patch-2.4.15 linux/drivers/net/pcmcia/axnet_cs.c
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- Lines: 1959
- Date:
Mon Nov 12 09:35:43 2001
- Orig file:
v2.4.14/linux/drivers/net/pcmcia/axnet_cs.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.14/linux/drivers/net/pcmcia/axnet_cs.c linux/drivers/net/pcmcia/axnet_cs.c
@@ -0,0 +1,1958 @@
+/*======================================================================
+
+ 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 1.11 2001/06/12 12:42:40
+
+ 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@cesdis1.gsfc.nasa.gov
+
+======================================================================*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/byteorder.h>
+
+#include <linux/netdevice.h>
+#include "ax8390.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>
+
+#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_MISC 0x18 /* For IBM CCAE and Socket EA cards */
+#define AXNET_MII_EEP 0x14 /* Offset of MII access 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 */
+
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+MODULE_PARM(pc_debug, "i");
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version =
+"axnet_cs.c 1.11 2001/06/12 12:42:40 (David Hinds)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+#define DEV_KFREE_SKB(skb) dev_kfree_skb(skb);
+#define skb_tx_check(dev, skb)
+#define add_rx_bytes(stats, n) (stats)->rx_bytes += n;
+#define add_tx_bytes(stats, n) (stats)->tx_bytes += n;
+#define netif_mark_up(dev) do { } while (0)
+#define netif_mark_down(dev) do { } while (0)
+
+/*====================================================================*/
+
+/* Parameters that can be set with 'insmod' */
+
+#define INT_MODULE_PARM(n, v) static int n = v; MODULE_PARM(n, "i")
+
+/* Bit map of interrupts to choose from */
+INT_MODULE_PARM(irq_mask, 0xdeb8);
+static int irq_list[4] = { -1 };
+MODULE_PARM(irq_list, "1-4i");
+
+/* Ugh! Let the user hardwire the hardware address for queer cards */
+static int hw_addr[6] = { 0, /* ... */ };
+MODULE_PARM(hw_addr, "6i");
+
+/*====================================================================*/
+
+static void axnet_config(dev_link_t *link);
+static void axnet_release(u_long arg);
+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 void 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(ioaddr_t addr, int phy_id, int loc);
+static void mdio_write(ioaddr_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;
+
+/*====================================================================*/
+
+typedef struct axnet_dev_t {
+ struct net_device dev; /* so &dev == &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;
+} axnet_dev_t;
+
+/*======================================================================
+
+ This bit of code is used to avoid unregistering network devices
+ at inappropriate times. 2.2 and later kernels are fairly picky
+ about when this can happen.
+
+======================================================================*/
+
+static void flush_stale_links(void)
+{
+ dev_link_t *link, *next;
+ for (link = dev_list; link; link = next) {
+ next = link->next;
+ if (link->state & DEV_STALE_LINK)
+ axnet_detach(link);
+ }
+}
+
+/*====================================================================*/
+
+static void cs_error(client_handle_t handle, int func, int ret)
+{
+ error_info_t err = { func, ret };
+ CardServices(ReportError, handle, &err);
+}
+
+/*======================================================================
+
+ We never need to do anything when a axnet device is "initialized"
+ by the net software, because we only register already-found cards.
+
+======================================================================*/
+
+static int axnet_init(struct net_device *dev)
+{
+ return 0;
+}
+
+/*======================================================================
+
+ 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 i, ret;
+
+ DEBUG(0, "axnet_attach()\n");
+ flush_stale_links();
+
+ /* Create new ethernet device */
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) return NULL;
+ memset(info, 0, sizeof(*info));
+ link = &info->link; dev = &info->dev;
+ link->priv = info;
+
+ link->release.function = &axnet_release;
+ link->release.data = (u_long)link;
+ link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+ link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
+ if (irq_list[0] == -1)
+ link->irq.IRQInfo2 = irq_mask;
+ else
+ for (i = 0; i < 4; i++)
+ link->irq.IRQInfo2 |= 1 << irq_list[i];
+ link->conf.Attributes = CONF_ENABLE_IRQ;
+ link->conf.IntType = INT_MEMORY_AND_IO;
+
+ ethdev_init(dev);
+ dev->init = &axnet_init;
+ dev->open = &axnet_open;
+ dev->stop = &axnet_close;
+ dev->do_ioctl = &axnet_ioctl;
+
+ /* Register with Card Services */
+ link->next = dev_list;
+ dev_list = link;
+ client_reg.dev_info = &dev_info;
+ client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
+ 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 = CardServices(RegisterClient, &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)
+{
+ axnet_dev_t *info = 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;
+
+ del_timer(&link->release);
+ if (link->state & DEV_CONFIG) {
+ axnet_release((u_long)link);
+ if (link->state & DEV_STALE_CONFIG) {
+ link->state |= DEV_STALE_LINK;
+ return;
+ }
+ }
+
+ if (link->handle)
+ CardServices(DeregisterClient, link->handle);
+
+ /* Unlink device structure, free bits */
+ *linkp = link->next;
+ if (link->dev)
+ unregister_netdev(&info->dev);
+ kfree(info);
+
+} /* 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;
+ ioaddr_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, EN0_RXCR}, /* 0x20 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 */
+
+/*======================================================================
+
+ This should be totally unnecessary... but when we can't figure
+ out the hardware address any other way, we'll let the user hard
+ wire it when the module is initialized.
+
+======================================================================*/
+
+static int get_hwired(dev_link_t *link)
+{
+ struct net_device *dev = link->priv;
+ int i;
+
+ for (i = 0; i < 6; i++)
+ if (hw_addr[i] != 0) break;
+ if (i == 6)
+ return 0;
+
+ for (i = 0; i < 6; i++)
+ dev->dev_addr[i] = hw_addr[i];
+
+ return 1;
+} /* get_hwired */
+
+/*======================================================================
+
+ 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, args...) \
+while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
+
+#define CFG_CHECK(fn, args...) \
+if (CardServices(fn, args) != 0) goto next_entry
+
+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 = CardServices(RequestIO, link->handle, &link->io);
+ if (ret == CS_SUCCESS) return ret;
+ }
+ return ret;
+ } else {
+ return CardServices(RequestIO, link->handle, &link->io);
+ }
+}
+
+static void axnet_config(dev_link_t *link)
+{
+ client_handle_t handle = link->handle;
+ axnet_dev_t *info = link->priv;
+ struct net_device *dev = &info->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, handle, &tuple);
+ CS_CHECK(GetTupleData, handle, &tuple);
+ CS_CHECK(ParseTuple, handle, &tuple, &parse);
+ link->conf.ConfigBase = parse.config.base;
+ link->conf.Present = parse.config.rmask[0];
+
+ /* Configure card */
+ link->state |= DEV_CONFIG;
+
+ /* Look up current Vcc */
+ CS_CHECK(GetConfigurationInfo, handle, &conf);
+ link->conf.Vcc = conf.Vcc;
+
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ tuple.Attributes = 0;
+ CS_CHECK(GetFirstTuple, handle, &tuple);
+ while (last_ret == CS_SUCCESS) {
+ cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
+ cistpl_io_t *io = &(parse.cftable_entry.io);
+
+ CFG_CHECK(GetTupleData, handle, &tuple);
+ CFG_CHECK(ParseTuple, handle, &tuple, &parse);
+ if ((cfg->index == 0) || (cfg->io.nwin == 0))
+ goto next_entry;
+
+ link->conf.ConfigIndex = cfg->index;
+ /* 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 = CardServices(GetNextTuple, handle, &tuple);
+ }
+ if (last_ret != CS_SUCCESS) {
+ cs_error(handle, RequestIO, last_ret);
+ goto failed;
+ }
+
+ CS_CHECK(RequestIRQ, handle, &link->irq);
+
+ if (link->io.NumPorts2 == 8) {
+ link->conf.Attributes |= CONF_ENABLE_SPKR;
+ link->conf.Status = CCSR_AUDIO_ENA;
+ }
+
+ CS_CHECK(RequestConfiguration, handle, &link->conf);
+ dev->irq = link->irq.AssignedIRQ;
+ dev->base_addr = link->io.BasePort1;
+ if (register_netdev(dev) != 0) {
+ printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
+ goto failed;
+ }
+
+ if (!get_prom(link) && !get_hwired(link)) {
+ printk(KERN_NOTICE "axnet_cs: unable to read hardware net"
+ " address for io base %#3lx\n", dev->base_addr);
+ unregister_netdev(dev);
+ 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;
+
+ strcpy(info->node.dev_name, dev->name);
+ link->dev = &info->node;
+ link->state &= ~DEV_CONFIG_PENDING;
+
+ printk(KERN_INFO "%s: Asix AX88190: io %#3lx, irq %d, hw_addr ",
+ dev->name, dev->base_addr, dev->irq);
+ for (i = 0; i < 6; i++)
+ printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
+
+ 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;
+ if (i < 32) {
+ DEBUG(0, " MII transceiver at index %d, status %x.\n", i, j);
+ } else {
+ printk(KERN_NOTICE " No MII transceivers found!\n");
+ }
+
+ return;
+
+cs_failed:
+ cs_error(link->handle, last_fn, last_ret);
+failed:
+ axnet_release((u_long)link);
+ 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(u_long arg)
+{
+ dev_link_t *link = (dev_link_t *)arg;
+
+ DEBUG(0, "axnet_release(0x%p)\n", link);
+
+ if (link->open) {
+ DEBUG(1, "axnet_cs: release postponed, '%s' still open\n",
+ info->node.dev_name);
+ link->state |= DEV_STALE_CONFIG;
+ return;
+ }
+
+ CardServices(ReleaseConfiguration, link->handle);
+ CardServices(ReleaseIO, link->handle, &link->io);
+ CardServices(ReleaseIRQ, link->handle, &link->irq);
+
+ link->state &= ~DEV_CONFIG;
+
+} /* axnet_release */
+
+/*======================================================================
+
+ 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;
+ axnet_dev_t *info = 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(&info->dev);
+ mod_timer(&link->release, jiffies + HZ/20);
+ }
+ break;
+ case CS_EVENT_CARD_INSERTION:
+ link->state |= DEV_PRESENT;
+ 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(&info->dev);
+ CardServices(ReleaseConfiguration, link->handle);
+ }
+ break;
+ case CS_EVENT_PM_RESUME:
+ link->state &= ~DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_CARD_RESET:
+ if (link->state & DEV_CONFIG) {
+ CardServices(RequestConfiguration, link->handle, &link->conf);
+ if (link->open) {
+ axnet_reset_8390(&info->dev);
+ NS8390_init(&info->dev, 1);
+ netif_device_attach(&info->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(ioaddr_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(ioaddr_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(ioaddr_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 = (axnet_dev_t *)dev;
+ dev_link_t *link = &info->link;
+
+ DEBUG(2, "axnet_open('%s')\n", dev->name);
+
+ if (!DEV_OK(link))
+ return -ENODEV;
+
+ link->open++;
+ MOD_INC_USE_COUNT;
+
+ request_irq(dev->irq, ei_irq_wrapper, SA_SHIRQ, dev_info, dev);
+
+ info->link_status = 0x00;
+ info->watchdog.function = &ei_watchdog;
+ info->watchdog.data = (u_long)info;
+ info->watchdog.expires = jiffies + HZ;
+ add_timer(&info->watchdog);
+
+ return ei_open(dev);
+} /* axnet_open */
+
+/*====================================================================*/
+
+static int axnet_close(struct net_device *dev)
+{
+ axnet_dev_t *info = (axnet_dev_t *)dev;
+ dev_link_t *link = &info->link;
+
+ DEBUG(2, "axnet_close('%s')\n", dev->name);
+
+ free_irq(dev->irq, dev);
+
+ link->open--;
+ netif_stop_queue(dev);
+ netif_mark_down(dev);
+ del_timer(&info->watchdog);
+ if (link->state & DEV_STALE_CONFIG)
+ mod_timer(&link->release, jiffies + HZ/20);
+
+ MOD_DEC_USE_COUNT;
+
+ 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)
+{
+ ioaddr_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 void ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs)
+{
+ axnet_dev_t *info = dev_id;
+ info->stale = 0;
+ ei_interrupt(irq, dev_id, regs);
+}
+
+static void ei_watchdog(u_long arg)
+{
+ axnet_dev_t *info = (axnet_dev_t *)(arg);
+ struct net_device *dev = &info->dev;
+ ioaddr_t nic_base = dev->base_addr;
+ ioaddr_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);
+ NS8390_init(dev, 1);
+ }
+ info->link_status = link;
+ }
+
+reschedule:
+ info->watchdog.expires = jiffies + HZ;
+ add_timer(&info->watchdog);
+}
+
+/*====================================================================*/
+
+static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ axnet_dev_t *info = (axnet_dev_t *)dev;
+ u16 *data = (u16 *)&rq->ifr_data;
+ ioaddr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
+ switch (cmd) {
+ case SIOCDEVPRIVATE:
+ data[0] = info->phy_id;
+ case SIOCDEVPRIVATE+1:
+ data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
+ return 0;
+ case SIOCDEVPRIVATE+2:
+ 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)
+{
+ ioaddr_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)
+{
+ ioaddr_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)
+{
+ ioaddr_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 int __init init_axnet_cs(void)
+{
+ servinfo_t serv;
+ DEBUG(0, "%s\n", version);
+ CardServices(GetCardServicesInfo, &serv);
+ if (serv.Revision != CS_RELEASE_CODE) {
+ printk(KERN_NOTICE "axnet_cs: Card Services release "
+ "does not match!\n");
+ return -1;
+ }
+ register_pccard_driver(&dev_info, &axnet_attach, &axnet_detach);
+ return 0;
+}
+
+static void __exit exit_axnet_cs(void)
+{
+ DEBUG(0, "axnet_cs: unloading\n");
+ unregister_pccard_driver(&dev_info);
+ while (dev_list != NULL)
+ axnet_detach(dev_list);
+}
+
+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@CESDIS.gsfc.nasa.gov, or C/O
+ Center of Excellence in Space Data and Information Sciences
+ Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771
+
+ 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.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
+
+#include <asm/uaccess.h>
+#include <asm/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.
+ */
+
+
+
+/**
+ * ei_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 ei_open(struct net_device *dev)
+{
+ unsigned long flags;
+ struct ei_device *ei_local = (struct ei_device *) dev->priv;
+
+ /* This can't happen unless somebody forgot to call ethdev_init(). */
+ if (ei_local == NULL)
+ {
+ printk(KERN_EMERG "%s: ei_open passed a non-existent device!\n", dev->name);
+ return -ENXIO;
+ }
+
+#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);
+ NS8390_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_mark_up(dev);
+ netif_start_queue(dev);
+ spin_unlock_irqrestore(&ei_local->page_lock, flags);
+ ei_local->irqlock = 0;
+ return 0;
+}
+
+/**
+ * ei_close - shut down network device
+ * @dev: network device to close
+ *
+ * Opposite of ei_open(). Only used when "ifconfig <devname> down" is done.
+ */
+static int ei_close(struct net_device *dev)
+{
+ unsigned long flags;
+
+ /*
+ * Hold the page lock during close
+ */
+
+ spin_lock_irqsave(&((struct ei_device *)dev->priv)->page_lock, flags);
+ NS8390_init(dev, 0);
+ spin_unlock_irqrestore(&((struct ei_device *)dev->priv)->page_lock, 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 *) dev->priv;
+ 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);
+ NS8390_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 *) dev->priv;
+ int length, send_length, output_page;
+ unsigned long flags;
+
+ netif_stop_queue(dev);
+ skb_tx_check(dev, skb);
+
+ 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 dont 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;
+
+#ifdef EI_PINGPONG
+
+ /*
+ * 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_1X_PAGES;
+ 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.
+ */
+
+ ei_block_output(dev, length, skb->data, 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);
+
+#else /* EI_PINGPONG */
+
+ /*
+ * Only one Tx buffer in use. You need two Tx bufs to come close to
+ * back-to-back transmits. Expect a 20 -> 25% performance hit on
+ * reasonable hardware if you only use one Tx buffer.
+ */
+
+ ei_block_output(dev, length, skb->data, ei_local->tx_start_page);
+ ei_local->txing = 1;
+ NS8390_trigger_send(dev, send_length, ei_local->tx_start_page);
+ dev->trans_start = jiffies;
+ netif_stop_queue(dev);
+
+#endif /* EI_PINGPONG */
+
+ /* 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);
+ add_tx_bytes(&ei_local->stat, send_length);
+
+ return 0;
+}
+
+/**
+ * ei_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
+ * neccessary. We also update the counters and do other housekeeping as
+ * needed.
+ */
+
+static void ei_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;
+
+ if (dev == NULL)
+ {
+ printk ("net_interrupt(): irq %d for unknown device.\n", irq);
+ return;
+ }
+
+ e8390_base = dev->base_addr;
+ ei_local = (struct ei_device *) dev->priv;
+
+ /*
+ * 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;
+ }
+
+ 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;
+ }
+ /* 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)
+ {
+ 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;
+}
+
+/**
+ * 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 *) dev->priv;
+ 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 *) dev->priv;
+ int status = inb(e8390_base + EN0_TSR);
+
+#ifdef EI_PINGPONG
+
+ /*
+ * 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);
+
+#else /* EI_PINGPONG */
+ /*
+ * Single Tx buffer: mark it free so another packet can be loaded.
+ */
+ ei_local->txing = 0;
+#endif
+
+ /* 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 *) dev->priv;
+ 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++;
+ add_rx_bytes(&ei_local->stat, 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 *) dev->priv;
+
+ /*
+ * 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 *) dev->priv;
+ 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 | 0x18, e8390_base + EN0_RXCR);
+ else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
+ outb_p(E8390_RXCONFIG | 0x08, e8390_base + EN0_RXCR);
+ else
+ outb_p(E8390_RXCONFIG, 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(&((struct ei_device *)dev->priv)->page_lock, flags);
+ do_set_multicast_list(dev);
+ spin_unlock_irqrestore(&((struct ei_device *)dev->priv)->page_lock, flags);
+}
+
+/**
+ * ethdev_init - 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 int ethdev_init(struct net_device *dev)
+{
+ if (ei_debug > 1)
+ printk(version);
+
+ if (dev->priv == NULL)
+ {
+ struct ei_device *ei_local;
+
+ dev->priv = kmalloc(sizeof(struct ei_device), GFP_KERNEL);
+ if (dev->priv == NULL)
+ return -ENOMEM;
+ memset(dev->priv, 0, sizeof(struct ei_device));
+ ei_local = (struct ei_device *)dev->priv;
+ 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);
+
+ return 0;
+}
+
+
+
+/* This page of functions should be 8390 generic */
+/* Follow National Semi's recommendations for initializing the "NIC". */
+
+/**
+ * NS8390_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 NS8390_init(struct net_device *dev, int startp)
+{
+ axnet_dev_t *info = (axnet_dev_t *)dev;
+ long e8390_base = dev->base_addr;
+ struct ei_device *ei_local = (struct ei_device *) dev->priv;
+ 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, e8390_base + EN0_RXCR); /* 0x20 */
+ 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, 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 *) dev->priv;
+
+ 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);
+}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)