2006-01-22 Thomas Schwinge <tschwinge@gnu.org>

* configure, i386/configure, i386/linux/configure, linux/configure,
	i386/linux/device-drivers.h.in: Regenerated.

	* linux/src/drivers/net/ne2k-pci.c: Resolve conflicts.

2006-01-22  Guillem Jover  <guillem@hadrons.org>

	* i386/linux/configure.ac: Renamed winbond-840 driver to winbond_840.
	Enable the starfire, intel_gige and natsemi network drivers.  Remove
	"CONFIG_" from cb_chim, starfire, sundance, winbond840, hamachi,
	natsemi, myson803 and ns820 driver declarations.  Replace INTER_GIGE
	with INTEL_GIGE.
	* linux/dev/drivers/net/Space.c: Add conditional probes for natsemi,
	ns820, winbond840, hamachi, sundance, starfire, myson803 and intel-gige
	drivers.

	* linux/src/include/asm-i386/cache.h: New file from linux 2.2.26.
	* linux/dev/include/linux/malloc.h: Include <asm/cache.h>.

	* linux/src/drivers/net/ns820.c (netsami_drv_id): Renamed to ...
	(ns820_drv_id): ... this.  Fix all callers.
	* linux/src/drivers/net/intel-gige.c
	(skel_netdev_probe): Renamed to ...
	(igige_probe): ... this.
	* linux/dev/drivers/net/eepro100.c: Remove obsoleted file.
	* linux/src/drivers/net/eepro100.c (pci_id_tbl): Add PCI ID's from
	linux-2.6.14-rc4.

2006-01-22  Alfred M. Szmidt  <ams@gnu.org>

	* i386/linux/configure.ac: Added `pci-scan.o' to the network driver
	class.  (ns820, myson803, sundance, winbond-840, hamachi): New drivers.
	* i386/linux/Makefile.in (linux-net-files): Added `cb_shim.c',
	`hamachi.c', `intel-gige.c', `myson803.c', `natsemi.c', `ns820.c',
	`starfire.c', `sundance.c', `winbond-840.c' and `pci-scan.c'.

	* linux/dev/include/linux/modversions.h: New file.

	* linux/src/drivers/net/cb_shim.c, linux/src/drivers/net/hamachi.c,
	linux/src/drivers/net/intel-gige.c, linux/src/drivers/net/myson803.c,
	linux/src/drivers/net/natsemi.c, linux/src/drivers/net/ns820.c,
	linux/src/drivers/net/starfire.c, linux/src/drivers/net/sundance.c,
	linux/src/drivers/net/winbond-840.c,
	linux/src/drivers/net/kern_compat.h, linux/src/drivers/net/pci-scan.c,
	linux/src/drivers/net/pci-scan.h: New files from netdrivers 3.5 package
	(http://www.scyld.com/network).

	* linux/src/drivers/net/3c59x.c, linux/src/drivers/net/eepro100.c,
	linux/src/drivers/net/epic100.c, linux/src/drivers/net/ne2k-pci.c,
	linux/src/drivers/net/rtl8139.c, linux/src/drivers/net/tulip.c,
	linux/src/drivers/net/via-rhine.c, linux/src/drivers/net/yellowfin.c:
	Updated files from netdrivers 3.5 (http://www.scyld.com/network).

1 files changed, 1450 insertions, 0 deletions

diff --git a/linux/src/drivers/net/intel-gige.c b/linux/src/drivers/net/intel-gige.c
new file mode 100644
index 0000000..5884ffb
--- /dev/null
+++ b/linux/src/drivers/net/intel-gige.c
@@ -0,0 +1,1450 @@
+/* intel-gige.c: A Linux device driver for Intel Gigabit Ethernet adapters. */
+/*
+	Written 2000-2002 by Donald Becker.
+	Copyright Scyld Computing Corporation.
+
+	This software may be used and distributed according to the terms of
+	the GNU General Public License (GPL), incorporated herein by reference.
+	You should have received a copy of the GPL with this file.
+	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.
+
+	The author may be reached as becker@scyld.com, or C/O
+	Scyld Computing Corporation
+	410 Severn Ave., Suite 210
+	Annapolis MD 21403
+
+	Support information and updates available at
+	http://www.scyld.com/network/ethernet.html
+*/
+
+/* These identify the driver base version and may not be removed. */
+static const char version1[] =
+"intel-gige.c:v0.14 11/17/2002 Written by Donald Becker <becker@scyld.com>\n";
+static const char version2[] =
+"  http://www.scyld.com/network/ethernet.html\n";
+
+/* Automatically extracted configuration info:
+probe-func: igige_probe
+config-in: tristate 'Intel PCI Gigabit Ethernet support' CONFIG_IGIGE
+
+c-help-name: Intel PCI Gigabit Ethernet support
+c-help-symbol: CONFIG_IGIGE
+c-help: This driver is for the Intel PCI Gigabit Ethernet
+c-help: adapter series.
+c-help: More specific information and updates are available from 
+c-help: http://www.scyld.com/network/drivers.html
+*/
+
+/* The user-configurable values.
+   These may be modified when a driver module is loaded.*/
+
+/* Message enable level: 0..31 = no..all messages.  See NETIF_MSG docs. */
+static int debug = 2;
+
+/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
+static int max_interrupt_work = 20;
+
+/* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
+   This chip has a 16 element perfect filter, and an unusual 4096 bit
+   hash filter based directly on address bits, not the Ethernet CRC.
+   It is costly to recalculate a large, frequently changing table.
+   However even a large table may useful in some nearly-static environments.
+*/
+static int multicast_filter_limit = 15;
+
+/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
+   Setting to > 1518 effectively disables this feature. */
+static int rx_copybreak = 0;
+
+/* Used to pass the media type, etc.
+   The media type is passed in 'options[]'.  The full_duplex[] table only
+   allows the duplex to be forced on, implicitly disabling autonegotiation.
+   Setting the entry to zero still allows a link to autonegotiate to full
+   duplex.
+*/
+#define MAX_UNITS 8		/* More are supported, limit only on options */
+static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
+static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
+
+/* The delay before announcing a Rx or Tx has completed. */
+static int rx_intr_holdoff = 0;
+static int tx_intr_holdoff = 128;
+
+/* Operational parameters that are set at compile time. */
+
+/* Keep the ring sizes a power of two to avoid divides.
+   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. */
+#if ! defined(final_version)		/* Stress the driver. */
+#define TX_RING_SIZE	8
+#define TX_QUEUE_LEN	5
+#define RX_RING_SIZE	4
+#else
+#define TX_RING_SIZE	16
+#define TX_QUEUE_LEN	10		/* Limit ring entries actually used.  */
+#define RX_RING_SIZE	32
+#endif
+
+/* Operational parameters that usually are not changed. */
+/* Time in jiffies before concluding the transmitter is hung. */
+#define TX_TIMEOUT  (6*HZ)
+
+/* Allocation size of Rx buffers with normal sized Ethernet frames.
+   Do not change this value without good reason.  This is not a limit,
+   but a way to keep a consistent allocation size among drivers.
+ */
+#define PKT_BUF_SZ		1536
+
+#ifndef __KERNEL__
+#define __KERNEL__
+#endif
+#if !defined(__OPTIMIZE__)
+#warning  You must compile this file with the correct options!
+#warning  See the last lines of the source file.
+#error You must compile this driver with "-O".
+#endif
+
+/* Include files, designed to support most kernel versions 2.0.0 and later. */
+#include <linux/config.h>
+#if defined(CONFIG_SMP) && ! defined(__SMP__)
+#define __SMP__
+#endif
+#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS)
+#define MODVERSIONS
+#endif
+
+#include <linux/version.h>
+#if defined(MODVERSIONS)
+#include <linux/modversions.h>
+#endif
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#if LINUX_VERSION_CODE >= 0x20400
+#include <linux/slab.h>
+#else
+#include <linux/malloc.h>
+#endif
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <asm/processor.h>		/* Processor type for cache alignment. */
+#include <asm/bitops.h>
+#include <asm/io.h>
+
+#ifdef INLINE_PCISCAN
+#include "k_compat.h"
+#else
+#include "pci-scan.h"
+#include "kern_compat.h"
+#endif
+
+/* Condensed operations for readability. */
+#define virt_to_le32desc(addr)  cpu_to_le32(virt_to_bus(addr))
+#define le32desc_to_virt(addr)  bus_to_virt(le32_to_cpu(addr))
+
+#if (LINUX_VERSION_CODE >= 0x20100)  &&  defined(MODULE)
+char kernel_version[] = UTS_RELEASE;
+#endif
+
+MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
+MODULE_DESCRIPTION("Intel Gigabit Ethernet driver");
+MODULE_LICENSE("GPL");
+MODULE_PARM(debug, "i");
+MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i");
+MODULE_PARM(rx_copybreak, "i");
+MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i");
+MODULE_PARM(multicast_filter_limit, "i");
+MODULE_PARM(max_interrupt_work, "i");
+MODULE_PARM_DESC(debug, "Driver message level (0-31)");
+MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex");
+MODULE_PARM_DESC(max_interrupt_work,
+				 "Driver maximum events handled per interrupt");
+MODULE_PARM_DESC(full_duplex,
+				 "Non-zero to set forced full duplex (deprecated).");
+MODULE_PARM_DESC(rx_copybreak,
+				 "Breakpoint in bytes for copy-only-tiny-frames");
+MODULE_PARM_DESC(multicast_filter_limit,
+				 "Multicast addresses before switching to Rx-all-multicast");
+
+/*
+				Theory of Operation
+
+I. Board Compatibility
+
+This driver is for the Intel Gigabit Ethernet adapter.
+
+II. Board-specific settings
+
+III. Driver operation
+
+IIIa. Descriptor Rings
+
+This driver uses two statically allocated fixed-size descriptor arrays
+treated as rings by the hardware. The ring sizes are set at compile time
+by RX/TX_RING_SIZE.
+
+IIIb/c. Transmit/Receive Structure
+
+This driver uses a zero-copy receive and transmit scheme.
+The driver allocates full frame size skbuffs for the Rx ring buffers at
+open() time and passes the skb->data field to the chip as receive data
+buffers.  When an incoming frame is less than RX_COPYBREAK bytes long,
+a fresh skbuff is allocated and the frame is copied to the new skbuff.
+When the incoming frame is larger, the skbuff is passed directly up the
+protocol stack.  Buffers consumed this way are replaced by newly allocated
+skbuffs in a later phase of receives.
+
+The RX_COPYBREAK value is chosen to trade-off the memory wasted by
+using a full-sized skbuff for small frames vs. the copying costs of larger
+frames.  New boards are typically used in generously configured machines
+and the underfilled buffers have negligible impact compared to the benefit of
+a single allocation size, so the default value of zero results in never
+copying packets.  When copying is done, the cost is usually mitigated by using
+a combined copy/checksum routine.  Copying also preloads the cache, which is
+most useful with small frames.
+
+A subtle aspect of the operation is that the IP header at offset 14 in an
+ethernet frame isn't longword aligned for further processing.
+When unaligned buffers are permitted by the hardware (and always on copies)
+frames are put into the skbuff at an offset of "+2", 16-byte aligning
+the IP header.
+
+IIId. Synchronization
+
+The driver runs as two independent, single-threaded flows of control.
+One is the send-packet routine which is single-threaded by the queue
+layer.  The other thread is the interrupt handler, which is single
+threaded by the hardware and interrupt handling software.
+
+The send packet thread has partial control over the Tx ring.  At the
+start of a transmit attempt netif_pause_tx_queue(dev) is called.  If the
+transmit attempt fills the Tx queue controlled by the chip, the driver
+informs the software queue layer by not calling
+netif_unpause_tx_queue(dev) on exit.
+
+The interrupt handler has exclusive control over the Rx ring and records stats
+from the Tx ring.  After reaping the stats, it marks the Tx queue entry as
+empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it
+clears both the tx_full and tbusy flags.
+
+IIId. SMP semantics
+
+The following are serialized with respect to each other via the "xmit_lock".
+  dev->hard_start_xmit()	Transmit a packet
+  dev->tx_timeout()			Transmit watchdog for stuck Tx
+  dev->set_multicast_list()	Set the recieve filter.
+Note: The Tx timeout watchdog code is implemented by the timer routine in
+kernels up to 2.2.*.  In 2.4.* and later the timeout code is part of the
+driver interface.
+
+The following fall under the global kernel lock.  The module will not be
+unloaded during the call, unless a call with a potential reschedule e.g.
+kmalloc() is called.  No other synchronization assertion is made.
+  dev->open()
+  dev->do_ioctl()
+  dev->get_stats()
+Caution: The lock for dev->open() is commonly broken with request_irq() or
+kmalloc().  It is best to avoid any lock-breaking call in do_ioctl() and
+get_stats(), or additional module locking code must be implemented.
+
+The following is self-serialized (no simultaneous entry)
+  An handler registered with request_irq().
+
+IV. Notes
+
+IVb. References
+
+Intel has also released a Linux driver for this product, "e1000".
+
+IVc. Errata
+
+*/
+
+
+
+static void *igige_probe1(struct pci_dev *pdev, void *init_dev,
+						   long ioaddr, int irq, int chip_idx, int find_cnt);
+static int netdev_pwr_event(void *dev_instance, int event);
+enum chip_capability_flags { CanHaveMII=1, };
+#define PCI_IOTYPE ()
+
+static struct pci_id_info pci_id_tbl[] = {
+	{"Intel Gigabit Ethernet adapter", {0x10008086, 0xffffffff, },
+	 PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR0, 0x1ffff, 0},
+	{0,},						/* 0 terminated list. */
+};
+
+struct drv_id_info igige_drv_id = {
+	"intel-gige", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl,
+	igige_probe1, netdev_pwr_event };
+
+/* This hardware only has a PCI memory space BAR, not I/O space. */
+#ifdef USE_IO_OPS
+#error This driver only works with PCI memory space access.
+#endif
+
+/* Offsets to the device registers.
+*/
+enum register_offsets {
+	ChipCtrl=0x00, ChipStatus=0x08, EECtrl=0x10,
+	FlowCtrlAddrLo=0x028, FlowCtrlAddrHi=0x02c, FlowCtrlType=0x030,
+	VLANetherType=0x38,
+
+	RxAddrCAM=0x040,
+	IntrStatus=0x0C0,			/* Interrupt, Clear on Read, AKA ICR */
+	IntrEnable=0x0D0,			/* Set enable mask when '1' AKA IMS */
+	IntrDisable=0x0D8,			/* Clear enable mask when '1' */
+
+	RxControl=0x100,
+	RxQ0IntrDelay=0x108,		/* Rx list #0 interrupt delay timer. */
+	RxRingPtr=0x110,			/* Rx Desc. list #0 base address, 64bits */
+	RxRingLen=0x118,			/* Num bytes of Rx descriptors in ring.  */
+	RxDescHead=0x120,
+	RxDescTail=0x128,
+
+	RxQ1IntrDelay=0x130,		/* Rx list #1 interrupt delay timer. */
+	RxRing1Ptr=0x138,			/* Rx Desc. list #1 base address, 64bits */
+	RxRing1Len=0x140,			/* Num bytes of Rx descriptors in ring.  */
+	RxDesc1Head=0x148,
+	RxDesc1Tail=0x150,
+
+	FlowCtrlTimer=0x170, FlowCtrlThrshHi=0x160, FlowCtrlThrshLo=0x168, 
+	TxConfigReg=0x178,
+	RxConfigReg=0x180,
+	MulticastArray=0x200,
+
+	TxControl=0x400,
+	TxQState=0x408,				/* 64 bit queue state */
+	TxIPG=0x410,				/* Inter-Packet Gap */
+	TxRingPtr=0x420, TxRingLen=0x428,
+	TxDescHead=0x430, TxDescTail=0x438, TxIntrDelay=0x440,
+
+	RxCRCErrs=0x4000, RxMissed=0x4010,
+
+	TxStatus=0x408,
+	RxStatus=0x180,
+};
+
+/* Bits in the interrupt status/mask registers. */
+enum intr_status_bits {
+	IntrTxDone=0x0001,			/* Tx packet queued */
+	IntrLinkChange=0x0004,		/* Link Status Change */
+	IntrRxSErr=0x0008, 			/* Rx Symbol/Sequence error */
+	IntrRxEmpty=0x0010,			/* Rx queue 0 Empty */
+	IntrRxQ1Empty=0x0020,		/* Rx queue 1 Empty */
+	IntrRxDone=0x0080,			/* Rx Done, Queue 0*/
+	IntrRxDoneQ1=0x0100,		/* Rx Done, Queue 0*/
+	IntrPCIErr=0x0200,			/* PCI Bus Error */
+
+	IntrTxEmpty=0x0002,			/* Guess */
+	StatsMax=0x1000,			/* Unknown */
+};
+
+/* Bits in the RxFilterMode register. */
+enum rx_mode_bits {
+	RxCtrlReset=0x01, RxCtrlEnable=0x02, RxCtrlAllUnicast=0x08,
+	RxCtrlAllMulticast=0x10,
+	RxCtrlLoopback=0xC0,		/* We never configure loopback */
+	RxCtrlAcceptBroadcast=0x8000, 
+	/* Aliased names.*/
+	AcceptAllPhys=0x08,	AcceptAllMulticast=0x10, AcceptBroadcast=0x8000,
+	AcceptMyPhys=0,
+	AcceptMulticast=0,
+};
+
+/* The Rx and Tx buffer descriptors. */
+struct rx_desc {
+	u32 buf_addr;
+	u32 buf_addr_hi;
+	u32 csum_length;			/* Checksum and length */
+	u32 status;					/* Errors and status. */
+};
+
+struct tx_desc {
+	u32 buf_addr;
+	u32 buf_addr_hi;
+	u32 cmd_length;
+	u32 status;					/* And errors */
+};
+
+/* Bits in tx_desc.cmd_length */
+enum tx_cmd_bits {
+	TxDescEndPacket=0x02000000, TxCmdIntrDelay=0x80000000,
+	TxCmdAddCRC=0x02000000, TxCmdDoTx=0x13000000,
+};
+enum tx_status_bits {
+	TxDescDone=0x0001, TxDescEndPkt=0x0002,
+};
+
+/* Bits in tx_desc.status */
+enum rx_status_bits {
+	RxDescDone=0x0001, RxDescEndPkt=0x0002,
+};
+
+
+#define PRIV_ALIGN	15 	/* Required alignment mask */
+/* Use  __attribute__((aligned (L1_CACHE_BYTES)))  to maintain alignment
+   within the structure. */
+struct netdev_private {
+	struct net_device *next_module;		/* Link for devices of this type. */
+	void *priv_addr;					/* Unaligned address for kfree */
+	const char *product_name;
+	/* The addresses of receive-in-place skbuffs. */
+	struct sk_buff* rx_skbuff[RX_RING_SIZE];
+	/* The saved address of a sent-in-place packet/buffer, for later free(). */
+	struct sk_buff* tx_skbuff[TX_RING_SIZE];
+	struct net_device_stats stats;
+	struct timer_list timer;	/* Media monitoring timer. */
+	/* Keep frequently used values adjacent for cache effect. */
+	int msg_level;
+	int chip_id, drv_flags;
+	struct pci_dev *pci_dev;
+	int max_interrupt_work;
+	int intr_enable;
+	long in_interrupt;			/* Word-long for SMP locks. */
+
+	struct rx_desc *rx_ring;
+	struct rx_desc *rx_head_desc;
+	unsigned int cur_rx, dirty_rx;		/* Producer/consumer ring indices */
+	unsigned int rx_buf_sz;				/* Based on MTU+slack. */
+	int rx_copybreak;
+
+	struct tx_desc *tx_ring;
+	unsigned int cur_tx, dirty_tx;
+	unsigned int tx_full:1;				/* The Tx queue is full. */
+
+	unsigned int rx_mode;
+	unsigned int tx_config;
+	int multicast_filter_limit;
+	/* These values track the transceiver/media in use. */
+	unsigned int full_duplex:1;			/* Full-duplex operation requested. */
+	unsigned int duplex_lock:1;
+	unsigned int medialock:1;			/* Do not sense media. */
+	unsigned int default_port;			/* Last dev->if_port value. */
+};
+
+static int  eeprom_read(long ioaddr, int location);
+static int  netdev_open(struct net_device *dev);
+static int  change_mtu(struct net_device *dev, int new_mtu);
+static void check_duplex(struct net_device *dev);
+static void netdev_timer(unsigned long data);
+static void tx_timeout(struct net_device *dev);
+static void init_ring(struct net_device *dev);
+static int  start_tx(struct sk_buff *skb, struct net_device *dev);
+static void intr_handler(int irq, void *dev_instance, struct pt_regs *regs);
+static void netdev_error(struct net_device *dev, int intr_status);
+static int  netdev_rx(struct net_device *dev);
+static void netdev_error(struct net_device *dev, int intr_status);
+static void set_rx_mode(struct net_device *dev);
+static struct net_device_stats *get_stats(struct net_device *dev);
+static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static int  netdev_close(struct net_device *dev);
+
+
+
+/* A list of our installed devices, for removing the driver module. */
+static struct net_device *root_net_dev = NULL;
+
+#ifndef MODULE
+int igige_probe(struct net_device *dev)
+{
+	if (pci_drv_register(&igige_drv_id, dev) < 0)
+		return -ENODEV;
+	printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
+	return 0;
+}
+#endif
+
+static void *igige_probe1(struct pci_dev *pdev, void *init_dev,
+						   long ioaddr, int irq, int chip_idx, int card_idx)
+{
+	struct net_device *dev;
+	struct netdev_private *np;
+	void *priv_mem;
+	int i, option = card_idx < MAX_UNITS ? options[card_idx] : 0;
+
+	dev = init_etherdev(init_dev, 0);
+	if (!dev)
+		return NULL;
+
+	printk(KERN_INFO "%s: %s at 0x%lx, ",
+		   dev->name, pci_id_tbl[chip_idx].name, ioaddr);
+
+	for (i = 0; i < 3; i++)
+		((u16*)dev->dev_addr)[i] = le16_to_cpu(eeprom_read(ioaddr, i));
+	for (i = 0; i < 5; i++)
+		printk("%2.2x:", dev->dev_addr[i]);
+	printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq);
+
+	/* Make certain elements e.g. descriptor lists are aligned. */
+	priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL);
+	/* Check for the very unlikely case of no memory. */
+	if (priv_mem == NULL)
+		return NULL;
+
+	/* Do bogusness checks before this point.
+	   We do a request_region() only to register /proc/ioports info. */
+	request_region(ioaddr, pci_id_tbl[chip_idx].io_size, dev->name);
+
+	/* Reset the chip to erase previous misconfiguration. */
+	writel(0x04000000, ioaddr + ChipCtrl);
+
+	dev->base_addr = ioaddr;
+	dev->irq = irq;
+
+	dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN);
+	memset(np, 0, sizeof(*np));
+	np->priv_addr = priv_mem;
+
+	np->next_module = root_net_dev;
+	root_net_dev = dev;
+
+	np->pci_dev = pdev;
+	np->chip_id = chip_idx;
+	np->drv_flags = pci_id_tbl[chip_idx].drv_flags;
+	np->msg_level = (1 << debug) - 1;
+	np->rx_copybreak = rx_copybreak;
+	np->max_interrupt_work = max_interrupt_work;
+	np->multicast_filter_limit = multicast_filter_limit;
+
+	if (dev->mem_start)
+		option = dev->mem_start;
+
+	/* The lower four bits are the media type. */
+	if (option > 0) {
+		if (option & 0x2220)
+			np->full_duplex = 1;
+		np->default_port = option & 0x3330;
+		if (np->default_port)
+			np->medialock = 1;
+	}
+	if (card_idx < MAX_UNITS  &&  full_duplex[card_idx] > 0)
+		np->full_duplex = 1;
+
+	if (np->full_duplex)
+		np->duplex_lock = 1;
+
+#if ! defined(final_version) /* Dump the EEPROM contents during development. */
+	if (np->msg_level & NETIF_MSG_MISC) {
+		int sum = 0;
+		for (i = 0; i < 0x40; i++) {
+			int eeval = eeprom_read(ioaddr, i);
+			printk("%4.4x%s", eeval, i % 16 != 15 ? " " : "\n");
+			sum += eeval;
+		}
+		printk(KERN_DEBUG "%s:  EEPROM checksum %4.4X (expected value 0xBABA).\n",
+			   dev->name, sum & 0xffff);
+	}
+#endif
+
+	/* The chip-specific entries in the device structure. */
+	dev->open = &netdev_open;
+	dev->hard_start_xmit = &start_tx;
+	dev->stop = &netdev_close;
+	dev->get_stats = &get_stats;
+	dev->set_multicast_list = &set_rx_mode;
+	dev->do_ioctl = &mii_ioctl;
+	dev->change_mtu = &change_mtu;
+
+	/* Turn off VLAN and clear the VLAN filter. */
+	writel(0x04000000, ioaddr + VLANetherType);
+	for (i = 0x600; i < 0x800; i+=4)
+		writel(0, ioaddr + i);
+	np->tx_config = 0x80000020;
+	writel(np->tx_config, ioaddr + TxConfigReg);
+	{
+		int eeword10 = eeprom_read(ioaddr, 10);
+		writel(((eeword10 & 0x01e0) << 17) | ((eeword10 & 0x0010) << 3),
+			   ioaddr + ChipCtrl);
+	}
+
+	return dev;
+}
+
+
+/* Read the EEPROM interface with a serial bit streams generated by the
+   host processor. 
+   The example below is for the common 93c46 EEPROM, 64 16 bit words. */
+
+/* Delay between EEPROM clock transitions.
+   The effectivly flushes the write cache to prevent quick double-writes.
+*/
+#define eeprom_delay(ee_addr)	readl(ee_addr)
+
+enum EEPROM_Ctrl_Bits {
+	EE_ShiftClk=0x01, EE_ChipSelect=0x02, EE_DataIn=0x08, EE_DataOut=0x04,
+};
+#define EE_Write0 (EE_ChipSelect)
+#define EE_Write1 (EE_ChipSelect | EE_DataOut)
+
+/* The EEPROM commands include the alway-set leading bit. */
+enum EEPROM_Cmds { EE_WriteCmd=5, EE_ReadCmd=6, EE_EraseCmd=7, };
+
+static int eeprom_read(long addr, int location)
+{
+	int i;
+	int retval = 0;
+	long ee_addr = addr + EECtrl;
+	int read_cmd = ((EE_ReadCmd<<6) | location) << 16 ;
+	int cmd_len = 2+6+16;
+	u32 baseval = readl(ee_addr) & ~0x0f;
+
+	writel(EE_Write0 | baseval, ee_addr);
+
+	/* Shift the read command bits out. */
+	for (i = cmd_len; i >= 0; i--) {
+		int dataval = baseval |
+			((read_cmd & (1 << i)) ? EE_Write1 : EE_Write0);
+		writel(dataval, ee_addr);
+		eeprom_delay(ee_addr);
+		writel(dataval | EE_ShiftClk, ee_addr);
+		eeprom_delay(ee_addr);
+		retval = (retval << 1) | ((readl(ee_addr) & EE_DataIn) ? 1 : 0);
+	}
+
+	/* Terminate the EEPROM access. */
+	writel(baseval | EE_Write0, ee_addr);
+	writel(baseval & ~EE_ChipSelect, ee_addr);
+	return retval;
+}
+
+
+
+static int netdev_open(struct net_device *dev)
+{
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	long ioaddr = dev->base_addr;
+
+	/* Some chips may need to be reset. */
+
+	MOD_INC_USE_COUNT;
+
+	if (np->tx_ring == 0)
+		np->tx_ring = (void *)get_free_page(GFP_KERNEL);
+	if (np->tx_ring == 0)
+		return -ENOMEM;
+	if (np->rx_ring == 0)
+		np->rx_ring = (void *)get_free_page(GFP_KERNEL);
+	if (np->tx_ring == 0) {
+		free_page((long)np->tx_ring);
+		return -ENOMEM;
+	}
+
+	/* Note that both request_irq() and init_ring() call kmalloc(), which
+	   break the global kernel lock protecting this routine. */
+	if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) {
+		MOD_DEC_USE_COUNT;
+		return -EAGAIN;
+	}
+
+	if (np->msg_level & NETIF_MSG_IFUP)
+		printk(KERN_DEBUG "%s: netdev_open() irq %d.\n",
+			   dev->name, dev->irq);
+
+	init_ring(dev);
+
+	writel(0, ioaddr + RxControl);
+	writel(virt_to_bus(np->rx_ring), ioaddr + RxRingPtr);
+#if ADDRLEN == 64
+	writel(virt_to_bus(np->rx_ring) >> 32, ioaddr + RxRingPtr + 4);
+#else
+	writel(0, ioaddr + RxRingPtr + 4);
+#endif
+
+	writel(RX_RING_SIZE * sizeof(struct rx_desc), ioaddr + RxRingLen);
+	writel(0x80000000 | rx_intr_holdoff, ioaddr + RxQ0IntrDelay);
+	writel(0, ioaddr + RxDescHead);
+	writel(np->dirty_rx + RX_RING_SIZE, ioaddr + RxDescTail);
+
+	/* Zero the unused Rx ring #1. */
+	writel(0, ioaddr + RxQ1IntrDelay);
+	writel(0, ioaddr + RxRing1Ptr);
+	writel(0, ioaddr + RxRing1Ptr + 4);
+	writel(0, ioaddr + RxRing1Len);
+	writel(0, ioaddr + RxDesc1Head);
+	writel(0, ioaddr + RxDesc1Tail);
+
+	/* Use 0x002000FA for half duplex. */
+	writel(0x000400FA, ioaddr + TxControl);
+
+	writel(virt_to_bus(np->tx_ring), ioaddr + TxRingPtr);
+#if ADDRLEN == 64
+	writel(virt_to_bus(np->tx_ring) >> 32, ioaddr + TxRingPtr + 4);
+#else
+	writel(0, ioaddr + TxRingPtr + 4);
+#endif
+
+	writel(TX_RING_SIZE * sizeof(struct tx_desc), ioaddr + TxRingLen);
+	writel(0, ioaddr + TxDescHead);
+	writel(0, ioaddr + TxDescTail);
+	writel(0, ioaddr + TxQState);
+	writel(0, ioaddr + TxQState + 4);
+
+	/* Set IPG register with Ethernet standard values. */
+	writel(0x00A0080A, ioaddr + TxIPG);
+	/* The delay before announcing a Tx has completed. */
+	writel(tx_intr_holdoff, ioaddr + TxIntrDelay);
+
+	writel(((u32*)dev->dev_addr)[0], ioaddr + RxAddrCAM);
+	writel(0x80000000 | ((((u32*)dev->dev_addr)[1]) & 0xffff),
+		   ioaddr + RxAddrCAM + 4);
+
+	/* Initialize other registers. */
+	/* Configure the PCI bus bursts and FIFO thresholds. */
+
+	if (dev->if_port == 0)
+		dev->if_port = np->default_port;
+
+	np->in_interrupt = 0;
+
+	np->rx_mode = RxCtrlEnable;
+	set_rx_mode(dev);
+
+	/* Tx mode */
+	np->tx_config = 0x80000020;
+	writel(np->tx_config, ioaddr + TxConfigReg);
+
+	/* Flow control */
+	writel(0x00C28001, ioaddr + FlowCtrlAddrLo);
+	writel(0x00000100, ioaddr + FlowCtrlAddrHi);
+	writel(0x8808, ioaddr + FlowCtrlType);
+	writel(0x0100, ioaddr + FlowCtrlTimer);
+	writel(0x8000, ioaddr + FlowCtrlThrshHi);
+	writel(0x4000, ioaddr + FlowCtrlThrshLo);
+
+	netif_start_tx_queue(dev);
+
+	/* Enable interrupts by setting the interrupt mask. */
+	writel(IntrTxDone | IntrLinkChange | IntrRxDone | IntrPCIErr
+		   | IntrRxEmpty | IntrRxSErr, ioaddr + IntrEnable);
+
+	/*	writel(1, dev->base_addr + RxCmd);*/
+
+	if (np->msg_level & NETIF_MSG_IFUP)
+		printk(KERN_DEBUG "%s: Done netdev_open(), status: %x Rx %x Tx %x.\n",
+			   dev->name, (int)readl(ioaddr + ChipStatus),
+			   (int)readl(ioaddr + RxStatus), (int)readl(ioaddr + TxStatus));
+
+	/* Set the timer to check for link beat. */
+	init_timer(&np->timer);
+	np->timer.expires = jiffies + 3*HZ;
+	np->timer.data = (unsigned long)dev;
+	np->timer.function = &netdev_timer;				/* timer handler */
+	add_timer(&np->timer);
+
+	return 0;
+}
+
+/* Update for jumbo frames...
+   Changing the MTU while active is not allowed.
+ */
+static int change_mtu(struct net_device *dev, int new_mtu)
+{
+	if ((new_mtu < 68) || (new_mtu > 1500))
+		return -EINVAL;
+	if (netif_running(dev))
+		return -EBUSY;
+	dev->mtu = new_mtu;
+	return 0;
+}
+
+static void check_duplex(struct net_device *dev)
+{
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	long ioaddr = dev->base_addr;
+	int chip_ctrl = readl(ioaddr + ChipCtrl);
+	int rx_cfg = readl(ioaddr + RxConfigReg);
+	int tx_cfg = readl(ioaddr + TxConfigReg);
+#if 0
+	int chip_status = readl(ioaddr + ChipStatus);
+#endif
+
+	if (np->msg_level & NETIF_MSG_LINK)
+		printk(KERN_DEBUG "%s:  Link changed status.  Ctrl %x rxcfg %8.8x "
+			   "txcfg %8.8x.\n",
+			   dev->name, chip_ctrl, rx_cfg, tx_cfg);
+	if (np->medialock) {
+		if (np->full_duplex)
+			;
+	}
+	/* writew(new_tx_mode, ioaddr + TxMode); */
+}
+
+static void netdev_timer(unsigned long data)
+{
+	struct net_device *dev = (struct net_device *)data;
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	long ioaddr = dev->base_addr;
+	int next_tick = 10*HZ;
+
+	if (np->msg_level & NETIF_MSG_TIMER) {
+		printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x, "
+			   "Tx %x Rx %x.\n",
+			   dev->name, (int)readl(ioaddr + ChipStatus),
+			   (int)readl(ioaddr + TxStatus), (int)readl(ioaddr + RxStatus));
+	}
+	/* This will either have a small false-trigger window or will not catch
+	   tbusy incorrectly set when the queue is empty. */
+	if ((jiffies - dev->trans_start) > TX_TIMEOUT  &&
+		(np->cur_tx - np->dirty_tx > 0  ||
+		 netif_queue_paused(dev)) ) {
+		tx_timeout(dev);
+	}
+	check_duplex(dev);
+	np->timer.expires = jiffies + next_tick;
+	add_timer(&np->timer);
+}
+
+static void tx_timeout(struct net_device *dev)
+{
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	long ioaddr = dev->base_addr;
+
+	printk(KERN_WARNING "%s: Transmit timed out, status %8.8x,"
+		   " resetting...\n", dev->name, (int)readl(ioaddr + ChipStatus));
+
+#ifndef __alpha__
+	if (np->msg_level & NETIF_MSG_TX_ERR) {
+		int i;
+		printk(KERN_DEBUG "  Tx registers: ");
+		for (i = 0x400; i < 0x444; i += 8)
+			printk(" %8.8x", (int)readl(ioaddr + i));
+		printk("\n"KERN_DEBUG "  Rx ring %p: ", np->rx_ring);
+		for (i = 0; i < RX_RING_SIZE; i++)
+			printk(" %8.8x", (unsigned int)np->rx_ring[i].status);
+		printk("\n"KERN_DEBUG"  Tx ring %p: ", np->tx_ring);
+		for (i = 0; i < TX_RING_SIZE; i++)
+			printk(" %4.4x", np->tx_ring[i].status);
+		printk("\n");
+	}
+#endif
+
+	/* Perhaps we should reinitialize the hardware here. */
+	dev->if_port = 0;
+	/* Stop and restart the chip's Tx processes . */
+
+	/* Trigger an immediate transmit demand. */
+
+	dev->trans_start = jiffies;
+	np->stats.tx_errors++;
+	return;
+}
+
+
+/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
+static void init_ring(struct net_device *dev)
+{
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	int i;
+
+	np->tx_full = 0;
+	np->cur_rx = np->cur_tx = 0;
+	np->dirty_rx = np->dirty_tx = 0;
+
+	np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
+	np->rx_head_desc = &np->rx_ring[0];
+
+	/* Initialize all Rx descriptors. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		np->rx_skbuff[i] = 0;
+	}
+
+	/* The number of ring descriptors is set by the ring length register,
+	   thus the chip does not use 'next_desc' chains. */
+
+	/* Fill in the Rx buffers.  Allocation failures are acceptable. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz);
+		np->rx_skbuff[i] = skb;
+		if (skb == NULL)
+			break;
+		skb->dev = dev;			/* Mark as being used by this device. */
+		skb_reserve(skb, 2);	/* 16 byte align the IP header. */
+		np->rx_ring[i].buf_addr = virt_to_le32desc(skb->tail);
+		np->rx_ring[i].buf_addr_hi = 0;
+		np->rx_ring[i].status = 0;
+	}
+	np->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
+
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		np->tx_skbuff[i] = 0;
+		np->tx_ring[i].status = 0;
+	}
+	return;
+}
+
+static int start_tx(struct sk_buff *skb, struct net_device *dev)
+{
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	unsigned entry;
+
+	/* Block a timer-based transmit from overlapping.  This happens when
+	   packets are presumed lost, and we use this check the Tx status. */
+	if (netif_pause_tx_queue(dev) != 0) {
+		/* This watchdog code is redundant with the media monitor timer. */
+		if (jiffies - dev->trans_start > TX_TIMEOUT)
+			tx_timeout(dev);
+		return 1;
+	}
+
+	/* Calculate the next Tx descriptor entry. */
+	entry = np->cur_tx % TX_RING_SIZE;
+
+	np->tx_skbuff[entry] = skb;
+
+	/* Note: Descriptors may be uncached.  Write each field only once. */
+	np->tx_ring[entry].buf_addr = virt_to_le32desc(skb->data);
+	np->tx_ring[entry].buf_addr_hi = 0;
+	np->tx_ring[entry].cmd_length = cpu_to_le32(TxCmdDoTx | skb->len);
+	np->tx_ring[entry].status = 0;
+
+	/* Non-CC architectures: explicitly flush descriptor and packet.
+	   cache_flush(np->tx_ring[entry], sizeof np->tx_ring[entry]);
+	   cache_flush(skb->data, skb->len);
+	*/
+
+	np->cur_tx++;
+	if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) {
+		np->tx_full = 1;
+		/* Check for a just-cleared queue. */
+		if (np->cur_tx - (volatile int)np->dirty_tx < TX_QUEUE_LEN - 2) {
+			netif_unpause_tx_queue(dev);
+			np->tx_full = 0;
+		} else
+			netif_stop_tx_queue(dev);
+	} else
+		netif_unpause_tx_queue(dev);		/* Typical path */
+
+	/* Inform the chip we have another Tx. */
+	if (np->msg_level & NETIF_MSG_TX_QUEUED)
+		printk(KERN_DEBUG "%s: Tx queued to slot %d, desc tail now %d "
+			   "writing %d.\n",
+			   dev->name, entry, (int)readl(dev->base_addr + TxDescTail),
+			   np->cur_tx % TX_RING_SIZE);
+	writel(np->cur_tx % TX_RING_SIZE, dev->base_addr + TxDescTail);
+
+	dev->trans_start = jiffies;
+
+	if (np->msg_level & NETIF_MSG_TX_QUEUED) {
+		printk(KERN_DEBUG "%s: Transmit frame #%d (%x) queued in slot %d.\n",
+			   dev->name, np->cur_tx, (int)virt_to_bus(&np->tx_ring[entry]),
+			   entry);
+	}
+	return 0;
+}
+
+/* The interrupt handler does all of the Rx thread work and cleans up
+   after the Tx thread. */
+static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs)
+{
+	struct net_device *dev = (struct net_device *)dev_instance;
+	struct netdev_private *np;
+	long ioaddr;
+	int work_limit;
+
+	ioaddr = dev->base_addr;
+	np = (struct netdev_private *)dev->priv;
+	work_limit = np->max_interrupt_work;
+
+#if defined(__i386__)  &&  LINUX_VERSION_CODE < 0x020300
+	/* A lock to prevent simultaneous entry bug on Intel SMP machines. */
+	if (test_and_set_bit(0, (void*)&dev->interrupt)) {
+		printk(KERN_ERR"%s: SMP simultaneous entry of an interrupt handler.\n",
+			   dev->name);
+		dev->interrupt = 0;	/* Avoid halting machine. */
+		return;
+	}
+#endif
+
+	do {
+		u32 intr_status = readl(ioaddr + IntrStatus);
+
+		if (np->msg_level & NETIF_MSG_INTR)
+			printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n",
+				   dev->name, intr_status);
+
+		if (intr_status == 0 || intr_status == 0xffffffff)
+			break;
+
+		if (intr_status & IntrRxDone)
+			netdev_rx(dev);
+
+		for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
+			int entry = np->dirty_tx % TX_RING_SIZE;
+			if (np->tx_ring[entry].status == 0)
+				break;
+			if (np->msg_level & NETIF_MSG_TX_DONE)
+				printk(KERN_DEBUG "%s: Transmit done, Tx status %8.8x.\n",
+					   dev->name, np->tx_ring[entry].status);
+			np->stats.tx_packets++;
+#if LINUX_VERSION_CODE > 0x20127
+			np->stats.tx_bytes += np->tx_skbuff[entry]->len;
+#endif
+			/* Free the original skb. */
+			dev_free_skb_irq(np->tx_skbuff[entry]);
+			np->tx_skbuff[entry] = 0;
+		}
+		/* Note the 4 slot hysteresis to mark the queue non-full. */
+		if (np->tx_full  &&  np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
+			/* The ring is no longer full, allow new TX entries. */
+			np->tx_full = 0;
+			netif_resume_tx_queue(dev);
+		}
+
+		/* Abnormal error summary/uncommon events handlers. */
+		if (intr_status & (IntrPCIErr | IntrLinkChange | StatsMax))
+			netdev_error(dev, intr_status);
+
+		if (--work_limit < 0) {
+			printk(KERN_WARNING "%s: Too much work at interrupt, "
+				   "status=0x%4.4x.\n",
+				   dev->name, intr_status);
+			break;
+		}
+	} while (1);
+
+	if (np->msg_level & NETIF_MSG_INTR)
+		printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
+			   dev->name, (int)readl(ioaddr + IntrStatus));
+
+#if defined(__i386__)  &&  LINUX_VERSION_CODE < 0x020300
+	clear_bit(0, (void*)&dev->interrupt);
+#endif
+	return;
+}
+
+/* This routine is logically part of the interrupt handler, but separated
+   for clarity and better register allocation. */
+static int netdev_rx(struct net_device *dev)
+{
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	int entry = np->cur_rx % RX_RING_SIZE;
+	int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx;
+
+	if (np->msg_level & NETIF_MSG_RX_STATUS) {
+		printk(KERN_DEBUG " In netdev_rx(), entry %d status %4.4x.\n",
+			   entry, np->rx_ring[entry].status);
+	}
+
+	/* If EOP is set on the next entry, it's a new packet. Send it up. */
+	while (np->rx_head_desc->status & cpu_to_le32(RxDescDone)) {
+		struct rx_desc *desc = np->rx_head_desc;
+		u32 desc_status = le32_to_cpu(desc->status);
+		int data_size = le32_to_cpu(desc->csum_length);
+
+		if (np->msg_level & NETIF_MSG_RX_STATUS)
+			printk(KERN_DEBUG "  netdev_rx() status was %8.8x.\n",
+				   desc_status);
+		if (--boguscnt < 0)
+			break;
+		if ( ! (desc_status & RxDescEndPkt)) {
+			printk(KERN_WARNING "%s: Oversized Ethernet frame spanned "
+				   "multiple buffers, entry %#x length %d status %4.4x!\n",
+				   dev->name, np->cur_rx, data_size, desc_status);
+			np->stats.rx_length_errors++;
+		} else {
+			struct sk_buff *skb;
+			/* Reported length should omit the CRC. */
+			int pkt_len = (data_size & 0xffff) - 4;
+
+#ifndef final_version
+			if (np->msg_level & NETIF_MSG_RX_STATUS)
+				printk(KERN_DEBUG "  netdev_rx() normal Rx pkt length %d"
+					   " of %d, bogus_cnt %d.\n",
+					   pkt_len, data_size, boguscnt);
+#endif
+			/* Check if the packet is long enough to accept without copying
+			   to a minimally-sized skbuff. */
+			if (pkt_len < np->rx_copybreak
+				&& (skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
+				skb->dev = dev;
+				skb_reserve(skb, 2);	/* 16 byte align the IP header */
+#if HAS_IP_COPYSUM			/* Call copy + cksum if available. */
+				eth_copy_and_sum(skb, np->rx_skbuff[entry]->tail, pkt_len, 0);
+				skb_put(skb, pkt_len);
+#else
+				memcpy(skb_put(skb, pkt_len), np->rx_skbuff[entry]->tail,
+					   pkt_len);
+#endif
+			} else {
+				char *temp = skb_put(skb = np->rx_skbuff[entry], pkt_len);
+				np->rx_skbuff[entry] = NULL;
+#ifndef final_version				/* Remove after testing. */
+				if (le32desc_to_virt(np->rx_ring[entry].buf_addr) != temp)
+					printk(KERN_ERR "%s: Internal fault: The skbuff addresses "
+						   "do not match in netdev_rx: %p vs. %p / %p.\n",
+						   dev->name,
+						   le32desc_to_virt(np->rx_ring[entry].buf_addr),
+						   skb->head, temp);
+#endif
+			}
+#ifndef final_version				/* Remove after testing. */
+			/* You will want this info for the initial debug. */
+			if (np->msg_level & NETIF_MSG_PKTDATA)
+				printk(KERN_DEBUG "  Rx data %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:"
+					   "%2.2x %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x %2.2x%2.2x "
+					   "%d.%d.%d.%d.\n",
+					   skb->data[0], skb->data[1], skb->data[2], skb->data[3],
+					   skb->data[4], skb->data[5], skb->data[6], skb->data[7],
+					   skb->data[8], skb->data[9], skb->data[10],
+					   skb->data[11], skb->data[12], skb->data[13],
+					   skb->data[14], skb->data[15], skb->data[16],
+					   skb->data[17]);
+#endif
+			skb->protocol = eth_type_trans(skb, dev);
+			/* Note: checksum -> skb->ip_summed = CHECKSUM_UNNECESSARY; */
+			netif_rx(skb);
+			dev->last_rx = jiffies;
+			np->stats.rx_packets++;
+#if LINUX_VERSION_CODE > 0x20127
+			np->stats.rx_bytes += pkt_len;
+#endif
+		}
+		entry = (++np->cur_rx) % RX_RING_SIZE;
+		np->rx_head_desc = &np->rx_ring[entry];
+	}
+
+	/* Refill the Rx ring buffers. */
+	for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) {
+		struct sk_buff *skb;
+		entry = np->dirty_rx % RX_RING_SIZE;
+		if (np->rx_skbuff[entry] == NULL) {
+			skb = dev_alloc_skb(np->rx_buf_sz);
+			np->rx_skbuff[entry] = skb;
+			if (skb == NULL)
+				break;				/* Better luck next round. */
+			skb->dev = dev;			/* Mark as being used by this device. */
+			skb_reserve(skb, 2);	/* Align IP on 16 byte boundaries */
+			np->rx_ring[entry].buf_addr = virt_to_le32desc(skb->tail);
+		}
+		np->rx_ring[entry].status = 0;
+	}
+
+	/* Restart Rx engine if stopped. */
+	/* writel(1, dev->base_addr + RxCmd); */
+	return 0;
+}
+
+static void netdev_error(struct net_device *dev, int intr_status)
+{
+	long ioaddr = dev->base_addr;
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+
+	if (intr_status & IntrLinkChange) {
+		int chip_ctrl = readl(ioaddr + ChipCtrl);
+		if (np->msg_level & NETIF_MSG_LINK)
+			printk(KERN_ERR "%s: Link changed: Autonegotiation on-going.\n",
+				   dev->name);
+		if (chip_ctrl & 1)
+			netif_link_up(dev);
+		else
+			netif_link_down(dev);
+		check_duplex(dev);
+	}
+	if (intr_status & StatsMax) {
+		get_stats(dev);
+	}
+	if ((intr_status & ~(IntrLinkChange|StatsMax))
+		&& (np->msg_level & NETIF_MSG_DRV))
+		printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n",
+			   dev->name, intr_status);
+	/* Hmmmmm, it's not clear how to recover from PCI faults. */
+	if (intr_status & IntrPCIErr)
+		np->stats.tx_fifo_errors++;
+}
+
+static struct net_device_stats *get_stats(struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	int crc_errs = readl(ioaddr + RxCRCErrs);
+
+	if (crc_errs != 0xffffffff) {
+		/* We need not lock this segment of code for SMP.
+		   The non-atomic-add vulnerability is very small
+		   and statistics are non-critical. */
+		np->stats.rx_crc_errors	+= readl(ioaddr + RxCRCErrs);
+		np->stats.rx_missed_errors	+= readl(ioaddr + RxMissed);
+	}
+
+	return &np->stats;
+}
+
+/* The little-endian AUTODIN II ethernet CRC calculations.
+   A big-endian version is also available.
+   This is slow but compact code.  Do not use this routine for bulk data,
+   use a table-based routine instead.
+   This is common code and should be moved to net/core/crc.c.
+   Chips may use the upper or lower CRC bits, and may reverse and/or invert
+   them.  Select the endian-ness that results in minimal calculations.
+*/
+static unsigned const ethernet_polynomial_le = 0xedb88320U;
+static inline unsigned ether_crc_le(int length, unsigned char *data)
+{
+	unsigned int crc = 0xffffffff;	/* Initial value. */
+	while(--length >= 0) {
+		unsigned char current_octet = *data++;
+		int bit;
+		for (bit = 8; --bit >= 0; current_octet >>= 1) {
+			if ((crc ^ current_octet) & 1) {
+				crc >>= 1;
+				crc ^= ethernet_polynomial_le;
+			} else
+				crc >>= 1;
+		}
+	}
+	return crc;
+}
+
+static void set_rx_mode(struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	u32 new_mc_filter[128];			/* Multicast filter table */
+	u32 new_rx_mode = np->rx_mode;
+
+	if (dev->flags & IFF_PROMISC) {			/* Set promiscuous. */
+		/* Unconditionally log net taps. */
+		printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name);
+		new_rx_mode |=
+			RxCtrlAcceptBroadcast | RxCtrlAllMulticast | RxCtrlAllUnicast;
+	} else if ((dev->mc_count > np->multicast_filter_limit)
+			   ||  (dev->flags & IFF_ALLMULTI)) {
+		/* Too many to match, or accept all multicasts. */
+		new_rx_mode &= ~RxCtrlAllUnicast;
+		new_rx_mode |= RxCtrlAcceptBroadcast | RxCtrlAllMulticast;
+	} else {
+		struct dev_mc_list *mclist;
+		int i;
+		memset(new_mc_filter, 0, sizeof(new_mc_filter));
+		for (i = 0, mclist = dev->mc_list; mclist && i < 15;
+			 i++, mclist = mclist->next) {
+			writel(((u32*)mclist->dmi_addr)[0], ioaddr + RxAddrCAM + 8 + i*8);
+			writel((((u32*)mclist->dmi_addr)[1] & 0xffff) | 0x80000000,
+				   ioaddr + RxAddrCAM + 12 + i*8);
+		}
+		for (; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
+			set_bit(((u32*)mclist->dmi_addr)[1] & 0xfff,
+					new_mc_filter);
+		}
+		new_rx_mode &= ~RxCtrlAllUnicast | RxCtrlAllMulticast;
+		new_rx_mode |= RxCtrlAcceptBroadcast;
+		if (dev->mc_count > 15)
+			for (i = 0; i < 128; i++)
+				writel(new_mc_filter[i], ioaddr + MulticastArray + (i<<2));
+	}
+	if (np->rx_mode != new_rx_mode)
+		writel(np->rx_mode = new_rx_mode, ioaddr + RxControl);
+}
+
+static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	u32 *data32 = (void *)&rq->ifr_data;
+
+	switch(cmd) {
+	case SIOCGPARAMS:
+		data32[0] = np->msg_level;
+		data32[1] = np->multicast_filter_limit;
+		data32[2] = np->max_interrupt_work;
+		data32[3] = np->rx_copybreak;
+		return 0;
+	case SIOCSPARAMS:
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+		np->msg_level = data32[0];
+		np->multicast_filter_limit = data32[1];
+		np->max_interrupt_work = data32[2];
+		np->rx_copybreak = data32[3];
+		return 0;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int netdev_close(struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	int i;
+
+	netif_stop_tx_queue(dev);
+
+	if (np->msg_level & NETIF_MSG_IFDOWN) {
+		printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %4.4x "
+			   "Rx %4.4x Int %2.2x.\n",
+			   dev->name, (int)readl(ioaddr + TxStatus),
+			   (int)readl(ioaddr + RxStatus), (int)readl(ioaddr + IntrStatus));
+		printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d,  Rx %d / %d.\n",
+			   dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx);
+	}
+
+	/* Disable interrupts by clearing the interrupt mask. */
+	writel(~0, ioaddr + IntrDisable);
+	readl(ioaddr + IntrStatus);
+
+	/* Reset everything. */
+	writel(0x04000000, ioaddr + ChipCtrl);
+
+	del_timer(&np->timer);
+
+#ifdef __i386__
+	if (np->msg_level & NETIF_MSG_IFDOWN) {
+		printk("\n"KERN_DEBUG"  Tx ring at %8.8x:\n",
+			   (int)virt_to_bus(np->tx_ring));
+		for (i = 0; i < TX_RING_SIZE; i++)
+			printk(" #%d desc. buf %8.8x, length %8.8x, status %8.8x.\n",
+				   i, np->tx_ring[i].buf_addr, np->tx_ring[i].cmd_length,
+				   np->tx_ring[i].status);
+		printk("\n"KERN_DEBUG "  Rx ring %8.8x:\n",
+			   (int)virt_to_bus(np->rx_ring));
+		for (i = 0; i < RX_RING_SIZE; i++) {
+			printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n",
+				   i, np->rx_ring[i].csum_length,
+				   np->rx_ring[i].status, np->rx_ring[i].buf_addr);
+			if (np->rx_ring[i].buf_addr) {
+				if (*(u8*)np->rx_skbuff[i]->tail != 0x69) {
+					u16 *pkt_buf = (void *)np->rx_skbuff[i]->tail;
+					int j;
+					for (j = 0; j < 0x50; j++)
+						printk(" %4.4x", pkt_buf[j]);
+					printk("\n");
+				}
+			}
+		}
+	}
+#endif /* __i386__ debugging only */
+
+	free_irq(dev->irq, dev);
+
+	/* Free all the skbuffs in the Rx queue. */
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		np->rx_ring[i].status = 0;
+		np->rx_ring[i].buf_addr = 0xBADF00D0; /* An invalid address. */
+		if (np->rx_skbuff[i]) {
+#if LINUX_VERSION_CODE < 0x20100
+			np->rx_skbuff[i]->free = 1;
+#endif
+			dev_free_skb(np->rx_skbuff[i]);
+		}
+		np->rx_skbuff[i] = 0;
+	}
+	for (i = 0; i < TX_RING_SIZE; i++) {
+		if (np->tx_skbuff[i])
+			dev_free_skb(np->tx_skbuff[i]);
+		np->tx_skbuff[i] = 0;
+	}
+
+	MOD_DEC_USE_COUNT;
+
+	return 0;
+}
+
+static int netdev_pwr_event(void *dev_instance, int event)
+{
+	struct net_device *dev = dev_instance;
+	struct netdev_private *np = (struct netdev_private *)dev->priv;
+	long ioaddr = dev->base_addr;
+
+	if (np->msg_level & NETIF_MSG_LINK)
+		printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event);
+	switch(event) {
+	case DRV_ATTACH:
+		MOD_INC_USE_COUNT;
+		break;
+	case DRV_SUSPEND:
+		/* Disable interrupts, stop Tx and Rx. */
+		writel(~0, ioaddr + IntrDisable);
+		/* writel(2, ioaddr + RxCmd); */
+		/* writew(2, ioaddr + TxCmd); */
+		break;
+	case DRV_RESUME:
+		/* This is incomplete: the actions are very chip specific. */
+		set_rx_mode(dev);
+		break;
+	case DRV_DETACH: {
+		struct net_device **devp, **next;
+		if (dev->flags & IFF_UP) {
+			/* Some, but not all, kernel versions close automatically. */
+			dev_close(dev);
+			dev->flags &= ~(IFF_UP|IFF_RUNNING);
+		}
+		unregister_netdev(dev);
+		release_region(dev->base_addr, pci_id_tbl[np->chip_id].io_size);
+		iounmap((char *)dev->base_addr);
+		for (devp = &root_net_dev; *devp; devp = next) {
+			next = &((struct netdev_private *)(*devp)->priv)->next_module;
+			if (*devp == dev) {
+				*devp = *next;
+				break;
+			}
+		}
+		if (np->priv_addr)
+			kfree(np->priv_addr);
+		kfree(dev);
+		MOD_DEC_USE_COUNT;
+		break;
+	}
+	}
+
+	return 0;
+}
+
+
+#ifdef MODULE
+int init_module(void)
+{
+	/* Emit version even if no cards detected. */
+	printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
+	return pci_drv_register(&igige_drv_id, NULL);
+}
+
+void cleanup_module(void)
+{
+	struct net_device *next_dev;
+
+	pci_drv_unregister(&igige_drv_id);
+
+	/* No need to check MOD_IN_USE, as sys_delete_module() checks. */
+	while (root_net_dev) {
+		struct netdev_private *np = (void *)(root_net_dev->priv);
+		unregister_netdev(root_net_dev);
+		release_region(root_net_dev->base_addr,
+					   pci_id_tbl[np->chip_id].io_size);
+		iounmap((char *)(root_net_dev->base_addr));
+		next_dev = np->next_module;
+		if (np->tx_ring == 0)
+			free_page((long)np->tx_ring);
+		if (np->rx_ring == 0)
+			free_page((long)np->rx_ring);
+		if (np->priv_addr)
+			kfree(np->priv_addr);
+		kfree(root_net_dev);
+		root_net_dev = next_dev;
+	}
+}
+
+#endif  /* MODULE */
+
+/*
+ * Local variables:
+ *  compile-command: "make KERNVER=`uname -r` intel-gige.o"
+ *  compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c intel-gige.c"
+ *  simple-compile-command: "gcc -DMODULE -O6 -c intel-gige.c"
+ *  c-indent-level: 4
+ *  c-basic-offset: 4
+ *  tab-width: 4
+ * End:
+ */