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[PATCH] pcmcia: remove references to pcmcia/version.h
[deliverable/linux.git] / drivers / net / pcmcia / 3c589_cs.c
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
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>
49
50 #include <asm/uaccess.h>
51 #include <asm/io.h>
52 #include <asm/system.h>
53
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. */
58 #define EL3_DATA 0x00
59 #define EL3_TIMER 0x0a
60 #define EL3_CMD 0x0e
61 #define EL3_STATUS 0x0e
62
63 #define EEPROM_READ 0x0080
64 #define EEPROM_BUSY 0x8000
65
66 #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
67
68 /* The top five bits written to EL3_CMD are a command, the lower
69 11 bits are the parameter, if applicable. */
70 enum c509cmd {
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,
78 };
79
80 enum c509status {
81 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
82 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
83 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000
84 };
85
86 /* The SetRxFilter command accepts the following classes: */
87 enum RxFilter {
88 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
89 };
90
91 /* Register window 1 offsets, the window used in normal operation. */
92 #define TX_FIFO 0x00
93 #define RX_FIFO 0x00
94 #define RX_STATUS 0x08
95 #define TX_STATUS 0x0B
96 #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
97
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. */
102
103 /* Time in jiffies before concluding Tx hung */
104 #define TX_TIMEOUT ((400*HZ)/1000)
105
106 struct el3_private {
107 dev_link_t link;
108 dev_node_t node;
109 struct net_device_stats stats;
110 /* For transceiver monitoring */
111 struct timer_list media;
112 u16 media_status;
113 u16 fast_poll;
114 unsigned long last_irq;
115 spinlock_t lock;
116 };
117
118 static char *if_names[] = { "auto", "10baseT", "10base2", "AUI" };
119
120 /*====================================================================*/
121
122 /* Module parameters */
123
124 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
125 MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
126 MODULE_LICENSE("GPL");
127
128 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
129
130 /* Special hook for setting if_port when module is loaded */
131 INT_MODULE_PARM(if_port, 0);
132
133 #ifdef PCMCIA_DEBUG
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)";
138 #else
139 #define DEBUG(n, args...)
140 #endif
141
142 /*====================================================================*/
143
144 static void tc589_config(dev_link_t *link);
145 static void tc589_release(dev_link_t *link);
146 static int tc589_event(event_t event, int priority,
147 event_callback_args_t *args);
148
149 static u16 read_eeprom(kio_addr_t ioaddr, int index);
150 static void tc589_reset(struct net_device *dev);
151 static void media_check(unsigned long arg);
152 static int el3_config(struct net_device *dev, struct ifmap *map);
153 static int el3_open(struct net_device *dev);
154 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
155 static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs);
156 static void update_stats(struct net_device *dev);
157 static struct net_device_stats *el3_get_stats(struct net_device *dev);
158 static int el3_rx(struct net_device *dev);
159 static int el3_close(struct net_device *dev);
160 static void el3_tx_timeout(struct net_device *dev);
161 static void set_multicast_list(struct net_device *dev);
162 static struct ethtool_ops netdev_ethtool_ops;
163
164 static dev_info_t dev_info = "3c589_cs";
165
166 static dev_link_t *tc589_attach(void);
167 static void tc589_detach(dev_link_t *);
168
169 static dev_link_t *dev_list;
170
171 /*======================================================================
172
173 tc589_attach() creates an "instance" of the driver, allocating
174 local data structures for one device. The device is registered
175 with Card Services.
176
177 ======================================================================*/
178
179 static dev_link_t *tc589_attach(void)
180 {
181 struct el3_private *lp;
182 client_reg_t client_reg;
183 dev_link_t *link;
184 struct net_device *dev;
185 int ret;
186
187 DEBUG(0, "3c589_attach()\n");
188
189 /* Create new ethernet device */
190 dev = alloc_etherdev(sizeof(struct el3_private));
191 if (!dev)
192 return NULL;
193 lp = netdev_priv(dev);
194 link = &lp->link;
195 link->priv = dev;
196
197 spin_lock_init(&lp->lock);
198 link->io.NumPorts1 = 16;
199 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
200 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
201 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
202 link->irq.Handler = &el3_interrupt;
203 link->irq.Instance = dev;
204 link->conf.Attributes = CONF_ENABLE_IRQ;
205 link->conf.Vcc = 50;
206 link->conf.IntType = INT_MEMORY_AND_IO;
207 link->conf.ConfigIndex = 1;
208 link->conf.Present = PRESENT_OPTION;
209
210 /* The EL3-specific entries in the device structure. */
211 SET_MODULE_OWNER(dev);
212 dev->hard_start_xmit = &el3_start_xmit;
213 dev->set_config = &el3_config;
214 dev->get_stats = &el3_get_stats;
215 dev->set_multicast_list = &set_multicast_list;
216 dev->open = &el3_open;
217 dev->stop = &el3_close;
218 #ifdef HAVE_TX_TIMEOUT
219 dev->tx_timeout = el3_tx_timeout;
220 dev->watchdog_timeo = TX_TIMEOUT;
221 #endif
222 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
223
224 /* Register with Card Services */
225 link->next = dev_list;
226 dev_list = link;
227 client_reg.dev_info = &dev_info;
228 client_reg.Version = 0x0210;
229 client_reg.event_callback_args.client_data = link;
230 ret = pcmcia_register_client(&link->handle, &client_reg);
231 if (ret != 0) {
232 cs_error(link->handle, RegisterClient, ret);
233 tc589_detach(link);
234 return NULL;
235 }
236
237 return link;
238 } /* tc589_attach */
239
240 /*======================================================================
241
242 This deletes a driver "instance". The device is de-registered
243 with Card Services. If it has been released, all local data
244 structures are freed. Otherwise, the structures will be freed
245 when the device is released.
246
247 ======================================================================*/
248
249 static void tc589_detach(dev_link_t *link)
250 {
251 struct net_device *dev = link->priv;
252 dev_link_t **linkp;
253
254 DEBUG(0, "3c589_detach(0x%p)\n", link);
255
256 /* Locate device structure */
257 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
258 if (*linkp == link) break;
259 if (*linkp == NULL)
260 return;
261
262 if (link->dev)
263 unregister_netdev(dev);
264
265 if (link->state & DEV_CONFIG)
266 tc589_release(link);
267
268 if (link->handle)
269 pcmcia_deregister_client(link->handle);
270
271 /* Unlink device structure, free bits */
272 *linkp = link->next;
273 free_netdev(dev);
274 } /* tc589_detach */
275
276 /*======================================================================
277
278 tc589_config() is scheduled to run after a CARD_INSERTION event
279 is received, to configure the PCMCIA socket, and to make the
280 ethernet device available to the system.
281
282 ======================================================================*/
283
284 #define CS_CHECK(fn, ret) \
285 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
286
287 static void tc589_config(dev_link_t *link)
288 {
289 client_handle_t handle = link->handle;
290 struct net_device *dev = link->priv;
291 struct el3_private *lp = netdev_priv(dev);
292 tuple_t tuple;
293 cisparse_t parse;
294 u16 buf[32], *phys_addr;
295 int last_fn, last_ret, i, j, multi = 0, fifo;
296 kio_addr_t ioaddr;
297 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
298
299 DEBUG(0, "3c589_config(0x%p)\n", link);
300
301 phys_addr = (u16 *)dev->dev_addr;
302 tuple.Attributes = 0;
303 tuple.DesiredTuple = CISTPL_CONFIG;
304 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
305 tuple.TupleData = (cisdata_t *)buf;
306 tuple.TupleDataMax = sizeof(buf);
307 tuple.TupleOffset = 0;
308 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
309 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
310 link->conf.ConfigBase = parse.config.base;
311 link->conf.Present = parse.config.rmask[0];
312
313 /* Is this a 3c562? */
314 tuple.DesiredTuple = CISTPL_MANFID;
315 tuple.Attributes = TUPLE_RETURN_COMMON;
316 if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
317 (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS)) {
318 if (le16_to_cpu(buf[0]) != MANFID_3COM)
319 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
320 "3Com card??\n");
321 multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
322 }
323
324 /* Configure card */
325 link->state |= DEV_CONFIG;
326
327 /* For the 3c562, the base address must be xx00-xx7f */
328 link->io.IOAddrLines = 16;
329 for (i = j = 0; j < 0x400; j += 0x10) {
330 if (multi && (j & 0x80)) continue;
331 link->io.BasePort1 = j ^ 0x300;
332 i = pcmcia_request_io(link->handle, &link->io);
333 if (i == CS_SUCCESS) break;
334 }
335 if (i != CS_SUCCESS) {
336 cs_error(link->handle, RequestIO, i);
337 goto failed;
338 }
339 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
340 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
341
342 dev->irq = link->irq.AssignedIRQ;
343 dev->base_addr = link->io.BasePort1;
344 ioaddr = dev->base_addr;
345 EL3WINDOW(0);
346
347 /* The 3c589 has an extra EEPROM for configuration info, including
348 the hardware address. The 3c562 puts the address in the CIS. */
349 tuple.DesiredTuple = 0x88;
350 if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) {
351 pcmcia_get_tuple_data(handle, &tuple);
352 for (i = 0; i < 3; i++)
353 phys_addr[i] = htons(buf[i]);
354 } else {
355 for (i = 0; i < 3; i++)
356 phys_addr[i] = htons(read_eeprom(ioaddr, i));
357 if (phys_addr[0] == 0x6060) {
358 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
359 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
360 goto failed;
361 }
362 }
363
364 /* The address and resource configuration register aren't loaded from
365 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
366 outw(0x3f00, ioaddr + 8);
367 fifo = inl(ioaddr);
368
369 /* The if_port symbol can be set when the module is loaded */
370 if ((if_port >= 0) && (if_port <= 3))
371 dev->if_port = if_port;
372 else
373 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
374
375 link->dev = &lp->node;
376 link->state &= ~DEV_CONFIG_PENDING;
377 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
378
379 if (register_netdev(dev) != 0) {
380 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
381 link->dev = NULL;
382 goto failed;
383 }
384
385 strcpy(lp->node.dev_name, dev->name);
386
387 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
388 dev->name, (multi ? "562" : "589"), dev->base_addr,
389 dev->irq);
390 for (i = 0; i < 6; i++)
391 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
392 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
393 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
394 if_names[dev->if_port]);
395 return;
396
397 cs_failed:
398 cs_error(link->handle, last_fn, last_ret);
399 failed:
400 tc589_release(link);
401 return;
402
403 } /* tc589_config */
404
405 /*======================================================================
406
407 After a card is removed, tc589_release() will unregister the net
408 device, and release the PCMCIA configuration. If the device is
409 still open, this will be postponed until it is closed.
410
411 ======================================================================*/
412
413 static void tc589_release(dev_link_t *link)
414 {
415 DEBUG(0, "3c589_release(0x%p)\n", link);
416
417 pcmcia_release_configuration(link->handle);
418 pcmcia_release_io(link->handle, &link->io);
419 pcmcia_release_irq(link->handle, &link->irq);
420
421 link->state &= ~DEV_CONFIG;
422 }
423
424 /*======================================================================
425
426 The card status event handler. Mostly, this schedules other
427 stuff to run after an event is received. A CARD_REMOVAL event
428 also sets some flags to discourage the net drivers from trying
429 to talk to the card any more.
430
431 ======================================================================*/
432
433 static int tc589_event(event_t event, int priority,
434 event_callback_args_t *args)
435 {
436 dev_link_t *link = args->client_data;
437 struct net_device *dev = link->priv;
438
439 DEBUG(1, "3c589_event(0x%06x)\n", event);
440
441 switch (event) {
442 case CS_EVENT_CARD_REMOVAL:
443 link->state &= ~DEV_PRESENT;
444 if (link->state & DEV_CONFIG)
445 netif_device_detach(dev);
446 break;
447 case CS_EVENT_CARD_INSERTION:
448 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
449 tc589_config(link);
450 break;
451 case CS_EVENT_PM_SUSPEND:
452 link->state |= DEV_SUSPEND;
453 /* Fall through... */
454 case CS_EVENT_RESET_PHYSICAL:
455 if (link->state & DEV_CONFIG) {
456 if (link->open)
457 netif_device_detach(dev);
458 pcmcia_release_configuration(link->handle);
459 }
460 break;
461 case CS_EVENT_PM_RESUME:
462 link->state &= ~DEV_SUSPEND;
463 /* Fall through... */
464 case CS_EVENT_CARD_RESET:
465 if (link->state & DEV_CONFIG) {
466 pcmcia_request_configuration(link->handle, &link->conf);
467 if (link->open) {
468 tc589_reset(dev);
469 netif_device_attach(dev);
470 }
471 }
472 break;
473 }
474 return 0;
475 } /* tc589_event */
476
477 /*====================================================================*/
478
479 /*
480 Use this for commands that may take time to finish
481 */
482 static void tc589_wait_for_completion(struct net_device *dev, int cmd)
483 {
484 int i = 100;
485 outw(cmd, dev->base_addr + EL3_CMD);
486 while (--i > 0)
487 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
488 if (i == 0)
489 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
490 dev->name, cmd);
491 }
492
493 /*
494 Read a word from the EEPROM using the regular EEPROM access register.
495 Assume that we are in register window zero.
496 */
497 static u16 read_eeprom(kio_addr_t ioaddr, int index)
498 {
499 int i;
500 outw(EEPROM_READ + index, ioaddr + 10);
501 /* Reading the eeprom takes 162 us */
502 for (i = 1620; i >= 0; i--)
503 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
504 break;
505 return inw(ioaddr + 12);
506 }
507
508 /*
509 Set transceiver type, perhaps to something other than what the user
510 specified in dev->if_port.
511 */
512 static void tc589_set_xcvr(struct net_device *dev, int if_port)
513 {
514 struct el3_private *lp = netdev_priv(dev);
515 kio_addr_t ioaddr = dev->base_addr;
516
517 EL3WINDOW(0);
518 switch (if_port) {
519 case 0: case 1: outw(0, ioaddr + 6); break;
520 case 2: outw(3<<14, ioaddr + 6); break;
521 case 3: outw(1<<14, ioaddr + 6); break;
522 }
523 /* On PCMCIA, this just turns on the LED */
524 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
525 /* 10baseT interface, enable link beat and jabber check. */
526 EL3WINDOW(4);
527 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
528 EL3WINDOW(1);
529 if (if_port == 2)
530 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
531 else
532 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
533 }
534
535 static void dump_status(struct net_device *dev)
536 {
537 kio_addr_t ioaddr = dev->base_addr;
538 EL3WINDOW(1);
539 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
540 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
541 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
542 inw(ioaddr+TX_FREE));
543 EL3WINDOW(4);
544 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
545 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
546 inw(ioaddr+0x08), inw(ioaddr+0x0a));
547 EL3WINDOW(1);
548 }
549
550 /* Reset and restore all of the 3c589 registers. */
551 static void tc589_reset(struct net_device *dev)
552 {
553 kio_addr_t ioaddr = dev->base_addr;
554 int i;
555
556 EL3WINDOW(0);
557 outw(0x0001, ioaddr + 4); /* Activate board. */
558 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
559
560 /* Set the station address in window 2. */
561 EL3WINDOW(2);
562 for (i = 0; i < 6; i++)
563 outb(dev->dev_addr[i], ioaddr + i);
564
565 tc589_set_xcvr(dev, dev->if_port);
566
567 /* Switch to the stats window, and clear all stats by reading. */
568 outw(StatsDisable, ioaddr + EL3_CMD);
569 EL3WINDOW(6);
570 for (i = 0; i < 9; i++)
571 inb(ioaddr+i);
572 inw(ioaddr + 10);
573 inw(ioaddr + 12);
574
575 /* Switch to register set 1 for normal use. */
576 EL3WINDOW(1);
577
578 /* Accept b-cast and phys addr only. */
579 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
580 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
581 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
582 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
583 /* Allow status bits to be seen. */
584 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
585 /* Ack all pending events, and set active indicator mask. */
586 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
587 ioaddr + EL3_CMD);
588 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
589 | AdapterFailure, ioaddr + EL3_CMD);
590 }
591
592 static void netdev_get_drvinfo(struct net_device *dev,
593 struct ethtool_drvinfo *info)
594 {
595 strcpy(info->driver, DRV_NAME);
596 strcpy(info->version, DRV_VERSION);
597 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
598 }
599
600 #ifdef PCMCIA_DEBUG
601 static u32 netdev_get_msglevel(struct net_device *dev)
602 {
603 return pc_debug;
604 }
605
606 static void netdev_set_msglevel(struct net_device *dev, u32 level)
607 {
608 pc_debug = level;
609 }
610 #endif /* PCMCIA_DEBUG */
611
612 static struct ethtool_ops netdev_ethtool_ops = {
613 .get_drvinfo = netdev_get_drvinfo,
614 #ifdef PCMCIA_DEBUG
615 .get_msglevel = netdev_get_msglevel,
616 .set_msglevel = netdev_set_msglevel,
617 #endif /* PCMCIA_DEBUG */
618 };
619
620 static int el3_config(struct net_device *dev, struct ifmap *map)
621 {
622 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
623 if (map->port <= 3) {
624 dev->if_port = map->port;
625 printk(KERN_INFO "%s: switched to %s port\n",
626 dev->name, if_names[dev->if_port]);
627 tc589_set_xcvr(dev, dev->if_port);
628 } else
629 return -EINVAL;
630 }
631 return 0;
632 }
633
634 static int el3_open(struct net_device *dev)
635 {
636 struct el3_private *lp = netdev_priv(dev);
637 dev_link_t *link = &lp->link;
638
639 if (!DEV_OK(link))
640 return -ENODEV;
641
642 link->open++;
643 netif_start_queue(dev);
644
645 tc589_reset(dev);
646 init_timer(&lp->media);
647 lp->media.function = &media_check;
648 lp->media.data = (unsigned long) dev;
649 lp->media.expires = jiffies + HZ;
650 add_timer(&lp->media);
651
652 DEBUG(1, "%s: opened, status %4.4x.\n",
653 dev->name, inw(dev->base_addr + EL3_STATUS));
654
655 return 0;
656 }
657
658 static void el3_tx_timeout(struct net_device *dev)
659 {
660 struct el3_private *lp = netdev_priv(dev);
661 kio_addr_t ioaddr = dev->base_addr;
662
663 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
664 dump_status(dev);
665 lp->stats.tx_errors++;
666 dev->trans_start = jiffies;
667 /* Issue TX_RESET and TX_START commands. */
668 tc589_wait_for_completion(dev, TxReset);
669 outw(TxEnable, ioaddr + EL3_CMD);
670 netif_wake_queue(dev);
671 }
672
673 static void pop_tx_status(struct net_device *dev)
674 {
675 struct el3_private *lp = netdev_priv(dev);
676 kio_addr_t ioaddr = dev->base_addr;
677 int i;
678
679 /* Clear the Tx status stack. */
680 for (i = 32; i > 0; i--) {
681 u_char tx_status = inb(ioaddr + TX_STATUS);
682 if (!(tx_status & 0x84)) break;
683 /* reset transmitter on jabber error or underrun */
684 if (tx_status & 0x30)
685 tc589_wait_for_completion(dev, TxReset);
686 if (tx_status & 0x38) {
687 DEBUG(1, "%s: transmit error: status 0x%02x\n",
688 dev->name, tx_status);
689 outw(TxEnable, ioaddr + EL3_CMD);
690 lp->stats.tx_aborted_errors++;
691 }
692 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
693 }
694 }
695
696 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
697 {
698 kio_addr_t ioaddr = dev->base_addr;
699 struct el3_private *priv = netdev_priv(dev);
700
701 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
702 "status %4.4x.\n", dev->name, (long)skb->len,
703 inw(ioaddr + EL3_STATUS));
704
705 priv->stats.tx_bytes += skb->len;
706
707 /* Put out the doubleword header... */
708 outw(skb->len, ioaddr + TX_FIFO);
709 outw(0x00, ioaddr + TX_FIFO);
710 /* ... and the packet rounded to a doubleword. */
711 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
712
713 dev->trans_start = jiffies;
714 if (inw(ioaddr + TX_FREE) <= 1536) {
715 netif_stop_queue(dev);
716 /* Interrupt us when the FIFO has room for max-sized packet. */
717 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
718 }
719
720 dev_kfree_skb(skb);
721 pop_tx_status(dev);
722
723 return 0;
724 }
725
726 /* The EL3 interrupt handler. */
727 static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
728 {
729 struct net_device *dev = (struct net_device *) dev_id;
730 struct el3_private *lp = netdev_priv(dev);
731 kio_addr_t ioaddr;
732 __u16 status;
733 int i = 0, handled = 1;
734
735 if (!netif_device_present(dev))
736 return IRQ_NONE;
737
738 ioaddr = dev->base_addr;
739
740 DEBUG(3, "%s: interrupt, status %4.4x.\n",
741 dev->name, inw(ioaddr + EL3_STATUS));
742
743 spin_lock(&lp->lock);
744 while ((status = inw(ioaddr + EL3_STATUS)) &
745 (IntLatch | RxComplete | StatsFull)) {
746 if ((status & 0xe000) != 0x2000) {
747 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
748 handled = 0;
749 break;
750 }
751
752 if (status & RxComplete)
753 el3_rx(dev);
754
755 if (status & TxAvailable) {
756 DEBUG(3, " TX room bit was handled.\n");
757 /* There's room in the FIFO for a full-sized packet. */
758 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
759 netif_wake_queue(dev);
760 }
761
762 if (status & TxComplete)
763 pop_tx_status(dev);
764
765 if (status & (AdapterFailure | RxEarly | StatsFull)) {
766 /* Handle all uncommon interrupts. */
767 if (status & StatsFull) /* Empty statistics. */
768 update_stats(dev);
769 if (status & RxEarly) { /* Rx early is unused. */
770 el3_rx(dev);
771 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
772 }
773 if (status & AdapterFailure) {
774 u16 fifo_diag;
775 EL3WINDOW(4);
776 fifo_diag = inw(ioaddr + 4);
777 EL3WINDOW(1);
778 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
779 " register %04x.\n", dev->name, fifo_diag);
780 if (fifo_diag & 0x0400) {
781 /* Tx overrun */
782 tc589_wait_for_completion(dev, TxReset);
783 outw(TxEnable, ioaddr + EL3_CMD);
784 }
785 if (fifo_diag & 0x2000) {
786 /* Rx underrun */
787 tc589_wait_for_completion(dev, RxReset);
788 set_multicast_list(dev);
789 outw(RxEnable, ioaddr + EL3_CMD);
790 }
791 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
792 }
793 }
794
795 if (++i > 10) {
796 printk(KERN_ERR "%s: infinite loop in interrupt, "
797 "status %4.4x.\n", dev->name, status);
798 /* Clear all interrupts */
799 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
800 break;
801 }
802 /* Acknowledge the IRQ. */
803 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
804 }
805
806 lp->last_irq = jiffies;
807 spin_unlock(&lp->lock);
808 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
809 dev->name, inw(ioaddr + EL3_STATUS));
810 return IRQ_RETVAL(handled);
811 }
812
813 static void media_check(unsigned long arg)
814 {
815 struct net_device *dev = (struct net_device *)(arg);
816 struct el3_private *lp = netdev_priv(dev);
817 kio_addr_t ioaddr = dev->base_addr;
818 u16 media, errs;
819 unsigned long flags;
820
821 if (!netif_device_present(dev)) goto reschedule;
822
823 EL3WINDOW(1);
824 /* Check for pending interrupt with expired latency timer: with
825 this, we can limp along even if the interrupt is blocked */
826 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
827 (inb(ioaddr + EL3_TIMER) == 0xff)) {
828 if (!lp->fast_poll)
829 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
830 el3_interrupt(dev->irq, lp, NULL);
831 lp->fast_poll = HZ;
832 }
833 if (lp->fast_poll) {
834 lp->fast_poll--;
835 lp->media.expires = jiffies + HZ/100;
836 add_timer(&lp->media);
837 return;
838 }
839
840 /* lp->lock guards the EL3 window. Window should always be 1 except
841 when the lock is held */
842 spin_lock_irqsave(&lp->lock, flags);
843 EL3WINDOW(4);
844 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
845
846 /* Ignore collisions unless we've had no irq's recently */
847 if (jiffies - lp->last_irq < HZ) {
848 media &= ~0x0010;
849 } else {
850 /* Try harder to detect carrier errors */
851 EL3WINDOW(6);
852 outw(StatsDisable, ioaddr + EL3_CMD);
853 errs = inb(ioaddr + 0);
854 outw(StatsEnable, ioaddr + EL3_CMD);
855 lp->stats.tx_carrier_errors += errs;
856 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
857 }
858
859 if (media != lp->media_status) {
860 if ((media & lp->media_status & 0x8000) &&
861 ((lp->media_status ^ media) & 0x0800))
862 printk(KERN_INFO "%s: %s link beat\n", dev->name,
863 (lp->media_status & 0x0800 ? "lost" : "found"));
864 else if ((media & lp->media_status & 0x4000) &&
865 ((lp->media_status ^ media) & 0x0010))
866 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
867 (lp->media_status & 0x0010 ? "ok" : "problem"));
868 if (dev->if_port == 0) {
869 if (media & 0x8000) {
870 if (media & 0x0800)
871 printk(KERN_INFO "%s: flipped to 10baseT\n",
872 dev->name);
873 else
874 tc589_set_xcvr(dev, 2);
875 } else if (media & 0x4000) {
876 if (media & 0x0010)
877 tc589_set_xcvr(dev, 1);
878 else
879 printk(KERN_INFO "%s: flipped to 10base2\n",
880 dev->name);
881 }
882 }
883 lp->media_status = media;
884 }
885
886 EL3WINDOW(1);
887 spin_unlock_irqrestore(&lp->lock, flags);
888
889 reschedule:
890 lp->media.expires = jiffies + HZ;
891 add_timer(&lp->media);
892 }
893
894 static struct net_device_stats *el3_get_stats(struct net_device *dev)
895 {
896 struct el3_private *lp = netdev_priv(dev);
897 unsigned long flags;
898 dev_link_t *link = &lp->link;
899
900 if (DEV_OK(link)) {
901 spin_lock_irqsave(&lp->lock, flags);
902 update_stats(dev);
903 spin_unlock_irqrestore(&lp->lock, flags);
904 }
905 return &lp->stats;
906 }
907
908 /*
909 Update statistics. We change to register window 6, so this should be run
910 single-threaded if the device is active. This is expected to be a rare
911 operation, and it's simpler for the rest of the driver to assume that
912 window 1 is always valid rather than use a special window-state variable.
913
914 Caller must hold the lock for this
915 */
916 static void update_stats(struct net_device *dev)
917 {
918 struct el3_private *lp = netdev_priv(dev);
919 kio_addr_t ioaddr = dev->base_addr;
920
921 DEBUG(2, "%s: updating the statistics.\n", dev->name);
922 /* Turn off statistics updates while reading. */
923 outw(StatsDisable, ioaddr + EL3_CMD);
924 /* Switch to the stats window, and read everything. */
925 EL3WINDOW(6);
926 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
927 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
928 /* Multiple collisions. */ inb(ioaddr + 2);
929 lp->stats.collisions += inb(ioaddr + 3);
930 lp->stats.tx_window_errors += inb(ioaddr + 4);
931 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
932 lp->stats.tx_packets += inb(ioaddr + 6);
933 /* Rx packets */ inb(ioaddr + 7);
934 /* Tx deferrals */ inb(ioaddr + 8);
935 /* Rx octets */ inw(ioaddr + 10);
936 /* Tx octets */ inw(ioaddr + 12);
937
938 /* Back to window 1, and turn statistics back on. */
939 EL3WINDOW(1);
940 outw(StatsEnable, ioaddr + EL3_CMD);
941 }
942
943 static int el3_rx(struct net_device *dev)
944 {
945 struct el3_private *lp = netdev_priv(dev);
946 kio_addr_t ioaddr = dev->base_addr;
947 int worklimit = 32;
948 short rx_status;
949
950 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
951 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
952 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
953 (--worklimit >= 0)) {
954 if (rx_status & 0x4000) { /* Error, update stats. */
955 short error = rx_status & 0x3800;
956 lp->stats.rx_errors++;
957 switch (error) {
958 case 0x0000: lp->stats.rx_over_errors++; break;
959 case 0x0800: lp->stats.rx_length_errors++; break;
960 case 0x1000: lp->stats.rx_frame_errors++; break;
961 case 0x1800: lp->stats.rx_length_errors++; break;
962 case 0x2000: lp->stats.rx_frame_errors++; break;
963 case 0x2800: lp->stats.rx_crc_errors++; break;
964 }
965 } else {
966 short pkt_len = rx_status & 0x7ff;
967 struct sk_buff *skb;
968
969 skb = dev_alloc_skb(pkt_len+5);
970
971 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
972 pkt_len, rx_status);
973 if (skb != NULL) {
974 skb->dev = dev;
975 skb_reserve(skb, 2);
976 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
977 (pkt_len+3)>>2);
978 skb->protocol = eth_type_trans(skb, dev);
979 netif_rx(skb);
980 dev->last_rx = jiffies;
981 lp->stats.rx_packets++;
982 lp->stats.rx_bytes += pkt_len;
983 } else {
984 DEBUG(1, "%s: couldn't allocate a sk_buff of"
985 " size %d.\n", dev->name, pkt_len);
986 lp->stats.rx_dropped++;
987 }
988 }
989 /* Pop the top of the Rx FIFO */
990 tc589_wait_for_completion(dev, RxDiscard);
991 }
992 if (worklimit == 0)
993 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
994 return 0;
995 }
996
997 static void set_multicast_list(struct net_device *dev)
998 {
999 struct el3_private *lp = netdev_priv(dev);
1000 dev_link_t *link = &lp->link;
1001 kio_addr_t ioaddr = dev->base_addr;
1002 u16 opts = SetRxFilter | RxStation | RxBroadcast;
1003
1004 if (!(DEV_OK(link))) return;
1005 if (dev->flags & IFF_PROMISC)
1006 opts |= RxMulticast | RxProm;
1007 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
1008 opts |= RxMulticast;
1009 outw(opts, ioaddr + EL3_CMD);
1010 }
1011
1012 static int el3_close(struct net_device *dev)
1013 {
1014 struct el3_private *lp = netdev_priv(dev);
1015 dev_link_t *link = &lp->link;
1016 kio_addr_t ioaddr = dev->base_addr;
1017
1018 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
1019
1020 if (DEV_OK(link)) {
1021 /* Turn off statistics ASAP. We update lp->stats below. */
1022 outw(StatsDisable, ioaddr + EL3_CMD);
1023
1024 /* Disable the receiver and transmitter. */
1025 outw(RxDisable, ioaddr + EL3_CMD);
1026 outw(TxDisable, ioaddr + EL3_CMD);
1027
1028 if (dev->if_port == 2)
1029 /* Turn off thinnet power. Green! */
1030 outw(StopCoax, ioaddr + EL3_CMD);
1031 else if (dev->if_port == 1) {
1032 /* Disable link beat and jabber */
1033 EL3WINDOW(4);
1034 outw(0, ioaddr + WN4_MEDIA);
1035 }
1036
1037 /* Switching back to window 0 disables the IRQ. */
1038 EL3WINDOW(0);
1039 /* But we explicitly zero the IRQ line select anyway. */
1040 outw(0x0f00, ioaddr + WN0_IRQ);
1041
1042 /* Check if the card still exists */
1043 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
1044 update_stats(dev);
1045 }
1046
1047 link->open--;
1048 netif_stop_queue(dev);
1049 del_timer_sync(&lp->media);
1050
1051 return 0;
1052 }
1053
1054 static struct pcmcia_device_id tc589_ids[] = {
1055 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
1056 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
1057 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
1058 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
1059 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
1060 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
1061 PCMCIA_DEVICE_NULL,
1062 };
1063 MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
1064
1065 static struct pcmcia_driver tc589_driver = {
1066 .owner = THIS_MODULE,
1067 .drv = {
1068 .name = "3c589_cs",
1069 },
1070 .attach = tc589_attach,
1071 .event = tc589_event,
1072 .detach = tc589_detach,
1073 .id_table = tc589_ids,
1074 };
1075
1076 static int __init init_tc589(void)
1077 {
1078 return pcmcia_register_driver(&tc589_driver);
1079 }
1080
1081 static void __exit exit_tc589(void)
1082 {
1083 pcmcia_unregister_driver(&tc589_driver);
1084 BUG_ON(dev_list != NULL);
1085 }
1086
1087 module_init(init_tc589);
1088 module_exit(exit_tc589);
Linux kernel - Deliverables
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