Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2673 insertions, 0 deletions

diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c
new file mode 100644
index 0000000..b0d337f
--- /dev/null
+++ b/drivers/net/typhoon.c
@@ -0,0 +1,2673 @@
+/* typhoon.c: A Linux Ethernet device driver for 3Com 3CR990 family of NICs */
+/*
+	Written 2002-2004 by David Dillow <dave@thedillows.org>
+	Based on code written 1998-2000 by Donald Becker <becker@scyld.com> and
+	Linux 2.2.x driver by David P. McLean <davidpmclean@yahoo.com>.
+
+	This software may be used and distributed according to the terms of
+	the GNU General Public License (GPL), incorporated herein by reference.
+	Drivers based on or derived from this code fall under the GPL and must
+	retain the authorship, copyright and license notice.  This file is not
+	a complete program and may only be used when the entire operating
+	system is licensed under the GPL.
+
+	This software is available on a public web site. It may enable
+	cryptographic capabilities of the 3Com hardware, and may be
+	exported from the United States under License Exception "TSU"
+	pursuant to 15 C.F.R. Section 740.13(e).
+
+	This work was funded by the National Library of Medicine under
+	the Department of Energy project number 0274DD06D1 and NLM project
+	number Y1-LM-2015-01.
+
+	This driver is designed for the 3Com 3CR990 Family of cards with the
+	3XP Processor. It has been tested on x86 and sparc64.
+
+	KNOWN ISSUES:
+	*) The current firmware always strips the VLAN tag off, even if
+		we tell it not to. You should filter VLANs at the switch
+		as a workaround (good practice in any event) until we can
+		get this fixed.
+	*) Cannot DMA Rx packets to a 2 byte aligned address. Also firmware
+		issue. Hopefully 3Com will fix it.
+	*) Waiting for a command response takes 8ms due to non-preemptable
+		polling. Only significant for getting stats and creating
+		SAs, but an ugly wart never the less.
+
+	TODO:
+	*) Doesn't do IPSEC offloading. Yet. Keep yer pants on, it's coming.
+	*) Add more support for ethtool (especially for NIC stats)
+	*) Allow disabling of RX checksum offloading
+	*) Fix MAC changing to work while the interface is up
+		(Need to put commands on the TX ring, which changes
+		the locking)
+	*) Add in FCS to {rx,tx}_bytes, since the hardware doesn't. See
+		http://oss.sgi.com/cgi-bin/mesg.cgi?a=netdev&i=20031215152211.7003fe8e.rddunlap%40osdl.org
+*/
+
+/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
+ * Setting to > 1518 effectively disables this feature.
+ */
+static int rx_copybreak = 200;
+
+/* Should we use MMIO or Port IO?
+ * 0: Port IO
+ * 1: MMIO
+ * 2: Try MMIO, fallback to Port IO
+ */
+static unsigned int use_mmio = 2;
+
+/* end user-configurable values */
+
+/* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
+ */
+static const int multicast_filter_limit = 32;
+
+/* Operational parameters that are set at compile time. */
+
+/* Keep the ring sizes a power of two for compile efficiency.
+ * The compiler will convert <unsigned>'%'<2^N> into a bit mask.
+ * Making the Tx ring too large decreases the effectiveness of channel
+ * bonding and packet priority.
+ * There are no ill effects from too-large receive rings.
+ *
+ * We don't currently use the Hi Tx ring so, don't make it very big.
+ *
+ * Beware that if we start using the Hi Tx ring, we will need to change
+ * typhoon_num_free_tx() and typhoon_tx_complete() to account for that.
+ */
+#define TXHI_ENTRIES		2
+#define TXLO_ENTRIES		128
+#define RX_ENTRIES		32
+#define COMMAND_ENTRIES		16
+#define RESPONSE_ENTRIES	32
+
+#define COMMAND_RING_SIZE	(COMMAND_ENTRIES * sizeof(struct cmd_desc))
+#define RESPONSE_RING_SIZE	(RESPONSE_ENTRIES * sizeof(struct resp_desc))
+
+/* The 3XP will preload and remove 64 entries from the free buffer
+ * list, and we need one entry to keep the ring from wrapping, so 
+ * to keep this a power of two, we use 128 entries.
+ */
+#define RXFREE_ENTRIES		128
+#define RXENT_ENTRIES		(RXFREE_ENTRIES - 1)
+
+/* Operational parameters that usually are not changed. */
+
+/* Time in jiffies before concluding the transmitter is hung. */
+#define TX_TIMEOUT  (2*HZ)
+
+#define PKT_BUF_SZ		1536
+
+#define DRV_MODULE_NAME		"typhoon"
+#define DRV_MODULE_VERSION 	"1.5.7"
+#define DRV_MODULE_RELDATE	"05/01/07"
+#define PFX			DRV_MODULE_NAME ": "
+#define ERR_PFX			KERN_ERR PFX
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/crc32.h>
+#include <linux/bitops.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <linux/in6.h>
+#include <asm/checksum.h>
+#include <linux/version.h>
+#include <linux/dma-mapping.h>
+
+#include "typhoon.h"
+#include "typhoon-firmware.h"
+
+static char version[] __devinitdata =
+    "typhoon.c: version " DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
+
+MODULE_AUTHOR("David Dillow <dave@thedillows.org>");
+MODULE_VERSION(DRV_MODULE_VERSION);
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("3Com Typhoon Family (3C990, 3CR990, and variants)");
+MODULE_PARM_DESC(rx_copybreak, "Packets smaller than this are copied and "
+			       "the buffer given back to the NIC. Default "
+			       "is 200.");
+MODULE_PARM_DESC(use_mmio, "Use MMIO (1) or PIO(0) to access the NIC. "
+			   "Default is to try MMIO and fallback to PIO.");
+module_param(rx_copybreak, int, 0);
+module_param(use_mmio, int, 0);
+
+#if defined(NETIF_F_TSO) && MAX_SKB_FRAGS > 32
+#warning Typhoon only supports 32 entries in its SG list for TSO, disabling TSO
+#undef NETIF_F_TSO
+#endif
+
+#if TXLO_ENTRIES <= (2 * MAX_SKB_FRAGS)
+#error TX ring too small!
+#endif
+
+struct typhoon_card_info {
+	char *name;
+	int capabilities;
+};
+
+#define TYPHOON_CRYPTO_NONE		0x00
+#define TYPHOON_CRYPTO_DES		0x01
+#define TYPHOON_CRYPTO_3DES		0x02
+#define	TYPHOON_CRYPTO_VARIABLE		0x04
+#define TYPHOON_FIBER			0x08
+#define TYPHOON_WAKEUP_NEEDS_RESET	0x10
+
+enum typhoon_cards {
+	TYPHOON_TX = 0, TYPHOON_TX95, TYPHOON_TX97, TYPHOON_SVR,
+	TYPHOON_SVR95, TYPHOON_SVR97, TYPHOON_TXM, TYPHOON_BSVR,
+	TYPHOON_FX95, TYPHOON_FX97, TYPHOON_FX95SVR, TYPHOON_FX97SVR,
+	TYPHOON_FXM,
+};
+
+/* directly indexed by enum typhoon_cards, above */
+static struct typhoon_card_info typhoon_card_info[] __devinitdata = {
+	{ "3Com Typhoon (3C990-TX)",
+		TYPHOON_CRYPTO_NONE},
+	{ "3Com Typhoon (3CR990-TX-95)",
+		TYPHOON_CRYPTO_DES},
+	{ "3Com Typhoon (3CR990-TX-97)",
+	 	TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES},
+	{ "3Com Typhoon (3C990SVR)",
+		TYPHOON_CRYPTO_NONE},
+	{ "3Com Typhoon (3CR990SVR95)",
+		TYPHOON_CRYPTO_DES},
+	{ "3Com Typhoon (3CR990SVR97)",
+	 	TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES},
+	{ "3Com Typhoon2 (3C990B-TX-M)",
+		TYPHOON_CRYPTO_VARIABLE},
+	{ "3Com Typhoon2 (3C990BSVR)",
+		TYPHOON_CRYPTO_VARIABLE},
+	{ "3Com Typhoon (3CR990-FX-95)",
+		TYPHOON_CRYPTO_DES | TYPHOON_FIBER},
+	{ "3Com Typhoon (3CR990-FX-97)",
+	 	TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES | TYPHOON_FIBER},
+	{ "3Com Typhoon (3CR990-FX-95 Server)",
+	 	TYPHOON_CRYPTO_DES | TYPHOON_FIBER},
+	{ "3Com Typhoon (3CR990-FX-97 Server)",
+	 	TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES | TYPHOON_FIBER},
+	{ "3Com Typhoon2 (3C990B-FX-97)",
+		TYPHOON_CRYPTO_VARIABLE | TYPHOON_FIBER},
+};
+
+/* Notes on the new subsystem numbering scheme:
+ * bits 0-1 indicate crypto capabilites: (0) variable, (1) DES, or (2) 3DES
+ * bit 4 indicates if this card has secured firmware (we don't support it)
+ * bit 8 indicates if this is a (0) copper or (1) fiber card
+ * bits 12-16 indicate card type: (0) client and (1) server
+ */
+static struct pci_device_id typhoon_pci_tbl[] = {
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0,TYPHOON_TX },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_TX_95,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_TX95 },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_TX_97,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_TX97 },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
+	  PCI_ANY_ID, 0x1000, 0, 0, TYPHOON_TXM },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
+	  PCI_ANY_ID, 0x1102, 0, 0, TYPHOON_FXM },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
+	  PCI_ANY_ID, 0x2000, 0, 0, TYPHOON_BSVR },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
+	  PCI_ANY_ID, 0x1101, 0, 0, TYPHOON_FX95 },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
+	  PCI_ANY_ID, 0x1102, 0, 0, TYPHOON_FX97 },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
+	  PCI_ANY_ID, 0x2101, 0, 0, TYPHOON_FX95SVR },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
+	  PCI_ANY_ID, 0x2102, 0, 0, TYPHOON_FX97SVR },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR95,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR95 },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR97,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR97 },
+	{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR },
+	{ 0, }
+};
+MODULE_DEVICE_TABLE(pci, typhoon_pci_tbl);
+
+/* Define the shared memory area
+ * Align everything the 3XP will normally be using.
+ * We'll need to move/align txHi if we start using that ring.
+ */
+#define __3xp_aligned	____cacheline_aligned
+struct typhoon_shared {
+	struct typhoon_interface	iface;
+	struct typhoon_indexes		indexes			__3xp_aligned;
+	struct tx_desc			txLo[TXLO_ENTRIES] 	__3xp_aligned;
+	struct rx_desc			rxLo[RX_ENTRIES]	__3xp_aligned;
+	struct rx_desc			rxHi[RX_ENTRIES]	__3xp_aligned;
+	struct cmd_desc			cmd[COMMAND_ENTRIES]	__3xp_aligned;
+	struct resp_desc		resp[RESPONSE_ENTRIES]	__3xp_aligned;
+	struct rx_free			rxBuff[RXFREE_ENTRIES]	__3xp_aligned;
+	u32				zeroWord;
+	struct tx_desc			txHi[TXHI_ENTRIES];
+} __attribute__ ((packed));
+
+struct rxbuff_ent {
+	struct sk_buff *skb;
+	dma_addr_t	dma_addr;
+};
+
+struct typhoon {
+	/* Tx cache line section */
+	struct transmit_ring 	txLoRing	____cacheline_aligned;	
+	struct pci_dev *	tx_pdev;
+	void __iomem		*tx_ioaddr;
+	u32			txlo_dma_addr;
+
+	/* Irq/Rx cache line section */
+	void __iomem		*ioaddr		____cacheline_aligned;
+	struct typhoon_indexes *indexes;
+	u8			awaiting_resp;
+	u8			duplex;
+	u8			speed;
+	u8			card_state;
+	struct basic_ring	rxLoRing;
+	struct pci_dev *	pdev;
+	struct net_device *	dev;
+	spinlock_t		state_lock;
+	struct vlan_group *	vlgrp;
+	struct basic_ring	rxHiRing;
+	struct basic_ring	rxBuffRing;
+	struct rxbuff_ent	rxbuffers[RXENT_ENTRIES];
+
+	/* general section */
+	spinlock_t		command_lock	____cacheline_aligned;
+	struct basic_ring	cmdRing;
+	struct basic_ring	respRing;
+	struct net_device_stats	stats;
+	struct net_device_stats	stats_saved;
+	const char *		name;
+	struct typhoon_shared *	shared;
+	dma_addr_t		shared_dma;
+	u16			xcvr_select;
+	u16			wol_events;
+	u32			offload;
+
+	/* unused stuff (future use) */
+	int			capabilities;
+	struct transmit_ring 	txHiRing;
+};
+
+enum completion_wait_values {
+	NoWait = 0, WaitNoSleep, WaitSleep,
+};
+
+/* These are the values for the typhoon.card_state variable.
+ * These determine where the statistics will come from in get_stats().
+ * The sleep image does not support the statistics we need.
+ */
+enum state_values {
+	Sleeping = 0, Running,
+};
+
+/* PCI writes are not guaranteed to be posted in order, but outstanding writes
+ * cannot pass a read, so this forces current writes to post.
+ */
+#define typhoon_post_pci_writes(x) \
+	do { if(likely(use_mmio)) ioread32(x+TYPHOON_REG_HEARTBEAT); } while(0)
+
+/* We'll wait up to six seconds for a reset, and half a second normally.
+ */
+#define TYPHOON_UDELAY			50
+#define TYPHOON_RESET_TIMEOUT_SLEEP	(6 * HZ)
+#define TYPHOON_RESET_TIMEOUT_NOSLEEP	((6 * 1000000) / TYPHOON_UDELAY)
+#define TYPHOON_WAIT_TIMEOUT		((1000000 / 2) / TYPHOON_UDELAY)
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 28)
+#define typhoon_synchronize_irq(x) synchronize_irq()
+#else
+#define typhoon_synchronize_irq(x) synchronize_irq(x)
+#endif
+
+#if defined(NETIF_F_TSO)
+#define skb_tso_size(x)		(skb_shinfo(x)->tso_size)
+#define TSO_NUM_DESCRIPTORS	2
+#define TSO_OFFLOAD_ON		TYPHOON_OFFLOAD_TCP_SEGMENT
+#else
+#define NETIF_F_TSO 		0
+#define skb_tso_size(x) 	0
+#define TSO_NUM_DESCRIPTORS	0
+#define TSO_OFFLOAD_ON		0
+#endif
+
+static inline void
+typhoon_inc_index(u32 *index, const int count, const int num_entries)
+{
+	/* Increment a ring index -- we can use this for all rings execept
+	 * the Rx rings, as they use different size descriptors
+	 * otherwise, everything is the same size as a cmd_desc
+	 */
+	*index += count * sizeof(struct cmd_desc);
+	*index %= num_entries * sizeof(struct cmd_desc);
+}
+
+static inline void
+typhoon_inc_cmd_index(u32 *index, const int count)
+{
+	typhoon_inc_index(index, count, COMMAND_ENTRIES);
+}
+
+static inline void
+typhoon_inc_resp_index(u32 *index, const int count)
+{
+	typhoon_inc_index(index, count, RESPONSE_ENTRIES);
+}
+
+static inline void
+typhoon_inc_rxfree_index(u32 *index, const int count)
+{
+	typhoon_inc_index(index, count, RXFREE_ENTRIES);
+}
+
+static inline void
+typhoon_inc_tx_index(u32 *index, const int count)
+{
+	/* if we start using the Hi Tx ring, this needs updateing */
+	typhoon_inc_index(index, count, TXLO_ENTRIES);
+}
+
+static inline void
+typhoon_inc_rx_index(u32 *index, const int count)
+{
+	/* sizeof(struct rx_desc) != sizeof(struct cmd_desc) */
+	*index += count * sizeof(struct rx_desc);
+	*index %= RX_ENTRIES * sizeof(struct rx_desc);
+}
+
+static int
+typhoon_reset(void __iomem *ioaddr, int wait_type)
+{
+	int i, err = 0;
+	int timeout;
+
+	if(wait_type == WaitNoSleep)
+		timeout = TYPHOON_RESET_TIMEOUT_NOSLEEP;
+	else
+		timeout = TYPHOON_RESET_TIMEOUT_SLEEP;
+
+	iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
+	iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
+
+	iowrite32(TYPHOON_RESET_ALL, ioaddr + TYPHOON_REG_SOFT_RESET);
+	typhoon_post_pci_writes(ioaddr);
+	udelay(1);
+	iowrite32(TYPHOON_RESET_NONE, ioaddr + TYPHOON_REG_SOFT_RESET);
+
+	if(wait_type != NoWait) {
+		for(i = 0; i < timeout; i++) {
+			if(ioread32(ioaddr + TYPHOON_REG_STATUS) ==
+			   TYPHOON_STATUS_WAITING_FOR_HOST)
+				goto out;
+
+			if(wait_type == WaitSleep) {
+				set_current_state(TASK_UNINTERRUPTIBLE);
+				schedule_timeout(1);
+			} else
+				udelay(TYPHOON_UDELAY);
+		}
+
+		err = -ETIMEDOUT;
+	}
+
+out:
+	iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
+	iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
+
+	/* The 3XP seems to need a little extra time to complete the load
+	 * of the sleep image before we can reliably boot it. Failure to
+	 * do this occasionally results in a hung adapter after boot in
+	 * typhoon_init_one() while trying to read the MAC address or
+	 * putting the card to sleep. 3Com's driver waits 5ms, but
+	 * that seems to be overkill. However, if we can sleep, we might
+	 * as well give it that much time. Otherwise, we'll give it 500us,
+	 * which should be enough (I've see it work well at 100us, but still
+	 * saw occasional problems.)
+	 */
+	if(wait_type == WaitSleep)
+		msleep(5);
+	else
+		udelay(500);
+	return err;
+}
+
+static int
+typhoon_wait_status(void __iomem *ioaddr, u32 wait_value)
+{
+	int i, err = 0;
+
+	for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
+		if(ioread32(ioaddr + TYPHOON_REG_STATUS) == wait_value)
+			goto out;
+		udelay(TYPHOON_UDELAY);
+	}
+
+	err = -ETIMEDOUT;
+
+out:
+	return err;
+}
+
+static inline void
+typhoon_media_status(struct net_device *dev, struct resp_desc *resp)
+{
+	if(resp->parm1 & TYPHOON_MEDIA_STAT_NO_LINK)
+		netif_carrier_off(dev);
+	else
+		netif_carrier_on(dev);
+}
+
+static inline void
+typhoon_hello(struct typhoon *tp)
+{
+	struct basic_ring *ring = &tp->cmdRing;
+	struct cmd_desc *cmd;
+
+	/* We only get a hello request if we've not sent anything to the
+	 * card in a long while. If the lock is held, then we're in the
+	 * process of issuing a command, so we don't need to respond.
+	 */
+	if(spin_trylock(&tp->command_lock)) {
+		cmd = (struct cmd_desc *)(ring->ringBase + ring->lastWrite);
+		typhoon_inc_cmd_index(&ring->lastWrite, 1);
+
+		INIT_COMMAND_NO_RESPONSE(cmd, TYPHOON_CMD_HELLO_RESP);
+		smp_wmb();
+		iowrite32(ring->lastWrite, tp->ioaddr + TYPHOON_REG_CMD_READY);
+		spin_unlock(&tp->command_lock);
+	}
+}
+
+static int
+typhoon_process_response(struct typhoon *tp, int resp_size,
+				struct resp_desc *resp_save)
+{
+	struct typhoon_indexes *indexes = tp->indexes;
+	struct resp_desc *resp;
+	u8 *base = tp->respRing.ringBase;
+	int count, len, wrap_len;
+	u32 cleared;
+	u32 ready;
+
+	cleared = le32_to_cpu(indexes->respCleared);
+	ready = le32_to_cpu(indexes->respReady);
+	while(cleared != ready) {
+		resp = (struct resp_desc *)(base + cleared);
+		count = resp->numDesc + 1;
+		if(resp_save && resp->seqNo) {
+			if(count > resp_size) {
+				resp_save->flags = TYPHOON_RESP_ERROR;
+				goto cleanup;
+			}
+
+			wrap_len = 0;
+			len = count * sizeof(*resp);
+			if(unlikely(cleared + len > RESPONSE_RING_SIZE)) {
+				wrap_len = cleared + len - RESPONSE_RING_SIZE;
+				len = RESPONSE_RING_SIZE - cleared;
+			}
+
+			memcpy(resp_save, resp, len);
+			if(unlikely(wrap_len)) {
+				resp_save += len / sizeof(*resp);
+				memcpy(resp_save, base, wrap_len);
+			}
+
+			resp_save = NULL;
+		} else if(resp->cmd == TYPHOON_CMD_READ_MEDIA_STATUS) {
+			typhoon_media_status(tp->dev, resp);
+		} else if(resp->cmd == TYPHOON_CMD_HELLO_RESP) {
+			typhoon_hello(tp);
+		} else {
+			printk(KERN_ERR "%s: dumping unexpected response "
+			       "0x%04x:%d:0x%02x:0x%04x:%08x:%08x\n",
+			       tp->name, le16_to_cpu(resp->cmd),
+			       resp->numDesc, resp->flags,
+			       le16_to_cpu(resp->parm1),
+			       le32_to_cpu(resp->parm2),
+			       le32_to_cpu(resp->parm3));
+		}
+
+cleanup:
+		typhoon_inc_resp_index(&cleared, count);
+	}
+
+	indexes->respCleared = cpu_to_le32(cleared);
+	wmb();
+	return (resp_save == NULL);
+}
+
+static inline int
+typhoon_num_free(int lastWrite, int lastRead, int ringSize)
+{
+	/* this works for all descriptors but rx_desc, as they are a
+	 * different size than the cmd_desc -- everyone else is the same
+	 */
+	lastWrite /= sizeof(struct cmd_desc);
+	lastRead /= sizeof(struct cmd_desc);
+	return (ringSize + lastRead - lastWrite - 1) % ringSize;
+}
+
+static inline int
+typhoon_num_free_cmd(struct typhoon *tp)
+{
+	int lastWrite = tp->cmdRing.lastWrite;
+	int cmdCleared = le32_to_cpu(tp->indexes->cmdCleared);
+
+	return typhoon_num_free(lastWrite, cmdCleared, COMMAND_ENTRIES);
+}
+
+static inline int
+typhoon_num_free_resp(struct typhoon *tp)
+{
+	int respReady = le32_to_cpu(tp->indexes->respReady);
+	int respCleared = le32_to_cpu(tp->indexes->respCleared);
+
+	return typhoon_num_free(respReady, respCleared, RESPONSE_ENTRIES);
+}
+
+static inline int
+typhoon_num_free_tx(struct transmit_ring *ring)
+{
+	/* if we start using the Hi Tx ring, this needs updating */
+	return typhoon_num_free(ring->lastWrite, ring->lastRead, TXLO_ENTRIES);
+}
+
+static int
+typhoon_issue_command(struct typhoon *tp, int num_cmd, struct cmd_desc *cmd,
+		      int num_resp, struct resp_desc *resp)
+{
+	struct typhoon_indexes *indexes = tp->indexes;
+	struct basic_ring *ring = &tp->cmdRing;
+	struct resp_desc local_resp;
+	int i, err = 0;
+	int got_resp;
+	int freeCmd, freeResp;
+	int len, wrap_len;
+
+	spin_lock(&tp->command_lock);
+
+	freeCmd = typhoon_num_free_cmd(tp);
+	freeResp = typhoon_num_free_resp(tp);
+
+	if(freeCmd < num_cmd || freeResp < num_resp) {
+		printk("%s: no descs for cmd, had (needed) %d (%d) cmd, "
+			"%d (%d) resp\n", tp->name, freeCmd, num_cmd,
+			freeResp, num_resp);
+		err = -ENOMEM;
+		goto out;
+	}
+
+	if(cmd->flags & TYPHOON_CMD_RESPOND) {
+		/* If we're expecting a response, but the caller hasn't given
+		 * us a place to put it, we'll provide one.
+		 */
+		tp->awaiting_resp = 1;
+		if(resp == NULL) {
+			resp = &local_resp;
+			num_resp = 1;
+		}
+	}
+
+	wrap_len = 0;
+	len = num_cmd * sizeof(*cmd);
+	if(unlikely(ring->lastWrite + len > COMMAND_RING_SIZE)) {
+		wrap_len = ring->lastWrite + len - COMMAND_RING_SIZE;
+		len = COMMAND_RING_SIZE - ring->lastWrite;
+	}
+
+	memcpy(ring->ringBase + ring->lastWrite, cmd, len);
+	if(unlikely(wrap_len)) {
+		struct cmd_desc *wrap_ptr = cmd;
+		wrap_ptr += len / sizeof(*cmd);
+		memcpy(ring->ringBase, wrap_ptr, wrap_len);
+	}
+
+	typhoon_inc_cmd_index(&ring->lastWrite, num_cmd);
+
+	/* "I feel a presence... another warrior is on the the mesa."
+	 */
+	wmb();
+	iowrite32(ring->lastWrite, tp->ioaddr + TYPHOON_REG_CMD_READY);
+	typhoon_post_pci_writes(tp->ioaddr);
+
+	if((cmd->flags & TYPHOON_CMD_RESPOND) == 0)
+		goto out;
+
+	/* Ugh. We'll be here about 8ms, spinning our thumbs, unable to
+	 * preempt or do anything other than take interrupts. So, don't
+	 * wait for a response unless you have to.
+	 *
+	 * I've thought about trying to sleep here, but we're called
+	 * from many contexts that don't allow that. Also, given the way
+	 * 3Com has implemented irq coalescing, we would likely timeout --
+	 * this has been observed in real life!
+	 *
+	 * The big killer is we have to wait to get stats from the card,
+	 * though we could go to a periodic refresh of those if we don't
+	 * mind them getting somewhat stale. The rest of the waiting
+	 * commands occur during open/close/suspend/resume, so they aren't
+	 * time critical. Creating SAs in the future will also have to
+	 * wait here.
+	 */
+	got_resp = 0;
+	for(i = 0; i < TYPHOON_WAIT_TIMEOUT && !got_resp; i++) {
+		if(indexes->respCleared != indexes->respReady)
+			got_resp = typhoon_process_response(tp, num_resp,
+								resp);
+		udelay(TYPHOON_UDELAY);
+	}
+
+	if(!got_resp) {
+		err = -ETIMEDOUT;
+		goto out;
+	}
+
+	/* Collect the error response even if we don't care about the
+	 * rest of the response
+	 */
+	if(resp->flags & TYPHOON_RESP_ERROR)
+		err = -EIO;
+
+out:
+	if(tp->awaiting_resp) {
+		tp->awaiting_resp = 0;
+		smp_wmb();
+
+		/* Ugh. If a response was added to the ring between
+		 * the call to typhoon_process_response() and the clearing
+		 * of tp->awaiting_resp, we could have missed the interrupt
+		 * and it could hang in the ring an indeterminate amount of
+		 * time. So, check for it, and interrupt ourselves if this
+		 * is the case.
+		 */
+		if(indexes->respCleared != indexes->respReady)
+			iowrite32(1, tp->ioaddr + TYPHOON_REG_SELF_INTERRUPT);
+	}
+
+	spin_unlock(&tp->command_lock);
+	return err;
+}
+
+static void
+typhoon_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
+{
+	struct typhoon *tp = netdev_priv(dev);
+	struct cmd_desc xp_cmd;
+	int err;
+
+	spin_lock_bh(&tp->state_lock);
+	if(!tp->vlgrp != !grp) {
+		/* We've either been turned on for the first time, or we've
+		 * been turned off. Update the 3XP.
+		 */
+		if(grp)
+			tp->offload |= TYPHOON_OFFLOAD_VLAN;
+		else
+			tp->offload &= ~TYPHOON_OFFLOAD_VLAN;
+
+		/* If the interface is up, the runtime is running -- and we
+		 * must be up for the vlan core to call us.
+		 *
+		 * Do the command outside of the spin lock, as it is slow.
+		 */
+		INIT_COMMAND_WITH_RESPONSE(&xp_cmd,
+					TYPHOON_CMD_SET_OFFLOAD_TASKS);
+		xp_cmd.parm2 = tp->offload;
+		xp_cmd.parm3 = tp->offload;
+		spin_unlock_bh(&tp->state_lock);
+		err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+		if(err < 0)
+			printk("%s: vlan offload error %d\n", tp->name, -err);
+		spin_lock_bh(&tp->state_lock);
+	}
+
+	/* now make the change visible */
+	tp->vlgrp = grp;
+	spin_unlock_bh(&tp->state_lock);
+}
+
+static void
+typhoon_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
+{
+	struct typhoon *tp = netdev_priv(dev);
+	spin_lock_bh(&tp->state_lock);
+	if(tp->vlgrp)
+		tp->vlgrp->vlan_devices[vid] = NULL;
+	spin_unlock_bh(&tp->state_lock);
+}
+
+static inline void
+typhoon_tso_fill(struct sk_buff *skb, struct transmit_ring *txRing,
+			u32 ring_dma)
+{
+	struct tcpopt_desc *tcpd;
+	u32 tcpd_offset = ring_dma;
+
+	tcpd = (struct tcpopt_desc *) (txRing->ringBase + txRing->lastWrite);
+	tcpd_offset += txRing->lastWrite;
+	tcpd_offset += offsetof(struct tcpopt_desc, bytesTx);
+	typhoon_inc_tx_index(&txRing->lastWrite, 1);
+
+	tcpd->flags = TYPHOON_OPT_DESC | TYPHOON_OPT_TCP_SEG;
+	tcpd->numDesc = 1;
+	tcpd->mss_flags = cpu_to_le16(skb_tso_size(skb));
+	tcpd->mss_flags |= TYPHOON_TSO_FIRST | TYPHOON_TSO_LAST;
+	tcpd->respAddrLo = cpu_to_le32(tcpd_offset);
+	tcpd->bytesTx = cpu_to_le32(skb->len);
+	tcpd->status = 0;
+}
+
+static int
+typhoon_start_tx(struct sk_buff *skb, struct net_device *dev)
+{
+	struct typhoon *tp = netdev_priv(dev);
+	struct transmit_ring *txRing;
+	struct tx_desc *txd, *first_txd;
+	dma_addr_t skb_dma;
+	int numDesc;
+
+	/* we have two rings to choose from, but we only use txLo for now
+	 * If we start using the Hi ring as well, we'll need to update
+	 * typhoon_stop_runtime(), typhoon_interrupt(), typhoon_num_free_tx(),
+	 * and TXHI_ENTIRES to match, as well as update the TSO code below
+	 * to get the right DMA address
+	 */
+	txRing = &tp->txLoRing;
+
+	/* We need one descriptor for each fragment of the sk_buff, plus the
+	 * one for the ->data area of it.
+	 *
+	 * The docs say a maximum of 16 fragment descriptors per TCP option
+	 * descriptor, then make a new packet descriptor and option descriptor
+	 * for the next 16 fragments. The engineers say just an option
+	 * descriptor is needed. I've tested up to 26 fragments with a single
+	 * packet descriptor/option descriptor combo, so I use that for now.
+	 *
+	 * If problems develop with TSO, check this first.
+	 */
+	numDesc = skb_shinfo(skb)->nr_frags + 1;
+	if(skb_tso_size(skb))
+		numDesc++;
+
+	/* When checking for free space in the ring, we need to also
+	 * account for the initial Tx descriptor, and we always must leave
+	 * at least one descriptor unused in the ring so that it doesn't
+	 * wrap and look empty.
+	 *
+	 * The only time we should loop here is when we hit the race
+	 * between marking the queue awake and updating the cleared index.
+	 * Just loop and it will appear. This comes from the acenic driver.
+	 */
+	while(unlikely(typhoon_num_free_tx(txRing) < (numDesc + 2)))
+		smp_rmb();
+
+	first_txd = (struct tx_desc *) (txRing->ringBase + txRing->lastWrite);
+	typhoon_inc_tx_index(&txRing->lastWrite, 1);
+
+	first_txd->flags = TYPHOON_TX_DESC | TYPHOON_DESC_VALID;
+	first_txd->numDesc = 0;
+	first_txd->len = 0;
+	first_txd->addr = (u64)((unsigned long) skb) & 0xffffffff;
+	first_txd->addrHi = (u64)((unsigned long) skb) >> 32;
+	first_txd->processFlags = 0;
+
+	if(skb->ip_summed == CHECKSUM_HW) {
+		/* The 3XP will figure out if this is UDP/TCP */
+		first_txd->processFlags |= TYPHOON_TX_PF_TCP_CHKSUM;
+		first_txd->processFlags |= TYPHOON_TX_PF_UDP_CHKSUM;
+		first_txd->processFlags |= TYPHOON_TX_PF_IP_CHKSUM;
+	}
+
+	if(vlan_tx_tag_present(skb)) {
+		first_txd->processFlags |=
+		    TYPHOON_TX_PF_INSERT_VLAN | TYPHOON_TX_PF_VLAN_PRIORITY;
+		first_txd->processFlags |=
+		    cpu_to_le32(htons(vlan_tx_tag_get(skb)) <<
+				TYPHOON_TX_PF_VLAN_TAG_SHIFT);
+	}
+
+	if(skb_tso_size(skb)) {
+		first_txd->processFlags |= TYPHOON_TX_PF_TCP_SEGMENT;
+		first_txd->numDesc++;
+
+		typhoon_tso_fill(skb, txRing, tp->txlo_dma_addr);
+	}
+
+	txd = (struct tx_desc *) (txRing->ringBase + txRing->lastWrite);
+	typhoon_inc_tx_index(&txRing->lastWrite, 1);
+
+	/* No need to worry about padding packet -- the firmware pads
+	 * it with zeros to ETH_ZLEN for us.
+	 */
+	if(skb_shinfo(skb)->nr_frags == 0) {
+		skb_dma = pci_map_single(tp->tx_pdev, skb->data, skb->len,
+				       PCI_DMA_TODEVICE);
+		txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
+		txd->len = cpu_to_le16(skb->len);
+		txd->addr = cpu_to_le32(skb_dma);
+		txd->addrHi = 0;
+		first_txd->numDesc++;
+	} else {
+		int i, len;
+
+		len = skb_headlen(skb);
+		skb_dma = pci_map_single(tp->tx_pdev, skb->data, len,
+				         PCI_DMA_TODEVICE);
+		txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
+		txd->len = cpu_to_le16(len);
+		txd->addr = cpu_to_le32(skb_dma);
+		txd->addrHi = 0;
+		first_txd->numDesc++;
+
+		for(i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+			skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+			void *frag_addr;
+
+			txd = (struct tx_desc *) (txRing->ringBase +
+						txRing->lastWrite);
+			typhoon_inc_tx_index(&txRing->lastWrite, 1);
+
+			len = frag->size;
+			frag_addr = (void *) page_address(frag->page) +
+						frag->page_offset;
+			skb_dma = pci_map_single(tp->tx_pdev, frag_addr, len,
+					 PCI_DMA_TODEVICE);
+			txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
+			txd->len = cpu_to_le16(len);
+			txd->addr = cpu_to_le32(skb_dma);
+			txd->addrHi = 0;
+			first_txd->numDesc++;
+		}
+	}
+
+	/* Kick the 3XP
+	 */
+	wmb();
+	iowrite32(txRing->lastWrite, tp->tx_ioaddr + txRing->writeRegister);
+
+	dev->trans_start = jiffies;
+
+	/* If we don't have room to put the worst case packet on the
+	 * queue, then we must stop the queue. We need 2 extra
+	 * descriptors -- one to prevent ring wrap, and one for the
+	 * Tx header.
+	 */
+	numDesc = MAX_SKB_FRAGS + TSO_NUM_DESCRIPTORS + 1;
+
+	if(typhoon_num_free_tx(txRing) < (numDesc + 2)) {
+		netif_stop_queue(dev);
+
+		/* A Tx complete IRQ could have gotten inbetween, making
+		 * the ring free again. Only need to recheck here, since
+		 * Tx is serialized.
+		 */
+		if(typhoon_num_free_tx(txRing) >= (numDesc + 2))
+			netif_wake_queue(dev);
+	}
+
+	return 0;
+}
+
+static void
+typhoon_set_rx_mode(struct net_device *dev)
+{
+	struct typhoon *tp = netdev_priv(dev);
+	struct cmd_desc xp_cmd;
+	u32 mc_filter[2];
+	u16 filter;
+
+	filter = TYPHOON_RX_FILTER_DIRECTED | TYPHOON_RX_FILTER_BROADCAST;
+	if(dev->flags & IFF_PROMISC) {
+		printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
+		       dev->name);
+		filter |= TYPHOON_RX_FILTER_PROMISCOUS;
+	} else if((dev->mc_count > multicast_filter_limit) ||
+		  (dev->flags & IFF_ALLMULTI)) {
+		/* Too many to match, or accept all multicasts. */
+		filter |= TYPHOON_RX_FILTER_ALL_MCAST;
+	} else if(dev->mc_count) {
+		struct dev_mc_list *mclist;
+		int i;
+
+		memset(mc_filter, 0, sizeof(mc_filter));
+		for(i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
+		    i++, mclist = mclist->next) {
+			int bit = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3f;
+			mc_filter[bit >> 5] |= 1 << (bit & 0x1f);
+		}
+
+		INIT_COMMAND_NO_RESPONSE(&xp_cmd,
+					 TYPHOON_CMD_SET_MULTICAST_HASH);
+		xp_cmd.parm1 = TYPHOON_MCAST_HASH_SET;
+		xp_cmd.parm2 = cpu_to_le32(mc_filter[0]);
+		xp_cmd.parm3 = cpu_to_le32(mc_filter[1]);
+		typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+
+		filter |= TYPHOON_RX_FILTER_MCAST_HASH;
+	}
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_RX_FILTER);
+	xp_cmd.parm1 = filter;
+	typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+}
+
+static int
+typhoon_do_get_stats(struct typhoon *tp)
+{
+	struct net_device_stats *stats = &tp->stats;
+	struct net_device_stats *saved = &tp->stats_saved;
+	struct cmd_desc xp_cmd;
+	struct resp_desc xp_resp[7];
+	struct stats_resp *s = (struct stats_resp *) xp_resp;
+	int err;
+
+	INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_STATS);
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 7, xp_resp);
+	if(err < 0)
+		return err;
+
+	/* 3Com's Linux driver uses txMultipleCollisions as it's
+	 * collisions value, but there is some other collision info as well...
+	 *
+	 * The extra status reported would be a good candidate for
+	 * ethtool_ops->get_{strings,stats}()
+	 */
+	stats->tx_packets = le32_to_cpu(s->txPackets);
+	stats->tx_bytes = le32_to_cpu(s->txBytes);
+	stats->tx_errors = le32_to_cpu(s->txCarrierLost);
+	stats->tx_carrier_errors = le32_to_cpu(s->txCarrierLost);
+	stats->collisions = le32_to_cpu(s->txMultipleCollisions);
+	stats->rx_packets = le32_to_cpu(s->rxPacketsGood);
+	stats->rx_bytes = le32_to_cpu(s->rxBytesGood);
+	stats->rx_fifo_errors = le32_to_cpu(s->rxFifoOverruns);
+	stats->rx_errors = le32_to_cpu(s->rxFifoOverruns) +
+			le32_to_cpu(s->BadSSD) + le32_to_cpu(s->rxCrcErrors);
+	stats->rx_crc_errors = le32_to_cpu(s->rxCrcErrors);
+	stats->rx_length_errors = le32_to_cpu(s->rxOversized);
+	tp->speed = (s->linkStatus & TYPHOON_LINK_100MBPS) ?
+			SPEED_100 : SPEED_10;
+	tp->duplex = (s->linkStatus & TYPHOON_LINK_FULL_DUPLEX) ?
+			DUPLEX_FULL : DUPLEX_HALF;
+
+	/* add in the saved statistics
+	 */
+	stats->tx_packets += saved->tx_packets;
+	stats->tx_bytes += saved->tx_bytes;
+	stats->tx_errors += saved->tx_errors;
+	stats->collisions += saved->collisions;
+	stats->rx_packets += saved->rx_packets;
+	stats->rx_bytes += saved->rx_bytes;
+	stats->rx_fifo_errors += saved->rx_fifo_errors;
+	stats->rx_errors += saved->rx_errors;
+	stats->rx_crc_errors += saved->rx_crc_errors;
+	stats->rx_length_errors += saved->rx_length_errors;
+
+	return 0;
+}
+
+static struct net_device_stats *
+typhoon_get_stats(struct net_device *dev)
+{
+	struct typhoon *tp = netdev_priv(dev);
+	struct net_device_stats *stats = &tp->stats;
+	struct net_device_stats *saved = &tp->stats_saved;
+
+	smp_rmb();
+	if(tp->card_state == Sleeping)
+		return saved;
+
+	if(typhoon_do_get_stats(tp) < 0) {
+		printk(KERN_ERR "%s: error getting stats\n", dev->name);
+		return saved;
+	}
+
+	return stats;
+}
+
+static int
+typhoon_set_mac_address(struct net_device *dev, void *addr)
+{
+	struct sockaddr *saddr = (struct sockaddr *) addr;
+
+	if(netif_running(dev))
+		return -EBUSY;
+
+	memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
+	return 0;
+}
+
+static void
+typhoon_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	struct typhoon *tp = netdev_priv(dev);
+	struct pci_dev *pci_dev = tp->pdev;
+	struct cmd_desc xp_cmd;
+	struct resp_desc xp_resp[3];
+
+	smp_rmb();
+	if(tp->card_state == Sleeping) {
+		strcpy(info->fw_version, "Sleep image");
+	} else {
+		INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_VERSIONS);
+		if(typhoon_issue_command(tp, 1, &xp_cmd, 3, xp_resp) < 0) {
+			strcpy(info->fw_version, "Unknown runtime");
+		} else {
+			u32 sleep_ver = xp_resp[0].parm2;
+			snprintf(info->fw_version, 32, "%02x.%03x.%03x",
+				 sleep_ver >> 24, (sleep_ver >> 12) & 0xfff, 
+				 sleep_ver & 0xfff);
+		}
+	}
+
+	strcpy(info->driver, DRV_MODULE_NAME);
+	strcpy(info->version, DRV_MODULE_VERSION);
+	strcpy(info->bus_info, pci_name(pci_dev));
+}
+
+static int
+typhoon_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct typhoon *tp = netdev_priv(dev);
+
+	cmd->supported = SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
+				SUPPORTED_Autoneg;
+
+	switch (tp->xcvr_select) {
+	case TYPHOON_XCVR_10HALF:
+		cmd->advertising = ADVERTISED_10baseT_Half;
+		break;
+	case TYPHOON_XCVR_10FULL:
+		cmd->advertising = ADVERTISED_10baseT_Full;
+		break;
+	case TYPHOON_XCVR_100HALF:
+		cmd->advertising = ADVERTISED_100baseT_Half;
+		break;
+	case TYPHOON_XCVR_100FULL:
+		cmd->advertising = ADVERTISED_100baseT_Full;
+		break;
+	case TYPHOON_XCVR_AUTONEG:
+		cmd->advertising = ADVERTISED_10baseT_Half |
+					    ADVERTISED_10baseT_Full |
+					    ADVERTISED_100baseT_Half |
+					    ADVERTISED_100baseT_Full |
+					    ADVERTISED_Autoneg;
+		break;
+	}
+
+	if(tp->capabilities & TYPHOON_FIBER) {
+		cmd->supported |= SUPPORTED_FIBRE;
+		cmd->advertising |= ADVERTISED_FIBRE;
+		cmd->port = PORT_FIBRE;
+	} else {
+		cmd->supported |= SUPPORTED_10baseT_Half |
+		    			SUPPORTED_10baseT_Full |
+					SUPPORTED_TP;
+		cmd->advertising |= ADVERTISED_TP;
+		cmd->port = PORT_TP;
+	}
+
+	/* need to get stats to make these link speed/duplex valid */
+	typhoon_do_get_stats(tp);
+	cmd->speed = tp->speed;
+	cmd->duplex = tp->duplex;
+	cmd->phy_address = 0;
+	cmd->transceiver = XCVR_INTERNAL;
+	if(tp->xcvr_select == TYPHOON_XCVR_AUTONEG)
+		cmd->autoneg = AUTONEG_ENABLE;
+	else
+		cmd->autoneg = AUTONEG_DISABLE;
+	cmd->maxtxpkt = 1;
+	cmd->maxrxpkt = 1;
+
+	return 0;
+}
+
+static int
+typhoon_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct typhoon *tp = netdev_priv(dev);
+	struct cmd_desc xp_cmd;
+	int xcvr;
+	int err;
+
+	err = -EINVAL;
+	if(cmd->autoneg == AUTONEG_ENABLE) {
+		xcvr = TYPHOON_XCVR_AUTONEG;
+	} else {
+		if(cmd->duplex == DUPLEX_HALF) {
+			if(cmd->speed == SPEED_10)
+				xcvr = TYPHOON_XCVR_10HALF;
+			else if(cmd->speed == SPEED_100)
+				xcvr = TYPHOON_XCVR_100HALF;
+			else
+				goto out;
+		} else if(cmd->duplex == DUPLEX_FULL) {
+			if(cmd->speed == SPEED_10)
+				xcvr = TYPHOON_XCVR_10FULL;
+			else if(cmd->speed == SPEED_100)
+				xcvr = TYPHOON_XCVR_100FULL;
+			else
+				goto out;
+		} else
+			goto out;
+	}
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_XCVR_SELECT);
+	xp_cmd.parm1 = cpu_to_le16(xcvr);
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	if(err < 0)
+		goto out;
+
+	tp->xcvr_select = xcvr;
+	if(cmd->autoneg == AUTONEG_ENABLE) {
+		tp->speed = 0xff;	/* invalid */
+		tp->duplex = 0xff;	/* invalid */
+	} else {
+		tp->speed = cmd->speed;
+		tp->duplex = cmd->duplex;
+	}
+
+out:
+	return err;
+}
+
+static void
+typhoon_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+	struct typhoon *tp = netdev_priv(dev);
+
+	wol->supported = WAKE_PHY | WAKE_MAGIC;
+	wol->wolopts = 0;
+	if(tp->wol_events & TYPHOON_WAKE_LINK_EVENT)
+		wol->wolopts |= WAKE_PHY;
+	if(tp->wol_events & TYPHOON_WAKE_MAGIC_PKT)
+		wol->wolopts |= WAKE_MAGIC;
+	memset(&wol->sopass, 0, sizeof(wol->sopass));
+}
+
+static int
+typhoon_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+	struct typhoon *tp = netdev_priv(dev);
+
+	if(wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
+		return -EINVAL;
+
+	tp->wol_events = 0;
+	if(wol->wolopts & WAKE_PHY)
+		tp->wol_events |= TYPHOON_WAKE_LINK_EVENT;
+	if(wol->wolopts & WAKE_MAGIC)
+		tp->wol_events |= TYPHOON_WAKE_MAGIC_PKT;
+
+	return 0;
+}
+
+static u32
+typhoon_get_rx_csum(struct net_device *dev)
+{
+	/* For now, we don't allow turning off RX checksums.
+	 */
+	return 1;
+}
+
+static void
+typhoon_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
+{
+	ering->rx_max_pending = RXENT_ENTRIES;
+	ering->rx_mini_max_pending = 0;
+	ering->rx_jumbo_max_pending = 0;
+	ering->tx_max_pending = TXLO_ENTRIES - 1;
+
+	ering->rx_pending = RXENT_ENTRIES;
+	ering->rx_mini_pending = 0;
+	ering->rx_jumbo_pending = 0;
+	ering->tx_pending = TXLO_ENTRIES - 1;
+}
+
+static struct ethtool_ops typhoon_ethtool_ops = {
+	.get_settings		= typhoon_get_settings,
+	.set_settings		= typhoon_set_settings,
+	.get_drvinfo		= typhoon_get_drvinfo,
+	.get_wol		= typhoon_get_wol,
+	.set_wol		= typhoon_set_wol,
+	.get_link		= ethtool_op_get_link,
+	.get_rx_csum		= typhoon_get_rx_csum,
+	.get_tx_csum		= ethtool_op_get_tx_csum,
+	.set_tx_csum		= ethtool_op_set_tx_csum,
+	.get_sg			= ethtool_op_get_sg,
+	.set_sg			= ethtool_op_set_sg,
+	.get_tso		= ethtool_op_get_tso,
+	.set_tso		= ethtool_op_set_tso,
+	.get_ringparam		= typhoon_get_ringparam,
+};
+
+static int
+typhoon_wait_interrupt(void __iomem *ioaddr)
+{
+	int i, err = 0;
+
+	for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
+		if(ioread32(ioaddr + TYPHOON_REG_INTR_STATUS) &
+		   TYPHOON_INTR_BOOTCMD)
+			goto out;
+		udelay(TYPHOON_UDELAY);
+	}
+
+	err = -ETIMEDOUT;
+
+out:
+	iowrite32(TYPHOON_INTR_BOOTCMD, ioaddr + TYPHOON_REG_INTR_STATUS);
+	return err;
+}
+
+#define shared_offset(x)	offsetof(struct typhoon_shared, x)
+
+static void
+typhoon_init_interface(struct typhoon *tp)
+{
+	struct typhoon_interface *iface = &tp->shared->iface;
+	dma_addr_t shared_dma;
+
+	memset(tp->shared, 0, sizeof(struct typhoon_shared));
+
+	/* The *Hi members of iface are all init'd to zero by the memset().
+	 */
+	shared_dma = tp->shared_dma + shared_offset(indexes);
+	iface->ringIndex = cpu_to_le32(shared_dma);
+
+	shared_dma = tp->shared_dma + shared_offset(txLo);
+	iface->txLoAddr = cpu_to_le32(shared_dma);
+	iface->txLoSize = cpu_to_le32(TXLO_ENTRIES * sizeof(struct tx_desc));
+
+	shared_dma = tp->shared_dma + shared_offset(txHi);
+	iface->txHiAddr = cpu_to_le32(shared_dma);
+	iface->txHiSize = cpu_to_le32(TXHI_ENTRIES * sizeof(struct tx_desc));
+
+	shared_dma = tp->shared_dma + shared_offset(rxBuff);
+	iface->rxBuffAddr = cpu_to_le32(shared_dma);
+	iface->rxBuffSize = cpu_to_le32(RXFREE_ENTRIES *
+					sizeof(struct rx_free));
+
+	shared_dma = tp->shared_dma + shared_offset(rxLo);
+	iface->rxLoAddr = cpu_to_le32(shared_dma);
+	iface->rxLoSize = cpu_to_le32(RX_ENTRIES * sizeof(struct rx_desc));
+
+	shared_dma = tp->shared_dma + shared_offset(rxHi);
+	iface->rxHiAddr = cpu_to_le32(shared_dma);
+	iface->rxHiSize = cpu_to_le32(RX_ENTRIES * sizeof(struct rx_desc));
+
+	shared_dma = tp->shared_dma + shared_offset(cmd);
+	iface->cmdAddr = cpu_to_le32(shared_dma);
+	iface->cmdSize = cpu_to_le32(COMMAND_RING_SIZE);
+
+	shared_dma = tp->shared_dma + shared_offset(resp);
+	iface->respAddr = cpu_to_le32(shared_dma);
+	iface->respSize = cpu_to_le32(RESPONSE_RING_SIZE);
+
+	shared_dma = tp->shared_dma + shared_offset(zeroWord);
+	iface->zeroAddr = cpu_to_le32(shared_dma);
+
+	tp->indexes = &tp->shared->indexes;
+	tp->txLoRing.ringBase = (u8 *) tp->shared->txLo;
+	tp->txHiRing.ringBase = (u8 *) tp->shared->txHi;
+	tp->rxLoRing.ringBase = (u8 *) tp->shared->rxLo;
+	tp->rxHiRing.ringBase = (u8 *) tp->shared->rxHi;
+	tp->rxBuffRing.ringBase = (u8 *) tp->shared->rxBuff;
+	tp->cmdRing.ringBase = (u8 *) tp->shared->cmd;
+	tp->respRing.ringBase = (u8 *) tp->shared->resp;
+
+	tp->txLoRing.writeRegister = TYPHOON_REG_TX_LO_READY;
+	tp->txHiRing.writeRegister = TYPHOON_REG_TX_HI_READY;
+
+	tp->txlo_dma_addr = iface->txLoAddr;
+	tp->card_state = Sleeping;
+	smp_wmb();
+
+	tp->offload = TYPHOON_OFFLOAD_IP_CHKSUM | TYPHOON_OFFLOAD_TCP_CHKSUM;
+	tp->offload |= TYPHOON_OFFLOAD_UDP_CHKSUM | TSO_OFFLOAD_ON;
+
+	spin_lock_init(&tp->command_lock);
+	spin_lock_init(&tp->state_lock);
+}
+
+static void
+typhoon_init_rings(struct typhoon *tp)
+{
+	memset(tp->indexes, 0, sizeof(struct typhoon_indexes));
+
+	tp->txLoRing.lastWrite = 0;
+	tp->txHiRing.lastWrite = 0;
+	tp->rxLoRing.lastWrite = 0;
+	tp->rxHiRing.lastWrite = 0;
+	tp->rxBuffRing.lastWrite = 0;
+	tp->cmdRing.lastWrite = 0;
+	tp->cmdRing.lastWrite = 0;
+
+	tp->txLoRing.lastRead = 0;
+	tp->txHiRing.lastRead = 0;
+}
+
+static int
+typhoon_download_firmware(struct typhoon *tp)
+{
+	void __iomem *ioaddr = tp->ioaddr;
+	struct pci_dev *pdev = tp->pdev;
+	struct typhoon_file_header *fHdr;
+	struct typhoon_section_header *sHdr;
+	u8 *image_data;
+	void *dpage;
+	dma_addr_t dpage_dma;
+	unsigned int csum;
+	u32 irqEnabled;
+	u32 irqMasked;
+	u32 numSections;
+	u32 section_len;
+	u32 len;
+	u32 load_addr;
+	u32 hmac;
+	int i;
+	int err;
+
+	err = -EINVAL;
+	fHdr = (struct typhoon_file_header *) typhoon_firmware_image;
+	image_data = (u8 *) fHdr;
+
+	if(memcmp(fHdr->tag, "TYPHOON", 8)) {
+		printk(KERN_ERR "%s: Invalid firmware image!\n", tp->name);
+		goto err_out;
+	}
+
+	/* Cannot just map the firmware image using pci_map_single() as
+	 * the firmware is part of the kernel/module image, so we allocate
+	 * some consistent memory to copy the sections into, as it is simpler,
+	 * and short-lived. If we ever split out and require a userland
+	 * firmware loader, then we can revisit this.
+	 */
+	err = -ENOMEM;
+	dpage = pci_alloc_consistent(pdev, PAGE_SIZE, &dpage_dma);
+	if(!dpage) {
+		printk(KERN_ERR "%s: no DMA mem for firmware\n", tp->name);
+		goto err_out;
+	}
+
+	irqEnabled = ioread32(ioaddr + TYPHOON_REG_INTR_ENABLE);
+	iowrite32(irqEnabled | TYPHOON_INTR_BOOTCMD,
+	       ioaddr + TYPHOON_REG_INTR_ENABLE);
+	irqMasked = ioread32(ioaddr + TYPHOON_REG_INTR_MASK);
+	iowrite32(irqMasked | TYPHOON_INTR_BOOTCMD,
+	       ioaddr + TYPHOON_REG_INTR_MASK);
+
+	err = -ETIMEDOUT;
+	if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
+		printk(KERN_ERR "%s: card ready timeout\n", tp->name);
+		goto err_out_irq;
+	}
+
+	numSections = le32_to_cpu(fHdr->numSections);
+	load_addr = le32_to_cpu(fHdr->startAddr);
+
+	iowrite32(TYPHOON_INTR_BOOTCMD, ioaddr + TYPHOON_REG_INTR_STATUS);
+	iowrite32(load_addr, ioaddr + TYPHOON_REG_DOWNLOAD_BOOT_ADDR);
+	hmac = le32_to_cpu(fHdr->hmacDigest[0]);
+	iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_0);
+	hmac = le32_to_cpu(fHdr->hmacDigest[1]);
+	iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_1);
+	hmac = le32_to_cpu(fHdr->hmacDigest[2]);
+	iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_2);
+	hmac = le32_to_cpu(fHdr->hmacDigest[3]);
+	iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_3);
+	hmac = le32_to_cpu(fHdr->hmacDigest[4]);
+	iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_4);
+	typhoon_post_pci_writes(ioaddr);
+	iowrite32(TYPHOON_BOOTCMD_RUNTIME_IMAGE, ioaddr + TYPHOON_REG_COMMAND);
+
+	image_data += sizeof(struct typhoon_file_header);
+
+	/* The ioread32() in typhoon_wait_interrupt() will force the
+	 * last write to the command register to post, so
+	 * we don't need a typhoon_post_pci_writes() after it.
+	 */
+	for(i = 0; i < numSections; i++) {
+		sHdr = (struct typhoon_section_header *) image_data;
+		image_data += sizeof(struct typhoon_section_header);
+		load_addr = le32_to_cpu(sHdr->startAddr);
+		section_len = le32_to_cpu(sHdr->len);
+
+		while(section_len) {
+			len = min_t(u32, section_len, PAGE_SIZE);
+
+			if(typhoon_wait_interrupt(ioaddr) < 0 ||
+			   ioread32(ioaddr + TYPHOON_REG_STATUS) !=
+			   TYPHOON_STATUS_WAITING_FOR_SEGMENT) {
+				printk(KERN_ERR "%s: segment ready timeout\n",
+				       tp->name);
+				goto err_out_irq;
+			}
+
+			/* Do an pseudo IPv4 checksum on the data -- first
+			 * need to convert each u16 to cpu order before
+			 * summing. Fortunately, due to the properties of
+			 * the checksum, we can do this once, at the end.
+			 */
+			csum = csum_partial_copy_nocheck(image_data, dpage,
+							 len, 0);
+			csum = csum_fold(csum);
+			csum = le16_to_cpu(csum);
+
+			iowrite32(len, ioaddr + TYPHOON_REG_BOOT_LENGTH);
+			iowrite32(csum, ioaddr + TYPHOON_REG_BOOT_CHECKSUM);
+			iowrite32(load_addr,
+					ioaddr + TYPHOON_REG_BOOT_DEST_ADDR);
+			iowrite32(0, ioaddr + TYPHOON_REG_BOOT_DATA_HI);
+			iowrite32(dpage_dma, ioaddr + TYPHOON_REG_BOOT_DATA_LO);
+			typhoon_post_pci_writes(ioaddr);
+			iowrite32(TYPHOON_BOOTCMD_SEG_AVAILABLE,
+			       ioaddr + TYPHOON_REG_COMMAND);
+
+			image_data += len;
+			load_addr += len;
+			section_len -= len;
+		}
+	}
+
+	if(typhoon_wait_interrupt(ioaddr) < 0 ||
+	   ioread32(ioaddr + TYPHOON_REG_STATUS) !=
+	   TYPHOON_STATUS_WAITING_FOR_SEGMENT) {
+		printk(KERN_ERR "%s: final segment ready timeout\n", tp->name);
+		goto err_out_irq;
+	}
+
+	iowrite32(TYPHOON_BOOTCMD_DNLD_COMPLETE, ioaddr + TYPHOON_REG_COMMAND);
+
+	if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_BOOT) < 0) {
+		printk(KERN_ERR "%s: boot ready timeout, status 0x%0x\n",
+		       tp->name, ioread32(ioaddr + TYPHOON_REG_STATUS));
+		goto err_out_irq;
+	}
+
+	err = 0;
+
+err_out_irq:
+	iowrite32(irqMasked, ioaddr + TYPHOON_REG_INTR_MASK);
+	iowrite32(irqEnabled, ioaddr + TYPHOON_REG_INTR_ENABLE);
+
+	pci_free_consistent(pdev, PAGE_SIZE, dpage, dpage_dma);
+
+err_out:
+	return err;
+}
+
+static int
+typhoon_boot_3XP(struct typhoon *tp, u32 initial_status)
+{
+	void __iomem *ioaddr = tp->ioaddr;
+
+	if(typhoon_wait_status(ioaddr, initial_status) < 0) {
+		printk(KERN_ERR "%s: boot ready timeout\n", tp->name);
+		goto out_timeout;
+	}
+
+	iowrite32(0, ioaddr + TYPHOON_REG_BOOT_RECORD_ADDR_HI);
+	iowrite32(tp->shared_dma, ioaddr + TYPHOON_REG_BOOT_RECORD_ADDR_LO);
+	typhoon_post_pci_writes(ioaddr);
+	iowrite32(TYPHOON_BOOTCMD_REG_BOOT_RECORD,
+				ioaddr + TYPHOON_REG_COMMAND);
+
+	if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_RUNNING) < 0) {
+		printk(KERN_ERR "%s: boot finish timeout (status 0x%x)\n",
+		       tp->name, ioread32(ioaddr + TYPHOON_REG_STATUS));
+		goto out_timeout;
+	}
+
+	/* Clear the Transmit and Command ready registers
+	 */
+	iowrite32(0, ioaddr + TYPHOON_REG_TX_HI_READY);
+	iowrite32(0, ioaddr + TYPHOON_REG_CMD_READY);
+	iowrite32(0, ioaddr + TYPHOON_REG_TX_LO_READY);
+	typhoon_post_pci_writes(ioaddr);
+	iowrite32(TYPHOON_BOOTCMD_BOOT, ioaddr + TYPHOON_REG_COMMAND);
+
+	return 0;
+
+out_timeout:
+	return -ETIMEDOUT;
+}
+
+static u32
+typhoon_clean_tx(struct typhoon *tp, struct transmit_ring *txRing,
+			volatile u32 * index)
+{
+	u32 lastRead = txRing->lastRead;
+	struct tx_desc *tx;
+	dma_addr_t skb_dma;
+	int dma_len;
+	int type;
+
+	while(lastRead != le32_to_cpu(*index)) {
+		tx = (struct tx_desc *) (txRing->ringBase + lastRead);
+		type = tx->flags & TYPHOON_TYPE_MASK;
+
+		if(type == TYPHOON_TX_DESC) {
+			/* This tx_desc describes a packet.
+			 */
+			unsigned long ptr = tx->addr | ((u64)tx->addrHi << 32);
+			struct sk_buff *skb = (struct sk_buff *) ptr;
+			dev_kfree_skb_irq(skb);
+		} else if(type == TYPHOON_FRAG_DESC) {
+			/* This tx_desc describes a memory mapping. Free it.
+			 */
+			skb_dma = (dma_addr_t) le32_to_cpu(tx->addr);
+			dma_len = le16_to_cpu(tx->len);
+			pci_unmap_single(tp->pdev, skb_dma, dma_len,
+				       PCI_DMA_TODEVICE);
+		}
+
+		tx->flags = 0;
+		typhoon_inc_tx_index(&lastRead, 1);
+	}
+
+	return lastRead;
+}
+
+static void
+typhoon_tx_complete(struct typhoon *tp, struct transmit_ring *txRing,
+			volatile u32 * index)
+{
+	u32 lastRead;
+	int numDesc = MAX_SKB_FRAGS + 1;
+
+	/* This will need changing if we start to use the Hi Tx ring. */
+	lastRead = typhoon_clean_tx(tp, txRing, index);
+	if(netif_queue_stopped(tp->dev) && typhoon_num_free(txRing->lastWrite,
+				lastRead, TXLO_ENTRIES) > (numDesc + 2))
+		netif_wake_queue(tp->dev);
+
+	txRing->lastRead = lastRead;
+	smp_wmb();
+}
+
+static void
+typhoon_recycle_rx_skb(struct typhoon *tp, u32 idx)
+{
+	struct typhoon_indexes *indexes = tp->indexes;
+	struct rxbuff_ent *rxb = &tp->rxbuffers[idx];
+	struct basic_ring *ring = &tp->rxBuffRing;
+	struct rx_free *r;
+
+	if((ring->lastWrite + sizeof(*r)) % (RXFREE_ENTRIES * sizeof(*r)) ==
+				indexes->rxBuffCleared) {
+		/* no room in ring, just drop the skb
+		 */
+		dev_kfree_skb_any(rxb->skb);
+		rxb->skb = NULL;
+		return;
+	}
+
+	r = (struct rx_free *) (ring->ringBase + ring->lastWrite);
+	typhoon_inc_rxfree_index(&ring->lastWrite, 1);
+	r->virtAddr = idx;
+	r->physAddr = cpu_to_le32(rxb->dma_addr);
+
+	/* Tell the card about it */
+	wmb();
+	indexes->rxBuffReady = cpu_to_le32(ring->lastWrite);
+}
+
+static int
+typhoon_alloc_rx_skb(struct typhoon *tp, u32 idx)
+{
+	struct typhoon_indexes *indexes = tp->indexes;
+	struct rxbuff_ent *rxb = &tp->rxbuffers[idx];
+	struct basic_ring *ring = &tp->rxBuffRing;
+	struct rx_free *r;
+	struct sk_buff *skb;
+	dma_addr_t dma_addr;
+
+	rxb->skb = NULL;
+
+	if((ring->lastWrite + sizeof(*r)) % (RXFREE_ENTRIES * sizeof(*r)) ==
+				indexes->rxBuffCleared)
+		return -ENOMEM;
+
+	skb = dev_alloc_skb(PKT_BUF_SZ);
+	if(!skb)
+		return -ENOMEM;
+
+#if 0
+	/* Please, 3com, fix the firmware to allow DMA to a unaligned
+	 * address! Pretty please?
+	 */
+	skb_reserve(skb, 2);
+#endif
+
+	skb->dev = tp->dev;
+	dma_addr = pci_map_single(tp->pdev, skb->tail,
+				  PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
+
+	/* Since no card does 64 bit DAC, the high bits will never
+	 * change from zero.
+	 */
+	r = (struct rx_free *) (ring->ringBase + ring->lastWrite);
+	typhoon_inc_rxfree_index(&ring->lastWrite, 1);
+	r->virtAddr = idx;
+	r->physAddr = cpu_to_le32(dma_addr);
+	rxb->skb = skb;
+	rxb->dma_addr = dma_addr;
+
+	/* Tell the card about it */
+	wmb();
+	indexes->rxBuffReady = cpu_to_le32(ring->lastWrite);
+	return 0;
+}
+
+static int
+typhoon_rx(struct typhoon *tp, struct basic_ring *rxRing, volatile u32 * ready,
+	   volatile u32 * cleared, int budget)
+{
+	struct rx_desc *rx;
+	struct sk_buff *skb, *new_skb;
+	struct rxbuff_ent *rxb;
+	dma_addr_t dma_addr;
+	u32 local_ready;
+	u32 rxaddr;
+	int pkt_len;
+	u32 idx;
+	u32 csum_bits;
+	int received;
+
+	received = 0;
+	local_ready = le32_to_cpu(*ready);
+	rxaddr = le32_to_cpu(*cleared);
+	while(rxaddr != local_ready && budget > 0) {
+		rx = (struct rx_desc *) (rxRing->ringBase + rxaddr);
+		idx = rx->addr;
+		rxb = &tp->rxbuffers[idx];
+		skb = rxb->skb;
+		dma_addr = rxb->dma_addr;
+
+		typhoon_inc_rx_index(&rxaddr, 1);
+
+		if(rx->flags & TYPHOON_RX_ERROR) {
+			typhoon_recycle_rx_skb(tp, idx);
+			continue;
+		}
+
+		pkt_len = le16_to_cpu(rx->frameLen);
+
+		if(pkt_len < rx_copybreak &&
+		   (new_skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
+			new_skb->dev = tp->dev;
+			skb_reserve(new_skb, 2);
+			pci_dma_sync_single_for_cpu(tp->pdev, dma_addr,
+						    PKT_BUF_SZ,
+						    PCI_DMA_FROMDEVICE);
+			eth_copy_and_sum(new_skb, skb->tail, pkt_len, 0);
+			pci_dma_sync_single_for_device(tp->pdev, dma_addr,
+						       PKT_BUF_SZ,
+						       PCI_DMA_FROMDEVICE);
+			skb_put(new_skb, pkt_len);
+			typhoon_recycle_rx_skb(tp, idx);
+		} else {
+			new_skb = skb;
+			skb_put(new_skb, pkt_len);
+			pci_unmap_single(tp->pdev, dma_addr, PKT_BUF_SZ,
+				       PCI_DMA_FROMDEVICE);
+			typhoon_alloc_rx_skb(tp, idx);
+		}
+		new_skb->protocol = eth_type_trans(new_skb, tp->dev);
+		csum_bits = rx->rxStatus & (TYPHOON_RX_IP_CHK_GOOD |
+			TYPHOON_RX_UDP_CHK_GOOD | TYPHOON_RX_TCP_CHK_GOOD);
+		if(csum_bits ==
+		   (TYPHOON_RX_IP_CHK_GOOD | TYPHOON_RX_TCP_CHK_GOOD)
+		   || csum_bits ==
+		   (TYPHOON_RX_IP_CHK_GOOD | TYPHOON_RX_UDP_CHK_GOOD)) {
+			new_skb->ip_summed = CHECKSUM_UNNECESSARY;
+		} else
+			new_skb->ip_summed = CHECKSUM_NONE;
+
+		spin_lock(&tp->state_lock);
+		if(tp->vlgrp != NULL && rx->rxStatus & TYPHOON_RX_VLAN)
+			vlan_hwaccel_receive_skb(new_skb, tp->vlgrp,
+						 ntohl(rx->vlanTag) & 0xffff);
+		else
+			netif_receive_skb(new_skb);
+		spin_unlock(&tp->state_lock);
+
+		tp->dev->last_rx = jiffies;
+		received++;
+		budget--;
+	}
+	*cleared = cpu_to_le32(rxaddr);
+
+	return received;
+}
+
+static void
+typhoon_fill_free_ring(struct typhoon *tp)
+{
+	u32 i;
+
+	for(i = 0; i < RXENT_ENTRIES; i++) {
+		struct rxbuff_ent *rxb = &tp->rxbuffers[i];
+		if(rxb->skb)
+			continue;
+		if(typhoon_alloc_rx_skb(tp, i) < 0)
+			break;
+	}
+}
+
+static int
+typhoon_poll(struct net_device *dev, int *total_budget)
+{
+	struct typhoon *tp = netdev_priv(dev);
+	struct typhoon_indexes *indexes = tp->indexes;
+	int orig_budget = *total_budget;
+	int budget, work_done, done;
+
+	rmb();
+	if(!tp->awaiting_resp && indexes->respReady != indexes->respCleared)
+			typhoon_process_response(tp, 0, NULL);
+
+	if(le32_to_cpu(indexes->txLoCleared) != tp->txLoRing.lastRead)
+		typhoon_tx_complete(tp, &tp->txLoRing, &indexes->txLoCleared);
+
+	if(orig_budget > dev->quota)
+		orig_budget = dev->quota;
+
+	budget = orig_budget;
+	work_done = 0;
+	done = 1;
+
+	if(indexes->rxHiCleared != indexes->rxHiReady) {
+		work_done = typhoon_rx(tp, &tp->rxHiRing, &indexes->rxHiReady,
+			   		&indexes->rxHiCleared, budget);
+		budget -= work_done;
+	}
+
+	if(indexes->rxLoCleared != indexes->rxLoReady) {
+		work_done += typhoon_rx(tp, &tp->rxLoRing, &indexes->rxLoReady,
+			   		&indexes->rxLoCleared, budget);
+	}
+
+	if(work_done) {
+		*total_budget -= work_done;
+		dev->quota -= work_done;
+
+		if(work_done >= orig_budget)
+			done = 0;
+	}
+
+	if(le32_to_cpu(indexes->rxBuffCleared) == tp->rxBuffRing.lastWrite) {
+		/* rxBuff ring is empty, try to fill it. */
+		typhoon_fill_free_ring(tp);
+	}
+
+	if(done) {
+		netif_rx_complete(dev);
+		iowrite32(TYPHOON_INTR_NONE,
+				tp->ioaddr + TYPHOON_REG_INTR_MASK);
+		typhoon_post_pci_writes(tp->ioaddr);
+	}
+
+	return (done ? 0 : 1);
+}
+
+static irqreturn_t
+typhoon_interrupt(int irq, void *dev_instance, struct pt_regs *rgs)
+{
+	struct net_device *dev = (struct net_device *) dev_instance;
+	struct typhoon *tp = dev->priv;
+	void __iomem *ioaddr = tp->ioaddr;
+	u32 intr_status;
+
+	intr_status = ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
+	if(!(intr_status & TYPHOON_INTR_HOST_INT))
+		return IRQ_NONE;
+
+	iowrite32(intr_status, ioaddr + TYPHOON_REG_INTR_STATUS);
+
+	if(netif_rx_schedule_prep(dev)) {
+		iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
+		typhoon_post_pci_writes(ioaddr);
+		__netif_rx_schedule(dev);
+	} else {
+		printk(KERN_ERR "%s: Error, poll already scheduled\n",
+                       dev->name);
+	}
+	return IRQ_HANDLED;
+}
+
+static void
+typhoon_free_rx_rings(struct typhoon *tp)
+{
+	u32 i;
+
+	for(i = 0; i < RXENT_ENTRIES; i++) {
+		struct rxbuff_ent *rxb = &tp->rxbuffers[i];
+		if(rxb->skb) {
+			pci_unmap_single(tp->pdev, rxb->dma_addr, PKT_BUF_SZ,
+				       PCI_DMA_FROMDEVICE);
+			dev_kfree_skb(rxb->skb);
+			rxb->skb = NULL;
+		}
+	}
+}
+
+static int
+typhoon_sleep(struct typhoon *tp, pci_power_t state, u16 events)
+{
+	struct pci_dev *pdev = tp->pdev;
+	void __iomem *ioaddr = tp->ioaddr;
+	struct cmd_desc xp_cmd;
+	int err;
+
+	INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_ENABLE_WAKE_EVENTS);
+	xp_cmd.parm1 = events;
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	if(err < 0) {
+		printk(KERN_ERR "%s: typhoon_sleep(): wake events cmd err %d\n",
+				tp->name, err);
+		return err;
+	}
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_GOTO_SLEEP);
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	if(err < 0) {
+		printk(KERN_ERR "%s: typhoon_sleep(): sleep cmd err %d\n",
+				tp->name, err);
+		return err;
+	}
+
+	if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_SLEEPING) < 0)
+		return -ETIMEDOUT;
+
+	/* Since we cannot monitor the status of the link while sleeping,
+	 * tell the world it went away.
+	 */
+	netif_carrier_off(tp->dev);
+
+	pci_enable_wake(tp->pdev, state, 1);
+	pci_disable_device(pdev);
+	return pci_set_power_state(pdev, pci_choose_state(pdev, state));
+}
+
+static int
+typhoon_wakeup(struct typhoon *tp, int wait_type)
+{
+	struct pci_dev *pdev = tp->pdev;
+	void __iomem *ioaddr = tp->ioaddr;
+
+	pci_set_power_state(pdev, PCI_D0);
+	pci_restore_state(pdev);
+
+	/* Post 2.x.x versions of the Sleep Image require a reset before
+	 * we can download the Runtime Image. But let's not make users of
+	 * the old firmware pay for the reset.
+	 */
+	iowrite32(TYPHOON_BOOTCMD_WAKEUP, ioaddr + TYPHOON_REG_COMMAND);
+	if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_HOST) < 0 ||
+			(tp->capabilities & TYPHOON_WAKEUP_NEEDS_RESET))
+		return typhoon_reset(ioaddr, wait_type);
+
+	return 0;
+}
+
+static int
+typhoon_start_runtime(struct typhoon *tp)
+{
+	struct net_device *dev = tp->dev;
+	void __iomem *ioaddr = tp->ioaddr;
+	struct cmd_desc xp_cmd;
+	int err;
+
+	typhoon_init_rings(tp);
+	typhoon_fill_free_ring(tp);
+
+	err = typhoon_download_firmware(tp);
+	if(err < 0) {
+		printk("%s: cannot load runtime on 3XP\n", tp->name);
+		goto error_out;
+	}
+
+	if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_BOOT) < 0) {
+		printk("%s: cannot boot 3XP\n", tp->name);
+		err = -EIO;
+		goto error_out;
+	}
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAX_PKT_SIZE);
+	xp_cmd.parm1 = cpu_to_le16(PKT_BUF_SZ);
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	if(err < 0)
+		goto error_out;
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAC_ADDRESS);
+	xp_cmd.parm1 = cpu_to_le16(ntohs(*(u16 *)&dev->dev_addr[0]));
+	xp_cmd.parm2 = cpu_to_le32(ntohl(*(u32 *)&dev->dev_addr[2]));
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	if(err < 0)
+		goto error_out;
+
+	/* Disable IRQ coalescing -- we can reenable it when 3Com gives
+	 * us some more information on how to control it.
+	 */
+	INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_IRQ_COALESCE_CTRL);
+	xp_cmd.parm1 = 0;
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	if(err < 0)
+		goto error_out;
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_XCVR_SELECT);
+	xp_cmd.parm1 = tp->xcvr_select;
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	if(err < 0)
+		goto error_out;
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_VLAN_TYPE_WRITE);
+	xp_cmd.parm1 = __constant_cpu_to_le16(ETH_P_8021Q);
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	if(err < 0)
+		goto error_out;
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_OFFLOAD_TASKS);
+	spin_lock_bh(&tp->state_lock);
+	xp_cmd.parm2 = tp->offload;
+	xp_cmd.parm3 = tp->offload;
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	spin_unlock_bh(&tp->state_lock);
+	if(err < 0)
+		goto error_out;
+
+	typhoon_set_rx_mode(dev);
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_TX_ENABLE);
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	if(err < 0)
+		goto error_out;
+
+	INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_RX_ENABLE);
+	err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+	if(err < 0)
+		goto error_out;
+
+	tp->card_state = Running;
+	smp_wmb();
+
+	iowrite32(TYPHOON_INTR_ENABLE_ALL, ioaddr + TYPHOON_REG_INTR_ENABLE);
+	iowrite32(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_MASK);
+	typhoon_post_pci_writes(ioaddr);
+
+	return 0;
+
+error_out:
+	typhoon_reset(ioaddr, WaitNoSleep);
+	typhoon_free_rx_rings(tp);
+	typhoon_init_rings(tp);
+	return err;
+}
+
+static int
+typhoon_stop_runtime(struct typhoon *tp, int wait_type)
+{
+	struct typhoon_indexes *indexes = tp->indexes;
+	struct transmit_ring *txLo = &tp->txLoRing;
+	void __iomem *ioaddr = tp->ioaddr;
+	struct cmd_desc xp_cmd;
+	int i;
+
+	/* Disable interrupts early, since we can't schedule a poll
+	 * when called with !netif_running(). This will be posted
+	 * when we force the posting of the command.
+	 */
+	iowrite32(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_ENABLE);
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_RX_DISABLE);
+	typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+
+	/* Wait 1/2 sec for any outstanding transmits to occur
+	 * We'll cleanup after the reset if this times out.
+	 */
+	for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
+		if(indexes->txLoCleared == cpu_to_le32(txLo->lastWrite))
+			break;
+		udelay(TYPHOON_UDELAY);
+	}
+
+	if(i == TYPHOON_WAIT_TIMEOUT)
+		printk(KERN_ERR
+		       "%s: halt timed out waiting for Tx to complete\n",
+		       tp->name);
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_TX_DISABLE);
+	typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+
+	/* save the statistics so when we bring the interface up again,
+	 * the values reported to userspace are correct.
+	 */
+	tp->card_state = Sleeping;
+	smp_wmb();
+	typhoon_do_get_stats(tp);
+	memcpy(&tp->stats_saved, &tp->stats, sizeof(struct net_device_stats));
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_HALT);
+	typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
+
+	if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_HALTED) < 0)
+		printk(KERN_ERR "%s: timed out waiting for 3XP to halt\n",
+		       tp->name);
+
+	if(typhoon_reset(ioaddr, wait_type) < 0) {
+		printk(KERN_ERR "%s: unable to reset 3XP\n", tp->name);
+		return -ETIMEDOUT;
+	}
+
+	/* cleanup any outstanding Tx packets */
+	if(indexes->txLoCleared != cpu_to_le32(txLo->lastWrite)) {
+		indexes->txLoCleared = cpu_to_le32(txLo->lastWrite);
+		typhoon_clean_tx(tp, &tp->txLoRing, &indexes->txLoCleared);
+	}
+
+	return 0;
+}
+
+static void
+typhoon_tx_timeout(struct net_device *dev)
+{
+	struct typhoon *tp = netdev_priv(dev);
+
+	if(typhoon_reset(tp->ioaddr, WaitNoSleep) < 0) {
+		printk(KERN_WARNING "%s: could not reset in tx timeout\n",
+					dev->name);
+		goto truely_dead;
+	}
+
+	/* If we ever start using the Hi ring, it will need cleaning too */
+	typhoon_clean_tx(tp, &tp->txLoRing, &tp->indexes->txLoCleared);
+	typhoon_free_rx_rings(tp);
+
+	if(typhoon_start_runtime(tp) < 0) {
+		printk(KERN_ERR "%s: could not start runtime in tx timeout\n",
+					dev->name);
+		goto truely_dead;
+        }
+
+	netif_wake_queue(dev);
+	return;
+
+truely_dead:
+	/* Reset the hardware, and turn off carrier to avoid more timeouts */
+	typhoon_reset(tp->ioaddr, NoWait);
+	netif_carrier_off(dev);
+}
+
+static int
+typhoon_open(struct net_device *dev)
+{
+	struct typhoon *tp = netdev_priv(dev);
+	int err;
+
+	err = typhoon_wakeup(tp, WaitSleep);
+	if(err < 0) {
+		printk(KERN_ERR "%s: unable to wakeup device\n", dev->name);
+		goto out_sleep;
+	}
+
+	err = request_irq(dev->irq, &typhoon_interrupt, SA_SHIRQ,
+				dev->name, dev);
+	if(err < 0)
+		goto out_sleep;
+
+	err = typhoon_start_runtime(tp);
+	if(err < 0)
+		goto out_irq;
+
+	netif_start_queue(dev);
+	return 0;
+
+out_irq:
+	free_irq(dev->irq, dev);
+
+out_sleep:
+	if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
+		printk(KERN_ERR "%s: unable to reboot into sleep img\n",
+				dev->name);
+		typhoon_reset(tp->ioaddr, NoWait);
+		goto out;
+	}
+
+	if(typhoon_sleep(tp, PCI_D3hot, 0) < 0) 
+		printk(KERN_ERR "%s: unable to go back to sleep\n", dev->name);
+
+out:
+	return err;
+}
+
+static int
+typhoon_close(struct net_device *dev)
+{
+	struct typhoon *tp = netdev_priv(dev);
+
+	netif_stop_queue(dev);
+
+	if(typhoon_stop_runtime(tp, WaitSleep) < 0)
+		printk(KERN_ERR "%s: unable to stop runtime\n", dev->name);
+
+	/* Make sure there is no irq handler running on a different CPU. */
+	typhoon_synchronize_irq(dev->irq);
+	free_irq(dev->irq, dev);
+
+	typhoon_free_rx_rings(tp);
+	typhoon_init_rings(tp);
+
+	if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0)
+		printk(KERN_ERR "%s: unable to boot sleep image\n", dev->name);
+
+	if(typhoon_sleep(tp, PCI_D3hot, 0) < 0)
+		printk(KERN_ERR "%s: unable to put card to sleep\n", dev->name);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int
+typhoon_resume(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct typhoon *tp = netdev_priv(dev);
+
+	/* If we're down, resume when we are upped.
+	 */
+	if(!netif_running(dev))
+		return 0;
+
+	if(typhoon_wakeup(tp, WaitNoSleep) < 0) {
+		printk(KERN_ERR "%s: critical: could not wake up in resume\n",
+				dev->name);
+		goto reset;
+	}
+
+	if(typhoon_start_runtime(tp) < 0) {
+		printk(KERN_ERR "%s: critical: could not start runtime in "
+				"resume\n", dev->name);
+		goto reset;
+	}
+
+	netif_device_attach(dev);
+	netif_start_queue(dev);
+	return 0;
+
+reset:
+	typhoon_reset(tp->ioaddr, NoWait);
+	return -EBUSY;
+}
+
+static int
+typhoon_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct typhoon *tp = netdev_priv(dev);
+	struct cmd_desc xp_cmd;
+
+	/* If we're down, we're already suspended.
+	 */
+	if(!netif_running(dev))
+		return 0;
+
+	spin_lock_bh(&tp->state_lock);
+	if(tp->vlgrp && tp->wol_events & TYPHOON_WAKE_MAGIC_PKT) {
+		spin_unlock_bh(&tp->state_lock);
+		printk(KERN_ERR "%s: cannot do WAKE_MAGIC with VLANS\n",
+				dev->name);
+		return -EBUSY;
+	}
+	spin_unlock_bh(&tp->state_lock);
+
+	netif_device_detach(dev);
+
+	if(typhoon_stop_runtime(tp, WaitNoSleep) < 0) {
+		printk(KERN_ERR "%s: unable to stop runtime\n", dev->name);
+		goto need_resume;
+	}
+
+	typhoon_free_rx_rings(tp);
+	typhoon_init_rings(tp);
+
+	if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
+		printk(KERN_ERR "%s: unable to boot sleep image\n", dev->name);
+		goto need_resume;
+	}
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAC_ADDRESS);
+	xp_cmd.parm1 = cpu_to_le16(ntohs(*(u16 *)&dev->dev_addr[0]));
+	xp_cmd.parm2 = cpu_to_le32(ntohl(*(u32 *)&dev->dev_addr[2]));
+	if(typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL) < 0) {
+		printk(KERN_ERR "%s: unable to set mac address in suspend\n",
+				dev->name);
+		goto need_resume;
+	}
+
+	INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_RX_FILTER);
+	xp_cmd.parm1 = TYPHOON_RX_FILTER_DIRECTED | TYPHOON_RX_FILTER_BROADCAST;
+	if(typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL) < 0) {
+		printk(KERN_ERR "%s: unable to set rx filter in suspend\n",
+				dev->name);
+		goto need_resume;
+	}
+
+	if(typhoon_sleep(tp, state, tp->wol_events) < 0) {
+		printk(KERN_ERR "%s: unable to put card to sleep\n", dev->name);
+		goto need_resume;
+	}
+
+	return 0;
+
+need_resume:
+	typhoon_resume(pdev);
+	return -EBUSY;
+}
+
+static int
+typhoon_enable_wake(struct pci_dev *pdev, u32 state, int enable)
+{
+	return pci_enable_wake(pdev, state, enable);
+}
+#endif
+
+static int __devinit
+typhoon_test_mmio(struct pci_dev *pdev)
+{
+	void __iomem *ioaddr = pci_iomap(pdev, 1, 128);
+	int mode = 0;
+	u32 val;
+
+	if(!ioaddr)
+		goto out;
+
+	if(ioread32(ioaddr + TYPHOON_REG_STATUS) !=
+				TYPHOON_STATUS_WAITING_FOR_HOST)
+		goto out_unmap;
+
+	iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
+	iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
+	iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_ENABLE);
+
+	/* Ok, see if we can change our interrupt status register by
+	 * sending ourselves an interrupt. If so, then MMIO works.
+	 * The 50usec delay is arbitrary -- it could probably be smaller.
+	 */
+	val = ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
+	if((val & TYPHOON_INTR_SELF) == 0) {
+		iowrite32(1, ioaddr + TYPHOON_REG_SELF_INTERRUPT);
+		ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
+		udelay(50);
+		val = ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
+		if(val & TYPHOON_INTR_SELF)
+			mode = 1;
+	}
+
+	iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
+	iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
+	iowrite32(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_ENABLE);
+	ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
+
+out_unmap:
+	pci_iounmap(pdev, ioaddr);
+
+out:
+	if(!mode)
+		printk(KERN_INFO PFX "falling back to port IO\n");
+	return mode;
+}
+
+static int __devinit
+typhoon_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	static int did_version = 0;
+	struct net_device *dev;
+	struct typhoon *tp;
+	int card_id = (int) ent->driver_data;
+	void __iomem *ioaddr;
+	void *shared;
+	dma_addr_t shared_dma;
+	struct cmd_desc xp_cmd;
+	struct resp_desc xp_resp[3];
+	int i;
+	int err = 0;
+
+	if(!did_version++)
+		printk(KERN_INFO "%s", version);
+
+	dev = alloc_etherdev(sizeof(*tp));
+	if(dev == NULL) {
+		printk(ERR_PFX "%s: unable to alloc new net device\n",
+		       pci_name(pdev));
+		err = -ENOMEM;
+		goto error_out;
+	}
+	SET_MODULE_OWNER(dev);
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+	err = pci_enable_device(pdev);
+	if(err < 0) {
+		printk(ERR_PFX "%s: unable to enable device\n",
+		       pci_name(pdev));
+		goto error_out_dev;
+	}
+
+	err = pci_set_mwi(pdev);
+	if(err < 0) {
+		printk(ERR_PFX "%s: unable to set MWI\n", pci_name(pdev));
+		goto error_out_disable;
+	}
+
+	err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+	if(err < 0) {
+		printk(ERR_PFX "%s: No usable DMA configuration\n",
+		       pci_name(pdev));
+		goto error_out_mwi;
+	}
+
+	/* sanity checks on IO and MMIO BARs
+	 */
+	if(!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
+		printk(ERR_PFX
+		       "%s: region #1 not a PCI IO resource, aborting\n",
+		       pci_name(pdev));
+		err = -ENODEV;
+		goto error_out_mwi;
+	}
+	if(pci_resource_len(pdev, 0) < 128) {
+		printk(ERR_PFX "%s: Invalid PCI IO region size, aborting\n",
+		       pci_name(pdev));
+		err = -ENODEV;
+		goto error_out_mwi;
+	}
+	if(!(pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
+		printk(ERR_PFX
+		       "%s: region #1 not a PCI MMIO resource, aborting\n",
+		       pci_name(pdev));
+		err = -ENODEV;
+		goto error_out_mwi;
+	}
+	if(pci_resource_len(pdev, 1) < 128) {
+		printk(ERR_PFX "%s: Invalid PCI MMIO region size, aborting\n",
+		       pci_name(pdev));
+		err = -ENODEV;
+		goto error_out_mwi;
+	}
+
+	err = pci_request_regions(pdev, "typhoon");
+	if(err < 0) {
+		printk(ERR_PFX "%s: could not request regions\n",
+		       pci_name(pdev));
+		goto error_out_mwi;
+	}
+
+	/* map our registers
+	 */
+	if(use_mmio != 0 && use_mmio != 1)
+		use_mmio = typhoon_test_mmio(pdev);
+
+	ioaddr = pci_iomap(pdev, use_mmio, 128);
+	if (!ioaddr) {
+		printk(ERR_PFX "%s: cannot remap registers, aborting\n",
+		       pci_name(pdev));
+		err = -EIO;
+		goto error_out_regions;
+	}
+
+	/* allocate pci dma space for rx and tx descriptor rings
+	 */
+	shared = pci_alloc_consistent(pdev, sizeof(struct typhoon_shared),
+				      &shared_dma);
+	if(!shared) {
+		printk(ERR_PFX "%s: could not allocate DMA memory\n",
+		       pci_name(pdev));
+		err = -ENOMEM;
+		goto error_out_remap;
+	}
+
+	dev->irq = pdev->irq;
+	tp = netdev_priv(dev);
+	tp->shared = (struct typhoon_shared *) shared;
+	tp->shared_dma = shared_dma;
+	tp->pdev = pdev;
+	tp->tx_pdev = pdev;
+	tp->ioaddr = ioaddr;
+	tp->tx_ioaddr = ioaddr;
+	tp->dev = dev;
+
+	/* Init sequence:
+	 * 1) Reset the adapter to clear any bad juju
+	 * 2) Reload the sleep image
+	 * 3) Boot the sleep image
+	 * 4) Get the hardware address.
+	 * 5) Put the card to sleep.
+	 */
+	if (typhoon_reset(ioaddr, WaitSleep) < 0) {
+		printk(ERR_PFX "%s: could not reset 3XP\n", pci_name(pdev));
+		err = -EIO;
+		goto error_out_dma;
+	}
+
+	/* Now that we've reset the 3XP and are sure it's not going to
+	 * write all over memory, enable bus mastering, and save our
+	 * state for resuming after a suspend.
+	 */
+	pci_set_master(pdev);
+	pci_save_state(pdev);
+
+	/* dev->name is not valid until we register, but we need to
+	 * use some common routines to initialize the card. So that those
+	 * routines print the right name, we keep our oun pointer to the name
+	 */
+	tp->name = pci_name(pdev);
+
+	typhoon_init_interface(tp);
+	typhoon_init_rings(tp);
+
+	if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
+		printk(ERR_PFX "%s: cannot boot 3XP sleep image\n",
+		       pci_name(pdev));
+		err = -EIO;
+		goto error_out_reset;
+	}
+
+	INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_MAC_ADDRESS);
+	if(typhoon_issue_command(tp, 1, &xp_cmd, 1, xp_resp) < 0) {
+		printk(ERR_PFX "%s: cannot read MAC address\n",
+		       pci_name(pdev));
+		err = -EIO;
+		goto error_out_reset;
+	}
+
+	*(u16 *)&dev->dev_addr[0] = htons(le16_to_cpu(xp_resp[0].parm1));
+	*(u32 *)&dev->dev_addr[2] = htonl(le32_to_cpu(xp_resp[0].parm2));
+
+	if(!is_valid_ether_addr(dev->dev_addr)) {
+		printk(ERR_PFX "%s: Could not obtain valid ethernet address, "
+		       "aborting\n", pci_name(pdev));
+		goto error_out_reset;
+	}
+
+	/* Read the Sleep Image version last, so the response is valid
+	 * later when we print out the version reported.
+	 */
+	INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_VERSIONS);
+	if(typhoon_issue_command(tp, 1, &xp_cmd, 3, xp_resp) < 0) {
+		printk(ERR_PFX "%s: Could not get Sleep Image version\n",
+			pci_name(pdev));
+		goto error_out_reset;
+	}
+
+	tp->capabilities = typhoon_card_info[card_id].capabilities;
+	tp->xcvr_select = TYPHOON_XCVR_AUTONEG;
+
+	/* Typhoon 1.0 Sleep Images return one response descriptor to the
+	 * READ_VERSIONS command. Those versions are OK after waking up
+	 * from sleep without needing a reset. Typhoon 1.1+ Sleep Images
+	 * seem to need a little extra help to get started. Since we don't
+	 * know how to nudge it along, just kick it.
+	 */
+	if(xp_resp[0].numDesc != 0)
+		tp->capabilities |= TYPHOON_WAKEUP_NEEDS_RESET;
+
+	if(typhoon_sleep(tp, PCI_D3hot, 0) < 0) {
+		printk(ERR_PFX "%s: cannot put adapter to sleep\n",
+		       pci_name(pdev));
+		err = -EIO;
+		goto error_out_reset;
+	}
+
+	/* The chip-specific entries in the device structure. */
+	dev->open		= typhoon_open;
+	dev->hard_start_xmit	= typhoon_start_tx;
+	dev->stop		= typhoon_close;
+	dev->set_multicast_list	= typhoon_set_rx_mode;
+	dev->tx_timeout		= typhoon_tx_timeout;
+	dev->poll		= typhoon_poll;
+	dev->weight		= 16;
+	dev->watchdog_timeo	= TX_TIMEOUT;
+	dev->get_stats		= typhoon_get_stats;
+	dev->set_mac_address	= typhoon_set_mac_address;
+	dev->vlan_rx_register	= typhoon_vlan_rx_register;
+	dev->vlan_rx_kill_vid	= typhoon_vlan_rx_kill_vid;
+	SET_ETHTOOL_OPS(dev, &typhoon_ethtool_ops);
+
+	/* We can handle scatter gather, up to 16 entries, and
+	 * we can do IP checksumming (only version 4, doh...)
+	 */
+	dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
+	dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+	dev->features |= NETIF_F_TSO;
+
+	if(register_netdev(dev) < 0)
+		goto error_out_reset;
+
+	/* fixup our local name */
+	tp->name = dev->name;
+
+	pci_set_drvdata(pdev, dev);
+
+	printk(KERN_INFO "%s: %s at %s 0x%lx, ",
+	       dev->name, typhoon_card_info[card_id].name,
+	       use_mmio ? "MMIO" : "IO", pci_resource_start(pdev, use_mmio));
+	for(i = 0; i < 5; i++)
+		printk("%2.2x:", dev->dev_addr[i]);
+	printk("%2.2x\n", dev->dev_addr[i]);
+
+	/* xp_resp still contains the response to the READ_VERSIONS command.
+	 * For debugging, let the user know what version he has.
+	 */
+	if(xp_resp[0].numDesc == 0) {
+		/* This is the Typhoon 1.0 type Sleep Image, last 16 bits
+		 * of version is Month/Day of build.
+		 */
+		u16 monthday = le32_to_cpu(xp_resp[0].parm2) & 0xffff;
+		printk(KERN_INFO "%s: Typhoon 1.0 Sleep Image built "
+			"%02u/%02u/2000\n", dev->name, monthday >> 8,
+			monthday & 0xff);
+	} else if(xp_resp[0].numDesc == 2) {
+		/* This is the Typhoon 1.1+ type Sleep Image
+		 */
+		u32 sleep_ver = le32_to_cpu(xp_resp[0].parm2);
+		u8 *ver_string = (u8 *) &xp_resp[1];
+		ver_string[25] = 0;
+		printk(KERN_INFO "%s: Typhoon 1.1+ Sleep Image version "
+			"%02x.%03x.%03x %s\n", dev->name, sleep_ver >> 24,
+			(sleep_ver >> 12) & 0xfff, sleep_ver & 0xfff,
+			ver_string);
+	} else {
+		printk(KERN_WARNING "%s: Unknown Sleep Image version "
+			"(%u:%04x)\n", dev->name, xp_resp[0].numDesc,
+			le32_to_cpu(xp_resp[0].parm2));
+	}
+		
+	return 0;
+
+error_out_reset:
+	typhoon_reset(ioaddr, NoWait);
+
+error_out_dma:
+	pci_free_consistent(pdev, sizeof(struct typhoon_shared),
+			    shared, shared_dma);
+error_out_remap:
+	pci_iounmap(pdev, ioaddr);
+error_out_regions:
+	pci_release_regions(pdev);
+error_out_mwi:
+	pci_clear_mwi(pdev);
+error_out_disable:
+	pci_disable_device(pdev);
+error_out_dev:
+	free_netdev(dev);
+error_out:
+	return err;
+}
+
+static void __devexit
+typhoon_remove_one(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct typhoon *tp = netdev_priv(dev);
+
+	unregister_netdev(dev);
+	pci_set_power_state(pdev, PCI_D0);
+	pci_restore_state(pdev);
+	typhoon_reset(tp->ioaddr, NoWait);
+	pci_iounmap(pdev, tp->ioaddr);
+	pci_free_consistent(pdev, sizeof(struct typhoon_shared),
+			    tp->shared, tp->shared_dma);
+	pci_release_regions(pdev);
+	pci_clear_mwi(pdev);
+	pci_disable_device(pdev);
+	pci_set_drvdata(pdev, NULL);
+	free_netdev(dev);
+}
+
+static struct pci_driver typhoon_driver = {
+	.name		= DRV_MODULE_NAME,
+	.id_table	= typhoon_pci_tbl,
+	.probe		= typhoon_init_one,
+	.remove		= __devexit_p(typhoon_remove_one),
+#ifdef CONFIG_PM
+	.suspend	= typhoon_suspend,
+	.resume		= typhoon_resume,
+	.enable_wake	= typhoon_enable_wake,
+#endif
+};
+
+static int __init
+typhoon_init(void)
+{
+	return pci_module_init(&typhoon_driver);
+}
+
+static void __exit
+typhoon_cleanup(void)
+{
+	pci_unregister_driver(&typhoon_driver);
+}
+
+module_init(typhoon_init);
+module_exit(typhoon_cleanup);