/**************************************************************************
 *
 * Copyright  2000-2006 Alacritech, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY ALACRITECH, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ALACRITECH, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation
 * are those of the authors and should not be interpreted as representing
 * official policies, either expressed or implied, of Alacritech, Inc.
 *
 **************************************************************************/

/*
 * FILENAME: slicoss.c
 *
 * The SLICOSS driver for Alacritech's IS-NIC products.
 *
 * This driver is supposed to support:
 *
 *      Mojave cards (single port PCI Gigabit) both copper and fiber
 *      Oasis cards (single and dual port PCI-x Gigabit) copper and fiber
 *      Kalahari cards (dual and quad port PCI-e Gigabit) copper and fiber
 *
 * The driver was actually tested on Oasis and Kalahari cards.
 *
 *
 * NOTE: This is the standard, non-accelerated version of Alacritech's
 *       IS-NIC driver.
 */

#define KLUDGE_FOR_4GB_BOUNDARY         1
#define DEBUG_MICROCODE                 1
#define DBG                             1
#define SLIC_INTERRUPT_PROCESS_LIMIT    1
#define SLIC_OFFLOAD_IP_CHECKSUM        1
#define STATS_TIMER_INTERVAL            2
#define PING_TIMER_INTERVAL             1
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/timer.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/netdevice.h>
#include <linux/crc32.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/kthread.h>
#include <linux/module.h>

#include <linux/firmware.h>
#include <linux/types.h>
#include <linux/dma-mapping.h>
#include <linux/mii.h>
#include <linux/if_vlan.h>
#include <asm/unaligned.h>

#include <linux/ethtool.h>
#include <linux/uaccess.h>
#include "slichw.h"
#include "slic.h"

static uint slic_first_init = 1;
static char *slic_banner = "Alacritech SLIC Technology(tm) Server and Storage Accelerator (Non-Accelerated)";

static char *slic_proc_version = "2.0.351  2006/07/14 12:26:00";

static struct base_driver slic_global = { {}, 0, 0, 0, 1, NULL, NULL };
#define DEFAULT_INTAGG_DELAY 100
static unsigned int rcv_count;

#define DRV_NAME          "slicoss"
#define DRV_VERSION       "2.0.1"
#define DRV_AUTHOR        "Alacritech, Inc. Engineering"
#define DRV_DESCRIPTION   "Alacritech SLIC Techonology(tm) "\
                "Non-Accelerated Driver"
#define DRV_COPYRIGHT     "Copyright  2000-2006 Alacritech, Inc. "\
                "All rights reserved."
#define PFX                DRV_NAME " "

MODULE_AUTHOR(DRV_AUTHOR);
MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_LICENSE("Dual BSD/GPL");

static const struct pci_device_id slic_pci_tbl[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_ALACRITECH, SLIC_1GB_DEVICE_ID) },
        { PCI_DEVICE(PCI_VENDOR_ID_ALACRITECH, SLIC_2GB_DEVICE_ID) },
        { 0 }
};

static struct ethtool_ops slic_ethtool_ops;

MODULE_DEVICE_TABLE(pci, slic_pci_tbl);

static inline void slic_reg32_write(void __iomem *reg, u32 value, bool flush)
{
        writel(value, reg);
        if (flush)
                mb();
}

static inline void slic_reg64_write(struct adapter *adapter, void __iomem *reg,
                                    u32 value, void __iomem *regh, u32 paddrh,
                                    bool flush)
{
        unsigned long flags;

        spin_lock_irqsave(&adapter->bit64reglock, flags);
        writel(paddrh, regh);
        writel(value, reg);
        if (flush)
                mb();
        spin_unlock_irqrestore(&adapter->bit64reglock, flags);
}

static void slic_mcast_set_bit(struct adapter *adapter, char *address)
{
        unsigned char crcpoly;

        /* Get the CRC polynomial for the mac address */
        /*
         * we use bits 1-8 (lsb), bitwise reversed,
         * msb (= lsb bit 0 before bitrev) is automatically discarded
         */
        crcpoly = ether_crc(ETH_ALEN, address) >> 23;

        /*
         * We only have space on the SLIC for 64 entries.  Lop
         * off the top two bits. (2^6 = 64)
         */
        crcpoly &= 0x3F;

        /* OR in the new bit into our 64 bit mask. */
        adapter->mcastmask |= (u64)1 << crcpoly;
}

static void slic_mcast_set_mask(struct adapter *adapter)
{
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;

        if (adapter->macopts & (MAC_ALLMCAST | MAC_PROMISC)) {
                /*
                 * Turn on all multicast addresses. We have to do this for
                 * promiscuous mode as well as ALLMCAST mode.  It saves the
                 * Microcode from having to keep state about the MAC
                 * configuration.
                 */
                slic_reg32_write(&slic_regs->slic_mcastlow, 0xFFFFFFFF, FLUSH);
                slic_reg32_write(&slic_regs->slic_mcasthigh, 0xFFFFFFFF,
                                 FLUSH);
        } else {
                /*
                 * Commit our multicast mast to the SLIC by writing to the
                 * multicast address mask registers
                 */
                slic_reg32_write(&slic_regs->slic_mcastlow,
                        (u32)(adapter->mcastmask & 0xFFFFFFFF), FLUSH);
                slic_reg32_write(&slic_regs->slic_mcasthigh,
                        (u32)((adapter->mcastmask >> 32) & 0xFFFFFFFF), FLUSH);
        }
}

static void slic_timer_ping(ulong dev)
{
        struct adapter *adapter;
        struct sliccard *card;

        adapter = netdev_priv((struct net_device *)dev);
        card = adapter->card;

        adapter->pingtimer.expires = jiffies + (PING_TIMER_INTERVAL * HZ);
        add_timer(&adapter->pingtimer);
}

static void slic_unmap_mmio_space(struct adapter *adapter)
{
        if (adapter->slic_regs)
                iounmap(adapter->slic_regs);
        adapter->slic_regs = NULL;
}

/*
 *  slic_link_config
 *
 *  Write phy control to configure link duplex/speed
 *
 */
static void slic_link_config(struct adapter *adapter,
                      u32 linkspeed, u32 linkduplex)
{
        u32 __iomem *wphy;
        u32 speed;
        u32 duplex;
        u32 phy_config;
        u32 phy_advreg;
        u32 phy_gctlreg;

        if (adapter->state != ADAPT_UP)
                return;

        if (linkspeed > LINK_1000MB)
                linkspeed = LINK_AUTOSPEED;
        if (linkduplex > LINK_AUTOD)
                linkduplex = LINK_AUTOD;

        wphy = &adapter->slic_regs->slic_wphy;

        if ((linkspeed == LINK_AUTOSPEED) || (linkspeed == LINK_1000MB)) {
                if (adapter->flags & ADAPT_FLAGS_FIBERMEDIA) {
                        /*
                         * We've got a fiber gigabit interface, and register
                         *  4 is different in fiber mode than in copper mode
                         */

                        /* advertise FD only @1000 Mb */
                        phy_advreg = (MIICR_REG_4 | (PAR_ADV1000XFD));
                        /* enable PAUSE frames        */
                        phy_advreg |= PAR_ASYMPAUSE_FIBER;
                        slic_reg32_write(wphy, phy_advreg, FLUSH);

                        if (linkspeed == LINK_AUTOSPEED) {
                                /* reset phy, enable auto-neg  */
                                phy_config =
                                    (MIICR_REG_PCR |
                                     (PCR_RESET | PCR_AUTONEG |
                                      PCR_AUTONEG_RST));
                                slic_reg32_write(wphy, phy_config, FLUSH);
                        } else {        /* forced 1000 Mb FD*/
                                /*
                                 * power down phy to break link
                                 * this may not work)
                                 */
                                phy_config = (MIICR_REG_PCR | PCR_POWERDOWN);
                                slic_reg32_write(wphy, phy_config, FLUSH);
                                /*
                                 * wait, Marvell says 1 sec,
                                 * try to get away with 10 ms
                                 */
                                mdelay(10);

                                /*
                                 * disable auto-neg, set speed/duplex,
                                 * soft reset phy, powerup
                                 */
                                phy_config =
                                    (MIICR_REG_PCR |
                                     (PCR_RESET | PCR_SPEED_1000 |
                                      PCR_DUPLEX_FULL));
                                slic_reg32_write(wphy, phy_config, FLUSH);
                        }
                } else {        /* copper gigabit */

                        /*
                         * Auto-Negotiate or 1000 Mb must be auto negotiated
                         * We've got a copper gigabit interface, and
                         * register 4 is different in copper mode than
                         * in fiber mode
                         */
                        if (linkspeed == LINK_AUTOSPEED) {
                                /* advertise 10/100 Mb modes   */
                                phy_advreg =
                                    (MIICR_REG_4 |
                                     (PAR_ADV100FD | PAR_ADV100HD | PAR_ADV10FD
                                      | PAR_ADV10HD));
                        } else {
                        /*
                         * linkspeed == LINK_1000MB -
                         * don't advertise 10/100 Mb modes
                         */
                                phy_advreg = MIICR_REG_4;
                        }
                        /* enable PAUSE frames  */
                        phy_advreg |= PAR_ASYMPAUSE;
                        /* required by the Cicada PHY  */
                        phy_advreg |= PAR_802_3;
                        slic_reg32_write(wphy, phy_advreg, FLUSH);
                        /* advertise FD only @1000 Mb  */
                        phy_gctlreg = (MIICR_REG_9 | (PGC_ADV1000FD));
                        slic_reg32_write(wphy, phy_gctlreg, FLUSH);

                        if (adapter->subsysid != SLIC_1GB_CICADA_SUBSYS_ID) {
                                /*
                                 * if a Marvell PHY
                                 * enable auto crossover
                                 */
                                phy_config =
                                    (MIICR_REG_16 | (MRV_REG16_XOVERON));
                                slic_reg32_write(wphy, phy_config, FLUSH);

                                /* reset phy, enable auto-neg  */
                                phy_config =
                                    (MIICR_REG_PCR |
                                     (PCR_RESET | PCR_AUTONEG |
                                      PCR_AUTONEG_RST));
                                slic_reg32_write(wphy, phy_config, FLUSH);
                        } else {        /* it's a Cicada PHY  */
                                /* enable and restart auto-neg (don't reset)  */
                                phy_config =
                                    (MIICR_REG_PCR |
                                     (PCR_AUTONEG | PCR_AUTONEG_RST));
                                slic_reg32_write(wphy, phy_config, FLUSH);
                        }
                }
        } else {
                /* Forced 10/100  */
                if (linkspeed == LINK_10MB)
                        speed = 0;
                else
                        speed = PCR_SPEED_100;
                if (linkduplex == LINK_HALFD)
                        duplex = 0;
                else
                        duplex = PCR_DUPLEX_FULL;

                if (adapter->subsysid != SLIC_1GB_CICADA_SUBSYS_ID) {
                        /*
                         * if a Marvell PHY
                         * disable auto crossover
                         */
                        phy_config = (MIICR_REG_16 | (MRV_REG16_XOVEROFF));
                        slic_reg32_write(wphy, phy_config, FLUSH);
                }

                /* power down phy to break link (this may not work)  */
                phy_config = (MIICR_REG_PCR | (PCR_POWERDOWN | speed | duplex));
                slic_reg32_write(wphy, phy_config, FLUSH);

                /* wait, Marvell says 1 sec, try to get away with 10 ms */
                mdelay(10);

                if (adapter->subsysid != SLIC_1GB_CICADA_SUBSYS_ID) {
                        /*
                         * if a Marvell PHY
                         * disable auto-neg, set speed,
                         * soft reset phy, powerup
                         */
                        phy_config =
                            (MIICR_REG_PCR | (PCR_RESET | speed | duplex));
                        slic_reg32_write(wphy, phy_config, FLUSH);
                } else {        /* it's a Cicada PHY  */
                        /* disable auto-neg, set speed, powerup  */
                        phy_config = (MIICR_REG_PCR | (speed | duplex));
                        slic_reg32_write(wphy, phy_config, FLUSH);
                }
        }
}

static int slic_card_download_gbrcv(struct adapter *adapter)
{
        const struct firmware *fw;
        const char *file = "";
        int ret;
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;
        u32 codeaddr;
        u32 instruction;
        int index = 0;
        u32 rcvucodelen = 0;

        switch (adapter->devid) {
        case SLIC_2GB_DEVICE_ID:
                file = "slicoss/oasisrcvucode.sys";
                break;
        case SLIC_1GB_DEVICE_ID:
                file = "slicoss/gbrcvucode.sys";
                break;
        default:
                return -ENOENT;
        }

        ret = request_firmware(&fw, file, &adapter->pcidev->dev);
        if (ret) {
                dev_err(&adapter->pcidev->dev,
                        "Failed to load firmware %s\n", file);
                return ret;
        }

        rcvucodelen = *(u32 *)(fw->data + index);
        index += 4;
        switch (adapter->devid) {
        case SLIC_2GB_DEVICE_ID:
                if (rcvucodelen != OasisRcvUCodeLen) {
                        release_firmware(fw);
                        return -EINVAL;
                }
                break;
        case SLIC_1GB_DEVICE_ID:
                if (rcvucodelen != GBRcvUCodeLen) {
                        release_firmware(fw);
                        return -EINVAL;
                }
                break;
        }
        /* start download */
        slic_reg32_write(&slic_regs->slic_rcv_wcs, SLIC_RCVWCS_BEGIN, FLUSH);
        /* download the rcv sequencer ucode */
        for (codeaddr = 0; codeaddr < rcvucodelen; codeaddr++) {
                /* write out instruction address */
                slic_reg32_write(&slic_regs->slic_rcv_wcs, codeaddr, FLUSH);

                instruction = *(u32 *)(fw->data + index);
                index += 4;
                /* write out the instruction data low addr */
                slic_reg32_write(&slic_regs->slic_rcv_wcs, instruction, FLUSH);

                instruction = *(u8 *)(fw->data + index);
                index++;
                /* write out the instruction data high addr */
                slic_reg32_write(&slic_regs->slic_rcv_wcs, (u8)instruction,
                                 FLUSH);
        }

        /* download finished */
        release_firmware(fw);
        slic_reg32_write(&slic_regs->slic_rcv_wcs, SLIC_RCVWCS_FINISH, FLUSH);
        return 0;
}

MODULE_FIRMWARE("slicoss/oasisrcvucode.sys");
MODULE_FIRMWARE("slicoss/gbrcvucode.sys");

static int slic_card_download(struct adapter *adapter)
{
        const struct firmware *fw;
        const char *file = "";
        int ret;
        u32 section;
        int thissectionsize;
        int codeaddr;
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;
        u32 instruction;
        u32 baseaddress;
        u32 i;
        u32 numsects = 0;
        u32 sectsize[3];
        u32 sectstart[3];
        int ucode_start, index = 0;

        switch (adapter->devid) {
        case SLIC_2GB_DEVICE_ID:
                file = "slicoss/oasisdownload.sys";
                break;
        case SLIC_1GB_DEVICE_ID:
                file = "slicoss/gbdownload.sys";
                break;
        default:
                return -ENOENT;
        }
        ret = request_firmware(&fw, file, &adapter->pcidev->dev);
        if (ret) {
                dev_err(&adapter->pcidev->dev,
                        "Failed to load firmware %s\n", file);
                return ret;
        }
        numsects = *(u32 *)(fw->data + index);
        index += 4;
        for (i = 0; i < numsects; i++) {
                sectsize[i] = *(u32 *)(fw->data + index);
                index += 4;
        }
        for (i = 0; i < numsects; i++) {
                sectstart[i] = *(u32 *)(fw->data + index);
                index += 4;
        }
        ucode_start = index;
        instruction = *(u32 *)(fw->data + index);
        index += 4;
        for (section = 0; section < numsects; section++) {
                baseaddress = sectstart[section];
                thissectionsize = sectsize[section] >> 3;

                for (codeaddr = 0; codeaddr < thissectionsize; codeaddr++) {
                        /* Write out instruction address */
                        slic_reg32_write(&slic_regs->slic_wcs,
                                         baseaddress + codeaddr, FLUSH);
                        /* Write out instruction to low addr */
                        slic_reg32_write(&slic_regs->slic_wcs,
                                        instruction, FLUSH);
                        instruction = *(u32 *)(fw->data + index);
                        index += 4;

                        /* Write out instruction to high addr */
                        slic_reg32_write(&slic_regs->slic_wcs,
                                        instruction, FLUSH);
                        instruction = *(u32 *)(fw->data + index);
                        index += 4;
                }
        }
        index = ucode_start;
        for (section = 0; section < numsects; section++) {
                instruction = *(u32 *)(fw->data + index);
                baseaddress = sectstart[section];
                if (baseaddress < 0x8000)
                        continue;
                thissectionsize = sectsize[section] >> 3;

                for (codeaddr = 0; codeaddr < thissectionsize; codeaddr++) {
                        /* Write out instruction address */
                        slic_reg32_write(&slic_regs->slic_wcs,
                                SLIC_WCS_COMPARE | (baseaddress + codeaddr),
                                FLUSH);
                        /* Write out instruction to low addr */
                        slic_reg32_write(&slic_regs->slic_wcs, instruction,
                                         FLUSH);
                        instruction = *(u32 *)(fw->data + index);
                        index += 4;
                        /* Write out instruction to high addr */
                        slic_reg32_write(&slic_regs->slic_wcs, instruction,
                                         FLUSH);
                        instruction = *(u32 *)(fw->data + index);
                        index += 4;

                }
        }
        release_firmware(fw);
        /* Everything OK, kick off the card */
        mdelay(10);
        slic_reg32_write(&slic_regs->slic_wcs, SLIC_WCS_START, FLUSH);

        /*
         * stall for 20 ms, long enough for ucode to init card
         * and reach mainloop
         */
        mdelay(20);

        return 0;
}

MODULE_FIRMWARE("slicoss/oasisdownload.sys");
MODULE_FIRMWARE("slicoss/gbdownload.sys");

static void slic_adapter_set_hwaddr(struct adapter *adapter)
{
        struct sliccard *card = adapter->card;

        if ((adapter->card) && (card->config_set)) {
                memcpy(adapter->macaddr,
                       card->config.MacInfo[adapter->functionnumber].macaddrA,
                       sizeof(struct slic_config_mac));
                if (is_zero_ether_addr(adapter->currmacaddr))
                        memcpy(adapter->currmacaddr, adapter->macaddr,
                               ETH_ALEN);
                if (adapter->netdev)
                        memcpy(adapter->netdev->dev_addr, adapter->currmacaddr,
                               ETH_ALEN);
        }
}

static void slic_intagg_set(struct adapter *adapter, u32 value)
{
        slic_reg32_write(&adapter->slic_regs->slic_intagg, value, FLUSH);
        adapter->card->loadlevel_current = value;
}

static void slic_soft_reset(struct adapter *adapter)
{
        if (adapter->card->state == CARD_UP) {
                slic_reg32_write(&adapter->slic_regs->slic_quiesce, 0, FLUSH);
                mdelay(1);
        }

        slic_reg32_write(&adapter->slic_regs->slic_reset, SLIC_RESET_MAGIC,
                         FLUSH);
        mdelay(1);
}

static void slic_mac_address_config(struct adapter *adapter)
{
        u32 value;
        u32 value2;
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;

        value = ntohl(*(__be32 *)&adapter->currmacaddr[2]);
        slic_reg32_write(&slic_regs->slic_wraddral, value, FLUSH);
        slic_reg32_write(&slic_regs->slic_wraddrbl, value, FLUSH);

        value2 = (u32)((adapter->currmacaddr[0] << 8 |
                             adapter->currmacaddr[1]) & 0xFFFF);

        slic_reg32_write(&slic_regs->slic_wraddrah, value2, FLUSH);
        slic_reg32_write(&slic_regs->slic_wraddrbh, value2, FLUSH);

        /*
         * Write our multicast mask out to the card.  This is done
         * here in addition to the slic_mcast_addr_set routine
         * because ALL_MCAST may have been enabled or disabled
         */
        slic_mcast_set_mask(adapter);
}

static void slic_mac_config(struct adapter *adapter)
{
        u32 value;
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;

        /* Setup GMAC gaps */
        if (adapter->linkspeed == LINK_1000MB) {
                value = ((GMCR_GAPBB_1000 << GMCR_GAPBB_SHIFT) |
                         (GMCR_GAPR1_1000 << GMCR_GAPR1_SHIFT) |
                         (GMCR_GAPR2_1000 << GMCR_GAPR2_SHIFT));
        } else {
                value = ((GMCR_GAPBB_100 << GMCR_GAPBB_SHIFT) |
                         (GMCR_GAPR1_100 << GMCR_GAPR1_SHIFT) |
                         (GMCR_GAPR2_100 << GMCR_GAPR2_SHIFT));
        }

        /* enable GMII */
        if (adapter->linkspeed == LINK_1000MB)
                value |= GMCR_GBIT;

        /* enable fullduplex */
        if ((adapter->linkduplex == LINK_FULLD)
            || (adapter->macopts & MAC_LOOPBACK)) {
                value |= GMCR_FULLD;
        }

        /* write mac config */
        slic_reg32_write(&slic_regs->slic_wmcfg, value, FLUSH);

        /* setup mac addresses */
        slic_mac_address_config(adapter);
}

static void slic_config_set(struct adapter *adapter, bool linkchange)
{
        u32 value;
        u32 RcrReset;
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;

        if (linkchange) {
                /* Setup MAC */
                slic_mac_config(adapter);
                RcrReset = GRCR_RESET;
        } else {
                slic_mac_address_config(adapter);
                RcrReset = 0;
        }

        if (adapter->linkduplex == LINK_FULLD) {
                /* setup xmtcfg */
                value = (GXCR_RESET |   /* Always reset     */
                         GXCR_XMTEN |   /* Enable transmit  */
                         GXCR_PAUSEEN); /* Enable pause     */

                slic_reg32_write(&slic_regs->slic_wxcfg, value, FLUSH);

                /* Setup rcvcfg last */
                value = (RcrReset |     /* Reset, if linkchange */
                         GRCR_CTLEN |   /* Enable CTL frames    */
                         GRCR_ADDRAEN | /* Address A enable     */
                         GRCR_RCVBAD |  /* Rcv bad frames       */
                         (GRCR_HASHSIZE << GRCR_HASHSIZE_SHIFT));
        } else {
                /* setup xmtcfg */
                value = (GXCR_RESET |   /* Always reset     */
                         GXCR_XMTEN);   /* Enable transmit  */

                slic_reg32_write(&slic_regs->slic_wxcfg, value, FLUSH);

                /* Setup rcvcfg last */
                value = (RcrReset |     /* Reset, if linkchange */
                         GRCR_ADDRAEN | /* Address A enable     */
                         GRCR_RCVBAD |  /* Rcv bad frames       */
                         (GRCR_HASHSIZE << GRCR_HASHSIZE_SHIFT));
        }

        if (adapter->state != ADAPT_DOWN) {
                /* Only enable receive if we are restarting or running */
                value |= GRCR_RCVEN;
        }

        if (adapter->macopts & MAC_PROMISC)
                value |= GRCR_RCVALL;

        slic_reg32_write(&slic_regs->slic_wrcfg, value, FLUSH);
}

/*
 *  Turn off RCV and XMT, power down PHY
 */
static void slic_config_clear(struct adapter *adapter)
{
        u32 value;
        u32 phy_config;
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;

        /* Setup xmtcfg */
        value = (GXCR_RESET |   /* Always reset */
                 GXCR_PAUSEEN); /* Enable pause */

        slic_reg32_write(&slic_regs->slic_wxcfg, value, FLUSH);

        value = (GRCR_RESET |   /* Always reset      */
                 GRCR_CTLEN |   /* Enable CTL frames */
                 GRCR_ADDRAEN | /* Address A enable  */
                 (GRCR_HASHSIZE << GRCR_HASHSIZE_SHIFT));

        slic_reg32_write(&slic_regs->slic_wrcfg, value, FLUSH);

        /* power down phy */
        phy_config = (MIICR_REG_PCR | (PCR_POWERDOWN));
        slic_reg32_write(&slic_regs->slic_wphy, phy_config, FLUSH);
}

static bool slic_mac_filter(struct adapter *adapter,
                        struct ether_header *ether_frame)
{
        struct net_device *netdev = adapter->netdev;
        u32 opts = adapter->macopts;

        if (opts & MAC_PROMISC)
                return true;

        if (is_broadcast_ether_addr(ether_frame->ether_dhost)) {
                if (opts & MAC_BCAST) {
                        adapter->rcv_broadcasts++;
                        return true;
                }

                return false;
        }

        if (is_multicast_ether_addr(ether_frame->ether_dhost)) {
                if (opts & MAC_ALLMCAST) {
                        adapter->rcv_multicasts++;
                        netdev->stats.multicast++;
                        return true;
                }
                if (opts & MAC_MCAST) {
                        struct mcast_address *mcaddr = adapter->mcastaddrs;

                        while (mcaddr) {
                                if (ether_addr_equal(mcaddr->address,
                                                     ether_frame->ether_dhost)) {
                                        adapter->rcv_multicasts++;
                                        netdev->stats.multicast++;
                                        return true;
                                }
                                mcaddr = mcaddr->next;
                        }

                        return false;
                }

                return false;
        }
        if (opts & MAC_DIRECTED) {
                adapter->rcv_unicasts++;
                return true;
        }
        return false;
}

static int slic_mac_set_address(struct net_device *dev, void *ptr)
{
        struct adapter *adapter = netdev_priv(dev);
        struct sockaddr *addr = ptr;

        if (netif_running(dev))
                return -EBUSY;
        if (!adapter)
                return -EBUSY;

        if (!is_valid_ether_addr(addr->sa_data))
                return -EINVAL;

        memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
        memcpy(adapter->currmacaddr, addr->sa_data, dev->addr_len);

        slic_config_set(adapter, true);
        return 0;
}

static void slic_timer_load_check(ulong cardaddr)
{
        struct sliccard *card = (struct sliccard *)cardaddr;
        struct adapter *adapter = card->master;
        u32 __iomem *intagg;
        u32 load = card->events;
        u32 level = 0;

        if ((adapter) && (adapter->state == ADAPT_UP) &&
            (card->state == CARD_UP) && (slic_global.dynamic_intagg)) {
                intagg = &adapter->slic_regs->slic_intagg;
                if (adapter->devid == SLIC_1GB_DEVICE_ID) {
                        if (adapter->linkspeed == LINK_1000MB)
                                level = 100;
                        else {
                                if (load > SLIC_LOAD_5)
                                        level = SLIC_INTAGG_5;
                                else if (load > SLIC_LOAD_4)
                                        level = SLIC_INTAGG_4;
                                else if (load > SLIC_LOAD_3)
                                        level = SLIC_INTAGG_3;
                                else if (load > SLIC_LOAD_2)
                                        level = SLIC_INTAGG_2;
                                else if (load > SLIC_LOAD_1)
                                        level = SLIC_INTAGG_1;
                                else
                                        level = SLIC_INTAGG_0;
                        }
                        if (card->loadlevel_current != level) {
                                card->loadlevel_current = level;
                                slic_reg32_write(intagg, level, FLUSH);
                        }
                } else {
                        if (load > SLIC_LOAD_5)
                                level = SLIC_INTAGG_5;
                        else if (load > SLIC_LOAD_4)
                                level = SLIC_INTAGG_4;
                        else if (load > SLIC_LOAD_3)
                                level = SLIC_INTAGG_3;
                        else if (load > SLIC_LOAD_2)
                                level = SLIC_INTAGG_2;
                        else if (load > SLIC_LOAD_1)
                                level = SLIC_INTAGG_1;
                        else
                                level = SLIC_INTAGG_0;
                        if (card->loadlevel_current != level) {
                                card->loadlevel_current = level;
                                slic_reg32_write(intagg, level, FLUSH);
                        }
                }
        }
        card->events = 0;
        card->loadtimer.expires = jiffies + (SLIC_LOADTIMER_PERIOD * HZ);
        add_timer(&card->loadtimer);
}

static int slic_upr_queue_request(struct adapter *adapter,
                           u32 upr_request,
                           u32 upr_data,
                           u32 upr_data_h,
                           u32 upr_buffer, u32 upr_buffer_h)
{
        struct slic_upr *upr;
        struct slic_upr *uprqueue;

        upr = kmalloc(sizeof(*upr), GFP_ATOMIC);
        if (!upr)
                return -ENOMEM;

        upr->adapter = adapter->port;
        upr->upr_request = upr_request;
        upr->upr_data = upr_data;
        upr->upr_buffer = upr_buffer;
        upr->upr_data_h = upr_data_h;
        upr->upr_buffer_h = upr_buffer_h;
        upr->next = NULL;
        if (adapter->upr_list) {
                uprqueue = adapter->upr_list;

                while (uprqueue->next)
                        uprqueue = uprqueue->next;
                uprqueue->next = upr;
        } else {
                adapter->upr_list = upr;
        }
        return 0;
}

static void slic_upr_start(struct adapter *adapter)
{
        struct slic_upr *upr;
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;

        upr = adapter->upr_list;
        if (!upr)
                return;
        if (adapter->upr_busy)
                return;
        adapter->upr_busy = 1;

        switch (upr->upr_request) {
        case SLIC_UPR_STATS:
                if (upr->upr_data_h == 0) {
                        slic_reg32_write(&slic_regs->slic_stats, upr->upr_data,
                                         FLUSH);
                } else {
                        slic_reg64_write(adapter, &slic_regs->slic_stats64,
                                         upr->upr_data,
                                         &slic_regs->slic_addr_upper,
                                         upr->upr_data_h, FLUSH);
                }
                break;

        case SLIC_UPR_RLSR:
                slic_reg64_write(adapter, &slic_regs->slic_rlsr, upr->upr_data,
                                 &slic_regs->slic_addr_upper, upr->upr_data_h,
                                 FLUSH);
                break;

        case SLIC_UPR_RCONFIG:
                slic_reg64_write(adapter, &slic_regs->slic_rconfig,
                                 upr->upr_data, &slic_regs->slic_addr_upper,
                                 upr->upr_data_h, FLUSH);
                break;
        case SLIC_UPR_PING:
                slic_reg32_write(&slic_regs->slic_ping, 1, FLUSH);
                break;
        }
}

static int slic_upr_request(struct adapter *adapter,
                     u32 upr_request,
                     u32 upr_data,
                     u32 upr_data_h,
                     u32 upr_buffer, u32 upr_buffer_h)
{
        unsigned long flags;
        int rc;

        spin_lock_irqsave(&adapter->upr_lock, flags);
        rc = slic_upr_queue_request(adapter,
                                        upr_request,
                                        upr_data,
                                        upr_data_h, upr_buffer, upr_buffer_h);
        if (rc)
                goto err_unlock_irq;

        slic_upr_start(adapter);
err_unlock_irq:
        spin_unlock_irqrestore(&adapter->upr_lock, flags);
        return rc;
}

static void slic_link_upr_complete(struct adapter *adapter, u32 isr)
{
        u32 linkstatus = adapter->pshmem->linkstatus;
        uint linkup;
        unsigned char linkspeed;
        unsigned char linkduplex;

        if ((isr & ISR_UPCERR) || (isr & ISR_UPCBSY)) {
                struct slic_shmem *pshmem;

                pshmem = (struct slic_shmem *)(unsigned long)
                         adapter->phys_shmem;
#if BITS_PER_LONG == 64
                slic_upr_queue_request(adapter,
                                       SLIC_UPR_RLSR,
                                       SLIC_GET_ADDR_LOW(&pshmem->linkstatus),
                                       SLIC_GET_ADDR_HIGH(&pshmem->linkstatus),
                                       0, 0);
#else
                slic_upr_queue_request(adapter,
                                       SLIC_UPR_RLSR,
                                       (u32)&pshmem->linkstatus,
                                       SLIC_GET_ADDR_HIGH(pshmem), 0, 0);
#endif
                return;
        }
        if (adapter->state != ADAPT_UP)
                return;

        linkup = linkstatus & GIG_LINKUP ? LINK_UP : LINK_DOWN;
        if (linkstatus & GIG_SPEED_1000)
                linkspeed = LINK_1000MB;
        else if (linkstatus & GIG_SPEED_100)
                linkspeed = LINK_100MB;
        else
                linkspeed = LINK_10MB;

        if (linkstatus & GIG_FULLDUPLEX)
                linkduplex = LINK_FULLD;

        else
                linkduplex = LINK_HALFD;

        if ((adapter->linkstate == LINK_DOWN) && (linkup == LINK_DOWN))
                return;

        /* link up event, but nothing has changed */
        if ((adapter->linkstate == LINK_UP) &&
            (linkup == LINK_UP) &&
            (adapter->linkspeed == linkspeed) &&
            (adapter->linkduplex == linkduplex))
                return;

        /* link has changed at this point */

        /* link has gone from up to down */
        if (linkup == LINK_DOWN) {
                adapter->linkstate = LINK_DOWN;
                return;
        }

        /* link has gone from down to up */
        adapter->linkspeed = linkspeed;
        adapter->linkduplex = linkduplex;

        if (adapter->linkstate != LINK_UP) {
                /* setup the mac */
                slic_config_set(adapter, true);
                adapter->linkstate = LINK_UP;
                netif_start_queue(adapter->netdev);
        }
}

static void slic_upr_request_complete(struct adapter *adapter, u32 isr)
{
        struct sliccard *card = adapter->card;
        struct slic_upr *upr;
        unsigned long flags;

        spin_lock_irqsave(&adapter->upr_lock, flags);
        upr = adapter->upr_list;
        if (!upr) {
                spin_unlock_irqrestore(&adapter->upr_lock, flags);
                return;
        }
        adapter->upr_list = upr->next;
        upr->next = NULL;
        adapter->upr_busy = 0;
        switch (upr->upr_request) {
        case SLIC_UPR_STATS:
                {
                        struct slic_stats *slicstats =
                            (struct slic_stats *)&adapter->pshmem->inicstats;
                        struct slic_stats *newstats = slicstats;
                        struct slic_stats  *old = &adapter->inicstats_prev;
                        struct slicnet_stats *stst = &adapter->slic_stats;

                        if (isr & ISR_UPCERR) {
                                dev_err(&adapter->netdev->dev,
                                        "SLIC_UPR_STATS command failed isr[%x]\n",
                                        isr);

                                break;
                        }
                        UPDATE_STATS_GB(stst->tcp.xmit_tcp_segs,
                                        newstats->xmit_tcp_segs_gb,
                                        old->xmit_tcp_segs_gb);

                        UPDATE_STATS_GB(stst->tcp.xmit_tcp_bytes,
                                        newstats->xmit_tcp_bytes_gb,
                                        old->xmit_tcp_bytes_gb);

                        UPDATE_STATS_GB(stst->tcp.rcv_tcp_segs,
                                        newstats->rcv_tcp_segs_gb,
                                        old->rcv_tcp_segs_gb);

                        UPDATE_STATS_GB(stst->tcp.rcv_tcp_bytes,
                                        newstats->rcv_tcp_bytes_gb,
                                        old->rcv_tcp_bytes_gb);

                        UPDATE_STATS_GB(stst->iface.xmt_bytes,
                                        newstats->xmit_bytes_gb,
                                        old->xmit_bytes_gb);

                        UPDATE_STATS_GB(stst->iface.xmt_ucast,
                                        newstats->xmit_unicasts_gb,
                                        old->xmit_unicasts_gb);

                        UPDATE_STATS_GB(stst->iface.rcv_bytes,
                                        newstats->rcv_bytes_gb,
                                        old->rcv_bytes_gb);

                        UPDATE_STATS_GB(stst->iface.rcv_ucast,
                                        newstats->rcv_unicasts_gb,
                                        old->rcv_unicasts_gb);

                        UPDATE_STATS_GB(stst->iface.xmt_errors,
                                        newstats->xmit_collisions_gb,
                                        old->xmit_collisions_gb);

                        UPDATE_STATS_GB(stst->iface.xmt_errors,
                                        newstats->xmit_excess_collisions_gb,
                                        old->xmit_excess_collisions_gb);

                        UPDATE_STATS_GB(stst->iface.xmt_errors,
                                        newstats->xmit_other_error_gb,
                                        old->xmit_other_error_gb);

                        UPDATE_STATS_GB(stst->iface.rcv_errors,
                                        newstats->rcv_other_error_gb,
                                        old->rcv_other_error_gb);

                        UPDATE_STATS_GB(stst->iface.rcv_discards,
                                        newstats->rcv_drops_gb,
                                        old->rcv_drops_gb);

                        if (newstats->rcv_drops_gb > old->rcv_drops_gb) {
                                adapter->rcv_drops +=
                                    (newstats->rcv_drops_gb -
                                     old->rcv_drops_gb);
                        }
                        memcpy(old, newstats, sizeof(struct slic_stats));
                        break;
                }
        case SLIC_UPR_RLSR:
                slic_link_upr_complete(adapter, isr);
                break;
        case SLIC_UPR_RCONFIG:
                break;
        case SLIC_UPR_PING:
                card->pingstatus |= (isr & ISR_PINGDSMASK);
                break;
        }
        kfree(upr);
        slic_upr_start(adapter);
        spin_unlock_irqrestore(&adapter->upr_lock, flags);
}

static int slic_config_get(struct adapter *adapter, u32 config, u32 config_h)
{
        return slic_upr_request(adapter, SLIC_UPR_RCONFIG, config, config_h,
                                0, 0);
}

/*
 * Compute a checksum of the EEPROM according to RFC 1071.
 */
static u16 slic_eeprom_cksum(void *eeprom, unsigned int len)
{
        u16 *wp = eeprom;
        u32 checksum = 0;

        while (len > 1) {
                checksum += *(wp++);
                len -= 2;
        }

        if (len > 0)
                checksum += *(u8 *)wp;

        while (checksum >> 16)
                checksum = (checksum & 0xFFFF) + ((checksum >> 16) & 0xFFFF);

        return ~checksum;
}

static void slic_rspqueue_free(struct adapter *adapter)
{
        int i;
        struct slic_rspqueue *rspq = &adapter->rspqueue;

        for (i = 0; i < rspq->num_pages; i++) {
                if (rspq->vaddr[i]) {
                        pci_free_consistent(adapter->pcidev, PAGE_SIZE,
                                            rspq->vaddr[i], rspq->paddr[i]);
                }
                rspq->vaddr[i] = NULL;
                rspq->paddr[i] = 0;
        }
        rspq->offset = 0;
        rspq->pageindex = 0;
        rspq->rspbuf = NULL;
}

static int slic_rspqueue_init(struct adapter *adapter)
{
        int i;
        struct slic_rspqueue *rspq = &adapter->rspqueue;
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;
        u32 paddrh = 0;

        memset(rspq, 0, sizeof(struct slic_rspqueue));

        rspq->num_pages = SLIC_RSPQ_PAGES_GB;

        for (i = 0; i < rspq->num_pages; i++) {
                rspq->vaddr[i] = pci_zalloc_consistent(adapter->pcidev,
                                                       PAGE_SIZE,
                                                       &rspq->paddr[i]);
                if (!rspq->vaddr[i]) {
                        dev_err(&adapter->pcidev->dev,
                                "pci_alloc_consistent failed\n");
                        slic_rspqueue_free(adapter);
                        return -ENOMEM;
                }

                if (paddrh == 0) {
                        slic_reg32_write(&slic_regs->slic_rbar,
                                (rspq->paddr[i] | SLIC_RSPQ_BUFSINPAGE),
                                DONT_FLUSH);
                } else {
                        slic_reg64_write(adapter, &slic_regs->slic_rbar64,
                                (rspq->paddr[i] | SLIC_RSPQ_BUFSINPAGE),
                                &slic_regs->slic_addr_upper,
                                paddrh, DONT_FLUSH);
                }
        }
        rspq->offset = 0;
        rspq->pageindex = 0;
        rspq->rspbuf = (struct slic_rspbuf *)rspq->vaddr[0];
        return 0;
}

static struct slic_rspbuf *slic_rspqueue_getnext(struct adapter *adapter)
{
        struct slic_rspqueue *rspq = &adapter->rspqueue;
        struct slic_rspbuf *buf;

        if (!(rspq->rspbuf->status))
                return NULL;

        buf = rspq->rspbuf;
        if (++rspq->offset < SLIC_RSPQ_BUFSINPAGE) {
                rspq->rspbuf++;
        } else {
                slic_reg64_write(adapter, &adapter->slic_regs->slic_rbar64,
                        (rspq->paddr[rspq->pageindex] | SLIC_RSPQ_BUFSINPAGE),
                        &adapter->slic_regs->slic_addr_upper, 0, DONT_FLUSH);
                rspq->pageindex = (rspq->pageindex + 1) % rspq->num_pages;
                rspq->offset = 0;
                rspq->rspbuf = (struct slic_rspbuf *)
                                                rspq->vaddr[rspq->pageindex];
        }

        return buf;
}

static void slic_cmdqmem_free(struct adapter *adapter)
{
        struct slic_cmdqmem *cmdqmem = &adapter->cmdqmem;
        int i;

        for (i = 0; i < SLIC_CMDQ_MAXPAGES; i++) {
                if (cmdqmem->pages[i]) {
                        pci_free_consistent(adapter->pcidev,
                                            PAGE_SIZE,
                                            (void *)cmdqmem->pages[i],
                                            cmdqmem->dma_pages[i]);
                }
        }
        memset(cmdqmem, 0, sizeof(struct slic_cmdqmem));
}

static u32 *slic_cmdqmem_addpage(struct adapter *adapter)
{
        struct slic_cmdqmem *cmdqmem = &adapter->cmdqmem;
        u32 *pageaddr;

        if (cmdqmem->pagecnt >= SLIC_CMDQ_MAXPAGES)
                return NULL;
        pageaddr = pci_alloc_consistent(adapter->pcidev,
                                        PAGE_SIZE,
                                        &cmdqmem->dma_pages[cmdqmem->pagecnt]);
        if (!pageaddr)
                return NULL;

        cmdqmem->pages[cmdqmem->pagecnt] = pageaddr;
        cmdqmem->pagecnt++;
        return pageaddr;
}

static void slic_cmdq_free(struct adapter *adapter)
{
        struct slic_hostcmd *cmd;

        cmd = adapter->cmdq_all.head;
        while (cmd) {
                if (cmd->busy) {
                        struct sk_buff *tempskb;

                        tempskb = cmd->skb;
                        if (tempskb) {
                                cmd->skb = NULL;
                                dev_kfree_skb_irq(tempskb);
                        }
                }
                cmd = cmd->next_all;
        }
        memset(&adapter->cmdq_all, 0, sizeof(struct slic_cmdqueue));
        memset(&adapter->cmdq_free, 0, sizeof(struct slic_cmdqueue));
        memset(&adapter->cmdq_done, 0, sizeof(struct slic_cmdqueue));
        slic_cmdqmem_free(adapter);
}

static void slic_cmdq_addcmdpage(struct adapter *adapter, u32 *page)
{
        struct slic_hostcmd *cmd;
        struct slic_hostcmd *prev;
        struct slic_hostcmd *tail;
        struct slic_cmdqueue *cmdq;
        int cmdcnt;
        void *cmdaddr;
        ulong phys_addr;
        u32 phys_addrl;
        u32 phys_addrh;
        struct slic_handle *pslic_handle;
        unsigned long flags;

        cmdaddr = page;
        cmd = cmdaddr;
        cmdcnt = 0;

        phys_addr = virt_to_bus((void *)page);
        phys_addrl = SLIC_GET_ADDR_LOW(phys_addr);
        phys_addrh = SLIC_GET_ADDR_HIGH(phys_addr);

        prev = NULL;
        tail = cmd;
        while ((cmdcnt < SLIC_CMDQ_CMDSINPAGE) &&
               (adapter->slic_handle_ix < 256)) {
                /* Allocate and initialize a SLIC_HANDLE for this command */
                spin_lock_irqsave(&adapter->handle_lock, flags);
                pslic_handle  =  adapter->pfree_slic_handles;
                adapter->pfree_slic_handles = pslic_handle->next;
                spin_unlock_irqrestore(&adapter->handle_lock, flags);
                pslic_handle->type = SLIC_HANDLE_CMD;
                pslic_handle->address = (void *)cmd;
                pslic_handle->offset = (ushort)adapter->slic_handle_ix++;
                pslic_handle->other_handle = NULL;
                pslic_handle->next = NULL;

                cmd->pslic_handle = pslic_handle;
                cmd->cmd64.hosthandle = pslic_handle->token.handle_token;
                cmd->busy = false;
                cmd->paddrl = phys_addrl;
                cmd->paddrh = phys_addrh;
                cmd->next_all = prev;
                cmd->next = prev;
                prev = cmd;
                phys_addrl += SLIC_HOSTCMD_SIZE;
                cmdaddr += SLIC_HOSTCMD_SIZE;

                cmd = cmdaddr;
                cmdcnt++;
        }

        cmdq = &adapter->cmdq_all;
        cmdq->count += cmdcnt;  /*  SLIC_CMDQ_CMDSINPAGE;   mooktodo */
        tail->next_all = cmdq->head;
        cmdq->head = prev;
        cmdq = &adapter->cmdq_free;
        spin_lock_irqsave(&cmdq->lock, flags);
        cmdq->count += cmdcnt;  /*  SLIC_CMDQ_CMDSINPAGE;   mooktodo */
        tail->next = cmdq->head;
        cmdq->head = prev;
        spin_unlock_irqrestore(&cmdq->lock, flags);
}

static int slic_cmdq_init(struct adapter *adapter)
{
        int i;
        u32 *pageaddr;

        memset(&adapter->cmdq_all, 0, sizeof(struct slic_cmdqueue));
        memset(&adapter->cmdq_free, 0, sizeof(struct slic_cmdqueue));
        memset(&adapter->cmdq_done, 0, sizeof(struct slic_cmdqueue));
        spin_lock_init(&adapter->cmdq_all.lock);
        spin_lock_init(&adapter->cmdq_free.lock);
        spin_lock_init(&adapter->cmdq_done.lock);
        memset(&adapter->cmdqmem, 0, sizeof(struct slic_cmdqmem));
        adapter->slic_handle_ix = 1;
        for (i = 0; i < SLIC_CMDQ_INITPAGES; i++) {
                pageaddr = slic_cmdqmem_addpage(adapter);
                if (!pageaddr) {
                        slic_cmdq_free(adapter);
                        return -ENOMEM;
                }
                slic_cmdq_addcmdpage(adapter, pageaddr);
        }
        adapter->slic_handle_ix = 1;

        return 0;
}

static void slic_cmdq_reset(struct adapter *adapter)
{
        struct slic_hostcmd *hcmd;
        struct sk_buff *skb;
        u32 outstanding;
        unsigned long flags;

        spin_lock_irqsave(&adapter->cmdq_free.lock, flags);
        spin_lock(&adapter->cmdq_done.lock);
        outstanding = adapter->cmdq_all.count - adapter->cmdq_done.count;
        outstanding -= adapter->cmdq_free.count;
        hcmd = adapter->cmdq_all.head;
        while (hcmd) {
                if (hcmd->busy) {
                        skb = hcmd->skb;
                        hcmd->busy = 0;
                        hcmd->skb = NULL;
                        dev_kfree_skb_irq(skb);
                }
                hcmd = hcmd->next_all;
        }
        adapter->cmdq_free.count = 0;
        adapter->cmdq_free.head = NULL;
        adapter->cmdq_free.tail = NULL;
        adapter->cmdq_done.count = 0;
        adapter->cmdq_done.head = NULL;
        adapter->cmdq_done.tail = NULL;
        adapter->cmdq_free.head = adapter->cmdq_all.head;
        hcmd = adapter->cmdq_all.head;
        while (hcmd) {
                adapter->cmdq_free.count++;
                hcmd->next = hcmd->next_all;
                hcmd = hcmd->next_all;
        }
        if (adapter->cmdq_free.count != adapter->cmdq_all.count) {
                dev_err(&adapter->netdev->dev,
                        "free_count %d != all count %d\n",
                        adapter->cmdq_free.count, adapter->cmdq_all.count);
        }
        spin_unlock(&adapter->cmdq_done.lock);
        spin_unlock_irqrestore(&adapter->cmdq_free.lock, flags);
}

static void slic_cmdq_getdone(struct adapter *adapter)
{
        struct slic_cmdqueue *done_cmdq = &adapter->cmdq_done;
        struct slic_cmdqueue *free_cmdq = &adapter->cmdq_free;
        unsigned long flags;

        spin_lock_irqsave(&done_cmdq->lock, flags);

        free_cmdq->head = done_cmdq->head;
        free_cmdq->count = done_cmdq->count;
        done_cmdq->head = NULL;
        done_cmdq->tail = NULL;
        done_cmdq->count = 0;
        spin_unlock_irqrestore(&done_cmdq->lock, flags);
}

static struct slic_hostcmd *slic_cmdq_getfree(struct adapter *adapter)
{
        struct slic_cmdqueue *cmdq = &adapter->cmdq_free;
        struct slic_hostcmd *cmd = NULL;
        unsigned long flags;

lock_and_retry:
        spin_lock_irqsave(&cmdq->lock, flags);
retry:
        cmd = cmdq->head;
        if (cmd) {
                cmdq->head = cmd->next;
                cmdq->count--;
                spin_unlock_irqrestore(&cmdq->lock, flags);
        } else {
                slic_cmdq_getdone(adapter);
                cmd = cmdq->head;
                if (cmd) {
                        goto retry;
                } else {
                        u32 *pageaddr;

                        spin_unlock_irqrestore(&cmdq->lock, flags);
                        pageaddr = slic_cmdqmem_addpage(adapter);
                        if (pageaddr) {
                                slic_cmdq_addcmdpage(adapter, pageaddr);
                                goto lock_and_retry;
                        }
                }
        }
        return cmd;
}

static void slic_cmdq_putdone_irq(struct adapter *adapter,
                                struct slic_hostcmd *cmd)
{
        struct slic_cmdqueue *cmdq = &adapter->cmdq_done;

        spin_lock(&cmdq->lock);
        cmd->busy = 0;
        cmd->next = cmdq->head;
        cmdq->head = cmd;
        cmdq->count++;
        if ((adapter->xmitq_full) && (cmdq->count > 10))
                netif_wake_queue(adapter->netdev);
        spin_unlock(&cmdq->lock);
}

static int slic_rcvqueue_fill(struct adapter *adapter)
{
        void *paddr;
        u32 paddrl;
        u32 paddrh;
        struct slic_rcvqueue *rcvq = &adapter->rcvqueue;
        int i = 0;
        struct device *dev = &adapter->netdev->dev;

        while (i < SLIC_RCVQ_FILLENTRIES) {
                struct slic_rcvbuf *rcvbuf;
                struct sk_buff *skb;
#ifdef KLUDGE_FOR_4GB_BOUNDARY
retry_rcvqfill:
#endif
                skb = alloc_skb(SLIC_RCVQ_RCVBUFSIZE, GFP_ATOMIC);
                if (skb) {
                        paddr = (void *)(unsigned long)
                                pci_map_single(adapter->pcidev,
                                               skb->data,
                                               SLIC_RCVQ_RCVBUFSIZE,
                                               PCI_DMA_FROMDEVICE);
                        paddrl = SLIC_GET_ADDR_LOW(paddr);
                        paddrh = SLIC_GET_ADDR_HIGH(paddr);

                        skb->len = SLIC_RCVBUF_HEADSIZE;
                        rcvbuf = (struct slic_rcvbuf *)skb->head;
                        rcvbuf->status = 0;
                        skb->next = NULL;
#ifdef KLUDGE_FOR_4GB_BOUNDARY
                        if (paddrl == 0) {
                                dev_err(dev, "%s: LOW 32bits PHYSICAL ADDRESS == 0\n",
                                        __func__);
                                dev_err(dev, "skb[%p] PROBLEM\n", skb);
                                dev_err(dev, "         skbdata[%p]\n",
                                                skb->data);
                                dev_err(dev, "         skblen[%x]\n", skb->len);
                                dev_err(dev, "         paddr[%p]\n", paddr);
                                dev_err(dev, "         paddrl[%x]\n", paddrl);
                                dev_err(dev, "         paddrh[%x]\n", paddrh);
                                dev_err(dev, "         rcvq->head[%p]\n",
                                                rcvq->head);
                                dev_err(dev, "         rcvq->tail[%p]\n",
                                                rcvq->tail);
                                dev_err(dev, "         rcvq->count[%x]\n",
                                                rcvq->count);
                                dev_err(dev, "SKIP THIS SKB!!!!!!!!\n");
                                goto retry_rcvqfill;
                        }
#else
                        if (paddrl == 0) {
                                dev_err(dev, "%s: LOW 32bits PHYSICAL ADDRESS == 0\n",
                                        __func__);
                                dev_err(dev, "skb[%p] PROBLEM\n", skb);
                                dev_err(dev, "         skbdata[%p]\n",
                                                skb->data);
                                dev_err(dev, "         skblen[%x]\n", skb->len);
                                dev_err(dev, "         paddr[%p]\n", paddr);
                                dev_err(dev, "         paddrl[%x]\n", paddrl);
                                dev_err(dev, "         paddrh[%x]\n", paddrh);
                                dev_err(dev, "         rcvq->head[%p]\n",
                                                rcvq->head);
                                dev_err(dev, "         rcvq->tail[%p]\n",
                                                rcvq->tail);
                                dev_err(dev, "         rcvq->count[%x]\n",
                                                rcvq->count);
                                dev_err(dev, "GIVE TO CARD ANYWAY\n");
                        }
#endif
                        if (paddrh == 0) {
                                slic_reg32_write(&adapter->slic_regs->slic_hbar,
                                                 (u32)paddrl, DONT_FLUSH);
                        } else {
                                slic_reg64_write(adapter,
                                        &adapter->slic_regs->slic_hbar64,
                                        paddrl,
                                        &adapter->slic_regs->slic_addr_upper,
                                        paddrh, DONT_FLUSH);
                        }
                        if (rcvq->head)
                                rcvq->tail->next = skb;
                        else
                                rcvq->head = skb;
                        rcvq->tail = skb;
                        rcvq->count++;
                        i++;
                } else {
                        dev_err(&adapter->netdev->dev,
                                "slic_rcvqueue_fill could only get [%d] skbuffs\n",
                                i);
                        break;
                }
        }
        return i;
}

static void slic_rcvqueue_free(struct adapter *adapter)
{
        struct slic_rcvqueue *rcvq = &adapter->rcvqueue;
        struct sk_buff *skb;

        while (rcvq->head) {
                skb = rcvq->head;
                rcvq->head = rcvq->head->next;
                dev_kfree_skb(skb);
        }
        rcvq->tail = NULL;
        rcvq->head = NULL;
        rcvq->count = 0;
}

static int slic_rcvqueue_init(struct adapter *adapter)
{
        int i, count;
        struct slic_rcvqueue *rcvq = &adapter->rcvqueue;

        rcvq->tail = NULL;
        rcvq->head = NULL;
        rcvq->size = SLIC_RCVQ_ENTRIES;
        rcvq->errors = 0;
        rcvq->count = 0;
        i = SLIC_RCVQ_ENTRIES / SLIC_RCVQ_FILLENTRIES;
        count = 0;
        while (i) {
                count += slic_rcvqueue_fill(adapter);
                i--;
        }
        if (rcvq->count < SLIC_RCVQ_MINENTRIES) {
                slic_rcvqueue_free(adapter);
                return -ENOMEM;
        }
        return 0;
}

static struct sk_buff *slic_rcvqueue_getnext(struct adapter *adapter)
{
        struct slic_rcvqueue *rcvq = &adapter->rcvqueue;
        struct sk_buff *skb;
        struct slic_rcvbuf *rcvbuf;
        int count;

        if (rcvq->count) {
                skb = rcvq->head;
                rcvbuf = (struct slic_rcvbuf *)skb->head;

                if (rcvbuf->status & IRHDDR_SVALID) {
                        rcvq->head = rcvq->head->next;
                        skb->next = NULL;
                        rcvq->count--;
                } else {
                        skb = NULL;
                }
        } else {
                dev_err(&adapter->netdev->dev,
                        "RcvQ Empty!! rcvq[%p] count[%x]\n", rcvq, rcvq->count);
                skb = NULL;
        }
        while (rcvq->count < SLIC_RCVQ_FILLTHRESH) {
                count = slic_rcvqueue_fill(adapter);
                if (!count)
                        break;
        }
        if (skb)
                rcvq->errors = 0;
        return skb;
}

static u32 slic_rcvqueue_reinsert(struct adapter *adapter, struct sk_buff *skb)
{
        struct slic_rcvqueue *rcvq = &adapter->rcvqueue;
        void *paddr;
        u32 paddrl;
        u32 paddrh;
        struct slic_rcvbuf *rcvbuf = (struct slic_rcvbuf *)skb->head;
        struct device *dev;

        paddr = (void *)(unsigned long)
                pci_map_single(adapter->pcidev, skb->head,
                               SLIC_RCVQ_RCVBUFSIZE, PCI_DMA_FROMDEVICE);
        rcvbuf->status = 0;
        skb->next = NULL;

        paddrl = SLIC_GET_ADDR_LOW(paddr);
        paddrh = SLIC_GET_ADDR_HIGH(paddr);

        if (paddrl == 0) {
                dev = &adapter->netdev->dev;
                dev_err(dev, "%s: LOW 32bits PHYSICAL ADDRESS == 0\n",
                        __func__);
                dev_err(dev, "skb[%p] PROBLEM\n", skb);
                dev_err(dev, "         skbdata[%p]\n", skb->data);
                dev_err(dev, "         skblen[%x]\n", skb->len);
                dev_err(dev, "         paddr[%p]\n", paddr);
                dev_err(dev, "         paddrl[%x]\n", paddrl);
                dev_err(dev, "         paddrh[%x]\n", paddrh);
                dev_err(dev, "         rcvq->head[%p]\n", rcvq->head);
                dev_err(dev, "         rcvq->tail[%p]\n", rcvq->tail);
                dev_err(dev, "         rcvq->count[%x]\n", rcvq->count);
        }
        if (paddrh == 0) {
                slic_reg32_write(&adapter->slic_regs->slic_hbar, (u32)paddrl,
                                 DONT_FLUSH);
        } else {
                slic_reg64_write(adapter, &adapter->slic_regs->slic_hbar64,
                                 paddrl, &adapter->slic_regs->slic_addr_upper,
                                 paddrh, DONT_FLUSH);
        }
        if (rcvq->head)
                rcvq->tail->next = skb;
        else
                rcvq->head = skb;
        rcvq->tail = skb;
        rcvq->count++;
        return rcvq->count;
}

/*
 * slic_link_event_handler -
 *
 * Initiate a link configuration sequence.  The link configuration begins
 * by issuing a READ_LINK_STATUS command to the Utility Processor on the
 * SLIC.  Since the command finishes asynchronously, the slic_upr_comlete
 * routine will follow it up witha UP configuration write command, which
 * will also complete asynchronously.
 *
 */
static int slic_link_event_handler(struct adapter *adapter)
{
        int status;
        struct slic_shmem *pshmem;

        if (adapter->state != ADAPT_UP) {
                /* Adapter is not operational.  Ignore.  */
                return -ENODEV;
        }

        pshmem = (struct slic_shmem *)(unsigned long)adapter->phys_shmem;

#if BITS_PER_LONG == 64
        status = slic_upr_request(adapter,
                                  SLIC_UPR_RLSR,
                                  SLIC_GET_ADDR_LOW(&pshmem->linkstatus),
                                  SLIC_GET_ADDR_HIGH(&pshmem->linkstatus),
                                  0, 0);
#else
        status = slic_upr_request(adapter, SLIC_UPR_RLSR,
                (u32)&pshmem->linkstatus,       /* no 4GB wrap guaranteed */
                                  0, 0, 0);
#endif
        return status;
}

static void slic_init_cleanup(struct adapter *adapter)
{
        if (adapter->intrregistered) {
                adapter->intrregistered = 0;
                free_irq(adapter->netdev->irq, adapter->netdev);
        }
        if (adapter->pshmem) {
                pci_free_consistent(adapter->pcidev,
                                    sizeof(struct slic_shmem),
                                    adapter->pshmem, adapter->phys_shmem);
                adapter->pshmem = NULL;
                adapter->phys_shmem = (dma_addr_t)(unsigned long)NULL;
        }

        if (adapter->pingtimerset) {
                adapter->pingtimerset = 0;
                del_timer(&adapter->pingtimer);
        }

        slic_rspqueue_free(adapter);
        slic_cmdq_free(adapter);
        slic_rcvqueue_free(adapter);
}

/*
 *  Allocate a mcast_address structure to hold the multicast address.
 *  Link it in.
 */
static int slic_mcast_add_list(struct adapter *adapter, char *address)
{
        struct mcast_address *mcaddr, *mlist;

        /* Check to see if it already exists */
        mlist = adapter->mcastaddrs;
        while (mlist) {
                if (ether_addr_equal(mlist->address, address))
                        return 0;
                mlist = mlist->next;
        }

        /* Doesn't already exist.  Allocate a structure to hold it */
        mcaddr = kmalloc(sizeof(*mcaddr), GFP_ATOMIC);
        if (!mcaddr)
                return 1;

        ether_addr_copy(mcaddr->address, address);

        mcaddr->next = adapter->mcastaddrs;
        adapter->mcastaddrs = mcaddr;

        return 0;
}

static void slic_mcast_set_list(struct net_device *dev)
{
        struct adapter *adapter = netdev_priv(dev);
        int status = 0;
        char *addresses;
        struct netdev_hw_addr *ha;

        netdev_for_each_mc_addr(ha, dev) {
                addresses = (char *)&ha->addr;
                status = slic_mcast_add_list(adapter, addresses);
                if (status != 0)
                        break;
                slic_mcast_set_bit(adapter, addresses);
        }

        if (adapter->devflags_prev != dev->flags) {
                adapter->macopts = MAC_DIRECTED;
                if (dev->flags) {
                        if (dev->flags & IFF_BROADCAST)
                                adapter->macopts |= MAC_BCAST;
                        if (dev->flags & IFF_PROMISC)
                                adapter->macopts |= MAC_PROMISC;
                        if (dev->flags & IFF_ALLMULTI)
                                adapter->macopts |= MAC_ALLMCAST;
                        if (dev->flags & IFF_MULTICAST)
                                adapter->macopts |= MAC_MCAST;
                }
                adapter->devflags_prev = dev->flags;
                slic_config_set(adapter, true);
        } else {
                if (status == 0)
                        slic_mcast_set_mask(adapter);
        }
}

#define  XMIT_FAIL_LINK_STATE               1
#define  XMIT_FAIL_ZERO_LENGTH              2
#define  XMIT_FAIL_HOSTCMD_FAIL             3

static void slic_xmit_build_request(struct adapter *adapter,
                             struct slic_hostcmd *hcmd, struct sk_buff *skb)
{
        struct slic_host64_cmd *ihcmd;
        ulong phys_addr;

        ihcmd = &hcmd->cmd64;

        ihcmd->flags = adapter->port << IHFLG_IFSHFT;
        ihcmd->command = IHCMD_XMT_REQ;
        ihcmd->u.slic_buffers.totlen = skb->len;
        phys_addr = pci_map_single(adapter->pcidev, skb->data, skb->len,
                        PCI_DMA_TODEVICE);
        if (pci_dma_mapping_error(adapter->pcidev, phys_addr)) {
                kfree_skb(skb);
                dev_err(&adapter->pcidev->dev, "DMA mapping error\n");
                return;
        }
        ihcmd->u.slic_buffers.bufs[0].paddrl = SLIC_GET_ADDR_LOW(phys_addr);
        ihcmd->u.slic_buffers.bufs[0].paddrh = SLIC_GET_ADDR_HIGH(phys_addr);
        ihcmd->u.slic_buffers.bufs[0].length = skb->len;
#if BITS_PER_LONG == 64
        hcmd->cmdsize = (u32)((((u64)&ihcmd->u.slic_buffers.bufs[1] -
                                     (u64)hcmd) + 31) >> 5);
#else
        hcmd->cmdsize = (((u32)&ihcmd->u.slic_buffers.bufs[1] -
                                       (u32)hcmd) + 31) >> 5;
#endif
}

static void slic_xmit_fail(struct adapter *adapter,
                    struct sk_buff *skb,
                    void *cmd, u32 skbtype, u32 status)
{
        if (adapter->xmitq_full)
                netif_stop_queue(adapter->netdev);
        if ((!cmd) && (status <= XMIT_FAIL_HOSTCMD_FAIL)) {
                switch (status) {
                case XMIT_FAIL_LINK_STATE:
                        dev_err(&adapter->netdev->dev,
                                "reject xmit skb[%p: %x] linkstate[%s] adapter[%s:%d] card[%s:%d]\n",
                                skb, skb->pkt_type,
                                SLIC_LINKSTATE(adapter->linkstate),
                                SLIC_ADAPTER_STATE(adapter->state),
                                adapter->state,
                                SLIC_CARD_STATE(adapter->card->state),
                                adapter->card->state);
                        break;
                case XMIT_FAIL_ZERO_LENGTH:
                        dev_err(&adapter->netdev->dev,
                                "xmit_start skb->len == 0 skb[%p] type[%x]\n",
                                skb, skb->pkt_type);
                        break;
                case XMIT_FAIL_HOSTCMD_FAIL:
                        dev_err(&adapter->netdev->dev,
                                "xmit_start skb[%p] type[%x] No host commands available\n",
                                skb, skb->pkt_type);
                        break;
                }
        }
        dev_kfree_skb(skb);
        adapter->netdev->stats.tx_dropped++;
}

static void slic_rcv_handle_error(struct adapter *adapter,
                                        struct slic_rcvbuf *rcvbuf)
{
        struct slic_hddr_wds *hdr = (struct slic_hddr_wds *)rcvbuf->data;
        struct net_device *netdev = adapter->netdev;

        if (adapter->devid != SLIC_1GB_DEVICE_ID) {
                if (hdr->frame_status14 & VRHSTAT_802OE)
                        adapter->if_events.oflow802++;
                if (hdr->frame_status14 & VRHSTAT_TPOFLO)
                        adapter->if_events.Tprtoflow++;
                if (hdr->frame_status_b14 & VRHSTATB_802UE)
                        adapter->if_events.uflow802++;
                if (hdr->frame_status_b14 & VRHSTATB_RCVE) {
                        adapter->if_events.rcvearly++;
                        netdev->stats.rx_fifo_errors++;
                }
                if (hdr->frame_status_b14 & VRHSTATB_BUFF) {
                        adapter->if_events.Bufov++;
                        netdev->stats.rx_over_errors++;
                }
                if (hdr->frame_status_b14 & VRHSTATB_CARRE) {
                        adapter->if_events.Carre++;
                        netdev->stats.tx_carrier_errors++;
                }
                if (hdr->frame_status_b14 & VRHSTATB_LONGE)
                        adapter->if_events.Longe++;
                if (hdr->frame_status_b14 & VRHSTATB_PREA)
                        adapter->if_events.Invp++;
                if (hdr->frame_status_b14 & VRHSTATB_CRC) {
                        adapter->if_events.Crc++;
                        netdev->stats.rx_crc_errors++;
                }
                if (hdr->frame_status_b14 & VRHSTATB_DRBL)
                        adapter->if_events.Drbl++;
                if (hdr->frame_status_b14 & VRHSTATB_CODE)
                        adapter->if_events.Code++;
                if (hdr->frame_status_b14 & VRHSTATB_TPCSUM)
                        adapter->if_events.TpCsum++;
                if (hdr->frame_status_b14 & VRHSTATB_TPHLEN)
                        adapter->if_events.TpHlen++;
                if (hdr->frame_status_b14 & VRHSTATB_IPCSUM)
                        adapter->if_events.IpCsum++;
                if (hdr->frame_status_b14 & VRHSTATB_IPLERR)
                        adapter->if_events.IpLen++;
                if (hdr->frame_status_b14 & VRHSTATB_IPHERR)
                        adapter->if_events.IpHlen++;
        } else {
                if (hdr->frame_statusGB & VGBSTAT_XPERR) {
                        u32 xerr = hdr->frame_statusGB >> VGBSTAT_XERRSHFT;

                        if (xerr == VGBSTAT_XCSERR)
                                adapter->if_events.TpCsum++;
                        if (xerr == VGBSTAT_XUFLOW)
                                adapter->if_events.Tprtoflow++;
                        if (xerr == VGBSTAT_XHLEN)
                                adapter->if_events.TpHlen++;
                }
                if (hdr->frame_statusGB & VGBSTAT_NETERR) {
                        u32 nerr =
                            (hdr->
                             frame_statusGB >> VGBSTAT_NERRSHFT) &
                            VGBSTAT_NERRMSK;
                        if (nerr == VGBSTAT_NCSERR)
                                adapter->if_events.IpCsum++;
                        if (nerr == VGBSTAT_NUFLOW)
                                adapter->if_events.IpLen++;
                        if (nerr == VGBSTAT_NHLEN)
                                adapter->if_events.IpHlen++;
                }
                if (hdr->frame_statusGB & VGBSTAT_LNKERR) {
                        u32 lerr = hdr->frame_statusGB & VGBSTAT_LERRMSK;

                        if (lerr == VGBSTAT_LDEARLY)
                                adapter->if_events.rcvearly++;
                        if (lerr == VGBSTAT_LBOFLO)
                                adapter->if_events.Bufov++;
                        if (lerr == VGBSTAT_LCODERR)
                                adapter->if_events.Code++;
                        if (lerr == VGBSTAT_LDBLNBL)
                                adapter->if_events.Drbl++;
                        if (lerr == VGBSTAT_LCRCERR)
                                adapter->if_events.Crc++;
                        if (lerr == VGBSTAT_LOFLO)
                                adapter->if_events.oflow802++;
                        if (lerr == VGBSTAT_LUFLO)
                                adapter->if_events.uflow802++;
                }
        }
}

#define TCP_OFFLOAD_FRAME_PUSHFLAG  0x10000000
#define M_FAST_PATH                 0x0040

static void slic_rcv_handler(struct adapter *adapter)
{
        struct net_device *netdev = adapter->netdev;
        struct sk_buff *skb;
        struct slic_rcvbuf *rcvbuf;
        u32 frames = 0;

        while ((skb = slic_rcvqueue_getnext(adapter))) {
                u32 rx_bytes;

                rcvbuf = (struct slic_rcvbuf *)skb->head;
                adapter->card->events++;
                if (rcvbuf->status & IRHDDR_ERR) {
                        adapter->rx_errors++;
                        slic_rcv_handle_error(adapter, rcvbuf);
                        slic_rcvqueue_reinsert(adapter, skb);
                        continue;
                }

                if (!slic_mac_filter(adapter, (struct ether_header *)
                                        rcvbuf->data)) {
                        slic_rcvqueue_reinsert(adapter, skb);
                        continue;
                }
                skb_pull(skb, SLIC_RCVBUF_HEADSIZE);
                rx_bytes = (rcvbuf->length & IRHDDR_FLEN_MSK);
                skb_put(skb, rx_bytes);
                netdev->stats.rx_packets++;
                netdev->stats.rx_bytes += rx_bytes;
#if SLIC_OFFLOAD_IP_CHECKSUM
                skb->ip_summed = CHECKSUM_UNNECESSARY;
#endif

                skb->dev = adapter->netdev;
                skb->protocol = eth_type_trans(skb, skb->dev);
                netif_rx(skb);

                ++frames;
#if SLIC_INTERRUPT_PROCESS_LIMIT
                if (frames >= SLIC_RCVQ_MAX_PROCESS_ISR) {
                        adapter->rcv_interrupt_yields++;
                        break;
                }
#endif
        }
        adapter->max_isr_rcvs = max(adapter->max_isr_rcvs, frames);
}

static void slic_xmit_complete(struct adapter *adapter)
{
        struct slic_hostcmd *hcmd;
        struct slic_rspbuf *rspbuf;
        u32 frames = 0;
        struct slic_handle_word slic_handle_word;

        do {
                rspbuf = slic_rspqueue_getnext(adapter);
                if (!rspbuf)
                        break;
                adapter->xmit_completes++;
                adapter->card->events++;
                /*
                 * Get the complete host command buffer
                 */
                slic_handle_word.handle_token = rspbuf->hosthandle;
                hcmd =
                        adapter->slic_handles[slic_handle_word.handle_index].
                                                                        address;
/*      hcmd = (struct slic_hostcmd *) rspbuf->hosthandle; */
                if (hcmd->type == SLIC_CMD_DUMB) {
                        if (hcmd->skb)
                                dev_kfree_skb_irq(hcmd->skb);
                        slic_cmdq_putdone_irq(adapter, hcmd);
                }
                rspbuf->status = 0;
                rspbuf->hosthandle = 0;
                frames++;
        } while (1);
        adapter->max_isr_xmits = max(adapter->max_isr_xmits, frames);
}

static void slic_interrupt_card_up(u32 isr, struct adapter *adapter,
                        struct net_device *dev)
{
        if (isr & ~ISR_IO) {
                if (isr & ISR_ERR) {
                        adapter->error_interrupts++;
                        if (isr & ISR_RMISS) {
                                int count;
                                int pre_count;
                                int errors;

                                struct slic_rcvqueue *rcvq =
                                        &adapter->rcvqueue;

                                adapter->error_rmiss_interrupts++;

                                if (!rcvq->errors)
                                        rcv_count = rcvq->count;
                                pre_count = rcvq->count;
                                errors = rcvq->errors;

                                while (rcvq->count < SLIC_RCVQ_FILLTHRESH) {
                                        count = slic_rcvqueue_fill(adapter);
                                        if (!count)
                                                break;
                                }
                        } else if (isr & ISR_XDROP) {
                                dev_err(&dev->dev,
                                                "isr & ISR_ERR [%x] ISR_XDROP\n",
                                                isr);
                        } else {
                                dev_err(&dev->dev,
                                                "isr & ISR_ERR [%x]\n",
                                                isr);
                        }
                }

                if (isr & ISR_LEVENT) {
                        adapter->linkevent_interrupts++;
                        if (slic_link_event_handler(adapter))
                                adapter->linkevent_interrupts--;
                }

                if ((isr & ISR_UPC) || (isr & ISR_UPCERR) ||
                    (isr & ISR_UPCBSY)) {
                        adapter->upr_interrupts++;
                        slic_upr_request_complete(adapter, isr);
                }
        }

        if (isr & ISR_RCV) {
                adapter->rcv_interrupts++;
                slic_rcv_handler(adapter);
        }

        if (isr & ISR_CMD) {
                adapter->xmit_interrupts++;
                slic_xmit_complete(adapter);
        }
}

static irqreturn_t slic_interrupt(int irq, void *dev_id)
{
        struct net_device *dev = dev_id;
        struct adapter *adapter = netdev_priv(dev);
        u32 isr;

        if ((adapter->pshmem) && (adapter->pshmem->isr)) {
                slic_reg32_write(&adapter->slic_regs->slic_icr,
                                 ICR_INT_MASK, FLUSH);
                isr = adapter->isrcopy = adapter->pshmem->isr;
                adapter->pshmem->isr = 0;
                adapter->num_isrs++;
                switch (adapter->card->state) {
                case CARD_UP:
                        slic_interrupt_card_up(isr, adapter, dev);
                        break;

                case CARD_DOWN:
                        if ((isr & ISR_UPC) ||
                            (isr & ISR_UPCERR) || (isr & ISR_UPCBSY)) {
                                adapter->upr_interrupts++;
                                slic_upr_request_complete(adapter, isr);
                        }
                        break;
                }

                adapter->isrcopy = 0;
                adapter->all_reg_writes += 2;
                adapter->isr_reg_writes++;
                slic_reg32_write(&adapter->slic_regs->slic_isr, 0, FLUSH);
        } else {
                adapter->false_interrupts++;
        }
        return IRQ_HANDLED;
}

#define NORMAL_ETHFRAME     0

static netdev_tx_t slic_xmit_start(struct sk_buff *skb, struct net_device *dev)
{
        struct sliccard *card;
        struct adapter *adapter = netdev_priv(dev);
        struct slic_hostcmd *hcmd = NULL;
        u32 status = 0;
        void *offloadcmd = NULL;

        card = adapter->card;
        if ((adapter->linkstate != LINK_UP) ||
            (adapter->state != ADAPT_UP) || (card->state != CARD_UP)) {
                status = XMIT_FAIL_LINK_STATE;
                goto xmit_fail;

        } else if (skb->len == 0) {
                status = XMIT_FAIL_ZERO_LENGTH;
                goto xmit_fail;
        }

        hcmd = slic_cmdq_getfree(adapter);
        if (!hcmd) {
                adapter->xmitq_full = 1;
                status = XMIT_FAIL_HOSTCMD_FAIL;
                goto xmit_fail;
        }
        hcmd->skb = skb;
        hcmd->busy = 1;
        hcmd->type = SLIC_CMD_DUMB;
        slic_xmit_build_request(adapter, hcmd, skb);
        dev->stats.tx_packets++;
        dev->stats.tx_bytes += skb->len;

#ifdef DEBUG_DUMP
        if (adapter->kill_card) {
                struct slic_host64_cmd ihcmd;

                ihcmd = &hcmd->cmd64;

                ihcmd->flags |= 0x40;
                adapter->kill_card = 0; /* only do this once */
        }
#endif
        if (hcmd->paddrh == 0) {
                slic_reg32_write(&adapter->slic_regs->slic_cbar,
                                 (hcmd->paddrl | hcmd->cmdsize), DONT_FLUSH);
        } else {
                slic_reg64_write(adapter, &adapter->slic_regs->slic_cbar64,
                                 (hcmd->paddrl | hcmd->cmdsize),
                                 &adapter->slic_regs->slic_addr_upper,
                                 hcmd->paddrh, DONT_FLUSH);
        }
xmit_done:
        return NETDEV_TX_OK;
xmit_fail:
        slic_xmit_fail(adapter, skb, offloadcmd, NORMAL_ETHFRAME, status);
        goto xmit_done;
}

static void slic_adapter_freeresources(struct adapter *adapter)
{
        slic_init_cleanup(adapter);
        adapter->error_interrupts = 0;
        adapter->rcv_interrupts = 0;
        adapter->xmit_interrupts = 0;
        adapter->linkevent_interrupts = 0;
        adapter->upr_interrupts = 0;
        adapter->num_isrs = 0;
        adapter->xmit_completes = 0;
        adapter->rcv_broadcasts = 0;
        adapter->rcv_multicasts = 0;
        adapter->rcv_unicasts = 0;
}

static int slic_adapter_allocresources(struct adapter *adapter,
                                       unsigned long *flags)
{
        if (!adapter->intrregistered) {
                int retval;

                spin_unlock_irqrestore(&slic_global.driver_lock, *flags);

                retval = request_irq(adapter->netdev->irq,
                                     &slic_interrupt,
                                     IRQF_SHARED,
                                     adapter->netdev->name, adapter->netdev);

                spin_lock_irqsave(&slic_global.driver_lock, *flags);

                if (retval) {
                        dev_err(&adapter->netdev->dev,
                                "request_irq (%s) FAILED [%x]\n",
                                adapter->netdev->name, retval);
                        return retval;
                }
                adapter->intrregistered = 1;
        }
        return 0;
}

/*
 *  slic_if_init
 *
 *  Perform initialization of our slic interface.
 *
 */
static int slic_if_init(struct adapter *adapter, unsigned long *flags)
{
        struct sliccard *card = adapter->card;
        struct net_device *dev = adapter->netdev;
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;
        struct slic_shmem *pshmem;
        int rc;

        /* adapter should be down at this point */
        if (adapter->state != ADAPT_DOWN) {
                dev_err(&dev->dev, "%s: adapter->state != ADAPT_DOWN\n",
                        __func__);
                rc = -EIO;
                goto err;
        }

        adapter->devflags_prev = dev->flags;
        adapter->macopts = MAC_DIRECTED;
        if (dev->flags) {
                if (dev->flags & IFF_BROADCAST)
                        adapter->macopts |= MAC_BCAST;
                if (dev->flags & IFF_PROMISC)
                        adapter->macopts |= MAC_PROMISC;
                if (dev->flags & IFF_ALLMULTI)
                        adapter->macopts |= MAC_ALLMCAST;
                if (dev->flags & IFF_MULTICAST)
                        adapter->macopts |= MAC_MCAST;
        }
        rc = slic_adapter_allocresources(adapter, flags);
        if (rc) {
                dev_err(&dev->dev, "slic_adapter_allocresources FAILED %x\n",
                        rc);
                slic_adapter_freeresources(adapter);
                goto err;
        }

        if (!adapter->queues_initialized) {
                rc = slic_rspqueue_init(adapter);
                if (rc)
                        goto err;
                rc = slic_cmdq_init(adapter);
                if (rc)
                        goto err;
                rc = slic_rcvqueue_init(adapter);
                if (rc)
                        goto err;
                adapter->queues_initialized = 1;
        }

        slic_reg32_write(&slic_regs->slic_icr, ICR_INT_OFF, FLUSH);
        mdelay(1);

        if (!adapter->isp_initialized) {
                unsigned long flags;

                pshmem = (struct slic_shmem *)(unsigned long)
                         adapter->phys_shmem;

                spin_lock_irqsave(&adapter->bit64reglock, flags);

#if BITS_PER_LONG == 64
                slic_reg32_write(&slic_regs->slic_addr_upper,
                                 SLIC_GET_ADDR_HIGH(&pshmem->isr), DONT_FLUSH);
                slic_reg32_write(&slic_regs->slic_isp,
                                 SLIC_GET_ADDR_LOW(&pshmem->isr), FLUSH);
#else
                slic_reg32_write(&slic_regs->slic_addr_upper, 0, DONT_FLUSH);
                slic_reg32_write(&slic_regs->slic_isp, (u32)&pshmem->isr,
                                FLUSH);
#endif
                spin_unlock_irqrestore(&adapter->bit64reglock, flags);
                adapter->isp_initialized = 1;
        }

        adapter->state = ADAPT_UP;
        if (!card->loadtimerset) {
                setup_timer(&card->loadtimer, &slic_timer_load_check,
                            (ulong)card);
                card->loadtimer.expires =
                    jiffies + (SLIC_LOADTIMER_PERIOD * HZ);
                add_timer(&card->loadtimer);

                card->loadtimerset = 1;
        }

        if (!adapter->pingtimerset) {
                setup_timer(&adapter->pingtimer, &slic_timer_ping, (ulong)dev);
                adapter->pingtimer.expires =
                    jiffies + (PING_TIMER_INTERVAL * HZ);
                add_timer(&adapter->pingtimer);
                adapter->pingtimerset = 1;
                adapter->card->pingstatus = ISR_PINGMASK;
        }

        /*
         *    clear any pending events, then enable interrupts
         */
        adapter->isrcopy = 0;
        adapter->pshmem->isr = 0;
        slic_reg32_write(&slic_regs->slic_isr, 0, FLUSH);
        slic_reg32_write(&slic_regs->slic_icr, ICR_INT_ON, FLUSH);

        slic_link_config(adapter, LINK_AUTOSPEED, LINK_AUTOD);
        rc = slic_link_event_handler(adapter);
        if (rc) {
                /* disable interrupts then clear pending events */
                slic_reg32_write(&slic_regs->slic_icr, ICR_INT_OFF, FLUSH);
                slic_reg32_write(&slic_regs->slic_isr, 0, FLUSH);
                if (adapter->pingtimerset) {
                        del_timer(&adapter->pingtimer);
                        adapter->pingtimerset = 0;
                }
                if (card->loadtimerset) {
                        del_timer(&card->loadtimer);
                        card->loadtimerset = 0;
                }
                adapter->state = ADAPT_DOWN;
                slic_adapter_freeresources(adapter);
        }

err:
        return rc;
}

static int slic_entry_open(struct net_device *dev)
{
        struct adapter *adapter = netdev_priv(dev);
        struct sliccard *card = adapter->card;
        unsigned long flags;
        int status;

        netif_stop_queue(adapter->netdev);

        spin_lock_irqsave(&slic_global.driver_lock, flags);
        if (!adapter->activated) {
                card->adapters_activated++;
                slic_global.num_slic_ports_active++;
                adapter->activated = 1;
        }
        status = slic_if_init(adapter, &flags);

        if (status != 0) {
                if (adapter->activated) {
                        card->adapters_activated--;
                        slic_global.num_slic_ports_active--;
                        adapter->activated = 0;
                }
                goto spin_unlock;
        }
        if (!card->master)
                card->master = adapter;

spin_unlock:
        spin_unlock_irqrestore(&slic_global.driver_lock, flags);
        return status;
}

static void slic_card_cleanup(struct sliccard *card)
{
        if (card->loadtimerset) {
                card->loadtimerset = 0;
                del_timer_sync(&card->loadtimer);
        }

        kfree(card);
}

static void slic_entry_remove(struct pci_dev *pcidev)
{
        struct net_device *dev = pci_get_drvdata(pcidev);
        struct adapter *adapter = netdev_priv(dev);
        struct sliccard *card;
        struct mcast_address *mcaddr, *mlist;

        unregister_netdev(dev);

        slic_adapter_freeresources(adapter);
        slic_unmap_mmio_space(adapter);

        /* free multicast addresses */
        mlist = adapter->mcastaddrs;
        while (mlist) {
                mcaddr = mlist;
                mlist = mlist->next;
                kfree(mcaddr);
        }
        card = adapter->card;
        card->adapters_allocated--;
        adapter->allocated = 0;
        if (!card->adapters_allocated) {
                struct sliccard *curr_card = slic_global.slic_card;

                if (curr_card == card) {
                        slic_global.slic_card = card->next;
                } else {
                        while (curr_card->next != card)
                                curr_card = curr_card->next;
                        curr_card->next = card->next;
                }
                slic_global.num_slic_cards--;
                slic_card_cleanup(card);
        }
        free_netdev(dev);
        pci_release_regions(pcidev);
        pci_disable_device(pcidev);
}

static int slic_entry_halt(struct net_device *dev)
{
        struct adapter *adapter = netdev_priv(dev);
        struct sliccard *card = adapter->card;
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;
        unsigned long flags;

        spin_lock_irqsave(&slic_global.driver_lock, flags);
        netif_stop_queue(adapter->netdev);
        adapter->state = ADAPT_DOWN;
        adapter->linkstate = LINK_DOWN;
        adapter->upr_list = NULL;
        adapter->upr_busy = 0;
        adapter->devflags_prev = 0;
        slic_reg32_write(&slic_regs->slic_icr, ICR_INT_OFF, FLUSH);
        adapter->all_reg_writes++;
        adapter->icr_reg_writes++;
        slic_config_clear(adapter);
        if (adapter->activated) {
                card->adapters_activated--;
                slic_global.num_slic_ports_active--;
                adapter->activated = 0;
        }
#ifdef AUTOMATIC_RESET
        slic_reg32_write(&slic_regs->slic_reset_iface, 0, FLUSH);
#endif
        /*
         *  Reset the adapter's cmd queues
         */
        slic_cmdq_reset(adapter);

#ifdef AUTOMATIC_RESET
        if (!card->adapters_activated)
                slic_card_init(card, adapter);
#endif

        spin_unlock_irqrestore(&slic_global.driver_lock, flags);
        return 0;
}

static struct net_device_stats *slic_get_stats(struct net_device *dev)
{
        struct adapter *adapter = netdev_priv(dev);

        dev->stats.collisions = adapter->slic_stats.iface.xmit_collisions;
        dev->stats.rx_errors = adapter->slic_stats.iface.rcv_errors;
        dev->stats.tx_errors = adapter->slic_stats.iface.xmt_errors;
        dev->stats.rx_missed_errors = adapter->slic_stats.iface.rcv_discards;
        dev->stats.tx_heartbeat_errors = 0;
        dev->stats.tx_aborted_errors = 0;
        dev->stats.tx_window_errors = 0;
        dev->stats.tx_fifo_errors = 0;
        dev->stats.rx_frame_errors = 0;
        dev->stats.rx_length_errors = 0;

        return &dev->stats;
}

static int slic_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
        struct adapter *adapter = netdev_priv(dev);
        struct ethtool_cmd edata;
        struct ethtool_cmd ecmd;
        u32 data[7];
        u32 intagg;

        switch (cmd) {
        case SIOCSLICSETINTAGG:
                if (copy_from_user(data, rq->ifr_data, 28))
                        return -EFAULT;
                intagg = data[0];
                dev_err(&dev->dev, "set interrupt aggregation to %d\n",
                        intagg);
                slic_intagg_set(adapter, intagg);
                return 0;

        case SIOCETHTOOL:
                if (copy_from_user(&ecmd, rq->ifr_data, sizeof(ecmd)))
                        return -EFAULT;

                if (ecmd.cmd == ETHTOOL_GSET) {
                        memset(&edata, 0, sizeof(edata));
                        edata.supported = (SUPPORTED_10baseT_Half |
                                           SUPPORTED_10baseT_Full |
                                           SUPPORTED_100baseT_Half |
                                           SUPPORTED_100baseT_Full |
                                           SUPPORTED_Autoneg | SUPPORTED_MII);
                        edata.port = PORT_MII;
                        edata.transceiver = XCVR_INTERNAL;
                        edata.phy_address = 0;
                        if (adapter->linkspeed == LINK_100MB)
                                edata.speed = SPEED_100;
                        else if (adapter->linkspeed == LINK_10MB)
                                edata.speed = SPEED_10;
                        else
                                edata.speed = 0;

                        if (adapter->linkduplex == LINK_FULLD)
                                edata.duplex = DUPLEX_FULL;
                        else
                                edata.duplex = DUPLEX_HALF;

                        edata.autoneg = AUTONEG_ENABLE;
                        edata.maxtxpkt = 1;
                        edata.maxrxpkt = 1;
                        if (copy_to_user(rq->ifr_data, &edata, sizeof(edata)))
                                return -EFAULT;

                } else if (ecmd.cmd == ETHTOOL_SSET) {
                        if (!capable(CAP_NET_ADMIN))
                                return -EPERM;

                        if (adapter->linkspeed == LINK_100MB)
                                edata.speed = SPEED_100;
                        else if (adapter->linkspeed == LINK_10MB)
                                edata.speed = SPEED_10;
                        else
                                edata.speed = 0;

                        if (adapter->linkduplex == LINK_FULLD)
                                edata.duplex = DUPLEX_FULL;
                        else
                                edata.duplex = DUPLEX_HALF;

                        edata.autoneg = AUTONEG_ENABLE;
                        edata.maxtxpkt = 1;
                        edata.maxrxpkt = 1;
                        if ((ecmd.speed != edata.speed) ||
                            (ecmd.duplex != edata.duplex)) {
                                u32 speed;
                                u32 duplex;

                                if (ecmd.speed == SPEED_10)
                                        speed = 0;
                                else
                                        speed = PCR_SPEED_100;
                                if (ecmd.duplex == DUPLEX_FULL)
                                        duplex = PCR_DUPLEX_FULL;
                                else
                                        duplex = 0;
                                slic_link_config(adapter, speed, duplex);
                                if (slic_link_event_handler(adapter))
                                        return -EFAULT;
                        }
                }
                return 0;
        default:
                return -EOPNOTSUPP;
        }
}

static void slic_config_pci(struct pci_dev *pcidev)
{
        u16 pci_command;
        u16 new_command;

        pci_read_config_word(pcidev, PCI_COMMAND, &pci_command);

        new_command = pci_command | PCI_COMMAND_MASTER
            | PCI_COMMAND_MEMORY
            | PCI_COMMAND_INVALIDATE
            | PCI_COMMAND_PARITY | PCI_COMMAND_SERR | PCI_COMMAND_FAST_BACK;
        if (pci_command != new_command)
                pci_write_config_word(pcidev, PCI_COMMAND, new_command);
}

static int slic_card_init(struct sliccard *card, struct adapter *adapter)
{
        __iomem struct slic_regs *slic_regs = adapter->slic_regs;
        struct slic_eeprom *peeprom;
        struct oslic_eeprom *pOeeprom;
        dma_addr_t phys_config;
        u32 phys_configh;
        u32 phys_configl;
        u32 i = 0;
        struct slic_shmem *pshmem;
        int status;
        uint macaddrs = card->card_size;
        ushort eecodesize;
        ushort dramsize;
        ushort ee_chksum;
        ushort calc_chksum;
        struct slic_config_mac *pmac;
        unsigned char fruformat;
        unsigned char oemfruformat;
        struct atk_fru *patkfru;
        union oemfru *poemfru;
        unsigned long flags;

        /* Reset everything except PCI configuration space */
        slic_soft_reset(adapter);

        /* Download the microcode */
        status = slic_card_download(adapter);
        if (status)
                return status;

        if (!card->config_set) {
                peeprom = pci_alloc_consistent(adapter->pcidev,
                                               sizeof(struct slic_eeprom),
                                               &phys_config);

                phys_configl = SLIC_GET_ADDR_LOW(phys_config);
                phys_configh = SLIC_GET_ADDR_HIGH(phys_config);

                if (!peeprom) {
                        dev_err(&adapter->pcidev->dev,
                                "Failed to allocate DMA memory for EEPROM.\n");
                        return -ENOMEM;
                }

                memset(peeprom, 0, sizeof(struct slic_eeprom));

                slic_reg32_write(&slic_regs->slic_icr, ICR_INT_OFF, FLUSH);
                mdelay(1);
                pshmem = (struct slic_shmem *)(unsigned long)
                         adapter->phys_shmem;

                spin_lock_irqsave(&adapter->bit64reglock, flags);
                slic_reg32_write(&slic_regs->slic_addr_upper,
                                 SLIC_GET_ADDR_HIGH(&pshmem->isr), DONT_FLUSH);
                slic_reg32_write(&slic_regs->slic_isp,
                                 SLIC_GET_ADDR_LOW(&pshmem->isr), FLUSH);
                spin_unlock_irqrestore(&adapter->bit64reglock, flags);

                status = slic_config_get(adapter, phys_configl, phys_configh);
                if (status) {
                        dev_err(&adapter->pcidev->dev,
                                "Failed to fetch config data from device.\n");
                        goto card_init_err;
                }

                for (;;) {
                        if (adapter->pshmem->isr) {
                                if (adapter->pshmem->isr & ISR_UPC) {
                                        adapter->pshmem->isr = 0;
                                        slic_reg64_write(adapter,
                                                &slic_regs->slic_isp, 0,
                                                &slic_regs->slic_addr_upper,
                                                0, FLUSH);
                                        slic_reg32_write(&slic_regs->slic_isr,
                                                         0, FLUSH);

                                        slic_upr_request_complete(adapter, 0);
                                        break;
                                }

                                adapter->pshmem->isr = 0;
                                slic_reg32_write(&slic_regs->slic_isr,
                                                 0, FLUSH);
                        } else {
                                mdelay(1);
                                i++;
                                if (i > 5000) {
                                        dev_err(&adapter->pcidev->dev,
                                                "Fetch of config data timed out.\n");
                                        slic_reg64_write(adapter,
                                                &slic_regs->slic_isp, 0,
                                                &slic_regs->slic_addr_upper,
                                                0, FLUSH);
                                        status = -EINVAL;
                                        goto card_init_err;
                                }
                        }
                }

                switch (adapter->devid) {
                /* Oasis card */
                case SLIC_2GB_DEVICE_ID:
                        /* extract EEPROM data and pointers to EEPROM data */
                        pOeeprom = (struct oslic_eeprom *)peeprom;
                        eecodesize = pOeeprom->EecodeSize;
                        dramsize = pOeeprom->DramSize;
                        pmac = pOeeprom->MacInfo;
                        fruformat = pOeeprom->FruFormat;
                        patkfru = &pOeeprom->AtkFru;
                        oemfruformat = pOeeprom->OemFruFormat;
                        poemfru = &pOeeprom->OemFru;
                        macaddrs = 2;
                        /*
                         * Minor kludge for Oasis card
                         * get 2 MAC addresses from the
                         * EEPROM to ensure that function 1
                         * gets the Port 1 MAC address
                         */
                        break;
                default:
                        /* extract EEPROM data and pointers to EEPROM data */
                        eecodesize = peeprom->EecodeSize;
                        dramsize = peeprom->DramSize;
                        pmac = peeprom->u2.mac.MacInfo;
                        fruformat = peeprom->FruFormat;
                        patkfru = &peeprom->AtkFru;
                        oemfruformat = peeprom->OemFruFormat;
                        poemfru = &peeprom->OemFru;
                        break;
                }

                card->config.EepromValid = false;

                /*  see if the EEPROM is valid by checking it's checksum */
                if ((eecodesize <= MAX_EECODE_SIZE) &&
                    (eecodesize >= MIN_EECODE_SIZE)) {

                        ee_chksum =
                            *(u16 *)((char *)peeprom + (eecodesize - 2));
                        /*
                         *  calculate the EEPROM checksum
                         */
                        calc_chksum = slic_eeprom_cksum(peeprom,
                                                        eecodesize - 2);
                        /*
                         *  if the ucdoe chksum flag bit worked,
                         *  we wouldn't need this
                         */
                        if (ee_chksum == calc_chksum)
                                card->config.EepromValid = true;
                }
                /*  copy in the DRAM size */
                card->config.DramSize = dramsize;

                /*  copy in the MAC address(es) */
                for (i = 0; i < macaddrs; i++) {
                        memcpy(&card->config.MacInfo[i],
                               &pmac[i], sizeof(struct slic_config_mac));
                }

                /*  copy the Alacritech FRU information */
                card->config.FruFormat = fruformat;
                memcpy(&card->config.AtkFru, patkfru,
                                                sizeof(struct atk_fru));

                pci_free_consistent(adapter->pcidev,
                                    sizeof(struct slic_eeprom),
                                    peeprom, phys_config);

                if (!card->config.EepromValid) {
                        slic_reg64_write(adapter, &slic_regs->slic_isp, 0,
                                         &slic_regs->slic_addr_upper,
                                         0, FLUSH);
                        dev_err(&adapter->pcidev->dev, "EEPROM invalid.\n");
                        return -EINVAL;
                }

                card->config_set = 1;
        }

        status = slic_card_download_gbrcv(adapter);
        if (status)
                return status;

        if (slic_global.dynamic_intagg)
                slic_intagg_set(adapter, 0);
        else
                slic_intagg_set(adapter, adapter->intagg_delay);

        /*
         *  Initialize ping status to "ok"
         */
        card->pingstatus = ISR_PINGMASK;

        /*
         * Lastly, mark our card state as up and return success
         */
        card->state = CARD_UP;
        card->reset_in_progress = 0;

        return 0;

card_init_err:
        pci_free_consistent(adapter->pcidev, sizeof(struct slic_eeprom),
                            peeprom, phys_config);
        return status;
}

static int slic_get_coalesce(struct net_device *dev,
                             struct ethtool_coalesce *coalesce)
{
        struct adapter *adapter = netdev_priv(dev);

        adapter->intagg_delay = coalesce->rx_coalesce_usecs;
        adapter->dynamic_intagg = coalesce->use_adaptive_rx_coalesce;
        return 0;
}

static int slic_set_coalesce(struct net_device *dev,
                             struct ethtool_coalesce *coalesce)
{
        struct adapter *adapter = netdev_priv(dev);

        coalesce->rx_coalesce_usecs = adapter->intagg_delay;
        coalesce->use_adaptive_rx_coalesce = adapter->dynamic_intagg;
        return 0;
}

static void slic_init_driver(void)
{
        if (slic_first_init) {
                slic_first_init = 0;
                spin_lock_init(&slic_global.driver_lock);
        }
}

static void slic_init_adapter(struct net_device *netdev,
                              struct pci_dev *pcidev,
                              const struct pci_device_id *pci_tbl_entry,
                              void __iomem *memaddr, int chip_idx)
{
        ushort index;
        struct slic_handle *pslic_handle;
        struct adapter *adapter = netdev_priv(netdev);

/*      adapter->pcidev = pcidev;*/
        adapter->vendid = pci_tbl_entry->vendor;
        adapter->devid = pci_tbl_entry->device;
        adapter->subsysid = pci_tbl_entry->subdevice;
        adapter->busnumber = pcidev->bus->number;
        adapter->slotnumber = ((pcidev->devfn >> 3) & 0x1F);
        adapter->functionnumber = (pcidev->devfn & 0x7);
        adapter->slic_regs = memaddr;
        adapter->irq = pcidev->irq;
        adapter->chipid = chip_idx;
        adapter->port = 0;
        adapter->cardindex = adapter->port;
        spin_lock_init(&adapter->upr_lock);
        spin_lock_init(&adapter->bit64reglock);
        spin_lock_init(&adapter->adapter_lock);
        spin_lock_init(&adapter->reset_lock);
        spin_lock_init(&adapter->handle_lock);

        adapter->card_size = 1;
        /*
         * Initialize slic_handle array
         */
        /*
         * Start with 1.  0 is an invalid host handle.
         */
        for (index = 1, pslic_handle = &adapter->slic_handles[1];
             index < SLIC_CMDQ_MAXCMDS; index++, pslic_handle++) {

                pslic_handle->token.handle_index = index;
                pslic_handle->type = SLIC_HANDLE_FREE;
                pslic_handle->next = adapter->pfree_slic_handles;
                adapter->pfree_slic_handles = pslic_handle;
        }
        adapter->pshmem = (struct slic_shmem *)
                                        pci_alloc_consistent(adapter->pcidev,
                                        sizeof(struct slic_shmem),
                                        &adapter->
                                        phys_shmem);
        if (adapter->pshmem)
                memset(adapter->pshmem, 0, sizeof(struct slic_shmem));
}

static const struct net_device_ops slic_netdev_ops = {
        .ndo_open               = slic_entry_open,
        .ndo_stop               = slic_entry_halt,
        .ndo_start_xmit         = slic_xmit_start,
        .ndo_do_ioctl           = slic_ioctl,
        .ndo_set_mac_address    = slic_mac_set_address,
        .ndo_get_stats          = slic_get_stats,
        .ndo_set_rx_mode        = slic_mcast_set_list,
        .ndo_validate_addr      = eth_validate_addr,
        .ndo_change_mtu         = eth_change_mtu,
};

static u32 slic_card_locate(struct adapter *adapter)
{
        struct sliccard *card = slic_global.slic_card;
        struct physcard *physcard = slic_global.phys_card;
        ushort card_hostid;
        u16 __iomem *hostid_reg;
        uint i;
        uint rdhostid_offset = 0;

        switch (adapter->devid) {
        case SLIC_2GB_DEVICE_ID:
                rdhostid_offset = SLIC_RDHOSTID_2GB;
                break;
        case SLIC_1GB_DEVICE_ID:
                rdhostid_offset = SLIC_RDHOSTID_1GB;
                break;
        default:
                return -ENODEV;
        }

        hostid_reg =
            (u16 __iomem *)(((u8 __iomem *)(adapter->slic_regs)) +
            rdhostid_offset);

        /* read the 16 bit hostid from SRAM */
        card_hostid = (ushort)readw(hostid_reg);

        /* Initialize a new card structure if need be */
        if (card_hostid == SLIC_HOSTID_DEFAULT) {
                card = kzalloc(sizeof(*card), GFP_KERNEL);
                if (!card)
                        return -ENOMEM;

                card->next = slic_global.slic_card;
                slic_global.slic_card = card;
                card->busnumber = adapter->busnumber;
                card->slotnumber = adapter->slotnumber;

                /* Find an available cardnum */