cassini/niu/sun*: Move the Sun drivers

Moves the Sun drivers into drivers/net/ethernet/sun/ and make
the necessary Kconfig and Makefile changes.

Oliver Hartkopp <socketcan@hartkopp.net> suggested removing the
sun* prefix on the driver names.  This type of change I will
leave up to the driver maintainers.

CC: Sam Creasey <sammy@sammy.net>
CC: Adrian Sun <asun@darksunrising.com>
CC: Benjamin Herrenscmidt <benh@kernel.crashing.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 5305 deletions

diff --git a/drivers/net/cassini.c b/drivers/net/cassini.c
deleted file mode 100644
index 646c86bcc545..000000000000
--- a/drivers/net/cassini.c
+++ /dev/null
@@ -1,5305 +0,0 @@
-/* cassini.c: Sun Microsystems Cassini(+) ethernet driver.
- *
- * Copyright (C) 2004 Sun Microsystems Inc.
- * Copyright (C) 2003 Adrian Sun (asun@darksunrising.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 of the
- * License, 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., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
- *
- * This driver uses the sungem driver (c) David Miller
- * (davem@redhat.com) as its basis.
- *
- * The cassini chip has a number of features that distinguish it from
- * the gem chip:
- *  4 transmit descriptor rings that are used for either QoS (VLAN) or
- *      load balancing (non-VLAN mode)
- *  batching of multiple packets
- *  multiple CPU dispatching
- *  page-based RX descriptor engine with separate completion rings
- *  Gigabit support (GMII and PCS interface)
- *  MIF link up/down detection works
- *
- * RX is handled by page sized buffers that are attached as fragments to
- * the skb. here's what's done:
- *  -- driver allocates pages at a time and keeps reference counts
- *     on them.
- *  -- the upper protocol layers assume that the header is in the skb
- *     itself. as a result, cassini will copy a small amount (64 bytes)
- *     to make them happy.
- *  -- driver appends the rest of the data pages as frags to skbuffs
- *     and increments the reference count
- *  -- on page reclamation, the driver swaps the page with a spare page.
- *     if that page is still in use, it frees its reference to that page,
- *     and allocates a new page for use. otherwise, it just recycles the
- *     the page.
- *
- * NOTE: cassini can parse the header. however, it's not worth it
- *       as long as the network stack requires a header copy.
- *
- * TX has 4 queues. currently these queues are used in a round-robin
- * fashion for load balancing. They can also be used for QoS. for that
- * to work, however, QoS information needs to be exposed down to the driver
- * level so that subqueues get targeted to particular transmit rings.
- * alternatively, the queues can be configured via use of the all-purpose
- * ioctl.
- *
- * RX DATA: the rx completion ring has all the info, but the rx desc
- * ring has all of the data. RX can conceivably come in under multiple
- * interrupts, but the INT# assignment needs to be set up properly by
- * the BIOS and conveyed to the driver. PCI BIOSes don't know how to do
- * that. also, the two descriptor rings are designed to distinguish between
- * encrypted and non-encrypted packets, but we use them for buffering
- * instead.
- *
- * by default, the selective clear mask is set up to process rx packets.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/compiler.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/vmalloc.h>
-#include <linux/ioport.h>
-#include <linux/pci.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/list.h>
-#include <linux/dma-mapping.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/ethtool.h>
-#include <linux/crc32.h>
-#include <linux/random.h>
-#include <linux/mii.h>
-#include <linux/ip.h>
-#include <linux/tcp.h>
-#include <linux/mutex.h>
-#include <linux/firmware.h>
-
-#include <net/checksum.h>
-
-#include <linux/atomic.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/byteorder.h>
-#include <asm/uaccess.h>
-
-#define cas_page_map(x)      kmap_atomic((x), KM_SKB_DATA_SOFTIRQ)
-#define cas_page_unmap(x)    kunmap_atomic((x), KM_SKB_DATA_SOFTIRQ)
-#define CAS_NCPUS            num_online_cpus()
-
-#define cas_skb_release(x)  netif_rx(x)
-
-/* select which firmware to use */
-#define USE_HP_WORKAROUND
-#define HP_WORKAROUND_DEFAULT /* select which firmware to use as default */
-#define CAS_HP_ALT_FIRMWARE   cas_prog_null /* alternate firmware */
-
-#include "cassini.h"
-
-#define USE_TX_COMPWB      /* use completion writeback registers */
-#define USE_CSMA_CD_PROTO  /* standard CSMA/CD */
-#define USE_RX_BLANK       /* hw interrupt mitigation */
-#undef USE_ENTROPY_DEV     /* don't test for entropy device */
-
-/* NOTE: these aren't useable unless PCI interrupts can be assigned.
- * also, we need to make cp->lock finer-grained.
- */
-#undef  USE_PCI_INTB
-#undef  USE_PCI_INTC
-#undef  USE_PCI_INTD
-#undef  USE_QOS
-
-#undef  USE_VPD_DEBUG       /* debug vpd information if defined */
-
-/* rx processing options */
-#define USE_PAGE_ORDER      /* specify to allocate large rx pages */
-#define RX_DONT_BATCH  0    /* if 1, don't batch flows */
-#define RX_COPY_ALWAYS 0    /* if 0, use frags */
-#define RX_COPY_MIN    64   /* copy a little to make upper layers happy */
-#undef  RX_COUNT_BUFFERS    /* define to calculate RX buffer stats */
-
-#define DRV_MODULE_NAME		"cassini"
-#define DRV_MODULE_VERSION	"1.6"
-#define DRV_MODULE_RELDATE	"21 May 2008"
-
-#define CAS_DEF_MSG_ENABLE	  \
-	(NETIF_MSG_DRV		| \
-	 NETIF_MSG_PROBE	| \
-	 NETIF_MSG_LINK		| \
-	 NETIF_MSG_TIMER	| \
-	 NETIF_MSG_IFDOWN	| \
-	 NETIF_MSG_IFUP		| \
-	 NETIF_MSG_RX_ERR	| \
-	 NETIF_MSG_TX_ERR)
-
-/* length of time before we decide the hardware is borked,
- * and dev->tx_timeout() should be called to fix the problem
- */
-#define CAS_TX_TIMEOUT			(HZ)
-#define CAS_LINK_TIMEOUT                (22*HZ/10)
-#define CAS_LINK_FAST_TIMEOUT           (1)
-
-/* timeout values for state changing. these specify the number
- * of 10us delays to be used before giving up.
- */
-#define STOP_TRIES_PHY 1000
-#define STOP_TRIES     5000
-
-/* specify a minimum frame size to deal with some fifo issues
- * max mtu == 2 * page size - ethernet header - 64 - swivel =
- *            2 * page_size - 0x50
- */
-#define CAS_MIN_FRAME			97
-#define CAS_1000MB_MIN_FRAME            255
-#define CAS_MIN_MTU                     60
-#define CAS_MAX_MTU                     min(((cp->page_size << 1) - 0x50), 9000)
-
-#if 1
-/*
- * Eliminate these and use separate atomic counters for each, to
- * avoid a race condition.
- */
-#else
-#define CAS_RESET_MTU                   1
-#define CAS_RESET_ALL                   2
-#define CAS_RESET_SPARE                 3
-#endif
-
-static char version[] __devinitdata =
-	DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
-
-static int cassini_debug = -1;	/* -1 == use CAS_DEF_MSG_ENABLE as value */
-static int link_mode;
-
-MODULE_AUTHOR("Adrian Sun (asun@darksunrising.com)");
-MODULE_DESCRIPTION("Sun Cassini(+) ethernet driver");
-MODULE_LICENSE("GPL");
-MODULE_FIRMWARE("sun/cassini.bin");
-module_param(cassini_debug, int, 0);
-MODULE_PARM_DESC(cassini_debug, "Cassini bitmapped debugging message enable value");
-module_param(link_mode, int, 0);
-MODULE_PARM_DESC(link_mode, "default link mode");
-
-/*
- * Work around for a PCS bug in which the link goes down due to the chip
- * being confused and never showing a link status of "up."
- */
-#define DEFAULT_LINKDOWN_TIMEOUT 5
-/*
- * Value in seconds, for user input.
- */
-static int linkdown_timeout = DEFAULT_LINKDOWN_TIMEOUT;
-module_param(linkdown_timeout, int, 0);
-MODULE_PARM_DESC(linkdown_timeout,
-"min reset interval in sec. for PCS linkdown issue; disabled if not positive");
-
-/*
- * value in 'ticks' (units used by jiffies). Set when we init the
- * module because 'HZ' in actually a function call on some flavors of
- * Linux.  This will default to DEFAULT_LINKDOWN_TIMEOUT * HZ.
- */
-static int link_transition_timeout;
-
-
-
-static u16 link_modes[] __devinitdata = {
-	BMCR_ANENABLE,			 /* 0 : autoneg */
-	0,				 /* 1 : 10bt half duplex */
-	BMCR_SPEED100,			 /* 2 : 100bt half duplex */
-	BMCR_FULLDPLX,			 /* 3 : 10bt full duplex */
-	BMCR_SPEED100|BMCR_FULLDPLX,	 /* 4 : 100bt full duplex */
-	CAS_BMCR_SPEED1000|BMCR_FULLDPLX /* 5 : 1000bt full duplex */
-};
-
-static DEFINE_PCI_DEVICE_TABLE(cas_pci_tbl) = {
-	{ PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_CASSINI,
-	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
-	{ PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SATURN,
-	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
-	{ 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, cas_pci_tbl);
-
-static void cas_set_link_modes(struct cas *cp);
-
-static inline void cas_lock_tx(struct cas *cp)
-{
-	int i;
-
-	for (i = 0; i < N_TX_RINGS; i++)
-		spin_lock(&cp->tx_lock[i]);
-}
-
-static inline void cas_lock_all(struct cas *cp)
-{
-	spin_lock_irq(&cp->lock);
-	cas_lock_tx(cp);
-}
-
-/* WTZ: QA was finding deadlock problems with the previous
- * versions after long test runs with multiple cards per machine.
- * See if replacing cas_lock_all with safer versions helps. The
- * symptoms QA is reporting match those we'd expect if interrupts
- * aren't being properly restored, and we fixed a previous deadlock
- * with similar symptoms by using save/restore versions in other
- * places.
- */
-#define cas_lock_all_save(cp, flags) \
-do { \
-	struct cas *xxxcp = (cp); \
-	spin_lock_irqsave(&xxxcp->lock, flags); \
-	cas_lock_tx(xxxcp); \
-} while (0)
-
-static inline void cas_unlock_tx(struct cas *cp)
-{
-	int i;
-
-	for (i = N_TX_RINGS; i > 0; i--)
-		spin_unlock(&cp->tx_lock[i - 1]);
-}
-
-static inline void cas_unlock_all(struct cas *cp)
-{
-	cas_unlock_tx(cp);
-	spin_unlock_irq(&cp->lock);
-}
-
-#define cas_unlock_all_restore(cp, flags) \
-do { \
-	struct cas *xxxcp = (cp); \
-	cas_unlock_tx(xxxcp); \
-	spin_unlock_irqrestore(&xxxcp->lock, flags); \
-} while (0)
-
-static void cas_disable_irq(struct cas *cp, const int ring)
-{
-	/* Make sure we won't get any more interrupts */
-	if (ring == 0) {
-		writel(0xFFFFFFFF, cp->regs + REG_INTR_MASK);
-		return;
-	}
-
-	/* disable completion interrupts and selectively mask */
-	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
-		switch (ring) {
-#if defined (USE_PCI_INTB) || defined(USE_PCI_INTC) || defined(USE_PCI_INTD)
-#ifdef USE_PCI_INTB
-		case 1:
-#endif
-#ifdef USE_PCI_INTC
-		case 2:
-#endif
-#ifdef USE_PCI_INTD
-		case 3:
-#endif
-			writel(INTRN_MASK_CLEAR_ALL | INTRN_MASK_RX_EN,
-			       cp->regs + REG_PLUS_INTRN_MASK(ring));
-			break;
-#endif
-		default:
-			writel(INTRN_MASK_CLEAR_ALL, cp->regs +
-			       REG_PLUS_INTRN_MASK(ring));
-			break;
-		}
-	}
-}
-
-static inline void cas_mask_intr(struct cas *cp)
-{
-	int i;
-
-	for (i = 0; i < N_RX_COMP_RINGS; i++)
-		cas_disable_irq(cp, i);
-}
-
-static void cas_enable_irq(struct cas *cp, const int ring)
-{
-	if (ring == 0) { /* all but TX_DONE */
-		writel(INTR_TX_DONE, cp->regs + REG_INTR_MASK);
-		return;
-	}
-
-	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
-		switch (ring) {
-#if defined (USE_PCI_INTB) || defined(USE_PCI_INTC) || defined(USE_PCI_INTD)
-#ifdef USE_PCI_INTB
-		case 1:
-#endif
-#ifdef USE_PCI_INTC
-		case 2:
-#endif
-#ifdef USE_PCI_INTD
-		case 3:
-#endif
-			writel(INTRN_MASK_RX_EN, cp->regs +
-			       REG_PLUS_INTRN_MASK(ring));
-			break;
-#endif
-		default:
-			break;
-		}
-	}
-}
-
-static inline void cas_unmask_intr(struct cas *cp)
-{
-	int i;
-
-	for (i = 0; i < N_RX_COMP_RINGS; i++)
-		cas_enable_irq(cp, i);
-}
-
-static inline void cas_entropy_gather(struct cas *cp)
-{
-#ifdef USE_ENTROPY_DEV
-	if ((cp->cas_flags & CAS_FLAG_ENTROPY_DEV) == 0)
-		return;
-
-	batch_entropy_store(readl(cp->regs + REG_ENTROPY_IV),
-			    readl(cp->regs + REG_ENTROPY_IV),
-			    sizeof(uint64_t)*8);
-#endif
-}
-
-static inline void cas_entropy_reset(struct cas *cp)
-{
-#ifdef USE_ENTROPY_DEV
-	if ((cp->cas_flags & CAS_FLAG_ENTROPY_DEV) == 0)
-		return;
-
-	writel(BIM_LOCAL_DEV_PAD | BIM_LOCAL_DEV_PROM | BIM_LOCAL_DEV_EXT,
-	       cp->regs + REG_BIM_LOCAL_DEV_EN);
-	writeb(ENTROPY_RESET_STC_MODE, cp->regs + REG_ENTROPY_RESET);
-	writeb(0x55, cp->regs + REG_ENTROPY_RAND_REG);
-
-	/* if we read back 0x0, we don't have an entropy device */
-	if (readb(cp->regs + REG_ENTROPY_RAND_REG) == 0)
-		cp->cas_flags &= ~CAS_FLAG_ENTROPY_DEV;
-#endif
-}
-
-/* access to the phy. the following assumes that we've initialized the MIF to
- * be in frame rather than bit-bang mode
- */
-static u16 cas_phy_read(struct cas *cp, int reg)
-{
-	u32 cmd;
-	int limit = STOP_TRIES_PHY;
-
-	cmd = MIF_FRAME_ST | MIF_FRAME_OP_READ;
-	cmd |= CAS_BASE(MIF_FRAME_PHY_ADDR, cp->phy_addr);
-	cmd |= CAS_BASE(MIF_FRAME_REG_ADDR, reg);
-	cmd |= MIF_FRAME_TURN_AROUND_MSB;
-	writel(cmd, cp->regs + REG_MIF_FRAME);
-
-	/* poll for completion */
-	while (limit-- > 0) {
-		udelay(10);
-		cmd = readl(cp->regs + REG_MIF_FRAME);
-		if (cmd & MIF_FRAME_TURN_AROUND_LSB)
-			return cmd & MIF_FRAME_DATA_MASK;
-	}
-	return 0xFFFF; /* -1 */
-}
-
-static int cas_phy_write(struct cas *cp, int reg, u16 val)
-{
-	int limit = STOP_TRIES_PHY;
-	u32 cmd;
-
-	cmd = MIF_FRAME_ST | MIF_FRAME_OP_WRITE;
-	cmd |= CAS_BASE(MIF_FRAME_PHY_ADDR, cp->phy_addr);
-	cmd |= CAS_BASE(MIF_FRAME_REG_ADDR, reg);
-	cmd |= MIF_FRAME_TURN_AROUND_MSB;
-	cmd |= val & MIF_FRAME_DATA_MASK;
-	writel(cmd, cp->regs + REG_MIF_FRAME);
-
-	/* poll for completion */
-	while (limit-- > 0) {
-		udelay(10);
-		cmd = readl(cp->regs + REG_MIF_FRAME);
-		if (cmd & MIF_FRAME_TURN_AROUND_LSB)
-			return 0;
-	}
-	return -1;
-}
-
-static void cas_phy_powerup(struct cas *cp)
-{
-	u16 ctl = cas_phy_read(cp, MII_BMCR);
-
-	if ((ctl & BMCR_PDOWN) == 0)
-		return;
-	ctl &= ~BMCR_PDOWN;
-	cas_phy_write(cp, MII_BMCR, ctl);
-}
-
-static void cas_phy_powerdown(struct cas *cp)
-{
-	u16 ctl = cas_phy_read(cp, MII_BMCR);
-
-	if (ctl & BMCR_PDOWN)
-		return;
-	ctl |= BMCR_PDOWN;
-	cas_phy_write(cp, MII_BMCR, ctl);
-}
-
-/* cp->lock held. note: the last put_page will free the buffer */
-static int cas_page_free(struct cas *cp, cas_page_t *page)
-{
-	pci_unmap_page(cp->pdev, page->dma_addr, cp->page_size,
-		       PCI_DMA_FROMDEVICE);
-	__free_pages(page->buffer, cp->page_order);
-	kfree(page);
-	return 0;
-}
-
-#ifdef RX_COUNT_BUFFERS
-#define RX_USED_ADD(x, y)       ((x)->used += (y))
-#define RX_USED_SET(x, y)       ((x)->used  = (y))
-#else
-#define RX_USED_ADD(x, y)
-#define RX_USED_SET(x, y)
-#endif
-
-/* local page allocation routines for the receive buffers. jumbo pages
- * require at least 8K contiguous and 8K aligned buffers.
- */
-static cas_page_t *cas_page_alloc(struct cas *cp, const gfp_t flags)
-{
-	cas_page_t *page;
-
-	page = kmalloc(sizeof(cas_page_t), flags);
-	if (!page)
-		return NULL;
-
-	INIT_LIST_HEAD(&page->list);
-	RX_USED_SET(page, 0);
-	page->buffer = alloc_pages(flags, cp->page_order);
-	if (!page->buffer)
-		goto page_err;
-	page->dma_addr = pci_map_page(cp->pdev, page->buffer, 0,
-				      cp->page_size, PCI_DMA_FROMDEVICE);
-	return page;
-
-page_err:
-	kfree(page);
-	return NULL;
-}
-
-/* initialize spare pool of rx buffers, but allocate during the open */
-static void cas_spare_init(struct cas *cp)
-{
-  	spin_lock(&cp->rx_inuse_lock);
-	INIT_LIST_HEAD(&cp->rx_inuse_list);
-	spin_unlock(&cp->rx_inuse_lock);
-
-	spin_lock(&cp->rx_spare_lock);
-	INIT_LIST_HEAD(&cp->rx_spare_list);
-	cp->rx_spares_needed = RX_SPARE_COUNT;
-	spin_unlock(&cp->rx_spare_lock);
-}
-
-/* used on close. free all the spare buffers. */
-static void cas_spare_free(struct cas *cp)
-{
-	struct list_head list, *elem, *tmp;
-
-	/* free spare buffers */
-	INIT_LIST_HEAD(&list);
-	spin_lock(&cp->rx_spare_lock);
-	list_splice_init(&cp->rx_spare_list, &list);
-	spin_unlock(&cp->rx_spare_lock);
-	list_for_each_safe(elem, tmp, &list) {
-		cas_page_free(cp, list_entry(elem, cas_page_t, list));
-	}
-
-	INIT_LIST_HEAD(&list);
-#if 1
-	/*
-	 * Looks like Adrian had protected this with a different
-	 * lock than used everywhere else to manipulate this list.
-	 */
-	spin_lock(&cp->rx_inuse_lock);
-	list_splice_init(&cp->rx_inuse_list, &list);
-	spin_unlock(&cp->rx_inuse_lock);
-#else
-	spin_lock(&cp->rx_spare_lock);
-	list_splice_init(&cp->rx_inuse_list, &list);
-	spin_unlock(&cp->rx_spare_lock);
-#endif
-	list_for_each_safe(elem, tmp, &list) {
-		cas_page_free(cp, list_entry(elem, cas_page_t, list));
-	}
-}
-
-/* replenish spares if needed */
-static void cas_spare_recover(struct cas *cp, const gfp_t flags)
-{
-	struct list_head list, *elem, *tmp;
-	int needed, i;
-
-	/* check inuse list. if we don't need any more free buffers,
-	 * just free it
-	 */
-
-	/* make a local copy of the list */
-	INIT_LIST_HEAD(&list);
-	spin_lock(&cp->rx_inuse_lock);
-	list_splice_init(&cp->rx_inuse_list, &list);
-	spin_unlock(&cp->rx_inuse_lock);
-
-	list_for_each_safe(elem, tmp, &list) {
-		cas_page_t *page = list_entry(elem, cas_page_t, list);
-
-		/*
-		 * With the lockless pagecache, cassini buffering scheme gets
-		 * slightly less accurate: we might find that a page has an
-		 * elevated reference count here, due to a speculative ref,
-		 * and skip it as in-use. Ideally we would be able to reclaim
-		 * it. However this would be such a rare case, it doesn't
-		 * matter too much as we should pick it up the next time round.
-		 *
-		 * Importantly, if we find that the page has a refcount of 1
-		 * here (our refcount), then we know it is definitely not inuse
-		 * so we can reuse it.
-		 */
-		if (page_count(page->buffer) > 1)
-			continue;
-
-		list_del(elem);
-		spin_lock(&cp->rx_spare_lock);
-		if (cp->rx_spares_needed > 0) {
-			list_add(elem, &cp->rx_spare_list);
-			cp->rx_spares_needed--;
-			spin_unlock(&cp->rx_spare_lock);
-		} else {
-			spin_unlock(&cp->rx_spare_lock);
-			cas_page_free(cp, page);
-		}
-	}
-
-	/* put any inuse buffers back on the list */
-	if (!list_empty(&list)) {
-		spin_lock(&cp->rx_inuse_lock);
-		list_splice(&list, &cp->rx_inuse_list);
-		spin_unlock(&cp->rx_inuse_lock);
-	}
-
-	spin_lock(&cp->rx_spare_lock);
-	needed = cp->rx_spares_needed;
-	spin_unlock(&cp->rx_spare_lock);
-	if (!needed)
-		return;
-
-	/* we still need spares, so try to allocate some */
-	INIT_LIST_HEAD(&list);
-	i = 0;
-	while (i < needed) {
-		cas_page_t *spare = cas_page_alloc(cp, flags);
-		if (!spare)
-			break;
-		list_add(&spare->list, &list);
-		i++;
-	}
-
-	spin_lock(&cp->rx_spare_lock);
-	list_splice(&list, &cp->rx_spare_list);
-	cp->rx_spares_needed -= i;
-	spin_unlock(&cp->rx_spare_lock);
-}
-
-/* pull a page from the list. */
-static cas_page_t *cas_page_dequeue(struct cas *cp)
-{
-	struct list_head *entry;
-	int recover;
-
-	spin_lock(&cp->rx_spare_lock);
-	if (list_empty(&cp->rx_spare_list)) {
-		/* try to do a quick recovery */
-		spin_unlock(&cp->rx_spare_lock);
-		cas_spare_recover(cp, GFP_ATOMIC);
-		spin_lock(&cp->rx_spare_lock);
-		if (list_empty(&cp->rx_spare_list)) {
-			netif_err(cp, rx_err, cp->dev,
-				  "no spare buffers available\n");
-			spin_unlock(&cp->rx_spare_lock);
-			return NULL;
-		}
-	}
-
-	entry = cp->rx_spare_list.next;
-	list_del(entry);
-	recover = ++cp->rx_spares_needed;
-	spin_unlock(&cp->rx_spare_lock);
-
-	/* trigger the timer to do the recovery */
-	if ((recover & (RX_SPARE_RECOVER_VAL - 1)) == 0) {
-#if 1
-		atomic_inc(&cp->reset_task_pending);
-		atomic_inc(&cp->reset_task_pending_spare);
-		schedule_work(&cp->reset_task);
-#else
-		atomic_set(&cp->reset_task_pending, CAS_RESET_SPARE);
-		schedule_work(&cp->reset_task);
-#endif
-	}
-	return list_entry(entry, cas_page_t, list);
-}
-
-
-static void cas_mif_poll(struct cas *cp, const int enable)
-{
-	u32 cfg;
-
-	cfg  = readl(cp->regs + REG_MIF_CFG);
-	cfg &= (MIF_CFG_MDIO_0 | MIF_CFG_MDIO_1);
-
-	if (cp->phy_type & CAS_PHY_MII_MDIO1)
-		cfg |= MIF_CFG_PHY_SELECT;
-
-	/* poll and interrupt on link status change. */
-	if (enable) {
-		cfg |= MIF_CFG_POLL_EN;
-		cfg |= CAS_BASE(MIF_CFG_POLL_REG, MII_BMSR);
-		cfg |= CAS_BASE(MIF_CFG_POLL_PHY, cp->phy_addr);
-	}
-	writel((enable) ? ~(BMSR_LSTATUS | BMSR_ANEGCOMPLETE) : 0xFFFF,
-	       cp->regs + REG_MIF_MASK);
-	writel(cfg, cp->regs + REG_MIF_CFG);
-}
-
-/* Must be invoked under cp->lock */
-static void cas_begin_auto_negotiation(struct cas *cp, struct ethtool_cmd *ep)
-{
-	u16 ctl;
-#if 1
-	int lcntl;
-	int changed = 0;
-	int oldstate = cp->lstate;
-	int link_was_not_down = !(oldstate == link_down);
-#endif
-	/* Setup link parameters */
-	if (!ep)
-		goto start_aneg;
-	lcntl = cp->link_cntl;
-	if (ep->autoneg == AUTONEG_ENABLE)
-		cp->link_cntl = BMCR_ANENABLE;
-	else {
-		u32 speed = ethtool_cmd_speed(ep);
-		cp->link_cntl = 0;
-		if (speed == SPEED_100)
-			cp->link_cntl |= BMCR_SPEED100;
-		else if (speed == SPEED_1000)
-			cp->link_cntl |= CAS_BMCR_SPEED1000;
-		if (ep->duplex == DUPLEX_FULL)
-			cp->link_cntl |= BMCR_FULLDPLX;
-	}
-#if 1
-	changed = (lcntl != cp->link_cntl);
-#endif
-start_aneg:
-	if (cp->lstate == link_up) {
-		netdev_info(cp->dev, "PCS link down\n");
-	} else {
-		if (changed) {
-			netdev_info(cp->dev, "link configuration changed\n");
-		}
-	}
-	cp->lstate = link_down;
-	cp->link_transition = LINK_TRANSITION_LINK_DOWN;
-	if (!cp->hw_running)
-		return;
-#if 1
-	/*
-	 * WTZ: If the old state was link_up, we turn off the carrier
-	 * to replicate everything we do elsewhere on a link-down
-	 * event when we were already in a link-up state..
-	 */
-	if (oldstate == link_up)
-		netif_carrier_off(cp->dev);
-	if (changed  && link_was_not_down) {
-		/*
-		 * WTZ: This branch will simply schedule a full reset after
-		 * we explicitly changed link modes in an ioctl. See if this
-		 * fixes the link-problems we were having for forced mode.
-		 */
-		atomic_inc(&cp->reset_task_pending);
-		atomic_inc(&cp->reset_task_pending_all);
-		schedule_work(&cp->reset_task);
-		cp->timer_ticks = 0;
-		mod_timer(&cp->link_timer, jiffies + CAS_LINK_TIMEOUT);
-		return;
-	}
-#endif
-	if (cp->phy_type & CAS_PHY_SERDES) {
-		u32 val = readl(cp->regs + REG_PCS_MII_CTRL);
-
-		if (cp->link_cntl & BMCR_ANENABLE) {
-			val |= (PCS_MII_RESTART_AUTONEG | PCS_MII_AUTONEG_EN);
-			cp->lstate = link_aneg;
-		} else {
-			if (cp->link_cntl & BMCR_FULLDPLX)
-				val |= PCS_MII_CTRL_DUPLEX;
-			val &= ~PCS_MII_AUTONEG_EN;
-			cp->lstate = link_force_ok;
-		}
-		cp->link_transition = LINK_TRANSITION_LINK_CONFIG;
-		writel(val, cp->regs + REG_PCS_MII_CTRL);
-
-	} else {
-		cas_mif_poll(cp, 0);
-		ctl = cas_phy_read(cp, MII_BMCR);
-		ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 |
-			 CAS_BMCR_SPEED1000 | BMCR_ANENABLE);
-		ctl |= cp->link_cntl;
-		if (ctl & BMCR_ANENABLE) {
-			ctl |= BMCR_ANRESTART;
-			cp->lstate = link_aneg;
-		} else {
-			cp->lstate = link_force_ok;
-		}
-		cp->link_transition = LINK_TRANSITION_LINK_CONFIG;
-		cas_phy_write(cp, MII_BMCR, ctl);
-		cas_mif_poll(cp, 1);
-	}
-
-	cp->timer_ticks = 0;
-	mod_timer(&cp->link_timer, jiffies + CAS_LINK_TIMEOUT);
-}
-
-/* Must be invoked under cp->lock. */
-static int cas_reset_mii_phy(struct cas *cp)
-{
-	int limit = STOP_TRIES_PHY;
-	u16 val;
-
-	cas_phy_write(cp, MII_BMCR, BMCR_RESET);
-	udelay(100);
-	while (--limit) {
-		val = cas_phy_read(cp, MII_BMCR);
-		if ((val & BMCR_RESET) == 0)
-			break;
-		udelay(10);
-	}
-	return limit <= 0;
-}
-
-static int cas_saturn_firmware_init(struct cas *cp)
-{
-	const struct firmware *fw;
-	const char fw_name[] = "sun/cassini.bin";
-	int err;
-
-	if (PHY_NS_DP83065 != cp->phy_id)
-		return 0;
-
-	err = request_firmware(&fw, fw_name, &cp->pdev->dev);
-	if (err) {
-		pr_err("Failed to load firmware \"%s\"\n",
-		       fw_name);
-		return err;
-	}
-	if (fw->size < 2) {
-		pr_err("bogus length %zu in \"%s\"\n",
-		       fw->size, fw_name);
-		err = -EINVAL;
-		goto out;
-	}
-	cp->fw_load_addr= fw->data[1] << 8 | fw->data[0];
-	cp->fw_size = fw->size - 2;
-	cp->fw_data = vmalloc(cp->fw_size);
-	if (!cp->fw_data) {
-		err = -ENOMEM;
-		pr_err("\"%s\" Failed %d\n", fw_name, err);
-		goto out;
-	}
-	memcpy(cp->fw_data, &fw->data[2], cp->fw_size);
-out:
-	release_firmware(fw);
-	return err;
-}
-
-static void cas_saturn_firmware_load(struct cas *cp)
-{
-	int i;
-
-	cas_phy_powerdown(cp);
-
-	/* expanded memory access mode */
-	cas_phy_write(cp, DP83065_MII_MEM, 0x0);
-
-	/* pointer configuration for new firmware */
-	cas_phy_write(cp, DP83065_MII_REGE, 0x8ff9);
-	cas_phy_write(cp, DP83065_MII_REGD, 0xbd);
-	cas_phy_write(cp, DP83065_MII_REGE, 0x8ffa);
-	cas_phy_write(cp, DP83065_MII_REGD, 0x82);
-	cas_phy_write(cp, DP83065_MII_REGE, 0x8ffb);
-	cas_phy_write(cp, DP83065_MII_REGD, 0x0);
-	cas_phy_write(cp, DP83065_MII_REGE, 0x8ffc);
-	cas_phy_write(cp, DP83065_MII_REGD, 0x39);
-
-	/* download new firmware */
-	cas_phy_write(cp, DP83065_MII_MEM, 0x1);
-	cas_phy_write(cp, DP83065_MII_REGE, cp->fw_load_addr);
-	for (i = 0; i < cp->fw_size; i++)
-		cas_phy_write(cp, DP83065_MII_REGD, cp->fw_data[i]);
-
-	/* enable firmware */
-	cas_phy_write(cp, DP83065_MII_REGE, 0x8ff8);
-	cas_phy_write(cp, DP83065_MII_REGD, 0x1);
-}
-
-
-/* phy initialization */
-static void cas_phy_init(struct cas *cp)
-{
-	u16 val;
-
-	/* if we're in MII/GMII mode, set up phy */
-	if (CAS_PHY_MII(cp->phy_type)) {
-		writel(PCS_DATAPATH_MODE_MII,
-		       cp->regs + REG_PCS_DATAPATH_MODE);
-
-		cas_mif_poll(cp, 0);
-		cas_reset_mii_phy(cp); /* take out of isolate mode */
-
-		if (PHY_LUCENT_B0 == cp->phy_id) {
-			/* workaround link up/down issue with lucent */
-			cas_phy_write(cp, LUCENT_MII_REG, 0x8000);
-			cas_phy_write(cp, MII_BMCR, 0x00f1);
-			cas_phy_write(cp, LUCENT_MII_REG, 0x0);
-
-		} else if (PHY_BROADCOM_B0 == (cp->phy_id & 0xFFFFFFFC)) {
-			/* workarounds for broadcom phy */
-			cas_phy_write(cp, BROADCOM_MII_REG8, 0x0C20);
-			cas_phy_write(cp, BROADCOM_MII_REG7, 0x0012);
-			cas_phy_write(cp, BROADCOM_MII_REG5, 0x1804);
-			cas_phy_write(cp, BROADCOM_MII_REG7, 0x0013);
-			cas_phy_write(cp, BROADCOM_MII_REG5, 0x1204);
-			cas_phy_write(cp, BROADCOM_MII_REG7, 0x8006);
-			cas_phy_write(cp, BROADCOM_MII_REG5, 0x0132);
-			cas_phy_write(cp, BROADCOM_MII_REG7, 0x8006);
-			cas_phy_write(cp, BROADCOM_MII_REG5, 0x0232);
-			cas_phy_write(cp, BROADCOM_MII_REG7, 0x201F);
-			cas_phy_write(cp, BROADCOM_MII_REG5, 0x0A20);
-
-		} else if (PHY_BROADCOM_5411 == cp->phy_id) {
-			val = cas_phy_read(cp, BROADCOM_MII_REG4);
-			val = cas_phy_read(cp, BROADCOM_MII_REG4);
-			if (val & 0x0080) {
-				/* link workaround */
-				cas_phy_write(cp, BROADCOM_MII_REG4,
-					      val & ~0x0080);
-			}
-
-		} else if (cp->cas_flags & CAS_FLAG_SATURN) {
-			writel((cp->phy_type & CAS_PHY_MII_MDIO0) ?
-			       SATURN_PCFG_FSI : 0x0,
-			       cp->regs + REG_SATURN_PCFG);
-
-			/* load firmware to address 10Mbps auto-negotiation
-			 * issue. NOTE: this will need to be changed if the
-			 * default firmware gets fixed.
-			 */
-			if (PHY_NS_DP83065 == cp->phy_id) {
-				cas_saturn_firmware_load(cp);
-			}
-			cas_phy_powerup(cp);
-		}
-
-		/* advertise capabilities */
-		val = cas_phy_read(cp, MII_BMCR);
-		val &= ~BMCR_ANENABLE;
-		cas_phy_write(cp, MII_BMCR, val);
-		udelay(10);
-
-		cas_phy_write(cp, MII_ADVERTISE,
-			      cas_phy_read(cp, MII_ADVERTISE) |
-			      (ADVERTISE_10HALF | ADVERTISE_10FULL |
-			       ADVERTISE_100HALF | ADVERTISE_100FULL |
-			       CAS_ADVERTISE_PAUSE |
-			       CAS_ADVERTISE_ASYM_PAUSE));
-
-		if (cp->cas_flags & CAS_FLAG_1000MB_CAP) {
-			/* make sure that we don't advertise half
-			 * duplex to avoid a chip issue
-			 */
-			val  = cas_phy_read(cp, CAS_MII_1000_CTRL);
-			val &= ~CAS_ADVERTISE_1000HALF;
-			val |= CAS_ADVERTISE_1000FULL;
-			cas_phy_write(cp, CAS_MII_1000_CTRL, val);
-		}
-
-	} else {
-		/* reset pcs for serdes */
-		u32 val;
-		int limit;
-
-		writel(PCS_DATAPATH_MODE_SERDES,
-		       cp->regs + REG_PCS_DATAPATH_MODE);
-
-		/* enable serdes pins on saturn */
-		if (cp->cas_flags & CAS_FLAG_SATURN)
-			writel(0, cp->regs + REG_SATURN_PCFG);
-
-		/* Reset PCS unit. */
-		val = readl(cp->regs + REG_PCS_MII_CTRL);
-		val |= PCS_MII_RESET;
-		writel(val, cp->regs + REG_PCS_MII_CTRL);
-
-		limit = STOP_TRIES;
-		while (--limit > 0) {
-			udelay(10);
-			if ((readl(cp->regs + REG_PCS_MII_CTRL) &
-			     PCS_MII_RESET) == 0)
-				break;
-		}
-		if (limit <= 0)
-			netdev_warn(cp->dev, "PCS reset bit would not clear [%08x]\n",
-				    readl(cp->regs + REG_PCS_STATE_MACHINE));
-
-		/* Make sure PCS is disabled while changing advertisement
-		 * configuration.
-		 */
-		writel(0x0, cp->regs + REG_PCS_CFG);
-
-		/* Advertise all capabilities except half-duplex. */
-		val  = readl(cp->regs + REG_PCS_MII_ADVERT);
-		val &= ~PCS_MII_ADVERT_HD;
-		val |= (PCS_MII_ADVERT_FD | PCS_MII_ADVERT_SYM_PAUSE |
-			PCS_MII_ADVERT_ASYM_PAUSE);
-		writel(val, cp->regs + REG_PCS_MII_ADVERT);
-
-		/* enable PCS */
-		writel(PCS_CFG_EN, cp->regs + REG_PCS_CFG);
-
-		/* pcs workaround: enable sync detect */
-		writel(PCS_SERDES_CTRL_SYNCD_EN,
-		       cp->regs + REG_PCS_SERDES_CTRL);
-	}
-}
-
-
-static int cas_pcs_link_check(struct cas *cp)
-{
-	u32 stat, state_machine;
-	int retval = 0;
-
-	/* The link status bit latches on zero, so you must
-	 * read it twice in such a case to see a transition
-	 * to the link being up.
-	 */
-	stat = readl(cp->regs + REG_PCS_MII_STATUS);
-	if ((stat & PCS_MII_STATUS_LINK_STATUS) == 0)
-		stat = readl(cp->regs + REG_PCS_MII_STATUS);
-
-	/* The remote-fault indication is only valid
-	 * when autoneg has completed.
-	 */
-	if ((stat & (PCS_MII_STATUS_AUTONEG_COMP |
-		     PCS_MII_STATUS_REMOTE_FAULT)) ==
-	    (PCS_MII_STATUS_AUTONEG_COMP | PCS_MII_STATUS_REMOTE_FAULT))
-		netif_info(cp, link, cp->dev, "PCS RemoteFault\n");
-
-	/* work around link detection issue by querying the PCS state
-	 * machine directly.
-	 */
-	state_machine = readl(cp->regs + REG_PCS_STATE_MACHINE);
-	if ((state_machine & PCS_SM_LINK_STATE_MASK) != SM_LINK_STATE_UP) {
-		stat &= ~PCS_MII_STATUS_LINK_STATUS;
-	} else if (state_machine & PCS_SM_WORD_SYNC_STATE_MASK) {
-		stat |= PCS_MII_STATUS_LINK_STATUS;
-	}
-
-	if (stat & PCS_MII_STATUS_LINK_STATUS) {
-		if (cp->lstate != link_up) {
-			if (cp->opened) {
-				cp->lstate = link_up;
-				cp->link_transition = LINK_TRANSITION_LINK_UP;
-
-				cas_set_link_modes(cp);
-				netif_carrier_on(cp->dev);
-			}
-		}
-	} else if (cp->lstate == link_up) {
-		cp->lstate = link_down;
-		if (link_transition_timeout != 0 &&
-		    cp->link_transition != LINK_TRANSITION_REQUESTED_RESET &&
-		    !cp->link_transition_jiffies_valid) {
-			/*
-			 * force a reset, as a workaround for the
-			 * link-failure problem. May want to move this to a
-			 * point a bit earlier in the sequence. If we had
-			 * generated a reset a short time ago, we'll wait for
-			 * the link timer to check the status until a
-			 * timer expires (link_transistion_jiffies_valid is
-			 * true when the timer is running.)  Instead of using
-			 * a system timer, we just do a check whenever the
-			 * link timer is running - this clears the flag after
-			 * a suitable delay.
-			 */
-			retval = 1;
-			cp->link_transition = LINK_TRANSITION_REQUESTED_RESET;
-			cp->link_transition_jiffies = jiffies;
-			cp->link_transition_jiffies_valid = 1;
-		} else {
-			cp->link_transition = LINK_TRANSITION_ON_FAILURE;
-		}
-		netif_carrier_off(cp->dev);
-		if (cp->opened)
-			netif_info(cp, link, cp->dev, "PCS link down\n");
-
-		/* Cassini only: if you force a mode, there can be
-		 * sync problems on link down. to fix that, the following
-		 * things need to be checked:
-		 * 1) read serialink state register
-		 * 2) read pcs status register to verify link down.
-		 * 3) if link down and serial link == 0x03, then you need
-		 *    to global reset the chip.
-		 */
-		if ((cp->cas_flags & CAS_FLAG_REG_PLUS) == 0) {
-			/* should check to see if we're in a forced mode */
-			stat = readl(cp->regs + REG_PCS_SERDES_STATE);
-			if (stat == 0x03)
-				return 1;
-		}
-	} else if (cp->lstate == link_down) {
-		if (link_transition_timeout != 0 &&
-		    cp->link_transition != LINK_TRANSITION_REQUESTED_RESET &&
-		    !cp->link_transition_jiffies_valid) {
-			/* force a reset, as a workaround for the
-			 * link-failure problem.  May want to move
-			 * this to a point a bit earlier in the
-			 * sequence.
-			 */
-			retval = 1;
-			cp->link_transition = LINK_TRANSITION_REQUESTED_RESET;
-			cp->link_transition_jiffies = jiffies;
-			cp->link_transition_jiffies_valid = 1;
-		} else {
-			cp->link_transition = LINK_TRANSITION_STILL_FAILED;
-		}
-	}
-
-	return retval;
-}
-
-static int cas_pcs_interrupt(struct net_device *dev,
-			     struct cas *cp, u32 status)
-{
-	u32 stat = readl(cp->regs + REG_PCS_INTR_STATUS);
-
-	if ((stat & PCS_INTR_STATUS_LINK_CHANGE) == 0)
-		return 0;
-	return cas_pcs_link_check(cp);
-}
-
-static int cas_txmac_interrupt(struct net_device *dev,
-			       struct cas *cp, u32 status)
-{
-	u32 txmac_stat = readl(cp->regs + REG_MAC_TX_STATUS);
-
-	if (!txmac_stat)
-		return 0;
-
-	netif_printk(cp, intr, KERN_DEBUG, cp->dev,
-		     "txmac interrupt, txmac_stat: 0x%x\n", txmac_stat);
-
-	/* Defer timer expiration is quite normal,
-	 * don't even log the event.
-	 */
-	if ((txmac_stat & MAC_TX_DEFER_TIMER) &&
-	    !(txmac_stat & ~MAC_TX_DEFER_TIMER))
-		return 0;
-
-	spin_lock(&cp->stat_lock[0]);
-	if (txmac_stat & MAC_TX_UNDERRUN) {
-		netdev_err(dev, "TX MAC xmit underrun\n");
-		cp->net_stats[0].tx_fifo_errors++;
-	}
-
-	if (txmac_stat & MAC_TX_MAX_PACKET_ERR) {
-		netdev_err(dev, "TX MAC max packet size error\n");
-		cp->net_stats[0].tx_errors++;
-	}
-
-	/* The rest are all cases of one of the 16-bit TX
-	 * counters expiring.
-	 */
-	if (txmac_stat & MAC_TX_COLL_NORMAL)
-		cp->net_stats[0].collisions += 0x10000;
-
-	if (txmac_stat & MAC_TX_COLL_EXCESS) {
-		cp->net_stats[0].tx_aborted_errors += 0x10000;
-		cp->net_stats[0].collisions += 0x10000;
-	}
-
-	if (txmac_stat & MAC_TX_COLL_LATE) {
-		cp->net_stats[0].tx_aborted_errors += 0x10000;
-		cp->net_stats[0].collisions += 0x10000;
-	}
-	spin_unlock(&cp->stat_lock[0]);
-
-	/* We do not keep track of MAC_TX_COLL_FIRST and
-	 * MAC_TX_PEAK_ATTEMPTS events.
-	 */
-	return 0;
-}
-
-static void cas_load_firmware(struct cas *cp, cas_hp_inst_t *firmware)
-{
-	cas_hp_inst_t *inst;
-	u32 val;
-	int i;
-
-	i = 0;
-	while ((inst = firmware) && inst->note) {
-		writel(i, cp->regs + REG_HP_INSTR_RAM_ADDR);
-
-		val = CAS_BASE(HP_INSTR_RAM_HI_VAL, inst->val);
-		val |= CAS_BASE(HP_INSTR_RAM_HI_MASK, inst->mask);
-		writel(val, cp->regs + REG_HP_INSTR_RAM_DATA_HI);
-
-		val = CAS_BASE(HP_INSTR_RAM_MID_OUTARG, inst->outarg >> 10);
-		val |= CAS_BASE(HP_INSTR_RAM_MID_OUTOP, inst->outop);
-		val |= CAS_BASE(HP_INSTR_RAM_MID_FNEXT, inst->fnext);
-		val |= CAS_BASE(HP_INSTR_RAM_MID_FOFF, inst->foff);
-		val |= CAS_BASE(HP_INSTR_RAM_MID_SNEXT, inst->snext);
-		val |= CAS_BASE(HP_INSTR_RAM_MID_SOFF, inst->soff);
-		val |= CAS_BASE(HP_INSTR_RAM_MID_OP, inst->op);
-		writel(val, cp->regs + REG_HP_INSTR_RAM_DATA_MID);
-
-		val = CAS_BASE(HP_INSTR_RAM_LOW_OUTMASK, inst->outmask);
-		val |= CAS_BASE(HP_INSTR_RAM_LOW_OUTSHIFT, inst->outshift);
-		val |= CAS_BASE(HP_INSTR_RAM_LOW_OUTEN, inst->outenab);
-		val |= CAS_BASE(HP_INSTR_RAM_LOW_OUTARG, inst->outarg);
-		writel(val, cp->regs + REG_HP_INSTR_RAM_DATA_LOW);
-		++firmware;
-		++i;
-	}
-}
-
-static void cas_init_rx_dma(struct cas *cp)
-{
-	u64 desc_dma = cp->block_dvma;
-	u32 val;
-	int i, size;
-
-	/* rx free descriptors */
-	val = CAS_BASE(RX_CFG_SWIVEL, RX_SWIVEL_OFF_VAL);
-	val |= CAS_BASE(RX_CFG_DESC_RING, RX_DESC_RINGN_INDEX(0));
-	val |= CAS_BASE(RX_CFG_COMP_RING, RX_COMP_RINGN_INDEX(0));
-	if ((N_RX_DESC_RINGS > 1) &&
-	    (cp->cas_flags & CAS_FLAG_REG_PLUS))  /* do desc 2 */
-		val |= CAS_BASE(RX_CFG_DESC_RING1, RX_DESC_RINGN_INDEX(1));
-	writel(val, cp->regs + REG_RX_CFG);
-
-	val = (unsigned long) cp->init_rxds[0] -
-		(unsigned long) cp->init_block;
-	writel((desc_dma + val) >> 32, cp->regs + REG_RX_DB_HI);
-	writel((desc_dma + val) & 0xffffffff, cp->regs + REG_RX_DB_LOW);
-	writel(RX_DESC_RINGN_SIZE(0) - 4, cp->regs + REG_RX_KICK);
-
-	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
-		/* rx desc 2 is for IPSEC packets. however,
-		 * we don't it that for that purpose.
-		 */
-		val = (unsigned long) cp->init_rxds[1] -
-			(unsigned long) cp->init_block;
-		writel((desc_dma + val) >> 32, cp->regs + REG_PLUS_RX_DB1_HI);
-		writel((desc_dma + val) & 0xffffffff, cp->regs +
-		       REG_PLUS_RX_DB1_LOW);
-		writel(RX_DESC_RINGN_SIZE(1) - 4, cp->regs +
-		       REG_PLUS_RX_KICK1);
-	}
-
-	/* rx completion registers */
-	val = (unsigned long) cp->init_rxcs[0] -
-		(unsigned long) cp->init_block;
-	writel((desc_dma + val) >> 32, cp->regs + REG_RX_CB_HI);
-	writel((desc_dma + val) & 0xffffffff, cp->regs + REG_RX_CB_LOW);
-
-	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
-		/* rx comp 2-4 */
-		for (i = 1; i < MAX_RX_COMP_RINGS; i++) {
-			val = (unsigned long) cp->init_rxcs[i] -
-				(unsigned long) cp->init_block;
-			writel((desc_dma + val) >> 32, cp->regs +
-			       REG_PLUS_RX_CBN_HI(i));
-			writel((desc_dma + val) & 0xffffffff, cp->regs +
-			       REG_PLUS_RX_CBN_LOW(i));
-		}
-	}
-
-	/* read selective clear regs to prevent spurious interrupts
-	 * on reset because complete == kick.
-	 * selective clear set up to prevent interrupts on resets
-	 */
-	readl(cp->regs + REG_INTR_STATUS_ALIAS);
-	writel(INTR_RX_DONE | INTR_RX_BUF_UNAVAIL, cp->regs + REG_ALIAS_CLEAR);
-	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
-		for (i = 1; i < N_RX_COMP_RINGS; i++)
-			readl(cp->regs + REG_PLUS_INTRN_STATUS_ALIAS(i));
-
-		/* 2 is different from 3 and 4 */
-		if (N_RX_COMP_RINGS > 1)
-			writel(INTR_RX_DONE_ALT | INTR_RX_BUF_UNAVAIL_1,
-			       cp->regs + REG_PLUS_ALIASN_CLEAR(1));
-
-		for (i = 2; i < N_RX_COMP_RINGS; i++)
-			writel(INTR_RX_DONE_ALT,
-			       cp->regs + REG_PLUS_ALIASN_CLEAR(i));
-	}
-
-	/* set up pause thresholds */
-	val  = CAS_BASE(RX_PAUSE_THRESH_OFF,
-			cp->rx_pause_off / RX_PAUSE_THRESH_QUANTUM);
-	val |= CAS_BASE(RX_PAUSE_THRESH_ON,
-			cp->rx_pause_on / RX_PAUSE_THRESH_QUANTUM);
-	writel(val, cp->regs + REG_RX_PAUSE_THRESH);
-
-	/* zero out dma reassembly buffers */
-	for (i = 0; i < 64; i++) {
-		writel(i, cp->regs + REG_RX_TABLE_ADDR);
-		writel(0x0, cp->regs + REG_RX_TABLE_DATA_LOW);
-		writel(0x0, cp->regs + REG_RX_TABLE_DATA_MID);
-		writel(0x0, cp->regs + REG_RX_TABLE_DATA_HI);
-	}
-
-	/* make sure address register is 0 for normal operation */
-	writel(0x0, cp->regs + REG_RX_CTRL_FIFO_ADDR);
-	writel(0x0, cp->regs + REG_RX_IPP_FIFO_ADDR);
-
-	/* interrupt mitigation */
-#ifdef USE_RX_BLANK
-	val = CAS_BASE(RX_BLANK_INTR_TIME, RX_BLANK_INTR_TIME_VAL);
-	val |= CAS_BASE(RX_BLANK_INTR_PKT, RX_BLANK_INTR_PKT_VAL);
-	writel(val, cp->regs + REG_RX_BLANK);
-#else
-	writel(0x0, cp->regs + REG_RX_BLANK);
-#endif
-
-	/* interrupt generation as a function of low water marks for
-	 * free desc and completion entries. these are used to trigger
-	 * housekeeping for rx descs. we don't use the free interrupt
-	 * as it's not very useful
-	 */
-	/* val = CAS_BASE(RX_AE_THRESH_FREE, RX_AE_FREEN_VAL(0)); */
-	val = CAS_BASE(RX_AE_THRESH_COMP, RX_AE_COMP_VAL);
-	writel(val, cp->regs + REG_RX_AE_THRESH);
-	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
-		val = CAS_BASE(RX_AE1_THRESH_FREE, RX_AE_FREEN_VAL(1));
-		writel(val, cp->regs + REG_PLUS_RX_AE1_THRESH);
-	}
-
-	/* Random early detect registers. useful for congestion avoidance.
-	 * this should be tunable.
-	 */
-	writel(0x0, cp->regs + REG_RX_RED);
-
-	/* receive page sizes. default == 2K (0x800) */
-	val = 0;
-	if (cp->page_size == 0x1000)
-		val = 0x1;
-	else if (cp->page_size == 0x2000)
-		val = 0x2;
-	else if (cp->page_size == 0x4000)
-		val = 0x3;
-
-	/* round mtu + offset. constrain to page size. */
-	size = cp->dev->mtu + 64;
-	if (size > cp->page_size)
-		size = cp->page_size;
-
-	if (size <= 0x400)
-		i = 0x0;
-	else if (size <= 0x800)
-		i = 0x1;
-	else if (size <= 0x1000)
-		i = 0x2;
-	else
-		i = 0x3;
-
-	cp->mtu_stride = 1 << (i + 10);
-	val  = CAS_BASE(RX_PAGE_SIZE, val);
-	val |= CAS_BASE(RX_PAGE_SIZE_MTU_STRIDE, i);
-	val |= CAS_BASE(RX_PAGE_SIZE_MTU_COUNT, cp->page_size >> (i + 10));
-	val |= CAS_BASE(RX_PAGE_SIZE_MTU_OFF, 0x1);
-	writel(val, cp->regs + REG_RX_PAGE_SIZE);
-
-	/* enable the header parser if desired */
-	if (CAS_HP_FIRMWARE == cas_prog_null)
-		return;
-
-	val = CAS_BASE(HP_CFG_NUM_CPU, CAS_NCPUS > 63 ? 0 : CAS_NCPUS);
-	val |= HP_CFG_PARSE_EN | HP_CFG_SYN_INC_MASK;
-	val |= CAS_BASE(HP_CFG_TCP_THRESH, HP_TCP_THRESH_VAL);
-	writel(val, cp->regs + REG_HP_CFG);
-}
-
-static inline void cas_rxc_init(struct cas_rx_comp *rxc)
-{
-	memset(rxc, 0, sizeof(*rxc));
-	rxc->word4 = cpu_to_le64(RX_COMP4_ZERO);
-}
-
-/* NOTE: we use the ENC RX DESC ring for spares. the rx_page[0,1]
- * flipping is protected by the fact that the chip will not
- * hand back the same page index while it's being processed.
- */
-static inline cas_page_t *cas_page_spare(struct cas *cp, const int index)
-{
-	cas_page_t *page = cp->rx_pages[1][index];
-	cas_page_t *new;
-
-	if (page_count(page->buffer) == 1)
-		return page;
-
-	new = cas_page_dequeue(cp);
-	if (new) {
-		spin_lock(&cp->rx_inuse_lock);
-		list_add(&page->list, &cp->rx_inuse_list);
-		spin_unlock(&cp->rx_inuse_lock);
-	}
-	return new;
-}
-
-/* this needs to be changed if we actually use the ENC RX DESC ring */
-static cas_page_t *cas_page_swap(struct cas *cp, const int ring,
-				 const int index)
-{
-	cas_page_t **page0 = cp->rx_pages[0];
-	cas_page_t **page1 = cp->rx_pages[1];
-
-	/* swap if buffer is in use */
-	if (page_count(page0[index]->buffer) > 1) {
-		cas_page_t *new = cas_page_spare(cp, index);
-		if (new) {
-			page1[index] = page0[index];
-			page0[index] = new;
-		}
-	}
-	RX_USED_SET(page0[index], 0);
-	return page0[index];
-}
-
-static void cas_clean_rxds(struct cas *cp)
-{
-	/* only clean ring 0 as ring 1 is used for spare buffers */
-        struct cas_rx_desc *rxd = cp->init_rxds[0];
-	int i, size;
-
-	/* release all rx flows */
-	for (i = 0; i < N_RX_FLOWS; i++) {
-		struct sk_buff *skb;
-		while ((skb = __skb_dequeue(&cp->rx_flows[i]))) {
-			cas_skb_release(skb);
-		}
-	}
-
-	/* initialize descriptors */
-	size = RX_DESC_RINGN_SIZE(0);
-	for (i = 0; i < size; i++) {
-		cas_page_t *page = cas_page_swap(cp, 0, i);
-		rxd[i].buffer = cpu_to_le64(page->dma_addr);
-		rxd[i].index  = cpu_to_le64(CAS_BASE(RX_INDEX_NUM, i) |
-					    CAS_BASE(RX_INDEX_RING, 0));
-	}
-
-	cp->rx_old[0]  = RX_DESC_RINGN_SIZE(0) - 4;
-	cp->rx_last[0] = 0;
-	cp->cas_flags &= ~CAS_FLAG_RXD_POST(0);
-}
-
-static void cas_clean_rxcs(struct cas *cp)
-{
-	int i, j;
-
-	/* take ownership of rx comp descriptors */
-	memset(cp->rx_cur, 0, sizeof(*cp->rx_cur)*N_RX_COMP_RINGS);
-	memset(cp->rx_new, 0, sizeof(*cp->rx_new)*N_RX_COMP_RINGS);
-	for (i = 0; i < N_RX_COMP_RINGS; i++) {
-		struct cas_rx_comp *rxc = cp->init_rxcs[i];
-		for (j = 0; j < RX_COMP_RINGN_SIZE(i); j++) {
-			cas_rxc_init(rxc + j);
-		}
-	}
-}
-
-#if 0
-/* When we get a RX fifo overflow, the RX unit is probably hung
- * so we do the following.
- *
- * If any part of the reset goes wrong, we return 1 and that causes the
- * whole chip to be reset.
- */
-static int cas_rxmac_reset(struct cas *cp)
-{
-	struct net_device *dev = cp->dev;
-	int limit;
-	u32 val;
-
-	/* First, reset MAC RX. */
-	writel(cp->mac_rx_cfg & ~MAC_RX_CFG_EN, cp->regs + REG_MAC_RX_CFG);
-	for (limit = 0; limit < STOP_TRIES; limit++) {
-		if (!(readl(cp->regs + REG_MAC_RX_CFG) & MAC_RX_CFG_EN))
-			break;
-		udelay(10);
-	}
-	if (limit == STOP_TRIES) {
-		netdev_err(dev, "RX MAC will not disable, resetting whole chip\n");
-		return 1;
-	}
-
-	/* Second, disable RX DMA. */
-	writel(0, cp->regs + REG_RX_CFG);
-	for (limit = 0; limit < STOP_TRIES; limit++) {
-		if (!(readl(cp->regs + REG_RX_CFG) & RX_CFG_DMA_EN))
-			break;
-		udelay(10);
-	}
-	if (limit == STOP_TRIES) {
-		netdev_err(dev, "RX DMA will not disable, resetting whole chip\n");
-		return 1;
-	}
-
-	mdelay(5);
-
-	/* Execute RX reset command. */
-	writel(SW_RESET_RX, cp->regs + REG_SW_RESET);
-	for (limit = 0; limit < STOP_TRIES; limit++) {
-		if (!(readl(cp->regs + REG_SW_RESET) & SW_RESET_RX))
-			break;
-		udelay(10);
-	}
-	if (limit == STOP_TRIES) {
-		netdev_err(dev, "RX reset command will not execute, resetting whole chip\n");
-		return 1;
-	}
-
-	/* reset driver rx state */
-	cas_clean_rxds(cp);
-	cas_clean_rxcs(cp);
-
-	/* Now, reprogram the rest of RX unit. */
-	cas_init_rx_dma(cp);
-
-	/* re-enable */
-	val = readl(cp->regs + REG_RX_CFG);
-	writel(val | RX_CFG_DMA_EN, cp->regs + REG_RX_CFG);
-	writel(MAC_RX_FRAME_RECV, cp->regs + REG_MAC_RX_MASK);
-	val = readl(cp->regs + REG_MAC_RX_CFG);
-	writel(val | MAC_RX_CFG_EN, cp->regs + REG_MAC_RX_CFG);
-	return 0;
-}
-#endif
-
-static int cas_rxmac_interrupt(struct net_device *dev, struct cas *cp,
-			       u32 status)
-{
-	u32 stat = readl(cp->regs + REG_MAC_RX_STATUS);
-
-	if (!stat)
-		return 0;
-
-	netif_dbg(cp, intr, cp->dev, "rxmac interrupt, stat: 0x%x\n", stat);
-
-	/* these are all rollovers */
-	spin_lock(&cp->stat_lock[0]);
-	if (stat & MAC_RX_ALIGN_ERR)
-		cp->net_stats[0].rx_frame_errors += 0x10000;
-
-	if (stat & MAC_RX_CRC_ERR)
-		cp->net_stats[0].rx_crc_errors += 0x10000;
-
-	if (stat & MAC_RX_LEN_ERR)
-		cp->net_stats[0].rx_length_errors += 0x10000;
-
-	if (stat & MAC_RX_OVERFLOW) {
-		cp->net_stats[0].rx_over_errors++;
-		cp->net_stats[0].rx_fifo_errors++;
-	}
-
-	/* We do not track MAC_RX_FRAME_COUNT and MAC_RX_VIOL_ERR
-	 * events.
-	 */
-	spin_unlock(&cp->stat_lock[0]);
-	return 0;
-}
-
-static int cas_mac_interrupt(struct net_device *dev, struct cas *cp,
-			     u32 status)
-{
-	u32 stat = readl(cp->regs + REG_MAC_CTRL_STATUS);
-
-	if (!stat)
-		return 0;
-
-	netif_printk(cp, intr, KERN_DEBUG, cp->dev,
-		     "mac interrupt, stat: 0x%x\n", stat);
-
-	/* This interrupt is just for pause frame and pause
-	 * tracking.  It is useful for diagnostics and debug
-	 * but probably by default we will mask these events.
-	 */
-	if (stat & MAC_CTRL_PAUSE_STATE)
-		cp->pause_entered++;
-
-	if (stat & MAC_CTRL_PAUSE_RECEIVED)
-		cp->pause_last_time_recvd = (stat >> 16);
-
-	return 0;
-}
-
-
-/* Must be invoked under cp->lock. */
-static inline int cas_mdio_link_not_up(struct cas *cp)
-{
-	u16 val;
-
-	switch (cp->lstate) {
-	case link_force_ret:
-		netif_info(cp, link, cp->dev, "Autoneg failed again, keeping forced mode\n");
-		cas_phy_write(cp, MII_BMCR, cp->link_fcntl);
-		cp->timer_ticks = 5;
-		cp->lstate = link_force_ok;
-		cp->link_transition = LINK_TRANSITION_LINK_CONFIG;
-		break;
-
-	case link_aneg:
-		val = cas_phy_read(cp, MII_BMCR);
-
-		/* Try forced modes. we try things in the following order:
-		 * 1000 full -> 100 full/half -> 10 half
-		 */
-		val &= ~(BMCR_ANRESTART | BMCR_ANENABLE);
-		val |= BMCR_FULLDPLX;
-		val |= (cp->cas_flags & CAS_FLAG_1000MB_CAP) ?
-			CAS_BMCR_SPEED1000 : BMCR_SPEED100;
-		cas_phy_write(cp, MII_BMCR, val);
-		cp->timer_ticks = 5;
-		cp->lstate = link_force_try;
-		cp->link_transition = LINK_TRANSITION_LINK_CONFIG;
-		break;
-
-	case link_force_try:
-		/* Downgrade from 1000 to 100 to 10 Mbps if necessary. */
-		val = cas_phy_read(cp, MII_BMCR);
-		cp->timer_ticks = 5;
-		if (val & CAS_BMCR_SPEED1000) { /* gigabit */
-			val &= ~CAS_BMCR_SPEED1000;
-			val |= (BMCR_SPEED100 | BMCR_FULLDPLX);
-			cas_phy_write(cp, MII_BMCR, val);
-			break;
-		}
-
-		if (val & BMCR_SPEED100) {
-			if (val & BMCR_FULLDPLX) /* fd failed */
-				val &= ~BMCR_FULLDPLX;
-			else { /* 100Mbps failed */
-				val &= ~BMCR_SPEED100;
-			}
-			cas_phy_write(cp, MII_BMCR, val);
-			break;
-		}
-	default:
-		break;
-	}
-	return 0;
-}
-
-
-/* must be invoked with cp->lock held */
-static int cas_mii_link_check(struct cas *cp, const u16 bmsr)
-{
-	int restart;
-
-	if (bmsr & BMSR_LSTATUS) {
-		/* Ok, here we got a link. If we had it due to a forced
-		 * fallback, and we were configured for autoneg, we
-		 * retry a short autoneg pass. If you know your hub is
-		 * broken, use ethtool ;)
-		 */
-		if ((cp->lstate == link_force_try) &&
-		    (cp->link_cntl & BMCR_ANENABLE)) {
-			cp->lstate = link_force_ret;
-			cp->link_transition = LINK_TRANSITION_LINK_CONFIG;
-			cas_mif_poll(cp, 0);
-			cp->link_fcntl = cas_phy_read(cp, MII_BMCR);
-			cp->timer_ticks = 5;
-			if (cp->opened)
-				netif_info(cp, link, cp->dev,
-					   "Got link after fallback, retrying autoneg once...\n");
-			cas_phy_write(cp, MII_BMCR,
-				      cp->link_fcntl | BMCR_ANENABLE |
-				      BMCR_ANRESTART);
-			cas_mif_poll(cp, 1);
-
-		} else if (cp->lstate != link_up) {
-			cp->lstate = link_up;
-			cp->link_transition = LINK_TRANSITION_LINK_UP;
-
-			if (cp->opened) {
-				cas_set_link_modes(cp);
-				netif_carrier_on(cp->dev);
-			}
-		}
-		return 0;
-	}
-
-	/* link not up. if the link was previously up, we restart the
-	 * whole process
-	 */
-	restart = 0;
-	if (cp->lstate == link_up) {
-		cp->lstate = link_down;
-		cp->link_transition = LINK_TRANSITION_LINK_DOWN;
-
-		netif_carrier_off(cp->dev);
-		if (cp->opened)
-			netif_info(cp, link, cp->dev, "Link down\n");
-		restart = 1;
-
-	} else if (++cp->timer_ticks > 10)
-		cas_mdio_link_not_up(cp);
-
-	return restart;
-}
-
-static int cas_mif_interrupt(struct net_device *dev, struct cas *cp,
-			     u32 status)
-{
-	u32 stat = readl(cp->regs + REG_MIF_STATUS);
-	u16 bmsr;
-
-	/* check for a link change */
-	if (CAS_VAL(MIF_STATUS_POLL_STATUS, stat) == 0)
-		return 0;
-
-	bmsr = CAS_VAL(MIF_STATUS_POLL_DATA, stat);
-	return cas_mii_link_check(cp, bmsr);
-}
-
-static int cas_pci_interrupt(struct net_device *dev, struct cas *cp,
-			     u32 status)
-{
-	u32 stat = readl(cp->regs + REG_PCI_ERR_STATUS);
-
-	if (!stat)
-		return 0;
-
-	netdev_err(dev, "PCI error [%04x:%04x]",
-		   stat, readl(cp->regs + REG_BIM_DIAG));
-
-	/* cassini+ has this reserved */
-	if ((stat & PCI_ERR_BADACK) &&
-	    ((cp->cas_flags & CAS_FLAG_REG_PLUS) == 0))
-		pr_cont(" <No ACK64# during ABS64 cycle>");
-
-	if (stat & PCI_ERR_DTRTO)
-		pr_cont(" <Delayed transaction timeout>");
-	if (stat & PCI_ERR_OTHER)
-		pr_cont(" <other>");
-	if (stat & PCI_ERR_BIM_DMA_WRITE)
-		pr_cont(" <BIM DMA 0 write req>");
-	if (stat & PCI_ERR_BIM_DMA_READ)
-		pr_cont(" <BIM DMA 0 read req>");
-	pr_cont("\n");
-
-	if (stat & PCI_ERR_OTHER) {
-		u16 cfg;
-
-		/* Interrogate PCI config space for the
-		 * true cause.
-		 */
-		pci_read_config_word(cp->pdev, PCI_STATUS, &cfg);
-		netdev_err(dev, "Read PCI cfg space status [%04x]\n", cfg);
-		if (cfg & PCI_STATUS_PARITY)
-			netdev_err(dev, "PCI parity error detected\n");
-		if (cfg & PCI_STATUS_SIG_TARGET_ABORT)
-			netdev_err(dev, "PCI target abort\n");
-		if (cfg & PCI_STATUS_REC_TARGET_ABORT)
-			netdev_err(dev, "PCI master acks target abort\n");
-		if (cfg & PCI_STATUS_REC_MASTER_ABORT)
-			netdev_err(dev, "PCI master abort\n");
-		if (cfg & PCI_STATUS_SIG_SYSTEM_ERROR)
-			netdev_err(dev, "PCI system error SERR#\n");
-		if (cfg & PCI_STATUS_DETECTED_PARITY)
-			netdev_err(dev, "PCI parity error\n");
-
-		/* Write the error bits back to clear them. */
-		cfg &= (PCI_STATUS_PARITY |
-			PCI_STATUS_SIG_TARGET_ABORT |
-			PCI_STATUS_REC_TARGET_ABORT |
-			PCI_STATUS_REC_MASTER_ABORT |
-			PCI_STATUS_SIG_SYSTEM_ERROR |
-			PCI_STATUS_DETECTED_PARITY);
-		pci_write_config_word(cp->pdev, PCI_STATUS, cfg);
-	}
-
-	/* For all PCI errors, we should reset the chip. */
-	return 1;
-}
-
-/* All non-normal interrupt conditions get serviced here.
- * Returns non-zero if we should just exit the interrupt
- * handler right now (ie. if we reset the card which invalidates
- * all of the other original irq status bits).
- */
-static int cas_abnormal_irq(struct net_device *dev, struct cas *cp,
-			    u32 status)
-{
-	if (status & INTR_RX_TAG_ERROR) {
-		/* corrupt RX tag framing */
-		netif_printk(cp, rx_err, KERN_DEBUG, cp->dev,
-			     "corrupt rx tag framing\n");
-		spin_lock(&cp->stat_lock[0]);
-		cp->net_stats[0].rx_errors++;
-		spin_unlock(&cp->stat_lock[0]);
-		goto do_reset;
-	}
-
-	if (status & INTR_RX_LEN_MISMATCH) {
-		/* length mismatch. */
-		netif_printk(cp, rx_err, KERN_DEBUG, cp->dev,
-			     "length mismatch for rx frame\n");
-		spin_lock(&cp->stat_lock[0]);
-		cp->net_stats[0].rx_errors++;
-		spin_unlock(&cp->stat_lock[0]);
-		goto do_reset;
-	}
-
-	if (status & INTR_PCS_STATUS) {
-		if (cas_pcs_interrupt(dev, cp, status))
-			goto do_reset;
-	}
-
-	if (status & INTR_TX_MAC_STATUS) {
-		if (cas_txmac_interrupt(dev, cp, status))
-			goto do_reset;
-	}
-
-	if (status & INTR_RX_MAC_STATUS) {
-		if (cas_rxmac_interrupt(dev, cp, status))
-			goto do_reset;
-	}
-
-	if (status & INTR_MAC_CTRL_STATUS) {
-		if (cas_mac_interrupt(dev, cp, status))
-			goto do_reset;
-	}
-
-	if (status & INTR_MIF_STATUS) {
-		if (cas_mif_interrupt(dev, cp, status))
-			goto do_reset;
-	}
-
-	if (status & INTR_PCI_ERROR_STATUS) {
-		if (cas_pci_interrupt(dev, cp, status))
-			goto do_reset;
-	}
-	return 0;
-
-do_reset:
-#if 1
-	atomic_inc(&cp->reset_task_pending);
-	atomic_inc(&cp->reset_task_pending_all);
-	netdev_err(dev, "reset called in cas_abnormal_irq [0x%x]\n", status);
-	schedule_work(&cp->reset_task);
-#else
-	atomic_set(&cp->reset_task_pending, CAS_RESET_ALL);
-	netdev_err(dev, "reset called in cas_abnormal_irq\n");
-	schedule_work(&cp->reset_task);
-#endif
-	return 1;
-}
-
-/* NOTE: CAS_TABORT returns 1 or 2 so that it can be used when
- *       determining whether to do a netif_stop/wakeup
- */
-#define CAS_TABORT(x)      (((x)->cas_flags & CAS_FLAG_TARGET_ABORT) ? 2 : 1)
-#define CAS_ROUND_PAGE(x)  (((x) + PAGE_SIZE - 1) & PAGE_MASK)
-static inline int cas_calc_tabort(struct cas *cp, const unsigned long addr,
-				  const int len)
-{
-	unsigned long off = addr + len;
-
-	if (CAS_TABORT(cp) == 1)
-		return 0;
-	if ((CAS_ROUND_PAGE(off) - off) > TX_TARGET_ABORT_LEN)
-		return 0;
-	return TX_TARGET_ABORT_LEN;
-}
-
-static inline void cas_tx_ringN(struct cas *cp, int ring, int limit)
-{
-	struct cas_tx_desc *txds;
-	struct sk_buff **skbs;
-	struct net_device *dev = cp->dev;
-	int entry, count;
-
-	spin_lock(&cp->tx_lock[ring]);
-	txds = cp->init_txds[ring];
-	skbs = cp->tx_skbs[ring];
-	entry = cp->tx_old[ring];
-
-	count = TX_BUFF_COUNT(ring, entry, limit);
-	while (entry != limit) {
-		struct sk_buff *skb = skbs[entry];
-		dma_addr_t daddr;
-		u32 dlen;
-		int frag;
-
-		if (!skb) {
-			/* this should never occur */
-			entry = TX_DESC_NEXT(ring, entry);
-			continue;
-		}
-
-		/* however, we might get only a partial skb release. */
-		count -= skb_shinfo(skb)->nr_frags +
-			+ cp->tx_tiny_use[ring][entry].nbufs + 1;
-		if (count < 0)
-			break;
-
-		netif_printk(cp, tx_done, KERN_DEBUG, cp->dev,
-			     "tx[%d] done, slot %d\n", ring, entry);
-
-		skbs[entry] = NULL;
-		cp->tx_tiny_use[ring][entry].nbufs = 0;
-
-		for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) {
-			struct cas_tx_desc *txd = txds + entry;
-
-			daddr = le64_to_cpu(txd->buffer);
-			dlen = CAS_VAL(TX_DESC_BUFLEN,
-				       le64_to_cpu(txd->control));
-			pci_unmap_page(cp->pdev, daddr, dlen,
-				       PCI_DMA_TODEVICE);
-			entry = TX_DESC_NEXT(ring, entry);
-
-			/* tiny buffer may follow */
-			if (cp->tx_tiny_use[ring][entry].used) {
-				cp->tx_tiny_use[ring][entry].used = 0;
-				entry = TX_DESC_NEXT(ring, entry);
-			}
-		}
-
-		spin_lock(&cp->stat_lock[ring]);
-		cp->net_stats[ring].tx_packets++;
-		cp->net_stats[ring].tx_bytes += skb->len;
-		spin_unlock(&cp->stat_lock[ring]);
-		dev_kfree_skb_irq(skb);
-	}
-	cp->tx_old[ring] = entry;
-
-	/* this is wrong for multiple tx rings. the net device needs
-	 * multiple queues for this to do the right thing.  we wait
-	 * for 2*packets to be available when using tiny buffers
-	 */
-	if (netif_queue_stopped(dev) &&
-	    (TX_BUFFS_AVAIL(cp, ring) > CAS_TABORT(cp)*(MAX_SKB_FRAGS + 1)))
-		netif_wake_queue(dev);
-	spin_unlock(&cp->tx_lock[ring]);
-}
-
-static void cas_tx(struct net_device *dev, struct cas *cp,
-		   u32 status)
-{
-        int limit, ring;
-#ifdef USE_TX_COMPWB
-	u64 compwb = le64_to_cpu(cp->init_block->tx_compwb);
-#endif
-	netif_printk(cp, intr, KERN_DEBUG, cp->dev,
-		     "tx interrupt, status: 0x%x, %llx\n",
-		     status, (unsigned long long)compwb);
-	/* process all the rings */
-	for (ring = 0; ring < N_TX_RINGS; ring++) {
-#ifdef USE_TX_COMPWB
-		/* use the completion writeback registers */
-		limit = (CAS_VAL(TX_COMPWB_MSB, compwb) << 8) |
-			CAS_VAL(TX_COMPWB_LSB, compwb);
-		compwb = TX_COMPWB_NEXT(compwb);
-#else
-		limit = readl(cp->regs + REG_TX_COMPN(ring));
-#endif
-		if (cp->tx_old[ring] != limit)
-			cas_tx_ringN(cp, ring, limit);
-	}
-}
-
-
-static int cas_rx_process_pkt(struct cas *cp, struct cas_rx_comp *rxc,
-			      int entry, const u64 *words,
-			      struct sk_buff **skbref)
-{
-	int dlen, hlen, len, i, alloclen;
-	int off, swivel = RX_SWIVEL_OFF_VAL;
-	struct cas_page *page;
-	struct sk_buff *skb;
-	void *addr, *crcaddr;
-	__sum16 csum;
-	char *p;
-
-	hlen = CAS_VAL(RX_COMP2_HDR_SIZE, words[1]);
-	dlen = CAS_VAL(RX_COMP1_DATA_SIZE, words[0]);
-	len  = hlen + dlen;
-
-	if (RX_COPY_ALWAYS || (words[2] & RX_COMP3_SMALL_PKT))
-		alloclen = len;
-	else
-		alloclen = max(hlen, RX_COPY_MIN);
-
-	skb = dev_alloc_skb(alloclen + swivel + cp->crc_size);
-	if (skb == NULL)
-		return -1;
-
-	*skbref = skb;
-	skb_reserve(skb, swivel);
-
-	p = skb->data;
-	addr = crcaddr = NULL;
-	if (hlen) { /* always copy header pages */
-		i = CAS_VAL(RX_COMP2_HDR_INDEX, words[1]);
-		page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
-		off = CAS_VAL(RX_COMP2_HDR_OFF, words[1]) * 0x100 +
-			swivel;
-
-		i = hlen;
-		if (!dlen) /* attach FCS */
-			i += cp->crc_size;
-		pci_dma_sync_single_for_cpu(cp->pdev, page->dma_addr + off, i,
-				    PCI_DMA_FROMDEVICE);
-		addr = cas_page_map(page->buffer);
-		memcpy(p, addr + off, i);
-		pci_dma_sync_single_for_device(cp->pdev, page->dma_addr + off, i,
-				    PCI_DMA_FROMDEVICE);
-		cas_page_unmap(addr);
-		RX_USED_ADD(page, 0x100);
-		p += hlen;
-		swivel = 0;
-	}
-
-
-	if (alloclen < (hlen + dlen)) {
-		skb_frag_t *frag = skb_shinfo(skb)->frags;
-
-		/* normal or jumbo packets. we use frags */
-		i = CAS_VAL(RX_COMP1_DATA_INDEX, words[0]);
-		page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
-		off = CAS_VAL(RX_COMP1_DATA_OFF, words[0]) + swivel;
-
-		hlen = min(cp->page_size - off, dlen);
-		if (hlen < 0) {
-			netif_printk(cp, rx_err, KERN_DEBUG, cp->dev,
-				     "rx page overflow: %d\n", hlen);
-			dev_kfree_skb_irq(skb);
-			return -1;
-		}
-		i = hlen;
-		if (i == dlen)  /* attach FCS */
-			i += cp->crc_size;
-		pci_dma_sync_single_for_cpu(cp->pdev, page->dma_addr + off, i,
-				    PCI_DMA_FROMDEVICE);
-
-		/* make sure we always copy a header */
-		swivel = 0;
-		if (p == (char *) skb->data) { /* not split */
-			addr = cas_page_map(page->buffer);
-			memcpy(p, addr + off, RX_COPY_MIN);
-			pci_dma_sync_single_for_device(cp->pdev, page->dma_addr + off, i,
-					PCI_DMA_FROMDEVICE);
-			cas_page_unmap(addr);
-			off += RX_COPY_MIN;
-			swivel = RX_COPY_MIN;
-			RX_USED_ADD(page, cp->mtu_stride);
-		} else {
-			RX_USED_ADD(page, hlen);
-		}
-		skb_put(skb, alloclen);
-
-		skb_shinfo(skb)->nr_frags++;
-		skb->data_len += hlen - swivel;
-		skb->truesize += hlen - swivel;
-		skb->len      += hlen - swivel;
-
-		get_page(page->buffer);
-		frag->page = page->buffer;
-		frag->page_offset = off;
-		frag->size = hlen - swivel;
-
-		/* any more data? */
-		if ((words[0] & RX_COMP1_SPLIT_PKT) && ((dlen -= hlen) > 0)) {
-			hlen = dlen;
-			off = 0;
-
-			i = CAS_VAL(RX_COMP2_NEXT_INDEX, words[1]);
-			page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
-			pci_dma_sync_single_for_cpu(cp->pdev, page->dma_addr,
-					    hlen + cp->crc_size,
-					    PCI_DMA_FROMDEVICE);
-			pci_dma_sync_single_for_device(cp->pdev, page->dma_addr,
-					    hlen + cp->crc_size,
-					    PCI_DMA_FROMDEVICE);
-
-			skb_shinfo(skb)->nr_frags++;
-			skb->data_len += hlen;
-			skb->len      += hlen;
-			frag++;
-
-			get_page(page->buffer);
-			frag->page = page->buffer;
-			frag->page_offset = 0;
-			frag->size = hlen;
-			RX_USED_ADD(page, hlen + cp->crc_size);
-		}
-
-		if (cp->crc_size) {
-			addr = cas_page_map(page->buffer);
-			crcaddr  = addr + off + hlen;
-		}
-
-	} else {
-		/* copying packet */
-		if (!dlen)
-			goto end_copy_pkt;
-
-		i = CAS_VAL(RX_COMP1_DATA_INDEX, words[0]);
-		page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
-		off = CAS_VAL(RX_COMP1_DATA_OFF, words[0]) + swivel;
-		hlen = min(cp->page_size - off, dlen);
-		if (hlen < 0) {
-			netif_printk(cp, rx_err, KERN_DEBUG, cp->dev,
-				     "rx page overflow: %d\n", hlen);
-			dev_kfree_skb_irq(skb);
-			return -1;
-		}
-		i = hlen;
-		if (i == dlen) /* attach FCS */
-			i += cp->crc_size;
-		pci_dma_sync_single_for_cpu(cp->pdev, page->dma_addr + off, i,
-				    PCI_DMA_FROMDEVICE);
-		addr = cas_page_map(page->buffer);
-		memcpy(p, addr + off, i);
-		pci_dma_sync_single_for_device(cp->pdev, page->dma_addr + off, i,
-				    PCI_DMA_FROMDEVICE);
-		cas_page_unmap(addr);
-		if (p == (char *) skb->data) /* not split */
-			RX_USED_ADD(page, cp->mtu_stride);
-		else
-			RX_USED_ADD(page, i);
-
-		/* any more data? */
-		if ((words[0] & RX_COMP1_SPLIT_PKT) && ((dlen -= hlen) > 0)) {
-			p += hlen;
-			i = CAS_VAL(RX_COMP2_NEXT_INDEX, words[1]);
-			page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
-			pci_dma_sync_single_for_cpu(cp->pdev, page->dma_addr,
-					    dlen + cp->crc_size,
-					    PCI_DMA_FROMDEVICE);
-			addr = cas_page_map(page->buffer);
-			memcpy(p, addr, dlen + cp->crc_size);
-			pci_dma_sync_single_for_device(cp->pdev, page->dma_addr,
-					    dlen + cp->crc_size,
-					    PCI_DMA_FROMDEVICE);
-			cas_page_unmap(addr);
-			RX_USED_ADD(page, dlen + cp->crc_size);
-		}
-end_copy_pkt:
-		if (cp->crc_size) {
-			addr    = NULL;
-			crcaddr = skb->data + alloclen;
-		}
-		skb_put(skb, alloclen);
-	}
-
-	csum = (__force __sum16)htons(CAS_VAL(RX_COMP4_TCP_CSUM, words[3]));
-	if (cp->crc_size) {
-		/* checksum includes FCS. strip it out. */
-		csum = csum_fold(csum_partial(crcaddr, cp->crc_size,
-					      csum_unfold(csum)));
-		if (addr)
-			cas_page_unmap(addr);
-	}
-	skb->protocol = eth_type_trans(skb, cp->dev);
-	if (skb->protocol == htons(ETH_P_IP)) {
-		skb->csum = csum_unfold(~csum);
-		skb->ip_summed = CHECKSUM_COMPLETE;
-	} else
-		skb_checksum_none_assert(skb);
-	return len;
-}
-
-
-/* we can handle up to 64 rx flows at a time. we do the same thing
- * as nonreassm except that we batch up the buffers.
- * NOTE: we currently just treat each flow as a bunch of packets that
- *       we pass up. a better way would be to coalesce the packets
- *       into a jumbo packet. to do that, we need to do the following:
- *       1) the first packet will have a clean split between header and
- *          data. save both.
- *       2) each time the next flow packet comes in, extend the
- *          data length and merge the checksums.
- *       3) on flow release, fix up the header.
- *       4) make sure the higher layer doesn't care.
- * because packets get coalesced, we shouldn't run into fragment count
- * issues.
- */
-static inline void cas_rx_flow_pkt(struct cas *cp, const u64 *words,
-				   struct sk_buff *skb)
-{
-	int flowid = CAS_VAL(RX_COMP3_FLOWID, words[2]) & (N_RX_FLOWS - 1);
-	struct sk_buff_head *flow = &cp->rx_flows[flowid];
-
-	/* this is protected at a higher layer, so no need to
-	 * do any additional locking here. stick the buffer
-	 * at the end.
-	 */
-	__skb_queue_tail(flow, skb);
-	if (words[0] & RX_COMP1_RELEASE_FLOW) {
-		while ((skb = __skb_dequeue(flow))) {
-			cas_skb_release(skb);
-		}
-	}
-}
-
-/* put rx descriptor back on ring. if a buffer is in use by a higher
- * layer, this will need to put in a replacement.
- */
-static void cas_post_page(struct cas *cp, const int ring, const int index)
-{
-	cas_page_t *new;
-	int entry;
-
-	entry = cp->rx_old[ring];
-
-	new = cas_page_swap(cp, ring, index);
-	cp->init_rxds[ring][entry].buffer = cpu_to_le64(new->dma_addr);
-	cp->init_rxds[ring][entry].index  =
-		cpu_to_le64(CAS_BASE(RX_INDEX_NUM, index) |
-			    CAS_BASE(RX_INDEX_RING, ring));
-
-	entry = RX_DESC_ENTRY(ring, entry + 1);
-	cp->rx_old[ring] = entry;
-
-	if (entry % 4)
-		return;
-
-	if (ring == 0)
-		writel(entry, cp->regs + REG_RX_KICK);
-	else if ((N_RX_DESC_RINGS > 1) &&
-		 (cp->cas_flags & CAS_FLAG_REG_PLUS))
-		writel(entry, cp->regs + REG_PLUS_RX_KICK1);
-}
-
-
-/* only when things are bad */
-static int cas_post_rxds_ringN(struct cas *cp, int ring, int num)
-{
-	unsigned int entry, last, count, released;
-	int cluster;
-	cas_page_t **page = cp->rx_pages[ring];
-
-	entry = cp->rx_old[ring];
-
-	netif_printk(cp, intr, KERN_DEBUG, cp->dev,
-		     "rxd[%d] interrupt, done: %d\n", ring, entry);
-
-	cluster = -1;
-	count = entry & 0x3;
-	last = RX_DESC_ENTRY(ring, num ? entry + num - 4: entry - 4);
-	released = 0;
-	while (entry != last) {
-		/* make a new buffer if it's still in use */
-		if (page_count(page[entry]->buffer) > 1) {
-			cas_page_t *new = cas_page_dequeue(cp);
-			if (!new) {
-				/* let the timer know that we need to
-				 * do this again
-				 */
-				cp->cas_flags |= CAS_FLAG_RXD_POST(ring);
-				if (!timer_pending(&cp->link_timer))
-					mod_timer(&cp->link_timer, jiffies +
-						  CAS_LINK_FAST_TIMEOUT);
-				cp->rx_old[ring]  = entry;
-				cp->rx_last[ring] = num ? num - released : 0;
-				return -ENOMEM;
-			}
-			spin_lock(&cp->rx_inuse_lock);
-			list_add(&page[entry]->list, &cp->rx_inuse_list);
-			spin_unlock(&cp->rx_inuse_lock);
-			cp->init_rxds[ring][entry].buffer =
-				cpu_to_le64(new->dma_addr);
-			page[entry] = new;
-
-		}
-
-		if (++count == 4) {
-			cluster = entry;
-			count = 0;
-		}
-		released++;
-		entry = RX_DESC_ENTRY(ring, entry + 1);
-	}
-	cp->rx_old[ring] = entry;
-
-	if (cluster < 0)
-		return 0;
-
-	if (ring == 0)
-		writel(cluster, cp->regs + REG_RX_KICK);
-	else if ((N_RX_DESC_RINGS > 1) &&
-		 (cp->cas_flags & CAS_FLAG_REG_PLUS))
-		writel(cluster, cp->regs + REG_PLUS_RX_KICK1);
-	return 0;
-}
-
-
-/* process a completion ring. packets are set up in three basic ways:
- * small packets: should be copied header + data in single buffer.
- * large packets: header and data in a single buffer.
- * split packets: header in a separate buffer from data.
- *                data may be in multiple pages. data may be > 256
- *                bytes but in a single page.
- *
- * NOTE: RX page posting is done in this routine as well. while there's
- *       the capability of using multiple RX completion rings, it isn't
- *       really worthwhile due to the fact that the page posting will
- *       force serialization on the single descriptor ring.
- */
-static int cas_rx_ringN(struct cas *cp, int ring, int budget)
-{
-	struct cas_rx_comp *rxcs = cp->init_rxcs[ring];
-	int entry, drops;
-	int npackets = 0;
-
-	netif_printk(cp, intr, KERN_DEBUG, cp->dev,
-		     "rx[%d] interrupt, done: %d/%d\n",
-		     ring,
-		     readl(cp->regs + REG_RX_COMP_HEAD), cp->rx_new[ring]);
-
-	entry = cp->rx_new[ring];
-	drops = 0;
-	while (1) {
-		struct cas_rx_comp *rxc = rxcs + entry;
-		struct sk_buff *uninitialized_var(skb);
-		int type, len;
-		u64 words[4];
-		int i, dring;
-
-		words[0] = le64_to_cpu(rxc->word1);
-		words[1] = le64_to_cpu(rxc->word2);
-		words[2] = le64_to_cpu(rxc->word3);
-		words[3] = le64_to_cpu(rxc->word4);
-
-		/* don't touch if still owned by hw */
-		type = CAS_VAL(RX_COMP1_TYPE, words[0]);
-		if (type == 0)
-			break;
-
-		/* hw hasn't cleared the zero bit yet */
-		if (words[3] & RX_COMP4_ZERO) {
-			break;
-		}
-
-		/* get info on the packet */
-		if (words[3] & (RX_COMP4_LEN_MISMATCH | RX_COMP4_BAD)) {
-			spin_lock(&cp->stat_lock[ring]);
-			cp->net_stats[ring].rx_errors++;
-			if (words[3] & RX_COMP4_LEN_MISMATCH)
-				cp->net_stats[ring].rx_length_errors++;
-			if (words[3] & RX_COMP4_BAD)
-				cp->net_stats[ring].rx_crc_errors++;
-			spin_unlock(&cp->stat_lock[ring]);
-
-			/* We'll just return it to Cassini. */
-		drop_it:
-			spin_lock(&cp->stat_lock[ring]);
-			++cp->net_stats[ring].rx_dropped;
-			spin_unlock(&cp->stat_lock[ring]);
-			goto next;
-		}
-
-		len = cas_rx_process_pkt(cp, rxc, entry, words, &skb);
-		if (len < 0) {
-			++drops;
-			goto drop_it;
-		}
-
-		/* see if it's a flow re-assembly or not. the driver
-		 * itself handles release back up.
-		 */
-		if (RX_DONT_BATCH || (type == 0x2)) {
-			/* non-reassm: these always get released */
-			cas_skb_release(skb);
-		} else {
-			cas_rx_flow_pkt(cp, words, skb);
-		}
-
-		spin_lock(&cp->stat_lock[ring]);
-		cp->net_stats[ring].rx_packets++;
-		cp->net_stats[ring].rx_bytes += len;
-		spin_unlock(&cp->stat_lock[ring]);
-
-	next:
-		npackets++;
-
-		/* should it be released? */
-		if (words[0] & RX_COMP1_RELEASE_HDR) {
-			i = CAS_VAL(RX_COMP2_HDR_INDEX, words[1]);
-			dring = CAS_VAL(RX_INDEX_RING, i);
-			i = CAS_VAL(RX_INDEX_NUM, i);
-			cas_post_page(cp, dring, i);
-		}
-
-		if (words[0] & RX_COMP1_RELEASE_DATA) {
-			i = CAS_VAL(RX_COMP1_DATA_INDEX, words[0]);
-			dring = CAS_VAL(RX_INDEX_RING, i);
-			i = CAS_VAL(RX_INDEX_NUM, i);
-			cas_post_page(cp, dring, i);
-		}
-
-		if (words[0] & RX_COMP1_RELEASE_NEXT) {
-			i = CAS_VAL(RX_COMP2_NEXT_INDEX, words[1]);
-			dring = CAS_VAL(RX_INDEX_RING, i);
-			i = CAS_VAL(RX_INDEX_NUM, i);
-			cas_post_page(cp, dring, i);
-		}
-
-		/* skip to the next entry */
-		entry = RX_COMP_ENTRY(ring, entry + 1 +
-				      CAS_VAL(RX_COMP1_SKIP, words[0]));
-#ifdef USE_NAPI
-		if (budget && (npackets >= budget))
-			break;
-#endif
-	}
-	cp->rx_new[ring] = entry;
-
-	if (drops)
-		netdev_info(cp->dev, "Memory squeeze, deferring packet\n");
-	return npackets;
-}
-
-
-/* put completion entries back on the ring */
-static void cas_post_rxcs_ringN(struct net_device *dev,
-				struct cas *cp, int ring)
-{
-	struct cas_rx_comp *rxc = cp->init_rxcs[ring];
-	int last, entry;
-
-	last = cp->rx_cur[ring];
-	entry = cp->rx_new[ring];
-	netif_printk(cp, intr, KERN_DEBUG, dev,
-		     "rxc[%d] interrupt, done: %d/%d\n",
-		     ring, readl(cp->regs + REG_RX_COMP_HEAD), entry);
-
-	/* zero and re-mark descriptors */
-	while (last != entry) {
-		cas_rxc_init(rxc + last);
-		last = RX_COMP_ENTRY(ring, last + 1);
-	}
-	cp->rx_cur[ring] = last;
-
-	if (ring == 0)
-		writel(last, cp->regs + REG_RX_COMP_TAIL);
-	else if (cp->cas_flags & CAS_FLAG_REG_PLUS)
-		writel(last, cp->regs + REG_PLUS_RX_COMPN_TAIL(ring));
-}
-
-
-
-/* cassini can use all four PCI interrupts for the completion ring.
- * rings 3 and 4 are identical
- */
-#if defined(USE_PCI_INTC) || defined(USE_PCI_INTD)
-static inline void cas_handle_irqN(struct net_device *dev,
-				   struct cas *cp, const u32 status,
-				   const int ring)
-{
-	if (status & (INTR_RX_COMP_FULL_ALT | INTR_RX_COMP_AF_ALT))
-		cas_post_rxcs_ringN(dev, cp, ring);
-}
-
-static irqreturn_t cas_interruptN(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-	struct cas *cp = netdev_priv(dev);
-	unsigned long flags;
-	int ring;
-	u32 status = readl(cp->regs + REG_PLUS_INTRN_STATUS(ring));
-
-	/* check for shared irq */
-	if (status == 0)
-		return IRQ_NONE;
-
-	ring = (irq == cp->pci_irq_INTC) ? 2 : 3;
-	spin_lock_irqsave(&cp->lock, flags);
-	if (status & INTR_RX_DONE_ALT) { /* handle rx separately */
-#ifdef USE_NAPI
-		cas_mask_intr(cp);
-		napi_schedule(&cp->napi);
-#else
-		cas_rx_ringN(cp, ring, 0);
-#endif
-		status &= ~INTR_RX_DONE_ALT;
-	}
-
-	if (status)
-		cas_handle_irqN(dev, cp, status, ring);
-	spin_unlock_irqrestore(&cp->lock, flags);
-	return IRQ_HANDLED;
-}
-#endif
-
-#ifdef USE_PCI_INTB
-/* everything but rx packets */
-static inline void cas_handle_irq1(struct cas *cp, const u32 status)
-{
-	if (status & INTR_RX_BUF_UNAVAIL_1) {
-		/* Frame arrived, no free RX buffers available.
-		 * NOTE: we can get this on a link transition. */
-		cas_post_rxds_ringN(cp, 1, 0);
-		spin_lock(&cp->stat_lock[1]);
-		cp->net_stats[1].rx_dropped++;
-		spin_unlock(&cp->stat_lock[1]);
-	}
-
-	if (status & INTR_RX_BUF_AE_1)
-		cas_post_rxds_ringN(cp, 1, RX_DESC_RINGN_SIZE(1) -
-				    RX_AE_FREEN_VAL(1));
-
-	if (status & (INTR_RX_COMP_AF | INTR_RX_COMP_FULL))
-		cas_post_rxcs_ringN(cp, 1);
-}
-
-/* ring 2 handles a few more events than 3 and 4 */
-static irqreturn_t cas_interrupt1(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-	struct cas *cp = netdev_priv(dev);
-	unsigned long flags;
-	u32 status = readl(cp->regs + REG_PLUS_INTRN_STATUS(1));
-
-	/* check for shared interrupt */
-	if (status == 0)
-		return IRQ_NONE;
-
-	spin_lock_irqsave(&cp->lock, flags);
-	if (status & INTR_RX_DONE_ALT) { /* handle rx separately */
-#ifdef USE_NAPI
-		cas_mask_intr(cp);
-		napi_schedule(&cp->napi);
-#else
-		cas_rx_ringN(cp, 1, 0);
-#endif
-		status &= ~INTR_RX_DONE_ALT;
-	}
-	if (status)
-		cas_handle_irq1(cp, status);
-	spin_unlock_irqrestore(&cp->lock, flags);
-	return IRQ_HANDLED;
-}
-#endif
-
-static inline void cas_handle_irq(struct net_device *dev,
-				  struct cas *cp, const u32 status)
-{
-	/* housekeeping interrupts */
-	if (status & INTR_ERROR_MASK)
-		cas_abnormal_irq(dev, cp, status);
-
-	if (status & INTR_RX_BUF_UNAVAIL) {
-		/* Frame arrived, no free RX buffers available.
-		 * NOTE: we can get this on a link transition.
-		 */
-		cas_post_rxds_ringN(cp, 0, 0);
-		spin_lock(&cp->stat_lock[0]);
-		cp->net_stats[0].rx_dropped++;
-		spin_unlock(&cp->stat_lock[0]);
-	} else if (status & INTR_RX_BUF_AE) {
-		cas_post_rxds_ringN(cp, 0, RX_DESC_RINGN_SIZE(0) -
-				    RX_AE_FREEN_VAL(0));
-	}
-
-	if (status & (INTR_RX_COMP_AF | INTR_RX_COMP_FULL))
-		cas_post_rxcs_ringN(dev, cp, 0);
-}
-
-static irqreturn_t cas_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-	struct cas *cp = netdev_priv(dev);
-	unsigned long flags;
-	u32 status = readl(cp->regs + REG_INTR_STATUS);
-
-	if (status == 0)
-		return IRQ_NONE;
-
-	spin_lock_irqsave(&cp->lock, flags);
-	if (status & (INTR_TX_ALL | INTR_TX_INTME)) {
-		cas_tx(dev, cp, status);
-		status &= ~(INTR_TX_ALL | INTR_TX_INTME);
-	}
-
-	if (status & INTR_RX_DONE) {
-#ifdef USE_NAPI
-		cas_mask_intr(cp);
-		napi_schedule(&cp->napi);
-#else
-		cas_rx_ringN(cp, 0, 0);
-#endif
-		status &= ~INTR_RX_DONE;
-	}
-
-	if (status)
-		cas_handle_irq(dev, cp, status);
-	spin_unlock_irqrestore(&cp->lock, flags);
-	return IRQ_HANDLED;
-}
-
-
-#ifdef USE_NAPI
-static int cas_poll(struct napi_struct *napi, int budget)
-{
-	struct cas *cp = container_of(napi, struct cas, napi);
-	struct net_device *dev = cp->dev;
-	int i, enable_intr, credits;
-	u32 status = readl(cp->regs + REG_INTR_STATUS);
-	unsigned long flags;
-
-	spin_lock_irqsave(&cp->lock, flags);
-	cas_tx(dev, cp, status);
-	spin_unlock_irqrestore(&cp->lock, flags);
-
-	/* NAPI rx packets. we spread the credits across all of the
-	 * rxc rings
-	 *
-	 * to make sure we're fair with the work we loop through each
-	 * ring N_RX_COMP_RING times with a request of
-	 * budget / N_RX_COMP_RINGS
-	 */
-	enable_intr = 1;
-	credits = 0;
-	for (i = 0; i < N_RX_COMP_RINGS; i++) {
-		int j;
-		for (j = 0; j < N_RX_COMP_RINGS; j++) {
-			credits += cas_rx_ringN(cp, j, budget / N_RX_COMP_RINGS);
-			if (credits >= budget) {
-				enable_intr = 0;
-				goto rx_comp;
-			}
-		}
-	}
-
-rx_comp:
-	/* final rx completion */
-	spin_lock_irqsave(&cp->lock, flags);
-	if (status)
-		cas_handle_irq(dev, cp, status);
-
-#ifdef USE_PCI_INTB
-	if (N_RX_COMP_RINGS > 1) {
-		status = readl(cp->regs + REG_PLUS_INTRN_STATUS(1));
-		if (status)
-			cas_handle_irq1(dev, cp, status);
-	}
-#endif
-
-#ifdef USE_PCI_INTC
-	if (N_RX_COMP_RINGS > 2) {
-		status = readl(cp->regs + REG_PLUS_INTRN_STATUS(2));
-		if (status)
-			cas_handle_irqN(dev, cp, status, 2);
-	}
-#endif
-
-#ifdef USE_PCI_INTD
-	if (N_RX_COMP_RINGS > 3) {
-		status = readl(cp->regs + REG_PLUS_INTRN_STATUS(3));
-		if (status)
-			cas_handle_irqN(dev, cp, status, 3);
-	}
-#endif
-	spin_unlock_irqrestore(&cp->lock, flags);
-	if (enable_intr) {
-		napi_complete(napi);
-		cas_unmask_intr(cp);
-	}
-	return credits;
-}
-#endif
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void cas_netpoll(struct net_device *dev)
-{
-	struct cas *cp = netdev_priv(dev);
-
-	cas_disable_irq(cp, 0);
-	cas_interrupt(cp->pdev->irq, dev);
-	cas_enable_irq(cp, 0);
-
-#ifdef USE_PCI_INTB
-	if (N_RX_COMP_RINGS > 1) {
-		/* cas_interrupt1(); */
-	}
-#endif
-#ifdef USE_PCI_INTC
-	if (N_RX_COMP_RINGS > 2) {
-		/* cas_interruptN(); */
-	}
-#endif
-#ifdef USE_PCI_INTD
-	if (N_RX_COMP_RINGS > 3) {
-		/* cas_interruptN(); */
-	}
-#endif
-}
-#endif
-
-static void cas_tx_timeout(struct net_device *dev)
-{
-	struct cas *cp = netdev_priv(dev);
-
-	netdev_err(dev, "transmit timed out, resetting\n");
-	if (!cp->hw_running) {
-		netdev_err(dev, "hrm.. hw not running!\n");
-		return;
-	}
-
-	netdev_err(dev, "MIF_STATE[%08x]\n",
-		   readl(cp->regs + REG_MIF_STATE_MACHINE));
-
-	netdev_err(dev, "MAC_STATE[%08x]\n",
-		   readl(cp->regs + REG_MAC_STATE_MACHINE));
-
-	netdev_err(dev, "TX_STATE[%08x:%08x:%08x] FIFO[%08x:%08x:%08x] SM1[%08x] SM2[%08x]\n",
-		   readl(cp->regs + REG_TX_CFG),
-		   readl(cp->regs + REG_MAC_TX_STATUS),
-		   readl(cp->regs + REG_MAC_TX_CFG),
-		   readl(cp->regs + REG_TX_FIFO_PKT_CNT),
-		   readl(cp->regs + REG_TX_FIFO_WRITE_PTR),
-		   readl(cp->regs + REG_TX_FIFO_READ_PTR),
-		   readl(cp->regs + REG_TX_SM_1),
-		   readl(cp->regs + REG_TX_SM_2));
-
-	netdev_err(dev, "RX_STATE[%08x:%08x:%08x]\n",
-		   readl(cp->regs + REG_RX_CFG),
-		   readl(cp->regs + REG_MAC_RX_STATUS),
-		   readl(cp->regs + REG_MAC_RX_CFG));
-
-	netdev_err(dev, "HP_STATE[%08x:%08x:%08x:%08x]\n",
-		   readl(cp->regs + REG_HP_STATE_MACHINE),
-		   readl(cp->regs + REG_HP_STATUS0),
-		   readl(cp->regs + REG_HP_STATUS1),
-		   readl(cp->regs + REG_HP_STATUS2));
-
-#if 1
-	atomic_inc(&cp->reset_task_pending);
-	atomic_inc(&cp->reset_task_pending_all);
-	schedule_work(&cp->reset_task);
-#else
-	atomic_set(&cp->reset_task_pending, CAS_RESET_ALL);
-	schedule_work(&cp->reset_task);
-#endif
-}
-
-static inline int cas_intme(int ring, int entry)
-{
-	/* Algorithm: IRQ every 1/2 of descriptors. */
-	if (!(entry & ((TX_DESC_RINGN_SIZE(ring) >> 1) - 1)))
-		return 1;
-	return 0;
-}
-
-
-static void cas_write_txd(struct cas *cp, int ring, int entry,
-			  dma_addr_t mapping, int len, u64 ctrl, int last)
-{
-	struct cas_tx_desc *txd = cp->init_txds[ring] + entry;
-
-	ctrl |= CAS_BASE(TX_DESC_BUFLEN, len);
-	if (cas_intme(ring, entry))
-		ctrl |= TX_DESC_INTME;
-	if (last)
-		ctrl |= TX_DESC_EOF;
-	txd->control = cpu_to_le64(ctrl);
-	txd->buffer = cpu_to_le64(mapping);
-}
-
-static inline void *tx_tiny_buf(struct cas *cp, const int ring,
-				const int entry)
-{
-	return cp->tx_tiny_bufs[ring] + TX_TINY_BUF_LEN*entry;
-}
-
-static inline dma_addr_t tx_tiny_map(struct cas *cp, const int ring,
-				     const int entry, const int tentry)
-{
-	cp->tx_tiny_use[ring][tentry].nbufs++;
-	cp->tx_tiny_use[ring][entry].used = 1;
-	return cp->tx_tiny_dvma[ring] + TX_TINY_BUF_LEN*entry;
-}
-
-static inline int cas_xmit_tx_ringN(struct cas *cp, int ring,
-				    struct sk_buff *skb)
-{
-	struct net_device *dev = cp->dev;
-	int entry, nr_frags, frag, tabort, tentry;
-	dma_addr_t mapping;
-	unsigned long flags;
-	u64 ctrl;
-	u32 len;
-
-	spin_lock_irqsave(&cp->tx_lock[ring], flags);
-
-	/* This is a hard error, log it. */
-	if (TX_BUFFS_AVAIL(cp, ring) <=
-	    CAS_TABORT(cp)*(skb_shinfo(skb)->nr_frags + 1)) {
-		netif_stop_queue(dev);
-		spin_unlock_irqrestore(&cp->tx_lock[ring], flags);
-		netdev_err(dev, "BUG! Tx Ring full when queue awake!\n");
-		return 1;
-	}
-
-	ctrl = 0;
-	if (skb->ip_summed == CHECKSUM_PARTIAL) {
-		const u64 csum_start_off = skb_checksum_start_offset(skb);
-		const u64 csum_stuff_off = csum_start_off + skb->csum_offset;
-
-		ctrl =  TX_DESC_CSUM_EN |
-			CAS_BASE(TX_DESC_CSUM_START, csum_start_off) |
-			CAS_BASE(TX_DESC_CSUM_STUFF, csum_stuff_off);
-	}
-
-	entry = cp->tx_new[ring];
-	cp->tx_skbs[ring][entry] = skb;
-
-	nr_frags = skb_shinfo(skb)->nr_frags;
-	len = skb_headlen(skb);
-	mapping = pci_map_page(cp->pdev, virt_to_page(skb->data),
-			       offset_in_page(skb->data), len,
-			       PCI_DMA_TODEVICE);
-
-	tentry = entry;
-	tabort = cas_calc_tabort(cp, (unsigned long) skb->data, len);
-	if (unlikely(tabort)) {
-		/* NOTE: len is always >  tabort */
-		cas_write_txd(cp, ring, entry, mapping, len - tabort,
-			      ctrl | TX_DESC_SOF, 0);
-		entry = TX_DESC_NEXT(ring, entry);
-
-		skb_copy_from_linear_data_offset(skb, len - tabort,
-			      tx_tiny_buf(cp, ring, entry), tabort);
-		mapping = tx_tiny_map(cp, ring, entry, tentry);
-		cas_write_txd(cp, ring, entry, mapping, tabort, ctrl,
-			      (nr_frags == 0));
-	} else {
-		cas_write_txd(cp, ring, entry, mapping, len, ctrl |
-			      TX_DESC_SOF, (nr_frags == 0));
-	}
-	entry = TX_DESC_NEXT(ring, entry);
-
-	for (frag = 0; frag < nr_frags; frag++) {
-		skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
-
-		len = fragp->size;
-		mapping = pci_map_page(cp->pdev, fragp->page,
-				       fragp->page_offset, len,
-				       PCI_DMA_TODEVICE);
-
-		tabort = cas_calc_tabort(cp, fragp->page_offset, len);
-		if (unlikely(tabort)) {
-			void *addr;
-
-			/* NOTE: len is always > tabort */
-			cas_write_txd(cp, ring, entry, mapping, len - tabort,
-				      ctrl, 0);
-			entry = TX_DESC_NEXT(ring, entry);
-
-			addr = cas_page_map(fragp->page);
-			memcpy(tx_tiny_buf(cp, ring, entry),
-			       addr + fragp->page_offset + len - tabort,
-			       tabort);
-			cas_page_unmap(addr);
-			mapping = tx_tiny_map(cp, ring, entry, tentry);
-			len     = tabort;
-		}
-
-		cas_write_txd(cp, ring, entry, mapping, len, ctrl,
-			      (frag + 1 == nr_frags));
-		entry = TX_DESC_NEXT(ring, entry);
-	}
-
-	cp->tx_new[ring] = entry;
-	if (TX_BUFFS_AVAIL(cp, ring) <= CAS_TABORT(cp)*(MAX_SKB_FRAGS + 1))
-		netif_stop_queue(dev);
-
-	netif_printk(cp, tx_queued, KERN_DEBUG, dev,
-		     "tx[%d] queued, slot %d, skblen %d, avail %d\n",
-		     ring, entry, skb->len, TX_BUFFS_AVAIL(cp, ring));
-	writel(entry, cp->regs + REG_TX_KICKN(ring));
-	spin_unlock_irqrestore(&cp->tx_lock[ring], flags);
-	return 0;
-}
-
-static netdev_tx_t cas_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct cas *cp = netdev_priv(dev);
-
-	/* this is only used as a load-balancing hint, so it doesn't
-	 * need to be SMP safe
-	 */
-	static int ring;
-
-	if (skb_padto(skb, cp->min_frame_size))
-		return NETDEV_TX_OK;
-
-	/* XXX: we need some higher-level QoS hooks to steer packets to
-	 *      individual queues.
-	 */
-	if (cas_xmit_tx_ringN(cp, ring++ & N_TX_RINGS_MASK, skb))
-		return NETDEV_TX_BUSY;
-	return NETDEV_TX_OK;
-}
-
-static void cas_init_tx_dma(struct cas *cp)
-{
-	u64 desc_dma = cp->block_dvma;
-	unsigned long off;
-	u32 val;
-	int i;
-
-	/* set up tx completion writeback registers. must be 8-byte aligned */
-#ifdef USE_TX_COMPWB
-	off = offsetof(struct cas_init_block, tx_compwb);
-	writel((desc_dma + off) >> 32, cp->regs + REG_TX_COMPWB_DB_HI);
-	writel((desc_dma + off) & 0xffffffff, cp->regs + REG_TX_COMPWB_DB_LOW);
-#endif
-
-	/* enable completion writebacks, enable paced mode,
-	 * disable read pipe, and disable pre-interrupt compwbs
-	 */
-	val =   TX_CFG_COMPWB_Q1 | TX_CFG_COMPWB_Q2 |
-		TX_CFG_COMPWB_Q3 | TX_CFG_COMPWB_Q4 |
-		TX_CFG_DMA_RDPIPE_DIS | TX_CFG_PACED_MODE |
-		TX_CFG_INTR_COMPWB_DIS;
-
-	/* write out tx ring info and tx desc bases */
-	for (i = 0; i < MAX_TX_RINGS; i++) {
-		off = (unsigned long) cp->init_txds[i] -
-			(unsigned long) cp->init_block;
-
-		val |= CAS_TX_RINGN_BASE(i);
-		writel((desc_dma + off) >> 32, cp->regs + REG_TX_DBN_HI(i));
-		writel((desc_dma + off) & 0xffffffff, cp->regs +
-		       REG_TX_DBN_LOW(i));
-		/* don't zero out the kick register here as the system
-		 * will wedge
-		 */
-	}
-	writel(val, cp->regs + REG_TX_CFG);
-
-	/* program max burst sizes. these numbers should be different
-	 * if doing QoS.
-	 */
-#ifdef USE_QOS
-	writel(0x800, cp->regs + REG_TX_MAXBURST_0);
-	writel(0x1600, cp->regs + REG_TX_MAXBURST_1);
-	writel(0x2400, cp->regs + REG_TX_MAXBURST_2);
-	writel(0x4800, cp->regs + REG_TX_MAXBURST_3);
-#else
-	writel(0x800, cp->regs + REG_TX_MAXBURST_0);
-	writel(0x800, cp->regs + REG_TX_MAXBURST_1);
-	writel(0x800, cp->regs + REG_TX_MAXBURST_2);
-	writel(0x800, cp->regs + REG_TX_MAXBURST_3);
-#endif
-}
-
-/* Must be invoked under cp->lock. */
-static inline void cas_init_dma(struct cas *cp)
-{
-	cas_init_tx_dma(cp);
-	cas_init_rx_dma(cp);
-}
-
-static void cas_process_mc_list(struct cas *cp)
-{
-	u16 hash_table[16];
-	u32 crc;
-	struct netdev_hw_addr *ha;
-	int i = 1;
-
-	memset(hash_table, 0, sizeof(hash_table));
-	netdev_for_each_mc_addr(ha, cp->dev) {
-		if (i <= CAS_MC_EXACT_MATCH_SIZE) {
-			/* use the alternate mac address registers for the
-			 * first 15 multicast addresses
-			 */
-			writel((ha->addr[4] << 8) | ha->addr[5],
-			       cp->regs + REG_MAC_ADDRN(i*3 + 0));
-			writel((ha->addr[2] << 8) | ha->addr[3],
-			       cp->regs + REG_MAC_ADDRN(i*3 + 1));
-			writel((ha->addr[0] << 8) | ha->addr[1],
-			       cp->regs + REG_MAC_ADDRN(i*3 + 2));
-			i++;
-		}
-		else {
-			/* use hw hash table for the next series of
-			 * multicast addresses
-			 */
-			crc = ether_crc_le(ETH_ALEN, ha->addr);
-			crc >>= 24;
-			hash_table[crc >> 4] |= 1 << (15 - (crc & 0xf));
-		}
-	}
-	for (i = 0; i < 16; i++)
-		writel(hash_table[i], cp->regs + REG_MAC_HASH_TABLEN(i));
-}
-
-/* Must be invoked under cp->lock. */
-static u32 cas_setup_multicast(struct cas *cp)
-{
-	u32 rxcfg = 0;
-	int i;
-
-	if (cp->dev->flags & IFF_PROMISC) {
-		rxcfg |= MAC_RX_CFG_PROMISC_EN;
-
-	} else if (cp->dev->flags & IFF_ALLMULTI) {
-	    	for (i=0; i < 16; i++)
-			writel(0xFFFF, cp->regs + REG_MAC_HASH_TABLEN(i));
-		rxcfg |= MAC_RX_CFG_HASH_FILTER_EN;
-
-	} else {
-		cas_process_mc_list(cp);
-		rxcfg |= MAC_RX_CFG_HASH_FILTER_EN;
-	}
-
-	return rxcfg;
-}
-
-/* must be invoked under cp->stat_lock[N_TX_RINGS] */
-static void cas_clear_mac_err(struct cas *cp)
-{
-	writel(0, cp->regs + REG_MAC_COLL_NORMAL);
-	writel(0, cp->regs + REG_MAC_COLL_FIRST);
-	writel(0, cp->regs + REG_MAC_COLL_EXCESS);
-	writel(0, cp->regs + REG_MAC_COLL_LATE);
-	writel(0, cp->regs + REG_MAC_TIMER_DEFER);
-	writel(0, cp->regs + REG_MAC_ATTEMPTS_PEAK);
-	writel(0, cp->regs + REG_MAC_RECV_FRAME);
-	writel(0, cp->regs + REG_MAC_LEN_ERR);
-	writel(0, cp->regs + REG_MAC_ALIGN_ERR);
-	writel(0, cp->regs + REG_MAC_FCS_ERR);
-	writel(0, cp->regs + REG_MAC_RX_CODE_ERR);
-}
-
-
-static void cas_mac_reset(struct cas *cp)
-{
-	int i;
-
-	/* do both TX and RX reset */
-	writel(0x1, cp->regs + REG_MAC_TX_RESET);
-	writel(0x1, cp->regs + REG_MAC_RX_RESET);
-
-	/* wait for TX */
-	i = STOP_TRIES;
-	while (i-- > 0) {
-		if (readl(cp->regs + REG_MAC_TX_RESET) == 0)
-			break;
-		udelay(10);
-	}
-
-	/* wait for RX */
-	i = STOP_TRIES;
-	while (i-- > 0) {
-		if (readl(cp->regs + REG_MAC_RX_RESET) == 0)
-			break;
-		udelay(10);
-	}
-
-	if (readl(cp->regs + REG_MAC_TX_RESET) |
-	    readl(cp->regs + REG_MAC_RX_RESET))
-		netdev_err(cp->dev, "mac tx[%d]/rx[%d] reset failed [%08x]\n",
-			   readl(cp->regs + REG_MAC_TX_RESET),
-			   readl(cp->regs + REG_MAC_RX_RESET),
-			   readl(cp->regs + REG_MAC_STATE_MACHINE));
-}
-
-
-/* Must be invoked under cp->lock. */
-static void cas_init_mac(struct cas *cp)
-{
-	unsigned char *e = &cp->dev->dev_addr[0];
-	int i;
-	cas_mac_reset(cp);
-
-	/* setup core arbitration weight register */
-	writel(CAWR_RR_DIS, cp->regs + REG_CAWR);
-
-	/* XXX Use pci_dma_burst_advice() */
-#if !defined(CONFIG_SPARC64) && !defined(CONFIG_ALPHA)
-	/* set the infinite burst register for chips that don't have
-	 * pci issues.
-	 */
-	if ((cp->cas_flags & CAS_FLAG_TARGET_ABORT) == 0)
-		writel(INF_BURST_EN, cp->regs + REG_INF_BURST);
-#endif
-
-	writel(0x1BF0, cp->regs + REG_MAC_SEND_PAUSE);
-
-	writel(0x00, cp->regs + REG_MAC_IPG0);
-	writel(0x08, cp->regs + REG_MAC_IPG1);
-	writel(0x04, cp->regs + REG_MAC_IPG2);
-
-	/* change later for 802.3z */
-	writel(0x40, cp->regs + REG_MAC_SLOT_TIME);
-
-	/* min frame + FCS */
-	writel(ETH_ZLEN + 4, cp->regs + REG_MAC_FRAMESIZE_MIN);
-
-	/* Ethernet payload + header + FCS + optional VLAN tag. NOTE: we
-	 * specify the maximum frame size to prevent RX tag errors on
-	 * oversized frames.
-	 */
-	writel(CAS_BASE(MAC_FRAMESIZE_MAX_BURST, 0x2000) |
-	       CAS_BASE(MAC_FRAMESIZE_MAX_FRAME,
-			(CAS_MAX_MTU + ETH_HLEN + 4 + 4)),
-	       cp->regs + REG_MAC_FRAMESIZE_MAX);
-
-	/* NOTE: crc_size is used as a surrogate for half-duplex.
-	 * workaround saturn half-duplex issue by increasing preamble
-	 * size to 65 bytes.
-	 */
-	if ((cp->cas_flags & CAS_FLAG_SATURN) && cp->crc_size)
-		writel(0x41, cp->regs + REG_MAC_PA_SIZE);
-	else
-		writel(0x07, cp->regs + REG_MAC_PA_SIZE);
-	writel(0x04, cp->regs + REG_MAC_JAM_SIZE);
-	writel(0x10, cp->regs + REG_MAC_ATTEMPT_LIMIT);
-	writel(0x8808, cp->regs + REG_MAC_CTRL_TYPE);
-
-	writel((e[5] | (e[4] << 8)) & 0x3ff, cp->regs + REG_MAC_RANDOM_SEED);
-
-	writel(0, cp->regs + REG_MAC_ADDR_FILTER0);
-	writel(0, cp->regs + REG_MAC_ADDR_FILTER1);
-	writel(0, cp->regs + REG_MAC_ADDR_FILTER2);
-	writel(0, cp->regs + REG_MAC_ADDR_FILTER2_1_MASK);
-	writel(0, cp->regs + REG_MAC_ADDR_FILTER0_MASK);
-
-	/* setup mac address in perfect filter array */
-	for (i = 0; i < 45; i++)
-		writel(0x0, cp->regs + REG_MAC_ADDRN(i));
-
-	writel((e[4] << 8) | e[5], cp->regs + REG_MAC_ADDRN(0));
-	writel((e[2] << 8) | e[3], cp->regs + REG_MAC_ADDRN(1));
-	writel((e[0] << 8) | e[1], cp->regs + REG_MAC_ADDRN(2));
-
-	writel(0x0001, cp->regs + REG_MAC_ADDRN(42));
-	writel(0xc200, cp->regs + REG_MAC_ADDRN(43));
-	writel(0x0180, cp->regs + REG_MAC_ADDRN(44));
-
-	cp->mac_rx_cfg = cas_setup_multicast(cp);
-
-	spin_lock(&cp->stat_lock[N_TX_RINGS]);
-	cas_clear_mac_err(cp);
-	spin_unlock(&cp->stat_lock[N_TX_RINGS]);
-
-	/* Setup MAC interrupts.  We want to get all of the interesting
-	 * counter expiration events, but we do not want to hear about
-	 * normal rx/tx as the DMA engine tells us that.
-	 */
-	writel(MAC_TX_FRAME_XMIT, cp->regs + REG_MAC_TX_MASK);
-	writel(MAC_RX_FRAME_RECV, cp->regs + REG_MAC_RX_MASK);
-
-	/* Don't enable even the PAUSE interrupts for now, we
-	 * make no use of those events other than to record them.
-	 */
-	writel(0xffffffff, cp->regs + REG_MAC_CTRL_MASK);
-}
-
-/* Must be invoked under cp->lock. */
-static void cas_init_pause_thresholds(struct cas *cp)
-{
-	/* Calculate pause thresholds.  Setting the OFF threshold to the
-	 * full RX fifo size effectively disables PAUSE generation
-	 */
-	if (cp->rx_fifo_size <= (2 * 1024)) {
-		cp->rx_pause_off = cp->rx_pause_on = cp->rx_fifo_size;
-	} else {
-		int max_frame = (cp->dev->mtu + ETH_HLEN + 4 + 4 + 64) & ~63;
-		if (max_frame * 3 > cp->rx_fifo_size) {
-			cp->rx_pause_off = 7104;
-			cp->rx_pause_on  = 960;
-		} else {
-			int off = (cp->rx_fifo_size - (max_frame * 2));
-			int on = off - max_frame;
-			cp->rx_pause_off = off;
-			cp->rx_pause_on = on;
-		}
-	}
-}
-
-static int cas_vpd_match(const void __iomem *p, const char *str)
-{
-	int len = strlen(str) + 1;
-	int i;
-
-	for (i = 0; i < len; i++) {
-		if (readb(p + i) != str[i])
-			return 0;
-	}
-	return 1;
-}
-
-
-/* get the mac address by reading the vpd information in the rom.
- * also get the phy type and determine if there's an entropy generator.
- * NOTE: this is a bit convoluted for the following reasons:
- *  1) vpd info has order-dependent mac addresses for multinic cards
- *  2) the only way to determine the nic order is to use the slot
- *     number.
- *  3) fiber cards don't have bridges, so their slot numbers don't
- *     mean anything.
- *  4) we don't actually know we have a fiber card until after
- *     the mac addresses are parsed.
- */
-static int cas_get_vpd_info(struct cas *cp, unsigned char *dev_addr,
-			    const int offset)
-{
-	void __iomem *p = cp->regs + REG_EXPANSION_ROM_RUN_START;
-	void __iomem *base, *kstart;
-	int i, len;
-	int found = 0;
-#define VPD_FOUND_MAC        0x01
-#define VPD_FOUND_PHY        0x02
-
-	int phy_type = CAS_PHY_MII_MDIO0; /* default phy type */
-	int mac_off  = 0;
-
-#if defined(CONFIG_SPARC)
-	const unsigned char *addr;
-#endif
-
-	/* give us access to the PROM */
-	writel(BIM_LOCAL_DEV_PROM | BIM_LOCAL_DEV_PAD,
-	       cp->regs + REG_BIM_LOCAL_DEV_EN);
-
-	/* check for an expansion rom */
-	if (readb(p) != 0x55 || readb(p + 1) != 0xaa)
-		goto use_random_mac_addr;
-
-	/* search for beginning of vpd */
-	base = NULL;
-	for (i = 2; i < EXPANSION_ROM_SIZE; i++) {
-		/* check for PCIR */
-		if ((readb(p + i + 0) == 0x50) &&
-		    (readb(p + i + 1) == 0x43) &&
-		    (readb(p + i + 2) == 0x49) &&
-		    (readb(p + i + 3) == 0x52)) {
-			base = p + (readb(p + i + 8) |
-				    (readb(p + i + 9) << 8));
-			break;
-		}
-	}
-
-	if (!base || (readb(base) != 0x82))
-		goto use_random_mac_addr;
-
-	i = (readb(base + 1) | (readb(base + 2) << 8)) + 3;
-	while (i < EXPANSION_ROM_SIZE) {
-		if (readb(base + i) != 0x90) /* no vpd found */
-			goto use_random_mac_addr;
-
-		/* found a vpd field */
-		len = readb(base + i + 1) | (readb(base + i + 2) << 8);
-
-		/* extract keywords */
-		kstart = base + i + 3;
-		p = kstart;
-		while ((p - kstart) < len) {
-			int klen = readb(p + 2);
-			int j;
-			char type;
-
-			p += 3;
-
-			/* look for the following things:
-			 * -- correct length == 29
-			 * 3 (type) + 2 (size) +
-			 * 18 (strlen("local-mac-address") + 1) +
-			 * 6 (mac addr)
-			 * -- VPD Instance 'I'
-			 * -- VPD Type Bytes 'B'
-			 * -- VPD data length == 6
-			 * -- property string == local-mac-address
-			 *
-			 * -- correct length == 24
-			 * 3 (type) + 2 (size) +
-			 * 12 (strlen("entropy-dev") + 1) +
-			 * 7 (strlen("vms110") + 1)
-			 * -- VPD Instance 'I'
-			 * -- VPD Type String 'B'
-			 * -- VPD data length == 7
-			 * -- property string == entropy-dev
-			 *
-			 * -- correct length == 18
-			 * 3 (type) + 2 (size) +
-			 * 9 (strlen("phy-type") + 1) +
-			 * 4 (strlen("pcs") + 1)
-			 * -- VPD Instance 'I'
-			 * -- VPD Type String 'S'
-			 * -- VPD data length == 4
-			 * -- property string == phy-type
-			 *
-			 * -- correct length == 23
-			 * 3 (type) + 2 (size) +
-			 * 14 (strlen("phy-interface") + 1) +
-			 * 4 (strlen("pcs") + 1)
-			 * -- VPD Instance 'I'
-			 * -- VPD Type String 'S'
-			 * -- VPD data length == 4
-			 * -- property string == phy-interface
-			 */
-			if (readb(p) != 'I')
-				goto next;
-
-			/* finally, check string and length */
-			type = readb(p + 3);
-			if (type == 'B') {
-				if ((klen == 29) && readb(p + 4) == 6 &&
-				    cas_vpd_match(p + 5,
-						  "local-mac-address")) {
-					if (mac_off++ > offset)
-						goto next;
-
-					/* set mac address */
-					for (j = 0; j < 6; j++)
-						dev_addr[j] =
-							readb(p + 23 + j);
-					goto found_mac;
-				}
-			}
-
-			if (type != 'S')
-				goto next;
-
-#ifdef USE_ENTROPY_DEV
-			if ((klen == 24) &&
-			    cas_vpd_match(p + 5, "entropy-dev") &&
-			    cas_vpd_match(p + 17, "vms110")) {
-				cp->cas_flags |= CAS_FLAG_ENTROPY_DEV;
-				goto next;
-			}
-#endif
-
-			if (found & VPD_FOUND_PHY)
-				goto next;
-
-			if ((klen == 18) && readb(p + 4) == 4 &&
-			    cas_vpd_match(p + 5, "phy-type")) {
-				if (cas_vpd_match(p + 14, "pcs")) {
-					phy_type = CAS_PHY_SERDES;
-					goto found_phy;
-				}
-			}
-
-			if ((klen == 23) && readb(p + 4) == 4 &&
-			    cas_vpd_match(p + 5, "phy-interface")) {
-				if (cas_vpd_match(p + 19, "pcs")) {
-					phy_type = CAS_PHY_SERDES;
-					goto found_phy;
-				}
-			}
-found_mac:
-			found |= VPD_FOUND_MAC;
-			goto next;
-
-found_phy:
-			found |= VPD_FOUND_PHY;
-
-next:
-			p += klen;
-		}
-		i += len + 3;
-	}
-
-use_random_mac_addr:
-	if (found & VPD_FOUND_MAC)
-		goto done;
-
-#if defined(CONFIG_SPARC)
-	addr = of_get_property(cp->of_node, "local-mac-address", NULL);
-	if (addr != NULL) {
-		memcpy(dev_addr, addr, 6);
-		goto done;
-	}
-#endif
-
-	/* Sun MAC prefix then 3 random bytes. */
-	pr_info("MAC address not found in ROM VPD\n");
-	dev_addr[0] = 0x08;
-	dev_addr[1] = 0x00;
-	dev_addr[2] = 0x20;
-	get_random_bytes(dev_addr + 3, 3);
-
-done:
-	writel(0, cp->regs + REG_BIM_LOCAL_DEV_EN);
-	return phy_type;
-}
-
-/* check pci invariants */
-static void cas_check_pci_invariants(struct cas *cp)
-{
-	struct pci_dev *pdev = cp->pdev;
-
-	cp->cas_flags = 0;
-	if ((pdev->vendor == PCI_VENDOR_ID_SUN) &&
-	    (pdev->device == PCI_DEVICE_ID_SUN_CASSINI)) {
-		if (pdev->revision >= CAS_ID_REVPLUS)
-			cp->cas_flags |= CAS_FLAG_REG_PLUS;
-		if (pdev->revision < CAS_ID_REVPLUS02u)
-			cp->cas_flags |= CAS_FLAG_TARGET_ABORT;
-
-		/* Original Cassini supports HW CSUM, but it's not
-		 * enabled by default as it can trigger TX hangs.
-		 */
-		if (pdev->revision < CAS_ID_REV2)
-			cp->cas_flags |= CAS_FLAG_NO_HW_CSUM;
-	} else {
-		/* Only sun has original cassini chips.  */
-		cp->cas_flags |= CAS_FLAG_REG_PLUS;
-
-		/* We use a flag because the same phy might be externally
-		 * connected.
-		 */
-		if ((pdev->vendor == PCI_VENDOR_ID_NS) &&
-		    (pdev->device == PCI_DEVICE_ID_NS_SATURN))
-			cp->cas_flags |= CAS_FLAG_SATURN;
-	}
-}
-
-
-static int cas_check_invariants(struct cas *cp)
-{
-	struct pci_dev *pdev = cp->pdev;
-	u32 cfg;
-	int i;
-
-	/* get page size for rx buffers. */
-	cp->page_order = 0;
-#ifdef USE_PAGE_ORDER
-	if (PAGE_SHIFT < CAS_JUMBO_PAGE_SHIFT) {
-		/* see if we can allocate larger pages */
-		struct page *page = alloc_pages(GFP_ATOMIC,
-						CAS_JUMBO_PAGE_SHIFT -
-						PAGE_SHIFT);
-		if (page) {
-			__free_pages(page, CAS_JUMBO_PAGE_SHIFT - PAGE_SHIFT);
-			cp->page_order = CAS_JUMBO_PAGE_SHIFT - PAGE_SHIFT;
-		} else {
-			printk("MTU limited to %d bytes\n", CAS_MAX_MTU);
-		}
-	}
-#endif
-	cp->page_size = (PAGE_SIZE << cp->page_order);
-
-	/* Fetch the FIFO configurations. */
-	cp->tx_fifo_size = readl(cp->regs + REG_TX_FIFO_SIZE) * 64;
-	cp->rx_fifo_size = RX_FIFO_SIZE;
-
-	/* finish phy determination. MDIO1 takes precedence over MDIO0 if
-	 * they're both connected.
-	 */
-	cp->phy_type = cas_get_vpd_info(cp, cp->dev->dev_addr,
-					PCI_SLOT(pdev->devfn));
-	if (cp->phy_type & CAS_PHY_SERDES) {
-		cp->cas_flags |= CAS_FLAG_1000MB_CAP;
-		return 0; /* no more checking needed */
-	}
-
-	/* MII */
-	cfg = readl(cp->regs + REG_MIF_CFG);
-	if (cfg & MIF_CFG_MDIO_1) {
-		cp->phy_type = CAS_PHY_MII_MDIO1;
-	} else if (cfg & MIF_CFG_MDIO_0) {
-		cp->phy_type = CAS_PHY_MII_MDIO0;
-	}
-
-	cas_mif_poll(cp, 0);
-	writel(PCS_DATAPATH_MODE_MII, cp->regs + REG_PCS_DATAPATH_MODE);
-
-	for (i = 0; i < 32; i++) {
-		u32 phy_id;
-		int j;
-
-		for (j = 0; j < 3; j++) {
-			cp->phy_addr = i;
-			phy_id = cas_phy_read(cp, MII_PHYSID1) << 16;
-			phy_id |= cas_phy_read(cp, MII_PHYSID2);
-			if (phy_id && (phy_id != 0xFFFFFFFF)) {
-				cp->phy_id = phy_id;
-				goto done;
-			}
-		}
-	}
-	pr_err("MII phy did not respond [%08x]\n",
-	       readl(cp->regs + REG_MIF_STATE_MACHINE));
-	return -1;
-
-done:
-	/* see if we can do gigabit */
-	cfg = cas_phy_read(cp, MII_BMSR);
-	if ((cfg & CAS_BMSR_1000_EXTEND) &&
-	    cas_phy_read(cp, CAS_MII_1000_EXTEND))
-		cp->cas_flags |= CAS_FLAG_1000MB_CAP;
-	return 0;
-}
-
-/* Must be invoked under cp->lock. */
-static inline void cas_start_dma(struct cas *cp)
-{
-	int i;
-	u32 val;
-	int txfailed = 0;
-
-	/* enable dma */
-	val = readl(cp->regs + REG_TX_CFG) | TX_CFG_DMA_EN;
-	writel(val, cp->regs + REG_TX_CFG);
-	val = readl(cp->regs + REG_RX_CFG) | RX_CFG_DMA_EN;
-	writel(val, cp->regs + REG_RX_CFG);
-
-	/* enable the mac */
-	val = readl(cp->regs + REG_MAC_TX_CFG) | MAC_TX_CFG_EN;
-	writel(val, cp->regs + REG_MAC_TX_CFG);
-	val = readl(cp->regs + REG_MAC_RX_CFG) | MAC_RX_CFG_EN;
-	writel(val, cp->regs + REG_MAC_RX_CFG);
-
-	i = STOP_TRIES;
-	while (i-- > 0) {
-		val = readl(cp->regs + REG_MAC_TX_CFG);
-		if ((val & MAC_TX_CFG_EN))
-			break;
-		udelay(10);
-	}
-	if (i < 0) txfailed = 1;
-	i = STOP_TRIES;
-	while (i-- > 0) {
-		val = readl(cp->regs + REG_MAC_RX_CFG);
-		if ((val & MAC_RX_CFG_EN)) {
-			if (txfailed) {
-				netdev_err(cp->dev,
-					   "enabling mac failed [tx:%08x:%08x]\n",
-					   readl(cp->regs + REG_MIF_STATE_MACHINE),
-					   readl(cp->regs + REG_MAC_STATE_MACHINE));
-			}
-			goto enable_rx_done;
-		}
-		udelay(10);
-	}
-	netdev_err(cp->dev, "enabling mac failed [%s:%08x:%08x]\n",
-		   (txfailed ? "tx,rx" : "rx"),
-		   readl(cp->regs + REG_MIF_STATE_MACHINE),
-		   readl(cp->regs + REG_MAC_STATE_MACHINE));
-
-enable_rx_done:
-	cas_unmask_intr(cp); /* enable interrupts */
-	writel(RX_DESC_RINGN_SIZE(0) - 4, cp->regs + REG_RX_KICK);
-	writel(0, cp->regs + REG_RX_COMP_TAIL);
-
-	if (cp->cas_flags & CAS_FLAG_REG_PLUS) {
-		if (N_RX_DESC_RINGS > 1)
-			writel(RX_DESC_RINGN_SIZE(1) - 4,
-			       cp->regs + REG_PLUS_RX_KICK1);
-
-		for (i = 1; i < N_RX_COMP_RINGS; i++)
-			writel(0, cp->regs + REG_PLUS_RX_COMPN_TAIL(i));
-	}
-}
-
-/* Must be invoked under cp->lock. */
-static void cas_read_pcs_link_mode(struct cas *cp, int *fd, int *spd,
-				   int *pause)
-{
-	u32 val = readl(cp->regs + REG_PCS_MII_LPA);
-	*fd     = (val & PCS_MII_LPA_FD) ? 1 : 0;
-	*pause  = (val & PCS_MII_LPA_SYM_PAUSE) ? 0x01 : 0x00;
-	if (val & PCS_MII_LPA_ASYM_PAUSE)
-		*pause |= 0x10;
-	*spd = 1000;
-}
-
-/* Must be invoked under cp->lock. */
-static void cas_read_mii_link_mode(struct cas *cp, int *fd, int *spd,
-				   int *pause)
-{
-	u32 val;
-
-	*fd = 0;
-	*spd = 10;
-	*pause = 0;
-
-	/* use GMII registers */
-	val = cas_phy_read(cp, MII_LPA);
-	if (val & CAS_LPA_PAUSE)
-		*pause = 0x01;
-
-	if (val & CAS_LPA_ASYM_PAUSE)
-		*pause |= 0x10;
-
-	if (val & LPA_DUPLEX)
-		*fd = 1;
-	if (val & LPA_100)
-		*spd = 100;
-
-	if (cp->cas_flags & CAS_FLAG_1000MB_CAP) {
-		val = cas_phy_read(cp, CAS_MII_1000_STATUS);
-		if (val & (CAS_LPA_1000FULL | CAS_LPA_1000HALF))
-			*spd = 1000;
-		if (val & CAS_LPA_1000FULL)
-			*fd = 1;
-	}
-}
-
-/* A link-up condition has occurred, initialize and enable the
- * rest of the chip.
- *
- * Must be invoked under cp->lock.
- */
-static void cas_set_link_modes(struct cas *cp)
-{
-	u32 val;
-	int full_duplex, speed, pause;
-
-	full_duplex = 0;
-	speed = 10;
-	pause = 0;
-
-	if (CAS_PHY_MII(cp->phy_type)) {
-		cas_mif_poll(cp, 0);
-		val = cas_phy_read(cp, MII_BMCR);
-		if (val & BMCR_ANENABLE) {
-			cas_read_mii_link_mode(cp, &full_duplex, &speed,
-					       &pause);
-		} else {
-			if (val & BMCR_FULLDPLX)
-				full_duplex = 1;
-
-			if (val & BMCR_SPEED100)
-				speed = 100;
-			else if (val & CAS_BMCR_SPEED1000)
-				speed = (cp->cas_flags & CAS_FLAG_1000MB_CAP) ?
-					1000 : 100;
-		}
-		cas_mif_poll(cp, 1);
-
-	} else {
-		val = readl(cp->regs + REG_PCS_MII_CTRL);
-		cas_read_pcs_link_mode(cp, &full_duplex, &speed, &pause);
-		if ((val & PCS_MII_AUTONEG_EN) == 0) {
-			if (val & PCS_MII_CTRL_DUPLEX)
-				full_duplex = 1;
-		}
-	}
-
-	netif_info(cp, link, cp->dev, "Link up at %d Mbps, %s-duplex\n",
-		   speed, full_duplex ? "full" : "half");
-
-	val = MAC_XIF_TX_MII_OUTPUT_EN | MAC_XIF_LINK_LED;
-	if (CAS_PHY_MII(cp->phy_type)) {
-		val |= MAC_XIF_MII_BUFFER_OUTPUT_EN;
-		if (!full_duplex)
-			val |= MAC_XIF_DISABLE_ECHO;
-	}
-	if (full_duplex)
-		val |= MAC_XIF_FDPLX_LED;
-	if (speed == 1000)
-		val |= MAC_XIF_GMII_MODE;
-	writel(val, cp->regs + REG_MAC_XIF_CFG);
-
-	/* deal with carrier and collision detect. */
-	val = MAC_TX_CFG_IPG_EN;
-	if (full_duplex) {
-		val |= MAC_TX_CFG_IGNORE_CARRIER;
-		val |= MAC_TX_CFG_IGNORE_COLL;
-	} else {
-#ifndef USE_CSMA_CD_PROTO
-		val |= MAC_TX_CFG_NEVER_GIVE_UP_EN;
-		val |= MAC_TX_CFG_NEVER_GIVE_UP_LIM;
-#endif
-	}
-	/* val now set up for REG_MAC_TX_CFG */
-
-	/* If gigabit and half-duplex, enable carrier extension
-	 * mode.  increase slot time to 512 bytes as well.
-	 * else, disable it and make sure slot time is 64 bytes.
-	 * also activate checksum bug workaround
-	 */
-	if ((speed == 1000) && !full_duplex) {
-		writel(val | MAC_TX_CFG_CARRIER_EXTEND,
-		       cp->regs + REG_MAC_TX_CFG);
-
-		val = readl(cp->regs + REG_MAC_RX_CFG);
-		val &= ~MAC_RX_CFG_STRIP_FCS; /* checksum workaround */
-		writel(val | MAC_RX_CFG_CARRIER_EXTEND,
-		       cp->regs + REG_MAC_RX_CFG);
-
-		writel(0x200, cp->regs + REG_MAC_SLOT_TIME);
-
-		cp->crc_size = 4;
-		/* minimum size gigabit frame at half duplex */
-		cp->min_frame_size = CAS_1000MB_MIN_FRAME;
-
-	} else {
-		writel(val, cp->regs + REG_MAC_TX_CFG);
-
-		/* checksum bug workaround. don't strip FCS when in
-		 * half-duplex mode
-		 */
-		val = readl(cp->regs + REG_MAC_RX_CFG);
-		if (full_duplex) {
-			val |= MAC_RX_CFG_STRIP_FCS;
-			cp->crc_size = 0;
-			cp->min_frame_size = CAS_MIN_MTU;
-		} else {
-			val &= ~MAC_RX_CFG_STRIP_FCS;
-			cp->crc_size = 4;
-			cp->min_frame_size = CAS_MIN_FRAME;
-		}
-		writel(val & ~MAC_RX_CFG_CARRIER_EXTEND,
-		       cp->regs + REG_MAC_RX_CFG);
-		writel(0x40, cp->regs + REG_MAC_SLOT_TIME);
-	}
-
-	if (netif_msg_link(cp)) {
-		if (pause & 0x01) {
-			netdev_info(cp->dev, "Pause is enabled (rxfifo: %d off: %d on: %d)\n",
-				    cp->rx_fifo_size,
-				    cp->rx_pause_off,
-				    cp->rx_pause_on);
-		} else if (pause & 0x10) {
-			netdev_info(cp->dev, "TX pause enabled\n");
-		} else {
-			netdev_info(cp->dev, "Pause is disabled\n");
-		}
-	}
-
-	val = readl(cp->regs + REG_MAC_CTRL_CFG);
-	val &= ~(MAC_CTRL_CFG_SEND_PAUSE_EN | MAC_CTRL_CFG_RECV_PAUSE_EN);
-	if (pause) { /* symmetric or asymmetric pause */
-		val |= MAC_CTRL_CFG_SEND_PAUSE_EN;
-		if (pause & 0x01) { /* symmetric pause */
-			val |= MAC_CTRL_CFG_RECV_PAUSE_EN;
-		}
-	}
-	writel(val, cp->regs + REG_MAC_CTRL_CFG);
-	cas_start_dma(cp);
-}
-
-/* Must be invoked under cp->lock. */
-static void cas_init_hw(struct cas *cp, int restart_link)
-{
-	if (restart_link)
-		cas_phy_init(cp);
-
-	cas_init_pause_thresholds(cp);
-	cas_init_mac(cp);
-	cas_init_dma(cp);
-
-	if (restart_link) {
-		/* Default aneg parameters */
-		cp->timer_ticks = 0;
-		cas_begin_auto_negotiation(cp, NULL);
-	} else if (cp->lstate == link_up) {
-		cas_set_link_modes(cp);
-		netif_carrier_on(cp->dev);
-	}
-}
-
-/* Must be invoked under cp->lock. on earlier cassini boards,
- * SOFT_0 is tied to PCI reset. we use this to force a pci reset,
- * let it settle out, and then restore pci state.
- */
-static void cas_hard_reset(struct cas *cp)
-{
-	writel(BIM_LOCAL_DEV_SOFT_0, cp->regs + REG_BIM_LOCAL_DEV_EN);
-	udelay(20);
-	pci_restore_state(cp->pdev);
-}
-
-
-static void cas_global_reset(struct cas *cp, int blkflag)
-{
-	int limit;
-
-	/* issue a global reset. don't use RSTOUT. */
-	if (blkflag && !CAS_PHY_MII(cp->phy_type)) {
-		/* For PCS, when the blkflag is set, we should set the
-		 * SW_REST_BLOCK_PCS_SLINK bit to prevent the results of
-		 * the last autonegotiation from being cleared.  We'll
-		 * need some special handling if the chip is set into a
-		 * loopback mode.
-		 */
-		writel((SW_RESET_TX | SW_RESET_RX | SW_RESET_BLOCK_PCS_SLINK),
-		       cp->regs + REG_SW_RESET);
-	} else {
-		writel(SW_RESET_TX | SW_RESET_RX, cp->regs + REG_SW_RESET);
-	}
-
-	/* need to wait at least 3ms before polling register */
-	mdelay(3);
-
-	limit = STOP_TRIES;
-	while (limit-- > 0) {
-		u32 val = readl(cp->regs + REG_SW_RESET);
-		if ((val & (SW_RESET_TX | SW_RESET_RX)) == 0)
-			goto done;
-		udelay(10);
-	}
-	netdev_err(cp->dev, "sw reset failed\n");
-
-done:
-	/* enable various BIM interrupts */
-	writel(BIM_CFG_DPAR_INTR_ENABLE | BIM_CFG_RMA_INTR_ENABLE |
-	       BIM_CFG_RTA_INTR_ENABLE, cp->regs + REG_BIM_CFG);
-
-	/* clear out pci error status mask for handled errors.
-	 * we don't deal with DMA counter overflows as they happen
-	 * all the time.
-	 */
-	writel(0xFFFFFFFFU & ~(PCI_ERR_BADACK | PCI_ERR_DTRTO |
-			       PCI_ERR_OTHER | PCI_ERR_BIM_DMA_WRITE |
-			       PCI_ERR_BIM_DMA_READ), cp->regs +
-	       REG_PCI_ERR_STATUS_MASK);
-
-	/* set up for MII by default to address mac rx reset timeout
-	 * issue
-	 */
-	writel(PCS_DATAPATH_MODE_MII, cp->regs + REG_PCS_DATAPATH_MODE);
-}
-
-static void cas_reset(struct cas *cp, int blkflag)
-{
-	u32 val;
-
-	cas_mask_intr(cp);
-	cas_global_reset(cp, blkflag);
-	cas_mac_reset(cp);
-	cas_entropy_reset(cp);
-
-	/* disable dma engines. */
-	val = readl(cp->regs + REG_TX_CFG);
-	val &= ~TX_CFG_DMA_EN;
-	writel(val, cp->regs + REG_TX_CFG);
-
-	val = readl(cp->regs + REG_RX_CFG);
-	val &= ~RX_CFG_DMA_EN;
-	writel(val, cp->regs + REG_RX_CFG);
-
-	/* program header parser */
-	if ((cp->cas_flags & CAS_FLAG_TARGET_ABORT) ||
-	    (CAS_HP_ALT_FIRMWARE == cas_prog_null)) {
-		cas_load_firmware(cp, CAS_HP_FIRMWARE);
-	} else {
-		cas_load_firmware(cp, CAS_HP_ALT_FIRMWARE);
-	}
-
-	/* clear out error registers */
-	spin_lock(&cp->stat_lock[N_TX_RINGS]);
-	cas_clear_mac_err(cp);
-	spin_unlock(&cp->stat_lock[N_TX_RINGS]);
-}
-
-/* Shut down the chip, must be called with pm_mutex held.  */
-static void cas_shutdown(struct cas *cp)
-{
-	unsigned long flags;
-
-	/* Make us not-running to avoid timers respawning */
-	cp->hw_running = 0;
-
-	del_timer_sync(&cp->link_timer);
-
-	/* Stop the reset task */
-#if 0
-	while (atomic_read(&cp->reset_task_pending_mtu) ||
-	       atomic_read(&cp->reset_task_pending_spare) ||
-	       atomic_read(&cp->reset_task_pending_all))
-		schedule();
-
-#else
-	while (atomic_read(&cp->reset_task_pending))
-		schedule();
-#endif
-	/* Actually stop the chip */
-	cas_lock_all_save(cp, flags);
-	cas_reset(cp, 0);
-	if (cp->cas_flags & CAS_FLAG_SATURN)
-		cas_phy_powerdown(cp);
-	cas_unlock_all_restore(cp, flags);
-}
-
-static int cas_change_mtu(struct net_device *dev, int new_mtu)
-{
-	struct cas *cp = netdev_priv(dev);
-
-	if (new_mtu < CAS_MIN_MTU || new_mtu > CAS_MAX_MTU)
-		return -EINVAL;
-
-	dev->mtu = new_mtu;
-	if (!netif_running(dev) || !netif_device_present(dev))
-		return 0;
-
-	/* let the reset task handle it */
-#if 1
-	atomic_inc(&cp->reset_task_pending);
-	if ((cp->phy_type & CAS_PHY_SERDES)) {
-		atomic_inc(&cp->reset_task_pending_all);
-	} else {
-		atomic_inc(&cp->reset_task_pending_mtu);
-	}
-	schedule_work(&cp->reset_task);
-#else
-	atomic_set(&cp->reset_task_pending, (cp->phy_type & CAS_PHY_SERDES) ?
-		   CAS_RESET_ALL : CAS_RESET_MTU);
-	pr_err("reset called in cas_change_mtu\n");
-	schedule_work(&cp->reset_task);
-#endif
-
-	flush_work_sync(&cp->reset_task);
-	return 0;
-}
-
-static void cas_clean_txd(struct cas *cp, int ring)
-{
-	struct cas_tx_desc *txd = cp->init_txds[ring];
-	struct sk_buff *skb, **skbs = cp->tx_skbs[ring];
-	u64 daddr, dlen;
-	int i, size;
-
-	size = TX_DESC_RINGN_SIZE(ring);
-	for (i = 0; i < size; i++) {
-		int frag;
-
-		if (skbs[i] == NULL)
-			continue;
-
-		skb = skbs[i];
-		skbs[i] = NULL;
-
-		for (frag = 0; frag <= skb_shinfo(skb)->nr_frags;  frag++) {
-			int ent = i & (size - 1);
-
-			/* first buffer is never a tiny buffer and so
-			 * needs to be unmapped.
-			 */
-			daddr = le64_to_cpu(txd[ent].buffer);
-			dlen  =  CAS_VAL(TX_DESC_BUFLEN,
-					 le64_to_cpu(txd[ent].control));
-			pci_unmap_page(cp->pdev, daddr, dlen,
-				       PCI_DMA_TODEVICE);
-
-			if (frag != skb_shinfo(skb)->nr_frags) {
-				i++;
-
-				/* next buffer might by a tiny buffer.
-				 * skip past it.
-				 */
-				ent = i & (size - 1);
-				if (cp->tx_tiny_use[ring][ent].used)
-					i++;
-			}
-		}
-		dev_kfree_skb_any(skb);
-	}
-
-	/* zero out tiny buf usage */
-	memset(cp->tx_tiny_use[ring], 0, size*sizeof(*cp->tx_tiny_use[ring]));
-}
-
-/* freed on close */
-static inline void cas_free_rx_desc(struct cas *cp, int ring)
-{
-	cas_page_t **page = cp->rx_pages[ring];
-	int i, size;
-
-	size = RX_DESC_RINGN_SIZE(ring);
-	for (i = 0; i < size; i++) {
-		if (page[i]) {
-			cas_page_free(cp, page[i]);
-			page[i] = NULL;
-		}
-	}
-}
-
-static void cas_free_rxds(struct cas *cp)
-{
-	int i;
-
-	for (i = 0; i < N_RX_DESC_RINGS; i++)
-		cas_free_rx_desc(cp, i);
-}
-
-/* Must be invoked under cp->lock. */
-static void cas_clean_rings(struct cas *cp)
-{
-	int i;
-
-	/* need to clean all tx rings */
-	memset(cp->tx_old, 0, sizeof(*cp->tx_old)*N_TX_RINGS);
-	memset(cp->tx_new, 0, sizeof(*cp->tx_new)*N_TX_RINGS);
-	for (i = 0; i < N_TX_RINGS; i++)
-		cas_clean_txd(cp, i);
-
-	/* zero out init block */
-	memset(cp->init_block, 0, sizeof(struct cas_init_block));
-	cas_clean_rxds(cp);
-	cas_clean_rxcs(cp);
-}
-
-/* allocated on open */
-static inline int cas_alloc_rx_desc(struct cas *cp, int ring)
-{
-	cas_page_t **page = cp->rx_pages[ring];
-	int size, i = 0;
-
-	size = RX_DESC_RINGN_SIZE(ring);
-	for (i = 0; i < size; i++) {
-		if ((page[i] = cas_page_alloc(cp, GFP_KERNEL)) == NULL)
-			return -1;
-	}
-	return 0;
-}
-
-static int cas_alloc_rxds(struct cas *cp)
-{
-	int i;
-
-	for (i = 0; i < N_RX_DESC_RINGS; i++) {
-		if (cas_alloc_rx_desc(cp, i) < 0) {
-			cas_free_rxds(cp);
-			return -1;
-		}
-	}
-	return 0;
-}
-
-static void cas_reset_task(struct work_struct *work)
-{
-	struct cas *cp = container_of(work, struct cas, reset_task);
-#if 0
-	int pending = atomic_read(&cp->reset_task_pending);
-#else
-	int pending_all = atomic_read(&cp->reset_task_pending_all);
-	int pending_spare = atomic_read(&cp->reset_task_pending_spare);
-	int pending_mtu = atomic_read(&cp->reset_task_pending_mtu);
-
-	if (pending_all == 0 && pending_spare == 0 && pending_mtu == 0) {
-		/* We can have more tasks scheduled than actually
-		 * needed.
-		 */
-		atomic_dec(&cp->reset_task_pending);
-		return;
-	}
-#endif
-	/* The link went down, we reset the ring, but keep
-	 * DMA stopped. Use this function for reset
-	 * on error as well.
-	 */
-	if (cp->hw_running) {
-		unsigned long flags;
-
-		/* Make sure we don't get interrupts or tx packets */
-		netif_device_detach(cp->dev);
-		cas_lock_all_save(cp, flags);
-
-		if (cp->opened) {
-			/* We call cas_spare_recover when we call cas_open.
-			 * but we do not initialize the lists cas_spare_recover
-			 * uses until cas_open is called.
-			 */
-			cas_spare_recover(cp, GFP_ATOMIC);
-		}
-#if 1
-		/* test => only pending_spare set */
-		if (!pending_all && !pending_mtu)
-			goto done;
-#else
-		if (pending == CAS_RESET_SPARE)
-			goto done;
-#endif
-		/* when pending == CAS_RESET_ALL, the following
-		 * call to cas_init_hw will restart auto negotiation.
-		 * Setting the second argument of cas_reset to
-		 * !(pending == CAS_RESET_ALL) will set this argument
-		 * to 1 (avoiding reinitializing the PHY for the normal
-		 * PCS case) when auto negotiation is not restarted.
-		 */
-#if 1
-		cas_reset(cp, !(pending_all > 0));
-		if (cp->opened)
-			cas_clean_rings(cp);
-		cas_init_hw(cp, (pending_all > 0));
-#else
-		cas_reset(cp, !(pending == CAS_RESET_ALL));
-		if (cp->opened)
-			cas_clean_rings(cp);
-		cas_init_hw(cp, pending == CAS_RESET_ALL);
-#endif
-
-done:
-		cas_unlock_all_restore(cp, flags);
-		netif_device_attach(cp->dev);
-	}
-#if 1
-	atomic_sub(pending_all, &cp->reset_task_pending_all);
-	atomic_sub(pending_spare, &cp->reset_task_pending_spare);
-	atomic_sub(pending_mtu, &cp->reset_task_pending_mtu);
-	atomic_dec(&cp->reset_task_pending);
-#else
-	atomic_set(&cp->reset_task_pending, 0);
-#endif
-}
-
-static void cas_link_timer(unsigned long data)
-{
-	struct cas *cp = (struct cas *) data;
-	int mask, pending = 0, reset = 0;
-	unsigned long flags;
-
-	if (link_transition_timeout != 0 &&
-	    cp->link_transition_jiffies_valid &&
-	    ((jiffies - cp->link_transition_jiffies) >
-	      (link_transition_timeout))) {
-		/* One-second counter so link-down workaround doesn't
-		 * cause resets to occur so fast as to fool the switch
-		 * into thinking the link is down.
-		 */
-		cp->link_transition_jiffies_valid = 0;
-	}
-
-	if (!cp->hw_running)
-		return;
-
-	spin_lock_irqsave(&cp->lock, flags);
-	cas_lock_tx(cp);
-	cas_entropy_gather(cp);
-
-	/* If the link task is still pending, we just
-	 * reschedule the link timer
-	 */
-#if 1
-	if (atomic_read(&cp->reset_task_pending_all) ||
-	    atomic_read(&cp->reset_task_pending_spare) ||
-	    atomic_read(&cp->reset_task_pending_mtu))
-		goto done;
-#else
-	if (atomic_read(&cp->reset_task_pending))
-		goto done;
-#endif
-
-	/* check for rx cleaning */
-	if ((mask = (cp->cas_flags & CAS_FLAG_RXD_POST_MASK))) {
-		int i, rmask;
-
-		for (i = 0; i < MAX_RX_DESC_RINGS; i++) {
-			rmask = CAS_FLAG_RXD_POST(i);
-			if ((mask & rmask) == 0)
-				continue;
-
-			/* post_rxds will do a mod_timer */
-			if (cas_post_rxds_ringN(cp, i, cp->rx_last[i]) < 0) {
-				pending = 1;
-				continue;
-			}
-			cp->cas_flags &= ~rmask;
-		}
-	}
-
-	if (CAS_PHY_MII(cp->phy_type)) {
-		u16 bmsr;
-		cas_mif_poll(cp, 0);
-		bmsr = cas_phy_read(cp, MII_BMSR);
-		/* WTZ: Solaris driver reads this twice, but that
-		 * may be due to the PCS case and the use of a
-		 * common implementation. Read it twice here to be
-		 * safe.
-		 */
-		bmsr = cas_phy_read(cp, MII_BMSR);
-		cas_mif_poll(cp, 1);
-		readl(cp->regs + REG_MIF_STATUS); /* avoid dups */
-		reset = cas_mii_link_check(cp, bmsr);
-	} else {
-		reset = cas_pcs_link_check(cp);
-	}
-
-	if (reset)
-		goto done;
-
-	/* check for tx state machine confusion */
-	if ((readl(cp->regs + REG_MAC_TX_STATUS) & MAC_TX_FRAME_XMIT) == 0) {
-		u32 val = readl(cp->regs + REG_MAC_STATE_MACHINE);
-		u32 wptr, rptr;
-		int tlm  = CAS_VAL(MAC_SM_TLM, val);
-
-		if (((tlm == 0x5) || (tlm == 0x3)) &&
-		    (CAS_VAL(MAC_SM_ENCAP_SM, val) == 0)) {
-			netif_printk(cp, tx_err, KERN_DEBUG, cp->dev,
-				     "tx err: MAC_STATE[%08x]\n", val);
-			reset = 1;
-			goto done;
-		}
-
-		val  = readl(cp->regs + REG_TX_FIFO_PKT_CNT);
-		wptr = readl(cp->regs + REG_TX_FIFO_WRITE_PTR);
-		rptr = readl(cp->regs + REG_TX_FIFO_READ_PTR);
-		if ((val == 0) && (wptr != rptr)) {
-			netif_printk(cp, tx_err, KERN_DEBUG, cp->dev,
-				     "tx err: TX_FIFO[%08x:%08x:%08x]\n",
-				     val, wptr, rptr);
-			reset = 1;
-		}
-
-		if (reset)
-			cas_hard_reset(cp);
-	}
-
-done:
-	if (reset) {
-#if 1
-		atomic_inc(&cp->reset_task_pending);
-		atomic_inc(&cp->reset_task_pending_all);
-		schedule_work(&cp->reset_task);
-#else
-		atomic_set(&cp->reset_task_pending, CAS_RESET_ALL);
-		pr_err("reset called in cas_link_timer\n");
-		schedule_work(&cp->reset_task);
-#endif
-	}
-
-	if (!pending)
-		mod_timer(&cp->link_timer, jiffies + CAS_LINK_TIMEOUT);
-	cas_unlock_tx(cp);
-	spin_unlock_irqrestore(&cp->lock, flags);
-}
-
-/* tiny buffers are used to avoid target abort issues with
- * older cassini's
- */
-static void cas_tx_tiny_free(struct cas *cp)
-{
-	struct pci_dev *pdev = cp->pdev;
-	int i;
-
-	for (i = 0; i < N_TX_RINGS; i++) {
-		if (!cp->tx_tiny_bufs[i])
-			continue;
-
-		pci_free_consistent(pdev, TX_TINY_BUF_BLOCK,
-				    cp->tx_tiny_bufs[i],
-				    cp->tx_tiny_dvma[i]);
-		cp->tx_tiny_bufs[i] = NULL;
-	}
-}
-
-static int cas_tx_tiny_alloc(struct cas *cp)
-{
-	struct pci_dev *pdev = cp->pdev;
-	int i;
-
-	for (i = 0; i < N_TX_RINGS; i++) {
-		cp->tx_tiny_bufs[i] =
-			pci_alloc_consistent(pdev, TX_TINY_BUF_BLOCK,
-					     &cp->tx_tiny_dvma[i]);
-		if (!cp->tx_tiny_bufs[i]) {
-			cas_tx_tiny_free(cp);
-			return -1;
-		}
-	}
-	return 0;
-}
-
-
-static int cas_open(struct net_device *dev)
-{
-	struct cas *cp = netdev_priv(dev);
-	int hw_was_up, err;
-	unsigned long flags;
-
-	mutex_lock(&cp->pm_mutex);
-
-	hw_was_up = cp->hw_running;
-
-	/* The power-management mutex protects the hw_running
-	 * etc. state so it is safe to do this bit without cp->lock
-	 */
-	if (!cp->hw_running) {
-		/* Reset the chip */
-		cas_lock_all_save(cp, flags);
-		/* We set the second arg to cas_reset to zero
-		 * because cas_init_hw below will have its second
-		 * argument set to non-zero, which will force
-		 * autonegotiation to start.
-		 */
-		cas_reset(cp, 0);
-		cp->hw_running = 1;
-		cas_unlock_all_restore(cp, flags);
-	}
-
-	err = -ENOMEM;
-	if (cas_tx_tiny_alloc(cp) < 0)
-		goto err_unlock;
-
-	/* alloc rx descriptors */
-	if (cas_alloc_rxds(cp) < 0)
-		goto err_tx_tiny;
-
-	/* allocate spares */
-	cas_spare_init(cp);
-	cas_spare_recover(cp, GFP_KERNEL);
-
-	/* We can now request the interrupt as we know it's masked
-	 * on the controller. cassini+ has up to 4 interrupts
-	 * that can be used, but you need to do explicit pci interrupt
-	 * mapping to expose them
-	 */
-	if (request_irq(cp->pdev->irq, cas_interrupt,
-			IRQF_SHARED, dev->name, (void *) dev)) {
-		netdev_err(cp->dev, "failed to request irq !\n");
-		err = -EAGAIN;
-		goto err_spare;
-	}
-
-#ifdef USE_NAPI
-	napi_enable(&cp->napi);
-#endif
-	/* init hw */
-	cas_lock_all_save(cp, flags);
-	cas_clean_rings(cp);
-	cas_init_hw(cp, !hw_was_up);
-	cp->opened = 1;
-	cas_unlock_all_restore(cp, flags);
-
-	netif_start_queue(dev);
-	mutex_unlock(&cp->pm_mutex);
-	return 0;
-
-err_spare:
-	cas_spare_free(cp);
-	cas_free_rxds(cp);
-err_tx_tiny:
-	cas_tx_tiny_free(cp);
-err_unlock:
-	mutex_unlock(&cp->pm_mutex);
-	return err;
-}
-
-static int cas_close(struct net_device *dev)
-{
-	unsigned long flags;
-	struct cas *cp = netdev_priv(dev);
-
-#ifdef USE_NAPI
-	napi_disable(&cp->napi);
-#endif
-	/* Make sure we don't get distracted by suspend/resume */
-	mutex_lock(&cp->pm_mutex);
-
-	netif_stop_queue(dev);
-
-	/* Stop traffic, mark us closed */
-	cas_lock_all_save(cp, flags);
-	cp->opened = 0;
-	cas_reset(cp, 0);
-	cas_phy_init(cp);
-	cas_begin_auto_negotiation(cp, NULL);
-	cas_clean_rings(cp);
-	cas_unlock_all_restore(cp, flags);
-
-	free_irq(cp->pdev->irq, (void *) dev);
-	cas_spare_free(cp);
-	cas_free_rxds(cp);
-	cas_tx_tiny_free(cp);
-	mutex_unlock(&cp->pm_mutex);
-	return 0;
-}
-
-static struct {
-	const char name[ETH_GSTRING_LEN];
-} ethtool_cassini_statnames[] = {
-	{"collisions"},
-	{"rx_bytes"},
-	{"rx_crc_errors"},
-	{"rx_dropped"},
-	{"rx_errors"},
-	{"rx_fifo_errors"},
-	{"rx_frame_errors"},
-	{"rx_length_errors"},
-	{"rx_over_errors"},
-	{"rx_packets"},
-	{"tx_aborted_errors"},
-	{"tx_bytes"},
-	{"tx_dropped"},
-	{"tx_errors"},
-	{"tx_fifo_errors"},
-	{"tx_packets"}
-};
-#define CAS_NUM_STAT_KEYS ARRAY_SIZE(ethtool_cassini_statnames)
-
-static struct {
-	const int offsets;	/* neg. values for 2nd arg to cas_read_phy */
-} ethtool_register_table[] = {
-	{-MII_BMSR},
-	{-MII_BMCR},
-	{REG_CAWR},
-	{REG_INF_BURST},
-	{REG_BIM_CFG},
-	{REG_RX_CFG},
-	{REG_HP_CFG},
-	{REG_MAC_TX_CFG},
-	{REG_MAC_RX_CFG},
-	{REG_MAC_CTRL_CFG},
-	{REG_MAC_XIF_CFG},
-	{REG_MIF_CFG},
-	{REG_PCS_CFG},
-	{REG_SATURN_PCFG},
-	{REG_PCS_MII_STATUS},
-	{REG_PCS_STATE_MACHINE},
-	{REG_MAC_COLL_EXCESS},
-	{REG_MAC_COLL_LATE}
-};
-#define CAS_REG_LEN 	ARRAY_SIZE(ethtool_register_table)
-#define CAS_MAX_REGS 	(sizeof (u32)*CAS_REG_LEN)
-
-static void cas_read_regs(struct cas *cp, u8 *ptr, int len)
-{
-	u8 *p;
-	int i;
-	unsigned long flags;
-
-	spin_lock_irqsave(&cp->lock, flags);
-	for (i = 0, p = ptr; i < len ; i ++, p += sizeof(u32)) {
-		u16 hval;
-		u32 val;
-		if (ethtool_register_table[i].offsets < 0) {
-			hval = cas_phy_read(cp,
-				    -ethtool_register_table[i].offsets);
-			val = hval;
-		} else {
-			val= readl(cp->regs+ethtool_register_table[i].offsets);
-		}
-		memcpy(p, (u8 *)&val, sizeof(u32));
-	}
-	spin_unlock_irqrestore(&cp->lock, flags);
-}
-
-static struct net_device_stats *cas_get_stats(struct net_device *dev)
-{
-	struct cas *cp = netdev_priv(dev);
-	struct net_device_stats *stats = cp->net_stats;
-	unsigned long flags;
-	int i;
-	unsigned long tmp;
-
-	/* we collate all of the stats into net_stats[N_TX_RING] */
-	if (!cp->hw_running)
-		return stats + N_TX_RINGS;
-
-	/* collect outstanding stats */
-	/* WTZ: the Cassini spec gives these as 16 bit counters but
-	 * stored in 32-bit words.  Added a mask of 0xffff to be safe,
-	 * in case the chip somehow puts any garbage in the other bits.
-	 * Also, counter usage didn't seem to mach what Adrian did
-	 * in the parts of the code that set these quantities. Made
-	 * that consistent.
-	 */
-	spin_lock_irqsave(&cp->stat_lock[N_TX_RINGS], flags);
-	stats[N_TX_RINGS].rx_crc_errors +=
-	  readl(cp->regs + REG_MAC_FCS_ERR) & 0xffff;
-	stats[N_TX_RINGS].rx_frame_errors +=
-		readl(cp->regs + REG_MAC_ALIGN_ERR) &0xffff;
-	stats[N_TX_RINGS].rx_length_errors +=
-		readl(cp->regs + REG_MAC_LEN_ERR) & 0xffff;
-#if 1
-	tmp = (readl(cp->regs + REG_MAC_COLL_EXCESS) & 0xffff) +
-		(readl(cp->regs + REG_MAC_COLL_LATE) & 0xffff);
-	stats[N_TX_RINGS].tx_aborted_errors += tmp;
-	stats[N_TX_RINGS].collisions +=
-	  tmp + (readl(cp->regs + REG_MAC_COLL_NORMAL) & 0xffff);
-#else
-	stats[N_TX_RINGS].tx_aborted_errors +=
-		readl(cp->regs + REG_MAC_COLL_EXCESS);
-	stats[N_TX_RINGS].collisions += readl(cp->regs + REG_MAC_COLL_EXCESS) +
-		readl(cp->regs + REG_MAC_COLL_LATE);
-#endif
-	cas_clear_mac_err(cp);
-
-	/* saved bits that are unique to ring 0 */
-	spin_lock(&cp->stat_lock[0]);
-	stats[N_TX_RINGS].collisions        += stats[0].collisions;
-	stats[N_TX_RINGS].rx_over_errors    += stats[0].rx_over_errors;
-	stats[N_TX_RINGS].rx_frame_errors   += stats[0].rx_frame_errors;
-	stats[N_TX_RINGS].rx_fifo_errors    += stats[0].rx_fifo_errors;
-	stats[N_TX_RINGS].tx_aborted_errors += stats[0].tx_aborted_errors;
-	stats[N_TX_RINGS].tx_fifo_errors    += stats[0].tx_fifo_errors;
-	spin_unlock(&cp->stat_lock[0]);
-
-	for (i = 0; i < N_TX_RINGS; i++) {
-		spin_lock(&cp->stat_lock[i]);
-		stats[N_TX_RINGS].rx_length_errors +=
-			stats[i].rx_length_errors;
-		stats[N_TX_RINGS].rx_crc_errors += stats[i].rx_crc_errors;
-		stats[N_TX_RINGS].rx_packets    += stats[i].rx_packets;
-		stats[N_TX_RINGS].tx_packets    += stats[i].tx_packets;
-		stats[N_TX_RINGS].rx_bytes      += stats[i].rx_bytes;
-		stats[N_TX_RINGS].tx_bytes      += stats[i].tx_bytes;
-		stats[N_TX_RINGS].rx_errors     += stats[i].rx_errors;
-		stats[N_TX_RINGS].tx_errors     += stats[i].tx_errors;
-		stats[N_TX_RINGS].rx_dropped    += stats[i].rx_dropped;
-		stats[N_TX_RINGS].tx_dropped    += stats[i].tx_dropped;
-		memset(stats + i, 0, sizeof(struct net_device_stats));
-		spin_unlock(&cp->stat_lock[i]);
-	}
-	spin_unlock_irqrestore(&cp->stat_lock[N_TX_RINGS], flags);
-	return stats + N_TX_RINGS;
-}
-
-
-static void cas_set_multicast(struct net_device *dev)
-{
-	struct cas *cp = netdev_priv(dev);
-	u32 rxcfg, rxcfg_new;
-	unsigned long flags;
-	int limit = STOP_TRIES;
-
-	if (!cp->hw_running)
-		return;
-
-	spin_lock_irqsave(&cp->lock, flags);
-	rxcfg = readl(cp->regs + REG_MAC_RX_CFG);
-
-	/* disable RX MAC and wait for completion */
-	writel(rxcfg & ~MAC_RX_CFG_EN, cp->regs + REG_MAC_RX_CFG);
-	while (readl(cp->regs + REG_MAC_RX_CFG) & MAC_RX_CFG_EN) {
-		if (!limit--)
-			break;
-		udelay(10);
-	}
-
-	/* disable hash filter and wait for completion */
-	limit = STOP_TRIES;
-	rxcfg &= ~(MAC_RX_CFG_PROMISC_EN | MAC_RX_CFG_HASH_FILTER_EN);
-	writel(rxcfg & ~MAC_RX_CFG_EN, cp->regs + REG_MAC_RX_CFG);
-	while (readl(cp->regs + REG_MAC_RX_CFG) & MAC_RX_CFG_HASH_FILTER_EN) {
-		if (!limit--)
-			break;
-		udelay(10);
-	}
-
-	/* program hash filters */
-	cp->mac_rx_cfg = rxcfg_new = cas_setup_multicast(cp);
-	rxcfg |= rxcfg_new;
-	writel(rxcfg, cp->regs + REG_MAC_RX_CFG);
-	spin_unlock_irqrestore(&cp->lock, flags);
-}
-
-static void cas_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
-{
-	struct cas *cp = netdev_priv(dev);
-	strncpy(info->driver, DRV_MODULE_NAME, ETHTOOL_BUSINFO_LEN);
-	strncpy(info->version, DRV_MODULE_VERSION, ETHTOOL_BUSINFO_LEN);
-	info->fw_version[0] = '\0';
-	strncpy(info->bus_info, pci_name(cp->pdev), ETHTOOL_BUSINFO_LEN);
-	info->regdump_len = cp->casreg_len < CAS_MAX_REGS ?
-		cp->casreg_len : CAS_MAX_REGS;
-	info->n_stats = CAS_NUM_STAT_KEYS;
-}
-
-static int cas_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-	struct cas *cp = netdev_priv(dev);
-	u16 bmcr;
-	int full_duplex, speed, pause;
-	unsigned long flags;
-	enum link_state linkstate = link_up;
-
-	cmd->advertising = 0;
-	cmd->supported = SUPPORTED_Autoneg;
-	if (cp->cas_flags & CAS_FLAG_1000MB_CAP) {
-		cmd->supported |= SUPPORTED_1000baseT_Full;
-		cmd->advertising |= ADVERTISED_1000baseT_Full;
-	}
-
-	/* Record PHY settings if HW is on. */
-	spin_lock_irqsave(&cp->lock, flags);
-	bmcr = 0;
-	linkstate = cp->lstate;
-	if (CAS_PHY_MII(cp->phy_type)) {
-		cmd->port = PORT_MII;
-		cmd->transceiver = (cp->cas_flags & CAS_FLAG_SATURN) ?
-			XCVR_INTERNAL : XCVR_EXTERNAL;
-		cmd->phy_address = cp->phy_addr;
-		cmd->advertising |= ADVERTISED_TP | ADVERTISED_MII |
-			ADVERTISED_10baseT_Half |
-			ADVERTISED_10baseT_Full |
-			ADVERTISED_100baseT_Half |
-			ADVERTISED_100baseT_Full;
-
-		cmd->supported |=
-			(SUPPORTED_10baseT_Half |
-			 SUPPORTED_10baseT_Full |
-			 SUPPORTED_100baseT_Half |
-			 SUPPORTED_100baseT_Full |
-			 SUPPORTED_TP | SUPPORTED_MII);
-
-		if (cp->hw_running) {
-			cas_mif_poll(cp, 0);
-			bmcr = cas_phy_read(cp, MII_BMCR);
-			cas_read_mii_link_mode(cp, &full_duplex,
-					       &speed, &pause);
-			cas_mif_poll(cp, 1);
-		}
-
-	} else {
-		cmd->port = PORT_FIBRE;
-		cmd->transceiver = XCVR_INTERNAL;
-		cmd->phy_address = 0;
-		cmd->supported   |= SUPPORTED_FIBRE;
-		cmd->advertising |= ADVERTISED_FIBRE;
-
-		if (cp->hw_running) {
-			/* pcs uses the same bits as mii */
-			bmcr = readl(cp->regs + REG_PCS_MII_CTRL);
-			cas_read_pcs_link_mode(cp, &full_duplex,
-					       &speed, &pause);
-		}
-	}
-	spin_unlock_irqrestore(&cp->lock, flags);
-
-	if (bmcr & BMCR_ANENABLE) {
-		cmd->advertising |= ADVERTISED_Autoneg;
-		cmd->autoneg = AUTONEG_ENABLE;
-		ethtool_cmd_speed_set(cmd, ((speed == 10) ?
-					    SPEED_10 :
-					    ((speed == 1000) ?
-					     SPEED_1000 : SPEED_100)));
-		cmd->duplex = full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
-	} else {
-		cmd->autoneg = AUTONEG_DISABLE;
-		ethtool_cmd_speed_set(cmd, ((bmcr & CAS_BMCR_SPEED1000) ?
-					    SPEED_1000 :
-					    ((bmcr & BMCR_SPEED100) ?
-					     SPEED_100 : SPEED_10)));
-		cmd->duplex =
-			(bmcr & BMCR_FULLDPLX) ?
-			DUPLEX_FULL : DUPLEX_HALF;
-	}
-	if (linkstate != link_up) {
-		/* Force these to "unknown" if the link is not up and
-		 * autonogotiation in enabled. We can set the link
-		 * speed to 0, but not cmd->duplex,
-		 * because its legal values are 0 and 1.  Ethtool will
-		 * print the value reported in parentheses after the
-		 * word "Unknown" for unrecognized values.
-		 *
-		 * If in forced mode, we report the speed and duplex
-		 * settings that we configured.
-		 */
-		if (cp->link_cntl & BMCR_ANENABLE) {
-			ethtool_cmd_speed_set(cmd, 0);
-			cmd->duplex = 0xff;
-		} else {
-			ethtool_cmd_speed_set(cmd, SPEED_10);
-			if (cp->link_cntl & BMCR_SPEED100) {
-				ethtool_cmd_speed_set(cmd, SPEED_100);
-			} else if (cp->link_cntl & CAS_BMCR_SPEED1000) {
-				ethtool_cmd_speed_set(cmd, SPEED_1000);
-			}
-			cmd->duplex = (cp->link_cntl & BMCR_FULLDPLX)?
-				DUPLEX_FULL : DUPLEX_HALF;
-		}
-	}
-	return 0;
-}
-
-static int cas_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
-	struct cas *cp = netdev_priv(dev);
-	unsigned long flags;
-	u32 speed = ethtool_cmd_speed(cmd);
-
-	/* Verify the settings we care about. */
-	if (cmd->autoneg != AUTONEG_ENABLE &&
-	    cmd->autoneg != AUTONEG_DISABLE)
-		return -EINVAL;
-
-	if (cmd->autoneg == AUTONEG_DISABLE &&
-	    ((speed != SPEED_1000 &&
-	      speed != SPEED_100 &&
-	      speed != SPEED_10) ||
-	     (cmd->duplex != DUPLEX_HALF &&
-	      cmd->duplex != DUPLEX_FULL)))
-		return -EINVAL;
-
-	/* Apply settings and restart link process. */
-	spin_lock_irqsave(&cp->lock, flags);
-	cas_begin_auto_negotiation(cp, cmd);
-	spin_unlock_irqrestore(&cp->lock, flags);
-	return 0;
-}
-
-static int cas_nway_reset(struct net_device *dev)
-{
-	struct cas *cp = netdev_priv(dev);
-	unsigned long flags;
-
-	if ((cp->link_cntl & BMCR_ANENABLE) == 0)
-		return -EINVAL;
-
-	/* Restart link process. */
-	spin_lock_irqsave(&cp->lock, flags);
-	cas_begin_auto_negotiation(cp, NULL);
-	spin_unlock_irqrestore(&cp->lock, flags);
-
-	return 0;
-}
-
-static u32 cas_get_link(struct net_device *dev)
-{
-	struct cas *cp = netdev_priv(dev);
-	return cp->lstate == link_up;
-}
-
-static u32 cas_get_msglevel(struct net_device *dev)
-{
-	struct cas *cp = netdev_priv(dev);
-	return cp->msg_enable;
-}
-
-static void cas_set_msglevel(struct net_device *dev, u32 value)
-{
-	struct cas *cp = netdev_priv(dev);
-	cp->msg_enable = value;
-}
-
-static int cas_get_regs_len(struct net_device *dev)
-{
-	struct cas *cp = netdev_priv(dev);
-	return cp->casreg_len < CAS_MAX_REGS ? cp->casreg_len: CAS_MAX_REGS;
-}
-
-static void cas_get_regs(struct net_device *dev, struct ethtool_regs *regs,
-			     void *p)
-{
-	struct cas *cp = netdev_priv(dev);
-	regs->version = 0;
-	/* cas_read_regs handles locks (cp->lock).  */
-	cas_read_regs(cp, p, regs->len / sizeof(u32));
-}
-
-static int cas_get_sset_count(struct net_device *dev, int sset)
-{
-	switch (sset) {
-	case ETH_SS_STATS:
-		return CAS_NUM_STAT_KEYS;
-	default:
-		return -EOPNOTSUPP;
-	}
-}
-
-static void cas_get_strings(struct net_device *dev, u32 stringset, u8 *data)
-{
-	 memcpy(data, &ethtool_cassini_statnames,
-					 CAS_NUM_STAT_KEYS * ETH_GSTRING_LEN);
-}
-
-static void cas_get_ethtool_stats(struct net_device *dev,
-				      struct ethtool_stats *estats, u64 *data)
-{
-	struct cas *cp = netdev_priv(dev);
-	struct net_device_stats *stats = cas_get_stats(cp->dev);
-	int i = 0;
-	data[i++] = stats->collisions;
-	data[i++] = stats->rx_bytes;
-	data[i++] = stats->rx_crc_errors;
-	data[i++] = stats->rx_dropped;
-	data[i++] = stats->rx_errors;
-	data[i++] = stats->rx_fifo_errors;
-	data[i++] = stats->rx_frame_errors;
-	data[i++] = stats->rx_length_errors;
-	data[i++] = stats->rx_over_errors;
-	data[i++] = stats->rx_packets;
-	data[i++] = stats->tx_aborted_errors;
-	data[i++] = stats->tx_bytes;
-	data[i++] = stats->tx_dropped;
-	data[i++] = stats->tx_errors;
-	data[i++] = stats->tx_fifo_errors;
-	data[i++] = stats->tx_packets;
-	BUG_ON(i != CAS_NUM_STAT_KEYS);
-}
-
-static const struct ethtool_ops cas_ethtool_ops = {
-	.get_drvinfo		= cas_get_drvinfo,
-	.get_settings		= cas_get_settings,
-	.set_settings		= cas_set_settings,
-	.nway_reset		= cas_nway_reset,
-	.get_link		= cas_get_link,
-	.get_msglevel		= cas_get_msglevel,
-	.set_msglevel		= cas_set_msglevel,
-	.get_regs_len		= cas_get_regs_len,
-	.get_regs		= cas_get_regs,
-	.get_sset_count		= cas_get_sset_count,
-	.get_strings		= cas_get_strings,
-	.get_ethtool_stats	= cas_get_ethtool_stats,
-};
-
-static int cas_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
-	struct cas *cp = netdev_priv(dev);
-	struct mii_ioctl_data *data = if_mii(ifr);
-	unsigned long flags;
-	int rc = -EOPNOTSUPP;
-
-	/* Hold the PM mutex while doing ioctl's or we may collide
-	 * with open/close and power management and oops.
-	 */
-	mutex_lock(&cp->pm_mutex);
-	switch (cmd) {
-	case SIOCGMIIPHY:		/* Get address of MII PHY in use. */
-		data->phy_id = cp->phy_addr;
-		/* Fallthrough... */
-
-	case SIOCGMIIREG:		/* Read MII PHY register. */
-		spin_lock_irqsave(&cp->lock, flags);
-		cas_mif_poll(cp, 0);
-		data->val_out = cas_phy_read(cp, data->reg_num & 0x1f);
-		cas_mif_poll(cp, 1);
-		spin_unlock_irqrestore(&cp->lock, flags);
-		rc = 0;
-		break;
-
-	case SIOCSMIIREG:		/* Write MII PHY register. */
-		spin_lock_irqsave(&cp->lock, flags);
-		cas_mif_poll(cp, 0);
-		rc = cas_phy_write(cp, data->reg_num & 0x1f, data->val_in);
-		cas_mif_poll(cp, 1);
-		spin_unlock_irqrestore(&cp->lock, flags);
-		break;
-	default:
-		break;
-	}
-
-	mutex_unlock(&cp->pm_mutex);
-	return rc;
-}
-
-/* When this chip sits underneath an Intel 31154 bridge, it is the
- * only subordinate device and we can tweak the bridge settings to
- * reflect that fact.
- */
-static void __devinit cas_program_bridge(struct pci_dev *cas_pdev)
-{
-	struct pci_dev *pdev = cas_pdev->bus->self;
-	u32 val;
-
-	if (!pdev)
-		return;
-
-	if (pdev->vendor != 0x8086 || pdev->device != 0x537c)
-		return;
-
-	/* Clear bit 10 (Bus Parking Control) in the Secondary
-	 * Arbiter Control/Status Register which lives at offset
-	 * 0x41.  Using a 32-bit word read/modify/write at 0x40
-	 * is much simpler so that's how we do this.
-	 */
-	pci_read_config_dword(pdev, 0x40, &val);
-	val &= ~0x00040000;
-	pci_write_config_dword(pdev, 0x40, val);
-
-	/* Max out the Multi-Transaction Timer settings since
-	 * Cassini is the only device present.
-	 *
-	 * The register is 16-bit and lives at 0x50.  When the
-	 * settings are enabled, it extends the GRANT# signal
-	 * for a requestor after a transaction is complete.  This
-	 * allows the next request to run without first needing
-	 * to negotiate the GRANT# signal back.
-	 *
-	 * Bits 12:10 define the grant duration:
-	 *
-	 *	1	--	16 clocks
-	 *	2	--	32 clocks
-	 *	3	--	64 clocks
-	 *	4	--	128 clocks
-	 *	5	--	256 clocks
-	 *
-	 * All other values are illegal.
-	 *
-	 * Bits 09:00 define which REQ/GNT signal pairs get the
-	 * GRANT# signal treatment.  We set them all.
-	 */
-	pci_write_config_word(pdev, 0x50, (5 << 10) | 0x3ff);
-
-	/* The Read Prefecth Policy register is 16-bit and sits at
-	 * offset 0x52.  It enables a "smart" pre-fetch policy.  We
-	 * enable it and max out all of the settings since only one
-	 * device is sitting underneath and thus bandwidth sharing is
-	 * not an issue.
-	 *
-	 * The register has several 3 bit fields, which indicates a
-	 * multiplier applied to the base amount of prefetching the
-	 * chip would do.  These fields are at:
-	 *
-	 *	15:13	---	ReRead Primary Bus
-	 *	12:10	---	FirstRead Primary Bus
-	 *	09:07	---	ReRead Secondary Bus
-	 *	06:04	---	FirstRead Secondary Bus
-	 *
-	 * Bits 03:00 control which REQ/GNT pairs the prefetch settings
-	 * get enabled on.  Bit 3 is a grouped enabler which controls
-	 * all of the REQ/GNT pairs from [8:3].  Bits 2 to 0 control
-	 * the individual REQ/GNT pairs [2:0].
-	 */
-	pci_write_config_word(pdev, 0x52,
-			      (0x7 << 13) |
-			      (0x7 << 10) |
-			      (0x7 <<  7) |
-			      (0x7 <<  4) |
-			      (0xf <<  0));
-
-	/* Force cacheline size to 0x8 */
-	pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
-
-	/* Force latency timer to maximum setting so Cassini can
-	 * sit on the bus as long as it likes.
-	 */
-	pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xff);
-}
-
-static const struct net_device_ops cas_netdev_ops = {
-	.ndo_open		= cas_open,
-	.ndo_stop		= cas_close,
-	.ndo_start_xmit		= cas_start_xmit,
-	.ndo_get_stats 		= cas_get_stats,
-	.ndo_set_multicast_list = cas_set_multicast,
-	.ndo_do_ioctl		= cas_ioctl,
-	.ndo_tx_timeout		= cas_tx_timeout,
-	.ndo_change_mtu		= cas_change_mtu,
-	.ndo_set_mac_address	= eth_mac_addr,
-	.ndo_validate_addr	= eth_validate_addr,
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	.ndo_poll_controller	= cas_netpoll,
-#endif
-};
-
-static int __devinit cas_init_one(struct pci_dev *pdev,
-				  const struct pci_device_id *ent)
-{
-	static int cas_version_printed = 0;
-	unsigned long casreg_len;
-	struct net_device *dev;
-	struct cas *cp;
-	int i, err, pci_using_dac;
-	u16 pci_cmd;
-	u8 orig_cacheline_size = 0, cas_cacheline_size = 0;
-
-	if (cas_version_printed++ == 0)
-		pr_info("%s", version);
-
-	err = pci_enable_device(pdev);
-	if (err) {
-		dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
-		return err;
-	}
-
-	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
-		dev_err(&pdev->dev, "Cannot find proper PCI device "
-		       "base address, aborting\n");
-		err = -ENODEV;
-		goto err_out_disable_pdev;
-	}
-
-	dev = alloc_etherdev(sizeof(*cp));
-	if (!dev) {
-		dev_err(&pdev->dev, "Etherdev alloc failed, aborting\n");
-		err = -ENOMEM;
-		goto err_out_disable_pdev;
-	}
-	SET_NETDEV_DEV(dev, &pdev->dev);
-
-	err = pci_request_regions(pdev, dev->name);
-	if (err) {
-		dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
-		goto err_out_free_netdev;
-	}
-	pci_set_master(pdev);
-
-	/* we must always turn on parity response or else parity
-	 * doesn't get generated properly. disable SERR/PERR as well.
-	 * in addition, we want to turn MWI on.
-	 */
-	pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
-	pci_cmd &= ~PCI_COMMAND_SERR;
-	pci_cmd |= PCI_COMMAND_PARITY;
-	pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
-	if (pci_try_set_mwi(pdev))
-		pr_warning("Could not enable MWI for %s\n", pci_name(pdev));
-
-	cas_program_bridge(pdev);
-
-	/*
-	 * On some architectures, the default cache line size set
-	 * by pci_try_set_mwi reduces perforamnce.  We have to increase
-	 * it for this case.  To start, we'll print some configuration
-	 * data.
-	 */
-#if 1
-	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE,
-			     &orig_cacheline_size);
-	if (orig_cacheline_size < CAS_PREF_CACHELINE_SIZE) {
-		cas_cacheline_size =
-			(CAS_PREF_CACHELINE_SIZE < SMP_CACHE_BYTES) ?
-			CAS_PREF_CACHELINE_SIZE : SMP_CACHE_BYTES;
-		if (pci_write_config_byte(pdev,
-					  PCI_CACHE_LINE_SIZE,
-					  cas_cacheline_size)) {
-			dev_err(&pdev->dev, "Could not set PCI cache "
-			       "line size\n");
-			goto err_write_cacheline;
-		}
-	}
-#endif
-
-
-	/* Configure DMA attributes. */
-	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
-		pci_using_dac = 1;
-		err = pci_set_consistent_dma_mask(pdev,
-						  DMA_BIT_MASK(64));
-		if (err < 0) {
-			dev_err(&pdev->dev, "Unable to obtain 64-bit DMA "
-			       "for consistent allocations\n");
-			goto err_out_free_res;
-		}
-
-	} else {
-		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (err) {
-			dev_err(&pdev->dev, "No usable DMA configuration, "
-			       "aborting\n");
-			goto err_out_free_res;
-		}
-		pci_using_dac = 0;
-	}
-
-	casreg_len = pci_resource_len(pdev, 0);
-
-	cp = netdev_priv(dev);
-	cp->pdev = pdev;
-#if 1
-	/* A value of 0 indicates we never explicitly set it */
-	cp->orig_cacheline_size = cas_cacheline_size ? orig_cacheline_size: 0;
-#endif
-	cp->dev = dev;
-	cp->msg_enable = (cassini_debug < 0) ? CAS_DEF_MSG_ENABLE :
-	  cassini_debug;
-
-#if defined(CONFIG_SPARC)
-	cp->of_node = pci_device_to_OF_node(pdev);
-#endif
-
-	cp->link_transition = LINK_TRANSITION_UNKNOWN;
-	cp->link_transition_jiffies_valid = 0;
-
-	spin_lock_init(&cp->lock);
-	spin_lock_init(&cp->rx_inuse_lock);
-	spin_lock_init(&cp->rx_spare_lock);
-	for (i = 0; i < N_TX_RINGS; i++) {
-		spin_lock_init(&cp->stat_lock[i]);
-		spin_lock_init(&cp->tx_lock[i]);
-	}
-	spin_lock_init(&cp->stat_lock[N_TX_RINGS]);
-	mutex_init(&cp->pm_mutex);
-
-	init_timer(&cp->link_timer);
-	cp->link_timer.function = cas_link_timer;
-	cp->link_timer.data = (unsigned long) cp;
-
-#if 1
-	/* Just in case the implementation of atomic operations
-	 * change so that an explicit initialization is necessary.
-	 */
-	atomic_set(&cp->reset_task_pending, 0);
-	atomic_set(&cp->reset_task_pending_all, 0);
-	atomic_set(&cp->reset_task_pending_spare, 0);
-	atomic_set(&cp->reset_task_pending_mtu, 0);
-#endif
-	INIT_WORK(&cp->reset_task, cas_reset_task);
-
-	/* Default link parameters */
-	if (link_mode >= 0 && link_mode < 6)
-		cp->link_cntl = link_modes[link_mode];
-	else
-		cp->link_cntl = BMCR_ANENABLE;
-	cp->lstate = link_down;
-	cp->link_transition = LINK_TRANSITION_LINK_DOWN;
-	netif_carrier_off(cp->dev);
-	cp->timer_ticks = 0;
-
-	/* give us access to cassini registers */
-	cp->regs = pci_iomap(pdev, 0, casreg_len);
-	if (!cp->regs) {
-		dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
-		goto err_out_free_res;
-	}
-	cp->casreg_len = casreg_len;
-
-	pci_save_state(pdev);
-	cas_check_pci_invariants(cp);
-	cas_hard_reset(cp);
-	cas_reset(cp, 0);
-	if (cas_check_invariants(cp))
-		goto err_out_iounmap;
-	if (cp->cas_flags & CAS_FLAG_SATURN)
-		if (cas_saturn_firmware_init(cp))
-			goto err_out_iounmap;
-
-	cp->init_block = (struct cas_init_block *)
-		pci_alloc_consistent(pdev, sizeof(struct cas_init_block),
-				     &cp->block_dvma);
-	if (!cp->init_block) {
-		dev_err(&pdev->dev, "Cannot allocate init block, aborting\n");
-		goto err_out_iounmap;
-	}
-
-	for (i = 0; i < N_TX_RINGS; i++)
-		cp->init_txds[i] = cp->init_block->txds[i];
-
-	for (i = 0; i < N_RX_DESC_RINGS; i++)
-		cp->init_rxds[i] = cp->init_block->rxds[i];
-
-	for (i = 0; i < N_RX_COMP_RINGS; i++)
-		cp->init_rxcs[i] = cp->init_block->rxcs[i];
-
-	for (i = 0; i < N_RX_FLOWS; i++)
-		skb_queue_head_init(&cp->rx_flows[i]);
-
-	dev->netdev_ops = &cas_netdev_ops;
-	dev->ethtool_ops = &cas_ethtool_ops;
-	dev->watchdog_timeo = CAS_TX_TIMEOUT;
-
-#ifdef USE_NAPI
-	netif_napi_add(dev, &cp->napi, cas_poll, 64);
-#endif
-	dev->irq = pdev->irq;
-	dev->dma = 0;
-
-	/* Cassini features. */
-	if ((cp->cas_flags & CAS_FLAG_NO_HW_CSUM) == 0)
-		dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
-
-	if (pci_using_dac)
-		dev->features |= NETIF_F_HIGHDMA;
-
-	if (register_netdev(dev)) {
-		dev_err(&pdev->dev, "Cannot register net device, aborting\n");
-		goto err_out_free_consistent;
-	}
-
-	i = readl(cp->regs + REG_BIM_CFG);
-	netdev_info(dev, "Sun Cassini%s (%sbit/%sMHz PCI/%s) Ethernet[%d] %pM\n",
-		    (cp->cas_flags & CAS_FLAG_REG_PLUS) ? "+" : "",
-		    (i & BIM_CFG_32BIT) ? "32" : "64",
-		    (i & BIM_CFG_66MHZ) ? "66" : "33",
-		    (cp->phy_type == CAS_PHY_SERDES) ? "Fi" : "Cu", pdev->irq,
-		    dev->dev_addr);
-
-	pci_set_drvdata(pdev, dev);
-	cp->hw_running = 1;
-	cas_entropy_reset(cp);
-	cas_phy_init(cp);
-	cas_begin_auto_negotiation(cp, NULL);
-	return 0;
-
-err_out_free_consistent:
-	pci_free_consistent(pdev, sizeof(struct cas_init_block),
-			    cp->init_block, cp->block_dvma);
-
-err_out_iounmap:
-	mutex_lock(&cp->pm_mutex);
-	if (cp->hw_running)
-		cas_shutdown(cp);
-	mutex_unlock(&cp->pm_mutex);
-
-	pci_iounmap(pdev, cp->regs);
-
-
-err_out_free_res:
-	pci_release_regions(pdev);
-
-err_write_cacheline:
-	/* Try to restore it in case the error occurred after we
-	 * set it.
-	 */
-	pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, orig_cacheline_size);
-
-err_out_free_netdev:
-	free_netdev(dev);
-
-err_out_disable_pdev:
-	pci_disable_device(pdev);
-	pci_set_drvdata(pdev, NULL);
-	return -ENODEV;
-}
-
-static void __devexit cas_remove_one(struct pci_dev *pdev)
-{
-	struct net_device *dev = pci_get_drvdata(pdev);
-	struct cas *cp;
-	if (!dev)
-		return;
-
-	cp = netdev_priv(dev);
-	unregister_netdev(dev);
-
-	if (cp->fw_data)
-		vfree(cp->fw_data);
-
-	mutex_lock(&cp->pm_mutex);
-	cancel_work_sync(&cp->reset_task);
-	if (cp->hw_running)
-		cas_shutdown(cp);
-	mutex_unlock(&cp->pm_mutex);
-
-#if 1
-	if (cp->orig_cacheline_size) {
-		/* Restore the cache line size if we had modified
-		 * it.
-		 */
-		pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
-				      cp->orig_cacheline_size);
-	}
-#endif
-	pci_free_consistent(pdev, sizeof(struct cas_init_block),
-			    cp->init_block, cp->block_dvma);
-	pci_iounmap(pdev, cp->regs);
-	free_netdev(dev);
-	pci_release_regions(pdev);
-	pci_disable_device(pdev);
-	pci_set_drvdata(pdev, NULL);
-}
-
-#ifdef CONFIG_PM
-static int cas_suspend(struct pci_dev *pdev, pm_message_t state)
-{
-	struct net_device *dev = pci_get_drvdata(pdev);
-	struct cas *cp = netdev_priv(dev);
-	unsigned long flags;
-
-	mutex_lock(&cp->pm_mutex);
-
-	/* If the driver is opened, we stop the DMA */
-	if (cp->opened) {
-		netif_device_detach(dev);
-
-		cas_lock_all_save(cp, flags);
-
-		/* We can set the second arg of cas_reset to 0
-		 * because on resume, we'll call cas_init_hw with
-		 * its second arg set so that autonegotiation is
-		 * restarted.
-		 */
-		cas_reset(cp, 0);
-		cas_clean_rings(cp);
-		cas_unlock_all_restore(cp, flags);
-	}
-
-	if (cp->hw_running)
-		cas_shutdown(cp);
-	mutex_unlock(&cp->pm_mutex);
-
-	return 0;
-}
-
-static int cas_resume(struct pci_dev *pdev)
-{
-	struct net_device *dev = pci_get_drvdata(pdev);
-	struct cas *cp = netdev_priv(dev);
-
-	netdev_info(dev, "resuming\n");
-
-	mutex_lock(&cp->pm_mutex);
-	cas_hard_reset(cp);
-	if (cp->opened) {
-		unsigned long flags;
-		cas_lock_all_save(cp, flags);
-		cas_reset(cp, 0);
-		cp->hw_running = 1;
-		cas_clean_rings(cp);
-		cas_init_hw(cp, 1);
-		cas_unlock_all_restore(cp, flags);
-
-		netif_device_attach(dev);
-	}
-	mutex_unlock(&cp->pm_mutex);
-	return 0;
-}
-#endif /* CONFIG_PM */
-
-static struct pci_driver cas_driver = {
-	.name		= DRV_MODULE_NAME,
-	.id_table	= cas_pci_tbl,
-	.probe		= cas_init_one,
-	.remove		= __devexit_p(cas_remove_one),
-#ifdef CONFIG_PM
-	.suspend	= cas_suspend,
-	.resume		= cas_resume
-#endif
-};
-
-static int __init cas_init(void)
-{
-	if (linkdown_timeout > 0)
-		link_transition_timeout = linkdown_timeout * HZ;
-	else
-		link_transition_timeout = 0;
-
-	return pci_register_driver(&cas_driver);
-}
-
-static void __exit cas_cleanup(void)
-{
-	pci_unregister_driver(&cas_driver);
-}
-
-module_init(cas_init);
-module_exit(cas_cleanup);