fealnx: Move the Myson driver

Move the Myson driver into drivers/net/ethernet/ and make the
necessary Kconfig and Makefile changes.

CC: Donald Becker <becker@scyld.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 1976 insertions, 0 deletions

diff --git a/drivers/net/ethernet/fealnx.c b/drivers/net/ethernet/fealnx.c
new file mode 100644
index 00000000000..fa8677c3238
--- /dev/null
+++ b/drivers/net/ethernet/fealnx.c
@@ -0,0 +1,1976 @@
+/*
+	Written 1998-2000 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 information and updates available at
+	http://www.scyld.com/network/pci-skeleton.html
+
+	Linux kernel updates:
+
+	Version 2.51, Nov 17, 2001 (jgarzik):
+	- Add ethtool support
+	- Replace some MII-related magic numbers with constants
+
+*/
+
+#define DRV_NAME	"fealnx"
+#define DRV_VERSION	"2.52"
+#define DRV_RELDATE	"Sep-11-2006"
+
+static int debug;		/* 1-> print debug message */
+static int max_interrupt_work = 20;
+
+/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */
+static int multicast_filter_limit = 32;
+
+/* Set the copy breakpoint for the copy-only-tiny-frames scheme. */
+/* Setting to > 1518 effectively disables this feature.          */
+static int rx_copybreak;
+
+/* Used to pass the media type, etc.                            */
+/* Both 'options[]' and 'full_duplex[]' should exist for driver */
+/* interoperability.                                            */
+/* The media type is usually passed in 'options[]'.             */
+#define MAX_UNITS 8		/* More are supported, limit only on options */
+static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
+static int full_duplex[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
+
+/* 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.                                         */
+/* There are no ill effects from too-large receive rings.               */
+// 88-12-9 modify,
+// #define TX_RING_SIZE    16
+// #define RX_RING_SIZE    32
+#define TX_RING_SIZE    6
+#define RX_RING_SIZE    12
+#define TX_TOTAL_SIZE	TX_RING_SIZE*sizeof(struct fealnx_desc)
+#define RX_TOTAL_SIZE	RX_RING_SIZE*sizeof(struct fealnx_desc)
+
+/* 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 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/mii.h>
+#include <linux/ethtool.h>
+#include <linux/crc32.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+
+#include <asm/processor.h>	/* Processor type for cache alignment. */
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/byteorder.h>
+
+/* These identify the driver base version and may not be removed. */
+static const char version[] __devinitconst =
+	KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE "\n";
+
+
+/* This driver was written to use PCI memory space, however some x86 systems
+   work only with I/O space accesses. */
+#ifndef __alpha__
+#define USE_IO_OPS
+#endif
+
+/* Kernel compatibility defines, some common to David Hinds' PCMCIA package. */
+/* This is only in the support-all-kernels source code. */
+
+#define RUN_AT(x) (jiffies + (x))
+
+MODULE_AUTHOR("Myson or whoever");
+MODULE_DESCRIPTION("Myson MTD-8xx 100/10M Ethernet PCI Adapter Driver");
+MODULE_LICENSE("GPL");
+module_param(max_interrupt_work, int, 0);
+module_param(debug, int, 0);
+module_param(rx_copybreak, int, 0);
+module_param(multicast_filter_limit, int, 0);
+module_param_array(options, int, NULL, 0);
+module_param_array(full_duplex, int, NULL, 0);
+MODULE_PARM_DESC(max_interrupt_work, "fealnx maximum events handled per interrupt");
+MODULE_PARM_DESC(debug, "fealnx enable debugging (0-1)");
+MODULE_PARM_DESC(rx_copybreak, "fealnx copy breakpoint for copy-only-tiny-frames");
+MODULE_PARM_DESC(multicast_filter_limit, "fealnx maximum number of filtered multicast addresses");
+MODULE_PARM_DESC(options, "fealnx: Bits 0-3: media type, bit 17: full duplex");
+MODULE_PARM_DESC(full_duplex, "fealnx full duplex setting(s) (1)");
+
+enum {
+	MIN_REGION_SIZE		= 136,
+};
+
+/* A chip capabilities table, matching the entries in pci_tbl[] above. */
+enum chip_capability_flags {
+	HAS_MII_XCVR,
+	HAS_CHIP_XCVR,
+};
+
+/* 89/6/13 add, */
+/* for different PHY */
+enum phy_type_flags {
+	MysonPHY = 1,
+	AhdocPHY = 2,
+	SeeqPHY = 3,
+	MarvellPHY = 4,
+	Myson981 = 5,
+	LevelOnePHY = 6,
+	OtherPHY = 10,
+};
+
+struct chip_info {
+	char *chip_name;
+	int flags;
+};
+
+static const struct chip_info skel_netdrv_tbl[] __devinitdata = {
+ 	{ "100/10M Ethernet PCI Adapter",	HAS_MII_XCVR },
+	{ "100/10M Ethernet PCI Adapter",	HAS_CHIP_XCVR },
+	{ "1000/100/10M Ethernet PCI Adapter",	HAS_MII_XCVR },
+};
+
+/* Offsets to the Command and Status Registers. */
+enum fealnx_offsets {
+	PAR0 = 0x0,		/* physical address 0-3 */
+	PAR1 = 0x04,		/* physical address 4-5 */
+	MAR0 = 0x08,		/* multicast address 0-3 */
+	MAR1 = 0x0C,		/* multicast address 4-7 */
+	FAR0 = 0x10,		/* flow-control address 0-3 */
+	FAR1 = 0x14,		/* flow-control address 4-5 */
+	TCRRCR = 0x18,		/* receive & transmit configuration */
+	BCR = 0x1C,		/* bus command */
+	TXPDR = 0x20,		/* transmit polling demand */
+	RXPDR = 0x24,		/* receive polling demand */
+	RXCWP = 0x28,		/* receive current word pointer */
+	TXLBA = 0x2C,		/* transmit list base address */
+	RXLBA = 0x30,		/* receive list base address */
+	ISR = 0x34,		/* interrupt status */
+	IMR = 0x38,		/* interrupt mask */
+	FTH = 0x3C,		/* flow control high/low threshold */
+	MANAGEMENT = 0x40,	/* bootrom/eeprom and mii management */
+	TALLY = 0x44,		/* tally counters for crc and mpa */
+	TSR = 0x48,		/* tally counter for transmit status */
+	BMCRSR = 0x4c,		/* basic mode control and status */
+	PHYIDENTIFIER = 0x50,	/* phy identifier */
+	ANARANLPAR = 0x54,	/* auto-negotiation advertisement and link
+				   partner ability */
+	ANEROCR = 0x58,		/* auto-negotiation expansion and pci conf. */
+	BPREMRPSR = 0x5c,	/* bypass & receive error mask and phy status */
+};
+
+/* Bits in the interrupt status/enable registers. */
+/* The bits in the Intr Status/Enable registers, mostly interrupt sources. */
+enum intr_status_bits {
+	RFCON = 0x00020000,	/* receive flow control xon packet */
+	RFCOFF = 0x00010000,	/* receive flow control xoff packet */
+	LSCStatus = 0x00008000,	/* link status change */
+	ANCStatus = 0x00004000,	/* autonegotiation completed */
+	FBE = 0x00002000,	/* fatal bus error */
+	FBEMask = 0x00001800,	/* mask bit12-11 */
+	ParityErr = 0x00000000,	/* parity error */
+	TargetErr = 0x00001000,	/* target abort */
+	MasterErr = 0x00000800,	/* master error */
+	TUNF = 0x00000400,	/* transmit underflow */
+	ROVF = 0x00000200,	/* receive overflow */
+	ETI = 0x00000100,	/* transmit early int */
+	ERI = 0x00000080,	/* receive early int */
+	CNTOVF = 0x00000040,	/* counter overflow */
+	RBU = 0x00000020,	/* receive buffer unavailable */
+	TBU = 0x00000010,	/* transmit buffer unavilable */
+	TI = 0x00000008,	/* transmit interrupt */
+	RI = 0x00000004,	/* receive interrupt */
+	RxErr = 0x00000002,	/* receive error */
+};
+
+/* Bits in the NetworkConfig register, W for writing, R for reading */
+/* FIXME: some names are invented by me. Marked with (name?) */
+/* If you have docs and know bit names, please fix 'em */
+enum rx_mode_bits {
+	CR_W_ENH	= 0x02000000,	/* enhanced mode (name?) */
+	CR_W_FD		= 0x00100000,	/* full duplex */
+	CR_W_PS10	= 0x00080000,	/* 10 mbit */
+	CR_W_TXEN	= 0x00040000,	/* tx enable (name?) */
+	CR_W_PS1000	= 0x00010000,	/* 1000 mbit */
+     /* CR_W_RXBURSTMASK= 0x00000e00, Im unsure about this */
+	CR_W_RXMODEMASK	= 0x000000e0,
+	CR_W_PROM	= 0x00000080,	/* promiscuous mode */
+	CR_W_AB		= 0x00000040,	/* accept broadcast */
+	CR_W_AM		= 0x00000020,	/* accept mutlicast */
+	CR_W_ARP	= 0x00000008,	/* receive runt pkt */
+	CR_W_ALP	= 0x00000004,	/* receive long pkt */
+	CR_W_SEP	= 0x00000002,	/* receive error pkt */
+	CR_W_RXEN	= 0x00000001,	/* rx enable (unicast?) (name?) */
+
+	CR_R_TXSTOP	= 0x04000000,	/* tx stopped (name?) */
+	CR_R_FD		= 0x00100000,	/* full duplex detected */
+	CR_R_PS10	= 0x00080000,	/* 10 mbit detected */
+	CR_R_RXSTOP	= 0x00008000,	/* rx stopped (name?) */
+};
+
+/* The Tulip Rx and Tx buffer descriptors. */
+struct fealnx_desc {
+	s32 status;
+	s32 control;
+	u32 buffer;
+	u32 next_desc;
+	struct fealnx_desc *next_desc_logical;
+	struct sk_buff *skbuff;
+	u32 reserved1;
+	u32 reserved2;
+};
+
+/* Bits in network_desc.status */
+enum rx_desc_status_bits {
+	RXOWN = 0x80000000,	/* own bit */
+	FLNGMASK = 0x0fff0000,	/* frame length */
+	FLNGShift = 16,
+	MARSTATUS = 0x00004000,	/* multicast address received */
+	BARSTATUS = 0x00002000,	/* broadcast address received */
+	PHYSTATUS = 0x00001000,	/* physical address received */
+	RXFSD = 0x00000800,	/* first descriptor */
+	RXLSD = 0x00000400,	/* last descriptor */
+	ErrorSummary = 0x80,	/* error summary */
+	RUNT = 0x40,		/* runt packet received */
+	LONG = 0x20,		/* long packet received */
+	FAE = 0x10,		/* frame align error */
+	CRC = 0x08,		/* crc error */
+	RXER = 0x04,		/* receive error */
+};
+
+enum rx_desc_control_bits {
+	RXIC = 0x00800000,	/* interrupt control */
+	RBSShift = 0,
+};
+
+enum tx_desc_status_bits {
+	TXOWN = 0x80000000,	/* own bit */
+	JABTO = 0x00004000,	/* jabber timeout */
+	CSL = 0x00002000,	/* carrier sense lost */
+	LC = 0x00001000,	/* late collision */
+	EC = 0x00000800,	/* excessive collision */
+	UDF = 0x00000400,	/* fifo underflow */
+	DFR = 0x00000200,	/* deferred */
+	HF = 0x00000100,	/* heartbeat fail */
+	NCRMask = 0x000000ff,	/* collision retry count */
+	NCRShift = 0,
+};
+
+enum tx_desc_control_bits {
+	TXIC = 0x80000000,	/* interrupt control */
+	ETIControl = 0x40000000,	/* early transmit interrupt */
+	TXLD = 0x20000000,	/* last descriptor */
+	TXFD = 0x10000000,	/* first descriptor */
+	CRCEnable = 0x08000000,	/* crc control */
+	PADEnable = 0x04000000,	/* padding control */
+	RetryTxLC = 0x02000000,	/* retry late collision */
+	PKTSMask = 0x3ff800,	/* packet size bit21-11 */
+	PKTSShift = 11,
+	TBSMask = 0x000007ff,	/* transmit buffer bit 10-0 */
+	TBSShift = 0,
+};
+
+/* BootROM/EEPROM/MII Management Register */
+#define MASK_MIIR_MII_READ       0x00000000
+#define MASK_MIIR_MII_WRITE      0x00000008
+#define MASK_MIIR_MII_MDO        0x00000004
+#define MASK_MIIR_MII_MDI        0x00000002
+#define MASK_MIIR_MII_MDC        0x00000001
+
+/* ST+OP+PHYAD+REGAD+TA */
+#define OP_READ             0x6000	/* ST:01+OP:10+PHYAD+REGAD+TA:Z0 */
+#define OP_WRITE            0x5002	/* ST:01+OP:01+PHYAD+REGAD+TA:10 */
+
+/* ------------------------------------------------------------------------- */
+/*      Constants for Myson PHY                                              */
+/* ------------------------------------------------------------------------- */
+#define MysonPHYID      0xd0000302
+/* 89-7-27 add, (begin) */
+#define MysonPHYID0     0x0302
+#define StatusRegister  18
+#define SPEED100        0x0400	// bit10
+#define FULLMODE        0x0800	// bit11
+/* 89-7-27 add, (end) */
+
+/* ------------------------------------------------------------------------- */
+/*      Constants for Seeq 80225 PHY                                         */
+/* ------------------------------------------------------------------------- */
+#define SeeqPHYID0      0x0016
+
+#define MIIRegister18   18
+#define SPD_DET_100     0x80
+#define DPLX_DET_FULL   0x40
+
+/* ------------------------------------------------------------------------- */
+/*      Constants for Ahdoc 101 PHY                                          */
+/* ------------------------------------------------------------------------- */
+#define AhdocPHYID0     0x0022
+
+#define DiagnosticReg   18
+#define DPLX_FULL       0x0800
+#define Speed_100       0x0400
+
+/* 89/6/13 add, */
+/* -------------------------------------------------------------------------- */
+/*      Constants                                                             */
+/* -------------------------------------------------------------------------- */
+#define MarvellPHYID0           0x0141
+#define LevelOnePHYID0		0x0013
+
+#define MII1000BaseTControlReg  9
+#define MII1000BaseTStatusReg   10
+#define SpecificReg		17
+
+/* for 1000BaseT Control Register */
+#define PHYAbletoPerform1000FullDuplex  0x0200
+#define PHYAbletoPerform1000HalfDuplex  0x0100
+#define PHY1000AbilityMask              0x300
+
+// for phy specific status register, marvell phy.
+#define SpeedMask       0x0c000
+#define Speed_1000M     0x08000
+#define Speed_100M      0x4000
+#define Speed_10M       0
+#define Full_Duplex     0x2000
+
+// 89/12/29 add, for phy specific status register, levelone phy, (begin)
+#define LXT1000_100M    0x08000
+#define LXT1000_1000M   0x0c000
+#define LXT1000_Full    0x200
+// 89/12/29 add, for phy specific status register, levelone phy, (end)
+
+/* for 3-in-1 case, BMCRSR register */
+#define LinkIsUp2	0x00040000
+
+/* for PHY */
+#define LinkIsUp        0x0004
+
+
+struct netdev_private {
+	/* Descriptor rings first for alignment. */
+	struct fealnx_desc *rx_ring;
+	struct fealnx_desc *tx_ring;
+
+	dma_addr_t rx_ring_dma;
+	dma_addr_t tx_ring_dma;
+
+	spinlock_t lock;
+
+	/* Media monitoring timer. */
+	struct timer_list timer;
+
+	/* Reset timer */
+	struct timer_list reset_timer;
+	int reset_timer_armed;
+	unsigned long crvalue_sv;
+	unsigned long imrvalue_sv;
+
+	/* Frequently used values: keep some adjacent for cache effect. */
+	int flags;
+	struct pci_dev *pci_dev;
+	unsigned long crvalue;
+	unsigned long bcrvalue;
+	unsigned long imrvalue;
+	struct fealnx_desc *cur_rx;
+	struct fealnx_desc *lack_rxbuf;
+	int really_rx_count;
+	struct fealnx_desc *cur_tx;
+	struct fealnx_desc *cur_tx_copy;
+	int really_tx_count;
+	int free_tx_count;
+	unsigned int rx_buf_sz;	/* Based on MTU+slack. */
+
+	/* These values are keep track of the transceiver/media in use. */
+	unsigned int linkok;
+	unsigned int line_speed;
+	unsigned int duplexmode;
+	unsigned int default_port:4;	/* Last dev->if_port value. */
+	unsigned int PHYType;
+
+	/* MII transceiver section. */
+	int mii_cnt;		/* MII device addresses. */
+	unsigned char phys[2];	/* MII device addresses. */
+	struct mii_if_info mii;
+	void __iomem *mem;
+};
+
+
+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 netdev_open(struct net_device *dev);
+static void getlinktype(struct net_device *dev);
+static void getlinkstatus(struct net_device *dev);
+static void netdev_timer(unsigned long data);
+static void reset_timer(unsigned long data);
+static void fealnx_tx_timeout(struct net_device *dev);
+static void init_ring(struct net_device *dev);
+static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t intr_handler(int irq, void *dev_instance);
+static int netdev_rx(struct net_device *dev);
+static void set_rx_mode(struct net_device *dev);
+static void __set_rx_mode(struct net_device *dev);
+static struct net_device_stats *get_stats(struct net_device *dev);
+static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static const struct ethtool_ops netdev_ethtool_ops;
+static int netdev_close(struct net_device *dev);
+static void reset_rx_descriptors(struct net_device *dev);
+static void reset_tx_descriptors(struct net_device *dev);
+
+static void stop_nic_rx(void __iomem *ioaddr, long crvalue)
+{
+	int delay = 0x1000;
+	iowrite32(crvalue & ~(CR_W_RXEN), ioaddr + TCRRCR);
+	while (--delay) {
+		if ( (ioread32(ioaddr + TCRRCR) & CR_R_RXSTOP) == CR_R_RXSTOP)
+			break;
+	}
+}
+
+
+static void stop_nic_rxtx(void __iomem *ioaddr, long crvalue)
+{
+	int delay = 0x1000;
+	iowrite32(crvalue & ~(CR_W_RXEN+CR_W_TXEN), ioaddr + TCRRCR);
+	while (--delay) {
+		if ( (ioread32(ioaddr + TCRRCR) & (CR_R_RXSTOP+CR_R_TXSTOP))
+					    == (CR_R_RXSTOP+CR_R_TXSTOP) )
+			break;
+	}
+}
+
+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_multicast_list = set_rx_mode,
+	.ndo_do_ioctl		= mii_ioctl,
+	.ndo_tx_timeout		= fealnx_tx_timeout,
+	.ndo_change_mtu		= eth_change_mtu,
+	.ndo_set_mac_address 	= eth_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+};
+
+static int __devinit fealnx_init_one(struct pci_dev *pdev,
+				     const struct pci_device_id *ent)
+{
+	struct netdev_private *np;
+	int i, option, err, irq;
+	static int card_idx = -1;
+	char boardname[12];
+	void __iomem *ioaddr;
+	unsigned long len;
+	unsigned int chip_id = ent->driver_data;
+	struct net_device *dev;
+	void *ring_space;
+	dma_addr_t ring_dma;
+#ifdef USE_IO_OPS
+	int bar = 0;
+#else
+	int bar = 1;
+#endif
+
+/* when built into the kernel, we only print version if device is found */
+#ifndef MODULE
+	static int printed_version;
+	if (!printed_version++)
+		printk(version);
+#endif
+
+	card_idx++;
+	sprintf(boardname, "fealnx%d", card_idx);
+
+	option = card_idx < MAX_UNITS ? options[card_idx] : 0;
+
+	i = pci_enable_device(pdev);
+	if (i) return i;
+	pci_set_master(pdev);
+
+	len = pci_resource_len(pdev, bar);
+	if (len < MIN_REGION_SIZE) {
+		dev_err(&pdev->dev,
+			   "region size %ld too small, aborting\n", len);
+		return -ENODEV;
+	}
+
+	i = pci_request_regions(pdev, boardname);
+	if (i)
+		return i;
+
+	irq = pdev->irq;
+
+	ioaddr = pci_iomap(pdev, bar, len);
+	if (!ioaddr) {
+		err = -ENOMEM;
+		goto err_out_res;
+	}
+
+	dev = alloc_etherdev(sizeof(struct netdev_private));
+	if (!dev) {
+		err = -ENOMEM;
+		goto err_out_unmap;
+	}
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+	/* read ethernet id */
+	for (i = 0; i < 6; ++i)
+		dev->dev_addr[i] = ioread8(ioaddr + PAR0 + i);
+
+	/* Reset the chip to erase previous misconfiguration. */
+	iowrite32(0x00000001, ioaddr + BCR);
+
+	dev->base_addr = (unsigned long)ioaddr;
+	dev->irq = irq;
+
+	/* Make certain the descriptor lists are aligned. */
+	np = netdev_priv(dev);
+	np->mem = ioaddr;
+	spin_lock_init(&np->lock);
+	np->pci_dev = pdev;
+	np->flags = skel_netdrv_tbl[chip_id].flags;
+	pci_set_drvdata(pdev, dev);
+	np->mii.dev = dev;
+	np->mii.mdio_read = mdio_read;
+	np->mii.mdio_write = mdio_write;
+	np->mii.phy_id_mask = 0x1f;
+	np->mii.reg_num_mask = 0x1f;
+
+	ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
+	if (!ring_space) {
+		err = -ENOMEM;
+		goto err_out_free_dev;
+	}
+	np->rx_ring = ring_space;
+	np->rx_ring_dma = ring_dma;
+
+	ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
+	if (!ring_space) {
+		err = -ENOMEM;
+		goto err_out_free_rx;
+	}
+	np->tx_ring = ring_space;
+	np->tx_ring_dma = ring_dma;
+
+	/* find the connected MII xcvrs */
+	if (np->flags == HAS_MII_XCVR) {
+		int phy, phy_idx = 0;
+
+		for (phy = 1; phy < 32 && phy_idx < ARRAY_SIZE(np->phys);
+			       phy++) {
+			int mii_status = mdio_read(dev, phy, 1);
+
+			if (mii_status != 0xffff && mii_status != 0x0000) {
+				np->phys[phy_idx++] = phy;
+				dev_info(&pdev->dev,
+				       "MII PHY found at address %d, status "
+				       "0x%4.4x.\n", phy, mii_status);
+				/* get phy type */
+				{
+					unsigned int data;
+
+					data = mdio_read(dev, np->phys[0], 2);
+					if (data == SeeqPHYID0)
+						np->PHYType = SeeqPHY;
+					else if (data == AhdocPHYID0)
+						np->PHYType = AhdocPHY;
+					else if (data == MarvellPHYID0)
+						np->PHYType = MarvellPHY;
+					else if (data == MysonPHYID0)
+						np->PHYType = Myson981;
+					else if (data == LevelOnePHYID0)
+						np->PHYType = LevelOnePHY;
+					else
+						np->PHYType = OtherPHY;
+				}
+			}
+		}
+
+		np->mii_cnt = phy_idx;
+		if (phy_idx == 0)
+			dev_warn(&pdev->dev,
+				"MII PHY not found -- this device may "
+			       "not operate correctly.\n");
+	} else {
+		np->phys[0] = 32;
+/* 89/6/23 add, (begin) */
+		/* get phy type */
+		if (ioread32(ioaddr + PHYIDENTIFIER) == MysonPHYID)
+			np->PHYType = MysonPHY;
+		else
+			np->PHYType = OtherPHY;
+	}
+	np->mii.phy_id = np->phys[0];
+
+	if (dev->mem_start)
+		option = dev->mem_start;
+
+	/* The lower four bits are the media type. */
+	if (option > 0) {
+		if (option & 0x200)
+			np->mii.full_duplex = 1;
+		np->default_port = option & 15;
+	}
+
+	if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0)
+		np->mii.full_duplex = full_duplex[card_idx];
+
+	if (np->mii.full_duplex) {
+		dev_info(&pdev->dev, "Media type forced to Full Duplex.\n");
+/* 89/6/13 add, (begin) */
+//      if (np->PHYType==MarvellPHY)
+		if ((np->PHYType == MarvellPHY) || (np->PHYType == LevelOnePHY)) {
+			unsigned int data;
+
+			data = mdio_read(dev, np->phys[0], 9);
+			data = (data & 0xfcff) | 0x0200;
+			mdio_write(dev, np->phys[0], 9, data);
+		}
+/* 89/6/13 add, (end) */
+		if (np->flags == HAS_MII_XCVR)
+			mdio_write(dev, np->phys[0], MII_ADVERTISE, ADVERTISE_FULL);
+		else
+			iowrite32(ADVERTISE_FULL, ioaddr + ANARANLPAR);
+		np->mii.force_media = 1;
+	}
+
+	dev->netdev_ops = &netdev_ops;
+	dev->ethtool_ops = &netdev_ethtool_ops;
+	dev->watchdog_timeo = TX_TIMEOUT;
+
+	err = register_netdev(dev);
+	if (err)
+		goto err_out_free_tx;
+
+	printk(KERN_INFO "%s: %s at %p, %pM, IRQ %d.\n",
+	       dev->name, skel_netdrv_tbl[chip_id].chip_name, ioaddr,
+	       dev->dev_addr, irq);
+
+	return 0;
+
+err_out_free_tx:
+	pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
+err_out_free_rx:
+	pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
+err_out_free_dev:
+	free_netdev(dev);
+err_out_unmap:
+	pci_iounmap(pdev, ioaddr);
+err_out_res:
+	pci_release_regions(pdev);
+	return err;
+}
+
+
+static void __devexit fealnx_remove_one(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+
+	if (dev) {
+		struct netdev_private *np = netdev_priv(dev);
+
+		pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring,
+			np->tx_ring_dma);
+		pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring,
+			np->rx_ring_dma);
+		unregister_netdev(dev);
+		pci_iounmap(pdev, np->mem);
+		free_netdev(dev);
+		pci_release_regions(pdev);
+		pci_set_drvdata(pdev, NULL);
+	} else
+		printk(KERN_ERR "fealnx: remove for unknown device\n");
+}
+
+
+static ulong m80x_send_cmd_to_phy(void __iomem *miiport, int opcode, int phyad, int regad)
+{
+	ulong miir;
+	int i;
+	unsigned int mask, data;
+
+	/* enable MII output */
+	miir = (ulong) ioread32(miiport);
+	miir &= 0xfffffff0;
+
+	miir |= MASK_MIIR_MII_WRITE + MASK_MIIR_MII_MDO;
+
+	/* send 32 1's preamble */
+	for (i = 0; i < 32; i++) {
+		/* low MDC; MDO is already high (miir) */
+		miir &= ~MASK_MIIR_MII_MDC;
+		iowrite32(miir, miiport);
+
+		/* high MDC */
+		miir |= MASK_MIIR_MII_MDC;
+		iowrite32(miir, miiport);
+	}
+
+	/* calculate ST+OP+PHYAD+REGAD+TA */
+	data = opcode | (phyad << 7) | (regad << 2);
+
+	/* sent out */
+	mask = 0x8000;
+	while (mask) {
+		/* low MDC, prepare MDO */
+		miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO);
+		if (mask & data)
+			miir |= MASK_MIIR_MII_MDO;
+
+		iowrite32(miir, miiport);
+		/* high MDC */
+		miir |= MASK_MIIR_MII_MDC;
+		iowrite32(miir, miiport);
+		udelay(30);
+
+		/* next */
+		mask >>= 1;
+		if (mask == 0x2 && opcode == OP_READ)
+			miir &= ~MASK_MIIR_MII_WRITE;
+	}
+	return miir;
+}
+
+
+static int mdio_read(struct net_device *dev, int phyad, int regad)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *miiport = np->mem + MANAGEMENT;
+	ulong miir;
+	unsigned int mask, data;
+
+	miir = m80x_send_cmd_to_phy(miiport, OP_READ, phyad, regad);
+
+	/* read data */
+	mask = 0x8000;
+	data = 0;
+	while (mask) {
+		/* low MDC */
+		miir &= ~MASK_MIIR_MII_MDC;
+		iowrite32(miir, miiport);
+
+		/* read MDI */
+		miir = ioread32(miiport);
+		if (miir & MASK_MIIR_MII_MDI)
+			data |= mask;
+
+		/* high MDC, and wait */
+		miir |= MASK_MIIR_MII_MDC;
+		iowrite32(miir, miiport);
+		udelay(30);
+
+		/* next */
+		mask >>= 1;
+	}
+
+	/* low MDC */
+	miir &= ~MASK_MIIR_MII_MDC;
+	iowrite32(miir, miiport);
+
+	return data & 0xffff;
+}
+
+
+static void mdio_write(struct net_device *dev, int phyad, int regad, int data)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *miiport = np->mem + MANAGEMENT;
+	ulong miir;
+	unsigned int mask;
+
+	miir = m80x_send_cmd_to_phy(miiport, OP_WRITE, phyad, regad);
+
+	/* write data */
+	mask = 0x8000;
+	while (mask) {
+		/* low MDC, prepare MDO */
+		miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO);
+		if (mask & data)
+			miir |= MASK_MIIR_MII_MDO;
+		iowrite32(miir, miiport);
+
+		/* high MDC */
+		miir |= MASK_MIIR_MII_MDC;
+		iowrite32(miir, miiport);
+
+		/* next */
+		mask >>= 1;
+	}
+
+	/* low MDC */
+	miir &= ~MASK_MIIR_MII_MDC;
+	iowrite32(miir, miiport);
+}
+
+
+static int netdev_open(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->mem;
+	int i;
+
+	iowrite32(0x00000001, ioaddr + BCR);	/* Reset */
+
+	if (request_irq(dev->irq, intr_handler, IRQF_SHARED, dev->name, dev))
+		return -EAGAIN;
+
+	for (i = 0; i < 3; i++)
+		iowrite16(((unsigned short*)dev->dev_addr)[i],
+				ioaddr + PAR0 + i*2);
+
+	init_ring(dev);
+
+	iowrite32(np->rx_ring_dma, ioaddr + RXLBA);
+	iowrite32(np->tx_ring_dma, ioaddr + TXLBA);
+
+	/* Initialize other registers. */
+	/* Configure the PCI bus bursts and FIFO thresholds.
+	   486: Set 8 longword burst.
+	   586: no burst limit.
+	   Burst length 5:3
+	   0 0 0   1
+	   0 0 1   4
+	   0 1 0   8
+	   0 1 1   16
+	   1 0 0   32
+	   1 0 1   64
+	   1 1 0   128
+	   1 1 1   256
+	   Wait the specified 50 PCI cycles after a reset by initializing
+	   Tx and Rx queues and the address filter list.
+	   FIXME (Ueimor): optimistic for alpha + posted writes ? */
+
+	np->bcrvalue = 0x10;	/* little-endian, 8 burst length */
+#ifdef __BIG_ENDIAN
+	np->bcrvalue |= 0x04;	/* big-endian */
+#endif
+
+#if defined(__i386__) && !defined(MODULE)
+	if (boot_cpu_data.x86 <= 4)
+		np->crvalue = 0xa00;
+	else
+#endif
+		np->crvalue = 0xe00;	/* rx 128 burst length */
+
+
+// 89/12/29 add,
+// 90/1/16 modify,
+//   np->imrvalue=FBE|TUNF|CNTOVF|RBU|TI|RI;
+	np->imrvalue = TUNF | CNTOVF | RBU | TI | RI;
+	if (np->pci_dev->device == 0x891) {
+		np->bcrvalue |= 0x200;	/* set PROG bit */
+		np->crvalue |= CR_W_ENH;	/* set enhanced bit */
+		np->imrvalue |= ETI;
+	}
+	iowrite32(np->bcrvalue, ioaddr + BCR);
+
+	if (dev->if_port == 0)
+		dev->if_port = np->default_port;
+
+	iowrite32(0, ioaddr + RXPDR);
+// 89/9/1 modify,
+//   np->crvalue = 0x00e40001;    /* tx store and forward, tx/rx enable */
+	np->crvalue |= 0x00e40001;	/* tx store and forward, tx/rx enable */
+	np->mii.full_duplex = np->mii.force_media;
+	getlinkstatus(dev);
+	if (np->linkok)
+		getlinktype(dev);
+	__set_rx_mode(dev);
+
+	netif_start_queue(dev);
+
+	/* Clear and Enable interrupts by setting the interrupt mask. */
+	iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
+	iowrite32(np->imrvalue, ioaddr + IMR);
+
+	if (debug)
+		printk(KERN_DEBUG "%s: Done netdev_open().\n", dev->name);
+
+	/* Set the timer to check for link beat. */
+	init_timer(&np->timer);
+	np->timer.expires = RUN_AT(3 * HZ);
+	np->timer.data = (unsigned long) dev;
+	np->timer.function = netdev_timer;
+
+	/* timer handler */
+	add_timer(&np->timer);
+
+	init_timer(&np->reset_timer);
+	np->reset_timer.data = (unsigned long) dev;
+	np->reset_timer.function = reset_timer;
+	np->reset_timer_armed = 0;
+
+	return 0;
+}
+
+
+static void getlinkstatus(struct net_device *dev)
+/* function: Routine will read MII Status Register to get link status.       */
+/* input   : dev... pointer to the adapter block.                            */
+/* output  : none.                                                           */
+{
+	struct netdev_private *np = netdev_priv(dev);
+	unsigned int i, DelayTime = 0x1000;
+
+	np->linkok = 0;
+
+	if (np->PHYType == MysonPHY) {
+		for (i = 0; i < DelayTime; ++i) {
+			if (ioread32(np->mem + BMCRSR) & LinkIsUp2) {
+				np->linkok = 1;
+				return;
+			}
+			udelay(100);
+		}
+	} else {
+		for (i = 0; i < DelayTime; ++i) {
+			if (mdio_read(dev, np->phys[0], MII_BMSR) & BMSR_LSTATUS) {
+				np->linkok = 1;
+				return;
+			}
+			udelay(100);
+		}
+	}
+}
+
+
+static void getlinktype(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+
+	if (np->PHYType == MysonPHY) {	/* 3-in-1 case */
+		if (ioread32(np->mem + TCRRCR) & CR_R_FD)
+			np->duplexmode = 2;	/* full duplex */
+		else
+			np->duplexmode = 1;	/* half duplex */
+		if (ioread32(np->mem + TCRRCR) & CR_R_PS10)
+			np->line_speed = 1;	/* 10M */
+		else
+			np->line_speed = 2;	/* 100M */
+	} else {
+		if (np->PHYType == SeeqPHY) {	/* this PHY is SEEQ 80225 */
+			unsigned int data;
+
+			data = mdio_read(dev, np->phys[0], MIIRegister18);
+			if (data & SPD_DET_100)
+				np->line_speed = 2;	/* 100M */
+			else
+				np->line_speed = 1;	/* 10M */
+			if (data & DPLX_DET_FULL)
+				np->duplexmode = 2;	/* full duplex mode */
+			else
+				np->duplexmode = 1;	/* half duplex mode */
+		} else if (np->PHYType == AhdocPHY) {
+			unsigned int data;
+
+			data = mdio_read(dev, np->phys[0], DiagnosticReg);
+			if (data & Speed_100)
+				np->line_speed = 2;	/* 100M */
+			else
+				np->line_speed = 1;	/* 10M */
+			if (data & DPLX_FULL)
+				np->duplexmode = 2;	/* full duplex mode */
+			else
+				np->duplexmode = 1;	/* half duplex mode */
+		}
+/* 89/6/13 add, (begin) */
+		else if (np->PHYType == MarvellPHY) {
+			unsigned int data;
+
+			data = mdio_read(dev, np->phys[0], SpecificReg);
+			if (data & Full_Duplex)
+				np->duplexmode = 2;	/* full duplex mode */
+			else
+				np->duplexmode = 1;	/* half duplex mode */
+			data &= SpeedMask;
+			if (data == Speed_1000M)
+				np->line_speed = 3;	/* 1000M */
+			else if (data == Speed_100M)
+				np->line_speed = 2;	/* 100M */
+			else
+				np->line_speed = 1;	/* 10M */
+		}
+/* 89/6/13 add, (end) */
+/* 89/7/27 add, (begin) */
+		else if (np->PHYType == Myson981) {
+			unsigned int data;
+
+			data = mdio_read(dev, np->phys[0], StatusRegister);
+
+			if (data & SPEED100)
+				np->line_speed = 2;
+			else
+				np->line_speed = 1;
+
+			if (data & FULLMODE)
+				np->duplexmode = 2;
+			else
+				np->duplexmode = 1;
+		}
+/* 89/7/27 add, (end) */
+/* 89/12/29 add */
+		else if (np->PHYType == LevelOnePHY) {
+			unsigned int data;
+
+			data = mdio_read(dev, np->phys[0], SpecificReg);
+			if (data & LXT1000_Full)
+				np->duplexmode = 2;	/* full duplex mode */
+			else
+				np->duplexmode = 1;	/* half duplex mode */
+			data &= SpeedMask;
+			if (data == LXT1000_1000M)
+				np->line_speed = 3;	/* 1000M */
+			else if (data == LXT1000_100M)
+				np->line_speed = 2;	/* 100M */
+			else
+				np->line_speed = 1;	/* 10M */
+		}
+		np->crvalue &= (~CR_W_PS10) & (~CR_W_FD) & (~CR_W_PS1000);
+		if (np->line_speed == 1)
+			np->crvalue |= CR_W_PS10;
+		else if (np->line_speed == 3)
+			np->crvalue |= CR_W_PS1000;
+		if (np->duplexmode == 2)
+			np->crvalue |= CR_W_FD;
+	}
+}
+
+
+/* Take lock before calling this */
+static void allocate_rx_buffers(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+
+	/*  allocate skb for rx buffers */
+	while (np->really_rx_count != RX_RING_SIZE) {
+		struct sk_buff *skb;
+
+		skb = dev_alloc_skb(np->rx_buf_sz);
+		if (skb == NULL)
+			break;	/* Better luck next round. */
+
+		while (np->lack_rxbuf->skbuff)
+			np->lack_rxbuf = np->lack_rxbuf->next_desc_logical;
+
+		skb->dev = dev;	/* Mark as being used by this device. */
+		np->lack_rxbuf->skbuff = skb;
+		np->lack_rxbuf->buffer = pci_map_single(np->pci_dev, skb->data,
+			np->rx_buf_sz, PCI_DMA_FROMDEVICE);
+		np->lack_rxbuf->status = RXOWN;
+		++np->really_rx_count;
+	}
+}
+
+
+static void netdev_timer(unsigned long data)
+{
+	struct net_device *dev = (struct net_device *) data;
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->mem;
+	int old_crvalue = np->crvalue;
+	unsigned int old_linkok = np->linkok;
+	unsigned long flags;
+
+	if (debug)
+		printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x "
+		       "config %8.8x.\n", dev->name, ioread32(ioaddr + ISR),
+		       ioread32(ioaddr + TCRRCR));
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	if (np->flags == HAS_MII_XCVR) {
+		getlinkstatus(dev);
+		if ((old_linkok == 0) && (np->linkok == 1)) {	/* we need to detect the media type again */
+			getlinktype(dev);
+			if (np->crvalue != old_crvalue) {
+				stop_nic_rxtx(ioaddr, np->crvalue);
+				iowrite32(np->crvalue, ioaddr + TCRRCR);
+			}
+		}
+	}
+
+	allocate_rx_buffers(dev);
+
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	np->timer.expires = RUN_AT(10 * HZ);
+	add_timer(&np->timer);
+}
+
+
+/* Take lock before calling */
+/* Reset chip and disable rx, tx and interrupts */
+static void reset_and_disable_rxtx(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->mem;
+	int delay=51;
+
+	/* Reset the chip's Tx and Rx processes. */
+	stop_nic_rxtx(ioaddr, 0);
+
+	/* Disable interrupts by clearing the interrupt mask. */
+	iowrite32(0, ioaddr + IMR);
+
+	/* Reset the chip to erase previous misconfiguration. */
+	iowrite32(0x00000001, ioaddr + BCR);
+
+	/* Ueimor: wait for 50 PCI cycles (and flush posted writes btw).
+	   We surely wait too long (address+data phase). Who cares? */
+	while (--delay) {
+		ioread32(ioaddr + BCR);
+		rmb();
+	}
+}
+
+
+/* Take lock before calling */
+/* Restore chip after reset */
+static void enable_rxtx(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->mem;
+
+	reset_rx_descriptors(dev);
+
+	iowrite32(np->tx_ring_dma + ((char*)np->cur_tx - (char*)np->tx_ring),
+		ioaddr + TXLBA);
+	iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring),
+		ioaddr + RXLBA);
+
+	iowrite32(np->bcrvalue, ioaddr + BCR);
+
+	iowrite32(0, ioaddr + RXPDR);
+	__set_rx_mode(dev); /* changes np->crvalue, writes it into TCRRCR */
+
+	/* Clear and Enable interrupts by setting the interrupt mask. */
+	iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
+	iowrite32(np->imrvalue, ioaddr + IMR);
+
+	iowrite32(0, ioaddr + TXPDR);
+}
+
+
+static void reset_timer(unsigned long data)
+{
+	struct net_device *dev = (struct net_device *) data;
+	struct netdev_private *np = netdev_priv(dev);
+	unsigned long flags;
+
+	printk(KERN_WARNING "%s: resetting tx and rx machinery\n", dev->name);
+
+	spin_lock_irqsave(&np->lock, flags);
+	np->crvalue = np->crvalue_sv;
+	np->imrvalue = np->imrvalue_sv;
+
+	reset_and_disable_rxtx(dev);
+	/* works for me without this:
+	reset_tx_descriptors(dev); */
+	enable_rxtx(dev);
+	netif_start_queue(dev); /* FIXME: or netif_wake_queue(dev); ? */
+
+	np->reset_timer_armed = 0;
+
+	spin_unlock_irqrestore(&np->lock, flags);
+}
+
+
+static void fealnx_tx_timeout(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->mem;
+	unsigned long flags;
+	int i;
+
+	printk(KERN_WARNING
+	       "%s: Transmit timed out, status %8.8x, resetting...\n",
+	       dev->name, ioread32(ioaddr + ISR));
+
+	{
+		printk(KERN_DEBUG "  Rx ring %p: ", np->rx_ring);
+		for (i = 0; i < RX_RING_SIZE; i++)
+			printk(KERN_CONT " %8.8x",
+			       (unsigned int) np->rx_ring[i].status);
+		printk(KERN_CONT "\n");
+		printk(KERN_DEBUG "  Tx ring %p: ", np->tx_ring);
+		for (i = 0; i < TX_RING_SIZE; i++)
+			printk(KERN_CONT " %4.4x", np->tx_ring[i].status);
+		printk(KERN_CONT "\n");
+	}
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	reset_and_disable_rxtx(dev);
+	reset_tx_descriptors(dev);
+	enable_rxtx(dev);
+
+	spin_unlock_irqrestore(&np->lock, flags);
+
+	dev->trans_start = jiffies; /* prevent tx timeout */
+	dev->stats.tx_errors++;
+	netif_wake_queue(dev); /* or .._start_.. ?? */
+}
+
+
+/* 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;
+
+	/* initialize rx variables */
+	np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
+	np->cur_rx = &np->rx_ring[0];
+	np->lack_rxbuf = np->rx_ring;
+	np->really_rx_count = 0;
+
+	/* initial rx descriptors. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		np->rx_ring[i].status = 0;
+		np->rx_ring[i].control = np->rx_buf_sz << RBSShift;
+		np->rx_ring[i].next_desc = np->rx_ring_dma +
+			(i + 1)*sizeof(struct fealnx_desc);
+		np->rx_ring[i].next_desc_logical = &np->rx_ring[i + 1];
+		np->rx_ring[i].skbuff = NULL;
+	}
+
+	/* for the last rx descriptor */
+	np->rx_ring[i - 1].next_desc = np->rx_ring_dma;
+	np->rx_ring[i - 1].next_desc_logical = np->rx_ring;
+
+	/* allocate skb for rx buffers */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz);
+
+		if (skb == NULL) {
+			np->lack_rxbuf = &np->rx_ring[i];
+			break;
+		}
+
+		++np->really_rx_count;
+		np->rx_ring[i].skbuff = skb;
+		skb->dev = dev;	/* Mark as being used by this device. */
+		np->rx_ring[i].buffer = pci_map_single(np->pci_dev, skb->data,
+			np->rx_buf_sz, PCI_DMA_FROMDEVICE);
+		np->rx_ring[i].status = RXOWN;
+		np->rx_ring[i].control |= RXIC;
+	}
+
+	/* initialize tx variables */
+	np->cur_tx = &np->tx_ring[0];
+	np->cur_tx_copy = &np->tx_ring[0];
+	np->really_tx_count = 0;
+	np->free_tx_count = TX_RING_SIZE;
+
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		np->tx_ring[i].status = 0;
+		/* do we need np->tx_ring[i].control = XXX; ?? */
+		np->tx_ring[i].next_desc = np->tx_ring_dma +
+			(i + 1)*sizeof(struct fealnx_desc);
+		np->tx_ring[i].next_desc_logical = &np->tx_ring[i + 1];
+		np->tx_ring[i].skbuff = NULL;
+	}
+
+	/* for the last tx descriptor */
+	np->tx_ring[i - 1].next_desc = np->tx_ring_dma;
+	np->tx_ring[i - 1].next_desc_logical = &np->tx_ring[0];
+}
+
+
+static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	unsigned long flags;
+
+	spin_lock_irqsave(&np->lock, flags);
+
+	np->cur_tx_copy->skbuff = skb;
+
+#define one_buffer
+#define BPT 1022
+#if defined(one_buffer)
+	np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
+		skb->len, PCI_DMA_TODEVICE);
+	np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable;
+	np->cur_tx_copy->control |= (skb->len << PKTSShift);	/* pkt size */
+	np->cur_tx_copy->control |= (skb->len << TBSShift);	/* buffer size */
+// 89/12/29 add,
+	if (np->pci_dev->device == 0x891)
+		np->cur_tx_copy->control |= ETIControl | RetryTxLC;
+	np->cur_tx_copy->status = TXOWN;
+	np->cur_tx_copy = np->cur_tx_copy->next_desc_logical;
+	--np->free_tx_count;
+#elif defined(two_buffer)
+	if (skb->len > BPT) {
+		struct fealnx_desc *next;
+
+		/* for the first descriptor */
+		np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
+			BPT, PCI_DMA_TODEVICE);
+		np->cur_tx_copy->control = TXIC | TXFD | CRCEnable | PADEnable;
+		np->cur_tx_copy->control |= (skb->len << PKTSShift);	/* pkt size */
+		np->cur_tx_copy->control |= (BPT << TBSShift);	/* buffer size */
+
+		/* for the last descriptor */
+		next = np->cur_tx_copy->next_desc_logical;
+		next->skbuff = skb;
+		next->control = TXIC | TXLD | CRCEnable | PADEnable;
+		next->control |= (skb->len << PKTSShift);	/* pkt size */
+		next->control |= ((skb->len - BPT) << TBSShift);	/* buf size */
+// 89/12/29 add,
+		if (np->pci_dev->device == 0x891)
+			np->cur_tx_copy->control |= ETIControl | RetryTxLC;
+		next->buffer = pci_map_single(ep->pci_dev, skb->data + BPT,
+                                skb->len - BPT, PCI_DMA_TODEVICE);
+
+		next->status = TXOWN;
+		np->cur_tx_copy->status = TXOWN;
+
+		np->cur_tx_copy = next->next_desc_logical;
+		np->free_tx_count -= 2;
+	} else {
+		np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
+			skb->len, PCI_DMA_TODEVICE);
+		np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable;
+		np->cur_tx_copy->control |= (skb->len << PKTSShift);	/* pkt size */
+		np->cur_tx_copy->control |= (skb->len << TBSShift);	/* buffer size */
+// 89/12/29 add,
+		if (np->pci_dev->device == 0x891)
+			np->cur_tx_copy->control |= ETIControl | RetryTxLC;
+		np->cur_tx_copy->status = TXOWN;
+		np->cur_tx_copy = np->cur_tx_copy->next_desc_logical;
+		--np->free_tx_count;
+	}
+#endif
+
+	if (np->free_tx_count < 2)
+		netif_stop_queue(dev);
+	++np->really_tx_count;
+	iowrite32(0, np->mem + TXPDR);
+
+	spin_unlock_irqrestore(&np->lock, flags);
+	return NETDEV_TX_OK;
+}
+
+
+/* Take lock before calling */
+/* Chip probably hosed tx ring. Clean up. */
+static void reset_tx_descriptors(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	struct fealnx_desc *cur;
+	int i;
+
+	/* initialize tx variables */
+	np->cur_tx = &np->tx_ring[0];
+	np->cur_tx_copy = &np->tx_ring[0];
+	np->really_tx_count = 0;
+	np->free_tx_count = TX_RING_SIZE;
+
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		cur = &np->tx_ring[i];
+		if (cur->skbuff) {
+			pci_unmap_single(np->pci_dev, cur->buffer,
+				cur->skbuff->len, PCI_DMA_TODEVICE);
+			dev_kfree_skb_any(cur->skbuff);
+			cur->skbuff = NULL;
+		}
+		cur->status = 0;
+		cur->control = 0;	/* needed? */
+		/* probably not needed. We do it for purely paranoid reasons */
+		cur->next_desc = np->tx_ring_dma +
+			(i + 1)*sizeof(struct fealnx_desc);
+		cur->next_desc_logical = &np->tx_ring[i + 1];
+	}
+	/* for the last tx descriptor */
+	np->tx_ring[TX_RING_SIZE - 1].next_desc = np->tx_ring_dma;
+	np->tx_ring[TX_RING_SIZE - 1].next_desc_logical = &np->tx_ring[0];
+}
+
+
+/* Take lock and stop rx before calling this */
+static void reset_rx_descriptors(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	struct fealnx_desc *cur = np->cur_rx;
+	int i;
+
+	allocate_rx_buffers(dev);
+
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		if (cur->skbuff)
+			cur->status = RXOWN;
+		cur = cur->next_desc_logical;
+	}
+
+	iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring),
+		np->mem + RXLBA);
+}
+
+
+/* The interrupt handler does all of the Rx thread work and cleans up
+   after the Tx thread. */
+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->mem;
+	long boguscnt = max_interrupt_work;
+	unsigned int num_tx = 0;
+	int handled = 0;
+
+	spin_lock(&np->lock);
+
+	iowrite32(0, ioaddr + IMR);
+
+	do {
+		u32 intr_status = ioread32(ioaddr + ISR);
+
+		/* Acknowledge all of the current interrupt sources ASAP. */
+		iowrite32(intr_status, ioaddr + ISR);
+
+		if (debug)
+			printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", dev->name,
+			       intr_status);
+
+		if (!(intr_status & np->imrvalue))
+			break;
+
+		handled = 1;
+
+// 90/1/16 delete,
+//
+//      if (intr_status & FBE)
+//      {   /* fatal error */
+//          stop_nic_tx(ioaddr, 0);
+//          stop_nic_rx(ioaddr, 0);
+//          break;
+//      };
+
+		if (intr_status & TUNF)
+			iowrite32(0, ioaddr + TXPDR);
+
+		if (intr_status & CNTOVF) {
+			/* missed pkts */
+			dev->stats.rx_missed_errors +=
+				ioread32(ioaddr + TALLY) & 0x7fff;
+
+			/* crc error */
+			dev->stats.rx_crc_errors +=
+			    (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
+		}
+
+		if (intr_status & (RI | RBU)) {
+			if (intr_status & RI)
+				netdev_rx(dev);
+			else {
+				stop_nic_rx(ioaddr, np->crvalue);
+				reset_rx_descriptors(dev);
+				iowrite32(np->crvalue, ioaddr + TCRRCR);
+			}
+		}
+
+		while (np->really_tx_count) {
+			long tx_status = np->cur_tx->status;
+			long tx_control = np->cur_tx->control;
+
+			if (!(tx_control & TXLD)) {	/* this pkt is combined by two tx descriptors */
+				struct fealnx_desc *next;
+
+				next = np->cur_tx->next_desc_logical;
+				tx_status = next->status;
+				tx_control = next->control;
+			}
+
+			if (tx_status & TXOWN)
+				break;
+
+			if (!(np->crvalue & CR_W_ENH)) {
+				if (tx_status & (CSL | LC | EC | UDF | HF)) {
+					dev->stats.tx_errors++;
+					if (tx_status & EC)
+						dev->stats.tx_aborted_errors++;
+					if (tx_status & CSL)
+						dev->stats.tx_carrier_errors++;
+					if (tx_status & LC)
+						dev->stats.tx_window_errors++;
+					if (tx_status & UDF)
+						dev->stats.tx_fifo_errors++;
+					if ((tx_status & HF) && np->mii.full_duplex == 0)
+						dev->stats.tx_heartbeat_errors++;
+
+				} else {
+					dev->stats.tx_bytes +=
+					    ((tx_control & PKTSMask) >> PKTSShift);
+
+					dev->stats.collisions +=
+					    ((tx_status & NCRMask) >> NCRShift);
+					dev->stats.tx_packets++;
+				}
+			} else {
+				dev->stats.tx_bytes +=
+				    ((tx_control & PKTSMask) >> PKTSShift);
+				dev->stats.tx_packets++;
+			}
+
+			/* Free the original skb. */
+			pci_unmap_single(np->pci_dev, np->cur_tx->buffer,
+				np->cur_tx->skbuff->len, PCI_DMA_TODEVICE);
+			dev_kfree_skb_irq(np->cur_tx->skbuff);
+			np->cur_tx->skbuff = NULL;
+			--np->really_tx_count;
+			if (np->cur_tx->control & TXLD) {
+				np->cur_tx = np->cur_tx->next_desc_logical;
+				++np->free_tx_count;
+			} else {
+				np->cur_tx = np->cur_tx->next_desc_logical;
+				np->cur_tx = np->cur_tx->next_desc_logical;
+				np->free_tx_count += 2;
+			}
+			num_tx++;
+		}		/* end of for loop */
+
+		if (num_tx && np->free_tx_count >= 2)
+			netif_wake_queue(dev);
+
+		/* read transmit status for enhanced mode only */
+		if (np->crvalue & CR_W_ENH) {
+			long data;
+
+			data = ioread32(ioaddr + TSR);
+			dev->stats.tx_errors += (data & 0xff000000) >> 24;
+			dev->stats.tx_aborted_errors +=
+				(data & 0xff000000) >> 24;
+			dev->stats.tx_window_errors +=
+				(data & 0x00ff0000) >> 16;
+			dev->stats.collisions += (data & 0x0000ffff);
+		}
+
+		if (--boguscnt < 0) {
+			printk(KERN_WARNING "%s: Too much work at interrupt, "
+			       "status=0x%4.4x.\n", dev->name, intr_status);
+			if (!np->reset_timer_armed) {
+				np->reset_timer_armed = 1;
+				np->reset_timer.expires = RUN_AT(HZ/2);
+				add_timer(&np->reset_timer);
+				stop_nic_rxtx(ioaddr, 0);
+				netif_stop_queue(dev);
+				/* or netif_tx_disable(dev); ?? */
+				/* Prevent other paths from enabling tx,rx,intrs */
+				np->crvalue_sv = np->crvalue;
+				np->imrvalue_sv = np->imrvalue;
+				np->crvalue &= ~(CR_W_TXEN | CR_W_RXEN); /* or simply = 0? */
+				np->imrvalue = 0;
+			}
+
+			break;
+		}
+	} while (1);
+
+	/* read the tally counters */
+	/* missed pkts */
+	dev->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff;
+
+	/* crc error */
+	dev->stats.rx_crc_errors +=
+		(ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
+
+	if (debug)
+		printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
+		       dev->name, ioread32(ioaddr + ISR));
+
+	iowrite32(np->imrvalue, ioaddr + IMR);
+
+	spin_unlock(&np->lock);
+
+	return IRQ_RETVAL(handled);
+}
+
+
+/* This routine is logically part of the interrupt handler, but separated
+   for clarity and better register allocation. */
+static int netdev_rx(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->mem;
+
+	/* If EOP is set on the next entry, it's a new packet. Send it up. */
+	while (!(np->cur_rx->status & RXOWN) && np->cur_rx->skbuff) {
+		s32 rx_status = np->cur_rx->status;
+
+		if (np->really_rx_count == 0)
+			break;
+
+		if (debug)
+			printk(KERN_DEBUG "  netdev_rx() status was %8.8x.\n", rx_status);
+
+		if ((!((rx_status & RXFSD) && (rx_status & RXLSD))) ||
+		    (rx_status & ErrorSummary)) {
+			if (rx_status & ErrorSummary) {	/* there was a fatal error */
+				if (debug)
+					printk(KERN_DEBUG
+					       "%s: Receive error, Rx status %8.8x.\n",
+					       dev->name, rx_status);
+
+				dev->stats.rx_errors++;	/* end of a packet. */
+				if (rx_status & (LONG | RUNT))
+					dev->stats.rx_length_errors++;
+				if (rx_status & RXER)
+					dev->stats.rx_frame_errors++;
+				if (rx_status & CRC)
+					dev->stats.rx_crc_errors++;
+			} else {
+				int need_to_reset = 0;
+				int desno = 0;
+
+				if (rx_status & RXFSD) {	/* this pkt is too long, over one rx buffer */
+					struct fealnx_desc *cur;
+
+					/* check this packet is received completely? */
+					cur = np->cur_rx;
+					while (desno <= np->really_rx_count) {
+						++desno;
+						if ((!(cur->status & RXOWN)) &&
+						    (cur->status & RXLSD))
+							break;
+						/* goto next rx descriptor */
+						cur = cur->next_desc_logical;
+					}
+					if (desno > np->really_rx_count)
+						need_to_reset = 1;
+				} else	/* RXLSD did not find, something error */
+					need_to_reset = 1;
+
+				if (need_to_reset == 0) {
+					int i;
+
+					dev->stats.rx_length_errors++;
+
+					/* free all rx descriptors related this long pkt */
+					for (i = 0; i < desno; ++i) {
+						if (!np->cur_rx->skbuff) {
+							printk(KERN_DEBUG
+								"%s: I'm scared\n", dev->name);
+							break;
+						}
+						np->cur_rx->status = RXOWN;
+						np->cur_rx = np->cur_rx->next_desc_logical;
+					}
+					continue;
+				} else {        /* rx error, need to reset this chip */
+					stop_nic_rx(ioaddr, np->crvalue);
+					reset_rx_descriptors(dev);
+					iowrite32(np->crvalue, ioaddr + TCRRCR);
+				}
+				break;	/* exit the while loop */
+			}
+		} else {	/* this received pkt is ok */
+
+			struct sk_buff *skb;
+			/* Omit the four octet CRC from the length. */
+			short pkt_len = ((rx_status & FLNGMASK) >> FLNGShift) - 4;
+
+#ifndef final_version
+			if (debug)
+				printk(KERN_DEBUG "  netdev_rx() normal Rx pkt length %d"
+				       " status %x.\n", pkt_len, rx_status);
+#endif
+
+			/* Check if the packet is long enough to accept without copying
+			   to a minimally-sized skbuff. */
+			if (pkt_len < rx_copybreak &&
+			    (skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
+				skb_reserve(skb, 2);	/* 16 byte align the IP header */
+				pci_dma_sync_single_for_cpu(np->pci_dev,
+							    np->cur_rx->buffer,
+							    np->rx_buf_sz,
+							    PCI_DMA_FROMDEVICE);
+				/* Call copy + cksum if available. */
+
+#if ! defined(__alpha__)
+				skb_copy_to_linear_data(skb,
+					np->cur_rx->skbuff->data, pkt_len);
+				skb_put(skb, pkt_len);
+#else
+				memcpy(skb_put(skb, pkt_len),
+					np->cur_rx->skbuff->data, pkt_len);
+#endif
+				pci_dma_sync_single_for_device(np->pci_dev,
+							       np->cur_rx->buffer,
+							       np->rx_buf_sz,
+							       PCI_DMA_FROMDEVICE);
+			} else {
+				pci_unmap_single(np->pci_dev,
+						 np->cur_rx->buffer,
+						 np->rx_buf_sz,
+						 PCI_DMA_FROMDEVICE);
+				skb_put(skb = np->cur_rx->skbuff, pkt_len);
+				np->cur_rx->skbuff = NULL;
+				--np->really_rx_count;
+			}
+			skb->protocol = eth_type_trans(skb, dev);
+			netif_rx(skb);
+			dev->stats.rx_packets++;
+			dev->stats.rx_bytes += pkt_len;
+		}
+
+		np->cur_rx = np->cur_rx->next_desc_logical;
+	}			/* end of while loop */
+
+	/*  allocate skb for rx buffers */
+	allocate_rx_buffers(dev);
+
+	return 0;
+}
+
+
+static struct net_device_stats *get_stats(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->mem;
+
+	/* The chip only need report frame silently dropped. */
+	if (netif_running(dev)) {
+		dev->stats.rx_missed_errors +=
+			ioread32(ioaddr + TALLY) & 0x7fff;
+		dev->stats.rx_crc_errors +=
+			(ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16;
+	}
+
+	return &dev->stats;
+}
+
+
+/* for dev->set_multicast_list */
+static void set_rx_mode(struct net_device *dev)
+{
+	spinlock_t *lp = &((struct netdev_private *)netdev_priv(dev))->lock;
+	unsigned long flags;
+	spin_lock_irqsave(lp, flags);
+	__set_rx_mode(dev);
+	spin_unlock_irqrestore(lp, flags);
+}
+
+
+/* Take lock before calling */
+static void __set_rx_mode(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	void __iomem *ioaddr = np->mem;
+	u32 mc_filter[2];	/* Multicast hash filter */
+	u32 rx_mode;
+
+	if (dev->flags & IFF_PROMISC) {	/* Set promiscuous. */
+		memset(mc_filter, 0xff, sizeof(mc_filter));
+		rx_mode = CR_W_PROM | CR_W_AB | CR_W_AM;
+	} 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 = CR_W_AB | CR_W_AM;
+	} else {
+		struct netdev_hw_addr *ha;
+
+		memset(mc_filter, 0, sizeof(mc_filter));
+		netdev_for_each_mc_addr(ha, dev) {
+			unsigned int bit;
+			bit = (ether_crc(ETH_ALEN, ha->addr) >> 26) ^ 0x3F;
+			mc_filter[bit >> 5] |= (1 << bit);
+		}
+		rx_mode = CR_W_AB | CR_W_AM;
+	}
+
+	stop_nic_rxtx(ioaddr, np->crvalue);
+
+	iowrite32(mc_filter[0], ioaddr + MAR0);
+	iowrite32(mc_filter[1], ioaddr + MAR1);
+	np->crvalue &= ~CR_W_RXMODEMASK;
+	np->crvalue |= rx_mode;
+	iowrite32(np->crvalue, ioaddr + TCRRCR);
+}
+
+static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	struct netdev_private *np = netdev_priv(dev);
+
+	strcpy(info->driver, DRV_NAME);
+	strcpy(info->version, DRV_VERSION);
+	strcpy(info->bus_info, pci_name(np->pci_dev));
+}
+
+static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int rc;
+
+	spin_lock_irq(&np->lock);
+	rc = mii_ethtool_gset(&np->mii, cmd);
+	spin_unlock_irq(&np->lock);
+
+	return rc;
+}
+
+static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	int rc;
+
+	spin_lock_irq(&np->lock);
+	rc = mii_ethtool_sset(&np->mii, cmd);
+	spin_unlock_irq(&np->lock);
+
+	return rc;
+}
+
+static int netdev_nway_reset(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	return mii_nway_restart(&np->mii);
+}
+
+static u32 netdev_get_link(struct net_device *dev)
+{
+	struct netdev_private *np = netdev_priv(dev);
+	return mii_link_ok(&np->mii);
+}
+
+static u32 netdev_get_msglevel(struct net_device *dev)
+{
+	return debug;
+}
+
+static void netdev_set_msglevel(struct net_device *dev, u32 value)
+{
+	debug = value;
+}
+
+static const struct ethtool_ops netdev_ethtool_ops = {
+	.get_drvinfo		= netdev_get_drvinfo,
+	.get_settings		= netdev_get_settings,
+	.set_settings		= netdev_set_settings,
+	.nway_reset		= netdev_nway_reset,
+	.get_link		= netdev_get_link,
+	.get_msglevel		= netdev_get_msglevel,
+	.set_msglevel		= netdev_set_msglevel,
+};
+
+static int mii_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_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->mem;
+	int i;
+
+	netif_stop_queue(dev);
+
+	/* Disable interrupts by clearing the interrupt mask. */
+	iowrite32(0x0000, ioaddr + IMR);
+
+	/* Stop the chip's Tx and Rx processes. */
+	stop_nic_rxtx(ioaddr, 0);
+
+	del_timer_sync(&np->timer);
+	del_timer_sync(&np->reset_timer);
+
+	free_irq(dev->irq, dev);
+
+	/* Free all the skbuffs in the Rx queue. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		struct sk_buff *skb = np->rx_ring[i].skbuff;
+
+		np->rx_ring[i].status = 0;
+		if (skb) {
+			pci_unmap_single(np->pci_dev, np->rx_ring[i].buffer,
+				np->rx_buf_sz, PCI_DMA_FROMDEVICE);
+			dev_kfree_skb(skb);
+			np->rx_ring[i].skbuff = NULL;
+		}
+	}
+
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		struct sk_buff *skb = np->tx_ring[i].skbuff;
+
+		if (skb) {
+			pci_unmap_single(np->pci_dev, np->tx_ring[i].buffer,
+				skb->len, PCI_DMA_TODEVICE);
+			dev_kfree_skb(skb);
+			np->tx_ring[i].skbuff = NULL;
+		}
+	}
+
+	return 0;
+}
+
+static DEFINE_PCI_DEVICE_TABLE(fealnx_pci_tbl) = {
+	{0x1516, 0x0800, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{0x1516, 0x0803, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
+	{0x1516, 0x0891, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
+	{} /* terminate list */
+};
+MODULE_DEVICE_TABLE(pci, fealnx_pci_tbl);
+
+
+static struct pci_driver fealnx_driver = {
+	.name		= "fealnx",
+	.id_table	= fealnx_pci_tbl,
+	.probe		= fealnx_init_one,
+	.remove		= __devexit_p(fealnx_remove_one),
+};
+
+static int __init fealnx_init(void)
+{
+/* when a module, this is printed whether or not devices are found in probe */
+#ifdef MODULE
+	printk(version);
+#endif
+
+	return pci_register_driver(&fealnx_driver);
+}
+
+static void __exit fealnx_exit(void)
+{
+	pci_unregister_driver(&fealnx_driver);
+}
+
+module_init(fealnx_init);
+module_exit(fealnx_exit);