3c574_cs.c
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- /* 3c574.c: A PCMCIA ethernet driver for the 3com 3c574 "RoadRunner".
- Written 1993-1998 by
- Donald Becker, becker@scyld.com, (driver core) and
- David Hinds, dahinds@users.sourceforge.net (from his PC card code).
- This software may be used and distributed according to the terms of
- the GNU General Public License, incorporated herein by reference.
- This driver derives from Donald Becker's 3c509 core, which has the
- following copyright:
- Copyright 1993 United States Government as represented by the
- Director, National Security Agency.
- */
- /*
- Theory of Operation
- I. Board Compatibility
- This device driver is designed for the 3Com 3c574 PC card Fast Ethernet
- Adapter.
- II. Board-specific settings
- None -- PC cards are autoconfigured.
- III. Driver operation
- The 3c574 uses a Boomerang-style interface, without the bus-master capability.
- See the Boomerang driver and documentation for most details.
- IV. Notes and chip documentation.
- Two added registers are used to enhance PIO performance, RunnerRdCtrl and
- RunnerWrCtrl. These are 11 bit down-counters that are preloaded with the
- count of word (16 bits) reads or writes the driver is about to do to the Rx
- or Tx FIFO. The chip is then able to hide the internal-PCI-bus to PC-card
- translation latency by buffering the I/O operations with an 8 word FIFO.
- Note: No other chip accesses are permitted when this buffer is used.
- A second enhancement is that both attribute and common memory space
- 0x0800-0x0fff can translated to the PIO FIFO. Thus memory operations (faster
- with *some* PCcard bridges) may be used instead of I/O operations.
- This is enabled by setting the 0x10 bit in the PCMCIA LAN COR.
- Some slow PC card bridges work better if they never see a WAIT signal.
- This is configured by setting the 0x20 bit in the PCMCIA LAN COR.
- Only do this after testing that it is reliable and improves performance.
- The upper five bits of RunnerRdCtrl are used to window into PCcard
- configuration space registers. Window 0 is the regular Boomerang/Odie
- register set, 1-5 are various PC card control registers, and 16-31 are
- the (reversed!) CIS table.
- A final note: writing the InternalConfig register in window 3 with an
- invalid ramWidth is Very Bad.
- V. References
- http://www.scyld.com/expert/NWay.html
- http://www.national.com/pf/DP/DP83840.html
- Thanks to Terry Murphy of 3Com for providing development information for
- earlier 3Com products.
- */
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/init.h>
- #include <linux/sched.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 <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 <linux/ethtool.h>
- #include <asm/uaccess.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>
- #include <pcmcia/mem_op.h>
- /*====================================================================*/
- /* Module parameters */
- MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
- MODULE_DESCRIPTION("3Com 3c574 series PCMCIA ethernet driver");
- MODULE_LICENSE("GPL");
- #define INT_MODULE_PARM(n, v) static int n = v; MODULE_PARM(n, "i")
- /* Now-standard PC card module parameters. */
- INT_MODULE_PARM(irq_mask, 0xdeb8);
- static int irq_list[4] = { -1 };
- MODULE_PARM(irq_list, "1-4i");
- /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
- INT_MODULE_PARM(max_interrupt_work, 32);
- /* Force full duplex modes? */
- INT_MODULE_PARM(full_duplex, 0);
- /* Autodetect link polarity reversal? */
- INT_MODULE_PARM(auto_polarity, 1);
- #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 =
- "3c574_cs.c 1.65 2001/10/13 00:08:50 Donald Becker/David Hinds, becker@scyld.com.n";
- #else
- #define DEBUG(n, args...)
- #endif
- /*====================================================================*/
- /* Time in jiffies before concluding the transmitter is hung. */
- #define TX_TIMEOUT ((800*HZ)/1000)
- /* To minimize the size of the driver source and make the driver more
- readable not all constants are symbolically defined.
- You'll need the manual if you want to understand driver details anyway. */
- /* Offsets from base I/O address. */
- #define EL3_DATA 0x00
- #define EL3_CMD 0x0e
- #define EL3_STATUS 0x0e
- #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 el3_cmds {
- 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 elxl_status {
- 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
- };
- enum Window0 {
- Wn0EepromCmd = 10, Wn0EepromData = 12, /* EEPROM command/address, data. */
- IntrStatus=0x0E, /* Valid in all windows. */
- };
- /* These assumes the larger EEPROM. */
- enum Win0_EEPROM_cmds {
- EEPROM_Read = 0x200, EEPROM_WRITE = 0x100, EEPROM_ERASE = 0x300,
- EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */
- EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */
- };
- /* Register window 1 offsets, the window used in normal operation.
- On the "Odie" this window is always mapped at offsets 0x10-0x1f.
- Except for TxFree, which is overlapped by RunnerWrCtrl. */
- enum Window1 {
- TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14,
- RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B,
- TxFree = 0x0C, /* Remaining free bytes in Tx buffer. */
- RunnerRdCtrl = 0x16, RunnerWrCtrl = 0x1c,
- };
- enum Window3 { /* Window 3: MAC/config bits. */
- Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8,
- };
- union wn3_config {
- int i;
- struct w3_config_fields {
- unsigned int ram_size:3, ram_width:1, ram_speed:2, rom_size:2;
- int pad8:8;
- unsigned int ram_split:2, pad18:2, xcvr:3, pad21:1, autoselect:1;
- int pad24:7;
- } u;
- };
- enum Window4 { /* Window 4: Xcvr/media bits. */
- Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10,
- };
- #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
- struct el3_private {
- dev_link_t link;
- struct net_device dev;
- dev_node_t node;
- struct net_device_stats stats;
- u16 advertising, partner; /* NWay media advertisement */
- unsigned char phys; /* MII device address */
- unsigned int
- autoselect:1, default_media:3; /* Read from the EEPROM/Wn3_Config. */
- /* for transceiver monitoring */
- struct timer_list media;
- u_short media_status;
- u_short fast_poll;
- u_long last_irq;
- };
- /* Set iff a MII transceiver on any interface requires mdio preamble.
- This only set with the original DP83840 on older 3c905 boards, so the extra
- code size of a per-interface flag is not worthwhile. */
- static char mii_preamble_required = 0;
- /* Index of functions. */
- static void tc574_config(dev_link_t *link);
- static void tc574_release(u_long arg);
- static int tc574_event(event_t event, int priority,
- event_callback_args_t *args);
- static void mdio_sync(ioaddr_t ioaddr, int bits);
- static int mdio_read(ioaddr_t ioaddr, int phy_id, int location);
- static void mdio_write(ioaddr_t ioaddr, int phy_id, int location, int value);
- static u_short read_eeprom(ioaddr_t ioaddr, int index);
- static void tc574_wait_for_completion(struct net_device *dev, int cmd);
- static void tc574_reset(struct net_device *dev);
- static void media_check(u_long arg);
- 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, int worklimit);
- static int el3_close(struct net_device *dev);
- static void el3_tx_timeout(struct net_device *dev);
- static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
- static void set_rx_mode(struct net_device *dev);
- static dev_info_t dev_info = "3c574_cs";
- static dev_link_t *tc574_attach(void);
- static void tc574_detach(dev_link_t *);
- static dev_link_t *dev_list;
- 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)
- tc574_detach(link);
- }
- }
- static void cs_error(client_handle_t handle, int func, int ret)
- {
- #if CS_RELEASE_CODE < 0x2911
- CardServices(ReportError, dev_info, (void *)func, (void *)ret);
- #else
- error_info_t err = { func, ret };
- CardServices(ReportError, handle, &err);
- #endif
- }
- /*
- tc574_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 *tc574_attach(void)
- {
- struct el3_private *lp;
- client_reg_t client_reg;
- dev_link_t *link;
- struct net_device *dev;
- int i, ret;
- DEBUG(0, "3c574_attach()n");
- flush_stale_links();
- /* Create the PC card device object. */
- 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 = &tc574_release;
- link->release.data = (u_long)link;
- link->io.NumPorts1 = 32;
- 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->get_stats = &el3_get_stats;
- dev->do_ioctl = &el3_ioctl;
- dev->set_multicast_list = &set_rx_mode;
- 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
- /* 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 = &tc574_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);
- tc574_detach(link);
- return NULL;
- }
- return link;
- } /* tc574_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 tc574_detach(dev_link_t *link)
- {
- struct el3_private *lp = link->priv;
- dev_link_t **linkp;
- DEBUG(0, "3c574_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) {
- tc574_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);
- } /* tc574_detach */
- /*
- tc574_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 tc574_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];
- int last_fn, last_ret, i, j;
- ioaddr_t ioaddr;
- u16 *phys_addr;
- char *cardname;
- phys_addr = (u16 *)dev->dev_addr;
- DEBUG(0, "3c574_config(0x%p)n", link);
- tuple.Attributes = 0;
- tuple.DesiredTuple = CISTPL_CONFIG;
- CS_CHECK(GetFirstTuple, handle, &tuple);
- tuple.TupleData = (cisdata_t *)buf;
- tuple.TupleDataMax = 64;
- 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];
- /* Configure card */
- link->state |= DEV_CONFIG;
- link->io.IOAddrLines = 16;
- for (i = j = 0; j < 0x400; j += 0x20) {
- 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 "3c574_cs: register_netdev() failedn");
- goto failed;
- }
- ioaddr = dev->base_addr;
- strcpy(lp->node.dev_name, dev->name);
- link->dev = &lp->node;
- link->state &= ~DEV_CONFIG_PENDING;
- /* The 3c574 normally uses an EEPROM for configuration info, including
- the hardware address. The future products may include a modem chip
- and put 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 {
- EL3WINDOW(0);
- for (i = 0; i < 3; i++)
- phys_addr[i] = htons(read_eeprom(ioaddr, i + 10));
- if (phys_addr[0] == 0x6060) {
- printk(KERN_NOTICE "3c574_cs: IO port conflict at 0x%03lx"
- "-0x%03lxn", dev->base_addr, dev->base_addr+15);
- goto failed;
- }
- }
- tuple.DesiredTuple = CISTPL_VERS_1;
- if (CardServices(GetFirstTuple, handle, &tuple) == CS_SUCCESS &&
- CardServices(GetTupleData, handle, &tuple) == CS_SUCCESS &&
- CardServices(ParseTuple, handle, &tuple, &parse) == CS_SUCCESS) {
- cardname = parse.version_1.str + parse.version_1.ofs[1];
- } else
- cardname = "3Com 3c574";
- printk(KERN_INFO "%s: %s at io %#3lx, irq %d, hw_addr ",
- dev->name, cardname, dev->base_addr, dev->irq);
- for (i = 0; i < 6; i++)
- printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : ".n"));
- {
- u_char mcr, *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
- union wn3_config config;
- outw(2<<11, ioaddr + RunnerRdCtrl);
- mcr = inb(ioaddr + 2);
- outw(0<<11, ioaddr + RunnerRdCtrl);
- printk(KERN_INFO " ASIC rev %d,", mcr>>3);
- EL3WINDOW(3);
- config.i = inl(ioaddr + Wn3_Config);
- printk(" %dK FIFO split %s Rx:Tx, %sMII interface.n",
- 8 << config.u.ram_size, ram_split[config.u.ram_split],
- config.u.autoselect ? "autoselect " : "");
- lp->default_media = config.u.xcvr;
- lp->autoselect = config.u.autoselect;
- }
- {
- int phy;
-
- /* Roadrunner only: Turn on the MII transceiver */
- outw(0x8040, ioaddr + Wn3_Options);
- mdelay(1);
- outw(0xc040, ioaddr + Wn3_Options);
- tc574_wait_for_completion(dev, TxReset);
- tc574_wait_for_completion(dev, RxReset);
- mdelay(1);
- outw(0x8040, ioaddr + Wn3_Options);
-
- EL3WINDOW(4);
- for (phy = 1; phy <= 32; phy++) {
- int mii_status;
- mdio_sync(ioaddr, 32);
- mii_status = mdio_read(ioaddr, phy & 0x1f, 1);
- if (mii_status != 0xffff) {
- lp->phys = phy & 0x1f;
- DEBUG(0, " MII transceiver at index %d, status %x.n",
- phy, mii_status);
- if ((mii_status & 0x0040) == 0)
- mii_preamble_required = 1;
- break;
- }
- }
- if (phy > 32) {
- printk(KERN_NOTICE " No MII transceivers found!n");
- goto failed;
- }
- i = mdio_read(ioaddr, lp->phys, 16) | 0x40;
- mdio_write(ioaddr, lp->phys, 16, i);
- lp->advertising = mdio_read(ioaddr, lp->phys, 4);
- if (full_duplex) {
- /* Only advertise the FD media types. */
- lp->advertising &= ~0x02a0;
- mdio_write(ioaddr, lp->phys, 4, lp->advertising);
- }
- }
- return;
- cs_failed:
- cs_error(link->handle, last_fn, last_ret);
- failed:
- tc574_release((u_long)link);
- return;
- } /* tc574_config */
- /*
- After a card is removed, tc574_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 tc574_release(u_long arg)
- {
- dev_link_t *link = (dev_link_t *)arg;
- DEBUG(0, "3c574_release(0x%p)n", link);
- if (link->open) {
- DEBUG(1, "3c574_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;
- } /* tc574_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 tc574_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, "3c574_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;
- tc574_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) {
- tc574_reset(dev);
- netif_device_attach(dev);
- }
- }
- break;
- }
- return 0;
- } /* tc574_event */
- 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+RxStatus), inb(ioaddr+TxStatus),
- inw(ioaddr+TxFree));
- 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);
- }
- /*
- Use this for commands that may take time to finish
- */
- static void tc574_wait_for_completion(struct net_device *dev, int cmd)
- {
- int i = 1500;
- 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 timer;
- outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd);
- /* Pause for at least 162 usec for the read to take place. */
- for (timer = 1620; timer >= 0; timer--) {
- if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0)
- break;
- }
- return inw(ioaddr + Wn0EepromData);
- }
- /* MII transceiver control section.
- Read and write the MII registers using software-generated serial
- MDIO protocol. See the MII specifications or DP83840A data sheet
- for details.
- The maxium data clock rate is 2.5 Mhz. The timing is easily met by the
- slow PC card interface. */
- #define MDIO_SHIFT_CLK 0x01
- #define MDIO_DIR_WRITE 0x04
- #define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE)
- #define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE)
- #define MDIO_DATA_READ 0x02
- #define MDIO_ENB_IN 0x00
- /* Generate the preamble required for initial synchronization and
- a few older transceivers. */
- static void mdio_sync(ioaddr_t ioaddr, int bits)
- {
- int mdio_addr = ioaddr + Wn4_PhysicalMgmt;
- /* Establish sync by sending at least 32 logic ones. */
- while (-- bits >= 0) {
- outw(MDIO_DATA_WRITE1, mdio_addr);
- outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr);
- }
- }
- static int mdio_read(ioaddr_t ioaddr, int phy_id, int location)
- {
- int i;
- int read_cmd = (0xf6 << 10) | (phy_id << 5) | location;
- unsigned int retval = 0;
- int mdio_addr = ioaddr + Wn4_PhysicalMgmt;
- if (mii_preamble_required)
- mdio_sync(ioaddr, 32);
- /* Shift the read command bits out. */
- for (i = 14; i >= 0; i--) {
- int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
- outw(dataval, mdio_addr);
- outw(dataval | MDIO_SHIFT_CLK, mdio_addr);
- }
- /* Read the two transition, 16 data, and wire-idle bits. */
- for (i = 19; i > 0; i--) {
- outw(MDIO_ENB_IN, mdio_addr);
- retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0);
- outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr);
- }
- return (retval>>1) & 0xffff;
- }
- static void mdio_write(ioaddr_t ioaddr, int phy_id, int location, int value)
- {
- int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value;
- int mdio_addr = ioaddr + Wn4_PhysicalMgmt;
- int i;
- if (mii_preamble_required)
- mdio_sync(ioaddr, 32);
- /* Shift the command bits out. */
- for (i = 31; i >= 0; i--) {
- int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
- outw(dataval, mdio_addr);
- outw(dataval | MDIO_SHIFT_CLK, mdio_addr);
- }
- /* Leave the interface idle. */
- for (i = 1; i >= 0; i--) {
- outw(MDIO_ENB_IN, mdio_addr);
- outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr);
- }
- return;
- }
- /* Reset and restore all of the 3c574 registers. */
- static void tc574_reset(struct net_device *dev)
- {
- struct el3_private *lp = (struct el3_private *)dev->priv;
- int i, ioaddr = dev->base_addr;
- tc574_wait_for_completion(dev, TotalReset|0x10);
- /* Clear any transactions in progress. */
- outw(0, ioaddr + RunnerWrCtrl);
- outw(0, ioaddr + RunnerRdCtrl);
- /* Set the station address and mask. */
- EL3WINDOW(2);
- for (i = 0; i < 6; i++)
- outb(dev->dev_addr[i], ioaddr + i);
- for (; i < 12; i+=2)
- outw(0, ioaddr + i);
- /* Reset config options */
- EL3WINDOW(3);
- outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);
- outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b,
- ioaddr + Wn3_Config);
-
- /* Roadrunner only: Turn on the MII transceiver. */
- outw(0x8040, ioaddr + Wn3_Options);
- mdelay(1);
- outw(0xc040, ioaddr + Wn3_Options);
- tc574_wait_for_completion(dev, TxReset);
- tc574_wait_for_completion(dev, RxReset);
- mdelay(1);
- outw(0x8040, ioaddr + Wn3_Options);
- /* Switch to the stats window, and clear all stats by reading. */
- outw(StatsDisable, ioaddr + EL3_CMD);
- EL3WINDOW(6);
- for (i = 0; i < 10; i++)
- inb(ioaddr + i);
- inw(ioaddr + 10);
- inw(ioaddr + 12);
- EL3WINDOW(4);
- inb(ioaddr + 12);
- inb(ioaddr + 13);
- /* .. enable any extra statistics bits.. */
- outw(0x0040, ioaddr + Wn4_NetDiag);
- /* .. re-sync MII and re-fill what NWay is advertising. */
- mdio_sync(ioaddr, 32);
- mdio_write(ioaddr, lp->phys, 4, lp->advertising);
- if (!auto_polarity) {
- /* works for TDK 78Q2120 series MII's */
- int i = mdio_read(ioaddr, lp->phys, 16) | 0x20;
- mdio_write(ioaddr, lp->phys, 16, i);
- }
- /* Switch to register set 1 for normal use, just for TxFree. */
- 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 | RxEarly, ioaddr + EL3_CMD);
- }
- 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);
-
- tc574_reset(dev);
- lp->media.function = &media_check;
- lp->media.data = (u_long)lp;
- lp->media.expires = jiffies + HZ;
- add_timer(&lp->media);
-
- DEBUG(2, "%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. */
- tc574_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 + TxStatus);
- if (!(tx_status & 0x84)) break;
- /* reset transmitter on jabber error or underrun */
- if (tx_status & 0x30)
- tc574_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 + TxStatus); /* 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));
- outw(skb->len, ioaddr + TX_FIFO);
- outw(0, ioaddr + TX_FIFO);
- outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2);
- dev->trans_start = jiffies;
- /* TxFree appears only in Window 1, not offset 0x1c. */
- if (inw(ioaddr + TxFree) <= 1536) {
- netif_stop_queue(dev);
- /* Interrupt us when the FIFO has room for max-sized packet.
- The threshold is in units of dwords. */
- outw(SetTxThreshold + (1536>>2), 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 work_budget = max_interrupt_work;
- 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 | RxEarly | StatsFull)) {
- if (!netif_device_present(dev) ||
- ((status & 0xe000) != 0x2000)) {
- DEBUG(1, "%s: Interrupt from dead cardn", dev->name);
- break;
- }
- if (status & RxComplete)
- work_budget = el3_rx(dev, work_budget);
- 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)
- update_stats(dev);
- if (status & RxEarly) {
- work_budget = el3_rx(dev, work_budget);
- outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
- }
- if (status & AdapterFailure) {
- u16 fifo_diag;
- EL3WINDOW(4);
- fifo_diag = inw(ioaddr + Wn4_FIFODiag);
- EL3WINDOW(1);
- printk(KERN_NOTICE "%s: adapter failure, FIFO diagnostic"
- " register %04x.n", dev->name, fifo_diag);
- if (fifo_diag & 0x0400) {
- /* Tx overrun */
- tc574_wait_for_completion(dev, TxReset);
- outw(TxEnable, ioaddr + EL3_CMD);
- }
- if (fifo_diag & 0x2000) {
- /* Rx underrun */
- tc574_wait_for_completion(dev, RxReset);
- set_rx_mode(dev);
- outw(RxEnable, ioaddr + EL3_CMD);
- }
- outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
- }
- }
- if (--work_budget < 0) {
- DEBUG(0, "%s: Too much work 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);
- }
- DEBUG(3, "%s: exiting interrupt, status %4.4x.n",
- dev->name, inw(ioaddr + EL3_STATUS));
- return;
- }
- /*
- This timer serves two purposes: to check for missed interrupts
- (and as a last resort, poll the NIC for events), and to monitor
- the MII, reporting changes in cable status.
- */
- 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_long flags;
- u_short /* cable, */ media, partner;
- 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 + 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 + 2;
- add_timer(&lp->media);
- return;
- }
- save_flags(flags);
- cli();
- EL3WINDOW(4);
- media = mdio_read(ioaddr, lp->phys, 1);
- partner = mdio_read(ioaddr, lp->phys, 5);
- EL3WINDOW(1);
- restore_flags(flags);
- if (media != lp->media_status) {
- if ((media ^ lp->media_status) & 0x0004)
- printk(KERN_INFO "%s: %s link beatn", dev->name,
- (lp->media_status & 0x0004) ? "lost" : "found");
- if ((media ^ lp->media_status) & 0x0020) {
- lp->partner = 0;
- if (lp->media_status & 0x0020) {
- printk(KERN_INFO "%s: autonegotiation restartedn",
- dev->name);
- } else if (partner) {
- partner &= lp->advertising;
- lp->partner = partner;
- printk(KERN_INFO "%s: autonegotiation complete: "
- "%sbaseT-%cD selectedn", dev->name,
- ((partner & 0x0180) ? "100" : "10"),
- ((partner & 0x0140) ? 'F' : 'H'));
- } else {
- printk(KERN_INFO "%s: link partner did not autonegotiaten",
- dev->name);
- }
- EL3WINDOW(3);
- outb((partner & 0x0140 ? 0x20 : 0) |
- (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);
- EL3WINDOW(1);
- }
- if (media & 0x0010)
- printk(KERN_INFO "%s: remote fault detectedn",
- dev->name);
- if (media & 0x0002)
- printk(KERN_INFO "%s: jabber detectedn", dev->name);
- lp->media_status = media;
- }
- 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;
- if (netif_device_present(dev))
- update_stats(dev);
- return &lp->stats;
- }
- /* Update statistics.
- Suprisingly this need not be run single-threaded, but it effectively is.
- The counters clear when read, so the adds must merely be atomic.
- */
- static void update_stats(struct net_device *dev)
- {
- struct el3_private *lp = (struct el3_private *)dev->priv;
- ioaddr_t ioaddr = dev->base_addr;
- u8 rx, tx, up;
- DEBUG(2, "%s: updating the statistics.n", dev->name);
- if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */
- return;
- /* Unlike the 3c509 we need not turn off stats updates while reading. */
- /* 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);
- up = inb(ioaddr + 9);
- lp->stats.tx_packets += (up&0x30) << 4;
- /* Rx packets */ inb(ioaddr + 7);
- /* Tx deferrals */ inb(ioaddr + 8);
- rx = inw(ioaddr + 10);
- tx = inw(ioaddr + 12);
- EL3WINDOW(4);
- /* BadSSD */ inb(ioaddr + 12);
- up = inb(ioaddr + 13);
- lp->stats.tx_bytes += tx + ((up & 0xf0) << 12);
- EL3WINDOW(1);
- }
- static int el3_rx(struct net_device *dev, int worklimit)
- {
- struct el3_private *lp = (struct el3_private *)dev->priv;
- ioaddr_t ioaddr = dev->base_addr;
- 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+RxStatus));
- while (!((rx_status = inw(ioaddr + RxStatus)) & 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++;
- }
- }
- tc574_wait_for_completion(dev, RxDiscard);
- }
- return worklimit;
- }
- static int netdev_ethtool_ioctl(struct net_device *dev, void *useraddr)
- {
- u32 ethcmd;
-
- if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
- return -EFAULT;
-
- switch (ethcmd) {
- case ETHTOOL_GDRVINFO: {
- struct ethtool_drvinfo info = {ETHTOOL_GDRVINFO};
- strncpy(info.driver, "3c574_cs", sizeof(info.driver)-1);
- if (copy_to_user(useraddr, &info, sizeof(info)))
- return -EFAULT;
- return 0;
- }
- }
-
- return -EOPNOTSUPP;
- }
- /* Provide ioctl() calls to examine the MII xcvr state. */
- static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
- {
- struct el3_private *lp = (struct el3_private *)dev->priv;
- ioaddr_t ioaddr = dev->base_addr;
- u16 *data = (u16 *)&rq->ifr_data;
- int phy = lp->phys & 0x1f;
- DEBUG(2, "%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.n",
- dev->name, rq->ifr_ifrn.ifrn_name, cmd,
- data[0], data[1], data[2], data[3]);
- switch(cmd) {
- case SIOCETHTOOL:
- return netdev_ethtool_ioctl(dev, (void *)rq->ifr_data);
- case SIOCDEVPRIVATE: /* Get the address of the PHY in use. */
- data[0] = phy;
- case SIOCDEVPRIVATE+1: /* Read the specified MII register. */
- {
- int saved_window;
- unsigned long flags;
- save_flags(flags);
- cli();
- saved_window = inw(ioaddr + EL3_CMD) >> 13;
- EL3WINDOW(4);
- data[3] = mdio_read(ioaddr, data[0] & 0x1f, data[1] & 0x1f);
- EL3WINDOW(saved_window);
- restore_flags(flags);
- return 0;
- }
- case SIOCDEVPRIVATE+2: /* Write the specified MII register */
- {
- int saved_window;
- unsigned long flags;
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- save_flags(flags);
- cli();
- saved_window = inw(ioaddr + EL3_CMD) >> 13;
- EL3WINDOW(4);
- mdio_write(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2]);
- EL3WINDOW(saved_window);
- restore_flags(flags);
- return 0;
- }
- default:
- return -EOPNOTSUPP;
- }
- }
- /* The Odie chip has a 64 bin multicast filter, but the bit layout is not
- documented. Until it is we revert to receiving all multicast frames when
- any multicast reception is desired.
- Note: My other drivers emit a log message whenever promiscuous mode is
- entered to help detect password sniffers. This is less desirable on
- typical PC card machines, so we omit the message.
- */
- static void set_rx_mode(struct net_device *dev)
- {
- ioaddr_t ioaddr = dev->base_addr;
- if (dev->flags & IFF_PROMISC)
- outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
- ioaddr + EL3_CMD);
- else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
- outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD);
- else
- outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
- }
- static int el3_close(struct net_device *dev)
- {
- ioaddr_t ioaddr = dev->base_addr;
- struct el3_private *lp = dev->priv;
- dev_link_t *link = &lp->link;
- DEBUG(2, "%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);
-
- /* Note: Switching to window 0 may disable the IRQ. */
- EL3WINDOW(0);
-
- 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_3c574_cs(void)
- {
- servinfo_t serv;
- DEBUG(0, "%sn", version);
- CardServices(GetCardServicesInfo, &serv);
- if (serv.Revision != CS_RELEASE_CODE) {
- printk(KERN_NOTICE "3c574_cs: Card Services release "
- "does not match!n");
- return -1;
- }
- register_pccard_driver(&dev_info, &tc574_attach, &tc574_detach);
- return 0;
- }
- static void __exit exit_3c574_cs(void)
- {
- DEBUG(0, "3c574_cs: unloadingn");
- unregister_pccard_driver(&dev_info);
- while (dev_list != NULL)
- tc574_detach(dev_list);
- }
- module_init(init_3c574_cs);
- module_exit(exit_3c574_cs);
- /*
- * Local variables:
- * compile-command: "make 3c574_cs.o"
- * c-indent-level: 4
- * c-basic-offset: 4
- * tab-width: 4
- * End:
- */