3c589_cs.c
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上传日期:2013-04-10
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- /*======================================================================
- 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
- ======================================================================*/
- #define DRV_NAME "3c589_cs"
- #define DRV_VERSION "1.162"
- #include <linux/module.h>
- #include <linux/init.h>
- #include <linux/kernel.h>
- #include <linux/sched.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 <asm/uaccess.h>
- #include <asm/io.h>
- #include <asm/system.h>
- #include <asm/bitops.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/skbuff.h>
- #include <linux/if_arp.h>
- #include <linux/ioport.h>
- #include <pcmcia/version.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>
- /* 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 {
- dev_link_t link;
- struct net_device dev;
- dev_node_t node;
- struct net_device_stats stats;
- /* For transceiver monitoring */
- struct timer_list media;
- u_short media_status;
- u_short fast_poll;
- u_long last_irq;
- };
- static 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_PARM(n, "i")
- /* Special hook for setting if_port when module is loaded */
- INT_MODULE_PARM(if_port, 0);
- /* Bit map of interrupts to choose from */
- INT_MODULE_PARM(irq_mask, 0xdeb8);
- static int irq_list[4] = { -1 };
- MODULE_PARM(irq_list, "1-4i");
- #ifdef PCMCIA_DEBUG
- INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
- #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
- static char *version =
- DRV_NAME ".c " DRV_VERSION " 2001/10/13 00:08:50 (David Hinds)";
- #else
- #define DEBUG(n, args...)
- #endif
- /*====================================================================*/
- static void tc589_config(dev_link_t *link);
- static void tc589_release(u_long arg);
- static int tc589_event(event_t event, int priority,
- event_callback_args_t *args);
- static u_short read_eeprom(ioaddr_t ioaddr, int index);
- static void tc589_reset(struct net_device *dev);
- static void media_check(u_long arg);
- static int el3_config(struct net_device *dev, struct ifmap *map);
- static int el3_open(struct net_device *dev);
- static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
- static void el3_interrupt(int irq, void *dev_id, struct pt_regs *regs);
- 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_multicast_list(struct net_device *dev);
- static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
- static dev_info_t dev_info = "3c589_cs";
- static dev_link_t *tc589_attach(void);
- static void tc589_detach(dev_link_t *);
- static dev_link_t *dev_list;
- /*======================================================================
- This bit of code is used to avoid unregistering network devices
- at inappropriate times. 2.2 and later kernels are fairly picky
- about when this can happen.
-
- ======================================================================*/
- static void flush_stale_links(void)
- {
- dev_link_t *link, *next;
- for (link = dev_list; link; link = next) {
- next = link->next;
- if (link->state & DEV_STALE_LINK)
- tc589_detach(link);
- }
- }
- /*====================================================================*/
- static void cs_error(client_handle_t handle, int func, int ret)
- {
- error_info_t err = { func, ret };
- CardServices(ReportError, handle, &err);
- }
- /*======================================================================
- tc589_attach() creates an "instance" of the driver, allocating
- local data structures for one device. The device is registered
- with Card Services.
- ======================================================================*/
- static dev_link_t *tc589_attach(void)
- {
- struct el3_private *lp;
- client_reg_t client_reg;
- dev_link_t *link;
- struct net_device *dev;
- int i, ret;
- DEBUG(0, "3c589_attach()n");
- flush_stale_links();
-
- /* Create new ethernet device */
- lp = kmalloc(sizeof(*lp), GFP_KERNEL);
- if (!lp) return NULL;
- memset(lp, 0, sizeof(*lp));
- link = &lp->link; dev = &lp->dev;
- link->priv = dev->priv = link->irq.Instance = lp;
-
- link->release.function = &tc589_release;
- link->release.data = (u_long)link;
- link->io.NumPorts1 = 16;
- link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
- link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
- link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
- if (irq_list[0] == -1)
- link->irq.IRQInfo2 = irq_mask;
- else
- for (i = 0; i < 4; i++)
- link->irq.IRQInfo2 |= 1 << irq_list[i];
- link->irq.Handler = &el3_interrupt;
- link->conf.Attributes = CONF_ENABLE_IRQ;
- link->conf.Vcc = 50;
- link->conf.IntType = INT_MEMORY_AND_IO;
- link->conf.ConfigIndex = 1;
- link->conf.Present = PRESENT_OPTION;
-
- /* The EL3-specific entries in the device structure. */
- dev->hard_start_xmit = &el3_start_xmit;
- dev->set_config = &el3_config;
- dev->get_stats = &el3_get_stats;
- dev->set_multicast_list = &set_multicast_list;
- ether_setup(dev);
- dev->open = &el3_open;
- dev->stop = &el3_close;
- #ifdef HAVE_TX_TIMEOUT
- dev->tx_timeout = el3_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
- #endif
- dev->do_ioctl = netdev_ioctl;
- /* Register with Card Services */
- link->next = dev_list;
- dev_list = link;
- client_reg.dev_info = &dev_info;
- client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
- client_reg.EventMask =
- CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
- CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
- CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
- client_reg.event_handler = &tc589_event;
- client_reg.Version = 0x0210;
- client_reg.event_callback_args.client_data = link;
- ret = CardServices(RegisterClient, &link->handle, &client_reg);
- if (ret != 0) {
- cs_error(link->handle, RegisterClient, ret);
- tc589_detach(link);
- return NULL;
- }
-
- return 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(dev_link_t *link)
- {
- struct el3_private *lp = link->priv;
- dev_link_t **linkp;
-
- DEBUG(0, "3c589_detach(0x%p)n", link);
-
- /* Locate device structure */
- for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
- if (*linkp == link) break;
- if (*linkp == NULL)
- return;
- del_timer(&link->release);
- if (link->state & DEV_CONFIG) {
- tc589_release((u_long)link);
- if (link->state & DEV_STALE_CONFIG) {
- link->state |= DEV_STALE_LINK;
- return;
- }
- }
-
- if (link->handle)
- CardServices(DeregisterClient, link->handle);
-
- /* Unlink device structure, free bits */
- *linkp = link->next;
- if (link->dev)
- unregister_netdev(&lp->dev);
- kfree(lp);
-
- } /* 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.
-
- ======================================================================*/
- #define CS_CHECK(fn, args...)
- while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
- static void tc589_config(dev_link_t *link)
- {
- client_handle_t handle = link->handle;
- struct el3_private *lp = link->priv;
- struct net_device *dev = &lp->dev;
- tuple_t tuple;
- cisparse_t parse;
- u_short buf[32], *phys_addr;
- int last_fn, last_ret, i, j, multi = 0;
- ioaddr_t ioaddr;
- char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
-
- DEBUG(0, "3c589_config(0x%p)n", link);
- phys_addr = (u_short *)dev->dev_addr;
- tuple.Attributes = 0;
- tuple.DesiredTuple = CISTPL_CONFIG;
- CS_CHECK(GetFirstTuple, handle, &tuple);
- tuple.TupleData = (cisdata_t *)buf;
- tuple.TupleDataMax = sizeof(buf);
- tuple.TupleOffset = 0;
- CS_CHECK(GetTupleData, handle, &tuple);
- CS_CHECK(ParseTuple, handle, &tuple, &parse);
- link->conf.ConfigBase = parse.config.base;
- link->conf.Present = parse.config.rmask[0];
-
- /* Is this a 3c562? */
- tuple.DesiredTuple = CISTPL_MANFID;
- tuple.Attributes = TUPLE_RETURN_COMMON;
- if ((CardServices(GetFirstTuple, handle, &tuple) == CS_SUCCESS) &&
- (CardServices(GetTupleData, handle, &tuple) == CS_SUCCESS)) {
- if (le16_to_cpu(buf[0]) != MANFID_3COM)
- printk(KERN_INFO "3c589_cs: hmmm, is this really a "
- "3Com card??n");
- multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
- }
-
- /* Configure card */
- link->state |= DEV_CONFIG;
- /* 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 = CardServices(RequestIO, link->handle, &link->io);
- if (i == CS_SUCCESS) break;
- }
- if (i != CS_SUCCESS) {
- cs_error(link->handle, RequestIO, i);
- goto failed;
- }
- CS_CHECK(RequestIRQ, link->handle, &link->irq);
- CS_CHECK(RequestConfiguration, link->handle, &link->conf);
-
- dev->irq = link->irq.AssignedIRQ;
- dev->base_addr = link->io.BasePort1;
- if (register_netdev(dev) != 0) {
- printk(KERN_NOTICE "3c589_cs: register_netdev() failedn");
- goto failed;
- }
-
- 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. */
- tuple.DesiredTuple = 0x88;
- if (CardServices(GetFirstTuple, handle, &tuple) == CS_SUCCESS) {
- CardServices(GetTupleData, handle, &tuple);
- for (i = 0; i < 3; i++)
- phys_addr[i] = htons(buf[i]);
- } else {
- for (i = 0; i < 3; i++)
- phys_addr[i] = htons(read_eeprom(ioaddr, i));
- if (phys_addr[0] == 0x6060) {
- printk(KERN_NOTICE "3c589_cs: IO port conflict at 0x%03lx"
- "-0x%03lxn", dev->base_addr, dev->base_addr+15);
- goto failed;
- }
- }
- strcpy(lp->node.dev_name, dev->name);
- link->dev = &lp->node;
- link->state &= ~DEV_CONFIG_PENDING;
-
- /* 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);
- /* 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_NOTICE "3c589_cs: invalid if_port requestedn");
-
- printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
- dev->name, (multi ? "562" : "589"), dev->base_addr,
- dev->irq);
- for (i = 0; i < 6; i++)
- printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "n"));
- i = inl(ioaddr);
- printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvrn",
- (i & 7) ? 32 : 8, ram_split[(i >> 16) & 3],
- if_names[dev->if_port]);
- return;
- cs_failed:
- cs_error(link->handle, last_fn, last_ret);
- failed:
- tc589_release((u_long)link);
- return;
-
- } /* 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(u_long arg)
- {
- dev_link_t *link = (dev_link_t *)arg;
- DEBUG(0, "3c589_release(0x%p)n", link);
-
- if (link->open) {
- DEBUG(1, "3c589_cs: release postponed, '%s' still openn",
- link->dev->dev_name);
- link->state |= DEV_STALE_CONFIG;
- return;
- }
-
- CardServices(ReleaseConfiguration, link->handle);
- CardServices(ReleaseIO, link->handle, &link->io);
- CardServices(ReleaseIRQ, link->handle, &link->irq);
-
- link->state &= ~DEV_CONFIG;
-
- } /* tc589_release */
- /*======================================================================
- The card status event handler. Mostly, this schedules other
- stuff to run after an event is received. A CARD_REMOVAL event
- also sets some flags to discourage the net drivers from trying
- to talk to the card any more.
-
- ======================================================================*/
- static int tc589_event(event_t event, int priority,
- event_callback_args_t *args)
- {
- dev_link_t *link = args->client_data;
- struct el3_private *lp = link->priv;
- struct net_device *dev = &lp->dev;
-
- DEBUG(1, "3c589_event(0x%06x)n", event);
-
- switch (event) {
- case CS_EVENT_CARD_REMOVAL:
- link->state &= ~DEV_PRESENT;
- if (link->state & DEV_CONFIG) {
- netif_device_detach(dev);
- mod_timer(&link->release, jiffies + HZ/20);
- }
- break;
- case CS_EVENT_CARD_INSERTION:
- link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
- tc589_config(link);
- break;
- case CS_EVENT_PM_SUSPEND:
- link->state |= DEV_SUSPEND;
- /* Fall through... */
- case CS_EVENT_RESET_PHYSICAL:
- if (link->state & DEV_CONFIG) {
- if (link->open)
- netif_device_detach(dev);
- CardServices(ReleaseConfiguration, link->handle);
- }
- break;
- case CS_EVENT_PM_RESUME:
- link->state &= ~DEV_SUSPEND;
- /* Fall through... */
- case CS_EVENT_CARD_RESET:
- if (link->state & DEV_CONFIG) {
- CardServices(RequestConfiguration, link->handle, &link->conf);
- if (link->open) {
- tc589_reset(dev);
- netif_device_attach(dev);
- }
- }
- break;
- }
- return 0;
- } /* tc589_event */
- /*====================================================================*/
- /*
- 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_NOTICE "%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 u_short read_eeprom(ioaddr_t 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 = (struct el3_private *)dev->priv;
- ioaddr_t 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)
- {
- ioaddr_t ioaddr = dev->base_addr;
- EL3WINDOW(1);
- printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
- "%02x tx free %04xn", 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 %04xn", 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)
- {
- ioaddr_t 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);
- /* Accept b-cast and phys addr only. */
- outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
- 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 int netdev_ethtool_ioctl (struct net_device *dev, void *useraddr)
- {
- u32 ethcmd;
- /* dev_ioctl() in ../../net/core/dev.c has already checked
- capable(CAP_NET_ADMIN), so don't bother with that here. */
- if (get_user(ethcmd, (u32 *)useraddr))
- return -EFAULT;
- switch (ethcmd) {
- case ETHTOOL_GDRVINFO: {
- struct ethtool_drvinfo info = { ETHTOOL_GDRVINFO };
- strcpy (info.driver, DRV_NAME);
- strcpy (info.version, DRV_VERSION);
- sprintf(info.bus_info, "PCMCIA 0x%lx", dev->base_addr);
- if (copy_to_user (useraddr, &info, sizeof (info)))
- return -EFAULT;
- return 0;
- }
- #ifdef PCMCIA_DEBUG
- /* get message-level */
- case ETHTOOL_GMSGLVL: {
- struct ethtool_value edata = {ETHTOOL_GMSGLVL};
- edata.data = pc_debug;
- if (copy_to_user(useraddr, &edata, sizeof(edata)))
- return -EFAULT;
- return 0;
- }
- /* set message-level */
- case ETHTOOL_SMSGLVL: {
- struct ethtool_value edata;
- if (copy_from_user(&edata, useraddr, sizeof(edata)))
- return -EFAULT;
- pc_debug = edata.data;
- return 0;
- }
- #endif
- default:
- break;
- }
- return -EOPNOTSUPP;
- }
- static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
- {
- int rc;
- switch (cmd) {
- case SIOCETHTOOL:
- rc = netdev_ethtool_ioctl(dev, (void *) rq->ifr_data);
- break;
- default:
- rc = -EOPNOTSUPP;
- break;
- }
- return rc;
- }
- 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 portn",
- 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 = (struct el3_private *)dev->priv;
- dev_link_t *link = &lp->link;
-
- if (!DEV_OK(link))
- return -ENODEV;
- link->open++;
- MOD_INC_USE_COUNT;
- netif_start_queue(dev);
-
- tc589_reset(dev);
- lp->media.function = &media_check;
- lp->media.data = (u_long)lp;
- lp->media.expires = jiffies + HZ;
- add_timer(&lp->media);
- DEBUG(1, "%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)
- {
- struct el3_private *lp = (struct el3_private *)dev->priv;
- ioaddr_t ioaddr = dev->base_addr;
-
- printk(KERN_NOTICE "%s: Transmit timed out!n", dev->name);
- dump_status(dev);
- lp->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)
- {
- struct el3_private *lp = (struct el3_private *)dev->priv;
- ioaddr_t 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) {
- DEBUG(1, "%s: transmit error: status 0x%02xn",
- dev->name, tx_status);
- outw(TxEnable, ioaddr + EL3_CMD);
- lp->stats.tx_aborted_errors++;
- }
- outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
- }
- }
- static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
- {
- ioaddr_t ioaddr = dev->base_addr;
- DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
- "status %4.4x.n", dev->name, (long)skb->len,
- inw(ioaddr + EL3_STATUS));
- ((struct el3_private *)dev->priv)->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);
- }
- dev_kfree_skb(skb);
- pop_tx_status(dev);
-
- return 0;
- }
- /* The EL3 interrupt handler. */
- static void el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct el3_private *lp = dev_id;
- struct net_device *dev = &lp->dev;
- ioaddr_t ioaddr, status;
- int i = 0;
-
- if (!netif_device_present(dev))
- return;
- ioaddr = dev->base_addr;
- DEBUG(3, "%s: interrupt, status %4.4x.n",
- dev->name, inw(ioaddr + EL3_STATUS));
-
- while ((status = inw(ioaddr + EL3_STATUS)) &
- (IntLatch | RxComplete | StatsFull)) {
- if (!netif_device_present(dev) ||
- ((status & 0xe000) != 0x2000)) {
- DEBUG(1, "%s: interrupt from dead cardn", dev->name);
- break;
- }
-
- if (status & RxComplete)
- el3_rx(dev);
-
- if (status & TxAvailable) {
- DEBUG(3, " 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_NOTICE "%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_multicast_list(dev);
- outw(RxEnable, ioaddr + EL3_CMD);
- }
- outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
- }
- }
-
- if (++i > 10) {
- printk(KERN_NOTICE "%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;
- DEBUG(3, "%s: exiting interrupt, status %4.4x.n",
- dev->name, inw(ioaddr + EL3_STATUS));
- return;
- }
- static void media_check(u_long arg)
- {
- struct el3_private *lp = (struct el3_private *)(arg);
- struct net_device *dev = &lp->dev;
- ioaddr_t ioaddr = dev->base_addr;
- u_short media, errs;
- u_long flags;
- if (!netif_device_present(dev)) goto reschedule;
- EL3WINDOW(1);
- /* 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_INFO "%s: interrupt(s) dropped!n", dev->name);
- el3_interrupt(dev->irq, lp, NULL);
- lp->fast_poll = HZ;
- }
- if (lp->fast_poll) {
- lp->fast_poll--;
- lp->media.expires = jiffies + 1;
- add_timer(&lp->media);
- return;
- }
-
- save_flags(flags);
- cli();
- EL3WINDOW(4);
- media = inw(ioaddr+WN4_MEDIA) & 0xc810;
- /* Ignore collisions unless we've had no irq's recently */
- if (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);
- lp->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 beatn", 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 %sn", 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 10baseTn",
- 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 10base2n",
- dev->name);
- }
- }
- lp->media_status = media;
- }
-
- EL3WINDOW(1);
- restore_flags(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 = (struct el3_private *)dev->priv;
- unsigned long flags;
- dev_link_t *link = &lp->link;
- if (DEV_OK(link)) {
- save_flags(flags);
- cli();
- update_stats(dev);
- restore_flags(flags);
- }
- return &lp->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.
- */
- static void update_stats(struct net_device *dev)
- {
- struct el3_private *lp = (struct el3_private *)dev->priv;
- ioaddr_t ioaddr = dev->base_addr;
- DEBUG(2, "%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);
- lp->stats.tx_carrier_errors += inb(ioaddr + 0);
- lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
- /* Multiple collisions. */ inb(ioaddr + 2);
- lp->stats.collisions += inb(ioaddr + 3);
- lp->stats.tx_window_errors += inb(ioaddr + 4);
- lp->stats.rx_fifo_errors += inb(ioaddr + 5);
- lp->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)
- {
- struct el3_private *lp = (struct el3_private *)dev->priv;
- ioaddr_t ioaddr = dev->base_addr;
- int worklimit = 32;
- short rx_status;
-
- DEBUG(3, "%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)) {
- if (rx_status & 0x4000) { /* Error, update stats. */
- short error = rx_status & 0x3800;
- lp->stats.rx_errors++;
- switch (error) {
- case 0x0000: lp->stats.rx_over_errors++; break;
- case 0x0800: lp->stats.rx_length_errors++; break;
- case 0x1000: lp->stats.rx_frame_errors++; break;
- case 0x1800: lp->stats.rx_length_errors++; break;
- case 0x2000: lp->stats.rx_frame_errors++; break;
- case 0x2800: lp->stats.rx_crc_errors++; break;
- }
- } else {
- short pkt_len = rx_status & 0x7ff;
- struct sk_buff *skb;
-
- skb = dev_alloc_skb(pkt_len+5);
-
- DEBUG(3, " Receiving packet size %d status %4.4x.n",
- pkt_len, rx_status);
- if (skb != NULL) {
- skb->dev = dev;
- 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->last_rx = jiffies;
- lp->stats.rx_packets++;
- lp->stats.rx_bytes += pkt_len;
- } else {
- DEBUG(1, "%s: couldn't allocate a sk_buff of"
- " size %d.n", dev->name, pkt_len);
- lp->stats.rx_dropped++;
- }
- }
- /* Pop the top of the Rx FIFO */
- tc589_wait_for_completion(dev, RxDiscard);
- }
- if (worklimit == 0)
- printk(KERN_NOTICE "%s: too much work in el3_rx!n", dev->name);
- return 0;
- }
- static void set_multicast_list(struct net_device *dev)
- {
- struct el3_private *lp = dev->priv;
- dev_link_t *link = &lp->link;
- ioaddr_t ioaddr = dev->base_addr;
- u_short opts = SetRxFilter | RxStation | RxBroadcast;
- if (!(DEV_OK(link))) return;
- 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 int el3_close(struct net_device *dev)
- {
- struct el3_private *lp = dev->priv;
- dev_link_t *link = &lp->link;
- ioaddr_t ioaddr = dev->base_addr;
-
- DEBUG(1, "%s: shutting down ethercard.n", dev->name);
- if (DEV_OK(link)) {
- /* Turn off statistics ASAP. We update lp->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(&lp->media);
- if (link->state & DEV_STALE_CONFIG)
- mod_timer(&link->release, jiffies + HZ/20);
-
- MOD_DEC_USE_COUNT;
-
- return 0;
- }
- /*====================================================================*/
- static int __init init_3c589_cs(void)
- {
- servinfo_t serv;
- DEBUG(0, "%sn", version);
- CardServices(GetCardServicesInfo, &serv);
- if (serv.Revision != CS_RELEASE_CODE) {
- printk(KERN_NOTICE "3c589_cs: Card Services release "
- "does not match!n");
- return -1;
- }
- register_pccard_driver(&dev_info, &tc589_attach, &tc589_detach);
- return 0;
- }
- static void __exit exit_3c589_cs(void)
- {
- DEBUG(0, "3c589_cs: unloadingn");
- unregister_pccard_driver(&dev_info);
- while (dev_list != NULL)
- tc589_detach(dev_list);
- }
- module_init(init_3c589_cs);
- module_exit(exit_3c589_cs);