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[PATCH] pcmcia: do not set dev_node to NULL too early
[deliverable/linux.git] / drivers / pcmcia / ds.c
CommitLineData
1da177e4
LT		 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
8661bb5b 13 * (C) 2003 - 2006 Dominik Brodowski
1da177e4
LT		 14 */
15
3b659fb8 16#include <linux/kernel.h>
1da177e4 17#include <linux/module.h>
1da177e4 18#include <linux/init.h>
1da177e4 19#include <linux/errno.h>
1da177e4
LT		 20#include <linux/list.h>
21#include <linux/delay.h>
1da177e4 22#include <linux/workqueue.h>
840c2ac5 23#include <linux/crc32.h>
daa9517d 24#include <linux/firmware.h>
360b65b9 25#include <linux/kref.h>
1da177e4 26
1da177e4 27#define IN_CARD_SERVICES
1da177e4
LT		 28#include <pcmcia/cs_types.h>
29#include <pcmcia/cs.h>
1da177e4
LT		 30#include <pcmcia/cistpl.h>
31#include <pcmcia/ds.h>
32#include <pcmcia/ss.h>
33
34#include "cs_internal.h"
e7a480d2 35#include "ds_internal.h"
1da177e4
LT		 36
37/*====================================================================*/
38
39/* Module parameters */
40
41MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
42MODULE_DESCRIPTION("PCMCIA Driver Services");
43MODULE_LICENSE("GPL");
44
45#ifdef DEBUG
e7a480d2 46int ds_pc_debug;
1da177e4
LT		 47
48module_param_named(pc_debug, ds_pc_debug, int, 0644);
49
50#define ds_dbg(lvl, fmt, arg...) do { \
51 if (ds_pc_debug > (lvl)) \
52 printk(KERN_DEBUG "ds: " fmt , ## arg); \
53} while (0)
54#else
55#define ds_dbg(lvl, fmt, arg...) do { } while (0)
56#endif
57
e7a480d2 58spinlock_t pcmcia_dev_list_lock;
1da177e4 59
1da177e4
LT		 60/*====================================================================*/
61
62/* code which was in cs.c before */
63
64/* String tables for error messages */
65
66typedef struct lookup_t {
67 int key;
68 char *msg;
69} lookup_t;
70
71static const lookup_t error_table[] = {
72 { CS_SUCCESS, "Operation succeeded" },
73 { CS_BAD_ADAPTER, "Bad adapter" },
74 { CS_BAD_ATTRIBUTE, "Bad attribute", },
75 { CS_BAD_BASE, "Bad base address" },
76 { CS_BAD_EDC, "Bad EDC" },
77 { CS_BAD_IRQ, "Bad IRQ" },
78 { CS_BAD_OFFSET, "Bad offset" },
79 { CS_BAD_PAGE, "Bad page number" },
80 { CS_READ_FAILURE, "Read failure" },
81 { CS_BAD_SIZE, "Bad size" },
82 { CS_BAD_SOCKET, "Bad socket" },
83 { CS_BAD_TYPE, "Bad type" },
84 { CS_BAD_VCC, "Bad Vcc" },
85 { CS_BAD_VPP, "Bad Vpp" },
86 { CS_BAD_WINDOW, "Bad window" },
87 { CS_WRITE_FAILURE, "Write failure" },
88 { CS_NO_CARD, "No card present" },
89 { CS_UNSUPPORTED_FUNCTION, "Usupported function" },
90 { CS_UNSUPPORTED_MODE, "Unsupported mode" },
91 { CS_BAD_SPEED, "Bad speed" },
92 { CS_BUSY, "Resource busy" },
93 { CS_GENERAL_FAILURE, "General failure" },
94 { CS_WRITE_PROTECTED, "Write protected" },
95 { CS_BAD_ARG_LENGTH, "Bad argument length" },
96 { CS_BAD_ARGS, "Bad arguments" },
97 { CS_CONFIGURATION_LOCKED, "Configuration locked" },
98 { CS_IN_USE, "Resource in use" },
99 { CS_NO_MORE_ITEMS, "No more items" },
100 { CS_OUT_OF_RESOURCE, "Out of resource" },
101 { CS_BAD_HANDLE, "Bad handle" },
102 { CS_BAD_TUPLE, "Bad CIS tuple" }
103};
104
105
106static const lookup_t service_table[] = {
107 { AccessConfigurationRegister, "AccessConfigurationRegister" },
108 { AddSocketServices, "AddSocketServices" },
109 { AdjustResourceInfo, "AdjustResourceInfo" },
110 { CheckEraseQueue, "CheckEraseQueue" },
111 { CloseMemory, "CloseMemory" },
112 { DeregisterClient, "DeregisterClient" },
113 { DeregisterEraseQueue, "DeregisterEraseQueue" },
114 { GetCardServicesInfo, "GetCardServicesInfo" },
115 { GetClientInfo, "GetClientInfo" },
116 { GetConfigurationInfo, "GetConfigurationInfo" },
117 { GetEventMask, "GetEventMask" },
118 { GetFirstClient, "GetFirstClient" },
119 { GetFirstRegion, "GetFirstRegion" },
120 { GetFirstTuple, "GetFirstTuple" },
121 { GetNextClient, "GetNextClient" },
122 { GetNextRegion, "GetNextRegion" },
123 { GetNextTuple, "GetNextTuple" },
124 { GetStatus, "GetStatus" },
125 { GetTupleData, "GetTupleData" },
126 { MapMemPage, "MapMemPage" },
127 { ModifyConfiguration, "ModifyConfiguration" },
128 { ModifyWindow, "ModifyWindow" },
129 { OpenMemory, "OpenMemory" },
130 { ParseTuple, "ParseTuple" },
131 { ReadMemory, "ReadMemory" },
132 { RegisterClient, "RegisterClient" },
133 { RegisterEraseQueue, "RegisterEraseQueue" },
134 { RegisterMTD, "RegisterMTD" },
135 { ReleaseConfiguration, "ReleaseConfiguration" },
136 { ReleaseIO, "ReleaseIO" },
137 { ReleaseIRQ, "ReleaseIRQ" },
138 { ReleaseWindow, "ReleaseWindow" },
139 { RequestConfiguration, "RequestConfiguration" },
140 { RequestIO, "RequestIO" },
141 { RequestIRQ, "RequestIRQ" },
142 { RequestSocketMask, "RequestSocketMask" },
143 { RequestWindow, "RequestWindow" },
144 { ResetCard, "ResetCard" },
145 { SetEventMask, "SetEventMask" },
146 { ValidateCIS, "ValidateCIS" },
147 { WriteMemory, "WriteMemory" },
148 { BindDevice, "BindDevice" },
149 { BindMTD, "BindMTD" },
150 { ReportError, "ReportError" },
151 { SuspendCard, "SuspendCard" },
152 { ResumeCard, "ResumeCard" },
153 { EjectCard, "EjectCard" },
154 { InsertCard, "InsertCard" },
155 { ReplaceCIS, "ReplaceCIS" }
156};
157
158
2bc5a9bd 159static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err)
1da177e4
LT		 160{
161 int i;
162 char *serv;
163
2bc5a9bd 164 if (!p_dev)
1da177e4 165 printk(KERN_NOTICE);
2bc5a9bd 166 else
1da177e4 167 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
1da177e4
LT		 168
169 for (i = 0; i < ARRAY_SIZE(service_table); i++)
170 if (service_table[i].key == err->func)
171 break;
172 if (i < ARRAY_SIZE(service_table))
173 serv = service_table[i].msg;
174 else
175 serv = "Unknown service number";
176
177 for (i = 0; i < ARRAY_SIZE(error_table); i++)
178 if (error_table[i].key == err->retcode)
179 break;
180 if (i < ARRAY_SIZE(error_table))
181 printk("%s: %s\n", serv, error_table[i].msg);
182 else
183 printk("%s: Unknown error code %#x\n", serv, err->retcode);
184
185 return CS_SUCCESS;
186} /* report_error */
1da177e4
LT		 187
188/* end of code which was in cs.c before */
189
190/*======================================================================*/
191
2bc5a9bd 192void cs_error(struct pcmcia_device *p_dev, int func, int ret)
1da177e4
LT		 193{
194 error_info_t err = { func, ret };
2bc5a9bd 195 pcmcia_report_error(p_dev, &err);
1da177e4
LT		 196}
197EXPORT_SYMBOL(cs_error);
198
23a83bfe
DB		 199
200static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
201{
202 struct pcmcia_device_id *did = p_drv->id_table;
203 unsigned int i;
204 u32 hash;
205
f8cfa618 206 if (!p_drv->probe || !p_drv->remove)
ba5bb6b5
PR		 207 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
208 "function\n", p_drv->drv.name);
1e212f36 209
23a83bfe
DB		 210 while (did && did->match_flags) {
211 for (i=0; i<4; i++) {
212 if (!did->prod_id[i])
213 continue;
214
215 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
216 if (hash == did->prod_id_hash[i])
217 continue;
218
219 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
220 "product string \"%s\": is 0x%x, should "
221 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
222 did->prod_id_hash[i], hash);
5085cb26
DB		 223 printk(KERN_DEBUG "pcmcia: see "
224 "Documentation/pcmcia/devicetable.txt for "
225 "details\n");
23a83bfe
DB		 226 }
227 did++;
228 }
229
230 return;
231}
232
daa9517d
DB		 233
234#ifdef CONFIG_PCMCIA_LOAD_CIS
235
236/**
237 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
238 * @dev - the pcmcia device which needs a CIS override
90ff8700 239 * @filename - requested filename in /lib/firmware/
daa9517d
DB		 240 *
241 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
242 * the one provided by the card is broken. The firmware files reside in
90ff8700 243 * /lib/firmware/ in userspace.
daa9517d
DB		 244 */
245static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
246{
247 struct pcmcia_socket *s = dev->socket;
248 const struct firmware *fw;
249 char path[20];
250 int ret=-ENOMEM;
251 cisdump_t *cis;
252
253 if (!filename)
254 return -EINVAL;
255
256 ds_dbg(1, "trying to load firmware %s\n", filename);
257
258 if (strlen(filename) > 14)
259 return -EINVAL;
260
261 snprintf(path, 20, "%s", filename);
262
263 if (request_firmware(&fw, path, &dev->dev) == 0) {
264 if (fw->size >= CISTPL_MAX_CIS_SIZE)
265 goto release;
266
8084b372 267 cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL);
daa9517d
DB		 268 if (!cis)
269 goto release;
270
daa9517d
DB		 271 cis->Length = fw->size + 1;
272 memcpy(cis->Data, fw->data, fw->size);
273
274 if (!pcmcia_replace_cis(s, cis))
275 ret = 0;
276 }
277 release:
278 release_firmware(fw);
279
280 return (ret);
281}
282
283#else /* !CONFIG_PCMCIA_LOAD_CIS */
284
285static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
286{
287 return -ENODEV;
288}
289
290#endif
291
292
1da177e4
LT		 293/*======================================================================*/
294
1da177e4 295
1da177e4
LT		 296/**
297 * pcmcia_register_driver - register a PCMCIA driver with the bus core
298 *
299 * Registers a PCMCIA driver with the PCMCIA bus core.
300 */
301static int pcmcia_device_probe(struct device *dev);
302static int pcmcia_device_remove(struct device * dev);
303
304int pcmcia_register_driver(struct pcmcia_driver *driver)
305{
306 if (!driver)
307 return -EINVAL;
308
23a83bfe
DB		 309 pcmcia_check_driver(driver);
310
1da177e4
LT		 311 /* initialize common fields */
312 driver->drv.bus = &pcmcia_bus_type;
313 driver->drv.owner = driver->owner;
1da177e4
LT		 314
315 return driver_register(&driver->drv);
316}
317EXPORT_SYMBOL(pcmcia_register_driver);
318
319/**
320 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
321 */
322void pcmcia_unregister_driver(struct pcmcia_driver *driver)
323{
324 driver_unregister(&driver->drv);
325}
326EXPORT_SYMBOL(pcmcia_unregister_driver);
327
1da177e4
LT		 328
329/* pcmcia_device handling */
330
e7a480d2 331struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
1da177e4
LT		 332{
333 struct device *tmp_dev;
334 tmp_dev = get_device(&p_dev->dev);
335 if (!tmp_dev)
336 return NULL;
337 return to_pcmcia_dev(tmp_dev);
338}
339
e7a480d2 340void pcmcia_put_dev(struct pcmcia_device *p_dev)
1da177e4
LT		 341{
342 if (p_dev)
343 put_device(&p_dev->dev);
344}
345
360b65b9
DB		 346static void pcmcia_release_function(struct kref *ref)
347{
348 struct config_t *c = container_of(ref, struct config_t, ref);
349 kfree(c);
350}
351
1da177e4
LT		 352static void pcmcia_release_dev(struct device *dev)
353{
354 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
355 ds_dbg(1, "releasing dev %p\n", p_dev);
dc109497 356 pcmcia_put_socket(p_dev->socket);
bd65a685 357 kfree(p_dev->devname);
360b65b9 358 kref_put(&p_dev->function_config->ref, pcmcia_release_function);
1da177e4
LT		 359 kfree(p_dev);
360}
361
82d56e6d
DB		 362static void pcmcia_add_pseudo_device(struct pcmcia_socket *s)
363{
364 if (!s->pcmcia_state.device_add_pending) {
365 s->pcmcia_state.device_add_pending = 1;
366 schedule_work(&s->device_add);
367 }
368 return;
369}
1da177e4
LT		 370
371static int pcmcia_device_probe(struct device * dev)
372{
373 struct pcmcia_device *p_dev;
374 struct pcmcia_driver *p_drv;
82d56e6d 375 struct pcmcia_device_id *did;
f8cfa618 376 struct pcmcia_socket *s;
1da177e4
LT		 377 int ret = 0;
378
379 dev = get_device(dev);
380 if (!dev)
381 return -ENODEV;
382
383 p_dev = to_pcmcia_dev(dev);
384 p_drv = to_pcmcia_drv(dev->driver);
f8cfa618 385 s = p_dev->socket;
1da177e4 386
360b65b9
DB		 387 if ((!p_drv->probe) || (!p_dev->function_config) ||
388 (!try_module_get(p_drv->owner))) {
1da177e4
LT		 389 ret = -EINVAL;
390 goto put_dev;
391 }
392
f8cfa618 393 ret = p_drv->probe(p_dev);
82d56e6d
DB		 394 if (ret)
395 goto put_module;
396
397 /* handle pseudo multifunction devices:
398 * there are at most two pseudo multifunction devices.
399 * if we're matching against the first, schedule a
400 * call which will then check whether there are two
401 * pseudo devices, and if not, add the second one.
402 */
403 did = (struct pcmcia_device_id *) p_dev->dev.driver_data;
4ceadbf5 404 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
82d56e6d
DB		 405 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
406 pcmcia_add_pseudo_device(p_dev->socket);
f8cfa618
DB		 407
408 put_module:
1da177e4
LT		 409 if (ret)
410 module_put(p_drv->owner);
411 put_dev:
f8cfa618 412 if (ret)
1da177e4
LT		 413 put_device(dev);
414 return (ret);
415}
416
417
d6ff5a85
DB		 418/*
419 * Removes a PCMCIA card from the device tree and socket list.
420 */
421static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
422{
423 struct pcmcia_device *p_dev;
424 struct pcmcia_device *tmp;
425 unsigned long flags;
426
427 ds_dbg(2, "unbind_request(%d)\n", s->sock);
428
429
430 if (!leftover)
431 s->device_count = 0;
432 else
433 s->device_count = 1;
434
435 /* unregister all pcmcia_devices registered with this socket, except leftover */
436 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
437 if (p_dev == leftover)
438 continue;
439
440 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
441 list_del(&p_dev->socket_device_list);
442 p_dev->_removed=1;
443 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
444
445 device_unregister(&p_dev->dev);
446 }
447
448 return;
449}
450
451
1da177e4
LT		 452static int pcmcia_device_remove(struct device * dev)
453{
454 struct pcmcia_device *p_dev;
455 struct pcmcia_driver *p_drv;
d6ff5a85 456 struct pcmcia_device_id *did;
cc3b4866 457 int i;
1da177e4 458
1da177e4
LT		 459 p_dev = to_pcmcia_dev(dev);
460 p_drv = to_pcmcia_drv(dev->driver);
d6ff5a85
DB		 461
462 /* If we're removing the primary module driving a
463 * pseudo multi-function card, we need to unbind
464 * all devices
465 */
466 did = (struct pcmcia_device_id *) p_dev->dev.driver_data;
b2f51a1c 467 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
d6ff5a85
DB		 468 (p_dev->socket->device_count != 0) &&
469 (p_dev->device_no == 0))
470 pcmcia_card_remove(p_dev->socket, p_dev);
471
472 /* detach the "instance" */
f3990715
DB		 473 if (!p_drv)
474 return 0;
1da177e4 475
f3990715 476 if (p_drv->remove)
cc3b4866
DB		 477 p_drv->remove(p_dev);
478
a0aab143
DB		 479 p_dev->dev_node = NULL;
480
f3990715 481 /* check for proper unloading */
e2d40963 482 if (p_dev->_irq || p_dev->_io || p_dev->_locked)
f3990715
DB		 483 printk(KERN_INFO "pcmcia: driver %s did not release config properly\n",
484 p_drv->drv.name);
cc3b4866 485
f3990715 486 for (i = 0; i < MAX_WIN; i++)
e2d40963 487 if (p_dev->_win & CLIENT_WIN_REQ(i))
f3990715
DB		 488 printk(KERN_INFO "pcmcia: driver %s did not release windows properly\n",
489 p_drv->drv.name);
cc3b4866 490
f3990715
DB		 491 /* references from pcmcia_probe_device */
492 pcmcia_put_dev(p_dev);
493 module_put(p_drv->owner);
1da177e4
LT		 494
495 return 0;
496}
497
498
1da177e4
LT		 499/*
500 * pcmcia_device_query -- determine information about a pcmcia device
501 */
502static int pcmcia_device_query(struct pcmcia_device *p_dev)
503{
504 cistpl_manfid_t manf_id;
505 cistpl_funcid_t func_id;
76fa82fb 506 cistpl_vers_1_t *vers1;
1da177e4
LT		 507 unsigned int i;
508
76fa82fb
IM		 509 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
510 if (!vers1)
511 return -ENOMEM;
512
1da177e4
LT		 513 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
514 CISTPL_MANFID, &manf_id)) {
515 p_dev->manf_id = manf_id.manf;
516 p_dev->card_id = manf_id.card;
517 p_dev->has_manf_id = 1;
518 p_dev->has_card_id = 1;
519 }
520
521 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
522 CISTPL_FUNCID, &func_id)) {
523 p_dev->func_id = func_id.func;
524 p_dev->has_func_id = 1;
525 } else {
526 /* rule of thumb: cards with no FUNCID, but with
527 * common memory device geometry information, are
528 * probably memory cards (from pcmcia-cs) */
76fa82fb
IM		 529 cistpl_device_geo_t *devgeo;
530
531 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
532 if (!devgeo) {
533 kfree(vers1);
534 return -ENOMEM;
535 }
1da177e4 536 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
76fa82fb 537 CISTPL_DEVICE_GEO, devgeo)) {
1da177e4
LT		 538 ds_dbg(0, "mem device geometry probably means "
539 "FUNCID_MEMORY\n");
540 p_dev->func_id = CISTPL_FUNCID_MEMORY;
541 p_dev->has_func_id = 1;
542 }
76fa82fb 543 kfree(devgeo);
1da177e4
LT		 544 }
545
546 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
76fa82fb
IM		 547 vers1)) {
548 for (i=0; i < vers1->ns; i++) {
1da177e4
LT		 549 char *tmp;
550 unsigned int length;
551
76fa82fb 552 tmp = vers1->str + vers1->ofs[i];
1da177e4
LT		 553
554 length = strlen(tmp) + 1;
6e3d4f25 555 if ((length < 2) || (length > 255))
1da177e4
LT		 556 continue;
557
558 p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
559 GFP_KERNEL);
560 if (!p_dev->prod_id[i])
561 continue;
562
563 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
564 tmp, length);
565 }
566 }
567
76fa82fb 568 kfree(vers1);
1da177e4
LT		 569 return 0;
570}
571
572
573/* device_add_lock is needed to avoid double registration by cardmgr and kernel.
574 * Serializes pcmcia_device_add; will most likely be removed in future.
575 *
576 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
577 * won't work, this doesn't matter much at the moment: the driver core doesn't
578 * support it either.
579 */
7fe908dd 580static DEFINE_MUTEX(device_add_lock);
1da177e4 581
dc109497 582struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
1da177e4 583{
360b65b9 584 struct pcmcia_device *p_dev, *tmp_dev;
1da177e4 585 unsigned long flags;
bd65a685 586 int bus_id_len;
1da177e4 587
dc109497 588 s = pcmcia_get_socket(s);
1da177e4
LT		 589 if (!s)
590 return NULL;
591
7fe908dd 592 mutex_lock(&device_add_lock);
1da177e4 593
1ad275e3
DB		 594 /* max of 2 devices per card */
595 if (s->device_count == 2)
596 goto err_put;
597
8084b372 598 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
1da177e4
LT		 599 if (!p_dev)
600 goto err_put;
1da177e4 601
dc109497 602 p_dev->socket = s;
1da177e4
LT		 603 p_dev->device_no = (s->device_count++);
604 p_dev->func = function;
552dc85d
DB		 605 if (s->functions <= function)
606 s->functions = function + 1;
1da177e4
LT		 607
608 p_dev->dev.bus = &pcmcia_bus_type;
dc109497 609 p_dev->dev.parent = s->dev.dev;
1da177e4 610 p_dev->dev.release = pcmcia_release_dev;
bd65a685
BG		 611 bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
612
613 p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL);
614 if (!p_dev->devname)
615 goto err_free;
616 sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id);
1da177e4
LT		 617
618 /* compat */
1da177e4 619 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
360b65b9
DB		 620
621 /*
622 * p_dev->function_config must be the same for all card functions.
623 * Note that this is serialized by the device_add_lock, so that
624 * only one such struct will be created.
625 */
626 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
627 if (p_dev->func == tmp_dev->func) {
628 p_dev->function_config = tmp_dev->function_config;
629 kref_get(&p_dev->function_config->ref);
630 }
631
632 /* Add to the list in pcmcia_bus_socket */
6171b88b 633 list_add(&p_dev->socket_device_list, &s->devices_list);
360b65b9 634
1da177e4
LT		 635 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
636
360b65b9
DB		 637 if (!p_dev->function_config) {
638 p_dev->function_config = kzalloc(sizeof(struct config_t),
639 GFP_KERNEL);
640 if (!p_dev->function_config)
641 goto err_unreg;
642 kref_init(&p_dev->function_config->ref);
643 }
644
807277cb
DB		 645 printk(KERN_NOTICE "pcmcia: registering new device %s\n",
646 p_dev->devname);
647
1ad275e3
DB		 648 pcmcia_device_query(p_dev);
649
360b65b9
DB		 650 if (device_register(&p_dev->dev))
651 goto err_unreg;
1da177e4 652
7fe908dd 653 mutex_unlock(&device_add_lock);
1da177e4
LT		 654
655 return p_dev;
656
360b65b9
DB		 657 err_unreg:
658 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
659 list_del(&p_dev->socket_device_list);
660 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
661
1da177e4 662 err_free:
bd65a685 663 kfree(p_dev->devname);
1da177e4
LT		 664 kfree(p_dev);
665 s->device_count--;
666 err_put:
7fe908dd 667 mutex_unlock(&device_add_lock);
dc109497 668 pcmcia_put_socket(s);
1da177e4
LT		 669
670 return NULL;
671}
672
673
674static int pcmcia_card_add(struct pcmcia_socket *s)
675{
676 cisinfo_t cisinfo;
677 cistpl_longlink_mfc_t mfc;
678 unsigned int no_funcs, i;
679 int ret = 0;
680
681 if (!(s->resource_setup_done))
682 return -EAGAIN; /* try again, but later... */
683
de75914e
DB		 684 if (pcmcia_validate_mem(s))
685 return -EAGAIN; /* try again, but later... */
686
1da177e4
LT		 687 ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
688 if (ret || !cisinfo.Chains) {
689 ds_dbg(0, "invalid CIS or invalid resources\n");
690 return -ENODEV;
691 }
692
693 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
694 no_funcs = mfc.nfn;
695 else
696 no_funcs = 1;
697
1da177e4 698 for (i=0; i < no_funcs; i++)
dc109497 699 pcmcia_device_add(s, i);
1da177e4
LT		 700
701 return (ret);
702}
703
704
1ad275e3
DB		 705static void pcmcia_delayed_add_pseudo_device(void *data)
706{
dc109497 707 struct pcmcia_socket *s = data;
1ad275e3 708 pcmcia_device_add(s, 0);
b5e43913 709 s->pcmcia_state.device_add_pending = 0;
1ad275e3
DB		 710}
711
e2f0b534 712static int pcmcia_requery(struct device *dev, void * _data)
ff1fa9ef 713{
e2f0b534
DB		 714 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
715 if (!p_dev->dev.driver)
716 pcmcia_device_query(p_dev);
717
718 return 0;
719}
720
721static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
722{
723 int no_devices=0;
724 unsigned long flags;
725
7fe908dd 726 /* must be called with skt_mutex held */
e2f0b534 727 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
dc109497 728 if (list_empty(&skt->devices_list))
e2f0b534
DB		 729 no_devices=1;
730 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
731
732 /* if no devices were added for this socket yet because of
733 * missing resource information or other trouble, we need to
734 * do this now. */
735 if (no_devices) {
736 int ret = pcmcia_card_add(skt);
737 if (ret)
738 return;
739 }
740
741 /* some device information might have changed because of a CIS
742 * update or because we can finally read it correctly... so
743 * determine it again, overwriting old values if necessary. */
744 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
745
746 /* we re-scan all devices, not just the ones connected to this
747 * socket. This does not matter, though. */
a5b55778 748 bus_rescan_devices(&pcmcia_bus_type);
ff1fa9ef 749}
1ad275e3
DB		 750
751static inline int pcmcia_devmatch(struct pcmcia_device *dev,
752 struct pcmcia_device_id *did)
753{
754 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
755 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
756 return 0;
757 }
758
759 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
760 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
761 return 0;
762 }
763
764 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
765 if (dev->func != did->function)
766 return 0;
767 }
768
769 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
770 if (!dev->prod_id[0])
771 return 0;
772 if (strcmp(did->prod_id[0], dev->prod_id[0]))
773 return 0;
774 }
775
776 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
777 if (!dev->prod_id[1])
778 return 0;
779 if (strcmp(did->prod_id[1], dev->prod_id[1]))
780 return 0;
781 }
782
783 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
784 if (!dev->prod_id[2])
785 return 0;
786 if (strcmp(did->prod_id[2], dev->prod_id[2]))
787 return 0;
788 }
789
790 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
791 if (!dev->prod_id[3])
792 return 0;
793 if (strcmp(did->prod_id[3], dev->prod_id[3]))
794 return 0;
795 }
796
797 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
1ad275e3
DB		 798 if (dev->device_no != did->device_no)
799 return 0;
800 }
801
802 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
803 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
804 return 0;
805
806 /* if this is a pseudo-multi-function device,
807 * we need explicit matches */
808 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
809 return 0;
810 if (dev->device_no)
811 return 0;
812
813 /* also, FUNC_ID matching needs to be activated by userspace
814 * after it has re-checked that there is no possible module
815 * with a prod_id/manf_id/card_id match.
816 */
817 if (!dev->allow_func_id_match)
818 return 0;
819 }
820
ea7b3882 821 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
daa9517d
DB		 822 if (!dev->socket->fake_cis)
823 pcmcia_load_firmware(dev, did->cisfile);
824
825 if (!dev->socket->fake_cis)
ea7b3882 826 return 0;
ea7b3882
DB		 827 }
828
f602ff7e
DB		 829 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
830 int i;
831 for (i=0; i<4; i++)
832 if (dev->prod_id[i])
833 return 0;
834 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
835 return 0;
836 }
837
1ad275e3
DB		 838 dev->dev.driver_data = (void *) did;
839
840 return 1;
841}
842
843
1da177e4
LT		 844static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
845 struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
846 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
1ad275e3 847 struct pcmcia_device_id *did = p_drv->id_table;
1da177e4 848
0e0fad8f 849#ifdef CONFIG_PCMCIA_IOCTL
1da177e4
LT		 850 /* matching by cardmgr */
851 if (p_dev->cardmgr == p_drv)
852 return 1;
0e0fad8f 853#endif
1da177e4 854
1ad275e3
DB		 855 while (did && did->match_flags) {
856 if (pcmcia_devmatch(p_dev, did))
857 return 1;
858 did++;
859 }
860
1da177e4
LT		 861 return 0;
862}
863
840c2ac5
DB		 864#ifdef CONFIG_HOTPLUG
865
312c004d
KS		 866static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
867 char *buffer, int buffer_size)
840c2ac5
DB		 868{
869 struct pcmcia_device *p_dev;
870 int i, length = 0;
871 u32 hash[4] = { 0, 0, 0, 0};
872
873 if (!dev)
874 return -ENODEV;
875
876 p_dev = to_pcmcia_dev(dev);
877
878 /* calculate hashes */
879 for (i=0; i<4; i++) {
880 if (!p_dev->prod_id[i])
881 continue;
882 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
883 }
884
885 i = 0;
886
312c004d
KS		 887 if (add_uevent_var(envp, num_envp, &i,
888 buffer, buffer_size, &length,
889 "SOCKET_NO=%u",
890 p_dev->socket->sock))
840c2ac5
DB		 891 return -ENOMEM;
892
312c004d
KS		 893 if (add_uevent_var(envp, num_envp, &i,
894 buffer, buffer_size, &length,
895 "DEVICE_NO=%02X",
896 p_dev->device_no))
840c2ac5
DB		 897 return -ENOMEM;
898
312c004d
KS		 899 if (add_uevent_var(envp, num_envp, &i,
900 buffer, buffer_size, &length,
901 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
902 "pa%08Xpb%08Xpc%08Xpd%08X",
903 p_dev->has_manf_id ? p_dev->manf_id : 0,
904 p_dev->has_card_id ? p_dev->card_id : 0,
905 p_dev->has_func_id ? p_dev->func_id : 0,
906 p_dev->func,
907 p_dev->device_no,
908 hash[0],
909 hash[1],
910 hash[2],
911 hash[3]))
840c2ac5
DB		 912 return -ENOMEM;
913
914 envp[i] = NULL;
915
916 return 0;
917}
918
919#else
920
312c004d 921static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
840c2ac5
DB		 922 char *buffer, int buffer_size)
923{
924 return -ENODEV;
925}
926
927#endif
928
1da177e4
LT		 929/************************ per-device sysfs output ***************************/
930
931#define pcmcia_device_attr(field, test, format) \
e404e274 932static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 933{ \
934 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
935 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
936}
937
938#define pcmcia_device_stringattr(name, field) \
e404e274 939static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 940{ \
941 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
942 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
943}
944
945pcmcia_device_attr(func, socket, "0x%02x\n");
946pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
947pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
948pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
949pcmcia_device_stringattr(prod_id1, prod_id[0]);
950pcmcia_device_stringattr(prod_id2, prod_id[1]);
951pcmcia_device_stringattr(prod_id3, prod_id[2]);
952pcmcia_device_stringattr(prod_id4, prod_id[3]);
953
db1019ca
DB		 954
955static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf)
956{
957 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
958
f6fbe01a 959 if (p_dev->suspended)
db1019ca
DB		 960 return sprintf(buf, "off\n");
961 else
962 return sprintf(buf, "on\n");
963}
964
965static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr,
966 const char *buf, size_t count)
967{
968 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
969 int ret = 0;
970
971 if (!count)
972 return -EINVAL;
973
f6fbe01a 974 if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
db1019ca 975 ret = dpm_runtime_suspend(dev, PMSG_SUSPEND);
f6fbe01a 976 else if (p_dev->suspended && !strncmp(buf, "on", 2))
db1019ca
DB		 977 dpm_runtime_resume(dev);
978
979 return ret ? ret : count;
980}
981
982
3704511b 983static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
3248ff43
DB		 984{
985 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
986 int i;
987 u32 hash[4] = { 0, 0, 0, 0};
988
989 /* calculate hashes */
990 for (i=0; i<4; i++) {
991 if (!p_dev->prod_id[i])
992 continue;
993 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i]));
994 }
995 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
996 "pa%08Xpb%08Xpc%08Xpd%08X\n",
997 p_dev->has_manf_id ? p_dev->manf_id : 0,
998 p_dev->has_card_id ? p_dev->card_id : 0,
999 p_dev->has_func_id ? p_dev->func_id : 0,
1000 p_dev->func, p_dev->device_no,
1001 hash[0], hash[1], hash[2], hash[3]);
1002}
a5b55778 1003
3248ff43
DB		 1004static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
1005 struct device_attribute *attr, const char *buf, size_t count)
a5b55778
DB		 1006{
1007 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
db1019ca
DB		 1008
1009 if (!count)
1010 return -EINVAL;
a5b55778 1011
7fe908dd 1012 mutex_lock(&p_dev->socket->skt_mutex);
a5b55778 1013 p_dev->allow_func_id_match = 1;
7fe908dd 1014 mutex_unlock(&p_dev->socket->skt_mutex);
a5b55778
DB		 1015
1016 bus_rescan_devices(&pcmcia_bus_type);
1017
1018 return count;
1019}
1020
1da177e4
LT		 1021static struct device_attribute pcmcia_dev_attrs[] = {
1022 __ATTR(function, 0444, func_show, NULL),
db1019ca 1023 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state),
1da177e4
LT		 1024 __ATTR_RO(func_id),
1025 __ATTR_RO(manf_id),
1026 __ATTR_RO(card_id),
1027 __ATTR_RO(prod_id1),
1028 __ATTR_RO(prod_id2),
1029 __ATTR_RO(prod_id3),
1030 __ATTR_RO(prod_id4),
3248ff43 1031 __ATTR_RO(modalias),
a5b55778 1032 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
1da177e4
LT		 1033 __ATTR_NULL,
1034};
1035
8e9e793d
DB		 1036/* PM support, also needed for reset */
1037
1038static int pcmcia_dev_suspend(struct device * dev, pm_message_t state)
1039{
1040 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1041 struct pcmcia_driver *p_drv = NULL;
f6fbe01a 1042 int ret = 0;
8e9e793d
DB		 1043
1044 if (dev->driver)
1045 p_drv = to_pcmcia_drv(dev->driver);
1046
e2d40963
DB		 1047 if (!p_drv)
1048 goto out;
1049
1050 if (p_drv->suspend) {
8661bb5b
DB		 1051 ret = p_drv->suspend(p_dev);
1052 if (ret)
f6fbe01a 1053 goto out;
8661bb5b 1054 }
8e9e793d 1055
e2d40963
DB		 1056 if (p_dev->device_no == p_dev->func)
1057 pcmcia_release_configuration(p_dev);
1058
f6fbe01a
DB		 1059 out:
1060 if (!ret)
1061 p_dev->suspended = 1;
1062 return ret;
8e9e793d
DB		 1063}
1064
1065
1066static int pcmcia_dev_resume(struct device * dev)
1067{
1068 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1069 struct pcmcia_driver *p_drv = NULL;
f6fbe01a 1070 int ret = 0;
8e9e793d
DB		 1071
1072 if (dev->driver)
1073 p_drv = to_pcmcia_drv(dev->driver);
1074
e2d40963
DB		 1075 if (!p_drv)
1076 goto out;
1077
1078 if (p_dev->device_no == p_dev->func) {
1079 ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
1080 if (ret)
1081 goto out;
8661bb5b 1082 }
8e9e793d 1083
e2d40963
DB		 1084 if (p_drv->resume)
1085 ret = p_drv->resume(p_dev);
1086
f6fbe01a
DB		 1087 out:
1088 if (!ret)
1089 p_dev->suspended = 0;
1090 return ret;
8e9e793d
DB		 1091}
1092
1093
1094static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
1095{
1096 struct pcmcia_socket *skt = _data;
1097 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1098
1099 if (p_dev->socket != skt)
1100 return 0;
1101
1102 return dpm_runtime_suspend(dev, PMSG_SUSPEND);
1103}
1104
1105static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
1106{
1107 struct pcmcia_socket *skt = _data;
1108 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1109
1110 if (p_dev->socket != skt)
1111 return 0;
1112
1113 dpm_runtime_resume(dev);
1114
1115 return 0;
1116}
1117
1118static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1119{
1120 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1121 return 0;
1122}
1123
1124static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1125{
1126 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1127 pcmcia_bus_suspend_callback)) {
1128 pcmcia_bus_resume(skt);
1129 return -EIO;
1130 }
1131 return 0;
1132}
1133
1da177e4 1134
1da177e4
LT		 1135/*======================================================================
1136
1137 The card status event handler.
1138
1139======================================================================*/
1140
1da177e4
LT		 1141/* Normally, the event is passed to individual drivers after
1142 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
1143 * is inversed to maintain historic compatibility.
1144 */
1145
1146static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
1147{
dc109497 1148 struct pcmcia_socket *s = pcmcia_get_socket(skt);
1da177e4
LT		 1149
1150 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
dc109497 1151 event, priority, skt);
1da177e4 1152
f8cfa618 1153 switch (event) {
1da177e4 1154 case CS_EVENT_CARD_REMOVAL:
b5e43913 1155 s->pcmcia_state.present = 0;
d6ff5a85 1156 pcmcia_card_remove(skt, NULL);
dc109497 1157 handle_event(skt, event);
1da177e4 1158 break;
f8cfa618 1159
1da177e4 1160 case CS_EVENT_CARD_INSERTION:
b5e43913 1161 s->pcmcia_state.present = 1;
1da177e4 1162 pcmcia_card_add(skt);
dc109497 1163 handle_event(skt, event);
1da177e4
LT		 1164 break;
1165
1166 case CS_EVENT_EJECTION_REQUEST:
1da177e4
LT		 1167 break;
1168
8e9e793d
DB		 1169 case CS_EVENT_PM_SUSPEND:
1170 case CS_EVENT_PM_RESUME:
1171 case CS_EVENT_RESET_PHYSICAL:
1172 case CS_EVENT_CARD_RESET:
1da177e4 1173 default:
dc109497 1174 handle_event(skt, event);
1da177e4
LT		 1175 break;
1176 }
1177
dc109497
DB		 1178 pcmcia_put_socket(s);
1179
1da177e4
LT		 1180 return 0;
1181} /* ds_event */
1182
1183
9940ec36
DB		 1184struct pcmcia_device * pcmcia_dev_present(struct pcmcia_device *_p_dev)
1185{
1186 struct pcmcia_device *p_dev;
1187 struct pcmcia_device *ret = NULL;
1188
1189 p_dev = pcmcia_get_dev(_p_dev);
1190 if (!p_dev)
1191 return NULL;
1192
1193 if (!p_dev->socket->pcmcia_state.present)
1194 goto out;
1195
1196 if (p_dev->_removed)
1197 goto out;
1198
1199 if (p_dev->suspended)
1200 goto out;
1201
1202 ret = p_dev;
1203 out:
1204 pcmcia_put_dev(p_dev);
1205 return ret;
1206}
1207EXPORT_SYMBOL(pcmcia_dev_present);
1208
1209
90c6cdd1
DB		 1210static struct pcmcia_callback pcmcia_bus_callback = {
1211 .owner = THIS_MODULE,
1212 .event = ds_event,
1213 .requery = pcmcia_bus_rescan,
8e9e793d
DB		 1214 .suspend = pcmcia_bus_suspend,
1215 .resume = pcmcia_bus_resume,
90c6cdd1
DB		 1216};
1217
d8539d81
DT		 1218static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev,
1219 struct class_interface *class_intf)
1da177e4
LT		 1220{
1221 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1da177e4
LT		 1222 int ret;
1223
dc109497
DB		 1224 socket = pcmcia_get_socket(socket);
1225 if (!socket) {
1da177e4 1226 printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
1da177e4
LT		 1227 return -ENODEV;
1228 }
1229
1da177e4
LT		 1230 /*
1231 * Ugly. But we want to wait for the socket threads to have started up.
1232 * We really should let the drivers themselves drive some of this..
1233 */
1234 msleep(250);
1235
e7a480d2 1236#ifdef CONFIG_PCMCIA_IOCTL
dc109497 1237 init_waitqueue_head(&socket->queue);
e7a480d2 1238#endif
dc109497
DB		 1239 INIT_LIST_HEAD(&socket->devices_list);
1240 INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket);
1241 memset(&socket->pcmcia_state, 0, sizeof(u8));
1242 socket->device_count = 0;
1da177e4 1243
90c6cdd1 1244 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1da177e4
LT		 1245 if (ret) {
1246 printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
dc109497 1247 pcmcia_put_socket(socket);
1da177e4
LT		 1248 return (ret);
1249 }
1250
1251 return 0;
1252}
1253
d8539d81
DT		 1254static void pcmcia_bus_remove_socket(struct class_device *class_dev,
1255 struct class_interface *class_intf)
1da177e4
LT		 1256{
1257 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1258
dc109497 1259 if (!socket)
1da177e4
LT		 1260 return;
1261
dc109497 1262 socket->pcmcia_state.dead = 1;
1da177e4
LT		 1263 pccard_register_pcmcia(socket, NULL);
1264
dc109497 1265 pcmcia_put_socket(socket);
1da177e4
LT		 1266
1267 return;
1268}
1269
1270
1271/* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1272static struct class_interface pcmcia_bus_interface = {
1273 .class = &pcmcia_socket_class,
1274 .add = &pcmcia_bus_add_socket,
1275 .remove = &pcmcia_bus_remove_socket,
1276};
1277
1278
e7a480d2 1279struct bus_type pcmcia_bus_type = {
1da177e4 1280 .name = "pcmcia",
312c004d 1281 .uevent = pcmcia_bus_uevent,
1da177e4
LT		 1282 .match = pcmcia_bus_match,
1283 .dev_attrs = pcmcia_dev_attrs,
1d0baa3a
RK		 1284 .probe = pcmcia_device_probe,
1285 .remove = pcmcia_device_remove,
8e9e793d
DB		 1286 .suspend = pcmcia_dev_suspend,
1287 .resume = pcmcia_dev_resume,
1da177e4 1288};
1da177e4
LT		 1289
1290
1291static int __init init_pcmcia_bus(void)
1292{
1da177e4
LT		 1293 spin_lock_init(&pcmcia_dev_list_lock);
1294
1295 bus_register(&pcmcia_bus_type);
1296 class_interface_register(&pcmcia_bus_interface);
1297
e7a480d2 1298 pcmcia_setup_ioctl();
1da177e4
LT		 1299
1300 return 0;
1301}
1302fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1303 * pcmcia_socket_class is already registered */
1304
1305
1306static void __exit exit_pcmcia_bus(void)
1307{
e7a480d2 1308 pcmcia_cleanup_ioctl();
1da177e4 1309
e7a480d2 1310 class_interface_unregister(&pcmcia_bus_interface);
1da177e4
LT		 1311
1312 bus_unregister(&pcmcia_bus_type);
1313}
1314module_exit(exit_pcmcia_bus);
1315
1316
1da177e4 1317MODULE_ALIAS("ds");
Linux kernel - Deliverables
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