text: /**************************************************************************
   *
   * 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 const struct ethtool_ops slic_ethtool_ops;
  
  MODULE_DEVICE_TABLE(pci, slic_pci_tbl);
  
  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)
  {
  	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_write32(adapter, SLIC_REG_MCASTLOW, 0xFFFFFFFF);
  		slic_write32(adapter, SLIC_REG_MCASTHIGH, 0xFFFFFFFF);
  	} else {
  		/*
  		 * Commit our multicast mast to the SLIC by writing to the
  		 * multicast address mask registers
  		 */
  		slic_write32(adapter, SLIC_REG_MCASTLOW,
  			     (u32)(adapter->mcastmask & 0xFFFFFFFF));
  		slic_write32(adapter, SLIC_REG_MCASTHIGH,
  			     (u32)((adapter->mcastmask >> 32) & 0xFFFFFFFF));
  	}
  }
  
  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);
  }
  
  /*
   *  slic_link_config
   *
   *  Write phy control to configure link duplex/speed
   *
   */
  static void slic_link_config(struct adapter *adapter,
  		      u32 linkspeed, u32 linkduplex)
  {
  	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;
  
  	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_write32(adapter, SLIC_REG_WPHY, phy_advreg);
  
  			if (linkspeed == LINK_AUTOSPEED) {
  				/* reset phy, enable auto-neg  */
  				phy_config =
  				    (MIICR_REG_PCR |
  				     (PCR_RESET | PCR_AUTONEG |
  				      PCR_AUTONEG_RST));
  				slic_write32(adapter, SLIC_REG_WPHY,
  					     phy_config);
  			} else {	/* forced 1000 Mb FD*/
  				/*
  				 * power down phy to break link
  				 * this may not work)
  				 */
  				phy_config = (MIICR_REG_PCR | PCR_POWERDOWN);
  				slic_write32(adapter, SLIC_REG_WPHY,
  					     phy_config);
  				slic_flush_write(adapter);
  				/*
  				 * 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_write32(adapter, SLIC_REG_WPHY,
  					     phy_config);
  			}
  		} 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_write32(adapter, SLIC_REG_WPHY, phy_advreg);
  			/* advertise FD only @1000 Mb  */
  			phy_gctlreg = (MIICR_REG_9 | (PGC_ADV1000FD));
  			slic_write32(adapter, SLIC_REG_WPHY, phy_gctlreg);
  
  			if (adapter->subsysid != SLIC_1GB_CICADA_SUBSYS_ID) {
  				/*
  				 * if a Marvell PHY
  				 * enable auto crossover
  				 */
  				phy_config =
  				    (MIICR_REG_16 | (MRV_REG16_XOVERON));
  				slic_write32(adapter, SLIC_REG_WPHY,
  					     phy_config);
  
  				/* reset phy, enable auto-neg  */
  				phy_config =
  				    (MIICR_REG_PCR |
  				     (PCR_RESET | PCR_AUTONEG |
  				      PCR_AUTONEG_RST));
  				slic_write32(adapter, SLIC_REG_WPHY,
  					     phy_config);
  			} 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_write32(adapter, SLIC_REG_WPHY,
  					     phy_config);
  			}
  		}
  	} 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_write32(adapter, SLIC_REG_WPHY, phy_config);
  		}
  
  		/* power down phy to break link (this may not work)  */
  		phy_config = (MIICR_REG_PCR | (PCR_POWERDOWN | speed | duplex));
  		slic_write32(adapter, SLIC_REG_WPHY, phy_config);
  		slic_flush_write(adapter);
  		/* 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_write32(adapter, SLIC_REG_WPHY, phy_config);
  		} else {	/* it's a Cicada PHY  */
  			/* disable auto-neg, set speed, powerup  */
  			phy_config = (MIICR_REG_PCR | (speed | duplex));
  			slic_write32(adapter, SLIC_REG_WPHY, phy_config);
  		}
  	}
  }
  
  static int slic_card_download_gbrcv(struct adapter *adapter)
  {
  	const struct firmware *fw;
  	const char *file = "";
  	int ret;
  	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_write32(adapter, SLIC_REG_RCV_WCS, SLIC_RCVWCS_BEGIN);
  	/* download the rcv sequencer ucode */
  	for (codeaddr = 0; codeaddr < rcvucodelen; codeaddr++) {
  		/* write out instruction address */
  		slic_write32(adapter, SLIC_REG_RCV_WCS, codeaddr);
  
  		instruction = *(u32 *)(fw->data + index);
  		index += 4;
  		/* write out the instruction data low addr */
  		slic_write32(adapter, SLIC_REG_RCV_WCS, instruction);
  
  		instruction = *(u8 *)(fw->data + index);
  		index++;
  		/* write out the instruction data high addr */
  		slic_write32(adapter, SLIC_REG_RCV_WCS, instruction);
  	}
  
  	/* download finished */
  	release_firmware(fw);
  	slic_write32(adapter, SLIC_REG_RCV_WCS, SLIC_RCVWCS_FINISH);
  	slic_flush_write(adapter);
  
  	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;
  	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_write32(adapter, SLIC_REG_WCS,
  				     baseaddress + codeaddr);
  			/* Write out instruction to low addr */
  			slic_write32(adapter, SLIC_REG_WCS,
  				     instruction);
  			instruction = *(u32 *)(fw->data + index);
  			index += 4;
  
  			/* Write out instruction to high addr */
  			slic_write32(adapter, SLIC_REG_WCS,
  				     instruction);
  			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_write32(adapter, SLIC_REG_WCS,
  				     SLIC_WCS_COMPARE | (baseaddress +
  							 codeaddr));
  			/* Write out instruction to low addr */
  			slic_write32(adapter, SLIC_REG_WCS, instruction);
  			instruction = *(u32 *)(fw->data + index);
  			index += 4;
  			/* Write out instruction to high addr */
  			slic_write32(adapter, SLIC_REG_WCS, instruction);
  			instruction = *(u32 *)(fw->data + index);
  			index += 4;
  		}
  	}
  	release_firmware(fw);
  	/* Everything OK, kick off the card */
  	mdelay(10);
  
  	slic_write32(adapter, SLIC_REG_WCS, SLIC_WCS_START);
  	slic_flush_write(adapter);
  	/*
  	 * 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_write32(adapter, SLIC_REG_INTAGG, value);
  	adapter->card->loadlevel_current = value;
  }
  
  static void slic_soft_reset(struct adapter *adapter)
  {
  	if (adapter->card->state == CARD_UP) {
  		slic_write32(adapter, SLIC_REG_QUIESCE, 0);
  		slic_flush_write(adapter);
  		mdelay(1);
  	}
  
  	slic_write32(adapter, SLIC_REG_RESET, SLIC_RESET_MAGIC);
  	slic_flush_write(adapter);
  
  	mdelay(1);
  }
  
  static void slic_mac_address_config(struct adapter *adapter)
  {
  	u32 value;
  	u32 value2;
  
  	value = ntohl(*(__be32 *)&adapter->currmacaddr[2]);
  	slic_write32(adapter, SLIC_REG_WRADDRAL, value);
  	slic_write32(adapter, SLIC_REG_WRADDRBL, value);
  
  	value2 = (u32)((adapter->currmacaddr[0] << 8 |
  			     adapter->currmacaddr[1]) & 0xFFFF);
  
  	slic_write32(adapter, SLIC_REG_WRADDRAH, value2);
  	slic_write32(adapter, SLIC_REG_WRADDRBH, value2);
  
  	/*
  	 * 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;
  
  	/* 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_write32(adapter, SLIC_REG_WMCFG, value);
  
  	/* setup mac addresses */
  	slic_mac_address_config(adapter);
  }
  
  static void slic_config_set(struct adapter *adapter, bool linkchange)
  {
  	u32 value;
  	u32 RcrReset;
  
  	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_write32(adapter, SLIC_REG_WXCFG, value);
  
  		/* 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_write32(adapter, SLIC_REG_WXCFG, value);
  
  		/* 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_write32(adapter, SLIC_REG_WRCFG, value);
  }
  
  /*
   *  Turn off RCV and XMT, power down PHY
   */
  static void slic_config_clear(struct adapter *adapter)
  {
  	u32 value;
  	u32 phy_config;
  
  	/* Setup xmtcfg */
  	value = (GXCR_RESET |	/* Always reset */
  		 GXCR_PAUSEEN);	/* Enable pause */
  
  	slic_write32(adapter, SLIC_REG_WXCFG, value);
  
  	value = (GRCR_RESET |	/* Always reset      */
  		 GRCR_CTLEN |	/* Enable CTL frames */
  		 GRCR_ADDRAEN |	/* Address A enable  */
  		 (GRCR_HASHSIZE << GRCR_HASHSIZE_SHIFT));
  
  	slic_write32(adapter, SLIC_REG_WRCFG, value);
  
  	/* power down phy */
  	phy_config = (MIICR_REG_PCR | (PCR_POWERDOWN));
  	slic_write32(adapter, SLIC_REG_WPHY, phy_config);
  }
  
  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 load = card->events;
  	u32 level = 0;
  
  	if ((adapter) && (adapter->state == ADAPT_UP) &&
  	    (card->state == CARD_UP) && (slic_global.dynamic_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_write32(adapter, SLIC_REG_INTAGG, level);
  			}
  		} 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_write32(adapter, SLIC_REG_INTAGG, level);
  			}
  		}
  	}
  	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;
  
  	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_write32(adapter, SLIC_REG_RSTAT, upr->upr_data);
  		} else {
  			slic_write64(adapter, SLIC_REG_RSTAT64, upr->upr_data,
  				     upr->upr_data_h);
  		}
  		break;
  
  	case SLIC_UPR_RLSR:
  		slic_write64(adapter, SLIC_REG_LSTAT, upr->upr_data,
  			     upr->upr_data_h);
  		break;
  
  	case SLIC_UPR_RCONFIG:
  		slic_write64(adapter, SLIC_REG_RCONFIG, upr->upr_data,
  			     upr->upr_data_h);
  		break;
  	case SLIC_UPR_PING:
  		slic_write32(adapter, SLIC_REG_PING, 1);
  		break;
  	}
  	slic_flush_write(adapter);
  }
  
  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)
  {
  	struct slic_shmemory *sm = &adapter->shmem;
  	struct slic_shmem_data *sm_data = sm->shmem_data;
  	u32 lst = sm_data->lnkstatus;
  	uint linkup;
  	unsigned char linkspeed;
  	unsigned char linkduplex;
  
  	if ((isr & ISR_UPCERR) || (isr & ISR_UPCBSY)) {
  		dma_addr_t phaddr = sm->lnkstatus_phaddr;
  
  		slic_upr_queue_request(adapter, SLIC_UPR_RLSR,
  				       cpu_to_le32(lower_32_bits(phaddr)),
  				       cpu_to_le32(upper_32_bits(phaddr)),
  				       0, 0);
  		return;
  	}
  	if (adapter->state != ADAPT_UP)
  		return;
  
  	linkup = lst & GIG_LINKUP ? LINK_UP : LINK_DOWN;
  	if (lst & GIG_SPEED_1000)
  		linkspeed = LINK_1000MB;
  	else if (lst & GIG_SPEED_100)
  		linkspeed = LINK_100MB;
  	else
  		linkspeed = LINK_10MB;
  
  	if (lst & 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;
  		netif_carrier_off(adapter->netdev);
  		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_carrier_on(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_shmemory *sm = &adapter->shmem;
  		struct slic_shmem_data *sm_data = sm->shmem_data;
  		struct slic_stats *stats = &sm_data->stats;
  		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, stats->xmit_tcp_segs,
  				old->xmit_tcp_segs);
  
  		UPDATE_STATS_GB(stst->tcp.xmit_tcp_bytes, stats->xmit_tcp_bytes,
  				old->xmit_tcp_bytes);
  
  		UPDATE_STATS_GB(stst->tcp.rcv_tcp_segs, stats->rcv_tcp_segs,
  				old->rcv_tcp_segs);
  
  		UPDATE_STATS_GB(stst->tcp.rcv_tcp_bytes, stats->rcv_tcp_bytes,
  				old->rcv_tcp_bytes);
  
  		UPDATE_STATS_GB(stst->iface.xmt_bytes, stats->xmit_bytes,
  				old->xmit_bytes);
  
  		UPDATE_STATS_GB(stst->iface.xmt_ucast, stats->xmit_unicasts,
  				old->xmit_unicasts);
  
  		UPDATE_STATS_GB(stst->iface.rcv_bytes, stats->rcv_bytes,
  				old->rcv_bytes);
  
  		UPDATE_STATS_GB(stst->iface.rcv_ucast, stats->rcv_unicasts,
  				old->rcv_unicasts);
  
  		UPDATE_STATS_GB(stst->iface.xmt_errors, stats->xmit_collisions,
  				old->xmit_collisions);
  
  		UPDATE_STATS_GB(stst->iface.xmt_errors,
  				stats->xmit_excess_collisions,
  				old->xmit_excess_collisions);
  
  		UPDATE_STATS_GB(stst->iface.xmt_errors, stats->xmit_other_error,
  				old->xmit_other_error);
  
  		UPDATE_STATS_GB(stst->iface.rcv_errors, stats->rcv_other_error,
  				old->rcv_other_error);
  
  		UPDATE_STATS_GB(stst->iface.rcv_discards, stats->rcv_drops,
  				old->rcv_drops);
  
  		if (stats->rcv_drops > old->rcv_drops)
  			adapter->rcv_drops += (stats->rcv_drops -
  					       old->rcv_drops);
  		memcpy_fromio(old, stats, sizeof(*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;
  	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_write32(adapter, SLIC_REG_RBAR,
  				     rspq->paddr[i] | SLIC_RSPQ_BUFSINPAGE);
  		} else {
  			slic_write64(adapter, SLIC_REG_RBAR64,
  				     rspq->paddr[i] | SLIC_RSPQ_BUFSINPAGE,
  				     paddrh);
  		}
  	}
  	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_write64(adapter, SLIC_REG_RBAR64,
  			     rspq->paddr[rspq->pageindex] |
  			     SLIC_RSPQ_BUFSINPAGE, 0);
  		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_write32(adapter, SLIC_REG_HBAR,
  					     (u32)paddrl);
  			} else {
  				slic_write64(adapter, SLIC_REG_HBAR64, paddrl,
  					     paddrh);
  			}
  			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_write32(adapter, SLIC_REG_HBAR, (u32)paddrl);
  	else
  		slic_write64(adapter, SLIC_REG_HBAR64, paddrl, paddrh);
  	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_shmemory *sm = &adapter->shmem;
  	dma_addr_t phaddr = sm->lnkstatus_phaddr;
  
  	if (adapter->state != ADAPT_UP) {
  		/* Adapter is not operational.  Ignore.  */
  		return -ENODEV;
  	}
  	/* no 4GB wrap guaranteed */
  	status = slic_upr_request(adapter, SLIC_UPR_RLSR,
  				  cpu_to_le32(lower_32_bits(phaddr)),
  				  cpu_to_le32(upper_32_bits(phaddr)), 0, 0);
  	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->shmem.shmem_data) {
  		struct slic_shmemory *sm = &adapter->shmem;
  		struct slic_shmem_data *sm_data = sm->shmem_data;
  
  		pci_free_consistent(adapter->pcidev, sizeof(*sm_data), sm_data,
  				    sm->isr_phaddr);
  	}
  
  	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);
  	struct slic_shmemory *sm = &adapter->shmem;
  	struct slic_shmem_data *sm_data = sm->shmem_data;
  	u32 isr;
  
  	if (sm_data->isr) {
  		slic_write32(adapter, SLIC_REG_ICR, ICR_INT_MASK);
  		slic_flush_write(adapter);
  
  		isr = sm_data->isr;
  		sm_data->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->all_reg_writes += 2;
  		adapter->isr_reg_writes++;
  		slic_write32(adapter, SLIC_REG_ISR, 0);
  	} 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_write32(adapter, SLIC_REG_CBAR, (hcmd->paddrl |
  						      hcmd->cmdsize));
  	} else {
  		slic_write64(adapter, SLIC_REG_CBAR64,
  			     hcmd->paddrl | hcmd->cmdsize, hcmd->paddrh);
  	}
  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;
  	struct slic_shmemory *sm = &adapter->shmem;
  	struct slic_shmem_data *sm_data = sm->shmem_data;
  	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_write32(adapter, SLIC_REG_ICR, ICR_INT_OFF);
  	slic_flush_write(adapter);
  	mdelay(1);
  
  	if (!adapter->isp_initialized) {
  		unsigned long flags;
  
  		spin_lock_irqsave(&adapter->bit64reglock, flags);
  		slic_write32(adapter, SLIC_REG_ADDR_UPPER,
  			     cpu_to_le32(upper_32_bits(sm->isr_phaddr)));
  		slic_write32(adapter, SLIC_REG_ISP,
  			     cpu_to_le32(lower_32_bits(sm->isr_phaddr)));
  		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
  	 */
  	sm_data->isr = 0;
  	slic_write32(adapter, SLIC_REG_ISR, 0);
  	slic_write32(adapter, SLIC_REG_ICR, ICR_INT_ON);
  
  	slic_link_config(adapter, LINK_AUTOSPEED, LINK_AUTOD);
  	slic_flush_write(adapter);
  
  	rc = slic_link_event_handler(adapter);
  	if (rc) {
  		/* disable interrupts then clear pending events */
  		slic_write32(adapter, SLIC_REG_ICR, ICR_INT_OFF);
  		slic_write32(adapter, SLIC_REG_ISR, 0);
  		slic_flush_write(adapter);
  
  		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_carrier_off(dev);
  
  	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);
  
  	netif_start_queue(adapter->netdev);
  
  	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);
  	iounmap(adapter->regs);
  
  	/* 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;
  	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_write32(adapter, SLIC_REG_ICR, ICR_INT_OFF);
  	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_write32(adapter, SLIC_REG_RESET_IFACE, 0);
  #endif
  	slic_flush_write(adapter);
  
  	/*
  	 *  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);
  
  	netif_carrier_off(dev);
  
  	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)
  {
  	struct slic_shmemory *sm = &adapter->shmem;
  	struct slic_shmem_data *sm_data = sm->shmem_data;
  	struct slic_eeprom *peeprom;
  	struct oslic_eeprom *pOeeprom;
  	dma_addr_t phys_config;
  	u32 phys_configh;
  	u32 phys_configl;
  	u32 i = 0;
  	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);
  
  		if (!peeprom) {
  			dev_err(&adapter->pcidev->dev,
  				"Failed to allocate DMA memory for EEPROM.\n");
  			return -ENOMEM;
  		}
  
  		phys_configl = SLIC_GET_ADDR_LOW(phys_config);
  		phys_configh = SLIC_GET_ADDR_HIGH(phys_config);
  
  		memset(peeprom, 0, sizeof(struct slic_eeprom));
  
  		slic_write32(adapter, SLIC_REG_ICR, ICR_INT_OFF);
  		slic_flush_write(adapter);
  		mdelay(1);
  
  		spin_lock_irqsave(&adapter->bit64reglock, flags);
  		slic_write32(adapter, SLIC_REG_ADDR_UPPER,
  			     cpu_to_le32(upper_32_bits(sm->isr_phaddr)));
  		slic_write32(adapter, SLIC_REG_ISP,
  			     cpu_to_le32(lower_32_bits(sm->isr_phaddr)));
  		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 (sm_data->isr) {
  				if (sm_data->isr & ISR_UPC) {
  					sm_data->isr = 0;
  					slic_write64(adapter, SLIC_REG_ISP, 0,
  						     0);
  					slic_write32(adapter, SLIC_REG_ISR, 0);
  					slic_flush_write(adapter);
  
  					slic_upr_request_complete(adapter, 0);
  					break;
  				}
  
  				sm_data->isr = 0;
  				slic_write32(adapter, SLIC_REG_ISR, 0);
  				slic_flush_write(adapter);
  			} else {
  				mdelay(1);
  				i++;
  				if (i > 5000) {
  					dev_err(&adapter->pcidev->dev,
  						"Fetch of config data timed out.\n");
  					slic_write64(adapter, SLIC_REG_ISP,
  						     0, 0);
  					slic_flush_write(adapter);
  
  					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_write64(adapter, SLIC_REG_ISP, 0, 0);
  			slic_flush_write(adapter);
  			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 int 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);
  	struct slic_shmemory *sm = &adapter->shmem;
  	struct slic_shmem_data *sm_data;
  	dma_addr_t phaddr;
  
  /*	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->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;
  	}
  	sm_data = pci_zalloc_consistent(adapter->pcidev, sizeof(*sm_data),
  					&phaddr);
  	if (!sm_data)
  		return -ENOMEM;
  
  	sm->shmem_data = sm_data;
  	sm->isr_phaddr = phaddr;
  	sm->lnkstatus_phaddr = phaddr + offsetof(struct slic_shmem_data,
  						 lnkstatus);
  	sm->stats_phaddr = phaddr + offsetof(struct slic_shmem_data, stats);
  
  	return 0;
  }
  
  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;
  	uint i;
  
  	card_hostid = slic_read32(adapter, SLIC_REG_HOSTID);
  
  	/* 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 */
  		for (i = 0; i < SLIC_MAX_CARDS; i++) {
  			if (slic_global.cardnuminuse[i] == 0) {
  				slic_global.cardnuminuse[i] = 1;
  				card->cardnum = i;
  				break;
  			}
  		}
  		slic_global.num_slic_cards++;
  	} else {
  		/* Card exists, find the card this adapter belongs to */
  		while (card) {
  			if (card->cardnum == card_hostid)
  				break;
  			card = card->next;
  		}
  	}
  
  	if (!card)
  		return -ENXIO;
  	/* Put the adapter in the card's adapter list */
  	if (!card->adapter[adapter->port]) {
  		card->adapter[adapter->port] = adapter;
  		adapter->card = card;
  	}
  
  	card->card_size = 1;	/* one port per *logical* card */
  
  	while (physcard) {
  		for (i = 0; i < SLIC_MAX_PORTS; i++) {
  			if (physcard->adapter[i])
  				break;
  		}
  		if (i == SLIC_MAX_PORTS)
  			break;
  
  		if (physcard->adapter[i]->slotnumber == adapter->slotnumber)
  			break;
  		physcard = physcard->next;
  	}
  	if (!physcard) {
  		/* no structure allocated for this physical card yet */
  		physcard = kzalloc(sizeof(*physcard), GFP_ATOMIC);
  		if (!physcard) {
  			if (card_hostid == SLIC_HOSTID_DEFAULT)
  				kfree(card);
  			return -ENOMEM;
  		}
  
  		physcard->next = slic_global.phys_card;
  		slic_global.phys_card = physcard;
  		physcard->adapters_allocd = 1;
  	} else {
  		physcard->adapters_allocd++;
  	}
  	/* Note - this is ZERO relative */
  	adapter->physport = physcard->adapters_allocd - 1;
  
  	physcard->adapter[adapter->physport] = adapter;
  	adapter->physcard = physcard;
  
  	return 0;
  }
  
  static int slic_entry_probe(struct pci_dev *pcidev,
  			       const struct pci_device_id *pci_tbl_entry)
  {
  	static int cards_found;
  	static int did_version;
  	int err = -ENODEV;
  	struct net_device *netdev;
  	struct adapter *adapter;
  	void __iomem *memmapped_ioaddr = NULL;
  	ulong mmio_start = 0;
  	ulong mmio_len = 0;
  	struct sliccard *card = NULL;
  	int pci_using_dac = 0;
  
  	err = pci_enable_device(pcidev);
  
  	if (err)
  		return err;
  
  	if (did_version++ == 0) {
  		dev_info(&pcidev->dev, "%s\n", slic_banner);
  		dev_info(&pcidev->dev, "%s\n", slic_proc_version);
  	}
  
  	if (!pci_set_dma_mask(pcidev, DMA_BIT_MASK(64))) {
  		pci_using_dac = 1;
  		err = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
  		if (err) {
  			dev_err(&pcidev->dev, "unable to obtain 64-bit DMA for consistent allocations\n");
  			goto err_out_disable_pci;
  		}
  	} else {
  		err = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
  		if (err) {
  			dev_err(&pcidev->dev, "no usable DMA configuration\n");
  			goto err_out_disable_pci;
  		}
  		pci_using_dac = 0;
  		pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32));
  	}
  
  	err = pci_request_regions(pcidev, DRV_NAME);
  	if (err) {
  		dev_err(&pcidev->dev, "can't obtain PCI resources\n");
  		goto err_out_disable_pci;
  	}
  
  	pci_set_master(pcidev);
  
  	netdev = alloc_etherdev(sizeof(struct adapter));
  	if (!netdev) {
  		err = -ENOMEM;
  		goto err_out_exit_slic_probe;
  	}
  
  	netdev->ethtool_ops = &slic_ethtool_ops;
  	SET_NETDEV_DEV(netdev, &pcidev->dev);
  
  	pci_set_drvdata(pcidev, netdev);
  	adapter = netdev_priv(netdev);
  	adapter->netdev = netdev;
  	adapter->pcidev = pcidev;
  	slic_global.dynamic_intagg = adapter->dynamic_intagg;
  	if (pci_using_dac)
  		netdev->features |= NETIF_F_HIGHDMA;
  
  	mmio_start = pci_resource_start(pcidev, 0);
  	mmio_len = pci_resource_len(pcidev, 0);
  
  	memmapped_ioaddr = ioremap_nocache(mmio_start, mmio_len);
  	if (!memmapped_ioaddr) {
  		dev_err(&pcidev->dev, "cannot remap MMIO region %lx @ %lx\n",
  			mmio_len, mmio_start);
  		err = -ENOMEM;
  		goto err_out_free_netdev;
  	}
  
  	slic_config_pci(pcidev);
  
  	slic_init_driver();
  
  	err = slic_init_adapter(netdev, pcidev, pci_tbl_entry, memmapped_ioaddr,
  				cards_found);
  	if (err) {
  		dev_err(&pcidev->dev, "failed to init adapter: %i\n", err);
  		goto err_out_unmap;
  	}
  
  	err = slic_card_locate(adapter);
  	if (err) {
  		dev_err(&pcidev->dev, "cannot locate card\n");
  		goto err_clean_init;
  	}
  
  	card = adapter->card;
  
  	if (!adapter->allocated) {
  		card->adapters_allocated++;
  		adapter->allocated = 1;
  	}
  
  	err = slic_card_init(card, adapter);
  	if (err)
  		goto err_clean_init;
  
  	slic_adapter_set_hwaddr(adapter);
  
  	netdev->base_addr = (unsigned long)memmapped_ioaddr;
  	netdev->irq = adapter->irq;
  	netdev->netdev_ops = &slic_netdev_ops;
  
  	netif_carrier_off(netdev);
  
  	strcpy(netdev->name, "eth%d");
  	err = register_netdev(netdev);
  	if (err) {
  		dev_err(&pcidev->dev, "Cannot register net device, aborting.\n");
  		goto err_clean_init;
  	}
  
  	cards_found++;
  
  	return 0;
  
  err_clean_init:
  	slic_init_cleanup(adapter);
  err_out_unmap:
  	iounmap(memmapped_ioaddr);
  err_out_free_netdev:
  	free_netdev(netdev);
  err_out_exit_slic_probe:
  	pci_release_regions(pcidev);
  err_out_disable_pci:
  	pci_disable_device(pcidev);
  	return err;
  }
  
  static struct pci_driver slic_driver = {
  	.name = DRV_NAME,
  	.id_table = slic_pci_tbl,
  	.probe = slic_entry_probe,
  	.remove = slic_entry_remove,
  };
  
  static int __init slic_module_init(void)
  {
  	slic_init_driver();
  
  	return pci_register_driver(&slic_driver);
  }
  
  static void __exit slic_module_cleanup(void)
  {
  	pci_unregister_driver(&slic_driver);
  }
  
  static const struct ethtool_ops slic_ethtool_ops = {
  	.get_coalesce = slic_get_coalesce,
  	.set_coalesce = slic_set_coalesce
  };
  
  module_init(slic_module_init);
  module_exit(slic_module_cleanup);
  