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, 1864 insertions, 0 deletions

diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c
new file mode 100644
index 000000000000..853b586e481a
--- /dev/null
+++ b/drivers/net/pcmcia/axnet_cs.c
@@ -0,0 +1,1864 @@
+/*======================================================================
+
+    A PCMCIA ethernet driver for Asix AX88190-based cards
+
+    The Asix AX88190 is a NS8390-derived chipset with a few nasty
+    idiosyncracies that make it very inconvenient to support with a
+    standard 8390 driver.  This driver is based on pcnet_cs, with the
+    tweaked 8390 code grafted on the end.  Much of what I did was to
+    clean up and update a similar driver supplied by Asix, which was
+    adapted by William Lee, william@asix.com.tw.
+
+    Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net
+
+    axnet_cs.c 1.28 2002/06/29 06:27:37
+
+    The network driver code is based on Donald Becker's NE2000 code:
+
+    Written 1992,1993 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.
+    Donald Becker may be reached at becker@scyld.com
+
+======================================================================*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include "../8390.h"
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/byteorder.h>
+#include <asm/uaccess.h>
+
+#define AXNET_CMD	0x00
+#define AXNET_DATAPORT	0x10	/* NatSemi-defined port window offset. */
+#define AXNET_RESET	0x1f	/* Issue a read to reset, a write to clear. */
+#define AXNET_MII_EEP	0x14	/* Offset of MII access port */
+#define AXNET_TEST	0x15	/* Offset of TEST Register port */
+#define AXNET_GPIO	0x17	/* Offset of General Purpose Register Port */
+
+#define AXNET_START_PG	0x40	/* First page of TX buffer */
+#define AXNET_STOP_PG	0x80	/* Last page +1 of RX ring */
+
+#define AXNET_RDC_TIMEOUT 0x02	/* Max wait in jiffies for Tx RDC */
+
+#define IS_AX88190	0x0001
+#define IS_AX88790	0x0002
+
+/*====================================================================*/
+
+/* Module parameters */
+
+MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
+MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
+MODULE_LICENSE("GPL");
+
+#ifdef PCMCIA_DEBUG
+#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
+
+INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version =
+"axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+static void axnet_config(dev_link_t *link);
+static void axnet_release(dev_link_t *link);
+static int axnet_event(event_t event, int priority,
+		       event_callback_args_t *args);
+static int axnet_open(struct net_device *dev);
+static int axnet_close(struct net_device *dev);
+static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static struct ethtool_ops netdev_ethtool_ops;
+static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs);
+static void ei_watchdog(u_long arg);
+static void axnet_reset_8390(struct net_device *dev);
+
+static int mdio_read(kio_addr_t addr, int phy_id, int loc);
+static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value);
+
+static void get_8390_hdr(struct net_device *,
+			 struct e8390_pkt_hdr *, int);
+static void block_input(struct net_device *dev, int count,
+			struct sk_buff *skb, int ring_offset);
+static void block_output(struct net_device *dev, int count,
+			 const u_char *buf, const int start_page);
+
+static dev_link_t *axnet_attach(void);
+static void axnet_detach(dev_link_t *);
+
+static dev_info_t dev_info = "axnet_cs";
+static dev_link_t *dev_list;
+
+static void axdev_setup(struct net_device *dev);
+static void AX88190_init(struct net_device *dev, int startp);
+static int ax_open(struct net_device *dev);
+static int ax_close(struct net_device *dev);
+static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+
+/*====================================================================*/
+
+typedef struct axnet_dev_t {
+    dev_link_t		link;
+    dev_node_t		node;
+    caddr_t		base;
+    struct timer_list	watchdog;
+    int			stale, fast_poll;
+    u_short		link_status;
+    u_char		duplex_flag;
+    int			phy_id;
+    int			flags;
+} axnet_dev_t;
+
+static inline axnet_dev_t *PRIV(struct net_device *dev)
+{
+	void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
+	return p;
+}
+
+/*======================================================================
+
+    axnet_attach() creates an "instance" of the driver, allocating
+    local data structures for one device.  The device is registered
+    with Card Services.
+
+======================================================================*/
+
+static dev_link_t *axnet_attach(void)
+{
+    axnet_dev_t *info;
+    dev_link_t *link;
+    struct net_device *dev;
+    client_reg_t client_reg;
+    int ret;
+
+    DEBUG(0, "axnet_attach()\n");
+
+    dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
+			"eth%d", axdev_setup);
+
+    if (!dev)
+	return NULL;
+
+    info = PRIV(dev);
+    link = &info->link;
+    link->priv = dev;
+    link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+    link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+    link->conf.Attributes = CONF_ENABLE_IRQ;
+    link->conf.IntType = INT_MEMORY_AND_IO;
+
+    dev->open = &axnet_open;
+    dev->stop = &axnet_close;
+    dev->do_ioctl = &axnet_ioctl;
+    SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
+
+    /* Register with Card Services */
+    link->next = dev_list;
+    dev_list = link;
+    client_reg.dev_info = &dev_info;
+    client_reg.EventMask =
+	CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+	CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+	CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+    client_reg.event_handler = &axnet_event;
+    client_reg.Version = 0x0210;
+    client_reg.event_callback_args.client_data = link;
+    ret = pcmcia_register_client(&link->handle, &client_reg);
+    if (ret != CS_SUCCESS) {
+	cs_error(link->handle, RegisterClient, ret);
+	axnet_detach(link);
+	return NULL;
+    }
+
+    return link;
+} /* axnet_attach */
+
+/*======================================================================
+
+    This deletes a driver "instance".  The device is de-registered
+    with Card Services.  If it has been released, all local data
+    structures are freed.  Otherwise, the structures will be freed
+    when the device is released.
+
+======================================================================*/
+
+static void axnet_detach(dev_link_t *link)
+{
+    struct net_device *dev = link->priv;
+    dev_link_t **linkp;
+
+    DEBUG(0, "axnet_detach(0x%p)\n", link);
+
+    /* Locate device structure */
+    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+	if (*linkp == link) break;
+    if (*linkp == NULL)
+	return;
+
+    if (link->dev)
+	unregister_netdev(dev);
+
+    if (link->state & DEV_CONFIG)
+	axnet_release(link);
+
+    if (link->handle)
+	pcmcia_deregister_client(link->handle);
+
+    /* Unlink device structure, free bits */
+    *linkp = link->next;
+    free_netdev(dev);
+} /* axnet_detach */
+
+/*======================================================================
+
+    This probes for a card's hardware address by reading the PROM.
+
+======================================================================*/
+
+static int get_prom(dev_link_t *link)
+{
+    struct net_device *dev = link->priv;
+    kio_addr_t ioaddr = dev->base_addr;
+    int i, j;
+
+    /* This is based on drivers/net/ne.c */
+    struct {
+	u_char value, offset;
+    } program_seq[] = {
+	{E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
+	{0x01,	EN0_DCFG},	/* Set word-wide access. */
+	{0x00,	EN0_RCNTLO},	/* Clear the count regs. */
+	{0x00,	EN0_RCNTHI},
+	{0x00,	EN0_IMR},	/* Mask completion irq. */
+	{0xFF,	EN0_ISR},
+	{E8390_RXOFF|0x40, EN0_RXCR},	/* 0x60  Set to monitor */
+	{E8390_TXOFF, EN0_TXCR},	/* 0x02  and loopback mode. */
+	{0x10,	EN0_RCNTLO},
+	{0x00,	EN0_RCNTHI},
+	{0x00,	EN0_RSARLO},	/* DMA starting at 0x0400. */
+	{0x04,	EN0_RSARHI},
+	{E8390_RREAD+E8390_START, E8390_CMD},
+    };
+
+    /* Not much of a test, but the alternatives are messy */
+    if (link->conf.ConfigBase != 0x03c0)
+	return 0;
+
+    axnet_reset_8390(dev);
+    mdelay(10);
+
+    for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
+	outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
+
+    for (i = 0; i < 6; i += 2) {
+	j = inw(ioaddr + AXNET_DATAPORT);
+	dev->dev_addr[i] = j & 0xff;
+	dev->dev_addr[i+1] = j >> 8;
+    }
+    return 1;
+} /* get_prom */
+
+/*======================================================================
+
+    axnet_config() is scheduled to run after a CARD_INSERTION event
+    is received, to configure the PCMCIA socket, and to make the
+    ethernet device available to the system.
+
+======================================================================*/
+
+#define CS_CHECK(fn, ret) \
+do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+
+static int try_io_port(dev_link_t *link)
+{
+    int j, ret;
+    if (link->io.NumPorts1 == 32) {
+	link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+	if (link->io.NumPorts2 > 0) {
+	    /* for master/slave multifunction cards */
+	    link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
+	    link->irq.Attributes = 
+		IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
+	}
+    } else {
+	/* This should be two 16-port windows */
+	link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+	link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
+    }
+    if (link->io.BasePort1 == 0) {
+	link->io.IOAddrLines = 16;
+	for (j = 0; j < 0x400; j += 0x20) {
+	    link->io.BasePort1 = j ^ 0x300;
+	    link->io.BasePort2 = (j ^ 0x300) + 0x10;
+	    ret = pcmcia_request_io(link->handle, &link->io);
+	    if (ret == CS_SUCCESS) return ret;
+	}
+	return ret;
+    } else {
+	return pcmcia_request_io(link->handle, &link->io);
+    }
+}
+
+static void axnet_config(dev_link_t *link)
+{
+    client_handle_t handle = link->handle;
+    struct net_device *dev = link->priv;
+    axnet_dev_t *info = PRIV(dev);
+    tuple_t tuple;
+    cisparse_t parse;
+    int i, j, last_ret, last_fn;
+    u_short buf[64];
+    config_info_t conf;
+
+    DEBUG(0, "axnet_config(0x%p)\n", link);
+
+    tuple.Attributes = 0;
+    tuple.TupleData = (cisdata_t *)buf;
+    tuple.TupleDataMax = sizeof(buf);
+    tuple.TupleOffset = 0;
+    tuple.DesiredTuple = CISTPL_CONFIG;
+    CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+    CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+    CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+    link->conf.ConfigBase = parse.config.base;
+    /* don't trust the CIS on this; Linksys got it wrong */
+    link->conf.Present = 0x63;
+
+    /* Configure card */
+    link->state |= DEV_CONFIG;
+
+    /* Look up current Vcc */
+    CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
+    link->conf.Vcc = conf.Vcc;
+
+    tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+    tuple.Attributes = 0;
+    CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+    while (last_ret == CS_SUCCESS) {
+	cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
+	cistpl_io_t *io = &(parse.cftable_entry.io);
+	
+	if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
+		pcmcia_parse_tuple(handle, &tuple, &parse) != 0 ||
+		cfg->index == 0 || cfg->io.nwin == 0)
+	    goto next_entry;
+	
+	link->conf.ConfigIndex = 0x05;
+	/* For multifunction cards, by convention, we configure the
+	   network function with window 0, and serial with window 1 */
+	if (io->nwin > 1) {
+	    i = (io->win[1].len > io->win[0].len);
+	    link->io.BasePort2 = io->win[1-i].base;
+	    link->io.NumPorts2 = io->win[1-i].len;
+	} else {
+	    i = link->io.NumPorts2 = 0;
+	}
+	link->io.BasePort1 = io->win[i].base;
+	link->io.NumPorts1 = io->win[i].len;
+	link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
+	if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
+	    last_ret = try_io_port(link);
+	    if (last_ret == CS_SUCCESS) break;
+	}
+    next_entry:
+	last_ret = pcmcia_get_next_tuple(handle, &tuple);
+    }
+    if (last_ret != CS_SUCCESS) {
+	cs_error(handle, RequestIO, last_ret);
+	goto failed;
+    }
+
+    CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
+    
+    if (link->io.NumPorts2 == 8) {
+	link->conf.Attributes |= CONF_ENABLE_SPKR;
+	link->conf.Status = CCSR_AUDIO_ENA;
+    }
+    
+    CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
+    dev->irq = link->irq.AssignedIRQ;
+    dev->base_addr = link->io.BasePort1;
+
+    if (!get_prom(link)) {
+	printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
+	printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
+	goto failed;
+    }
+
+    ei_status.name = "AX88190";
+    ei_status.word16 = 1;
+    ei_status.tx_start_page = AXNET_START_PG;
+    ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
+    ei_status.stop_page = AXNET_STOP_PG;
+    ei_status.reset_8390 = &axnet_reset_8390;
+    ei_status.get_8390_hdr = &get_8390_hdr;
+    ei_status.block_input = &block_input;
+    ei_status.block_output = &block_output;
+
+    if (inb(dev->base_addr + AXNET_TEST) != 0)
+	info->flags |= IS_AX88790;
+    else
+	info->flags |= IS_AX88190;
+
+    if (info->flags & IS_AX88790)
+	outb(0x10, dev->base_addr + AXNET_GPIO);  /* select Internal PHY */
+
+    for (i = 0; i < 32; i++) {
+	j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
+	if ((j != 0) && (j != 0xffff)) break;
+    }
+
+    /* Maybe PHY is in power down mode. (PPD_SET = 1) 
+       Bit 2 of CCSR is active low. */ 
+    if (i == 32) {
+	conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
+ 	pcmcia_access_configuration_register(link->handle, &reg);
+	for (i = 0; i < 32; i++) {
+	    j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
+	    if ((j != 0) && (j != 0xffff)) break;
+	}
+    }
+
+    info->phy_id = (i < 32) ? i : -1;
+    link->dev = &info->node;
+    link->state &= ~DEV_CONFIG_PENDING;
+    SET_NETDEV_DEV(dev, &handle_to_dev(handle));
+
+    if (register_netdev(dev) != 0) {
+	printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
+	link->dev = NULL;
+	goto failed;
+    }
+
+    strcpy(info->node.dev_name, dev->name);
+
+    printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, hw_addr ",
+	   dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
+	   dev->base_addr, dev->irq);
+    for (i = 0; i < 6; i++)
+	printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
+    if (info->phy_id != -1) {
+	DEBUG(0, "  MII transceiver at index %d, status %x.\n", info->phy_id, j);
+    } else {
+	printk(KERN_NOTICE "  No MII transceivers found!\n");
+    }
+    return;
+
+cs_failed:
+    cs_error(link->handle, last_fn, last_ret);
+failed:
+    axnet_release(link);
+    link->state &= ~DEV_CONFIG_PENDING;
+    return;
+} /* axnet_config */
+
+/*======================================================================
+
+    After a card is removed, axnet_release() will unregister the net
+    device, and release the PCMCIA configuration.  If the device is
+    still open, this will be postponed until it is closed.
+
+======================================================================*/
+
+static void axnet_release(dev_link_t *link)
+{
+    DEBUG(0, "axnet_release(0x%p)\n", link);
+
+    pcmcia_release_configuration(link->handle);
+    pcmcia_release_io(link->handle, &link->io);
+    pcmcia_release_irq(link->handle, &link->irq);
+
+    link->state &= ~DEV_CONFIG;
+}
+
+/*======================================================================
+
+    The card status event handler.  Mostly, this schedules other
+    stuff to run after an event is received.  A CARD_REMOVAL event
+    also sets some flags to discourage the net drivers from trying
+    to talk to the card any more.
+
+======================================================================*/
+
+static int axnet_event(event_t event, int priority,
+		       event_callback_args_t *args)
+{
+    dev_link_t *link = args->client_data;
+    struct net_device *dev = link->priv;
+
+    DEBUG(2, "axnet_event(0x%06x)\n", event);
+
+    switch (event) {
+    case CS_EVENT_CARD_REMOVAL:
+	link->state &= ~DEV_PRESENT;
+	if (link->state & DEV_CONFIG)
+	    netif_device_detach(dev);
+	break;
+    case CS_EVENT_CARD_INSERTION:
+	link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+	axnet_config(link);
+	break;
+    case CS_EVENT_PM_SUSPEND:
+	link->state |= DEV_SUSPEND;
+	/* Fall through... */
+    case CS_EVENT_RESET_PHYSICAL:
+	if (link->state & DEV_CONFIG) {
+	    if (link->open)
+		netif_device_detach(dev);
+	    pcmcia_release_configuration(link->handle);
+	}
+	break;
+    case CS_EVENT_PM_RESUME:
+	link->state &= ~DEV_SUSPEND;
+	/* Fall through... */
+    case CS_EVENT_CARD_RESET:
+	if (link->state & DEV_CONFIG) {
+	    pcmcia_request_configuration(link->handle, &link->conf);
+	    if (link->open) {
+		axnet_reset_8390(dev);
+		AX88190_init(dev, 1);
+		netif_device_attach(dev);
+	    }
+	}
+	break;
+    }
+    return 0;
+} /* axnet_event */
+
+/*======================================================================
+
+    MII interface support
+
+======================================================================*/
+
+#define MDIO_SHIFT_CLK		0x01
+#define MDIO_DATA_WRITE0	0x00
+#define MDIO_DATA_WRITE1	0x08
+#define MDIO_DATA_READ		0x04
+#define MDIO_MASK		0x0f
+#define MDIO_ENB_IN		0x02
+
+static void mdio_sync(kio_addr_t addr)
+{
+    int bits;
+    for (bits = 0; bits < 32; bits++) {
+	outb_p(MDIO_DATA_WRITE1, addr);
+	outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
+    }
+}
+
+static int mdio_read(kio_addr_t addr, int phy_id, int loc)
+{
+    u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
+    int i, retval = 0;
+
+    mdio_sync(addr);
+    for (i = 14; i >= 0; i--) {
+	int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
+	outb_p(dat, addr);
+	outb_p(dat | MDIO_SHIFT_CLK, addr);
+    }
+    for (i = 19; i > 0; i--) {
+	outb_p(MDIO_ENB_IN, addr);
+	retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
+	outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
+    }
+    return (retval>>1) & 0xffff;
+}
+
+static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value)
+{
+    u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
+    int i;
+
+    mdio_sync(addr);
+    for (i = 31; i >= 0; i--) {
+	int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
+	outb_p(dat, addr);
+	outb_p(dat | MDIO_SHIFT_CLK, addr);
+    }
+    for (i = 1; i >= 0; i--) {
+	outb_p(MDIO_ENB_IN, addr);
+	outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
+    }
+}
+
+/*====================================================================*/
+
+static int axnet_open(struct net_device *dev)
+{
+    axnet_dev_t *info = PRIV(dev);
+    dev_link_t *link = &info->link;
+    
+    DEBUG(2, "axnet_open('%s')\n", dev->name);
+
+    if (!DEV_OK(link))
+	return -ENODEV;
+
+    link->open++;
+
+    request_irq(dev->irq, ei_irq_wrapper, SA_SHIRQ, dev_info, dev);
+
+    info->link_status = 0x00;
+    init_timer(&info->watchdog);
+    info->watchdog.function = &ei_watchdog;
+    info->watchdog.data = (u_long)dev;
+    info->watchdog.expires = jiffies + HZ;
+    add_timer(&info->watchdog);
+
+    return ax_open(dev);
+} /* axnet_open */
+
+/*====================================================================*/
+
+static int axnet_close(struct net_device *dev)
+{
+    axnet_dev_t *info = PRIV(dev);
+    dev_link_t *link = &info->link;
+
+    DEBUG(2, "axnet_close('%s')\n", dev->name);
+
+    ax_close(dev);
+    free_irq(dev->irq, dev);
+    
+    link->open--;
+    netif_stop_queue(dev);
+    del_timer_sync(&info->watchdog);
+
+    return 0;
+} /* axnet_close */
+
+/*======================================================================
+
+    Hard reset the card.  This used to pause for the same period that
+    a 8390 reset command required, but that shouldn't be necessary.
+
+======================================================================*/
+
+static void axnet_reset_8390(struct net_device *dev)
+{
+    kio_addr_t nic_base = dev->base_addr;
+    int i;
+
+    ei_status.txing = ei_status.dmaing = 0;
+
+    outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
+
+    outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
+
+    for (i = 0; i < 100; i++) {
+	if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
+	    break;
+	udelay(100);
+    }
+    outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
+    
+    if (i == 100)
+	printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
+	       dev->name);
+    
+} /* axnet_reset_8390 */
+
+/*====================================================================*/
+
+static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs)
+{
+    struct net_device *dev = dev_id;
+    PRIV(dev)->stale = 0;
+    return ax_interrupt(irq, dev_id, regs);
+}
+
+static void ei_watchdog(u_long arg)
+{
+    struct net_device *dev = (struct net_device *)(arg);
+    axnet_dev_t *info = PRIV(dev);
+    kio_addr_t nic_base = dev->base_addr;
+    kio_addr_t mii_addr = nic_base + AXNET_MII_EEP;
+    u_short link;
+
+    if (!netif_device_present(dev)) goto reschedule;
+
+    /* Check for pending interrupt with expired latency timer: with
+       this, we can limp along even if the interrupt is blocked */
+    if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
+	if (!info->fast_poll)
+	    printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
+	ei_irq_wrapper(dev->irq, dev, NULL);
+	info->fast_poll = HZ;
+    }
+    if (info->fast_poll) {
+	info->fast_poll--;
+	info->watchdog.expires = jiffies + 1;
+	add_timer(&info->watchdog);
+	return;
+    }
+
+    if (info->phy_id < 0)
+	goto reschedule;
+    link = mdio_read(mii_addr, info->phy_id, 1);
+    if (!link || (link == 0xffff)) {
+	printk(KERN_INFO "%s: MII is missing!\n", dev->name);
+	info->phy_id = -1;
+	goto reschedule;
+    }
+
+    link &= 0x0004;
+    if (link != info->link_status) {
+	u_short p = mdio_read(mii_addr, info->phy_id, 5);
+	printk(KERN_INFO "%s: %s link beat\n", dev->name,
+	       (link) ? "found" : "lost");
+	if (link) {
+	    info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
+	    if (p)
+		printk(KERN_INFO "%s: autonegotiation complete: "
+		       "%sbaseT-%cD selected\n", dev->name,
+		       ((p & 0x0180) ? "100" : "10"),
+		       ((p & 0x0140) ? 'F' : 'H'));
+	    else
+		printk(KERN_INFO "%s: link partner did not autonegotiate\n",
+		       dev->name);
+	    AX88190_init(dev, 1);
+	}
+	info->link_status = link;
+    }
+
+reschedule:
+    info->watchdog.expires = jiffies + HZ;
+    add_timer(&info->watchdog);
+}
+
+static void netdev_get_drvinfo(struct net_device *dev,
+			       struct ethtool_drvinfo *info)
+{
+	strcpy(info->driver, "axnet_cs");
+}
+
+static struct ethtool_ops netdev_ethtool_ops = {
+	.get_drvinfo		= netdev_get_drvinfo,
+};
+
+/*====================================================================*/
+
+static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+    axnet_dev_t *info = PRIV(dev);
+    u16 *data = (u16 *)&rq->ifr_ifru;
+    kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
+    switch (cmd) {
+    case SIOCGMIIPHY:
+	data[0] = info->phy_id;
+    case SIOCGMIIREG:		/* Read MII PHY register. */
+	data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
+	return 0;
+    case SIOCSMIIREG:		/* Write MII PHY register. */
+	if (!capable(CAP_NET_ADMIN))
+	    return -EPERM;
+	mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
+	return 0;
+    }
+    return -EOPNOTSUPP;
+}
+
+/*====================================================================*/
+
+static void get_8390_hdr(struct net_device *dev,
+			 struct e8390_pkt_hdr *hdr,
+			 int ring_page)
+{
+    kio_addr_t nic_base = dev->base_addr;
+
+    outb_p(0, nic_base + EN0_RSARLO);		/* On page boundary */
+    outb_p(ring_page, nic_base + EN0_RSARHI);
+    outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
+
+    insw(nic_base + AXNET_DATAPORT, hdr,
+	    sizeof(struct e8390_pkt_hdr)>>1);
+    /* Fix for big endian systems */
+    hdr->count = le16_to_cpu(hdr->count);
+
+}
+
+/*====================================================================*/
+
+static void block_input(struct net_device *dev, int count,
+			struct sk_buff *skb, int ring_offset)
+{
+    kio_addr_t nic_base = dev->base_addr;
+    int xfer_count = count;
+    char *buf = skb->data;
+
+#ifdef PCMCIA_DEBUG
+    if ((ei_debug > 4) && (count != 4))
+	printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
+#endif
+    outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
+    outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
+    outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
+
+    insw(nic_base + AXNET_DATAPORT,buf,count>>1);
+    if (count & 0x01)
+	buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
+
+}
+
+/*====================================================================*/
+
+static void block_output(struct net_device *dev, int count,
+			 const u_char *buf, const int start_page)
+{
+    kio_addr_t nic_base = dev->base_addr;
+
+#ifdef PCMCIA_DEBUG
+    if (ei_debug > 4)
+	printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
+#endif
+
+    /* Round the count up for word writes.  Do we need to do this?
+       What effect will an odd byte count have on the 8390?
+       I should check someday. */
+    if (count & 0x01)
+	count++;
+
+    outb_p(0x00, nic_base + EN0_RSARLO);
+    outb_p(start_page, nic_base + EN0_RSARHI);
+    outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
+    outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
+}
+
+static struct pcmcia_driver axnet_cs_driver = {
+	.owner		= THIS_MODULE,
+	.drv		= {
+		.name	= "axnet_cs",
+	},
+	.attach		= axnet_attach,
+	.detach		= axnet_detach,
+};
+
+static int __init init_axnet_cs(void)
+{
+	return pcmcia_register_driver(&axnet_cs_driver);
+}
+
+static void __exit exit_axnet_cs(void)
+{
+	pcmcia_unregister_driver(&axnet_cs_driver);
+	BUG_ON(dev_list != NULL);
+}
+
+module_init(init_axnet_cs);
+module_exit(exit_axnet_cs);
+
+/*====================================================================*/
+
+/* 8390.c: A general NS8390 ethernet driver core for linux. */
+/*
+	Written 1992-94 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.
+
+	The author may be reached as becker@scyld.com, or C/O
+	Scyld Computing Corporation
+	410 Severn Ave., Suite 210
+	Annapolis MD 21403
+
+  This is the chip-specific code for many 8390-based ethernet adaptors.
+  This is not a complete driver, it must be combined with board-specific
+  code such as ne.c, wd.c, 3c503.c, etc.
+
+  Seeing how at least eight drivers use this code, (not counting the
+  PCMCIA ones either) it is easy to break some card by what seems like
+  a simple innocent change. Please contact me or Donald if you think
+  you have found something that needs changing. -- PG
+
+  Changelog:
+
+  Paul Gortmaker	: remove set_bit lock, other cleanups.
+  Paul Gortmaker	: add ei_get_8390_hdr() so we can pass skb's to 
+			  ei_block_input() for eth_io_copy_and_sum().
+  Paul Gortmaker	: exchange static int ei_pingpong for a #define,
+			  also add better Tx error handling.
+  Paul Gortmaker	: rewrite Rx overrun handling as per NS specs.
+  Alexey Kuznetsov	: use the 8390's six bit hash multicast filter.
+  Paul Gortmaker	: tweak ANK's above multicast changes a bit.
+  Paul Gortmaker	: update packet statistics for v2.1.x
+  Alan Cox		: support arbitary stupid port mappings on the
+  			  68K Macintosh. Support >16bit I/O spaces
+  Paul Gortmaker	: add kmod support for auto-loading of the 8390
+			  module by all drivers that require it.
+  Alan Cox		: Spinlocking work, added 'BUG_83C690'
+  Paul Gortmaker	: Separate out Tx timeout code from Tx path.
+
+  Sources:
+  The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
+
+  */
+
+static const char *version_8390 =
+    "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
+
+#include <linux/bitops.h>
+#include <asm/irq.h>
+#include <linux/fcntl.h>
+#include <linux/in.h>
+#include <linux/interrupt.h>
+
+#include <linux/etherdevice.h>
+
+#define BUG_83C690
+
+/* These are the operational function interfaces to board-specific
+   routines.
+	void reset_8390(struct net_device *dev)
+		Resets the board associated with DEV, including a hardware reset of
+		the 8390.  This is only called when there is a transmit timeout, and
+		it is always followed by 8390_init().
+	void block_output(struct net_device *dev, int count, const unsigned char *buf,
+					  int start_page)
+		Write the COUNT bytes of BUF to the packet buffer at START_PAGE.  The
+		"page" value uses the 8390's 256-byte pages.
+	void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
+		Read the 4 byte, page aligned 8390 header. *If* there is a
+		subsequent read, it will be of the rest of the packet.
+	void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
+		Read COUNT bytes from the packet buffer into the skb data area. Start 
+		reading from RING_OFFSET, the address as the 8390 sees it.  This will always
+		follow the read of the 8390 header. 
+*/
+#define ei_reset_8390 (ei_local->reset_8390)
+#define ei_block_output (ei_local->block_output)
+#define ei_block_input (ei_local->block_input)
+#define ei_get_8390_hdr (ei_local->get_8390_hdr)
+
+/* use 0 for production, 1 for verification, >2 for debug */
+#ifndef ei_debug
+int ei_debug = 1;
+#endif
+
+/* Index to functions. */
+static void ei_tx_intr(struct net_device *dev);
+static void ei_tx_err(struct net_device *dev);
+static void ei_tx_timeout(struct net_device *dev);
+static void ei_receive(struct net_device *dev);
+static void ei_rx_overrun(struct net_device *dev);
+
+/* Routines generic to NS8390-based boards. */
+static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
+								int start_page);
+static void set_multicast_list(struct net_device *dev);
+static void do_set_multicast_list(struct net_device *dev);
+
+/*
+ *	SMP and the 8390 setup.
+ *
+ *	The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
+ *	a page register that controls bank and packet buffer access. We guard
+ *	this with ei_local->page_lock. Nobody should assume or set the page other
+ *	than zero when the lock is not held. Lock holders must restore page 0
+ *	before unlocking. Even pure readers must take the lock to protect in 
+ *	page 0.
+ *
+ *	To make life difficult the chip can also be very slow. We therefore can't
+ *	just use spinlocks. For the longer lockups we disable the irq the device
+ *	sits on and hold the lock. We must hold the lock because there is a dual
+ *	processor case other than interrupts (get stats/set multicast list in
+ *	parallel with each other and transmit).
+ *
+ *	Note: in theory we can just disable the irq on the card _but_ there is
+ *	a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
+ *	enter lock, take the queued irq. So we waddle instead of flying.
+ *
+ *	Finally by special arrangement for the purpose of being generally 
+ *	annoying the transmit function is called bh atomic. That places
+ *	restrictions on the user context callers as disable_irq won't save
+ *	them.
+ */
+ 
+/**
+ * ax_open - Open/initialize the board.
+ * @dev: network device to initialize
+ *
+ * This routine goes all-out, setting everything
+ * up anew at each open, even though many of these registers should only
+ * need to be set once at boot.
+ */
+static int ax_open(struct net_device *dev)
+{
+	unsigned long flags;
+	struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
+
+#ifdef HAVE_TX_TIMEOUT
+	/* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
+	    wrapper that does e.g. media check & then calls ei_tx_timeout. */
+	if (dev->tx_timeout == NULL)
+		 dev->tx_timeout = ei_tx_timeout;
+	if (dev->watchdog_timeo <= 0)
+		 dev->watchdog_timeo = TX_TIMEOUT;
+#endif
+
+	/*
+	 *	Grab the page lock so we own the register set, then call
+	 *	the init function.
+	 */
+      
+      	spin_lock_irqsave(&ei_local->page_lock, flags);
+	AX88190_init(dev, 1);
+	/* Set the flag before we drop the lock, That way the IRQ arrives
+	   after its set and we get no silly warnings */
+	netif_start_queue(dev);
+      	spin_unlock_irqrestore(&ei_local->page_lock, flags);
+	ei_local->irqlock = 0;
+	return 0;
+}
+
+#define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
+
+/**
+ * ax_close - shut down network device
+ * @dev: network device to close
+ *
+ * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
+ */
+int ax_close(struct net_device *dev)
+{
+	unsigned long flags;
+
+	/*
+	 *      Hold the page lock during close
+	 */
+
+	spin_lock_irqsave(&dev_lock(dev), flags);
+	AX88190_init(dev, 0);
+	spin_unlock_irqrestore(&dev_lock(dev), flags);
+	netif_stop_queue(dev);
+	return 0;
+}
+
+/**
+ * ei_tx_timeout - handle transmit time out condition
+ * @dev: network device which has apparently fallen asleep
+ *
+ * Called by kernel when device never acknowledges a transmit has
+ * completed (or failed) - i.e. never posted a Tx related interrupt.
+ */
+
+void ei_tx_timeout(struct net_device *dev)
+{
+	long e8390_base = dev->base_addr;
+	struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
+	int txsr, isr, tickssofar = jiffies - dev->trans_start;
+	unsigned long flags;
+
+	ei_local->stat.tx_errors++;
+
+	spin_lock_irqsave(&ei_local->page_lock, flags);
+	txsr = inb(e8390_base+EN0_TSR);
+	isr = inb(e8390_base+EN0_ISR);
+	spin_unlock_irqrestore(&ei_local->page_lock, flags);
+
+	printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
+		dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
+		(isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
+
+	if (!isr && !ei_local->stat.tx_packets) 
+	{
+		/* The 8390 probably hasn't gotten on the cable yet. */
+		ei_local->interface_num ^= 1;   /* Try a different xcvr.  */
+	}
+
+	/* Ugly but a reset can be slow, yet must be protected */
+		
+	disable_irq_nosync(dev->irq);
+	spin_lock(&ei_local->page_lock);
+		
+	/* Try to restart the card.  Perhaps the user has fixed something. */
+	ei_reset_8390(dev);
+	AX88190_init(dev, 1);
+		
+	spin_unlock(&ei_local->page_lock);
+	enable_irq(dev->irq);
+	netif_wake_queue(dev);
+}
+    
+/**
+ * ei_start_xmit - begin packet transmission
+ * @skb: packet to be sent
+ * @dev: network device to which packet is sent
+ *
+ * Sends a packet to an 8390 network device.
+ */
+ 
+static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	long e8390_base = dev->base_addr;
+	struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
+	int length, send_length, output_page;
+	unsigned long flags;
+	u8 packet[ETH_ZLEN];
+	
+	netif_stop_queue(dev);
+
+	length = skb->len;
+
+	/* Mask interrupts from the ethercard. 
+	   SMP: We have to grab the lock here otherwise the IRQ handler
+	   on another CPU can flip window and race the IRQ mask set. We end
+	   up trashing the mcast filter not disabling irqs if we don't lock */
+	   
+	spin_lock_irqsave(&ei_local->page_lock, flags);
+	outb_p(0x00, e8390_base + EN0_IMR);
+	spin_unlock_irqrestore(&ei_local->page_lock, flags);
+	
+	/*
+	 *	Slow phase with lock held.
+	 */
+	 
+	disable_irq_nosync(dev->irq);
+	
+	spin_lock(&ei_local->page_lock);
+	
+	ei_local->irqlock = 1;
+
+	send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
+	
+	/*
+	 * We have two Tx slots available for use. Find the first free
+	 * slot, and then perform some sanity checks. With two Tx bufs,
+	 * you get very close to transmitting back-to-back packets. With
+	 * only one Tx buf, the transmitter sits idle while you reload the
+	 * card, leaving a substantial gap between each transmitted packet.
+	 */
+
+	if (ei_local->tx1 == 0) 
+	{
+		output_page = ei_local->tx_start_page;
+		ei_local->tx1 = send_length;
+		if (ei_debug  &&  ei_local->tx2 > 0)
+			printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
+				dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
+	}
+	else if (ei_local->tx2 == 0) 
+	{
+		output_page = ei_local->tx_start_page + TX_PAGES/2;
+		ei_local->tx2 = send_length;
+		if (ei_debug  &&  ei_local->tx1 > 0)
+			printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
+				dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
+	}
+	else
+	{	/* We should never get here. */
+		if (ei_debug)
+			printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
+				dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
+		ei_local->irqlock = 0;
+		netif_stop_queue(dev);
+		outb_p(ENISR_ALL, e8390_base + EN0_IMR);
+		spin_unlock(&ei_local->page_lock);
+		enable_irq(dev->irq);
+		ei_local->stat.tx_errors++;
+		return 1;
+	}
+
+	/*
+	 * Okay, now upload the packet and trigger a send if the transmitter
+	 * isn't already sending. If it is busy, the interrupt handler will
+	 * trigger the send later, upon receiving a Tx done interrupt.
+	 */
+
+	if (length == skb->len)
+		ei_block_output(dev, length, skb->data, output_page);
+	else {
+		memset(packet, 0, ETH_ZLEN);
+		memcpy(packet, skb->data, skb->len);
+		ei_block_output(dev, length, packet, output_page);
+	}
+	
+	if (! ei_local->txing) 
+	{
+		ei_local->txing = 1;
+		NS8390_trigger_send(dev, send_length, output_page);
+		dev->trans_start = jiffies;
+		if (output_page == ei_local->tx_start_page) 
+		{
+			ei_local->tx1 = -1;
+			ei_local->lasttx = -1;
+		}
+		else 
+		{
+			ei_local->tx2 = -1;
+			ei_local->lasttx = -2;
+		}
+	}
+	else ei_local->txqueue++;
+
+	if (ei_local->tx1  &&  ei_local->tx2)
+		netif_stop_queue(dev);
+	else
+		netif_start_queue(dev);
+
+	/* Turn 8390 interrupts back on. */
+	ei_local->irqlock = 0;
+	outb_p(ENISR_ALL, e8390_base + EN0_IMR);
+	
+	spin_unlock(&ei_local->page_lock);
+	enable_irq(dev->irq);
+
+	dev_kfree_skb (skb);
+	ei_local->stat.tx_bytes += send_length;
+    
+	return 0;
+}
+
+/**
+ * ax_interrupt - handle the interrupts from an 8390
+ * @irq: interrupt number
+ * @dev_id: a pointer to the net_device
+ * @regs: unused
+ *
+ * Handle the ether interface interrupts. We pull packets from
+ * the 8390 via the card specific functions and fire them at the networking
+ * stack. We also handle transmit completions and wake the transmit path if
+ * necessary. We also update the counters and do other housekeeping as
+ * needed.
+ */
+
+static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+	struct net_device *dev = dev_id;
+	long e8390_base;
+	int interrupts, nr_serviced = 0, i;
+	struct ei_device *ei_local;
+    	int handled = 0;
+
+	if (dev == NULL) 
+	{
+		printk ("net_interrupt(): irq %d for unknown device.\n", irq);
+		return IRQ_NONE;
+	}
+    
+	e8390_base = dev->base_addr;
+	ei_local = (struct ei_device *) netdev_priv(dev);
+
+	/*
+	 *	Protect the irq test too.
+	 */
+	 
+	spin_lock(&ei_local->page_lock);
+
+	if (ei_local->irqlock) 
+	{
+#if 1 /* This might just be an interrupt for a PCI device sharing this line */
+		/* The "irqlock" check is only for testing. */
+		printk(ei_local->irqlock
+			   ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
+			   : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
+			   dev->name, inb_p(e8390_base + EN0_ISR),
+			   inb_p(e8390_base + EN0_IMR));
+#endif
+		spin_unlock(&ei_local->page_lock);
+		return IRQ_NONE;
+	}
+    
+	if (ei_debug > 3)
+		printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
+			   inb_p(e8390_base + EN0_ISR));
+
+	outb_p(0x00, e8390_base + EN0_ISR);
+	ei_local->irqlock = 1;
+   
+	/* !!Assumption!! -- we stay in page 0.	 Don't break this. */
+	while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
+		   && ++nr_serviced < MAX_SERVICE) 
+	{
+		if (!netif_running(dev) || (interrupts == 0xff)) {
+			if (ei_debug > 1)
+				printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
+			outb_p(interrupts, e8390_base + EN0_ISR);
+			interrupts = 0;
+			break;
+		}
+		handled = 1;
+
+		/* AX88190 bug fix. */
+		outb_p(interrupts, e8390_base + EN0_ISR);
+		for (i = 0; i < 10; i++) {
+			if (!(inb(e8390_base + EN0_ISR) & interrupts))
+				break;
+			outb_p(0, e8390_base + EN0_ISR);
+			outb_p(interrupts, e8390_base + EN0_ISR);
+		}
+		if (interrupts & ENISR_OVER) 
+			ei_rx_overrun(dev);
+		else if (interrupts & (ENISR_RX+ENISR_RX_ERR)) 
+		{
+			/* Got a good (?) packet. */
+			ei_receive(dev);
+		}
+		/* Push the next to-transmit packet through. */
+		if (interrupts & ENISR_TX)
+			ei_tx_intr(dev);
+		else if (interrupts & ENISR_TX_ERR)
+			ei_tx_err(dev);
+
+		if (interrupts & ENISR_COUNTERS) 
+		{
+			ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
+			ei_local->stat.rx_crc_errors   += inb_p(e8390_base + EN0_COUNTER1);
+			ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
+		}
+	}
+    
+	if (interrupts && ei_debug) 
+	{
+		handled = 1;
+		if (nr_serviced >= MAX_SERVICE) 
+		{
+			/* 0xFF is valid for a card removal */
+			if(interrupts!=0xFF)
+				printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
+				   dev->name, interrupts);
+			outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
+		} else {
+			printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
+			outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
+		}
+	}
+
+	/* Turn 8390 interrupts back on. */
+	ei_local->irqlock = 0;
+	outb_p(ENISR_ALL, e8390_base + EN0_IMR);
+
+	spin_unlock(&ei_local->page_lock);
+	return IRQ_RETVAL(handled);
+}
+
+/**
+ * ei_tx_err - handle transmitter error
+ * @dev: network device which threw the exception
+ *
+ * A transmitter error has happened. Most likely excess collisions (which
+ * is a fairly normal condition). If the error is one where the Tx will
+ * have been aborted, we try and send another one right away, instead of
+ * letting the failed packet sit and collect dust in the Tx buffer. This
+ * is a much better solution as it avoids kernel based Tx timeouts, and
+ * an unnecessary card reset.
+ *
+ * Called with lock held.
+ */
+
+static void ei_tx_err(struct net_device *dev)
+{
+	long e8390_base = dev->base_addr;
+	struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
+	unsigned char txsr = inb_p(e8390_base+EN0_TSR);
+	unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
+
+#ifdef VERBOSE_ERROR_DUMP
+	printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
+	if (txsr & ENTSR_ABT)
+		printk("excess-collisions ");
+	if (txsr & ENTSR_ND)
+		printk("non-deferral ");
+	if (txsr & ENTSR_CRS)
+		printk("lost-carrier ");
+	if (txsr & ENTSR_FU)
+		printk("FIFO-underrun ");
+	if (txsr & ENTSR_CDH)
+		printk("lost-heartbeat ");
+	printk("\n");
+#endif
+
+	if (tx_was_aborted)
+		ei_tx_intr(dev);
+	else 
+	{
+		ei_local->stat.tx_errors++;
+		if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
+		if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
+		if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
+	}
+}
+
+/**
+ * ei_tx_intr - transmit interrupt handler
+ * @dev: network device for which tx intr is handled
+ *
+ * We have finished a transmit: check for errors and then trigger the next
+ * packet to be sent. Called with lock held.
+ */
+
+static void ei_tx_intr(struct net_device *dev)
+{
+	long e8390_base = dev->base_addr;
+	struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
+	int status = inb(e8390_base + EN0_TSR);
+    
+	/*
+	 * There are two Tx buffers, see which one finished, and trigger
+	 * the send of another one if it exists.
+	 */
+	ei_local->txqueue--;
+
+	if (ei_local->tx1 < 0) 
+	{
+		if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
+			printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
+				ei_local->name, ei_local->lasttx, ei_local->tx1);
+		ei_local->tx1 = 0;
+		if (ei_local->tx2 > 0) 
+		{
+			ei_local->txing = 1;
+			NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
+			dev->trans_start = jiffies;
+			ei_local->tx2 = -1,
+			ei_local->lasttx = 2;
+		}
+		else ei_local->lasttx = 20, ei_local->txing = 0;	
+	}
+	else if (ei_local->tx2 < 0) 
+	{
+		if (ei_local->lasttx != 2  &&  ei_local->lasttx != -2)
+			printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
+				ei_local->name, ei_local->lasttx, ei_local->tx2);
+		ei_local->tx2 = 0;
+		if (ei_local->tx1 > 0) 
+		{
+			ei_local->txing = 1;
+			NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
+			dev->trans_start = jiffies;
+			ei_local->tx1 = -1;
+			ei_local->lasttx = 1;
+		}
+		else
+			ei_local->lasttx = 10, ei_local->txing = 0;
+	}
+//	else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
+//			dev->name, ei_local->lasttx);
+
+	/* Minimize Tx latency: update the statistics after we restart TXing. */
+	if (status & ENTSR_COL)
+		ei_local->stat.collisions++;
+	if (status & ENTSR_PTX)
+		ei_local->stat.tx_packets++;
+	else 
+	{
+		ei_local->stat.tx_errors++;
+		if (status & ENTSR_ABT) 
+		{
+			ei_local->stat.tx_aborted_errors++;
+			ei_local->stat.collisions += 16;
+		}
+		if (status & ENTSR_CRS) 
+			ei_local->stat.tx_carrier_errors++;
+		if (status & ENTSR_FU) 
+			ei_local->stat.tx_fifo_errors++;
+		if (status & ENTSR_CDH)
+			ei_local->stat.tx_heartbeat_errors++;
+		if (status & ENTSR_OWC)
+			ei_local->stat.tx_window_errors++;
+	}
+	netif_wake_queue(dev);
+}
+
+/**
+ * ei_receive - receive some packets
+ * @dev: network device with which receive will be run
+ *
+ * We have a good packet(s), get it/them out of the buffers. 
+ * Called with lock held.
+ */
+
+static void ei_receive(struct net_device *dev)
+{
+	long e8390_base = dev->base_addr;
+	struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
+	unsigned char rxing_page, this_frame, next_frame;
+	unsigned short current_offset;
+	int rx_pkt_count = 0;
+	struct e8390_pkt_hdr rx_frame;
+    
+	while (++rx_pkt_count < 10) 
+	{
+		int pkt_len, pkt_stat;
+		
+		/* Get the rx page (incoming packet pointer). */
+		rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
+		
+		/* Remove one frame from the ring.  Boundary is always a page behind. */
+		this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
+		if (this_frame >= ei_local->stop_page)
+			this_frame = ei_local->rx_start_page;
+		
+		/* Someday we'll omit the previous, iff we never get this message.
+		   (There is at least one clone claimed to have a problem.)  
+		   
+		   Keep quiet if it looks like a card removal. One problem here
+		   is that some clones crash in roughly the same way.
+		 */
+		if (ei_debug > 0  &&  this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
+			printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
+				   dev->name, this_frame, ei_local->current_page);
+		
+		if (this_frame == rxing_page)	/* Read all the frames? */
+			break;				/* Done for now */
+		
+		current_offset = this_frame << 8;
+		ei_get_8390_hdr(dev, &rx_frame, this_frame);
+		
+		pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
+		pkt_stat = rx_frame.status;
+		
+		next_frame = this_frame + 1 + ((pkt_len+4)>>8);
+		
+		if (pkt_len < 60  ||  pkt_len > 1518) 
+		{
+			if (ei_debug)
+				printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
+					   dev->name, rx_frame.count, rx_frame.status,
+					   rx_frame.next);
+			ei_local->stat.rx_errors++;
+			ei_local->stat.rx_length_errors++;
+		}
+		 else if ((pkt_stat & 0x0F) == ENRSR_RXOK) 
+		{
+			struct sk_buff *skb;
+			
+			skb = dev_alloc_skb(pkt_len+2);
+			if (skb == NULL) 
+			{
+				if (ei_debug > 1)
+					printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
+						   dev->name, pkt_len);
+				ei_local->stat.rx_dropped++;
+				break;
+			}
+			else
+			{
+				skb_reserve(skb,2);	/* IP headers on 16 byte boundaries */
+				skb->dev = dev;
+				skb_put(skb, pkt_len);	/* Make room */
+				ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
+				skb->protocol=eth_type_trans(skb,dev);
+				netif_rx(skb);
+				dev->last_rx = jiffies;
+				ei_local->stat.rx_packets++;
+				ei_local->stat.rx_bytes += pkt_len;
+				if (pkt_stat & ENRSR_PHY)
+					ei_local->stat.multicast++;
+			}
+		} 
+		else 
+		{
+			if (ei_debug)
+				printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
+					   dev->name, rx_frame.status, rx_frame.next,
+					   rx_frame.count);
+			ei_local->stat.rx_errors++;
+			/* NB: The NIC counts CRC, frame and missed errors. */
+			if (pkt_stat & ENRSR_FO)
+				ei_local->stat.rx_fifo_errors++;
+		}
+		next_frame = rx_frame.next;
+		
+		/* This _should_ never happen: it's here for avoiding bad clones. */
+		if (next_frame >= ei_local->stop_page) {
+			printk("%s: next frame inconsistency, %#2x\n", dev->name,
+				   next_frame);
+			next_frame = ei_local->rx_start_page;
+		}
+		ei_local->current_page = next_frame;
+		outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
+	}
+
+	return;
+}
+
+/**
+ * ei_rx_overrun - handle receiver overrun
+ * @dev: network device which threw exception
+ *
+ * We have a receiver overrun: we have to kick the 8390 to get it started
+ * again. Problem is that you have to kick it exactly as NS prescribes in
+ * the updated datasheets, or "the NIC may act in an unpredictable manner."
+ * This includes causing "the NIC to defer indefinitely when it is stopped
+ * on a busy network."  Ugh.
+ * Called with lock held. Don't call this with the interrupts off or your
+ * computer will hate you - it takes 10ms or so. 
+ */
+
+static void ei_rx_overrun(struct net_device *dev)
+{
+	axnet_dev_t *info = (axnet_dev_t *)dev;
+	long e8390_base = dev->base_addr;
+	unsigned char was_txing, must_resend = 0;
+	struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
+    
+	/*
+	 * Record whether a Tx was in progress and then issue the
+	 * stop command.
+	 */
+	was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
+	outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
+    
+	if (ei_debug > 1)
+		printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
+	ei_local->stat.rx_over_errors++;
+    
+	/* 
+	 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
+	 * Early datasheets said to poll the reset bit, but now they say that
+	 * it "is not a reliable indicator and subsequently should be ignored."
+	 * We wait at least 10ms.
+	 */
+
+	mdelay(10);
+
+	/*
+	 * Reset RBCR[01] back to zero as per magic incantation.
+	 */
+	outb_p(0x00, e8390_base+EN0_RCNTLO);
+	outb_p(0x00, e8390_base+EN0_RCNTHI);
+
+	/*
+	 * See if any Tx was interrupted or not. According to NS, this
+	 * step is vital, and skipping it will cause no end of havoc.
+	 */
+
+	if (was_txing)
+	{ 
+		unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
+		if (!tx_completed)
+			must_resend = 1;
+	}
+
+	/*
+	 * Have to enter loopback mode and then restart the NIC before
+	 * you are allowed to slurp packets up off the ring.
+	 */
+	outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
+	outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
+
+	/*
+	 * Clear the Rx ring of all the debris, and ack the interrupt.
+	 */
+	ei_receive(dev);
+
+	/*
+	 * Leave loopback mode, and resend any packet that got stopped.
+	 */
+	outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR); 
+	if (must_resend)
+    		outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
+}
+
+/*
+ *	Collect the stats. This is called unlocked and from several contexts.
+ */
+ 
+static struct net_device_stats *get_stats(struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+	struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
+	unsigned long flags;
+    
+	/* If the card is stopped, just return the present stats. */
+	if (!netif_running(dev))
+		return &ei_local->stat;
+
+	spin_lock_irqsave(&ei_local->page_lock,flags);
+	/* Read the counter registers, assuming we are in page 0. */
+	ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
+	ei_local->stat.rx_crc_errors   += inb_p(ioaddr + EN0_COUNTER1);
+	ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
+	spin_unlock_irqrestore(&ei_local->page_lock, flags);
+    
+	return &ei_local->stat;
+}
+
+/**
+ * do_set_multicast_list - set/clear multicast filter
+ * @dev: net device for which multicast filter is adjusted
+ *
+ *	Set or clear the multicast filter for this adaptor. May be called
+ *	from a BH in 2.1.x. Must be called with lock held. 
+ */
+ 
+static void do_set_multicast_list(struct net_device *dev)
+{
+	long e8390_base = dev->base_addr;
+
+  	if(dev->flags&IFF_PROMISC)
+  		outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
+	else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
+  		outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
+  	else
+  		outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
+}
+
+/*
+ *	Called without lock held. This is invoked from user context and may
+ *	be parallel to just about everything else. Its also fairly quick and
+ *	not called too often. Must protect against both bh and irq users
+ */
+
+static void set_multicast_list(struct net_device *dev)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev_lock(dev), flags);
+	do_set_multicast_list(dev);
+	spin_unlock_irqrestore(&dev_lock(dev), flags);
+}	
+
+/**
+ * axdev_setup - init rest of 8390 device struct
+ * @dev: network device structure to init
+ *
+ * Initialize the rest of the 8390 device structure.  Do NOT __init
+ * this, as it is used by 8390 based modular drivers too.
+ */
+
+static void axdev_setup(struct net_device *dev)
+{
+	struct ei_device *ei_local;
+	if (ei_debug > 1)
+		printk(version_8390);
+    
+	SET_MODULE_OWNER(dev);
+
+		
+	ei_local = (struct ei_device *)netdev_priv(dev);
+	spin_lock_init(&ei_local->page_lock);
+    
+	dev->hard_start_xmit = &ei_start_xmit;
+	dev->get_stats	= get_stats;
+	dev->set_multicast_list = &set_multicast_list;
+
+	ether_setup(dev);
+}
+
+/* This page of functions should be 8390 generic */
+/* Follow National Semi's recommendations for initializing the "NIC". */
+
+/**
+ * AX88190_init - initialize 8390 hardware
+ * @dev: network device to initialize
+ * @startp: boolean.  non-zero value to initiate chip processing
+ *
+ *	Must be called with lock held.
+ */
+
+static void AX88190_init(struct net_device *dev, int startp)
+{
+	axnet_dev_t *info = PRIV(dev);
+	long e8390_base = dev->base_addr;
+	struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
+	int i;
+	int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
+    
+	if(sizeof(struct e8390_pkt_hdr)!=4)
+    		panic("8390.c: header struct mispacked\n");    
+	/* Follow National Semi's recommendations for initing the DP83902. */
+	outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
+	outb_p(endcfg, e8390_base + EN0_DCFG);	/* 0x48 or 0x49 */
+	/* Clear the remote byte count registers. */
+	outb_p(0x00,  e8390_base + EN0_RCNTLO);
+	outb_p(0x00,  e8390_base + EN0_RCNTHI);
+	/* Set to monitor and loopback mode -- this is vital!. */
+	outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
+	outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
+	/* Set the transmit page and receive ring. */
+	outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
+	ei_local->tx1 = ei_local->tx2 = 0;
+	outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
+	outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY);	/* 3c503 says 0x3f,NS0x26*/
+	ei_local->current_page = ei_local->rx_start_page;		/* assert boundary+1 */
+	outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
+	/* Clear the pending interrupts and mask. */
+	outb_p(0xFF, e8390_base + EN0_ISR);
+	outb_p(0x00,  e8390_base + EN0_IMR);
+    
+	/* Copy the station address into the DS8390 registers. */
+
+	outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
+	for(i = 0; i < 6; i++) 
+	{
+		outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
+		if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
+			printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
+	}
+	/*
+	 * Initialize the multicast list to accept-all.  If we enable multicast
+	 * the higher levels can do the filtering.
+	 */
+	for (i = 0; i < 8; i++)
+		outb_p(0xff, e8390_base + EN1_MULT + i);
+
+	outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
+	outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
+
+	netif_start_queue(dev);
+	ei_local->tx1 = ei_local->tx2 = 0;
+	ei_local->txing = 0;
+
+	if (startp) 
+	{
+		outb_p(0xff,  e8390_base + EN0_ISR);
+		outb_p(ENISR_ALL,  e8390_base + EN0_IMR);
+		outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
+		outb_p(E8390_TXCONFIG | info->duplex_flag,
+		       e8390_base + EN0_TXCR); /* xmit on. */
+		/* 3c503 TechMan says rxconfig only after the NIC is started. */
+		outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
+		do_set_multicast_list(dev);	/* (re)load the mcast table */
+	}
+}
+
+/* Trigger a transmit start, assuming the length is valid. 
+   Always called with the page lock held */
+   
+static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
+								int start_page)
+{
+	long e8390_base = dev->base_addr;
+ 	struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
+    
+	if (inb_p(e8390_base) & E8390_TRANS) 
+	{
+		printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
+			dev->name);
+		return;
+	}
+	outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
+	outb_p(length >> 8, e8390_base + EN0_TCNTHI);
+	outb_p(start_page, e8390_base + EN0_TPSR);
+	outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);
+}