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pcmcia: remove cs_types.h
[linux-2.6/cjktty.git] / drivers / pcmcia / ds.c
blobbacfc55f2026c7d736f2bd8c2f1e825a8cd47d6d
1 /*
2 * ds.c -- 16-bit PCMCIA core support
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * The initial developer of the original code is David A. Hinds
9 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
10 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
11 *
12 * (C) 1999 David A. Hinds
13 * (C) 2003 - 2010 Dominik Brodowski
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/errno.h>
20 #include <linux/list.h>
21 #include <linux/delay.h>
22 #include <linux/workqueue.h>
23 #include <linux/crc32.h>
24 #include <linux/firmware.h>
25 #include <linux/kref.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/slab.h>
28
29 #include <pcmcia/cs.h>
30 #include <pcmcia/cistpl.h>
31 #include <pcmcia/ds.h>
32 #include <pcmcia/ss.h>
33
34 #include "cs_internal.h"
35
36 /*====================================================================*/
37
38 /* Module parameters */
39
40 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
41 MODULE_DESCRIPTION("PCMCIA Driver Services");
42 MODULE_LICENSE("GPL");
43
44
45 /*====================================================================*/
46
47 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
48 {
49 struct pcmcia_device_id *did = p_drv->id_table;
50 unsigned int i;
51 u32 hash;
52
53 if (!p_drv->probe || !p_drv->remove)
54 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
55 "function\n", p_drv->drv.name);
56
57 while (did && did->match_flags) {
58 for (i = 0; i < 4; i++) {
59 if (!did->prod_id[i])
60 continue;
61
62 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
63 if (hash == did->prod_id_hash[i])
64 continue;
65
66 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
67 "product string \"%s\": is 0x%x, should "
68 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
69 did->prod_id_hash[i], hash);
70 printk(KERN_DEBUG "pcmcia: see "
71 "Documentation/pcmcia/devicetable.txt for "
72 "details\n");
73 }
74 did++;
75 }
76
77 return;
78 }
79
80
81 /*======================================================================*/
82
83
84 struct pcmcia_dynid {
85 struct list_head node;
86 struct pcmcia_device_id id;
87 };
88
89 /**
90 * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices
91 * @driver: target device driver
92 * @buf: buffer for scanning device ID data
93 * @count: input size
94 *
95 * Adds a new dynamic PCMCIA device ID to this driver,
96 * and causes the driver to probe for all devices again.
97 */
98 static ssize_t
99 pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count)
100 {
101 struct pcmcia_dynid *dynid;
102 struct pcmcia_driver *pdrv = to_pcmcia_drv(driver);
103 __u16 match_flags, manf_id, card_id;
104 __u8 func_id, function, device_no;
105 __u32 prod_id_hash[4] = {0, 0, 0, 0};
106 int fields = 0;
107 int retval = 0;
108
109 fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
110 &match_flags, &manf_id, &card_id, &func_id, &function, &device_no,
111 &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]);
112 if (fields < 6)
113 return -EINVAL;
114
115 dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL);
116 if (!dynid)
117 return -ENOMEM;
118
119 dynid->id.match_flags = match_flags;
120 dynid->id.manf_id = manf_id;
121 dynid->id.card_id = card_id;
122 dynid->id.func_id = func_id;
123 dynid->id.function = function;
124 dynid->id.device_no = device_no;
125 memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4);
126
127 mutex_lock(&pdrv->dynids.lock);
128 list_add_tail(&dynid->node, &pdrv->dynids.list);
129 mutex_unlock(&pdrv->dynids.lock);
130
131 if (get_driver(&pdrv->drv)) {
132 retval = driver_attach(&pdrv->drv);
133 put_driver(&pdrv->drv);
134 }
135
136 if (retval)
137 return retval;
138 return count;
139 }
140 static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id);
141
142 static void
143 pcmcia_free_dynids(struct pcmcia_driver *drv)
144 {
145 struct pcmcia_dynid *dynid, *n;
146
147 mutex_lock(&drv->dynids.lock);
148 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
149 list_del(&dynid->node);
150 kfree(dynid);
151 }
152 mutex_unlock(&drv->dynids.lock);
153 }
154
155 static int
156 pcmcia_create_newid_file(struct pcmcia_driver *drv)
157 {
158 int error = 0;
159 if (drv->probe != NULL)
160 error = driver_create_file(&drv->drv, &driver_attr_new_id);
161 return error;
162 }
163
164
165 /**
166 * pcmcia_register_driver - register a PCMCIA driver with the bus core
167 * @driver: the &driver being registered
168 *
169 * Registers a PCMCIA driver with the PCMCIA bus core.
170 */
171 int pcmcia_register_driver(struct pcmcia_driver *driver)
172 {
173 int error;
174
175 if (!driver)
176 return -EINVAL;
177
178 pcmcia_check_driver(driver);
179
180 /* initialize common fields */
181 driver->drv.bus = &pcmcia_bus_type;
182 driver->drv.owner = driver->owner;
183 mutex_init(&driver->dynids.lock);
184 INIT_LIST_HEAD(&driver->dynids.list);
185
186 pr_debug("registering driver %s\n", driver->drv.name);
187
188 error = driver_register(&driver->drv);
189 if (error < 0)
190 return error;
191
192 error = pcmcia_create_newid_file(driver);
193 if (error)
194 driver_unregister(&driver->drv);
195
196 return error;
197 }
198 EXPORT_SYMBOL(pcmcia_register_driver);
199
200 /**
201 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
202 * @driver: the &driver being unregistered
203 */
204 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
205 {
206 pr_debug("unregistering driver %s\n", driver->drv.name);
207 driver_unregister(&driver->drv);
208 pcmcia_free_dynids(driver);
209 }
210 EXPORT_SYMBOL(pcmcia_unregister_driver);
211
212
213 /* pcmcia_device handling */
214
215 static struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev)
216 {
217 struct device *tmp_dev;
218 tmp_dev = get_device(&p_dev->dev);
219 if (!tmp_dev)
220 return NULL;
221 return to_pcmcia_dev(tmp_dev);
222 }
223
224 static void pcmcia_put_dev(struct pcmcia_device *p_dev)
225 {
226 if (p_dev)
227 put_device(&p_dev->dev);
228 }
229
230 static void pcmcia_release_function(struct kref *ref)
231 {
232 struct config_t *c = container_of(ref, struct config_t, ref);
233 pr_debug("releasing config_t\n");
234 kfree(c);
235 }
236
237 static void pcmcia_release_dev(struct device *dev)
238 {
239 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
240 int i;
241 dev_dbg(dev, "releasing device\n");
242 pcmcia_put_socket(p_dev->socket);
243 for (i = 0; i < 4; i++)
244 kfree(p_dev->prod_id[i]);
245 kfree(p_dev->devname);
246 kref_put(&p_dev->function_config->ref, pcmcia_release_function);
247 kfree(p_dev);
248 }
249
250
251 static int pcmcia_device_probe(struct device *dev)
252 {
253 struct pcmcia_device *p_dev;
254 struct pcmcia_driver *p_drv;
255 struct pcmcia_socket *s;
256 cistpl_config_t cis_config;
257 int ret = 0;
258
259 dev = get_device(dev);
260 if (!dev)
261 return -ENODEV;
262
263 p_dev = to_pcmcia_dev(dev);
264 p_drv = to_pcmcia_drv(dev->driver);
265 s = p_dev->socket;
266
267 dev_dbg(dev, "trying to bind to %s\n", p_drv->drv.name);
268
269 if ((!p_drv->probe) || (!p_dev->function_config) ||
270 (!try_module_get(p_drv->owner))) {
271 ret = -EINVAL;
272 goto put_dev;
273 }
274
275 /* set up some more device information */
276 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG,
277 &cis_config);
278 if (!ret) {
279 p_dev->conf.ConfigBase = cis_config.base;
280 p_dev->conf.Present = cis_config.rmask[0];
281 } else {
282 dev_printk(KERN_INFO, dev,
283 "pcmcia: could not parse base and rmask0 of CIS\n");
284 p_dev->conf.ConfigBase = 0;
285 p_dev->conf.Present = 0;
286 }
287
288 ret = p_drv->probe(p_dev);
289 if (ret) {
290 dev_dbg(dev, "binding to %s failed with %d\n",
291 p_drv->drv.name, ret);
292 goto put_module;
293 }
294
295 mutex_lock(&s->ops_mutex);
296 if ((s->pcmcia_pfc) &&
297 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
298 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
299 mutex_unlock(&s->ops_mutex);
300
301 put_module:
302 if (ret)
303 module_put(p_drv->owner);
304 put_dev:
305 if (ret)
306 put_device(dev);
307 return ret;
308 }
309
310
311 /*
312 * Removes a PCMCIA card from the device tree and socket list.
313 */
314 static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
315 {
316 struct pcmcia_device *p_dev;
317 struct pcmcia_device *tmp;
318
319 dev_dbg(leftover ? &leftover->dev : &s->dev,
320 "pcmcia_card_remove(%d) %s\n", s->sock,
321 leftover ? leftover->devname : "");
322
323 mutex_lock(&s->ops_mutex);
324 if (!leftover)
325 s->device_count = 0;
326 else
327 s->device_count = 1;
328 mutex_unlock(&s->ops_mutex);
329
330 /* unregister all pcmcia_devices registered with this socket, except leftover */
331 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
332 if (p_dev == leftover)
333 continue;
334
335 mutex_lock(&s->ops_mutex);
336 list_del(&p_dev->socket_device_list);
337 mutex_unlock(&s->ops_mutex);
338
339 dev_dbg(&p_dev->dev, "unregistering device\n");
340 device_unregister(&p_dev->dev);
341 }
342
343 return;
344 }
345
346 static int pcmcia_device_remove(struct device *dev)
347 {
348 struct pcmcia_device *p_dev;
349 struct pcmcia_driver *p_drv;
350 int i;
351
352 p_dev = to_pcmcia_dev(dev);
353 p_drv = to_pcmcia_drv(dev->driver);
354
355 dev_dbg(dev, "removing device\n");
356
357 /* If we're removing the primary module driving a
358 * pseudo multi-function card, we need to unbind
359 * all devices
360 */
361 if ((p_dev->socket->pcmcia_pfc) &&
362 (p_dev->socket->device_count > 0) &&
363 (p_dev->device_no == 0))
364 pcmcia_card_remove(p_dev->socket, p_dev);
365
366 /* detach the "instance" */
367 if (!p_drv)
368 return 0;
369
370 if (p_drv->remove)
371 p_drv->remove(p_dev);
372
373 /* check for proper unloading */
374 if (p_dev->_irq || p_dev->_io || p_dev->_locked)
375 dev_printk(KERN_INFO, dev,
376 "pcmcia: driver %s did not release config properly\n",
377 p_drv->drv.name);
378
379 for (i = 0; i < MAX_WIN; i++)
380 if (p_dev->_win & CLIENT_WIN_REQ(i))
381 dev_printk(KERN_INFO, dev,
382 "pcmcia: driver %s did not release window properly\n",
383 p_drv->drv.name);
384
385 /* references from pcmcia_probe_device */
386 pcmcia_put_dev(p_dev);
387 module_put(p_drv->owner);
388
389 return 0;
390 }
391
392
393 /*
394 * pcmcia_device_query -- determine information about a pcmcia device
395 */
396 static int pcmcia_device_query(struct pcmcia_device *p_dev)
397 {
398 cistpl_manfid_t manf_id;
399 cistpl_funcid_t func_id;
400 cistpl_vers_1_t *vers1;
401 unsigned int i;
402
403 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
404 if (!vers1)
405 return -ENOMEM;
406
407 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL,
408 CISTPL_MANFID, &manf_id)) {
409 mutex_lock(&p_dev->socket->ops_mutex);
410 p_dev->manf_id = manf_id.manf;
411 p_dev->card_id = manf_id.card;
412 p_dev->has_manf_id = 1;
413 p_dev->has_card_id = 1;
414 mutex_unlock(&p_dev->socket->ops_mutex);
415 }
416
417 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
418 CISTPL_FUNCID, &func_id)) {
419 mutex_lock(&p_dev->socket->ops_mutex);
420 p_dev->func_id = func_id.func;
421 p_dev->has_func_id = 1;
422 mutex_unlock(&p_dev->socket->ops_mutex);
423 } else {
424 /* rule of thumb: cards with no FUNCID, but with
425 * common memory device geometry information, are
426 * probably memory cards (from pcmcia-cs) */
427 cistpl_device_geo_t *devgeo;
428
429 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
430 if (!devgeo) {
431 kfree(vers1);
432 return -ENOMEM;
433 }
434 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
435 CISTPL_DEVICE_GEO, devgeo)) {
436 dev_dbg(&p_dev->dev,
437 "mem device geometry probably means "
438 "FUNCID_MEMORY\n");
439 mutex_lock(&p_dev->socket->ops_mutex);
440 p_dev->func_id = CISTPL_FUNCID_MEMORY;
441 p_dev->has_func_id = 1;
442 mutex_unlock(&p_dev->socket->ops_mutex);
443 }
444 kfree(devgeo);
445 }
446
447 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1,
448 vers1)) {
449 mutex_lock(&p_dev->socket->ops_mutex);
450 for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) {
451 char *tmp;
452 unsigned int length;
453 char *new;
454
455 tmp = vers1->str + vers1->ofs[i];
456
457 length = strlen(tmp) + 1;
458 if ((length < 2) || (length > 255))
459 continue;
460
461 new = kmalloc(sizeof(char) * length, GFP_KERNEL);
462 if (!new)
463 continue;
464
465 new = strncpy(new, tmp, length);
466
467 tmp = p_dev->prod_id[i];
468 p_dev->prod_id[i] = new;
469 kfree(tmp);
470 }
471 mutex_unlock(&p_dev->socket->ops_mutex);
472 }
473
474 kfree(vers1);
475 return 0;
476 }
477
478
479 static struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s,
480 unsigned int function)
481 {
482 struct pcmcia_device *p_dev, *tmp_dev;
483 int i;
484
485 s = pcmcia_get_socket(s);
486 if (!s)
487 return NULL;
488
489 pr_debug("adding device to %d, function %d\n", s->sock, function);
490
491 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
492 if (!p_dev)
493 goto err_put;
494
495 mutex_lock(&s->ops_mutex);
496 p_dev->device_no = (s->device_count++);
497 mutex_unlock(&s->ops_mutex);
498
499 /* max of 2 PFC devices */
500 if ((p_dev->device_no >= 2) && (function == 0))
501 goto err_free;
502
503 /* max of 4 devices overall */
504 if (p_dev->device_no >= 4)
505 goto err_free;
506
507 p_dev->socket = s;
508 p_dev->func = function;
509
510 p_dev->dev.bus = &pcmcia_bus_type;
511 p_dev->dev.parent = s->dev.parent;
512 p_dev->dev.release = pcmcia_release_dev;
513 /* by default don't allow DMA */
514 p_dev->dma_mask = DMA_MASK_NONE;
515 p_dev->dev.dma_mask = &p_dev->dma_mask;
516 dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no);
517 if (!dev_name(&p_dev->dev))
518 goto err_free;
519 p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev));
520 if (!p_dev->devname)
521 goto err_free;
522 dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname);
523
524 mutex_lock(&s->ops_mutex);
525
526 /*
527 * p_dev->function_config must be the same for all card functions.
528 * Note that this is serialized by ops_mutex, so that only one
529 * such struct will be created.
530 */
531 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
532 if (p_dev->func == tmp_dev->func) {
533 p_dev->function_config = tmp_dev->function_config;
534 p_dev->io = tmp_dev->io;
535 p_dev->irq = tmp_dev->irq;
536 kref_get(&p_dev->function_config->ref);
537 }
538
539 /* Add to the list in pcmcia_bus_socket */
540 list_add(&p_dev->socket_device_list, &s->devices_list);
541
542 if (pcmcia_setup_irq(p_dev))
543 dev_warn(&p_dev->dev,
544 "IRQ setup failed -- device might not work\n");
545
546 if (!p_dev->function_config) {
547 dev_dbg(&p_dev->dev, "creating config_t\n");
548 p_dev->function_config = kzalloc(sizeof(struct config_t),
549 GFP_KERNEL);
550 if (!p_dev->function_config) {
551 mutex_unlock(&s->ops_mutex);
552 goto err_unreg;
553 }
554 kref_init(&p_dev->function_config->ref);
555 }
556 mutex_unlock(&s->ops_mutex);
557
558 dev_printk(KERN_NOTICE, &p_dev->dev,
559 "pcmcia: registering new device %s (IRQ: %d)\n",
560 p_dev->devname, p_dev->irq);
561
562 pcmcia_device_query(p_dev);
563
564 if (device_register(&p_dev->dev))
565 goto err_unreg;
566
567 return p_dev;
568
569 err_unreg:
570 mutex_lock(&s->ops_mutex);
571 list_del(&p_dev->socket_device_list);
572 mutex_unlock(&s->ops_mutex);
573
574 err_free:
575 mutex_lock(&s->ops_mutex);
576 s->device_count--;
577 mutex_unlock(&s->ops_mutex);
578
579 for (i = 0; i < 4; i++)
580 kfree(p_dev->prod_id[i]);
581 kfree(p_dev->devname);
582 kfree(p_dev);
583 err_put:
584 pcmcia_put_socket(s);
585
586 return NULL;
587 }
588
589
590 static int pcmcia_card_add(struct pcmcia_socket *s)
591 {
592 cistpl_longlink_mfc_t mfc;
593 unsigned int no_funcs, i, no_chains;
594 int ret = -EAGAIN;
595
596 mutex_lock(&s->ops_mutex);
597 if (!(s->resource_setup_done)) {
598 dev_dbg(&s->dev,
599 "no resources available, delaying card_add\n");
600 mutex_unlock(&s->ops_mutex);
601 return -EAGAIN; /* try again, but later... */
602 }
603
604 if (pcmcia_validate_mem(s)) {
605 dev_dbg(&s->dev, "validating mem resources failed, "
606 "delaying card_add\n");
607 mutex_unlock(&s->ops_mutex);
608 return -EAGAIN; /* try again, but later... */
609 }
610 mutex_unlock(&s->ops_mutex);
611
612 ret = pccard_validate_cis(s, &no_chains);
613 if (ret || !no_chains) {
614 dev_dbg(&s->dev, "invalid CIS or invalid resources\n");
615 return -ENODEV;
616 }
617
618 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
619 no_funcs = mfc.nfn;
620 else
621 no_funcs = 1;
622 s->functions = no_funcs;
623
624 for (i = 0; i < no_funcs; i++)
625 pcmcia_device_add(s, i);
626
627 return ret;
628 }
629
630
631 static int pcmcia_requery_callback(struct device *dev, void * _data)
632 {
633 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
634 if (!p_dev->dev.driver) {
635 dev_dbg(dev, "update device information\n");
636 pcmcia_device_query(p_dev);
637 }
638
639 return 0;
640 }
641
642
643 static void pcmcia_requery(struct pcmcia_socket *s)
644 {
645 int has_pfc;
646
647 if (s->functions == 0) {
648 pcmcia_card_add(s);
649 return;
650 }
651
652 /* some device information might have changed because of a CIS
653 * update or because we can finally read it correctly... so
654 * determine it again, overwriting old values if necessary. */
655 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery_callback);
656
657 /* if the CIS changed, we need to check whether the number of
658 * functions changed. */
659 if (s->fake_cis) {
660 int old_funcs, new_funcs;
661 cistpl_longlink_mfc_t mfc;
662
663 /* does this cis override add or remove functions? */
664 old_funcs = s->functions;
665
666 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
667 &mfc))
668 new_funcs = mfc.nfn;
669 else
670 new_funcs = 1;
671 if (old_funcs != new_funcs) {
672 /* we need to re-start */
673 pcmcia_card_remove(s, NULL);
674 s->functions = 0;
675 pcmcia_card_add(s);
676 }
677 }
678
679 /* If the PCMCIA device consists of two pseudo devices,
680 * call pcmcia_device_add() -- which will fail if both
681 * devices are already registered. */
682 mutex_lock(&s->ops_mutex);
683 has_pfc = s->pcmcia_pfc;
684 mutex_unlock(&s->ops_mutex);
685 if (has_pfc)
686 pcmcia_device_add(s, 0);
687
688 /* we re-scan all devices, not just the ones connected to this
689 * socket. This does not matter, though. */
690 if (bus_rescan_devices(&pcmcia_bus_type))
691 dev_warn(&s->dev, "rescanning the bus failed\n");
692 }
693
694
695 #ifdef CONFIG_PCMCIA_LOAD_CIS
696
697 /**
698 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
699 * @dev: the pcmcia device which needs a CIS override
700 * @filename: requested filename in /lib/firmware/
701 *
702 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
703 * the one provided by the card is broken. The firmware files reside in
704 * /lib/firmware/ in userspace.
705 */
706 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
707 {
708 struct pcmcia_socket *s = dev->socket;
709 const struct firmware *fw;
710 int ret = -ENOMEM;
711 cistpl_longlink_mfc_t mfc;
712 int old_funcs, new_funcs = 1;
713
714 if (!filename)
715 return -EINVAL;
716
717 dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename);
718
719 if (request_firmware(&fw, filename, &dev->dev) == 0) {
720 if (fw->size >= CISTPL_MAX_CIS_SIZE) {
721 ret = -EINVAL;
722 dev_printk(KERN_ERR, &dev->dev,
723 "pcmcia: CIS override is too big\n");
724 goto release;
725 }
726
727 if (!pcmcia_replace_cis(s, fw->data, fw->size))
728 ret = 0;
729 else {
730 dev_printk(KERN_ERR, &dev->dev,
731 "pcmcia: CIS override failed\n");
732 goto release;
733 }
734
735 /* we need to re-start if the number of functions changed */
736 old_funcs = s->functions;
737 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
738 &mfc))
739 new_funcs = mfc.nfn;
740
741 if (old_funcs != new_funcs)
742 ret = -EBUSY;
743
744 /* update information */
745 pcmcia_device_query(dev);
746
747 /* requery (as number of functions might have changed) */
748 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
749 }
750 release:
751 release_firmware(fw);
752
753 return ret;
754 }
755
756 #else /* !CONFIG_PCMCIA_LOAD_CIS */
757
758 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
759 {
760 return -ENODEV;
761 }
762
763 #endif
764
765
766 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
767 struct pcmcia_device_id *did)
768 {
769 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
770 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
771 return 0;
772 }
773
774 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
775 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
776 return 0;
777 }
778
779 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
780 if (dev->func != did->function)
781 return 0;
782 }
783
784 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
785 if (!dev->prod_id[0])
786 return 0;
787 if (strcmp(did->prod_id[0], dev->prod_id[0]))
788 return 0;
789 }
790
791 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
792 if (!dev->prod_id[1])
793 return 0;
794 if (strcmp(did->prod_id[1], dev->prod_id[1]))
795 return 0;
796 }
797
798 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
799 if (!dev->prod_id[2])
800 return 0;
801 if (strcmp(did->prod_id[2], dev->prod_id[2]))
802 return 0;
803 }
804
805 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
806 if (!dev->prod_id[3])
807 return 0;
808 if (strcmp(did->prod_id[3], dev->prod_id[3]))
809 return 0;
810 }
811
812 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
813 dev_dbg(&dev->dev, "this is a pseudo-multi-function device\n");
814 mutex_lock(&dev->socket->ops_mutex);
815 dev->socket->pcmcia_pfc = 1;
816 mutex_unlock(&dev->socket->ops_mutex);
817 if (dev->device_no != did->device_no)
818 return 0;
819 }
820
821 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
822 int ret;
823
824 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
825 return 0;
826
827 /* if this is a pseudo-multi-function device,
828 * we need explicit matches */
829 if (dev->socket->pcmcia_pfc)
830 return 0;
831 if (dev->device_no)
832 return 0;
833
834 /* also, FUNC_ID matching needs to be activated by userspace
835 * after it has re-checked that there is no possible module
836 * with a prod_id/manf_id/card_id match.
837 */
838 mutex_lock(&dev->socket->ops_mutex);
839 ret = dev->allow_func_id_match;
840 mutex_unlock(&dev->socket->ops_mutex);
841
842 if (!ret) {
843 dev_dbg(&dev->dev,
844 "skipping FUNC_ID match until userspace ACK\n");
845 return 0;
846 }
847 }
848
849 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
850 dev_dbg(&dev->dev, "device needs a fake CIS\n");
851 if (!dev->socket->fake_cis)
852 if (pcmcia_load_firmware(dev, did->cisfile))
853 return 0;
854 }
855
856 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
857 int i;
858 for (i = 0; i < 4; i++)
859 if (dev->prod_id[i])
860 return 0;
861 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
862 return 0;
863 }
864
865 return 1;
866 }
867
868
869 static int pcmcia_bus_match(struct device *dev, struct device_driver *drv)
870 {
871 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
872 struct pcmcia_driver *p_drv = to_pcmcia_drv(drv);
873 struct pcmcia_device_id *did = p_drv->id_table;
874 struct pcmcia_dynid *dynid;
875
876 /* match dynamic devices first */
877 mutex_lock(&p_drv->dynids.lock);
878 list_for_each_entry(dynid, &p_drv->dynids.list, node) {
879 dev_dbg(dev, "trying to match to %s\n", drv->name);
880 if (pcmcia_devmatch(p_dev, &dynid->id)) {
881 dev_dbg(dev, "matched to %s\n", drv->name);
882 mutex_unlock(&p_drv->dynids.lock);
883 return 1;
884 }
885 }
886 mutex_unlock(&p_drv->dynids.lock);
887
888 while (did && did->match_flags) {
889 dev_dbg(dev, "trying to match to %s\n", drv->name);
890 if (pcmcia_devmatch(p_dev, did)) {
891 dev_dbg(dev, "matched to %s\n", drv->name);
892 return 1;
893 }
894 did++;
895 }
896
897 return 0;
898 }
899
900 #ifdef CONFIG_HOTPLUG
901
902 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
903 {
904 struct pcmcia_device *p_dev;
905 int i;
906 u32 hash[4] = { 0, 0, 0, 0};
907
908 if (!dev)
909 return -ENODEV;
910
911 p_dev = to_pcmcia_dev(dev);
912
913 /* calculate hashes */
914 for (i = 0; i < 4; i++) {
915 if (!p_dev->prod_id[i])
916 continue;
917 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
918 }
919
920 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock))
921 return -ENOMEM;
922
923 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no))
924 return -ENOMEM;
925
926 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
927 "pa%08Xpb%08Xpc%08Xpd%08X",
928 p_dev->has_manf_id ? p_dev->manf_id : 0,
929 p_dev->has_card_id ? p_dev->card_id : 0,
930 p_dev->has_func_id ? p_dev->func_id : 0,
931 p_dev->func,
932 p_dev->device_no,
933 hash[0],
934 hash[1],
935 hash[2],
936 hash[3]))
937 return -ENOMEM;
938
939 return 0;
940 }
941
942 #else
943
944 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
945 {
946 return -ENODEV;
947 }
948
949 #endif
950
951 /************************ runtime PM support ***************************/
952
953 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state);
954 static int pcmcia_dev_resume(struct device *dev);
955
956 static int runtime_suspend(struct device *dev)
957 {
958 int rc;
959
960 device_lock(dev);
961 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND);
962 device_unlock(dev);
963 return rc;
964 }
965
966 static int runtime_resume(struct device *dev)
967 {
968 int rc;
969
970 device_lock(dev);
971 rc = pcmcia_dev_resume(dev);
972 device_unlock(dev);
973 return rc;
974 }
975
976 /************************ per-device sysfs output ***************************/
977
978 #define pcmcia_device_attr(field, test, format) \
979 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
980 { \
981 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
982 return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \
983 }
984
985 #define pcmcia_device_stringattr(name, field) \
986 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
987 { \
988 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
989 return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \
990 }
991
992 pcmcia_device_attr(func, socket, "0x%02x\n");
993 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
994 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
995 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
996 pcmcia_device_stringattr(prod_id1, prod_id[0]);
997 pcmcia_device_stringattr(prod_id2, prod_id[1]);
998 pcmcia_device_stringattr(prod_id3, prod_id[2]);
999 pcmcia_device_stringattr(prod_id4, prod_id[3]);
1000
1001
1002 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf)
1003 {
1004 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1005
1006 if (p_dev->suspended)
1007 return sprintf(buf, "off\n");
1008 else
1009 return sprintf(buf, "on\n");
1010 }
1011
1012 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr,
1013 const char *buf, size_t count)
1014 {
1015 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1016 int ret = 0;
1017
1018 if (!count)
1019 return -EINVAL;
1020
1021 if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
1022 ret = runtime_suspend(dev);
1023 else if (p_dev->suspended && !strncmp(buf, "on", 2))
1024 ret = runtime_resume(dev);
1025
1026 return ret ? ret : count;
1027 }
1028
1029
1030 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1031 {
1032 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1033 int i;
1034 u32 hash[4] = { 0, 0, 0, 0};
1035
1036 /* calculate hashes */
1037 for (i = 0; i < 4; i++) {
1038 if (!p_dev->prod_id[i])
1039 continue;
1040 hash[i] = crc32(0, p_dev->prod_id[i],
1041 strlen(p_dev->prod_id[i]));
1042 }
1043 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1044 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1045 p_dev->has_manf_id ? p_dev->manf_id : 0,
1046 p_dev->has_card_id ? p_dev->card_id : 0,
1047 p_dev->has_func_id ? p_dev->func_id : 0,
1048 p_dev->func, p_dev->device_no,
1049 hash[0], hash[1], hash[2], hash[3]);
1050 }
1051
1052 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
1053 struct device_attribute *attr, const char *buf, size_t count)
1054 {
1055 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1056
1057 if (!count)
1058 return -EINVAL;
1059
1060 mutex_lock(&p_dev->socket->ops_mutex);
1061 p_dev->allow_func_id_match = 1;
1062 mutex_unlock(&p_dev->socket->ops_mutex);
1063 pcmcia_parse_uevents(p_dev->socket, PCMCIA_UEVENT_REQUERY);
1064
1065 return count;
1066 }
1067
1068 static struct device_attribute pcmcia_dev_attrs[] = {
1069 __ATTR(function, 0444, func_show, NULL),
1070 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state),
1071 __ATTR_RO(func_id),
1072 __ATTR_RO(manf_id),
1073 __ATTR_RO(card_id),
1074 __ATTR_RO(prod_id1),
1075 __ATTR_RO(prod_id2),
1076 __ATTR_RO(prod_id3),
1077 __ATTR_RO(prod_id4),
1078 __ATTR_RO(modalias),
1079 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
1080 __ATTR_NULL,
1081 };
1082
1083 /* PM support, also needed for reset */
1084
1085 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state)
1086 {
1087 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1088 struct pcmcia_driver *p_drv = NULL;
1089 int ret = 0;
1090
1091 mutex_lock(&p_dev->socket->ops_mutex);
1092 if (p_dev->suspended) {
1093 mutex_unlock(&p_dev->socket->ops_mutex);
1094 return 0;
1095 }
1096 p_dev->suspended = 1;
1097 mutex_unlock(&p_dev->socket->ops_mutex);
1098
1099 dev_dbg(dev, "suspending\n");
1100
1101 if (dev->driver)
1102 p_drv = to_pcmcia_drv(dev->driver);
1103
1104 if (!p_drv)
1105 goto out;
1106
1107 if (p_drv->suspend) {
1108 ret = p_drv->suspend(p_dev);
1109 if (ret) {
1110 dev_printk(KERN_ERR, dev,
1111 "pcmcia: device %s (driver %s) did "
1112 "not want to go to sleep (%d)\n",
1113 p_dev->devname, p_drv->drv.name, ret);
1114 mutex_lock(&p_dev->socket->ops_mutex);
1115 p_dev->suspended = 0;
1116 mutex_unlock(&p_dev->socket->ops_mutex);
1117 goto out;
1118 }
1119 }
1120
1121 if (p_dev->device_no == p_dev->func) {
1122 dev_dbg(dev, "releasing configuration\n");
1123 pcmcia_release_configuration(p_dev);
1124 }
1125
1126 out:
1127 return ret;
1128 }
1129
1130
1131 static int pcmcia_dev_resume(struct device *dev)
1132 {
1133 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1134 struct pcmcia_driver *p_drv = NULL;
1135 int ret = 0;
1136
1137 mutex_lock(&p_dev->socket->ops_mutex);
1138 if (!p_dev->suspended) {
1139 mutex_unlock(&p_dev->socket->ops_mutex);
1140 return 0;
1141 }
1142 p_dev->suspended = 0;
1143 mutex_unlock(&p_dev->socket->ops_mutex);
1144
1145 dev_dbg(dev, "resuming\n");
1146
1147 if (dev->driver)
1148 p_drv = to_pcmcia_drv(dev->driver);
1149
1150 if (!p_drv)
1151 goto out;
1152
1153 if (p_dev->device_no == p_dev->func) {
1154 dev_dbg(dev, "requesting configuration\n");
1155 ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
1156 if (ret)
1157 goto out;
1158 }
1159
1160 if (p_drv->resume)
1161 ret = p_drv->resume(p_dev);
1162
1163 out:
1164 return ret;
1165 }
1166
1167
1168 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
1169 {
1170 struct pcmcia_socket *skt = _data;
1171 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1172
1173 if (p_dev->socket != skt || p_dev->suspended)
1174 return 0;
1175
1176 return runtime_suspend(dev);
1177 }
1178
1179 static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
1180 {
1181 struct pcmcia_socket *skt = _data;
1182 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1183
1184 if (p_dev->socket != skt || !p_dev->suspended)
1185 return 0;
1186
1187 runtime_resume(dev);
1188
1189 return 0;
1190 }
1191
1192 static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1193 {
1194 dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock);
1195 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1196 return 0;
1197 }
1198
1199 static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1200 {
1201 dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock);
1202 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1203 pcmcia_bus_suspend_callback)) {
1204 pcmcia_bus_resume(skt);
1205 return -EIO;
1206 }
1207 return 0;
1208 }
1209
1210 static int pcmcia_bus_remove(struct pcmcia_socket *skt)
1211 {
1212 atomic_set(&skt->present, 0);
1213 pcmcia_card_remove(skt, NULL);
1214
1215 mutex_lock(&skt->ops_mutex);
1216 destroy_cis_cache(skt);
1217 pcmcia_cleanup_irq(skt);
1218 mutex_unlock(&skt->ops_mutex);
1219
1220 return 0;
1221 }
1222
1223 static int pcmcia_bus_add(struct pcmcia_socket *skt)
1224 {
1225 atomic_set(&skt->present, 1);
1226
1227 mutex_lock(&skt->ops_mutex);
1228 skt->pcmcia_pfc = 0;
1229 destroy_cis_cache(skt); /* to be on the safe side... */
1230 mutex_unlock(&skt->ops_mutex);
1231
1232 pcmcia_card_add(skt);
1233
1234 return 0;
1235 }
1236
1237 static int pcmcia_bus_early_resume(struct pcmcia_socket *skt)
1238 {
1239 if (!verify_cis_cache(skt)) {
1240 pcmcia_put_socket(skt);
1241 return 0;
1242 }
1243
1244 dev_dbg(&skt->dev, "cis mismatch - different card\n");
1245
1246 /* first, remove the card */
1247 pcmcia_bus_remove(skt);
1248
1249 mutex_lock(&skt->ops_mutex);
1250 destroy_cis_cache(skt);
1251 kfree(skt->fake_cis);
1252 skt->fake_cis = NULL;
1253 skt->functions = 0;
1254 mutex_unlock(&skt->ops_mutex);
1255
1256 /* now, add the new card */
1257 pcmcia_bus_add(skt);
1258 return 0;
1259 }
1260
1261
1262 /*
1263 * NOTE: This is racy. There's no guarantee the card will still be
1264 * physically present, even if the call to this function returns
1265 * non-NULL. Furthermore, the device driver most likely is unbound
1266 * almost immediately, so the timeframe where pcmcia_dev_present
1267 * returns NULL is probably really really small.
1268 */
1269 struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev)
1270 {
1271 struct pcmcia_device *p_dev;
1272 struct pcmcia_device *ret = NULL;
1273
1274 p_dev = pcmcia_get_dev(_p_dev);
1275 if (!p_dev)
1276 return NULL;
1277
1278 if (atomic_read(&p_dev->socket->present) != 0)
1279 ret = p_dev;
1280
1281 pcmcia_put_dev(p_dev);
1282 return ret;
1283 }
1284 EXPORT_SYMBOL(pcmcia_dev_present);
1285
1286
1287 static struct pcmcia_callback pcmcia_bus_callback = {
1288 .owner = THIS_MODULE,
1289 .add = pcmcia_bus_add,
1290 .remove = pcmcia_bus_remove,
1291 .requery = pcmcia_requery,
1292 .validate = pccard_validate_cis,
1293 .suspend = pcmcia_bus_suspend,
1294 .early_resume = pcmcia_bus_early_resume,
1295 .resume = pcmcia_bus_resume,
1296 };
1297
1298 static int __devinit pcmcia_bus_add_socket(struct device *dev,
1299 struct class_interface *class_intf)
1300 {
1301 struct pcmcia_socket *socket = dev_get_drvdata(dev);
1302 int ret;
1303
1304 socket = pcmcia_get_socket(socket);
1305 if (!socket) {
1306 dev_printk(KERN_ERR, dev,
1307 "PCMCIA obtaining reference to socket failed\n");
1308 return -ENODEV;
1309 }
1310
1311 ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
1312 if (ret) {
1313 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
1314 pcmcia_put_socket(socket);
1315 return ret;
1316 }
1317
1318 INIT_LIST_HEAD(&socket->devices_list);
1319 socket->pcmcia_pfc = 0;
1320 socket->device_count = 0;
1321 atomic_set(&socket->present, 0);
1322
1323 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1324 if (ret) {
1325 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
1326 pcmcia_put_socket(socket);
1327 return ret;
1328 }
1329
1330 return 0;
1331 }
1332
1333 static void pcmcia_bus_remove_socket(struct device *dev,
1334 struct class_interface *class_intf)
1335 {
1336 struct pcmcia_socket *socket = dev_get_drvdata(dev);
1337
1338 if (!socket)
1339 return;
1340
1341 pccard_register_pcmcia(socket, NULL);
1342
1343 /* unregister any unbound devices */
1344 mutex_lock(&socket->skt_mutex);
1345 pcmcia_card_remove(socket, NULL);
1346 release_cis_mem(socket);
1347 mutex_unlock(&socket->skt_mutex);
1348
1349 sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr);
1350
1351 pcmcia_put_socket(socket);
1352
1353 return;
1354 }
1355
1356
1357 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1358 static struct class_interface pcmcia_bus_interface __refdata = {
1359 .class = &pcmcia_socket_class,
1360 .add_dev = &pcmcia_bus_add_socket,
1361 .remove_dev = &pcmcia_bus_remove_socket,
1362 };
1363
1364
1365 struct bus_type pcmcia_bus_type = {
1366 .name = "pcmcia",
1367 .uevent = pcmcia_bus_uevent,
1368 .match = pcmcia_bus_match,
1369 .dev_attrs = pcmcia_dev_attrs,
1370 .probe = pcmcia_device_probe,
1371 .remove = pcmcia_device_remove,
1372 .suspend = pcmcia_dev_suspend,
1373 .resume = pcmcia_dev_resume,
1374 };
1375
1376
1377 static int __init init_pcmcia_bus(void)
1378 {
1379 int ret;
1380
1381 ret = bus_register(&pcmcia_bus_type);
1382 if (ret < 0) {
1383 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret);
1384 return ret;
1385 }
1386 ret = class_interface_register(&pcmcia_bus_interface);
1387 if (ret < 0) {
1388 printk(KERN_WARNING
1389 "pcmcia: class_interface_register error: %d\n", ret);
1390 bus_unregister(&pcmcia_bus_type);
1391 return ret;
1392 }
1393
1394 return 0;
1395 }
1396 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1397 * pcmcia_socket_class is already registered */
1398
1399
1400 static void __exit exit_pcmcia_bus(void)
1401 {
1402 class_interface_unregister(&pcmcia_bus_interface);
1403
1404 bus_unregister(&pcmcia_bus_type);
1405 }
1406 module_exit(exit_pcmcia_bus);
1407
1408
1409 MODULE_ALIAS("ds");
CJK support for tty framebuffer vt