Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

18 files changed, 35796 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sun/Kconfig b/drivers/net/ethernet/sun/Kconfig
new file mode 100644
index 000000000..1080a2a3e
--- /dev/null
+++ b/drivers/net/ethernet/sun/Kconfig
@@ -0,0 +1,108 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Sun network device configuration
+#
+
+config NET_VENDOR_SUN
+	bool "Sun devices"
+	default y
+	depends on SUN3 || SBUS || PCI || SUN_LDOMS
+	---help---
+	  If you have a network (Ethernet) card belonging to this class, say Y.
+
+	  Note that the answer to this question doesn't directly affect the
+	  kernel: saying N will just cause the configurator to skip all
+	  the questions about Sun network interfaces. If you say Y, you will be
+	  asked for your specific card in the following questions.
+
+if NET_VENDOR_SUN
+
+config HAPPYMEAL
+	tristate "Sun Happy Meal 10/100baseT support"
+	depends on (SBUS || PCI)
+	select CRC32
+	---help---
+	  This driver supports the "hme" interface present on most Ultra
+	  systems and as an option on older Sbus systems. This driver supports
+	  both PCI and Sbus devices. This driver also supports the "qfe" quad
+	  100baseT device available in both PCI and Sbus configurations.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called sunhme.
+
+config SUNBMAC
+	tristate "Sun BigMAC 10/100baseT support"
+	depends on SBUS
+	select CRC32
+	---help---
+	  This driver supports the "be" interface available as an Sbus option.
+	  This is Sun's older 100baseT Ethernet device.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called sunbmac.
+
+config SUNQE
+	tristate "Sun QuadEthernet support"
+	depends on SBUS
+	select CRC32
+	---help---
+	  This driver supports the "qe" 10baseT Ethernet device, available as
+	  an Sbus option. Note that this is not the same as Quad FastEthernet
+	  "qfe" which is supported by the Happy Meal driver instead.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called sunqe.
+
+config SUNGEM
+	tristate "Sun GEM support"
+	depends on PCI
+	select CRC32
+	select SUNGEM_PHY
+	---help---
+	  Support for the Sun GEM chip, aka Sun GigabitEthernet/P 2.0.  See also
+	  <http://docs.oracle.com/cd/E19455-01/806-3985-10/806-3985-10.pdf>.
+
+config CASSINI
+	tristate "Sun Cassini support"
+	depends on PCI
+	select CRC32
+	---help---
+	  Support for the Sun Cassini chip, aka Sun GigaSwift Ethernet. See also
+	  <http://docs.oracle.com/cd/E19113-01/giga.ether.pci/817-4341-10/817-4341-10.pdf>.
+
+config SUNVNET_COMMON
+	tristate "Common routines to support Sun Virtual Networking"
+	depends on SUN_LDOMS
+	depends on INET
+	default m
+
+config SUNVNET
+	tristate "Sun Virtual Network support"
+	default m
+	depends on SUN_LDOMS
+	depends on SUNVNET_COMMON
+	---help---
+	  Support for virtual network devices under Sun Logical Domains.
+
+config LDMVSW
+	tristate "Sun4v LDoms Virtual Switch support"
+	default m
+	depends on SUN_LDOMS
+	depends on SUNVNET_COMMON
+	---help---
+	  Support for virtual switch devices under Sun4v Logical Domains.
+	  This driver adds a network interface for every vsw-port node
+	  found in the machine description of a service domain.
+	  Linux bridge/switch software can use these interfaces for
+	  guest domain network interconnectivity or guest domain
+	  connection to a physical network on a service domain.
+
+config NIU
+	tristate "Sun Neptune 10Gbit Ethernet support"
+	depends on PCI
+	select CRC32
+	---help---
+	  This enables support for cards based upon Sun's
+	  Neptune chipset.
+
+endif # NET_VENDOR_SUN
diff --git a/drivers/net/ethernet/sun/Makefile b/drivers/net/ethernet/sun/Makefile
new file mode 100644
index 000000000..9a5249dee
--- /dev/null
+++ b/drivers/net/ethernet/sun/Makefile
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the Sun network device drivers.
+#
+
+obj-$(CONFIG_HAPPYMEAL) += sunhme.o
+obj-$(CONFIG_SUNQE) += sunqe.o
+obj-$(CONFIG_SUNBMAC) += sunbmac.o
+obj-$(CONFIG_SUNGEM) += sungem.o
+obj-$(CONFIG_CASSINI) += cassini.o
+obj-$(CONFIG_SUNVNET_COMMON) += sunvnet_common.o
+obj-$(CONFIG_SUNVNET) += sunvnet.o
+obj-$(CONFIG_LDMVSW) += ldmvsw.o
+obj-$(CONFIG_NIU) += niu.o
diff --git a/drivers/net/ethernet/sun/cassini.c b/drivers/net/ethernet/sun/cassini.c
new file mode 100644
index 000000000..d323dd9da
--- /dev/null
+++ b/drivers/net/ethernet/sun/cassini.c
@@ -0,0 +1,5279 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* cassini.c: Sun Microsystems Cassini(+) ethernet driver.
+ *
+ * Copyright (C) 2004 Sun Microsystems Inc.
+ * Copyright (C) 2003 Adrian Sun (asun@darksunrising.com)
+ *
+ * This driver uses the sungem driver (c) David Miller
+ * (davem@redhat.com) as its basis.
+ *
+ * The cassini chip has a number of features that distinguish it from
+ * the gem chip:
+ *  4 transmit descriptor rings that are used for either QoS (VLAN) or
+ *      load balancing (non-VLAN mode)
+ *  batching of multiple packets
+ *  multiple CPU dispatching
+ *  page-based RX descriptor engine with separate completion rings
+ *  Gigabit support (GMII and PCS interface)
+ *  MIF link up/down detection works
+ *
+ * RX is handled by page sized buffers that are attached as fragments to
+ * the skb. here's what's done:
+ *  -- driver allocates pages at a time and keeps reference counts
+ *     on them.
+ *  -- the upper protocol layers assume that the header is in the skb
+ *     itself. as a result, cassini will copy a small amount (64 bytes)
+ *     to make them happy.
+ *  -- driver appends the rest of the data pages as frags to skbuffs
+ *     and increments the reference count
+ *  -- on page reclamation, the driver swaps the page with a spare page.
+ *     if that page is still in use, it frees its reference to that page,
+ *     and allocates a new page for use. otherwise, it just recycles the
+ *     the page.
+ *
+ * NOTE: cassini can parse the header. however, it's not worth it
+ *       as long as the network stack requires a header copy.
+ *
+ * TX has 4 queues. currently these queues are used in a round-robin
+ * fashion for load balancing. They can also be used for QoS. for that
+ * to work, however, QoS information needs to be exposed down to the driver
+ * level so that subqueues get targeted to particular transmit rings.
+ * alternatively, the queues can be configured via use of the all-purpose
+ * ioctl.
+ *
+ * RX DATA: the rx completion ring has all the info, but the rx desc
+ * ring has all of the data. RX can conceivably come in under multiple
+ * interrupts, but the INT# assignment needs to be set up properly by
+ * the BIOS and conveyed to the driver. PCI BIOSes don't know how to do
+ * that. also, the two descriptor rings are designed to distinguish between
+ * encrypted and non-encrypted packets, but we use them for buffering
+ * instead.
+ *
+ * by default, the selective clear mask is set up to process rx packets.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/compiler.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/vmalloc.h>
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
+#include <linux/list.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/ethtool.h>
+#include <linux/crc32.h>
+#include <linux/random.h>
+#include <linux/mii.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/mutex.h>
+#include <linux/firmware.h>
+
+#include <net/checksum.h>
+
+#include <linux/atomic.h>
+#include <asm/io.h>
+#include <asm/byteorder.h>
+#include <linux/uaccess.h>
+
+#define cas_page_map(x)      kmap_atomic((x))
+#define cas_page_unmap(x)    kunmap_atomic((x))
+#define CAS_NCPUS            num_online_cpus()
+
+#define cas_skb_release(x)  netif_rx(x)
+
+/* select which firmware to use */
+#define USE_HP_WORKAROUND
+#define HP_WORKAROUND_DEFAULT /* select which firmware to use as default */
+#define CAS_HP_ALT_FIRMWARE   cas_prog_null /* alternate firmware */
+
+#include "cassini.h"
+
+#define USE_TX_COMPWB      /* use completion writeback registers */
+#define USE_CSMA_CD_PROTO  /* standard CSMA/CD */
+#define USE_RX_BLANK       /* hw interrupt mitigation */
+#undef USE_ENTROPY_DEV     /* don't test for entropy device */
+
+/* NOTE: these aren't useable unless PCI interrupts can be assigned.
+ * also, we need to make cp->lock finer-grained.
+ */
+#undef  USE_PCI_INTB
+#undef  USE_PCI_INTC
+#undef  USE_PCI_INTD
+#undef  USE_QOS
+
+#undef  USE_VPD_DEBUG       /* debug vpd information if defined */
+
+/* rx processing options */
+#define USE_PAGE_ORDER      /* specify to allocate large rx pages */
+#define RX_DONT_BATCH  0    /* if 1, don't batch flows */
+#define RX_COPY_ALWAYS 0    /* if 0, use frags */
+#define RX_COPY_MIN    64   /* copy a little to make upper layers happy */
+#undef  RX_COUNT_BUFFERS    /* define to calculate RX buffer stats */
+
+#define DRV_MODULE_NAME		"cassini"
+#define DRV_MODULE_VERSION	"1.6"
+#define DRV_MODULE_RELDATE	"21 May 2008"
+
+#define CAS_DEF_MSG_ENABLE	  \
+	(NETIF_MSG_DRV		| \
+	 NETIF_MSG_PROBE	| \
+	 NETIF_MSG_LINK		| \
+	 NETIF_MSG_TIMER	| \
+	 NETIF_MSG_IFDOWN	| \
+	 NETIF_MSG_IFUP		| \
+	 NETIF_MSG_RX_ERR	| \
+	 NETIF_MSG_TX_ERR)
+
+/* length of time before we decide the hardware is borked,
+ * and dev->tx_timeout() should be called to fix the problem
+ */
+#define CAS_TX_TIMEOUT			(HZ)
+#define CAS_LINK_TIMEOUT                (22*HZ/10)
+#define CAS_LINK_FAST_TIMEOUT           (1)
+
+/* timeout values for state changing. these specify the number
+ * of 10us delays to be used before giving up.
+ */
+#define STOP_TRIES_PHY 1000
+#define STOP_TRIES     5000
+
+/* specify a minimum frame size to deal with some fifo issues
+ * max mtu == 2 * page size - ethernet header - 64 - swivel =
+ *            2 * page_size - 0x50
+ */
+#define CAS_MIN_FRAME			97
+#define CAS_1000MB_MIN_FRAME            255
+#define CAS_MIN_MTU                     60
+#define CAS_MAX_MTU                     min(((cp->page_size << 1) - 0x50), 9000)
+
+#if 1
+/*
+ * Eliminate these and use separate atomic counters for each, to
+ * avoid a race condition.
+ */
+#else
+#define CAS_RESET_MTU                   1
+#define CAS_RESET_ALL                   2
+#define CAS_RESET_SPARE                 3
+#endif
+
+static char version[] =
+	DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
+
+static int cassini_debug = -1;	/* -1 == use CAS_DEF_MSG_ENABLE as value */
+static int link_mode;
+
+MODULE_AUTHOR("Adrian Sun (asun@darksunrising.com)");
+MODULE_DESCRIPTION("Sun Cassini(+) ethernet driver");
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("sun/cassini.bin");
+module_param(cassini_debug, int, 0);
+MODULE_PARM_DESC(cassini_debug, "Cassini bitmapped debugging message enable value");
+module_param(link_mode, int, 0);
+MODULE_PARM_DESC(link_mode, "default link mode");
+
+/*
+ * Work around for a PCS bug in which the link goes down due to the chip
+ * being confused and never showing a link status of "up."
+ */
+#define DEFAULT_LINKDOWN_TIMEOUT 5
+/*
+ * Value in seconds, for user input.
+ */
+static int linkdown_timeout = DEFAULT_LINKDOWN_TIMEOUT;
+module_param(linkdown_timeout, int, 0);
+MODULE_PARM_DESC(linkdown_timeout,
+"min reset interval in sec. for PCS linkdown issue; disabled if not positive");
+
+/*
+ * value in 'ticks' (units used by jiffies). Set when we init the
+ * module because 'HZ' in actually a function call on some flavors of
+ * Linux.  This will default to DEFAULT_LINKDOWN_TIMEOUT * HZ.
+ */
+static int link_transition_timeout;
+
+
+
+static u16 link_modes[] = {
+	BMCR_ANENABLE,			 /* 0 : autoneg */
+	0,				 /* 1 : 10bt half duplex */
+	BMCR_SPEED100,			 /* 2 : 100bt half duplex */
+	BMCR_FULLDPLX,			 /* 3 : 10bt full duplex */
+	BMCR_SPEED100|BMCR_FULLDPLX,	 /* 4 : 100bt full duplex */
+	CAS_BMCR_SPEED1000|BMCR_FULLDPLX /* 5 : 1000bt full duplex */
+};
+
+static const struct pci_device_id cas_pci_tbl[] = {
+	{ PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_CASSINI,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SATURN,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, cas_pci_tbl);
+
+static void cas_set_link_modes(struct cas *cp);
+
+static inline void cas_lock_tx(struct cas *cp)
+{
+	int i;
+
+	for (i = 0; i < N_TX_RINGS; i++)
+		spin_lock_nested(&cp->tx_lock[i], i);
+}
+
+static inline void cas_lock_all(struct cas *cp)
+{
+	spin_lock_irq(&cp->lock);
+	cas_lock_tx(cp);
+}
+
+/* WTZ: QA was finding deadlock problems with the previous
+ * versions after long test runs with multiple cards per machine.
+ * See if replacing cas_lock_all with safer versions helps. The
+ * symptoms QA is reporting match those we'd expect if interrupts
+ * aren't being properly restored, and we fixed a previous deadlock
+ * with similar symptoms by using save/restore versions in other
+ * places.
+ */
+#define cas_lock_all_save(cp, flags) \
+do { \
+	struct cas *xxxcp = (cp); \
+	spin_lock_irqsave(&xxxcp->lock, flags); \
+	cas_lock_tx(xxxcp); \
+} while (0)
+
+static inline void cas_unlock_tx(struct cas *cp)
+{
+	int i;
+
+	for (i = N_TX_RINGS; i > 0; i--)
+		spin_unlock(&cp->tx_lock[i - 1]);
+}
+
+static inline void cas_unlock_all(struct cas *cp)
+{
+	cas_unlock_tx(cp);
+	spin_unlock_irq(&cp->lock);
+}
+
+#define cas_unlock_all_restore(cp, flags) \
+do { \
+	struct cas *xxxcp = (cp); \
+	cas_unlock_tx(xxxcp); \
+	spin_unlock_irqrestore(&xxxcp->lock, flags); \
+} while (0)
+
+static void cas_disable_irq(struct cas *cp, const int ring)
+{
+	/* Make sure we won't get any more interrupts */
+	if (ring == 0) {
+		writel(0xFFFFFFFF, cp->regs + REG_INTR_MASK);
+		return;
+	}
+
+	/* disable completion interrupts and selectively mask */
+	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
+		switch (ring) {
+#if defined (USE_PCI_INTB) || defined(USE_PCI_INTC) || defined(USE_PCI_INTD)
+#ifdef USE_PCI_INTB
+		case 1:
+#endif
+#ifdef USE_PCI_INTC
+		case 2:
+#endif
+#ifdef USE_PCI_INTD
+		case 3:
+#endif
+			writel(INTRN_MASK_CLEAR_ALL | INTRN_MASK_RX_EN,
+			       cp->regs + REG_PLUS_INTRN_MASK(ring));
+			break;
+#endif
+		default:
+			writel(INTRN_MASK_CLEAR_ALL, cp->regs +
+			       REG_PLUS_INTRN_MASK(ring));
+			break;
+		}
+	}
+}
+
+static inline void cas_mask_intr(struct cas *cp)
+{
+	int i;
+
+	for (i = 0; i < N_RX_COMP_RINGS; i++)
+		cas_disable_irq(cp, i);
+}
+
+static void cas_enable_irq(struct cas *cp, const int ring)
+{
+	if (ring == 0) { /* all but TX_DONE */
+		writel(INTR_TX_DONE, cp->regs + REG_INTR_MASK);
+		return;
+	}
+
+	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
+		switch (ring) {
+#if defined (USE_PCI_INTB) || defined(USE_PCI_INTC) || defined(USE_PCI_INTD)
+#ifdef USE_PCI_INTB
+		case 1:
+#endif
+#ifdef USE_PCI_INTC
+		case 2:
+#endif
+#ifdef USE_PCI_INTD
+		case 3:
+#endif
+			writel(INTRN_MASK_RX_EN, cp->regs +
+			       REG_PLUS_INTRN_MASK(ring));
+			break;
+#endif
+		default:
+			break;
+		}
+	}
+}
+
+static inline void cas_unmask_intr(struct cas *cp)
+{
+	int i;
+
+	for (i = 0; i < N_RX_COMP_RINGS; i++)
+		cas_enable_irq(cp, i);
+}
+
+static inline void cas_entropy_gather(struct cas *cp)
+{
+#ifdef USE_ENTROPY_DEV
+	if ((cp->cas_flags & CAS_FLAG_ENTROPY_DEV) == 0)
+		return;
+
+	batch_entropy_store(readl(cp->regs + REG_ENTROPY_IV),
+			    readl(cp->regs + REG_ENTROPY_IV),
+			    sizeof(uint64_t)*8);
+#endif
+}
+
+static inline void cas_entropy_reset(struct cas *cp)
+{
+#ifdef USE_ENTROPY_DEV
+	if ((cp->cas_flags & CAS_FLAG_ENTROPY_DEV) == 0)
+		return;
+
+	writel(BIM_LOCAL_DEV_PAD | BIM_LOCAL_DEV_PROM | BIM_LOCAL_DEV_EXT,
+	       cp->regs + REG_BIM_LOCAL_DEV_EN);
+	writeb(ENTROPY_RESET_STC_MODE, cp->regs + REG_ENTROPY_RESET);
+	writeb(0x55, cp->regs + REG_ENTROPY_RAND_REG);
+
+	/* if we read back 0x0, we don't have an entropy device */
+	if (readb(cp->regs + REG_ENTROPY_RAND_REG) == 0)
+		cp->cas_flags &= ~CAS_FLAG_ENTROPY_DEV;
+#endif
+}
+
+/* access to the phy. the following assumes that we've initialized the MIF to
+ * be in frame rather than bit-bang mode
+ */
+static u16 cas_phy_read(struct cas *cp, int reg)
+{
+	u32 cmd;
+	int limit = STOP_TRIES_PHY;
+
+	cmd = MIF_FRAME_ST | MIF_FRAME_OP_READ;
+	cmd |= CAS_BASE(MIF_FRAME_PHY_ADDR, cp->phy_addr);
+	cmd |= CAS_BASE(MIF_FRAME_REG_ADDR, reg);
+	cmd |= MIF_FRAME_TURN_AROUND_MSB;
+	writel(cmd, cp->regs + REG_MIF_FRAME);
+
+	/* poll for completion */
+	while (limit-- > 0) {
+		udelay(10);
+		cmd = readl(cp->regs + REG_MIF_FRAME);
+		if (cmd & MIF_FRAME_TURN_AROUND_LSB)
+			return cmd & MIF_FRAME_DATA_MASK;
+	}
+	return 0xFFFF; /* -1 */
+}
+
+static int cas_phy_write(struct cas *cp, int reg, u16 val)
+{
+	int limit = STOP_TRIES_PHY;
+	u32 cmd;
+
+	cmd = MIF_FRAME_ST | MIF_FRAME_OP_WRITE;
+	cmd |= CAS_BASE(MIF_FRAME_PHY_ADDR, cp->phy_addr);
+	cmd |= CAS_BASE(MIF_FRAME_REG_ADDR, reg);
+	cmd |= MIF_FRAME_TURN_AROUND_MSB;
+	cmd |= val & MIF_FRAME_DATA_MASK;
+	writel(cmd, cp->regs + REG_MIF_FRAME);
+
+	/* poll for completion */
+	while (limit-- > 0) {
+		udelay(10);
+		cmd = readl(cp->regs + REG_MIF_FRAME);
+		if (cmd & MIF_FRAME_TURN_AROUND_LSB)
+			return 0;
+	}
+	return -1;
+}
+
+static void cas_phy_powerup(struct cas *cp)
+{
+	u16 ctl = cas_phy_read(cp, MII_BMCR);
+
+	if ((ctl & BMCR_PDOWN) == 0)
+		return;
+	ctl &= ~BMCR_PDOWN;
+	cas_phy_write(cp, MII_BMCR, ctl);
+}
+
+static void cas_phy_powerdown(struct cas *cp)
+{
+	u16 ctl = cas_phy_read(cp, MII_BMCR);
+
+	if (ctl & BMCR_PDOWN)
+		return;
+	ctl |= BMCR_PDOWN;
+	cas_phy_write(cp, MII_BMCR, ctl);
+}
+
+/* cp->lock held. note: the last put_page will free the buffer */
+static int cas_page_free(struct cas *cp, cas_page_t *page)
+{
+	pci_unmap_page(cp->pdev, page->dma_addr, cp->page_size,
+		       PCI_DMA_FROMDEVICE);
+	__free_pages(page->buffer, cp->page_order);
+	kfree(page);
+	return 0;
+}
+
+#ifdef RX_COUNT_BUFFERS
+#define RX_USED_ADD(x, y)       ((x)->used += (y))
+#define RX_USED_SET(x, y)       ((x)->used  = (y))
+#else
+#define RX_USED_ADD(x, y)
+#define RX_USED_SET(x, y)
+#endif
+
+/* local page allocation routines for the receive buffers. jumbo pages
+ * require at least 8K contiguous and 8K aligned buffers.
+ */
+static cas_page_t *cas_page_alloc(struct cas *cp, const gfp_t flags)
+{
+	cas_page_t *page;
+
+	page = kmalloc(sizeof(cas_page_t), flags);
+	if (!page)
+		return NULL;
+
+	INIT_LIST_HEAD(&page->list);
+	RX_USED_SET(page, 0);
+	page->buffer = alloc_pages(flags, cp->page_order);
+	if (!page->buffer)
+		goto page_err;
+	page->dma_addr = pci_map_page(cp->pdev, page->buffer, 0,
+				      cp->page_size, PCI_DMA_FROMDEVICE);
+	return page;
+
+page_err:
+	kfree(page);
+	return NULL;
+}
+
+/* initialize spare pool of rx buffers, but allocate during the open */
+static void cas_spare_init(struct cas *cp)
+{
+  	spin_lock(&cp->rx_inuse_lock);
+	INIT_LIST_HEAD(&cp->rx_inuse_list);
+	spin_unlock(&cp->rx_inuse_lock);
+
+	spin_lock(&cp->rx_spare_lock);
+	INIT_LIST_HEAD(&cp->rx_spare_list);
+	cp->rx_spares_needed = RX_SPARE_COUNT;
+	spin_unlock(&cp->rx_spare_lock);
+}
+
+/* used on close. free all the spare buffers. */
+static void cas_spare_free(struct cas *cp)
+{
+	struct list_head list, *elem, *tmp;
+
+	/* free spare buffers */
+	INIT_LIST_HEAD(&list);
+	spin_lock(&cp->rx_spare_lock);
+	list_splice_init(&cp->rx_spare_list, &list);
+	spin_unlock(&cp->rx_spare_lock);
+	list_for_each_safe(elem, tmp, &list) {
+		cas_page_free(cp, list_entry(elem, cas_page_t, list));
+	}
+
+	INIT_LIST_HEAD(&list);
+#if 1
+	/*
+	 * Looks like Adrian had protected this with a different
+	 * lock than used everywhere else to manipulate this list.
+	 */
+	spin_lock(&cp->rx_inuse_lock);
+	list_splice_init(&cp->rx_inuse_list, &list);
+	spin_unlock(&cp->rx_inuse_lock);
+#else
+	spin_lock(&cp->rx_spare_lock);
+	list_splice_init(&cp->rx_inuse_list, &list);
+	spin_unlock(&cp->rx_spare_lock);
+#endif
+	list_for_each_safe(elem, tmp, &list) {
+		cas_page_free(cp, list_entry(elem, cas_page_t, list));
+	}
+}
+
+/* replenish spares if needed */
+static void cas_spare_recover(struct cas *cp, const gfp_t flags)
+{
+	struct list_head list, *elem, *tmp;
+	int needed, i;
+
+	/* check inuse list. if we don't need any more free buffers,
+	 * just free it
+	 */
+
+	/* make a local copy of the list */
+	INIT_LIST_HEAD(&list);
+	spin_lock(&cp->rx_inuse_lock);
+	list_splice_init(&cp->rx_inuse_list, &list);
+	spin_unlock(&cp->rx_inuse_lock);
+
+	list_for_each_safe(elem, tmp, &list) {
+		cas_page_t *page = list_entry(elem, cas_page_t, list);
+
+		/*
+		 * With the lockless pagecache, cassini buffering scheme gets
+		 * slightly less accurate: we might find that a page has an
+		 * elevated reference count here, due to a speculative ref,
+		 * and skip it as in-use. Ideally we would be able to reclaim
+		 * it. However this would be such a rare case, it doesn't
+		 * matter too much as we should pick it up the next time round.
+		 *
+		 * Importantly, if we find that the page has a refcount of 1
+		 * here (our refcount), then we know it is definitely not inuse
+		 * so we can reuse it.
+		 */
+		if (page_count(page->buffer) > 1)
+			continue;
+
+		list_del(elem);
+		spin_lock(&cp->rx_spare_lock);
+		if (cp->rx_spares_needed > 0) {
+			list_add(elem, &cp->rx_spare_list);
+			cp->rx_spares_needed--;
+			spin_unlock(&cp->rx_spare_lock);
+		} else {
+			spin_unlock(&cp->rx_spare_lock);
+			cas_page_free(cp, page);
+		}
+	}
+
+	/* put any inuse buffers back on the list */
+	if (!list_empty(&list)) {
+		spin_lock(&cp->rx_inuse_lock);
+		list_splice(&list, &cp->rx_inuse_list);
+		spin_unlock(&cp->rx_inuse_lock);
+	}
+
+	spin_lock(&cp->rx_spare_lock);
+	needed = cp->rx_spares_needed;
+	spin_unlock(&cp->rx_spare_lock);
+	if (!needed)
+		return;
+
+	/* we still need spares, so try to allocate some */
+	INIT_LIST_HEAD(&list);
+	i = 0;
+	while (i < needed) {
+		cas_page_t *spare = cas_page_alloc(cp, flags);
+		if (!spare)
+			break;
+		list_add(&spare->list, &list);
+		i++;
+	}
+
+	spin_lock(&cp->rx_spare_lock);
+	list_splice(&list, &cp->rx_spare_list);
+	cp->rx_spares_needed -= i;
+	spin_unlock(&cp->rx_spare_lock);
+}
+
+/* pull a page from the list. */
+static cas_page_t *cas_page_dequeue(struct cas *cp)
+{
+	struct list_head *entry;
+	int recover;
+
+	spin_lock(&cp->rx_spare_lock);
+	if (list_empty(&cp->rx_spare_list)) {
+		/* try to do a quick recovery */
+		spin_unlock(&cp->rx_spare_lock);
+		cas_spare_recover(cp, GFP_ATOMIC);
+		spin_lock(&cp->rx_spare_lock);
+		if (list_empty(&cp->rx_spare_list)) {
+			netif_err(cp, rx_err, cp->dev,
+				  "no spare buffers available\n");
+			spin_unlock(&cp->rx_spare_lock);
+			return NULL;
+		}
+	}
+
+	entry = cp->rx_spare_list.next;
+	list_del(entry);
+	recover = ++cp->rx_spares_needed;
+	spin_unlock(&cp->rx_spare_lock);
+
+	/* trigger the timer to do the recovery */
+	if ((recover & (RX_SPARE_RECOVER_VAL - 1)) == 0) {
+#if 1
+		atomic_inc(&cp->reset_task_pending);
+		atomic_inc(&cp->reset_task_pending_spare);
+		schedule_work(&cp->reset_task);
+#else
+		atomic_set(&cp->reset_task_pending, CAS_RESET_SPARE);
+		schedule_work(&cp->reset_task);
+#endif
+	}
+	return list_entry(entry, cas_page_t, list);
+}
+
+
+static void cas_mif_poll(struct cas *cp, const int enable)
+{
+	u32 cfg;
+
+	cfg  = readl(cp->regs + REG_MIF_CFG);
+	cfg &= (MIF_CFG_MDIO_0 | MIF_CFG_MDIO_1);
+
+	if (cp->phy_type & CAS_PHY_MII_MDIO1)
+		cfg |= MIF_CFG_PHY_SELECT;
+
+	/* poll and interrupt on link status change. */
+	if (enable) {
+		cfg |= MIF_CFG_POLL_EN;
+		cfg |= CAS_BASE(MIF_CFG_POLL_REG, MII_BMSR);
+		cfg |= CAS_BASE(MIF_CFG_POLL_PHY, cp->phy_addr);
+	}
+	writel((enable) ? ~(BMSR_LSTATUS | BMSR_ANEGCOMPLETE) : 0xFFFF,
+	       cp->regs + REG_MIF_MASK);
+	writel(cfg, cp->regs + REG_MIF_CFG);
+}
+
+/* Must be invoked under cp->lock */
+static void cas_begin_auto_negotiation(struct cas *cp,
+				       const struct ethtool_link_ksettings *ep)
+{
+	u16 ctl;
+#if 1
+	int lcntl;
+	int changed = 0;
+	int oldstate = cp->lstate;
+	int link_was_not_down = !(oldstate == link_down);
+#endif
+	/* Setup link parameters */
+	if (!ep)
+		goto start_aneg;
+	lcntl = cp->link_cntl;
+	if (ep->base.autoneg == AUTONEG_ENABLE) {
+		cp->link_cntl = BMCR_ANENABLE;
+	} else {
+		u32 speed = ep->base.speed;
+		cp->link_cntl = 0;
+		if (speed == SPEED_100)
+			cp->link_cntl |= BMCR_SPEED100;
+		else if (speed == SPEED_1000)
+			cp->link_cntl |= CAS_BMCR_SPEED1000;
+		if (ep->base.duplex == DUPLEX_FULL)
+			cp->link_cntl |= BMCR_FULLDPLX;
+	}
+#if 1
+	changed = (lcntl != cp->link_cntl);
+#endif
+start_aneg:
+	if (cp->lstate == link_up) {
+		netdev_info(cp->dev, "PCS link down\n");
+	} else {
+		if (changed) {
+			netdev_info(cp->dev, "link configuration changed\n");
+		}
+	}
+	cp->lstate = link_down;
+	cp->link_transition = LINK_TRANSITION_LINK_DOWN;
+	if (!cp->hw_running)
+		return;
+#if 1
+	/*
+	 * WTZ: If the old state was link_up, we turn off the carrier
+	 * to replicate everything we do elsewhere on a link-down
+	 * event when we were already in a link-up state..
+	 */
+	if (oldstate == link_up)
+		netif_carrier_off(cp->dev);
+	if (changed  && link_was_not_down) {
+		/*
+		 * WTZ: This branch will simply schedule a full reset after
+		 * we explicitly changed link modes in an ioctl. See if this
+		 * fixes the link-problems we were having for forced mode.
+		 */
+		atomic_inc(&cp->reset_task_pending);
+		atomic_inc(&cp->reset_task_pending_all);
+		schedule_work(&cp->reset_task);
+		cp->timer_ticks = 0;
+		mod_timer(&cp->link_timer, jiffies + CAS_LINK_TIMEOUT);
+		return;
+	}
+#endif
+	if (cp->phy_type & CAS_PHY_SERDES) {
+		u32 val = readl(cp->regs + REG_PCS_MII_CTRL);
+
+		if (cp->link_cntl & BMCR_ANENABLE) {
+			val |= (PCS_MII_RESTART_AUTONEG | PCS_MII_AUTONEG_EN);
+			cp->lstate = link_aneg;
+		} else {
+			if (cp->link_cntl & BMCR_FULLDPLX)
+				val |= PCS_MII_CTRL_DUPLEX;
+			val &= ~PCS_MII_AUTONEG_EN;
+			cp->lstate = link_force_ok;
+		}
+		cp->link_transition = LINK_TRANSITION_LINK_CONFIG;
+		writel(val, cp->regs + REG_PCS_MII_CTRL);
+
+	} else {
+		cas_mif_poll(cp, 0);
+		ctl = cas_phy_read(cp, MII_BMCR);
+		ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 |
+			 CAS_BMCR_SPEED1000 | BMCR_ANENABLE);
+		ctl |= cp->link_cntl;
+		if (ctl & BMCR_ANENABLE) {
+			ctl |= BMCR_ANRESTART;
+			cp->lstate = link_aneg;
+		} else {
+			cp->lstate = link_force_ok;
+		}
+		cp->link_transition = LINK_TRANSITION_LINK_CONFIG;
+		cas_phy_write(cp, MII_BMCR, ctl);
+		cas_mif_poll(cp, 1);
+	}
+
+	cp->timer_ticks = 0;
+	mod_timer(&cp->link_timer, jiffies + CAS_LINK_TIMEOUT);
+}
+
+/* Must be invoked under cp->lock. */
+static int cas_reset_mii_phy(struct cas *cp)
+{
+	int limit = STOP_TRIES_PHY;
+	u16 val;
+
+	cas_phy_write(cp, MII_BMCR, BMCR_RESET);
+	udelay(100);
+	while (--limit) {
+		val = cas_phy_read(cp, MII_BMCR);
+		if ((val & BMCR_RESET) == 0)
+			break;
+		udelay(10);
+	}
+	return limit <= 0;
+}
+
+static void cas_saturn_firmware_init(struct cas *cp)
+{
+	const struct firmware *fw;
+	const char fw_name[] = "sun/cassini.bin";
+	int err;
+
+	if (PHY_NS_DP83065 != cp->phy_id)
+		return;
+
+	err = request_firmware(&fw, fw_name, &cp->pdev->dev);
+	if (err) {
+		pr_err("Failed to load firmware \"%s\"\n",
+		       fw_name);
+		return;
+	}
+	if (fw->size < 2) {
+		pr_err("bogus length %zu in \"%s\"\n",
+		       fw->size, fw_name);
+		goto out;
+	}
+	cp->fw_load_addr= fw->data[1] << 8 | fw->data[0];
+	cp->fw_size = fw->size - 2;
+	cp->fw_data = vmalloc(cp->fw_size);
+	if (!cp->fw_data)
+		goto out;
+	memcpy(cp->fw_data, &fw->data[2], cp->fw_size);
+out:
+	release_firmware(fw);
+}
+
+static void cas_saturn_firmware_load(struct cas *cp)
+{
+	int i;
+
+	if (!cp->fw_data)
+		return;
+
+	cas_phy_powerdown(cp);
+
+	/* expanded memory access mode */
+	cas_phy_write(cp, DP83065_MII_MEM, 0x0);
+
+	/* pointer configuration for new firmware */
+	cas_phy_write(cp, DP83065_MII_REGE, 0x8ff9);
+	cas_phy_write(cp, DP83065_MII_REGD, 0xbd);
+	cas_phy_write(cp, DP83065_MII_REGE, 0x8ffa);
+	cas_phy_write(cp, DP83065_MII_REGD, 0x82);
+	cas_phy_write(cp, DP83065_MII_REGE, 0x8ffb);
+	cas_phy_write(cp, DP83065_MII_REGD, 0x0);
+	cas_phy_write(cp, DP83065_MII_REGE, 0x8ffc);
+	cas_phy_write(cp, DP83065_MII_REGD, 0x39);
+
+	/* download new firmware */
+	cas_phy_write(cp, DP83065_MII_MEM, 0x1);
+	cas_phy_write(cp, DP83065_MII_REGE, cp->fw_load_addr);
+	for (i = 0; i < cp->fw_size; i++)
+		cas_phy_write(cp, DP83065_MII_REGD, cp->fw_data[i]);
+
+	/* enable firmware */
+	cas_phy_write(cp, DP83065_MII_REGE, 0x8ff8);
+	cas_phy_write(cp, DP83065_MII_REGD, 0x1);
+}
+
+
+/* phy initialization */
+static void cas_phy_init(struct cas *cp)
+{
+	u16 val;
+
+	/* if we're in MII/GMII mode, set up phy */
+	if (CAS_PHY_MII(cp->phy_type)) {
+		writel(PCS_DATAPATH_MODE_MII,
+		       cp->regs + REG_PCS_DATAPATH_MODE);
+
+		cas_mif_poll(cp, 0);
+		cas_reset_mii_phy(cp); /* take out of isolate mode */
+
+		if (PHY_LUCENT_B0 == cp->phy_id) {
+			/* workaround link up/down issue with lucent */
+			cas_phy_write(cp, LUCENT_MII_REG, 0x8000);
+			cas_phy_write(cp, MII_BMCR, 0x00f1);
+			cas_phy_write(cp, LUCENT_MII_REG, 0x0);
+
+		} else if (PHY_BROADCOM_B0 == (cp->phy_id & 0xFFFFFFFC)) {
+			/* workarounds for broadcom phy */
+			cas_phy_write(cp, BROADCOM_MII_REG8, 0x0C20);
+			cas_phy_write(cp, BROADCOM_MII_REG7, 0x0012);
+			cas_phy_write(cp, BROADCOM_MII_REG5, 0x1804);
+			cas_phy_write(cp, BROADCOM_MII_REG7, 0x0013);
+			cas_phy_write(cp, BROADCOM_MII_REG5, 0x1204);
+			cas_phy_write(cp, BROADCOM_MII_REG7, 0x8006);
+			cas_phy_write(cp, BROADCOM_MII_REG5, 0x0132);
+			cas_phy_write(cp, BROADCOM_MII_REG7, 0x8006);
+			cas_phy_write(cp, BROADCOM_MII_REG5, 0x0232);
+			cas_phy_write(cp, BROADCOM_MII_REG7, 0x201F);
+			cas_phy_write(cp, BROADCOM_MII_REG5, 0x0A20);
+
+		} else if (PHY_BROADCOM_5411 == cp->phy_id) {
+			val = cas_phy_read(cp, BROADCOM_MII_REG4);
+			val = cas_phy_read(cp, BROADCOM_MII_REG4);
+			if (val & 0x0080) {
+				/* link workaround */
+				cas_phy_write(cp, BROADCOM_MII_REG4,
+					      val & ~0x0080);
+			}
+
+		} else if (cp->cas_flags & CAS_FLAG_SATURN) {
+			writel((cp->phy_type & CAS_PHY_MII_MDIO0) ?
+			       SATURN_PCFG_FSI : 0x0,
+			       cp->regs + REG_SATURN_PCFG);
+
+			/* load firmware to address 10Mbps auto-negotiation
+			 * issue. NOTE: this will need to be changed if the
+			 * default firmware gets fixed.
+			 */
+			if (PHY_NS_DP83065 == cp->phy_id) {
+				cas_saturn_firmware_load(cp);
+			}
+			cas_phy_powerup(cp);
+		}
+
+		/* advertise capabilities */
+		val = cas_phy_read(cp, MII_BMCR);
+		val &= ~BMCR_ANENABLE;
+		cas_phy_write(cp, MII_BMCR, val);
+		udelay(10);
+
+		cas_phy_write(cp, MII_ADVERTISE,
+			      cas_phy_read(cp, MII_ADVERTISE) |
+			      (ADVERTISE_10HALF | ADVERTISE_10FULL |
+			       ADVERTISE_100HALF | ADVERTISE_100FULL |
+			       CAS_ADVERTISE_PAUSE |
+			       CAS_ADVERTISE_ASYM_PAUSE));
+
+		if (cp->cas_flags & CAS_FLAG_1000MB_CAP) {
+			/* make sure that we don't advertise half
+			 * duplex to avoid a chip issue
+			 */
+			val  = cas_phy_read(cp, CAS_MII_1000_CTRL);
+			val &= ~CAS_ADVERTISE_1000HALF;
+			val |= CAS_ADVERTISE_1000FULL;
+			cas_phy_write(cp, CAS_MII_1000_CTRL, val);
+		}
+
+	} else {
+		/* reset pcs for serdes */
+		u32 val;
+		int limit;
+
+		writel(PCS_DATAPATH_MODE_SERDES,
+		       cp->regs + REG_PCS_DATAPATH_MODE);
+
+		/* enable serdes pins on saturn */
+		if (cp->cas_flags & CAS_FLAG_SATURN)
+			writel(0, cp->regs + REG_SATURN_PCFG);
+
+		/* Reset PCS unit. */
+		val = readl(cp->regs + REG_PCS_MII_CTRL);
+		val |= PCS_MII_RESET;
+		writel(val, cp->regs + REG_PCS_MII_CTRL);
+
+		limit = STOP_TRIES;
+		while (--limit > 0) {
+			udelay(10);
+			if ((readl(cp->regs + REG_PCS_MII_CTRL) &
+			     PCS_MII_RESET) == 0)
+				break;
+		}
+		if (limit <= 0)
+			netdev_warn(cp->dev, "PCS reset bit would not clear [%08x]\n",
+				    readl(cp->regs + REG_PCS_STATE_MACHINE));
+
+		/* Make sure PCS is disabled while changing advertisement
+		 * configuration.
+		 */
+		writel(0x0, cp->regs + REG_PCS_CFG);
+
+		/* Advertise all capabilities except half-duplex. */
+		val  = readl(cp->regs + REG_PCS_MII_ADVERT);
+		val &= ~PCS_MII_ADVERT_HD;
+		val |= (PCS_MII_ADVERT_FD | PCS_MII_ADVERT_SYM_PAUSE |
+			PCS_MII_ADVERT_ASYM_PAUSE);
+		writel(val, cp->regs + REG_PCS_MII_ADVERT);
+
+		/* enable PCS */
+		writel(PCS_CFG_EN, cp->regs + REG_PCS_CFG);
+
+		/* pcs workaround: enable sync detect */
+		writel(PCS_SERDES_CTRL_SYNCD_EN,
+		       cp->regs + REG_PCS_SERDES_CTRL);
+	}
+}
+
+
+static int cas_pcs_link_check(struct cas *cp)
+{
+	u32 stat, state_machine;
+	int retval = 0;
+
+	/* The link status bit latches on zero, so you must
+	 * read it twice in such a case to see a transition
+	 * to the link being up.
+	 */
+	stat = readl(cp->regs + REG_PCS_MII_STATUS);
+	if ((stat & PCS_MII_STATUS_LINK_STATUS) == 0)
+		stat = readl(cp->regs + REG_PCS_MII_STATUS);
+
+	/* The remote-fault indication is only valid
+	 * when autoneg has completed.
+	 */
+	if ((stat & (PCS_MII_STATUS_AUTONEG_COMP |
+		     PCS_MII_STATUS_REMOTE_FAULT)) ==
+	    (PCS_MII_STATUS_AUTONEG_COMP | PCS_MII_STATUS_REMOTE_FAULT))
+		netif_info(cp, link, cp->dev, "PCS RemoteFault\n");
+
+	/* work around link detection issue by querying the PCS state
+	 * machine directly.
+	 */
+	state_machine = readl(cp->regs + REG_PCS_STATE_MACHINE);
+	if ((state_machine & PCS_SM_LINK_STATE_MASK) != SM_LINK_STATE_UP) {
+		stat &= ~PCS_MII_STATUS_LINK_STATUS;
+	} else if (state_machine & PCS_SM_WORD_SYNC_STATE_MASK) {
+		stat |= PCS_MII_STATUS_LINK_STATUS;
+	}
+
+	if (stat & PCS_MII_STATUS_LINK_STATUS) {
+		if (cp->lstate != link_up) {
+			if (cp->opened) {
+				cp->lstate = link_up;
+				cp->link_transition = LINK_TRANSITION_LINK_UP;
+
+				cas_set_link_modes(cp);
+				netif_carrier_on(cp->dev);
+			}
+		}
+	} else if (cp->lstate == link_up) {
+		cp->lstate = link_down;
+		if (link_transition_timeout != 0 &&
+		    cp->link_transition != LINK_TRANSITION_REQUESTED_RESET &&
+		    !cp->link_transition_jiffies_valid) {
+			/*
+			 * force a reset, as a workaround for the
+			 * link-failure problem. May want to move this to a
+			 * point a bit earlier in the sequence. If we had
+			 * generated a reset a short time ago, we'll wait for
+			 * the link timer to check the status until a
+			 * timer expires (link_transistion_jiffies_valid is
+			 * true when the timer is running.)  Instead of using
+			 * a system timer, we just do a check whenever the
+			 * link timer is running - this clears the flag after
+			 * a suitable delay.
+			 */
+			retval = 1;
+			cp->link_transition = LINK_TRANSITION_REQUESTED_RESET;
+			cp->link_transition_jiffies = jiffies;
+			cp->link_transition_jiffies_valid = 1;
+		} else {
+			cp->link_transition = LINK_TRANSITION_ON_FAILURE;
+		}
+		netif_carrier_off(cp->dev);
+		if (cp->opened)
+			netif_info(cp, link, cp->dev, "PCS link down\n");
+
+		/* Cassini only: if you force a mode, there can be
+		 * sync problems on link down. to fix that, the following
+		 * things need to be checked:
+		 * 1) read serialink state register
+		 * 2) read pcs status register to verify link down.
+		 * 3) if link down and serial link == 0x03, then you need
+		 *    to global reset the chip.
+		 */
+		if ((cp->cas_flags & CAS_FLAG_REG_PLUS) == 0) {
+			/* should check to see if we're in a forced mode */
+			stat = readl(cp->regs + REG_PCS_SERDES_STATE);
+			if (stat == 0x03)
+				return 1;
+		}
+	} else if (cp->lstate == link_down) {
+		if (link_transition_timeout != 0 &&
+		    cp->link_transition != LINK_TRANSITION_REQUESTED_RESET &&
+		    !cp->link_transition_jiffies_valid) {
+			/* force a reset, as a workaround for the
+			 * link-failure problem.  May want to move
+			 * this to a point a bit earlier in the
+			 * sequence.
+			 */
+			retval = 1;
+			cp->link_transition = LINK_TRANSITION_REQUESTED_RESET;
+			cp->link_transition_jiffies = jiffies;
+			cp->link_transition_jiffies_valid = 1;
+		} else {
+			cp->link_transition = LINK_TRANSITION_STILL_FAILED;
+		}
+	}
+
+	return retval;
+}
+
+static int cas_pcs_interrupt(struct net_device *dev,
+			     struct cas *cp, u32 status)
+{
+	u32 stat = readl(cp->regs + REG_PCS_INTR_STATUS);
+
+	if ((stat & PCS_INTR_STATUS_LINK_CHANGE) == 0)
+		return 0;
+	return cas_pcs_link_check(cp);
+}
+
+static int cas_txmac_interrupt(struct net_device *dev,
+			       struct cas *cp, u32 status)
+{
+	u32 txmac_stat = readl(cp->regs + REG_MAC_TX_STATUS);
+
+	if (!txmac_stat)
+		return 0;
+
+	netif_printk(cp, intr, KERN_DEBUG, cp->dev,
+		     "txmac interrupt, txmac_stat: 0x%x\n", txmac_stat);
+
+	/* Defer timer expiration is quite normal,
+	 * don't even log the event.
+	 */
+	if ((txmac_stat & MAC_TX_DEFER_TIMER) &&
+	    !(txmac_stat & ~MAC_TX_DEFER_TIMER))
+		return 0;
+
+	spin_lock(&cp->stat_lock[0]);
+	if (txmac_stat & MAC_TX_UNDERRUN) {
+		netdev_err(dev, "TX MAC xmit underrun\n");
+		cp->net_stats[0].tx_fifo_errors++;
+	}
+
+	if (txmac_stat & MAC_TX_MAX_PACKET_ERR) {
+		netdev_err(dev, "TX MAC max packet size error\n");
+		cp->net_stats[0].tx_errors++;
+	}
+
+	/* The rest are all cases of one of the 16-bit TX
+	 * counters expiring.
+	 */
+	if (txmac_stat & MAC_TX_COLL_NORMAL)
+		cp->net_stats[0].collisions += 0x10000;
+
+	if (txmac_stat & MAC_TX_COLL_EXCESS) {
+		cp->net_stats[0].tx_aborted_errors += 0x10000;
+		cp->net_stats[0].collisions += 0x10000;
+	}
+
+	if (txmac_stat & MAC_TX_COLL_LATE) {
+		cp->net_stats[0].tx_aborted_errors += 0x10000;
+		cp->net_stats[0].collisions += 0x10000;
+	}
+	spin_unlock(&cp->stat_lock[0]);
+
+	/* We do not keep track of MAC_TX_COLL_FIRST and
+	 * MAC_TX_PEAK_ATTEMPTS events.
+	 */
+	return 0;
+}
+
+static void cas_load_firmware(struct cas *cp, cas_hp_inst_t *firmware)
+{
+	cas_hp_inst_t *inst;
+	u32 val;
+	int i;
+
+	i = 0;
+	while ((inst = firmware) && inst->note) {
+		writel(i, cp->regs + REG_HP_INSTR_RAM_ADDR);
+
+		val = CAS_BASE(HP_INSTR_RAM_HI_VAL, inst->val);
+		val |= CAS_BASE(HP_INSTR_RAM_HI_MASK, inst->mask);
+		writel(val, cp->regs + REG_HP_INSTR_RAM_DATA_HI);
+
+		val = CAS_BASE(HP_INSTR_RAM_MID_OUTARG, inst->outarg >> 10);
+		val |= CAS_BASE(HP_INSTR_RAM_MID_OUTOP, inst->outop);
+		val |= CAS_BASE(HP_INSTR_RAM_MID_FNEXT, inst->fnext);
+		val |= CAS_BASE(HP_INSTR_RAM_MID_FOFF, inst->foff);
+		val |= CAS_BASE(HP_INSTR_RAM_MID_SNEXT, inst->snext);
+		val |= CAS_BASE(HP_INSTR_RAM_MID_SOFF, inst->soff);
+		val |= CAS_BASE(HP_INSTR_RAM_MID_OP, inst->op);
+		writel(val, cp->regs + REG_HP_INSTR_RAM_DATA_MID);
+
+		val = CAS_BASE(HP_INSTR_RAM_LOW_OUTMASK, inst->outmask);
+		val |= CAS_BASE(HP_INSTR_RAM_LOW_OUTSHIFT, inst->outshift);
+		val |= CAS_BASE(HP_INSTR_RAM_LOW_OUTEN, inst->outenab);
+		val |= CAS_BASE(HP_INSTR_RAM_LOW_OUTARG, inst->outarg);
+		writel(val, cp->regs + REG_HP_INSTR_RAM_DATA_LOW);
+		++firmware;
+		++i;
+	}
+}
+
+static void cas_init_rx_dma(struct cas *cp)
+{
+	u64 desc_dma = cp->block_dvma;
+	u32 val;
+	int i, size;
+
+	/* rx free descriptors */
+	val = CAS_BASE(RX_CFG_SWIVEL, RX_SWIVEL_OFF_VAL);
+	val |= CAS_BASE(RX_CFG_DESC_RING, RX_DESC_RINGN_INDEX(0));
+	val |= CAS_BASE(RX_CFG_COMP_RING, RX_COMP_RINGN_INDEX(0));
+	if ((N_RX_DESC_RINGS > 1) &&
+	    (cp->cas_flags & CAS_FLAG_REG_PLUS))  /* do desc 2 */
+		val |= CAS_BASE(RX_CFG_DESC_RING1, RX_DESC_RINGN_INDEX(1));
+	writel(val, cp->regs + REG_RX_CFG);
+
+	val = (unsigned long) cp->init_rxds[0] -
+		(unsigned long) cp->init_block;
+	writel((desc_dma + val) >> 32, cp->regs + REG_RX_DB_HI);
+	writel((desc_dma + val) & 0xffffffff, cp->regs + REG_RX_DB_LOW);
+	writel(RX_DESC_RINGN_SIZE(0) - 4, cp->regs + REG_RX_KICK);
+
+	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
+		/* rx desc 2 is for IPSEC packets. however,
+		 * we don't it that for that purpose.
+		 */
+		val = (unsigned long) cp->init_rxds[1] -
+			(unsigned long) cp->init_block;
+		writel((desc_dma + val) >> 32, cp->regs + REG_PLUS_RX_DB1_HI);
+		writel((desc_dma + val) & 0xffffffff, cp->regs +
+		       REG_PLUS_RX_DB1_LOW);
+		writel(RX_DESC_RINGN_SIZE(1) - 4, cp->regs +
+		       REG_PLUS_RX_KICK1);
+	}
+
+	/* rx completion registers */
+	val = (unsigned long) cp->init_rxcs[0] -
+		(unsigned long) cp->init_block;
+	writel((desc_dma + val) >> 32, cp->regs + REG_RX_CB_HI);
+	writel((desc_dma + val) & 0xffffffff, cp->regs + REG_RX_CB_LOW);
+
+	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
+		/* rx comp 2-4 */
+		for (i = 1; i < MAX_RX_COMP_RINGS; i++) {
+			val = (unsigned long) cp->init_rxcs[i] -
+				(unsigned long) cp->init_block;
+			writel((desc_dma + val) >> 32, cp->regs +
+			       REG_PLUS_RX_CBN_HI(i));
+			writel((desc_dma + val) & 0xffffffff, cp->regs +
+			       REG_PLUS_RX_CBN_LOW(i));
+		}
+	}
+
+	/* read selective clear regs to prevent spurious interrupts
+	 * on reset because complete == kick.
+	 * selective clear set up to prevent interrupts on resets
+	 */
+	readl(cp->regs + REG_INTR_STATUS_ALIAS);
+	writel(INTR_RX_DONE | INTR_RX_BUF_UNAVAIL, cp->regs + REG_ALIAS_CLEAR);
+	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
+		for (i = 1; i < N_RX_COMP_RINGS; i++)
+			readl(cp->regs + REG_PLUS_INTRN_STATUS_ALIAS(i));
+
+		/* 2 is different from 3 and 4 */
+		if (N_RX_COMP_RINGS > 1)
+			writel(INTR_RX_DONE_ALT | INTR_RX_BUF_UNAVAIL_1,
+			       cp->regs + REG_PLUS_ALIASN_CLEAR(1));
+
+		for (i = 2; i < N_RX_COMP_RINGS; i++)
+			writel(INTR_RX_DONE_ALT,
+			       cp->regs + REG_PLUS_ALIASN_CLEAR(i));
+	}
+
+	/* set up pause thresholds */
+	val  = CAS_BASE(RX_PAUSE_THRESH_OFF,
+			cp->rx_pause_off / RX_PAUSE_THRESH_QUANTUM);
+	val |= CAS_BASE(RX_PAUSE_THRESH_ON,
+			cp->rx_pause_on / RX_PAUSE_THRESH_QUANTUM);
+	writel(val, cp->regs + REG_RX_PAUSE_THRESH);
+
+	/* zero out dma reassembly buffers */
+	for (i = 0; i < 64; i++) {
+		writel(i, cp->regs + REG_RX_TABLE_ADDR);
+		writel(0x0, cp->regs + REG_RX_TABLE_DATA_LOW);
+		writel(0x0, cp->regs + REG_RX_TABLE_DATA_MID);
+		writel(0x0, cp->regs + REG_RX_TABLE_DATA_HI);
+	}
+
+	/* make sure address register is 0 for normal operation */
+	writel(0x0, cp->regs + REG_RX_CTRL_FIFO_ADDR);
+	writel(0x0, cp->regs + REG_RX_IPP_FIFO_ADDR);
+
+	/* interrupt mitigation */
+#ifdef USE_RX_BLANK
+	val = CAS_BASE(RX_BLANK_INTR_TIME, RX_BLANK_INTR_TIME_VAL);
+	val |= CAS_BASE(RX_BLANK_INTR_PKT, RX_BLANK_INTR_PKT_VAL);
+	writel(val, cp->regs + REG_RX_BLANK);
+#else
+	writel(0x0, cp->regs + REG_RX_BLANK);
+#endif
+
+	/* interrupt generation as a function of low water marks for
+	 * free desc and completion entries. these are used to trigger
+	 * housekeeping for rx descs. we don't use the free interrupt
+	 * as it's not very useful
+	 */
+	/* val = CAS_BASE(RX_AE_THRESH_FREE, RX_AE_FREEN_VAL(0)); */
+	val = CAS_BASE(RX_AE_THRESH_COMP, RX_AE_COMP_VAL);
+	writel(val, cp->regs + REG_RX_AE_THRESH);
+	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
+		val = CAS_BASE(RX_AE1_THRESH_FREE, RX_AE_FREEN_VAL(1));
+		writel(val, cp->regs + REG_PLUS_RX_AE1_THRESH);
+	}
+
+	/* Random early detect registers. useful for congestion avoidance.
+	 * this should be tunable.
+	 */
+	writel(0x0, cp->regs + REG_RX_RED);
+
+	/* receive page sizes. default == 2K (0x800) */
+	val = 0;
+	if (cp->page_size == 0x1000)
+		val = 0x1;
+	else if (cp->page_size == 0x2000)
+		val = 0x2;
+	else if (cp->page_size == 0x4000)
+		val = 0x3;
+
+	/* round mtu + offset. constrain to page size. */
+	size = cp->dev->mtu + 64;
+	if (size > cp->page_size)
+		size = cp->page_size;
+
+	if (size <= 0x400)
+		i = 0x0;
+	else if (size <= 0x800)
+		i = 0x1;
+	else if (size <= 0x1000)
+		i = 0x2;
+	else
+		i = 0x3;
+
+	cp->mtu_stride = 1 << (i + 10);
+	val  = CAS_BASE(RX_PAGE_SIZE, val);
+	val |= CAS_BASE(RX_PAGE_SIZE_MTU_STRIDE, i);
+	val |= CAS_BASE(RX_PAGE_SIZE_MTU_COUNT, cp->page_size >> (i + 10));
+	val |= CAS_BASE(RX_PAGE_SIZE_MTU_OFF, 0x1);
+	writel(val, cp->regs + REG_RX_PAGE_SIZE);
+
+	/* enable the header parser if desired */
+	if (CAS_HP_FIRMWARE == cas_prog_null)
+		return;
+
+	val = CAS_BASE(HP_CFG_NUM_CPU, CAS_NCPUS > 63 ? 0 : CAS_NCPUS);
+	val |= HP_CFG_PARSE_EN | HP_CFG_SYN_INC_MASK;
+	val |= CAS_BASE(HP_CFG_TCP_THRESH, HP_TCP_THRESH_VAL);
+	writel(val, cp->regs + REG_HP_CFG);
+}
+
+static inline void cas_rxc_init(struct cas_rx_comp *rxc)
+{
+	memset(rxc, 0, sizeof(*rxc));
+	rxc->word4 = cpu_to_le64(RX_COMP4_ZERO);
+}
+
+/* NOTE: we use the ENC RX DESC ring for spares. the rx_page[0,1]
+ * flipping is protected by the fact that the chip will not
+ * hand back the same page index while it's being processed.
+ */
+static inline cas_page_t *cas_page_spare(struct cas *cp, const int index)
+{
+	cas_page_t *page = cp->rx_pages[1][index];
+	cas_page_t *new;
+
+	if (page_count(page->buffer) == 1)
+		return page;
+
+	new = cas_page_dequeue(cp);
+	if (new) {
+		spin_lock(&cp->rx_inuse_lock);
+		list_add(&page->list, &cp->rx_inuse_list);
+		spin_unlock(&cp->rx_inuse_lock);
+	}
+	return new;
+}
+
+/* this needs to be changed if we actually use the ENC RX DESC ring */
+static cas_page_t *cas_page_swap(struct cas *cp, const int ring,
+				 const int index)
+{
+	cas_page_t **page0 = cp->rx_pages[0];
+	cas_page_t **page1 = cp->rx_pages[1];
+
+	/* swap if buffer is in use */
+	if (page_count(page0[index]->buffer) > 1) {
+		cas_page_t *new = cas_page_spare(cp, index);
+		if (new) {
+			page1[index] = page0[index];
+			page0[index] = new;
+		}
+	}
+	RX_USED_SET(page0[index], 0);
+	return page0[index];
+}
+
+static void cas_clean_rxds(struct cas *cp)
+{
+	/* only clean ring 0 as ring 1 is used for spare buffers */
+        struct cas_rx_desc *rxd = cp->init_rxds[0];
+	int i, size;
+
+	/* release all rx flows */
+	for (i = 0; i < N_RX_FLOWS; i++) {
+		struct sk_buff *skb;
+		while ((skb = __skb_dequeue(&cp->rx_flows[i]))) {
+			cas_skb_release(skb);
+		}
+	}
+
+	/* initialize descriptors */
+	size = RX_DESC_RINGN_SIZE(0);
+	for (i = 0; i < size; i++) {
+		cas_page_t *page = cas_page_swap(cp, 0, i);
+		rxd[i].buffer = cpu_to_le64(page->dma_addr);
+		rxd[i].index  = cpu_to_le64(CAS_BASE(RX_INDEX_NUM, i) |
+					    CAS_BASE(RX_INDEX_RING, 0));
+	}
+
+	cp->rx_old[0]  = RX_DESC_RINGN_SIZE(0) - 4;
+	cp->rx_last[0] = 0;
+	cp->cas_flags &= ~CAS_FLAG_RXD_POST(0);
+}
+
+static void cas_clean_rxcs(struct cas *cp)
+{
+	int i, j;
+
+	/* take ownership of rx comp descriptors */
+	memset(cp->rx_cur, 0, sizeof(*cp->rx_cur)*N_RX_COMP_RINGS);
+	memset(cp->rx_new, 0, sizeof(*cp->rx_new)*N_RX_COMP_RINGS);
+	for (i = 0; i < N_RX_COMP_RINGS; i++) {
+		struct cas_rx_comp *rxc = cp->init_rxcs[i];
+		for (j = 0; j < RX_COMP_RINGN_SIZE(i); j++) {
+			cas_rxc_init(rxc + j);
+		}
+	}
+}
+
+#if 0
+/* When we get a RX fifo overflow, the RX unit is probably hung
+ * so we do the following.
+ *
+ * If any part of the reset goes wrong, we return 1 and that causes the
+ * whole chip to be reset.
+ */
+static int cas_rxmac_reset(struct cas *cp)
+{
+	struct net_device *dev = cp->dev;
+	int limit;
+	u32 val;
+
+	/* First, reset MAC RX. */
+	writel(cp->mac_rx_cfg & ~MAC_RX_CFG_EN, cp->regs + REG_MAC_RX_CFG);
+	for (limit = 0; limit < STOP_TRIES; limit++) {
+		if (!(readl(cp->regs + REG_MAC_RX_CFG) & MAC_RX_CFG_EN))
+			break;
+		udelay(10);
+	}
+	if (limit == STOP_TRIES) {
+		netdev_err(dev, "RX MAC will not disable, resetting whole chip\n");
+		return 1;
+	}
+
+	/* Second, disable RX DMA. */
+	writel(0, cp->regs + REG_RX_CFG);
+	for (limit = 0; limit < STOP_TRIES; limit++) {
+		if (!(readl(cp->regs + REG_RX_CFG) & RX_CFG_DMA_EN))
+			break;
+		udelay(10);
+	}
+	if (limit == STOP_TRIES) {
+		netdev_err(dev, "RX DMA will not disable, resetting whole chip\n");
+		return 1;
+	}
+
+	mdelay(5);
+
+	/* Execute RX reset command. */
+	writel(SW_RESET_RX, cp->regs + REG_SW_RESET);
+	for (limit = 0; limit < STOP_TRIES; limit++) {
+		if (!(readl(cp->regs + REG_SW_RESET) & SW_RESET_RX))
+			break;
+		udelay(10);
+	}
+	if (limit == STOP_TRIES) {
+		netdev_err(dev, "RX reset command will not execute, resetting whole chip\n");
+		return 1;
+	}
+
+	/* reset driver rx state */
+	cas_clean_rxds(cp);
+	cas_clean_rxcs(cp);
+
+	/* Now, reprogram the rest of RX unit. */
+	cas_init_rx_dma(cp);
+
+	/* re-enable */
+	val = readl(cp->regs + REG_RX_CFG);
+	writel(val | RX_CFG_DMA_EN, cp->regs + REG_RX_CFG);
+	writel(MAC_RX_FRAME_RECV, cp->regs + REG_MAC_RX_MASK);
+	val = readl(cp->regs + REG_MAC_RX_CFG);
+	writel(val | MAC_RX_CFG_EN, cp->regs + REG_MAC_RX_CFG);
+	return 0;
+}
+#endif
+
+static int cas_rxmac_interrupt(struct net_device *dev, struct cas *cp,
+			       u32 status)
+{
+	u32 stat = readl(cp->regs + REG_MAC_RX_STATUS);
+
+	if (!stat)
+		return 0;
+
+	netif_dbg(cp, intr, cp->dev, "rxmac interrupt, stat: 0x%x\n", stat);
+
+	/* these are all rollovers */
+	spin_lock(&cp->stat_lock[0]);
+	if (stat & MAC_RX_ALIGN_ERR)
+		cp->net_stats[0].rx_frame_errors += 0x10000;
+
+	if (stat & MAC_RX_CRC_ERR)
+		cp->net_stats[0].rx_crc_errors += 0x10000;
+
+	if (stat & MAC_RX_LEN_ERR)
+		cp->net_stats[0].rx_length_errors += 0x10000;
+
+	if (stat & MAC_RX_OVERFLOW) {
+		cp->net_stats[0].rx_over_errors++;
+		cp->net_stats[0].rx_fifo_errors++;
+	}
+
+	/* We do not track MAC_RX_FRAME_COUNT and MAC_RX_VIOL_ERR
+	 * events.
+	 */
+	spin_unlock(&cp->stat_lock[0]);
+	return 0;
+}
+
+static int cas_mac_interrupt(struct net_device *dev, struct cas *cp,
+			     u32 status)
+{
+	u32 stat = readl(cp->regs + REG_MAC_CTRL_STATUS);
+
+	if (!stat)
+		return 0;
+
+	netif_printk(cp, intr, KERN_DEBUG, cp->dev,
+		     "mac interrupt, stat: 0x%x\n", stat);
+
+	/* This interrupt is just for pause frame and pause
+	 * tracking.  It is useful for diagnostics and debug
+	 * but probably by default we will mask these events.
+	 */
+	if (stat & MAC_CTRL_PAUSE_STATE)
+		cp->pause_entered++;
+
+	if (stat & MAC_CTRL_PAUSE_RECEIVED)
+		cp->pause_last_time_recvd = (stat >> 16);
+
+	return 0;
+}
+
+
+/* Must be invoked under cp->lock. */
+static inline int cas_mdio_link_not_up(struct cas *cp)
+{
+	u16 val;
+
+	switch (cp->lstate) {
+	case link_force_ret:
+		netif_info(cp, link, cp->dev, "Autoneg failed again, keeping forced mode\n");
+		cas_phy_write(cp, MII_BMCR, cp->link_fcntl);
+		cp->timer_ticks = 5;
+		cp->lstate = link_force_ok;
+		cp->link_transition = LINK_TRANSITION_LINK_CONFIG;
+		break;
+
+	case link_aneg:
+		val = cas_phy_read(cp, MII_BMCR);
+
+		/* Try forced modes. we try things in the following order:
+		 * 1000 full -> 100 full/half -> 10 half
+		 */
+		val &= ~(BMCR_ANRESTART | BMCR_ANENABLE);
+		val |= BMCR_FULLDPLX;
+		val |= (cp->cas_flags & CAS_FLAG_1000MB_CAP) ?
+			CAS_BMCR_SPEED1000 : BMCR_SPEED100;
+		cas_phy_write(cp, MII_BMCR, val);
+		cp->timer_ticks = 5;
+		cp->lstate = link_force_try;
+		cp->link_transition = LINK_TRANSITION_LINK_CONFIG;
+		break;
+
+	case link_force_try:
+		/* Downgrade from 1000 to 100 to 10 Mbps if necessary. */
+		val = cas_phy_read(cp, MII_BMCR);
+		cp->timer_ticks = 5;
+		if (val & CAS_BMCR_SPEED1000) { /* gigabit */
+			val &= ~CAS_BMCR_SPEED1000;
+			val |= (BMCR_SPEED100 | BMCR_FULLDPLX);
+			cas_phy_write(cp, MII_BMCR, val);
+			break;
+		}
+
+		if (val & BMCR_SPEED100) {
+			if (val & BMCR_FULLDPLX) /* fd failed */
+				val &= ~BMCR_FULLDPLX;
+			else { /* 100Mbps failed */
+				val &= ~BMCR_SPEED100;
+			}
+			cas_phy_write(cp, MII_BMCR, val);
+			break;
+		}
+	default:
+		break;
+	}
+	return 0;
+}
+
+
+/* must be invoked with cp->lock held */
+static int cas_mii_link_check(struct cas *cp, const u16 bmsr)
+{
+	int restart;
+
+	if (bmsr & BMSR_LSTATUS) {
+		/* Ok, here we got a link. If we had it due to a forced
+		 * fallback, and we were configured for autoneg, we
+		 * retry a short autoneg pass. If you know your hub is
+		 * broken, use ethtool ;)
+		 */
+		if ((cp->lstate == link_force_try) &&
+		    (cp->link_cntl & BMCR_ANENABLE)) {
+			cp->lstate = link_force_ret;
+			cp->link_transition = LINK_TRANSITION_LINK_CONFIG;
+			cas_mif_poll(cp, 0);
+			cp->link_fcntl = cas_phy_read(cp, MII_BMCR);
+			cp->timer_ticks = 5;
+			if (cp->opened)
+				netif_info(cp, link, cp->dev,
+					   "Got link after fallback, retrying autoneg once...\n");
+			cas_phy_write(cp, MII_BMCR,
+				      cp->link_fcntl | BMCR_ANENABLE |
+				      BMCR_ANRESTART);
+			cas_mif_poll(cp, 1);
+
+		} else if (cp->lstate != link_up) {
+			cp->lstate = link_up;
+			cp->link_transition = LINK_TRANSITION_LINK_UP;
+
+			if (cp->opened) {
+				cas_set_link_modes(cp);
+				netif_carrier_on(cp->dev);
+			}
+		}
+		return 0;
+	}
+
+	/* link not up. if the link was previously up, we restart the
+	 * whole process
+	 */
+	restart = 0;
+	if (cp->lstate == link_up) {
+		cp->lstate = link_down;
+		cp->link_transition = LINK_TRANSITION_LINK_DOWN;
+
+		netif_carrier_off(cp->dev);
+		if (cp->opened)
+			netif_info(cp, link, cp->dev, "Link down\n");
+		restart = 1;
+
+	} else if (++cp->timer_ticks > 10)
+		cas_mdio_link_not_up(cp);
+
+	return restart;
+}
+
+static int cas_mif_interrupt(struct net_device *dev, struct cas *cp,
+			     u32 status)
+{
+	u32 stat = readl(cp->regs + REG_MIF_STATUS);
+	u16 bmsr;
+
+	/* check for a link change */
+	if (CAS_VAL(MIF_STATUS_POLL_STATUS, stat) == 0)
+		return 0;
+
+	bmsr = CAS_VAL(MIF_STATUS_POLL_DATA, stat);
+	return cas_mii_link_check(cp, bmsr);
+}
+
+static int cas_pci_interrupt(struct net_device *dev, struct cas *cp,
+			     u32 status)
+{
+	u32 stat = readl(cp->regs + REG_PCI_ERR_STATUS);
+
+	if (!stat)
+		return 0;
+
+	netdev_err(dev, "PCI error [%04x:%04x]",
+		   stat, readl(cp->regs + REG_BIM_DIAG));
+
+	/* cassini+ has this reserved */
+	if ((stat & PCI_ERR_BADACK) &&
+	    ((cp->cas_flags & CAS_FLAG_REG_PLUS) == 0))
+		pr_cont(" <No ACK64# during ABS64 cycle>");
+
+	if (stat & PCI_ERR_DTRTO)
+		pr_cont(" <Delayed transaction timeout>");
+	if (stat & PCI_ERR_OTHER)
+		pr_cont(" <other>");
+	if (stat & PCI_ERR_BIM_DMA_WRITE)
+		pr_cont(" <BIM DMA 0 write req>");
+	if (stat & PCI_ERR_BIM_DMA_READ)
+		pr_cont(" <BIM DMA 0 read req>");
+	pr_cont("\n");
+
+	if (stat & PCI_ERR_OTHER) {
+		u16 cfg;
+
+		/* Interrogate PCI config space for the
+		 * true cause.
+		 */
+		pci_read_config_word(cp->pdev, PCI_STATUS, &cfg);
+		netdev_err(dev, "Read PCI cfg space status [%04x]\n", cfg);
+		if (cfg & PCI_STATUS_PARITY)
+			netdev_err(dev, "PCI parity error detected\n");
+		if (cfg & PCI_STATUS_SIG_TARGET_ABORT)
+			netdev_err(dev, "PCI target abort\n");
+		if (cfg & PCI_STATUS_REC_TARGET_ABORT)
+			netdev_err(dev, "PCI master acks target abort\n");
+		if (cfg & PCI_STATUS_REC_MASTER_ABORT)
+			netdev_err(dev, "PCI master abort\n");
+		if (cfg & PCI_STATUS_SIG_SYSTEM_ERROR)
+			netdev_err(dev, "PCI system error SERR#\n");
+		if (cfg & PCI_STATUS_DETECTED_PARITY)
+			netdev_err(dev, "PCI parity error\n");
+
+		/* Write the error bits back to clear them. */
+		cfg &= (PCI_STATUS_PARITY |
+			PCI_STATUS_SIG_TARGET_ABORT |
+			PCI_STATUS_REC_TARGET_ABORT |
+			PCI_STATUS_REC_MASTER_ABORT |
+			PCI_STATUS_SIG_SYSTEM_ERROR |
+			PCI_STATUS_DETECTED_PARITY);
+		pci_write_config_word(cp->pdev, PCI_STATUS, cfg);
+	}
+
+	/* For all PCI errors, we should reset the chip. */
+	return 1;
+}
+
+/* All non-normal interrupt conditions get serviced here.
+ * Returns non-zero if we should just exit the interrupt
+ * handler right now (ie. if we reset the card which invalidates
+ * all of the other original irq status bits).
+ */
+static int cas_abnormal_irq(struct net_device *dev, struct cas *cp,
+			    u32 status)
+{
+	if (status & INTR_RX_TAG_ERROR) {
+		/* corrupt RX tag framing */
+		netif_printk(cp, rx_err, KERN_DEBUG, cp->dev,
+			     "corrupt rx tag framing\n");
+		spin_lock(&cp->stat_lock[0]);
+		cp->net_stats[0].rx_errors++;
+		spin_unlock(&cp->stat_lock[0]);
+		goto do_reset;
+	}
+
+	if (status & INTR_RX_LEN_MISMATCH) {
+		/* length mismatch. */
+		netif_printk(cp, rx_err, KERN_DEBUG, cp->dev,
+			     "length mismatch for rx frame\n");
+		spin_lock(&cp->stat_lock[0]);
+		cp->net_stats[0].rx_errors++;
+		spin_unlock(&cp->stat_lock[0]);
+		goto do_reset;
+	}
+
+	if (status & INTR_PCS_STATUS) {
+		if (cas_pcs_interrupt(dev, cp, status))
+			goto do_reset;
+	}
+
+	if (status & INTR_TX_MAC_STATUS) {
+		if (cas_txmac_interrupt(dev, cp, status))
+			goto do_reset;
+	}
+
+	if (status & INTR_RX_MAC_STATUS) {
+		if (cas_rxmac_interrupt(dev, cp, status))
+			goto do_reset;
+	}
+
+	if (status & INTR_MAC_CTRL_STATUS) {
+		if (cas_mac_interrupt(dev, cp, status))
+			goto do_reset;
+	}
+
+	if (status & INTR_MIF_STATUS) {
+		if (cas_mif_interrupt(dev, cp, status))
+			goto do_reset;
+	}
+
+	if (status & INTR_PCI_ERROR_STATUS) {
+		if (cas_pci_interrupt(dev, cp, status))
+			goto do_reset;
+	}
+	return 0;
+
+do_reset:
+#if 1
+	atomic_inc(&cp->reset_task_pending);
+	atomic_inc(&cp->reset_task_pending_all);
+	netdev_err(dev, "reset called in cas_abnormal_irq [0x%x]\n", status);
+	schedule_work(&cp->reset_task);
+#else
+	atomic_set(&cp->reset_task_pending, CAS_RESET_ALL);
+	netdev_err(dev, "reset called in cas_abnormal_irq\n");
+	schedule_work(&cp->reset_task);
+#endif
+	return 1;
+}
+
+/* NOTE: CAS_TABORT returns 1 or 2 so that it can be used when
+ *       determining whether to do a netif_stop/wakeup
+ */
+#define CAS_TABORT(x)      (((x)->cas_flags & CAS_FLAG_TARGET_ABORT) ? 2 : 1)
+#define CAS_ROUND_PAGE(x)  (((x) + PAGE_SIZE - 1) & PAGE_MASK)
+static inline int cas_calc_tabort(struct cas *cp, const unsigned long addr,
+				  const int len)
+{
+	unsigned long off = addr + len;
+
+	if (CAS_TABORT(cp) == 1)
+		return 0;
+	if ((CAS_ROUND_PAGE(off) - off) > TX_TARGET_ABORT_LEN)
+		return 0;
+	return TX_TARGET_ABORT_LEN;
+}
+
+static inline void cas_tx_ringN(struct cas *cp, int ring, int limit)
+{
+	struct cas_tx_desc *txds;
+	struct sk_buff **skbs;
+	struct net_device *dev = cp->dev;
+	int entry, count;
+
+	spin_lock(&cp->tx_lock[ring]);
+	txds = cp->init_txds[ring];
+	skbs = cp->tx_skbs[ring];
+	entry = cp->tx_old[ring];
+
+	count = TX_BUFF_COUNT(ring, entry, limit);
+	while (entry != limit) {
+		struct sk_buff *skb = skbs[entry];
+		dma_addr_t daddr;
+		u32 dlen;
+		int frag;
+
+		if (!skb) {
+			/* this should never occur */
+			entry = TX_DESC_NEXT(ring, entry);
+			continue;
+		}
+
+		/* however, we might get only a partial skb release. */
+		count -= skb_shinfo(skb)->nr_frags +
+			+ cp->tx_tiny_use[ring][entry].nbufs + 1;
+		if (count < 0)
+			break;
+
+		netif_printk(cp, tx_done, KERN_DEBUG, cp->dev,
+			     "tx[%d] done, slot %d\n", ring, entry);
+
+		skbs[entry] = NULL;
+		cp->tx_tiny_use[ring][entry].nbufs = 0;
+
+		for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
+			struct cas_tx_desc *txd = txds + entry;
+
+			daddr = le64_to_cpu(txd->buffer);
+			dlen = CAS_VAL(TX_DESC_BUFLEN,
+				       le64_to_cpu(txd->control));
+			pci_unmap_page(cp->pdev, daddr, dlen,
+				       PCI_DMA_TODEVICE);
+			entry = TX_DESC_NEXT(ring, entry);
+
+			/* tiny buffer may follow */
+			if (cp->tx_tiny_use[ring][entry].used) {
+				cp->tx_tiny_use[ring][entry].used = 0;
+				entry = TX_DESC_NEXT(ring, entry);
+			}
+		}
+
+		spin_lock(&cp->stat_lock[ring]);
+		cp->net_stats[ring].tx_packets++;
+		cp->net_stats[ring].tx_bytes += skb->len;
+		spin_unlock(&cp->stat_lock[ring]);
+		dev_kfree_skb_irq(skb);
+	}
+	cp->tx_old[ring] = entry;
+
+	/* this is wrong for multiple tx rings. the net device needs
+	 * multiple queues for this to do the right thing.  we wait
+	 * for 2*packets to be available when using tiny buffers
+	 */
+	if (netif_queue_stopped(dev) &&
+	    (TX_BUFFS_AVAIL(cp, ring) > CAS_TABORT(cp)*(MAX_SKB_FRAGS + 1)))
+		netif_wake_queue(dev);
+	spin_unlock(&cp->tx_lock[ring]);
+}
+
+static void cas_tx(struct net_device *dev, struct cas *cp,
+		   u32 status)
+{
+        int limit, ring;
+#ifdef USE_TX_COMPWB
+	u64 compwb = le64_to_cpu(cp->init_block->tx_compwb);
+#endif
+	netif_printk(cp, intr, KERN_DEBUG, cp->dev,
+		     "tx interrupt, status: 0x%x, %llx\n",
+		     status, (unsigned long long)compwb);
+	/* process all the rings */
+	for (ring = 0; ring < N_TX_RINGS; ring++) {
+#ifdef USE_TX_COMPWB
+		/* use the completion writeback registers */
+		limit = (CAS_VAL(TX_COMPWB_MSB, compwb) << 8) |
+			CAS_VAL(TX_COMPWB_LSB, compwb);
+		compwb = TX_COMPWB_NEXT(compwb);
+#else
+		limit = readl(cp->regs + REG_TX_COMPN(ring));
+#endif
+		if (cp->tx_old[ring] != limit)
+			cas_tx_ringN(cp, ring, limit);
+	}
+}
+
+
+static int cas_rx_process_pkt(struct cas *cp, struct cas_rx_comp *rxc,
+			      int entry, const u64 *words,
+			      struct sk_buff **skbref)
+{
+	int dlen, hlen, len, i, alloclen;
+	int off, swivel = RX_SWIVEL_OFF_VAL;
+	struct cas_page *page;
+	struct sk_buff *skb;
+	void *addr, *crcaddr;
+	__sum16 csum;
+	char *p;
+
+	hlen = CAS_VAL(RX_COMP2_HDR_SIZE, words[1]);
+	dlen = CAS_VAL(RX_COMP1_DATA_SIZE, words[0]);
+	len  = hlen + dlen;
+
+	if (RX_COPY_ALWAYS || (words[2] & RX_COMP3_SMALL_PKT))
+		alloclen = len;
+	else
+		alloclen = max(hlen, RX_COPY_MIN);
+
+	skb = netdev_alloc_skb(cp->dev, alloclen + swivel + cp->crc_size);
+	if (skb == NULL)
+		return -1;
+
+	*skbref = skb;
+	skb_reserve(skb, swivel);
+
+	p = skb->data;
+	addr = crcaddr = NULL;
+	if (hlen) { /* always copy header pages */
+		i = CAS_VAL(RX_COMP2_HDR_INDEX, words[1]);
+		page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
+		off = CAS_VAL(RX_COMP2_HDR_OFF, words[1]) * 0x100 +
+			swivel;
+
+		i = hlen;
+		if (!dlen) /* attach FCS */
+			i += cp->crc_size;
+		pci_dma_sync_single_for_cpu(cp->pdev, page->dma_addr + off, i,
+				    PCI_DMA_FROMDEVICE);
+		addr = cas_page_map(page->buffer);
+		memcpy(p, addr + off, i);
+		pci_dma_sync_single_for_device(cp->pdev, page->dma_addr + off, i,
+				    PCI_DMA_FROMDEVICE);
+		cas_page_unmap(addr);
+		RX_USED_ADD(page, 0x100);
+		p += hlen;
+		swivel = 0;
+	}
+
+
+	if (alloclen < (hlen + dlen)) {
+		skb_frag_t *frag = skb_shinfo(skb)->frags;
+
+		/* normal or jumbo packets. we use frags */
+		i = CAS_VAL(RX_COMP1_DATA_INDEX, words[0]);
+		page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
+		off = CAS_VAL(RX_COMP1_DATA_OFF, words[0]) + swivel;
+
+		hlen = min(cp->page_size - off, dlen);
+		if (hlen < 0) {
+			netif_printk(cp, rx_err, KERN_DEBUG, cp->dev,
+				     "rx page overflow: %d\n", hlen);
+			dev_kfree_skb_irq(skb);
+			return -1;
+		}
+		i = hlen;
+		if (i == dlen)  /* attach FCS */
+			i += cp->crc_size;
+		pci_dma_sync_single_for_cpu(cp->pdev, page->dma_addr + off, i,
+				    PCI_DMA_FROMDEVICE);
+
+		/* make sure we always copy a header */
+		swivel = 0;
+		if (p == (char *) skb->data) { /* not split */
+			addr = cas_page_map(page->buffer);
+			memcpy(p, addr + off, RX_COPY_MIN);
+			pci_dma_sync_single_for_device(cp->pdev, page->dma_addr + off, i,
+					PCI_DMA_FROMDEVICE);
+			cas_page_unmap(addr);
+			off += RX_COPY_MIN;
+			swivel = RX_COPY_MIN;
+			RX_USED_ADD(page, cp->mtu_stride);
+		} else {
+			RX_USED_ADD(page, hlen);
+		}
+		skb_put(skb, alloclen);
+
+		skb_shinfo(skb)->nr_frags++;
+		skb->data_len += hlen - swivel;
+		skb->truesize += hlen - swivel;
+		skb->len      += hlen - swivel;
+
+		__skb_frag_set_page(frag, page->buffer);
+		__skb_frag_ref(frag);
+		frag->page_offset = off;
+		skb_frag_size_set(frag, hlen - swivel);
+
+		/* any more data? */
+		if ((words[0] & RX_COMP1_SPLIT_PKT) && ((dlen -= hlen) > 0)) {
+			hlen = dlen;
+			off = 0;
+
+			i = CAS_VAL(RX_COMP2_NEXT_INDEX, words[1]);
+			page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
+			pci_dma_sync_single_for_cpu(cp->pdev, page->dma_addr,
+					    hlen + cp->crc_size,
+					    PCI_DMA_FROMDEVICE);
+			pci_dma_sync_single_for_device(cp->pdev, page->dma_addr,
+					    hlen + cp->crc_size,
+					    PCI_DMA_FROMDEVICE);
+
+			skb_shinfo(skb)->nr_frags++;
+			skb->data_len += hlen;
+			skb->len      += hlen;
+			frag++;
+
+			__skb_frag_set_page(frag, page->buffer);
+			__skb_frag_ref(frag);
+			frag->page_offset = 0;
+			skb_frag_size_set(frag, hlen);
+			RX_USED_ADD(page, hlen + cp->crc_size);
+		}
+
+		if (cp->crc_size) {
+			addr = cas_page_map(page->buffer);
+			crcaddr  = addr + off + hlen;
+		}
+
+	} else {
+		/* copying packet */
+		if (!dlen)
+			goto end_copy_pkt;
+
+		i = CAS_VAL(RX_COMP1_DATA_INDEX, words[0]);
+		page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
+		off = CAS_VAL(RX_COMP1_DATA_OFF, words[0]) + swivel;
+		hlen = min(cp->page_size - off, dlen);
+		if (hlen < 0) {
+			netif_printk(cp, rx_err, KERN_DEBUG, cp->dev,
+				     "rx page overflow: %d\n", hlen);
+			dev_kfree_skb_irq(skb);
+			return -1;
+		}
+		i = hlen;
+		if (i == dlen) /* attach FCS */
+			i += cp->crc_size;
+		pci_dma_sync_single_for_cpu(cp->pdev, page->dma_addr + off, i,
+				    PCI_DMA_FROMDEVICE);
+		addr = cas_page_map(page->buffer);
+		memcpy(p, addr + off, i);
+		pci_dma_sync_single_for_device(cp->pdev, page->dma_addr + off, i,
+				    PCI_DMA_FROMDEVICE);
+		cas_page_unmap(addr);
+		if (p == (char *) skb->data) /* not split */
+			RX_USED_ADD(page, cp->mtu_stride);
+		else
+			RX_USED_ADD(page, i);
+
+		/* any more data? */
+		if ((words[0] & RX_COMP1_SPLIT_PKT) && ((dlen -= hlen) > 0)) {
+			p += hlen;
+			i = CAS_VAL(RX_COMP2_NEXT_INDEX, words[1]);
+			page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
+			pci_dma_sync_single_for_cpu(cp->pdev, page->dma_addr,
+					    dlen + cp->crc_size,
+					    PCI_DMA_FROMDEVICE);
+			addr = cas_page_map(page->buffer);
+			memcpy(p, addr, dlen + cp->crc_size);
+			pci_dma_sync_single_for_device(cp->pdev, page->dma_addr,
+					    dlen + cp->crc_size,
+					    PCI_DMA_FROMDEVICE);
+			cas_page_unmap(addr);
+			RX_USED_ADD(page, dlen + cp->crc_size);
+		}
+end_copy_pkt:
+		if (cp->crc_size) {
+			addr    = NULL;
+			crcaddr = skb->data + alloclen;
+		}
+		skb_put(skb, alloclen);
+	}
+
+	csum = (__force __sum16)htons(CAS_VAL(RX_COMP4_TCP_CSUM, words[3]));
+	if (cp->crc_size) {
+		/* checksum includes FCS. strip it out. */
+		csum = csum_fold(csum_partial(crcaddr, cp->crc_size,
+					      csum_unfold(csum)));
+		if (addr)
+			cas_page_unmap(addr);
+	}
+	skb->protocol = eth_type_trans(skb, cp->dev);
+	if (skb->protocol == htons(ETH_P_IP)) {
+		skb->csum = csum_unfold(~csum);
+		skb->ip_summed = CHECKSUM_COMPLETE;
+	} else
+		skb_checksum_none_assert(skb);
+	return len;
+}
+
+
+/* we can handle up to 64 rx flows at a time. we do the same thing
+ * as nonreassm except that we batch up the buffers.
+ * NOTE: we currently just treat each flow as a bunch of packets that
+ *       we pass up. a better way would be to coalesce the packets
+ *       into a jumbo packet. to do that, we need to do the following:
+ *       1) the first packet will have a clean split between header and
+ *          data. save both.
+ *       2) each time the next flow packet comes in, extend the
+ *          data length and merge the checksums.
+ *       3) on flow release, fix up the header.
+ *       4) make sure the higher layer doesn't care.
+ * because packets get coalesced, we shouldn't run into fragment count
+ * issues.
+ */
+static inline void cas_rx_flow_pkt(struct cas *cp, const u64 *words,
+				   struct sk_buff *skb)
+{
+	int flowid = CAS_VAL(RX_COMP3_FLOWID, words[2]) & (N_RX_FLOWS - 1);
+	struct sk_buff_head *flow = &cp->rx_flows[flowid];
+
+	/* this is protected at a higher layer, so no need to
+	 * do any additional locking here. stick the buffer
+	 * at the end.
+	 */
+	__skb_queue_tail(flow, skb);
+	if (words[0] & RX_COMP1_RELEASE_FLOW) {
+		while ((skb = __skb_dequeue(flow))) {
+			cas_skb_release(skb);
+		}
+	}
+}
+
+/* put rx descriptor back on ring. if a buffer is in use by a higher
+ * layer, this will need to put in a replacement.
+ */
+static void cas_post_page(struct cas *cp, const int ring, const int index)
+{
+	cas_page_t *new;
+	int entry;
+
+	entry = cp->rx_old[ring];
+
+	new = cas_page_swap(cp, ring, index);
+	cp->init_rxds[ring][entry].buffer = cpu_to_le64(new->dma_addr);
+	cp->init_rxds[ring][entry].index  =
+		cpu_to_le64(CAS_BASE(RX_INDEX_NUM, index) |
+			    CAS_BASE(RX_INDEX_RING, ring));
+
+	entry = RX_DESC_ENTRY(ring, entry + 1);
+	cp->rx_old[ring] = entry;
+
+	if (entry % 4)
+		return;
+
+	if (ring == 0)
+		writel(entry, cp->regs + REG_RX_KICK);
+	else if ((N_RX_DESC_RINGS > 1) &&
+		 (cp->cas_flags & CAS_FLAG_REG_PLUS))
+		writel(entry, cp->regs + REG_PLUS_RX_KICK1);
+}
+
+
+/* only when things are bad */
+static int cas_post_rxds_ringN(struct cas *cp, int ring, int num)
+{
+	unsigned int entry, last, count, released;
+	int cluster;
+	cas_page_t **page = cp->rx_pages[ring];
+
+	entry = cp->rx_old[ring];
+
+	netif_printk(cp, intr, KERN_DEBUG, cp->dev,
+		     "rxd[%d] interrupt, done: %d\n", ring, entry);
+
+	cluster = -1;
+	count = entry & 0x3;
+	last = RX_DESC_ENTRY(ring, num ? entry + num - 4: entry - 4);
+	released = 0;
+	while (entry != last) {
+		/* make a new buffer if it's still in use */
+		if (page_count(page[entry]->buffer) > 1) {
+			cas_page_t *new = cas_page_dequeue(cp);
+			if (!new) {
+				/* let the timer know that we need to
+				 * do this again
+				 */
+				cp->cas_flags |= CAS_FLAG_RXD_POST(ring);
+				if (!timer_pending(&cp->link_timer))
+					mod_timer(&cp->link_timer, jiffies +
+						  CAS_LINK_FAST_TIMEOUT);
+				cp->rx_old[ring]  = entry;
+				cp->rx_last[ring] = num ? num - released : 0;
+				return -ENOMEM;
+			}
+			spin_lock(&cp->rx_inuse_lock);
+			list_add(&page[entry]->list, &cp->rx_inuse_list);
+			spin_unlock(&cp->rx_inuse_lock);
+			cp->init_rxds[ring][entry].buffer =
+				cpu_to_le64(new->dma_addr);
+			page[entry] = new;
+
+		}
+
+		if (++count == 4) {
+			cluster = entry;
+			count = 0;
+		}
+		released++;
+		entry = RX_DESC_ENTRY(ring, entry + 1);
+	}
+	cp->rx_old[ring] = entry;
+
+	if (cluster < 0)
+		return 0;
+
+	if (ring == 0)
+		writel(cluster, cp->regs + REG_RX_KICK);
+	else if ((N_RX_DESC_RINGS > 1) &&
+		 (cp->cas_flags & CAS_FLAG_REG_PLUS))
+		writel(cluster, cp->regs + REG_PLUS_RX_KICK1);
+	return 0;
+}
+
+
+/* process a completion ring. packets are set up in three basic ways:
+ * small packets: should be copied header + data in single buffer.
+ * large packets: header and data in a single buffer.
+ * split packets: header in a separate buffer from data.
+ *                data may be in multiple pages. data may be > 256
+ *                bytes but in a single page.
+ *
+ * NOTE: RX page posting is done in this routine as well. while there's
+ *       the capability of using multiple RX completion rings, it isn't
+ *       really worthwhile due to the fact that the page posting will
+ *       force serialization on the single descriptor ring.
+ */
+static int cas_rx_ringN(struct cas *cp, int ring, int budget)
+{
+	struct cas_rx_comp *rxcs = cp->init_rxcs[ring];
+	int entry, drops;
+	int npackets = 0;
+
+	netif_printk(cp, intr, KERN_DEBUG, cp->dev,
+		     "rx[%d] interrupt, done: %d/%d\n",
+		     ring,
+		     readl(cp->regs + REG_RX_COMP_HEAD), cp->rx_new[ring]);
+
+	entry = cp->rx_new[ring];
+	drops = 0;
+	while (1) {
+		struct cas_rx_comp *rxc = rxcs + entry;
+		struct sk_buff *uninitialized_var(skb);
+		int type, len;
+		u64 words[4];
+		int i, dring;
+
+		words[0] = le64_to_cpu(rxc->word1);
+		words[1] = le64_to_cpu(rxc->word2);
+		words[2] = le64_to_cpu(rxc->word3);
+		words[3] = le64_to_cpu(rxc->word4);
+
+		/* don't touch if still owned by hw */
+		type = CAS_VAL(RX_COMP1_TYPE, words[0]);
+		if (type == 0)
+			break;
+
+		/* hw hasn't cleared the zero bit yet */
+		if (words[3] & RX_COMP4_ZERO) {
+			break;
+		}
+
+		/* get info on the packet */
+		if (words[3] & (RX_COMP4_LEN_MISMATCH | RX_COMP4_BAD)) {
+			spin_lock(&cp->stat_lock[ring]);
+			cp->net_stats[ring].rx_errors++;
+			if (words[3] & RX_COMP4_LEN_MISMATCH)
+				cp->net_stats[ring].rx_length_errors++;
+			if (words[3] & RX_COMP4_BAD)
+				cp->net_stats[ring].rx_crc_errors++;
+			spin_unlock(&cp->stat_lock[ring]);
+
+			/* We'll just return it to Cassini. */
+		drop_it:
+			spin_lock(&cp->stat_lock[ring]);
+			++cp->net_stats[ring].rx_dropped;
+			spin_unlock(&cp->stat_lock[ring]);
+			goto next;
+		}
+
+		len = cas_rx_process_pkt(cp, rxc, entry, words, &skb);
+		if (len < 0) {
+			++drops;
+			goto drop_it;
+		}
+
+		/* see if it's a flow re-assembly or not. the driver
+		 * itself handles release back up.
+		 */
+		if (RX_DONT_BATCH || (type == 0x2)) {
+			/* non-reassm: these always get released */
+			cas_skb_release(skb);
+		} else {
+			cas_rx_flow_pkt(cp, words, skb);
+		}
+
+		spin_lock(&cp->stat_lock[ring]);
+		cp->net_stats[ring].rx_packets++;
+		cp->net_stats[ring].rx_bytes += len;
+		spin_unlock(&cp->stat_lock[ring]);
+
+	next:
+		npackets++;
+
+		/* should it be released? */
+		if (words[0] & RX_COMP1_RELEASE_HDR) {
+			i = CAS_VAL(RX_COMP2_HDR_INDEX, words[1]);
+			dring = CAS_VAL(RX_INDEX_RING, i);
+			i = CAS_VAL(RX_INDEX_NUM, i);
+			cas_post_page(cp, dring, i);
+		}
+
+		if (words[0] & RX_COMP1_RELEASE_DATA) {
+			i = CAS_VAL(RX_COMP1_DATA_INDEX, words[0]);
+			dring = CAS_VAL(RX_INDEX_RING, i);
+			i = CAS_VAL(RX_INDEX_NUM, i);
+			cas_post_page(cp, dring, i);
+		}
+
+		if (words[0] & RX_COMP1_RELEASE_NEXT) {
+			i = CAS_VAL(RX_COMP2_NEXT_INDEX, words[1]);
+			dring = CAS_VAL(RX_INDEX_RING, i);
+			i = CAS_VAL(RX_INDEX_NUM, i);
+			cas_post_page(cp, dring, i);
+		}
+
+		/* skip to the next entry */
+		entry = RX_COMP_ENTRY(ring, entry + 1 +
+				      CAS_VAL(RX_COMP1_SKIP, words[0]));
+#ifdef USE_NAPI
+		if (budget && (npackets >= budget))
+			break;
+#endif
+	}
+	cp->rx_new[ring] = entry;
+
+	if (drops)
+		netdev_info(cp->dev, "Memory squeeze, deferring packet\n");
+	return npackets;
+}
+
+
+/* put completion entries back on the ring */
+static void cas_post_rxcs_ringN(struct net_device *dev,
+				struct cas *cp, int ring)
+{
+	struct cas_rx_comp *rxc = cp->init_rxcs[ring];
+	int last, entry;
+
+	last = cp->rx_cur[ring];
+	entry = cp->rx_new[ring];
+	netif_printk(cp, intr, KERN_DEBUG, dev,
+		     "rxc[%d] interrupt, done: %d/%d\n",
+		     ring, readl(cp->regs + REG_RX_COMP_HEAD), entry);
+
+	/* zero and re-mark descriptors */
+	while (last != entry) {
+		cas_rxc_init(rxc + last);
+		last = RX_COMP_ENTRY(ring, last + 1);
+	}
+	cp->rx_cur[ring] = last;
+
+	if (ring == 0)
+		writel(last, cp->regs + REG_RX_COMP_TAIL);
+	else if (cp->cas_flags & CAS_FLAG_REG_PLUS)
+		writel(last, cp->regs + REG_PLUS_RX_COMPN_TAIL(ring));
+}
+
+
+
+/* cassini can use all four PCI interrupts for the completion ring.
+ * rings 3 and 4 are identical
+ */
+#if defined(USE_PCI_INTC) || defined(USE_PCI_INTD)
+static inline void cas_handle_irqN(struct net_device *dev,
+				   struct cas *cp, const u32 status,
+				   const int ring)
+{
+	if (status & (INTR_RX_COMP_FULL_ALT | INTR_RX_COMP_AF_ALT))
+		cas_post_rxcs_ringN(dev, cp, ring);
+}
+
+static irqreturn_t cas_interruptN(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct cas *cp = netdev_priv(dev);
+	unsigned long flags;
+	int ring = (irq == cp->pci_irq_INTC) ? 2 : 3;
+	u32 status = readl(cp->regs + REG_PLUS_INTRN_STATUS(ring));
+
+	/* check for shared irq */
+	if (status == 0)
+		return IRQ_NONE;
+
+	spin_lock_irqsave(&cp->lock, flags);
+	if (status & INTR_RX_DONE_ALT) { /* handle rx separately */
+#ifdef USE_NAPI
+		cas_mask_intr(cp);
+		napi_schedule(&cp->napi);
+#else
+		cas_rx_ringN(cp, ring, 0);
+#endif
+		status &= ~INTR_RX_DONE_ALT;
+	}
+
+	if (status)
+		cas_handle_irqN(dev, cp, status, ring);
+	spin_unlock_irqrestore(&cp->lock, flags);
+	return IRQ_HANDLED;
+}
+#endif
+
+#ifdef USE_PCI_INTB
+/* everything but rx packets */
+static inline void cas_handle_irq1(struct cas *cp, const u32 status)
+{
+	if (status & INTR_RX_BUF_UNAVAIL_1) {
+		/* Frame arrived, no free RX buffers available.
+		 * NOTE: we can get this on a link transition. */
+		cas_post_rxds_ringN(cp, 1, 0);
+		spin_lock(&cp->stat_lock[1]);
+		cp->net_stats[1].rx_dropped++;
+		spin_unlock(&cp->stat_lock[1]);
+	}
+
+	if (status & INTR_RX_BUF_AE_1)
+		cas_post_rxds_ringN(cp, 1, RX_DESC_RINGN_SIZE(1) -
+				    RX_AE_FREEN_VAL(1));
+
+	if (status & (INTR_RX_COMP_AF | INTR_RX_COMP_FULL))
+		cas_post_rxcs_ringN(cp, 1);
+}
+
+/* ring 2 handles a few more events than 3 and 4 */
+static irqreturn_t cas_interrupt1(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct cas *cp = netdev_priv(dev);
+	unsigned long flags;
+	u32 status = readl(cp->regs + REG_PLUS_INTRN_STATUS(1));
+
+	/* check for shared interrupt */
+	if (status == 0)
+		return IRQ_NONE;
+
+	spin_lock_irqsave(&cp->lock, flags);
+	if (status & INTR_RX_DONE_ALT) { /* handle rx separately */
+#ifdef USE_NAPI
+		cas_mask_intr(cp);
+		napi_schedule(&cp->napi);
+#else
+		cas_rx_ringN(cp, 1, 0);
+#endif
+		status &= ~INTR_RX_DONE_ALT;
+	}
+	if (status)
+		cas_handle_irq1(cp, status);
+	spin_unlock_irqrestore(&cp->lock, flags);
+	return IRQ_HANDLED;
+}
+#endif
+
+static inline void cas_handle_irq(struct net_device *dev,
+				  struct cas *cp, const u32 status)
+{
+	/* housekeeping interrupts */
+	if (status & INTR_ERROR_MASK)
+		cas_abnormal_irq(dev, cp, status);
+
+	if (status & INTR_RX_BUF_UNAVAIL) {
+		/* Frame arrived, no free RX buffers available.
+		 * NOTE: we can get this on a link transition.
+		 */
+		cas_post_rxds_ringN(cp, 0, 0);
+		spin_lock(&cp->stat_lock[0]);
+		cp->net_stats[0].rx_dropped++;
+		spin_unlock(&cp->stat_lock[0]);
+	} else if (status & INTR_RX_BUF_AE) {
+		cas_post_rxds_ringN(cp, 0, RX_DESC_RINGN_SIZE(0) -
+				    RX_AE_FREEN_VAL(0));
+	}
+
+	if (status & (INTR_RX_COMP_AF | INTR_RX_COMP_FULL))
+		cas_post_rxcs_ringN(dev, cp, 0);
+}
+
+static irqreturn_t cas_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct cas *cp = netdev_priv(dev);
+	unsigned long flags;
+	u32 status = readl(cp->regs + REG_INTR_STATUS);
+
+	if (status == 0)
+		return IRQ_NONE;
+
+	spin_lock_irqsave(&cp->lock, flags);
+	if (status & (INTR_TX_ALL | INTR_TX_INTME)) {
+		cas_tx(dev, cp, status);
+		status &= ~(INTR_TX_ALL | INTR_TX_INTME);
+	}
+
+	if (status & INTR_RX_DONE) {
+#ifdef USE_NAPI
+		cas_mask_intr(cp);
+		napi_schedule(&cp->napi);
+#else
+		cas_rx_ringN(cp, 0, 0);
+#endif
+		status &= ~INTR_RX_DONE;
+	}
+
+	if (status)
+		cas_handle_irq(dev, cp, status);
+	spin_unlock_irqrestore(&cp->lock, flags);
+	return IRQ_HANDLED;
+}
+
+
+#ifdef USE_NAPI
+static int cas_poll(struct napi_struct *napi, int budget)
+{
+	struct cas *cp = container_of(napi, struct cas, napi);
+	struct net_device *dev = cp->dev;
+	int i, enable_intr, credits;
+	u32 status = readl(cp->regs + REG_INTR_STATUS);
+	unsigned long flags;
+
+	spin_lock_irqsave(&cp->lock, flags);
+	cas_tx(dev, cp, status);
+	spin_unlock_irqrestore(&cp->lock, flags);
+
+	/* NAPI rx packets. we spread the credits across all of the
+	 * rxc rings
+	 *
+	 * to make sure we're fair with the work we loop through each
+	 * ring N_RX_COMP_RING times with a request of
+	 * budget / N_RX_COMP_RINGS
+	 */
+	enable_intr = 1;
+	credits = 0;
+	for (i = 0; i < N_RX_COMP_RINGS; i++) {
+		int j;
+		for (j = 0; j < N_RX_COMP_RINGS; j++) {
+			credits += cas_rx_ringN(cp, j, budget / N_RX_COMP_RINGS);
+			if (credits >= budget) {
+				enable_intr = 0;
+				goto rx_comp;
+			}
+		}
+	}
+
+rx_comp:
+	/* final rx completion */
+	spin_lock_irqsave(&cp->lock, flags);
+	if (status)
+		cas_handle_irq(dev, cp, status);
+
+#ifdef USE_PCI_INTB
+	if (N_RX_COMP_RINGS > 1) {
+		status = readl(cp->regs + REG_PLUS_INTRN_STATUS(1));
+		if (status)
+			cas_handle_irq1(dev, cp, status);
+	}
+#endif
+
+#ifdef USE_PCI_INTC
+	if (N_RX_COMP_RINGS > 2) {
+		status = readl(cp->regs + REG_PLUS_INTRN_STATUS(2));
+		if (status)
+			cas_handle_irqN(dev, cp, status, 2);
+	}
+#endif
+
+#ifdef USE_PCI_INTD
+	if (N_RX_COMP_RINGS > 3) {
+		status = readl(cp->regs + REG_PLUS_INTRN_STATUS(3));
+		if (status)
+			cas_handle_irqN(dev, cp, status, 3);
+	}
+#endif
+	spin_unlock_irqrestore(&cp->lock, flags);
+	if (enable_intr) {
+		napi_complete(napi);
+		cas_unmask_intr(cp);
+	}
+	return credits;
+}
+#endif
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void cas_netpoll(struct net_device *dev)
+{
+	struct cas *cp = netdev_priv(dev);
+
+	cas_disable_irq(cp, 0);
+	cas_interrupt(cp->pdev->irq, dev);
+	cas_enable_irq(cp, 0);
+
+#ifdef USE_PCI_INTB
+	if (N_RX_COMP_RINGS > 1) {
+		/* cas_interrupt1(); */
+	}
+#endif
+#ifdef USE_PCI_INTC
+	if (N_RX_COMP_RINGS > 2) {
+		/* cas_interruptN(); */
+	}
+#endif
+#ifdef USE_PCI_INTD
+	if (N_RX_COMP_RINGS > 3) {
+		/* cas_interruptN(); */
+	}
+#endif
+}
+#endif
+
+static void cas_tx_timeout(struct net_device *dev)
+{
+	struct cas *cp = netdev_priv(dev);
+
+	netdev_err(dev, "transmit timed out, resetting\n");
+	if (!cp->hw_running) {
+		netdev_err(dev, "hrm.. hw not running!\n");
+		return;
+	}
+
+	netdev_err(dev, "MIF_STATE[%08x]\n",
+		   readl(cp->regs + REG_MIF_STATE_MACHINE));
+
+	netdev_err(dev, "MAC_STATE[%08x]\n",
+		   readl(cp->regs + REG_MAC_STATE_MACHINE));
+
+	netdev_err(dev, "TX_STATE[%08x:%08x:%08x] FIFO[%08x:%08x:%08x] SM1[%08x] SM2[%08x]\n",
+		   readl(cp->regs + REG_TX_CFG),
+		   readl(cp->regs + REG_MAC_TX_STATUS),
+		   readl(cp->regs + REG_MAC_TX_CFG),
+		   readl(cp->regs + REG_TX_FIFO_PKT_CNT),
+		   readl(cp->regs + REG_TX_FIFO_WRITE_PTR),
+		   readl(cp->regs + REG_TX_FIFO_READ_PTR),
+		   readl(cp->regs + REG_TX_SM_1),
+		   readl(cp->regs + REG_TX_SM_2));
+
+	netdev_err(dev, "RX_STATE[%08x:%08x:%08x]\n",
+		   readl(cp->regs + REG_RX_CFG),
+		   readl(cp->regs + REG_MAC_RX_STATUS),
+		   readl(cp->regs + REG_MAC_RX_CFG));
+
+	netdev_err(dev, "HP_STATE[%08x:%08x:%08x:%08x]\n",
+		   readl(cp->regs + REG_HP_STATE_MACHINE),
+		   readl(cp->regs + REG_HP_STATUS0),
+		   readl(cp->regs + REG_HP_STATUS1),
+		   readl(cp->regs + REG_HP_STATUS2));
+
+#if 1
+	atomic_inc(&cp->reset_task_pending);
+	atomic_inc(&cp->reset_task_pending_all);
+	schedule_work(&cp->reset_task);
+#else
+	atomic_set(&cp->reset_task_pending, CAS_RESET_ALL);
+	schedule_work(&cp->reset_task);
+#endif
+}
+
+static inline int cas_intme(int ring, int entry)
+{
+	/* Algorithm: IRQ every 1/2 of descriptors. */
+	if (!(entry & ((TX_DESC_RINGN_SIZE(ring) >> 1) - 1)))
+		return 1;
+	return 0;
+}
+
+
+static void cas_write_txd(struct cas *cp, int ring, int entry,
+			  dma_addr_t mapping, int len, u64 ctrl, int last)
+{
+	struct cas_tx_desc *txd = cp->init_txds[ring] + entry;
+
+	ctrl |= CAS_BASE(TX_DESC_BUFLEN, len);
+	if (cas_intme(ring, entry))
+		ctrl |= TX_DESC_INTME;
+	if (last)
+		ctrl |= TX_DESC_EOF;
+	txd->control = cpu_to_le64(ctrl);
+	txd->buffer = cpu_to_le64(mapping);
+}
+
+static inline void *tx_tiny_buf(struct cas *cp, const int ring,
+				const int entry)
+{
+	return cp->tx_tiny_bufs[ring] + TX_TINY_BUF_LEN*entry;
+}
+
+static inline dma_addr_t tx_tiny_map(struct cas *cp, const int ring,
+				     const int entry, const int tentry)
+{
+	cp->tx_tiny_use[ring][tentry].nbufs++;
+	cp->tx_tiny_use[ring][entry].used = 1;
+	return cp->tx_tiny_dvma[ring] + TX_TINY_BUF_LEN*entry;
+}
+
+static inline int cas_xmit_tx_ringN(struct cas *cp, int ring,
+				    struct sk_buff *skb)
+{
+	struct net_device *dev = cp->dev;
+	int entry, nr_frags, frag, tabort, tentry;
+	dma_addr_t mapping;
+	unsigned long flags;
+	u64 ctrl;
+	u32 len;
+
+	spin_lock_irqsave(&cp->tx_lock[ring], flags);
+
+	/* This is a hard error, log it. */
+	if (TX_BUFFS_AVAIL(cp, ring) <=
+	    CAS_TABORT(cp)*(skb_shinfo(skb)->nr_frags + 1)) {
+		netif_stop_queue(dev);
+		spin_unlock_irqrestore(&cp->tx_lock[ring], flags);
+		netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
+		return 1;
+	}
+
+	ctrl = 0;
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		const u64 csum_start_off = skb_checksum_start_offset(skb);
+		const u64 csum_stuff_off = csum_start_off + skb->csum_offset;
+
+		ctrl =  TX_DESC_CSUM_EN |
+			CAS_BASE(TX_DESC_CSUM_START, csum_start_off) |
+			CAS_BASE(TX_DESC_CSUM_STUFF, csum_stuff_off);
+	}
+
+	entry = cp->tx_new[ring];
+	cp->tx_skbs[ring][entry] = skb;
+
+	nr_frags = skb_shinfo(skb)->nr_frags;
+	len = skb_headlen(skb);
+	mapping = pci_map_page(cp->pdev, virt_to_page(skb->data),
+			       offset_in_page(skb->data), len,
+			       PCI_DMA_TODEVICE);
+
+	tentry = entry;
+	tabort = cas_calc_tabort(cp, (unsigned long) skb->data, len);
+	if (unlikely(tabort)) {
+		/* NOTE: len is always >  tabort */
+		cas_write_txd(cp, ring, entry, mapping, len - tabort,
+			      ctrl | TX_DESC_SOF, 0);
+		entry = TX_DESC_NEXT(ring, entry);
+
+		skb_copy_from_linear_data_offset(skb, len - tabort,
+			      tx_tiny_buf(cp, ring, entry), tabort);
+		mapping = tx_tiny_map(cp, ring, entry, tentry);
+		cas_write_txd(cp, ring, entry, mapping, tabort, ctrl,
+			      (nr_frags == 0));
+	} else {
+		cas_write_txd(cp, ring, entry, mapping, len, ctrl |
+			      TX_DESC_SOF, (nr_frags == 0));
+	}
+	entry = TX_DESC_NEXT(ring, entry);
+
+	for (frag = 0; frag < nr_frags; frag++) {
+		const skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
+
+		len = skb_frag_size(fragp);
+		mapping = skb_frag_dma_map(&cp->pdev->dev, fragp, 0, len,
+					   DMA_TO_DEVICE);
+
+		tabort = cas_calc_tabort(cp, fragp->page_offset, len);
+		if (unlikely(tabort)) {
+			void *addr;
+
+			/* NOTE: len is always > tabort */
+			cas_write_txd(cp, ring, entry, mapping, len - tabort,
+				      ctrl, 0);
+			entry = TX_DESC_NEXT(ring, entry);
+
+			addr = cas_page_map(skb_frag_page(fragp));
+			memcpy(tx_tiny_buf(cp, ring, entry),
+			       addr + fragp->page_offset + len - tabort,
+			       tabort);
+			cas_page_unmap(addr);
+			mapping = tx_tiny_map(cp, ring, entry, tentry);
+			len     = tabort;
+		}
+
+		cas_write_txd(cp, ring, entry, mapping, len, ctrl,
+			      (frag + 1 == nr_frags));
+		entry = TX_DESC_NEXT(ring, entry);
+	}
+
+	cp->tx_new[ring] = entry;
+	if (TX_BUFFS_AVAIL(cp, ring) <= CAS_TABORT(cp)*(MAX_SKB_FRAGS + 1))
+		netif_stop_queue(dev);
+
+	netif_printk(cp, tx_queued, KERN_DEBUG, dev,
+		     "tx[%d] queued, slot %d, skblen %d, avail %d\n",
+		     ring, entry, skb->len, TX_BUFFS_AVAIL(cp, ring));
+	writel(entry, cp->regs + REG_TX_KICKN(ring));
+	spin_unlock_irqrestore(&cp->tx_lock[ring], flags);
+	return 0;
+}
+
+static netdev_tx_t cas_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct cas *cp = netdev_priv(dev);
+
+	/* this is only used as a load-balancing hint, so it doesn't
+	 * need to be SMP safe
+	 */
+	static int ring;
+
+	if (skb_padto(skb, cp->min_frame_size))
+		return NETDEV_TX_OK;
+
+	/* XXX: we need some higher-level QoS hooks to steer packets to
+	 *      individual queues.
+	 */
+	if (cas_xmit_tx_ringN(cp, ring++ & N_TX_RINGS_MASK, skb))
+		return NETDEV_TX_BUSY;
+	return NETDEV_TX_OK;
+}
+
+static void cas_init_tx_dma(struct cas *cp)
+{
+	u64 desc_dma = cp->block_dvma;
+	unsigned long off;
+	u32 val;
+	int i;
+
+	/* set up tx completion writeback registers. must be 8-byte aligned */
+#ifdef USE_TX_COMPWB
+	off = offsetof(struct cas_init_block, tx_compwb);
+	writel((desc_dma + off) >> 32, cp->regs + REG_TX_COMPWB_DB_HI);
+	writel((desc_dma + off) & 0xffffffff, cp->regs + REG_TX_COMPWB_DB_LOW);
+#endif
+
+	/* enable completion writebacks, enable paced mode,
+	 * disable read pipe, and disable pre-interrupt compwbs
+	 */
+	val =   TX_CFG_COMPWB_Q1 | TX_CFG_COMPWB_Q2 |
+		TX_CFG_COMPWB_Q3 | TX_CFG_COMPWB_Q4 |
+		TX_CFG_DMA_RDPIPE_DIS | TX_CFG_PACED_MODE |
+		TX_CFG_INTR_COMPWB_DIS;
+
+	/* write out tx ring info and tx desc bases */
+	for (i = 0; i < MAX_TX_RINGS; i++) {
+		off = (unsigned long) cp->init_txds[i] -
+			(unsigned long) cp->init_block;
+
+		val |= CAS_TX_RINGN_BASE(i);
+		writel((desc_dma + off) >> 32, cp->regs + REG_TX_DBN_HI(i));
+		writel((desc_dma + off) & 0xffffffff, cp->regs +
+		       REG_TX_DBN_LOW(i));
+		/* don't zero out the kick register here as the system
+		 * will wedge
+		 */
+	}
+	writel(val, cp->regs + REG_TX_CFG);
+
+	/* program max burst sizes. these numbers should be different
+	 * if doing QoS.
+	 */
+#ifdef USE_QOS
+	writel(0x800, cp->regs + REG_TX_MAXBURST_0);
+	writel(0x1600, cp->regs + REG_TX_MAXBURST_1);
+	writel(0x2400, cp->regs + REG_TX_MAXBURST_2);
+	writel(0x4800, cp->regs + REG_TX_MAXBURST_3);
+#else
+	writel(0x800, cp->regs + REG_TX_MAXBURST_0);
+	writel(0x800, cp->regs + REG_TX_MAXBURST_1);
+	writel(0x800, cp->regs + REG_TX_MAXBURST_2);
+	writel(0x800, cp->regs + REG_TX_MAXBURST_3);
+#endif
+}
+
+/* Must be invoked under cp->lock. */
+static inline void cas_init_dma(struct cas *cp)
+{
+	cas_init_tx_dma(cp);
+	cas_init_rx_dma(cp);
+}
+
+static void cas_process_mc_list(struct cas *cp)
+{
+	u16 hash_table[16];
+	u32 crc;
+	struct netdev_hw_addr *ha;
+	int i = 1;
+
+	memset(hash_table, 0, sizeof(hash_table));
+	netdev_for_each_mc_addr(ha, cp->dev) {
+		if (i <= CAS_MC_EXACT_MATCH_SIZE) {
+			/* use the alternate mac address registers for the
+			 * first 15 multicast addresses
+			 */
+			writel((ha->addr[4] << 8) | ha->addr[5],
+			       cp->regs + REG_MAC_ADDRN(i*3 + 0));
+			writel((ha->addr[2] << 8) | ha->addr[3],
+			       cp->regs + REG_MAC_ADDRN(i*3 + 1));
+			writel((ha->addr[0] << 8) | ha->addr[1],
+			       cp->regs + REG_MAC_ADDRN(i*3 + 2));
+			i++;
+		}
+		else {
+			/* use hw hash table for the next series of
+			 * multicast addresses
+			 */
+			crc = ether_crc_le(ETH_ALEN, ha->addr);
+			crc >>= 24;
+			hash_table[crc >> 4] |= 1 << (15 - (crc & 0xf));
+		}
+	}
+	for (i = 0; i < 16; i++)
+		writel(hash_table[i], cp->regs + REG_MAC_HASH_TABLEN(i));
+}
+
+/* Must be invoked under cp->lock. */
+static u32 cas_setup_multicast(struct cas *cp)
+{
+	u32 rxcfg = 0;
+	int i;
+
+	if (cp->dev->flags & IFF_PROMISC) {
+		rxcfg |= MAC_RX_CFG_PROMISC_EN;
+
+	} else if (cp->dev->flags & IFF_ALLMULTI) {
+	    	for (i=0; i < 16; i++)
+			writel(0xFFFF, cp->regs + REG_MAC_HASH_TABLEN(i));
+		rxcfg |= MAC_RX_CFG_HASH_FILTER_EN;
+
+	} else {
+		cas_process_mc_list(cp);
+		rxcfg |= MAC_RX_CFG_HASH_FILTER_EN;
+	}
+
+	return rxcfg;
+}
+
+/* must be invoked under cp->stat_lock[N_TX_RINGS] */
+static void cas_clear_mac_err(struct cas *cp)
+{
+	writel(0, cp->regs + REG_MAC_COLL_NORMAL);
+	writel(0, cp->regs + REG_MAC_COLL_FIRST);
+	writel(0, cp->regs + REG_MAC_COLL_EXCESS);
+	writel(0, cp->regs + REG_MAC_COLL_LATE);
+	writel(0, cp->regs + REG_MAC_TIMER_DEFER);
+	writel(0, cp->regs + REG_MAC_ATTEMPTS_PEAK);
+	writel(0, cp->regs + REG_MAC_RECV_FRAME);
+	writel(0, cp->regs + REG_MAC_LEN_ERR);
+	writel(0, cp->regs + REG_MAC_ALIGN_ERR);
+	writel(0, cp->regs + REG_MAC_FCS_ERR);
+	writel(0, cp->regs + REG_MAC_RX_CODE_ERR);
+}
+
+
+static void cas_mac_reset(struct cas *cp)
+{
+	int i;
+
+	/* do both TX and RX reset */
+	writel(0x1, cp->regs + REG_MAC_TX_RESET);
+	writel(0x1, cp->regs + REG_MAC_RX_RESET);
+
+	/* wait for TX */
+	i = STOP_TRIES;
+	while (i-- > 0) {
+		if (readl(cp->regs + REG_MAC_TX_RESET) == 0)
+			break;
+		udelay(10);
+	}
+
+	/* wait for RX */
+	i = STOP_TRIES;
+	while (i-- > 0) {
+		if (readl(cp->regs + REG_MAC_RX_RESET) == 0)
+			break;
+		udelay(10);
+	}
+
+	if (readl(cp->regs + REG_MAC_TX_RESET) |
+	    readl(cp->regs + REG_MAC_RX_RESET))
+		netdev_err(cp->dev, "mac tx[%d]/rx[%d] reset failed [%08x]\n",
+			   readl(cp->regs + REG_MAC_TX_RESET),
+			   readl(cp->regs + REG_MAC_RX_RESET),
+			   readl(cp->regs + REG_MAC_STATE_MACHINE));
+}
+
+
+/* Must be invoked under cp->lock. */
+static void cas_init_mac(struct cas *cp)
+{
+	unsigned char *e = &cp->dev->dev_addr[0];
+	int i;
+	cas_mac_reset(cp);
+
+	/* setup core arbitration weight register */
+	writel(CAWR_RR_DIS, cp->regs + REG_CAWR);
+
+#if !defined(CONFIG_SPARC64) && !defined(CONFIG_ALPHA)
+	/* set the infinite burst register for chips that don't have
+	 * pci issues.
+	 */
+	if ((cp->cas_flags & CAS_FLAG_TARGET_ABORT) == 0)
+		writel(INF_BURST_EN, cp->regs + REG_INF_BURST);
+#endif
+
+	writel(0x1BF0, cp->regs + REG_MAC_SEND_PAUSE);
+
+	writel(0x00, cp->regs + REG_MAC_IPG0);
+	writel(0x08, cp->regs + REG_MAC_IPG1);
+	writel(0x04, cp->regs + REG_MAC_IPG2);
+
+	/* change later for 802.3z */
+	writel(0x40, cp->regs + REG_MAC_SLOT_TIME);
+
+	/* min frame + FCS */
+	writel(ETH_ZLEN + 4, cp->regs + REG_MAC_FRAMESIZE_MIN);
+
+	/* Ethernet payload + header + FCS + optional VLAN tag. NOTE: we
+	 * specify the maximum frame size to prevent RX tag errors on
+	 * oversized frames.
+	 */
+	writel(CAS_BASE(MAC_FRAMESIZE_MAX_BURST, 0x2000) |
+	       CAS_BASE(MAC_FRAMESIZE_MAX_FRAME,
+			(CAS_MAX_MTU + ETH_HLEN + 4 + 4)),
+	       cp->regs + REG_MAC_FRAMESIZE_MAX);
+
+	/* NOTE: crc_size is used as a surrogate for half-duplex.
+	 * workaround saturn half-duplex issue by increasing preamble
+	 * size to 65 bytes.
+	 */
+	if ((cp->cas_flags & CAS_FLAG_SATURN) && cp->crc_size)
+		writel(0x41, cp->regs + REG_MAC_PA_SIZE);
+	else
+		writel(0x07, cp->regs + REG_MAC_PA_SIZE);
+	writel(0x04, cp->regs + REG_MAC_JAM_SIZE);
+	writel(0x10, cp->regs + REG_MAC_ATTEMPT_LIMIT);
+	writel(0x8808, cp->regs + REG_MAC_CTRL_TYPE);
+
+	writel((e[5] | (e[4] << 8)) & 0x3ff, cp->regs + REG_MAC_RANDOM_SEED);
+
+	writel(0, cp->regs + REG_MAC_ADDR_FILTER0);
+	writel(0, cp->regs + REG_MAC_ADDR_FILTER1);
+	writel(0, cp->regs + REG_MAC_ADDR_FILTER2);
+	writel(0, cp->regs + REG_MAC_ADDR_FILTER2_1_MASK);
+	writel(0, cp->regs + REG_MAC_ADDR_FILTER0_MASK);
+
+	/* setup mac address in perfect filter array */
+	for (i = 0; i < 45; i++)
+		writel(0x0, cp->regs + REG_MAC_ADDRN(i));
+
+	writel((e[4] << 8) | e[5], cp->regs + REG_MAC_ADDRN(0));
+	writel((e[2] << 8) | e[3], cp->regs + REG_MAC_ADDRN(1));
+	writel((e[0] << 8) | e[1], cp->regs + REG_MAC_ADDRN(2));
+
+	writel(0x0001, cp->regs + REG_MAC_ADDRN(42));
+	writel(0xc200, cp->regs + REG_MAC_ADDRN(43));
+	writel(0x0180, cp->regs + REG_MAC_ADDRN(44));
+
+	cp->mac_rx_cfg = cas_setup_multicast(cp);
+
+	spin_lock(&cp->stat_lock[N_TX_RINGS]);
+	cas_clear_mac_err(cp);
+	spin_unlock(&cp->stat_lock[N_TX_RINGS]);
+
+	/* Setup MAC interrupts.  We want to get all of the interesting
+	 * counter expiration events, but we do not want to hear about
+	 * normal rx/tx as the DMA engine tells us that.
+	 */
+	writel(MAC_TX_FRAME_XMIT, cp->regs + REG_MAC_TX_MASK);
+	writel(MAC_RX_FRAME_RECV, cp->regs + REG_MAC_RX_MASK);
+
+	/* Don't enable even the PAUSE interrupts for now, we
+	 * make no use of those events other than to record them.
+	 */
+	writel(0xffffffff, cp->regs + REG_MAC_CTRL_MASK);
+}
+
+/* Must be invoked under cp->lock. */
+static void cas_init_pause_thresholds(struct cas *cp)
+{
+	/* Calculate pause thresholds.  Setting the OFF threshold to the
+	 * full RX fifo size effectively disables PAUSE generation
+	 */
+	if (cp->rx_fifo_size <= (2 * 1024)) {
+		cp->rx_pause_off = cp->rx_pause_on = cp->rx_fifo_size;
+	} else {
+		int max_frame = (cp->dev->mtu + ETH_HLEN + 4 + 4 + 64) & ~63;
+		if (max_frame * 3 > cp->rx_fifo_size) {
+			cp->rx_pause_off = 7104;
+			cp->rx_pause_on  = 960;
+		} else {
+			int off = (cp->rx_fifo_size - (max_frame * 2));
+			int on = off - max_frame;
+			cp->rx_pause_off = off;
+			cp->rx_pause_on = on;
+		}
+	}
+}
+
+static int cas_vpd_match(const void __iomem *p, const char *str)
+{
+	int len = strlen(str) + 1;
+	int i;
+
+	for (i = 0; i < len; i++) {
+		if (readb(p + i) != str[i])
+			return 0;
+	}
+	return 1;
+}
+
+
+/* get the mac address by reading the vpd information in the rom.
+ * also get the phy type and determine if there's an entropy generator.
+ * NOTE: this is a bit convoluted for the following reasons:
+ *  1) vpd info has order-dependent mac addresses for multinic cards
+ *  2) the only way to determine the nic order is to use the slot
+ *     number.
+ *  3) fiber cards don't have bridges, so their slot numbers don't
+ *     mean anything.
+ *  4) we don't actually know we have a fiber card until after
+ *     the mac addresses are parsed.
+ */
+static int cas_get_vpd_info(struct cas *cp, unsigned char *dev_addr,
+			    const int offset)
+{
+	void __iomem *p = cp->regs + REG_EXPANSION_ROM_RUN_START;
+	void __iomem *base, *kstart;
+	int i, len;
+	int found = 0;
+#define VPD_FOUND_MAC        0x01
+#define VPD_FOUND_PHY        0x02
+
+	int phy_type = CAS_PHY_MII_MDIO0; /* default phy type */
+	int mac_off  = 0;
+
+#if defined(CONFIG_SPARC)
+	const unsigned char *addr;
+#endif
+
+	/* give us access to the PROM */
+	writel(BIM_LOCAL_DEV_PROM | BIM_LOCAL_DEV_PAD,
+	       cp->regs + REG_BIM_LOCAL_DEV_EN);
+
+	/* check for an expansion rom */
+	if (readb(p) != 0x55 || readb(p + 1) != 0xaa)
+		goto use_random_mac_addr;
+
+	/* search for beginning of vpd */
+	base = NULL;
+	for (i = 2; i < EXPANSION_ROM_SIZE; i++) {
+		/* check for PCIR */
+		if ((readb(p + i + 0) == 0x50) &&
+		    (readb(p + i + 1) == 0x43) &&
+		    (readb(p + i + 2) == 0x49) &&
+		    (readb(p + i + 3) == 0x52)) {
+			base = p + (readb(p + i + 8) |
+				    (readb(p + i + 9) << 8));
+			break;
+		}
+	}
+
+	if (!base || (readb(base) != 0x82))
+		goto use_random_mac_addr;
+
+	i = (readb(base + 1) | (readb(base + 2) << 8)) + 3;
+	while (i < EXPANSION_ROM_SIZE) {
+		if (readb(base + i) != 0x90) /* no vpd found */
+			goto use_random_mac_addr;
+
+		/* found a vpd field */
+		len = readb(base + i + 1) | (readb(base + i + 2) << 8);
+
+		/* extract keywords */
+		kstart = base + i + 3;
+		p = kstart;
+		while ((p - kstart) < len) {
+			int klen = readb(p + 2);
+			int j;
+			char type;
+
+			p += 3;
+
+			/* look for the following things:
+			 * -- correct length == 29
+			 * 3 (type) + 2 (size) +
+			 * 18 (strlen("local-mac-address") + 1) +
+			 * 6 (mac addr)
+			 * -- VPD Instance 'I'
+			 * -- VPD Type Bytes 'B'
+			 * -- VPD data length == 6
+			 * -- property string == local-mac-address
+			 *
+			 * -- correct length == 24
+			 * 3 (type) + 2 (size) +
+			 * 12 (strlen("entropy-dev") + 1) +
+			 * 7 (strlen("vms110") + 1)
+			 * -- VPD Instance 'I'
+			 * -- VPD Type String 'B'
+			 * -- VPD data length == 7
+			 * -- property string == entropy-dev
+			 *
+			 * -- correct length == 18
+			 * 3 (type) + 2 (size) +
+			 * 9 (strlen("phy-type") + 1) +
+			 * 4 (strlen("pcs") + 1)
+			 * -- VPD Instance 'I'
+			 * -- VPD Type String 'S'
+			 * -- VPD data length == 4
+			 * -- property string == phy-type
+			 *
+			 * -- correct length == 23
+			 * 3 (type) + 2 (size) +
+			 * 14 (strlen("phy-interface") + 1) +
+			 * 4 (strlen("pcs") + 1)
+			 * -- VPD Instance 'I'
+			 * -- VPD Type String 'S'
+			 * -- VPD data length == 4
+			 * -- property string == phy-interface
+			 */
+			if (readb(p) != 'I')
+				goto next;
+
+			/* finally, check string and length */
+			type = readb(p + 3);
+			if (type == 'B') {
+				if ((klen == 29) && readb(p + 4) == 6 &&
+				    cas_vpd_match(p + 5,
+						  "local-mac-address")) {
+					if (mac_off++ > offset)
+						goto next;
+
+					/* set mac address */
+					for (j = 0; j < 6; j++)
+						dev_addr[j] =
+							readb(p + 23 + j);
+					goto found_mac;
+				}
+			}
+
+			if (type != 'S')
+				goto next;
+
+#ifdef USE_ENTROPY_DEV
+			if ((klen == 24) &&
+			    cas_vpd_match(p + 5, "entropy-dev") &&
+			    cas_vpd_match(p + 17, "vms110")) {
+				cp->cas_flags |= CAS_FLAG_ENTROPY_DEV;
+				goto next;
+			}
+#endif
+
+			if (found & VPD_FOUND_PHY)
+				goto next;
+
+			if ((klen == 18) && readb(p + 4) == 4 &&
+			    cas_vpd_match(p + 5, "phy-type")) {
+				if (cas_vpd_match(p + 14, "pcs")) {
+					phy_type = CAS_PHY_SERDES;
+					goto found_phy;
+				}
+			}
+
+			if ((klen == 23) && readb(p + 4) == 4 &&
+			    cas_vpd_match(p + 5, "phy-interface")) {
+				if (cas_vpd_match(p + 19, "pcs")) {
+					phy_type = CAS_PHY_SERDES;
+					goto found_phy;
+				}
+			}
+found_mac:
+			found |= VPD_FOUND_MAC;
+			goto next;
+
+found_phy:
+			found |= VPD_FOUND_PHY;
+
+next:
+			p += klen;
+		}
+		i += len + 3;
+	}
+
+use_random_mac_addr:
+	if (found & VPD_FOUND_MAC)
+		goto done;
+
+#if defined(CONFIG_SPARC)
+	addr = of_get_property(cp->of_node, "local-mac-address", NULL);
+	if (addr != NULL) {
+		memcpy(dev_addr, addr, ETH_ALEN);
+		goto done;
+	}
+#endif
+
+	/* Sun MAC prefix then 3 random bytes. */
+	pr_info("MAC address not found in ROM VPD\n");
+	dev_addr[0] = 0x08;
+	dev_addr[1] = 0x00;
+	dev_addr[2] = 0x20;
+	get_random_bytes(dev_addr + 3, 3);
+
+done:
+	writel(0, cp->regs + REG_BIM_LOCAL_DEV_EN);
+	return phy_type;
+}
+
+/* check pci invariants */
+static void cas_check_pci_invariants(struct cas *cp)
+{
+	struct pci_dev *pdev = cp->pdev;
+
+	cp->cas_flags = 0;
+	if ((pdev->vendor == PCI_VENDOR_ID_SUN) &&
+	    (pdev->device == PCI_DEVICE_ID_SUN_CASSINI)) {
+		if (pdev->revision >= CAS_ID_REVPLUS)
+			cp->cas_flags |= CAS_FLAG_REG_PLUS;
+		if (pdev->revision < CAS_ID_REVPLUS02u)
+			cp->cas_flags |= CAS_FLAG_TARGET_ABORT;
+
+		/* Original Cassini supports HW CSUM, but it's not
+		 * enabled by default as it can trigger TX hangs.
+		 */
+		if (pdev->revision < CAS_ID_REV2)
+			cp->cas_flags |= CAS_FLAG_NO_HW_CSUM;
+	} else {
+		/* Only sun has original cassini chips.  */
+		cp->cas_flags |= CAS_FLAG_REG_PLUS;
+
+		/* We use a flag because the same phy might be externally
+		 * connected.
+		 */
+		if ((pdev->vendor == PCI_VENDOR_ID_NS) &&
+		    (pdev->device == PCI_DEVICE_ID_NS_SATURN))
+			cp->cas_flags |= CAS_FLAG_SATURN;
+	}
+}
+
+
+static int cas_check_invariants(struct cas *cp)
+{
+	struct pci_dev *pdev = cp->pdev;
+	u32 cfg;
+	int i;
+
+	/* get page size for rx buffers. */
+	cp->page_order = 0;
+#ifdef USE_PAGE_ORDER
+	if (PAGE_SHIFT < CAS_JUMBO_PAGE_SHIFT) {
+		/* see if we can allocate larger pages */
+		struct page *page = alloc_pages(GFP_ATOMIC,
+						CAS_JUMBO_PAGE_SHIFT -
+						PAGE_SHIFT);
+		if (page) {
+			__free_pages(page, CAS_JUMBO_PAGE_SHIFT - PAGE_SHIFT);
+			cp->page_order = CAS_JUMBO_PAGE_SHIFT - PAGE_SHIFT;
+		} else {
+			printk("MTU limited to %d bytes\n", CAS_MAX_MTU);
+		}
+	}
+#endif
+	cp->page_size = (PAGE_SIZE << cp->page_order);
+
+	/* Fetch the FIFO configurations. */
+	cp->tx_fifo_size = readl(cp->regs + REG_TX_FIFO_SIZE) * 64;
+	cp->rx_fifo_size = RX_FIFO_SIZE;
+
+	/* finish phy determination. MDIO1 takes precedence over MDIO0 if
+	 * they're both connected.
+	 */
+	cp->phy_type = cas_get_vpd_info(cp, cp->dev->dev_addr,
+					PCI_SLOT(pdev->devfn));
+	if (cp->phy_type & CAS_PHY_SERDES) {
+		cp->cas_flags |= CAS_FLAG_1000MB_CAP;
+		return 0; /* no more checking needed */
+	}
+
+	/* MII */
+	cfg = readl(cp->regs + REG_MIF_CFG);
+	if (cfg & MIF_CFG_MDIO_1) {
+		cp->phy_type = CAS_PHY_MII_MDIO1;
+	} else if (cfg & MIF_CFG_MDIO_0) {
+		cp->phy_type = CAS_PHY_MII_MDIO0;
+	}
+
+	cas_mif_poll(cp, 0);
+	writel(PCS_DATAPATH_MODE_MII, cp->regs + REG_PCS_DATAPATH_MODE);
+
+	for (i = 0; i < 32; i++) {
+		u32 phy_id;
+		int j;
+
+		for (j = 0; j < 3; j++) {
+			cp->phy_addr = i;
+			phy_id = cas_phy_read(cp, MII_PHYSID1) << 16;
+			phy_id |= cas_phy_read(cp, MII_PHYSID2);
+			if (phy_id && (phy_id != 0xFFFFFFFF)) {
+				cp->phy_id = phy_id;
+				goto done;
+			}
+		}
+	}
+	pr_err("MII phy did not respond [%08x]\n",
+	       readl(cp->regs + REG_MIF_STATE_MACHINE));
+	return -1;
+
+done:
+	/* see if we can do gigabit */
+	cfg = cas_phy_read(cp, MII_BMSR);
+	if ((cfg & CAS_BMSR_1000_EXTEND) &&
+	    cas_phy_read(cp, CAS_MII_1000_EXTEND))
+		cp->cas_flags |= CAS_FLAG_1000MB_CAP;
+	return 0;
+}
+
+/* Must be invoked under cp->lock. */
+static inline void cas_start_dma(struct cas *cp)
+{
+	int i;
+	u32 val;
+	int txfailed = 0;
+
+	/* enable dma */
+	val = readl(cp->regs + REG_TX_CFG) | TX_CFG_DMA_EN;
+	writel(val, cp->regs + REG_TX_CFG);
+	val = readl(cp->regs + REG_RX_CFG) | RX_CFG_DMA_EN;
+	writel(val, cp->regs + REG_RX_CFG);
+
+	/* enable the mac */
+	val = readl(cp->regs + REG_MAC_TX_CFG) | MAC_TX_CFG_EN;
+	writel(val, cp->regs + REG_MAC_TX_CFG);
+	val = readl(cp->regs + REG_MAC_RX_CFG) | MAC_RX_CFG_EN;
+	writel(val, cp->regs + REG_MAC_RX_CFG);
+
+	i = STOP_TRIES;
+	while (i-- > 0) {
+		val = readl(cp->regs + REG_MAC_TX_CFG);
+		if ((val & MAC_TX_CFG_EN))
+			break;
+		udelay(10);
+	}
+	if (i < 0) txfailed = 1;
+	i = STOP_TRIES;
+	while (i-- > 0) {
+		val = readl(cp->regs + REG_MAC_RX_CFG);
+		if ((val & MAC_RX_CFG_EN)) {
+			if (txfailed) {
+				netdev_err(cp->dev,
+					   "enabling mac failed [tx:%08x:%08x]\n",
+					   readl(cp->regs + REG_MIF_STATE_MACHINE),
+					   readl(cp->regs + REG_MAC_STATE_MACHINE));
+			}
+			goto enable_rx_done;
+		}
+		udelay(10);
+	}
+	netdev_err(cp->dev, "enabling mac failed [%s:%08x:%08x]\n",
+		   (txfailed ? "tx,rx" : "rx"),
+		   readl(cp->regs + REG_MIF_STATE_MACHINE),
+		   readl(cp->regs + REG_MAC_STATE_MACHINE));
+
+enable_rx_done:
+	cas_unmask_intr(cp); /* enable interrupts */
+	writel(RX_DESC_RINGN_SIZE(0) - 4, cp->regs + REG_RX_KICK);
+	writel(0, cp->regs + REG_RX_COMP_TAIL);
+
+	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
+		if (N_RX_DESC_RINGS > 1)
+			writel(RX_DESC_RINGN_SIZE(1) - 4,
+			       cp->regs + REG_PLUS_RX_KICK1);
+
+		for (i = 1; i < N_RX_COMP_RINGS; i++)
+			writel(0, cp->regs + REG_PLUS_RX_COMPN_TAIL(i));
+	}
+}
+
+/* Must be invoked under cp->lock. */
+static void cas_read_pcs_link_mode(struct cas *cp, int *fd, int *spd,
+				   int *pause)
+{
+	u32 val = readl(cp->regs + REG_PCS_MII_LPA);
+	*fd     = (val & PCS_MII_LPA_FD) ? 1 : 0;
+	*pause  = (val & PCS_MII_LPA_SYM_PAUSE) ? 0x01 : 0x00;
+	if (val & PCS_MII_LPA_ASYM_PAUSE)
+		*pause |= 0x10;
+	*spd = 1000;
+}
+
+/* Must be invoked under cp->lock. */
+static void cas_read_mii_link_mode(struct cas *cp, int *fd, int *spd,
+				   int *pause)
+{
+	u32 val;
+
+	*fd = 0;
+	*spd = 10;
+	*pause = 0;
+
+	/* use GMII registers */
+	val = cas_phy_read(cp, MII_LPA);
+	if (val & CAS_LPA_PAUSE)
+		*pause = 0x01;
+
+	if (val & CAS_LPA_ASYM_PAUSE)
+		*pause |= 0x10;
+
+	if (val & LPA_DUPLEX)
+		*fd = 1;
+	if (val & LPA_100)
+		*spd = 100;
+
+	if (cp->cas_flags & CAS_FLAG_1000MB_CAP) {
+		val = cas_phy_read(cp, CAS_MII_1000_STATUS);
+		if (val & (CAS_LPA_1000FULL | CAS_LPA_1000HALF))
+			*spd = 1000;
+		if (val & CAS_LPA_1000FULL)
+			*fd = 1;
+	}
+}
+
+/* A link-up condition has occurred, initialize and enable the
+ * rest of the chip.
+ *
+ * Must be invoked under cp->lock.
+ */
+static void cas_set_link_modes(struct cas *cp)
+{
+	u32 val;
+	int full_duplex, speed, pause;
+
+	full_duplex = 0;
+	speed = 10;
+	pause = 0;
+
+	if (CAS_PHY_MII(cp->phy_type)) {
+		cas_mif_poll(cp, 0);
+		val = cas_phy_read(cp, MII_BMCR);
+		if (val & BMCR_ANENABLE) {
+			cas_read_mii_link_mode(cp, &full_duplex, &speed,
+					       &pause);
+		} else {
+			if (val & BMCR_FULLDPLX)
+				full_duplex = 1;
+
+			if (val & BMCR_SPEED100)
+				speed = 100;
+			else if (val & CAS_BMCR_SPEED1000)
+				speed = (cp->cas_flags & CAS_FLAG_1000MB_CAP) ?
+					1000 : 100;
+		}
+		cas_mif_poll(cp, 1);
+
+	} else {
+		val = readl(cp->regs + REG_PCS_MII_CTRL);
+		cas_read_pcs_link_mode(cp, &full_duplex, &speed, &pause);
+		if ((val & PCS_MII_AUTONEG_EN) == 0) {
+			if (val & PCS_MII_CTRL_DUPLEX)
+				full_duplex = 1;
+		}
+	}
+
+	netif_info(cp, link, cp->dev, "Link up at %d Mbps, %s-duplex\n",
+		   speed, full_duplex ? "full" : "half");
+
+	val = MAC_XIF_TX_MII_OUTPUT_EN | MAC_XIF_LINK_LED;
+	if (CAS_PHY_MII(cp->phy_type)) {
+		val |= MAC_XIF_MII_BUFFER_OUTPUT_EN;
+		if (!full_duplex)
+			val |= MAC_XIF_DISABLE_ECHO;
+	}
+	if (full_duplex)
+		val |= MAC_XIF_FDPLX_LED;
+	if (speed == 1000)
+		val |= MAC_XIF_GMII_MODE;
+	writel(val, cp->regs + REG_MAC_XIF_CFG);
+
+	/* deal with carrier and collision detect. */
+	val = MAC_TX_CFG_IPG_EN;
+	if (full_duplex) {
+		val |= MAC_TX_CFG_IGNORE_CARRIER;
+		val |= MAC_TX_CFG_IGNORE_COLL;
+	} else {
+#ifndef USE_CSMA_CD_PROTO
+		val |= MAC_TX_CFG_NEVER_GIVE_UP_EN;
+		val |= MAC_TX_CFG_NEVER_GIVE_UP_LIM;
+#endif
+	}
+	/* val now set up for REG_MAC_TX_CFG */
+
+	/* If gigabit and half-duplex, enable carrier extension
+	 * mode.  increase slot time to 512 bytes as well.
+	 * else, disable it and make sure slot time is 64 bytes.
+	 * also activate checksum bug workaround
+	 */
+	if ((speed == 1000) && !full_duplex) {
+		writel(val | MAC_TX_CFG_CARRIER_EXTEND,
+		       cp->regs + REG_MAC_TX_CFG);
+
+		val = readl(cp->regs + REG_MAC_RX_CFG);
+		val &= ~MAC_RX_CFG_STRIP_FCS; /* checksum workaround */
+		writel(val | MAC_RX_CFG_CARRIER_EXTEND,
+		       cp->regs + REG_MAC_RX_CFG);
+
+		writel(0x200, cp->regs + REG_MAC_SLOT_TIME);
+
+		cp->crc_size = 4;
+		/* minimum size gigabit frame at half duplex */
+		cp->min_frame_size = CAS_1000MB_MIN_FRAME;
+
+	} else {
+		writel(val, cp->regs + REG_MAC_TX_CFG);
+
+		/* checksum bug workaround. don't strip FCS when in
+		 * half-duplex mode
+		 */
+		val = readl(cp->regs + REG_MAC_RX_CFG);
+		if (full_duplex) {
+			val |= MAC_RX_CFG_STRIP_FCS;
+			cp->crc_size = 0;
+			cp->min_frame_size = CAS_MIN_MTU;
+		} else {
+			val &= ~MAC_RX_CFG_STRIP_FCS;
+			cp->crc_size = 4;
+			cp->min_frame_size = CAS_MIN_FRAME;
+		}
+		writel(val & ~MAC_RX_CFG_CARRIER_EXTEND,
+		       cp->regs + REG_MAC_RX_CFG);
+		writel(0x40, cp->regs + REG_MAC_SLOT_TIME);
+	}
+
+	if (netif_msg_link(cp)) {
+		if (pause & 0x01) {
+			netdev_info(cp->dev, "Pause is enabled (rxfifo: %d off: %d on: %d)\n",
+				    cp->rx_fifo_size,
+				    cp->rx_pause_off,
+				    cp->rx_pause_on);
+		} else if (pause & 0x10) {
+			netdev_info(cp->dev, "TX pause enabled\n");
+		} else {
+			netdev_info(cp->dev, "Pause is disabled\n");
+		}
+	}
+
+	val = readl(cp->regs + REG_MAC_CTRL_CFG);
+	val &= ~(MAC_CTRL_CFG_SEND_PAUSE_EN | MAC_CTRL_CFG_RECV_PAUSE_EN);
+	if (pause) { /* symmetric or asymmetric pause */
+		val |= MAC_CTRL_CFG_SEND_PAUSE_EN;
+		if (pause & 0x01) { /* symmetric pause */
+			val |= MAC_CTRL_CFG_RECV_PAUSE_EN;
+		}
+	}
+	writel(val, cp->regs + REG_MAC_CTRL_CFG);
+	cas_start_dma(cp);
+}
+
+/* Must be invoked under cp->lock. */
+static void cas_init_hw(struct cas *cp, int restart_link)
+{
+	if (restart_link)
+		cas_phy_init(cp);
+
+	cas_init_pause_thresholds(cp);
+	cas_init_mac(cp);
+	cas_init_dma(cp);
+
+	if (restart_link) {
+		/* Default aneg parameters */
+		cp->timer_ticks = 0;
+		cas_begin_auto_negotiation(cp, NULL);
+	} else if (cp->lstate == link_up) {
+		cas_set_link_modes(cp);
+		netif_carrier_on(cp->dev);
+	}
+}
+
+/* Must be invoked under cp->lock. on earlier cassini boards,
+ * SOFT_0 is tied to PCI reset. we use this to force a pci reset,
+ * let it settle out, and then restore pci state.
+ */
+static void cas_hard_reset(struct cas *cp)
+{
+	writel(BIM_LOCAL_DEV_SOFT_0, cp->regs + REG_BIM_LOCAL_DEV_EN);
+	udelay(20);
+	pci_restore_state(cp->pdev);
+}
+
+
+static void cas_global_reset(struct cas *cp, int blkflag)
+{
+	int limit;
+
+	/* issue a global reset. don't use RSTOUT. */
+	if (blkflag && !CAS_PHY_MII(cp->phy_type)) {
+		/* For PCS, when the blkflag is set, we should set the
+		 * SW_REST_BLOCK_PCS_SLINK bit to prevent the results of
+		 * the last autonegotiation from being cleared.  We'll
+		 * need some special handling if the chip is set into a
+		 * loopback mode.
+		 */
+		writel((SW_RESET_TX | SW_RESET_RX | SW_RESET_BLOCK_PCS_SLINK),
+		       cp->regs + REG_SW_RESET);
+	} else {
+		writel(SW_RESET_TX | SW_RESET_RX, cp->regs + REG_SW_RESET);
+	}
+
+	/* need to wait at least 3ms before polling register */
+	mdelay(3);
+
+	limit = STOP_TRIES;
+	while (limit-- > 0) {
+		u32 val = readl(cp->regs + REG_SW_RESET);
+		if ((val & (SW_RESET_TX | SW_RESET_RX)) == 0)
+			goto done;
+		udelay(10);
+	}
+	netdev_err(cp->dev, "sw reset failed\n");
+
+done:
+	/* enable various BIM interrupts */
+	writel(BIM_CFG_DPAR_INTR_ENABLE | BIM_CFG_RMA_INTR_ENABLE |
+	       BIM_CFG_RTA_INTR_ENABLE, cp->regs + REG_BIM_CFG);
+
+	/* clear out pci error status mask for handled errors.
+	 * we don't deal with DMA counter overflows as they happen
+	 * all the time.
+	 */
+	writel(0xFFFFFFFFU & ~(PCI_ERR_BADACK | PCI_ERR_DTRTO |
+			       PCI_ERR_OTHER | PCI_ERR_BIM_DMA_WRITE |
+			       PCI_ERR_BIM_DMA_READ), cp->regs +
+	       REG_PCI_ERR_STATUS_MASK);
+
+	/* set up for MII by default to address mac rx reset timeout
+	 * issue
+	 */
+	writel(PCS_DATAPATH_MODE_MII, cp->regs + REG_PCS_DATAPATH_MODE);
+}
+
+static void cas_reset(struct cas *cp, int blkflag)
+{
+	u32 val;
+
+	cas_mask_intr(cp);
+	cas_global_reset(cp, blkflag);
+	cas_mac_reset(cp);
+	cas_entropy_reset(cp);
+
+	/* disable dma engines. */
+	val = readl(cp->regs + REG_TX_CFG);
+	val &= ~TX_CFG_DMA_EN;
+	writel(val, cp->regs + REG_TX_CFG);
+
+	val = readl(cp->regs + REG_RX_CFG);
+	val &= ~RX_CFG_DMA_EN;
+	writel(val, cp->regs + REG_RX_CFG);
+
+	/* program header parser */
+	if ((cp->cas_flags & CAS_FLAG_TARGET_ABORT) ||
+	    (CAS_HP_ALT_FIRMWARE == cas_prog_null)) {
+		cas_load_firmware(cp, CAS_HP_FIRMWARE);
+	} else {
+		cas_load_firmware(cp, CAS_HP_ALT_FIRMWARE);
+	}
+
+	/* clear out error registers */
+	spin_lock(&cp->stat_lock[N_TX_RINGS]);
+	cas_clear_mac_err(cp);
+	spin_unlock(&cp->stat_lock[N_TX_RINGS]);
+}
+
+/* Shut down the chip, must be called with pm_mutex held.  */
+static void cas_shutdown(struct cas *cp)
+{
+	unsigned long flags;
+
+	/* Make us not-running to avoid timers respawning */
+	cp->hw_running = 0;
+
+	del_timer_sync(&cp->link_timer);
+
+	/* Stop the reset task */
+#if 0
+	while (atomic_read(&cp->reset_task_pending_mtu) ||
+	       atomic_read(&cp->reset_task_pending_spare) ||
+	       atomic_read(&cp->reset_task_pending_all))
+		schedule();
+
+#else
+	while (atomic_read(&cp->reset_task_pending))
+		schedule();
+#endif
+	/* Actually stop the chip */
+	cas_lock_all_save(cp, flags);
+	cas_reset(cp, 0);
+	if (cp->cas_flags & CAS_FLAG_SATURN)
+		cas_phy_powerdown(cp);
+	cas_unlock_all_restore(cp, flags);
+}
+
+static int cas_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct cas *cp = netdev_priv(dev);
+
+	dev->mtu = new_mtu;
+	if (!netif_running(dev) || !netif_device_present(dev))
+		return 0;
+
+	/* let the reset task handle it */
+#if 1
+	atomic_inc(&cp->reset_task_pending);
+	if ((cp->phy_type & CAS_PHY_SERDES)) {
+		atomic_inc(&cp->reset_task_pending_all);
+	} else {
+		atomic_inc(&cp->reset_task_pending_mtu);
+	}
+	schedule_work(&cp->reset_task);
+#else
+	atomic_set(&cp->reset_task_pending, (cp->phy_type & CAS_PHY_SERDES) ?
+		   CAS_RESET_ALL : CAS_RESET_MTU);
+	pr_err("reset called in cas_change_mtu\n");
+	schedule_work(&cp->reset_task);
+#endif
+
+	flush_work(&cp->reset_task);
+	return 0;
+}
+
+static void cas_clean_txd(struct cas *cp, int ring)
+{
+	struct cas_tx_desc *txd = cp->init_txds[ring];
+	struct sk_buff *skb, **skbs = cp->tx_skbs[ring];
+	u64 daddr, dlen;
+	int i, size;
+
+	size = TX_DESC_RINGN_SIZE(ring);
+	for (i = 0; i < size; i++) {
+		int frag;
+
+		if (skbs[i] == NULL)
+			continue;
+
+		skb = skbs[i];
+		skbs[i] = NULL;
+
+		for (frag = 0; frag <= skb_shinfo(skb)->nr_frags;  frag++) {
+			int ent = i & (size - 1);
+
+			/* first buffer is never a tiny buffer and so
+			 * needs to be unmapped.
+			 */
+			daddr = le64_to_cpu(txd[ent].buffer);
+			dlen  =  CAS_VAL(TX_DESC_BUFLEN,
+					 le64_to_cpu(txd[ent].control));
+			pci_unmap_page(cp->pdev, daddr, dlen,
+				       PCI_DMA_TODEVICE);
+
+			if (frag != skb_shinfo(skb)->nr_frags) {
+				i++;
+
+				/* next buffer might by a tiny buffer.
+				 * skip past it.
+				 */
+				ent = i & (size - 1);
+				if (cp->tx_tiny_use[ring][ent].used)
+					i++;
+			}
+		}
+		dev_kfree_skb_any(skb);
+	}
+
+	/* zero out tiny buf usage */
+	memset(cp->tx_tiny_use[ring], 0, size*sizeof(*cp->tx_tiny_use[ring]));
+}
+
+/* freed on close */
+static inline void cas_free_rx_desc(struct cas *cp, int ring)
+{
+	cas_page_t **page = cp->rx_pages[ring];
+	int i, size;
+
+	size = RX_DESC_RINGN_SIZE(ring);
+	for (i = 0; i < size; i++) {
+		if (page[i]) {
+			cas_page_free(cp, page[i]);
+			page[i] = NULL;
+		}
+	}
+}
+
+static void cas_free_rxds(struct cas *cp)
+{
+	int i;
+
+	for (i = 0; i < N_RX_DESC_RINGS; i++)
+		cas_free_rx_desc(cp, i);
+}
+
+/* Must be invoked under cp->lock. */
+static void cas_clean_rings(struct cas *cp)
+{
+	int i;
+
+	/* need to clean all tx rings */
+	memset(cp->tx_old, 0, sizeof(*cp->tx_old)*N_TX_RINGS);
+	memset(cp->tx_new, 0, sizeof(*cp->tx_new)*N_TX_RINGS);
+	for (i = 0; i < N_TX_RINGS; i++)
+		cas_clean_txd(cp, i);
+
+	/* zero out init block */
+	memset(cp->init_block, 0, sizeof(struct cas_init_block));
+	cas_clean_rxds(cp);
+	cas_clean_rxcs(cp);
+}
+
+/* allocated on open */
+static inline int cas_alloc_rx_desc(struct cas *cp, int ring)
+{
+	cas_page_t **page = cp->rx_pages[ring];
+	int size, i = 0;
+
+	size = RX_DESC_RINGN_SIZE(ring);
+	for (i = 0; i < size; i++) {
+		if ((page[i] = cas_page_alloc(cp, GFP_KERNEL)) == NULL)
+			return -1;
+	}
+	return 0;
+}
+
+static int cas_alloc_rxds(struct cas *cp)
+{
+	int i;
+
+	for (i = 0; i < N_RX_DESC_RINGS; i++) {
+		if (cas_alloc_rx_desc(cp, i) < 0) {
+			cas_free_rxds(cp);
+			return -1;
+		}
+	}
+	return 0;
+}
+
+static void cas_reset_task(struct work_struct *work)
+{
+	struct cas *cp = container_of(work, struct cas, reset_task);
+#if 0
+	int pending = atomic_read(&cp->reset_task_pending);
+#else
+	int pending_all = atomic_read(&cp->reset_task_pending_all);
+	int pending_spare = atomic_read(&cp->reset_task_pending_spare);
+	int pending_mtu = atomic_read(&cp->reset_task_pending_mtu);
+
+	if (pending_all == 0 && pending_spare == 0 && pending_mtu == 0) {
+		/* We can have more tasks scheduled than actually
+		 * needed.
+		 */
+		atomic_dec(&cp->reset_task_pending);
+		return;
+	}
+#endif
+	/* The link went down, we reset the ring, but keep
+	 * DMA stopped. Use this function for reset
+	 * on error as well.
+	 */
+	if (cp->hw_running) {
+		unsigned long flags;
+
+		/* Make sure we don't get interrupts or tx packets */
+		netif_device_detach(cp->dev);
+		cas_lock_all_save(cp, flags);
+
+		if (cp->opened) {
+			/* We call cas_spare_recover when we call cas_open.
+			 * but we do not initialize the lists cas_spare_recover
+			 * uses until cas_open is called.
+			 */
+			cas_spare_recover(cp, GFP_ATOMIC);
+		}
+#if 1
+		/* test => only pending_spare set */
+		if (!pending_all && !pending_mtu)
+			goto done;
+#else
+		if (pending == CAS_RESET_SPARE)
+			goto done;
+#endif
+		/* when pending == CAS_RESET_ALL, the following
+		 * call to cas_init_hw will restart auto negotiation.
+		 * Setting the second argument of cas_reset to
+		 * !(pending == CAS_RESET_ALL) will set this argument
+		 * to 1 (avoiding reinitializing the PHY for the normal
+		 * PCS case) when auto negotiation is not restarted.
+		 */
+#if 1
+		cas_reset(cp, !(pending_all > 0));
+		if (cp->opened)
+			cas_clean_rings(cp);
+		cas_init_hw(cp, (pending_all > 0));
+#else
+		cas_reset(cp, !(pending == CAS_RESET_ALL));
+		if (cp->opened)
+			cas_clean_rings(cp);
+		cas_init_hw(cp, pending == CAS_RESET_ALL);
+#endif
+
+done:
+		cas_unlock_all_restore(cp, flags);
+		netif_device_attach(cp->dev);
+	}
+#if 1
+	atomic_sub(pending_all, &cp->reset_task_pending_all);
+	atomic_sub(pending_spare, &cp->reset_task_pending_spare);
+	atomic_sub(pending_mtu, &cp->reset_task_pending_mtu);
+	atomic_dec(&cp->reset_task_pending);
+#else
+	atomic_set(&cp->reset_task_pending, 0);
+#endif
+}
+
+static void cas_link_timer(struct timer_list *t)
+{
+	struct cas *cp = from_timer(cp, t, link_timer);
+	int mask, pending = 0, reset = 0;
+	unsigned long flags;
+
+	if (link_transition_timeout != 0 &&
+	    cp->link_transition_jiffies_valid &&
+	    ((jiffies - cp->link_transition_jiffies) >
+	      (link_transition_timeout))) {
+		/* One-second counter so link-down workaround doesn't
+		 * cause resets to occur so fast as to fool the switch
+		 * into thinking the link is down.
+		 */
+		cp->link_transition_jiffies_valid = 0;
+	}
+
+	if (!cp->hw_running)
+		return;
+
+	spin_lock_irqsave(&cp->lock, flags);
+	cas_lock_tx(cp);
+	cas_entropy_gather(cp);
+
+	/* If the link task is still pending, we just
+	 * reschedule the link timer
+	 */
+#if 1
+	if (atomic_read(&cp->reset_task_pending_all) ||
+	    atomic_read(&cp->reset_task_pending_spare) ||
+	    atomic_read(&cp->reset_task_pending_mtu))
+		goto done;
+#else
+	if (atomic_read(&cp->reset_task_pending))
+		goto done;
+#endif
+
+	/* check for rx cleaning */
+	if ((mask = (cp->cas_flags & CAS_FLAG_RXD_POST_MASK))) {
+		int i, rmask;
+
+		for (i = 0; i < MAX_RX_DESC_RINGS; i++) {
+			rmask = CAS_FLAG_RXD_POST(i);
+			if ((mask & rmask) == 0)
+				continue;
+
+			/* post_rxds will do a mod_timer */
+			if (cas_post_rxds_ringN(cp, i, cp->rx_last[i]) < 0) {
+				pending = 1;
+				continue;
+			}
+			cp->cas_flags &= ~rmask;
+		}
+	}
+
+	if (CAS_PHY_MII(cp->phy_type)) {
+		u16 bmsr;
+		cas_mif_poll(cp, 0);
+		bmsr = cas_phy_read(cp, MII_BMSR);
+		/* WTZ: Solaris driver reads this twice, but that
+		 * may be due to the PCS case and the use of a
+		 * common implementation. Read it twice here to be
+		 * safe.
+		 */
+		bmsr = cas_phy_read(cp, MII_BMSR);
+		cas_mif_poll(cp, 1);
+		readl(cp->regs + REG_MIF_STATUS); /* avoid dups */
+		reset = cas_mii_link_check(cp, bmsr);
+	} else {
+		reset = cas_pcs_link_check(cp);
+	}
+
+	if (reset)
+		goto done;
+
+	/* check for tx state machine confusion */
+	if ((readl(cp->regs + REG_MAC_TX_STATUS) & MAC_TX_FRAME_XMIT) == 0) {
+		u32 val = readl(cp->regs + REG_MAC_STATE_MACHINE);
+		u32 wptr, rptr;
+		int tlm  = CAS_VAL(MAC_SM_TLM, val);
+
+		if (((tlm == 0x5) || (tlm == 0x3)) &&
+		    (CAS_VAL(MAC_SM_ENCAP_SM, val) == 0)) {
+			netif_printk(cp, tx_err, KERN_DEBUG, cp->dev,
+				     "tx err: MAC_STATE[%08x]\n", val);
+			reset = 1;
+			goto done;
+		}
+
+		val  = readl(cp->regs + REG_TX_FIFO_PKT_CNT);
+		wptr = readl(cp->regs + REG_TX_FIFO_WRITE_PTR);
+		rptr = readl(cp->regs + REG_TX_FIFO_READ_PTR);
+		if ((val == 0) && (wptr != rptr)) {
+			netif_printk(cp, tx_err, KERN_DEBUG, cp->dev,
+				     "tx err: TX_FIFO[%08x:%08x:%08x]\n",
+				     val, wptr, rptr);
+			reset = 1;
+		}
+
+		if (reset)
+			cas_hard_reset(cp);
+	}
+
+done:
+	if (reset) {
+#if 1
+		atomic_inc(&cp->reset_task_pending);
+		atomic_inc(&cp->reset_task_pending_all);
+		schedule_work(&cp->reset_task);
+#else
+		atomic_set(&cp->reset_task_pending, CAS_RESET_ALL);
+		pr_err("reset called in cas_link_timer\n");
+		schedule_work(&cp->reset_task);
+#endif
+	}
+
+	if (!pending)
+		mod_timer(&cp->link_timer, jiffies + CAS_LINK_TIMEOUT);
+	cas_unlock_tx(cp);
+	spin_unlock_irqrestore(&cp->lock, flags);
+}
+
+/* tiny buffers are used to avoid target abort issues with
+ * older cassini's
+ */
+static void cas_tx_tiny_free(struct cas *cp)
+{
+	struct pci_dev *pdev = cp->pdev;
+	int i;
+
+	for (i = 0; i < N_TX_RINGS; i++) {
+		if (!cp->tx_tiny_bufs[i])
+			continue;
+
+		pci_free_consistent(pdev, TX_TINY_BUF_BLOCK,
+				    cp->tx_tiny_bufs[i],
+				    cp->tx_tiny_dvma[i]);
+		cp->tx_tiny_bufs[i] = NULL;
+	}
+}
+
+static int cas_tx_tiny_alloc(struct cas *cp)
+{
+	struct pci_dev *pdev = cp->pdev;
+	int i;
+
+	for (i = 0; i < N_TX_RINGS; i++) {
+		cp->tx_tiny_bufs[i] =
+			pci_alloc_consistent(pdev, TX_TINY_BUF_BLOCK,
+					     &cp->tx_tiny_dvma[i]);
+		if (!cp->tx_tiny_bufs[i]) {
+			cas_tx_tiny_free(cp);
+			return -1;
+		}
+	}
+	return 0;
+}
+
+
+static int cas_open(struct net_device *dev)
+{
+	struct cas *cp = netdev_priv(dev);
+	int hw_was_up, err;
+	unsigned long flags;
+
+	mutex_lock(&cp->pm_mutex);
+
+	hw_was_up = cp->hw_running;
+
+	/* The power-management mutex protects the hw_running
+	 * etc. state so it is safe to do this bit without cp->lock
+	 */
+	if (!cp->hw_running) {
+		/* Reset the chip */
+		cas_lock_all_save(cp, flags);
+		/* We set the second arg to cas_reset to zero
+		 * because cas_init_hw below will have its second
+		 * argument set to non-zero, which will force
+		 * autonegotiation to start.
+		 */
+		cas_reset(cp, 0);
+		cp->hw_running = 1;
+		cas_unlock_all_restore(cp, flags);
+	}
+
+	err = -ENOMEM;
+	if (cas_tx_tiny_alloc(cp) < 0)
+		goto err_unlock;
+
+	/* alloc rx descriptors */
+	if (cas_alloc_rxds(cp) < 0)
+		goto err_tx_tiny;
+
+	/* allocate spares */
+	cas_spare_init(cp);
+	cas_spare_recover(cp, GFP_KERNEL);
+
+	/* We can now request the interrupt as we know it's masked
+	 * on the controller. cassini+ has up to 4 interrupts
+	 * that can be used, but you need to do explicit pci interrupt
+	 * mapping to expose them
+	 */
+	if (request_irq(cp->pdev->irq, cas_interrupt,
+			IRQF_SHARED, dev->name, (void *) dev)) {
+		netdev_err(cp->dev, "failed to request irq !\n");
+		err = -EAGAIN;
+		goto err_spare;
+	}
+
+#ifdef USE_NAPI
+	napi_enable(&cp->napi);
+#endif
+	/* init hw */
+	cas_lock_all_save(cp, flags);
+	cas_clean_rings(cp);
+	cas_init_hw(cp, !hw_was_up);
+	cp->opened = 1;
+	cas_unlock_all_restore(cp, flags);
+
+	netif_start_queue(dev);
+	mutex_unlock(&cp->pm_mutex);
+	return 0;
+
+err_spare:
+	cas_spare_free(cp);
+	cas_free_rxds(cp);
+err_tx_tiny:
+	cas_tx_tiny_free(cp);
+err_unlock:
+	mutex_unlock(&cp->pm_mutex);
+	return err;
+}
+
+static int cas_close(struct net_device *dev)
+{
+	unsigned long flags;
+	struct cas *cp = netdev_priv(dev);
+
+#ifdef USE_NAPI
+	napi_disable(&cp->napi);
+#endif
+	/* Make sure we don't get distracted by suspend/resume */
+	mutex_lock(&cp->pm_mutex);
+
+	netif_stop_queue(dev);
+
+	/* Stop traffic, mark us closed */
+	cas_lock_all_save(cp, flags);
+	cp->opened = 0;
+	cas_reset(cp, 0);
+	cas_phy_init(cp);
+	cas_begin_auto_negotiation(cp, NULL);
+	cas_clean_rings(cp);
+	cas_unlock_all_restore(cp, flags);
+
+	free_irq(cp->pdev->irq, (void *) dev);
+	cas_spare_free(cp);
+	cas_free_rxds(cp);
+	cas_tx_tiny_free(cp);
+	mutex_unlock(&cp->pm_mutex);
+	return 0;
+}
+
+static struct {
+	const char name[ETH_GSTRING_LEN];
+} ethtool_cassini_statnames[] = {
+	{"collisions"},
+	{"rx_bytes"},
+	{"rx_crc_errors"},
+	{"rx_dropped"},
+	{"rx_errors"},
+	{"rx_fifo_errors"},
+	{"rx_frame_errors"},
+	{"rx_length_errors"},
+	{"rx_over_errors"},
+	{"rx_packets"},
+	{"tx_aborted_errors"},
+	{"tx_bytes"},
+	{"tx_dropped"},
+	{"tx_errors"},
+	{"tx_fifo_errors"},
+	{"tx_packets"}
+};
+#define CAS_NUM_STAT_KEYS ARRAY_SIZE(ethtool_cassini_statnames)
+
+static struct {
+	const int offsets;	/* neg. values for 2nd arg to cas_read_phy */
+} ethtool_register_table[] = {
+	{-MII_BMSR},
+	{-MII_BMCR},
+	{REG_CAWR},
+	{REG_INF_BURST},
+	{REG_BIM_CFG},
+	{REG_RX_CFG},
+	{REG_HP_CFG},
+	{REG_MAC_TX_CFG},
+	{REG_MAC_RX_CFG},
+	{REG_MAC_CTRL_CFG},
+	{REG_MAC_XIF_CFG},
+	{REG_MIF_CFG},
+	{REG_PCS_CFG},
+	{REG_SATURN_PCFG},
+	{REG_PCS_MII_STATUS},
+	{REG_PCS_STATE_MACHINE},
+	{REG_MAC_COLL_EXCESS},
+	{REG_MAC_COLL_LATE}
+};
+#define CAS_REG_LEN 	ARRAY_SIZE(ethtool_register_table)
+#define CAS_MAX_REGS 	(sizeof (u32)*CAS_REG_LEN)
+
+static void cas_read_regs(struct cas *cp, u8 *ptr, int len)
+{
+	u8 *p;
+	int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&cp->lock, flags);
+	for (i = 0, p = ptr; i < len ; i ++, p += sizeof(u32)) {
+		u16 hval;
+		u32 val;
+		if (ethtool_register_table[i].offsets < 0) {
+			hval = cas_phy_read(cp,
+				    -ethtool_register_table[i].offsets);
+			val = hval;
+		} else {
+			val= readl(cp->regs+ethtool_register_table[i].offsets);
+		}
+		memcpy(p, (u8 *)&val, sizeof(u32));
+	}
+	spin_unlock_irqrestore(&cp->lock, flags);
+}
+
+static struct net_device_stats *cas_get_stats(struct net_device *dev)
+{
+	struct cas *cp = netdev_priv(dev);
+	struct net_device_stats *stats = cp->net_stats;
+	unsigned long flags;
+	int i;
+	unsigned long tmp;
+
+	/* we collate all of the stats into net_stats[N_TX_RING] */
+	if (!cp->hw_running)
+		return stats + N_TX_RINGS;
+
+	/* collect outstanding stats */
+	/* WTZ: the Cassini spec gives these as 16 bit counters but
+	 * stored in 32-bit words.  Added a mask of 0xffff to be safe,
+	 * in case the chip somehow puts any garbage in the other bits.
+	 * Also, counter usage didn't seem to mach what Adrian did
+	 * in the parts of the code that set these quantities. Made
+	 * that consistent.
+	 */
+	spin_lock_irqsave(&cp->stat_lock[N_TX_RINGS], flags);
+	stats[N_TX_RINGS].rx_crc_errors +=
+	  readl(cp->regs + REG_MAC_FCS_ERR) & 0xffff;
+	stats[N_TX_RINGS].rx_frame_errors +=
+		readl(cp->regs + REG_MAC_ALIGN_ERR) &0xffff;
+	stats[N_TX_RINGS].rx_length_errors +=
+		readl(cp->regs + REG_MAC_LEN_ERR) & 0xffff;
+#if 1
+	tmp = (readl(cp->regs + REG_MAC_COLL_EXCESS) & 0xffff) +
+		(readl(cp->regs + REG_MAC_COLL_LATE) & 0xffff);
+	stats[N_TX_RINGS].tx_aborted_errors += tmp;
+	stats[N_TX_RINGS].collisions +=
+	  tmp + (readl(cp->regs + REG_MAC_COLL_NORMAL) & 0xffff);
+#else
+	stats[N_TX_RINGS].tx_aborted_errors +=
+		readl(cp->regs + REG_MAC_COLL_EXCESS);
+	stats[N_TX_RINGS].collisions += readl(cp->regs + REG_MAC_COLL_EXCESS) +
+		readl(cp->regs + REG_MAC_COLL_LATE);
+#endif
+	cas_clear_mac_err(cp);
+
+	/* saved bits that are unique to ring 0 */
+	spin_lock(&cp->stat_lock[0]);
+	stats[N_TX_RINGS].collisions        += stats[0].collisions;
+	stats[N_TX_RINGS].rx_over_errors    += stats[0].rx_over_errors;
+	stats[N_TX_RINGS].rx_frame_errors   += stats[0].rx_frame_errors;
+	stats[N_TX_RINGS].rx_fifo_errors    += stats[0].rx_fifo_errors;
+	stats[N_TX_RINGS].tx_aborted_errors += stats[0].tx_aborted_errors;
+	stats[N_TX_RINGS].tx_fifo_errors    += stats[0].tx_fifo_errors;
+	spin_unlock(&cp->stat_lock[0]);
+
+	for (i = 0; i < N_TX_RINGS; i++) {
+		spin_lock(&cp->stat_lock[i]);
+		stats[N_TX_RINGS].rx_length_errors +=
+			stats[i].rx_length_errors;
+		stats[N_TX_RINGS].rx_crc_errors += stats[i].rx_crc_errors;
+		stats[N_TX_RINGS].rx_packets    += stats[i].rx_packets;
+		stats[N_TX_RINGS].tx_packets    += stats[i].tx_packets;
+		stats[N_TX_RINGS].rx_bytes      += stats[i].rx_bytes;
+		stats[N_TX_RINGS].tx_bytes      += stats[i].tx_bytes;
+		stats[N_TX_RINGS].rx_errors     += stats[i].rx_errors;
+		stats[N_TX_RINGS].tx_errors     += stats[i].tx_errors;
+		stats[N_TX_RINGS].rx_dropped    += stats[i].rx_dropped;
+		stats[N_TX_RINGS].tx_dropped    += stats[i].tx_dropped;
+		memset(stats + i, 0, sizeof(struct net_device_stats));
+		spin_unlock(&cp->stat_lock[i]);
+	}
+	spin_unlock_irqrestore(&cp->stat_lock[N_TX_RINGS], flags);
+	return stats + N_TX_RINGS;
+}
+
+
+static void cas_set_multicast(struct net_device *dev)
+{
+	struct cas *cp = netdev_priv(dev);
+	u32 rxcfg, rxcfg_new;
+	unsigned long flags;
+	int limit = STOP_TRIES;
+
+	if (!cp->hw_running)
+		return;
+
+	spin_lock_irqsave(&cp->lock, flags);
+	rxcfg = readl(cp->regs + REG_MAC_RX_CFG);
+
+	/* disable RX MAC and wait for completion */
+	writel(rxcfg & ~MAC_RX_CFG_EN, cp->regs + REG_MAC_RX_CFG);
+	while (readl(cp->regs + REG_MAC_RX_CFG) & MAC_RX_CFG_EN) {
+		if (!limit--)
+			break;
+		udelay(10);
+	}
+
+	/* disable hash filter and wait for completion */
+	limit = STOP_TRIES;
+	rxcfg &= ~(MAC_RX_CFG_PROMISC_EN | MAC_RX_CFG_HASH_FILTER_EN);
+	writel(rxcfg & ~MAC_RX_CFG_EN, cp->regs + REG_MAC_RX_CFG);
+	while (readl(cp->regs + REG_MAC_RX_CFG) & MAC_RX_CFG_HASH_FILTER_EN) {
+		if (!limit--)
+			break;
+		udelay(10);
+	}
+
+	/* program hash filters */
+	cp->mac_rx_cfg = rxcfg_new = cas_setup_multicast(cp);
+	rxcfg |= rxcfg_new;
+	writel(rxcfg, cp->regs + REG_MAC_RX_CFG);
+	spin_unlock_irqrestore(&cp->lock, flags);
+}
+
+static void cas_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	struct cas *cp = netdev_priv(dev);
+	strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
+	strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
+	strlcpy(info->bus_info, pci_name(cp->pdev), sizeof(info->bus_info));
+}
+
+static int cas_get_link_ksettings(struct net_device *dev,
+				  struct ethtool_link_ksettings *cmd)
+{
+	struct cas *cp = netdev_priv(dev);
+	u16 bmcr;
+	int full_duplex, speed, pause;
+	unsigned long flags;
+	enum link_state linkstate = link_up;
+	u32 supported, advertising;
+
+	advertising = 0;
+	supported = SUPPORTED_Autoneg;
+	if (cp->cas_flags & CAS_FLAG_1000MB_CAP) {
+		supported |= SUPPORTED_1000baseT_Full;
+		advertising |= ADVERTISED_1000baseT_Full;
+	}
+
+	/* Record PHY settings if HW is on. */
+	spin_lock_irqsave(&cp->lock, flags);
+	bmcr = 0;
+	linkstate = cp->lstate;
+	if (CAS_PHY_MII(cp->phy_type)) {
+		cmd->base.port = PORT_MII;
+		cmd->base.phy_address = cp->phy_addr;
+		advertising |= ADVERTISED_TP | ADVERTISED_MII |
+			ADVERTISED_10baseT_Half |
+			ADVERTISED_10baseT_Full |
+			ADVERTISED_100baseT_Half |
+			ADVERTISED_100baseT_Full;
+
+		supported |=
+			(SUPPORTED_10baseT_Half |
+			 SUPPORTED_10baseT_Full |
+			 SUPPORTED_100baseT_Half |
+			 SUPPORTED_100baseT_Full |
+			 SUPPORTED_TP | SUPPORTED_MII);
+
+		if (cp->hw_running) {
+			cas_mif_poll(cp, 0);
+			bmcr = cas_phy_read(cp, MII_BMCR);
+			cas_read_mii_link_mode(cp, &full_duplex,
+					       &speed, &pause);
+			cas_mif_poll(cp, 1);
+		}
+
+	} else {
+		cmd->base.port = PORT_FIBRE;
+		cmd->base.phy_address = 0;
+		supported   |= SUPPORTED_FIBRE;
+		advertising |= ADVERTISED_FIBRE;
+
+		if (cp->hw_running) {
+			/* pcs uses the same bits as mii */
+			bmcr = readl(cp->regs + REG_PCS_MII_CTRL);
+			cas_read_pcs_link_mode(cp, &full_duplex,
+					       &speed, &pause);
+		}
+	}
+	spin_unlock_irqrestore(&cp->lock, flags);
+
+	if (bmcr & BMCR_ANENABLE) {
+		advertising |= ADVERTISED_Autoneg;
+		cmd->base.autoneg = AUTONEG_ENABLE;
+		cmd->base.speed =  ((speed == 10) ?
+					    SPEED_10 :
+					    ((speed == 1000) ?
+					     SPEED_1000 : SPEED_100));
+		cmd->base.duplex = full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
+	} else {
+		cmd->base.autoneg = AUTONEG_DISABLE;
+		cmd->base.speed = ((bmcr & CAS_BMCR_SPEED1000) ?
+					    SPEED_1000 :
+					    ((bmcr & BMCR_SPEED100) ?
+					     SPEED_100 : SPEED_10));
+		cmd->base.duplex = (bmcr & BMCR_FULLDPLX) ?
+			DUPLEX_FULL : DUPLEX_HALF;
+	}
+	if (linkstate != link_up) {
+		/* Force these to "unknown" if the link is not up and
+		 * autonogotiation in enabled. We can set the link
+		 * speed to 0, but not cmd->duplex,
+		 * because its legal values are 0 and 1.  Ethtool will
+		 * print the value reported in parentheses after the
+		 * word "Unknown" for unrecognized values.
+		 *
+		 * If in forced mode, we report the speed and duplex
+		 * settings that we configured.
+		 */
+		if (cp->link_cntl & BMCR_ANENABLE) {
+			cmd->base.speed = 0;
+			cmd->base.duplex = 0xff;
+		} else {
+			cmd->base.speed = SPEED_10;
+			if (cp->link_cntl & BMCR_SPEED100) {
+				cmd->base.speed = SPEED_100;
+			} else if (cp->link_cntl & CAS_BMCR_SPEED1000) {
+				cmd->base.speed = SPEED_1000;
+			}
+			cmd->base.duplex = (cp->link_cntl & BMCR_FULLDPLX) ?
+				DUPLEX_FULL : DUPLEX_HALF;
+		}
+	}
+
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
+						supported);
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
+						advertising);
+
+	return 0;
+}
+
+static int cas_set_link_ksettings(struct net_device *dev,
+				  const struct ethtool_link_ksettings *cmd)
+{
+	struct cas *cp = netdev_priv(dev);
+	unsigned long flags;
+	u32 speed = cmd->base.speed;
+
+	/* Verify the settings we care about. */
+	if (cmd->base.autoneg != AUTONEG_ENABLE &&
+	    cmd->base.autoneg != AUTONEG_DISABLE)
+		return -EINVAL;
+
+	if (cmd->base.autoneg == AUTONEG_DISABLE &&
+	    ((speed != SPEED_1000 &&
+	      speed != SPEED_100 &&
+	      speed != SPEED_10) ||
+	     (cmd->base.duplex != DUPLEX_HALF &&
+	      cmd->base.duplex != DUPLEX_FULL)))
+		return -EINVAL;
+
+	/* Apply settings and restart link process. */
+	spin_lock_irqsave(&cp->lock, flags);
+	cas_begin_auto_negotiation(cp, cmd);
+	spin_unlock_irqrestore(&cp->lock, flags);
+	return 0;
+}
+
+static int cas_nway_reset(struct net_device *dev)
+{
+	struct cas *cp = netdev_priv(dev);
+	unsigned long flags;
+
+	if ((cp->link_cntl & BMCR_ANENABLE) == 0)
+		return -EINVAL;
+
+	/* Restart link process. */
+	spin_lock_irqsave(&cp->lock, flags);
+	cas_begin_auto_negotiation(cp, NULL);
+	spin_unlock_irqrestore(&cp->lock, flags);
+
+	return 0;
+}
+
+static u32 cas_get_link(struct net_device *dev)
+{
+	struct cas *cp = netdev_priv(dev);
+	return cp->lstate == link_up;
+}
+
+static u32 cas_get_msglevel(struct net_device *dev)
+{
+	struct cas *cp = netdev_priv(dev);
+	return cp->msg_enable;
+}
+
+static void cas_set_msglevel(struct net_device *dev, u32 value)
+{
+	struct cas *cp = netdev_priv(dev);
+	cp->msg_enable = value;
+}
+
+static int cas_get_regs_len(struct net_device *dev)
+{
+	struct cas *cp = netdev_priv(dev);
+	return cp->casreg_len < CAS_MAX_REGS ? cp->casreg_len: CAS_MAX_REGS;
+}
+
+static void cas_get_regs(struct net_device *dev, struct ethtool_regs *regs,
+			     void *p)
+{
+	struct cas *cp = netdev_priv(dev);
+	regs->version = 0;
+	/* cas_read_regs handles locks (cp->lock).  */
+	cas_read_regs(cp, p, regs->len / sizeof(u32));
+}
+
+static int cas_get_sset_count(struct net_device *dev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_STATS:
+		return CAS_NUM_STAT_KEYS;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void cas_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+	 memcpy(data, &ethtool_cassini_statnames,
+					 CAS_NUM_STAT_KEYS * ETH_GSTRING_LEN);
+}
+
+static void cas_get_ethtool_stats(struct net_device *dev,
+				      struct ethtool_stats *estats, u64 *data)
+{
+	struct cas *cp = netdev_priv(dev);
+	struct net_device_stats *stats = cas_get_stats(cp->dev);
+	int i = 0;
+	data[i++] = stats->collisions;
+	data[i++] = stats->rx_bytes;
+	data[i++] = stats->rx_crc_errors;
+	data[i++] = stats->rx_dropped;
+	data[i++] = stats->rx_errors;
+	data[i++] = stats->rx_fifo_errors;
+	data[i++] = stats->rx_frame_errors;
+	data[i++] = stats->rx_length_errors;
+	data[i++] = stats->rx_over_errors;
+	data[i++] = stats->rx_packets;
+	data[i++] = stats->tx_aborted_errors;
+	data[i++] = stats->tx_bytes;
+	data[i++] = stats->tx_dropped;
+	data[i++] = stats->tx_errors;
+	data[i++] = stats->tx_fifo_errors;
+	data[i++] = stats->tx_packets;
+	BUG_ON(i != CAS_NUM_STAT_KEYS);
+}
+
+static const struct ethtool_ops cas_ethtool_ops = {
+	.get_drvinfo		= cas_get_drvinfo,
+	.nway_reset		= cas_nway_reset,
+	.get_link		= cas_get_link,
+	.get_msglevel		= cas_get_msglevel,
+	.set_msglevel		= cas_set_msglevel,
+	.get_regs_len		= cas_get_regs_len,
+	.get_regs		= cas_get_regs,
+	.get_sset_count		= cas_get_sset_count,
+	.get_strings		= cas_get_strings,
+	.get_ethtool_stats	= cas_get_ethtool_stats,
+	.get_link_ksettings	= cas_get_link_ksettings,
+	.set_link_ksettings	= cas_set_link_ksettings,
+};
+
+static int cas_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+	struct cas *cp = netdev_priv(dev);
+	struct mii_ioctl_data *data = if_mii(ifr);
+	unsigned long flags;
+	int rc = -EOPNOTSUPP;
+
+	/* Hold the PM mutex while doing ioctl's or we may collide
+	 * with open/close and power management and oops.
+	 */
+	mutex_lock(&cp->pm_mutex);
+	switch (cmd) {
+	case SIOCGMIIPHY:		/* Get address of MII PHY in use. */
+		data->phy_id = cp->phy_addr;
+		/* Fallthrough... */
+
+	case SIOCGMIIREG:		/* Read MII PHY register. */
+		spin_lock_irqsave(&cp->lock, flags);
+		cas_mif_poll(cp, 0);
+		data->val_out = cas_phy_read(cp, data->reg_num & 0x1f);
+		cas_mif_poll(cp, 1);
+		spin_unlock_irqrestore(&cp->lock, flags);
+		rc = 0;
+		break;
+
+	case SIOCSMIIREG:		/* Write MII PHY register. */
+		spin_lock_irqsave(&cp->lock, flags);
+		cas_mif_poll(cp, 0);
+		rc = cas_phy_write(cp, data->reg_num & 0x1f, data->val_in);
+		cas_mif_poll(cp, 1);
+		spin_unlock_irqrestore(&cp->lock, flags);
+		break;
+	default:
+		break;
+	}
+
+	mutex_unlock(&cp->pm_mutex);
+	return rc;
+}
+
+/* When this chip sits underneath an Intel 31154 bridge, it is the
+ * only subordinate device and we can tweak the bridge settings to
+ * reflect that fact.
+ */
+static void cas_program_bridge(struct pci_dev *cas_pdev)
+{
+	struct pci_dev *pdev = cas_pdev->bus->self;
+	u32 val;
+
+	if (!pdev)
+		return;
+
+	if (pdev->vendor != 0x8086 || pdev->device != 0x537c)
+		return;
+
+	/* Clear bit 10 (Bus Parking Control) in the Secondary
+	 * Arbiter Control/Status Register which lives at offset
+	 * 0x41.  Using a 32-bit word read/modify/write at 0x40
+	 * is much simpler so that's how we do this.
+	 */
+	pci_read_config_dword(pdev, 0x40, &val);
+	val &= ~0x00040000;
+	pci_write_config_dword(pdev, 0x40, val);
+
+	/* Max out the Multi-Transaction Timer settings since
+	 * Cassini is the only device present.
+	 *
+	 * The register is 16-bit and lives at 0x50.  When the
+	 * settings are enabled, it extends the GRANT# signal
+	 * for a requestor after a transaction is complete.  This
+	 * allows the next request to run without first needing
+	 * to negotiate the GRANT# signal back.
+	 *
+	 * Bits 12:10 define the grant duration:
+	 *
+	 *	1	--	16 clocks
+	 *	2	--	32 clocks
+	 *	3	--	64 clocks
+	 *	4	--	128 clocks
+	 *	5	--	256 clocks
+	 *
+	 * All other values are illegal.
+	 *
+	 * Bits 09:00 define which REQ/GNT signal pairs get the
+	 * GRANT# signal treatment.  We set them all.
+	 */
+	pci_write_config_word(pdev, 0x50, (5 << 10) | 0x3ff);
+
+	/* The Read Prefecth Policy register is 16-bit and sits at
+	 * offset 0x52.  It enables a "smart" pre-fetch policy.  We
+	 * enable it and max out all of the settings since only one
+	 * device is sitting underneath and thus bandwidth sharing is
+	 * not an issue.
+	 *
+	 * The register has several 3 bit fields, which indicates a
+	 * multiplier applied to the base amount of prefetching the
+	 * chip would do.  These fields are at:
+	 *
+	 *	15:13	---	ReRead Primary Bus
+	 *	12:10	---	FirstRead Primary Bus
+	 *	09:07	---	ReRead Secondary Bus
+	 *	06:04	---	FirstRead Secondary Bus
+	 *
+	 * Bits 03:00 control which REQ/GNT pairs the prefetch settings
+	 * get enabled on.  Bit 3 is a grouped enabler which controls
+	 * all of the REQ/GNT pairs from [8:3].  Bits 2 to 0 control
+	 * the individual REQ/GNT pairs [2:0].
+	 */
+	pci_write_config_word(pdev, 0x52,
+			      (0x7 << 13) |
+			      (0x7 << 10) |
+			      (0x7 <<  7) |
+			      (0x7 <<  4) |
+			      (0xf <<  0));
+
+	/* Force cacheline size to 0x8 */
+	pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
+
+	/* Force latency timer to maximum setting so Cassini can
+	 * sit on the bus as long as it likes.
+	 */
+	pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xff);
+}
+
+static const struct net_device_ops cas_netdev_ops = {
+	.ndo_open		= cas_open,
+	.ndo_stop		= cas_close,
+	.ndo_start_xmit		= cas_start_xmit,
+	.ndo_get_stats 		= cas_get_stats,
+	.ndo_set_rx_mode	= cas_set_multicast,
+	.ndo_do_ioctl		= cas_ioctl,
+	.ndo_tx_timeout		= cas_tx_timeout,
+	.ndo_change_mtu		= cas_change_mtu,
+	.ndo_set_mac_address	= eth_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= cas_netpoll,
+#endif
+};
+
+static int cas_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	static int cas_version_printed = 0;
+	unsigned long casreg_len;
+	struct net_device *dev;
+	struct cas *cp;
+	int i, err, pci_using_dac;
+	u16 pci_cmd;
+	u8 orig_cacheline_size = 0, cas_cacheline_size = 0;
+
+	if (cas_version_printed++ == 0)
+		pr_info("%s", version);
+
+	err = pci_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
+		return err;
+	}
+
+	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+		dev_err(&pdev->dev, "Cannot find proper PCI device "
+		       "base address, aborting\n");
+		err = -ENODEV;
+		goto err_out_disable_pdev;
+	}
+
+	dev = alloc_etherdev(sizeof(*cp));
+	if (!dev) {
+		err = -ENOMEM;
+		goto err_out_disable_pdev;
+	}
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+	err = pci_request_regions(pdev, dev->name);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
+		goto err_out_free_netdev;
+	}
+	pci_set_master(pdev);
+
+	/* we must always turn on parity response or else parity
+	 * doesn't get generated properly. disable SERR/PERR as well.
+	 * in addition, we want to turn MWI on.
+	 */
+	pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
+	pci_cmd &= ~PCI_COMMAND_SERR;
+	pci_cmd |= PCI_COMMAND_PARITY;
+	pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
+	if (pci_try_set_mwi(pdev))
+		pr_warn("Could not enable MWI for %s\n", pci_name(pdev));
+
+	cas_program_bridge(pdev);
+
+	/*
+	 * On some architectures, the default cache line size set
+	 * by pci_try_set_mwi reduces perforamnce.  We have to increase
+	 * it for this case.  To start, we'll print some configuration
+	 * data.
+	 */
+#if 1
+	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE,
+			     &orig_cacheline_size);
+	if (orig_cacheline_size < CAS_PREF_CACHELINE_SIZE) {
+		cas_cacheline_size =
+			(CAS_PREF_CACHELINE_SIZE < SMP_CACHE_BYTES) ?
+			CAS_PREF_CACHELINE_SIZE : SMP_CACHE_BYTES;
+		if (pci_write_config_byte(pdev,
+					  PCI_CACHE_LINE_SIZE,
+					  cas_cacheline_size)) {
+			dev_err(&pdev->dev, "Could not set PCI cache "
+			       "line size\n");
+			goto err_out_free_res;
+		}
+	}
+#endif
+
+
+	/* Configure DMA attributes. */
+	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
+		pci_using_dac = 1;
+		err = pci_set_consistent_dma_mask(pdev,
+						  DMA_BIT_MASK(64));
+		if (err < 0) {
+			dev_err(&pdev->dev, "Unable to obtain 64-bit DMA "
+			       "for consistent allocations\n");
+			goto err_out_free_res;
+		}
+
+	} else {
+		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (err) {
+			dev_err(&pdev->dev, "No usable DMA configuration, "
+			       "aborting\n");
+			goto err_out_free_res;
+		}
+		pci_using_dac = 0;
+	}
+
+	casreg_len = pci_resource_len(pdev, 0);
+
+	cp = netdev_priv(dev);
+	cp->pdev = pdev;
+#if 1
+	/* A value of 0 indicates we never explicitly set it */
+	cp->orig_cacheline_size = cas_cacheline_size ? orig_cacheline_size: 0;
+#endif
+	cp->dev = dev;
+	cp->msg_enable = (cassini_debug < 0) ? CAS_DEF_MSG_ENABLE :
+	  cassini_debug;
+
+#if defined(CONFIG_SPARC)
+	cp->of_node = pci_device_to_OF_node(pdev);
+#endif
+
+	cp->link_transition = LINK_TRANSITION_UNKNOWN;
+	cp->link_transition_jiffies_valid = 0;
+
+	spin_lock_init(&cp->lock);
+	spin_lock_init(&cp->rx_inuse_lock);
+	spin_lock_init(&cp->rx_spare_lock);
+	for (i = 0; i < N_TX_RINGS; i++) {
+		spin_lock_init(&cp->stat_lock[i]);
+		spin_lock_init(&cp->tx_lock[i]);
+	}
+	spin_lock_init(&cp->stat_lock[N_TX_RINGS]);
+	mutex_init(&cp->pm_mutex);
+
+	timer_setup(&cp->link_timer, cas_link_timer, 0);
+
+#if 1
+	/* Just in case the implementation of atomic operations
+	 * change so that an explicit initialization is necessary.
+	 */
+	atomic_set(&cp->reset_task_pending, 0);
+	atomic_set(&cp->reset_task_pending_all, 0);
+	atomic_set(&cp->reset_task_pending_spare, 0);
+	atomic_set(&cp->reset_task_pending_mtu, 0);
+#endif
+	INIT_WORK(&cp->reset_task, cas_reset_task);
+
+	/* Default link parameters */
+	if (link_mode >= 0 && link_mode < 6)
+		cp->link_cntl = link_modes[link_mode];
+	else
+		cp->link_cntl = BMCR_ANENABLE;
+	cp->lstate = link_down;
+	cp->link_transition = LINK_TRANSITION_LINK_DOWN;
+	netif_carrier_off(cp->dev);
+	cp->timer_ticks = 0;
+
+	/* give us access to cassini registers */
+	cp->regs = pci_iomap(pdev, 0, casreg_len);
+	if (!cp->regs) {
+		dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
+		goto err_out_free_res;
+	}
+	cp->casreg_len = casreg_len;
+
+	pci_save_state(pdev);
+	cas_check_pci_invariants(cp);
+	cas_hard_reset(cp);
+	cas_reset(cp, 0);
+	if (cas_check_invariants(cp))
+		goto err_out_iounmap;
+	if (cp->cas_flags & CAS_FLAG_SATURN)
+		cas_saturn_firmware_init(cp);
+
+	cp->init_block = (struct cas_init_block *)
+		pci_alloc_consistent(pdev, sizeof(struct cas_init_block),
+				     &cp->block_dvma);
+	if (!cp->init_block) {
+		dev_err(&pdev->dev, "Cannot allocate init block, aborting\n");
+		goto err_out_iounmap;
+	}
+
+	for (i = 0; i < N_TX_RINGS; i++)
+		cp->init_txds[i] = cp->init_block->txds[i];
+
+	for (i = 0; i < N_RX_DESC_RINGS; i++)
+		cp->init_rxds[i] = cp->init_block->rxds[i];
+
+	for (i = 0; i < N_RX_COMP_RINGS; i++)
+		cp->init_rxcs[i] = cp->init_block->rxcs[i];
+
+	for (i = 0; i < N_RX_FLOWS; i++)
+		skb_queue_head_init(&cp->rx_flows[i]);
+
+	dev->netdev_ops = &cas_netdev_ops;
+	dev->ethtool_ops = &cas_ethtool_ops;
+	dev->watchdog_timeo = CAS_TX_TIMEOUT;
+
+#ifdef USE_NAPI
+	netif_napi_add(dev, &cp->napi, cas_poll, 64);
+#endif
+	dev->irq = pdev->irq;
+	dev->dma = 0;
+
+	/* Cassini features. */
+	if ((cp->cas_flags & CAS_FLAG_NO_HW_CSUM) == 0)
+		dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
+
+	if (pci_using_dac)
+		dev->features |= NETIF_F_HIGHDMA;
+
+	/* MTU range: 60 - varies or 9000 */
+	dev->min_mtu = CAS_MIN_MTU;
+	dev->max_mtu = CAS_MAX_MTU;
+
+	if (register_netdev(dev)) {
+		dev_err(&pdev->dev, "Cannot register net device, aborting\n");
+		goto err_out_free_consistent;
+	}
+
+	i = readl(cp->regs + REG_BIM_CFG);
+	netdev_info(dev, "Sun Cassini%s (%sbit/%sMHz PCI/%s) Ethernet[%d] %pM\n",
+		    (cp->cas_flags & CAS_FLAG_REG_PLUS) ? "+" : "",
+		    (i & BIM_CFG_32BIT) ? "32" : "64",
+		    (i & BIM_CFG_66MHZ) ? "66" : "33",
+		    (cp->phy_type == CAS_PHY_SERDES) ? "Fi" : "Cu", pdev->irq,
+		    dev->dev_addr);
+
+	pci_set_drvdata(pdev, dev);
+	cp->hw_running = 1;
+	cas_entropy_reset(cp);
+	cas_phy_init(cp);
+	cas_begin_auto_negotiation(cp, NULL);
+	return 0;
+
+err_out_free_consistent:
+	pci_free_consistent(pdev, sizeof(struct cas_init_block),
+			    cp->init_block, cp->block_dvma);
+
+err_out_iounmap:
+	mutex_lock(&cp->pm_mutex);
+	if (cp->hw_running)
+		cas_shutdown(cp);
+	mutex_unlock(&cp->pm_mutex);
+
+	pci_iounmap(pdev, cp->regs);
+
+
+err_out_free_res:
+	pci_release_regions(pdev);
+
+	/* Try to restore it in case the error occurred after we
+	 * set it.
+	 */
+	pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, orig_cacheline_size);
+
+err_out_free_netdev:
+	free_netdev(dev);
+
+err_out_disable_pdev:
+	pci_disable_device(pdev);
+	return -ENODEV;
+}
+
+static void cas_remove_one(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct cas *cp;
+	if (!dev)
+		return;
+
+	cp = netdev_priv(dev);
+	unregister_netdev(dev);
+
+	vfree(cp->fw_data);
+
+	mutex_lock(&cp->pm_mutex);
+	cancel_work_sync(&cp->reset_task);
+	if (cp->hw_running)
+		cas_shutdown(cp);
+	mutex_unlock(&cp->pm_mutex);
+
+#if 1
+	if (cp->orig_cacheline_size) {
+		/* Restore the cache line size if we had modified
+		 * it.
+		 */
+		pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
+				      cp->orig_cacheline_size);
+	}
+#endif
+	pci_free_consistent(pdev, sizeof(struct cas_init_block),
+			    cp->init_block, cp->block_dvma);
+	pci_iounmap(pdev, cp->regs);
+	free_netdev(dev);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+}
+
+#ifdef CONFIG_PM
+static int cas_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct cas *cp = netdev_priv(dev);
+	unsigned long flags;
+
+	mutex_lock(&cp->pm_mutex);
+
+	/* If the driver is opened, we stop the DMA */
+	if (cp->opened) {
+		netif_device_detach(dev);
+
+		cas_lock_all_save(cp, flags);
+
+		/* We can set the second arg of cas_reset to 0
+		 * because on resume, we'll call cas_init_hw with
+		 * its second arg set so that autonegotiation is
+		 * restarted.
+		 */
+		cas_reset(cp, 0);
+		cas_clean_rings(cp);
+		cas_unlock_all_restore(cp, flags);
+	}
+
+	if (cp->hw_running)
+		cas_shutdown(cp);
+	mutex_unlock(&cp->pm_mutex);
+
+	return 0;
+}
+
+static int cas_resume(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct cas *cp = netdev_priv(dev);
+
+	netdev_info(dev, "resuming\n");
+
+	mutex_lock(&cp->pm_mutex);
+	cas_hard_reset(cp);
+	if (cp->opened) {
+		unsigned long flags;
+		cas_lock_all_save(cp, flags);
+		cas_reset(cp, 0);
+		cp->hw_running = 1;
+		cas_clean_rings(cp);
+		cas_init_hw(cp, 1);
+		cas_unlock_all_restore(cp, flags);
+
+		netif_device_attach(dev);
+	}
+	mutex_unlock(&cp->pm_mutex);
+	return 0;
+}
+#endif /* CONFIG_PM */
+
+static struct pci_driver cas_driver = {
+	.name		= DRV_MODULE_NAME,
+	.id_table	= cas_pci_tbl,
+	.probe		= cas_init_one,
+	.remove		= cas_remove_one,
+#ifdef CONFIG_PM
+	.suspend	= cas_suspend,
+	.resume		= cas_resume
+#endif
+};
+
+static int __init cas_init(void)
+{
+	if (linkdown_timeout > 0)
+		link_transition_timeout = linkdown_timeout * HZ;
+	else
+		link_transition_timeout = 0;
+
+	return pci_register_driver(&cas_driver);
+}
+
+static void __exit cas_cleanup(void)
+{
+	pci_unregister_driver(&cas_driver);
+}
+
+module_init(cas_init);
+module_exit(cas_cleanup);
diff --git a/drivers/net/ethernet/sun/cassini.h b/drivers/net/ethernet/sun/cassini.h
new file mode 100644
index 000000000..ae5f05f03
--- /dev/null
+++ b/drivers/net/ethernet/sun/cassini.h
@@ -0,0 +1,2900 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* $Id: cassini.h,v 1.16 2004/08/17 21:15:16 zaumen Exp $
+ * cassini.h: Definitions for Sun Microsystems Cassini(+) ethernet driver.
+ *
+ * Copyright (C) 2004 Sun Microsystems Inc.
+ * Copyright (c) 2003 Adrian Sun (asun@darksunrising.com)
+ *
+ * vendor id: 0x108E (Sun Microsystems, Inc.)
+ * device id: 0xabba (Cassini)
+ * revision ids: 0x01 = Cassini
+ *               0x02 = Cassini rev 2
+ *               0x10 = Cassini+
+ *               0x11 = Cassini+ 0.2u
+ *
+ * vendor id: 0x100b (National Semiconductor)
+ * device id: 0x0035 (DP83065/Saturn)
+ * revision ids: 0x30 = Saturn B2
+ *
+ * rings are all offset from 0.
+ *
+ * there are two clock domains:
+ * PCI:  33/66MHz clock
+ * chip: 125MHz clock
+ */
+
+#ifndef _CASSINI_H
+#define _CASSINI_H
+
+/* cassini register map: 2M memory mapped in 32-bit memory space accessible as
+ * 32-bit words. there is no i/o port access. REG_ addresses are
+ * shared between cassini and cassini+. REG_PLUS_ addresses only
+ * appear in cassini+. REG_MINUS_ addresses only appear in cassini.
+ */
+#define CAS_ID_REV2          0x02
+#define CAS_ID_REVPLUS       0x10
+#define CAS_ID_REVPLUS02u    0x11
+#define CAS_ID_REVSATURNB2   0x30
+
+/** global resources **/
+
+/* this register sets the weights for the weighted round robin arbiter. e.g.,
+ * if rx weight == 1 and tx weight == 0, rx == 2x tx transfer credit
+ * for its next turn to access the pci bus.
+ * map: 0x0 = x1, 0x1 = x2, 0x2 = x4, 0x3 = x8
+ * DEFAULT: 0x0, SIZE: 5 bits
+ */
+#define  REG_CAWR	               0x0004  /* core arbitration weight */
+#define    CAWR_RX_DMA_WEIGHT_SHIFT    0
+#define    CAWR_RX_DMA_WEIGHT_MASK     0x03    /* [0:1] */
+#define    CAWR_TX_DMA_WEIGHT_SHIFT    2
+#define    CAWR_TX_DMA_WEIGHT_MASK     0x0C    /* [3:2] */
+#define    CAWR_RR_DIS                 0x10    /* [4] */
+
+/* if enabled, BIM can send bursts across PCI bus > cacheline size. burst
+ * sizes determined by length of packet or descriptor transfer and the
+ * max length allowed by the target.
+ * DEFAULT: 0x0, SIZE: 1 bit
+ */
+#define  REG_INF_BURST                 0x0008  /* infinite burst enable reg */
+#define    INF_BURST_EN                0x1     /* enable */
+
+/* top level interrupts [0-9] are auto-cleared to 0 when the status
+ * register is read. second level interrupts [13 - 18] are cleared at
+ * the source. tx completion register 3 is replicated in [19 - 31]
+ * DEFAULT: 0x00000000, SIZE: 29 bits
+ */
+#define  REG_INTR_STATUS               0x000C  /* interrupt status register */
+#define    INTR_TX_INTME               0x00000001  /* frame w/ INT ME desc bit set
+						      xferred from host queue to
+						      TX FIFO */
+#define    INTR_TX_ALL                 0x00000002  /* all xmit frames xferred into
+						      TX FIFO. i.e.,
+						      TX Kick == TX complete. if
+						      PACED_MODE set, then TX FIFO
+						      also empty */
+#define    INTR_TX_DONE                0x00000004  /* any frame xferred into tx
+						      FIFO */
+#define    INTR_TX_TAG_ERROR           0x00000008  /* TX FIFO tag framing
+						      corrupted. FATAL ERROR */
+#define    INTR_RX_DONE                0x00000010  /* at least 1 frame xferred
+						      from RX FIFO to host mem.
+						      RX completion reg updated.
+						      may be delayed by recv
+						      intr blanking. */
+#define    INTR_RX_BUF_UNAVAIL         0x00000020  /* no more receive buffers.
+						      RX Kick == RX complete */
+#define    INTR_RX_TAG_ERROR           0x00000040  /* RX FIFO tag framing
+						      corrupted. FATAL ERROR */
+#define    INTR_RX_COMP_FULL           0x00000080  /* no more room in completion
+						      ring to post descriptors.
+						      RX complete head incr to
+						      almost reach RX complete
+						      tail */
+#define    INTR_RX_BUF_AE              0x00000100  /* less than the
+						      programmable threshold #
+						      of free descr avail for
+						      hw use */
+#define    INTR_RX_COMP_AF             0x00000200  /* less than the
+						      programmable threshold #
+						      of descr spaces for hw
+						      use in completion descr
+						      ring */
+#define    INTR_RX_LEN_MISMATCH        0x00000400  /* len field from MAC !=
+						      len of non-reassembly pkt
+						      from fifo during DMA or
+						      header parser provides TCP
+						      header and payload size >
+						      MAC packet size.
+						      FATAL ERROR */
+#define    INTR_SUMMARY                0x00001000  /* summary interrupt bit. this
+						      bit will be set if an interrupt
+						      generated on the pci bus. useful
+						      when driver is polling for
+						      interrupts */
+#define    INTR_PCS_STATUS             0x00002000  /* PCS interrupt status register */
+#define    INTR_TX_MAC_STATUS          0x00004000  /* TX MAC status register has at
+						      least 1 unmasked interrupt set */
+#define    INTR_RX_MAC_STATUS          0x00008000  /* RX MAC status register has at
+						      least 1 unmasked interrupt set */
+#define    INTR_MAC_CTRL_STATUS        0x00010000  /* MAC control status register has
+						      at least 1 unmasked interrupt
+						      set */
+#define    INTR_MIF_STATUS             0x00020000  /* MIF status register has at least
+						      1 unmasked interrupt set */
+#define    INTR_PCI_ERROR_STATUS       0x00040000  /* PCI error status register in the
+						      BIF has at least 1 unmasked
+						      interrupt set */
+#define    INTR_TX_COMP_3_MASK         0xFFF80000  /* mask for TX completion
+						      3 reg data */
+#define    INTR_TX_COMP_3_SHIFT        19
+#define    INTR_ERROR_MASK (INTR_MIF_STATUS | INTR_PCI_ERROR_STATUS | \
+                            INTR_PCS_STATUS | INTR_RX_LEN_MISMATCH | \
+                            INTR_TX_MAC_STATUS | INTR_RX_MAC_STATUS | \
+                            INTR_TX_TAG_ERROR | INTR_RX_TAG_ERROR | \
+                            INTR_MAC_CTRL_STATUS)
+
+/* determines which status events will cause an interrupt. layout same
+ * as REG_INTR_STATUS.
+ * DEFAULT: 0xFFFFFFFF, SIZE: 16 bits
+ */
+#define  REG_INTR_MASK                 0x0010  /* Interrupt mask */
+
+/* top level interrupt bits that are cleared during read of REG_INTR_STATUS_ALIAS.
+ * useful when driver is polling for interrupts. layout same as REG_INTR_MASK.
+ * DEFAULT: 0x00000000, SIZE: 12 bits
+ */
+#define  REG_ALIAS_CLEAR               0x0014  /* alias clear mask
+						  (used w/ status alias) */
+/* same as REG_INTR_STATUS except that only bits cleared are those selected by
+ * REG_ALIAS_CLEAR
+ * DEFAULT: 0x00000000, SIZE: 29 bits
+ */
+#define  REG_INTR_STATUS_ALIAS         0x001C  /* interrupt status alias
+						  (selective clear) */
+
+/* DEFAULT: 0x0, SIZE: 3 bits */
+#define  REG_PCI_ERR_STATUS            0x1000  /* PCI error status */
+#define    PCI_ERR_BADACK              0x01    /* reserved in Cassini+.
+						  set if no ACK64# during ABS64 cycle
+						  in Cassini. */
+#define    PCI_ERR_DTRTO               0x02    /* delayed xaction timeout. set if
+						  no read retry after 2^15 clocks */
+#define    PCI_ERR_OTHER               0x04    /* other PCI errors */
+#define    PCI_ERR_BIM_DMA_WRITE       0x08    /* BIM received 0 count DMA write req.
+						  unused in Cassini. */
+#define    PCI_ERR_BIM_DMA_READ        0x10    /* BIM received 0 count DMA read req.
+						  unused in Cassini. */
+#define    PCI_ERR_BIM_DMA_TIMEOUT     0x20    /* BIM received 255 retries during
+						  DMA. unused in cassini. */
+
+/* mask for PCI status events that will set PCI_ERR_STATUS. if cleared, event
+ * causes an interrupt to be generated.
+ * DEFAULT: 0x7, SIZE: 3 bits
+ */
+#define  REG_PCI_ERR_STATUS_MASK       0x1004  /* PCI Error status mask */
+
+/* used to configure PCI related parameters that are not in PCI config space.
+ * DEFAULT: 0bxx000, SIZE: 5 bits
+ */
+#define  REG_BIM_CFG                0x1008  /* BIM Configuration */
+#define    BIM_CFG_RESERVED0        0x001   /* reserved */
+#define    BIM_CFG_RESERVED1        0x002   /* reserved */
+#define    BIM_CFG_64BIT_DISABLE    0x004   /* disable 64-bit mode */
+#define    BIM_CFG_66MHZ            0x008   /* (ro) 1 = 66MHz, 0 = < 66MHz */
+#define    BIM_CFG_32BIT            0x010   /* (ro) 1 = 32-bit slot, 0 = 64-bit */
+#define    BIM_CFG_DPAR_INTR_ENABLE 0x020   /* detected parity err enable */
+#define    BIM_CFG_RMA_INTR_ENABLE  0x040   /* master abort intr enable */
+#define    BIM_CFG_RTA_INTR_ENABLE  0x080   /* target abort intr enable */
+#define    BIM_CFG_RESERVED2        0x100   /* reserved */
+#define    BIM_CFG_BIM_DISABLE      0x200   /* stop BIM DMA. use before global
+					       reset. reserved in Cassini. */
+#define    BIM_CFG_BIM_STATUS       0x400   /* (ro) 1 = BIM DMA suspended.
+						  reserved in Cassini. */
+#define    BIM_CFG_PERROR_BLOCK     0x800  /* block PERR# to pci bus. def: 0.
+						 reserved in Cassini. */
+
+/* DEFAULT: 0x00000000, SIZE: 32 bits */
+#define  REG_BIM_DIAG                  0x100C  /* BIM Diagnostic */
+#define    BIM_DIAG_MSTR_SM_MASK       0x3FFFFF00 /* PCI master controller state
+						     machine bits [21:0] */
+#define    BIM_DIAG_BRST_SM_MASK       0x7F    /* PCI burst controller state
+						  machine bits [6:0] */
+
+/* writing to SW_RESET_TX and SW_RESET_RX will issue a global
+ * reset. poll until TX and RX read back as 0's for completion.
+ */
+#define  REG_SW_RESET                  0x1010  /* Software reset */
+#define    SW_RESET_TX                 0x00000001  /* reset TX DMA engine. poll until
+						      cleared to 0.  */
+#define    SW_RESET_RX                 0x00000002  /* reset RX DMA engine. poll until
+						      cleared to 0. */
+#define    SW_RESET_RSTOUT             0x00000004  /* force RSTOUT# pin active (low).
+						      resets PHY and anything else
+						      connected to RSTOUT#. RSTOUT#
+						      is also activated by local PCI
+						      reset when hot-swap is being
+						      done. */
+#define    SW_RESET_BLOCK_PCS_SLINK    0x00000008  /* if a global reset is done with
+						      this bit set, PCS and SLINK
+						      modules won't be reset.
+						      i.e., link won't drop. */
+#define    SW_RESET_BREQ_SM_MASK       0x00007F00  /* breq state machine [6:0] */
+#define    SW_RESET_PCIARB_SM_MASK     0x00070000  /* pci arbitration state bits:
+						      0b000: ARB_IDLE1
+						      0b001: ARB_IDLE2
+						      0b010: ARB_WB_ACK
+						      0b011: ARB_WB_WAT
+						      0b100: ARB_RB_ACK
+						      0b101: ARB_RB_WAT
+						      0b110: ARB_RB_END
+						      0b111: ARB_WB_END */
+#define    SW_RESET_RDPCI_SM_MASK      0x00300000  /* read pci state bits:
+						      0b00: RD_PCI_WAT
+						      0b01: RD_PCI_RDY
+						      0b11: RD_PCI_ACK */
+#define    SW_RESET_RDARB_SM_MASK      0x00C00000  /* read arbitration state bits:
+						      0b00: AD_IDL_RX
+						      0b01: AD_ACK_RX
+						      0b10: AD_ACK_TX
+						      0b11: AD_IDL_TX */
+#define    SW_RESET_WRPCI_SM_MASK      0x06000000  /* write pci state bits
+						      0b00: WR_PCI_WAT
+						      0b01: WR_PCI_RDY
+						      0b11: WR_PCI_ACK */
+#define    SW_RESET_WRARB_SM_MASK      0x38000000  /* write arbitration state bits:
+						      0b000: ARB_IDLE1
+						      0b001: ARB_IDLE2
+						      0b010: ARB_TX_ACK
+						      0b011: ARB_TX_WAT
+						      0b100: ARB_RX_ACK
+						      0b110: ARB_RX_WAT */
+
+/* Cassini only. 64-bit register used to check PCI datapath. when read,
+ * value written has both lower and upper 32-bit halves rotated to the right
+ * one bit position. e.g., FFFFFFFF FFFFFFFF -> 7FFFFFFF 7FFFFFFF
+ */
+#define  REG_MINUS_BIM_DATAPATH_TEST   0x1018  /* Cassini: BIM datapath test
+						  Cassini+: reserved */
+
+/* output enables are provided for each device's chip select and for the rest
+ * of the outputs from cassini to its local bus devices. two sw programmable
+ * bits are connected to general purpus control/status bits.
+ * DEFAULT: 0x7
+ */
+#define  REG_BIM_LOCAL_DEV_EN          0x1020  /* BIM local device
+						  output EN. default: 0x7 */
+#define    BIM_LOCAL_DEV_PAD           0x01    /* address bus, RW signal, and
+						  OE signal output enable on the
+						  local bus interface. these
+						  are shared between both local
+						  bus devices. tristate when 0. */
+#define    BIM_LOCAL_DEV_PROM          0x02    /* PROM chip select */
+#define    BIM_LOCAL_DEV_EXT           0x04    /* secondary local bus device chip
+						  select output enable */
+#define    BIM_LOCAL_DEV_SOFT_0        0x08    /* sw programmable ctrl bit 0 */
+#define    BIM_LOCAL_DEV_SOFT_1        0x10    /* sw programmable ctrl bit 1 */
+#define    BIM_LOCAL_DEV_HW_RESET      0x20    /* internal hw reset. Cassini+ only. */
+
+/* access 24 entry BIM read and write buffers. put address in REG_BIM_BUFFER_ADDR
+ * and read/write from/to it REG_BIM_BUFFER_DATA_LOW and _DATA_HI.
+ * _DATA_HI should be the last access of the sequence.
+ * DEFAULT: undefined
+ */
+#define  REG_BIM_BUFFER_ADDR           0x1024  /* BIM buffer address. for
+						  purposes. */
+#define    BIM_BUFFER_ADDR_MASK        0x3F    /* index (0 - 23) of buffer  */
+#define    BIM_BUFFER_WR_SELECT        0x40    /* write buffer access = 1
+						  read buffer access = 0 */
+/* DEFAULT: undefined */
+#define  REG_BIM_BUFFER_DATA_LOW       0x1028  /* BIM buffer data low */
+#define  REG_BIM_BUFFER_DATA_HI        0x102C  /* BIM buffer data high */
+
+/* set BIM_RAM_BIST_START to start built-in self test for BIM read buffer.
+ * bit auto-clears when done with status read from _SUMMARY and _PASS bits.
+ */
+#define  REG_BIM_RAM_BIST              0x102C  /* BIM RAM (read buffer) BIST
+						  control/status */
+#define    BIM_RAM_BIST_RD_START       0x01    /* start BIST for BIM read buffer */
+#define    BIM_RAM_BIST_WR_START       0x02    /* start BIST for BIM write buffer.
+						  Cassini only. reserved in
+						  Cassini+. */
+#define    BIM_RAM_BIST_RD_PASS        0x04    /* summary BIST pass status for read
+						  buffer. */
+#define    BIM_RAM_BIST_WR_PASS        0x08    /* summary BIST pass status for write
+						  buffer. Cassini only. reserved
+						  in Cassini+. */
+#define    BIM_RAM_BIST_RD_LOW_PASS    0x10    /* read low bank passes BIST */
+#define    BIM_RAM_BIST_RD_HI_PASS     0x20    /* read high bank passes BIST */
+#define    BIM_RAM_BIST_WR_LOW_PASS    0x40    /* write low bank passes BIST.
+						  Cassini only. reserved in
+						  Cassini+. */
+#define    BIM_RAM_BIST_WR_HI_PASS     0x80    /* write high bank passes BIST.
+						  Cassini only. reserved in
+						  Cassini+. */
+
+/* ASUN: i'm not sure what this does as it's not in the spec.
+ * DEFAULT: 0xFC
+ */
+#define  REG_BIM_DIAG_MUX              0x1030  /* BIM diagnostic probe mux
+						  select register */
+
+/* enable probe monitoring mode and select data appearing on the P_A* bus. bit
+ * values for _SEL_HI_MASK and _SEL_LOW_MASK:
+ * 0x0: internal probe[7:0] (pci arb state, wtc empty w, wtc full w, wtc empty w,
+ *                           wtc empty r, post pci)
+ * 0x1: internal probe[15:8] (pci wbuf comp, pci wpkt comp, pci rbuf comp,
+ *                            pci rpkt comp, txdma wr req, txdma wr ack,
+ *			      txdma wr rdy, txdma wr xfr done)
+ * 0x2: internal probe[23:16] (txdma rd req, txdma rd ack, txdma rd rdy, rxdma rd,
+ *                             rd arb state, rd pci state)
+ * 0x3: internal probe[31:24] (rxdma req, rxdma ack, rxdma rdy, wrarb state,
+ *                             wrpci state)
+ * 0x4: pci io probe[7:0]     0x5: pci io probe[15:8]
+ * 0x6: pci io probe[23:16]   0x7: pci io probe[31:24]
+ * 0x8: pci io probe[39:32]   0x9: pci io probe[47:40]
+ * 0xa: pci io probe[55:48]   0xb: pci io probe[63:56]
+ * the following are not available in Cassini:
+ * 0xc: rx probe[7:0]         0xd: tx probe[7:0]
+ * 0xe: hp probe[7:0] 	      0xf: mac probe[7:0]
+ */
+#define  REG_PLUS_PROBE_MUX_SELECT     0x1034 /* Cassini+: PROBE MUX SELECT */
+#define    PROBE_MUX_EN                0x80000000 /* allow probe signals to be
+						     driven on local bus P_A[15:0]
+						     for debugging */
+#define    PROBE_MUX_SUB_MUX_MASK      0x0000FF00 /* select sub module probe signals:
+						     0x03 = mac[1:0]
+						     0x0C = rx[1:0]
+						     0x30 = tx[1:0]
+						     0xC0 = hp[1:0] */
+#define    PROBE_MUX_SEL_HI_MASK       0x000000F0 /* select which module to appear
+						     on P_A[15:8]. see above for
+						     values. */
+#define    PROBE_MUX_SEL_LOW_MASK      0x0000000F /* select which module to appear
+						     on P_A[7:0]. see above for
+						     values. */
+
+/* values mean the same thing as REG_INTR_MASK excep that it's for INTB.
+ DEFAULT: 0x1F */
+#define  REG_PLUS_INTR_MASK_1          0x1038 /* Cassini+: interrupt mask
+						 register 2 for INTB */
+#define  REG_PLUS_INTRN_MASK(x)       (REG_PLUS_INTR_MASK_1 + ((x) - 1)*16)
+/* bits correspond to both _MASK and _STATUS registers. _ALT corresponds to
+ * all of the alternate (2-4) INTR registers while _1 corresponds to only
+ * _MASK_1 and _STATUS_1 registers.
+ * DEFAULT: 0x7 for MASK registers, 0x0 for ALIAS_CLEAR registers
+ */
+#define    INTR_RX_DONE_ALT              0x01
+#define    INTR_RX_COMP_FULL_ALT         0x02
+#define    INTR_RX_COMP_AF_ALT           0x04
+#define    INTR_RX_BUF_UNAVAIL_1         0x08
+#define    INTR_RX_BUF_AE_1              0x10 /* almost empty */
+#define    INTRN_MASK_RX_EN              0x80
+#define    INTRN_MASK_CLEAR_ALL          (INTR_RX_DONE_ALT | \
+                                          INTR_RX_COMP_FULL_ALT | \
+                                          INTR_RX_COMP_AF_ALT | \
+                                          INTR_RX_BUF_UNAVAIL_1 | \
+                                          INTR_RX_BUF_AE_1)
+#define  REG_PLUS_INTR_STATUS_1        0x103C /* Cassini+: interrupt status
+						 register 2 for INTB. default: 0x1F */
+#define  REG_PLUS_INTRN_STATUS(x)       (REG_PLUS_INTR_STATUS_1 + ((x) - 1)*16)
+#define    INTR_STATUS_ALT_INTX_EN     0x80   /* generate INTX when one of the
+						 flags are set. enables desc ring. */
+
+#define  REG_PLUS_ALIAS_CLEAR_1        0x1040 /* Cassini+: alias clear mask
+						 register 2 for INTB */
+#define  REG_PLUS_ALIASN_CLEAR(x)      (REG_PLUS_ALIAS_CLEAR_1 + ((x) - 1)*16)
+
+#define  REG_PLUS_INTR_STATUS_ALIAS_1  0x1044 /* Cassini+: interrupt status
+						 register alias 2 for INTB */
+#define  REG_PLUS_INTRN_STATUS_ALIAS(x) (REG_PLUS_INTR_STATUS_ALIAS_1 + ((x) - 1)*16)
+
+#define REG_SATURN_PCFG               0x106c /* pin configuration register for
+						integrated macphy */
+
+#define   SATURN_PCFG_TLA             0x00000001 /* 1 = phy actled */
+#define   SATURN_PCFG_FLA             0x00000002 /* 1 = phy link10led */
+#define   SATURN_PCFG_CLA             0x00000004 /* 1 = phy link100led */
+#define   SATURN_PCFG_LLA             0x00000008 /* 1 = phy link1000led */
+#define   SATURN_PCFG_RLA             0x00000010 /* 1 = phy duplexled */
+#define   SATURN_PCFG_PDS             0x00000020 /* phy debug mode.
+						    0 = normal */
+#define   SATURN_PCFG_MTP             0x00000080 /* test point select */
+#define   SATURN_PCFG_GMO             0x00000100 /* GMII observe. 1 =
+						    GMII on SERDES pins for
+						    monitoring. */
+#define   SATURN_PCFG_FSI             0x00000200 /* 1 = freeze serdes/gmii. all
+						    pins configed as outputs.
+						    for power saving when using
+						    internal phy. */
+#define   SATURN_PCFG_LAD             0x00000800 /* 0 = mac core led ctrl
+						    polarity from strapping
+						    value.
+						    1 = mac core led ctrl
+						    polarity active low. */
+
+
+/** transmit dma registers **/
+#define MAX_TX_RINGS_SHIFT            2
+#define MAX_TX_RINGS                  (1 << MAX_TX_RINGS_SHIFT)
+#define MAX_TX_RINGS_MASK             (MAX_TX_RINGS - 1)
+
+/* TX configuration.
+ * descr ring sizes size = 32 * (1 << n), n < 9. e.g., 0x8 = 8k. default: 0x8
+ * DEFAULT: 0x3F000001
+ */
+#define  REG_TX_CFG                    0x2004  /* TX config */
+#define    TX_CFG_DMA_EN               0x00000001  /* enable TX DMA. if cleared, DMA
+						      will stop after xfer of current
+						      buffer has been completed. */
+#define    TX_CFG_FIFO_PIO_SEL         0x00000002  /* TX DMA FIFO can be
+						      accessed w/ FIFO addr
+						      and data registers.
+						      TX DMA should be
+						      disabled. */
+#define    TX_CFG_DESC_RING0_MASK      0x0000003C  /* # desc entries in
+						      ring 1. */
+#define    TX_CFG_DESC_RING0_SHIFT     2
+#define    TX_CFG_DESC_RINGN_MASK(a)   (TX_CFG_DESC_RING0_MASK << (a)*4)
+#define    TX_CFG_DESC_RINGN_SHIFT(a)  (TX_CFG_DESC_RING0_SHIFT + (a)*4)
+#define    TX_CFG_PACED_MODE           0x00100000  /* TX_ALL only set after
+						      TX FIFO becomes empty.
+						      if 0, TX_ALL set
+						      if descr queue empty. */
+#define    TX_CFG_DMA_RDPIPE_DIS       0x01000000  /* always set to 1 */
+#define    TX_CFG_COMPWB_Q1            0x02000000  /* completion writeback happens at
+						      the end of every packet kicked
+						      through Q1. */
+#define    TX_CFG_COMPWB_Q2            0x04000000  /* completion writeback happens at
+						      the end of every packet kicked
+						      through Q2. */
+#define    TX_CFG_COMPWB_Q3            0x08000000  /* completion writeback happens at
+						      the end of every packet kicked
+						      through Q3 */
+#define    TX_CFG_COMPWB_Q4            0x10000000  /* completion writeback happens at
+						      the end of every packet kicked
+						      through Q4 */
+#define    TX_CFG_INTR_COMPWB_DIS      0x20000000  /* disable pre-interrupt completion
+						      writeback */
+#define    TX_CFG_CTX_SEL_MASK         0xC0000000  /* selects tx test port
+						      connection
+						      0b00: tx mac req,
+						            tx mac retry req,
+							    tx ack and tx tag.
+						      0b01: txdma rd req,
+						            txdma rd ack,
+							    txdma rd rdy,
+							    txdma rd type0
+						      0b11: txdma wr req,
+						            txdma wr ack,
+							    txdma wr rdy,
+							    txdma wr xfr done. */
+#define    TX_CFG_CTX_SEL_SHIFT        30
+
+/* 11-bit counters that point to next location in FIFO to be loaded/retrieved.
+ * used for diagnostics only.
+ */
+#define  REG_TX_FIFO_WRITE_PTR         0x2014  /* TX FIFO write pointer */
+#define  REG_TX_FIFO_SHADOW_WRITE_PTR  0x2018  /* TX FIFO shadow write
+						  pointer. temp hold reg.
+					          diagnostics only. */
+#define  REG_TX_FIFO_READ_PTR          0x201C  /* TX FIFO read pointer */
+#define  REG_TX_FIFO_SHADOW_READ_PTR   0x2020  /* TX FIFO shadow read
+						  pointer */
+
+/* (ro) 11-bit up/down counter w/ # of frames currently in TX FIFO */
+#define  REG_TX_FIFO_PKT_CNT           0x2024  /* TX FIFO packet counter */
+
+/* current state of all state machines in TX */
+#define  REG_TX_SM_1                   0x2028  /* TX state machine reg #1 */
+#define    TX_SM_1_CHAIN_MASK          0x000003FF   /* chaining state machine */
+#define    TX_SM_1_CSUM_MASK           0x00000C00   /* checksum state machine */
+#define    TX_SM_1_FIFO_LOAD_MASK      0x0003F000   /* FIFO load state machine.
+						       = 0x01 when TX disabled. */
+#define    TX_SM_1_FIFO_UNLOAD_MASK    0x003C0000   /* FIFO unload state machine */
+#define    TX_SM_1_CACHE_MASK          0x03C00000   /* desc. prefetch cache controller
+						       state machine */
+#define    TX_SM_1_CBQ_ARB_MASK        0xF8000000   /* CBQ arbiter state machine */
+
+#define  REG_TX_SM_2                   0x202C  /* TX state machine reg #2 */
+#define    TX_SM_2_COMP_WB_MASK        0x07    /* completion writeback sm */
+#define	   TX_SM_2_SUB_LOAD_MASK       0x38    /* sub load state machine */
+#define	   TX_SM_2_KICK_MASK           0xC0    /* kick state machine */
+
+/* 64-bit pointer to the transmit data buffer. only the 50 LSB are incremented
+ * while the upper 23 bits are taken from the TX descriptor
+ */
+#define  REG_TX_DATA_PTR_LOW           0x2030  /* TX data pointer low */
+#define  REG_TX_DATA_PTR_HI            0x2034  /* TX data pointer high */
+
+/* 13 bit registers written by driver w/ descriptor value that follows
+ * last valid xmit descriptor. kick # and complete # values are used by
+ * the xmit dma engine to control tx descr fetching. if > 1 valid
+ * tx descr is available within the cache line being read, cassini will
+ * internally cache up to 4 of them. 0 on reset. _KICK = rw, _COMP = ro.
+ */
+#define  REG_TX_KICK0                  0x2038  /* TX kick reg #1 */
+#define  REG_TX_KICKN(x)               (REG_TX_KICK0 + (x)*4)
+#define  REG_TX_COMP0                  0x2048  /* TX completion reg #1 */
+#define  REG_TX_COMPN(x)               (REG_TX_COMP0 + (x)*4)
+
+/* values of TX_COMPLETE_1-4 are written. each completion register
+ * is 2bytes in size and contiguous. 8B allocation w/ 8B alignment.
+ * NOTE: completion reg values are only written back prior to TX_INTME and
+ * TX_ALL interrupts. at all other times, the most up-to-date index values
+ * should be obtained from the REG_TX_COMPLETE_# registers.
+ * here's the layout:
+ * offset from base addr      completion # byte
+ *           0                TX_COMPLETE_1_MSB
+ *	     1                TX_COMPLETE_1_LSB
+ *           2                TX_COMPLETE_2_MSB
+ *	     3                TX_COMPLETE_2_LSB
+ *           4                TX_COMPLETE_3_MSB
+ *	     5                TX_COMPLETE_3_LSB
+ *           6                TX_COMPLETE_4_MSB
+ *	     7                TX_COMPLETE_4_LSB
+ */
+#define  TX_COMPWB_SIZE             8
+#define  REG_TX_COMPWB_DB_LOW       0x2058  /* TX completion write back
+					       base low */
+#define  REG_TX_COMPWB_DB_HI        0x205C  /* TX completion write back
+					       base high */
+#define    TX_COMPWB_MSB_MASK       0x00000000000000FFULL
+#define    TX_COMPWB_MSB_SHIFT      0
+#define    TX_COMPWB_LSB_MASK       0x000000000000FF00ULL
+#define    TX_COMPWB_LSB_SHIFT      8
+#define    TX_COMPWB_NEXT(x)        ((x) >> 16)
+
+/* 53 MSB used as base address. 11 LSB assumed to be 0. TX desc pointer must
+ * be 2KB-aligned. */
+#define  REG_TX_DB0_LOW         0x2060  /* TX descriptor base low #1 */
+#define  REG_TX_DB0_HI          0x2064  /* TX descriptor base hi #1 */
+#define  REG_TX_DBN_LOW(x)      (REG_TX_DB0_LOW + (x)*8)
+#define  REG_TX_DBN_HI(x)       (REG_TX_DB0_HI + (x)*8)
+
+/* 16-bit registers hold weights for the weighted round-robin of the
+ * four CBQ TX descr rings. weights correspond to # bytes xferred from
+ * host to TXFIFO in a round of WRR arbitration. can be set
+ * dynamically with new weights set upon completion of the current
+ * packet transfer from host memory to TXFIFO. a dummy write to any of
+ * these registers causes a queue1 pre-emption with all historical bw
+ * deficit data reset to 0 (useful when congestion requires a
+ * pre-emption/re-allocation of network bandwidth
+ */
+#define  REG_TX_MAXBURST_0             0x2080  /* TX MaxBurst #1 */
+#define  REG_TX_MAXBURST_1             0x2084  /* TX MaxBurst #2 */
+#define  REG_TX_MAXBURST_2             0x2088  /* TX MaxBurst #3 */
+#define  REG_TX_MAXBURST_3             0x208C  /* TX MaxBurst #4 */
+
+/* diagnostics access to any TX FIFO location. every access is 65
+ * bits.  _DATA_LOW = 32 LSB, _DATA_HI_T1/T0 = 32 MSB. _TAG = tag bit.
+ * writing _DATA_HI_T0 sets tag bit low, writing _DATA_HI_T1 sets tag
+ * bit high.  TX_FIFO_PIO_SEL must be set for TX FIFO PIO access. if
+ * TX FIFO data integrity is desired, TX DMA should be
+ * disabled. _DATA_HI_Tx should be the last access of the sequence.
+ */
+#define  REG_TX_FIFO_ADDR              0x2104  /* TX FIFO address */
+#define  REG_TX_FIFO_TAG               0x2108  /* TX FIFO tag */
+#define  REG_TX_FIFO_DATA_LOW          0x210C  /* TX FIFO data low */
+#define  REG_TX_FIFO_DATA_HI_T1        0x2110  /* TX FIFO data high t1 */
+#define  REG_TX_FIFO_DATA_HI_T0        0x2114  /* TX FIFO data high t0 */
+#define  REG_TX_FIFO_SIZE              0x2118  /* (ro) TX FIFO size = 0x090 = 9KB */
+
+/* 9-bit register controls BIST of TX FIFO. bit set indicates that the BIST
+ * passed for the specified memory
+ */
+#define  REG_TX_RAMBIST                0x211C /* TX RAMBIST control/status */
+#define    TX_RAMBIST_STATE            0x01C0 /* progress state of RAMBIST
+						 controller state machine */
+#define    TX_RAMBIST_RAM33A_PASS      0x0020 /* RAM33A passed */
+#define    TX_RAMBIST_RAM32A_PASS      0x0010 /* RAM32A passed */
+#define    TX_RAMBIST_RAM33B_PASS      0x0008 /* RAM33B passed */
+#define    TX_RAMBIST_RAM32B_PASS      0x0004 /* RAM32B passed */
+#define    TX_RAMBIST_SUMMARY          0x0002 /* all RAM passed */
+#define    TX_RAMBIST_START            0x0001 /* write 1 to start BIST. self
+						 clears on completion. */
+
+/** receive dma registers **/
+#define MAX_RX_DESC_RINGS              2
+#define MAX_RX_COMP_RINGS              4
+
+/* receive DMA channel configuration. default: 0x80910
+ * free ring size       = (1 << n)*32  -> [32 - 8k]
+ * completion ring size = (1 << n)*128 -> [128 - 32k], n < 9
+ * DEFAULT: 0x80910
+ */
+#define  REG_RX_CFG                     0x4000  /* RX config */
+#define    RX_CFG_DMA_EN                0x00000001 /* enable RX DMA. 0 stops
+							 channel as soon as current
+							 frame xfer has completed.
+							 driver should disable MAC
+							 for 200ms before disabling
+							 RX */
+#define    RX_CFG_DESC_RING_MASK        0x0000001E /* # desc entries in RX
+							 free desc ring.
+							 def: 0x8 = 8k */
+#define    RX_CFG_DESC_RING_SHIFT       1
+#define    RX_CFG_COMP_RING_MASK        0x000001E0 /* # desc entries in RX complete
+							 ring. def: 0x8 = 32k */
+#define    RX_CFG_COMP_RING_SHIFT       5
+#define    RX_CFG_BATCH_DIS             0x00000200 /* disable receive desc
+						      batching. def: 0x0 =
+						      enabled */
+#define    RX_CFG_SWIVEL_MASK           0x00001C00 /* byte offset of the 1st
+						      data byte of the packet
+						      w/in 8 byte boundares.
+						      this swivels the data
+						      DMA'ed to header
+						      buffers, jumbo buffers
+						      when header split is not
+						      requested and MTU sized
+						      buffers. def: 0x2 */
+#define    RX_CFG_SWIVEL_SHIFT          10
+
+/* cassini+ only */
+#define    RX_CFG_DESC_RING1_MASK       0x000F0000 /* # of desc entries in
+							 RX free desc ring 2.
+							 def: 0x8 = 8k */
+#define    RX_CFG_DESC_RING1_SHIFT      16
+
+
+/* the page size register allows cassini chips to do the following with
+ * received data:
+ * [--------------------------------------------------------------] page
+ * [off][buf1][pad][off][buf2][pad][off][buf3][pad][off][buf4][pad]
+ * |--------------| = PAGE_SIZE_BUFFER_STRIDE
+ * page = PAGE_SIZE
+ * offset = PAGE_SIZE_MTU_OFF
+ * for the above example, MTU_BUFFER_COUNT = 4.
+ * NOTE: as is apparent, you need to ensure that the following holds:
+ * MTU_BUFFER_COUNT <= PAGE_SIZE/PAGE_SIZE_BUFFER_STRIDE
+ * DEFAULT: 0x48002002 (8k pages)
+ */
+#define  REG_RX_PAGE_SIZE               0x4004  /* RX page size */
+#define    RX_PAGE_SIZE_MASK            0x00000003 /* size of pages pointed to
+						      by receive descriptors.
+						      if jumbo buffers are
+						      supported the page size
+						      should not be < 8k.
+						      0b00 = 2k, 0b01 = 4k
+						      0b10 = 8k, 0b11 = 16k
+						      DEFAULT: 8k */
+#define    RX_PAGE_SIZE_SHIFT           0
+#define    RX_PAGE_SIZE_MTU_COUNT_MASK  0x00007800 /* # of MTU buffers the hw
+						      packs into a page.
+						      DEFAULT: 4 */
+#define    RX_PAGE_SIZE_MTU_COUNT_SHIFT 11
+#define    RX_PAGE_SIZE_MTU_STRIDE_MASK 0x18000000 /* # of bytes that separate
+							 each MTU buffer +
+							 offset from each
+							 other.
+							 0b00 = 1k, 0b01 = 2k
+							 0b10 = 4k, 0b11 = 8k
+							 DEFAULT: 0x1 */
+#define    RX_PAGE_SIZE_MTU_STRIDE_SHIFT 27
+#define    RX_PAGE_SIZE_MTU_OFF_MASK    0xC0000000 /* offset in each page that
+						      hw writes the MTU buffer
+						      into.
+						      0b00 = 0,
+						      0b01 = 64 bytes
+						      0b10 = 96, 0b11 = 128
+						      DEFAULT: 0x1 */
+#define    RX_PAGE_SIZE_MTU_OFF_SHIFT   30
+
+/* 11-bit counter points to next location in RX FIFO to be loaded/read.
+ * shadow write pointers enable retries in case of early receive aborts.
+ * DEFAULT: 0x0. generated on 64-bit boundaries.
+ */
+#define  REG_RX_FIFO_WRITE_PTR             0x4008  /* RX FIFO write pointer */
+#define  REG_RX_FIFO_READ_PTR              0x400C  /* RX FIFO read pointer */
+#define  REG_RX_IPP_FIFO_SHADOW_WRITE_PTR  0x4010  /* RX IPP FIFO shadow write
+						      pointer */
+#define  REG_RX_IPP_FIFO_SHADOW_READ_PTR   0x4014  /* RX IPP FIFO shadow read
+						      pointer */
+#define  REG_RX_IPP_FIFO_READ_PTR          0x400C  /* RX IPP FIFO read
+						      pointer. (8-bit counter) */
+
+/* current state of RX DMA state engines + other info
+ * DEFAULT: 0x0
+ */
+#define  REG_RX_DEBUG                      0x401C  /* RX debug */
+#define    RX_DEBUG_LOAD_STATE_MASK        0x0000000F /* load state machine w/ MAC:
+							 0x0 = idle,   0x1 = load_bop
+							 0x2 = load 1, 0x3 = load 2
+							 0x4 = load 3, 0x5 = load 4
+							 0x6 = last detect
+							 0x7 = wait req
+							 0x8 = wait req statuss 1st
+							 0x9 = load st
+							 0xa = bubble mac
+							 0xb = error */
+#define    RX_DEBUG_LM_STATE_MASK          0x00000070 /* load state machine w/ HP and
+							 RX FIFO:
+							 0x0 = idle,   0x1 = hp xfr
+							 0x2 = wait hp ready
+							 0x3 = wait flow code
+							 0x4 = fifo xfer
+							 0x5 = make status
+							 0x6 = csum ready
+							 0x7 = error */
+#define    RX_DEBUG_FC_STATE_MASK          0x000000180 /* flow control state machine
+							 w/ MAC:
+							 0x0 = idle
+							 0x1 = wait xoff ack
+							 0x2 = wait xon
+							 0x3 = wait xon ack */
+#define    RX_DEBUG_DATA_STATE_MASK        0x000001E00 /* unload data state machine
+							 states:
+							 0x0 = idle data
+							 0x1 = header begin
+							 0x2 = xfer header
+							 0x3 = xfer header ld
+							 0x4 = mtu begin
+							 0x5 = xfer mtu
+							 0x6 = xfer mtu ld
+							 0x7 = jumbo begin
+							 0x8 = xfer jumbo
+							 0x9 = xfer jumbo ld
+							 0xa = reas begin
+							 0xb = xfer reas
+							 0xc = flush tag
+							 0xd = xfer reas ld
+							 0xe = error
+							 0xf = bubble idle */
+#define    RX_DEBUG_DESC_STATE_MASK        0x0001E000 /* unload desc state machine
+							 states:
+							 0x0 = idle desc
+							 0x1 = wait ack
+							 0x9 = wait ack 2
+							 0x2 = fetch desc 1
+							 0xa = fetch desc 2
+							 0x3 = load ptrs
+							 0x4 = wait dma
+							 0x5 = wait ack batch
+							 0x6 = post batch
+							 0x7 = xfr done */
+#define    RX_DEBUG_INTR_READ_PTR_MASK     0x30000000 /* interrupt read ptr of the
+							 interrupt queue */
+#define    RX_DEBUG_INTR_WRITE_PTR_MASK    0xC0000000 /* interrupt write pointer
+							 of the interrupt queue */
+
+/* flow control frames are emitted using two PAUSE thresholds:
+ * XOFF PAUSE uses pause time value pre-programmed in the Send PAUSE MAC reg
+ * XON PAUSE uses a pause time of 0. granularity of threshold is 64bytes.
+ * PAUSE thresholds defined in terms of FIFO occupancy and may be translated
+ * into FIFO vacancy using RX_FIFO_SIZE. setting ON will trigger XON frames
+ * when FIFO reaches 0. OFF threshold should not be > size of RX FIFO. max
+ * value is is 0x6F.
+ * DEFAULT: 0x00078
+ */
+#define  REG_RX_PAUSE_THRESH               0x4020  /* RX pause thresholds */
+#define    RX_PAUSE_THRESH_QUANTUM         64
+#define    RX_PAUSE_THRESH_OFF_MASK        0x000001FF /* XOFF PAUSE emitted when
+							 RX FIFO occupancy >
+							 value*64B */
+#define    RX_PAUSE_THRESH_OFF_SHIFT       0
+#define    RX_PAUSE_THRESH_ON_MASK         0x001FF000 /* XON PAUSE emitted after
+							 emitting XOFF PAUSE when RX
+							 FIFO occupancy falls below
+							 this value*64B. must be
+							 < XOFF threshold. if =
+							 RX_FIFO_SIZE< XON frames are
+							 never emitted. */
+#define    RX_PAUSE_THRESH_ON_SHIFT        12
+
+/* 13-bit register used to control RX desc fetching and intr generation. if 4+
+ * valid RX descriptors are available, Cassini will read 4 at a time.
+ * writing N means that all desc up to *but* excluding N are available. N must
+ * be a multiple of 4 (N % 4 = 0). first desc should be cache-line aligned.
+ * DEFAULT: 0 on reset
+ */
+#define  REG_RX_KICK                    0x4024  /* RX kick reg */
+
+/* 8KB aligned 64-bit pointer to the base of the RX free/completion rings.
+ * lower 13 bits of the low register are hard-wired to 0.
+ */
+#define  REG_RX_DB_LOW                     0x4028  /* RX descriptor ring
+							 base low */
+#define  REG_RX_DB_HI                      0x402C  /* RX descriptor ring
+							 base hi */
+#define  REG_RX_CB_LOW                     0x4030  /* RX completion ring
+							 base low */
+#define  REG_RX_CB_HI                      0x4034  /* RX completion ring
+							 base hi */
+/* 13-bit register indicate desc used by cassini for receive frames. used
+ * for diagnostic purposes.
+ * DEFAULT: 0 on reset
+ */
+#define  REG_RX_COMP                       0x4038  /* (ro) RX completion */
+
+/* HEAD and TAIL are used to control RX desc posting and interrupt
+ * generation.  hw moves the head register to pass ownership to sw. sw
+ * moves the tail register to pass ownership back to hw. to give all
+ * entries to hw, set TAIL = HEAD.  if HEAD and TAIL indicate that no
+ * more entries are available, DMA will pause and an interrupt will be
+ * generated to indicate no more entries are available.  sw can use
+ * this interrupt to reduce the # of times it must update the
+ * completion tail register.
+ * DEFAULT: 0 on reset
+ */
+#define  REG_RX_COMP_HEAD                  0x403C  /* RX completion head */
+#define  REG_RX_COMP_TAIL                  0x4040  /* RX completion tail */
+
+/* values used for receive interrupt blanking. loaded each time the ISR is read
+ * DEFAULT: 0x00000000
+ */
+#define  REG_RX_BLANK                      0x4044  /* RX blanking register
+							 for ISR read */
+#define    RX_BLANK_INTR_PKT_MASK          0x000001FF /* RX_DONE intr asserted if
+							 this many sets of completion
+							 writebacks (up to 2 packets)
+							 occur since the last time
+							 the ISR was read. 0 = no
+							 packet blanking */
+#define    RX_BLANK_INTR_PKT_SHIFT         0
+#define    RX_BLANK_INTR_TIME_MASK         0x3FFFF000 /* RX_DONE interrupt asserted
+							 if that many clocks were
+							 counted since last time the
+							 ISR was read.
+							 each count is 512 core
+							 clocks (125MHz). 0 = no
+							 time blanking */
+#define    RX_BLANK_INTR_TIME_SHIFT        12
+
+/* values used for interrupt generation based on threshold values of how
+ * many free desc and completion entries are available for hw use.
+ * DEFAULT: 0x00000000
+ */
+#define  REG_RX_AE_THRESH                  0x4048  /* RX almost empty
+							 thresholds */
+#define    RX_AE_THRESH_FREE_MASK          0x00001FFF /* RX_BUF_AE will be
+							 generated if # desc
+							 avail for hw use <=
+							 # */
+#define    RX_AE_THRESH_FREE_SHIFT         0
+#define    RX_AE_THRESH_COMP_MASK          0x0FFFE000 /* RX_COMP_AE will be
+							 generated if # of
+							 completion entries
+							 avail for hw use <=
+							 # */
+#define    RX_AE_THRESH_COMP_SHIFT         13
+
+/* probabilities for random early drop (RED) thresholds on a FIFO threshold
+ * basis. probability should increase when the FIFO level increases. control
+ * packets are never dropped and not counted in stats. probability programmed
+ * on a 12.5% granularity. e.g., 0x1 = 1/8 packets dropped.
+ * DEFAULT: 0x00000000
+ */
+#define  REG_RX_RED                      0x404C  /* RX random early detect enable */
+#define    RX_RED_4K_6K_FIFO_MASK        0x000000FF /*  4KB < FIFO thresh < 6KB */
+#define    RX_RED_6K_8K_FIFO_MASK        0x0000FF00 /*  6KB < FIFO thresh < 8KB */
+#define    RX_RED_8K_10K_FIFO_MASK       0x00FF0000 /*  8KB < FIFO thresh < 10KB */
+#define    RX_RED_10K_12K_FIFO_MASK      0xFF000000 /* 10KB < FIFO thresh < 12KB */
+
+/* FIFO fullness levels for RX FIFO, RX control FIFO, and RX IPP FIFO.
+ * RX control FIFO = # of packets in RX FIFO.
+ * DEFAULT: 0x0
+ */
+#define  REG_RX_FIFO_FULLNESS              0x4050  /* (ro) RX FIFO fullness */
+#define    RX_FIFO_FULLNESS_RX_FIFO_MASK   0x3FF80000 /* level w/ 8B granularity */
+#define    RX_FIFO_FULLNESS_IPP_FIFO_MASK  0x0007FF00 /* level w/ 8B granularity */
+#define    RX_FIFO_FULLNESS_RX_PKT_MASK    0x000000FF /* # packets in RX FIFO */
+#define  REG_RX_IPP_PACKET_COUNT           0x4054  /* RX IPP packet counter */
+#define  REG_RX_WORK_DMA_PTR_LOW           0x4058  /* RX working DMA ptr low */
+#define  REG_RX_WORK_DMA_PTR_HI            0x405C  /* RX working DMA ptr
+						      high */
+
+/* BIST testing ro RX FIFO, RX control FIFO, and RX IPP FIFO. only RX BIST
+ * START/COMPLETE is writeable. START will clear when the BIST has completed
+ * checking all 17 RAMS.
+ * DEFAULT: 0bxxxx xxxxx xxxx xxxx xxxx x000 0000 0000 00x0
+ */
+#define  REG_RX_BIST                       0x4060  /* (ro) RX BIST */
+#define    RX_BIST_32A_PASS                0x80000000 /* RX FIFO 32A passed */
+#define    RX_BIST_33A_PASS                0x40000000 /* RX FIFO 33A passed */
+#define    RX_BIST_32B_PASS                0x20000000 /* RX FIFO 32B passed */
+#define    RX_BIST_33B_PASS                0x10000000 /* RX FIFO 33B passed */
+#define    RX_BIST_32C_PASS                0x08000000 /* RX FIFO 32C passed */
+#define    RX_BIST_33C_PASS                0x04000000 /* RX FIFO 33C passed */
+#define    RX_BIST_IPP_32A_PASS            0x02000000 /* RX IPP FIFO 33B passed */
+#define    RX_BIST_IPP_33A_PASS            0x01000000 /* RX IPP FIFO 33A passed */
+#define    RX_BIST_IPP_32B_PASS            0x00800000 /* RX IPP FIFO 32B passed */
+#define    RX_BIST_IPP_33B_PASS            0x00400000 /* RX IPP FIFO 33B passed */
+#define    RX_BIST_IPP_32C_PASS            0x00200000 /* RX IPP FIFO 32C passed */
+#define    RX_BIST_IPP_33C_PASS            0x00100000 /* RX IPP FIFO 33C passed */
+#define    RX_BIST_CTRL_32_PASS            0x00800000 /* RX CTRL FIFO 32 passed */
+#define    RX_BIST_CTRL_33_PASS            0x00400000 /* RX CTRL FIFO 33 passed */
+#define    RX_BIST_REAS_26A_PASS           0x00200000 /* RX Reas 26A passed */
+#define    RX_BIST_REAS_26B_PASS           0x00100000 /* RX Reas 26B passed */
+#define    RX_BIST_REAS_27_PASS            0x00080000 /* RX Reas 27 passed */
+#define    RX_BIST_STATE_MASK              0x00078000 /* BIST state machine */
+#define    RX_BIST_SUMMARY                 0x00000002 /* when BIST complete,
+							 summary pass bit
+							 contains AND of BIST
+							 results of all 16
+							 RAMS */
+#define    RX_BIST_START                   0x00000001 /* write 1 to start
+							 BIST. self clears
+							 on completion. */
+
+/* next location in RX CTRL FIFO that will be loaded w/ data from RX IPP/read
+ * from to retrieve packet control info.
+ * DEFAULT: 0
+ */
+#define  REG_RX_CTRL_FIFO_WRITE_PTR        0x4064  /* (ro) RX control FIFO
+						      write ptr */
+#define  REG_RX_CTRL_FIFO_READ_PTR         0x4068  /* (ro) RX control FIFO read
+						      ptr */
+
+/* receive interrupt blanking. loaded each time interrupt alias register is
+ * read.
+ * DEFAULT: 0x0
+ */
+#define  REG_RX_BLANK_ALIAS_READ           0x406C  /* RX blanking register for
+						      alias read */
+#define    RX_BAR_INTR_PACKET_MASK         0x000001FF /* assert RX_DONE if #
+							 completion writebacks
+							 > # since last ISR
+							 read. 0 = no
+							 blanking. up to 2
+							 packets per
+							 completion wb. */
+#define    RX_BAR_INTR_TIME_MASK           0x3FFFF000 /* assert RX_DONE if #
+							 clocks > # since last
+							 ISR read. each count
+							 is 512 core clocks
+							 (125MHz). 0 = no
+							 blanking. */
+
+/* diagnostic access to RX FIFO. 32 LSB accessed via DATA_LOW. 32 MSB accessed
+ * via DATA_HI_T0 or DATA_HI_T1. TAG reads the tag bit. writing HI_T0
+ * will unset the tag bit while writing HI_T1 will set the tag bit. to reset
+ * to normal operation after diagnostics, write to address location 0x0.
+ * RX_DMA_EN bit must be set to 0x0 for RX FIFO PIO access. DATA_HI should
+ * be the last write access of a write sequence.
+ * DEFAULT: undefined
+ */
+#define  REG_RX_FIFO_ADDR                  0x4080  /* RX FIFO address */
+#define  REG_RX_FIFO_TAG                   0x4084  /* RX FIFO tag */
+#define  REG_RX_FIFO_DATA_LOW              0x4088  /* RX FIFO data low */
+#define  REG_RX_FIFO_DATA_HI_T0            0x408C  /* RX FIFO data high T0 */
+#define  REG_RX_FIFO_DATA_HI_T1            0x4090  /* RX FIFO data high T1 */
+
+/* diagnostic assess to RX CTRL FIFO. 8-bit FIFO_ADDR holds address of
+ * 81 bit control entry and 6 bit flow id. LOW and MID are both 32-bit
+ * accesses. HI is 7-bits with 6-bit flow id and 1 bit control
+ * word. RX_DMA_EN must be 0 for RX CTRL FIFO PIO access. DATA_HI
+ * should be last write access of the write sequence.
+ * DEFAULT: undefined
+ */
+#define  REG_RX_CTRL_FIFO_ADDR             0x4094  /* RX Control FIFO and
+						      Batching FIFO addr */
+#define  REG_RX_CTRL_FIFO_DATA_LOW         0x4098  /* RX Control FIFO data
+						      low */
+#define  REG_RX_CTRL_FIFO_DATA_MID         0x409C  /* RX Control FIFO data
+						      mid */
+#define  REG_RX_CTRL_FIFO_DATA_HI          0x4100  /* RX Control FIFO data
+						      hi and flow id */
+#define    RX_CTRL_FIFO_DATA_HI_CTRL       0x0001  /* upper bit of ctrl word */
+#define    RX_CTRL_FIFO_DATA_HI_FLOW_MASK  0x007E  /* flow id */
+
+/* diagnostic access to RX IPP FIFO. same semantics as RX_FIFO.
+ * DEFAULT: undefined
+ */
+#define  REG_RX_IPP_FIFO_ADDR              0x4104  /* RX IPP FIFO address */
+#define  REG_RX_IPP_FIFO_TAG               0x4108  /* RX IPP FIFO tag */
+#define  REG_RX_IPP_FIFO_DATA_LOW          0x410C  /* RX IPP FIFO data low */
+#define  REG_RX_IPP_FIFO_DATA_HI_T0        0x4110  /* RX IPP FIFO data high
+						      T0 */
+#define  REG_RX_IPP_FIFO_DATA_HI_T1        0x4114  /* RX IPP FIFO data high
+						      T1 */
+
+/* 64-bit pointer to receive data buffer in host memory used for headers and
+ * small packets. MSB in high register. loaded by DMA state machine and
+ * increments as DMA writes receive data. only 50 LSB are incremented. top
+ * 13 bits taken from RX descriptor.
+ * DEFAULT: undefined
+ */
+#define  REG_RX_HEADER_PAGE_PTR_LOW        0x4118  /* (ro) RX header page ptr
+						      low */
+#define  REG_RX_HEADER_PAGE_PTR_HI         0x411C  /* (ro) RX header page ptr
+						      high */
+#define  REG_RX_MTU_PAGE_PTR_LOW           0x4120  /* (ro) RX MTU page pointer
+						      low */
+#define  REG_RX_MTU_PAGE_PTR_HI            0x4124  /* (ro) RX MTU page pointer
+						      high */
+
+/* PIO diagnostic access to RX reassembly DMA Table RAM. 6-bit register holds
+ * one of 64 79-bit locations in the RX Reassembly DMA table and the addr of
+ * one of the 64 byte locations in the Batching table. LOW holds 32 LSB.
+ * MID holds the next 32 LSB. HIGH holds the 15 MSB. RX_DMA_EN must be set
+ * to 0 for PIO access. DATA_HIGH should be last write of write sequence.
+ * layout:
+ * reassmbl ptr [78:15] | reassmbl index [14:1] | reassmbl entry valid [0]
+ * DEFAULT: undefined
+ */
+#define  REG_RX_TABLE_ADDR             0x4128  /* RX reassembly DMA table
+						  address */
+#define    RX_TABLE_ADDR_MASK          0x0000003F /* address mask */
+
+#define  REG_RX_TABLE_DATA_LOW         0x412C  /* RX reassembly DMA table
+						  data low */
+#define  REG_RX_TABLE_DATA_MID         0x4130  /* RX reassembly DMA table
+						  data mid */
+#define  REG_RX_TABLE_DATA_HI          0x4134  /* RX reassembly DMA table
+						  data high */
+
+/* cassini+ only */
+/* 8KB aligned 64-bit pointer to base of RX rings. lower 13 bits hardwired to
+ * 0. same semantics as primary desc/complete rings.
+ */
+#define  REG_PLUS_RX_DB1_LOW            0x4200  /* RX descriptor ring
+						   2 base low */
+#define  REG_PLUS_RX_DB1_HI             0x4204  /* RX descriptor ring
+						   2 base high */
+#define  REG_PLUS_RX_CB1_LOW            0x4208  /* RX completion ring
+						   2 base low. 4 total */
+#define  REG_PLUS_RX_CB1_HI             0x420C  /* RX completion ring
+						   2 base high. 4 total */
+#define  REG_PLUS_RX_CBN_LOW(x)        (REG_PLUS_RX_CB1_LOW + 8*((x) - 1))
+#define  REG_PLUS_RX_CBN_HI(x)         (REG_PLUS_RX_CB1_HI + 8*((x) - 1))
+#define  REG_PLUS_RX_KICK1             0x4220  /* RX Kick 2 register */
+#define  REG_PLUS_RX_COMP1             0x4224  /* (ro) RX completion 2
+						  reg */
+#define  REG_PLUS_RX_COMP1_HEAD        0x4228  /* (ro) RX completion 2
+						  head reg. 4 total. */
+#define  REG_PLUS_RX_COMP1_TAIL        0x422C  /* RX completion 2
+						  tail reg. 4 total. */
+#define  REG_PLUS_RX_COMPN_HEAD(x)    (REG_PLUS_RX_COMP1_HEAD + 8*((x) - 1))
+#define  REG_PLUS_RX_COMPN_TAIL(x)    (REG_PLUS_RX_COMP1_TAIL + 8*((x) - 1))
+#define  REG_PLUS_RX_AE1_THRESH        0x4240  /* RX almost empty 2
+						  thresholds */
+#define    RX_AE1_THRESH_FREE_MASK     RX_AE_THRESH_FREE_MASK
+#define    RX_AE1_THRESH_FREE_SHIFT    RX_AE_THRESH_FREE_SHIFT
+
+/** header parser registers **/
+
+/* RX parser configuration register.
+ * DEFAULT: 0x1651004
+ */
+#define  REG_HP_CFG                       0x4140  /* header parser
+						     configuration reg */
+#define    HP_CFG_PARSE_EN                0x00000001 /* enab header parsing */
+#define    HP_CFG_NUM_CPU_MASK            0x000000FC /* # processors
+						      0 = 64. 0x3f = 63 */
+#define    HP_CFG_NUM_CPU_SHIFT           2
+#define    HP_CFG_SYN_INC_MASK            0x00000100 /* SYN bit won't increment
+							TCP seq # by one when
+							stored in FDBM */
+#define    HP_CFG_TCP_THRESH_MASK         0x000FFE00 /* # bytes of TCP data
+							needed to be considered
+							for reassembly */
+#define    HP_CFG_TCP_THRESH_SHIFT        9
+
+/* access to RX Instruction RAM. 5-bit register/counter holds addr
+ * of 39 bit entry to be read/written. 32 LSB in _DATA_LOW. 7 MSB in _DATA_HI.
+ * RX_DMA_EN must be 0 for RX instr PIO access. DATA_HI should be last access
+ * of sequence.
+ * DEFAULT: undefined
+ */
+#define  REG_HP_INSTR_RAM_ADDR             0x4144  /* HP instruction RAM
+						      address */
+#define    HP_INSTR_RAM_ADDR_MASK          0x01F   /* 5-bit mask */
+#define  REG_HP_INSTR_RAM_DATA_LOW         0x4148  /* HP instruction RAM
+						      data low */
+#define    HP_INSTR_RAM_LOW_OUTMASK_MASK   0x0000FFFF
+#define    HP_INSTR_RAM_LOW_OUTMASK_SHIFT  0
+#define    HP_INSTR_RAM_LOW_OUTSHIFT_MASK  0x000F0000
+#define    HP_INSTR_RAM_LOW_OUTSHIFT_SHIFT 16
+#define    HP_INSTR_RAM_LOW_OUTEN_MASK     0x00300000
+#define    HP_INSTR_RAM_LOW_OUTEN_SHIFT    20
+#define    HP_INSTR_RAM_LOW_OUTARG_MASK    0xFFC00000
+#define    HP_INSTR_RAM_LOW_OUTARG_SHIFT   22
+#define  REG_HP_INSTR_RAM_DATA_MID         0x414C  /* HP instruction RAM
+						      data mid */
+#define    HP_INSTR_RAM_MID_OUTARG_MASK    0x00000003
+#define    HP_INSTR_RAM_MID_OUTARG_SHIFT   0
+#define    HP_INSTR_RAM_MID_OUTOP_MASK     0x0000003C
+#define    HP_INSTR_RAM_MID_OUTOP_SHIFT    2
+#define    HP_INSTR_RAM_MID_FNEXT_MASK     0x000007C0
+#define    HP_INSTR_RAM_MID_FNEXT_SHIFT    6
+#define    HP_INSTR_RAM_MID_FOFF_MASK      0x0003F800
+#define    HP_INSTR_RAM_MID_FOFF_SHIFT     11
+#define    HP_INSTR_RAM_MID_SNEXT_MASK     0x007C0000
+#define    HP_INSTR_RAM_MID_SNEXT_SHIFT    18
+#define    HP_INSTR_RAM_MID_SOFF_MASK      0x3F800000
+#define    HP_INSTR_RAM_MID_SOFF_SHIFT     23
+#define    HP_INSTR_RAM_MID_OP_MASK        0xC0000000
+#define    HP_INSTR_RAM_MID_OP_SHIFT       30
+#define  REG_HP_INSTR_RAM_DATA_HI          0x4150  /* HP instruction RAM
+						      data high */
+#define    HP_INSTR_RAM_HI_VAL_MASK        0x0000FFFF
+#define    HP_INSTR_RAM_HI_VAL_SHIFT       0
+#define    HP_INSTR_RAM_HI_MASK_MASK       0xFFFF0000
+#define    HP_INSTR_RAM_HI_MASK_SHIFT      16
+
+/* PIO access into RX Header parser data RAM and flow database.
+ * 11-bit register. Data fills the LSB portion of bus if less than 32 bits.
+ * DATA_RAM: write RAM_FDB_DATA with index to access DATA_RAM.
+ * RAM bytes = 4*(x - 1) + [3:0]. e.g., 0 -> [3:0], 31 -> [123:120]
+ * FLOWDB: write DATA_RAM_FDB register and then read/write FDB1-12 to access
+ * flow database.
+ * RX_DMA_EN must be 0 for RX parser RAM PIO access. RX Parser RAM data reg
+ * should be the last write access of the write sequence.
+ * DEFAULT: undefined
+ */
+#define  REG_HP_DATA_RAM_FDB_ADDR          0x4154  /* HP data and FDB
+						      RAM address */
+#define    HP_DATA_RAM_FDB_DATA_MASK       0x001F  /* select 1 of 86 byte
+						      locations in header
+						      parser data ram to
+						      read/write */
+#define    HP_DATA_RAM_FDB_FDB_MASK        0x3F00  /* 1 of 64 353-bit locations
+						      in the flow database */
+#define  REG_HP_DATA_RAM_DATA              0x4158  /* HP data RAM data */
+
+/* HP flow database registers: 1 - 12, 0x415C - 0x4188, 4 8-bit bytes
+ * FLOW_DB(1) = IP_SA[127:96], FLOW_DB(2) = IP_SA[95:64]
+ * FLOW_DB(3) = IP_SA[63:32],  FLOW_DB(4) = IP_SA[31:0]
+ * FLOW_DB(5) = IP_DA[127:96], FLOW_DB(6) = IP_DA[95:64]
+ * FLOW_DB(7) = IP_DA[63:32],  FLOW_DB(8) = IP_DA[31:0]
+ * FLOW_DB(9) = {TCP_SP[15:0],TCP_DP[15:0]}
+ * FLOW_DB(10) = bit 0 has value for flow valid
+ * FLOW_DB(11) = TCP_SEQ[63:32], FLOW_DB(12) = TCP_SEQ[31:0]
+ */
+#define  REG_HP_FLOW_DB0                   0x415C  /* HP flow database 1 reg */
+#define  REG_HP_FLOW_DBN(x)                (REG_HP_FLOW_DB0 + (x)*4)
+
+/* diagnostics for RX Header Parser block.
+ * ASUN: the header parser state machine register is used for diagnostics
+ * purposes. however, the spec doesn't have any details on it.
+ */
+#define  REG_HP_STATE_MACHINE              0x418C  /* (ro) HP state machine */
+#define  REG_HP_STATUS0                    0x4190  /* (ro) HP status 1 */
+#define    HP_STATUS0_SAP_MASK             0xFFFF0000 /* SAP */
+#define    HP_STATUS0_L3_OFF_MASK          0x0000FE00 /* L3 offset */
+#define    HP_STATUS0_LB_CPUNUM_MASK       0x000001F8 /* load balancing CPU
+							 number */
+#define    HP_STATUS0_HRP_OPCODE_MASK      0x00000007 /* HRP opcode */
+
+#define  REG_HP_STATUS1                    0x4194  /* (ro) HP status 2 */
+#define    HP_STATUS1_ACCUR2_MASK          0xE0000000 /* accu R2[6:4] */
+#define    HP_STATUS1_FLOWID_MASK          0x1F800000 /* flow id */
+#define    HP_STATUS1_TCP_OFF_MASK         0x007F0000 /* tcp payload offset */
+#define    HP_STATUS1_TCP_SIZE_MASK        0x0000FFFF /* tcp payload size */
+
+#define  REG_HP_STATUS2                    0x4198  /* (ro) HP status 3 */
+#define    HP_STATUS2_ACCUR2_MASK          0xF0000000 /* accu R2[3:0] */
+#define    HP_STATUS2_CSUM_OFF_MASK        0x07F00000 /* checksum start
+							 start offset */
+#define    HP_STATUS2_ACCUR1_MASK          0x000FE000 /* accu R1 */
+#define    HP_STATUS2_FORCE_DROP           0x00001000 /* force drop */
+#define    HP_STATUS2_BWO_REASSM           0x00000800 /* batching w/o
+							 reassembly */
+#define    HP_STATUS2_JH_SPLIT_EN          0x00000400 /* jumbo header split
+							 enable */
+#define    HP_STATUS2_FORCE_TCP_NOCHECK    0x00000200 /* force tcp no payload
+							 check */
+#define    HP_STATUS2_DATA_MASK_ZERO       0x00000100 /* mask of data length
+							 equal to zero */
+#define    HP_STATUS2_FORCE_TCP_CHECK      0x00000080 /* force tcp payload
+							 chk */
+#define    HP_STATUS2_MASK_TCP_THRESH      0x00000040 /* mask of payload
+							 threshold */
+#define    HP_STATUS2_NO_ASSIST            0x00000020 /* no assist */
+#define    HP_STATUS2_CTRL_PACKET_FLAG     0x00000010 /* control packet flag */
+#define    HP_STATUS2_TCP_FLAG_CHECK       0x00000008 /* tcp flag check */
+#define    HP_STATUS2_SYN_FLAG             0x00000004 /* syn flag */
+#define    HP_STATUS2_TCP_CHECK            0x00000002 /* tcp payload chk */
+#define    HP_STATUS2_TCP_NOCHECK          0x00000001 /* tcp no payload chk */
+
+/* BIST for header parser(HP) and flow database memories (FDBM). set _START
+ * to start BIST. controller clears _START on completion. _START can also
+ * be cleared to force termination of BIST. a bit set indicates that that
+ * memory passed its BIST.
+ */
+#define  REG_HP_RAM_BIST                   0x419C  /* HP RAM BIST reg */
+#define    HP_RAM_BIST_HP_DATA_PASS        0x80000000 /* HP data ram */
+#define    HP_RAM_BIST_HP_INSTR0_PASS      0x40000000 /* HP instr ram 0 */
+#define    HP_RAM_BIST_HP_INSTR1_PASS      0x20000000 /* HP instr ram 1 */
+#define    HP_RAM_BIST_HP_INSTR2_PASS      0x10000000 /* HP instr ram 2 */
+#define    HP_RAM_BIST_FDBM_AGE0_PASS      0x08000000 /* FDBM aging RAM0 */
+#define    HP_RAM_BIST_FDBM_AGE1_PASS      0x04000000 /* FDBM aging RAM1 */
+#define    HP_RAM_BIST_FDBM_FLOWID00_PASS  0x02000000 /* FDBM flowid RAM0
+							 bank 0 */
+#define    HP_RAM_BIST_FDBM_FLOWID10_PASS  0x01000000 /* FDBM flowid RAM1
+							 bank 0 */
+#define    HP_RAM_BIST_FDBM_FLOWID20_PASS  0x00800000 /* FDBM flowid RAM2
+							 bank 0 */
+#define    HP_RAM_BIST_FDBM_FLOWID30_PASS  0x00400000 /* FDBM flowid RAM3
+							 bank 0 */
+#define    HP_RAM_BIST_FDBM_FLOWID01_PASS  0x00200000 /* FDBM flowid RAM0
+							 bank 1 */
+#define    HP_RAM_BIST_FDBM_FLOWID11_PASS  0x00100000 /* FDBM flowid RAM1
+							 bank 2 */
+#define    HP_RAM_BIST_FDBM_FLOWID21_PASS  0x00080000 /* FDBM flowid RAM2
+							 bank 1 */
+#define    HP_RAM_BIST_FDBM_FLOWID31_PASS  0x00040000 /* FDBM flowid RAM3
+							 bank 1 */
+#define    HP_RAM_BIST_FDBM_TCPSEQ_PASS    0x00020000 /* FDBM tcp sequence
+							 RAM */
+#define    HP_RAM_BIST_SUMMARY             0x00000002 /* all BIST tests */
+#define    HP_RAM_BIST_START               0x00000001 /* start/stop BIST */
+
+
+/** MAC registers.  **/
+/* reset bits are set using a PIO write and self-cleared after the command
+ * execution has completed.
+ */
+#define  REG_MAC_TX_RESET                  0x6000  /* TX MAC software reset
+						      command (default: 0x0) */
+#define  REG_MAC_RX_RESET                  0x6004  /* RX MAC software reset
+						      command (default: 0x0) */
+/* execute a pause flow control frame transmission
+ DEFAULT: 0x0XXXX */
+#define  REG_MAC_SEND_PAUSE                0x6008  /* send pause command reg */
+#define    MAC_SEND_PAUSE_TIME_MASK        0x0000FFFF /* value of pause time
+							 to be sent on network
+							 in units of slot
+							 times */
+#define    MAC_SEND_PAUSE_SEND             0x00010000 /* send pause flow ctrl
+							 frame on network */
+
+/* bit set indicates that event occurred. auto-cleared when status register
+ * is read and have corresponding mask bits in mask register. events will
+ * trigger an interrupt if the corresponding mask bit is 0.
+ * status register default: 0x00000000
+ * mask register default = 0xFFFFFFFF on reset
+ */
+#define  REG_MAC_TX_STATUS                 0x6010  /* TX MAC status reg */
+#define    MAC_TX_FRAME_XMIT               0x0001  /* successful frame
+						      transmision */
+#define    MAC_TX_UNDERRUN                 0x0002  /* terminated frame
+						      transmission due to
+						      data starvation in the
+						      xmit data path */
+#define    MAC_TX_MAX_PACKET_ERR           0x0004  /* frame exceeds max allowed
+						      length passed to TX MAC
+						      by the DMA engine */
+#define    MAC_TX_COLL_NORMAL              0x0008  /* rollover of the normal
+						      collision counter */
+#define    MAC_TX_COLL_EXCESS              0x0010  /* rollover of the excessive
+						      collision counter */
+#define    MAC_TX_COLL_LATE                0x0020  /* rollover of the late
+						      collision counter */
+#define    MAC_TX_COLL_FIRST               0x0040  /* rollover of the first
+						      collision counter */
+#define    MAC_TX_DEFER_TIMER              0x0080  /* rollover of the defer
+						      timer */
+#define    MAC_TX_PEAK_ATTEMPTS            0x0100  /* rollover of the peak
+						      attempts counter */
+
+#define  REG_MAC_RX_STATUS                 0x6014  /* RX MAC status reg */
+#define    MAC_RX_FRAME_RECV               0x0001  /* successful receipt of
+						      a frame */
+#define    MAC_RX_OVERFLOW                 0x0002  /* dropped frame due to
+						      RX FIFO overflow */
+#define    MAC_RX_FRAME_COUNT              0x0004  /* rollover of receive frame
+						      counter */
+#define    MAC_RX_ALIGN_ERR                0x0008  /* rollover of alignment
+						      error counter */
+#define    MAC_RX_CRC_ERR                  0x0010  /* rollover of crc error
+						      counter */
+#define    MAC_RX_LEN_ERR                  0x0020  /* rollover of length
+						      error counter */
+#define    MAC_RX_VIOL_ERR                 0x0040  /* rollover of code
+						      violation error */
+
+/* DEFAULT: 0xXXXX0000 on reset */
+#define  REG_MAC_CTRL_STATUS               0x6018  /* MAC control status reg */
+#define    MAC_CTRL_PAUSE_RECEIVED         0x00000001  /* successful
+							  reception of a
+							  pause control
+							  frame */
+#define    MAC_CTRL_PAUSE_STATE            0x00000002  /* MAC has made a
+							  transition from
+							  "not paused" to
+							  "paused" */
+#define    MAC_CTRL_NOPAUSE_STATE          0x00000004  /* MAC has made a
+							  transition from
+							  "paused" to "not
+							  paused" */
+#define    MAC_CTRL_PAUSE_TIME_MASK        0xFFFF0000  /* value of pause time
+							  operand that was
+							  received in the last
+							  pause flow control
+							  frame */
+
+/* layout identical to TX MAC[8:0] */
+#define  REG_MAC_TX_MASK                   0x6020  /* TX MAC mask reg */
+/* layout identical to RX MAC[6:0] */
+#define  REG_MAC_RX_MASK                   0x6024  /* RX MAC mask reg */
+/* layout identical to CTRL MAC[2:0] */
+#define  REG_MAC_CTRL_MASK                 0x6028  /* MAC control mask reg */
+
+/* to ensure proper operation, CFG_EN must be cleared to 0 and a delay
+ * imposed before writes to other bits in the TX_MAC_CFG register or any of
+ * the MAC parameters is performed. delay dependent upon time required to
+ * transmit a maximum size frame (= MAC_FRAMESIZE_MAX*8/Mbps). e.g.,
+ * the delay for a 1518-byte frame on a 100Mbps network is 125us.
+ * alternatively, just poll TX_CFG_EN until it reads back as 0.
+ * NOTE: on half-duplex 1Gbps, TX_CFG_CARRIER_EXTEND and
+ * RX_CFG_CARRIER_EXTEND should be set and the SLOT_TIME register should
+ * be 0x200 (slot time of 512 bytes)
+ */
+#define  REG_MAC_TX_CFG                 0x6030  /* TX MAC config reg */
+#define    MAC_TX_CFG_EN                0x0001  /* enable TX MAC. 0 will
+						      force TXMAC state
+						      machine to remain in
+						      idle state or to
+						      transition to idle state
+						      on completion of an
+						      ongoing packet. */
+#define    MAC_TX_CFG_IGNORE_CARRIER    0x0002  /* disable CSMA/CD deferral
+						   process. set to 1 when
+						   full duplex and 0 when
+						   half duplex */
+#define    MAC_TX_CFG_IGNORE_COLL       0x0004  /* disable CSMA/CD backoff
+						   algorithm. set to 1 when
+						   full duplex and 0 when
+						   half duplex */
+#define    MAC_TX_CFG_IPG_EN            0x0008  /* enable extension of the
+						   Rx-to-TX IPG. after
+						   receiving a frame, TX
+						   MAC will reset its
+						   deferral process to
+						   carrier sense for the
+						   amount of time = IPG0 +
+						   IPG1 and commit to
+						   transmission for time
+						   specified in IPG2. when
+						   0 or when xmitting frames
+						   back-to-pack (Tx-to-Tx
+						   IPG), TX MAC ignores
+						   IPG0 and will only use
+						   IPG1 for deferral time.
+						   IPG2 still used. */
+#define    MAC_TX_CFG_NEVER_GIVE_UP_EN  0x0010  /* TX MAC will not easily
+						   give up on frame
+						   xmission. if backoff
+						   algorithm reaches the
+						   ATTEMPT_LIMIT, it will
+						   clear attempts counter
+						   and continue trying to
+						   send the frame as
+						   specified by
+						   GIVE_UP_LIM. when 0,
+						   TX MAC will execute
+						   standard CSMA/CD prot. */
+#define    MAC_TX_CFG_NEVER_GIVE_UP_LIM 0x0020  /* when set, TX MAC will
+						   continue to try to xmit
+						   until successful. when
+						   0, TX MAC will continue
+						   to try xmitting until
+						   successful or backoff
+						   algorithm reaches
+						   ATTEMPT_LIMIT*16 */
+#define    MAC_TX_CFG_NO_BACKOFF        0x0040  /* modify CSMA/CD to disable
+						   backoff algorithm. TX
+						   MAC will not back off
+						   after a xmission attempt
+						   that resulted in a
+						   collision. */
+#define    MAC_TX_CFG_SLOW_DOWN         0x0080  /* modify CSMA/CD so that
+						   deferral process is reset
+						   in response to carrier
+						   sense during the entire
+						   duration of IPG. TX MAC
+						   will only commit to frame
+						   xmission after frame
+						   xmission has actually
+						   begun. */
+#define    MAC_TX_CFG_NO_FCS            0x0100  /* TX MAC will not generate
+						   CRC for all xmitted
+						   packets. when clear, CRC
+						   generation is dependent
+						   upon NO_CRC bit in the
+						   xmit control word from
+						   TX DMA */
+#define    MAC_TX_CFG_CARRIER_EXTEND    0x0200  /* enables xmit part of the
+						   carrier extension
+						   feature. this allows for
+						   longer collision domains
+						   by extending the carrier
+						   and collision window
+						   from the end of FCS until
+						   the end of the slot time
+						   if necessary. Required
+						   for half-duplex at 1Gbps,
+						   clear otherwise. */
+
+/* when CRC is not stripped, reassembly packets will not contain the CRC.
+ * these will be stripped by HRP because it reassembles layer 4 data, and the
+ * CRC is layer 2. however, non-reassembly packets will still contain the CRC
+ * when passed to the host. to ensure proper operation, need to wait 3.2ms
+ * after clearing RX_CFG_EN before writing to any other RX MAC registers
+ * or other MAC parameters. alternatively, poll RX_CFG_EN until it clears
+ * to 0. similary, HASH_FILTER_EN and ADDR_FILTER_EN have the same
+ * restrictions as CFG_EN.
+ */
+#define  REG_MAC_RX_CFG                 0x6034  /* RX MAC config reg */
+#define    MAC_RX_CFG_EN                0x0001  /* enable RX MAC */
+#define    MAC_RX_CFG_STRIP_PAD         0x0002  /* always program to 0.
+						   feature not supported */
+#define    MAC_RX_CFG_STRIP_FCS         0x0004  /* RX MAC will strip the
+						   last 4 bytes of a
+						   received frame. */
+#define    MAC_RX_CFG_PROMISC_EN        0x0008  /* promiscuous mode */
+#define    MAC_RX_CFG_PROMISC_GROUP_EN  0x0010  /* accept all valid
+						   multicast frames (group
+						   bit in DA field set) */
+#define    MAC_RX_CFG_HASH_FILTER_EN    0x0020  /* use hash table to filter
+						   multicast addresses */
+#define    MAC_RX_CFG_ADDR_FILTER_EN    0x0040  /* cause RX MAC to use
+						   address filtering regs
+						   to filter both unicast
+						   and multicast
+						   addresses */
+#define    MAC_RX_CFG_DISABLE_DISCARD   0x0080  /* pass errored frames to
+						   RX DMA by setting BAD
+						   bit but not Abort bit
+						   in the status. CRC,
+						   framing, and length errs
+						   will not increment
+						   error counters. frames
+						   which don't match dest
+						   addr will be passed up
+						   w/ BAD bit set. */
+#define    MAC_RX_CFG_CARRIER_EXTEND    0x0100  /* enable reception of
+						   packet bursts generated
+						   by carrier extension
+						   with packet bursting
+						   senders. only applies
+						   to half-duplex 1Gbps */
+
+/* DEFAULT: 0x0 */
+#define  REG_MAC_CTRL_CFG               0x6038  /* MAC control config reg */
+#define    MAC_CTRL_CFG_SEND_PAUSE_EN   0x0001  /* respond to requests for
+						   sending pause flow ctrl
+						   frames */
+#define    MAC_CTRL_CFG_RECV_PAUSE_EN   0x0002  /* respond to received
+						   pause flow ctrl frames */
+#define    MAC_CTRL_CFG_PASS_CTRL       0x0004  /* pass valid MAC ctrl
+						   packets to RX DMA */
+
+/* to ensure proper operation, a global initialization sequence should be
+ * performed when a loopback config is entered or exited. if programmed after
+ * a hw or global sw reset, RX/TX MAC software reset and initialization
+ * should be done to ensure stable clocking.
+ * DEFAULT: 0x0
+ */
+#define  REG_MAC_XIF_CFG                0x603C  /* XIF config reg */
+#define    MAC_XIF_TX_MII_OUTPUT_EN        0x0001  /* enable output drivers
+						      on MII xmit bus */
+#define    MAC_XIF_MII_INT_LOOPBACK        0x0002  /* loopback GMII xmit data
+						      path to GMII recv data
+						      path. phy mode register
+						      clock selection must be
+						      set to GMII mode and
+						      GMII_MODE should be set
+						      to 1. in loopback mode,
+						      REFCLK will drive the
+						      entire mac core. 0 for
+						      normal operation. */
+#define    MAC_XIF_DISABLE_ECHO            0x0004  /* disables receive data
+						      path during packet
+						      xmission. clear to 0
+						      in any full duplex mode,
+						      in any loopback mode,
+						      or in half-duplex SERDES
+						      or SLINK modes. set when
+						      in half-duplex when
+						      using external phy. */
+#define    MAC_XIF_GMII_MODE               0x0008  /* MAC operates with GMII
+						      clocks and datapath */
+#define    MAC_XIF_MII_BUFFER_OUTPUT_EN    0x0010  /* MII_BUF_EN pin. enable
+						      external tristate buffer
+						      on the MII receive
+						      bus. */
+#define    MAC_XIF_LINK_LED                0x0020  /* LINKLED# active (low) */
+#define    MAC_XIF_FDPLX_LED               0x0040  /* FDPLXLED# active (low) */
+
+#define  REG_MAC_IPG0                      0x6040  /* inter-packet gap0 reg.
+						      recommended: 0x00 */
+#define  REG_MAC_IPG1                      0x6044  /* inter-packet gap1 reg
+						      recommended: 0x08 */
+#define  REG_MAC_IPG2                      0x6048  /* inter-packet gap2 reg
+						      recommended: 0x04 */
+#define  REG_MAC_SLOT_TIME                 0x604C  /* slot time reg
+						      recommended: 0x40 */
+#define  REG_MAC_FRAMESIZE_MIN             0x6050  /* min frame size reg
+						      recommended: 0x40 */
+
+/* FRAMESIZE_MAX holds both the max frame size as well as the max burst size.
+ * recommended value:  0x2000.05EE
+ */
+#define  REG_MAC_FRAMESIZE_MAX             0x6054  /* max frame size reg */
+#define    MAC_FRAMESIZE_MAX_BURST_MASK    0x3FFF0000 /* max burst size */
+#define    MAC_FRAMESIZE_MAX_BURST_SHIFT   16
+#define    MAC_FRAMESIZE_MAX_FRAME_MASK    0x00007FFF /* max frame size */
+#define    MAC_FRAMESIZE_MAX_FRAME_SHIFT   0
+#define  REG_MAC_PA_SIZE                   0x6058  /* PA size reg. number of
+						      preamble bytes that the
+						      TX MAC will xmit at the
+						      beginning of each frame
+						      value should be 2 or
+						      greater. recommended
+						      value: 0x07 */
+#define  REG_MAC_JAM_SIZE                  0x605C  /* jam size reg. duration
+						      of jam in units of media
+						      byte time. recommended
+						      value: 0x04 */
+#define  REG_MAC_ATTEMPT_LIMIT             0x6060  /* attempt limit reg. #
+						      of attempts TX MAC will
+						      make to xmit a frame
+						      before it resets its
+						      attempts counter. after
+						      the limit has been
+						      reached, TX MAC may or
+						      may not drop the frame
+						      dependent upon value
+						      in TX_MAC_CFG.
+						      recommended
+						      value: 0x10 */
+#define  REG_MAC_CTRL_TYPE                 0x6064  /* MAC control type reg.
+						      type field of a MAC
+						      ctrl frame. recommended
+						      value: 0x8808 */
+
+/* mac address registers: 0 - 44, 0x6080 - 0x6130, 4 8-bit bytes.
+ * register           contains                   comparison
+ *    0        16 MSB of primary MAC addr        [47:32] of DA field
+ *    1        16 middle bits ""                 [31:16] of DA field
+ *    2        16 LSB ""                         [15:0] of DA field
+ *    3*x      16MSB of alt MAC addr 1-15        [47:32] of DA field
+ *    4*x      16 middle bits ""                 [31:16]
+ *    5*x      16 LSB ""                         [15:0]
+ *    42       16 MSB of MAC CTRL addr           [47:32] of DA.
+ *    43       16 middle bits ""                 [31:16]
+ *    44       16 LSB ""                         [15:0]
+ *    MAC CTRL addr must be the reserved multicast addr for MAC CTRL frames.
+ *    if there is a match, MAC will set the bit for alternative address
+ *    filter pass [15]
+
+ *    here is the map of registers given MAC address notation: a:b:c:d:e:f
+ *                     ab             cd             ef
+ *    primary addr     reg 2          reg 1          reg 0
+ *    alt addr 1       reg 5          reg 4          reg 3
+ *    alt addr x       reg 5*x        reg 4*x        reg 3*x
+ *    ctrl addr        reg 44         reg 43         reg 42
+ */
+#define  REG_MAC_ADDR0                     0x6080  /* MAC address 0 reg */
+#define  REG_MAC_ADDRN(x)                  (REG_MAC_ADDR0 + (x)*4)
+#define  REG_MAC_ADDR_FILTER0              0x614C  /* address filter 0 reg
+						      [47:32] */
+#define  REG_MAC_ADDR_FILTER1              0x6150  /* address filter 1 reg
+						      [31:16] */
+#define  REG_MAC_ADDR_FILTER2              0x6154  /* address filter 2 reg
+						      [15:0] */
+#define  REG_MAC_ADDR_FILTER2_1_MASK       0x6158  /* address filter 2 and 1
+						      mask reg. 8-bit reg
+						      contains nibble mask for
+						      reg 2 and 1. */
+#define  REG_MAC_ADDR_FILTER0_MASK         0x615C  /* address filter 0 mask
+						      reg */
+
+/* hash table registers: 0 - 15, 0x6160 - 0x619C, 4 8-bit bytes
+ * 16-bit registers contain bits of the hash table.
+ * reg x  -> [16*(15 - x) + 15 : 16*(15 - x)].
+ * e.g., 15 -> [15:0], 0 -> [255:240]
+ */
+#define  REG_MAC_HASH_TABLE0               0x6160  /* hash table 0 reg */
+#define  REG_MAC_HASH_TABLEN(x)            (REG_MAC_HASH_TABLE0 + (x)*4)
+
+/* statistics registers. these registers generate an interrupt on
+ * overflow. recommended initialization: 0x0000. most are 16-bits except
+ * for PEAK_ATTEMPTS register which is 8 bits.
+ */
+#define  REG_MAC_COLL_NORMAL               0x61A0 /* normal collision
+						     counter. */
+#define  REG_MAC_COLL_FIRST                0x61A4 /* first attempt
+						     successful collision
+						     counter */
+#define  REG_MAC_COLL_EXCESS               0x61A8 /* excessive collision
+						     counter */
+#define  REG_MAC_COLL_LATE                 0x61AC /* late collision counter */
+#define  REG_MAC_TIMER_DEFER               0x61B0 /* defer timer. time base
+						     is the media byte
+						     clock/256 */
+#define  REG_MAC_ATTEMPTS_PEAK             0x61B4 /* peak attempts reg */
+#define  REG_MAC_RECV_FRAME                0x61B8 /* receive frame counter */
+#define  REG_MAC_LEN_ERR                   0x61BC /* length error counter */
+#define  REG_MAC_ALIGN_ERR                 0x61C0 /* alignment error counter */
+#define  REG_MAC_FCS_ERR                   0x61C4 /* FCS error counter */
+#define  REG_MAC_RX_CODE_ERR               0x61C8 /* RX code violation
+						     error counter */
+
+/* misc registers */
+#define  REG_MAC_RANDOM_SEED               0x61CC /* random number seed reg.
+						   10-bit register used as a
+						   seed  for the random number
+						   generator for the CSMA/CD
+						   backoff algorithm. only
+						   programmed after power-on
+						   reset and should be a
+						   random value which has a
+						   high likelihood of being
+						   unique for each MAC
+						   attached to a network
+						   segment (e.g., 10 LSB of
+						   MAC address) */
+
+/* ASUN: there's a PAUSE_TIMER (ro) described, but it's not in the address
+ *       map
+ */
+
+/* 27-bit register has the current state for key state machines in the MAC */
+#define  REG_MAC_STATE_MACHINE             0x61D0 /* (ro) state machine reg */
+#define    MAC_SM_RLM_MASK                 0x07800000
+#define    MAC_SM_RLM_SHIFT                23
+#define    MAC_SM_RX_FC_MASK               0x00700000
+#define    MAC_SM_RX_FC_SHIFT              20
+#define    MAC_SM_TLM_MASK                 0x000F0000
+#define    MAC_SM_TLM_SHIFT                16
+#define    MAC_SM_ENCAP_SM_MASK            0x0000F000
+#define    MAC_SM_ENCAP_SM_SHIFT           12
+#define    MAC_SM_TX_REQ_MASK              0x00000C00
+#define    MAC_SM_TX_REQ_SHIFT             10
+#define    MAC_SM_TX_FC_MASK               0x000003C0
+#define    MAC_SM_TX_FC_SHIFT              6
+#define    MAC_SM_FIFO_WRITE_SEL_MASK      0x00000038
+#define    MAC_SM_FIFO_WRITE_SEL_SHIFT     3
+#define    MAC_SM_TX_FIFO_EMPTY_MASK       0x00000007
+#define    MAC_SM_TX_FIFO_EMPTY_SHIFT      0
+
+/** MIF registers. the MIF can be programmed in either bit-bang or
+ *  frame mode.
+ **/
+#define  REG_MIF_BIT_BANG_CLOCK            0x6200 /* MIF bit-bang clock.
+						   1 -> 0 will generate a
+						   rising edge. 0 -> 1 will
+						   generate a falling edge. */
+#define  REG_MIF_BIT_BANG_DATA             0x6204 /* MIF bit-bang data. 1-bit
+						     register generates data */
+#define  REG_MIF_BIT_BANG_OUTPUT_EN        0x6208 /* MIF bit-bang output
+						     enable. enable when
+						     xmitting data from MIF to
+						     transceiver. */
+
+/* 32-bit register serves as an instruction register when the MIF is
+ * programmed in frame mode. load this register w/ a valid instruction
+ * (as per IEEE 802.3u MII spec). poll this register to check for instruction
+ * execution completion. during a read operation, this register will also
+ * contain the 16-bit data returned by the tranceiver. unless specified
+ * otherwise, fields are considered "don't care" when polling for
+ * completion.
+ */
+#define  REG_MIF_FRAME                     0x620C /* MIF frame/output reg */
+#define    MIF_FRAME_START_MASK            0xC0000000 /* start of frame.
+							 load w/ 01 when
+							 issuing an instr */
+#define    MIF_FRAME_ST                    0x40000000 /* STart of frame */
+#define    MIF_FRAME_OPCODE_MASK           0x30000000 /* opcode. 01 for a
+							 write. 10 for a
+							 read */
+#define    MIF_FRAME_OP_READ               0x20000000 /* read OPcode */
+#define    MIF_FRAME_OP_WRITE              0x10000000 /* write OPcode */
+#define    MIF_FRAME_PHY_ADDR_MASK         0x0F800000 /* phy address. when
+							 issuing an instr,
+							 this field should be
+							 loaded w/ the XCVR
+							 addr */
+#define    MIF_FRAME_PHY_ADDR_SHIFT        23
+#define    MIF_FRAME_REG_ADDR_MASK         0x007C0000 /* register address.
+							 when issuing an instr,
+							 addr of register
+							 to be read/written */
+#define    MIF_FRAME_REG_ADDR_SHIFT        18
+#define    MIF_FRAME_TURN_AROUND_MSB       0x00020000 /* turn around, MSB.
+							 when issuing an instr,
+							 set this bit to 1 */
+#define    MIF_FRAME_TURN_AROUND_LSB       0x00010000 /* turn around, LSB.
+							 when issuing an instr,
+							 set this bit to 0.
+							 when polling for
+							 completion, 1 means
+							 that instr execution
+							 has been completed */
+#define    MIF_FRAME_DATA_MASK             0x0000FFFF /* instruction payload
+							 load with 16-bit data
+							 to be written in
+							 transceiver reg for a
+							 write. doesn't matter
+							 in a read. when
+							 polling for
+							 completion, field is
+							 "don't care" for write
+							 and 16-bit data
+							 returned by the
+							 transceiver for a
+							 read (if valid bit
+							 is set) */
+#define  REG_MIF_CFG                    0x6210 /* MIF config reg */
+#define    MIF_CFG_PHY_SELECT           0x0001 /* 1 -> select MDIO_1
+						  0 -> select MDIO_0 */
+#define    MIF_CFG_POLL_EN              0x0002 /* enable polling
+						  mechanism. if set,
+						  BB_MODE should be 0 */
+#define    MIF_CFG_BB_MODE              0x0004 /* 1 -> bit-bang mode
+						  0 -> frame mode */
+#define    MIF_CFG_POLL_REG_MASK        0x00F8 /* register address to be
+						  used by polling mode.
+						  only meaningful if POLL_EN
+						  is set to 1 */
+#define    MIF_CFG_POLL_REG_SHIFT       3
+#define    MIF_CFG_MDIO_0               0x0100 /* (ro) dual purpose.
+						  when MDIO_0 is idle,
+						  1 -> tranceiver is
+						  connected to MDIO_0.
+						  when MIF is communicating
+						  w/ MDIO_0 in bit-bang
+						  mode, this bit indicates
+						  the incoming bit stream
+						  during a read op */
+#define    MIF_CFG_MDIO_1               0x0200 /* (ro) dual purpose.
+						  when MDIO_1 is idle,
+						  1 -> transceiver is
+						  connected to MDIO_1.
+						  when MIF is communicating
+						  w/ MDIO_1 in bit-bang
+						  mode, this bit indicates
+						  the incoming bit stream
+						  during a read op */
+#define    MIF_CFG_POLL_PHY_MASK        0x7C00 /* tranceiver address to
+						  be polled */
+#define    MIF_CFG_POLL_PHY_SHIFT       10
+
+/* 16-bit register used to determine which bits in the POLL_STATUS portion of
+ * the MIF_STATUS register will cause an interrupt. if a mask bit is 0,
+ * corresponding bit of the POLL_STATUS will generate a MIF interrupt when
+ * set. DEFAULT: 0xFFFF
+ */
+#define  REG_MIF_MASK                      0x6214 /* MIF mask reg */
+
+/* 32-bit register used when in poll mode. auto-cleared after being read */
+#define  REG_MIF_STATUS                    0x6218 /* MIF status reg */
+#define    MIF_STATUS_POLL_DATA_MASK       0xFFFF0000 /* poll data contains
+							 the "latest image"
+							 update of the XCVR
+							 reg being read */
+#define    MIF_STATUS_POLL_DATA_SHIFT      16
+#define    MIF_STATUS_POLL_STATUS_MASK     0x0000FFFF /* poll status indicates
+							 which bits in the
+							 POLL_DATA field have
+							 changed since the
+							 MIF_STATUS reg was
+							 last read */
+#define    MIF_STATUS_POLL_STATUS_SHIFT    0
+
+/* 7-bit register has current state for all state machines in the MIF */
+#define  REG_MIF_STATE_MACHINE             0x621C /* MIF state machine reg */
+#define    MIF_SM_CONTROL_MASK             0x07   /* control state machine
+						     state */
+#define    MIF_SM_EXECUTION_MASK           0x60   /* execution state machine
+						     state */
+
+/** PCS/Serialink. the following registers are equivalent to the standard
+ *  MII management registers except that they're directly mapped in
+ *  Cassini's register space.
+ **/
+
+/* the auto-negotiation enable bit should be programmed the same at
+ * the link partner as in the local device to enable auto-negotiation to
+ * complete. when that bit is reprogrammed, auto-neg/manual config is
+ * restarted automatically.
+ * DEFAULT: 0x1040
+ */
+#define  REG_PCS_MII_CTRL                  0x9000 /* PCS MII control reg */
+#define    PCS_MII_CTRL_1000_SEL           0x0040 /* reads 1. ignored on
+						     writes */
+#define    PCS_MII_CTRL_COLLISION_TEST     0x0080 /* COL signal at the PCS
+						     to MAC interface is
+						     activated regardless
+						     of activity */
+#define    PCS_MII_CTRL_DUPLEX             0x0100 /* forced 0x0. PCS
+						     behaviour same for
+						     half and full dplx */
+#define    PCS_MII_RESTART_AUTONEG         0x0200 /* self clearing.
+						     restart auto-
+						     negotiation */
+#define    PCS_MII_ISOLATE                 0x0400 /* read as 0. ignored
+						     on writes */
+#define    PCS_MII_POWER_DOWN              0x0800 /* read as 0. ignored
+						     on writes */
+#define    PCS_MII_AUTONEG_EN              0x1000 /* default 1. PCS goes
+						     through automatic
+						     link config before it
+						     can be used. when 0,
+						     link can be used
+						     w/out any link config
+						     phase */
+#define    PCS_MII_10_100_SEL              0x2000 /* read as 0. ignored on
+						     writes */
+#define    PCS_MII_RESET                   0x8000 /* reset PCS. self-clears
+						     when done */
+
+/* DEFAULT: 0x0108 */
+#define  REG_PCS_MII_STATUS                0x9004 /* PCS MII status reg */
+#define    PCS_MII_STATUS_EXTEND_CAP       0x0001 /* reads 0 */
+#define    PCS_MII_STATUS_JABBER_DETECT    0x0002 /* reads 0 */
+#define    PCS_MII_STATUS_LINK_STATUS      0x0004 /* 1 -> link up.
+						     0 -> link down. 0 is
+						     latched so that 0 is
+						     kept until read. read
+						     2x to determine if the
+						     link has gone up again */
+#define    PCS_MII_STATUS_AUTONEG_ABLE     0x0008 /* reads 1 (able to perform
+						     auto-neg) */
+#define    PCS_MII_STATUS_REMOTE_FAULT     0x0010 /* 1 -> remote fault detected
+						     from received link code
+						     word. only valid after
+						     auto-neg completed */
+#define    PCS_MII_STATUS_AUTONEG_COMP     0x0020 /* 1 -> auto-negotiation
+						          completed
+						     0 -> auto-negotiation not
+						     completed */
+#define    PCS_MII_STATUS_EXTEND_STATUS    0x0100 /* reads as 1. used as an
+						     indication that this is
+						     a 1000 Base-X PHY. writes
+						     to it are ignored */
+
+/* used during auto-negotiation.
+ * DEFAULT: 0x00E0
+ */
+#define  REG_PCS_MII_ADVERT                0x9008 /* PCS MII advertisement
+						     reg */
+#define    PCS_MII_ADVERT_FD               0x0020  /* advertise full duplex
+						      1000 Base-X */
+#define    PCS_MII_ADVERT_HD               0x0040  /* advertise half-duplex
+						      1000 Base-X */
+#define    PCS_MII_ADVERT_SYM_PAUSE        0x0080  /* advertise PAUSE
+						      symmetric capability */
+#define    PCS_MII_ADVERT_ASYM_PAUSE       0x0100  /* advertises PAUSE
+						      asymmetric capability */
+#define    PCS_MII_ADVERT_RF_MASK          0x3000 /* remote fault. write bit13
+						     to optionally indicate to
+						     link partner that chip is
+						     going off-line. bit12 will
+						     get set when signal
+						     detect == FAIL and will
+						     remain set until
+						     successful negotiation */
+#define    PCS_MII_ADVERT_ACK              0x4000 /* (ro) */
+#define    PCS_MII_ADVERT_NEXT_PAGE        0x8000 /* (ro) forced 0x0 */
+
+/* contents updated as a result of autonegotiation. layout and definitions
+ * identical to PCS_MII_ADVERT
+ */
+#define  REG_PCS_MII_LPA                   0x900C /* PCS MII link partner
+						     ability reg */
+#define    PCS_MII_LPA_FD             PCS_MII_ADVERT_FD
+#define    PCS_MII_LPA_HD             PCS_MII_ADVERT_HD
+#define    PCS_MII_LPA_SYM_PAUSE      PCS_MII_ADVERT_SYM_PAUSE
+#define    PCS_MII_LPA_ASYM_PAUSE     PCS_MII_ADVERT_ASYM_PAUSE
+#define    PCS_MII_LPA_RF_MASK        PCS_MII_ADVERT_RF_MASK
+#define    PCS_MII_LPA_ACK            PCS_MII_ADVERT_ACK
+#define    PCS_MII_LPA_NEXT_PAGE      PCS_MII_ADVERT_NEXT_PAGE
+
+/* DEFAULT: 0x0 */
+#define  REG_PCS_CFG                       0x9010 /* PCS config reg */
+#define    PCS_CFG_EN                      0x01   /* enable PCS. must be
+						     0 when modifying
+						     PCS_MII_ADVERT */
+#define    PCS_CFG_SD_OVERRIDE             0x02   /* sets signal detect to
+						     OK. bit is
+						     non-resettable */
+#define    PCS_CFG_SD_ACTIVE_LOW           0x04   /* changes interpretation
+						     of optical signal to make
+						     signal detect okay when
+						     signal is low */
+#define    PCS_CFG_JITTER_STUDY_MASK       0x18   /* used to make jitter
+						     measurements. a single
+						     code group is xmitted
+						     regularly.
+						     0x0 = normal operation
+						     0x1 = high freq test
+						           pattern, D21.5
+						     0x2 = low freq test
+						           pattern, K28.7
+						     0x3 = reserved */
+#define    PCS_CFG_10MS_TIMER_OVERRIDE     0x20   /* shortens 10-20ms auto-
+						     negotiation timer to
+						     a few cycles for test
+						     purposes */
+
+/* used for diagnostic purposes. bits 20-22 autoclear on read */
+#define  REG_PCS_STATE_MACHINE             0x9014 /* (ro) PCS state machine
+						     and diagnostic reg */
+#define    PCS_SM_TX_STATE_MASK            0x0000000F /* 0 and 1 indicate
+							 xmission of idle.
+							 otherwise, xmission of
+							 a packet */
+#define    PCS_SM_RX_STATE_MASK            0x000000F0 /* 0 indicates reception
+							 of idle. otherwise,
+							 reception of packet */
+#define    PCS_SM_WORD_SYNC_STATE_MASK     0x00000700 /* 0 indicates loss of
+							 sync */
+#define    PCS_SM_SEQ_DETECT_STATE_MASK    0x00001800 /* cycling through 0-3
+							 indicates reception of
+							 Config codes. cycling
+							 through 0-1 indicates
+							 reception of idles */
+#define    PCS_SM_LINK_STATE_MASK          0x0001E000
+#define        SM_LINK_STATE_UP            0x00016000 /* link state is up */
+
+#define    PCS_SM_LOSS_LINK_C              0x00100000 /* loss of link due to
+							 recept of Config
+							 codes */
+#define    PCS_SM_LOSS_LINK_SYNC           0x00200000 /* loss of link due to
+							 loss of sync */
+#define    PCS_SM_LOSS_SIGNAL_DETECT       0x00400000 /* signal detect goes
+							 from OK to FAIL. bit29
+							 will also be set if
+							 this is set */
+#define    PCS_SM_NO_LINK_BREAKLINK        0x01000000 /* link not up due to
+							receipt of breaklink
+							C codes from partner.
+							C codes w/ 0 content
+							received triggering
+							start/restart of
+							autonegotiation.
+							should be sent for
+							no longer than 20ms */
+#define    PCS_SM_NO_LINK_SERDES           0x02000000 /* serdes being
+							initialized. see serdes
+							state reg */
+#define    PCS_SM_NO_LINK_C                0x04000000 /* C codes not stable or
+							 not received */
+#define    PCS_SM_NO_LINK_SYNC             0x08000000 /* word sync not
+							 achieved */
+#define    PCS_SM_NO_LINK_WAIT_C           0x10000000 /* waiting for C codes
+							 w/ ack bit set */
+#define    PCS_SM_NO_LINK_NO_IDLE          0x20000000 /* link partner continues
+							 to send C codes
+							 instead of idle
+							 symbols or pkt data */
+
+/* this register indicates interrupt changes in specific PCS MII status bits.
+ * PCS_INT may be masked at the ISR level. only a single bit is implemented
+ * for link status change.
+ */
+#define  REG_PCS_INTR_STATUS               0x9018 /* PCS interrupt status */
+#define    PCS_INTR_STATUS_LINK_CHANGE     0x04   /* link status has changed
+						     since last read */
+
+/* control which network interface is used. no more than one bit should
+ * be set.
+ * DEFAULT: none
+ */
+#define  REG_PCS_DATAPATH_MODE             0x9050 /* datapath mode reg */
+#define    PCS_DATAPATH_MODE_MII           0x00 /* PCS is not used and
+						   MII/GMII is selected.
+						   selection between MII and
+						   GMII is controlled by
+						   XIF_CFG */
+#define    PCS_DATAPATH_MODE_SERDES        0x02 /* PCS is used via the
+						   10-bit interface */
+
+/* input to serdes chip or serialink block */
+#define  REG_PCS_SERDES_CTRL              0x9054 /* serdes control reg */
+#define    PCS_SERDES_CTRL_LOOPBACK       0x01   /* enable loopback on
+						    serdes interface */
+#define    PCS_SERDES_CTRL_SYNCD_EN       0x02   /* enable sync carrier
+						    detection. should be
+						    0x0 for normal
+						    operation */
+#define    PCS_SERDES_CTRL_LOCKREF       0x04   /* frequency-lock RBC[0:1]
+						   to REFCLK when set.
+						   when clear, receiver
+						   clock locks to incoming
+						   serial data */
+
+/* multiplex test outputs into the PROM address (PA_3 through PA_0) pins.
+ * should be 0x0 for normal operations.
+ * 0b000          normal operation, PROM address[3:0] selected
+ * 0b001          rxdma req, rxdma ack, rxdma ready, rxdma read
+ * 0b010          rxmac req, rx ack, rx tag, rx clk shared
+ * 0b011          txmac req, tx ack, tx tag, tx retry req
+ * 0b100          tx tp3, tx tp2, tx tp1, tx tp0
+ * 0b101          R period RX, R period TX, R period HP, R period BIM
+ * DEFAULT: 0x0
+ */
+#define  REG_PCS_SHARED_OUTPUT_SEL         0x9058 /* shared output select */
+#define    PCS_SOS_PROM_ADDR_MASK          0x0007
+
+/* used for diagnostics. this register indicates progress of the SERDES
+ * boot up.
+ * 0b00       undergoing reset
+ * 0b01       waiting 500us while lockrefn is asserted
+ * 0b10       waiting for comma detect
+ * 0b11       receive data is synchronized
+ * DEFAULT: 0x0
+ */
+#define  REG_PCS_SERDES_STATE              0x905C /* (ro) serdes state */
+#define    PCS_SERDES_STATE_MASK           0x03
+
+/* used for diagnostics. indicates number of packets transmitted or received.
+ * counters rollover w/out generating an interrupt.
+ * DEFAULT: 0x0
+ */
+#define  REG_PCS_PACKET_COUNT              0x9060 /* (ro) PCS packet counter */
+#define    PCS_PACKET_COUNT_TX             0x000007FF /* pkts xmitted by PCS */
+#define    PCS_PACKET_COUNT_RX             0x07FF0000 /* pkts recvd by PCS
+							 whether they
+							 encountered an error
+							 or not */
+
+/** LocalBus Devices. the following provides run-time access to the
+ *  Cassini's PROM
+ ***/
+#define  REG_EXPANSION_ROM_RUN_START       0x100000 /* expansion rom run time
+						       access */
+#define  REG_EXPANSION_ROM_RUN_END         0x17FFFF
+
+#define  REG_SECOND_LOCALBUS_START         0x180000 /* secondary local bus
+						       device */
+#define  REG_SECOND_LOCALBUS_END           0x1FFFFF
+
+/* entropy device */
+#define  REG_ENTROPY_START                 REG_SECOND_LOCALBUS_START
+#define  REG_ENTROPY_DATA                  (REG_ENTROPY_START + 0x00)
+#define  REG_ENTROPY_STATUS                (REG_ENTROPY_START + 0x04)
+#define      ENTROPY_STATUS_DRDY           0x01
+#define      ENTROPY_STATUS_BUSY           0x02
+#define      ENTROPY_STATUS_CIPHER         0x04
+#define      ENTROPY_STATUS_BYPASS_MASK    0x18
+#define  REG_ENTROPY_MODE                  (REG_ENTROPY_START + 0x05)
+#define      ENTROPY_MODE_KEY_MASK         0x07
+#define      ENTROPY_MODE_ENCRYPT          0x40
+#define  REG_ENTROPY_RAND_REG              (REG_ENTROPY_START + 0x06)
+#define  REG_ENTROPY_RESET                 (REG_ENTROPY_START + 0x07)
+#define      ENTROPY_RESET_DES_IO          0x01
+#define      ENTROPY_RESET_STC_MODE        0x02
+#define      ENTROPY_RESET_KEY_CACHE       0x04
+#define      ENTROPY_RESET_IV              0x08
+#define  REG_ENTROPY_IV                    (REG_ENTROPY_START + 0x08)
+#define  REG_ENTROPY_KEY0                  (REG_ENTROPY_START + 0x10)
+#define  REG_ENTROPY_KEYN(x)               (REG_ENTROPY_KEY0 + 4*(x))
+
+/* phys of interest w/ their special mii registers */
+#define PHY_LUCENT_B0     0x00437421
+#define   LUCENT_MII_REG      0x1F
+
+#define PHY_NS_DP83065    0x20005c78
+#define   DP83065_MII_MEM     0x16
+#define   DP83065_MII_REGD    0x1D
+#define   DP83065_MII_REGE    0x1E
+
+#define PHY_BROADCOM_5411 0x00206071
+#define PHY_BROADCOM_B0   0x00206050
+#define   BROADCOM_MII_REG4   0x14
+#define   BROADCOM_MII_REG5   0x15
+#define   BROADCOM_MII_REG7   0x17
+#define   BROADCOM_MII_REG8   0x18
+
+#define   CAS_MII_ANNPTR          0x07
+#define   CAS_MII_ANNPRR          0x08
+#define   CAS_MII_1000_CTRL       0x09
+#define   CAS_MII_1000_STATUS     0x0A
+#define   CAS_MII_1000_EXTEND     0x0F
+
+#define   CAS_BMSR_1000_EXTEND    0x0100 /* supports 1000Base-T extended status */
+/*
+ * if autoneg is disabled, here's the table:
+ * BMCR_SPEED100 = 100Mbps
+ * BMCR_SPEED1000 = 1000Mbps
+ * ~(BMCR_SPEED100 | BMCR_SPEED1000) = 10Mbps
+ */
+#define   CAS_BMCR_SPEED1000      0x0040  /* Select 1000Mbps */
+
+#define   CAS_ADVERTISE_1000HALF   0x0100
+#define   CAS_ADVERTISE_1000FULL   0x0200
+#define   CAS_ADVERTISE_PAUSE      0x0400
+#define   CAS_ADVERTISE_ASYM_PAUSE 0x0800
+
+/* regular lpa register */
+#define   CAS_LPA_PAUSE	           CAS_ADVERTISE_PAUSE
+#define   CAS_LPA_ASYM_PAUSE       CAS_ADVERTISE_ASYM_PAUSE
+
+/* 1000_STATUS register */
+#define   CAS_LPA_1000HALF        0x0400
+#define   CAS_LPA_1000FULL        0x0800
+
+#define   CAS_EXTEND_1000XFULL    0x8000
+#define   CAS_EXTEND_1000XHALF    0x4000
+#define   CAS_EXTEND_1000TFULL    0x2000
+#define   CAS_EXTEND_1000THALF    0x1000
+
+/* cassini header parser firmware */
+typedef struct cas_hp_inst {
+	const char *note;
+
+	u16 mask, val;
+
+	u8 op;
+	u8 soff, snext;	/* if match succeeds, new offset and match */
+	u8 foff, fnext;	/* if match fails, new offset and match */
+	/* output info */
+	u8 outop;    /* output opcode */
+
+	u16 outarg;  /* output argument */
+	u8 outenab;  /* output enable: 0 = not, 1 = if match
+			 2 = if !match, 3 = always */
+	u8 outshift; /* barrel shift right, 4 bits */
+	u16 outmask;
+} cas_hp_inst_t;
+
+/* comparison */
+#define OP_EQ     0 /* packet == value */
+#define OP_LT     1 /* packet < value */
+#define OP_GT     2 /* packet > value */
+#define OP_NP     3 /* new packet */
+
+/* output opcodes */
+#define	CL_REG	0
+#define	LD_FID	1
+#define	LD_SEQ	2
+#define	LD_CTL	3
+#define	LD_SAP	4
+#define	LD_R1	5
+#define	LD_L3	6
+#define	LD_SUM	7
+#define	LD_HDR	8
+#define	IM_FID	9
+#define	IM_SEQ	10
+#define	IM_SAP	11
+#define	IM_R1	12
+#define	IM_CTL	13
+#define	LD_LEN	14
+#define	ST_FLG	15
+
+/* match setp #s for IP4TCP4 */
+#define S1_PCKT         0
+#define S1_VLAN         1
+#define S1_CFI          2
+#define S1_8023         3
+#define S1_LLC          4
+#define S1_LLCc         5
+#define S1_IPV4         6
+#define S1_IPV4c        7
+#define S1_IPV4F        8
+#define S1_TCP44        9
+#define S1_IPV6         10
+#define S1_IPV6L        11
+#define S1_IPV6c        12
+#define S1_TCP64        13
+#define S1_TCPSQ        14
+#define S1_TCPFG        15
+#define	S1_TCPHL	16
+#define	S1_TCPHc	17
+#define	S1_CLNP		18
+#define	S1_CLNP2	19
+#define	S1_DROP		20
+#define	S2_HTTP		21
+#define	S1_ESP4		22
+#define	S1_AH4		23
+#define	S1_ESP6		24
+#define	S1_AH6		25
+
+#define CAS_PROG_IP46TCP4_PREAMBLE \
+{ "packet arrival?", 0xffff, 0x0000, OP_NP,  6, S1_VLAN,  0, S1_PCKT,  \
+  CL_REG, 0x3ff, 1, 0x0, 0x0000}, \
+{ "VLAN?", 0xffff, 0x8100, OP_EQ,  1, S1_CFI,   0, S1_8023,  \
+  IM_CTL, 0x00a,  3, 0x0, 0xffff}, \
+{ "CFI?", 0x1000, 0x1000, OP_EQ,  0, S1_DROP,  1, S1_8023, \
+  CL_REG, 0x000,  0, 0x0, 0x0000}, \
+{ "8023?", 0xffff, 0x0600, OP_LT,  1, S1_LLC,   0, S1_IPV4, \
+  CL_REG, 0x000,  0, 0x0, 0x0000}, \
+{ "LLC?", 0xffff, 0xaaaa, OP_EQ,  1, S1_LLCc,  0, S1_CLNP, \
+  CL_REG, 0x000,  0, 0x0, 0x0000}, \
+{ "LLCc?", 0xff00, 0x0300, OP_EQ,  2, S1_IPV4,  0, S1_CLNP, \
+  CL_REG, 0x000,  0, 0x0, 0x0000}, \
+{ "IPV4?", 0xffff, 0x0800, OP_EQ,  1, S1_IPV4c, 0, S1_IPV6, \
+  LD_SAP, 0x100,  3, 0x0, 0xffff}, \
+{ "IPV4 cont?", 0xff00, 0x4500, OP_EQ,  3, S1_IPV4F, 0, S1_CLNP, \
+  LD_SUM, 0x00a,  1, 0x0, 0x0000}, \
+{ "IPV4 frag?", 0x3fff, 0x0000, OP_EQ,  1, S1_TCP44, 0, S1_CLNP, \
+  LD_LEN, 0x03e,  1, 0x0, 0xffff}, \
+{ "TCP44?", 0x00ff, 0x0006, OP_EQ,  7, S1_TCPSQ, 0, S1_CLNP, \
+  LD_FID, 0x182,  1, 0x0, 0xffff}, /* FID IP4&TCP src+dst */ \
+{ "IPV6?", 0xffff, 0x86dd, OP_EQ,  1, S1_IPV6L, 0, S1_CLNP,  \
+  LD_SUM, 0x015,  1, 0x0, 0x0000}, \
+{ "IPV6 len", 0xf000, 0x6000, OP_EQ,  0, S1_IPV6c, 0, S1_CLNP, \
+  IM_R1,  0x128,  1, 0x0, 0xffff}, \
+{ "IPV6 cont?", 0x0000, 0x0000, OP_EQ,  3, S1_TCP64, 0, S1_CLNP, \
+  LD_FID, 0x484,  1, 0x0, 0xffff}, /* FID IP6&TCP src+dst */ \
+{ "TCP64?", 0xff00, 0x0600, OP_EQ, 18, S1_TCPSQ, 0, S1_CLNP, \
+  LD_LEN, 0x03f,  1, 0x0, 0xffff}
+
+#ifdef USE_HP_IP46TCP4
+static cas_hp_inst_t cas_prog_ip46tcp4tab[] = {
+	CAS_PROG_IP46TCP4_PREAMBLE,
+	{ "TCP seq", /* DADDR should point to dest port */
+	  0x0000, 0x0000, OP_EQ, 0, S1_TCPFG, 4, S1_TCPFG, LD_SEQ,
+	  0x081,  3, 0x0, 0xffff}, /* Load TCP seq # */
+	{ "TCP control flags", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHL, 0,
+	  S1_TCPHL, ST_FLG, 0x045,  3, 0x0, 0x002f}, /* Load TCP flags */
+	{ "TCP length", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHc, 0,
+	  S1_TCPHc, LD_R1,  0x205,  3, 0xB, 0xf000},
+	{ "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0,
+	  S1_PCKT,  LD_HDR, 0x0ff,  3, 0x0, 0xffff},
+	{ "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_CLNP2,  0, S1_CLNP2,
+	  IM_CTL, 0x001,  3, 0x0, 0x0001},
+	{ "Cleanup 2", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  IM_CTL, 0x000,  0, 0x0, 0x0000},
+	{ "Drop packet", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  IM_CTL, 0x080,  3, 0x0, 0xffff},
+	{ NULL },
+};
+#ifdef HP_IP46TCP4_DEFAULT
+#define CAS_HP_FIRMWARE               cas_prog_ip46tcp4tab
+#endif
+#endif
+
+/*
+ * Alternate table load which excludes HTTP server traffic from reassembly.
+ * It is substantially similar to the basic table, with one extra state
+ * and a few extra compares. */
+#ifdef USE_HP_IP46TCP4NOHTTP
+static cas_hp_inst_t cas_prog_ip46tcp4nohttptab[] = {
+	CAS_PROG_IP46TCP4_PREAMBLE,
+	{ "TCP seq", /* DADDR should point to dest port */
+	  0xFFFF, 0x0080, OP_EQ,  0, S2_HTTP,  0, S1_TCPFG, LD_SEQ,
+	  0x081,  3, 0x0, 0xffff} , /* Load TCP seq # */
+	{ "TCP control flags", 0xFFFF, 0x8080, OP_EQ,  0, S2_HTTP,  0,
+	  S1_TCPHL, ST_FLG, 0x145,  2, 0x0, 0x002f, }, /* Load TCP flags */
+	{ "TCP length", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHc, 0, S1_TCPHc,
+	  LD_R1,  0x205,  3, 0xB, 0xf000},
+	{ "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  LD_HDR, 0x0ff,  3, 0x0, 0xffff},
+	{ "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_CLNP2,  0, S1_CLNP2,
+	  IM_CTL, 0x001,  3, 0x0, 0x0001},
+	{ "Cleanup 2", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  CL_REG, 0x002,  3, 0x0, 0x0000},
+	{ "Drop packet", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  IM_CTL, 0x080,  3, 0x0, 0xffff},
+	{ "No HTTP", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  IM_CTL, 0x044,  3, 0x0, 0xffff},
+	{ NULL },
+};
+#ifdef HP_IP46TCP4NOHTTP_DEFAULT
+#define CAS_HP_FIRMWARE               cas_prog_ip46tcp4nohttptab
+#endif
+#endif
+
+/* match step #s for IP4FRAG */
+#define	S3_IPV6c	11
+#define	S3_TCP64	12
+#define	S3_TCPSQ	13
+#define	S3_TCPFG	14
+#define	S3_TCPHL	15
+#define	S3_TCPHc	16
+#define	S3_FRAG		17
+#define	S3_FOFF		18
+#define	S3_CLNP		19
+
+#ifdef USE_HP_IP4FRAG
+static cas_hp_inst_t cas_prog_ip4fragtab[] = {
+	{ "packet arrival?", 0xffff, 0x0000, OP_NP,  6, S1_VLAN,  0, S1_PCKT,
+	  CL_REG, 0x3ff, 1, 0x0, 0x0000},
+	{ "VLAN?", 0xffff, 0x8100, OP_EQ,  1, S1_CFI,   0, S1_8023,
+	  IM_CTL, 0x00a,  3, 0x0, 0xffff},
+	{ "CFI?", 0x1000, 0x1000, OP_EQ,  0, S3_CLNP,  1, S1_8023,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "8023?", 0xffff, 0x0600, OP_LT,  1, S1_LLC,   0, S1_IPV4,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "LLC?", 0xffff, 0xaaaa, OP_EQ,  1, S1_LLCc,  0, S3_CLNP,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "LLCc?",0xff00, 0x0300, OP_EQ,  2, S1_IPV4,  0, S3_CLNP,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "IPV4?", 0xffff, 0x0800, OP_EQ,  1, S1_IPV4c, 0, S1_IPV6,
+	  LD_SAP, 0x100,  3, 0x0, 0xffff},
+	{ "IPV4 cont?", 0xff00, 0x4500, OP_EQ,  3, S1_IPV4F, 0, S3_CLNP,
+	  LD_SUM, 0x00a,  1, 0x0, 0x0000},
+	{ "IPV4 frag?", 0x3fff, 0x0000, OP_EQ,  1, S1_TCP44, 0, S3_FRAG,
+	  LD_LEN, 0x03e,  3, 0x0, 0xffff},
+	{ "TCP44?", 0x00ff, 0x0006, OP_EQ,  7, S3_TCPSQ, 0, S3_CLNP,
+	  LD_FID, 0x182,  3, 0x0, 0xffff}, /* FID IP4&TCP src+dst */
+	{ "IPV6?", 0xffff, 0x86dd, OP_EQ,  1, S3_IPV6c, 0, S3_CLNP,
+	  LD_SUM, 0x015,  1, 0x0, 0x0000},
+	{ "IPV6 cont?", 0xf000, 0x6000, OP_EQ,  3, S3_TCP64, 0, S3_CLNP,
+	  LD_FID, 0x484,  1, 0x0, 0xffff}, /* FID IP6&TCP src+dst */
+	{ "TCP64?", 0xff00, 0x0600, OP_EQ, 18, S3_TCPSQ, 0, S3_CLNP,
+	  LD_LEN, 0x03f,  1, 0x0, 0xffff},
+	{ "TCP seq",	/* DADDR should point to dest port */
+	  0x0000, 0x0000, OP_EQ,  0, S3_TCPFG, 4, S3_TCPFG, LD_SEQ,
+	  0x081,  3, 0x0, 0xffff}, /* Load TCP seq # */
+	{ "TCP control flags", 0x0000, 0x0000, OP_EQ,  0, S3_TCPHL, 0,
+	  S3_TCPHL, ST_FLG, 0x045,  3, 0x0, 0x002f}, /* Load TCP flags */
+	{ "TCP length", 0x0000, 0x0000, OP_EQ,  0, S3_TCPHc, 0, S3_TCPHc,
+	  LD_R1,  0x205,  3, 0xB, 0xf000},
+	{ "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  LD_HDR, 0x0ff,  3, 0x0, 0xffff},
+	{ "IP4 Fragment", 0x0000, 0x0000, OP_EQ,  0, S3_FOFF,  0, S3_FOFF,
+	  LD_FID, 0x103,  3, 0x0, 0xffff}, /* FID IP4 src+dst */
+	{ "IP4 frag offset", 0x0000, 0x0000, OP_EQ,  0, S3_FOFF,  0, S3_FOFF,
+	  LD_SEQ, 0x040,  1, 0xD, 0xfff8},
+	{ "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  IM_CTL, 0x001,  3, 0x0, 0x0001},
+	{ NULL },
+};
+#ifdef HP_IP4FRAG_DEFAULT
+#define CAS_HP_FIRMWARE               cas_prog_ip4fragtab
+#endif
+#endif
+
+/*
+ * Alternate table which does batching without reassembly
+ */
+#ifdef USE_HP_IP46TCP4BATCH
+static cas_hp_inst_t cas_prog_ip46tcp4batchtab[] = {
+	CAS_PROG_IP46TCP4_PREAMBLE,
+	{ "TCP seq",	/* DADDR should point to dest port */
+	  0x0000, 0x0000, OP_EQ,  0, S1_TCPFG, 0, S1_TCPFG, LD_SEQ,
+	  0x081,  3, 0x0, 0xffff}, /* Load TCP seq # */
+	{ "TCP control flags", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHL, 0,
+	  S1_TCPHL, ST_FLG, 0x000,  3, 0x0, 0x0000}, /* Load TCP flags */
+	{ "TCP length", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHc, 0,
+	  S1_TCPHc, LD_R1,  0x205,  3, 0xB, 0xf000},
+	{ "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0,
+	  S1_PCKT,  IM_CTL, 0x040,  3, 0x0, 0xffff}, /* set batch bit */
+	{ "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  IM_CTL, 0x001,  3, 0x0, 0x0001},
+	{ "Drop packet", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0,
+	  S1_PCKT,  IM_CTL, 0x080,  3, 0x0, 0xffff},
+	{ NULL },
+};
+#ifdef HP_IP46TCP4BATCH_DEFAULT
+#define CAS_HP_FIRMWARE               cas_prog_ip46tcp4batchtab
+#endif
+#endif
+
+/* Workaround for Cassini rev2 descriptor corruption problem.
+ * Does batching without reassembly, and sets the SAP to a known
+ * data pattern for all packets.
+ */
+#ifdef USE_HP_WORKAROUND
+static cas_hp_inst_t  cas_prog_workaroundtab[] = {
+	{ "packet arrival?", 0xffff, 0x0000, OP_NP,  6, S1_VLAN,  0,
+	  S1_PCKT,  CL_REG, 0x3ff,  1, 0x0, 0x0000} ,
+	{ "VLAN?", 0xffff, 0x8100, OP_EQ,  1, S1_CFI, 0, S1_8023,
+	  IM_CTL, 0x04a,  3, 0x0, 0xffff},
+	{ "CFI?", 0x1000, 0x1000, OP_EQ,  0, S1_CLNP,  1, S1_8023,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "8023?", 0xffff, 0x0600, OP_LT,  1, S1_LLC,   0, S1_IPV4,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "LLC?", 0xffff, 0xaaaa, OP_EQ,  1, S1_LLCc,  0, S1_CLNP,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "LLCc?", 0xff00, 0x0300, OP_EQ,  2, S1_IPV4,  0, S1_CLNP,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "IPV4?", 0xffff, 0x0800, OP_EQ,  1, S1_IPV4c, 0, S1_IPV6,
+	  IM_SAP, 0x6AE,  3, 0x0, 0xffff},
+	{ "IPV4 cont?", 0xff00, 0x4500, OP_EQ,  3, S1_IPV4F, 0, S1_CLNP,
+	  LD_SUM, 0x00a,  1, 0x0, 0x0000},
+	{ "IPV4 frag?", 0x3fff, 0x0000, OP_EQ,  1, S1_TCP44, 0, S1_CLNP,
+	  LD_LEN, 0x03e,  1, 0x0, 0xffff},
+	{ "TCP44?", 0x00ff, 0x0006, OP_EQ,  7, S1_TCPSQ, 0, S1_CLNP,
+	  LD_FID, 0x182,  3, 0x0, 0xffff}, /* FID IP4&TCP src+dst */
+	{ "IPV6?", 0xffff, 0x86dd, OP_EQ,  1, S1_IPV6L, 0, S1_CLNP,
+	  LD_SUM, 0x015,  1, 0x0, 0x0000},
+	{ "IPV6 len", 0xf000, 0x6000, OP_EQ,  0, S1_IPV6c, 0, S1_CLNP,
+	  IM_R1,  0x128,  1, 0x0, 0xffff},
+	{ "IPV6 cont?", 0x0000, 0x0000, OP_EQ,  3, S1_TCP64, 0, S1_CLNP,
+	  LD_FID, 0x484,  1, 0x0, 0xffff}, /* FID IP6&TCP src+dst */
+	{ "TCP64?", 0xff00, 0x0600, OP_EQ, 18, S1_TCPSQ, 0, S1_CLNP,
+	  LD_LEN, 0x03f,  1, 0x0, 0xffff},
+	{ "TCP seq",      /* DADDR should point to dest port */
+	  0x0000, 0x0000, OP_EQ,  0, S1_TCPFG, 4, S1_TCPFG, LD_SEQ,
+	  0x081,  3, 0x0, 0xffff}, /* Load TCP seq # */
+	{ "TCP control flags", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHL, 0,
+	  S1_TCPHL, ST_FLG, 0x045,  3, 0x0, 0x002f}, /* Load TCP flags */
+	{ "TCP length", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHc, 0, S1_TCPHc,
+	  LD_R1,  0x205,  3, 0xB, 0xf000},
+	{ "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0,
+	  S1_PCKT,  LD_HDR, 0x0ff,  3, 0x0, 0xffff},
+	{ "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_CLNP2, 0, S1_CLNP2,
+	  IM_SAP, 0x6AE,  3, 0x0, 0xffff} ,
+	{ "Cleanup 2", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  IM_CTL, 0x001,  3, 0x0, 0x0001},
+	{ NULL },
+};
+#ifdef HP_WORKAROUND_DEFAULT
+#define CAS_HP_FIRMWARE               cas_prog_workaroundtab
+#endif
+#endif
+
+#ifdef USE_HP_ENCRYPT
+static cas_hp_inst_t  cas_prog_encryptiontab[] = {
+	{ "packet arrival?", 0xffff, 0x0000, OP_NP,  6, S1_VLAN,  0,
+	  S1_PCKT,  CL_REG, 0x3ff,  1, 0x0, 0x0000},
+	{ "VLAN?", 0xffff, 0x8100, OP_EQ,  1, S1_CFI,   0, S1_8023,
+	  IM_CTL, 0x00a,  3, 0x0, 0xffff},
+#if 0
+//"CFI?", /* 02 FIND CFI and If FIND go to S1_DROP */
+//0x1000, 0x1000, OP_EQ,  0, S1_DROP,  1, S1_8023,  CL_REG, 0x000,  0, 0x0, 0x00
+	00,
+#endif
+	{ "CFI?", /* FIND CFI and If FIND go to CleanUP1 (ignore and send to host) */
+	  0x1000, 0x1000, OP_EQ,  0, S1_CLNP,  1, S1_8023,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "8023?", 0xffff, 0x0600, OP_LT,  1, S1_LLC,   0, S1_IPV4,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "LLC?", 0xffff, 0xaaaa, OP_EQ,  1, S1_LLCc,  0, S1_CLNP,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "LLCc?", 0xff00, 0x0300, OP_EQ,  2, S1_IPV4,  0, S1_CLNP,
+	  CL_REG, 0x000,  0, 0x0, 0x0000},
+	{ "IPV4?", 0xffff, 0x0800, OP_EQ,  1, S1_IPV4c, 0, S1_IPV6,
+	  LD_SAP, 0x100,  3, 0x0, 0xffff},
+	{ "IPV4 cont?", 0xff00, 0x4500, OP_EQ,  3, S1_IPV4F, 0, S1_CLNP,
+	  LD_SUM, 0x00a,  1, 0x0, 0x0000},
+	{ "IPV4 frag?", 0x3fff, 0x0000, OP_EQ,  1, S1_TCP44, 0, S1_CLNP,
+	  LD_LEN, 0x03e,  1, 0x0, 0xffff},
+	{ "TCP44?", 0x00ff, 0x0006, OP_EQ,  7, S1_TCPSQ, 0, S1_ESP4,
+	  LD_FID, 0x182,  1, 0x0, 0xffff}, /* FID IP4&TCP src+dst */
+	{ "IPV6?", 0xffff, 0x86dd, OP_EQ,  1, S1_IPV6L, 0, S1_CLNP,
+	  LD_SUM, 0x015,  1, 0x0, 0x0000},
+	{ "IPV6 len", 0xf000, 0x6000, OP_EQ,  0, S1_IPV6c, 0, S1_CLNP,
+	  IM_R1,  0x128,  1, 0x0, 0xffff},
+	{ "IPV6 cont?", 0x0000, 0x0000, OP_EQ,  3, S1_TCP64, 0, S1_CLNP,
+	  LD_FID, 0x484,  1, 0x0, 0xffff}, /*  FID IP6&TCP src+dst */
+	{ "TCP64?",
+#if 0
+//@@@0xff00, 0x0600, OP_EQ, 18, S1_TCPSQ, 0, S1_ESP6,  LD_LEN, 0x03f,  1, 0x0, 0xffff,
+#endif
+	  0xff00, 0x0600, OP_EQ, 12, S1_TCPSQ, 0, S1_ESP6,  LD_LEN,
+	  0x03f,  1, 0x0, 0xffff},
+	{ "TCP seq", /* 14:DADDR should point to dest port */
+	  0xFFFF, 0x0080, OP_EQ,  0, S2_HTTP,  0, S1_TCPFG, LD_SEQ,
+	  0x081,  3, 0x0, 0xffff}, /* Load TCP seq # */
+	{ "TCP control flags", 0xFFFF, 0x8080, OP_EQ,  0, S2_HTTP,  0,
+	  S1_TCPHL, ST_FLG, 0x145,  2, 0x0, 0x002f}, /* Load TCP flags */
+	{ "TCP length", 0x0000, 0x0000, OP_EQ,  0, S1_TCPHc, 0, S1_TCPHc,
+	  LD_R1,  0x205,  3, 0xB, 0xf000} ,
+	{ "TCP length cont", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0,
+	  S1_PCKT,  LD_HDR, 0x0ff,  3, 0x0, 0xffff},
+	{ "Cleanup", 0x0000, 0x0000, OP_EQ,  0, S1_CLNP2,  0, S1_CLNP2,
+	  IM_CTL, 0x001,  3, 0x0, 0x0001},
+	{ "Cleanup 2", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  CL_REG, 0x002,  3, 0x0, 0x0000},
+	{ "Drop packet", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  IM_CTL, 0x080,  3, 0x0, 0xffff},
+	{ "No HTTP", 0x0000, 0x0000, OP_EQ,  0, S1_PCKT,  0, S1_PCKT,
+	  IM_CTL, 0x044,  3, 0x0, 0xffff},
+	{ "IPV4 ESP encrypted?",  /* S1_ESP4 */
+	  0x00ff, 0x0032, OP_EQ,  0, S1_CLNP2, 0, S1_AH4, IM_CTL,
+	  0x021, 1,  0x0, 0xffff},
+	{ "IPV4 AH encrypted?",   /* S1_AH4 */
+	  0x00ff, 0x0033, OP_EQ,  0, S1_CLNP2, 0, S1_CLNP, IM_CTL,
+	  0x021, 1,  0x0, 0xffff},
+	{ "IPV6 ESP encrypted?",  /* S1_ESP6 */
+#if 0
+//@@@0x00ff, 0x0032, OP_EQ,  0, S1_CLNP2, 0, S1_AH6, IM_CTL, 0x021, 1,  0x0, 0xffff,
+#endif
+	  0xff00, 0x3200, OP_EQ,  0, S1_CLNP2, 0, S1_AH6, IM_CTL,
+	  0x021, 1,  0x0, 0xffff},
+	{ "IPV6 AH encrypted?",   /* S1_AH6 */
+#if 0
+//@@@0x00ff, 0x0033, OP_EQ,  0, S1_CLNP2, 0, S1_CLNP, IM_CTL, 0x021, 1,  0x0, 0xffff,
+#endif
+	  0xff00, 0x3300, OP_EQ,  0, S1_CLNP2, 0, S1_CLNP, IM_CTL,
+	  0x021, 1,  0x0, 0xffff},
+	{ NULL },
+};
+#ifdef HP_ENCRYPT_DEFAULT
+#define CAS_HP_FIRMWARE               cas_prog_encryptiontab
+#endif
+#endif
+
+static cas_hp_inst_t cas_prog_null[] = { {NULL} };
+#ifdef HP_NULL_DEFAULT
+#define CAS_HP_FIRMWARE               cas_prog_null
+#endif
+
+/* phy types */
+#define   CAS_PHY_UNKNOWN       0x00
+#define   CAS_PHY_SERDES        0x01
+#define   CAS_PHY_MII_MDIO0     0x02
+#define   CAS_PHY_MII_MDIO1     0x04
+#define   CAS_PHY_MII(x)        ((x) & (CAS_PHY_MII_MDIO0 | CAS_PHY_MII_MDIO1))
+
+/* _RING_INDEX is the index for the ring sizes to be used.  _RING_SIZE
+ * is the actual size. the default index for the various rings is
+ * 8. NOTE: there a bunch of alignment constraints for the rings. to
+ * deal with that, i just allocate rings to create the desired
+ * alignment. here are the constraints:
+ *   RX DESC and COMP rings must be 8KB aligned
+ *   TX DESC must be 2KB aligned.
+ * if you change the numbers, be cognizant of how the alignment will change
+ * in INIT_BLOCK as well.
+ */
+
+#define DESC_RING_I_TO_S(x)  (32*(1 << (x)))
+#define COMP_RING_I_TO_S(x)  (128*(1 << (x)))
+#define TX_DESC_RING_INDEX 4  /* 512 = 8k */
+#define RX_DESC_RING_INDEX 4  /* 512 = 8k */
+#define RX_COMP_RING_INDEX 4  /* 2048 = 64k: should be 4x rx ring size */
+
+#if (TX_DESC_RING_INDEX > 8) || (TX_DESC_RING_INDEX < 0)
+#error TX_DESC_RING_INDEX must be between 0 and 8
+#endif
+
+#if (RX_DESC_RING_INDEX > 8) || (RX_DESC_RING_INDEX < 0)
+#error RX_DESC_RING_INDEX must be between 0 and 8
+#endif
+
+#if (RX_COMP_RING_INDEX > 8) || (RX_COMP_RING_INDEX < 0)
+#error RX_COMP_RING_INDEX must be between 0 and 8
+#endif
+
+#define N_TX_RINGS                    MAX_TX_RINGS      /* for QoS */
+#define N_TX_RINGS_MASK               MAX_TX_RINGS_MASK
+#define N_RX_DESC_RINGS               MAX_RX_DESC_RINGS /* 1 for ipsec */
+#define N_RX_COMP_RINGS               0x1 /* for mult. PCI interrupts */
+
+/* number of flows that can go through re-assembly */
+#define N_RX_FLOWS                    64
+
+#define TX_DESC_RING_SIZE  DESC_RING_I_TO_S(TX_DESC_RING_INDEX)
+#define RX_DESC_RING_SIZE  DESC_RING_I_TO_S(RX_DESC_RING_INDEX)
+#define RX_COMP_RING_SIZE  COMP_RING_I_TO_S(RX_COMP_RING_INDEX)
+#define TX_DESC_RINGN_INDEX(x) TX_DESC_RING_INDEX
+#define RX_DESC_RINGN_INDEX(x) RX_DESC_RING_INDEX
+#define RX_COMP_RINGN_INDEX(x) RX_COMP_RING_INDEX
+#define TX_DESC_RINGN_SIZE(x)  TX_DESC_RING_SIZE
+#define RX_DESC_RINGN_SIZE(x)  RX_DESC_RING_SIZE
+#define RX_COMP_RINGN_SIZE(x)  RX_COMP_RING_SIZE
+
+/* convert values */
+#define CAS_BASE(x, y)                (((y) << (x ## _SHIFT)) & (x ## _MASK))
+#define CAS_VAL(x, y)                 (((y) & (x ## _MASK)) >> (x ## _SHIFT))
+#define CAS_TX_RINGN_BASE(y)          ((TX_DESC_RINGN_INDEX(y) << \
+                                        TX_CFG_DESC_RINGN_SHIFT(y)) & \
+                                        TX_CFG_DESC_RINGN_MASK(y))
+
+/* min is 2k, but we can't do jumbo frames unless it's at least 8k */
+#define CAS_MIN_PAGE_SHIFT            11 /* 2048 */
+#define CAS_JUMBO_PAGE_SHIFT          13 /* 8192 */
+#define CAS_MAX_PAGE_SHIFT            14 /* 16384 */
+
+#define TX_DESC_BUFLEN_MASK         0x0000000000003FFFULL /* buffer length in
+							     bytes. 0 - 9256 */
+#define TX_DESC_BUFLEN_SHIFT        0
+#define TX_DESC_CSUM_START_MASK     0x00000000001F8000ULL /* checksum start. #
+							     of bytes to be
+							     skipped before
+							     csum calc begins.
+							     value must be
+							     even */
+#define TX_DESC_CSUM_START_SHIFT    15
+#define TX_DESC_CSUM_STUFF_MASK     0x000000001FE00000ULL /* checksum stuff.
+							     byte offset w/in
+							     the pkt for the
+							     1st csum byte.
+							     must be > 8 */
+#define TX_DESC_CSUM_STUFF_SHIFT    21
+#define TX_DESC_CSUM_EN             0x0000000020000000ULL /* enable checksum */
+#define TX_DESC_EOF                 0x0000000040000000ULL /* end of frame */
+#define TX_DESC_SOF                 0x0000000080000000ULL /* start of frame */
+#define TX_DESC_INTME               0x0000000100000000ULL /* interrupt me */
+#define TX_DESC_NO_CRC              0x0000000200000000ULL /* debugging only.
+							     CRC will not be
+							     inserted into
+							     outgoing frame. */
+struct cas_tx_desc {
+	__le64     control;
+	__le64     buffer;
+};
+
+/* descriptor ring for free buffers contains page-sized buffers. the index
+ * value is not used by the hw in any way. it's just stored and returned in
+ * the completion ring.
+ */
+struct cas_rx_desc {
+	__le64     index;
+	__le64     buffer;
+};
+
+/* received packets are put on the completion ring. */
+/* word 1 */
+#define RX_COMP1_DATA_SIZE_MASK           0x0000000007FFE000ULL
+#define RX_COMP1_DATA_SIZE_SHIFT          13
+#define RX_COMP1_DATA_OFF_MASK            0x000001FFF8000000ULL
+#define RX_COMP1_DATA_OFF_SHIFT           27
+#define RX_COMP1_DATA_INDEX_MASK          0x007FFE0000000000ULL
+#define RX_COMP1_DATA_INDEX_SHIFT         41
+#define RX_COMP1_SKIP_MASK                0x0180000000000000ULL
+#define RX_COMP1_SKIP_SHIFT               55
+#define RX_COMP1_RELEASE_NEXT             0x0200000000000000ULL
+#define RX_COMP1_SPLIT_PKT                0x0400000000000000ULL
+#define RX_COMP1_RELEASE_FLOW             0x0800000000000000ULL
+#define RX_COMP1_RELEASE_DATA             0x1000000000000000ULL
+#define RX_COMP1_RELEASE_HDR              0x2000000000000000ULL
+#define RX_COMP1_TYPE_MASK                0xC000000000000000ULL
+#define RX_COMP1_TYPE_SHIFT               62
+
+/* word 2 */
+#define RX_COMP2_NEXT_INDEX_MASK          0x00000007FFE00000ULL
+#define RX_COMP2_NEXT_INDEX_SHIFT         21
+#define RX_COMP2_HDR_SIZE_MASK            0x00000FF800000000ULL
+#define RX_COMP2_HDR_SIZE_SHIFT           35
+#define RX_COMP2_HDR_OFF_MASK             0x0003F00000000000ULL
+#define RX_COMP2_HDR_OFF_SHIFT            44
+#define RX_COMP2_HDR_INDEX_MASK           0xFFFC000000000000ULL
+#define RX_COMP2_HDR_INDEX_SHIFT          50
+
+/* word 3 */
+#define RX_COMP3_SMALL_PKT                0x0000000000000001ULL
+#define RX_COMP3_JUMBO_PKT                0x0000000000000002ULL
+#define RX_COMP3_JUMBO_HDR_SPLIT_EN       0x0000000000000004ULL
+#define RX_COMP3_CSUM_START_MASK          0x000000000007F000ULL
+#define RX_COMP3_CSUM_START_SHIFT         12
+#define RX_COMP3_FLOWID_MASK              0x0000000001F80000ULL
+#define RX_COMP3_FLOWID_SHIFT             19
+#define RX_COMP3_OPCODE_MASK              0x000000000E000000ULL
+#define RX_COMP3_OPCODE_SHIFT             25
+#define RX_COMP3_FORCE_FLAG               0x0000000010000000ULL
+#define RX_COMP3_NO_ASSIST                0x0000000020000000ULL
+#define RX_COMP3_LOAD_BAL_MASK            0x000001F800000000ULL
+#define RX_COMP3_LOAD_BAL_SHIFT           35
+#define RX_PLUS_COMP3_ENC_PKT             0x0000020000000000ULL /* cas+ */
+#define RX_COMP3_L3_HEAD_OFF_MASK         0x0000FE0000000000ULL /* cas */
+#define RX_COMP3_L3_HEAD_OFF_SHIFT        41
+#define RX_PLUS_COMP_L3_HEAD_OFF_MASK     0x0000FC0000000000ULL /* cas+ */
+#define RX_PLUS_COMP_L3_HEAD_OFF_SHIFT    42
+#define RX_COMP3_SAP_MASK                 0xFFFF000000000000ULL
+#define RX_COMP3_SAP_SHIFT                48
+
+/* word 4 */
+#define RX_COMP4_TCP_CSUM_MASK            0x000000000000FFFFULL
+#define RX_COMP4_TCP_CSUM_SHIFT           0
+#define RX_COMP4_PKT_LEN_MASK             0x000000003FFF0000ULL
+#define RX_COMP4_PKT_LEN_SHIFT            16
+#define RX_COMP4_PERFECT_MATCH_MASK       0x00000003C0000000ULL
+#define RX_COMP4_PERFECT_MATCH_SHIFT      30
+#define RX_COMP4_ZERO                     0x0000080000000000ULL
+#define RX_COMP4_HASH_VAL_MASK            0x0FFFF00000000000ULL
+#define RX_COMP4_HASH_VAL_SHIFT           44
+#define RX_COMP4_HASH_PASS                0x1000000000000000ULL
+#define RX_COMP4_BAD                      0x4000000000000000ULL
+#define RX_COMP4_LEN_MISMATCH             0x8000000000000000ULL
+
+/* we encode the following: ring/index/release. only 14 bits
+ * are usable.
+ * NOTE: the encoding is dependent upon RX_DESC_RING_SIZE and
+ *       MAX_RX_DESC_RINGS. */
+#define RX_INDEX_NUM_MASK                 0x0000000000000FFFULL
+#define RX_INDEX_NUM_SHIFT                0
+#define RX_INDEX_RING_MASK                0x0000000000001000ULL
+#define RX_INDEX_RING_SHIFT               12
+#define RX_INDEX_RELEASE                  0x0000000000002000ULL
+
+struct cas_rx_comp {
+	__le64     word1;
+	__le64     word2;
+	__le64     word3;
+	__le64     word4;
+};
+
+enum link_state {
+	link_down = 0,	/* No link, will retry */
+	link_aneg,	/* Autoneg in progress */
+	link_force_try,	/* Try Forced link speed */
+	link_force_ret,	/* Forced mode worked, retrying autoneg */
+	link_force_ok,	/* Stay in forced mode */
+	link_up		/* Link is up */
+};
+
+typedef struct cas_page {
+	struct list_head list;
+	struct page *buffer;
+	dma_addr_t dma_addr;
+	int used;
+} cas_page_t;
+
+
+/* some alignment constraints:
+ * TX DESC, RX DESC, and RX COMP must each be 8K aligned.
+ * TX COMPWB must be 8-byte aligned.
+ * to accomplish this, here's what we do:
+ *
+ * INIT_BLOCK_RX_COMP  = 64k (already aligned)
+ * INIT_BLOCK_RX_DESC  = 8k
+ * INIT_BLOCK_TX       = 8k
+ * INIT_BLOCK_RX1_DESC = 8k
+ * TX COMPWB
+ */
+#define INIT_BLOCK_TX           (TX_DESC_RING_SIZE)
+#define INIT_BLOCK_RX_DESC      (RX_DESC_RING_SIZE)
+#define INIT_BLOCK_RX_COMP      (RX_COMP_RING_SIZE)
+
+struct cas_init_block {
+	struct cas_rx_comp rxcs[N_RX_COMP_RINGS][INIT_BLOCK_RX_COMP];
+	struct cas_rx_desc rxds[N_RX_DESC_RINGS][INIT_BLOCK_RX_DESC];
+	struct cas_tx_desc txds[N_TX_RINGS][INIT_BLOCK_TX];
+	__le64 tx_compwb;
+};
+
+/* tiny buffers to deal with target abort issue. we allocate a bit
+ * over so that we don't have target abort issues with these buffers
+ * as well.
+ */
+#define TX_TINY_BUF_LEN    0x100
+#define TX_TINY_BUF_BLOCK  ((INIT_BLOCK_TX + 1)*TX_TINY_BUF_LEN)
+
+struct cas_tiny_count {
+	int nbufs;
+	int used;
+};
+
+struct cas {
+	spinlock_t lock; /* for most bits */
+	spinlock_t tx_lock[N_TX_RINGS]; /* tx bits */
+	spinlock_t stat_lock[N_TX_RINGS + 1]; /* for stat gathering */
+	spinlock_t rx_inuse_lock; /* rx inuse list */
+	spinlock_t rx_spare_lock; /* rx spare list */
+
+	void __iomem *regs;
+	int tx_new[N_TX_RINGS], tx_old[N_TX_RINGS];
+	int rx_old[N_RX_DESC_RINGS];
+	int rx_cur[N_RX_COMP_RINGS], rx_new[N_RX_COMP_RINGS];
+	int rx_last[N_RX_DESC_RINGS];
+
+	struct napi_struct napi;
+
+	/* Set when chip is actually in operational state
+	 * (ie. not power managed) */
+	int hw_running;
+	int opened;
+	struct mutex pm_mutex; /* open/close/suspend/resume */
+
+	struct cas_init_block *init_block;
+	struct cas_tx_desc *init_txds[MAX_TX_RINGS];
+	struct cas_rx_desc *init_rxds[MAX_RX_DESC_RINGS];
+	struct cas_rx_comp *init_rxcs[MAX_RX_COMP_RINGS];
+
+	/* we use sk_buffs for tx and pages for rx. the rx skbuffs
+	 * are there for flow re-assembly. */
+	struct sk_buff      *tx_skbs[N_TX_RINGS][TX_DESC_RING_SIZE];
+	struct sk_buff_head  rx_flows[N_RX_FLOWS];
+	cas_page_t          *rx_pages[N_RX_DESC_RINGS][RX_DESC_RING_SIZE];
+	struct list_head     rx_spare_list, rx_inuse_list;
+	int                  rx_spares_needed;
+
+	/* for small packets when copying would be quicker than
+	   mapping */
+	struct cas_tiny_count tx_tiny_use[N_TX_RINGS][TX_DESC_RING_SIZE];
+	u8 *tx_tiny_bufs[N_TX_RINGS];
+
+	u32			msg_enable;
+
+	/* N_TX_RINGS must be >= N_RX_DESC_RINGS */
+	struct net_device_stats net_stats[N_TX_RINGS + 1];
+
+	u32			pci_cfg[64 >> 2];
+	u8                      pci_revision;
+
+	int                     phy_type;
+	int			phy_addr;
+	u32                     phy_id;
+#define CAS_FLAG_1000MB_CAP     0x00000001
+#define CAS_FLAG_REG_PLUS       0x00000002
+#define CAS_FLAG_TARGET_ABORT   0x00000004
+#define CAS_FLAG_SATURN         0x00000008
+#define CAS_FLAG_RXD_POST_MASK  0x000000F0
+#define CAS_FLAG_RXD_POST_SHIFT 4
+#define CAS_FLAG_RXD_POST(x)    ((1 << (CAS_FLAG_RXD_POST_SHIFT + (x))) & \
+                                 CAS_FLAG_RXD_POST_MASK)
+#define CAS_FLAG_ENTROPY_DEV    0x00000100
+#define CAS_FLAG_NO_HW_CSUM     0x00000200
+	u32                     cas_flags;
+	int                     packet_min; /* minimum packet size */
+	int			tx_fifo_size;
+	int			rx_fifo_size;
+	int			rx_pause_off;
+	int			rx_pause_on;
+	int                     crc_size;      /* 4 if half-duplex */
+
+	int                     pci_irq_INTC;
+	int                     min_frame_size; /* for tx fifo workaround */
+
+	/* page size allocation */
+	int                     page_size;
+	int                     page_order;
+	int                     mtu_stride;
+
+	u32			mac_rx_cfg;
+
+	/* Autoneg & PHY control */
+	int			link_cntl;
+	int			link_fcntl;
+	enum link_state		lstate;
+	struct timer_list	link_timer;
+	int			timer_ticks;
+	struct work_struct	reset_task;
+#if 0
+	atomic_t		reset_task_pending;
+#else
+	atomic_t		reset_task_pending;
+	atomic_t		reset_task_pending_mtu;
+	atomic_t		reset_task_pending_spare;
+	atomic_t		reset_task_pending_all;
+#endif
+
+	/* Link-down problem workaround */
+#define LINK_TRANSITION_UNKNOWN 	0
+#define LINK_TRANSITION_ON_FAILURE 	1
+#define LINK_TRANSITION_STILL_FAILED 	2
+#define LINK_TRANSITION_LINK_UP 	3
+#define LINK_TRANSITION_LINK_CONFIG	4
+#define LINK_TRANSITION_LINK_DOWN	5
+#define LINK_TRANSITION_REQUESTED_RESET	6
+	int			link_transition;
+	int 			link_transition_jiffies_valid;
+	unsigned long		link_transition_jiffies;
+
+	/* Tuning */
+	u8 orig_cacheline_size;	/* value when loaded */
+#define CAS_PREF_CACHELINE_SIZE	 0x20	/* Minimum desired */
+
+	/* Diagnostic counters and state. */
+	int 			casreg_len; /* reg-space size for dumping */
+	u64			pause_entered;
+	u16			pause_last_time_recvd;
+
+	dma_addr_t block_dvma, tx_tiny_dvma[N_TX_RINGS];
+	struct pci_dev *pdev;
+	struct net_device *dev;
+#if defined(CONFIG_OF)
+	struct device_node	*of_node;
+#endif
+
+	/* Firmware Info */
+	u16			fw_load_addr;
+	u32			fw_size;
+	u8			*fw_data;
+};
+
+#define TX_DESC_NEXT(r, x)  (((x) + 1) & (TX_DESC_RINGN_SIZE(r) - 1))
+#define RX_DESC_ENTRY(r, x) ((x) & (RX_DESC_RINGN_SIZE(r) - 1))
+#define RX_COMP_ENTRY(r, x) ((x) & (RX_COMP_RINGN_SIZE(r) - 1))
+
+#define TX_BUFF_COUNT(r, x, y)    ((x) <= (y) ? ((y) - (x)) : \
+        (TX_DESC_RINGN_SIZE(r) - (x) + (y)))
+
+#define TX_BUFFS_AVAIL(cp, i)	((cp)->tx_old[(i)] <= (cp)->tx_new[(i)] ? \
+        (cp)->tx_old[(i)] + (TX_DESC_RINGN_SIZE(i) - 1) - (cp)->tx_new[(i)] : \
+        (cp)->tx_old[(i)] - (cp)->tx_new[(i)] - 1)
+
+#define CAS_ALIGN(addr, align) \
+     (((unsigned long) (addr) + ((align) - 1UL)) & ~((align) - 1))
+
+#define RX_FIFO_SIZE                  16384
+#define EXPANSION_ROM_SIZE            65536
+
+#define CAS_MC_EXACT_MATCH_SIZE       15
+#define CAS_MC_HASH_SIZE              256
+#define CAS_MC_HASH_MAX              (CAS_MC_EXACT_MATCH_SIZE + \
+                                      CAS_MC_HASH_SIZE)
+
+#define TX_TARGET_ABORT_LEN           0x20
+#define RX_SWIVEL_OFF_VAL             0x2
+#define RX_AE_FREEN_VAL(x)            (RX_DESC_RINGN_SIZE(x) >> 1)
+#define RX_AE_COMP_VAL                (RX_COMP_RING_SIZE >> 1)
+#define RX_BLANK_INTR_PKT_VAL         0x05
+#define RX_BLANK_INTR_TIME_VAL        0x0F
+#define HP_TCP_THRESH_VAL             1530 /* reduce to enable reassembly */
+
+#define RX_SPARE_COUNT                (RX_DESC_RING_SIZE >> 1)
+#define RX_SPARE_RECOVER_VAL          (RX_SPARE_COUNT >> 2)
+
+#endif /* _CASSINI_H */
diff --git a/drivers/net/ethernet/sun/ldmvsw.c b/drivers/net/ethernet/sun/ldmvsw.c
new file mode 100644
index 000000000..644e42c18
--- /dev/null
+++ b/drivers/net/ethernet/sun/ldmvsw.c
@@ -0,0 +1,483 @@
+// SPDX-License-Identifier: GPL-2.0
+/* ldmvsw.c: Sun4v LDOM Virtual Switch Driver.
+ *
+ * Copyright (C) 2016-2017 Oracle. All rights reserved.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/delay.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/highmem.h>
+#include <linux/if_vlan.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/netdevice.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#if defined(CONFIG_IPV6)
+#include <linux/icmpv6.h>
+#endif
+
+#include <net/ip.h>
+#include <net/icmp.h>
+#include <net/route.h>
+
+#include <asm/vio.h>
+#include <asm/ldc.h>
+
+/* This driver makes use of the common code in sunvnet_common.c */
+#include "sunvnet_common.h"
+
+/* Length of time before we decide the hardware is hung,
+ * and dev->tx_timeout() should be called to fix the problem.
+ */
+#define VSW_TX_TIMEOUT			(10 * HZ)
+
+/* Static HW Addr used for the network interfaces representing vsw ports */
+static u8 vsw_port_hwaddr[ETH_ALEN] = {0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+
+#define DRV_MODULE_NAME		"ldmvsw"
+#define DRV_MODULE_VERSION	"1.2"
+#define DRV_MODULE_RELDATE	"March 4, 2017"
+
+static char version[] =
+	DRV_MODULE_NAME " " DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")";
+MODULE_AUTHOR("Oracle");
+MODULE_DESCRIPTION("Sun4v LDOM Virtual Switch Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+/* Ordered from largest major to lowest */
+static struct vio_version vsw_versions[] = {
+	{ .major = 1, .minor = 8 },
+	{ .major = 1, .minor = 7 },
+	{ .major = 1, .minor = 6 },
+	{ .major = 1, .minor = 0 },
+};
+
+static void vsw_get_drvinfo(struct net_device *dev,
+			    struct ethtool_drvinfo *info)
+{
+	strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
+	strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
+}
+
+static u32 vsw_get_msglevel(struct net_device *dev)
+{
+	struct vnet_port *port = netdev_priv(dev);
+
+	return port->vp->msg_enable;
+}
+
+static void vsw_set_msglevel(struct net_device *dev, u32 value)
+{
+	struct vnet_port *port = netdev_priv(dev);
+
+	port->vp->msg_enable = value;
+}
+
+static const struct ethtool_ops vsw_ethtool_ops = {
+	.get_drvinfo		= vsw_get_drvinfo,
+	.get_msglevel		= vsw_get_msglevel,
+	.set_msglevel		= vsw_set_msglevel,
+	.get_link		= ethtool_op_get_link,
+};
+
+static LIST_HEAD(vnet_list);
+static DEFINE_MUTEX(vnet_list_mutex);
+
+/* func arg to vnet_start_xmit_common() to get the proper tx port */
+static struct vnet_port *vsw_tx_port_find(struct sk_buff *skb,
+					  struct net_device *dev)
+{
+	struct vnet_port *port = netdev_priv(dev);
+
+	return port;
+}
+
+static u16 vsw_select_queue(struct net_device *dev, struct sk_buff *skb,
+			    struct net_device *sb_dev,
+			    select_queue_fallback_t fallback)
+{
+	struct vnet_port *port = netdev_priv(dev);
+
+	if (!port)
+		return 0;
+
+	return port->q_index;
+}
+
+/* Wrappers to common functions */
+static netdev_tx_t vsw_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	return sunvnet_start_xmit_common(skb, dev, vsw_tx_port_find);
+}
+
+static void vsw_set_rx_mode(struct net_device *dev)
+{
+	struct vnet_port *port = netdev_priv(dev);
+
+	return sunvnet_set_rx_mode_common(dev, port->vp);
+}
+
+int ldmvsw_open(struct net_device *dev)
+{
+	struct vnet_port *port = netdev_priv(dev);
+	struct vio_driver_state *vio = &port->vio;
+
+	/* reset the channel */
+	vio_link_state_change(vio, LDC_EVENT_RESET);
+	vnet_port_reset(port);
+	vio_port_up(vio);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ldmvsw_open);
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void vsw_poll_controller(struct net_device *dev)
+{
+	struct vnet_port *port = netdev_priv(dev);
+
+	return sunvnet_poll_controller_common(dev, port->vp);
+}
+#endif
+
+static const struct net_device_ops vsw_ops = {
+	.ndo_open		= ldmvsw_open,
+	.ndo_stop		= sunvnet_close_common,
+	.ndo_set_rx_mode	= vsw_set_rx_mode,
+	.ndo_set_mac_address	= sunvnet_set_mac_addr_common,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_tx_timeout		= sunvnet_tx_timeout_common,
+	.ndo_start_xmit		= vsw_start_xmit,
+	.ndo_select_queue	= vsw_select_queue,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller    = vsw_poll_controller,
+#endif
+};
+
+static const char *local_mac_prop = "local-mac-address";
+static const char *cfg_handle_prop = "cfg-handle";
+
+static struct vnet *vsw_get_vnet(struct mdesc_handle *hp,
+				 u64 port_node,
+				 u64 *handle)
+{
+	struct vnet *vp;
+	struct vnet *iter;
+	const u64 *local_mac = NULL;
+	const u64 *cfghandle = NULL;
+	u64 a;
+
+	/* Get the parent virtual-network-switch macaddr and cfghandle */
+	mdesc_for_each_arc(a, hp, port_node, MDESC_ARC_TYPE_BACK) {
+		u64 target = mdesc_arc_target(hp, a);
+		const char *name;
+
+		name = mdesc_get_property(hp, target, "name", NULL);
+		if (!name || strcmp(name, "virtual-network-switch"))
+			continue;
+
+		local_mac = mdesc_get_property(hp, target,
+					       local_mac_prop, NULL);
+		cfghandle = mdesc_get_property(hp, target,
+					       cfg_handle_prop, NULL);
+		break;
+	}
+	if (!local_mac || !cfghandle)
+		return ERR_PTR(-ENODEV);
+
+	/* find or create associated vnet */
+	vp = NULL;
+	mutex_lock(&vnet_list_mutex);
+	list_for_each_entry(iter, &vnet_list, list) {
+		if (iter->local_mac == *local_mac) {
+			vp = iter;
+			break;
+		}
+	}
+
+	if (!vp) {
+		vp = kzalloc(sizeof(*vp), GFP_KERNEL);
+		if (unlikely(!vp)) {
+			mutex_unlock(&vnet_list_mutex);
+			return ERR_PTR(-ENOMEM);
+		}
+
+		spin_lock_init(&vp->lock);
+		INIT_LIST_HEAD(&vp->port_list);
+		INIT_LIST_HEAD(&vp->list);
+		vp->local_mac = *local_mac;
+		list_add(&vp->list, &vnet_list);
+	}
+
+	mutex_unlock(&vnet_list_mutex);
+
+	*handle = (u64)*cfghandle;
+
+	return vp;
+}
+
+static struct net_device *vsw_alloc_netdev(u8 hwaddr[],
+					   struct vio_dev *vdev,
+					   u64 handle,
+					   u64 port_id)
+{
+	struct net_device *dev;
+	struct vnet_port *port;
+	int i;
+
+	dev = alloc_etherdev_mqs(sizeof(*port), VNET_MAX_TXQS, 1);
+	if (!dev)
+		return ERR_PTR(-ENOMEM);
+	dev->needed_headroom = VNET_PACKET_SKIP + 8;
+	dev->needed_tailroom = 8;
+
+	for (i = 0; i < ETH_ALEN; i++) {
+		dev->dev_addr[i] = hwaddr[i];
+		dev->perm_addr[i] = dev->dev_addr[i];
+	}
+
+	sprintf(dev->name, "vif%d.%d", (int)handle, (int)port_id);
+
+	dev->netdev_ops = &vsw_ops;
+	dev->ethtool_ops = &vsw_ethtool_ops;
+	dev->watchdog_timeo = VSW_TX_TIMEOUT;
+
+	dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG;
+	dev->features = dev->hw_features;
+
+	/* MTU range: 68 - 65535 */
+	dev->min_mtu = ETH_MIN_MTU;
+	dev->max_mtu = VNET_MAX_MTU;
+
+	SET_NETDEV_DEV(dev, &vdev->dev);
+
+	return dev;
+}
+
+static struct ldc_channel_config vsw_ldc_cfg = {
+	.event		= sunvnet_event_common,
+	.mtu		= 64,
+	.mode		= LDC_MODE_UNRELIABLE,
+};
+
+static struct vio_driver_ops vsw_vio_ops = {
+	.send_attr		= sunvnet_send_attr_common,
+	.handle_attr		= sunvnet_handle_attr_common,
+	.handshake_complete	= sunvnet_handshake_complete_common,
+};
+
+static const char *remote_macaddr_prop = "remote-mac-address";
+static const char *id_prop = "id";
+
+static int vsw_port_probe(struct vio_dev *vdev, const struct vio_device_id *id)
+{
+	struct mdesc_handle *hp;
+	struct vnet_port *port;
+	unsigned long flags;
+	struct vnet *vp;
+	struct net_device *dev;
+	const u64 *rmac;
+	int len, i, err;
+	const u64 *port_id;
+	u64 handle;
+
+	hp = mdesc_grab();
+
+	rmac = mdesc_get_property(hp, vdev->mp, remote_macaddr_prop, &len);
+	err = -ENODEV;
+	if (!rmac) {
+		pr_err("Port lacks %s property\n", remote_macaddr_prop);
+		mdesc_release(hp);
+		return err;
+	}
+
+	port_id = mdesc_get_property(hp, vdev->mp, id_prop, NULL);
+	err = -ENODEV;
+	if (!port_id) {
+		pr_err("Port lacks %s property\n", id_prop);
+		mdesc_release(hp);
+		return err;
+	}
+
+	/* Get (or create) the vnet associated with this port */
+	vp = vsw_get_vnet(hp, vdev->mp, &handle);
+	if (IS_ERR(vp)) {
+		err = PTR_ERR(vp);
+		pr_err("Failed to get vnet for vsw-port\n");
+		mdesc_release(hp);
+		return err;
+	}
+
+	mdesc_release(hp);
+
+	dev = vsw_alloc_netdev(vsw_port_hwaddr, vdev, handle, *port_id);
+	if (IS_ERR(dev)) {
+		err = PTR_ERR(dev);
+		pr_err("Failed to alloc netdev for vsw-port\n");
+		return err;
+	}
+
+	port = netdev_priv(dev);
+
+	INIT_LIST_HEAD(&port->list);
+
+	for (i = 0; i < ETH_ALEN; i++)
+		port->raddr[i] = (*rmac >> (5 - i) * 8) & 0xff;
+
+	port->vp = vp;
+	port->dev = dev;
+	port->switch_port = 1;
+	port->tso = false; /* no tso in vsw, misbehaves in bridge */
+	port->tsolen = 0;
+
+	/* Mark the port as belonging to ldmvsw which directs the
+	 * the common code to use the net_device in the vnet_port
+	 * rather than the net_device in the vnet (which is used
+	 * by sunvnet). This bit is used by the VNET_PORT_TO_NET_DEVICE
+	 * macro.
+	 */
+	port->vsw = 1;
+
+	err = vio_driver_init(&port->vio, vdev, VDEV_NETWORK,
+			      vsw_versions, ARRAY_SIZE(vsw_versions),
+			      &vsw_vio_ops, dev->name);
+	if (err)
+		goto err_out_free_dev;
+
+	err = vio_ldc_alloc(&port->vio, &vsw_ldc_cfg, port);
+	if (err)
+		goto err_out_free_dev;
+
+	dev_set_drvdata(&vdev->dev, port);
+
+	netif_napi_add(dev, &port->napi, sunvnet_poll_common,
+		       NAPI_POLL_WEIGHT);
+
+	spin_lock_irqsave(&vp->lock, flags);
+	list_add_rcu(&port->list, &vp->port_list);
+	spin_unlock_irqrestore(&vp->lock, flags);
+
+	timer_setup(&port->clean_timer, sunvnet_clean_timer_expire_common, 0);
+
+	err = register_netdev(dev);
+	if (err) {
+		pr_err("Cannot register net device, aborting\n");
+		goto err_out_del_timer;
+	}
+
+	spin_lock_irqsave(&vp->lock, flags);
+	sunvnet_port_add_txq_common(port);
+	spin_unlock_irqrestore(&vp->lock, flags);
+
+	napi_enable(&port->napi);
+	vio_port_up(&port->vio);
+
+	/* assure no carrier until we receive an LDC_EVENT_UP,
+	 * even if the vsw config script tries to force us up
+	 */
+	netif_carrier_off(dev);
+
+	netdev_info(dev, "LDOM vsw-port %pM\n", dev->dev_addr);
+
+	pr_info("%s: PORT ( remote-mac %pM%s )\n", dev->name,
+		port->raddr, " switch-port");
+
+	return 0;
+
+err_out_del_timer:
+	del_timer_sync(&port->clean_timer);
+	list_del_rcu(&port->list);
+	synchronize_rcu();
+	netif_napi_del(&port->napi);
+	dev_set_drvdata(&vdev->dev, NULL);
+	vio_ldc_free(&port->vio);
+
+err_out_free_dev:
+	free_netdev(dev);
+	return err;
+}
+
+static int vsw_port_remove(struct vio_dev *vdev)
+{
+	struct vnet_port *port = dev_get_drvdata(&vdev->dev);
+	unsigned long flags;
+
+	if (port) {
+		del_timer_sync(&port->vio.timer);
+		del_timer_sync(&port->clean_timer);
+
+		napi_disable(&port->napi);
+		unregister_netdev(port->dev);
+
+		list_del_rcu(&port->list);
+
+		synchronize_rcu();
+		spin_lock_irqsave(&port->vp->lock, flags);
+		sunvnet_port_rm_txq_common(port);
+		spin_unlock_irqrestore(&port->vp->lock, flags);
+		netif_napi_del(&port->napi);
+		sunvnet_port_free_tx_bufs_common(port);
+		vio_ldc_free(&port->vio);
+
+		dev_set_drvdata(&vdev->dev, NULL);
+
+		free_netdev(port->dev);
+	}
+
+	return 0;
+}
+
+static void vsw_cleanup(void)
+{
+	struct vnet *vp;
+
+	/* just need to free up the vnet list */
+	mutex_lock(&vnet_list_mutex);
+	while (!list_empty(&vnet_list)) {
+		vp = list_first_entry(&vnet_list, struct vnet, list);
+		list_del(&vp->list);
+		/* vio_unregister_driver() should have cleaned up port_list */
+		if (!list_empty(&vp->port_list))
+			pr_err("Ports not removed by VIO subsystem!\n");
+		kfree(vp);
+	}
+	mutex_unlock(&vnet_list_mutex);
+}
+
+static const struct vio_device_id vsw_port_match[] = {
+	{
+		.type = "vsw-port",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(vio, vsw_port_match);
+
+static struct vio_driver vsw_port_driver = {
+	.id_table	= vsw_port_match,
+	.probe		= vsw_port_probe,
+	.remove		= vsw_port_remove,
+	.name		= "vsw_port",
+};
+
+static int __init vsw_init(void)
+{
+	pr_info("%s\n", version);
+	return vio_register_driver(&vsw_port_driver);
+}
+
+static void __exit vsw_exit(void)
+{
+	vio_unregister_driver(&vsw_port_driver);
+	vsw_cleanup();
+}
+
+module_init(vsw_init);
+module_exit(vsw_exit);
diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
new file mode 100644
index 000000000..605c4d15b
--- /dev/null
+++ b/drivers/net/ethernet/sun/niu.c
@@ -0,0 +1,10211 @@
+// SPDX-License-Identifier: GPL-2.0
+/* niu.c: Neptune ethernet driver.
+ *
+ * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/etherdevice.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include <linux/mii.h>
+#include <linux/if.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/ipv6.h>
+#include <linux/log2.h>
+#include <linux/jiffies.h>
+#include <linux/crc32.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+
+#include <linux/io.h>
+#include <linux/of_device.h>
+
+#include "niu.h"
+
+#define DRV_MODULE_NAME		"niu"
+#define DRV_MODULE_VERSION	"1.1"
+#define DRV_MODULE_RELDATE	"Apr 22, 2010"
+
+static char version[] =
+	DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
+
+MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
+MODULE_DESCRIPTION("NIU ethernet driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+#ifndef readq
+static u64 readq(void __iomem *reg)
+{
+	return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
+}
+
+static void writeq(u64 val, void __iomem *reg)
+{
+	writel(val & 0xffffffff, reg);
+	writel(val >> 32, reg + 0x4UL);
+}
+#endif
+
+static const struct pci_device_id niu_pci_tbl[] = {
+	{PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
+	{}
+};
+
+MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
+
+#define NIU_TX_TIMEOUT			(5 * HZ)
+
+#define nr64(reg)		readq(np->regs + (reg))
+#define nw64(reg, val)		writeq((val), np->regs + (reg))
+
+#define nr64_mac(reg)		readq(np->mac_regs + (reg))
+#define nw64_mac(reg, val)	writeq((val), np->mac_regs + (reg))
+
+#define nr64_ipp(reg)		readq(np->regs + np->ipp_off + (reg))
+#define nw64_ipp(reg, val)	writeq((val), np->regs + np->ipp_off + (reg))
+
+#define nr64_pcs(reg)		readq(np->regs + np->pcs_off + (reg))
+#define nw64_pcs(reg, val)	writeq((val), np->regs + np->pcs_off + (reg))
+
+#define nr64_xpcs(reg)		readq(np->regs + np->xpcs_off + (reg))
+#define nw64_xpcs(reg, val)	writeq((val), np->regs + np->xpcs_off + (reg))
+
+#define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
+
+static int niu_debug;
+static int debug = -1;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "NIU debug level");
+
+#define niu_lock_parent(np, flags) \
+	spin_lock_irqsave(&np->parent->lock, flags)
+#define niu_unlock_parent(np, flags) \
+	spin_unlock_irqrestore(&np->parent->lock, flags)
+
+static int serdes_init_10g_serdes(struct niu *np);
+
+static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
+				     u64 bits, int limit, int delay)
+{
+	while (--limit >= 0) {
+		u64 val = nr64_mac(reg);
+
+		if (!(val & bits))
+			break;
+		udelay(delay);
+	}
+	if (limit < 0)
+		return -ENODEV;
+	return 0;
+}
+
+static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
+					u64 bits, int limit, int delay,
+					const char *reg_name)
+{
+	int err;
+
+	nw64_mac(reg, bits);
+	err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
+	if (err)
+		netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
+			   (unsigned long long)bits, reg_name,
+			   (unsigned long long)nr64_mac(reg));
+	return err;
+}
+
+#define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
+({	BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
+	__niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
+})
+
+static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
+				     u64 bits, int limit, int delay)
+{
+	while (--limit >= 0) {
+		u64 val = nr64_ipp(reg);
+
+		if (!(val & bits))
+			break;
+		udelay(delay);
+	}
+	if (limit < 0)
+		return -ENODEV;
+	return 0;
+}
+
+static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
+					u64 bits, int limit, int delay,
+					const char *reg_name)
+{
+	int err;
+	u64 val;
+
+	val = nr64_ipp(reg);
+	val |= bits;
+	nw64_ipp(reg, val);
+
+	err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
+	if (err)
+		netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
+			   (unsigned long long)bits, reg_name,
+			   (unsigned long long)nr64_ipp(reg));
+	return err;
+}
+
+#define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
+({	BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
+	__niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
+})
+
+static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
+				 u64 bits, int limit, int delay)
+{
+	while (--limit >= 0) {
+		u64 val = nr64(reg);
+
+		if (!(val & bits))
+			break;
+		udelay(delay);
+	}
+	if (limit < 0)
+		return -ENODEV;
+	return 0;
+}
+
+#define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
+({	BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
+	__niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
+})
+
+static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
+				    u64 bits, int limit, int delay,
+				    const char *reg_name)
+{
+	int err;
+
+	nw64(reg, bits);
+	err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
+	if (err)
+		netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
+			   (unsigned long long)bits, reg_name,
+			   (unsigned long long)nr64(reg));
+	return err;
+}
+
+#define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
+({	BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
+	__niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
+})
+
+static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
+{
+	u64 val = (u64) lp->timer;
+
+	if (on)
+		val |= LDG_IMGMT_ARM;
+
+	nw64(LDG_IMGMT(lp->ldg_num), val);
+}
+
+static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
+{
+	unsigned long mask_reg, bits;
+	u64 val;
+
+	if (ldn < 0 || ldn > LDN_MAX)
+		return -EINVAL;
+
+	if (ldn < 64) {
+		mask_reg = LD_IM0(ldn);
+		bits = LD_IM0_MASK;
+	} else {
+		mask_reg = LD_IM1(ldn - 64);
+		bits = LD_IM1_MASK;
+	}
+
+	val = nr64(mask_reg);
+	if (on)
+		val &= ~bits;
+	else
+		val |= bits;
+	nw64(mask_reg, val);
+
+	return 0;
+}
+
+static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
+{
+	struct niu_parent *parent = np->parent;
+	int i;
+
+	for (i = 0; i <= LDN_MAX; i++) {
+		int err;
+
+		if (parent->ldg_map[i] != lp->ldg_num)
+			continue;
+
+		err = niu_ldn_irq_enable(np, i, on);
+		if (err)
+			return err;
+	}
+	return 0;
+}
+
+static int niu_enable_interrupts(struct niu *np, int on)
+{
+	int i;
+
+	for (i = 0; i < np->num_ldg; i++) {
+		struct niu_ldg *lp = &np->ldg[i];
+		int err;
+
+		err = niu_enable_ldn_in_ldg(np, lp, on);
+		if (err)
+			return err;
+	}
+	for (i = 0; i < np->num_ldg; i++)
+		niu_ldg_rearm(np, &np->ldg[i], on);
+
+	return 0;
+}
+
+static u32 phy_encode(u32 type, int port)
+{
+	return type << (port * 2);
+}
+
+static u32 phy_decode(u32 val, int port)
+{
+	return (val >> (port * 2)) & PORT_TYPE_MASK;
+}
+
+static int mdio_wait(struct niu *np)
+{
+	int limit = 1000;
+	u64 val;
+
+	while (--limit > 0) {
+		val = nr64(MIF_FRAME_OUTPUT);
+		if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
+			return val & MIF_FRAME_OUTPUT_DATA;
+
+		udelay(10);
+	}
+
+	return -ENODEV;
+}
+
+static int mdio_read(struct niu *np, int port, int dev, int reg)
+{
+	int err;
+
+	nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
+	err = mdio_wait(np);
+	if (err < 0)
+		return err;
+
+	nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
+	return mdio_wait(np);
+}
+
+static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
+{
+	int err;
+
+	nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
+	err = mdio_wait(np);
+	if (err < 0)
+		return err;
+
+	nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
+	err = mdio_wait(np);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static int mii_read(struct niu *np, int port, int reg)
+{
+	nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
+	return mdio_wait(np);
+}
+
+static int mii_write(struct niu *np, int port, int reg, int data)
+{
+	int err;
+
+	nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
+	err = mdio_wait(np);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
+{
+	int err;
+
+	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+			 ESR2_TI_PLL_TX_CFG_L(channel),
+			 val & 0xffff);
+	if (!err)
+		err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+				 ESR2_TI_PLL_TX_CFG_H(channel),
+				 val >> 16);
+	return err;
+}
+
+static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
+{
+	int err;
+
+	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+			 ESR2_TI_PLL_RX_CFG_L(channel),
+			 val & 0xffff);
+	if (!err)
+		err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+				 ESR2_TI_PLL_RX_CFG_H(channel),
+				 val >> 16);
+	return err;
+}
+
+/* Mode is always 10G fiber.  */
+static int serdes_init_niu_10g_fiber(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	u32 tx_cfg, rx_cfg;
+	unsigned long i;
+
+	tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
+	rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
+		  PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
+		  PLL_RX_CFG_EQ_LP_ADAPTIVE);
+
+	if (lp->loopback_mode == LOOPBACK_PHY) {
+		u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
+
+		mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+			   ESR2_TI_PLL_TEST_CFG_L, test_cfg);
+
+		tx_cfg |= PLL_TX_CFG_ENTEST;
+		rx_cfg |= PLL_RX_CFG_ENTEST;
+	}
+
+	/* Initialize all 4 lanes of the SERDES.  */
+	for (i = 0; i < 4; i++) {
+		int err = esr2_set_tx_cfg(np, i, tx_cfg);
+		if (err)
+			return err;
+	}
+
+	for (i = 0; i < 4; i++) {
+		int err = esr2_set_rx_cfg(np, i, rx_cfg);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int serdes_init_niu_1g_serdes(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	u16 pll_cfg, pll_sts;
+	int max_retry = 100;
+	u64 uninitialized_var(sig), mask, val;
+	u32 tx_cfg, rx_cfg;
+	unsigned long i;
+	int err;
+
+	tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
+		  PLL_TX_CFG_RATE_HALF);
+	rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
+		  PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
+		  PLL_RX_CFG_RATE_HALF);
+
+	if (np->port == 0)
+		rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
+
+	if (lp->loopback_mode == LOOPBACK_PHY) {
+		u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
+
+		mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+			   ESR2_TI_PLL_TEST_CFG_L, test_cfg);
+
+		tx_cfg |= PLL_TX_CFG_ENTEST;
+		rx_cfg |= PLL_RX_CFG_ENTEST;
+	}
+
+	/* Initialize PLL for 1G */
+	pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
+
+	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+			 ESR2_TI_PLL_CFG_L, pll_cfg);
+	if (err) {
+		netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
+			   np->port, __func__);
+		return err;
+	}
+
+	pll_sts = PLL_CFG_ENPLL;
+
+	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+			 ESR2_TI_PLL_STS_L, pll_sts);
+	if (err) {
+		netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
+			   np->port, __func__);
+		return err;
+	}
+
+	udelay(200);
+
+	/* Initialize all 4 lanes of the SERDES.  */
+	for (i = 0; i < 4; i++) {
+		err = esr2_set_tx_cfg(np, i, tx_cfg);
+		if (err)
+			return err;
+	}
+
+	for (i = 0; i < 4; i++) {
+		err = esr2_set_rx_cfg(np, i, rx_cfg);
+		if (err)
+			return err;
+	}
+
+	switch (np->port) {
+	case 0:
+		val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
+		mask = val;
+		break;
+
+	case 1:
+		val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
+		mask = val;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	while (max_retry--) {
+		sig = nr64(ESR_INT_SIGNALS);
+		if ((sig & mask) == val)
+			break;
+
+		mdelay(500);
+	}
+
+	if ((sig & mask) != val) {
+		netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
+			   np->port, (int)(sig & mask), (int)val);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int serdes_init_niu_10g_serdes(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
+	int max_retry = 100;
+	u64 uninitialized_var(sig), mask, val;
+	unsigned long i;
+	int err;
+
+	tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
+	rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
+		  PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
+		  PLL_RX_CFG_EQ_LP_ADAPTIVE);
+
+	if (lp->loopback_mode == LOOPBACK_PHY) {
+		u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
+
+		mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+			   ESR2_TI_PLL_TEST_CFG_L, test_cfg);
+
+		tx_cfg |= PLL_TX_CFG_ENTEST;
+		rx_cfg |= PLL_RX_CFG_ENTEST;
+	}
+
+	/* Initialize PLL for 10G */
+	pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
+
+	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+			 ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
+	if (err) {
+		netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
+			   np->port, __func__);
+		return err;
+	}
+
+	pll_sts = PLL_CFG_ENPLL;
+
+	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+			 ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
+	if (err) {
+		netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
+			   np->port, __func__);
+		return err;
+	}
+
+	udelay(200);
+
+	/* Initialize all 4 lanes of the SERDES.  */
+	for (i = 0; i < 4; i++) {
+		err = esr2_set_tx_cfg(np, i, tx_cfg);
+		if (err)
+			return err;
+	}
+
+	for (i = 0; i < 4; i++) {
+		err = esr2_set_rx_cfg(np, i, rx_cfg);
+		if (err)
+			return err;
+	}
+
+	/* check if serdes is ready */
+
+	switch (np->port) {
+	case 0:
+		mask = ESR_INT_SIGNALS_P0_BITS;
+		val = (ESR_INT_SRDY0_P0 |
+		       ESR_INT_DET0_P0 |
+		       ESR_INT_XSRDY_P0 |
+		       ESR_INT_XDP_P0_CH3 |
+		       ESR_INT_XDP_P0_CH2 |
+		       ESR_INT_XDP_P0_CH1 |
+		       ESR_INT_XDP_P0_CH0);
+		break;
+
+	case 1:
+		mask = ESR_INT_SIGNALS_P1_BITS;
+		val = (ESR_INT_SRDY0_P1 |
+		       ESR_INT_DET0_P1 |
+		       ESR_INT_XSRDY_P1 |
+		       ESR_INT_XDP_P1_CH3 |
+		       ESR_INT_XDP_P1_CH2 |
+		       ESR_INT_XDP_P1_CH1 |
+		       ESR_INT_XDP_P1_CH0);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	while (max_retry--) {
+		sig = nr64(ESR_INT_SIGNALS);
+		if ((sig & mask) == val)
+			break;
+
+		mdelay(500);
+	}
+
+	if ((sig & mask) != val) {
+		pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
+			np->port, (int)(sig & mask), (int)val);
+
+		/* 10G failed, try initializing at 1G */
+		err = serdes_init_niu_1g_serdes(np);
+		if (!err) {
+			np->flags &= ~NIU_FLAGS_10G;
+			np->mac_xcvr = MAC_XCVR_PCS;
+		}  else {
+			netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
+				   np->port);
+			return -ENODEV;
+		}
+	}
+	return 0;
+}
+
+static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
+{
+	int err;
+
+	err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
+	if (err >= 0) {
+		*val = (err & 0xffff);
+		err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
+				ESR_RXTX_CTRL_H(chan));
+		if (err >= 0)
+			*val |= ((err & 0xffff) << 16);
+		err = 0;
+	}
+	return err;
+}
+
+static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
+{
+	int err;
+
+	err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
+			ESR_GLUE_CTRL0_L(chan));
+	if (err >= 0) {
+		*val = (err & 0xffff);
+		err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
+				ESR_GLUE_CTRL0_H(chan));
+		if (err >= 0) {
+			*val |= ((err & 0xffff) << 16);
+			err = 0;
+		}
+	}
+	return err;
+}
+
+static int esr_read_reset(struct niu *np, u32 *val)
+{
+	int err;
+
+	err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
+			ESR_RXTX_RESET_CTRL_L);
+	if (err >= 0) {
+		*val = (err & 0xffff);
+		err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
+				ESR_RXTX_RESET_CTRL_H);
+		if (err >= 0) {
+			*val |= ((err & 0xffff) << 16);
+			err = 0;
+		}
+	}
+	return err;
+}
+
+static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
+{
+	int err;
+
+	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+			 ESR_RXTX_CTRL_L(chan), val & 0xffff);
+	if (!err)
+		err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+				 ESR_RXTX_CTRL_H(chan), (val >> 16));
+	return err;
+}
+
+static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
+{
+	int err;
+
+	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+			ESR_GLUE_CTRL0_L(chan), val & 0xffff);
+	if (!err)
+		err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+				 ESR_GLUE_CTRL0_H(chan), (val >> 16));
+	return err;
+}
+
+static int esr_reset(struct niu *np)
+{
+	u32 uninitialized_var(reset);
+	int err;
+
+	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+			 ESR_RXTX_RESET_CTRL_L, 0x0000);
+	if (err)
+		return err;
+	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+			 ESR_RXTX_RESET_CTRL_H, 0xffff);
+	if (err)
+		return err;
+	udelay(200);
+
+	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+			 ESR_RXTX_RESET_CTRL_L, 0xffff);
+	if (err)
+		return err;
+	udelay(200);
+
+	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+			 ESR_RXTX_RESET_CTRL_H, 0x0000);
+	if (err)
+		return err;
+	udelay(200);
+
+	err = esr_read_reset(np, &reset);
+	if (err)
+		return err;
+	if (reset != 0) {
+		netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
+			   np->port, reset);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int serdes_init_10g(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	unsigned long ctrl_reg, test_cfg_reg, i;
+	u64 ctrl_val, test_cfg_val, sig, mask, val;
+	int err;
+
+	switch (np->port) {
+	case 0:
+		ctrl_reg = ENET_SERDES_0_CTRL_CFG;
+		test_cfg_reg = ENET_SERDES_0_TEST_CFG;
+		break;
+	case 1:
+		ctrl_reg = ENET_SERDES_1_CTRL_CFG;
+		test_cfg_reg = ENET_SERDES_1_TEST_CFG;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+	ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
+		    ENET_SERDES_CTRL_SDET_1 |
+		    ENET_SERDES_CTRL_SDET_2 |
+		    ENET_SERDES_CTRL_SDET_3 |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
+	test_cfg_val = 0;
+
+	if (lp->loopback_mode == LOOPBACK_PHY) {
+		test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_0_SHIFT) |
+				 (ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_1_SHIFT) |
+				 (ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_2_SHIFT) |
+				 (ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_3_SHIFT));
+	}
+
+	nw64(ctrl_reg, ctrl_val);
+	nw64(test_cfg_reg, test_cfg_val);
+
+	/* Initialize all 4 lanes of the SERDES.  */
+	for (i = 0; i < 4; i++) {
+		u32 rxtx_ctrl, glue0;
+
+		err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
+		if (err)
+			return err;
+		err = esr_read_glue0(np, i, &glue0);
+		if (err)
+			return err;
+
+		rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
+		rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
+			      (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
+
+		glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
+			   ESR_GLUE_CTRL0_THCNT |
+			   ESR_GLUE_CTRL0_BLTIME);
+		glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
+			  (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
+			  (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
+			  (BLTIME_300_CYCLES <<
+			   ESR_GLUE_CTRL0_BLTIME_SHIFT));
+
+		err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
+		if (err)
+			return err;
+		err = esr_write_glue0(np, i, glue0);
+		if (err)
+			return err;
+	}
+
+	err = esr_reset(np);
+	if (err)
+		return err;
+
+	sig = nr64(ESR_INT_SIGNALS);
+	switch (np->port) {
+	case 0:
+		mask = ESR_INT_SIGNALS_P0_BITS;
+		val = (ESR_INT_SRDY0_P0 |
+		       ESR_INT_DET0_P0 |
+		       ESR_INT_XSRDY_P0 |
+		       ESR_INT_XDP_P0_CH3 |
+		       ESR_INT_XDP_P0_CH2 |
+		       ESR_INT_XDP_P0_CH1 |
+		       ESR_INT_XDP_P0_CH0);
+		break;
+
+	case 1:
+		mask = ESR_INT_SIGNALS_P1_BITS;
+		val = (ESR_INT_SRDY0_P1 |
+		       ESR_INT_DET0_P1 |
+		       ESR_INT_XSRDY_P1 |
+		       ESR_INT_XDP_P1_CH3 |
+		       ESR_INT_XDP_P1_CH2 |
+		       ESR_INT_XDP_P1_CH1 |
+		       ESR_INT_XDP_P1_CH0);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if ((sig & mask) != val) {
+		if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
+			np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
+			return 0;
+		}
+		netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
+			   np->port, (int)(sig & mask), (int)val);
+		return -ENODEV;
+	}
+	if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
+		np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
+	return 0;
+}
+
+static int serdes_init_1g(struct niu *np)
+{
+	u64 val;
+
+	val = nr64(ENET_SERDES_1_PLL_CFG);
+	val &= ~ENET_SERDES_PLL_FBDIV2;
+	switch (np->port) {
+	case 0:
+		val |= ENET_SERDES_PLL_HRATE0;
+		break;
+	case 1:
+		val |= ENET_SERDES_PLL_HRATE1;
+		break;
+	case 2:
+		val |= ENET_SERDES_PLL_HRATE2;
+		break;
+	case 3:
+		val |= ENET_SERDES_PLL_HRATE3;
+		break;
+	default:
+		return -EINVAL;
+	}
+	nw64(ENET_SERDES_1_PLL_CFG, val);
+
+	return 0;
+}
+
+static int serdes_init_1g_serdes(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
+	u64 ctrl_val, test_cfg_val, sig, mask, val;
+	int err;
+	u64 reset_val, val_rd;
+
+	val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
+		ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
+		ENET_SERDES_PLL_FBDIV0;
+	switch (np->port) {
+	case 0:
+		reset_val =  ENET_SERDES_RESET_0;
+		ctrl_reg = ENET_SERDES_0_CTRL_CFG;
+		test_cfg_reg = ENET_SERDES_0_TEST_CFG;
+		pll_cfg = ENET_SERDES_0_PLL_CFG;
+		break;
+	case 1:
+		reset_val =  ENET_SERDES_RESET_1;
+		ctrl_reg = ENET_SERDES_1_CTRL_CFG;
+		test_cfg_reg = ENET_SERDES_1_TEST_CFG;
+		pll_cfg = ENET_SERDES_1_PLL_CFG;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+	ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
+		    ENET_SERDES_CTRL_SDET_1 |
+		    ENET_SERDES_CTRL_SDET_2 |
+		    ENET_SERDES_CTRL_SDET_3 |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
+	test_cfg_val = 0;
+
+	if (lp->loopback_mode == LOOPBACK_PHY) {
+		test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_0_SHIFT) |
+				 (ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_1_SHIFT) |
+				 (ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_2_SHIFT) |
+				 (ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_3_SHIFT));
+	}
+
+	nw64(ENET_SERDES_RESET, reset_val);
+	mdelay(20);
+	val_rd = nr64(ENET_SERDES_RESET);
+	val_rd &= ~reset_val;
+	nw64(pll_cfg, val);
+	nw64(ctrl_reg, ctrl_val);
+	nw64(test_cfg_reg, test_cfg_val);
+	nw64(ENET_SERDES_RESET, val_rd);
+	mdelay(2000);
+
+	/* Initialize all 4 lanes of the SERDES.  */
+	for (i = 0; i < 4; i++) {
+		u32 rxtx_ctrl, glue0;
+
+		err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
+		if (err)
+			return err;
+		err = esr_read_glue0(np, i, &glue0);
+		if (err)
+			return err;
+
+		rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
+		rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
+			      (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
+
+		glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
+			   ESR_GLUE_CTRL0_THCNT |
+			   ESR_GLUE_CTRL0_BLTIME);
+		glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
+			  (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
+			  (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
+			  (BLTIME_300_CYCLES <<
+			   ESR_GLUE_CTRL0_BLTIME_SHIFT));
+
+		err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
+		if (err)
+			return err;
+		err = esr_write_glue0(np, i, glue0);
+		if (err)
+			return err;
+	}
+
+
+	sig = nr64(ESR_INT_SIGNALS);
+	switch (np->port) {
+	case 0:
+		val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
+		mask = val;
+		break;
+
+	case 1:
+		val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
+		mask = val;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if ((sig & mask) != val) {
+		netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
+			   np->port, (int)(sig & mask), (int)val);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int link_status_1g_serdes(struct niu *np, int *link_up_p)
+{
+	struct niu_link_config *lp = &np->link_config;
+	int link_up;
+	u64 val;
+	u16 current_speed;
+	unsigned long flags;
+	u8 current_duplex;
+
+	link_up = 0;
+	current_speed = SPEED_INVALID;
+	current_duplex = DUPLEX_INVALID;
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	val = nr64_pcs(PCS_MII_STAT);
+
+	if (val & PCS_MII_STAT_LINK_STATUS) {
+		link_up = 1;
+		current_speed = SPEED_1000;
+		current_duplex = DUPLEX_FULL;
+	}
+
+	lp->active_speed = current_speed;
+	lp->active_duplex = current_duplex;
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	*link_up_p = link_up;
+	return 0;
+}
+
+static int link_status_10g_serdes(struct niu *np, int *link_up_p)
+{
+	unsigned long flags;
+	struct niu_link_config *lp = &np->link_config;
+	int link_up = 0;
+	int link_ok = 1;
+	u64 val, val2;
+	u16 current_speed;
+	u8 current_duplex;
+
+	if (!(np->flags & NIU_FLAGS_10G))
+		return link_status_1g_serdes(np, link_up_p);
+
+	current_speed = SPEED_INVALID;
+	current_duplex = DUPLEX_INVALID;
+	spin_lock_irqsave(&np->lock, flags);
+
+	val = nr64_xpcs(XPCS_STATUS(0));
+	val2 = nr64_mac(XMAC_INTER2);
+	if (val2 & 0x01000000)
+		link_ok = 0;
+
+	if ((val & 0x1000ULL) && link_ok) {
+		link_up = 1;
+		current_speed = SPEED_10000;
+		current_duplex = DUPLEX_FULL;
+	}
+	lp->active_speed = current_speed;
+	lp->active_duplex = current_duplex;
+	spin_unlock_irqrestore(&np->lock, flags);
+	*link_up_p = link_up;
+	return 0;
+}
+
+static int link_status_mii(struct niu *np, int *link_up_p)
+{
+	struct niu_link_config *lp = &np->link_config;
+	int err;
+	int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
+	int supported, advertising, active_speed, active_duplex;
+
+	err = mii_read(np, np->phy_addr, MII_BMCR);
+	if (unlikely(err < 0))
+		return err;
+	bmcr = err;
+
+	err = mii_read(np, np->phy_addr, MII_BMSR);
+	if (unlikely(err < 0))
+		return err;
+	bmsr = err;
+
+	err = mii_read(np, np->phy_addr, MII_ADVERTISE);
+	if (unlikely(err < 0))
+		return err;
+	advert = err;
+
+	err = mii_read(np, np->phy_addr, MII_LPA);
+	if (unlikely(err < 0))
+		return err;
+	lpa = err;
+
+	if (likely(bmsr & BMSR_ESTATEN)) {
+		err = mii_read(np, np->phy_addr, MII_ESTATUS);
+		if (unlikely(err < 0))
+			return err;
+		estatus = err;
+
+		err = mii_read(np, np->phy_addr, MII_CTRL1000);
+		if (unlikely(err < 0))
+			return err;
+		ctrl1000 = err;
+
+		err = mii_read(np, np->phy_addr, MII_STAT1000);
+		if (unlikely(err < 0))
+			return err;
+		stat1000 = err;
+	} else
+		estatus = ctrl1000 = stat1000 = 0;
+
+	supported = 0;
+	if (bmsr & BMSR_ANEGCAPABLE)
+		supported |= SUPPORTED_Autoneg;
+	if (bmsr & BMSR_10HALF)
+		supported |= SUPPORTED_10baseT_Half;
+	if (bmsr & BMSR_10FULL)
+		supported |= SUPPORTED_10baseT_Full;
+	if (bmsr & BMSR_100HALF)
+		supported |= SUPPORTED_100baseT_Half;
+	if (bmsr & BMSR_100FULL)
+		supported |= SUPPORTED_100baseT_Full;
+	if (estatus & ESTATUS_1000_THALF)
+		supported |= SUPPORTED_1000baseT_Half;
+	if (estatus & ESTATUS_1000_TFULL)
+		supported |= SUPPORTED_1000baseT_Full;
+	lp->supported = supported;
+
+	advertising = mii_adv_to_ethtool_adv_t(advert);
+	advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
+
+	if (bmcr & BMCR_ANENABLE) {
+		int neg, neg1000;
+
+		lp->active_autoneg = 1;
+		advertising |= ADVERTISED_Autoneg;
+
+		neg = advert & lpa;
+		neg1000 = (ctrl1000 << 2) & stat1000;
+
+		if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
+			active_speed = SPEED_1000;
+		else if (neg & LPA_100)
+			active_speed = SPEED_100;
+		else if (neg & (LPA_10HALF | LPA_10FULL))
+			active_speed = SPEED_10;
+		else
+			active_speed = SPEED_INVALID;
+
+		if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
+			active_duplex = DUPLEX_FULL;
+		else if (active_speed != SPEED_INVALID)
+			active_duplex = DUPLEX_HALF;
+		else
+			active_duplex = DUPLEX_INVALID;
+	} else {
+		lp->active_autoneg = 0;
+
+		if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
+			active_speed = SPEED_1000;
+		else if (bmcr & BMCR_SPEED100)
+			active_speed = SPEED_100;
+		else
+			active_speed = SPEED_10;
+
+		if (bmcr & BMCR_FULLDPLX)
+			active_duplex = DUPLEX_FULL;
+		else
+			active_duplex = DUPLEX_HALF;
+	}
+
+	lp->active_advertising = advertising;
+	lp->active_speed = active_speed;
+	lp->active_duplex = active_duplex;
+	*link_up_p = !!(bmsr & BMSR_LSTATUS);
+
+	return 0;
+}
+
+static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
+{
+	struct niu_link_config *lp = &np->link_config;
+	u16 current_speed, bmsr;
+	unsigned long flags;
+	u8 current_duplex;
+	int err, link_up;
+
+	link_up = 0;
+	current_speed = SPEED_INVALID;
+	current_duplex = DUPLEX_INVALID;
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	err = -EINVAL;
+
+	err = mii_read(np, np->phy_addr, MII_BMSR);
+	if (err < 0)
+		goto out;
+
+	bmsr = err;
+	if (bmsr & BMSR_LSTATUS) {
+		link_up = 1;
+		current_speed = SPEED_1000;
+		current_duplex = DUPLEX_FULL;
+	}
+	lp->active_speed = current_speed;
+	lp->active_duplex = current_duplex;
+	err = 0;
+
+out:
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	*link_up_p = link_up;
+	return err;
+}
+
+static int link_status_1g(struct niu *np, int *link_up_p)
+{
+	struct niu_link_config *lp = &np->link_config;
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	err = link_status_mii(np, link_up_p);
+	lp->supported |= SUPPORTED_TP;
+	lp->active_advertising |= ADVERTISED_TP;
+
+	spin_unlock_irqrestore(&np->lock, flags);
+	return err;
+}
+
+static int bcm8704_reset(struct niu *np)
+{
+	int err, limit;
+
+	err = mdio_read(np, np->phy_addr,
+			BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
+	if (err < 0 || err == 0xffff)
+		return err;
+	err |= BMCR_RESET;
+	err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
+			 MII_BMCR, err);
+	if (err)
+		return err;
+
+	limit = 1000;
+	while (--limit >= 0) {
+		err = mdio_read(np, np->phy_addr,
+				BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
+		if (err < 0)
+			return err;
+		if (!(err & BMCR_RESET))
+			break;
+	}
+	if (limit < 0) {
+		netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
+			   np->port, (err & 0xffff));
+		return -ENODEV;
+	}
+	return 0;
+}
+
+/* When written, certain PHY registers need to be read back twice
+ * in order for the bits to settle properly.
+ */
+static int bcm8704_user_dev3_readback(struct niu *np, int reg)
+{
+	int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
+	if (err < 0)
+		return err;
+	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
+	if (err < 0)
+		return err;
+	return 0;
+}
+
+static int bcm8706_init_user_dev3(struct niu *np)
+{
+	int err;
+
+
+	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+			BCM8704_USER_OPT_DIGITAL_CTRL);
+	if (err < 0)
+		return err;
+	err &= ~USER_ODIG_CTRL_GPIOS;
+	err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
+	err |=  USER_ODIG_CTRL_RESV2;
+	err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+			 BCM8704_USER_OPT_DIGITAL_CTRL, err);
+	if (err)
+		return err;
+
+	mdelay(1000);
+
+	return 0;
+}
+
+static int bcm8704_init_user_dev3(struct niu *np)
+{
+	int err;
+
+	err = mdio_write(np, np->phy_addr,
+			 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
+			 (USER_CONTROL_OPTXRST_LVL |
+			  USER_CONTROL_OPBIASFLT_LVL |
+			  USER_CONTROL_OBTMPFLT_LVL |
+			  USER_CONTROL_OPPRFLT_LVL |
+			  USER_CONTROL_OPTXFLT_LVL |
+			  USER_CONTROL_OPRXLOS_LVL |
+			  USER_CONTROL_OPRXFLT_LVL |
+			  USER_CONTROL_OPTXON_LVL |
+			  (0x3f << USER_CONTROL_RES1_SHIFT)));
+	if (err)
+		return err;
+
+	err = mdio_write(np, np->phy_addr,
+			 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
+			 (USER_PMD_TX_CTL_XFP_CLKEN |
+			  (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
+			  (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
+			  USER_PMD_TX_CTL_TSCK_LPWREN));
+	if (err)
+		return err;
+
+	err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
+	if (err)
+		return err;
+	err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
+	if (err)
+		return err;
+
+	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+			BCM8704_USER_OPT_DIGITAL_CTRL);
+	if (err < 0)
+		return err;
+	err &= ~USER_ODIG_CTRL_GPIOS;
+	err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
+	err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+			 BCM8704_USER_OPT_DIGITAL_CTRL, err);
+	if (err)
+		return err;
+
+	mdelay(1000);
+
+	return 0;
+}
+
+static int mrvl88x2011_act_led(struct niu *np, int val)
+{
+	int	err;
+
+	err  = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
+		MRVL88X2011_LED_8_TO_11_CTL);
+	if (err < 0)
+		return err;
+
+	err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
+	err |=  MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
+
+	return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
+			  MRVL88X2011_LED_8_TO_11_CTL, err);
+}
+
+static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
+{
+	int	err;
+
+	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
+			MRVL88X2011_LED_BLINK_CTL);
+	if (err >= 0) {
+		err &= ~MRVL88X2011_LED_BLKRATE_MASK;
+		err |= (rate << 4);
+
+		err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
+				 MRVL88X2011_LED_BLINK_CTL, err);
+	}
+
+	return err;
+}
+
+static int xcvr_init_10g_mrvl88x2011(struct niu *np)
+{
+	int	err;
+
+	/* Set LED functions */
+	err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
+	if (err)
+		return err;
+
+	/* led activity */
+	err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
+	if (err)
+		return err;
+
+	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
+			MRVL88X2011_GENERAL_CTL);
+	if (err < 0)
+		return err;
+
+	err |= MRVL88X2011_ENA_XFPREFCLK;
+
+	err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
+			 MRVL88X2011_GENERAL_CTL, err);
+	if (err < 0)
+		return err;
+
+	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
+			MRVL88X2011_PMA_PMD_CTL_1);
+	if (err < 0)
+		return err;
+
+	if (np->link_config.loopback_mode == LOOPBACK_MAC)
+		err |= MRVL88X2011_LOOPBACK;
+	else
+		err &= ~MRVL88X2011_LOOPBACK;
+
+	err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
+			 MRVL88X2011_PMA_PMD_CTL_1, err);
+	if (err < 0)
+		return err;
+
+	/* Enable PMD  */
+	return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
+			  MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
+}
+
+
+static int xcvr_diag_bcm870x(struct niu *np)
+{
+	u16 analog_stat0, tx_alarm_status;
+	int err = 0;
+
+#if 1
+	err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
+			MII_STAT1000);
+	if (err < 0)
+		return err;
+	pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
+
+	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
+	if (err < 0)
+		return err;
+	pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
+
+	err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
+			MII_NWAYTEST);
+	if (err < 0)
+		return err;
+	pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
+#endif
+
+	/* XXX dig this out it might not be so useful XXX */
+	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+			BCM8704_USER_ANALOG_STATUS0);
+	if (err < 0)
+		return err;
+	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+			BCM8704_USER_ANALOG_STATUS0);
+	if (err < 0)
+		return err;
+	analog_stat0 = err;
+
+	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+			BCM8704_USER_TX_ALARM_STATUS);
+	if (err < 0)
+		return err;
+	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+			BCM8704_USER_TX_ALARM_STATUS);
+	if (err < 0)
+		return err;
+	tx_alarm_status = err;
+
+	if (analog_stat0 != 0x03fc) {
+		if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
+			pr_info("Port %u cable not connected or bad cable\n",
+				np->port);
+		} else if (analog_stat0 == 0x639c) {
+			pr_info("Port %u optical module is bad or missing\n",
+				np->port);
+		}
+	}
+
+	return 0;
+}
+
+static int xcvr_10g_set_lb_bcm870x(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	int err;
+
+	err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
+			MII_BMCR);
+	if (err < 0)
+		return err;
+
+	err &= ~BMCR_LOOPBACK;
+
+	if (lp->loopback_mode == LOOPBACK_MAC)
+		err |= BMCR_LOOPBACK;
+
+	err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
+			 MII_BMCR, err);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int xcvr_init_10g_bcm8706(struct niu *np)
+{
+	int err = 0;
+	u64 val;
+
+	if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
+	    (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
+			return err;
+
+	val = nr64_mac(XMAC_CONFIG);
+	val &= ~XMAC_CONFIG_LED_POLARITY;
+	val |= XMAC_CONFIG_FORCE_LED_ON;
+	nw64_mac(XMAC_CONFIG, val);
+
+	val = nr64(MIF_CONFIG);
+	val |= MIF_CONFIG_INDIRECT_MODE;
+	nw64(MIF_CONFIG, val);
+
+	err = bcm8704_reset(np);
+	if (err)
+		return err;
+
+	err = xcvr_10g_set_lb_bcm870x(np);
+	if (err)
+		return err;
+
+	err = bcm8706_init_user_dev3(np);
+	if (err)
+		return err;
+
+	err = xcvr_diag_bcm870x(np);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int xcvr_init_10g_bcm8704(struct niu *np)
+{
+	int err;
+
+	err = bcm8704_reset(np);
+	if (err)
+		return err;
+
+	err = bcm8704_init_user_dev3(np);
+	if (err)
+		return err;
+
+	err = xcvr_10g_set_lb_bcm870x(np);
+	if (err)
+		return err;
+
+	err =  xcvr_diag_bcm870x(np);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int xcvr_init_10g(struct niu *np)
+{
+	int phy_id, err;
+	u64 val;
+
+	val = nr64_mac(XMAC_CONFIG);
+	val &= ~XMAC_CONFIG_LED_POLARITY;
+	val |= XMAC_CONFIG_FORCE_LED_ON;
+	nw64_mac(XMAC_CONFIG, val);
+
+	/* XXX shared resource, lock parent XXX */
+	val = nr64(MIF_CONFIG);
+	val |= MIF_CONFIG_INDIRECT_MODE;
+	nw64(MIF_CONFIG, val);
+
+	phy_id = phy_decode(np->parent->port_phy, np->port);
+	phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
+
+	/* handle different phy types */
+	switch (phy_id & NIU_PHY_ID_MASK) {
+	case NIU_PHY_ID_MRVL88X2011:
+		err = xcvr_init_10g_mrvl88x2011(np);
+		break;
+
+	default: /* bcom 8704 */
+		err = xcvr_init_10g_bcm8704(np);
+		break;
+	}
+
+	return err;
+}
+
+static int mii_reset(struct niu *np)
+{
+	int limit, err;
+
+	err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
+	if (err)
+		return err;
+
+	limit = 1000;
+	while (--limit >= 0) {
+		udelay(500);
+		err = mii_read(np, np->phy_addr, MII_BMCR);
+		if (err < 0)
+			return err;
+		if (!(err & BMCR_RESET))
+			break;
+	}
+	if (limit < 0) {
+		netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
+			   np->port, err);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int xcvr_init_1g_rgmii(struct niu *np)
+{
+	int err;
+	u64 val;
+	u16 bmcr, bmsr, estat;
+
+	val = nr64(MIF_CONFIG);
+	val &= ~MIF_CONFIG_INDIRECT_MODE;
+	nw64(MIF_CONFIG, val);
+
+	err = mii_reset(np);
+	if (err)
+		return err;
+
+	err = mii_read(np, np->phy_addr, MII_BMSR);
+	if (err < 0)
+		return err;
+	bmsr = err;
+
+	estat = 0;
+	if (bmsr & BMSR_ESTATEN) {
+		err = mii_read(np, np->phy_addr, MII_ESTATUS);
+		if (err < 0)
+			return err;
+		estat = err;
+	}
+
+	bmcr = 0;
+	err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
+	if (err)
+		return err;
+
+	if (bmsr & BMSR_ESTATEN) {
+		u16 ctrl1000 = 0;
+
+		if (estat & ESTATUS_1000_TFULL)
+			ctrl1000 |= ADVERTISE_1000FULL;
+		err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
+		if (err)
+			return err;
+	}
+
+	bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
+
+	err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
+	if (err)
+		return err;
+
+	err = mii_read(np, np->phy_addr, MII_BMCR);
+	if (err < 0)
+		return err;
+	bmcr = mii_read(np, np->phy_addr, MII_BMCR);
+
+	err = mii_read(np, np->phy_addr, MII_BMSR);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static int mii_init_common(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	u16 bmcr, bmsr, adv, estat;
+	int err;
+
+	err = mii_reset(np);
+	if (err)
+		return err;
+
+	err = mii_read(np, np->phy_addr, MII_BMSR);
+	if (err < 0)
+		return err;
+	bmsr = err;
+
+	estat = 0;
+	if (bmsr & BMSR_ESTATEN) {
+		err = mii_read(np, np->phy_addr, MII_ESTATUS);
+		if (err < 0)
+			return err;
+		estat = err;
+	}
+
+	bmcr = 0;
+	err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
+	if (err)
+		return err;
+
+	if (lp->loopback_mode == LOOPBACK_MAC) {
+		bmcr |= BMCR_LOOPBACK;
+		if (lp->active_speed == SPEED_1000)
+			bmcr |= BMCR_SPEED1000;
+		if (lp->active_duplex == DUPLEX_FULL)
+			bmcr |= BMCR_FULLDPLX;
+	}
+
+	if (lp->loopback_mode == LOOPBACK_PHY) {
+		u16 aux;
+
+		aux = (BCM5464R_AUX_CTL_EXT_LB |
+		       BCM5464R_AUX_CTL_WRITE_1);
+		err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
+		if (err)
+			return err;
+	}
+
+	if (lp->autoneg) {
+		u16 ctrl1000;
+
+		adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
+		if ((bmsr & BMSR_10HALF) &&
+			(lp->advertising & ADVERTISED_10baseT_Half))
+			adv |= ADVERTISE_10HALF;
+		if ((bmsr & BMSR_10FULL) &&
+			(lp->advertising & ADVERTISED_10baseT_Full))
+			adv |= ADVERTISE_10FULL;
+		if ((bmsr & BMSR_100HALF) &&
+			(lp->advertising & ADVERTISED_100baseT_Half))
+			adv |= ADVERTISE_100HALF;
+		if ((bmsr & BMSR_100FULL) &&
+			(lp->advertising & ADVERTISED_100baseT_Full))
+			adv |= ADVERTISE_100FULL;
+		err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
+		if (err)
+			return err;
+
+		if (likely(bmsr & BMSR_ESTATEN)) {
+			ctrl1000 = 0;
+			if ((estat & ESTATUS_1000_THALF) &&
+				(lp->advertising & ADVERTISED_1000baseT_Half))
+				ctrl1000 |= ADVERTISE_1000HALF;
+			if ((estat & ESTATUS_1000_TFULL) &&
+				(lp->advertising & ADVERTISED_1000baseT_Full))
+				ctrl1000 |= ADVERTISE_1000FULL;
+			err = mii_write(np, np->phy_addr,
+					MII_CTRL1000, ctrl1000);
+			if (err)
+				return err;
+		}
+
+		bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
+	} else {
+		/* !lp->autoneg */
+		int fulldpx;
+
+		if (lp->duplex == DUPLEX_FULL) {
+			bmcr |= BMCR_FULLDPLX;
+			fulldpx = 1;
+		} else if (lp->duplex == DUPLEX_HALF)
+			fulldpx = 0;
+		else
+			return -EINVAL;
+
+		if (lp->speed == SPEED_1000) {
+			/* if X-full requested while not supported, or
+			   X-half requested while not supported... */
+			if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
+				(!fulldpx && !(estat & ESTATUS_1000_THALF)))
+				return -EINVAL;
+			bmcr |= BMCR_SPEED1000;
+		} else if (lp->speed == SPEED_100) {
+			if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
+				(!fulldpx && !(bmsr & BMSR_100HALF)))
+				return -EINVAL;
+			bmcr |= BMCR_SPEED100;
+		} else if (lp->speed == SPEED_10) {
+			if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
+				(!fulldpx && !(bmsr & BMSR_10HALF)))
+				return -EINVAL;
+		} else
+			return -EINVAL;
+	}
+
+	err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
+	if (err)
+		return err;
+
+#if 0
+	err = mii_read(np, np->phy_addr, MII_BMCR);
+	if (err < 0)
+		return err;
+	bmcr = err;
+
+	err = mii_read(np, np->phy_addr, MII_BMSR);
+	if (err < 0)
+		return err;
+	bmsr = err;
+
+	pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
+		np->port, bmcr, bmsr);
+#endif
+
+	return 0;
+}
+
+static int xcvr_init_1g(struct niu *np)
+{
+	u64 val;
+
+	/* XXX shared resource, lock parent XXX */
+	val = nr64(MIF_CONFIG);
+	val &= ~MIF_CONFIG_INDIRECT_MODE;
+	nw64(MIF_CONFIG, val);
+
+	return mii_init_common(np);
+}
+
+static int niu_xcvr_init(struct niu *np)
+{
+	const struct niu_phy_ops *ops = np->phy_ops;
+	int err;
+
+	err = 0;
+	if (ops->xcvr_init)
+		err = ops->xcvr_init(np);
+
+	return err;
+}
+
+static int niu_serdes_init(struct niu *np)
+{
+	const struct niu_phy_ops *ops = np->phy_ops;
+	int err;
+
+	err = 0;
+	if (ops->serdes_init)
+		err = ops->serdes_init(np);
+
+	return err;
+}
+
+static void niu_init_xif(struct niu *);
+static void niu_handle_led(struct niu *, int status);
+
+static int niu_link_status_common(struct niu *np, int link_up)
+{
+	struct niu_link_config *lp = &np->link_config;
+	struct net_device *dev = np->dev;
+	unsigned long flags;
+
+	if (!netif_carrier_ok(dev) && link_up) {
+		netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
+			   lp->active_speed == SPEED_10000 ? "10Gb/sec" :
+			   lp->active_speed == SPEED_1000 ? "1Gb/sec" :
+			   lp->active_speed == SPEED_100 ? "100Mbit/sec" :
+			   "10Mbit/sec",
+			   lp->active_duplex == DUPLEX_FULL ? "full" : "half");
+
+		spin_lock_irqsave(&np->lock, flags);
+		niu_init_xif(np);
+		niu_handle_led(np, 1);
+		spin_unlock_irqrestore(&np->lock, flags);
+
+		netif_carrier_on(dev);
+	} else if (netif_carrier_ok(dev) && !link_up) {
+		netif_warn(np, link, dev, "Link is down\n");
+		spin_lock_irqsave(&np->lock, flags);
+		niu_handle_led(np, 0);
+		spin_unlock_irqrestore(&np->lock, flags);
+		netif_carrier_off(dev);
+	}
+
+	return 0;
+}
+
+static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
+{
+	int err, link_up, pma_status, pcs_status;
+
+	link_up = 0;
+
+	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
+			MRVL88X2011_10G_PMD_STATUS_2);
+	if (err < 0)
+		goto out;
+
+	/* Check PMA/PMD Register: 1.0001.2 == 1 */
+	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
+			MRVL88X2011_PMA_PMD_STATUS_1);
+	if (err < 0)
+		goto out;
+
+	pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
+
+        /* Check PMC Register : 3.0001.2 == 1: read twice */
+	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
+			MRVL88X2011_PMA_PMD_STATUS_1);
+	if (err < 0)
+		goto out;
+
+	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
+			MRVL88X2011_PMA_PMD_STATUS_1);
+	if (err < 0)
+		goto out;
+
+	pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
+
+        /* Check XGXS Register : 4.0018.[0-3,12] */
+	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
+			MRVL88X2011_10G_XGXS_LANE_STAT);
+	if (err < 0)
+		goto out;
+
+	if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
+		    PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
+		    PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
+		    0x800))
+		link_up = (pma_status && pcs_status) ? 1 : 0;
+
+	np->link_config.active_speed = SPEED_10000;
+	np->link_config.active_duplex = DUPLEX_FULL;
+	err = 0;
+out:
+	mrvl88x2011_act_led(np, (link_up ?
+				 MRVL88X2011_LED_CTL_PCS_ACT :
+				 MRVL88X2011_LED_CTL_OFF));
+
+	*link_up_p = link_up;
+	return err;
+}
+
+static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
+{
+	int err, link_up;
+	link_up = 0;
+
+	err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
+			BCM8704_PMD_RCV_SIGDET);
+	if (err < 0 || err == 0xffff)
+		goto out;
+	if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
+		err = 0;
+		goto out;
+	}
+
+	err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
+			BCM8704_PCS_10G_R_STATUS);
+	if (err < 0)
+		goto out;
+
+	if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
+		err = 0;
+		goto out;
+	}
+
+	err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
+			BCM8704_PHYXS_XGXS_LANE_STAT);
+	if (err < 0)
+		goto out;
+	if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
+		    PHYXS_XGXS_LANE_STAT_MAGIC |
+		    PHYXS_XGXS_LANE_STAT_PATTEST |
+		    PHYXS_XGXS_LANE_STAT_LANE3 |
+		    PHYXS_XGXS_LANE_STAT_LANE2 |
+		    PHYXS_XGXS_LANE_STAT_LANE1 |
+		    PHYXS_XGXS_LANE_STAT_LANE0)) {
+		err = 0;
+		np->link_config.active_speed = SPEED_INVALID;
+		np->link_config.active_duplex = DUPLEX_INVALID;
+		goto out;
+	}
+
+	link_up = 1;
+	np->link_config.active_speed = SPEED_10000;
+	np->link_config.active_duplex = DUPLEX_FULL;
+	err = 0;
+
+out:
+	*link_up_p = link_up;
+	return err;
+}
+
+static int link_status_10g_bcom(struct niu *np, int *link_up_p)
+{
+	int err, link_up;
+
+	link_up = 0;
+
+	err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
+			BCM8704_PMD_RCV_SIGDET);
+	if (err < 0)
+		goto out;
+	if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
+		err = 0;
+		goto out;
+	}
+
+	err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
+			BCM8704_PCS_10G_R_STATUS);
+	if (err < 0)
+		goto out;
+	if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
+		err = 0;
+		goto out;
+	}
+
+	err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
+			BCM8704_PHYXS_XGXS_LANE_STAT);
+	if (err < 0)
+		goto out;
+
+	if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
+		    PHYXS_XGXS_LANE_STAT_MAGIC |
+		    PHYXS_XGXS_LANE_STAT_LANE3 |
+		    PHYXS_XGXS_LANE_STAT_LANE2 |
+		    PHYXS_XGXS_LANE_STAT_LANE1 |
+		    PHYXS_XGXS_LANE_STAT_LANE0)) {
+		err = 0;
+		goto out;
+	}
+
+	link_up = 1;
+	np->link_config.active_speed = SPEED_10000;
+	np->link_config.active_duplex = DUPLEX_FULL;
+	err = 0;
+
+out:
+	*link_up_p = link_up;
+	return err;
+}
+
+static int link_status_10g(struct niu *np, int *link_up_p)
+{
+	unsigned long flags;
+	int err = -EINVAL;
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
+		int phy_id;
+
+		phy_id = phy_decode(np->parent->port_phy, np->port);
+		phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
+
+		/* handle different phy types */
+		switch (phy_id & NIU_PHY_ID_MASK) {
+		case NIU_PHY_ID_MRVL88X2011:
+			err = link_status_10g_mrvl(np, link_up_p);
+			break;
+
+		default: /* bcom 8704 */
+			err = link_status_10g_bcom(np, link_up_p);
+			break;
+		}
+	}
+
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	return err;
+}
+
+static int niu_10g_phy_present(struct niu *np)
+{
+	u64 sig, mask, val;
+
+	sig = nr64(ESR_INT_SIGNALS);
+	switch (np->port) {
+	case 0:
+		mask = ESR_INT_SIGNALS_P0_BITS;
+		val = (ESR_INT_SRDY0_P0 |
+		       ESR_INT_DET0_P0 |
+		       ESR_INT_XSRDY_P0 |
+		       ESR_INT_XDP_P0_CH3 |
+		       ESR_INT_XDP_P0_CH2 |
+		       ESR_INT_XDP_P0_CH1 |
+		       ESR_INT_XDP_P0_CH0);
+		break;
+
+	case 1:
+		mask = ESR_INT_SIGNALS_P1_BITS;
+		val = (ESR_INT_SRDY0_P1 |
+		       ESR_INT_DET0_P1 |
+		       ESR_INT_XSRDY_P1 |
+		       ESR_INT_XDP_P1_CH3 |
+		       ESR_INT_XDP_P1_CH2 |
+		       ESR_INT_XDP_P1_CH1 |
+		       ESR_INT_XDP_P1_CH0);
+		break;
+
+	default:
+		return 0;
+	}
+
+	if ((sig & mask) != val)
+		return 0;
+	return 1;
+}
+
+static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
+{
+	unsigned long flags;
+	int err = 0;
+	int phy_present;
+	int phy_present_prev;
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
+		phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
+			1 : 0;
+		phy_present = niu_10g_phy_present(np);
+		if (phy_present != phy_present_prev) {
+			/* state change */
+			if (phy_present) {
+				/* A NEM was just plugged in */
+				np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
+				if (np->phy_ops->xcvr_init)
+					err = np->phy_ops->xcvr_init(np);
+				if (err) {
+					err = mdio_read(np, np->phy_addr,
+						BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
+					if (err == 0xffff) {
+						/* No mdio, back-to-back XAUI */
+						goto out;
+					}
+					/* debounce */
+					np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
+				}
+			} else {
+				np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
+				*link_up_p = 0;
+				netif_warn(np, link, np->dev,
+					   "Hotplug PHY Removed\n");
+			}
+		}
+out:
+		if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
+			err = link_status_10g_bcm8706(np, link_up_p);
+			if (err == 0xffff) {
+				/* No mdio, back-to-back XAUI: it is C10NEM */
+				*link_up_p = 1;
+				np->link_config.active_speed = SPEED_10000;
+				np->link_config.active_duplex = DUPLEX_FULL;
+			}
+		}
+	}
+
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	return 0;
+}
+
+static int niu_link_status(struct niu *np, int *link_up_p)
+{
+	const struct niu_phy_ops *ops = np->phy_ops;
+	int err;
+
+	err = 0;
+	if (ops->link_status)
+		err = ops->link_status(np, link_up_p);
+
+	return err;
+}
+
+static void niu_timer(struct timer_list *t)
+{
+	struct niu *np = from_timer(np, t, timer);
+	unsigned long off;
+	int err, link_up;
+
+	err = niu_link_status(np, &link_up);
+	if (!err)
+		niu_link_status_common(np, link_up);
+
+	if (netif_carrier_ok(np->dev))
+		off = 5 * HZ;
+	else
+		off = 1 * HZ;
+	np->timer.expires = jiffies + off;
+
+	add_timer(&np->timer);
+}
+
+static const struct niu_phy_ops phy_ops_10g_serdes = {
+	.serdes_init		= serdes_init_10g_serdes,
+	.link_status		= link_status_10g_serdes,
+};
+
+static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
+	.serdes_init		= serdes_init_niu_10g_serdes,
+	.link_status		= link_status_10g_serdes,
+};
+
+static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
+	.serdes_init		= serdes_init_niu_1g_serdes,
+	.link_status		= link_status_1g_serdes,
+};
+
+static const struct niu_phy_ops phy_ops_1g_rgmii = {
+	.xcvr_init		= xcvr_init_1g_rgmii,
+	.link_status		= link_status_1g_rgmii,
+};
+
+static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
+	.serdes_init		= serdes_init_niu_10g_fiber,
+	.xcvr_init		= xcvr_init_10g,
+	.link_status		= link_status_10g,
+};
+
+static const struct niu_phy_ops phy_ops_10g_fiber = {
+	.serdes_init		= serdes_init_10g,
+	.xcvr_init		= xcvr_init_10g,
+	.link_status		= link_status_10g,
+};
+
+static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
+	.serdes_init		= serdes_init_10g,
+	.xcvr_init		= xcvr_init_10g_bcm8706,
+	.link_status		= link_status_10g_hotplug,
+};
+
+static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
+	.serdes_init		= serdes_init_niu_10g_fiber,
+	.xcvr_init		= xcvr_init_10g_bcm8706,
+	.link_status		= link_status_10g_hotplug,
+};
+
+static const struct niu_phy_ops phy_ops_10g_copper = {
+	.serdes_init		= serdes_init_10g,
+	.link_status		= link_status_10g, /* XXX */
+};
+
+static const struct niu_phy_ops phy_ops_1g_fiber = {
+	.serdes_init		= serdes_init_1g,
+	.xcvr_init		= xcvr_init_1g,
+	.link_status		= link_status_1g,
+};
+
+static const struct niu_phy_ops phy_ops_1g_copper = {
+	.xcvr_init		= xcvr_init_1g,
+	.link_status		= link_status_1g,
+};
+
+struct niu_phy_template {
+	const struct niu_phy_ops	*ops;
+	u32				phy_addr_base;
+};
+
+static const struct niu_phy_template phy_template_niu_10g_fiber = {
+	.ops		= &phy_ops_10g_fiber_niu,
+	.phy_addr_base	= 16,
+};
+
+static const struct niu_phy_template phy_template_niu_10g_serdes = {
+	.ops		= &phy_ops_10g_serdes_niu,
+	.phy_addr_base	= 0,
+};
+
+static const struct niu_phy_template phy_template_niu_1g_serdes = {
+	.ops		= &phy_ops_1g_serdes_niu,
+	.phy_addr_base	= 0,
+};
+
+static const struct niu_phy_template phy_template_10g_fiber = {
+	.ops		= &phy_ops_10g_fiber,
+	.phy_addr_base	= 8,
+};
+
+static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
+	.ops		= &phy_ops_10g_fiber_hotplug,
+	.phy_addr_base	= 8,
+};
+
+static const struct niu_phy_template phy_template_niu_10g_hotplug = {
+	.ops		= &phy_ops_niu_10g_hotplug,
+	.phy_addr_base	= 8,
+};
+
+static const struct niu_phy_template phy_template_10g_copper = {
+	.ops		= &phy_ops_10g_copper,
+	.phy_addr_base	= 10,
+};
+
+static const struct niu_phy_template phy_template_1g_fiber = {
+	.ops		= &phy_ops_1g_fiber,
+	.phy_addr_base	= 0,
+};
+
+static const struct niu_phy_template phy_template_1g_copper = {
+	.ops		= &phy_ops_1g_copper,
+	.phy_addr_base	= 0,
+};
+
+static const struct niu_phy_template phy_template_1g_rgmii = {
+	.ops		= &phy_ops_1g_rgmii,
+	.phy_addr_base	= 0,
+};
+
+static const struct niu_phy_template phy_template_10g_serdes = {
+	.ops		= &phy_ops_10g_serdes,
+	.phy_addr_base	= 0,
+};
+
+static int niu_atca_port_num[4] = {
+	0, 0,  11, 10
+};
+
+static int serdes_init_10g_serdes(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
+	u64 ctrl_val, test_cfg_val, sig, mask, val;
+
+	switch (np->port) {
+	case 0:
+		ctrl_reg = ENET_SERDES_0_CTRL_CFG;
+		test_cfg_reg = ENET_SERDES_0_TEST_CFG;
+		pll_cfg = ENET_SERDES_0_PLL_CFG;
+		break;
+	case 1:
+		ctrl_reg = ENET_SERDES_1_CTRL_CFG;
+		test_cfg_reg = ENET_SERDES_1_TEST_CFG;
+		pll_cfg = ENET_SERDES_1_PLL_CFG;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+	ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
+		    ENET_SERDES_CTRL_SDET_1 |
+		    ENET_SERDES_CTRL_SDET_2 |
+		    ENET_SERDES_CTRL_SDET_3 |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
+		    (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
+		    (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
+	test_cfg_val = 0;
+
+	if (lp->loopback_mode == LOOPBACK_PHY) {
+		test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_0_SHIFT) |
+				 (ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_1_SHIFT) |
+				 (ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_2_SHIFT) |
+				 (ENET_TEST_MD_PAD_LOOPBACK <<
+				  ENET_SERDES_TEST_MD_3_SHIFT));
+	}
+
+	esr_reset(np);
+	nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
+	nw64(ctrl_reg, ctrl_val);
+	nw64(test_cfg_reg, test_cfg_val);
+
+	/* Initialize all 4 lanes of the SERDES.  */
+	for (i = 0; i < 4; i++) {
+		u32 rxtx_ctrl, glue0;
+		int err;
+
+		err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
+		if (err)
+			return err;
+		err = esr_read_glue0(np, i, &glue0);
+		if (err)
+			return err;
+
+		rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
+		rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
+			      (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
+
+		glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
+			   ESR_GLUE_CTRL0_THCNT |
+			   ESR_GLUE_CTRL0_BLTIME);
+		glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
+			  (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
+			  (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
+			  (BLTIME_300_CYCLES <<
+			   ESR_GLUE_CTRL0_BLTIME_SHIFT));
+
+		err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
+		if (err)
+			return err;
+		err = esr_write_glue0(np, i, glue0);
+		if (err)
+			return err;
+	}
+
+
+	sig = nr64(ESR_INT_SIGNALS);
+	switch (np->port) {
+	case 0:
+		mask = ESR_INT_SIGNALS_P0_BITS;
+		val = (ESR_INT_SRDY0_P0 |
+		       ESR_INT_DET0_P0 |
+		       ESR_INT_XSRDY_P0 |
+		       ESR_INT_XDP_P0_CH3 |
+		       ESR_INT_XDP_P0_CH2 |
+		       ESR_INT_XDP_P0_CH1 |
+		       ESR_INT_XDP_P0_CH0);
+		break;
+
+	case 1:
+		mask = ESR_INT_SIGNALS_P1_BITS;
+		val = (ESR_INT_SRDY0_P1 |
+		       ESR_INT_DET0_P1 |
+		       ESR_INT_XSRDY_P1 |
+		       ESR_INT_XDP_P1_CH3 |
+		       ESR_INT_XDP_P1_CH2 |
+		       ESR_INT_XDP_P1_CH1 |
+		       ESR_INT_XDP_P1_CH0);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if ((sig & mask) != val) {
+		int err;
+		err = serdes_init_1g_serdes(np);
+		if (!err) {
+			np->flags &= ~NIU_FLAGS_10G;
+			np->mac_xcvr = MAC_XCVR_PCS;
+		}  else {
+			netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
+				   np->port);
+			return -ENODEV;
+		}
+	}
+
+	return 0;
+}
+
+static int niu_determine_phy_disposition(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+	u8 plat_type = parent->plat_type;
+	const struct niu_phy_template *tp;
+	u32 phy_addr_off = 0;
+
+	if (plat_type == PLAT_TYPE_NIU) {
+		switch (np->flags &
+			(NIU_FLAGS_10G |
+			 NIU_FLAGS_FIBER |
+			 NIU_FLAGS_XCVR_SERDES)) {
+		case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
+			/* 10G Serdes */
+			tp = &phy_template_niu_10g_serdes;
+			break;
+		case NIU_FLAGS_XCVR_SERDES:
+			/* 1G Serdes */
+			tp = &phy_template_niu_1g_serdes;
+			break;
+		case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
+			/* 10G Fiber */
+		default:
+			if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
+				tp = &phy_template_niu_10g_hotplug;
+				if (np->port == 0)
+					phy_addr_off = 8;
+				if (np->port == 1)
+					phy_addr_off = 12;
+			} else {
+				tp = &phy_template_niu_10g_fiber;
+				phy_addr_off += np->port;
+			}
+			break;
+		}
+	} else {
+		switch (np->flags &
+			(NIU_FLAGS_10G |
+			 NIU_FLAGS_FIBER |
+			 NIU_FLAGS_XCVR_SERDES)) {
+		case 0:
+			/* 1G copper */
+			tp = &phy_template_1g_copper;
+			if (plat_type == PLAT_TYPE_VF_P0)
+				phy_addr_off = 10;
+			else if (plat_type == PLAT_TYPE_VF_P1)
+				phy_addr_off = 26;
+
+			phy_addr_off += (np->port ^ 0x3);
+			break;
+
+		case NIU_FLAGS_10G:
+			/* 10G copper */
+			tp = &phy_template_10g_copper;
+			break;
+
+		case NIU_FLAGS_FIBER:
+			/* 1G fiber */
+			tp = &phy_template_1g_fiber;
+			break;
+
+		case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
+			/* 10G fiber */
+			tp = &phy_template_10g_fiber;
+			if (plat_type == PLAT_TYPE_VF_P0 ||
+			    plat_type == PLAT_TYPE_VF_P1)
+				phy_addr_off = 8;
+			phy_addr_off += np->port;
+			if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
+				tp = &phy_template_10g_fiber_hotplug;
+				if (np->port == 0)
+					phy_addr_off = 8;
+				if (np->port == 1)
+					phy_addr_off = 12;
+			}
+			break;
+
+		case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
+		case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
+		case NIU_FLAGS_XCVR_SERDES:
+			switch(np->port) {
+			case 0:
+			case 1:
+				tp = &phy_template_10g_serdes;
+				break;
+			case 2:
+			case 3:
+				tp = &phy_template_1g_rgmii;
+				break;
+			default:
+				return -EINVAL;
+			}
+			phy_addr_off = niu_atca_port_num[np->port];
+			break;
+
+		default:
+			return -EINVAL;
+		}
+	}
+
+	np->phy_ops = tp->ops;
+	np->phy_addr = tp->phy_addr_base + phy_addr_off;
+
+	return 0;
+}
+
+static int niu_init_link(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+	int err, ignore;
+
+	if (parent->plat_type == PLAT_TYPE_NIU) {
+		err = niu_xcvr_init(np);
+		if (err)
+			return err;
+		msleep(200);
+	}
+	err = niu_serdes_init(np);
+	if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
+		return err;
+	msleep(200);
+	err = niu_xcvr_init(np);
+	if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
+		niu_link_status(np, &ignore);
+	return 0;
+}
+
+static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
+{
+	u16 reg0 = addr[4] << 8 | addr[5];
+	u16 reg1 = addr[2] << 8 | addr[3];
+	u16 reg2 = addr[0] << 8 | addr[1];
+
+	if (np->flags & NIU_FLAGS_XMAC) {
+		nw64_mac(XMAC_ADDR0, reg0);
+		nw64_mac(XMAC_ADDR1, reg1);
+		nw64_mac(XMAC_ADDR2, reg2);
+	} else {
+		nw64_mac(BMAC_ADDR0, reg0);
+		nw64_mac(BMAC_ADDR1, reg1);
+		nw64_mac(BMAC_ADDR2, reg2);
+	}
+}
+
+static int niu_num_alt_addr(struct niu *np)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		return XMAC_NUM_ALT_ADDR;
+	else
+		return BMAC_NUM_ALT_ADDR;
+}
+
+static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
+{
+	u16 reg0 = addr[4] << 8 | addr[5];
+	u16 reg1 = addr[2] << 8 | addr[3];
+	u16 reg2 = addr[0] << 8 | addr[1];
+
+	if (index >= niu_num_alt_addr(np))
+		return -EINVAL;
+
+	if (np->flags & NIU_FLAGS_XMAC) {
+		nw64_mac(XMAC_ALT_ADDR0(index), reg0);
+		nw64_mac(XMAC_ALT_ADDR1(index), reg1);
+		nw64_mac(XMAC_ALT_ADDR2(index), reg2);
+	} else {
+		nw64_mac(BMAC_ALT_ADDR0(index), reg0);
+		nw64_mac(BMAC_ALT_ADDR1(index), reg1);
+		nw64_mac(BMAC_ALT_ADDR2(index), reg2);
+	}
+
+	return 0;
+}
+
+static int niu_enable_alt_mac(struct niu *np, int index, int on)
+{
+	unsigned long reg;
+	u64 val, mask;
+
+	if (index >= niu_num_alt_addr(np))
+		return -EINVAL;
+
+	if (np->flags & NIU_FLAGS_XMAC) {
+		reg = XMAC_ADDR_CMPEN;
+		mask = 1 << index;
+	} else {
+		reg = BMAC_ADDR_CMPEN;
+		mask = 1 << (index + 1);
+	}
+
+	val = nr64_mac(reg);
+	if (on)
+		val |= mask;
+	else
+		val &= ~mask;
+	nw64_mac(reg, val);
+
+	return 0;
+}
+
+static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
+				   int num, int mac_pref)
+{
+	u64 val = nr64_mac(reg);
+	val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
+	val |= num;
+	if (mac_pref)
+		val |= HOST_INFO_MPR;
+	nw64_mac(reg, val);
+}
+
+static int __set_rdc_table_num(struct niu *np,
+			       int xmac_index, int bmac_index,
+			       int rdc_table_num, int mac_pref)
+{
+	unsigned long reg;
+
+	if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
+		return -EINVAL;
+	if (np->flags & NIU_FLAGS_XMAC)
+		reg = XMAC_HOST_INFO(xmac_index);
+	else
+		reg = BMAC_HOST_INFO(bmac_index);
+	__set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
+	return 0;
+}
+
+static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
+					 int mac_pref)
+{
+	return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
+}
+
+static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
+					   int mac_pref)
+{
+	return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
+}
+
+static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
+				     int table_num, int mac_pref)
+{
+	if (idx >= niu_num_alt_addr(np))
+		return -EINVAL;
+	return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
+}
+
+static u64 vlan_entry_set_parity(u64 reg_val)
+{
+	u64 port01_mask;
+	u64 port23_mask;
+
+	port01_mask = 0x00ff;
+	port23_mask = 0xff00;
+
+	if (hweight64(reg_val & port01_mask) & 1)
+		reg_val |= ENET_VLAN_TBL_PARITY0;
+	else
+		reg_val &= ~ENET_VLAN_TBL_PARITY0;
+
+	if (hweight64(reg_val & port23_mask) & 1)
+		reg_val |= ENET_VLAN_TBL_PARITY1;
+	else
+		reg_val &= ~ENET_VLAN_TBL_PARITY1;
+
+	return reg_val;
+}
+
+static void vlan_tbl_write(struct niu *np, unsigned long index,
+			   int port, int vpr, int rdc_table)
+{
+	u64 reg_val = nr64(ENET_VLAN_TBL(index));
+
+	reg_val &= ~((ENET_VLAN_TBL_VPR |
+		      ENET_VLAN_TBL_VLANRDCTBLN) <<
+		     ENET_VLAN_TBL_SHIFT(port));
+	if (vpr)
+		reg_val |= (ENET_VLAN_TBL_VPR <<
+			    ENET_VLAN_TBL_SHIFT(port));
+	reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
+
+	reg_val = vlan_entry_set_parity(reg_val);
+
+	nw64(ENET_VLAN_TBL(index), reg_val);
+}
+
+static void vlan_tbl_clear(struct niu *np)
+{
+	int i;
+
+	for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
+		nw64(ENET_VLAN_TBL(i), 0);
+}
+
+static int tcam_wait_bit(struct niu *np, u64 bit)
+{
+	int limit = 1000;
+
+	while (--limit > 0) {
+		if (nr64(TCAM_CTL) & bit)
+			break;
+		udelay(1);
+	}
+	if (limit <= 0)
+		return -ENODEV;
+
+	return 0;
+}
+
+static int tcam_flush(struct niu *np, int index)
+{
+	nw64(TCAM_KEY_0, 0x00);
+	nw64(TCAM_KEY_MASK_0, 0xff);
+	nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
+
+	return tcam_wait_bit(np, TCAM_CTL_STAT);
+}
+
+#if 0
+static int tcam_read(struct niu *np, int index,
+		     u64 *key, u64 *mask)
+{
+	int err;
+
+	nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
+	err = tcam_wait_bit(np, TCAM_CTL_STAT);
+	if (!err) {
+		key[0] = nr64(TCAM_KEY_0);
+		key[1] = nr64(TCAM_KEY_1);
+		key[2] = nr64(TCAM_KEY_2);
+		key[3] = nr64(TCAM_KEY_3);
+		mask[0] = nr64(TCAM_KEY_MASK_0);
+		mask[1] = nr64(TCAM_KEY_MASK_1);
+		mask[2] = nr64(TCAM_KEY_MASK_2);
+		mask[3] = nr64(TCAM_KEY_MASK_3);
+	}
+	return err;
+}
+#endif
+
+static int tcam_write(struct niu *np, int index,
+		      u64 *key, u64 *mask)
+{
+	nw64(TCAM_KEY_0, key[0]);
+	nw64(TCAM_KEY_1, key[1]);
+	nw64(TCAM_KEY_2, key[2]);
+	nw64(TCAM_KEY_3, key[3]);
+	nw64(TCAM_KEY_MASK_0, mask[0]);
+	nw64(TCAM_KEY_MASK_1, mask[1]);
+	nw64(TCAM_KEY_MASK_2, mask[2]);
+	nw64(TCAM_KEY_MASK_3, mask[3]);
+	nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
+
+	return tcam_wait_bit(np, TCAM_CTL_STAT);
+}
+
+#if 0
+static int tcam_assoc_read(struct niu *np, int index, u64 *data)
+{
+	int err;
+
+	nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
+	err = tcam_wait_bit(np, TCAM_CTL_STAT);
+	if (!err)
+		*data = nr64(TCAM_KEY_1);
+
+	return err;
+}
+#endif
+
+static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
+{
+	nw64(TCAM_KEY_1, assoc_data);
+	nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
+
+	return tcam_wait_bit(np, TCAM_CTL_STAT);
+}
+
+static void tcam_enable(struct niu *np, int on)
+{
+	u64 val = nr64(FFLP_CFG_1);
+
+	if (on)
+		val &= ~FFLP_CFG_1_TCAM_DIS;
+	else
+		val |= FFLP_CFG_1_TCAM_DIS;
+	nw64(FFLP_CFG_1, val);
+}
+
+static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
+{
+	u64 val = nr64(FFLP_CFG_1);
+
+	val &= ~(FFLP_CFG_1_FFLPINITDONE |
+		 FFLP_CFG_1_CAMLAT |
+		 FFLP_CFG_1_CAMRATIO);
+	val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
+	val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
+	nw64(FFLP_CFG_1, val);
+
+	val = nr64(FFLP_CFG_1);
+	val |= FFLP_CFG_1_FFLPINITDONE;
+	nw64(FFLP_CFG_1, val);
+}
+
+static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
+				      int on)
+{
+	unsigned long reg;
+	u64 val;
+
+	if (class < CLASS_CODE_ETHERTYPE1 ||
+	    class > CLASS_CODE_ETHERTYPE2)
+		return -EINVAL;
+
+	reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
+	val = nr64(reg);
+	if (on)
+		val |= L2_CLS_VLD;
+	else
+		val &= ~L2_CLS_VLD;
+	nw64(reg, val);
+
+	return 0;
+}
+
+#if 0
+static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
+				   u64 ether_type)
+{
+	unsigned long reg;
+	u64 val;
+
+	if (class < CLASS_CODE_ETHERTYPE1 ||
+	    class > CLASS_CODE_ETHERTYPE2 ||
+	    (ether_type & ~(u64)0xffff) != 0)
+		return -EINVAL;
+
+	reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
+	val = nr64(reg);
+	val &= ~L2_CLS_ETYPE;
+	val |= (ether_type << L2_CLS_ETYPE_SHIFT);
+	nw64(reg, val);
+
+	return 0;
+}
+#endif
+
+static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
+				     int on)
+{
+	unsigned long reg;
+	u64 val;
+
+	if (class < CLASS_CODE_USER_PROG1 ||
+	    class > CLASS_CODE_USER_PROG4)
+		return -EINVAL;
+
+	reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
+	val = nr64(reg);
+	if (on)
+		val |= L3_CLS_VALID;
+	else
+		val &= ~L3_CLS_VALID;
+	nw64(reg, val);
+
+	return 0;
+}
+
+static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
+				  int ipv6, u64 protocol_id,
+				  u64 tos_mask, u64 tos_val)
+{
+	unsigned long reg;
+	u64 val;
+
+	if (class < CLASS_CODE_USER_PROG1 ||
+	    class > CLASS_CODE_USER_PROG4 ||
+	    (protocol_id & ~(u64)0xff) != 0 ||
+	    (tos_mask & ~(u64)0xff) != 0 ||
+	    (tos_val & ~(u64)0xff) != 0)
+		return -EINVAL;
+
+	reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
+	val = nr64(reg);
+	val &= ~(L3_CLS_IPVER | L3_CLS_PID |
+		 L3_CLS_TOSMASK | L3_CLS_TOS);
+	if (ipv6)
+		val |= L3_CLS_IPVER;
+	val |= (protocol_id << L3_CLS_PID_SHIFT);
+	val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
+	val |= (tos_val << L3_CLS_TOS_SHIFT);
+	nw64(reg, val);
+
+	return 0;
+}
+
+static int tcam_early_init(struct niu *np)
+{
+	unsigned long i;
+	int err;
+
+	tcam_enable(np, 0);
+	tcam_set_lat_and_ratio(np,
+			       DEFAULT_TCAM_LATENCY,
+			       DEFAULT_TCAM_ACCESS_RATIO);
+	for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
+		err = tcam_user_eth_class_enable(np, i, 0);
+		if (err)
+			return err;
+	}
+	for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
+		err = tcam_user_ip_class_enable(np, i, 0);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int tcam_flush_all(struct niu *np)
+{
+	unsigned long i;
+
+	for (i = 0; i < np->parent->tcam_num_entries; i++) {
+		int err = tcam_flush(np, i);
+		if (err)
+			return err;
+	}
+	return 0;
+}
+
+static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
+{
+	return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
+}
+
+#if 0
+static int hash_read(struct niu *np, unsigned long partition,
+		     unsigned long index, unsigned long num_entries,
+		     u64 *data)
+{
+	u64 val = hash_addr_regval(index, num_entries);
+	unsigned long i;
+
+	if (partition >= FCRAM_NUM_PARTITIONS ||
+	    index + num_entries > FCRAM_SIZE)
+		return -EINVAL;
+
+	nw64(HASH_TBL_ADDR(partition), val);
+	for (i = 0; i < num_entries; i++)
+		data[i] = nr64(HASH_TBL_DATA(partition));
+
+	return 0;
+}
+#endif
+
+static int hash_write(struct niu *np, unsigned long partition,
+		      unsigned long index, unsigned long num_entries,
+		      u64 *data)
+{
+	u64 val = hash_addr_regval(index, num_entries);
+	unsigned long i;
+
+	if (partition >= FCRAM_NUM_PARTITIONS ||
+	    index + (num_entries * 8) > FCRAM_SIZE)
+		return -EINVAL;
+
+	nw64(HASH_TBL_ADDR(partition), val);
+	for (i = 0; i < num_entries; i++)
+		nw64(HASH_TBL_DATA(partition), data[i]);
+
+	return 0;
+}
+
+static void fflp_reset(struct niu *np)
+{
+	u64 val;
+
+	nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
+	udelay(10);
+	nw64(FFLP_CFG_1, 0);
+
+	val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
+	nw64(FFLP_CFG_1, val);
+}
+
+static void fflp_set_timings(struct niu *np)
+{
+	u64 val = nr64(FFLP_CFG_1);
+
+	val &= ~FFLP_CFG_1_FFLPINITDONE;
+	val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
+	nw64(FFLP_CFG_1, val);
+
+	val = nr64(FFLP_CFG_1);
+	val |= FFLP_CFG_1_FFLPINITDONE;
+	nw64(FFLP_CFG_1, val);
+
+	val = nr64(FCRAM_REF_TMR);
+	val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
+	val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
+	val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
+	nw64(FCRAM_REF_TMR, val);
+}
+
+static int fflp_set_partition(struct niu *np, u64 partition,
+			      u64 mask, u64 base, int enable)
+{
+	unsigned long reg;
+	u64 val;
+
+	if (partition >= FCRAM_NUM_PARTITIONS ||
+	    (mask & ~(u64)0x1f) != 0 ||
+	    (base & ~(u64)0x1f) != 0)
+		return -EINVAL;
+
+	reg = FLW_PRT_SEL(partition);
+
+	val = nr64(reg);
+	val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
+	val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
+	val |= (base << FLW_PRT_SEL_BASE_SHIFT);
+	if (enable)
+		val |= FLW_PRT_SEL_EXT;
+	nw64(reg, val);
+
+	return 0;
+}
+
+static int fflp_disable_all_partitions(struct niu *np)
+{
+	unsigned long i;
+
+	for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
+		int err = fflp_set_partition(np, 0, 0, 0, 0);
+		if (err)
+			return err;
+	}
+	return 0;
+}
+
+static void fflp_llcsnap_enable(struct niu *np, int on)
+{
+	u64 val = nr64(FFLP_CFG_1);
+
+	if (on)
+		val |= FFLP_CFG_1_LLCSNAP;
+	else
+		val &= ~FFLP_CFG_1_LLCSNAP;
+	nw64(FFLP_CFG_1, val);
+}
+
+static void fflp_errors_enable(struct niu *np, int on)
+{
+	u64 val = nr64(FFLP_CFG_1);
+
+	if (on)
+		val &= ~FFLP_CFG_1_ERRORDIS;
+	else
+		val |= FFLP_CFG_1_ERRORDIS;
+	nw64(FFLP_CFG_1, val);
+}
+
+static int fflp_hash_clear(struct niu *np)
+{
+	struct fcram_hash_ipv4 ent;
+	unsigned long i;
+
+	/* IPV4 hash entry with valid bit clear, rest is don't care.  */
+	memset(&ent, 0, sizeof(ent));
+	ent.header = HASH_HEADER_EXT;
+
+	for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
+		int err = hash_write(np, 0, i, 1, (u64 *) &ent);
+		if (err)
+			return err;
+	}
+	return 0;
+}
+
+static int fflp_early_init(struct niu *np)
+{
+	struct niu_parent *parent;
+	unsigned long flags;
+	int err;
+
+	niu_lock_parent(np, flags);
+
+	parent = np->parent;
+	err = 0;
+	if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
+		if (np->parent->plat_type != PLAT_TYPE_NIU) {
+			fflp_reset(np);
+			fflp_set_timings(np);
+			err = fflp_disable_all_partitions(np);
+			if (err) {
+				netif_printk(np, probe, KERN_DEBUG, np->dev,
+					     "fflp_disable_all_partitions failed, err=%d\n",
+					     err);
+				goto out;
+			}
+		}
+
+		err = tcam_early_init(np);
+		if (err) {
+			netif_printk(np, probe, KERN_DEBUG, np->dev,
+				     "tcam_early_init failed, err=%d\n", err);
+			goto out;
+		}
+		fflp_llcsnap_enable(np, 1);
+		fflp_errors_enable(np, 0);
+		nw64(H1POLY, 0);
+		nw64(H2POLY, 0);
+
+		err = tcam_flush_all(np);
+		if (err) {
+			netif_printk(np, probe, KERN_DEBUG, np->dev,
+				     "tcam_flush_all failed, err=%d\n", err);
+			goto out;
+		}
+		if (np->parent->plat_type != PLAT_TYPE_NIU) {
+			err = fflp_hash_clear(np);
+			if (err) {
+				netif_printk(np, probe, KERN_DEBUG, np->dev,
+					     "fflp_hash_clear failed, err=%d\n",
+					     err);
+				goto out;
+			}
+		}
+
+		vlan_tbl_clear(np);
+
+		parent->flags |= PARENT_FLGS_CLS_HWINIT;
+	}
+out:
+	niu_unlock_parent(np, flags);
+	return err;
+}
+
+static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
+{
+	if (class_code < CLASS_CODE_USER_PROG1 ||
+	    class_code > CLASS_CODE_SCTP_IPV6)
+		return -EINVAL;
+
+	nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
+	return 0;
+}
+
+static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
+{
+	if (class_code < CLASS_CODE_USER_PROG1 ||
+	    class_code > CLASS_CODE_SCTP_IPV6)
+		return -EINVAL;
+
+	nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
+	return 0;
+}
+
+/* Entries for the ports are interleaved in the TCAM */
+static u16 tcam_get_index(struct niu *np, u16 idx)
+{
+	/* One entry reserved for IP fragment rule */
+	if (idx >= (np->clas.tcam_sz - 1))
+		idx = 0;
+	return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
+}
+
+static u16 tcam_get_size(struct niu *np)
+{
+	/* One entry reserved for IP fragment rule */
+	return np->clas.tcam_sz - 1;
+}
+
+static u16 tcam_get_valid_entry_cnt(struct niu *np)
+{
+	/* One entry reserved for IP fragment rule */
+	return np->clas.tcam_valid_entries - 1;
+}
+
+static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
+			      u32 offset, u32 size, u32 truesize)
+{
+	skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, offset, size);
+
+	skb->len += size;
+	skb->data_len += size;
+	skb->truesize += truesize;
+}
+
+static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
+{
+	a >>= PAGE_SHIFT;
+	a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
+
+	return a & (MAX_RBR_RING_SIZE - 1);
+}
+
+static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
+				    struct page ***link)
+{
+	unsigned int h = niu_hash_rxaddr(rp, addr);
+	struct page *p, **pp;
+
+	addr &= PAGE_MASK;
+	pp = &rp->rxhash[h];
+	for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
+		if (p->index == addr) {
+			*link = pp;
+			goto found;
+		}
+	}
+	BUG();
+
+found:
+	return p;
+}
+
+static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
+{
+	unsigned int h = niu_hash_rxaddr(rp, base);
+
+	page->index = base;
+	page->mapping = (struct address_space *) rp->rxhash[h];
+	rp->rxhash[h] = page;
+}
+
+static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
+			    gfp_t mask, int start_index)
+{
+	struct page *page;
+	u64 addr;
+	int i;
+
+	page = alloc_page(mask);
+	if (!page)
+		return -ENOMEM;
+
+	addr = np->ops->map_page(np->device, page, 0,
+				 PAGE_SIZE, DMA_FROM_DEVICE);
+	if (!addr) {
+		__free_page(page);
+		return -ENOMEM;
+	}
+
+	niu_hash_page(rp, page, addr);
+	if (rp->rbr_blocks_per_page > 1)
+		page_ref_add(page, rp->rbr_blocks_per_page - 1);
+
+	for (i = 0; i < rp->rbr_blocks_per_page; i++) {
+		__le32 *rbr = &rp->rbr[start_index + i];
+
+		*rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
+		addr += rp->rbr_block_size;
+	}
+
+	return 0;
+}
+
+static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
+{
+	int index = rp->rbr_index;
+
+	rp->rbr_pending++;
+	if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
+		int err = niu_rbr_add_page(np, rp, mask, index);
+
+		if (unlikely(err)) {
+			rp->rbr_pending--;
+			return;
+		}
+
+		rp->rbr_index += rp->rbr_blocks_per_page;
+		BUG_ON(rp->rbr_index > rp->rbr_table_size);
+		if (rp->rbr_index == rp->rbr_table_size)
+			rp->rbr_index = 0;
+
+		if (rp->rbr_pending >= rp->rbr_kick_thresh) {
+			nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
+			rp->rbr_pending = 0;
+		}
+	}
+}
+
+static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
+{
+	unsigned int index = rp->rcr_index;
+	int num_rcr = 0;
+
+	rp->rx_dropped++;
+	while (1) {
+		struct page *page, **link;
+		u64 addr, val;
+		u32 rcr_size;
+
+		num_rcr++;
+
+		val = le64_to_cpup(&rp->rcr[index]);
+		addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
+			RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
+		page = niu_find_rxpage(rp, addr, &link);
+
+		rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
+					 RCR_ENTRY_PKTBUFSZ_SHIFT];
+		if ((page->index + PAGE_SIZE) - rcr_size == addr) {
+			*link = (struct page *) page->mapping;
+			np->ops->unmap_page(np->device, page->index,
+					    PAGE_SIZE, DMA_FROM_DEVICE);
+			page->index = 0;
+			page->mapping = NULL;
+			__free_page(page);
+			rp->rbr_refill_pending++;
+		}
+
+		index = NEXT_RCR(rp, index);
+		if (!(val & RCR_ENTRY_MULTI))
+			break;
+
+	}
+	rp->rcr_index = index;
+
+	return num_rcr;
+}
+
+static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
+			      struct rx_ring_info *rp)
+{
+	unsigned int index = rp->rcr_index;
+	struct rx_pkt_hdr1 *rh;
+	struct sk_buff *skb;
+	int len, num_rcr;
+
+	skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
+	if (unlikely(!skb))
+		return niu_rx_pkt_ignore(np, rp);
+
+	num_rcr = 0;
+	while (1) {
+		struct page *page, **link;
+		u32 rcr_size, append_size;
+		u64 addr, val, off;
+
+		num_rcr++;
+
+		val = le64_to_cpup(&rp->rcr[index]);
+
+		len = (val & RCR_ENTRY_L2_LEN) >>
+			RCR_ENTRY_L2_LEN_SHIFT;
+		append_size = len + ETH_HLEN + ETH_FCS_LEN;
+
+		addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
+			RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
+		page = niu_find_rxpage(rp, addr, &link);
+
+		rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
+					 RCR_ENTRY_PKTBUFSZ_SHIFT];
+
+		off = addr & ~PAGE_MASK;
+		if (num_rcr == 1) {
+			int ptype;
+
+			ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
+			if ((ptype == RCR_PKT_TYPE_TCP ||
+			     ptype == RCR_PKT_TYPE_UDP) &&
+			    !(val & (RCR_ENTRY_NOPORT |
+				     RCR_ENTRY_ERROR)))
+				skb->ip_summed = CHECKSUM_UNNECESSARY;
+			else
+				skb_checksum_none_assert(skb);
+		} else if (!(val & RCR_ENTRY_MULTI))
+			append_size = append_size - skb->len;
+
+		niu_rx_skb_append(skb, page, off, append_size, rcr_size);
+		if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
+			*link = (struct page *) page->mapping;
+			np->ops->unmap_page(np->device, page->index,
+					    PAGE_SIZE, DMA_FROM_DEVICE);
+			page->index = 0;
+			page->mapping = NULL;
+			rp->rbr_refill_pending++;
+		} else
+			get_page(page);
+
+		index = NEXT_RCR(rp, index);
+		if (!(val & RCR_ENTRY_MULTI))
+			break;
+
+	}
+	rp->rcr_index = index;
+
+	len += sizeof(*rh);
+	len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
+	__pskb_pull_tail(skb, len);
+
+	rh = (struct rx_pkt_hdr1 *) skb->data;
+	if (np->dev->features & NETIF_F_RXHASH)
+		skb_set_hash(skb,
+			     ((u32)rh->hashval2_0 << 24 |
+			      (u32)rh->hashval2_1 << 16 |
+			      (u32)rh->hashval1_1 << 8 |
+			      (u32)rh->hashval1_2 << 0),
+			     PKT_HASH_TYPE_L3);
+	skb_pull(skb, sizeof(*rh));
+
+	rp->rx_packets++;
+	rp->rx_bytes += skb->len;
+
+	skb->protocol = eth_type_trans(skb, np->dev);
+	skb_record_rx_queue(skb, rp->rx_channel);
+	napi_gro_receive(napi, skb);
+
+	return num_rcr;
+}
+
+static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
+{
+	int blocks_per_page = rp->rbr_blocks_per_page;
+	int err, index = rp->rbr_index;
+
+	err = 0;
+	while (index < (rp->rbr_table_size - blocks_per_page)) {
+		err = niu_rbr_add_page(np, rp, mask, index);
+		if (unlikely(err))
+			break;
+
+		index += blocks_per_page;
+	}
+
+	rp->rbr_index = index;
+	return err;
+}
+
+static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
+{
+	int i;
+
+	for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
+		struct page *page;
+
+		page = rp->rxhash[i];
+		while (page) {
+			struct page *next = (struct page *) page->mapping;
+			u64 base = page->index;
+
+			np->ops->unmap_page(np->device, base, PAGE_SIZE,
+					    DMA_FROM_DEVICE);
+			page->index = 0;
+			page->mapping = NULL;
+
+			__free_page(page);
+
+			page = next;
+		}
+	}
+
+	for (i = 0; i < rp->rbr_table_size; i++)
+		rp->rbr[i] = cpu_to_le32(0);
+	rp->rbr_index = 0;
+}
+
+static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
+{
+	struct tx_buff_info *tb = &rp->tx_buffs[idx];
+	struct sk_buff *skb = tb->skb;
+	struct tx_pkt_hdr *tp;
+	u64 tx_flags;
+	int i, len;
+
+	tp = (struct tx_pkt_hdr *) skb->data;
+	tx_flags = le64_to_cpup(&tp->flags);
+
+	rp->tx_packets++;
+	rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
+			 ((tx_flags & TXHDR_PAD) / 2));
+
+	len = skb_headlen(skb);
+	np->ops->unmap_single(np->device, tb->mapping,
+			      len, DMA_TO_DEVICE);
+
+	if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
+		rp->mark_pending--;
+
+	tb->skb = NULL;
+	do {
+		idx = NEXT_TX(rp, idx);
+		len -= MAX_TX_DESC_LEN;
+	} while (len > 0);
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+		tb = &rp->tx_buffs[idx];
+		BUG_ON(tb->skb != NULL);
+		np->ops->unmap_page(np->device, tb->mapping,
+				    skb_frag_size(&skb_shinfo(skb)->frags[i]),
+				    DMA_TO_DEVICE);
+		idx = NEXT_TX(rp, idx);
+	}
+
+	dev_kfree_skb(skb);
+
+	return idx;
+}
+
+#define NIU_TX_WAKEUP_THRESH(rp)		((rp)->pending / 4)
+
+static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
+{
+	struct netdev_queue *txq;
+	u16 pkt_cnt, tmp;
+	int cons, index;
+	u64 cs;
+
+	index = (rp - np->tx_rings);
+	txq = netdev_get_tx_queue(np->dev, index);
+
+	cs = rp->tx_cs;
+	if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
+		goto out;
+
+	tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
+	pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
+		(TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
+
+	rp->last_pkt_cnt = tmp;
+
+	cons = rp->cons;
+
+	netif_printk(np, tx_done, KERN_DEBUG, np->dev,
+		     "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
+
+	while (pkt_cnt--)
+		cons = release_tx_packet(np, rp, cons);
+
+	rp->cons = cons;
+	smp_mb();
+
+out:
+	if (unlikely(netif_tx_queue_stopped(txq) &&
+		     (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
+		__netif_tx_lock(txq, smp_processor_id());
+		if (netif_tx_queue_stopped(txq) &&
+		    (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
+			netif_tx_wake_queue(txq);
+		__netif_tx_unlock(txq);
+	}
+}
+
+static inline void niu_sync_rx_discard_stats(struct niu *np,
+					     struct rx_ring_info *rp,
+					     const int limit)
+{
+	/* This elaborate scheme is needed for reading the RX discard
+	 * counters, as they are only 16-bit and can overflow quickly,
+	 * and because the overflow indication bit is not usable as
+	 * the counter value does not wrap, but remains at max value
+	 * 0xFFFF.
+	 *
+	 * In theory and in practice counters can be lost in between
+	 * reading nr64() and clearing the counter nw64().  For this
+	 * reason, the number of counter clearings nw64() is
+	 * limited/reduced though the limit parameter.
+	 */
+	int rx_channel = rp->rx_channel;
+	u32 misc, wred;
+
+	/* RXMISC (Receive Miscellaneous Discard Count), covers the
+	 * following discard events: IPP (Input Port Process),
+	 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
+	 * Block Ring) prefetch buffer is empty.
+	 */
+	misc = nr64(RXMISC(rx_channel));
+	if (unlikely((misc & RXMISC_COUNT) > limit)) {
+		nw64(RXMISC(rx_channel), 0);
+		rp->rx_errors += misc & RXMISC_COUNT;
+
+		if (unlikely(misc & RXMISC_OFLOW))
+			dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
+				rx_channel);
+
+		netif_printk(np, rx_err, KERN_DEBUG, np->dev,
+			     "rx-%d: MISC drop=%u over=%u\n",
+			     rx_channel, misc, misc-limit);
+	}
+
+	/* WRED (Weighted Random Early Discard) by hardware */
+	wred = nr64(RED_DIS_CNT(rx_channel));
+	if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
+		nw64(RED_DIS_CNT(rx_channel), 0);
+		rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
+
+		if (unlikely(wred & RED_DIS_CNT_OFLOW))
+			dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
+
+		netif_printk(np, rx_err, KERN_DEBUG, np->dev,
+			     "rx-%d: WRED drop=%u over=%u\n",
+			     rx_channel, wred, wred-limit);
+	}
+}
+
+static int niu_rx_work(struct napi_struct *napi, struct niu *np,
+		       struct rx_ring_info *rp, int budget)
+{
+	int qlen, rcr_done = 0, work_done = 0;
+	struct rxdma_mailbox *mbox = rp->mbox;
+	u64 stat;
+
+#if 1
+	stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
+	qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
+#else
+	stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
+	qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
+#endif
+	mbox->rx_dma_ctl_stat = 0;
+	mbox->rcrstat_a = 0;
+
+	netif_printk(np, rx_status, KERN_DEBUG, np->dev,
+		     "%s(chan[%d]), stat[%llx] qlen=%d\n",
+		     __func__, rp->rx_channel, (unsigned long long)stat, qlen);
+
+	rcr_done = work_done = 0;
+	qlen = min(qlen, budget);
+	while (work_done < qlen) {
+		rcr_done += niu_process_rx_pkt(napi, np, rp);
+		work_done++;
+	}
+
+	if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
+		unsigned int i;
+
+		for (i = 0; i < rp->rbr_refill_pending; i++)
+			niu_rbr_refill(np, rp, GFP_ATOMIC);
+		rp->rbr_refill_pending = 0;
+	}
+
+	stat = (RX_DMA_CTL_STAT_MEX |
+		((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
+		((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
+
+	nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
+
+	/* Only sync discards stats when qlen indicate potential for drops */
+	if (qlen > 10)
+		niu_sync_rx_discard_stats(np, rp, 0x7FFF);
+
+	return work_done;
+}
+
+static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
+{
+	u64 v0 = lp->v0;
+	u32 tx_vec = (v0 >> 32);
+	u32 rx_vec = (v0 & 0xffffffff);
+	int i, work_done = 0;
+
+	netif_printk(np, intr, KERN_DEBUG, np->dev,
+		     "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
+
+	for (i = 0; i < np->num_tx_rings; i++) {
+		struct tx_ring_info *rp = &np->tx_rings[i];
+		if (tx_vec & (1 << rp->tx_channel))
+			niu_tx_work(np, rp);
+		nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
+	}
+
+	for (i = 0; i < np->num_rx_rings; i++) {
+		struct rx_ring_info *rp = &np->rx_rings[i];
+
+		if (rx_vec & (1 << rp->rx_channel)) {
+			int this_work_done;
+
+			this_work_done = niu_rx_work(&lp->napi, np, rp,
+						     budget);
+
+			budget -= this_work_done;
+			work_done += this_work_done;
+		}
+		nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
+	}
+
+	return work_done;
+}
+
+static int niu_poll(struct napi_struct *napi, int budget)
+{
+	struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
+	struct niu *np = lp->np;
+	int work_done;
+
+	work_done = niu_poll_core(np, lp, budget);
+
+	if (work_done < budget) {
+		napi_complete_done(napi, work_done);
+		niu_ldg_rearm(np, lp, 1);
+	}
+	return work_done;
+}
+
+static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
+				  u64 stat)
+{
+	netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
+
+	if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
+		pr_cont("RBR_TMOUT ");
+	if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
+		pr_cont("RSP_CNT ");
+	if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
+		pr_cont("BYTE_EN_BUS ");
+	if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
+		pr_cont("RSP_DAT ");
+	if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
+		pr_cont("RCR_ACK ");
+	if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
+		pr_cont("RCR_SHA_PAR ");
+	if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
+		pr_cont("RBR_PRE_PAR ");
+	if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
+		pr_cont("CONFIG ");
+	if (stat & RX_DMA_CTL_STAT_RCRINCON)
+		pr_cont("RCRINCON ");
+	if (stat & RX_DMA_CTL_STAT_RCRFULL)
+		pr_cont("RCRFULL ");
+	if (stat & RX_DMA_CTL_STAT_RBRFULL)
+		pr_cont("RBRFULL ");
+	if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
+		pr_cont("RBRLOGPAGE ");
+	if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
+		pr_cont("CFIGLOGPAGE ");
+	if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
+		pr_cont("DC_FIDO ");
+
+	pr_cont(")\n");
+}
+
+static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
+{
+	u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
+	int err = 0;
+
+
+	if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
+		    RX_DMA_CTL_STAT_PORT_FATAL))
+		err = -EINVAL;
+
+	if (err) {
+		netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
+			   rp->rx_channel,
+			   (unsigned long long) stat);
+
+		niu_log_rxchan_errors(np, rp, stat);
+	}
+
+	nw64(RX_DMA_CTL_STAT(rp->rx_channel),
+	     stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
+
+	return err;
+}
+
+static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
+				  u64 cs)
+{
+	netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
+
+	if (cs & TX_CS_MBOX_ERR)
+		pr_cont("MBOX ");
+	if (cs & TX_CS_PKT_SIZE_ERR)
+		pr_cont("PKT_SIZE ");
+	if (cs & TX_CS_TX_RING_OFLOW)
+		pr_cont("TX_RING_OFLOW ");
+	if (cs & TX_CS_PREF_BUF_PAR_ERR)
+		pr_cont("PREF_BUF_PAR ");
+	if (cs & TX_CS_NACK_PREF)
+		pr_cont("NACK_PREF ");
+	if (cs & TX_CS_NACK_PKT_RD)
+		pr_cont("NACK_PKT_RD ");
+	if (cs & TX_CS_CONF_PART_ERR)
+		pr_cont("CONF_PART ");
+	if (cs & TX_CS_PKT_PRT_ERR)
+		pr_cont("PKT_PTR ");
+
+	pr_cont(")\n");
+}
+
+static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
+{
+	u64 cs, logh, logl;
+
+	cs = nr64(TX_CS(rp->tx_channel));
+	logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
+	logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
+
+	netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
+		   rp->tx_channel,
+		   (unsigned long long)cs,
+		   (unsigned long long)logh,
+		   (unsigned long long)logl);
+
+	niu_log_txchan_errors(np, rp, cs);
+
+	return -ENODEV;
+}
+
+static int niu_mif_interrupt(struct niu *np)
+{
+	u64 mif_status = nr64(MIF_STATUS);
+	int phy_mdint = 0;
+
+	if (np->flags & NIU_FLAGS_XMAC) {
+		u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
+
+		if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
+			phy_mdint = 1;
+	}
+
+	netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
+		   (unsigned long long)mif_status, phy_mdint);
+
+	return -ENODEV;
+}
+
+static void niu_xmac_interrupt(struct niu *np)
+{
+	struct niu_xmac_stats *mp = &np->mac_stats.xmac;
+	u64 val;
+
+	val = nr64_mac(XTXMAC_STATUS);
+	if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
+		mp->tx_frames += TXMAC_FRM_CNT_COUNT;
+	if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
+		mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
+	if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
+		mp->tx_fifo_errors++;
+	if (val & XTXMAC_STATUS_TXMAC_OFLOW)
+		mp->tx_overflow_errors++;
+	if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
+		mp->tx_max_pkt_size_errors++;
+	if (val & XTXMAC_STATUS_TXMAC_UFLOW)
+		mp->tx_underflow_errors++;
+
+	val = nr64_mac(XRXMAC_STATUS);
+	if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
+		mp->rx_local_faults++;
+	if (val & XRXMAC_STATUS_RFLT_DET)
+		mp->rx_remote_faults++;
+	if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
+		mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
+	if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
+		mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
+	if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
+		mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
+	if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
+		mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
+	if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
+		mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
+	if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
+		mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
+	if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
+		mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
+	if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
+		mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
+	if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
+		mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
+	if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
+		mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
+	if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
+		mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
+	if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
+		mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
+	if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
+		mp->rx_octets += RXMAC_BT_CNT_COUNT;
+	if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
+		mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
+	if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
+		mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
+	if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
+		mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
+	if (val & XRXMAC_STATUS_RXUFLOW)
+		mp->rx_underflows++;
+	if (val & XRXMAC_STATUS_RXOFLOW)
+		mp->rx_overflows++;
+
+	val = nr64_mac(XMAC_FC_STAT);
+	if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
+		mp->pause_off_state++;
+	if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
+		mp->pause_on_state++;
+	if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
+		mp->pause_received++;
+}
+
+static void niu_bmac_interrupt(struct niu *np)
+{
+	struct niu_bmac_stats *mp = &np->mac_stats.bmac;
+	u64 val;
+
+	val = nr64_mac(BTXMAC_STATUS);
+	if (val & BTXMAC_STATUS_UNDERRUN)
+		mp->tx_underflow_errors++;
+	if (val & BTXMAC_STATUS_MAX_PKT_ERR)
+		mp->tx_max_pkt_size_errors++;
+	if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
+		mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
+	if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
+		mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
+
+	val = nr64_mac(BRXMAC_STATUS);
+	if (val & BRXMAC_STATUS_OVERFLOW)
+		mp->rx_overflows++;
+	if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
+		mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
+	if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
+		mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
+	if (val & BRXMAC_STATUS_CRC_ERR_EXP)
+		mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
+	if (val & BRXMAC_STATUS_LEN_ERR_EXP)
+		mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
+
+	val = nr64_mac(BMAC_CTRL_STATUS);
+	if (val & BMAC_CTRL_STATUS_NOPAUSE)
+		mp->pause_off_state++;
+	if (val & BMAC_CTRL_STATUS_PAUSE)
+		mp->pause_on_state++;
+	if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
+		mp->pause_received++;
+}
+
+static int niu_mac_interrupt(struct niu *np)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		niu_xmac_interrupt(np);
+	else
+		niu_bmac_interrupt(np);
+
+	return 0;
+}
+
+static void niu_log_device_error(struct niu *np, u64 stat)
+{
+	netdev_err(np->dev, "Core device errors ( ");
+
+	if (stat & SYS_ERR_MASK_META2)
+		pr_cont("META2 ");
+	if (stat & SYS_ERR_MASK_META1)
+		pr_cont("META1 ");
+	if (stat & SYS_ERR_MASK_PEU)
+		pr_cont("PEU ");
+	if (stat & SYS_ERR_MASK_TXC)
+		pr_cont("TXC ");
+	if (stat & SYS_ERR_MASK_RDMC)
+		pr_cont("RDMC ");
+	if (stat & SYS_ERR_MASK_TDMC)
+		pr_cont("TDMC ");
+	if (stat & SYS_ERR_MASK_ZCP)
+		pr_cont("ZCP ");
+	if (stat & SYS_ERR_MASK_FFLP)
+		pr_cont("FFLP ");
+	if (stat & SYS_ERR_MASK_IPP)
+		pr_cont("IPP ");
+	if (stat & SYS_ERR_MASK_MAC)
+		pr_cont("MAC ");
+	if (stat & SYS_ERR_MASK_SMX)
+		pr_cont("SMX ");
+
+	pr_cont(")\n");
+}
+
+static int niu_device_error(struct niu *np)
+{
+	u64 stat = nr64(SYS_ERR_STAT);
+
+	netdev_err(np->dev, "Core device error, stat[%llx]\n",
+		   (unsigned long long)stat);
+
+	niu_log_device_error(np, stat);
+
+	return -ENODEV;
+}
+
+static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
+			      u64 v0, u64 v1, u64 v2)
+{
+
+	int i, err = 0;
+
+	lp->v0 = v0;
+	lp->v1 = v1;
+	lp->v2 = v2;
+
+	if (v1 & 0x00000000ffffffffULL) {
+		u32 rx_vec = (v1 & 0xffffffff);
+
+		for (i = 0; i < np->num_rx_rings; i++) {
+			struct rx_ring_info *rp = &np->rx_rings[i];
+
+			if (rx_vec & (1 << rp->rx_channel)) {
+				int r = niu_rx_error(np, rp);
+				if (r) {
+					err = r;
+				} else {
+					if (!v0)
+						nw64(RX_DMA_CTL_STAT(rp->rx_channel),
+						     RX_DMA_CTL_STAT_MEX);
+				}
+			}
+		}
+	}
+	if (v1 & 0x7fffffff00000000ULL) {
+		u32 tx_vec = (v1 >> 32) & 0x7fffffff;
+
+		for (i = 0; i < np->num_tx_rings; i++) {
+			struct tx_ring_info *rp = &np->tx_rings[i];
+
+			if (tx_vec & (1 << rp->tx_channel)) {
+				int r = niu_tx_error(np, rp);
+				if (r)
+					err = r;
+			}
+		}
+	}
+	if ((v0 | v1) & 0x8000000000000000ULL) {
+		int r = niu_mif_interrupt(np);
+		if (r)
+			err = r;
+	}
+	if (v2) {
+		if (v2 & 0x01ef) {
+			int r = niu_mac_interrupt(np);
+			if (r)
+				err = r;
+		}
+		if (v2 & 0x0210) {
+			int r = niu_device_error(np);
+			if (r)
+				err = r;
+		}
+	}
+
+	if (err)
+		niu_enable_interrupts(np, 0);
+
+	return err;
+}
+
+static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
+			    int ldn)
+{
+	struct rxdma_mailbox *mbox = rp->mbox;
+	u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
+
+	stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
+		      RX_DMA_CTL_STAT_RCRTO);
+	nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
+
+	netif_printk(np, intr, KERN_DEBUG, np->dev,
+		     "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
+}
+
+static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
+			    int ldn)
+{
+	rp->tx_cs = nr64(TX_CS(rp->tx_channel));
+
+	netif_printk(np, intr, KERN_DEBUG, np->dev,
+		     "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
+}
+
+static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
+{
+	struct niu_parent *parent = np->parent;
+	u32 rx_vec, tx_vec;
+	int i;
+
+	tx_vec = (v0 >> 32);
+	rx_vec = (v0 & 0xffffffff);
+
+	for (i = 0; i < np->num_rx_rings; i++) {
+		struct rx_ring_info *rp = &np->rx_rings[i];
+		int ldn = LDN_RXDMA(rp->rx_channel);
+
+		if (parent->ldg_map[ldn] != ldg)
+			continue;
+
+		nw64(LD_IM0(ldn), LD_IM0_MASK);
+		if (rx_vec & (1 << rp->rx_channel))
+			niu_rxchan_intr(np, rp, ldn);
+	}
+
+	for (i = 0; i < np->num_tx_rings; i++) {
+		struct tx_ring_info *rp = &np->tx_rings[i];
+		int ldn = LDN_TXDMA(rp->tx_channel);
+
+		if (parent->ldg_map[ldn] != ldg)
+			continue;
+
+		nw64(LD_IM0(ldn), LD_IM0_MASK);
+		if (tx_vec & (1 << rp->tx_channel))
+			niu_txchan_intr(np, rp, ldn);
+	}
+}
+
+static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
+			      u64 v0, u64 v1, u64 v2)
+{
+	if (likely(napi_schedule_prep(&lp->napi))) {
+		lp->v0 = v0;
+		lp->v1 = v1;
+		lp->v2 = v2;
+		__niu_fastpath_interrupt(np, lp->ldg_num, v0);
+		__napi_schedule(&lp->napi);
+	}
+}
+
+static irqreturn_t niu_interrupt(int irq, void *dev_id)
+{
+	struct niu_ldg *lp = dev_id;
+	struct niu *np = lp->np;
+	int ldg = lp->ldg_num;
+	unsigned long flags;
+	u64 v0, v1, v2;
+
+	if (netif_msg_intr(np))
+		printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
+		       __func__, lp, ldg);
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	v0 = nr64(LDSV0(ldg));
+	v1 = nr64(LDSV1(ldg));
+	v2 = nr64(LDSV2(ldg));
+
+	if (netif_msg_intr(np))
+		pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
+		       (unsigned long long) v0,
+		       (unsigned long long) v1,
+		       (unsigned long long) v2);
+
+	if (unlikely(!v0 && !v1 && !v2)) {
+		spin_unlock_irqrestore(&np->lock, flags);
+		return IRQ_NONE;
+	}
+
+	if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
+		int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
+		if (err)
+			goto out;
+	}
+	if (likely(v0 & ~((u64)1 << LDN_MIF)))
+		niu_schedule_napi(np, lp, v0, v1, v2);
+	else
+		niu_ldg_rearm(np, lp, 1);
+out:
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	return IRQ_HANDLED;
+}
+
+static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
+{
+	if (rp->mbox) {
+		np->ops->free_coherent(np->device,
+				       sizeof(struct rxdma_mailbox),
+				       rp->mbox, rp->mbox_dma);
+		rp->mbox = NULL;
+	}
+	if (rp->rcr) {
+		np->ops->free_coherent(np->device,
+				       MAX_RCR_RING_SIZE * sizeof(__le64),
+				       rp->rcr, rp->rcr_dma);
+		rp->rcr = NULL;
+		rp->rcr_table_size = 0;
+		rp->rcr_index = 0;
+	}
+	if (rp->rbr) {
+		niu_rbr_free(np, rp);
+
+		np->ops->free_coherent(np->device,
+				       MAX_RBR_RING_SIZE * sizeof(__le32),
+				       rp->rbr, rp->rbr_dma);
+		rp->rbr = NULL;
+		rp->rbr_table_size = 0;
+		rp->rbr_index = 0;
+	}
+	kfree(rp->rxhash);
+	rp->rxhash = NULL;
+}
+
+static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
+{
+	if (rp->mbox) {
+		np->ops->free_coherent(np->device,
+				       sizeof(struct txdma_mailbox),
+				       rp->mbox, rp->mbox_dma);
+		rp->mbox = NULL;
+	}
+	if (rp->descr) {
+		int i;
+
+		for (i = 0; i < MAX_TX_RING_SIZE; i++) {
+			if (rp->tx_buffs[i].skb)
+				(void) release_tx_packet(np, rp, i);
+		}
+
+		np->ops->free_coherent(np->device,
+				       MAX_TX_RING_SIZE * sizeof(__le64),
+				       rp->descr, rp->descr_dma);
+		rp->descr = NULL;
+		rp->pending = 0;
+		rp->prod = 0;
+		rp->cons = 0;
+		rp->wrap_bit = 0;
+	}
+}
+
+static void niu_free_channels(struct niu *np)
+{
+	int i;
+
+	if (np->rx_rings) {
+		for (i = 0; i < np->num_rx_rings; i++) {
+			struct rx_ring_info *rp = &np->rx_rings[i];
+
+			niu_free_rx_ring_info(np, rp);
+		}
+		kfree(np->rx_rings);
+		np->rx_rings = NULL;
+		np->num_rx_rings = 0;
+	}
+
+	if (np->tx_rings) {
+		for (i = 0; i < np->num_tx_rings; i++) {
+			struct tx_ring_info *rp = &np->tx_rings[i];
+
+			niu_free_tx_ring_info(np, rp);
+		}
+		kfree(np->tx_rings);
+		np->tx_rings = NULL;
+		np->num_tx_rings = 0;
+	}
+}
+
+static int niu_alloc_rx_ring_info(struct niu *np,
+				  struct rx_ring_info *rp)
+{
+	BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
+
+	rp->rxhash = kcalloc(MAX_RBR_RING_SIZE, sizeof(struct page *),
+			     GFP_KERNEL);
+	if (!rp->rxhash)
+		return -ENOMEM;
+
+	rp->mbox = np->ops->alloc_coherent(np->device,
+					   sizeof(struct rxdma_mailbox),
+					   &rp->mbox_dma, GFP_KERNEL);
+	if (!rp->mbox)
+		return -ENOMEM;
+	if ((unsigned long)rp->mbox & (64UL - 1)) {
+		netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
+			   rp->mbox);
+		return -EINVAL;
+	}
+
+	rp->rcr = np->ops->alloc_coherent(np->device,
+					  MAX_RCR_RING_SIZE * sizeof(__le64),
+					  &rp->rcr_dma, GFP_KERNEL);
+	if (!rp->rcr)
+		return -ENOMEM;
+	if ((unsigned long)rp->rcr & (64UL - 1)) {
+		netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
+			   rp->rcr);
+		return -EINVAL;
+	}
+	rp->rcr_table_size = MAX_RCR_RING_SIZE;
+	rp->rcr_index = 0;
+
+	rp->rbr = np->ops->alloc_coherent(np->device,
+					  MAX_RBR_RING_SIZE * sizeof(__le32),
+					  &rp->rbr_dma, GFP_KERNEL);
+	if (!rp->rbr)
+		return -ENOMEM;
+	if ((unsigned long)rp->rbr & (64UL - 1)) {
+		netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
+			   rp->rbr);
+		return -EINVAL;
+	}
+	rp->rbr_table_size = MAX_RBR_RING_SIZE;
+	rp->rbr_index = 0;
+	rp->rbr_pending = 0;
+
+	return 0;
+}
+
+static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
+{
+	int mtu = np->dev->mtu;
+
+	/* These values are recommended by the HW designers for fair
+	 * utilization of DRR amongst the rings.
+	 */
+	rp->max_burst = mtu + 32;
+	if (rp->max_burst > 4096)
+		rp->max_burst = 4096;
+}
+
+static int niu_alloc_tx_ring_info(struct niu *np,
+				  struct tx_ring_info *rp)
+{
+	BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
+
+	rp->mbox = np->ops->alloc_coherent(np->device,
+					   sizeof(struct txdma_mailbox),
+					   &rp->mbox_dma, GFP_KERNEL);
+	if (!rp->mbox)
+		return -ENOMEM;
+	if ((unsigned long)rp->mbox & (64UL - 1)) {
+		netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
+			   rp->mbox);
+		return -EINVAL;
+	}
+
+	rp->descr = np->ops->alloc_coherent(np->device,
+					    MAX_TX_RING_SIZE * sizeof(__le64),
+					    &rp->descr_dma, GFP_KERNEL);
+	if (!rp->descr)
+		return -ENOMEM;
+	if ((unsigned long)rp->descr & (64UL - 1)) {
+		netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
+			   rp->descr);
+		return -EINVAL;
+	}
+
+	rp->pending = MAX_TX_RING_SIZE;
+	rp->prod = 0;
+	rp->cons = 0;
+	rp->wrap_bit = 0;
+
+	/* XXX make these configurable... XXX */
+	rp->mark_freq = rp->pending / 4;
+
+	niu_set_max_burst(np, rp);
+
+	return 0;
+}
+
+static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
+{
+	u16 bss;
+
+	bss = min(PAGE_SHIFT, 15);
+
+	rp->rbr_block_size = 1 << bss;
+	rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
+
+	rp->rbr_sizes[0] = 256;
+	rp->rbr_sizes[1] = 1024;
+	if (np->dev->mtu > ETH_DATA_LEN) {
+		switch (PAGE_SIZE) {
+		case 4 * 1024:
+			rp->rbr_sizes[2] = 4096;
+			break;
+
+		default:
+			rp->rbr_sizes[2] = 8192;
+			break;
+		}
+	} else {
+		rp->rbr_sizes[2] = 2048;
+	}
+	rp->rbr_sizes[3] = rp->rbr_block_size;
+}
+
+static int niu_alloc_channels(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+	int first_rx_channel, first_tx_channel;
+	int num_rx_rings, num_tx_rings;
+	struct rx_ring_info *rx_rings;
+	struct tx_ring_info *tx_rings;
+	int i, port, err;
+
+	port = np->port;
+	first_rx_channel = first_tx_channel = 0;
+	for (i = 0; i < port; i++) {
+		first_rx_channel += parent->rxchan_per_port[i];
+		first_tx_channel += parent->txchan_per_port[i];
+	}
+
+	num_rx_rings = parent->rxchan_per_port[port];
+	num_tx_rings = parent->txchan_per_port[port];
+
+	rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
+			   GFP_KERNEL);
+	err = -ENOMEM;
+	if (!rx_rings)
+		goto out_err;
+
+	np->num_rx_rings = num_rx_rings;
+	smp_wmb();
+	np->rx_rings = rx_rings;
+
+	netif_set_real_num_rx_queues(np->dev, num_rx_rings);
+
+	for (i = 0; i < np->num_rx_rings; i++) {
+		struct rx_ring_info *rp = &np->rx_rings[i];
+
+		rp->np = np;
+		rp->rx_channel = first_rx_channel + i;
+
+		err = niu_alloc_rx_ring_info(np, rp);
+		if (err)
+			goto out_err;
+
+		niu_size_rbr(np, rp);
+
+		/* XXX better defaults, configurable, etc... XXX */
+		rp->nonsyn_window = 64;
+		rp->nonsyn_threshold = rp->rcr_table_size - 64;
+		rp->syn_window = 64;
+		rp->syn_threshold = rp->rcr_table_size - 64;
+		rp->rcr_pkt_threshold = 16;
+		rp->rcr_timeout = 8;
+		rp->rbr_kick_thresh = RBR_REFILL_MIN;
+		if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
+			rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
+
+		err = niu_rbr_fill(np, rp, GFP_KERNEL);
+		if (err)
+			return err;
+	}
+
+	tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
+			   GFP_KERNEL);
+	err = -ENOMEM;
+	if (!tx_rings)
+		goto out_err;
+
+	np->num_tx_rings = num_tx_rings;
+	smp_wmb();
+	np->tx_rings = tx_rings;
+
+	netif_set_real_num_tx_queues(np->dev, num_tx_rings);
+
+	for (i = 0; i < np->num_tx_rings; i++) {
+		struct tx_ring_info *rp = &np->tx_rings[i];
+
+		rp->np = np;
+		rp->tx_channel = first_tx_channel + i;
+
+		err = niu_alloc_tx_ring_info(np, rp);
+		if (err)
+			goto out_err;
+	}
+
+	return 0;
+
+out_err:
+	niu_free_channels(np);
+	return err;
+}
+
+static int niu_tx_cs_sng_poll(struct niu *np, int channel)
+{
+	int limit = 1000;
+
+	while (--limit > 0) {
+		u64 val = nr64(TX_CS(channel));
+		if (val & TX_CS_SNG_STATE)
+			return 0;
+	}
+	return -ENODEV;
+}
+
+static int niu_tx_channel_stop(struct niu *np, int channel)
+{
+	u64 val = nr64(TX_CS(channel));
+
+	val |= TX_CS_STOP_N_GO;
+	nw64(TX_CS(channel), val);
+
+	return niu_tx_cs_sng_poll(np, channel);
+}
+
+static int niu_tx_cs_reset_poll(struct niu *np, int channel)
+{
+	int limit = 1000;
+
+	while (--limit > 0) {
+		u64 val = nr64(TX_CS(channel));
+		if (!(val & TX_CS_RST))
+			return 0;
+	}
+	return -ENODEV;
+}
+
+static int niu_tx_channel_reset(struct niu *np, int channel)
+{
+	u64 val = nr64(TX_CS(channel));
+	int err;
+
+	val |= TX_CS_RST;
+	nw64(TX_CS(channel), val);
+
+	err = niu_tx_cs_reset_poll(np, channel);
+	if (!err)
+		nw64(TX_RING_KICK(channel), 0);
+
+	return err;
+}
+
+static int niu_tx_channel_lpage_init(struct niu *np, int channel)
+{
+	u64 val;
+
+	nw64(TX_LOG_MASK1(channel), 0);
+	nw64(TX_LOG_VAL1(channel), 0);
+	nw64(TX_LOG_MASK2(channel), 0);
+	nw64(TX_LOG_VAL2(channel), 0);
+	nw64(TX_LOG_PAGE_RELO1(channel), 0);
+	nw64(TX_LOG_PAGE_RELO2(channel), 0);
+	nw64(TX_LOG_PAGE_HDL(channel), 0);
+
+	val  = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
+	val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
+	nw64(TX_LOG_PAGE_VLD(channel), val);
+
+	/* XXX TXDMA 32bit mode? XXX */
+
+	return 0;
+}
+
+static void niu_txc_enable_port(struct niu *np, int on)
+{
+	unsigned long flags;
+	u64 val, mask;
+
+	niu_lock_parent(np, flags);
+	val = nr64(TXC_CONTROL);
+	mask = (u64)1 << np->port;
+	if (on) {
+		val |= TXC_CONTROL_ENABLE | mask;
+	} else {
+		val &= ~mask;
+		if ((val & ~TXC_CONTROL_ENABLE) == 0)
+			val &= ~TXC_CONTROL_ENABLE;
+	}
+	nw64(TXC_CONTROL, val);
+	niu_unlock_parent(np, flags);
+}
+
+static void niu_txc_set_imask(struct niu *np, u64 imask)
+{
+	unsigned long flags;
+	u64 val;
+
+	niu_lock_parent(np, flags);
+	val = nr64(TXC_INT_MASK);
+	val &= ~TXC_INT_MASK_VAL(np->port);
+	val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
+	niu_unlock_parent(np, flags);
+}
+
+static void niu_txc_port_dma_enable(struct niu *np, int on)
+{
+	u64 val = 0;
+
+	if (on) {
+		int i;
+
+		for (i = 0; i < np->num_tx_rings; i++)
+			val |= (1 << np->tx_rings[i].tx_channel);
+	}
+	nw64(TXC_PORT_DMA(np->port), val);
+}
+
+static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
+{
+	int err, channel = rp->tx_channel;
+	u64 val, ring_len;
+
+	err = niu_tx_channel_stop(np, channel);
+	if (err)
+		return err;
+
+	err = niu_tx_channel_reset(np, channel);
+	if (err)
+		return err;
+
+	err = niu_tx_channel_lpage_init(np, channel);
+	if (err)
+		return err;
+
+	nw64(TXC_DMA_MAX(channel), rp->max_burst);
+	nw64(TX_ENT_MSK(channel), 0);
+
+	if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
+			      TX_RNG_CFIG_STADDR)) {
+		netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
+			   channel, (unsigned long long)rp->descr_dma);
+		return -EINVAL;
+	}
+
+	/* The length field in TX_RNG_CFIG is measured in 64-byte
+	 * blocks.  rp->pending is the number of TX descriptors in
+	 * our ring, 8 bytes each, thus we divide by 8 bytes more
+	 * to get the proper value the chip wants.
+	 */
+	ring_len = (rp->pending / 8);
+
+	val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
+	       rp->descr_dma);
+	nw64(TX_RNG_CFIG(channel), val);
+
+	if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
+	    ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
+		netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
+			    channel, (unsigned long long)rp->mbox_dma);
+		return -EINVAL;
+	}
+	nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
+	nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
+
+	nw64(TX_CS(channel), 0);
+
+	rp->last_pkt_cnt = 0;
+
+	return 0;
+}
+
+static void niu_init_rdc_groups(struct niu *np)
+{
+	struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
+	int i, first_table_num = tp->first_table_num;
+
+	for (i = 0; i < tp->num_tables; i++) {
+		struct rdc_table *tbl = &tp->tables[i];
+		int this_table = first_table_num + i;
+		int slot;
+
+		for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
+			nw64(RDC_TBL(this_table, slot),
+			     tbl->rxdma_channel[slot]);
+	}
+
+	nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
+}
+
+static void niu_init_drr_weight(struct niu *np)
+{
+	int type = phy_decode(np->parent->port_phy, np->port);
+	u64 val;
+
+	switch (type) {
+	case PORT_TYPE_10G:
+		val = PT_DRR_WEIGHT_DEFAULT_10G;
+		break;
+
+	case PORT_TYPE_1G:
+	default:
+		val = PT_DRR_WEIGHT_DEFAULT_1G;
+		break;
+	}
+	nw64(PT_DRR_WT(np->port), val);
+}
+
+static int niu_init_hostinfo(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+	struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
+	int i, err, num_alt = niu_num_alt_addr(np);
+	int first_rdc_table = tp->first_table_num;
+
+	err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
+	if (err)
+		return err;
+
+	err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
+	if (err)
+		return err;
+
+	for (i = 0; i < num_alt; i++) {
+		err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int niu_rx_channel_reset(struct niu *np, int channel)
+{
+	return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
+				      RXDMA_CFIG1_RST, 1000, 10,
+				      "RXDMA_CFIG1");
+}
+
+static int niu_rx_channel_lpage_init(struct niu *np, int channel)
+{
+	u64 val;
+
+	nw64(RX_LOG_MASK1(channel), 0);
+	nw64(RX_LOG_VAL1(channel), 0);
+	nw64(RX_LOG_MASK2(channel), 0);
+	nw64(RX_LOG_VAL2(channel), 0);
+	nw64(RX_LOG_PAGE_RELO1(channel), 0);
+	nw64(RX_LOG_PAGE_RELO2(channel), 0);
+	nw64(RX_LOG_PAGE_HDL(channel), 0);
+
+	val  = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
+	val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
+	nw64(RX_LOG_PAGE_VLD(channel), val);
+
+	return 0;
+}
+
+static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
+{
+	u64 val;
+
+	val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
+	       ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
+	       ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
+	       ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
+	nw64(RDC_RED_PARA(rp->rx_channel), val);
+}
+
+static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
+{
+	u64 val = 0;
+
+	*ret = 0;
+	switch (rp->rbr_block_size) {
+	case 4 * 1024:
+		val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
+		break;
+	case 8 * 1024:
+		val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
+		break;
+	case 16 * 1024:
+		val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
+		break;
+	case 32 * 1024:
+		val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
+		break;
+	default:
+		return -EINVAL;
+	}
+	val |= RBR_CFIG_B_VLD2;
+	switch (rp->rbr_sizes[2]) {
+	case 2 * 1024:
+		val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
+		break;
+	case 4 * 1024:
+		val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
+		break;
+	case 8 * 1024:
+		val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
+		break;
+	case 16 * 1024:
+		val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+	val |= RBR_CFIG_B_VLD1;
+	switch (rp->rbr_sizes[1]) {
+	case 1 * 1024:
+		val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
+		break;
+	case 2 * 1024:
+		val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
+		break;
+	case 4 * 1024:
+		val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
+		break;
+	case 8 * 1024:
+		val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+	val |= RBR_CFIG_B_VLD0;
+	switch (rp->rbr_sizes[0]) {
+	case 256:
+		val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
+		break;
+	case 512:
+		val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
+		break;
+	case 1 * 1024:
+		val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
+		break;
+	case 2 * 1024:
+		val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	*ret = val;
+	return 0;
+}
+
+static int niu_enable_rx_channel(struct niu *np, int channel, int on)
+{
+	u64 val = nr64(RXDMA_CFIG1(channel));
+	int limit;
+
+	if (on)
+		val |= RXDMA_CFIG1_EN;
+	else
+		val &= ~RXDMA_CFIG1_EN;
+	nw64(RXDMA_CFIG1(channel), val);
+
+	limit = 1000;
+	while (--limit > 0) {
+		if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
+			break;
+		udelay(10);
+	}
+	if (limit <= 0)
+		return -ENODEV;
+	return 0;
+}
+
+static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
+{
+	int err, channel = rp->rx_channel;
+	u64 val;
+
+	err = niu_rx_channel_reset(np, channel);
+	if (err)
+		return err;
+
+	err = niu_rx_channel_lpage_init(np, channel);
+	if (err)
+		return err;
+
+	niu_rx_channel_wred_init(np, rp);
+
+	nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
+	nw64(RX_DMA_CTL_STAT(channel),
+	     (RX_DMA_CTL_STAT_MEX |
+	      RX_DMA_CTL_STAT_RCRTHRES |
+	      RX_DMA_CTL_STAT_RCRTO |
+	      RX_DMA_CTL_STAT_RBR_EMPTY));
+	nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
+	nw64(RXDMA_CFIG2(channel),
+	     ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
+	      RXDMA_CFIG2_FULL_HDR));
+	nw64(RBR_CFIG_A(channel),
+	     ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
+	     (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
+	err = niu_compute_rbr_cfig_b(rp, &val);
+	if (err)
+		return err;
+	nw64(RBR_CFIG_B(channel), val);
+	nw64(RCRCFIG_A(channel),
+	     ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
+	     (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
+	nw64(RCRCFIG_B(channel),
+	     ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
+	     RCRCFIG_B_ENTOUT |
+	     ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
+
+	err = niu_enable_rx_channel(np, channel, 1);
+	if (err)
+		return err;
+
+	nw64(RBR_KICK(channel), rp->rbr_index);
+
+	val = nr64(RX_DMA_CTL_STAT(channel));
+	val |= RX_DMA_CTL_STAT_RBR_EMPTY;
+	nw64(RX_DMA_CTL_STAT(channel), val);
+
+	return 0;
+}
+
+static int niu_init_rx_channels(struct niu *np)
+{
+	unsigned long flags;
+	u64 seed = jiffies_64;
+	int err, i;
+
+	niu_lock_parent(np, flags);
+	nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
+	nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
+	niu_unlock_parent(np, flags);
+
+	/* XXX RXDMA 32bit mode? XXX */
+
+	niu_init_rdc_groups(np);
+	niu_init_drr_weight(np);
+
+	err = niu_init_hostinfo(np);
+	if (err)
+		return err;
+
+	for (i = 0; i < np->num_rx_rings; i++) {
+		struct rx_ring_info *rp = &np->rx_rings[i];
+
+		err = niu_init_one_rx_channel(np, rp);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int niu_set_ip_frag_rule(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+	struct niu_classifier *cp = &np->clas;
+	struct niu_tcam_entry *tp;
+	int index, err;
+
+	index = cp->tcam_top;
+	tp = &parent->tcam[index];
+
+	/* Note that the noport bit is the same in both ipv4 and
+	 * ipv6 format TCAM entries.
+	 */
+	memset(tp, 0, sizeof(*tp));
+	tp->key[1] = TCAM_V4KEY1_NOPORT;
+	tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
+	tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
+			  ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
+	err = tcam_write(np, index, tp->key, tp->key_mask);
+	if (err)
+		return err;
+	err = tcam_assoc_write(np, index, tp->assoc_data);
+	if (err)
+		return err;
+	tp->valid = 1;
+	cp->tcam_valid_entries++;
+
+	return 0;
+}
+
+static int niu_init_classifier_hw(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+	struct niu_classifier *cp = &np->clas;
+	int i, err;
+
+	nw64(H1POLY, cp->h1_init);
+	nw64(H2POLY, cp->h2_init);
+
+	err = niu_init_hostinfo(np);
+	if (err)
+		return err;
+
+	for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
+		struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
+
+		vlan_tbl_write(np, i, np->port,
+			       vp->vlan_pref, vp->rdc_num);
+	}
+
+	for (i = 0; i < cp->num_alt_mac_mappings; i++) {
+		struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
+
+		err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
+						ap->rdc_num, ap->mac_pref);
+		if (err)
+			return err;
+	}
+
+	for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
+		int index = i - CLASS_CODE_USER_PROG1;
+
+		err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
+		if (err)
+			return err;
+		err = niu_set_flow_key(np, i, parent->flow_key[index]);
+		if (err)
+			return err;
+	}
+
+	err = niu_set_ip_frag_rule(np);
+	if (err)
+		return err;
+
+	tcam_enable(np, 1);
+
+	return 0;
+}
+
+static int niu_zcp_write(struct niu *np, int index, u64 *data)
+{
+	nw64(ZCP_RAM_DATA0, data[0]);
+	nw64(ZCP_RAM_DATA1, data[1]);
+	nw64(ZCP_RAM_DATA2, data[2]);
+	nw64(ZCP_RAM_DATA3, data[3]);
+	nw64(ZCP_RAM_DATA4, data[4]);
+	nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
+	nw64(ZCP_RAM_ACC,
+	     (ZCP_RAM_ACC_WRITE |
+	      (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
+	      (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
+
+	return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
+				   1000, 100);
+}
+
+static int niu_zcp_read(struct niu *np, int index, u64 *data)
+{
+	int err;
+
+	err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
+				  1000, 100);
+	if (err) {
+		netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
+			   (unsigned long long)nr64(ZCP_RAM_ACC));
+		return err;
+	}
+
+	nw64(ZCP_RAM_ACC,
+	     (ZCP_RAM_ACC_READ |
+	      (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
+	      (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
+
+	err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
+				  1000, 100);
+	if (err) {
+		netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
+			   (unsigned long long)nr64(ZCP_RAM_ACC));
+		return err;
+	}
+
+	data[0] = nr64(ZCP_RAM_DATA0);
+	data[1] = nr64(ZCP_RAM_DATA1);
+	data[2] = nr64(ZCP_RAM_DATA2);
+	data[3] = nr64(ZCP_RAM_DATA3);
+	data[4] = nr64(ZCP_RAM_DATA4);
+
+	return 0;
+}
+
+static void niu_zcp_cfifo_reset(struct niu *np)
+{
+	u64 val = nr64(RESET_CFIFO);
+
+	val |= RESET_CFIFO_RST(np->port);
+	nw64(RESET_CFIFO, val);
+	udelay(10);
+
+	val &= ~RESET_CFIFO_RST(np->port);
+	nw64(RESET_CFIFO, val);
+}
+
+static int niu_init_zcp(struct niu *np)
+{
+	u64 data[5], rbuf[5];
+	int i, max, err;
+
+	if (np->parent->plat_type != PLAT_TYPE_NIU) {
+		if (np->port == 0 || np->port == 1)
+			max = ATLAS_P0_P1_CFIFO_ENTRIES;
+		else
+			max = ATLAS_P2_P3_CFIFO_ENTRIES;
+	} else
+		max = NIU_CFIFO_ENTRIES;
+
+	data[0] = 0;
+	data[1] = 0;
+	data[2] = 0;
+	data[3] = 0;
+	data[4] = 0;
+
+	for (i = 0; i < max; i++) {
+		err = niu_zcp_write(np, i, data);
+		if (err)
+			return err;
+		err = niu_zcp_read(np, i, rbuf);
+		if (err)
+			return err;
+	}
+
+	niu_zcp_cfifo_reset(np);
+	nw64(CFIFO_ECC(np->port), 0);
+	nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
+	(void) nr64(ZCP_INT_STAT);
+	nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
+
+	return 0;
+}
+
+static void niu_ipp_write(struct niu *np, int index, u64 *data)
+{
+	u64 val = nr64_ipp(IPP_CFIG);
+
+	nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
+	nw64_ipp(IPP_DFIFO_WR_PTR, index);
+	nw64_ipp(IPP_DFIFO_WR0, data[0]);
+	nw64_ipp(IPP_DFIFO_WR1, data[1]);
+	nw64_ipp(IPP_DFIFO_WR2, data[2]);
+	nw64_ipp(IPP_DFIFO_WR3, data[3]);
+	nw64_ipp(IPP_DFIFO_WR4, data[4]);
+	nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
+}
+
+static void niu_ipp_read(struct niu *np, int index, u64 *data)
+{
+	nw64_ipp(IPP_DFIFO_RD_PTR, index);
+	data[0] = nr64_ipp(IPP_DFIFO_RD0);
+	data[1] = nr64_ipp(IPP_DFIFO_RD1);
+	data[2] = nr64_ipp(IPP_DFIFO_RD2);
+	data[3] = nr64_ipp(IPP_DFIFO_RD3);
+	data[4] = nr64_ipp(IPP_DFIFO_RD4);
+}
+
+static int niu_ipp_reset(struct niu *np)
+{
+	return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
+					  1000, 100, "IPP_CFIG");
+}
+
+static int niu_init_ipp(struct niu *np)
+{
+	u64 data[5], rbuf[5], val;
+	int i, max, err;
+
+	if (np->parent->plat_type != PLAT_TYPE_NIU) {
+		if (np->port == 0 || np->port == 1)
+			max = ATLAS_P0_P1_DFIFO_ENTRIES;
+		else
+			max = ATLAS_P2_P3_DFIFO_ENTRIES;
+	} else
+		max = NIU_DFIFO_ENTRIES;
+
+	data[0] = 0;
+	data[1] = 0;
+	data[2] = 0;
+	data[3] = 0;
+	data[4] = 0;
+
+	for (i = 0; i < max; i++) {
+		niu_ipp_write(np, i, data);
+		niu_ipp_read(np, i, rbuf);
+	}
+
+	(void) nr64_ipp(IPP_INT_STAT);
+	(void) nr64_ipp(IPP_INT_STAT);
+
+	err = niu_ipp_reset(np);
+	if (err)
+		return err;
+
+	(void) nr64_ipp(IPP_PKT_DIS);
+	(void) nr64_ipp(IPP_BAD_CS_CNT);
+	(void) nr64_ipp(IPP_ECC);
+
+	(void) nr64_ipp(IPP_INT_STAT);
+
+	nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
+
+	val = nr64_ipp(IPP_CFIG);
+	val &= ~IPP_CFIG_IP_MAX_PKT;
+	val |= (IPP_CFIG_IPP_ENABLE |
+		IPP_CFIG_DFIFO_ECC_EN |
+		IPP_CFIG_DROP_BAD_CRC |
+		IPP_CFIG_CKSUM_EN |
+		(0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
+	nw64_ipp(IPP_CFIG, val);
+
+	return 0;
+}
+
+static void niu_handle_led(struct niu *np, int status)
+{
+	u64 val;
+	val = nr64_mac(XMAC_CONFIG);
+
+	if ((np->flags & NIU_FLAGS_10G) != 0 &&
+	    (np->flags & NIU_FLAGS_FIBER) != 0) {
+		if (status) {
+			val |= XMAC_CONFIG_LED_POLARITY;
+			val &= ~XMAC_CONFIG_FORCE_LED_ON;
+		} else {
+			val |= XMAC_CONFIG_FORCE_LED_ON;
+			val &= ~XMAC_CONFIG_LED_POLARITY;
+		}
+	}
+
+	nw64_mac(XMAC_CONFIG, val);
+}
+
+static void niu_init_xif_xmac(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	u64 val;
+
+	if (np->flags & NIU_FLAGS_XCVR_SERDES) {
+		val = nr64(MIF_CONFIG);
+		val |= MIF_CONFIG_ATCA_GE;
+		nw64(MIF_CONFIG, val);
+	}
+
+	val = nr64_mac(XMAC_CONFIG);
+	val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
+
+	val |= XMAC_CONFIG_TX_OUTPUT_EN;
+
+	if (lp->loopback_mode == LOOPBACK_MAC) {
+		val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
+		val |= XMAC_CONFIG_LOOPBACK;
+	} else {
+		val &= ~XMAC_CONFIG_LOOPBACK;
+	}
+
+	if (np->flags & NIU_FLAGS_10G) {
+		val &= ~XMAC_CONFIG_LFS_DISABLE;
+	} else {
+		val |= XMAC_CONFIG_LFS_DISABLE;
+		if (!(np->flags & NIU_FLAGS_FIBER) &&
+		    !(np->flags & NIU_FLAGS_XCVR_SERDES))
+			val |= XMAC_CONFIG_1G_PCS_BYPASS;
+		else
+			val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
+	}
+
+	val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
+
+	if (lp->active_speed == SPEED_100)
+		val |= XMAC_CONFIG_SEL_CLK_25MHZ;
+	else
+		val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
+
+	nw64_mac(XMAC_CONFIG, val);
+
+	val = nr64_mac(XMAC_CONFIG);
+	val &= ~XMAC_CONFIG_MODE_MASK;
+	if (np->flags & NIU_FLAGS_10G) {
+		val |= XMAC_CONFIG_MODE_XGMII;
+	} else {
+		if (lp->active_speed == SPEED_1000)
+			val |= XMAC_CONFIG_MODE_GMII;
+		else
+			val |= XMAC_CONFIG_MODE_MII;
+	}
+
+	nw64_mac(XMAC_CONFIG, val);
+}
+
+static void niu_init_xif_bmac(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	u64 val;
+
+	val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
+
+	if (lp->loopback_mode == LOOPBACK_MAC)
+		val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
+	else
+		val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
+
+	if (lp->active_speed == SPEED_1000)
+		val |= BMAC_XIF_CONFIG_GMII_MODE;
+	else
+		val &= ~BMAC_XIF_CONFIG_GMII_MODE;
+
+	val &= ~(BMAC_XIF_CONFIG_LINK_LED |
+		 BMAC_XIF_CONFIG_LED_POLARITY);
+
+	if (!(np->flags & NIU_FLAGS_10G) &&
+	    !(np->flags & NIU_FLAGS_FIBER) &&
+	    lp->active_speed == SPEED_100)
+		val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
+	else
+		val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
+
+	nw64_mac(BMAC_XIF_CONFIG, val);
+}
+
+static void niu_init_xif(struct niu *np)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		niu_init_xif_xmac(np);
+	else
+		niu_init_xif_bmac(np);
+}
+
+static void niu_pcs_mii_reset(struct niu *np)
+{
+	int limit = 1000;
+	u64 val = nr64_pcs(PCS_MII_CTL);
+	val |= PCS_MII_CTL_RST;
+	nw64_pcs(PCS_MII_CTL, val);
+	while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
+		udelay(100);
+		val = nr64_pcs(PCS_MII_CTL);
+	}
+}
+
+static void niu_xpcs_reset(struct niu *np)
+{
+	int limit = 1000;
+	u64 val = nr64_xpcs(XPCS_CONTROL1);
+	val |= XPCS_CONTROL1_RESET;
+	nw64_xpcs(XPCS_CONTROL1, val);
+	while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
+		udelay(100);
+		val = nr64_xpcs(XPCS_CONTROL1);
+	}
+}
+
+static int niu_init_pcs(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+	u64 val;
+
+	switch (np->flags & (NIU_FLAGS_10G |
+			     NIU_FLAGS_FIBER |
+			     NIU_FLAGS_XCVR_SERDES)) {
+	case NIU_FLAGS_FIBER:
+		/* 1G fiber */
+		nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
+		nw64_pcs(PCS_DPATH_MODE, 0);
+		niu_pcs_mii_reset(np);
+		break;
+
+	case NIU_FLAGS_10G:
+	case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
+	case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
+		/* 10G SERDES */
+		if (!(np->flags & NIU_FLAGS_XMAC))
+			return -EINVAL;
+
+		/* 10G copper or fiber */
+		val = nr64_mac(XMAC_CONFIG);
+		val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
+		nw64_mac(XMAC_CONFIG, val);
+
+		niu_xpcs_reset(np);
+
+		val = nr64_xpcs(XPCS_CONTROL1);
+		if (lp->loopback_mode == LOOPBACK_PHY)
+			val |= XPCS_CONTROL1_LOOPBACK;
+		else
+			val &= ~XPCS_CONTROL1_LOOPBACK;
+		nw64_xpcs(XPCS_CONTROL1, val);
+
+		nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
+		(void) nr64_xpcs(XPCS_SYMERR_CNT01);
+		(void) nr64_xpcs(XPCS_SYMERR_CNT23);
+		break;
+
+
+	case NIU_FLAGS_XCVR_SERDES:
+		/* 1G SERDES */
+		niu_pcs_mii_reset(np);
+		nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
+		nw64_pcs(PCS_DPATH_MODE, 0);
+		break;
+
+	case 0:
+		/* 1G copper */
+	case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
+		/* 1G RGMII FIBER */
+		nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
+		niu_pcs_mii_reset(np);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int niu_reset_tx_xmac(struct niu *np)
+{
+	return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
+					  (XTXMAC_SW_RST_REG_RS |
+					   XTXMAC_SW_RST_SOFT_RST),
+					  1000, 100, "XTXMAC_SW_RST");
+}
+
+static int niu_reset_tx_bmac(struct niu *np)
+{
+	int limit;
+
+	nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
+	limit = 1000;
+	while (--limit >= 0) {
+		if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
+			break;
+		udelay(100);
+	}
+	if (limit < 0) {
+		dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
+			np->port,
+			(unsigned long long) nr64_mac(BTXMAC_SW_RST));
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int niu_reset_tx_mac(struct niu *np)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		return niu_reset_tx_xmac(np);
+	else
+		return niu_reset_tx_bmac(np);
+}
+
+static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
+{
+	u64 val;
+
+	val = nr64_mac(XMAC_MIN);
+	val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
+		 XMAC_MIN_RX_MIN_PKT_SIZE);
+	val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
+	val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
+	nw64_mac(XMAC_MIN, val);
+
+	nw64_mac(XMAC_MAX, max);
+
+	nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
+
+	val = nr64_mac(XMAC_IPG);
+	if (np->flags & NIU_FLAGS_10G) {
+		val &= ~XMAC_IPG_IPG_XGMII;
+		val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
+	} else {
+		val &= ~XMAC_IPG_IPG_MII_GMII;
+		val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
+	}
+	nw64_mac(XMAC_IPG, val);
+
+	val = nr64_mac(XMAC_CONFIG);
+	val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
+		 XMAC_CONFIG_STRETCH_MODE |
+		 XMAC_CONFIG_VAR_MIN_IPG_EN |
+		 XMAC_CONFIG_TX_ENABLE);
+	nw64_mac(XMAC_CONFIG, val);
+
+	nw64_mac(TXMAC_FRM_CNT, 0);
+	nw64_mac(TXMAC_BYTE_CNT, 0);
+}
+
+static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
+{
+	u64 val;
+
+	nw64_mac(BMAC_MIN_FRAME, min);
+	nw64_mac(BMAC_MAX_FRAME, max);
+
+	nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
+	nw64_mac(BMAC_CTRL_TYPE, 0x8808);
+	nw64_mac(BMAC_PREAMBLE_SIZE, 7);
+
+	val = nr64_mac(BTXMAC_CONFIG);
+	val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
+		 BTXMAC_CONFIG_ENABLE);
+	nw64_mac(BTXMAC_CONFIG, val);
+}
+
+static void niu_init_tx_mac(struct niu *np)
+{
+	u64 min, max;
+
+	min = 64;
+	if (np->dev->mtu > ETH_DATA_LEN)
+		max = 9216;
+	else
+		max = 1522;
+
+	/* The XMAC_MIN register only accepts values for TX min which
+	 * have the low 3 bits cleared.
+	 */
+	BUG_ON(min & 0x7);
+
+	if (np->flags & NIU_FLAGS_XMAC)
+		niu_init_tx_xmac(np, min, max);
+	else
+		niu_init_tx_bmac(np, min, max);
+}
+
+static int niu_reset_rx_xmac(struct niu *np)
+{
+	int limit;
+
+	nw64_mac(XRXMAC_SW_RST,
+		 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
+	limit = 1000;
+	while (--limit >= 0) {
+		if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
+						 XRXMAC_SW_RST_SOFT_RST)))
+			break;
+		udelay(100);
+	}
+	if (limit < 0) {
+		dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
+			np->port,
+			(unsigned long long) nr64_mac(XRXMAC_SW_RST));
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int niu_reset_rx_bmac(struct niu *np)
+{
+	int limit;
+
+	nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
+	limit = 1000;
+	while (--limit >= 0) {
+		if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
+			break;
+		udelay(100);
+	}
+	if (limit < 0) {
+		dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
+			np->port,
+			(unsigned long long) nr64_mac(BRXMAC_SW_RST));
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int niu_reset_rx_mac(struct niu *np)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		return niu_reset_rx_xmac(np);
+	else
+		return niu_reset_rx_bmac(np);
+}
+
+static void niu_init_rx_xmac(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+	struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
+	int first_rdc_table = tp->first_table_num;
+	unsigned long i;
+	u64 val;
+
+	nw64_mac(XMAC_ADD_FILT0, 0);
+	nw64_mac(XMAC_ADD_FILT1, 0);
+	nw64_mac(XMAC_ADD_FILT2, 0);
+	nw64_mac(XMAC_ADD_FILT12_MASK, 0);
+	nw64_mac(XMAC_ADD_FILT00_MASK, 0);
+	for (i = 0; i < MAC_NUM_HASH; i++)
+		nw64_mac(XMAC_HASH_TBL(i), 0);
+	nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
+	niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
+	niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
+
+	val = nr64_mac(XMAC_CONFIG);
+	val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
+		 XMAC_CONFIG_PROMISCUOUS |
+		 XMAC_CONFIG_PROMISC_GROUP |
+		 XMAC_CONFIG_ERR_CHK_DIS |
+		 XMAC_CONFIG_RX_CRC_CHK_DIS |
+		 XMAC_CONFIG_RESERVED_MULTICAST |
+		 XMAC_CONFIG_RX_CODEV_CHK_DIS |
+		 XMAC_CONFIG_ADDR_FILTER_EN |
+		 XMAC_CONFIG_RCV_PAUSE_ENABLE |
+		 XMAC_CONFIG_STRIP_CRC |
+		 XMAC_CONFIG_PASS_FLOW_CTRL |
+		 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
+	val |= (XMAC_CONFIG_HASH_FILTER_EN);
+	nw64_mac(XMAC_CONFIG, val);
+
+	nw64_mac(RXMAC_BT_CNT, 0);
+	nw64_mac(RXMAC_BC_FRM_CNT, 0);
+	nw64_mac(RXMAC_MC_FRM_CNT, 0);
+	nw64_mac(RXMAC_FRAG_CNT, 0);
+	nw64_mac(RXMAC_HIST_CNT1, 0);
+	nw64_mac(RXMAC_HIST_CNT2, 0);
+	nw64_mac(RXMAC_HIST_CNT3, 0);
+	nw64_mac(RXMAC_HIST_CNT4, 0);
+	nw64_mac(RXMAC_HIST_CNT5, 0);
+	nw64_mac(RXMAC_HIST_CNT6, 0);
+	nw64_mac(RXMAC_HIST_CNT7, 0);
+	nw64_mac(RXMAC_MPSZER_CNT, 0);
+	nw64_mac(RXMAC_CRC_ER_CNT, 0);
+	nw64_mac(RXMAC_CD_VIO_CNT, 0);
+	nw64_mac(LINK_FAULT_CNT, 0);
+}
+
+static void niu_init_rx_bmac(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+	struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
+	int first_rdc_table = tp->first_table_num;
+	unsigned long i;
+	u64 val;
+
+	nw64_mac(BMAC_ADD_FILT0, 0);
+	nw64_mac(BMAC_ADD_FILT1, 0);
+	nw64_mac(BMAC_ADD_FILT2, 0);
+	nw64_mac(BMAC_ADD_FILT12_MASK, 0);
+	nw64_mac(BMAC_ADD_FILT00_MASK, 0);
+	for (i = 0; i < MAC_NUM_HASH; i++)
+		nw64_mac(BMAC_HASH_TBL(i), 0);
+	niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
+	niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
+	nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
+
+	val = nr64_mac(BRXMAC_CONFIG);
+	val &= ~(BRXMAC_CONFIG_ENABLE |
+		 BRXMAC_CONFIG_STRIP_PAD |
+		 BRXMAC_CONFIG_STRIP_FCS |
+		 BRXMAC_CONFIG_PROMISC |
+		 BRXMAC_CONFIG_PROMISC_GRP |
+		 BRXMAC_CONFIG_ADDR_FILT_EN |
+		 BRXMAC_CONFIG_DISCARD_DIS);
+	val |= (BRXMAC_CONFIG_HASH_FILT_EN);
+	nw64_mac(BRXMAC_CONFIG, val);
+
+	val = nr64_mac(BMAC_ADDR_CMPEN);
+	val |= BMAC_ADDR_CMPEN_EN0;
+	nw64_mac(BMAC_ADDR_CMPEN, val);
+}
+
+static void niu_init_rx_mac(struct niu *np)
+{
+	niu_set_primary_mac(np, np->dev->dev_addr);
+
+	if (np->flags & NIU_FLAGS_XMAC)
+		niu_init_rx_xmac(np);
+	else
+		niu_init_rx_bmac(np);
+}
+
+static void niu_enable_tx_xmac(struct niu *np, int on)
+{
+	u64 val = nr64_mac(XMAC_CONFIG);
+
+	if (on)
+		val |= XMAC_CONFIG_TX_ENABLE;
+	else
+		val &= ~XMAC_CONFIG_TX_ENABLE;
+	nw64_mac(XMAC_CONFIG, val);
+}
+
+static void niu_enable_tx_bmac(struct niu *np, int on)
+{
+	u64 val = nr64_mac(BTXMAC_CONFIG);
+
+	if (on)
+		val |= BTXMAC_CONFIG_ENABLE;
+	else
+		val &= ~BTXMAC_CONFIG_ENABLE;
+	nw64_mac(BTXMAC_CONFIG, val);
+}
+
+static void niu_enable_tx_mac(struct niu *np, int on)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		niu_enable_tx_xmac(np, on);
+	else
+		niu_enable_tx_bmac(np, on);
+}
+
+static void niu_enable_rx_xmac(struct niu *np, int on)
+{
+	u64 val = nr64_mac(XMAC_CONFIG);
+
+	val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
+		 XMAC_CONFIG_PROMISCUOUS);
+
+	if (np->flags & NIU_FLAGS_MCAST)
+		val |= XMAC_CONFIG_HASH_FILTER_EN;
+	if (np->flags & NIU_FLAGS_PROMISC)
+		val |= XMAC_CONFIG_PROMISCUOUS;
+
+	if (on)
+		val |= XMAC_CONFIG_RX_MAC_ENABLE;
+	else
+		val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
+	nw64_mac(XMAC_CONFIG, val);
+}
+
+static void niu_enable_rx_bmac(struct niu *np, int on)
+{
+	u64 val = nr64_mac(BRXMAC_CONFIG);
+
+	val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
+		 BRXMAC_CONFIG_PROMISC);
+
+	if (np->flags & NIU_FLAGS_MCAST)
+		val |= BRXMAC_CONFIG_HASH_FILT_EN;
+	if (np->flags & NIU_FLAGS_PROMISC)
+		val |= BRXMAC_CONFIG_PROMISC;
+
+	if (on)
+		val |= BRXMAC_CONFIG_ENABLE;
+	else
+		val &= ~BRXMAC_CONFIG_ENABLE;
+	nw64_mac(BRXMAC_CONFIG, val);
+}
+
+static void niu_enable_rx_mac(struct niu *np, int on)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		niu_enable_rx_xmac(np, on);
+	else
+		niu_enable_rx_bmac(np, on);
+}
+
+static int niu_init_mac(struct niu *np)
+{
+	int err;
+
+	niu_init_xif(np);
+	err = niu_init_pcs(np);
+	if (err)
+		return err;
+
+	err = niu_reset_tx_mac(np);
+	if (err)
+		return err;
+	niu_init_tx_mac(np);
+	err = niu_reset_rx_mac(np);
+	if (err)
+		return err;
+	niu_init_rx_mac(np);
+
+	/* This looks hookey but the RX MAC reset we just did will
+	 * undo some of the state we setup in niu_init_tx_mac() so we
+	 * have to call it again.  In particular, the RX MAC reset will
+	 * set the XMAC_MAX register back to it's default value.
+	 */
+	niu_init_tx_mac(np);
+	niu_enable_tx_mac(np, 1);
+
+	niu_enable_rx_mac(np, 1);
+
+	return 0;
+}
+
+static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
+{
+	(void) niu_tx_channel_stop(np, rp->tx_channel);
+}
+
+static void niu_stop_tx_channels(struct niu *np)
+{
+	int i;
+
+	for (i = 0; i < np->num_tx_rings; i++) {
+		struct tx_ring_info *rp = &np->tx_rings[i];
+
+		niu_stop_one_tx_channel(np, rp);
+	}
+}
+
+static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
+{
+	(void) niu_tx_channel_reset(np, rp->tx_channel);
+}
+
+static void niu_reset_tx_channels(struct niu *np)
+{
+	int i;
+
+	for (i = 0; i < np->num_tx_rings; i++) {
+		struct tx_ring_info *rp = &np->tx_rings[i];
+
+		niu_reset_one_tx_channel(np, rp);
+	}
+}
+
+static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
+{
+	(void) niu_enable_rx_channel(np, rp->rx_channel, 0);
+}
+
+static void niu_stop_rx_channels(struct niu *np)
+{
+	int i;
+
+	for (i = 0; i < np->num_rx_rings; i++) {
+		struct rx_ring_info *rp = &np->rx_rings[i];
+
+		niu_stop_one_rx_channel(np, rp);
+	}
+}
+
+static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
+{
+	int channel = rp->rx_channel;
+
+	(void) niu_rx_channel_reset(np, channel);
+	nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
+	nw64(RX_DMA_CTL_STAT(channel), 0);
+	(void) niu_enable_rx_channel(np, channel, 0);
+}
+
+static void niu_reset_rx_channels(struct niu *np)
+{
+	int i;
+
+	for (i = 0; i < np->num_rx_rings; i++) {
+		struct rx_ring_info *rp = &np->rx_rings[i];
+
+		niu_reset_one_rx_channel(np, rp);
+	}
+}
+
+static void niu_disable_ipp(struct niu *np)
+{
+	u64 rd, wr, val;
+	int limit;
+
+	rd = nr64_ipp(IPP_DFIFO_RD_PTR);
+	wr = nr64_ipp(IPP_DFIFO_WR_PTR);
+	limit = 100;
+	while (--limit >= 0 && (rd != wr)) {
+		rd = nr64_ipp(IPP_DFIFO_RD_PTR);
+		wr = nr64_ipp(IPP_DFIFO_WR_PTR);
+	}
+	if (limit < 0 &&
+	    (rd != 0 && wr != 1)) {
+		netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
+			   (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
+			   (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
+	}
+
+	val = nr64_ipp(IPP_CFIG);
+	val &= ~(IPP_CFIG_IPP_ENABLE |
+		 IPP_CFIG_DFIFO_ECC_EN |
+		 IPP_CFIG_DROP_BAD_CRC |
+		 IPP_CFIG_CKSUM_EN);
+	nw64_ipp(IPP_CFIG, val);
+
+	(void) niu_ipp_reset(np);
+}
+
+static int niu_init_hw(struct niu *np)
+{
+	int i, err;
+
+	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
+	niu_txc_enable_port(np, 1);
+	niu_txc_port_dma_enable(np, 1);
+	niu_txc_set_imask(np, 0);
+
+	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
+	for (i = 0; i < np->num_tx_rings; i++) {
+		struct tx_ring_info *rp = &np->tx_rings[i];
+
+		err = niu_init_one_tx_channel(np, rp);
+		if (err)
+			return err;
+	}
+
+	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
+	err = niu_init_rx_channels(np);
+	if (err)
+		goto out_uninit_tx_channels;
+
+	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
+	err = niu_init_classifier_hw(np);
+	if (err)
+		goto out_uninit_rx_channels;
+
+	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
+	err = niu_init_zcp(np);
+	if (err)
+		goto out_uninit_rx_channels;
+
+	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
+	err = niu_init_ipp(np);
+	if (err)
+		goto out_uninit_rx_channels;
+
+	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
+	err = niu_init_mac(np);
+	if (err)
+		goto out_uninit_ipp;
+
+	return 0;
+
+out_uninit_ipp:
+	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
+	niu_disable_ipp(np);
+
+out_uninit_rx_channels:
+	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
+	niu_stop_rx_channels(np);
+	niu_reset_rx_channels(np);
+
+out_uninit_tx_channels:
+	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
+	niu_stop_tx_channels(np);
+	niu_reset_tx_channels(np);
+
+	return err;
+}
+
+static void niu_stop_hw(struct niu *np)
+{
+	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
+	niu_enable_interrupts(np, 0);
+
+	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
+	niu_enable_rx_mac(np, 0);
+
+	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
+	niu_disable_ipp(np);
+
+	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
+	niu_stop_tx_channels(np);
+
+	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
+	niu_stop_rx_channels(np);
+
+	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
+	niu_reset_tx_channels(np);
+
+	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
+	niu_reset_rx_channels(np);
+}
+
+static void niu_set_irq_name(struct niu *np)
+{
+	int port = np->port;
+	int i, j = 1;
+
+	sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
+
+	if (port == 0) {
+		sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
+		sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
+		j = 3;
+	}
+
+	for (i = 0; i < np->num_ldg - j; i++) {
+		if (i < np->num_rx_rings)
+			sprintf(np->irq_name[i+j], "%s-rx-%d",
+				np->dev->name, i);
+		else if (i < np->num_tx_rings + np->num_rx_rings)
+			sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
+				i - np->num_rx_rings);
+	}
+}
+
+static int niu_request_irq(struct niu *np)
+{
+	int i, j, err;
+
+	niu_set_irq_name(np);
+
+	err = 0;
+	for (i = 0; i < np->num_ldg; i++) {
+		struct niu_ldg *lp = &np->ldg[i];
+
+		err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
+				  np->irq_name[i], lp);
+		if (err)
+			goto out_free_irqs;
+
+	}
+
+	return 0;
+
+out_free_irqs:
+	for (j = 0; j < i; j++) {
+		struct niu_ldg *lp = &np->ldg[j];
+
+		free_irq(lp->irq, lp);
+	}
+	return err;
+}
+
+static void niu_free_irq(struct niu *np)
+{
+	int i;
+
+	for (i = 0; i < np->num_ldg; i++) {
+		struct niu_ldg *lp = &np->ldg[i];
+
+		free_irq(lp->irq, lp);
+	}
+}
+
+static void niu_enable_napi(struct niu *np)
+{
+	int i;
+
+	for (i = 0; i < np->num_ldg; i++)
+		napi_enable(&np->ldg[i].napi);
+}
+
+static void niu_disable_napi(struct niu *np)
+{
+	int i;
+
+	for (i = 0; i < np->num_ldg; i++)
+		napi_disable(&np->ldg[i].napi);
+}
+
+static int niu_open(struct net_device *dev)
+{
+	struct niu *np = netdev_priv(dev);
+	int err;
+
+	netif_carrier_off(dev);
+
+	err = niu_alloc_channels(np);
+	if (err)
+		goto out_err;
+
+	err = niu_enable_interrupts(np, 0);
+	if (err)
+		goto out_free_channels;
+
+	err = niu_request_irq(np);
+	if (err)
+		goto out_free_channels;
+
+	niu_enable_napi(np);
+
+	spin_lock_irq(&np->lock);
+
+	err = niu_init_hw(np);
+	if (!err) {
+		timer_setup(&np->timer, niu_timer, 0);
+		np->timer.expires = jiffies + HZ;
+
+		err = niu_enable_interrupts(np, 1);
+		if (err)
+			niu_stop_hw(np);
+	}
+
+	spin_unlock_irq(&np->lock);
+
+	if (err) {
+		niu_disable_napi(np);
+		goto out_free_irq;
+	}
+
+	netif_tx_start_all_queues(dev);
+
+	if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
+		netif_carrier_on(dev);
+
+	add_timer(&np->timer);
+
+	return 0;
+
+out_free_irq:
+	niu_free_irq(np);
+
+out_free_channels:
+	niu_free_channels(np);
+
+out_err:
+	return err;
+}
+
+static void niu_full_shutdown(struct niu *np, struct net_device *dev)
+{
+	cancel_work_sync(&np->reset_task);
+
+	niu_disable_napi(np);
+	netif_tx_stop_all_queues(dev);
+
+	del_timer_sync(&np->timer);
+
+	spin_lock_irq(&np->lock);
+
+	niu_stop_hw(np);
+
+	spin_unlock_irq(&np->lock);
+}
+
+static int niu_close(struct net_device *dev)
+{
+	struct niu *np = netdev_priv(dev);
+
+	niu_full_shutdown(np, dev);
+
+	niu_free_irq(np);
+
+	niu_free_channels(np);
+
+	niu_handle_led(np, 0);
+
+	return 0;
+}
+
+static void niu_sync_xmac_stats(struct niu *np)
+{
+	struct niu_xmac_stats *mp = &np->mac_stats.xmac;
+
+	mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
+	mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
+
+	mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
+	mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
+	mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
+	mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
+	mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
+	mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
+	mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
+	mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
+	mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
+	mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
+	mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
+	mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
+	mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
+	mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
+	mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
+	mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
+}
+
+static void niu_sync_bmac_stats(struct niu *np)
+{
+	struct niu_bmac_stats *mp = &np->mac_stats.bmac;
+
+	mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
+	mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
+
+	mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
+	mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
+	mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
+	mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
+}
+
+static void niu_sync_mac_stats(struct niu *np)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		niu_sync_xmac_stats(np);
+	else
+		niu_sync_bmac_stats(np);
+}
+
+static void niu_get_rx_stats(struct niu *np,
+			     struct rtnl_link_stats64 *stats)
+{
+	u64 pkts, dropped, errors, bytes;
+	struct rx_ring_info *rx_rings;
+	int i;
+
+	pkts = dropped = errors = bytes = 0;
+
+	rx_rings = READ_ONCE(np->rx_rings);
+	if (!rx_rings)
+		goto no_rings;
+
+	for (i = 0; i < np->num_rx_rings; i++) {
+		struct rx_ring_info *rp = &rx_rings[i];
+
+		niu_sync_rx_discard_stats(np, rp, 0);
+
+		pkts += rp->rx_packets;
+		bytes += rp->rx_bytes;
+		dropped += rp->rx_dropped;
+		errors += rp->rx_errors;
+	}
+
+no_rings:
+	stats->rx_packets = pkts;
+	stats->rx_bytes = bytes;
+	stats->rx_dropped = dropped;
+	stats->rx_errors = errors;
+}
+
+static void niu_get_tx_stats(struct niu *np,
+			     struct rtnl_link_stats64 *stats)
+{
+	u64 pkts, errors, bytes;
+	struct tx_ring_info *tx_rings;
+	int i;
+
+	pkts = errors = bytes = 0;
+
+	tx_rings = READ_ONCE(np->tx_rings);
+	if (!tx_rings)
+		goto no_rings;
+
+	for (i = 0; i < np->num_tx_rings; i++) {
+		struct tx_ring_info *rp = &tx_rings[i];
+
+		pkts += rp->tx_packets;
+		bytes += rp->tx_bytes;
+		errors += rp->tx_errors;
+	}
+
+no_rings:
+	stats->tx_packets = pkts;
+	stats->tx_bytes = bytes;
+	stats->tx_errors = errors;
+}
+
+static void niu_get_stats(struct net_device *dev,
+			  struct rtnl_link_stats64 *stats)
+{
+	struct niu *np = netdev_priv(dev);
+
+	if (netif_running(dev)) {
+		niu_get_rx_stats(np, stats);
+		niu_get_tx_stats(np, stats);
+	}
+}
+
+static void niu_load_hash_xmac(struct niu *np, u16 *hash)
+{
+	int i;
+
+	for (i = 0; i < 16; i++)
+		nw64_mac(XMAC_HASH_TBL(i), hash[i]);
+}
+
+static void niu_load_hash_bmac(struct niu *np, u16 *hash)
+{
+	int i;
+
+	for (i = 0; i < 16; i++)
+		nw64_mac(BMAC_HASH_TBL(i), hash[i]);
+}
+
+static void niu_load_hash(struct niu *np, u16 *hash)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		niu_load_hash_xmac(np, hash);
+	else
+		niu_load_hash_bmac(np, hash);
+}
+
+static void niu_set_rx_mode(struct net_device *dev)
+{
+	struct niu *np = netdev_priv(dev);
+	int i, alt_cnt, err;
+	struct netdev_hw_addr *ha;
+	unsigned long flags;
+	u16 hash[16] = { 0, };
+
+	spin_lock_irqsave(&np->lock, flags);
+	niu_enable_rx_mac(np, 0);
+
+	np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
+	if (dev->flags & IFF_PROMISC)
+		np->flags |= NIU_FLAGS_PROMISC;
+	if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
+		np->flags |= NIU_FLAGS_MCAST;
+
+	alt_cnt = netdev_uc_count(dev);
+	if (alt_cnt > niu_num_alt_addr(np)) {
+		alt_cnt = 0;
+		np->flags |= NIU_FLAGS_PROMISC;
+	}
+
+	if (alt_cnt) {
+		int index = 0;
+
+		netdev_for_each_uc_addr(ha, dev) {
+			err = niu_set_alt_mac(np, index, ha->addr);
+			if (err)
+				netdev_warn(dev, "Error %d adding alt mac %d\n",
+					    err, index);
+			err = niu_enable_alt_mac(np, index, 1);
+			if (err)
+				netdev_warn(dev, "Error %d enabling alt mac %d\n",
+					    err, index);
+
+			index++;
+		}
+	} else {
+		int alt_start;
+		if (np->flags & NIU_FLAGS_XMAC)
+			alt_start = 0;
+		else
+			alt_start = 1;
+		for (i = alt_start; i < niu_num_alt_addr(np); i++) {
+			err = niu_enable_alt_mac(np, i, 0);
+			if (err)
+				netdev_warn(dev, "Error %d disabling alt mac %d\n",
+					    err, i);
+		}
+	}
+	if (dev->flags & IFF_ALLMULTI) {
+		for (i = 0; i < 16; i++)
+			hash[i] = 0xffff;
+	} else if (!netdev_mc_empty(dev)) {
+		netdev_for_each_mc_addr(ha, dev) {
+			u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
+
+			crc >>= 24;
+			hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
+		}
+	}
+
+	if (np->flags & NIU_FLAGS_MCAST)
+		niu_load_hash(np, hash);
+
+	niu_enable_rx_mac(np, 1);
+	spin_unlock_irqrestore(&np->lock, flags);
+}
+
+static int niu_set_mac_addr(struct net_device *dev, void *p)
+{
+	struct niu *np = netdev_priv(dev);
+	struct sockaddr *addr = p;
+	unsigned long flags;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+
+	if (!netif_running(dev))
+		return 0;
+
+	spin_lock_irqsave(&np->lock, flags);
+	niu_enable_rx_mac(np, 0);
+	niu_set_primary_mac(np, dev->dev_addr);
+	niu_enable_rx_mac(np, 1);
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	return 0;
+}
+
+static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+	return -EOPNOTSUPP;
+}
+
+static void niu_netif_stop(struct niu *np)
+{
+	netif_trans_update(np->dev);	/* prevent tx timeout */
+
+	niu_disable_napi(np);
+
+	netif_tx_disable(np->dev);
+}
+
+static void niu_netif_start(struct niu *np)
+{
+	/* NOTE: unconditional netif_wake_queue is only appropriate
+	 * so long as all callers are assured to have free tx slots
+	 * (such as after niu_init_hw).
+	 */
+	netif_tx_wake_all_queues(np->dev);
+
+	niu_enable_napi(np);
+
+	niu_enable_interrupts(np, 1);
+}
+
+static void niu_reset_buffers(struct niu *np)
+{
+	int i, j, k, err;
+
+	if (np->rx_rings) {
+		for (i = 0; i < np->num_rx_rings; i++) {
+			struct rx_ring_info *rp = &np->rx_rings[i];
+
+			for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
+				struct page *page;
+
+				page = rp->rxhash[j];
+				while (page) {
+					struct page *next =
+						(struct page *) page->mapping;
+					u64 base = page->index;
+					base = base >> RBR_DESCR_ADDR_SHIFT;
+					rp->rbr[k++] = cpu_to_le32(base);
+					page = next;
+				}
+			}
+			for (; k < MAX_RBR_RING_SIZE; k++) {
+				err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
+				if (unlikely(err))
+					break;
+			}
+
+			rp->rbr_index = rp->rbr_table_size - 1;
+			rp->rcr_index = 0;
+			rp->rbr_pending = 0;
+			rp->rbr_refill_pending = 0;
+		}
+	}
+	if (np->tx_rings) {
+		for (i = 0; i < np->num_tx_rings; i++) {
+			struct tx_ring_info *rp = &np->tx_rings[i];
+
+			for (j = 0; j < MAX_TX_RING_SIZE; j++) {
+				if (rp->tx_buffs[j].skb)
+					(void) release_tx_packet(np, rp, j);
+			}
+
+			rp->pending = MAX_TX_RING_SIZE;
+			rp->prod = 0;
+			rp->cons = 0;
+			rp->wrap_bit = 0;
+		}
+	}
+}
+
+static void niu_reset_task(struct work_struct *work)
+{
+	struct niu *np = container_of(work, struct niu, reset_task);
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&np->lock, flags);
+	if (!netif_running(np->dev)) {
+		spin_unlock_irqrestore(&np->lock, flags);
+		return;
+	}
+
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	del_timer_sync(&np->timer);
+
+	niu_netif_stop(np);
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	niu_stop_hw(np);
+
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	niu_reset_buffers(np);
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	err = niu_init_hw(np);
+	if (!err) {
+		np->timer.expires = jiffies + HZ;
+		add_timer(&np->timer);
+		niu_netif_start(np);
+	}
+
+	spin_unlock_irqrestore(&np->lock, flags);
+}
+
+static void niu_tx_timeout(struct net_device *dev)
+{
+	struct niu *np = netdev_priv(dev);
+
+	dev_err(np->device, "%s: Transmit timed out, resetting\n",
+		dev->name);
+
+	schedule_work(&np->reset_task);
+}
+
+static void niu_set_txd(struct tx_ring_info *rp, int index,
+			u64 mapping, u64 len, u64 mark,
+			u64 n_frags)
+{
+	__le64 *desc = &rp->descr[index];
+
+	*desc = cpu_to_le64(mark |
+			    (n_frags << TX_DESC_NUM_PTR_SHIFT) |
+			    (len << TX_DESC_TR_LEN_SHIFT) |
+			    (mapping & TX_DESC_SAD));
+}
+
+static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
+				u64 pad_bytes, u64 len)
+{
+	u16 eth_proto, eth_proto_inner;
+	u64 csum_bits, l3off, ihl, ret;
+	u8 ip_proto;
+	int ipv6;
+
+	eth_proto = be16_to_cpu(ehdr->h_proto);
+	eth_proto_inner = eth_proto;
+	if (eth_proto == ETH_P_8021Q) {
+		struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
+		__be16 val = vp->h_vlan_encapsulated_proto;
+
+		eth_proto_inner = be16_to_cpu(val);
+	}
+
+	ipv6 = ihl = 0;
+	switch (skb->protocol) {
+	case cpu_to_be16(ETH_P_IP):
+		ip_proto = ip_hdr(skb)->protocol;
+		ihl = ip_hdr(skb)->ihl;
+		break;
+	case cpu_to_be16(ETH_P_IPV6):
+		ip_proto = ipv6_hdr(skb)->nexthdr;
+		ihl = (40 >> 2);
+		ipv6 = 1;
+		break;
+	default:
+		ip_proto = ihl = 0;
+		break;
+	}
+
+	csum_bits = TXHDR_CSUM_NONE;
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		u64 start, stuff;
+
+		csum_bits = (ip_proto == IPPROTO_TCP ?
+			     TXHDR_CSUM_TCP :
+			     (ip_proto == IPPROTO_UDP ?
+			      TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
+
+		start = skb_checksum_start_offset(skb) -
+			(pad_bytes + sizeof(struct tx_pkt_hdr));
+		stuff = start + skb->csum_offset;
+
+		csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
+		csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
+	}
+
+	l3off = skb_network_offset(skb) -
+		(pad_bytes + sizeof(struct tx_pkt_hdr));
+
+	ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
+	       (len << TXHDR_LEN_SHIFT) |
+	       ((l3off / 2) << TXHDR_L3START_SHIFT) |
+	       (ihl << TXHDR_IHL_SHIFT) |
+	       ((eth_proto_inner < ETH_P_802_3_MIN) ? TXHDR_LLC : 0) |
+	       ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
+	       (ipv6 ? TXHDR_IP_VER : 0) |
+	       csum_bits);
+
+	return ret;
+}
+
+static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
+				  struct net_device *dev)
+{
+	struct niu *np = netdev_priv(dev);
+	unsigned long align, headroom;
+	struct netdev_queue *txq;
+	struct tx_ring_info *rp;
+	struct tx_pkt_hdr *tp;
+	unsigned int len, nfg;
+	struct ethhdr *ehdr;
+	int prod, i, tlen;
+	u64 mapping, mrk;
+
+	i = skb_get_queue_mapping(skb);
+	rp = &np->tx_rings[i];
+	txq = netdev_get_tx_queue(dev, i);
+
+	if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
+		netif_tx_stop_queue(txq);
+		dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
+		rp->tx_errors++;
+		return NETDEV_TX_BUSY;
+	}
+
+	if (eth_skb_pad(skb))
+		goto out;
+
+	len = sizeof(struct tx_pkt_hdr) + 15;
+	if (skb_headroom(skb) < len) {
+		struct sk_buff *skb_new;
+
+		skb_new = skb_realloc_headroom(skb, len);
+		if (!skb_new)
+			goto out_drop;
+		kfree_skb(skb);
+		skb = skb_new;
+	} else
+		skb_orphan(skb);
+
+	align = ((unsigned long) skb->data & (16 - 1));
+	headroom = align + sizeof(struct tx_pkt_hdr);
+
+	ehdr = (struct ethhdr *) skb->data;
+	tp = skb_push(skb, headroom);
+
+	len = skb->len - sizeof(struct tx_pkt_hdr);
+	tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
+	tp->resv = 0;
+
+	len = skb_headlen(skb);
+	mapping = np->ops->map_single(np->device, skb->data,
+				      len, DMA_TO_DEVICE);
+
+	prod = rp->prod;
+
+	rp->tx_buffs[prod].skb = skb;
+	rp->tx_buffs[prod].mapping = mapping;
+
+	mrk = TX_DESC_SOP;
+	if (++rp->mark_counter == rp->mark_freq) {
+		rp->mark_counter = 0;
+		mrk |= TX_DESC_MARK;
+		rp->mark_pending++;
+	}
+
+	tlen = len;
+	nfg = skb_shinfo(skb)->nr_frags;
+	while (tlen > 0) {
+		tlen -= MAX_TX_DESC_LEN;
+		nfg++;
+	}
+
+	while (len > 0) {
+		unsigned int this_len = len;
+
+		if (this_len > MAX_TX_DESC_LEN)
+			this_len = MAX_TX_DESC_LEN;
+
+		niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
+		mrk = nfg = 0;
+
+		prod = NEXT_TX(rp, prod);
+		mapping += this_len;
+		len -= this_len;
+	}
+
+	for (i = 0; i <  skb_shinfo(skb)->nr_frags; i++) {
+		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+		len = skb_frag_size(frag);
+		mapping = np->ops->map_page(np->device, skb_frag_page(frag),
+					    frag->page_offset, len,
+					    DMA_TO_DEVICE);
+
+		rp->tx_buffs[prod].skb = NULL;
+		rp->tx_buffs[prod].mapping = mapping;
+
+		niu_set_txd(rp, prod, mapping, len, 0, 0);
+
+		prod = NEXT_TX(rp, prod);
+	}
+
+	if (prod < rp->prod)
+		rp->wrap_bit ^= TX_RING_KICK_WRAP;
+	rp->prod = prod;
+
+	nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
+
+	if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
+		netif_tx_stop_queue(txq);
+		if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
+			netif_tx_wake_queue(txq);
+	}
+
+out:
+	return NETDEV_TX_OK;
+
+out_drop:
+	rp->tx_errors++;
+	kfree_skb(skb);
+	goto out;
+}
+
+static int niu_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct niu *np = netdev_priv(dev);
+	int err, orig_jumbo, new_jumbo;
+
+	orig_jumbo = (dev->mtu > ETH_DATA_LEN);
+	new_jumbo = (new_mtu > ETH_DATA_LEN);
+
+	dev->mtu = new_mtu;
+
+	if (!netif_running(dev) ||
+	    (orig_jumbo == new_jumbo))
+		return 0;
+
+	niu_full_shutdown(np, dev);
+
+	niu_free_channels(np);
+
+	niu_enable_napi(np);
+
+	err = niu_alloc_channels(np);
+	if (err)
+		return err;
+
+	spin_lock_irq(&np->lock);
+
+	err = niu_init_hw(np);
+	if (!err) {
+		timer_setup(&np->timer, niu_timer, 0);
+		np->timer.expires = jiffies + HZ;
+
+		err = niu_enable_interrupts(np, 1);
+		if (err)
+			niu_stop_hw(np);
+	}
+
+	spin_unlock_irq(&np->lock);
+
+	if (!err) {
+		netif_tx_start_all_queues(dev);
+		if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
+			netif_carrier_on(dev);
+
+		add_timer(&np->timer);
+	}
+
+	return err;
+}
+
+static void niu_get_drvinfo(struct net_device *dev,
+			    struct ethtool_drvinfo *info)
+{
+	struct niu *np = netdev_priv(dev);
+	struct niu_vpd *vpd = &np->vpd;
+
+	strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
+	strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
+	snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d",
+		vpd->fcode_major, vpd->fcode_minor);
+	if (np->parent->plat_type != PLAT_TYPE_NIU)
+		strlcpy(info->bus_info, pci_name(np->pdev),
+			sizeof(info->bus_info));
+}
+
+static int niu_get_link_ksettings(struct net_device *dev,
+				  struct ethtool_link_ksettings *cmd)
+{
+	struct niu *np = netdev_priv(dev);
+	struct niu_link_config *lp;
+
+	lp = &np->link_config;
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->base.phy_address = np->phy_addr;
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
+						lp->supported);
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
+						lp->active_advertising);
+	cmd->base.autoneg = lp->active_autoneg;
+	cmd->base.speed = lp->active_speed;
+	cmd->base.duplex = lp->active_duplex;
+	cmd->base.port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
+
+	return 0;
+}
+
+static int niu_set_link_ksettings(struct net_device *dev,
+				  const struct ethtool_link_ksettings *cmd)
+{
+	struct niu *np = netdev_priv(dev);
+	struct niu_link_config *lp = &np->link_config;
+
+	ethtool_convert_link_mode_to_legacy_u32(&lp->advertising,
+						cmd->link_modes.advertising);
+	lp->speed = cmd->base.speed;
+	lp->duplex = cmd->base.duplex;
+	lp->autoneg = cmd->base.autoneg;
+	return niu_init_link(np);
+}
+
+static u32 niu_get_msglevel(struct net_device *dev)
+{
+	struct niu *np = netdev_priv(dev);
+	return np->msg_enable;
+}
+
+static void niu_set_msglevel(struct net_device *dev, u32 value)
+{
+	struct niu *np = netdev_priv(dev);
+	np->msg_enable = value;
+}
+
+static int niu_nway_reset(struct net_device *dev)
+{
+	struct niu *np = netdev_priv(dev);
+
+	if (np->link_config.autoneg)
+		return niu_init_link(np);
+
+	return 0;
+}
+
+static int niu_get_eeprom_len(struct net_device *dev)
+{
+	struct niu *np = netdev_priv(dev);
+
+	return np->eeprom_len;
+}
+
+static int niu_get_eeprom(struct net_device *dev,
+			  struct ethtool_eeprom *eeprom, u8 *data)
+{
+	struct niu *np = netdev_priv(dev);
+	u32 offset, len, val;
+
+	offset = eeprom->offset;
+	len = eeprom->len;
+
+	if (offset + len < offset)
+		return -EINVAL;
+	if (offset >= np->eeprom_len)
+		return -EINVAL;
+	if (offset + len > np->eeprom_len)
+		len = eeprom->len = np->eeprom_len - offset;
+
+	if (offset & 3) {
+		u32 b_offset, b_count;
+
+		b_offset = offset & 3;
+		b_count = 4 - b_offset;
+		if (b_count > len)
+			b_count = len;
+
+		val = nr64(ESPC_NCR((offset - b_offset) / 4));
+		memcpy(data, ((char *)&val) + b_offset, b_count);
+		data += b_count;
+		len -= b_count;
+		offset += b_count;
+	}
+	while (len >= 4) {
+		val = nr64(ESPC_NCR(offset / 4));
+		memcpy(data, &val, 4);
+		data += 4;
+		len -= 4;
+		offset += 4;
+	}
+	if (len) {
+		val = nr64(ESPC_NCR(offset / 4));
+		memcpy(data, &val, len);
+	}
+	return 0;
+}
+
+static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
+{
+	switch (flow_type) {
+	case TCP_V4_FLOW:
+	case TCP_V6_FLOW:
+		*pid = IPPROTO_TCP;
+		break;
+	case UDP_V4_FLOW:
+	case UDP_V6_FLOW:
+		*pid = IPPROTO_UDP;
+		break;
+	case SCTP_V4_FLOW:
+	case SCTP_V6_FLOW:
+		*pid = IPPROTO_SCTP;
+		break;
+	case AH_V4_FLOW:
+	case AH_V6_FLOW:
+		*pid = IPPROTO_AH;
+		break;
+	case ESP_V4_FLOW:
+	case ESP_V6_FLOW:
+		*pid = IPPROTO_ESP;
+		break;
+	default:
+		*pid = 0;
+		break;
+	}
+}
+
+static int niu_class_to_ethflow(u64 class, int *flow_type)
+{
+	switch (class) {
+	case CLASS_CODE_TCP_IPV4:
+		*flow_type = TCP_V4_FLOW;
+		break;
+	case CLASS_CODE_UDP_IPV4:
+		*flow_type = UDP_V4_FLOW;
+		break;
+	case CLASS_CODE_AH_ESP_IPV4:
+		*flow_type = AH_V4_FLOW;
+		break;
+	case CLASS_CODE_SCTP_IPV4:
+		*flow_type = SCTP_V4_FLOW;
+		break;
+	case CLASS_CODE_TCP_IPV6:
+		*flow_type = TCP_V6_FLOW;
+		break;
+	case CLASS_CODE_UDP_IPV6:
+		*flow_type = UDP_V6_FLOW;
+		break;
+	case CLASS_CODE_AH_ESP_IPV6:
+		*flow_type = AH_V6_FLOW;
+		break;
+	case CLASS_CODE_SCTP_IPV6:
+		*flow_type = SCTP_V6_FLOW;
+		break;
+	case CLASS_CODE_USER_PROG1:
+	case CLASS_CODE_USER_PROG2:
+	case CLASS_CODE_USER_PROG3:
+	case CLASS_CODE_USER_PROG4:
+		*flow_type = IP_USER_FLOW;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int niu_ethflow_to_class(int flow_type, u64 *class)
+{
+	switch (flow_type) {
+	case TCP_V4_FLOW:
+		*class = CLASS_CODE_TCP_IPV4;
+		break;
+	case UDP_V4_FLOW:
+		*class = CLASS_CODE_UDP_IPV4;
+		break;
+	case AH_ESP_V4_FLOW:
+	case AH_V4_FLOW:
+	case ESP_V4_FLOW:
+		*class = CLASS_CODE_AH_ESP_IPV4;
+		break;
+	case SCTP_V4_FLOW:
+		*class = CLASS_CODE_SCTP_IPV4;
+		break;
+	case TCP_V6_FLOW:
+		*class = CLASS_CODE_TCP_IPV6;
+		break;
+	case UDP_V6_FLOW:
+		*class = CLASS_CODE_UDP_IPV6;
+		break;
+	case AH_ESP_V6_FLOW:
+	case AH_V6_FLOW:
+	case ESP_V6_FLOW:
+		*class = CLASS_CODE_AH_ESP_IPV6;
+		break;
+	case SCTP_V6_FLOW:
+		*class = CLASS_CODE_SCTP_IPV6;
+		break;
+	default:
+		return 0;
+	}
+
+	return 1;
+}
+
+static u64 niu_flowkey_to_ethflow(u64 flow_key)
+{
+	u64 ethflow = 0;
+
+	if (flow_key & FLOW_KEY_L2DA)
+		ethflow |= RXH_L2DA;
+	if (flow_key & FLOW_KEY_VLAN)
+		ethflow |= RXH_VLAN;
+	if (flow_key & FLOW_KEY_IPSA)
+		ethflow |= RXH_IP_SRC;
+	if (flow_key & FLOW_KEY_IPDA)
+		ethflow |= RXH_IP_DST;
+	if (flow_key & FLOW_KEY_PROTO)
+		ethflow |= RXH_L3_PROTO;
+	if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
+		ethflow |= RXH_L4_B_0_1;
+	if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
+		ethflow |= RXH_L4_B_2_3;
+
+	return ethflow;
+
+}
+
+static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
+{
+	u64 key = 0;
+
+	if (ethflow & RXH_L2DA)
+		key |= FLOW_KEY_L2DA;
+	if (ethflow & RXH_VLAN)
+		key |= FLOW_KEY_VLAN;
+	if (ethflow & RXH_IP_SRC)
+		key |= FLOW_KEY_IPSA;
+	if (ethflow & RXH_IP_DST)
+		key |= FLOW_KEY_IPDA;
+	if (ethflow & RXH_L3_PROTO)
+		key |= FLOW_KEY_PROTO;
+	if (ethflow & RXH_L4_B_0_1)
+		key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
+	if (ethflow & RXH_L4_B_2_3)
+		key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
+
+	*flow_key = key;
+
+	return 1;
+
+}
+
+static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
+{
+	u64 class;
+
+	nfc->data = 0;
+
+	if (!niu_ethflow_to_class(nfc->flow_type, &class))
+		return -EINVAL;
+
+	if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
+	    TCAM_KEY_DISC)
+		nfc->data = RXH_DISCARD;
+	else
+		nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
+						      CLASS_CODE_USER_PROG1]);
+	return 0;
+}
+
+static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
+					struct ethtool_rx_flow_spec *fsp)
+{
+	u32 tmp;
+	u16 prt;
+
+	tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
+	fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
+
+	tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
+	fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
+
+	tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
+	fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
+
+	tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
+	fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
+
+	fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
+		TCAM_V4KEY2_TOS_SHIFT;
+	fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
+		TCAM_V4KEY2_TOS_SHIFT;
+
+	switch (fsp->flow_type) {
+	case TCP_V4_FLOW:
+	case UDP_V4_FLOW:
+	case SCTP_V4_FLOW:
+		prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
+			TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
+		fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
+
+		prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
+			TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
+		fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
+
+		prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
+			TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
+		fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
+
+		prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
+			 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
+		fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
+		break;
+	case AH_V4_FLOW:
+	case ESP_V4_FLOW:
+		tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
+			TCAM_V4KEY2_PORT_SPI_SHIFT;
+		fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
+
+		tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
+			TCAM_V4KEY2_PORT_SPI_SHIFT;
+		fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
+		break;
+	case IP_USER_FLOW:
+		tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
+			TCAM_V4KEY2_PORT_SPI_SHIFT;
+		fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
+
+		tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
+			TCAM_V4KEY2_PORT_SPI_SHIFT;
+		fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
+
+		fsp->h_u.usr_ip4_spec.proto =
+			(tp->key[2] & TCAM_V4KEY2_PROTO) >>
+			TCAM_V4KEY2_PROTO_SHIFT;
+		fsp->m_u.usr_ip4_spec.proto =
+			(tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
+			TCAM_V4KEY2_PROTO_SHIFT;
+
+		fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
+		break;
+	default:
+		break;
+	}
+}
+
+static int niu_get_ethtool_tcam_entry(struct niu *np,
+				      struct ethtool_rxnfc *nfc)
+{
+	struct niu_parent *parent = np->parent;
+	struct niu_tcam_entry *tp;
+	struct ethtool_rx_flow_spec *fsp = &nfc->fs;
+	u16 idx;
+	u64 class;
+	int ret = 0;
+
+	idx = tcam_get_index(np, (u16)nfc->fs.location);
+
+	tp = &parent->tcam[idx];
+	if (!tp->valid) {
+		netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
+			    parent->index, (u16)nfc->fs.location, idx);
+		return -EINVAL;
+	}
+
+	/* fill the flow spec entry */
+	class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
+		TCAM_V4KEY0_CLASS_CODE_SHIFT;
+	ret = niu_class_to_ethflow(class, &fsp->flow_type);
+	if (ret < 0) {
+		netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
+			    parent->index);
+		goto out;
+	}
+
+	if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
+		u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
+			TCAM_V4KEY2_PROTO_SHIFT;
+		if (proto == IPPROTO_ESP) {
+			if (fsp->flow_type == AH_V4_FLOW)
+				fsp->flow_type = ESP_V4_FLOW;
+			else
+				fsp->flow_type = ESP_V6_FLOW;
+		}
+	}
+
+	switch (fsp->flow_type) {
+	case TCP_V4_FLOW:
+	case UDP_V4_FLOW:
+	case SCTP_V4_FLOW:
+	case AH_V4_FLOW:
+	case ESP_V4_FLOW:
+		niu_get_ip4fs_from_tcam_key(tp, fsp);
+		break;
+	case TCP_V6_FLOW:
+	case UDP_V6_FLOW:
+	case SCTP_V6_FLOW:
+	case AH_V6_FLOW:
+	case ESP_V6_FLOW:
+		/* Not yet implemented */
+		ret = -EINVAL;
+		break;
+	case IP_USER_FLOW:
+		niu_get_ip4fs_from_tcam_key(tp, fsp);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	if (ret < 0)
+		goto out;
+
+	if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
+		fsp->ring_cookie = RX_CLS_FLOW_DISC;
+	else
+		fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
+			TCAM_ASSOCDATA_OFFSET_SHIFT;
+
+	/* put the tcam size here */
+	nfc->data = tcam_get_size(np);
+out:
+	return ret;
+}
+
+static int niu_get_ethtool_tcam_all(struct niu *np,
+				    struct ethtool_rxnfc *nfc,
+				    u32 *rule_locs)
+{
+	struct niu_parent *parent = np->parent;
+	struct niu_tcam_entry *tp;
+	int i, idx, cnt;
+	unsigned long flags;
+	int ret = 0;
+
+	/* put the tcam size here */
+	nfc->data = tcam_get_size(np);
+
+	niu_lock_parent(np, flags);
+	for (cnt = 0, i = 0; i < nfc->data; i++) {
+		idx = tcam_get_index(np, i);
+		tp = &parent->tcam[idx];
+		if (!tp->valid)
+			continue;
+		if (cnt == nfc->rule_cnt) {
+			ret = -EMSGSIZE;
+			break;
+		}
+		rule_locs[cnt] = i;
+		cnt++;
+	}
+	niu_unlock_parent(np, flags);
+
+	nfc->rule_cnt = cnt;
+
+	return ret;
+}
+
+static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
+		       u32 *rule_locs)
+{
+	struct niu *np = netdev_priv(dev);
+	int ret = 0;
+
+	switch (cmd->cmd) {
+	case ETHTOOL_GRXFH:
+		ret = niu_get_hash_opts(np, cmd);
+		break;
+	case ETHTOOL_GRXRINGS:
+		cmd->data = np->num_rx_rings;
+		break;
+	case ETHTOOL_GRXCLSRLCNT:
+		cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
+		break;
+	case ETHTOOL_GRXCLSRULE:
+		ret = niu_get_ethtool_tcam_entry(np, cmd);
+		break;
+	case ETHTOOL_GRXCLSRLALL:
+		ret = niu_get_ethtool_tcam_all(np, cmd, rule_locs);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
+{
+	u64 class;
+	u64 flow_key = 0;
+	unsigned long flags;
+
+	if (!niu_ethflow_to_class(nfc->flow_type, &class))
+		return -EINVAL;
+
+	if (class < CLASS_CODE_USER_PROG1 ||
+	    class > CLASS_CODE_SCTP_IPV6)
+		return -EINVAL;
+
+	if (nfc->data & RXH_DISCARD) {
+		niu_lock_parent(np, flags);
+		flow_key = np->parent->tcam_key[class -
+					       CLASS_CODE_USER_PROG1];
+		flow_key |= TCAM_KEY_DISC;
+		nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
+		np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
+		niu_unlock_parent(np, flags);
+		return 0;
+	} else {
+		/* Discard was set before, but is not set now */
+		if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
+		    TCAM_KEY_DISC) {
+			niu_lock_parent(np, flags);
+			flow_key = np->parent->tcam_key[class -
+					       CLASS_CODE_USER_PROG1];
+			flow_key &= ~TCAM_KEY_DISC;
+			nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
+			     flow_key);
+			np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
+				flow_key;
+			niu_unlock_parent(np, flags);
+		}
+	}
+
+	if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
+		return -EINVAL;
+
+	niu_lock_parent(np, flags);
+	nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
+	np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
+	niu_unlock_parent(np, flags);
+
+	return 0;
+}
+
+static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
+				       struct niu_tcam_entry *tp,
+				       int l2_rdc_tab, u64 class)
+{
+	u8 pid = 0;
+	u32 sip, dip, sipm, dipm, spi, spim;
+	u16 sport, dport, spm, dpm;
+
+	sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
+	sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
+	dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
+	dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
+
+	tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
+	tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
+	tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
+	tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
+
+	tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
+	tp->key[3] |= dip;
+
+	tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
+	tp->key_mask[3] |= dipm;
+
+	tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
+		       TCAM_V4KEY2_TOS_SHIFT);
+	tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
+			    TCAM_V4KEY2_TOS_SHIFT);
+	switch (fsp->flow_type) {
+	case TCP_V4_FLOW:
+	case UDP_V4_FLOW:
+	case SCTP_V4_FLOW:
+		sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
+		spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
+		dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
+		dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
+
+		tp->key[2] |= (((u64)sport << 16) | dport);
+		tp->key_mask[2] |= (((u64)spm << 16) | dpm);
+		niu_ethflow_to_l3proto(fsp->flow_type, &pid);
+		break;
+	case AH_V4_FLOW:
+	case ESP_V4_FLOW:
+		spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
+		spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
+
+		tp->key[2] |= spi;
+		tp->key_mask[2] |= spim;
+		niu_ethflow_to_l3proto(fsp->flow_type, &pid);
+		break;
+	case IP_USER_FLOW:
+		spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
+		spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
+
+		tp->key[2] |= spi;
+		tp->key_mask[2] |= spim;
+		pid = fsp->h_u.usr_ip4_spec.proto;
+		break;
+	default:
+		break;
+	}
+
+	tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
+	if (pid) {
+		tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
+	}
+}
+
+static int niu_add_ethtool_tcam_entry(struct niu *np,
+				      struct ethtool_rxnfc *nfc)
+{
+	struct niu_parent *parent = np->parent;
+	struct niu_tcam_entry *tp;
+	struct ethtool_rx_flow_spec *fsp = &nfc->fs;
+	struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
+	int l2_rdc_table = rdc_table->first_table_num;
+	u16 idx;
+	u64 class;
+	unsigned long flags;
+	int err, ret;
+
+	ret = 0;
+
+	idx = nfc->fs.location;
+	if (idx >= tcam_get_size(np))
+		return -EINVAL;
+
+	if (fsp->flow_type == IP_USER_FLOW) {
+		int i;
+		int add_usr_cls = 0;
+		struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
+		struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
+
+		if (uspec->ip_ver != ETH_RX_NFC_IP4)
+			return -EINVAL;
+
+		niu_lock_parent(np, flags);
+
+		for (i = 0; i < NIU_L3_PROG_CLS; i++) {
+			if (parent->l3_cls[i]) {
+				if (uspec->proto == parent->l3_cls_pid[i]) {
+					class = parent->l3_cls[i];
+					parent->l3_cls_refcnt[i]++;
+					add_usr_cls = 1;
+					break;
+				}
+			} else {
+				/* Program new user IP class */
+				switch (i) {
+				case 0:
+					class = CLASS_CODE_USER_PROG1;
+					break;
+				case 1:
+					class = CLASS_CODE_USER_PROG2;
+					break;
+				case 2:
+					class = CLASS_CODE_USER_PROG3;
+					break;
+				case 3:
+					class = CLASS_CODE_USER_PROG4;
+					break;
+				default:
+					break;
+				}
+				ret = tcam_user_ip_class_set(np, class, 0,
+							     uspec->proto,
+							     uspec->tos,
+							     umask->tos);
+				if (ret)
+					goto out;
+
+				ret = tcam_user_ip_class_enable(np, class, 1);
+				if (ret)
+					goto out;
+				parent->l3_cls[i] = class;
+				parent->l3_cls_pid[i] = uspec->proto;
+				parent->l3_cls_refcnt[i]++;
+				add_usr_cls = 1;
+				break;
+			}
+		}
+		if (!add_usr_cls) {
+			netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
+				    parent->index, __func__, uspec->proto);
+			ret = -EINVAL;
+			goto out;
+		}
+		niu_unlock_parent(np, flags);
+	} else {
+		if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
+			return -EINVAL;
+		}
+	}
+
+	niu_lock_parent(np, flags);
+
+	idx = tcam_get_index(np, idx);
+	tp = &parent->tcam[idx];
+
+	memset(tp, 0, sizeof(*tp));
+
+	/* fill in the tcam key and mask */
+	switch (fsp->flow_type) {
+	case TCP_V4_FLOW:
+	case UDP_V4_FLOW:
+	case SCTP_V4_FLOW:
+	case AH_V4_FLOW:
+	case ESP_V4_FLOW:
+		niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
+		break;
+	case TCP_V6_FLOW:
+	case UDP_V6_FLOW:
+	case SCTP_V6_FLOW:
+	case AH_V6_FLOW:
+	case ESP_V6_FLOW:
+		/* Not yet implemented */
+		netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
+			    parent->index, __func__, fsp->flow_type);
+		ret = -EINVAL;
+		goto out;
+	case IP_USER_FLOW:
+		niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
+		break;
+	default:
+		netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
+			    parent->index, __func__, fsp->flow_type);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	/* fill in the assoc data */
+	if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
+		tp->assoc_data = TCAM_ASSOCDATA_DISC;
+	} else {
+		if (fsp->ring_cookie >= np->num_rx_rings) {
+			netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
+				    parent->index, __func__,
+				    (long long)fsp->ring_cookie);
+			ret = -EINVAL;
+			goto out;
+		}
+		tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
+				  (fsp->ring_cookie <<
+				   TCAM_ASSOCDATA_OFFSET_SHIFT));
+	}
+
+	err = tcam_write(np, idx, tp->key, tp->key_mask);
+	if (err) {
+		ret = -EINVAL;
+		goto out;
+	}
+	err = tcam_assoc_write(np, idx, tp->assoc_data);
+	if (err) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	/* validate the entry */
+	tp->valid = 1;
+	np->clas.tcam_valid_entries++;
+out:
+	niu_unlock_parent(np, flags);
+
+	return ret;
+}
+
+static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
+{
+	struct niu_parent *parent = np->parent;
+	struct niu_tcam_entry *tp;
+	u16 idx;
+	unsigned long flags;
+	u64 class;
+	int ret = 0;
+
+	if (loc >= tcam_get_size(np))
+		return -EINVAL;
+
+	niu_lock_parent(np, flags);
+
+	idx = tcam_get_index(np, loc);
+	tp = &parent->tcam[idx];
+
+	/* if the entry is of a user defined class, then update*/
+	class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
+		TCAM_V4KEY0_CLASS_CODE_SHIFT;
+
+	if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
+		int i;
+		for (i = 0; i < NIU_L3_PROG_CLS; i++) {
+			if (parent->l3_cls[i] == class) {
+				parent->l3_cls_refcnt[i]--;
+				if (!parent->l3_cls_refcnt[i]) {
+					/* disable class */
+					ret = tcam_user_ip_class_enable(np,
+									class,
+									0);
+					if (ret)
+						goto out;
+					parent->l3_cls[i] = 0;
+					parent->l3_cls_pid[i] = 0;
+				}
+				break;
+			}
+		}
+		if (i == NIU_L3_PROG_CLS) {
+			netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
+				    parent->index, __func__,
+				    (unsigned long long)class);
+			ret = -EINVAL;
+			goto out;
+		}
+	}
+
+	ret = tcam_flush(np, idx);
+	if (ret)
+		goto out;
+
+	/* invalidate the entry */
+	tp->valid = 0;
+	np->clas.tcam_valid_entries--;
+out:
+	niu_unlock_parent(np, flags);
+
+	return ret;
+}
+
+static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
+{
+	struct niu *np = netdev_priv(dev);
+	int ret = 0;
+
+	switch (cmd->cmd) {
+	case ETHTOOL_SRXFH:
+		ret = niu_set_hash_opts(np, cmd);
+		break;
+	case ETHTOOL_SRXCLSRLINS:
+		ret = niu_add_ethtool_tcam_entry(np, cmd);
+		break;
+	case ETHTOOL_SRXCLSRLDEL:
+		ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static const struct {
+	const char string[ETH_GSTRING_LEN];
+} niu_xmac_stat_keys[] = {
+	{ "tx_frames" },
+	{ "tx_bytes" },
+	{ "tx_fifo_errors" },
+	{ "tx_overflow_errors" },
+	{ "tx_max_pkt_size_errors" },
+	{ "tx_underflow_errors" },
+	{ "rx_local_faults" },
+	{ "rx_remote_faults" },
+	{ "rx_link_faults" },
+	{ "rx_align_errors" },
+	{ "rx_frags" },
+	{ "rx_mcasts" },
+	{ "rx_bcasts" },
+	{ "rx_hist_cnt1" },
+	{ "rx_hist_cnt2" },
+	{ "rx_hist_cnt3" },
+	{ "rx_hist_cnt4" },
+	{ "rx_hist_cnt5" },
+	{ "rx_hist_cnt6" },
+	{ "rx_hist_cnt7" },
+	{ "rx_octets" },
+	{ "rx_code_violations" },
+	{ "rx_len_errors" },
+	{ "rx_crc_errors" },
+	{ "rx_underflows" },
+	{ "rx_overflows" },
+	{ "pause_off_state" },
+	{ "pause_on_state" },
+	{ "pause_received" },
+};
+
+#define NUM_XMAC_STAT_KEYS	ARRAY_SIZE(niu_xmac_stat_keys)
+
+static const struct {
+	const char string[ETH_GSTRING_LEN];
+} niu_bmac_stat_keys[] = {
+	{ "tx_underflow_errors" },
+	{ "tx_max_pkt_size_errors" },
+	{ "tx_bytes" },
+	{ "tx_frames" },
+	{ "rx_overflows" },
+	{ "rx_frames" },
+	{ "rx_align_errors" },
+	{ "rx_crc_errors" },
+	{ "rx_len_errors" },
+	{ "pause_off_state" },
+	{ "pause_on_state" },
+	{ "pause_received" },
+};
+
+#define NUM_BMAC_STAT_KEYS	ARRAY_SIZE(niu_bmac_stat_keys)
+
+static const struct {
+	const char string[ETH_GSTRING_LEN];
+} niu_rxchan_stat_keys[] = {
+	{ "rx_channel" },
+	{ "rx_packets" },
+	{ "rx_bytes" },
+	{ "rx_dropped" },
+	{ "rx_errors" },
+};
+
+#define NUM_RXCHAN_STAT_KEYS	ARRAY_SIZE(niu_rxchan_stat_keys)
+
+static const struct {
+	const char string[ETH_GSTRING_LEN];
+} niu_txchan_stat_keys[] = {
+	{ "tx_channel" },
+	{ "tx_packets" },
+	{ "tx_bytes" },
+	{ "tx_errors" },
+};
+
+#define NUM_TXCHAN_STAT_KEYS	ARRAY_SIZE(niu_txchan_stat_keys)
+
+static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+	struct niu *np = netdev_priv(dev);
+	int i;
+
+	if (stringset != ETH_SS_STATS)
+		return;
+
+	if (np->flags & NIU_FLAGS_XMAC) {
+		memcpy(data, niu_xmac_stat_keys,
+		       sizeof(niu_xmac_stat_keys));
+		data += sizeof(niu_xmac_stat_keys);
+	} else {
+		memcpy(data, niu_bmac_stat_keys,
+		       sizeof(niu_bmac_stat_keys));
+		data += sizeof(niu_bmac_stat_keys);
+	}
+	for (i = 0; i < np->num_rx_rings; i++) {
+		memcpy(data, niu_rxchan_stat_keys,
+		       sizeof(niu_rxchan_stat_keys));
+		data += sizeof(niu_rxchan_stat_keys);
+	}
+	for (i = 0; i < np->num_tx_rings; i++) {
+		memcpy(data, niu_txchan_stat_keys,
+		       sizeof(niu_txchan_stat_keys));
+		data += sizeof(niu_txchan_stat_keys);
+	}
+}
+
+static int niu_get_sset_count(struct net_device *dev, int stringset)
+{
+	struct niu *np = netdev_priv(dev);
+
+	if (stringset != ETH_SS_STATS)
+		return -EINVAL;
+
+	return (np->flags & NIU_FLAGS_XMAC ?
+		 NUM_XMAC_STAT_KEYS :
+		 NUM_BMAC_STAT_KEYS) +
+		(np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
+		(np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
+}
+
+static void niu_get_ethtool_stats(struct net_device *dev,
+				  struct ethtool_stats *stats, u64 *data)
+{
+	struct niu *np = netdev_priv(dev);
+	int i;
+
+	niu_sync_mac_stats(np);
+	if (np->flags & NIU_FLAGS_XMAC) {
+		memcpy(data, &np->mac_stats.xmac,
+		       sizeof(struct niu_xmac_stats));
+		data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
+	} else {
+		memcpy(data, &np->mac_stats.bmac,
+		       sizeof(struct niu_bmac_stats));
+		data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
+	}
+	for (i = 0; i < np->num_rx_rings; i++) {
+		struct rx_ring_info *rp = &np->rx_rings[i];
+
+		niu_sync_rx_discard_stats(np, rp, 0);
+
+		data[0] = rp->rx_channel;
+		data[1] = rp->rx_packets;
+		data[2] = rp->rx_bytes;
+		data[3] = rp->rx_dropped;
+		data[4] = rp->rx_errors;
+		data += 5;
+	}
+	for (i = 0; i < np->num_tx_rings; i++) {
+		struct tx_ring_info *rp = &np->tx_rings[i];
+
+		data[0] = rp->tx_channel;
+		data[1] = rp->tx_packets;
+		data[2] = rp->tx_bytes;
+		data[3] = rp->tx_errors;
+		data += 4;
+	}
+}
+
+static u64 niu_led_state_save(struct niu *np)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		return nr64_mac(XMAC_CONFIG);
+	else
+		return nr64_mac(BMAC_XIF_CONFIG);
+}
+
+static void niu_led_state_restore(struct niu *np, u64 val)
+{
+	if (np->flags & NIU_FLAGS_XMAC)
+		nw64_mac(XMAC_CONFIG, val);
+	else
+		nw64_mac(BMAC_XIF_CONFIG, val);
+}
+
+static void niu_force_led(struct niu *np, int on)
+{
+	u64 val, reg, bit;
+
+	if (np->flags & NIU_FLAGS_XMAC) {
+		reg = XMAC_CONFIG;
+		bit = XMAC_CONFIG_FORCE_LED_ON;
+	} else {
+		reg = BMAC_XIF_CONFIG;
+		bit = BMAC_XIF_CONFIG_LINK_LED;
+	}
+
+	val = nr64_mac(reg);
+	if (on)
+		val |= bit;
+	else
+		val &= ~bit;
+	nw64_mac(reg, val);
+}
+
+static int niu_set_phys_id(struct net_device *dev,
+			   enum ethtool_phys_id_state state)
+
+{
+	struct niu *np = netdev_priv(dev);
+
+	if (!netif_running(dev))
+		return -EAGAIN;
+
+	switch (state) {
+	case ETHTOOL_ID_ACTIVE:
+		np->orig_led_state = niu_led_state_save(np);
+		return 1;	/* cycle on/off once per second */
+
+	case ETHTOOL_ID_ON:
+		niu_force_led(np, 1);
+		break;
+
+	case ETHTOOL_ID_OFF:
+		niu_force_led(np, 0);
+		break;
+
+	case ETHTOOL_ID_INACTIVE:
+		niu_led_state_restore(np, np->orig_led_state);
+	}
+
+	return 0;
+}
+
+static const struct ethtool_ops niu_ethtool_ops = {
+	.get_drvinfo		= niu_get_drvinfo,
+	.get_link		= ethtool_op_get_link,
+	.get_msglevel		= niu_get_msglevel,
+	.set_msglevel		= niu_set_msglevel,
+	.nway_reset		= niu_nway_reset,
+	.get_eeprom_len		= niu_get_eeprom_len,
+	.get_eeprom		= niu_get_eeprom,
+	.get_strings		= niu_get_strings,
+	.get_sset_count		= niu_get_sset_count,
+	.get_ethtool_stats	= niu_get_ethtool_stats,
+	.set_phys_id		= niu_set_phys_id,
+	.get_rxnfc		= niu_get_nfc,
+	.set_rxnfc		= niu_set_nfc,
+	.get_link_ksettings	= niu_get_link_ksettings,
+	.set_link_ksettings	= niu_set_link_ksettings,
+};
+
+static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
+			      int ldg, int ldn)
+{
+	if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
+		return -EINVAL;
+	if (ldn < 0 || ldn > LDN_MAX)
+		return -EINVAL;
+
+	parent->ldg_map[ldn] = ldg;
+
+	if (np->parent->plat_type == PLAT_TYPE_NIU) {
+		/* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
+		 * the firmware, and we're not supposed to change them.
+		 * Validate the mapping, because if it's wrong we probably
+		 * won't get any interrupts and that's painful to debug.
+		 */
+		if (nr64(LDG_NUM(ldn)) != ldg) {
+			dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
+				np->port, ldn, ldg,
+				(unsigned long long) nr64(LDG_NUM(ldn)));
+			return -EINVAL;
+		}
+	} else
+		nw64(LDG_NUM(ldn), ldg);
+
+	return 0;
+}
+
+static int niu_set_ldg_timer_res(struct niu *np, int res)
+{
+	if (res < 0 || res > LDG_TIMER_RES_VAL)
+		return -EINVAL;
+
+
+	nw64(LDG_TIMER_RES, res);
+
+	return 0;
+}
+
+static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
+{
+	if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
+	    (func < 0 || func > 3) ||
+	    (vector < 0 || vector > 0x1f))
+		return -EINVAL;
+
+	nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
+
+	return 0;
+}
+
+static int niu_pci_eeprom_read(struct niu *np, u32 addr)
+{
+	u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
+				 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
+	int limit;
+
+	if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
+		return -EINVAL;
+
+	frame = frame_base;
+	nw64(ESPC_PIO_STAT, frame);
+	limit = 64;
+	do {
+		udelay(5);
+		frame = nr64(ESPC_PIO_STAT);
+		if (frame & ESPC_PIO_STAT_READ_END)
+			break;
+	} while (limit--);
+	if (!(frame & ESPC_PIO_STAT_READ_END)) {
+		dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
+			(unsigned long long) frame);
+		return -ENODEV;
+	}
+
+	frame = frame_base;
+	nw64(ESPC_PIO_STAT, frame);
+	limit = 64;
+	do {
+		udelay(5);
+		frame = nr64(ESPC_PIO_STAT);
+		if (frame & ESPC_PIO_STAT_READ_END)
+			break;
+	} while (limit--);
+	if (!(frame & ESPC_PIO_STAT_READ_END)) {
+		dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
+			(unsigned long long) frame);
+		return -ENODEV;
+	}
+
+	frame = nr64(ESPC_PIO_STAT);
+	return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
+}
+
+static int niu_pci_eeprom_read16(struct niu *np, u32 off)
+{
+	int err = niu_pci_eeprom_read(np, off);
+	u16 val;
+
+	if (err < 0)
+		return err;
+	val = (err << 8);
+	err = niu_pci_eeprom_read(np, off + 1);
+	if (err < 0)
+		return err;
+	val |= (err & 0xff);
+
+	return val;
+}
+
+static int niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
+{
+	int err = niu_pci_eeprom_read(np, off);
+	u16 val;
+
+	if (err < 0)
+		return err;
+
+	val = (err & 0xff);
+	err = niu_pci_eeprom_read(np, off + 1);
+	if (err < 0)
+		return err;
+
+	val |= (err & 0xff) << 8;
+
+	return val;
+}
+
+static int niu_pci_vpd_get_propname(struct niu *np, u32 off, char *namebuf,
+				    int namebuf_len)
+{
+	int i;
+
+	for (i = 0; i < namebuf_len; i++) {
+		int err = niu_pci_eeprom_read(np, off + i);
+		if (err < 0)
+			return err;
+		*namebuf++ = err;
+		if (!err)
+			break;
+	}
+	if (i >= namebuf_len)
+		return -EINVAL;
+
+	return i + 1;
+}
+
+static void niu_vpd_parse_version(struct niu *np)
+{
+	struct niu_vpd *vpd = &np->vpd;
+	int len = strlen(vpd->version) + 1;
+	const char *s = vpd->version;
+	int i;
+
+	for (i = 0; i < len - 5; i++) {
+		if (!strncmp(s + i, "FCode ", 6))
+			break;
+	}
+	if (i >= len - 5)
+		return;
+
+	s += i + 5;
+	sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
+
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "VPD_SCAN: FCODE major(%d) minor(%d)\n",
+		     vpd->fcode_major, vpd->fcode_minor);
+	if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
+	    (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
+	     vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
+		np->flags |= NIU_FLAGS_VPD_VALID;
+}
+
+/* ESPC_PIO_EN_ENABLE must be set */
+static int niu_pci_vpd_scan_props(struct niu *np, u32 start, u32 end)
+{
+	unsigned int found_mask = 0;
+#define FOUND_MASK_MODEL	0x00000001
+#define FOUND_MASK_BMODEL	0x00000002
+#define FOUND_MASK_VERS		0x00000004
+#define FOUND_MASK_MAC		0x00000008
+#define FOUND_MASK_NMAC		0x00000010
+#define FOUND_MASK_PHY		0x00000020
+#define FOUND_MASK_ALL		0x0000003f
+
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "VPD_SCAN: start[%x] end[%x]\n", start, end);
+	while (start < end) {
+		int len, err, prop_len;
+		char namebuf[64];
+		u8 *prop_buf;
+		int max_len;
+
+		if (found_mask == FOUND_MASK_ALL) {
+			niu_vpd_parse_version(np);
+			return 1;
+		}
+
+		err = niu_pci_eeprom_read(np, start + 2);
+		if (err < 0)
+			return err;
+		len = err;
+		start += 3;
+
+		prop_len = niu_pci_eeprom_read(np, start + 4);
+		if (prop_len < 0)
+			return prop_len;
+		err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
+		if (err < 0)
+			return err;
+
+		prop_buf = NULL;
+		max_len = 0;
+		if (!strcmp(namebuf, "model")) {
+			prop_buf = np->vpd.model;
+			max_len = NIU_VPD_MODEL_MAX;
+			found_mask |= FOUND_MASK_MODEL;
+		} else if (!strcmp(namebuf, "board-model")) {
+			prop_buf = np->vpd.board_model;
+			max_len = NIU_VPD_BD_MODEL_MAX;
+			found_mask |= FOUND_MASK_BMODEL;
+		} else if (!strcmp(namebuf, "version")) {
+			prop_buf = np->vpd.version;
+			max_len = NIU_VPD_VERSION_MAX;
+			found_mask |= FOUND_MASK_VERS;
+		} else if (!strcmp(namebuf, "local-mac-address")) {
+			prop_buf = np->vpd.local_mac;
+			max_len = ETH_ALEN;
+			found_mask |= FOUND_MASK_MAC;
+		} else if (!strcmp(namebuf, "num-mac-addresses")) {
+			prop_buf = &np->vpd.mac_num;
+			max_len = 1;
+			found_mask |= FOUND_MASK_NMAC;
+		} else if (!strcmp(namebuf, "phy-type")) {
+			prop_buf = np->vpd.phy_type;
+			max_len = NIU_VPD_PHY_TYPE_MAX;
+			found_mask |= FOUND_MASK_PHY;
+		}
+
+		if (max_len && prop_len > max_len) {
+			dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
+			return -EINVAL;
+		}
+
+		if (prop_buf) {
+			u32 off = start + 5 + err;
+			int i;
+
+			netif_printk(np, probe, KERN_DEBUG, np->dev,
+				     "VPD_SCAN: Reading in property [%s] len[%d]\n",
+				     namebuf, prop_len);
+			for (i = 0; i < prop_len; i++) {
+				err =  niu_pci_eeprom_read(np, off + i);
+				if (err < 0)
+					return err;
+				*prop_buf++ = err;
+			}
+		}
+
+		start += len;
+	}
+
+	return 0;
+}
+
+/* ESPC_PIO_EN_ENABLE must be set */
+static int niu_pci_vpd_fetch(struct niu *np, u32 start)
+{
+	u32 offset;
+	int err;
+
+	err = niu_pci_eeprom_read16_swp(np, start + 1);
+	if (err < 0)
+		return err;
+
+	offset = err + 3;
+
+	while (start + offset < ESPC_EEPROM_SIZE) {
+		u32 here = start + offset;
+		u32 end;
+
+		err = niu_pci_eeprom_read(np, here);
+		if (err < 0)
+			return err;
+		if (err != 0x90)
+			return -EINVAL;
+
+		err = niu_pci_eeprom_read16_swp(np, here + 1);
+		if (err < 0)
+			return err;
+
+		here = start + offset + 3;
+		end = start + offset + err;
+
+		offset += err;
+
+		err = niu_pci_vpd_scan_props(np, here, end);
+		if (err < 0)
+			return err;
+		/* ret == 1 is not an error */
+		if (err == 1)
+			return 0;
+	}
+	return 0;
+}
+
+/* ESPC_PIO_EN_ENABLE must be set */
+static u32 niu_pci_vpd_offset(struct niu *np)
+{
+	u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
+	int err;
+
+	while (start < end) {
+		ret = start;
+
+		/* ROM header signature?  */
+		err = niu_pci_eeprom_read16(np, start +  0);
+		if (err != 0x55aa)
+			return 0;
+
+		/* Apply offset to PCI data structure.  */
+		err = niu_pci_eeprom_read16(np, start + 23);
+		if (err < 0)
+			return 0;
+		start += err;
+
+		/* Check for "PCIR" signature.  */
+		err = niu_pci_eeprom_read16(np, start +  0);
+		if (err != 0x5043)
+			return 0;
+		err = niu_pci_eeprom_read16(np, start +  2);
+		if (err != 0x4952)
+			return 0;
+
+		/* Check for OBP image type.  */
+		err = niu_pci_eeprom_read(np, start + 20);
+		if (err < 0)
+			return 0;
+		if (err != 0x01) {
+			err = niu_pci_eeprom_read(np, ret + 2);
+			if (err < 0)
+				return 0;
+
+			start = ret + (err * 512);
+			continue;
+		}
+
+		err = niu_pci_eeprom_read16_swp(np, start + 8);
+		if (err < 0)
+			return err;
+		ret += err;
+
+		err = niu_pci_eeprom_read(np, ret + 0);
+		if (err != 0x82)
+			return 0;
+
+		return ret;
+	}
+
+	return 0;
+}
+
+static int niu_phy_type_prop_decode(struct niu *np, const char *phy_prop)
+{
+	if (!strcmp(phy_prop, "mif")) {
+		/* 1G copper, MII */
+		np->flags &= ~(NIU_FLAGS_FIBER |
+			       NIU_FLAGS_10G);
+		np->mac_xcvr = MAC_XCVR_MII;
+	} else if (!strcmp(phy_prop, "xgf")) {
+		/* 10G fiber, XPCS */
+		np->flags |= (NIU_FLAGS_10G |
+			      NIU_FLAGS_FIBER);
+		np->mac_xcvr = MAC_XCVR_XPCS;
+	} else if (!strcmp(phy_prop, "pcs")) {
+		/* 1G fiber, PCS */
+		np->flags &= ~NIU_FLAGS_10G;
+		np->flags |= NIU_FLAGS_FIBER;
+		np->mac_xcvr = MAC_XCVR_PCS;
+	} else if (!strcmp(phy_prop, "xgc")) {
+		/* 10G copper, XPCS */
+		np->flags |= NIU_FLAGS_10G;
+		np->flags &= ~NIU_FLAGS_FIBER;
+		np->mac_xcvr = MAC_XCVR_XPCS;
+	} else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
+		/* 10G Serdes or 1G Serdes, default to 10G */
+		np->flags |= NIU_FLAGS_10G;
+		np->flags &= ~NIU_FLAGS_FIBER;
+		np->flags |= NIU_FLAGS_XCVR_SERDES;
+		np->mac_xcvr = MAC_XCVR_XPCS;
+	} else {
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int niu_pci_vpd_get_nports(struct niu *np)
+{
+	int ports = 0;
+
+	if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
+	    (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
+	    (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
+	    (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
+	    (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
+		ports = 4;
+	} else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
+		   (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
+		   (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
+		   (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
+		ports = 2;
+	}
+
+	return ports;
+}
+
+static void niu_pci_vpd_validate(struct niu *np)
+{
+	struct net_device *dev = np->dev;
+	struct niu_vpd *vpd = &np->vpd;
+	u8 val8;
+
+	if (!is_valid_ether_addr(&vpd->local_mac[0])) {
+		dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
+
+		np->flags &= ~NIU_FLAGS_VPD_VALID;
+		return;
+	}
+
+	if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
+	    !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
+		np->flags |= NIU_FLAGS_10G;
+		np->flags &= ~NIU_FLAGS_FIBER;
+		np->flags |= NIU_FLAGS_XCVR_SERDES;
+		np->mac_xcvr = MAC_XCVR_PCS;
+		if (np->port > 1) {
+			np->flags |= NIU_FLAGS_FIBER;
+			np->flags &= ~NIU_FLAGS_10G;
+		}
+		if (np->flags & NIU_FLAGS_10G)
+			np->mac_xcvr = MAC_XCVR_XPCS;
+	} else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
+		np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
+			      NIU_FLAGS_HOTPLUG_PHY);
+	} else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
+		dev_err(np->device, "Illegal phy string [%s]\n",
+			np->vpd.phy_type);
+		dev_err(np->device, "Falling back to SPROM\n");
+		np->flags &= ~NIU_FLAGS_VPD_VALID;
+		return;
+	}
+
+	memcpy(dev->dev_addr, vpd->local_mac, ETH_ALEN);
+
+	val8 = dev->dev_addr[5];
+	dev->dev_addr[5] += np->port;
+	if (dev->dev_addr[5] < val8)
+		dev->dev_addr[4]++;
+}
+
+static int niu_pci_probe_sprom(struct niu *np)
+{
+	struct net_device *dev = np->dev;
+	int len, i;
+	u64 val, sum;
+	u8 val8;
+
+	val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
+	val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
+	len = val / 4;
+
+	np->eeprom_len = len;
+
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "SPROM: Image size %llu\n", (unsigned long long)val);
+
+	sum = 0;
+	for (i = 0; i < len; i++) {
+		val = nr64(ESPC_NCR(i));
+		sum += (val >>  0) & 0xff;
+		sum += (val >>  8) & 0xff;
+		sum += (val >> 16) & 0xff;
+		sum += (val >> 24) & 0xff;
+	}
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "SPROM: Checksum %x\n", (int)(sum & 0xff));
+	if ((sum & 0xff) != 0xab) {
+		dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
+		return -EINVAL;
+	}
+
+	val = nr64(ESPC_PHY_TYPE);
+	switch (np->port) {
+	case 0:
+		val8 = (val & ESPC_PHY_TYPE_PORT0) >>
+			ESPC_PHY_TYPE_PORT0_SHIFT;
+		break;
+	case 1:
+		val8 = (val & ESPC_PHY_TYPE_PORT1) >>
+			ESPC_PHY_TYPE_PORT1_SHIFT;
+		break;
+	case 2:
+		val8 = (val & ESPC_PHY_TYPE_PORT2) >>
+			ESPC_PHY_TYPE_PORT2_SHIFT;
+		break;
+	case 3:
+		val8 = (val & ESPC_PHY_TYPE_PORT3) >>
+			ESPC_PHY_TYPE_PORT3_SHIFT;
+		break;
+	default:
+		dev_err(np->device, "Bogus port number %u\n",
+			np->port);
+		return -EINVAL;
+	}
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "SPROM: PHY type %x\n", val8);
+
+	switch (val8) {
+	case ESPC_PHY_TYPE_1G_COPPER:
+		/* 1G copper, MII */
+		np->flags &= ~(NIU_FLAGS_FIBER |
+			       NIU_FLAGS_10G);
+		np->mac_xcvr = MAC_XCVR_MII;
+		break;
+
+	case ESPC_PHY_TYPE_1G_FIBER:
+		/* 1G fiber, PCS */
+		np->flags &= ~NIU_FLAGS_10G;
+		np->flags |= NIU_FLAGS_FIBER;
+		np->mac_xcvr = MAC_XCVR_PCS;
+		break;
+
+	case ESPC_PHY_TYPE_10G_COPPER:
+		/* 10G copper, XPCS */
+		np->flags |= NIU_FLAGS_10G;
+		np->flags &= ~NIU_FLAGS_FIBER;
+		np->mac_xcvr = MAC_XCVR_XPCS;
+		break;
+
+	case ESPC_PHY_TYPE_10G_FIBER:
+		/* 10G fiber, XPCS */
+		np->flags |= (NIU_FLAGS_10G |
+			      NIU_FLAGS_FIBER);
+		np->mac_xcvr = MAC_XCVR_XPCS;
+		break;
+
+	default:
+		dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
+		return -EINVAL;
+	}
+
+	val = nr64(ESPC_MAC_ADDR0);
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
+	dev->dev_addr[0] = (val >>  0) & 0xff;
+	dev->dev_addr[1] = (val >>  8) & 0xff;
+	dev->dev_addr[2] = (val >> 16) & 0xff;
+	dev->dev_addr[3] = (val >> 24) & 0xff;
+
+	val = nr64(ESPC_MAC_ADDR1);
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
+	dev->dev_addr[4] = (val >>  0) & 0xff;
+	dev->dev_addr[5] = (val >>  8) & 0xff;
+
+	if (!is_valid_ether_addr(&dev->dev_addr[0])) {
+		dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
+			dev->dev_addr);
+		return -EINVAL;
+	}
+
+	val8 = dev->dev_addr[5];
+	dev->dev_addr[5] += np->port;
+	if (dev->dev_addr[5] < val8)
+		dev->dev_addr[4]++;
+
+	val = nr64(ESPC_MOD_STR_LEN);
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
+	if (val >= 8 * 4)
+		return -EINVAL;
+
+	for (i = 0; i < val; i += 4) {
+		u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
+
+		np->vpd.model[i + 3] = (tmp >>  0) & 0xff;
+		np->vpd.model[i + 2] = (tmp >>  8) & 0xff;
+		np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
+		np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
+	}
+	np->vpd.model[val] = '\0';
+
+	val = nr64(ESPC_BD_MOD_STR_LEN);
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
+	if (val >= 4 * 4)
+		return -EINVAL;
+
+	for (i = 0; i < val; i += 4) {
+		u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
+
+		np->vpd.board_model[i + 3] = (tmp >>  0) & 0xff;
+		np->vpd.board_model[i + 2] = (tmp >>  8) & 0xff;
+		np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
+		np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
+	}
+	np->vpd.board_model[val] = '\0';
+
+	np->vpd.mac_num =
+		nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
+
+	return 0;
+}
+
+static int niu_get_and_validate_port(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+
+	if (np->port <= 1)
+		np->flags |= NIU_FLAGS_XMAC;
+
+	if (!parent->num_ports) {
+		if (parent->plat_type == PLAT_TYPE_NIU) {
+			parent->num_ports = 2;
+		} else {
+			parent->num_ports = niu_pci_vpd_get_nports(np);
+			if (!parent->num_ports) {
+				/* Fall back to SPROM as last resort.
+				 * This will fail on most cards.
+				 */
+				parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
+					ESPC_NUM_PORTS_MACS_VAL;
+
+				/* All of the current probing methods fail on
+				 * Maramba on-board parts.
+				 */
+				if (!parent->num_ports)
+					parent->num_ports = 4;
+			}
+		}
+	}
+
+	if (np->port >= parent->num_ports)
+		return -ENODEV;
+
+	return 0;
+}
+
+static int phy_record(struct niu_parent *parent, struct phy_probe_info *p,
+		      int dev_id_1, int dev_id_2, u8 phy_port, int type)
+{
+	u32 id = (dev_id_1 << 16) | dev_id_2;
+	u8 idx;
+
+	if (dev_id_1 < 0 || dev_id_2 < 0)
+		return 0;
+	if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
+		/* Because of the NIU_PHY_ID_MASK being applied, the 8704
+		 * test covers the 8706 as well.
+		 */
+		if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
+		    ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
+			return 0;
+	} else {
+		if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
+			return 0;
+	}
+
+	pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
+		parent->index, id,
+		type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
+		type == PHY_TYPE_PCS ? "PCS" : "MII",
+		phy_port);
+
+	if (p->cur[type] >= NIU_MAX_PORTS) {
+		pr_err("Too many PHY ports\n");
+		return -EINVAL;
+	}
+	idx = p->cur[type];
+	p->phy_id[type][idx] = id;
+	p->phy_port[type][idx] = phy_port;
+	p->cur[type] = idx + 1;
+	return 0;
+}
+
+static int port_has_10g(struct phy_probe_info *p, int port)
+{
+	int i;
+
+	for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
+		if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
+			return 1;
+	}
+	for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
+		if (p->phy_port[PHY_TYPE_PCS][i] == port)
+			return 1;
+	}
+
+	return 0;
+}
+
+static int count_10g_ports(struct phy_probe_info *p, int *lowest)
+{
+	int port, cnt;
+
+	cnt = 0;
+	*lowest = 32;
+	for (port = 8; port < 32; port++) {
+		if (port_has_10g(p, port)) {
+			if (!cnt)
+				*lowest = port;
+			cnt++;
+		}
+	}
+
+	return cnt;
+}
+
+static int count_1g_ports(struct phy_probe_info *p, int *lowest)
+{
+	*lowest = 32;
+	if (p->cur[PHY_TYPE_MII])
+		*lowest = p->phy_port[PHY_TYPE_MII][0];
+
+	return p->cur[PHY_TYPE_MII];
+}
+
+static void niu_n2_divide_channels(struct niu_parent *parent)
+{
+	int num_ports = parent->num_ports;
+	int i;
+
+	for (i = 0; i < num_ports; i++) {
+		parent->rxchan_per_port[i] = (16 / num_ports);
+		parent->txchan_per_port[i] = (16 / num_ports);
+
+		pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
+			parent->index, i,
+			parent->rxchan_per_port[i],
+			parent->txchan_per_port[i]);
+	}
+}
+
+static void niu_divide_channels(struct niu_parent *parent,
+				int num_10g, int num_1g)
+{
+	int num_ports = parent->num_ports;
+	int rx_chans_per_10g, rx_chans_per_1g;
+	int tx_chans_per_10g, tx_chans_per_1g;
+	int i, tot_rx, tot_tx;
+
+	if (!num_10g || !num_1g) {
+		rx_chans_per_10g = rx_chans_per_1g =
+			(NIU_NUM_RXCHAN / num_ports);
+		tx_chans_per_10g = tx_chans_per_1g =
+			(NIU_NUM_TXCHAN / num_ports);
+	} else {
+		rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
+		rx_chans_per_10g = (NIU_NUM_RXCHAN -
+				    (rx_chans_per_1g * num_1g)) /
+			num_10g;
+
+		tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
+		tx_chans_per_10g = (NIU_NUM_TXCHAN -
+				    (tx_chans_per_1g * num_1g)) /
+			num_10g;
+	}
+
+	tot_rx = tot_tx = 0;
+	for (i = 0; i < num_ports; i++) {
+		int type = phy_decode(parent->port_phy, i);
+
+		if (type == PORT_TYPE_10G) {
+			parent->rxchan_per_port[i] = rx_chans_per_10g;
+			parent->txchan_per_port[i] = tx_chans_per_10g;
+		} else {
+			parent->rxchan_per_port[i] = rx_chans_per_1g;
+			parent->txchan_per_port[i] = tx_chans_per_1g;
+		}
+		pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
+			parent->index, i,
+			parent->rxchan_per_port[i],
+			parent->txchan_per_port[i]);
+		tot_rx += parent->rxchan_per_port[i];
+		tot_tx += parent->txchan_per_port[i];
+	}
+
+	if (tot_rx > NIU_NUM_RXCHAN) {
+		pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
+		       parent->index, tot_rx);
+		for (i = 0; i < num_ports; i++)
+			parent->rxchan_per_port[i] = 1;
+	}
+	if (tot_tx > NIU_NUM_TXCHAN) {
+		pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
+		       parent->index, tot_tx);
+		for (i = 0; i < num_ports; i++)
+			parent->txchan_per_port[i] = 1;
+	}
+	if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
+		pr_warn("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
+			parent->index, tot_rx, tot_tx);
+	}
+}
+
+static void niu_divide_rdc_groups(struct niu_parent *parent,
+				  int num_10g, int num_1g)
+{
+	int i, num_ports = parent->num_ports;
+	int rdc_group, rdc_groups_per_port;
+	int rdc_channel_base;
+
+	rdc_group = 0;
+	rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
+
+	rdc_channel_base = 0;
+
+	for (i = 0; i < num_ports; i++) {
+		struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
+		int grp, num_channels = parent->rxchan_per_port[i];
+		int this_channel_offset;
+
+		tp->first_table_num = rdc_group;
+		tp->num_tables = rdc_groups_per_port;
+		this_channel_offset = 0;
+		for (grp = 0; grp < tp->num_tables; grp++) {
+			struct rdc_table *rt = &tp->tables[grp];
+			int slot;
+
+			pr_info("niu%d: Port %d RDC tbl(%d) [ ",
+				parent->index, i, tp->first_table_num + grp);
+			for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
+				rt->rxdma_channel[slot] =
+					rdc_channel_base + this_channel_offset;
+
+				pr_cont("%d ", rt->rxdma_channel[slot]);
+
+				if (++this_channel_offset == num_channels)
+					this_channel_offset = 0;
+			}
+			pr_cont("]\n");
+		}
+
+		parent->rdc_default[i] = rdc_channel_base;
+
+		rdc_channel_base += num_channels;
+		rdc_group += rdc_groups_per_port;
+	}
+}
+
+static int fill_phy_probe_info(struct niu *np, struct niu_parent *parent,
+			       struct phy_probe_info *info)
+{
+	unsigned long flags;
+	int port, err;
+
+	memset(info, 0, sizeof(*info));
+
+	/* Port 0 to 7 are reserved for onboard Serdes, probe the rest.  */
+	niu_lock_parent(np, flags);
+	err = 0;
+	for (port = 8; port < 32; port++) {
+		int dev_id_1, dev_id_2;
+
+		dev_id_1 = mdio_read(np, port,
+				     NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
+		dev_id_2 = mdio_read(np, port,
+				     NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
+		err = phy_record(parent, info, dev_id_1, dev_id_2, port,
+				 PHY_TYPE_PMA_PMD);
+		if (err)
+			break;
+		dev_id_1 = mdio_read(np, port,
+				     NIU_PCS_DEV_ADDR, MII_PHYSID1);
+		dev_id_2 = mdio_read(np, port,
+				     NIU_PCS_DEV_ADDR, MII_PHYSID2);
+		err = phy_record(parent, info, dev_id_1, dev_id_2, port,
+				 PHY_TYPE_PCS);
+		if (err)
+			break;
+		dev_id_1 = mii_read(np, port, MII_PHYSID1);
+		dev_id_2 = mii_read(np, port, MII_PHYSID2);
+		err = phy_record(parent, info, dev_id_1, dev_id_2, port,
+				 PHY_TYPE_MII);
+		if (err)
+			break;
+	}
+	niu_unlock_parent(np, flags);
+
+	return err;
+}
+
+static int walk_phys(struct niu *np, struct niu_parent *parent)
+{
+	struct phy_probe_info *info = &parent->phy_probe_info;
+	int lowest_10g, lowest_1g;
+	int num_10g, num_1g;
+	u32 val;
+	int err;
+
+	num_10g = num_1g = 0;
+
+	if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
+	    !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
+		num_10g = 0;
+		num_1g = 2;
+		parent->plat_type = PLAT_TYPE_ATCA_CP3220;
+		parent->num_ports = 4;
+		val = (phy_encode(PORT_TYPE_1G, 0) |
+		       phy_encode(PORT_TYPE_1G, 1) |
+		       phy_encode(PORT_TYPE_1G, 2) |
+		       phy_encode(PORT_TYPE_1G, 3));
+	} else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
+		num_10g = 2;
+		num_1g = 0;
+		parent->num_ports = 2;
+		val = (phy_encode(PORT_TYPE_10G, 0) |
+		       phy_encode(PORT_TYPE_10G, 1));
+	} else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
+		   (parent->plat_type == PLAT_TYPE_NIU)) {
+		/* this is the Monza case */
+		if (np->flags & NIU_FLAGS_10G) {
+			val = (phy_encode(PORT_TYPE_10G, 0) |
+			       phy_encode(PORT_TYPE_10G, 1));
+		} else {
+			val = (phy_encode(PORT_TYPE_1G, 0) |
+			       phy_encode(PORT_TYPE_1G, 1));
+		}
+	} else {
+		err = fill_phy_probe_info(np, parent, info);
+		if (err)
+			return err;
+
+		num_10g = count_10g_ports(info, &lowest_10g);
+		num_1g = count_1g_ports(info, &lowest_1g);
+
+		switch ((num_10g << 4) | num_1g) {
+		case 0x24:
+			if (lowest_1g == 10)
+				parent->plat_type = PLAT_TYPE_VF_P0;
+			else if (lowest_1g == 26)
+				parent->plat_type = PLAT_TYPE_VF_P1;
+			else
+				goto unknown_vg_1g_port;
+
+			/* fallthru */
+		case 0x22:
+			val = (phy_encode(PORT_TYPE_10G, 0) |
+			       phy_encode(PORT_TYPE_10G, 1) |
+			       phy_encode(PORT_TYPE_1G, 2) |
+			       phy_encode(PORT_TYPE_1G, 3));
+			break;
+
+		case 0x20:
+			val = (phy_encode(PORT_TYPE_10G, 0) |
+			       phy_encode(PORT_TYPE_10G, 1));
+			break;
+
+		case 0x10:
+			val = phy_encode(PORT_TYPE_10G, np->port);
+			break;
+
+		case 0x14:
+			if (lowest_1g == 10)
+				parent->plat_type = PLAT_TYPE_VF_P0;
+			else if (lowest_1g == 26)
+				parent->plat_type = PLAT_TYPE_VF_P1;
+			else
+				goto unknown_vg_1g_port;
+
+			/* fallthru */
+		case 0x13:
+			if ((lowest_10g & 0x7) == 0)
+				val = (phy_encode(PORT_TYPE_10G, 0) |
+				       phy_encode(PORT_TYPE_1G, 1) |
+				       phy_encode(PORT_TYPE_1G, 2) |
+				       phy_encode(PORT_TYPE_1G, 3));
+			else
+				val = (phy_encode(PORT_TYPE_1G, 0) |
+				       phy_encode(PORT_TYPE_10G, 1) |
+				       phy_encode(PORT_TYPE_1G, 2) |
+				       phy_encode(PORT_TYPE_1G, 3));
+			break;
+
+		case 0x04:
+			if (lowest_1g == 10)
+				parent->plat_type = PLAT_TYPE_VF_P0;
+			else if (lowest_1g == 26)
+				parent->plat_type = PLAT_TYPE_VF_P1;
+			else
+				goto unknown_vg_1g_port;
+
+			val = (phy_encode(PORT_TYPE_1G, 0) |
+			       phy_encode(PORT_TYPE_1G, 1) |
+			       phy_encode(PORT_TYPE_1G, 2) |
+			       phy_encode(PORT_TYPE_1G, 3));
+			break;
+
+		default:
+			pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
+			       num_10g, num_1g);
+			return -EINVAL;
+		}
+	}
+
+	parent->port_phy = val;
+
+	if (parent->plat_type == PLAT_TYPE_NIU)
+		niu_n2_divide_channels(parent);
+	else
+		niu_divide_channels(parent, num_10g, num_1g);
+
+	niu_divide_rdc_groups(parent, num_10g, num_1g);
+
+	return 0;
+
+unknown_vg_1g_port:
+	pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
+	return -EINVAL;
+}
+
+static int niu_probe_ports(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+	int err, i;
+
+	if (parent->port_phy == PORT_PHY_UNKNOWN) {
+		err = walk_phys(np, parent);
+		if (err)
+			return err;
+
+		niu_set_ldg_timer_res(np, 2);
+		for (i = 0; i <= LDN_MAX; i++)
+			niu_ldn_irq_enable(np, i, 0);
+	}
+
+	if (parent->port_phy == PORT_PHY_INVALID)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int niu_classifier_swstate_init(struct niu *np)
+{
+	struct niu_classifier *cp = &np->clas;
+
+	cp->tcam_top = (u16) np->port;
+	cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
+	cp->h1_init = 0xffffffff;
+	cp->h2_init = 0xffff;
+
+	return fflp_early_init(np);
+}
+
+static void niu_link_config_init(struct niu *np)
+{
+	struct niu_link_config *lp = &np->link_config;
+
+	lp->advertising = (ADVERTISED_10baseT_Half |
+			   ADVERTISED_10baseT_Full |
+			   ADVERTISED_100baseT_Half |
+			   ADVERTISED_100baseT_Full |
+			   ADVERTISED_1000baseT_Half |
+			   ADVERTISED_1000baseT_Full |
+			   ADVERTISED_10000baseT_Full |
+			   ADVERTISED_Autoneg);
+	lp->speed = lp->active_speed = SPEED_INVALID;
+	lp->duplex = DUPLEX_FULL;
+	lp->active_duplex = DUPLEX_INVALID;
+	lp->autoneg = 1;
+#if 0
+	lp->loopback_mode = LOOPBACK_MAC;
+	lp->active_speed = SPEED_10000;
+	lp->active_duplex = DUPLEX_FULL;
+#else
+	lp->loopback_mode = LOOPBACK_DISABLED;
+#endif
+}
+
+static int niu_init_mac_ipp_pcs_base(struct niu *np)
+{
+	switch (np->port) {
+	case 0:
+		np->mac_regs = np->regs + XMAC_PORT0_OFF;
+		np->ipp_off  = 0x00000;
+		np->pcs_off  = 0x04000;
+		np->xpcs_off = 0x02000;
+		break;
+
+	case 1:
+		np->mac_regs = np->regs + XMAC_PORT1_OFF;
+		np->ipp_off  = 0x08000;
+		np->pcs_off  = 0x0a000;
+		np->xpcs_off = 0x08000;
+		break;
+
+	case 2:
+		np->mac_regs = np->regs + BMAC_PORT2_OFF;
+		np->ipp_off  = 0x04000;
+		np->pcs_off  = 0x0e000;
+		np->xpcs_off = ~0UL;
+		break;
+
+	case 3:
+		np->mac_regs = np->regs + BMAC_PORT3_OFF;
+		np->ipp_off  = 0x0c000;
+		np->pcs_off  = 0x12000;
+		np->xpcs_off = ~0UL;
+		break;
+
+	default:
+		dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void niu_try_msix(struct niu *np, u8 *ldg_num_map)
+{
+	struct msix_entry msi_vec[NIU_NUM_LDG];
+	struct niu_parent *parent = np->parent;
+	struct pci_dev *pdev = np->pdev;
+	int i, num_irqs;
+	u8 first_ldg;
+
+	first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
+	for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
+		ldg_num_map[i] = first_ldg + i;
+
+	num_irqs = (parent->rxchan_per_port[np->port] +
+		    parent->txchan_per_port[np->port] +
+		    (np->port == 0 ? 3 : 1));
+	BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
+
+	for (i = 0; i < num_irqs; i++) {
+		msi_vec[i].vector = 0;
+		msi_vec[i].entry = i;
+	}
+
+	num_irqs = pci_enable_msix_range(pdev, msi_vec, 1, num_irqs);
+	if (num_irqs < 0) {
+		np->flags &= ~NIU_FLAGS_MSIX;
+		return;
+	}
+
+	np->flags |= NIU_FLAGS_MSIX;
+	for (i = 0; i < num_irqs; i++)
+		np->ldg[i].irq = msi_vec[i].vector;
+	np->num_ldg = num_irqs;
+}
+
+static int niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
+{
+#ifdef CONFIG_SPARC64
+	struct platform_device *op = np->op;
+	const u32 *int_prop;
+	int i;
+
+	int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
+	if (!int_prop)
+		return -ENODEV;
+
+	for (i = 0; i < op->archdata.num_irqs; i++) {
+		ldg_num_map[i] = int_prop[i];
+		np->ldg[i].irq = op->archdata.irqs[i];
+	}
+
+	np->num_ldg = op->archdata.num_irqs;
+
+	return 0;
+#else
+	return -EINVAL;
+#endif
+}
+
+static int niu_ldg_init(struct niu *np)
+{
+	struct niu_parent *parent = np->parent;
+	u8 ldg_num_map[NIU_NUM_LDG];
+	int first_chan, num_chan;
+	int i, err, ldg_rotor;
+	u8 port;
+
+	np->num_ldg = 1;
+	np->ldg[0].irq = np->dev->irq;
+	if (parent->plat_type == PLAT_TYPE_NIU) {
+		err = niu_n2_irq_init(np, ldg_num_map);
+		if (err)
+			return err;
+	} else
+		niu_try_msix(np, ldg_num_map);
+
+	port = np->port;
+	for (i = 0; i < np->num_ldg; i++) {
+		struct niu_ldg *lp = &np->ldg[i];
+
+		netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
+
+		lp->np = np;
+		lp->ldg_num = ldg_num_map[i];
+		lp->timer = 2; /* XXX */
+
+		/* On N2 NIU the firmware has setup the SID mappings so they go
+		 * to the correct values that will route the LDG to the proper
+		 * interrupt in the NCU interrupt table.
+		 */
+		if (np->parent->plat_type != PLAT_TYPE_NIU) {
+			err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
+			if (err)
+				return err;
+		}
+	}
+
+	/* We adopt the LDG assignment ordering used by the N2 NIU
+	 * 'interrupt' properties because that simplifies a lot of
+	 * things.  This ordering is:
+	 *
+	 *	MAC
+	 *	MIF	(if port zero)
+	 *	SYSERR	(if port zero)
+	 *	RX channels
+	 *	TX channels
+	 */
+
+	ldg_rotor = 0;
+
+	err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
+				  LDN_MAC(port));
+	if (err)
+		return err;
+
+	ldg_rotor++;
+	if (ldg_rotor == np->num_ldg)
+		ldg_rotor = 0;
+
+	if (port == 0) {
+		err = niu_ldg_assign_ldn(np, parent,
+					 ldg_num_map[ldg_rotor],
+					 LDN_MIF);
+		if (err)
+			return err;
+
+		ldg_rotor++;
+		if (ldg_rotor == np->num_ldg)
+			ldg_rotor = 0;
+
+		err = niu_ldg_assign_ldn(np, parent,
+					 ldg_num_map[ldg_rotor],
+					 LDN_DEVICE_ERROR);
+		if (err)
+			return err;
+
+		ldg_rotor++;
+		if (ldg_rotor == np->num_ldg)
+			ldg_rotor = 0;
+
+	}
+
+	first_chan = 0;
+	for (i = 0; i < port; i++)
+		first_chan += parent->rxchan_per_port[i];
+	num_chan = parent->rxchan_per_port[port];
+
+	for (i = first_chan; i < (first_chan + num_chan); i++) {
+		err = niu_ldg_assign_ldn(np, parent,
+					 ldg_num_map[ldg_rotor],
+					 LDN_RXDMA(i));
+		if (err)
+			return err;
+		ldg_rotor++;
+		if (ldg_rotor == np->num_ldg)
+			ldg_rotor = 0;
+	}
+
+	first_chan = 0;
+	for (i = 0; i < port; i++)
+		first_chan += parent->txchan_per_port[i];
+	num_chan = parent->txchan_per_port[port];
+	for (i = first_chan; i < (first_chan + num_chan); i++) {
+		err = niu_ldg_assign_ldn(np, parent,
+					 ldg_num_map[ldg_rotor],
+					 LDN_TXDMA(i));
+		if (err)
+			return err;
+		ldg_rotor++;
+		if (ldg_rotor == np->num_ldg)
+			ldg_rotor = 0;
+	}
+
+	return 0;
+}
+
+static void niu_ldg_free(struct niu *np)
+{
+	if (np->flags & NIU_FLAGS_MSIX)
+		pci_disable_msix(np->pdev);
+}
+
+static int niu_get_of_props(struct niu *np)
+{
+#ifdef CONFIG_SPARC64
+	struct net_device *dev = np->dev;
+	struct device_node *dp;
+	const char *phy_type;
+	const u8 *mac_addr;
+	const char *model;
+	int prop_len;
+
+	if (np->parent->plat_type == PLAT_TYPE_NIU)
+		dp = np->op->dev.of_node;
+	else
+		dp = pci_device_to_OF_node(np->pdev);
+
+	phy_type = of_get_property(dp, "phy-type", &prop_len);
+	if (!phy_type) {
+		netdev_err(dev, "%pOF: OF node lacks phy-type property\n", dp);
+		return -EINVAL;
+	}
+
+	if (!strcmp(phy_type, "none"))
+		return -ENODEV;
+
+	strcpy(np->vpd.phy_type, phy_type);
+
+	if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
+		netdev_err(dev, "%pOF: Illegal phy string [%s]\n",
+			   dp, np->vpd.phy_type);
+		return -EINVAL;
+	}
+
+	mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
+	if (!mac_addr) {
+		netdev_err(dev, "%pOF: OF node lacks local-mac-address property\n",
+			   dp);
+		return -EINVAL;
+	}
+	if (prop_len != dev->addr_len) {
+		netdev_err(dev, "%pOF: OF MAC address prop len (%d) is wrong\n",
+			   dp, prop_len);
+	}
+	memcpy(dev->dev_addr, mac_addr, dev->addr_len);
+	if (!is_valid_ether_addr(&dev->dev_addr[0])) {
+		netdev_err(dev, "%pOF: OF MAC address is invalid\n", dp);
+		netdev_err(dev, "%pOF: [ %pM ]\n", dp, dev->dev_addr);
+		return -EINVAL;
+	}
+
+	model = of_get_property(dp, "model", &prop_len);
+
+	if (model)
+		strcpy(np->vpd.model, model);
+
+	if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
+		np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
+			NIU_FLAGS_HOTPLUG_PHY);
+	}
+
+	return 0;
+#else
+	return -EINVAL;
+#endif
+}
+
+static int niu_get_invariants(struct niu *np)
+{
+	int err, have_props;
+	u32 offset;
+
+	err = niu_get_of_props(np);
+	if (err == -ENODEV)
+		return err;
+
+	have_props = !err;
+
+	err = niu_init_mac_ipp_pcs_base(np);
+	if (err)
+		return err;
+
+	if (have_props) {
+		err = niu_get_and_validate_port(np);
+		if (err)
+			return err;
+
+	} else  {
+		if (np->parent->plat_type == PLAT_TYPE_NIU)
+			return -EINVAL;
+
+		nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
+		offset = niu_pci_vpd_offset(np);
+		netif_printk(np, probe, KERN_DEBUG, np->dev,
+			     "%s() VPD offset [%08x]\n", __func__, offset);
+		if (offset) {
+			err = niu_pci_vpd_fetch(np, offset);
+			if (err < 0)
+				return err;
+		}
+		nw64(ESPC_PIO_EN, 0);
+
+		if (np->flags & NIU_FLAGS_VPD_VALID) {
+			niu_pci_vpd_validate(np);
+			err = niu_get_and_validate_port(np);
+			if (err)
+				return err;
+		}
+
+		if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
+			err = niu_get_and_validate_port(np);
+			if (err)
+				return err;
+			err = niu_pci_probe_sprom(np);
+			if (err)
+				return err;
+		}
+	}
+
+	err = niu_probe_ports(np);
+	if (err)
+		return err;
+
+	niu_ldg_init(np);
+
+	niu_classifier_swstate_init(np);
+	niu_link_config_init(np);
+
+	err = niu_determine_phy_disposition(np);
+	if (!err)
+		err = niu_init_link(np);
+
+	return err;
+}
+
+static LIST_HEAD(niu_parent_list);
+static DEFINE_MUTEX(niu_parent_lock);
+static int niu_parent_index;
+
+static ssize_t show_port_phy(struct device *dev,
+			     struct device_attribute *attr, char *buf)
+{
+	struct platform_device *plat_dev = to_platform_device(dev);
+	struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
+	u32 port_phy = p->port_phy;
+	char *orig_buf = buf;
+	int i;
+
+	if (port_phy == PORT_PHY_UNKNOWN ||
+	    port_phy == PORT_PHY_INVALID)
+		return 0;
+
+	for (i = 0; i < p->num_ports; i++) {
+		const char *type_str;
+		int type;
+
+		type = phy_decode(port_phy, i);
+		if (type == PORT_TYPE_10G)
+			type_str = "10G";
+		else
+			type_str = "1G";
+		buf += sprintf(buf,
+			       (i == 0) ? "%s" : " %s",
+			       type_str);
+	}
+	buf += sprintf(buf, "\n");
+	return buf - orig_buf;
+}
+
+static ssize_t show_plat_type(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	struct platform_device *plat_dev = to_platform_device(dev);
+	struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
+	const char *type_str;
+
+	switch (p->plat_type) {
+	case PLAT_TYPE_ATLAS:
+		type_str = "atlas";
+		break;
+	case PLAT_TYPE_NIU:
+		type_str = "niu";
+		break;
+	case PLAT_TYPE_VF_P0:
+		type_str = "vf_p0";
+		break;
+	case PLAT_TYPE_VF_P1:
+		type_str = "vf_p1";
+		break;
+	default:
+		type_str = "unknown";
+		break;
+	}
+
+	return sprintf(buf, "%s\n", type_str);
+}
+
+static ssize_t __show_chan_per_port(struct device *dev,
+				    struct device_attribute *attr, char *buf,
+				    int rx)
+{
+	struct platform_device *plat_dev = to_platform_device(dev);
+	struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
+	char *orig_buf = buf;
+	u8 *arr;
+	int i;
+
+	arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
+
+	for (i = 0; i < p->num_ports; i++) {
+		buf += sprintf(buf,
+			       (i == 0) ? "%d" : " %d",
+			       arr[i]);
+	}
+	buf += sprintf(buf, "\n");
+
+	return buf - orig_buf;
+}
+
+static ssize_t show_rxchan_per_port(struct device *dev,
+				    struct device_attribute *attr, char *buf)
+{
+	return __show_chan_per_port(dev, attr, buf, 1);
+}
+
+static ssize_t show_txchan_per_port(struct device *dev,
+				    struct device_attribute *attr, char *buf)
+{
+	return __show_chan_per_port(dev, attr, buf, 1);
+}
+
+static ssize_t show_num_ports(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	struct platform_device *plat_dev = to_platform_device(dev);
+	struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
+
+	return sprintf(buf, "%d\n", p->num_ports);
+}
+
+static struct device_attribute niu_parent_attributes[] = {
+	__ATTR(port_phy, 0444, show_port_phy, NULL),
+	__ATTR(plat_type, 0444, show_plat_type, NULL),
+	__ATTR(rxchan_per_port, 0444, show_rxchan_per_port, NULL),
+	__ATTR(txchan_per_port, 0444, show_txchan_per_port, NULL),
+	__ATTR(num_ports, 0444, show_num_ports, NULL),
+	{}
+};
+
+static struct niu_parent *niu_new_parent(struct niu *np,
+					 union niu_parent_id *id, u8 ptype)
+{
+	struct platform_device *plat_dev;
+	struct niu_parent *p;
+	int i;
+
+	plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
+						   NULL, 0);
+	if (IS_ERR(plat_dev))
+		return NULL;
+
+	for (i = 0; niu_parent_attributes[i].attr.name; i++) {
+		int err = device_create_file(&plat_dev->dev,
+					     &niu_parent_attributes[i]);
+		if (err)
+			goto fail_unregister;
+	}
+
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
+	if (!p)
+		goto fail_unregister;
+
+	p->index = niu_parent_index++;
+
+	plat_dev->dev.platform_data = p;
+	p->plat_dev = plat_dev;
+
+	memcpy(&p->id, id, sizeof(*id));
+	p->plat_type = ptype;
+	INIT_LIST_HEAD(&p->list);
+	atomic_set(&p->refcnt, 0);
+	list_add(&p->list, &niu_parent_list);
+	spin_lock_init(&p->lock);
+
+	p->rxdma_clock_divider = 7500;
+
+	p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
+	if (p->plat_type == PLAT_TYPE_NIU)
+		p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
+
+	for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
+		int index = i - CLASS_CODE_USER_PROG1;
+
+		p->tcam_key[index] = TCAM_KEY_TSEL;
+		p->flow_key[index] = (FLOW_KEY_IPSA |
+				      FLOW_KEY_IPDA |
+				      FLOW_KEY_PROTO |
+				      (FLOW_KEY_L4_BYTE12 <<
+				       FLOW_KEY_L4_0_SHIFT) |
+				      (FLOW_KEY_L4_BYTE12 <<
+				       FLOW_KEY_L4_1_SHIFT));
+	}
+
+	for (i = 0; i < LDN_MAX + 1; i++)
+		p->ldg_map[i] = LDG_INVALID;
+
+	return p;
+
+fail_unregister:
+	platform_device_unregister(plat_dev);
+	return NULL;
+}
+
+static struct niu_parent *niu_get_parent(struct niu *np,
+					 union niu_parent_id *id, u8 ptype)
+{
+	struct niu_parent *p, *tmp;
+	int port = np->port;
+
+	mutex_lock(&niu_parent_lock);
+	p = NULL;
+	list_for_each_entry(tmp, &niu_parent_list, list) {
+		if (!memcmp(id, &tmp->id, sizeof(*id))) {
+			p = tmp;
+			break;
+		}
+	}
+	if (!p)
+		p = niu_new_parent(np, id, ptype);
+
+	if (p) {
+		char port_name[8];
+		int err;
+
+		sprintf(port_name, "port%d", port);
+		err = sysfs_create_link(&p->plat_dev->dev.kobj,
+					&np->device->kobj,
+					port_name);
+		if (!err) {
+			p->ports[port] = np;
+			atomic_inc(&p->refcnt);
+		}
+	}
+	mutex_unlock(&niu_parent_lock);
+
+	return p;
+}
+
+static void niu_put_parent(struct niu *np)
+{
+	struct niu_parent *p = np->parent;
+	u8 port = np->port;
+	char port_name[8];
+
+	BUG_ON(!p || p->ports[port] != np);
+
+	netif_printk(np, probe, KERN_DEBUG, np->dev,
+		     "%s() port[%u]\n", __func__, port);
+
+	sprintf(port_name, "port%d", port);
+
+	mutex_lock(&niu_parent_lock);
+
+	sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
+
+	p->ports[port] = NULL;
+	np->parent = NULL;
+
+	if (atomic_dec_and_test(&p->refcnt)) {
+		list_del(&p->list);
+		platform_device_unregister(p->plat_dev);
+	}
+
+	mutex_unlock(&niu_parent_lock);
+}
+
+static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
+				    u64 *handle, gfp_t flag)
+{
+	dma_addr_t dh;
+	void *ret;
+
+	ret = dma_alloc_coherent(dev, size, &dh, flag);
+	if (ret)
+		*handle = dh;
+	return ret;
+}
+
+static void niu_pci_free_coherent(struct device *dev, size_t size,
+				  void *cpu_addr, u64 handle)
+{
+	dma_free_coherent(dev, size, cpu_addr, handle);
+}
+
+static u64 niu_pci_map_page(struct device *dev, struct page *page,
+			    unsigned long offset, size_t size,
+			    enum dma_data_direction direction)
+{
+	return dma_map_page(dev, page, offset, size, direction);
+}
+
+static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
+			       size_t size, enum dma_data_direction direction)
+{
+	dma_unmap_page(dev, dma_address, size, direction);
+}
+
+static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
+			      size_t size,
+			      enum dma_data_direction direction)
+{
+	return dma_map_single(dev, cpu_addr, size, direction);
+}
+
+static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
+				 size_t size,
+				 enum dma_data_direction direction)
+{
+	dma_unmap_single(dev, dma_address, size, direction);
+}
+
+static const struct niu_ops niu_pci_ops = {
+	.alloc_coherent	= niu_pci_alloc_coherent,
+	.free_coherent	= niu_pci_free_coherent,
+	.map_page	= niu_pci_map_page,
+	.unmap_page	= niu_pci_unmap_page,
+	.map_single	= niu_pci_map_single,
+	.unmap_single	= niu_pci_unmap_single,
+};
+
+static void niu_driver_version(void)
+{
+	static int niu_version_printed;
+
+	if (niu_version_printed++ == 0)
+		pr_info("%s", version);
+}
+
+static struct net_device *niu_alloc_and_init(struct device *gen_dev,
+					     struct pci_dev *pdev,
+					     struct platform_device *op,
+					     const struct niu_ops *ops, u8 port)
+{
+	struct net_device *dev;
+	struct niu *np;
+
+	dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
+	if (!dev)
+		return NULL;
+
+	SET_NETDEV_DEV(dev, gen_dev);
+
+	np = netdev_priv(dev);
+	np->dev = dev;
+	np->pdev = pdev;
+	np->op = op;
+	np->device = gen_dev;
+	np->ops = ops;
+
+	np->msg_enable = niu_debug;
+
+	spin_lock_init(&np->lock);
+	INIT_WORK(&np->reset_task, niu_reset_task);
+
+	np->port = port;
+
+	return dev;
+}
+
+static const struct net_device_ops niu_netdev_ops = {
+	.ndo_open		= niu_open,
+	.ndo_stop		= niu_close,
+	.ndo_start_xmit		= niu_start_xmit,
+	.ndo_get_stats64	= niu_get_stats,
+	.ndo_set_rx_mode	= niu_set_rx_mode,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address	= niu_set_mac_addr,
+	.ndo_do_ioctl		= niu_ioctl,
+	.ndo_tx_timeout		= niu_tx_timeout,
+	.ndo_change_mtu		= niu_change_mtu,
+};
+
+static void niu_assign_netdev_ops(struct net_device *dev)
+{
+	dev->netdev_ops = &niu_netdev_ops;
+	dev->ethtool_ops = &niu_ethtool_ops;
+	dev->watchdog_timeo = NIU_TX_TIMEOUT;
+}
+
+static void niu_device_announce(struct niu *np)
+{
+	struct net_device *dev = np->dev;
+
+	pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
+
+	if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
+		pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
+				dev->name,
+				(np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
+				(np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
+				(np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
+				(np->mac_xcvr == MAC_XCVR_MII ? "MII" :
+				 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
+				np->vpd.phy_type);
+	} else {
+		pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
+				dev->name,
+				(np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
+				(np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
+				(np->flags & NIU_FLAGS_FIBER ? "FIBER" :
+				 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
+				  "COPPER")),
+				(np->mac_xcvr == MAC_XCVR_MII ? "MII" :
+				 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
+				np->vpd.phy_type);
+	}
+}
+
+static void niu_set_basic_features(struct net_device *dev)
+{
+	dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
+	dev->features |= dev->hw_features | NETIF_F_RXCSUM;
+}
+
+static int niu_pci_init_one(struct pci_dev *pdev,
+			    const struct pci_device_id *ent)
+{
+	union niu_parent_id parent_id;
+	struct net_device *dev;
+	struct niu *np;
+	int err;
+	u64 dma_mask;
+
+	niu_driver_version();
+
+	err = pci_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
+		return err;
+	}
+
+	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
+	    !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
+		dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
+		err = -ENODEV;
+		goto err_out_disable_pdev;
+	}
+
+	err = pci_request_regions(pdev, DRV_MODULE_NAME);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
+		goto err_out_disable_pdev;
+	}
+
+	if (!pci_is_pcie(pdev)) {
+		dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
+		err = -ENODEV;
+		goto err_out_free_res;
+	}
+
+	dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
+				 &niu_pci_ops, PCI_FUNC(pdev->devfn));
+	if (!dev) {
+		err = -ENOMEM;
+		goto err_out_free_res;
+	}
+	np = netdev_priv(dev);
+
+	memset(&parent_id, 0, sizeof(parent_id));
+	parent_id.pci.domain = pci_domain_nr(pdev->bus);
+	parent_id.pci.bus = pdev->bus->number;
+	parent_id.pci.device = PCI_SLOT(pdev->devfn);
+
+	np->parent = niu_get_parent(np, &parent_id,
+				    PLAT_TYPE_ATLAS);
+	if (!np->parent) {
+		err = -ENOMEM;
+		goto err_out_free_dev;
+	}
+
+	pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL,
+		PCI_EXP_DEVCTL_NOSNOOP_EN,
+		PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE |
+		PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE |
+		PCI_EXP_DEVCTL_RELAX_EN);
+
+	dma_mask = DMA_BIT_MASK(44);
+	err = pci_set_dma_mask(pdev, dma_mask);
+	if (!err) {
+		dev->features |= NETIF_F_HIGHDMA;
+		err = pci_set_consistent_dma_mask(pdev, dma_mask);
+		if (err) {
+			dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
+			goto err_out_release_parent;
+		}
+	}
+	if (err) {
+		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (err) {
+			dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
+			goto err_out_release_parent;
+		}
+	}
+
+	niu_set_basic_features(dev);
+
+	dev->priv_flags |= IFF_UNICAST_FLT;
+
+	np->regs = pci_ioremap_bar(pdev, 0);
+	if (!np->regs) {
+		dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
+		err = -ENOMEM;
+		goto err_out_release_parent;
+	}
+
+	pci_set_master(pdev);
+	pci_save_state(pdev);
+
+	dev->irq = pdev->irq;
+
+	/* MTU range: 68 - 9216 */
+	dev->min_mtu = ETH_MIN_MTU;
+	dev->max_mtu = NIU_MAX_MTU;
+
+	niu_assign_netdev_ops(dev);
+
+	err = niu_get_invariants(np);
+	if (err) {
+		if (err != -ENODEV)
+			dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
+		goto err_out_iounmap;
+	}
+
+	err = register_netdev(dev);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot register net device, aborting\n");
+		goto err_out_iounmap;
+	}
+
+	pci_set_drvdata(pdev, dev);
+
+	niu_device_announce(np);
+
+	return 0;
+
+err_out_iounmap:
+	if (np->regs) {
+		iounmap(np->regs);
+		np->regs = NULL;
+	}
+
+err_out_release_parent:
+	niu_put_parent(np);
+
+err_out_free_dev:
+	free_netdev(dev);
+
+err_out_free_res:
+	pci_release_regions(pdev);
+
+err_out_disable_pdev:
+	pci_disable_device(pdev);
+
+	return err;
+}
+
+static void niu_pci_remove_one(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+
+	if (dev) {
+		struct niu *np = netdev_priv(dev);
+
+		unregister_netdev(dev);
+		if (np->regs) {
+			iounmap(np->regs);
+			np->regs = NULL;
+		}
+
+		niu_ldg_free(np);
+
+		niu_put_parent(np);
+
+		free_netdev(dev);
+		pci_release_regions(pdev);
+		pci_disable_device(pdev);
+	}
+}
+
+static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct niu *np = netdev_priv(dev);
+	unsigned long flags;
+
+	if (!netif_running(dev))
+		return 0;
+
+	flush_work(&np->reset_task);
+	niu_netif_stop(np);
+
+	del_timer_sync(&np->timer);
+
+	spin_lock_irqsave(&np->lock, flags);
+	niu_enable_interrupts(np, 0);
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	netif_device_detach(dev);
+
+	spin_lock_irqsave(&np->lock, flags);
+	niu_stop_hw(np);
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	pci_save_state(pdev);
+
+	return 0;
+}
+
+static int niu_resume(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct niu *np = netdev_priv(dev);
+	unsigned long flags;
+	int err;
+
+	if (!netif_running(dev))
+		return 0;
+
+	pci_restore_state(pdev);
+
+	netif_device_attach(dev);
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	err = niu_init_hw(np);
+	if (!err) {
+		np->timer.expires = jiffies + HZ;
+		add_timer(&np->timer);
+		niu_netif_start(np);
+	}
+
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	return err;
+}
+
+static struct pci_driver niu_pci_driver = {
+	.name		= DRV_MODULE_NAME,
+	.id_table	= niu_pci_tbl,
+	.probe		= niu_pci_init_one,
+	.remove		= niu_pci_remove_one,
+	.suspend	= niu_suspend,
+	.resume		= niu_resume,
+};
+
+#ifdef CONFIG_SPARC64
+static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
+				     u64 *dma_addr, gfp_t flag)
+{
+	unsigned long order = get_order(size);
+	unsigned long page = __get_free_pages(flag, order);
+
+	if (page == 0UL)
+		return NULL;
+	memset((char *)page, 0, PAGE_SIZE << order);
+	*dma_addr = __pa(page);
+
+	return (void *) page;
+}
+
+static void niu_phys_free_coherent(struct device *dev, size_t size,
+				   void *cpu_addr, u64 handle)
+{
+	unsigned long order = get_order(size);
+
+	free_pages((unsigned long) cpu_addr, order);
+}
+
+static u64 niu_phys_map_page(struct device *dev, struct page *page,
+			     unsigned long offset, size_t size,
+			     enum dma_data_direction direction)
+{
+	return page_to_phys(page) + offset;
+}
+
+static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
+				size_t size, enum dma_data_direction direction)
+{
+	/* Nothing to do.  */
+}
+
+static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
+			       size_t size,
+			       enum dma_data_direction direction)
+{
+	return __pa(cpu_addr);
+}
+
+static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
+				  size_t size,
+				  enum dma_data_direction direction)
+{
+	/* Nothing to do.  */
+}
+
+static const struct niu_ops niu_phys_ops = {
+	.alloc_coherent	= niu_phys_alloc_coherent,
+	.free_coherent	= niu_phys_free_coherent,
+	.map_page	= niu_phys_map_page,
+	.unmap_page	= niu_phys_unmap_page,
+	.map_single	= niu_phys_map_single,
+	.unmap_single	= niu_phys_unmap_single,
+};
+
+static int niu_of_probe(struct platform_device *op)
+{
+	union niu_parent_id parent_id;
+	struct net_device *dev;
+	struct niu *np;
+	const u32 *reg;
+	int err;
+
+	niu_driver_version();
+
+	reg = of_get_property(op->dev.of_node, "reg", NULL);
+	if (!reg) {
+		dev_err(&op->dev, "%pOF: No 'reg' property, aborting\n",
+			op->dev.of_node);
+		return -ENODEV;
+	}
+
+	dev = niu_alloc_and_init(&op->dev, NULL, op,
+				 &niu_phys_ops, reg[0] & 0x1);
+	if (!dev) {
+		err = -ENOMEM;
+		goto err_out;
+	}
+	np = netdev_priv(dev);
+
+	memset(&parent_id, 0, sizeof(parent_id));
+	parent_id.of = of_get_parent(op->dev.of_node);
+
+	np->parent = niu_get_parent(np, &parent_id,
+				    PLAT_TYPE_NIU);
+	if (!np->parent) {
+		err = -ENOMEM;
+		goto err_out_free_dev;
+	}
+
+	niu_set_basic_features(dev);
+
+	np->regs = of_ioremap(&op->resource[1], 0,
+			      resource_size(&op->resource[1]),
+			      "niu regs");
+	if (!np->regs) {
+		dev_err(&op->dev, "Cannot map device registers, aborting\n");
+		err = -ENOMEM;
+		goto err_out_release_parent;
+	}
+
+	np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
+				    resource_size(&op->resource[2]),
+				    "niu vregs-1");
+	if (!np->vir_regs_1) {
+		dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
+		err = -ENOMEM;
+		goto err_out_iounmap;
+	}
+
+	np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
+				    resource_size(&op->resource[3]),
+				    "niu vregs-2");
+	if (!np->vir_regs_2) {
+		dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
+		err = -ENOMEM;
+		goto err_out_iounmap;
+	}
+
+	niu_assign_netdev_ops(dev);
+
+	err = niu_get_invariants(np);
+	if (err) {
+		if (err != -ENODEV)
+			dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
+		goto err_out_iounmap;
+	}
+
+	err = register_netdev(dev);
+	if (err) {
+		dev_err(&op->dev, "Cannot register net device, aborting\n");
+		goto err_out_iounmap;
+	}
+
+	platform_set_drvdata(op, dev);
+
+	niu_device_announce(np);
+
+	return 0;
+
+err_out_iounmap:
+	if (np->vir_regs_1) {
+		of_iounmap(&op->resource[2], np->vir_regs_1,
+			   resource_size(&op->resource[2]));
+		np->vir_regs_1 = NULL;
+	}
+
+	if (np->vir_regs_2) {
+		of_iounmap(&op->resource[3], np->vir_regs_2,
+			   resource_size(&op->resource[3]));
+		np->vir_regs_2 = NULL;
+	}
+
+	if (np->regs) {
+		of_iounmap(&op->resource[1], np->regs,
+			   resource_size(&op->resource[1]));
+		np->regs = NULL;
+	}
+
+err_out_release_parent:
+	niu_put_parent(np);
+
+err_out_free_dev:
+	free_netdev(dev);
+
+err_out:
+	return err;
+}
+
+static int niu_of_remove(struct platform_device *op)
+{
+	struct net_device *dev = platform_get_drvdata(op);
+
+	if (dev) {
+		struct niu *np = netdev_priv(dev);
+
+		unregister_netdev(dev);
+
+		if (np->vir_regs_1) {
+			of_iounmap(&op->resource[2], np->vir_regs_1,
+				   resource_size(&op->resource[2]));
+			np->vir_regs_1 = NULL;
+		}
+
+		if (np->vir_regs_2) {
+			of_iounmap(&op->resource[3], np->vir_regs_2,
+				   resource_size(&op->resource[3]));
+			np->vir_regs_2 = NULL;
+		}
+
+		if (np->regs) {
+			of_iounmap(&op->resource[1], np->regs,
+				   resource_size(&op->resource[1]));
+			np->regs = NULL;
+		}
+
+		niu_ldg_free(np);
+
+		niu_put_parent(np);
+
+		free_netdev(dev);
+	}
+	return 0;
+}
+
+static const struct of_device_id niu_match[] = {
+	{
+		.name = "network",
+		.compatible = "SUNW,niusl",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, niu_match);
+
+static struct platform_driver niu_of_driver = {
+	.driver = {
+		.name = "niu",
+		.of_match_table = niu_match,
+	},
+	.probe		= niu_of_probe,
+	.remove		= niu_of_remove,
+};
+
+#endif /* CONFIG_SPARC64 */
+
+static int __init niu_init(void)
+{
+	int err = 0;
+
+	BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
+
+	niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
+
+#ifdef CONFIG_SPARC64
+	err = platform_driver_register(&niu_of_driver);
+#endif
+
+	if (!err) {
+		err = pci_register_driver(&niu_pci_driver);
+#ifdef CONFIG_SPARC64
+		if (err)
+			platform_driver_unregister(&niu_of_driver);
+#endif
+	}
+
+	return err;
+}
+
+static void __exit niu_exit(void)
+{
+	pci_unregister_driver(&niu_pci_driver);
+#ifdef CONFIG_SPARC64
+	platform_driver_unregister(&niu_of_driver);
+#endif
+}
+
+module_init(niu_init);
+module_exit(niu_exit);
diff --git a/drivers/net/ethernet/sun/niu.h b/drivers/net/ethernet/sun/niu.h
new file mode 100644
index 000000000..04c215f91
--- /dev/null
+++ b/drivers/net/ethernet/sun/niu.h
@@ -0,0 +1,3307 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* niu.h: Definitions for Neptune ethernet driver.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#ifndef _NIU_H
+#define _NIU_H
+
+#define PIO			0x000000UL
+#define FZC_PIO			0x080000UL
+#define FZC_MAC			0x180000UL
+#define FZC_IPP			0x280000UL
+#define FFLP			0x300000UL
+#define FZC_FFLP		0x380000UL
+#define PIO_VADDR		0x400000UL
+#define ZCP			0x500000UL
+#define FZC_ZCP			0x580000UL
+#define DMC			0x600000UL
+#define FZC_DMC			0x680000UL
+#define TXC			0x700000UL
+#define FZC_TXC			0x780000UL
+#define PIO_LDSV		0x800000UL
+#define PIO_PIO_LDGIM		0x900000UL
+#define PIO_IMASK0		0xa00000UL
+#define PIO_IMASK1		0xb00000UL
+#define FZC_PROM		0xc80000UL
+#define FZC_PIM			0xd80000UL
+
+#define LDSV0(LDG)		(PIO_LDSV + 0x00000UL + (LDG) * 0x2000UL)
+#define LDSV1(LDG)		(PIO_LDSV + 0x00008UL + (LDG) * 0x2000UL)
+#define LDSV2(LDG)		(PIO_LDSV + 0x00010UL + (LDG) * 0x2000UL)
+
+#define LDG_IMGMT(LDG)		(PIO_LDSV + 0x00018UL + (LDG) * 0x2000UL)
+#define  LDG_IMGMT_ARM		0x0000000080000000ULL
+#define  LDG_IMGMT_TIMER	0x000000000000003fULL
+
+#define LD_IM0(IDX)		(PIO_IMASK0 + 0x00000UL + (IDX) * 0x2000UL)
+#define  LD_IM0_MASK		0x0000000000000003ULL
+
+#define LD_IM1(IDX)		(PIO_IMASK1 + 0x00000UL + (IDX) * 0x2000UL)
+#define  LD_IM1_MASK		0x0000000000000003ULL
+
+#define LDG_TIMER_RES		(FZC_PIO + 0x00008UL)
+#define  LDG_TIMER_RES_VAL	0x00000000000fffffULL
+
+#define DIRTY_TID_CTL		(FZC_PIO + 0x00010UL)
+#define  DIRTY_TID_CTL_NPTHRED	0x00000000003f0000ULL
+#define  DIRTY_TID_CTL_RDTHRED	0x00000000000003f0ULL
+#define  DIRTY_TID_CTL_DTIDCLR	0x0000000000000002ULL
+#define  DIRTY_TID_CTL_DTIDENAB	0x0000000000000001ULL
+
+#define DIRTY_TID_STAT		(FZC_PIO + 0x00018UL)
+#define  DIRTY_TID_STAT_NPWSTAT	0x0000000000003f00ULL
+#define  DIRTY_TID_STAT_RDSTAT	0x000000000000003fULL
+
+#define RST_CTL			(FZC_PIO + 0x00038UL)
+#define  RST_CTL_MAC_RST3	0x0000000000400000ULL
+#define  RST_CTL_MAC_RST2	0x0000000000200000ULL
+#define  RST_CTL_MAC_RST1	0x0000000000100000ULL
+#define  RST_CTL_MAC_RST0	0x0000000000080000ULL
+#define  RST_CTL_ACK_TO_EN	0x0000000000000800ULL
+#define  RST_CTL_ACK_TO_VAL	0x00000000000007feULL
+
+#define SMX_CFIG_DAT		(FZC_PIO + 0x00040UL)
+#define  SMX_CFIG_DAT_RAS_DET	0x0000000080000000ULL
+#define  SMX_CFIG_DAT_RAS_INJ	0x0000000040000000ULL
+#define  SMX_CFIG_DAT_XACT_TO	0x000000000fffffffULL
+
+#define SMX_INT_STAT		(FZC_PIO + 0x00048UL)
+#define  SMX_INT_STAT_STAT	0x00000000ffffffffULL
+
+#define SMX_CTL			(FZC_PIO + 0x00050UL)
+#define  SMX_CTL_CTL		0x00000000ffffffffULL
+
+#define SMX_DBG_VEC		(FZC_PIO + 0x00058UL)
+#define  SMX_DBG_VEC_VEC	0x00000000ffffffffULL
+
+#define PIO_DBG_SEL		(FZC_PIO + 0x00060UL)
+#define  PIO_DBG_SEL_SEL	0x000000000000003fULL
+
+#define PIO_TRAIN_VEC		(FZC_PIO + 0x00068UL)
+#define  PIO_TRAIN_VEC_VEC	0x00000000ffffffffULL
+
+#define PIO_ARB_CTL		(FZC_PIO + 0x00070UL)
+#define  PIO_ARB_CTL_CTL	0x00000000ffffffffULL
+
+#define PIO_ARB_DBG_VEC		(FZC_PIO + 0x00078UL)
+#define  PIO_ARB_DBG_VEC_VEC	0x00000000ffffffffULL
+
+#define SYS_ERR_MASK		(FZC_PIO + 0x00090UL)
+#define  SYS_ERR_MASK_META2	0x0000000000000400ULL
+#define  SYS_ERR_MASK_META1	0x0000000000000200ULL
+#define  SYS_ERR_MASK_PEU	0x0000000000000100ULL
+#define  SYS_ERR_MASK_TXC	0x0000000000000080ULL
+#define  SYS_ERR_MASK_RDMC	0x0000000000000040ULL
+#define  SYS_ERR_MASK_TDMC	0x0000000000000020ULL
+#define  SYS_ERR_MASK_ZCP	0x0000000000000010ULL
+#define  SYS_ERR_MASK_FFLP	0x0000000000000008ULL
+#define  SYS_ERR_MASK_IPP	0x0000000000000004ULL
+#define  SYS_ERR_MASK_MAC	0x0000000000000002ULL
+#define  SYS_ERR_MASK_SMX	0x0000000000000001ULL
+
+#define SYS_ERR_STAT			(FZC_PIO + 0x00098UL)
+#define  SYS_ERR_STAT_META2		0x0000000000000400ULL
+#define  SYS_ERR_STAT_META1		0x0000000000000200ULL
+#define  SYS_ERR_STAT_PEU		0x0000000000000100ULL
+#define  SYS_ERR_STAT_TXC		0x0000000000000080ULL
+#define  SYS_ERR_STAT_RDMC		0x0000000000000040ULL
+#define  SYS_ERR_STAT_TDMC		0x0000000000000020ULL
+#define  SYS_ERR_STAT_ZCP		0x0000000000000010ULL
+#define  SYS_ERR_STAT_FFLP		0x0000000000000008ULL
+#define  SYS_ERR_STAT_IPP		0x0000000000000004ULL
+#define  SYS_ERR_STAT_MAC		0x0000000000000002ULL
+#define  SYS_ERR_STAT_SMX		0x0000000000000001ULL
+
+#define SID(LDG)			(FZC_PIO + 0x10200UL + (LDG) * 8UL)
+#define  SID_FUNC			0x0000000000000060ULL
+#define  SID_FUNC_SHIFT			5
+#define  SID_VECTOR			0x000000000000001fULL
+#define  SID_VECTOR_SHIFT		0
+
+#define LDG_NUM(LDN)			(FZC_PIO + 0x20000UL + (LDN) * 8UL)
+
+#define XMAC_PORT0_OFF			(FZC_MAC + 0x000000)
+#define XMAC_PORT1_OFF			(FZC_MAC + 0x006000)
+#define BMAC_PORT2_OFF			(FZC_MAC + 0x00c000)
+#define BMAC_PORT3_OFF			(FZC_MAC + 0x010000)
+
+/* XMAC registers, offset from np->mac_regs  */
+
+#define XTXMAC_SW_RST			0x00000UL
+#define  XTXMAC_SW_RST_REG_RS		0x0000000000000002ULL
+#define  XTXMAC_SW_RST_SOFT_RST		0x0000000000000001ULL
+
+#define XRXMAC_SW_RST			0x00008UL
+#define  XRXMAC_SW_RST_REG_RS		0x0000000000000002ULL
+#define  XRXMAC_SW_RST_SOFT_RST		0x0000000000000001ULL
+
+#define XTXMAC_STATUS			0x00020UL
+#define  XTXMAC_STATUS_FRAME_CNT_EXP	0x0000000000000800ULL
+#define  XTXMAC_STATUS_BYTE_CNT_EXP	0x0000000000000400ULL
+#define  XTXMAC_STATUS_TXFIFO_XFR_ERR	0x0000000000000010ULL
+#define  XTXMAC_STATUS_TXMAC_OFLOW	0x0000000000000008ULL
+#define  XTXMAC_STATUS_MAX_PSIZE_ERR	0x0000000000000004ULL
+#define  XTXMAC_STATUS_TXMAC_UFLOW	0x0000000000000002ULL
+#define  XTXMAC_STATUS_FRAME_XMITED	0x0000000000000001ULL
+
+#define XRXMAC_STATUS			0x00028UL
+#define  XRXMAC_STATUS_RXHIST7_CNT_EXP	0x0000000000100000ULL
+#define  XRXMAC_STATUS_LCL_FLT_STATUS	0x0000000000080000ULL
+#define  XRXMAC_STATUS_RFLT_DET		0x0000000000040000ULL
+#define  XRXMAC_STATUS_LFLT_CNT_EXP	0x0000000000020000ULL
+#define  XRXMAC_STATUS_PHY_MDINT	0x0000000000010000ULL
+#define  XRXMAC_STATUS_ALIGNERR_CNT_EXP	0x0000000000010000ULL
+#define  XRXMAC_STATUS_RXFRAG_CNT_EXP	0x0000000000008000ULL
+#define  XRXMAC_STATUS_RXMULTF_CNT_EXP	0x0000000000004000ULL
+#define  XRXMAC_STATUS_RXBCAST_CNT_EXP	0x0000000000002000ULL
+#define  XRXMAC_STATUS_RXHIST6_CNT_EXP	0x0000000000001000ULL
+#define  XRXMAC_STATUS_RXHIST5_CNT_EXP	0x0000000000000800ULL
+#define  XRXMAC_STATUS_RXHIST4_CNT_EXP	0x0000000000000400ULL
+#define  XRXMAC_STATUS_RXHIST3_CNT_EXP	0x0000000000000200ULL
+#define  XRXMAC_STATUS_RXHIST2_CNT_EXP	0x0000000000000100ULL
+#define  XRXMAC_STATUS_RXHIST1_CNT_EXP	0x0000000000000080ULL
+#define  XRXMAC_STATUS_RXOCTET_CNT_EXP	0x0000000000000040ULL
+#define  XRXMAC_STATUS_CVIOLERR_CNT_EXP	0x0000000000000020ULL
+#define  XRXMAC_STATUS_LENERR_CNT_EXP	0x0000000000000010ULL
+#define  XRXMAC_STATUS_CRCERR_CNT_EXP	0x0000000000000008ULL
+#define  XRXMAC_STATUS_RXUFLOW		0x0000000000000004ULL
+#define  XRXMAC_STATUS_RXOFLOW		0x0000000000000002ULL
+#define  XRXMAC_STATUS_FRAME_RCVD	0x0000000000000001ULL
+
+#define XMAC_FC_STAT			0x00030UL
+#define  XMAC_FC_STAT_RX_RCV_PAUSE_TIME	0x00000000ffff0000ULL
+#define  XMAC_FC_STAT_TX_MAC_NPAUSE	0x0000000000000004ULL
+#define  XMAC_FC_STAT_TX_MAC_PAUSE	0x0000000000000002ULL
+#define  XMAC_FC_STAT_RX_MAC_RPAUSE	0x0000000000000001ULL
+
+#define XTXMAC_STAT_MSK			0x00040UL
+#define  XTXMAC_STAT_MSK_FRAME_CNT_EXP	0x0000000000000800ULL
+#define  XTXMAC_STAT_MSK_BYTE_CNT_EXP	0x0000000000000400ULL
+#define  XTXMAC_STAT_MSK_TXFIFO_XFR_ERR	0x0000000000000010ULL
+#define  XTXMAC_STAT_MSK_TXMAC_OFLOW	0x0000000000000008ULL
+#define  XTXMAC_STAT_MSK_MAX_PSIZE_ERR	0x0000000000000004ULL
+#define  XTXMAC_STAT_MSK_TXMAC_UFLOW	0x0000000000000002ULL
+#define  XTXMAC_STAT_MSK_FRAME_XMITED	0x0000000000000001ULL
+
+#define XRXMAC_STAT_MSK				0x00048UL
+#define  XRXMAC_STAT_MSK_LCL_FLT_STAT_MSK	0x0000000000080000ULL
+#define  XRXMAC_STAT_MSK_RFLT_DET		0x0000000000040000ULL
+#define  XRXMAC_STAT_MSK_LFLT_CNT_EXP		0x0000000000020000ULL
+#define  XRXMAC_STAT_MSK_PHY_MDINT		0x0000000000010000ULL
+#define  XRXMAC_STAT_MSK_RXFRAG_CNT_EXP		0x0000000000008000ULL
+#define  XRXMAC_STAT_MSK_RXMULTF_CNT_EXP	0x0000000000004000ULL
+#define  XRXMAC_STAT_MSK_RXBCAST_CNT_EXP	0x0000000000002000ULL
+#define  XRXMAC_STAT_MSK_RXHIST6_CNT_EXP	0x0000000000001000ULL
+#define  XRXMAC_STAT_MSK_RXHIST5_CNT_EXP	0x0000000000000800ULL
+#define  XRXMAC_STAT_MSK_RXHIST4_CNT_EXP	0x0000000000000400ULL
+#define  XRXMAC_STAT_MSK_RXHIST3_CNT_EXP	0x0000000000000200ULL
+#define  XRXMAC_STAT_MSK_RXHIST2_CNT_EXP	0x0000000000000100ULL
+#define  XRXMAC_STAT_MSK_RXHIST1_CNT_EXP	0x0000000000000080ULL
+#define  XRXMAC_STAT_MSK_RXOCTET_CNT_EXP	0x0000000000000040ULL
+#define  XRXMAC_STAT_MSK_CVIOLERR_CNT_EXP	0x0000000000000020ULL
+#define  XRXMAC_STAT_MSK_LENERR_CNT_EXP		0x0000000000000010ULL
+#define  XRXMAC_STAT_MSK_CRCERR_CNT_EXP		0x0000000000000008ULL
+#define  XRXMAC_STAT_MSK_RXUFLOW_CNT_EXP	0x0000000000000004ULL
+#define  XRXMAC_STAT_MSK_RXOFLOW_CNT_EXP	0x0000000000000002ULL
+#define  XRXMAC_STAT_MSK_FRAME_RCVD		0x0000000000000001ULL
+
+#define XMAC_FC_MSK			0x00050UL
+#define  XMAC_FC_MSK_TX_MAC_NPAUSE	0x0000000000000004ULL
+#define  XMAC_FC_MSK_TX_MAC_PAUSE	0x0000000000000002ULL
+#define  XMAC_FC_MSK_RX_MAC_RPAUSE	0x0000000000000001ULL
+
+#define XMAC_CONFIG			0x00060UL
+#define  XMAC_CONFIG_SEL_CLK_25MHZ	0x0000000080000000ULL
+#define  XMAC_CONFIG_1G_PCS_BYPASS	0x0000000040000000ULL
+#define  XMAC_CONFIG_10G_XPCS_BYPASS	0x0000000020000000ULL
+#define  XMAC_CONFIG_MODE_MASK		0x0000000018000000ULL
+#define  XMAC_CONFIG_MODE_XGMII		0x0000000000000000ULL
+#define  XMAC_CONFIG_MODE_GMII		0x0000000008000000ULL
+#define  XMAC_CONFIG_MODE_MII		0x0000000010000000ULL
+#define  XMAC_CONFIG_LFS_DISABLE	0x0000000004000000ULL
+#define  XMAC_CONFIG_LOOPBACK		0x0000000002000000ULL
+#define  XMAC_CONFIG_TX_OUTPUT_EN	0x0000000001000000ULL
+#define  XMAC_CONFIG_SEL_POR_CLK_SRC	0x0000000000800000ULL
+#define  XMAC_CONFIG_LED_POLARITY	0x0000000000400000ULL
+#define  XMAC_CONFIG_FORCE_LED_ON	0x0000000000200000ULL
+#define  XMAC_CONFIG_PASS_FLOW_CTRL	0x0000000000100000ULL
+#define  XMAC_CONFIG_RCV_PAUSE_ENABLE	0x0000000000080000ULL
+#define  XMAC_CONFIG_MAC2IPP_PKT_CNT_EN	0x0000000000040000ULL
+#define  XMAC_CONFIG_STRIP_CRC		0x0000000000020000ULL
+#define  XMAC_CONFIG_ADDR_FILTER_EN	0x0000000000010000ULL
+#define  XMAC_CONFIG_HASH_FILTER_EN	0x0000000000008000ULL
+#define  XMAC_CONFIG_RX_CODEV_CHK_DIS	0x0000000000004000ULL
+#define  XMAC_CONFIG_RESERVED_MULTICAST	0x0000000000002000ULL
+#define  XMAC_CONFIG_RX_CRC_CHK_DIS	0x0000000000001000ULL
+#define  XMAC_CONFIG_ERR_CHK_DIS	0x0000000000000800ULL
+#define  XMAC_CONFIG_PROMISC_GROUP	0x0000000000000400ULL
+#define  XMAC_CONFIG_PROMISCUOUS	0x0000000000000200ULL
+#define  XMAC_CONFIG_RX_MAC_ENABLE	0x0000000000000100ULL
+#define  XMAC_CONFIG_WARNING_MSG_EN	0x0000000000000080ULL
+#define  XMAC_CONFIG_ALWAYS_NO_CRC	0x0000000000000008ULL
+#define  XMAC_CONFIG_VAR_MIN_IPG_EN	0x0000000000000004ULL
+#define  XMAC_CONFIG_STRETCH_MODE	0x0000000000000002ULL
+#define  XMAC_CONFIG_TX_ENABLE		0x0000000000000001ULL
+
+#define XMAC_IPG			0x00080UL
+#define  XMAC_IPG_STRETCH_CONST		0x0000000000e00000ULL
+#define  XMAC_IPG_STRETCH_CONST_SHIFT	21
+#define  XMAC_IPG_STRETCH_RATIO		0x00000000001f0000ULL
+#define  XMAC_IPG_STRETCH_RATIO_SHIFT	16
+#define  XMAC_IPG_IPG_MII_GMII		0x000000000000ff00ULL
+#define  XMAC_IPG_IPG_MII_GMII_SHIFT	8
+#define  XMAC_IPG_IPG_XGMII		0x0000000000000007ULL
+#define  XMAC_IPG_IPG_XGMII_SHIFT	0
+
+#define IPG_12_15_XGMII			3
+#define IPG_16_19_XGMII			4
+#define IPG_20_23_XGMII			5
+#define IPG_12_MII_GMII			10
+#define IPG_13_MII_GMII			11
+#define IPG_14_MII_GMII			12
+#define IPG_15_MII_GMII			13
+#define IPG_16_MII_GMII			14
+
+#define XMAC_MIN			0x00088UL
+#define  XMAC_MIN_RX_MIN_PKT_SIZE	0x000000003ff00000ULL
+#define  XMAC_MIN_RX_MIN_PKT_SIZE_SHFT	20
+#define  XMAC_MIN_SLOT_TIME		0x000000000003fc00ULL
+#define  XMAC_MIN_SLOT_TIME_SHFT	10
+#define  XMAC_MIN_TX_MIN_PKT_SIZE	0x00000000000003ffULL
+#define  XMAC_MIN_TX_MIN_PKT_SIZE_SHFT	0
+
+#define XMAC_MAX			0x00090UL
+#define  XMAC_MAX_FRAME_SIZE		0x0000000000003fffULL
+#define  XMAC_MAX_FRAME_SIZE_SHFT	0
+
+#define XMAC_ADDR0			0x000a0UL
+#define  XMAC_ADDR0_ADDR0		0x000000000000ffffULL
+
+#define XMAC_ADDR1			0x000a8UL
+#define  XMAC_ADDR1_ADDR1		0x000000000000ffffULL
+
+#define XMAC_ADDR2			0x000b0UL
+#define  XMAC_ADDR2_ADDR2		0x000000000000ffffULL
+
+#define XMAC_ADDR_CMPEN			0x00208UL
+#define  XMAC_ADDR_CMPEN_EN15		0x0000000000008000ULL
+#define  XMAC_ADDR_CMPEN_EN14		0x0000000000004000ULL
+#define  XMAC_ADDR_CMPEN_EN13		0x0000000000002000ULL
+#define  XMAC_ADDR_CMPEN_EN12		0x0000000000001000ULL
+#define  XMAC_ADDR_CMPEN_EN11		0x0000000000000800ULL
+#define  XMAC_ADDR_CMPEN_EN10		0x0000000000000400ULL
+#define  XMAC_ADDR_CMPEN_EN9		0x0000000000000200ULL
+#define  XMAC_ADDR_CMPEN_EN8		0x0000000000000100ULL
+#define  XMAC_ADDR_CMPEN_EN7		0x0000000000000080ULL
+#define  XMAC_ADDR_CMPEN_EN6		0x0000000000000040ULL
+#define  XMAC_ADDR_CMPEN_EN5		0x0000000000000020ULL
+#define  XMAC_ADDR_CMPEN_EN4		0x0000000000000010ULL
+#define  XMAC_ADDR_CMPEN_EN3		0x0000000000000008ULL
+#define  XMAC_ADDR_CMPEN_EN2		0x0000000000000004ULL
+#define  XMAC_ADDR_CMPEN_EN1		0x0000000000000002ULL
+#define  XMAC_ADDR_CMPEN_EN0		0x0000000000000001ULL
+
+#define XMAC_NUM_ALT_ADDR		16
+
+#define XMAC_ALT_ADDR0(NUM)		(0x00218UL + (NUM)*0x18UL)
+#define  XMAC_ALT_ADDR0_ADDR0		0x000000000000ffffULL
+
+#define XMAC_ALT_ADDR1(NUM)		(0x00220UL + (NUM)*0x18UL)
+#define  XMAC_ALT_ADDR1_ADDR1		0x000000000000ffffULL
+
+#define XMAC_ALT_ADDR2(NUM)		(0x00228UL + (NUM)*0x18UL)
+#define  XMAC_ALT_ADDR2_ADDR2		0x000000000000ffffULL
+
+#define XMAC_ADD_FILT0			0x00818UL
+#define  XMAC_ADD_FILT0_FILT0		0x000000000000ffffULL
+
+#define XMAC_ADD_FILT1			0x00820UL
+#define  XMAC_ADD_FILT1_FILT1		0x000000000000ffffULL
+
+#define XMAC_ADD_FILT2			0x00828UL
+#define  XMAC_ADD_FILT2_FILT2		0x000000000000ffffULL
+
+#define XMAC_ADD_FILT12_MASK		0x00830UL
+#define  XMAC_ADD_FILT12_MASK_VAL	0x00000000000000ffULL
+
+#define XMAC_ADD_FILT00_MASK		0x00838UL
+#define  XMAC_ADD_FILT00_MASK_VAL	0x000000000000ffffULL
+
+#define XMAC_HASH_TBL(NUM)		(0x00840UL + (NUM) * 0x8UL)
+#define XMAC_HASH_TBL_VAL		0x000000000000ffffULL
+
+#define XMAC_NUM_HOST_INFO		20
+
+#define XMAC_HOST_INFO(NUM)		(0x00900UL + (NUM) * 0x8UL)
+
+#define XMAC_PA_DATA0			0x00b80UL
+#define XMAC_PA_DATA0_VAL		0x00000000ffffffffULL
+
+#define XMAC_PA_DATA1			0x00b88UL
+#define XMAC_PA_DATA1_VAL		0x00000000ffffffffULL
+
+#define XMAC_DEBUG_SEL			0x00b90UL
+#define  XMAC_DEBUG_SEL_XMAC		0x0000000000000078ULL
+#define  XMAC_DEBUG_SEL_MAC		0x0000000000000007ULL
+
+#define XMAC_TRAIN_VEC			0x00b98UL
+#define  XMAC_TRAIN_VEC_VAL		0x00000000ffffffffULL
+
+#define RXMAC_BT_CNT			0x00100UL
+#define  RXMAC_BT_CNT_COUNT		0x00000000ffffffffULL
+
+#define RXMAC_BC_FRM_CNT		0x00108UL
+#define  RXMAC_BC_FRM_CNT_COUNT		0x00000000001fffffULL
+
+#define RXMAC_MC_FRM_CNT		0x00110UL
+#define  RXMAC_MC_FRM_CNT_COUNT		0x00000000001fffffULL
+
+#define RXMAC_FRAG_CNT			0x00118UL
+#define  RXMAC_FRAG_CNT_COUNT		0x00000000001fffffULL
+
+#define RXMAC_HIST_CNT1			0x00120UL
+#define  RXMAC_HIST_CNT1_COUNT		0x00000000001fffffULL
+
+#define RXMAC_HIST_CNT2			0x00128UL
+#define  RXMAC_HIST_CNT2_COUNT		0x00000000001fffffULL
+
+#define RXMAC_HIST_CNT3			0x00130UL
+#define  RXMAC_HIST_CNT3_COUNT		0x00000000000fffffULL
+
+#define RXMAC_HIST_CNT4			0x00138UL
+#define  RXMAC_HIST_CNT4_COUNT		0x000000000007ffffULL
+
+#define RXMAC_HIST_CNT5			0x00140UL
+#define  RXMAC_HIST_CNT5_COUNT		0x000000000003ffffULL
+
+#define RXMAC_HIST_CNT6			0x00148UL
+#define  RXMAC_HIST_CNT6_COUNT		0x000000000000ffffULL
+
+#define RXMAC_MPSZER_CNT		0x00150UL
+#define  RXMAC_MPSZER_CNT_COUNT		0x00000000000000ffULL
+
+#define RXMAC_CRC_ER_CNT		0x00158UL
+#define  RXMAC_CRC_ER_CNT_COUNT		0x00000000000000ffULL
+
+#define RXMAC_CD_VIO_CNT		0x00160UL
+#define  RXMAC_CD_VIO_CNT_COUNT		0x00000000000000ffULL
+
+#define RXMAC_ALIGN_ERR_CNT		0x00168UL
+#define  RXMAC_ALIGN_ERR_CNT_COUNT	0x00000000000000ffULL
+
+#define TXMAC_FRM_CNT			0x00170UL
+#define  TXMAC_FRM_CNT_COUNT		0x00000000ffffffffULL
+
+#define TXMAC_BYTE_CNT			0x00178UL
+#define  TXMAC_BYTE_CNT_COUNT		0x00000000ffffffffULL
+
+#define LINK_FAULT_CNT			0x00180UL
+#define  LINK_FAULT_CNT_COUNT		0x00000000000000ffULL
+
+#define RXMAC_HIST_CNT7			0x00188UL
+#define  RXMAC_HIST_CNT7_COUNT		0x0000000007ffffffULL
+
+#define XMAC_SM_REG			0x001a8UL
+#define  XMAC_SM_REG_STATE		0x00000000ffffffffULL
+
+#define XMAC_INTER1			0x001b0UL
+#define  XMAC_INTERN1_SIGNALS1		0x00000000ffffffffULL
+
+#define XMAC_INTER2			0x001b8UL
+#define  XMAC_INTERN2_SIGNALS2		0x00000000ffffffffULL
+
+/* BMAC registers, offset from np->mac_regs  */
+
+#define BTXMAC_SW_RST			0x00000UL
+#define  BTXMAC_SW_RST_RESET		0x0000000000000001ULL
+
+#define BRXMAC_SW_RST			0x00008UL
+#define  BRXMAC_SW_RST_RESET		0x0000000000000001ULL
+
+#define BMAC_SEND_PAUSE			0x00010UL
+#define  BMAC_SEND_PAUSE_SEND		0x0000000000010000ULL
+#define  BMAC_SEND_PAUSE_TIME		0x000000000000ffffULL
+
+#define BTXMAC_STATUS			0x00020UL
+#define  BTXMAC_STATUS_XMIT		0x0000000000000001ULL
+#define  BTXMAC_STATUS_UNDERRUN		0x0000000000000002ULL
+#define  BTXMAC_STATUS_MAX_PKT_ERR	0x0000000000000004ULL
+#define  BTXMAC_STATUS_BYTE_CNT_EXP	0x0000000000000400ULL
+#define  BTXMAC_STATUS_FRAME_CNT_EXP	0x0000000000000800ULL
+
+#define BRXMAC_STATUS			0x00028UL
+#define  BRXMAC_STATUS_RX_PKT		0x0000000000000001ULL
+#define  BRXMAC_STATUS_OVERFLOW		0x0000000000000002ULL
+#define  BRXMAC_STATUS_FRAME_CNT_EXP	0x0000000000000004ULL
+#define  BRXMAC_STATUS_ALIGN_ERR_EXP	0x0000000000000008ULL
+#define  BRXMAC_STATUS_CRC_ERR_EXP	0x0000000000000010ULL
+#define  BRXMAC_STATUS_LEN_ERR_EXP	0x0000000000000020ULL
+
+#define BMAC_CTRL_STATUS		0x00030UL
+#define  BMAC_CTRL_STATUS_PAUSE_RECV	0x0000000000000001ULL
+#define  BMAC_CTRL_STATUS_PAUSE		0x0000000000000002ULL
+#define  BMAC_CTRL_STATUS_NOPAUSE	0x0000000000000004ULL
+#define  BMAC_CTRL_STATUS_TIME		0x00000000ffff0000ULL
+#define  BMAC_CTRL_STATUS_TIME_SHIFT	16
+
+#define BTXMAC_STATUS_MASK		0x00040UL
+#define BRXMAC_STATUS_MASK		0x00048UL
+#define BMAC_CTRL_STATUS_MASK		0x00050UL
+
+#define BTXMAC_CONFIG			0x00060UL
+#define  BTXMAC_CONFIG_ENABLE		0x0000000000000001ULL
+#define  BTXMAC_CONFIG_FCS_DISABLE	0x0000000000000002ULL
+
+#define BRXMAC_CONFIG			0x00068UL
+#define  BRXMAC_CONFIG_DISCARD_DIS	0x0000000000000080ULL
+#define  BRXMAC_CONFIG_ADDR_FILT_EN	0x0000000000000040ULL
+#define  BRXMAC_CONFIG_HASH_FILT_EN	0x0000000000000020ULL
+#define  BRXMAC_CONFIG_PROMISC_GRP	0x0000000000000010ULL
+#define  BRXMAC_CONFIG_PROMISC		0x0000000000000008ULL
+#define  BRXMAC_CONFIG_STRIP_FCS	0x0000000000000004ULL
+#define  BRXMAC_CONFIG_STRIP_PAD	0x0000000000000002ULL
+#define  BRXMAC_CONFIG_ENABLE		0x0000000000000001ULL
+
+#define BMAC_CTRL_CONFIG		0x00070UL
+#define  BMAC_CTRL_CONFIG_TX_PAUSE_EN	0x0000000000000001ULL
+#define  BMAC_CTRL_CONFIG_RX_PAUSE_EN	0x0000000000000002ULL
+#define  BMAC_CTRL_CONFIG_PASS_CTRL	0x0000000000000004ULL
+
+#define BMAC_XIF_CONFIG			0x00078UL
+#define  BMAC_XIF_CONFIG_TX_OUTPUT_EN	0x0000000000000001ULL
+#define  BMAC_XIF_CONFIG_MII_LOOPBACK	0x0000000000000002ULL
+#define  BMAC_XIF_CONFIG_GMII_MODE	0x0000000000000008ULL
+#define  BMAC_XIF_CONFIG_LINK_LED	0x0000000000000020ULL
+#define  BMAC_XIF_CONFIG_LED_POLARITY	0x0000000000000040ULL
+#define  BMAC_XIF_CONFIG_25MHZ_CLOCK	0x0000000000000080ULL
+
+#define BMAC_MIN_FRAME			0x000a0UL
+#define  BMAC_MIN_FRAME_VAL		0x00000000000003ffULL
+
+#define BMAC_MAX_FRAME			0x000a8UL
+#define  BMAC_MAX_FRAME_MAX_BURST	0x000000003fff0000ULL
+#define  BMAC_MAX_FRAME_MAX_BURST_SHIFT	16
+#define  BMAC_MAX_FRAME_MAX_FRAME	0x0000000000003fffULL
+#define  BMAC_MAX_FRAME_MAX_FRAME_SHIFT	0
+
+#define BMAC_PREAMBLE_SIZE		0x000b0UL
+#define  BMAC_PREAMBLE_SIZE_VAL		0x00000000000003ffULL
+
+#define BMAC_CTRL_TYPE			0x000c8UL
+
+#define BMAC_ADDR0			0x00100UL
+#define  BMAC_ADDR0_ADDR0		0x000000000000ffffULL
+
+#define BMAC_ADDR1			0x00108UL
+#define  BMAC_ADDR1_ADDR1		0x000000000000ffffULL
+
+#define BMAC_ADDR2			0x00110UL
+#define  BMAC_ADDR2_ADDR2		0x000000000000ffffULL
+
+#define BMAC_NUM_ALT_ADDR		6
+
+#define BMAC_ALT_ADDR0(NUM)		(0x00118UL + (NUM)*0x18UL)
+#define  BMAC_ALT_ADDR0_ADDR0		0x000000000000ffffULL
+
+#define BMAC_ALT_ADDR1(NUM)		(0x00120UL + (NUM)*0x18UL)
+#define  BMAC_ALT_ADDR1_ADDR1		0x000000000000ffffULL
+
+#define BMAC_ALT_ADDR2(NUM)		(0x00128UL + (NUM)*0x18UL)
+#define  BMAC_ALT_ADDR2_ADDR2		0x000000000000ffffULL
+
+#define BMAC_FC_ADDR0			0x00268UL
+#define  BMAC_FC_ADDR0_ADDR0		0x000000000000ffffULL
+
+#define BMAC_FC_ADDR1			0x00270UL
+#define  BMAC_FC_ADDR1_ADDR1		0x000000000000ffffULL
+
+#define BMAC_FC_ADDR2			0x00278UL
+#define  BMAC_FC_ADDR2_ADDR2		0x000000000000ffffULL
+
+#define BMAC_ADD_FILT0			0x00298UL
+#define  BMAC_ADD_FILT0_FILT0		0x000000000000ffffULL
+
+#define BMAC_ADD_FILT1			0x002a0UL
+#define  BMAC_ADD_FILT1_FILT1		0x000000000000ffffULL
+
+#define BMAC_ADD_FILT2			0x002a8UL
+#define  BMAC_ADD_FILT2_FILT2		0x000000000000ffffULL
+
+#define BMAC_ADD_FILT12_MASK		0x002b0UL
+#define  BMAC_ADD_FILT12_MASK_VAL	0x00000000000000ffULL
+
+#define BMAC_ADD_FILT00_MASK		0x002b8UL
+#define  BMAC_ADD_FILT00_MASK_VAL	0x000000000000ffffULL
+
+#define BMAC_HASH_TBL(NUM)		(0x002c0UL + (NUM) * 0x8UL)
+#define BMAC_HASH_TBL_VAL		0x000000000000ffffULL
+
+#define BRXMAC_FRAME_CNT		0x00370
+#define  BRXMAC_FRAME_CNT_COUNT		0x000000000000ffffULL
+
+#define BRXMAC_MAX_LEN_ERR_CNT		0x00378
+
+#define BRXMAC_ALIGN_ERR_CNT		0x00380
+#define  BRXMAC_ALIGN_ERR_CNT_COUNT	0x000000000000ffffULL
+
+#define BRXMAC_CRC_ERR_CNT		0x00388
+#define  BRXMAC_ALIGN_ERR_CNT_COUNT	0x000000000000ffffULL
+
+#define BRXMAC_CODE_VIOL_ERR_CNT	0x00390
+#define  BRXMAC_CODE_VIOL_ERR_CNT_COUNT	0x000000000000ffffULL
+
+#define BMAC_STATE_MACHINE		0x003a0
+
+#define BMAC_ADDR_CMPEN			0x003f8UL
+#define  BMAC_ADDR_CMPEN_EN15		0x0000000000008000ULL
+#define  BMAC_ADDR_CMPEN_EN14		0x0000000000004000ULL
+#define  BMAC_ADDR_CMPEN_EN13		0x0000000000002000ULL
+#define  BMAC_ADDR_CMPEN_EN12		0x0000000000001000ULL
+#define  BMAC_ADDR_CMPEN_EN11		0x0000000000000800ULL
+#define  BMAC_ADDR_CMPEN_EN10		0x0000000000000400ULL
+#define  BMAC_ADDR_CMPEN_EN9		0x0000000000000200ULL
+#define  BMAC_ADDR_CMPEN_EN8		0x0000000000000100ULL
+#define  BMAC_ADDR_CMPEN_EN7		0x0000000000000080ULL
+#define  BMAC_ADDR_CMPEN_EN6		0x0000000000000040ULL
+#define  BMAC_ADDR_CMPEN_EN5		0x0000000000000020ULL
+#define  BMAC_ADDR_CMPEN_EN4		0x0000000000000010ULL
+#define  BMAC_ADDR_CMPEN_EN3		0x0000000000000008ULL
+#define  BMAC_ADDR_CMPEN_EN2		0x0000000000000004ULL
+#define  BMAC_ADDR_CMPEN_EN1		0x0000000000000002ULL
+#define  BMAC_ADDR_CMPEN_EN0		0x0000000000000001ULL
+
+#define BMAC_NUM_HOST_INFO		9
+
+#define BMAC_HOST_INFO(NUM)		(0x00400UL + (NUM) * 0x8UL)
+
+#define BTXMAC_BYTE_CNT			0x00448UL
+#define  BTXMAC_BYTE_CNT_COUNT		0x00000000ffffffffULL
+
+#define BTXMAC_FRM_CNT			0x00450UL
+#define  BTXMAC_FRM_CNT_COUNT		0x00000000ffffffffULL
+
+#define BRXMAC_BYTE_CNT			0x00458UL
+#define  BRXMAC_BYTE_CNT_COUNT		0x00000000ffffffffULL
+
+#define HOST_INFO_MPR			0x0000000000000100ULL
+#define HOST_INFO_MACRDCTBLN		0x0000000000000007ULL
+
+/* XPCS registers, offset from np->regs + np->xpcs_off  */
+
+#define XPCS_CONTROL1			(FZC_MAC + 0x00000UL)
+#define  XPCS_CONTROL1_RESET		0x0000000000008000ULL
+#define  XPCS_CONTROL1_LOOPBACK		0x0000000000004000ULL
+#define  XPCS_CONTROL1_SPEED_SELECT3	0x0000000000002000ULL
+#define  XPCS_CONTROL1_CSR_LOW_PWR	0x0000000000000800ULL
+#define  XPCS_CONTROL1_CSR_SPEED1	0x0000000000000040ULL
+#define  XPCS_CONTROL1_CSR_SPEED0	0x000000000000003cULL
+
+#define XPCS_STATUS1			(FZC_MAC + 0x00008UL)
+#define  XPCS_STATUS1_CSR_FAULT		0x0000000000000080ULL
+#define  XPCS_STATUS1_CSR_RXLNK_STAT	0x0000000000000004ULL
+#define  XPCS_STATUS1_CSR_LPWR_ABLE	0x0000000000000002ULL
+
+#define XPCS_DEVICE_IDENTIFIER		(FZC_MAC + 0x00010UL)
+#define  XPCS_DEVICE_IDENTIFIER_VAL	0x00000000ffffffffULL
+
+#define XPCS_SPEED_ABILITY		(FZC_MAC + 0x00018UL)
+#define  XPCS_SPEED_ABILITY_10GIG	0x0000000000000001ULL
+
+#define XPCS_DEV_IN_PKG			(FZC_MAC + 0x00020UL)
+#define  XPCS_DEV_IN_PKG_CSR_VEND2	0x0000000080000000ULL
+#define  XPCS_DEV_IN_PKG_CSR_VEND1	0x0000000040000000ULL
+#define  XPCS_DEV_IN_PKG_DTE_XS		0x0000000000000020ULL
+#define  XPCS_DEV_IN_PKG_PHY_XS		0x0000000000000010ULL
+#define  XPCS_DEV_IN_PKG_PCS		0x0000000000000008ULL
+#define  XPCS_DEV_IN_PKG_WIS		0x0000000000000004ULL
+#define  XPCS_DEV_IN_PKG_PMD_PMA	0x0000000000000002ULL
+#define  XPCS_DEV_IN_PKG_CLS22		0x0000000000000001ULL
+
+#define XPCS_CONTROL2			(FZC_MAC + 0x00028UL)
+#define  XPCS_CONTROL2_CSR_PSC_SEL	0x0000000000000003ULL
+
+#define XPCS_STATUS2			(FZC_MAC + 0x00030UL)
+#define  XPCS_STATUS2_CSR_DEV_PRES	0x000000000000c000ULL
+#define  XPCS_STATUS2_CSR_TX_FAULT	0x0000000000000800ULL
+#define  XPCS_STATUS2_CSR_RCV_FAULT	0x0000000000000400ULL
+#define  XPCS_STATUS2_TEN_GBASE_W	0x0000000000000004ULL
+#define  XPCS_STATUS2_TEN_GBASE_X	0x0000000000000002ULL
+#define  XPCS_STATUS2_TEN_GBASE_R	0x0000000000000001ULL
+
+#define XPCS_PKG_ID			(FZC_MAC + 0x00038UL)
+#define  XPCS_PKG_ID_VAL		0x00000000ffffffffULL
+
+#define XPCS_STATUS(IDX)		(FZC_MAC + 0x00040UL)
+#define  XPCS_STATUS_CSR_LANE_ALIGN	0x0000000000001000ULL
+#define  XPCS_STATUS_CSR_PATTEST_CAP	0x0000000000000800ULL
+#define  XPCS_STATUS_CSR_LANE3_SYNC	0x0000000000000008ULL
+#define  XPCS_STATUS_CSR_LANE2_SYNC	0x0000000000000004ULL
+#define  XPCS_STATUS_CSR_LANE1_SYNC	0x0000000000000002ULL
+#define  XPCS_STATUS_CSR_LANE0_SYNC	0x0000000000000001ULL
+
+#define XPCS_TEST_CONTROL		(FZC_MAC + 0x00048UL)
+#define  XPCS_TEST_CONTROL_TXTST_EN	0x0000000000000004ULL
+#define  XPCS_TEST_CONTROL_TPAT_SEL	0x0000000000000003ULL
+
+#define XPCS_CFG_VENDOR1		(FZC_MAC + 0x00050UL)
+#define  XPCS_CFG_VENDOR1_DBG_IOTST	0x0000000000000080ULL
+#define  XPCS_CFG_VENDOR1_DBG_SEL	0x0000000000000078ULL
+#define  XPCS_CFG_VENDOR1_BYPASS_DET	0x0000000000000004ULL
+#define  XPCS_CFG_VENDOR1_TXBUF_EN	0x0000000000000002ULL
+#define  XPCS_CFG_VENDOR1_XPCS_EN	0x0000000000000001ULL
+
+#define XPCS_DIAG_VENDOR2		(FZC_MAC + 0x00058UL)
+#define  XPCS_DIAG_VENDOR2_SSM_LANE3	0x0000000001e00000ULL
+#define  XPCS_DIAG_VENDOR2_SSM_LANE2	0x00000000001e0000ULL
+#define  XPCS_DIAG_VENDOR2_SSM_LANE1	0x000000000001e000ULL
+#define  XPCS_DIAG_VENDOR2_SSM_LANE0	0x0000000000001e00ULL
+#define  XPCS_DIAG_VENDOR2_EBUF_SM	0x00000000000001feULL
+#define  XPCS_DIAG_VENDOR2_RCV_SM	0x0000000000000001ULL
+
+#define XPCS_MASK1			(FZC_MAC + 0x00060UL)
+#define  XPCS_MASK1_FAULT_MASK		0x0000000000000080ULL
+#define  XPCS_MASK1_RXALIGN_STAT_MSK	0x0000000000000004ULL
+
+#define XPCS_PKT_COUNT			(FZC_MAC + 0x00068UL)
+#define  XPCS_PKT_COUNT_TX		0x00000000ffff0000ULL
+#define  XPCS_PKT_COUNT_RX		0x000000000000ffffULL
+
+#define XPCS_TX_SM			(FZC_MAC + 0x00070UL)
+#define  XPCS_TX_SM_VAL			0x000000000000000fULL
+
+#define XPCS_DESKEW_ERR_CNT		(FZC_MAC + 0x00078UL)
+#define  XPCS_DESKEW_ERR_CNT_VAL	0x00000000000000ffULL
+
+#define XPCS_SYMERR_CNT01		(FZC_MAC + 0x00080UL)
+#define  XPCS_SYMERR_CNT01_LANE1	0x00000000ffff0000ULL
+#define  XPCS_SYMERR_CNT01_LANE0	0x000000000000ffffULL
+
+#define XPCS_SYMERR_CNT23		(FZC_MAC + 0x00088UL)
+#define  XPCS_SYMERR_CNT23_LANE3	0x00000000ffff0000ULL
+#define  XPCS_SYMERR_CNT23_LANE2	0x000000000000ffffULL
+
+#define XPCS_TRAINING_VECTOR		(FZC_MAC + 0x00090UL)
+#define  XPCS_TRAINING_VECTOR_VAL	0x00000000ffffffffULL
+
+/* PCS registers, offset from np->regs + np->pcs_off  */
+
+#define PCS_MII_CTL			(FZC_MAC + 0x00000UL)
+#define  PCS_MII_CTL_RST		0x0000000000008000ULL
+#define  PCS_MII_CTL_10_100_SPEED	0x0000000000002000ULL
+#define  PCS_MII_AUTONEG_EN		0x0000000000001000ULL
+#define  PCS_MII_PWR_DOWN		0x0000000000000800ULL
+#define  PCS_MII_ISOLATE		0x0000000000000400ULL
+#define  PCS_MII_AUTONEG_RESTART	0x0000000000000200ULL
+#define  PCS_MII_DUPLEX			0x0000000000000100ULL
+#define  PCS_MII_COLL_TEST		0x0000000000000080ULL
+#define  PCS_MII_1000MB_SPEED		0x0000000000000040ULL
+
+#define PCS_MII_STAT			(FZC_MAC + 0x00008UL)
+#define  PCS_MII_STAT_EXT_STATUS	0x0000000000000100ULL
+#define  PCS_MII_STAT_AUTONEG_DONE	0x0000000000000020ULL
+#define  PCS_MII_STAT_REMOTE_FAULT	0x0000000000000010ULL
+#define  PCS_MII_STAT_AUTONEG_ABLE	0x0000000000000008ULL
+#define  PCS_MII_STAT_LINK_STATUS	0x0000000000000004ULL
+#define  PCS_MII_STAT_JABBER_DET	0x0000000000000002ULL
+#define  PCS_MII_STAT_EXT_CAP		0x0000000000000001ULL
+
+#define PCS_MII_ADV			(FZC_MAC + 0x00010UL)
+#define  PCS_MII_ADV_NEXT_PAGE		0x0000000000008000ULL
+#define  PCS_MII_ADV_ACK		0x0000000000004000ULL
+#define  PCS_MII_ADV_REMOTE_FAULT	0x0000000000003000ULL
+#define  PCS_MII_ADV_ASM_DIR		0x0000000000000100ULL
+#define  PCS_MII_ADV_PAUSE		0x0000000000000080ULL
+#define  PCS_MII_ADV_HALF_DUPLEX	0x0000000000000040ULL
+#define  PCS_MII_ADV_FULL_DUPLEX	0x0000000000000020ULL
+
+#define PCS_MII_PARTNER			(FZC_MAC + 0x00018UL)
+#define  PCS_MII_PARTNER_NEXT_PAGE	0x0000000000008000ULL
+#define  PCS_MII_PARTNER_ACK		0x0000000000004000ULL
+#define  PCS_MII_PARTNER_REMOTE_FAULT	0x0000000000002000ULL
+#define  PCS_MII_PARTNER_PAUSE		0x0000000000000180ULL
+#define  PCS_MII_PARTNER_HALF_DUPLEX	0x0000000000000040ULL
+#define  PCS_MII_PARTNER_FULL_DUPLEX	0x0000000000000020ULL
+
+#define PCS_CONF			(FZC_MAC + 0x00020UL)
+#define  PCS_CONF_MASK			0x0000000000000040ULL
+#define  PCS_CONF_10MS_TMR_OVERRIDE	0x0000000000000020ULL
+#define  PCS_CONF_JITTER_STUDY		0x0000000000000018ULL
+#define  PCS_CONF_SIGDET_ACTIVE_LOW	0x0000000000000004ULL
+#define  PCS_CONF_SIGDET_OVERRIDE	0x0000000000000002ULL
+#define  PCS_CONF_ENABLE		0x0000000000000001ULL
+
+#define PCS_STATE			(FZC_MAC + 0x00028UL)
+#define  PCS_STATE_D_PARTNER_FAIL	0x0000000020000000ULL
+#define  PCS_STATE_D_WAIT_C_CODES_ACK	0x0000000010000000ULL
+#define  PCS_STATE_D_SYNC_LOSS		0x0000000008000000ULL
+#define  PCS_STATE_D_NO_GOOD_C_CODES	0x0000000004000000ULL
+#define  PCS_STATE_D_SERDES		0x0000000002000000ULL
+#define  PCS_STATE_D_BREAKLINK_C_CODES	0x0000000001000000ULL
+#define  PCS_STATE_L_SIGDET		0x0000000000400000ULL
+#define  PCS_STATE_L_SYNC_LOSS		0x0000000000200000ULL
+#define  PCS_STATE_L_C_CODES		0x0000000000100000ULL
+#define  PCS_STATE_LINK_CFG_STATE	0x000000000001e000ULL
+#define  PCS_STATE_SEQ_DET_STATE	0x0000000000001800ULL
+#define  PCS_STATE_WORD_SYNC_STATE	0x0000000000000700ULL
+#define  PCS_STATE_NO_IDLE		0x000000000000000fULL
+
+#define PCS_INTERRUPT			(FZC_MAC + 0x00030UL)
+#define  PCS_INTERRUPT_LSTATUS		0x0000000000000004ULL
+
+#define PCS_DPATH_MODE			(FZC_MAC + 0x000a0UL)
+#define  PCS_DPATH_MODE_PCS		0x0000000000000000ULL
+#define  PCS_DPATH_MODE_MII		0x0000000000000002ULL
+#define  PCS_DPATH_MODE_LINKUP_F_ENAB	0x0000000000000001ULL
+
+#define PCS_PKT_CNT			(FZC_MAC + 0x000c0UL)
+#define  PCS_PKT_CNT_RX			0x0000000007ff0000ULL
+#define  PCS_PKT_CNT_TX			0x00000000000007ffULL
+
+#define MIF_BB_MDC			(FZC_MAC + 0x16000UL)
+#define  MIF_BB_MDC_CLK			0x0000000000000001ULL
+
+#define MIF_BB_MDO			(FZC_MAC + 0x16008UL)
+#define  MIF_BB_MDO_DAT			0x0000000000000001ULL
+
+#define MIF_BB_MDO_EN			(FZC_MAC + 0x16010UL)
+#define  MIF_BB_MDO_EN_VAL		0x0000000000000001ULL
+
+#define MIF_FRAME_OUTPUT		(FZC_MAC + 0x16018UL)
+#define  MIF_FRAME_OUTPUT_ST		0x00000000c0000000ULL
+#define  MIF_FRAME_OUTPUT_ST_SHIFT	30
+#define  MIF_FRAME_OUTPUT_OP_ADDR	0x0000000000000000ULL
+#define  MIF_FRAME_OUTPUT_OP_WRITE	0x0000000010000000ULL
+#define  MIF_FRAME_OUTPUT_OP_READ_INC	0x0000000020000000ULL
+#define  MIF_FRAME_OUTPUT_OP_READ	0x0000000030000000ULL
+#define  MIF_FRAME_OUTPUT_OP_SHIFT	28
+#define  MIF_FRAME_OUTPUT_PORT		0x000000000f800000ULL
+#define  MIF_FRAME_OUTPUT_PORT_SHIFT	23
+#define  MIF_FRAME_OUTPUT_REG		0x00000000007c0000ULL
+#define  MIF_FRAME_OUTPUT_REG_SHIFT	18
+#define  MIF_FRAME_OUTPUT_TA		0x0000000000030000ULL
+#define  MIF_FRAME_OUTPUT_TA_SHIFT	16
+#define  MIF_FRAME_OUTPUT_DATA		0x000000000000ffffULL
+#define  MIF_FRAME_OUTPUT_DATA_SHIFT	0
+
+#define MDIO_ADDR_OP(port, dev, reg) \
+	((0 << MIF_FRAME_OUTPUT_ST_SHIFT) | \
+	 MIF_FRAME_OUTPUT_OP_ADDR | \
+	 (port << MIF_FRAME_OUTPUT_PORT_SHIFT) | \
+	 (dev << MIF_FRAME_OUTPUT_REG_SHIFT) | \
+	 (0x2 << MIF_FRAME_OUTPUT_TA_SHIFT) | \
+	 (reg << MIF_FRAME_OUTPUT_DATA_SHIFT))
+
+#define MDIO_READ_OP(port, dev) \
+	((0 << MIF_FRAME_OUTPUT_ST_SHIFT) | \
+	 MIF_FRAME_OUTPUT_OP_READ | \
+	 (port << MIF_FRAME_OUTPUT_PORT_SHIFT) | \
+	 (dev << MIF_FRAME_OUTPUT_REG_SHIFT) | \
+	 (0x2 << MIF_FRAME_OUTPUT_TA_SHIFT))
+
+#define MDIO_WRITE_OP(port, dev, data) \
+	((0 << MIF_FRAME_OUTPUT_ST_SHIFT) | \
+	 MIF_FRAME_OUTPUT_OP_WRITE | \
+	 (port << MIF_FRAME_OUTPUT_PORT_SHIFT) | \
+	 (dev << MIF_FRAME_OUTPUT_REG_SHIFT) | \
+	 (0x2 << MIF_FRAME_OUTPUT_TA_SHIFT) | \
+	 (data << MIF_FRAME_OUTPUT_DATA_SHIFT))
+
+#define MII_READ_OP(port, reg) \
+	((1 << MIF_FRAME_OUTPUT_ST_SHIFT) | \
+	 (2 << MIF_FRAME_OUTPUT_OP_SHIFT) | \
+	 (port << MIF_FRAME_OUTPUT_PORT_SHIFT) | \
+	 (reg << MIF_FRAME_OUTPUT_REG_SHIFT) | \
+	 (0x2 << MIF_FRAME_OUTPUT_TA_SHIFT))
+
+#define MII_WRITE_OP(port, reg, data) \
+	((1 << MIF_FRAME_OUTPUT_ST_SHIFT) | \
+	 (1 << MIF_FRAME_OUTPUT_OP_SHIFT) | \
+	 (port << MIF_FRAME_OUTPUT_PORT_SHIFT) | \
+	 (reg << MIF_FRAME_OUTPUT_REG_SHIFT) | \
+	 (0x2 << MIF_FRAME_OUTPUT_TA_SHIFT) | \
+	 (data << MIF_FRAME_OUTPUT_DATA_SHIFT))
+
+#define MIF_CONFIG			(FZC_MAC + 0x16020UL)
+#define  MIF_CONFIG_ATCA_GE		0x0000000000010000ULL
+#define  MIF_CONFIG_INDIRECT_MODE	0x0000000000008000ULL
+#define  MIF_CONFIG_POLL_PRT_PHYADDR	0x0000000000003c00ULL
+#define  MIF_CONFIG_POLL_DEV_REG_ADDR	0x00000000000003e0ULL
+#define  MIF_CONFIG_BB_MODE		0x0000000000000010ULL
+#define  MIF_CONFIG_POLL_EN		0x0000000000000008ULL
+#define  MIF_CONFIG_BB_SER_SEL		0x0000000000000006ULL
+#define  MIF_CONFIG_MANUAL_MODE		0x0000000000000001ULL
+
+#define MIF_POLL_STATUS			(FZC_MAC + 0x16028UL)
+#define  MIF_POLL_STATUS_DATA		0x00000000ffff0000ULL
+#define  MIF_POLL_STATUS_STAT		0x000000000000ffffULL
+
+#define MIF_POLL_MASK			(FZC_MAC + 0x16030UL)
+#define  MIF_POLL_MASK_VAL		0x000000000000ffffULL
+
+#define MIF_SM				(FZC_MAC + 0x16038UL)
+#define  MIF_SM_PORT_ADDR		0x00000000001f0000ULL
+#define  MIF_SM_MDI_1			0x0000000000004000ULL
+#define  MIF_SM_MDI_0			0x0000000000002400ULL
+#define  MIF_SM_MDCLK			0x0000000000001000ULL
+#define  MIF_SM_MDO_EN			0x0000000000000800ULL
+#define  MIF_SM_MDO			0x0000000000000400ULL
+#define  MIF_SM_MDI			0x0000000000000200ULL
+#define  MIF_SM_CTL			0x00000000000001c0ULL
+#define  MIF_SM_EX			0x000000000000003fULL
+
+#define MIF_STATUS			(FZC_MAC + 0x16040UL)
+#define  MIF_STATUS_MDINT1		0x0000000000000020ULL
+#define  MIF_STATUS_MDINT0		0x0000000000000010ULL
+
+#define MIF_MASK			(FZC_MAC + 0x16048UL)
+#define  MIF_MASK_MDINT1		0x0000000000000020ULL
+#define  MIF_MASK_MDINT0		0x0000000000000010ULL
+#define  MIF_MASK_PEU_ERR		0x0000000000000008ULL
+#define  MIF_MASK_YC			0x0000000000000004ULL
+#define  MIF_MASK_XGE_ERR0		0x0000000000000002ULL
+#define  MIF_MASK_MIF_INIT_DONE		0x0000000000000001ULL
+
+#define ENET_SERDES_RESET		(FZC_MAC + 0x14000UL)
+#define  ENET_SERDES_RESET_1		0x0000000000000002ULL
+#define  ENET_SERDES_RESET_0		0x0000000000000001ULL
+
+#define ENET_SERDES_CFG			(FZC_MAC + 0x14008UL)
+#define  ENET_SERDES_BE_LOOPBACK	0x0000000000000002ULL
+#define  ENET_SERDES_CFG_FORCE_RDY	0x0000000000000001ULL
+
+#define ENET_SERDES_0_PLL_CFG		(FZC_MAC + 0x14010UL)
+#define  ENET_SERDES_PLL_FBDIV0		0x0000000000000001ULL
+#define  ENET_SERDES_PLL_FBDIV1		0x0000000000000002ULL
+#define  ENET_SERDES_PLL_FBDIV2		0x0000000000000004ULL
+#define  ENET_SERDES_PLL_HRATE0		0x0000000000000008ULL
+#define  ENET_SERDES_PLL_HRATE1		0x0000000000000010ULL
+#define  ENET_SERDES_PLL_HRATE2		0x0000000000000020ULL
+#define  ENET_SERDES_PLL_HRATE3		0x0000000000000040ULL
+
+#define ENET_SERDES_0_CTRL_CFG		(FZC_MAC + 0x14018UL)
+#define  ENET_SERDES_CTRL_SDET_0	0x0000000000000001ULL
+#define  ENET_SERDES_CTRL_SDET_1	0x0000000000000002ULL
+#define  ENET_SERDES_CTRL_SDET_2	0x0000000000000004ULL
+#define  ENET_SERDES_CTRL_SDET_3	0x0000000000000008ULL
+#define  ENET_SERDES_CTRL_EMPH_0	0x0000000000000070ULL
+#define  ENET_SERDES_CTRL_EMPH_0_SHIFT	4
+#define  ENET_SERDES_CTRL_EMPH_1	0x0000000000000380ULL
+#define  ENET_SERDES_CTRL_EMPH_1_SHIFT	7
+#define  ENET_SERDES_CTRL_EMPH_2	0x0000000000001c00ULL
+#define  ENET_SERDES_CTRL_EMPH_2_SHIFT	10
+#define  ENET_SERDES_CTRL_EMPH_3	0x000000000000e000ULL
+#define  ENET_SERDES_CTRL_EMPH_3_SHIFT	13
+#define  ENET_SERDES_CTRL_LADJ_0	0x0000000000070000ULL
+#define  ENET_SERDES_CTRL_LADJ_0_SHIFT	16
+#define  ENET_SERDES_CTRL_LADJ_1	0x0000000000380000ULL
+#define  ENET_SERDES_CTRL_LADJ_1_SHIFT	19
+#define  ENET_SERDES_CTRL_LADJ_2	0x0000000001c00000ULL
+#define  ENET_SERDES_CTRL_LADJ_2_SHIFT	22
+#define  ENET_SERDES_CTRL_LADJ_3	0x000000000e000000ULL
+#define  ENET_SERDES_CTRL_LADJ_3_SHIFT	25
+#define  ENET_SERDES_CTRL_RXITERM_0	0x0000000010000000ULL
+#define  ENET_SERDES_CTRL_RXITERM_1	0x0000000020000000ULL
+#define  ENET_SERDES_CTRL_RXITERM_2	0x0000000040000000ULL
+#define  ENET_SERDES_CTRL_RXITERM_3	0x0000000080000000ULL
+
+#define ENET_SERDES_0_TEST_CFG		(FZC_MAC + 0x14020UL)
+#define  ENET_SERDES_TEST_MD_0		0x0000000000000003ULL
+#define  ENET_SERDES_TEST_MD_0_SHIFT	0
+#define  ENET_SERDES_TEST_MD_1		0x000000000000000cULL
+#define  ENET_SERDES_TEST_MD_1_SHIFT	2
+#define  ENET_SERDES_TEST_MD_2		0x0000000000000030ULL
+#define  ENET_SERDES_TEST_MD_2_SHIFT	4
+#define  ENET_SERDES_TEST_MD_3		0x00000000000000c0ULL
+#define  ENET_SERDES_TEST_MD_3_SHIFT	6
+
+#define ENET_TEST_MD_NO_LOOPBACK	0x0
+#define ENET_TEST_MD_EWRAP		0x1
+#define ENET_TEST_MD_PAD_LOOPBACK	0x2
+#define ENET_TEST_MD_REV_LOOPBACK	0x3
+
+#define ENET_SERDES_1_PLL_CFG		(FZC_MAC + 0x14028UL)
+#define ENET_SERDES_1_CTRL_CFG		(FZC_MAC + 0x14030UL)
+#define ENET_SERDES_1_TEST_CFG		(FZC_MAC + 0x14038UL)
+
+#define ENET_RGMII_CFG_REG		(FZC_MAC + 0x14040UL)
+
+#define ESR_INT_SIGNALS			(FZC_MAC + 0x14800UL)
+#define  ESR_INT_SIGNALS_ALL		0x00000000ffffffffULL
+#define  ESR_INT_SIGNALS_P0_BITS	0x0000000033e0000fULL
+#define  ESR_INT_SIGNALS_P1_BITS	0x000000000c1f00f0ULL
+#define  ESR_INT_SRDY0_P0		0x0000000020000000ULL
+#define  ESR_INT_DET0_P0		0x0000000010000000ULL
+#define  ESR_INT_SRDY0_P1		0x0000000008000000ULL
+#define  ESR_INT_DET0_P1		0x0000000004000000ULL
+#define  ESR_INT_XSRDY_P0		0x0000000002000000ULL
+#define  ESR_INT_XDP_P0_CH3		0x0000000001000000ULL
+#define  ESR_INT_XDP_P0_CH2		0x0000000000800000ULL
+#define  ESR_INT_XDP_P0_CH1		0x0000000000400000ULL
+#define  ESR_INT_XDP_P0_CH0		0x0000000000200000ULL
+#define  ESR_INT_XSRDY_P1		0x0000000000100000ULL
+#define  ESR_INT_XDP_P1_CH3		0x0000000000080000ULL
+#define  ESR_INT_XDP_P1_CH2		0x0000000000040000ULL
+#define  ESR_INT_XDP_P1_CH1		0x0000000000020000ULL
+#define  ESR_INT_XDP_P1_CH0		0x0000000000010000ULL
+#define  ESR_INT_SLOSS_P1_CH3		0x0000000000000080ULL
+#define  ESR_INT_SLOSS_P1_CH2		0x0000000000000040ULL
+#define  ESR_INT_SLOSS_P1_CH1		0x0000000000000020ULL
+#define  ESR_INT_SLOSS_P1_CH0		0x0000000000000010ULL
+#define  ESR_INT_SLOSS_P0_CH3		0x0000000000000008ULL
+#define  ESR_INT_SLOSS_P0_CH2		0x0000000000000004ULL
+#define  ESR_INT_SLOSS_P0_CH1		0x0000000000000002ULL
+#define  ESR_INT_SLOSS_P0_CH0		0x0000000000000001ULL
+
+#define ESR_DEBUG_SEL			(FZC_MAC + 0x14808UL)
+#define  ESR_DEBUG_SEL_VAL		0x000000000000003fULL
+
+/* SerDes registers behind MIF */
+#define NIU_ESR_DEV_ADDR		0x1e
+#define ESR_BASE			0x0000
+
+#define ESR_RXTX_COMM_CTRL_L		(ESR_BASE + 0x0000)
+#define ESR_RXTX_COMM_CTRL_H		(ESR_BASE + 0x0001)
+
+#define ESR_RXTX_RESET_CTRL_L		(ESR_BASE + 0x0002)
+#define ESR_RXTX_RESET_CTRL_H		(ESR_BASE + 0x0003)
+
+#define ESR_RX_POWER_CTRL_L		(ESR_BASE + 0x0004)
+#define ESR_RX_POWER_CTRL_H		(ESR_BASE + 0x0005)
+
+#define ESR_TX_POWER_CTRL_L		(ESR_BASE + 0x0006)
+#define ESR_TX_POWER_CTRL_H		(ESR_BASE + 0x0007)
+
+#define ESR_MISC_POWER_CTRL_L		(ESR_BASE + 0x0008)
+#define ESR_MISC_POWER_CTRL_H		(ESR_BASE + 0x0009)
+
+#define ESR_RXTX_CTRL_L(CHAN)		(ESR_BASE + 0x0080 + (CHAN) * 0x10)
+#define ESR_RXTX_CTRL_H(CHAN)		(ESR_BASE + 0x0081 + (CHAN) * 0x10)
+#define  ESR_RXTX_CTRL_BIASCNTL		0x80000000
+#define  ESR_RXTX_CTRL_RESV1		0x7c000000
+#define  ESR_RXTX_CTRL_TDENFIFO		0x02000000
+#define  ESR_RXTX_CTRL_TDWS20		0x01000000
+#define  ESR_RXTX_CTRL_VMUXLO		0x00c00000
+#define  ESR_RXTX_CTRL_VMUXLO_SHIFT	22
+#define  ESR_RXTX_CTRL_VPULSELO		0x00300000
+#define  ESR_RXTX_CTRL_VPULSELO_SHIFT	20
+#define  ESR_RXTX_CTRL_RESV2		0x000f0000
+#define  ESR_RXTX_CTRL_RESV3		0x0000c000
+#define  ESR_RXTX_CTRL_RXPRESWIN	0x00003000
+#define  ESR_RXTX_CTRL_RXPRESWIN_SHIFT	12
+#define  ESR_RXTX_CTRL_RESV4		0x00000800
+#define  ESR_RXTX_CTRL_RISEFALL		0x00000700
+#define  ESR_RXTX_CTRL_RISEFALL_SHIFT	8
+#define  ESR_RXTX_CTRL_RESV5		0x000000fe
+#define  ESR_RXTX_CTRL_ENSTRETCH	0x00000001
+
+#define ESR_RXTX_TUNING_L(CHAN)		(ESR_BASE + 0x0082 + (CHAN) * 0x10)
+#define ESR_RXTX_TUNING_H(CHAN)		(ESR_BASE + 0x0083 + (CHAN) * 0x10)
+
+#define ESR_RX_SYNCCHAR_L(CHAN)		(ESR_BASE + 0x0084 + (CHAN) * 0x10)
+#define ESR_RX_SYNCCHAR_H(CHAN)		(ESR_BASE + 0x0085 + (CHAN) * 0x10)
+
+#define ESR_RXTX_TEST_L(CHAN)		(ESR_BASE + 0x0086 + (CHAN) * 0x10)
+#define ESR_RXTX_TEST_H(CHAN)		(ESR_BASE + 0x0087 + (CHAN) * 0x10)
+
+#define ESR_GLUE_CTRL0_L(CHAN)		(ESR_BASE + 0x0088 + (CHAN) * 0x10)
+#define ESR_GLUE_CTRL0_H(CHAN)		(ESR_BASE + 0x0089 + (CHAN) * 0x10)
+#define  ESR_GLUE_CTRL0_RESV1		0xf8000000
+#define  ESR_GLUE_CTRL0_BLTIME		0x07000000
+#define  ESR_GLUE_CTRL0_BLTIME_SHIFT	24
+#define  ESR_GLUE_CTRL0_RESV2		0x00ff0000
+#define  ESR_GLUE_CTRL0_RXLOS_TEST	0x00008000
+#define  ESR_GLUE_CTRL0_RESV3		0x00004000
+#define  ESR_GLUE_CTRL0_RXLOSENAB	0x00002000
+#define  ESR_GLUE_CTRL0_FASTRESYNC	0x00001000
+#define  ESR_GLUE_CTRL0_SRATE		0x00000f00
+#define  ESR_GLUE_CTRL0_SRATE_SHIFT	8
+#define  ESR_GLUE_CTRL0_THCNT		0x000000ff
+#define  ESR_GLUE_CTRL0_THCNT_SHIFT	0
+
+#define BLTIME_64_CYCLES		0
+#define BLTIME_128_CYCLES		1
+#define BLTIME_256_CYCLES		2
+#define BLTIME_300_CYCLES		3
+#define BLTIME_384_CYCLES		4
+#define BLTIME_512_CYCLES		5
+#define BLTIME_1024_CYCLES		6
+#define BLTIME_2048_CYCLES		7
+
+#define ESR_GLUE_CTRL1_L(CHAN)		(ESR_BASE + 0x008a + (CHAN) * 0x10)
+#define ESR_GLUE_CTRL1_H(CHAN)		(ESR_BASE + 0x008b + (CHAN) * 0x10)
+#define ESR_RXTX_TUNING1_L(CHAN)	(ESR_BASE + 0x00c2 + (CHAN) * 0x10)
+#define ESR_RXTX_TUNING1_H(CHAN)	(ESR_BASE + 0x00c2 + (CHAN) * 0x10)
+#define ESR_RXTX_TUNING2_L(CHAN)	(ESR_BASE + 0x0102 + (CHAN) * 0x10)
+#define ESR_RXTX_TUNING2_H(CHAN)	(ESR_BASE + 0x0102 + (CHAN) * 0x10)
+#define ESR_RXTX_TUNING3_L(CHAN)	(ESR_BASE + 0x0142 + (CHAN) * 0x10)
+#define ESR_RXTX_TUNING3_H(CHAN)	(ESR_BASE + 0x0142 + (CHAN) * 0x10)
+
+#define NIU_ESR2_DEV_ADDR		0x1e
+#define ESR2_BASE			0x8000
+
+#define ESR2_TI_PLL_CFG_L		(ESR2_BASE + 0x000)
+#define ESR2_TI_PLL_CFG_H		(ESR2_BASE + 0x001)
+#define  PLL_CFG_STD			0x00000c00
+#define  PLL_CFG_STD_SHIFT		10
+#define  PLL_CFG_LD			0x00000300
+#define  PLL_CFG_LD_SHIFT		8
+#define  PLL_CFG_MPY			0x0000001e
+#define  PLL_CFG_MPY_SHIFT		1
+#define  PLL_CFG_MPY_4X		0x0
+#define  PLL_CFG_MPY_5X		0x00000002
+#define  PLL_CFG_MPY_6X		0x00000004
+#define  PLL_CFG_MPY_8X		0x00000008
+#define  PLL_CFG_MPY_10X		0x0000000a
+#define  PLL_CFG_MPY_12X		0x0000000c
+#define  PLL_CFG_MPY_12P5X		0x0000000e
+#define  PLL_CFG_ENPLL			0x00000001
+
+#define ESR2_TI_PLL_STS_L		(ESR2_BASE + 0x002)
+#define ESR2_TI_PLL_STS_H		(ESR2_BASE + 0x003)
+#define  PLL_STS_LOCK			0x00000001
+
+#define ESR2_TI_PLL_TEST_CFG_L		(ESR2_BASE + 0x004)
+#define ESR2_TI_PLL_TEST_CFG_H		(ESR2_BASE + 0x005)
+#define  PLL_TEST_INVPATT		0x00004000
+#define  PLL_TEST_RATE			0x00003000
+#define  PLL_TEST_RATE_SHIFT		12
+#define  PLL_TEST_CFG_ENBSAC		0x00000400
+#define  PLL_TEST_CFG_ENBSRX		0x00000200
+#define  PLL_TEST_CFG_ENBSTX		0x00000100
+#define  PLL_TEST_CFG_LOOPBACK_PAD	0x00000040
+#define  PLL_TEST_CFG_LOOPBACK_CML_DIS	0x00000080
+#define  PLL_TEST_CFG_LOOPBACK_CML_EN	0x000000c0
+#define  PLL_TEST_CFG_CLKBYP		0x00000030
+#define  PLL_TEST_CFG_CLKBYP_SHIFT	4
+#define  PLL_TEST_CFG_EN_RXPATT		0x00000008
+#define  PLL_TEST_CFG_EN_TXPATT		0x00000004
+#define  PLL_TEST_CFG_TPATT		0x00000003
+#define  PLL_TEST_CFG_TPATT_SHIFT	0
+
+#define ESR2_TI_PLL_TX_CFG_L(CHAN)	(ESR2_BASE + 0x100 + (CHAN) * 4)
+#define ESR2_TI_PLL_TX_CFG_H(CHAN)	(ESR2_BASE + 0x101 + (CHAN) * 4)
+#define  PLL_TX_CFG_RDTCT		0x00600000
+#define  PLL_TX_CFG_RDTCT_SHIFT		21
+#define  PLL_TX_CFG_ENIDL		0x00100000
+#define  PLL_TX_CFG_BSTX		0x00020000
+#define  PLL_TX_CFG_ENFTP		0x00010000
+#define  PLL_TX_CFG_DE			0x0000f000
+#define  PLL_TX_CFG_DE_SHIFT		12
+#define  PLL_TX_CFG_SWING_125MV		0x00000000
+#define  PLL_TX_CFG_SWING_250MV		0x00000200
+#define  PLL_TX_CFG_SWING_500MV		0x00000400
+#define  PLL_TX_CFG_SWING_625MV		0x00000600
+#define  PLL_TX_CFG_SWING_750MV		0x00000800
+#define  PLL_TX_CFG_SWING_1000MV	0x00000a00
+#define  PLL_TX_CFG_SWING_1250MV	0x00000c00
+#define  PLL_TX_CFG_SWING_1375MV	0x00000e00
+#define  PLL_TX_CFG_CM			0x00000100
+#define  PLL_TX_CFG_INVPAIR		0x00000080
+#define  PLL_TX_CFG_RATE		0x00000060
+#define  PLL_TX_CFG_RATE_SHIFT		5
+#define  PLL_TX_CFG_RATE_FULL		0x0
+#define  PLL_TX_CFG_RATE_HALF		0x20
+#define  PLL_TX_CFG_RATE_QUAD		0x40
+#define  PLL_TX_CFG_BUSWIDTH		0x0000001c
+#define  PLL_TX_CFG_BUSWIDTH_SHIFT	2
+#define  PLL_TX_CFG_ENTEST		0x00000002
+#define  PLL_TX_CFG_ENTX		0x00000001
+
+#define ESR2_TI_PLL_TX_STS_L(CHAN)	(ESR2_BASE + 0x102 + (CHAN) * 4)
+#define ESR2_TI_PLL_TX_STS_H(CHAN)	(ESR2_BASE + 0x103 + (CHAN) * 4)
+#define  PLL_TX_STS_RDTCTIP		0x00000002
+#define  PLL_TX_STS_TESTFAIL		0x00000001
+
+#define ESR2_TI_PLL_RX_CFG_L(CHAN)	(ESR2_BASE + 0x120 + (CHAN) * 4)
+#define ESR2_TI_PLL_RX_CFG_H(CHAN)	(ESR2_BASE + 0x121 + (CHAN) * 4)
+#define  PLL_RX_CFG_BSINRXN		0x02000000
+#define  PLL_RX_CFG_BSINRXP		0x01000000
+#define  PLL_RX_CFG_EQ_MAX_LF		0x00000000
+#define  PLL_RX_CFG_EQ_LP_ADAPTIVE	0x00080000
+#define  PLL_RX_CFG_EQ_LP_1084MHZ	0x00400000
+#define  PLL_RX_CFG_EQ_LP_805MHZ	0x00480000
+#define  PLL_RX_CFG_EQ_LP_573MHZ	0x00500000
+#define  PLL_RX_CFG_EQ_LP_402MHZ	0x00580000
+#define  PLL_RX_CFG_EQ_LP_304MHZ	0x00600000
+#define  PLL_RX_CFG_EQ_LP_216MHZ	0x00680000
+#define  PLL_RX_CFG_EQ_LP_156MHZ	0x00700000
+#define  PLL_RX_CFG_EQ_LP_135MHZ	0x00780000
+#define  PLL_RX_CFG_EQ_SHIFT		19
+#define  PLL_RX_CFG_CDR			0x00070000
+#define  PLL_RX_CFG_CDR_SHIFT		16
+#define  PLL_RX_CFG_LOS_DIS		0x00000000
+#define  PLL_RX_CFG_LOS_HTHRESH		0x00004000
+#define  PLL_RX_CFG_LOS_LTHRESH		0x00008000
+#define  PLL_RX_CFG_ALIGN_DIS		0x00000000
+#define  PLL_RX_CFG_ALIGN_ENA		0x00001000
+#define  PLL_RX_CFG_ALIGN_JOG		0x00002000
+#define  PLL_RX_CFG_TERM_VDDT		0x00000000
+#define  PLL_RX_CFG_TERM_0P8VDDT	0x00000100
+#define  PLL_RX_CFG_TERM_FLOAT		0x00000300
+#define  PLL_RX_CFG_INVPAIR		0x00000080
+#define  PLL_RX_CFG_RATE		0x00000060
+#define  PLL_RX_CFG_RATE_SHIFT		5
+#define  PLL_RX_CFG_RATE_FULL		0x0
+#define  PLL_RX_CFG_RATE_HALF		0x20
+#define  PLL_RX_CFG_RATE_QUAD		0x40
+#define  PLL_RX_CFG_BUSWIDTH		0x0000001c
+#define  PLL_RX_CFG_BUSWIDTH_SHIFT	2
+#define  PLL_RX_CFG_ENTEST		0x00000002
+#define  PLL_RX_CFG_ENRX		0x00000001
+
+#define ESR2_TI_PLL_RX_STS_L(CHAN)	(ESR2_BASE + 0x122 + (CHAN) * 4)
+#define ESR2_TI_PLL_RX_STS_H(CHAN)	(ESR2_BASE + 0x123 + (CHAN) * 4)
+#define  PLL_RX_STS_CRCIDTCT		0x00000200
+#define  PLL_RX_STS_CWDTCT		0x00000100
+#define  PLL_RX_STS_BSRXN		0x00000020
+#define  PLL_RX_STS_BSRXP		0x00000010
+#define  PLL_RX_STS_LOSDTCT		0x00000008
+#define  PLL_RX_STS_ODDCG		0x00000004
+#define  PLL_RX_STS_SYNC		0x00000002
+#define  PLL_RX_STS_TESTFAIL		0x00000001
+
+#define ENET_VLAN_TBL(IDX)		(FZC_FFLP + 0x00000UL + (IDX) * 8UL)
+#define  ENET_VLAN_TBL_PARITY1		0x0000000000020000ULL
+#define  ENET_VLAN_TBL_PARITY0		0x0000000000010000ULL
+#define  ENET_VLAN_TBL_VPR		0x0000000000000008ULL
+#define  ENET_VLAN_TBL_VLANRDCTBLN	0x0000000000000007ULL
+#define  ENET_VLAN_TBL_SHIFT(PORT)	((PORT) * 4)
+
+#define ENET_VLAN_TBL_NUM_ENTRIES	4096
+
+#define FFLP_VLAN_PAR_ERR		(FZC_FFLP + 0x0800UL)
+#define  FFLP_VLAN_PAR_ERR_ERR		0x0000000080000000ULL
+#define  FFLP_VLAN_PAR_ERR_M_ERR	0x0000000040000000ULL
+#define  FFLP_VLAN_PAR_ERR_ADDR		0x000000003ffc0000ULL
+#define  FFLP_VLAN_PAR_ERR_DATA		0x000000000003ffffULL
+
+#define L2_CLS(IDX)			(FZC_FFLP + 0x20000UL + (IDX) * 8UL)
+#define  L2_CLS_VLD			0x0000000000010000ULL
+#define  L2_CLS_ETYPE			0x000000000000ffffULL
+#define  L2_CLS_ETYPE_SHIFT		0
+
+#define L3_CLS(IDX)			(FZC_FFLP + 0x20010UL + (IDX) * 8UL)
+#define  L3_CLS_VALID			0x0000000002000000ULL
+#define  L3_CLS_IPVER			0x0000000001000000ULL
+#define  L3_CLS_PID			0x0000000000ff0000ULL
+#define  L3_CLS_PID_SHIFT		16
+#define  L3_CLS_TOSMASK			0x000000000000ff00ULL
+#define  L3_CLS_TOSMASK_SHIFT		8
+#define  L3_CLS_TOS			0x00000000000000ffULL
+#define  L3_CLS_TOS_SHIFT		0
+
+#define TCAM_KEY(IDX)			(FZC_FFLP + 0x20030UL + (IDX) * 8UL)
+#define  TCAM_KEY_DISC			0x0000000000000008ULL
+#define  TCAM_KEY_TSEL			0x0000000000000004ULL
+#define  TCAM_KEY_IPADDR		0x0000000000000001ULL
+
+#define TCAM_KEY_0			(FZC_FFLP + 0x20090UL)
+#define  TCAM_KEY_0_KEY			0x00000000000000ffULL /* bits 192-199 */
+
+#define TCAM_KEY_1			(FZC_FFLP + 0x20098UL)
+#define  TCAM_KEY_1_KEY			0xffffffffffffffffULL /* bits 128-191 */
+
+#define TCAM_KEY_2			(FZC_FFLP + 0x200a0UL)
+#define  TCAM_KEY_2_KEY			0xffffffffffffffffULL /* bits 64-127 */
+
+#define TCAM_KEY_3			(FZC_FFLP + 0x200a8UL)
+#define  TCAM_KEY_3_KEY			0xffffffffffffffffULL /* bits 0-63 */
+
+#define TCAM_KEY_MASK_0			(FZC_FFLP + 0x200b0UL)
+#define  TCAM_KEY_MASK_0_KEY_SEL	0x00000000000000ffULL /* bits 192-199 */
+
+#define TCAM_KEY_MASK_1			(FZC_FFLP + 0x200b8UL)
+#define  TCAM_KEY_MASK_1_KEY_SEL	0xffffffffffffffffULL /* bits 128-191 */
+
+#define TCAM_KEY_MASK_2			(FZC_FFLP + 0x200c0UL)
+#define  TCAM_KEY_MASK_2_KEY_SEL	0xffffffffffffffffULL /* bits 64-127 */
+
+#define TCAM_KEY_MASK_3			(FZC_FFLP + 0x200c8UL)
+#define  TCAM_KEY_MASK_3_KEY_SEL	0xffffffffffffffffULL /* bits 0-63 */
+
+#define TCAM_CTL			(FZC_FFLP + 0x200d0UL)
+#define  TCAM_CTL_RWC			0x00000000001c0000ULL
+#define  TCAM_CTL_RWC_TCAM_WRITE	0x0000000000000000ULL
+#define  TCAM_CTL_RWC_TCAM_READ		0x0000000000040000ULL
+#define  TCAM_CTL_RWC_TCAM_COMPARE	0x0000000000080000ULL
+#define  TCAM_CTL_RWC_RAM_WRITE		0x0000000000100000ULL
+#define  TCAM_CTL_RWC_RAM_READ		0x0000000000140000ULL
+#define  TCAM_CTL_STAT			0x0000000000020000ULL
+#define  TCAM_CTL_MATCH			0x0000000000010000ULL
+#define  TCAM_CTL_LOC			0x00000000000003ffULL
+
+#define TCAM_ERR			(FZC_FFLP + 0x200d8UL)
+#define  TCAM_ERR_ERR			0x0000000080000000ULL
+#define  TCAM_ERR_P_ECC			0x0000000040000000ULL
+#define  TCAM_ERR_MULT			0x0000000020000000ULL
+#define  TCAM_ERR_ADDR			0x0000000000ff0000ULL
+#define  TCAM_ERR_SYNDROME		0x000000000000ffffULL
+
+#define HASH_LOOKUP_ERR_LOG1		(FZC_FFLP + 0x200e0UL)
+#define  HASH_LOOKUP_ERR_LOG1_ERR	0x0000000000000008ULL
+#define  HASH_LOOKUP_ERR_LOG1_MULT_LK	0x0000000000000004ULL
+#define  HASH_LOOKUP_ERR_LOG1_CU	0x0000000000000002ULL
+#define  HASH_LOOKUP_ERR_LOG1_MULT_BIT	0x0000000000000001ULL
+
+#define HASH_LOOKUP_ERR_LOG2		(FZC_FFLP + 0x200e8UL)
+#define  HASH_LOOKUP_ERR_LOG2_H1	0x000000007ffff800ULL
+#define  HASH_LOOKUP_ERR_LOG2_SUBAREA	0x0000000000000700ULL
+#define  HASH_LOOKUP_ERR_LOG2_SYNDROME	0x00000000000000ffULL
+
+#define FFLP_CFG_1			(FZC_FFLP + 0x20100UL)
+#define  FFLP_CFG_1_TCAM_DIS		0x0000000004000000ULL
+#define  FFLP_CFG_1_PIO_DBG_SEL		0x0000000003800000ULL
+#define  FFLP_CFG_1_PIO_FIO_RST		0x0000000000400000ULL
+#define  FFLP_CFG_1_PIO_FIO_LAT		0x0000000000300000ULL
+#define  FFLP_CFG_1_CAMLAT		0x00000000000f0000ULL
+#define  FFLP_CFG_1_CAMLAT_SHIFT	16
+#define  FFLP_CFG_1_CAMRATIO		0x000000000000f000ULL
+#define  FFLP_CFG_1_CAMRATIO_SHIFT	12
+#define  FFLP_CFG_1_FCRAMRATIO		0x0000000000000f00ULL
+#define  FFLP_CFG_1_FCRAMRATIO_SHIFT	8
+#define  FFLP_CFG_1_FCRAMOUTDR_MASK	0x00000000000000f0ULL
+#define  FFLP_CFG_1_FCRAMOUTDR_NORMAL	0x0000000000000000ULL
+#define  FFLP_CFG_1_FCRAMOUTDR_STRONG	0x0000000000000050ULL
+#define  FFLP_CFG_1_FCRAMOUTDR_WEAK	0x00000000000000a0ULL
+#define  FFLP_CFG_1_FCRAMQS		0x0000000000000008ULL
+#define  FFLP_CFG_1_ERRORDIS		0x0000000000000004ULL
+#define  FFLP_CFG_1_FFLPINITDONE	0x0000000000000002ULL
+#define  FFLP_CFG_1_LLCSNAP		0x0000000000000001ULL
+
+#define DEFAULT_FCRAMRATIO		10
+
+#define DEFAULT_TCAM_LATENCY		4
+#define DEFAULT_TCAM_ACCESS_RATIO	10
+
+#define TCP_CFLAG_MSK			(FZC_FFLP + 0x20108UL)
+#define  TCP_CFLAG_MSK_MASK		0x0000000000000fffULL
+
+#define FCRAM_REF_TMR			(FZC_FFLP + 0x20110UL)
+#define  FCRAM_REF_TMR_MAX		0x00000000ffff0000ULL
+#define  FCRAM_REF_TMR_MAX_SHIFT	16
+#define  FCRAM_REF_TMR_MIN		0x000000000000ffffULL
+#define  FCRAM_REF_TMR_MIN_SHIFT	0
+
+#define DEFAULT_FCRAM_REFRESH_MAX	512
+#define DEFAULT_FCRAM_REFRESH_MIN	512
+
+#define FCRAM_FIO_ADDR			(FZC_FFLP + 0x20118UL)
+#define  FCRAM_FIO_ADDR_ADDR		0x00000000000000ffULL
+
+#define FCRAM_FIO_DAT			(FZC_FFLP + 0x20120UL)
+#define  FCRAM_FIO_DAT_DATA		0x000000000000ffffULL
+
+#define FCRAM_ERR_TST0			(FZC_FFLP + 0x20128UL)
+#define  FCRAM_ERR_TST0_SYND		0x00000000000000ffULL
+
+#define FCRAM_ERR_TST1			(FZC_FFLP + 0x20130UL)
+#define  FCRAM_ERR_TST1_DAT		0x00000000ffffffffULL
+
+#define FCRAM_ERR_TST2			(FZC_FFLP + 0x20138UL)
+#define  FCRAM_ERR_TST2_DAT		0x00000000ffffffffULL
+
+#define FFLP_ERR_MASK			(FZC_FFLP + 0x20140UL)
+#define  FFLP_ERR_MASK_HSH_TBL_DAT	0x00000000000007f8ULL
+#define  FFLP_ERR_MASK_HSH_TBL_LKUP	0x0000000000000004ULL
+#define  FFLP_ERR_MASK_TCAM		0x0000000000000002ULL
+#define  FFLP_ERR_MASK_VLAN		0x0000000000000001ULL
+
+#define FFLP_DBG_TRAIN_VCT		(FZC_FFLP + 0x20148UL)
+#define  FFLP_DBG_TRAIN_VCT_VECTOR	0x00000000ffffffffULL
+
+#define FCRAM_PHY_RD_LAT		(FZC_FFLP + 0x20150UL)
+#define  FCRAM_PHY_RD_LAT_LAT		0x00000000000000ffULL
+
+/* Ethernet TCAM format */
+#define TCAM_ETHKEY0_RESV1		0xffffffffffffff00ULL
+#define TCAM_ETHKEY0_CLASS_CODE		0x00000000000000f8ULL
+#define TCAM_ETHKEY0_CLASS_CODE_SHIFT	3
+#define TCAM_ETHKEY0_RESV2		0x0000000000000007ULL
+#define TCAM_ETHKEY1_FRAME_BYTE0_7(NUM)	(0xff << ((7 - NUM) * 8))
+#define TCAM_ETHKEY2_FRAME_BYTE8	0xff00000000000000ULL
+#define TCAM_ETHKEY2_FRAME_BYTE8_SHIFT	56
+#define TCAM_ETHKEY2_FRAME_BYTE9	0x00ff000000000000ULL
+#define TCAM_ETHKEY2_FRAME_BYTE9_SHIFT	48
+#define TCAM_ETHKEY2_FRAME_BYTE10	0x0000ff0000000000ULL
+#define TCAM_ETHKEY2_FRAME_BYTE10_SHIFT	40
+#define TCAM_ETHKEY2_FRAME_RESV		0x000000ffffffffffULL
+#define TCAM_ETHKEY3_FRAME_RESV		0xffffffffffffffffULL
+
+/* IPV4 TCAM format */
+#define TCAM_V4KEY0_RESV1		0xffffffffffffff00ULL
+#define TCAM_V4KEY0_CLASS_CODE		0x00000000000000f8ULL
+#define TCAM_V4KEY0_CLASS_CODE_SHIFT	3
+#define TCAM_V4KEY0_RESV2		0x0000000000000007ULL
+#define TCAM_V4KEY1_L2RDCNUM		0xf800000000000000ULL
+#define TCAM_V4KEY1_L2RDCNUM_SHIFT	59
+#define TCAM_V4KEY1_NOPORT		0x0400000000000000ULL
+#define TCAM_V4KEY1_RESV		0x03ffffffffffffffULL
+#define TCAM_V4KEY2_RESV		0xffff000000000000ULL
+#define TCAM_V4KEY2_TOS			0x0000ff0000000000ULL
+#define TCAM_V4KEY2_TOS_SHIFT		40
+#define TCAM_V4KEY2_PROTO		0x000000ff00000000ULL
+#define TCAM_V4KEY2_PROTO_SHIFT		32
+#define TCAM_V4KEY2_PORT_SPI		0x00000000ffffffffULL
+#define TCAM_V4KEY2_PORT_SPI_SHIFT	0
+#define TCAM_V4KEY3_SADDR		0xffffffff00000000ULL
+#define TCAM_V4KEY3_SADDR_SHIFT		32
+#define TCAM_V4KEY3_DADDR		0x00000000ffffffffULL
+#define TCAM_V4KEY3_DADDR_SHIFT		0
+
+/* IPV6 TCAM format */
+#define TCAM_V6KEY0_RESV1		0xffffffffffffff00ULL
+#define TCAM_V6KEY0_CLASS_CODE		0x00000000000000f8ULL
+#define TCAM_V6KEY0_CLASS_CODE_SHIFT	3
+#define TCAM_V6KEY0_RESV2		0x0000000000000007ULL
+#define TCAM_V6KEY1_L2RDCNUM		0xf800000000000000ULL
+#define TCAM_V6KEY1_L2RDCNUM_SHIFT	59
+#define TCAM_V6KEY1_NOPORT		0x0400000000000000ULL
+#define TCAM_V6KEY1_RESV		0x03ff000000000000ULL
+#define TCAM_V6KEY1_TOS			0x0000ff0000000000ULL
+#define TCAM_V6KEY1_TOS_SHIFT		40
+#define TCAM_V6KEY1_NEXT_HDR		0x000000ff00000000ULL
+#define TCAM_V6KEY1_NEXT_HDR_SHIFT	32
+#define TCAM_V6KEY1_PORT_SPI		0x00000000ffffffffULL
+#define TCAM_V6KEY1_PORT_SPI_SHIFT	0
+#define TCAM_V6KEY2_ADDR_HIGH		0xffffffffffffffffULL
+#define TCAM_V6KEY3_ADDR_LOW		0xffffffffffffffffULL
+
+#define TCAM_ASSOCDATA_SYNDROME		0x000003fffc000000ULL
+#define TCAM_ASSOCDATA_SYNDROME_SHIFT	26
+#define TCAM_ASSOCDATA_ZFID		0x0000000003ffc000ULL
+#define TCAM_ASSOCDATA_ZFID_SHIFT	14
+#define TCAM_ASSOCDATA_V4_ECC_OK	0x0000000000002000ULL
+#define TCAM_ASSOCDATA_DISC		0x0000000000001000ULL
+#define TCAM_ASSOCDATA_TRES_MASK	0x0000000000000c00ULL
+#define TCAM_ASSOCDATA_TRES_USE_L2RDC	0x0000000000000000ULL
+#define TCAM_ASSOCDATA_TRES_USE_OFFSET	0x0000000000000400ULL
+#define TCAM_ASSOCDATA_TRES_OVR_RDC	0x0000000000000800ULL
+#define TCAM_ASSOCDATA_TRES_OVR_RDC_OFF	0x0000000000000c00ULL
+#define TCAM_ASSOCDATA_RDCTBL		0x0000000000000380ULL
+#define TCAM_ASSOCDATA_RDCTBL_SHIFT	7
+#define TCAM_ASSOCDATA_OFFSET		0x000000000000007cULL
+#define TCAM_ASSOCDATA_OFFSET_SHIFT	2
+#define TCAM_ASSOCDATA_ZFVLD		0x0000000000000002ULL
+#define TCAM_ASSOCDATA_AGE		0x0000000000000001ULL
+
+#define FLOW_KEY(IDX)			(FZC_FFLP + 0x40000UL + (IDX) * 8UL)
+#define  FLOW_KEY_PORT			0x0000000000000200ULL
+#define  FLOW_KEY_L2DA			0x0000000000000100ULL
+#define  FLOW_KEY_VLAN			0x0000000000000080ULL
+#define  FLOW_KEY_IPSA			0x0000000000000040ULL
+#define  FLOW_KEY_IPDA			0x0000000000000020ULL
+#define  FLOW_KEY_PROTO			0x0000000000000010ULL
+#define  FLOW_KEY_L4_0			0x000000000000000cULL
+#define  FLOW_KEY_L4_0_SHIFT		2
+#define  FLOW_KEY_L4_1			0x0000000000000003ULL
+#define  FLOW_KEY_L4_1_SHIFT		0
+
+#define  FLOW_KEY_L4_NONE		0x0
+#define  FLOW_KEY_L4_RESV		0x1
+#define  FLOW_KEY_L4_BYTE12		0x2
+#define  FLOW_KEY_L4_BYTE56		0x3
+
+#define H1POLY				(FZC_FFLP + 0x40060UL)
+#define  H1POLY_INITVAL			0x00000000ffffffffULL
+
+#define H2POLY				(FZC_FFLP + 0x40068UL)
+#define  H2POLY_INITVAL			0x000000000000ffffULL
+
+#define FLW_PRT_SEL(IDX)		(FZC_FFLP + 0x40070UL + (IDX) * 8UL)
+#define  FLW_PRT_SEL_EXT		0x0000000000010000ULL
+#define  FLW_PRT_SEL_MASK		0x0000000000001f00ULL
+#define  FLW_PRT_SEL_MASK_SHIFT		8
+#define  FLW_PRT_SEL_BASE		0x000000000000001fULL
+#define  FLW_PRT_SEL_BASE_SHIFT		0
+
+#define HASH_TBL_ADDR(IDX)		(FFLP + 0x00000UL + (IDX) * 8192UL)
+#define  HASH_TBL_ADDR_AUTOINC		0x0000000000800000ULL
+#define  HASH_TBL_ADDR_ADDR		0x00000000007fffffULL
+
+#define HASH_TBL_DATA(IDX)		(FFLP + 0x00008UL + (IDX) * 8192UL)
+#define  HASH_TBL_DATA_DATA		0xffffffffffffffffULL
+
+/* FCRAM hash table entries are up to 8 64-bit words in size.
+ * The layout of each entry is determined by the settings in the
+ * first word, which is the header.
+ *
+ * The indexing is controllable per partition (there is one partition
+ * per RDC group, thus a total of eight) using the BASE and MASK fields
+ * of FLW_PRT_SEL above.
+ */
+#define FCRAM_SIZE			0x800000
+#define FCRAM_NUM_PARTITIONS		8
+
+/* Generic HASH entry header, used for all non-optimized formats.  */
+#define HASH_HEADER_FMT			0x8000000000000000ULL
+#define HASH_HEADER_EXT			0x4000000000000000ULL
+#define HASH_HEADER_VALID		0x2000000000000000ULL
+#define HASH_HEADER_RESVD		0x1000000000000000ULL
+#define HASH_HEADER_L2_DADDR		0x0ffffffffffff000ULL
+#define HASH_HEADER_L2_DADDR_SHIFT	12
+#define HASH_HEADER_VLAN		0x0000000000000fffULL
+#define HASH_HEADER_VLAN_SHIFT		0
+
+/* Optimized format, just a header with a special layout defined below.
+ * Set FMT and EXT both to zero to indicate this layout is being used.
+ */
+#define HASH_OPT_HEADER_FMT		0x8000000000000000ULL
+#define HASH_OPT_HEADER_EXT		0x4000000000000000ULL
+#define HASH_OPT_HEADER_VALID		0x2000000000000000ULL
+#define HASH_OPT_HEADER_RDCOFF		0x1f00000000000000ULL
+#define HASH_OPT_HEADER_RDCOFF_SHIFT	56
+#define HASH_OPT_HEADER_HASH2		0x00ffff0000000000ULL
+#define HASH_OPT_HEADER_HASH2_SHIFT	40
+#define HASH_OPT_HEADER_RESVD		0x000000ff00000000ULL
+#define HASH_OPT_HEADER_USERINFO	0x00000000ffffffffULL
+#define HASH_OPT_HEADER_USERINFO_SHIFT	0
+
+/* Port and protocol word used for ipv4 and ipv6 layouts.  */
+#define HASH_PORT_DPORT			0xffff000000000000ULL
+#define HASH_PORT_DPORT_SHIFT		48
+#define HASH_PORT_SPORT			0x0000ffff00000000ULL
+#define HASH_PORT_SPORT_SHIFT		32
+#define HASH_PORT_PROTO			0x00000000ff000000ULL
+#define HASH_PORT_PROTO_SHIFT		24
+#define HASH_PORT_PORT_OFF		0x0000000000c00000ULL
+#define HASH_PORT_PORT_OFF_SHIFT	22
+#define HASH_PORT_PORT_RESV		0x00000000003fffffULL
+
+/* Action word used for ipv4 and ipv6 layouts.  */
+#define HASH_ACTION_RESV1		0xe000000000000000ULL
+#define HASH_ACTION_RDCOFF		0x1f00000000000000ULL
+#define HASH_ACTION_RDCOFF_SHIFT	56
+#define HASH_ACTION_ZFVALID		0x0080000000000000ULL
+#define HASH_ACTION_RESV2		0x0070000000000000ULL
+#define HASH_ACTION_ZFID		0x000fff0000000000ULL
+#define HASH_ACTION_ZFID_SHIFT		40
+#define HASH_ACTION_RESV3		0x000000ff00000000ULL
+#define HASH_ACTION_USERINFO		0x00000000ffffffffULL
+#define HASH_ACTION_USERINFO_SHIFT	0
+
+/* IPV4 address word.  Addresses are in network endian. */
+#define HASH_IP4ADDR_SADDR		0xffffffff00000000ULL
+#define HASH_IP4ADDR_SADDR_SHIFT	32
+#define HASH_IP4ADDR_DADDR		0x00000000ffffffffULL
+#define HASH_IP4ADDR_DADDR_SHIFT	0
+
+/* IPV6 address layout is 4 words, first two are saddr, next two
+ * are daddr.  Addresses are in network endian.
+ */
+
+struct fcram_hash_opt {
+	u64	header;
+};
+
+/* EXT=1, FMT=0 */
+struct fcram_hash_ipv4 {
+	u64	header;
+	u64	addrs;
+	u64	ports;
+	u64	action;
+};
+
+/* EXT=1, FMT=1 */
+struct fcram_hash_ipv6 {
+	u64	header;
+	u64	addrs[4];
+	u64	ports;
+	u64	action;
+};
+
+#define HASH_TBL_DATA_LOG(IDX)		(FFLP + 0x00010UL + (IDX) * 8192UL)
+#define  HASH_TBL_DATA_LOG_ERR		0x0000000080000000ULL
+#define  HASH_TBL_DATA_LOG_ADDR		0x000000007fffff00ULL
+#define  HASH_TBL_DATA_LOG_SYNDROME	0x00000000000000ffULL
+
+#define RX_DMA_CK_DIV			(FZC_DMC + 0x00000UL)
+#define  RX_DMA_CK_DIV_CNT		0x000000000000ffffULL
+
+#define DEF_RDC(IDX)			(FZC_DMC + 0x00008UL + (IDX) * 0x8UL)
+#define  DEF_RDC_VAL			0x000000000000001fULL
+
+#define PT_DRR_WT(IDX)			(FZC_DMC + 0x00028UL + (IDX) * 0x8UL)
+#define  PT_DRR_WT_VAL			0x000000000000ffffULL
+
+#define PT_DRR_WEIGHT_DEFAULT_10G	0x0400
+#define PT_DRR_WEIGHT_DEFAULT_1G	0x0066
+
+#define PT_USE(IDX)			(FZC_DMC + 0x00048UL + (IDX) * 0x8UL)
+#define  PT_USE_CNT			0x00000000000fffffULL
+
+#define RED_RAN_INIT			(FZC_DMC + 0x00068UL)
+#define  RED_RAN_INIT_OPMODE		0x0000000000010000ULL
+#define  RED_RAN_INIT_VAL		0x000000000000ffffULL
+
+#define RX_ADDR_MD			(FZC_DMC + 0x00070UL)
+#define  RX_ADDR_MD_DBG_PT_MUX_SEL	0x000000000000000cULL
+#define  RX_ADDR_MD_RAM_ACC		0x0000000000000002ULL
+#define  RX_ADDR_MD_MODE32		0x0000000000000001ULL
+
+#define RDMC_PRE_PAR_ERR		(FZC_DMC + 0x00078UL)
+#define  RDMC_PRE_PAR_ERR_ERR		0x0000000000008000ULL
+#define  RDMC_PRE_PAR_ERR_MERR		0x0000000000004000ULL
+#define  RDMC_PRE_PAR_ERR_ADDR		0x00000000000000ffULL
+
+#define RDMC_SHA_PAR_ERR		(FZC_DMC + 0x00080UL)
+#define  RDMC_SHA_PAR_ERR_ERR		0x0000000000008000ULL
+#define  RDMC_SHA_PAR_ERR_MERR		0x0000000000004000ULL
+#define  RDMC_SHA_PAR_ERR_ADDR		0x00000000000000ffULL
+
+#define RDMC_MEM_ADDR			(FZC_DMC + 0x00088UL)
+#define  RDMC_MEM_ADDR_PRE_SHAD		0x0000000000000100ULL
+#define  RDMC_MEM_ADDR_ADDR		0x00000000000000ffULL
+
+#define RDMC_MEM_DAT0			(FZC_DMC + 0x00090UL)
+#define  RDMC_MEM_DAT0_DATA		0x00000000ffffffffULL /* bits 31:0 */
+
+#define RDMC_MEM_DAT1			(FZC_DMC + 0x00098UL)
+#define  RDMC_MEM_DAT1_DATA		0x00000000ffffffffULL /* bits 63:32 */
+
+#define RDMC_MEM_DAT2			(FZC_DMC + 0x000a0UL)
+#define  RDMC_MEM_DAT2_DATA		0x00000000ffffffffULL /* bits 95:64 */
+
+#define RDMC_MEM_DAT3			(FZC_DMC + 0x000a8UL)
+#define  RDMC_MEM_DAT3_DATA		0x00000000ffffffffULL /* bits 127:96 */
+
+#define RDMC_MEM_DAT4			(FZC_DMC + 0x000b0UL)
+#define  RDMC_MEM_DAT4_DATA		0x00000000000fffffULL /* bits 147:128 */
+
+#define RX_CTL_DAT_FIFO_STAT			(FZC_DMC + 0x000b8UL)
+#define  RX_CTL_DAT_FIFO_STAT_ID_MISMATCH	0x0000000000000100ULL
+#define  RX_CTL_DAT_FIFO_STAT_ZCP_EOP_ERR	0x00000000000000f0ULL
+#define  RX_CTL_DAT_FIFO_STAT_IPP_EOP_ERR	0x000000000000000fULL
+
+#define RX_CTL_DAT_FIFO_MASK			(FZC_DMC + 0x000c0UL)
+#define  RX_CTL_DAT_FIFO_MASK_ID_MISMATCH	0x0000000000000100ULL
+#define  RX_CTL_DAT_FIFO_MASK_ZCP_EOP_ERR	0x00000000000000f0ULL
+#define  RX_CTL_DAT_FIFO_MASK_IPP_EOP_ERR	0x000000000000000fULL
+
+#define RDMC_TRAINING_VECTOR			(FZC_DMC + 0x000c8UL)
+#define  RDMC_TRAINING_VECTOR_TRAINING_VECTOR	0x00000000ffffffffULL
+
+#define RX_CTL_DAT_FIFO_STAT_DBG		(FZC_DMC + 0x000d0UL)
+#define  RX_CTL_DAT_FIFO_STAT_DBG_ID_MISMATCH	0x0000000000000100ULL
+#define  RX_CTL_DAT_FIFO_STAT_DBG_ZCP_EOP_ERR	0x00000000000000f0ULL
+#define  RX_CTL_DAT_FIFO_STAT_DBG_IPP_EOP_ERR	0x000000000000000fULL
+
+#define RDC_TBL(TBL,SLOT)		(FZC_ZCP + 0x10000UL + \
+					 (TBL) * (8UL * 16UL) + \
+					 (SLOT) * 8UL)
+#define  RDC_TBL_RDC			0x000000000000000fULL
+
+#define RX_LOG_PAGE_VLD(IDX)		(FZC_DMC + 0x20000UL + (IDX) * 0x40UL)
+#define  RX_LOG_PAGE_VLD_FUNC		0x000000000000000cULL
+#define  RX_LOG_PAGE_VLD_FUNC_SHIFT	2
+#define  RX_LOG_PAGE_VLD_PAGE1		0x0000000000000002ULL
+#define  RX_LOG_PAGE_VLD_PAGE0		0x0000000000000001ULL
+
+#define RX_LOG_MASK1(IDX)		(FZC_DMC + 0x20008UL + (IDX) * 0x40UL)
+#define  RX_LOG_MASK1_MASK		0x00000000ffffffffULL
+
+#define RX_LOG_VAL1(IDX)		(FZC_DMC + 0x20010UL + (IDX) * 0x40UL)
+#define  RX_LOG_VAL1_VALUE		0x00000000ffffffffULL
+
+#define RX_LOG_MASK2(IDX)		(FZC_DMC + 0x20018UL + (IDX) * 0x40UL)
+#define  RX_LOG_MASK2_MASK		0x00000000ffffffffULL
+
+#define RX_LOG_VAL2(IDX)		(FZC_DMC + 0x20020UL + (IDX) * 0x40UL)
+#define  RX_LOG_VAL2_VALUE		0x00000000ffffffffULL
+
+#define RX_LOG_PAGE_RELO1(IDX)		(FZC_DMC + 0x20028UL + (IDX) * 0x40UL)
+#define  RX_LOG_PAGE_RELO1_RELO		0x00000000ffffffffULL
+
+#define RX_LOG_PAGE_RELO2(IDX)		(FZC_DMC + 0x20030UL + (IDX) * 0x40UL)
+#define  RX_LOG_PAGE_RELO2_RELO		0x00000000ffffffffULL
+
+#define RX_LOG_PAGE_HDL(IDX)		(FZC_DMC + 0x20038UL + (IDX) * 0x40UL)
+#define  RX_LOG_PAGE_HDL_HANDLE		0x00000000000fffffULL
+
+#define TX_LOG_PAGE_VLD(IDX)		(FZC_DMC + 0x40000UL + (IDX) * 0x200UL)
+#define  TX_LOG_PAGE_VLD_FUNC		0x000000000000000cULL
+#define  TX_LOG_PAGE_VLD_FUNC_SHIFT	2
+#define  TX_LOG_PAGE_VLD_PAGE1		0x0000000000000002ULL
+#define  TX_LOG_PAGE_VLD_PAGE0		0x0000000000000001ULL
+
+#define TX_LOG_MASK1(IDX)		(FZC_DMC + 0x40008UL + (IDX) * 0x200UL)
+#define  TX_LOG_MASK1_MASK		0x00000000ffffffffULL
+
+#define TX_LOG_VAL1(IDX)		(FZC_DMC + 0x40010UL + (IDX) * 0x200UL)
+#define  TX_LOG_VAL1_VALUE		0x00000000ffffffffULL
+
+#define TX_LOG_MASK2(IDX)		(FZC_DMC + 0x40018UL + (IDX) * 0x200UL)
+#define  TX_LOG_MASK2_MASK		0x00000000ffffffffULL
+
+#define TX_LOG_VAL2(IDX)		(FZC_DMC + 0x40020UL + (IDX) * 0x200UL)
+#define  TX_LOG_VAL2_VALUE		0x00000000ffffffffULL
+
+#define TX_LOG_PAGE_RELO1(IDX)		(FZC_DMC + 0x40028UL + (IDX) * 0x200UL)
+#define  TX_LOG_PAGE_RELO1_RELO		0x00000000ffffffffULL
+
+#define TX_LOG_PAGE_RELO2(IDX)		(FZC_DMC + 0x40030UL + (IDX) * 0x200UL)
+#define  TX_LOG_PAGE_RELO2_RELO		0x00000000ffffffffULL
+
+#define TX_LOG_PAGE_HDL(IDX)		(FZC_DMC + 0x40038UL + (IDX) * 0x200UL)
+#define  TX_LOG_PAGE_HDL_HANDLE		0x00000000000fffffULL
+
+#define TX_ADDR_MD			(FZC_DMC + 0x45000UL)
+#define  TX_ADDR_MD_MODE32		0x0000000000000001ULL
+
+#define RDC_RED_PARA(IDX)		(FZC_DMC + 0x30000UL + (IDX) * 0x40UL)
+#define  RDC_RED_PARA_THRE_SYN		0x00000000fff00000ULL
+#define  RDC_RED_PARA_THRE_SYN_SHIFT	20
+#define  RDC_RED_PARA_WIN_SYN		0x00000000000f0000ULL
+#define  RDC_RED_PARA_WIN_SYN_SHIFT	16
+#define  RDC_RED_PARA_THRE		0x000000000000fff0ULL
+#define  RDC_RED_PARA_THRE_SHIFT	4
+#define  RDC_RED_PARA_WIN		0x000000000000000fULL
+#define  RDC_RED_PARA_WIN_SHIFT		0
+
+#define RED_DIS_CNT(IDX)		(FZC_DMC + 0x30008UL + (IDX) * 0x40UL)
+#define  RED_DIS_CNT_OFLOW		0x0000000000010000ULL
+#define  RED_DIS_CNT_COUNT		0x000000000000ffffULL
+
+#define IPP_CFIG			(FZC_IPP + 0x00000UL)
+#define  IPP_CFIG_SOFT_RST		0x0000000080000000ULL
+#define  IPP_CFIG_IP_MAX_PKT		0x0000000001ffff00ULL
+#define  IPP_CFIG_IP_MAX_PKT_SHIFT	8
+#define  IPP_CFIG_FFLP_CS_PIO_W		0x0000000000000080ULL
+#define  IPP_CFIG_PFIFO_PIO_W		0x0000000000000040ULL
+#define  IPP_CFIG_DFIFO_PIO_W		0x0000000000000020ULL
+#define  IPP_CFIG_CKSUM_EN		0x0000000000000010ULL
+#define  IPP_CFIG_DROP_BAD_CRC		0x0000000000000008ULL
+#define  IPP_CFIG_DFIFO_ECC_EN		0x0000000000000004ULL
+#define  IPP_CFIG_DEBUG_BUS_OUT_EN	0x0000000000000002ULL
+#define  IPP_CFIG_IPP_ENABLE		0x0000000000000001ULL
+
+#define IPP_PKT_DIS			(FZC_IPP + 0x00020UL)
+#define  IPP_PKT_DIS_COUNT		0x0000000000003fffULL
+
+#define IPP_BAD_CS_CNT			(FZC_IPP + 0x00028UL)
+#define  IPP_BAD_CS_CNT_COUNT		0x0000000000003fffULL
+
+#define IPP_ECC				(FZC_IPP + 0x00030UL)
+#define  IPP_ECC_COUNT			0x00000000000000ffULL
+
+#define IPP_INT_STAT			(FZC_IPP + 0x00040UL)
+#define  IPP_INT_STAT_SOP_MISS		0x0000000080000000ULL
+#define  IPP_INT_STAT_EOP_MISS		0x0000000040000000ULL
+#define  IPP_INT_STAT_DFIFO_UE		0x0000000030000000ULL
+#define  IPP_INT_STAT_DFIFO_CE		0x000000000c000000ULL
+#define  IPP_INT_STAT_DFIFO_ECC		0x0000000003000000ULL
+#define  IPP_INT_STAT_DFIFO_ECC_IDX	0x00000000007ff000ULL
+#define  IPP_INT_STAT_PFIFO_PERR	0x0000000000000800ULL
+#define  IPP_INT_STAT_ECC_ERR_MAX	0x0000000000000400ULL
+#define  IPP_INT_STAT_PFIFO_ERR_IDX	0x00000000000003f0ULL
+#define  IPP_INT_STAT_PFIFO_OVER	0x0000000000000008ULL
+#define  IPP_INT_STAT_PFIFO_UND		0x0000000000000004ULL
+#define  IPP_INT_STAT_BAD_CS_MX		0x0000000000000002ULL
+#define  IPP_INT_STAT_PKT_DIS_MX	0x0000000000000001ULL
+#define  IPP_INT_STAT_ALL		0x00000000ff7fffffULL
+
+#define IPP_MSK				(FZC_IPP + 0x00048UL)
+#define  IPP_MSK_ECC_ERR_MX		0x0000000000000080ULL
+#define  IPP_MSK_DFIFO_EOP_SOP		0x0000000000000040ULL
+#define  IPP_MSK_DFIFO_UC		0x0000000000000020ULL
+#define  IPP_MSK_PFIFO_PAR		0x0000000000000010ULL
+#define  IPP_MSK_PFIFO_OVER		0x0000000000000008ULL
+#define  IPP_MSK_PFIFO_UND		0x0000000000000004ULL
+#define  IPP_MSK_BAD_CS			0x0000000000000002ULL
+#define  IPP_MSK_PKT_DIS_CNT		0x0000000000000001ULL
+#define  IPP_MSK_ALL			0x00000000000000ffULL
+
+#define IPP_PFIFO_RD0			(FZC_IPP + 0x00060UL)
+#define  IPP_PFIFO_RD0_DATA		0x00000000ffffffffULL /* bits 31:0 */
+
+#define IPP_PFIFO_RD1			(FZC_IPP + 0x00068UL)
+#define  IPP_PFIFO_RD1_DATA		0x00000000ffffffffULL /* bits 63:32 */
+
+#define IPP_PFIFO_RD2			(FZC_IPP + 0x00070UL)
+#define  IPP_PFIFO_RD2_DATA		0x00000000ffffffffULL /* bits 95:64 */
+
+#define IPP_PFIFO_RD3			(FZC_IPP + 0x00078UL)
+#define  IPP_PFIFO_RD3_DATA		0x00000000ffffffffULL /* bits 127:96 */
+
+#define IPP_PFIFO_RD4			(FZC_IPP + 0x00080UL)
+#define  IPP_PFIFO_RD4_DATA		0x00000000ffffffffULL /* bits 145:128 */
+
+#define IPP_PFIFO_WR0			(FZC_IPP + 0x00088UL)
+#define  IPP_PFIFO_WR0_DATA		0x00000000ffffffffULL /* bits 31:0 */
+
+#define IPP_PFIFO_WR1			(FZC_IPP + 0x00090UL)
+#define  IPP_PFIFO_WR1_DATA		0x00000000ffffffffULL /* bits 63:32 */
+
+#define IPP_PFIFO_WR2			(FZC_IPP + 0x00098UL)
+#define  IPP_PFIFO_WR2_DATA		0x00000000ffffffffULL /* bits 95:64 */
+
+#define IPP_PFIFO_WR3			(FZC_IPP + 0x000a0UL)
+#define  IPP_PFIFO_WR3_DATA		0x00000000ffffffffULL /* bits 127:96 */
+
+#define IPP_PFIFO_WR4			(FZC_IPP + 0x000a8UL)
+#define  IPP_PFIFO_WR4_DATA		0x00000000ffffffffULL /* bits 145:128 */
+
+#define IPP_PFIFO_RD_PTR		(FZC_IPP + 0x000b0UL)
+#define  IPP_PFIFO_RD_PTR_PTR		0x000000000000003fULL
+
+#define IPP_PFIFO_WR_PTR		(FZC_IPP + 0x000b8UL)
+#define  IPP_PFIFO_WR_PTR_PTR		0x000000000000007fULL
+
+#define IPP_DFIFO_RD0			(FZC_IPP + 0x000c0UL)
+#define  IPP_DFIFO_RD0_DATA		0x00000000ffffffffULL /* bits 31:0 */
+
+#define IPP_DFIFO_RD1			(FZC_IPP + 0x000c8UL)
+#define  IPP_DFIFO_RD1_DATA		0x00000000ffffffffULL /* bits 63:32 */
+
+#define IPP_DFIFO_RD2			(FZC_IPP + 0x000d0UL)
+#define  IPP_DFIFO_RD2_DATA		0x00000000ffffffffULL /* bits 95:64 */
+
+#define IPP_DFIFO_RD3			(FZC_IPP + 0x000d8UL)
+#define  IPP_DFIFO_RD3_DATA		0x00000000ffffffffULL /* bits 127:96 */
+
+#define IPP_DFIFO_RD4			(FZC_IPP + 0x000e0UL)
+#define  IPP_DFIFO_RD4_DATA		0x00000000ffffffffULL /* bits 145:128 */
+
+#define IPP_DFIFO_WR0			(FZC_IPP + 0x000e8UL)
+#define  IPP_DFIFO_WR0_DATA		0x00000000ffffffffULL /* bits 31:0 */
+
+#define IPP_DFIFO_WR1			(FZC_IPP + 0x000f0UL)
+#define  IPP_DFIFO_WR1_DATA		0x00000000ffffffffULL /* bits 63:32 */
+
+#define IPP_DFIFO_WR2			(FZC_IPP + 0x000f8UL)
+#define  IPP_DFIFO_WR2_DATA		0x00000000ffffffffULL /* bits 95:64 */
+
+#define IPP_DFIFO_WR3			(FZC_IPP + 0x00100UL)
+#define  IPP_DFIFO_WR3_DATA		0x00000000ffffffffULL /* bits 127:96 */
+
+#define IPP_DFIFO_WR4			(FZC_IPP + 0x00108UL)
+#define  IPP_DFIFO_WR4_DATA		0x00000000ffffffffULL /* bits 145:128 */
+
+#define IPP_DFIFO_RD_PTR		(FZC_IPP + 0x00110UL)
+#define  IPP_DFIFO_RD_PTR_PTR		0x0000000000000fffULL
+
+#define IPP_DFIFO_WR_PTR		(FZC_IPP + 0x00118UL)
+#define  IPP_DFIFO_WR_PTR_PTR		0x0000000000000fffULL
+
+#define IPP_SM				(FZC_IPP + 0x00120UL)
+#define  IPP_SM_SM			0x00000000ffffffffULL
+
+#define IPP_CS_STAT			(FZC_IPP + 0x00128UL)
+#define  IPP_CS_STAT_BCYC_CNT		0x00000000ff000000ULL
+#define  IPP_CS_STAT_IP_LEN		0x0000000000fff000ULL
+#define  IPP_CS_STAT_CS_FAIL		0x0000000000000800ULL
+#define  IPP_CS_STAT_TERM		0x0000000000000400ULL
+#define  IPP_CS_STAT_BAD_NUM		0x0000000000000200ULL
+#define  IPP_CS_STAT_CS_STATE		0x00000000000001ffULL
+
+#define IPP_FFLP_CS_INFO		(FZC_IPP + 0x00130UL)
+#define  IPP_FFLP_CS_INFO_PKT_ID	0x0000000000003c00ULL
+#define  IPP_FFLP_CS_INFO_L4_PROTO	0x0000000000000300ULL
+#define  IPP_FFLP_CS_INFO_V4_HD_LEN	0x00000000000000f0ULL
+#define  IPP_FFLP_CS_INFO_L3_VER	0x000000000000000cULL
+#define  IPP_FFLP_CS_INFO_L2_OP		0x0000000000000003ULL
+
+#define IPP_DBG_SEL			(FZC_IPP + 0x00138UL)
+#define  IPP_DBG_SEL_SEL		0x000000000000000fULL
+
+#define IPP_DFIFO_ECC_SYND		(FZC_IPP + 0x00140UL)
+#define  IPP_DFIFO_ECC_SYND_SYND	0x000000000000ffffULL
+
+#define IPP_DFIFO_EOP_RD_PTR		(FZC_IPP + 0x00148UL)
+#define  IPP_DFIFO_EOP_RD_PTR_PTR	0x0000000000000fffULL
+
+#define IPP_ECC_CTL			(FZC_IPP + 0x00150UL)
+#define  IPP_ECC_CTL_DIS_DBL		0x0000000080000000ULL
+#define  IPP_ECC_CTL_COR_DBL		0x0000000000020000ULL
+#define  IPP_ECC_CTL_COR_SNG		0x0000000000010000ULL
+#define  IPP_ECC_CTL_COR_ALL		0x0000000000000400ULL
+#define  IPP_ECC_CTL_COR_1		0x0000000000000100ULL
+#define  IPP_ECC_CTL_COR_LST		0x0000000000000004ULL
+#define  IPP_ECC_CTL_COR_SND		0x0000000000000002ULL
+#define  IPP_ECC_CTL_COR_FSR		0x0000000000000001ULL
+
+#define NIU_DFIFO_ENTRIES		1024
+#define ATLAS_P0_P1_DFIFO_ENTRIES	2048
+#define ATLAS_P2_P3_DFIFO_ENTRIES	1024
+
+#define ZCP_CFIG			(FZC_ZCP + 0x00000UL)
+#define  ZCP_CFIG_ZCP_32BIT_MODE	0x0000000001000000ULL
+#define  ZCP_CFIG_ZCP_DEBUG_SEL		0x0000000000ff0000ULL
+#define  ZCP_CFIG_DMA_TH		0x000000000000ffe0ULL
+#define  ZCP_CFIG_ECC_CHK_DIS		0x0000000000000010ULL
+#define  ZCP_CFIG_PAR_CHK_DIS		0x0000000000000008ULL
+#define  ZCP_CFIG_DIS_BUFF_RSP_IF	0x0000000000000004ULL
+#define  ZCP_CFIG_DIS_BUFF_REQ_IF	0x0000000000000002ULL
+#define  ZCP_CFIG_ZC_ENABLE		0x0000000000000001ULL
+
+#define ZCP_INT_STAT			(FZC_ZCP + 0x00008UL)
+#define  ZCP_INT_STAT_RRFIFO_UNDERRUN	0x0000000000008000ULL
+#define  ZCP_INT_STAT_RRFIFO_OVERRUN	0x0000000000004000ULL
+#define  ZCP_INT_STAT_RSPFIFO_UNCOR_ERR	0x0000000000001000ULL
+#define  ZCP_INT_STAT_BUFFER_OVERFLOW	0x0000000000000800ULL
+#define  ZCP_INT_STAT_STAT_TBL_PERR	0x0000000000000400ULL
+#define  ZCP_INT_STAT_DYN_TBL_PERR	0x0000000000000200ULL
+#define  ZCP_INT_STAT_BUF_TBL_PERR	0x0000000000000100ULL
+#define  ZCP_INT_STAT_TT_PROGRAM_ERR	0x0000000000000080ULL
+#define  ZCP_INT_STAT_RSP_TT_INDEX_ERR	0x0000000000000040ULL
+#define  ZCP_INT_STAT_SLV_TT_INDEX_ERR	0x0000000000000020ULL
+#define  ZCP_INT_STAT_ZCP_TT_INDEX_ERR	0x0000000000000010ULL
+#define  ZCP_INT_STAT_CFIFO_ECC3	0x0000000000000008ULL
+#define  ZCP_INT_STAT_CFIFO_ECC2	0x0000000000000004ULL
+#define  ZCP_INT_STAT_CFIFO_ECC1	0x0000000000000002ULL
+#define  ZCP_INT_STAT_CFIFO_ECC0	0x0000000000000001ULL
+#define  ZCP_INT_STAT_ALL		0x000000000000ffffULL
+
+#define ZCP_INT_MASK			(FZC_ZCP + 0x00010UL)
+#define  ZCP_INT_MASK_RRFIFO_UNDERRUN	0x0000000000008000ULL
+#define  ZCP_INT_MASK_RRFIFO_OVERRUN	0x0000000000004000ULL
+#define  ZCP_INT_MASK_LOJ		0x0000000000002000ULL
+#define  ZCP_INT_MASK_RSPFIFO_UNCOR_ERR	0x0000000000001000ULL
+#define  ZCP_INT_MASK_BUFFER_OVERFLOW	0x0000000000000800ULL
+#define  ZCP_INT_MASK_STAT_TBL_PERR	0x0000000000000400ULL
+#define  ZCP_INT_MASK_DYN_TBL_PERR	0x0000000000000200ULL
+#define  ZCP_INT_MASK_BUF_TBL_PERR	0x0000000000000100ULL
+#define  ZCP_INT_MASK_TT_PROGRAM_ERR	0x0000000000000080ULL
+#define  ZCP_INT_MASK_RSP_TT_INDEX_ERR	0x0000000000000040ULL
+#define  ZCP_INT_MASK_SLV_TT_INDEX_ERR	0x0000000000000020ULL
+#define  ZCP_INT_MASK_ZCP_TT_INDEX_ERR	0x0000000000000010ULL
+#define  ZCP_INT_MASK_CFIFO_ECC3	0x0000000000000008ULL
+#define  ZCP_INT_MASK_CFIFO_ECC2	0x0000000000000004ULL
+#define  ZCP_INT_MASK_CFIFO_ECC1	0x0000000000000002ULL
+#define  ZCP_INT_MASK_CFIFO_ECC0	0x0000000000000001ULL
+#define  ZCP_INT_MASK_ALL		0x000000000000ffffULL
+
+#define BAM4BUF				(FZC_ZCP + 0x00018UL)
+#define  BAM4BUF_LOJ			0x0000000080000000ULL
+#define  BAM4BUF_EN_CK			0x0000000040000000ULL
+#define  BAM4BUF_IDX_END0		0x000000003ff00000ULL
+#define  BAM4BUF_IDX_ST0		0x00000000000ffc00ULL
+#define  BAM4BUF_OFFSET0		0x00000000000003ffULL
+
+#define BAM8BUF				(FZC_ZCP + 0x00020UL)
+#define  BAM8BUF_LOJ			0x0000000080000000ULL
+#define  BAM8BUF_EN_CK			0x0000000040000000ULL
+#define  BAM8BUF_IDX_END1		0x000000003ff00000ULL
+#define  BAM8BUF_IDX_ST1		0x00000000000ffc00ULL
+#define  BAM8BUF_OFFSET1		0x00000000000003ffULL
+
+#define BAM16BUF			(FZC_ZCP + 0x00028UL)
+#define  BAM16BUF_LOJ			0x0000000080000000ULL
+#define  BAM16BUF_EN_CK			0x0000000040000000ULL
+#define  BAM16BUF_IDX_END2		0x000000003ff00000ULL
+#define  BAM16BUF_IDX_ST2		0x00000000000ffc00ULL
+#define  BAM16BUF_OFFSET2		0x00000000000003ffULL
+
+#define BAM32BUF			(FZC_ZCP + 0x00030UL)
+#define  BAM32BUF_LOJ			0x0000000080000000ULL
+#define  BAM32BUF_EN_CK			0x0000000040000000ULL
+#define  BAM32BUF_IDX_END3		0x000000003ff00000ULL
+#define  BAM32BUF_IDX_ST3		0x00000000000ffc00ULL
+#define  BAM32BUF_OFFSET3		0x00000000000003ffULL
+
+#define DST4BUF				(FZC_ZCP + 0x00038UL)
+#define  DST4BUF_DS_OFFSET0		0x00000000000003ffULL
+
+#define DST8BUF				(FZC_ZCP + 0x00040UL)
+#define  DST8BUF_DS_OFFSET1		0x00000000000003ffULL
+
+#define DST16BUF			(FZC_ZCP + 0x00048UL)
+#define  DST16BUF_DS_OFFSET2		0x00000000000003ffULL
+
+#define DST32BUF			(FZC_ZCP + 0x00050UL)
+#define  DST32BUF_DS_OFFSET3		0x00000000000003ffULL
+
+#define ZCP_RAM_DATA0			(FZC_ZCP + 0x00058UL)
+#define  ZCP_RAM_DATA0_DAT0		0x00000000ffffffffULL
+
+#define ZCP_RAM_DATA1			(FZC_ZCP + 0x00060UL)
+#define  ZCP_RAM_DAT10_DAT1		0x00000000ffffffffULL
+
+#define ZCP_RAM_DATA2			(FZC_ZCP + 0x00068UL)
+#define  ZCP_RAM_DATA2_DAT2		0x00000000ffffffffULL
+
+#define ZCP_RAM_DATA3			(FZC_ZCP + 0x00070UL)
+#define  ZCP_RAM_DATA3_DAT3		0x00000000ffffffffULL
+
+#define ZCP_RAM_DATA4			(FZC_ZCP + 0x00078UL)
+#define  ZCP_RAM_DATA4_DAT4		0x00000000000000ffULL
+
+#define ZCP_RAM_BE			(FZC_ZCP + 0x00080UL)
+#define  ZCP_RAM_BE_VAL			0x000000000001ffffULL
+
+#define ZCP_RAM_ACC			(FZC_ZCP + 0x00088UL)
+#define  ZCP_RAM_ACC_BUSY		0x0000000080000000ULL
+#define  ZCP_RAM_ACC_READ		0x0000000040000000ULL
+#define  ZCP_RAM_ACC_WRITE		0x0000000000000000ULL
+#define  ZCP_RAM_ACC_LOJ		0x0000000020000000ULL
+#define  ZCP_RAM_ACC_ZFCID		0x000000001ffe0000ULL
+#define  ZCP_RAM_ACC_ZFCID_SHIFT	17
+#define  ZCP_RAM_ACC_RAM_SEL		0x000000000001f000ULL
+#define  ZCP_RAM_ACC_RAM_SEL_SHIFT	12
+#define  ZCP_RAM_ACC_CFIFOADDR		0x0000000000000fffULL
+#define  ZCP_RAM_ACC_CFIFOADDR_SHIFT	0
+
+#define ZCP_RAM_SEL_BAM(INDEX)		(0x00 + (INDEX))
+#define ZCP_RAM_SEL_TT_STATIC		0x08
+#define ZCP_RAM_SEL_TT_DYNAMIC		0x09
+#define ZCP_RAM_SEL_CFIFO(PORT)		(0x10 + (PORT))
+
+#define NIU_CFIFO_ENTRIES		1024
+#define ATLAS_P0_P1_CFIFO_ENTRIES	2048
+#define ATLAS_P2_P3_CFIFO_ENTRIES	1024
+
+#define CHK_BIT_DATA			(FZC_ZCP + 0x00090UL)
+#define  CHK_BIT_DATA_DATA		0x000000000000ffffULL
+
+#define RESET_CFIFO			(FZC_ZCP + 0x00098UL)
+#define  RESET_CFIFO_RST(PORT)		(0x1 << (PORT))
+
+#define CFIFO_ECC(PORT)			(FZC_ZCP + 0x000a0UL + (PORT) * 8UL)
+#define  CFIFO_ECC_DIS_DBLBIT_ERR	0x0000000080000000ULL
+#define  CFIFO_ECC_DBLBIT_ERR		0x0000000000020000ULL
+#define  CFIFO_ECC_SINGLEBIT_ERR	0x0000000000010000ULL
+#define  CFIFO_ECC_ALL_PKT		0x0000000000000400ULL
+#define  CFIFO_ECC_LAST_LINE		0x0000000000000004ULL
+#define  CFIFO_ECC_2ND_LINE		0x0000000000000002ULL
+#define  CFIFO_ECC_1ST_LINE		0x0000000000000001ULL
+
+#define ZCP_TRAINING_VECTOR		(FZC_ZCP + 0x000c0UL)
+#define  ZCP_TRAINING_VECTOR_VECTOR	0x00000000ffffffffULL
+
+#define ZCP_STATE_MACHINE		(FZC_ZCP + 0x000c8UL)
+#define  ZCP_STATE_MACHINE_SM		0x00000000ffffffffULL
+
+/* Same bits as ZCP_INT_STAT */
+#define ZCP_INT_STAT_TEST		(FZC_ZCP + 0x00108UL)
+
+#define RXDMA_CFIG1(IDX)		(DMC + 0x00000UL + (IDX) * 0x200UL)
+#define  RXDMA_CFIG1_EN			0x0000000080000000ULL
+#define  RXDMA_CFIG1_RST		0x0000000040000000ULL
+#define  RXDMA_CFIG1_QST		0x0000000020000000ULL
+#define  RXDMA_CFIG1_MBADDR_H		0x0000000000000fffULL /* mboxaddr 43:32 */
+
+#define RXDMA_CFIG2(IDX)		(DMC + 0x00008UL + (IDX) * 0x200UL)
+#define  RXDMA_CFIG2_MBADDR_L		0x00000000ffffffc0ULL /* mboxaddr 31:6 */
+#define  RXDMA_CFIG2_OFFSET		0x0000000000000006ULL
+#define  RXDMA_CFIG2_OFFSET_SHIFT	1
+#define  RXDMA_CFIG2_FULL_HDR		0x0000000000000001ULL
+
+#define RBR_CFIG_A(IDX)			(DMC + 0x00010UL + (IDX) * 0x200UL)
+#define  RBR_CFIG_A_LEN			0xffff000000000000ULL
+#define  RBR_CFIG_A_LEN_SHIFT		48
+#define  RBR_CFIG_A_STADDR_BASE		0x00000ffffffc0000ULL
+#define  RBR_CFIG_A_STADDR		0x000000000003ffc0ULL
+
+#define RBR_CFIG_B(IDX)			(DMC + 0x00018UL + (IDX) * 0x200UL)
+#define  RBR_CFIG_B_BLKSIZE		0x0000000003000000ULL
+#define  RBR_CFIG_B_BLKSIZE_SHIFT	24
+#define  RBR_CFIG_B_VLD2		0x0000000000800000ULL
+#define  RBR_CFIG_B_BUFSZ2		0x0000000000030000ULL
+#define  RBR_CFIG_B_BUFSZ2_SHIFT	16
+#define  RBR_CFIG_B_VLD1		0x0000000000008000ULL
+#define  RBR_CFIG_B_BUFSZ1		0x0000000000000300ULL
+#define  RBR_CFIG_B_BUFSZ1_SHIFT	8
+#define  RBR_CFIG_B_VLD0		0x0000000000000080ULL
+#define  RBR_CFIG_B_BUFSZ0		0x0000000000000003ULL
+#define  RBR_CFIG_B_BUFSZ0_SHIFT	0
+
+#define RBR_BLKSIZE_4K			0x0
+#define RBR_BLKSIZE_8K			0x1
+#define RBR_BLKSIZE_16K			0x2
+#define RBR_BLKSIZE_32K			0x3
+#define RBR_BUFSZ2_2K			0x0
+#define RBR_BUFSZ2_4K			0x1
+#define RBR_BUFSZ2_8K			0x2
+#define RBR_BUFSZ2_16K			0x3
+#define RBR_BUFSZ1_1K			0x0
+#define RBR_BUFSZ1_2K			0x1
+#define RBR_BUFSZ1_4K			0x2
+#define RBR_BUFSZ1_8K			0x3
+#define RBR_BUFSZ0_256			0x0
+#define RBR_BUFSZ0_512			0x1
+#define RBR_BUFSZ0_1K			0x2
+#define RBR_BUFSZ0_2K			0x3
+
+#define RBR_KICK(IDX)			(DMC + 0x00020UL + (IDX) * 0x200UL)
+#define  RBR_KICK_BKADD			0x000000000000ffffULL
+
+#define RBR_STAT(IDX)			(DMC + 0x00028UL + (IDX) * 0x200UL)
+#define  RBR_STAT_QLEN			0x000000000000ffffULL
+
+#define RBR_HDH(IDX)			(DMC + 0x00030UL + (IDX) * 0x200UL)
+#define  RBR_HDH_HEAD_H			0x0000000000000fffULL
+
+#define RBR_HDL(IDX)			(DMC + 0x00038UL + (IDX) * 0x200UL)
+#define  RBR_HDL_HEAD_L			0x00000000fffffffcULL
+
+#define RCRCFIG_A(IDX)			(DMC + 0x00040UL + (IDX) * 0x200UL)
+#define  RCRCFIG_A_LEN			0xffff000000000000ULL
+#define  RCRCFIG_A_LEN_SHIFT		48
+#define  RCRCFIG_A_STADDR_BASE		0x00000ffffff80000ULL
+#define  RCRCFIG_A_STADDR		0x000000000007ffc0ULL
+
+#define RCRCFIG_B(IDX)			(DMC + 0x00048UL + (IDX) * 0x200UL)
+#define  RCRCFIG_B_PTHRES		0x00000000ffff0000ULL
+#define  RCRCFIG_B_PTHRES_SHIFT		16
+#define  RCRCFIG_B_ENTOUT		0x0000000000008000ULL
+#define  RCRCFIG_B_TIMEOUT		0x000000000000003fULL
+#define  RCRCFIG_B_TIMEOUT_SHIFT	0
+
+#define RCRSTAT_A(IDX)			(DMC + 0x00050UL + (IDX) * 0x200UL)
+#define  RCRSTAT_A_QLEN			0x000000000000ffffULL
+
+#define RCRSTAT_B(IDX)			(DMC + 0x00058UL + (IDX) * 0x200UL)
+#define  RCRSTAT_B_TIPTR_H		0x0000000000000fffULL
+
+#define RCRSTAT_C(IDX)			(DMC + 0x00060UL + (IDX) * 0x200UL)
+#define  RCRSTAT_C_TIPTR_L		0x00000000fffffff8ULL
+
+#define RX_DMA_CTL_STAT(IDX)		(DMC + 0x00070UL + (IDX) * 0x200UL)
+#define  RX_DMA_CTL_STAT_RBR_TMOUT	0x0020000000000000ULL
+#define  RX_DMA_CTL_STAT_RSP_CNT_ERR	0x0010000000000000ULL
+#define  RX_DMA_CTL_STAT_BYTE_EN_BUS	0x0008000000000000ULL
+#define  RX_DMA_CTL_STAT_RSP_DAT_ERR	0x0004000000000000ULL
+#define  RX_DMA_CTL_STAT_RCR_ACK_ERR	0x0002000000000000ULL
+#define  RX_DMA_CTL_STAT_DC_FIFO_ERR	0x0001000000000000ULL
+#define  RX_DMA_CTL_STAT_MEX		0x0000800000000000ULL
+#define  RX_DMA_CTL_STAT_RCRTHRES	0x0000400000000000ULL
+#define  RX_DMA_CTL_STAT_RCRTO		0x0000200000000000ULL
+#define  RX_DMA_CTL_STAT_RCR_SHA_PAR	0x0000100000000000ULL
+#define  RX_DMA_CTL_STAT_RBR_PRE_PAR	0x0000080000000000ULL
+#define  RX_DMA_CTL_STAT_PORT_DROP_PKT	0x0000040000000000ULL
+#define  RX_DMA_CTL_STAT_WRED_DROP	0x0000020000000000ULL
+#define  RX_DMA_CTL_STAT_RBR_PRE_EMTY	0x0000010000000000ULL
+#define  RX_DMA_CTL_STAT_RCRSHADOW_FULL	0x0000008000000000ULL
+#define  RX_DMA_CTL_STAT_CONFIG_ERR	0x0000004000000000ULL
+#define  RX_DMA_CTL_STAT_RCRINCON	0x0000002000000000ULL
+#define  RX_DMA_CTL_STAT_RCRFULL	0x0000001000000000ULL
+#define  RX_DMA_CTL_STAT_RBR_EMPTY	0x0000000800000000ULL
+#define  RX_DMA_CTL_STAT_RBRFULL	0x0000000400000000ULL
+#define  RX_DMA_CTL_STAT_RBRLOGPAGE	0x0000000200000000ULL
+#define  RX_DMA_CTL_STAT_CFIGLOGPAGE	0x0000000100000000ULL
+#define  RX_DMA_CTL_STAT_PTRREAD	0x00000000ffff0000ULL
+#define  RX_DMA_CTL_STAT_PTRREAD_SHIFT	16
+#define  RX_DMA_CTL_STAT_PKTREAD	0x000000000000ffffULL
+#define  RX_DMA_CTL_STAT_PKTREAD_SHIFT	0
+
+#define  RX_DMA_CTL_STAT_CHAN_FATAL	(RX_DMA_CTL_STAT_RBR_TMOUT | \
+					 RX_DMA_CTL_STAT_RSP_CNT_ERR | \
+					 RX_DMA_CTL_STAT_BYTE_EN_BUS | \
+					 RX_DMA_CTL_STAT_RSP_DAT_ERR | \
+					 RX_DMA_CTL_STAT_RCR_ACK_ERR | \
+					 RX_DMA_CTL_STAT_RCR_SHA_PAR | \
+					 RX_DMA_CTL_STAT_RBR_PRE_PAR | \
+					 RX_DMA_CTL_STAT_CONFIG_ERR | \
+					 RX_DMA_CTL_STAT_RCRINCON | \
+					 RX_DMA_CTL_STAT_RCRFULL | \
+					 RX_DMA_CTL_STAT_RBRFULL | \
+					 RX_DMA_CTL_STAT_RBRLOGPAGE | \
+					 RX_DMA_CTL_STAT_CFIGLOGPAGE)
+
+#define RX_DMA_CTL_STAT_PORT_FATAL	(RX_DMA_CTL_STAT_DC_FIFO_ERR)
+
+#define RX_DMA_CTL_WRITE_CLEAR_ERRS	(RX_DMA_CTL_STAT_RBR_EMPTY | \
+					 RX_DMA_CTL_STAT_RCRSHADOW_FULL | \
+					 RX_DMA_CTL_STAT_RBR_PRE_EMTY | \
+					 RX_DMA_CTL_STAT_WRED_DROP | \
+					 RX_DMA_CTL_STAT_PORT_DROP_PKT | \
+					 RX_DMA_CTL_STAT_RCRTO | \
+					 RX_DMA_CTL_STAT_RCRTHRES | \
+					 RX_DMA_CTL_STAT_DC_FIFO_ERR)
+
+#define RCR_FLSH(IDX)			(DMC + 0x00078UL + (IDX) * 0x200UL)
+#define  RCR_FLSH_FLSH			0x0000000000000001ULL
+
+#define RXMISC(IDX)			(DMC + 0x00090UL + (IDX) * 0x200UL)
+#define  RXMISC_OFLOW			0x0000000000010000ULL
+#define  RXMISC_COUNT			0x000000000000ffffULL
+
+#define RX_DMA_CTL_STAT_DBG(IDX)	(DMC + 0x00098UL + (IDX) * 0x200UL)
+#define  RX_DMA_CTL_STAT_DBG_RBR_TMOUT		0x0020000000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RSP_CNT_ERR	0x0010000000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_BYTE_EN_BUS	0x0008000000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RSP_DAT_ERR	0x0004000000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RCR_ACK_ERR	0x0002000000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_DC_FIFO_ERR	0x0001000000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_MEX		0x0000800000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RCRTHRES		0x0000400000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RCRTO		0x0000200000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RCR_SHA_PAR	0x0000100000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RBR_PRE_PAR	0x0000080000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_PORT_DROP_PKT	0x0000040000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_WRED_DROP		0x0000020000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RBR_PRE_EMTY	0x0000010000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RCRSHADOW_FULL	0x0000008000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_CONFIG_ERR		0x0000004000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RCRINCON		0x0000002000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RCRFULL		0x0000001000000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RBR_EMPTY		0x0000000800000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RBRFULL		0x0000000400000000ULL
+#define  RX_DMA_CTL_STAT_DBG_RBRLOGPAGE		0x0000000200000000ULL
+#define  RX_DMA_CTL_STAT_DBG_CFIGLOGPAGE	0x0000000100000000ULL
+#define  RX_DMA_CTL_STAT_DBG_PTRREAD		0x00000000ffff0000ULL
+#define  RX_DMA_CTL_STAT_DBG_PKTREAD		0x000000000000ffffULL
+
+#define RX_DMA_ENT_MSK(IDX)		(DMC + 0x00068UL + (IDX) * 0x200UL)
+#define  RX_DMA_ENT_MSK_RBR_TMOUT	0x0000000000200000ULL
+#define  RX_DMA_ENT_MSK_RSP_CNT_ERR	0x0000000000100000ULL
+#define  RX_DMA_ENT_MSK_BYTE_EN_BUS	0x0000000000080000ULL
+#define  RX_DMA_ENT_MSK_RSP_DAT_ERR	0x0000000000040000ULL
+#define  RX_DMA_ENT_MSK_RCR_ACK_ERR	0x0000000000020000ULL
+#define  RX_DMA_ENT_MSK_DC_FIFO_ERR	0x0000000000010000ULL
+#define  RX_DMA_ENT_MSK_RCRTHRES	0x0000000000004000ULL
+#define  RX_DMA_ENT_MSK_RCRTO		0x0000000000002000ULL
+#define  RX_DMA_ENT_MSK_RCR_SHA_PAR	0x0000000000001000ULL
+#define  RX_DMA_ENT_MSK_RBR_PRE_PAR	0x0000000000000800ULL
+#define  RX_DMA_ENT_MSK_PORT_DROP_PKT	0x0000000000000400ULL
+#define  RX_DMA_ENT_MSK_WRED_DROP	0x0000000000000200ULL
+#define  RX_DMA_ENT_MSK_RBR_PRE_EMTY	0x0000000000000100ULL
+#define  RX_DMA_ENT_MSK_RCR_SHADOW_FULL	0x0000000000000080ULL
+#define  RX_DMA_ENT_MSK_CONFIG_ERR	0x0000000000000040ULL
+#define  RX_DMA_ENT_MSK_RCRINCON	0x0000000000000020ULL
+#define  RX_DMA_ENT_MSK_RCRFULL		0x0000000000000010ULL
+#define  RX_DMA_ENT_MSK_RBR_EMPTY	0x0000000000000008ULL
+#define  RX_DMA_ENT_MSK_RBRFULL		0x0000000000000004ULL
+#define  RX_DMA_ENT_MSK_RBRLOGPAGE	0x0000000000000002ULL
+#define  RX_DMA_ENT_MSK_CFIGLOGPAGE	0x0000000000000001ULL
+#define  RX_DMA_ENT_MSK_ALL		0x00000000003f7fffULL
+
+#define TX_RNG_CFIG(IDX)		(DMC + 0x40000UL + (IDX) * 0x200UL)
+#define  TX_RNG_CFIG_LEN		0x1fff000000000000ULL
+#define  TX_RNG_CFIG_LEN_SHIFT		48
+#define  TX_RNG_CFIG_STADDR_BASE	0x00000ffffff80000ULL
+#define  TX_RNG_CFIG_STADDR		0x000000000007ffc0ULL
+
+#define TX_RING_HDL(IDX)		(DMC + 0x40010UL + (IDX) * 0x200UL)
+#define  TX_RING_HDL_WRAP		0x0000000000080000ULL
+#define  TX_RING_HDL_HEAD		0x000000000007fff8ULL
+#define  TX_RING_HDL_HEAD_SHIFT		3
+
+#define TX_RING_KICK(IDX)		(DMC + 0x40018UL + (IDX) * 0x200UL)
+#define  TX_RING_KICK_WRAP		0x0000000000080000ULL
+#define  TX_RING_KICK_TAIL		0x000000000007fff8ULL
+
+#define TX_ENT_MSK(IDX)			(DMC + 0x40020UL + (IDX) * 0x200UL)
+#define  TX_ENT_MSK_MK			0x0000000000008000ULL
+#define  TX_ENT_MSK_MBOX_ERR		0x0000000000000080ULL
+#define  TX_ENT_MSK_PKT_SIZE_ERR	0x0000000000000040ULL
+#define  TX_ENT_MSK_TX_RING_OFLOW	0x0000000000000020ULL
+#define  TX_ENT_MSK_PREF_BUF_ECC_ERR	0x0000000000000010ULL
+#define  TX_ENT_MSK_NACK_PREF		0x0000000000000008ULL
+#define  TX_ENT_MSK_NACK_PKT_RD		0x0000000000000004ULL
+#define  TX_ENT_MSK_CONF_PART_ERR	0x0000000000000002ULL
+#define  TX_ENT_MSK_PKT_PRT_ERR		0x0000000000000001ULL
+
+#define TX_CS(IDX)			(DMC + 0x40028UL + (IDX)*0x200UL)
+#define  TX_CS_PKT_CNT			0x0fff000000000000ULL
+#define  TX_CS_PKT_CNT_SHIFT		48
+#define  TX_CS_LASTMARK			0x00000fff00000000ULL
+#define  TX_CS_LASTMARK_SHIFT		32
+#define  TX_CS_RST			0x0000000080000000ULL
+#define  TX_CS_RST_STATE		0x0000000040000000ULL
+#define  TX_CS_MB			0x0000000020000000ULL
+#define  TX_CS_STOP_N_GO		0x0000000010000000ULL
+#define  TX_CS_SNG_STATE		0x0000000008000000ULL
+#define  TX_CS_MK			0x0000000000008000ULL
+#define  TX_CS_MMK			0x0000000000004000ULL
+#define  TX_CS_MBOX_ERR			0x0000000000000080ULL
+#define  TX_CS_PKT_SIZE_ERR		0x0000000000000040ULL
+#define  TX_CS_TX_RING_OFLOW		0x0000000000000020ULL
+#define  TX_CS_PREF_BUF_PAR_ERR		0x0000000000000010ULL
+#define  TX_CS_NACK_PREF		0x0000000000000008ULL
+#define  TX_CS_NACK_PKT_RD		0x0000000000000004ULL
+#define  TX_CS_CONF_PART_ERR		0x0000000000000002ULL
+#define  TX_CS_PKT_PRT_ERR		0x0000000000000001ULL
+
+#define TXDMA_MBH(IDX)			(DMC + 0x40030UL + (IDX) * 0x200UL)
+#define  TXDMA_MBH_MBADDR		0x0000000000000fffULL
+
+#define TXDMA_MBL(IDX)			(DMC + 0x40038UL + (IDX) * 0x200UL)
+#define  TXDMA_MBL_MBADDR		0x00000000ffffffc0ULL
+
+#define TX_DMA_PRE_ST(IDX)		(DMC + 0x40040UL + (IDX) * 0x200UL)
+#define  TX_DMA_PRE_ST_SHADOW_HD	0x000000000007ffffULL
+
+#define TX_RNG_ERR_LOGH(IDX)		(DMC + 0x40048UL + (IDX) * 0x200UL)
+#define  TX_RNG_ERR_LOGH_ERR		0x0000000080000000ULL
+#define  TX_RNG_ERR_LOGH_MERR		0x0000000040000000ULL
+#define  TX_RNG_ERR_LOGH_ERRCODE	0x0000000038000000ULL
+#define  TX_RNG_ERR_LOGH_ERRADDR	0x0000000000000fffULL
+
+#define TX_RNG_ERR_LOGL(IDX)		(DMC + 0x40050UL + (IDX) * 0x200UL)
+#define  TX_RNG_ERR_LOGL_ERRADDR	0x00000000ffffffffULL
+
+#define TDMC_INTR_DBG(IDX)		(DMC + 0x40060UL + (IDX) * 0x200UL)
+#define  TDMC_INTR_DBG_MK		0x0000000000008000ULL
+#define  TDMC_INTR_DBG_MBOX_ERR		0x0000000000000080ULL
+#define  TDMC_INTR_DBG_PKT_SIZE_ERR	0x0000000000000040ULL
+#define  TDMC_INTR_DBG_TX_RING_OFLOW	0x0000000000000020ULL
+#define  TDMC_INTR_DBG_PREF_BUF_PAR_ERR	0x0000000000000010ULL
+#define  TDMC_INTR_DBG_NACK_PREF	0x0000000000000008ULL
+#define  TDMC_INTR_DBG_NACK_PKT_RD	0x0000000000000004ULL
+#define  TDMC_INTR_DBG_CONF_PART_ERR	0x0000000000000002ULL
+#define  TDMC_INTR_DBG_PKT_PART_ERR	0x0000000000000001ULL
+
+#define TX_CS_DBG(IDX)			(DMC + 0x40068UL + (IDX) * 0x200UL)
+#define  TX_CS_DBG_PKT_CNT		0x0fff000000000000ULL
+
+#define TDMC_INJ_PAR_ERR(IDX)		(DMC + 0x45040UL + (IDX) * 0x200UL)
+#define  TDMC_INJ_PAR_ERR_VAL		0x000000000000ffffULL
+
+#define TDMC_DBG_SEL(IDX)		(DMC + 0x45080UL + (IDX) * 0x200UL)
+#define  TDMC_DBG_SEL_DBG_SEL		0x000000000000003fULL
+
+#define TDMC_TRAINING_VECTOR(IDX)	(DMC + 0x45088UL + (IDX) * 0x200UL)
+#define  TDMC_TRAINING_VECTOR_VEC	0x00000000ffffffffULL
+
+#define TXC_DMA_MAX(CHAN)		(FZC_TXC + 0x00000UL + (CHAN)*0x1000UL)
+#define TXC_DMA_MAX_LEN(CHAN)		(FZC_TXC + 0x00008UL + (CHAN)*0x1000UL)
+
+#define TXC_CONTROL			(FZC_TXC + 0x20000UL)
+#define  TXC_CONTROL_ENABLE		0x0000000000000010ULL
+#define  TXC_CONTROL_PORT_ENABLE(X)	(1 << (X))
+
+#define TXC_TRAINING_VEC		(FZC_TXC + 0x20008UL)
+#define  TXC_TRAINING_VEC_MASK		0x00000000ffffffffULL
+
+#define TXC_DEBUG			(FZC_TXC + 0x20010UL)
+#define  TXC_DEBUG_SELECT		0x000000000000003fULL
+
+#define TXC_MAX_REORDER			(FZC_TXC + 0x20018UL)
+#define  TXC_MAX_REORDER_PORT3		0x000000000f000000ULL
+#define  TXC_MAX_REORDER_PORT2		0x00000000000f0000ULL
+#define  TXC_MAX_REORDER_PORT1		0x0000000000000f00ULL
+#define  TXC_MAX_REORDER_PORT0		0x000000000000000fULL
+
+#define TXC_PORT_CTL(PORT)		(FZC_TXC + 0x20020UL + (PORT)*0x100UL)
+#define  TXC_PORT_CTL_CLR_ALL_STAT	0x0000000000000001ULL
+
+#define TXC_PKT_STUFFED(PORT)		(FZC_TXC + 0x20030UL + (PORT)*0x100UL)
+#define  TXC_PKT_STUFFED_PP_REORDER	0x00000000ffff0000ULL
+#define  TXC_PKT_STUFFED_PP_PACKETASSY	0x000000000000ffffULL
+
+#define TXC_PKT_XMIT(PORT)		(FZC_TXC + 0x20038UL + (PORT)*0x100UL)
+#define  TXC_PKT_XMIT_BYTES		0x00000000ffff0000ULL
+#define  TXC_PKT_XMIT_PKTS		0x000000000000ffffULL
+
+#define TXC_ROECC_CTL(PORT)		(FZC_TXC + 0x20040UL + (PORT)*0x100UL)
+#define  TXC_ROECC_CTL_DISABLE_UE	0x0000000080000000ULL
+#define  TXC_ROECC_CTL_DBL_BIT_ERR	0x0000000000020000ULL
+#define  TXC_ROECC_CTL_SNGL_BIT_ERR	0x0000000000010000ULL
+#define  TXC_ROECC_CTL_ALL_PKTS		0x0000000000000400ULL
+#define  TXC_ROECC_CTL_ALT_PKTS		0x0000000000000200ULL
+#define  TXC_ROECC_CTL_ONE_PKT_ONLY	0x0000000000000100ULL
+#define  TXC_ROECC_CTL_LST_PKT_LINE	0x0000000000000004ULL
+#define  TXC_ROECC_CTL_2ND_PKT_LINE	0x0000000000000002ULL
+#define  TXC_ROECC_CTL_1ST_PKT_LINE	0x0000000000000001ULL
+
+#define TXC_ROECC_ST(PORT)		(FZC_TXC + 0x20048UL + (PORT)*0x100UL)
+#define  TXC_ROECC_CLR_ST		0x0000000080000000ULL
+#define  TXC_ROECC_CE			0x0000000000020000ULL
+#define  TXC_ROECC_UE			0x0000000000010000ULL
+#define  TXC_ROECC_ST_ECC_ADDR		0x00000000000003ffULL
+
+#define TXC_RO_DATA0(PORT)		(FZC_TXC + 0x20050UL + (PORT)*0x100UL)
+#define  TXC_RO_DATA0_DATA0		0x00000000ffffffffULL /* bits 31:0 */
+
+#define TXC_RO_DATA1(PORT)		(FZC_TXC + 0x20058UL + (PORT)*0x100UL)
+#define  TXC_RO_DATA1_DATA1		0x00000000ffffffffULL /* bits 63:32 */
+
+#define TXC_RO_DATA2(PORT)		(FZC_TXC + 0x20060UL + (PORT)*0x100UL)
+#define  TXC_RO_DATA2_DATA2		0x00000000ffffffffULL /* bits 95:64 */
+
+#define TXC_RO_DATA3(PORT)		(FZC_TXC + 0x20068UL + (PORT)*0x100UL)
+#define  TXC_RO_DATA3_DATA3		0x00000000ffffffffULL /* bits 127:96 */
+
+#define TXC_RO_DATA4(PORT)		(FZC_TXC + 0x20070UL + (PORT)*0x100UL)
+#define  TXC_RO_DATA4_DATA4		0x0000000000ffffffULL /* bits 151:128 */
+
+#define TXC_SFECC_CTL(PORT)		(FZC_TXC + 0x20078UL + (PORT)*0x100UL)
+#define  TXC_SFECC_CTL_DISABLE_UE	0x0000000080000000ULL
+#define  TXC_SFECC_CTL_DBL_BIT_ERR	0x0000000000020000ULL
+#define  TXC_SFECC_CTL_SNGL_BIT_ERR	0x0000000000010000ULL
+#define  TXC_SFECC_CTL_ALL_PKTS		0x0000000000000400ULL
+#define  TXC_SFECC_CTL_ALT_PKTS		0x0000000000000200ULL
+#define  TXC_SFECC_CTL_ONE_PKT_ONLY	0x0000000000000100ULL
+#define  TXC_SFECC_CTL_LST_PKT_LINE	0x0000000000000004ULL
+#define  TXC_SFECC_CTL_2ND_PKT_LINE	0x0000000000000002ULL
+#define  TXC_SFECC_CTL_1ST_PKT_LINE	0x0000000000000001ULL
+
+#define TXC_SFECC_ST(PORT)		(FZC_TXC + 0x20080UL + (PORT)*0x100UL)
+#define  TXC_SFECC_ST_CLR_ST		0x0000000080000000ULL
+#define  TXC_SFECC_ST_CE		0x0000000000020000ULL
+#define  TXC_SFECC_ST_UE		0x0000000000010000ULL
+#define  TXC_SFECC_ST_ECC_ADDR		0x00000000000003ffULL
+
+#define TXC_SF_DATA0(PORT)		(FZC_TXC + 0x20088UL + (PORT)*0x100UL)
+#define  TXC_SF_DATA0_DATA0		0x00000000ffffffffULL /* bits 31:0 */
+
+#define TXC_SF_DATA1(PORT)		(FZC_TXC + 0x20090UL + (PORT)*0x100UL)
+#define  TXC_SF_DATA1_DATA1		0x00000000ffffffffULL /* bits 63:32 */
+
+#define TXC_SF_DATA2(PORT)		(FZC_TXC + 0x20098UL + (PORT)*0x100UL)
+#define  TXC_SF_DATA2_DATA2		0x00000000ffffffffULL /* bits 95:64 */
+
+#define TXC_SF_DATA3(PORT)		(FZC_TXC + 0x200a0UL + (PORT)*0x100UL)
+#define  TXC_SF_DATA3_DATA3		0x00000000ffffffffULL /* bits 127:96 */
+
+#define TXC_SF_DATA4(PORT)		(FZC_TXC + 0x200a8UL + (PORT)*0x100UL)
+#define  TXC_SF_DATA4_DATA4		0x0000000000ffffffULL /* bits 151:128 */
+
+#define TXC_RO_TIDS(PORT)		(FZC_TXC + 0x200b0UL + (PORT)*0x100UL)
+#define  TXC_RO_TIDS_IN_USE		0x00000000ffffffffULL
+
+#define TXC_RO_STATE0(PORT)		(FZC_TXC + 0x200b8UL + (PORT)*0x100UL)
+#define  TXC_RO_STATE0_DUPLICATE_TID	0x00000000ffffffffULL
+
+#define TXC_RO_STATE1(PORT)		(FZC_TXC + 0x200c0UL + (PORT)*0x100UL)
+#define  TXC_RO_STATE1_UNUSED_TID	0x00000000ffffffffULL
+
+#define TXC_RO_STATE2(PORT)		(FZC_TXC + 0x200c8UL + (PORT)*0x100UL)
+#define  TXC_RO_STATE2_TRANS_TIMEOUT	0x00000000ffffffffULL
+
+#define TXC_RO_STATE3(PORT)		(FZC_TXC + 0x200d0UL + (PORT)*0x100UL)
+#define  TXC_RO_STATE3_ENAB_SPC_WMARK	0x0000000080000000ULL
+#define  TXC_RO_STATE3_RO_SPC_WMARK	0x000000007fe00000ULL
+#define  TXC_RO_STATE3_ROFIFO_SPC_AVAIL	0x00000000001ff800ULL
+#define  TXC_RO_STATE3_ENAB_RO_WMARK	0x0000000000000100ULL
+#define  TXC_RO_STATE3_HIGH_RO_USED	0x00000000000000f0ULL
+#define  TXC_RO_STATE3_NUM_RO_USED	0x000000000000000fULL
+
+#define TXC_RO_CTL(PORT)		(FZC_TXC + 0x200d8UL + (PORT)*0x100UL)
+#define  TXC_RO_CTL_CLR_FAIL_STATE	0x0000000080000000ULL
+#define  TXC_RO_CTL_RO_ADDR		0x000000000f000000ULL
+#define  TXC_RO_CTL_ADDR_FAILED		0x0000000000400000ULL
+#define  TXC_RO_CTL_DMA_FAILED		0x0000000000200000ULL
+#define  TXC_RO_CTL_LEN_FAILED		0x0000000000100000ULL
+#define  TXC_RO_CTL_CAPT_ADDR_FAILED	0x0000000000040000ULL
+#define  TXC_RO_CTL_CAPT_DMA_FAILED	0x0000000000020000ULL
+#define  TXC_RO_CTL_CAPT_LEN_FAILED	0x0000000000010000ULL
+#define  TXC_RO_CTL_RO_STATE_RD_DONE	0x0000000000000080ULL
+#define  TXC_RO_CTL_RO_STATE_WR_DONE	0x0000000000000040ULL
+#define  TXC_RO_CTL_RO_STATE_RD		0x0000000000000020ULL
+#define  TXC_RO_CTL_RO_STATE_WR		0x0000000000000010ULL
+#define  TXC_RO_CTL_RO_STATE_ADDR	0x000000000000000fULL
+
+#define TXC_RO_ST_DATA0(PORT)		(FZC_TXC + 0x200e0UL + (PORT)*0x100UL)
+#define  TXC_RO_ST_DATA0_DATA0		0x00000000ffffffffULL
+
+#define TXC_RO_ST_DATA1(PORT)		(FZC_TXC + 0x200e8UL + (PORT)*0x100UL)
+#define  TXC_RO_ST_DATA1_DATA1		0x00000000ffffffffULL
+
+#define TXC_RO_ST_DATA2(PORT)		(FZC_TXC + 0x200f0UL + (PORT)*0x100UL)
+#define  TXC_RO_ST_DATA2_DATA2		0x00000000ffffffffULL
+
+#define TXC_RO_ST_DATA3(PORT)		(FZC_TXC + 0x200f8UL + (PORT)*0x100UL)
+#define  TXC_RO_ST_DATA3_DATA3		0x00000000ffffffffULL
+
+#define TXC_PORT_PACKET_REQ(PORT)	(FZC_TXC + 0x20100UL + (PORT)*0x100UL)
+#define  TXC_PORT_PACKET_REQ_GATHER_REQ	0x00000000f0000000ULL
+#define  TXC_PORT_PACKET_REQ_PKT_REQ	0x000000000fff0000ULL
+#define  TXC_PORT_PACKET_REQ_PERR_ABRT	0x000000000000ffffULL
+
+	/* bits are same as TXC_INT_STAT */
+#define TXC_INT_STAT_DBG		(FZC_TXC + 0x20420UL)
+
+#define TXC_INT_STAT			(FZC_TXC + 0x20428UL)
+#define  TXC_INT_STAT_VAL_SHIFT(PORT)	((PORT) * 8)
+#define  TXC_INT_STAT_VAL(PORT)		(0x3f << TXC_INT_STAT_VAL_SHIFT(PORT))
+#define  TXC_INT_STAT_SF_CE(PORT)	(0x01 << TXC_INT_STAT_VAL_SHIFT(PORT))
+#define  TXC_INT_STAT_SF_UE(PORT)	(0x02 << TXC_INT_STAT_VAL_SHIFT(PORT))
+#define  TXC_INT_STAT_RO_CE(PORT)	(0x04 << TXC_INT_STAT_VAL_SHIFT(PORT))
+#define  TXC_INT_STAT_RO_UE(PORT)	(0x08 << TXC_INT_STAT_VAL_SHIFT(PORT))
+#define  TXC_INT_STAT_REORDER_ERR(PORT)	(0x10 << TXC_INT_STAT_VAL_SHIFT(PORT))
+#define  TXC_INT_STAT_PKTASM_DEAD(PORT)	(0x20 << TXC_INT_STAT_VAL_SHIFT(PORT))
+
+#define TXC_INT_MASK			(FZC_TXC + 0x20430UL)
+#define  TXC_INT_MASK_VAL_SHIFT(PORT)	((PORT) * 8)
+#define  TXC_INT_MASK_VAL(PORT)		(0x3f << TXC_INT_STAT_VAL_SHIFT(PORT))
+
+#define TXC_INT_MASK_SF_CE		0x01
+#define TXC_INT_MASK_SF_UE		0x02
+#define TXC_INT_MASK_RO_CE		0x04
+#define TXC_INT_MASK_RO_UE		0x08
+#define TXC_INT_MASK_REORDER_ERR	0x10
+#define TXC_INT_MASK_PKTASM_DEAD	0x20
+#define TXC_INT_MASK_ALL		0x3f
+
+#define TXC_PORT_DMA(IDX)		(FZC_TXC + 0x20028UL + (IDX)*0x100UL)
+
+#define ESPC_PIO_EN			(FZC_PROM + 0x40000UL)
+#define  ESPC_PIO_EN_ENABLE		0x0000000000000001ULL
+
+#define ESPC_PIO_STAT			(FZC_PROM + 0x40008UL)
+#define  ESPC_PIO_STAT_READ_START	0x0000000080000000ULL
+#define  ESPC_PIO_STAT_READ_END		0x0000000040000000ULL
+#define  ESPC_PIO_STAT_WRITE_INIT	0x0000000020000000ULL
+#define  ESPC_PIO_STAT_WRITE_END	0x0000000010000000ULL
+#define  ESPC_PIO_STAT_ADDR		0x0000000003ffff00ULL
+#define  ESPC_PIO_STAT_ADDR_SHIFT	8
+#define  ESPC_PIO_STAT_DATA		0x00000000000000ffULL
+#define  ESPC_PIO_STAT_DATA_SHIFT	0
+
+#define ESPC_NCR(IDX)			(FZC_PROM + 0x40020UL + (IDX)*0x8UL)
+#define  ESPC_NCR_VAL			0x00000000ffffffffULL
+
+#define ESPC_MAC_ADDR0			ESPC_NCR(0)
+#define ESPC_MAC_ADDR1			ESPC_NCR(1)
+#define ESPC_NUM_PORTS_MACS		ESPC_NCR(2)
+#define  ESPC_NUM_PORTS_MACS_VAL	0x00000000000000ffULL
+#define ESPC_MOD_STR_LEN		ESPC_NCR(4)
+#define ESPC_MOD_STR_1			ESPC_NCR(5)
+#define ESPC_MOD_STR_2			ESPC_NCR(6)
+#define ESPC_MOD_STR_3			ESPC_NCR(7)
+#define ESPC_MOD_STR_4			ESPC_NCR(8)
+#define ESPC_MOD_STR_5			ESPC_NCR(9)
+#define ESPC_MOD_STR_6			ESPC_NCR(10)
+#define ESPC_MOD_STR_7			ESPC_NCR(11)
+#define ESPC_MOD_STR_8			ESPC_NCR(12)
+#define ESPC_BD_MOD_STR_LEN		ESPC_NCR(13)
+#define ESPC_BD_MOD_STR_1		ESPC_NCR(14)
+#define ESPC_BD_MOD_STR_2		ESPC_NCR(15)
+#define ESPC_BD_MOD_STR_3		ESPC_NCR(16)
+#define ESPC_BD_MOD_STR_4		ESPC_NCR(17)
+
+#define ESPC_PHY_TYPE			ESPC_NCR(18)
+#define  ESPC_PHY_TYPE_PORT0		0x00000000ff000000ULL
+#define  ESPC_PHY_TYPE_PORT0_SHIFT	24
+#define  ESPC_PHY_TYPE_PORT1		0x0000000000ff0000ULL
+#define  ESPC_PHY_TYPE_PORT1_SHIFT	16
+#define  ESPC_PHY_TYPE_PORT2		0x000000000000ff00ULL
+#define  ESPC_PHY_TYPE_PORT2_SHIFT	8
+#define  ESPC_PHY_TYPE_PORT3		0x00000000000000ffULL
+#define  ESPC_PHY_TYPE_PORT3_SHIFT	0
+
+#define  ESPC_PHY_TYPE_1G_COPPER	3
+#define  ESPC_PHY_TYPE_1G_FIBER		2
+#define  ESPC_PHY_TYPE_10G_COPPER	1
+#define  ESPC_PHY_TYPE_10G_FIBER	0
+
+#define ESPC_MAX_FM_SZ			ESPC_NCR(19)
+
+#define ESPC_INTR_NUM			ESPC_NCR(20)
+#define  ESPC_INTR_NUM_PORT0		0x00000000ff000000ULL
+#define  ESPC_INTR_NUM_PORT1		0x0000000000ff0000ULL
+#define  ESPC_INTR_NUM_PORT2		0x000000000000ff00ULL
+#define  ESPC_INTR_NUM_PORT3		0x00000000000000ffULL
+
+#define ESPC_VER_IMGSZ			ESPC_NCR(21)
+#define  ESPC_VER_IMGSZ_IMGSZ		0x00000000ffff0000ULL
+#define  ESPC_VER_IMGSZ_IMGSZ_SHIFT	16
+#define  ESPC_VER_IMGSZ_VER		0x000000000000ffffULL
+#define  ESPC_VER_IMGSZ_VER_SHIFT	0
+
+#define ESPC_CHKSUM			ESPC_NCR(22)
+#define  ESPC_CHKSUM_SUM		0x00000000000000ffULL
+
+#define ESPC_EEPROM_SIZE		0x100000
+
+#define CLASS_CODE_UNRECOG		0x00
+#define CLASS_CODE_DUMMY1		0x01
+#define CLASS_CODE_ETHERTYPE1		0x02
+#define CLASS_CODE_ETHERTYPE2		0x03
+#define CLASS_CODE_USER_PROG1		0x04
+#define CLASS_CODE_USER_PROG2		0x05
+#define CLASS_CODE_USER_PROG3		0x06
+#define CLASS_CODE_USER_PROG4		0x07
+#define CLASS_CODE_TCP_IPV4		0x08
+#define CLASS_CODE_UDP_IPV4		0x09
+#define CLASS_CODE_AH_ESP_IPV4		0x0a
+#define CLASS_CODE_SCTP_IPV4		0x0b
+#define CLASS_CODE_TCP_IPV6		0x0c
+#define CLASS_CODE_UDP_IPV6		0x0d
+#define CLASS_CODE_AH_ESP_IPV6		0x0e
+#define CLASS_CODE_SCTP_IPV6		0x0f
+#define CLASS_CODE_ARP			0x10
+#define CLASS_CODE_RARP			0x11
+#define CLASS_CODE_DUMMY2		0x12
+#define CLASS_CODE_DUMMY3		0x13
+#define CLASS_CODE_DUMMY4		0x14
+#define CLASS_CODE_DUMMY5		0x15
+#define CLASS_CODE_DUMMY6		0x16
+#define CLASS_CODE_DUMMY7		0x17
+#define CLASS_CODE_DUMMY8		0x18
+#define CLASS_CODE_DUMMY9		0x19
+#define CLASS_CODE_DUMMY10		0x1a
+#define CLASS_CODE_DUMMY11		0x1b
+#define CLASS_CODE_DUMMY12		0x1c
+#define CLASS_CODE_DUMMY13		0x1d
+#define CLASS_CODE_DUMMY14		0x1e
+#define CLASS_CODE_DUMMY15		0x1f
+
+/* Logical devices and device groups */
+#define LDN_RXDMA(CHAN)			(0 + (CHAN))
+#define LDN_RESV1(OFF)			(16 + (OFF))
+#define LDN_TXDMA(CHAN)			(32 + (CHAN))
+#define LDN_RESV2(OFF)			(56 + (OFF))
+#define LDN_MIF				63
+#define LDN_MAC(PORT)			(64 + (PORT))
+#define LDN_DEVICE_ERROR		68
+#define LDN_MAX				LDN_DEVICE_ERROR
+
+#define NIU_LDG_MIN			0
+#define NIU_LDG_MAX			63
+#define NIU_NUM_LDG			64
+#define LDG_INVALID			0xff
+
+/* PHY stuff */
+#define NIU_PMA_PMD_DEV_ADDR		1
+#define NIU_PCS_DEV_ADDR		3
+
+#define NIU_PHY_ID_MASK			0xfffff0f0
+#define NIU_PHY_ID_BCM8704		0x00206030
+#define NIU_PHY_ID_BCM8706		0x00206035
+#define NIU_PHY_ID_BCM5464R		0x002060b0
+#define NIU_PHY_ID_MRVL88X2011		0x01410020
+
+/* MRVL88X2011 register addresses */
+#define MRVL88X2011_USER_DEV1_ADDR	1
+#define MRVL88X2011_USER_DEV2_ADDR	2
+#define MRVL88X2011_USER_DEV3_ADDR	3
+#define MRVL88X2011_USER_DEV4_ADDR	4
+#define MRVL88X2011_PMA_PMD_CTL_1	0x0000
+#define MRVL88X2011_PMA_PMD_STATUS_1	0x0001
+#define MRVL88X2011_10G_PMD_STATUS_2	0x0008
+#define MRVL88X2011_10G_PMD_TX_DIS	0x0009
+#define MRVL88X2011_10G_XGXS_LANE_STAT	0x0018
+#define MRVL88X2011_GENERAL_CTL		0x8300
+#define MRVL88X2011_LED_BLINK_CTL	0x8303
+#define MRVL88X2011_LED_8_TO_11_CTL	0x8306
+
+/* MRVL88X2011 register control */
+#define MRVL88X2011_ENA_XFPREFCLK	0x0001
+#define MRVL88X2011_ENA_PMDTX		0x0000
+#define MRVL88X2011_LOOPBACK            0x1
+#define MRVL88X2011_LED_ACT		0x1
+#define MRVL88X2011_LNK_STATUS_OK	0x4
+#define MRVL88X2011_LED_BLKRATE_MASK	0x70
+#define MRVL88X2011_LED_BLKRATE_034MS	0x0
+#define MRVL88X2011_LED_BLKRATE_067MS	0x1
+#define MRVL88X2011_LED_BLKRATE_134MS	0x2
+#define MRVL88X2011_LED_BLKRATE_269MS	0x3
+#define MRVL88X2011_LED_BLKRATE_538MS	0x4
+#define MRVL88X2011_LED_CTL_OFF		0x0
+#define MRVL88X2011_LED_CTL_PCS_ACT	0x5
+#define MRVL88X2011_LED_CTL_MASK	0x7
+#define MRVL88X2011_LED(n,v)		((v)<<((n)*4))
+#define MRVL88X2011_LED_STAT(n,v)	((v)>>((n)*4))
+
+#define BCM8704_PMA_PMD_DEV_ADDR	1
+#define BCM8704_PCS_DEV_ADDR		2
+#define BCM8704_USER_DEV3_ADDR		3
+#define BCM8704_PHYXS_DEV_ADDR		4
+#define BCM8704_USER_DEV4_ADDR		4
+
+#define BCM8704_PMD_RCV_SIGDET		0x000a
+#define  PMD_RCV_SIGDET_LANE3		0x0010
+#define  PMD_RCV_SIGDET_LANE2		0x0008
+#define  PMD_RCV_SIGDET_LANE1		0x0004
+#define  PMD_RCV_SIGDET_LANE0		0x0002
+#define  PMD_RCV_SIGDET_GLOBAL		0x0001
+
+#define BCM8704_PCS_10G_R_STATUS	0x0020
+#define  PCS_10G_R_STATUS_LINKSTAT	0x1000
+#define  PCS_10G_R_STATUS_PRBS31_ABLE	0x0004
+#define  PCS_10G_R_STATUS_HI_BER	0x0002
+#define  PCS_10G_R_STATUS_BLK_LOCK	0x0001
+
+#define BCM8704_USER_CONTROL		0xc800
+#define  USER_CONTROL_OPTXENB_LVL	0x8000
+#define  USER_CONTROL_OPTXRST_LVL	0x4000
+#define  USER_CONTROL_OPBIASFLT_LVL	0x2000
+#define  USER_CONTROL_OBTMPFLT_LVL	0x1000
+#define  USER_CONTROL_OPPRFLT_LVL	0x0800
+#define  USER_CONTROL_OPTXFLT_LVL	0x0400
+#define  USER_CONTROL_OPRXLOS_LVL	0x0200
+#define  USER_CONTROL_OPRXFLT_LVL	0x0100
+#define  USER_CONTROL_OPTXON_LVL	0x0080
+#define  USER_CONTROL_RES1		0x007f
+#define  USER_CONTROL_RES1_SHIFT	0
+
+#define BCM8704_USER_ANALOG_CLK		0xc801
+#define BCM8704_USER_PMD_RX_CONTROL	0xc802
+
+#define BCM8704_USER_PMD_TX_CONTROL	0xc803
+#define  USER_PMD_TX_CTL_RES1		0xfe00
+#define  USER_PMD_TX_CTL_XFP_CLKEN	0x0100
+#define  USER_PMD_TX_CTL_TX_DAC_TXD	0x00c0
+#define  USER_PMD_TX_CTL_TX_DAC_TXD_SH	6
+#define  USER_PMD_TX_CTL_TX_DAC_TXCK	0x0030
+#define  USER_PMD_TX_CTL_TX_DAC_TXCK_SH	4
+#define  USER_PMD_TX_CTL_TSD_LPWREN	0x0008
+#define  USER_PMD_TX_CTL_TSCK_LPWREN	0x0004
+#define  USER_PMD_TX_CTL_CMU_LPWREN	0x0002
+#define  USER_PMD_TX_CTL_SFIFORST	0x0001
+
+#define BCM8704_USER_ANALOG_STATUS0	0xc804
+#define BCM8704_USER_OPT_DIGITAL_CTRL	0xc808
+#define BCM8704_USER_TX_ALARM_STATUS	0x9004
+
+#define  USER_ODIG_CTRL_FMODE		0x8000
+#define  USER_ODIG_CTRL_TX_PDOWN	0x4000
+#define  USER_ODIG_CTRL_RX_PDOWN	0x2000
+#define  USER_ODIG_CTRL_EFILT_EN	0x1000
+#define  USER_ODIG_CTRL_OPT_RST		0x0800
+#define  USER_ODIG_CTRL_PCS_TIB		0x0400
+#define  USER_ODIG_CTRL_PCS_RI		0x0200
+#define  USER_ODIG_CTRL_RESV1		0x0180
+#define  USER_ODIG_CTRL_GPIOS		0x0060
+#define  USER_ODIG_CTRL_GPIOS_SHIFT	5
+#define  USER_ODIG_CTRL_RESV2		0x0010
+#define  USER_ODIG_CTRL_LB_ERR_DIS	0x0008
+#define  USER_ODIG_CTRL_RESV3		0x0006
+#define  USER_ODIG_CTRL_TXONOFF_PD_DIS	0x0001
+
+#define BCM8704_PHYXS_XGXS_LANE_STAT	0x0018
+#define  PHYXS_XGXS_LANE_STAT_ALINGED	0x1000
+#define  PHYXS_XGXS_LANE_STAT_PATTEST	0x0800
+#define  PHYXS_XGXS_LANE_STAT_MAGIC	0x0400
+#define  PHYXS_XGXS_LANE_STAT_LANE3	0x0008
+#define  PHYXS_XGXS_LANE_STAT_LANE2	0x0004
+#define  PHYXS_XGXS_LANE_STAT_LANE1	0x0002
+#define  PHYXS_XGXS_LANE_STAT_LANE0	0x0001
+
+#define BCM5464R_AUX_CTL		24
+#define  BCM5464R_AUX_CTL_EXT_LB	0x8000
+#define  BCM5464R_AUX_CTL_EXT_PLEN	0x4000
+#define  BCM5464R_AUX_CTL_ER1000	0x3000
+#define  BCM5464R_AUX_CTL_ER1000_SHIFT	12
+#define  BCM5464R_AUX_CTL_RESV1		0x0800
+#define  BCM5464R_AUX_CTL_WRITE_1	0x0400
+#define  BCM5464R_AUX_CTL_RESV2		0x0300
+#define  BCM5464R_AUX_CTL_PRESP_DIS	0x0080
+#define  BCM5464R_AUX_CTL_RESV3		0x0040
+#define  BCM5464R_AUX_CTL_ER100		0x0030
+#define  BCM5464R_AUX_CTL_ER100_SHIFT	4
+#define  BCM5464R_AUX_CTL_DIAG_MODE	0x0008
+#define  BCM5464R_AUX_CTL_SR_SEL	0x0007
+#define  BCM5464R_AUX_CTL_SR_SEL_SHIFT	0
+
+#define  BCM5464R_CTRL1000_AS_MASTER		0x0800
+#define  BCM5464R_CTRL1000_ENABLE_AS_MASTER	0x1000
+
+#define RCR_ENTRY_MULTI			0x8000000000000000ULL
+#define RCR_ENTRY_PKT_TYPE		0x6000000000000000ULL
+#define RCR_ENTRY_PKT_TYPE_SHIFT	61
+#define RCR_ENTRY_ZERO_COPY		0x1000000000000000ULL
+#define RCR_ENTRY_NOPORT		0x0800000000000000ULL
+#define RCR_ENTRY_PROMISC		0x0400000000000000ULL
+#define RCR_ENTRY_ERROR			0x0380000000000000ULL
+#define RCR_ENTRY_DCF_ERR		0x0040000000000000ULL
+#define RCR_ENTRY_L2_LEN		0x003fff0000000000ULL
+#define RCR_ENTRY_L2_LEN_SHIFT		40
+#define RCR_ENTRY_PKTBUFSZ		0x000000c000000000ULL
+#define RCR_ENTRY_PKTBUFSZ_SHIFT	38
+#define RCR_ENTRY_PKT_BUF_ADDR		0x0000003fffffffffULL /* bits 43:6 */
+#define RCR_ENTRY_PKT_BUF_ADDR_SHIFT	6
+
+#define RCR_PKT_TYPE_OTHER		0x0
+#define RCR_PKT_TYPE_TCP		0x1
+#define RCR_PKT_TYPE_UDP		0x2
+#define RCR_PKT_TYPE_SCTP		0x3
+
+#define NIU_RXPULL_MAX			ETH_HLEN
+
+struct rx_pkt_hdr0 {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	u8	inputport:2,
+		maccheck:1,
+		class:5;
+	u8	vlan:1,
+		llcsnap:1,
+		noport:1,
+		badip:1,
+		tcamhit:1,
+		tres:2,
+		tzfvld:1;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+	u8	class:5,
+		maccheck:1,
+		inputport:2;
+	u8	tzfvld:1,
+		tres:2,
+		tcamhit:1,
+		badip:1,
+		noport:1,
+		llcsnap:1,
+		vlan:1;
+#endif
+};
+
+struct rx_pkt_hdr1 {
+	u8	hwrsvd1;
+	u8	tcammatch;
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	u8	hwrsvd2:2,
+		hashit:1,
+		exact:1,
+		hzfvld:1,
+		hashsidx:3;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+	u8	hashsidx:3,
+		hzfvld:1,
+		exact:1,
+		hashit:1,
+		hwrsvd2:2;
+#endif
+	u8	zcrsvd;
+
+	/* Bits 11:8 of zero copy flow ID.  */
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	u8	hwrsvd3:4, zflowid0:4;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+	u8	zflowid0:4, hwrsvd3:4;
+#endif
+
+	/* Bits 7:0 of zero copy flow ID.  */
+	u8	zflowid1;
+
+	/* Bits 15:8 of hash value, H2.  */
+	u8	hashval2_0;
+
+	/* Bits 7:0 of hash value, H2.  */
+	u8	hashval2_1;
+
+	/* Bits 19:16 of hash value, H1.  */
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	u8	hwrsvd4:4, hashval1_0:4;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+	u8	hashval1_0:4, hwrsvd4:4;
+#endif
+
+	/* Bits 15:8 of hash value, H1.  */
+	u8	hashval1_1;
+
+	/* Bits 7:0 of hash value, H1.  */
+	u8	hashval1_2;
+
+	u8	hwrsvd5;
+	u8	hwrsvd6;
+
+	u8	usrdata_0;	/* Bits 39:32 of user data.  */
+	u8	usrdata_1;	/* Bits 31:24 of user data.  */
+	u8	usrdata_2;	/* Bits 23:16 of user data.  */
+	u8	usrdata_3;	/* Bits 15:8 of user data.  */
+	u8	usrdata_4;	/* Bits 7:0 of user data.  */
+};
+
+struct tx_dma_mbox {
+	u64	tx_dma_pre_st;
+	u64	tx_cs;
+	u64	tx_ring_kick;
+	u64	tx_ring_hdl;
+	u64	resv1;
+	u32	tx_rng_err_logl;
+	u32	tx_rng_err_logh;
+	u64	resv2;
+	u64	resv3;
+};
+
+struct tx_pkt_hdr {
+	__le64	flags;
+#define TXHDR_PAD		0x0000000000000007ULL
+#define  TXHDR_PAD_SHIFT	0
+#define TXHDR_LEN		0x000000003fff0000ULL
+#define  TXHDR_LEN_SHIFT	16
+#define TXHDR_L4STUFF		0x0000003f00000000ULL
+#define  TXHDR_L4STUFF_SHIFT	32
+#define TXHDR_L4START		0x00003f0000000000ULL
+#define  TXHDR_L4START_SHIFT	40
+#define TXHDR_L3START		0x000f000000000000ULL
+#define  TXHDR_L3START_SHIFT	48
+#define TXHDR_IHL		0x00f0000000000000ULL
+#define  TXHDR_IHL_SHIFT	52
+#define TXHDR_VLAN		0x0100000000000000ULL
+#define TXHDR_LLC		0x0200000000000000ULL
+#define TXHDR_IP_VER		0x2000000000000000ULL
+#define TXHDR_CSUM_NONE		0x0000000000000000ULL
+#define TXHDR_CSUM_TCP		0x4000000000000000ULL
+#define TXHDR_CSUM_UDP		0x8000000000000000ULL
+#define TXHDR_CSUM_SCTP		0xc000000000000000ULL
+	__le64	resv;
+};
+
+#define TX_DESC_SOP		0x8000000000000000ULL
+#define TX_DESC_MARK		0x4000000000000000ULL
+#define TX_DESC_NUM_PTR		0x3c00000000000000ULL
+#define TX_DESC_NUM_PTR_SHIFT	58
+#define TX_DESC_TR_LEN		0x01fff00000000000ULL
+#define TX_DESC_TR_LEN_SHIFT	44
+#define TX_DESC_SAD		0x00000fffffffffffULL
+#define TX_DESC_SAD_SHIFT	0
+
+struct tx_buff_info {
+	struct sk_buff *skb;
+	u64 mapping;
+};
+
+struct txdma_mailbox {
+	__le64	tx_dma_pre_st;
+	__le64	tx_cs;
+	__le64	tx_ring_kick;
+	__le64	tx_ring_hdl;
+	__le64	resv1;
+	__le32	tx_rng_err_logl;
+	__le32	tx_rng_err_logh;
+	__le64	resv2[2];
+} __attribute__((aligned(64)));
+
+#define MAX_TX_RING_SIZE	256
+#define MAX_TX_DESC_LEN		4076
+
+struct tx_ring_info {
+	struct tx_buff_info	tx_buffs[MAX_TX_RING_SIZE];
+	struct niu		*np;
+	u64			tx_cs;
+	int			pending;
+	int			prod;
+	int			cons;
+	int			wrap_bit;
+	u16			last_pkt_cnt;
+	u16			tx_channel;
+	u16			mark_counter;
+	u16			mark_freq;
+	u16			mark_pending;
+	u16			__pad;
+	struct txdma_mailbox	*mbox;
+	__le64			*descr;
+
+	u64			tx_packets;
+	u64			tx_bytes;
+	u64			tx_errors;
+
+	u64			mbox_dma;
+	u64			descr_dma;
+	int			max_burst;
+};
+
+#define NEXT_TX(tp, index) \
+	(((index) + 1) < (tp)->pending ? ((index) + 1) : 0)
+
+static inline u32 niu_tx_avail(struct tx_ring_info *tp)
+{
+	return (tp->pending -
+		((tp->prod - tp->cons) & (MAX_TX_RING_SIZE - 1)));
+}
+
+struct rxdma_mailbox {
+	__le64	rx_dma_ctl_stat;
+	__le64	rbr_stat;
+	__le32	rbr_hdl;
+	__le32	rbr_hdh;
+	__le64	resv1;
+	__le32	rcrstat_c;
+	__le32	rcrstat_b;
+	__le64	rcrstat_a;
+	__le64	resv2[2];
+} __attribute__((aligned(64)));
+
+#define MAX_RBR_RING_SIZE	128
+#define MAX_RCR_RING_SIZE	(MAX_RBR_RING_SIZE * 2)
+
+#define RBR_REFILL_MIN		16
+
+#define RX_SKB_ALLOC_SIZE	128 + NET_IP_ALIGN
+
+struct rx_ring_info {
+	struct niu		*np;
+	int			rx_channel;
+	u16			rbr_block_size;
+	u16			rbr_blocks_per_page;
+	u16			rbr_sizes[4];
+	unsigned int		rcr_index;
+	unsigned int		rcr_table_size;
+	unsigned int		rbr_index;
+	unsigned int		rbr_pending;
+	unsigned int		rbr_refill_pending;
+	unsigned int		rbr_kick_thresh;
+	unsigned int		rbr_table_size;
+	struct page		**rxhash;
+	struct rxdma_mailbox	*mbox;
+	__le64			*rcr;
+	__le32			*rbr;
+#define RBR_DESCR_ADDR_SHIFT	12
+
+	u64			rx_packets;
+	u64			rx_bytes;
+	u64			rx_dropped;
+	u64			rx_errors;
+
+	u64			mbox_dma;
+	u64			rcr_dma;
+	u64			rbr_dma;
+
+	/* WRED */
+	int			nonsyn_window;
+	int			nonsyn_threshold;
+	int			syn_window;
+	int			syn_threshold;
+
+	/* interrupt mitigation */
+	int			rcr_pkt_threshold;
+	int			rcr_timeout;
+};
+
+#define NEXT_RCR(rp, index) \
+	(((index) + 1) < (rp)->rcr_table_size ? ((index) + 1) : 0)
+#define NEXT_RBR(rp, index) \
+	(((index) + 1) < (rp)->rbr_table_size ? ((index) + 1) : 0)
+
+#define NIU_MAX_PORTS		4
+#define NIU_NUM_RXCHAN		16
+#define NIU_NUM_TXCHAN		24
+#define MAC_NUM_HASH		16
+
+#define NIU_MAX_MTU		9216
+
+/* VPD strings */
+#define	NIU_QGC_LP_BM_STR	"501-7606"
+#define	NIU_2XGF_LP_BM_STR	"501-7283"
+#define	NIU_QGC_PEM_BM_STR	"501-7765"
+#define	NIU_2XGF_PEM_BM_STR	"501-7626"
+#define	NIU_ALONSO_BM_STR	"373-0202"
+#define	NIU_FOXXY_BM_STR	"501-7961"
+#define	NIU_2XGF_MRVL_BM_STR	"SK-6E82"
+#define	NIU_QGC_LP_MDL_STR	"SUNW,pcie-qgc"
+#define	NIU_2XGF_LP_MDL_STR	"SUNW,pcie-2xgf"
+#define	NIU_QGC_PEM_MDL_STR	"SUNW,pcie-qgc-pem"
+#define	NIU_2XGF_PEM_MDL_STR	"SUNW,pcie-2xgf-pem"
+#define	NIU_ALONSO_MDL_STR	"SUNW,CP3220"
+#define	NIU_KIMI_MDL_STR	"SUNW,CP3260"
+#define	NIU_MARAMBA_MDL_STR	"SUNW,pcie-neptune"
+#define	NIU_FOXXY_MDL_STR	"SUNW,pcie-rfem"
+#define	NIU_2XGF_MRVL_MDL_STR	"SysKonnect,pcie-2xgf"
+
+#define NIU_VPD_MIN_MAJOR	3
+#define NIU_VPD_MIN_MINOR	4
+
+#define NIU_VPD_MODEL_MAX	32
+#define NIU_VPD_BD_MODEL_MAX	16
+#define NIU_VPD_VERSION_MAX	64
+#define NIU_VPD_PHY_TYPE_MAX	8
+
+struct niu_vpd {
+	char			model[NIU_VPD_MODEL_MAX];
+	char			board_model[NIU_VPD_BD_MODEL_MAX];
+	char			version[NIU_VPD_VERSION_MAX];
+	char			phy_type[NIU_VPD_PHY_TYPE_MAX];
+	u8			mac_num;
+	u8			__pad;
+	u8			local_mac[6];
+	int			fcode_major;
+	int			fcode_minor;
+};
+
+struct niu_altmac_rdc {
+	u8			alt_mac_num;
+	u8			rdc_num;
+	u8			mac_pref;
+};
+
+struct niu_vlan_rdc {
+	u8			rdc_num;
+	u8			vlan_pref;
+};
+
+struct niu_classifier {
+	struct niu_altmac_rdc	alt_mac_mappings[16];
+	struct niu_vlan_rdc	vlan_mappings[ENET_VLAN_TBL_NUM_ENTRIES];
+
+	u16			tcam_top;
+	u16			tcam_sz;
+	u16			tcam_valid_entries;
+	u16			num_alt_mac_mappings;
+
+	u32			h1_init;
+	u16			h2_init;
+};
+
+#define NIU_NUM_RDC_TABLES	8
+#define NIU_RDC_TABLE_SLOTS	16
+
+struct rdc_table {
+	u8			rxdma_channel[NIU_RDC_TABLE_SLOTS];
+};
+
+struct niu_rdc_tables {
+	struct rdc_table	tables[NIU_NUM_RDC_TABLES];
+	int			first_table_num;
+	int			num_tables;
+};
+
+#define PHY_TYPE_PMA_PMD	0
+#define PHY_TYPE_PCS		1
+#define PHY_TYPE_MII		2
+#define PHY_TYPE_MAX		3
+
+struct phy_probe_info {
+	u32	phy_id[PHY_TYPE_MAX][NIU_MAX_PORTS];
+	u8	phy_port[PHY_TYPE_MAX][NIU_MAX_PORTS];
+	u8	cur[PHY_TYPE_MAX];
+
+	struct device_attribute	phy_port_attrs[PHY_TYPE_MAX * NIU_MAX_PORTS];
+	struct device_attribute	phy_type_attrs[PHY_TYPE_MAX * NIU_MAX_PORTS];
+	struct device_attribute	phy_id_attrs[PHY_TYPE_MAX * NIU_MAX_PORTS];
+};
+
+struct niu_tcam_entry {
+	u8			valid;
+	u64			key[4];
+	u64			key_mask[4];
+	u64			assoc_data;
+};
+
+struct device_node;
+union niu_parent_id {
+	struct {
+		int		domain;
+		int		bus;
+		int		device;
+	} pci;
+	struct device_node	*of;
+};
+
+struct niu;
+struct niu_parent {
+	struct platform_device	*plat_dev;
+	int			index;
+
+	union niu_parent_id	id;
+
+	struct niu		*ports[NIU_MAX_PORTS];
+
+	atomic_t		refcnt;
+	struct list_head	list;
+
+	spinlock_t		lock;
+
+	u32			flags;
+#define PARENT_FLGS_CLS_HWINIT	0x00000001
+
+	u32			port_phy;
+#define PORT_PHY_UNKNOWN	0x00000000
+#define PORT_PHY_INVALID	0xffffffff
+#define PORT_TYPE_10G		0x01
+#define PORT_TYPE_1G		0x02
+#define PORT_TYPE_MASK		0x03
+
+	u8			rxchan_per_port[NIU_MAX_PORTS];
+	u8			txchan_per_port[NIU_MAX_PORTS];
+
+	struct niu_rdc_tables	rdc_group_cfg[NIU_MAX_PORTS];
+	u8			rdc_default[NIU_MAX_PORTS];
+
+	u8			ldg_map[LDN_MAX + 1];
+
+	u8			plat_type;
+#define PLAT_TYPE_INVALID	0x00
+#define PLAT_TYPE_ATLAS		0x01
+#define PLAT_TYPE_NIU		0x02
+#define PLAT_TYPE_VF_P0		0x03
+#define PLAT_TYPE_VF_P1		0x04
+#define PLAT_TYPE_ATCA_CP3220	0x08
+
+	u8			num_ports;
+
+	u16			tcam_num_entries;
+#define NIU_PCI_TCAM_ENTRIES	256
+#define NIU_NONPCI_TCAM_ENTRIES	128
+#define NIU_TCAM_ENTRIES_MAX	256
+
+	int			rxdma_clock_divider;
+
+	struct phy_probe_info	phy_probe_info;
+
+	struct niu_tcam_entry	tcam[NIU_TCAM_ENTRIES_MAX];
+
+#define	NIU_L2_PROG_CLS		2
+#define	NIU_L3_PROG_CLS		4
+	u64			l2_cls[NIU_L2_PROG_CLS];
+	u64			l3_cls[NIU_L3_PROG_CLS];
+	u64			tcam_key[12];
+	u64			flow_key[12];
+	u16			l3_cls_refcnt[NIU_L3_PROG_CLS];
+	u8			l3_cls_pid[NIU_L3_PROG_CLS];
+};
+
+struct niu_ops {
+	void *(*alloc_coherent)(struct device *dev, size_t size,
+				u64 *handle, gfp_t flag);
+	void (*free_coherent)(struct device *dev, size_t size,
+			      void *cpu_addr, u64 handle);
+	u64 (*map_page)(struct device *dev, struct page *page,
+			unsigned long offset, size_t size,
+			enum dma_data_direction direction);
+	void (*unmap_page)(struct device *dev, u64 dma_address,
+			   size_t size, enum dma_data_direction direction);
+	u64 (*map_single)(struct device *dev, void *cpu_addr,
+			  size_t size,
+			  enum dma_data_direction direction);
+	void (*unmap_single)(struct device *dev, u64 dma_address,
+			     size_t size, enum dma_data_direction direction);
+};
+
+struct niu_link_config {
+	u32				supported;
+
+	/* Describes what we're trying to get. */
+	u32				advertising;
+	u16				speed;
+	u8				duplex;
+	u8				autoneg;
+
+	/* Describes what we actually have. */
+	u32				active_advertising;
+	u16				active_speed;
+	u8				active_duplex;
+	u8				active_autoneg;
+#define SPEED_INVALID		0xffff
+#define DUPLEX_INVALID		0xff
+#define AUTONEG_INVALID		0xff
+
+	u8				loopback_mode;
+#define LOOPBACK_DISABLED	0x00
+#define LOOPBACK_PHY		0x01
+#define LOOPBACK_MAC		0x02
+};
+
+struct niu_ldg {
+	struct napi_struct	napi;
+	struct niu	*np;
+	u8		ldg_num;
+	u8		timer;
+	u64		v0, v1, v2;
+	unsigned int	irq;
+};
+
+struct niu_xmac_stats {
+	u64	tx_frames;
+	u64	tx_bytes;
+	u64	tx_fifo_errors;
+	u64	tx_overflow_errors;
+	u64	tx_max_pkt_size_errors;
+	u64	tx_underflow_errors;
+
+	u64	rx_local_faults;
+	u64	rx_remote_faults;
+	u64	rx_link_faults;
+	u64	rx_align_errors;
+	u64	rx_frags;
+	u64	rx_mcasts;
+	u64	rx_bcasts;
+	u64	rx_hist_cnt1;
+	u64	rx_hist_cnt2;
+	u64	rx_hist_cnt3;
+	u64	rx_hist_cnt4;
+	u64	rx_hist_cnt5;
+	u64	rx_hist_cnt6;
+	u64	rx_hist_cnt7;
+	u64	rx_octets;
+	u64	rx_code_violations;
+	u64	rx_len_errors;
+	u64	rx_crc_errors;
+	u64	rx_underflows;
+	u64	rx_overflows;
+
+	u64	pause_off_state;
+	u64	pause_on_state;
+	u64	pause_received;
+};
+
+struct niu_bmac_stats {
+	u64	tx_underflow_errors;
+	u64	tx_max_pkt_size_errors;
+	u64	tx_bytes;
+	u64	tx_frames;
+
+	u64	rx_overflows;
+	u64	rx_frames;
+	u64	rx_align_errors;
+	u64	rx_crc_errors;
+	u64	rx_len_errors;
+
+	u64	pause_off_state;
+	u64	pause_on_state;
+	u64	pause_received;
+};
+
+union niu_mac_stats {
+	struct niu_xmac_stats	xmac;
+	struct niu_bmac_stats	bmac;
+};
+
+struct niu_phy_ops {
+	int (*serdes_init)(struct niu *np);
+	int (*xcvr_init)(struct niu *np);
+	int (*link_status)(struct niu *np, int *);
+};
+
+struct platform_device;
+struct niu {
+	void __iomem			*regs;
+	struct net_device		*dev;
+	struct pci_dev			*pdev;
+	struct device			*device;
+	struct niu_parent		*parent;
+
+	u32				flags;
+#define NIU_FLAGS_HOTPLUG_PHY_PRESENT	0x02000000 /* Removeable PHY detected*/
+#define NIU_FLAGS_HOTPLUG_PHY		0x01000000 /* Removeable PHY */
+#define NIU_FLAGS_VPD_VALID		0x00800000 /* VPD has valid version */
+#define NIU_FLAGS_MSIX			0x00400000 /* MSI-X in use */
+#define NIU_FLAGS_MCAST			0x00200000 /* multicast filter enabled */
+#define NIU_FLAGS_PROMISC		0x00100000 /* PROMISC enabled */
+#define NIU_FLAGS_XCVR_SERDES		0x00080000 /* 0=PHY 1=SERDES */
+#define NIU_FLAGS_10G			0x00040000 /* 0=1G 1=10G */
+#define NIU_FLAGS_FIBER			0x00020000 /* 0=COPPER 1=FIBER */
+#define NIU_FLAGS_XMAC			0x00010000 /* 0=BMAC 1=XMAC */
+
+	u32				msg_enable;
+	char                            irq_name[NIU_NUM_RXCHAN+NIU_NUM_TXCHAN+3][IFNAMSIZ + 6];
+
+	/* Protects hw programming, and ring state.  */
+	spinlock_t			lock;
+
+	const struct niu_ops		*ops;
+	union niu_mac_stats		mac_stats;
+
+	struct rx_ring_info		*rx_rings;
+	struct tx_ring_info		*tx_rings;
+	int				num_rx_rings;
+	int				num_tx_rings;
+
+	struct niu_ldg			ldg[NIU_NUM_LDG];
+	int				num_ldg;
+
+	void __iomem			*mac_regs;
+	unsigned long			ipp_off;
+	unsigned long			pcs_off;
+	unsigned long			xpcs_off;
+
+	struct timer_list		timer;
+	u64				orig_led_state;
+	const struct niu_phy_ops	*phy_ops;
+	int				phy_addr;
+
+	struct niu_link_config		link_config;
+
+	struct work_struct		reset_task;
+
+	u8				port;
+	u8				mac_xcvr;
+#define MAC_XCVR_MII			1
+#define MAC_XCVR_PCS			2
+#define MAC_XCVR_XPCS			3
+
+	struct niu_classifier		clas;
+
+	struct niu_vpd			vpd;
+	u32				eeprom_len;
+
+	struct platform_device		*op;
+	void __iomem			*vir_regs_1;
+	void __iomem			*vir_regs_2;
+};
+
+#endif /* _NIU_H */
diff --git a/drivers/net/ethernet/sun/sunbmac.c b/drivers/net/ethernet/sun/sunbmac.c
new file mode 100644
index 000000000..720b7ac77
--- /dev/null
+++ b/drivers/net/ethernet/sun/sunbmac.c
@@ -0,0 +1,1282 @@
+// SPDX-License-Identifier: GPL-2.0
+/* sunbmac.c: Driver for Sparc BigMAC 100baseT ethernet adapters.
+ *
+ * Copyright (C) 1997, 1998, 1999, 2003, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/crc32.h>
+#include <linux/errno.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/bitops.h>
+#include <linux/dma-mapping.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/gfp.h>
+
+#include <asm/auxio.h>
+#include <asm/byteorder.h>
+#include <asm/dma.h>
+#include <asm/idprom.h>
+#include <asm/io.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/pgtable.h>
+
+#include "sunbmac.h"
+
+#define DRV_NAME	"sunbmac"
+#define DRV_VERSION	"2.1"
+#define DRV_RELDATE	"August 26, 2008"
+#define DRV_AUTHOR	"David S. Miller (davem@davemloft.net)"
+
+static char version[] =
+	DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "\n";
+
+MODULE_VERSION(DRV_VERSION);
+MODULE_AUTHOR(DRV_AUTHOR);
+MODULE_DESCRIPTION("Sun BigMAC 100baseT ethernet driver");
+MODULE_LICENSE("GPL");
+
+#undef DEBUG_PROBE
+#undef DEBUG_TX
+#undef DEBUG_IRQ
+
+#ifdef DEBUG_PROBE
+#define DP(x)  printk x
+#else
+#define DP(x)
+#endif
+
+#ifdef DEBUG_TX
+#define DTX(x)  printk x
+#else
+#define DTX(x)
+#endif
+
+#ifdef DEBUG_IRQ
+#define DIRQ(x)  printk x
+#else
+#define DIRQ(x)
+#endif
+
+#define DEFAULT_JAMSIZE    4 /* Toe jam */
+
+#define QEC_RESET_TRIES 200
+
+static int qec_global_reset(void __iomem *gregs)
+{
+	int tries = QEC_RESET_TRIES;
+
+	sbus_writel(GLOB_CTRL_RESET, gregs + GLOB_CTRL);
+	while (--tries) {
+		if (sbus_readl(gregs + GLOB_CTRL) & GLOB_CTRL_RESET) {
+			udelay(20);
+			continue;
+		}
+		break;
+	}
+	if (tries)
+		return 0;
+	printk(KERN_ERR "BigMAC: Cannot reset the QEC.\n");
+	return -1;
+}
+
+static void qec_init(struct bigmac *bp)
+{
+	struct platform_device *qec_op = bp->qec_op;
+	void __iomem *gregs = bp->gregs;
+	u8 bsizes = bp->bigmac_bursts;
+	u32 regval;
+
+	/* 64byte bursts do not work at the moment, do
+	 * not even try to enable them.  -DaveM
+	 */
+	if (bsizes & DMA_BURST32)
+		regval = GLOB_CTRL_B32;
+	else
+		regval = GLOB_CTRL_B16;
+	sbus_writel(regval | GLOB_CTRL_BMODE, gregs + GLOB_CTRL);
+	sbus_writel(GLOB_PSIZE_2048, gregs + GLOB_PSIZE);
+
+	/* All of memsize is given to bigmac. */
+	sbus_writel(resource_size(&qec_op->resource[1]),
+		    gregs + GLOB_MSIZE);
+
+	/* Half to the transmitter, half to the receiver. */
+	sbus_writel(resource_size(&qec_op->resource[1]) >> 1,
+		    gregs + GLOB_TSIZE);
+	sbus_writel(resource_size(&qec_op->resource[1]) >> 1,
+		    gregs + GLOB_RSIZE);
+}
+
+#define TX_RESET_TRIES     32
+#define RX_RESET_TRIES     32
+
+static void bigmac_tx_reset(void __iomem *bregs)
+{
+	int tries = TX_RESET_TRIES;
+
+	sbus_writel(0, bregs + BMAC_TXCFG);
+
+	/* The fifo threshold bit is read-only and does
+	 * not clear.  -DaveM
+	 */
+	while ((sbus_readl(bregs + BMAC_TXCFG) & ~(BIGMAC_TXCFG_FIFO)) != 0 &&
+	       --tries != 0)
+		udelay(20);
+
+	if (!tries) {
+		printk(KERN_ERR "BIGMAC: Transmitter will not reset.\n");
+		printk(KERN_ERR "BIGMAC: tx_cfg is %08x\n",
+		       sbus_readl(bregs + BMAC_TXCFG));
+	}
+}
+
+static void bigmac_rx_reset(void __iomem *bregs)
+{
+	int tries = RX_RESET_TRIES;
+
+	sbus_writel(0, bregs + BMAC_RXCFG);
+	while (sbus_readl(bregs + BMAC_RXCFG) && --tries)
+		udelay(20);
+
+	if (!tries) {
+		printk(KERN_ERR "BIGMAC: Receiver will not reset.\n");
+		printk(KERN_ERR "BIGMAC: rx_cfg is %08x\n",
+		       sbus_readl(bregs + BMAC_RXCFG));
+	}
+}
+
+/* Reset the transmitter and receiver. */
+static void bigmac_stop(struct bigmac *bp)
+{
+	bigmac_tx_reset(bp->bregs);
+	bigmac_rx_reset(bp->bregs);
+}
+
+static void bigmac_get_counters(struct bigmac *bp, void __iomem *bregs)
+{
+	struct net_device_stats *stats = &bp->dev->stats;
+
+	stats->rx_crc_errors += sbus_readl(bregs + BMAC_RCRCECTR);
+	sbus_writel(0, bregs + BMAC_RCRCECTR);
+
+	stats->rx_frame_errors += sbus_readl(bregs + BMAC_UNALECTR);
+	sbus_writel(0, bregs + BMAC_UNALECTR);
+
+	stats->rx_length_errors += sbus_readl(bregs + BMAC_GLECTR);
+	sbus_writel(0, bregs + BMAC_GLECTR);
+
+	stats->tx_aborted_errors += sbus_readl(bregs + BMAC_EXCTR);
+
+	stats->collisions +=
+		(sbus_readl(bregs + BMAC_EXCTR) +
+		 sbus_readl(bregs + BMAC_LTCTR));
+	sbus_writel(0, bregs + BMAC_EXCTR);
+	sbus_writel(0, bregs + BMAC_LTCTR);
+}
+
+static void bigmac_clean_rings(struct bigmac *bp)
+{
+	int i;
+
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		if (bp->rx_skbs[i] != NULL) {
+			dev_kfree_skb_any(bp->rx_skbs[i]);
+			bp->rx_skbs[i] = NULL;
+		}
+	}
+
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		if (bp->tx_skbs[i] != NULL) {
+			dev_kfree_skb_any(bp->tx_skbs[i]);
+			bp->tx_skbs[i] = NULL;
+		}
+	}
+}
+
+static void bigmac_init_rings(struct bigmac *bp, int from_irq)
+{
+	struct bmac_init_block *bb = bp->bmac_block;
+	int i;
+	gfp_t gfp_flags = GFP_KERNEL;
+
+	if (from_irq || in_interrupt())
+		gfp_flags = GFP_ATOMIC;
+
+	bp->rx_new = bp->rx_old = bp->tx_new = bp->tx_old = 0;
+
+	/* Free any skippy bufs left around in the rings. */
+	bigmac_clean_rings(bp);
+
+	/* Now get new skbufs for the receive ring. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		struct sk_buff *skb;
+
+		skb = big_mac_alloc_skb(RX_BUF_ALLOC_SIZE, gfp_flags);
+		if (!skb)
+			continue;
+
+		bp->rx_skbs[i] = skb;
+
+		/* Because we reserve afterwards. */
+		skb_put(skb, ETH_FRAME_LEN);
+		skb_reserve(skb, 34);
+
+		bb->be_rxd[i].rx_addr =
+			dma_map_single(&bp->bigmac_op->dev,
+				       skb->data,
+				       RX_BUF_ALLOC_SIZE - 34,
+				       DMA_FROM_DEVICE);
+		bb->be_rxd[i].rx_flags =
+			(RXD_OWN | ((RX_BUF_ALLOC_SIZE - 34) & RXD_LENGTH));
+	}
+
+	for (i = 0; i < TX_RING_SIZE; i++)
+		bb->be_txd[i].tx_flags = bb->be_txd[i].tx_addr = 0;
+}
+
+#define MGMT_CLKON  (MGMT_PAL_INT_MDIO|MGMT_PAL_EXT_MDIO|MGMT_PAL_OENAB|MGMT_PAL_DCLOCK)
+#define MGMT_CLKOFF (MGMT_PAL_INT_MDIO|MGMT_PAL_EXT_MDIO|MGMT_PAL_OENAB)
+
+static void idle_transceiver(void __iomem *tregs)
+{
+	int i = 20;
+
+	while (i--) {
+		sbus_writel(MGMT_CLKOFF, tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+		sbus_writel(MGMT_CLKON, tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+	}
+}
+
+static void write_tcvr_bit(struct bigmac *bp, void __iomem *tregs, int bit)
+{
+	if (bp->tcvr_type == internal) {
+		bit = (bit & 1) << 3;
+		sbus_writel(bit | (MGMT_PAL_OENAB | MGMT_PAL_EXT_MDIO),
+			    tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+		sbus_writel(bit | MGMT_PAL_OENAB | MGMT_PAL_EXT_MDIO | MGMT_PAL_DCLOCK,
+			    tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+	} else if (bp->tcvr_type == external) {
+		bit = (bit & 1) << 2;
+		sbus_writel(bit | MGMT_PAL_INT_MDIO | MGMT_PAL_OENAB,
+			    tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+		sbus_writel(bit | MGMT_PAL_INT_MDIO | MGMT_PAL_OENAB | MGMT_PAL_DCLOCK,
+			    tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+	} else {
+		printk(KERN_ERR "write_tcvr_bit: No transceiver type known!\n");
+	}
+}
+
+static int read_tcvr_bit(struct bigmac *bp, void __iomem *tregs)
+{
+	int retval = 0;
+
+	if (bp->tcvr_type == internal) {
+		sbus_writel(MGMT_PAL_EXT_MDIO, tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+		sbus_writel(MGMT_PAL_EXT_MDIO | MGMT_PAL_DCLOCK,
+			    tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+		retval = (sbus_readl(tregs + TCVR_MPAL) & MGMT_PAL_INT_MDIO) >> 3;
+	} else if (bp->tcvr_type == external) {
+		sbus_writel(MGMT_PAL_INT_MDIO, tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+		sbus_writel(MGMT_PAL_INT_MDIO | MGMT_PAL_DCLOCK, tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+		retval = (sbus_readl(tregs + TCVR_MPAL) & MGMT_PAL_EXT_MDIO) >> 2;
+	} else {
+		printk(KERN_ERR "read_tcvr_bit: No transceiver type known!\n");
+	}
+	return retval;
+}
+
+static int read_tcvr_bit2(struct bigmac *bp, void __iomem *tregs)
+{
+	int retval = 0;
+
+	if (bp->tcvr_type == internal) {
+		sbus_writel(MGMT_PAL_EXT_MDIO, tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+		retval = (sbus_readl(tregs + TCVR_MPAL) & MGMT_PAL_INT_MDIO) >> 3;
+		sbus_writel(MGMT_PAL_EXT_MDIO | MGMT_PAL_DCLOCK, tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+	} else if (bp->tcvr_type == external) {
+		sbus_writel(MGMT_PAL_INT_MDIO, tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+		retval = (sbus_readl(tregs + TCVR_MPAL) & MGMT_PAL_EXT_MDIO) >> 2;
+		sbus_writel(MGMT_PAL_INT_MDIO | MGMT_PAL_DCLOCK, tregs + TCVR_MPAL);
+		sbus_readl(tregs + TCVR_MPAL);
+	} else {
+		printk(KERN_ERR "read_tcvr_bit2: No transceiver type known!\n");
+	}
+	return retval;
+}
+
+static void put_tcvr_byte(struct bigmac *bp,
+			  void __iomem *tregs,
+			  unsigned int byte)
+{
+	int shift = 4;
+
+	do {
+		write_tcvr_bit(bp, tregs, ((byte >> shift) & 1));
+		shift -= 1;
+	} while (shift >= 0);
+}
+
+static void bigmac_tcvr_write(struct bigmac *bp, void __iomem *tregs,
+			      int reg, unsigned short val)
+{
+	int shift;
+
+	reg &= 0xff;
+	val &= 0xffff;
+	switch(bp->tcvr_type) {
+	case internal:
+	case external:
+		break;
+
+	default:
+		printk(KERN_ERR "bigmac_tcvr_read: Whoops, no known transceiver type.\n");
+		return;
+	}
+
+	idle_transceiver(tregs);
+	write_tcvr_bit(bp, tregs, 0);
+	write_tcvr_bit(bp, tregs, 1);
+	write_tcvr_bit(bp, tregs, 0);
+	write_tcvr_bit(bp, tregs, 1);
+
+	put_tcvr_byte(bp, tregs,
+		      ((bp->tcvr_type == internal) ?
+		       BIGMAC_PHY_INTERNAL : BIGMAC_PHY_EXTERNAL));
+
+	put_tcvr_byte(bp, tregs, reg);
+
+	write_tcvr_bit(bp, tregs, 1);
+	write_tcvr_bit(bp, tregs, 0);
+
+	shift = 15;
+	do {
+		write_tcvr_bit(bp, tregs, (val >> shift) & 1);
+		shift -= 1;
+	} while (shift >= 0);
+}
+
+static unsigned short bigmac_tcvr_read(struct bigmac *bp,
+				       void __iomem *tregs,
+				       int reg)
+{
+	unsigned short retval = 0;
+
+	reg &= 0xff;
+	switch(bp->tcvr_type) {
+	case internal:
+	case external:
+		break;
+
+	default:
+		printk(KERN_ERR "bigmac_tcvr_read: Whoops, no known transceiver type.\n");
+		return 0xffff;
+	}
+
+	idle_transceiver(tregs);
+	write_tcvr_bit(bp, tregs, 0);
+	write_tcvr_bit(bp, tregs, 1);
+	write_tcvr_bit(bp, tregs, 1);
+	write_tcvr_bit(bp, tregs, 0);
+
+	put_tcvr_byte(bp, tregs,
+		      ((bp->tcvr_type == internal) ?
+		       BIGMAC_PHY_INTERNAL : BIGMAC_PHY_EXTERNAL));
+
+	put_tcvr_byte(bp, tregs, reg);
+
+	if (bp->tcvr_type == external) {
+		int shift = 15;
+
+		(void) read_tcvr_bit2(bp, tregs);
+		(void) read_tcvr_bit2(bp, tregs);
+
+		do {
+			int tmp;
+
+			tmp = read_tcvr_bit2(bp, tregs);
+			retval |= ((tmp & 1) << shift);
+			shift -= 1;
+		} while (shift >= 0);
+
+		(void) read_tcvr_bit2(bp, tregs);
+		(void) read_tcvr_bit2(bp, tregs);
+		(void) read_tcvr_bit2(bp, tregs);
+	} else {
+		int shift = 15;
+
+		(void) read_tcvr_bit(bp, tregs);
+		(void) read_tcvr_bit(bp, tregs);
+
+		do {
+			int tmp;
+
+			tmp = read_tcvr_bit(bp, tregs);
+			retval |= ((tmp & 1) << shift);
+			shift -= 1;
+		} while (shift >= 0);
+
+		(void) read_tcvr_bit(bp, tregs);
+		(void) read_tcvr_bit(bp, tregs);
+		(void) read_tcvr_bit(bp, tregs);
+	}
+	return retval;
+}
+
+static void bigmac_tcvr_init(struct bigmac *bp)
+{
+	void __iomem *tregs = bp->tregs;
+	u32 mpal;
+
+	idle_transceiver(tregs);
+	sbus_writel(MGMT_PAL_INT_MDIO | MGMT_PAL_EXT_MDIO | MGMT_PAL_DCLOCK,
+		    tregs + TCVR_MPAL);
+	sbus_readl(tregs + TCVR_MPAL);
+
+	/* Only the bit for the present transceiver (internal or
+	 * external) will stick, set them both and see what stays.
+	 */
+	sbus_writel(MGMT_PAL_INT_MDIO | MGMT_PAL_EXT_MDIO, tregs + TCVR_MPAL);
+	sbus_readl(tregs + TCVR_MPAL);
+	udelay(20);
+
+	mpal = sbus_readl(tregs + TCVR_MPAL);
+	if (mpal & MGMT_PAL_EXT_MDIO) {
+		bp->tcvr_type = external;
+		sbus_writel(~(TCVR_PAL_EXTLBACK | TCVR_PAL_MSENSE | TCVR_PAL_LTENABLE),
+			    tregs + TCVR_TPAL);
+		sbus_readl(tregs + TCVR_TPAL);
+	} else if (mpal & MGMT_PAL_INT_MDIO) {
+		bp->tcvr_type = internal;
+		sbus_writel(~(TCVR_PAL_SERIAL | TCVR_PAL_EXTLBACK |
+			      TCVR_PAL_MSENSE | TCVR_PAL_LTENABLE),
+			    tregs + TCVR_TPAL);
+		sbus_readl(tregs + TCVR_TPAL);
+	} else {
+		printk(KERN_ERR "BIGMAC: AIEEE, neither internal nor "
+		       "external MDIO available!\n");
+		printk(KERN_ERR "BIGMAC: mgmt_pal[%08x] tcvr_pal[%08x]\n",
+		       sbus_readl(tregs + TCVR_MPAL),
+		       sbus_readl(tregs + TCVR_TPAL));
+	}
+}
+
+static int bigmac_init_hw(struct bigmac *, int);
+
+static int try_next_permutation(struct bigmac *bp, void __iomem *tregs)
+{
+	if (bp->sw_bmcr & BMCR_SPEED100) {
+		int timeout;
+
+		/* Reset the PHY. */
+		bp->sw_bmcr	= (BMCR_ISOLATE | BMCR_PDOWN | BMCR_LOOPBACK);
+		bigmac_tcvr_write(bp, tregs, MII_BMCR, bp->sw_bmcr);
+		bp->sw_bmcr	= (BMCR_RESET);
+		bigmac_tcvr_write(bp, tregs, MII_BMCR, bp->sw_bmcr);
+
+		timeout = 64;
+		while (--timeout) {
+			bp->sw_bmcr = bigmac_tcvr_read(bp, tregs, MII_BMCR);
+			if ((bp->sw_bmcr & BMCR_RESET) == 0)
+				break;
+			udelay(20);
+		}
+		if (timeout == 0)
+			printk(KERN_ERR "%s: PHY reset failed.\n", bp->dev->name);
+
+		bp->sw_bmcr = bigmac_tcvr_read(bp, tregs, MII_BMCR);
+
+		/* Now we try 10baseT. */
+		bp->sw_bmcr &= ~(BMCR_SPEED100);
+		bigmac_tcvr_write(bp, tregs, MII_BMCR, bp->sw_bmcr);
+		return 0;
+	}
+
+	/* We've tried them all. */
+	return -1;
+}
+
+static void bigmac_timer(struct timer_list *t)
+{
+	struct bigmac *bp = from_timer(bp, t, bigmac_timer);
+	void __iomem *tregs = bp->tregs;
+	int restart_timer = 0;
+
+	bp->timer_ticks++;
+	if (bp->timer_state == ltrywait) {
+		bp->sw_bmsr = bigmac_tcvr_read(bp, tregs, MII_BMSR);
+		bp->sw_bmcr = bigmac_tcvr_read(bp, tregs, MII_BMCR);
+		if (bp->sw_bmsr & BMSR_LSTATUS) {
+			printk(KERN_INFO "%s: Link is now up at %s.\n",
+			       bp->dev->name,
+			       (bp->sw_bmcr & BMCR_SPEED100) ?
+			       "100baseT" : "10baseT");
+			bp->timer_state = asleep;
+			restart_timer = 0;
+		} else {
+			if (bp->timer_ticks >= 4) {
+				int ret;
+
+				ret = try_next_permutation(bp, tregs);
+				if (ret == -1) {
+					printk(KERN_ERR "%s: Link down, cable problem?\n",
+					       bp->dev->name);
+					ret = bigmac_init_hw(bp, 0);
+					if (ret) {
+						printk(KERN_ERR "%s: Error, cannot re-init the "
+						       "BigMAC.\n", bp->dev->name);
+					}
+					return;
+				}
+				bp->timer_ticks = 0;
+				restart_timer = 1;
+			} else {
+				restart_timer = 1;
+			}
+		}
+	} else {
+		/* Can't happens.... */
+		printk(KERN_ERR "%s: Aieee, link timer is asleep but we got one anyways!\n",
+		       bp->dev->name);
+		restart_timer = 0;
+		bp->timer_ticks = 0;
+		bp->timer_state = asleep; /* foo on you */
+	}
+
+	if (restart_timer != 0) {
+		bp->bigmac_timer.expires = jiffies + ((12 * HZ)/10); /* 1.2 sec. */
+		add_timer(&bp->bigmac_timer);
+	}
+}
+
+/* Well, really we just force the chip into 100baseT then
+ * 10baseT, each time checking for a link status.
+ */
+static void bigmac_begin_auto_negotiation(struct bigmac *bp)
+{
+	void __iomem *tregs = bp->tregs;
+	int timeout;
+
+	/* Grab new software copies of PHY registers. */
+	bp->sw_bmsr	= bigmac_tcvr_read(bp, tregs, MII_BMSR);
+	bp->sw_bmcr	= bigmac_tcvr_read(bp, tregs, MII_BMCR);
+
+	/* Reset the PHY. */
+	bp->sw_bmcr	= (BMCR_ISOLATE | BMCR_PDOWN | BMCR_LOOPBACK);
+	bigmac_tcvr_write(bp, tregs, MII_BMCR, bp->sw_bmcr);
+	bp->sw_bmcr	= (BMCR_RESET);
+	bigmac_tcvr_write(bp, tregs, MII_BMCR, bp->sw_bmcr);
+
+	timeout = 64;
+	while (--timeout) {
+		bp->sw_bmcr = bigmac_tcvr_read(bp, tregs, MII_BMCR);
+		if ((bp->sw_bmcr & BMCR_RESET) == 0)
+			break;
+		udelay(20);
+	}
+	if (timeout == 0)
+		printk(KERN_ERR "%s: PHY reset failed.\n", bp->dev->name);
+
+	bp->sw_bmcr = bigmac_tcvr_read(bp, tregs, MII_BMCR);
+
+	/* First we try 100baseT. */
+	bp->sw_bmcr |= BMCR_SPEED100;
+	bigmac_tcvr_write(bp, tregs, MII_BMCR, bp->sw_bmcr);
+
+	bp->timer_state = ltrywait;
+	bp->timer_ticks = 0;
+	bp->bigmac_timer.expires = jiffies + (12 * HZ) / 10;
+	add_timer(&bp->bigmac_timer);
+}
+
+static int bigmac_init_hw(struct bigmac *bp, int from_irq)
+{
+	void __iomem *gregs        = bp->gregs;
+	void __iomem *cregs        = bp->creg;
+	void __iomem *bregs        = bp->bregs;
+	__u32 bblk_dvma = (__u32)bp->bblock_dvma;
+	unsigned char *e = &bp->dev->dev_addr[0];
+
+	/* Latch current counters into statistics. */
+	bigmac_get_counters(bp, bregs);
+
+	/* Reset QEC. */
+	qec_global_reset(gregs);
+
+	/* Init QEC. */
+	qec_init(bp);
+
+	/* Alloc and reset the tx/rx descriptor chains. */
+	bigmac_init_rings(bp, from_irq);
+
+	/* Initialize the PHY. */
+	bigmac_tcvr_init(bp);
+
+	/* Stop transmitter and receiver. */
+	bigmac_stop(bp);
+
+	/* Set hardware ethernet address. */
+	sbus_writel(((e[4] << 8) | e[5]), bregs + BMAC_MACADDR2);
+	sbus_writel(((e[2] << 8) | e[3]), bregs + BMAC_MACADDR1);
+	sbus_writel(((e[0] << 8) | e[1]), bregs + BMAC_MACADDR0);
+
+	/* Clear the hash table until mc upload occurs. */
+	sbus_writel(0, bregs + BMAC_HTABLE3);
+	sbus_writel(0, bregs + BMAC_HTABLE2);
+	sbus_writel(0, bregs + BMAC_HTABLE1);
+	sbus_writel(0, bregs + BMAC_HTABLE0);
+
+	/* Enable Big Mac hash table filter. */
+	sbus_writel(BIGMAC_RXCFG_HENABLE | BIGMAC_RXCFG_FIFO,
+		    bregs + BMAC_RXCFG);
+	udelay(20);
+
+	/* Ok, configure the Big Mac transmitter. */
+	sbus_writel(BIGMAC_TXCFG_FIFO, bregs + BMAC_TXCFG);
+
+	/* The HME docs recommend to use the 10LSB of our MAC here. */
+	sbus_writel(((e[5] | e[4] << 8) & 0x3ff),
+		    bregs + BMAC_RSEED);
+
+	/* Enable the output drivers no matter what. */
+	sbus_writel(BIGMAC_XCFG_ODENABLE | BIGMAC_XCFG_RESV,
+		    bregs + BMAC_XIFCFG);
+
+	/* Tell the QEC where the ring descriptors are. */
+	sbus_writel(bblk_dvma + bib_offset(be_rxd, 0),
+		    cregs + CREG_RXDS);
+	sbus_writel(bblk_dvma + bib_offset(be_txd, 0),
+		    cregs + CREG_TXDS);
+
+	/* Setup the FIFO pointers into QEC local memory. */
+	sbus_writel(0, cregs + CREG_RXRBUFPTR);
+	sbus_writel(0, cregs + CREG_RXWBUFPTR);
+	sbus_writel(sbus_readl(gregs + GLOB_RSIZE),
+		    cregs + CREG_TXRBUFPTR);
+	sbus_writel(sbus_readl(gregs + GLOB_RSIZE),
+		    cregs + CREG_TXWBUFPTR);
+
+	/* Tell bigmac what interrupts we don't want to hear about. */
+	sbus_writel(BIGMAC_IMASK_GOTFRAME | BIGMAC_IMASK_SENTFRAME,
+		    bregs + BMAC_IMASK);
+
+	/* Enable the various other irq's. */
+	sbus_writel(0, cregs + CREG_RIMASK);
+	sbus_writel(0, cregs + CREG_TIMASK);
+	sbus_writel(0, cregs + CREG_QMASK);
+	sbus_writel(0, cregs + CREG_BMASK);
+
+	/* Set jam size to a reasonable default. */
+	sbus_writel(DEFAULT_JAMSIZE, bregs + BMAC_JSIZE);
+
+	/* Clear collision counter. */
+	sbus_writel(0, cregs + CREG_CCNT);
+
+	/* Enable transmitter and receiver. */
+	sbus_writel(sbus_readl(bregs + BMAC_TXCFG) | BIGMAC_TXCFG_ENABLE,
+		    bregs + BMAC_TXCFG);
+	sbus_writel(sbus_readl(bregs + BMAC_RXCFG) | BIGMAC_RXCFG_ENABLE,
+		    bregs + BMAC_RXCFG);
+
+	/* Ok, start detecting link speed/duplex. */
+	bigmac_begin_auto_negotiation(bp);
+
+	/* Success. */
+	return 0;
+}
+
+/* Error interrupts get sent here. */
+static void bigmac_is_medium_rare(struct bigmac *bp, u32 qec_status, u32 bmac_status)
+{
+	printk(KERN_ERR "bigmac_is_medium_rare: ");
+	if (qec_status & (GLOB_STAT_ER | GLOB_STAT_BM)) {
+		if (qec_status & GLOB_STAT_ER)
+			printk("QEC_ERROR, ");
+		if (qec_status & GLOB_STAT_BM)
+			printk("QEC_BMAC_ERROR, ");
+	}
+	if (bmac_status & CREG_STAT_ERRORS) {
+		if (bmac_status & CREG_STAT_BERROR)
+			printk("BMAC_ERROR, ");
+		if (bmac_status & CREG_STAT_TXDERROR)
+			printk("TXD_ERROR, ");
+		if (bmac_status & CREG_STAT_TXLERR)
+			printk("TX_LATE_ERROR, ");
+		if (bmac_status & CREG_STAT_TXPERR)
+			printk("TX_PARITY_ERROR, ");
+		if (bmac_status & CREG_STAT_TXSERR)
+			printk("TX_SBUS_ERROR, ");
+
+		if (bmac_status & CREG_STAT_RXDROP)
+			printk("RX_DROP_ERROR, ");
+
+		if (bmac_status & CREG_STAT_RXSMALL)
+			printk("RX_SMALL_ERROR, ");
+		if (bmac_status & CREG_STAT_RXLERR)
+			printk("RX_LATE_ERROR, ");
+		if (bmac_status & CREG_STAT_RXPERR)
+			printk("RX_PARITY_ERROR, ");
+		if (bmac_status & CREG_STAT_RXSERR)
+			printk("RX_SBUS_ERROR, ");
+	}
+
+	printk(" RESET\n");
+	bigmac_init_hw(bp, 1);
+}
+
+/* BigMAC transmit complete service routines. */
+static void bigmac_tx(struct bigmac *bp)
+{
+	struct be_txd *txbase = &bp->bmac_block->be_txd[0];
+	struct net_device *dev = bp->dev;
+	int elem;
+
+	spin_lock(&bp->lock);
+
+	elem = bp->tx_old;
+	DTX(("bigmac_tx: tx_old[%d] ", elem));
+	while (elem != bp->tx_new) {
+		struct sk_buff *skb;
+		struct be_txd *this = &txbase[elem];
+
+		DTX(("this(%p) [flags(%08x)addr(%08x)]",
+		     this, this->tx_flags, this->tx_addr));
+
+		if (this->tx_flags & TXD_OWN)
+			break;
+		skb = bp->tx_skbs[elem];
+		dev->stats.tx_packets++;
+		dev->stats.tx_bytes += skb->len;
+		dma_unmap_single(&bp->bigmac_op->dev,
+				 this->tx_addr, skb->len,
+				 DMA_TO_DEVICE);
+
+		DTX(("skb(%p) ", skb));
+		bp->tx_skbs[elem] = NULL;
+		dev_kfree_skb_irq(skb);
+
+		elem = NEXT_TX(elem);
+	}
+	DTX((" DONE, tx_old=%d\n", elem));
+	bp->tx_old = elem;
+
+	if (netif_queue_stopped(dev) &&
+	    TX_BUFFS_AVAIL(bp) > 0)
+		netif_wake_queue(bp->dev);
+
+	spin_unlock(&bp->lock);
+}
+
+/* BigMAC receive complete service routines. */
+static void bigmac_rx(struct bigmac *bp)
+{
+	struct be_rxd *rxbase = &bp->bmac_block->be_rxd[0];
+	struct be_rxd *this;
+	int elem = bp->rx_new, drops = 0;
+	u32 flags;
+
+	this = &rxbase[elem];
+	while (!((flags = this->rx_flags) & RXD_OWN)) {
+		struct sk_buff *skb;
+		int len = (flags & RXD_LENGTH); /* FCS not included */
+
+		/* Check for errors. */
+		if (len < ETH_ZLEN) {
+			bp->dev->stats.rx_errors++;
+			bp->dev->stats.rx_length_errors++;
+
+	drop_it:
+			/* Return it to the BigMAC. */
+			bp->dev->stats.rx_dropped++;
+			this->rx_flags =
+				(RXD_OWN | ((RX_BUF_ALLOC_SIZE - 34) & RXD_LENGTH));
+			goto next;
+		}
+		skb = bp->rx_skbs[elem];
+		if (len > RX_COPY_THRESHOLD) {
+			struct sk_buff *new_skb;
+
+			/* Now refill the entry, if we can. */
+			new_skb = big_mac_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC);
+			if (new_skb == NULL) {
+				drops++;
+				goto drop_it;
+			}
+			dma_unmap_single(&bp->bigmac_op->dev,
+					 this->rx_addr,
+					 RX_BUF_ALLOC_SIZE - 34,
+					 DMA_FROM_DEVICE);
+			bp->rx_skbs[elem] = new_skb;
+			skb_put(new_skb, ETH_FRAME_LEN);
+			skb_reserve(new_skb, 34);
+			this->rx_addr =
+				dma_map_single(&bp->bigmac_op->dev,
+					       new_skb->data,
+					       RX_BUF_ALLOC_SIZE - 34,
+					       DMA_FROM_DEVICE);
+			this->rx_flags =
+				(RXD_OWN | ((RX_BUF_ALLOC_SIZE - 34) & RXD_LENGTH));
+
+			/* Trim the original skb for the netif. */
+			skb_trim(skb, len);
+		} else {
+			struct sk_buff *copy_skb = netdev_alloc_skb(bp->dev, len + 2);
+
+			if (copy_skb == NULL) {
+				drops++;
+				goto drop_it;
+			}
+			skb_reserve(copy_skb, 2);
+			skb_put(copy_skb, len);
+			dma_sync_single_for_cpu(&bp->bigmac_op->dev,
+						this->rx_addr, len,
+						DMA_FROM_DEVICE);
+			skb_copy_to_linear_data(copy_skb, (unsigned char *)skb->data, len);
+			dma_sync_single_for_device(&bp->bigmac_op->dev,
+						   this->rx_addr, len,
+						   DMA_FROM_DEVICE);
+
+			/* Reuse original ring buffer. */
+			this->rx_flags =
+				(RXD_OWN | ((RX_BUF_ALLOC_SIZE - 34) & RXD_LENGTH));
+
+			skb = copy_skb;
+		}
+
+		/* No checksums done by the BigMAC ;-( */
+		skb->protocol = eth_type_trans(skb, bp->dev);
+		netif_rx(skb);
+		bp->dev->stats.rx_packets++;
+		bp->dev->stats.rx_bytes += len;
+	next:
+		elem = NEXT_RX(elem);
+		this = &rxbase[elem];
+	}
+	bp->rx_new = elem;
+	if (drops)
+		printk(KERN_NOTICE "%s: Memory squeeze, deferring packet.\n", bp->dev->name);
+}
+
+static irqreturn_t bigmac_interrupt(int irq, void *dev_id)
+{
+	struct bigmac *bp = (struct bigmac *) dev_id;
+	u32 qec_status, bmac_status;
+
+	DIRQ(("bigmac_interrupt: "));
+
+	/* Latch status registers now. */
+	bmac_status = sbus_readl(bp->creg + CREG_STAT);
+	qec_status = sbus_readl(bp->gregs + GLOB_STAT);
+
+	DIRQ(("qec_status=%08x bmac_status=%08x\n", qec_status, bmac_status));
+	if ((qec_status & (GLOB_STAT_ER | GLOB_STAT_BM)) ||
+	   (bmac_status & CREG_STAT_ERRORS))
+		bigmac_is_medium_rare(bp, qec_status, bmac_status);
+
+	if (bmac_status & CREG_STAT_TXIRQ)
+		bigmac_tx(bp);
+
+	if (bmac_status & CREG_STAT_RXIRQ)
+		bigmac_rx(bp);
+
+	return IRQ_HANDLED;
+}
+
+static int bigmac_open(struct net_device *dev)
+{
+	struct bigmac *bp = netdev_priv(dev);
+	int ret;
+
+	ret = request_irq(dev->irq, bigmac_interrupt, IRQF_SHARED, dev->name, bp);
+	if (ret) {
+		printk(KERN_ERR "BIGMAC: Can't order irq %d to go.\n", dev->irq);
+		return ret;
+	}
+	timer_setup(&bp->bigmac_timer, bigmac_timer, 0);
+	ret = bigmac_init_hw(bp, 0);
+	if (ret)
+		free_irq(dev->irq, bp);
+	return ret;
+}
+
+static int bigmac_close(struct net_device *dev)
+{
+	struct bigmac *bp = netdev_priv(dev);
+
+	del_timer(&bp->bigmac_timer);
+	bp->timer_state = asleep;
+	bp->timer_ticks = 0;
+
+	bigmac_stop(bp);
+	bigmac_clean_rings(bp);
+	free_irq(dev->irq, bp);
+	return 0;
+}
+
+static void bigmac_tx_timeout(struct net_device *dev)
+{
+	struct bigmac *bp = netdev_priv(dev);
+
+	bigmac_init_hw(bp, 0);
+	netif_wake_queue(dev);
+}
+
+/* Put a packet on the wire. */
+static netdev_tx_t
+bigmac_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct bigmac *bp = netdev_priv(dev);
+	int len, entry;
+	u32 mapping;
+
+	len = skb->len;
+	mapping = dma_map_single(&bp->bigmac_op->dev, skb->data,
+				 len, DMA_TO_DEVICE);
+
+	/* Avoid a race... */
+	spin_lock_irq(&bp->lock);
+	entry = bp->tx_new;
+	DTX(("bigmac_start_xmit: len(%d) entry(%d)\n", len, entry));
+	bp->bmac_block->be_txd[entry].tx_flags = TXD_UPDATE;
+	bp->tx_skbs[entry] = skb;
+	bp->bmac_block->be_txd[entry].tx_addr = mapping;
+	bp->bmac_block->be_txd[entry].tx_flags =
+		(TXD_OWN | TXD_SOP | TXD_EOP | (len & TXD_LENGTH));
+	bp->tx_new = NEXT_TX(entry);
+	if (TX_BUFFS_AVAIL(bp) <= 0)
+		netif_stop_queue(dev);
+	spin_unlock_irq(&bp->lock);
+
+	/* Get it going. */
+	sbus_writel(CREG_CTRL_TWAKEUP, bp->creg + CREG_CTRL);
+
+
+	return NETDEV_TX_OK;
+}
+
+static struct net_device_stats *bigmac_get_stats(struct net_device *dev)
+{
+	struct bigmac *bp = netdev_priv(dev);
+
+	bigmac_get_counters(bp, bp->bregs);
+	return &dev->stats;
+}
+
+static void bigmac_set_multicast(struct net_device *dev)
+{
+	struct bigmac *bp = netdev_priv(dev);
+	void __iomem *bregs = bp->bregs;
+	struct netdev_hw_addr *ha;
+	u32 tmp, crc;
+
+	/* Disable the receiver.  The bit self-clears when
+	 * the operation is complete.
+	 */
+	tmp = sbus_readl(bregs + BMAC_RXCFG);
+	tmp &= ~(BIGMAC_RXCFG_ENABLE);
+	sbus_writel(tmp, bregs + BMAC_RXCFG);
+	while ((sbus_readl(bregs + BMAC_RXCFG) & BIGMAC_RXCFG_ENABLE) != 0)
+		udelay(20);
+
+	if ((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) {
+		sbus_writel(0xffff, bregs + BMAC_HTABLE0);
+		sbus_writel(0xffff, bregs + BMAC_HTABLE1);
+		sbus_writel(0xffff, bregs + BMAC_HTABLE2);
+		sbus_writel(0xffff, bregs + BMAC_HTABLE3);
+	} else if (dev->flags & IFF_PROMISC) {
+		tmp = sbus_readl(bregs + BMAC_RXCFG);
+		tmp |= BIGMAC_RXCFG_PMISC;
+		sbus_writel(tmp, bregs + BMAC_RXCFG);
+	} else {
+		u16 hash_table[4] = { 0 };
+
+		netdev_for_each_mc_addr(ha, dev) {
+			crc = ether_crc_le(6, ha->addr);
+			crc >>= 26;
+			hash_table[crc >> 4] |= 1 << (crc & 0xf);
+		}
+		sbus_writel(hash_table[0], bregs + BMAC_HTABLE0);
+		sbus_writel(hash_table[1], bregs + BMAC_HTABLE1);
+		sbus_writel(hash_table[2], bregs + BMAC_HTABLE2);
+		sbus_writel(hash_table[3], bregs + BMAC_HTABLE3);
+	}
+
+	/* Re-enable the receiver. */
+	tmp = sbus_readl(bregs + BMAC_RXCFG);
+	tmp |= BIGMAC_RXCFG_ENABLE;
+	sbus_writel(tmp, bregs + BMAC_RXCFG);
+}
+
+/* Ethtool support... */
+static void bigmac_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	strlcpy(info->driver, "sunbmac", sizeof(info->driver));
+	strlcpy(info->version, "2.0", sizeof(info->version));
+}
+
+static u32 bigmac_get_link(struct net_device *dev)
+{
+	struct bigmac *bp = netdev_priv(dev);
+
+	spin_lock_irq(&bp->lock);
+	bp->sw_bmsr = bigmac_tcvr_read(bp, bp->tregs, MII_BMSR);
+	spin_unlock_irq(&bp->lock);
+
+	return (bp->sw_bmsr & BMSR_LSTATUS);
+}
+
+static const struct ethtool_ops bigmac_ethtool_ops = {
+	.get_drvinfo		= bigmac_get_drvinfo,
+	.get_link		= bigmac_get_link,
+};
+
+static const struct net_device_ops bigmac_ops = {
+	.ndo_open		= bigmac_open,
+	.ndo_stop		= bigmac_close,
+	.ndo_start_xmit		= bigmac_start_xmit,
+	.ndo_get_stats		= bigmac_get_stats,
+	.ndo_set_rx_mode	= bigmac_set_multicast,
+	.ndo_tx_timeout		= bigmac_tx_timeout,
+	.ndo_set_mac_address	= eth_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+};
+
+static int bigmac_ether_init(struct platform_device *op,
+			     struct platform_device *qec_op)
+{
+	static int version_printed;
+	struct net_device *dev;
+	u8 bsizes, bsizes_more;
+	struct bigmac *bp;
+	int i;
+
+	/* Get a new device struct for this interface. */
+	dev = alloc_etherdev(sizeof(struct bigmac));
+	if (!dev)
+		return -ENOMEM;
+
+	if (version_printed++ == 0)
+		printk(KERN_INFO "%s", version);
+
+	for (i = 0; i < 6; i++)
+		dev->dev_addr[i] = idprom->id_ethaddr[i];
+
+	/* Setup softc, with backpointers to QEC and BigMAC SBUS device structs. */
+	bp = netdev_priv(dev);
+	bp->qec_op = qec_op;
+	bp->bigmac_op = op;
+
+	SET_NETDEV_DEV(dev, &op->dev);
+
+	spin_lock_init(&bp->lock);
+
+	/* Map in QEC global control registers. */
+	bp->gregs = of_ioremap(&qec_op->resource[0], 0,
+			       GLOB_REG_SIZE, "BigMAC QEC GLobal Regs");
+	if (!bp->gregs) {
+		printk(KERN_ERR "BIGMAC: Cannot map QEC global registers.\n");
+		goto fail_and_cleanup;
+	}
+
+	/* Make sure QEC is in BigMAC mode. */
+	if ((sbus_readl(bp->gregs + GLOB_CTRL) & 0xf0000000) != GLOB_CTRL_BMODE) {
+		printk(KERN_ERR "BigMAC: AIEEE, QEC is not in BigMAC mode!\n");
+		goto fail_and_cleanup;
+	}
+
+	/* Reset the QEC. */
+	if (qec_global_reset(bp->gregs))
+		goto fail_and_cleanup;
+
+	/* Get supported SBUS burst sizes. */
+	bsizes = of_getintprop_default(qec_op->dev.of_node, "burst-sizes", 0xff);
+	bsizes_more = of_getintprop_default(qec_op->dev.of_node, "burst-sizes", 0xff);
+
+	bsizes &= 0xff;
+	if (bsizes_more != 0xff)
+		bsizes &= bsizes_more;
+	if (bsizes == 0xff || (bsizes & DMA_BURST16) == 0 ||
+	    (bsizes & DMA_BURST32) == 0)
+		bsizes = (DMA_BURST32 - 1);
+	bp->bigmac_bursts = bsizes;
+
+	/* Perform QEC initialization. */
+	qec_init(bp);
+
+	/* Map in the BigMAC channel registers. */
+	bp->creg = of_ioremap(&op->resource[0], 0,
+			      CREG_REG_SIZE, "BigMAC QEC Channel Regs");
+	if (!bp->creg) {
+		printk(KERN_ERR "BIGMAC: Cannot map QEC channel registers.\n");
+		goto fail_and_cleanup;
+	}
+
+	/* Map in the BigMAC control registers. */
+	bp->bregs = of_ioremap(&op->resource[1], 0,
+			       BMAC_REG_SIZE, "BigMAC Primary Regs");
+	if (!bp->bregs) {
+		printk(KERN_ERR "BIGMAC: Cannot map BigMAC primary registers.\n");
+		goto fail_and_cleanup;
+	}
+
+	/* Map in the BigMAC transceiver registers, this is how you poke at
+	 * the BigMAC's PHY.
+	 */
+	bp->tregs = of_ioremap(&op->resource[2], 0,
+			       TCVR_REG_SIZE, "BigMAC Transceiver Regs");
+	if (!bp->tregs) {
+		printk(KERN_ERR "BIGMAC: Cannot map BigMAC transceiver registers.\n");
+		goto fail_and_cleanup;
+	}
+
+	/* Stop the BigMAC. */
+	bigmac_stop(bp);
+
+	/* Allocate transmit/receive descriptor DVMA block. */
+	bp->bmac_block = dma_alloc_coherent(&bp->bigmac_op->dev,
+					    PAGE_SIZE,
+					    &bp->bblock_dvma, GFP_ATOMIC);
+	if (bp->bmac_block == NULL || bp->bblock_dvma == 0)
+		goto fail_and_cleanup;
+
+	/* Get the board revision of this BigMAC. */
+	bp->board_rev = of_getintprop_default(bp->bigmac_op->dev.of_node,
+					      "board-version", 1);
+
+	/* Init auto-negotiation timer state. */
+	timer_setup(&bp->bigmac_timer, bigmac_timer, 0);
+	bp->timer_state = asleep;
+	bp->timer_ticks = 0;
+
+	/* Backlink to generic net device struct. */
+	bp->dev = dev;
+
+	/* Set links to our BigMAC open and close routines. */
+	dev->ethtool_ops = &bigmac_ethtool_ops;
+	dev->netdev_ops = &bigmac_ops;
+	dev->watchdog_timeo = 5*HZ;
+
+	/* Finish net device registration. */
+	dev->irq = bp->bigmac_op->archdata.irqs[0];
+	dev->dma = 0;
+
+	if (register_netdev(dev)) {
+		printk(KERN_ERR "BIGMAC: Cannot register device.\n");
+		goto fail_and_cleanup;
+	}
+
+	dev_set_drvdata(&bp->bigmac_op->dev, bp);
+
+	printk(KERN_INFO "%s: BigMAC 100baseT Ethernet %pM\n",
+	       dev->name, dev->dev_addr);
+
+	return 0;
+
+fail_and_cleanup:
+	/* Something went wrong, undo whatever we did so far. */
+	/* Free register mappings if any. */
+	if (bp->gregs)
+		of_iounmap(&qec_op->resource[0], bp->gregs, GLOB_REG_SIZE);
+	if (bp->creg)
+		of_iounmap(&op->resource[0], bp->creg, CREG_REG_SIZE);
+	if (bp->bregs)
+		of_iounmap(&op->resource[1], bp->bregs, BMAC_REG_SIZE);
+	if (bp->tregs)
+		of_iounmap(&op->resource[2], bp->tregs, TCVR_REG_SIZE);
+
+	if (bp->bmac_block)
+		dma_free_coherent(&bp->bigmac_op->dev,
+				  PAGE_SIZE,
+				  bp->bmac_block,
+				  bp->bblock_dvma);
+
+	/* This also frees the co-located private data */
+	free_netdev(dev);
+	return -ENODEV;
+}
+
+/* QEC can be the parent of either QuadEthernet or a BigMAC.  We want
+ * the latter.
+ */
+static int bigmac_sbus_probe(struct platform_device *op)
+{
+	struct device *parent = op->dev.parent;
+	struct platform_device *qec_op;
+
+	qec_op = to_platform_device(parent);
+
+	return bigmac_ether_init(op, qec_op);
+}
+
+static int bigmac_sbus_remove(struct platform_device *op)
+{
+	struct bigmac *bp = platform_get_drvdata(op);
+	struct device *parent = op->dev.parent;
+	struct net_device *net_dev = bp->dev;
+	struct platform_device *qec_op;
+
+	qec_op = to_platform_device(parent);
+
+	unregister_netdev(net_dev);
+
+	of_iounmap(&qec_op->resource[0], bp->gregs, GLOB_REG_SIZE);
+	of_iounmap(&op->resource[0], bp->creg, CREG_REG_SIZE);
+	of_iounmap(&op->resource[1], bp->bregs, BMAC_REG_SIZE);
+	of_iounmap(&op->resource[2], bp->tregs, TCVR_REG_SIZE);
+	dma_free_coherent(&op->dev,
+			  PAGE_SIZE,
+			  bp->bmac_block,
+			  bp->bblock_dvma);
+
+	free_netdev(net_dev);
+
+	return 0;
+}
+
+static const struct of_device_id bigmac_sbus_match[] = {
+	{
+		.name = "be",
+	},
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, bigmac_sbus_match);
+
+static struct platform_driver bigmac_sbus_driver = {
+	.driver = {
+		.name = "sunbmac",
+		.of_match_table = bigmac_sbus_match,
+	},
+	.probe		= bigmac_sbus_probe,
+	.remove		= bigmac_sbus_remove,
+};
+
+module_platform_driver(bigmac_sbus_driver);
diff --git a/drivers/net/ethernet/sun/sunbmac.h b/drivers/net/ethernet/sun/sunbmac.h
new file mode 100644
index 000000000..d379bd407
--- /dev/null
+++ b/drivers/net/ethernet/sun/sunbmac.h
@@ -0,0 +1,338 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* $Id: sunbmac.h,v 1.7 2000/07/11 22:35:22 davem Exp $
+ * sunbmac.h: Defines for the Sun "Big MAC" 100baseT ethernet cards.
+ *
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _SUNBMAC_H
+#define _SUNBMAC_H
+
+/* QEC global registers. */
+#define GLOB_CTRL	0x00UL	/* Control                  */
+#define GLOB_STAT	0x04UL	/* Status                   */
+#define GLOB_PSIZE	0x08UL	/* Packet Size              */
+#define GLOB_MSIZE	0x0cUL	/* Local-mem size (64K)     */
+#define GLOB_RSIZE	0x10UL	/* Receive partition size   */
+#define GLOB_TSIZE	0x14UL	/* Transmit partition size  */
+#define GLOB_REG_SIZE	0x18UL
+
+#define GLOB_CTRL_MMODE       0x40000000 /* MACE qec mode            */
+#define GLOB_CTRL_BMODE       0x10000000 /* BigMAC qec mode          */
+#define GLOB_CTRL_EPAR        0x00000020 /* Enable parity            */
+#define GLOB_CTRL_ACNTRL      0x00000018 /* SBUS arbitration control */
+#define GLOB_CTRL_B64         0x00000004 /* 64 byte dvma bursts      */
+#define GLOB_CTRL_B32         0x00000002 /* 32 byte dvma bursts      */
+#define GLOB_CTRL_B16         0x00000000 /* 16 byte dvma bursts      */
+#define GLOB_CTRL_RESET       0x00000001 /* Reset the QEC            */
+
+#define GLOB_STAT_TX          0x00000008 /* BigMAC Transmit IRQ      */
+#define GLOB_STAT_RX          0x00000004 /* BigMAC Receive IRQ       */
+#define GLOB_STAT_BM          0x00000002 /* BigMAC Global IRQ        */
+#define GLOB_STAT_ER          0x00000001 /* BigMAC Error IRQ         */
+
+#define GLOB_PSIZE_2048       0x00       /* 2k packet size           */
+#define GLOB_PSIZE_4096       0x01       /* 4k packet size           */
+#define GLOB_PSIZE_6144       0x10       /* 6k packet size           */
+#define GLOB_PSIZE_8192       0x11       /* 8k packet size           */
+
+/* QEC BigMAC channel registers. */
+#define CREG_CTRL	0x00UL	/* Control                   */
+#define CREG_STAT	0x04UL	/* Status                    */
+#define CREG_RXDS	0x08UL	/* RX descriptor ring ptr    */
+#define CREG_TXDS	0x0cUL	/* TX descriptor ring ptr    */
+#define CREG_RIMASK	0x10UL	/* RX Interrupt Mask         */
+#define CREG_TIMASK	0x14UL	/* TX Interrupt Mask         */
+#define CREG_QMASK	0x18UL	/* QEC Error Interrupt Mask  */
+#define CREG_BMASK	0x1cUL	/* BigMAC Error Interrupt Mask*/
+#define CREG_RXWBUFPTR	0x20UL	/* Local memory rx write ptr */
+#define CREG_RXRBUFPTR	0x24UL	/* Local memory rx read ptr  */
+#define CREG_TXWBUFPTR	0x28UL	/* Local memory tx write ptr */
+#define CREG_TXRBUFPTR	0x2cUL	/* Local memory tx read ptr  */
+#define CREG_CCNT	0x30UL	/* Collision Counter         */
+#define CREG_REG_SIZE	0x34UL
+
+#define CREG_CTRL_TWAKEUP     0x00000001  /* Transmitter Wakeup, 'go'. */
+
+#define CREG_STAT_BERROR      0x80000000  /* BigMAC error              */
+#define CREG_STAT_TXIRQ       0x00200000  /* Transmit Interrupt        */
+#define CREG_STAT_TXDERROR    0x00080000  /* TX Descriptor is bogus    */
+#define CREG_STAT_TXLERR      0x00040000  /* Late Transmit Error       */
+#define CREG_STAT_TXPERR      0x00020000  /* Transmit Parity Error     */
+#define CREG_STAT_TXSERR      0x00010000  /* Transmit SBUS error ack   */
+#define CREG_STAT_RXIRQ       0x00000020  /* Receive Interrupt         */
+#define CREG_STAT_RXDROP      0x00000010  /* Dropped a RX'd packet     */
+#define CREG_STAT_RXSMALL     0x00000008  /* Receive buffer too small  */
+#define CREG_STAT_RXLERR      0x00000004  /* Receive Late Error        */
+#define CREG_STAT_RXPERR      0x00000002  /* Receive Parity Error      */
+#define CREG_STAT_RXSERR      0x00000001  /* Receive SBUS Error ACK    */
+
+#define CREG_STAT_ERRORS      (CREG_STAT_BERROR|CREG_STAT_TXDERROR|CREG_STAT_TXLERR|   \
+                               CREG_STAT_TXPERR|CREG_STAT_TXSERR|CREG_STAT_RXDROP|     \
+                               CREG_STAT_RXSMALL|CREG_STAT_RXLERR|CREG_STAT_RXPERR|    \
+                               CREG_STAT_RXSERR)
+
+#define CREG_QMASK_TXDERROR   0x00080000  /* TXD error                 */
+#define CREG_QMASK_TXLERR     0x00040000  /* TX late error             */
+#define CREG_QMASK_TXPERR     0x00020000  /* TX parity error           */
+#define CREG_QMASK_TXSERR     0x00010000  /* TX sbus error ack         */
+#define CREG_QMASK_RXDROP     0x00000010  /* RX drop                   */
+#define CREG_QMASK_RXBERROR   0x00000008  /* RX buffer error           */
+#define CREG_QMASK_RXLEERR    0x00000004  /* RX late error             */
+#define CREG_QMASK_RXPERR     0x00000002  /* RX parity error           */
+#define CREG_QMASK_RXSERR     0x00000001  /* RX sbus error ack         */
+
+/* BIGMAC core registers */
+#define BMAC_XIFCFG	0x000UL	/* XIF config register                */
+	/* 0x004-->0x0fc, reserved */
+#define BMAC_STATUS	0x100UL	/* Status register, clear on read     */
+#define BMAC_IMASK	0x104UL	/* Interrupt mask register            */
+	/* 0x108-->0x204, reserved */
+#define BMAC_TXSWRESET	0x208UL	/* Transmitter software reset         */
+#define BMAC_TXCFG	0x20cUL	/* Transmitter config register        */
+#define BMAC_IGAP1	0x210UL	/* Inter-packet gap 1                 */
+#define BMAC_IGAP2	0x214UL	/* Inter-packet gap 2                 */
+#define BMAC_ALIMIT	0x218UL	/* Transmit attempt limit             */
+#define BMAC_STIME	0x21cUL	/* Transmit slot time                 */
+#define BMAC_PLEN	0x220UL	/* Size of transmit preamble          */
+#define BMAC_PPAT	0x224UL	/* Pattern for transmit preamble      */
+#define BMAC_TXDELIM	0x228UL	/* Transmit delimiter                 */
+#define BMAC_JSIZE	0x22cUL	/* Toe jam...                         */
+#define BMAC_TXPMAX	0x230UL	/* Transmit max pkt size              */
+#define BMAC_TXPMIN	0x234UL	/* Transmit min pkt size              */
+#define BMAC_PATTEMPT	0x238UL	/* Count of transmit peak attempts    */
+#define BMAC_DTCTR	0x23cUL	/* Transmit defer timer               */
+#define BMAC_NCCTR	0x240UL	/* Transmit normal-collision counter  */
+#define BMAC_FCCTR	0x244UL	/* Transmit first-collision counter   */
+#define BMAC_EXCTR	0x248UL	/* Transmit excess-collision counter  */
+#define BMAC_LTCTR	0x24cUL	/* Transmit late-collision counter    */
+#define BMAC_RSEED	0x250UL	/* Transmit random number seed        */
+#define BMAC_TXSMACHINE	0x254UL /* Transmit state machine             */
+	/* 0x258-->0x304, reserved */
+#define BMAC_RXSWRESET	0x308UL	/* Receiver software reset            */
+#define BMAC_RXCFG	0x30cUL	/* Receiver config register           */
+#define BMAC_RXPMAX	0x310UL	/* Receive max pkt size               */
+#define BMAC_RXPMIN	0x314UL	/* Receive min pkt size               */
+#define BMAC_MACADDR2	0x318UL	/* Ether address register 2           */
+#define BMAC_MACADDR1	0x31cUL	/* Ether address register 1           */
+#define BMAC_MACADDR0	0x320UL	/* Ether address register 0           */
+#define BMAC_FRCTR	0x324UL	/* Receive frame receive counter      */
+#define BMAC_GLECTR	0x328UL	/* Receive giant-length error counter */
+#define BMAC_UNALECTR	0x32cUL	/* Receive unaligned error counter    */
+#define BMAC_RCRCECTR	0x330UL	/* Receive CRC error counter          */
+#define BMAC_RXSMACHINE	0x334UL	/* Receiver state machine             */
+#define BMAC_RXCVALID	0x338UL	/* Receiver code violation            */
+	/* 0x33c, reserved */
+#define BMAC_HTABLE3	0x340UL	/* Hash table 3                       */
+#define BMAC_HTABLE2	0x344UL	/* Hash table 2                       */
+#define BMAC_HTABLE1	0x348UL	/* Hash table 1                       */
+#define BMAC_HTABLE0	0x34cUL	/* Hash table 0                       */
+#define BMAC_AFILTER2	0x350UL	/* Address filter 2                   */
+#define BMAC_AFILTER1	0x354UL	/* Address filter 1                   */
+#define BMAC_AFILTER0	0x358UL	/* Address filter 0                   */
+#define BMAC_AFMASK	0x35cUL	/* Address filter mask                */
+#define BMAC_REG_SIZE	0x360UL
+
+/* BigMac XIF config register. */
+#define BIGMAC_XCFG_ODENABLE   0x00000001 /* Output driver enable                     */
+#define BIGMAC_XCFG_RESV       0x00000002 /* Reserved, write always as 1              */
+#define BIGMAC_XCFG_MLBACK     0x00000004 /* Loopback-mode MII enable                 */
+#define BIGMAC_XCFG_SMODE      0x00000008 /* Enable serial mode                       */
+
+/* BigMAC status register. */
+#define BIGMAC_STAT_GOTFRAME   0x00000001 /* Received a frame                         */
+#define BIGMAC_STAT_RCNTEXP    0x00000002 /* Receive frame counter expired            */
+#define BIGMAC_STAT_ACNTEXP    0x00000004 /* Align-error counter expired              */
+#define BIGMAC_STAT_CCNTEXP    0x00000008 /* CRC-error counter expired                */
+#define BIGMAC_STAT_LCNTEXP    0x00000010 /* Length-error counter expired             */
+#define BIGMAC_STAT_RFIFOVF    0x00000020 /* Receive FIFO overflow                    */
+#define BIGMAC_STAT_CVCNTEXP   0x00000040 /* Code-violation counter expired           */
+#define BIGMAC_STAT_SENTFRAME  0x00000100 /* Transmitted a frame                      */
+#define BIGMAC_STAT_TFIFO_UND  0x00000200 /* Transmit FIFO underrun                   */
+#define BIGMAC_STAT_MAXPKTERR  0x00000400 /* Max-packet size error                    */
+#define BIGMAC_STAT_NCNTEXP    0x00000800 /* Normal-collision counter expired         */
+#define BIGMAC_STAT_ECNTEXP    0x00001000 /* Excess-collision counter expired         */
+#define BIGMAC_STAT_LCCNTEXP   0x00002000 /* Late-collision counter expired           */
+#define BIGMAC_STAT_FCNTEXP    0x00004000 /* First-collision counter expired          */
+#define BIGMAC_STAT_DTIMEXP    0x00008000 /* Defer-timer expired                      */
+
+/* BigMAC interrupt mask register. */
+#define BIGMAC_IMASK_GOTFRAME  0x00000001 /* Received a frame                         */
+#define BIGMAC_IMASK_RCNTEXP   0x00000002 /* Receive frame counter expired            */
+#define BIGMAC_IMASK_ACNTEXP   0x00000004 /* Align-error counter expired              */
+#define BIGMAC_IMASK_CCNTEXP   0x00000008 /* CRC-error counter expired                */
+#define BIGMAC_IMASK_LCNTEXP   0x00000010 /* Length-error counter expired             */
+#define BIGMAC_IMASK_RFIFOVF   0x00000020 /* Receive FIFO overflow                    */
+#define BIGMAC_IMASK_CVCNTEXP  0x00000040 /* Code-violation counter expired           */
+#define BIGMAC_IMASK_SENTFRAME 0x00000100 /* Transmitted a frame                      */
+#define BIGMAC_IMASK_TFIFO_UND 0x00000200 /* Transmit FIFO underrun                   */
+#define BIGMAC_IMASK_MAXPKTERR 0x00000400 /* Max-packet size error                    */
+#define BIGMAC_IMASK_NCNTEXP   0x00000800 /* Normal-collision counter expired         */
+#define BIGMAC_IMASK_ECNTEXP   0x00001000 /* Excess-collision counter expired         */
+#define BIGMAC_IMASK_LCCNTEXP  0x00002000 /* Late-collision counter expired           */
+#define BIGMAC_IMASK_FCNTEXP   0x00004000 /* First-collision counter expired          */
+#define BIGMAC_IMASK_DTIMEXP   0x00008000 /* Defer-timer expired                      */
+
+/* BigMac transmit config register. */
+#define BIGMAC_TXCFG_ENABLE    0x00000001 /* Enable the transmitter                   */
+#define BIGMAC_TXCFG_FIFO      0x00000010 /* Default tx fthresh...                    */
+#define BIGMAC_TXCFG_SMODE     0x00000020 /* Enable slow transmit mode                */
+#define BIGMAC_TXCFG_CIGN      0x00000040 /* Ignore transmit collisions               */
+#define BIGMAC_TXCFG_FCSOFF    0x00000080 /* Do not emit FCS                          */
+#define BIGMAC_TXCFG_DBACKOFF  0x00000100 /* Disable backoff                          */
+#define BIGMAC_TXCFG_FULLDPLX  0x00000200 /* Enable full-duplex                       */
+
+/* BigMac receive config register. */
+#define BIGMAC_RXCFG_ENABLE    0x00000001 /* Enable the receiver                      */
+#define BIGMAC_RXCFG_FIFO      0x0000000e /* Default rx fthresh...                    */
+#define BIGMAC_RXCFG_PSTRIP    0x00000020 /* Pad byte strip enable                    */
+#define BIGMAC_RXCFG_PMISC     0x00000040 /* Enable promiscuous mode                   */
+#define BIGMAC_RXCFG_DERR      0x00000080 /* Disable error checking                   */
+#define BIGMAC_RXCFG_DCRCS     0x00000100 /* Disable CRC stripping                    */
+#define BIGMAC_RXCFG_ME        0x00000200 /* Receive packets addressed to me          */
+#define BIGMAC_RXCFG_PGRP      0x00000400 /* Enable promisc group mode                */
+#define BIGMAC_RXCFG_HENABLE   0x00000800 /* Enable the hash filter                   */
+#define BIGMAC_RXCFG_AENABLE   0x00001000 /* Enable the address filter                */
+
+/* The BigMAC PHY transceiver.  Not nearly as sophisticated as the happy meal
+ * one.  But it does have the "bit banger", oh baby.
+ */
+#define TCVR_TPAL	0x00UL
+#define TCVR_MPAL	0x04UL
+#define TCVR_REG_SIZE	0x08UL
+
+/* Frame commands. */
+#define FRAME_WRITE           0x50020000
+#define FRAME_READ            0x60020000
+
+/* Tranceiver registers. */
+#define TCVR_PAL_SERIAL       0x00000001 /* Enable serial mode              */
+#define TCVR_PAL_EXTLBACK     0x00000002 /* Enable external loopback        */
+#define TCVR_PAL_MSENSE       0x00000004 /* Media sense                     */
+#define TCVR_PAL_LTENABLE     0x00000008 /* Link test enable                */
+#define TCVR_PAL_LTSTATUS     0x00000010 /* Link test status  (P1 only)     */
+
+/* Management PAL. */
+#define MGMT_PAL_DCLOCK       0x00000001 /* Data clock                      */
+#define MGMT_PAL_OENAB        0x00000002 /* Output enabler                  */
+#define MGMT_PAL_MDIO         0x00000004 /* MDIO Data/attached              */
+#define MGMT_PAL_TIMEO        0x00000008 /* Transmit enable timeout error   */
+#define MGMT_PAL_EXT_MDIO     MGMT_PAL_MDIO
+#define MGMT_PAL_INT_MDIO     MGMT_PAL_TIMEO
+
+/* Here are some PHY addresses. */
+#define BIGMAC_PHY_EXTERNAL   0 /* External transceiver */
+#define BIGMAC_PHY_INTERNAL   1 /* Internal transceiver */
+
+/* Ring descriptors and such, same as Quad Ethernet. */
+struct be_rxd {
+	u32 rx_flags;
+	u32 rx_addr;
+};
+
+#define RXD_OWN      0x80000000 /* Ownership.      */
+#define RXD_UPDATE   0x10000000 /* Being Updated?  */
+#define RXD_LENGTH   0x000007ff /* Packet Length.  */
+
+struct be_txd {
+	u32 tx_flags;
+	u32 tx_addr;
+};
+
+#define TXD_OWN      0x80000000 /* Ownership.      */
+#define TXD_SOP      0x40000000 /* Start Of Packet */
+#define TXD_EOP      0x20000000 /* End Of Packet   */
+#define TXD_UPDATE   0x10000000 /* Being Updated?  */
+#define TXD_LENGTH   0x000007ff /* Packet Length.  */
+
+#define TX_RING_MAXSIZE   256
+#define RX_RING_MAXSIZE   256
+
+#define TX_RING_SIZE      256
+#define RX_RING_SIZE      256
+
+#define NEXT_RX(num)       (((num) + 1) & (RX_RING_SIZE - 1))
+#define NEXT_TX(num)       (((num) + 1) & (TX_RING_SIZE - 1))
+#define PREV_RX(num)       (((num) - 1) & (RX_RING_SIZE - 1))
+#define PREV_TX(num)       (((num) - 1) & (TX_RING_SIZE - 1))
+
+#define TX_BUFFS_AVAIL(bp)                                    \
+        (((bp)->tx_old <= (bp)->tx_new) ?                     \
+	  (bp)->tx_old + (TX_RING_SIZE - 1) - (bp)->tx_new :  \
+			    (bp)->tx_old - (bp)->tx_new - 1)
+
+
+#define RX_COPY_THRESHOLD  256
+#define RX_BUF_ALLOC_SIZE  (ETH_FRAME_LEN + (64 * 3))
+
+struct bmac_init_block {
+	struct be_rxd be_rxd[RX_RING_MAXSIZE];
+	struct be_txd be_txd[TX_RING_MAXSIZE];
+};
+
+#define bib_offset(mem, elem) \
+((__u32)((unsigned long)(&(((struct bmac_init_block *)0)->mem[elem]))))
+
+/* Now software state stuff. */
+enum bigmac_transceiver {
+	external = 0,
+	internal = 1,
+	none     = 2,
+};
+
+/* Timer state engine. */
+enum bigmac_timer_state {
+	ltrywait = 1,  /* Forcing try of all modes, from fastest to slowest. */
+	asleep   = 2,  /* Timer inactive.                                    */
+};
+
+struct bigmac {
+	void __iomem	*gregs;	/* QEC Global Registers               */
+	void __iomem	*creg;	/* QEC BigMAC Channel Registers       */
+	void __iomem	*bregs;	/* BigMAC Registers                   */
+	void __iomem	*tregs;	/* BigMAC Transceiver                 */
+	struct bmac_init_block	*bmac_block;	/* RX and TX descriptors */
+	dma_addr_t		bblock_dvma;	/* RX and TX descriptors */
+
+	spinlock_t		lock;
+
+	struct sk_buff		*rx_skbs[RX_RING_SIZE];
+	struct sk_buff		*tx_skbs[TX_RING_SIZE];
+
+	int rx_new, tx_new, rx_old, tx_old;
+
+	int board_rev;				/* BigMAC board revision.             */
+
+	enum bigmac_transceiver	tcvr_type;
+	unsigned int		bigmac_bursts;
+	unsigned int		paddr;
+	unsigned short		sw_bmsr;         /* SW copy of PHY BMSR               */
+	unsigned short		sw_bmcr;         /* SW copy of PHY BMCR               */
+	struct timer_list	bigmac_timer;
+	enum bigmac_timer_state	timer_state;
+	unsigned int		timer_ticks;
+
+	struct platform_device	*qec_op;
+	struct platform_device	*bigmac_op;
+	struct net_device	*dev;
+};
+
+/* We use this to acquire receive skb's that we can DMA directly into. */
+#define ALIGNED_RX_SKB_ADDR(addr) \
+        ((((unsigned long)(addr) + (64 - 1)) & ~(64 - 1)) - (unsigned long)(addr))
+
+static inline struct sk_buff *big_mac_alloc_skb(unsigned int length, gfp_t gfp_flags)
+{
+	struct sk_buff *skb;
+
+	skb = alloc_skb(length + 64, gfp_flags);
+	if(skb) {
+		int offset = ALIGNED_RX_SKB_ADDR(skb->data);
+
+		if(offset)
+			skb_reserve(skb, offset);
+	}
+	return skb;
+}
+
+#endif /* !(_SUNBMAC_H) */
diff --git a/drivers/net/ethernet/sun/sungem.c b/drivers/net/ethernet/sun/sungem.c
new file mode 100644
index 000000000..b9221fc16
--- /dev/null
+++ b/drivers/net/ethernet/sun/sungem.c
@@ -0,0 +1,3046 @@
+// SPDX-License-Identifier: GPL-2.0
+/* $Id: sungem.c,v 1.44.2.22 2002/03/13 01:18:12 davem Exp $
+ * sungem.c: Sun GEM ethernet driver.
+ *
+ * Copyright (C) 2000, 2001, 2002, 2003 David S. Miller (davem@redhat.com)
+ *
+ * Support for Apple GMAC and assorted PHYs, WOL, Power Management
+ * (C) 2001,2002,2003 Benjamin Herrenscmidt (benh@kernel.crashing.org)
+ * (C) 2004,2005 Benjamin Herrenscmidt, IBM Corp.
+ *
+ * NAPI and NETPOLL support
+ * (C) 2004 by Eric Lemoine (eric.lemoine@gmail.com)
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/crc32.h>
+#include <linux/random.h>
+#include <linux/workqueue.h>
+#include <linux/if_vlan.h>
+#include <linux/bitops.h>
+#include <linux/mm.h>
+#include <linux/gfp.h>
+
+#include <asm/io.h>
+#include <asm/byteorder.h>
+#include <linux/uaccess.h>
+#include <asm/irq.h>
+
+#ifdef CONFIG_SPARC
+#include <asm/idprom.h>
+#include <asm/prom.h>
+#endif
+
+#ifdef CONFIG_PPC_PMAC
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/pmac_feature.h>
+#endif
+
+#include <linux/sungem_phy.h>
+#include "sungem.h"
+
+#define STRIP_FCS
+
+#define DEFAULT_MSG	(NETIF_MSG_DRV		| \
+			 NETIF_MSG_PROBE	| \
+			 NETIF_MSG_LINK)
+
+#define ADVERTISE_MASK	(SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | \
+			 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | \
+			 SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full | \
+			 SUPPORTED_Pause | SUPPORTED_Autoneg)
+
+#define DRV_NAME	"sungem"
+#define DRV_VERSION	"1.0"
+#define DRV_AUTHOR	"David S. Miller <davem@redhat.com>"
+
+static char version[] =
+        DRV_NAME ".c:v" DRV_VERSION " " DRV_AUTHOR "\n";
+
+MODULE_AUTHOR(DRV_AUTHOR);
+MODULE_DESCRIPTION("Sun GEM Gbit ethernet driver");
+MODULE_LICENSE("GPL");
+
+#define GEM_MODULE_NAME	"gem"
+
+static const struct pci_device_id gem_pci_tbl[] = {
+	{ PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_GEM,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+
+	/* These models only differ from the original GEM in
+	 * that their tx/rx fifos are of a different size and
+	 * they only support 10/100 speeds. -DaveM
+	 *
+	 * Apple's GMAC does support gigabit on machines with
+	 * the BCM54xx PHYs. -BenH
+	 */
+	{ PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_RIO_GEM,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMAC,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMACP,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_GMAC2,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_K2_GMAC,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_SH_SUNGEM,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_IPID2_GMAC,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{0, }
+};
+
+MODULE_DEVICE_TABLE(pci, gem_pci_tbl);
+
+static u16 __sungem_phy_read(struct gem *gp, int phy_addr, int reg)
+{
+	u32 cmd;
+	int limit = 10000;
+
+	cmd  = (1 << 30);
+	cmd |= (2 << 28);
+	cmd |= (phy_addr << 23) & MIF_FRAME_PHYAD;
+	cmd |= (reg << 18) & MIF_FRAME_REGAD;
+	cmd |= (MIF_FRAME_TAMSB);
+	writel(cmd, gp->regs + MIF_FRAME);
+
+	while (--limit) {
+		cmd = readl(gp->regs + MIF_FRAME);
+		if (cmd & MIF_FRAME_TALSB)
+			break;
+
+		udelay(10);
+	}
+
+	if (!limit)
+		cmd = 0xffff;
+
+	return cmd & MIF_FRAME_DATA;
+}
+
+static inline int _sungem_phy_read(struct net_device *dev, int mii_id, int reg)
+{
+	struct gem *gp = netdev_priv(dev);
+	return __sungem_phy_read(gp, mii_id, reg);
+}
+
+static inline u16 sungem_phy_read(struct gem *gp, int reg)
+{
+	return __sungem_phy_read(gp, gp->mii_phy_addr, reg);
+}
+
+static void __sungem_phy_write(struct gem *gp, int phy_addr, int reg, u16 val)
+{
+	u32 cmd;
+	int limit = 10000;
+
+	cmd  = (1 << 30);
+	cmd |= (1 << 28);
+	cmd |= (phy_addr << 23) & MIF_FRAME_PHYAD;
+	cmd |= (reg << 18) & MIF_FRAME_REGAD;
+	cmd |= (MIF_FRAME_TAMSB);
+	cmd |= (val & MIF_FRAME_DATA);
+	writel(cmd, gp->regs + MIF_FRAME);
+
+	while (limit--) {
+		cmd = readl(gp->regs + MIF_FRAME);
+		if (cmd & MIF_FRAME_TALSB)
+			break;
+
+		udelay(10);
+	}
+}
+
+static inline void _sungem_phy_write(struct net_device *dev, int mii_id, int reg, int val)
+{
+	struct gem *gp = netdev_priv(dev);
+	__sungem_phy_write(gp, mii_id, reg, val & 0xffff);
+}
+
+static inline void sungem_phy_write(struct gem *gp, int reg, u16 val)
+{
+	__sungem_phy_write(gp, gp->mii_phy_addr, reg, val);
+}
+
+static inline void gem_enable_ints(struct gem *gp)
+{
+	/* Enable all interrupts but TXDONE */
+	writel(GREG_STAT_TXDONE, gp->regs + GREG_IMASK);
+}
+
+static inline void gem_disable_ints(struct gem *gp)
+{
+	/* Disable all interrupts, including TXDONE */
+	writel(GREG_STAT_NAPI | GREG_STAT_TXDONE, gp->regs + GREG_IMASK);
+	(void)readl(gp->regs + GREG_IMASK); /* write posting */
+}
+
+static void gem_get_cell(struct gem *gp)
+{
+	BUG_ON(gp->cell_enabled < 0);
+	gp->cell_enabled++;
+#ifdef CONFIG_PPC_PMAC
+	if (gp->cell_enabled == 1) {
+		mb();
+		pmac_call_feature(PMAC_FTR_GMAC_ENABLE, gp->of_node, 0, 1);
+		udelay(10);
+	}
+#endif /* CONFIG_PPC_PMAC */
+}
+
+/* Turn off the chip's clock */
+static void gem_put_cell(struct gem *gp)
+{
+	BUG_ON(gp->cell_enabled <= 0);
+	gp->cell_enabled--;
+#ifdef CONFIG_PPC_PMAC
+	if (gp->cell_enabled == 0) {
+		mb();
+		pmac_call_feature(PMAC_FTR_GMAC_ENABLE, gp->of_node, 0, 0);
+		udelay(10);
+	}
+#endif /* CONFIG_PPC_PMAC */
+}
+
+static inline void gem_netif_stop(struct gem *gp)
+{
+	netif_trans_update(gp->dev);	/* prevent tx timeout */
+	napi_disable(&gp->napi);
+	netif_tx_disable(gp->dev);
+}
+
+static inline void gem_netif_start(struct gem *gp)
+{
+	/* NOTE: unconditional netif_wake_queue is only
+	 * appropriate so long as all callers are assured to
+	 * have free tx slots.
+	 */
+	netif_wake_queue(gp->dev);
+	napi_enable(&gp->napi);
+}
+
+static void gem_schedule_reset(struct gem *gp)
+{
+	gp->reset_task_pending = 1;
+	schedule_work(&gp->reset_task);
+}
+
+static void gem_handle_mif_event(struct gem *gp, u32 reg_val, u32 changed_bits)
+{
+	if (netif_msg_intr(gp))
+		printk(KERN_DEBUG "%s: mif interrupt\n", gp->dev->name);
+}
+
+static int gem_pcs_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
+{
+	u32 pcs_istat = readl(gp->regs + PCS_ISTAT);
+	u32 pcs_miistat;
+
+	if (netif_msg_intr(gp))
+		printk(KERN_DEBUG "%s: pcs interrupt, pcs_istat: 0x%x\n",
+			gp->dev->name, pcs_istat);
+
+	if (!(pcs_istat & PCS_ISTAT_LSC)) {
+		netdev_err(dev, "PCS irq but no link status change???\n");
+		return 0;
+	}
+
+	/* The link status bit latches on zero, so you must
+	 * read it twice in such a case to see a transition
+	 * to the link being up.
+	 */
+	pcs_miistat = readl(gp->regs + PCS_MIISTAT);
+	if (!(pcs_miistat & PCS_MIISTAT_LS))
+		pcs_miistat |=
+			(readl(gp->regs + PCS_MIISTAT) &
+			 PCS_MIISTAT_LS);
+
+	if (pcs_miistat & PCS_MIISTAT_ANC) {
+		/* The remote-fault indication is only valid
+		 * when autoneg has completed.
+		 */
+		if (pcs_miistat & PCS_MIISTAT_RF)
+			netdev_info(dev, "PCS AutoNEG complete, RemoteFault\n");
+		else
+			netdev_info(dev, "PCS AutoNEG complete\n");
+	}
+
+	if (pcs_miistat & PCS_MIISTAT_LS) {
+		netdev_info(dev, "PCS link is now up\n");
+		netif_carrier_on(gp->dev);
+	} else {
+		netdev_info(dev, "PCS link is now down\n");
+		netif_carrier_off(gp->dev);
+		/* If this happens and the link timer is not running,
+		 * reset so we re-negotiate.
+		 */
+		if (!timer_pending(&gp->link_timer))
+			return 1;
+	}
+
+	return 0;
+}
+
+static int gem_txmac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
+{
+	u32 txmac_stat = readl(gp->regs + MAC_TXSTAT);
+
+	if (netif_msg_intr(gp))
+		printk(KERN_DEBUG "%s: txmac interrupt, txmac_stat: 0x%x\n",
+			gp->dev->name, txmac_stat);
+
+	/* Defer timer expiration is quite normal,
+	 * don't even log the event.
+	 */
+	if ((txmac_stat & MAC_TXSTAT_DTE) &&
+	    !(txmac_stat & ~MAC_TXSTAT_DTE))
+		return 0;
+
+	if (txmac_stat & MAC_TXSTAT_URUN) {
+		netdev_err(dev, "TX MAC xmit underrun\n");
+		dev->stats.tx_fifo_errors++;
+	}
+
+	if (txmac_stat & MAC_TXSTAT_MPE) {
+		netdev_err(dev, "TX MAC max packet size error\n");
+		dev->stats.tx_errors++;
+	}
+
+	/* The rest are all cases of one of the 16-bit TX
+	 * counters expiring.
+	 */
+	if (txmac_stat & MAC_TXSTAT_NCE)
+		dev->stats.collisions += 0x10000;
+
+	if (txmac_stat & MAC_TXSTAT_ECE) {
+		dev->stats.tx_aborted_errors += 0x10000;
+		dev->stats.collisions += 0x10000;
+	}
+
+	if (txmac_stat & MAC_TXSTAT_LCE) {
+		dev->stats.tx_aborted_errors += 0x10000;
+		dev->stats.collisions += 0x10000;
+	}
+
+	/* We do not keep track of MAC_TXSTAT_FCE and
+	 * MAC_TXSTAT_PCE events.
+	 */
+	return 0;
+}
+
+/* When we get a RX fifo overflow, the RX unit in GEM is probably hung
+ * so we do the following.
+ *
+ * If any part of the reset goes wrong, we return 1 and that causes the
+ * whole chip to be reset.
+ */
+static int gem_rxmac_reset(struct gem *gp)
+{
+	struct net_device *dev = gp->dev;
+	int limit, i;
+	u64 desc_dma;
+	u32 val;
+
+	/* First, reset & disable MAC RX. */
+	writel(MAC_RXRST_CMD, gp->regs + MAC_RXRST);
+	for (limit = 0; limit < 5000; limit++) {
+		if (!(readl(gp->regs + MAC_RXRST) & MAC_RXRST_CMD))
+			break;
+		udelay(10);
+	}
+	if (limit == 5000) {
+		netdev_err(dev, "RX MAC will not reset, resetting whole chip\n");
+		return 1;
+	}
+
+	writel(gp->mac_rx_cfg & ~MAC_RXCFG_ENAB,
+	       gp->regs + MAC_RXCFG);
+	for (limit = 0; limit < 5000; limit++) {
+		if (!(readl(gp->regs + MAC_RXCFG) & MAC_RXCFG_ENAB))
+			break;
+		udelay(10);
+	}
+	if (limit == 5000) {
+		netdev_err(dev, "RX MAC will not disable, resetting whole chip\n");
+		return 1;
+	}
+
+	/* Second, disable RX DMA. */
+	writel(0, gp->regs + RXDMA_CFG);
+	for (limit = 0; limit < 5000; limit++) {
+		if (!(readl(gp->regs + RXDMA_CFG) & RXDMA_CFG_ENABLE))
+			break;
+		udelay(10);
+	}
+	if (limit == 5000) {
+		netdev_err(dev, "RX DMA will not disable, resetting whole chip\n");
+		return 1;
+	}
+
+	mdelay(5);
+
+	/* Execute RX reset command. */
+	writel(gp->swrst_base | GREG_SWRST_RXRST,
+	       gp->regs + GREG_SWRST);
+	for (limit = 0; limit < 5000; limit++) {
+		if (!(readl(gp->regs + GREG_SWRST) & GREG_SWRST_RXRST))
+			break;
+		udelay(10);
+	}
+	if (limit == 5000) {
+		netdev_err(dev, "RX reset command will not execute, resetting whole chip\n");
+		return 1;
+	}
+
+	/* Refresh the RX ring. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		struct gem_rxd *rxd = &gp->init_block->rxd[i];
+
+		if (gp->rx_skbs[i] == NULL) {
+			netdev_err(dev, "Parts of RX ring empty, resetting whole chip\n");
+			return 1;
+		}
+
+		rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
+	}
+	gp->rx_new = gp->rx_old = 0;
+
+	/* Now we must reprogram the rest of RX unit. */
+	desc_dma = (u64) gp->gblock_dvma;
+	desc_dma += (INIT_BLOCK_TX_RING_SIZE * sizeof(struct gem_txd));
+	writel(desc_dma >> 32, gp->regs + RXDMA_DBHI);
+	writel(desc_dma & 0xffffffff, gp->regs + RXDMA_DBLOW);
+	writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
+	val = (RXDMA_CFG_BASE | (RX_OFFSET << 10) |
+	       (ETH_HLEN << 13) | RXDMA_CFG_FTHRESH_128);
+	writel(val, gp->regs + RXDMA_CFG);
+	if (readl(gp->regs + GREG_BIFCFG) & GREG_BIFCFG_M66EN)
+		writel(((5 & RXDMA_BLANK_IPKTS) |
+			((8 << 12) & RXDMA_BLANK_ITIME)),
+		       gp->regs + RXDMA_BLANK);
+	else
+		writel(((5 & RXDMA_BLANK_IPKTS) |
+			((4 << 12) & RXDMA_BLANK_ITIME)),
+		       gp->regs + RXDMA_BLANK);
+	val  = (((gp->rx_pause_off / 64) << 0) & RXDMA_PTHRESH_OFF);
+	val |= (((gp->rx_pause_on / 64) << 12) & RXDMA_PTHRESH_ON);
+	writel(val, gp->regs + RXDMA_PTHRESH);
+	val = readl(gp->regs + RXDMA_CFG);
+	writel(val | RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
+	writel(MAC_RXSTAT_RCV, gp->regs + MAC_RXMASK);
+	val = readl(gp->regs + MAC_RXCFG);
+	writel(val | MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
+
+	return 0;
+}
+
+static int gem_rxmac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
+{
+	u32 rxmac_stat = readl(gp->regs + MAC_RXSTAT);
+	int ret = 0;
+
+	if (netif_msg_intr(gp))
+		printk(KERN_DEBUG "%s: rxmac interrupt, rxmac_stat: 0x%x\n",
+			gp->dev->name, rxmac_stat);
+
+	if (rxmac_stat & MAC_RXSTAT_OFLW) {
+		u32 smac = readl(gp->regs + MAC_SMACHINE);
+
+		netdev_err(dev, "RX MAC fifo overflow smac[%08x]\n", smac);
+		dev->stats.rx_over_errors++;
+		dev->stats.rx_fifo_errors++;
+
+		ret = gem_rxmac_reset(gp);
+	}
+
+	if (rxmac_stat & MAC_RXSTAT_ACE)
+		dev->stats.rx_frame_errors += 0x10000;
+
+	if (rxmac_stat & MAC_RXSTAT_CCE)
+		dev->stats.rx_crc_errors += 0x10000;
+
+	if (rxmac_stat & MAC_RXSTAT_LCE)
+		dev->stats.rx_length_errors += 0x10000;
+
+	/* We do not track MAC_RXSTAT_FCE and MAC_RXSTAT_VCE
+	 * events.
+	 */
+	return ret;
+}
+
+static int gem_mac_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
+{
+	u32 mac_cstat = readl(gp->regs + MAC_CSTAT);
+
+	if (netif_msg_intr(gp))
+		printk(KERN_DEBUG "%s: mac interrupt, mac_cstat: 0x%x\n",
+			gp->dev->name, mac_cstat);
+
+	/* This interrupt is just for pause frame and pause
+	 * tracking.  It is useful for diagnostics and debug
+	 * but probably by default we will mask these events.
+	 */
+	if (mac_cstat & MAC_CSTAT_PS)
+		gp->pause_entered++;
+
+	if (mac_cstat & MAC_CSTAT_PRCV)
+		gp->pause_last_time_recvd = (mac_cstat >> 16);
+
+	return 0;
+}
+
+static int gem_mif_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
+{
+	u32 mif_status = readl(gp->regs + MIF_STATUS);
+	u32 reg_val, changed_bits;
+
+	reg_val = (mif_status & MIF_STATUS_DATA) >> 16;
+	changed_bits = (mif_status & MIF_STATUS_STAT);
+
+	gem_handle_mif_event(gp, reg_val, changed_bits);
+
+	return 0;
+}
+
+static int gem_pci_interrupt(struct net_device *dev, struct gem *gp, u32 gem_status)
+{
+	u32 pci_estat = readl(gp->regs + GREG_PCIESTAT);
+
+	if (gp->pdev->vendor == PCI_VENDOR_ID_SUN &&
+	    gp->pdev->device == PCI_DEVICE_ID_SUN_GEM) {
+		netdev_err(dev, "PCI error [%04x]", pci_estat);
+
+		if (pci_estat & GREG_PCIESTAT_BADACK)
+			pr_cont(" <No ACK64# during ABS64 cycle>");
+		if (pci_estat & GREG_PCIESTAT_DTRTO)
+			pr_cont(" <Delayed transaction timeout>");
+		if (pci_estat & GREG_PCIESTAT_OTHER)
+			pr_cont(" <other>");
+		pr_cont("\n");
+	} else {
+		pci_estat |= GREG_PCIESTAT_OTHER;
+		netdev_err(dev, "PCI error\n");
+	}
+
+	if (pci_estat & GREG_PCIESTAT_OTHER) {
+		u16 pci_cfg_stat;
+
+		/* Interrogate PCI config space for the
+		 * true cause.
+		 */
+		pci_read_config_word(gp->pdev, PCI_STATUS,
+				     &pci_cfg_stat);
+		netdev_err(dev, "Read PCI cfg space status [%04x]\n",
+			   pci_cfg_stat);
+		if (pci_cfg_stat & PCI_STATUS_PARITY)
+			netdev_err(dev, "PCI parity error detected\n");
+		if (pci_cfg_stat & PCI_STATUS_SIG_TARGET_ABORT)
+			netdev_err(dev, "PCI target abort\n");
+		if (pci_cfg_stat & PCI_STATUS_REC_TARGET_ABORT)
+			netdev_err(dev, "PCI master acks target abort\n");
+		if (pci_cfg_stat & PCI_STATUS_REC_MASTER_ABORT)
+			netdev_err(dev, "PCI master abort\n");
+		if (pci_cfg_stat & PCI_STATUS_SIG_SYSTEM_ERROR)
+			netdev_err(dev, "PCI system error SERR#\n");
+		if (pci_cfg_stat & PCI_STATUS_DETECTED_PARITY)
+			netdev_err(dev, "PCI parity error\n");
+
+		/* Write the error bits back to clear them. */
+		pci_cfg_stat &= (PCI_STATUS_PARITY |
+				 PCI_STATUS_SIG_TARGET_ABORT |
+				 PCI_STATUS_REC_TARGET_ABORT |
+				 PCI_STATUS_REC_MASTER_ABORT |
+				 PCI_STATUS_SIG_SYSTEM_ERROR |
+				 PCI_STATUS_DETECTED_PARITY);
+		pci_write_config_word(gp->pdev,
+				      PCI_STATUS, pci_cfg_stat);
+	}
+
+	/* For all PCI errors, we should reset the chip. */
+	return 1;
+}
+
+/* All non-normal interrupt conditions get serviced here.
+ * Returns non-zero if we should just exit the interrupt
+ * handler right now (ie. if we reset the card which invalidates
+ * all of the other original irq status bits).
+ */
+static int gem_abnormal_irq(struct net_device *dev, struct gem *gp, u32 gem_status)
+{
+	if (gem_status & GREG_STAT_RXNOBUF) {
+		/* Frame arrived, no free RX buffers available. */
+		if (netif_msg_rx_err(gp))
+			printk(KERN_DEBUG "%s: no buffer for rx frame\n",
+				gp->dev->name);
+		dev->stats.rx_dropped++;
+	}
+
+	if (gem_status & GREG_STAT_RXTAGERR) {
+		/* corrupt RX tag framing */
+		if (netif_msg_rx_err(gp))
+			printk(KERN_DEBUG "%s: corrupt rx tag framing\n",
+				gp->dev->name);
+		dev->stats.rx_errors++;
+
+		return 1;
+	}
+
+	if (gem_status & GREG_STAT_PCS) {
+		if (gem_pcs_interrupt(dev, gp, gem_status))
+			return 1;
+	}
+
+	if (gem_status & GREG_STAT_TXMAC) {
+		if (gem_txmac_interrupt(dev, gp, gem_status))
+			return 1;
+	}
+
+	if (gem_status & GREG_STAT_RXMAC) {
+		if (gem_rxmac_interrupt(dev, gp, gem_status))
+			return 1;
+	}
+
+	if (gem_status & GREG_STAT_MAC) {
+		if (gem_mac_interrupt(dev, gp, gem_status))
+			return 1;
+	}
+
+	if (gem_status & GREG_STAT_MIF) {
+		if (gem_mif_interrupt(dev, gp, gem_status))
+			return 1;
+	}
+
+	if (gem_status & GREG_STAT_PCIERR) {
+		if (gem_pci_interrupt(dev, gp, gem_status))
+			return 1;
+	}
+
+	return 0;
+}
+
+static __inline__ void gem_tx(struct net_device *dev, struct gem *gp, u32 gem_status)
+{
+	int entry, limit;
+
+	entry = gp->tx_old;
+	limit = ((gem_status & GREG_STAT_TXNR) >> GREG_STAT_TXNR_SHIFT);
+	while (entry != limit) {
+		struct sk_buff *skb;
+		struct gem_txd *txd;
+		dma_addr_t dma_addr;
+		u32 dma_len;
+		int frag;
+
+		if (netif_msg_tx_done(gp))
+			printk(KERN_DEBUG "%s: tx done, slot %d\n",
+				gp->dev->name, entry);
+		skb = gp->tx_skbs[entry];
+		if (skb_shinfo(skb)->nr_frags) {
+			int last = entry + skb_shinfo(skb)->nr_frags;
+			int walk = entry;
+			int incomplete = 0;
+
+			last &= (TX_RING_SIZE - 1);
+			for (;;) {
+				walk = NEXT_TX(walk);
+				if (walk == limit)
+					incomplete = 1;
+				if (walk == last)
+					break;
+			}
+			if (incomplete)
+				break;
+		}
+		gp->tx_skbs[entry] = NULL;
+		dev->stats.tx_bytes += skb->len;
+
+		for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
+			txd = &gp->init_block->txd[entry];
+
+			dma_addr = le64_to_cpu(txd->buffer);
+			dma_len = le64_to_cpu(txd->control_word) & TXDCTRL_BUFSZ;
+
+			pci_unmap_page(gp->pdev, dma_addr, dma_len, PCI_DMA_TODEVICE);
+			entry = NEXT_TX(entry);
+		}
+
+		dev->stats.tx_packets++;
+		dev_consume_skb_any(skb);
+	}
+	gp->tx_old = entry;
+
+	/* Need to make the tx_old update visible to gem_start_xmit()
+	 * before checking for netif_queue_stopped().  Without the
+	 * memory barrier, there is a small possibility that gem_start_xmit()
+	 * will miss it and cause the queue to be stopped forever.
+	 */
+	smp_mb();
+
+	if (unlikely(netif_queue_stopped(dev) &&
+		     TX_BUFFS_AVAIL(gp) > (MAX_SKB_FRAGS + 1))) {
+		struct netdev_queue *txq = netdev_get_tx_queue(dev, 0);
+
+		__netif_tx_lock(txq, smp_processor_id());
+		if (netif_queue_stopped(dev) &&
+		    TX_BUFFS_AVAIL(gp) > (MAX_SKB_FRAGS + 1))
+			netif_wake_queue(dev);
+		__netif_tx_unlock(txq);
+	}
+}
+
+static __inline__ void gem_post_rxds(struct gem *gp, int limit)
+{
+	int cluster_start, curr, count, kick;
+
+	cluster_start = curr = (gp->rx_new & ~(4 - 1));
+	count = 0;
+	kick = -1;
+	dma_wmb();
+	while (curr != limit) {
+		curr = NEXT_RX(curr);
+		if (++count == 4) {
+			struct gem_rxd *rxd =
+				&gp->init_block->rxd[cluster_start];
+			for (;;) {
+				rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
+				rxd++;
+				cluster_start = NEXT_RX(cluster_start);
+				if (cluster_start == curr)
+					break;
+			}
+			kick = curr;
+			count = 0;
+		}
+	}
+	if (kick >= 0) {
+		mb();
+		writel(kick, gp->regs + RXDMA_KICK);
+	}
+}
+
+#define ALIGNED_RX_SKB_ADDR(addr) \
+        ((((unsigned long)(addr) + (64UL - 1UL)) & ~(64UL - 1UL)) - (unsigned long)(addr))
+static __inline__ struct sk_buff *gem_alloc_skb(struct net_device *dev, int size,
+						gfp_t gfp_flags)
+{
+	struct sk_buff *skb = alloc_skb(size + 64, gfp_flags);
+
+	if (likely(skb)) {
+		unsigned long offset = ALIGNED_RX_SKB_ADDR(skb->data);
+		skb_reserve(skb, offset);
+	}
+	return skb;
+}
+
+static int gem_rx(struct gem *gp, int work_to_do)
+{
+	struct net_device *dev = gp->dev;
+	int entry, drops, work_done = 0;
+	u32 done;
+
+	if (netif_msg_rx_status(gp))
+		printk(KERN_DEBUG "%s: rx interrupt, done: %d, rx_new: %d\n",
+			gp->dev->name, readl(gp->regs + RXDMA_DONE), gp->rx_new);
+
+	entry = gp->rx_new;
+	drops = 0;
+	done = readl(gp->regs + RXDMA_DONE);
+	for (;;) {
+		struct gem_rxd *rxd = &gp->init_block->rxd[entry];
+		struct sk_buff *skb;
+		u64 status = le64_to_cpu(rxd->status_word);
+		dma_addr_t dma_addr;
+		int len;
+
+		if ((status & RXDCTRL_OWN) != 0)
+			break;
+
+		if (work_done >= RX_RING_SIZE || work_done >= work_to_do)
+			break;
+
+		/* When writing back RX descriptor, GEM writes status
+		 * then buffer address, possibly in separate transactions.
+		 * If we don't wait for the chip to write both, we could
+		 * post a new buffer to this descriptor then have GEM spam
+		 * on the buffer address.  We sync on the RX completion
+		 * register to prevent this from happening.
+		 */
+		if (entry == done) {
+			done = readl(gp->regs + RXDMA_DONE);
+			if (entry == done)
+				break;
+		}
+
+		/* We can now account for the work we're about to do */
+		work_done++;
+
+		skb = gp->rx_skbs[entry];
+
+		len = (status & RXDCTRL_BUFSZ) >> 16;
+		if ((len < ETH_ZLEN) || (status & RXDCTRL_BAD)) {
+			dev->stats.rx_errors++;
+			if (len < ETH_ZLEN)
+				dev->stats.rx_length_errors++;
+			if (len & RXDCTRL_BAD)
+				dev->stats.rx_crc_errors++;
+
+			/* We'll just return it to GEM. */
+		drop_it:
+			dev->stats.rx_dropped++;
+			goto next;
+		}
+
+		dma_addr = le64_to_cpu(rxd->buffer);
+		if (len > RX_COPY_THRESHOLD) {
+			struct sk_buff *new_skb;
+
+			new_skb = gem_alloc_skb(dev, RX_BUF_ALLOC_SIZE(gp), GFP_ATOMIC);
+			if (new_skb == NULL) {
+				drops++;
+				goto drop_it;
+			}
+			pci_unmap_page(gp->pdev, dma_addr,
+				       RX_BUF_ALLOC_SIZE(gp),
+				       PCI_DMA_FROMDEVICE);
+			gp->rx_skbs[entry] = new_skb;
+			skb_put(new_skb, (gp->rx_buf_sz + RX_OFFSET));
+			rxd->buffer = cpu_to_le64(pci_map_page(gp->pdev,
+							       virt_to_page(new_skb->data),
+							       offset_in_page(new_skb->data),
+							       RX_BUF_ALLOC_SIZE(gp),
+							       PCI_DMA_FROMDEVICE));
+			skb_reserve(new_skb, RX_OFFSET);
+
+			/* Trim the original skb for the netif. */
+			skb_trim(skb, len);
+		} else {
+			struct sk_buff *copy_skb = netdev_alloc_skb(dev, len + 2);
+
+			if (copy_skb == NULL) {
+				drops++;
+				goto drop_it;
+			}
+
+			skb_reserve(copy_skb, 2);
+			skb_put(copy_skb, len);
+			pci_dma_sync_single_for_cpu(gp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE);
+			skb_copy_from_linear_data(skb, copy_skb->data, len);
+			pci_dma_sync_single_for_device(gp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE);
+
+			/* We'll reuse the original ring buffer. */
+			skb = copy_skb;
+		}
+
+		if (likely(dev->features & NETIF_F_RXCSUM)) {
+			__sum16 csum;
+
+			csum = (__force __sum16)htons((status & RXDCTRL_TCPCSUM) ^ 0xffff);
+			skb->csum = csum_unfold(csum);
+			skb->ip_summed = CHECKSUM_COMPLETE;
+		}
+		skb->protocol = eth_type_trans(skb, gp->dev);
+
+		napi_gro_receive(&gp->napi, skb);
+
+		dev->stats.rx_packets++;
+		dev->stats.rx_bytes += len;
+
+	next:
+		entry = NEXT_RX(entry);
+	}
+
+	gem_post_rxds(gp, entry);
+
+	gp->rx_new = entry;
+
+	if (drops)
+		netdev_info(gp->dev, "Memory squeeze, deferring packet\n");
+
+	return work_done;
+}
+
+static int gem_poll(struct napi_struct *napi, int budget)
+{
+	struct gem *gp = container_of(napi, struct gem, napi);
+	struct net_device *dev = gp->dev;
+	int work_done;
+
+	work_done = 0;
+	do {
+		/* Handle anomalies */
+		if (unlikely(gp->status & GREG_STAT_ABNORMAL)) {
+			struct netdev_queue *txq = netdev_get_tx_queue(dev, 0);
+			int reset;
+
+			/* We run the abnormal interrupt handling code with
+			 * the Tx lock. It only resets the Rx portion of the
+			 * chip, but we need to guard it against DMA being
+			 * restarted by the link poll timer
+			 */
+			__netif_tx_lock(txq, smp_processor_id());
+			reset = gem_abnormal_irq(dev, gp, gp->status);
+			__netif_tx_unlock(txq);
+			if (reset) {
+				gem_schedule_reset(gp);
+				napi_complete(napi);
+				return work_done;
+			}
+		}
+
+		/* Run TX completion thread */
+		gem_tx(dev, gp, gp->status);
+
+		/* Run RX thread. We don't use any locking here,
+		 * code willing to do bad things - like cleaning the
+		 * rx ring - must call napi_disable(), which
+		 * schedule_timeout()'s if polling is already disabled.
+		 */
+		work_done += gem_rx(gp, budget - work_done);
+
+		if (work_done >= budget)
+			return work_done;
+
+		gp->status = readl(gp->regs + GREG_STAT);
+	} while (gp->status & GREG_STAT_NAPI);
+
+	napi_complete_done(napi, work_done);
+	gem_enable_ints(gp);
+
+	return work_done;
+}
+
+static irqreturn_t gem_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct gem *gp = netdev_priv(dev);
+
+	if (napi_schedule_prep(&gp->napi)) {
+		u32 gem_status = readl(gp->regs + GREG_STAT);
+
+		if (unlikely(gem_status == 0)) {
+			napi_enable(&gp->napi);
+			return IRQ_NONE;
+		}
+		if (netif_msg_intr(gp))
+			printk(KERN_DEBUG "%s: gem_interrupt() gem_status: 0x%x\n",
+			       gp->dev->name, gem_status);
+
+		gp->status = gem_status;
+		gem_disable_ints(gp);
+		__napi_schedule(&gp->napi);
+	}
+
+	/* If polling was disabled at the time we received that
+	 * interrupt, we may return IRQ_HANDLED here while we
+	 * should return IRQ_NONE. No big deal...
+	 */
+	return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void gem_poll_controller(struct net_device *dev)
+{
+	struct gem *gp = netdev_priv(dev);
+
+	disable_irq(gp->pdev->irq);
+	gem_interrupt(gp->pdev->irq, dev);
+	enable_irq(gp->pdev->irq);
+}
+#endif
+
+static void gem_tx_timeout(struct net_device *dev)
+{
+	struct gem *gp = netdev_priv(dev);
+
+	netdev_err(dev, "transmit timed out, resetting\n");
+
+	netdev_err(dev, "TX_STATE[%08x:%08x:%08x]\n",
+		   readl(gp->regs + TXDMA_CFG),
+		   readl(gp->regs + MAC_TXSTAT),
+		   readl(gp->regs + MAC_TXCFG));
+	netdev_err(dev, "RX_STATE[%08x:%08x:%08x]\n",
+		   readl(gp->regs + RXDMA_CFG),
+		   readl(gp->regs + MAC_RXSTAT),
+		   readl(gp->regs + MAC_RXCFG));
+
+	gem_schedule_reset(gp);
+}
+
+static __inline__ int gem_intme(int entry)
+{
+	/* Algorithm: IRQ every 1/2 of descriptors. */
+	if (!(entry & ((TX_RING_SIZE>>1)-1)))
+		return 1;
+
+	return 0;
+}
+
+static netdev_tx_t gem_start_xmit(struct sk_buff *skb,
+				  struct net_device *dev)
+{
+	struct gem *gp = netdev_priv(dev);
+	int entry;
+	u64 ctrl;
+
+	ctrl = 0;
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		const u64 csum_start_off = skb_checksum_start_offset(skb);
+		const u64 csum_stuff_off = csum_start_off + skb->csum_offset;
+
+		ctrl = (TXDCTRL_CENAB |
+			(csum_start_off << 15) |
+			(csum_stuff_off << 21));
+	}
+
+	if (unlikely(TX_BUFFS_AVAIL(gp) <= (skb_shinfo(skb)->nr_frags + 1))) {
+		/* This is a hard error, log it. */
+		if (!netif_queue_stopped(dev)) {
+			netif_stop_queue(dev);
+			netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
+		}
+		return NETDEV_TX_BUSY;
+	}
+
+	entry = gp->tx_new;
+	gp->tx_skbs[entry] = skb;
+
+	if (skb_shinfo(skb)->nr_frags == 0) {
+		struct gem_txd *txd = &gp->init_block->txd[entry];
+		dma_addr_t mapping;
+		u32 len;
+
+		len = skb->len;
+		mapping = pci_map_page(gp->pdev,
+				       virt_to_page(skb->data),
+				       offset_in_page(skb->data),
+				       len, PCI_DMA_TODEVICE);
+		ctrl |= TXDCTRL_SOF | TXDCTRL_EOF | len;
+		if (gem_intme(entry))
+			ctrl |= TXDCTRL_INTME;
+		txd->buffer = cpu_to_le64(mapping);
+		dma_wmb();
+		txd->control_word = cpu_to_le64(ctrl);
+		entry = NEXT_TX(entry);
+	} else {
+		struct gem_txd *txd;
+		u32 first_len;
+		u64 intme;
+		dma_addr_t first_mapping;
+		int frag, first_entry = entry;
+
+		intme = 0;
+		if (gem_intme(entry))
+			intme |= TXDCTRL_INTME;
+
+		/* We must give this initial chunk to the device last.
+		 * Otherwise we could race with the device.
+		 */
+		first_len = skb_headlen(skb);
+		first_mapping = pci_map_page(gp->pdev, virt_to_page(skb->data),
+					     offset_in_page(skb->data),
+					     first_len, PCI_DMA_TODEVICE);
+		entry = NEXT_TX(entry);
+
+		for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
+			const skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
+			u32 len;
+			dma_addr_t mapping;
+			u64 this_ctrl;
+
+			len = skb_frag_size(this_frag);
+			mapping = skb_frag_dma_map(&gp->pdev->dev, this_frag,
+						   0, len, DMA_TO_DEVICE);
+			this_ctrl = ctrl;
+			if (frag == skb_shinfo(skb)->nr_frags - 1)
+				this_ctrl |= TXDCTRL_EOF;
+
+			txd = &gp->init_block->txd[entry];
+			txd->buffer = cpu_to_le64(mapping);
+			dma_wmb();
+			txd->control_word = cpu_to_le64(this_ctrl | len);
+
+			if (gem_intme(entry))
+				intme |= TXDCTRL_INTME;
+
+			entry = NEXT_TX(entry);
+		}
+		txd = &gp->init_block->txd[first_entry];
+		txd->buffer = cpu_to_le64(first_mapping);
+		dma_wmb();
+		txd->control_word =
+			cpu_to_le64(ctrl | TXDCTRL_SOF | intme | first_len);
+	}
+
+	gp->tx_new = entry;
+	if (unlikely(TX_BUFFS_AVAIL(gp) <= (MAX_SKB_FRAGS + 1))) {
+		netif_stop_queue(dev);
+
+		/* netif_stop_queue() must be done before checking
+		 * checking tx index in TX_BUFFS_AVAIL() below, because
+		 * in gem_tx(), we update tx_old before checking for
+		 * netif_queue_stopped().
+		 */
+		smp_mb();
+		if (TX_BUFFS_AVAIL(gp) > (MAX_SKB_FRAGS + 1))
+			netif_wake_queue(dev);
+	}
+	if (netif_msg_tx_queued(gp))
+		printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n",
+		       dev->name, entry, skb->len);
+	mb();
+	writel(gp->tx_new, gp->regs + TXDMA_KICK);
+
+	return NETDEV_TX_OK;
+}
+
+static void gem_pcs_reset(struct gem *gp)
+{
+	int limit;
+	u32 val;
+
+	/* Reset PCS unit. */
+	val = readl(gp->regs + PCS_MIICTRL);
+	val |= PCS_MIICTRL_RST;
+	writel(val, gp->regs + PCS_MIICTRL);
+
+	limit = 32;
+	while (readl(gp->regs + PCS_MIICTRL) & PCS_MIICTRL_RST) {
+		udelay(100);
+		if (limit-- <= 0)
+			break;
+	}
+	if (limit < 0)
+		netdev_warn(gp->dev, "PCS reset bit would not clear\n");
+}
+
+static void gem_pcs_reinit_adv(struct gem *gp)
+{
+	u32 val;
+
+	/* Make sure PCS is disabled while changing advertisement
+	 * configuration.
+	 */
+	val = readl(gp->regs + PCS_CFG);
+	val &= ~(PCS_CFG_ENABLE | PCS_CFG_TO);
+	writel(val, gp->regs + PCS_CFG);
+
+	/* Advertise all capabilities except asymmetric
+	 * pause.
+	 */
+	val = readl(gp->regs + PCS_MIIADV);
+	val |= (PCS_MIIADV_FD | PCS_MIIADV_HD |
+		PCS_MIIADV_SP | PCS_MIIADV_AP);
+	writel(val, gp->regs + PCS_MIIADV);
+
+	/* Enable and restart auto-negotiation, disable wrapback/loopback,
+	 * and re-enable PCS.
+	 */
+	val = readl(gp->regs + PCS_MIICTRL);
+	val |= (PCS_MIICTRL_RAN | PCS_MIICTRL_ANE);
+	val &= ~PCS_MIICTRL_WB;
+	writel(val, gp->regs + PCS_MIICTRL);
+
+	val = readl(gp->regs + PCS_CFG);
+	val |= PCS_CFG_ENABLE;
+	writel(val, gp->regs + PCS_CFG);
+
+	/* Make sure serialink loopback is off.  The meaning
+	 * of this bit is logically inverted based upon whether
+	 * you are in Serialink or SERDES mode.
+	 */
+	val = readl(gp->regs + PCS_SCTRL);
+	if (gp->phy_type == phy_serialink)
+		val &= ~PCS_SCTRL_LOOP;
+	else
+		val |= PCS_SCTRL_LOOP;
+	writel(val, gp->regs + PCS_SCTRL);
+}
+
+#define STOP_TRIES 32
+
+static void gem_reset(struct gem *gp)
+{
+	int limit;
+	u32 val;
+
+	/* Make sure we won't get any more interrupts */
+	writel(0xffffffff, gp->regs + GREG_IMASK);
+
+	/* Reset the chip */
+	writel(gp->swrst_base | GREG_SWRST_TXRST | GREG_SWRST_RXRST,
+	       gp->regs + GREG_SWRST);
+
+	limit = STOP_TRIES;
+
+	do {
+		udelay(20);
+		val = readl(gp->regs + GREG_SWRST);
+		if (limit-- <= 0)
+			break;
+	} while (val & (GREG_SWRST_TXRST | GREG_SWRST_RXRST));
+
+	if (limit < 0)
+		netdev_err(gp->dev, "SW reset is ghetto\n");
+
+	if (gp->phy_type == phy_serialink || gp->phy_type == phy_serdes)
+		gem_pcs_reinit_adv(gp);
+}
+
+static void gem_start_dma(struct gem *gp)
+{
+	u32 val;
+
+	/* We are ready to rock, turn everything on. */
+	val = readl(gp->regs + TXDMA_CFG);
+	writel(val | TXDMA_CFG_ENABLE, gp->regs + TXDMA_CFG);
+	val = readl(gp->regs + RXDMA_CFG);
+	writel(val | RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
+	val = readl(gp->regs + MAC_TXCFG);
+	writel(val | MAC_TXCFG_ENAB, gp->regs + MAC_TXCFG);
+	val = readl(gp->regs + MAC_RXCFG);
+	writel(val | MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
+
+	(void) readl(gp->regs + MAC_RXCFG);
+	udelay(100);
+
+	gem_enable_ints(gp);
+
+	writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
+}
+
+/* DMA won't be actually stopped before about 4ms tho ...
+ */
+static void gem_stop_dma(struct gem *gp)
+{
+	u32 val;
+
+	/* We are done rocking, turn everything off. */
+	val = readl(gp->regs + TXDMA_CFG);
+	writel(val & ~TXDMA_CFG_ENABLE, gp->regs + TXDMA_CFG);
+	val = readl(gp->regs + RXDMA_CFG);
+	writel(val & ~RXDMA_CFG_ENABLE, gp->regs + RXDMA_CFG);
+	val = readl(gp->regs + MAC_TXCFG);
+	writel(val & ~MAC_TXCFG_ENAB, gp->regs + MAC_TXCFG);
+	val = readl(gp->regs + MAC_RXCFG);
+	writel(val & ~MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
+
+	(void) readl(gp->regs + MAC_RXCFG);
+
+	/* Need to wait a bit ... done by the caller */
+}
+
+
+// XXX dbl check what that function should do when called on PCS PHY
+static void gem_begin_auto_negotiation(struct gem *gp,
+				       const struct ethtool_link_ksettings *ep)
+{
+	u32 advertise, features;
+	int autoneg;
+	int speed;
+	int duplex;
+	u32 advertising;
+
+	if (ep)
+		ethtool_convert_link_mode_to_legacy_u32(
+			&advertising, ep->link_modes.advertising);
+
+	if (gp->phy_type != phy_mii_mdio0 &&
+     	    gp->phy_type != phy_mii_mdio1)
+     	    	goto non_mii;
+
+	/* Setup advertise */
+	if (found_mii_phy(gp))
+		features = gp->phy_mii.def->features;
+	else
+		features = 0;
+
+	advertise = features & ADVERTISE_MASK;
+	if (gp->phy_mii.advertising != 0)
+		advertise &= gp->phy_mii.advertising;
+
+	autoneg = gp->want_autoneg;
+	speed = gp->phy_mii.speed;
+	duplex = gp->phy_mii.duplex;
+
+	/* Setup link parameters */
+	if (!ep)
+		goto start_aneg;
+	if (ep->base.autoneg == AUTONEG_ENABLE) {
+		advertise = advertising;
+		autoneg = 1;
+	} else {
+		autoneg = 0;
+		speed = ep->base.speed;
+		duplex = ep->base.duplex;
+	}
+
+start_aneg:
+	/* Sanitize settings based on PHY capabilities */
+	if ((features & SUPPORTED_Autoneg) == 0)
+		autoneg = 0;
+	if (speed == SPEED_1000 &&
+	    !(features & (SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)))
+		speed = SPEED_100;
+	if (speed == SPEED_100 &&
+	    !(features & (SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full)))
+		speed = SPEED_10;
+	if (duplex == DUPLEX_FULL &&
+	    !(features & (SUPPORTED_1000baseT_Full |
+	    		  SUPPORTED_100baseT_Full |
+	    		  SUPPORTED_10baseT_Full)))
+	    	duplex = DUPLEX_HALF;
+	if (speed == 0)
+		speed = SPEED_10;
+
+	/* If we are asleep, we don't try to actually setup the PHY, we
+	 * just store the settings
+	 */
+	if (!netif_device_present(gp->dev)) {
+		gp->phy_mii.autoneg = gp->want_autoneg = autoneg;
+		gp->phy_mii.speed = speed;
+		gp->phy_mii.duplex = duplex;
+		return;
+	}
+
+	/* Configure PHY & start aneg */
+	gp->want_autoneg = autoneg;
+	if (autoneg) {
+		if (found_mii_phy(gp))
+			gp->phy_mii.def->ops->setup_aneg(&gp->phy_mii, advertise);
+		gp->lstate = link_aneg;
+	} else {
+		if (found_mii_phy(gp))
+			gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, speed, duplex);
+		gp->lstate = link_force_ok;
+	}
+
+non_mii:
+	gp->timer_ticks = 0;
+	mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10));
+}
+
+/* A link-up condition has occurred, initialize and enable the
+ * rest of the chip.
+ */
+static int gem_set_link_modes(struct gem *gp)
+{
+	struct netdev_queue *txq = netdev_get_tx_queue(gp->dev, 0);
+	int full_duplex, speed, pause;
+	u32 val;
+
+	full_duplex = 0;
+	speed = SPEED_10;
+	pause = 0;
+
+	if (found_mii_phy(gp)) {
+	    	if (gp->phy_mii.def->ops->read_link(&gp->phy_mii))
+	    		return 1;
+		full_duplex = (gp->phy_mii.duplex == DUPLEX_FULL);
+		speed = gp->phy_mii.speed;
+		pause = gp->phy_mii.pause;
+	} else if (gp->phy_type == phy_serialink ||
+	    	   gp->phy_type == phy_serdes) {
+		u32 pcs_lpa = readl(gp->regs + PCS_MIILP);
+
+		if ((pcs_lpa & PCS_MIIADV_FD) || gp->phy_type == phy_serdes)
+			full_duplex = 1;
+		speed = SPEED_1000;
+	}
+
+	netif_info(gp, link, gp->dev, "Link is up at %d Mbps, %s-duplex\n",
+		   speed, (full_duplex ? "full" : "half"));
+
+
+	/* We take the tx queue lock to avoid collisions between
+	 * this code, the tx path and the NAPI-driven error path
+	 */
+	__netif_tx_lock(txq, smp_processor_id());
+
+	val = (MAC_TXCFG_EIPG0 | MAC_TXCFG_NGU);
+	if (full_duplex) {
+		val |= (MAC_TXCFG_ICS | MAC_TXCFG_ICOLL);
+	} else {
+		/* MAC_TXCFG_NBO must be zero. */
+	}
+	writel(val, gp->regs + MAC_TXCFG);
+
+	val = (MAC_XIFCFG_OE | MAC_XIFCFG_LLED);
+	if (!full_duplex &&
+	    (gp->phy_type == phy_mii_mdio0 ||
+	     gp->phy_type == phy_mii_mdio1)) {
+		val |= MAC_XIFCFG_DISE;
+	} else if (full_duplex) {
+		val |= MAC_XIFCFG_FLED;
+	}
+
+	if (speed == SPEED_1000)
+		val |= (MAC_XIFCFG_GMII);
+
+	writel(val, gp->regs + MAC_XIFCFG);
+
+	/* If gigabit and half-duplex, enable carrier extension
+	 * mode.  Else, disable it.
+	 */
+	if (speed == SPEED_1000 && !full_duplex) {
+		val = readl(gp->regs + MAC_TXCFG);
+		writel(val | MAC_TXCFG_TCE, gp->regs + MAC_TXCFG);
+
+		val = readl(gp->regs + MAC_RXCFG);
+		writel(val | MAC_RXCFG_RCE, gp->regs + MAC_RXCFG);
+	} else {
+		val = readl(gp->regs + MAC_TXCFG);
+		writel(val & ~MAC_TXCFG_TCE, gp->regs + MAC_TXCFG);
+
+		val = readl(gp->regs + MAC_RXCFG);
+		writel(val & ~MAC_RXCFG_RCE, gp->regs + MAC_RXCFG);
+	}
+
+	if (gp->phy_type == phy_serialink ||
+	    gp->phy_type == phy_serdes) {
+ 		u32 pcs_lpa = readl(gp->regs + PCS_MIILP);
+
+		if (pcs_lpa & (PCS_MIIADV_SP | PCS_MIIADV_AP))
+			pause = 1;
+	}
+
+	if (!full_duplex)
+		writel(512, gp->regs + MAC_STIME);
+	else
+		writel(64, gp->regs + MAC_STIME);
+	val = readl(gp->regs + MAC_MCCFG);
+	if (pause)
+		val |= (MAC_MCCFG_SPE | MAC_MCCFG_RPE);
+	else
+		val &= ~(MAC_MCCFG_SPE | MAC_MCCFG_RPE);
+	writel(val, gp->regs + MAC_MCCFG);
+
+	gem_start_dma(gp);
+
+	__netif_tx_unlock(txq);
+
+	if (netif_msg_link(gp)) {
+		if (pause) {
+			netdev_info(gp->dev,
+				    "Pause is enabled (rxfifo: %d off: %d on: %d)\n",
+				    gp->rx_fifo_sz,
+				    gp->rx_pause_off,
+				    gp->rx_pause_on);
+		} else {
+			netdev_info(gp->dev, "Pause is disabled\n");
+		}
+	}
+
+	return 0;
+}
+
+static int gem_mdio_link_not_up(struct gem *gp)
+{
+	switch (gp->lstate) {
+	case link_force_ret:
+		netif_info(gp, link, gp->dev,
+			   "Autoneg failed again, keeping forced mode\n");
+		gp->phy_mii.def->ops->setup_forced(&gp->phy_mii,
+			gp->last_forced_speed, DUPLEX_HALF);
+		gp->timer_ticks = 5;
+		gp->lstate = link_force_ok;
+		return 0;
+	case link_aneg:
+		/* We try forced modes after a failed aneg only on PHYs that don't
+		 * have "magic_aneg" bit set, which means they internally do the
+		 * while forced-mode thingy. On these, we just restart aneg
+		 */
+		if (gp->phy_mii.def->magic_aneg)
+			return 1;
+		netif_info(gp, link, gp->dev, "switching to forced 100bt\n");
+		/* Try forced modes. */
+		gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, SPEED_100,
+			DUPLEX_HALF);
+		gp->timer_ticks = 5;
+		gp->lstate = link_force_try;
+		return 0;
+	case link_force_try:
+		/* Downgrade from 100 to 10 Mbps if necessary.
+		 * If already at 10Mbps, warn user about the
+		 * situation every 10 ticks.
+		 */
+		if (gp->phy_mii.speed == SPEED_100) {
+			gp->phy_mii.def->ops->setup_forced(&gp->phy_mii, SPEED_10,
+				DUPLEX_HALF);
+			gp->timer_ticks = 5;
+			netif_info(gp, link, gp->dev,
+				   "switching to forced 10bt\n");
+			return 0;
+		} else
+			return 1;
+	default:
+		return 0;
+	}
+}
+
+static void gem_link_timer(struct timer_list *t)
+{
+	struct gem *gp = from_timer(gp, t, link_timer);
+	struct net_device *dev = gp->dev;
+	int restart_aneg = 0;
+
+	/* There's no point doing anything if we're going to be reset */
+	if (gp->reset_task_pending)
+		return;
+
+	if (gp->phy_type == phy_serialink ||
+	    gp->phy_type == phy_serdes) {
+		u32 val = readl(gp->regs + PCS_MIISTAT);
+
+		if (!(val & PCS_MIISTAT_LS))
+			val = readl(gp->regs + PCS_MIISTAT);
+
+		if ((val & PCS_MIISTAT_LS) != 0) {
+			if (gp->lstate == link_up)
+				goto restart;
+
+			gp->lstate = link_up;
+			netif_carrier_on(dev);
+			(void)gem_set_link_modes(gp);
+		}
+		goto restart;
+	}
+	if (found_mii_phy(gp) && gp->phy_mii.def->ops->poll_link(&gp->phy_mii)) {
+		/* Ok, here we got a link. If we had it due to a forced
+		 * fallback, and we were configured for autoneg, we do
+		 * retry a short autoneg pass. If you know your hub is
+		 * broken, use ethtool ;)
+		 */
+		if (gp->lstate == link_force_try && gp->want_autoneg) {
+			gp->lstate = link_force_ret;
+			gp->last_forced_speed = gp->phy_mii.speed;
+			gp->timer_ticks = 5;
+			if (netif_msg_link(gp))
+				netdev_info(dev,
+					    "Got link after fallback, retrying autoneg once...\n");
+			gp->phy_mii.def->ops->setup_aneg(&gp->phy_mii, gp->phy_mii.advertising);
+		} else if (gp->lstate != link_up) {
+			gp->lstate = link_up;
+			netif_carrier_on(dev);
+			if (gem_set_link_modes(gp))
+				restart_aneg = 1;
+		}
+	} else {
+		/* If the link was previously up, we restart the
+		 * whole process
+		 */
+		if (gp->lstate == link_up) {
+			gp->lstate = link_down;
+			netif_info(gp, link, dev, "Link down\n");
+			netif_carrier_off(dev);
+			gem_schedule_reset(gp);
+			/* The reset task will restart the timer */
+			return;
+		} else if (++gp->timer_ticks > 10) {
+			if (found_mii_phy(gp))
+				restart_aneg = gem_mdio_link_not_up(gp);
+			else
+				restart_aneg = 1;
+		}
+	}
+	if (restart_aneg) {
+		gem_begin_auto_negotiation(gp, NULL);
+		return;
+	}
+restart:
+	mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10));
+}
+
+static void gem_clean_rings(struct gem *gp)
+{
+	struct gem_init_block *gb = gp->init_block;
+	struct sk_buff *skb;
+	int i;
+	dma_addr_t dma_addr;
+
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		struct gem_rxd *rxd;
+
+		rxd = &gb->rxd[i];
+		if (gp->rx_skbs[i] != NULL) {
+			skb = gp->rx_skbs[i];
+			dma_addr = le64_to_cpu(rxd->buffer);
+			pci_unmap_page(gp->pdev, dma_addr,
+				       RX_BUF_ALLOC_SIZE(gp),
+				       PCI_DMA_FROMDEVICE);
+			dev_kfree_skb_any(skb);
+			gp->rx_skbs[i] = NULL;
+		}
+		rxd->status_word = 0;
+		dma_wmb();
+		rxd->buffer = 0;
+	}
+
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		if (gp->tx_skbs[i] != NULL) {
+			struct gem_txd *txd;
+			int frag;
+
+			skb = gp->tx_skbs[i];
+			gp->tx_skbs[i] = NULL;
+
+			for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
+				int ent = i & (TX_RING_SIZE - 1);
+
+				txd = &gb->txd[ent];
+				dma_addr = le64_to_cpu(txd->buffer);
+				pci_unmap_page(gp->pdev, dma_addr,
+					       le64_to_cpu(txd->control_word) &
+					       TXDCTRL_BUFSZ, PCI_DMA_TODEVICE);
+
+				if (frag != skb_shinfo(skb)->nr_frags)
+					i++;
+			}
+			dev_kfree_skb_any(skb);
+		}
+	}
+}
+
+static void gem_init_rings(struct gem *gp)
+{
+	struct gem_init_block *gb = gp->init_block;
+	struct net_device *dev = gp->dev;
+	int i;
+	dma_addr_t dma_addr;
+
+	gp->rx_new = gp->rx_old = gp->tx_new = gp->tx_old = 0;
+
+	gem_clean_rings(gp);
+
+	gp->rx_buf_sz = max(dev->mtu + ETH_HLEN + VLAN_HLEN,
+			    (unsigned)VLAN_ETH_FRAME_LEN);
+
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		struct sk_buff *skb;
+		struct gem_rxd *rxd = &gb->rxd[i];
+
+		skb = gem_alloc_skb(dev, RX_BUF_ALLOC_SIZE(gp), GFP_KERNEL);
+		if (!skb) {
+			rxd->buffer = 0;
+			rxd->status_word = 0;
+			continue;
+		}
+
+		gp->rx_skbs[i] = skb;
+		skb_put(skb, (gp->rx_buf_sz + RX_OFFSET));
+		dma_addr = pci_map_page(gp->pdev,
+					virt_to_page(skb->data),
+					offset_in_page(skb->data),
+					RX_BUF_ALLOC_SIZE(gp),
+					PCI_DMA_FROMDEVICE);
+		rxd->buffer = cpu_to_le64(dma_addr);
+		dma_wmb();
+		rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
+		skb_reserve(skb, RX_OFFSET);
+	}
+
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		struct gem_txd *txd = &gb->txd[i];
+
+		txd->control_word = 0;
+		dma_wmb();
+		txd->buffer = 0;
+	}
+	wmb();
+}
+
+/* Init PHY interface and start link poll state machine */
+static void gem_init_phy(struct gem *gp)
+{
+	u32 mifcfg;
+
+	/* Revert MIF CFG setting done on stop_phy */
+	mifcfg = readl(gp->regs + MIF_CFG);
+	mifcfg &= ~MIF_CFG_BBMODE;
+	writel(mifcfg, gp->regs + MIF_CFG);
+
+	if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE) {
+		int i;
+
+		/* Those delay sucks, the HW seem to love them though, I'll
+		 * serisouly consider breaking some locks here to be able
+		 * to schedule instead
+		 */
+		for (i = 0; i < 3; i++) {
+#ifdef CONFIG_PPC_PMAC
+			pmac_call_feature(PMAC_FTR_GMAC_PHY_RESET, gp->of_node, 0, 0);
+			msleep(20);
+#endif
+			/* Some PHYs used by apple have problem getting back to us,
+			 * we do an additional reset here
+			 */
+			sungem_phy_write(gp, MII_BMCR, BMCR_RESET);
+			msleep(20);
+			if (sungem_phy_read(gp, MII_BMCR) != 0xffff)
+				break;
+			if (i == 2)
+				netdev_warn(gp->dev, "GMAC PHY not responding !\n");
+		}
+	}
+
+	if (gp->pdev->vendor == PCI_VENDOR_ID_SUN &&
+	    gp->pdev->device == PCI_DEVICE_ID_SUN_GEM) {
+		u32 val;
+
+		/* Init datapath mode register. */
+		if (gp->phy_type == phy_mii_mdio0 ||
+		    gp->phy_type == phy_mii_mdio1) {
+			val = PCS_DMODE_MGM;
+		} else if (gp->phy_type == phy_serialink) {
+			val = PCS_DMODE_SM | PCS_DMODE_GMOE;
+		} else {
+			val = PCS_DMODE_ESM;
+		}
+
+		writel(val, gp->regs + PCS_DMODE);
+	}
+
+	if (gp->phy_type == phy_mii_mdio0 ||
+	    gp->phy_type == phy_mii_mdio1) {
+		/* Reset and detect MII PHY */
+		sungem_phy_probe(&gp->phy_mii, gp->mii_phy_addr);
+
+		/* Init PHY */
+		if (gp->phy_mii.def && gp->phy_mii.def->ops->init)
+			gp->phy_mii.def->ops->init(&gp->phy_mii);
+	} else {
+		gem_pcs_reset(gp);
+		gem_pcs_reinit_adv(gp);
+	}
+
+	/* Default aneg parameters */
+	gp->timer_ticks = 0;
+	gp->lstate = link_down;
+	netif_carrier_off(gp->dev);
+
+	/* Print things out */
+	if (gp->phy_type == phy_mii_mdio0 ||
+	    gp->phy_type == phy_mii_mdio1)
+		netdev_info(gp->dev, "Found %s PHY\n",
+			    gp->phy_mii.def ? gp->phy_mii.def->name : "no");
+
+	gem_begin_auto_negotiation(gp, NULL);
+}
+
+static void gem_init_dma(struct gem *gp)
+{
+	u64 desc_dma = (u64) gp->gblock_dvma;
+	u32 val;
+
+	val = (TXDMA_CFG_BASE | (0x7ff << 10) | TXDMA_CFG_PMODE);
+	writel(val, gp->regs + TXDMA_CFG);
+
+	writel(desc_dma >> 32, gp->regs + TXDMA_DBHI);
+	writel(desc_dma & 0xffffffff, gp->regs + TXDMA_DBLOW);
+	desc_dma += (INIT_BLOCK_TX_RING_SIZE * sizeof(struct gem_txd));
+
+	writel(0, gp->regs + TXDMA_KICK);
+
+	val = (RXDMA_CFG_BASE | (RX_OFFSET << 10) |
+	       (ETH_HLEN << 13) | RXDMA_CFG_FTHRESH_128);
+	writel(val, gp->regs + RXDMA_CFG);
+
+	writel(desc_dma >> 32, gp->regs + RXDMA_DBHI);
+	writel(desc_dma & 0xffffffff, gp->regs + RXDMA_DBLOW);
+
+	writel(RX_RING_SIZE - 4, gp->regs + RXDMA_KICK);
+
+	val  = (((gp->rx_pause_off / 64) << 0) & RXDMA_PTHRESH_OFF);
+	val |= (((gp->rx_pause_on / 64) << 12) & RXDMA_PTHRESH_ON);
+	writel(val, gp->regs + RXDMA_PTHRESH);
+
+	if (readl(gp->regs + GREG_BIFCFG) & GREG_BIFCFG_M66EN)
+		writel(((5 & RXDMA_BLANK_IPKTS) |
+			((8 << 12) & RXDMA_BLANK_ITIME)),
+		       gp->regs + RXDMA_BLANK);
+	else
+		writel(((5 & RXDMA_BLANK_IPKTS) |
+			((4 << 12) & RXDMA_BLANK_ITIME)),
+		       gp->regs + RXDMA_BLANK);
+}
+
+static u32 gem_setup_multicast(struct gem *gp)
+{
+	u32 rxcfg = 0;
+	int i;
+
+	if ((gp->dev->flags & IFF_ALLMULTI) ||
+	    (netdev_mc_count(gp->dev) > 256)) {
+	    	for (i=0; i<16; i++)
+			writel(0xffff, gp->regs + MAC_HASH0 + (i << 2));
+		rxcfg |= MAC_RXCFG_HFE;
+	} else if (gp->dev->flags & IFF_PROMISC) {
+		rxcfg |= MAC_RXCFG_PROM;
+	} else {
+		u16 hash_table[16];
+		u32 crc;
+		struct netdev_hw_addr *ha;
+		int i;
+
+		memset(hash_table, 0, sizeof(hash_table));
+		netdev_for_each_mc_addr(ha, gp->dev) {
+			crc = ether_crc_le(6, ha->addr);
+			crc >>= 24;
+			hash_table[crc >> 4] |= 1 << (15 - (crc & 0xf));
+		}
+	    	for (i=0; i<16; i++)
+			writel(hash_table[i], gp->regs + MAC_HASH0 + (i << 2));
+		rxcfg |= MAC_RXCFG_HFE;
+	}
+
+	return rxcfg;
+}
+
+static void gem_init_mac(struct gem *gp)
+{
+	unsigned char *e = &gp->dev->dev_addr[0];
+
+	writel(0x1bf0, gp->regs + MAC_SNDPAUSE);
+
+	writel(0x00, gp->regs + MAC_IPG0);
+	writel(0x08, gp->regs + MAC_IPG1);
+	writel(0x04, gp->regs + MAC_IPG2);
+	writel(0x40, gp->regs + MAC_STIME);
+	writel(0x40, gp->regs + MAC_MINFSZ);
+
+	/* Ethernet payload + header + FCS + optional VLAN tag. */
+	writel(0x20000000 | (gp->rx_buf_sz + 4), gp->regs + MAC_MAXFSZ);
+
+	writel(0x07, gp->regs + MAC_PASIZE);
+	writel(0x04, gp->regs + MAC_JAMSIZE);
+	writel(0x10, gp->regs + MAC_ATTLIM);
+	writel(0x8808, gp->regs + MAC_MCTYPE);
+
+	writel((e[5] | (e[4] << 8)) & 0x3ff, gp->regs + MAC_RANDSEED);
+
+	writel((e[4] << 8) | e[5], gp->regs + MAC_ADDR0);
+	writel((e[2] << 8) | e[3], gp->regs + MAC_ADDR1);
+	writel((e[0] << 8) | e[1], gp->regs + MAC_ADDR2);
+
+	writel(0, gp->regs + MAC_ADDR3);
+	writel(0, gp->regs + MAC_ADDR4);
+	writel(0, gp->regs + MAC_ADDR5);
+
+	writel(0x0001, gp->regs + MAC_ADDR6);
+	writel(0xc200, gp->regs + MAC_ADDR7);
+	writel(0x0180, gp->regs + MAC_ADDR8);
+
+	writel(0, gp->regs + MAC_AFILT0);
+	writel(0, gp->regs + MAC_AFILT1);
+	writel(0, gp->regs + MAC_AFILT2);
+	writel(0, gp->regs + MAC_AF21MSK);
+	writel(0, gp->regs + MAC_AF0MSK);
+
+	gp->mac_rx_cfg = gem_setup_multicast(gp);
+#ifdef STRIP_FCS
+	gp->mac_rx_cfg |= MAC_RXCFG_SFCS;
+#endif
+	writel(0, gp->regs + MAC_NCOLL);
+	writel(0, gp->regs + MAC_FASUCC);
+	writel(0, gp->regs + MAC_ECOLL);
+	writel(0, gp->regs + MAC_LCOLL);
+	writel(0, gp->regs + MAC_DTIMER);
+	writel(0, gp->regs + MAC_PATMPS);
+	writel(0, gp->regs + MAC_RFCTR);
+	writel(0, gp->regs + MAC_LERR);
+	writel(0, gp->regs + MAC_AERR);
+	writel(0, gp->regs + MAC_FCSERR);
+	writel(0, gp->regs + MAC_RXCVERR);
+
+	/* Clear RX/TX/MAC/XIF config, we will set these up and enable
+	 * them once a link is established.
+	 */
+	writel(0, gp->regs + MAC_TXCFG);
+	writel(gp->mac_rx_cfg, gp->regs + MAC_RXCFG);
+	writel(0, gp->regs + MAC_MCCFG);
+	writel(0, gp->regs + MAC_XIFCFG);
+
+	/* Setup MAC interrupts.  We want to get all of the interesting
+	 * counter expiration events, but we do not want to hear about
+	 * normal rx/tx as the DMA engine tells us that.
+	 */
+	writel(MAC_TXSTAT_XMIT, gp->regs + MAC_TXMASK);
+	writel(MAC_RXSTAT_RCV, gp->regs + MAC_RXMASK);
+
+	/* Don't enable even the PAUSE interrupts for now, we
+	 * make no use of those events other than to record them.
+	 */
+	writel(0xffffffff, gp->regs + MAC_MCMASK);
+
+	/* Don't enable GEM's WOL in normal operations
+	 */
+	if (gp->has_wol)
+		writel(0, gp->regs + WOL_WAKECSR);
+}
+
+static void gem_init_pause_thresholds(struct gem *gp)
+{
+       	u32 cfg;
+
+	/* Calculate pause thresholds.  Setting the OFF threshold to the
+	 * full RX fifo size effectively disables PAUSE generation which
+	 * is what we do for 10/100 only GEMs which have FIFOs too small
+	 * to make real gains from PAUSE.
+	 */
+	if (gp->rx_fifo_sz <= (2 * 1024)) {
+		gp->rx_pause_off = gp->rx_pause_on = gp->rx_fifo_sz;
+	} else {
+		int max_frame = (gp->rx_buf_sz + 4 + 64) & ~63;
+		int off = (gp->rx_fifo_sz - (max_frame * 2));
+		int on = off - max_frame;
+
+		gp->rx_pause_off = off;
+		gp->rx_pause_on = on;
+	}
+
+
+	/* Configure the chip "burst" DMA mode & enable some
+	 * HW bug fixes on Apple version
+	 */
+       	cfg  = 0;
+       	if (gp->pdev->vendor == PCI_VENDOR_ID_APPLE)
+		cfg |= GREG_CFG_RONPAULBIT | GREG_CFG_ENBUG2FIX;
+#if !defined(CONFIG_SPARC64) && !defined(CONFIG_ALPHA)
+       	cfg |= GREG_CFG_IBURST;
+#endif
+       	cfg |= ((31 << 1) & GREG_CFG_TXDMALIM);
+       	cfg |= ((31 << 6) & GREG_CFG_RXDMALIM);
+       	writel(cfg, gp->regs + GREG_CFG);
+
+	/* If Infinite Burst didn't stick, then use different
+	 * thresholds (and Apple bug fixes don't exist)
+	 */
+	if (!(readl(gp->regs + GREG_CFG) & GREG_CFG_IBURST)) {
+		cfg = ((2 << 1) & GREG_CFG_TXDMALIM);
+		cfg |= ((8 << 6) & GREG_CFG_RXDMALIM);
+		writel(cfg, gp->regs + GREG_CFG);
+	}
+}
+
+static int gem_check_invariants(struct gem *gp)
+{
+	struct pci_dev *pdev = gp->pdev;
+	u32 mif_cfg;
+
+	/* On Apple's sungem, we can't rely on registers as the chip
+	 * was been powered down by the firmware. The PHY is looked
+	 * up later on.
+	 */
+	if (pdev->vendor == PCI_VENDOR_ID_APPLE) {
+		gp->phy_type = phy_mii_mdio0;
+		gp->tx_fifo_sz = readl(gp->regs + TXDMA_FSZ) * 64;
+		gp->rx_fifo_sz = readl(gp->regs + RXDMA_FSZ) * 64;
+		gp->swrst_base = 0;
+
+		mif_cfg = readl(gp->regs + MIF_CFG);
+		mif_cfg &= ~(MIF_CFG_PSELECT|MIF_CFG_POLL|MIF_CFG_BBMODE|MIF_CFG_MDI1);
+		mif_cfg |= MIF_CFG_MDI0;
+		writel(mif_cfg, gp->regs + MIF_CFG);
+		writel(PCS_DMODE_MGM, gp->regs + PCS_DMODE);
+		writel(MAC_XIFCFG_OE, gp->regs + MAC_XIFCFG);
+
+		/* We hard-code the PHY address so we can properly bring it out of
+		 * reset later on, we can't really probe it at this point, though
+		 * that isn't an issue.
+		 */
+		if (gp->pdev->device == PCI_DEVICE_ID_APPLE_K2_GMAC)
+			gp->mii_phy_addr = 1;
+		else
+			gp->mii_phy_addr = 0;
+
+		return 0;
+	}
+
+	mif_cfg = readl(gp->regs + MIF_CFG);
+
+	if (pdev->vendor == PCI_VENDOR_ID_SUN &&
+	    pdev->device == PCI_DEVICE_ID_SUN_RIO_GEM) {
+		/* One of the MII PHYs _must_ be present
+		 * as this chip has no gigabit PHY.
+		 */
+		if ((mif_cfg & (MIF_CFG_MDI0 | MIF_CFG_MDI1)) == 0) {
+			pr_err("RIO GEM lacks MII phy, mif_cfg[%08x]\n",
+			       mif_cfg);
+			return -1;
+		}
+	}
+
+	/* Determine initial PHY interface type guess.  MDIO1 is the
+	 * external PHY and thus takes precedence over MDIO0.
+	 */
+
+	if (mif_cfg & MIF_CFG_MDI1) {
+		gp->phy_type = phy_mii_mdio1;
+		mif_cfg |= MIF_CFG_PSELECT;
+		writel(mif_cfg, gp->regs + MIF_CFG);
+	} else if (mif_cfg & MIF_CFG_MDI0) {
+		gp->phy_type = phy_mii_mdio0;
+		mif_cfg &= ~MIF_CFG_PSELECT;
+		writel(mif_cfg, gp->regs + MIF_CFG);
+	} else {
+#ifdef CONFIG_SPARC
+		const char *p;
+
+		p = of_get_property(gp->of_node, "shared-pins", NULL);
+		if (p && !strcmp(p, "serdes"))
+			gp->phy_type = phy_serdes;
+		else
+#endif
+			gp->phy_type = phy_serialink;
+	}
+	if (gp->phy_type == phy_mii_mdio1 ||
+	    gp->phy_type == phy_mii_mdio0) {
+		int i;
+
+		for (i = 0; i < 32; i++) {
+			gp->mii_phy_addr = i;
+			if (sungem_phy_read(gp, MII_BMCR) != 0xffff)
+				break;
+		}
+		if (i == 32) {
+			if (pdev->device != PCI_DEVICE_ID_SUN_GEM) {
+				pr_err("RIO MII phy will not respond\n");
+				return -1;
+			}
+			gp->phy_type = phy_serdes;
+		}
+	}
+
+	/* Fetch the FIFO configurations now too. */
+	gp->tx_fifo_sz = readl(gp->regs + TXDMA_FSZ) * 64;
+	gp->rx_fifo_sz = readl(gp->regs + RXDMA_FSZ) * 64;
+
+	if (pdev->vendor == PCI_VENDOR_ID_SUN) {
+		if (pdev->device == PCI_DEVICE_ID_SUN_GEM) {
+			if (gp->tx_fifo_sz != (9 * 1024) ||
+			    gp->rx_fifo_sz != (20 * 1024)) {
+				pr_err("GEM has bogus fifo sizes tx(%d) rx(%d)\n",
+				       gp->tx_fifo_sz, gp->rx_fifo_sz);
+				return -1;
+			}
+			gp->swrst_base = 0;
+		} else {
+			if (gp->tx_fifo_sz != (2 * 1024) ||
+			    gp->rx_fifo_sz != (2 * 1024)) {
+				pr_err("RIO GEM has bogus fifo sizes tx(%d) rx(%d)\n",
+				       gp->tx_fifo_sz, gp->rx_fifo_sz);
+				return -1;
+			}
+			gp->swrst_base = (64 / 4) << GREG_SWRST_CACHE_SHIFT;
+		}
+	}
+
+	return 0;
+}
+
+static void gem_reinit_chip(struct gem *gp)
+{
+	/* Reset the chip */
+	gem_reset(gp);
+
+	/* Make sure ints are disabled */
+	gem_disable_ints(gp);
+
+	/* Allocate & setup ring buffers */
+	gem_init_rings(gp);
+
+	/* Configure pause thresholds */
+	gem_init_pause_thresholds(gp);
+
+	/* Init DMA & MAC engines */
+	gem_init_dma(gp);
+	gem_init_mac(gp);
+}
+
+
+static void gem_stop_phy(struct gem *gp, int wol)
+{
+	u32 mifcfg;
+
+	/* Let the chip settle down a bit, it seems that helps
+	 * for sleep mode on some models
+	 */
+	msleep(10);
+
+	/* Make sure we aren't polling PHY status change. We
+	 * don't currently use that feature though
+	 */
+	mifcfg = readl(gp->regs + MIF_CFG);
+	mifcfg &= ~MIF_CFG_POLL;
+	writel(mifcfg, gp->regs + MIF_CFG);
+
+	if (wol && gp->has_wol) {
+		unsigned char *e = &gp->dev->dev_addr[0];
+		u32 csr;
+
+		/* Setup wake-on-lan for MAGIC packet */
+		writel(MAC_RXCFG_HFE | MAC_RXCFG_SFCS | MAC_RXCFG_ENAB,
+		       gp->regs + MAC_RXCFG);
+		writel((e[4] << 8) | e[5], gp->regs + WOL_MATCH0);
+		writel((e[2] << 8) | e[3], gp->regs + WOL_MATCH1);
+		writel((e[0] << 8) | e[1], gp->regs + WOL_MATCH2);
+
+		writel(WOL_MCOUNT_N | WOL_MCOUNT_M, gp->regs + WOL_MCOUNT);
+		csr = WOL_WAKECSR_ENABLE;
+		if ((readl(gp->regs + MAC_XIFCFG) & MAC_XIFCFG_GMII) == 0)
+			csr |= WOL_WAKECSR_MII;
+		writel(csr, gp->regs + WOL_WAKECSR);
+	} else {
+		writel(0, gp->regs + MAC_RXCFG);
+		(void)readl(gp->regs + MAC_RXCFG);
+		/* Machine sleep will die in strange ways if we
+		 * dont wait a bit here, looks like the chip takes
+		 * some time to really shut down
+		 */
+		msleep(10);
+	}
+
+	writel(0, gp->regs + MAC_TXCFG);
+	writel(0, gp->regs + MAC_XIFCFG);
+	writel(0, gp->regs + TXDMA_CFG);
+	writel(0, gp->regs + RXDMA_CFG);
+
+	if (!wol) {
+		gem_reset(gp);
+		writel(MAC_TXRST_CMD, gp->regs + MAC_TXRST);
+		writel(MAC_RXRST_CMD, gp->regs + MAC_RXRST);
+
+		if (found_mii_phy(gp) && gp->phy_mii.def->ops->suspend)
+			gp->phy_mii.def->ops->suspend(&gp->phy_mii);
+
+		/* According to Apple, we must set the MDIO pins to this begnign
+		 * state or we may 1) eat more current, 2) damage some PHYs
+		 */
+		writel(mifcfg | MIF_CFG_BBMODE, gp->regs + MIF_CFG);
+		writel(0, gp->regs + MIF_BBCLK);
+		writel(0, gp->regs + MIF_BBDATA);
+		writel(0, gp->regs + MIF_BBOENAB);
+		writel(MAC_XIFCFG_GMII | MAC_XIFCFG_LBCK, gp->regs + MAC_XIFCFG);
+		(void) readl(gp->regs + MAC_XIFCFG);
+	}
+}
+
+static int gem_do_start(struct net_device *dev)
+{
+	struct gem *gp = netdev_priv(dev);
+	int rc;
+
+	/* Enable the cell */
+	gem_get_cell(gp);
+
+	/* Make sure PCI access and bus master are enabled */
+	rc = pci_enable_device(gp->pdev);
+	if (rc) {
+		netdev_err(dev, "Failed to enable chip on PCI bus !\n");
+
+		/* Put cell and forget it for now, it will be considered as
+		 * still asleep, a new sleep cycle may bring it back
+		 */
+		gem_put_cell(gp);
+		return -ENXIO;
+	}
+	pci_set_master(gp->pdev);
+
+	/* Init & setup chip hardware */
+	gem_reinit_chip(gp);
+
+	/* An interrupt might come in handy */
+	rc = request_irq(gp->pdev->irq, gem_interrupt,
+			 IRQF_SHARED, dev->name, (void *)dev);
+	if (rc) {
+		netdev_err(dev, "failed to request irq !\n");
+
+		gem_reset(gp);
+		gem_clean_rings(gp);
+		gem_put_cell(gp);
+		return rc;
+	}
+
+	/* Mark us as attached again if we come from resume(), this has
+	 * no effect if we weren't detached and needs to be done now.
+	 */
+	netif_device_attach(dev);
+
+	/* Restart NAPI & queues */
+	gem_netif_start(gp);
+
+	/* Detect & init PHY, start autoneg etc... this will
+	 * eventually result in starting DMA operations when
+	 * the link is up
+	 */
+	gem_init_phy(gp);
+
+	return 0;
+}
+
+static void gem_do_stop(struct net_device *dev, int wol)
+{
+	struct gem *gp = netdev_priv(dev);
+
+	/* Stop NAPI and stop tx queue */
+	gem_netif_stop(gp);
+
+	/* Make sure ints are disabled. We don't care about
+	 * synchronizing as NAPI is disabled, thus a stray
+	 * interrupt will do nothing bad (our irq handler
+	 * just schedules NAPI)
+	 */
+	gem_disable_ints(gp);
+
+	/* Stop the link timer */
+	del_timer_sync(&gp->link_timer);
+
+	/* We cannot cancel the reset task while holding the
+	 * rtnl lock, we'd get an A->B / B->A deadlock stituation
+	 * if we did. This is not an issue however as the reset
+	 * task is synchronized vs. us (rtnl_lock) and will do
+	 * nothing if the device is down or suspended. We do
+	 * still clear reset_task_pending to avoid a spurrious
+	 * reset later on in case we do resume before it gets
+	 * scheduled.
+	 */
+	gp->reset_task_pending = 0;
+
+	/* If we are going to sleep with WOL */
+	gem_stop_dma(gp);
+	msleep(10);
+	if (!wol)
+		gem_reset(gp);
+	msleep(10);
+
+	/* Get rid of rings */
+	gem_clean_rings(gp);
+
+	/* No irq needed anymore */
+	free_irq(gp->pdev->irq, (void *) dev);
+
+	/* Shut the PHY down eventually and setup WOL */
+	gem_stop_phy(gp, wol);
+
+	/* Make sure bus master is disabled */
+	pci_disable_device(gp->pdev);
+
+	/* Cell not needed neither if no WOL */
+	if (!wol)
+		gem_put_cell(gp);
+}
+
+static void gem_reset_task(struct work_struct *work)
+{
+	struct gem *gp = container_of(work, struct gem, reset_task);
+
+	/* Lock out the network stack (essentially shield ourselves
+	 * against a racing open, close, control call, or suspend
+	 */
+	rtnl_lock();
+
+	/* Skip the reset task if suspended or closed, or if it's
+	 * been cancelled by gem_do_stop (see comment there)
+	 */
+	if (!netif_device_present(gp->dev) ||
+	    !netif_running(gp->dev) ||
+	    !gp->reset_task_pending) {
+		rtnl_unlock();
+		return;
+	}
+
+	/* Stop the link timer */
+	del_timer_sync(&gp->link_timer);
+
+	/* Stop NAPI and tx */
+	gem_netif_stop(gp);
+
+	/* Reset the chip & rings */
+	gem_reinit_chip(gp);
+	if (gp->lstate == link_up)
+		gem_set_link_modes(gp);
+
+	/* Restart NAPI and Tx */
+	gem_netif_start(gp);
+
+	/* We are back ! */
+	gp->reset_task_pending = 0;
+
+	/* If the link is not up, restart autoneg, else restart the
+	 * polling timer
+	 */
+	if (gp->lstate != link_up)
+		gem_begin_auto_negotiation(gp, NULL);
+	else
+		mod_timer(&gp->link_timer, jiffies + ((12 * HZ) / 10));
+
+	rtnl_unlock();
+}
+
+static int gem_open(struct net_device *dev)
+{
+	/* We allow open while suspended, we just do nothing,
+	 * the chip will be initialized in resume()
+	 */
+	if (netif_device_present(dev))
+		return gem_do_start(dev);
+	return 0;
+}
+
+static int gem_close(struct net_device *dev)
+{
+	if (netif_device_present(dev))
+		gem_do_stop(dev, 0);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int gem_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct gem *gp = netdev_priv(dev);
+
+	/* Lock the network stack first to avoid racing with open/close,
+	 * reset task and setting calls
+	 */
+	rtnl_lock();
+
+	/* Not running, mark ourselves non-present, no need for
+	 * a lock here
+	 */
+	if (!netif_running(dev)) {
+		netif_device_detach(dev);
+		rtnl_unlock();
+		return 0;
+	}
+	netdev_info(dev, "suspending, WakeOnLan %s\n",
+		    (gp->wake_on_lan && netif_running(dev)) ?
+		    "enabled" : "disabled");
+
+	/* Tell the network stack we're gone. gem_do_stop() below will
+	 * synchronize with TX, stop NAPI etc...
+	 */
+	netif_device_detach(dev);
+
+	/* Switch off chip, remember WOL setting */
+	gp->asleep_wol = !!gp->wake_on_lan;
+	gem_do_stop(dev, gp->asleep_wol);
+
+	/* Unlock the network stack */
+	rtnl_unlock();
+
+	return 0;
+}
+
+static int gem_resume(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct gem *gp = netdev_priv(dev);
+
+	/* See locking comment in gem_suspend */
+	rtnl_lock();
+
+	/* Not running, mark ourselves present, no need for
+	 * a lock here
+	 */
+	if (!netif_running(dev)) {
+		netif_device_attach(dev);
+		rtnl_unlock();
+		return 0;
+	}
+
+	/* Restart chip. If that fails there isn't much we can do, we
+	 * leave things stopped.
+	 */
+	gem_do_start(dev);
+
+	/* If we had WOL enabled, the cell clock was never turned off during
+	 * sleep, so we end up beeing unbalanced. Fix that here
+	 */
+	if (gp->asleep_wol)
+		gem_put_cell(gp);
+
+	/* Unlock the network stack */
+	rtnl_unlock();
+
+	return 0;
+}
+#endif /* CONFIG_PM */
+
+static struct net_device_stats *gem_get_stats(struct net_device *dev)
+{
+	struct gem *gp = netdev_priv(dev);
+
+	/* I have seen this being called while the PM was in progress,
+	 * so we shield against this. Let's also not poke at registers
+	 * while the reset task is going on.
+	 *
+	 * TODO: Move stats collection elsewhere (link timer ?) and
+	 * make this a nop to avoid all those synchro issues
+	 */
+	if (!netif_device_present(dev) || !netif_running(dev))
+		goto bail;
+
+	/* Better safe than sorry... */
+	if (WARN_ON(!gp->cell_enabled))
+		goto bail;
+
+	dev->stats.rx_crc_errors += readl(gp->regs + MAC_FCSERR);
+	writel(0, gp->regs + MAC_FCSERR);
+
+	dev->stats.rx_frame_errors += readl(gp->regs + MAC_AERR);
+	writel(0, gp->regs + MAC_AERR);
+
+	dev->stats.rx_length_errors += readl(gp->regs + MAC_LERR);
+	writel(0, gp->regs + MAC_LERR);
+
+	dev->stats.tx_aborted_errors += readl(gp->regs + MAC_ECOLL);
+	dev->stats.collisions +=
+		(readl(gp->regs + MAC_ECOLL) + readl(gp->regs + MAC_LCOLL));
+	writel(0, gp->regs + MAC_ECOLL);
+	writel(0, gp->regs + MAC_LCOLL);
+ bail:
+	return &dev->stats;
+}
+
+static int gem_set_mac_address(struct net_device *dev, void *addr)
+{
+	struct sockaddr *macaddr = (struct sockaddr *) addr;
+	struct gem *gp = netdev_priv(dev);
+	unsigned char *e = &dev->dev_addr[0];
+
+	if (!is_valid_ether_addr(macaddr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	memcpy(dev->dev_addr, macaddr->sa_data, dev->addr_len);
+
+	/* We'll just catch it later when the device is up'd or resumed */
+	if (!netif_running(dev) || !netif_device_present(dev))
+		return 0;
+
+	/* Better safe than sorry... */
+	if (WARN_ON(!gp->cell_enabled))
+		return 0;
+
+	writel((e[4] << 8) | e[5], gp->regs + MAC_ADDR0);
+	writel((e[2] << 8) | e[3], gp->regs + MAC_ADDR1);
+	writel((e[0] << 8) | e[1], gp->regs + MAC_ADDR2);
+
+	return 0;
+}
+
+static void gem_set_multicast(struct net_device *dev)
+{
+	struct gem *gp = netdev_priv(dev);
+	u32 rxcfg, rxcfg_new;
+	int limit = 10000;
+
+	if (!netif_running(dev) || !netif_device_present(dev))
+		return;
+
+	/* Better safe than sorry... */
+	if (gp->reset_task_pending || WARN_ON(!gp->cell_enabled))
+		return;
+
+	rxcfg = readl(gp->regs + MAC_RXCFG);
+	rxcfg_new = gem_setup_multicast(gp);
+#ifdef STRIP_FCS
+	rxcfg_new |= MAC_RXCFG_SFCS;
+#endif
+	gp->mac_rx_cfg = rxcfg_new;
+
+	writel(rxcfg & ~MAC_RXCFG_ENAB, gp->regs + MAC_RXCFG);
+	while (readl(gp->regs + MAC_RXCFG) & MAC_RXCFG_ENAB) {
+		if (!limit--)
+			break;
+		udelay(10);
+	}
+
+	rxcfg &= ~(MAC_RXCFG_PROM | MAC_RXCFG_HFE);
+	rxcfg |= rxcfg_new;
+
+	writel(rxcfg, gp->regs + MAC_RXCFG);
+}
+
+/* Jumbo-grams don't seem to work :-( */
+#define GEM_MIN_MTU	ETH_MIN_MTU
+#if 1
+#define GEM_MAX_MTU	ETH_DATA_LEN
+#else
+#define GEM_MAX_MTU	9000
+#endif
+
+static int gem_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct gem *gp = netdev_priv(dev);
+
+	dev->mtu = new_mtu;
+
+	/* We'll just catch it later when the device is up'd or resumed */
+	if (!netif_running(dev) || !netif_device_present(dev))
+		return 0;
+
+	/* Better safe than sorry... */
+	if (WARN_ON(!gp->cell_enabled))
+		return 0;
+
+	gem_netif_stop(gp);
+	gem_reinit_chip(gp);
+	if (gp->lstate == link_up)
+		gem_set_link_modes(gp);
+	gem_netif_start(gp);
+
+	return 0;
+}
+
+static void gem_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	struct gem *gp = netdev_priv(dev);
+
+	strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
+	strlcpy(info->version, DRV_VERSION, sizeof(info->version));
+	strlcpy(info->bus_info, pci_name(gp->pdev), sizeof(info->bus_info));
+}
+
+static int gem_get_link_ksettings(struct net_device *dev,
+				  struct ethtool_link_ksettings *cmd)
+{
+	struct gem *gp = netdev_priv(dev);
+	u32 supported, advertising;
+
+	if (gp->phy_type == phy_mii_mdio0 ||
+	    gp->phy_type == phy_mii_mdio1) {
+		if (gp->phy_mii.def)
+			supported = gp->phy_mii.def->features;
+		else
+			supported = (SUPPORTED_10baseT_Half |
+					  SUPPORTED_10baseT_Full);
+
+		/* XXX hardcoded stuff for now */
+		cmd->base.port = PORT_MII;
+		cmd->base.phy_address = 0; /* XXX fixed PHYAD */
+
+		/* Return current PHY settings */
+		cmd->base.autoneg = gp->want_autoneg;
+		cmd->base.speed = gp->phy_mii.speed;
+		cmd->base.duplex = gp->phy_mii.duplex;
+		advertising = gp->phy_mii.advertising;
+
+		/* If we started with a forced mode, we don't have a default
+		 * advertise set, we need to return something sensible so
+		 * userland can re-enable autoneg properly.
+		 */
+		if (advertising == 0)
+			advertising = supported;
+	} else { // XXX PCS ?
+		supported =
+			(SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
+			 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
+			 SUPPORTED_Autoneg);
+		advertising = supported;
+		cmd->base.speed = 0;
+		cmd->base.duplex = 0;
+		cmd->base.port = 0;
+		cmd->base.phy_address = 0;
+		cmd->base.autoneg = 0;
+
+		/* serdes means usually a Fibre connector, with most fixed */
+		if (gp->phy_type == phy_serdes) {
+			cmd->base.port = PORT_FIBRE;
+			supported = (SUPPORTED_1000baseT_Half |
+				SUPPORTED_1000baseT_Full |
+				SUPPORTED_FIBRE | SUPPORTED_Autoneg |
+				SUPPORTED_Pause | SUPPORTED_Asym_Pause);
+			advertising = supported;
+			if (gp->lstate == link_up)
+				cmd->base.speed = SPEED_1000;
+			cmd->base.duplex = DUPLEX_FULL;
+			cmd->base.autoneg = 1;
+		}
+	}
+
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
+						supported);
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
+						advertising);
+
+	return 0;
+}
+
+static int gem_set_link_ksettings(struct net_device *dev,
+				  const struct ethtool_link_ksettings *cmd)
+{
+	struct gem *gp = netdev_priv(dev);
+	u32 speed = cmd->base.speed;
+	u32 advertising;
+
+	ethtool_convert_link_mode_to_legacy_u32(&advertising,
+						cmd->link_modes.advertising);
+
+	/* Verify the settings we care about. */
+	if (cmd->base.autoneg != AUTONEG_ENABLE &&
+	    cmd->base.autoneg != AUTONEG_DISABLE)
+		return -EINVAL;
+
+	if (cmd->base.autoneg == AUTONEG_ENABLE &&
+	    advertising == 0)
+		return -EINVAL;
+
+	if (cmd->base.autoneg == AUTONEG_DISABLE &&
+	    ((speed != SPEED_1000 &&
+	      speed != SPEED_100 &&
+	      speed != SPEED_10) ||
+	     (cmd->base.duplex != DUPLEX_HALF &&
+	      cmd->base.duplex != DUPLEX_FULL)))
+		return -EINVAL;
+
+	/* Apply settings and restart link process. */
+	if (netif_device_present(gp->dev)) {
+		del_timer_sync(&gp->link_timer);
+		gem_begin_auto_negotiation(gp, cmd);
+	}
+
+	return 0;
+}
+
+static int gem_nway_reset(struct net_device *dev)
+{
+	struct gem *gp = netdev_priv(dev);
+
+	if (!gp->want_autoneg)
+		return -EINVAL;
+
+	/* Restart link process  */
+	if (netif_device_present(gp->dev)) {
+		del_timer_sync(&gp->link_timer);
+		gem_begin_auto_negotiation(gp, NULL);
+	}
+
+	return 0;
+}
+
+static u32 gem_get_msglevel(struct net_device *dev)
+{
+	struct gem *gp = netdev_priv(dev);
+	return gp->msg_enable;
+}
+
+static void gem_set_msglevel(struct net_device *dev, u32 value)
+{
+	struct gem *gp = netdev_priv(dev);
+	gp->msg_enable = value;
+}
+
+
+/* Add more when I understand how to program the chip */
+/* like WAKE_UCAST | WAKE_MCAST | WAKE_BCAST */
+
+#define WOL_SUPPORTED_MASK	(WAKE_MAGIC)
+
+static void gem_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+	struct gem *gp = netdev_priv(dev);
+
+	/* Add more when I understand how to program the chip */
+	if (gp->has_wol) {
+		wol->supported = WOL_SUPPORTED_MASK;
+		wol->wolopts = gp->wake_on_lan;
+	} else {
+		wol->supported = 0;
+		wol->wolopts = 0;
+	}
+}
+
+static int gem_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+	struct gem *gp = netdev_priv(dev);
+
+	if (!gp->has_wol)
+		return -EOPNOTSUPP;
+	gp->wake_on_lan = wol->wolopts & WOL_SUPPORTED_MASK;
+	return 0;
+}
+
+static const struct ethtool_ops gem_ethtool_ops = {
+	.get_drvinfo		= gem_get_drvinfo,
+	.get_link		= ethtool_op_get_link,
+	.nway_reset		= gem_nway_reset,
+	.get_msglevel		= gem_get_msglevel,
+	.set_msglevel		= gem_set_msglevel,
+	.get_wol		= gem_get_wol,
+	.set_wol		= gem_set_wol,
+	.get_link_ksettings	= gem_get_link_ksettings,
+	.set_link_ksettings	= gem_set_link_ksettings,
+};
+
+static int gem_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+	struct gem *gp = netdev_priv(dev);
+	struct mii_ioctl_data *data = if_mii(ifr);
+	int rc = -EOPNOTSUPP;
+
+	/* For SIOCGMIIREG and SIOCSMIIREG the core checks for us that
+	 * netif_device_present() is true and holds rtnl_lock for us
+	 * so we have nothing to worry about
+	 */
+
+	switch (cmd) {
+	case SIOCGMIIPHY:		/* Get address of MII PHY in use. */
+		data->phy_id = gp->mii_phy_addr;
+		/* Fallthrough... */
+
+	case SIOCGMIIREG:		/* Read MII PHY register. */
+		data->val_out = __sungem_phy_read(gp, data->phy_id & 0x1f,
+					   data->reg_num & 0x1f);
+		rc = 0;
+		break;
+
+	case SIOCSMIIREG:		/* Write MII PHY register. */
+		__sungem_phy_write(gp, data->phy_id & 0x1f, data->reg_num & 0x1f,
+			    data->val_in);
+		rc = 0;
+		break;
+	}
+	return rc;
+}
+
+#if (!defined(CONFIG_SPARC) && !defined(CONFIG_PPC_PMAC))
+/* Fetch MAC address from vital product data of PCI ROM. */
+static int find_eth_addr_in_vpd(void __iomem *rom_base, int len, unsigned char *dev_addr)
+{
+	int this_offset;
+
+	for (this_offset = 0x20; this_offset < len; this_offset++) {
+		void __iomem *p = rom_base + this_offset;
+		int i;
+
+		if (readb(p + 0) != 0x90 ||
+		    readb(p + 1) != 0x00 ||
+		    readb(p + 2) != 0x09 ||
+		    readb(p + 3) != 0x4e ||
+		    readb(p + 4) != 0x41 ||
+		    readb(p + 5) != 0x06)
+			continue;
+
+		this_offset += 6;
+		p += 6;
+
+		for (i = 0; i < 6; i++)
+			dev_addr[i] = readb(p + i);
+		return 1;
+	}
+	return 0;
+}
+
+static void get_gem_mac_nonobp(struct pci_dev *pdev, unsigned char *dev_addr)
+{
+	size_t size;
+	void __iomem *p = pci_map_rom(pdev, &size);
+
+	if (p) {
+			int found;
+
+		found = readb(p) == 0x55 &&
+			readb(p + 1) == 0xaa &&
+			find_eth_addr_in_vpd(p, (64 * 1024), dev_addr);
+		pci_unmap_rom(pdev, p);
+		if (found)
+			return;
+	}
+
+	/* Sun MAC prefix then 3 random bytes. */
+	dev_addr[0] = 0x08;
+	dev_addr[1] = 0x00;
+	dev_addr[2] = 0x20;
+	get_random_bytes(dev_addr + 3, 3);
+}
+#endif /* not Sparc and not PPC */
+
+static int gem_get_device_address(struct gem *gp)
+{
+#if defined(CONFIG_SPARC) || defined(CONFIG_PPC_PMAC)
+	struct net_device *dev = gp->dev;
+	const unsigned char *addr;
+
+	addr = of_get_property(gp->of_node, "local-mac-address", NULL);
+	if (addr == NULL) {
+#ifdef CONFIG_SPARC
+		addr = idprom->id_ethaddr;
+#else
+		printk("\n");
+		pr_err("%s: can't get mac-address\n", dev->name);
+		return -1;
+#endif
+	}
+	memcpy(dev->dev_addr, addr, ETH_ALEN);
+#else
+	get_gem_mac_nonobp(gp->pdev, gp->dev->dev_addr);
+#endif
+	return 0;
+}
+
+static void gem_remove_one(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+
+	if (dev) {
+		struct gem *gp = netdev_priv(dev);
+
+		unregister_netdev(dev);
+
+		/* Ensure reset task is truly gone */
+		cancel_work_sync(&gp->reset_task);
+
+		/* Free resources */
+		pci_free_consistent(pdev,
+				    sizeof(struct gem_init_block),
+				    gp->init_block,
+				    gp->gblock_dvma);
+		iounmap(gp->regs);
+		pci_release_regions(pdev);
+		free_netdev(dev);
+	}
+}
+
+static const struct net_device_ops gem_netdev_ops = {
+	.ndo_open		= gem_open,
+	.ndo_stop		= gem_close,
+	.ndo_start_xmit		= gem_start_xmit,
+	.ndo_get_stats		= gem_get_stats,
+	.ndo_set_rx_mode	= gem_set_multicast,
+	.ndo_do_ioctl		= gem_ioctl,
+	.ndo_tx_timeout		= gem_tx_timeout,
+	.ndo_change_mtu		= gem_change_mtu,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address    = gem_set_mac_address,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller    = gem_poll_controller,
+#endif
+};
+
+static int gem_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	unsigned long gemreg_base, gemreg_len;
+	struct net_device *dev;
+	struct gem *gp;
+	int err, pci_using_dac;
+
+	printk_once(KERN_INFO "%s", version);
+
+	/* Apple gmac note: during probe, the chip is powered up by
+	 * the arch code to allow the code below to work (and to let
+	 * the chip be probed on the config space. It won't stay powered
+	 * up until the interface is brought up however, so we can't rely
+	 * on register configuration done at this point.
+	 */
+	err = pci_enable_device(pdev);
+	if (err) {
+		pr_err("Cannot enable MMIO operation, aborting\n");
+		return err;
+	}
+	pci_set_master(pdev);
+
+	/* Configure DMA attributes. */
+
+	/* All of the GEM documentation states that 64-bit DMA addressing
+	 * is fully supported and should work just fine.  However the
+	 * front end for RIO based GEMs is different and only supports
+	 * 32-bit addressing.
+	 *
+	 * For now we assume the various PPC GEMs are 32-bit only as well.
+	 */
+	if (pdev->vendor == PCI_VENDOR_ID_SUN &&
+	    pdev->device == PCI_DEVICE_ID_SUN_GEM &&
+	    !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
+		pci_using_dac = 1;
+	} else {
+		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (err) {
+			pr_err("No usable DMA configuration, aborting\n");
+			goto err_disable_device;
+		}
+		pci_using_dac = 0;
+	}
+
+	gemreg_base = pci_resource_start(pdev, 0);
+	gemreg_len = pci_resource_len(pdev, 0);
+
+	if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) {
+		pr_err("Cannot find proper PCI device base address, aborting\n");
+		err = -ENODEV;
+		goto err_disable_device;
+	}
+
+	dev = alloc_etherdev(sizeof(*gp));
+	if (!dev) {
+		err = -ENOMEM;
+		goto err_disable_device;
+	}
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+	gp = netdev_priv(dev);
+
+	err = pci_request_regions(pdev, DRV_NAME);
+	if (err) {
+		pr_err("Cannot obtain PCI resources, aborting\n");
+		goto err_out_free_netdev;
+	}
+
+	gp->pdev = pdev;
+	gp->dev = dev;
+
+	gp->msg_enable = DEFAULT_MSG;
+
+	timer_setup(&gp->link_timer, gem_link_timer, 0);
+
+	INIT_WORK(&gp->reset_task, gem_reset_task);
+
+	gp->lstate = link_down;
+	gp->timer_ticks = 0;
+	netif_carrier_off(dev);
+
+	gp->regs = ioremap(gemreg_base, gemreg_len);
+	if (!gp->regs) {
+		pr_err("Cannot map device registers, aborting\n");
+		err = -EIO;
+		goto err_out_free_res;
+	}
+
+	/* On Apple, we want a reference to the Open Firmware device-tree
+	 * node. We use it for clock control.
+	 */
+#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_SPARC)
+	gp->of_node = pci_device_to_OF_node(pdev);
+#endif
+
+	/* Only Apple version supports WOL afaik */
+	if (pdev->vendor == PCI_VENDOR_ID_APPLE)
+		gp->has_wol = 1;
+
+	/* Make sure cell is enabled */
+	gem_get_cell(gp);
+
+	/* Make sure everything is stopped and in init state */
+	gem_reset(gp);
+
+	/* Fill up the mii_phy structure (even if we won't use it) */
+	gp->phy_mii.dev = dev;
+	gp->phy_mii.mdio_read = _sungem_phy_read;
+	gp->phy_mii.mdio_write = _sungem_phy_write;
+#ifdef CONFIG_PPC_PMAC
+	gp->phy_mii.platform_data = gp->of_node;
+#endif
+	/* By default, we start with autoneg */
+	gp->want_autoneg = 1;
+
+	/* Check fifo sizes, PHY type, etc... */
+	if (gem_check_invariants(gp)) {
+		err = -ENODEV;
+		goto err_out_iounmap;
+	}
+
+	/* It is guaranteed that the returned buffer will be at least
+	 * PAGE_SIZE aligned.
+	 */
+	gp->init_block = (struct gem_init_block *)
+		pci_alloc_consistent(pdev, sizeof(struct gem_init_block),
+				     &gp->gblock_dvma);
+	if (!gp->init_block) {
+		pr_err("Cannot allocate init block, aborting\n");
+		err = -ENOMEM;
+		goto err_out_iounmap;
+	}
+
+	err = gem_get_device_address(gp);
+	if (err)
+		goto err_out_free_consistent;
+
+	dev->netdev_ops = &gem_netdev_ops;
+	netif_napi_add(dev, &gp->napi, gem_poll, 64);
+	dev->ethtool_ops = &gem_ethtool_ops;
+	dev->watchdog_timeo = 5 * HZ;
+	dev->dma = 0;
+
+	/* Set that now, in case PM kicks in now */
+	pci_set_drvdata(pdev, dev);
+
+	/* We can do scatter/gather and HW checksum */
+	dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXCSUM;
+	dev->features = dev->hw_features;
+	if (pci_using_dac)
+		dev->features |= NETIF_F_HIGHDMA;
+
+	/* MTU range: 68 - 1500 (Jumbo mode is broken) */
+	dev->min_mtu = GEM_MIN_MTU;
+	dev->max_mtu = GEM_MAX_MTU;
+
+	/* Register with kernel */
+	if (register_netdev(dev)) {
+		pr_err("Cannot register net device, aborting\n");
+		err = -ENOMEM;
+		goto err_out_free_consistent;
+	}
+
+	/* Undo the get_cell with appropriate locking (we could use
+	 * ndo_init/uninit but that would be even more clumsy imho)
+	 */
+	rtnl_lock();
+	gem_put_cell(gp);
+	rtnl_unlock();
+
+	netdev_info(dev, "Sun GEM (PCI) 10/100/1000BaseT Ethernet %pM\n",
+		    dev->dev_addr);
+	return 0;
+
+err_out_free_consistent:
+	gem_remove_one(pdev);
+err_out_iounmap:
+	gem_put_cell(gp);
+	iounmap(gp->regs);
+
+err_out_free_res:
+	pci_release_regions(pdev);
+
+err_out_free_netdev:
+	free_netdev(dev);
+err_disable_device:
+	pci_disable_device(pdev);
+	return err;
+
+}
+
+
+static struct pci_driver gem_driver = {
+	.name		= GEM_MODULE_NAME,
+	.id_table	= gem_pci_tbl,
+	.probe		= gem_init_one,
+	.remove		= gem_remove_one,
+#ifdef CONFIG_PM
+	.suspend	= gem_suspend,
+	.resume		= gem_resume,
+#endif /* CONFIG_PM */
+};
+
+module_pci_driver(gem_driver);
diff --git a/drivers/net/ethernet/sun/sungem.h b/drivers/net/ethernet/sun/sungem.h
new file mode 100644
index 000000000..626302a9b
--- /dev/null
+++ b/drivers/net/ethernet/sun/sungem.h
@@ -0,0 +1,1028 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* $Id: sungem.h,v 1.10.2.4 2002/03/11 08:54:48 davem Exp $
+ * sungem.h: Definitions for Sun GEM ethernet driver.
+ *
+ * Copyright (C) 2000 David S. Miller (davem@redhat.com)
+ */
+
+#ifndef _SUNGEM_H
+#define _SUNGEM_H
+
+/* Global Registers */
+#define GREG_SEBSTATE	0x0000UL	/* SEB State Register		*/
+#define GREG_CFG	0x0004UL	/* Configuration Register	*/
+#define GREG_STAT	0x000CUL	/* Status Register		*/
+#define GREG_IMASK	0x0010UL	/* Interrupt Mask Register	*/
+#define GREG_IACK	0x0014UL	/* Interrupt ACK Register	*/
+#define GREG_STAT2	0x001CUL	/* Alias of GREG_STAT		*/
+#define GREG_PCIESTAT	0x1000UL	/* PCI Error Status Register	*/
+#define GREG_PCIEMASK	0x1004UL	/* PCI Error Mask Register	*/
+#define GREG_BIFCFG	0x1008UL	/* BIF Configuration Register	*/
+#define GREG_BIFDIAG	0x100CUL	/* BIF Diagnostics Register	*/
+#define GREG_SWRST	0x1010UL	/* Software Reset Register	*/
+
+/* Global SEB State Register */
+#define GREG_SEBSTATE_ARB	0x00000003	/* State of Arbiter		*/
+#define GREG_SEBSTATE_RXWON	0x00000004	/* RX won internal arbitration	*/
+
+/* Global Configuration Register */
+#define GREG_CFG_IBURST		0x00000001	/* Infinite Burst		*/
+#define GREG_CFG_TXDMALIM	0x0000003e	/* TX DMA grant limit		*/
+#define GREG_CFG_RXDMALIM	0x000007c0	/* RX DMA grant limit		*/
+#define GREG_CFG_RONPAULBIT	0x00000800	/* Use mem read multiple for PCI read
+						 * after infinite burst (Apple) */
+#define GREG_CFG_ENBUG2FIX	0x00001000	/* Fix Rx hang after overflow */
+
+/* Global Interrupt Status Register.
+ *
+ * Reading this register automatically clears bits 0 through 6.
+ * This auto-clearing does not occur when the alias at GREG_STAT2
+ * is read instead.  The rest of the interrupt bits only clear when
+ * the secondary interrupt status register corresponding to that
+ * bit is read (ie. if GREG_STAT_PCS is set, it will be cleared by
+ * reading PCS_ISTAT).
+ */
+#define GREG_STAT_TXINTME	0x00000001	/* TX INTME frame transferred	*/
+#define GREG_STAT_TXALL		0x00000002	/* All TX frames transferred	*/
+#define GREG_STAT_TXDONE	0x00000004	/* One TX frame transferred	*/
+#define GREG_STAT_RXDONE	0x00000010	/* One RX frame arrived		*/
+#define GREG_STAT_RXNOBUF	0x00000020	/* No free RX buffers available	*/
+#define GREG_STAT_RXTAGERR	0x00000040	/* RX tag framing is corrupt	*/
+#define GREG_STAT_PCS		0x00002000	/* PCS signalled interrupt	*/
+#define GREG_STAT_TXMAC		0x00004000	/* TX MAC signalled interrupt	*/
+#define GREG_STAT_RXMAC		0x00008000	/* RX MAC signalled interrupt	*/
+#define GREG_STAT_MAC		0x00010000	/* MAC Control signalled irq	*/
+#define GREG_STAT_MIF		0x00020000	/* MIF signalled interrupt	*/
+#define GREG_STAT_PCIERR	0x00040000	/* PCI Error interrupt		*/
+#define GREG_STAT_TXNR		0xfff80000	/* == TXDMA_TXDONE reg val	*/
+#define GREG_STAT_TXNR_SHIFT	19
+
+#define GREG_STAT_ABNORMAL	(GREG_STAT_RXNOBUF | GREG_STAT_RXTAGERR | \
+				 GREG_STAT_PCS | GREG_STAT_TXMAC | GREG_STAT_RXMAC | \
+				 GREG_STAT_MAC | GREG_STAT_MIF | GREG_STAT_PCIERR)
+
+#define GREG_STAT_NAPI		(GREG_STAT_TXALL  | GREG_STAT_TXINTME | \
+				 GREG_STAT_RXDONE | GREG_STAT_ABNORMAL)
+
+/* The layout of GREG_IMASK and GREG_IACK is identical to GREG_STAT.
+ * Bits set in GREG_IMASK will prevent that interrupt type from being
+ * signalled to the cpu.  GREG_IACK can be used to clear specific top-level
+ * interrupt conditions in GREG_STAT, ie. it only works for bits 0 through 6.
+ * Setting the bit will clear that interrupt, clear bits will have no effect
+ * on GREG_STAT.
+ */
+
+/* Global PCI Error Status Register */
+#define GREG_PCIESTAT_BADACK	0x00000001	/* No ACK64# during ABS64 cycle	*/
+#define GREG_PCIESTAT_DTRTO	0x00000002	/* Delayed transaction timeout	*/
+#define GREG_PCIESTAT_OTHER	0x00000004	/* Other PCI error, check cfg space */
+
+/* The layout of the GREG_PCIEMASK is identical to that of GREG_PCIESTAT.
+ * Bits set in GREG_PCIEMASK will prevent that interrupt type from being
+ * signalled to the cpu.
+ */
+
+/* Global BIF Configuration Register */
+#define GREG_BIFCFG_SLOWCLK	0x00000001	/* Set if PCI runs < 25Mhz	*/
+#define GREG_BIFCFG_B64DIS	0x00000002	/* Disable 64bit wide data cycle*/
+#define GREG_BIFCFG_M66EN	0x00000004	/* Set if on 66Mhz PCI segment	*/
+
+/* Global BIF Diagnostics Register */
+#define GREG_BIFDIAG_BURSTSM	0x007f0000	/* PCI Burst state machine	*/
+#define GREG_BIFDIAG_BIFSM	0xff000000	/* BIF state machine		*/
+
+/* Global Software Reset Register.
+ *
+ * This register is used to perform a global reset of the RX and TX portions
+ * of the GEM asic.  Setting the RX or TX reset bit will start the reset.
+ * The driver _MUST_ poll these bits until they clear.  One may not attempt
+ * to program any other part of GEM until the bits clear.
+ */
+#define GREG_SWRST_TXRST	0x00000001	/* TX Software Reset		*/
+#define GREG_SWRST_RXRST	0x00000002	/* RX Software Reset		*/
+#define GREG_SWRST_RSTOUT	0x00000004	/* Force RST# pin active	*/
+#define GREG_SWRST_CACHESIZE	0x00ff0000	/* RIO only: cache line size	*/
+#define GREG_SWRST_CACHE_SHIFT	16
+
+/* TX DMA Registers */
+#define TXDMA_KICK	0x2000UL	/* TX Kick Register		*/
+#define TXDMA_CFG	0x2004UL	/* TX Configuration Register	*/
+#define TXDMA_DBLOW	0x2008UL	/* TX Desc. Base Low		*/
+#define TXDMA_DBHI	0x200CUL	/* TX Desc. Base High		*/
+#define TXDMA_FWPTR	0x2014UL	/* TX FIFO Write Pointer	*/
+#define TXDMA_FSWPTR	0x2018UL	/* TX FIFO Shadow Write Pointer	*/
+#define TXDMA_FRPTR	0x201CUL	/* TX FIFO Read Pointer		*/
+#define TXDMA_FSRPTR	0x2020UL	/* TX FIFO Shadow Read Pointer	*/
+#define TXDMA_PCNT	0x2024UL	/* TX FIFO Packet Counter	*/
+#define TXDMA_SMACHINE	0x2028UL	/* TX State Machine Register	*/
+#define TXDMA_DPLOW	0x2030UL	/* TX Data Pointer Low		*/
+#define TXDMA_DPHI	0x2034UL	/* TX Data Pointer High		*/
+#define TXDMA_TXDONE	0x2100UL	/* TX Completion Register	*/
+#define TXDMA_FADDR	0x2104UL	/* TX FIFO Address		*/
+#define TXDMA_FTAG	0x2108UL	/* TX FIFO Tag			*/
+#define TXDMA_DLOW	0x210CUL	/* TX FIFO Data Low		*/
+#define TXDMA_DHIT1	0x2110UL	/* TX FIFO Data HighT1		*/
+#define TXDMA_DHIT0	0x2114UL	/* TX FIFO Data HighT0		*/
+#define TXDMA_FSZ	0x2118UL	/* TX FIFO Size			*/
+
+/* TX Kick Register.
+ *
+ * This 13-bit register is programmed by the driver to hold the descriptor
+ * entry index which follows the last valid transmit descriptor.
+ */
+
+/* TX Completion Register.
+ *
+ * This 13-bit register is updated by GEM to hold to descriptor entry index
+ * which follows the last descriptor already processed by GEM.  Note that
+ * this value is mirrored in GREG_STAT which eliminates the need to even
+ * access this register in the driver during interrupt processing.
+ */
+
+/* TX Configuration Register.
+ *
+ * Note that TXDMA_CFG_FTHRESH, the TX FIFO Threshold, is an obsolete feature
+ * that was meant to be used with jumbo packets.  It should be set to the
+ * maximum value of 0x4ff, else one risks getting TX MAC Underrun errors.
+ */
+#define TXDMA_CFG_ENABLE	0x00000001	/* Enable TX DMA channel	*/
+#define TXDMA_CFG_RINGSZ	0x0000001e	/* TX descriptor ring size	*/
+#define TXDMA_CFG_RINGSZ_32	0x00000000	/* 32 TX descriptors		*/
+#define TXDMA_CFG_RINGSZ_64	0x00000002	/* 64 TX descriptors		*/
+#define TXDMA_CFG_RINGSZ_128	0x00000004	/* 128 TX descriptors		*/
+#define TXDMA_CFG_RINGSZ_256	0x00000006	/* 256 TX descriptors		*/
+#define TXDMA_CFG_RINGSZ_512	0x00000008	/* 512 TX descriptors		*/
+#define TXDMA_CFG_RINGSZ_1K	0x0000000a	/* 1024 TX descriptors		*/
+#define TXDMA_CFG_RINGSZ_2K	0x0000000c	/* 2048 TX descriptors		*/
+#define TXDMA_CFG_RINGSZ_4K	0x0000000e	/* 4096 TX descriptors		*/
+#define TXDMA_CFG_RINGSZ_8K	0x00000010	/* 8192 TX descriptors		*/
+#define TXDMA_CFG_PIOSEL	0x00000020	/* Enable TX FIFO PIO from cpu	*/
+#define TXDMA_CFG_FTHRESH	0x001ffc00	/* TX FIFO Threshold, obsolete	*/
+#define TXDMA_CFG_PMODE		0x00200000	/* TXALL irq means TX FIFO empty*/
+
+/* TX Descriptor Base Low/High.
+ *
+ * These two registers store the 53 most significant bits of the base address
+ * of the TX descriptor table.  The 11 least significant bits are always
+ * zero.  As a result, the TX descriptor table must be 2K aligned.
+ */
+
+/* The rest of the TXDMA_* registers are for diagnostics and debug, I will document
+ * them later. -DaveM
+ */
+
+/* WakeOnLan Registers	*/
+#define WOL_MATCH0	0x3000UL
+#define WOL_MATCH1	0x3004UL
+#define WOL_MATCH2	0x3008UL
+#define WOL_MCOUNT	0x300CUL
+#define WOL_WAKECSR	0x3010UL
+
+/* WOL Match count register
+ */
+#define WOL_MCOUNT_N		0x00000010
+#define WOL_MCOUNT_M		0x00000000 /* 0 << 8 */
+
+#define WOL_WAKECSR_ENABLE	0x00000001
+#define WOL_WAKECSR_MII		0x00000002
+#define WOL_WAKECSR_SEEN	0x00000004
+#define WOL_WAKECSR_FILT_UCAST	0x00000008
+#define WOL_WAKECSR_FILT_MCAST	0x00000010
+#define WOL_WAKECSR_FILT_BCAST	0x00000020
+#define WOL_WAKECSR_FILT_SEEN	0x00000040
+
+
+/* Receive DMA Registers */
+#define RXDMA_CFG	0x4000UL	/* RX Configuration Register	*/
+#define RXDMA_DBLOW	0x4004UL	/* RX Descriptor Base Low	*/
+#define RXDMA_DBHI	0x4008UL	/* RX Descriptor Base High	*/
+#define RXDMA_FWPTR	0x400CUL	/* RX FIFO Write Pointer	*/
+#define RXDMA_FSWPTR	0x4010UL	/* RX FIFO Shadow Write Pointer	*/
+#define RXDMA_FRPTR	0x4014UL	/* RX FIFO Read Pointer		*/
+#define RXDMA_PCNT	0x4018UL	/* RX FIFO Packet Counter	*/
+#define RXDMA_SMACHINE	0x401CUL	/* RX State Machine Register	*/
+#define RXDMA_PTHRESH	0x4020UL	/* Pause Thresholds		*/
+#define RXDMA_DPLOW	0x4024UL	/* RX Data Pointer Low		*/
+#define RXDMA_DPHI	0x4028UL	/* RX Data Pointer High		*/
+#define RXDMA_KICK	0x4100UL	/* RX Kick Register		*/
+#define RXDMA_DONE	0x4104UL	/* RX Completion Register	*/
+#define RXDMA_BLANK	0x4108UL	/* RX Blanking Register		*/
+#define RXDMA_FADDR	0x410CUL	/* RX FIFO Address		*/
+#define RXDMA_FTAG	0x4110UL	/* RX FIFO Tag			*/
+#define RXDMA_DLOW	0x4114UL	/* RX FIFO Data Low		*/
+#define RXDMA_DHIT1	0x4118UL	/* RX FIFO Data HighT0		*/
+#define RXDMA_DHIT0	0x411CUL	/* RX FIFO Data HighT1		*/
+#define RXDMA_FSZ	0x4120UL	/* RX FIFO Size			*/
+
+/* RX Configuration Register. */
+#define RXDMA_CFG_ENABLE	0x00000001	/* Enable RX DMA channel	*/
+#define RXDMA_CFG_RINGSZ	0x0000001e	/* RX descriptor ring size	*/
+#define RXDMA_CFG_RINGSZ_32	0x00000000	/* - 32   entries		*/
+#define RXDMA_CFG_RINGSZ_64	0x00000002	/* - 64   entries		*/
+#define RXDMA_CFG_RINGSZ_128	0x00000004	/* - 128  entries		*/
+#define RXDMA_CFG_RINGSZ_256	0x00000006	/* - 256  entries		*/
+#define RXDMA_CFG_RINGSZ_512	0x00000008	/* - 512  entries		*/
+#define RXDMA_CFG_RINGSZ_1K	0x0000000a	/* - 1024 entries		*/
+#define RXDMA_CFG_RINGSZ_2K	0x0000000c	/* - 2048 entries		*/
+#define RXDMA_CFG_RINGSZ_4K	0x0000000e	/* - 4096 entries		*/
+#define RXDMA_CFG_RINGSZ_8K	0x00000010	/* - 8192 entries		*/
+#define RXDMA_CFG_RINGSZ_BDISAB	0x00000020	/* Disable RX desc batching	*/
+#define RXDMA_CFG_FBOFF		0x00001c00	/* Offset of first data byte	*/
+#define RXDMA_CFG_CSUMOFF	0x000fe000	/* Skip bytes before csum calc	*/
+#define RXDMA_CFG_FTHRESH	0x07000000	/* RX FIFO dma start threshold	*/
+#define RXDMA_CFG_FTHRESH_64	0x00000000	/* - 64   bytes			*/
+#define RXDMA_CFG_FTHRESH_128	0x01000000	/* - 128  bytes			*/
+#define RXDMA_CFG_FTHRESH_256	0x02000000	/* - 256  bytes			*/
+#define RXDMA_CFG_FTHRESH_512	0x03000000	/* - 512  bytes			*/
+#define RXDMA_CFG_FTHRESH_1K	0x04000000	/* - 1024 bytes			*/
+#define RXDMA_CFG_FTHRESH_2K	0x05000000	/* - 2048 bytes			*/
+
+/* RX Descriptor Base Low/High.
+ *
+ * These two registers store the 53 most significant bits of the base address
+ * of the RX descriptor table.  The 11 least significant bits are always
+ * zero.  As a result, the RX descriptor table must be 2K aligned.
+ */
+
+/* RX PAUSE Thresholds.
+ *
+ * These values determine when XOFF and XON PAUSE frames are emitted by
+ * GEM.  The thresholds measure RX FIFO occupancy in units of 64 bytes.
+ */
+#define RXDMA_PTHRESH_OFF	0x000001ff	/* XOFF emitted w/FIFO > this	*/
+#define RXDMA_PTHRESH_ON	0x001ff000	/* XON emitted w/FIFO < this	*/
+
+/* RX Kick Register.
+ *
+ * This 13-bit register is written by the host CPU and holds the last
+ * valid RX descriptor number plus one.  This is, if 'N' is written to
+ * this register, it means that all RX descriptors up to but excluding
+ * 'N' are valid.
+ *
+ * The hardware requires that RX descriptors are posted in increments
+ * of 4.  This means 'N' must be a multiple of four.  For the best
+ * performance, the first new descriptor being posted should be (PCI)
+ * cache line aligned.
+ */
+
+/* RX Completion Register.
+ *
+ * This 13-bit register is updated by GEM to indicate which RX descriptors
+ * have already been used for receive frames.  All descriptors up to but
+ * excluding the value in this register are ready to be processed.  GEM
+ * updates this register value after the RX FIFO empties completely into
+ * the RX descriptor's buffer, but before the RX_DONE bit is set in the
+ * interrupt status register.
+ */
+
+/* RX Blanking Register. */
+#define RXDMA_BLANK_IPKTS	0x000001ff	/* RX_DONE asserted after this
+						 * many packets received since
+						 * previous RX_DONE.
+						 */
+#define RXDMA_BLANK_ITIME	0x000ff000	/* RX_DONE asserted after this
+						 * many clocks (measured in 2048
+						 * PCI clocks) were counted since
+						 * the previous RX_DONE.
+						 */
+
+/* RX FIFO Size.
+ *
+ * This 11-bit read-only register indicates how large, in units of 64-bytes,
+ * the RX FIFO is.  The driver uses this to properly configure the RX PAUSE
+ * thresholds.
+ */
+
+/* The rest of the RXDMA_* registers are for diagnostics and debug, I will document
+ * them later. -DaveM
+ */
+
+/* MAC Registers */
+#define MAC_TXRST	0x6000UL	/* TX MAC Software Reset Command*/
+#define MAC_RXRST	0x6004UL	/* RX MAC Software Reset Command*/
+#define MAC_SNDPAUSE	0x6008UL	/* Send Pause Command Register	*/
+#define MAC_TXSTAT	0x6010UL	/* TX MAC Status Register	*/
+#define MAC_RXSTAT	0x6014UL	/* RX MAC Status Register	*/
+#define MAC_CSTAT	0x6018UL	/* MAC Control Status Register	*/
+#define MAC_TXMASK	0x6020UL	/* TX MAC Mask Register		*/
+#define MAC_RXMASK	0x6024UL	/* RX MAC Mask Register		*/
+#define MAC_MCMASK	0x6028UL	/* MAC Control Mask Register	*/
+#define MAC_TXCFG	0x6030UL	/* TX MAC Configuration Register*/
+#define MAC_RXCFG	0x6034UL	/* RX MAC Configuration Register*/
+#define MAC_MCCFG	0x6038UL	/* MAC Control Config Register	*/
+#define MAC_XIFCFG	0x603CUL	/* XIF Configuration Register	*/
+#define MAC_IPG0	0x6040UL	/* InterPacketGap0 Register	*/
+#define MAC_IPG1	0x6044UL	/* InterPacketGap1 Register	*/
+#define MAC_IPG2	0x6048UL	/* InterPacketGap2 Register	*/
+#define MAC_STIME	0x604CUL	/* SlotTime Register		*/
+#define MAC_MINFSZ	0x6050UL	/* MinFrameSize Register	*/
+#define MAC_MAXFSZ	0x6054UL	/* MaxFrameSize Register	*/
+#define MAC_PASIZE	0x6058UL	/* PA Size Register		*/
+#define MAC_JAMSIZE	0x605CUL	/* JamSize Register		*/
+#define MAC_ATTLIM	0x6060UL	/* Attempt Limit Register	*/
+#define MAC_MCTYPE	0x6064UL	/* MAC Control Type Register	*/
+#define MAC_ADDR0	0x6080UL	/* MAC Address 0 Register	*/
+#define MAC_ADDR1	0x6084UL	/* MAC Address 1 Register	*/
+#define MAC_ADDR2	0x6088UL	/* MAC Address 2 Register	*/
+#define MAC_ADDR3	0x608CUL	/* MAC Address 3 Register	*/
+#define MAC_ADDR4	0x6090UL	/* MAC Address 4 Register	*/
+#define MAC_ADDR5	0x6094UL	/* MAC Address 5 Register	*/
+#define MAC_ADDR6	0x6098UL	/* MAC Address 6 Register	*/
+#define MAC_ADDR7	0x609CUL	/* MAC Address 7 Register	*/
+#define MAC_ADDR8	0x60A0UL	/* MAC Address 8 Register	*/
+#define MAC_AFILT0	0x60A4UL	/* Address Filter 0 Register	*/
+#define MAC_AFILT1	0x60A8UL	/* Address Filter 1 Register	*/
+#define MAC_AFILT2	0x60ACUL	/* Address Filter 2 Register	*/
+#define MAC_AF21MSK	0x60B0UL	/* Address Filter 2&1 Mask Reg	*/
+#define MAC_AF0MSK	0x60B4UL	/* Address Filter 0 Mask Reg	*/
+#define MAC_HASH0	0x60C0UL	/* Hash Table 0 Register	*/
+#define MAC_HASH1	0x60C4UL	/* Hash Table 1 Register	*/
+#define MAC_HASH2	0x60C8UL	/* Hash Table 2 Register	*/
+#define MAC_HASH3	0x60CCUL	/* Hash Table 3 Register	*/
+#define MAC_HASH4	0x60D0UL	/* Hash Table 4 Register	*/
+#define MAC_HASH5	0x60D4UL	/* Hash Table 5 Register	*/
+#define MAC_HASH6	0x60D8UL	/* Hash Table 6 Register	*/
+#define MAC_HASH7	0x60DCUL	/* Hash Table 7 Register	*/
+#define MAC_HASH8	0x60E0UL	/* Hash Table 8 Register	*/
+#define MAC_HASH9	0x60E4UL	/* Hash Table 9 Register	*/
+#define MAC_HASH10	0x60E8UL	/* Hash Table 10 Register	*/
+#define MAC_HASH11	0x60ECUL	/* Hash Table 11 Register	*/
+#define MAC_HASH12	0x60F0UL	/* Hash Table 12 Register	*/
+#define MAC_HASH13	0x60F4UL	/* Hash Table 13 Register	*/
+#define MAC_HASH14	0x60F8UL	/* Hash Table 14 Register	*/
+#define MAC_HASH15	0x60FCUL	/* Hash Table 15 Register	*/
+#define MAC_NCOLL	0x6100UL	/* Normal Collision Counter	*/
+#define MAC_FASUCC	0x6104UL	/* First Attmpt. Succ Coll Ctr.	*/
+#define MAC_ECOLL	0x6108UL	/* Excessive Collision Counter	*/
+#define MAC_LCOLL	0x610CUL	/* Late Collision Counter	*/
+#define MAC_DTIMER	0x6110UL	/* Defer Timer			*/
+#define MAC_PATMPS	0x6114UL	/* Peak Attempts Register	*/
+#define MAC_RFCTR	0x6118UL	/* Receive Frame Counter	*/
+#define MAC_LERR	0x611CUL	/* Length Error Counter		*/
+#define MAC_AERR	0x6120UL	/* Alignment Error Counter	*/
+#define MAC_FCSERR	0x6124UL	/* FCS Error Counter		*/
+#define MAC_RXCVERR	0x6128UL	/* RX code Violation Error Ctr	*/
+#define MAC_RANDSEED	0x6130UL	/* Random Number Seed Register	*/
+#define MAC_SMACHINE	0x6134UL	/* State Machine Register	*/
+
+/* TX MAC Software Reset Command. */
+#define MAC_TXRST_CMD	0x00000001	/* Start sw reset, self-clears	*/
+
+/* RX MAC Software Reset Command. */
+#define MAC_RXRST_CMD	0x00000001	/* Start sw reset, self-clears	*/
+
+/* Send Pause Command. */
+#define MAC_SNDPAUSE_TS	0x0000ffff	/* The pause_time operand used in
+					 * Send_Pause and flow-control
+					 * handshakes.
+					 */
+#define MAC_SNDPAUSE_SP	0x00010000	/* Setting this bit instructs the MAC
+					 * to send a Pause Flow Control
+					 * frame onto the network.
+					 */
+
+/* TX MAC Status Register. */
+#define MAC_TXSTAT_XMIT	0x00000001	/* Frame Transmitted		*/
+#define MAC_TXSTAT_URUN	0x00000002	/* TX Underrun			*/
+#define MAC_TXSTAT_MPE	0x00000004	/* Max Packet Size Error	*/
+#define MAC_TXSTAT_NCE	0x00000008	/* Normal Collision Cntr Expire	*/
+#define MAC_TXSTAT_ECE	0x00000010	/* Excess Collision Cntr Expire	*/
+#define MAC_TXSTAT_LCE	0x00000020	/* Late Collision Cntr Expire	*/
+#define MAC_TXSTAT_FCE	0x00000040	/* First Collision Cntr Expire	*/
+#define MAC_TXSTAT_DTE	0x00000080	/* Defer Timer Expire		*/
+#define MAC_TXSTAT_PCE	0x00000100	/* Peak Attempts Cntr Expire	*/
+
+/* RX MAC Status Register. */
+#define MAC_RXSTAT_RCV	0x00000001	/* Frame Received		*/
+#define MAC_RXSTAT_OFLW	0x00000002	/* Receive Overflow		*/
+#define MAC_RXSTAT_FCE	0x00000004	/* Frame Cntr Expire		*/
+#define MAC_RXSTAT_ACE	0x00000008	/* Align Error Cntr Expire	*/
+#define MAC_RXSTAT_CCE	0x00000010	/* CRC Error Cntr Expire	*/
+#define MAC_RXSTAT_LCE	0x00000020	/* Length Error Cntr Expire	*/
+#define MAC_RXSTAT_VCE	0x00000040	/* Code Violation Cntr Expire	*/
+
+/* MAC Control Status Register. */
+#define MAC_CSTAT_PRCV	0x00000001	/* Pause Received		*/
+#define MAC_CSTAT_PS	0x00000002	/* Paused State			*/
+#define MAC_CSTAT_NPS	0x00000004	/* Not Paused State		*/
+#define MAC_CSTAT_PTR	0xffff0000	/* Pause Time Received		*/
+
+/* The layout of the MAC_{TX,RX,C}MASK registers is identical to that
+ * of MAC_{TX,RX,C}STAT.  Bits set in MAC_{TX,RX,C}MASK will prevent
+ * that interrupt type from being signalled to front end of GEM.  For
+ * the interrupt to actually get sent to the cpu, it is necessary to
+ * properly set the appropriate GREG_IMASK_{TX,RX,}MAC bits as well.
+ */
+
+/* TX MAC Configuration Register.
+ *
+ * NOTE: The TX MAC Enable bit must be cleared and polled until
+ *	 zero before any other bits in this register are changed.
+ *
+ *	 Also, enabling the Carrier Extension feature of GEM is
+ *	 a 3 step process 1) Set TX Carrier Extension 2) Set
+ *	 RX Carrier Extension 3) Set Slot Time to 0x200.  This
+ *	 mode must be enabled when in half-duplex at 1Gbps, else
+ *	 it must be disabled.
+ */
+#define MAC_TXCFG_ENAB	0x00000001	/* TX MAC Enable		*/
+#define MAC_TXCFG_ICS	0x00000002	/* Ignore Carrier Sense		*/
+#define MAC_TXCFG_ICOLL	0x00000004	/* Ignore Collisions		*/
+#define MAC_TXCFG_EIPG0	0x00000008	/* Enable IPG0			*/
+#define MAC_TXCFG_NGU	0x00000010	/* Never Give Up		*/
+#define MAC_TXCFG_NGUL	0x00000020	/* Never Give Up Limit		*/
+#define MAC_TXCFG_NBO	0x00000040	/* No Backoff			*/
+#define MAC_TXCFG_SD	0x00000080	/* Slow Down			*/
+#define MAC_TXCFG_NFCS	0x00000100	/* No FCS			*/
+#define MAC_TXCFG_TCE	0x00000200	/* TX Carrier Extension		*/
+
+/* RX MAC Configuration Register.
+ *
+ * NOTE: The RX MAC Enable bit must be cleared and polled until
+ *	 zero before any other bits in this register are changed.
+ *
+ *	 Similar rules apply to the Hash Filter Enable bit when
+ *	 programming the hash table registers, and the Address Filter
+ *	 Enable bit when programming the address filter registers.
+ */
+#define MAC_RXCFG_ENAB	0x00000001	/* RX MAC Enable		*/
+#define MAC_RXCFG_SPAD	0x00000002	/* Strip Pad			*/
+#define MAC_RXCFG_SFCS	0x00000004	/* Strip FCS			*/
+#define MAC_RXCFG_PROM	0x00000008	/* Promiscuous Mode		*/
+#define MAC_RXCFG_PGRP	0x00000010	/* Promiscuous Group		*/
+#define MAC_RXCFG_HFE	0x00000020	/* Hash Filter Enable		*/
+#define MAC_RXCFG_AFE	0x00000040	/* Address Filter Enable	*/
+#define MAC_RXCFG_DDE	0x00000080	/* Disable Discard on Error	*/
+#define MAC_RXCFG_RCE	0x00000100	/* RX Carrier Extension		*/
+
+/* MAC Control Config Register. */
+#define MAC_MCCFG_SPE	0x00000001	/* Send Pause Enable		*/
+#define MAC_MCCFG_RPE	0x00000002	/* Receive Pause Enable		*/
+#define MAC_MCCFG_PMC	0x00000004	/* Pass MAC Control		*/
+
+/* XIF Configuration Register.
+ *
+ * NOTE: When leaving or entering loopback mode, a global hardware
+ *       init of GEM should be performed.
+ */
+#define MAC_XIFCFG_OE	0x00000001	/* MII TX Output Driver Enable	*/
+#define MAC_XIFCFG_LBCK	0x00000002	/* Loopback TX to RX		*/
+#define MAC_XIFCFG_DISE	0x00000004	/* Disable RX path during TX	*/
+#define MAC_XIFCFG_GMII	0x00000008	/* Use GMII clocks + datapath	*/
+#define MAC_XIFCFG_MBOE	0x00000010	/* Controls MII_BUF_EN pin	*/
+#define MAC_XIFCFG_LLED	0x00000020	/* Force LINKLED# active (low)	*/
+#define MAC_XIFCFG_FLED	0x00000040	/* Force FDPLXLED# active (low)	*/
+
+/* InterPacketGap0 Register.  This 8-bit value is used as an extension
+ * to the InterPacketGap1 Register.  Specifically it contributes to the
+ * timing of the RX-to-TX IPG.  This value is ignored and presumed to
+ * be zero for TX-to-TX IPG calculations and/or when the Enable IPG0 bit
+ * is cleared in the TX MAC Configuration Register.
+ *
+ * This value in this register in terms of media byte time.
+ *
+ * Recommended value: 0x00
+ */
+
+/* InterPacketGap1 Register.  This 8-bit value defines the first 2/3
+ * portion of the Inter Packet Gap.
+ *
+ * This value in this register in terms of media byte time.
+ *
+ * Recommended value: 0x08
+ */
+
+/* InterPacketGap2 Register.  This 8-bit value defines the second 1/3
+ * portion of the Inter Packet Gap.
+ *
+ * This value in this register in terms of media byte time.
+ *
+ * Recommended value: 0x04
+ */
+
+/* Slot Time Register.  This 10-bit value specifies the slot time
+ * parameter in units of media byte time.  It determines the physical
+ * span of the network.
+ *
+ * Recommended value: 0x40
+ */
+
+/* Minimum Frame Size Register.  This 10-bit register specifies the
+ * smallest sized frame the TXMAC will send onto the medium, and the
+ * RXMAC will receive from the medium.
+ *
+ * Recommended value: 0x40
+ */
+
+/* Maximum Frame and Burst Size Register.
+ *
+ * This register specifies two things.  First it specifies the maximum
+ * sized frame the TXMAC will send and the RXMAC will recognize as
+ * valid.  Second, it specifies the maximum run length of a burst of
+ * packets sent in half-duplex gigabit modes.
+ *
+ * Recommended value: 0x200005ee
+ */
+#define MAC_MAXFSZ_MFS	0x00007fff	/* Max Frame Size		*/
+#define MAC_MAXFSZ_MBS	0x7fff0000	/* Max Burst Size		*/
+
+/* PA Size Register.  This 10-bit register specifies the number of preamble
+ * bytes which will be transmitted at the beginning of each frame.  A
+ * value of two or greater should be programmed here.
+ *
+ * Recommended value: 0x07
+ */
+
+/* Jam Size Register.  This 4-bit register specifies the duration of
+ * the jam in units of media byte time.
+ *
+ * Recommended value: 0x04
+ */
+
+/* Attempts Limit Register.  This 8-bit register specifies the number
+ * of attempts that the TXMAC will make to transmit a frame, before it
+ * resets its Attempts Counter.  After reaching the Attempts Limit the
+ * TXMAC may or may not drop the frame, as determined by the NGU
+ * (Never Give Up) and NGUL (Never Give Up Limit) bits in the TXMAC
+ * Configuration Register.
+ *
+ * Recommended value: 0x10
+ */
+
+/* MAX Control Type Register.  This 16-bit register specifies the
+ * "type" field of a MAC Control frame.  The TXMAC uses this field to
+ * encapsulate the MAC Control frame for transmission, and the RXMAC
+ * uses it for decoding valid MAC Control frames received from the
+ * network.
+ *
+ * Recommended value: 0x8808
+ */
+
+/* MAC Address Registers.  Each of these registers specify the
+ * ethernet MAC of the interface, 16-bits at a time.  Register
+ * 0 specifies bits [47:32], register 1 bits [31:16], and register
+ * 2 bits [15:0].
+ *
+ * Registers 3 through and including 5 specify an alternate
+ * MAC address for the interface.
+ *
+ * Registers 6 through and including 8 specify the MAC Control
+ * Address, which must be the reserved multicast address for MAC
+ * Control frames.
+ *
+ * Example: To program primary station address a:b:c:d:e:f into
+ *	    the chip.
+ *		MAC_Address_2 = (a << 8) | b
+ *		MAC_Address_1 = (c << 8) | d
+ *		MAC_Address_0 = (e << 8) | f
+ */
+
+/* Address Filter Registers.  Registers 0 through 2 specify bit
+ * fields [47:32] through [15:0], respectively, of the address
+ * filter.  The Address Filter 2&1 Mask Register denotes the 8-bit
+ * nibble mask for Address Filter Registers 2 and 1.  The Address
+ * Filter 0 Mask Register denotes the 16-bit mask for the Address
+ * Filter Register 0.
+ */
+
+/* Hash Table Registers.  Registers 0 through 15 specify bit fields
+ * [255:240] through [15:0], respectively, of the hash table.
+ */
+
+/* Statistics Registers.  All of these registers are 16-bits and
+ * track occurrences of a specific event.  GEM can be configured
+ * to interrupt the host cpu when any of these counters overflow.
+ * They should all be explicitly initialized to zero when the interface
+ * is brought up.
+ */
+
+/* Random Number Seed Register.  This 10-bit value is used as the
+ * RNG seed inside GEM for the CSMA/CD backoff algorithm.  It is
+ * recommended to program this register to the 10 LSB of the
+ * interfaces MAC address.
+ */
+
+/* Pause Timer, read-only.  This 16-bit timer is used to time the pause
+ * interval as indicated by a received pause flow control frame.
+ * A non-zero value in this timer indicates that the MAC is currently in
+ * the paused state.
+ */
+
+/* MIF Registers */
+#define MIF_BBCLK	0x6200UL	/* MIF Bit-Bang Clock		*/
+#define MIF_BBDATA	0x6204UL	/* MIF Bit-Band Data		*/
+#define MIF_BBOENAB	0x6208UL	/* MIF Bit-Bang Output Enable	*/
+#define MIF_FRAME	0x620CUL	/* MIF Frame/Output Register	*/
+#define MIF_CFG		0x6210UL	/* MIF Configuration Register	*/
+#define MIF_MASK	0x6214UL	/* MIF Mask Register		*/
+#define MIF_STATUS	0x6218UL	/* MIF Status Register		*/
+#define MIF_SMACHINE	0x621CUL	/* MIF State Machine Register	*/
+
+/* MIF Bit-Bang Clock.  This 1-bit register is used to generate the
+ * MDC clock waveform on the MII Management Interface when the MIF is
+ * programmed in the "Bit-Bang" mode.  Writing a '1' after a '0' into
+ * this register will create a rising edge on the MDC, while writing
+ * a '0' after a '1' will create a falling edge.  For every bit that
+ * is transferred on the management interface, both edges have to be
+ * generated.
+ */
+
+/* MIF Bit-Bang Data.  This 1-bit register is used to generate the
+ * outgoing data (MDO) on the MII Management Interface when the MIF
+ * is programmed in the "Bit-Bang" mode.  The daa will be steered to the
+ * appropriate MDIO based on the state of the PHY_Select bit in the MIF
+ * Configuration Register.
+ */
+
+/* MIF Big-Band Output Enable.  THis 1-bit register is used to enable
+ * ('1') or disable ('0') the I-directional driver on the MII when the
+ * MIF is programmed in the "Bit-Bang" mode.  The MDIO should be enabled
+ * when data bits are transferred from the MIF to the transceiver, and it
+ * should be disabled when the interface is idle or when data bits are
+ * transferred from the transceiver to the MIF (data portion of a read
+ * instruction).  Only one MDIO will be enabled at a given time, depending
+ * on the state of the PHY_Select bit in the MIF Configuration Register.
+ */
+
+/* MIF Configuration Register.  This 15-bit register controls the operation
+ * of the MIF.
+ */
+#define MIF_CFG_PSELECT	0x00000001	/* Xcvr slct: 0=mdio0 1=mdio1	*/
+#define MIF_CFG_POLL	0x00000002	/* Enable polling mechanism	*/
+#define MIF_CFG_BBMODE	0x00000004	/* 1=bit-bang 0=frame mode	*/
+#define MIF_CFG_PRADDR	0x000000f8	/* Xcvr poll register address	*/
+#define MIF_CFG_MDI0	0x00000100	/* MDIO_0 present or read-bit	*/
+#define MIF_CFG_MDI1	0x00000200	/* MDIO_1 present or read-bit	*/
+#define MIF_CFG_PPADDR	0x00007c00	/* Xcvr poll PHY address	*/
+
+/* MIF Frame/Output Register.  This 32-bit register allows the host to
+ * communicate with a transceiver in frame mode (as opposed to big-bang
+ * mode).  Writes by the host specify an instrution.  After being issued
+ * the host must poll this register for completion.  Also, after
+ * completion this register holds the data returned by the transceiver
+ * if applicable.
+ */
+#define MIF_FRAME_ST	0xc0000000	/* STart of frame		*/
+#define MIF_FRAME_OP	0x30000000	/* OPcode			*/
+#define MIF_FRAME_PHYAD	0x0f800000	/* PHY ADdress			*/
+#define MIF_FRAME_REGAD	0x007c0000	/* REGister ADdress		*/
+#define MIF_FRAME_TAMSB	0x00020000	/* Turn Around MSB		*/
+#define MIF_FRAME_TALSB	0x00010000	/* Turn Around LSB		*/
+#define MIF_FRAME_DATA	0x0000ffff	/* Instruction Payload		*/
+
+/* MIF Status Register.  This register reports status when the MIF is
+ * operating in the poll mode.  The poll status field is auto-clearing
+ * on read.
+ */
+#define MIF_STATUS_DATA	0xffff0000	/* Live image of XCVR reg	*/
+#define MIF_STATUS_STAT	0x0000ffff	/* Which bits have changed	*/
+
+/* MIF Mask Register.  This 16-bit register is used when in poll mode
+ * to say which bits of the polled register will cause an interrupt
+ * when changed.
+ */
+
+/* PCS/Serialink Registers */
+#define PCS_MIICTRL	0x9000UL	/* PCS MII Control Register	*/
+#define PCS_MIISTAT	0x9004UL	/* PCS MII Status Register	*/
+#define PCS_MIIADV	0x9008UL	/* PCS MII Advertisement Reg	*/
+#define PCS_MIILP	0x900CUL	/* PCS MII Link Partner Ability	*/
+#define PCS_CFG		0x9010UL	/* PCS Configuration Register	*/
+#define PCS_SMACHINE	0x9014UL	/* PCS State Machine Register	*/
+#define PCS_ISTAT	0x9018UL	/* PCS Interrupt Status Reg	*/
+#define PCS_DMODE	0x9050UL	/* Datapath Mode Register	*/
+#define PCS_SCTRL	0x9054UL	/* Serialink Control Register	*/
+#define PCS_SOS		0x9058UL	/* Shared Output Select Reg	*/
+#define PCS_SSTATE	0x905CUL	/* Serialink State Register	*/
+
+/* PCD MII Control Register. */
+#define PCS_MIICTRL_SPD	0x00000040	/* Read as one, writes ignored	*/
+#define PCS_MIICTRL_CT	0x00000080	/* Force COL signal active	*/
+#define PCS_MIICTRL_DM	0x00000100	/* Duplex mode, forced low	*/
+#define PCS_MIICTRL_RAN	0x00000200	/* Restart auto-neg, self clear	*/
+#define PCS_MIICTRL_ISO	0x00000400	/* Read as zero, writes ignored	*/
+#define PCS_MIICTRL_PD	0x00000800	/* Read as zero, writes ignored	*/
+#define PCS_MIICTRL_ANE	0x00001000	/* Auto-neg enable		*/
+#define PCS_MIICTRL_SS	0x00002000	/* Read as zero, writes ignored	*/
+#define PCS_MIICTRL_WB	0x00004000	/* Wrapback, loopback at 10-bit
+					 * input side of Serialink
+					 */
+#define PCS_MIICTRL_RST	0x00008000	/* Resets PCS, self clearing	*/
+
+/* PCS MII Status Register. */
+#define PCS_MIISTAT_EC	0x00000001	/* Ext Capability: Read as zero	*/
+#define PCS_MIISTAT_JD	0x00000002	/* Jabber Detect: Read as zero	*/
+#define PCS_MIISTAT_LS	0x00000004	/* Link Status: 1=up 0=down	*/
+#define PCS_MIISTAT_ANA	0x00000008	/* Auto-neg Ability, always 1	*/
+#define PCS_MIISTAT_RF	0x00000010	/* Remote Fault			*/
+#define PCS_MIISTAT_ANC	0x00000020	/* Auto-neg complete		*/
+#define PCS_MIISTAT_ES	0x00000100	/* Extended Status, always 1	*/
+
+/* PCS MII Advertisement Register. */
+#define PCS_MIIADV_FD	0x00000020	/* Advertise Full Duplex	*/
+#define PCS_MIIADV_HD	0x00000040	/* Advertise Half Duplex	*/
+#define PCS_MIIADV_SP	0x00000080	/* Advertise Symmetric Pause	*/
+#define PCS_MIIADV_AP	0x00000100	/* Advertise Asymmetric Pause	*/
+#define PCS_MIIADV_RF	0x00003000	/* Remote Fault			*/
+#define PCS_MIIADV_ACK	0x00004000	/* Read-only			*/
+#define PCS_MIIADV_NP	0x00008000	/* Next-page, forced low	*/
+
+/* PCS MII Link Partner Ability Register.   This register is equivalent
+ * to the Link Partnet Ability Register of the standard MII register set.
+ * It's layout corresponds to the PCS MII Advertisement Register.
+ */
+
+/* PCS Configuration Register. */
+#define PCS_CFG_ENABLE	0x00000001	/* Must be zero while changing
+					 * PCS MII advertisement reg.
+					 */
+#define PCS_CFG_SDO	0x00000002	/* Signal detect override	*/
+#define PCS_CFG_SDL	0x00000004	/* Signal detect active low	*/
+#define PCS_CFG_JS	0x00000018	/* Jitter-study:
+					 * 0 = normal operation
+					 * 1 = high-frequency test pattern
+					 * 2 = low-frequency test pattern
+					 * 3 = reserved
+					 */
+#define PCS_CFG_TO	0x00000020	/* 10ms auto-neg timer override	*/
+
+/* PCS Interrupt Status Register.  This register is self-clearing
+ * when read.
+ */
+#define PCS_ISTAT_LSC	0x00000004	/* Link Status Change		*/
+
+/* Datapath Mode Register. */
+#define PCS_DMODE_SM	0x00000001	/* 1 = use internal Serialink	*/
+#define PCS_DMODE_ESM	0x00000002	/* External SERDES mode		*/
+#define PCS_DMODE_MGM	0x00000004	/* MII/GMII mode		*/
+#define PCS_DMODE_GMOE	0x00000008	/* GMII Output Enable		*/
+
+/* Serialink Control Register.
+ *
+ * NOTE: When in SERDES mode, the loopback bit has inverse logic.
+ */
+#define PCS_SCTRL_LOOP	0x00000001	/* Loopback enable		*/
+#define PCS_SCTRL_ESCD	0x00000002	/* Enable sync char detection	*/
+#define PCS_SCTRL_LOCK	0x00000004	/* Lock to reference clock	*/
+#define PCS_SCTRL_EMP	0x00000018	/* Output driver emphasis	*/
+#define PCS_SCTRL_STEST	0x000001c0	/* Self test patterns		*/
+#define PCS_SCTRL_PDWN	0x00000200	/* Software power-down		*/
+#define PCS_SCTRL_RXZ	0x00000c00	/* PLL input to Serialink	*/
+#define PCS_SCTRL_RXP	0x00003000	/* PLL input to Serialink	*/
+#define PCS_SCTRL_TXZ	0x0000c000	/* PLL input to Serialink	*/
+#define PCS_SCTRL_TXP	0x00030000	/* PLL input to Serialink	*/
+
+/* Shared Output Select Register.  For test and debug, allows multiplexing
+ * test outputs into the PROM address pins.  Set to zero for normal
+ * operation.
+ */
+#define PCS_SOS_PADDR	0x00000003	/* PROM Address			*/
+
+/* PROM Image Space */
+#define PROM_START	0x100000UL	/* Expansion ROM run time access*/
+#define PROM_SIZE	0x0fffffUL	/* Size of ROM			*/
+#define PROM_END	0x200000UL	/* End of ROM			*/
+
+/* MII definitions missing from mii.h */
+
+#define BMCR_SPD2	0x0040		/* Gigabit enable? (bcm5411)	*/
+#define LPA_PAUSE	0x0400
+
+/* More PHY registers (specific to Broadcom models) */
+
+/* MII BCM5201 MULTIPHY interrupt register */
+#define MII_BCM5201_INTERRUPT			0x1A
+#define MII_BCM5201_INTERRUPT_INTENABLE		0x4000
+
+#define MII_BCM5201_AUXMODE2			0x1B
+#define MII_BCM5201_AUXMODE2_LOWPOWER		0x0008
+
+#define MII_BCM5201_MULTIPHY                    0x1E
+
+/* MII BCM5201 MULTIPHY register bits */
+#define MII_BCM5201_MULTIPHY_SERIALMODE         0x0002
+#define MII_BCM5201_MULTIPHY_SUPERISOLATE       0x0008
+
+/* MII BCM5400 1000-BASET Control register */
+#define MII_BCM5400_GB_CONTROL			0x09
+#define MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP	0x0200
+
+/* MII BCM5400 AUXCONTROL register */
+#define MII_BCM5400_AUXCONTROL                  0x18
+#define MII_BCM5400_AUXCONTROL_PWR10BASET       0x0004
+
+/* MII BCM5400 AUXSTATUS register */
+#define MII_BCM5400_AUXSTATUS                   0x19
+#define MII_BCM5400_AUXSTATUS_LINKMODE_MASK     0x0700
+#define MII_BCM5400_AUXSTATUS_LINKMODE_SHIFT    8
+
+/* When it can, GEM internally caches 4 aligned TX descriptors
+ * at a time, so that it can use full cacheline DMA reads.
+ *
+ * Note that unlike HME, there is no ownership bit in the descriptor
+ * control word.  The same functionality is obtained via the TX-Kick
+ * and TX-Complete registers.  As a result, GEM need not write back
+ * updated values to the TX descriptor ring, it only performs reads.
+ *
+ * Since TX descriptors are never modified by GEM, the driver can
+ * use the buffer DMA address as a place to keep track of allocated
+ * DMA mappings for a transmitted packet.
+ */
+struct gem_txd {
+	__le64	control_word;
+	__le64	buffer;
+};
+
+#define TXDCTRL_BUFSZ	0x0000000000007fffULL	/* Buffer Size		*/
+#define TXDCTRL_CSTART	0x00000000001f8000ULL	/* CSUM Start Offset	*/
+#define TXDCTRL_COFF	0x000000001fe00000ULL	/* CSUM Stuff Offset	*/
+#define TXDCTRL_CENAB	0x0000000020000000ULL	/* CSUM Enable		*/
+#define TXDCTRL_EOF	0x0000000040000000ULL	/* End of Frame		*/
+#define TXDCTRL_SOF	0x0000000080000000ULL	/* Start of Frame	*/
+#define TXDCTRL_INTME	0x0000000100000000ULL	/* "Interrupt Me"	*/
+#define TXDCTRL_NOCRC	0x0000000200000000ULL	/* No CRC Present	*/
+
+/* GEM requires that RX descriptors are provided four at a time,
+ * aligned.  Also, the RX ring may not wrap around.  This means that
+ * there will be at least 4 unused descriptor entries in the middle
+ * of the RX ring at all times.
+ *
+ * Similar to HME, GEM assumes that it can write garbage bytes before
+ * the beginning of the buffer and right after the end in order to DMA
+ * whole cachelines.
+ *
+ * Unlike for TX, GEM does update the status word in the RX descriptors
+ * when packets arrive.  Therefore an ownership bit does exist in the
+ * RX descriptors.  It is advisory, GEM clears it but does not check
+ * it in any way.  So when buffers are posted to the RX ring (via the
+ * RX Kick register) by the driver it must make sure the buffers are
+ * truly ready and that the ownership bits are set properly.
+ *
+ * Even though GEM modifies the RX descriptors, it guarantees that the
+ * buffer DMA address field will stay the same when it performs these
+ * updates.  Therefore it can be used to keep track of DMA mappings
+ * by the host driver just as in the TX descriptor case above.
+ */
+struct gem_rxd {
+	__le64	status_word;
+	__le64	buffer;
+};
+
+#define RXDCTRL_TCPCSUM	0x000000000000ffffULL	/* TCP Pseudo-CSUM	*/
+#define RXDCTRL_BUFSZ	0x000000007fff0000ULL	/* Buffer Size		*/
+#define RXDCTRL_OWN	0x0000000080000000ULL	/* GEM owns this entry	*/
+#define RXDCTRL_HASHVAL	0x0ffff00000000000ULL	/* Hash Value		*/
+#define RXDCTRL_HPASS	0x1000000000000000ULL	/* Passed Hash Filter	*/
+#define RXDCTRL_ALTMAC	0x2000000000000000ULL	/* Matched ALT MAC	*/
+#define RXDCTRL_BAD	0x4000000000000000ULL	/* Frame has bad CRC	*/
+
+#define RXDCTRL_FRESH(gp)	\
+	((((RX_BUF_ALLOC_SIZE(gp) - RX_OFFSET) << 16) & RXDCTRL_BUFSZ) | \
+	 RXDCTRL_OWN)
+
+#define TX_RING_SIZE 128
+#define RX_RING_SIZE 128
+
+#if TX_RING_SIZE == 32
+#define TXDMA_CFG_BASE	TXDMA_CFG_RINGSZ_32
+#elif TX_RING_SIZE == 64
+#define TXDMA_CFG_BASE	TXDMA_CFG_RINGSZ_64
+#elif TX_RING_SIZE == 128
+#define TXDMA_CFG_BASE	TXDMA_CFG_RINGSZ_128
+#elif TX_RING_SIZE == 256
+#define TXDMA_CFG_BASE	TXDMA_CFG_RINGSZ_256
+#elif TX_RING_SIZE == 512
+#define TXDMA_CFG_BASE	TXDMA_CFG_RINGSZ_512
+#elif TX_RING_SIZE == 1024
+#define TXDMA_CFG_BASE	TXDMA_CFG_RINGSZ_1K
+#elif TX_RING_SIZE == 2048
+#define TXDMA_CFG_BASE	TXDMA_CFG_RINGSZ_2K
+#elif TX_RING_SIZE == 4096
+#define TXDMA_CFG_BASE	TXDMA_CFG_RINGSZ_4K
+#elif TX_RING_SIZE == 8192
+#define TXDMA_CFG_BASE	TXDMA_CFG_RINGSZ_8K
+#else
+#error TX_RING_SIZE value is illegal...
+#endif
+
+#if RX_RING_SIZE == 32
+#define RXDMA_CFG_BASE	RXDMA_CFG_RINGSZ_32
+#elif RX_RING_SIZE == 64
+#define RXDMA_CFG_BASE	RXDMA_CFG_RINGSZ_64
+#elif RX_RING_SIZE == 128
+#define RXDMA_CFG_BASE	RXDMA_CFG_RINGSZ_128
+#elif RX_RING_SIZE == 256
+#define RXDMA_CFG_BASE	RXDMA_CFG_RINGSZ_256
+#elif RX_RING_SIZE == 512
+#define RXDMA_CFG_BASE	RXDMA_CFG_RINGSZ_512
+#elif RX_RING_SIZE == 1024
+#define RXDMA_CFG_BASE	RXDMA_CFG_RINGSZ_1K
+#elif RX_RING_SIZE == 2048
+#define RXDMA_CFG_BASE	RXDMA_CFG_RINGSZ_2K
+#elif RX_RING_SIZE == 4096
+#define RXDMA_CFG_BASE	RXDMA_CFG_RINGSZ_4K
+#elif RX_RING_SIZE == 8192
+#define RXDMA_CFG_BASE	RXDMA_CFG_RINGSZ_8K
+#else
+#error RX_RING_SIZE is illegal...
+#endif
+
+#define NEXT_TX(N)	(((N) + 1) & (TX_RING_SIZE - 1))
+#define NEXT_RX(N)	(((N) + 1) & (RX_RING_SIZE - 1))
+
+#define TX_BUFFS_AVAIL(GP)					\
+	(((GP)->tx_old <= (GP)->tx_new) ?			\
+	  (GP)->tx_old + (TX_RING_SIZE - 1) - (GP)->tx_new :	\
+	  (GP)->tx_old - (GP)->tx_new - 1)
+
+#define RX_OFFSET          2
+#define RX_BUF_ALLOC_SIZE(gp)	((gp)->rx_buf_sz + 28 + RX_OFFSET + 64)
+
+#define RX_COPY_THRESHOLD  256
+
+#if TX_RING_SIZE < 128
+#define INIT_BLOCK_TX_RING_SIZE		128
+#else
+#define INIT_BLOCK_TX_RING_SIZE		TX_RING_SIZE
+#endif
+
+#if RX_RING_SIZE < 128
+#define INIT_BLOCK_RX_RING_SIZE		128
+#else
+#define INIT_BLOCK_RX_RING_SIZE		RX_RING_SIZE
+#endif
+
+struct gem_init_block {
+	struct gem_txd	txd[INIT_BLOCK_TX_RING_SIZE];
+	struct gem_rxd	rxd[INIT_BLOCK_RX_RING_SIZE];
+};
+
+enum gem_phy_type {
+	phy_mii_mdio0,
+	phy_mii_mdio1,
+	phy_serialink,
+	phy_serdes,
+};
+
+enum link_state {
+	link_down = 0,	/* No link, will retry */
+	link_aneg,	/* Autoneg in progress */
+	link_force_try,	/* Try Forced link speed */
+	link_force_ret,	/* Forced mode worked, retrying autoneg */
+	link_force_ok,	/* Stay in forced mode */
+	link_up		/* Link is up */
+};
+
+struct gem {
+	void __iomem		*regs;
+	int			rx_new, rx_old;
+	int			tx_new, tx_old;
+
+	unsigned int has_wol : 1;	/* chip supports wake-on-lan */
+	unsigned int asleep_wol : 1;	/* was asleep with WOL enabled */
+
+	int			cell_enabled;
+	u32			msg_enable;
+	u32			status;
+
+	struct napi_struct	napi;
+
+	int			tx_fifo_sz;
+	int			rx_fifo_sz;
+	int			rx_pause_off;
+	int			rx_pause_on;
+	int			rx_buf_sz;
+	u64			pause_entered;
+	u16			pause_last_time_recvd;
+	u32			mac_rx_cfg;
+	u32			swrst_base;
+
+	int			want_autoneg;
+	int			last_forced_speed;
+	enum link_state		lstate;
+	struct timer_list	link_timer;
+	int			timer_ticks;
+	int			wake_on_lan;
+	struct work_struct	reset_task;
+	volatile int		reset_task_pending;
+
+	enum gem_phy_type	phy_type;
+	struct mii_phy		phy_mii;
+	int			mii_phy_addr;
+
+	struct gem_init_block	*init_block;
+	struct sk_buff		*rx_skbs[RX_RING_SIZE];
+	struct sk_buff		*tx_skbs[TX_RING_SIZE];
+	dma_addr_t		gblock_dvma;
+
+	struct pci_dev		*pdev;
+	struct net_device	*dev;
+#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_SPARC)
+	struct device_node	*of_node;
+#endif
+};
+
+#define found_mii_phy(gp) ((gp->phy_type == phy_mii_mdio0 || gp->phy_type == phy_mii_mdio1) && \
+			   gp->phy_mii.def && gp->phy_mii.def->ops)
+
+#endif /* _SUNGEM_H */
diff --git a/drivers/net/ethernet/sun/sunhme.c b/drivers/net/ethernet/sun/sunhme.c
new file mode 100644
index 000000000..882908e74
--- /dev/null
+++ b/drivers/net/ethernet/sun/sunhme.c
@@ -0,0 +1,3399 @@
+// SPDX-License-Identifier: GPL-2.0
+/* sunhme.c: Sparc HME/BigMac 10/100baseT half/full duplex auto switching,
+ *           auto carrier detecting ethernet driver.  Also known as the
+ *           "Happy Meal Ethernet" found on SunSwift SBUS cards.
+ *
+ * Copyright (C) 1996, 1998, 1999, 2002, 2003,
+ *		2006, 2008 David S. Miller (davem@davemloft.net)
+ *
+ * Changes :
+ * 2000/11/11 Willy Tarreau <willy AT meta-x.org>
+ *   - port to non-sparc architectures. Tested only on x86 and
+ *     only currently works with QFE PCI cards.
+ *   - ability to specify the MAC address at module load time by passing this
+ *     argument : macaddr=0x00,0x10,0x20,0x30,0x40,0x50
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/crc32.h>
+#include <linux/random.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/mm.h>
+#include <linux/bitops.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/byteorder.h>
+
+#ifdef CONFIG_SPARC
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <asm/idprom.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/prom.h>
+#include <asm/auxio.h>
+#endif
+#include <linux/uaccess.h>
+
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+
+#ifdef CONFIG_PCI
+#include <linux/pci.h>
+#endif
+
+#include "sunhme.h"
+
+#define DRV_NAME	"sunhme"
+#define DRV_VERSION	"3.10"
+#define DRV_RELDATE	"August 26, 2008"
+#define DRV_AUTHOR	"David S. Miller (davem@davemloft.net)"
+
+static char version[] =
+	DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "\n";
+
+MODULE_VERSION(DRV_VERSION);
+MODULE_AUTHOR(DRV_AUTHOR);
+MODULE_DESCRIPTION("Sun HappyMealEthernet(HME) 10/100baseT ethernet driver");
+MODULE_LICENSE("GPL");
+
+static int macaddr[6];
+
+/* accept MAC address of the form macaddr=0x08,0x00,0x20,0x30,0x40,0x50 */
+module_param_array(macaddr, int, NULL, 0);
+MODULE_PARM_DESC(macaddr, "Happy Meal MAC address to set");
+
+#ifdef CONFIG_SBUS
+static struct quattro *qfe_sbus_list;
+#endif
+
+#ifdef CONFIG_PCI
+static struct quattro *qfe_pci_list;
+#endif
+
+#undef HMEDEBUG
+#undef SXDEBUG
+#undef RXDEBUG
+#undef TXDEBUG
+#undef TXLOGGING
+
+#ifdef TXLOGGING
+struct hme_tx_logent {
+	unsigned int tstamp;
+	int tx_new, tx_old;
+	unsigned int action;
+#define TXLOG_ACTION_IRQ	0x01
+#define TXLOG_ACTION_TXMIT	0x02
+#define TXLOG_ACTION_TBUSY	0x04
+#define TXLOG_ACTION_NBUFS	0x08
+	unsigned int status;
+};
+#define TX_LOG_LEN	128
+static struct hme_tx_logent tx_log[TX_LOG_LEN];
+static int txlog_cur_entry;
+static __inline__ void tx_add_log(struct happy_meal *hp, unsigned int a, unsigned int s)
+{
+	struct hme_tx_logent *tlp;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	tlp = &tx_log[txlog_cur_entry];
+	tlp->tstamp = (unsigned int)jiffies;
+	tlp->tx_new = hp->tx_new;
+	tlp->tx_old = hp->tx_old;
+	tlp->action = a;
+	tlp->status = s;
+	txlog_cur_entry = (txlog_cur_entry + 1) & (TX_LOG_LEN - 1);
+	local_irq_restore(flags);
+}
+static __inline__ void tx_dump_log(void)
+{
+	int i, this;
+
+	this = txlog_cur_entry;
+	for (i = 0; i < TX_LOG_LEN; i++) {
+		printk("TXLOG[%d]: j[%08x] tx[N(%d)O(%d)] action[%08x] stat[%08x]\n", i,
+		       tx_log[this].tstamp,
+		       tx_log[this].tx_new, tx_log[this].tx_old,
+		       tx_log[this].action, tx_log[this].status);
+		this = (this + 1) & (TX_LOG_LEN - 1);
+	}
+}
+static __inline__ void tx_dump_ring(struct happy_meal *hp)
+{
+	struct hmeal_init_block *hb = hp->happy_block;
+	struct happy_meal_txd *tp = &hb->happy_meal_txd[0];
+	int i;
+
+	for (i = 0; i < TX_RING_SIZE; i+=4) {
+		printk("TXD[%d..%d]: [%08x:%08x] [%08x:%08x] [%08x:%08x] [%08x:%08x]\n",
+		       i, i + 4,
+		       le32_to_cpu(tp[i].tx_flags), le32_to_cpu(tp[i].tx_addr),
+		       le32_to_cpu(tp[i + 1].tx_flags), le32_to_cpu(tp[i + 1].tx_addr),
+		       le32_to_cpu(tp[i + 2].tx_flags), le32_to_cpu(tp[i + 2].tx_addr),
+		       le32_to_cpu(tp[i + 3].tx_flags), le32_to_cpu(tp[i + 3].tx_addr));
+	}
+}
+#else
+#define tx_add_log(hp, a, s)		do { } while(0)
+#define tx_dump_log()			do { } while(0)
+#define tx_dump_ring(hp)		do { } while(0)
+#endif
+
+#ifdef HMEDEBUG
+#define HMD(x)  printk x
+#else
+#define HMD(x)
+#endif
+
+/* #define AUTO_SWITCH_DEBUG */
+
+#ifdef AUTO_SWITCH_DEBUG
+#define ASD(x)  printk x
+#else
+#define ASD(x)
+#endif
+
+#define DEFAULT_IPG0      16 /* For lance-mode only */
+#define DEFAULT_IPG1       8 /* For all modes */
+#define DEFAULT_IPG2       4 /* For all modes */
+#define DEFAULT_JAMSIZE    4 /* Toe jam */
+
+/* NOTE: In the descriptor writes one _must_ write the address
+ *	 member _first_.  The card must not be allowed to see
+ *	 the updated descriptor flags until the address is
+ *	 correct.  I've added a write memory barrier between
+ *	 the two stores so that I can sleep well at night... -DaveM
+ */
+
+#if defined(CONFIG_SBUS) && defined(CONFIG_PCI)
+static void sbus_hme_write32(void __iomem *reg, u32 val)
+{
+	sbus_writel(val, reg);
+}
+
+static u32 sbus_hme_read32(void __iomem *reg)
+{
+	return sbus_readl(reg);
+}
+
+static void sbus_hme_write_rxd(struct happy_meal_rxd *rxd, u32 flags, u32 addr)
+{
+	rxd->rx_addr = (__force hme32)addr;
+	dma_wmb();
+	rxd->rx_flags = (__force hme32)flags;
+}
+
+static void sbus_hme_write_txd(struct happy_meal_txd *txd, u32 flags, u32 addr)
+{
+	txd->tx_addr = (__force hme32)addr;
+	dma_wmb();
+	txd->tx_flags = (__force hme32)flags;
+}
+
+static u32 sbus_hme_read_desc32(hme32 *p)
+{
+	return (__force u32)*p;
+}
+
+static void pci_hme_write32(void __iomem *reg, u32 val)
+{
+	writel(val, reg);
+}
+
+static u32 pci_hme_read32(void __iomem *reg)
+{
+	return readl(reg);
+}
+
+static void pci_hme_write_rxd(struct happy_meal_rxd *rxd, u32 flags, u32 addr)
+{
+	rxd->rx_addr = (__force hme32)cpu_to_le32(addr);
+	dma_wmb();
+	rxd->rx_flags = (__force hme32)cpu_to_le32(flags);
+}
+
+static void pci_hme_write_txd(struct happy_meal_txd *txd, u32 flags, u32 addr)
+{
+	txd->tx_addr = (__force hme32)cpu_to_le32(addr);
+	dma_wmb();
+	txd->tx_flags = (__force hme32)cpu_to_le32(flags);
+}
+
+static u32 pci_hme_read_desc32(hme32 *p)
+{
+	return le32_to_cpup((__le32 *)p);
+}
+
+#define hme_write32(__hp, __reg, __val) \
+	((__hp)->write32((__reg), (__val)))
+#define hme_read32(__hp, __reg) \
+	((__hp)->read32(__reg))
+#define hme_write_rxd(__hp, __rxd, __flags, __addr) \
+	((__hp)->write_rxd((__rxd), (__flags), (__addr)))
+#define hme_write_txd(__hp, __txd, __flags, __addr) \
+	((__hp)->write_txd((__txd), (__flags), (__addr)))
+#define hme_read_desc32(__hp, __p) \
+	((__hp)->read_desc32(__p))
+#define hme_dma_map(__hp, __ptr, __size, __dir) \
+	((__hp)->dma_map((__hp)->dma_dev, (__ptr), (__size), (__dir)))
+#define hme_dma_unmap(__hp, __addr, __size, __dir) \
+	((__hp)->dma_unmap((__hp)->dma_dev, (__addr), (__size), (__dir)))
+#define hme_dma_sync_for_cpu(__hp, __addr, __size, __dir) \
+	((__hp)->dma_sync_for_cpu((__hp)->dma_dev, (__addr), (__size), (__dir)))
+#define hme_dma_sync_for_device(__hp, __addr, __size, __dir) \
+	((__hp)->dma_sync_for_device((__hp)->dma_dev, (__addr), (__size), (__dir)))
+#else
+#ifdef CONFIG_SBUS
+/* SBUS only compilation */
+#define hme_write32(__hp, __reg, __val) \
+	sbus_writel((__val), (__reg))
+#define hme_read32(__hp, __reg) \
+	sbus_readl(__reg)
+#define hme_write_rxd(__hp, __rxd, __flags, __addr) \
+do {	(__rxd)->rx_addr = (__force hme32)(u32)(__addr); \
+	dma_wmb(); \
+	(__rxd)->rx_flags = (__force hme32)(u32)(__flags); \
+} while(0)
+#define hme_write_txd(__hp, __txd, __flags, __addr) \
+do {	(__txd)->tx_addr = (__force hme32)(u32)(__addr); \
+	dma_wmb(); \
+	(__txd)->tx_flags = (__force hme32)(u32)(__flags); \
+} while(0)
+#define hme_read_desc32(__hp, __p)	((__force u32)(hme32)*(__p))
+#define hme_dma_map(__hp, __ptr, __size, __dir) \
+	dma_map_single((__hp)->dma_dev, (__ptr), (__size), (__dir))
+#define hme_dma_unmap(__hp, __addr, __size, __dir) \
+	dma_unmap_single((__hp)->dma_dev, (__addr), (__size), (__dir))
+#define hme_dma_sync_for_cpu(__hp, __addr, __size, __dir) \
+	dma_dma_sync_single_for_cpu((__hp)->dma_dev, (__addr), (__size), (__dir))
+#define hme_dma_sync_for_device(__hp, __addr, __size, __dir) \
+	dma_dma_sync_single_for_device((__hp)->dma_dev, (__addr), (__size), (__dir))
+#else
+/* PCI only compilation */
+#define hme_write32(__hp, __reg, __val) \
+	writel((__val), (__reg))
+#define hme_read32(__hp, __reg) \
+	readl(__reg)
+#define hme_write_rxd(__hp, __rxd, __flags, __addr) \
+do {	(__rxd)->rx_addr = (__force hme32)cpu_to_le32(__addr); \
+	dma_wmb(); \
+	(__rxd)->rx_flags = (__force hme32)cpu_to_le32(__flags); \
+} while(0)
+#define hme_write_txd(__hp, __txd, __flags, __addr) \
+do {	(__txd)->tx_addr = (__force hme32)cpu_to_le32(__addr); \
+	dma_wmb(); \
+	(__txd)->tx_flags = (__force hme32)cpu_to_le32(__flags); \
+} while(0)
+static inline u32 hme_read_desc32(struct happy_meal *hp, hme32 *p)
+{
+	return le32_to_cpup((__le32 *)p);
+}
+#define hme_dma_map(__hp, __ptr, __size, __dir) \
+	pci_map_single((__hp)->dma_dev, (__ptr), (__size), (__dir))
+#define hme_dma_unmap(__hp, __addr, __size, __dir) \
+	pci_unmap_single((__hp)->dma_dev, (__addr), (__size), (__dir))
+#define hme_dma_sync_for_cpu(__hp, __addr, __size, __dir) \
+	pci_dma_sync_single_for_cpu((__hp)->dma_dev, (__addr), (__size), (__dir))
+#define hme_dma_sync_for_device(__hp, __addr, __size, __dir) \
+	pci_dma_sync_single_for_device((__hp)->dma_dev, (__addr), (__size), (__dir))
+#endif
+#endif
+
+
+/* Oh yes, the MIF BitBang is mighty fun to program.  BitBucket is more like it. */
+static void BB_PUT_BIT(struct happy_meal *hp, void __iomem *tregs, int bit)
+{
+	hme_write32(hp, tregs + TCVR_BBDATA, bit);
+	hme_write32(hp, tregs + TCVR_BBCLOCK, 0);
+	hme_write32(hp, tregs + TCVR_BBCLOCK, 1);
+}
+
+#if 0
+static u32 BB_GET_BIT(struct happy_meal *hp, void __iomem *tregs, int internal)
+{
+	u32 ret;
+
+	hme_write32(hp, tregs + TCVR_BBCLOCK, 0);
+	hme_write32(hp, tregs + TCVR_BBCLOCK, 1);
+	ret = hme_read32(hp, tregs + TCVR_CFG);
+	if (internal)
+		ret &= TCV_CFG_MDIO0;
+	else
+		ret &= TCV_CFG_MDIO1;
+
+	return ret;
+}
+#endif
+
+static u32 BB_GET_BIT2(struct happy_meal *hp, void __iomem *tregs, int internal)
+{
+	u32 retval;
+
+	hme_write32(hp, tregs + TCVR_BBCLOCK, 0);
+	udelay(1);
+	retval = hme_read32(hp, tregs + TCVR_CFG);
+	if (internal)
+		retval &= TCV_CFG_MDIO0;
+	else
+		retval &= TCV_CFG_MDIO1;
+	hme_write32(hp, tregs + TCVR_BBCLOCK, 1);
+
+	return retval;
+}
+
+#define TCVR_FAILURE      0x80000000     /* Impossible MIF read value */
+
+static int happy_meal_bb_read(struct happy_meal *hp,
+			      void __iomem *tregs, int reg)
+{
+	u32 tmp;
+	int retval = 0;
+	int i;
+
+	ASD(("happy_meal_bb_read: reg=%d ", reg));
+
+	/* Enable the MIF BitBang outputs. */
+	hme_write32(hp, tregs + TCVR_BBOENAB, 1);
+
+	/* Force BitBang into the idle state. */
+	for (i = 0; i < 32; i++)
+		BB_PUT_BIT(hp, tregs, 1);
+
+	/* Give it the read sequence. */
+	BB_PUT_BIT(hp, tregs, 0);
+	BB_PUT_BIT(hp, tregs, 1);
+	BB_PUT_BIT(hp, tregs, 1);
+	BB_PUT_BIT(hp, tregs, 0);
+
+	/* Give it the PHY address. */
+	tmp = hp->paddr & 0xff;
+	for (i = 4; i >= 0; i--)
+		BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1));
+
+	/* Tell it what register we want to read. */
+	tmp = (reg & 0xff);
+	for (i = 4; i >= 0; i--)
+		BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1));
+
+	/* Close down the MIF BitBang outputs. */
+	hme_write32(hp, tregs + TCVR_BBOENAB, 0);
+
+	/* Now read in the value. */
+	(void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal));
+	for (i = 15; i >= 0; i--)
+		retval |= BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal));
+	(void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal));
+	(void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal));
+	(void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal));
+	ASD(("value=%x\n", retval));
+	return retval;
+}
+
+static void happy_meal_bb_write(struct happy_meal *hp,
+				void __iomem *tregs, int reg,
+				unsigned short value)
+{
+	u32 tmp;
+	int i;
+
+	ASD(("happy_meal_bb_write: reg=%d value=%x\n", reg, value));
+
+	/* Enable the MIF BitBang outputs. */
+	hme_write32(hp, tregs + TCVR_BBOENAB, 1);
+
+	/* Force BitBang into the idle state. */
+	for (i = 0; i < 32; i++)
+		BB_PUT_BIT(hp, tregs, 1);
+
+	/* Give it write sequence. */
+	BB_PUT_BIT(hp, tregs, 0);
+	BB_PUT_BIT(hp, tregs, 1);
+	BB_PUT_BIT(hp, tregs, 0);
+	BB_PUT_BIT(hp, tregs, 1);
+
+	/* Give it the PHY address. */
+	tmp = (hp->paddr & 0xff);
+	for (i = 4; i >= 0; i--)
+		BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1));
+
+	/* Tell it what register we will be writing. */
+	tmp = (reg & 0xff);
+	for (i = 4; i >= 0; i--)
+		BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1));
+
+	/* Tell it to become ready for the bits. */
+	BB_PUT_BIT(hp, tregs, 1);
+	BB_PUT_BIT(hp, tregs, 0);
+
+	for (i = 15; i >= 0; i--)
+		BB_PUT_BIT(hp, tregs, ((value >> i) & 1));
+
+	/* Close down the MIF BitBang outputs. */
+	hme_write32(hp, tregs + TCVR_BBOENAB, 0);
+}
+
+#define TCVR_READ_TRIES   16
+
+static int happy_meal_tcvr_read(struct happy_meal *hp,
+				void __iomem *tregs, int reg)
+{
+	int tries = TCVR_READ_TRIES;
+	int retval;
+
+	ASD(("happy_meal_tcvr_read: reg=0x%02x ", reg));
+	if (hp->tcvr_type == none) {
+		ASD(("no transceiver, value=TCVR_FAILURE\n"));
+		return TCVR_FAILURE;
+	}
+
+	if (!(hp->happy_flags & HFLAG_FENABLE)) {
+		ASD(("doing bit bang\n"));
+		return happy_meal_bb_read(hp, tregs, reg);
+	}
+
+	hme_write32(hp, tregs + TCVR_FRAME,
+		    (FRAME_READ | (hp->paddr << 23) | ((reg & 0xff) << 18)));
+	while (!(hme_read32(hp, tregs + TCVR_FRAME) & 0x10000) && --tries)
+		udelay(20);
+	if (!tries) {
+		printk(KERN_ERR "happy meal: Aieee, transceiver MIF read bolixed\n");
+		return TCVR_FAILURE;
+	}
+	retval = hme_read32(hp, tregs + TCVR_FRAME) & 0xffff;
+	ASD(("value=%04x\n", retval));
+	return retval;
+}
+
+#define TCVR_WRITE_TRIES  16
+
+static void happy_meal_tcvr_write(struct happy_meal *hp,
+				  void __iomem *tregs, int reg,
+				  unsigned short value)
+{
+	int tries = TCVR_WRITE_TRIES;
+
+	ASD(("happy_meal_tcvr_write: reg=0x%02x value=%04x\n", reg, value));
+
+	/* Welcome to Sun Microsystems, can I take your order please? */
+	if (!(hp->happy_flags & HFLAG_FENABLE)) {
+		happy_meal_bb_write(hp, tregs, reg, value);
+		return;
+	}
+
+	/* Would you like fries with that? */
+	hme_write32(hp, tregs + TCVR_FRAME,
+		    (FRAME_WRITE | (hp->paddr << 23) |
+		     ((reg & 0xff) << 18) | (value & 0xffff)));
+	while (!(hme_read32(hp, tregs + TCVR_FRAME) & 0x10000) && --tries)
+		udelay(20);
+
+	/* Anything else? */
+	if (!tries)
+		printk(KERN_ERR "happy meal: Aieee, transceiver MIF write bolixed\n");
+
+	/* Fifty-two cents is your change, have a nice day. */
+}
+
+/* Auto negotiation.  The scheme is very simple.  We have a timer routine
+ * that keeps watching the auto negotiation process as it progresses.
+ * The DP83840 is first told to start doing it's thing, we set up the time
+ * and place the timer state machine in it's initial state.
+ *
+ * Here the timer peeks at the DP83840 status registers at each click to see
+ * if the auto negotiation has completed, we assume here that the DP83840 PHY
+ * will time out at some point and just tell us what (didn't) happen.  For
+ * complete coverage we only allow so many of the ticks at this level to run,
+ * when this has expired we print a warning message and try another strategy.
+ * This "other" strategy is to force the interface into various speed/duplex
+ * configurations and we stop when we see a link-up condition before the
+ * maximum number of "peek" ticks have occurred.
+ *
+ * Once a valid link status has been detected we configure the BigMAC and
+ * the rest of the Happy Meal to speak the most efficient protocol we could
+ * get a clean link for.  The priority for link configurations, highest first
+ * is:
+ *                 100 Base-T Full Duplex
+ *                 100 Base-T Half Duplex
+ *                 10 Base-T Full Duplex
+ *                 10 Base-T Half Duplex
+ *
+ * We start a new timer now, after a successful auto negotiation status has
+ * been detected.  This timer just waits for the link-up bit to get set in
+ * the BMCR of the DP83840.  When this occurs we print a kernel log message
+ * describing the link type in use and the fact that it is up.
+ *
+ * If a fatal error of some sort is signalled and detected in the interrupt
+ * service routine, and the chip is reset, or the link is ifconfig'd down
+ * and then back up, this entire process repeats itself all over again.
+ */
+static int try_next_permutation(struct happy_meal *hp, void __iomem *tregs)
+{
+	hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+
+	/* Downgrade from full to half duplex.  Only possible
+	 * via ethtool.
+	 */
+	if (hp->sw_bmcr & BMCR_FULLDPLX) {
+		hp->sw_bmcr &= ~(BMCR_FULLDPLX);
+		happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+		return 0;
+	}
+
+	/* Downgrade from 100 to 10. */
+	if (hp->sw_bmcr & BMCR_SPEED100) {
+		hp->sw_bmcr &= ~(BMCR_SPEED100);
+		happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+		return 0;
+	}
+
+	/* We've tried everything. */
+	return -1;
+}
+
+static void display_link_mode(struct happy_meal *hp, void __iomem *tregs)
+{
+	printk(KERN_INFO "%s: Link is up using ", hp->dev->name);
+	if (hp->tcvr_type == external)
+		printk("external ");
+	else
+		printk("internal ");
+	printk("transceiver at ");
+	hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA);
+	if (hp->sw_lpa & (LPA_100HALF | LPA_100FULL)) {
+		if (hp->sw_lpa & LPA_100FULL)
+			printk("100Mb/s, Full Duplex.\n");
+		else
+			printk("100Mb/s, Half Duplex.\n");
+	} else {
+		if (hp->sw_lpa & LPA_10FULL)
+			printk("10Mb/s, Full Duplex.\n");
+		else
+			printk("10Mb/s, Half Duplex.\n");
+	}
+}
+
+static void display_forced_link_mode(struct happy_meal *hp, void __iomem *tregs)
+{
+	printk(KERN_INFO "%s: Link has been forced up using ", hp->dev->name);
+	if (hp->tcvr_type == external)
+		printk("external ");
+	else
+		printk("internal ");
+	printk("transceiver at ");
+	hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+	if (hp->sw_bmcr & BMCR_SPEED100)
+		printk("100Mb/s, ");
+	else
+		printk("10Mb/s, ");
+	if (hp->sw_bmcr & BMCR_FULLDPLX)
+		printk("Full Duplex.\n");
+	else
+		printk("Half Duplex.\n");
+}
+
+static int set_happy_link_modes(struct happy_meal *hp, void __iomem *tregs)
+{
+	int full;
+
+	/* All we care about is making sure the bigmac tx_cfg has a
+	 * proper duplex setting.
+	 */
+	if (hp->timer_state == arbwait) {
+		hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA);
+		if (!(hp->sw_lpa & (LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL)))
+			goto no_response;
+		if (hp->sw_lpa & LPA_100FULL)
+			full = 1;
+		else if (hp->sw_lpa & LPA_100HALF)
+			full = 0;
+		else if (hp->sw_lpa & LPA_10FULL)
+			full = 1;
+		else
+			full = 0;
+	} else {
+		/* Forcing a link mode. */
+		hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+		if (hp->sw_bmcr & BMCR_FULLDPLX)
+			full = 1;
+		else
+			full = 0;
+	}
+
+	/* Before changing other bits in the tx_cfg register, and in
+	 * general any of other the TX config registers too, you
+	 * must:
+	 * 1) Clear Enable
+	 * 2) Poll with reads until that bit reads back as zero
+	 * 3) Make TX configuration changes
+	 * 4) Set Enable once more
+	 */
+	hme_write32(hp, hp->bigmacregs + BMAC_TXCFG,
+		    hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) &
+		    ~(BIGMAC_TXCFG_ENABLE));
+	while (hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) & BIGMAC_TXCFG_ENABLE)
+		barrier();
+	if (full) {
+		hp->happy_flags |= HFLAG_FULL;
+		hme_write32(hp, hp->bigmacregs + BMAC_TXCFG,
+			    hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) |
+			    BIGMAC_TXCFG_FULLDPLX);
+	} else {
+		hp->happy_flags &= ~(HFLAG_FULL);
+		hme_write32(hp, hp->bigmacregs + BMAC_TXCFG,
+			    hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) &
+			    ~(BIGMAC_TXCFG_FULLDPLX));
+	}
+	hme_write32(hp, hp->bigmacregs + BMAC_TXCFG,
+		    hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) |
+		    BIGMAC_TXCFG_ENABLE);
+	return 0;
+no_response:
+	return 1;
+}
+
+static int happy_meal_init(struct happy_meal *hp);
+
+static int is_lucent_phy(struct happy_meal *hp)
+{
+	void __iomem *tregs = hp->tcvregs;
+	unsigned short mr2, mr3;
+	int ret = 0;
+
+	mr2 = happy_meal_tcvr_read(hp, tregs, 2);
+	mr3 = happy_meal_tcvr_read(hp, tregs, 3);
+	if ((mr2 & 0xffff) == 0x0180 &&
+	    ((mr3 & 0xffff) >> 10) == 0x1d)
+		ret = 1;
+
+	return ret;
+}
+
+static void happy_meal_timer(struct timer_list *t)
+{
+	struct happy_meal *hp = from_timer(hp, t, happy_timer);
+	void __iomem *tregs = hp->tcvregs;
+	int restart_timer = 0;
+
+	spin_lock_irq(&hp->happy_lock);
+
+	hp->timer_ticks++;
+	switch(hp->timer_state) {
+	case arbwait:
+		/* Only allow for 5 ticks, thats 10 seconds and much too
+		 * long to wait for arbitration to complete.
+		 */
+		if (hp->timer_ticks >= 10) {
+			/* Enter force mode. */
+	do_force_mode:
+			hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+			printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful, trying force link mode\n",
+			       hp->dev->name);
+			hp->sw_bmcr = BMCR_SPEED100;
+			happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+			if (!is_lucent_phy(hp)) {
+				/* OK, seems we need do disable the transceiver for the first
+				 * tick to make sure we get an accurate link state at the
+				 * second tick.
+				 */
+				hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG);
+				hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB);
+				happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG, hp->sw_csconfig);
+			}
+			hp->timer_state = ltrywait;
+			hp->timer_ticks = 0;
+			restart_timer = 1;
+		} else {
+			/* Anything interesting happen? */
+			hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+			if (hp->sw_bmsr & BMSR_ANEGCOMPLETE) {
+				int ret;
+
+				/* Just what we've been waiting for... */
+				ret = set_happy_link_modes(hp, tregs);
+				if (ret) {
+					/* Ooops, something bad happened, go to force
+					 * mode.
+					 *
+					 * XXX Broken hubs which don't support 802.3u
+					 * XXX auto-negotiation make this happen as well.
+					 */
+					goto do_force_mode;
+				}
+
+				/* Success, at least so far, advance our state engine. */
+				hp->timer_state = lupwait;
+				restart_timer = 1;
+			} else {
+				restart_timer = 1;
+			}
+		}
+		break;
+
+	case lupwait:
+		/* Auto negotiation was successful and we are awaiting a
+		 * link up status.  I have decided to let this timer run
+		 * forever until some sort of error is signalled, reporting
+		 * a message to the user at 10 second intervals.
+		 */
+		hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+		if (hp->sw_bmsr & BMSR_LSTATUS) {
+			/* Wheee, it's up, display the link mode in use and put
+			 * the timer to sleep.
+			 */
+			display_link_mode(hp, tregs);
+			hp->timer_state = asleep;
+			restart_timer = 0;
+		} else {
+			if (hp->timer_ticks >= 10) {
+				printk(KERN_NOTICE "%s: Auto negotiation successful, link still "
+				       "not completely up.\n", hp->dev->name);
+				hp->timer_ticks = 0;
+				restart_timer = 1;
+			} else {
+				restart_timer = 1;
+			}
+		}
+		break;
+
+	case ltrywait:
+		/* Making the timeout here too long can make it take
+		 * annoyingly long to attempt all of the link mode
+		 * permutations, but then again this is essentially
+		 * error recovery code for the most part.
+		 */
+		hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+		hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG);
+		if (hp->timer_ticks == 1) {
+			if (!is_lucent_phy(hp)) {
+				/* Re-enable transceiver, we'll re-enable the transceiver next
+				 * tick, then check link state on the following tick.
+				 */
+				hp->sw_csconfig |= CSCONFIG_TCVDISAB;
+				happy_meal_tcvr_write(hp, tregs,
+						      DP83840_CSCONFIG, hp->sw_csconfig);
+			}
+			restart_timer = 1;
+			break;
+		}
+		if (hp->timer_ticks == 2) {
+			if (!is_lucent_phy(hp)) {
+				hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB);
+				happy_meal_tcvr_write(hp, tregs,
+						      DP83840_CSCONFIG, hp->sw_csconfig);
+			}
+			restart_timer = 1;
+			break;
+		}
+		if (hp->sw_bmsr & BMSR_LSTATUS) {
+			/* Force mode selection success. */
+			display_forced_link_mode(hp, tregs);
+			set_happy_link_modes(hp, tregs); /* XXX error? then what? */
+			hp->timer_state = asleep;
+			restart_timer = 0;
+		} else {
+			if (hp->timer_ticks >= 4) { /* 6 seconds or so... */
+				int ret;
+
+				ret = try_next_permutation(hp, tregs);
+				if (ret == -1) {
+					/* Aieee, tried them all, reset the
+					 * chip and try all over again.
+					 */
+
+					/* Let the user know... */
+					printk(KERN_NOTICE "%s: Link down, cable problem?\n",
+					       hp->dev->name);
+
+					ret = happy_meal_init(hp);
+					if (ret) {
+						/* ho hum... */
+						printk(KERN_ERR "%s: Error, cannot re-init the "
+						       "Happy Meal.\n", hp->dev->name);
+					}
+					goto out;
+				}
+				if (!is_lucent_phy(hp)) {
+					hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs,
+									       DP83840_CSCONFIG);
+					hp->sw_csconfig |= CSCONFIG_TCVDISAB;
+					happy_meal_tcvr_write(hp, tregs,
+							      DP83840_CSCONFIG, hp->sw_csconfig);
+				}
+				hp->timer_ticks = 0;
+				restart_timer = 1;
+			} else {
+				restart_timer = 1;
+			}
+		}
+		break;
+
+	case asleep:
+	default:
+		/* Can't happens.... */
+		printk(KERN_ERR "%s: Aieee, link timer is asleep but we got one anyways!\n",
+		       hp->dev->name);
+		restart_timer = 0;
+		hp->timer_ticks = 0;
+		hp->timer_state = asleep; /* foo on you */
+		break;
+	}
+
+	if (restart_timer) {
+		hp->happy_timer.expires = jiffies + ((12 * HZ)/10); /* 1.2 sec. */
+		add_timer(&hp->happy_timer);
+	}
+
+out:
+	spin_unlock_irq(&hp->happy_lock);
+}
+
+#define TX_RESET_TRIES     32
+#define RX_RESET_TRIES     32
+
+/* hp->happy_lock must be held */
+static void happy_meal_tx_reset(struct happy_meal *hp, void __iomem *bregs)
+{
+	int tries = TX_RESET_TRIES;
+
+	HMD(("happy_meal_tx_reset: reset, "));
+
+	/* Would you like to try our SMCC Delux? */
+	hme_write32(hp, bregs + BMAC_TXSWRESET, 0);
+	while ((hme_read32(hp, bregs + BMAC_TXSWRESET) & 1) && --tries)
+		udelay(20);
+
+	/* Lettuce, tomato, buggy hardware (no extra charge)? */
+	if (!tries)
+		printk(KERN_ERR "happy meal: Transceiver BigMac ATTACK!");
+
+	/* Take care. */
+	HMD(("done\n"));
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_rx_reset(struct happy_meal *hp, void __iomem *bregs)
+{
+	int tries = RX_RESET_TRIES;
+
+	HMD(("happy_meal_rx_reset: reset, "));
+
+	/* We have a special on GNU/Viking hardware bugs today. */
+	hme_write32(hp, bregs + BMAC_RXSWRESET, 0);
+	while ((hme_read32(hp, bregs + BMAC_RXSWRESET) & 1) && --tries)
+		udelay(20);
+
+	/* Will that be all? */
+	if (!tries)
+		printk(KERN_ERR "happy meal: Receiver BigMac ATTACK!");
+
+	/* Don't forget your vik_1137125_wa.  Have a nice day. */
+	HMD(("done\n"));
+}
+
+#define STOP_TRIES         16
+
+/* hp->happy_lock must be held */
+static void happy_meal_stop(struct happy_meal *hp, void __iomem *gregs)
+{
+	int tries = STOP_TRIES;
+
+	HMD(("happy_meal_stop: reset, "));
+
+	/* We're consolidating our STB products, it's your lucky day. */
+	hme_write32(hp, gregs + GREG_SWRESET, GREG_RESET_ALL);
+	while (hme_read32(hp, gregs + GREG_SWRESET) && --tries)
+		udelay(20);
+
+	/* Come back next week when we are "Sun Microelectronics". */
+	if (!tries)
+		printk(KERN_ERR "happy meal: Fry guys.");
+
+	/* Remember: "Different name, same old buggy as shit hardware." */
+	HMD(("done\n"));
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_get_counters(struct happy_meal *hp, void __iomem *bregs)
+{
+	struct net_device_stats *stats = &hp->dev->stats;
+
+	stats->rx_crc_errors += hme_read32(hp, bregs + BMAC_RCRCECTR);
+	hme_write32(hp, bregs + BMAC_RCRCECTR, 0);
+
+	stats->rx_frame_errors += hme_read32(hp, bregs + BMAC_UNALECTR);
+	hme_write32(hp, bregs + BMAC_UNALECTR, 0);
+
+	stats->rx_length_errors += hme_read32(hp, bregs + BMAC_GLECTR);
+	hme_write32(hp, bregs + BMAC_GLECTR, 0);
+
+	stats->tx_aborted_errors += hme_read32(hp, bregs + BMAC_EXCTR);
+
+	stats->collisions +=
+		(hme_read32(hp, bregs + BMAC_EXCTR) +
+		 hme_read32(hp, bregs + BMAC_LTCTR));
+	hme_write32(hp, bregs + BMAC_EXCTR, 0);
+	hme_write32(hp, bregs + BMAC_LTCTR, 0);
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_poll_stop(struct happy_meal *hp, void __iomem *tregs)
+{
+	ASD(("happy_meal_poll_stop: "));
+
+	/* If polling disabled or not polling already, nothing to do. */
+	if ((hp->happy_flags & (HFLAG_POLLENABLE | HFLAG_POLL)) !=
+	   (HFLAG_POLLENABLE | HFLAG_POLL)) {
+		HMD(("not polling, return\n"));
+		return;
+	}
+
+	/* Shut up the MIF. */
+	ASD(("were polling, mif ints off, "));
+	hme_write32(hp, tregs + TCVR_IMASK, 0xffff);
+
+	/* Turn off polling. */
+	ASD(("polling off, "));
+	hme_write32(hp, tregs + TCVR_CFG,
+		    hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_PENABLE));
+
+	/* We are no longer polling. */
+	hp->happy_flags &= ~(HFLAG_POLL);
+
+	/* Let the bits set. */
+	udelay(200);
+	ASD(("done\n"));
+}
+
+/* Only Sun can take such nice parts and fuck up the programming interface
+ * like this.  Good job guys...
+ */
+#define TCVR_RESET_TRIES       16 /* It should reset quickly        */
+#define TCVR_UNISOLATE_TRIES   32 /* Dis-isolation can take longer. */
+
+/* hp->happy_lock must be held */
+static int happy_meal_tcvr_reset(struct happy_meal *hp, void __iomem *tregs)
+{
+	u32 tconfig;
+	int result, tries = TCVR_RESET_TRIES;
+
+	tconfig = hme_read32(hp, tregs + TCVR_CFG);
+	ASD(("happy_meal_tcvr_reset: tcfg<%08lx> ", tconfig));
+	if (hp->tcvr_type == external) {
+		ASD(("external<"));
+		hme_write32(hp, tregs + TCVR_CFG, tconfig & ~(TCV_CFG_PSELECT));
+		hp->tcvr_type = internal;
+		hp->paddr = TCV_PADDR_ITX;
+		ASD(("ISOLATE,"));
+		happy_meal_tcvr_write(hp, tregs, MII_BMCR,
+				      (BMCR_LOOPBACK|BMCR_PDOWN|BMCR_ISOLATE));
+		result = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+		if (result == TCVR_FAILURE) {
+			ASD(("phyread_fail>\n"));
+			return -1;
+		}
+		ASD(("phyread_ok,PSELECT>"));
+		hme_write32(hp, tregs + TCVR_CFG, tconfig | TCV_CFG_PSELECT);
+		hp->tcvr_type = external;
+		hp->paddr = TCV_PADDR_ETX;
+	} else {
+		if (tconfig & TCV_CFG_MDIO1) {
+			ASD(("internal<PSELECT,"));
+			hme_write32(hp, tregs + TCVR_CFG, (tconfig | TCV_CFG_PSELECT));
+			ASD(("ISOLATE,"));
+			happy_meal_tcvr_write(hp, tregs, MII_BMCR,
+					      (BMCR_LOOPBACK|BMCR_PDOWN|BMCR_ISOLATE));
+			result = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+			if (result == TCVR_FAILURE) {
+				ASD(("phyread_fail>\n"));
+				return -1;
+			}
+			ASD(("phyread_ok,~PSELECT>"));
+			hme_write32(hp, tregs + TCVR_CFG, (tconfig & ~(TCV_CFG_PSELECT)));
+			hp->tcvr_type = internal;
+			hp->paddr = TCV_PADDR_ITX;
+		}
+	}
+
+	ASD(("BMCR_RESET "));
+	happy_meal_tcvr_write(hp, tregs, MII_BMCR, BMCR_RESET);
+
+	while (--tries) {
+		result = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+		if (result == TCVR_FAILURE)
+			return -1;
+		hp->sw_bmcr = result;
+		if (!(result & BMCR_RESET))
+			break;
+		udelay(20);
+	}
+	if (!tries) {
+		ASD(("BMCR RESET FAILED!\n"));
+		return -1;
+	}
+	ASD(("RESET_OK\n"));
+
+	/* Get fresh copies of the PHY registers. */
+	hp->sw_bmsr      = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+	hp->sw_physid1   = happy_meal_tcvr_read(hp, tregs, MII_PHYSID1);
+	hp->sw_physid2   = happy_meal_tcvr_read(hp, tregs, MII_PHYSID2);
+	hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE);
+
+	ASD(("UNISOLATE"));
+	hp->sw_bmcr &= ~(BMCR_ISOLATE);
+	happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+	tries = TCVR_UNISOLATE_TRIES;
+	while (--tries) {
+		result = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+		if (result == TCVR_FAILURE)
+			return -1;
+		if (!(result & BMCR_ISOLATE))
+			break;
+		udelay(20);
+	}
+	if (!tries) {
+		ASD((" FAILED!\n"));
+		return -1;
+	}
+	ASD((" SUCCESS and CSCONFIG_DFBYPASS\n"));
+	if (!is_lucent_phy(hp)) {
+		result = happy_meal_tcvr_read(hp, tregs,
+					      DP83840_CSCONFIG);
+		happy_meal_tcvr_write(hp, tregs,
+				      DP83840_CSCONFIG, (result | CSCONFIG_DFBYPASS));
+	}
+	return 0;
+}
+
+/* Figure out whether we have an internal or external transceiver.
+ *
+ * hp->happy_lock must be held
+ */
+static void happy_meal_transceiver_check(struct happy_meal *hp, void __iomem *tregs)
+{
+	unsigned long tconfig = hme_read32(hp, tregs + TCVR_CFG);
+
+	ASD(("happy_meal_transceiver_check: tcfg=%08lx ", tconfig));
+	if (hp->happy_flags & HFLAG_POLL) {
+		/* If we are polling, we must stop to get the transceiver type. */
+		ASD(("<polling> "));
+		if (hp->tcvr_type == internal) {
+			if (tconfig & TCV_CFG_MDIO1) {
+				ASD(("<internal> <poll stop> "));
+				happy_meal_poll_stop(hp, tregs);
+				hp->paddr = TCV_PADDR_ETX;
+				hp->tcvr_type = external;
+				ASD(("<external>\n"));
+				tconfig &= ~(TCV_CFG_PENABLE);
+				tconfig |= TCV_CFG_PSELECT;
+				hme_write32(hp, tregs + TCVR_CFG, tconfig);
+			}
+		} else {
+			if (hp->tcvr_type == external) {
+				ASD(("<external> "));
+				if (!(hme_read32(hp, tregs + TCVR_STATUS) >> 16)) {
+					ASD(("<poll stop> "));
+					happy_meal_poll_stop(hp, tregs);
+					hp->paddr = TCV_PADDR_ITX;
+					hp->tcvr_type = internal;
+					ASD(("<internal>\n"));
+					hme_write32(hp, tregs + TCVR_CFG,
+						    hme_read32(hp, tregs + TCVR_CFG) &
+						    ~(TCV_CFG_PSELECT));
+				}
+				ASD(("\n"));
+			} else {
+				ASD(("<none>\n"));
+			}
+		}
+	} else {
+		u32 reread = hme_read32(hp, tregs + TCVR_CFG);
+
+		/* Else we can just work off of the MDIO bits. */
+		ASD(("<not polling> "));
+		if (reread & TCV_CFG_MDIO1) {
+			hme_write32(hp, tregs + TCVR_CFG, tconfig | TCV_CFG_PSELECT);
+			hp->paddr = TCV_PADDR_ETX;
+			hp->tcvr_type = external;
+			ASD(("<external>\n"));
+		} else {
+			if (reread & TCV_CFG_MDIO0) {
+				hme_write32(hp, tregs + TCVR_CFG,
+					    tconfig & ~(TCV_CFG_PSELECT));
+				hp->paddr = TCV_PADDR_ITX;
+				hp->tcvr_type = internal;
+				ASD(("<internal>\n"));
+			} else {
+				printk(KERN_ERR "happy meal: Transceiver and a coke please.");
+				hp->tcvr_type = none; /* Grrr... */
+				ASD(("<none>\n"));
+			}
+		}
+	}
+}
+
+/* The receive ring buffers are a bit tricky to get right.  Here goes...
+ *
+ * The buffers we dma into must be 64 byte aligned.  So we use a special
+ * alloc_skb() routine for the happy meal to allocate 64 bytes more than
+ * we really need.
+ *
+ * We use skb_reserve() to align the data block we get in the skb.  We
+ * also program the etxregs->cfg register to use an offset of 2.  This
+ * imperical constant plus the ethernet header size will always leave
+ * us with a nicely aligned ip header once we pass things up to the
+ * protocol layers.
+ *
+ * The numbers work out to:
+ *
+ *         Max ethernet frame size         1518
+ *         Ethernet header size              14
+ *         Happy Meal base offset             2
+ *
+ * Say a skb data area is at 0xf001b010, and its size alloced is
+ * (ETH_FRAME_LEN + 64 + 2) = (1514 + 64 + 2) = 1580 bytes.
+ *
+ * First our alloc_skb() routine aligns the data base to a 64 byte
+ * boundary.  We now have 0xf001b040 as our skb data address.  We
+ * plug this into the receive descriptor address.
+ *
+ * Next, we skb_reserve() 2 bytes to account for the Happy Meal offset.
+ * So now the data we will end up looking at starts at 0xf001b042.  When
+ * the packet arrives, we will check out the size received and subtract
+ * this from the skb->length.  Then we just pass the packet up to the
+ * protocols as is, and allocate a new skb to replace this slot we have
+ * just received from.
+ *
+ * The ethernet layer will strip the ether header from the front of the
+ * skb we just sent to it, this leaves us with the ip header sitting
+ * nicely aligned at 0xf001b050.  Also, for tcp and udp packets the
+ * Happy Meal has even checksummed the tcp/udp data for us.  The 16
+ * bit checksum is obtained from the low bits of the receive descriptor
+ * flags, thus:
+ *
+ * 	skb->csum = rxd->rx_flags & 0xffff;
+ * 	skb->ip_summed = CHECKSUM_COMPLETE;
+ *
+ * before sending off the skb to the protocols, and we are good as gold.
+ */
+static void happy_meal_clean_rings(struct happy_meal *hp)
+{
+	int i;
+
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		if (hp->rx_skbs[i] != NULL) {
+			struct sk_buff *skb = hp->rx_skbs[i];
+			struct happy_meal_rxd *rxd;
+			u32 dma_addr;
+
+			rxd = &hp->happy_block->happy_meal_rxd[i];
+			dma_addr = hme_read_desc32(hp, &rxd->rx_addr);
+			dma_unmap_single(hp->dma_dev, dma_addr,
+					 RX_BUF_ALLOC_SIZE, DMA_FROM_DEVICE);
+			dev_kfree_skb_any(skb);
+			hp->rx_skbs[i] = NULL;
+		}
+	}
+
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		if (hp->tx_skbs[i] != NULL) {
+			struct sk_buff *skb = hp->tx_skbs[i];
+			struct happy_meal_txd *txd;
+			u32 dma_addr;
+			int frag;
+
+			hp->tx_skbs[i] = NULL;
+
+			for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
+				txd = &hp->happy_block->happy_meal_txd[i];
+				dma_addr = hme_read_desc32(hp, &txd->tx_addr);
+				if (!frag)
+					dma_unmap_single(hp->dma_dev, dma_addr,
+							 (hme_read_desc32(hp, &txd->tx_flags)
+							  & TXFLAG_SIZE),
+							 DMA_TO_DEVICE);
+				else
+					dma_unmap_page(hp->dma_dev, dma_addr,
+							 (hme_read_desc32(hp, &txd->tx_flags)
+							  & TXFLAG_SIZE),
+							 DMA_TO_DEVICE);
+
+				if (frag != skb_shinfo(skb)->nr_frags)
+					i++;
+			}
+
+			dev_kfree_skb_any(skb);
+		}
+	}
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_init_rings(struct happy_meal *hp)
+{
+	struct hmeal_init_block *hb = hp->happy_block;
+	int i;
+
+	HMD(("happy_meal_init_rings: counters to zero, "));
+	hp->rx_new = hp->rx_old = hp->tx_new = hp->tx_old = 0;
+
+	/* Free any skippy bufs left around in the rings. */
+	HMD(("clean, "));
+	happy_meal_clean_rings(hp);
+
+	/* Now get new skippy bufs for the receive ring. */
+	HMD(("init rxring, "));
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		struct sk_buff *skb;
+		u32 mapping;
+
+		skb = happy_meal_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC);
+		if (!skb) {
+			hme_write_rxd(hp, &hb->happy_meal_rxd[i], 0, 0);
+			continue;
+		}
+		hp->rx_skbs[i] = skb;
+
+		/* Because we reserve afterwards. */
+		skb_put(skb, (ETH_FRAME_LEN + RX_OFFSET + 4));
+		mapping = dma_map_single(hp->dma_dev, skb->data, RX_BUF_ALLOC_SIZE,
+					 DMA_FROM_DEVICE);
+		if (dma_mapping_error(hp->dma_dev, mapping)) {
+			dev_kfree_skb_any(skb);
+			hme_write_rxd(hp, &hb->happy_meal_rxd[i], 0, 0);
+			continue;
+		}
+		hme_write_rxd(hp, &hb->happy_meal_rxd[i],
+			      (RXFLAG_OWN | ((RX_BUF_ALLOC_SIZE - RX_OFFSET) << 16)),
+			      mapping);
+		skb_reserve(skb, RX_OFFSET);
+	}
+
+	HMD(("init txring, "));
+	for (i = 0; i < TX_RING_SIZE; i++)
+		hme_write_txd(hp, &hb->happy_meal_txd[i], 0, 0);
+
+	HMD(("done\n"));
+}
+
+/* hp->happy_lock must be held */
+static void
+happy_meal_begin_auto_negotiation(struct happy_meal *hp,
+				  void __iomem *tregs,
+				  const struct ethtool_link_ksettings *ep)
+{
+	int timeout;
+
+	/* Read all of the registers we are interested in now. */
+	hp->sw_bmsr      = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+	hp->sw_bmcr      = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+	hp->sw_physid1   = happy_meal_tcvr_read(hp, tregs, MII_PHYSID1);
+	hp->sw_physid2   = happy_meal_tcvr_read(hp, tregs, MII_PHYSID2);
+
+	/* XXX Check BMSR_ANEGCAPABLE, should not be necessary though. */
+
+	hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE);
+	if (!ep || ep->base.autoneg == AUTONEG_ENABLE) {
+		/* Advertise everything we can support. */
+		if (hp->sw_bmsr & BMSR_10HALF)
+			hp->sw_advertise |= (ADVERTISE_10HALF);
+		else
+			hp->sw_advertise &= ~(ADVERTISE_10HALF);
+
+		if (hp->sw_bmsr & BMSR_10FULL)
+			hp->sw_advertise |= (ADVERTISE_10FULL);
+		else
+			hp->sw_advertise &= ~(ADVERTISE_10FULL);
+		if (hp->sw_bmsr & BMSR_100HALF)
+			hp->sw_advertise |= (ADVERTISE_100HALF);
+		else
+			hp->sw_advertise &= ~(ADVERTISE_100HALF);
+		if (hp->sw_bmsr & BMSR_100FULL)
+			hp->sw_advertise |= (ADVERTISE_100FULL);
+		else
+			hp->sw_advertise &= ~(ADVERTISE_100FULL);
+		happy_meal_tcvr_write(hp, tregs, MII_ADVERTISE, hp->sw_advertise);
+
+		/* XXX Currently no Happy Meal cards I know off support 100BaseT4,
+		 * XXX and this is because the DP83840 does not support it, changes
+		 * XXX would need to be made to the tx/rx logic in the driver as well
+		 * XXX so I completely skip checking for it in the BMSR for now.
+		 */
+
+#ifdef AUTO_SWITCH_DEBUG
+		ASD(("%s: Advertising [ ", hp->dev->name));
+		if (hp->sw_advertise & ADVERTISE_10HALF)
+			ASD(("10H "));
+		if (hp->sw_advertise & ADVERTISE_10FULL)
+			ASD(("10F "));
+		if (hp->sw_advertise & ADVERTISE_100HALF)
+			ASD(("100H "));
+		if (hp->sw_advertise & ADVERTISE_100FULL)
+			ASD(("100F "));
+#endif
+
+		/* Enable Auto-Negotiation, this is usually on already... */
+		hp->sw_bmcr |= BMCR_ANENABLE;
+		happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+		/* Restart it to make sure it is going. */
+		hp->sw_bmcr |= BMCR_ANRESTART;
+		happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+		/* BMCR_ANRESTART self clears when the process has begun. */
+
+		timeout = 64;  /* More than enough. */
+		while (--timeout) {
+			hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+			if (!(hp->sw_bmcr & BMCR_ANRESTART))
+				break; /* got it. */
+			udelay(10);
+		}
+		if (!timeout) {
+			printk(KERN_ERR "%s: Happy Meal would not start auto negotiation "
+			       "BMCR=0x%04x\n", hp->dev->name, hp->sw_bmcr);
+			printk(KERN_NOTICE "%s: Performing force link detection.\n",
+			       hp->dev->name);
+			goto force_link;
+		} else {
+			hp->timer_state = arbwait;
+		}
+	} else {
+force_link:
+		/* Force the link up, trying first a particular mode.
+		 * Either we are here at the request of ethtool or
+		 * because the Happy Meal would not start to autoneg.
+		 */
+
+		/* Disable auto-negotiation in BMCR, enable the duplex and
+		 * speed setting, init the timer state machine, and fire it off.
+		 */
+		if (!ep || ep->base.autoneg == AUTONEG_ENABLE) {
+			hp->sw_bmcr = BMCR_SPEED100;
+		} else {
+			if (ep->base.speed == SPEED_100)
+				hp->sw_bmcr = BMCR_SPEED100;
+			else
+				hp->sw_bmcr = 0;
+			if (ep->base.duplex == DUPLEX_FULL)
+				hp->sw_bmcr |= BMCR_FULLDPLX;
+		}
+		happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+		if (!is_lucent_phy(hp)) {
+			/* OK, seems we need do disable the transceiver for the first
+			 * tick to make sure we get an accurate link state at the
+			 * second tick.
+			 */
+			hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs,
+							       DP83840_CSCONFIG);
+			hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB);
+			happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG,
+					      hp->sw_csconfig);
+		}
+		hp->timer_state = ltrywait;
+	}
+
+	hp->timer_ticks = 0;
+	hp->happy_timer.expires = jiffies + (12 * HZ)/10;  /* 1.2 sec. */
+	add_timer(&hp->happy_timer);
+}
+
+/* hp->happy_lock must be held */
+static int happy_meal_init(struct happy_meal *hp)
+{
+	void __iomem *gregs        = hp->gregs;
+	void __iomem *etxregs      = hp->etxregs;
+	void __iomem *erxregs      = hp->erxregs;
+	void __iomem *bregs        = hp->bigmacregs;
+	void __iomem *tregs        = hp->tcvregs;
+	u32 regtmp, rxcfg;
+	unsigned char *e = &hp->dev->dev_addr[0];
+
+	/* If auto-negotiation timer is running, kill it. */
+	del_timer(&hp->happy_timer);
+
+	HMD(("happy_meal_init: happy_flags[%08x] ",
+	     hp->happy_flags));
+	if (!(hp->happy_flags & HFLAG_INIT)) {
+		HMD(("set HFLAG_INIT, "));
+		hp->happy_flags |= HFLAG_INIT;
+		happy_meal_get_counters(hp, bregs);
+	}
+
+	/* Stop polling. */
+	HMD(("to happy_meal_poll_stop\n"));
+	happy_meal_poll_stop(hp, tregs);
+
+	/* Stop transmitter and receiver. */
+	HMD(("happy_meal_init: to happy_meal_stop\n"));
+	happy_meal_stop(hp, gregs);
+
+	/* Alloc and reset the tx/rx descriptor chains. */
+	HMD(("happy_meal_init: to happy_meal_init_rings\n"));
+	happy_meal_init_rings(hp);
+
+	/* Shut up the MIF. */
+	HMD(("happy_meal_init: Disable all MIF irqs (old[%08x]), ",
+	     hme_read32(hp, tregs + TCVR_IMASK)));
+	hme_write32(hp, tregs + TCVR_IMASK, 0xffff);
+
+	/* See if we can enable the MIF frame on this card to speak to the DP83840. */
+	if (hp->happy_flags & HFLAG_FENABLE) {
+		HMD(("use frame old[%08x], ",
+		     hme_read32(hp, tregs + TCVR_CFG)));
+		hme_write32(hp, tregs + TCVR_CFG,
+			    hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_BENABLE));
+	} else {
+		HMD(("use bitbang old[%08x], ",
+		     hme_read32(hp, tregs + TCVR_CFG)));
+		hme_write32(hp, tregs + TCVR_CFG,
+			    hme_read32(hp, tregs + TCVR_CFG) | TCV_CFG_BENABLE);
+	}
+
+	/* Check the state of the transceiver. */
+	HMD(("to happy_meal_transceiver_check\n"));
+	happy_meal_transceiver_check(hp, tregs);
+
+	/* Put the Big Mac into a sane state. */
+	HMD(("happy_meal_init: "));
+	switch(hp->tcvr_type) {
+	case none:
+		/* Cannot operate if we don't know the transceiver type! */
+		HMD(("AAIEEE no transceiver type, EAGAIN"));
+		return -EAGAIN;
+
+	case internal:
+		/* Using the MII buffers. */
+		HMD(("internal, using MII, "));
+		hme_write32(hp, bregs + BMAC_XIFCFG, 0);
+		break;
+
+	case external:
+		/* Not using the MII, disable it. */
+		HMD(("external, disable MII, "));
+		hme_write32(hp, bregs + BMAC_XIFCFG, BIGMAC_XCFG_MIIDISAB);
+		break;
+	}
+
+	if (happy_meal_tcvr_reset(hp, tregs))
+		return -EAGAIN;
+
+	/* Reset the Happy Meal Big Mac transceiver and the receiver. */
+	HMD(("tx/rx reset, "));
+	happy_meal_tx_reset(hp, bregs);
+	happy_meal_rx_reset(hp, bregs);
+
+	/* Set jam size and inter-packet gaps to reasonable defaults. */
+	HMD(("jsize/ipg1/ipg2, "));
+	hme_write32(hp, bregs + BMAC_JSIZE, DEFAULT_JAMSIZE);
+	hme_write32(hp, bregs + BMAC_IGAP1, DEFAULT_IPG1);
+	hme_write32(hp, bregs + BMAC_IGAP2, DEFAULT_IPG2);
+
+	/* Load up the MAC address and random seed. */
+	HMD(("rseed/macaddr, "));
+
+	/* The docs recommend to use the 10LSB of our MAC here. */
+	hme_write32(hp, bregs + BMAC_RSEED, ((e[5] | e[4]<<8)&0x3ff));
+
+	hme_write32(hp, bregs + BMAC_MACADDR2, ((e[4] << 8) | e[5]));
+	hme_write32(hp, bregs + BMAC_MACADDR1, ((e[2] << 8) | e[3]));
+	hme_write32(hp, bregs + BMAC_MACADDR0, ((e[0] << 8) | e[1]));
+
+	HMD(("htable, "));
+	if ((hp->dev->flags & IFF_ALLMULTI) ||
+	    (netdev_mc_count(hp->dev) > 64)) {
+		hme_write32(hp, bregs + BMAC_HTABLE0, 0xffff);
+		hme_write32(hp, bregs + BMAC_HTABLE1, 0xffff);
+		hme_write32(hp, bregs + BMAC_HTABLE2, 0xffff);
+		hme_write32(hp, bregs + BMAC_HTABLE3, 0xffff);
+	} else if ((hp->dev->flags & IFF_PROMISC) == 0) {
+		u16 hash_table[4];
+		struct netdev_hw_addr *ha;
+		u32 crc;
+
+		memset(hash_table, 0, sizeof(hash_table));
+		netdev_for_each_mc_addr(ha, hp->dev) {
+			crc = ether_crc_le(6, ha->addr);
+			crc >>= 26;
+			hash_table[crc >> 4] |= 1 << (crc & 0xf);
+		}
+		hme_write32(hp, bregs + BMAC_HTABLE0, hash_table[0]);
+		hme_write32(hp, bregs + BMAC_HTABLE1, hash_table[1]);
+		hme_write32(hp, bregs + BMAC_HTABLE2, hash_table[2]);
+		hme_write32(hp, bregs + BMAC_HTABLE3, hash_table[3]);
+	} else {
+		hme_write32(hp, bregs + BMAC_HTABLE3, 0);
+		hme_write32(hp, bregs + BMAC_HTABLE2, 0);
+		hme_write32(hp, bregs + BMAC_HTABLE1, 0);
+		hme_write32(hp, bregs + BMAC_HTABLE0, 0);
+	}
+
+	/* Set the RX and TX ring ptrs. */
+	HMD(("ring ptrs rxr[%08x] txr[%08x]\n",
+	     ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0)),
+	     ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_txd, 0))));
+	hme_write32(hp, erxregs + ERX_RING,
+		    ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0)));
+	hme_write32(hp, etxregs + ETX_RING,
+		    ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_txd, 0)));
+
+	/* Parity issues in the ERX unit of some HME revisions can cause some
+	 * registers to not be written unless their parity is even.  Detect such
+	 * lost writes and simply rewrite with a low bit set (which will be ignored
+	 * since the rxring needs to be 2K aligned).
+	 */
+	if (hme_read32(hp, erxregs + ERX_RING) !=
+	    ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0)))
+		hme_write32(hp, erxregs + ERX_RING,
+			    ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0))
+			    | 0x4);
+
+	/* Set the supported burst sizes. */
+	HMD(("happy_meal_init: old[%08x] bursts<",
+	     hme_read32(hp, gregs + GREG_CFG)));
+
+#ifndef CONFIG_SPARC
+	/* It is always PCI and can handle 64byte bursts. */
+	hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST64);
+#else
+	if ((hp->happy_bursts & DMA_BURST64) &&
+	    ((hp->happy_flags & HFLAG_PCI) != 0
+#ifdef CONFIG_SBUS
+	     || sbus_can_burst64()
+#endif
+	     || 0)) {
+		u32 gcfg = GREG_CFG_BURST64;
+
+		/* I have no idea if I should set the extended
+		 * transfer mode bit for Cheerio, so for now I
+		 * do not.  -DaveM
+		 */
+#ifdef CONFIG_SBUS
+		if ((hp->happy_flags & HFLAG_PCI) == 0) {
+			struct platform_device *op = hp->happy_dev;
+			if (sbus_can_dma_64bit()) {
+				sbus_set_sbus64(&op->dev,
+						hp->happy_bursts);
+				gcfg |= GREG_CFG_64BIT;
+			}
+		}
+#endif
+
+		HMD(("64>"));
+		hme_write32(hp, gregs + GREG_CFG, gcfg);
+	} else if (hp->happy_bursts & DMA_BURST32) {
+		HMD(("32>"));
+		hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST32);
+	} else if (hp->happy_bursts & DMA_BURST16) {
+		HMD(("16>"));
+		hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST16);
+	} else {
+		HMD(("XXX>"));
+		hme_write32(hp, gregs + GREG_CFG, 0);
+	}
+#endif /* CONFIG_SPARC */
+
+	/* Turn off interrupts we do not want to hear. */
+	HMD((", enable global interrupts, "));
+	hme_write32(hp, gregs + GREG_IMASK,
+		    (GREG_IMASK_GOTFRAME | GREG_IMASK_RCNTEXP |
+		     GREG_IMASK_SENTFRAME | GREG_IMASK_TXPERR));
+
+	/* Set the transmit ring buffer size. */
+	HMD(("tx rsize=%d oreg[%08x], ", (int)TX_RING_SIZE,
+	     hme_read32(hp, etxregs + ETX_RSIZE)));
+	hme_write32(hp, etxregs + ETX_RSIZE, (TX_RING_SIZE >> ETX_RSIZE_SHIFT) - 1);
+
+	/* Enable transmitter DVMA. */
+	HMD(("tx dma enable old[%08x], ",
+	     hme_read32(hp, etxregs + ETX_CFG)));
+	hme_write32(hp, etxregs + ETX_CFG,
+		    hme_read32(hp, etxregs + ETX_CFG) | ETX_CFG_DMAENABLE);
+
+	/* This chip really rots, for the receiver sometimes when you
+	 * write to its control registers not all the bits get there
+	 * properly.  I cannot think of a sane way to provide complete
+	 * coverage for this hardware bug yet.
+	 */
+	HMD(("erx regs bug old[%08x]\n",
+	     hme_read32(hp, erxregs + ERX_CFG)));
+	hme_write32(hp, erxregs + ERX_CFG, ERX_CFG_DEFAULT(RX_OFFSET));
+	regtmp = hme_read32(hp, erxregs + ERX_CFG);
+	hme_write32(hp, erxregs + ERX_CFG, ERX_CFG_DEFAULT(RX_OFFSET));
+	if (hme_read32(hp, erxregs + ERX_CFG) != ERX_CFG_DEFAULT(RX_OFFSET)) {
+		printk(KERN_ERR "happy meal: Eieee, rx config register gets greasy fries.\n");
+		printk(KERN_ERR "happy meal: Trying to set %08x, reread gives %08x\n",
+		       ERX_CFG_DEFAULT(RX_OFFSET), regtmp);
+		/* XXX Should return failure here... */
+	}
+
+	/* Enable Big Mac hash table filter. */
+	HMD(("happy_meal_init: enable hash rx_cfg_old[%08x], ",
+	     hme_read32(hp, bregs + BMAC_RXCFG)));
+	rxcfg = BIGMAC_RXCFG_HENABLE | BIGMAC_RXCFG_REJME;
+	if (hp->dev->flags & IFF_PROMISC)
+		rxcfg |= BIGMAC_RXCFG_PMISC;
+	hme_write32(hp, bregs + BMAC_RXCFG, rxcfg);
+
+	/* Let the bits settle in the chip. */
+	udelay(10);
+
+	/* Ok, configure the Big Mac transmitter. */
+	HMD(("BIGMAC init, "));
+	regtmp = 0;
+	if (hp->happy_flags & HFLAG_FULL)
+		regtmp |= BIGMAC_TXCFG_FULLDPLX;
+
+	/* Don't turn on the "don't give up" bit for now.  It could cause hme
+	 * to deadlock with the PHY if a Jabber occurs.
+	 */
+	hme_write32(hp, bregs + BMAC_TXCFG, regtmp /*| BIGMAC_TXCFG_DGIVEUP*/);
+
+	/* Give up after 16 TX attempts. */
+	hme_write32(hp, bregs + BMAC_ALIMIT, 16);
+
+	/* Enable the output drivers no matter what. */
+	regtmp = BIGMAC_XCFG_ODENABLE;
+
+	/* If card can do lance mode, enable it. */
+	if (hp->happy_flags & HFLAG_LANCE)
+		regtmp |= (DEFAULT_IPG0 << 5) | BIGMAC_XCFG_LANCE;
+
+	/* Disable the MII buffers if using external transceiver. */
+	if (hp->tcvr_type == external)
+		regtmp |= BIGMAC_XCFG_MIIDISAB;
+
+	HMD(("XIF config old[%08x], ",
+	     hme_read32(hp, bregs + BMAC_XIFCFG)));
+	hme_write32(hp, bregs + BMAC_XIFCFG, regtmp);
+
+	/* Start things up. */
+	HMD(("tx old[%08x] and rx [%08x] ON!\n",
+	     hme_read32(hp, bregs + BMAC_TXCFG),
+	     hme_read32(hp, bregs + BMAC_RXCFG)));
+
+	/* Set larger TX/RX size to allow for 802.1q */
+	hme_write32(hp, bregs + BMAC_TXMAX, ETH_FRAME_LEN + 8);
+	hme_write32(hp, bregs + BMAC_RXMAX, ETH_FRAME_LEN + 8);
+
+	hme_write32(hp, bregs + BMAC_TXCFG,
+		    hme_read32(hp, bregs + BMAC_TXCFG) | BIGMAC_TXCFG_ENABLE);
+	hme_write32(hp, bregs + BMAC_RXCFG,
+		    hme_read32(hp, bregs + BMAC_RXCFG) | BIGMAC_RXCFG_ENABLE);
+
+	/* Get the autonegotiation started, and the watch timer ticking. */
+	happy_meal_begin_auto_negotiation(hp, tregs, NULL);
+
+	/* Success. */
+	return 0;
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_set_initial_advertisement(struct happy_meal *hp)
+{
+	void __iomem *tregs	= hp->tcvregs;
+	void __iomem *bregs	= hp->bigmacregs;
+	void __iomem *gregs	= hp->gregs;
+
+	happy_meal_stop(hp, gregs);
+	hme_write32(hp, tregs + TCVR_IMASK, 0xffff);
+	if (hp->happy_flags & HFLAG_FENABLE)
+		hme_write32(hp, tregs + TCVR_CFG,
+			    hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_BENABLE));
+	else
+		hme_write32(hp, tregs + TCVR_CFG,
+			    hme_read32(hp, tregs + TCVR_CFG) | TCV_CFG_BENABLE);
+	happy_meal_transceiver_check(hp, tregs);
+	switch(hp->tcvr_type) {
+	case none:
+		return;
+	case internal:
+		hme_write32(hp, bregs + BMAC_XIFCFG, 0);
+		break;
+	case external:
+		hme_write32(hp, bregs + BMAC_XIFCFG, BIGMAC_XCFG_MIIDISAB);
+		break;
+	}
+	if (happy_meal_tcvr_reset(hp, tregs))
+		return;
+
+	/* Latch PHY registers as of now. */
+	hp->sw_bmsr      = happy_meal_tcvr_read(hp, tregs, MII_BMSR);
+	hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE);
+
+	/* Advertise everything we can support. */
+	if (hp->sw_bmsr & BMSR_10HALF)
+		hp->sw_advertise |= (ADVERTISE_10HALF);
+	else
+		hp->sw_advertise &= ~(ADVERTISE_10HALF);
+
+	if (hp->sw_bmsr & BMSR_10FULL)
+		hp->sw_advertise |= (ADVERTISE_10FULL);
+	else
+		hp->sw_advertise &= ~(ADVERTISE_10FULL);
+	if (hp->sw_bmsr & BMSR_100HALF)
+		hp->sw_advertise |= (ADVERTISE_100HALF);
+	else
+		hp->sw_advertise &= ~(ADVERTISE_100HALF);
+	if (hp->sw_bmsr & BMSR_100FULL)
+		hp->sw_advertise |= (ADVERTISE_100FULL);
+	else
+		hp->sw_advertise &= ~(ADVERTISE_100FULL);
+
+	/* Update the PHY advertisement register. */
+	happy_meal_tcvr_write(hp, tregs, MII_ADVERTISE, hp->sw_advertise);
+}
+
+/* Once status is latched (by happy_meal_interrupt) it is cleared by
+ * the hardware, so we cannot re-read it and get a correct value.
+ *
+ * hp->happy_lock must be held
+ */
+static int happy_meal_is_not_so_happy(struct happy_meal *hp, u32 status)
+{
+	int reset = 0;
+
+	/* Only print messages for non-counter related interrupts. */
+	if (status & (GREG_STAT_STSTERR | GREG_STAT_TFIFO_UND |
+		      GREG_STAT_MAXPKTERR | GREG_STAT_RXERR |
+		      GREG_STAT_RXPERR | GREG_STAT_RXTERR | GREG_STAT_EOPERR |
+		      GREG_STAT_MIFIRQ | GREG_STAT_TXEACK | GREG_STAT_TXLERR |
+		      GREG_STAT_TXPERR | GREG_STAT_TXTERR | GREG_STAT_SLVERR |
+		      GREG_STAT_SLVPERR))
+		printk(KERN_ERR "%s: Error interrupt for happy meal, status = %08x\n",
+		       hp->dev->name, status);
+
+	if (status & GREG_STAT_RFIFOVF) {
+		/* Receive FIFO overflow is harmless and the hardware will take
+		   care of it, just some packets are lost. Who cares. */
+		printk(KERN_DEBUG "%s: Happy Meal receive FIFO overflow.\n", hp->dev->name);
+	}
+
+	if (status & GREG_STAT_STSTERR) {
+		/* BigMAC SQE link test failed. */
+		printk(KERN_ERR "%s: Happy Meal BigMAC SQE test failed.\n", hp->dev->name);
+		reset = 1;
+	}
+
+	if (status & GREG_STAT_TFIFO_UND) {
+		/* Transmit FIFO underrun, again DMA error likely. */
+		printk(KERN_ERR "%s: Happy Meal transmitter FIFO underrun, DMA error.\n",
+		       hp->dev->name);
+		reset = 1;
+	}
+
+	if (status & GREG_STAT_MAXPKTERR) {
+		/* Driver error, tried to transmit something larger
+		 * than ethernet max mtu.
+		 */
+		printk(KERN_ERR "%s: Happy Meal MAX Packet size error.\n", hp->dev->name);
+		reset = 1;
+	}
+
+	if (status & GREG_STAT_NORXD) {
+		/* This is harmless, it just means the system is
+		 * quite loaded and the incoming packet rate was
+		 * faster than the interrupt handler could keep up
+		 * with.
+		 */
+		printk(KERN_INFO "%s: Happy Meal out of receive "
+		       "descriptors, packet dropped.\n",
+		       hp->dev->name);
+	}
+
+	if (status & (GREG_STAT_RXERR|GREG_STAT_RXPERR|GREG_STAT_RXTERR)) {
+		/* All sorts of DMA receive errors. */
+		printk(KERN_ERR "%s: Happy Meal rx DMA errors [ ", hp->dev->name);
+		if (status & GREG_STAT_RXERR)
+			printk("GenericError ");
+		if (status & GREG_STAT_RXPERR)
+			printk("ParityError ");
+		if (status & GREG_STAT_RXTERR)
+			printk("RxTagBotch ");
+		printk("]\n");
+		reset = 1;
+	}
+
+	if (status & GREG_STAT_EOPERR) {
+		/* Driver bug, didn't set EOP bit in tx descriptor given
+		 * to the happy meal.
+		 */
+		printk(KERN_ERR "%s: EOP not set in happy meal transmit descriptor!\n",
+		       hp->dev->name);
+		reset = 1;
+	}
+
+	if (status & GREG_STAT_MIFIRQ) {
+		/* MIF signalled an interrupt, were we polling it? */
+		printk(KERN_ERR "%s: Happy Meal MIF interrupt.\n", hp->dev->name);
+	}
+
+	if (status &
+	    (GREG_STAT_TXEACK|GREG_STAT_TXLERR|GREG_STAT_TXPERR|GREG_STAT_TXTERR)) {
+		/* All sorts of transmit DMA errors. */
+		printk(KERN_ERR "%s: Happy Meal tx DMA errors [ ", hp->dev->name);
+		if (status & GREG_STAT_TXEACK)
+			printk("GenericError ");
+		if (status & GREG_STAT_TXLERR)
+			printk("LateError ");
+		if (status & GREG_STAT_TXPERR)
+			printk("ParityError ");
+		if (status & GREG_STAT_TXTERR)
+			printk("TagBotch ");
+		printk("]\n");
+		reset = 1;
+	}
+
+	if (status & (GREG_STAT_SLVERR|GREG_STAT_SLVPERR)) {
+		/* Bus or parity error when cpu accessed happy meal registers
+		 * or it's internal FIFO's.  Should never see this.
+		 */
+		printk(KERN_ERR "%s: Happy Meal register access SBUS slave (%s) error.\n",
+		       hp->dev->name,
+		       (status & GREG_STAT_SLVPERR) ? "parity" : "generic");
+		reset = 1;
+	}
+
+	if (reset) {
+		printk(KERN_NOTICE "%s: Resetting...\n", hp->dev->name);
+		happy_meal_init(hp);
+		return 1;
+	}
+	return 0;
+}
+
+/* hp->happy_lock must be held */
+static void happy_meal_mif_interrupt(struct happy_meal *hp)
+{
+	void __iomem *tregs = hp->tcvregs;
+
+	printk(KERN_INFO "%s: Link status change.\n", hp->dev->name);
+	hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR);
+	hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA);
+
+	/* Use the fastest transmission protocol possible. */
+	if (hp->sw_lpa & LPA_100FULL) {
+		printk(KERN_INFO "%s: Switching to 100Mbps at full duplex.", hp->dev->name);
+		hp->sw_bmcr |= (BMCR_FULLDPLX | BMCR_SPEED100);
+	} else if (hp->sw_lpa & LPA_100HALF) {
+		printk(KERN_INFO "%s: Switching to 100MBps at half duplex.", hp->dev->name);
+		hp->sw_bmcr |= BMCR_SPEED100;
+	} else if (hp->sw_lpa & LPA_10FULL) {
+		printk(KERN_INFO "%s: Switching to 10MBps at full duplex.", hp->dev->name);
+		hp->sw_bmcr |= BMCR_FULLDPLX;
+	} else {
+		printk(KERN_INFO "%s: Using 10Mbps at half duplex.", hp->dev->name);
+	}
+	happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr);
+
+	/* Finally stop polling and shut up the MIF. */
+	happy_meal_poll_stop(hp, tregs);
+}
+
+#ifdef TXDEBUG
+#define TXD(x) printk x
+#else
+#define TXD(x)
+#endif
+
+/* hp->happy_lock must be held */
+static void happy_meal_tx(struct happy_meal *hp)
+{
+	struct happy_meal_txd *txbase = &hp->happy_block->happy_meal_txd[0];
+	struct happy_meal_txd *this;
+	struct net_device *dev = hp->dev;
+	int elem;
+
+	elem = hp->tx_old;
+	TXD(("TX<"));
+	while (elem != hp->tx_new) {
+		struct sk_buff *skb;
+		u32 flags, dma_addr, dma_len;
+		int frag;
+
+		TXD(("[%d]", elem));
+		this = &txbase[elem];
+		flags = hme_read_desc32(hp, &this->tx_flags);
+		if (flags & TXFLAG_OWN)
+			break;
+		skb = hp->tx_skbs[elem];
+		if (skb_shinfo(skb)->nr_frags) {
+			int last;
+
+			last = elem + skb_shinfo(skb)->nr_frags;
+			last &= (TX_RING_SIZE - 1);
+			flags = hme_read_desc32(hp, &txbase[last].tx_flags);
+			if (flags & TXFLAG_OWN)
+				break;
+		}
+		hp->tx_skbs[elem] = NULL;
+		dev->stats.tx_bytes += skb->len;
+
+		for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
+			dma_addr = hme_read_desc32(hp, &this->tx_addr);
+			dma_len = hme_read_desc32(hp, &this->tx_flags);
+
+			dma_len &= TXFLAG_SIZE;
+			if (!frag)
+				dma_unmap_single(hp->dma_dev, dma_addr, dma_len, DMA_TO_DEVICE);
+			else
+				dma_unmap_page(hp->dma_dev, dma_addr, dma_len, DMA_TO_DEVICE);
+
+			elem = NEXT_TX(elem);
+			this = &txbase[elem];
+		}
+
+		dev_kfree_skb_irq(skb);
+		dev->stats.tx_packets++;
+	}
+	hp->tx_old = elem;
+	TXD((">"));
+
+	if (netif_queue_stopped(dev) &&
+	    TX_BUFFS_AVAIL(hp) > (MAX_SKB_FRAGS + 1))
+		netif_wake_queue(dev);
+}
+
+#ifdef RXDEBUG
+#define RXD(x) printk x
+#else
+#define RXD(x)
+#endif
+
+/* Originally I used to handle the allocation failure by just giving back just
+ * that one ring buffer to the happy meal.  Problem is that usually when that
+ * condition is triggered, the happy meal expects you to do something reasonable
+ * with all of the packets it has DMA'd in.  So now I just drop the entire
+ * ring when we cannot get a new skb and give them all back to the happy meal,
+ * maybe things will be "happier" now.
+ *
+ * hp->happy_lock must be held
+ */
+static void happy_meal_rx(struct happy_meal *hp, struct net_device *dev)
+{
+	struct happy_meal_rxd *rxbase = &hp->happy_block->happy_meal_rxd[0];
+	struct happy_meal_rxd *this;
+	int elem = hp->rx_new, drops = 0;
+	u32 flags;
+
+	RXD(("RX<"));
+	this = &rxbase[elem];
+	while (!((flags = hme_read_desc32(hp, &this->rx_flags)) & RXFLAG_OWN)) {
+		struct sk_buff *skb;
+		int len = flags >> 16;
+		u16 csum = flags & RXFLAG_CSUM;
+		u32 dma_addr = hme_read_desc32(hp, &this->rx_addr);
+
+		RXD(("[%d ", elem));
+
+		/* Check for errors. */
+		if ((len < ETH_ZLEN) || (flags & RXFLAG_OVERFLOW)) {
+			RXD(("ERR(%08x)]", flags));
+			dev->stats.rx_errors++;
+			if (len < ETH_ZLEN)
+				dev->stats.rx_length_errors++;
+			if (len & (RXFLAG_OVERFLOW >> 16)) {
+				dev->stats.rx_over_errors++;
+				dev->stats.rx_fifo_errors++;
+			}
+
+			/* Return it to the Happy meal. */
+	drop_it:
+			dev->stats.rx_dropped++;
+			hme_write_rxd(hp, this,
+				      (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)),
+				      dma_addr);
+			goto next;
+		}
+		skb = hp->rx_skbs[elem];
+		if (len > RX_COPY_THRESHOLD) {
+			struct sk_buff *new_skb;
+			u32 mapping;
+
+			/* Now refill the entry, if we can. */
+			new_skb = happy_meal_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC);
+			if (new_skb == NULL) {
+				drops++;
+				goto drop_it;
+			}
+			skb_put(new_skb, (ETH_FRAME_LEN + RX_OFFSET + 4));
+			mapping = dma_map_single(hp->dma_dev, new_skb->data,
+						 RX_BUF_ALLOC_SIZE,
+						 DMA_FROM_DEVICE);
+			if (unlikely(dma_mapping_error(hp->dma_dev, mapping))) {
+				dev_kfree_skb_any(new_skb);
+				drops++;
+				goto drop_it;
+			}
+
+			dma_unmap_single(hp->dma_dev, dma_addr, RX_BUF_ALLOC_SIZE, DMA_FROM_DEVICE);
+			hp->rx_skbs[elem] = new_skb;
+			hme_write_rxd(hp, this,
+				      (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)),
+				      mapping);
+			skb_reserve(new_skb, RX_OFFSET);
+
+			/* Trim the original skb for the netif. */
+			skb_trim(skb, len);
+		} else {
+			struct sk_buff *copy_skb = netdev_alloc_skb(dev, len + 2);
+
+			if (copy_skb == NULL) {
+				drops++;
+				goto drop_it;
+			}
+
+			skb_reserve(copy_skb, 2);
+			skb_put(copy_skb, len);
+			dma_sync_single_for_cpu(hp->dma_dev, dma_addr, len, DMA_FROM_DEVICE);
+			skb_copy_from_linear_data(skb, copy_skb->data, len);
+			dma_sync_single_for_device(hp->dma_dev, dma_addr, len, DMA_FROM_DEVICE);
+			/* Reuse original ring buffer. */
+			hme_write_rxd(hp, this,
+				      (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)),
+				      dma_addr);
+
+			skb = copy_skb;
+		}
+
+		/* This card is _fucking_ hot... */
+		skb->csum = csum_unfold(~(__force __sum16)htons(csum));
+		skb->ip_summed = CHECKSUM_COMPLETE;
+
+		RXD(("len=%d csum=%4x]", len, csum));
+		skb->protocol = eth_type_trans(skb, dev);
+		netif_rx(skb);
+
+		dev->stats.rx_packets++;
+		dev->stats.rx_bytes += len;
+	next:
+		elem = NEXT_RX(elem);
+		this = &rxbase[elem];
+	}
+	hp->rx_new = elem;
+	if (drops)
+		printk(KERN_INFO "%s: Memory squeeze, deferring packet.\n", hp->dev->name);
+	RXD((">"));
+}
+
+static irqreturn_t happy_meal_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct happy_meal *hp  = netdev_priv(dev);
+	u32 happy_status       = hme_read32(hp, hp->gregs + GREG_STAT);
+
+	HMD(("happy_meal_interrupt: status=%08x ", happy_status));
+
+	spin_lock(&hp->happy_lock);
+
+	if (happy_status & GREG_STAT_ERRORS) {
+		HMD(("ERRORS "));
+		if (happy_meal_is_not_so_happy(hp, /* un- */ happy_status))
+			goto out;
+	}
+
+	if (happy_status & GREG_STAT_MIFIRQ) {
+		HMD(("MIFIRQ "));
+		happy_meal_mif_interrupt(hp);
+	}
+
+	if (happy_status & GREG_STAT_TXALL) {
+		HMD(("TXALL "));
+		happy_meal_tx(hp);
+	}
+
+	if (happy_status & GREG_STAT_RXTOHOST) {
+		HMD(("RXTOHOST "));
+		happy_meal_rx(hp, dev);
+	}
+
+	HMD(("done\n"));
+out:
+	spin_unlock(&hp->happy_lock);
+
+	return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_SBUS
+static irqreturn_t quattro_sbus_interrupt(int irq, void *cookie)
+{
+	struct quattro *qp = (struct quattro *) cookie;
+	int i;
+
+	for (i = 0; i < 4; i++) {
+		struct net_device *dev = qp->happy_meals[i];
+		struct happy_meal *hp  = netdev_priv(dev);
+		u32 happy_status       = hme_read32(hp, hp->gregs + GREG_STAT);
+
+		HMD(("quattro_interrupt: status=%08x ", happy_status));
+
+		if (!(happy_status & (GREG_STAT_ERRORS |
+				      GREG_STAT_MIFIRQ |
+				      GREG_STAT_TXALL |
+				      GREG_STAT_RXTOHOST)))
+			continue;
+
+		spin_lock(&hp->happy_lock);
+
+		if (happy_status & GREG_STAT_ERRORS) {
+			HMD(("ERRORS "));
+			if (happy_meal_is_not_so_happy(hp, happy_status))
+				goto next;
+		}
+
+		if (happy_status & GREG_STAT_MIFIRQ) {
+			HMD(("MIFIRQ "));
+			happy_meal_mif_interrupt(hp);
+		}
+
+		if (happy_status & GREG_STAT_TXALL) {
+			HMD(("TXALL "));
+			happy_meal_tx(hp);
+		}
+
+		if (happy_status & GREG_STAT_RXTOHOST) {
+			HMD(("RXTOHOST "));
+			happy_meal_rx(hp, dev);
+		}
+
+	next:
+		spin_unlock(&hp->happy_lock);
+	}
+	HMD(("done\n"));
+
+	return IRQ_HANDLED;
+}
+#endif
+
+static int happy_meal_open(struct net_device *dev)
+{
+	struct happy_meal *hp = netdev_priv(dev);
+	int res;
+
+	HMD(("happy_meal_open: "));
+
+	/* On SBUS Quattro QFE cards, all hme interrupts are concentrated
+	 * into a single source which we register handling at probe time.
+	 */
+	if ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO) {
+		res = request_irq(hp->irq, happy_meal_interrupt, IRQF_SHARED,
+				  dev->name, dev);
+		if (res) {
+			HMD(("EAGAIN\n"));
+			printk(KERN_ERR "happy_meal(SBUS): Can't order irq %d to go.\n",
+			       hp->irq);
+
+			return -EAGAIN;
+		}
+	}
+
+	HMD(("to happy_meal_init\n"));
+
+	spin_lock_irq(&hp->happy_lock);
+	res = happy_meal_init(hp);
+	spin_unlock_irq(&hp->happy_lock);
+
+	if (res && ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO))
+		free_irq(hp->irq, dev);
+	return res;
+}
+
+static int happy_meal_close(struct net_device *dev)
+{
+	struct happy_meal *hp = netdev_priv(dev);
+
+	spin_lock_irq(&hp->happy_lock);
+	happy_meal_stop(hp, hp->gregs);
+	happy_meal_clean_rings(hp);
+
+	/* If auto-negotiation timer is running, kill it. */
+	del_timer(&hp->happy_timer);
+
+	spin_unlock_irq(&hp->happy_lock);
+
+	/* On Quattro QFE cards, all hme interrupts are concentrated
+	 * into a single source which we register handling at probe
+	 * time and never unregister.
+	 */
+	if ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO)
+		free_irq(hp->irq, dev);
+
+	return 0;
+}
+
+#ifdef SXDEBUG
+#define SXD(x) printk x
+#else
+#define SXD(x)
+#endif
+
+static void happy_meal_tx_timeout(struct net_device *dev)
+{
+	struct happy_meal *hp = netdev_priv(dev);
+
+	printk (KERN_ERR "%s: transmit timed out, resetting\n", dev->name);
+	tx_dump_log();
+	printk (KERN_ERR "%s: Happy Status %08x TX[%08x:%08x]\n", dev->name,
+		hme_read32(hp, hp->gregs + GREG_STAT),
+		hme_read32(hp, hp->etxregs + ETX_CFG),
+		hme_read32(hp, hp->bigmacregs + BMAC_TXCFG));
+
+	spin_lock_irq(&hp->happy_lock);
+	happy_meal_init(hp);
+	spin_unlock_irq(&hp->happy_lock);
+
+	netif_wake_queue(dev);
+}
+
+static void unmap_partial_tx_skb(struct happy_meal *hp, u32 first_mapping,
+				 u32 first_len, u32 first_entry, u32 entry)
+{
+	struct happy_meal_txd *txbase = &hp->happy_block->happy_meal_txd[0];
+
+	dma_unmap_single(hp->dma_dev, first_mapping, first_len, DMA_TO_DEVICE);
+
+	first_entry = NEXT_TX(first_entry);
+	while (first_entry != entry) {
+		struct happy_meal_txd *this = &txbase[first_entry];
+		u32 addr, len;
+
+		addr = hme_read_desc32(hp, &this->tx_addr);
+		len = hme_read_desc32(hp, &this->tx_flags);
+		len &= TXFLAG_SIZE;
+		dma_unmap_page(hp->dma_dev, addr, len, DMA_TO_DEVICE);
+	}
+}
+
+static netdev_tx_t happy_meal_start_xmit(struct sk_buff *skb,
+					 struct net_device *dev)
+{
+	struct happy_meal *hp = netdev_priv(dev);
+ 	int entry;
+ 	u32 tx_flags;
+
+	tx_flags = TXFLAG_OWN;
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		const u32 csum_start_off = skb_checksum_start_offset(skb);
+		const u32 csum_stuff_off = csum_start_off + skb->csum_offset;
+
+		tx_flags = (TXFLAG_OWN | TXFLAG_CSENABLE |
+			    ((csum_start_off << 14) & TXFLAG_CSBUFBEGIN) |
+			    ((csum_stuff_off << 20) & TXFLAG_CSLOCATION));
+	}
+
+	spin_lock_irq(&hp->happy_lock);
+
+ 	if (TX_BUFFS_AVAIL(hp) <= (skb_shinfo(skb)->nr_frags + 1)) {
+		netif_stop_queue(dev);
+		spin_unlock_irq(&hp->happy_lock);
+		printk(KERN_ERR "%s: BUG! Tx Ring full when queue awake!\n",
+		       dev->name);
+		return NETDEV_TX_BUSY;
+	}
+
+	entry = hp->tx_new;
+	SXD(("SX<l[%d]e[%d]>", len, entry));
+	hp->tx_skbs[entry] = skb;
+
+	if (skb_shinfo(skb)->nr_frags == 0) {
+		u32 mapping, len;
+
+		len = skb->len;
+		mapping = dma_map_single(hp->dma_dev, skb->data, len, DMA_TO_DEVICE);
+		if (unlikely(dma_mapping_error(hp->dma_dev, mapping)))
+			goto out_dma_error;
+		tx_flags |= (TXFLAG_SOP | TXFLAG_EOP);
+		hme_write_txd(hp, &hp->happy_block->happy_meal_txd[entry],
+			      (tx_flags | (len & TXFLAG_SIZE)),
+			      mapping);
+		entry = NEXT_TX(entry);
+	} else {
+		u32 first_len, first_mapping;
+		int frag, first_entry = entry;
+
+		/* We must give this initial chunk to the device last.
+		 * Otherwise we could race with the device.
+		 */
+		first_len = skb_headlen(skb);
+		first_mapping = dma_map_single(hp->dma_dev, skb->data, first_len,
+					       DMA_TO_DEVICE);
+		if (unlikely(dma_mapping_error(hp->dma_dev, first_mapping)))
+			goto out_dma_error;
+		entry = NEXT_TX(entry);
+
+		for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
+			const skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
+			u32 len, mapping, this_txflags;
+
+			len = skb_frag_size(this_frag);
+			mapping = skb_frag_dma_map(hp->dma_dev, this_frag,
+						   0, len, DMA_TO_DEVICE);
+			if (unlikely(dma_mapping_error(hp->dma_dev, mapping))) {
+				unmap_partial_tx_skb(hp, first_mapping, first_len,
+						     first_entry, entry);
+				goto out_dma_error;
+			}
+			this_txflags = tx_flags;
+			if (frag == skb_shinfo(skb)->nr_frags - 1)
+				this_txflags |= TXFLAG_EOP;
+			hme_write_txd(hp, &hp->happy_block->happy_meal_txd[entry],
+				      (this_txflags | (len & TXFLAG_SIZE)),
+				      mapping);
+			entry = NEXT_TX(entry);
+		}
+		hme_write_txd(hp, &hp->happy_block->happy_meal_txd[first_entry],
+			      (tx_flags | TXFLAG_SOP | (first_len & TXFLAG_SIZE)),
+			      first_mapping);
+	}
+
+	hp->tx_new = entry;
+
+	if (TX_BUFFS_AVAIL(hp) <= (MAX_SKB_FRAGS + 1))
+		netif_stop_queue(dev);
+
+	/* Get it going. */
+	hme_write32(hp, hp->etxregs + ETX_PENDING, ETX_TP_DMAWAKEUP);
+
+	spin_unlock_irq(&hp->happy_lock);
+
+	tx_add_log(hp, TXLOG_ACTION_TXMIT, 0);
+	return NETDEV_TX_OK;
+
+out_dma_error:
+	hp->tx_skbs[hp->tx_new] = NULL;
+	spin_unlock_irq(&hp->happy_lock);
+
+	dev_kfree_skb_any(skb);
+	dev->stats.tx_dropped++;
+	return NETDEV_TX_OK;
+}
+
+static struct net_device_stats *happy_meal_get_stats(struct net_device *dev)
+{
+	struct happy_meal *hp = netdev_priv(dev);
+
+	spin_lock_irq(&hp->happy_lock);
+	happy_meal_get_counters(hp, hp->bigmacregs);
+	spin_unlock_irq(&hp->happy_lock);
+
+	return &dev->stats;
+}
+
+static void happy_meal_set_multicast(struct net_device *dev)
+{
+	struct happy_meal *hp = netdev_priv(dev);
+	void __iomem *bregs = hp->bigmacregs;
+	struct netdev_hw_addr *ha;
+	u32 crc;
+
+	spin_lock_irq(&hp->happy_lock);
+
+	if ((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) {
+		hme_write32(hp, bregs + BMAC_HTABLE0, 0xffff);
+		hme_write32(hp, bregs + BMAC_HTABLE1, 0xffff);
+		hme_write32(hp, bregs + BMAC_HTABLE2, 0xffff);
+		hme_write32(hp, bregs + BMAC_HTABLE3, 0xffff);
+	} else if (dev->flags & IFF_PROMISC) {
+		hme_write32(hp, bregs + BMAC_RXCFG,
+			    hme_read32(hp, bregs + BMAC_RXCFG) | BIGMAC_RXCFG_PMISC);
+	} else {
+		u16 hash_table[4];
+
+		memset(hash_table, 0, sizeof(hash_table));
+		netdev_for_each_mc_addr(ha, dev) {
+			crc = ether_crc_le(6, ha->addr);
+			crc >>= 26;
+			hash_table[crc >> 4] |= 1 << (crc & 0xf);
+		}
+		hme_write32(hp, bregs + BMAC_HTABLE0, hash_table[0]);
+		hme_write32(hp, bregs + BMAC_HTABLE1, hash_table[1]);
+		hme_write32(hp, bregs + BMAC_HTABLE2, hash_table[2]);
+		hme_write32(hp, bregs + BMAC_HTABLE3, hash_table[3]);
+	}
+
+	spin_unlock_irq(&hp->happy_lock);
+}
+
+/* Ethtool support... */
+static int hme_get_link_ksettings(struct net_device *dev,
+				  struct ethtool_link_ksettings *cmd)
+{
+	struct happy_meal *hp = netdev_priv(dev);
+	u32 speed;
+	u32 supported;
+
+	supported =
+		(SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
+		 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
+		 SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
+
+	/* XXX hardcoded stuff for now */
+	cmd->base.port = PORT_TP; /* XXX no MII support */
+	cmd->base.phy_address = 0; /* XXX fixed PHYAD */
+
+	/* Record PHY settings. */
+	spin_lock_irq(&hp->happy_lock);
+	hp->sw_bmcr = happy_meal_tcvr_read(hp, hp->tcvregs, MII_BMCR);
+	hp->sw_lpa = happy_meal_tcvr_read(hp, hp->tcvregs, MII_LPA);
+	spin_unlock_irq(&hp->happy_lock);
+
+	if (hp->sw_bmcr & BMCR_ANENABLE) {
+		cmd->base.autoneg = AUTONEG_ENABLE;
+		speed = ((hp->sw_lpa & (LPA_100HALF | LPA_100FULL)) ?
+			 SPEED_100 : SPEED_10);
+		if (speed == SPEED_100)
+			cmd->base.duplex =
+				(hp->sw_lpa & (LPA_100FULL)) ?
+				DUPLEX_FULL : DUPLEX_HALF;
+		else
+			cmd->base.duplex =
+				(hp->sw_lpa & (LPA_10FULL)) ?
+				DUPLEX_FULL : DUPLEX_HALF;
+	} else {
+		cmd->base.autoneg = AUTONEG_DISABLE;
+		speed = (hp->sw_bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10;
+		cmd->base.duplex =
+			(hp->sw_bmcr & BMCR_FULLDPLX) ?
+			DUPLEX_FULL : DUPLEX_HALF;
+	}
+	cmd->base.speed = speed;
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
+						supported);
+
+	return 0;
+}
+
+static int hme_set_link_ksettings(struct net_device *dev,
+				  const struct ethtool_link_ksettings *cmd)
+{
+	struct happy_meal *hp = netdev_priv(dev);
+
+	/* Verify the settings we care about. */
+	if (cmd->base.autoneg != AUTONEG_ENABLE &&
+	    cmd->base.autoneg != AUTONEG_DISABLE)
+		return -EINVAL;
+	if (cmd->base.autoneg == AUTONEG_DISABLE &&
+	    ((cmd->base.speed != SPEED_100 &&
+	      cmd->base.speed != SPEED_10) ||
+	     (cmd->base.duplex != DUPLEX_HALF &&
+	      cmd->base.duplex != DUPLEX_FULL)))
+		return -EINVAL;
+
+	/* Ok, do it to it. */
+	spin_lock_irq(&hp->happy_lock);
+	del_timer(&hp->happy_timer);
+	happy_meal_begin_auto_negotiation(hp, hp->tcvregs, cmd);
+	spin_unlock_irq(&hp->happy_lock);
+
+	return 0;
+}
+
+static void hme_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	struct happy_meal *hp = netdev_priv(dev);
+
+	strlcpy(info->driver, "sunhme", sizeof(info->driver));
+	strlcpy(info->version, "2.02", sizeof(info->version));
+	if (hp->happy_flags & HFLAG_PCI) {
+		struct pci_dev *pdev = hp->happy_dev;
+		strlcpy(info->bus_info, pci_name(pdev), sizeof(info->bus_info));
+	}
+#ifdef CONFIG_SBUS
+	else {
+		const struct linux_prom_registers *regs;
+		struct platform_device *op = hp->happy_dev;
+		regs = of_get_property(op->dev.of_node, "regs", NULL);
+		if (regs)
+			snprintf(info->bus_info, sizeof(info->bus_info),
+				"SBUS:%d",
+				regs->which_io);
+	}
+#endif
+}
+
+static u32 hme_get_link(struct net_device *dev)
+{
+	struct happy_meal *hp = netdev_priv(dev);
+
+	spin_lock_irq(&hp->happy_lock);
+	hp->sw_bmcr = happy_meal_tcvr_read(hp, hp->tcvregs, MII_BMCR);
+	spin_unlock_irq(&hp->happy_lock);
+
+	return hp->sw_bmsr & BMSR_LSTATUS;
+}
+
+static const struct ethtool_ops hme_ethtool_ops = {
+	.get_drvinfo		= hme_get_drvinfo,
+	.get_link		= hme_get_link,
+	.get_link_ksettings	= hme_get_link_ksettings,
+	.set_link_ksettings	= hme_set_link_ksettings,
+};
+
+static int hme_version_printed;
+
+#ifdef CONFIG_SBUS
+/* Given a happy meal sbus device, find it's quattro parent.
+ * If none exist, allocate and return a new one.
+ *
+ * Return NULL on failure.
+ */
+static struct quattro *quattro_sbus_find(struct platform_device *child)
+{
+	struct device *parent = child->dev.parent;
+	struct platform_device *op;
+	struct quattro *qp;
+
+	op = to_platform_device(parent);
+	qp = platform_get_drvdata(op);
+	if (qp)
+		return qp;
+
+	qp = kmalloc(sizeof(struct quattro), GFP_KERNEL);
+	if (qp != NULL) {
+		int i;
+
+		for (i = 0; i < 4; i++)
+			qp->happy_meals[i] = NULL;
+
+		qp->quattro_dev = child;
+		qp->next = qfe_sbus_list;
+		qfe_sbus_list = qp;
+
+		platform_set_drvdata(op, qp);
+	}
+	return qp;
+}
+
+/* After all quattro cards have been probed, we call these functions
+ * to register the IRQ handlers for the cards that have been
+ * successfully probed and skip the cards that failed to initialize
+ */
+static int __init quattro_sbus_register_irqs(void)
+{
+	struct quattro *qp;
+
+	for (qp = qfe_sbus_list; qp != NULL; qp = qp->next) {
+		struct platform_device *op = qp->quattro_dev;
+		int err, qfe_slot, skip = 0;
+
+		for (qfe_slot = 0; qfe_slot < 4; qfe_slot++) {
+			if (!qp->happy_meals[qfe_slot])
+				skip = 1;
+		}
+		if (skip)
+			continue;
+
+		err = request_irq(op->archdata.irqs[0],
+				  quattro_sbus_interrupt,
+				  IRQF_SHARED, "Quattro",
+				  qp);
+		if (err != 0) {
+			printk(KERN_ERR "Quattro HME: IRQ registration "
+			       "error %d.\n", err);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+static void quattro_sbus_free_irqs(void)
+{
+	struct quattro *qp;
+
+	for (qp = qfe_sbus_list; qp != NULL; qp = qp->next) {
+		struct platform_device *op = qp->quattro_dev;
+		int qfe_slot, skip = 0;
+
+		for (qfe_slot = 0; qfe_slot < 4; qfe_slot++) {
+			if (!qp->happy_meals[qfe_slot])
+				skip = 1;
+		}
+		if (skip)
+			continue;
+
+		free_irq(op->archdata.irqs[0], qp);
+	}
+}
+#endif /* CONFIG_SBUS */
+
+#ifdef CONFIG_PCI
+static struct quattro *quattro_pci_find(struct pci_dev *pdev)
+{
+	struct pci_dev *bdev = pdev->bus->self;
+	struct quattro *qp;
+
+	if (!bdev) return NULL;
+	for (qp = qfe_pci_list; qp != NULL; qp = qp->next) {
+		struct pci_dev *qpdev = qp->quattro_dev;
+
+		if (qpdev == bdev)
+			return qp;
+	}
+	qp = kmalloc(sizeof(struct quattro), GFP_KERNEL);
+	if (qp != NULL) {
+		int i;
+
+		for (i = 0; i < 4; i++)
+			qp->happy_meals[i] = NULL;
+
+		qp->quattro_dev = bdev;
+		qp->next = qfe_pci_list;
+		qfe_pci_list = qp;
+
+		/* No range tricks necessary on PCI. */
+		qp->nranges = 0;
+	}
+	return qp;
+}
+#endif /* CONFIG_PCI */
+
+static const struct net_device_ops hme_netdev_ops = {
+	.ndo_open		= happy_meal_open,
+	.ndo_stop		= happy_meal_close,
+	.ndo_start_xmit		= happy_meal_start_xmit,
+	.ndo_tx_timeout		= happy_meal_tx_timeout,
+	.ndo_get_stats		= happy_meal_get_stats,
+	.ndo_set_rx_mode	= happy_meal_set_multicast,
+	.ndo_set_mac_address 	= eth_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+};
+
+#ifdef CONFIG_SBUS
+static int happy_meal_sbus_probe_one(struct platform_device *op, int is_qfe)
+{
+	struct device_node *dp = op->dev.of_node, *sbus_dp;
+	struct quattro *qp = NULL;
+	struct happy_meal *hp;
+	struct net_device *dev;
+	int i, qfe_slot = -1;
+	int err = -ENODEV;
+
+	sbus_dp = op->dev.parent->of_node;
+
+	/* We can match PCI devices too, do not accept those here. */
+	if (strcmp(sbus_dp->name, "sbus") && strcmp(sbus_dp->name, "sbi"))
+		return err;
+
+	if (is_qfe) {
+		qp = quattro_sbus_find(op);
+		if (qp == NULL)
+			goto err_out;
+		for (qfe_slot = 0; qfe_slot < 4; qfe_slot++)
+			if (qp->happy_meals[qfe_slot] == NULL)
+				break;
+		if (qfe_slot == 4)
+			goto err_out;
+	}
+
+	err = -ENOMEM;
+	dev = alloc_etherdev(sizeof(struct happy_meal));
+	if (!dev)
+		goto err_out;
+	SET_NETDEV_DEV(dev, &op->dev);
+
+	if (hme_version_printed++ == 0)
+		printk(KERN_INFO "%s", version);
+
+	/* If user did not specify a MAC address specifically, use
+	 * the Quattro local-mac-address property...
+	 */
+	for (i = 0; i < 6; i++) {
+		if (macaddr[i] != 0)
+			break;
+	}
+	if (i < 6) { /* a mac address was given */
+		for (i = 0; i < 6; i++)
+			dev->dev_addr[i] = macaddr[i];
+		macaddr[5]++;
+	} else {
+		const unsigned char *addr;
+		int len;
+
+		addr = of_get_property(dp, "local-mac-address", &len);
+
+		if (qfe_slot != -1 && addr && len == ETH_ALEN)
+			memcpy(dev->dev_addr, addr, ETH_ALEN);
+		else
+			memcpy(dev->dev_addr, idprom->id_ethaddr, ETH_ALEN);
+	}
+
+	hp = netdev_priv(dev);
+
+	hp->happy_dev = op;
+	hp->dma_dev = &op->dev;
+
+	spin_lock_init(&hp->happy_lock);
+
+	err = -ENODEV;
+	if (qp != NULL) {
+		hp->qfe_parent = qp;
+		hp->qfe_ent = qfe_slot;
+		qp->happy_meals[qfe_slot] = dev;
+	}
+
+	hp->gregs = of_ioremap(&op->resource[0], 0,
+			       GREG_REG_SIZE, "HME Global Regs");
+	if (!hp->gregs) {
+		printk(KERN_ERR "happymeal: Cannot map global registers.\n");
+		goto err_out_free_netdev;
+	}
+
+	hp->etxregs = of_ioremap(&op->resource[1], 0,
+				 ETX_REG_SIZE, "HME TX Regs");
+	if (!hp->etxregs) {
+		printk(KERN_ERR "happymeal: Cannot map MAC TX registers.\n");
+		goto err_out_iounmap;
+	}
+
+	hp->erxregs = of_ioremap(&op->resource[2], 0,
+				 ERX_REG_SIZE, "HME RX Regs");
+	if (!hp->erxregs) {
+		printk(KERN_ERR "happymeal: Cannot map MAC RX registers.\n");
+		goto err_out_iounmap;
+	}
+
+	hp->bigmacregs = of_ioremap(&op->resource[3], 0,
+				    BMAC_REG_SIZE, "HME BIGMAC Regs");
+	if (!hp->bigmacregs) {
+		printk(KERN_ERR "happymeal: Cannot map BIGMAC registers.\n");
+		goto err_out_iounmap;
+	}
+
+	hp->tcvregs = of_ioremap(&op->resource[4], 0,
+				 TCVR_REG_SIZE, "HME Tranceiver Regs");
+	if (!hp->tcvregs) {
+		printk(KERN_ERR "happymeal: Cannot map TCVR registers.\n");
+		goto err_out_iounmap;
+	}
+
+	hp->hm_revision = of_getintprop_default(dp, "hm-rev", 0xff);
+	if (hp->hm_revision == 0xff)
+		hp->hm_revision = 0xa0;
+
+	/* Now enable the feature flags we can. */
+	if (hp->hm_revision == 0x20 || hp->hm_revision == 0x21)
+		hp->happy_flags = HFLAG_20_21;
+	else if (hp->hm_revision != 0xa0)
+		hp->happy_flags = HFLAG_NOT_A0;
+
+	if (qp != NULL)
+		hp->happy_flags |= HFLAG_QUATTRO;
+
+	/* Get the supported DVMA burst sizes from our Happy SBUS. */
+	hp->happy_bursts = of_getintprop_default(sbus_dp,
+						 "burst-sizes", 0x00);
+
+	hp->happy_block = dma_alloc_coherent(hp->dma_dev,
+					     PAGE_SIZE,
+					     &hp->hblock_dvma,
+					     GFP_ATOMIC);
+	err = -ENOMEM;
+	if (!hp->happy_block)
+		goto err_out_iounmap;
+
+	/* Force check of the link first time we are brought up. */
+	hp->linkcheck = 0;
+
+	/* Force timer state to 'asleep' with count of zero. */
+	hp->timer_state = asleep;
+	hp->timer_ticks = 0;
+
+	timer_setup(&hp->happy_timer, happy_meal_timer, 0);
+
+	hp->dev = dev;
+	dev->netdev_ops = &hme_netdev_ops;
+	dev->watchdog_timeo = 5*HZ;
+	dev->ethtool_ops = &hme_ethtool_ops;
+
+	/* Happy Meal can do it all... */
+	dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM;
+	dev->features |= dev->hw_features | NETIF_F_RXCSUM;
+
+	hp->irq = op->archdata.irqs[0];
+
+#if defined(CONFIG_SBUS) && defined(CONFIG_PCI)
+	/* Hook up SBUS register/descriptor accessors. */
+	hp->read_desc32 = sbus_hme_read_desc32;
+	hp->write_txd = sbus_hme_write_txd;
+	hp->write_rxd = sbus_hme_write_rxd;
+	hp->read32 = sbus_hme_read32;
+	hp->write32 = sbus_hme_write32;
+#endif
+
+	/* Grrr, Happy Meal comes up by default not advertising
+	 * full duplex 100baseT capabilities, fix this.
+	 */
+	spin_lock_irq(&hp->happy_lock);
+	happy_meal_set_initial_advertisement(hp);
+	spin_unlock_irq(&hp->happy_lock);
+
+	err = register_netdev(hp->dev);
+	if (err) {
+		printk(KERN_ERR "happymeal: Cannot register net device, "
+		       "aborting.\n");
+		goto err_out_free_coherent;
+	}
+
+	platform_set_drvdata(op, hp);
+
+	if (qfe_slot != -1)
+		printk(KERN_INFO "%s: Quattro HME slot %d (SBUS) 10/100baseT Ethernet ",
+		       dev->name, qfe_slot);
+	else
+		printk(KERN_INFO "%s: HAPPY MEAL (SBUS) 10/100baseT Ethernet ",
+		       dev->name);
+
+	printk("%pM\n", dev->dev_addr);
+
+	return 0;
+
+err_out_free_coherent:
+	dma_free_coherent(hp->dma_dev,
+			  PAGE_SIZE,
+			  hp->happy_block,
+			  hp->hblock_dvma);
+
+err_out_iounmap:
+	if (hp->gregs)
+		of_iounmap(&op->resource[0], hp->gregs, GREG_REG_SIZE);
+	if (hp->etxregs)
+		of_iounmap(&op->resource[1], hp->etxregs, ETX_REG_SIZE);
+	if (hp->erxregs)
+		of_iounmap(&op->resource[2], hp->erxregs, ERX_REG_SIZE);
+	if (hp->bigmacregs)
+		of_iounmap(&op->resource[3], hp->bigmacregs, BMAC_REG_SIZE);
+	if (hp->tcvregs)
+		of_iounmap(&op->resource[4], hp->tcvregs, TCVR_REG_SIZE);
+
+	if (qp)
+		qp->happy_meals[qfe_slot] = NULL;
+
+err_out_free_netdev:
+	free_netdev(dev);
+
+err_out:
+	return err;
+}
+#endif
+
+#ifdef CONFIG_PCI
+#ifndef CONFIG_SPARC
+static int is_quattro_p(struct pci_dev *pdev)
+{
+	struct pci_dev *busdev = pdev->bus->self;
+	struct pci_dev *this_pdev;
+	int n_hmes;
+
+	if (busdev == NULL ||
+	    busdev->vendor != PCI_VENDOR_ID_DEC ||
+	    busdev->device != PCI_DEVICE_ID_DEC_21153)
+		return 0;
+
+	n_hmes = 0;
+	list_for_each_entry(this_pdev, &pdev->bus->devices, bus_list) {
+		if (this_pdev->vendor == PCI_VENDOR_ID_SUN &&
+		    this_pdev->device == PCI_DEVICE_ID_SUN_HAPPYMEAL)
+			n_hmes++;
+	}
+
+	if (n_hmes != 4)
+		return 0;
+
+	return 1;
+}
+
+/* Fetch MAC address from vital product data of PCI ROM. */
+static int find_eth_addr_in_vpd(void __iomem *rom_base, int len, int index, unsigned char *dev_addr)
+{
+	int this_offset;
+
+	for (this_offset = 0x20; this_offset < len; this_offset++) {
+		void __iomem *p = rom_base + this_offset;
+
+		if (readb(p + 0) != 0x90 ||
+		    readb(p + 1) != 0x00 ||
+		    readb(p + 2) != 0x09 ||
+		    readb(p + 3) != 0x4e ||
+		    readb(p + 4) != 0x41 ||
+		    readb(p + 5) != 0x06)
+			continue;
+
+		this_offset += 6;
+		p += 6;
+
+		if (index == 0) {
+			int i;
+
+			for (i = 0; i < 6; i++)
+				dev_addr[i] = readb(p + i);
+			return 1;
+		}
+		index--;
+	}
+	return 0;
+}
+
+static void get_hme_mac_nonsparc(struct pci_dev *pdev, unsigned char *dev_addr)
+{
+	size_t size;
+	void __iomem *p = pci_map_rom(pdev, &size);
+
+	if (p) {
+		int index = 0;
+		int found;
+
+		if (is_quattro_p(pdev))
+			index = PCI_SLOT(pdev->devfn);
+
+		found = readb(p) == 0x55 &&
+			readb(p + 1) == 0xaa &&
+			find_eth_addr_in_vpd(p, (64 * 1024), index, dev_addr);
+		pci_unmap_rom(pdev, p);
+		if (found)
+			return;
+	}
+
+	/* Sun MAC prefix then 3 random bytes. */
+	dev_addr[0] = 0x08;
+	dev_addr[1] = 0x00;
+	dev_addr[2] = 0x20;
+	get_random_bytes(&dev_addr[3], 3);
+}
+#endif /* !(CONFIG_SPARC) */
+
+static int happy_meal_pci_probe(struct pci_dev *pdev,
+				const struct pci_device_id *ent)
+{
+	struct quattro *qp = NULL;
+#ifdef CONFIG_SPARC
+	struct device_node *dp;
+#endif
+	struct happy_meal *hp;
+	struct net_device *dev;
+	void __iomem *hpreg_base;
+	unsigned long hpreg_res;
+	int i, qfe_slot = -1;
+	char prom_name[64];
+	int err;
+
+	/* Now make sure pci_dev cookie is there. */
+#ifdef CONFIG_SPARC
+	dp = pci_device_to_OF_node(pdev);
+	strcpy(prom_name, dp->name);
+#else
+	if (is_quattro_p(pdev))
+		strcpy(prom_name, "SUNW,qfe");
+	else
+		strcpy(prom_name, "SUNW,hme");
+#endif
+
+	err = -ENODEV;
+
+	if (pci_enable_device(pdev))
+		goto err_out;
+	pci_set_master(pdev);
+
+	if (!strcmp(prom_name, "SUNW,qfe") || !strcmp(prom_name, "qfe")) {
+		qp = quattro_pci_find(pdev);
+		if (qp == NULL)
+			goto err_out;
+		for (qfe_slot = 0; qfe_slot < 4; qfe_slot++)
+			if (qp->happy_meals[qfe_slot] == NULL)
+				break;
+		if (qfe_slot == 4)
+			goto err_out;
+	}
+
+	dev = alloc_etherdev(sizeof(struct happy_meal));
+	err = -ENOMEM;
+	if (!dev)
+		goto err_out;
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+	if (hme_version_printed++ == 0)
+		printk(KERN_INFO "%s", version);
+
+	hp = netdev_priv(dev);
+
+	hp->happy_dev = pdev;
+	hp->dma_dev = &pdev->dev;
+
+	spin_lock_init(&hp->happy_lock);
+
+	if (qp != NULL) {
+		hp->qfe_parent = qp;
+		hp->qfe_ent = qfe_slot;
+		qp->happy_meals[qfe_slot] = dev;
+	}
+
+	hpreg_res = pci_resource_start(pdev, 0);
+	err = -ENODEV;
+	if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) {
+		printk(KERN_ERR "happymeal(PCI): Cannot find proper PCI device base address.\n");
+		goto err_out_clear_quattro;
+	}
+	if (pci_request_regions(pdev, DRV_NAME)) {
+		printk(KERN_ERR "happymeal(PCI): Cannot obtain PCI resources, "
+		       "aborting.\n");
+		goto err_out_clear_quattro;
+	}
+
+	if ((hpreg_base = ioremap(hpreg_res, 0x8000)) == NULL) {
+		printk(KERN_ERR "happymeal(PCI): Unable to remap card memory.\n");
+		goto err_out_free_res;
+	}
+
+	for (i = 0; i < 6; i++) {
+		if (macaddr[i] != 0)
+			break;
+	}
+	if (i < 6) { /* a mac address was given */
+		for (i = 0; i < 6; i++)
+			dev->dev_addr[i] = macaddr[i];
+		macaddr[5]++;
+	} else {
+#ifdef CONFIG_SPARC
+		const unsigned char *addr;
+		int len;
+
+		if (qfe_slot != -1 &&
+		    (addr = of_get_property(dp, "local-mac-address", &len))
+			!= NULL &&
+		    len == 6) {
+			memcpy(dev->dev_addr, addr, ETH_ALEN);
+		} else {
+			memcpy(dev->dev_addr, idprom->id_ethaddr, ETH_ALEN);
+		}
+#else
+		get_hme_mac_nonsparc(pdev, &dev->dev_addr[0]);
+#endif
+	}
+
+	/* Layout registers. */
+	hp->gregs      = (hpreg_base + 0x0000UL);
+	hp->etxregs    = (hpreg_base + 0x2000UL);
+	hp->erxregs    = (hpreg_base + 0x4000UL);
+	hp->bigmacregs = (hpreg_base + 0x6000UL);
+	hp->tcvregs    = (hpreg_base + 0x7000UL);
+
+#ifdef CONFIG_SPARC
+	hp->hm_revision = of_getintprop_default(dp, "hm-rev", 0xff);
+	if (hp->hm_revision == 0xff)
+		hp->hm_revision = 0xc0 | (pdev->revision & 0x0f);
+#else
+	/* works with this on non-sparc hosts */
+	hp->hm_revision = 0x20;
+#endif
+
+	/* Now enable the feature flags we can. */
+	if (hp->hm_revision == 0x20 || hp->hm_revision == 0x21)
+		hp->happy_flags = HFLAG_20_21;
+	else if (hp->hm_revision != 0xa0 && hp->hm_revision != 0xc0)
+		hp->happy_flags = HFLAG_NOT_A0;
+
+	if (qp != NULL)
+		hp->happy_flags |= HFLAG_QUATTRO;
+
+	/* And of course, indicate this is PCI. */
+	hp->happy_flags |= HFLAG_PCI;
+
+#ifdef CONFIG_SPARC
+	/* Assume PCI happy meals can handle all burst sizes. */
+	hp->happy_bursts = DMA_BURSTBITS;
+#endif
+
+	hp->happy_block = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
+					     &hp->hblock_dvma, GFP_KERNEL);
+	err = -ENODEV;
+	if (!hp->happy_block)
+		goto err_out_iounmap;
+
+	hp->linkcheck = 0;
+	hp->timer_state = asleep;
+	hp->timer_ticks = 0;
+
+	timer_setup(&hp->happy_timer, happy_meal_timer, 0);
+
+	hp->irq = pdev->irq;
+	hp->dev = dev;
+	dev->netdev_ops = &hme_netdev_ops;
+	dev->watchdog_timeo = 5*HZ;
+	dev->ethtool_ops = &hme_ethtool_ops;
+
+	/* Happy Meal can do it all... */
+	dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM;
+	dev->features |= dev->hw_features | NETIF_F_RXCSUM;
+
+#if defined(CONFIG_SBUS) && defined(CONFIG_PCI)
+	/* Hook up PCI register/descriptor accessors. */
+	hp->read_desc32 = pci_hme_read_desc32;
+	hp->write_txd = pci_hme_write_txd;
+	hp->write_rxd = pci_hme_write_rxd;
+	hp->read32 = pci_hme_read32;
+	hp->write32 = pci_hme_write32;
+#endif
+
+	/* Grrr, Happy Meal comes up by default not advertising
+	 * full duplex 100baseT capabilities, fix this.
+	 */
+	spin_lock_irq(&hp->happy_lock);
+	happy_meal_set_initial_advertisement(hp);
+	spin_unlock_irq(&hp->happy_lock);
+
+	err = register_netdev(hp->dev);
+	if (err) {
+		printk(KERN_ERR "happymeal(PCI): Cannot register net device, "
+		       "aborting.\n");
+		goto err_out_free_coherent;
+	}
+
+	pci_set_drvdata(pdev, hp);
+
+	if (!qfe_slot) {
+		struct pci_dev *qpdev = qp->quattro_dev;
+
+		prom_name[0] = 0;
+		if (!strncmp(dev->name, "eth", 3)) {
+			int i = simple_strtoul(dev->name + 3, NULL, 10);
+			sprintf(prom_name, "-%d", i + 3);
+		}
+		printk(KERN_INFO "%s%s: Quattro HME (PCI/CheerIO) 10/100baseT Ethernet ", dev->name, prom_name);
+		if (qpdev->vendor == PCI_VENDOR_ID_DEC &&
+		    qpdev->device == PCI_DEVICE_ID_DEC_21153)
+			printk("DEC 21153 PCI Bridge\n");
+		else
+			printk("unknown bridge %04x.%04x\n",
+				qpdev->vendor, qpdev->device);
+	}
+
+	if (qfe_slot != -1)
+		printk(KERN_INFO "%s: Quattro HME slot %d (PCI/CheerIO) 10/100baseT Ethernet ",
+		       dev->name, qfe_slot);
+	else
+		printk(KERN_INFO "%s: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet ",
+		       dev->name);
+
+	printk("%pM\n", dev->dev_addr);
+
+	return 0;
+
+err_out_free_coherent:
+	dma_free_coherent(hp->dma_dev, PAGE_SIZE,
+			  hp->happy_block, hp->hblock_dvma);
+
+err_out_iounmap:
+	iounmap(hp->gregs);
+
+err_out_free_res:
+	pci_release_regions(pdev);
+
+err_out_clear_quattro:
+	if (qp != NULL)
+		qp->happy_meals[qfe_slot] = NULL;
+
+	free_netdev(dev);
+
+err_out:
+	return err;
+}
+
+static void happy_meal_pci_remove(struct pci_dev *pdev)
+{
+	struct happy_meal *hp = pci_get_drvdata(pdev);
+	struct net_device *net_dev = hp->dev;
+
+	unregister_netdev(net_dev);
+
+	dma_free_coherent(hp->dma_dev, PAGE_SIZE,
+			  hp->happy_block, hp->hblock_dvma);
+	iounmap(hp->gregs);
+	pci_release_regions(hp->happy_dev);
+
+	free_netdev(net_dev);
+}
+
+static const struct pci_device_id happymeal_pci_ids[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_HAPPYMEAL) },
+	{ }			/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(pci, happymeal_pci_ids);
+
+static struct pci_driver hme_pci_driver = {
+	.name		= "hme",
+	.id_table	= happymeal_pci_ids,
+	.probe		= happy_meal_pci_probe,
+	.remove		= happy_meal_pci_remove,
+};
+
+static int __init happy_meal_pci_init(void)
+{
+	return pci_register_driver(&hme_pci_driver);
+}
+
+static void happy_meal_pci_exit(void)
+{
+	pci_unregister_driver(&hme_pci_driver);
+
+	while (qfe_pci_list) {
+		struct quattro *qfe = qfe_pci_list;
+		struct quattro *next = qfe->next;
+
+		kfree(qfe);
+
+		qfe_pci_list = next;
+	}
+}
+
+#endif
+
+#ifdef CONFIG_SBUS
+static const struct of_device_id hme_sbus_match[];
+static int hme_sbus_probe(struct platform_device *op)
+{
+	const struct of_device_id *match;
+	struct device_node *dp = op->dev.of_node;
+	const char *model = of_get_property(dp, "model", NULL);
+	int is_qfe;
+
+	match = of_match_device(hme_sbus_match, &op->dev);
+	if (!match)
+		return -EINVAL;
+	is_qfe = (match->data != NULL);
+
+	if (!is_qfe && model && !strcmp(model, "SUNW,sbus-qfe"))
+		is_qfe = 1;
+
+	return happy_meal_sbus_probe_one(op, is_qfe);
+}
+
+static int hme_sbus_remove(struct platform_device *op)
+{
+	struct happy_meal *hp = platform_get_drvdata(op);
+	struct net_device *net_dev = hp->dev;
+
+	unregister_netdev(net_dev);
+
+	/* XXX qfe parent interrupt... */
+
+	of_iounmap(&op->resource[0], hp->gregs, GREG_REG_SIZE);
+	of_iounmap(&op->resource[1], hp->etxregs, ETX_REG_SIZE);
+	of_iounmap(&op->resource[2], hp->erxregs, ERX_REG_SIZE);
+	of_iounmap(&op->resource[3], hp->bigmacregs, BMAC_REG_SIZE);
+	of_iounmap(&op->resource[4], hp->tcvregs, TCVR_REG_SIZE);
+	dma_free_coherent(hp->dma_dev,
+			  PAGE_SIZE,
+			  hp->happy_block,
+			  hp->hblock_dvma);
+
+	free_netdev(net_dev);
+
+	return 0;
+}
+
+static const struct of_device_id hme_sbus_match[] = {
+	{
+		.name = "SUNW,hme",
+	},
+	{
+		.name = "SUNW,qfe",
+		.data = (void *) 1,
+	},
+	{
+		.name = "qfe",
+		.data = (void *) 1,
+	},
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, hme_sbus_match);
+
+static struct platform_driver hme_sbus_driver = {
+	.driver = {
+		.name = "hme",
+		.of_match_table = hme_sbus_match,
+	},
+	.probe		= hme_sbus_probe,
+	.remove		= hme_sbus_remove,
+};
+
+static int __init happy_meal_sbus_init(void)
+{
+	int err;
+
+	err = platform_driver_register(&hme_sbus_driver);
+	if (!err)
+		err = quattro_sbus_register_irqs();
+
+	return err;
+}
+
+static void happy_meal_sbus_exit(void)
+{
+	platform_driver_unregister(&hme_sbus_driver);
+	quattro_sbus_free_irqs();
+
+	while (qfe_sbus_list) {
+		struct quattro *qfe = qfe_sbus_list;
+		struct quattro *next = qfe->next;
+
+		kfree(qfe);
+
+		qfe_sbus_list = next;
+	}
+}
+#endif
+
+static int __init happy_meal_probe(void)
+{
+	int err = 0;
+
+#ifdef CONFIG_SBUS
+	err = happy_meal_sbus_init();
+#endif
+#ifdef CONFIG_PCI
+	if (!err) {
+		err = happy_meal_pci_init();
+#ifdef CONFIG_SBUS
+		if (err)
+			happy_meal_sbus_exit();
+#endif
+	}
+#endif
+
+	return err;
+}
+
+
+static void __exit happy_meal_exit(void)
+{
+#ifdef CONFIG_SBUS
+	happy_meal_sbus_exit();
+#endif
+#ifdef CONFIG_PCI
+	happy_meal_pci_exit();
+#endif
+}
+
+module_init(happy_meal_probe);
+module_exit(happy_meal_exit);
diff --git a/drivers/net/ethernet/sun/sunhme.h b/drivers/net/ethernet/sun/sunhme.h
new file mode 100644
index 000000000..9118c60c9
--- /dev/null
+++ b/drivers/net/ethernet/sun/sunhme.h
@@ -0,0 +1,512 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* $Id: sunhme.h,v 1.33 2001/08/03 06:23:04 davem Exp $
+ * sunhme.h: Definitions for Sparc HME/BigMac 10/100baseT ethernet driver.
+ *           Also known as the "Happy Meal".
+ *
+ * Copyright (C) 1996, 1999 David S. Miller (davem@redhat.com)
+ */
+
+#ifndef _SUNHME_H
+#define _SUNHME_H
+
+#include <linux/pci.h>
+
+/* Happy Meal global registers. */
+#define GREG_SWRESET	0x000UL	/* Software Reset  */
+#define GREG_CFG	0x004UL	/* Config Register */
+#define GREG_STAT	0x100UL	/* Status          */
+#define GREG_IMASK	0x104UL	/* Interrupt Mask  */
+#define GREG_REG_SIZE	0x108UL
+
+/* Global reset register. */
+#define GREG_RESET_ETX         0x01
+#define GREG_RESET_ERX         0x02
+#define GREG_RESET_ALL         0x03
+
+/* Global config register. */
+#define GREG_CFG_BURSTMSK      0x03
+#define GREG_CFG_BURST16       0x00
+#define GREG_CFG_BURST32       0x01
+#define GREG_CFG_BURST64       0x02
+#define GREG_CFG_64BIT         0x04
+#define GREG_CFG_PARITY        0x08
+#define GREG_CFG_RESV          0x10
+
+/* Global status register. */
+#define GREG_STAT_GOTFRAME     0x00000001 /* Received a frame                         */
+#define GREG_STAT_RCNTEXP      0x00000002 /* Receive frame counter expired            */
+#define GREG_STAT_ACNTEXP      0x00000004 /* Align-error counter expired              */
+#define GREG_STAT_CCNTEXP      0x00000008 /* CRC-error counter expired                */
+#define GREG_STAT_LCNTEXP      0x00000010 /* Length-error counter expired             */
+#define GREG_STAT_RFIFOVF      0x00000020 /* Receive FIFO overflow                    */
+#define GREG_STAT_CVCNTEXP     0x00000040 /* Code-violation counter expired           */
+#define GREG_STAT_STSTERR      0x00000080 /* Test error in XIF for SQE                */
+#define GREG_STAT_SENTFRAME    0x00000100 /* Transmitted a frame                      */
+#define GREG_STAT_TFIFO_UND    0x00000200 /* Transmit FIFO underrun                   */
+#define GREG_STAT_MAXPKTERR    0x00000400 /* Max-packet size error                    */
+#define GREG_STAT_NCNTEXP      0x00000800 /* Normal-collision counter expired         */
+#define GREG_STAT_ECNTEXP      0x00001000 /* Excess-collision counter expired         */
+#define GREG_STAT_LCCNTEXP     0x00002000 /* Late-collision counter expired           */
+#define GREG_STAT_FCNTEXP      0x00004000 /* First-collision counter expired          */
+#define GREG_STAT_DTIMEXP      0x00008000 /* Defer-timer expired                      */
+#define GREG_STAT_RXTOHOST     0x00010000 /* Moved from receive-FIFO to host memory   */
+#define GREG_STAT_NORXD        0x00020000 /* No more receive descriptors              */
+#define GREG_STAT_RXERR        0x00040000 /* Error during receive dma                 */
+#define GREG_STAT_RXLATERR     0x00080000 /* Late error during receive dma            */
+#define GREG_STAT_RXPERR       0x00100000 /* Parity error during receive dma          */
+#define GREG_STAT_RXTERR       0x00200000 /* Tag error during receive dma             */
+#define GREG_STAT_EOPERR       0x00400000 /* Transmit descriptor did not have EOP set */
+#define GREG_STAT_MIFIRQ       0x00800000 /* MIF is signaling an interrupt condition  */
+#define GREG_STAT_HOSTTOTX     0x01000000 /* Moved from host memory to transmit-FIFO  */
+#define GREG_STAT_TXALL        0x02000000 /* Transmitted all packets in the tx-fifo   */
+#define GREG_STAT_TXEACK       0x04000000 /* Error during transmit dma                */
+#define GREG_STAT_TXLERR       0x08000000 /* Late error during transmit dma           */
+#define GREG_STAT_TXPERR       0x10000000 /* Parity error during transmit dma         */
+#define GREG_STAT_TXTERR       0x20000000 /* Tag error during transmit dma            */
+#define GREG_STAT_SLVERR       0x40000000 /* PIO access got an error                  */
+#define GREG_STAT_SLVPERR      0x80000000 /* PIO access got a parity error            */
+
+/* All interesting error conditions. */
+#define GREG_STAT_ERRORS       0xfc7efefc
+
+/* Global interrupt mask register. */
+#define GREG_IMASK_GOTFRAME    0x00000001 /* Received a frame                         */
+#define GREG_IMASK_RCNTEXP     0x00000002 /* Receive frame counter expired            */
+#define GREG_IMASK_ACNTEXP     0x00000004 /* Align-error counter expired              */
+#define GREG_IMASK_CCNTEXP     0x00000008 /* CRC-error counter expired                */
+#define GREG_IMASK_LCNTEXP     0x00000010 /* Length-error counter expired             */
+#define GREG_IMASK_RFIFOVF     0x00000020 /* Receive FIFO overflow                    */
+#define GREG_IMASK_CVCNTEXP    0x00000040 /* Code-violation counter expired           */
+#define GREG_IMASK_STSTERR     0x00000080 /* Test error in XIF for SQE                */
+#define GREG_IMASK_SENTFRAME   0x00000100 /* Transmitted a frame                      */
+#define GREG_IMASK_TFIFO_UND   0x00000200 /* Transmit FIFO underrun                   */
+#define GREG_IMASK_MAXPKTERR   0x00000400 /* Max-packet size error                    */
+#define GREG_IMASK_NCNTEXP     0x00000800 /* Normal-collision counter expired         */
+#define GREG_IMASK_ECNTEXP     0x00001000 /* Excess-collision counter expired         */
+#define GREG_IMASK_LCCNTEXP    0x00002000 /* Late-collision counter expired           */
+#define GREG_IMASK_FCNTEXP     0x00004000 /* First-collision counter expired          */
+#define GREG_IMASK_DTIMEXP     0x00008000 /* Defer-timer expired                      */
+#define GREG_IMASK_RXTOHOST    0x00010000 /* Moved from receive-FIFO to host memory   */
+#define GREG_IMASK_NORXD       0x00020000 /* No more receive descriptors              */
+#define GREG_IMASK_RXERR       0x00040000 /* Error during receive dma                 */
+#define GREG_IMASK_RXLATERR    0x00080000 /* Late error during receive dma            */
+#define GREG_IMASK_RXPERR      0x00100000 /* Parity error during receive dma          */
+#define GREG_IMASK_RXTERR      0x00200000 /* Tag error during receive dma             */
+#define GREG_IMASK_EOPERR      0x00400000 /* Transmit descriptor did not have EOP set */
+#define GREG_IMASK_MIFIRQ      0x00800000 /* MIF is signaling an interrupt condition  */
+#define GREG_IMASK_HOSTTOTX    0x01000000 /* Moved from host memory to transmit-FIFO  */
+#define GREG_IMASK_TXALL       0x02000000 /* Transmitted all packets in the tx-fifo   */
+#define GREG_IMASK_TXEACK      0x04000000 /* Error during transmit dma                */
+#define GREG_IMASK_TXLERR      0x08000000 /* Late error during transmit dma           */
+#define GREG_IMASK_TXPERR      0x10000000 /* Parity error during transmit dma         */
+#define GREG_IMASK_TXTERR      0x20000000 /* Tag error during transmit dma            */
+#define GREG_IMASK_SLVERR      0x40000000 /* PIO access got an error                  */
+#define GREG_IMASK_SLVPERR     0x80000000 /* PIO access got a parity error            */
+
+/* Happy Meal external transmitter registers. */
+#define ETX_PENDING	0x00UL	/* Transmit pending/wakeup register */
+#define ETX_CFG		0x04UL	/* Transmit config register         */
+#define ETX_RING	0x08UL	/* Transmit ring pointer            */
+#define ETX_BBASE	0x0cUL	/* Transmit buffer base             */
+#define ETX_BDISP	0x10UL	/* Transmit buffer displacement     */
+#define ETX_FIFOWPTR	0x14UL	/* FIFO write ptr                   */
+#define ETX_FIFOSWPTR	0x18UL	/* FIFO write ptr (shadow register) */
+#define ETX_FIFORPTR	0x1cUL	/* FIFO read ptr                    */
+#define ETX_FIFOSRPTR	0x20UL	/* FIFO read ptr (shadow register)  */
+#define ETX_FIFOPCNT	0x24UL	/* FIFO packet counter              */
+#define ETX_SMACHINE	0x28UL	/* Transmitter state machine        */
+#define ETX_RSIZE	0x2cUL	/* Ring descriptor size             */
+#define ETX_BPTR	0x30UL	/* Transmit data buffer ptr         */
+#define ETX_REG_SIZE	0x34UL
+
+/* ETX transmit pending register. */
+#define ETX_TP_DMAWAKEUP         0x00000001 /* Restart transmit dma             */
+
+/* ETX config register. */
+#define ETX_CFG_DMAENABLE        0x00000001 /* Enable transmit dma              */
+#define ETX_CFG_FIFOTHRESH       0x000003fe /* Transmit FIFO threshold          */
+#define ETX_CFG_IRQDAFTER        0x00000400 /* Interrupt after TX-FIFO drained  */
+#define ETX_CFG_IRQDBEFORE       0x00000000 /* Interrupt before TX-FIFO drained */
+
+#define ETX_RSIZE_SHIFT          4
+
+/* Happy Meal external receiver registers. */
+#define ERX_CFG		0x00UL	/* Receiver config register         */
+#define ERX_RING	0x04UL	/* Receiver ring ptr                */
+#define ERX_BPTR	0x08UL	/* Receiver buffer ptr              */
+#define ERX_FIFOWPTR	0x0cUL	/* FIFO write ptr                   */
+#define ERX_FIFOSWPTR	0x10UL	/* FIFO write ptr (shadow register) */
+#define ERX_FIFORPTR	0x14UL	/* FIFO read ptr                    */
+#define ERX_FIFOSRPTR	0x18UL	/* FIFO read ptr (shadow register)  */
+#define ERX_SMACHINE	0x1cUL	/* Receiver state machine           */
+#define ERX_REG_SIZE	0x20UL
+
+/* ERX config register. */
+#define ERX_CFG_DMAENABLE    0x00000001 /* Enable receive DMA        */
+#define ERX_CFG_RESV1        0x00000006 /* Unused...                 */
+#define ERX_CFG_BYTEOFFSET   0x00000038 /* Receive first byte offset */
+#define ERX_CFG_RESV2        0x000001c0 /* Unused...                 */
+#define ERX_CFG_SIZE32       0x00000000 /* Receive ring size == 32   */
+#define ERX_CFG_SIZE64       0x00000200 /* Receive ring size == 64   */
+#define ERX_CFG_SIZE128      0x00000400 /* Receive ring size == 128  */
+#define ERX_CFG_SIZE256      0x00000600 /* Receive ring size == 256  */
+#define ERX_CFG_RESV3        0x0000f800 /* Unused...                 */
+#define ERX_CFG_CSUMSTART    0x007f0000 /* Offset of checksum start,
+					 * in halfwords. */
+
+/* I'd like a Big Mac, small fries, small coke, and SparcLinux please. */
+#define BMAC_XIFCFG	0x0000UL	/* XIF config register                */
+	/* 0x4-->0x204, reserved */
+#define BMAC_TXSWRESET	0x208UL	/* Transmitter software reset         */
+#define BMAC_TXCFG	0x20cUL	/* Transmitter config register        */
+#define BMAC_IGAP1	0x210UL	/* Inter-packet gap 1                 */
+#define BMAC_IGAP2	0x214UL	/* Inter-packet gap 2                 */
+#define BMAC_ALIMIT	0x218UL	/* Transmit attempt limit             */
+#define BMAC_STIME	0x21cUL	/* Transmit slot time                 */
+#define BMAC_PLEN	0x220UL	/* Size of transmit preamble          */
+#define BMAC_PPAT	0x224UL	/* Pattern for transmit preamble      */
+#define BMAC_TXSDELIM	0x228UL	/* Transmit delimiter                 */
+#define BMAC_JSIZE	0x22cUL	/* Jam size                           */
+#define BMAC_TXMAX	0x230UL	/* Transmit max pkt size              */
+#define BMAC_TXMIN	0x234UL	/* Transmit min pkt size              */
+#define BMAC_PATTEMPT	0x238UL	/* Count of transmit peak attempts    */
+#define BMAC_DTCTR	0x23cUL	/* Transmit defer timer               */
+#define BMAC_NCCTR	0x240UL	/* Transmit normal-collision counter  */
+#define BMAC_FCCTR	0x244UL	/* Transmit first-collision counter   */
+#define BMAC_EXCTR	0x248UL	/* Transmit excess-collision counter  */
+#define BMAC_LTCTR	0x24cUL	/* Transmit late-collision counter    */
+#define BMAC_RSEED	0x250UL	/* Transmit random number seed        */
+#define BMAC_TXSMACHINE	0x254UL	/* Transmit state machine             */
+	/* 0x258-->0x304, reserved */
+#define BMAC_RXSWRESET	0x308UL	/* Receiver software reset            */
+#define BMAC_RXCFG	0x30cUL	/* Receiver config register           */
+#define BMAC_RXMAX	0x310UL	/* Receive max pkt size               */
+#define BMAC_RXMIN	0x314UL	/* Receive min pkt size               */
+#define BMAC_MACADDR2	0x318UL	/* Ether address register 2           */
+#define BMAC_MACADDR1	0x31cUL	/* Ether address register 1           */
+#define BMAC_MACADDR0	0x320UL	/* Ether address register 0           */
+#define BMAC_FRCTR	0x324UL	/* Receive frame receive counter      */
+#define BMAC_GLECTR	0x328UL	/* Receive giant-length error counter */
+#define BMAC_UNALECTR	0x32cUL	/* Receive unaligned error counter    */
+#define BMAC_RCRCECTR	0x330UL	/* Receive CRC error counter          */
+#define BMAC_RXSMACHINE	0x334UL	/* Receiver state machine             */
+#define BMAC_RXCVALID	0x338UL	/* Receiver code violation            */
+	/* 0x33c, reserved */
+#define BMAC_HTABLE3	0x340UL	/* Hash table 3                       */
+#define BMAC_HTABLE2	0x344UL	/* Hash table 2                       */
+#define BMAC_HTABLE1	0x348UL	/* Hash table 1                       */
+#define BMAC_HTABLE0	0x34cUL	/* Hash table 0                       */
+#define BMAC_AFILTER2	0x350UL	/* Address filter 2                   */
+#define BMAC_AFILTER1	0x354UL	/* Address filter 1                   */
+#define BMAC_AFILTER0	0x358UL	/* Address filter 0                   */
+#define BMAC_AFMASK	0x35cUL	/* Address filter mask                */
+#define BMAC_REG_SIZE	0x360UL
+
+/* BigMac XIF config register. */
+#define BIGMAC_XCFG_ODENABLE  0x00000001 /* Output driver enable         */
+#define BIGMAC_XCFG_XLBACK    0x00000002 /* Loopback-mode XIF enable     */
+#define BIGMAC_XCFG_MLBACK    0x00000004 /* Loopback-mode MII enable     */
+#define BIGMAC_XCFG_MIIDISAB  0x00000008 /* MII receive buffer disable   */
+#define BIGMAC_XCFG_SQENABLE  0x00000010 /* SQE test enable              */
+#define BIGMAC_XCFG_SQETWIN   0x000003e0 /* SQE time window              */
+#define BIGMAC_XCFG_LANCE     0x00000010 /* Lance mode enable            */
+#define BIGMAC_XCFG_LIPG0     0x000003e0 /* Lance mode IPG0              */
+
+/* BigMac transmit config register. */
+#define BIGMAC_TXCFG_ENABLE   0x00000001 /* Enable the transmitter       */
+#define BIGMAC_TXCFG_SMODE    0x00000020 /* Enable slow transmit mode    */
+#define BIGMAC_TXCFG_CIGN     0x00000040 /* Ignore transmit collisions   */
+#define BIGMAC_TXCFG_FCSOFF   0x00000080 /* Do not emit FCS              */
+#define BIGMAC_TXCFG_DBACKOFF 0x00000100 /* Disable backoff              */
+#define BIGMAC_TXCFG_FULLDPLX 0x00000200 /* Enable full-duplex           */
+#define BIGMAC_TXCFG_DGIVEUP  0x00000400 /* Don't give up on transmits   */
+
+/* BigMac receive config register. */
+#define BIGMAC_RXCFG_ENABLE   0x00000001 /* Enable the receiver             */
+#define BIGMAC_RXCFG_PSTRIP   0x00000020 /* Pad byte strip enable           */
+#define BIGMAC_RXCFG_PMISC    0x00000040 /* Enable promiscuous mode          */
+#define BIGMAC_RXCFG_DERR     0x00000080 /* Disable error checking          */
+#define BIGMAC_RXCFG_DCRCS    0x00000100 /* Disable CRC stripping           */
+#define BIGMAC_RXCFG_REJME    0x00000200 /* Reject packets addressed to me  */
+#define BIGMAC_RXCFG_PGRP     0x00000400 /* Enable promisc group mode       */
+#define BIGMAC_RXCFG_HENABLE  0x00000800 /* Enable the hash filter          */
+#define BIGMAC_RXCFG_AENABLE  0x00001000 /* Enable the address filter       */
+
+/* These are the "Management Interface" (ie. MIF) registers of the transceiver. */
+#define TCVR_BBCLOCK	0x00UL	/* Bit bang clock register          */
+#define TCVR_BBDATA	0x04UL	/* Bit bang data register           */
+#define TCVR_BBOENAB	0x08UL	/* Bit bang output enable           */
+#define TCVR_FRAME	0x0cUL	/* Frame control/data register      */
+#define TCVR_CFG	0x10UL	/* MIF config register              */
+#define TCVR_IMASK	0x14UL	/* MIF interrupt mask               */
+#define TCVR_STATUS	0x18UL	/* MIF status                       */
+#define TCVR_SMACHINE	0x1cUL	/* MIF state machine                */
+#define TCVR_REG_SIZE	0x20UL
+
+/* Frame commands. */
+#define FRAME_WRITE           0x50020000
+#define FRAME_READ            0x60020000
+
+/* Transceiver config register */
+#define TCV_CFG_PSELECT       0x00000001 /* Select PHY                      */
+#define TCV_CFG_PENABLE       0x00000002 /* Enable MIF polling              */
+#define TCV_CFG_BENABLE       0x00000004 /* Enable the "bit banger" oh baby */
+#define TCV_CFG_PREGADDR      0x000000f8 /* Address of poll register        */
+#define TCV_CFG_MDIO0         0x00000100 /* MDIO zero, data/attached        */
+#define TCV_CFG_MDIO1         0x00000200 /* MDIO one,  data/attached        */
+#define TCV_CFG_PDADDR        0x00007c00 /* Device PHY address polling      */
+
+/* Here are some PHY addresses. */
+#define TCV_PADDR_ETX         0          /* Internal transceiver            */
+#define TCV_PADDR_ITX         1          /* External transceiver            */
+
+/* Transceiver status register */
+#define TCV_STAT_BASIC        0xffff0000 /* The "basic" part                */
+#define TCV_STAT_NORMAL       0x0000ffff /* The "non-basic" part            */
+
+/* Inside the Happy Meal transceiver is the physical layer, they use an
+ * implementations for National Semiconductor, part number DP83840VCE.
+ * You can retrieve the data sheets and programming docs for this beast
+ * from http://www.national.com/
+ *
+ * The DP83840 is capable of both 10 and 100Mbps ethernet, in both
+ * half and full duplex mode.  It also supports auto negotiation.
+ *
+ * But.... THIS THING IS A PAIN IN THE ASS TO PROGRAM!
+ * Debugging eeprom burnt code is more fun than programming this chip!
+ */
+
+/* Generic MII registers defined in linux/mii.h, these below
+ * are DP83840 specific.
+ */
+#define DP83840_CSCONFIG        0x17        /* CS configuration            */
+
+/* The Carrier Sense config register. */
+#define CSCONFIG_RESV1          0x0001  /* Unused...                   */
+#define CSCONFIG_LED4           0x0002  /* Pin for full-dplx LED4      */
+#define CSCONFIG_LED1           0x0004  /* Pin for conn-status LED1    */
+#define CSCONFIG_RESV2          0x0008  /* Unused...                   */
+#define CSCONFIG_TCVDISAB       0x0010  /* Turns off the transceiver   */
+#define CSCONFIG_DFBYPASS       0x0020  /* Bypass disconnect function  */
+#define CSCONFIG_GLFORCE        0x0040  /* Good link force for 100mbps */
+#define CSCONFIG_CLKTRISTATE    0x0080  /* Tristate 25m clock          */
+#define CSCONFIG_RESV3          0x0700  /* Unused...                   */
+#define CSCONFIG_ENCODE         0x0800  /* 1=MLT-3, 0=binary           */
+#define CSCONFIG_RENABLE        0x1000  /* Repeater mode enable        */
+#define CSCONFIG_TCDISABLE      0x2000  /* Disable timeout counter     */
+#define CSCONFIG_RESV4          0x4000  /* Unused...                   */
+#define CSCONFIG_NDISABLE       0x8000  /* Disable NRZI                */
+
+/* Happy Meal descriptor rings and such.
+ * All descriptor rings must be aligned on a 2K boundary.
+ * All receive buffers must be 64 byte aligned.
+ * Always write the address first before setting the ownership
+ * bits to avoid races with the hardware scanning the ring.
+ */
+typedef u32 __bitwise hme32;
+
+struct happy_meal_rxd {
+	hme32 rx_flags;
+	hme32 rx_addr;
+};
+
+#define RXFLAG_OWN         0x80000000 /* 1 = hardware, 0 = software */
+#define RXFLAG_OVERFLOW    0x40000000 /* 1 = buffer overflow        */
+#define RXFLAG_SIZE        0x3fff0000 /* Size of the buffer         */
+#define RXFLAG_CSUM        0x0000ffff /* HW computed checksum       */
+
+struct happy_meal_txd {
+	hme32 tx_flags;
+	hme32 tx_addr;
+};
+
+#define TXFLAG_OWN         0x80000000 /* 1 = hardware, 0 = software */
+#define TXFLAG_SOP         0x40000000 /* 1 = start of packet        */
+#define TXFLAG_EOP         0x20000000 /* 1 = end of packet          */
+#define TXFLAG_CSENABLE    0x10000000 /* 1 = enable hw-checksums    */
+#define TXFLAG_CSLOCATION  0x0ff00000 /* Where to stick the csum    */
+#define TXFLAG_CSBUFBEGIN  0x000fc000 /* Where to begin checksum    */
+#define TXFLAG_SIZE        0x00003fff /* Size of the packet         */
+
+#define TX_RING_SIZE       32         /* Must be >16 and <255, multiple of 16  */
+#define RX_RING_SIZE       32         /* see ERX_CFG_SIZE* for possible values */
+
+#if (TX_RING_SIZE < 16 || TX_RING_SIZE > 256 || (TX_RING_SIZE % 16) != 0)
+#error TX_RING_SIZE holds illegal value
+#endif
+
+#define TX_RING_MAXSIZE    256
+#define RX_RING_MAXSIZE    256
+
+/* We use a 14 byte offset for checksum computation. */
+#if (RX_RING_SIZE == 32)
+#define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE32|((14/2)<<16))
+#else
+#if (RX_RING_SIZE == 64)
+#define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE64|((14/2)<<16))
+#else
+#if (RX_RING_SIZE == 128)
+#define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE128|((14/2)<<16))
+#else
+#if (RX_RING_SIZE == 256)
+#define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE256|((14/2)<<16))
+#else
+#error RX_RING_SIZE holds illegal value
+#endif
+#endif
+#endif
+#endif
+
+#define NEXT_RX(num)       (((num) + 1) & (RX_RING_SIZE - 1))
+#define NEXT_TX(num)       (((num) + 1) & (TX_RING_SIZE - 1))
+#define PREV_RX(num)       (((num) - 1) & (RX_RING_SIZE - 1))
+#define PREV_TX(num)       (((num) - 1) & (TX_RING_SIZE - 1))
+
+#define TX_BUFFS_AVAIL(hp)                                    \
+        (((hp)->tx_old <= (hp)->tx_new) ?                     \
+	  (hp)->tx_old + (TX_RING_SIZE - 1) - (hp)->tx_new :  \
+			    (hp)->tx_old - (hp)->tx_new - 1)
+
+#define RX_OFFSET          2
+#define RX_BUF_ALLOC_SIZE  (1546 + RX_OFFSET + 64)
+
+#define RX_COPY_THRESHOLD  256
+
+struct hmeal_init_block {
+	struct happy_meal_rxd happy_meal_rxd[RX_RING_MAXSIZE];
+	struct happy_meal_txd happy_meal_txd[TX_RING_MAXSIZE];
+};
+
+#define hblock_offset(mem, elem) \
+((__u32)((unsigned long)(&(((struct hmeal_init_block *)0)->mem[elem]))))
+
+/* Now software state stuff. */
+enum happy_transceiver {
+	external = 0,
+	internal = 1,
+	none     = 2,
+};
+
+/* Timer state engine. */
+enum happy_timer_state {
+	arbwait  = 0,  /* Waiting for auto negotiation to complete.          */
+	lupwait  = 1,  /* Auto-neg complete, awaiting link-up status.        */
+	ltrywait = 2,  /* Forcing try of all modes, from fastest to slowest. */
+	asleep   = 3,  /* Time inactive.                                     */
+};
+
+struct quattro;
+
+/* Happy happy, joy joy! */
+struct happy_meal {
+	void __iomem	*gregs;			/* Happy meal global registers       */
+	struct hmeal_init_block  *happy_block;	/* RX and TX descriptors (CPU addr)  */
+
+#if defined(CONFIG_SBUS) && defined(CONFIG_PCI)
+	u32 (*read_desc32)(hme32 *);
+	void (*write_txd)(struct happy_meal_txd *, u32, u32);
+	void (*write_rxd)(struct happy_meal_rxd *, u32, u32);
+#endif
+
+	/* This is either an platform_device or a pci_dev. */
+	void			  *happy_dev;
+	struct device		  *dma_dev;
+
+	spinlock_t		  happy_lock;
+
+	struct sk_buff           *rx_skbs[RX_RING_SIZE];
+	struct sk_buff           *tx_skbs[TX_RING_SIZE];
+
+	int rx_new, tx_new, rx_old, tx_old;
+
+#if defined(CONFIG_SBUS) && defined(CONFIG_PCI)
+	u32 (*read32)(void __iomem *);
+	void (*write32)(void __iomem *, u32);
+#endif
+
+	void __iomem	*etxregs;        /* External transmitter regs        */
+	void __iomem	*erxregs;        /* External receiver regs           */
+	void __iomem	*bigmacregs;     /* BIGMAC core regs		     */
+	void __iomem	*tcvregs;        /* MIF transceiver regs             */
+
+	dma_addr_t                hblock_dvma;    /* DVMA visible address happy block  */
+	unsigned int              happy_flags;    /* Driver state flags                */
+	int                       irq;
+	enum happy_transceiver    tcvr_type;      /* Kind of transceiver in use        */
+	unsigned int              happy_bursts;   /* Get your mind out of the gutter   */
+	unsigned int              paddr;          /* PHY address for transceiver       */
+	unsigned short            hm_revision;    /* Happy meal revision               */
+	unsigned short            sw_bmcr;        /* SW copy of BMCR                   */
+	unsigned short            sw_bmsr;        /* SW copy of BMSR                   */
+	unsigned short            sw_physid1;     /* SW copy of PHYSID1                */
+	unsigned short            sw_physid2;     /* SW copy of PHYSID2                */
+	unsigned short            sw_advertise;   /* SW copy of ADVERTISE              */
+	unsigned short            sw_lpa;         /* SW copy of LPA                    */
+	unsigned short            sw_expansion;   /* SW copy of EXPANSION              */
+	unsigned short            sw_csconfig;    /* SW copy of CSCONFIG               */
+	unsigned int              auto_speed;     /* Auto-nego link speed              */
+        unsigned int              forced_speed;   /* Force mode link speed             */
+	unsigned int              poll_data;      /* MIF poll data                     */
+	unsigned int              poll_flag;      /* MIF poll flag                     */
+	unsigned int              linkcheck;      /* Have we checked the link yet?     */
+	unsigned int              lnkup;          /* Is the link up as far as we know? */
+	unsigned int              lnkdown;        /* Trying to force the link down?    */
+	unsigned int              lnkcnt;         /* Counter for link-up attempts.     */
+	struct timer_list         happy_timer;    /* To watch the link when coming up. */
+	enum happy_timer_state    timer_state;    /* State of the auto-neg timer.      */
+	unsigned int              timer_ticks;    /* Number of clicks at each state.   */
+
+	struct net_device	 *dev;		/* Backpointer                       */
+	struct quattro		 *qfe_parent;	/* For Quattro cards                 */
+	int			  qfe_ent;	/* Which instance on quattro         */
+};
+
+/* Here are the happy flags. */
+#define HFLAG_POLL                0x00000001      /* We are doing MIF polling          */
+#define HFLAG_FENABLE             0x00000002      /* The MII frame is enabled          */
+#define HFLAG_LANCE               0x00000004      /* We are using lance-mode           */
+#define HFLAG_RXENABLE            0x00000008      /* Receiver is enabled               */
+#define HFLAG_AUTO                0x00000010      /* Using auto-negotiation, 0 = force */
+#define HFLAG_FULL                0x00000020      /* Full duplex enable                */
+#define HFLAG_MACFULL             0x00000040      /* Using full duplex in the MAC      */
+#define HFLAG_POLLENABLE          0x00000080      /* Actually try MIF polling          */
+#define HFLAG_RXCV                0x00000100      /* XXX RXCV ENABLE                   */
+#define HFLAG_INIT                0x00000200      /* Init called at least once         */
+#define HFLAG_LINKUP              0x00000400      /* 1 = Link is up                    */
+#define HFLAG_PCI                 0x00000800      /* PCI based Happy Meal              */
+#define HFLAG_QUATTRO		  0x00001000      /* On QFE/Quattro card	       */
+
+#define HFLAG_20_21  (HFLAG_POLLENABLE | HFLAG_FENABLE)
+#define HFLAG_NOT_A0 (HFLAG_POLLENABLE | HFLAG_FENABLE | HFLAG_LANCE | HFLAG_RXCV)
+
+/* Support for QFE/Quattro cards. */
+struct quattro {
+	struct net_device	*happy_meals[4];
+
+	/* This is either a sbus_dev or a pci_dev. */
+	void			*quattro_dev;
+
+	struct quattro		*next;
+
+	/* PROM ranges, if any. */
+#ifdef CONFIG_SBUS
+	struct linux_prom_ranges  ranges[8];
+#endif
+	int			  nranges;
+};
+
+/* We use this to acquire receive skb's that we can DMA directly into. */
+#define ALIGNED_RX_SKB_ADDR(addr) \
+        ((((unsigned long)(addr) + (64UL - 1UL)) & ~(64UL - 1UL)) - (unsigned long)(addr))
+#define happy_meal_alloc_skb(__length, __gfp_flags) \
+({	struct sk_buff *__skb; \
+	__skb = alloc_skb((__length) + 64, (__gfp_flags)); \
+	if(__skb) { \
+		int __offset = (int) ALIGNED_RX_SKB_ADDR(__skb->data); \
+		if(__offset) \
+			skb_reserve(__skb, __offset); \
+	} \
+	__skb; \
+})
+
+#endif /* !(_SUNHME_H) */
diff --git a/drivers/net/ethernet/sun/sunqe.c b/drivers/net/ethernet/sun/sunqe.c
new file mode 100644
index 000000000..1468fa0a5
--- /dev/null
+++ b/drivers/net/ethernet/sun/sunqe.c
@@ -0,0 +1,996 @@
+// SPDX-License-Identifier: GPL-2.0
+/* sunqe.c: Sparc QuadEthernet 10baseT SBUS card driver.
+ *          Once again I am out to prove that every ethernet
+ *          controller out there can be most efficiently programmed
+ *          if you make it look like a LANCE.
+ *
+ * Copyright (C) 1996, 1999, 2003, 2006, 2008 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/crc32.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/ethtool.h>
+#include <linux/bitops.h>
+#include <linux/dma-mapping.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/byteorder.h>
+#include <asm/idprom.h>
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/auxio.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+
+#include "sunqe.h"
+
+#define DRV_NAME	"sunqe"
+#define DRV_VERSION	"4.1"
+#define DRV_RELDATE	"August 27, 2008"
+#define DRV_AUTHOR	"David S. Miller (davem@davemloft.net)"
+
+static char version[] =
+	DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "\n";
+
+MODULE_VERSION(DRV_VERSION);
+MODULE_AUTHOR(DRV_AUTHOR);
+MODULE_DESCRIPTION("Sun QuadEthernet 10baseT SBUS card driver");
+MODULE_LICENSE("GPL");
+
+static struct sunqec *root_qec_dev;
+
+static void qe_set_multicast(struct net_device *dev);
+
+#define QEC_RESET_TRIES 200
+
+static inline int qec_global_reset(void __iomem *gregs)
+{
+	int tries = QEC_RESET_TRIES;
+
+	sbus_writel(GLOB_CTRL_RESET, gregs + GLOB_CTRL);
+	while (--tries) {
+		u32 tmp = sbus_readl(gregs + GLOB_CTRL);
+		if (tmp & GLOB_CTRL_RESET) {
+			udelay(20);
+			continue;
+		}
+		break;
+	}
+	if (tries)
+		return 0;
+	printk(KERN_ERR "QuadEther: AIEEE cannot reset the QEC!\n");
+	return -1;
+}
+
+#define MACE_RESET_RETRIES 200
+#define QE_RESET_RETRIES   200
+
+static inline int qe_stop(struct sunqe *qep)
+{
+	void __iomem *cregs = qep->qcregs;
+	void __iomem *mregs = qep->mregs;
+	int tries;
+
+	/* Reset the MACE, then the QEC channel. */
+	sbus_writeb(MREGS_BCONFIG_RESET, mregs + MREGS_BCONFIG);
+	tries = MACE_RESET_RETRIES;
+	while (--tries) {
+		u8 tmp = sbus_readb(mregs + MREGS_BCONFIG);
+		if (tmp & MREGS_BCONFIG_RESET) {
+			udelay(20);
+			continue;
+		}
+		break;
+	}
+	if (!tries) {
+		printk(KERN_ERR "QuadEther: AIEEE cannot reset the MACE!\n");
+		return -1;
+	}
+
+	sbus_writel(CREG_CTRL_RESET, cregs + CREG_CTRL);
+	tries = QE_RESET_RETRIES;
+	while (--tries) {
+		u32 tmp = sbus_readl(cregs + CREG_CTRL);
+		if (tmp & CREG_CTRL_RESET) {
+			udelay(20);
+			continue;
+		}
+		break;
+	}
+	if (!tries) {
+		printk(KERN_ERR "QuadEther: Cannot reset QE channel!\n");
+		return -1;
+	}
+	return 0;
+}
+
+static void qe_init_rings(struct sunqe *qep)
+{
+	struct qe_init_block *qb = qep->qe_block;
+	struct sunqe_buffers *qbufs = qep->buffers;
+	__u32 qbufs_dvma = (__u32)qep->buffers_dvma;
+	int i;
+
+	qep->rx_new = qep->rx_old = qep->tx_new = qep->tx_old = 0;
+	memset(qb, 0, sizeof(struct qe_init_block));
+	memset(qbufs, 0, sizeof(struct sunqe_buffers));
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		qb->qe_rxd[i].rx_addr = qbufs_dvma + qebuf_offset(rx_buf, i);
+		qb->qe_rxd[i].rx_flags =
+			(RXD_OWN | ((RXD_PKT_SZ) & RXD_LENGTH));
+	}
+}
+
+static int qe_init(struct sunqe *qep, int from_irq)
+{
+	struct sunqec *qecp = qep->parent;
+	void __iomem *cregs = qep->qcregs;
+	void __iomem *mregs = qep->mregs;
+	void __iomem *gregs = qecp->gregs;
+	unsigned char *e = &qep->dev->dev_addr[0];
+	__u32 qblk_dvma = (__u32)qep->qblock_dvma;
+	u32 tmp;
+	int i;
+
+	/* Shut it up. */
+	if (qe_stop(qep))
+		return -EAGAIN;
+
+	/* Setup initial rx/tx init block pointers. */
+	sbus_writel(qblk_dvma + qib_offset(qe_rxd, 0), cregs + CREG_RXDS);
+	sbus_writel(qblk_dvma + qib_offset(qe_txd, 0), cregs + CREG_TXDS);
+
+	/* Enable/mask the various irq's. */
+	sbus_writel(0, cregs + CREG_RIMASK);
+	sbus_writel(1, cregs + CREG_TIMASK);
+
+	sbus_writel(0, cregs + CREG_QMASK);
+	sbus_writel(CREG_MMASK_RXCOLL, cregs + CREG_MMASK);
+
+	/* Setup the FIFO pointers into QEC local memory. */
+	tmp = qep->channel * sbus_readl(gregs + GLOB_MSIZE);
+	sbus_writel(tmp, cregs + CREG_RXRBUFPTR);
+	sbus_writel(tmp, cregs + CREG_RXWBUFPTR);
+
+	tmp = sbus_readl(cregs + CREG_RXRBUFPTR) +
+		sbus_readl(gregs + GLOB_RSIZE);
+	sbus_writel(tmp, cregs + CREG_TXRBUFPTR);
+	sbus_writel(tmp, cregs + CREG_TXWBUFPTR);
+
+	/* Clear the channel collision counter. */
+	sbus_writel(0, cregs + CREG_CCNT);
+
+	/* For 10baseT, inter frame space nor throttle seems to be necessary. */
+	sbus_writel(0, cregs + CREG_PIPG);
+
+	/* Now dork with the AMD MACE. */
+	sbus_writeb(MREGS_PHYCONFIG_AUTO, mregs + MREGS_PHYCONFIG);
+	sbus_writeb(MREGS_TXFCNTL_AUTOPAD, mregs + MREGS_TXFCNTL);
+	sbus_writeb(0, mregs + MREGS_RXFCNTL);
+
+	/* The QEC dma's the rx'd packets from local memory out to main memory,
+	 * and therefore it interrupts when the packet reception is "complete".
+	 * So don't listen for the MACE talking about it.
+	 */
+	sbus_writeb(MREGS_IMASK_COLL | MREGS_IMASK_RXIRQ, mregs + MREGS_IMASK);
+	sbus_writeb(MREGS_BCONFIG_BSWAP | MREGS_BCONFIG_64TS, mregs + MREGS_BCONFIG);
+	sbus_writeb((MREGS_FCONFIG_TXF16 | MREGS_FCONFIG_RXF32 |
+		     MREGS_FCONFIG_RFWU | MREGS_FCONFIG_TFWU),
+		    mregs + MREGS_FCONFIG);
+
+	/* Only usable interface on QuadEther is twisted pair. */
+	sbus_writeb(MREGS_PLSCONFIG_TP, mregs + MREGS_PLSCONFIG);
+
+	/* Tell MACE we are changing the ether address. */
+	sbus_writeb(MREGS_IACONFIG_ACHNGE | MREGS_IACONFIG_PARESET,
+		    mregs + MREGS_IACONFIG);
+	while ((sbus_readb(mregs + MREGS_IACONFIG) & MREGS_IACONFIG_ACHNGE) != 0)
+		barrier();
+	sbus_writeb(e[0], mregs + MREGS_ETHADDR);
+	sbus_writeb(e[1], mregs + MREGS_ETHADDR);
+	sbus_writeb(e[2], mregs + MREGS_ETHADDR);
+	sbus_writeb(e[3], mregs + MREGS_ETHADDR);
+	sbus_writeb(e[4], mregs + MREGS_ETHADDR);
+	sbus_writeb(e[5], mregs + MREGS_ETHADDR);
+
+	/* Clear out the address filter. */
+	sbus_writeb(MREGS_IACONFIG_ACHNGE | MREGS_IACONFIG_LARESET,
+		    mregs + MREGS_IACONFIG);
+	while ((sbus_readb(mregs + MREGS_IACONFIG) & MREGS_IACONFIG_ACHNGE) != 0)
+		barrier();
+	for (i = 0; i < 8; i++)
+		sbus_writeb(0, mregs + MREGS_FILTER);
+
+	/* Address changes are now complete. */
+	sbus_writeb(0, mregs + MREGS_IACONFIG);
+
+	qe_init_rings(qep);
+
+	/* Wait a little bit for the link to come up... */
+	mdelay(5);
+	if (!(sbus_readb(mregs + MREGS_PHYCONFIG) & MREGS_PHYCONFIG_LTESTDIS)) {
+		int tries = 50;
+
+		while (--tries) {
+			u8 tmp;
+
+			mdelay(5);
+			barrier();
+			tmp = sbus_readb(mregs + MREGS_PHYCONFIG);
+			if ((tmp & MREGS_PHYCONFIG_LSTAT) != 0)
+				break;
+		}
+		if (tries == 0)
+			printk(KERN_NOTICE "%s: Warning, link state is down.\n", qep->dev->name);
+	}
+
+	/* Missed packet counter is cleared on a read. */
+	sbus_readb(mregs + MREGS_MPCNT);
+
+	/* Reload multicast information, this will enable the receiver
+	 * and transmitter.
+	 */
+	qe_set_multicast(qep->dev);
+
+	/* QEC should now start to show interrupts. */
+	return 0;
+}
+
+/* Grrr, certain error conditions completely lock up the AMD MACE,
+ * so when we get these we _must_ reset the chip.
+ */
+static int qe_is_bolixed(struct sunqe *qep, u32 qe_status)
+{
+	struct net_device *dev = qep->dev;
+	int mace_hwbug_workaround = 0;
+
+	if (qe_status & CREG_STAT_EDEFER) {
+		printk(KERN_ERR "%s: Excessive transmit defers.\n", dev->name);
+		dev->stats.tx_errors++;
+	}
+
+	if (qe_status & CREG_STAT_CLOSS) {
+		printk(KERN_ERR "%s: Carrier lost, link down?\n", dev->name);
+		dev->stats.tx_errors++;
+		dev->stats.tx_carrier_errors++;
+	}
+
+	if (qe_status & CREG_STAT_ERETRIES) {
+		printk(KERN_ERR "%s: Excessive transmit retries (more than 16).\n", dev->name);
+		dev->stats.tx_errors++;
+		mace_hwbug_workaround = 1;
+	}
+
+	if (qe_status & CREG_STAT_LCOLL) {
+		printk(KERN_ERR "%s: Late transmit collision.\n", dev->name);
+		dev->stats.tx_errors++;
+		dev->stats.collisions++;
+		mace_hwbug_workaround = 1;
+	}
+
+	if (qe_status & CREG_STAT_FUFLOW) {
+		printk(KERN_ERR "%s: Transmit fifo underflow, driver bug.\n", dev->name);
+		dev->stats.tx_errors++;
+		mace_hwbug_workaround = 1;
+	}
+
+	if (qe_status & CREG_STAT_JERROR) {
+		printk(KERN_ERR "%s: Jabber error.\n", dev->name);
+	}
+
+	if (qe_status & CREG_STAT_BERROR) {
+		printk(KERN_ERR "%s: Babble error.\n", dev->name);
+	}
+
+	if (qe_status & CREG_STAT_CCOFLOW) {
+		dev->stats.tx_errors += 256;
+		dev->stats.collisions += 256;
+	}
+
+	if (qe_status & CREG_STAT_TXDERROR) {
+		printk(KERN_ERR "%s: Transmit descriptor is bogus, driver bug.\n", dev->name);
+		dev->stats.tx_errors++;
+		dev->stats.tx_aborted_errors++;
+		mace_hwbug_workaround = 1;
+	}
+
+	if (qe_status & CREG_STAT_TXLERR) {
+		printk(KERN_ERR "%s: Transmit late error.\n", dev->name);
+		dev->stats.tx_errors++;
+		mace_hwbug_workaround = 1;
+	}
+
+	if (qe_status & CREG_STAT_TXPERR) {
+		printk(KERN_ERR "%s: Transmit DMA parity error.\n", dev->name);
+		dev->stats.tx_errors++;
+		dev->stats.tx_aborted_errors++;
+		mace_hwbug_workaround = 1;
+	}
+
+	if (qe_status & CREG_STAT_TXSERR) {
+		printk(KERN_ERR "%s: Transmit DMA sbus error ack.\n", dev->name);
+		dev->stats.tx_errors++;
+		dev->stats.tx_aborted_errors++;
+		mace_hwbug_workaround = 1;
+	}
+
+	if (qe_status & CREG_STAT_RCCOFLOW) {
+		dev->stats.rx_errors += 256;
+		dev->stats.collisions += 256;
+	}
+
+	if (qe_status & CREG_STAT_RUOFLOW) {
+		dev->stats.rx_errors += 256;
+		dev->stats.rx_over_errors += 256;
+	}
+
+	if (qe_status & CREG_STAT_MCOFLOW) {
+		dev->stats.rx_errors += 256;
+		dev->stats.rx_missed_errors += 256;
+	}
+
+	if (qe_status & CREG_STAT_RXFOFLOW) {
+		printk(KERN_ERR "%s: Receive fifo overflow.\n", dev->name);
+		dev->stats.rx_errors++;
+		dev->stats.rx_over_errors++;
+	}
+
+	if (qe_status & CREG_STAT_RLCOLL) {
+		printk(KERN_ERR "%s: Late receive collision.\n", dev->name);
+		dev->stats.rx_errors++;
+		dev->stats.collisions++;
+	}
+
+	if (qe_status & CREG_STAT_FCOFLOW) {
+		dev->stats.rx_errors += 256;
+		dev->stats.rx_frame_errors += 256;
+	}
+
+	if (qe_status & CREG_STAT_CECOFLOW) {
+		dev->stats.rx_errors += 256;
+		dev->stats.rx_crc_errors += 256;
+	}
+
+	if (qe_status & CREG_STAT_RXDROP) {
+		printk(KERN_ERR "%s: Receive packet dropped.\n", dev->name);
+		dev->stats.rx_errors++;
+		dev->stats.rx_dropped++;
+		dev->stats.rx_missed_errors++;
+	}
+
+	if (qe_status & CREG_STAT_RXSMALL) {
+		printk(KERN_ERR "%s: Receive buffer too small, driver bug.\n", dev->name);
+		dev->stats.rx_errors++;
+		dev->stats.rx_length_errors++;
+	}
+
+	if (qe_status & CREG_STAT_RXLERR) {
+		printk(KERN_ERR "%s: Receive late error.\n", dev->name);
+		dev->stats.rx_errors++;
+		mace_hwbug_workaround = 1;
+	}
+
+	if (qe_status & CREG_STAT_RXPERR) {
+		printk(KERN_ERR "%s: Receive DMA parity error.\n", dev->name);
+		dev->stats.rx_errors++;
+		dev->stats.rx_missed_errors++;
+		mace_hwbug_workaround = 1;
+	}
+
+	if (qe_status & CREG_STAT_RXSERR) {
+		printk(KERN_ERR "%s: Receive DMA sbus error ack.\n", dev->name);
+		dev->stats.rx_errors++;
+		dev->stats.rx_missed_errors++;
+		mace_hwbug_workaround = 1;
+	}
+
+	if (mace_hwbug_workaround)
+		qe_init(qep, 1);
+	return mace_hwbug_workaround;
+}
+
+/* Per-QE receive interrupt service routine.  Just like on the happy meal
+ * we receive directly into skb's with a small packet copy water mark.
+ */
+static void qe_rx(struct sunqe *qep)
+{
+	struct qe_rxd *rxbase = &qep->qe_block->qe_rxd[0];
+	struct net_device *dev = qep->dev;
+	struct qe_rxd *this;
+	struct sunqe_buffers *qbufs = qep->buffers;
+	__u32 qbufs_dvma = (__u32)qep->buffers_dvma;
+	int elem = qep->rx_new;
+	u32 flags;
+
+	this = &rxbase[elem];
+	while (!((flags = this->rx_flags) & RXD_OWN)) {
+		struct sk_buff *skb;
+		unsigned char *this_qbuf =
+			&qbufs->rx_buf[elem & (RX_RING_SIZE - 1)][0];
+		__u32 this_qbuf_dvma = qbufs_dvma +
+			qebuf_offset(rx_buf, (elem & (RX_RING_SIZE - 1)));
+		struct qe_rxd *end_rxd =
+			&rxbase[(elem+RX_RING_SIZE)&(RX_RING_MAXSIZE-1)];
+		int len = (flags & RXD_LENGTH) - 4;  /* QE adds ether FCS size to len */
+
+		/* Check for errors. */
+		if (len < ETH_ZLEN) {
+			dev->stats.rx_errors++;
+			dev->stats.rx_length_errors++;
+			dev->stats.rx_dropped++;
+		} else {
+			skb = netdev_alloc_skb(dev, len + 2);
+			if (skb == NULL) {
+				dev->stats.rx_dropped++;
+			} else {
+				skb_reserve(skb, 2);
+				skb_put(skb, len);
+				skb_copy_to_linear_data(skb, this_qbuf,
+						 len);
+				skb->protocol = eth_type_trans(skb, qep->dev);
+				netif_rx(skb);
+				dev->stats.rx_packets++;
+				dev->stats.rx_bytes += len;
+			}
+		}
+		end_rxd->rx_addr = this_qbuf_dvma;
+		end_rxd->rx_flags = (RXD_OWN | ((RXD_PKT_SZ) & RXD_LENGTH));
+
+		elem = NEXT_RX(elem);
+		this = &rxbase[elem];
+	}
+	qep->rx_new = elem;
+}
+
+static void qe_tx_reclaim(struct sunqe *qep);
+
+/* Interrupts for all QE's get filtered out via the QEC master controller,
+ * so we just run through each qe and check to see who is signaling
+ * and thus needs to be serviced.
+ */
+static irqreturn_t qec_interrupt(int irq, void *dev_id)
+{
+	struct sunqec *qecp = dev_id;
+	u32 qec_status;
+	int channel = 0;
+
+	/* Latch the status now. */
+	qec_status = sbus_readl(qecp->gregs + GLOB_STAT);
+	while (channel < 4) {
+		if (qec_status & 0xf) {
+			struct sunqe *qep = qecp->qes[channel];
+			u32 qe_status;
+
+			qe_status = sbus_readl(qep->qcregs + CREG_STAT);
+			if (qe_status & CREG_STAT_ERRORS) {
+				if (qe_is_bolixed(qep, qe_status))
+					goto next;
+			}
+			if (qe_status & CREG_STAT_RXIRQ)
+				qe_rx(qep);
+			if (netif_queue_stopped(qep->dev) &&
+			    (qe_status & CREG_STAT_TXIRQ)) {
+				spin_lock(&qep->lock);
+				qe_tx_reclaim(qep);
+				if (TX_BUFFS_AVAIL(qep) > 0) {
+					/* Wake net queue and return to
+					 * lazy tx reclaim.
+					 */
+					netif_wake_queue(qep->dev);
+					sbus_writel(1, qep->qcregs + CREG_TIMASK);
+				}
+				spin_unlock(&qep->lock);
+			}
+	next:
+			;
+		}
+		qec_status >>= 4;
+		channel++;
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int qe_open(struct net_device *dev)
+{
+	struct sunqe *qep = netdev_priv(dev);
+
+	qep->mconfig = (MREGS_MCONFIG_TXENAB |
+			MREGS_MCONFIG_RXENAB |
+			MREGS_MCONFIG_MBAENAB);
+	return qe_init(qep, 0);
+}
+
+static int qe_close(struct net_device *dev)
+{
+	struct sunqe *qep = netdev_priv(dev);
+
+	qe_stop(qep);
+	return 0;
+}
+
+/* Reclaim TX'd frames from the ring.  This must always run under
+ * the IRQ protected qep->lock.
+ */
+static void qe_tx_reclaim(struct sunqe *qep)
+{
+	struct qe_txd *txbase = &qep->qe_block->qe_txd[0];
+	int elem = qep->tx_old;
+
+	while (elem != qep->tx_new) {
+		u32 flags = txbase[elem].tx_flags;
+
+		if (flags & TXD_OWN)
+			break;
+		elem = NEXT_TX(elem);
+	}
+	qep->tx_old = elem;
+}
+
+static void qe_tx_timeout(struct net_device *dev)
+{
+	struct sunqe *qep = netdev_priv(dev);
+	int tx_full;
+
+	spin_lock_irq(&qep->lock);
+
+	/* Try to reclaim, if that frees up some tx
+	 * entries, we're fine.
+	 */
+	qe_tx_reclaim(qep);
+	tx_full = TX_BUFFS_AVAIL(qep) <= 0;
+
+	spin_unlock_irq(&qep->lock);
+
+	if (! tx_full)
+		goto out;
+
+	printk(KERN_ERR "%s: transmit timed out, resetting\n", dev->name);
+	qe_init(qep, 1);
+
+out:
+	netif_wake_queue(dev);
+}
+
+/* Get a packet queued to go onto the wire. */
+static netdev_tx_t qe_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct sunqe *qep = netdev_priv(dev);
+	struct sunqe_buffers *qbufs = qep->buffers;
+	__u32 txbuf_dvma, qbufs_dvma = (__u32)qep->buffers_dvma;
+	unsigned char *txbuf;
+	int len, entry;
+
+	spin_lock_irq(&qep->lock);
+
+	qe_tx_reclaim(qep);
+
+	len = skb->len;
+	entry = qep->tx_new;
+
+	txbuf = &qbufs->tx_buf[entry & (TX_RING_SIZE - 1)][0];
+	txbuf_dvma = qbufs_dvma +
+		qebuf_offset(tx_buf, (entry & (TX_RING_SIZE - 1)));
+
+	/* Avoid a race... */
+	qep->qe_block->qe_txd[entry].tx_flags = TXD_UPDATE;
+
+	skb_copy_from_linear_data(skb, txbuf, len);
+
+	qep->qe_block->qe_txd[entry].tx_addr = txbuf_dvma;
+	qep->qe_block->qe_txd[entry].tx_flags =
+		(TXD_OWN | TXD_SOP | TXD_EOP | (len & TXD_LENGTH));
+	qep->tx_new = NEXT_TX(entry);
+
+	/* Get it going. */
+	sbus_writel(CREG_CTRL_TWAKEUP, qep->qcregs + CREG_CTRL);
+
+	dev->stats.tx_packets++;
+	dev->stats.tx_bytes += len;
+
+	if (TX_BUFFS_AVAIL(qep) <= 0) {
+		/* Halt the net queue and enable tx interrupts.
+		 * When the tx queue empties the tx irq handler
+		 * will wake up the queue and return us back to
+		 * the lazy tx reclaim scheme.
+		 */
+		netif_stop_queue(dev);
+		sbus_writel(0, qep->qcregs + CREG_TIMASK);
+	}
+	spin_unlock_irq(&qep->lock);
+
+	dev_kfree_skb(skb);
+
+	return NETDEV_TX_OK;
+}
+
+static void qe_set_multicast(struct net_device *dev)
+{
+	struct sunqe *qep = netdev_priv(dev);
+	struct netdev_hw_addr *ha;
+	u8 new_mconfig = qep->mconfig;
+	int i;
+	u32 crc;
+
+	/* Lock out others. */
+	netif_stop_queue(dev);
+
+	if ((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 64)) {
+		sbus_writeb(MREGS_IACONFIG_ACHNGE | MREGS_IACONFIG_LARESET,
+			    qep->mregs + MREGS_IACONFIG);
+		while ((sbus_readb(qep->mregs + MREGS_IACONFIG) & MREGS_IACONFIG_ACHNGE) != 0)
+			barrier();
+		for (i = 0; i < 8; i++)
+			sbus_writeb(0xff, qep->mregs + MREGS_FILTER);
+		sbus_writeb(0, qep->mregs + MREGS_IACONFIG);
+	} else if (dev->flags & IFF_PROMISC) {
+		new_mconfig |= MREGS_MCONFIG_PROMISC;
+	} else {
+		u16 hash_table[4];
+		u8 *hbytes = (unsigned char *) &hash_table[0];
+
+		memset(hash_table, 0, sizeof(hash_table));
+		netdev_for_each_mc_addr(ha, dev) {
+			crc = ether_crc_le(6, ha->addr);
+			crc >>= 26;
+			hash_table[crc >> 4] |= 1 << (crc & 0xf);
+		}
+		/* Program the qe with the new filter value. */
+		sbus_writeb(MREGS_IACONFIG_ACHNGE | MREGS_IACONFIG_LARESET,
+			    qep->mregs + MREGS_IACONFIG);
+		while ((sbus_readb(qep->mregs + MREGS_IACONFIG) & MREGS_IACONFIG_ACHNGE) != 0)
+			barrier();
+		for (i = 0; i < 8; i++) {
+			u8 tmp = *hbytes++;
+			sbus_writeb(tmp, qep->mregs + MREGS_FILTER);
+		}
+		sbus_writeb(0, qep->mregs + MREGS_IACONFIG);
+	}
+
+	/* Any change of the logical address filter, the physical address,
+	 * or enabling/disabling promiscuous mode causes the MACE to disable
+	 * the receiver.  So we must re-enable them here or else the MACE
+	 * refuses to listen to anything on the network.  Sheesh, took
+	 * me a day or two to find this bug.
+	 */
+	qep->mconfig = new_mconfig;
+	sbus_writeb(qep->mconfig, qep->mregs + MREGS_MCONFIG);
+
+	/* Let us get going again. */
+	netif_wake_queue(dev);
+}
+
+/* Ethtool support... */
+static void qe_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	const struct linux_prom_registers *regs;
+	struct sunqe *qep = netdev_priv(dev);
+	struct platform_device *op;
+
+	strlcpy(info->driver, "sunqe", sizeof(info->driver));
+	strlcpy(info->version, "3.0", sizeof(info->version));
+
+	op = qep->op;
+	regs = of_get_property(op->dev.of_node, "reg", NULL);
+	if (regs)
+		snprintf(info->bus_info, sizeof(info->bus_info), "SBUS:%d",
+			 regs->which_io);
+
+}
+
+static u32 qe_get_link(struct net_device *dev)
+{
+	struct sunqe *qep = netdev_priv(dev);
+	void __iomem *mregs = qep->mregs;
+	u8 phyconfig;
+
+	spin_lock_irq(&qep->lock);
+	phyconfig = sbus_readb(mregs + MREGS_PHYCONFIG);
+	spin_unlock_irq(&qep->lock);
+
+	return phyconfig & MREGS_PHYCONFIG_LSTAT;
+}
+
+static const struct ethtool_ops qe_ethtool_ops = {
+	.get_drvinfo		= qe_get_drvinfo,
+	.get_link		= qe_get_link,
+};
+
+/* This is only called once at boot time for each card probed. */
+static void qec_init_once(struct sunqec *qecp, struct platform_device *op)
+{
+	u8 bsizes = qecp->qec_bursts;
+
+	if (sbus_can_burst64() && (bsizes & DMA_BURST64)) {
+		sbus_writel(GLOB_CTRL_B64, qecp->gregs + GLOB_CTRL);
+	} else if (bsizes & DMA_BURST32) {
+		sbus_writel(GLOB_CTRL_B32, qecp->gregs + GLOB_CTRL);
+	} else {
+		sbus_writel(GLOB_CTRL_B16, qecp->gregs + GLOB_CTRL);
+	}
+
+	/* Packetsize only used in 100baseT BigMAC configurations,
+	 * set it to zero just to be on the safe side.
+	 */
+	sbus_writel(GLOB_PSIZE_2048, qecp->gregs + GLOB_PSIZE);
+
+	/* Set the local memsize register, divided up to one piece per QE channel. */
+	sbus_writel((resource_size(&op->resource[1]) >> 2),
+		    qecp->gregs + GLOB_MSIZE);
+
+	/* Divide up the local QEC memory amongst the 4 QE receiver and
+	 * transmitter FIFOs.  Basically it is (total / 2 / num_channels).
+	 */
+	sbus_writel((resource_size(&op->resource[1]) >> 2) >> 1,
+		    qecp->gregs + GLOB_TSIZE);
+	sbus_writel((resource_size(&op->resource[1]) >> 2) >> 1,
+		    qecp->gregs + GLOB_RSIZE);
+}
+
+static u8 qec_get_burst(struct device_node *dp)
+{
+	u8 bsizes, bsizes_more;
+
+	/* Find and set the burst sizes for the QEC, since it
+	 * does the actual dma for all 4 channels.
+	 */
+	bsizes = of_getintprop_default(dp, "burst-sizes", 0xff);
+	bsizes &= 0xff;
+	bsizes_more = of_getintprop_default(dp->parent, "burst-sizes", 0xff);
+
+	if (bsizes_more != 0xff)
+		bsizes &= bsizes_more;
+	if (bsizes == 0xff || (bsizes & DMA_BURST16) == 0 ||
+	    (bsizes & DMA_BURST32)==0)
+		bsizes = (DMA_BURST32 - 1);
+
+	return bsizes;
+}
+
+static struct sunqec *get_qec(struct platform_device *child)
+{
+	struct platform_device *op = to_platform_device(child->dev.parent);
+	struct sunqec *qecp;
+
+	qecp = platform_get_drvdata(op);
+	if (!qecp) {
+		qecp = kzalloc(sizeof(struct sunqec), GFP_KERNEL);
+		if (qecp) {
+			u32 ctrl;
+
+			qecp->op = op;
+			qecp->gregs = of_ioremap(&op->resource[0], 0,
+						 GLOB_REG_SIZE,
+						 "QEC Global Registers");
+			if (!qecp->gregs)
+				goto fail;
+
+			/* Make sure the QEC is in MACE mode. */
+			ctrl = sbus_readl(qecp->gregs + GLOB_CTRL);
+			ctrl &= 0xf0000000;
+			if (ctrl != GLOB_CTRL_MMODE) {
+				printk(KERN_ERR "qec: Not in MACE mode!\n");
+				goto fail;
+			}
+
+			if (qec_global_reset(qecp->gregs))
+				goto fail;
+
+			qecp->qec_bursts = qec_get_burst(op->dev.of_node);
+
+			qec_init_once(qecp, op);
+
+			if (request_irq(op->archdata.irqs[0], qec_interrupt,
+					IRQF_SHARED, "qec", (void *) qecp)) {
+				printk(KERN_ERR "qec: Can't register irq.\n");
+				goto fail;
+			}
+
+			platform_set_drvdata(op, qecp);
+
+			qecp->next_module = root_qec_dev;
+			root_qec_dev = qecp;
+		}
+	}
+
+	return qecp;
+
+fail:
+	if (qecp->gregs)
+		of_iounmap(&op->resource[0], qecp->gregs, GLOB_REG_SIZE);
+	kfree(qecp);
+	return NULL;
+}
+
+static const struct net_device_ops qec_ops = {
+	.ndo_open		= qe_open,
+	.ndo_stop		= qe_close,
+	.ndo_start_xmit		= qe_start_xmit,
+	.ndo_set_rx_mode	= qe_set_multicast,
+	.ndo_tx_timeout		= qe_tx_timeout,
+	.ndo_set_mac_address	= eth_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+};
+
+static int qec_ether_init(struct platform_device *op)
+{
+	static unsigned version_printed;
+	struct net_device *dev;
+	struct sunqec *qecp;
+	struct sunqe *qe;
+	int i, res;
+
+	if (version_printed++ == 0)
+		printk(KERN_INFO "%s", version);
+
+	dev = alloc_etherdev(sizeof(struct sunqe));
+	if (!dev)
+		return -ENOMEM;
+
+	memcpy(dev->dev_addr, idprom->id_ethaddr, ETH_ALEN);
+
+	qe = netdev_priv(dev);
+
+	res = -ENODEV;
+
+	i = of_getintprop_default(op->dev.of_node, "channel#", -1);
+	if (i == -1)
+		goto fail;
+	qe->channel = i;
+	spin_lock_init(&qe->lock);
+
+	qecp = get_qec(op);
+	if (!qecp)
+		goto fail;
+
+	qecp->qes[qe->channel] = qe;
+	qe->dev = dev;
+	qe->parent = qecp;
+	qe->op = op;
+
+	res = -ENOMEM;
+	qe->qcregs = of_ioremap(&op->resource[0], 0,
+				CREG_REG_SIZE, "QEC Channel Registers");
+	if (!qe->qcregs) {
+		printk(KERN_ERR "qe: Cannot map channel registers.\n");
+		goto fail;
+	}
+
+	qe->mregs = of_ioremap(&op->resource[1], 0,
+			       MREGS_REG_SIZE, "QE MACE Registers");
+	if (!qe->mregs) {
+		printk(KERN_ERR "qe: Cannot map MACE registers.\n");
+		goto fail;
+	}
+
+	qe->qe_block = dma_alloc_coherent(&op->dev, PAGE_SIZE,
+					  &qe->qblock_dvma, GFP_ATOMIC);
+	qe->buffers = dma_alloc_coherent(&op->dev, sizeof(struct sunqe_buffers),
+					 &qe->buffers_dvma, GFP_ATOMIC);
+	if (qe->qe_block == NULL || qe->qblock_dvma == 0 ||
+	    qe->buffers == NULL || qe->buffers_dvma == 0)
+		goto fail;
+
+	/* Stop this QE. */
+	qe_stop(qe);
+
+	SET_NETDEV_DEV(dev, &op->dev);
+
+	dev->watchdog_timeo = 5*HZ;
+	dev->irq = op->archdata.irqs[0];
+	dev->dma = 0;
+	dev->ethtool_ops = &qe_ethtool_ops;
+	dev->netdev_ops = &qec_ops;
+
+	res = register_netdev(dev);
+	if (res)
+		goto fail;
+
+	platform_set_drvdata(op, qe);
+
+	printk(KERN_INFO "%s: qe channel[%d] %pM\n", dev->name, qe->channel,
+	       dev->dev_addr);
+	return 0;
+
+fail:
+	if (qe->qcregs)
+		of_iounmap(&op->resource[0], qe->qcregs, CREG_REG_SIZE);
+	if (qe->mregs)
+		of_iounmap(&op->resource[1], qe->mregs, MREGS_REG_SIZE);
+	if (qe->qe_block)
+		dma_free_coherent(&op->dev, PAGE_SIZE,
+				  qe->qe_block, qe->qblock_dvma);
+	if (qe->buffers)
+		dma_free_coherent(&op->dev,
+				  sizeof(struct sunqe_buffers),
+				  qe->buffers,
+				  qe->buffers_dvma);
+
+	free_netdev(dev);
+
+	return res;
+}
+
+static int qec_sbus_probe(struct platform_device *op)
+{
+	return qec_ether_init(op);
+}
+
+static int qec_sbus_remove(struct platform_device *op)
+{
+	struct sunqe *qp = platform_get_drvdata(op);
+	struct net_device *net_dev = qp->dev;
+
+	unregister_netdev(net_dev);
+
+	of_iounmap(&op->resource[0], qp->qcregs, CREG_REG_SIZE);
+	of_iounmap(&op->resource[1], qp->mregs, MREGS_REG_SIZE);
+	dma_free_coherent(&op->dev, PAGE_SIZE,
+			  qp->qe_block, qp->qblock_dvma);
+	dma_free_coherent(&op->dev, sizeof(struct sunqe_buffers),
+			  qp->buffers, qp->buffers_dvma);
+
+	free_netdev(net_dev);
+
+	return 0;
+}
+
+static const struct of_device_id qec_sbus_match[] = {
+	{
+		.name = "qe",
+	},
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, qec_sbus_match);
+
+static struct platform_driver qec_sbus_driver = {
+	.driver = {
+		.name = "qec",
+		.of_match_table = qec_sbus_match,
+	},
+	.probe		= qec_sbus_probe,
+	.remove		= qec_sbus_remove,
+};
+
+static int __init qec_init(void)
+{
+	return platform_driver_register(&qec_sbus_driver);
+}
+
+static void __exit qec_exit(void)
+{
+	platform_driver_unregister(&qec_sbus_driver);
+
+	while (root_qec_dev) {
+		struct sunqec *next = root_qec_dev->next_module;
+		struct platform_device *op = root_qec_dev->op;
+
+		free_irq(op->archdata.irqs[0], (void *) root_qec_dev);
+		of_iounmap(&op->resource[0], root_qec_dev->gregs,
+			   GLOB_REG_SIZE);
+		kfree(root_qec_dev);
+
+		root_qec_dev = next;
+	}
+}
+
+module_init(qec_init);
+module_exit(qec_exit);
diff --git a/drivers/net/ethernet/sun/sunqe.h b/drivers/net/ethernet/sun/sunqe.h
new file mode 100644
index 000000000..0daed05b7
--- /dev/null
+++ b/drivers/net/ethernet/sun/sunqe.h
@@ -0,0 +1,351 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* $Id: sunqe.h,v 1.13 2000/02/09 11:15:42 davem Exp $
+ * sunqe.h: Definitions for the Sun QuadEthernet driver.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _SUNQE_H
+#define _SUNQE_H
+
+/* QEC global registers. */
+#define GLOB_CTRL	0x00UL		/* Control			*/
+#define GLOB_STAT	0x04UL		/* Status			*/
+#define GLOB_PSIZE	0x08UL		/* Packet Size			*/
+#define GLOB_MSIZE	0x0cUL		/* Local-memory Size		*/
+#define GLOB_RSIZE	0x10UL		/* Receive partition size	*/
+#define GLOB_TSIZE	0x14UL		/* Transmit partition size	*/
+#define GLOB_REG_SIZE	0x18UL
+
+#define GLOB_CTRL_MMODE       0x40000000 /* MACE qec mode            */
+#define GLOB_CTRL_BMODE       0x10000000 /* BigMAC qec mode          */
+#define GLOB_CTRL_EPAR        0x00000020 /* Enable parity            */
+#define GLOB_CTRL_ACNTRL      0x00000018 /* SBUS arbitration control */
+#define GLOB_CTRL_B64         0x00000004 /* 64 byte dvma bursts      */
+#define GLOB_CTRL_B32         0x00000002 /* 32 byte dvma bursts      */
+#define GLOB_CTRL_B16         0x00000000 /* 16 byte dvma bursts      */
+#define GLOB_CTRL_RESET       0x00000001 /* Reset the QEC            */
+
+#define GLOB_STAT_TX          0x00000008 /* BigMAC Transmit IRQ      */
+#define GLOB_STAT_RX          0x00000004 /* BigMAC Receive IRQ       */
+#define GLOB_STAT_BM          0x00000002 /* BigMAC Global IRQ        */
+#define GLOB_STAT_ER          0x00000001 /* BigMAC Error IRQ         */
+
+#define GLOB_PSIZE_2048       0x00       /* 2k packet size           */
+#define GLOB_PSIZE_4096       0x01       /* 4k packet size           */
+#define GLOB_PSIZE_6144       0x10       /* 6k packet size           */
+#define GLOB_PSIZE_8192       0x11       /* 8k packet size           */
+
+/* In MACE mode, there are four qe channels.  Each channel has it's own
+ * status bits in the QEC status register.  This macro picks out the
+ * ones you want.
+ */
+#define GLOB_STAT_PER_QE(status, channel) (((status) >> ((channel) * 4)) & 0xf)
+
+/* The following registers are for per-qe channel information/status. */
+#define CREG_CTRL	0x00UL	/* Control                   */
+#define CREG_STAT	0x04UL	/* Status                    */
+#define CREG_RXDS	0x08UL	/* RX descriptor ring ptr    */
+#define CREG_TXDS	0x0cUL	/* TX descriptor ring ptr    */
+#define CREG_RIMASK	0x10UL	/* RX Interrupt Mask         */
+#define CREG_TIMASK	0x14UL	/* TX Interrupt Mask         */
+#define CREG_QMASK	0x18UL	/* QEC Error Interrupt Mask  */
+#define CREG_MMASK	0x1cUL	/* MACE Error Interrupt Mask */
+#define CREG_RXWBUFPTR	0x20UL	/* Local memory rx write ptr */
+#define CREG_RXRBUFPTR	0x24UL	/* Local memory rx read ptr  */
+#define CREG_TXWBUFPTR	0x28UL	/* Local memory tx write ptr */
+#define CREG_TXRBUFPTR	0x2cUL	/* Local memory tx read ptr  */
+#define CREG_CCNT	0x30UL	/* Collision Counter         */
+#define CREG_PIPG	0x34UL	/* Inter-Frame Gap           */
+#define CREG_REG_SIZE	0x38UL
+
+#define CREG_CTRL_RXOFF       0x00000004  /* Disable this qe's receiver*/
+#define CREG_CTRL_RESET       0x00000002  /* Reset this qe channel     */
+#define CREG_CTRL_TWAKEUP     0x00000001  /* Transmitter Wakeup, 'go'. */
+
+#define CREG_STAT_EDEFER      0x10000000  /* Excessive Defers          */
+#define CREG_STAT_CLOSS       0x08000000  /* Carrier Loss              */
+#define CREG_STAT_ERETRIES    0x04000000  /* More than 16 retries      */
+#define CREG_STAT_LCOLL       0x02000000  /* Late TX Collision         */
+#define CREG_STAT_FUFLOW      0x01000000  /* FIFO Underflow            */
+#define CREG_STAT_JERROR      0x00800000  /* Jabber Error              */
+#define CREG_STAT_BERROR      0x00400000  /* Babble Error              */
+#define CREG_STAT_TXIRQ       0x00200000  /* Transmit Interrupt        */
+#define CREG_STAT_CCOFLOW     0x00100000  /* TX Coll-counter Overflow  */
+#define CREG_STAT_TXDERROR    0x00080000  /* TX Descriptor is bogus    */
+#define CREG_STAT_TXLERR      0x00040000  /* Late Transmit Error       */
+#define CREG_STAT_TXPERR      0x00020000  /* Transmit Parity Error     */
+#define CREG_STAT_TXSERR      0x00010000  /* Transmit SBUS error ack   */
+#define CREG_STAT_RCCOFLOW    0x00001000  /* RX Coll-counter Overflow  */
+#define CREG_STAT_RUOFLOW     0x00000800  /* Runt Counter Overflow     */
+#define CREG_STAT_MCOFLOW     0x00000400  /* Missed Counter Overflow   */
+#define CREG_STAT_RXFOFLOW    0x00000200  /* RX FIFO Overflow          */
+#define CREG_STAT_RLCOLL      0x00000100  /* RX Late Collision         */
+#define CREG_STAT_FCOFLOW     0x00000080  /* Frame Counter Overflow    */
+#define CREG_STAT_CECOFLOW    0x00000040  /* CRC Error-counter Overflow*/
+#define CREG_STAT_RXIRQ       0x00000020  /* Receive Interrupt         */
+#define CREG_STAT_RXDROP      0x00000010  /* Dropped a RX'd packet     */
+#define CREG_STAT_RXSMALL     0x00000008  /* Receive buffer too small  */
+#define CREG_STAT_RXLERR      0x00000004  /* Receive Late Error        */
+#define CREG_STAT_RXPERR      0x00000002  /* Receive Parity Error      */
+#define CREG_STAT_RXSERR      0x00000001  /* Receive SBUS Error ACK    */
+
+#define CREG_STAT_ERRORS      (CREG_STAT_EDEFER|CREG_STAT_CLOSS|CREG_STAT_ERETRIES|     \
+			       CREG_STAT_LCOLL|CREG_STAT_FUFLOW|CREG_STAT_JERROR|       \
+			       CREG_STAT_BERROR|CREG_STAT_CCOFLOW|CREG_STAT_TXDERROR|   \
+			       CREG_STAT_TXLERR|CREG_STAT_TXPERR|CREG_STAT_TXSERR|      \
+			       CREG_STAT_RCCOFLOW|CREG_STAT_RUOFLOW|CREG_STAT_MCOFLOW| \
+			       CREG_STAT_RXFOFLOW|CREG_STAT_RLCOLL|CREG_STAT_FCOFLOW|   \
+			       CREG_STAT_CECOFLOW|CREG_STAT_RXDROP|CREG_STAT_RXSMALL|   \
+			       CREG_STAT_RXLERR|CREG_STAT_RXPERR|CREG_STAT_RXSERR)
+
+#define CREG_QMASK_COFLOW     0x00100000  /* CollCntr overflow         */
+#define CREG_QMASK_TXDERROR   0x00080000  /* TXD error                 */
+#define CREG_QMASK_TXLERR     0x00040000  /* TX late error             */
+#define CREG_QMASK_TXPERR     0x00020000  /* TX parity error           */
+#define CREG_QMASK_TXSERR     0x00010000  /* TX sbus error ack         */
+#define CREG_QMASK_RXDROP     0x00000010  /* RX drop                   */
+#define CREG_QMASK_RXBERROR   0x00000008  /* RX buffer error           */
+#define CREG_QMASK_RXLEERR    0x00000004  /* RX late error             */
+#define CREG_QMASK_RXPERR     0x00000002  /* RX parity error           */
+#define CREG_QMASK_RXSERR     0x00000001  /* RX sbus error ack         */
+
+#define CREG_MMASK_EDEFER     0x10000000  /* Excess defer              */
+#define CREG_MMASK_CLOSS      0x08000000  /* Carrier loss              */
+#define CREG_MMASK_ERETRY     0x04000000  /* Excess retry              */
+#define CREG_MMASK_LCOLL      0x02000000  /* Late collision error      */
+#define CREG_MMASK_UFLOW      0x01000000  /* Underflow                 */
+#define CREG_MMASK_JABBER     0x00800000  /* Jabber error              */
+#define CREG_MMASK_BABBLE     0x00400000  /* Babble error              */
+#define CREG_MMASK_OFLOW      0x00000800  /* Overflow                  */
+#define CREG_MMASK_RXCOLL     0x00000400  /* RX Coll-Cntr overflow     */
+#define CREG_MMASK_RPKT       0x00000200  /* Runt pkt overflow         */
+#define CREG_MMASK_MPKT       0x00000100  /* Missed pkt overflow       */
+
+#define CREG_PIPG_TENAB       0x00000020  /* Enable Throttle           */
+#define CREG_PIPG_MMODE       0x00000010  /* Manual Mode               */
+#define CREG_PIPG_WMASK       0x0000000f  /* SBUS Wait Mask            */
+
+/* Per-channel AMD 79C940 MACE registers. */
+#define MREGS_RXFIFO	0x00UL	/* Receive FIFO                   */
+#define MREGS_TXFIFO	0x01UL	/* Transmit FIFO                  */
+#define MREGS_TXFCNTL	0x02UL	/* Transmit Frame Control         */
+#define MREGS_TXFSTAT	0x03UL	/* Transmit Frame Status          */
+#define MREGS_TXRCNT	0x04UL	/* Transmit Retry Count           */
+#define MREGS_RXFCNTL	0x05UL	/* Receive Frame Control          */
+#define MREGS_RXFSTAT	0x06UL	/* Receive Frame Status           */
+#define MREGS_FFCNT	0x07UL	/* FIFO Frame Count               */
+#define MREGS_IREG	0x08UL	/* Interrupt Register             */
+#define MREGS_IMASK	0x09UL	/* Interrupt Mask                 */
+#define MREGS_POLL	0x0aUL	/* POLL Register                  */
+#define MREGS_BCONFIG	0x0bUL	/* BIU Config                     */
+#define MREGS_FCONFIG	0x0cUL	/* FIFO Config                    */
+#define MREGS_MCONFIG	0x0dUL	/* MAC Config                     */
+#define MREGS_PLSCONFIG	0x0eUL	/* PLS Config                     */
+#define MREGS_PHYCONFIG	0x0fUL	/* PHY Config                     */
+#define MREGS_CHIPID1	0x10UL	/* Chip-ID, low bits              */
+#define MREGS_CHIPID2	0x11UL	/* Chip-ID, high bits             */
+#define MREGS_IACONFIG	0x12UL	/* Internal Address Config        */
+	/* 0x13UL, reserved */
+#define MREGS_FILTER	0x14UL	/* Logical Address Filter         */
+#define MREGS_ETHADDR	0x15UL	/* Our Ethernet Address           */
+	/* 0x16UL, reserved */
+	/* 0x17UL, reserved */
+#define MREGS_MPCNT	0x18UL	/* Missed Packet Count            */
+	/* 0x19UL, reserved */
+#define MREGS_RPCNT	0x1aUL	/* Runt Packet Count              */
+#define MREGS_RCCNT	0x1bUL	/* RX Collision Count             */
+	/* 0x1cUL, reserved */
+#define MREGS_UTEST	0x1dUL	/* User Test                      */
+#define MREGS_RTEST1	0x1eUL	/* Reserved Test 1                */
+#define MREGS_RTEST2	0x1fUL	/* Reserved Test 2                */
+#define MREGS_REG_SIZE	0x20UL
+
+#define MREGS_TXFCNTL_DRETRY        0x80 /* Retry disable                  */
+#define MREGS_TXFCNTL_DFCS          0x08 /* Disable TX FCS                 */
+#define MREGS_TXFCNTL_AUTOPAD       0x01 /* TX auto pad                    */
+
+#define MREGS_TXFSTAT_VALID         0x80 /* TX valid                       */
+#define MREGS_TXFSTAT_UNDERFLOW     0x40 /* TX underflow                   */
+#define MREGS_TXFSTAT_LCOLL         0x20 /* TX late collision              */
+#define MREGS_TXFSTAT_MRETRY        0x10 /* TX > 1 retries                 */
+#define MREGS_TXFSTAT_ORETRY        0x08 /* TX 1 retry                     */
+#define MREGS_TXFSTAT_PDEFER        0x04 /* TX pkt deferred                */
+#define MREGS_TXFSTAT_CLOSS         0x02 /* TX carrier lost                */
+#define MREGS_TXFSTAT_RERROR        0x01 /* TX retry error                 */
+
+#define MREGS_TXRCNT_EDEFER         0x80 /* TX Excess defers               */
+#define MREGS_TXRCNT_CMASK          0x0f /* TX retry count                 */
+
+#define MREGS_RXFCNTL_LOWLAT        0x08 /* RX low latency                 */
+#define MREGS_RXFCNTL_AREJECT       0x04 /* RX addr match rej              */
+#define MREGS_RXFCNTL_AUTOSTRIP     0x01 /* RX auto strip                  */
+
+#define MREGS_RXFSTAT_OVERFLOW      0x80 /* RX overflow                    */
+#define MREGS_RXFSTAT_LCOLL         0x40 /* RX late collision              */
+#define MREGS_RXFSTAT_FERROR        0x20 /* RX framing error               */
+#define MREGS_RXFSTAT_FCSERROR      0x10 /* RX FCS error                   */
+#define MREGS_RXFSTAT_RBCNT         0x0f /* RX msg byte count              */
+
+#define MREGS_FFCNT_RX              0xf0 /* RX FIFO frame cnt              */
+#define MREGS_FFCNT_TX              0x0f /* TX FIFO frame cnt              */
+
+#define MREGS_IREG_JABBER           0x80 /* IRQ Jabber error               */
+#define MREGS_IREG_BABBLE           0x40 /* IRQ Babble error               */
+#define MREGS_IREG_COLL             0x20 /* IRQ Collision error            */
+#define MREGS_IREG_RCCO             0x10 /* IRQ Collision cnt overflow     */
+#define MREGS_IREG_RPKTCO           0x08 /* IRQ Runt packet count overflow */
+#define MREGS_IREG_MPKTCO           0x04 /* IRQ missed packet cnt overflow */
+#define MREGS_IREG_RXIRQ            0x02 /* IRQ RX'd a packet              */
+#define MREGS_IREG_TXIRQ            0x01 /* IRQ TX'd a packet              */
+
+#define MREGS_IMASK_BABBLE          0x40 /* IMASK Babble errors            */
+#define MREGS_IMASK_COLL            0x20 /* IMASK Collision errors         */
+#define MREGS_IMASK_MPKTCO          0x04 /* IMASK Missed pkt cnt overflow  */
+#define MREGS_IMASK_RXIRQ           0x02 /* IMASK RX interrupts            */
+#define MREGS_IMASK_TXIRQ           0x01 /* IMASK TX interrupts            */
+
+#define MREGS_POLL_TXVALID          0x80 /* TX is valid                    */
+#define MREGS_POLL_TDTR             0x40 /* TX data transfer request       */
+#define MREGS_POLL_RDTR             0x20 /* RX data transfer request       */
+
+#define MREGS_BCONFIG_BSWAP         0x40 /* Byte Swap                      */
+#define MREGS_BCONFIG_4TS           0x00 /* 4byte transmit start point     */
+#define MREGS_BCONFIG_16TS          0x10 /* 16byte transmit start point    */
+#define MREGS_BCONFIG_64TS          0x20 /* 64byte transmit start point    */
+#define MREGS_BCONFIG_112TS         0x30 /* 112byte transmit start point   */
+#define MREGS_BCONFIG_RESET         0x01 /* SW-Reset the MACE              */
+
+#define MREGS_FCONFIG_TXF8          0x00 /* TX fifo 8 write cycles         */
+#define MREGS_FCONFIG_TXF32         0x80 /* TX fifo 32 write cycles        */
+#define MREGS_FCONFIG_TXF16         0x40 /* TX fifo 16 write cycles        */
+#define MREGS_FCONFIG_RXF64         0x20 /* RX fifo 64 write cycles        */
+#define MREGS_FCONFIG_RXF32         0x10 /* RX fifo 32 write cycles        */
+#define MREGS_FCONFIG_RXF16         0x00 /* RX fifo 16 write cycles        */
+#define MREGS_FCONFIG_TFWU          0x08 /* TX fifo watermark update       */
+#define MREGS_FCONFIG_RFWU          0x04 /* RX fifo watermark update       */
+#define MREGS_FCONFIG_TBENAB        0x02 /* TX burst enable                */
+#define MREGS_FCONFIG_RBENAB        0x01 /* RX burst enable                */
+
+#define MREGS_MCONFIG_PROMISC       0x80 /* Promiscuous mode enable        */
+#define MREGS_MCONFIG_TPDDISAB      0x40 /* TX 2part deferral enable       */
+#define MREGS_MCONFIG_MBAENAB       0x20 /* Modified backoff enable        */
+#define MREGS_MCONFIG_RPADISAB      0x08 /* RX physical addr disable       */
+#define MREGS_MCONFIG_RBDISAB       0x04 /* RX broadcast disable           */
+#define MREGS_MCONFIG_TXENAB        0x02 /* Enable transmitter             */
+#define MREGS_MCONFIG_RXENAB        0x01 /* Enable receiver                */
+
+#define MREGS_PLSCONFIG_TXMS        0x08 /* TX mode select                 */
+#define MREGS_PLSCONFIG_GPSI        0x06 /* Use GPSI connector             */
+#define MREGS_PLSCONFIG_DAI         0x04 /* Use DAI connector              */
+#define MREGS_PLSCONFIG_TP          0x02 /* Use TwistedPair connector      */
+#define MREGS_PLSCONFIG_AUI         0x00 /* Use AUI connector              */
+#define MREGS_PLSCONFIG_IOENAB      0x01 /* PLS I/O enable                 */
+
+#define MREGS_PHYCONFIG_LSTAT       0x80 /* Link status                    */
+#define MREGS_PHYCONFIG_LTESTDIS    0x40 /* Disable link test logic        */
+#define MREGS_PHYCONFIG_RXPOLARITY  0x20 /* RX polarity                    */
+#define MREGS_PHYCONFIG_APCDISAB    0x10 /* AutoPolarityCorrect disab      */
+#define MREGS_PHYCONFIG_LTENAB      0x08 /* Select low threshold           */
+#define MREGS_PHYCONFIG_AUTO        0x04 /* Connector port auto-sel        */
+#define MREGS_PHYCONFIG_RWU         0x02 /* Remote WakeUp                  */
+#define MREGS_PHYCONFIG_AW          0x01 /* Auto Wakeup                    */
+
+#define MREGS_IACONFIG_ACHNGE       0x80 /* Do address change              */
+#define MREGS_IACONFIG_PARESET      0x04 /* Physical address reset         */
+#define MREGS_IACONFIG_LARESET      0x02 /* Logical address reset          */
+
+#define MREGS_UTEST_RTRENAB         0x80 /* Enable resv test register      */
+#define MREGS_UTEST_RTRDISAB        0x40 /* Disab resv test register       */
+#define MREGS_UTEST_RPACCEPT        0x20 /* Accept runt packets            */
+#define MREGS_UTEST_FCOLL           0x10 /* Force collision status         */
+#define MREGS_UTEST_FCSENAB         0x08 /* Enable FCS on RX               */
+#define MREGS_UTEST_INTLOOPM        0x06 /* Intern lpback w/MENDEC         */
+#define MREGS_UTEST_INTLOOP         0x04 /* Intern lpback                  */
+#define MREGS_UTEST_EXTLOOP         0x02 /* Extern lpback                  */
+#define MREGS_UTEST_NOLOOP          0x00 /* No loopback                    */
+
+struct qe_rxd {
+	u32 rx_flags;
+	u32 rx_addr;
+};
+
+#define RXD_OWN      0x80000000 /* Ownership.      */
+#define RXD_UPDATE   0x10000000 /* Being Updated?  */
+#define RXD_LENGTH   0x000007ff /* Packet Length.  */
+
+struct qe_txd {
+	u32 tx_flags;
+	u32 tx_addr;
+};
+
+#define TXD_OWN      0x80000000 /* Ownership.      */
+#define TXD_SOP      0x40000000 /* Start Of Packet */
+#define TXD_EOP      0x20000000 /* End Of Packet   */
+#define TXD_UPDATE   0x10000000 /* Being Updated?  */
+#define TXD_LENGTH   0x000007ff /* Packet Length.  */
+
+#define TX_RING_MAXSIZE   256
+#define RX_RING_MAXSIZE   256
+
+#define TX_RING_SIZE      16
+#define RX_RING_SIZE      16
+
+#define NEXT_RX(num)       (((num) + 1) & (RX_RING_MAXSIZE - 1))
+#define NEXT_TX(num)       (((num) + 1) & (TX_RING_MAXSIZE - 1))
+#define PREV_RX(num)       (((num) - 1) & (RX_RING_MAXSIZE - 1))
+#define PREV_TX(num)       (((num) - 1) & (TX_RING_MAXSIZE - 1))
+
+#define TX_BUFFS_AVAIL(qp)                                    \
+        (((qp)->tx_old <= (qp)->tx_new) ?                     \
+	  (qp)->tx_old + (TX_RING_SIZE - 1) - (qp)->tx_new :  \
+			    (qp)->tx_old - (qp)->tx_new - 1)
+
+struct qe_init_block {
+	struct qe_rxd qe_rxd[RX_RING_MAXSIZE];
+	struct qe_txd qe_txd[TX_RING_MAXSIZE];
+};
+
+#define qib_offset(mem, elem) \
+((__u32)((unsigned long)(&(((struct qe_init_block *)0)->mem[elem]))))
+
+struct sunqe;
+
+struct sunqec {
+	void __iomem		*gregs;		/* QEC Global Registers         */
+	struct sunqe		*qes[4];	/* Each child MACE              */
+	unsigned int            qec_bursts;	/* Support burst sizes          */
+	struct platform_device	*op;		/* QEC's OF device              */
+	struct sunqec		*next_module;	/* List of all QECs in system   */
+};
+
+#define PKT_BUF_SZ	1664
+#define RXD_PKT_SZ	1664
+
+struct sunqe_buffers {
+	u8	tx_buf[TX_RING_SIZE][PKT_BUF_SZ];
+	u8	__pad[2];
+	u8	rx_buf[RX_RING_SIZE][PKT_BUF_SZ];
+};
+
+#define qebuf_offset(mem, elem) \
+((__u32)((unsigned long)(&(((struct sunqe_buffers *)0)->mem[elem][0]))))
+
+struct sunqe {
+	void __iomem			*qcregs;		/* QEC per-channel Registers   */
+	void __iomem			*mregs;		/* Per-channel MACE Registers  */
+	struct qe_init_block      	*qe_block;	/* RX and TX descriptors       */
+	dma_addr_t			qblock_dvma;	/* RX and TX descriptors       */
+	spinlock_t			lock;		/* Protects txfull state       */
+	int                        	rx_new, rx_old;	/* RX ring extents	       */
+	int			   	tx_new, tx_old;	/* TX ring extents	       */
+	struct sunqe_buffers		*buffers;	/* CPU visible address.        */
+	dma_addr_t			buffers_dvma;	/* DVMA visible address.       */
+	struct sunqec			*parent;
+	u8				mconfig;	/* Base MACE mconfig value     */
+	struct platform_device		*op;		/* QE's OF device struct       */
+	struct net_device		*dev;		/* QE's netdevice struct       */
+	int				channel;	/* Who am I?                   */
+};
+
+#endif /* !(_SUNQE_H) */
diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
new file mode 100644
index 000000000..590172818
--- /dev/null
+++ b/drivers/net/ethernet/sun/sunvnet.c
@@ -0,0 +1,568 @@
+// SPDX-License-Identifier: GPL-2.0
+/* sunvnet.c: Sun LDOM Virtual Network Driver.
+ *
+ * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
+ * Copyright (C) 2016-2017 Oracle. All rights reserved.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/etherdevice.h>
+#include <linux/mutex.h>
+#include <linux/highmem.h>
+#include <linux/if_vlan.h>
+
+#if IS_ENABLED(CONFIG_IPV6)
+#include <linux/icmpv6.h>
+#endif
+
+#include <net/ip.h>
+#include <net/icmp.h>
+#include <net/route.h>
+
+#include <asm/vio.h>
+#include <asm/ldc.h>
+
+#include "sunvnet_common.h"
+
+/* length of time before we decide the hardware is borked,
+ * and dev->tx_timeout() should be called to fix the problem
+ */
+#define VNET_TX_TIMEOUT			(5 * HZ)
+
+#define DRV_MODULE_NAME		"sunvnet"
+#define DRV_MODULE_VERSION	"2.0"
+#define DRV_MODULE_RELDATE	"February 3, 2017"
+
+static char version[] =
+	DRV_MODULE_NAME " " DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")";
+MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
+MODULE_DESCRIPTION("Sun LDOM virtual network driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+/* Ordered from largest major to lowest */
+static struct vio_version vnet_versions[] = {
+	{ .major = 1, .minor = 8 },
+	{ .major = 1, .minor = 7 },
+	{ .major = 1, .minor = 6 },
+	{ .major = 1, .minor = 0 },
+};
+
+static void vnet_get_drvinfo(struct net_device *dev,
+			     struct ethtool_drvinfo *info)
+{
+	strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
+	strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
+}
+
+static u32 vnet_get_msglevel(struct net_device *dev)
+{
+	struct vnet *vp = netdev_priv(dev);
+
+	return vp->msg_enable;
+}
+
+static void vnet_set_msglevel(struct net_device *dev, u32 value)
+{
+	struct vnet *vp = netdev_priv(dev);
+
+	vp->msg_enable = value;
+}
+
+static const struct {
+	const char string[ETH_GSTRING_LEN];
+} ethtool_stats_keys[] = {
+	{ "rx_packets" },
+	{ "tx_packets" },
+	{ "rx_bytes" },
+	{ "tx_bytes" },
+	{ "rx_errors" },
+	{ "tx_errors" },
+	{ "rx_dropped" },
+	{ "tx_dropped" },
+	{ "multicast" },
+	{ "rx_length_errors" },
+	{ "rx_frame_errors" },
+	{ "rx_missed_errors" },
+	{ "tx_carrier_errors" },
+	{ "nports" },
+};
+
+static int vnet_get_sset_count(struct net_device *dev, int sset)
+{
+	struct vnet *vp = (struct vnet *)netdev_priv(dev);
+
+	switch (sset) {
+	case ETH_SS_STATS:
+		return ARRAY_SIZE(ethtool_stats_keys)
+			+ (NUM_VNET_PORT_STATS * vp->nports);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void vnet_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
+{
+	struct vnet *vp = (struct vnet *)netdev_priv(dev);
+	struct vnet_port *port;
+	char *p = (char *)buf;
+
+	switch (stringset) {
+	case ETH_SS_STATS:
+		memcpy(buf, &ethtool_stats_keys, sizeof(ethtool_stats_keys));
+		p += sizeof(ethtool_stats_keys);
+
+		rcu_read_lock();
+		list_for_each_entry_rcu(port, &vp->port_list, list) {
+			snprintf(p, ETH_GSTRING_LEN, "p%u.%s-%pM",
+				 port->q_index, port->switch_port ? "s" : "q",
+				 port->raddr);
+			p += ETH_GSTRING_LEN;
+			snprintf(p, ETH_GSTRING_LEN, "p%u.rx_packets",
+				 port->q_index);
+			p += ETH_GSTRING_LEN;
+			snprintf(p, ETH_GSTRING_LEN, "p%u.tx_packets",
+				 port->q_index);
+			p += ETH_GSTRING_LEN;
+			snprintf(p, ETH_GSTRING_LEN, "p%u.rx_bytes",
+				 port->q_index);
+			p += ETH_GSTRING_LEN;
+			snprintf(p, ETH_GSTRING_LEN, "p%u.tx_bytes",
+				 port->q_index);
+			p += ETH_GSTRING_LEN;
+			snprintf(p, ETH_GSTRING_LEN, "p%u.event_up",
+				 port->q_index);
+			p += ETH_GSTRING_LEN;
+			snprintf(p, ETH_GSTRING_LEN, "p%u.event_reset",
+				 port->q_index);
+			p += ETH_GSTRING_LEN;
+		}
+		rcu_read_unlock();
+		break;
+	default:
+		WARN_ON(1);
+		break;
+	}
+}
+
+static void vnet_get_ethtool_stats(struct net_device *dev,
+				   struct ethtool_stats *estats, u64 *data)
+{
+	struct vnet *vp = (struct vnet *)netdev_priv(dev);
+	struct vnet_port *port;
+	int i = 0;
+
+	data[i++] = dev->stats.rx_packets;
+	data[i++] = dev->stats.tx_packets;
+	data[i++] = dev->stats.rx_bytes;
+	data[i++] = dev->stats.tx_bytes;
+	data[i++] = dev->stats.rx_errors;
+	data[i++] = dev->stats.tx_errors;
+	data[i++] = dev->stats.rx_dropped;
+	data[i++] = dev->stats.tx_dropped;
+	data[i++] = dev->stats.multicast;
+	data[i++] = dev->stats.rx_length_errors;
+	data[i++] = dev->stats.rx_frame_errors;
+	data[i++] = dev->stats.rx_missed_errors;
+	data[i++] = dev->stats.tx_carrier_errors;
+	data[i++] = vp->nports;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(port, &vp->port_list, list) {
+		data[i++] = port->q_index;
+		data[i++] = port->stats.rx_packets;
+		data[i++] = port->stats.tx_packets;
+		data[i++] = port->stats.rx_bytes;
+		data[i++] = port->stats.tx_bytes;
+		data[i++] = port->stats.event_up;
+		data[i++] = port->stats.event_reset;
+	}
+	rcu_read_unlock();
+}
+
+static const struct ethtool_ops vnet_ethtool_ops = {
+	.get_drvinfo		= vnet_get_drvinfo,
+	.get_msglevel		= vnet_get_msglevel,
+	.set_msglevel		= vnet_set_msglevel,
+	.get_link		= ethtool_op_get_link,
+	.get_sset_count		= vnet_get_sset_count,
+	.get_strings		= vnet_get_strings,
+	.get_ethtool_stats	= vnet_get_ethtool_stats,
+};
+
+static LIST_HEAD(vnet_list);
+static DEFINE_MUTEX(vnet_list_mutex);
+
+static struct vnet_port *__tx_port_find(struct vnet *vp, struct sk_buff *skb)
+{
+	unsigned int hash = vnet_hashfn(skb->data);
+	struct hlist_head *hp = &vp->port_hash[hash];
+	struct vnet_port *port;
+
+	hlist_for_each_entry_rcu(port, hp, hash) {
+		if (!sunvnet_port_is_up_common(port))
+			continue;
+		if (ether_addr_equal(port->raddr, skb->data))
+			return port;
+	}
+	list_for_each_entry_rcu(port, &vp->port_list, list) {
+		if (!port->switch_port)
+			continue;
+		if (!sunvnet_port_is_up_common(port))
+			continue;
+		return port;
+	}
+	return NULL;
+}
+
+/* func arg to vnet_start_xmit_common() to get the proper tx port */
+static struct vnet_port *vnet_tx_port_find(struct sk_buff *skb,
+					   struct net_device *dev)
+{
+	struct vnet *vp = netdev_priv(dev);
+
+	return __tx_port_find(vp, skb);
+}
+
+static u16 vnet_select_queue(struct net_device *dev, struct sk_buff *skb,
+			     struct net_device *sb_dev,
+			     select_queue_fallback_t fallback)
+{
+	struct vnet *vp = netdev_priv(dev);
+	struct vnet_port *port = __tx_port_find(vp, skb);
+
+	if (!port)
+		return 0;
+
+	return port->q_index;
+}
+
+/* Wrappers to common functions */
+static netdev_tx_t vnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	return sunvnet_start_xmit_common(skb, dev, vnet_tx_port_find);
+}
+
+static void vnet_set_rx_mode(struct net_device *dev)
+{
+	struct vnet *vp = netdev_priv(dev);
+
+	return sunvnet_set_rx_mode_common(dev, vp);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void vnet_poll_controller(struct net_device *dev)
+{
+	struct vnet *vp = netdev_priv(dev);
+
+	return sunvnet_poll_controller_common(dev, vp);
+}
+#endif
+
+static const struct net_device_ops vnet_ops = {
+	.ndo_open		= sunvnet_open_common,
+	.ndo_stop		= sunvnet_close_common,
+	.ndo_set_rx_mode	= vnet_set_rx_mode,
+	.ndo_set_mac_address	= sunvnet_set_mac_addr_common,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_tx_timeout		= sunvnet_tx_timeout_common,
+	.ndo_start_xmit		= vnet_start_xmit,
+	.ndo_select_queue	= vnet_select_queue,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= vnet_poll_controller,
+#endif
+};
+
+static struct vnet *vnet_new(const u64 *local_mac,
+			     struct vio_dev *vdev)
+{
+	struct net_device *dev;
+	struct vnet *vp;
+	int err, i;
+
+	dev = alloc_etherdev_mqs(sizeof(*vp), VNET_MAX_TXQS, 1);
+	if (!dev)
+		return ERR_PTR(-ENOMEM);
+	dev->needed_headroom = VNET_PACKET_SKIP + 8;
+	dev->needed_tailroom = 8;
+
+	for (i = 0; i < ETH_ALEN; i++)
+		dev->dev_addr[i] = (*local_mac >> (5 - i) * 8) & 0xff;
+
+	vp = netdev_priv(dev);
+
+	spin_lock_init(&vp->lock);
+	vp->dev = dev;
+
+	INIT_LIST_HEAD(&vp->port_list);
+	for (i = 0; i < VNET_PORT_HASH_SIZE; i++)
+		INIT_HLIST_HEAD(&vp->port_hash[i]);
+	INIT_LIST_HEAD(&vp->list);
+	vp->local_mac = *local_mac;
+
+	dev->netdev_ops = &vnet_ops;
+	dev->ethtool_ops = &vnet_ethtool_ops;
+	dev->watchdog_timeo = VNET_TX_TIMEOUT;
+
+	dev->hw_features = NETIF_F_TSO | NETIF_F_GSO | NETIF_F_ALL_TSO |
+			   NETIF_F_HW_CSUM | NETIF_F_SG;
+	dev->features = dev->hw_features;
+
+	/* MTU range: 68 - 65535 */
+	dev->min_mtu = ETH_MIN_MTU;
+	dev->max_mtu = VNET_MAX_MTU;
+
+	SET_NETDEV_DEV(dev, &vdev->dev);
+
+	err = register_netdev(dev);
+	if (err) {
+		pr_err("Cannot register net device, aborting\n");
+		goto err_out_free_dev;
+	}
+
+	netdev_info(dev, "Sun LDOM vnet %pM\n", dev->dev_addr);
+
+	list_add(&vp->list, &vnet_list);
+
+	return vp;
+
+err_out_free_dev:
+	free_netdev(dev);
+
+	return ERR_PTR(err);
+}
+
+static struct vnet *vnet_find_or_create(const u64 *local_mac,
+					struct vio_dev *vdev)
+{
+	struct vnet *iter, *vp;
+
+	mutex_lock(&vnet_list_mutex);
+	vp = NULL;
+	list_for_each_entry(iter, &vnet_list, list) {
+		if (iter->local_mac == *local_mac) {
+			vp = iter;
+			break;
+		}
+	}
+	if (!vp)
+		vp = vnet_new(local_mac, vdev);
+	mutex_unlock(&vnet_list_mutex);
+
+	return vp;
+}
+
+static void vnet_cleanup(void)
+{
+	struct vnet *vp;
+	struct net_device *dev;
+
+	mutex_lock(&vnet_list_mutex);
+	while (!list_empty(&vnet_list)) {
+		vp = list_first_entry(&vnet_list, struct vnet, list);
+		list_del(&vp->list);
+		dev = vp->dev;
+		/* vio_unregister_driver() should have cleaned up port_list */
+		BUG_ON(!list_empty(&vp->port_list));
+		unregister_netdev(dev);
+		free_netdev(dev);
+	}
+	mutex_unlock(&vnet_list_mutex);
+}
+
+static const char *local_mac_prop = "local-mac-address";
+
+static struct vnet *vnet_find_parent(struct mdesc_handle *hp,
+				     u64 port_node,
+				     struct vio_dev *vdev)
+{
+	const u64 *local_mac = NULL;
+	u64 a;
+
+	mdesc_for_each_arc(a, hp, port_node, MDESC_ARC_TYPE_BACK) {
+		u64 target = mdesc_arc_target(hp, a);
+		const char *name;
+
+		name = mdesc_get_property(hp, target, "name", NULL);
+		if (!name || strcmp(name, "network"))
+			continue;
+
+		local_mac = mdesc_get_property(hp, target,
+					       local_mac_prop, NULL);
+		if (local_mac)
+			break;
+	}
+	if (!local_mac)
+		return ERR_PTR(-ENODEV);
+
+	return vnet_find_or_create(local_mac, vdev);
+}
+
+static struct ldc_channel_config vnet_ldc_cfg = {
+	.event		= sunvnet_event_common,
+	.mtu		= 64,
+	.mode		= LDC_MODE_UNRELIABLE,
+};
+
+static struct vio_driver_ops vnet_vio_ops = {
+	.send_attr		= sunvnet_send_attr_common,
+	.handle_attr		= sunvnet_handle_attr_common,
+	.handshake_complete	= sunvnet_handshake_complete_common,
+};
+
+const char *remote_macaddr_prop = "remote-mac-address";
+
+static int vnet_port_probe(struct vio_dev *vdev, const struct vio_device_id *id)
+{
+	struct mdesc_handle *hp;
+	struct vnet_port *port;
+	unsigned long flags;
+	struct vnet *vp;
+	const u64 *rmac;
+	int len, i, err, switch_port;
+
+	hp = mdesc_grab();
+
+	vp = vnet_find_parent(hp, vdev->mp, vdev);
+	if (IS_ERR(vp)) {
+		pr_err("Cannot find port parent vnet\n");
+		err = PTR_ERR(vp);
+		goto err_out_put_mdesc;
+	}
+
+	rmac = mdesc_get_property(hp, vdev->mp, remote_macaddr_prop, &len);
+	err = -ENODEV;
+	if (!rmac) {
+		pr_err("Port lacks %s property\n", remote_macaddr_prop);
+		goto err_out_put_mdesc;
+	}
+
+	port = kzalloc(sizeof(*port), GFP_KERNEL);
+	err = -ENOMEM;
+	if (!port)
+		goto err_out_put_mdesc;
+
+	for (i = 0; i < ETH_ALEN; i++)
+		port->raddr[i] = (*rmac >> (5 - i) * 8) & 0xff;
+
+	port->vp = vp;
+
+	err = vio_driver_init(&port->vio, vdev, VDEV_NETWORK,
+			      vnet_versions, ARRAY_SIZE(vnet_versions),
+			      &vnet_vio_ops, vp->dev->name);
+	if (err)
+		goto err_out_free_port;
+
+	err = vio_ldc_alloc(&port->vio, &vnet_ldc_cfg, port);
+	if (err)
+		goto err_out_free_port;
+
+	netif_napi_add(port->vp->dev, &port->napi, sunvnet_poll_common,
+		       NAPI_POLL_WEIGHT);
+
+	INIT_HLIST_NODE(&port->hash);
+	INIT_LIST_HEAD(&port->list);
+
+	switch_port = 0;
+	if (mdesc_get_property(hp, vdev->mp, "switch-port", NULL))
+		switch_port = 1;
+	port->switch_port = switch_port;
+	port->tso = true;
+	port->tsolen = 0;
+
+	spin_lock_irqsave(&vp->lock, flags);
+	if (switch_port)
+		list_add_rcu(&port->list, &vp->port_list);
+	else
+		list_add_tail_rcu(&port->list, &vp->port_list);
+	hlist_add_head_rcu(&port->hash,
+			   &vp->port_hash[vnet_hashfn(port->raddr)]);
+	sunvnet_port_add_txq_common(port);
+	spin_unlock_irqrestore(&vp->lock, flags);
+
+	dev_set_drvdata(&vdev->dev, port);
+
+	pr_info("%s: PORT ( remote-mac %pM%s )\n",
+		vp->dev->name, port->raddr, switch_port ? " switch-port" : "");
+
+	timer_setup(&port->clean_timer, sunvnet_clean_timer_expire_common, 0);
+
+	napi_enable(&port->napi);
+	vio_port_up(&port->vio);
+
+	mdesc_release(hp);
+
+	return 0;
+
+err_out_free_port:
+	kfree(port);
+
+err_out_put_mdesc:
+	mdesc_release(hp);
+	return err;
+}
+
+static int vnet_port_remove(struct vio_dev *vdev)
+{
+	struct vnet_port *port = dev_get_drvdata(&vdev->dev);
+
+	if (port) {
+		del_timer_sync(&port->vio.timer);
+
+		napi_disable(&port->napi);
+
+		list_del_rcu(&port->list);
+		hlist_del_rcu(&port->hash);
+
+		synchronize_rcu();
+		del_timer_sync(&port->clean_timer);
+		sunvnet_port_rm_txq_common(port);
+		netif_napi_del(&port->napi);
+		sunvnet_port_free_tx_bufs_common(port);
+		vio_ldc_free(&port->vio);
+
+		dev_set_drvdata(&vdev->dev, NULL);
+
+		kfree(port);
+	}
+	return 0;
+}
+
+static const struct vio_device_id vnet_port_match[] = {
+	{
+		.type = "vnet-port",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(vio, vnet_port_match);
+
+static struct vio_driver vnet_port_driver = {
+	.id_table	= vnet_port_match,
+	.probe		= vnet_port_probe,
+	.remove		= vnet_port_remove,
+	.name		= "vnet_port",
+};
+
+static int __init vnet_init(void)
+{
+	pr_info("%s\n", version);
+	return vio_register_driver(&vnet_port_driver);
+}
+
+static void __exit vnet_exit(void)
+{
+	vio_unregister_driver(&vnet_port_driver);
+	vnet_cleanup();
+}
+
+module_init(vnet_init);
+module_exit(vnet_exit);
diff --git a/drivers/net/ethernet/sun/sunvnet_common.c b/drivers/net/ethernet/sun/sunvnet_common.c
new file mode 100644
index 000000000..59fc14b58
--- /dev/null
+++ b/drivers/net/ethernet/sun/sunvnet_common.c
@@ -0,0 +1,1817 @@
+// SPDX-License-Identifier: GPL-2.0
+/* sunvnet.c: Sun LDOM Virtual Network Driver.
+ *
+ * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
+ * Copyright (C) 2016-2017 Oracle. All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/etherdevice.h>
+#include <linux/mutex.h>
+#include <linux/highmem.h>
+#include <linux/if_vlan.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/sunvnet.h>
+
+#if IS_ENABLED(CONFIG_IPV6)
+#include <linux/icmpv6.h>
+#endif
+
+#include <net/ip.h>
+#include <net/icmp.h>
+#include <net/route.h>
+
+#include <asm/vio.h>
+#include <asm/ldc.h>
+
+#include "sunvnet_common.h"
+
+/* Heuristic for the number of times to exponentially backoff and
+ * retry sending an LDC trigger when EAGAIN is encountered
+ */
+#define	VNET_MAX_RETRIES	10
+
+MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
+MODULE_DESCRIPTION("Sun LDOM virtual network support library");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.1");
+
+static int __vnet_tx_trigger(struct vnet_port *port, u32 start);
+
+static inline u32 vnet_tx_dring_avail(struct vio_dring_state *dr)
+{
+	return vio_dring_avail(dr, VNET_TX_RING_SIZE);
+}
+
+static int vnet_handle_unknown(struct vnet_port *port, void *arg)
+{
+	struct vio_msg_tag *pkt = arg;
+
+	pr_err("Received unknown msg [%02x:%02x:%04x:%08x]\n",
+	       pkt->type, pkt->stype, pkt->stype_env, pkt->sid);
+	pr_err("Resetting connection\n");
+
+	ldc_disconnect(port->vio.lp);
+
+	return -ECONNRESET;
+}
+
+static int vnet_port_alloc_tx_ring(struct vnet_port *port);
+
+int sunvnet_send_attr_common(struct vio_driver_state *vio)
+{
+	struct vnet_port *port = to_vnet_port(vio);
+	struct net_device *dev = VNET_PORT_TO_NET_DEVICE(port);
+	struct vio_net_attr_info pkt;
+	int framelen = ETH_FRAME_LEN;
+	int i, err;
+
+	err = vnet_port_alloc_tx_ring(to_vnet_port(vio));
+	if (err)
+		return err;
+
+	memset(&pkt, 0, sizeof(pkt));
+	pkt.tag.type = VIO_TYPE_CTRL;
+	pkt.tag.stype = VIO_SUBTYPE_INFO;
+	pkt.tag.stype_env = VIO_ATTR_INFO;
+	pkt.tag.sid = vio_send_sid(vio);
+	if (vio_version_before(vio, 1, 2))
+		pkt.xfer_mode = VIO_DRING_MODE;
+	else
+		pkt.xfer_mode = VIO_NEW_DRING_MODE;
+	pkt.addr_type = VNET_ADDR_ETHERMAC;
+	pkt.ack_freq = 0;
+	for (i = 0; i < 6; i++)
+		pkt.addr |= (u64)dev->dev_addr[i] << ((5 - i) * 8);
+	if (vio_version_after(vio, 1, 3)) {
+		if (port->rmtu) {
+			port->rmtu = min(VNET_MAXPACKET, port->rmtu);
+			pkt.mtu = port->rmtu;
+		} else {
+			port->rmtu = VNET_MAXPACKET;
+			pkt.mtu = port->rmtu;
+		}
+		if (vio_version_after_eq(vio, 1, 6))
+			pkt.options = VIO_TX_DRING;
+	} else if (vio_version_before(vio, 1, 3)) {
+		pkt.mtu = framelen;
+	} else { /* v1.3 */
+		pkt.mtu = framelen + VLAN_HLEN;
+	}
+
+	pkt.cflags = 0;
+	if (vio_version_after_eq(vio, 1, 7) && port->tso) {
+		pkt.cflags |= VNET_LSO_IPV4_CAPAB;
+		if (!port->tsolen)
+			port->tsolen = VNET_MAXTSO;
+		pkt.ipv4_lso_maxlen = port->tsolen;
+	}
+
+	pkt.plnk_updt = PHYSLINK_UPDATE_NONE;
+
+	viodbg(HS, "SEND NET ATTR xmode[0x%x] atype[0x%x] addr[%llx] "
+	       "ackfreq[%u] plnk_updt[0x%02x] opts[0x%02x] mtu[%llu] "
+	       "cflags[0x%04x] lso_max[%u]\n",
+	       pkt.xfer_mode, pkt.addr_type,
+	       (unsigned long long)pkt.addr,
+	       pkt.ack_freq, pkt.plnk_updt, pkt.options,
+	       (unsigned long long)pkt.mtu, pkt.cflags, pkt.ipv4_lso_maxlen);
+
+	return vio_ldc_send(vio, &pkt, sizeof(pkt));
+}
+EXPORT_SYMBOL_GPL(sunvnet_send_attr_common);
+
+static int handle_attr_info(struct vio_driver_state *vio,
+			    struct vio_net_attr_info *pkt)
+{
+	struct vnet_port *port = to_vnet_port(vio);
+	u64	localmtu;
+	u8	xfer_mode;
+
+	viodbg(HS, "GOT NET ATTR xmode[0x%x] atype[0x%x] addr[%llx] "
+	       "ackfreq[%u] plnk_updt[0x%02x] opts[0x%02x] mtu[%llu] "
+	       " (rmtu[%llu]) cflags[0x%04x] lso_max[%u]\n",
+	       pkt->xfer_mode, pkt->addr_type,
+	       (unsigned long long)pkt->addr,
+	       pkt->ack_freq, pkt->plnk_updt, pkt->options,
+	       (unsigned long long)pkt->mtu, port->rmtu, pkt->cflags,
+	       pkt->ipv4_lso_maxlen);
+
+	pkt->tag.sid = vio_send_sid(vio);
+
+	xfer_mode = pkt->xfer_mode;
+	/* for version < 1.2, VIO_DRING_MODE = 0x3 and no bitmask */
+	if (vio_version_before(vio, 1, 2) && xfer_mode == VIO_DRING_MODE)
+		xfer_mode = VIO_NEW_DRING_MODE;
+
+	/* MTU negotiation:
+	 *	< v1.3 - ETH_FRAME_LEN exactly
+	 *	> v1.3 - MIN(pkt.mtu, VNET_MAXPACKET, port->rmtu) and change
+	 *			pkt->mtu for ACK
+	 *	= v1.3 - ETH_FRAME_LEN + VLAN_HLEN exactly
+	 */
+	if (vio_version_before(vio, 1, 3)) {
+		localmtu = ETH_FRAME_LEN;
+	} else if (vio_version_after(vio, 1, 3)) {
+		localmtu = port->rmtu ? port->rmtu : VNET_MAXPACKET;
+		localmtu = min(pkt->mtu, localmtu);
+		pkt->mtu = localmtu;
+	} else { /* v1.3 */
+		localmtu = ETH_FRAME_LEN + VLAN_HLEN;
+	}
+	port->rmtu = localmtu;
+
+	/* LSO negotiation */
+	if (vio_version_after_eq(vio, 1, 7))
+		port->tso &= !!(pkt->cflags & VNET_LSO_IPV4_CAPAB);
+	else
+		port->tso = false;
+	if (port->tso) {
+		if (!port->tsolen)
+			port->tsolen = VNET_MAXTSO;
+		port->tsolen = min(port->tsolen, pkt->ipv4_lso_maxlen);
+		if (port->tsolen < VNET_MINTSO) {
+			port->tso = false;
+			port->tsolen = 0;
+			pkt->cflags &= ~VNET_LSO_IPV4_CAPAB;
+		}
+		pkt->ipv4_lso_maxlen = port->tsolen;
+	} else {
+		pkt->cflags &= ~VNET_LSO_IPV4_CAPAB;
+		pkt->ipv4_lso_maxlen = 0;
+		port->tsolen = 0;
+	}
+
+	/* for version >= 1.6, ACK packet mode we support */
+	if (vio_version_after_eq(vio, 1, 6)) {
+		pkt->xfer_mode = VIO_NEW_DRING_MODE;
+		pkt->options = VIO_TX_DRING;
+	}
+
+	if (!(xfer_mode | VIO_NEW_DRING_MODE) ||
+	    pkt->addr_type != VNET_ADDR_ETHERMAC ||
+	    pkt->mtu != localmtu) {
+		viodbg(HS, "SEND NET ATTR NACK\n");
+
+		pkt->tag.stype = VIO_SUBTYPE_NACK;
+
+		(void)vio_ldc_send(vio, pkt, sizeof(*pkt));
+
+		return -ECONNRESET;
+	}
+
+	viodbg(HS, "SEND NET ATTR ACK xmode[0x%x] atype[0x%x] "
+	       "addr[%llx] ackfreq[%u] plnk_updt[0x%02x] opts[0x%02x] "
+	       "mtu[%llu] (rmtu[%llu]) cflags[0x%04x] lso_max[%u]\n",
+	       pkt->xfer_mode, pkt->addr_type,
+	       (unsigned long long)pkt->addr,
+	       pkt->ack_freq, pkt->plnk_updt, pkt->options,
+	       (unsigned long long)pkt->mtu, port->rmtu, pkt->cflags,
+	       pkt->ipv4_lso_maxlen);
+
+	pkt->tag.stype = VIO_SUBTYPE_ACK;
+
+	return vio_ldc_send(vio, pkt, sizeof(*pkt));
+}
+
+static int handle_attr_ack(struct vio_driver_state *vio,
+			   struct vio_net_attr_info *pkt)
+{
+	viodbg(HS, "GOT NET ATTR ACK\n");
+
+	return 0;
+}
+
+static int handle_attr_nack(struct vio_driver_state *vio,
+			    struct vio_net_attr_info *pkt)
+{
+	viodbg(HS, "GOT NET ATTR NACK\n");
+
+	return -ECONNRESET;
+}
+
+int sunvnet_handle_attr_common(struct vio_driver_state *vio, void *arg)
+{
+	struct vio_net_attr_info *pkt = arg;
+
+	switch (pkt->tag.stype) {
+	case VIO_SUBTYPE_INFO:
+		return handle_attr_info(vio, pkt);
+
+	case VIO_SUBTYPE_ACK:
+		return handle_attr_ack(vio, pkt);
+
+	case VIO_SUBTYPE_NACK:
+		return handle_attr_nack(vio, pkt);
+
+	default:
+		return -ECONNRESET;
+	}
+}
+EXPORT_SYMBOL_GPL(sunvnet_handle_attr_common);
+
+void sunvnet_handshake_complete_common(struct vio_driver_state *vio)
+{
+	struct vio_dring_state *dr;
+
+	dr = &vio->drings[VIO_DRIVER_RX_RING];
+	dr->rcv_nxt = 1;
+	dr->snd_nxt = 1;
+
+	dr = &vio->drings[VIO_DRIVER_TX_RING];
+	dr->rcv_nxt = 1;
+	dr->snd_nxt = 1;
+}
+EXPORT_SYMBOL_GPL(sunvnet_handshake_complete_common);
+
+/* The hypervisor interface that implements copying to/from imported
+ * memory from another domain requires that copies are done to 8-byte
+ * aligned buffers, and that the lengths of such copies are also 8-byte
+ * multiples.
+ *
+ * So we align skb->data to an 8-byte multiple and pad-out the data
+ * area so we can round the copy length up to the next multiple of
+ * 8 for the copy.
+ *
+ * The transmitter puts the actual start of the packet 6 bytes into
+ * the buffer it sends over, so that the IP headers after the ethernet
+ * header are aligned properly.  These 6 bytes are not in the descriptor
+ * length, they are simply implied.  This offset is represented using
+ * the VNET_PACKET_SKIP macro.
+ */
+static struct sk_buff *alloc_and_align_skb(struct net_device *dev,
+					   unsigned int len)
+{
+	struct sk_buff *skb;
+	unsigned long addr, off;
+
+	skb = netdev_alloc_skb(dev, len + VNET_PACKET_SKIP + 8 + 8);
+	if (unlikely(!skb))
+		return NULL;
+
+	addr = (unsigned long)skb->data;
+	off = ((addr + 7UL) & ~7UL) - addr;
+	if (off)
+		skb_reserve(skb, off);
+
+	return skb;
+}
+
+static inline void vnet_fullcsum_ipv4(struct sk_buff *skb)
+{
+	struct iphdr *iph = ip_hdr(skb);
+	int offset = skb_transport_offset(skb);
+
+	if (skb->protocol != htons(ETH_P_IP))
+		return;
+	if (iph->protocol != IPPROTO_TCP &&
+	    iph->protocol != IPPROTO_UDP)
+		return;
+	skb->ip_summed = CHECKSUM_NONE;
+	skb->csum_level = 1;
+	skb->csum = 0;
+	if (iph->protocol == IPPROTO_TCP) {
+		struct tcphdr *ptcp = tcp_hdr(skb);
+
+		ptcp->check = 0;
+		skb->csum = skb_checksum(skb, offset, skb->len - offset, 0);
+		ptcp->check = csum_tcpudp_magic(iph->saddr, iph->daddr,
+						skb->len - offset, IPPROTO_TCP,
+						skb->csum);
+	} else if (iph->protocol == IPPROTO_UDP) {
+		struct udphdr *pudp = udp_hdr(skb);
+
+		pudp->check = 0;
+		skb->csum = skb_checksum(skb, offset, skb->len - offset, 0);
+		pudp->check = csum_tcpudp_magic(iph->saddr, iph->daddr,
+						skb->len - offset, IPPROTO_UDP,
+						skb->csum);
+	}
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+static inline void vnet_fullcsum_ipv6(struct sk_buff *skb)
+{
+	struct ipv6hdr *ip6h = ipv6_hdr(skb);
+	int offset = skb_transport_offset(skb);
+
+	if (skb->protocol != htons(ETH_P_IPV6))
+		return;
+	if (ip6h->nexthdr != IPPROTO_TCP &&
+	    ip6h->nexthdr != IPPROTO_UDP)
+		return;
+	skb->ip_summed = CHECKSUM_NONE;
+	skb->csum_level = 1;
+	skb->csum = 0;
+	if (ip6h->nexthdr == IPPROTO_TCP) {
+		struct tcphdr *ptcp = tcp_hdr(skb);
+
+		ptcp->check = 0;
+		skb->csum = skb_checksum(skb, offset, skb->len - offset, 0);
+		ptcp->check = csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
+					      skb->len - offset, IPPROTO_TCP,
+					      skb->csum);
+	} else if (ip6h->nexthdr == IPPROTO_UDP) {
+		struct udphdr *pudp = udp_hdr(skb);
+
+		pudp->check = 0;
+		skb->csum = skb_checksum(skb, offset, skb->len - offset, 0);
+		pudp->check = csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
+					      skb->len - offset, IPPROTO_UDP,
+					      skb->csum);
+	}
+}
+#endif
+
+static int vnet_rx_one(struct vnet_port *port, struct vio_net_desc *desc)
+{
+	struct net_device *dev = VNET_PORT_TO_NET_DEVICE(port);
+	unsigned int len = desc->size;
+	unsigned int copy_len;
+	struct sk_buff *skb;
+	int maxlen;
+	int err;
+
+	err = -EMSGSIZE;
+	if (port->tso && port->tsolen > port->rmtu)
+		maxlen = port->tsolen;
+	else
+		maxlen = port->rmtu;
+	if (unlikely(len < ETH_ZLEN || len > maxlen)) {
+		dev->stats.rx_length_errors++;
+		goto out_dropped;
+	}
+
+	skb = alloc_and_align_skb(dev, len);
+	err = -ENOMEM;
+	if (unlikely(!skb)) {
+		dev->stats.rx_missed_errors++;
+		goto out_dropped;
+	}
+
+	copy_len = (len + VNET_PACKET_SKIP + 7U) & ~7U;
+	skb_put(skb, copy_len);
+	err = ldc_copy(port->vio.lp, LDC_COPY_IN,
+		       skb->data, copy_len, 0,
+		       desc->cookies, desc->ncookies);
+	if (unlikely(err < 0)) {
+		dev->stats.rx_frame_errors++;
+		goto out_free_skb;
+	}
+
+	skb_pull(skb, VNET_PACKET_SKIP);
+	skb_trim(skb, len);
+	skb->protocol = eth_type_trans(skb, dev);
+
+	if (vio_version_after_eq(&port->vio, 1, 8)) {
+		struct vio_net_dext *dext = vio_net_ext(desc);
+
+		skb_reset_network_header(skb);
+
+		if (dext->flags & VNET_PKT_HCK_IPV4_HDRCKSUM) {
+			if (skb->protocol == ETH_P_IP) {
+				struct iphdr *iph = ip_hdr(skb);
+
+				iph->check = 0;
+				ip_send_check(iph);
+			}
+		}
+		if ((dext->flags & VNET_PKT_HCK_FULLCKSUM) &&
+		    skb->ip_summed == CHECKSUM_NONE) {
+			if (skb->protocol == htons(ETH_P_IP)) {
+				struct iphdr *iph = ip_hdr(skb);
+				int ihl = iph->ihl * 4;
+
+				skb_set_transport_header(skb, ihl);
+				vnet_fullcsum_ipv4(skb);
+#if IS_ENABLED(CONFIG_IPV6)
+			} else if (skb->protocol == htons(ETH_P_IPV6)) {
+				skb_set_transport_header(skb,
+							 sizeof(struct ipv6hdr));
+				vnet_fullcsum_ipv6(skb);
+#endif
+			}
+		}
+		if (dext->flags & VNET_PKT_HCK_IPV4_HDRCKSUM_OK) {
+			skb->ip_summed = CHECKSUM_PARTIAL;
+			skb->csum_level = 0;
+			if (dext->flags & VNET_PKT_HCK_FULLCKSUM_OK)
+				skb->csum_level = 1;
+		}
+	}
+
+	skb->ip_summed = port->switch_port ? CHECKSUM_NONE : CHECKSUM_PARTIAL;
+
+	if (unlikely(is_multicast_ether_addr(eth_hdr(skb)->h_dest)))
+		dev->stats.multicast++;
+	dev->stats.rx_packets++;
+	dev->stats.rx_bytes += len;
+	port->stats.rx_packets++;
+	port->stats.rx_bytes += len;
+	napi_gro_receive(&port->napi, skb);
+	return 0;
+
+out_free_skb:
+	kfree_skb(skb);
+
+out_dropped:
+	dev->stats.rx_dropped++;
+	return err;
+}
+
+static int vnet_send_ack(struct vnet_port *port, struct vio_dring_state *dr,
+			 u32 start, u32 end, u8 vio_dring_state)
+{
+	struct vio_dring_data hdr = {
+		.tag = {
+			.type		= VIO_TYPE_DATA,
+			.stype		= VIO_SUBTYPE_ACK,
+			.stype_env	= VIO_DRING_DATA,
+			.sid		= vio_send_sid(&port->vio),
+		},
+		.dring_ident		= dr->ident,
+		.start_idx		= start,
+		.end_idx		= end,
+		.state			= vio_dring_state,
+	};
+	int err, delay;
+	int retries = 0;
+
+	hdr.seq = dr->snd_nxt;
+	delay = 1;
+	do {
+		err = vio_ldc_send(&port->vio, &hdr, sizeof(hdr));
+		if (err > 0) {
+			dr->snd_nxt++;
+			break;
+		}
+		udelay(delay);
+		if ((delay <<= 1) > 128)
+			delay = 128;
+		if (retries++ > VNET_MAX_RETRIES) {
+			pr_info("ECONNRESET %x:%x:%x:%x:%x:%x\n",
+				port->raddr[0], port->raddr[1],
+				port->raddr[2], port->raddr[3],
+				port->raddr[4], port->raddr[5]);
+			break;
+		}
+	} while (err == -EAGAIN);
+
+	if (err <= 0 && vio_dring_state == VIO_DRING_STOPPED) {
+		port->stop_rx_idx = end;
+		port->stop_rx = true;
+	} else {
+		port->stop_rx_idx = 0;
+		port->stop_rx = false;
+	}
+
+	return err;
+}
+
+static struct vio_net_desc *get_rx_desc(struct vnet_port *port,
+					struct vio_dring_state *dr,
+					u32 index)
+{
+	struct vio_net_desc *desc = port->vio.desc_buf;
+	int err;
+
+	err = ldc_get_dring_entry(port->vio.lp, desc, dr->entry_size,
+				  (index * dr->entry_size),
+				  dr->cookies, dr->ncookies);
+	if (err < 0)
+		return ERR_PTR(err);
+
+	return desc;
+}
+
+static int put_rx_desc(struct vnet_port *port,
+		       struct vio_dring_state *dr,
+		       struct vio_net_desc *desc,
+		       u32 index)
+{
+	int err;
+
+	err = ldc_put_dring_entry(port->vio.lp, desc, dr->entry_size,
+				  (index * dr->entry_size),
+				  dr->cookies, dr->ncookies);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static int vnet_walk_rx_one(struct vnet_port *port,
+			    struct vio_dring_state *dr,
+			    u32 index, int *needs_ack)
+{
+	struct vio_net_desc *desc = get_rx_desc(port, dr, index);
+	struct vio_driver_state *vio = &port->vio;
+	int err;
+
+	BUG_ON(!desc);
+	if (IS_ERR(desc))
+		return PTR_ERR(desc);
+
+	if (desc->hdr.state != VIO_DESC_READY)
+		return 1;
+
+	dma_rmb();
+
+	viodbg(DATA, "vio_walk_rx_one desc[%02x:%02x:%08x:%08x:%llx:%llx]\n",
+	       desc->hdr.state, desc->hdr.ack,
+	       desc->size, desc->ncookies,
+	       desc->cookies[0].cookie_addr,
+	       desc->cookies[0].cookie_size);
+
+	err = vnet_rx_one(port, desc);
+	if (err == -ECONNRESET)
+		return err;
+	trace_vnet_rx_one(port->vio._local_sid, port->vio._peer_sid,
+			  index, desc->hdr.ack);
+	desc->hdr.state = VIO_DESC_DONE;
+	err = put_rx_desc(port, dr, desc, index);
+	if (err < 0)
+		return err;
+	*needs_ack = desc->hdr.ack;
+	return 0;
+}
+
+static int vnet_walk_rx(struct vnet_port *port, struct vio_dring_state *dr,
+			u32 start, u32 end, int *npkts, int budget)
+{
+	struct vio_driver_state *vio = &port->vio;
+	int ack_start = -1, ack_end = -1;
+	bool send_ack = true;
+
+	end = (end == (u32)-1) ? vio_dring_prev(dr, start)
+			       : vio_dring_next(dr, end);
+
+	viodbg(DATA, "vnet_walk_rx start[%08x] end[%08x]\n", start, end);
+
+	while (start != end) {
+		int ack = 0, err = vnet_walk_rx_one(port, dr, start, &ack);
+
+		if (err == -ECONNRESET)
+			return err;
+		if (err != 0)
+			break;
+		(*npkts)++;
+		if (ack_start == -1)
+			ack_start = start;
+		ack_end = start;
+		start = vio_dring_next(dr, start);
+		if (ack && start != end) {
+			err = vnet_send_ack(port, dr, ack_start, ack_end,
+					    VIO_DRING_ACTIVE);
+			if (err == -ECONNRESET)
+				return err;
+			ack_start = -1;
+		}
+		if ((*npkts) >= budget) {
+			send_ack = false;
+			break;
+		}
+	}
+	if (unlikely(ack_start == -1)) {
+		ack_end = vio_dring_prev(dr, start);
+		ack_start = ack_end;
+	}
+	if (send_ack) {
+		port->napi_resume = false;
+		trace_vnet_tx_send_stopped_ack(port->vio._local_sid,
+					       port->vio._peer_sid,
+					       ack_end, *npkts);
+		return vnet_send_ack(port, dr, ack_start, ack_end,
+				     VIO_DRING_STOPPED);
+	} else  {
+		trace_vnet_tx_defer_stopped_ack(port->vio._local_sid,
+						port->vio._peer_sid,
+						ack_end, *npkts);
+		port->napi_resume = true;
+		port->napi_stop_idx = ack_end;
+		return 1;
+	}
+}
+
+static int vnet_rx(struct vnet_port *port, void *msgbuf, int *npkts,
+		   int budget)
+{
+	struct vio_dring_data *pkt = msgbuf;
+	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_RX_RING];
+	struct vio_driver_state *vio = &port->vio;
+
+	viodbg(DATA, "vnet_rx stype_env[%04x] seq[%016llx] rcv_nxt[%016llx]\n",
+	       pkt->tag.stype_env, pkt->seq, dr->rcv_nxt);
+
+	if (unlikely(pkt->tag.stype_env != VIO_DRING_DATA))
+		return 0;
+	if (unlikely(pkt->seq != dr->rcv_nxt)) {
+		pr_err("RX out of sequence seq[0x%llx] rcv_nxt[0x%llx]\n",
+		       pkt->seq, dr->rcv_nxt);
+		return 0;
+	}
+
+	if (!port->napi_resume)
+		dr->rcv_nxt++;
+
+	/* XXX Validate pkt->start_idx and pkt->end_idx XXX */
+
+	return vnet_walk_rx(port, dr, pkt->start_idx, pkt->end_idx,
+			    npkts, budget);
+}
+
+static int idx_is_pending(struct vio_dring_state *dr, u32 end)
+{
+	u32 idx = dr->cons;
+	int found = 0;
+
+	while (idx != dr->prod) {
+		if (idx == end) {
+			found = 1;
+			break;
+		}
+		idx = vio_dring_next(dr, idx);
+	}
+	return found;
+}
+
+static int vnet_ack(struct vnet_port *port, void *msgbuf)
+{
+	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];
+	struct vio_dring_data *pkt = msgbuf;
+	struct net_device *dev;
+	u32 end;
+	struct vio_net_desc *desc;
+	struct netdev_queue *txq;
+
+	if (unlikely(pkt->tag.stype_env != VIO_DRING_DATA))
+		return 0;
+
+	end = pkt->end_idx;
+	dev = VNET_PORT_TO_NET_DEVICE(port);
+	netif_tx_lock(dev);
+	if (unlikely(!idx_is_pending(dr, end))) {
+		netif_tx_unlock(dev);
+		return 0;
+	}
+
+	/* sync for race conditions with vnet_start_xmit() and tell xmit it
+	 * is time to send a trigger.
+	 */
+	trace_vnet_rx_stopped_ack(port->vio._local_sid,
+				  port->vio._peer_sid, end);
+	dr->cons = vio_dring_next(dr, end);
+	desc = vio_dring_entry(dr, dr->cons);
+	if (desc->hdr.state == VIO_DESC_READY && !port->start_cons) {
+		/* vnet_start_xmit() just populated this dring but missed
+		 * sending the "start" LDC message to the consumer.
+		 * Send a "start" trigger on its behalf.
+		 */
+		if (__vnet_tx_trigger(port, dr->cons) > 0)
+			port->start_cons = false;
+		else
+			port->start_cons = true;
+	} else {
+		port->start_cons = true;
+	}
+	netif_tx_unlock(dev);
+
+	txq = netdev_get_tx_queue(dev, port->q_index);
+	if (unlikely(netif_tx_queue_stopped(txq) &&
+		     vnet_tx_dring_avail(dr) >= VNET_TX_WAKEUP_THRESH(dr)))
+		return 1;
+
+	return 0;
+}
+
+static int vnet_nack(struct vnet_port *port, void *msgbuf)
+{
+	/* XXX just reset or similar XXX */
+	return 0;
+}
+
+static int handle_mcast(struct vnet_port *port, void *msgbuf)
+{
+	struct vio_net_mcast_info *pkt = msgbuf;
+	struct net_device *dev = VNET_PORT_TO_NET_DEVICE(port);
+
+	if (pkt->tag.stype != VIO_SUBTYPE_ACK)
+		pr_err("%s: Got unexpected MCAST reply [%02x:%02x:%04x:%08x]\n",
+		       dev->name,
+		       pkt->tag.type,
+		       pkt->tag.stype,
+		       pkt->tag.stype_env,
+		       pkt->tag.sid);
+
+	return 0;
+}
+
+/* If the queue is stopped, wake it up so that we'll
+ * send out another START message at the next TX.
+ */
+static void maybe_tx_wakeup(struct vnet_port *port)
+{
+	struct netdev_queue *txq;
+
+	txq = netdev_get_tx_queue(VNET_PORT_TO_NET_DEVICE(port),
+				  port->q_index);
+	__netif_tx_lock(txq, smp_processor_id());
+	if (likely(netif_tx_queue_stopped(txq)))
+		netif_tx_wake_queue(txq);
+	__netif_tx_unlock(txq);
+}
+
+bool sunvnet_port_is_up_common(struct vnet_port *vnet)
+{
+	struct vio_driver_state *vio = &vnet->vio;
+
+	return !!(vio->hs_state & VIO_HS_COMPLETE);
+}
+EXPORT_SYMBOL_GPL(sunvnet_port_is_up_common);
+
+static int vnet_event_napi(struct vnet_port *port, int budget)
+{
+	struct net_device *dev = VNET_PORT_TO_NET_DEVICE(port);
+	struct vio_driver_state *vio = &port->vio;
+	int tx_wakeup, err;
+	int npkts = 0;
+
+	/* we don't expect any other bits */
+	BUG_ON(port->rx_event & ~(LDC_EVENT_DATA_READY |
+				  LDC_EVENT_RESET |
+				  LDC_EVENT_UP));
+
+	/* RESET takes precedent over any other event */
+	if (port->rx_event & LDC_EVENT_RESET) {
+		/* a link went down */
+
+		if (port->vsw == 1) {
+			netif_tx_stop_all_queues(dev);
+			netif_carrier_off(dev);
+		}
+
+		vio_link_state_change(vio, LDC_EVENT_RESET);
+		vnet_port_reset(port);
+		vio_port_up(vio);
+
+		/* If the device is running but its tx queue was
+		 * stopped (due to flow control), restart it.
+		 * This is necessary since vnet_port_reset()
+		 * clears the tx drings and thus we may never get
+		 * back a VIO_TYPE_DATA ACK packet - which is
+		 * the normal mechanism to restart the tx queue.
+		 */
+		if (netif_running(dev))
+			maybe_tx_wakeup(port);
+
+		port->rx_event = 0;
+		port->stats.event_reset++;
+		return 0;
+	}
+
+	if (port->rx_event & LDC_EVENT_UP) {
+		/* a link came up */
+
+		if (port->vsw == 1) {
+			netif_carrier_on(port->dev);
+			netif_tx_start_all_queues(port->dev);
+		}
+
+		vio_link_state_change(vio, LDC_EVENT_UP);
+		port->rx_event = 0;
+		port->stats.event_up++;
+		return 0;
+	}
+
+	err = 0;
+	tx_wakeup = 0;
+	while (1) {
+		union {
+			struct vio_msg_tag tag;
+			u64 raw[8];
+		} msgbuf;
+
+		if (port->napi_resume) {
+			struct vio_dring_data *pkt =
+				(struct vio_dring_data *)&msgbuf;
+			struct vio_dring_state *dr =
+				&port->vio.drings[VIO_DRIVER_RX_RING];
+
+			pkt->tag.type = VIO_TYPE_DATA;
+			pkt->tag.stype = VIO_SUBTYPE_INFO;
+			pkt->tag.stype_env = VIO_DRING_DATA;
+			pkt->seq = dr->rcv_nxt;
+			pkt->start_idx = vio_dring_next(dr,
+							port->napi_stop_idx);
+			pkt->end_idx = -1;
+		} else {
+			err = ldc_read(vio->lp, &msgbuf, sizeof(msgbuf));
+			if (unlikely(err < 0)) {
+				if (err == -ECONNRESET)
+					vio_conn_reset(vio);
+				break;
+			}
+			if (err == 0)
+				break;
+			viodbg(DATA, "TAG [%02x:%02x:%04x:%08x]\n",
+			       msgbuf.tag.type,
+			       msgbuf.tag.stype,
+			       msgbuf.tag.stype_env,
+			       msgbuf.tag.sid);
+			err = vio_validate_sid(vio, &msgbuf.tag);
+			if (err < 0)
+				break;
+		}
+
+		if (likely(msgbuf.tag.type == VIO_TYPE_DATA)) {
+			if (msgbuf.tag.stype == VIO_SUBTYPE_INFO) {
+				if (!sunvnet_port_is_up_common(port)) {
+					/* failures like handshake_failure()
+					 * may have cleaned up dring, but
+					 * NAPI polling may bring us here.
+					 */
+					err = -ECONNRESET;
+					break;
+				}
+				err = vnet_rx(port, &msgbuf, &npkts, budget);
+				if (npkts >= budget)
+					break;
+				if (npkts == 0)
+					break;
+			} else if (msgbuf.tag.stype == VIO_SUBTYPE_ACK) {
+				err = vnet_ack(port, &msgbuf);
+				if (err > 0)
+					tx_wakeup |= err;
+			} else if (msgbuf.tag.stype == VIO_SUBTYPE_NACK) {
+				err = vnet_nack(port, &msgbuf);
+			}
+		} else if (msgbuf.tag.type == VIO_TYPE_CTRL) {
+			if (msgbuf.tag.stype_env == VNET_MCAST_INFO)
+				err = handle_mcast(port, &msgbuf);
+			else
+				err = vio_control_pkt_engine(vio, &msgbuf);
+			if (err)
+				break;
+		} else {
+			err = vnet_handle_unknown(port, &msgbuf);
+		}
+		if (err == -ECONNRESET)
+			break;
+	}
+	if (unlikely(tx_wakeup && err != -ECONNRESET))
+		maybe_tx_wakeup(port);
+	return npkts;
+}
+
+int sunvnet_poll_common(struct napi_struct *napi, int budget)
+{
+	struct vnet_port *port = container_of(napi, struct vnet_port, napi);
+	struct vio_driver_state *vio = &port->vio;
+	int processed = vnet_event_napi(port, budget);
+
+	if (processed < budget) {
+		napi_complete_done(napi, processed);
+		port->rx_event &= ~LDC_EVENT_DATA_READY;
+		vio_set_intr(vio->vdev->rx_ino, HV_INTR_ENABLED);
+	}
+	return processed;
+}
+EXPORT_SYMBOL_GPL(sunvnet_poll_common);
+
+void sunvnet_event_common(void *arg, int event)
+{
+	struct vnet_port *port = arg;
+	struct vio_driver_state *vio = &port->vio;
+
+	port->rx_event |= event;
+	vio_set_intr(vio->vdev->rx_ino, HV_INTR_DISABLED);
+	napi_schedule(&port->napi);
+}
+EXPORT_SYMBOL_GPL(sunvnet_event_common);
+
+static int __vnet_tx_trigger(struct vnet_port *port, u32 start)
+{
+	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];
+	struct vio_dring_data hdr = {
+		.tag = {
+			.type		= VIO_TYPE_DATA,
+			.stype		= VIO_SUBTYPE_INFO,
+			.stype_env	= VIO_DRING_DATA,
+			.sid		= vio_send_sid(&port->vio),
+		},
+		.dring_ident		= dr->ident,
+		.start_idx		= start,
+		.end_idx		= (u32)-1,
+	};
+	int err, delay;
+	int retries = 0;
+
+	if (port->stop_rx) {
+		trace_vnet_tx_pending_stopped_ack(port->vio._local_sid,
+						  port->vio._peer_sid,
+						  port->stop_rx_idx, -1);
+		err = vnet_send_ack(port,
+				    &port->vio.drings[VIO_DRIVER_RX_RING],
+				    port->stop_rx_idx, -1,
+				    VIO_DRING_STOPPED);
+		if (err <= 0)
+			return err;
+	}
+
+	hdr.seq = dr->snd_nxt;
+	delay = 1;
+	do {
+		err = vio_ldc_send(&port->vio, &hdr, sizeof(hdr));
+		if (err > 0) {
+			dr->snd_nxt++;
+			break;
+		}
+		udelay(delay);
+		if ((delay <<= 1) > 128)
+			delay = 128;
+		if (retries++ > VNET_MAX_RETRIES)
+			break;
+	} while (err == -EAGAIN);
+	trace_vnet_tx_trigger(port->vio._local_sid,
+			      port->vio._peer_sid, start, err);
+
+	return err;
+}
+
+static struct sk_buff *vnet_clean_tx_ring(struct vnet_port *port,
+					  unsigned *pending)
+{
+	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];
+	struct sk_buff *skb = NULL;
+	int i, txi;
+
+	*pending = 0;
+
+	txi = dr->prod;
+	for (i = 0; i < VNET_TX_RING_SIZE; ++i) {
+		struct vio_net_desc *d;
+
+		--txi;
+		if (txi < 0)
+			txi = VNET_TX_RING_SIZE - 1;
+
+		d = vio_dring_entry(dr, txi);
+
+		if (d->hdr.state == VIO_DESC_READY) {
+			(*pending)++;
+			continue;
+		}
+		if (port->tx_bufs[txi].skb) {
+			if (d->hdr.state != VIO_DESC_DONE)
+				pr_notice("invalid ring buffer state %d\n",
+					  d->hdr.state);
+			BUG_ON(port->tx_bufs[txi].skb->next);
+
+			port->tx_bufs[txi].skb->next = skb;
+			skb = port->tx_bufs[txi].skb;
+			port->tx_bufs[txi].skb = NULL;
+
+			ldc_unmap(port->vio.lp,
+				  port->tx_bufs[txi].cookies,
+				  port->tx_bufs[txi].ncookies);
+		} else if (d->hdr.state == VIO_DESC_FREE) {
+			break;
+		}
+		d->hdr.state = VIO_DESC_FREE;
+	}
+	return skb;
+}
+
+static inline void vnet_free_skbs(struct sk_buff *skb)
+{
+	struct sk_buff *next;
+
+	while (skb) {
+		next = skb->next;
+		skb->next = NULL;
+		dev_kfree_skb(skb);
+		skb = next;
+	}
+}
+
+void sunvnet_clean_timer_expire_common(struct timer_list *t)
+{
+	struct vnet_port *port = from_timer(port, t, clean_timer);
+	struct sk_buff *freeskbs;
+	unsigned pending;
+
+	netif_tx_lock(VNET_PORT_TO_NET_DEVICE(port));
+	freeskbs = vnet_clean_tx_ring(port, &pending);
+	netif_tx_unlock(VNET_PORT_TO_NET_DEVICE(port));
+
+	vnet_free_skbs(freeskbs);
+
+	if (pending)
+		(void)mod_timer(&port->clean_timer,
+				jiffies + VNET_CLEAN_TIMEOUT);
+	 else
+		del_timer(&port->clean_timer);
+}
+EXPORT_SYMBOL_GPL(sunvnet_clean_timer_expire_common);
+
+static inline int vnet_skb_map(struct ldc_channel *lp, struct sk_buff *skb,
+			       struct ldc_trans_cookie *cookies, int ncookies,
+			       unsigned int map_perm)
+{
+	int i, nc, err, blen;
+
+	/* header */
+	blen = skb_headlen(skb);
+	if (blen < ETH_ZLEN)
+		blen = ETH_ZLEN;
+	blen += VNET_PACKET_SKIP;
+	blen += 8 - (blen & 7);
+
+	err = ldc_map_single(lp, skb->data - VNET_PACKET_SKIP, blen, cookies,
+			     ncookies, map_perm);
+	if (err < 0)
+		return err;
+	nc = err;
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+		skb_frag_t *f = &skb_shinfo(skb)->frags[i];
+		u8 *vaddr;
+
+		if (nc < ncookies) {
+			vaddr = kmap_atomic(skb_frag_page(f));
+			blen = skb_frag_size(f);
+			blen += 8 - (blen & 7);
+			err = ldc_map_single(lp, vaddr + f->page_offset,
+					     blen, cookies + nc, ncookies - nc,
+					     map_perm);
+			kunmap_atomic(vaddr);
+		} else {
+			err = -EMSGSIZE;
+		}
+
+		if (err < 0) {
+			ldc_unmap(lp, cookies, nc);
+			return err;
+		}
+		nc += err;
+	}
+	return nc;
+}
+
+static inline struct sk_buff *vnet_skb_shape(struct sk_buff *skb, int ncookies)
+{
+	struct sk_buff *nskb;
+	int i, len, pad, docopy;
+
+	len = skb->len;
+	pad = 0;
+	if (len < ETH_ZLEN) {
+		pad += ETH_ZLEN - skb->len;
+		len += pad;
+	}
+	len += VNET_PACKET_SKIP;
+	pad += 8 - (len & 7);
+
+	/* make sure we have enough cookies and alignment in every frag */
+	docopy = skb_shinfo(skb)->nr_frags >= ncookies;
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+		skb_frag_t *f = &skb_shinfo(skb)->frags[i];
+
+		docopy |= f->page_offset & 7;
+	}
+	if (((unsigned long)skb->data & 7) != VNET_PACKET_SKIP ||
+	    skb_tailroom(skb) < pad ||
+	    skb_headroom(skb) < VNET_PACKET_SKIP || docopy) {
+		int start = 0, offset;
+		__wsum csum;
+
+		len = skb->len > ETH_ZLEN ? skb->len : ETH_ZLEN;
+		nskb = alloc_and_align_skb(skb->dev, len);
+		if (!nskb) {
+			dev_kfree_skb(skb);
+			return NULL;
+		}
+		skb_reserve(nskb, VNET_PACKET_SKIP);
+
+		nskb->protocol = skb->protocol;
+		offset = skb_mac_header(skb) - skb->data;
+		skb_set_mac_header(nskb, offset);
+		offset = skb_network_header(skb) - skb->data;
+		skb_set_network_header(nskb, offset);
+		offset = skb_transport_header(skb) - skb->data;
+		skb_set_transport_header(nskb, offset);
+
+		offset = 0;
+		nskb->csum_offset = skb->csum_offset;
+		nskb->ip_summed = skb->ip_summed;
+
+		if (skb->ip_summed == CHECKSUM_PARTIAL)
+			start = skb_checksum_start_offset(skb);
+		if (start) {
+			int offset = start + nskb->csum_offset;
+
+			/* copy the headers, no csum here */
+			if (skb_copy_bits(skb, 0, nskb->data, start)) {
+				dev_kfree_skb(nskb);
+				dev_kfree_skb(skb);
+				return NULL;
+			}
+
+			/* copy the rest, with csum calculation */
+			*(__sum16 *)(skb->data + offset) = 0;
+			csum = skb_copy_and_csum_bits(skb, start,
+						      nskb->data + start,
+						      skb->len - start, 0);
+
+			/* add in the header checksums */
+			if (skb->protocol == htons(ETH_P_IP)) {
+				struct iphdr *iph = ip_hdr(nskb);
+
+				if (iph->protocol == IPPROTO_TCP ||
+				    iph->protocol == IPPROTO_UDP) {
+					csum = csum_tcpudp_magic(iph->saddr,
+								 iph->daddr,
+								 skb->len - start,
+								 iph->protocol,
+								 csum);
+				}
+			} else if (skb->protocol == htons(ETH_P_IPV6)) {
+				struct ipv6hdr *ip6h = ipv6_hdr(nskb);
+
+				if (ip6h->nexthdr == IPPROTO_TCP ||
+				    ip6h->nexthdr == IPPROTO_UDP) {
+					csum = csum_ipv6_magic(&ip6h->saddr,
+							       &ip6h->daddr,
+							       skb->len - start,
+							       ip6h->nexthdr,
+							       csum);
+				}
+			}
+
+			/* save the final result */
+			*(__sum16 *)(nskb->data + offset) = csum;
+
+			nskb->ip_summed = CHECKSUM_NONE;
+		} else if (skb_copy_bits(skb, 0, nskb->data, skb->len)) {
+			dev_kfree_skb(nskb);
+			dev_kfree_skb(skb);
+			return NULL;
+		}
+		(void)skb_put(nskb, skb->len);
+		if (skb_is_gso(skb)) {
+			skb_shinfo(nskb)->gso_size = skb_shinfo(skb)->gso_size;
+			skb_shinfo(nskb)->gso_type = skb_shinfo(skb)->gso_type;
+		}
+		nskb->queue_mapping = skb->queue_mapping;
+		dev_kfree_skb(skb);
+		skb = nskb;
+	}
+	return skb;
+}
+
+static netdev_tx_t
+vnet_handle_offloads(struct vnet_port *port, struct sk_buff *skb,
+		     struct vnet_port *(*vnet_tx_port)
+		     (struct sk_buff *, struct net_device *))
+{
+	struct net_device *dev = VNET_PORT_TO_NET_DEVICE(port);
+	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_TX_RING];
+	struct sk_buff *segs;
+	int maclen, datalen;
+	int status;
+	int gso_size, gso_type, gso_segs;
+	int hlen = skb_transport_header(skb) - skb_mac_header(skb);
+	int proto = IPPROTO_IP;
+
+	if (skb->protocol == htons(ETH_P_IP))
+		proto = ip_hdr(skb)->protocol;
+	else if (skb->protocol == htons(ETH_P_IPV6))
+		proto = ipv6_hdr(skb)->nexthdr;
+
+	if (proto == IPPROTO_TCP) {
+		hlen += tcp_hdr(skb)->doff * 4;
+	} else if (proto == IPPROTO_UDP) {
+		hlen += sizeof(struct udphdr);
+	} else {
+		pr_err("vnet_handle_offloads GSO with unknown transport "
+		       "protocol %d tproto %d\n", skb->protocol, proto);
+		hlen = 128; /* XXX */
+	}
+	datalen = port->tsolen - hlen;
+
+	gso_size = skb_shinfo(skb)->gso_size;
+	gso_type = skb_shinfo(skb)->gso_type;
+	gso_segs = skb_shinfo(skb)->gso_segs;
+
+	if (port->tso && gso_size < datalen)
+		gso_segs = DIV_ROUND_UP(skb->len - hlen, datalen);
+
+	if (unlikely(vnet_tx_dring_avail(dr) < gso_segs)) {
+		struct netdev_queue *txq;
+
+		txq  = netdev_get_tx_queue(dev, port->q_index);
+		netif_tx_stop_queue(txq);
+		if (vnet_tx_dring_avail(dr) < skb_shinfo(skb)->gso_segs)
+			return NETDEV_TX_BUSY;
+		netif_tx_wake_queue(txq);
+	}
+
+	maclen = skb_network_header(skb) - skb_mac_header(skb);
+	skb_pull(skb, maclen);
+
+	if (port->tso && gso_size < datalen) {
+		if (skb_unclone(skb, GFP_ATOMIC))
+			goto out_dropped;
+
+		/* segment to TSO size */
+		skb_shinfo(skb)->gso_size = datalen;
+		skb_shinfo(skb)->gso_segs = gso_segs;
+	}
+	segs = skb_gso_segment(skb, dev->features & ~NETIF_F_TSO);
+	if (IS_ERR(segs))
+		goto out_dropped;
+
+	skb_push(skb, maclen);
+	skb_reset_mac_header(skb);
+
+	status = 0;
+	while (segs) {
+		struct sk_buff *curr = segs;
+
+		segs = segs->next;
+		curr->next = NULL;
+		if (port->tso && curr->len > dev->mtu) {
+			skb_shinfo(curr)->gso_size = gso_size;
+			skb_shinfo(curr)->gso_type = gso_type;
+			skb_shinfo(curr)->gso_segs =
+				DIV_ROUND_UP(curr->len - hlen, gso_size);
+		} else {
+			skb_shinfo(curr)->gso_size = 0;
+		}
+
+		skb_push(curr, maclen);
+		skb_reset_mac_header(curr);
+		memcpy(skb_mac_header(curr), skb_mac_header(skb),
+		       maclen);
+		curr->csum_start = skb_transport_header(curr) - curr->head;
+		if (ip_hdr(curr)->protocol == IPPROTO_TCP)
+			curr->csum_offset = offsetof(struct tcphdr, check);
+		else if (ip_hdr(curr)->protocol == IPPROTO_UDP)
+			curr->csum_offset = offsetof(struct udphdr, check);
+
+		if (!(status & NETDEV_TX_MASK))
+			status = sunvnet_start_xmit_common(curr, dev,
+							   vnet_tx_port);
+		if (status & NETDEV_TX_MASK)
+			dev_kfree_skb_any(curr);
+	}
+
+	if (!(status & NETDEV_TX_MASK))
+		dev_kfree_skb_any(skb);
+	return status;
+out_dropped:
+	dev->stats.tx_dropped++;
+	dev_kfree_skb_any(skb);
+	return NETDEV_TX_OK;
+}
+
+netdev_tx_t
+sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev,
+			  struct vnet_port *(*vnet_tx_port)
+			  (struct sk_buff *, struct net_device *))
+{
+	struct vnet_port *port = NULL;
+	struct vio_dring_state *dr;
+	struct vio_net_desc *d;
+	unsigned int len;
+	struct sk_buff *freeskbs = NULL;
+	int i, err, txi;
+	unsigned pending = 0;
+	struct netdev_queue *txq;
+
+	rcu_read_lock();
+	port = vnet_tx_port(skb, dev);
+	if (unlikely(!port))
+		goto out_dropped;
+
+	if (skb_is_gso(skb) && skb->len > port->tsolen) {
+		err = vnet_handle_offloads(port, skb, vnet_tx_port);
+		rcu_read_unlock();
+		return err;
+	}
+
+	if (!skb_is_gso(skb) && skb->len > port->rmtu) {
+		unsigned long localmtu = port->rmtu - ETH_HLEN;
+
+		if (vio_version_after_eq(&port->vio, 1, 3))
+			localmtu -= VLAN_HLEN;
+
+		if (skb->protocol == htons(ETH_P_IP))
+			icmp_ndo_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
+				      htonl(localmtu));
+#if IS_ENABLED(CONFIG_IPV6)
+		else if (skb->protocol == htons(ETH_P_IPV6))
+			icmpv6_ndo_send(skb, ICMPV6_PKT_TOOBIG, 0, localmtu);
+#endif
+		goto out_dropped;
+	}
+
+	skb = vnet_skb_shape(skb, 2);
+
+	if (unlikely(!skb))
+		goto out_dropped;
+
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		if (skb->protocol == htons(ETH_P_IP))
+			vnet_fullcsum_ipv4(skb);
+#if IS_ENABLED(CONFIG_IPV6)
+		else if (skb->protocol == htons(ETH_P_IPV6))
+			vnet_fullcsum_ipv6(skb);
+#endif
+	}
+
+	dr = &port->vio.drings[VIO_DRIVER_TX_RING];
+	i = skb_get_queue_mapping(skb);
+	txq = netdev_get_tx_queue(dev, i);
+	if (unlikely(vnet_tx_dring_avail(dr) < 1)) {
+		if (!netif_tx_queue_stopped(txq)) {
+			netif_tx_stop_queue(txq);
+
+			/* This is a hard error, log it. */
+			netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
+			dev->stats.tx_errors++;
+		}
+		rcu_read_unlock();
+		return NETDEV_TX_BUSY;
+	}
+
+	d = vio_dring_cur(dr);
+
+	txi = dr->prod;
+
+	freeskbs = vnet_clean_tx_ring(port, &pending);
+
+	BUG_ON(port->tx_bufs[txi].skb);
+
+	len = skb->len;
+	if (len < ETH_ZLEN)
+		len = ETH_ZLEN;
+
+	err = vnet_skb_map(port->vio.lp, skb, port->tx_bufs[txi].cookies, 2,
+			   (LDC_MAP_SHADOW | LDC_MAP_DIRECT | LDC_MAP_RW));
+	if (err < 0) {
+		netdev_info(dev, "tx buffer map error %d\n", err);
+		goto out_dropped;
+	}
+
+	port->tx_bufs[txi].skb = skb;
+	skb = NULL;
+	port->tx_bufs[txi].ncookies = err;
+
+	/* We don't rely on the ACKs to free the skb in vnet_start_xmit(),
+	 * thus it is safe to not set VIO_ACK_ENABLE for each transmission:
+	 * the protocol itself does not require it as long as the peer
+	 * sends a VIO_SUBTYPE_ACK for VIO_DRING_STOPPED.
+	 *
+	 * An ACK for every packet in the ring is expensive as the
+	 * sending of LDC messages is slow and affects performance.
+	 */
+	d->hdr.ack = VIO_ACK_DISABLE;
+	d->size = len;
+	d->ncookies = port->tx_bufs[txi].ncookies;
+	for (i = 0; i < d->ncookies; i++)
+		d->cookies[i] = port->tx_bufs[txi].cookies[i];
+	if (vio_version_after_eq(&port->vio, 1, 7)) {
+		struct vio_net_dext *dext = vio_net_ext(d);
+
+		memset(dext, 0, sizeof(*dext));
+		if (skb_is_gso(port->tx_bufs[txi].skb)) {
+			dext->ipv4_lso_mss = skb_shinfo(port->tx_bufs[txi].skb)
+					     ->gso_size;
+			dext->flags |= VNET_PKT_IPV4_LSO;
+		}
+		if (vio_version_after_eq(&port->vio, 1, 8) &&
+		    !port->switch_port) {
+			dext->flags |= VNET_PKT_HCK_IPV4_HDRCKSUM_OK;
+			dext->flags |= VNET_PKT_HCK_FULLCKSUM_OK;
+		}
+	}
+
+	/* This has to be a non-SMP write barrier because we are writing
+	 * to memory which is shared with the peer LDOM.
+	 */
+	dma_wmb();
+
+	d->hdr.state = VIO_DESC_READY;
+
+	/* Exactly one ldc "start" trigger (for dr->cons) needs to be sent
+	 * to notify the consumer that some descriptors are READY.
+	 * After that "start" trigger, no additional triggers are needed until
+	 * a DRING_STOPPED is received from the consumer. The dr->cons field
+	 * (set up by vnet_ack()) has the value of the next dring index
+	 * that has not yet been ack-ed. We send a "start" trigger here
+	 * if, and only if, start_cons is true (reset it afterward). Conversely,
+	 * vnet_ack() should check if the dring corresponding to cons
+	 * is marked READY, but start_cons was false.
+	 * If so, vnet_ack() should send out the missed "start" trigger.
+	 *
+	 * Note that the dma_wmb() above makes sure the cookies et al. are
+	 * not globally visible before the VIO_DESC_READY, and that the
+	 * stores are ordered correctly by the compiler. The consumer will
+	 * not proceed until the VIO_DESC_READY is visible assuring that
+	 * the consumer does not observe anything related to descriptors
+	 * out of order. The HV trap from the LDC start trigger is the
+	 * producer to consumer announcement that work is available to the
+	 * consumer
+	 */
+	if (!port->start_cons) { /* previous trigger suffices */
+		trace_vnet_skip_tx_trigger(port->vio._local_sid,
+					   port->vio._peer_sid, dr->cons);
+		goto ldc_start_done;
+	}
+
+	err = __vnet_tx_trigger(port, dr->cons);
+	if (unlikely(err < 0)) {
+		netdev_info(dev, "TX trigger error %d\n", err);
+		d->hdr.state = VIO_DESC_FREE;
+		skb = port->tx_bufs[txi].skb;
+		port->tx_bufs[txi].skb = NULL;
+		dev->stats.tx_carrier_errors++;
+		goto out_dropped;
+	}
+
+ldc_start_done:
+	port->start_cons = false;
+
+	dev->stats.tx_packets++;
+	dev->stats.tx_bytes += port->tx_bufs[txi].skb->len;
+	port->stats.tx_packets++;
+	port->stats.tx_bytes += port->tx_bufs[txi].skb->len;
+
+	dr->prod = (dr->prod + 1) & (VNET_TX_RING_SIZE - 1);
+	if (unlikely(vnet_tx_dring_avail(dr) < 1)) {
+		netif_tx_stop_queue(txq);
+		smp_rmb();
+		if (vnet_tx_dring_avail(dr) > VNET_TX_WAKEUP_THRESH(dr))
+			netif_tx_wake_queue(txq);
+	}
+
+	(void)mod_timer(&port->clean_timer, jiffies + VNET_CLEAN_TIMEOUT);
+	rcu_read_unlock();
+
+	vnet_free_skbs(freeskbs);
+
+	return NETDEV_TX_OK;
+
+out_dropped:
+	if (pending)
+		(void)mod_timer(&port->clean_timer,
+				jiffies + VNET_CLEAN_TIMEOUT);
+	else if (port)
+		del_timer(&port->clean_timer);
+	rcu_read_unlock();
+	if (skb)
+		dev_kfree_skb(skb);
+	vnet_free_skbs(freeskbs);
+	dev->stats.tx_dropped++;
+	return NETDEV_TX_OK;
+}
+EXPORT_SYMBOL_GPL(sunvnet_start_xmit_common);
+
+void sunvnet_tx_timeout_common(struct net_device *dev)
+{
+	/* XXX Implement me XXX */
+}
+EXPORT_SYMBOL_GPL(sunvnet_tx_timeout_common);
+
+int sunvnet_open_common(struct net_device *dev)
+{
+	netif_carrier_on(dev);
+	netif_tx_start_all_queues(dev);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(sunvnet_open_common);
+
+int sunvnet_close_common(struct net_device *dev)
+{
+	netif_tx_stop_all_queues(dev);
+	netif_carrier_off(dev);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(sunvnet_close_common);
+
+static struct vnet_mcast_entry *__vnet_mc_find(struct vnet *vp, u8 *addr)
+{
+	struct vnet_mcast_entry *m;
+
+	for (m = vp->mcast_list; m; m = m->next) {
+		if (ether_addr_equal(m->addr, addr))
+			return m;
+	}
+	return NULL;
+}
+
+static void __update_mc_list(struct vnet *vp, struct net_device *dev)
+{
+	struct netdev_hw_addr *ha;
+
+	netdev_for_each_mc_addr(ha, dev) {
+		struct vnet_mcast_entry *m;
+
+		m = __vnet_mc_find(vp, ha->addr);
+		if (m) {
+			m->hit = 1;
+			continue;
+		}
+
+		if (!m) {
+			m = kzalloc(sizeof(*m), GFP_ATOMIC);
+			if (!m)
+				continue;
+			memcpy(m->addr, ha->addr, ETH_ALEN);
+			m->hit = 1;
+
+			m->next = vp->mcast_list;
+			vp->mcast_list = m;
+		}
+	}
+}
+
+static void __send_mc_list(struct vnet *vp, struct vnet_port *port)
+{
+	struct vio_net_mcast_info info;
+	struct vnet_mcast_entry *m, **pp;
+	int n_addrs;
+
+	memset(&info, 0, sizeof(info));
+
+	info.tag.type = VIO_TYPE_CTRL;
+	info.tag.stype = VIO_SUBTYPE_INFO;
+	info.tag.stype_env = VNET_MCAST_INFO;
+	info.tag.sid = vio_send_sid(&port->vio);
+	info.set = 1;
+
+	n_addrs = 0;
+	for (m = vp->mcast_list; m; m = m->next) {
+		if (m->sent)
+			continue;
+		m->sent = 1;
+		memcpy(&info.mcast_addr[n_addrs * ETH_ALEN],
+		       m->addr, ETH_ALEN);
+		if (++n_addrs == VNET_NUM_MCAST) {
+			info.count = n_addrs;
+
+			(void)vio_ldc_send(&port->vio, &info,
+					   sizeof(info));
+			n_addrs = 0;
+		}
+	}
+	if (n_addrs) {
+		info.count = n_addrs;
+		(void)vio_ldc_send(&port->vio, &info, sizeof(info));
+	}
+
+	info.set = 0;
+
+	n_addrs = 0;
+	pp = &vp->mcast_list;
+	while ((m = *pp) != NULL) {
+		if (m->hit) {
+			m->hit = 0;
+			pp = &m->next;
+			continue;
+		}
+
+		memcpy(&info.mcast_addr[n_addrs * ETH_ALEN],
+		       m->addr, ETH_ALEN);
+		if (++n_addrs == VNET_NUM_MCAST) {
+			info.count = n_addrs;
+			(void)vio_ldc_send(&port->vio, &info,
+					   sizeof(info));
+			n_addrs = 0;
+		}
+
+		*pp = m->next;
+		kfree(m);
+	}
+	if (n_addrs) {
+		info.count = n_addrs;
+		(void)vio_ldc_send(&port->vio, &info, sizeof(info));
+	}
+}
+
+void sunvnet_set_rx_mode_common(struct net_device *dev, struct vnet *vp)
+{
+	struct vnet_port *port;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(port, &vp->port_list, list) {
+		if (port->switch_port) {
+			__update_mc_list(vp, dev);
+			__send_mc_list(vp, port);
+			break;
+		}
+	}
+	rcu_read_unlock();
+}
+EXPORT_SYMBOL_GPL(sunvnet_set_rx_mode_common);
+
+int sunvnet_set_mac_addr_common(struct net_device *dev, void *p)
+{
+	return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(sunvnet_set_mac_addr_common);
+
+void sunvnet_port_free_tx_bufs_common(struct vnet_port *port)
+{
+	struct vio_dring_state *dr;
+	int i;
+
+	dr = &port->vio.drings[VIO_DRIVER_TX_RING];
+
+	if (!dr->base)
+		return;
+
+	for (i = 0; i < VNET_TX_RING_SIZE; i++) {
+		struct vio_net_desc *d;
+		void *skb = port->tx_bufs[i].skb;
+
+		if (!skb)
+			continue;
+
+		d = vio_dring_entry(dr, i);
+
+		ldc_unmap(port->vio.lp,
+			  port->tx_bufs[i].cookies,
+			  port->tx_bufs[i].ncookies);
+		dev_kfree_skb(skb);
+		port->tx_bufs[i].skb = NULL;
+		d->hdr.state = VIO_DESC_FREE;
+	}
+	ldc_free_exp_dring(port->vio.lp, dr->base,
+			   (dr->entry_size * dr->num_entries),
+			   dr->cookies, dr->ncookies);
+	dr->base = NULL;
+	dr->entry_size = 0;
+	dr->num_entries = 0;
+	dr->pending = 0;
+	dr->ncookies = 0;
+}
+EXPORT_SYMBOL_GPL(sunvnet_port_free_tx_bufs_common);
+
+void vnet_port_reset(struct vnet_port *port)
+{
+	del_timer(&port->clean_timer);
+	sunvnet_port_free_tx_bufs_common(port);
+	port->rmtu = 0;
+	port->tso = (port->vsw == 0);  /* no tso in vsw, misbehaves in bridge */
+	port->tsolen = 0;
+}
+EXPORT_SYMBOL_GPL(vnet_port_reset);
+
+static int vnet_port_alloc_tx_ring(struct vnet_port *port)
+{
+	struct vio_dring_state *dr;
+	unsigned long len, elen;
+	int i, err, ncookies;
+	void *dring;
+
+	dr = &port->vio.drings[VIO_DRIVER_TX_RING];
+
+	elen = sizeof(struct vio_net_desc) +
+	       sizeof(struct ldc_trans_cookie) * 2;
+	if (vio_version_after_eq(&port->vio, 1, 7))
+		elen += sizeof(struct vio_net_dext);
+	len = VNET_TX_RING_SIZE * elen;
+
+	ncookies = VIO_MAX_RING_COOKIES;
+	dring = ldc_alloc_exp_dring(port->vio.lp, len,
+				    dr->cookies, &ncookies,
+				    (LDC_MAP_SHADOW |
+				     LDC_MAP_DIRECT |
+				     LDC_MAP_RW));
+	if (IS_ERR(dring)) {
+		err = PTR_ERR(dring);
+		goto err_out;
+	}
+
+	dr->base = dring;
+	dr->entry_size = elen;
+	dr->num_entries = VNET_TX_RING_SIZE;
+	dr->prod = 0;
+	dr->cons = 0;
+	port->start_cons  = true; /* need an initial trigger */
+	dr->pending = VNET_TX_RING_SIZE;
+	dr->ncookies = ncookies;
+
+	for (i = 0; i < VNET_TX_RING_SIZE; ++i) {
+		struct vio_net_desc *d;
+
+		d = vio_dring_entry(dr, i);
+		d->hdr.state = VIO_DESC_FREE;
+	}
+	return 0;
+
+err_out:
+	sunvnet_port_free_tx_bufs_common(port);
+
+	return err;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+void sunvnet_poll_controller_common(struct net_device *dev, struct vnet *vp)
+{
+	struct vnet_port *port;
+	unsigned long flags;
+
+	spin_lock_irqsave(&vp->lock, flags);
+	if (!list_empty(&vp->port_list)) {
+		port = list_entry(vp->port_list.next, struct vnet_port, list);
+		napi_schedule(&port->napi);
+	}
+	spin_unlock_irqrestore(&vp->lock, flags);
+}
+EXPORT_SYMBOL_GPL(sunvnet_poll_controller_common);
+#endif
+
+void sunvnet_port_add_txq_common(struct vnet_port *port)
+{
+	struct vnet *vp = port->vp;
+	int smallest = 0;
+	int i;
+
+	/* find the first least-used q
+	 * When there are more ldoms than q's, we start to
+	 * double up on ports per queue.
+	 */
+	for (i = 0; i < VNET_MAX_TXQS; i++) {
+		if (vp->q_used[i] == 0) {
+			smallest = i;
+			break;
+		}
+		if (vp->q_used[i] < vp->q_used[smallest])
+			smallest = i;
+	}
+
+	vp->nports++;
+	vp->q_used[smallest]++;
+	port->q_index = smallest;
+}
+EXPORT_SYMBOL_GPL(sunvnet_port_add_txq_common);
+
+void sunvnet_port_rm_txq_common(struct vnet_port *port)
+{
+	port->vp->nports--;
+	port->vp->q_used[port->q_index]--;
+	port->q_index = 0;
+}
+EXPORT_SYMBOL_GPL(sunvnet_port_rm_txq_common);
diff --git a/drivers/net/ethernet/sun/sunvnet_common.h b/drivers/net/ethernet/sun/sunvnet_common.h
new file mode 100644
index 000000000..2b808d248
--- /dev/null
+++ b/drivers/net/ethernet/sun/sunvnet_common.h
@@ -0,0 +1,157 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SUNVNETCOMMON_H
+#define _SUNVNETCOMMON_H
+
+#include <linux/interrupt.h>
+
+/* length of time (or less) we expect pending descriptors to be marked
+ * as VIO_DESC_DONE and skbs ready to be freed
+ */
+#define	VNET_CLEAN_TIMEOUT		((HZ / 100) + 1)
+
+#define VNET_MAXPACKET			(65535ULL + ETH_HLEN + VLAN_HLEN)
+#define VNET_TX_RING_SIZE		512
+#define VNET_TX_WAKEUP_THRESH(dr)	((dr)->pending / 4)
+
+#define	VNET_MINTSO	 2048	/* VIO protocol's minimum TSO len */
+#define	VNET_MAXTSO	65535	/* VIO protocol's maximum TSO len */
+
+#define VNET_MAX_MTU	65535
+
+/* VNET packets are sent in buffers with the first 6 bytes skipped
+ * so that after the ethernet header the IPv4/IPv6 headers are aligned
+ * properly.
+ */
+#define VNET_PACKET_SKIP		6
+
+#define	VNET_MAXCOOKIES			(VNET_MAXPACKET / PAGE_SIZE + 1)
+
+#define	VNET_MAX_TXQS		16
+
+struct vnet_tx_entry {
+	struct sk_buff		*skb;
+	unsigned int		ncookies;
+	struct ldc_trans_cookie	cookies[VNET_MAXCOOKIES];
+};
+
+struct vnet;
+
+struct vnet_port_stats {
+	/* keep them all the same size */
+	u32 rx_bytes;
+	u32 tx_bytes;
+	u32 rx_packets;
+	u32 tx_packets;
+	u32 event_up;
+	u32 event_reset;
+	u32 q_placeholder;
+};
+
+#define NUM_VNET_PORT_STATS  (sizeof(struct vnet_port_stats) / sizeof(u32))
+
+/* Structure to describe a vnet-port or vsw-port in the MD.
+ * If the vsw bit is set, this structure represents a vswitch
+ * port, and the net_device can be found from ->dev. If the
+ * vsw bit is not set, the net_device is available from ->vp->dev.
+ * See the VNET_PORT_TO_NET_DEVICE macro below.
+ */
+struct vnet_port {
+	struct vio_driver_state	vio;
+
+	struct vnet_port_stats stats;
+
+	struct hlist_node	hash;
+	u8			raddr[ETH_ALEN];
+	unsigned		switch_port:1;
+	unsigned		tso:1;
+	unsigned		vsw:1;
+	unsigned		__pad:13;
+
+	struct vnet		*vp;
+	struct net_device	*dev;
+
+	struct vnet_tx_entry	tx_bufs[VNET_TX_RING_SIZE];
+
+	struct list_head	list;
+
+	u32			stop_rx_idx;
+	bool			stop_rx;
+	bool			start_cons;
+
+	struct timer_list	clean_timer;
+
+	u64			rmtu;
+	u16			tsolen;
+
+	struct napi_struct	napi;
+	u32			napi_stop_idx;
+	bool			napi_resume;
+	int			rx_event;
+	u16			q_index;
+};
+
+static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio)
+{
+	return container_of(vio, struct vnet_port, vio);
+}
+
+#define VNET_PORT_HASH_SIZE	16
+#define VNET_PORT_HASH_MASK	(VNET_PORT_HASH_SIZE - 1)
+
+static inline unsigned int vnet_hashfn(u8 *mac)
+{
+	unsigned int val = mac[4] ^ mac[5];
+
+	return val & (VNET_PORT_HASH_MASK);
+}
+
+struct vnet_mcast_entry {
+	u8			addr[ETH_ALEN];
+	u8			sent;
+	u8			hit;
+	struct vnet_mcast_entry	*next;
+};
+
+struct vnet {
+	spinlock_t		lock; /* Protects port_list and port_hash.  */
+	struct net_device	*dev;
+	u32			msg_enable;
+	u8			q_used[VNET_MAX_TXQS];
+	struct list_head	port_list;
+	struct hlist_head	port_hash[VNET_PORT_HASH_SIZE];
+	struct vnet_mcast_entry	*mcast_list;
+	struct list_head	list;
+	u64			local_mac;
+	int			nports;
+};
+
+/* Def used by common code to get the net_device from the proper location */
+#define VNET_PORT_TO_NET_DEVICE(__port) \
+	((__port)->vsw ? (__port)->dev : (__port)->vp->dev)
+
+/* Common funcs */
+void sunvnet_clean_timer_expire_common(struct timer_list *t);
+int sunvnet_open_common(struct net_device *dev);
+int sunvnet_close_common(struct net_device *dev);
+void sunvnet_set_rx_mode_common(struct net_device *dev, struct vnet *vp);
+int sunvnet_set_mac_addr_common(struct net_device *dev, void *p);
+void sunvnet_tx_timeout_common(struct net_device *dev);
+netdev_tx_t
+sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev,
+			  struct vnet_port *(*vnet_tx_port)
+			  (struct sk_buff *, struct net_device *));
+#ifdef CONFIG_NET_POLL_CONTROLLER
+void sunvnet_poll_controller_common(struct net_device *dev, struct vnet *vp);
+#endif
+void sunvnet_event_common(void *arg, int event);
+int sunvnet_send_attr_common(struct vio_driver_state *vio);
+int sunvnet_handle_attr_common(struct vio_driver_state *vio, void *arg);
+void sunvnet_handshake_complete_common(struct vio_driver_state *vio);
+int sunvnet_poll_common(struct napi_struct *napi, int budget);
+void sunvnet_port_free_tx_bufs_common(struct vnet_port *port);
+void vnet_port_reset(struct vnet_port *port);
+bool sunvnet_port_is_up_common(struct vnet_port *vnet);
+void sunvnet_port_add_txq_common(struct vnet_port *port);
+void sunvnet_port_rm_txq_common(struct vnet_port *port);
+
+#endif /* _SUNVNETCOMMON_H */