+++ /dev/null
-/* ======================================================================
- *
- * A PCMCIA ethernet driver for the 3com 3c589 card.
- *
- * Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net
- *
- * 3c589_cs.c 1.162 2001/10/13 00:08:50
- *
- * The network driver code is based on Donald Becker's 3c589 code:
- *
- * Written 1994 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
- *
- * Updated for 2.5.x by Alan Cox <alan@lxorguk.ukuu.org.uk>
- *
- * ======================================================================
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#define DRV_NAME "3c589_cs"
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <linux/ethtool.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-#include <linux/bitops.h>
-#include <linux/jiffies.h>
-#include <linux/uaccess.h>
-#include <linux/io.h>
-
-#include <pcmcia/cistpl.h>
-#include <pcmcia/cisreg.h>
-#include <pcmcia/ciscode.h>
-#include <pcmcia/ds.h>
-
-
-/* To minimize the size of the driver source I only define operating
- * constants if they are used several times. You'll need the manual
- * if you want to understand driver details.
- */
-
-/* Offsets from base I/O address. */
-#define EL3_DATA 0x00
-#define EL3_TIMER 0x0a
-#define EL3_CMD 0x0e
-#define EL3_STATUS 0x0e
-
-#define EEPROM_READ 0x0080
-#define EEPROM_BUSY 0x8000
-
-#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
-
-/* The top five bits written to EL3_CMD are a command, the lower
- * 11 bits are the parameter, if applicable.
- */
-
-enum c509cmd {
- TotalReset = 0<<11,
- SelectWindow = 1<<11,
- StartCoax = 2<<11,
- RxDisable = 3<<11,
- RxEnable = 4<<11,
- RxReset = 5<<11,
- RxDiscard = 8<<11,
- TxEnable = 9<<11,
- TxDisable = 10<<11,
- TxReset = 11<<11,
- FakeIntr = 12<<11,
- AckIntr = 13<<11,
- SetIntrEnb = 14<<11,
- SetStatusEnb = 15<<11,
- SetRxFilter = 16<<11,
- SetRxThreshold = 17<<11,
- SetTxThreshold = 18<<11,
- SetTxStart = 19<<11,
- StatsEnable = 21<<11,
- StatsDisable = 22<<11,
- StopCoax = 23<<11
-};
-
-enum c509status {
- IntLatch = 0x0001,
- AdapterFailure = 0x0002,
- TxComplete = 0x0004,
- TxAvailable = 0x0008,
- RxComplete = 0x0010,
- RxEarly = 0x0020,
- IntReq = 0x0040,
- StatsFull = 0x0080,
- CmdBusy = 0x1000
-};
-
-/* The SetRxFilter command accepts the following classes: */
-enum RxFilter {
- RxStation = 1,
- RxMulticast = 2,
- RxBroadcast = 4,
- RxProm = 8
-};
-
-/* Register window 1 offsets, the window used in normal operation. */
-#define TX_FIFO 0x00
-#define RX_FIFO 0x00
-#define RX_STATUS 0x08
-#define TX_STATUS 0x0B
-#define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
-
-#define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
-#define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
-#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
-#define MEDIA_LED 0x0001 /* Enable link light on 3C589E cards. */
-
-/* Time in jiffies before concluding Tx hung */
-#define TX_TIMEOUT ((400*HZ)/1000)
-
-struct el3_private {
- struct pcmcia_device *p_dev;
- /* For transceiver monitoring */
- struct timer_list media;
- u16 media_status;
- u16 fast_poll;
- unsigned long last_irq;
- spinlock_t lock;
-};
-
-static const char *if_names[] = { "auto", "10baseT", "10base2", "AUI" };
-
-/*====================================================================*/
-
-/* Module parameters */
-
-MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
-MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
-MODULE_LICENSE("GPL");
-
-#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
-
-/* Special hook for setting if_port when module is loaded */
-INT_MODULE_PARM(if_port, 0);
-
-
-/*====================================================================*/
-
-static int tc589_config(struct pcmcia_device *link);
-static void tc589_release(struct pcmcia_device *link);
-
-static u16 read_eeprom(unsigned int ioaddr, int index);
-static void tc589_reset(struct net_device *dev);
-static void media_check(struct timer_list *t);
-static int el3_config(struct net_device *dev, struct ifmap *map);
-static int el3_open(struct net_device *dev);
-static netdev_tx_t el3_start_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static irqreturn_t el3_interrupt(int irq, void *dev_id);
-static void update_stats(struct net_device *dev);
-static struct net_device_stats *el3_get_stats(struct net_device *dev);
-static int el3_rx(struct net_device *dev);
-static int el3_close(struct net_device *dev);
-static void el3_tx_timeout(struct net_device *dev, unsigned int txqueue);
-static void set_rx_mode(struct net_device *dev);
-static void set_multicast_list(struct net_device *dev);
-static const struct ethtool_ops netdev_ethtool_ops;
-
-static void tc589_detach(struct pcmcia_device *p_dev);
-
-static const struct net_device_ops el3_netdev_ops = {
- .ndo_open = el3_open,
- .ndo_stop = el3_close,
- .ndo_start_xmit = el3_start_xmit,
- .ndo_tx_timeout = el3_tx_timeout,
- .ndo_set_config = el3_config,
- .ndo_get_stats = el3_get_stats,
- .ndo_set_rx_mode = set_multicast_list,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static int tc589_probe(struct pcmcia_device *link)
-{
- struct el3_private *lp;
- struct net_device *dev;
- int ret;
-
- dev_dbg(&link->dev, "3c589_attach()\n");
-
- /* Create new ethernet device */
- dev = alloc_etherdev(sizeof(struct el3_private));
- if (!dev)
- return -ENOMEM;
- lp = netdev_priv(dev);
- link->priv = dev;
- lp->p_dev = link;
-
- spin_lock_init(&lp->lock);
- link->resource[0]->end = 16;
- link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16;
-
- link->config_flags |= CONF_ENABLE_IRQ;
- link->config_index = 1;
-
- dev->netdev_ops = &el3_netdev_ops;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- dev->ethtool_ops = &netdev_ethtool_ops;
-
- ret = tc589_config(link);
- if (ret)
- goto err_free_netdev;
-
- return 0;
-
-err_free_netdev:
- free_netdev(dev);
- return ret;
-}
-
-static void tc589_detach(struct pcmcia_device *link)
-{
- struct net_device *dev = link->priv;
-
- dev_dbg(&link->dev, "3c589_detach\n");
-
- unregister_netdev(dev);
-
- tc589_release(link);
-
- free_netdev(dev);
-} /* tc589_detach */
-
-static int tc589_config(struct pcmcia_device *link)
-{
- struct net_device *dev = link->priv;
- int ret, i, j, multi = 0, fifo;
- __be16 addr[ETH_ALEN / 2];
- unsigned int ioaddr;
- static const char * const ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
- u8 *buf;
- size_t len;
-
- dev_dbg(&link->dev, "3c589_config\n");
-
- /* Is this a 3c562? */
- if (link->manf_id != MANFID_3COM)
- dev_info(&link->dev, "hmmm, is this really a 3Com card??\n");
- multi = (link->card_id == PRODID_3COM_3C562);
-
- link->io_lines = 16;
-
- /* For the 3c562, the base address must be xx00-xx7f */
- for (i = j = 0; j < 0x400; j += 0x10) {
- if (multi && (j & 0x80))
- continue;
- link->resource[0]->start = j ^ 0x300;
- i = pcmcia_request_io(link);
- if (i == 0)
- break;
- }
- if (i != 0)
- goto failed;
-
- ret = pcmcia_request_irq(link, el3_interrupt);
- if (ret)
- goto failed;
-
- ret = pcmcia_enable_device(link);
- if (ret)
- goto failed;
-
- dev->irq = link->irq;
- dev->base_addr = link->resource[0]->start;
- ioaddr = dev->base_addr;
- EL3WINDOW(0);
-
- /* The 3c589 has an extra EEPROM for configuration info, including
- * the hardware address. The 3c562 puts the address in the CIS.
- */
- len = pcmcia_get_tuple(link, 0x88, &buf);
- if (buf && len >= 6) {
- for (i = 0; i < 3; i++)
- addr[i] = htons(le16_to_cpu(buf[i*2]));
- kfree(buf);
- } else {
- kfree(buf); /* 0 < len < 6 */
- for (i = 0; i < 3; i++)
- addr[i] = htons(read_eeprom(ioaddr, i));
- if (addr[0] == htons(0x6060)) {
- dev_err(&link->dev, "IO port conflict at 0x%03lx-0x%03lx\n",
- dev->base_addr, dev->base_addr+15);
- goto failed;
- }
- }
- eth_hw_addr_set(dev, (u8 *)addr);
-
- /* The address and resource configuration register aren't loaded from
- * the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version.
- */
-
- outw(0x3f00, ioaddr + 8);
- fifo = inl(ioaddr);
-
- /* The if_port symbol can be set when the module is loaded */
- if ((if_port >= 0) && (if_port <= 3))
- dev->if_port = if_port;
- else
- dev_err(&link->dev, "invalid if_port requested\n");
-
- SET_NETDEV_DEV(dev, &link->dev);
-
- if (register_netdev(dev) != 0) {
- dev_err(&link->dev, "register_netdev() failed\n");
- goto failed;
- }
-
- netdev_info(dev, "3Com 3c%s, io %#3lx, irq %d, hw_addr %pM\n",
- (multi ? "562" : "589"), dev->base_addr, dev->irq,
- dev->dev_addr);
- netdev_info(dev, " %dK FIFO split %s Rx:Tx, %s xcvr\n",
- (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
- if_names[dev->if_port]);
- return 0;
-
-failed:
- tc589_release(link);
- return -ENODEV;
-} /* tc589_config */
-
-static void tc589_release(struct pcmcia_device *link)
-{
- pcmcia_disable_device(link);
-}
-
-static int tc589_suspend(struct pcmcia_device *link)
-{
- struct net_device *dev = link->priv;
-
- if (link->open)
- netif_device_detach(dev);
-
- return 0;
-}
-
-static int tc589_resume(struct pcmcia_device *link)
-{
- struct net_device *dev = link->priv;
-
- if (link->open) {
- tc589_reset(dev);
- netif_device_attach(dev);
- }
-
- return 0;
-}
-
-/*====================================================================*/
-
-/* Use this for commands that may take time to finish */
-
-static void tc589_wait_for_completion(struct net_device *dev, int cmd)
-{
- int i = 100;
- outw(cmd, dev->base_addr + EL3_CMD);
- while (--i > 0)
- if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000))
- break;
- if (i == 0)
- netdev_warn(dev, "command 0x%04x did not complete!\n", cmd);
-}
-
-/* Read a word from the EEPROM using the regular EEPROM access register.
- * Assume that we are in register window zero.
- */
-
-static u16 read_eeprom(unsigned int ioaddr, int index)
-{
- int i;
- outw(EEPROM_READ + index, ioaddr + 10);
- /* Reading the eeprom takes 162 us */
- for (i = 1620; i >= 0; i--)
- if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
- break;
- return inw(ioaddr + 12);
-}
-
-/* Set transceiver type, perhaps to something other than what the user
- * specified in dev->if_port.
- */
-
-static void tc589_set_xcvr(struct net_device *dev, int if_port)
-{
- struct el3_private *lp = netdev_priv(dev);
- unsigned int ioaddr = dev->base_addr;
-
- EL3WINDOW(0);
- switch (if_port) {
- case 0:
- case 1:
- outw(0, ioaddr + 6);
- break;
- case 2:
- outw(3<<14, ioaddr + 6);
- break;
- case 3:
- outw(1<<14, ioaddr + 6);
- break;
- }
- /* On PCMCIA, this just turns on the LED */
- outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
- /* 10baseT interface, enable link beat and jabber check. */
- EL3WINDOW(4);
- outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
- EL3WINDOW(1);
- if (if_port == 2)
- lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
- else
- lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
-}
-
-static void dump_status(struct net_device *dev)
-{
- unsigned int ioaddr = dev->base_addr;
- EL3WINDOW(1);
- netdev_info(dev, " irq status %04x, rx status %04x, tx status %02x tx free %04x\n",
- inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS),
- inb(ioaddr+TX_STATUS), inw(ioaddr+TX_FREE));
- EL3WINDOW(4);
- netdev_info(dev, " diagnostics: fifo %04x net %04x ethernet %04x media %04x\n",
- inw(ioaddr+0x04), inw(ioaddr+0x06), inw(ioaddr+0x08),
- inw(ioaddr+0x0a));
- EL3WINDOW(1);
-}
-
-/* Reset and restore all of the 3c589 registers. */
-static void tc589_reset(struct net_device *dev)
-{
- unsigned int ioaddr = dev->base_addr;
- int i;
-
- EL3WINDOW(0);
- outw(0x0001, ioaddr + 4); /* Activate board. */
- outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
-
- /* Set the station address in window 2. */
- EL3WINDOW(2);
- for (i = 0; i < 6; i++)
- outb(dev->dev_addr[i], ioaddr + i);
-
- tc589_set_xcvr(dev, dev->if_port);
-
- /* Switch to the stats window, and clear all stats by reading. */
- outw(StatsDisable, ioaddr + EL3_CMD);
- EL3WINDOW(6);
- for (i = 0; i < 9; i++)
- inb(ioaddr+i);
- inw(ioaddr + 10);
- inw(ioaddr + 12);
-
- /* Switch to register set 1 for normal use. */
- EL3WINDOW(1);
-
- set_rx_mode(dev);
- outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
- outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
- outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
- /* Allow status bits to be seen. */
- outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
- /* Ack all pending events, and set active indicator mask. */
- outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
- ioaddr + EL3_CMD);
- outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
- | AdapterFailure, ioaddr + EL3_CMD);
-}
-
-static void netdev_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- strscpy(info->driver, DRV_NAME, sizeof(info->driver));
- snprintf(info->bus_info, sizeof(info->bus_info),
- "PCMCIA 0x%lx", dev->base_addr);
-}
-
-static const struct ethtool_ops netdev_ethtool_ops = {
- .get_drvinfo = netdev_get_drvinfo,
-};
-
-static int el3_config(struct net_device *dev, struct ifmap *map)
-{
- if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
- if (map->port <= 3) {
- WRITE_ONCE(dev->if_port, map->port);
- netdev_info(dev, "switched to %s port\n", if_names[dev->if_port]);
- tc589_set_xcvr(dev, dev->if_port);
- } else {
- return -EINVAL;
- }
- }
- return 0;
-}
-
-static int el3_open(struct net_device *dev)
-{
- struct el3_private *lp = netdev_priv(dev);
- struct pcmcia_device *link = lp->p_dev;
-
- if (!pcmcia_dev_present(link))
- return -ENODEV;
-
- link->open++;
- netif_start_queue(dev);
-
- tc589_reset(dev);
- timer_setup(&lp->media, media_check, 0);
- mod_timer(&lp->media, jiffies + HZ);
-
- dev_dbg(&link->dev, "%s: opened, status %4.4x.\n",
- dev->name, inw(dev->base_addr + EL3_STATUS));
-
- return 0;
-}
-
-static void el3_tx_timeout(struct net_device *dev, unsigned int txqueue)
-{
- unsigned int ioaddr = dev->base_addr;
-
- netdev_warn(dev, "Transmit timed out!\n");
- dump_status(dev);
- dev->stats.tx_errors++;
- netif_trans_update(dev); /* prevent tx timeout */
- /* Issue TX_RESET and TX_START commands. */
- tc589_wait_for_completion(dev, TxReset);
- outw(TxEnable, ioaddr + EL3_CMD);
- netif_wake_queue(dev);
-}
-
-static void pop_tx_status(struct net_device *dev)
-{
- unsigned int ioaddr = dev->base_addr;
- int i;
-
- /* Clear the Tx status stack. */
- for (i = 32; i > 0; i--) {
- u_char tx_status = inb(ioaddr + TX_STATUS);
- if (!(tx_status & 0x84))
- break;
- /* reset transmitter on jabber error or underrun */
- if (tx_status & 0x30)
- tc589_wait_for_completion(dev, TxReset);
- if (tx_status & 0x38) {
- netdev_dbg(dev, "transmit error: status 0x%02x\n", tx_status);
- outw(TxEnable, ioaddr + EL3_CMD);
- dev->stats.tx_aborted_errors++;
- }
- outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
- }
-}
-
-static netdev_tx_t el3_start_xmit(struct sk_buff *skb,
- struct net_device *dev)
-{
- unsigned int ioaddr = dev->base_addr;
- struct el3_private *priv = netdev_priv(dev);
- unsigned long flags;
-
- netdev_dbg(dev, "el3_start_xmit(length = %ld) called, status %4.4x.\n",
- (long)skb->len, inw(ioaddr + EL3_STATUS));
-
- spin_lock_irqsave(&priv->lock, flags);
-
- dev->stats.tx_bytes += skb->len;
-
- /* Put out the doubleword header... */
- outw(skb->len, ioaddr + TX_FIFO);
- outw(0x00, ioaddr + TX_FIFO);
- /* ... and the packet rounded to a doubleword. */
- outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
-
- if (inw(ioaddr + TX_FREE) <= 1536) {
- netif_stop_queue(dev);
- /* Interrupt us when the FIFO has room for max-sized packet. */
- outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
- }
-
- pop_tx_status(dev);
- spin_unlock_irqrestore(&priv->lock, flags);
- dev_kfree_skb(skb);
-
- return NETDEV_TX_OK;
-}
-
-/* The EL3 interrupt handler. */
-static irqreturn_t el3_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct el3_private *lp = netdev_priv(dev);
- unsigned int ioaddr;
- __u16 status;
- int i = 0, handled = 1;
-
- if (!netif_device_present(dev))
- return IRQ_NONE;
-
- ioaddr = dev->base_addr;
-
- netdev_dbg(dev, "interrupt, status %4.4x.\n", inw(ioaddr + EL3_STATUS));
-
- spin_lock(&lp->lock);
- while ((status = inw(ioaddr + EL3_STATUS)) &
- (IntLatch | RxComplete | StatsFull)) {
- if ((status & 0xe000) != 0x2000) {
- netdev_dbg(dev, "interrupt from dead card\n");
- handled = 0;
- break;
- }
- if (status & RxComplete)
- el3_rx(dev);
- if (status & TxAvailable) {
- netdev_dbg(dev, " TX room bit was handled.\n");
- /* There's room in the FIFO for a full-sized packet. */
- outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
- netif_wake_queue(dev);
- }
- if (status & TxComplete)
- pop_tx_status(dev);
- if (status & (AdapterFailure | RxEarly | StatsFull)) {
- /* Handle all uncommon interrupts. */
- if (status & StatsFull) /* Empty statistics. */
- update_stats(dev);
- if (status & RxEarly) {
- /* Rx early is unused. */
- el3_rx(dev);
- outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
- }
- if (status & AdapterFailure) {
- u16 fifo_diag;
- EL3WINDOW(4);
- fifo_diag = inw(ioaddr + 4);
- EL3WINDOW(1);
- netdev_warn(dev, "adapter failure, FIFO diagnostic register %04x.\n",
- fifo_diag);
- if (fifo_diag & 0x0400) {
- /* Tx overrun */
- tc589_wait_for_completion(dev, TxReset);
- outw(TxEnable, ioaddr + EL3_CMD);
- }
- if (fifo_diag & 0x2000) {
- /* Rx underrun */
- tc589_wait_for_completion(dev, RxReset);
- set_rx_mode(dev);
- outw(RxEnable, ioaddr + EL3_CMD);
- }
- outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
- }
- }
- if (++i > 10) {
- netdev_err(dev, "infinite loop in interrupt, status %4.4x.\n",
- status);
- /* Clear all interrupts */
- outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
- break;
- }
- /* Acknowledge the IRQ. */
- outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
- }
- lp->last_irq = jiffies;
- spin_unlock(&lp->lock);
- netdev_dbg(dev, "exiting interrupt, status %4.4x.\n",
- inw(ioaddr + EL3_STATUS));
- return IRQ_RETVAL(handled);
-}
-
-static void media_check(struct timer_list *t)
-{
- struct el3_private *lp = timer_container_of(lp, t, media);
- struct net_device *dev = lp->p_dev->priv;
- unsigned int ioaddr = dev->base_addr;
- u16 media, errs;
- unsigned long flags;
-
- 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 ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
- (inb(ioaddr + EL3_TIMER) == 0xff)) {
- if (!lp->fast_poll)
- netdev_warn(dev, "interrupt(s) dropped!\n");
-
- local_irq_save(flags);
- el3_interrupt(dev->irq, dev);
- local_irq_restore(flags);
-
- lp->fast_poll = HZ;
- }
- if (lp->fast_poll) {
- lp->fast_poll--;
- lp->media.expires = jiffies + HZ/100;
- add_timer(&lp->media);
- return;
- }
-
- /* lp->lock guards the EL3 window. Window should always be 1 except
- * when the lock is held
- */
-
- spin_lock_irqsave(&lp->lock, flags);
- EL3WINDOW(4);
- media = inw(ioaddr+WN4_MEDIA) & 0xc810;
-
- /* Ignore collisions unless we've had no irq's recently */
- if (time_before(jiffies, lp->last_irq + HZ)) {
- media &= ~0x0010;
- } else {
- /* Try harder to detect carrier errors */
- EL3WINDOW(6);
- outw(StatsDisable, ioaddr + EL3_CMD);
- errs = inb(ioaddr + 0);
- outw(StatsEnable, ioaddr + EL3_CMD);
- dev->stats.tx_carrier_errors += errs;
- if (errs || (lp->media_status & 0x0010))
- media |= 0x0010;
- }
-
- if (media != lp->media_status) {
- if ((media & lp->media_status & 0x8000) &&
- ((lp->media_status ^ media) & 0x0800))
- netdev_info(dev, "%s link beat\n",
- (lp->media_status & 0x0800 ? "lost" : "found"));
- else if ((media & lp->media_status & 0x4000) &&
- ((lp->media_status ^ media) & 0x0010))
- netdev_info(dev, "coax cable %s\n",
- (lp->media_status & 0x0010 ? "ok" : "problem"));
- if (dev->if_port == 0) {
- if (media & 0x8000) {
- if (media & 0x0800)
- netdev_info(dev, "flipped to 10baseT\n");
- else
- tc589_set_xcvr(dev, 2);
- } else if (media & 0x4000) {
- if (media & 0x0010)
- tc589_set_xcvr(dev, 1);
- else
- netdev_info(dev, "flipped to 10base2\n");
- }
- }
- lp->media_status = media;
- }
-
- EL3WINDOW(1);
- spin_unlock_irqrestore(&lp->lock, flags);
-
-reschedule:
- lp->media.expires = jiffies + HZ;
- add_timer(&lp->media);
-}
-
-static struct net_device_stats *el3_get_stats(struct net_device *dev)
-{
- struct el3_private *lp = netdev_priv(dev);
- unsigned long flags;
- struct pcmcia_device *link = lp->p_dev;
-
- if (pcmcia_dev_present(link)) {
- spin_lock_irqsave(&lp->lock, flags);
- update_stats(dev);
- spin_unlock_irqrestore(&lp->lock, flags);
- }
- return &dev->stats;
-}
-
-/* Update statistics. We change to register window 6, so this should be run
-* single-threaded if the device is active. This is expected to be a rare
-* operation, and it's simpler for the rest of the driver to assume that
-* window 1 is always valid rather than use a special window-state variable.
-*
-* Caller must hold the lock for this
-*/
-
-static void update_stats(struct net_device *dev)
-{
- unsigned int ioaddr = dev->base_addr;
-
- netdev_dbg(dev, "updating the statistics.\n");
- /* Turn off statistics updates while reading. */
- outw(StatsDisable, ioaddr + EL3_CMD);
- /* Switch to the stats window, and read everything. */
- EL3WINDOW(6);
- dev->stats.tx_carrier_errors += inb(ioaddr + 0);
- dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
- /* Multiple collisions. */
- inb(ioaddr + 2);
- dev->stats.collisions += inb(ioaddr + 3);
- dev->stats.tx_window_errors += inb(ioaddr + 4);
- dev->stats.rx_fifo_errors += inb(ioaddr + 5);
- dev->stats.tx_packets += inb(ioaddr + 6);
- /* Rx packets */
- inb(ioaddr + 7);
- /* Tx deferrals */
- inb(ioaddr + 8);
- /* Rx octets */
- inw(ioaddr + 10);
- /* Tx octets */
- inw(ioaddr + 12);
-
- /* Back to window 1, and turn statistics back on. */
- EL3WINDOW(1);
- outw(StatsEnable, ioaddr + EL3_CMD);
-}
-
-static int el3_rx(struct net_device *dev)
-{
- unsigned int ioaddr = dev->base_addr;
- int worklimit = 32;
- short rx_status;
-
- netdev_dbg(dev, "in rx_packet(), status %4.4x, rx_status %4.4x.\n",
- inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
- while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
- worklimit > 0) {
- worklimit--;
- if (rx_status & 0x4000) { /* Error, update stats. */
- short error = rx_status & 0x3800;
- dev->stats.rx_errors++;
- switch (error) {
- case 0x0000:
- dev->stats.rx_over_errors++;
- break;
- case 0x0800:
- dev->stats.rx_length_errors++;
- break;
- case 0x1000:
- dev->stats.rx_frame_errors++;
- break;
- case 0x1800:
- dev->stats.rx_length_errors++;
- break;
- case 0x2000:
- dev->stats.rx_frame_errors++;
- break;
- case 0x2800:
- dev->stats.rx_crc_errors++;
- break;
- }
- } else {
- short pkt_len = rx_status & 0x7ff;
- struct sk_buff *skb;
-
- skb = netdev_alloc_skb(dev, pkt_len + 5);
-
- netdev_dbg(dev, " Receiving packet size %d status %4.4x.\n",
- pkt_len, rx_status);
- if (skb != NULL) {
- skb_reserve(skb, 2);
- insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
- (pkt_len+3)>>2);
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += pkt_len;
- } else {
- netdev_dbg(dev, "couldn't allocate a sk_buff of size %d.\n",
- pkt_len);
- dev->stats.rx_dropped++;
- }
- }
- /* Pop the top of the Rx FIFO */
- tc589_wait_for_completion(dev, RxDiscard);
- }
- if (worklimit == 0)
- netdev_warn(dev, "too much work in el3_rx!\n");
- return 0;
-}
-
-static void set_rx_mode(struct net_device *dev)
-{
- unsigned int ioaddr = dev->base_addr;
- u16 opts = SetRxFilter | RxStation | RxBroadcast;
-
- if (dev->flags & IFF_PROMISC)
- opts |= RxMulticast | RxProm;
- else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI))
- opts |= RxMulticast;
- outw(opts, ioaddr + EL3_CMD);
-}
-
-static void set_multicast_list(struct net_device *dev)
-{
- struct el3_private *priv = netdev_priv(dev);
- unsigned long flags;
-
- spin_lock_irqsave(&priv->lock, flags);
- set_rx_mode(dev);
- spin_unlock_irqrestore(&priv->lock, flags);
-}
-
-static int el3_close(struct net_device *dev)
-{
- struct el3_private *lp = netdev_priv(dev);
- struct pcmcia_device *link = lp->p_dev;
- unsigned int ioaddr = dev->base_addr;
-
- dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name);
-
- if (pcmcia_dev_present(link)) {
- /* Turn off statistics ASAP. We update dev->stats below. */
- outw(StatsDisable, ioaddr + EL3_CMD);
-
- /* Disable the receiver and transmitter. */
- outw(RxDisable, ioaddr + EL3_CMD);
- outw(TxDisable, ioaddr + EL3_CMD);
-
- if (dev->if_port == 2)
- /* Turn off thinnet power. Green! */
- outw(StopCoax, ioaddr + EL3_CMD);
- else if (dev->if_port == 1) {
- /* Disable link beat and jabber */
- EL3WINDOW(4);
- outw(0, ioaddr + WN4_MEDIA);
- }
-
- /* Switching back to window 0 disables the IRQ. */
- EL3WINDOW(0);
- /* But we explicitly zero the IRQ line select anyway. */
- outw(0x0f00, ioaddr + WN0_IRQ);
-
- /* Check if the card still exists */
- if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
- update_stats(dev);
- }
-
- link->open--;
- netif_stop_queue(dev);
- timer_delete_sync(&lp->media);
-
- return 0;
-}
-
-static const struct pcmcia_device_id tc589_ids[] = {
- PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
- PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
- PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
- PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
- PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "cis/3CXEM556.cis"),
- PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "cis/3CXEM556.cis"),
- PCMCIA_DEVICE_NULL,
-};
-MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
-
-static struct pcmcia_driver tc589_driver = {
- .owner = THIS_MODULE,
- .name = "3c589_cs",
- .probe = tc589_probe,
- .remove = tc589_detach,
- .id_table = tc589_ids,
- .suspend = tc589_suspend,
- .resume = tc589_resume,
-};
-module_pcmcia_driver(tc589_driver);
projects / thirdparty / linux.git / commitdiff
