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[PATCH] pcmcia: remove unneeded Vcc pseudo setting
[firewire-audio.git] / drivers / net / pcmcia / 3c589_cs.c
blob7e8036f2e19ec0731f6c4d6518548547792e608f
1 /*======================================================================
2
3 A PCMCIA ethernet driver for the 3com 3c589 card.
4
5 Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net
6
7 3c589_cs.c 1.162 2001/10/13 00:08:50
8
9 The network driver code is based on Donald Becker's 3c589 code:
10
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
17
18 Updated for 2.5.x by Alan Cox <alan@redhat.com>
19
20 ======================================================================*/
21
22 #define DRV_NAME "3c589_cs"
23 #define DRV_VERSION "1.162-ac"
24
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>
33 #include <linux/in.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>
42 #include <linux/jiffies.h>
43
44 #include <pcmcia/cs_types.h>
45 #include <pcmcia/cs.h>
46 #include <pcmcia/cistpl.h>
47 #include <pcmcia/cisreg.h>
48 #include <pcmcia/ciscode.h>
49 #include <pcmcia/ds.h>
50
51 #include <asm/uaccess.h>
52 #include <asm/io.h>
53 #include <asm/system.h>
54
55 /* To minimize the size of the driver source I only define operating
56 constants if they are used several times. You'll need the manual
57 if you want to understand driver details. */
58 /* Offsets from base I/O address. */
59 #define EL3_DATA 0x00
60 #define EL3_TIMER 0x0a
61 #define EL3_CMD 0x0e
62 #define EL3_STATUS 0x0e
63
64 #define EEPROM_READ 0x0080
65 #define EEPROM_BUSY 0x8000
66
67 #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
68
69 /* The top five bits written to EL3_CMD are a command, the lower
70 11 bits are the parameter, if applicable. */
71 enum c509cmd {
72 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
73 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
74 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
75 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
76 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
77 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
78 StatsDisable = 22<<11, StopCoax = 23<<11,
79 };
80
81 enum c509status {
82 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
83 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
84 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000
85 };
86
87 /* The SetRxFilter command accepts the following classes: */
88 enum RxFilter {
89 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
90 };
91
92 /* Register window 1 offsets, the window used in normal operation. */
93 #define TX_FIFO 0x00
94 #define RX_FIFO 0x00
95 #define RX_STATUS 0x08
96 #define TX_STATUS 0x0B
97 #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
98
99 #define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
100 #define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
101 #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
102 #define MEDIA_LED 0x0001 /* Enable link light on 3C589E cards. */
103
104 /* Time in jiffies before concluding Tx hung */
105 #define TX_TIMEOUT ((400*HZ)/1000)
106
107 struct el3_private {
108 dev_link_t link;
109 dev_node_t node;
110 struct net_device_stats stats;
111 /* For transceiver monitoring */
112 struct timer_list media;
113 u16 media_status;
114 u16 fast_poll;
115 unsigned long last_irq;
116 spinlock_t lock;
117 };
118
119 static const char *if_names[] = { "auto", "10baseT", "10base2", "AUI" };
120
121 /*====================================================================*/
122
123 /* Module parameters */
124
125 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
126 MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
127 MODULE_LICENSE("GPL");
128
129 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
130
131 /* Special hook for setting if_port when module is loaded */
132 INT_MODULE_PARM(if_port, 0);
133
134 #ifdef PCMCIA_DEBUG
135 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
136 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
137 static char *version =
138 DRV_NAME ".c " DRV_VERSION " 2001/10/13 00:08:50 (David Hinds)";
139 #else
140 #define DEBUG(n, args...)
141 #endif
142
143 /*====================================================================*/
144
145 static void tc589_config(dev_link_t *link);
146 static void tc589_release(dev_link_t *link);
147
148 static u16 read_eeprom(kio_addr_t ioaddr, int index);
149 static void tc589_reset(struct net_device *dev);
150 static void media_check(unsigned long arg);
151 static int el3_config(struct net_device *dev, struct ifmap *map);
152 static int el3_open(struct net_device *dev);
153 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
154 static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs);
155 static void update_stats(struct net_device *dev);
156 static struct net_device_stats *el3_get_stats(struct net_device *dev);
157 static int el3_rx(struct net_device *dev);
158 static int el3_close(struct net_device *dev);
159 static void el3_tx_timeout(struct net_device *dev);
160 static void set_multicast_list(struct net_device *dev);
161 static struct ethtool_ops netdev_ethtool_ops;
162
163 static void tc589_detach(struct pcmcia_device *p_dev);
164
165 /*======================================================================
166
167 tc589_attach() creates an "instance" of the driver, allocating
168 local data structures for one device. The device is registered
169 with Card Services.
170
171 ======================================================================*/
172
173 static int tc589_attach(struct pcmcia_device *p_dev)
174 {
175 struct el3_private *lp;
176 dev_link_t *link;
177 struct net_device *dev;
178
179 DEBUG(0, "3c589_attach()\n");
180
181 /* Create new ethernet device */
182 dev = alloc_etherdev(sizeof(struct el3_private));
183 if (!dev)
184 return -ENOMEM;
185 lp = netdev_priv(dev);
186 link = &lp->link;
187 link->priv = dev;
188
189 spin_lock_init(&lp->lock);
190 link->io.NumPorts1 = 16;
191 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
192 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
193 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
194 link->irq.Handler = &el3_interrupt;
195 link->irq.Instance = dev;
196 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;
200
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;
212 #endif
213 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
214
215 link->handle = p_dev;
216 p_dev->instance = link;
217
218 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
219 tc589_config(link);
220
221 return 0;
222 } /* tc589_attach */
223
224 /*======================================================================
225
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.
230
231 ======================================================================*/
232
233 static void tc589_detach(struct pcmcia_device *p_dev)
234 {
235 dev_link_t *link = dev_to_instance(p_dev);
236 struct net_device *dev = link->priv;
237
238 DEBUG(0, "3c589_detach(0x%p)\n", link);
239
240 if (link->dev)
241 unregister_netdev(dev);
242
243 if (link->state & DEV_CONFIG)
244 tc589_release(link);
245
246 free_netdev(dev);
247 } /* tc589_detach */
248
249 /*======================================================================
250
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.
254
255 ======================================================================*/
256
257 #define CS_CHECK(fn, ret) \
258 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
259
260 static void tc589_config(dev_link_t *link)
261 {
262 client_handle_t handle = link->handle;
263 struct net_device *dev = link->priv;
264 struct el3_private *lp = netdev_priv(dev);
265 tuple_t tuple;
266 cisparse_t parse;
267 u16 buf[32], *phys_addr;
268 int last_fn, last_ret, i, j, multi = 0, fifo;
269 kio_addr_t ioaddr;
270 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
271
272 DEBUG(0, "3c589_config(0x%p)\n", link);
273
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];
285
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 "
293 "3Com card??\n");
294 multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
295 }
296
297 /* Configure card */
298 link->state |= DEV_CONFIG;
299
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;
307 }
308 if (i != CS_SUCCESS) {
309 cs_error(link->handle, RequestIO, i);
310 goto failed;
311 }
312 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
313 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
314
315 dev->irq = link->irq.AssignedIRQ;
316 dev->base_addr = link->io.BasePort1;
317 ioaddr = dev->base_addr;
318 EL3WINDOW(0);
319
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]);
327 } else {
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);
333 goto failed;
334 }
335 }
336
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);
340 fifo = inl(ioaddr);
341
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;
345 else
346 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
347
348 link->dev = &lp->node;
349 link->state &= ~DEV_CONFIG_PENDING;
350 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
351
352 if (register_netdev(dev) != 0) {
353 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
354 link->dev = NULL;
355 goto failed;
356 }
357
358 strcpy(lp->node.dev_name, dev->name);
359
360 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
361 dev->name, (multi ? "562" : "589"), dev->base_addr,
362 dev->irq);
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]);
368 return;
369
370 cs_failed:
371 cs_error(link->handle, last_fn, last_ret);
372 failed:
373 tc589_release(link);
374 return;
375
376 } /* tc589_config */
377
378 /*======================================================================
379
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.
383
384 ======================================================================*/
385
386 static void tc589_release(dev_link_t *link)
387 {
388 pcmcia_disable_device(link->handle);
389 }
390
391 static int tc589_suspend(struct pcmcia_device *p_dev)
392 {
393 dev_link_t *link = dev_to_instance(p_dev);
394 struct net_device *dev = link->priv;
395
396 if ((link->state & DEV_CONFIG) && (link->open))
397 netif_device_detach(dev);
398
399 return 0;
400 }
401
402 static int tc589_resume(struct pcmcia_device *p_dev)
403 {
404 dev_link_t *link = dev_to_instance(p_dev);
405 struct net_device *dev = link->priv;
406
407 if ((link->state & DEV_CONFIG) && (link->open)) {
408 tc589_reset(dev);
409 netif_device_attach(dev);
410 }
411
412 return 0;
413 }
414
415 /*====================================================================*/
416
417 /*
418 Use this for commands that may take time to finish
419 */
420 static void tc589_wait_for_completion(struct net_device *dev, int cmd)
421 {
422 int i = 100;
423 outw(cmd, dev->base_addr + EL3_CMD);
424 while (--i > 0)
425 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
426 if (i == 0)
427 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
428 dev->name, cmd);
429 }
430
431 /*
432 Read a word from the EEPROM using the regular EEPROM access register.
433 Assume that we are in register window zero.
434 */
435 static u16 read_eeprom(kio_addr_t ioaddr, int index)
436 {
437 int i;
438 outw(EEPROM_READ + index, ioaddr + 10);
439 /* Reading the eeprom takes 162 us */
440 for (i = 1620; i >= 0; i--)
441 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
442 break;
443 return inw(ioaddr + 12);
444 }
445
446 /*
447 Set transceiver type, perhaps to something other than what the user
448 specified in dev->if_port.
449 */
450 static void tc589_set_xcvr(struct net_device *dev, int if_port)
451 {
452 struct el3_private *lp = netdev_priv(dev);
453 kio_addr_t ioaddr = dev->base_addr;
454
455 EL3WINDOW(0);
456 switch (if_port) {
457 case 0: case 1: outw(0, ioaddr + 6); break;
458 case 2: outw(3<<14, ioaddr + 6); break;
459 case 3: outw(1<<14, ioaddr + 6); break;
460 }
461 /* On PCMCIA, this just turns on the LED */
462 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
463 /* 10baseT interface, enable link beat and jabber check. */
464 EL3WINDOW(4);
465 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
466 EL3WINDOW(1);
467 if (if_port == 2)
468 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
469 else
470 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
471 }
472
473 static void dump_status(struct net_device *dev)
474 {
475 kio_addr_t ioaddr = dev->base_addr;
476 EL3WINDOW(1);
477 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
478 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
479 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
480 inw(ioaddr+TX_FREE));
481 EL3WINDOW(4);
482 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
483 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
484 inw(ioaddr+0x08), inw(ioaddr+0x0a));
485 EL3WINDOW(1);
486 }
487
488 /* Reset and restore all of the 3c589 registers. */
489 static void tc589_reset(struct net_device *dev)
490 {
491 kio_addr_t ioaddr = dev->base_addr;
492 int i;
493
494 EL3WINDOW(0);
495 outw(0x0001, ioaddr + 4); /* Activate board. */
496 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
497
498 /* Set the station address in window 2. */
499 EL3WINDOW(2);
500 for (i = 0; i < 6; i++)
501 outb(dev->dev_addr[i], ioaddr + i);
502
503 tc589_set_xcvr(dev, dev->if_port);
504
505 /* Switch to the stats window, and clear all stats by reading. */
506 outw(StatsDisable, ioaddr + EL3_CMD);
507 EL3WINDOW(6);
508 for (i = 0; i < 9; i++)
509 inb(ioaddr+i);
510 inw(ioaddr + 10);
511 inw(ioaddr + 12);
512
513 /* Switch to register set 1 for normal use. */
514 EL3WINDOW(1);
515
516 /* Accept b-cast and phys addr only. */
517 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
518 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
519 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
520 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
521 /* Allow status bits to be seen. */
522 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
523 /* Ack all pending events, and set active indicator mask. */
524 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
525 ioaddr + EL3_CMD);
526 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
527 | AdapterFailure, ioaddr + EL3_CMD);
528 }
529
530 static void netdev_get_drvinfo(struct net_device *dev,
531 struct ethtool_drvinfo *info)
532 {
533 strcpy(info->driver, DRV_NAME);
534 strcpy(info->version, DRV_VERSION);
535 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
536 }
537
538 #ifdef PCMCIA_DEBUG
539 static u32 netdev_get_msglevel(struct net_device *dev)
540 {
541 return pc_debug;
542 }
543
544 static void netdev_set_msglevel(struct net_device *dev, u32 level)
545 {
546 pc_debug = level;
547 }
548 #endif /* PCMCIA_DEBUG */
549
550 static struct ethtool_ops netdev_ethtool_ops = {
551 .get_drvinfo = netdev_get_drvinfo,
552 #ifdef PCMCIA_DEBUG
553 .get_msglevel = netdev_get_msglevel,
554 .set_msglevel = netdev_set_msglevel,
555 #endif /* PCMCIA_DEBUG */
556 };
557
558 static int el3_config(struct net_device *dev, struct ifmap *map)
559 {
560 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
561 if (map->port <= 3) {
562 dev->if_port = map->port;
563 printk(KERN_INFO "%s: switched to %s port\n",
564 dev->name, if_names[dev->if_port]);
565 tc589_set_xcvr(dev, dev->if_port);
566 } else
567 return -EINVAL;
568 }
569 return 0;
570 }
571
572 static int el3_open(struct net_device *dev)
573 {
574 struct el3_private *lp = netdev_priv(dev);
575 dev_link_t *link = &lp->link;
576
577 if (!DEV_OK(link))
578 return -ENODEV;
579
580 link->open++;
581 netif_start_queue(dev);
582
583 tc589_reset(dev);
584 init_timer(&lp->media);
585 lp->media.function = &media_check;
586 lp->media.data = (unsigned long) dev;
587 lp->media.expires = jiffies + HZ;
588 add_timer(&lp->media);
589
590 DEBUG(1, "%s: opened, status %4.4x.\n",
591 dev->name, inw(dev->base_addr + EL3_STATUS));
592
593 return 0;
594 }
595
596 static void el3_tx_timeout(struct net_device *dev)
597 {
598 struct el3_private *lp = netdev_priv(dev);
599 kio_addr_t ioaddr = dev->base_addr;
600
601 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
602 dump_status(dev);
603 lp->stats.tx_errors++;
604 dev->trans_start = jiffies;
605 /* Issue TX_RESET and TX_START commands. */
606 tc589_wait_for_completion(dev, TxReset);
607 outw(TxEnable, ioaddr + EL3_CMD);
608 netif_wake_queue(dev);
609 }
610
611 static void pop_tx_status(struct net_device *dev)
612 {
613 struct el3_private *lp = netdev_priv(dev);
614 kio_addr_t ioaddr = dev->base_addr;
615 int i;
616
617 /* Clear the Tx status stack. */
618 for (i = 32; i > 0; i--) {
619 u_char tx_status = inb(ioaddr + TX_STATUS);
620 if (!(tx_status & 0x84)) break;
621 /* reset transmitter on jabber error or underrun */
622 if (tx_status & 0x30)
623 tc589_wait_for_completion(dev, TxReset);
624 if (tx_status & 0x38) {
625 DEBUG(1, "%s: transmit error: status 0x%02x\n",
626 dev->name, tx_status);
627 outw(TxEnable, ioaddr + EL3_CMD);
628 lp->stats.tx_aborted_errors++;
629 }
630 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
631 }
632 }
633
634 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
635 {
636 kio_addr_t ioaddr = dev->base_addr;
637 struct el3_private *priv = netdev_priv(dev);
638
639 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
640 "status %4.4x.\n", dev->name, (long)skb->len,
641 inw(ioaddr + EL3_STATUS));
642
643 priv->stats.tx_bytes += skb->len;
644
645 /* Put out the doubleword header... */
646 outw(skb->len, ioaddr + TX_FIFO);
647 outw(0x00, ioaddr + TX_FIFO);
648 /* ... and the packet rounded to a doubleword. */
649 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
650
651 dev->trans_start = jiffies;
652 if (inw(ioaddr + TX_FREE) <= 1536) {
653 netif_stop_queue(dev);
654 /* Interrupt us when the FIFO has room for max-sized packet. */
655 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
656 }
657
658 dev_kfree_skb(skb);
659 pop_tx_status(dev);
660
661 return 0;
662 }
663
664 /* The EL3 interrupt handler. */
665 static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
666 {
667 struct net_device *dev = (struct net_device *) dev_id;
668 struct el3_private *lp = netdev_priv(dev);
669 kio_addr_t ioaddr;
670 __u16 status;
671 int i = 0, handled = 1;
672
673 if (!netif_device_present(dev))
674 return IRQ_NONE;
675
676 ioaddr = dev->base_addr;
677
678 DEBUG(3, "%s: interrupt, status %4.4x.\n",
679 dev->name, inw(ioaddr + EL3_STATUS));
680
681 spin_lock(&lp->lock);
682 while ((status = inw(ioaddr + EL3_STATUS)) &
683 (IntLatch | RxComplete | StatsFull)) {
684 if ((status & 0xe000) != 0x2000) {
685 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
686 handled = 0;
687 break;
688 }
689
690 if (status & RxComplete)
691 el3_rx(dev);
692
693 if (status & TxAvailable) {
694 DEBUG(3, " TX room bit was handled.\n");
695 /* There's room in the FIFO for a full-sized packet. */
696 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
697 netif_wake_queue(dev);
698 }
699
700 if (status & TxComplete)
701 pop_tx_status(dev);
702
703 if (status & (AdapterFailure | RxEarly | StatsFull)) {
704 /* Handle all uncommon interrupts. */
705 if (status & StatsFull) /* Empty statistics. */
706 update_stats(dev);
707 if (status & RxEarly) { /* Rx early is unused. */
708 el3_rx(dev);
709 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
710 }
711 if (status & AdapterFailure) {
712 u16 fifo_diag;
713 EL3WINDOW(4);
714 fifo_diag = inw(ioaddr + 4);
715 EL3WINDOW(1);
716 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
717 " register %04x.\n", dev->name, fifo_diag);
718 if (fifo_diag & 0x0400) {
719 /* Tx overrun */
720 tc589_wait_for_completion(dev, TxReset);
721 outw(TxEnable, ioaddr + EL3_CMD);
722 }
723 if (fifo_diag & 0x2000) {
724 /* Rx underrun */
725 tc589_wait_for_completion(dev, RxReset);
726 set_multicast_list(dev);
727 outw(RxEnable, ioaddr + EL3_CMD);
728 }
729 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
730 }
731 }
732
733 if (++i > 10) {
734 printk(KERN_ERR "%s: infinite loop in interrupt, "
735 "status %4.4x.\n", dev->name, status);
736 /* Clear all interrupts */
737 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
738 break;
739 }
740 /* Acknowledge the IRQ. */
741 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
742 }
743
744 lp->last_irq = jiffies;
745 spin_unlock(&lp->lock);
746 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
747 dev->name, inw(ioaddr + EL3_STATUS));
748 return IRQ_RETVAL(handled);
749 }
750
751 static void media_check(unsigned long arg)
752 {
753 struct net_device *dev = (struct net_device *)(arg);
754 struct el3_private *lp = netdev_priv(dev);
755 kio_addr_t ioaddr = dev->base_addr;
756 u16 media, errs;
757 unsigned long flags;
758
759 if (!netif_device_present(dev)) goto reschedule;
760
761 EL3WINDOW(1);
762 /* Check for pending interrupt with expired latency timer: with
763 this, we can limp along even if the interrupt is blocked */
764 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
765 (inb(ioaddr + EL3_TIMER) == 0xff)) {
766 if (!lp->fast_poll)
767 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
768 el3_interrupt(dev->irq, lp, NULL);
769 lp->fast_poll = HZ;
770 }
771 if (lp->fast_poll) {
772 lp->fast_poll--;
773 lp->media.expires = jiffies + HZ/100;
774 add_timer(&lp->media);
775 return;
776 }
777
778 /* lp->lock guards the EL3 window. Window should always be 1 except
779 when the lock is held */
780 spin_lock_irqsave(&lp->lock, flags);
781 EL3WINDOW(4);
782 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
783
784 /* Ignore collisions unless we've had no irq's recently */
785 if (time_before(jiffies, lp->last_irq + HZ)) {
786 media &= ~0x0010;
787 } else {
788 /* Try harder to detect carrier errors */
789 EL3WINDOW(6);
790 outw(StatsDisable, ioaddr + EL3_CMD);
791 errs = inb(ioaddr + 0);
792 outw(StatsEnable, ioaddr + EL3_CMD);
793 lp->stats.tx_carrier_errors += errs;
794 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
795 }
796
797 if (media != lp->media_status) {
798 if ((media & lp->media_status & 0x8000) &&
799 ((lp->media_status ^ media) & 0x0800))
800 printk(KERN_INFO "%s: %s link beat\n", dev->name,
801 (lp->media_status & 0x0800 ? "lost" : "found"));
802 else if ((media & lp->media_status & 0x4000) &&
803 ((lp->media_status ^ media) & 0x0010))
804 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
805 (lp->media_status & 0x0010 ? "ok" : "problem"));
806 if (dev->if_port == 0) {
807 if (media & 0x8000) {
808 if (media & 0x0800)
809 printk(KERN_INFO "%s: flipped to 10baseT\n",
810 dev->name);
811 else
812 tc589_set_xcvr(dev, 2);
813 } else if (media & 0x4000) {
814 if (media & 0x0010)
815 tc589_set_xcvr(dev, 1);
816 else
817 printk(KERN_INFO "%s: flipped to 10base2\n",
818 dev->name);
819 }
820 }
821 lp->media_status = media;
822 }
823
824 EL3WINDOW(1);
825 spin_unlock_irqrestore(&lp->lock, flags);
826
827 reschedule:
828 lp->media.expires = jiffies + HZ;
829 add_timer(&lp->media);
830 }
831
832 static struct net_device_stats *el3_get_stats(struct net_device *dev)
833 {
834 struct el3_private *lp = netdev_priv(dev);
835 unsigned long flags;
836 dev_link_t *link = &lp->link;
837
838 if (DEV_OK(link)) {
839 spin_lock_irqsave(&lp->lock, flags);
840 update_stats(dev);
841 spin_unlock_irqrestore(&lp->lock, flags);
842 }
843 return &lp->stats;
844 }
845
846 /*
847 Update statistics. We change to register window 6, so this should be run
848 single-threaded if the device is active. This is expected to be a rare
849 operation, and it's simpler for the rest of the driver to assume that
850 window 1 is always valid rather than use a special window-state variable.
851
852 Caller must hold the lock for this
853 */
854 static void update_stats(struct net_device *dev)
855 {
856 struct el3_private *lp = netdev_priv(dev);
857 kio_addr_t ioaddr = dev->base_addr;
858
859 DEBUG(2, "%s: updating the statistics.\n", dev->name);
860 /* Turn off statistics updates while reading. */
861 outw(StatsDisable, ioaddr + EL3_CMD);
862 /* Switch to the stats window, and read everything. */
863 EL3WINDOW(6);
864 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
865 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
866 /* Multiple collisions. */ inb(ioaddr + 2);
867 lp->stats.collisions += inb(ioaddr + 3);
868 lp->stats.tx_window_errors += inb(ioaddr + 4);
869 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
870 lp->stats.tx_packets += inb(ioaddr + 6);
871 /* Rx packets */ inb(ioaddr + 7);
872 /* Tx deferrals */ inb(ioaddr + 8);
873 /* Rx octets */ inw(ioaddr + 10);
874 /* Tx octets */ inw(ioaddr + 12);
875
876 /* Back to window 1, and turn statistics back on. */
877 EL3WINDOW(1);
878 outw(StatsEnable, ioaddr + EL3_CMD);
879 }
880
881 static int el3_rx(struct net_device *dev)
882 {
883 struct el3_private *lp = netdev_priv(dev);
884 kio_addr_t ioaddr = dev->base_addr;
885 int worklimit = 32;
886 short rx_status;
887
888 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
889 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
890 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
891 (--worklimit >= 0)) {
892 if (rx_status & 0x4000) { /* Error, update stats. */
893 short error = rx_status & 0x3800;
894 lp->stats.rx_errors++;
895 switch (error) {
896 case 0x0000: lp->stats.rx_over_errors++; break;
897 case 0x0800: lp->stats.rx_length_errors++; break;
898 case 0x1000: lp->stats.rx_frame_errors++; break;
899 case 0x1800: lp->stats.rx_length_errors++; break;
900 case 0x2000: lp->stats.rx_frame_errors++; break;
901 case 0x2800: lp->stats.rx_crc_errors++; break;
902 }
903 } else {
904 short pkt_len = rx_status & 0x7ff;
905 struct sk_buff *skb;
906
907 skb = dev_alloc_skb(pkt_len+5);
908
909 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
910 pkt_len, rx_status);
911 if (skb != NULL) {
912 skb->dev = dev;
913 skb_reserve(skb, 2);
914 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
915 (pkt_len+3)>>2);
916 skb->protocol = eth_type_trans(skb, dev);
917 netif_rx(skb);
918 dev->last_rx = jiffies;
919 lp->stats.rx_packets++;
920 lp->stats.rx_bytes += pkt_len;
921 } else {
922 DEBUG(1, "%s: couldn't allocate a sk_buff of"
923 " size %d.\n", dev->name, pkt_len);
924 lp->stats.rx_dropped++;
925 }
926 }
927 /* Pop the top of the Rx FIFO */
928 tc589_wait_for_completion(dev, RxDiscard);
929 }
930 if (worklimit == 0)
931 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
932 return 0;
933 }
934
935 static void set_multicast_list(struct net_device *dev)
936 {
937 struct el3_private *lp = netdev_priv(dev);
938 dev_link_t *link = &lp->link;
939 kio_addr_t ioaddr = dev->base_addr;
940 u16 opts = SetRxFilter | RxStation | RxBroadcast;
941
942 if (!(DEV_OK(link))) return;
943 if (dev->flags & IFF_PROMISC)
944 opts |= RxMulticast | RxProm;
945 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
946 opts |= RxMulticast;
947 outw(opts, ioaddr + EL3_CMD);
948 }
949
950 static int el3_close(struct net_device *dev)
951 {
952 struct el3_private *lp = netdev_priv(dev);
953 dev_link_t *link = &lp->link;
954 kio_addr_t ioaddr = dev->base_addr;
955
956 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
957
958 if (DEV_OK(link)) {
959 /* Turn off statistics ASAP. We update lp->stats below. */
960 outw(StatsDisable, ioaddr + EL3_CMD);
961
962 /* Disable the receiver and transmitter. */
963 outw(RxDisable, ioaddr + EL3_CMD);
964 outw(TxDisable, ioaddr + EL3_CMD);
965
966 if (dev->if_port == 2)
967 /* Turn off thinnet power. Green! */
968 outw(StopCoax, ioaddr + EL3_CMD);
969 else if (dev->if_port == 1) {
970 /* Disable link beat and jabber */
971 EL3WINDOW(4);
972 outw(0, ioaddr + WN4_MEDIA);
973 }
974
975 /* Switching back to window 0 disables the IRQ. */
976 EL3WINDOW(0);
977 /* But we explicitly zero the IRQ line select anyway. */
978 outw(0x0f00, ioaddr + WN0_IRQ);
979
980 /* Check if the card still exists */
981 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
982 update_stats(dev);
983 }
984
985 link->open--;
986 netif_stop_queue(dev);
987 del_timer_sync(&lp->media);
988
989 return 0;
990 }
991
992 static struct pcmcia_device_id tc589_ids[] = {
993 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
994 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
995 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
996 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
997 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
998 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
999 PCMCIA_DEVICE_NULL,
1000 };
1001 MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
1002
1003 static struct pcmcia_driver tc589_driver = {
1004 .owner = THIS_MODULE,
1005 .drv = {
1006 .name = "3c589_cs",
1007 },
1008 .probe = tc589_attach,
1009 .remove = tc589_detach,
1010 .id_table = tc589_ids,
1011 .suspend = tc589_suspend,
1012 .resume = tc589_resume,
1013 };
1014
1015 static int __init init_tc589(void)
1016 {
1017 return pcmcia_register_driver(&tc589_driver);
1018 }
1019
1020 static void __exit exit_tc589(void)
1021 {
1022 pcmcia_unregister_driver(&tc589_driver);
1023 }
1024
1025 module_init(init_tc589);
1026 module_exit(exit_tc589);
AMDTP streaming driver for the Linux FireWire stack (Juju)