| /*====================================================================== |
| |
| 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 DRV_NAME "3c589_cs" |
| #define DRV_VERSION "1.162-ac" |
| |
| #include <linux/module.h> |
| #include <linux/init.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 <pcmcia/cs_types.h> |
| #include <pcmcia/cs.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> |
| #include <asm/system.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; |
| dev_node_t node; |
| /* 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(unsigned long arg); |
| 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); |
| 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); |
| |
| /*====================================================================== |
| |
| tc589_attach() creates an "instance" of the driver, allocating |
| local data structures for one device. The device is registered |
| with Card Services. |
| |
| ======================================================================*/ |
| |
| 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_multicast_list = set_multicast_list, |
| .ndo_change_mtu = eth_change_mtu, |
| .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; |
| |
| 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->io.NumPorts1 = 16; |
| link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; |
| link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_HANDLE_PRESENT; |
| link->irq.IRQInfo1 = IRQ_LEVEL_ID; |
| link->irq.Handler = &el3_interrupt; |
| link->irq.Instance = dev; |
| link->conf.Attributes = CONF_ENABLE_IRQ; |
| link->conf.IntType = INT_MEMORY_AND_IO; |
| link->conf.ConfigIndex = 1; |
| |
| dev->netdev_ops = &el3_netdev_ops; |
| dev->watchdog_timeo = TX_TIMEOUT; |
| |
| SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); |
| |
| return tc589_config(link); |
| } /* tc589_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 tc589_detach(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| |
| dev_dbg(&link->dev, "3c589_detach\n"); |
| |
| if (link->dev_node) |
| unregister_netdev(dev); |
| |
| tc589_release(link); |
| |
| free_netdev(dev); |
| } /* tc589_detach */ |
| |
| /*====================================================================== |
| |
| tc589_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. |
| |
| ======================================================================*/ |
| |
| static int tc589_config(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| struct el3_private *lp = netdev_priv(dev); |
| __be16 *phys_addr; |
| int ret, i, j, multi = 0, fifo; |
| unsigned int ioaddr; |
| char *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) |
| printk(KERN_INFO "3c589_cs: hmmm, is this really a " |
| "3Com card??\n"); |
| multi = (link->card_id == PRODID_3COM_3C562); |
| |
| /* For the 3c562, the base address must be xx00-xx7f */ |
| link->io.IOAddrLines = 16; |
| for (i = j = 0; j < 0x400; j += 0x10) { |
| if (multi && (j & 0x80)) continue; |
| link->io.BasePort1 = j ^ 0x300; |
| i = pcmcia_request_io(link, &link->io); |
| if (i == 0) |
| break; |
| } |
| if (i != 0) |
| goto failed; |
| |
| ret = pcmcia_request_irq(link, &link->irq); |
| if (ret) |
| goto failed; |
| |
| ret = pcmcia_request_configuration(link, &link->conf); |
| if (ret) |
| goto failed; |
| |
| dev->irq = link->irq.AssignedIRQ; |
| dev->base_addr = link->io.BasePort1; |
| 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)) { |
| printk(KERN_ERR "3c589_cs: 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 |
| printk(KERN_ERR "3c589_cs: invalid if_port requested\n"); |
| |
| link->dev_node = &lp->node; |
| SET_NETDEV_DEV(dev, &link->dev); |
| |
| if (register_netdev(dev) != 0) { |
| printk(KERN_ERR "3c589_cs: register_netdev() failed\n"); |
| link->dev_node = NULL; |
| goto failed; |
| } |
| |
| strcpy(lp->node.dev_name, dev->name); |
| |
| printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, " |
| "hw_addr %pM\n", |
| dev->name, (multi ? "562" : "589"), dev->base_addr, dev->irq, |
| dev->dev_addr); |
| printk(KERN_INFO " %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 */ |
| |
| /*====================================================================== |
| |
| After a card is removed, tc589_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 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) |
| printk(KERN_WARNING "%s: command 0x%04x did not complete!\n", |
| dev->name, 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); |
| printk(KERN_INFO " 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); |
| printk(KERN_INFO " 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) |
| { |
| strcpy(info->driver, DRV_NAME); |
| strcpy(info->version, DRV_VERSION); |
| sprintf(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) { |
| dev->if_port = map->port; |
| printk(KERN_INFO "%s: switched to %s port\n", |
| dev->name, 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); |
| 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->name, inw(dev->base_addr + EL3_STATUS)); |
| |
| return 0; |
| } |
| |
| static void el3_tx_timeout(struct net_device *dev) |
| { |
| unsigned int ioaddr = dev->base_addr; |
| |
| printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name); |
| dump_status(dev); |
| dev->stats.tx_errors++; |
| dev->trans_start = jiffies; |
| /* 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) { |
| pr_debug("%s: transmit error: status 0x%02x\n", |
| dev->name, 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; |
| |
| pr_debug("%s: el3_start_xmit(length = %ld) called, " |
| "status %4.4x.\n", dev->name, (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); |
| |
| dev->trans_start = jiffies; |
| 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; |
| |
| pr_debug("%s: interrupt, status %4.4x.\n", |
| dev->name, inw(ioaddr + EL3_STATUS)); |
| |
| spin_lock(&lp->lock); |
| while ((status = inw(ioaddr + EL3_STATUS)) & |
| (IntLatch | RxComplete | StatsFull)) { |
| if ((status & 0xe000) != 0x2000) { |
| pr_debug("%s: interrupt from dead card\n", dev->name); |
| handled = 0; |
| break; |
| } |
| |
| if (status & RxComplete) |
| el3_rx(dev); |
| |
| if (status & TxAvailable) { |
| pr_debug(" 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); |
| printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic" |
| " register %04x.\n", dev->name, 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) { |
| printk(KERN_ERR "%s: infinite loop in interrupt, " |
| "status %4.4x.\n", dev->name, status); |
| /* Clear all interrupts */ |
| outw(AckIntr | 0xFF, ioaddr + EL3_CMD); |
| break; |
| } |
| /* Acknowledge the IRQ. */ |
| outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); |
| } |
| |
| lp->last_irq = jiffies; |
| spin_unlock(&lp->lock); |
| pr_debug("%s: exiting interrupt, status %4.4x.\n", |
| dev->name, 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; |
| |
| 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) |
| printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name); |
| el3_interrupt(dev->irq, dev); |
| 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)) |
| printk(KERN_INFO "%s: %s link beat\n", dev->name, |
| (lp->media_status & 0x0800 ? "lost" : "found")); |
| else if ((media & lp->media_status & 0x4000) && |
| ((lp->media_status ^ media) & 0x0010)) |
| printk(KERN_INFO "%s: coax cable %s\n", dev->name, |
| (lp->media_status & 0x0010 ? "ok" : "problem")); |
| if (dev->if_port == 0) { |
| if (media & 0x8000) { |
| if (media & 0x0800) |
| printk(KERN_INFO "%s: flipped to 10baseT\n", |
| dev->name); |
| else |
| tc589_set_xcvr(dev, 2); |
| } else if (media & 0x4000) { |
| if (media & 0x0010) |
| tc589_set_xcvr(dev, 1); |
| else |
| printk(KERN_INFO "%s: flipped to 10base2\n", |
| dev->name); |
| } |
| } |
| 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; |
| |
| pr_debug("%s: updating the statistics.\n", dev->name); |
| /* 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; |
| |
| pr_debug("%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n", |
| dev->name, 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 = dev_alloc_skb(pkt_len+5); |
| |
| pr_debug(" 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 { |
| pr_debug("%s: couldn't allocate a sk_buff of" |
| " size %d.\n", dev->name, pkt_len); |
| dev->stats.rx_dropped++; |
| } |
| } |
| /* Pop the top of the Rx FIFO */ |
| tc589_wait_for_completion(dev, RxDiscard); |
| } |
| if (worklimit == 0) |
| printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name); |
| 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 (dev->mc_count || (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); |
| del_timer_sync(&lp->media); |
| |
| return 0; |
| } |
| |
| static 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, |
| .drv = { |
| .name = "3c589_cs", |
| }, |
| .probe = tc589_probe, |
| .remove = tc589_detach, |
| .id_table = tc589_ids, |
| .suspend = tc589_suspend, |
| .resume = tc589_resume, |
| }; |
| |
| static int __init init_tc589(void) |
| { |
| return pcmcia_register_driver(&tc589_driver); |
| } |
| |
| static void __exit exit_tc589(void) |
| { |
| pcmcia_unregister_driver(&tc589_driver); |
| } |
| |
| module_init(init_tc589); |
| module_exit(exit_tc589); |