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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*** -*- linux-c -*- **********************************************************
2
3 Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
4
5 Copyright 2000-2001 ATMEL Corporation.
6 Copyright 2003 Simon Kelley.
7
8 This code was developed from version 2.1.1 of the Atmel drivers,
9 released by Atmel corp. under the GPL in December 2002. It also
10 includes code from the Linux aironet drivers (C) Benjamin Reed,
11 and the Linux PCMCIA package, (C) David Hinds.
12
13 For all queries about this code, please contact the current author,
14 Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
15
16 This program is free software; you can redistribute it and/or modify
17 it under the terms of the GNU General Public License as published by
18 the Free Software Foundation; either version 2 of the License, or
19 (at your option) any later version.
20
21 This software is distributed in the hope that it will be useful,
22 but WITHOUT ANY WARRANTY; without even the implied warranty of
23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 GNU General Public License for more details.
25
26 You should have received a copy of the GNU General Public License
27 along with Atmel wireless lan drivers; if not, write to the Free Software
28 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29
30******************************************************************************/
31
32#include <linux/config.h>
33#ifdef __IN_PCMCIA_PACKAGE__
34#include <pcmcia/k_compat.h>
35#endif
36#include <linux/init.h>
37#include <linux/kernel.h>
38#include <linux/module.h>
39#include <linux/ptrace.h>
40#include <linux/slab.h>
41#include <linux/string.h>
42#include <linux/netdevice.h>
43#include <linux/moduleparam.h>
44#include <linux/device.h>
45
Linus Torvalds1da177e2005-04-16 15:20:36 -070046#include <pcmcia/cs_types.h>
47#include <pcmcia/cs.h>
48#include <pcmcia/cistpl.h>
49#include <pcmcia/cisreg.h>
50#include <pcmcia/ds.h>
51#include <pcmcia/ciscode.h>
52
53#include <asm/io.h>
54#include <asm/system.h>
55#include <linux/wireless.h>
56
57#include "atmel.h"
58
59/*
60 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
61 you do not define PCMCIA_DEBUG at all, all the debug code will be
62 left out. If you compile with PCMCIA_DEBUG=0, the debug code will
63 be present but disabled -- but it can then be enabled for specific
64 modules at load time with a 'pc_debug=#' option to insmod.
65*/
66#ifdef PCMCIA_DEBUG
67static int pc_debug = PCMCIA_DEBUG;
68module_param(pc_debug, int, 0);
69static char *version = "$Revision: 1.2 $";
70#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
71#else
72#define DEBUG(n, args...)
73#endif
74
75/*====================================================================*/
76
77MODULE_AUTHOR("Simon Kelley");
78MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
79MODULE_LICENSE("GPL");
80MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
81
82/*====================================================================*/
83
84/*
85 The event() function is this driver's Card Services event handler.
86 It will be called by Card Services when an appropriate card status
87 event is received. The config() and release() entry points are
88 used to configure or release a socket, in response to card
89 insertion and ejection events. They are invoked from the atmel_cs
90 event handler.
91*/
92
93static void atmel_config(dev_link_t *link);
94static void atmel_release(dev_link_t *link);
95static int atmel_event(event_t event, int priority,
96 event_callback_args_t *args);
97
98/*
99 The attach() and detach() entry points are used to create and destroy
100 "instances" of the driver, where each instance represents everything
101 needed to manage one actual PCMCIA card.
102*/
103
104static dev_link_t *atmel_attach(void);
105static void atmel_detach(dev_link_t *);
106
107/*
108 You'll also need to prototype all the functions that will actually
109 be used to talk to your device. See 'pcmem_cs' for a good example
110 of a fully self-sufficient driver; the other drivers rely more or
111 less on other parts of the kernel.
112*/
113
114/*
115 The dev_info variable is the "key" that is used to match up this
116 device driver with appropriate cards, through the card configuration
117 database.
118*/
119
120static dev_info_t dev_info = "atmel_cs";
121
122/*
123 A linked list of "instances" of the atmelnet device. Each actual
124 PCMCIA card corresponds to one device instance, and is described
125 by one dev_link_t structure (defined in ds.h).
126
127 You may not want to use a linked list for this -- for example, the
128 memory card driver uses an array of dev_link_t pointers, where minor
129 device numbers are used to derive the corresponding array index.
130*/
131
132static dev_link_t *dev_list = NULL;
133
134/*
135 A dev_link_t structure has fields for most things that are needed
136 to keep track of a socket, but there will usually be some device
137 specific information that also needs to be kept track of. The
138 'priv' pointer in a dev_link_t structure can be used to point to
139 a device-specific private data structure, like this.
140
141 A driver needs to provide a dev_node_t structure for each device
142 on a card. In some cases, there is only one device per card (for
143 example, ethernet cards, modems). In other cases, there may be
144 many actual or logical devices (SCSI adapters, memory cards with
145 multiple partitions). The dev_node_t structures need to be kept
146 in a linked list starting at the 'dev' field of a dev_link_t
147 structure. We allocate them in the card's private data structure,
148 because they generally shouldn't be allocated dynamically.
149
150 In this case, we also provide a flag to indicate if a device is
151 "stopped" due to a power management event, or card ejection. The
152 device IO routines can use a flag like this to throttle IO to a
153 card that is not ready to accept it.
154*/
155
156typedef struct local_info_t {
157 dev_node_t node;
158 struct net_device *eth_dev;
159} local_info_t;
160
161/*======================================================================
162
163 atmel_attach() creates an "instance" of the driver, allocating
164 local data structures for one device. The device is registered
165 with Card Services.
166
167 The dev_link structure is initialized, but we don't actually
168 configure the card at this point -- we wait until we receive a
169 card insertion event.
170
171 ======================================================================*/
172
173static dev_link_t *atmel_attach(void)
174{
175 client_reg_t client_reg;
176 dev_link_t *link;
177 local_info_t *local;
178 int ret;
179
180 DEBUG(0, "atmel_attach()\n");
181
182 /* Initialize the dev_link_t structure */
183 link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
184 if (!link) {
185 printk(KERN_ERR "atmel_cs: no memory for new device\n");
186 return NULL;
187 }
188 memset(link, 0, sizeof(struct dev_link_t));
189
190 /* Interrupt setup */
191 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
192 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
193 link->irq.Handler = NULL;
194
195 /*
196 General socket configuration defaults can go here. In this
197 client, we assume very little, and rely on the CIS for almost
198 everything. In most clients, many details (i.e., number, sizes,
199 and attributes of IO windows) are fixed by the nature of the
200 device, and can be hard-wired here.
201 */
202 link->conf.Attributes = 0;
203 link->conf.Vcc = 50;
204 link->conf.IntType = INT_MEMORY_AND_IO;
205
206 /* Allocate space for private device-specific data */
207 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
208 if (!local) {
209 printk(KERN_ERR "atmel_cs: no memory for new device\n");
210 kfree (link);
211 return NULL;
212 }
213 memset(local, 0, sizeof(local_info_t));
214 link->priv = local;
215
216 /* Register with Card Services */
217 link->next = dev_list;
218 dev_list = link;
219 client_reg.dev_info = &dev_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 client_reg.Version = 0x0210;
221 client_reg.event_callback_args.client_data = link;
222 ret = pcmcia_register_client(&link->handle, &client_reg);
223 if (ret != 0) {
224 cs_error(link->handle, RegisterClient, ret);
225 atmel_detach(link);
226 return NULL;
227 }
228
229 return link;
230} /* atmel_attach */
231
232/*======================================================================
233
234 This deletes a driver "instance". The device is de-registered
235 with Card Services. If it has been released, all local data
236 structures are freed. Otherwise, the structures will be freed
237 when the device is released.
238
239 ======================================================================*/
240
241static void atmel_detach(dev_link_t *link)
242{
243 dev_link_t **linkp;
244
245 DEBUG(0, "atmel_detach(0x%p)\n", link);
246
247 /* Locate device structure */
248 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
249 if (*linkp == link) break;
250 if (*linkp == NULL)
251 return;
252
253 if (link->state & DEV_CONFIG)
254 atmel_release(link);
255
256 /* Break the link with Card Services */
257 if (link->handle)
258 pcmcia_deregister_client(link->handle);
259
260 /* Unlink device structure, free pieces */
261 *linkp = link->next;
Jesper Juhlb4558ea2005-10-28 16:53:13 -0400262 kfree(link->priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 kfree(link);
264}
265
266/*======================================================================
267
268 atmel_config() is scheduled to run after a CARD_INSERTION event
269 is received, to configure the PCMCIA socket, and to make the
270 device available to the system.
271
272 ======================================================================*/
273
274#define CS_CHECK(fn, ret) \
275do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
276
277/* Call-back function to interrogate PCMCIA-specific information
278 about the current existance of the card */
279static int card_present(void *arg)
280{
281 dev_link_t *link = (dev_link_t *)arg;
282 if (link->state & DEV_SUSPEND)
283 return 0;
284 else if (link->state & DEV_PRESENT)
285 return 1;
286
287 return 0;
288}
289
290/* list of cards we know about and their firmware requirements.
291 Go either by Manfid or version strings.
292 Cards not in this list will need a firmware parameter to the module
293 in all probability. Note that the SMC 2632 V2 and V3 have the same
294 manfids, so we ignore those and use the version1 strings. */
295
296static struct {
297 int manf, card;
298 char *ver1;
299 AtmelFWType firmware;
300 char *name;
301} card_table[] = {
302 { 0, 0, "WLAN/802.11b PC CARD", ATMEL_FW_TYPE_502D, "Actiontec 802CAT1" },
303 { 0, 0, "ATMEL/AT76C502AR", ATMEL_FW_TYPE_502, "NoName-RFMD" },
304 { 0, 0, "ATMEL/AT76C502AR_D", ATMEL_FW_TYPE_502D, "NoName-revD" },
305 { 0, 0, "ATMEL/AT76C502AR_E", ATMEL_FW_TYPE_502E, "NoName-revE" },
306 { 0, 0, "ATMEL/AT76C504", ATMEL_FW_TYPE_504, "NoName-504" },
307 { 0, 0, "ATMEL/AT76C504A", ATMEL_FW_TYPE_504A_2958, "NoName-504a-2958" },
308 { 0, 0, "ATMEL/AT76C504_R", ATMEL_FW_TYPE_504_2958, "NoName-504-2958" },
309 { MANFID_3COM, 0x0620, NULL, ATMEL_FW_TYPE_502_3COM, "3com 3CRWE62092B" },
310 { MANFID_3COM, 0x0696, NULL, ATMEL_FW_TYPE_502_3COM, "3com 3CRSHPW196" },
311 { 0, 0, "SMC/2632W-V2", ATMEL_FW_TYPE_502, "SMC 2632W-V2" },
312 { 0, 0, "SMC/2632W", ATMEL_FW_TYPE_502D, "SMC 2632W-V3" },
313 { 0xd601, 0x0007, NULL, ATMEL_FW_TYPE_502, "Sitecom WLAN-011" },
314 { 0x01bf, 0x3302, NULL, ATMEL_FW_TYPE_502E, "Belkin F5D6020-V2" },
315 { 0, 0, "BT/Voyager 1020 Laptop Adapter", ATMEL_FW_TYPE_502, "BT Voyager 1020" },
316 { 0, 0, "IEEE 802.11b/Wireless LAN PC Card", ATMEL_FW_TYPE_502, "Siemens Gigaset PC Card II" },
simon@thekelleys.org.uke885b5e2005-05-07 21:33:31 +0100317 { 0, 0, "IEEE 802.11b/Wireless LAN Card S", ATMEL_FW_TYPE_504_2958, "Siemens Gigaset PC Card II" },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 { 0, 0, "CNet/CNWLC 11Mbps Wireless PC Card V-5", ATMEL_FW_TYPE_502E, "CNet CNWLC-811ARL" },
319 { 0, 0, "Wireless/PC_CARD", ATMEL_FW_TYPE_502D, "Planet WL-3552" },
320 { 0, 0, "OEM/11Mbps Wireless LAN PC Card V-3", ATMEL_FW_TYPE_502, "OEM 11Mbps WLAN PCMCIA Card" },
321 { 0, 0, "11WAVE/11WP611AL-E", ATMEL_FW_TYPE_502E, "11WAVE WaveBuddy" },
322 { 0, 0, "LG/LW2100N", ATMEL_FW_TYPE_502E, "LG LW2100N 11Mbps WLAN PCMCIA Card" },
323};
324
325static void atmel_config(dev_link_t *link)
326{
327 client_handle_t handle;
328 tuple_t tuple;
329 cisparse_t parse;
330 local_info_t *dev;
331 int last_fn, last_ret;
332 u_char buf[64];
333 int card_index = -1, done = 0;
334
335 handle = link->handle;
336 dev = link->priv;
337
338 DEBUG(0, "atmel_config(0x%p)\n", link);
339
340 tuple.Attributes = 0;
341 tuple.TupleData = buf;
342 tuple.TupleDataMax = sizeof(buf);
343 tuple.TupleOffset = 0;
344
345 tuple.DesiredTuple = CISTPL_MANFID;
346 if (pcmcia_get_first_tuple(handle, &tuple) == 0) {
347 int i;
348 cistpl_manfid_t *manfid;
349 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
350 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
351 manfid = &(parse.manfid);
352 for (i = 0; i < sizeof(card_table)/sizeof(card_table[0]); i++) {
353 if (!card_table[i].ver1 &&
354 manfid->manf == card_table[i].manf &&
355 manfid->card == card_table[i].card) {
356 card_index = i;
357 done = 1;
358 }
359 }
360 }
361
362 tuple.DesiredTuple = CISTPL_VERS_1;
363 if (!done && (pcmcia_get_first_tuple(handle, &tuple) == 0)) {
364 int i, j, k;
365 cistpl_vers_1_t *ver1;
366 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
367 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
368 ver1 = &(parse.version_1);
369
370 for (i = 0; i < sizeof(card_table)/sizeof(card_table[0]); i++) {
371 for (j = 0; j < ver1->ns; j++) {
372 char *p = card_table[i].ver1;
373 char *q = &ver1->str[ver1->ofs[j]];
374 if (!p)
375 goto mismatch;
376 for (k = 0; k < j; k++) {
377 while ((*p != '\0') && (*p != '/')) p++;
378 if (*p == '\0') {
379 if (*q != '\0')
380 goto mismatch;
381 } else {
382 p++;
383 }
384 }
385 while((*q != '\0') && (*p != '\0') &&
386 (*p != '/') && (*p == *q)) p++, q++;
387 if (((*p != '\0') && *p != '/') || *q != '\0')
388 goto mismatch;
389 }
390 card_index = i;
391 break; /* done */
392
393 mismatch:
394 j = 0; /* dummy stmt to shut up compiler */
395 }
396 }
397
398 /*
399 This reads the card's CONFIG tuple to find its configuration
400 registers.
401 */
402 tuple.DesiredTuple = CISTPL_CONFIG;
403 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
404 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
405 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
406 link->conf.ConfigBase = parse.config.base;
407 link->conf.Present = parse.config.rmask[0];
408
409 /* Configure card */
410 link->state |= DEV_CONFIG;
411
412 /*
413 In this loop, we scan the CIS for configuration table entries,
414 each of which describes a valid card configuration, including
415 voltage, IO window, memory window, and interrupt settings.
416
417 We make no assumptions about the card to be configured: we use
418 just the information available in the CIS. In an ideal world,
419 this would work for any PCMCIA card, but it requires a complete
420 and accurate CIS. In practice, a driver usually "knows" most of
421 these things without consulting the CIS, and most client drivers
422 will only use the CIS to fill in implementation-defined details.
423 */
424 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
425 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
426 while (1) {
427 cistpl_cftable_entry_t dflt = { 0 };
428 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
429 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
430 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
431 goto next_entry;
432
433 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
434 if (cfg->index == 0) goto next_entry;
435 link->conf.ConfigIndex = cfg->index;
436
437 /* Does this card need audio output? */
438 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
439 link->conf.Attributes |= CONF_ENABLE_SPKR;
440 link->conf.Status = CCSR_AUDIO_ENA;
441 }
442
443 /* Use power settings for Vcc and Vpp if present */
444 /* Note that the CIS values need to be rescaled */
445 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM))
446 link->conf.Vcc = cfg->vcc.param[CISTPL_POWER_VNOM]/10000;
447 else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM))
448 link->conf.Vcc = dflt.vcc.param[CISTPL_POWER_VNOM]/10000;
449
450 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
451 link->conf.Vpp1 = link->conf.Vpp2 =
452 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
453 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
454 link->conf.Vpp1 = link->conf.Vpp2 =
455 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
456
457 /* Do we need to allocate an interrupt? */
458 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
459 link->conf.Attributes |= CONF_ENABLE_IRQ;
460
461 /* IO window settings */
462 link->io.NumPorts1 = link->io.NumPorts2 = 0;
463 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
464 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
465 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
466 if (!(io->flags & CISTPL_IO_8BIT))
467 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
468 if (!(io->flags & CISTPL_IO_16BIT))
469 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
470 link->io.BasePort1 = io->win[0].base;
471 link->io.NumPorts1 = io->win[0].len;
472 if (io->nwin > 1) {
473 link->io.Attributes2 = link->io.Attributes1;
474 link->io.BasePort2 = io->win[1].base;
475 link->io.NumPorts2 = io->win[1].len;
476 }
477 }
478
479 /* This reserves IO space but doesn't actually enable it */
480 if (pcmcia_request_io(link->handle, &link->io) != 0)
481 goto next_entry;
482
483 /* If we got this far, we're cool! */
484 break;
485
486 next_entry:
487 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
488 }
489
490 /*
491 Allocate an interrupt line. Note that this does not assign a
492 handler to the interrupt, unless the 'Handler' member of the
493 irq structure is initialized.
494 */
495 if (link->conf.Attributes & CONF_ENABLE_IRQ)
496 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
497
498 /*
499 This actually configures the PCMCIA socket -- setting up
500 the I/O windows and the interrupt mapping, and putting the
501 card and host interface into "Memory and IO" mode.
502 */
503 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
504
505 if (link->irq.AssignedIRQ == 0) {
506 printk(KERN_ALERT
507 "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
508 goto cs_failed;
509 }
510
511 ((local_info_t*)link->priv)->eth_dev =
512 init_atmel_card(link->irq.AssignedIRQ,
513 link->io.BasePort1,
514 card_index == -1 ? ATMEL_FW_TYPE_NONE : card_table[card_index].firmware,
515 &handle_to_dev(handle),
516 card_present,
517 link);
518 if (!((local_info_t*)link->priv)->eth_dev)
519 goto cs_failed;
520
521 /*
522 At this point, the dev_node_t structure(s) need to be
523 initialized and arranged in a linked list at link->dev.
524 */
525 strcpy(dev->node.dev_name, ((local_info_t*)link->priv)->eth_dev->name );
526 dev->node.major = dev->node.minor = 0;
527 link->dev = &dev->node;
528
529 /* Finally, report what we've done */
530 printk(KERN_INFO "%s: %s%sindex 0x%02x: Vcc %d.%d",
531 dev->node.dev_name,
532 card_index == -1 ? "" : card_table[card_index].name,
533 card_index == -1 ? "" : " ",
534 link->conf.ConfigIndex,
535 link->conf.Vcc/10, link->conf.Vcc%10);
536 if (link->conf.Vpp1)
537 printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
538 if (link->conf.Attributes & CONF_ENABLE_IRQ)
539 printk(", irq %d", link->irq.AssignedIRQ);
540 if (link->io.NumPorts1)
541 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
542 link->io.BasePort1+link->io.NumPorts1-1);
543 if (link->io.NumPorts2)
544 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
545 link->io.BasePort2+link->io.NumPorts2-1);
546 printk("\n");
547
548 link->state &= ~DEV_CONFIG_PENDING;
549 return;
550
551 cs_failed:
552 cs_error(link->handle, last_fn, last_ret);
553 atmel_release(link);
554}
555
556/*======================================================================
557
558 After a card is removed, atmel_release() will unregister the
559 device, and release the PCMCIA configuration. If the device is
560 still open, this will be postponed until it is closed.
561
562 ======================================================================*/
563
564static void atmel_release(dev_link_t *link)
565{
566 struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
567
568 DEBUG(0, "atmel_release(0x%p)\n", link);
569
570 /* Unlink the device chain */
571 link->dev = NULL;
572
573 if (dev)
574 stop_atmel_card(dev, 0);
575 ((local_info_t*)link->priv)->eth_dev = NULL;
576
577 /* Don't bother checking to see if these succeed or not */
578 pcmcia_release_configuration(link->handle);
579 if (link->io.NumPorts1)
580 pcmcia_release_io(link->handle, &link->io);
581 if (link->irq.AssignedIRQ)
582 pcmcia_release_irq(link->handle, &link->irq);
583 link->state &= ~DEV_CONFIG;
584}
585
586/*======================================================================
587
588 The card status event handler. Mostly, this schedules other
589 stuff to run after an event is received.
590
591 When a CARD_REMOVAL event is received, we immediately set a
592 private flag to block future accesses to this device. All the
593 functions that actually access the device should check this flag
594 to make sure the card is still present.
595
596 ======================================================================*/
597
598static int atmel_event(event_t event, int priority,
599 event_callback_args_t *args)
600{
601 dev_link_t *link = args->client_data;
602 local_info_t *local = link->priv;
603
604 DEBUG(1, "atmel_event(0x%06x)\n", event);
605
606 switch (event) {
607 case CS_EVENT_CARD_REMOVAL:
608 link->state &= ~DEV_PRESENT;
609 if (link->state & DEV_CONFIG) {
610 netif_device_detach(local->eth_dev);
611 atmel_release(link);
612 }
613 break;
614 case CS_EVENT_CARD_INSERTION:
615 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
616 atmel_config(link);
617 break;
618 case CS_EVENT_PM_SUSPEND:
619 link->state |= DEV_SUSPEND;
620 /* Fall through... */
621 case CS_EVENT_RESET_PHYSICAL:
622 if (link->state & DEV_CONFIG) {
623 netif_device_detach(local->eth_dev);
624 pcmcia_release_configuration(link->handle);
625 }
626 break;
627 case CS_EVENT_PM_RESUME:
628 link->state &= ~DEV_SUSPEND;
629 /* Fall through... */
630 case CS_EVENT_CARD_RESET:
631 if (link->state & DEV_CONFIG) {
632 pcmcia_request_configuration(link->handle, &link->conf);
633 atmel_open(local->eth_dev);
634 netif_device_attach(local->eth_dev);
635 }
636 break;
637 }
638 return 0;
639} /* atmel_event */
640
641/*====================================================================*/
Dominik Brodowski4a17a112005-06-27 16:28:34 -0700642static struct pcmcia_device_id atmel_ids[] = {
643 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0620),
644 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0696),
645 PCMCIA_DEVICE_MANF_CARD(0x01bf, 0x3302),
646 PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0007),
647 PCMCIA_DEVICE_PROD_ID12("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9),
648 PCMCIA_DEVICE_PROD_ID12("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f),
649 PCMCIA_DEVICE_PROD_ID12("ATMEL", "AT76C504", 0xabda4164, 0x5040670a),
650 PCMCIA_DEVICE_PROD_ID12("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f),
651 PCMCIA_DEVICE_PROD_ID12("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5),
652 PCMCIA_DEVICE_PROD_ID12("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b),
653 PCMCIA_DEVICE_PROD_ID12("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6),
654 PCMCIA_DEVICE_PROD_ID12("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68),
655 PCMCIA_DEVICE_PROD_ID12("SMC", "2632W", 0xc4f8b18b, 0x30f38774),
656 PCMCIA_DEVICE_PROD_ID12("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377),
657 PCMCIA_DEVICE_PROD_ID12("Wireless", "PC", 0xa407ecdd, 0x556e4d7e),
658 PCMCIA_DEVICE_PROD_ID12("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4),
659 PCMCIA_DEVICE_NULL
660};
661MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
662
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663static struct pcmcia_driver atmel_driver = {
Dominik Brodowski1e212f32005-07-07 17:59:00 -0700664 .owner = THIS_MODULE,
665 .drv = {
666 .name = "atmel_cs",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 },
Dominik Brodowski1e212f32005-07-07 17:59:00 -0700668 .attach = atmel_attach,
669 .event = atmel_event,
670 .detach = atmel_detach,
Dominik Brodowski4a17a112005-06-27 16:28:34 -0700671 .id_table = atmel_ids,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672};
673
674static int atmel_cs_init(void)
675{
676 return pcmcia_register_driver(&atmel_driver);
677}
678
679static void atmel_cs_cleanup(void)
680{
681 pcmcia_unregister_driver(&atmel_driver);
682 BUG_ON(dev_list != NULL);
683}
684
685/*
686 This program is free software; you can redistribute it and/or
687 modify it under the terms of the GNU General Public License
688 as published by the Free Software Foundation; either version 2
689 of the License, or (at your option) any later version.
690
691 This program is distributed in the hope that it will be useful,
692 but WITHOUT ANY WARRANTY; without even the implied warranty of
693 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
694 GNU General Public License for more details.
695
696 In addition:
697
698 Redistribution and use in source and binary forms, with or without
699 modification, are permitted provided that the following conditions
700 are met:
701
702 1. Redistributions of source code must retain the above copyright
703 notice, this list of conditions and the following disclaimer.
704 2. Redistributions in binary form must reproduce the above copyright
705 notice, this list of conditions and the following disclaimer in the
706 documentation and/or other materials provided with the distribution.
707 3. The name of the author may not be used to endorse or promote
708 products derived from this software without specific prior written
709 permission.
710
711 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
712 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
713 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
714 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
715 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
716 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
717 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
718 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
719 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
720 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
721 POSSIBILITY OF SUCH DAMAGE.
722*/
723
724module_init(atmel_cs_init);
725module_exit(atmel_cs_cleanup);