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, 1622 insertions, 0 deletions

diff --git a/drivers/net/3c509.c b/drivers/net/3c509.c
new file mode 100644
index 00000000000..e843109d4f6
--- /dev/null
+++ b/drivers/net/3c509.c
@@ -0,0 +1,1622 @@
+/* 3c509.c: A 3c509 EtherLink3 ethernet driver for linux. */
+/*
+	Written 1993-2000 by Donald Becker.
+
+	Copyright 1994-2000 by Donald Becker.
+	Copyright 1993 United States Government as represented by the
+	Director, National Security Agency.	 This software may be used and
+	distributed according to the terms of the GNU General Public License,
+	incorporated herein by reference.
+
+	This driver is for the 3Com EtherLinkIII series.
+
+	The author may be reached as becker@scyld.com, or C/O
+	Scyld Computing Corporation
+	410 Severn Ave., Suite 210
+	Annapolis MD 21403
+
+	Known limitations:
+	Because of the way 3c509 ISA detection works it's difficult to predict
+	a priori which of several ISA-mode cards will be detected first.
+
+	This driver does not use predictive interrupt mode, resulting in higher
+	packet latency but lower overhead.  If interrupts are disabled for an
+	unusually long time it could also result in missed packets, but in
+	practice this rarely happens.
+
+
+	FIXES:
+		Alan Cox:       Removed the 'Unexpected interrupt' bug.
+		Michael Meskes:	Upgraded to Donald Becker's version 1.07.
+		Alan Cox:	Increased the eeprom delay. Regardless of 
+				what the docs say some people definitely
+				get problems with lower (but in card spec)
+				delays
+		v1.10 4/21/97 Fixed module code so that multiple cards may be detected,
+				other cleanups.  -djb
+		Andrea Arcangeli:	Upgraded to Donald Becker's version 1.12.
+		Rick Payne:	Fixed SMP race condition
+		v1.13 9/8/97 Made 'max_interrupt_work' an insmod-settable variable -djb
+		v1.14 10/15/97 Avoided waiting..discard message for fast machines -djb
+		v1.15 1/31/98 Faster recovery for Tx errors. -djb
+		v1.16 2/3/98 Different ID port handling to avoid sound cards. -djb
+		v1.18 12Mar2001 Andrew Morton <andrewm@uow.edu.au>
+			- Avoid bogus detect of 3c590's (Andrzej Krzysztofowicz)
+			- Reviewed against 1.18 from scyld.com
+		v1.18a 17Nov2001 Jeff Garzik <jgarzik@pobox.com>
+			- ethtool support
+		v1.18b 1Mar2002 Zwane Mwaikambo <zwane@commfireservices.com>
+			- Power Management support
+		v1.18c 1Mar2002 David Ruggiero <jdr@farfalle.com>
+			- Full duplex support
+		v1.19  16Oct2002 Zwane Mwaikambo <zwane@linuxpower.ca>
+			- Additional ethtool features
+		v1.19a 28Oct2002 Davud Ruggiero <jdr@farfalle.com>
+			- Increase *read_eeprom udelay to workaround oops with 2 cards.
+		v1.19b 08Nov2002 Marc Zyngier <maz@wild-wind.fr.eu.org>
+		    - Introduce driver model for EISA cards.
+*/
+
+#define DRV_NAME	"3c509"
+#define DRV_VERSION	"1.19b"
+#define DRV_RELDATE	"08Nov2002"
+
+/* A few values that may be tweaked. */
+
+/* Time in jiffies before concluding the transmitter is hung. */
+#define TX_TIMEOUT  (400*HZ/1000)
+/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
+static int max_interrupt_work = 10;
+
+#include <linux/config.h>
+#include <linux/module.h>
+#ifdef CONFIG_MCA
+#include <linux/mca.h>
+#endif
+#include <linux/isapnp.h>
+#include <linux/string.h>
+#include <linux/interrupt.h>
+#include <linux/errno.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/pm.h>
+#include <linux/skbuff.h>
+#include <linux/delay.h>	/* for udelay() */
+#include <linux/spinlock.h>
+#include <linux/ethtool.h>
+#include <linux/device.h>
+#include <linux/eisa.h>
+#include <linux/bitops.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+static char versionA[] __initdata = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@scyld.com\n";
+static char versionB[] __initdata = "http://www.scyld.com/network/3c509.html\n";
+
+#ifdef EL3_DEBUG
+static int el3_debug = EL3_DEBUG;
+#else
+static int el3_debug = 2;
+#endif
+
+/* Used to do a global count of all the cards in the system.  Must be
+ * a global variable so that the mca/eisa probe routines can increment
+ * it */
+static int el3_cards = 0;
+
+/* To minimize the size of the driver source I only define operating
+   constants if they are used several times.  You'll need the manual
+   anyway if you want to understand driver details. */
+/* Offsets from base I/O address. */
+#define EL3_DATA 0x00
+#define EL3_CMD 0x0e
+#define EL3_STATUS 0x0e
+#define	 EEPROM_READ 0x80
+
+#define EL3_IO_EXTENT	16
+
+#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
+
+
+/* The top five bits written to EL3_CMD are a command, the lower
+   11 bits are the parameter, if applicable. */
+enum c509cmd {
+	TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
+	RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
+	TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
+	FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
+	SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
+	SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
+	StatsDisable = 22<<11, StopCoax = 23<<11, PowerUp = 27<<11,
+	PowerDown = 28<<11, PowerAuto = 29<<11};
+
+enum c509status {
+	IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
+	TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
+	IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000, };
+
+/* The SetRxFilter command accepts the following classes: */
+enum RxFilter {
+	RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };
+
+/* Register window 1 offsets, the window used in normal operation. */
+#define TX_FIFO		0x00
+#define RX_FIFO		0x00
+#define RX_STATUS 	0x08
+#define TX_STATUS 	0x0B
+#define TX_FREE		0x0C		/* Remaining free bytes in Tx buffer. */
+
+#define WN0_CONF_CTRL	0x04		/* Window 0: Configuration control register */
+#define WN0_ADDR_CONF	0x06		/* Window 0: Address configuration register */
+#define WN0_IRQ		0x08		/* Window 0: Set IRQ line in bits 12-15. */
+#define WN4_MEDIA	0x0A		/* Window 4: Various transcvr/media bits. */
+#define	MEDIA_TP	0x00C0		/* Enable link beat and jabber for 10baseT. */
+#define WN4_NETDIAG	0x06		/* Window 4: Net diagnostic */
+#define FD_ENABLE	0x8000		/* Enable full-duplex ("external loopback") */  
+
+/*
+ * Must be a power of two (we use a binary and in the
+ * circular queue)
+ */
+#define SKB_QUEUE_SIZE	64
+
+struct el3_private {
+	struct net_device_stats stats;
+	struct net_device *next_dev;
+	spinlock_t lock;
+	/* skb send-queue */
+	int head, size;
+	struct sk_buff *queue[SKB_QUEUE_SIZE];
+#ifdef CONFIG_PM
+	struct pm_dev *pmdev;
+#endif
+	enum {
+		EL3_MCA,
+		EL3_PNP,
+		EL3_EISA,
+	} type;						/* type of device */
+	struct device *dev;
+};
+static int id_port __initdata = 0x110;	/* Start with 0x110 to avoid new sound cards.*/
+static struct net_device *el3_root_dev;
+
+static ushort id_read_eeprom(int index);
+static ushort read_eeprom(int ioaddr, int index);
+static int el3_open(struct net_device *dev);
+static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static void update_stats(struct net_device *dev);
+static struct net_device_stats *el3_get_stats(struct net_device *dev);
+static int el3_rx(struct net_device *dev);
+static int el3_close(struct net_device *dev);
+static void set_multicast_list(struct net_device *dev);
+static void el3_tx_timeout (struct net_device *dev);
+static void el3_down(struct net_device *dev);
+static void el3_up(struct net_device *dev);
+static struct ethtool_ops ethtool_ops;
+#ifdef CONFIG_PM
+static int el3_suspend(struct pm_dev *pdev);
+static int el3_resume(struct pm_dev *pdev);
+static int el3_pm_callback(struct pm_dev *pdev, pm_request_t rqst, void *data);
+#endif
+/* generic device remove for all device types */
+#if defined(CONFIG_EISA) || defined(CONFIG_MCA)
+static int el3_device_remove (struct device *device);
+#endif
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void el3_poll_controller(struct net_device *dev);
+#endif
+
+#ifdef CONFIG_EISA
+static struct eisa_device_id el3_eisa_ids[] = {
+		{ "TCM5092" },
+		{ "TCM5093" },
+		{ "" }
+};
+
+static int el3_eisa_probe (struct device *device);
+
+static struct eisa_driver el3_eisa_driver = {
+		.id_table = el3_eisa_ids,
+		.driver   = {
+				.name    = "3c509",
+				.probe   = el3_eisa_probe,
+				.remove  = __devexit_p (el3_device_remove)
+		}
+};
+#endif
+
+#ifdef CONFIG_MCA
+static int el3_mca_probe(struct device *dev);
+
+static short el3_mca_adapter_ids[] __initdata = {
+		0x627c,
+		0x627d,
+		0x62db,
+		0x62f6,
+		0x62f7,
+		0x0000
+};
+
+static char *el3_mca_adapter_names[] __initdata = {
+		"3Com 3c529 EtherLink III (10base2)",
+		"3Com 3c529 EtherLink III (10baseT)",
+		"3Com 3c529 EtherLink III (test mode)",
+		"3Com 3c529 EtherLink III (TP or coax)",
+		"3Com 3c529 EtherLink III (TP)",
+		NULL
+};
+
+static struct mca_driver el3_mca_driver = {
+		.id_table = el3_mca_adapter_ids,
+		.driver = {
+				.name = "3c529",
+				.bus = &mca_bus_type,
+				.probe = el3_mca_probe,
+				.remove = __devexit_p(el3_device_remove),
+		},
+};
+#endif /* CONFIG_MCA */
+
+#if defined(__ISAPNP__)
+static struct isapnp_device_id el3_isapnp_adapters[] __initdata = {
+	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+		ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5090),
+		(long) "3Com Etherlink III (TP)" },
+	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+		ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5091),
+		(long) "3Com Etherlink III" },
+	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+		ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5094),
+		(long) "3Com Etherlink III (combo)" },
+	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+		ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5095),
+		(long) "3Com Etherlink III (TPO)" },
+	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+		ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5098),
+		(long) "3Com Etherlink III (TPC)" },
+	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+		ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_FUNCTION(0x80f7),
+		(long) "3Com Etherlink III compatible" },
+	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+		ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_FUNCTION(0x80f8),
+		(long) "3Com Etherlink III compatible" },
+	{ }	/* terminate list */
+};
+
+static u16 el3_isapnp_phys_addr[8][3];
+static int nopnp;
+#endif /* __ISAPNP__ */
+
+/* With the driver model introduction for EISA devices, both init
+ * and cleanup have been split :
+ * - EISA devices probe/remove starts in el3_eisa_probe/el3_device_remove
+ * - MCA/ISA still use el3_probe
+ *
+ * Both call el3_common_init/el3_common_remove. */
+
+static int __init el3_common_init(struct net_device *dev)
+{
+	struct el3_private *lp = netdev_priv(dev);
+	short i;
+	int err;
+
+	spin_lock_init(&lp->lock);
+
+	if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */
+		dev->if_port = (dev->mem_start & 0x0f);
+	} else { /* xcvr codes 0/8 */
+		/* use eeprom value, but save user's full-duplex selection */
+		dev->if_port |= (dev->mem_start & 0x08);
+	}
+
+	/* The EL3-specific entries in the device structure. */
+	dev->open = &el3_open;
+	dev->hard_start_xmit = &el3_start_xmit;
+	dev->stop = &el3_close;
+	dev->get_stats = &el3_get_stats;
+	dev->set_multicast_list = &set_multicast_list;
+	dev->tx_timeout = el3_tx_timeout;
+	dev->watchdog_timeo = TX_TIMEOUT;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = el3_poll_controller;
+#endif
+	SET_ETHTOOL_OPS(dev, &ethtool_ops);
+
+	err = register_netdev(dev);
+	if (err) {
+		printk(KERN_ERR "Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n",
+			dev->base_addr, dev->irq);
+		release_region(dev->base_addr, EL3_IO_EXTENT);
+		return err;
+	}
+
+	{
+		const char *if_names[] = {"10baseT", "AUI", "undefined", "BNC"};
+		printk("%s: 3c5x9 found at %#3.3lx, %s port, address ",
+			dev->name, dev->base_addr, 
+			if_names[(dev->if_port & 0x03)]);
+	}
+
+	/* Read in the station address. */
+	for (i = 0; i < 6; i++)
+		printk(" %2.2x", dev->dev_addr[i]);
+	printk(", IRQ %d.\n", dev->irq);
+
+	if (el3_debug > 0)
+		printk(KERN_INFO "%s" KERN_INFO "%s", versionA, versionB);
+	return 0;
+
+}
+
+static void el3_common_remove (struct net_device *dev)
+{
+	struct el3_private *lp = netdev_priv(dev);
+
+	(void) lp;				/* Keep gcc quiet... */
+#ifdef CONFIG_PM
+	if (lp->pmdev)
+		pm_unregister(lp->pmdev);
+#endif
+#if defined(__ISAPNP__)
+	if (lp->type == EL3_PNP)
+		pnp_device_detach(to_pnp_dev(lp->dev));
+#endif
+
+	unregister_netdev (dev);
+	release_region(dev->base_addr, EL3_IO_EXTENT);
+	free_netdev (dev);
+}
+
+static int __init el3_probe(int card_idx)
+{
+	struct net_device *dev;
+	struct el3_private *lp;
+	short lrs_state = 0xff, i;
+	int ioaddr, irq, if_port;
+	u16 phys_addr[3];
+	static int current_tag;
+	int err = -ENODEV;
+#if defined(__ISAPNP__)
+	static int pnp_cards;
+	struct pnp_dev *idev = NULL;
+
+	if (nopnp == 1)
+		goto no_pnp;
+
+	for (i=0; el3_isapnp_adapters[i].vendor != 0; i++) {
+		int j;
+		while ((idev = pnp_find_dev(NULL,
+					    el3_isapnp_adapters[i].vendor,
+					    el3_isapnp_adapters[i].function,
+					    idev))) {
+			if (pnp_device_attach(idev) < 0)
+				continue;
+			if (pnp_activate_dev(idev) < 0) {
+__again:
+				pnp_device_detach(idev);
+				continue;
+			}
+			if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0))
+				goto __again;
+			ioaddr = pnp_port_start(idev, 0);
+			if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509 PnP")) {
+				pnp_device_detach(idev);
+				return -EBUSY;
+			}
+			irq = pnp_irq(idev, 0);
+			if (el3_debug > 3)
+				printk ("ISAPnP reports %s at i/o 0x%x, irq %d\n",
+					(char*) el3_isapnp_adapters[i].driver_data, ioaddr, irq);
+			EL3WINDOW(0);
+			for (j = 0; j < 3; j++)
+				el3_isapnp_phys_addr[pnp_cards][j] =
+					phys_addr[j] =
+						htons(read_eeprom(ioaddr, j));
+			if_port = read_eeprom(ioaddr, 8) >> 14;
+			dev = alloc_etherdev(sizeof (struct el3_private));
+			if (!dev) {
+					release_region(ioaddr, EL3_IO_EXTENT);
+					pnp_device_detach(idev);
+					return -ENOMEM;
+			}
+
+			SET_MODULE_OWNER(dev);
+			SET_NETDEV_DEV(dev, &idev->dev);
+			pnp_cards++;
+
+			netdev_boot_setup_check(dev);
+			goto found;
+		}
+	}
+no_pnp:
+#endif /* __ISAPNP__ */
+
+	/* Select an open I/O location at 0x1*0 to do contention select. */
+	for ( ; id_port < 0x200; id_port += 0x10) {
+		if (!request_region(id_port, 1, "3c509"))
+			continue;
+		outb(0x00, id_port);
+		outb(0xff, id_port);
+		if (inb(id_port) & 0x01){
+			release_region(id_port, 1);
+			break;
+		} else
+			release_region(id_port, 1);
+	}
+	if (id_port >= 0x200) {
+		/* Rare -- do we really need a warning? */
+		printk(" WARNING: No I/O port available for 3c509 activation.\n");
+		return -ENODEV;
+	}
+
+	/* Next check for all ISA bus boards by sending the ID sequence to the
+	   ID_PORT.  We find cards past the first by setting the 'current_tag'
+	   on cards as they are found.  Cards with their tag set will not
+	   respond to subsequent ID sequences. */
+
+	outb(0x00, id_port);
+	outb(0x00, id_port);
+	for(i = 0; i < 255; i++) {
+		outb(lrs_state, id_port);
+		lrs_state <<= 1;
+		lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state;
+	}
+
+	/* For the first probe, clear all board's tag registers. */
+	if (current_tag == 0)
+		outb(0xd0, id_port);
+	else				/* Otherwise kill off already-found boards. */
+		outb(0xd8, id_port);
+
+	if (id_read_eeprom(7) != 0x6d50) {
+		return -ENODEV;
+	}
+
+	/* Read in EEPROM data, which does contention-select.
+	   Only the lowest address board will stay "on-line".
+	   3Com got the byte order backwards. */
+	for (i = 0; i < 3; i++) {
+		phys_addr[i] = htons(id_read_eeprom(i));
+	}
+
+#if defined(__ISAPNP__)
+	if (nopnp == 0) {
+		/* The ISA PnP 3c509 cards respond to the ID sequence.
+		   This check is needed in order not to register them twice. */
+		for (i = 0; i < pnp_cards; i++) {
+			if (phys_addr[0] == el3_isapnp_phys_addr[i][0] &&
+			    phys_addr[1] == el3_isapnp_phys_addr[i][1] &&
+			    phys_addr[2] == el3_isapnp_phys_addr[i][2])
+			{
+				if (el3_debug > 3)
+					printk("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n",
+						phys_addr[0] & 0xff, phys_addr[0] >> 8,
+						phys_addr[1] & 0xff, phys_addr[1] >> 8,
+						phys_addr[2] & 0xff, phys_addr[2] >> 8);
+				/* Set the adaptor tag so that the next card can be found. */
+				outb(0xd0 + ++current_tag, id_port);
+				goto no_pnp;
+			}
+		}
+	}
+#endif /* __ISAPNP__ */
+
+	{
+		unsigned int iobase = id_read_eeprom(8);
+		if_port = iobase >> 14;
+		ioaddr = 0x200 + ((iobase & 0x1f) << 4);
+	}
+	irq = id_read_eeprom(9) >> 12;
+
+	dev = alloc_etherdev(sizeof (struct el3_private));
+	if (!dev)
+		return -ENOMEM;
+
+	SET_MODULE_OWNER(dev);
+
+	netdev_boot_setup_check(dev);
+	
+	/* Set passed-in IRQ or I/O Addr. */
+	if (dev->irq > 1  &&  dev->irq < 16)
+			irq = dev->irq;
+
+	if (dev->base_addr) {
+		if (dev->mem_end == 0x3c509 	/* Magic key */
+		    && dev->base_addr >= 0x200  &&  dev->base_addr <= 0x3e0)
+			ioaddr = dev->base_addr & 0x3f0;
+		else if (dev->base_addr != ioaddr)
+			goto out;
+	}
+
+	if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509")) {
+		err = -EBUSY;
+		goto out;
+	}
+
+	/* Set the adaptor tag so that the next card can be found. */
+	outb(0xd0 + ++current_tag, id_port);
+
+	/* Activate the adaptor at the EEPROM location. */
+	outb((ioaddr >> 4) | 0xe0, id_port);
+
+	EL3WINDOW(0);
+	if (inw(ioaddr) != 0x6d50)
+		goto out1;
+
+	/* Free the interrupt so that some other card can use it. */
+	outw(0x0f00, ioaddr + WN0_IRQ);
+
+#if defined(__ISAPNP__)
+ found:							/* PNP jumps here... */
+#endif /* __ISAPNP__ */
+
+	memcpy(dev->dev_addr, phys_addr, sizeof(phys_addr));
+	dev->base_addr = ioaddr;
+	dev->irq = irq;
+	dev->if_port = if_port;
+	lp = netdev_priv(dev);
+#if defined(__ISAPNP__)
+	lp->dev = &idev->dev;
+#endif
+	err = el3_common_init(dev);
+
+	if (err)
+		goto out1;
+
+#ifdef CONFIG_PM
+	/* register power management */
+	lp->pmdev = pm_register(PM_ISA_DEV, card_idx, el3_pm_callback);
+	if (lp->pmdev) {
+		struct pm_dev *p;
+		p = lp->pmdev;
+		p->data = (struct net_device *)dev;
+	}
+#endif
+
+	el3_cards++;
+	lp->next_dev = el3_root_dev;
+	el3_root_dev = dev;
+	return 0;
+
+out1:
+#if defined(__ISAPNP__)
+	if (idev)
+		pnp_device_detach(idev);
+#endif
+out:
+	free_netdev(dev);
+	return err;
+}
+
+#ifdef CONFIG_MCA
+static int __init el3_mca_probe(struct device *device)
+{
+	/* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch,
+	 * heavily modified by Chris Beauregard
+	 * (cpbeaure@csclub.uwaterloo.ca) to support standard MCA
+	 * probing.
+	 *
+	 * redone for multi-card detection by ZP Gu (zpg@castle.net)
+	 * now works as a module */
+
+	struct el3_private *lp;
+	short i;
+	int ioaddr, irq, if_port;
+	u16 phys_addr[3];
+	struct net_device *dev = NULL;
+	u_char pos4, pos5;
+	struct mca_device *mdev = to_mca_device(device);
+	int slot = mdev->slot;
+	int err;
+
+	pos4 = mca_device_read_stored_pos(mdev, 4);
+	pos5 = mca_device_read_stored_pos(mdev, 5);
+
+	ioaddr = ((short)((pos4&0xfc)|0x02)) << 8;
+	irq = pos5 & 0x0f;
+
+
+	printk("3c529: found %s at slot %d\n",
+		   el3_mca_adapter_names[mdev->index], slot + 1);
+
+	/* claim the slot */
+	strncpy(mdev->name, el3_mca_adapter_names[mdev->index],
+			sizeof(mdev->name));
+	mca_device_set_claim(mdev, 1);
+
+	if_port = pos4 & 0x03;
+
+	irq = mca_device_transform_irq(mdev, irq);
+	ioaddr = mca_device_transform_ioport(mdev, ioaddr); 
+	if (el3_debug > 2) {
+			printk("3c529: irq %d  ioaddr 0x%x  ifport %d\n", irq, ioaddr, if_port);
+	}
+	EL3WINDOW(0);
+	for (i = 0; i < 3; i++) {
+			phys_addr[i] = htons(read_eeprom(ioaddr, i));
+	}
+
+	dev = alloc_etherdev(sizeof (struct el3_private));
+	if (dev == NULL) {
+			release_region(ioaddr, EL3_IO_EXTENT);
+			return -ENOMEM;
+	}
+
+	SET_MODULE_OWNER(dev);
+	netdev_boot_setup_check(dev);
+
+	memcpy(dev->dev_addr, phys_addr, sizeof(phys_addr));
+	dev->base_addr = ioaddr;
+	dev->irq = irq;
+	dev->if_port = if_port;
+	lp = netdev_priv(dev);
+	lp->dev = device;
+	lp->type = EL3_MCA;
+	device->driver_data = dev;
+	err = el3_common_init(dev);
+
+	if (err) {
+		device->driver_data = NULL;
+		free_netdev(dev);
+		return -ENOMEM;
+	}
+
+	el3_cards++;
+	return 0;
+}
+		
+#endif /* CONFIG_MCA */
+
+#ifdef CONFIG_EISA
+static int __init el3_eisa_probe (struct device *device)
+{
+	struct el3_private *lp;
+	short i;
+	int ioaddr, irq, if_port;
+	u16 phys_addr[3];
+	struct net_device *dev = NULL;
+	struct eisa_device *edev;
+	int err;
+
+	/* Yeepee, The driver framework is calling us ! */
+	edev = to_eisa_device (device);
+	ioaddr = edev->base_addr;
+	
+	if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509"))
+		return -EBUSY;
+
+	/* Change the register set to the configuration window 0. */
+	outw(SelectWindow | 0, ioaddr + 0xC80 + EL3_CMD);
+
+	irq = inw(ioaddr + WN0_IRQ) >> 12;
+	if_port = inw(ioaddr + 6)>>14;
+	for (i = 0; i < 3; i++)
+		phys_addr[i] = htons(read_eeprom(ioaddr, i));
+
+	/* Restore the "Product ID" to the EEPROM read register. */
+	read_eeprom(ioaddr, 3);
+
+	dev = alloc_etherdev(sizeof (struct el3_private));
+	if (dev == NULL) {
+		release_region(ioaddr, EL3_IO_EXTENT);
+		return -ENOMEM;
+	}
+
+	SET_MODULE_OWNER(dev);
+
+	netdev_boot_setup_check(dev);
+
+	memcpy(dev->dev_addr, phys_addr, sizeof(phys_addr));
+	dev->base_addr = ioaddr;
+	dev->irq = irq;
+	dev->if_port = if_port;
+	lp = netdev_priv(dev);
+	lp->dev = device;
+	lp->type = EL3_EISA;
+	eisa_set_drvdata (edev, dev);
+	err = el3_common_init(dev);
+
+	if (err) {
+		eisa_set_drvdata (edev, NULL);
+		free_netdev(dev);
+		return err;
+	}
+
+	el3_cards++;
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_EISA) || defined(CONFIG_MCA)
+/* This remove works for all device types.
+ *
+ * The net dev must be stored in the driver_data field */
+static int __devexit el3_device_remove (struct device *device)
+{
+	struct net_device *dev;
+
+	dev  = device->driver_data;
+
+	el3_common_remove (dev);
+	return 0;
+}
+#endif
+
+/* Read a word from the EEPROM using the regular EEPROM access register.
+   Assume that we are in register window zero.
+ */
+static ushort read_eeprom(int ioaddr, int index)
+{
+	outw(EEPROM_READ + index, ioaddr + 10);
+	/* Pause for at least 162 us. for the read to take place. 
+	   Some chips seem to require much longer */
+	mdelay(2);
+	return inw(ioaddr + 12);
+}
+
+/* Read a word from the EEPROM when in the ISA ID probe state. */
+static ushort __init id_read_eeprom(int index)
+{
+	int bit, word = 0;
+
+	/* Issue read command, and pause for at least 162 us. for it to complete.
+	   Assume extra-fast 16Mhz bus. */
+	outb(EEPROM_READ + index, id_port);
+
+	/* Pause for at least 162 us. for the read to take place. */
+	/* Some chips seem to require much longer */
+	mdelay(4);
+	
+	for (bit = 15; bit >= 0; bit--)
+		word = (word << 1) + (inb(id_port) & 0x01);
+
+	if (el3_debug > 3)
+		printk("  3c509 EEPROM word %d %#4.4x.\n", index, word);
+
+	return word;
+}
+
+
+static int
+el3_open(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+	int i;
+
+	outw(TxReset, ioaddr + EL3_CMD);
+	outw(RxReset, ioaddr + EL3_CMD);
+	outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
+
+	i = request_irq(dev->irq, &el3_interrupt, 0, dev->name, dev);
+	if (i)
+		return i;
+
+	EL3WINDOW(0);
+	if (el3_debug > 3)
+		printk("%s: Opening, IRQ %d	 status@%x %4.4x.\n", dev->name,
+			   dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS));
+
+	el3_up(dev);
+
+	if (el3_debug > 3)
+		printk("%s: Opened 3c509  IRQ %d  status %4.4x.\n",
+			   dev->name, dev->irq, inw(ioaddr + EL3_STATUS));
+
+	return 0;
+}
+
+static void
+el3_tx_timeout (struct net_device *dev)
+{
+	struct el3_private *lp = netdev_priv(dev);
+	int ioaddr = dev->base_addr;
+
+	/* Transmitter timeout, serious problems. */
+	printk("%s: transmit timed out, Tx_status %2.2x status %4.4x "
+		   "Tx FIFO room %d.\n",
+		   dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS),
+		   inw(ioaddr + TX_FREE));
+	lp->stats.tx_errors++;
+	dev->trans_start = jiffies;
+	/* Issue TX_RESET and TX_START commands. */
+	outw(TxReset, ioaddr + EL3_CMD);
+	outw(TxEnable, ioaddr + EL3_CMD);
+	netif_wake_queue(dev);
+}
+
+
+static int
+el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct el3_private *lp = netdev_priv(dev);
+	int ioaddr = dev->base_addr;
+	unsigned long flags;
+
+	netif_stop_queue (dev);
+
+	lp->stats.tx_bytes += skb->len;
+	
+	if (el3_debug > 4) {
+		printk("%s: el3_start_xmit(length = %u) called, status %4.4x.\n",
+			   dev->name, skb->len, inw(ioaddr + EL3_STATUS));
+	}
+#if 0
+#ifndef final_version
+	{	/* Error-checking code, delete someday. */
+		ushort status = inw(ioaddr + EL3_STATUS);
+		if (status & 0x0001 		/* IRQ line active, missed one. */
+			&& inw(ioaddr + EL3_STATUS) & 1) { 			/* Make sure. */
+			printk("%s: Missed interrupt, status then %04x now %04x"
+				   "  Tx %2.2x Rx %4.4x.\n", dev->name, status,
+				   inw(ioaddr + EL3_STATUS), inb(ioaddr + TX_STATUS),
+				   inw(ioaddr + RX_STATUS));
+			/* Fake interrupt trigger by masking, acknowledge interrupts. */
+			outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
+			outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
+				 ioaddr + EL3_CMD);
+			outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
+		}
+	}
+#endif
+#endif
+	/*
+	 *	We lock the driver against other processors. Note
+	 *	we don't need to lock versus the IRQ as we suspended
+	 *	that. This means that we lose the ability to take
+	 *	an RX during a TX upload. That sucks a bit with SMP
+	 *	on an original 3c509 (2K buffer)
+	 *
+	 *	Using disable_irq stops us crapping on other
+	 *	time sensitive devices.
+	 */
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	/* Put out the doubleword header... */
+	outw(skb->len, ioaddr + TX_FIFO);
+	outw(0x00, ioaddr + TX_FIFO);
+	/* ... and the packet rounded to a doubleword. */
+#ifdef  __powerpc__
+	outsl_ns(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
+#else
+	outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
+#endif
+
+	dev->trans_start = jiffies;
+	if (inw(ioaddr + TX_FREE) > 1536)
+		netif_start_queue(dev);
+	else
+		/* Interrupt us when the FIFO has room for max-sized packet. */
+		outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	dev_kfree_skb (skb);
+
+	/* Clear the Tx status stack. */
+	{
+		short tx_status;
+		int i = 4;
+
+		while (--i > 0	&&	(tx_status = inb(ioaddr + TX_STATUS)) > 0) {
+			if (tx_status & 0x38) lp->stats.tx_aborted_errors++;
+			if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
+			if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
+			outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
+		}
+	}
+	return 0;
+}
+
+/* The EL3 interrupt handler. */
+static irqreturn_t
+el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct net_device *dev = (struct net_device *)dev_id;
+	struct el3_private *lp;
+	int ioaddr, status;
+	int i = max_interrupt_work;
+
+	if (dev == NULL) {
+		printk ("el3_interrupt(): irq %d for unknown device.\n", irq);
+		return IRQ_NONE;
+	}
+
+	lp = netdev_priv(dev);
+	spin_lock(&lp->lock);
+
+	ioaddr = dev->base_addr;
+
+	if (el3_debug > 4) {
+		status = inw(ioaddr + EL3_STATUS);
+		printk("%s: interrupt, status %4.4x.\n", dev->name, status);
+	}
+
+	while ((status = inw(ioaddr + EL3_STATUS)) &
+		   (IntLatch | RxComplete | StatsFull)) {
+
+		if (status & RxComplete)
+			el3_rx(dev);
+
+		if (status & TxAvailable) {
+			if (el3_debug > 5)
+				printk("	TX room bit was handled.\n");
+			/* There's room in the FIFO for a full-sized packet. */
+			outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
+			netif_wake_queue (dev);
+		}
+		if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) {
+			/* Handle all uncommon interrupts. */
+			if (status & StatsFull)				/* Empty statistics. */
+				update_stats(dev);
+			if (status & RxEarly) {				/* Rx early is unused. */
+				el3_rx(dev);
+				outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
+			}
+			if (status & TxComplete) {			/* Really Tx error. */
+				struct el3_private *lp = netdev_priv(dev);
+				short tx_status;
+				int i = 4;
+
+				while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
+					if (tx_status & 0x38) lp->stats.tx_aborted_errors++;
+					if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
+					if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
+					outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
+				}
+			}
+			if (status & AdapterFailure) {
+				/* Adapter failure requires Rx reset and reinit. */
+				outw(RxReset, ioaddr + EL3_CMD);
+				/* Set the Rx filter to the current state. */
+				outw(SetRxFilter | RxStation | RxBroadcast
+					 | (dev->flags & IFF_ALLMULTI ? RxMulticast : 0)
+					 | (dev->flags & IFF_PROMISC ? RxProm : 0),
+					 ioaddr + EL3_CMD);
+				outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
+				outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
+			}
+		}
+
+		if (--i < 0) {
+			printk("%s: Infinite loop in interrupt, status %4.4x.\n",
+				   dev->name, status);
+			/* Clear all interrupts. */
+			outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
+			break;
+		}
+		/* Acknowledge the IRQ. */
+		outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */
+	}
+
+	if (el3_debug > 4) {
+		printk("%s: exiting interrupt, status %4.4x.\n", dev->name,
+			   inw(ioaddr + EL3_STATUS));
+	}
+	spin_unlock(&lp->lock);
+	return IRQ_HANDLED;
+}
+
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void el3_poll_controller(struct net_device *dev)
+{
+	disable_irq(dev->irq);
+	el3_interrupt(dev->irq, dev, NULL);
+	enable_irq(dev->irq);
+}
+#endif
+
+static struct net_device_stats *
+el3_get_stats(struct net_device *dev)
+{
+	struct el3_private *lp = netdev_priv(dev);
+	unsigned long flags;
+
+	/*
+	 *	This is fast enough not to bother with disable IRQ
+	 *	stuff.
+	 */
+	 
+	spin_lock_irqsave(&lp->lock, flags);
+	update_stats(dev);
+	spin_unlock_irqrestore(&lp->lock, flags);
+	return &lp->stats;
+}
+
+/*  Update statistics.  We change to register window 6, so this should be run
+	single-threaded if the device is active. This is expected to be a rare
+	operation, and it's simpler for the rest of the driver to assume that
+	window 1 is always valid rather than use a special window-state variable.
+	*/
+static void update_stats(struct net_device *dev)
+{
+	struct el3_private *lp = netdev_priv(dev);
+	int ioaddr = dev->base_addr;
+
+	if (el3_debug > 5)
+		printk("   Updating the statistics.\n");
+	/* Turn off statistics updates while reading. */
+	outw(StatsDisable, ioaddr + EL3_CMD);
+	/* Switch to the stats window, and read everything. */
+	EL3WINDOW(6);
+	lp->stats.tx_carrier_errors 	+= inb(ioaddr + 0);
+	lp->stats.tx_heartbeat_errors	+= inb(ioaddr + 1);
+	/* Multiple collisions. */	   inb(ioaddr + 2);
+	lp->stats.collisions		+= inb(ioaddr + 3);
+	lp->stats.tx_window_errors	+= inb(ioaddr + 4);
+	lp->stats.rx_fifo_errors	+= inb(ioaddr + 5);
+	lp->stats.tx_packets		+= inb(ioaddr + 6);
+	/* Rx packets	*/		   inb(ioaddr + 7);
+	/* Tx deferrals */		   inb(ioaddr + 8);
+	inw(ioaddr + 10);	/* Total Rx and Tx octets. */
+	inw(ioaddr + 12);
+
+	/* Back to window 1, and turn statistics back on. */
+	EL3WINDOW(1);
+	outw(StatsEnable, ioaddr + EL3_CMD);
+	return;
+}
+
+static int
+el3_rx(struct net_device *dev)
+{
+	struct el3_private *lp = netdev_priv(dev);
+	int ioaddr = dev->base_addr;
+	short rx_status;
+
+	if (el3_debug > 5)
+		printk("   In rx_packet(), status %4.4x, rx_status %4.4x.\n",
+			   inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
+	while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) {
+		if (rx_status & 0x4000) { /* Error, update stats. */
+			short error = rx_status & 0x3800;
+
+			outw(RxDiscard, ioaddr + EL3_CMD);
+			lp->stats.rx_errors++;
+			switch (error) {
+			case 0x0000:		lp->stats.rx_over_errors++; break;
+			case 0x0800:		lp->stats.rx_length_errors++; break;
+			case 0x1000:		lp->stats.rx_frame_errors++; break;
+			case 0x1800:		lp->stats.rx_length_errors++; break;
+			case 0x2000:		lp->stats.rx_frame_errors++; break;
+			case 0x2800:		lp->stats.rx_crc_errors++; break;
+			}
+		} else {
+			short pkt_len = rx_status & 0x7ff;
+			struct sk_buff *skb;
+
+			skb = dev_alloc_skb(pkt_len+5);
+			lp->stats.rx_bytes += pkt_len;
+			if (el3_debug > 4)
+				printk("Receiving packet size %d status %4.4x.\n",
+					   pkt_len, rx_status);
+			if (skb != NULL) {
+				skb->dev = dev;
+				skb_reserve(skb, 2);     /* Align IP on 16 byte */
+
+				/* 'skb->data' points to the start of sk_buff data area. */
+#ifdef  __powerpc__
+				insl_ns(ioaddr+RX_FIFO, skb_put(skb,pkt_len),
+							   (pkt_len + 3) >> 2);
+#else
+				insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len),
+					 (pkt_len + 3) >> 2);
+#endif
+
+				outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
+				skb->protocol = eth_type_trans(skb,dev);
+				netif_rx(skb);
+				dev->last_rx = jiffies;
+				lp->stats.rx_packets++;
+				continue;
+			}
+			outw(RxDiscard, ioaddr + EL3_CMD);
+			lp->stats.rx_dropped++;
+			if (el3_debug)
+				printk("%s: Couldn't allocate a sk_buff of size %d.\n",
+					   dev->name, pkt_len);
+		}
+		inw(ioaddr + EL3_STATUS); 				/* Delay. */
+		while (inw(ioaddr + EL3_STATUS) & 0x1000)
+			printk(KERN_DEBUG "	Waiting for 3c509 to discard packet, status %x.\n",
+				   inw(ioaddr + EL3_STATUS) );
+	}
+
+	return 0;
+}
+
+/*
+ *     Set or clear the multicast filter for this adaptor.
+ */
+static void
+set_multicast_list(struct net_device *dev)
+{
+	unsigned long flags;
+	struct el3_private *lp = netdev_priv(dev);
+	int ioaddr = dev->base_addr;
+
+	if (el3_debug > 1) {
+		static int old;
+		if (old != dev->mc_count) {
+			old = dev->mc_count;
+			printk("%s: Setting Rx mode to %d addresses.\n", dev->name, dev->mc_count);
+		}
+	}
+	spin_lock_irqsave(&lp->lock, flags);
+	if (dev->flags&IFF_PROMISC) {
+		outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
+			 ioaddr + EL3_CMD);
+	}
+	else if (dev->mc_count || (dev->flags&IFF_ALLMULTI)) {
+		outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD);
+	}
+	else
+		outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
+	spin_unlock_irqrestore(&lp->lock, flags);
+}
+
+static int
+el3_close(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+	struct el3_private *lp = netdev_priv(dev);
+	
+	if (el3_debug > 2)
+		printk("%s: Shutting down ethercard.\n", dev->name);
+
+	el3_down(dev);
+
+	free_irq(dev->irq, dev);
+	/* Switching back to window 0 disables the IRQ. */
+	EL3WINDOW(0);
+	if (lp->type != EL3_EISA) {
+		/* But we explicitly zero the IRQ line select anyway. Don't do
+		 * it on EISA cards, it prevents the module from getting an
+		 * IRQ after unload+reload... */
+		outw(0x0f00, ioaddr + WN0_IRQ);
+	}
+
+	return 0;
+}
+
+static int 
+el3_link_ok(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+	u16 tmp;
+
+	EL3WINDOW(4);
+	tmp = inw(ioaddr + WN4_MEDIA);
+	EL3WINDOW(1);
+	return tmp & (1<<11);
+}
+
+static int
+el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+	u16 tmp;
+	int ioaddr = dev->base_addr;
+	
+	EL3WINDOW(0);
+	/* obtain current transceiver via WN4_MEDIA? */	
+	tmp = inw(ioaddr + WN0_ADDR_CONF);
+	ecmd->transceiver = XCVR_INTERNAL;
+	switch (tmp >> 14) {
+	case 0:
+		ecmd->port = PORT_TP;
+		break;
+	case 1:
+		ecmd->port = PORT_AUI;
+		ecmd->transceiver = XCVR_EXTERNAL;
+		break;
+	case 3:
+		ecmd->port = PORT_BNC;
+	default:
+		break;
+	}
+
+	ecmd->duplex = DUPLEX_HALF;
+	ecmd->supported = 0;
+	tmp = inw(ioaddr + WN0_CONF_CTRL);
+	if (tmp & (1<<13))
+		ecmd->supported |= SUPPORTED_AUI;
+	if (tmp & (1<<12))
+		ecmd->supported |= SUPPORTED_BNC;
+	if (tmp & (1<<9)) {
+		ecmd->supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |
+				SUPPORTED_10baseT_Full;	/* hmm... */
+		EL3WINDOW(4);
+		tmp = inw(ioaddr + WN4_NETDIAG);
+		if (tmp & FD_ENABLE)
+			ecmd->duplex = DUPLEX_FULL;
+	}
+
+	ecmd->speed = SPEED_10;
+	EL3WINDOW(1);
+	return 0;
+}
+
+static int
+el3_netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+	u16 tmp;
+	int ioaddr = dev->base_addr;
+
+	if (ecmd->speed != SPEED_10)
+		return -EINVAL;
+	if ((ecmd->duplex != DUPLEX_HALF) && (ecmd->duplex != DUPLEX_FULL))
+		return -EINVAL;
+	if ((ecmd->transceiver != XCVR_INTERNAL) && (ecmd->transceiver != XCVR_EXTERNAL))
+		return -EINVAL;
+
+	/* change XCVR type */
+	EL3WINDOW(0);
+	tmp = inw(ioaddr + WN0_ADDR_CONF);
+	switch (ecmd->port) {
+	case PORT_TP:
+		tmp &= ~(3<<14);
+		dev->if_port = 0;
+		break;
+	case PORT_AUI:
+		tmp |= (1<<14);
+		dev->if_port = 1;
+		break;
+	case PORT_BNC:
+		tmp |= (3<<14);
+		dev->if_port = 3;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	outw(tmp, ioaddr + WN0_ADDR_CONF);
+	if (dev->if_port == 3) {
+		/* fire up the DC-DC convertor if BNC gets enabled */
+		tmp = inw(ioaddr + WN0_ADDR_CONF);
+		if (tmp & (3 << 14)) {
+			outw(StartCoax, ioaddr + EL3_CMD);
+			udelay(800);
+		} else
+			return -EIO;
+	}
+
+	EL3WINDOW(4);
+	tmp = inw(ioaddr + WN4_NETDIAG);
+	if (ecmd->duplex == DUPLEX_FULL)
+		tmp |= FD_ENABLE;
+	else
+		tmp &= ~FD_ENABLE;
+	outw(tmp, ioaddr + WN4_NETDIAG);
+	EL3WINDOW(1);
+
+	return 0;
+}
+
+static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	strcpy(info->driver, DRV_NAME);
+	strcpy(info->version, DRV_VERSION);
+}
+
+static int el3_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+	struct el3_private *lp = netdev_priv(dev);
+	int ret;
+
+	spin_lock_irq(&lp->lock);
+	ret = el3_netdev_get_ecmd(dev, ecmd);
+	spin_unlock_irq(&lp->lock);
+	return ret;
+}
+
+static int el3_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+	struct el3_private *lp = netdev_priv(dev);
+	int ret;
+
+	spin_lock_irq(&lp->lock);
+	ret = el3_netdev_set_ecmd(dev, ecmd);
+	spin_unlock_irq(&lp->lock);
+	return ret;
+}
+
+static u32 el3_get_link(struct net_device *dev)
+{
+	struct el3_private *lp = netdev_priv(dev);
+	u32 ret;
+
+	spin_lock_irq(&lp->lock);
+	ret = el3_link_ok(dev);
+	spin_unlock_irq(&lp->lock);
+	return ret;
+}
+
+static u32 el3_get_msglevel(struct net_device *dev)
+{
+	return el3_debug;
+}
+
+static void el3_set_msglevel(struct net_device *dev, u32 v)
+{
+	el3_debug = v;
+}
+
+static struct ethtool_ops ethtool_ops = {
+	.get_drvinfo = el3_get_drvinfo,
+	.get_settings = el3_get_settings,
+	.set_settings = el3_set_settings,
+	.get_link = el3_get_link,
+	.get_msglevel = el3_get_msglevel,
+	.set_msglevel = el3_set_msglevel,
+};
+
+static void
+el3_down(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+
+	netif_stop_queue(dev);
+
+	/* Turn off statistics ASAP.  We update lp->stats below. */
+	outw(StatsDisable, ioaddr + EL3_CMD);
+
+	/* Disable the receiver and transmitter. */
+	outw(RxDisable, ioaddr + EL3_CMD);
+	outw(TxDisable, ioaddr + EL3_CMD);
+
+	if (dev->if_port == 3)
+		/* Turn off thinnet power.  Green! */
+		outw(StopCoax, ioaddr + EL3_CMD);
+	else if (dev->if_port == 0) {
+		/* Disable link beat and jabber, if_port may change here next open(). */
+		EL3WINDOW(4);
+		outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA);
+	}
+
+	outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
+
+	update_stats(dev);
+}
+
+static void
+el3_up(struct net_device *dev)
+{
+	int i, sw_info, net_diag;
+	int ioaddr = dev->base_addr;
+	
+	/* Activating the board required and does no harm otherwise */
+	outw(0x0001, ioaddr + 4);
+
+	/* Set the IRQ line. */
+	outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);
+
+	/* Set the station address in window 2 each time opened. */
+	EL3WINDOW(2);
+
+	for (i = 0; i < 6; i++)
+		outb(dev->dev_addr[i], ioaddr + i);
+
+	if ((dev->if_port & 0x03) == 3) /* BNC interface */
+		/* Start the thinnet transceiver. We should really wait 50ms...*/
+		outw(StartCoax, ioaddr + EL3_CMD);
+	else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */
+		/* Combine secondary sw_info word (the adapter level) and primary
+			sw_info word (duplex setting plus other useless bits) */
+		EL3WINDOW(0);
+		sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) | 
+			(read_eeprom(ioaddr, 0x0d) & 0xBff0);
+
+		EL3WINDOW(4);
+		net_diag = inw(ioaddr + WN4_NETDIAG);
+		net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */
+		printk("%s: ", dev->name);
+		switch (dev->if_port & 0x0c) {
+			case 12:
+				/* force full-duplex mode if 3c5x9b */
+				if (sw_info & 0x000f) {
+					printk("Forcing 3c5x9b full-duplex mode");
+					break;
+				}
+			case 8:
+				/* set full-duplex mode based on eeprom config setting */
+				if ((sw_info & 0x000f) && (sw_info & 0x8000)) {
+					printk("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)");
+					break;
+				}
+			default:
+				/* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */
+				printk("Setting 3c5x9/3c5x9B half-duplex mode");
+				net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */
+		}
+
+		outw(net_diag, ioaddr + WN4_NETDIAG);
+		printk(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info);
+		if (el3_debug > 3)
+			printk("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag);
+		/* Enable link beat and jabber check. */
+		outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA);
+	}
+
+	/* Switch to the stats window, and clear all stats by reading. */
+	outw(StatsDisable, ioaddr + EL3_CMD);
+	EL3WINDOW(6);
+	for (i = 0; i < 9; i++)
+		inb(ioaddr + i);
+	inw(ioaddr + 10);
+	inw(ioaddr + 12);
+
+	/* Switch to register set 1 for normal use. */
+	EL3WINDOW(1);
+
+	/* Accept b-case and phys addr only. */
+	outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
+	outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
+
+	outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
+	outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
+	/* Allow status bits to be seen. */
+	outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
+	/* Ack all pending events, and set active indicator mask. */
+	outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
+		 ioaddr + EL3_CMD);
+	outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull,
+		 ioaddr + EL3_CMD);
+
+	netif_start_queue(dev);
+}
+
+/* Power Management support functions */
+#ifdef CONFIG_PM
+
+static int
+el3_suspend(struct pm_dev *pdev)
+{
+	unsigned long flags;
+	struct net_device *dev;
+	struct el3_private *lp;
+	int ioaddr;
+	
+	if (!pdev && !pdev->data)
+		return -EINVAL;
+
+	dev = (struct net_device *)pdev->data;
+	lp = netdev_priv(dev);
+	ioaddr = dev->base_addr;
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	if (netif_running(dev))
+		netif_device_detach(dev);
+
+	el3_down(dev);
+	outw(PowerDown, ioaddr + EL3_CMD);
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+	return 0;
+}
+
+static int
+el3_resume(struct pm_dev *pdev)
+{
+	unsigned long flags;
+	struct net_device *dev;
+	struct el3_private *lp;
+	int ioaddr;
+	
+	if (!pdev && !pdev->data)
+		return -EINVAL;
+
+	dev = (struct net_device *)pdev->data;
+	lp = netdev_priv(dev);
+	ioaddr = dev->base_addr;
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	outw(PowerUp, ioaddr + EL3_CMD);
+	el3_up(dev);
+
+	if (netif_running(dev))
+		netif_device_attach(dev);
+		
+	spin_unlock_irqrestore(&lp->lock, flags);
+	return 0;
+}
+
+static int
+el3_pm_callback(struct pm_dev *pdev, pm_request_t rqst, void *data)
+{
+	switch (rqst) {
+		case PM_SUSPEND:
+			return el3_suspend(pdev);
+
+		case PM_RESUME:
+			return el3_resume(pdev);
+	}
+	return 0;
+}
+
+#endif /* CONFIG_PM */
+
+/* Parameters that may be passed into the module. */
+static int debug = -1;
+static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1};
+static int xcvr[] = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1};
+
+module_param(debug,int, 0);
+module_param_array(irq, int, NULL, 0);
+module_param_array(xcvr, int, NULL, 0);
+module_param(max_interrupt_work, int, 0);
+MODULE_PARM_DESC(debug, "debug level (0-6)");
+MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
+MODULE_PARM_DESC(xcvr,"transceiver(s) (0=internal, 1=external)");
+MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");
+#if defined(__ISAPNP__)
+module_param(nopnp, int, 0);
+MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");
+MODULE_DEVICE_TABLE(isapnp, el3_isapnp_adapters);
+#endif	/* __ISAPNP__ */
+MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B) ISA/PnP ethernet driver");
+MODULE_LICENSE("GPL");
+
+static int __init el3_init_module(void)
+{
+	el3_cards = 0;
+
+	if (debug >= 0)
+		el3_debug = debug;
+
+	el3_root_dev = NULL;
+	while (el3_probe(el3_cards) == 0) {
+		if (irq[el3_cards] > 1)
+			el3_root_dev->irq = irq[el3_cards];
+		if (xcvr[el3_cards] >= 0)
+			el3_root_dev->if_port = xcvr[el3_cards];
+		el3_cards++;
+	}
+
+#ifdef CONFIG_EISA
+	if (eisa_driver_register (&el3_eisa_driver) < 0) {
+		eisa_driver_unregister (&el3_eisa_driver);
+	}
+#endif
+#ifdef CONFIG_MCA
+	mca_register_driver(&el3_mca_driver);
+#endif
+	return 0;
+}
+
+static void __exit el3_cleanup_module(void)
+{
+	struct net_device *next_dev;
+
+	while (el3_root_dev) {
+		struct el3_private *lp = netdev_priv(el3_root_dev);
+
+		next_dev = lp->next_dev;
+		el3_common_remove (el3_root_dev);
+		el3_root_dev = next_dev;
+	}
+
+#ifdef CONFIG_EISA
+	eisa_driver_unregister (&el3_eisa_driver);
+#endif
+#ifdef CONFIG_MCA
+	mca_unregister_driver(&el3_mca_driver);
+#endif
+}
+
+module_init (el3_init_module);
+module_exit (el3_cleanup_module);
+