toshiba: Move the Toshiba drivers

Move the Toshiba ethernet drivers into drivers/net/ethernet/toshiba
and make the necessary Kconfig and Makefile changes.

CC: Geoff Levand <geoff@infradead.org>
CC: Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
CC: Ishizaki Kou <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 2603 deletions

diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c
deleted file mode 100644
index 1ff3491c8240..000000000000
--- a/drivers/net/spider_net.c
+++ /dev/null
@@ -1,2603 +0,0 @@
-/*
- * Network device driver for Cell Processor-Based Blade and Celleb platform
- *
- * (C) Copyright IBM Corp. 2005
- * (C) Copyright 2006 TOSHIBA CORPORATION
- *
- * Authors : Utz Bacher <utz.bacher@de.ibm.com>
- *           Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/compiler.h>
-#include <linux/crc32.h>
-#include <linux/delay.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/firmware.h>
-#include <linux/if_vlan.h>
-#include <linux/in.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/gfp.h>
-#include <linux/ioport.h>
-#include <linux/ip.h>
-#include <linux/kernel.h>
-#include <linux/mii.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/device.h>
-#include <linux/pci.h>
-#include <linux/skbuff.h>
-#include <linux/tcp.h>
-#include <linux/types.h>
-#include <linux/vmalloc.h>
-#include <linux/wait.h>
-#include <linux/workqueue.h>
-#include <linux/bitops.h>
-#include <asm/pci-bridge.h>
-#include <net/checksum.h>
-
-#include "spider_net.h"
-
-MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com> and Jens Osterkamp " \
-	      "<Jens.Osterkamp@de.ibm.com>");
-MODULE_DESCRIPTION("Spider Southbridge Gigabit Ethernet driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(VERSION);
-MODULE_FIRMWARE(SPIDER_NET_FIRMWARE_NAME);
-
-static int rx_descriptors = SPIDER_NET_RX_DESCRIPTORS_DEFAULT;
-static int tx_descriptors = SPIDER_NET_TX_DESCRIPTORS_DEFAULT;
-
-module_param(rx_descriptors, int, 0444);
-module_param(tx_descriptors, int, 0444);
-
-MODULE_PARM_DESC(rx_descriptors, "number of descriptors used " \
-		 "in rx chains");
-MODULE_PARM_DESC(tx_descriptors, "number of descriptors used " \
-		 "in tx chain");
-
-char spider_net_driver_name[] = "spidernet";
-
-static DEFINE_PCI_DEVICE_TABLE(spider_net_pci_tbl) = {
-	{ PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_SPIDER_NET,
-	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
-	{ 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, spider_net_pci_tbl);
-
-/**
- * spider_net_read_reg - reads an SMMIO register of a card
- * @card: device structure
- * @reg: register to read from
- *
- * returns the content of the specified SMMIO register.
- */
-static inline u32
-spider_net_read_reg(struct spider_net_card *card, u32 reg)
-{
-	/* We use the powerpc specific variants instead of readl_be() because
-	 * we know spidernet is not a real PCI device and we can thus avoid the
-	 * performance hit caused by the PCI workarounds.
-	 */
-	return in_be32(card->regs + reg);
-}
-
-/**
- * spider_net_write_reg - writes to an SMMIO register of a card
- * @card: device structure
- * @reg: register to write to
- * @value: value to write into the specified SMMIO register
- */
-static inline void
-spider_net_write_reg(struct spider_net_card *card, u32 reg, u32 value)
-{
-	/* We use the powerpc specific variants instead of writel_be() because
-	 * we know spidernet is not a real PCI device and we can thus avoid the
-	 * performance hit caused by the PCI workarounds.
-	 */
-	out_be32(card->regs + reg, value);
-}
-
-/** spider_net_write_phy - write to phy register
- * @netdev: adapter to be written to
- * @mii_id: id of MII
- * @reg: PHY register
- * @val: value to be written to phy register
- *
- * spider_net_write_phy_register writes to an arbitrary PHY
- * register via the spider GPCWOPCMD register. We assume the queue does
- * not run full (not more than 15 commands outstanding).
- **/
-static void
-spider_net_write_phy(struct net_device *netdev, int mii_id,
-		     int reg, int val)
-{
-	struct spider_net_card *card = netdev_priv(netdev);
-	u32 writevalue;
-
-	writevalue = ((u32)mii_id << 21) |
-		((u32)reg << 16) | ((u32)val);
-
-	spider_net_write_reg(card, SPIDER_NET_GPCWOPCMD, writevalue);
-}
-
-/** spider_net_read_phy - read from phy register
- * @netdev: network device to be read from
- * @mii_id: id of MII
- * @reg: PHY register
- *
- * Returns value read from PHY register
- *
- * spider_net_write_phy reads from an arbitrary PHY
- * register via the spider GPCROPCMD register
- **/
-static int
-spider_net_read_phy(struct net_device *netdev, int mii_id, int reg)
-{
-	struct spider_net_card *card = netdev_priv(netdev);
-	u32 readvalue;
-
-	readvalue = ((u32)mii_id << 21) | ((u32)reg << 16);
-	spider_net_write_reg(card, SPIDER_NET_GPCROPCMD, readvalue);
-
-	/* we don't use semaphores to wait for an SPIDER_NET_GPROPCMPINT
-	 * interrupt, as we poll for the completion of the read operation
-	 * in spider_net_read_phy. Should take about 50 us */
-	do {
-		readvalue = spider_net_read_reg(card, SPIDER_NET_GPCROPCMD);
-	} while (readvalue & SPIDER_NET_GPREXEC);
-
-	readvalue &= SPIDER_NET_GPRDAT_MASK;
-
-	return readvalue;
-}
-
-/**
- * spider_net_setup_aneg - initial auto-negotiation setup
- * @card: device structure
- **/
-static void
-spider_net_setup_aneg(struct spider_net_card *card)
-{
-	struct mii_phy *phy = &card->phy;
-	u32 advertise = 0;
-	u16 bmsr, estat;
-
-	bmsr  = spider_net_read_phy(card->netdev, phy->mii_id, MII_BMSR);
-	estat = spider_net_read_phy(card->netdev, phy->mii_id, MII_ESTATUS);
-
-	if (bmsr & BMSR_10HALF)
-		advertise |= ADVERTISED_10baseT_Half;
-	if (bmsr & BMSR_10FULL)
-		advertise |= ADVERTISED_10baseT_Full;
-	if (bmsr & BMSR_100HALF)
-		advertise |= ADVERTISED_100baseT_Half;
-	if (bmsr & BMSR_100FULL)
-		advertise |= ADVERTISED_100baseT_Full;
-
-	if ((bmsr & BMSR_ESTATEN) && (estat & ESTATUS_1000_TFULL))
-		advertise |= SUPPORTED_1000baseT_Full;
-	if ((bmsr & BMSR_ESTATEN) && (estat & ESTATUS_1000_THALF))
-		advertise |= SUPPORTED_1000baseT_Half;
-
-	mii_phy_probe(phy, phy->mii_id);
-	phy->def->ops->setup_aneg(phy, advertise);
-
-}
-
-/**
- * spider_net_rx_irq_off - switch off rx irq on this spider card
- * @card: device structure
- *
- * switches off rx irq by masking them out in the GHIINTnMSK register
- */
-static void
-spider_net_rx_irq_off(struct spider_net_card *card)
-{
-	u32 regvalue;
-
-	regvalue = SPIDER_NET_INT0_MASK_VALUE & (~SPIDER_NET_RXINT);
-	spider_net_write_reg(card, SPIDER_NET_GHIINT0MSK, regvalue);
-}
-
-/**
- * spider_net_rx_irq_on - switch on rx irq on this spider card
- * @card: device structure
- *
- * switches on rx irq by enabling them in the GHIINTnMSK register
- */
-static void
-spider_net_rx_irq_on(struct spider_net_card *card)
-{
-	u32 regvalue;
-
-	regvalue = SPIDER_NET_INT0_MASK_VALUE | SPIDER_NET_RXINT;
-	spider_net_write_reg(card, SPIDER_NET_GHIINT0MSK, regvalue);
-}
-
-/**
- * spider_net_set_promisc - sets the unicast address or the promiscuous mode
- * @card: card structure
- *
- * spider_net_set_promisc sets the unicast destination address filter and
- * thus either allows for non-promisc mode or promisc mode
- */
-static void
-spider_net_set_promisc(struct spider_net_card *card)
-{
-	u32 macu, macl;
-	struct net_device *netdev = card->netdev;
-
-	if (netdev->flags & IFF_PROMISC) {
-		/* clear destination entry 0 */
-		spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR, 0);
-		spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR + 0x04, 0);
-		spider_net_write_reg(card, SPIDER_NET_GMRUA0FIL15R,
-				     SPIDER_NET_PROMISC_VALUE);
-	} else {
-		macu = netdev->dev_addr[0];
-		macu <<= 8;
-		macu |= netdev->dev_addr[1];
-		memcpy(&macl, &netdev->dev_addr[2], sizeof(macl));
-
-		macu |= SPIDER_NET_UA_DESCR_VALUE;
-		spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR, macu);
-		spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR + 0x04, macl);
-		spider_net_write_reg(card, SPIDER_NET_GMRUA0FIL15R,
-				     SPIDER_NET_NONPROMISC_VALUE);
-	}
-}
-
-/**
- * spider_net_get_mac_address - read mac address from spider card
- * @card: device structure
- *
- * reads MAC address from GMACUNIMACU and GMACUNIMACL registers
- */
-static int
-spider_net_get_mac_address(struct net_device *netdev)
-{
-	struct spider_net_card *card = netdev_priv(netdev);
-	u32 macl, macu;
-
-	macl = spider_net_read_reg(card, SPIDER_NET_GMACUNIMACL);
-	macu = spider_net_read_reg(card, SPIDER_NET_GMACUNIMACU);
-
-	netdev->dev_addr[0] = (macu >> 24) & 0xff;
-	netdev->dev_addr[1] = (macu >> 16) & 0xff;
-	netdev->dev_addr[2] = (macu >> 8) & 0xff;
-	netdev->dev_addr[3] = macu & 0xff;
-	netdev->dev_addr[4] = (macl >> 8) & 0xff;
-	netdev->dev_addr[5] = macl & 0xff;
-
-	if (!is_valid_ether_addr(&netdev->dev_addr[0]))
-		return -EINVAL;
-
-	return 0;
-}
-
-/**
- * spider_net_get_descr_status -- returns the status of a descriptor
- * @descr: descriptor to look at
- *
- * returns the status as in the dmac_cmd_status field of the descriptor
- */
-static inline int
-spider_net_get_descr_status(struct spider_net_hw_descr *hwdescr)
-{
-	return hwdescr->dmac_cmd_status & SPIDER_NET_DESCR_IND_PROC_MASK;
-}
-
-/**
- * spider_net_free_chain - free descriptor chain
- * @card: card structure
- * @chain: address of chain
- *
- */
-static void
-spider_net_free_chain(struct spider_net_card *card,
-		      struct spider_net_descr_chain *chain)
-{
-	struct spider_net_descr *descr;
-
-	descr = chain->ring;
-	do {
-		descr->bus_addr = 0;
-		descr->hwdescr->next_descr_addr = 0;
-		descr = descr->next;
-	} while (descr != chain->ring);
-
-	dma_free_coherent(&card->pdev->dev, chain->num_desc,
-	    chain->hwring, chain->dma_addr);
-}
-
-/**
- * spider_net_init_chain - alloc and link descriptor chain
- * @card: card structure
- * @chain: address of chain
- *
- * We manage a circular list that mirrors the hardware structure,
- * except that the hardware uses bus addresses.
- *
- * Returns 0 on success, <0 on failure
- */
-static int
-spider_net_init_chain(struct spider_net_card *card,
-		       struct spider_net_descr_chain *chain)
-{
-	int i;
-	struct spider_net_descr *descr;
-	struct spider_net_hw_descr *hwdescr;
-	dma_addr_t buf;
-	size_t alloc_size;
-
-	alloc_size = chain->num_desc * sizeof(struct spider_net_hw_descr);
-
-	chain->hwring = dma_alloc_coherent(&card->pdev->dev, alloc_size,
-		&chain->dma_addr, GFP_KERNEL);
-
-	if (!chain->hwring)
-		return -ENOMEM;
-
-	memset(chain->ring, 0, chain->num_desc * sizeof(struct spider_net_descr));
-
-	/* Set up the hardware pointers in each descriptor */
-	descr = chain->ring;
-	hwdescr = chain->hwring;
-	buf = chain->dma_addr;
-	for (i=0; i < chain->num_desc; i++, descr++, hwdescr++) {
-		hwdescr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
-		hwdescr->next_descr_addr = 0;
-
-		descr->hwdescr = hwdescr;
-		descr->bus_addr = buf;
-		descr->next = descr + 1;
-		descr->prev = descr - 1;
-
-		buf += sizeof(struct spider_net_hw_descr);
-	}
-	/* do actual circular list */
-	(descr-1)->next = chain->ring;
-	chain->ring->prev = descr-1;
-
-	spin_lock_init(&chain->lock);
-	chain->head = chain->ring;
-	chain->tail = chain->ring;
-	return 0;
-}
-
-/**
- * spider_net_free_rx_chain_contents - frees descr contents in rx chain
- * @card: card structure
- *
- * returns 0 on success, <0 on failure
- */
-static void
-spider_net_free_rx_chain_contents(struct spider_net_card *card)
-{
-	struct spider_net_descr *descr;
-
-	descr = card->rx_chain.head;
-	do {
-		if (descr->skb) {
-			pci_unmap_single(card->pdev, descr->hwdescr->buf_addr,
-					 SPIDER_NET_MAX_FRAME,
-					 PCI_DMA_BIDIRECTIONAL);
-			dev_kfree_skb(descr->skb);
-			descr->skb = NULL;
-		}
-		descr = descr->next;
-	} while (descr != card->rx_chain.head);
-}
-
-/**
- * spider_net_prepare_rx_descr - Reinitialize RX descriptor
- * @card: card structure
- * @descr: descriptor to re-init
- *
- * Return 0 on success, <0 on failure.
- *
- * Allocates a new rx skb, iommu-maps it and attaches it to the
- * descriptor. Mark the descriptor as activated, ready-to-use.
- */
-static int
-spider_net_prepare_rx_descr(struct spider_net_card *card,
-			    struct spider_net_descr *descr)
-{
-	struct spider_net_hw_descr *hwdescr = descr->hwdescr;
-	dma_addr_t buf;
-	int offset;
-	int bufsize;
-
-	/* we need to round up the buffer size to a multiple of 128 */
-	bufsize = (SPIDER_NET_MAX_FRAME + SPIDER_NET_RXBUF_ALIGN - 1) &
-		(~(SPIDER_NET_RXBUF_ALIGN - 1));
-
-	/* and we need to have it 128 byte aligned, therefore we allocate a
-	 * bit more */
-	/* allocate an skb */
-	descr->skb = netdev_alloc_skb(card->netdev,
-				      bufsize + SPIDER_NET_RXBUF_ALIGN - 1);
-	if (!descr->skb) {
-		if (netif_msg_rx_err(card) && net_ratelimit())
-			dev_err(&card->netdev->dev,
-			        "Not enough memory to allocate rx buffer\n");
-		card->spider_stats.alloc_rx_skb_error++;
-		return -ENOMEM;
-	}
-	hwdescr->buf_size = bufsize;
-	hwdescr->result_size = 0;
-	hwdescr->valid_size = 0;
-	hwdescr->data_status = 0;
-	hwdescr->data_error = 0;
-
-	offset = ((unsigned long)descr->skb->data) &
-		(SPIDER_NET_RXBUF_ALIGN - 1);
-	if (offset)
-		skb_reserve(descr->skb, SPIDER_NET_RXBUF_ALIGN - offset);
-	/* iommu-map the skb */
-	buf = pci_map_single(card->pdev, descr->skb->data,
-			SPIDER_NET_MAX_FRAME, PCI_DMA_FROMDEVICE);
-	if (pci_dma_mapping_error(card->pdev, buf)) {
-		dev_kfree_skb_any(descr->skb);
-		descr->skb = NULL;
-		if (netif_msg_rx_err(card) && net_ratelimit())
-			dev_err(&card->netdev->dev, "Could not iommu-map rx buffer\n");
-		card->spider_stats.rx_iommu_map_error++;
-		hwdescr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
-	} else {
-		hwdescr->buf_addr = buf;
-		wmb();
-		hwdescr->dmac_cmd_status = SPIDER_NET_DESCR_CARDOWNED |
-					 SPIDER_NET_DMAC_NOINTR_COMPLETE;
-	}
-
-	return 0;
-}
-
-/**
- * spider_net_enable_rxchtails - sets RX dmac chain tail addresses
- * @card: card structure
- *
- * spider_net_enable_rxchtails sets the RX DMAC chain tail addresses in the
- * chip by writing to the appropriate register. DMA is enabled in
- * spider_net_enable_rxdmac.
- */
-static inline void
-spider_net_enable_rxchtails(struct spider_net_card *card)
-{
-	/* assume chain is aligned correctly */
-	spider_net_write_reg(card, SPIDER_NET_GDADCHA ,
-			     card->rx_chain.tail->bus_addr);
-}
-
-/**
- * spider_net_enable_rxdmac - enables a receive DMA controller
- * @card: card structure
- *
- * spider_net_enable_rxdmac enables the DMA controller by setting RX_DMA_EN
- * in the GDADMACCNTR register
- */
-static inline void
-spider_net_enable_rxdmac(struct spider_net_card *card)
-{
-	wmb();
-	spider_net_write_reg(card, SPIDER_NET_GDADMACCNTR,
-			     SPIDER_NET_DMA_RX_VALUE);
-}
-
-/**
- * spider_net_disable_rxdmac - disables the receive DMA controller
- * @card: card structure
- *
- * spider_net_disable_rxdmac terminates processing on the DMA controller
- * by turing off the DMA controller, with the force-end flag set.
- */
-static inline void
-spider_net_disable_rxdmac(struct spider_net_card *card)
-{
-	spider_net_write_reg(card, SPIDER_NET_GDADMACCNTR,
-			     SPIDER_NET_DMA_RX_FEND_VALUE);
-}
-
-/**
- * spider_net_refill_rx_chain - refills descriptors/skbs in the rx chains
- * @card: card structure
- *
- * refills descriptors in the rx chain: allocates skbs and iommu-maps them.
- */
-static void
-spider_net_refill_rx_chain(struct spider_net_card *card)
-{
-	struct spider_net_descr_chain *chain = &card->rx_chain;
-	unsigned long flags;
-
-	/* one context doing the refill (and a second context seeing that
-	 * and omitting it) is ok. If called by NAPI, we'll be called again
-	 * as spider_net_decode_one_descr is called several times. If some
-	 * interrupt calls us, the NAPI is about to clean up anyway. */
-	if (!spin_trylock_irqsave(&chain->lock, flags))
-		return;
-
-	while (spider_net_get_descr_status(chain->head->hwdescr) ==
-			SPIDER_NET_DESCR_NOT_IN_USE) {
-		if (spider_net_prepare_rx_descr(card, chain->head))
-			break;
-		chain->head = chain->head->next;
-	}
-
-	spin_unlock_irqrestore(&chain->lock, flags);
-}
-
-/**
- * spider_net_alloc_rx_skbs - Allocates rx skbs in rx descriptor chains
- * @card: card structure
- *
- * Returns 0 on success, <0 on failure.
- */
-static int
-spider_net_alloc_rx_skbs(struct spider_net_card *card)
-{
-	struct spider_net_descr_chain *chain = &card->rx_chain;
-	struct spider_net_descr *start = chain->tail;
-	struct spider_net_descr *descr = start;
-
-	/* Link up the hardware chain pointers */
-	do {
-		descr->prev->hwdescr->next_descr_addr = descr->bus_addr;
-		descr = descr->next;
-	} while (descr != start);
-
-	/* Put at least one buffer into the chain. if this fails,
-	 * we've got a problem. If not, spider_net_refill_rx_chain
-	 * will do the rest at the end of this function. */
-	if (spider_net_prepare_rx_descr(card, chain->head))
-		goto error;
-	else
-		chain->head = chain->head->next;
-
-	/* This will allocate the rest of the rx buffers;
-	 * if not, it's business as usual later on. */
-	spider_net_refill_rx_chain(card);
-	spider_net_enable_rxdmac(card);
-	return 0;
-
-error:
-	spider_net_free_rx_chain_contents(card);
-	return -ENOMEM;
-}
-
-/**
- * spider_net_get_multicast_hash - generates hash for multicast filter table
- * @addr: multicast address
- *
- * returns the hash value.
- *
- * spider_net_get_multicast_hash calculates a hash value for a given multicast
- * address, that is used to set the multicast filter tables
- */
-static u8
-spider_net_get_multicast_hash(struct net_device *netdev, __u8 *addr)
-{
-	u32 crc;
-	u8 hash;
-	char addr_for_crc[ETH_ALEN] = { 0, };
-	int i, bit;
-
-	for (i = 0; i < ETH_ALEN * 8; i++) {
-		bit = (addr[i / 8] >> (i % 8)) & 1;
-		addr_for_crc[ETH_ALEN - 1 - i / 8] += bit << (7 - (i % 8));
-	}
-
-	crc = crc32_be(~0, addr_for_crc, netdev->addr_len);
-
-	hash = (crc >> 27);
-	hash <<= 3;
-	hash |= crc & 7;
-	hash &= 0xff;
-
-	return hash;
-}
-
-/**
- * spider_net_set_multi - sets multicast addresses and promisc flags
- * @netdev: interface device structure
- *
- * spider_net_set_multi configures multicast addresses as needed for the
- * netdev interface. It also sets up multicast, allmulti and promisc
- * flags appropriately
- */
-static void
-spider_net_set_multi(struct net_device *netdev)
-{
-	struct netdev_hw_addr *ha;
-	u8 hash;
-	int i;
-	u32 reg;
-	struct spider_net_card *card = netdev_priv(netdev);
-	unsigned long bitmask[SPIDER_NET_MULTICAST_HASHES / BITS_PER_LONG] =
-		{0, };
-
-	spider_net_set_promisc(card);
-
-	if (netdev->flags & IFF_ALLMULTI) {
-		for (i = 0; i < SPIDER_NET_MULTICAST_HASHES; i++) {
-			set_bit(i, bitmask);
-		}
-		goto write_hash;
-	}
-
-	/* well, we know, what the broadcast hash value is: it's xfd
-	hash = spider_net_get_multicast_hash(netdev, netdev->broadcast); */
-	set_bit(0xfd, bitmask);
-
-	netdev_for_each_mc_addr(ha, netdev) {
-		hash = spider_net_get_multicast_hash(netdev, ha->addr);
-		set_bit(hash, bitmask);
-	}
-
-write_hash:
-	for (i = 0; i < SPIDER_NET_MULTICAST_HASHES / 4; i++) {
-		reg = 0;
-		if (test_bit(i * 4, bitmask))
-			reg += 0x08;
-		reg <<= 8;
-		if (test_bit(i * 4 + 1, bitmask))
-			reg += 0x08;
-		reg <<= 8;
-		if (test_bit(i * 4 + 2, bitmask))
-			reg += 0x08;
-		reg <<= 8;
-		if (test_bit(i * 4 + 3, bitmask))
-			reg += 0x08;
-
-		spider_net_write_reg(card, SPIDER_NET_GMRMHFILnR + i * 4, reg);
-	}
-}
-
-/**
- * spider_net_prepare_tx_descr - fill tx descriptor with skb data
- * @card: card structure
- * @skb: packet to use
- *
- * returns 0 on success, <0 on failure.
- *
- * fills out the descriptor structure with skb data and len. Copies data,
- * if needed (32bit DMA!)
- */
-static int
-spider_net_prepare_tx_descr(struct spider_net_card *card,
-			    struct sk_buff *skb)
-{
-	struct spider_net_descr_chain *chain = &card->tx_chain;
-	struct spider_net_descr *descr;
-	struct spider_net_hw_descr *hwdescr;
-	dma_addr_t buf;
-	unsigned long flags;
-
-	buf = pci_map_single(card->pdev, skb->data, skb->len, PCI_DMA_TODEVICE);
-	if (pci_dma_mapping_error(card->pdev, buf)) {
-		if (netif_msg_tx_err(card) && net_ratelimit())
-			dev_err(&card->netdev->dev, "could not iommu-map packet (%p, %i). "
-				  "Dropping packet\n", skb->data, skb->len);
-		card->spider_stats.tx_iommu_map_error++;
-		return -ENOMEM;
-	}
-
-	spin_lock_irqsave(&chain->lock, flags);
-	descr = card->tx_chain.head;
-	if (descr->next == chain->tail->prev) {
-		spin_unlock_irqrestore(&chain->lock, flags);
-		pci_unmap_single(card->pdev, buf, skb->len, PCI_DMA_TODEVICE);
-		return -ENOMEM;
-	}
-	hwdescr = descr->hwdescr;
-	chain->head = descr->next;
-
-	descr->skb = skb;
-	hwdescr->buf_addr = buf;
-	hwdescr->buf_size = skb->len;
-	hwdescr->next_descr_addr = 0;
-	hwdescr->data_status = 0;
-
-	hwdescr->dmac_cmd_status =
-			SPIDER_NET_DESCR_CARDOWNED | SPIDER_NET_DMAC_TXFRMTL;
-	spin_unlock_irqrestore(&chain->lock, flags);
-
-	if (skb->ip_summed == CHECKSUM_PARTIAL)
-		switch (ip_hdr(skb)->protocol) {
-		case IPPROTO_TCP:
-			hwdescr->dmac_cmd_status |= SPIDER_NET_DMAC_TCP;
-			break;
-		case IPPROTO_UDP:
-			hwdescr->dmac_cmd_status |= SPIDER_NET_DMAC_UDP;
-			break;
-		}
-
-	/* Chain the bus address, so that the DMA engine finds this descr. */
-	wmb();
-	descr->prev->hwdescr->next_descr_addr = descr->bus_addr;
-
-	card->netdev->trans_start = jiffies; /* set netdev watchdog timer */
-	return 0;
-}
-
-static int
-spider_net_set_low_watermark(struct spider_net_card *card)
-{
-	struct spider_net_descr *descr = card->tx_chain.tail;
-	struct spider_net_hw_descr *hwdescr;
-	unsigned long flags;
-	int status;
-	int cnt=0;
-	int i;
-
-	/* Measure the length of the queue. Measurement does not
-	 * need to be precise -- does not need a lock. */
-	while (descr != card->tx_chain.head) {
-		status = descr->hwdescr->dmac_cmd_status & SPIDER_NET_DESCR_NOT_IN_USE;
-		if (status == SPIDER_NET_DESCR_NOT_IN_USE)
-			break;
-		descr = descr->next;
-		cnt++;
-	}
-
-	/* If TX queue is short, don't even bother with interrupts */
-	if (cnt < card->tx_chain.num_desc/4)
-		return cnt;
-
-	/* Set low-watermark 3/4th's of the way into the queue. */
-	descr = card->tx_chain.tail;
-	cnt = (cnt*3)/4;
-	for (i=0;i<cnt; i++)
-		descr = descr->next;
-
-	/* Set the new watermark, clear the old watermark */
-	spin_lock_irqsave(&card->tx_chain.lock, flags);
-	descr->hwdescr->dmac_cmd_status |= SPIDER_NET_DESCR_TXDESFLG;
-	if (card->low_watermark && card->low_watermark != descr) {
-		hwdescr = card->low_watermark->hwdescr;
-		hwdescr->dmac_cmd_status =
-		     hwdescr->dmac_cmd_status & ~SPIDER_NET_DESCR_TXDESFLG;
-	}
-	card->low_watermark = descr;
-	spin_unlock_irqrestore(&card->tx_chain.lock, flags);
-	return cnt;
-}
-
-/**
- * spider_net_release_tx_chain - processes sent tx descriptors
- * @card: adapter structure
- * @brutal: if set, don't care about whether descriptor seems to be in use
- *
- * returns 0 if the tx ring is empty, otherwise 1.
- *
- * spider_net_release_tx_chain releases the tx descriptors that spider has
- * finished with (if non-brutal) or simply release tx descriptors (if brutal).
- * If some other context is calling this function, we return 1 so that we're
- * scheduled again (if we were scheduled) and will not lose initiative.
- */
-static int
-spider_net_release_tx_chain(struct spider_net_card *card, int brutal)
-{
-	struct net_device *dev = card->netdev;
-	struct spider_net_descr_chain *chain = &card->tx_chain;
-	struct spider_net_descr *descr;
-	struct spider_net_hw_descr *hwdescr;
-	struct sk_buff *skb;
-	u32 buf_addr;
-	unsigned long flags;
-	int status;
-
-	while (1) {
-		spin_lock_irqsave(&chain->lock, flags);
-		if (chain->tail == chain->head) {
-			spin_unlock_irqrestore(&chain->lock, flags);
-			return 0;
-		}
-		descr = chain->tail;
-		hwdescr = descr->hwdescr;
-
-		status = spider_net_get_descr_status(hwdescr);
-		switch (status) {
-		case SPIDER_NET_DESCR_COMPLETE:
-			dev->stats.tx_packets++;
-			dev->stats.tx_bytes += descr->skb->len;
-			break;
-
-		case SPIDER_NET_DESCR_CARDOWNED:
-			if (!brutal) {
-				spin_unlock_irqrestore(&chain->lock, flags);
-				return 1;
-			}
-
-			/* fallthrough, if we release the descriptors
-			 * brutally (then we don't care about
-			 * SPIDER_NET_DESCR_CARDOWNED) */
-
-		case SPIDER_NET_DESCR_RESPONSE_ERROR:
-		case SPIDER_NET_DESCR_PROTECTION_ERROR:
-		case SPIDER_NET_DESCR_FORCE_END:
-			if (netif_msg_tx_err(card))
-				dev_err(&card->netdev->dev, "forcing end of tx descriptor "
-				       "with status x%02x\n", status);
-			dev->stats.tx_errors++;
-			break;
-
-		default:
-			dev->stats.tx_dropped++;
-			if (!brutal) {
-				spin_unlock_irqrestore(&chain->lock, flags);
-				return 1;
-			}
-		}
-
-		chain->tail = descr->next;
-		hwdescr->dmac_cmd_status |= SPIDER_NET_DESCR_NOT_IN_USE;
-		skb = descr->skb;
-		descr->skb = NULL;
-		buf_addr = hwdescr->buf_addr;
-		spin_unlock_irqrestore(&chain->lock, flags);
-
-		/* unmap the skb */
-		if (skb) {
-			pci_unmap_single(card->pdev, buf_addr, skb->len,
-					PCI_DMA_TODEVICE);
-			dev_kfree_skb(skb);
-		}
-	}
-	return 0;
-}
-
-/**
- * spider_net_kick_tx_dma - enables TX DMA processing
- * @card: card structure
- *
- * This routine will start the transmit DMA running if
- * it is not already running. This routine ned only be
- * called when queueing a new packet to an empty tx queue.
- * Writes the current tx chain head as start address
- * of the tx descriptor chain and enables the transmission
- * DMA engine.
- */
-static inline void
-spider_net_kick_tx_dma(struct spider_net_card *card)
-{
-	struct spider_net_descr *descr;
-
-	if (spider_net_read_reg(card, SPIDER_NET_GDTDMACCNTR) &
-			SPIDER_NET_TX_DMA_EN)
-		goto out;
-
-	descr = card->tx_chain.tail;
-	for (;;) {
-		if (spider_net_get_descr_status(descr->hwdescr) ==
-				SPIDER_NET_DESCR_CARDOWNED) {
-			spider_net_write_reg(card, SPIDER_NET_GDTDCHA,
-					descr->bus_addr);
-			spider_net_write_reg(card, SPIDER_NET_GDTDMACCNTR,
-					SPIDER_NET_DMA_TX_VALUE);
-			break;
-		}
-		if (descr == card->tx_chain.head)
-			break;
-		descr = descr->next;
-	}
-
-out:
-	mod_timer(&card->tx_timer, jiffies + SPIDER_NET_TX_TIMER);
-}
-
-/**
- * spider_net_xmit - transmits a frame over the device
- * @skb: packet to send out
- * @netdev: interface device structure
- *
- * returns 0 on success, !0 on failure
- */
-static int
-spider_net_xmit(struct sk_buff *skb, struct net_device *netdev)
-{
-	int cnt;
-	struct spider_net_card *card = netdev_priv(netdev);
-
-	spider_net_release_tx_chain(card, 0);
-
-	if (spider_net_prepare_tx_descr(card, skb) != 0) {
-		netdev->stats.tx_dropped++;
-		netif_stop_queue(netdev);
-		return NETDEV_TX_BUSY;
-	}
-
-	cnt = spider_net_set_low_watermark(card);
-	if (cnt < 5)
-		spider_net_kick_tx_dma(card);
-	return NETDEV_TX_OK;
-}
-
-/**
- * spider_net_cleanup_tx_ring - cleans up the TX ring
- * @card: card structure
- *
- * spider_net_cleanup_tx_ring is called by either the tx_timer
- * or from the NAPI polling routine.
- * This routine releases resources associted with transmitted
- * packets, including updating the queue tail pointer.
- */
-static void
-spider_net_cleanup_tx_ring(struct spider_net_card *card)
-{
-	if ((spider_net_release_tx_chain(card, 0) != 0) &&
-	    (card->netdev->flags & IFF_UP)) {
-		spider_net_kick_tx_dma(card);
-		netif_wake_queue(card->netdev);
-	}
-}
-
-/**
- * spider_net_do_ioctl - called for device ioctls
- * @netdev: interface device structure
- * @ifr: request parameter structure for ioctl
- * @cmd: command code for ioctl
- *
- * returns 0 on success, <0 on failure. Currently, we have no special ioctls.
- * -EOPNOTSUPP is returned, if an unknown ioctl was requested
- */
-static int
-spider_net_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
-{
-	switch (cmd) {
-	default:
-		return -EOPNOTSUPP;
-	}
-}
-
-/**
- * spider_net_pass_skb_up - takes an skb from a descriptor and passes it on
- * @descr: descriptor to process
- * @card: card structure
- *
- * Fills out skb structure and passes the data to the stack.
- * The descriptor state is not changed.
- */
-static void
-spider_net_pass_skb_up(struct spider_net_descr *descr,
-		       struct spider_net_card *card)
-{
-	struct spider_net_hw_descr *hwdescr = descr->hwdescr;
-	struct sk_buff *skb = descr->skb;
-	struct net_device *netdev = card->netdev;
-	u32 data_status = hwdescr->data_status;
-	u32 data_error = hwdescr->data_error;
-
-	skb_put(skb, hwdescr->valid_size);
-
-	/* the card seems to add 2 bytes of junk in front
-	 * of the ethernet frame */
-#define SPIDER_MISALIGN		2
-	skb_pull(skb, SPIDER_MISALIGN);
-	skb->protocol = eth_type_trans(skb, netdev);
-
-	/* checksum offload */
-	skb_checksum_none_assert(skb);
-	if (netdev->features & NETIF_F_RXCSUM) {
-		if ( ( (data_status & SPIDER_NET_DATA_STATUS_CKSUM_MASK) ==
-		       SPIDER_NET_DATA_STATUS_CKSUM_MASK) &&
-		     !(data_error & SPIDER_NET_DATA_ERR_CKSUM_MASK))
-			skb->ip_summed = CHECKSUM_UNNECESSARY;
-	}
-
-	if (data_status & SPIDER_NET_VLAN_PACKET) {
-		/* further enhancements: HW-accel VLAN */
-	}
-
-	/* update netdevice statistics */
-	netdev->stats.rx_packets++;
-	netdev->stats.rx_bytes += skb->len;
-
-	/* pass skb up to stack */
-	netif_receive_skb(skb);
-}
-
-static void show_rx_chain(struct spider_net_card *card)
-{
-	struct spider_net_descr_chain *chain = &card->rx_chain;
-	struct spider_net_descr *start= chain->tail;
-	struct spider_net_descr *descr= start;
-	struct spider_net_hw_descr *hwd = start->hwdescr;
-	struct device *dev = &card->netdev->dev;
-	u32 curr_desc, next_desc;
-	int status;
-
-	int tot = 0;
-	int cnt = 0;
-	int off = start - chain->ring;
-	int cstat = hwd->dmac_cmd_status;
-
-	dev_info(dev, "Total number of descrs=%d\n",
-		chain->num_desc);
-	dev_info(dev, "Chain tail located at descr=%d, status=0x%x\n",
-		off, cstat);
-
-	curr_desc = spider_net_read_reg(card, SPIDER_NET_GDACTDPA);
-	next_desc = spider_net_read_reg(card, SPIDER_NET_GDACNEXTDA);
-
-	status = cstat;
-	do
-	{
-		hwd = descr->hwdescr;
-		off = descr - chain->ring;
-		status = hwd->dmac_cmd_status;
-
-		if (descr == chain->head)
-			dev_info(dev, "Chain head is at %d, head status=0x%x\n",
-			         off, status);
-
-		if (curr_desc == descr->bus_addr)
-			dev_info(dev, "HW curr desc (GDACTDPA) is at %d, status=0x%x\n",
-			         off, status);
-
-		if (next_desc == descr->bus_addr)
-			dev_info(dev, "HW next desc (GDACNEXTDA) is at %d, status=0x%x\n",
-			         off, status);
-
-		if (hwd->next_descr_addr == 0)
-			dev_info(dev, "chain is cut at %d\n", off);
-
-		if (cstat != status) {
-			int from = (chain->num_desc + off - cnt) % chain->num_desc;
-			int to = (chain->num_desc + off - 1) % chain->num_desc;
-			dev_info(dev, "Have %d (from %d to %d) descrs "
-			         "with stat=0x%08x\n", cnt, from, to, cstat);
-			cstat = status;
-			cnt = 0;
-		}
-
-		cnt ++;
-		tot ++;
-		descr = descr->next;
-	} while (descr != start);
-
-	dev_info(dev, "Last %d descrs with stat=0x%08x "
-	         "for a total of %d descrs\n", cnt, cstat, tot);
-
-#ifdef DEBUG
-	/* Now dump the whole ring */
-	descr = start;
-	do
-	{
-		struct spider_net_hw_descr *hwd = descr->hwdescr;
-		status = spider_net_get_descr_status(hwd);
-		cnt = descr - chain->ring;
-		dev_info(dev, "Descr %d stat=0x%08x skb=%p\n",
-		         cnt, status, descr->skb);
-		dev_info(dev, "bus addr=%08x buf addr=%08x sz=%d\n",
-		         descr->bus_addr, hwd->buf_addr, hwd->buf_size);
-		dev_info(dev, "next=%08x result sz=%d valid sz=%d\n",
-		         hwd->next_descr_addr, hwd->result_size,
-		         hwd->valid_size);
-		dev_info(dev, "dmac=%08x data stat=%08x data err=%08x\n",
-		         hwd->dmac_cmd_status, hwd->data_status,
-		         hwd->data_error);
-		dev_info(dev, "\n");
-
-		descr = descr->next;
-	} while (descr != start);
-#endif
-
-}
-
-/**
- * spider_net_resync_head_ptr - Advance head ptr past empty descrs
- *
- * If the driver fails to keep up and empty the queue, then the
- * hardware wil run out of room to put incoming packets. This
- * will cause the hardware to skip descrs that are full (instead
- * of halting/retrying). Thus, once the driver runs, it wil need
- * to "catch up" to where the hardware chain pointer is at.
- */
-static void spider_net_resync_head_ptr(struct spider_net_card *card)
-{
-	unsigned long flags;
-	struct spider_net_descr_chain *chain = &card->rx_chain;
-	struct spider_net_descr *descr;
-	int i, status;
-
-	/* Advance head pointer past any empty descrs */
-	descr = chain->head;
-	status = spider_net_get_descr_status(descr->hwdescr);
-
-	if (status == SPIDER_NET_DESCR_NOT_IN_USE)
-		return;
-
-	spin_lock_irqsave(&chain->lock, flags);
-
-	descr = chain->head;
-	status = spider_net_get_descr_status(descr->hwdescr);
-	for (i=0; i<chain->num_desc; i++) {
-		if (status != SPIDER_NET_DESCR_CARDOWNED) break;
-		descr = descr->next;
-		status = spider_net_get_descr_status(descr->hwdescr);
-	}
-	chain->head = descr;
-
-	spin_unlock_irqrestore(&chain->lock, flags);
-}
-
-static int spider_net_resync_tail_ptr(struct spider_net_card *card)
-{
-	struct spider_net_descr_chain *chain = &card->rx_chain;
-	struct spider_net_descr *descr;
-	int i, status;
-
-	/* Advance tail pointer past any empty and reaped descrs */
-	descr = chain->tail;
-	status = spider_net_get_descr_status(descr->hwdescr);
-
-	for (i=0; i<chain->num_desc; i++) {
-		if ((status != SPIDER_NET_DESCR_CARDOWNED) &&
-		    (status != SPIDER_NET_DESCR_NOT_IN_USE)) break;
-		descr = descr->next;
-		status = spider_net_get_descr_status(descr->hwdescr);
-	}
-	chain->tail = descr;
-
-	if ((i == chain->num_desc) || (i == 0))
-		return 1;
-	return 0;
-}
-
-/**
- * spider_net_decode_one_descr - processes an RX descriptor
- * @card: card structure
- *
- * Returns 1 if a packet has been sent to the stack, otherwise 0.
- *
- * Processes an RX descriptor by iommu-unmapping the data buffer
- * and passing the packet up to the stack. This function is called
- * in softirq context, e.g. either bottom half from interrupt or
- * NAPI polling context.
- */
-static int
-spider_net_decode_one_descr(struct spider_net_card *card)
-{
-	struct net_device *dev = card->netdev;
-	struct spider_net_descr_chain *chain = &card->rx_chain;
-	struct spider_net_descr *descr = chain->tail;
-	struct spider_net_hw_descr *hwdescr = descr->hwdescr;
-	u32 hw_buf_addr;
-	int status;
-
-	status = spider_net_get_descr_status(hwdescr);
-
-	/* Nothing in the descriptor, or ring must be empty */
-	if ((status == SPIDER_NET_DESCR_CARDOWNED) ||
-	    (status == SPIDER_NET_DESCR_NOT_IN_USE))
-		return 0;
-
-	/* descriptor definitively used -- move on tail */
-	chain->tail = descr->next;
-
-	/* unmap descriptor */
-	hw_buf_addr = hwdescr->buf_addr;
-	hwdescr->buf_addr = 0xffffffff;
-	pci_unmap_single(card->pdev, hw_buf_addr,
-			SPIDER_NET_MAX_FRAME, PCI_DMA_FROMDEVICE);
-
-	if ( (status == SPIDER_NET_DESCR_RESPONSE_ERROR) ||
-	     (status == SPIDER_NET_DESCR_PROTECTION_ERROR) ||
-	     (status == SPIDER_NET_DESCR_FORCE_END) ) {
-		if (netif_msg_rx_err(card))
-			dev_err(&dev->dev,
-			       "dropping RX descriptor with state %d\n", status);
-		dev->stats.rx_dropped++;
-		goto bad_desc;
-	}
-
-	if ( (status != SPIDER_NET_DESCR_COMPLETE) &&
-	     (status != SPIDER_NET_DESCR_FRAME_END) ) {
-		if (netif_msg_rx_err(card))
-			dev_err(&card->netdev->dev,
-			       "RX descriptor with unknown state %d\n", status);
-		card->spider_stats.rx_desc_unk_state++;
-		goto bad_desc;
-	}
-
-	/* The cases we'll throw away the packet immediately */
-	if (hwdescr->data_error & SPIDER_NET_DESTROY_RX_FLAGS) {
-		if (netif_msg_rx_err(card))
-			dev_err(&card->netdev->dev,
-			       "error in received descriptor found, "
-			       "data_status=x%08x, data_error=x%08x\n",
-			       hwdescr->data_status, hwdescr->data_error);
-		goto bad_desc;
-	}
-
-	if (hwdescr->dmac_cmd_status & SPIDER_NET_DESCR_BAD_STATUS) {
-		dev_err(&card->netdev->dev, "bad status, cmd_status=x%08x\n",
-			       hwdescr->dmac_cmd_status);
-		pr_err("buf_addr=x%08x\n", hw_buf_addr);
-		pr_err("buf_size=x%08x\n", hwdescr->buf_size);
-		pr_err("next_descr_addr=x%08x\n", hwdescr->next_descr_addr);
-		pr_err("result_size=x%08x\n", hwdescr->result_size);
-		pr_err("valid_size=x%08x\n", hwdescr->valid_size);
-		pr_err("data_status=x%08x\n", hwdescr->data_status);
-		pr_err("data_error=x%08x\n", hwdescr->data_error);
-		pr_err("which=%ld\n", descr - card->rx_chain.ring);
-
-		card->spider_stats.rx_desc_error++;
-		goto bad_desc;
-	}
-
-	/* Ok, we've got a packet in descr */
-	spider_net_pass_skb_up(descr, card);
-	descr->skb = NULL;
-	hwdescr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
-	return 1;
-
-bad_desc:
-	if (netif_msg_rx_err(card))
-		show_rx_chain(card);
-	dev_kfree_skb_irq(descr->skb);
-	descr->skb = NULL;
-	hwdescr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
-	return 0;
-}
-
-/**
- * spider_net_poll - NAPI poll function called by the stack to return packets
- * @netdev: interface device structure
- * @budget: number of packets we can pass to the stack at most
- *
- * returns 0 if no more packets available to the driver/stack. Returns 1,
- * if the quota is exceeded, but the driver has still packets.
- *
- * spider_net_poll returns all packets from the rx descriptors to the stack
- * (using netif_receive_skb). If all/enough packets are up, the driver
- * reenables interrupts and returns 0. If not, 1 is returned.
- */
-static int spider_net_poll(struct napi_struct *napi, int budget)
-{
-	struct spider_net_card *card = container_of(napi, struct spider_net_card, napi);
-	int packets_done = 0;
-
-	while (packets_done < budget) {
-		if (!spider_net_decode_one_descr(card))
-			break;
-
-		packets_done++;
-	}
-
-	if ((packets_done == 0) && (card->num_rx_ints != 0)) {
-		if (!spider_net_resync_tail_ptr(card))
-			packets_done = budget;
-		spider_net_resync_head_ptr(card);
-	}
-	card->num_rx_ints = 0;
-
-	spider_net_refill_rx_chain(card);
-	spider_net_enable_rxdmac(card);
-
-	spider_net_cleanup_tx_ring(card);
-
-	/* if all packets are in the stack, enable interrupts and return 0 */
-	/* if not, return 1 */
-	if (packets_done < budget) {
-		napi_complete(napi);
-		spider_net_rx_irq_on(card);
-		card->ignore_rx_ramfull = 0;
-	}
-
-	return packets_done;
-}
-
-/**
- * spider_net_change_mtu - changes the MTU of an interface
- * @netdev: interface device structure
- * @new_mtu: new MTU value
- *
- * returns 0 on success, <0 on failure
- */
-static int
-spider_net_change_mtu(struct net_device *netdev, int new_mtu)
-{
-	/* no need to re-alloc skbs or so -- the max mtu is about 2.3k
-	 * and mtu is outbound only anyway */
-	if ( (new_mtu < SPIDER_NET_MIN_MTU ) ||
-		(new_mtu > SPIDER_NET_MAX_MTU) )
-		return -EINVAL;
-	netdev->mtu = new_mtu;
-	return 0;
-}
-
-/**
- * spider_net_set_mac - sets the MAC of an interface
- * @netdev: interface device structure
- * @ptr: pointer to new MAC address
- *
- * Returns 0 on success, <0 on failure. Currently, we don't support this
- * and will always return EOPNOTSUPP.
- */
-static int
-spider_net_set_mac(struct net_device *netdev, void *p)
-{
-	struct spider_net_card *card = netdev_priv(netdev);
-	u32 macl, macu, regvalue;
-	struct sockaddr *addr = p;
-
-	if (!is_valid_ether_addr(addr->sa_data))
-		return -EADDRNOTAVAIL;
-
-	/* switch off GMACTPE and GMACRPE */
-	regvalue = spider_net_read_reg(card, SPIDER_NET_GMACOPEMD);
-	regvalue &= ~((1 << 5) | (1 << 6));
-	spider_net_write_reg(card, SPIDER_NET_GMACOPEMD, regvalue);
-
-	/* write mac */
-	macu = (addr->sa_data[0]<<24) + (addr->sa_data[1]<<16) +
-		(addr->sa_data[2]<<8) + (addr->sa_data[3]);
-	macl = (addr->sa_data[4]<<8) + (addr->sa_data[5]);
-	spider_net_write_reg(card, SPIDER_NET_GMACUNIMACU, macu);
-	spider_net_write_reg(card, SPIDER_NET_GMACUNIMACL, macl);
-
-	/* switch GMACTPE and GMACRPE back on */
-	regvalue = spider_net_read_reg(card, SPIDER_NET_GMACOPEMD);
-	regvalue |= ((1 << 5) | (1 << 6));
-	spider_net_write_reg(card, SPIDER_NET_GMACOPEMD, regvalue);
-
-	spider_net_set_promisc(card);
-
-	/* look up, whether we have been successful */
-	if (spider_net_get_mac_address(netdev))
-		return -EADDRNOTAVAIL;
-	if (memcmp(netdev->dev_addr,addr->sa_data,netdev->addr_len))
-		return -EADDRNOTAVAIL;
-
-	return 0;
-}
-
-/**
- * spider_net_link_reset
- * @netdev: net device structure
- *
- * This is called when the PHY_LINK signal is asserted. For the blade this is
- * not connected so we should never get here.
- *
- */
-static void
-spider_net_link_reset(struct net_device *netdev)
-{
-
-	struct spider_net_card *card = netdev_priv(netdev);
-
-	del_timer_sync(&card->aneg_timer);
-
-	/* clear interrupt, block further interrupts */
-	spider_net_write_reg(card, SPIDER_NET_GMACST,
-			     spider_net_read_reg(card, SPIDER_NET_GMACST));
-	spider_net_write_reg(card, SPIDER_NET_GMACINTEN, 0);
-
-	/* reset phy and setup aneg */
-	card->aneg_count = 0;
-	card->medium = BCM54XX_COPPER;
-	spider_net_setup_aneg(card);
-	mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
-
-}
-
-/**
- * spider_net_handle_error_irq - handles errors raised by an interrupt
- * @card: card structure
- * @status_reg: interrupt status register 0 (GHIINT0STS)
- *
- * spider_net_handle_error_irq treats or ignores all error conditions
- * found when an interrupt is presented
- */
-static void
-spider_net_handle_error_irq(struct spider_net_card *card, u32 status_reg,
-			    u32 error_reg1, u32 error_reg2)
-{
-	u32 i;
-	int show_error = 1;
-
-	/* check GHIINT0STS ************************************/
-	if (status_reg)
-		for (i = 0; i < 32; i++)
-			if (status_reg & (1<<i))
-				switch (i)
-	{
-	/* let error_reg1 and error_reg2 evaluation decide, what to do
-	case SPIDER_NET_PHYINT:
-	case SPIDER_NET_GMAC2INT:
-	case SPIDER_NET_GMAC1INT:
-	case SPIDER_NET_GFIFOINT:
-	case SPIDER_NET_DMACINT:
-	case SPIDER_NET_GSYSINT:
-		break; */
-
-	case SPIDER_NET_GIPSINT:
-		show_error = 0;
-		break;
-
-	case SPIDER_NET_GPWOPCMPINT:
-		/* PHY write operation completed */
-		show_error = 0;
-		break;
-	case SPIDER_NET_GPROPCMPINT:
-		/* PHY read operation completed */
-		/* we don't use semaphores, as we poll for the completion
-		 * of the read operation in spider_net_read_phy. Should take
-		 * about 50 us */
-		show_error = 0;
-		break;
-	case SPIDER_NET_GPWFFINT:
-		/* PHY command queue full */
-		if (netif_msg_intr(card))
-			dev_err(&card->netdev->dev, "PHY write queue full\n");
-		show_error = 0;
-		break;
-
-	/* case SPIDER_NET_GRMDADRINT: not used. print a message */
-	/* case SPIDER_NET_GRMARPINT: not used. print a message */
-	/* case SPIDER_NET_GRMMPINT: not used. print a message */
-
-	case SPIDER_NET_GDTDEN0INT:
-		/* someone has set TX_DMA_EN to 0 */
-		show_error = 0;
-		break;
-
-	case SPIDER_NET_GDDDEN0INT: /* fallthrough */
-	case SPIDER_NET_GDCDEN0INT: /* fallthrough */
-	case SPIDER_NET_GDBDEN0INT: /* fallthrough */
-	case SPIDER_NET_GDADEN0INT:
-		/* someone has set RX_DMA_EN to 0 */
-		show_error = 0;
-		break;
-
-	/* RX interrupts */
-	case SPIDER_NET_GDDFDCINT:
-	case SPIDER_NET_GDCFDCINT:
-	case SPIDER_NET_GDBFDCINT:
-	case SPIDER_NET_GDAFDCINT:
-	/* case SPIDER_NET_GDNMINT: not used. print a message */
-	/* case SPIDER_NET_GCNMINT: not used. print a message */
-	/* case SPIDER_NET_GBNMINT: not used. print a message */
-	/* case SPIDER_NET_GANMINT: not used. print a message */
-	/* case SPIDER_NET_GRFNMINT: not used. print a message */
-		show_error = 0;
-		break;
-
-	/* TX interrupts */
-	case SPIDER_NET_GDTFDCINT:
-		show_error = 0;
-		break;
-	case SPIDER_NET_GTTEDINT:
-		show_error = 0;
-		break;
-	case SPIDER_NET_GDTDCEINT:
-		/* chain end. If a descriptor should be sent, kick off
-		 * tx dma
-		if (card->tx_chain.tail != card->tx_chain.head)
-			spider_net_kick_tx_dma(card);
-		*/
-		show_error = 0;
-		break;
-
-	/* case SPIDER_NET_G1TMCNTINT: not used. print a message */
-	/* case SPIDER_NET_GFREECNTINT: not used. print a message */
-	}
-
-	/* check GHIINT1STS ************************************/
-	if (error_reg1)
-		for (i = 0; i < 32; i++)
-			if (error_reg1 & (1<<i))
-				switch (i)
-	{
-	case SPIDER_NET_GTMFLLINT:
-		/* TX RAM full may happen on a usual case.
-		 * Logging is not needed. */
-		show_error = 0;
-		break;
-	case SPIDER_NET_GRFDFLLINT: /* fallthrough */
-	case SPIDER_NET_GRFCFLLINT: /* fallthrough */
-	case SPIDER_NET_GRFBFLLINT: /* fallthrough */
-	case SPIDER_NET_GRFAFLLINT: /* fallthrough */
-	case SPIDER_NET_GRMFLLINT:
-		/* Could happen when rx chain is full */
-		if (card->ignore_rx_ramfull == 0) {
-			card->ignore_rx_ramfull = 1;
-			spider_net_resync_head_ptr(card);
-			spider_net_refill_rx_chain(card);
-			spider_net_enable_rxdmac(card);
-			card->num_rx_ints ++;
-			napi_schedule(&card->napi);
-		}
-		show_error = 0;
-		break;
-
-	/* case SPIDER_NET_GTMSHTINT: problem, print a message */
-	case SPIDER_NET_GDTINVDINT:
-		/* allrighty. tx from previous descr ok */
-		show_error = 0;
-		break;
-
-	/* chain end */
-	case SPIDER_NET_GDDDCEINT: /* fallthrough */
-	case SPIDER_NET_GDCDCEINT: /* fallthrough */
-	case SPIDER_NET_GDBDCEINT: /* fallthrough */
-	case SPIDER_NET_GDADCEINT:
-		spider_net_resync_head_ptr(card);
-		spider_net_refill_rx_chain(card);
-		spider_net_enable_rxdmac(card);
-		card->num_rx_ints ++;
-		napi_schedule(&card->napi);
-		show_error = 0;
-		break;
-
-	/* invalid descriptor */
-	case SPIDER_NET_GDDINVDINT: /* fallthrough */
-	case SPIDER_NET_GDCINVDINT: /* fallthrough */
-	case SPIDER_NET_GDBINVDINT: /* fallthrough */
-	case SPIDER_NET_GDAINVDINT:
-		/* Could happen when rx chain is full */
-		spider_net_resync_head_ptr(card);
-		spider_net_refill_rx_chain(card);
-		spider_net_enable_rxdmac(card);
-		card->num_rx_ints ++;
-		napi_schedule(&card->napi);
-		show_error = 0;
-		break;
-
-	/* case SPIDER_NET_GDTRSERINT: problem, print a message */
-	/* case SPIDER_NET_GDDRSERINT: problem, print a message */
-	/* case SPIDER_NET_GDCRSERINT: problem, print a message */
-	/* case SPIDER_NET_GDBRSERINT: problem, print a message */
-	/* case SPIDER_NET_GDARSERINT: problem, print a message */
-	/* case SPIDER_NET_GDSERINT: problem, print a message */
-	/* case SPIDER_NET_GDTPTERINT: problem, print a message */
-	/* case SPIDER_NET_GDDPTERINT: problem, print a message */
-	/* case SPIDER_NET_GDCPTERINT: problem, print a message */
-	/* case SPIDER_NET_GDBPTERINT: problem, print a message */
-	/* case SPIDER_NET_GDAPTERINT: problem, print a message */
-	default:
-		show_error = 1;
-		break;
-	}
-
-	/* check GHIINT2STS ************************************/
-	if (error_reg2)
-		for (i = 0; i < 32; i++)
-			if (error_reg2 & (1<<i))
-				switch (i)
-	{
-	/* there is nothing we can (want  to) do at this time. Log a
-	 * message, we can switch on and off the specific values later on
-	case SPIDER_NET_GPROPERINT:
-	case SPIDER_NET_GMCTCRSNGINT:
-	case SPIDER_NET_GMCTLCOLINT:
-	case SPIDER_NET_GMCTTMOTINT:
-	case SPIDER_NET_GMCRCAERINT:
-	case SPIDER_NET_GMCRCALERINT:
-	case SPIDER_NET_GMCRALNERINT:
-	case SPIDER_NET_GMCROVRINT:
-	case SPIDER_NET_GMCRRNTINT:
-	case SPIDER_NET_GMCRRXERINT:
-	case SPIDER_NET_GTITCSERINT:
-	case SPIDER_NET_GTIFMTERINT:
-	case SPIDER_NET_GTIPKTRVKINT:
-	case SPIDER_NET_GTISPINGINT:
-	case SPIDER_NET_GTISADNGINT:
-	case SPIDER_NET_GTISPDNGINT:
-	case SPIDER_NET_GRIFMTERINT:
-	case SPIDER_NET_GRIPKTRVKINT:
-	case SPIDER_NET_GRISPINGINT:
-	case SPIDER_NET_GRISADNGINT:
-	case SPIDER_NET_GRISPDNGINT:
-		break;
-	*/
-		default:
-			break;
-	}
-
-	if ((show_error) && (netif_msg_intr(card)) && net_ratelimit())
-		dev_err(&card->netdev->dev, "Error interrupt, GHIINT0STS = 0x%08x, "
-		       "GHIINT1STS = 0x%08x, GHIINT2STS = 0x%08x\n",
-		       status_reg, error_reg1, error_reg2);
-
-	/* clear interrupt sources */
-	spider_net_write_reg(card, SPIDER_NET_GHIINT1STS, error_reg1);
-	spider_net_write_reg(card, SPIDER_NET_GHIINT2STS, error_reg2);
-}
-
-/**
- * spider_net_interrupt - interrupt handler for spider_net
- * @irq: interrupt number
- * @ptr: pointer to net_device
- *
- * returns IRQ_HANDLED, if interrupt was for driver, or IRQ_NONE, if no
- * interrupt found raised by card.
- *
- * This is the interrupt handler, that turns off
- * interrupts for this device and makes the stack poll the driver
- */
-static irqreturn_t
-spider_net_interrupt(int irq, void *ptr)
-{
-	struct net_device *netdev = ptr;
-	struct spider_net_card *card = netdev_priv(netdev);
-	u32 status_reg, error_reg1, error_reg2;
-
-	status_reg = spider_net_read_reg(card, SPIDER_NET_GHIINT0STS);
-	error_reg1 = spider_net_read_reg(card, SPIDER_NET_GHIINT1STS);
-	error_reg2 = spider_net_read_reg(card, SPIDER_NET_GHIINT2STS);
-
-	if (!(status_reg & SPIDER_NET_INT0_MASK_VALUE) &&
-	    !(error_reg1 & SPIDER_NET_INT1_MASK_VALUE) &&
-	    !(error_reg2 & SPIDER_NET_INT2_MASK_VALUE))
-		return IRQ_NONE;
-
-	if (status_reg & SPIDER_NET_RXINT ) {
-		spider_net_rx_irq_off(card);
-		napi_schedule(&card->napi);
-		card->num_rx_ints ++;
-	}
-	if (status_reg & SPIDER_NET_TXINT)
-		napi_schedule(&card->napi);
-
-	if (status_reg & SPIDER_NET_LINKINT)
-		spider_net_link_reset(netdev);
-
-	if (status_reg & SPIDER_NET_ERRINT )
-		spider_net_handle_error_irq(card, status_reg,
-					    error_reg1, error_reg2);
-
-	/* clear interrupt sources */
-	spider_net_write_reg(card, SPIDER_NET_GHIINT0STS, status_reg);
-
-	return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/**
- * spider_net_poll_controller - artificial interrupt for netconsole etc.
- * @netdev: interface device structure
- *
- * see Documentation/networking/netconsole.txt
- */
-static void
-spider_net_poll_controller(struct net_device *netdev)
-{
-	disable_irq(netdev->irq);
-	spider_net_interrupt(netdev->irq, netdev);
-	enable_irq(netdev->irq);
-}
-#endif /* CONFIG_NET_POLL_CONTROLLER */
-
-/**
- * spider_net_enable_interrupts - enable interrupts
- * @card: card structure
- *
- * spider_net_enable_interrupt enables several interrupts
- */
-static void
-spider_net_enable_interrupts(struct spider_net_card *card)
-{
-	spider_net_write_reg(card, SPIDER_NET_GHIINT0MSK,
-			     SPIDER_NET_INT0_MASK_VALUE);
-	spider_net_write_reg(card, SPIDER_NET_GHIINT1MSK,
-			     SPIDER_NET_INT1_MASK_VALUE);
-	spider_net_write_reg(card, SPIDER_NET_GHIINT2MSK,
-			     SPIDER_NET_INT2_MASK_VALUE);
-}
-
-/**
- * spider_net_disable_interrupts - disable interrupts
- * @card: card structure
- *
- * spider_net_disable_interrupts disables all the interrupts
- */
-static void
-spider_net_disable_interrupts(struct spider_net_card *card)
-{
-	spider_net_write_reg(card, SPIDER_NET_GHIINT0MSK, 0);
-	spider_net_write_reg(card, SPIDER_NET_GHIINT1MSK, 0);
-	spider_net_write_reg(card, SPIDER_NET_GHIINT2MSK, 0);
-	spider_net_write_reg(card, SPIDER_NET_GMACINTEN, 0);
-}
-
-/**
- * spider_net_init_card - initializes the card
- * @card: card structure
- *
- * spider_net_init_card initializes the card so that other registers can
- * be used
- */
-static void
-spider_net_init_card(struct spider_net_card *card)
-{
-	spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
-			     SPIDER_NET_CKRCTRL_STOP_VALUE);
-
-	spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
-			     SPIDER_NET_CKRCTRL_RUN_VALUE);
-
-	/* trigger ETOMOD signal */
-	spider_net_write_reg(card, SPIDER_NET_GMACOPEMD,
-		spider_net_read_reg(card, SPIDER_NET_GMACOPEMD) | 0x4);
-
-	spider_net_disable_interrupts(card);
-}
-
-/**
- * spider_net_enable_card - enables the card by setting all kinds of regs
- * @card: card structure
- *
- * spider_net_enable_card sets a lot of SMMIO registers to enable the device
- */
-static void
-spider_net_enable_card(struct spider_net_card *card)
-{
-	int i;
-	/* the following array consists of (register),(value) pairs
-	 * that are set in this function. A register of 0 ends the list */
-	u32 regs[][2] = {
-		{ SPIDER_NET_GRESUMINTNUM, 0 },
-		{ SPIDER_NET_GREINTNUM, 0 },
-
-		/* set interrupt frame number registers */
-		/* clear the single DMA engine registers first */
-		{ SPIDER_NET_GFAFRMNUM, SPIDER_NET_GFXFRAMES_VALUE },
-		{ SPIDER_NET_GFBFRMNUM, SPIDER_NET_GFXFRAMES_VALUE },
-		{ SPIDER_NET_GFCFRMNUM, SPIDER_NET_GFXFRAMES_VALUE },
-		{ SPIDER_NET_GFDFRMNUM, SPIDER_NET_GFXFRAMES_VALUE },
-		/* then set, what we really need */
-		{ SPIDER_NET_GFFRMNUM, SPIDER_NET_FRAMENUM_VALUE },
-
-		/* timer counter registers and stuff */
-		{ SPIDER_NET_GFREECNNUM, 0 },
-		{ SPIDER_NET_GONETIMENUM, 0 },
-		{ SPIDER_NET_GTOUTFRMNUM, 0 },
-
-		/* RX mode setting */
-		{ SPIDER_NET_GRXMDSET, SPIDER_NET_RXMODE_VALUE },
-		/* TX mode setting */
-		{ SPIDER_NET_GTXMDSET, SPIDER_NET_TXMODE_VALUE },
-		/* IPSEC mode setting */
-		{ SPIDER_NET_GIPSECINIT, SPIDER_NET_IPSECINIT_VALUE },
-
-		{ SPIDER_NET_GFTRESTRT, SPIDER_NET_RESTART_VALUE },
-
-		{ SPIDER_NET_GMRWOLCTRL, 0 },
-		{ SPIDER_NET_GTESTMD, 0x10000000 },
-		{ SPIDER_NET_GTTQMSK, 0x00400040 },
-
-		{ SPIDER_NET_GMACINTEN, 0 },
-
-		/* flow control stuff */
-		{ SPIDER_NET_GMACAPAUSE, SPIDER_NET_MACAPAUSE_VALUE },
-		{ SPIDER_NET_GMACTXPAUSE, SPIDER_NET_TXPAUSE_VALUE },
-
-		{ SPIDER_NET_GMACBSTLMT, SPIDER_NET_BURSTLMT_VALUE },
-		{ 0, 0}
-	};
-
-	i = 0;
-	while (regs[i][0]) {
-		spider_net_write_reg(card, regs[i][0], regs[i][1]);
-		i++;
-	}
-
-	/* clear unicast filter table entries 1 to 14 */
-	for (i = 1; i <= 14; i++) {
-		spider_net_write_reg(card,
-				     SPIDER_NET_GMRUAFILnR + i * 8,
-				     0x00080000);
-		spider_net_write_reg(card,
-				     SPIDER_NET_GMRUAFILnR + i * 8 + 4,
-				     0x00000000);
-	}
-
-	spider_net_write_reg(card, SPIDER_NET_GMRUA0FIL15R, 0x08080000);
-
-	spider_net_write_reg(card, SPIDER_NET_ECMODE, SPIDER_NET_ECMODE_VALUE);
-
-	/* set chain tail address for RX chains and
-	 * enable DMA */
-	spider_net_enable_rxchtails(card);
-	spider_net_enable_rxdmac(card);
-
-	spider_net_write_reg(card, SPIDER_NET_GRXDMAEN, SPIDER_NET_WOL_VALUE);
-
-	spider_net_write_reg(card, SPIDER_NET_GMACLENLMT,
-			     SPIDER_NET_LENLMT_VALUE);
-	spider_net_write_reg(card, SPIDER_NET_GMACOPEMD,
-			     SPIDER_NET_OPMODE_VALUE);
-
-	spider_net_write_reg(card, SPIDER_NET_GDTDMACCNTR,
-			     SPIDER_NET_GDTBSTA);
-}
-
-/**
- * spider_net_download_firmware - loads firmware into the adapter
- * @card: card structure
- * @firmware_ptr: pointer to firmware data
- *
- * spider_net_download_firmware loads the firmware data into the
- * adapter. It assumes the length etc. to be allright.
- */
-static int
-spider_net_download_firmware(struct spider_net_card *card,
-			     const void *firmware_ptr)
-{
-	int sequencer, i;
-	const u32 *fw_ptr = firmware_ptr;
-
-	/* stop sequencers */
-	spider_net_write_reg(card, SPIDER_NET_GSINIT,
-			     SPIDER_NET_STOP_SEQ_VALUE);
-
-	for (sequencer = 0; sequencer < SPIDER_NET_FIRMWARE_SEQS;
-	     sequencer++) {
-		spider_net_write_reg(card,
-				     SPIDER_NET_GSnPRGADR + sequencer * 8, 0);
-		for (i = 0; i < SPIDER_NET_FIRMWARE_SEQWORDS; i++) {
-			spider_net_write_reg(card, SPIDER_NET_GSnPRGDAT +
-					     sequencer * 8, *fw_ptr);
-			fw_ptr++;
-		}
-	}
-
-	if (spider_net_read_reg(card, SPIDER_NET_GSINIT))
-		return -EIO;
-
-	spider_net_write_reg(card, SPIDER_NET_GSINIT,
-			     SPIDER_NET_RUN_SEQ_VALUE);
-
-	return 0;
-}
-
-/**
- * spider_net_init_firmware - reads in firmware parts
- * @card: card structure
- *
- * Returns 0 on success, <0 on failure
- *
- * spider_net_init_firmware opens the sequencer firmware and does some basic
- * checks. This function opens and releases the firmware structure. A call
- * to download the firmware is performed before the release.
- *
- * Firmware format
- * ===============
- * spider_fw.bin is expected to be a file containing 6*1024*4 bytes, 4k being
- * the program for each sequencer. Use the command
- *    tail -q -n +2 Seq_code1_0x088.txt Seq_code2_0x090.txt              \
- *         Seq_code3_0x098.txt Seq_code4_0x0A0.txt Seq_code5_0x0A8.txt   \
- *         Seq_code6_0x0B0.txt | xxd -r -p -c4 > spider_fw.bin
- *
- * to generate spider_fw.bin, if you have sequencer programs with something
- * like the following contents for each sequencer:
- *    <ONE LINE COMMENT>
- *    <FIRST 4-BYTES-WORD FOR SEQUENCER>
- *    <SECOND 4-BYTES-WORD FOR SEQUENCER>
- *     ...
- *    <1024th 4-BYTES-WORD FOR SEQUENCER>
- */
-static int
-spider_net_init_firmware(struct spider_net_card *card)
-{
-	struct firmware *firmware = NULL;
-	struct device_node *dn;
-	const u8 *fw_prop = NULL;
-	int err = -ENOENT;
-	int fw_size;
-
-	if (request_firmware((const struct firmware **)&firmware,
-			     SPIDER_NET_FIRMWARE_NAME, &card->pdev->dev) == 0) {
-		if ( (firmware->size != SPIDER_NET_FIRMWARE_LEN) &&
-		     netif_msg_probe(card) ) {
-			dev_err(&card->netdev->dev,
-			       "Incorrect size of spidernet firmware in " \
-			       "filesystem. Looking in host firmware...\n");
-			goto try_host_fw;
-		}
-		err = spider_net_download_firmware(card, firmware->data);
-
-		release_firmware(firmware);
-		if (err)
-			goto try_host_fw;
-
-		goto done;
-	}
-
-try_host_fw:
-	dn = pci_device_to_OF_node(card->pdev);
-	if (!dn)
-		goto out_err;
-
-	fw_prop = of_get_property(dn, "firmware", &fw_size);
-	if (!fw_prop)
-		goto out_err;
-
-	if ( (fw_size != SPIDER_NET_FIRMWARE_LEN) &&
-	     netif_msg_probe(card) ) {
-		dev_err(&card->netdev->dev,
-		       "Incorrect size of spidernet firmware in host firmware\n");
-		goto done;
-	}
-
-	err = spider_net_download_firmware(card, fw_prop);
-
-done:
-	return err;
-out_err:
-	if (netif_msg_probe(card))
-		dev_err(&card->netdev->dev,
-		       "Couldn't find spidernet firmware in filesystem " \
-		       "or host firmware\n");
-	return err;
-}
-
-/**
- * spider_net_open - called upon ifonfig up
- * @netdev: interface device structure
- *
- * returns 0 on success, <0 on failure
- *
- * spider_net_open allocates all the descriptors and memory needed for
- * operation, sets up multicast list and enables interrupts
- */
-int
-spider_net_open(struct net_device *netdev)
-{
-	struct spider_net_card *card = netdev_priv(netdev);
-	int result;
-
-	result = spider_net_init_firmware(card);
-	if (result)
-		goto init_firmware_failed;
-
-	/* start probing with copper */
-	card->aneg_count = 0;
-	card->medium = BCM54XX_COPPER;
-	spider_net_setup_aneg(card);
-	if (card->phy.def->phy_id)
-		mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
-
-	result = spider_net_init_chain(card, &card->tx_chain);
-	if (result)
-		goto alloc_tx_failed;
-	card->low_watermark = NULL;
-
-	result = spider_net_init_chain(card, &card->rx_chain);
-	if (result)
-		goto alloc_rx_failed;
-
-	/* Allocate rx skbs */
-	if (spider_net_alloc_rx_skbs(card))
-		goto alloc_skbs_failed;
-
-	spider_net_set_multi(netdev);
-
-	/* further enhancement: setup hw vlan, if needed */
-
-	result = -EBUSY;
-	if (request_irq(netdev->irq, spider_net_interrupt,
-			     IRQF_SHARED, netdev->name, netdev))
-		goto register_int_failed;
-
-	spider_net_enable_card(card);
-
-	netif_start_queue(netdev);
-	netif_carrier_on(netdev);
-	napi_enable(&card->napi);
-
-	spider_net_enable_interrupts(card);
-
-	return 0;
-
-register_int_failed:
-	spider_net_free_rx_chain_contents(card);
-alloc_skbs_failed:
-	spider_net_free_chain(card, &card->rx_chain);
-alloc_rx_failed:
-	spider_net_free_chain(card, &card->tx_chain);
-alloc_tx_failed:
-	del_timer_sync(&card->aneg_timer);
-init_firmware_failed:
-	return result;
-}
-
-/**
- * spider_net_link_phy
- * @data: used for pointer to card structure
- *
- */
-static void spider_net_link_phy(unsigned long data)
-{
-	struct spider_net_card *card = (struct spider_net_card *)data;
-	struct mii_phy *phy = &card->phy;
-
-	/* if link didn't come up after SPIDER_NET_ANEG_TIMEOUT tries, setup phy again */
-	if (card->aneg_count > SPIDER_NET_ANEG_TIMEOUT) {
-
-		pr_debug("%s: link is down trying to bring it up\n",
-			 card->netdev->name);
-
-		switch (card->medium) {
-		case BCM54XX_COPPER:
-			/* enable fiber with autonegotiation first */
-			if (phy->def->ops->enable_fiber)
-				phy->def->ops->enable_fiber(phy, 1);
-			card->medium = BCM54XX_FIBER;
-			break;
-
-		case BCM54XX_FIBER:
-			/* fiber didn't come up, try to disable fiber autoneg */
-			if (phy->def->ops->enable_fiber)
-				phy->def->ops->enable_fiber(phy, 0);
-			card->medium = BCM54XX_UNKNOWN;
-			break;
-
-		case BCM54XX_UNKNOWN:
-			/* copper, fiber with and without failed,
-			 * retry from beginning */
-			spider_net_setup_aneg(card);
-			card->medium = BCM54XX_COPPER;
-			break;
-		}
-
-		card->aneg_count = 0;
-		mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
-		return;
-	}
-
-	/* link still not up, try again later */
-	if (!(phy->def->ops->poll_link(phy))) {
-		card->aneg_count++;
-		mod_timer(&card->aneg_timer, jiffies + SPIDER_NET_ANEG_TIMER);
-		return;
-	}
-
-	/* link came up, get abilities */
-	phy->def->ops->read_link(phy);
-
-	spider_net_write_reg(card, SPIDER_NET_GMACST,
-			     spider_net_read_reg(card, SPIDER_NET_GMACST));
-	spider_net_write_reg(card, SPIDER_NET_GMACINTEN, 0x4);
-
-	if (phy->speed == 1000)
-		spider_net_write_reg(card, SPIDER_NET_GMACMODE, 0x00000001);
-	else
-		spider_net_write_reg(card, SPIDER_NET_GMACMODE, 0);
-
-	card->aneg_count = 0;
-
-	pr_info("%s: link up, %i Mbps, %s-duplex %sautoneg.\n",
-		card->netdev->name, phy->speed,
-		phy->duplex == 1 ? "Full" : "Half",
-		phy->autoneg == 1 ? "" : "no ");
-}
-
-/**
- * spider_net_setup_phy - setup PHY
- * @card: card structure
- *
- * returns 0 on success, <0 on failure
- *
- * spider_net_setup_phy is used as part of spider_net_probe.
- **/
-static int
-spider_net_setup_phy(struct spider_net_card *card)
-{
-	struct mii_phy *phy = &card->phy;
-
-	spider_net_write_reg(card, SPIDER_NET_GDTDMASEL,
-			     SPIDER_NET_DMASEL_VALUE);
-	spider_net_write_reg(card, SPIDER_NET_GPCCTRL,
-			     SPIDER_NET_PHY_CTRL_VALUE);
-
-	phy->dev = card->netdev;
-	phy->mdio_read = spider_net_read_phy;
-	phy->mdio_write = spider_net_write_phy;
-
-	for (phy->mii_id = 1; phy->mii_id <= 31; phy->mii_id++) {
-		unsigned short id;
-		id = spider_net_read_phy(card->netdev, phy->mii_id, MII_BMSR);
-		if (id != 0x0000 && id != 0xffff) {
-			if (!mii_phy_probe(phy, phy->mii_id)) {
-				pr_info("Found %s.\n", phy->def->name);
-				break;
-			}
-		}
-	}
-
-	return 0;
-}
-
-/**
- * spider_net_workaround_rxramfull - work around firmware bug
- * @card: card structure
- *
- * no return value
- **/
-static void
-spider_net_workaround_rxramfull(struct spider_net_card *card)
-{
-	int i, sequencer = 0;
-
-	/* cancel reset */
-	spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
-			     SPIDER_NET_CKRCTRL_RUN_VALUE);
-
-	/* empty sequencer data */
-	for (sequencer = 0; sequencer < SPIDER_NET_FIRMWARE_SEQS;
-	     sequencer++) {
-		spider_net_write_reg(card, SPIDER_NET_GSnPRGADR +
-				     sequencer * 8, 0x0);
-		for (i = 0; i < SPIDER_NET_FIRMWARE_SEQWORDS; i++) {
-			spider_net_write_reg(card, SPIDER_NET_GSnPRGDAT +
-					     sequencer * 8, 0x0);
-		}
-	}
-
-	/* set sequencer operation */
-	spider_net_write_reg(card, SPIDER_NET_GSINIT, 0x000000fe);
-
-	/* reset */
-	spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
-			     SPIDER_NET_CKRCTRL_STOP_VALUE);
-}
-
-/**
- * spider_net_stop - called upon ifconfig down
- * @netdev: interface device structure
- *
- * always returns 0
- */
-int
-spider_net_stop(struct net_device *netdev)
-{
-	struct spider_net_card *card = netdev_priv(netdev);
-
-	napi_disable(&card->napi);
-	netif_carrier_off(netdev);
-	netif_stop_queue(netdev);
-	del_timer_sync(&card->tx_timer);
-	del_timer_sync(&card->aneg_timer);
-
-	spider_net_disable_interrupts(card);
-
-	free_irq(netdev->irq, netdev);
-
-	spider_net_write_reg(card, SPIDER_NET_GDTDMACCNTR,
-			     SPIDER_NET_DMA_TX_FEND_VALUE);
-
-	/* turn off DMA, force end */
-	spider_net_disable_rxdmac(card);
-
-	/* release chains */
-	spider_net_release_tx_chain(card, 1);
-	spider_net_free_rx_chain_contents(card);
-
-	spider_net_free_chain(card, &card->tx_chain);
-	spider_net_free_chain(card, &card->rx_chain);
-
-	return 0;
-}
-
-/**
- * spider_net_tx_timeout_task - task scheduled by the watchdog timeout
- * function (to be called not under interrupt status)
- * @data: data, is interface device structure
- *
- * called as task when tx hangs, resets interface (if interface is up)
- */
-static void
-spider_net_tx_timeout_task(struct work_struct *work)
-{
-	struct spider_net_card *card =
-		container_of(work, struct spider_net_card, tx_timeout_task);
-	struct net_device *netdev = card->netdev;
-
-	if (!(netdev->flags & IFF_UP))
-		goto out;
-
-	netif_device_detach(netdev);
-	spider_net_stop(netdev);
-
-	spider_net_workaround_rxramfull(card);
-	spider_net_init_card(card);
-
-	if (spider_net_setup_phy(card))
-		goto out;
-
-	spider_net_open(netdev);
-	spider_net_kick_tx_dma(card);
-	netif_device_attach(netdev);
-
-out:
-	atomic_dec(&card->tx_timeout_task_counter);
-}
-
-/**
- * spider_net_tx_timeout - called when the tx timeout watchdog kicks in.
- * @netdev: interface device structure
- *
- * called, if tx hangs. Schedules a task that resets the interface
- */
-static void
-spider_net_tx_timeout(struct net_device *netdev)
-{
-	struct spider_net_card *card;
-
-	card = netdev_priv(netdev);
-	atomic_inc(&card->tx_timeout_task_counter);
-	if (netdev->flags & IFF_UP)
-		schedule_work(&card->tx_timeout_task);
-	else
-		atomic_dec(&card->tx_timeout_task_counter);
-	card->spider_stats.tx_timeouts++;
-}
-
-static const struct net_device_ops spider_net_ops = {
-	.ndo_open		= spider_net_open,
-	.ndo_stop		= spider_net_stop,
-	.ndo_start_xmit		= spider_net_xmit,
-	.ndo_set_multicast_list	= spider_net_set_multi,
-	.ndo_set_mac_address	= spider_net_set_mac,
-	.ndo_change_mtu		= spider_net_change_mtu,
-	.ndo_do_ioctl		= spider_net_do_ioctl,
-	.ndo_tx_timeout		= spider_net_tx_timeout,
-	.ndo_validate_addr	= eth_validate_addr,
-	/* HW VLAN */
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	/* poll controller */
-	.ndo_poll_controller	= spider_net_poll_controller,
-#endif /* CONFIG_NET_POLL_CONTROLLER */
-};
-
-/**
- * spider_net_setup_netdev_ops - initialization of net_device operations
- * @netdev: net_device structure
- *
- * fills out function pointers in the net_device structure
- */
-static void
-spider_net_setup_netdev_ops(struct net_device *netdev)
-{
-	netdev->netdev_ops = &spider_net_ops;
-	netdev->watchdog_timeo = SPIDER_NET_WATCHDOG_TIMEOUT;
-	/* ethtool ops */
-	netdev->ethtool_ops = &spider_net_ethtool_ops;
-}
-
-/**
- * spider_net_setup_netdev - initialization of net_device
- * @card: card structure
- *
- * Returns 0 on success or <0 on failure
- *
- * spider_net_setup_netdev initializes the net_device structure
- **/
-static int
-spider_net_setup_netdev(struct spider_net_card *card)
-{
-	int result;
-	struct net_device *netdev = card->netdev;
-	struct device_node *dn;
-	struct sockaddr addr;
-	const u8 *mac;
-
-	SET_NETDEV_DEV(netdev, &card->pdev->dev);
-
-	pci_set_drvdata(card->pdev, netdev);
-
-	init_timer(&card->tx_timer);
-	card->tx_timer.function =
-		(void (*)(unsigned long)) spider_net_cleanup_tx_ring;
-	card->tx_timer.data = (unsigned long) card;
-	netdev->irq = card->pdev->irq;
-
-	card->aneg_count = 0;
-	init_timer(&card->aneg_timer);
-	card->aneg_timer.function = spider_net_link_phy;
-	card->aneg_timer.data = (unsigned long) card;
-
-	netif_napi_add(netdev, &card->napi,
-		       spider_net_poll, SPIDER_NET_NAPI_WEIGHT);
-
-	spider_net_setup_netdev_ops(netdev);
-
-	netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
-	if (SPIDER_NET_RX_CSUM_DEFAULT)
-		netdev->features |= NETIF_F_RXCSUM;
-	netdev->features |= NETIF_F_IP_CSUM | NETIF_F_LLTX;
-	/* some time: NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
-	 *		NETIF_F_HW_VLAN_FILTER */
-
-	netdev->irq = card->pdev->irq;
-	card->num_rx_ints = 0;
-	card->ignore_rx_ramfull = 0;
-
-	dn = pci_device_to_OF_node(card->pdev);
-	if (!dn)
-		return -EIO;
-
-	mac = of_get_property(dn, "local-mac-address", NULL);
-	if (!mac)
-		return -EIO;
-	memcpy(addr.sa_data, mac, ETH_ALEN);
-
-	result = spider_net_set_mac(netdev, &addr);
-	if ((result) && (netif_msg_probe(card)))
-		dev_err(&card->netdev->dev,
-		        "Failed to set MAC address: %i\n", result);
-
-	result = register_netdev(netdev);
-	if (result) {
-		if (netif_msg_probe(card))
-			dev_err(&card->netdev->dev,
-			        "Couldn't register net_device: %i\n", result);
-		return result;
-	}
-
-	if (netif_msg_probe(card))
-		pr_info("Initialized device %s.\n", netdev->name);
-
-	return 0;
-}
-
-/**
- * spider_net_alloc_card - allocates net_device and card structure
- *
- * returns the card structure or NULL in case of errors
- *
- * the card and net_device structures are linked to each other
- */
-static struct spider_net_card *
-spider_net_alloc_card(void)
-{
-	struct net_device *netdev;
-	struct spider_net_card *card;
-	size_t alloc_size;
-
-	alloc_size = sizeof(struct spider_net_card) +
-	   (tx_descriptors + rx_descriptors) * sizeof(struct spider_net_descr);
-	netdev = alloc_etherdev(alloc_size);
-	if (!netdev)
-		return NULL;
-
-	card = netdev_priv(netdev);
-	card->netdev = netdev;
-	card->msg_enable = SPIDER_NET_DEFAULT_MSG;
-	INIT_WORK(&card->tx_timeout_task, spider_net_tx_timeout_task);
-	init_waitqueue_head(&card->waitq);
-	atomic_set(&card->tx_timeout_task_counter, 0);
-
-	card->rx_chain.num_desc = rx_descriptors;
-	card->rx_chain.ring = card->darray;
-	card->tx_chain.num_desc = tx_descriptors;
-	card->tx_chain.ring = card->darray + rx_descriptors;
-
-	return card;
-}
-
-/**
- * spider_net_undo_pci_setup - releases PCI ressources
- * @card: card structure
- *
- * spider_net_undo_pci_setup releases the mapped regions
- */
-static void
-spider_net_undo_pci_setup(struct spider_net_card *card)
-{
-	iounmap(card->regs);
-	pci_release_regions(card->pdev);
-}
-
-/**
- * spider_net_setup_pci_dev - sets up the device in terms of PCI operations
- * @pdev: PCI device
- *
- * Returns the card structure or NULL if any errors occur
- *
- * spider_net_setup_pci_dev initializes pdev and together with the
- * functions called in spider_net_open configures the device so that
- * data can be transferred over it
- * The net_device structure is attached to the card structure, if the
- * function returns without error.
- **/
-static struct spider_net_card *
-spider_net_setup_pci_dev(struct pci_dev *pdev)
-{
-	struct spider_net_card *card;
-	unsigned long mmio_start, mmio_len;
-
-	if (pci_enable_device(pdev)) {
-		dev_err(&pdev->dev, "Couldn't enable PCI device\n");
-		return NULL;
-	}
-
-	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
-		dev_err(&pdev->dev,
-		        "Couldn't find proper PCI device base address.\n");
-		goto out_disable_dev;
-	}
-
-	if (pci_request_regions(pdev, spider_net_driver_name)) {
-		dev_err(&pdev->dev,
-		        "Couldn't obtain PCI resources, aborting.\n");
-		goto out_disable_dev;
-	}
-
-	pci_set_master(pdev);
-
-	card = spider_net_alloc_card();
-	if (!card) {
-		dev_err(&pdev->dev,
-		        "Couldn't allocate net_device structure, aborting.\n");
-		goto out_release_regions;
-	}
-	card->pdev = pdev;
-
-	/* fetch base address and length of first resource */
-	mmio_start = pci_resource_start(pdev, 0);
-	mmio_len = pci_resource_len(pdev, 0);
-
-	card->netdev->mem_start = mmio_start;
-	card->netdev->mem_end = mmio_start + mmio_len;
-	card->regs = ioremap(mmio_start, mmio_len);
-
-	if (!card->regs) {
-		dev_err(&pdev->dev,
-		        "Couldn't obtain PCI resources, aborting.\n");
-		goto out_release_regions;
-	}
-
-	return card;
-
-out_release_regions:
-	pci_release_regions(pdev);
-out_disable_dev:
-	pci_disable_device(pdev);
-	pci_set_drvdata(pdev, NULL);
-	return NULL;
-}
-
-/**
- * spider_net_probe - initialization of a device
- * @pdev: PCI device
- * @ent: entry in the device id list
- *
- * Returns 0 on success, <0 on failure
- *
- * spider_net_probe initializes pdev and registers a net_device
- * structure for it. After that, the device can be ifconfig'ed up
- **/
-static int __devinit
-spider_net_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
-	int err = -EIO;
-	struct spider_net_card *card;
-
-	card = spider_net_setup_pci_dev(pdev);
-	if (!card)
-		goto out;
-
-	spider_net_workaround_rxramfull(card);
-	spider_net_init_card(card);
-
-	err = spider_net_setup_phy(card);
-	if (err)
-		goto out_undo_pci;
-
-	err = spider_net_setup_netdev(card);
-	if (err)
-		goto out_undo_pci;
-
-	return 0;
-
-out_undo_pci:
-	spider_net_undo_pci_setup(card);
-	free_netdev(card->netdev);
-out:
-	return err;
-}
-
-/**
- * spider_net_remove - removal of a device
- * @pdev: PCI device
- *
- * Returns 0 on success, <0 on failure
- *
- * spider_net_remove is called to remove the device and unregisters the
- * net_device
- **/
-static void __devexit
-spider_net_remove(struct pci_dev *pdev)
-{
-	struct net_device *netdev;
-	struct spider_net_card *card;
-
-	netdev = pci_get_drvdata(pdev);
-	card = netdev_priv(netdev);
-
-	wait_event(card->waitq,
-		   atomic_read(&card->tx_timeout_task_counter) == 0);
-
-	unregister_netdev(netdev);
-
-	/* switch off card */
-	spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
-			     SPIDER_NET_CKRCTRL_STOP_VALUE);
-	spider_net_write_reg(card, SPIDER_NET_CKRCTRL,
-			     SPIDER_NET_CKRCTRL_RUN_VALUE);
-
-	spider_net_undo_pci_setup(card);
-	free_netdev(netdev);
-}
-
-static struct pci_driver spider_net_driver = {
-	.name		= spider_net_driver_name,
-	.id_table	= spider_net_pci_tbl,
-	.probe		= spider_net_probe,
-	.remove		= __devexit_p(spider_net_remove)
-};
-
-/**
- * spider_net_init - init function when the driver is loaded
- *
- * spider_net_init registers the device driver
- */
-static int __init spider_net_init(void)
-{
-	printk(KERN_INFO "Spidernet version %s.\n", VERSION);
-
-	if (rx_descriptors < SPIDER_NET_RX_DESCRIPTORS_MIN) {
-		rx_descriptors = SPIDER_NET_RX_DESCRIPTORS_MIN;
-		pr_info("adjusting rx descriptors to %i.\n", rx_descriptors);
-	}
-	if (rx_descriptors > SPIDER_NET_RX_DESCRIPTORS_MAX) {
-		rx_descriptors = SPIDER_NET_RX_DESCRIPTORS_MAX;
-		pr_info("adjusting rx descriptors to %i.\n", rx_descriptors);
-	}
-	if (tx_descriptors < SPIDER_NET_TX_DESCRIPTORS_MIN) {
-		tx_descriptors = SPIDER_NET_TX_DESCRIPTORS_MIN;
-		pr_info("adjusting tx descriptors to %i.\n", tx_descriptors);
-	}
-	if (tx_descriptors > SPIDER_NET_TX_DESCRIPTORS_MAX) {
-		tx_descriptors = SPIDER_NET_TX_DESCRIPTORS_MAX;
-		pr_info("adjusting tx descriptors to %i.\n", tx_descriptors);
-	}
-
-	return pci_register_driver(&spider_net_driver);
-}
-
-/**
- * spider_net_cleanup - exit function when driver is unloaded
- *
- * spider_net_cleanup unregisters the device driver
- */
-static void __exit spider_net_cleanup(void)
-{
-	pci_unregister_driver(&spider_net_driver);
-}
-
-module_init(spider_net_init);
-module_exit(spider_net_cleanup);