Adding upstream version 6.1.76.upstream/6.1.76

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

5 files changed, 4350 insertions, 0 deletions

diff --git a/drivers/net/ethernet/dlink/Kconfig b/drivers/net/ethernet/dlink/Kconfig
new file mode 100644
index 000000000..0d77f84c8
--- /dev/null
+++ b/drivers/net/ethernet/dlink/Kconfig
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# D-Link device configuration
+#
+
+config NET_VENDOR_DLINK
+	bool "D-Link devices"
+	default y
+	depends on PCI
+	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 D-Link devices. If you say Y, you will be asked for
+	  your specific card in the following questions.
+
+if NET_VENDOR_DLINK
+
+config DL2K
+	tristate "DL2000/TC902x/IP1000A-based Gigabit Ethernet support"
+	depends on PCI
+	select CRC32
+	help
+	  This driver supports DL2000/TC902x/IP1000A-based Gigabit ethernet cards,
+	  which includes
+	  D-Link DGE-550T Gigabit Ethernet Adapter.
+	  D-Link DL2000-based Gigabit Ethernet Adapter.
+	  Sundance/Tamarack TC902x Gigabit Ethernet Adapter.
+	  ICPlus IP1000A-based cards
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called dl2k.
+
+config SUNDANCE
+	tristate "Sundance Alta support"
+	depends on PCI
+	select CRC32
+	select MII
+	help
+	  This driver is for the Sundance "Alta" chip.
+	  More specific information and updates are available from
+	  <http://www.scyld.com/network/sundance.html>.
+
+config SUNDANCE_MMIO
+	bool "Use MMIO instead of PIO"
+	depends on SUNDANCE
+	help
+	  Enable memory-mapped I/O for interaction with Sundance NIC registers.
+	  Do NOT enable this by default, PIO (enabled when MMIO is disabled)
+	  is known to solve bugs on certain chips.
+
+	  If unsure, say N.
+
+endif # NET_VENDOR_DLINK
diff --git a/drivers/net/ethernet/dlink/Makefile b/drivers/net/ethernet/dlink/Makefile
new file mode 100644
index 000000000..3ff503c74
--- /dev/null
+++ b/drivers/net/ethernet/dlink/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Makefile for the D-Link network device drivers.
+#
+
+obj-$(CONFIG_DL2K) += dl2k.o
+obj-$(CONFIG_SUNDANCE) += sundance.o
diff --git a/drivers/net/ethernet/dlink/dl2k.c b/drivers/net/ethernet/dlink/dl2k.c
new file mode 100644
index 000000000..2c67a857a
--- /dev/null
+++ b/drivers/net/ethernet/dlink/dl2k.c
@@ -0,0 +1,1867 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*  D-Link DL2000-based Gigabit Ethernet Adapter Linux driver */
+/*
+    Copyright (c) 2001, 2002 by D-Link Corporation
+    Written by Edward Peng.<edward_peng@dlink.com.tw>
+    Created 03-May-2001, base on Linux' sundance.c.
+
+*/
+
+#include "dl2k.h"
+#include <linux/dma-mapping.h>
+
+#define dw32(reg, val)	iowrite32(val, ioaddr + (reg))
+#define dw16(reg, val)	iowrite16(val, ioaddr + (reg))
+#define dw8(reg, val)	iowrite8(val, ioaddr + (reg))
+#define dr32(reg)	ioread32(ioaddr + (reg))
+#define dr16(reg)	ioread16(ioaddr + (reg))
+#define dr8(reg)	ioread8(ioaddr + (reg))
+
+#define MAX_UNITS 8
+static int mtu[MAX_UNITS];
+static int vlan[MAX_UNITS];
+static int jumbo[MAX_UNITS];
+static char *media[MAX_UNITS];
+static int tx_flow=-1;
+static int rx_flow=-1;
+static int copy_thresh;
+static int rx_coalesce=10;	/* Rx frame count each interrupt */
+static int rx_timeout=200;	/* Rx DMA wait time in 640ns increments */
+static int tx_coalesce=16;	/* HW xmit count each TxDMAComplete */
+
+
+MODULE_AUTHOR ("Edward Peng");
+MODULE_DESCRIPTION ("D-Link DL2000-based Gigabit Ethernet Adapter");
+MODULE_LICENSE("GPL");
+module_param_array(mtu, int, NULL, 0);
+module_param_array(media, charp, NULL, 0);
+module_param_array(vlan, int, NULL, 0);
+module_param_array(jumbo, int, NULL, 0);
+module_param(tx_flow, int, 0);
+module_param(rx_flow, int, 0);
+module_param(copy_thresh, int, 0);
+module_param(rx_coalesce, int, 0);	/* Rx frame count each interrupt */
+module_param(rx_timeout, int, 0);	/* Rx DMA wait time in 64ns increments */
+module_param(tx_coalesce, int, 0); /* HW xmit count each TxDMAComplete */
+
+
+/* Enable the default interrupts */
+#define DEFAULT_INTR (RxDMAComplete | HostError | IntRequested | TxDMAComplete| \
+       UpdateStats | LinkEvent)
+
+static void dl2k_enable_int(struct netdev_private *np)
+{
+	void __iomem *ioaddr = np->ioaddr;
+
+	dw16(IntEnable, DEFAULT_INTR);
+}
+
+static const int max_intrloop = 50;
+static const int multicast_filter_limit = 0x40;
+
+static int rio_open (struct net_device *dev);
+static void rio_timer (struct timer_list *t);
+static void rio_tx_timeout (struct net_device *dev, unsigned int txqueue);
+static netdev_tx_t start_xmit (struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t rio_interrupt (int irq, void *dev_instance);
+static void rio_free_tx (struct net_device *dev, int irq);
+static void tx_error (struct net_device *dev, int tx_status);
+static int receive_packet (struct net_device *dev);
+static void rio_error (struct net_device *dev, int int_status);
+static void set_multicast (struct net_device *dev);
+static struct net_device_stats *get_stats (struct net_device *dev);
+static int clear_stats (struct net_device *dev);
+static int rio_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
+static int rio_close (struct net_device *dev);
+static int find_miiphy (struct net_device *dev);
+static int parse_eeprom (struct net_device *dev);
+static int read_eeprom (struct netdev_private *, int eep_addr);
+static int mii_wait_link (struct net_device *dev, int wait);
+static int mii_set_media (struct net_device *dev);
+static int mii_get_media (struct net_device *dev);
+static int mii_set_media_pcs (struct net_device *dev);
+static int mii_get_media_pcs (struct net_device *dev);
+static int mii_read (struct net_device *dev, int phy_addr, int reg_num);
+static int mii_write (struct net_device *dev, int phy_addr, int reg_num,
+		      u16 data);
+
+static const struct ethtool_ops ethtool_ops;
+
+static const struct net_device_ops netdev_ops = {
+	.ndo_open		= rio_open,
+	.ndo_start_xmit	= start_xmit,
+	.ndo_stop		= rio_close,
+	.ndo_get_stats		= get_stats,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address 	= eth_mac_addr,
+	.ndo_set_rx_mode	= set_multicast,
+	.ndo_eth_ioctl		= rio_ioctl,
+	.ndo_tx_timeout		= rio_tx_timeout,
+};
+
+static int
+rio_probe1 (struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct net_device *dev;
+	struct netdev_private *np;
+	static int card_idx;
+	int chip_idx = ent->driver_data;
+	int err, irq;
+	void __iomem *ioaddr;
+	void *ring_space;
+	dma_addr_t ring_dma;
+
+	err = pci_enable_device (pdev);
+	if (err)
+		return err;
+
+	irq = pdev->irq;
+	err = pci_request_regions (pdev, "dl2k");
+	if (err)
+		goto err_out_disable;
+
+	pci_set_master (pdev);
+
+	err = -ENOMEM;
+
+	dev = alloc_etherdev (sizeof (*np));
+	if (!dev)
+		goto err_out_res;
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+	np = netdev_priv(dev);
+
+	/* IO registers range. */
+	ioaddr = pci_iomap(pdev, 0, 0);
+	if (!ioaddr)
+		goto err_out_dev;
+	np->eeprom_addr = ioaddr;
+
+#ifdef MEM_MAPPING
+	/* MM registers range. */
+	ioaddr = pci_iomap(pdev, 1, 0);
+	if (!ioaddr)
+		goto err_out_iounmap;
+#endif
+	np->ioaddr = ioaddr;
+	np->chip_id = chip_idx;
+	np->pdev = pdev;
+	spin_lock_init (&np->tx_lock);
+	spin_lock_init (&np->rx_lock);
+
+	/* Parse manual configuration */
+	np->an_enable = 1;
+	np->tx_coalesce = 1;
+	if (card_idx < MAX_UNITS) {
+		if (media[card_idx] != NULL) {
+			np->an_enable = 0;
+			if (strcmp (media[card_idx], "auto") == 0 ||
+			    strcmp (media[card_idx], "autosense") == 0 ||
+			    strcmp (media[card_idx], "0") == 0 ) {
+				np->an_enable = 2;
+			} else if (strcmp (media[card_idx], "100mbps_fd") == 0 ||
+			    strcmp (media[card_idx], "4") == 0) {
+				np->speed = 100;
+				np->full_duplex = 1;
+			} else if (strcmp (media[card_idx], "100mbps_hd") == 0 ||
+				   strcmp (media[card_idx], "3") == 0) {
+				np->speed = 100;
+				np->full_duplex = 0;
+			} else if (strcmp (media[card_idx], "10mbps_fd") == 0 ||
+				   strcmp (media[card_idx], "2") == 0) {
+				np->speed = 10;
+				np->full_duplex = 1;
+			} else if (strcmp (media[card_idx], "10mbps_hd") == 0 ||
+				   strcmp (media[card_idx], "1") == 0) {
+				np->speed = 10;
+				np->full_duplex = 0;
+			} else if (strcmp (media[card_idx], "1000mbps_fd") == 0 ||
+				 strcmp (media[card_idx], "6") == 0) {
+				np->speed=1000;
+				np->full_duplex=1;
+			} else if (strcmp (media[card_idx], "1000mbps_hd") == 0 ||
+				 strcmp (media[card_idx], "5") == 0) {
+				np->speed = 1000;
+				np->full_duplex = 0;
+			} else {
+				np->an_enable = 1;
+			}
+		}
+		if (jumbo[card_idx] != 0) {
+			np->jumbo = 1;
+			dev->mtu = MAX_JUMBO;
+		} else {
+			np->jumbo = 0;
+			if (mtu[card_idx] > 0 && mtu[card_idx] < PACKET_SIZE)
+				dev->mtu = mtu[card_idx];
+		}
+		np->vlan = (vlan[card_idx] > 0 && vlan[card_idx] < 4096) ?
+		    vlan[card_idx] : 0;
+		if (rx_coalesce > 0 && rx_timeout > 0) {
+			np->rx_coalesce = rx_coalesce;
+			np->rx_timeout = rx_timeout;
+			np->coalesce = 1;
+		}
+		np->tx_flow = (tx_flow == 0) ? 0 : 1;
+		np->rx_flow = (rx_flow == 0) ? 0 : 1;
+
+		if (tx_coalesce < 1)
+			tx_coalesce = 1;
+		else if (tx_coalesce > TX_RING_SIZE-1)
+			tx_coalesce = TX_RING_SIZE - 1;
+	}
+	dev->netdev_ops = &netdev_ops;
+	dev->watchdog_timeo = TX_TIMEOUT;
+	dev->ethtool_ops = &ethtool_ops;
+#if 0
+	dev->features = NETIF_F_IP_CSUM;
+#endif
+	/* MTU range: 68 - 1536 or 8000 */
+	dev->min_mtu = ETH_MIN_MTU;
+	dev->max_mtu = np->jumbo ? MAX_JUMBO : PACKET_SIZE;
+
+	pci_set_drvdata (pdev, dev);
+
+	ring_space = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE, &ring_dma,
+					GFP_KERNEL);
+	if (!ring_space)
+		goto err_out_iounmap;
+	np->tx_ring = ring_space;
+	np->tx_ring_dma = ring_dma;
+
+	ring_space = dma_alloc_coherent(&pdev->dev, RX_TOTAL_SIZE, &ring_dma,
+					GFP_KERNEL);
+	if (!ring_space)
+		goto err_out_unmap_tx;
+	np->rx_ring = ring_space;
+	np->rx_ring_dma = ring_dma;
+
+	/* Parse eeprom data */
+	parse_eeprom (dev);
+
+	/* Find PHY address */
+	err = find_miiphy (dev);
+	if (err)
+		goto err_out_unmap_rx;
+
+	/* Fiber device? */
+	np->phy_media = (dr16(ASICCtrl) & PhyMedia) ? 1 : 0;
+	np->link_status = 0;
+	/* Set media and reset PHY */
+	if (np->phy_media) {
+		/* default Auto-Negotiation for fiber deivices */
+	 	if (np->an_enable == 2) {
+			np->an_enable = 1;
+		}
+	} else {
+		/* Auto-Negotiation is mandatory for 1000BASE-T,
+		   IEEE 802.3ab Annex 28D page 14 */
+		if (np->speed == 1000)
+			np->an_enable = 1;
+	}
+
+	err = register_netdev (dev);
+	if (err)
+		goto err_out_unmap_rx;
+
+	card_idx++;
+
+	printk (KERN_INFO "%s: %s, %pM, IRQ %d\n",
+		dev->name, np->name, dev->dev_addr, irq);
+	if (tx_coalesce > 1)
+		printk(KERN_INFO "tx_coalesce:\t%d packets\n",
+				tx_coalesce);
+	if (np->coalesce)
+		printk(KERN_INFO
+		       "rx_coalesce:\t%d packets\n"
+		       "rx_timeout: \t%d ns\n",
+				np->rx_coalesce, np->rx_timeout*640);
+	if (np->vlan)
+		printk(KERN_INFO "vlan(id):\t%d\n", np->vlan);
+	return 0;
+
+err_out_unmap_rx:
+	dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, np->rx_ring,
+			  np->rx_ring_dma);
+err_out_unmap_tx:
+	dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, np->tx_ring,
+			  np->tx_ring_dma);
+err_out_iounmap:
+#ifdef MEM_MAPPING
+	pci_iounmap(pdev, np->ioaddr);
+#endif
+	pci_iounmap(pdev, np->eeprom_addr);
+err_out_dev:
+	free_netdev (dev);
+err_out_res:
+	pci_release_regions (pdev);
+err_out_disable:
+	pci_disable_device (pdev);
+	return err;
+}
+
+static int
+find_miiphy (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int i, phy_found = 0;
+
+	np->phy_addr = 1;
+
+	for (i = 31; i >= 0; i--) {
+		int mii_status = mii_read (dev, i, 1);
+		if (mii_status != 0xffff && mii_status != 0x0000) {
+			np->phy_addr = i;
+			phy_found++;
+		}
+	}
+	if (!phy_found) {
+		printk (KERN_ERR "%s: No MII PHY found!\n", dev->name);
+		return -ENODEV;
+	}
+	return 0;
+}
+
+static int
+parse_eeprom (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+	int i, j;
+	u8 sromdata[256];
+	u8 *psib;
+	u32 crc;
+	PSROM_t psrom = (PSROM_t) sromdata;
+
+	int cid, next;
+
+	for (i = 0; i < 128; i++)
+		((__le16 *) sromdata)[i] = cpu_to_le16(read_eeprom(np, i));
+
+	if (np->pdev->vendor == PCI_VENDOR_ID_DLINK) {	/* D-Link Only */
+		/* Check CRC */
+		crc = ~ether_crc_le (256 - 4, sromdata);
+		if (psrom->crc != cpu_to_le32(crc)) {
+			printk (KERN_ERR "%s: EEPROM data CRC error.\n",
+					dev->name);
+			return -1;
+		}
+	}
+
+	/* Set MAC address */
+	eth_hw_addr_set(dev, psrom->mac_addr);
+
+	if (np->chip_id == CHIP_IP1000A) {
+		np->led_mode = psrom->led_mode;
+		return 0;
+	}
+
+	if (np->pdev->vendor != PCI_VENDOR_ID_DLINK) {
+		return 0;
+	}
+
+	/* Parse Software Information Block */
+	i = 0x30;
+	psib = (u8 *) sromdata;
+	do {
+		cid = psib[i++];
+		next = psib[i++];
+		if ((cid == 0 && next == 0) || (cid == 0xff && next == 0xff)) {
+			printk (KERN_ERR "Cell data error\n");
+			return -1;
+		}
+		switch (cid) {
+		case 0:	/* Format version */
+			break;
+		case 1:	/* End of cell */
+			return 0;
+		case 2:	/* Duplex Polarity */
+			np->duplex_polarity = psib[i];
+			dw8(PhyCtrl, dr8(PhyCtrl) | psib[i]);
+			break;
+		case 3:	/* Wake Polarity */
+			np->wake_polarity = psib[i];
+			break;
+		case 9:	/* Adapter description */
+			j = (next - i > 255) ? 255 : next - i;
+			memcpy (np->name, &(psib[i]), j);
+			break;
+		case 4:
+		case 5:
+		case 6:
+		case 7:
+		case 8:	/* Reversed */
+			break;
+		default:	/* Unknown cell */
+			return -1;
+		}
+		i = next;
+	} while (1);
+
+	return 0;
+}
+
+static void rio_set_led_mode(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+	u32 mode;
+
+	if (np->chip_id != CHIP_IP1000A)
+		return;
+
+	mode = dr32(ASICCtrl);
+	mode &= ~(IPG_AC_LED_MODE_BIT_1 | IPG_AC_LED_MODE | IPG_AC_LED_SPEED);
+
+	if (np->led_mode & 0x01)
+		mode |= IPG_AC_LED_MODE;
+	if (np->led_mode & 0x02)
+		mode |= IPG_AC_LED_MODE_BIT_1;
+	if (np->led_mode & 0x08)
+		mode |= IPG_AC_LED_SPEED;
+
+	dw32(ASICCtrl, mode);
+}
+
+static inline dma_addr_t desc_to_dma(struct netdev_desc *desc)
+{
+	return le64_to_cpu(desc->fraginfo) & DMA_BIT_MASK(48);
+}
+
+static void free_list(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	struct sk_buff *skb;
+	int i;
+
+	/* Free all the skbuffs in the queue. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		skb = np->rx_skbuff[i];
+		if (skb) {
+			dma_unmap_single(&np->pdev->dev,
+					 desc_to_dma(&np->rx_ring[i]),
+					 skb->len, DMA_FROM_DEVICE);
+			dev_kfree_skb(skb);
+			np->rx_skbuff[i] = NULL;
+		}
+		np->rx_ring[i].status = 0;
+		np->rx_ring[i].fraginfo = 0;
+	}
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		skb = np->tx_skbuff[i];
+		if (skb) {
+			dma_unmap_single(&np->pdev->dev,
+					 desc_to_dma(&np->tx_ring[i]),
+					 skb->len, DMA_TO_DEVICE);
+			dev_kfree_skb(skb);
+			np->tx_skbuff[i] = NULL;
+		}
+	}
+}
+
+static void rio_reset_ring(struct netdev_private *np)
+{
+	int i;
+
+	np->cur_rx = 0;
+	np->cur_tx = 0;
+	np->old_rx = 0;
+	np->old_tx = 0;
+
+	for (i = 0; i < TX_RING_SIZE; i++)
+		np->tx_ring[i].status = cpu_to_le64(TFDDone);
+
+	for (i = 0; i < RX_RING_SIZE; i++)
+		np->rx_ring[i].status = 0;
+}
+
+ /* allocate and initialize Tx and Rx descriptors */
+static int alloc_list(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int i;
+
+	rio_reset_ring(np);
+	np->rx_buf_sz = (dev->mtu <= 1500 ? PACKET_SIZE : dev->mtu + 32);
+
+	/* Initialize Tx descriptors, TFDListPtr leaves in start_xmit(). */
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		np->tx_skbuff[i] = NULL;
+		np->tx_ring[i].next_desc = cpu_to_le64(np->tx_ring_dma +
+					      ((i + 1) % TX_RING_SIZE) *
+					      sizeof(struct netdev_desc));
+	}
+
+	/* Initialize Rx descriptors & allocate buffers */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		/* Allocated fixed size of skbuff */
+		struct sk_buff *skb;
+
+		skb = netdev_alloc_skb_ip_align(dev, np->rx_buf_sz);
+		np->rx_skbuff[i] = skb;
+		if (!skb) {
+			free_list(dev);
+			return -ENOMEM;
+		}
+
+		np->rx_ring[i].next_desc = cpu_to_le64(np->rx_ring_dma +
+						((i + 1) % RX_RING_SIZE) *
+						sizeof(struct netdev_desc));
+		/* Rubicon now supports 40 bits of addressing space. */
+		np->rx_ring[i].fraginfo =
+		    cpu_to_le64(dma_map_single(&np->pdev->dev, skb->data,
+					       np->rx_buf_sz, DMA_FROM_DEVICE));
+		np->rx_ring[i].fraginfo |= cpu_to_le64((u64)np->rx_buf_sz << 48);
+	}
+
+	return 0;
+}
+
+static void rio_hw_init(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+	int i;
+	u16 macctrl;
+
+	/* Reset all logic functions */
+	dw16(ASICCtrl + 2,
+	     GlobalReset | DMAReset | FIFOReset | NetworkReset | HostReset);
+	mdelay(10);
+
+	rio_set_led_mode(dev);
+
+	/* DebugCtrl bit 4, 5, 9 must set */
+	dw32(DebugCtrl, dr32(DebugCtrl) | 0x0230);
+
+	if (np->chip_id == CHIP_IP1000A &&
+	    (np->pdev->revision == 0x40 || np->pdev->revision == 0x41)) {
+		/* PHY magic taken from ipg driver, undocumented registers */
+		mii_write(dev, np->phy_addr, 31, 0x0001);
+		mii_write(dev, np->phy_addr, 27, 0x01e0);
+		mii_write(dev, np->phy_addr, 31, 0x0002);
+		mii_write(dev, np->phy_addr, 27, 0xeb8e);
+		mii_write(dev, np->phy_addr, 31, 0x0000);
+		mii_write(dev, np->phy_addr, 30, 0x005e);
+		/* advertise 1000BASE-T half & full duplex, prefer MASTER */
+		mii_write(dev, np->phy_addr, MII_CTRL1000, 0x0700);
+	}
+
+	if (np->phy_media)
+		mii_set_media_pcs(dev);
+	else
+		mii_set_media(dev);
+
+	/* Jumbo frame */
+	if (np->jumbo != 0)
+		dw16(MaxFrameSize, MAX_JUMBO+14);
+
+	/* Set RFDListPtr */
+	dw32(RFDListPtr0, np->rx_ring_dma);
+	dw32(RFDListPtr1, 0);
+
+	/* Set station address */
+	/* 16 or 32-bit access is required by TC9020 datasheet but 8-bit works
+	 * too. However, it doesn't work on IP1000A so we use 16-bit access.
+	 */
+	for (i = 0; i < 3; i++)
+		dw16(StationAddr0 + 2 * i,
+		     cpu_to_le16(((const u16 *)dev->dev_addr)[i]));
+
+	set_multicast (dev);
+	if (np->coalesce) {
+		dw32(RxDMAIntCtrl, np->rx_coalesce | np->rx_timeout << 16);
+	}
+	/* Set RIO to poll every N*320nsec. */
+	dw8(RxDMAPollPeriod, 0x20);
+	dw8(TxDMAPollPeriod, 0xff);
+	dw8(RxDMABurstThresh, 0x30);
+	dw8(RxDMAUrgentThresh, 0x30);
+	dw32(RmonStatMask, 0x0007ffff);
+	/* clear statistics */
+	clear_stats (dev);
+
+	/* VLAN supported */
+	if (np->vlan) {
+		/* priority field in RxDMAIntCtrl  */
+		dw32(RxDMAIntCtrl, dr32(RxDMAIntCtrl) | 0x7 << 10);
+		/* VLANId */
+		dw16(VLANId, np->vlan);
+		/* Length/Type should be 0x8100 */
+		dw32(VLANTag, 0x8100 << 16 | np->vlan);
+		/* Enable AutoVLANuntagging, but disable AutoVLANtagging.
+		   VLAN information tagged by TFC' VID, CFI fields. */
+		dw32(MACCtrl, dr32(MACCtrl) | AutoVLANuntagging);
+	}
+
+	/* Start Tx/Rx */
+	dw32(MACCtrl, dr32(MACCtrl) | StatsEnable | RxEnable | TxEnable);
+
+	macctrl = 0;
+	macctrl |= (np->vlan) ? AutoVLANuntagging : 0;
+	macctrl |= (np->full_duplex) ? DuplexSelect : 0;
+	macctrl |= (np->tx_flow) ? TxFlowControlEnable : 0;
+	macctrl |= (np->rx_flow) ? RxFlowControlEnable : 0;
+	dw16(MACCtrl, macctrl);
+}
+
+static void rio_hw_stop(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+
+	/* Disable interrupts */
+	dw16(IntEnable, 0);
+
+	/* Stop Tx and Rx logics */
+	dw32(MACCtrl, TxDisable | RxDisable | StatsDisable);
+}
+
+static int rio_open(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	const int irq = np->pdev->irq;
+	int i;
+
+	i = alloc_list(dev);
+	if (i)
+		return i;
+
+	rio_hw_init(dev);
+
+	i = request_irq(irq, rio_interrupt, IRQF_SHARED, dev->name, dev);
+	if (i) {
+		rio_hw_stop(dev);
+		free_list(dev);
+		return i;
+	}
+
+	timer_setup(&np->timer, rio_timer, 0);
+	np->timer.expires = jiffies + 1 * HZ;
+	add_timer(&np->timer);
+
+	netif_start_queue (dev);
+
+	dl2k_enable_int(np);
+	return 0;
+}
+
+static void
+rio_timer (struct timer_list *t)
+{
+	struct netdev_private *np = from_timer(np, t, timer);
+	struct net_device *dev = pci_get_drvdata(np->pdev);
+	unsigned int entry;
+	int next_tick = 1*HZ;
+	unsigned long flags;
+
+	spin_lock_irqsave(&np->rx_lock, flags);
+	/* Recover rx ring exhausted error */
+	if (np->cur_rx - np->old_rx >= RX_RING_SIZE) {
+		printk(KERN_INFO "Try to recover rx ring exhausted...\n");
+		/* Re-allocate skbuffs to fill the descriptor ring */
+		for (; np->cur_rx - np->old_rx > 0; np->old_rx++) {
+			struct sk_buff *skb;
+			entry = np->old_rx % RX_RING_SIZE;
+			/* Dropped packets don't need to re-allocate */
+			if (np->rx_skbuff[entry] == NULL) {
+				skb = netdev_alloc_skb_ip_align(dev,
+								np->rx_buf_sz);
+				if (skb == NULL) {
+					np->rx_ring[entry].fraginfo = 0;
+					printk (KERN_INFO
+						"%s: Still unable to re-allocate Rx skbuff.#%d\n",
+						dev->name, entry);
+					break;
+				}
+				np->rx_skbuff[entry] = skb;
+				np->rx_ring[entry].fraginfo =
+				    cpu_to_le64 (dma_map_single(&np->pdev->dev, skb->data,
+								np->rx_buf_sz, DMA_FROM_DEVICE));
+			}
+			np->rx_ring[entry].fraginfo |=
+			    cpu_to_le64((u64)np->rx_buf_sz << 48);
+			np->rx_ring[entry].status = 0;
+		} /* end for */
+	} /* end if */
+	spin_unlock_irqrestore (&np->rx_lock, flags);
+	np->timer.expires = jiffies + next_tick;
+	add_timer(&np->timer);
+}
+
+static void
+rio_tx_timeout (struct net_device *dev, unsigned int txqueue)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+
+	printk (KERN_INFO "%s: Tx timed out (%4.4x), is buffer full?\n",
+		dev->name, dr32(TxStatus));
+	rio_free_tx(dev, 0);
+	dev->if_port = 0;
+	netif_trans_update(dev); /* prevent tx timeout */
+}
+
+static netdev_tx_t
+start_xmit (struct sk_buff *skb, struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+	struct netdev_desc *txdesc;
+	unsigned entry;
+	u64 tfc_vlan_tag = 0;
+
+	if (np->link_status == 0) {	/* Link Down */
+		dev_kfree_skb(skb);
+		return NETDEV_TX_OK;
+	}
+	entry = np->cur_tx % TX_RING_SIZE;
+	np->tx_skbuff[entry] = skb;
+	txdesc = &np->tx_ring[entry];
+
+#if 0
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		txdesc->status |=
+		    cpu_to_le64 (TCPChecksumEnable | UDPChecksumEnable |
+				 IPChecksumEnable);
+	}
+#endif
+	if (np->vlan) {
+		tfc_vlan_tag = VLANTagInsert |
+		    ((u64)np->vlan << 32) |
+		    ((u64)skb->priority << 45);
+	}
+	txdesc->fraginfo = cpu_to_le64 (dma_map_single(&np->pdev->dev, skb->data,
+						       skb->len, DMA_TO_DEVICE));
+	txdesc->fraginfo |= cpu_to_le64((u64)skb->len << 48);
+
+	/* DL2K bug: DMA fails to get next descriptor ptr in 10Mbps mode
+	 * Work around: Always use 1 descriptor in 10Mbps mode */
+	if (entry % np->tx_coalesce == 0 || np->speed == 10)
+		txdesc->status = cpu_to_le64 (entry | tfc_vlan_tag |
+					      WordAlignDisable |
+					      TxDMAIndicate |
+					      (1 << FragCountShift));
+	else
+		txdesc->status = cpu_to_le64 (entry | tfc_vlan_tag |
+					      WordAlignDisable |
+					      (1 << FragCountShift));
+
+	/* TxDMAPollNow */
+	dw32(DMACtrl, dr32(DMACtrl) | 0x00001000);
+	/* Schedule ISR */
+	dw32(CountDown, 10000);
+	np->cur_tx = (np->cur_tx + 1) % TX_RING_SIZE;
+	if ((np->cur_tx - np->old_tx + TX_RING_SIZE) % TX_RING_SIZE
+			< TX_QUEUE_LEN - 1 && np->speed != 10) {
+		/* do nothing */
+	} else if (!netif_queue_stopped(dev)) {
+		netif_stop_queue (dev);
+	}
+
+	/* The first TFDListPtr */
+	if (!dr32(TFDListPtr0)) {
+		dw32(TFDListPtr0, np->tx_ring_dma +
+		     entry * sizeof (struct netdev_desc));
+		dw32(TFDListPtr1, 0);
+	}
+
+	return NETDEV_TX_OK;
+}
+
+static irqreturn_t
+rio_interrupt (int irq, void *dev_instance)
+{
+	struct net_device *dev = dev_instance;
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+	unsigned int_status;
+	int cnt = max_intrloop;
+	int handled = 0;
+
+	while (1) {
+		int_status = dr16(IntStatus);
+		dw16(IntStatus, int_status);
+		int_status &= DEFAULT_INTR;
+		if (int_status == 0 || --cnt < 0)
+			break;
+		handled = 1;
+		/* Processing received packets */
+		if (int_status & RxDMAComplete)
+			receive_packet (dev);
+		/* TxDMAComplete interrupt */
+		if ((int_status & (TxDMAComplete|IntRequested))) {
+			int tx_status;
+			tx_status = dr32(TxStatus);
+			if (tx_status & 0x01)
+				tx_error (dev, tx_status);
+			/* Free used tx skbuffs */
+			rio_free_tx (dev, 1);
+		}
+
+		/* Handle uncommon events */
+		if (int_status &
+		    (HostError | LinkEvent | UpdateStats))
+			rio_error (dev, int_status);
+	}
+	if (np->cur_tx != np->old_tx)
+		dw32(CountDown, 100);
+	return IRQ_RETVAL(handled);
+}
+
+static void
+rio_free_tx (struct net_device *dev, int irq)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int entry = np->old_tx % TX_RING_SIZE;
+	int tx_use = 0;
+	unsigned long flag = 0;
+
+	if (irq)
+		spin_lock(&np->tx_lock);
+	else
+		spin_lock_irqsave(&np->tx_lock, flag);
+
+	/* Free used tx skbuffs */
+	while (entry != np->cur_tx) {
+		struct sk_buff *skb;
+
+		if (!(np->tx_ring[entry].status & cpu_to_le64(TFDDone)))
+			break;
+		skb = np->tx_skbuff[entry];
+		dma_unmap_single(&np->pdev->dev,
+				 desc_to_dma(&np->tx_ring[entry]), skb->len,
+				 DMA_TO_DEVICE);
+		if (irq)
+			dev_consume_skb_irq(skb);
+		else
+			dev_kfree_skb(skb);
+
+		np->tx_skbuff[entry] = NULL;
+		entry = (entry + 1) % TX_RING_SIZE;
+		tx_use++;
+	}
+	if (irq)
+		spin_unlock(&np->tx_lock);
+	else
+		spin_unlock_irqrestore(&np->tx_lock, flag);
+	np->old_tx = entry;
+
+	/* If the ring is no longer full, clear tx_full and
+	   call netif_wake_queue() */
+
+	if (netif_queue_stopped(dev) &&
+	    ((np->cur_tx - np->old_tx + TX_RING_SIZE) % TX_RING_SIZE
+	    < TX_QUEUE_LEN - 1 || np->speed == 10)) {
+		netif_wake_queue (dev);
+	}
+}
+
+static void
+tx_error (struct net_device *dev, int tx_status)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+	int frame_id;
+	int i;
+
+	frame_id = (tx_status & 0xffff0000);
+	printk (KERN_ERR "%s: Transmit error, TxStatus %4.4x, FrameId %d.\n",
+		dev->name, tx_status, frame_id);
+	dev->stats.tx_errors++;
+	/* Ttransmit Underrun */
+	if (tx_status & 0x10) {
+		dev->stats.tx_fifo_errors++;
+		dw16(TxStartThresh, dr16(TxStartThresh) + 0x10);
+		/* Transmit Underrun need to set TxReset, DMARest, FIFOReset */
+		dw16(ASICCtrl + 2,
+		     TxReset | DMAReset | FIFOReset | NetworkReset);
+		/* Wait for ResetBusy bit clear */
+		for (i = 50; i > 0; i--) {
+			if (!(dr16(ASICCtrl + 2) & ResetBusy))
+				break;
+			mdelay (1);
+		}
+		rio_set_led_mode(dev);
+		rio_free_tx (dev, 1);
+		/* Reset TFDListPtr */
+		dw32(TFDListPtr0, np->tx_ring_dma +
+		     np->old_tx * sizeof (struct netdev_desc));
+		dw32(TFDListPtr1, 0);
+
+		/* Let TxStartThresh stay default value */
+	}
+	/* Late Collision */
+	if (tx_status & 0x04) {
+		dev->stats.tx_fifo_errors++;
+		/* TxReset and clear FIFO */
+		dw16(ASICCtrl + 2, TxReset | FIFOReset);
+		/* Wait reset done */
+		for (i = 50; i > 0; i--) {
+			if (!(dr16(ASICCtrl + 2) & ResetBusy))
+				break;
+			mdelay (1);
+		}
+		rio_set_led_mode(dev);
+		/* Let TxStartThresh stay default value */
+	}
+	/* Maximum Collisions */
+	if (tx_status & 0x08)
+		dev->stats.collisions++;
+	/* Restart the Tx */
+	dw32(MACCtrl, dr16(MACCtrl) | TxEnable);
+}
+
+static int
+receive_packet (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int entry = np->cur_rx % RX_RING_SIZE;
+	int cnt = 30;
+
+	/* If RFDDone, FrameStart and FrameEnd set, there is a new packet in. */
+	while (1) {
+		struct netdev_desc *desc = &np->rx_ring[entry];
+		int pkt_len;
+		u64 frame_status;
+
+		if (!(desc->status & cpu_to_le64(RFDDone)) ||
+		    !(desc->status & cpu_to_le64(FrameStart)) ||
+		    !(desc->status & cpu_to_le64(FrameEnd)))
+			break;
+
+		/* Chip omits the CRC. */
+		frame_status = le64_to_cpu(desc->status);
+		pkt_len = frame_status & 0xffff;
+		if (--cnt < 0)
+			break;
+		/* Update rx error statistics, drop packet. */
+		if (frame_status & RFS_Errors) {
+			dev->stats.rx_errors++;
+			if (frame_status & (RxRuntFrame | RxLengthError))
+				dev->stats.rx_length_errors++;
+			if (frame_status & RxFCSError)
+				dev->stats.rx_crc_errors++;
+			if (frame_status & RxAlignmentError && np->speed != 1000)
+				dev->stats.rx_frame_errors++;
+			if (frame_status & RxFIFOOverrun)
+				dev->stats.rx_fifo_errors++;
+		} else {
+			struct sk_buff *skb;
+
+			/* Small skbuffs for short packets */
+			if (pkt_len > copy_thresh) {
+				dma_unmap_single(&np->pdev->dev,
+						 desc_to_dma(desc),
+						 np->rx_buf_sz,
+						 DMA_FROM_DEVICE);
+				skb_put (skb = np->rx_skbuff[entry], pkt_len);
+				np->rx_skbuff[entry] = NULL;
+			} else if ((skb = netdev_alloc_skb_ip_align(dev, pkt_len))) {
+				dma_sync_single_for_cpu(&np->pdev->dev,
+							desc_to_dma(desc),
+							np->rx_buf_sz,
+							DMA_FROM_DEVICE);
+				skb_copy_to_linear_data (skb,
+						  np->rx_skbuff[entry]->data,
+						  pkt_len);
+				skb_put (skb, pkt_len);
+				dma_sync_single_for_device(&np->pdev->dev,
+							   desc_to_dma(desc),
+							   np->rx_buf_sz,
+							   DMA_FROM_DEVICE);
+			}
+			skb->protocol = eth_type_trans (skb, dev);
+#if 0
+			/* Checksum done by hw, but csum value unavailable. */
+			if (np->pdev->pci_rev_id >= 0x0c &&
+				!(frame_status & (TCPError | UDPError | IPError))) {
+				skb->ip_summed = CHECKSUM_UNNECESSARY;
+			}
+#endif
+			netif_rx (skb);
+		}
+		entry = (entry + 1) % RX_RING_SIZE;
+	}
+	spin_lock(&np->rx_lock);
+	np->cur_rx = entry;
+	/* Re-allocate skbuffs to fill the descriptor ring */
+	entry = np->old_rx;
+	while (entry != np->cur_rx) {
+		struct sk_buff *skb;
+		/* Dropped packets don't need to re-allocate */
+		if (np->rx_skbuff[entry] == NULL) {
+			skb = netdev_alloc_skb_ip_align(dev, np->rx_buf_sz);
+			if (skb == NULL) {
+				np->rx_ring[entry].fraginfo = 0;
+				printk (KERN_INFO
+					"%s: receive_packet: "
+					"Unable to re-allocate Rx skbuff.#%d\n",
+					dev->name, entry);
+				break;
+			}
+			np->rx_skbuff[entry] = skb;
+			np->rx_ring[entry].fraginfo =
+			    cpu_to_le64(dma_map_single(&np->pdev->dev, skb->data,
+						       np->rx_buf_sz, DMA_FROM_DEVICE));
+		}
+		np->rx_ring[entry].fraginfo |=
+		    cpu_to_le64((u64)np->rx_buf_sz << 48);
+		np->rx_ring[entry].status = 0;
+		entry = (entry + 1) % RX_RING_SIZE;
+	}
+	np->old_rx = entry;
+	spin_unlock(&np->rx_lock);
+	return 0;
+}
+
+static void
+rio_error (struct net_device *dev, int int_status)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+	u16 macctrl;
+
+	/* Link change event */
+	if (int_status & LinkEvent) {
+		if (mii_wait_link (dev, 10) == 0) {
+			printk (KERN_INFO "%s: Link up\n", dev->name);
+			if (np->phy_media)
+				mii_get_media_pcs (dev);
+			else
+				mii_get_media (dev);
+			if (np->speed == 1000)
+				np->tx_coalesce = tx_coalesce;
+			else
+				np->tx_coalesce = 1;
+			macctrl = 0;
+			macctrl |= (np->vlan) ? AutoVLANuntagging : 0;
+			macctrl |= (np->full_duplex) ? DuplexSelect : 0;
+			macctrl |= (np->tx_flow) ?
+				TxFlowControlEnable : 0;
+			macctrl |= (np->rx_flow) ?
+				RxFlowControlEnable : 0;
+			dw16(MACCtrl, macctrl);
+			np->link_status = 1;
+			netif_carrier_on(dev);
+		} else {
+			printk (KERN_INFO "%s: Link off\n", dev->name);
+			np->link_status = 0;
+			netif_carrier_off(dev);
+		}
+	}
+
+	/* UpdateStats statistics registers */
+	if (int_status & UpdateStats) {
+		get_stats (dev);
+	}
+
+	/* PCI Error, a catastronphic error related to the bus interface
+	   occurs, set GlobalReset and HostReset to reset. */
+	if (int_status & HostError) {
+		printk (KERN_ERR "%s: HostError! IntStatus %4.4x.\n",
+			dev->name, int_status);
+		dw16(ASICCtrl + 2, GlobalReset | HostReset);
+		mdelay (500);
+		rio_set_led_mode(dev);
+	}
+}
+
+static struct net_device_stats *
+get_stats (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+#ifdef MEM_MAPPING
+	int i;
+#endif
+	unsigned int stat_reg;
+
+	/* All statistics registers need to be acknowledged,
+	   else statistic overflow could cause problems */
+
+	dev->stats.rx_packets += dr32(FramesRcvOk);
+	dev->stats.tx_packets += dr32(FramesXmtOk);
+	dev->stats.rx_bytes += dr32(OctetRcvOk);
+	dev->stats.tx_bytes += dr32(OctetXmtOk);
+
+	dev->stats.multicast = dr32(McstFramesRcvdOk);
+	dev->stats.collisions += dr32(SingleColFrames)
+			     +  dr32(MultiColFrames);
+
+	/* detailed tx errors */
+	stat_reg = dr16(FramesAbortXSColls);
+	dev->stats.tx_aborted_errors += stat_reg;
+	dev->stats.tx_errors += stat_reg;
+
+	stat_reg = dr16(CarrierSenseErrors);
+	dev->stats.tx_carrier_errors += stat_reg;
+	dev->stats.tx_errors += stat_reg;
+
+	/* Clear all other statistic register. */
+	dr32(McstOctetXmtOk);
+	dr16(BcstFramesXmtdOk);
+	dr32(McstFramesXmtdOk);
+	dr16(BcstFramesRcvdOk);
+	dr16(MacControlFramesRcvd);
+	dr16(FrameTooLongErrors);
+	dr16(InRangeLengthErrors);
+	dr16(FramesCheckSeqErrors);
+	dr16(FramesLostRxErrors);
+	dr32(McstOctetXmtOk);
+	dr32(BcstOctetXmtOk);
+	dr32(McstFramesXmtdOk);
+	dr32(FramesWDeferredXmt);
+	dr32(LateCollisions);
+	dr16(BcstFramesXmtdOk);
+	dr16(MacControlFramesXmtd);
+	dr16(FramesWEXDeferal);
+
+#ifdef MEM_MAPPING
+	for (i = 0x100; i <= 0x150; i += 4)
+		dr32(i);
+#endif
+	dr16(TxJumboFrames);
+	dr16(RxJumboFrames);
+	dr16(TCPCheckSumErrors);
+	dr16(UDPCheckSumErrors);
+	dr16(IPCheckSumErrors);
+	return &dev->stats;
+}
+
+static int
+clear_stats (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+#ifdef MEM_MAPPING
+	int i;
+#endif
+
+	/* All statistics registers need to be acknowledged,
+	   else statistic overflow could cause problems */
+	dr32(FramesRcvOk);
+	dr32(FramesXmtOk);
+	dr32(OctetRcvOk);
+	dr32(OctetXmtOk);
+
+	dr32(McstFramesRcvdOk);
+	dr32(SingleColFrames);
+	dr32(MultiColFrames);
+	dr32(LateCollisions);
+	/* detailed rx errors */
+	dr16(FrameTooLongErrors);
+	dr16(InRangeLengthErrors);
+	dr16(FramesCheckSeqErrors);
+	dr16(FramesLostRxErrors);
+
+	/* detailed tx errors */
+	dr16(FramesAbortXSColls);
+	dr16(CarrierSenseErrors);
+
+	/* Clear all other statistic register. */
+	dr32(McstOctetXmtOk);
+	dr16(BcstFramesXmtdOk);
+	dr32(McstFramesXmtdOk);
+	dr16(BcstFramesRcvdOk);
+	dr16(MacControlFramesRcvd);
+	dr32(McstOctetXmtOk);
+	dr32(BcstOctetXmtOk);
+	dr32(McstFramesXmtdOk);
+	dr32(FramesWDeferredXmt);
+	dr16(BcstFramesXmtdOk);
+	dr16(MacControlFramesXmtd);
+	dr16(FramesWEXDeferal);
+#ifdef MEM_MAPPING
+	for (i = 0x100; i <= 0x150; i += 4)
+		dr32(i);
+#endif
+	dr16(TxJumboFrames);
+	dr16(RxJumboFrames);
+	dr16(TCPCheckSumErrors);
+	dr16(UDPCheckSumErrors);
+	dr16(IPCheckSumErrors);
+	return 0;
+}
+
+static void
+set_multicast (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+	u32 hash_table[2];
+	u16 rx_mode = 0;
+
+	hash_table[0] = hash_table[1] = 0;
+	/* RxFlowcontrol DA: 01-80-C2-00-00-01. Hash index=0x39 */
+	hash_table[1] |= 0x02000000;
+	if (dev->flags & IFF_PROMISC) {
+		/* Receive all frames promiscuously. */
+		rx_mode = ReceiveAllFrames;
+	} else if ((dev->flags & IFF_ALLMULTI) ||
+			(netdev_mc_count(dev) > multicast_filter_limit)) {
+		/* Receive broadcast and multicast frames */
+		rx_mode = ReceiveBroadcast | ReceiveMulticast | ReceiveUnicast;
+	} else if (!netdev_mc_empty(dev)) {
+		struct netdev_hw_addr *ha;
+		/* Receive broadcast frames and multicast frames filtering
+		   by Hashtable */
+		rx_mode =
+		    ReceiveBroadcast | ReceiveMulticastHash | ReceiveUnicast;
+		netdev_for_each_mc_addr(ha, dev) {
+			int bit, index = 0;
+			int crc = ether_crc_le(ETH_ALEN, ha->addr);
+			/* The inverted high significant 6 bits of CRC are
+			   used as an index to hashtable */
+			for (bit = 0; bit < 6; bit++)
+				if (crc & (1 << (31 - bit)))
+					index |= (1 << bit);
+			hash_table[index / 32] |= (1 << (index % 32));
+		}
+	} else {
+		rx_mode = ReceiveBroadcast | ReceiveUnicast;
+	}
+	if (np->vlan) {
+		/* ReceiveVLANMatch field in ReceiveMode */
+		rx_mode |= ReceiveVLANMatch;
+	}
+
+	dw32(HashTable0, hash_table[0]);
+	dw32(HashTable1, hash_table[1]);
+	dw16(ReceiveMode, rx_mode);
+}
+
+static void rio_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	struct netdev_private *np = netdev_priv(dev);
+
+	strscpy(info->driver, "dl2k", sizeof(info->driver));
+	strscpy(info->bus_info, pci_name(np->pdev), sizeof(info->bus_info));
+}
+
+static int rio_get_link_ksettings(struct net_device *dev,
+				  struct ethtool_link_ksettings *cmd)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	u32 supported, advertising;
+
+	if (np->phy_media) {
+		/* fiber device */
+		supported = SUPPORTED_Autoneg | SUPPORTED_FIBRE;
+		advertising = ADVERTISED_Autoneg | ADVERTISED_FIBRE;
+		cmd->base.port = PORT_FIBRE;
+	} else {
+		/* copper device */
+		supported = SUPPORTED_10baseT_Half |
+			SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half
+			| SUPPORTED_100baseT_Full | SUPPORTED_1000baseT_Full |
+			SUPPORTED_Autoneg | SUPPORTED_MII;
+		advertising = ADVERTISED_10baseT_Half |
+			ADVERTISED_10baseT_Full | ADVERTISED_100baseT_Half |
+			ADVERTISED_100baseT_Full | ADVERTISED_1000baseT_Full |
+			ADVERTISED_Autoneg | ADVERTISED_MII;
+		cmd->base.port = PORT_MII;
+	}
+	if (np->link_status) {
+		cmd->base.speed = np->speed;
+		cmd->base.duplex = np->full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
+	} else {
+		cmd->base.speed = SPEED_UNKNOWN;
+		cmd->base.duplex = DUPLEX_UNKNOWN;
+	}
+	if (np->an_enable)
+		cmd->base.autoneg = AUTONEG_ENABLE;
+	else
+		cmd->base.autoneg = AUTONEG_DISABLE;
+
+	cmd->base.phy_address = np->phy_addr;
+
+	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 rio_set_link_ksettings(struct net_device *dev,
+				  const struct ethtool_link_ksettings *cmd)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	u32 speed = cmd->base.speed;
+	u8 duplex = cmd->base.duplex;
+
+	netif_carrier_off(dev);
+	if (cmd->base.autoneg == AUTONEG_ENABLE) {
+		if (np->an_enable) {
+			return 0;
+		} else {
+			np->an_enable = 1;
+			mii_set_media(dev);
+			return 0;
+		}
+	} else {
+		np->an_enable = 0;
+		if (np->speed == 1000) {
+			speed = SPEED_100;
+			duplex = DUPLEX_FULL;
+			printk("Warning!! Can't disable Auto negotiation in 1000Mbps, change to Manual 100Mbps, Full duplex.\n");
+		}
+		switch (speed) {
+		case SPEED_10:
+			np->speed = 10;
+			np->full_duplex = (duplex == DUPLEX_FULL);
+			break;
+		case SPEED_100:
+			np->speed = 100;
+			np->full_duplex = (duplex == DUPLEX_FULL);
+			break;
+		case SPEED_1000: /* not supported */
+		default:
+			return -EINVAL;
+		}
+		mii_set_media(dev);
+	}
+	return 0;
+}
+
+static u32 rio_get_link(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	return np->link_status;
+}
+
+static const struct ethtool_ops ethtool_ops = {
+	.get_drvinfo = rio_get_drvinfo,
+	.get_link = rio_get_link,
+	.get_link_ksettings = rio_get_link_ksettings,
+	.set_link_ksettings = rio_set_link_ksettings,
+};
+
+static int
+rio_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
+{
+	int phy_addr;
+	struct netdev_private *np = netdev_priv(dev);
+	struct mii_ioctl_data *miidata = if_mii(rq);
+
+	phy_addr = np->phy_addr;
+	switch (cmd) {
+	case SIOCGMIIPHY:
+		miidata->phy_id = phy_addr;
+		break;
+	case SIOCGMIIREG:
+		miidata->val_out = mii_read (dev, phy_addr, miidata->reg_num);
+		break;
+	case SIOCSMIIREG:
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+		mii_write (dev, phy_addr, miidata->reg_num, miidata->val_in);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+	return 0;
+}
+
+#define EEP_READ 0x0200
+#define EEP_BUSY 0x8000
+/* Read the EEPROM word */
+/* We use I/O instruction to read/write eeprom to avoid fail on some machines */
+static int read_eeprom(struct netdev_private *np, int eep_addr)
+{
+	void __iomem *ioaddr = np->eeprom_addr;
+	int i = 1000;
+
+	dw16(EepromCtrl, EEP_READ | (eep_addr & 0xff));
+	while (i-- > 0) {
+		if (!(dr16(EepromCtrl) & EEP_BUSY))
+			return dr16(EepromData);
+	}
+	return 0;
+}
+
+enum phy_ctrl_bits {
+	MII_READ = 0x00, MII_CLK = 0x01, MII_DATA1 = 0x02, MII_WRITE = 0x04,
+	MII_DUPLEX = 0x08,
+};
+
+#define mii_delay() dr8(PhyCtrl)
+static void
+mii_sendbit (struct net_device *dev, u32 data)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+
+	data = ((data) ? MII_DATA1 : 0) | (dr8(PhyCtrl) & 0xf8) | MII_WRITE;
+	dw8(PhyCtrl, data);
+	mii_delay ();
+	dw8(PhyCtrl, data | MII_CLK);
+	mii_delay ();
+}
+
+static int
+mii_getbit (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->ioaddr;
+	u8 data;
+
+	data = (dr8(PhyCtrl) & 0xf8) | MII_READ;
+	dw8(PhyCtrl, data);
+	mii_delay ();
+	dw8(PhyCtrl, data | MII_CLK);
+	mii_delay ();
+	return (dr8(PhyCtrl) >> 1) & 1;
+}
+
+static void
+mii_send_bits (struct net_device *dev, u32 data, int len)
+{
+	int i;
+
+	for (i = len - 1; i >= 0; i--) {
+		mii_sendbit (dev, data & (1 << i));
+	}
+}
+
+static int
+mii_read (struct net_device *dev, int phy_addr, int reg_num)
+{
+	u32 cmd;
+	int i;
+	u32 retval = 0;
+
+	/* Preamble */
+	mii_send_bits (dev, 0xffffffff, 32);
+	/* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */
+	/* ST,OP = 0110'b for read operation */
+	cmd = (0x06 << 10 | phy_addr << 5 | reg_num);
+	mii_send_bits (dev, cmd, 14);
+	/* Turnaround */
+	if (mii_getbit (dev))
+		goto err_out;
+	/* Read data */
+	for (i = 0; i < 16; i++) {
+		retval |= mii_getbit (dev);
+		retval <<= 1;
+	}
+	/* End cycle */
+	mii_getbit (dev);
+	return (retval >> 1) & 0xffff;
+
+      err_out:
+	return 0;
+}
+static int
+mii_write (struct net_device *dev, int phy_addr, int reg_num, u16 data)
+{
+	u32 cmd;
+
+	/* Preamble */
+	mii_send_bits (dev, 0xffffffff, 32);
+	/* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */
+	/* ST,OP,AAAAA,RRRRR,TA = 0101xxxxxxxxxx10'b = 0x5002 for write */
+	cmd = (0x5002 << 16) | (phy_addr << 23) | (reg_num << 18) | data;
+	mii_send_bits (dev, cmd, 32);
+	/* End cycle */
+	mii_getbit (dev);
+	return 0;
+}
+static int
+mii_wait_link (struct net_device *dev, int wait)
+{
+	__u16 bmsr;
+	int phy_addr;
+	struct netdev_private *np;
+
+	np = netdev_priv(dev);
+	phy_addr = np->phy_addr;
+
+	do {
+		bmsr = mii_read (dev, phy_addr, MII_BMSR);
+		if (bmsr & BMSR_LSTATUS)
+			return 0;
+		mdelay (1);
+	} while (--wait > 0);
+	return -1;
+}
+static int
+mii_get_media (struct net_device *dev)
+{
+	__u16 negotiate;
+	__u16 bmsr;
+	__u16 mscr;
+	__u16 mssr;
+	int phy_addr;
+	struct netdev_private *np;
+
+	np = netdev_priv(dev);
+	phy_addr = np->phy_addr;
+
+	bmsr = mii_read (dev, phy_addr, MII_BMSR);
+	if (np->an_enable) {
+		if (!(bmsr & BMSR_ANEGCOMPLETE)) {
+			/* Auto-Negotiation not completed */
+			return -1;
+		}
+		negotiate = mii_read (dev, phy_addr, MII_ADVERTISE) &
+			mii_read (dev, phy_addr, MII_LPA);
+		mscr = mii_read (dev, phy_addr, MII_CTRL1000);
+		mssr = mii_read (dev, phy_addr, MII_STAT1000);
+		if (mscr & ADVERTISE_1000FULL && mssr & LPA_1000FULL) {
+			np->speed = 1000;
+			np->full_duplex = 1;
+			printk (KERN_INFO "Auto 1000 Mbps, Full duplex\n");
+		} else if (mscr & ADVERTISE_1000HALF && mssr & LPA_1000HALF) {
+			np->speed = 1000;
+			np->full_duplex = 0;
+			printk (KERN_INFO "Auto 1000 Mbps, Half duplex\n");
+		} else if (negotiate & ADVERTISE_100FULL) {
+			np->speed = 100;
+			np->full_duplex = 1;
+			printk (KERN_INFO "Auto 100 Mbps, Full duplex\n");
+		} else if (negotiate & ADVERTISE_100HALF) {
+			np->speed = 100;
+			np->full_duplex = 0;
+			printk (KERN_INFO "Auto 100 Mbps, Half duplex\n");
+		} else if (negotiate & ADVERTISE_10FULL) {
+			np->speed = 10;
+			np->full_duplex = 1;
+			printk (KERN_INFO "Auto 10 Mbps, Full duplex\n");
+		} else if (negotiate & ADVERTISE_10HALF) {
+			np->speed = 10;
+			np->full_duplex = 0;
+			printk (KERN_INFO "Auto 10 Mbps, Half duplex\n");
+		}
+		if (negotiate & ADVERTISE_PAUSE_CAP) {
+			np->tx_flow &= 1;
+			np->rx_flow &= 1;
+		} else if (negotiate & ADVERTISE_PAUSE_ASYM) {
+			np->tx_flow = 0;
+			np->rx_flow &= 1;
+		}
+		/* else tx_flow, rx_flow = user select  */
+	} else {
+		__u16 bmcr = mii_read (dev, phy_addr, MII_BMCR);
+		switch (bmcr & (BMCR_SPEED100 | BMCR_SPEED1000)) {
+		case BMCR_SPEED1000:
+			printk (KERN_INFO "Operating at 1000 Mbps, ");
+			break;
+		case BMCR_SPEED100:
+			printk (KERN_INFO "Operating at 100 Mbps, ");
+			break;
+		case 0:
+			printk (KERN_INFO "Operating at 10 Mbps, ");
+		}
+		if (bmcr & BMCR_FULLDPLX) {
+			printk (KERN_CONT "Full duplex\n");
+		} else {
+			printk (KERN_CONT "Half duplex\n");
+		}
+	}
+	if (np->tx_flow)
+		printk(KERN_INFO "Enable Tx Flow Control\n");
+	else
+		printk(KERN_INFO "Disable Tx Flow Control\n");
+	if (np->rx_flow)
+		printk(KERN_INFO "Enable Rx Flow Control\n");
+	else
+		printk(KERN_INFO "Disable Rx Flow Control\n");
+
+	return 0;
+}
+
+static int
+mii_set_media (struct net_device *dev)
+{
+	__u16 pscr;
+	__u16 bmcr;
+	__u16 bmsr;
+	__u16 anar;
+	int phy_addr;
+	struct netdev_private *np;
+	np = netdev_priv(dev);
+	phy_addr = np->phy_addr;
+
+	/* Does user set speed? */
+	if (np->an_enable) {
+		/* Advertise capabilities */
+		bmsr = mii_read (dev, phy_addr, MII_BMSR);
+		anar = mii_read (dev, phy_addr, MII_ADVERTISE) &
+			~(ADVERTISE_100FULL | ADVERTISE_10FULL |
+			  ADVERTISE_100HALF | ADVERTISE_10HALF |
+			  ADVERTISE_100BASE4);
+		if (bmsr & BMSR_100FULL)
+			anar |= ADVERTISE_100FULL;
+		if (bmsr & BMSR_100HALF)
+			anar |= ADVERTISE_100HALF;
+		if (bmsr & BMSR_100BASE4)
+			anar |= ADVERTISE_100BASE4;
+		if (bmsr & BMSR_10FULL)
+			anar |= ADVERTISE_10FULL;
+		if (bmsr & BMSR_10HALF)
+			anar |= ADVERTISE_10HALF;
+		anar |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
+		mii_write (dev, phy_addr, MII_ADVERTISE, anar);
+
+		/* Enable Auto crossover */
+		pscr = mii_read (dev, phy_addr, MII_PHY_SCR);
+		pscr |= 3 << 5;	/* 11'b */
+		mii_write (dev, phy_addr, MII_PHY_SCR, pscr);
+
+		/* Soft reset PHY */
+		mii_write (dev, phy_addr, MII_BMCR, BMCR_RESET);
+		bmcr = BMCR_ANENABLE | BMCR_ANRESTART | BMCR_RESET;
+		mii_write (dev, phy_addr, MII_BMCR, bmcr);
+		mdelay(1);
+	} else {
+		/* Force speed setting */
+		/* 1) Disable Auto crossover */
+		pscr = mii_read (dev, phy_addr, MII_PHY_SCR);
+		pscr &= ~(3 << 5);
+		mii_write (dev, phy_addr, MII_PHY_SCR, pscr);
+
+		/* 2) PHY Reset */
+		bmcr = mii_read (dev, phy_addr, MII_BMCR);
+		bmcr |= BMCR_RESET;
+		mii_write (dev, phy_addr, MII_BMCR, bmcr);
+
+		/* 3) Power Down */
+		bmcr = 0x1940;	/* must be 0x1940 */
+		mii_write (dev, phy_addr, MII_BMCR, bmcr);
+		mdelay (100);	/* wait a certain time */
+
+		/* 4) Advertise nothing */
+		mii_write (dev, phy_addr, MII_ADVERTISE, 0);
+
+		/* 5) Set media and Power Up */
+		bmcr = BMCR_PDOWN;
+		if (np->speed == 100) {
+			bmcr |= BMCR_SPEED100;
+			printk (KERN_INFO "Manual 100 Mbps, ");
+		} else if (np->speed == 10) {
+			printk (KERN_INFO "Manual 10 Mbps, ");
+		}
+		if (np->full_duplex) {
+			bmcr |= BMCR_FULLDPLX;
+			printk (KERN_CONT "Full duplex\n");
+		} else {
+			printk (KERN_CONT "Half duplex\n");
+		}
+#if 0
+		/* Set 1000BaseT Master/Slave setting */
+		mscr = mii_read (dev, phy_addr, MII_CTRL1000);
+		mscr |= MII_MSCR_CFG_ENABLE;
+		mscr &= ~MII_MSCR_CFG_VALUE = 0;
+#endif
+		mii_write (dev, phy_addr, MII_BMCR, bmcr);
+		mdelay(10);
+	}
+	return 0;
+}
+
+static int
+mii_get_media_pcs (struct net_device *dev)
+{
+	__u16 negotiate;
+	__u16 bmsr;
+	int phy_addr;
+	struct netdev_private *np;
+
+	np = netdev_priv(dev);
+	phy_addr = np->phy_addr;
+
+	bmsr = mii_read (dev, phy_addr, PCS_BMSR);
+	if (np->an_enable) {
+		if (!(bmsr & BMSR_ANEGCOMPLETE)) {
+			/* Auto-Negotiation not completed */
+			return -1;
+		}
+		negotiate = mii_read (dev, phy_addr, PCS_ANAR) &
+			mii_read (dev, phy_addr, PCS_ANLPAR);
+		np->speed = 1000;
+		if (negotiate & PCS_ANAR_FULL_DUPLEX) {
+			printk (KERN_INFO "Auto 1000 Mbps, Full duplex\n");
+			np->full_duplex = 1;
+		} else {
+			printk (KERN_INFO "Auto 1000 Mbps, half duplex\n");
+			np->full_duplex = 0;
+		}
+		if (negotiate & PCS_ANAR_PAUSE) {
+			np->tx_flow &= 1;
+			np->rx_flow &= 1;
+		} else if (negotiate & PCS_ANAR_ASYMMETRIC) {
+			np->tx_flow = 0;
+			np->rx_flow &= 1;
+		}
+		/* else tx_flow, rx_flow = user select  */
+	} else {
+		__u16 bmcr = mii_read (dev, phy_addr, PCS_BMCR);
+		printk (KERN_INFO "Operating at 1000 Mbps, ");
+		if (bmcr & BMCR_FULLDPLX) {
+			printk (KERN_CONT "Full duplex\n");
+		} else {
+			printk (KERN_CONT "Half duplex\n");
+		}
+	}
+	if (np->tx_flow)
+		printk(KERN_INFO "Enable Tx Flow Control\n");
+	else
+		printk(KERN_INFO "Disable Tx Flow Control\n");
+	if (np->rx_flow)
+		printk(KERN_INFO "Enable Rx Flow Control\n");
+	else
+		printk(KERN_INFO "Disable Rx Flow Control\n");
+
+	return 0;
+}
+
+static int
+mii_set_media_pcs (struct net_device *dev)
+{
+	__u16 bmcr;
+	__u16 esr;
+	__u16 anar;
+	int phy_addr;
+	struct netdev_private *np;
+	np = netdev_priv(dev);
+	phy_addr = np->phy_addr;
+
+	/* Auto-Negotiation? */
+	if (np->an_enable) {
+		/* Advertise capabilities */
+		esr = mii_read (dev, phy_addr, PCS_ESR);
+		anar = mii_read (dev, phy_addr, MII_ADVERTISE) &
+			~PCS_ANAR_HALF_DUPLEX &
+			~PCS_ANAR_FULL_DUPLEX;
+		if (esr & (MII_ESR_1000BT_HD | MII_ESR_1000BX_HD))
+			anar |= PCS_ANAR_HALF_DUPLEX;
+		if (esr & (MII_ESR_1000BT_FD | MII_ESR_1000BX_FD))
+			anar |= PCS_ANAR_FULL_DUPLEX;
+		anar |= PCS_ANAR_PAUSE | PCS_ANAR_ASYMMETRIC;
+		mii_write (dev, phy_addr, MII_ADVERTISE, anar);
+
+		/* Soft reset PHY */
+		mii_write (dev, phy_addr, MII_BMCR, BMCR_RESET);
+		bmcr = BMCR_ANENABLE | BMCR_ANRESTART | BMCR_RESET;
+		mii_write (dev, phy_addr, MII_BMCR, bmcr);
+		mdelay(1);
+	} else {
+		/* Force speed setting */
+		/* PHY Reset */
+		bmcr = BMCR_RESET;
+		mii_write (dev, phy_addr, MII_BMCR, bmcr);
+		mdelay(10);
+		if (np->full_duplex) {
+			bmcr = BMCR_FULLDPLX;
+			printk (KERN_INFO "Manual full duplex\n");
+		} else {
+			bmcr = 0;
+			printk (KERN_INFO "Manual half duplex\n");
+		}
+		mii_write (dev, phy_addr, MII_BMCR, bmcr);
+		mdelay(10);
+
+		/*  Advertise nothing */
+		mii_write (dev, phy_addr, MII_ADVERTISE, 0);
+	}
+	return 0;
+}
+
+
+static int
+rio_close (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	struct pci_dev *pdev = np->pdev;
+
+	netif_stop_queue (dev);
+
+	rio_hw_stop(dev);
+
+	free_irq(pdev->irq, dev);
+	del_timer_sync (&np->timer);
+
+	free_list(dev);
+
+	return 0;
+}
+
+static void
+rio_remove1 (struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata (pdev);
+
+	if (dev) {
+		struct netdev_private *np = netdev_priv(dev);
+
+		unregister_netdev (dev);
+		dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, np->rx_ring,
+				  np->rx_ring_dma);
+		dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, np->tx_ring,
+				  np->tx_ring_dma);
+#ifdef MEM_MAPPING
+		pci_iounmap(pdev, np->ioaddr);
+#endif
+		pci_iounmap(pdev, np->eeprom_addr);
+		free_netdev (dev);
+		pci_release_regions (pdev);
+		pci_disable_device (pdev);
+	}
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int rio_suspend(struct device *device)
+{
+	struct net_device *dev = dev_get_drvdata(device);
+	struct netdev_private *np = netdev_priv(dev);
+
+	if (!netif_running(dev))
+		return 0;
+
+	netif_device_detach(dev);
+	del_timer_sync(&np->timer);
+	rio_hw_stop(dev);
+
+	return 0;
+}
+
+static int rio_resume(struct device *device)
+{
+	struct net_device *dev = dev_get_drvdata(device);
+	struct netdev_private *np = netdev_priv(dev);
+
+	if (!netif_running(dev))
+		return 0;
+
+	rio_reset_ring(np);
+	rio_hw_init(dev);
+	np->timer.expires = jiffies + 1 * HZ;
+	add_timer(&np->timer);
+	netif_device_attach(dev);
+	dl2k_enable_int(np);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(rio_pm_ops, rio_suspend, rio_resume);
+#define RIO_PM_OPS    (&rio_pm_ops)
+
+#else
+
+#define RIO_PM_OPS	NULL
+
+#endif /* CONFIG_PM_SLEEP */
+
+static struct pci_driver rio_driver = {
+	.name		= "dl2k",
+	.id_table	= rio_pci_tbl,
+	.probe		= rio_probe1,
+	.remove		= rio_remove1,
+	.driver.pm	= RIO_PM_OPS,
+};
+
+module_pci_driver(rio_driver);
+
+/* Read Documentation/networking/device_drivers/ethernet/dlink/dl2k.rst. */
diff --git a/drivers/net/ethernet/dlink/dl2k.h b/drivers/net/ethernet/dlink/dl2k.h
new file mode 100644
index 000000000..195dc6cfd
--- /dev/null
+++ b/drivers/net/ethernet/dlink/dl2k.h
@@ -0,0 +1,434 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*  D-Link DL2000-based Gigabit Ethernet Adapter Linux driver */
+/*
+    Copyright (c) 2001, 2002 by D-Link Corporation
+    Written by Edward Peng.<edward_peng@dlink.com.tw>
+    Created 03-May-2001, base on Linux' sundance.c.
+
+*/
+
+#ifndef __DL2K_H__
+#define __DL2K_H__
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/crc32.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/bitops.h>
+#include <asm/processor.h>	/* Processor type for cache alignment. */
+#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/time.h>
+#define TX_RING_SIZE	256
+#define TX_QUEUE_LEN	(TX_RING_SIZE - 1) /* Limit ring entries actually used.*/
+#define RX_RING_SIZE 	256
+#define TX_TOTAL_SIZE	TX_RING_SIZE*sizeof(struct netdev_desc)
+#define RX_TOTAL_SIZE	RX_RING_SIZE*sizeof(struct netdev_desc)
+
+/* Offsets to the device registers.
+   Unlike software-only systems, device drivers interact with complex hardware.
+   It's not useful to define symbolic names for every register bit in the
+   device.  The name can only partially document the semantics and make
+   the driver longer and more difficult to read.
+   In general, only the important configuration values or bits changed
+   multiple times should be defined symbolically.
+*/
+enum dl2x_offsets {
+	/* I/O register offsets */
+	DMACtrl = 0x00,
+	RxDMAStatus = 0x08,
+	TFDListPtr0 = 0x10,
+	TFDListPtr1 = 0x14,
+	TxDMABurstThresh = 0x18,
+	TxDMAUrgentThresh = 0x19,
+	TxDMAPollPeriod = 0x1a,
+	RFDListPtr0 = 0x1c,
+	RFDListPtr1 = 0x20,
+	RxDMABurstThresh = 0x24,
+	RxDMAUrgentThresh = 0x25,
+	RxDMAPollPeriod = 0x26,
+	RxDMAIntCtrl = 0x28,
+	DebugCtrl = 0x2c,
+	ASICCtrl = 0x30,
+	FifoCtrl = 0x38,
+	RxEarlyThresh = 0x3a,
+	FlowOffThresh = 0x3c,
+	FlowOnThresh = 0x3e,
+	TxStartThresh = 0x44,
+	EepromData = 0x48,
+	EepromCtrl = 0x4a,
+	ExpromAddr = 0x4c,
+	Exprodata = 0x50,
+	WakeEvent = 0x51,
+	CountDown = 0x54,
+	IntStatusAck = 0x5a,
+	IntEnable = 0x5c,
+	IntStatus = 0x5e,
+	TxStatus = 0x60,
+	MACCtrl = 0x6c,
+	VLANTag = 0x70,
+	PhyCtrl = 0x76,
+	StationAddr0 = 0x78,
+	StationAddr1 = 0x7a,
+	StationAddr2 = 0x7c,
+	VLANId = 0x80,
+	MaxFrameSize = 0x86,
+	ReceiveMode = 0x88,
+	HashTable0 = 0x8c,
+	HashTable1 = 0x90,
+	RmonStatMask = 0x98,
+	StatMask = 0x9c,
+	RxJumboFrames = 0xbc,
+	TCPCheckSumErrors = 0xc0,
+	IPCheckSumErrors = 0xc2,
+	UDPCheckSumErrors = 0xc4,
+	TxJumboFrames = 0xf4,
+	/* Ethernet MIB statistic register offsets */
+	OctetRcvOk = 0xa8,
+	McstOctetRcvOk = 0xac,
+	BcstOctetRcvOk = 0xb0,
+	FramesRcvOk = 0xb4,
+	McstFramesRcvdOk = 0xb8,
+	BcstFramesRcvdOk = 0xbe,
+	MacControlFramesRcvd = 0xc6,
+	FrameTooLongErrors = 0xc8,
+	InRangeLengthErrors = 0xca,
+	FramesCheckSeqErrors = 0xcc,
+	FramesLostRxErrors = 0xce,
+	OctetXmtOk = 0xd0,
+	McstOctetXmtOk = 0xd4,
+	BcstOctetXmtOk = 0xd8,
+	FramesXmtOk = 0xdc,
+	McstFramesXmtdOk = 0xe0,
+	FramesWDeferredXmt = 0xe4,
+	LateCollisions = 0xe8,
+	MultiColFrames = 0xec,
+	SingleColFrames = 0xf0,
+	BcstFramesXmtdOk = 0xf6,
+	CarrierSenseErrors = 0xf8,
+	MacControlFramesXmtd = 0xfa,
+	FramesAbortXSColls = 0xfc,
+	FramesWEXDeferal = 0xfe,
+	/* RMON statistic register offsets */
+	EtherStatsCollisions = 0x100,
+	EtherStatsOctetsTransmit = 0x104,
+	EtherStatsPktsTransmit = 0x108,
+	EtherStatsPkts64OctetTransmit = 0x10c,
+	EtherStats65to127OctetsTransmit = 0x110,
+	EtherStatsPkts128to255OctetsTransmit = 0x114,
+	EtherStatsPkts256to511OctetsTransmit = 0x118,
+	EtherStatsPkts512to1023OctetsTransmit = 0x11c,
+	EtherStatsPkts1024to1518OctetsTransmit = 0x120,
+	EtherStatsCRCAlignErrors = 0x124,
+	EtherStatsUndersizePkts = 0x128,
+	EtherStatsFragments = 0x12c,
+	EtherStatsJabbers = 0x130,
+	EtherStatsOctets = 0x134,
+	EtherStatsPkts = 0x138,
+	EtherStats64Octets = 0x13c,
+	EtherStatsPkts65to127Octets = 0x140,
+	EtherStatsPkts128to255Octets = 0x144,
+	EtherStatsPkts256to511Octets = 0x148,
+	EtherStatsPkts512to1023Octets = 0x14c,
+	EtherStatsPkts1024to1518Octets = 0x150,
+};
+
+/* Bits in the interrupt status/mask registers. */
+enum IntStatus_bits {
+	InterruptStatus = 0x0001,
+	HostError = 0x0002,
+	MACCtrlFrame = 0x0008,
+	TxComplete = 0x0004,
+	RxComplete = 0x0010,
+	RxEarly = 0x0020,
+	IntRequested = 0x0040,
+	UpdateStats = 0x0080,
+	LinkEvent = 0x0100,
+	TxDMAComplete = 0x0200,
+	RxDMAComplete = 0x0400,
+	RFDListEnd = 0x0800,
+	RxDMAPriority = 0x1000,
+};
+
+/* Bits in the ReceiveMode register. */
+enum ReceiveMode_bits {
+	ReceiveUnicast = 0x0001,
+	ReceiveMulticast = 0x0002,
+	ReceiveBroadcast = 0x0004,
+	ReceiveAllFrames = 0x0008,
+	ReceiveMulticastHash = 0x0010,
+	ReceiveIPMulticast = 0x0020,
+	ReceiveVLANMatch = 0x0100,
+	ReceiveVLANHash = 0x0200,
+};
+/* Bits in MACCtrl. */
+enum MACCtrl_bits {
+	DuplexSelect = 0x20,
+	TxFlowControlEnable = 0x80,
+	RxFlowControlEnable = 0x0100,
+	RcvFCS = 0x200,
+	AutoVLANtagging = 0x1000,
+	AutoVLANuntagging = 0x2000,
+	StatsEnable = 0x00200000,
+	StatsDisable = 0x00400000,
+	StatsEnabled = 0x00800000,
+	TxEnable = 0x01000000,
+	TxDisable = 0x02000000,
+	TxEnabled = 0x04000000,
+	RxEnable = 0x08000000,
+	RxDisable = 0x10000000,
+	RxEnabled = 0x20000000,
+};
+
+enum ASICCtrl_LoWord_bits {
+	PhyMedia = 0x0080,
+};
+
+enum ASICCtrl_HiWord_bits {
+	GlobalReset = 0x0001,
+	RxReset = 0x0002,
+	TxReset = 0x0004,
+	DMAReset = 0x0008,
+	FIFOReset = 0x0010,
+	NetworkReset = 0x0020,
+	HostReset = 0x0040,
+	ResetBusy = 0x0400,
+};
+
+#define IPG_AC_LED_MODE		BIT(14)
+#define IPG_AC_LED_SPEED	BIT(27)
+#define IPG_AC_LED_MODE_BIT_1	BIT(29)
+
+/* Transmit Frame Control bits */
+enum TFC_bits {
+	DwordAlign = 0x00000000,
+	WordAlignDisable = 0x00030000,
+	WordAlign = 0x00020000,
+	TCPChecksumEnable = 0x00040000,
+	UDPChecksumEnable = 0x00080000,
+	IPChecksumEnable = 0x00100000,
+	FCSAppendDisable = 0x00200000,
+	TxIndicate = 0x00400000,
+	TxDMAIndicate = 0x00800000,
+	FragCountShift = 24,
+	VLANTagInsert = 0x0000000010000000,
+	TFDDone = 0x80000000,
+	VIDShift = 32,
+	UsePriorityShift = 48,
+};
+
+/* Receive Frames Status bits */
+enum RFS_bits {
+	RxFIFOOverrun = 0x00010000,
+	RxRuntFrame = 0x00020000,
+	RxAlignmentError = 0x00040000,
+	RxFCSError = 0x00080000,
+	RxOverSizedFrame = 0x00100000,
+	RxLengthError = 0x00200000,
+	VLANDetected = 0x00400000,
+	TCPDetected = 0x00800000,
+	TCPError = 0x01000000,
+	UDPDetected = 0x02000000,
+	UDPError = 0x04000000,
+	IPDetected = 0x08000000,
+	IPError = 0x10000000,
+	FrameStart = 0x20000000,
+	FrameEnd = 0x40000000,
+	RFDDone = 0x80000000,
+	TCIShift = 32,
+	RFS_Errors = 0x003f0000,
+};
+
+#define MII_RESET_TIME_OUT		10000
+/* MII register */
+enum _mii_reg {
+	MII_PHY_SCR = 16,
+};
+
+/* PCS register */
+enum _pcs_reg {
+	PCS_BMCR = 0,
+	PCS_BMSR = 1,
+	PCS_ANAR = 4,
+	PCS_ANLPAR = 5,
+	PCS_ANER = 6,
+	PCS_ANNPT = 7,
+	PCS_ANLPRNP = 8,
+	PCS_ESR = 15,
+};
+
+/* IEEE Extened Status Register */
+enum _mii_esr {
+	MII_ESR_1000BX_FD = 0x8000,
+	MII_ESR_1000BX_HD = 0x4000,
+	MII_ESR_1000BT_FD = 0x2000,
+	MII_ESR_1000BT_HD = 0x1000,
+};
+/* PHY Specific Control Register */
+#if 0
+typedef union t_MII_PHY_SCR {
+	u16 image;
+	struct {
+		u16 disable_jabber:1;	// bit 0
+		u16 polarity_reversal:1;	// bit 1
+		u16 SEQ_test:1;	// bit 2
+		u16 _bit_3:1;	// bit 3
+		u16 disable_CLK125:1;	// bit 4
+		u16 mdi_crossover_mode:2;	// bit 6:5
+		u16 enable_ext_dist:1;	// bit 7
+		u16 _bit_8_9:2;	// bit 9:8
+		u16 force_link:1;	// bit 10
+		u16 assert_CRS:1;	// bit 11
+		u16 rcv_fifo_depth:2;	// bit 13:12
+		u16 xmit_fifo_depth:2;	// bit 15:14
+	} bits;
+} PHY_SCR_t, *PPHY_SCR_t;
+#endif
+
+typedef enum t_MII_ADMIN_STATUS {
+	adm_reset,
+	adm_operational,
+	adm_loopback,
+	adm_power_down,
+	adm_isolate
+} MII_ADMIN_t, *PMII_ADMIN_t;
+
+/* Physical Coding Sublayer Management (PCS) */
+/* PCS control and status registers bitmap as the same as MII */
+/* PCS Extended Status register bitmap as the same as MII */
+/* PCS ANAR */
+enum _pcs_anar {
+	PCS_ANAR_NEXT_PAGE = 0x8000,
+	PCS_ANAR_REMOTE_FAULT = 0x3000,
+	PCS_ANAR_ASYMMETRIC = 0x0100,
+	PCS_ANAR_PAUSE = 0x0080,
+	PCS_ANAR_HALF_DUPLEX = 0x0040,
+	PCS_ANAR_FULL_DUPLEX = 0x0020,
+};
+/* PCS ANLPAR */
+enum _pcs_anlpar {
+	PCS_ANLPAR_NEXT_PAGE = PCS_ANAR_NEXT_PAGE,
+	PCS_ANLPAR_REMOTE_FAULT = PCS_ANAR_REMOTE_FAULT,
+	PCS_ANLPAR_ASYMMETRIC = PCS_ANAR_ASYMMETRIC,
+	PCS_ANLPAR_PAUSE = PCS_ANAR_PAUSE,
+	PCS_ANLPAR_HALF_DUPLEX = PCS_ANAR_HALF_DUPLEX,
+	PCS_ANLPAR_FULL_DUPLEX = PCS_ANAR_FULL_DUPLEX,
+};
+
+typedef struct t_SROM {
+	u16 config_param;	/* 0x00 */
+	u16 asic_ctrl;		/* 0x02 */
+	u16 sub_vendor_id;	/* 0x04 */
+	u16 sub_system_id;	/* 0x06 */
+	u16 pci_base_1;		/* 0x08 (IP1000A only) */
+	u16 pci_base_2;		/* 0x0a (IP1000A only) */
+	u16 led_mode;		/* 0x0c (IP1000A only) */
+	u16 reserved1[9];	/* 0x0e-0x1f */
+	u8 mac_addr[6];		/* 0x20-0x25 */
+	u8 reserved2[10];	/* 0x26-0x2f */
+	u8 sib[204];		/* 0x30-0xfb */
+	u32 crc;		/* 0xfc-0xff */
+} SROM_t, *PSROM_t;
+
+/* Ioctl custom data */
+struct ioctl_data {
+	char signature[10];
+	int cmd;
+	int len;
+	char *data;
+};
+
+/* The Rx and Tx buffer descriptors. */
+struct netdev_desc {
+	__le64 next_desc;
+	__le64 status;
+	__le64 fraginfo;
+};
+
+#define PRIV_ALIGN	15	/* Required alignment mask */
+/* Use  __attribute__((aligned (L1_CACHE_BYTES)))  to maintain alignment
+   within the structure. */
+struct netdev_private {
+	/* Descriptor rings first for alignment. */
+	struct netdev_desc *rx_ring;
+	struct netdev_desc *tx_ring;
+	struct sk_buff *rx_skbuff[RX_RING_SIZE];
+	struct sk_buff *tx_skbuff[TX_RING_SIZE];
+	dma_addr_t tx_ring_dma;
+	dma_addr_t rx_ring_dma;
+	struct pci_dev *pdev;
+	void __iomem *ioaddr;
+	void __iomem *eeprom_addr;
+	spinlock_t tx_lock;
+	spinlock_t rx_lock;
+	unsigned int rx_buf_sz;		/* Based on MTU+slack. */
+	unsigned int speed;		/* Operating speed */
+	unsigned int vlan;		/* VLAN Id */
+	unsigned int chip_id;		/* PCI table chip id */
+	unsigned int rx_coalesce; 	/* Maximum frames each RxDMAComplete intr */
+	unsigned int rx_timeout; 	/* Wait time between RxDMAComplete intr */
+	unsigned int tx_coalesce;	/* Maximum frames each tx interrupt */
+	unsigned int full_duplex:1;	/* Full-duplex operation requested. */
+	unsigned int an_enable:2;	/* Auto-Negotiated Enable */
+	unsigned int jumbo:1;		/* Jumbo frame enable */
+	unsigned int coalesce:1;	/* Rx coalescing enable */
+	unsigned int tx_flow:1;		/* Tx flow control enable */
+	unsigned int rx_flow:1;		/* Rx flow control enable */
+	unsigned int phy_media:1;	/* 1: fiber, 0: copper */
+	unsigned int link_status:1;	/* Current link status */
+	struct netdev_desc *last_tx;	/* Last Tx descriptor used. */
+	unsigned long cur_rx, old_rx;	/* Producer/consumer ring indices */
+	unsigned long cur_tx, old_tx;
+	struct timer_list timer;
+	int wake_polarity;
+	char name[256];		/* net device description */
+	u8 duplex_polarity;
+	u16 mcast_filter[4];
+	u16 advertising;	/* NWay media advertisement */
+	u16 negotiate;		/* Negotiated media */
+	int phy_addr;		/* PHY addresses. */
+	u16 led_mode;		/* LED mode read from EEPROM (IP1000A only) */
+};
+
+/* The station address location in the EEPROM. */
+/* The struct pci_device_id consist of:
+        vendor, device          Vendor and device ID to match (or PCI_ANY_ID)
+        subvendor, subdevice    Subsystem vendor and device ID to match (or PCI_ANY_ID)
+        class                   Device class to match. The class_mask tells which bits
+        class_mask              of the class are honored during the comparison.
+        driver_data             Data private to the driver.
+*/
+#define CHIP_IP1000A	1
+
+static const struct pci_device_id rio_pci_tbl[] = {
+	{0x1186, 0x4000, PCI_ANY_ID, PCI_ANY_ID, },
+	{0x13f0, 0x1021, PCI_ANY_ID, PCI_ANY_ID, },
+	{ PCI_VDEVICE(SUNDANCE,	0x1023), CHIP_IP1000A },
+	{ PCI_VDEVICE(SUNDANCE,	0x2021), CHIP_IP1000A },
+	{ PCI_VDEVICE(DLINK,	0x9021), CHIP_IP1000A },
+	{ PCI_VDEVICE(DLINK,	0x4020), CHIP_IP1000A },
+	{ }
+};
+MODULE_DEVICE_TABLE (pci, rio_pci_tbl);
+#define TX_TIMEOUT  (4*HZ)
+#define PACKET_SIZE		1536
+#define MAX_JUMBO		8000
+#define RIO_IO_SIZE             340
+#define DEFAULT_RXC		5
+#define DEFAULT_RXT		750
+#define DEFAULT_TXC		1
+#define MAX_TXC			8
+#endif				/* __DL2K_H__ */
diff --git a/drivers/net/ethernet/dlink/sundance.c b/drivers/net/ethernet/dlink/sundance.c
new file mode 100644
index 000000000..43def191f
--- /dev/null
+++ b/drivers/net/ethernet/dlink/sundance.c
@@ -0,0 +1,1987 @@
+/* sundance.c: A Linux device driver for the Sundance ST201 "Alta". */
+/*
+	Written 1999-2000 by Donald Becker.
+
+	This software may be used and distributed according to the terms of
+	the GNU General Public License (GPL), incorporated herein by reference.
+	Drivers based on or derived from this code fall under the GPL and must
+	retain the authorship, copyright and license notice.  This file is not
+	a complete program and may only be used when the entire operating
+	system is licensed under the GPL.
+
+	The author may be reached as becker@scyld.com, or C/O
+	Scyld Computing Corporation
+	410 Severn Ave., Suite 210
+	Annapolis MD 21403
+
+	Support and updates available at
+	http://www.scyld.com/network/sundance.html
+	[link no longer provides useful info -jgarzik]
+	Archives of the mailing list are still available at
+	https://www.beowulf.org/pipermail/netdrivers/
+
+*/
+
+#define DRV_NAME	"sundance"
+
+/* The user-configurable values.
+   These may be modified when a driver module is loaded.*/
+static int debug = 1;			/* 1 normal messages, 0 quiet .. 7 verbose. */
+/* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
+   Typical is a 64 element hash table based on the Ethernet CRC.  */
+static const int multicast_filter_limit = 32;
+
+/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
+   Setting to > 1518 effectively disables this feature.
+   This chip can receive into offset buffers, so the Alpha does not
+   need a copy-align. */
+static int rx_copybreak;
+static int flowctrl=1;
+
+/* media[] specifies the media type the NIC operates at.
+		 autosense	Autosensing active media.
+		 10mbps_hd 	10Mbps half duplex.
+		 10mbps_fd 	10Mbps full duplex.
+		 100mbps_hd 	100Mbps half duplex.
+		 100mbps_fd 	100Mbps full duplex.
+		 0		Autosensing active media.
+		 1	 	10Mbps half duplex.
+		 2	 	10Mbps full duplex.
+		 3	 	100Mbps half duplex.
+		 4	 	100Mbps full duplex.
+*/
+#define MAX_UNITS 8
+static char *media[MAX_UNITS];
+
+
+/* Operational parameters that are set at compile time. */
+
+/* Keep the ring sizes a power of two for compile efficiency.
+   The compiler will convert <unsigned>'%'<2^N> into a bit mask.
+   Making the Tx ring too large decreases the effectiveness of channel
+   bonding and packet priority, and more than 128 requires modifying the
+   Tx error recovery.
+   Large receive rings merely waste memory. */
+#define TX_RING_SIZE	32
+#define TX_QUEUE_LEN	(TX_RING_SIZE - 1) /* Limit ring entries actually used.  */
+#define RX_RING_SIZE	64
+#define RX_BUDGET	32
+#define TX_TOTAL_SIZE	TX_RING_SIZE*sizeof(struct netdev_desc)
+#define RX_TOTAL_SIZE	RX_RING_SIZE*sizeof(struct netdev_desc)
+
+/* Operational parameters that usually are not changed. */
+/* Time in jiffies before concluding the transmitter is hung. */
+#define TX_TIMEOUT  (4*HZ)
+#define PKT_BUF_SZ		1536	/* Size of each temporary Rx buffer.*/
+
+/* Include files, designed to support most kernel versions 2.0.0 and later. */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <linux/uaccess.h>
+#include <asm/processor.h>		/* Processor type for cache alignment. */
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/dma-mapping.h>
+#include <linux/crc32.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+
+MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
+MODULE_DESCRIPTION("Sundance Alta Ethernet driver");
+MODULE_LICENSE("GPL");
+
+module_param(debug, int, 0);
+module_param(rx_copybreak, int, 0);
+module_param_array(media, charp, NULL, 0);
+module_param(flowctrl, int, 0);
+MODULE_PARM_DESC(debug, "Sundance Alta debug level (0-5)");
+MODULE_PARM_DESC(rx_copybreak, "Sundance Alta copy breakpoint for copy-only-tiny-frames");
+MODULE_PARM_DESC(flowctrl, "Sundance Alta flow control [0|1]");
+
+/*
+				Theory of Operation
+
+I. Board Compatibility
+
+This driver is designed for the Sundance Technologies "Alta" ST201 chip.
+
+II. Board-specific settings
+
+III. Driver operation
+
+IIIa. Ring buffers
+
+This driver uses two statically allocated fixed-size descriptor lists
+formed into rings by a branch from the final descriptor to the beginning of
+the list.  The ring sizes are set at compile time by RX/TX_RING_SIZE.
+Some chips explicitly use only 2^N sized rings, while others use a
+'next descriptor' pointer that the driver forms into rings.
+
+IIIb/c. Transmit/Receive Structure
+
+This driver uses a zero-copy receive and transmit scheme.
+The driver allocates full frame size skbuffs for the Rx ring buffers at
+open() time and passes the skb->data field to the chip as receive data
+buffers.  When an incoming frame is less than RX_COPYBREAK bytes long,
+a fresh skbuff is allocated and the frame is copied to the new skbuff.
+When the incoming frame is larger, the skbuff is passed directly up the
+protocol stack.  Buffers consumed this way are replaced by newly allocated
+skbuffs in a later phase of receives.
+
+The RX_COPYBREAK value is chosen to trade-off the memory wasted by
+using a full-sized skbuff for small frames vs. the copying costs of larger
+frames.  New boards are typically used in generously configured machines
+and the underfilled buffers have negligible impact compared to the benefit of
+a single allocation size, so the default value of zero results in never
+copying packets.  When copying is done, the cost is usually mitigated by using
+a combined copy/checksum routine.  Copying also preloads the cache, which is
+most useful with small frames.
+
+A subtle aspect of the operation is that the IP header at offset 14 in an
+ethernet frame isn't longword aligned for further processing.
+Unaligned buffers are permitted by the Sundance hardware, so
+frames are received into the skbuff at an offset of "+2", 16-byte aligning
+the IP header.
+
+IIId. Synchronization
+
+The driver runs as two independent, single-threaded flows of control.  One
+is the send-packet routine, which enforces single-threaded use by the
+dev->tbusy flag.  The other thread is the interrupt handler, which is single
+threaded by the hardware and interrupt handling software.
+
+The send packet thread has partial control over the Tx ring and 'dev->tbusy'
+flag.  It sets the tbusy flag whenever it's queuing a Tx packet. If the next
+queue slot is empty, it clears the tbusy flag when finished otherwise it sets
+the 'lp->tx_full' flag.
+
+The interrupt handler has exclusive control over the Rx ring and records stats
+from the Tx ring.  After reaping the stats, it marks the Tx queue entry as
+empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it
+clears both the tx_full and tbusy flags.
+
+IV. Notes
+
+IVb. References
+
+The Sundance ST201 datasheet, preliminary version.
+The Kendin KS8723 datasheet, preliminary version.
+The ICplus IP100 datasheet, preliminary version.
+http://www.scyld.com/expert/100mbps.html
+http://www.scyld.com/expert/NWay.html
+
+IVc. Errata
+
+*/
+
+/* Work-around for Kendin chip bugs. */
+#ifndef CONFIG_SUNDANCE_MMIO
+#define USE_IO_OPS 1
+#endif
+
+static const struct pci_device_id sundance_pci_tbl[] = {
+	{ 0x1186, 0x1002, 0x1186, 0x1002, 0, 0, 0 },
+	{ 0x1186, 0x1002, 0x1186, 0x1003, 0, 0, 1 },
+	{ 0x1186, 0x1002, 0x1186, 0x1012, 0, 0, 2 },
+	{ 0x1186, 0x1002, 0x1186, 0x1040, 0, 0, 3 },
+	{ 0x1186, 0x1002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
+	{ 0x13F0, 0x0201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
+	{ 0x13F0, 0x0200, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
+	{ }
+};
+MODULE_DEVICE_TABLE(pci, sundance_pci_tbl);
+
+enum {
+	netdev_io_size = 128
+};
+
+struct pci_id_info {
+        const char *name;
+};
+static const struct pci_id_info pci_id_tbl[] = {
+	{"D-Link DFE-550TX FAST Ethernet Adapter"},
+	{"D-Link DFE-550FX 100Mbps Fiber-optics Adapter"},
+	{"D-Link DFE-580TX 4 port Server Adapter"},
+	{"D-Link DFE-530TXS FAST Ethernet Adapter"},
+	{"D-Link DL10050-based FAST Ethernet Adapter"},
+	{"Sundance Technology Alta"},
+	{"IC Plus Corporation IP100A FAST Ethernet Adapter"},
+	{ }	/* terminate list. */
+};
+
+/* This driver was written to use PCI memory space, however x86-oriented
+   hardware often uses I/O space accesses. */
+
+/* Offsets to the device registers.
+   Unlike software-only systems, device drivers interact with complex hardware.
+   It's not useful to define symbolic names for every register bit in the
+   device.  The name can only partially document the semantics and make
+   the driver longer and more difficult to read.
+   In general, only the important configuration values or bits changed
+   multiple times should be defined symbolically.
+*/
+enum alta_offsets {
+	DMACtrl = 0x00,
+	TxListPtr = 0x04,
+	TxDMABurstThresh = 0x08,
+	TxDMAUrgentThresh = 0x09,
+	TxDMAPollPeriod = 0x0a,
+	RxDMAStatus = 0x0c,
+	RxListPtr = 0x10,
+	DebugCtrl0 = 0x1a,
+	DebugCtrl1 = 0x1c,
+	RxDMABurstThresh = 0x14,
+	RxDMAUrgentThresh = 0x15,
+	RxDMAPollPeriod = 0x16,
+	LEDCtrl = 0x1a,
+	ASICCtrl = 0x30,
+	EEData = 0x34,
+	EECtrl = 0x36,
+	FlashAddr = 0x40,
+	FlashData = 0x44,
+	WakeEvent = 0x45,
+	TxStatus = 0x46,
+	TxFrameId = 0x47,
+	DownCounter = 0x18,
+	IntrClear = 0x4a,
+	IntrEnable = 0x4c,
+	IntrStatus = 0x4e,
+	MACCtrl0 = 0x50,
+	MACCtrl1 = 0x52,
+	StationAddr = 0x54,
+	MaxFrameSize = 0x5A,
+	RxMode = 0x5c,
+	MIICtrl = 0x5e,
+	MulticastFilter0 = 0x60,
+	MulticastFilter1 = 0x64,
+	RxOctetsLow = 0x68,
+	RxOctetsHigh = 0x6a,
+	TxOctetsLow = 0x6c,
+	TxOctetsHigh = 0x6e,
+	TxFramesOK = 0x70,
+	RxFramesOK = 0x72,
+	StatsCarrierError = 0x74,
+	StatsLateColl = 0x75,
+	StatsMultiColl = 0x76,
+	StatsOneColl = 0x77,
+	StatsTxDefer = 0x78,
+	RxMissed = 0x79,
+	StatsTxXSDefer = 0x7a,
+	StatsTxAbort = 0x7b,
+	StatsBcastTx = 0x7c,
+	StatsBcastRx = 0x7d,
+	StatsMcastTx = 0x7e,
+	StatsMcastRx = 0x7f,
+	/* Aliased and bogus values! */
+	RxStatus = 0x0c,
+};
+
+#define ASIC_HI_WORD(x)	((x) + 2)
+
+enum ASICCtrl_HiWord_bit {
+	GlobalReset = 0x0001,
+	RxReset = 0x0002,
+	TxReset = 0x0004,
+	DMAReset = 0x0008,
+	FIFOReset = 0x0010,
+	NetworkReset = 0x0020,
+	HostReset = 0x0040,
+	ResetBusy = 0x0400,
+};
+
+/* Bits in the interrupt status/mask registers. */
+enum intr_status_bits {
+	IntrSummary=0x0001, IntrPCIErr=0x0002, IntrMACCtrl=0x0008,
+	IntrTxDone=0x0004, IntrRxDone=0x0010, IntrRxStart=0x0020,
+	IntrDrvRqst=0x0040,
+	StatsMax=0x0080, LinkChange=0x0100,
+	IntrTxDMADone=0x0200, IntrRxDMADone=0x0400,
+};
+
+/* Bits in the RxMode register. */
+enum rx_mode_bits {
+	AcceptAllIPMulti=0x20, AcceptMultiHash=0x10, AcceptAll=0x08,
+	AcceptBroadcast=0x04, AcceptMulticast=0x02, AcceptMyPhys=0x01,
+};
+/* Bits in MACCtrl. */
+enum mac_ctrl0_bits {
+	EnbFullDuplex=0x20, EnbRcvLargeFrame=0x40,
+	EnbFlowCtrl=0x100, EnbPassRxCRC=0x200,
+};
+enum mac_ctrl1_bits {
+	StatsEnable=0x0020,	StatsDisable=0x0040, StatsEnabled=0x0080,
+	TxEnable=0x0100, TxDisable=0x0200, TxEnabled=0x0400,
+	RxEnable=0x0800, RxDisable=0x1000, RxEnabled=0x2000,
+};
+
+/* Bits in WakeEvent register. */
+enum wake_event_bits {
+	WakePktEnable = 0x01,
+	MagicPktEnable = 0x02,
+	LinkEventEnable = 0x04,
+	WolEnable = 0x80,
+};
+
+/* The Rx and Tx buffer descriptors. */
+/* Note that using only 32 bit fields simplifies conversion to big-endian
+   architectures. */
+struct netdev_desc {
+	__le32 next_desc;
+	__le32 status;
+	struct desc_frag { __le32 addr, length; } frag;
+};
+
+/* Bits in netdev_desc.status */
+enum desc_status_bits {
+	DescOwn=0x8000,
+	DescEndPacket=0x4000,
+	DescEndRing=0x2000,
+	LastFrag=0x80000000,
+	DescIntrOnTx=0x8000,
+	DescIntrOnDMADone=0x80000000,
+	DisableAlign = 0x00000001,
+};
+
+#define PRIV_ALIGN	15 	/* Required alignment mask */
+/* Use  __attribute__((aligned (L1_CACHE_BYTES)))  to maintain alignment
+   within the structure. */
+#define MII_CNT		4
+struct netdev_private {
+	/* Descriptor rings first for alignment. */
+	struct netdev_desc *rx_ring;
+	struct netdev_desc *tx_ring;
+	struct sk_buff* rx_skbuff[RX_RING_SIZE];
+	struct sk_buff* tx_skbuff[TX_RING_SIZE];
+        dma_addr_t tx_ring_dma;
+        dma_addr_t rx_ring_dma;
+	struct timer_list timer;		/* Media monitoring timer. */
+	struct net_device *ndev;		/* backpointer */
+	/* ethtool extra stats */
+	struct {
+		u64 tx_multiple_collisions;
+		u64 tx_single_collisions;
+		u64 tx_late_collisions;
+		u64 tx_deferred;
+		u64 tx_deferred_excessive;
+		u64 tx_aborted;
+		u64 tx_bcasts;
+		u64 rx_bcasts;
+		u64 tx_mcasts;
+		u64 rx_mcasts;
+	} xstats;
+	/* Frequently used values: keep some adjacent for cache effect. */
+	spinlock_t lock;
+	int msg_enable;
+	int chip_id;
+	unsigned int cur_rx, dirty_rx;		/* Producer/consumer ring indices */
+	unsigned int rx_buf_sz;			/* Based on MTU+slack. */
+	struct netdev_desc *last_tx;		/* Last Tx descriptor used. */
+	unsigned int cur_tx, dirty_tx;
+	/* These values are keep track of the transceiver/media in use. */
+	unsigned int flowctrl:1;
+	unsigned int default_port:4;		/* Last dev->if_port value. */
+	unsigned int an_enable:1;
+	unsigned int speed;
+	unsigned int wol_enabled:1;			/* Wake on LAN enabled */
+	struct tasklet_struct rx_tasklet;
+	struct tasklet_struct tx_tasklet;
+	int budget;
+	int cur_task;
+	/* Multicast and receive mode. */
+	spinlock_t mcastlock;			/* SMP lock multicast updates. */
+	u16 mcast_filter[4];
+	/* MII transceiver section. */
+	struct mii_if_info mii_if;
+	int mii_preamble_required;
+	unsigned char phys[MII_CNT];		/* MII device addresses, only first one used. */
+	struct pci_dev *pci_dev;
+	void __iomem *base;
+	spinlock_t statlock;
+};
+
+/* The station address location in the EEPROM. */
+#define EEPROM_SA_OFFSET	0x10
+#define DEFAULT_INTR (IntrRxDMADone | IntrPCIErr | \
+			IntrDrvRqst | IntrTxDone | StatsMax | \
+			LinkChange)
+
+static int  change_mtu(struct net_device *dev, int new_mtu);
+static int  eeprom_read(void __iomem *ioaddr, int location);
+static int  mdio_read(struct net_device *dev, int phy_id, int location);
+static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
+static int  mdio_wait_link(struct net_device *dev, int wait);
+static int  netdev_open(struct net_device *dev);
+static void check_duplex(struct net_device *dev);
+static void netdev_timer(struct timer_list *t);
+static void tx_timeout(struct net_device *dev, unsigned int txqueue);
+static void init_ring(struct net_device *dev);
+static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev);
+static int reset_tx (struct net_device *dev);
+static irqreturn_t intr_handler(int irq, void *dev_instance);
+static void rx_poll(struct tasklet_struct *t);
+static void tx_poll(struct tasklet_struct *t);
+static void refill_rx (struct net_device *dev);
+static void netdev_error(struct net_device *dev, int intr_status);
+static void netdev_error(struct net_device *dev, int intr_status);
+static void set_rx_mode(struct net_device *dev);
+static int __set_mac_addr(struct net_device *dev);
+static int sundance_set_mac_addr(struct net_device *dev, void *data);
+static struct net_device_stats *get_stats(struct net_device *dev);
+static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static int  netdev_close(struct net_device *dev);
+static const struct ethtool_ops ethtool_ops;
+
+static void sundance_reset(struct net_device *dev, unsigned long reset_cmd)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base + ASICCtrl;
+	int countdown;
+
+	/* ST201 documentation states ASICCtrl is a 32bit register */
+	iowrite32 (reset_cmd | ioread32 (ioaddr), ioaddr);
+	/* ST201 documentation states reset can take up to 1 ms */
+	countdown = 10 + 1;
+	while (ioread32 (ioaddr) & (ResetBusy << 16)) {
+		if (--countdown == 0) {
+			printk(KERN_WARNING "%s : reset not completed !!\n", dev->name);
+			break;
+		}
+		udelay(100);
+	}
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void sundance_poll_controller(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+
+	disable_irq(np->pci_dev->irq);
+	intr_handler(np->pci_dev->irq, dev);
+	enable_irq(np->pci_dev->irq);
+}
+#endif
+
+static const struct net_device_ops netdev_ops = {
+	.ndo_open		= netdev_open,
+	.ndo_stop		= netdev_close,
+	.ndo_start_xmit		= start_tx,
+	.ndo_get_stats 		= get_stats,
+	.ndo_set_rx_mode	= set_rx_mode,
+	.ndo_eth_ioctl		= netdev_ioctl,
+	.ndo_tx_timeout		= tx_timeout,
+	.ndo_change_mtu		= change_mtu,
+	.ndo_set_mac_address 	= sundance_set_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller 	= sundance_poll_controller,
+#endif
+};
+
+static int sundance_probe1(struct pci_dev *pdev,
+			   const struct pci_device_id *ent)
+{
+	struct net_device *dev;
+	struct netdev_private *np;
+	static int card_idx;
+	int chip_idx = ent->driver_data;
+	int irq;
+	int i;
+	void __iomem *ioaddr;
+	u16 mii_ctl;
+	void *ring_space;
+	dma_addr_t ring_dma;
+#ifdef USE_IO_OPS
+	int bar = 0;
+#else
+	int bar = 1;
+#endif
+	int phy, phy_end, phy_idx = 0;
+	__le16 addr[ETH_ALEN / 2];
+
+	if (pci_enable_device(pdev))
+		return -EIO;
+	pci_set_master(pdev);
+
+	irq = pdev->irq;
+
+	dev = alloc_etherdev(sizeof(*np));
+	if (!dev)
+		return -ENOMEM;
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+	if (pci_request_regions(pdev, DRV_NAME))
+		goto err_out_netdev;
+
+	ioaddr = pci_iomap(pdev, bar, netdev_io_size);
+	if (!ioaddr)
+		goto err_out_res;
+
+	for (i = 0; i < 3; i++)
+		addr[i] =
+			cpu_to_le16(eeprom_read(ioaddr, i + EEPROM_SA_OFFSET));
+	eth_hw_addr_set(dev, (u8 *)addr);
+
+	np = netdev_priv(dev);
+	np->ndev = dev;
+	np->base = ioaddr;
+	np->pci_dev = pdev;
+	np->chip_id = chip_idx;
+	np->msg_enable = (1 << debug) - 1;
+	spin_lock_init(&np->lock);
+	spin_lock_init(&np->statlock);
+	tasklet_setup(&np->rx_tasklet, rx_poll);
+	tasklet_setup(&np->tx_tasklet, tx_poll);
+
+	ring_space = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE,
+			&ring_dma, GFP_KERNEL);
+	if (!ring_space)
+		goto err_out_cleardev;
+	np->tx_ring = (struct netdev_desc *)ring_space;
+	np->tx_ring_dma = ring_dma;
+
+	ring_space = dma_alloc_coherent(&pdev->dev, RX_TOTAL_SIZE,
+			&ring_dma, GFP_KERNEL);
+	if (!ring_space)
+		goto err_out_unmap_tx;
+	np->rx_ring = (struct netdev_desc *)ring_space;
+	np->rx_ring_dma = ring_dma;
+
+	np->mii_if.dev = dev;
+	np->mii_if.mdio_read = mdio_read;
+	np->mii_if.mdio_write = mdio_write;
+	np->mii_if.phy_id_mask = 0x1f;
+	np->mii_if.reg_num_mask = 0x1f;
+
+	/* The chip-specific entries in the device structure. */
+	dev->netdev_ops = &netdev_ops;
+	dev->ethtool_ops = &ethtool_ops;
+	dev->watchdog_timeo = TX_TIMEOUT;
+
+	/* MTU range: 68 - 8191 */
+	dev->min_mtu = ETH_MIN_MTU;
+	dev->max_mtu = 8191;
+
+	pci_set_drvdata(pdev, dev);
+
+	i = register_netdev(dev);
+	if (i)
+		goto err_out_unmap_rx;
+
+	printk(KERN_INFO "%s: %s at %p, %pM, IRQ %d.\n",
+	       dev->name, pci_id_tbl[chip_idx].name, ioaddr,
+	       dev->dev_addr, irq);
+
+	np->phys[0] = 1;		/* Default setting */
+	np->mii_preamble_required++;
+
+	/*
+	 * It seems some phys doesn't deal well with address 0 being accessed
+	 * first
+	 */
+	if (sundance_pci_tbl[np->chip_id].device == 0x0200) {
+		phy = 0;
+		phy_end = 31;
+	} else {
+		phy = 1;
+		phy_end = 32;	/* wraps to zero, due to 'phy & 0x1f' */
+	}
+	for (; phy <= phy_end && phy_idx < MII_CNT; phy++) {
+		int phyx = phy & 0x1f;
+		int mii_status = mdio_read(dev, phyx, MII_BMSR);
+		if (mii_status != 0xffff  &&  mii_status != 0x0000) {
+			np->phys[phy_idx++] = phyx;
+			np->mii_if.advertising = mdio_read(dev, phyx, MII_ADVERTISE);
+			if ((mii_status & 0x0040) == 0)
+				np->mii_preamble_required++;
+			printk(KERN_INFO "%s: MII PHY found at address %d, status "
+				   "0x%4.4x advertising %4.4x.\n",
+				   dev->name, phyx, mii_status, np->mii_if.advertising);
+		}
+	}
+	np->mii_preamble_required--;
+
+	if (phy_idx == 0) {
+		printk(KERN_INFO "%s: No MII transceiver found, aborting.  ASIC status %x\n",
+			   dev->name, ioread32(ioaddr + ASICCtrl));
+		goto err_out_unregister;
+	}
+
+	np->mii_if.phy_id = np->phys[0];
+
+	/* Parse override configuration */
+	np->an_enable = 1;
+	if (card_idx < MAX_UNITS) {
+		if (media[card_idx] != NULL) {
+			np->an_enable = 0;
+			if (strcmp (media[card_idx], "100mbps_fd") == 0 ||
+			    strcmp (media[card_idx], "4") == 0) {
+				np->speed = 100;
+				np->mii_if.full_duplex = 1;
+			} else if (strcmp (media[card_idx], "100mbps_hd") == 0 ||
+				   strcmp (media[card_idx], "3") == 0) {
+				np->speed = 100;
+				np->mii_if.full_duplex = 0;
+			} else if (strcmp (media[card_idx], "10mbps_fd") == 0 ||
+				   strcmp (media[card_idx], "2") == 0) {
+				np->speed = 10;
+				np->mii_if.full_duplex = 1;
+			} else if (strcmp (media[card_idx], "10mbps_hd") == 0 ||
+				   strcmp (media[card_idx], "1") == 0) {
+				np->speed = 10;
+				np->mii_if.full_duplex = 0;
+			} else {
+				np->an_enable = 1;
+			}
+		}
+		if (flowctrl == 1)
+			np->flowctrl = 1;
+	}
+
+	/* Fibre PHY? */
+	if (ioread32 (ioaddr + ASICCtrl) & 0x80) {
+		/* Default 100Mbps Full */
+		if (np->an_enable) {
+			np->speed = 100;
+			np->mii_if.full_duplex = 1;
+			np->an_enable = 0;
+		}
+	}
+	/* Reset PHY */
+	mdio_write (dev, np->phys[0], MII_BMCR, BMCR_RESET);
+	mdelay (300);
+	/* If flow control enabled, we need to advertise it.*/
+	if (np->flowctrl)
+		mdio_write (dev, np->phys[0], MII_ADVERTISE, np->mii_if.advertising | 0x0400);
+	mdio_write (dev, np->phys[0], MII_BMCR, BMCR_ANENABLE|BMCR_ANRESTART);
+	/* Force media type */
+	if (!np->an_enable) {
+		mii_ctl = 0;
+		mii_ctl |= (np->speed == 100) ? BMCR_SPEED100 : 0;
+		mii_ctl |= (np->mii_if.full_duplex) ? BMCR_FULLDPLX : 0;
+		mdio_write (dev, np->phys[0], MII_BMCR, mii_ctl);
+		printk (KERN_INFO "Override speed=%d, %s duplex\n",
+			np->speed, np->mii_if.full_duplex ? "Full" : "Half");
+
+	}
+
+	/* Perhaps move the reset here? */
+	/* Reset the chip to erase previous misconfiguration. */
+	if (netif_msg_hw(np))
+		printk("ASIC Control is %x.\n", ioread32(ioaddr + ASICCtrl));
+	sundance_reset(dev, 0x00ff << 16);
+	if (netif_msg_hw(np))
+		printk("ASIC Control is now %x.\n", ioread32(ioaddr + ASICCtrl));
+
+	card_idx++;
+	return 0;
+
+err_out_unregister:
+	unregister_netdev(dev);
+err_out_unmap_rx:
+	dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE,
+		np->rx_ring, np->rx_ring_dma);
+err_out_unmap_tx:
+	dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE,
+		np->tx_ring, np->tx_ring_dma);
+err_out_cleardev:
+	pci_iounmap(pdev, ioaddr);
+err_out_res:
+	pci_release_regions(pdev);
+err_out_netdev:
+	free_netdev (dev);
+	return -ENODEV;
+}
+
+static int change_mtu(struct net_device *dev, int new_mtu)
+{
+	if (netif_running(dev))
+		return -EBUSY;
+	dev->mtu = new_mtu;
+	return 0;
+}
+
+#define eeprom_delay(ee_addr)	ioread32(ee_addr)
+/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. */
+static int eeprom_read(void __iomem *ioaddr, int location)
+{
+	int boguscnt = 10000;		/* Typical 1900 ticks. */
+	iowrite16(0x0200 | (location & 0xff), ioaddr + EECtrl);
+	do {
+		eeprom_delay(ioaddr + EECtrl);
+		if (! (ioread16(ioaddr + EECtrl) & 0x8000)) {
+			return ioread16(ioaddr + EEData);
+		}
+	} while (--boguscnt > 0);
+	return 0;
+}
+
+/*  MII transceiver control section.
+	Read and write the MII registers using software-generated serial
+	MDIO protocol.  See the MII specifications or DP83840A data sheet
+	for details.
+
+	The maximum data clock rate is 2.5 Mhz.  The minimum timing is usually
+	met by back-to-back 33Mhz PCI cycles. */
+#define mdio_delay() ioread8(mdio_addr)
+
+enum mii_reg_bits {
+	MDIO_ShiftClk=0x0001, MDIO_Data=0x0002, MDIO_EnbOutput=0x0004,
+};
+#define MDIO_EnbIn  (0)
+#define MDIO_WRITE0 (MDIO_EnbOutput)
+#define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput)
+
+/* Generate the preamble required for initial synchronization and
+   a few older transceivers. */
+static void mdio_sync(void __iomem *mdio_addr)
+{
+	int bits = 32;
+
+	/* Establish sync by sending at least 32 logic ones. */
+	while (--bits >= 0) {
+		iowrite8(MDIO_WRITE1, mdio_addr);
+		mdio_delay();
+		iowrite8(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr);
+		mdio_delay();
+	}
+}
+
+static int mdio_read(struct net_device *dev, int phy_id, int location)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *mdio_addr = np->base + MIICtrl;
+	int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
+	int i, retval = 0;
+
+	if (np->mii_preamble_required)
+		mdio_sync(mdio_addr);
+
+	/* Shift the read command bits out. */
+	for (i = 15; i >= 0; i--) {
+		int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
+
+		iowrite8(dataval, mdio_addr);
+		mdio_delay();
+		iowrite8(dataval | MDIO_ShiftClk, mdio_addr);
+		mdio_delay();
+	}
+	/* Read the two transition, 16 data, and wire-idle bits. */
+	for (i = 19; i > 0; i--) {
+		iowrite8(MDIO_EnbIn, mdio_addr);
+		mdio_delay();
+		retval = (retval << 1) | ((ioread8(mdio_addr) & MDIO_Data) ? 1 : 0);
+		iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr);
+		mdio_delay();
+	}
+	return (retval>>1) & 0xffff;
+}
+
+static void mdio_write(struct net_device *dev, int phy_id, int location, int value)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *mdio_addr = np->base + MIICtrl;
+	int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value;
+	int i;
+
+	if (np->mii_preamble_required)
+		mdio_sync(mdio_addr);
+
+	/* Shift the command bits out. */
+	for (i = 31; i >= 0; i--) {
+		int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
+
+		iowrite8(dataval, mdio_addr);
+		mdio_delay();
+		iowrite8(dataval | MDIO_ShiftClk, mdio_addr);
+		mdio_delay();
+	}
+	/* Clear out extra bits. */
+	for (i = 2; i > 0; i--) {
+		iowrite8(MDIO_EnbIn, mdio_addr);
+		mdio_delay();
+		iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr);
+		mdio_delay();
+	}
+}
+
+static int mdio_wait_link(struct net_device *dev, int wait)
+{
+	int bmsr;
+	int phy_id;
+	struct netdev_private *np;
+
+	np = netdev_priv(dev);
+	phy_id = np->phys[0];
+
+	do {
+		bmsr = mdio_read(dev, phy_id, MII_BMSR);
+		if (bmsr & 0x0004)
+			return 0;
+		mdelay(1);
+	} while (--wait > 0);
+	return -1;
+}
+
+static int netdev_open(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	const int irq = np->pci_dev->irq;
+	unsigned long flags;
+	int i;
+
+	sundance_reset(dev, 0x00ff << 16);
+
+	i = request_irq(irq, intr_handler, IRQF_SHARED, dev->name, dev);
+	if (i)
+		return i;
+
+	if (netif_msg_ifup(np))
+		printk(KERN_DEBUG "%s: netdev_open() irq %d\n", dev->name, irq);
+
+	init_ring(dev);
+
+	iowrite32(np->rx_ring_dma, ioaddr + RxListPtr);
+	/* The Tx list pointer is written as packets are queued. */
+
+	/* Initialize other registers. */
+	__set_mac_addr(dev);
+#if IS_ENABLED(CONFIG_VLAN_8021Q)
+	iowrite16(dev->mtu + 18, ioaddr + MaxFrameSize);
+#else
+	iowrite16(dev->mtu + 14, ioaddr + MaxFrameSize);
+#endif
+	if (dev->mtu > 2047)
+		iowrite32(ioread32(ioaddr + ASICCtrl) | 0x0C, ioaddr + ASICCtrl);
+
+	/* Configure the PCI bus bursts and FIFO thresholds. */
+
+	if (dev->if_port == 0)
+		dev->if_port = np->default_port;
+
+	spin_lock_init(&np->mcastlock);
+
+	set_rx_mode(dev);
+	iowrite16(0, ioaddr + IntrEnable);
+	iowrite16(0, ioaddr + DownCounter);
+	/* Set the chip to poll every N*320nsec. */
+	iowrite8(100, ioaddr + RxDMAPollPeriod);
+	iowrite8(127, ioaddr + TxDMAPollPeriod);
+	/* Fix DFE-580TX packet drop issue */
+	if (np->pci_dev->revision >= 0x14)
+		iowrite8(0x01, ioaddr + DebugCtrl1);
+	netif_start_queue(dev);
+
+	spin_lock_irqsave(&np->lock, flags);
+	reset_tx(dev);
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
+
+	/* Disable Wol */
+	iowrite8(ioread8(ioaddr + WakeEvent) | 0x00, ioaddr + WakeEvent);
+	np->wol_enabled = 0;
+
+	if (netif_msg_ifup(np))
+		printk(KERN_DEBUG "%s: Done netdev_open(), status: Rx %x Tx %x "
+			   "MAC Control %x, %4.4x %4.4x.\n",
+			   dev->name, ioread32(ioaddr + RxStatus), ioread8(ioaddr + TxStatus),
+			   ioread32(ioaddr + MACCtrl0),
+			   ioread16(ioaddr + MACCtrl1), ioread16(ioaddr + MACCtrl0));
+
+	/* Set the timer to check for link beat. */
+	timer_setup(&np->timer, netdev_timer, 0);
+	np->timer.expires = jiffies + 3*HZ;
+	add_timer(&np->timer);
+
+	/* Enable interrupts by setting the interrupt mask. */
+	iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
+
+	return 0;
+}
+
+static void check_duplex(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	int mii_lpa = mdio_read(dev, np->phys[0], MII_LPA);
+	int negotiated = mii_lpa & np->mii_if.advertising;
+	int duplex;
+
+	/* Force media */
+	if (!np->an_enable || mii_lpa == 0xffff) {
+		if (np->mii_if.full_duplex)
+			iowrite16 (ioread16 (ioaddr + MACCtrl0) | EnbFullDuplex,
+				ioaddr + MACCtrl0);
+		return;
+	}
+
+	/* Autonegotiation */
+	duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040;
+	if (np->mii_if.full_duplex != duplex) {
+		np->mii_if.full_duplex = duplex;
+		if (netif_msg_link(np))
+			printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d "
+				   "negotiated capability %4.4x.\n", dev->name,
+				   duplex ? "full" : "half", np->phys[0], negotiated);
+		iowrite16(ioread16(ioaddr + MACCtrl0) | (duplex ? 0x20 : 0), ioaddr + MACCtrl0);
+	}
+}
+
+static void netdev_timer(struct timer_list *t)
+{
+	struct netdev_private *np = from_timer(np, t, timer);
+	struct net_device *dev = np->mii_if.dev;
+	void __iomem *ioaddr = np->base;
+	int next_tick = 10*HZ;
+
+	if (netif_msg_timer(np)) {
+		printk(KERN_DEBUG "%s: Media selection timer tick, intr status %4.4x, "
+			   "Tx %x Rx %x.\n",
+			   dev->name, ioread16(ioaddr + IntrEnable),
+			   ioread8(ioaddr + TxStatus), ioread32(ioaddr + RxStatus));
+	}
+	check_duplex(dev);
+	np->timer.expires = jiffies + next_tick;
+	add_timer(&np->timer);
+}
+
+static void tx_timeout(struct net_device *dev, unsigned int txqueue)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	unsigned long flag;
+
+	netif_stop_queue(dev);
+	tasklet_disable_in_atomic(&np->tx_tasklet);
+	iowrite16(0, ioaddr + IntrEnable);
+	printk(KERN_WARNING "%s: Transmit timed out, TxStatus %2.2x "
+		   "TxFrameId %2.2x,"
+		   " resetting...\n", dev->name, ioread8(ioaddr + TxStatus),
+		   ioread8(ioaddr + TxFrameId));
+
+	{
+		int i;
+		for (i=0; i<TX_RING_SIZE; i++) {
+			printk(KERN_DEBUG "%02x %08llx %08x %08x(%02x) %08x %08x\n", i,
+				(unsigned long long)(np->tx_ring_dma + i*sizeof(*np->tx_ring)),
+				le32_to_cpu(np->tx_ring[i].next_desc),
+				le32_to_cpu(np->tx_ring[i].status),
+				(le32_to_cpu(np->tx_ring[i].status) >> 2) & 0xff,
+				le32_to_cpu(np->tx_ring[i].frag.addr),
+				le32_to_cpu(np->tx_ring[i].frag.length));
+		}
+		printk(KERN_DEBUG "TxListPtr=%08x netif_queue_stopped=%d\n",
+			ioread32(np->base + TxListPtr),
+			netif_queue_stopped(dev));
+		printk(KERN_DEBUG "cur_tx=%d(%02x) dirty_tx=%d(%02x)\n",
+			np->cur_tx, np->cur_tx % TX_RING_SIZE,
+			np->dirty_tx, np->dirty_tx % TX_RING_SIZE);
+		printk(KERN_DEBUG "cur_rx=%d dirty_rx=%d\n", np->cur_rx, np->dirty_rx);
+		printk(KERN_DEBUG "cur_task=%d\n", np->cur_task);
+	}
+	spin_lock_irqsave(&np->lock, flag);
+
+	/* Stop and restart the chip's Tx processes . */
+	reset_tx(dev);
+	spin_unlock_irqrestore(&np->lock, flag);
+
+	dev->if_port = 0;
+
+	netif_trans_update(dev); /* prevent tx timeout */
+	dev->stats.tx_errors++;
+	if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
+		netif_wake_queue(dev);
+	}
+	iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
+	tasklet_enable(&np->tx_tasklet);
+}
+
+
+/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
+static void init_ring(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int i;
+
+	np->cur_rx = np->cur_tx = 0;
+	np->dirty_rx = np->dirty_tx = 0;
+	np->cur_task = 0;
+
+	np->rx_buf_sz = (dev->mtu <= 1520 ? PKT_BUF_SZ : dev->mtu + 16);
+
+	/* Initialize all Rx descriptors. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		np->rx_ring[i].next_desc = cpu_to_le32(np->rx_ring_dma +
+			((i+1)%RX_RING_SIZE)*sizeof(*np->rx_ring));
+		np->rx_ring[i].status = 0;
+		np->rx_ring[i].frag.length = 0;
+		np->rx_skbuff[i] = NULL;
+	}
+
+	/* Fill in the Rx buffers.  Handle allocation failure gracefully. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		struct sk_buff *skb =
+			netdev_alloc_skb(dev, np->rx_buf_sz + 2);
+		np->rx_skbuff[i] = skb;
+		if (skb == NULL)
+			break;
+		skb_reserve(skb, 2);	/* 16 byte align the IP header. */
+		np->rx_ring[i].frag.addr = cpu_to_le32(
+			dma_map_single(&np->pci_dev->dev, skb->data,
+				np->rx_buf_sz, DMA_FROM_DEVICE));
+		if (dma_mapping_error(&np->pci_dev->dev,
+					np->rx_ring[i].frag.addr)) {
+			dev_kfree_skb(skb);
+			np->rx_skbuff[i] = NULL;
+			break;
+		}
+		np->rx_ring[i].frag.length = cpu_to_le32(np->rx_buf_sz | LastFrag);
+	}
+	np->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
+
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		np->tx_skbuff[i] = NULL;
+		np->tx_ring[i].status = 0;
+	}
+}
+
+static void tx_poll(struct tasklet_struct *t)
+{
+	struct netdev_private *np = from_tasklet(np, t, tx_tasklet);
+	unsigned head = np->cur_task % TX_RING_SIZE;
+	struct netdev_desc *txdesc =
+		&np->tx_ring[(np->cur_tx - 1) % TX_RING_SIZE];
+
+	/* Chain the next pointer */
+	for (; np->cur_tx - np->cur_task > 0; np->cur_task++) {
+		int entry = np->cur_task % TX_RING_SIZE;
+		txdesc = &np->tx_ring[entry];
+		if (np->last_tx) {
+			np->last_tx->next_desc = cpu_to_le32(np->tx_ring_dma +
+				entry*sizeof(struct netdev_desc));
+		}
+		np->last_tx = txdesc;
+	}
+	/* Indicate the latest descriptor of tx ring */
+	txdesc->status |= cpu_to_le32(DescIntrOnTx);
+
+	if (ioread32 (np->base + TxListPtr) == 0)
+		iowrite32 (np->tx_ring_dma + head * sizeof(struct netdev_desc),
+			np->base + TxListPtr);
+}
+
+static netdev_tx_t
+start_tx (struct sk_buff *skb, struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	struct netdev_desc *txdesc;
+	unsigned entry;
+
+	/* Calculate the next Tx descriptor entry. */
+	entry = np->cur_tx % TX_RING_SIZE;
+	np->tx_skbuff[entry] = skb;
+	txdesc = &np->tx_ring[entry];
+
+	txdesc->next_desc = 0;
+	txdesc->status = cpu_to_le32 ((entry << 2) | DisableAlign);
+	txdesc->frag.addr = cpu_to_le32(dma_map_single(&np->pci_dev->dev,
+				skb->data, skb->len, DMA_TO_DEVICE));
+	if (dma_mapping_error(&np->pci_dev->dev,
+				txdesc->frag.addr))
+			goto drop_frame;
+	txdesc->frag.length = cpu_to_le32 (skb->len | LastFrag);
+
+	/* Increment cur_tx before tasklet_schedule() */
+	np->cur_tx++;
+	mb();
+	/* Schedule a tx_poll() task */
+	tasklet_schedule(&np->tx_tasklet);
+
+	/* On some architectures: explicitly flush cache lines here. */
+	if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 1 &&
+	    !netif_queue_stopped(dev)) {
+		/* do nothing */
+	} else {
+		netif_stop_queue (dev);
+	}
+	if (netif_msg_tx_queued(np)) {
+		printk (KERN_DEBUG
+			"%s: Transmit frame #%d queued in slot %d.\n",
+			dev->name, np->cur_tx, entry);
+	}
+	return NETDEV_TX_OK;
+
+drop_frame:
+	dev_kfree_skb_any(skb);
+	np->tx_skbuff[entry] = NULL;
+	dev->stats.tx_dropped++;
+	return NETDEV_TX_OK;
+}
+
+/* Reset hardware tx and free all of tx buffers */
+static int
+reset_tx (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	struct sk_buff *skb;
+	int i;
+
+	/* Reset tx logic, TxListPtr will be cleaned */
+	iowrite16 (TxDisable, ioaddr + MACCtrl1);
+	sundance_reset(dev, (NetworkReset|FIFOReset|DMAReset|TxReset) << 16);
+
+	/* free all tx skbuff */
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		np->tx_ring[i].next_desc = 0;
+
+		skb = np->tx_skbuff[i];
+		if (skb) {
+			dma_unmap_single(&np->pci_dev->dev,
+				le32_to_cpu(np->tx_ring[i].frag.addr),
+				skb->len, DMA_TO_DEVICE);
+			dev_kfree_skb_any(skb);
+			np->tx_skbuff[i] = NULL;
+			dev->stats.tx_dropped++;
+		}
+	}
+	np->cur_tx = np->dirty_tx = 0;
+	np->cur_task = 0;
+
+	np->last_tx = NULL;
+	iowrite8(127, ioaddr + TxDMAPollPeriod);
+
+	iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
+	return 0;
+}
+
+/* The interrupt handler cleans up after the Tx thread,
+   and schedule a Rx thread work */
+static irqreturn_t intr_handler(int irq, void *dev_instance)
+{
+	struct net_device *dev = (struct net_device *)dev_instance;
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	int hw_frame_id;
+	int tx_cnt;
+	int tx_status;
+	int handled = 0;
+	int i;
+
+	do {
+		int intr_status = ioread16(ioaddr + IntrStatus);
+		iowrite16(intr_status, ioaddr + IntrStatus);
+
+		if (netif_msg_intr(np))
+			printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n",
+				   dev->name, intr_status);
+
+		if (!(intr_status & DEFAULT_INTR))
+			break;
+
+		handled = 1;
+
+		if (intr_status & (IntrRxDMADone)) {
+			iowrite16(DEFAULT_INTR & ~(IntrRxDone|IntrRxDMADone),
+					ioaddr + IntrEnable);
+			if (np->budget < 0)
+				np->budget = RX_BUDGET;
+			tasklet_schedule(&np->rx_tasklet);
+		}
+		if (intr_status & (IntrTxDone | IntrDrvRqst)) {
+			tx_status = ioread16 (ioaddr + TxStatus);
+			for (tx_cnt=32; tx_status & 0x80; --tx_cnt) {
+				if (netif_msg_tx_done(np))
+					printk
+					    ("%s: Transmit status is %2.2x.\n",
+				     	dev->name, tx_status);
+				if (tx_status & 0x1e) {
+					if (netif_msg_tx_err(np))
+						printk("%s: Transmit error status %4.4x.\n",
+							   dev->name, tx_status);
+					dev->stats.tx_errors++;
+					if (tx_status & 0x10)
+						dev->stats.tx_fifo_errors++;
+					if (tx_status & 0x08)
+						dev->stats.collisions++;
+					if (tx_status & 0x04)
+						dev->stats.tx_fifo_errors++;
+					if (tx_status & 0x02)
+						dev->stats.tx_window_errors++;
+
+					/*
+					** This reset has been verified on
+					** DFE-580TX boards ! phdm@macqel.be.
+					*/
+					if (tx_status & 0x10) {	/* TxUnderrun */
+						/* Restart Tx FIFO and transmitter */
+						sundance_reset(dev, (NetworkReset|FIFOReset|TxReset) << 16);
+						/* No need to reset the Tx pointer here */
+					}
+					/* Restart the Tx. Need to make sure tx enabled */
+					i = 10;
+					do {
+						iowrite16(ioread16(ioaddr + MACCtrl1) | TxEnable, ioaddr + MACCtrl1);
+						if (ioread16(ioaddr + MACCtrl1) & TxEnabled)
+							break;
+						mdelay(1);
+					} while (--i);
+				}
+				/* Yup, this is a documentation bug.  It cost me *hours*. */
+				iowrite16 (0, ioaddr + TxStatus);
+				if (tx_cnt < 0) {
+					iowrite32(5000, ioaddr + DownCounter);
+					break;
+				}
+				tx_status = ioread16 (ioaddr + TxStatus);
+			}
+			hw_frame_id = (tx_status >> 8) & 0xff;
+		} else 	{
+			hw_frame_id = ioread8(ioaddr + TxFrameId);
+		}
+
+		if (np->pci_dev->revision >= 0x14) {
+			spin_lock(&np->lock);
+			for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
+				int entry = np->dirty_tx % TX_RING_SIZE;
+				struct sk_buff *skb;
+				int sw_frame_id;
+				sw_frame_id = (le32_to_cpu(
+					np->tx_ring[entry].status) >> 2) & 0xff;
+				if (sw_frame_id == hw_frame_id &&
+					!(le32_to_cpu(np->tx_ring[entry].status)
+					& 0x00010000))
+						break;
+				if (sw_frame_id == (hw_frame_id + 1) %
+					TX_RING_SIZE)
+						break;
+				skb = np->tx_skbuff[entry];
+				/* Free the original skb. */
+				dma_unmap_single(&np->pci_dev->dev,
+					le32_to_cpu(np->tx_ring[entry].frag.addr),
+					skb->len, DMA_TO_DEVICE);
+				dev_consume_skb_irq(np->tx_skbuff[entry]);
+				np->tx_skbuff[entry] = NULL;
+				np->tx_ring[entry].frag.addr = 0;
+				np->tx_ring[entry].frag.length = 0;
+			}
+			spin_unlock(&np->lock);
+		} else {
+			spin_lock(&np->lock);
+			for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
+				int entry = np->dirty_tx % TX_RING_SIZE;
+				struct sk_buff *skb;
+				if (!(le32_to_cpu(np->tx_ring[entry].status)
+							& 0x00010000))
+					break;
+				skb = np->tx_skbuff[entry];
+				/* Free the original skb. */
+				dma_unmap_single(&np->pci_dev->dev,
+					le32_to_cpu(np->tx_ring[entry].frag.addr),
+					skb->len, DMA_TO_DEVICE);
+				dev_consume_skb_irq(np->tx_skbuff[entry]);
+				np->tx_skbuff[entry] = NULL;
+				np->tx_ring[entry].frag.addr = 0;
+				np->tx_ring[entry].frag.length = 0;
+			}
+			spin_unlock(&np->lock);
+		}
+
+		if (netif_queue_stopped(dev) &&
+			np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
+			/* The ring is no longer full, clear busy flag. */
+			netif_wake_queue (dev);
+		}
+		/* Abnormal error summary/uncommon events handlers. */
+		if (intr_status & (IntrPCIErr | LinkChange | StatsMax))
+			netdev_error(dev, intr_status);
+	} while (0);
+	if (netif_msg_intr(np))
+		printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
+			   dev->name, ioread16(ioaddr + IntrStatus));
+	return IRQ_RETVAL(handled);
+}
+
+static void rx_poll(struct tasklet_struct *t)
+{
+	struct netdev_private *np = from_tasklet(np, t, rx_tasklet);
+	struct net_device *dev = np->ndev;
+	int entry = np->cur_rx % RX_RING_SIZE;
+	int boguscnt = np->budget;
+	void __iomem *ioaddr = np->base;
+	int received = 0;
+
+	/* If EOP is set on the next entry, it's a new packet. Send it up. */
+	while (1) {
+		struct netdev_desc *desc = &(np->rx_ring[entry]);
+		u32 frame_status = le32_to_cpu(desc->status);
+		int pkt_len;
+
+		if (--boguscnt < 0) {
+			goto not_done;
+		}
+		if (!(frame_status & DescOwn))
+			break;
+		pkt_len = frame_status & 0x1fff;	/* Chip omits the CRC. */
+		if (netif_msg_rx_status(np))
+			printk(KERN_DEBUG "  netdev_rx() status was %8.8x.\n",
+				   frame_status);
+		if (frame_status & 0x001f4000) {
+			/* There was a error. */
+			if (netif_msg_rx_err(np))
+				printk(KERN_DEBUG "  netdev_rx() Rx error was %8.8x.\n",
+					   frame_status);
+			dev->stats.rx_errors++;
+			if (frame_status & 0x00100000)
+				dev->stats.rx_length_errors++;
+			if (frame_status & 0x00010000)
+				dev->stats.rx_fifo_errors++;
+			if (frame_status & 0x00060000)
+				dev->stats.rx_frame_errors++;
+			if (frame_status & 0x00080000)
+				dev->stats.rx_crc_errors++;
+			if (frame_status & 0x00100000) {
+				printk(KERN_WARNING "%s: Oversized Ethernet frame,"
+					   " status %8.8x.\n",
+					   dev->name, frame_status);
+			}
+		} else {
+			struct sk_buff *skb;
+#ifndef final_version
+			if (netif_msg_rx_status(np))
+				printk(KERN_DEBUG "  netdev_rx() normal Rx pkt length %d"
+					   ", bogus_cnt %d.\n",
+					   pkt_len, boguscnt);
+#endif
+			/* Check if the packet is long enough to accept without copying
+			   to a minimally-sized skbuff. */
+			if (pkt_len < rx_copybreak &&
+			    (skb = netdev_alloc_skb(dev, pkt_len + 2)) != NULL) {
+				skb_reserve(skb, 2);	/* 16 byte align the IP header */
+				dma_sync_single_for_cpu(&np->pci_dev->dev,
+						le32_to_cpu(desc->frag.addr),
+						np->rx_buf_sz, DMA_FROM_DEVICE);
+				skb_copy_to_linear_data(skb, np->rx_skbuff[entry]->data, pkt_len);
+				dma_sync_single_for_device(&np->pci_dev->dev,
+						le32_to_cpu(desc->frag.addr),
+						np->rx_buf_sz, DMA_FROM_DEVICE);
+				skb_put(skb, pkt_len);
+			} else {
+				dma_unmap_single(&np->pci_dev->dev,
+					le32_to_cpu(desc->frag.addr),
+					np->rx_buf_sz, DMA_FROM_DEVICE);
+				skb_put(skb = np->rx_skbuff[entry], pkt_len);
+				np->rx_skbuff[entry] = NULL;
+			}
+			skb->protocol = eth_type_trans(skb, dev);
+			/* Note: checksum -> skb->ip_summed = CHECKSUM_UNNECESSARY; */
+			netif_rx(skb);
+		}
+		entry = (entry + 1) % RX_RING_SIZE;
+		received++;
+	}
+	np->cur_rx = entry;
+	refill_rx (dev);
+	np->budget -= received;
+	iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
+	return;
+
+not_done:
+	np->cur_rx = entry;
+	refill_rx (dev);
+	if (!received)
+		received = 1;
+	np->budget -= received;
+	if (np->budget <= 0)
+		np->budget = RX_BUDGET;
+	tasklet_schedule(&np->rx_tasklet);
+}
+
+static void refill_rx (struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int entry;
+	int cnt = 0;
+
+	/* Refill the Rx ring buffers. */
+	for (;(np->cur_rx - np->dirty_rx + RX_RING_SIZE) % RX_RING_SIZE > 0;
+		np->dirty_rx = (np->dirty_rx + 1) % RX_RING_SIZE) {
+		struct sk_buff *skb;
+		entry = np->dirty_rx % RX_RING_SIZE;
+		if (np->rx_skbuff[entry] == NULL) {
+			skb = netdev_alloc_skb(dev, np->rx_buf_sz + 2);
+			np->rx_skbuff[entry] = skb;
+			if (skb == NULL)
+				break;		/* Better luck next round. */
+			skb_reserve(skb, 2);	/* Align IP on 16 byte boundaries */
+			np->rx_ring[entry].frag.addr = cpu_to_le32(
+				dma_map_single(&np->pci_dev->dev, skb->data,
+					np->rx_buf_sz, DMA_FROM_DEVICE));
+			if (dma_mapping_error(&np->pci_dev->dev,
+				    np->rx_ring[entry].frag.addr)) {
+			    dev_kfree_skb_irq(skb);
+			    np->rx_skbuff[entry] = NULL;
+			    break;
+			}
+		}
+		/* Perhaps we need not reset this field. */
+		np->rx_ring[entry].frag.length =
+			cpu_to_le32(np->rx_buf_sz | LastFrag);
+		np->rx_ring[entry].status = 0;
+		cnt++;
+	}
+}
+static void netdev_error(struct net_device *dev, int intr_status)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	u16 mii_ctl, mii_advertise, mii_lpa;
+	int speed;
+
+	if (intr_status & LinkChange) {
+		if (mdio_wait_link(dev, 10) == 0) {
+			printk(KERN_INFO "%s: Link up\n", dev->name);
+			if (np->an_enable) {
+				mii_advertise = mdio_read(dev, np->phys[0],
+							   MII_ADVERTISE);
+				mii_lpa = mdio_read(dev, np->phys[0], MII_LPA);
+				mii_advertise &= mii_lpa;
+				printk(KERN_INFO "%s: Link changed: ",
+					dev->name);
+				if (mii_advertise & ADVERTISE_100FULL) {
+					np->speed = 100;
+					printk("100Mbps, full duplex\n");
+				} else if (mii_advertise & ADVERTISE_100HALF) {
+					np->speed = 100;
+					printk("100Mbps, half duplex\n");
+				} else if (mii_advertise & ADVERTISE_10FULL) {
+					np->speed = 10;
+					printk("10Mbps, full duplex\n");
+				} else if (mii_advertise & ADVERTISE_10HALF) {
+					np->speed = 10;
+					printk("10Mbps, half duplex\n");
+				} else
+					printk("\n");
+
+			} else {
+				mii_ctl = mdio_read(dev, np->phys[0], MII_BMCR);
+				speed = (mii_ctl & BMCR_SPEED100) ? 100 : 10;
+				np->speed = speed;
+				printk(KERN_INFO "%s: Link changed: %dMbps ,",
+					dev->name, speed);
+				printk("%s duplex.\n",
+					(mii_ctl & BMCR_FULLDPLX) ?
+						"full" : "half");
+			}
+			check_duplex(dev);
+			if (np->flowctrl && np->mii_if.full_duplex) {
+				iowrite16(ioread16(ioaddr + MulticastFilter1+2) | 0x0200,
+					ioaddr + MulticastFilter1+2);
+				iowrite16(ioread16(ioaddr + MACCtrl0) | EnbFlowCtrl,
+					ioaddr + MACCtrl0);
+			}
+			netif_carrier_on(dev);
+		} else {
+			printk(KERN_INFO "%s: Link down\n", dev->name);
+			netif_carrier_off(dev);
+		}
+	}
+	if (intr_status & StatsMax) {
+		get_stats(dev);
+	}
+	if (intr_status & IntrPCIErr) {
+		printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n",
+			   dev->name, intr_status);
+		/* We must do a global reset of DMA to continue. */
+	}
+}
+
+static struct net_device_stats *get_stats(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	unsigned long flags;
+	u8 late_coll, single_coll, mult_coll;
+
+	spin_lock_irqsave(&np->statlock, flags);
+	/* The chip only need report frame silently dropped. */
+	dev->stats.rx_missed_errors	+= ioread8(ioaddr + RxMissed);
+	dev->stats.tx_packets += ioread16(ioaddr + TxFramesOK);
+	dev->stats.rx_packets += ioread16(ioaddr + RxFramesOK);
+	dev->stats.tx_carrier_errors += ioread8(ioaddr + StatsCarrierError);
+
+	mult_coll = ioread8(ioaddr + StatsMultiColl);
+	np->xstats.tx_multiple_collisions += mult_coll;
+	single_coll = ioread8(ioaddr + StatsOneColl);
+	np->xstats.tx_single_collisions += single_coll;
+	late_coll = ioread8(ioaddr + StatsLateColl);
+	np->xstats.tx_late_collisions += late_coll;
+	dev->stats.collisions += mult_coll
+		+ single_coll
+		+ late_coll;
+
+	np->xstats.tx_deferred += ioread8(ioaddr + StatsTxDefer);
+	np->xstats.tx_deferred_excessive += ioread8(ioaddr + StatsTxXSDefer);
+	np->xstats.tx_aborted += ioread8(ioaddr + StatsTxAbort);
+	np->xstats.tx_bcasts += ioread8(ioaddr + StatsBcastTx);
+	np->xstats.rx_bcasts += ioread8(ioaddr + StatsBcastRx);
+	np->xstats.tx_mcasts += ioread8(ioaddr + StatsMcastTx);
+	np->xstats.rx_mcasts += ioread8(ioaddr + StatsMcastRx);
+
+	dev->stats.tx_bytes += ioread16(ioaddr + TxOctetsLow);
+	dev->stats.tx_bytes += ioread16(ioaddr + TxOctetsHigh) << 16;
+	dev->stats.rx_bytes += ioread16(ioaddr + RxOctetsLow);
+	dev->stats.rx_bytes += ioread16(ioaddr + RxOctetsHigh) << 16;
+
+	spin_unlock_irqrestore(&np->statlock, flags);
+
+	return &dev->stats;
+}
+
+static void set_rx_mode(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	u16 mc_filter[4];			/* Multicast hash filter */
+	u32 rx_mode;
+	int i;
+
+	if (dev->flags & IFF_PROMISC) {			/* Set promiscuous. */
+		memset(mc_filter, 0xff, sizeof(mc_filter));
+		rx_mode = AcceptBroadcast | AcceptMulticast | AcceptAll | AcceptMyPhys;
+	} else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
+		   (dev->flags & IFF_ALLMULTI)) {
+		/* Too many to match, or accept all multicasts. */
+		memset(mc_filter, 0xff, sizeof(mc_filter));
+		rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
+	} else if (!netdev_mc_empty(dev)) {
+		struct netdev_hw_addr *ha;
+		int bit;
+		int index;
+		int crc;
+		memset (mc_filter, 0, sizeof (mc_filter));
+		netdev_for_each_mc_addr(ha, dev) {
+			crc = ether_crc_le(ETH_ALEN, ha->addr);
+			for (index=0, bit=0; bit < 6; bit++, crc <<= 1)
+				if (crc & 0x80000000) index |= 1 << bit;
+			mc_filter[index/16] |= (1 << (index % 16));
+		}
+		rx_mode = AcceptBroadcast | AcceptMultiHash | AcceptMyPhys;
+	} else {
+		iowrite8(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode);
+		return;
+	}
+	if (np->mii_if.full_duplex && np->flowctrl)
+		mc_filter[3] |= 0x0200;
+
+	for (i = 0; i < 4; i++)
+		iowrite16(mc_filter[i], ioaddr + MulticastFilter0 + i*2);
+	iowrite8(rx_mode, ioaddr + RxMode);
+}
+
+static int __set_mac_addr(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	u16 addr16;
+
+	addr16 = (dev->dev_addr[0] | (dev->dev_addr[1] << 8));
+	iowrite16(addr16, np->base + StationAddr);
+	addr16 = (dev->dev_addr[2] | (dev->dev_addr[3] << 8));
+	iowrite16(addr16, np->base + StationAddr+2);
+	addr16 = (dev->dev_addr[4] | (dev->dev_addr[5] << 8));
+	iowrite16(addr16, np->base + StationAddr+4);
+	return 0;
+}
+
+/* Invoked with rtnl_lock held */
+static int sundance_set_mac_addr(struct net_device *dev, void *data)
+{
+	const struct sockaddr *addr = data;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+	eth_hw_addr_set(dev, addr->sa_data);
+	__set_mac_addr(dev);
+
+	return 0;
+}
+
+static const struct {
+	const char name[ETH_GSTRING_LEN];
+} sundance_stats[] = {
+	{ "tx_multiple_collisions" },
+	{ "tx_single_collisions" },
+	{ "tx_late_collisions" },
+	{ "tx_deferred" },
+	{ "tx_deferred_excessive" },
+	{ "tx_aborted" },
+	{ "tx_bcasts" },
+	{ "rx_bcasts" },
+	{ "tx_mcasts" },
+	{ "rx_mcasts" },
+};
+
+static int check_if_running(struct net_device *dev)
+{
+	if (!netif_running(dev))
+		return -EINVAL;
+	return 0;
+}
+
+static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	strscpy(info->driver, DRV_NAME, sizeof(info->driver));
+	strscpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
+}
+
+static int get_link_ksettings(struct net_device *dev,
+			      struct ethtool_link_ksettings *cmd)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	spin_lock_irq(&np->lock);
+	mii_ethtool_get_link_ksettings(&np->mii_if, cmd);
+	spin_unlock_irq(&np->lock);
+	return 0;
+}
+
+static int set_link_ksettings(struct net_device *dev,
+			      const struct ethtool_link_ksettings *cmd)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int res;
+	spin_lock_irq(&np->lock);
+	res = mii_ethtool_set_link_ksettings(&np->mii_if, cmd);
+	spin_unlock_irq(&np->lock);
+	return res;
+}
+
+static int nway_reset(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	return mii_nway_restart(&np->mii_if);
+}
+
+static u32 get_link(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	return mii_link_ok(&np->mii_if);
+}
+
+static u32 get_msglevel(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	return np->msg_enable;
+}
+
+static void set_msglevel(struct net_device *dev, u32 val)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	np->msg_enable = val;
+}
+
+static void get_strings(struct net_device *dev, u32 stringset,
+		u8 *data)
+{
+	if (stringset == ETH_SS_STATS)
+		memcpy(data, sundance_stats, sizeof(sundance_stats));
+}
+
+static int get_sset_count(struct net_device *dev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_STATS:
+		return ARRAY_SIZE(sundance_stats);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void get_ethtool_stats(struct net_device *dev,
+		struct ethtool_stats *stats, u64 *data)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int i = 0;
+
+	get_stats(dev);
+	data[i++] = np->xstats.tx_multiple_collisions;
+	data[i++] = np->xstats.tx_single_collisions;
+	data[i++] = np->xstats.tx_late_collisions;
+	data[i++] = np->xstats.tx_deferred;
+	data[i++] = np->xstats.tx_deferred_excessive;
+	data[i++] = np->xstats.tx_aborted;
+	data[i++] = np->xstats.tx_bcasts;
+	data[i++] = np->xstats.rx_bcasts;
+	data[i++] = np->xstats.tx_mcasts;
+	data[i++] = np->xstats.rx_mcasts;
+}
+
+#ifdef CONFIG_PM
+
+static void sundance_get_wol(struct net_device *dev,
+		struct ethtool_wolinfo *wol)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	u8 wol_bits;
+
+	wol->wolopts = 0;
+
+	wol->supported = (WAKE_PHY | WAKE_MAGIC);
+	if (!np->wol_enabled)
+		return;
+
+	wol_bits = ioread8(ioaddr + WakeEvent);
+	if (wol_bits & MagicPktEnable)
+		wol->wolopts |= WAKE_MAGIC;
+	if (wol_bits & LinkEventEnable)
+		wol->wolopts |= WAKE_PHY;
+}
+
+static int sundance_set_wol(struct net_device *dev,
+	struct ethtool_wolinfo *wol)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	u8 wol_bits;
+
+	if (!device_can_wakeup(&np->pci_dev->dev))
+		return -EOPNOTSUPP;
+
+	np->wol_enabled = !!(wol->wolopts);
+	wol_bits = ioread8(ioaddr + WakeEvent);
+	wol_bits &= ~(WakePktEnable | MagicPktEnable |
+			LinkEventEnable | WolEnable);
+
+	if (np->wol_enabled) {
+		if (wol->wolopts & WAKE_MAGIC)
+			wol_bits |= (MagicPktEnable | WolEnable);
+		if (wol->wolopts & WAKE_PHY)
+			wol_bits |= (LinkEventEnable | WolEnable);
+	}
+	iowrite8(wol_bits, ioaddr + WakeEvent);
+
+	device_set_wakeup_enable(&np->pci_dev->dev, np->wol_enabled);
+
+	return 0;
+}
+#else
+#define sundance_get_wol NULL
+#define sundance_set_wol NULL
+#endif /* CONFIG_PM */
+
+static const struct ethtool_ops ethtool_ops = {
+	.begin = check_if_running,
+	.get_drvinfo = get_drvinfo,
+	.nway_reset = nway_reset,
+	.get_link = get_link,
+	.get_wol = sundance_get_wol,
+	.set_wol = sundance_set_wol,
+	.get_msglevel = get_msglevel,
+	.set_msglevel = set_msglevel,
+	.get_strings = get_strings,
+	.get_sset_count = get_sset_count,
+	.get_ethtool_stats = get_ethtool_stats,
+	.get_link_ksettings = get_link_ksettings,
+	.set_link_ksettings = set_link_ksettings,
+};
+
+static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int rc;
+
+	if (!netif_running(dev))
+		return -EINVAL;
+
+	spin_lock_irq(&np->lock);
+	rc = generic_mii_ioctl(&np->mii_if, if_mii(rq), cmd, NULL);
+	spin_unlock_irq(&np->lock);
+
+	return rc;
+}
+
+static int netdev_close(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+	struct sk_buff *skb;
+	int i;
+
+	/* Wait and kill tasklet */
+	tasklet_kill(&np->rx_tasklet);
+	tasklet_kill(&np->tx_tasklet);
+	np->cur_tx = 0;
+	np->dirty_tx = 0;
+	np->cur_task = 0;
+	np->last_tx = NULL;
+
+	netif_stop_queue(dev);
+
+	if (netif_msg_ifdown(np)) {
+		printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %2.2x "
+			   "Rx %4.4x Int %2.2x.\n",
+			   dev->name, ioread8(ioaddr + TxStatus),
+			   ioread32(ioaddr + RxStatus), ioread16(ioaddr + IntrStatus));
+		printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d,  Rx %d / %d.\n",
+			   dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx);
+	}
+
+	/* Disable interrupts by clearing the interrupt mask. */
+	iowrite16(0x0000, ioaddr + IntrEnable);
+
+	/* Disable Rx and Tx DMA for safely release resource */
+	iowrite32(0x500, ioaddr + DMACtrl);
+
+	/* Stop the chip's Tx and Rx processes. */
+	iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1);
+
+	for (i = 2000; i > 0; i--) {
+		if ((ioread32(ioaddr + DMACtrl) & 0xc000) == 0)
+			break;
+		mdelay(1);
+	}
+
+	iowrite16(GlobalReset | DMAReset | FIFOReset | NetworkReset,
+			ioaddr + ASIC_HI_WORD(ASICCtrl));
+
+	for (i = 2000; i > 0; i--) {
+		if ((ioread16(ioaddr + ASIC_HI_WORD(ASICCtrl)) & ResetBusy) == 0)
+			break;
+		mdelay(1);
+	}
+
+#ifdef __i386__
+	if (netif_msg_hw(np)) {
+		printk(KERN_DEBUG "  Tx ring at %8.8x:\n",
+			   (int)(np->tx_ring_dma));
+		for (i = 0; i < TX_RING_SIZE; i++)
+			printk(KERN_DEBUG " #%d desc. %4.4x %8.8x %8.8x.\n",
+				   i, np->tx_ring[i].status, np->tx_ring[i].frag.addr,
+				   np->tx_ring[i].frag.length);
+		printk(KERN_DEBUG "  Rx ring %8.8x:\n",
+			   (int)(np->rx_ring_dma));
+		for (i = 0; i < /*RX_RING_SIZE*/4 ; i++) {
+			printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n",
+				   i, np->rx_ring[i].status, np->rx_ring[i].frag.addr,
+				   np->rx_ring[i].frag.length);
+		}
+	}
+#endif /* __i386__ debugging only */
+
+	free_irq(np->pci_dev->irq, dev);
+
+	del_timer_sync(&np->timer);
+
+	/* Free all the skbuffs in the Rx queue. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		np->rx_ring[i].status = 0;
+		skb = np->rx_skbuff[i];
+		if (skb) {
+			dma_unmap_single(&np->pci_dev->dev,
+				le32_to_cpu(np->rx_ring[i].frag.addr),
+				np->rx_buf_sz, DMA_FROM_DEVICE);
+			dev_kfree_skb(skb);
+			np->rx_skbuff[i] = NULL;
+		}
+		np->rx_ring[i].frag.addr = cpu_to_le32(0xBADF00D0); /* poison */
+	}
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		np->tx_ring[i].next_desc = 0;
+		skb = np->tx_skbuff[i];
+		if (skb) {
+			dma_unmap_single(&np->pci_dev->dev,
+				le32_to_cpu(np->tx_ring[i].frag.addr),
+				skb->len, DMA_TO_DEVICE);
+			dev_kfree_skb(skb);
+			np->tx_skbuff[i] = NULL;
+		}
+	}
+
+	return 0;
+}
+
+static void sundance_remove1(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+
+	if (dev) {
+	    struct netdev_private *np = netdev_priv(dev);
+	    unregister_netdev(dev);
+	    dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE,
+		    np->rx_ring, np->rx_ring_dma);
+	    dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE,
+		    np->tx_ring, np->tx_ring_dma);
+	    pci_iounmap(pdev, np->base);
+	    pci_release_regions(pdev);
+	    free_netdev(dev);
+	}
+}
+
+static int __maybe_unused sundance_suspend(struct device *dev_d)
+{
+	struct net_device *dev = dev_get_drvdata(dev_d);
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->base;
+
+	if (!netif_running(dev))
+		return 0;
+
+	netdev_close(dev);
+	netif_device_detach(dev);
+
+	if (np->wol_enabled) {
+		iowrite8(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode);
+		iowrite16(RxEnable, ioaddr + MACCtrl1);
+	}
+
+	device_set_wakeup_enable(dev_d, np->wol_enabled);
+
+	return 0;
+}
+
+static int __maybe_unused sundance_resume(struct device *dev_d)
+{
+	struct net_device *dev = dev_get_drvdata(dev_d);
+	int err = 0;
+
+	if (!netif_running(dev))
+		return 0;
+
+	err = netdev_open(dev);
+	if (err) {
+		printk(KERN_ERR "%s: Can't resume interface!\n",
+				dev->name);
+		goto out;
+	}
+
+	netif_device_attach(dev);
+
+out:
+	return err;
+}
+
+static SIMPLE_DEV_PM_OPS(sundance_pm_ops, sundance_suspend, sundance_resume);
+
+static struct pci_driver sundance_driver = {
+	.name		= DRV_NAME,
+	.id_table	= sundance_pci_tbl,
+	.probe		= sundance_probe1,
+	.remove		= sundance_remove1,
+	.driver.pm	= &sundance_pm_ops,
+};
+
+module_pci_driver(sundance_driver);