1 /*======================================================================
3 A PCMCIA ethernet driver for the 3com 3c589 card.
5 Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net
7 3c589_cs.c 1.162 2001/10/13 00:08:50
9 The network driver code is based on Donald Becker's 3c589 code:
11 Written 1994 by Donald Becker.
12 Copyright 1993 United States Government as represented by the
13 Director, National Security Agency. This software may be used and
14 distributed according to the terms of the GNU General Public License,
15 incorporated herein by reference.
16 Donald Becker may be reached at becker@scyld.com
18 Updated for 2.5.x by Alan Cox <alan@redhat.com>
20 ======================================================================*/
22 #define DRV_NAME "3c589_cs"
23 #define DRV_VERSION "1.162-ac"
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/kernel.h>
28 #include <linux/ptrace.h>
29 #include <linux/slab.h>
30 #include <linux/string.h>
31 #include <linux/timer.h>
32 #include <linux/interrupt.h>
34 #include <linux/delay.h>
35 #include <linux/ethtool.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/skbuff.h>
39 #include <linux/if_arp.h>
40 #include <linux/ioport.h>
41 #include <linux/bitops.h>
43 #include <pcmcia/cs_types.h>
44 #include <pcmcia/cs.h>
45 #include <pcmcia/cistpl.h>
46 #include <pcmcia/cisreg.h>
47 #include <pcmcia/ciscode.h>
48 #include <pcmcia/ds.h>
50 #include <asm/uaccess.h>
52 #include <asm/system.h>
54 /* To minimize the size of the driver source I only define operating
55 constants if they are used several times. You'll need the manual
56 if you want to understand driver details. */
57 /* Offsets from base I/O address. */
59 #define EL3_TIMER 0x0a
61 #define EL3_STATUS 0x0e
63 #define EEPROM_READ 0x0080
64 #define EEPROM_BUSY 0x8000
66 #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
68 /* The top five bits written to EL3_CMD are a command, the lower
69 11 bits are the parameter, if applicable. */
71 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
72 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
73 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
74 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
75 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
76 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
77 StatsDisable = 22<<11, StopCoax = 23<<11,
81 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
82 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
83 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000
86 /* The SetRxFilter command accepts the following classes: */
88 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
91 /* Register window 1 offsets, the window used in normal operation. */
94 #define RX_STATUS 0x08
95 #define TX_STATUS 0x0B
96 #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
98 #define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
99 #define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
100 #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
101 #define MEDIA_LED 0x0001 /* Enable link light on 3C589E cards. */
103 /* Time in jiffies before concluding Tx hung */
104 #define TX_TIMEOUT ((400*HZ)/1000)
109 struct net_device_stats stats;
110 /* For transceiver monitoring */
111 struct timer_list media;
114 unsigned long last_irq;
118 static char *if_names[] = { "auto", "10baseT", "10base2", "AUI" };
120 /*====================================================================*/
122 /* Module parameters */
124 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
125 MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
126 MODULE_LICENSE("GPL");
128 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
130 /* Special hook for setting if_port when module is loaded */
131 INT_MODULE_PARM(if_port, 0);
134 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
135 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
136 static char *version =
137 DRV_NAME ".c " DRV_VERSION " 2001/10/13 00:08:50 (David Hinds)";
139 #define DEBUG(n, args...)
142 /*====================================================================*/
144 static void tc589_config(dev_link_t *link);
145 static void tc589_release(dev_link_t *link);
147 static u16 read_eeprom(kio_addr_t ioaddr, int index);
148 static void tc589_reset(struct net_device *dev);
149 static void media_check(unsigned long arg);
150 static int el3_config(struct net_device *dev, struct ifmap *map);
151 static int el3_open(struct net_device *dev);
152 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
153 static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs);
154 static void update_stats(struct net_device *dev);
155 static struct net_device_stats *el3_get_stats(struct net_device *dev);
156 static int el3_rx(struct net_device *dev);
157 static int el3_close(struct net_device *dev);
158 static void el3_tx_timeout(struct net_device *dev);
159 static void set_multicast_list(struct net_device *dev);
160 static struct ethtool_ops netdev_ethtool_ops;
162 static void tc589_detach(struct pcmcia_device *p_dev);
164 /*======================================================================
166 tc589_attach() creates an "instance" of the driver, allocating
167 local data structures for one device. The device is registered
170 ======================================================================*/
172 static int tc589_attach(struct pcmcia_device *p_dev)
174 struct el3_private *lp;
176 struct net_device *dev;
178 DEBUG(0, "3c589_attach()\n");
180 /* Create new ethernet device */
181 dev = alloc_etherdev(sizeof(struct el3_private));
184 lp = netdev_priv(dev);
188 spin_lock_init(&lp->lock);
189 link->io.NumPorts1 = 16;
190 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
191 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
192 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
193 link->irq.Handler = &el3_interrupt;
194 link->irq.Instance = dev;
195 link->conf.Attributes = CONF_ENABLE_IRQ;
197 link->conf.IntType = INT_MEMORY_AND_IO;
198 link->conf.ConfigIndex = 1;
199 link->conf.Present = PRESENT_OPTION;
201 /* The EL3-specific entries in the device structure. */
202 SET_MODULE_OWNER(dev);
203 dev->hard_start_xmit = &el3_start_xmit;
204 dev->set_config = &el3_config;
205 dev->get_stats = &el3_get_stats;
206 dev->set_multicast_list = &set_multicast_list;
207 dev->open = &el3_open;
208 dev->stop = &el3_close;
209 #ifdef HAVE_TX_TIMEOUT
210 dev->tx_timeout = el3_tx_timeout;
211 dev->watchdog_timeo = TX_TIMEOUT;
213 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
215 link->handle = p_dev;
216 p_dev->instance = link;
218 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
224 /*======================================================================
226 This deletes a driver "instance". The device is de-registered
227 with Card Services. If it has been released, all local data
228 structures are freed. Otherwise, the structures will be freed
229 when the device is released.
231 ======================================================================*/
233 static void tc589_detach(struct pcmcia_device *p_dev)
235 dev_link_t *link = dev_to_instance(p_dev);
236 struct net_device *dev = link->priv;
238 DEBUG(0, "3c589_detach(0x%p)\n", link);
241 unregister_netdev(dev);
243 if (link->state & DEV_CONFIG)
249 /*======================================================================
251 tc589_config() is scheduled to run after a CARD_INSERTION event
252 is received, to configure the PCMCIA socket, and to make the
253 ethernet device available to the system.
255 ======================================================================*/
257 #define CS_CHECK(fn, ret) \
258 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
260 static void tc589_config(dev_link_t *link)
262 client_handle_t handle = link->handle;
263 struct net_device *dev = link->priv;
264 struct el3_private *lp = netdev_priv(dev);
267 u16 buf[32], *phys_addr;
268 int last_fn, last_ret, i, j, multi = 0, fifo;
270 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
272 DEBUG(0, "3c589_config(0x%p)\n", link);
274 phys_addr = (u16 *)dev->dev_addr;
275 tuple.Attributes = 0;
276 tuple.DesiredTuple = CISTPL_CONFIG;
277 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
278 tuple.TupleData = (cisdata_t *)buf;
279 tuple.TupleDataMax = sizeof(buf);
280 tuple.TupleOffset = 0;
281 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
282 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
283 link->conf.ConfigBase = parse.config.base;
284 link->conf.Present = parse.config.rmask[0];
286 /* Is this a 3c562? */
287 tuple.DesiredTuple = CISTPL_MANFID;
288 tuple.Attributes = TUPLE_RETURN_COMMON;
289 if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
290 (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS)) {
291 if (le16_to_cpu(buf[0]) != MANFID_3COM)
292 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
294 multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
298 link->state |= DEV_CONFIG;
300 /* For the 3c562, the base address must be xx00-xx7f */
301 link->io.IOAddrLines = 16;
302 for (i = j = 0; j < 0x400; j += 0x10) {
303 if (multi && (j & 0x80)) continue;
304 link->io.BasePort1 = j ^ 0x300;
305 i = pcmcia_request_io(link->handle, &link->io);
306 if (i == CS_SUCCESS) break;
308 if (i != CS_SUCCESS) {
309 cs_error(link->handle, RequestIO, i);
312 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
313 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
315 dev->irq = link->irq.AssignedIRQ;
316 dev->base_addr = link->io.BasePort1;
317 ioaddr = dev->base_addr;
320 /* The 3c589 has an extra EEPROM for configuration info, including
321 the hardware address. The 3c562 puts the address in the CIS. */
322 tuple.DesiredTuple = 0x88;
323 if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) {
324 pcmcia_get_tuple_data(handle, &tuple);
325 for (i = 0; i < 3; i++)
326 phys_addr[i] = htons(buf[i]);
328 for (i = 0; i < 3; i++)
329 phys_addr[i] = htons(read_eeprom(ioaddr, i));
330 if (phys_addr[0] == 0x6060) {
331 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
332 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
337 /* The address and resource configuration register aren't loaded from
338 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
339 outw(0x3f00, ioaddr + 8);
342 /* The if_port symbol can be set when the module is loaded */
343 if ((if_port >= 0) && (if_port <= 3))
344 dev->if_port = if_port;
346 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
348 link->dev = &lp->node;
349 link->state &= ~DEV_CONFIG_PENDING;
350 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
352 if (register_netdev(dev) != 0) {
353 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
358 strcpy(lp->node.dev_name, dev->name);
360 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
361 dev->name, (multi ? "562" : "589"), dev->base_addr,
363 for (i = 0; i < 6; i++)
364 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
365 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
366 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
367 if_names[dev->if_port]);
371 cs_error(link->handle, last_fn, last_ret);
378 /*======================================================================
380 After a card is removed, tc589_release() will unregister the net
381 device, and release the PCMCIA configuration. If the device is
382 still open, this will be postponed until it is closed.
384 ======================================================================*/
386 static void tc589_release(dev_link_t *link)
388 DEBUG(0, "3c589_release(0x%p)\n", link);
390 pcmcia_release_configuration(link->handle);
391 pcmcia_release_io(link->handle, &link->io);
392 pcmcia_release_irq(link->handle, &link->irq);
394 link->state &= ~DEV_CONFIG;
397 static int tc589_suspend(struct pcmcia_device *p_dev)
399 dev_link_t *link = dev_to_instance(p_dev);
400 struct net_device *dev = link->priv;
402 link->state |= DEV_SUSPEND;
403 if (link->state & DEV_CONFIG) {
405 netif_device_detach(dev);
406 pcmcia_release_configuration(link->handle);
412 static int tc589_resume(struct pcmcia_device *p_dev)
414 dev_link_t *link = dev_to_instance(p_dev);
415 struct net_device *dev = link->priv;
417 link->state &= ~DEV_SUSPEND;
418 if (link->state & DEV_CONFIG) {
419 pcmcia_request_configuration(link->handle, &link->conf);
422 netif_device_attach(dev);
429 /*====================================================================*/
432 Use this for commands that may take time to finish
434 static void tc589_wait_for_completion(struct net_device *dev, int cmd)
437 outw(cmd, dev->base_addr + EL3_CMD);
439 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
441 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
446 Read a word from the EEPROM using the regular EEPROM access register.
447 Assume that we are in register window zero.
449 static u16 read_eeprom(kio_addr_t ioaddr, int index)
452 outw(EEPROM_READ + index, ioaddr + 10);
453 /* Reading the eeprom takes 162 us */
454 for (i = 1620; i >= 0; i--)
455 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
457 return inw(ioaddr + 12);
461 Set transceiver type, perhaps to something other than what the user
462 specified in dev->if_port.
464 static void tc589_set_xcvr(struct net_device *dev, int if_port)
466 struct el3_private *lp = netdev_priv(dev);
467 kio_addr_t ioaddr = dev->base_addr;
471 case 0: case 1: outw(0, ioaddr + 6); break;
472 case 2: outw(3<<14, ioaddr + 6); break;
473 case 3: outw(1<<14, ioaddr + 6); break;
475 /* On PCMCIA, this just turns on the LED */
476 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
477 /* 10baseT interface, enable link beat and jabber check. */
479 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
482 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
484 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
487 static void dump_status(struct net_device *dev)
489 kio_addr_t ioaddr = dev->base_addr;
491 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
492 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
493 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
494 inw(ioaddr+TX_FREE));
496 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
497 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
498 inw(ioaddr+0x08), inw(ioaddr+0x0a));
502 /* Reset and restore all of the 3c589 registers. */
503 static void tc589_reset(struct net_device *dev)
505 kio_addr_t ioaddr = dev->base_addr;
509 outw(0x0001, ioaddr + 4); /* Activate board. */
510 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
512 /* Set the station address in window 2. */
514 for (i = 0; i < 6; i++)
515 outb(dev->dev_addr[i], ioaddr + i);
517 tc589_set_xcvr(dev, dev->if_port);
519 /* Switch to the stats window, and clear all stats by reading. */
520 outw(StatsDisable, ioaddr + EL3_CMD);
522 for (i = 0; i < 9; i++)
527 /* Switch to register set 1 for normal use. */
530 /* Accept b-cast and phys addr only. */
531 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
532 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
533 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
534 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
535 /* Allow status bits to be seen. */
536 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
537 /* Ack all pending events, and set active indicator mask. */
538 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
540 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
541 | AdapterFailure, ioaddr + EL3_CMD);
544 static void netdev_get_drvinfo(struct net_device *dev,
545 struct ethtool_drvinfo *info)
547 strcpy(info->driver, DRV_NAME);
548 strcpy(info->version, DRV_VERSION);
549 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
553 static u32 netdev_get_msglevel(struct net_device *dev)
558 static void netdev_set_msglevel(struct net_device *dev, u32 level)
562 #endif /* PCMCIA_DEBUG */
564 static struct ethtool_ops netdev_ethtool_ops = {
565 .get_drvinfo = netdev_get_drvinfo,
567 .get_msglevel = netdev_get_msglevel,
568 .set_msglevel = netdev_set_msglevel,
569 #endif /* PCMCIA_DEBUG */
572 static int el3_config(struct net_device *dev, struct ifmap *map)
574 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
575 if (map->port <= 3) {
576 dev->if_port = map->port;
577 printk(KERN_INFO "%s: switched to %s port\n",
578 dev->name, if_names[dev->if_port]);
579 tc589_set_xcvr(dev, dev->if_port);
586 static int el3_open(struct net_device *dev)
588 struct el3_private *lp = netdev_priv(dev);
589 dev_link_t *link = &lp->link;
595 netif_start_queue(dev);
598 init_timer(&lp->media);
599 lp->media.function = &media_check;
600 lp->media.data = (unsigned long) dev;
601 lp->media.expires = jiffies + HZ;
602 add_timer(&lp->media);
604 DEBUG(1, "%s: opened, status %4.4x.\n",
605 dev->name, inw(dev->base_addr + EL3_STATUS));
610 static void el3_tx_timeout(struct net_device *dev)
612 struct el3_private *lp = netdev_priv(dev);
613 kio_addr_t ioaddr = dev->base_addr;
615 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
617 lp->stats.tx_errors++;
618 dev->trans_start = jiffies;
619 /* Issue TX_RESET and TX_START commands. */
620 tc589_wait_for_completion(dev, TxReset);
621 outw(TxEnable, ioaddr + EL3_CMD);
622 netif_wake_queue(dev);
625 static void pop_tx_status(struct net_device *dev)
627 struct el3_private *lp = netdev_priv(dev);
628 kio_addr_t ioaddr = dev->base_addr;
631 /* Clear the Tx status stack. */
632 for (i = 32; i > 0; i--) {
633 u_char tx_status = inb(ioaddr + TX_STATUS);
634 if (!(tx_status & 0x84)) break;
635 /* reset transmitter on jabber error or underrun */
636 if (tx_status & 0x30)
637 tc589_wait_for_completion(dev, TxReset);
638 if (tx_status & 0x38) {
639 DEBUG(1, "%s: transmit error: status 0x%02x\n",
640 dev->name, tx_status);
641 outw(TxEnable, ioaddr + EL3_CMD);
642 lp->stats.tx_aborted_errors++;
644 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
648 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
650 kio_addr_t ioaddr = dev->base_addr;
651 struct el3_private *priv = netdev_priv(dev);
653 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
654 "status %4.4x.\n", dev->name, (long)skb->len,
655 inw(ioaddr + EL3_STATUS));
657 priv->stats.tx_bytes += skb->len;
659 /* Put out the doubleword header... */
660 outw(skb->len, ioaddr + TX_FIFO);
661 outw(0x00, ioaddr + TX_FIFO);
662 /* ... and the packet rounded to a doubleword. */
663 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
665 dev->trans_start = jiffies;
666 if (inw(ioaddr + TX_FREE) <= 1536) {
667 netif_stop_queue(dev);
668 /* Interrupt us when the FIFO has room for max-sized packet. */
669 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
678 /* The EL3 interrupt handler. */
679 static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
681 struct net_device *dev = (struct net_device *) dev_id;
682 struct el3_private *lp = netdev_priv(dev);
685 int i = 0, handled = 1;
687 if (!netif_device_present(dev))
690 ioaddr = dev->base_addr;
692 DEBUG(3, "%s: interrupt, status %4.4x.\n",
693 dev->name, inw(ioaddr + EL3_STATUS));
695 spin_lock(&lp->lock);
696 while ((status = inw(ioaddr + EL3_STATUS)) &
697 (IntLatch | RxComplete | StatsFull)) {
698 if ((status & 0xe000) != 0x2000) {
699 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
704 if (status & RxComplete)
707 if (status & TxAvailable) {
708 DEBUG(3, " TX room bit was handled.\n");
709 /* There's room in the FIFO for a full-sized packet. */
710 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
711 netif_wake_queue(dev);
714 if (status & TxComplete)
717 if (status & (AdapterFailure | RxEarly | StatsFull)) {
718 /* Handle all uncommon interrupts. */
719 if (status & StatsFull) /* Empty statistics. */
721 if (status & RxEarly) { /* Rx early is unused. */
723 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
725 if (status & AdapterFailure) {
728 fifo_diag = inw(ioaddr + 4);
730 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
731 " register %04x.\n", dev->name, fifo_diag);
732 if (fifo_diag & 0x0400) {
734 tc589_wait_for_completion(dev, TxReset);
735 outw(TxEnable, ioaddr + EL3_CMD);
737 if (fifo_diag & 0x2000) {
739 tc589_wait_for_completion(dev, RxReset);
740 set_multicast_list(dev);
741 outw(RxEnable, ioaddr + EL3_CMD);
743 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
748 printk(KERN_ERR "%s: infinite loop in interrupt, "
749 "status %4.4x.\n", dev->name, status);
750 /* Clear all interrupts */
751 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
754 /* Acknowledge the IRQ. */
755 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
758 lp->last_irq = jiffies;
759 spin_unlock(&lp->lock);
760 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
761 dev->name, inw(ioaddr + EL3_STATUS));
762 return IRQ_RETVAL(handled);
765 static void media_check(unsigned long arg)
767 struct net_device *dev = (struct net_device *)(arg);
768 struct el3_private *lp = netdev_priv(dev);
769 kio_addr_t ioaddr = dev->base_addr;
773 if (!netif_device_present(dev)) goto reschedule;
776 /* Check for pending interrupt with expired latency timer: with
777 this, we can limp along even if the interrupt is blocked */
778 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
779 (inb(ioaddr + EL3_TIMER) == 0xff)) {
781 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
782 el3_interrupt(dev->irq, lp, NULL);
787 lp->media.expires = jiffies + HZ/100;
788 add_timer(&lp->media);
792 /* lp->lock guards the EL3 window. Window should always be 1 except
793 when the lock is held */
794 spin_lock_irqsave(&lp->lock, flags);
796 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
798 /* Ignore collisions unless we've had no irq's recently */
799 if (jiffies - lp->last_irq < HZ) {
802 /* Try harder to detect carrier errors */
804 outw(StatsDisable, ioaddr + EL3_CMD);
805 errs = inb(ioaddr + 0);
806 outw(StatsEnable, ioaddr + EL3_CMD);
807 lp->stats.tx_carrier_errors += errs;
808 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
811 if (media != lp->media_status) {
812 if ((media & lp->media_status & 0x8000) &&
813 ((lp->media_status ^ media) & 0x0800))
814 printk(KERN_INFO "%s: %s link beat\n", dev->name,
815 (lp->media_status & 0x0800 ? "lost" : "found"));
816 else if ((media & lp->media_status & 0x4000) &&
817 ((lp->media_status ^ media) & 0x0010))
818 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
819 (lp->media_status & 0x0010 ? "ok" : "problem"));
820 if (dev->if_port == 0) {
821 if (media & 0x8000) {
823 printk(KERN_INFO "%s: flipped to 10baseT\n",
826 tc589_set_xcvr(dev, 2);
827 } else if (media & 0x4000) {
829 tc589_set_xcvr(dev, 1);
831 printk(KERN_INFO "%s: flipped to 10base2\n",
835 lp->media_status = media;
839 spin_unlock_irqrestore(&lp->lock, flags);
842 lp->media.expires = jiffies + HZ;
843 add_timer(&lp->media);
846 static struct net_device_stats *el3_get_stats(struct net_device *dev)
848 struct el3_private *lp = netdev_priv(dev);
850 dev_link_t *link = &lp->link;
853 spin_lock_irqsave(&lp->lock, flags);
855 spin_unlock_irqrestore(&lp->lock, flags);
861 Update statistics. We change to register window 6, so this should be run
862 single-threaded if the device is active. This is expected to be a rare
863 operation, and it's simpler for the rest of the driver to assume that
864 window 1 is always valid rather than use a special window-state variable.
866 Caller must hold the lock for this
868 static void update_stats(struct net_device *dev)
870 struct el3_private *lp = netdev_priv(dev);
871 kio_addr_t ioaddr = dev->base_addr;
873 DEBUG(2, "%s: updating the statistics.\n", dev->name);
874 /* Turn off statistics updates while reading. */
875 outw(StatsDisable, ioaddr + EL3_CMD);
876 /* Switch to the stats window, and read everything. */
878 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
879 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
880 /* Multiple collisions. */ inb(ioaddr + 2);
881 lp->stats.collisions += inb(ioaddr + 3);
882 lp->stats.tx_window_errors += inb(ioaddr + 4);
883 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
884 lp->stats.tx_packets += inb(ioaddr + 6);
885 /* Rx packets */ inb(ioaddr + 7);
886 /* Tx deferrals */ inb(ioaddr + 8);
887 /* Rx octets */ inw(ioaddr + 10);
888 /* Tx octets */ inw(ioaddr + 12);
890 /* Back to window 1, and turn statistics back on. */
892 outw(StatsEnable, ioaddr + EL3_CMD);
895 static int el3_rx(struct net_device *dev)
897 struct el3_private *lp = netdev_priv(dev);
898 kio_addr_t ioaddr = dev->base_addr;
902 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
903 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
904 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
905 (--worklimit >= 0)) {
906 if (rx_status & 0x4000) { /* Error, update stats. */
907 short error = rx_status & 0x3800;
908 lp->stats.rx_errors++;
910 case 0x0000: lp->stats.rx_over_errors++; break;
911 case 0x0800: lp->stats.rx_length_errors++; break;
912 case 0x1000: lp->stats.rx_frame_errors++; break;
913 case 0x1800: lp->stats.rx_length_errors++; break;
914 case 0x2000: lp->stats.rx_frame_errors++; break;
915 case 0x2800: lp->stats.rx_crc_errors++; break;
918 short pkt_len = rx_status & 0x7ff;
921 skb = dev_alloc_skb(pkt_len+5);
923 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
928 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
930 skb->protocol = eth_type_trans(skb, dev);
932 dev->last_rx = jiffies;
933 lp->stats.rx_packets++;
934 lp->stats.rx_bytes += pkt_len;
936 DEBUG(1, "%s: couldn't allocate a sk_buff of"
937 " size %d.\n", dev->name, pkt_len);
938 lp->stats.rx_dropped++;
941 /* Pop the top of the Rx FIFO */
942 tc589_wait_for_completion(dev, RxDiscard);
945 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
949 static void set_multicast_list(struct net_device *dev)
951 struct el3_private *lp = netdev_priv(dev);
952 dev_link_t *link = &lp->link;
953 kio_addr_t ioaddr = dev->base_addr;
954 u16 opts = SetRxFilter | RxStation | RxBroadcast;
956 if (!(DEV_OK(link))) return;
957 if (dev->flags & IFF_PROMISC)
958 opts |= RxMulticast | RxProm;
959 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
961 outw(opts, ioaddr + EL3_CMD);
964 static int el3_close(struct net_device *dev)
966 struct el3_private *lp = netdev_priv(dev);
967 dev_link_t *link = &lp->link;
968 kio_addr_t ioaddr = dev->base_addr;
970 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
973 /* Turn off statistics ASAP. We update lp->stats below. */
974 outw(StatsDisable, ioaddr + EL3_CMD);
976 /* Disable the receiver and transmitter. */
977 outw(RxDisable, ioaddr + EL3_CMD);
978 outw(TxDisable, ioaddr + EL3_CMD);
980 if (dev->if_port == 2)
981 /* Turn off thinnet power. Green! */
982 outw(StopCoax, ioaddr + EL3_CMD);
983 else if (dev->if_port == 1) {
984 /* Disable link beat and jabber */
986 outw(0, ioaddr + WN4_MEDIA);
989 /* Switching back to window 0 disables the IRQ. */
991 /* But we explicitly zero the IRQ line select anyway. */
992 outw(0x0f00, ioaddr + WN0_IRQ);
994 /* Check if the card still exists */
995 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
1000 netif_stop_queue(dev);
1001 del_timer_sync(&lp->media);
1006 static struct pcmcia_device_id tc589_ids[] = {
1007 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
1008 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
1009 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
1010 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
1011 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
1012 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
1015 MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
1017 static struct pcmcia_driver tc589_driver = {
1018 .owner = THIS_MODULE,
1022 .probe = tc589_attach,
1023 .remove = tc589_detach,
1024 .id_table = tc589_ids,
1025 .suspend = tc589_suspend,
1026 .resume = tc589_resume,
1029 static int __init init_tc589(void)
1031 return pcmcia_register_driver(&tc589_driver);
1034 static void __exit exit_tc589(void)
1036 pcmcia_unregister_driver(&tc589_driver);
1039 module_init(init_tc589);
1040 module_exit(exit_tc589);