/* tulip_core.c: A DEC 21x4x-family ethernet driver for Linux. */

/*
        Maintained by Jeff Garzik <jgarzik@pobox.com>
        Copyright 2000,2001  The Linux Kernel Team
        Written/copyright 1994-2001 by Donald Becker.

        This software may be used and distributed according to the terms
        of the GNU General Public License, incorporated herein by reference.

        Please refer to Documentation/DocBook/tulip.{pdf,ps,html}
        for more information on this driver, or visit the project
        Web page at http://sourceforge.net/projects/tulip/

*/

#define DRV_NAME        "tulip"
#define DRV_VERSION     "1.1.13"
#define DRV_RELDATE     "May 11, 2002"

#include <linux/config.h>
#include <linux/module.h>
#include "tulip.h"
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/crc32.h>
#include <asm/unaligned.h>
#include <asm/uaccess.h>

#ifdef __sparc__
#include <asm/pbm.h>
#endif

static char version[] __devinitdata =
        "Linux Tulip driver version " DRV_VERSION " (" DRV_RELDATE ")\n";


/* A few user-configurable values. */

/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
static unsigned int max_interrupt_work = 25;

#define MAX_UNITS 8
/* Used to pass the full-duplex flag, etc. */
static int full_duplex[MAX_UNITS];
static int options[MAX_UNITS];
static int mtu[MAX_UNITS];                      /* Jumbo MTU for interfaces. */

/*  The possible media types that can be set in options[] are: */
const char * const medianame[32] = {
        "10baseT", "10base2", "AUI", "100baseTx",
        "10baseT-FDX", "100baseTx-FDX", "100baseT4", "100baseFx",
        "100baseFx-FDX", "MII 10baseT", "MII 10baseT-FDX", "MII",
        "10baseT(forced)", "MII 100baseTx", "MII 100baseTx-FDX", "MII 100baseT4",
        "MII 100baseFx-HDX", "MII 100baseFx-FDX", "Home-PNA 1Mbps", "Invalid-19",
        "","","","", "","","","",  "","","","Transceiver reset",
};

/* Set the copy breakpoint for the copy-only-tiny-buffer Rx structure. */
#if defined(__alpha__) || defined(__arm__) || defined(__hppa__) \
        || defined(__sparc_) || defined(__ia64__) \
        || defined(__sh__) || defined(__mips__)
static int rx_copybreak = 1518;
#else
static int rx_copybreak = 100;
#endif

/*
  Set the bus performance register.
        Typical: Set 16 longword cache alignment, no burst limit.
        Cache alignment bits 15:14           Burst length 13:8
                0000    No alignment  0x00000000 unlimited              0800 8 longwords
                4000    8  longwords            0100 1 longword         1000 16 longwords
                8000    16 longwords            0200 2 longwords        2000 32 longwords
                C000    32  longwords           0400 4 longwords
        Warning: many older 486 systems are broken and require setting 0x00A04800
           8 longword cache alignment, 8 longword burst.
        ToDo: Non-Intel setting could be better.
*/

#if defined(__alpha__) || defined(__ia64__) || defined(__x86_64__)
static int csr0 = 0x01A00000 | 0xE000;
#elif defined(__i386__) || defined(__powerpc__)
static int csr0 = 0x01A00000 | 0x8000;
#elif defined(__sparc__) || defined(__hppa__)
/* The UltraSparc PCI controllers will disconnect at every 64-byte
 * crossing anyways so it makes no sense to tell Tulip to burst
 * any more than that.
 */
static int csr0 = 0x01A00000 | 0x9000;
#elif defined(__arm__) || defined(__sh__)
static int csr0 = 0x01A00000 | 0x4800;
#elif defined(__mips__)
static int csr0 = 0x00200000 | 0x4000;
#else
#warning Processor architecture undefined!
static int csr0 = 0x00A00000 | 0x4800;
#endif

/* Operational parameters that usually are not changed. */
/* Time in jiffies before concluding the transmitter is hung. */
#define TX_TIMEOUT  (4*HZ)


MODULE_AUTHOR("The Linux Kernel Team");
MODULE_DESCRIPTION("Digital 21*4* Tulip ethernet driver");
MODULE_LICENSE("GPL");
MODULE_PARM(tulip_debug, "i");
MODULE_PARM(max_interrupt_work, "i");
MODULE_PARM(rx_copybreak, "i");
MODULE_PARM(csr0, "i");
MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i");
MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i");

#define PFX DRV_NAME ": "

#ifdef TULIP_DEBUG
int tulip_debug = TULIP_DEBUG;
#else
int tulip_debug = 1;
#endif



/*
 * This table use during operation for capabilities and media timer.
 *
 * It is indexed via the values in 'enum chips'
 */

struct tulip_chip_table tulip_tbl[] = {
  { }, /* placeholder for array, slot unused currently */
  { }, /* placeholder for array, slot unused currently */

  /* DC21140 */
  { "Digital DS21140 Tulip", 128, 0x0001ebef,
        HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM | HAS_PCI_MWI, tulip_timer },

  /* DC21142, DC21143 */
  { "Digital DS21143 Tulip", 128, 0x0801fbff,
        HAS_MII | HAS_MEDIA_TABLE | ALWAYS_CHECK_MII | HAS_ACPI | HAS_NWAY
        | HAS_INTR_MITIGATION | HAS_PCI_MWI, t21142_timer },

  /* LC82C168 */
  { "Lite-On 82c168 PNIC", 256, 0x0001fbef,
        HAS_MII | HAS_PNICNWAY, pnic_timer },

  /* MX98713 */
  { "Macronix 98713 PMAC", 128, 0x0001ebef,
        HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM, mxic_timer },

  /* MX98715 */
  { "Macronix 98715 PMAC", 256, 0x0001ebef,
        HAS_MEDIA_TABLE, mxic_timer },

  /* MX98725 */
  { "Macronix 98725 PMAC", 256, 0x0001ebef,
        HAS_MEDIA_TABLE, mxic_timer },

  /* AX88140 */
  { "ASIX AX88140", 128, 0x0001fbff,
        HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM | MC_HASH_ONLY
        | IS_ASIX, tulip_timer },

  /* PNIC2 */
  { "Lite-On PNIC-II", 256, 0x0801fbff,
        HAS_MII | HAS_NWAY | HAS_8023X | HAS_PCI_MWI, pnic2_timer },

  /* COMET */
  { "ADMtek Comet", 256, 0x0001abef,
        MC_HASH_ONLY | COMET_MAC_ADDR, comet_timer },

  /* COMPEX9881 */
  { "Compex 9881 PMAC", 128, 0x0001ebef,
        HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM, mxic_timer },

  /* I21145 */
  { "Intel DS21145 Tulip", 128, 0x0801fbff,
        HAS_MII | HAS_MEDIA_TABLE | ALWAYS_CHECK_MII | HAS_ACPI
        | HAS_NWAY | HAS_PCI_MWI, t21142_timer },

  /* DM910X */
  { "Davicom DM9102/DM9102A", 128, 0x0001ebef,
        HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM | HAS_ACPI,
        tulip_timer },

  /* RS7112 */
  { "Conexant LANfinity", 256, 0x0001ebef,
        HAS_MII | HAS_ACPI, tulip_timer },
};


static struct pci_device_id tulip_pci_tbl[] = {
        { 0x1011, 0x0009, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DC21140 },
        { 0x1011, 0x0019, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DC21143 },
        { 0x11AD, 0x0002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, LC82C168 },
        { 0x10d9, 0x0512, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MX98713 },
        { 0x10d9, 0x0531, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MX98715 },
/*      { 0x10d9, 0x0531, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MX98725 },*/
        { 0x125B, 0x1400, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AX88140 },
        { 0x11AD, 0xc115, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PNIC2 },
        { 0x1317, 0x0981, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x1317, 0x0985, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x1317, 0x1985, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x1317, 0x9511, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x13D1, 0xAB02, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x13D1, 0xAB03, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x13D1, 0xAB08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x104A, 0x0981, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x104A, 0x2774, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x1259, 0xa120, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x11F6, 0x9881, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMPEX9881 },
        { 0x8086, 0x0039, PCI_ANY_ID, PCI_ANY_ID, 0, 0, I21145 },
        { 0x1282, 0x9100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DM910X },
        { 0x1282, 0x9102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DM910X },
        { 0x1113, 0x1216, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x1113, 0x1217, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MX98715 },
        { 0x1113, 0x9511, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x14f1, 0x1803, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CONEXANT },
        { 0x1186, 0x1561, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x1626, 0x8410, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x1737, 0xAB09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x1737, 0xAB08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x17B3, 0xAB08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
        { 0x10b9, 0x5261, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DM910X },       /* ALi 1563 integrated ethernet */
        { 0x10b7, 0x9300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET }, /* 3Com 3CSOHO100B-TX */
        { } /* terminate list */
};
MODULE_DEVICE_TABLE(pci, tulip_pci_tbl);


/* A full-duplex map for media types. */
const char tulip_media_cap[32] =
{0,0,0,16,  3,19,16,24,  27,4,7,5, 0,20,23,20,  28,31,0,0, };

static void tulip_tx_timeout(struct net_device *dev);
static void tulip_init_ring(struct net_device *dev);
static int tulip_start_xmit(struct sk_buff *skb, struct net_device *dev);
static int tulip_open(struct net_device *dev);
static int tulip_close(struct net_device *dev);
static void tulip_up(struct net_device *dev);
static void tulip_down(struct net_device *dev);
static struct net_device_stats *tulip_get_stats(struct net_device *dev);
static int private_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static void set_rx_mode(struct net_device *dev);



static void tulip_set_power_state (struct tulip_private *tp,
                                   int sleep, int snooze)
{
        if (tp->flags & HAS_ACPI) {
                u32 tmp, newtmp;
                pci_read_config_dword (tp->pdev, CFDD, &tmp);
                newtmp = tmp & ~(CFDD_Sleep | CFDD_Snooze);
                if (sleep)
                        newtmp |= CFDD_Sleep;
                else if (snooze)
                        newtmp |= CFDD_Snooze;
                if (tmp != newtmp)
                        pci_write_config_dword (tp->pdev, CFDD, newtmp);
        }

}


static void tulip_up(struct net_device *dev)
{
        struct tulip_private *tp = (struct tulip_private *)dev->priv;
        long ioaddr = dev->base_addr;
        int next_tick = 3*HZ;
        int i;

        /* Wake the chip from sleep/snooze mode. */
        tulip_set_power_state (tp, 0, 0);

        /* On some chip revs we must set the MII/SYM port before the reset!? */
        if (tp->mii_cnt  ||  (tp->mtable  &&  tp->mtable->has_mii))
                outl(0x00040000, ioaddr + CSR6);

        /* Reset the chip, holding bit 0 set at least 50 PCI cycles. */
        outl(0x00000001, ioaddr + CSR0);
        udelay(100);

        /* Deassert reset.
           Wait the specified 50 PCI cycles after a reset by initializing
           Tx and Rx queues and the address filter list. */
        outl(tp->csr0, ioaddr + CSR0);
        udelay(100);

        if (tulip_debug > 1)
                printk(KERN_DEBUG "%s: tulip_up(), irq==%d.\n", dev->name, dev->irq);

        outl(tp->rx_ring_dma, ioaddr + CSR3);
        outl(tp->tx_ring_dma, ioaddr + CSR4);
        tp->cur_rx = tp->cur_tx = 0;
        tp->dirty_rx = tp->dirty_tx = 0;

        if (tp->flags & MC_HASH_ONLY) {
                u32 addr_low = cpu_to_le32(get_unaligned((u32 *)dev->dev_addr));
                u32 addr_high = cpu_to_le32(get_unaligned((u16 *)(dev->dev_addr+4)));
                if (tp->chip_id == AX88140) {
                        outl(0, ioaddr + CSR13);
                        outl(addr_low,  ioaddr + CSR14);
                        outl(1, ioaddr + CSR13);
                        outl(addr_high, ioaddr + CSR14);
                } else if (tp->flags & COMET_MAC_ADDR) {
                        outl(addr_low,  ioaddr + 0xA4);
                        outl(addr_high, ioaddr + 0xA8);
                        outl(0, ioaddr + 0xAC);
                        outl(0, ioaddr + 0xB0);
                }
        } else {
                /* This is set_rx_mode(), but without starting the transmitter. */
                u16 *eaddrs = (u16 *)dev->dev_addr;
                u16 *setup_frm = &tp->setup_frame[15*6];
                dma_addr_t mapping;

                /* 21140 bug: you must add the broadcast address. */
                memset(tp->setup_frame, 0xff, sizeof(tp->setup_frame));
                /* Fill the final entry of the table with our physical address. */
                *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
                *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
                *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];

                mapping = pci_map_single(tp->pdev, tp->setup_frame,
                                         sizeof(tp->setup_frame),
                                         PCI_DMA_TODEVICE);
                tp->tx_buffers[tp->cur_tx].skb = NULL;
                tp->tx_buffers[tp->cur_tx].mapping = mapping;

                /* Put the setup frame on the Tx list. */
                tp->tx_ring[tp->cur_tx].length = cpu_to_le32(0x08000000 | 192);
                tp->tx_ring[tp->cur_tx].buffer1 = cpu_to_le32(mapping);
                tp->tx_ring[tp->cur_tx].status = cpu_to_le32(DescOwned);

                tp->cur_tx++;
        }

        tp->saved_if_port = dev->if_port;
        if (dev->if_port == 0)
                dev->if_port = tp->default_port;

        /* Allow selecting a default media. */
        i = 0;
        if (tp->mtable == NULL)
                goto media_picked;
        if (dev->if_port) {
                int looking_for = tulip_media_cap[dev->if_port] & MediaIsMII ? 11 :
                        (dev->if_port == 12 ? 0 : dev->if_port);
                for (i = 0; i < tp->mtable->leafcount; i++)
                        if (tp->mtable->mleaf[i].media == looking_for) {
                                printk(KERN_INFO "%s: Using user-specified media %s.\n",
                                           dev->name, medianame[dev->if_port]);
                                goto media_picked;
                        }
        }
        if ((tp->mtable->defaultmedia & 0x0800) == 0) {
                int looking_for = tp->mtable->defaultmedia & MEDIA_MASK;
                for (i = 0; i < tp->mtable->leafcount; i++)
                        if (tp->mtable->mleaf[i].media == looking_for) {
                                printk(KERN_INFO "%s: Using EEPROM-set media %s.\n",
                                           dev->name, medianame[looking_for]);
                                goto media_picked;
                        }
        }
        /* Start sensing first non-full-duplex media. */
        for (i = tp->mtable->leafcount - 1;
                 (tulip_media_cap[tp->mtable->mleaf[i].media] & MediaAlwaysFD) && i > 0; i--)
                ;
media_picked:

        tp->csr6 = 0;
        tp->cur_index = i;
        tp->nwayset = 0;

        if (dev->if_port) {
                if (tp->chip_id == DC21143  &&
                    (tulip_media_cap[dev->if_port] & MediaIsMII)) {
                        /* We must reset the media CSRs when we force-select MII mode. */
                        outl(0x0000, ioaddr + CSR13);
                        outl(0x0000, ioaddr + CSR14);
                        outl(0x0008, ioaddr + CSR15);
                }
                tulip_select_media(dev, 1);
        } else if (tp->chip_id == DC21142) {
                if (tp->mii_cnt) {
                        tulip_select_media(dev, 1);
                        if (tulip_debug > 1)
                                printk(KERN_INFO "%s: Using MII transceiver %d, status "
                                           "%4.4x.\n",
                                           dev->name, tp->phys[0], tulip_mdio_read(dev, tp->phys[0], 1));
                        outl(csr6_mask_defstate, ioaddr + CSR6);
                        tp->csr6 = csr6_mask_hdcap;
                        dev->if_port = 11;
                        outl(0x0000, ioaddr + CSR13);
                        outl(0x0000, ioaddr + CSR14);
                } else
                        t21142_start_nway(dev);
        } else if (tp->chip_id == PNIC2) {
                /* for initial startup advertise 10/100 Full and Half */
                tp->sym_advertise = 0x01E0;
                /* enable autonegotiate end interrupt */
                outl(inl(ioaddr+CSR5)| 0x00008010, ioaddr + CSR5);
                outl(inl(ioaddr+CSR7)| 0x00008010, ioaddr + CSR7);
                pnic2_start_nway(dev);
        } else if (tp->chip_id == LC82C168  &&  ! tp->medialock) {
                if (tp->mii_cnt) {
                        dev->if_port = 11;
                        tp->csr6 = 0x814C0000 | (tp->full_duplex ? 0x0200 : 0);
                        outl(0x0001, ioaddr + CSR15);
                } else if (inl(ioaddr + CSR5) & TPLnkPass)
                        pnic_do_nway(dev);
                else {
                        /* Start with 10mbps to do autonegotiation. */
                        outl(0x32, ioaddr + CSR12);
                        tp->csr6 = 0x00420000;
                        outl(0x0001B078, ioaddr + 0xB8);
                        outl(0x0201B078, ioaddr + 0xB8);
                        next_tick = 1*HZ;
                }
        } else if ((tp->chip_id == MX98713 || tp->chip_id == COMPEX9881)
                           && ! tp->medialock) {
                dev->if_port = 0;
                tp->csr6 = 0x01880000 | (tp->full_duplex ? 0x0200 : 0);
                outl(0x0f370000 | inw(ioaddr + 0x80), ioaddr + 0x80);
        } else if (tp->chip_id == MX98715 || tp->chip_id == MX98725) {
                /* Provided by BOLO, Macronix - 12/10/1998. */
                dev->if_port = 0;
                tp->csr6 = 0x01a80200;
                outl(0x0f370000 | inw(ioaddr + 0x80), ioaddr + 0x80);
                outl(0x11000 | inw(ioaddr + 0xa0), ioaddr + 0xa0);
        } else if (tp->chip_id == COMET || tp->chip_id == CONEXANT) {
                /* Enable automatic Tx underrun recovery. */
                outl(inl(ioaddr + 0x88) | 1, ioaddr + 0x88);
                dev->if_port = tp->mii_cnt ? 11 : 0;
                tp->csr6 = 0x00040000;
        } else if (tp->chip_id == AX88140) {
                tp->csr6 = tp->mii_cnt ? 0x00040100 : 0x00000100;
        } else
                tulip_select_media(dev, 1);

        /* Start the chip's Tx to process setup frame. */
        tulip_stop_rxtx(tp);
        barrier();
        udelay(5);
        outl(tp->csr6 | TxOn, ioaddr + CSR6);

        /* Enable interrupts by setting the interrupt mask. */
        outl(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR5);
        outl(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7);
        tulip_start_rxtx(tp);
        outl(0, ioaddr + CSR2);         /* Rx poll demand */

        if (tulip_debug > 2) {
                printk(KERN_DEBUG "%s: Done tulip_up(), CSR0 %8.8x, CSR5 %8.8x CSR6 %8.8x.\n",
                           dev->name, inl(ioaddr + CSR0), inl(ioaddr + CSR5),
                           inl(ioaddr + CSR6));
        }

        /* Set the timer to switch to check for link beat and perhaps switch
           to an alternate media type. */
        tp->timer.expires = RUN_AT(next_tick);
        add_timer(&tp->timer);
}

#ifdef CONFIG_NET_HW_FLOWCONTROL
/* Enable receiver */
void tulip_xon(struct net_device *dev)
{
        struct tulip_private *tp = (struct tulip_private *)dev->priv;

        clear_bit(tp->fc_bit, &netdev_fc_xoff);
        if (netif_running(dev)){

                tulip_refill_rx(dev);
                outl(tulip_tbl[tp->chip_id].valid_intrs,  dev->base_addr+CSR7);
        }
}
#endif

static int
tulip_open(struct net_device *dev)
{
#ifdef CONFIG_NET_HW_FLOWCONTROL
        struct tulip_private *tp = (struct tulip_private *)dev->priv;
#endif
        int retval;

        if ((retval = request_irq(dev->irq, &tulip_interrupt, SA_SHIRQ, dev->name, dev)))
                return retval;

        tulip_init_ring (dev);

        tulip_up (dev);

#ifdef CONFIG_NET_HW_FLOWCONTROL
        tp->fc_bit = netdev_register_fc(dev, tulip_xon);
#endif

        netif_start_queue (dev);

        return 0;
}


static void tulip_tx_timeout(struct net_device *dev)
{
        struct tulip_private *tp = (struct tulip_private *)dev->priv;
        long ioaddr = dev->base_addr;
        unsigned long flags;

        spin_lock_irqsave (&tp->lock, flags);

        if (tulip_media_cap[dev->if_port] & MediaIsMII) {
                /* Do nothing -- the media monitor should handle this. */
                if (tulip_debug > 1)
                        printk(KERN_WARNING "%s: Transmit timeout using MII device.\n",
                                   dev->name);
        } else if (tp->chip_id == DC21140 || tp->chip_id == DC21142
                           || tp->chip_id == MX98713 || tp->chip_id == COMPEX9881
                           || tp->chip_id == DM910X) {
                printk(KERN_WARNING "%s: 21140 transmit timed out, status %8.8x, "
                           "SIA %8.8x %8.8x %8.8x %8.8x, resetting...\n",
                           dev->name, inl(ioaddr + CSR5), inl(ioaddr + CSR12),
                           inl(ioaddr + CSR13), inl(ioaddr + CSR14), inl(ioaddr + CSR15));
                if ( ! tp->medialock  &&  tp->mtable) {
                        do
                                --tp->cur_index;
                        while (tp->cur_index >= 0
                                   && (tulip_media_cap[tp->mtable->mleaf[tp->cur_index].media]
                                           & MediaIsFD));
                        if (--tp->cur_index < 0) {
                                /* We start again, but should instead look for default. */
                                tp->cur_index = tp->mtable->leafcount - 1;
                        }
                        tulip_select_media(dev, 0);
                        printk(KERN_WARNING "%s: transmit timed out, switching to %s "
                                   "media.\n", dev->name, medianame[dev->if_port]);
                }
        } else if (tp->chip_id == PNIC2) {
                printk(KERN_WARNING "%s: PNIC2 transmit timed out, status %8.8x, "
                       "CSR6/7 %8.8x / %8.8x CSR12 %8.8x, resetting...\n",
                       dev->name, (int)inl(ioaddr + CSR5), (int)inl(ioaddr + CSR6),
                       (int)inl(ioaddr + CSR7), (int)inl(ioaddr + CSR12));
        } else {
                printk(KERN_WARNING "%s: Transmit timed out, status %8.8x, CSR12 "
                           "%8.8x, resetting...\n",
                           dev->name, inl(ioaddr + CSR5), inl(ioaddr + CSR12));
                dev->if_port = 0;
        }

#if defined(way_too_many_messages)
        if (tulip_debug > 3) {
                int i;
                for (i = 0; i < RX_RING_SIZE; i++) {
                        u8 *buf = (u8 *)(tp->rx_ring[i].buffer1);
                        int j;
                        printk(KERN_DEBUG "%2d: %8.8x %8.8x %8.8x %8.8x  "
                                   "%2.2x %2.2x %2.2x.\n",
                                   i, (unsigned int)tp->rx_ring[i].status,
                                   (unsigned int)tp->rx_ring[i].length,
                                   (unsigned int)tp->rx_ring[i].buffer1,
                                   (unsigned int)tp->rx_ring[i].buffer2,
                                   buf[0], buf[1], buf[2]);
                        for (j = 0; buf[j] != 0xee && j < 1600; j++)
                                if (j < 100) printk(" %2.2x", buf[j]);
                        printk(" j=%d.\n", j);
                }
                printk(KERN_DEBUG "  Rx ring %8.8x: ", (int)tp->rx_ring);
                for (i = 0; i < RX_RING_SIZE; i++)
                        printk(" %8.8x", (unsigned int)tp->rx_ring[i].status);
                printk("\n" KERN_DEBUG "  Tx ring %8.8x: ", (int)tp->tx_ring);
                for (i = 0; i < TX_RING_SIZE; i++)
                        printk(" %8.8x", (unsigned int)tp->tx_ring[i].status);
                printk("\n");
        }
#endif

        /* Stop and restart the chip's Tx processes . */
#ifdef CONFIG_NET_HW_FLOWCONTROL
        if (tp->fc_bit && test_bit(tp->fc_bit,&netdev_fc_xoff))
                printk("BUG tx_timeout restarting rx when fc on\n");
#endif
        tulip_restart_rxtx(tp);
        /* Trigger an immediate transmit demand. */
        outl(0, ioaddr + CSR1);

        tp->stats.tx_errors++;

        spin_unlock_irqrestore (&tp->lock, flags);
        dev->trans_start = jiffies;
        netif_wake_queue (dev);
}


/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
static void tulip_init_ring(struct net_device *dev)
{
        struct tulip_private *tp = (struct tulip_private *)dev->priv;
        int i;

        tp->susp_rx = 0;
        tp->ttimer = 0;
        tp->nir = 0;

        for (i = 0; i < RX_RING_SIZE; i++) {
                tp->rx_ring[i].status = 0x00000000;
                tp->rx_ring[i].length = cpu_to_le32(PKT_BUF_SZ);
                tp->rx_ring[i].buffer2 = cpu_to_le32(tp->rx_ring_dma + sizeof(struct tulip_rx_desc) * (i + 1));
                tp->rx_buffers[i].skb = NULL;
                tp->rx_buffers[i].mapping = 0;
        }
        /* Mark the last entry as wrapping the ring. */
        tp->rx_ring[i-1].length = cpu_to_le32(PKT_BUF_SZ | DESC_RING_WRAP);
        tp->rx_ring[i-1].buffer2 = cpu_to_le32(tp->rx_ring_dma);

        for (i = 0; i < RX_RING_SIZE; i++) {
                dma_addr_t mapping;

                /* Note the receive buffer must be longword aligned.
                   dev_alloc_skb() provides 16 byte alignment.  But do *not*
                   use skb_reserve() to align the IP header! */
                struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ);
                tp->rx_buffers[i].skb = skb;
                if (skb == NULL)
                        break;
                mapping = pci_map_single(tp->pdev, skb->tail,
                                         PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
                tp->rx_buffers[i].mapping = mapping;
                skb->dev = dev;                 /* Mark as being used by this device. */
                tp->rx_ring[i].status = cpu_to_le32(DescOwned); /* Owned by Tulip chip */
                tp->rx_ring[i].buffer1 = cpu_to_le32(mapping);
        }
        tp->dirty_rx = (unsigned int)(i - RX_RING_SIZE);

        /* The Tx buffer descriptor is filled in as needed, but we
           do need to clear the ownership bit. */
        for (i = 0; i < TX_RING_SIZE; i++) {
                tp->tx_buffers[i].skb = NULL;
                tp->tx_buffers[i].mapping = 0;
                tp->tx_ring[i].status = 0x00000000;
                tp->tx_ring[i].buffer2 = cpu_to_le32(tp->tx_ring_dma + sizeof(struct tulip_tx_desc) * (i + 1));
        }
        tp->tx_ring[i-1].buffer2 = cpu_to_le32(tp->tx_ring_dma);
}

static int
tulip_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
        struct tulip_private *tp = (struct tulip_private *)dev->priv;
        int entry;
        u32 flag;
        dma_addr_t mapping;

        spin_lock_irq(&tp->lock);

        /* Calculate the next Tx descriptor entry. */
        entry = tp->cur_tx % TX_RING_SIZE;

        tp->tx_buffers[entry].skb = skb;
        mapping = pci_map_single(tp->pdev, skb->data,
                                 skb->len, PCI_DMA_TODEVICE);
        tp->tx_buffers[entry].mapping = mapping;
        tp->tx_ring[entry].buffer1 = cpu_to_le32(mapping);

        if (tp->cur_tx - tp->dirty_tx < TX_RING_SIZE/2) {/* Typical path */
                flag = 0x60000000; /* No interrupt */
        } else if (tp->cur_tx - tp->dirty_tx == TX_RING_SIZE/2) {
                flag = 0xe0000000; /* Tx-done intr. */
        } else if (tp->cur_tx - tp->dirty_tx < TX_RING_SIZE - 2) {
                flag = 0x60000000; /* No Tx-done intr. */
        } else {                /* Leave room for set_rx_mode() to fill entries. */
                flag = 0xe0000000; /* Tx-done intr. */
                netif_stop_queue(dev);
        }
        if (entry == TX_RING_SIZE-1)
                flag = 0xe0000000 | DESC_RING_WRAP;

        tp->tx_ring[entry].length = cpu_to_le32(skb->len | flag);
        /* if we were using Transmit Automatic Polling, we would need a
         * wmb() here. */
        tp->tx_ring[entry].status = cpu_to_le32(DescOwned);
        wmb();

        tp->cur_tx++;

        /* Trigger an immediate transmit demand. */
        outl(0, dev->base_addr + CSR1);

        spin_unlock_irq(&tp->lock);

        dev->trans_start = jiffies;

        return 0;
}

static void tulip_clean_tx_ring(struct tulip_private *tp)
{
        unsigned int dirty_tx;

        for (dirty_tx = tp->dirty_tx ; tp->cur_tx - dirty_tx > 0;
                dirty_tx++) {
                int entry = dirty_tx % TX_RING_SIZE;
                int status = le32_to_cpu(tp->tx_ring[entry].status);

                if (status < 0) {
                        tp->stats.tx_errors++;  /* It wasn't Txed */
                        tp->tx_ring[entry].status = 0;
                }

                /* Check for Tx filter setup frames. */
                if (tp->tx_buffers[entry].skb == NULL) {
                        /* test because dummy frames not mapped */
                        if (tp->tx_buffers[entry].mapping)
                                pci_unmap_single(tp->pdev,
                                        tp->tx_buffers[entry].mapping,
                                        sizeof(tp->setup_frame),
                                        PCI_DMA_TODEVICE);
                        continue;
                }

                pci_unmap_single(tp->pdev, tp->tx_buffers[entry].mapping,
                                tp->tx_buffers[entry].skb->len,
                                PCI_DMA_TODEVICE);

                /* Free the original skb. */
                dev_kfree_skb_irq(tp->tx_buffers[entry].skb);
                tp->tx_buffers[entry].skb = NULL;
                tp->tx_buffers[entry].mapping = 0;
        }
}

static void tulip_down (struct net_device *dev)
{
        long ioaddr = dev->base_addr;
        struct tulip_private *tp = (struct tulip_private *) dev->priv;
        unsigned long flags;

        del_timer_sync (&tp->timer);

        spin_lock_irqsave (&tp->lock, flags);

        /* Disable interrupts by clearing the interrupt mask. */
        outl (0x00000000, ioaddr + CSR7);

        /* Stop the Tx and Rx processes. */
        tulip_stop_rxtx(tp);

        /* prepare receive buffers */
        tulip_refill_rx(dev);

        /* release any unconsumed transmit buffers */
        tulip_clean_tx_ring(tp);

        if (inl (ioaddr + CSR6) != 0xffffffff)
                tp->stats.rx_missed_errors += inl (ioaddr + CSR8) & 0xffff;

        spin_unlock_irqrestore (&tp->lock, flags);

        init_timer(&tp->timer);
        tp->timer.data = (unsigned long)dev;
        tp->timer.function = tulip_tbl[tp->chip_id].media_timer;

        dev->if_port = tp->saved_if_port;

        /* Leave the driver in snooze, not sleep, mode. */
        tulip_set_power_state (tp, 0, 1);
}


static int tulip_close (struct net_device *dev)
{
        long ioaddr = dev->base_addr;
        struct tulip_private *tp = (struct tulip_private *) dev->priv;
        int i;

        netif_stop_queue (dev);

#ifdef CONFIG_NET_HW_FLOWCONTROL
        if (tp->fc_bit) {
                int bit = tp->fc_bit;
                tp->fc_bit = 0;
                netdev_unregister_fc(bit);
        }
#endif
        tulip_down (dev);

        if (tulip_debug > 1)
                printk (KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n",
                        dev->name, inl (ioaddr + CSR5));

        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 = tp->rx_buffers[i].skb;
                dma_addr_t mapping = tp->rx_buffers[i].mapping;

                tp->rx_buffers[i].skb = NULL;
                tp->rx_buffers[i].mapping = 0;

                tp->rx_ring[i].status = 0;      /* Not owned by Tulip chip. */
                tp->rx_ring[i].length = 0;
                tp->rx_ring[i].buffer1 = 0xBADF00D0;    /* An invalid address. */
                if (skb) {
                        pci_unmap_single(tp->pdev, mapping, PKT_BUF_SZ,
                                         PCI_DMA_FROMDEVICE);
                        dev_kfree_skb (skb);
                }
        }
        for (i = 0; i < TX_RING_SIZE; i++) {
                struct sk_buff *skb = tp->tx_buffers[i].skb;

                if (skb != NULL) {
                        pci_unmap_single(tp->pdev, tp->tx_buffers[i].mapping,
                                         skb->len, PCI_DMA_TODEVICE);
                        dev_kfree_skb (skb);
                }
                tp->tx_buffers[i].skb = NULL;
                tp->tx_buffers[i].mapping = 0;
        }

        return 0;
}

static struct net_device_stats *tulip_get_stats(struct net_device *dev)
{
        struct tulip_private *tp = (struct tulip_private *)dev->priv;
        long ioaddr = dev->base_addr;

        if (netif_running(dev)) {
                unsigned long flags;

                spin_lock_irqsave (&tp->lock, flags);

                tp->stats.rx_missed_errors += inl(ioaddr + CSR8) & 0xffff;

                spin_unlock_irqrestore(&tp->lock, flags);
        }

        return &tp->stats;
}


static int netdev_ethtool_ioctl(struct net_device *dev, void *useraddr)
{
        struct tulip_private *np = dev->priv;
        u32 ethcmd;

        if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
                return -EFAULT;

        switch (ethcmd) {
        case ETHTOOL_GDRVINFO: {
                struct ethtool_drvinfo info = {ETHTOOL_GDRVINFO};
                strcpy(info.driver, DRV_NAME);
                strcpy(info.version, DRV_VERSION);
                strcpy(info.bus_info, pci_name(np->pdev));
                if (copy_to_user(useraddr, &info, sizeof(info)))
                        return -EFAULT;
                return 0;
        }

        }

        return -EOPNOTSUPP;
}

/* Provide ioctl() calls to examine the MII xcvr state. */
static int private_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
{
        struct tulip_private *tp = dev->priv;
        long ioaddr = dev->base_addr;
        struct mii_ioctl_data *data = (struct mii_ioctl_data *) & rq->ifr_data;
        const unsigned int phy_idx = 0;
        int phy = tp->phys[phy_idx] & 0x1f;
        unsigned int regnum = data->reg_num;

        switch (cmd) {
        case SIOCETHTOOL:
                return netdev_ethtool_ioctl(dev, (void *) rq->ifr_data);

        case SIOCGMIIPHY:               /* Get address of MII PHY in use. */
                if (tp->mii_cnt)
                        data->phy_id = phy;
                else if (tp->flags & HAS_NWAY)
                        data->phy_id = 32;
                else if (tp->chip_id == COMET)
                        data->phy_id = 1;
                else
                        return -ENODEV;

        case SIOCGMIIREG:               /* Read MII PHY register. */
                if (data->phy_id == 32 && (tp->flags & HAS_NWAY)) {
                        int csr12 = inl (ioaddr + CSR12);
                        int csr14 = inl (ioaddr + CSR14);
                        switch (regnum) {
                        case 0:
                                if (((csr14<<5) & 0x1000) ||
                                        (dev->if_port == 5 && tp->nwayset))
                                        data->val_out = 0x1000;
                                else
                                        data->val_out = (tulip_media_cap[dev->if_port]&MediaIs100 ? 0x2000 : 0)
                                                | (tulip_media_cap[dev->if_port]&MediaIsFD ? 0x0100 : 0);
                                break;
                        case 1:
                                data->val_out =
                                        0x1848 +
                                        ((csr12&0x7000) == 0x5000 ? 0x20 : 0) +
                                        ((csr12&0x06) == 6 ? 0 : 4);
                                data->val_out |= 0x6048;
                                break;
                        case 4:
                                /* Advertised value, bogus 10baseTx-FD value from CSR6. */
                                data->val_out =
                                        ((inl(ioaddr + CSR6) >> 3) & 0x0040) +
                                        ((csr14 >> 1) & 0x20) + 1;
                                data->val_out |= ((csr14 >> 9) & 0x03C0);
                                break;
                        case 5: data->val_out = tp->lpar; break;
                        default: data->val_out = 0; break;
                        }
                } else {
                        data->val_out = tulip_mdio_read (dev, data->phy_id & 0x1f, regnum);
                }
                return 0;

        case SIOCSMIIREG:               /* Write MII PHY register. */
                if (!capable (CAP_NET_ADMIN))
                        return -EPERM;
                if (regnum & ~0x1f)
                        return -EINVAL;
                if (data->phy_id == phy) {
                        u16 value = data->val_in;
                        switch (regnum) {
                        case 0: /* Check for autonegotiation on or reset. */
                                tp->full_duplex_lock = (value & 0x9000) ? 0 : 1;
                                if (tp->full_duplex_lock)
                                        tp->full_duplex = (value & 0x0100) ? 1 : 0;
                                break;
                        case 4:
                                tp->advertising[phy_idx] =
                                tp->mii_advertise = data->val_in;
                                break;
                        }
                }
                if (data->phy_id == 32 && (tp->flags & HAS_NWAY)) {
                        u16 value = data->val_in;
                        if (regnum == 0) {
                          if ((value & 0x1200) == 0x1200) {
                            if (tp->chip_id == PNIC2) {
                                   pnic2_start_nway (dev);
                            } else {
                                   t21142_start_nway (dev);
                            }
                          }
                        } else if (regnum == 4)
                                tp->sym_advertise = value;
                } else {
                        tulip_mdio_write (dev, data->phy_id & 0x1f, regnum, data->val_in);
                }
                return 0;
        default:
                return -EOPNOTSUPP;
        }

        return -EOPNOTSUPP;
}


/* Set or clear the multicast filter for this adaptor.
   Note that we only use exclusion around actually queueing the
   new frame, not around filling tp->setup_frame.  This is non-deterministic
   when re-entered but still correct. */

#undef set_bit_le
#define set_bit_le(i,p) do { ((char *)(p))[(i)/8] |= (1<<((i)%8)); } while(0)

static void build_setup_frame_hash(u16 *setup_frm, struct net_device *dev)
{
        struct tulip_private *tp = (struct tulip_private *)dev->priv;
        u16 hash_table[32];
        struct dev_mc_list *mclist;
        int i;
        u16 *eaddrs;

        memset(hash_table, 0, sizeof(hash_table));
        set_bit_le(255, hash_table);                    /* Broadcast entry */
        /* This should work on big-endian machines as well. */
        for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
             i++, mclist = mclist->next) {
                int index = ether_crc_le(ETH_ALEN, mclist->dmi_addr) & 0x1ff;

                set_bit_le(index, hash_table);

        }
        for (i = 0; i < 32; i++) {
                *setup_frm++ = hash_table[i];
                *setup_frm++ = hash_table[i];
        }
        setup_frm = &tp->setup_frame[13*6];

        /* Fill the final entry with our physical address. */
        eaddrs = (u16 *)dev->dev_addr;
        *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
        *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
        *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];
}

static void build_setup_frame_perfect(u16 *setup_frm, struct net_device *dev)
{
        struct tulip_private *tp = (struct tulip_private *)dev->priv;
        struct dev_mc_list *mclist;
        int i;
        u16 *eaddrs;

        /* We have <= 14 addresses so we can use the wonderful
           16 address perfect filtering of the Tulip. */
        for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
             i++, mclist = mclist->next) {
                eaddrs = (u16 *)mclist->dmi_addr;
                *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
                *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
                *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
        }
        /* Fill the unused entries with the broadcast address. */
        memset(setup_frm, 0xff, (15-i)*12);
        setup_frm = &tp->setup_frame[15*6];

        /* Fill the final entry with our physical address. */
        eaddrs = (u16 *)dev->dev_addr;
        *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
        *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
        *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];
}


static void set_rx_mode(struct net_device *dev)
{
        struct tulip_private *tp = (struct tulip_private *)dev->priv;
        long ioaddr = dev->base_addr;
        int csr6;

        csr6 = inl(ioaddr + CSR6) & ~0x00D5;

        tp->csr6 &= ~0x00D5;
        if (dev->flags & IFF_PROMISC) {                 /* Set promiscuous. */
                tp->csr6 |= AcceptAllMulticast | AcceptAllPhys;
                csr6 |= AcceptAllMulticast | AcceptAllPhys;
                /* Unconditionally log net taps. */
                printk(KERN_INFO "%s: Promiscuous mode enabled.\n", dev->name);
        } else if ((dev->mc_count > 1000)  ||  (dev->flags & IFF_ALLMULTI)) {
                /* Too many to filter well -- accept all multicasts. */
                tp->csr6 |= AcceptAllMulticast;
                csr6 |= AcceptAllMulticast;
        } else  if (tp->flags & MC_HASH_ONLY) {
                /* Some work-alikes have only a 64-entry hash filter table. */
                /* Should verify correctness on big-endian/__powerpc__ */
                struct dev_mc_list *mclist;
                int i;
                if (dev->mc_count > 64) {               /* Arbitrary non-effective limit. */
                        tp->csr6 |= AcceptAllMulticast;
                        csr6 |= AcceptAllMulticast;
                } else {
                        u32 mc_filter[2] = {0, 0};               /* Multicast hash filter */
                        int filterbit;
                        for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
                                 i++, mclist = mclist->next) {
                                if (tp->flags & COMET_MAC_ADDR)
                                        filterbit = ether_crc_le(ETH_ALEN, mclist->dmi_addr);
                                else
                                        filterbit = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
                                filterbit &= 0x3f;
                                mc_filter[filterbit >> 5] |= cpu_to_le32(1 << (filterbit & 31));
                                if (tulip_debug > 2) {
                                        printk(KERN_INFO "%s: Added filter for %2.2x:%2.2x:%2.2x:"
                                                   "%2.2x:%2.2x:%2.2x  %8.8x bit %d.\n", dev->name,
                                                   mclist->dmi_addr[0], mclist->dmi_addr[1],
                                                   mclist->dmi_addr[2], mclist->dmi_addr[3],
                                                   mclist->dmi_addr[4], mclist->dmi_addr[5],
                                                   ether_crc(ETH_ALEN, mclist->dmi_addr), filterbit);
                                }
                        }
                        if (mc_filter[0] == tp->mc_filter[0]  &&
                                mc_filter[1] == tp->mc_filter[1])
                                ;                               /* No change. */
                        else if (tp->flags & IS_ASIX) {
                                outl(2, ioaddr + CSR13);
                                outl(mc_filter[0], ioaddr + CSR14);
                                outl(3, ioaddr + CSR13);
                                outl(mc_filter[1], ioaddr + CSR14);
                        } else if (tp->flags & COMET_MAC_ADDR) {
                                outl(mc_filter[0], ioaddr + 0xAC);
                                outl(mc_filter[1], ioaddr + 0xB0);
                        }
                        tp->mc_filter[0] = mc_filter[0];
                        tp->mc_filter[1] = mc_filter[1];
                }
        } else {
                unsigned long flags;
                u32 tx_flags = 0x08000000 | 192;

                /* Note that only the low-address shortword of setup_frame is valid!
                   The values are doubled for big-endian architectures. */
                if (dev->mc_count > 14) { /* Must use a multicast hash table. */
                        build_setup_frame_hash(tp->setup_frame, dev);
                        tx_flags = 0x08400000 | 192;
                } else {
                        build_setup_frame_perfect(tp->setup_frame, dev);
                }

                spin_lock_irqsave(&tp->lock, flags);

                if (tp->cur_tx - tp->dirty_tx > TX_RING_SIZE - 2) {
                        /* Same setup recently queued, we need not add it. */
                } else {
                        unsigned int entry;
                        int dummy = -1;

                        /* Now add this frame to the Tx list. */

                        entry = tp->cur_tx++ % TX_RING_SIZE;

                        if (entry != 0) {
                                /* Avoid a chip errata by prefixing a dummy entry. */
                                tp->tx_buffers[entry].skb = NULL;
                                tp->tx_buffers[entry].mapping = 0;
                                tp->tx_ring[entry].length =
                                        (entry == TX_RING_SIZE-1) ? cpu_to_le32(DESC_RING_WRAP) : 0;
                                tp->tx_ring[entry].buffer1 = 0;
                                /* Must set DescOwned later to avoid race with chip */
                                dummy = entry;
                                entry = tp->cur_tx++ % TX_RING_SIZE;
                        }

                        tp->tx_buffers[entry].skb = NULL;
                        tp->tx_buffers[entry].mapping =
                                pci_map_single(tp->pdev, tp->setup_frame,
                                               sizeof(tp->setup_frame),
                                               PCI_DMA_TODEVICE);
                        /* Put the setup frame on the Tx list. */
                        if (entry == TX_RING_SIZE-1)
                                tx_flags |= DESC_RING_WRAP;             /* Wrap ring. */
                        tp->tx_ring[entry].length = cpu_to_le32(tx_flags);
                        tp->tx_ring[entry].buffer1 =
                                cpu_to_le32(tp->tx_buffers[entry].mapping);
                        tp->tx_ring[entry].status = cpu_to_le32(DescOwned);
                        if (dummy >= 0)
                                tp->tx_ring[dummy].status = cpu_to_le32(DescOwned);
                        if (tp->cur_tx - tp->dirty_tx >= TX_RING_SIZE - 2)
                                netif_stop_queue(dev);

                        /* Trigger an immediate transmit demand. */
                        outl(0, ioaddr + CSR1);
                }

                spin_unlock_irqrestore(&tp->lock, flags);
        }

        outl(csr6, ioaddr + CSR6);
}

#ifdef CONFIG_TULIP_MWI
static void __devinit tulip_mwi_config (struct pci_dev *pdev,
                                        struct net_device *dev)
{
        struct tulip_private *tp = dev->priv;
        u8 cache;
        u16 pci_command;
        u32 csr0;

        if (tulip_debug > 3)
                printk(KERN_DEBUG "%s: tulip_mwi_config()\n", pci_name(pdev));

        tp->csr0 = csr0 = 0;

        /* if we have any cache line size at all, we can do MRM */
        csr0 |= MRM;

        /* ...and barring hardware bugs, MWI */
        if (!(tp->chip_id == DC21143 && tp->revision == 65))
                csr0 |= MWI;

        /* set or disable MWI in the standard PCI command bit.
         * Check for the case where  mwi is desired but not available
         */
        if (csr0 & MWI) pci_set_mwi(pdev);
        else            pci_clear_mwi(pdev);

        /* read result from hardware (in case bit refused to enable) */
        pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
        if ((csr0 & MWI) && (!(pci_command & PCI_COMMAND_INVALIDATE)))
                csr0 &= ~MWI;

        /* if cache line size hardwired to zero, no MWI */
        pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache);
        if ((csr0 & MWI) && (cache == 0)) {
                csr0 &= ~MWI;
                pci_clear_mwi(pdev);
        }

        /* assign per-cacheline-size cache alignment and
         * burst length values
         */
        switch (cache) {
        case 8:
                csr0 |= MRL | (1 << CALShift) | (16 << BurstLenShift);
                break;
        case 16:
                csr0 |= MRL | (2 << CALShift) | (16 << BurstLenShift);
                break;
        case 32:
                csr0 |= MRL | (3 << CALShift) | (32 << BurstLenShift);
                break;
        default:
                cache = 0;
                break;
        }

        /* if we have a good cache line size, we by now have a good
         * csr0, so save it and exit
         */
        if (cache)
                goto out;

        /* we don't have a good csr0 or cache line size, disable MWI */
        if (csr0 & MWI) {
                pci_clear_mwi(pdev);
                csr0 &= ~MWI;
        }

        /* sane defaults for burst length and cache alignment
         * originally from de4x5 driver
         */
        csr0 |= (8 << BurstLenShift) | (1 << CALShift);

out:
        tp->csr0 = csr0;
        if (tulip_debug > 2)
                printk(KERN_DEBUG "%s: MWI config cacheline=%d, csr0=%08x\n",
                       pci_name(pdev), cache, csr0);
}
#endif

static int __devinit tulip_init_one (struct pci_dev *pdev,
                                     const struct pci_device_id *ent)
{
        struct tulip_private *tp;
        /* See note below on the multiport cards. */
        static unsigned char last_phys_addr[6] = {0x00, 'L', 'i', 'n', 'u', 'x'};
        static int last_irq;
        static int multiport_cnt;       /* For four-port boards w/one EEPROM */
        u8 chip_rev;
        int i, irq;
        unsigned short sum;
        unsigned char *ee_data;
        struct net_device *dev;
        long ioaddr;
        static int board_idx = -1;
        int chip_idx = ent->driver_data;
        unsigned int eeprom_missing = 0;
        unsigned int force_csr0 = 0;

#ifndef MODULE
        static int did_version;         /* Already printed version info. */
        if (tulip_debug > 0  &&  did_version++ == 0)
                printk (KERN_INFO "%s", version);
#endif

        board_idx++;

        /*
         *      Lan media wire a tulip chip to a wan interface. Needs a very
         *      different driver (lmc driver)
         */

        if (pdev->subsystem_vendor == PCI_VENDOR_ID_LMC) {
                printk (KERN_ERR PFX "skipping LMC card.\n");
                return -ENODEV;
        }

        /*
         *      Early DM9100's need software CRC and the DMFE driver
         */

        if (pdev->vendor == 0x1282 && pdev->device == 0x9100)
        {
                u32 dev_rev;
                /* Read Chip revision */
                pci_read_config_dword(pdev, PCI_REVISION_ID, &dev_rev);
                if(dev_rev < 0x02000030)
                {
                        printk(KERN_ERR PFX "skipping early DM9100 with Crc bug (use dmfe)\n");
                        return -ENODEV;
                }
        }

        /*
         *      Looks for early PCI chipsets where people report hangs
         *      without the workarounds being on.
         */

        /* Intel Saturn. Switch to 8 long words burst, 8 long word cache aligned
           Aries might need this too. The Saturn errata are not pretty reading but
           thankfully it's an old 486 chipset.
        */

        if (pci_find_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82424, NULL)) {
                csr0 = MRL | MRM | (8 << BurstLenShift) | (1 << CALShift);
                force_csr0 = 1;
        }
        /* The dreaded SiS496 486 chipset. Same workaround as above. */
        if (pci_find_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, NULL)) {
                csr0 = MRL | MRM | (8 << BurstLenShift) | (1 << CALShift);
                force_csr0 = 1;
        }

        /* bugfix: the ASIX must have a burst limit or horrible things happen. */
        if (chip_idx == AX88140) {
                if ((csr0 & 0x3f00) == 0)
                        csr0 |= 0x2000;
        }

        /* PNIC doesn't have MWI/MRL/MRM... */
        if (chip_idx == LC82C168)
                csr0 &= ~0xfff10000; /* zero reserved bits 31:20, 16 */

        /* DM9102A has troubles with MRM & clear reserved bits 24:22, 20, 16, 7:1 */
        if ((pdev->vendor == 0x1282 && pdev->device == 0x9102)
                || (pdev->vendor == 0x10b9 && pdev->device == 0x5261))
                csr0 &= ~0x01f100ff;

#if defined(__sparc__)
        /* DM9102A needs 32-dword alignment/burst length on sparc - chip bug? */
        if ((pdev->vendor == 0x1282 && pdev->device == 0x9102)
                || (pdev->vendor == 0x10b9 && pdev->device == 0x5261))
                csr0 = (csr0 & ~0xff00) | 0xe000;
#endif

        /*
         *      And back to business
         */

        i = pci_enable_device(pdev);
        if (i) {
                printk (KERN_ERR PFX
                        "Cannot enable tulip board #%d, aborting\n",
                        board_idx);
                return i;
        }

        ioaddr = pci_resource_start (pdev, 0);
        irq = pdev->irq;

        /* alloc_etherdev ensures aligned and zeroed private structures */
        dev = alloc_etherdev (sizeof (*tp));
        if (!dev) {
                printk (KERN_ERR PFX "ether device alloc failed, aborting\n");
                return -ENOMEM;
        }

        SET_MODULE_OWNER(dev);
        SET_NETDEV_DEV(dev, &pdev->dev);
        if (pci_resource_len (pdev, 0) < tulip_tbl[chip_idx].io_size) {
                printk (KERN_ERR PFX "%s: I/O region (0x%lx@0x%lx) too small, "
                        "aborting\n", pci_name(pdev),
                        pci_resource_len (pdev, 0),
                        pci_resource_start (pdev, 0));
                goto err_out_free_netdev;
        }

        /* grab all resources from both PIO and MMIO regions, as we
         * don't want anyone else messing around with our hardware */
        if (pci_request_regions (pdev, "tulip"))
                goto err_out_free_netdev;

#ifndef USE_IO_OPS
        ioaddr = (unsigned long) ioremap (pci_resource_start (pdev, 1),
                                          tulip_tbl[chip_idx].io_size);
        if (!ioaddr)
                goto err_out_free_res;
#endif

        pci_read_config_byte (pdev, PCI_REVISION_ID, &chip_rev);

        /*
         * initialize private data structure 'tp'
         * it is zeroed and aligned in alloc_etherdev
         */
        tp = dev->priv;

        tp->rx_ring = pci_alloc_consistent(pdev,
                                           sizeof(struct tulip_rx_desc) * RX_RING_SIZE +
                                           sizeof(struct tulip_tx_desc) * TX_RING_SIZE,
                                           &tp->rx_ring_dma);
        if (!tp->rx_ring)
                goto err_out_mtable;
        tp->tx_ring = (struct tulip_tx_desc *)(tp->rx_ring + RX_RING_SIZE);
        tp->tx_ring_dma = tp->rx_ring_dma + sizeof(struct tulip_rx_desc) * RX_RING_SIZE;

        tp->chip_id = chip_idx;
        tp->flags = tulip_tbl[chip_idx].flags;
        tp->pdev = pdev;
        tp->base_addr = ioaddr;
        tp->revision = chip_rev;
        tp->csr0 = csr0;
        spin_lock_init(&tp->lock);
        spin_lock_init(&tp->mii_lock);
        init_timer(&tp->timer);
        tp->timer.data = (unsigned long)dev;
        tp->timer.function = tulip_tbl[tp->chip_id].media_timer;

        dev->base_addr = ioaddr;

#ifdef CONFIG_TULIP_MWI
        if (!force_csr0 && (tp->flags & HAS_PCI_MWI))
                tulip_mwi_config (pdev, dev);
#else
        /* MWI is broken for DC21143 rev 65... */
        if (chip_idx == DC21143 && chip_rev == 65)
                tp->csr0 &= ~MWI;
#endif

        /* Stop the chip's Tx and Rx processes. */
        tulip_stop_rxtx(tp);

        pci_set_master(pdev);

        /* Clear the missed-packet counter. */
        inl(ioaddr + CSR8);

        /* The station address ROM is read byte serially.  The register must
           be polled, waiting for the value to be read bit serially from the
           EEPROM.
           */
        ee_data = tp->eeprom;
        sum = 0;
        if (chip_idx == LC82C168) {
                for (i = 0; i < 3; i++) {
                        int value, boguscnt = 100000;
                        outl(0x600 | i, ioaddr + 0x98);
                        do
                                value = inl(ioaddr + CSR9);
                        while (value < 0  && --boguscnt > 0);
                        put_unaligned(le16_to_cpu(value), ((u16*)dev->dev_addr) + i);
                        sum += value & 0xffff;
                }
        } else if (chip_idx == COMET) {
                /* No need to read the EEPROM. */
                put_unaligned(inl(ioaddr + 0xA4), (u32 *)dev->dev_addr);
                put_unaligned(inl(ioaddr + 0xA8), (u16 *)(dev->dev_addr + 4));
                for (i = 0; i < 6; i ++)
                        sum += dev->dev_addr[i];
        } else {
                /* A serial EEPROM interface, we read now and sort it out later. */
                int sa_offset = 0;
                int ee_addr_size = tulip_read_eeprom(ioaddr, 0xff, 8) & 0x40000 ? 8 : 6;

                for (i = 0; i < sizeof(tp->eeprom)/2; i++)
                        ((u16 *)ee_data)[i] =
                                le16_to_cpu(tulip_read_eeprom(ioaddr, i, ee_addr_size));

                /* DEC now has a specification (see Notes) but early board makers
                   just put the address in the first EEPROM locations. */
                /* This does  memcmp(ee_data, ee_data+16, 8) */
                for (i = 0; i < 8; i ++)
                        if (ee_data[i] != ee_data[16+i])
                                sa_offset = 20;
                if (chip_idx == CONEXANT) {
                        /* Check that the tuple type and length is correct. */
                        if (ee_data[0x198] == 0x04  &&  ee_data[0x199] == 6)
                                sa_offset = 0x19A;
                } else if (ee_data[0] == 0xff  &&  ee_data[1] == 0xff &&
                                   ee_data[2] == 0) {
                        sa_offset = 2;          /* Grrr, damn Matrox boards. */
                        multiport_cnt = 4;
                }
#ifdef CONFIG_DDB5476
                if ((pdev->bus->number == 0) && (PCI_SLOT(pdev->devfn) == 6)) {
                        /* DDB5476 MAC address in first EEPROM locations. */
                       sa_offset = 0;
                       /* No media table either */
                       tp->flags &= ~HAS_MEDIA_TABLE;
               }
#endif
#ifdef CONFIG_DDB5477
               if ((pdev->bus->number == 0) && (PCI_SLOT(pdev->devfn) == 4)) {
                       /* DDB5477 MAC address in first EEPROM locations. */
                       sa_offset = 0;
                       /* No media table either */
                       tp->flags &= ~HAS_MEDIA_TABLE;
               }
#endif
#ifdef CONFIG_MIPS_COBALT
               if ((pdev->bus->number == 0) && 
                   ((PCI_SLOT(pdev->devfn) == 7) ||
                    (PCI_SLOT(pdev->devfn) == 12))) {
                       /* Cobalt MAC address in first EEPROM locations. */
                       sa_offset = 0;
                       /* No media table either */
                       tp->flags &= ~HAS_MEDIA_TABLE;
               }
#endif
#ifdef __hppa__
                /* 3x5 HSC (J3514A) has a broken srom */
                if(ee_data[0] == 0x61 && ee_data[1] == 0x10) {
                        /* pci_vendor_id and subsystem_id are swapped */
                        ee_data[0] = ee_data[2];
                        ee_data[1] = ee_data[3];
                        ee_data[2] = 0x61;
                        ee_data[3] = 0x10;

                        /* srom need to be byte-swaped and shifted up 1 word.  
                         * This shift needs to happen at the end of the MAC
                         * first because of the 2 byte overlap.
                         */
                        for(i = 4; i >= 0; i -= 2) {
                                ee_data[17 + i + 3] = ee_data[17 + i];
                                ee_data[16 + i + 5] = ee_data[16 + i];
                        }
                }
#endif
                for (i = 0; i < 6; i ++) {
                        dev->dev_addr[i] = ee_data[i + sa_offset];
                        sum += ee_data[i + sa_offset];
                }
        }
        /* Lite-On boards have the address byte-swapped. */
        if ((dev->dev_addr[0] == 0xA0  ||  dev->dev_addr[0] == 0xC0)
                &&  dev->dev_addr[1] == 0x00)
                for (i = 0; i < 6; i+=2) {
                        char tmp = dev->dev_addr[i];
                        dev->dev_addr[i] = dev->dev_addr[i+1];
                        dev->dev_addr[i+1] = tmp;
                }
        /* On the Zynx 315 Etherarray and other multiport boards only the
           first Tulip has an EEPROM.
           On Sparc systems the mac address is held in the OBP property
           "local-mac-address".
           The addresses of the subsequent ports are derived from the first.
           Many PCI BIOSes also incorrectly report the IRQ line, so we correct
           that here as well. */
        if (sum == 0  || sum == 6*0xff) {
#if defined(__sparc__)
                struct pcidev_cookie *pcp = pdev->sysdata;
#endif
                eeprom_missing = 1;
                for (i = 0; i < 5; i++)
                        dev->dev_addr[i] = last_phys_addr[i];
                dev->dev_addr[i] = last_phys_addr[i] + 1;
#if defined(__sparc__)
                if ((pcp != NULL) && prom_getproplen(pcp->prom_node,
                        "local-mac-address") == 6) {
                        prom_getproperty(pcp->prom_node, "local-mac-address",
                            dev->dev_addr, 6);
                }
#endif
#if defined(__i386__)           /* Patch up x86 BIOS bug. */
                if (last_irq)
                        irq = last_irq;
#endif
        }

        for (i = 0; i < 6; i++)
                last_phys_addr[i] = dev->dev_addr[i];
        last_irq = irq;
        dev->irq = irq;

        /* The lower four bits are the media type. */
        if (board_idx >= 0  &&  board_idx < MAX_UNITS) {
                if (options[board_idx] & MEDIA_MASK)
                        tp->default_port = options[board_idx] & MEDIA_MASK;
                if ((options[board_idx] & FullDuplex) || full_duplex[board_idx] > 0)
                        tp->full_duplex = 1;
                if (mtu[board_idx] > 0)
                        dev->mtu = mtu[board_idx];
        }
        if (dev->mem_start & MEDIA_MASK)
                tp->default_port = dev->mem_start & MEDIA_MASK;
        if (tp->default_port) {
                printk(KERN_INFO "tulip%d: Transceiver selection forced to %s.\n",
                       board_idx, medianame[tp->default_port & MEDIA_MASK]);
                tp->medialock = 1;
                if (tulip_media_cap[tp->default_port] & MediaAlwaysFD)
                        tp->full_duplex = 1;
        }
        if (tp->full_duplex)
                tp->full_duplex_lock = 1;

        if (tulip_media_cap[tp->default_port] & MediaIsMII) {
                u16 media2advert[] = { 0x20, 0x40, 0x03e0, 0x60, 0x80, 0x100, 0x200 };
                tp->mii_advertise = media2advert[tp->default_port - 9];
                tp->mii_advertise |= (tp->flags & HAS_8023X); /* Matching bits! */
        }

        if (tp->flags & HAS_MEDIA_TABLE) {
                sprintf(dev->name, "tulip%d", board_idx);       /* hack */
                tulip_parse_eeprom(dev);
                strcpy(dev->name, "eth%d");                     /* un-hack */
        }

        if ((tp->flags & ALWAYS_CHECK_MII) ||
                (tp->mtable  &&  tp->mtable->has_mii) ||
                ( ! tp->mtable  &&  (tp->flags & HAS_MII))) {
                if (tp->mtable  &&  tp->mtable->has_mii) {
                        for (i = 0; i < tp->mtable->leafcount; i++)
                                if (tp->mtable->mleaf[i].media == 11) {
                                        tp->cur_index = i;
                                        tp->saved_if_port = dev->if_port;
                                        tulip_select_media(dev, 2);
                                        dev->if_port = tp->saved_if_port;
                                        break;
                                }
                }

                /* Find the connected MII xcvrs.
                   Doing this in open() would allow detecting external xcvrs
                   later, but takes much time. */
                tulip_find_mii (dev, board_idx);
        }

        /* The Tulip-specific entries in the device structure. */
        dev->open = tulip_open;
        dev->hard_start_xmit = tulip_start_xmit;
        dev->tx_timeout = tulip_tx_timeout;
        dev->watchdog_timeo = TX_TIMEOUT;
        dev->stop = tulip_close;
        dev->get_stats = tulip_get_stats;
        dev->do_ioctl = private_ioctl;
        dev->set_multicast_list = set_rx_mode;

        if (register_netdev(dev))
                goto err_out_free_ring;

        printk(KERN_INFO "%s: %s rev %d at %#3lx,",
               dev->name, tulip_tbl[chip_idx].chip_name, chip_rev, ioaddr);
        pci_set_drvdata(pdev, dev);

        if (eeprom_missing)
                printk(" EEPROM not present,");
        for (i = 0; i < 6; i++)
                printk("%c%2.2X", i ? ':' : ' ', dev->dev_addr[i]);
        printk(", IRQ %d.\n", irq);

        if (tp->chip_id == PNIC2)
                tp->link_change = pnic2_lnk_change;
        else if (tp->flags & HAS_NWAY)
                tp->link_change = t21142_lnk_change;
        else if (tp->flags & HAS_PNICNWAY)
                tp->link_change = pnic_lnk_change;

        /* Reset the xcvr interface and turn on heartbeat. */
        switch (chip_idx) {
        case DC21140:
        case DM910X:
        default:
                if (tp->mtable)
                        outl(tp->mtable->csr12dir | 0x100, ioaddr + CSR12);
                break;
        case DC21142:
                if (tp->mii_cnt  ||  tulip_media_cap[dev->if_port] & MediaIsMII) {
                        outl(csr6_mask_defstate, ioaddr + CSR6);
                        outl(0x0000, ioaddr + CSR13);
                        outl(0x0000, ioaddr + CSR14);
                        outl(csr6_mask_hdcap, ioaddr + CSR6);
                } else
                        t21142_start_nway(dev);
                break;
        case PNIC2:
                /* just do a reset for sanity sake */
                outl(0x0000, ioaddr + CSR13);
                outl(0x0000, ioaddr + CSR14);
                break;
        case LC82C168:
                if ( ! tp->mii_cnt) {
                        tp->nway = 1;
                        tp->nwayset = 0;
                        outl(csr6_ttm | csr6_ca, ioaddr + CSR6);
                        outl(0x30, ioaddr + CSR12);
                        outl(0x0001F078, ioaddr + CSR6);
                        outl(0x0201F078, ioaddr + CSR6); /* Turn on autonegotiation. */
                }
                break;
        case MX98713:
        case COMPEX9881:
                outl(0x00000000, ioaddr + CSR6);
                outl(0x000711C0, ioaddr + CSR14); /* Turn on NWay. */
                outl(0x00000001, ioaddr + CSR13);
                break;
        case MX98715:
        case MX98725:
                outl(0x01a80000, ioaddr + CSR6);
                outl(0xFFFFFFFF, ioaddr + CSR14);
                outl(0x00001000, ioaddr + CSR12);
                break;
        case COMET:
                /* No initialization necessary. */
                break;
        }

        /* put the chip in snooze mode until opened */
        tulip_set_power_state (tp, 0, 1);

        return 0;

err_out_free_ring:
        pci_free_consistent (pdev,
                             sizeof (struct tulip_rx_desc) * RX_RING_SIZE +
                             sizeof (struct tulip_tx_desc) * TX_RING_SIZE,
                             tp->rx_ring, tp->rx_ring_dma);

err_out_mtable:
        if (tp->mtable)
                kfree (tp->mtable);
#ifndef USE_IO_OPS
        iounmap((void *)ioaddr);

err_out_free_res:
#endif
        pci_release_regions (pdev);

err_out_free_netdev:
        kfree (dev);
        return -ENODEV;
}


#ifdef CONFIG_PM

static int tulip_suspend (struct pci_dev *pdev, u32 state)
{
        struct net_device *dev = pci_get_drvdata(pdev);

        if (dev && netif_running (dev) && netif_device_present (dev)) {
                netif_device_detach (dev);
                tulip_down (dev);
                /* pci_power_off(pdev, -1); */
        }
        return 0;
}


static int tulip_resume(struct pci_dev *pdev)
{
        struct net_device *dev = pci_get_drvdata(pdev);

        if (dev && netif_running (dev) && !netif_device_present (dev)) {
#if 1
                pci_enable_device (pdev);
#endif
                /* pci_power_on(pdev); */
                tulip_up (dev);
                netif_device_attach (dev);
        }
        return 0;
}

#endif /* CONFIG_PM */


static void __devexit tulip_remove_one (struct pci_dev *pdev)
{
        struct net_device *dev = pci_get_drvdata (pdev);
        struct tulip_private *tp;

        if (!dev)
                return;

        tp = dev->priv;
        pci_free_consistent (pdev,
                             sizeof (struct tulip_rx_desc) * RX_RING_SIZE +
                             sizeof (struct tulip_tx_desc) * TX_RING_SIZE,
                             tp->rx_ring, tp->rx_ring_dma);
        unregister_netdev (dev);
        if (tp->mtable)
                kfree (tp->mtable);
#ifndef USE_IO_OPS
        iounmap((void *)dev->base_addr);
#endif
        free_netdev (dev);
        pci_release_regions (pdev);
        pci_set_drvdata (pdev, NULL);

        /* pci_power_off (pdev, -1); */
}


static struct pci_driver tulip_driver = {
        .name           = DRV_NAME,
        .id_table       = tulip_pci_tbl,
        .probe          = tulip_init_one,
        .remove         = __devexit_p(tulip_remove_one),
#ifdef CONFIG_PM
        .suspend        = tulip_suspend,
        .resume         = tulip_resume,
#endif /* CONFIG_PM */
};


static int __init tulip_init (void)
{
#ifdef MODULE
        printk (KERN_INFO "%s", version);
#endif

        /* copy module parms into globals */
        tulip_rx_copybreak = rx_copybreak;
        tulip_max_interrupt_work = max_interrupt_work;

        /* probe for and init boards */
        return pci_module_init (&tulip_driver);
}


static void __exit tulip_cleanup (void)
{
        pci_unregister_driver (&tulip_driver);
}


module_init(tulip_init);
module_exit(tulip_cleanup);