diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/3com/3c589_cs.c | 1127 |
1 files changed, 584 insertions, 543 deletions
diff --git a/drivers/net/ethernet/3com/3c589_cs.c b/drivers/net/ethernet/3com/3c589_cs.c index 5992860a39c9..063557e037f2 100644 --- a/drivers/net/ethernet/3com/3c589_cs.c +++ b/drivers/net/ethernet/3com/3c589_cs.c @@ -1,23 +1,24 @@ -/*====================================================================== - - 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> - -======================================================================*/ +/* ====================================================================== + * + * 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 @@ -41,18 +42,20 @@ #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> -#include <asm/uaccess.h> -#include <asm/io.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. */ + * 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 @@ -65,7 +68,9 @@ #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. */ + * 11 bits are the parameter, if applicable. + */ + enum c509cmd { TotalReset = 0<<11, SelectWindow = 1<<11, @@ -190,138 +195,142 @@ static const struct net_device_ops el3_netdev_ops = { static int tc589_probe(struct pcmcia_device *link) { - struct el3_private *lp; - struct net_device *dev; + struct el3_private *lp; + struct net_device *dev; - dev_dbg(&link->dev, "3c589_attach()\n"); + 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; + /* 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; + 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; + link->config_flags |= CONF_ENABLE_IRQ; + link->config_index = 1; - dev->netdev_ops = &el3_netdev_ops; - dev->watchdog_timeo = TX_TIMEOUT; + dev->netdev_ops = &el3_netdev_ops; + dev->watchdog_timeo = TX_TIMEOUT; - SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); + SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); - return tc589_config(link); + return tc589_config(link); } static void tc589_detach(struct pcmcia_device *link) { - struct net_device *dev = link->priv; + struct net_device *dev = link->priv; - dev_dbg(&link->dev, "3c589_detach\n"); + dev_dbg(&link->dev, "3c589_detach\n"); - unregister_netdev(dev); + unregister_netdev(dev); - tc589_release(link); + tc589_release(link); - free_netdev(dev); + free_netdev(dev); } /* tc589_detach */ static int tc589_config(struct pcmcia_device *link) { - struct net_device *dev = link->priv; - __be16 *phys_addr; - int ret, i, j, multi = 0, fifo; - 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"); - - phys_addr = (__be16 *)dev->dev_addr; - /* 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++) - phys_addr[i] = htons(le16_to_cpu(buf[i*2])); - kfree(buf); - } else { - kfree(buf); /* 0 < len < 6 */ - for (i = 0; i < 3; i++) - phys_addr[i] = htons(read_eeprom(ioaddr, i)); - if (phys_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; + struct net_device *dev = link->priv; + __be16 *phys_addr; + int ret, i, j, multi = 0, fifo; + 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"); + + phys_addr = (__be16 *)dev->dev_addr; + /* 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; } - } - - /* 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; + 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++) + phys_addr[i] = htons(le16_to_cpu(buf[i*2])); + kfree(buf); + } else { + kfree(buf); /* 0 < len < 6 */ + for (i = 0; i < 3; i++) + phys_addr[i] = htons(read_eeprom(ioaddr, i)); + if (phys_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; + } + } + + /* 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_release(link); + return -ENODEV; } /* tc589_config */ static void tc589_release(struct pcmcia_device *link) @@ -353,113 +362,120 @@ static int tc589_resume(struct pcmcia_device *link) /*====================================================================*/ -/* - Use this for commands that may take time to finish -*/ +/* 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); + 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. -*/ +/* 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); + 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. -*/ +/* 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); + 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); + 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, + 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 + outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull | AdapterFailure, ioaddr + EL3_CMD); } @@ -478,381 +494,406 @@ static const struct ethtool_ops netdev_ethtool_ops = { 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) { - 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; + if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) { + if (map->port <= 3) { + 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; + struct el3_private *lp = netdev_priv(dev); + struct pcmcia_device *link = lp->p_dev; - if (!pcmcia_dev_present(link)) - return -ENODEV; + if (!pcmcia_dev_present(link)) + return -ENODEV; - link->open++; - netif_start_queue(dev); + link->open++; + netif_start_queue(dev); - tc589_reset(dev); - init_timer(&lp->media); - lp->media.function = media_check; - lp->media.data = (unsigned long) dev; - lp->media.expires = jiffies + HZ; - add_timer(&lp->media); + tc589_reset(dev); + init_timer(&lp->media); + lp->media.function = media_check; + lp->media.data = (unsigned long) dev; + lp->media.expires = jiffies + HZ; + add_timer(&lp->media); - dev_dbg(&link->dev, "%s: opened, status %4.4x.\n", + dev_dbg(&link->dev, "%s: opened, status %4.4x.\n", dev->name, inw(dev->base_addr + EL3_STATUS)); - return 0; + return 0; } static void el3_tx_timeout(struct net_device *dev) { - unsigned int ioaddr = dev->base_addr; - - netdev_warn(dev, "Transmit timed out!\n"); - dump_status(dev); - dev->stats.tx_errors++; - dev->trans_start = jiffies; /* 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); + unsigned int ioaddr = dev->base_addr; + + netdev_warn(dev, "Transmit timed out!\n"); + dump_status(dev); + dev->stats.tx_errors++; + dev->trans_start = jiffies; /* 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++; + 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. */ } - 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; + 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", + 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); + spin_lock_irqsave(&priv->lock, flags); - dev->stats.tx_bytes += skb->len; + 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); + /* 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); - } + 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); + pop_tx_status(dev); + spin_unlock_irqrestore(&priv->lock, flags); + dev_kfree_skb(skb); - return NETDEV_TX_OK; + 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; + 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; + if (!netif_device_present(dev)) + return IRQ_NONE; - ioaddr = dev->base_addr; + ioaddr = dev->base_addr; - netdev_dbg(dev, "interrupt, status %4.4x.\n", inw(ioaddr + EL3_STATUS)); + netdev_dbg(dev, "interrupt, status %4.4x.\n", inw(ioaddr + EL3_STATUS)); - spin_lock(&lp->lock); - while ((status = 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", + 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 & 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 (fifo_diag & 0x2000) { - /* Rx underrun */ - tc589_wait_for_completion(dev, RxReset); - set_rx_mode(dev); - outw(RxEnable, 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; } - outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); - } + /* Acknowledge the IRQ. */ + outw(AckIntr | IntReq | IntLatch, 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); + 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(unsigned long arg) { - struct net_device *dev = (struct net_device *)(arg); - struct el3_private *lp = netdev_priv(dev); - unsigned int ioaddr = dev->base_addr; - u16 media, errs; - unsigned long flags; + struct net_device *dev = (struct net_device *)(arg); + struct el3_private *lp = netdev_priv(dev); + unsigned int ioaddr = dev->base_addr; + u16 media, errs; + unsigned long flags; - if (!netif_device_present(dev)) goto reschedule; + 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) && + /* 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 (!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)) + 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 & 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 + (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"); - } + } else if (media & 0x4000) { + if (media & 0x0010) + tc589_set_xcvr(dev, 1); + else + netdev_info(dev, "flipped to 10base2\n"); + } + } + lp->media_status = media; } - lp->media_status = media; - } - EL3WINDOW(1); - spin_unlock_irqrestore(&lp->lock, flags); + EL3WINDOW(1); + spin_unlock_irqrestore(&lp->lock, flags); reschedule: - lp->media.expires = jiffies + HZ; - add_timer(&lp->media); + 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; + 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; + 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 +/* 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); + 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; + 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", + 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) && + 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", + 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), + 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", + 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++; - } + dev->stats.rx_dropped++; + } + } + /* Pop the top of the Rx FIFO */ + tc589_wait_for_completion(dev, RxDiscard); } - /* 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; + 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); + 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) @@ -867,44 +908,44 @@ static void set_multicast_list(struct net_device *dev) 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); + 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); + } - if (pcmcia_dev_present(link)) { - /* Turn off statistics ASAP. We update dev->stats below. */ - outw(StatsDisable, ioaddr + EL3_CMD); + /* Switching back to window 0 disables the IRQ. */ + EL3WINDOW(0); + /* But we explicitly zero the IRQ line select anyway. */ + outw(0x0f00, ioaddr + WN0_IRQ); - /* 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); + /* Check if the card still exists */ + if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000) + update_stats(dev); } - /* 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); - del_timer_sync(&lp->media); + link->open--; + netif_stop_queue(dev); + del_timer_sync(&lp->media); - return 0; + return 0; } static const struct pcmcia_device_id tc589_ids[] = { |