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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 | |
3b659fb8 | 13 | * (C) 2003 - 2005 Dominik Brodowski |
1da177e4 LT |
14 | */ |
15 | ||
16 | #include <linux/config.h> | |
3b659fb8 | 17 | #include <linux/kernel.h> |
1da177e4 | 18 | #include <linux/module.h> |
1da177e4 | 19 | #include <linux/init.h> |
1da177e4 | 20 | #include <linux/errno.h> |
1da177e4 LT |
21 | #include <linux/list.h> |
22 | #include <linux/delay.h> | |
1da177e4 | 23 | #include <linux/workqueue.h> |
840c2ac5 | 24 | #include <linux/crc32.h> |
daa9517d | 25 | #include <linux/firmware.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 | ||
41 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
42 | MODULE_DESCRIPTION("PCMCIA Driver Services"); | |
43 | MODULE_LICENSE("GPL"); | |
44 | ||
45 | #ifdef DEBUG | |
e7a480d2 | 46 | int ds_pc_debug; |
1da177e4 LT |
47 | |
48 | module_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 | 58 | spinlock_t pcmcia_dev_list_lock; |
1da177e4 | 59 | |
dc109497 | 60 | static int unbind_request(struct pcmcia_socket *s); |
1da177e4 LT |
61 | |
62 | /*====================================================================*/ | |
63 | ||
64 | /* code which was in cs.c before */ | |
65 | ||
66 | /* String tables for error messages */ | |
67 | ||
68 | typedef struct lookup_t { | |
69 | int key; | |
70 | char *msg; | |
71 | } lookup_t; | |
72 | ||
73 | static const lookup_t error_table[] = { | |
74 | { CS_SUCCESS, "Operation succeeded" }, | |
75 | { CS_BAD_ADAPTER, "Bad adapter" }, | |
76 | { CS_BAD_ATTRIBUTE, "Bad attribute", }, | |
77 | { CS_BAD_BASE, "Bad base address" }, | |
78 | { CS_BAD_EDC, "Bad EDC" }, | |
79 | { CS_BAD_IRQ, "Bad IRQ" }, | |
80 | { CS_BAD_OFFSET, "Bad offset" }, | |
81 | { CS_BAD_PAGE, "Bad page number" }, | |
82 | { CS_READ_FAILURE, "Read failure" }, | |
83 | { CS_BAD_SIZE, "Bad size" }, | |
84 | { CS_BAD_SOCKET, "Bad socket" }, | |
85 | { CS_BAD_TYPE, "Bad type" }, | |
86 | { CS_BAD_VCC, "Bad Vcc" }, | |
87 | { CS_BAD_VPP, "Bad Vpp" }, | |
88 | { CS_BAD_WINDOW, "Bad window" }, | |
89 | { CS_WRITE_FAILURE, "Write failure" }, | |
90 | { CS_NO_CARD, "No card present" }, | |
91 | { CS_UNSUPPORTED_FUNCTION, "Usupported function" }, | |
92 | { CS_UNSUPPORTED_MODE, "Unsupported mode" }, | |
93 | { CS_BAD_SPEED, "Bad speed" }, | |
94 | { CS_BUSY, "Resource busy" }, | |
95 | { CS_GENERAL_FAILURE, "General failure" }, | |
96 | { CS_WRITE_PROTECTED, "Write protected" }, | |
97 | { CS_BAD_ARG_LENGTH, "Bad argument length" }, | |
98 | { CS_BAD_ARGS, "Bad arguments" }, | |
99 | { CS_CONFIGURATION_LOCKED, "Configuration locked" }, | |
100 | { CS_IN_USE, "Resource in use" }, | |
101 | { CS_NO_MORE_ITEMS, "No more items" }, | |
102 | { CS_OUT_OF_RESOURCE, "Out of resource" }, | |
103 | { CS_BAD_HANDLE, "Bad handle" }, | |
104 | { CS_BAD_TUPLE, "Bad CIS tuple" } | |
105 | }; | |
106 | ||
107 | ||
108 | static const lookup_t service_table[] = { | |
109 | { AccessConfigurationRegister, "AccessConfigurationRegister" }, | |
110 | { AddSocketServices, "AddSocketServices" }, | |
111 | { AdjustResourceInfo, "AdjustResourceInfo" }, | |
112 | { CheckEraseQueue, "CheckEraseQueue" }, | |
113 | { CloseMemory, "CloseMemory" }, | |
114 | { DeregisterClient, "DeregisterClient" }, | |
115 | { DeregisterEraseQueue, "DeregisterEraseQueue" }, | |
116 | { GetCardServicesInfo, "GetCardServicesInfo" }, | |
117 | { GetClientInfo, "GetClientInfo" }, | |
118 | { GetConfigurationInfo, "GetConfigurationInfo" }, | |
119 | { GetEventMask, "GetEventMask" }, | |
120 | { GetFirstClient, "GetFirstClient" }, | |
121 | { GetFirstRegion, "GetFirstRegion" }, | |
122 | { GetFirstTuple, "GetFirstTuple" }, | |
123 | { GetNextClient, "GetNextClient" }, | |
124 | { GetNextRegion, "GetNextRegion" }, | |
125 | { GetNextTuple, "GetNextTuple" }, | |
126 | { GetStatus, "GetStatus" }, | |
127 | { GetTupleData, "GetTupleData" }, | |
128 | { MapMemPage, "MapMemPage" }, | |
129 | { ModifyConfiguration, "ModifyConfiguration" }, | |
130 | { ModifyWindow, "ModifyWindow" }, | |
131 | { OpenMemory, "OpenMemory" }, | |
132 | { ParseTuple, "ParseTuple" }, | |
133 | { ReadMemory, "ReadMemory" }, | |
134 | { RegisterClient, "RegisterClient" }, | |
135 | { RegisterEraseQueue, "RegisterEraseQueue" }, | |
136 | { RegisterMTD, "RegisterMTD" }, | |
137 | { ReleaseConfiguration, "ReleaseConfiguration" }, | |
138 | { ReleaseIO, "ReleaseIO" }, | |
139 | { ReleaseIRQ, "ReleaseIRQ" }, | |
140 | { ReleaseWindow, "ReleaseWindow" }, | |
141 | { RequestConfiguration, "RequestConfiguration" }, | |
142 | { RequestIO, "RequestIO" }, | |
143 | { RequestIRQ, "RequestIRQ" }, | |
144 | { RequestSocketMask, "RequestSocketMask" }, | |
145 | { RequestWindow, "RequestWindow" }, | |
146 | { ResetCard, "ResetCard" }, | |
147 | { SetEventMask, "SetEventMask" }, | |
148 | { ValidateCIS, "ValidateCIS" }, | |
149 | { WriteMemory, "WriteMemory" }, | |
150 | { BindDevice, "BindDevice" }, | |
151 | { BindMTD, "BindMTD" }, | |
152 | { ReportError, "ReportError" }, | |
153 | { SuspendCard, "SuspendCard" }, | |
154 | { ResumeCard, "ResumeCard" }, | |
155 | { EjectCard, "EjectCard" }, | |
156 | { InsertCard, "InsertCard" }, | |
157 | { ReplaceCIS, "ReplaceCIS" } | |
158 | }; | |
159 | ||
160 | ||
e94e15f7 | 161 | static int pcmcia_report_error(client_handle_t handle, error_info_t *err) |
1da177e4 LT |
162 | { |
163 | int i; | |
164 | char *serv; | |
165 | ||
166 | if (CHECK_HANDLE(handle)) | |
167 | printk(KERN_NOTICE); | |
168 | else { | |
169 | struct pcmcia_device *p_dev = handle_to_pdev(handle); | |
170 | printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id); | |
171 | } | |
172 | ||
173 | for (i = 0; i < ARRAY_SIZE(service_table); i++) | |
174 | if (service_table[i].key == err->func) | |
175 | break; | |
176 | if (i < ARRAY_SIZE(service_table)) | |
177 | serv = service_table[i].msg; | |
178 | else | |
179 | serv = "Unknown service number"; | |
180 | ||
181 | for (i = 0; i < ARRAY_SIZE(error_table); i++) | |
182 | if (error_table[i].key == err->retcode) | |
183 | break; | |
184 | if (i < ARRAY_SIZE(error_table)) | |
185 | printk("%s: %s\n", serv, error_table[i].msg); | |
186 | else | |
187 | printk("%s: Unknown error code %#x\n", serv, err->retcode); | |
188 | ||
189 | return CS_SUCCESS; | |
190 | } /* report_error */ | |
1da177e4 LT |
191 | |
192 | /* end of code which was in cs.c before */ | |
193 | ||
194 | /*======================================================================*/ | |
195 | ||
196 | void cs_error(client_handle_t handle, int func, int ret) | |
197 | { | |
198 | error_info_t err = { func, ret }; | |
199 | pcmcia_report_error(handle, &err); | |
200 | } | |
201 | EXPORT_SYMBOL(cs_error); | |
202 | ||
23a83bfe DB |
203 | |
204 | static void pcmcia_check_driver(struct pcmcia_driver *p_drv) | |
205 | { | |
206 | struct pcmcia_device_id *did = p_drv->id_table; | |
207 | unsigned int i; | |
208 | u32 hash; | |
209 | ||
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 | |
239 | * @filename - requested filename in /lib/firmware/cis/ | |
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 | |
243 | * /lib/firmware/cis/ in userspace. | |
244 | */ | |
245 | static 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 | ||
267 | cis = kmalloc(sizeof(cisdump_t), GFP_KERNEL); | |
268 | if (!cis) | |
269 | goto release; | |
270 | ||
271 | memset(cis, 0, sizeof(cisdump_t)); | |
272 | ||
273 | cis->Length = fw->size + 1; | |
274 | memcpy(cis->Data, fw->data, fw->size); | |
275 | ||
276 | if (!pcmcia_replace_cis(s, cis)) | |
277 | ret = 0; | |
278 | } | |
279 | release: | |
280 | release_firmware(fw); | |
281 | ||
282 | return (ret); | |
283 | } | |
284 | ||
285 | #else /* !CONFIG_PCMCIA_LOAD_CIS */ | |
286 | ||
287 | static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) | |
288 | { | |
289 | return -ENODEV; | |
290 | } | |
291 | ||
292 | #endif | |
293 | ||
294 | ||
1da177e4 LT |
295 | /*======================================================================*/ |
296 | ||
1da177e4 | 297 | |
1da177e4 LT |
298 | /** |
299 | * pcmcia_register_driver - register a PCMCIA driver with the bus core | |
300 | * | |
301 | * Registers a PCMCIA driver with the PCMCIA bus core. | |
302 | */ | |
303 | static int pcmcia_device_probe(struct device *dev); | |
304 | static int pcmcia_device_remove(struct device * dev); | |
305 | ||
306 | int pcmcia_register_driver(struct pcmcia_driver *driver) | |
307 | { | |
308 | if (!driver) | |
309 | return -EINVAL; | |
310 | ||
23a83bfe DB |
311 | pcmcia_check_driver(driver); |
312 | ||
1da177e4 LT |
313 | /* initialize common fields */ |
314 | driver->drv.bus = &pcmcia_bus_type; | |
315 | driver->drv.owner = driver->owner; | |
316 | driver->drv.probe = pcmcia_device_probe; | |
317 | driver->drv.remove = pcmcia_device_remove; | |
318 | ||
319 | return driver_register(&driver->drv); | |
320 | } | |
321 | EXPORT_SYMBOL(pcmcia_register_driver); | |
322 | ||
323 | /** | |
324 | * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core | |
325 | */ | |
326 | void pcmcia_unregister_driver(struct pcmcia_driver *driver) | |
327 | { | |
328 | driver_unregister(&driver->drv); | |
329 | } | |
330 | EXPORT_SYMBOL(pcmcia_unregister_driver); | |
331 | ||
1da177e4 LT |
332 | |
333 | /* pcmcia_device handling */ | |
334 | ||
e7a480d2 | 335 | struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev) |
1da177e4 LT |
336 | { |
337 | struct device *tmp_dev; | |
338 | tmp_dev = get_device(&p_dev->dev); | |
339 | if (!tmp_dev) | |
340 | return NULL; | |
341 | return to_pcmcia_dev(tmp_dev); | |
342 | } | |
343 | ||
e7a480d2 | 344 | void pcmcia_put_dev(struct pcmcia_device *p_dev) |
1da177e4 LT |
345 | { |
346 | if (p_dev) | |
347 | put_device(&p_dev->dev); | |
348 | } | |
349 | ||
350 | static void pcmcia_release_dev(struct device *dev) | |
351 | { | |
352 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
353 | ds_dbg(1, "releasing dev %p\n", p_dev); | |
dc109497 | 354 | pcmcia_put_socket(p_dev->socket); |
1da177e4 LT |
355 | kfree(p_dev); |
356 | } | |
357 | ||
358 | ||
359 | static int pcmcia_device_probe(struct device * dev) | |
360 | { | |
361 | struct pcmcia_device *p_dev; | |
362 | struct pcmcia_driver *p_drv; | |
363 | int ret = 0; | |
364 | ||
365 | dev = get_device(dev); | |
366 | if (!dev) | |
367 | return -ENODEV; | |
368 | ||
369 | p_dev = to_pcmcia_dev(dev); | |
370 | p_drv = to_pcmcia_drv(dev->driver); | |
371 | ||
372 | if (!try_module_get(p_drv->owner)) { | |
373 | ret = -EINVAL; | |
374 | goto put_dev; | |
375 | } | |
376 | ||
377 | if (p_drv->attach) { | |
378 | p_dev->instance = p_drv->attach(); | |
379 | if ((!p_dev->instance) || (p_dev->client.state & CLIENT_UNBOUND)) { | |
380 | printk(KERN_NOTICE "ds: unable to create instance " | |
381 | "of '%s'!\n", p_drv->drv.name); | |
382 | ret = -EINVAL; | |
383 | } | |
384 | } | |
385 | ||
386 | if (ret) | |
387 | module_put(p_drv->owner); | |
388 | put_dev: | |
389 | if ((ret) || !(p_drv->attach)) | |
390 | put_device(dev); | |
391 | return (ret); | |
392 | } | |
393 | ||
394 | ||
395 | static int pcmcia_device_remove(struct device * dev) | |
396 | { | |
397 | struct pcmcia_device *p_dev; | |
398 | struct pcmcia_driver *p_drv; | |
399 | ||
400 | /* detach the "instance" */ | |
401 | p_dev = to_pcmcia_dev(dev); | |
402 | p_drv = to_pcmcia_drv(dev->driver); | |
403 | ||
404 | if (p_drv) { | |
405 | if ((p_drv->detach) && (p_dev->instance)) { | |
406 | p_drv->detach(p_dev->instance); | |
407 | /* from pcmcia_probe_device */ | |
408 | put_device(&p_dev->dev); | |
409 | } | |
410 | module_put(p_drv->owner); | |
411 | } | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | ||
417 | ||
418 | /* | |
419 | * pcmcia_device_query -- determine information about a pcmcia device | |
420 | */ | |
421 | static int pcmcia_device_query(struct pcmcia_device *p_dev) | |
422 | { | |
423 | cistpl_manfid_t manf_id; | |
424 | cistpl_funcid_t func_id; | |
425 | cistpl_vers_1_t vers1; | |
426 | unsigned int i; | |
427 | ||
428 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
429 | CISTPL_MANFID, &manf_id)) { | |
430 | p_dev->manf_id = manf_id.manf; | |
431 | p_dev->card_id = manf_id.card; | |
432 | p_dev->has_manf_id = 1; | |
433 | p_dev->has_card_id = 1; | |
434 | } | |
435 | ||
436 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
437 | CISTPL_FUNCID, &func_id)) { | |
438 | p_dev->func_id = func_id.func; | |
439 | p_dev->has_func_id = 1; | |
440 | } else { | |
441 | /* rule of thumb: cards with no FUNCID, but with | |
442 | * common memory device geometry information, are | |
443 | * probably memory cards (from pcmcia-cs) */ | |
444 | cistpl_device_geo_t devgeo; | |
445 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
446 | CISTPL_DEVICE_GEO, &devgeo)) { | |
447 | ds_dbg(0, "mem device geometry probably means " | |
448 | "FUNCID_MEMORY\n"); | |
449 | p_dev->func_id = CISTPL_FUNCID_MEMORY; | |
450 | p_dev->has_func_id = 1; | |
451 | } | |
452 | } | |
453 | ||
454 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1, | |
455 | &vers1)) { | |
456 | for (i=0; i < vers1.ns; i++) { | |
457 | char *tmp; | |
458 | unsigned int length; | |
459 | ||
460 | tmp = vers1.str + vers1.ofs[i]; | |
461 | ||
462 | length = strlen(tmp) + 1; | |
463 | if ((length < 3) || (length > 255)) | |
464 | continue; | |
465 | ||
466 | p_dev->prod_id[i] = kmalloc(sizeof(char) * length, | |
467 | GFP_KERNEL); | |
468 | if (!p_dev->prod_id[i]) | |
469 | continue; | |
470 | ||
471 | p_dev->prod_id[i] = strncpy(p_dev->prod_id[i], | |
472 | tmp, length); | |
473 | } | |
474 | } | |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
479 | ||
480 | /* device_add_lock is needed to avoid double registration by cardmgr and kernel. | |
481 | * Serializes pcmcia_device_add; will most likely be removed in future. | |
482 | * | |
483 | * While it has the caveat that adding new PCMCIA devices inside(!) device_register() | |
484 | * won't work, this doesn't matter much at the moment: the driver core doesn't | |
485 | * support it either. | |
486 | */ | |
487 | static DECLARE_MUTEX(device_add_lock); | |
488 | ||
dc109497 | 489 | struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function) |
1da177e4 LT |
490 | { |
491 | struct pcmcia_device *p_dev; | |
492 | unsigned long flags; | |
493 | ||
dc109497 | 494 | s = pcmcia_get_socket(s); |
1da177e4 LT |
495 | if (!s) |
496 | return NULL; | |
497 | ||
498 | down(&device_add_lock); | |
499 | ||
1ad275e3 DB |
500 | /* max of 2 devices per card */ |
501 | if (s->device_count == 2) | |
502 | goto err_put; | |
503 | ||
1da177e4 LT |
504 | p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL); |
505 | if (!p_dev) | |
506 | goto err_put; | |
507 | memset(p_dev, 0, sizeof(struct pcmcia_device)); | |
508 | ||
dc109497 | 509 | p_dev->socket = s; |
1da177e4 LT |
510 | p_dev->device_no = (s->device_count++); |
511 | p_dev->func = function; | |
512 | ||
513 | p_dev->dev.bus = &pcmcia_bus_type; | |
dc109497 | 514 | p_dev->dev.parent = s->dev.dev; |
1da177e4 LT |
515 | p_dev->dev.release = pcmcia_release_dev; |
516 | sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no); | |
517 | ||
518 | /* compat */ | |
519 | p_dev->client.client_magic = CLIENT_MAGIC; | |
dc109497 | 520 | p_dev->client.Socket = s; |
1da177e4 LT |
521 | p_dev->client.Function = function; |
522 | p_dev->client.state = CLIENT_UNBOUND; | |
523 | ||
524 | /* Add to the list in pcmcia_bus_socket */ | |
525 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
526 | list_add_tail(&p_dev->socket_device_list, &s->devices_list); | |
527 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
528 | ||
1ad275e3 DB |
529 | pcmcia_device_query(p_dev); |
530 | ||
1da177e4 LT |
531 | if (device_register(&p_dev->dev)) { |
532 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
533 | list_del(&p_dev->socket_device_list); | |
534 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
535 | ||
536 | goto err_free; | |
537 | } | |
538 | ||
539 | up(&device_add_lock); | |
540 | ||
541 | return p_dev; | |
542 | ||
543 | err_free: | |
544 | kfree(p_dev); | |
545 | s->device_count--; | |
546 | err_put: | |
547 | up(&device_add_lock); | |
dc109497 | 548 | pcmcia_put_socket(s); |
1da177e4 LT |
549 | |
550 | return NULL; | |
551 | } | |
552 | ||
553 | ||
554 | static int pcmcia_card_add(struct pcmcia_socket *s) | |
555 | { | |
556 | cisinfo_t cisinfo; | |
557 | cistpl_longlink_mfc_t mfc; | |
558 | unsigned int no_funcs, i; | |
559 | int ret = 0; | |
560 | ||
561 | if (!(s->resource_setup_done)) | |
562 | return -EAGAIN; /* try again, but later... */ | |
563 | ||
564 | pcmcia_validate_mem(s); | |
565 | ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo); | |
566 | if (ret || !cisinfo.Chains) { | |
567 | ds_dbg(0, "invalid CIS or invalid resources\n"); | |
568 | return -ENODEV; | |
569 | } | |
570 | ||
571 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) | |
572 | no_funcs = mfc.nfn; | |
573 | else | |
574 | no_funcs = 1; | |
575 | ||
576 | /* this doesn't handle multifunction devices on one pcmcia function | |
577 | * yet. */ | |
578 | for (i=0; i < no_funcs; i++) | |
dc109497 | 579 | pcmcia_device_add(s, i); |
1da177e4 LT |
580 | |
581 | return (ret); | |
582 | } | |
583 | ||
584 | ||
1ad275e3 DB |
585 | static void pcmcia_delayed_add_pseudo_device(void *data) |
586 | { | |
dc109497 | 587 | struct pcmcia_socket *s = data; |
1ad275e3 | 588 | pcmcia_device_add(s, 0); |
b5e43913 | 589 | s->pcmcia_state.device_add_pending = 0; |
1ad275e3 DB |
590 | } |
591 | ||
dc109497 | 592 | static inline void pcmcia_add_pseudo_device(struct pcmcia_socket *s) |
1ad275e3 | 593 | { |
b5e43913 | 594 | if (!s->pcmcia_state.device_add_pending) { |
1ad275e3 | 595 | schedule_work(&s->device_add); |
b5e43913 | 596 | s->pcmcia_state.device_add_pending = 1; |
1ad275e3 DB |
597 | } |
598 | return; | |
599 | } | |
600 | ||
e2f0b534 | 601 | static int pcmcia_requery(struct device *dev, void * _data) |
ff1fa9ef | 602 | { |
e2f0b534 DB |
603 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
604 | if (!p_dev->dev.driver) | |
605 | pcmcia_device_query(p_dev); | |
606 | ||
607 | return 0; | |
608 | } | |
609 | ||
610 | static void pcmcia_bus_rescan(struct pcmcia_socket *skt) | |
611 | { | |
612 | int no_devices=0; | |
613 | unsigned long flags; | |
614 | ||
ff1fa9ef | 615 | /* must be called with skt_sem held */ |
e2f0b534 | 616 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); |
dc109497 | 617 | if (list_empty(&skt->devices_list)) |
e2f0b534 DB |
618 | no_devices=1; |
619 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
620 | ||
621 | /* if no devices were added for this socket yet because of | |
622 | * missing resource information or other trouble, we need to | |
623 | * do this now. */ | |
624 | if (no_devices) { | |
625 | int ret = pcmcia_card_add(skt); | |
626 | if (ret) | |
627 | return; | |
628 | } | |
629 | ||
630 | /* some device information might have changed because of a CIS | |
631 | * update or because we can finally read it correctly... so | |
632 | * determine it again, overwriting old values if necessary. */ | |
633 | bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery); | |
634 | ||
635 | /* we re-scan all devices, not just the ones connected to this | |
636 | * socket. This does not matter, though. */ | |
a5b55778 | 637 | bus_rescan_devices(&pcmcia_bus_type); |
ff1fa9ef | 638 | } |
1ad275e3 DB |
639 | |
640 | static inline int pcmcia_devmatch(struct pcmcia_device *dev, | |
641 | struct pcmcia_device_id *did) | |
642 | { | |
643 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { | |
644 | if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) | |
645 | return 0; | |
646 | } | |
647 | ||
648 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { | |
649 | if ((!dev->has_card_id) || (dev->card_id != did->card_id)) | |
650 | return 0; | |
651 | } | |
652 | ||
653 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { | |
654 | if (dev->func != did->function) | |
655 | return 0; | |
656 | } | |
657 | ||
658 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { | |
659 | if (!dev->prod_id[0]) | |
660 | return 0; | |
661 | if (strcmp(did->prod_id[0], dev->prod_id[0])) | |
662 | return 0; | |
663 | } | |
664 | ||
665 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { | |
666 | if (!dev->prod_id[1]) | |
667 | return 0; | |
668 | if (strcmp(did->prod_id[1], dev->prod_id[1])) | |
669 | return 0; | |
670 | } | |
671 | ||
672 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { | |
673 | if (!dev->prod_id[2]) | |
674 | return 0; | |
675 | if (strcmp(did->prod_id[2], dev->prod_id[2])) | |
676 | return 0; | |
677 | } | |
678 | ||
679 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { | |
680 | if (!dev->prod_id[3]) | |
681 | return 0; | |
682 | if (strcmp(did->prod_id[3], dev->prod_id[3])) | |
683 | return 0; | |
684 | } | |
685 | ||
686 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { | |
687 | /* handle pseudo multifunction devices: | |
688 | * there are at most two pseudo multifunction devices. | |
689 | * if we're matching against the first, schedule a | |
690 | * call which will then check whether there are two | |
691 | * pseudo devices, and if not, add the second one. | |
692 | */ | |
693 | if (dev->device_no == 0) | |
dc109497 | 694 | pcmcia_add_pseudo_device(dev->socket); |
1ad275e3 DB |
695 | |
696 | if (dev->device_no != did->device_no) | |
697 | return 0; | |
698 | } | |
699 | ||
700 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { | |
701 | if ((!dev->has_func_id) || (dev->func_id != did->func_id)) | |
702 | return 0; | |
703 | ||
704 | /* if this is a pseudo-multi-function device, | |
705 | * we need explicit matches */ | |
706 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) | |
707 | return 0; | |
708 | if (dev->device_no) | |
709 | return 0; | |
710 | ||
711 | /* also, FUNC_ID matching needs to be activated by userspace | |
712 | * after it has re-checked that there is no possible module | |
713 | * with a prod_id/manf_id/card_id match. | |
714 | */ | |
715 | if (!dev->allow_func_id_match) | |
716 | return 0; | |
717 | } | |
718 | ||
ea7b3882 | 719 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { |
daa9517d DB |
720 | if (!dev->socket->fake_cis) |
721 | pcmcia_load_firmware(dev, did->cisfile); | |
722 | ||
723 | if (!dev->socket->fake_cis) | |
ea7b3882 | 724 | return 0; |
ea7b3882 DB |
725 | } |
726 | ||
f602ff7e DB |
727 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { |
728 | int i; | |
729 | for (i=0; i<4; i++) | |
730 | if (dev->prod_id[i]) | |
731 | return 0; | |
732 | if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) | |
733 | return 0; | |
734 | } | |
735 | ||
1ad275e3 DB |
736 | dev->dev.driver_data = (void *) did; |
737 | ||
738 | return 1; | |
739 | } | |
740 | ||
741 | ||
1da177e4 LT |
742 | static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) { |
743 | struct pcmcia_device * p_dev = to_pcmcia_dev(dev); | |
744 | struct pcmcia_driver * p_drv = to_pcmcia_drv(drv); | |
1ad275e3 | 745 | struct pcmcia_device_id *did = p_drv->id_table; |
1da177e4 LT |
746 | |
747 | /* matching by cardmgr */ | |
748 | if (p_dev->cardmgr == p_drv) | |
749 | return 1; | |
750 | ||
1ad275e3 DB |
751 | while (did && did->match_flags) { |
752 | if (pcmcia_devmatch(p_dev, did)) | |
753 | return 1; | |
754 | did++; | |
755 | } | |
756 | ||
1da177e4 LT |
757 | return 0; |
758 | } | |
759 | ||
840c2ac5 DB |
760 | #ifdef CONFIG_HOTPLUG |
761 | ||
762 | static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp, | |
763 | char *buffer, int buffer_size) | |
764 | { | |
765 | struct pcmcia_device *p_dev; | |
766 | int i, length = 0; | |
767 | u32 hash[4] = { 0, 0, 0, 0}; | |
768 | ||
769 | if (!dev) | |
770 | return -ENODEV; | |
771 | ||
772 | p_dev = to_pcmcia_dev(dev); | |
773 | ||
774 | /* calculate hashes */ | |
775 | for (i=0; i<4; i++) { | |
776 | if (!p_dev->prod_id[i]) | |
777 | continue; | |
778 | hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); | |
779 | } | |
780 | ||
781 | i = 0; | |
782 | ||
783 | if (add_hotplug_env_var(envp, num_envp, &i, | |
784 | buffer, buffer_size, &length, | |
785 | "SOCKET_NO=%u", | |
786 | p_dev->socket->sock)) | |
787 | return -ENOMEM; | |
788 | ||
789 | if (add_hotplug_env_var(envp, num_envp, &i, | |
790 | buffer, buffer_size, &length, | |
791 | "DEVICE_NO=%02X", | |
792 | p_dev->device_no)) | |
793 | return -ENOMEM; | |
794 | ||
795 | if (add_hotplug_env_var(envp, num_envp, &i, | |
796 | buffer, buffer_size, &length, | |
797 | "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" | |
798 | "pa%08Xpb%08Xpc%08Xpd%08X", | |
799 | p_dev->has_manf_id ? p_dev->manf_id : 0, | |
800 | p_dev->has_card_id ? p_dev->card_id : 0, | |
801 | p_dev->has_func_id ? p_dev->func_id : 0, | |
802 | p_dev->func, | |
803 | p_dev->device_no, | |
804 | hash[0], | |
805 | hash[1], | |
806 | hash[2], | |
807 | hash[3])) | |
808 | return -ENOMEM; | |
809 | ||
810 | envp[i] = NULL; | |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
815 | #else | |
816 | ||
817 | static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp, | |
818 | char *buffer, int buffer_size) | |
819 | { | |
820 | return -ENODEV; | |
821 | } | |
822 | ||
823 | #endif | |
824 | ||
1da177e4 LT |
825 | /************************ per-device sysfs output ***************************/ |
826 | ||
827 | #define pcmcia_device_attr(field, test, format) \ | |
e404e274 | 828 | static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
829 | { \ |
830 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
831 | return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \ | |
832 | } | |
833 | ||
834 | #define pcmcia_device_stringattr(name, field) \ | |
e404e274 | 835 | static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
836 | { \ |
837 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
838 | return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \ | |
839 | } | |
840 | ||
841 | pcmcia_device_attr(func, socket, "0x%02x\n"); | |
842 | pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); | |
843 | pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); | |
844 | pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); | |
845 | pcmcia_device_stringattr(prod_id1, prod_id[0]); | |
846 | pcmcia_device_stringattr(prod_id2, prod_id[1]); | |
847 | pcmcia_device_stringattr(prod_id3, prod_id[2]); | |
848 | pcmcia_device_stringattr(prod_id4, prod_id[3]); | |
849 | ||
a5b55778 DB |
850 | |
851 | static ssize_t pcmcia_store_allow_func_id_match (struct device * dev, struct device_attribute *attr, | |
852 | const char * buf, size_t count) | |
853 | { | |
854 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
855 | if (!count) | |
856 | return -EINVAL; | |
857 | ||
858 | down(&p_dev->socket->skt_sem); | |
859 | p_dev->allow_func_id_match = 1; | |
860 | up(&p_dev->socket->skt_sem); | |
861 | ||
862 | bus_rescan_devices(&pcmcia_bus_type); | |
863 | ||
864 | return count; | |
865 | } | |
866 | ||
1da177e4 LT |
867 | static struct device_attribute pcmcia_dev_attrs[] = { |
868 | __ATTR(function, 0444, func_show, NULL), | |
869 | __ATTR_RO(func_id), | |
870 | __ATTR_RO(manf_id), | |
871 | __ATTR_RO(card_id), | |
872 | __ATTR_RO(prod_id1), | |
873 | __ATTR_RO(prod_id2), | |
874 | __ATTR_RO(prod_id3), | |
875 | __ATTR_RO(prod_id4), | |
a5b55778 | 876 | __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), |
1da177e4 LT |
877 | __ATTR_NULL, |
878 | }; | |
879 | ||
880 | ||
1da177e4 LT |
881 | /*====================================================================== |
882 | ||
883 | The card status event handler. | |
884 | ||
885 | ======================================================================*/ | |
886 | ||
887 | struct send_event_data { | |
888 | struct pcmcia_socket *skt; | |
889 | event_t event; | |
890 | int priority; | |
891 | }; | |
892 | ||
893 | static int send_event_callback(struct device *dev, void * _data) | |
894 | { | |
895 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
896 | struct send_event_data *data = _data; | |
897 | ||
898 | /* we get called for all sockets, but may only pass the event | |
899 | * for drivers _on the affected socket_ */ | |
900 | if (p_dev->socket != data->skt) | |
901 | return 0; | |
902 | ||
903 | if (p_dev->client.state & (CLIENT_UNBOUND|CLIENT_STALE)) | |
904 | return 0; | |
905 | ||
906 | if (p_dev->client.EventMask & data->event) | |
907 | return EVENT(&p_dev->client, data->event, data->priority); | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
912 | static int send_event(struct pcmcia_socket *s, event_t event, int priority) | |
913 | { | |
1da177e4 | 914 | struct send_event_data private; |
1da177e4 LT |
915 | |
916 | private.skt = s; | |
917 | private.event = event; | |
918 | private.priority = priority; | |
919 | ||
dc109497 | 920 | return bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback); |
1da177e4 LT |
921 | } /* send_event */ |
922 | ||
923 | ||
924 | /* Normally, the event is passed to individual drivers after | |
925 | * informing userspace. Only for CS_EVENT_CARD_REMOVAL this | |
926 | * is inversed to maintain historic compatibility. | |
927 | */ | |
928 | ||
929 | static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) | |
930 | { | |
dc109497 | 931 | struct pcmcia_socket *s = pcmcia_get_socket(skt); |
1da177e4 LT |
932 | int ret = 0; |
933 | ||
934 | ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n", | |
dc109497 | 935 | event, priority, skt); |
1da177e4 LT |
936 | |
937 | switch (event) { | |
938 | ||
939 | case CS_EVENT_CARD_REMOVAL: | |
b5e43913 | 940 | s->pcmcia_state.present = 0; |
1da177e4 | 941 | send_event(skt, event, priority); |
dc109497 DB |
942 | unbind_request(skt); |
943 | handle_event(skt, event); | |
1da177e4 LT |
944 | break; |
945 | ||
946 | case CS_EVENT_CARD_INSERTION: | |
b5e43913 | 947 | s->pcmcia_state.present = 1; |
1da177e4 | 948 | pcmcia_card_add(skt); |
dc109497 | 949 | handle_event(skt, event); |
1da177e4 LT |
950 | break; |
951 | ||
952 | case CS_EVENT_EJECTION_REQUEST: | |
953 | ret = send_event(skt, event, priority); | |
954 | break; | |
955 | ||
956 | default: | |
dc109497 | 957 | handle_event(skt, event); |
1da177e4 LT |
958 | send_event(skt, event, priority); |
959 | break; | |
960 | } | |
961 | ||
dc109497 DB |
962 | pcmcia_put_socket(s); |
963 | ||
1da177e4 LT |
964 | return 0; |
965 | } /* ds_event */ | |
966 | ||
967 | ||
1da177e4 LT |
968 | |
969 | int pcmcia_register_client(client_handle_t *handle, client_reg_t *req) | |
970 | { | |
971 | client_t *client = NULL; | |
dc109497 | 972 | struct pcmcia_socket *s = NULL; |
1da177e4 LT |
973 | struct pcmcia_device *p_dev = NULL; |
974 | ||
975 | /* Look for unbound client with matching dev_info */ | |
976 | down_read(&pcmcia_socket_list_rwsem); | |
977 | list_for_each_entry(s, &pcmcia_socket_list, socket_list) { | |
978 | unsigned long flags; | |
979 | ||
980 | if (s->state & SOCKET_CARDBUS) | |
981 | continue; | |
982 | ||
dc109497 DB |
983 | s = pcmcia_get_socket(s); |
984 | if (!s) | |
1da177e4 LT |
985 | continue; |
986 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
dc109497 | 987 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { |
1da177e4 LT |
988 | struct pcmcia_driver *p_drv; |
989 | p_dev = pcmcia_get_dev(p_dev); | |
990 | if (!p_dev) | |
991 | continue; | |
992 | if (!(p_dev->client.state & CLIENT_UNBOUND) || | |
993 | (!p_dev->dev.driver)) { | |
994 | pcmcia_put_dev(p_dev); | |
995 | continue; | |
996 | } | |
997 | p_drv = to_pcmcia_drv(p_dev->dev.driver); | |
998 | if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) { | |
999 | client = &p_dev->client; | |
1000 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1001 | goto found; | |
1002 | } | |
1003 | pcmcia_put_dev(p_dev); | |
1004 | } | |
1005 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
dc109497 | 1006 | pcmcia_put_socket(s); |
1da177e4 LT |
1007 | } |
1008 | found: | |
1009 | up_read(&pcmcia_socket_list_rwsem); | |
1010 | if (!p_dev || !client) | |
1011 | return -ENODEV; | |
1012 | ||
dc109497 | 1013 | pcmcia_put_socket(s); /* safe, as we already hold a reference from bind_device */ |
1da177e4 LT |
1014 | |
1015 | *handle = client; | |
1016 | client->state &= ~CLIENT_UNBOUND; | |
1017 | client->Socket = s; | |
1018 | client->EventMask = req->EventMask; | |
1019 | client->event_handler = req->event_handler; | |
1020 | client->event_callback_args = req->event_callback_args; | |
1021 | client->event_callback_args.client_handle = client; | |
1022 | ||
1023 | if (s->state & SOCKET_CARDBUS) | |
1024 | client->state |= CLIENT_CARDBUS; | |
1025 | ||
1026 | if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0) && | |
1027 | (client->Function != BIND_FN_ALL)) { | |
1028 | cistpl_longlink_mfc_t mfc; | |
1029 | if (pccard_read_tuple(s, client->Function, CISTPL_LONGLINK_MFC, &mfc) | |
1030 | == CS_SUCCESS) | |
1031 | s->functions = mfc.nfn; | |
1032 | else | |
1033 | s->functions = 1; | |
1034 | s->config = kmalloc(sizeof(config_t) * s->functions, | |
1035 | GFP_KERNEL); | |
1036 | if (!s->config) | |
1037 | goto out_no_resource; | |
1038 | memset(s->config, 0, sizeof(config_t) * s->functions); | |
1039 | } | |
1040 | ||
1041 | ds_dbg(1, "register_client(): client 0x%p, dev %s\n", | |
1042 | client, p_dev->dev.bus_id); | |
1043 | if (client->EventMask & CS_EVENT_REGISTRATION_COMPLETE) | |
1044 | EVENT(client, CS_EVENT_REGISTRATION_COMPLETE, CS_EVENT_PRI_LOW); | |
1045 | ||
1046 | if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) { | |
1047 | if (client->EventMask & CS_EVENT_CARD_INSERTION) | |
1048 | EVENT(client, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); | |
1049 | } | |
1050 | ||
1051 | return CS_SUCCESS; | |
1052 | ||
1053 | out_no_resource: | |
1054 | pcmcia_put_dev(p_dev); | |
1055 | return CS_OUT_OF_RESOURCE; | |
1056 | } /* register_client */ | |
1057 | EXPORT_SYMBOL(pcmcia_register_client); | |
1058 | ||
1059 | ||
1da177e4 LT |
1060 | /* unbind _all_ devices attached to a given pcmcia_bus_socket. The |
1061 | * drivers have been called with EVENT_CARD_REMOVAL before. | |
1062 | */ | |
dc109497 | 1063 | static int unbind_request(struct pcmcia_socket *s) |
1da177e4 LT |
1064 | { |
1065 | struct pcmcia_device *p_dev; | |
1066 | unsigned long flags; | |
1067 | ||
dc109497 | 1068 | ds_dbg(2, "unbind_request(%d)\n", s->sock); |
1da177e4 LT |
1069 | |
1070 | s->device_count = 0; | |
1071 | ||
1072 | for (;;) { | |
1073 | /* unregister all pcmcia_devices registered with this socket*/ | |
1074 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
1075 | if (list_empty(&s->devices_list)) { | |
1076 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1077 | return 0; | |
1078 | } | |
1079 | p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list); | |
1080 | list_del(&p_dev->socket_device_list); | |
1081 | p_dev->client.state |= CLIENT_STALE; | |
1082 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1083 | ||
1084 | device_unregister(&p_dev->dev); | |
1085 | } | |
1086 | ||
1087 | return 0; | |
1088 | } /* unbind_request */ | |
1089 | ||
1090 | int pcmcia_deregister_client(client_handle_t handle) | |
1091 | { | |
1092 | struct pcmcia_socket *s; | |
1093 | int i; | |
1094 | struct pcmcia_device *p_dev = handle_to_pdev(handle); | |
1095 | ||
1096 | if (CHECK_HANDLE(handle)) | |
1097 | return CS_BAD_HANDLE; | |
1098 | ||
1099 | s = SOCKET(handle); | |
1100 | ds_dbg(1, "deregister_client(%p)\n", handle); | |
1101 | ||
1102 | if (handle->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED)) | |
1103 | goto warn_out; | |
1104 | for (i = 0; i < MAX_WIN; i++) | |
1105 | if (handle->state & CLIENT_WIN_REQ(i)) | |
1106 | goto warn_out; | |
1107 | ||
1108 | if (handle->state & CLIENT_STALE) { | |
1109 | handle->client_magic = 0; | |
1110 | handle->state &= ~CLIENT_STALE; | |
1111 | pcmcia_put_dev(p_dev); | |
1112 | } else { | |
1113 | handle->state = CLIENT_UNBOUND; | |
1114 | handle->event_handler = NULL; | |
1115 | } | |
1116 | ||
1117 | return CS_SUCCESS; | |
1118 | warn_out: | |
1119 | printk(KERN_WARNING "ds: deregister_client was called too early.\n"); | |
1120 | return CS_IN_USE; | |
1121 | } /* deregister_client */ | |
1122 | EXPORT_SYMBOL(pcmcia_deregister_client); | |
1123 | ||
90c6cdd1 DB |
1124 | static struct pcmcia_callback pcmcia_bus_callback = { |
1125 | .owner = THIS_MODULE, | |
1126 | .event = ds_event, | |
1127 | .requery = pcmcia_bus_rescan, | |
1128 | }; | |
1129 | ||
1da177e4 LT |
1130 | static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev) |
1131 | { | |
1132 | struct pcmcia_socket *socket = class_get_devdata(class_dev); | |
1da177e4 LT |
1133 | int ret; |
1134 | ||
dc109497 DB |
1135 | socket = pcmcia_get_socket(socket); |
1136 | if (!socket) { | |
1da177e4 | 1137 | printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket); |
1da177e4 LT |
1138 | return -ENODEV; |
1139 | } | |
1140 | ||
1da177e4 LT |
1141 | /* |
1142 | * Ugly. But we want to wait for the socket threads to have started up. | |
1143 | * We really should let the drivers themselves drive some of this.. | |
1144 | */ | |
1145 | msleep(250); | |
1146 | ||
e7a480d2 | 1147 | #ifdef CONFIG_PCMCIA_IOCTL |
dc109497 | 1148 | init_waitqueue_head(&socket->queue); |
e7a480d2 | 1149 | #endif |
dc109497 DB |
1150 | INIT_LIST_HEAD(&socket->devices_list); |
1151 | INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket); | |
1152 | memset(&socket->pcmcia_state, 0, sizeof(u8)); | |
1153 | socket->device_count = 0; | |
1da177e4 | 1154 | |
90c6cdd1 | 1155 | ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); |
1da177e4 LT |
1156 | if (ret) { |
1157 | printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket); | |
dc109497 | 1158 | pcmcia_put_socket(socket); |
1da177e4 LT |
1159 | return (ret); |
1160 | } | |
1161 | ||
1162 | return 0; | |
1163 | } | |
1164 | ||
1da177e4 LT |
1165 | static void pcmcia_bus_remove_socket(struct class_device *class_dev) |
1166 | { | |
1167 | struct pcmcia_socket *socket = class_get_devdata(class_dev); | |
1168 | ||
dc109497 | 1169 | if (!socket) |
1da177e4 LT |
1170 | return; |
1171 | ||
dc109497 | 1172 | socket->pcmcia_state.dead = 1; |
1da177e4 LT |
1173 | pccard_register_pcmcia(socket, NULL); |
1174 | ||
dc109497 | 1175 | pcmcia_put_socket(socket); |
1da177e4 LT |
1176 | |
1177 | return; | |
1178 | } | |
1179 | ||
1180 | ||
1181 | /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ | |
1182 | static struct class_interface pcmcia_bus_interface = { | |
1183 | .class = &pcmcia_socket_class, | |
1184 | .add = &pcmcia_bus_add_socket, | |
1185 | .remove = &pcmcia_bus_remove_socket, | |
1186 | }; | |
1187 | ||
1188 | ||
e7a480d2 | 1189 | struct bus_type pcmcia_bus_type = { |
1da177e4 | 1190 | .name = "pcmcia", |
840c2ac5 | 1191 | .hotplug = pcmcia_bus_hotplug, |
1da177e4 LT |
1192 | .match = pcmcia_bus_match, |
1193 | .dev_attrs = pcmcia_dev_attrs, | |
1194 | }; | |
1da177e4 LT |
1195 | |
1196 | ||
1197 | static int __init init_pcmcia_bus(void) | |
1198 | { | |
1da177e4 LT |
1199 | spin_lock_init(&pcmcia_dev_list_lock); |
1200 | ||
1201 | bus_register(&pcmcia_bus_type); | |
1202 | class_interface_register(&pcmcia_bus_interface); | |
1203 | ||
e7a480d2 | 1204 | pcmcia_setup_ioctl(); |
1da177e4 LT |
1205 | |
1206 | return 0; | |
1207 | } | |
1208 | fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that | |
1209 | * pcmcia_socket_class is already registered */ | |
1210 | ||
1211 | ||
1212 | static void __exit exit_pcmcia_bus(void) | |
1213 | { | |
e7a480d2 | 1214 | pcmcia_cleanup_ioctl(); |
1da177e4 | 1215 | |
e7a480d2 | 1216 | class_interface_unregister(&pcmcia_bus_interface); |
1da177e4 LT |
1217 | |
1218 | bus_unregister(&pcmcia_bus_type); | |
1219 | } | |
1220 | module_exit(exit_pcmcia_bus); | |
1221 | ||
1222 | ||
1da177e4 | 1223 | MODULE_ALIAS("ds"); |