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[PATCH] pcmcia: remove old detach mechanism
[deliverable/linux.git] / drivers / net / pcmcia / 3c589_cs.c
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1da177e4
LT		 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
1da177e4
LT		 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. */
70enum 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
80enum 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: */
87enum 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
106struct 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
118static char *if_names[] = { "auto", "10baseT", "10base2", "AUI" };
119
120/*====================================================================*/
121
122/* Module parameters */
123
124MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
125MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
126MODULE_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 */
131INT_MODULE_PARM(if_port, 0);
132
133#ifdef PCMCIA_DEBUG
134INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
135#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
136static char *version =
137DRV_NAME ".c " DRV_VERSION " 2001/10/13 00:08:50 (David Hinds)";
138#else
139#define DEBUG(n, args...)
140#endif
141
142/*====================================================================*/
143
144static void tc589_config(dev_link_t *link);
145static void tc589_release(dev_link_t *link);
146static int tc589_event(event_t event, int priority,
147 event_callback_args_t *args);
148
149static u16 read_eeprom(kio_addr_t ioaddr, int index);
150static void tc589_reset(struct net_device *dev);
151static void media_check(unsigned long arg);
152static int el3_config(struct net_device *dev, struct ifmap *map);
153static int el3_open(struct net_device *dev);
154static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
155static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs);
156static void update_stats(struct net_device *dev);
157static struct net_device_stats *el3_get_stats(struct net_device *dev);
158static int el3_rx(struct net_device *dev);
159static int el3_close(struct net_device *dev);
160static void el3_tx_timeout(struct net_device *dev);
161static void set_multicast_list(struct net_device *dev);
162static struct ethtool_ops netdev_ethtool_ops;
163
164static dev_info_t dev_info = "3c589_cs";
165
166static dev_link_t *tc589_attach(void);
cc3b4866 167static void tc589_detach(struct pcmcia_device *p_dev);
1da177e4
LT		 168
169static 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
179static 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;
1da177e4
LT		 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);
cc3b4866 233 tc589_detach(link->handle);
1da177e4
LT		 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
cc3b4866 249static void tc589_detach(struct pcmcia_device *p_dev)
1da177e4 250{
cc3b4866 251 dev_link_t *link = dev_to_instance(p_dev);
1da177e4
LT		 252 struct net_device *dev = link->priv;
253 dev_link_t **linkp;
254
255 DEBUG(0, "3c589_detach(0x%p)\n", link);
256
257 /* Locate device structure */
258 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
259 if (*linkp == link) break;
260 if (*linkp == NULL)
261 return;
262
263 if (link->dev)
264 unregister_netdev(dev);
265
266 if (link->state & DEV_CONFIG)
267 tc589_release(link);
cc3b4866 268
1da177e4
LT		 269 /* Unlink device structure, free bits */
270 *linkp = link->next;
271 free_netdev(dev);
272} /* tc589_detach */
273
274/*======================================================================
275
276 tc589_config() is scheduled to run after a CARD_INSERTION event
277 is received, to configure the PCMCIA socket, and to make the
278 ethernet device available to the system.
279
280======================================================================*/
281
282#define CS_CHECK(fn, ret) \
283do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
284
285static void tc589_config(dev_link_t *link)
286{
287 client_handle_t handle = link->handle;
288 struct net_device *dev = link->priv;
289 struct el3_private *lp = netdev_priv(dev);
290 tuple_t tuple;
291 cisparse_t parse;
292 u16 buf[32], *phys_addr;
293 int last_fn, last_ret, i, j, multi = 0, fifo;
294 kio_addr_t ioaddr;
295 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
296
297 DEBUG(0, "3c589_config(0x%p)\n", link);
298
299 phys_addr = (u16 *)dev->dev_addr;
300 tuple.Attributes = 0;
301 tuple.DesiredTuple = CISTPL_CONFIG;
302 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
303 tuple.TupleData = (cisdata_t *)buf;
304 tuple.TupleDataMax = sizeof(buf);
305 tuple.TupleOffset = 0;
306 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
307 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
308 link->conf.ConfigBase = parse.config.base;
309 link->conf.Present = parse.config.rmask[0];
310
311 /* Is this a 3c562? */
312 tuple.DesiredTuple = CISTPL_MANFID;
313 tuple.Attributes = TUPLE_RETURN_COMMON;
314 if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
315 (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS)) {
316 if (le16_to_cpu(buf[0]) != MANFID_3COM)
317 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
318 "3Com card??\n");
319 multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
320 }
321
322 /* Configure card */
323 link->state |= DEV_CONFIG;
324
325 /* For the 3c562, the base address must be xx00-xx7f */
326 link->io.IOAddrLines = 16;
327 for (i = j = 0; j < 0x400; j += 0x10) {
328 if (multi && (j & 0x80)) continue;
329 link->io.BasePort1 = j ^ 0x300;
330 i = pcmcia_request_io(link->handle, &link->io);
331 if (i == CS_SUCCESS) break;
332 }
333 if (i != CS_SUCCESS) {
334 cs_error(link->handle, RequestIO, i);
335 goto failed;
336 }
337 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
338 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
339
340 dev->irq = link->irq.AssignedIRQ;
341 dev->base_addr = link->io.BasePort1;
342 ioaddr = dev->base_addr;
343 EL3WINDOW(0);
344
345 /* The 3c589 has an extra EEPROM for configuration info, including
346 the hardware address. The 3c562 puts the address in the CIS. */
347 tuple.DesiredTuple = 0x88;
348 if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) {
349 pcmcia_get_tuple_data(handle, &tuple);
350 for (i = 0; i < 3; i++)
351 phys_addr[i] = htons(buf[i]);
352 } else {
353 for (i = 0; i < 3; i++)
354 phys_addr[i] = htons(read_eeprom(ioaddr, i));
355 if (phys_addr[0] == 0x6060) {
356 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
357 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
358 goto failed;
359 }
360 }
361
362 /* The address and resource configuration register aren't loaded from
363 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
364 outw(0x3f00, ioaddr + 8);
365 fifo = inl(ioaddr);
366
367 /* The if_port symbol can be set when the module is loaded */
368 if ((if_port >= 0) && (if_port <= 3))
369 dev->if_port = if_port;
370 else
371 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
372
373 link->dev = &lp->node;
374 link->state &= ~DEV_CONFIG_PENDING;
375 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
376
377 if (register_netdev(dev) != 0) {
378 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
379 link->dev = NULL;
380 goto failed;
381 }
382
383 strcpy(lp->node.dev_name, dev->name);
384
385 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
386 dev->name, (multi ? "562" : "589"), dev->base_addr,
387 dev->irq);
388 for (i = 0; i < 6; i++)
389 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
390 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
391 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
392 if_names[dev->if_port]);
393 return;
394
395cs_failed:
396 cs_error(link->handle, last_fn, last_ret);
397failed:
398 tc589_release(link);
399 return;
400
401} /* tc589_config */
402
403/*======================================================================
404
405 After a card is removed, tc589_release() will unregister the net
406 device, and release the PCMCIA configuration. If the device is
407 still open, this will be postponed until it is closed.
408
409======================================================================*/
410
411static void tc589_release(dev_link_t *link)
412{
413 DEBUG(0, "3c589_release(0x%p)\n", link);
414
415 pcmcia_release_configuration(link->handle);
416 pcmcia_release_io(link->handle, &link->io);
417 pcmcia_release_irq(link->handle, &link->irq);
418
419 link->state &= ~DEV_CONFIG;
420}
421
98e4c28b
DB		 422static int tc589_suspend(struct pcmcia_device *p_dev)
423{
424 dev_link_t *link = dev_to_instance(p_dev);
425 struct net_device *dev = link->priv;
426
427 link->state |= DEV_SUSPEND;
428 if (link->state & DEV_CONFIG) {
429 if (link->open)
430 netif_device_detach(dev);
431 pcmcia_release_configuration(link->handle);
432 }
433
434 return 0;
435}
436
437static int tc589_resume(struct pcmcia_device *p_dev)
438{
439 dev_link_t *link = dev_to_instance(p_dev);
440 struct net_device *dev = link->priv;
441
442 link->state &= ~DEV_SUSPEND;
443 if (link->state & DEV_CONFIG) {
444 pcmcia_request_configuration(link->handle, &link->conf);
445 if (link->open) {
446 tc589_reset(dev);
447 netif_device_attach(dev);
448 }
449 }
450
451 return 0;
452}
453
1da177e4
LT		 454/*======================================================================
455
456 The card status event handler. Mostly, this schedules other
457 stuff to run after an event is received. A CARD_REMOVAL event
458 also sets some flags to discourage the net drivers from trying
459 to talk to the card any more.
460
461======================================================================*/
462
463static int tc589_event(event_t event, int priority,
464 event_callback_args_t *args)
465{
466 dev_link_t *link = args->client_data;
1da177e4
LT		 467
468 DEBUG(1, "3c589_event(0x%06x)\n", event);
469
470 switch (event) {
1da177e4
LT		 471 case CS_EVENT_CARD_INSERTION:
472 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
473 tc589_config(link);
474 break;
1da177e4
LT		 475 }
476 return 0;
477} /* tc589_event */
478
479/*====================================================================*/
480
481/*
482 Use this for commands that may take time to finish
483*/
484static void tc589_wait_for_completion(struct net_device *dev, int cmd)
485{
486 int i = 100;
487 outw(cmd, dev->base_addr + EL3_CMD);
488 while (--i > 0)
489 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
490 if (i == 0)
491 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
492 dev->name, cmd);
493}
494
495/*
496 Read a word from the EEPROM using the regular EEPROM access register.
497 Assume that we are in register window zero.
498*/
499static u16 read_eeprom(kio_addr_t ioaddr, int index)
500{
501 int i;
502 outw(EEPROM_READ + index, ioaddr + 10);
503 /* Reading the eeprom takes 162 us */
504 for (i = 1620; i >= 0; i--)
505 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
506 break;
507 return inw(ioaddr + 12);
508}
509
510/*
511 Set transceiver type, perhaps to something other than what the user
512 specified in dev->if_port.
513*/
514static void tc589_set_xcvr(struct net_device *dev, int if_port)
515{
516 struct el3_private *lp = netdev_priv(dev);
517 kio_addr_t ioaddr = dev->base_addr;
518
519 EL3WINDOW(0);
520 switch (if_port) {
521 case 0: case 1: outw(0, ioaddr + 6); break;
522 case 2: outw(3<<14, ioaddr + 6); break;
523 case 3: outw(1<<14, ioaddr + 6); break;
524 }
525 /* On PCMCIA, this just turns on the LED */
526 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
527 /* 10baseT interface, enable link beat and jabber check. */
528 EL3WINDOW(4);
529 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
530 EL3WINDOW(1);
531 if (if_port == 2)
532 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
533 else
534 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
535}
536
537static void dump_status(struct net_device *dev)
538{
539 kio_addr_t ioaddr = dev->base_addr;
540 EL3WINDOW(1);
541 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
542 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
543 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
544 inw(ioaddr+TX_FREE));
545 EL3WINDOW(4);
546 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
547 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
548 inw(ioaddr+0x08), inw(ioaddr+0x0a));
549 EL3WINDOW(1);
550}
551
552/* Reset and restore all of the 3c589 registers. */
553static void tc589_reset(struct net_device *dev)
554{
555 kio_addr_t ioaddr = dev->base_addr;
556 int i;
557
558 EL3WINDOW(0);
559 outw(0x0001, ioaddr + 4); /* Activate board. */
560 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
561
562 /* Set the station address in window 2. */
563 EL3WINDOW(2);
564 for (i = 0; i < 6; i++)
565 outb(dev->dev_addr[i], ioaddr + i);
566
567 tc589_set_xcvr(dev, dev->if_port);
568
569 /* Switch to the stats window, and clear all stats by reading. */
570 outw(StatsDisable, ioaddr + EL3_CMD);
571 EL3WINDOW(6);
572 for (i = 0; i < 9; i++)
573 inb(ioaddr+i);
574 inw(ioaddr + 10);
575 inw(ioaddr + 12);
576
577 /* Switch to register set 1 for normal use. */
578 EL3WINDOW(1);
579
580 /* Accept b-cast and phys addr only. */
581 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
582 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
583 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
584 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
585 /* Allow status bits to be seen. */
586 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
587 /* Ack all pending events, and set active indicator mask. */
588 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
589 ioaddr + EL3_CMD);
590 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
591 | AdapterFailure, ioaddr + EL3_CMD);
592}
593
594static void netdev_get_drvinfo(struct net_device *dev,
595 struct ethtool_drvinfo *info)
596{
597 strcpy(info->driver, DRV_NAME);
598 strcpy(info->version, DRV_VERSION);
599 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
600}
601
602#ifdef PCMCIA_DEBUG
603static u32 netdev_get_msglevel(struct net_device *dev)
604{
605 return pc_debug;
606}
607
608static void netdev_set_msglevel(struct net_device *dev, u32 level)
609{
610 pc_debug = level;
611}
612#endif /* PCMCIA_DEBUG */
613
614static struct ethtool_ops netdev_ethtool_ops = {
615 .get_drvinfo = netdev_get_drvinfo,
616#ifdef PCMCIA_DEBUG
617 .get_msglevel = netdev_get_msglevel,
618 .set_msglevel = netdev_set_msglevel,
619#endif /* PCMCIA_DEBUG */
620};
621
622static int el3_config(struct net_device *dev, struct ifmap *map)
623{
624 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
625 if (map->port <= 3) {
626 dev->if_port = map->port;
627 printk(KERN_INFO "%s: switched to %s port\n",
628 dev->name, if_names[dev->if_port]);
629 tc589_set_xcvr(dev, dev->if_port);
630 } else
631 return -EINVAL;
632 }
633 return 0;
634}
635
636static int el3_open(struct net_device *dev)
637{
638 struct el3_private *lp = netdev_priv(dev);
639 dev_link_t *link = &lp->link;
640
641 if (!DEV_OK(link))
642 return -ENODEV;
643
644 link->open++;
645 netif_start_queue(dev);
646
647 tc589_reset(dev);
648 init_timer(&lp->media);
649 lp->media.function = &media_check;
650 lp->media.data = (unsigned long) dev;
651 lp->media.expires = jiffies + HZ;
652 add_timer(&lp->media);
653
654 DEBUG(1, "%s: opened, status %4.4x.\n",
655 dev->name, inw(dev->base_addr + EL3_STATUS));
656
657 return 0;
658}
659
660static void el3_tx_timeout(struct net_device *dev)
661{
662 struct el3_private *lp = netdev_priv(dev);
663 kio_addr_t ioaddr = dev->base_addr;
664
665 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
666 dump_status(dev);
667 lp->stats.tx_errors++;
668 dev->trans_start = jiffies;
669 /* Issue TX_RESET and TX_START commands. */
670 tc589_wait_for_completion(dev, TxReset);
671 outw(TxEnable, ioaddr + EL3_CMD);
672 netif_wake_queue(dev);
673}
674
675static void pop_tx_status(struct net_device *dev)
676{
677 struct el3_private *lp = netdev_priv(dev);
678 kio_addr_t ioaddr = dev->base_addr;
679 int i;
680
681 /* Clear the Tx status stack. */
682 for (i = 32; i > 0; i--) {
683 u_char tx_status = inb(ioaddr + TX_STATUS);
684 if (!(tx_status & 0x84)) break;
685 /* reset transmitter on jabber error or underrun */
686 if (tx_status & 0x30)
687 tc589_wait_for_completion(dev, TxReset);
688 if (tx_status & 0x38) {
689 DEBUG(1, "%s: transmit error: status 0x%02x\n",
690 dev->name, tx_status);
691 outw(TxEnable, ioaddr + EL3_CMD);
692 lp->stats.tx_aborted_errors++;
693 }
694 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
695 }
696}
697
698static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
699{
700 kio_addr_t ioaddr = dev->base_addr;
701 struct el3_private *priv = netdev_priv(dev);
702
703 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
704 "status %4.4x.\n", dev->name, (long)skb->len,
705 inw(ioaddr + EL3_STATUS));
706
707 priv->stats.tx_bytes += skb->len;
708
709 /* Put out the doubleword header... */
710 outw(skb->len, ioaddr + TX_FIFO);
711 outw(0x00, ioaddr + TX_FIFO);
712 /* ... and the packet rounded to a doubleword. */
713 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
714
715 dev->trans_start = jiffies;
716 if (inw(ioaddr + TX_FREE) <= 1536) {
717 netif_stop_queue(dev);
718 /* Interrupt us when the FIFO has room for max-sized packet. */
719 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
720 }
721
722 dev_kfree_skb(skb);
723 pop_tx_status(dev);
724
725 return 0;
726}
727
728/* The EL3 interrupt handler. */
729static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
730{
731 struct net_device *dev = (struct net_device *) dev_id;
732 struct el3_private *lp = netdev_priv(dev);
733 kio_addr_t ioaddr;
734 __u16 status;
735 int i = 0, handled = 1;
736
737 if (!netif_device_present(dev))
738 return IRQ_NONE;
739
740 ioaddr = dev->base_addr;
741
742 DEBUG(3, "%s: interrupt, status %4.4x.\n",
743 dev->name, inw(ioaddr + EL3_STATUS));
744
745 spin_lock(&lp->lock);
746 while ((status = inw(ioaddr + EL3_STATUS)) &
747 (IntLatch | RxComplete | StatsFull)) {
748 if ((status & 0xe000) != 0x2000) {
749 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
750 handled = 0;
751 break;
752 }
753
754 if (status & RxComplete)
755 el3_rx(dev);
756
757 if (status & TxAvailable) {
758 DEBUG(3, " TX room bit was handled.\n");
759 /* There's room in the FIFO for a full-sized packet. */
760 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
761 netif_wake_queue(dev);
762 }
763
764 if (status & TxComplete)
765 pop_tx_status(dev);
766
767 if (status & (AdapterFailure | RxEarly | StatsFull)) {
768 /* Handle all uncommon interrupts. */
769 if (status & StatsFull) /* Empty statistics. */
770 update_stats(dev);
771 if (status & RxEarly) { /* Rx early is unused. */
772 el3_rx(dev);
773 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
774 }
775 if (status & AdapterFailure) {
776 u16 fifo_diag;
777 EL3WINDOW(4);
778 fifo_diag = inw(ioaddr + 4);
779 EL3WINDOW(1);
780 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
781 " register %04x.\n", dev->name, fifo_diag);
782 if (fifo_diag & 0x0400) {
783 /* Tx overrun */
784 tc589_wait_for_completion(dev, TxReset);
785 outw(TxEnable, ioaddr + EL3_CMD);
786 }
787 if (fifo_diag & 0x2000) {
788 /* Rx underrun */
789 tc589_wait_for_completion(dev, RxReset);
790 set_multicast_list(dev);
791 outw(RxEnable, ioaddr + EL3_CMD);
792 }
793 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
794 }
795 }
796
797 if (++i > 10) {
798 printk(KERN_ERR "%s: infinite loop in interrupt, "
799 "status %4.4x.\n", dev->name, status);
800 /* Clear all interrupts */
801 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
802 break;
803 }
804 /* Acknowledge the IRQ. */
805 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
806 }
807
808 lp->last_irq = jiffies;
809 spin_unlock(&lp->lock);
810 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
811 dev->name, inw(ioaddr + EL3_STATUS));
812 return IRQ_RETVAL(handled);
813}
814
815static void media_check(unsigned long arg)
816{
817 struct net_device *dev = (struct net_device *)(arg);
818 struct el3_private *lp = netdev_priv(dev);
819 kio_addr_t ioaddr = dev->base_addr;
820 u16 media, errs;
821 unsigned long flags;
822
823 if (!netif_device_present(dev)) goto reschedule;
824
825 EL3WINDOW(1);
826 /* Check for pending interrupt with expired latency timer: with
827 this, we can limp along even if the interrupt is blocked */
828 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
829 (inb(ioaddr + EL3_TIMER) == 0xff)) {
830 if (!lp->fast_poll)
831 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
832 el3_interrupt(dev->irq, lp, NULL);
833 lp->fast_poll = HZ;
834 }
835 if (lp->fast_poll) {
836 lp->fast_poll--;
837 lp->media.expires = jiffies + HZ/100;
838 add_timer(&lp->media);
839 return;
840 }
841
842 /* lp->lock guards the EL3 window. Window should always be 1 except
843 when the lock is held */
844 spin_lock_irqsave(&lp->lock, flags);
845 EL3WINDOW(4);
846 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
847
848 /* Ignore collisions unless we've had no irq's recently */
849 if (jiffies - lp->last_irq < HZ) {
850 media &= ~0x0010;
851 } else {
852 /* Try harder to detect carrier errors */
853 EL3WINDOW(6);
854 outw(StatsDisable, ioaddr + EL3_CMD);
855 errs = inb(ioaddr + 0);
856 outw(StatsEnable, ioaddr + EL3_CMD);
857 lp->stats.tx_carrier_errors += errs;
858 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
859 }
860
861 if (media != lp->media_status) {
862 if ((media & lp->media_status & 0x8000) &&
863 ((lp->media_status ^ media) & 0x0800))
864 printk(KERN_INFO "%s: %s link beat\n", dev->name,
865 (lp->media_status & 0x0800 ? "lost" : "found"));
866 else if ((media & lp->media_status & 0x4000) &&
867 ((lp->media_status ^ media) & 0x0010))
868 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
869 (lp->media_status & 0x0010 ? "ok" : "problem"));
870 if (dev->if_port == 0) {
871 if (media & 0x8000) {
872 if (media & 0x0800)
873 printk(KERN_INFO "%s: flipped to 10baseT\n",
874 dev->name);
875 else
876 tc589_set_xcvr(dev, 2);
877 } else if (media & 0x4000) {
878 if (media & 0x0010)
879 tc589_set_xcvr(dev, 1);
880 else
881 printk(KERN_INFO "%s: flipped to 10base2\n",
882 dev->name);
883 }
884 }
885 lp->media_status = media;
886 }
887
888 EL3WINDOW(1);
889 spin_unlock_irqrestore(&lp->lock, flags);
890
891reschedule:
892 lp->media.expires = jiffies + HZ;
893 add_timer(&lp->media);
894}
895
896static struct net_device_stats *el3_get_stats(struct net_device *dev)
897{
898 struct el3_private *lp = netdev_priv(dev);
899 unsigned long flags;
900 dev_link_t *link = &lp->link;
901
902 if (DEV_OK(link)) {
903 spin_lock_irqsave(&lp->lock, flags);
904 update_stats(dev);
905 spin_unlock_irqrestore(&lp->lock, flags);
906 }
907 return &lp->stats;
908}
909
910/*
911 Update statistics. We change to register window 6, so this should be run
912 single-threaded if the device is active. This is expected to be a rare
913 operation, and it's simpler for the rest of the driver to assume that
914 window 1 is always valid rather than use a special window-state variable.
915
916 Caller must hold the lock for this
917*/
918static void update_stats(struct net_device *dev)
919{
920 struct el3_private *lp = netdev_priv(dev);
921 kio_addr_t ioaddr = dev->base_addr;
922
923 DEBUG(2, "%s: updating the statistics.\n", dev->name);
924 /* Turn off statistics updates while reading. */
925 outw(StatsDisable, ioaddr + EL3_CMD);
926 /* Switch to the stats window, and read everything. */
927 EL3WINDOW(6);
928 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
929 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
930 /* Multiple collisions. */ inb(ioaddr + 2);
931 lp->stats.collisions += inb(ioaddr + 3);
932 lp->stats.tx_window_errors += inb(ioaddr + 4);
933 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
934 lp->stats.tx_packets += inb(ioaddr + 6);
935 /* Rx packets */ inb(ioaddr + 7);
936 /* Tx deferrals */ inb(ioaddr + 8);
937 /* Rx octets */ inw(ioaddr + 10);
938 /* Tx octets */ inw(ioaddr + 12);
939
940 /* Back to window 1, and turn statistics back on. */
941 EL3WINDOW(1);
942 outw(StatsEnable, ioaddr + EL3_CMD);
943}
944
945static int el3_rx(struct net_device *dev)
946{
947 struct el3_private *lp = netdev_priv(dev);
948 kio_addr_t ioaddr = dev->base_addr;
949 int worklimit = 32;
950 short rx_status;
951
952 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
953 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
954 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
955 (--worklimit >= 0)) {
956 if (rx_status & 0x4000) { /* Error, update stats. */
957 short error = rx_status & 0x3800;
958 lp->stats.rx_errors++;
959 switch (error) {
960 case 0x0000: lp->stats.rx_over_errors++; break;
961 case 0x0800: lp->stats.rx_length_errors++; break;
962 case 0x1000: lp->stats.rx_frame_errors++; break;
963 case 0x1800: lp->stats.rx_length_errors++; break;
964 case 0x2000: lp->stats.rx_frame_errors++; break;
965 case 0x2800: lp->stats.rx_crc_errors++; break;
966 }
967 } else {
968 short pkt_len = rx_status & 0x7ff;
969 struct sk_buff *skb;
970
971 skb = dev_alloc_skb(pkt_len+5);
972
973 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
974 pkt_len, rx_status);
975 if (skb != NULL) {
976 skb->dev = dev;
977 skb_reserve(skb, 2);
978 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
979 (pkt_len+3)>>2);
980 skb->protocol = eth_type_trans(skb, dev);
981 netif_rx(skb);
982 dev->last_rx = jiffies;
983 lp->stats.rx_packets++;
984 lp->stats.rx_bytes += pkt_len;
985 } else {
986 DEBUG(1, "%s: couldn't allocate a sk_buff of"
987 " size %d.\n", dev->name, pkt_len);
988 lp->stats.rx_dropped++;
989 }
990 }
991 /* Pop the top of the Rx FIFO */
992 tc589_wait_for_completion(dev, RxDiscard);
993 }
994 if (worklimit == 0)
995 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
996 return 0;
997}
998
999static void set_multicast_list(struct net_device *dev)
1000{
1001 struct el3_private *lp = netdev_priv(dev);
1002 dev_link_t *link = &lp->link;
1003 kio_addr_t ioaddr = dev->base_addr;
1004 u16 opts = SetRxFilter | RxStation | RxBroadcast;
1005
1006 if (!(DEV_OK(link))) return;
1007 if (dev->flags & IFF_PROMISC)
1008 opts |= RxMulticast | RxProm;
1009 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
1010 opts |= RxMulticast;
1011 outw(opts, ioaddr + EL3_CMD);
1012}
1013
1014static int el3_close(struct net_device *dev)
1015{
1016 struct el3_private *lp = netdev_priv(dev);
1017 dev_link_t *link = &lp->link;
1018 kio_addr_t ioaddr = dev->base_addr;
1019
1020 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
1021
1022 if (DEV_OK(link)) {
1023 /* Turn off statistics ASAP. We update lp->stats below. */
1024 outw(StatsDisable, ioaddr + EL3_CMD);
1025
1026 /* Disable the receiver and transmitter. */
1027 outw(RxDisable, ioaddr + EL3_CMD);
1028 outw(TxDisable, ioaddr + EL3_CMD);
1029
1030 if (dev->if_port == 2)
1031 /* Turn off thinnet power. Green! */
1032 outw(StopCoax, ioaddr + EL3_CMD);
1033 else if (dev->if_port == 1) {
1034 /* Disable link beat and jabber */
1035 EL3WINDOW(4);
1036 outw(0, ioaddr + WN4_MEDIA);
1037 }
1038
1039 /* Switching back to window 0 disables the IRQ. */
1040 EL3WINDOW(0);
1041 /* But we explicitly zero the IRQ line select anyway. */
1042 outw(0x0f00, ioaddr + WN0_IRQ);
1043
1044 /* Check if the card still exists */
1045 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
1046 update_stats(dev);
1047 }
1048
1049 link->open--;
1050 netif_stop_queue(dev);
1051 del_timer_sync(&lp->media);
1052
1053 return 0;
1054}
1055
7ffec58c
DB		 1056static struct pcmcia_device_id tc589_ids[] = {
1057 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
1058 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
1059 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
1060 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
1061 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
1062 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
1063 PCMCIA_DEVICE_NULL,
1064};
1065MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
1066
1da177e4
LT		 1067static struct pcmcia_driver tc589_driver = {
1068 .owner = THIS_MODULE,
1069 .drv = {
1070 .name = "3c589_cs",
1071 },
1072 .attach = tc589_attach,
1e212f36 1073 .event = tc589_event,
cc3b4866 1074 .remove = tc589_detach,
7ffec58c 1075 .id_table = tc589_ids,
98e4c28b
DB		 1076 .suspend = tc589_suspend,
1077 .resume = tc589_resume,
1da177e4
LT		 1078};
1079
1080static int __init init_tc589(void)
1081{
1082 return pcmcia_register_driver(&tc589_driver);
1083}
1084
1085static void __exit exit_tc589(void)
1086{
1087 pcmcia_unregister_driver(&tc589_driver);
1088 BUG_ON(dev_list != NULL);
1089}
1090
1091module_init(init_tc589);
1092module_exit(exit_tc589);
Linux kernel - Deliverables
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