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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/ethernet/via/via-rhine.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/via/via-rhine.c')
-rw-r--r--drivers/net/ethernet/via/via-rhine.c2631
1 files changed, 2631 insertions, 0 deletions
diff --git a/drivers/net/ethernet/via/via-rhine.c b/drivers/net/ethernet/via/via-rhine.c
new file mode 100644
index 000000000..0fb15a17b
--- /dev/null
+++ b/drivers/net/ethernet/via/via-rhine.c
@@ -0,0 +1,2631 @@
+/* via-rhine.c: A Linux Ethernet device driver for VIA Rhine family chips. */
+/*
+ Written 1998-2001 by Donald Becker.
+
+ Current Maintainer: Kevin Brace <kevinbrace@bracecomputerlab.com>
+
+ 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.
+
+ This driver is designed for the VIA VT86C100A Rhine-I.
+ It also works with the Rhine-II (6102) and Rhine-III (6105/6105L/6105LOM
+ and management NIC 6105M).
+
+ The author may be reached as becker@scyld.com, or C/O
+ Scyld Computing Corporation
+ 410 Severn Ave., Suite 210
+ Annapolis MD 21403
+
+
+ This driver contains some changes from the original Donald Becker
+ version. He may or may not be interested in bug reports on this
+ code. You can find his versions at:
+ http://www.scyld.com/network/via-rhine.html
+ [link no longer provides useful info -jgarzik]
+
+*/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define DRV_NAME "via-rhine"
+
+#include <linux/types.h>
+
+/* A few user-configurable values.
+ These may be modified when a driver module is loaded. */
+static int debug = 0;
+#define RHINE_MSG_DEFAULT \
+ (0x0000)
+
+/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
+ Setting to > 1518 effectively disables this feature. */
+#if defined(__alpha__) || defined(__arm__) || defined(__hppa__) || \
+ defined(CONFIG_SPARC) || defined(__ia64__) || \
+ defined(__sh__) || defined(__mips__)
+static int rx_copybreak = 1518;
+#else
+static int rx_copybreak;
+#endif
+
+/* Work-around for broken BIOSes: they are unable to get the chip back out of
+ power state D3 so PXE booting fails. bootparam(7): via-rhine.avoid_D3=1 */
+static bool avoid_D3;
+
+/*
+ * In case you are looking for 'options[]' or 'full_duplex[]', they
+ * are gone. Use ethtool(8) instead.
+ */
+
+/* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
+ The Rhine has a 64 element 8390-like hash table. */
+static const int multicast_filter_limit = 32;
+
+
+/* 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.
+ * With BQL support, we can increase TX ring safely.
+ * There are no ill effects from too-large receive rings.
+ */
+#define TX_RING_SIZE 64
+#define TX_QUEUE_LEN (TX_RING_SIZE - 6) /* Limit ring entries actually used. */
+#define RX_RING_SIZE 64
+
+/* Operational parameters that usually are not changed. */
+
+/* Time in jiffies before concluding the transmitter is hung. */
+#define TX_TIMEOUT (2*HZ)
+
+#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
+
+#include <linux/module.h>
+#include <linux/moduleparam.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/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/crc32.h>
+#include <linux/if_vlan.h>
+#include <linux/bitops.h>
+#include <linux/workqueue.h>
+#include <asm/processor.h> /* Processor type for cache alignment. */
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <linux/uaccess.h>
+#include <linux/dmi.h>
+
+MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
+MODULE_DESCRIPTION("VIA Rhine PCI Fast Ethernet driver");
+MODULE_LICENSE("GPL");
+
+module_param(debug, int, 0);
+module_param(rx_copybreak, int, 0);
+module_param(avoid_D3, bool, 0);
+MODULE_PARM_DESC(debug, "VIA Rhine debug message flags");
+MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames");
+MODULE_PARM_DESC(avoid_D3, "Avoid power state D3 (work-around for broken BIOSes)");
+
+#define MCAM_SIZE 32
+#define VCAM_SIZE 32
+
+/*
+ Theory of Operation
+
+I. Board Compatibility
+
+This driver is designed for the VIA 86c100A Rhine-II PCI Fast Ethernet
+controller.
+
+II. Board-specific settings
+
+Boards with this chip are functional only in a bus-master PCI slot.
+
+Many operational settings are loaded from the EEPROM to the Config word at
+offset 0x78. For most of these settings, this driver assumes that they are
+correct.
+If this driver is compiled to use PCI memory space operations the EEPROM
+must be configured to enable memory ops.
+
+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.
+
+IIIb/c. Transmit/Receive Structure
+
+This driver attempts to use a zero-copy receive and transmit scheme.
+
+Alas, all data buffers are required to start on a 32 bit boundary, so
+the driver must often copy transmit packets into bounce buffers.
+
+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 the last phase of rhine_rx().
+
+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.
+
+Since the VIA chips are only able to transfer data to buffers on 32 bit
+boundaries, the IP header at offset 14 in an ethernet frame isn't
+longword aligned for further processing. Copying these unaligned buffers
+has the beneficial effect of 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
+netdev_priv(dev)->lock spinlock. 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. It locks the
+netdev_priv(dev)->lock whenever it's queuing a Tx packet. If the next slot in
+the ring is not available it stops the transmit queue by
+calling netif_stop_queue.
+
+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. If at least half of the entries in
+the Rx ring are available the transmit queue is woken up if it was stopped.
+
+IV. Notes
+
+IVb. References
+
+Preliminary VT86C100A manual from http://www.via.com.tw/
+http://www.scyld.com/expert/100mbps.html
+http://www.scyld.com/expert/NWay.html
+ftp://ftp.via.com.tw/public/lan/Products/NIC/VT86C100A/Datasheet/VT86C100A03.pdf
+ftp://ftp.via.com.tw/public/lan/Products/NIC/VT6102/Datasheet/VT6102_021.PDF
+
+
+IVc. Errata
+
+The VT86C100A manual is not reliable information.
+The 3043 chip does not handle unaligned transmit or receive buffers, resulting
+in significant performance degradation for bounce buffer copies on transmit
+and unaligned IP headers on receive.
+The chip does not pad to minimum transmit length.
+
+*/
+
+
+/* This table drives the PCI probe routines. It's mostly boilerplate in all
+ of the drivers, and will likely be provided by some future kernel.
+ Note the matching code -- the first table entry matchs all 56** cards but
+ second only the 1234 card.
+*/
+
+enum rhine_revs {
+ VT86C100A = 0x00,
+ VTunknown0 = 0x20,
+ VT6102 = 0x40,
+ VT8231 = 0x50, /* Integrated MAC */
+ VT8233 = 0x60, /* Integrated MAC */
+ VT8235 = 0x74, /* Integrated MAC */
+ VT8237 = 0x78, /* Integrated MAC */
+ VT8251 = 0x7C, /* Integrated MAC */
+ VT6105 = 0x80,
+ VT6105_B0 = 0x83,
+ VT6105L = 0x8A,
+ VT6107 = 0x8C,
+ VTunknown2 = 0x8E,
+ VT6105M = 0x90, /* Management adapter */
+};
+
+enum rhine_quirks {
+ rqWOL = 0x0001, /* Wake-On-LAN support */
+ rqForceReset = 0x0002,
+ rq6patterns = 0x0040, /* 6 instead of 4 patterns for WOL */
+ rqStatusWBRace = 0x0080, /* Tx Status Writeback Error possible */
+ rqRhineI = 0x0100, /* See comment below */
+ rqIntPHY = 0x0200, /* Integrated PHY */
+ rqMgmt = 0x0400, /* Management adapter */
+ rqNeedEnMMIO = 0x0800, /* Whether the core needs to be
+ * switched from PIO mode to MMIO
+ * (only applies to PCI)
+ */
+};
+/*
+ * rqRhineI: VT86C100A (aka Rhine-I) uses different bits to enable
+ * MMIO as well as for the collision counter and the Tx FIFO underflow
+ * indicator. In addition, Tx and Rx buffers need to 4 byte aligned.
+ */
+
+/* Beware of PCI posted writes */
+#define IOSYNC do { ioread8(ioaddr + StationAddr); } while (0)
+
+static const struct pci_device_id rhine_pci_tbl[] = {
+ { 0x1106, 0x3043, PCI_ANY_ID, PCI_ANY_ID, }, /* VT86C100A */
+ { 0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, }, /* VT6102 */
+ { 0x1106, 0x3106, PCI_ANY_ID, PCI_ANY_ID, }, /* 6105{,L,LOM} */
+ { 0x1106, 0x3053, PCI_ANY_ID, PCI_ANY_ID, }, /* VT6105M */
+ { } /* terminate list */
+};
+MODULE_DEVICE_TABLE(pci, rhine_pci_tbl);
+
+/* OpenFirmware identifiers for platform-bus devices
+ * The .data field is currently only used to store quirks
+ */
+static u32 vt8500_quirks = rqWOL | rqForceReset | rq6patterns;
+static const struct of_device_id rhine_of_tbl[] = {
+ { .compatible = "via,vt8500-rhine", .data = &vt8500_quirks },
+ { } /* terminate list */
+};
+MODULE_DEVICE_TABLE(of, rhine_of_tbl);
+
+/* Offsets to the device registers. */
+enum register_offsets {
+ StationAddr=0x00, RxConfig=0x06, TxConfig=0x07, ChipCmd=0x08,
+ ChipCmd1=0x09, TQWake=0x0A,
+ IntrStatus=0x0C, IntrEnable=0x0E,
+ MulticastFilter0=0x10, MulticastFilter1=0x14,
+ RxRingPtr=0x18, TxRingPtr=0x1C, GFIFOTest=0x54,
+ MIIPhyAddr=0x6C, MIIStatus=0x6D, PCIBusConfig=0x6E, PCIBusConfig1=0x6F,
+ MIICmd=0x70, MIIRegAddr=0x71, MIIData=0x72, MACRegEEcsr=0x74,
+ ConfigA=0x78, ConfigB=0x79, ConfigC=0x7A, ConfigD=0x7B,
+ RxMissed=0x7C, RxCRCErrs=0x7E, MiscCmd=0x81,
+ StickyHW=0x83, IntrStatus2=0x84,
+ CamMask=0x88, CamCon=0x92, CamAddr=0x93,
+ WOLcrSet=0xA0, PwcfgSet=0xA1, WOLcgSet=0xA3, WOLcrClr=0xA4,
+ WOLcrClr1=0xA6, WOLcgClr=0xA7,
+ PwrcsrSet=0xA8, PwrcsrSet1=0xA9, PwrcsrClr=0xAC, PwrcsrClr1=0xAD,
+};
+
+/* Bits in ConfigD */
+enum backoff_bits {
+ BackOptional=0x01, BackModify=0x02,
+ BackCaptureEffect=0x04, BackRandom=0x08
+};
+
+/* Bits in the TxConfig (TCR) register */
+enum tcr_bits {
+ TCR_PQEN=0x01,
+ TCR_LB0=0x02, /* loopback[0] */
+ TCR_LB1=0x04, /* loopback[1] */
+ TCR_OFSET=0x08,
+ TCR_RTGOPT=0x10,
+ TCR_RTFT0=0x20,
+ TCR_RTFT1=0x40,
+ TCR_RTSF=0x80,
+};
+
+/* Bits in the CamCon (CAMC) register */
+enum camcon_bits {
+ CAMC_CAMEN=0x01,
+ CAMC_VCAMSL=0x02,
+ CAMC_CAMWR=0x04,
+ CAMC_CAMRD=0x08,
+};
+
+/* Bits in the PCIBusConfig1 (BCR1) register */
+enum bcr1_bits {
+ BCR1_POT0=0x01,
+ BCR1_POT1=0x02,
+ BCR1_POT2=0x04,
+ BCR1_CTFT0=0x08,
+ BCR1_CTFT1=0x10,
+ BCR1_CTSF=0x20,
+ BCR1_TXQNOBK=0x40, /* for VT6105 */
+ BCR1_VIDFR=0x80, /* for VT6105 */
+ BCR1_MED0=0x40, /* for VT6102 */
+ BCR1_MED1=0x80, /* for VT6102 */
+};
+
+/* Registers we check that mmio and reg are the same. */
+static const int mmio_verify_registers[] = {
+ RxConfig, TxConfig, IntrEnable, ConfigA, ConfigB, ConfigC, ConfigD,
+ 0
+};
+
+/* Bits in the interrupt status/mask registers. */
+enum intr_status_bits {
+ IntrRxDone = 0x0001,
+ IntrTxDone = 0x0002,
+ IntrRxErr = 0x0004,
+ IntrTxError = 0x0008,
+ IntrRxEmpty = 0x0020,
+ IntrPCIErr = 0x0040,
+ IntrStatsMax = 0x0080,
+ IntrRxEarly = 0x0100,
+ IntrTxUnderrun = 0x0210,
+ IntrRxOverflow = 0x0400,
+ IntrRxDropped = 0x0800,
+ IntrRxNoBuf = 0x1000,
+ IntrTxAborted = 0x2000,
+ IntrLinkChange = 0x4000,
+ IntrRxWakeUp = 0x8000,
+ IntrTxDescRace = 0x080000, /* mapped from IntrStatus2 */
+ IntrNormalSummary = IntrRxDone | IntrTxDone,
+ IntrTxErrSummary = IntrTxDescRace | IntrTxAborted | IntrTxError |
+ IntrTxUnderrun,
+};
+
+/* Bits in WOLcrSet/WOLcrClr and PwrcsrSet/PwrcsrClr */
+enum wol_bits {
+ WOLucast = 0x10,
+ WOLmagic = 0x20,
+ WOLbmcast = 0x30,
+ WOLlnkon = 0x40,
+ WOLlnkoff = 0x80,
+};
+
+/* The Rx and Tx buffer descriptors. */
+struct rx_desc {
+ __le32 rx_status;
+ __le32 desc_length; /* Chain flag, Buffer/frame length */
+ __le32 addr;
+ __le32 next_desc;
+};
+struct tx_desc {
+ __le32 tx_status;
+ __le32 desc_length; /* Chain flag, Tx Config, Frame length */
+ __le32 addr;
+ __le32 next_desc;
+};
+
+/* Initial value for tx_desc.desc_length, Buffer size goes to bits 0-10 */
+#define TXDESC 0x00e08000
+
+enum rx_status_bits {
+ RxOK=0x8000, RxWholePkt=0x0300, RxErr=0x008F
+};
+
+/* Bits in *_desc.*_status */
+enum desc_status_bits {
+ DescOwn=0x80000000
+};
+
+/* Bits in *_desc.*_length */
+enum desc_length_bits {
+ DescTag=0x00010000
+};
+
+/* Bits in ChipCmd. */
+enum chip_cmd_bits {
+ CmdInit=0x01, CmdStart=0x02, CmdStop=0x04, CmdRxOn=0x08,
+ CmdTxOn=0x10, Cmd1TxDemand=0x20, CmdRxDemand=0x40,
+ Cmd1EarlyRx=0x01, Cmd1EarlyTx=0x02, Cmd1FDuplex=0x04,
+ Cmd1NoTxPoll=0x08, Cmd1Reset=0x80,
+};
+
+struct rhine_stats {
+ u64 packets;
+ u64 bytes;
+ struct u64_stats_sync syncp;
+};
+
+struct rhine_private {
+ /* Bit mask for configured VLAN ids */
+ unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+
+ /* Descriptor rings */
+ struct rx_desc *rx_ring;
+ struct tx_desc *tx_ring;
+ dma_addr_t rx_ring_dma;
+ dma_addr_t tx_ring_dma;
+
+ /* The addresses of receive-in-place skbuffs. */
+ struct sk_buff *rx_skbuff[RX_RING_SIZE];
+ dma_addr_t rx_skbuff_dma[RX_RING_SIZE];
+
+ /* The saved address of a sent-in-place packet/buffer, for later free(). */
+ struct sk_buff *tx_skbuff[TX_RING_SIZE];
+ dma_addr_t tx_skbuff_dma[TX_RING_SIZE];
+
+ /* Tx bounce buffers (Rhine-I only) */
+ unsigned char *tx_buf[TX_RING_SIZE];
+ unsigned char *tx_bufs;
+ dma_addr_t tx_bufs_dma;
+
+ int irq;
+ long pioaddr;
+ struct net_device *dev;
+ struct napi_struct napi;
+ spinlock_t lock;
+ struct mutex task_lock;
+ bool task_enable;
+ struct work_struct slow_event_task;
+ struct work_struct reset_task;
+
+ u32 msg_enable;
+
+ /* Frequently used values: keep some adjacent for cache effect. */
+ u32 quirks;
+ unsigned int cur_rx;
+ unsigned int cur_tx, dirty_tx;
+ unsigned int rx_buf_sz; /* Based on MTU+slack. */
+ struct rhine_stats rx_stats;
+ struct rhine_stats tx_stats;
+ u8 wolopts;
+
+ u8 tx_thresh, rx_thresh;
+
+ struct mii_if_info mii_if;
+ void __iomem *base;
+};
+
+#define BYTE_REG_BITS_ON(x, p) do { iowrite8((ioread8((p))|(x)), (p)); } while (0)
+#define WORD_REG_BITS_ON(x, p) do { iowrite16((ioread16((p))|(x)), (p)); } while (0)
+#define DWORD_REG_BITS_ON(x, p) do { iowrite32((ioread32((p))|(x)), (p)); } while (0)
+
+#define BYTE_REG_BITS_IS_ON(x, p) (ioread8((p)) & (x))
+#define WORD_REG_BITS_IS_ON(x, p) (ioread16((p)) & (x))
+#define DWORD_REG_BITS_IS_ON(x, p) (ioread32((p)) & (x))
+
+#define BYTE_REG_BITS_OFF(x, p) do { iowrite8(ioread8((p)) & (~(x)), (p)); } while (0)
+#define WORD_REG_BITS_OFF(x, p) do { iowrite16(ioread16((p)) & (~(x)), (p)); } while (0)
+#define DWORD_REG_BITS_OFF(x, p) do { iowrite32(ioread32((p)) & (~(x)), (p)); } while (0)
+
+#define BYTE_REG_BITS_SET(x, m, p) do { iowrite8((ioread8((p)) & (~(m)))|(x), (p)); } while (0)
+#define WORD_REG_BITS_SET(x, m, p) do { iowrite16((ioread16((p)) & (~(m)))|(x), (p)); } while (0)
+#define DWORD_REG_BITS_SET(x, m, p) do { iowrite32((ioread32((p)) & (~(m)))|(x), (p)); } while (0)
+
+
+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 rhine_open(struct net_device *dev);
+static void rhine_reset_task(struct work_struct *work);
+static void rhine_slow_event_task(struct work_struct *work);
+static void rhine_tx_timeout(struct net_device *dev, unsigned int txqueue);
+static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
+ struct net_device *dev);
+static irqreturn_t rhine_interrupt(int irq, void *dev_instance);
+static void rhine_tx(struct net_device *dev);
+static int rhine_rx(struct net_device *dev, int limit);
+static void rhine_set_rx_mode(struct net_device *dev);
+static void rhine_get_stats64(struct net_device *dev,
+ struct rtnl_link_stats64 *stats);
+static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static const struct ethtool_ops netdev_ethtool_ops;
+static int rhine_close(struct net_device *dev);
+static int rhine_vlan_rx_add_vid(struct net_device *dev,
+ __be16 proto, u16 vid);
+static int rhine_vlan_rx_kill_vid(struct net_device *dev,
+ __be16 proto, u16 vid);
+static void rhine_restart_tx(struct net_device *dev);
+
+static void rhine_wait_bit(struct rhine_private *rp, u8 reg, u8 mask, bool low)
+{
+ void __iomem *ioaddr = rp->base;
+ int i;
+
+ for (i = 0; i < 1024; i++) {
+ bool has_mask_bits = !!(ioread8(ioaddr + reg) & mask);
+
+ if (low ^ has_mask_bits)
+ break;
+ udelay(10);
+ }
+ if (i > 64) {
+ netif_dbg(rp, hw, rp->dev, "%s bit wait (%02x/%02x) cycle "
+ "count: %04d\n", low ? "low" : "high", reg, mask, i);
+ }
+}
+
+static void rhine_wait_bit_high(struct rhine_private *rp, u8 reg, u8 mask)
+{
+ rhine_wait_bit(rp, reg, mask, false);
+}
+
+static void rhine_wait_bit_low(struct rhine_private *rp, u8 reg, u8 mask)
+{
+ rhine_wait_bit(rp, reg, mask, true);
+}
+
+static u32 rhine_get_events(struct rhine_private *rp)
+{
+ void __iomem *ioaddr = rp->base;
+ u32 intr_status;
+
+ intr_status = ioread16(ioaddr + IntrStatus);
+ /* On Rhine-II, Bit 3 indicates Tx descriptor write-back race. */
+ if (rp->quirks & rqStatusWBRace)
+ intr_status |= ioread8(ioaddr + IntrStatus2) << 16;
+ return intr_status;
+}
+
+static void rhine_ack_events(struct rhine_private *rp, u32 mask)
+{
+ void __iomem *ioaddr = rp->base;
+
+ if (rp->quirks & rqStatusWBRace)
+ iowrite8(mask >> 16, ioaddr + IntrStatus2);
+ iowrite16(mask, ioaddr + IntrStatus);
+}
+
+/*
+ * Get power related registers into sane state.
+ * Notify user about past WOL event.
+ */
+static void rhine_power_init(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+ u16 wolstat;
+
+ if (rp->quirks & rqWOL) {
+ /* Make sure chip is in power state D0 */
+ iowrite8(ioread8(ioaddr + StickyHW) & 0xFC, ioaddr + StickyHW);
+
+ /* Disable "force PME-enable" */
+ iowrite8(0x80, ioaddr + WOLcgClr);
+
+ /* Clear power-event config bits (WOL) */
+ iowrite8(0xFF, ioaddr + WOLcrClr);
+ /* More recent cards can manage two additional patterns */
+ if (rp->quirks & rq6patterns)
+ iowrite8(0x03, ioaddr + WOLcrClr1);
+
+ /* Save power-event status bits */
+ wolstat = ioread8(ioaddr + PwrcsrSet);
+ if (rp->quirks & rq6patterns)
+ wolstat |= (ioread8(ioaddr + PwrcsrSet1) & 0x03) << 8;
+
+ /* Clear power-event status bits */
+ iowrite8(0xFF, ioaddr + PwrcsrClr);
+ if (rp->quirks & rq6patterns)
+ iowrite8(0x03, ioaddr + PwrcsrClr1);
+
+ if (wolstat) {
+ char *reason;
+ switch (wolstat) {
+ case WOLmagic:
+ reason = "Magic packet";
+ break;
+ case WOLlnkon:
+ reason = "Link went up";
+ break;
+ case WOLlnkoff:
+ reason = "Link went down";
+ break;
+ case WOLucast:
+ reason = "Unicast packet";
+ break;
+ case WOLbmcast:
+ reason = "Multicast/broadcast packet";
+ break;
+ default:
+ reason = "Unknown";
+ }
+ netdev_info(dev, "Woke system up. Reason: %s\n",
+ reason);
+ }
+ }
+}
+
+static void rhine_chip_reset(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+ u8 cmd1;
+
+ iowrite8(Cmd1Reset, ioaddr + ChipCmd1);
+ IOSYNC;
+
+ if (ioread8(ioaddr + ChipCmd1) & Cmd1Reset) {
+ netdev_info(dev, "Reset not complete yet. Trying harder.\n");
+
+ /* Force reset */
+ if (rp->quirks & rqForceReset)
+ iowrite8(0x40, ioaddr + MiscCmd);
+
+ /* Reset can take somewhat longer (rare) */
+ rhine_wait_bit_low(rp, ChipCmd1, Cmd1Reset);
+ }
+
+ cmd1 = ioread8(ioaddr + ChipCmd1);
+ netif_info(rp, hw, dev, "Reset %s\n", (cmd1 & Cmd1Reset) ?
+ "failed" : "succeeded");
+}
+
+static void enable_mmio(long pioaddr, u32 quirks)
+{
+ int n;
+
+ if (quirks & rqNeedEnMMIO) {
+ if (quirks & rqRhineI) {
+ /* More recent docs say that this bit is reserved */
+ n = inb(pioaddr + ConfigA) | 0x20;
+ outb(n, pioaddr + ConfigA);
+ } else {
+ n = inb(pioaddr + ConfigD) | 0x80;
+ outb(n, pioaddr + ConfigD);
+ }
+ }
+}
+
+static inline int verify_mmio(struct device *hwdev,
+ long pioaddr,
+ void __iomem *ioaddr,
+ u32 quirks)
+{
+ if (quirks & rqNeedEnMMIO) {
+ int i = 0;
+
+ /* Check that selected MMIO registers match the PIO ones */
+ while (mmio_verify_registers[i]) {
+ int reg = mmio_verify_registers[i++];
+ unsigned char a = inb(pioaddr+reg);
+ unsigned char b = readb(ioaddr+reg);
+
+ if (a != b) {
+ dev_err(hwdev,
+ "MMIO do not match PIO [%02x] (%02x != %02x)\n",
+ reg, a, b);
+ return -EIO;
+ }
+ }
+ }
+ return 0;
+}
+
+/*
+ * Loads bytes 0x00-0x05, 0x6E-0x6F, 0x78-0x7B from EEPROM
+ * (plus 0x6C for Rhine-I/II)
+ */
+static void rhine_reload_eeprom(long pioaddr, struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+ int i;
+
+ outb(0x20, pioaddr + MACRegEEcsr);
+ for (i = 0; i < 1024; i++) {
+ if (!(inb(pioaddr + MACRegEEcsr) & 0x20))
+ break;
+ }
+ if (i > 512)
+ pr_info("%4d cycles used @ %s:%d\n", i, __func__, __LINE__);
+
+ /*
+ * Reloading from EEPROM overwrites ConfigA-D, so we must re-enable
+ * MMIO. If reloading EEPROM was done first this could be avoided, but
+ * it is not known if that still works with the "win98-reboot" problem.
+ */
+ enable_mmio(pioaddr, rp->quirks);
+
+ /* Turn off EEPROM-controlled wake-up (magic packet) */
+ if (rp->quirks & rqWOL)
+ iowrite8(ioread8(ioaddr + ConfigA) & 0xFC, ioaddr + ConfigA);
+
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void rhine_poll(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ const int irq = rp->irq;
+
+ disable_irq(irq);
+ rhine_interrupt(irq, dev);
+ enable_irq(irq);
+}
+#endif
+
+static void rhine_kick_tx_threshold(struct rhine_private *rp)
+{
+ if (rp->tx_thresh < 0xe0) {
+ void __iomem *ioaddr = rp->base;
+
+ rp->tx_thresh += 0x20;
+ BYTE_REG_BITS_SET(rp->tx_thresh, 0x80, ioaddr + TxConfig);
+ }
+}
+
+static void rhine_tx_err(struct rhine_private *rp, u32 status)
+{
+ struct net_device *dev = rp->dev;
+
+ if (status & IntrTxAborted) {
+ netif_info(rp, tx_err, dev,
+ "Abort %08x, frame dropped\n", status);
+ }
+
+ if (status & IntrTxUnderrun) {
+ rhine_kick_tx_threshold(rp);
+ netif_info(rp, tx_err ,dev, "Transmitter underrun, "
+ "Tx threshold now %02x\n", rp->tx_thresh);
+ }
+
+ if (status & IntrTxDescRace)
+ netif_info(rp, tx_err, dev, "Tx descriptor write-back race\n");
+
+ if ((status & IntrTxError) &&
+ (status & (IntrTxAborted | IntrTxUnderrun | IntrTxDescRace)) == 0) {
+ rhine_kick_tx_threshold(rp);
+ netif_info(rp, tx_err, dev, "Unspecified error. "
+ "Tx threshold now %02x\n", rp->tx_thresh);
+ }
+
+ rhine_restart_tx(dev);
+}
+
+static void rhine_update_rx_crc_and_missed_errord(struct rhine_private *rp)
+{
+ void __iomem *ioaddr = rp->base;
+ struct net_device_stats *stats = &rp->dev->stats;
+
+ stats->rx_crc_errors += ioread16(ioaddr + RxCRCErrs);
+ stats->rx_missed_errors += ioread16(ioaddr + RxMissed);
+
+ /*
+ * Clears the "tally counters" for CRC errors and missed frames(?).
+ * It has been reported that some chips need a write of 0 to clear
+ * these, for others the counters are set to 1 when written to and
+ * instead cleared when read. So we clear them both ways ...
+ */
+ iowrite32(0, ioaddr + RxMissed);
+ ioread16(ioaddr + RxCRCErrs);
+ ioread16(ioaddr + RxMissed);
+}
+
+#define RHINE_EVENT_NAPI_RX (IntrRxDone | \
+ IntrRxErr | \
+ IntrRxEmpty | \
+ IntrRxOverflow | \
+ IntrRxDropped | \
+ IntrRxNoBuf | \
+ IntrRxWakeUp)
+
+#define RHINE_EVENT_NAPI_TX_ERR (IntrTxError | \
+ IntrTxAborted | \
+ IntrTxUnderrun | \
+ IntrTxDescRace)
+#define RHINE_EVENT_NAPI_TX (IntrTxDone | RHINE_EVENT_NAPI_TX_ERR)
+
+#define RHINE_EVENT_NAPI (RHINE_EVENT_NAPI_RX | \
+ RHINE_EVENT_NAPI_TX | \
+ IntrStatsMax)
+#define RHINE_EVENT_SLOW (IntrPCIErr | IntrLinkChange)
+#define RHINE_EVENT (RHINE_EVENT_NAPI | RHINE_EVENT_SLOW)
+
+static int rhine_napipoll(struct napi_struct *napi, int budget)
+{
+ struct rhine_private *rp = container_of(napi, struct rhine_private, napi);
+ struct net_device *dev = rp->dev;
+ void __iomem *ioaddr = rp->base;
+ u16 enable_mask = RHINE_EVENT & 0xffff;
+ int work_done = 0;
+ u32 status;
+
+ status = rhine_get_events(rp);
+ rhine_ack_events(rp, status & ~RHINE_EVENT_SLOW);
+
+ if (status & RHINE_EVENT_NAPI_RX)
+ work_done += rhine_rx(dev, budget);
+
+ if (status & RHINE_EVENT_NAPI_TX) {
+ if (status & RHINE_EVENT_NAPI_TX_ERR) {
+ /* Avoid scavenging before Tx engine turned off */
+ rhine_wait_bit_low(rp, ChipCmd, CmdTxOn);
+ if (ioread8(ioaddr + ChipCmd) & CmdTxOn)
+ netif_warn(rp, tx_err, dev, "Tx still on\n");
+ }
+
+ rhine_tx(dev);
+
+ if (status & RHINE_EVENT_NAPI_TX_ERR)
+ rhine_tx_err(rp, status);
+ }
+
+ if (status & IntrStatsMax) {
+ spin_lock(&rp->lock);
+ rhine_update_rx_crc_and_missed_errord(rp);
+ spin_unlock(&rp->lock);
+ }
+
+ if (status & RHINE_EVENT_SLOW) {
+ enable_mask &= ~RHINE_EVENT_SLOW;
+ schedule_work(&rp->slow_event_task);
+ }
+
+ if (work_done < budget) {
+ napi_complete_done(napi, work_done);
+ iowrite16(enable_mask, ioaddr + IntrEnable);
+ }
+ return work_done;
+}
+
+static void rhine_hw_init(struct net_device *dev, long pioaddr)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ /* Reset the chip to erase previous misconfiguration. */
+ rhine_chip_reset(dev);
+
+ /* Rhine-I needs extra time to recuperate before EEPROM reload */
+ if (rp->quirks & rqRhineI)
+ msleep(5);
+
+ /* Reload EEPROM controlled bytes cleared by soft reset */
+ if (dev_is_pci(dev->dev.parent))
+ rhine_reload_eeprom(pioaddr, dev);
+}
+
+static const struct net_device_ops rhine_netdev_ops = {
+ .ndo_open = rhine_open,
+ .ndo_stop = rhine_close,
+ .ndo_start_xmit = rhine_start_tx,
+ .ndo_get_stats64 = rhine_get_stats64,
+ .ndo_set_rx_mode = rhine_set_rx_mode,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_eth_ioctl = netdev_ioctl,
+ .ndo_tx_timeout = rhine_tx_timeout,
+ .ndo_vlan_rx_add_vid = rhine_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = rhine_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = rhine_poll,
+#endif
+};
+
+static int rhine_init_one_common(struct device *hwdev, u32 quirks,
+ long pioaddr, void __iomem *ioaddr, int irq)
+{
+ struct net_device *dev;
+ struct rhine_private *rp;
+ int i, rc, phy_id;
+ u8 addr[ETH_ALEN];
+ const char *name;
+
+ /* this should always be supported */
+ rc = dma_set_mask(hwdev, DMA_BIT_MASK(32));
+ if (rc) {
+ dev_err(hwdev, "32-bit DMA addresses not supported by the card!?\n");
+ goto err_out;
+ }
+
+ dev = alloc_etherdev(sizeof(struct rhine_private));
+ if (!dev) {
+ rc = -ENOMEM;
+ goto err_out;
+ }
+ SET_NETDEV_DEV(dev, hwdev);
+
+ rp = netdev_priv(dev);
+ rp->dev = dev;
+ rp->quirks = quirks;
+ rp->pioaddr = pioaddr;
+ rp->base = ioaddr;
+ rp->irq = irq;
+ rp->msg_enable = netif_msg_init(debug, RHINE_MSG_DEFAULT);
+
+ phy_id = rp->quirks & rqIntPHY ? 1 : 0;
+
+ u64_stats_init(&rp->tx_stats.syncp);
+ u64_stats_init(&rp->rx_stats.syncp);
+
+ /* Get chip registers into a sane state */
+ rhine_power_init(dev);
+ rhine_hw_init(dev, pioaddr);
+
+ for (i = 0; i < 6; i++)
+ addr[i] = ioread8(ioaddr + StationAddr + i);
+ eth_hw_addr_set(dev, addr);
+
+ if (!is_valid_ether_addr(dev->dev_addr)) {
+ /* Report it and use a random ethernet address instead */
+ netdev_err(dev, "Invalid MAC address: %pM\n", dev->dev_addr);
+ eth_hw_addr_random(dev);
+ netdev_info(dev, "Using random MAC address: %pM\n",
+ dev->dev_addr);
+ }
+
+ /* For Rhine-I/II, phy_id is loaded from EEPROM */
+ if (!phy_id)
+ phy_id = ioread8(ioaddr + 0x6C);
+
+ spin_lock_init(&rp->lock);
+ mutex_init(&rp->task_lock);
+ INIT_WORK(&rp->reset_task, rhine_reset_task);
+ INIT_WORK(&rp->slow_event_task, rhine_slow_event_task);
+
+ rp->mii_if.dev = dev;
+ rp->mii_if.mdio_read = mdio_read;
+ rp->mii_if.mdio_write = mdio_write;
+ rp->mii_if.phy_id_mask = 0x1f;
+ rp->mii_if.reg_num_mask = 0x1f;
+
+ /* The chip-specific entries in the device structure. */
+ dev->netdev_ops = &rhine_netdev_ops;
+ dev->ethtool_ops = &netdev_ethtool_ops;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ netif_napi_add(dev, &rp->napi, rhine_napipoll);
+
+ if (rp->quirks & rqRhineI)
+ dev->features |= NETIF_F_SG|NETIF_F_HW_CSUM;
+
+ if (rp->quirks & rqMgmt)
+ dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
+ NETIF_F_HW_VLAN_CTAG_RX |
+ NETIF_F_HW_VLAN_CTAG_FILTER;
+
+ /* dev->name not defined before register_netdev()! */
+ rc = register_netdev(dev);
+ if (rc)
+ goto err_out_free_netdev;
+
+ if (rp->quirks & rqRhineI)
+ name = "Rhine";
+ else if (rp->quirks & rqStatusWBRace)
+ name = "Rhine II";
+ else if (rp->quirks & rqMgmt)
+ name = "Rhine III (Management Adapter)";
+ else
+ name = "Rhine III";
+
+ netdev_info(dev, "VIA %s at %p, %pM, IRQ %d\n",
+ name, ioaddr, dev->dev_addr, rp->irq);
+
+ dev_set_drvdata(hwdev, dev);
+
+ {
+ u16 mii_cmd;
+ int mii_status = mdio_read(dev, phy_id, 1);
+ mii_cmd = mdio_read(dev, phy_id, MII_BMCR) & ~BMCR_ISOLATE;
+ mdio_write(dev, phy_id, MII_BMCR, mii_cmd);
+ if (mii_status != 0xffff && mii_status != 0x0000) {
+ rp->mii_if.advertising = mdio_read(dev, phy_id, 4);
+ netdev_info(dev,
+ "MII PHY found at address %d, status 0x%04x advertising %04x Link %04x\n",
+ phy_id,
+ mii_status, rp->mii_if.advertising,
+ mdio_read(dev, phy_id, 5));
+
+ /* set IFF_RUNNING */
+ if (mii_status & BMSR_LSTATUS)
+ netif_carrier_on(dev);
+ else
+ netif_carrier_off(dev);
+
+ }
+ }
+ rp->mii_if.phy_id = phy_id;
+ if (avoid_D3)
+ netif_info(rp, probe, dev, "No D3 power state at shutdown\n");
+
+ return 0;
+
+err_out_free_netdev:
+ free_netdev(dev);
+err_out:
+ return rc;
+}
+
+static int rhine_init_one_pci(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct device *hwdev = &pdev->dev;
+ int rc;
+ long pioaddr, memaddr;
+ void __iomem *ioaddr;
+ int io_size = pdev->revision < VTunknown0 ? 128 : 256;
+
+/* This driver was written to use PCI memory space. Some early versions
+ * of the Rhine may only work correctly with I/O space accesses.
+ * TODO: determine for which revisions this is true and assign the flag
+ * in code as opposed to this Kconfig option (???)
+ */
+#ifdef CONFIG_VIA_RHINE_MMIO
+ u32 quirks = rqNeedEnMMIO;
+#else
+ u32 quirks = 0;
+#endif
+
+ rc = pci_enable_device(pdev);
+ if (rc)
+ goto err_out;
+
+ if (pdev->revision < VTunknown0) {
+ quirks |= rqRhineI;
+ } else if (pdev->revision >= VT6102) {
+ quirks |= rqWOL | rqForceReset;
+ if (pdev->revision < VT6105) {
+ quirks |= rqStatusWBRace;
+ } else {
+ quirks |= rqIntPHY;
+ if (pdev->revision >= VT6105_B0)
+ quirks |= rq6patterns;
+ if (pdev->revision >= VT6105M)
+ quirks |= rqMgmt;
+ }
+ }
+
+ /* sanity check */
+ if ((pci_resource_len(pdev, 0) < io_size) ||
+ (pci_resource_len(pdev, 1) < io_size)) {
+ rc = -EIO;
+ dev_err(hwdev, "Insufficient PCI resources, aborting\n");
+ goto err_out_pci_disable;
+ }
+
+ pioaddr = pci_resource_start(pdev, 0);
+ memaddr = pci_resource_start(pdev, 1);
+
+ pci_set_master(pdev);
+
+ rc = pci_request_regions(pdev, DRV_NAME);
+ if (rc)
+ goto err_out_pci_disable;
+
+ ioaddr = pci_iomap(pdev, (quirks & rqNeedEnMMIO ? 1 : 0), io_size);
+ if (!ioaddr) {
+ rc = -EIO;
+ dev_err(hwdev,
+ "ioremap failed for device %s, region 0x%X @ 0x%lX\n",
+ dev_name(hwdev), io_size, memaddr);
+ goto err_out_free_res;
+ }
+
+ enable_mmio(pioaddr, quirks);
+
+ rc = verify_mmio(hwdev, pioaddr, ioaddr, quirks);
+ if (rc)
+ goto err_out_unmap;
+
+ rc = rhine_init_one_common(&pdev->dev, quirks,
+ pioaddr, ioaddr, pdev->irq);
+ if (!rc)
+ return 0;
+
+err_out_unmap:
+ pci_iounmap(pdev, ioaddr);
+err_out_free_res:
+ pci_release_regions(pdev);
+err_out_pci_disable:
+ pci_disable_device(pdev);
+err_out:
+ return rc;
+}
+
+static int rhine_init_one_platform(struct platform_device *pdev)
+{
+ const u32 *quirks;
+ int irq;
+ void __iomem *ioaddr;
+
+ quirks = of_device_get_match_data(&pdev->dev);
+ if (!quirks)
+ return -EINVAL;
+
+ ioaddr = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(ioaddr))
+ return PTR_ERR(ioaddr);
+
+ irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
+ if (!irq)
+ return -EINVAL;
+
+ return rhine_init_one_common(&pdev->dev, *quirks,
+ (long)ioaddr, ioaddr, irq);
+}
+
+static int alloc_ring(struct net_device* dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
+ void *ring;
+ dma_addr_t ring_dma;
+
+ ring = dma_alloc_coherent(hwdev,
+ RX_RING_SIZE * sizeof(struct rx_desc) +
+ TX_RING_SIZE * sizeof(struct tx_desc),
+ &ring_dma,
+ GFP_ATOMIC);
+ if (!ring) {
+ netdev_err(dev, "Could not allocate DMA memory\n");
+ return -ENOMEM;
+ }
+ if (rp->quirks & rqRhineI) {
+ rp->tx_bufs = dma_alloc_coherent(hwdev,
+ PKT_BUF_SZ * TX_RING_SIZE,
+ &rp->tx_bufs_dma,
+ GFP_ATOMIC);
+ if (rp->tx_bufs == NULL) {
+ dma_free_coherent(hwdev,
+ RX_RING_SIZE * sizeof(struct rx_desc) +
+ TX_RING_SIZE * sizeof(struct tx_desc),
+ ring, ring_dma);
+ return -ENOMEM;
+ }
+ }
+
+ rp->rx_ring = ring;
+ rp->tx_ring = ring + RX_RING_SIZE * sizeof(struct rx_desc);
+ rp->rx_ring_dma = ring_dma;
+ rp->tx_ring_dma = ring_dma + RX_RING_SIZE * sizeof(struct rx_desc);
+
+ return 0;
+}
+
+static void free_ring(struct net_device* dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
+
+ dma_free_coherent(hwdev,
+ RX_RING_SIZE * sizeof(struct rx_desc) +
+ TX_RING_SIZE * sizeof(struct tx_desc),
+ rp->rx_ring, rp->rx_ring_dma);
+ rp->tx_ring = NULL;
+
+ if (rp->tx_bufs)
+ dma_free_coherent(hwdev, PKT_BUF_SZ * TX_RING_SIZE,
+ rp->tx_bufs, rp->tx_bufs_dma);
+
+ rp->tx_bufs = NULL;
+
+}
+
+struct rhine_skb_dma {
+ struct sk_buff *skb;
+ dma_addr_t dma;
+};
+
+static inline int rhine_skb_dma_init(struct net_device *dev,
+ struct rhine_skb_dma *sd)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
+ const int size = rp->rx_buf_sz;
+
+ sd->skb = netdev_alloc_skb(dev, size);
+ if (!sd->skb)
+ return -ENOMEM;
+
+ sd->dma = dma_map_single(hwdev, sd->skb->data, size, DMA_FROM_DEVICE);
+ if (unlikely(dma_mapping_error(hwdev, sd->dma))) {
+ netif_err(rp, drv, dev, "Rx DMA mapping failure\n");
+ dev_kfree_skb_any(sd->skb);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static void rhine_reset_rbufs(struct rhine_private *rp)
+{
+ int i;
+
+ rp->cur_rx = 0;
+
+ for (i = 0; i < RX_RING_SIZE; i++)
+ rp->rx_ring[i].rx_status = cpu_to_le32(DescOwn);
+}
+
+static inline void rhine_skb_dma_nic_store(struct rhine_private *rp,
+ struct rhine_skb_dma *sd, int entry)
+{
+ rp->rx_skbuff_dma[entry] = sd->dma;
+ rp->rx_skbuff[entry] = sd->skb;
+
+ rp->rx_ring[entry].addr = cpu_to_le32(sd->dma);
+ dma_wmb();
+}
+
+static void free_rbufs(struct net_device* dev);
+
+static int alloc_rbufs(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ dma_addr_t next;
+ int rc, i;
+
+ rp->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
+ next = rp->rx_ring_dma;
+
+ /* Init the ring entries */
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ rp->rx_ring[i].rx_status = 0;
+ rp->rx_ring[i].desc_length = cpu_to_le32(rp->rx_buf_sz);
+ next += sizeof(struct rx_desc);
+ rp->rx_ring[i].next_desc = cpu_to_le32(next);
+ rp->rx_skbuff[i] = NULL;
+ }
+ /* Mark the last entry as wrapping the ring. */
+ rp->rx_ring[i-1].next_desc = cpu_to_le32(rp->rx_ring_dma);
+
+ /* Fill in the Rx buffers. Handle allocation failure gracefully. */
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ struct rhine_skb_dma sd;
+
+ rc = rhine_skb_dma_init(dev, &sd);
+ if (rc < 0) {
+ free_rbufs(dev);
+ goto out;
+ }
+
+ rhine_skb_dma_nic_store(rp, &sd, i);
+ }
+
+ rhine_reset_rbufs(rp);
+out:
+ return rc;
+}
+
+static void free_rbufs(struct net_device* dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
+ int i;
+
+ /* Free all the skbuffs in the Rx queue. */
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ rp->rx_ring[i].rx_status = 0;
+ rp->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */
+ if (rp->rx_skbuff[i]) {
+ dma_unmap_single(hwdev,
+ rp->rx_skbuff_dma[i],
+ rp->rx_buf_sz, DMA_FROM_DEVICE);
+ dev_kfree_skb(rp->rx_skbuff[i]);
+ }
+ rp->rx_skbuff[i] = NULL;
+ }
+}
+
+static void alloc_tbufs(struct net_device* dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ dma_addr_t next;
+ int i;
+
+ rp->dirty_tx = rp->cur_tx = 0;
+ next = rp->tx_ring_dma;
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ rp->tx_skbuff[i] = NULL;
+ rp->tx_ring[i].tx_status = 0;
+ rp->tx_ring[i].desc_length = cpu_to_le32(TXDESC);
+ next += sizeof(struct tx_desc);
+ rp->tx_ring[i].next_desc = cpu_to_le32(next);
+ if (rp->quirks & rqRhineI)
+ rp->tx_buf[i] = &rp->tx_bufs[i * PKT_BUF_SZ];
+ }
+ rp->tx_ring[i-1].next_desc = cpu_to_le32(rp->tx_ring_dma);
+
+ netdev_reset_queue(dev);
+}
+
+static void free_tbufs(struct net_device* dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
+ int i;
+
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ rp->tx_ring[i].tx_status = 0;
+ rp->tx_ring[i].desc_length = cpu_to_le32(TXDESC);
+ rp->tx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */
+ if (rp->tx_skbuff[i]) {
+ if (rp->tx_skbuff_dma[i]) {
+ dma_unmap_single(hwdev,
+ rp->tx_skbuff_dma[i],
+ rp->tx_skbuff[i]->len,
+ DMA_TO_DEVICE);
+ }
+ dev_kfree_skb(rp->tx_skbuff[i]);
+ }
+ rp->tx_skbuff[i] = NULL;
+ rp->tx_buf[i] = NULL;
+ }
+}
+
+static void rhine_check_media(struct net_device *dev, unsigned int init_media)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+
+ if (!rp->mii_if.force_media)
+ mii_check_media(&rp->mii_if, netif_msg_link(rp), init_media);
+
+ if (rp->mii_if.full_duplex)
+ iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1FDuplex,
+ ioaddr + ChipCmd1);
+ else
+ iowrite8(ioread8(ioaddr + ChipCmd1) & ~Cmd1FDuplex,
+ ioaddr + ChipCmd1);
+
+ netif_info(rp, link, dev, "force_media %d, carrier %d\n",
+ rp->mii_if.force_media, netif_carrier_ok(dev));
+}
+
+/* Called after status of force_media possibly changed */
+static void rhine_set_carrier(struct mii_if_info *mii)
+{
+ struct net_device *dev = mii->dev;
+ struct rhine_private *rp = netdev_priv(dev);
+
+ if (mii->force_media) {
+ /* autoneg is off: Link is always assumed to be up */
+ if (!netif_carrier_ok(dev))
+ netif_carrier_on(dev);
+ }
+
+ rhine_check_media(dev, 0);
+
+ netif_info(rp, link, dev, "force_media %d, carrier %d\n",
+ mii->force_media, netif_carrier_ok(dev));
+}
+
+/**
+ * rhine_set_cam - set CAM multicast filters
+ * @ioaddr: register block of this Rhine
+ * @idx: multicast CAM index [0..MCAM_SIZE-1]
+ * @addr: multicast address (6 bytes)
+ *
+ * Load addresses into multicast filters.
+ */
+static void rhine_set_cam(void __iomem *ioaddr, int idx, u8 *addr)
+{
+ int i;
+
+ iowrite8(CAMC_CAMEN, ioaddr + CamCon);
+ wmb();
+
+ /* Paranoid -- idx out of range should never happen */
+ idx &= (MCAM_SIZE - 1);
+
+ iowrite8((u8) idx, ioaddr + CamAddr);
+
+ for (i = 0; i < 6; i++, addr++)
+ iowrite8(*addr, ioaddr + MulticastFilter0 + i);
+ udelay(10);
+ wmb();
+
+ iowrite8(CAMC_CAMWR | CAMC_CAMEN, ioaddr + CamCon);
+ udelay(10);
+
+ iowrite8(0, ioaddr + CamCon);
+}
+
+/**
+ * rhine_set_vlan_cam - set CAM VLAN filters
+ * @ioaddr: register block of this Rhine
+ * @idx: VLAN CAM index [0..VCAM_SIZE-1]
+ * @addr: VLAN ID (2 bytes)
+ *
+ * Load addresses into VLAN filters.
+ */
+static void rhine_set_vlan_cam(void __iomem *ioaddr, int idx, u8 *addr)
+{
+ iowrite8(CAMC_CAMEN | CAMC_VCAMSL, ioaddr + CamCon);
+ wmb();
+
+ /* Paranoid -- idx out of range should never happen */
+ idx &= (VCAM_SIZE - 1);
+
+ iowrite8((u8) idx, ioaddr + CamAddr);
+
+ iowrite16(*((u16 *) addr), ioaddr + MulticastFilter0 + 6);
+ udelay(10);
+ wmb();
+
+ iowrite8(CAMC_CAMWR | CAMC_CAMEN, ioaddr + CamCon);
+ udelay(10);
+
+ iowrite8(0, ioaddr + CamCon);
+}
+
+/**
+ * rhine_set_cam_mask - set multicast CAM mask
+ * @ioaddr: register block of this Rhine
+ * @mask: multicast CAM mask
+ *
+ * Mask sets multicast filters active/inactive.
+ */
+static void rhine_set_cam_mask(void __iomem *ioaddr, u32 mask)
+{
+ iowrite8(CAMC_CAMEN, ioaddr + CamCon);
+ wmb();
+
+ /* write mask */
+ iowrite32(mask, ioaddr + CamMask);
+
+ /* disable CAMEN */
+ iowrite8(0, ioaddr + CamCon);
+}
+
+/**
+ * rhine_set_vlan_cam_mask - set VLAN CAM mask
+ * @ioaddr: register block of this Rhine
+ * @mask: VLAN CAM mask
+ *
+ * Mask sets VLAN filters active/inactive.
+ */
+static void rhine_set_vlan_cam_mask(void __iomem *ioaddr, u32 mask)
+{
+ iowrite8(CAMC_CAMEN | CAMC_VCAMSL, ioaddr + CamCon);
+ wmb();
+
+ /* write mask */
+ iowrite32(mask, ioaddr + CamMask);
+
+ /* disable CAMEN */
+ iowrite8(0, ioaddr + CamCon);
+}
+
+/**
+ * rhine_init_cam_filter - initialize CAM filters
+ * @dev: network device
+ *
+ * Initialize (disable) hardware VLAN and multicast support on this
+ * Rhine.
+ */
+static void rhine_init_cam_filter(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+
+ /* Disable all CAMs */
+ rhine_set_vlan_cam_mask(ioaddr, 0);
+ rhine_set_cam_mask(ioaddr, 0);
+
+ /* disable hardware VLAN support */
+ BYTE_REG_BITS_ON(TCR_PQEN, ioaddr + TxConfig);
+ BYTE_REG_BITS_OFF(BCR1_VIDFR, ioaddr + PCIBusConfig1);
+}
+
+/**
+ * rhine_update_vcam - update VLAN CAM filters
+ * @dev: rhine_private data of this Rhine
+ *
+ * Update VLAN CAM filters to match configuration change.
+ */
+static void rhine_update_vcam(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+ u16 vid;
+ u32 vCAMmask = 0; /* 32 vCAMs (6105M and better) */
+ unsigned int i = 0;
+
+ for_each_set_bit(vid, rp->active_vlans, VLAN_N_VID) {
+ rhine_set_vlan_cam(ioaddr, i, (u8 *)&vid);
+ vCAMmask |= 1 << i;
+ if (++i >= VCAM_SIZE)
+ break;
+ }
+ rhine_set_vlan_cam_mask(ioaddr, vCAMmask);
+}
+
+static int rhine_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ spin_lock_bh(&rp->lock);
+ set_bit(vid, rp->active_vlans);
+ rhine_update_vcam(dev);
+ spin_unlock_bh(&rp->lock);
+ return 0;
+}
+
+static int rhine_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ spin_lock_bh(&rp->lock);
+ clear_bit(vid, rp->active_vlans);
+ rhine_update_vcam(dev);
+ spin_unlock_bh(&rp->lock);
+ return 0;
+}
+
+static void init_registers(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+ int i;
+
+ for (i = 0; i < 6; i++)
+ iowrite8(dev->dev_addr[i], ioaddr + StationAddr + i);
+
+ /* Initialize other registers. */
+ iowrite16(0x0006, ioaddr + PCIBusConfig); /* Tune configuration??? */
+ /* Configure initial FIFO thresholds. */
+ iowrite8(0x20, ioaddr + TxConfig);
+ rp->tx_thresh = 0x20;
+ rp->rx_thresh = 0x60; /* Written in rhine_set_rx_mode(). */
+
+ iowrite32(rp->rx_ring_dma, ioaddr + RxRingPtr);
+ iowrite32(rp->tx_ring_dma, ioaddr + TxRingPtr);
+
+ rhine_set_rx_mode(dev);
+
+ if (rp->quirks & rqMgmt)
+ rhine_init_cam_filter(dev);
+
+ napi_enable(&rp->napi);
+
+ iowrite16(RHINE_EVENT & 0xffff, ioaddr + IntrEnable);
+
+ iowrite16(CmdStart | CmdTxOn | CmdRxOn | (Cmd1NoTxPoll << 8),
+ ioaddr + ChipCmd);
+ rhine_check_media(dev, 1);
+}
+
+/* Enable MII link status auto-polling (required for IntrLinkChange) */
+static void rhine_enable_linkmon(struct rhine_private *rp)
+{
+ void __iomem *ioaddr = rp->base;
+
+ iowrite8(0, ioaddr + MIICmd);
+ iowrite8(MII_BMSR, ioaddr + MIIRegAddr);
+ iowrite8(0x80, ioaddr + MIICmd);
+
+ rhine_wait_bit_high(rp, MIIRegAddr, 0x20);
+
+ iowrite8(MII_BMSR | 0x40, ioaddr + MIIRegAddr);
+}
+
+/* Disable MII link status auto-polling (required for MDIO access) */
+static void rhine_disable_linkmon(struct rhine_private *rp)
+{
+ void __iomem *ioaddr = rp->base;
+
+ iowrite8(0, ioaddr + MIICmd);
+
+ if (rp->quirks & rqRhineI) {
+ iowrite8(0x01, ioaddr + MIIRegAddr); // MII_BMSR
+
+ /* Can be called from ISR. Evil. */
+ mdelay(1);
+
+ /* 0x80 must be set immediately before turning it off */
+ iowrite8(0x80, ioaddr + MIICmd);
+
+ rhine_wait_bit_high(rp, MIIRegAddr, 0x20);
+
+ /* Heh. Now clear 0x80 again. */
+ iowrite8(0, ioaddr + MIICmd);
+ }
+ else
+ rhine_wait_bit_high(rp, MIIRegAddr, 0x80);
+}
+
+/* Read and write over the MII Management Data I/O (MDIO) interface. */
+
+static int mdio_read(struct net_device *dev, int phy_id, int regnum)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+ int result;
+
+ rhine_disable_linkmon(rp);
+
+ /* rhine_disable_linkmon already cleared MIICmd */
+ iowrite8(phy_id, ioaddr + MIIPhyAddr);
+ iowrite8(regnum, ioaddr + MIIRegAddr);
+ iowrite8(0x40, ioaddr + MIICmd); /* Trigger read */
+ rhine_wait_bit_low(rp, MIICmd, 0x40);
+ result = ioread16(ioaddr + MIIData);
+
+ rhine_enable_linkmon(rp);
+ return result;
+}
+
+static void mdio_write(struct net_device *dev, int phy_id, int regnum, int value)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+
+ rhine_disable_linkmon(rp);
+
+ /* rhine_disable_linkmon already cleared MIICmd */
+ iowrite8(phy_id, ioaddr + MIIPhyAddr);
+ iowrite8(regnum, ioaddr + MIIRegAddr);
+ iowrite16(value, ioaddr + MIIData);
+ iowrite8(0x20, ioaddr + MIICmd); /* Trigger write */
+ rhine_wait_bit_low(rp, MIICmd, 0x20);
+
+ rhine_enable_linkmon(rp);
+}
+
+static void rhine_task_disable(struct rhine_private *rp)
+{
+ mutex_lock(&rp->task_lock);
+ rp->task_enable = false;
+ mutex_unlock(&rp->task_lock);
+
+ cancel_work_sync(&rp->slow_event_task);
+ cancel_work_sync(&rp->reset_task);
+}
+
+static void rhine_task_enable(struct rhine_private *rp)
+{
+ mutex_lock(&rp->task_lock);
+ rp->task_enable = true;
+ mutex_unlock(&rp->task_lock);
+}
+
+static int rhine_open(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+ int rc;
+
+ rc = request_irq(rp->irq, rhine_interrupt, IRQF_SHARED, dev->name, dev);
+ if (rc)
+ goto out;
+
+ netif_dbg(rp, ifup, dev, "%s() irq %d\n", __func__, rp->irq);
+
+ rc = alloc_ring(dev);
+ if (rc < 0)
+ goto out_free_irq;
+
+ rc = alloc_rbufs(dev);
+ if (rc < 0)
+ goto out_free_ring;
+
+ alloc_tbufs(dev);
+ enable_mmio(rp->pioaddr, rp->quirks);
+ rhine_power_init(dev);
+ rhine_chip_reset(dev);
+ rhine_task_enable(rp);
+ init_registers(dev);
+
+ netif_dbg(rp, ifup, dev, "%s() Done - status %04x MII status: %04x\n",
+ __func__, ioread16(ioaddr + ChipCmd),
+ mdio_read(dev, rp->mii_if.phy_id, MII_BMSR));
+
+ netif_start_queue(dev);
+
+out:
+ return rc;
+
+out_free_ring:
+ free_ring(dev);
+out_free_irq:
+ free_irq(rp->irq, dev);
+ goto out;
+}
+
+static void rhine_reset_task(struct work_struct *work)
+{
+ struct rhine_private *rp = container_of(work, struct rhine_private,
+ reset_task);
+ struct net_device *dev = rp->dev;
+
+ mutex_lock(&rp->task_lock);
+
+ if (!rp->task_enable)
+ goto out_unlock;
+
+ napi_disable(&rp->napi);
+ netif_tx_disable(dev);
+ spin_lock_bh(&rp->lock);
+
+ /* clear all descriptors */
+ free_tbufs(dev);
+ alloc_tbufs(dev);
+
+ rhine_reset_rbufs(rp);
+
+ /* Reinitialize the hardware. */
+ rhine_chip_reset(dev);
+ init_registers(dev);
+
+ spin_unlock_bh(&rp->lock);
+
+ netif_trans_update(dev); /* prevent tx timeout */
+ dev->stats.tx_errors++;
+ netif_wake_queue(dev);
+
+out_unlock:
+ mutex_unlock(&rp->task_lock);
+}
+
+static void rhine_tx_timeout(struct net_device *dev, unsigned int txqueue)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+
+ netdev_warn(dev, "Transmit timed out, status %04x, PHY status %04x, resetting...\n",
+ ioread16(ioaddr + IntrStatus),
+ mdio_read(dev, rp->mii_if.phy_id, MII_BMSR));
+
+ schedule_work(&rp->reset_task);
+}
+
+static inline bool rhine_tx_queue_full(struct rhine_private *rp)
+{
+ return (rp->cur_tx - rp->dirty_tx) >= TX_QUEUE_LEN;
+}
+
+static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
+ void __iomem *ioaddr = rp->base;
+ unsigned entry;
+
+ /* Caution: the write order is important here, set the field
+ with the "ownership" bits last. */
+
+ /* Calculate the next Tx descriptor entry. */
+ entry = rp->cur_tx % TX_RING_SIZE;
+
+ if (skb_padto(skb, ETH_ZLEN))
+ return NETDEV_TX_OK;
+
+ rp->tx_skbuff[entry] = skb;
+
+ if ((rp->quirks & rqRhineI) &&
+ (((unsigned long)skb->data & 3) || skb_shinfo(skb)->nr_frags != 0 || skb->ip_summed == CHECKSUM_PARTIAL)) {
+ /* Must use alignment buffer. */
+ if (skb->len > PKT_BUF_SZ) {
+ /* packet too long, drop it */
+ dev_kfree_skb_any(skb);
+ rp->tx_skbuff[entry] = NULL;
+ dev->stats.tx_dropped++;
+ return NETDEV_TX_OK;
+ }
+
+ /* Padding is not copied and so must be redone. */
+ skb_copy_and_csum_dev(skb, rp->tx_buf[entry]);
+ if (skb->len < ETH_ZLEN)
+ memset(rp->tx_buf[entry] + skb->len, 0,
+ ETH_ZLEN - skb->len);
+ rp->tx_skbuff_dma[entry] = 0;
+ rp->tx_ring[entry].addr = cpu_to_le32(rp->tx_bufs_dma +
+ (rp->tx_buf[entry] -
+ rp->tx_bufs));
+ } else {
+ rp->tx_skbuff_dma[entry] =
+ dma_map_single(hwdev, skb->data, skb->len,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(hwdev, rp->tx_skbuff_dma[entry])) {
+ dev_kfree_skb_any(skb);
+ rp->tx_skbuff_dma[entry] = 0;
+ dev->stats.tx_dropped++;
+ return NETDEV_TX_OK;
+ }
+ rp->tx_ring[entry].addr = cpu_to_le32(rp->tx_skbuff_dma[entry]);
+ }
+
+ rp->tx_ring[entry].desc_length =
+ cpu_to_le32(TXDESC | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN));
+
+ if (unlikely(skb_vlan_tag_present(skb))) {
+ u16 vid_pcp = skb_vlan_tag_get(skb);
+
+ /* drop CFI/DEI bit, register needs VID and PCP */
+ vid_pcp = (vid_pcp & VLAN_VID_MASK) |
+ ((vid_pcp & VLAN_PRIO_MASK) >> 1);
+ rp->tx_ring[entry].tx_status = cpu_to_le32((vid_pcp) << 16);
+ /* request tagging */
+ rp->tx_ring[entry].desc_length |= cpu_to_le32(0x020000);
+ }
+ else
+ rp->tx_ring[entry].tx_status = 0;
+
+ netdev_sent_queue(dev, skb->len);
+ /* lock eth irq */
+ dma_wmb();
+ rp->tx_ring[entry].tx_status |= cpu_to_le32(DescOwn);
+ wmb();
+
+ rp->cur_tx++;
+ /*
+ * Nobody wants cur_tx write to rot for ages after the NIC will have
+ * seen the transmit request, especially as the transmit completion
+ * handler could miss it.
+ */
+ smp_wmb();
+
+ /* Non-x86 Todo: explicitly flush cache lines here. */
+
+ if (skb_vlan_tag_present(skb))
+ /* Tx queues are bits 7-0 (first Tx queue: bit 7) */
+ BYTE_REG_BITS_ON(1 << 7, ioaddr + TQWake);
+
+ /* Wake the potentially-idle transmit channel */
+ iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1TxDemand,
+ ioaddr + ChipCmd1);
+ IOSYNC;
+
+ /* dirty_tx may be pessimistically out-of-sync. See rhine_tx. */
+ if (rhine_tx_queue_full(rp)) {
+ netif_stop_queue(dev);
+ smp_rmb();
+ /* Rejuvenate. */
+ if (!rhine_tx_queue_full(rp))
+ netif_wake_queue(dev);
+ }
+
+ netif_dbg(rp, tx_queued, dev, "Transmit frame #%d queued in slot %d\n",
+ rp->cur_tx - 1, entry);
+
+ return NETDEV_TX_OK;
+}
+
+static void rhine_irq_disable(struct rhine_private *rp)
+{
+ iowrite16(0x0000, rp->base + IntrEnable);
+}
+
+/* The interrupt handler does all of the Rx thread work and cleans up
+ after the Tx thread. */
+static irqreturn_t rhine_interrupt(int irq, void *dev_instance)
+{
+ struct net_device *dev = dev_instance;
+ struct rhine_private *rp = netdev_priv(dev);
+ u32 status;
+ int handled = 0;
+
+ status = rhine_get_events(rp);
+
+ netif_dbg(rp, intr, dev, "Interrupt, status %08x\n", status);
+
+ if (status & RHINE_EVENT) {
+ handled = 1;
+
+ rhine_irq_disable(rp);
+ napi_schedule(&rp->napi);
+ }
+
+ if (status & ~(IntrLinkChange | IntrStatsMax | RHINE_EVENT_NAPI)) {
+ netif_err(rp, intr, dev, "Something Wicked happened! %08x\n",
+ status);
+ }
+
+ return IRQ_RETVAL(handled);
+}
+
+/* This routine is logically part of the interrupt handler, but isolated
+ for clarity. */
+static void rhine_tx(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
+ unsigned int pkts_compl = 0, bytes_compl = 0;
+ unsigned int dirty_tx = rp->dirty_tx;
+ unsigned int cur_tx;
+ struct sk_buff *skb;
+
+ /*
+ * The race with rhine_start_tx does not matter here as long as the
+ * driver enforces a value of cur_tx that was relevant when the
+ * packet was scheduled to the network chipset.
+ * Executive summary: smp_rmb() balances smp_wmb() in rhine_start_tx.
+ */
+ smp_rmb();
+ cur_tx = rp->cur_tx;
+ /* find and cleanup dirty tx descriptors */
+ while (dirty_tx != cur_tx) {
+ unsigned int entry = dirty_tx % TX_RING_SIZE;
+ u32 txstatus = le32_to_cpu(rp->tx_ring[entry].tx_status);
+
+ netif_dbg(rp, tx_done, dev, "Tx scavenge %d status %08x\n",
+ entry, txstatus);
+ if (txstatus & DescOwn)
+ break;
+ skb = rp->tx_skbuff[entry];
+ if (txstatus & 0x8000) {
+ netif_dbg(rp, tx_done, dev,
+ "Transmit error, Tx status %08x\n", txstatus);
+ dev->stats.tx_errors++;
+ if (txstatus & 0x0400)
+ dev->stats.tx_carrier_errors++;
+ if (txstatus & 0x0200)
+ dev->stats.tx_window_errors++;
+ if (txstatus & 0x0100)
+ dev->stats.tx_aborted_errors++;
+ if (txstatus & 0x0080)
+ dev->stats.tx_heartbeat_errors++;
+ if (((rp->quirks & rqRhineI) && txstatus & 0x0002) ||
+ (txstatus & 0x0800) || (txstatus & 0x1000)) {
+ dev->stats.tx_fifo_errors++;
+ rp->tx_ring[entry].tx_status = cpu_to_le32(DescOwn);
+ break; /* Keep the skb - we try again */
+ }
+ /* Transmitter restarted in 'abnormal' handler. */
+ } else {
+ if (rp->quirks & rqRhineI)
+ dev->stats.collisions += (txstatus >> 3) & 0x0F;
+ else
+ dev->stats.collisions += txstatus & 0x0F;
+ netif_dbg(rp, tx_done, dev, "collisions: %1.1x:%1.1x\n",
+ (txstatus >> 3) & 0xF, txstatus & 0xF);
+
+ u64_stats_update_begin(&rp->tx_stats.syncp);
+ rp->tx_stats.bytes += skb->len;
+ rp->tx_stats.packets++;
+ u64_stats_update_end(&rp->tx_stats.syncp);
+ }
+ /* Free the original skb. */
+ if (rp->tx_skbuff_dma[entry]) {
+ dma_unmap_single(hwdev,
+ rp->tx_skbuff_dma[entry],
+ skb->len,
+ DMA_TO_DEVICE);
+ }
+ bytes_compl += skb->len;
+ pkts_compl++;
+ dev_consume_skb_any(skb);
+ rp->tx_skbuff[entry] = NULL;
+ dirty_tx++;
+ }
+
+ rp->dirty_tx = dirty_tx;
+ /* Pity we can't rely on the nearby BQL completion implicit barrier. */
+ smp_wmb();
+
+ netdev_completed_queue(dev, pkts_compl, bytes_compl);
+
+ /* cur_tx may be optimistically out-of-sync. See rhine_start_tx. */
+ if (!rhine_tx_queue_full(rp) && netif_queue_stopped(dev)) {
+ netif_wake_queue(dev);
+ smp_rmb();
+ /* Rejuvenate. */
+ if (rhine_tx_queue_full(rp))
+ netif_stop_queue(dev);
+ }
+}
+
+/**
+ * rhine_get_vlan_tci - extract TCI from Rx data buffer
+ * @skb: pointer to sk_buff
+ * @data_size: used data area of the buffer including CRC
+ *
+ * If hardware VLAN tag extraction is enabled and the chip indicates a 802.1Q
+ * packet, the extracted 802.1Q header (2 bytes TPID + 2 bytes TCI) is 4-byte
+ * aligned following the CRC.
+ */
+static inline u16 rhine_get_vlan_tci(struct sk_buff *skb, int data_size)
+{
+ u8 *trailer = (u8 *)skb->data + ((data_size + 3) & ~3) + 2;
+ return be16_to_cpup((__be16 *)trailer);
+}
+
+static inline void rhine_rx_vlan_tag(struct sk_buff *skb, struct rx_desc *desc,
+ int data_size)
+{
+ dma_rmb();
+ if (unlikely(desc->desc_length & cpu_to_le32(DescTag))) {
+ u16 vlan_tci;
+
+ vlan_tci = rhine_get_vlan_tci(skb, data_size);
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci);
+ }
+}
+
+/* Process up to limit frames from receive ring */
+static int rhine_rx(struct net_device *dev, int limit)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ struct device *hwdev = dev->dev.parent;
+ int entry = rp->cur_rx % RX_RING_SIZE;
+ int count;
+
+ netif_dbg(rp, rx_status, dev, "%s(), entry %d status %08x\n", __func__,
+ entry, le32_to_cpu(rp->rx_ring[entry].rx_status));
+
+ /* If EOP is set on the next entry, it's a new packet. Send it up. */
+ for (count = 0; count < limit; ++count) {
+ struct rx_desc *desc = rp->rx_ring + entry;
+ u32 desc_status = le32_to_cpu(desc->rx_status);
+ int data_size = desc_status >> 16;
+
+ if (desc_status & DescOwn)
+ break;
+
+ netif_dbg(rp, rx_status, dev, "%s() status %08x\n", __func__,
+ desc_status);
+
+ if ((desc_status & (RxWholePkt | RxErr)) != RxWholePkt) {
+ if ((desc_status & RxWholePkt) != RxWholePkt) {
+ netdev_warn(dev,
+ "Oversized Ethernet frame spanned multiple buffers, "
+ "entry %#x length %d status %08x!\n",
+ entry, data_size,
+ desc_status);
+ dev->stats.rx_length_errors++;
+ } else if (desc_status & RxErr) {
+ /* There was a error. */
+ netif_dbg(rp, rx_err, dev,
+ "%s() Rx error %08x\n", __func__,
+ desc_status);
+ dev->stats.rx_errors++;
+ if (desc_status & 0x0030)
+ dev->stats.rx_length_errors++;
+ if (desc_status & 0x0048)
+ dev->stats.rx_fifo_errors++;
+ if (desc_status & 0x0004)
+ dev->stats.rx_frame_errors++;
+ if (desc_status & 0x0002) {
+ /* this can also be updated outside the interrupt handler */
+ spin_lock(&rp->lock);
+ dev->stats.rx_crc_errors++;
+ spin_unlock(&rp->lock);
+ }
+ }
+ } else {
+ /* Length should omit the CRC */
+ int pkt_len = data_size - 4;
+ struct sk_buff *skb;
+
+ /* 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_ip_align(dev, pkt_len);
+ if (unlikely(!skb))
+ goto drop;
+
+ dma_sync_single_for_cpu(hwdev,
+ rp->rx_skbuff_dma[entry],
+ rp->rx_buf_sz,
+ DMA_FROM_DEVICE);
+
+ skb_copy_to_linear_data(skb,
+ rp->rx_skbuff[entry]->data,
+ pkt_len);
+
+ dma_sync_single_for_device(hwdev,
+ rp->rx_skbuff_dma[entry],
+ rp->rx_buf_sz,
+ DMA_FROM_DEVICE);
+ } else {
+ struct rhine_skb_dma sd;
+
+ if (unlikely(rhine_skb_dma_init(dev, &sd) < 0))
+ goto drop;
+
+ skb = rp->rx_skbuff[entry];
+
+ dma_unmap_single(hwdev,
+ rp->rx_skbuff_dma[entry],
+ rp->rx_buf_sz,
+ DMA_FROM_DEVICE);
+ rhine_skb_dma_nic_store(rp, &sd, entry);
+ }
+
+ skb_put(skb, pkt_len);
+
+ rhine_rx_vlan_tag(skb, desc, data_size);
+
+ skb->protocol = eth_type_trans(skb, dev);
+
+ netif_receive_skb(skb);
+
+ u64_stats_update_begin(&rp->rx_stats.syncp);
+ rp->rx_stats.bytes += pkt_len;
+ rp->rx_stats.packets++;
+ u64_stats_update_end(&rp->rx_stats.syncp);
+ }
+give_descriptor_to_nic:
+ desc->rx_status = cpu_to_le32(DescOwn);
+ entry = (++rp->cur_rx) % RX_RING_SIZE;
+ }
+
+ return count;
+
+drop:
+ dev->stats.rx_dropped++;
+ goto give_descriptor_to_nic;
+}
+
+static void rhine_restart_tx(struct net_device *dev) {
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+ int entry = rp->dirty_tx % TX_RING_SIZE;
+ u32 intr_status;
+
+ /*
+ * If new errors occurred, we need to sort them out before doing Tx.
+ * In that case the ISR will be back here RSN anyway.
+ */
+ intr_status = rhine_get_events(rp);
+
+ if ((intr_status & IntrTxErrSummary) == 0) {
+
+ /* We know better than the chip where it should continue. */
+ iowrite32(rp->tx_ring_dma + entry * sizeof(struct tx_desc),
+ ioaddr + TxRingPtr);
+
+ iowrite8(ioread8(ioaddr + ChipCmd) | CmdTxOn,
+ ioaddr + ChipCmd);
+
+ if (rp->tx_ring[entry].desc_length & cpu_to_le32(0x020000))
+ /* Tx queues are bits 7-0 (first Tx queue: bit 7) */
+ BYTE_REG_BITS_ON(1 << 7, ioaddr + TQWake);
+
+ iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1TxDemand,
+ ioaddr + ChipCmd1);
+ IOSYNC;
+ }
+ else {
+ /* This should never happen */
+ netif_warn(rp, tx_err, dev, "another error occurred %08x\n",
+ intr_status);
+ }
+
+}
+
+static void rhine_slow_event_task(struct work_struct *work)
+{
+ struct rhine_private *rp =
+ container_of(work, struct rhine_private, slow_event_task);
+ struct net_device *dev = rp->dev;
+ u32 intr_status;
+
+ mutex_lock(&rp->task_lock);
+
+ if (!rp->task_enable)
+ goto out_unlock;
+
+ intr_status = rhine_get_events(rp);
+ rhine_ack_events(rp, intr_status & RHINE_EVENT_SLOW);
+
+ if (intr_status & IntrLinkChange)
+ rhine_check_media(dev, 0);
+
+ if (intr_status & IntrPCIErr)
+ netif_warn(rp, hw, dev, "PCI error\n");
+
+ iowrite16(RHINE_EVENT & 0xffff, rp->base + IntrEnable);
+
+out_unlock:
+ mutex_unlock(&rp->task_lock);
+}
+
+static void
+rhine_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ unsigned int start;
+
+ spin_lock_bh(&rp->lock);
+ rhine_update_rx_crc_and_missed_errord(rp);
+ spin_unlock_bh(&rp->lock);
+
+ netdev_stats_to_stats64(stats, &dev->stats);
+
+ do {
+ start = u64_stats_fetch_begin_irq(&rp->rx_stats.syncp);
+ stats->rx_packets = rp->rx_stats.packets;
+ stats->rx_bytes = rp->rx_stats.bytes;
+ } while (u64_stats_fetch_retry_irq(&rp->rx_stats.syncp, start));
+
+ do {
+ start = u64_stats_fetch_begin_irq(&rp->tx_stats.syncp);
+ stats->tx_packets = rp->tx_stats.packets;
+ stats->tx_bytes = rp->tx_stats.bytes;
+ } while (u64_stats_fetch_retry_irq(&rp->tx_stats.syncp, start));
+}
+
+static void rhine_set_rx_mode(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+ u32 mc_filter[2]; /* Multicast hash filter */
+ u8 rx_mode = 0x0C; /* Note: 0x02=accept runt, 0x01=accept errs */
+ struct netdev_hw_addr *ha;
+
+ if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
+ rx_mode = 0x1C;
+ iowrite32(0xffffffff, ioaddr + MulticastFilter0);
+ iowrite32(0xffffffff, ioaddr + MulticastFilter1);
+ } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
+ (dev->flags & IFF_ALLMULTI)) {
+ /* Too many to match, or accept all multicasts. */
+ iowrite32(0xffffffff, ioaddr + MulticastFilter0);
+ iowrite32(0xffffffff, ioaddr + MulticastFilter1);
+ } else if (rp->quirks & rqMgmt) {
+ int i = 0;
+ u32 mCAMmask = 0; /* 32 mCAMs (6105M and better) */
+ netdev_for_each_mc_addr(ha, dev) {
+ if (i == MCAM_SIZE)
+ break;
+ rhine_set_cam(ioaddr, i, ha->addr);
+ mCAMmask |= 1 << i;
+ i++;
+ }
+ rhine_set_cam_mask(ioaddr, mCAMmask);
+ } else {
+ memset(mc_filter, 0, sizeof(mc_filter));
+ netdev_for_each_mc_addr(ha, dev) {
+ int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
+
+ mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
+ }
+ iowrite32(mc_filter[0], ioaddr + MulticastFilter0);
+ iowrite32(mc_filter[1], ioaddr + MulticastFilter1);
+ }
+ /* enable/disable VLAN receive filtering */
+ if (rp->quirks & rqMgmt) {
+ if (dev->flags & IFF_PROMISC)
+ BYTE_REG_BITS_OFF(BCR1_VIDFR, ioaddr + PCIBusConfig1);
+ else
+ BYTE_REG_BITS_ON(BCR1_VIDFR, ioaddr + PCIBusConfig1);
+ }
+ BYTE_REG_BITS_ON(rx_mode, ioaddr + RxConfig);
+}
+
+static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+ struct device *hwdev = dev->dev.parent;
+
+ strscpy(info->driver, DRV_NAME, sizeof(info->driver));
+ strscpy(info->bus_info, dev_name(hwdev), sizeof(info->bus_info));
+}
+
+static int netdev_get_link_ksettings(struct net_device *dev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ mutex_lock(&rp->task_lock);
+ mii_ethtool_get_link_ksettings(&rp->mii_if, cmd);
+ mutex_unlock(&rp->task_lock);
+
+ return 0;
+}
+
+static int netdev_set_link_ksettings(struct net_device *dev,
+ const struct ethtool_link_ksettings *cmd)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ int rc;
+
+ mutex_lock(&rp->task_lock);
+ rc = mii_ethtool_set_link_ksettings(&rp->mii_if, cmd);
+ rhine_set_carrier(&rp->mii_if);
+ mutex_unlock(&rp->task_lock);
+
+ return rc;
+}
+
+static int netdev_nway_reset(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ return mii_nway_restart(&rp->mii_if);
+}
+
+static u32 netdev_get_link(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ return mii_link_ok(&rp->mii_if);
+}
+
+static u32 netdev_get_msglevel(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ return rp->msg_enable;
+}
+
+static void netdev_set_msglevel(struct net_device *dev, u32 value)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ rp->msg_enable = value;
+}
+
+static void rhine_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ if (!(rp->quirks & rqWOL))
+ return;
+
+ spin_lock_irq(&rp->lock);
+ wol->supported = WAKE_PHY | WAKE_MAGIC |
+ WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; /* Untested */
+ wol->wolopts = rp->wolopts;
+ spin_unlock_irq(&rp->lock);
+}
+
+static int rhine_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ u32 support = WAKE_PHY | WAKE_MAGIC |
+ WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; /* Untested */
+
+ if (!(rp->quirks & rqWOL))
+ return -EINVAL;
+
+ if (wol->wolopts & ~support)
+ return -EINVAL;
+
+ spin_lock_irq(&rp->lock);
+ rp->wolopts = wol->wolopts;
+ spin_unlock_irq(&rp->lock);
+
+ return 0;
+}
+
+static const struct ethtool_ops netdev_ethtool_ops = {
+ .get_drvinfo = netdev_get_drvinfo,
+ .nway_reset = netdev_nway_reset,
+ .get_link = netdev_get_link,
+ .get_msglevel = netdev_get_msglevel,
+ .set_msglevel = netdev_set_msglevel,
+ .get_wol = rhine_get_wol,
+ .set_wol = rhine_set_wol,
+ .get_link_ksettings = netdev_get_link_ksettings,
+ .set_link_ksettings = netdev_set_link_ksettings,
+};
+
+static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ int rc;
+
+ if (!netif_running(dev))
+ return -EINVAL;
+
+ mutex_lock(&rp->task_lock);
+ rc = generic_mii_ioctl(&rp->mii_if, if_mii(rq), cmd, NULL);
+ rhine_set_carrier(&rp->mii_if);
+ mutex_unlock(&rp->task_lock);
+
+ return rc;
+}
+
+static int rhine_close(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+
+ rhine_task_disable(rp);
+ napi_disable(&rp->napi);
+ netif_stop_queue(dev);
+
+ netif_dbg(rp, ifdown, dev, "Shutting down ethercard, status was %04x\n",
+ ioread16(ioaddr + ChipCmd));
+
+ /* Switch to loopback mode to avoid hardware races. */
+ iowrite8(rp->tx_thresh | 0x02, ioaddr + TxConfig);
+
+ rhine_irq_disable(rp);
+
+ /* Stop the chip's Tx and Rx processes. */
+ iowrite16(CmdStop, ioaddr + ChipCmd);
+
+ free_irq(rp->irq, dev);
+ free_rbufs(dev);
+ free_tbufs(dev);
+ free_ring(dev);
+
+ return 0;
+}
+
+
+static void rhine_remove_one_pci(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct rhine_private *rp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+
+ pci_iounmap(pdev, rp->base);
+ pci_release_regions(pdev);
+
+ free_netdev(dev);
+ pci_disable_device(pdev);
+}
+
+static int rhine_remove_one_platform(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct rhine_private *rp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+
+ iounmap(rp->base);
+
+ free_netdev(dev);
+
+ return 0;
+}
+
+static void rhine_shutdown_pci(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+
+ if (!(rp->quirks & rqWOL))
+ return; /* Nothing to do for non-WOL adapters */
+
+ rhine_power_init(dev);
+
+ /* Make sure we use pattern 0, 1 and not 4, 5 */
+ if (rp->quirks & rq6patterns)
+ iowrite8(0x04, ioaddr + WOLcgClr);
+
+ spin_lock(&rp->lock);
+
+ if (rp->wolopts & WAKE_MAGIC) {
+ iowrite8(WOLmagic, ioaddr + WOLcrSet);
+ /*
+ * Turn EEPROM-controlled wake-up back on -- some hardware may
+ * not cooperate otherwise.
+ */
+ iowrite8(ioread8(ioaddr + ConfigA) | 0x03, ioaddr + ConfigA);
+ }
+
+ if (rp->wolopts & (WAKE_BCAST|WAKE_MCAST))
+ iowrite8(WOLbmcast, ioaddr + WOLcgSet);
+
+ if (rp->wolopts & WAKE_PHY)
+ iowrite8(WOLlnkon | WOLlnkoff, ioaddr + WOLcrSet);
+
+ if (rp->wolopts & WAKE_UCAST)
+ iowrite8(WOLucast, ioaddr + WOLcrSet);
+
+ if (rp->wolopts) {
+ /* Enable legacy WOL (for old motherboards) */
+ iowrite8(0x01, ioaddr + PwcfgSet);
+ iowrite8(ioread8(ioaddr + StickyHW) | 0x04, ioaddr + StickyHW);
+ }
+
+ spin_unlock(&rp->lock);
+
+ if (system_state == SYSTEM_POWER_OFF && !avoid_D3) {
+ iowrite8(ioread8(ioaddr + StickyHW) | 0x03, ioaddr + StickyHW);
+
+ pci_wake_from_d3(pdev, true);
+ pci_set_power_state(pdev, PCI_D3hot);
+ }
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int rhine_suspend(struct device *device)
+{
+ struct net_device *dev = dev_get_drvdata(device);
+ struct rhine_private *rp = netdev_priv(dev);
+
+ if (!netif_running(dev))
+ return 0;
+
+ rhine_task_disable(rp);
+ rhine_irq_disable(rp);
+ napi_disable(&rp->napi);
+
+ netif_device_detach(dev);
+
+ if (dev_is_pci(device))
+ rhine_shutdown_pci(to_pci_dev(device));
+
+ return 0;
+}
+
+static int rhine_resume(struct device *device)
+{
+ struct net_device *dev = dev_get_drvdata(device);
+ struct rhine_private *rp = netdev_priv(dev);
+
+ if (!netif_running(dev))
+ return 0;
+
+ enable_mmio(rp->pioaddr, rp->quirks);
+ rhine_power_init(dev);
+ free_tbufs(dev);
+ alloc_tbufs(dev);
+ rhine_reset_rbufs(rp);
+ rhine_task_enable(rp);
+ spin_lock_bh(&rp->lock);
+ init_registers(dev);
+ spin_unlock_bh(&rp->lock);
+
+ netif_device_attach(dev);
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(rhine_pm_ops, rhine_suspend, rhine_resume);
+#define RHINE_PM_OPS (&rhine_pm_ops)
+
+#else
+
+#define RHINE_PM_OPS NULL
+
+#endif /* !CONFIG_PM_SLEEP */
+
+static struct pci_driver rhine_driver_pci = {
+ .name = DRV_NAME,
+ .id_table = rhine_pci_tbl,
+ .probe = rhine_init_one_pci,
+ .remove = rhine_remove_one_pci,
+ .shutdown = rhine_shutdown_pci,
+ .driver.pm = RHINE_PM_OPS,
+};
+
+static struct platform_driver rhine_driver_platform = {
+ .probe = rhine_init_one_platform,
+ .remove = rhine_remove_one_platform,
+ .driver = {
+ .name = DRV_NAME,
+ .of_match_table = rhine_of_tbl,
+ .pm = RHINE_PM_OPS,
+ }
+};
+
+static const struct dmi_system_id rhine_dmi_table[] __initconst = {
+ {
+ .ident = "EPIA-M",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Award Software International, Inc."),
+ DMI_MATCH(DMI_BIOS_VERSION, "6.00 PG"),
+ },
+ },
+ {
+ .ident = "KV7",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
+ DMI_MATCH(DMI_BIOS_VERSION, "6.00 PG"),
+ },
+ },
+ { NULL }
+};
+
+static int __init rhine_init(void)
+{
+ int ret_pci, ret_platform;
+
+/* when a module, this is printed whether or not devices are found in probe */
+ if (dmi_check_system(rhine_dmi_table)) {
+ /* these BIOSes fail at PXE boot if chip is in D3 */
+ avoid_D3 = true;
+ pr_warn("Broken BIOS detected, avoid_D3 enabled\n");
+ }
+ else if (avoid_D3)
+ pr_info("avoid_D3 set\n");
+
+ ret_pci = pci_register_driver(&rhine_driver_pci);
+ ret_platform = platform_driver_register(&rhine_driver_platform);
+ if ((ret_pci < 0) && (ret_platform < 0))
+ return ret_pci;
+
+ return 0;
+}
+
+
+static void __exit rhine_cleanup(void)
+{
+ platform_driver_unregister(&rhine_driver_platform);
+ pci_unregister_driver(&rhine_driver_pci);
+}
+
+
+module_init(rhine_init);
+module_exit(rhine_cleanup);