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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 | |
13 | * (C) 2003 - 2004 Dominik Brodowski | |
14 | */ | |
15 | ||
16 | #include <linux/config.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/moduleparam.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/major.h> | |
22 | #include <linux/string.h> | |
23 | #include <linux/errno.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/mm.h> | |
26 | #include <linux/fcntl.h> | |
27 | #include <linux/sched.h> | |
28 | #include <linux/smp_lock.h> | |
29 | #include <linux/timer.h> | |
30 | #include <linux/ioctl.h> | |
31 | #include <linux/proc_fs.h> | |
32 | #include <linux/poll.h> | |
33 | #include <linux/pci.h> | |
34 | #include <linux/list.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/kref.h> | |
37 | #include <linux/workqueue.h> | |
840c2ac5 | 38 | #include <linux/crc32.h> |
daa9517d | 39 | #include <linux/firmware.h> |
1da177e4 LT |
40 | |
41 | #include <asm/atomic.h> | |
42 | ||
43 | #define IN_CARD_SERVICES | |
44 | #include <pcmcia/version.h> | |
45 | #include <pcmcia/cs_types.h> | |
46 | #include <pcmcia/cs.h> | |
47 | #include <pcmcia/bulkmem.h> | |
48 | #include <pcmcia/cistpl.h> | |
49 | #include <pcmcia/ds.h> | |
50 | #include <pcmcia/ss.h> | |
51 | ||
52 | #include "cs_internal.h" | |
e7a480d2 | 53 | #include "ds_internal.h" |
1da177e4 LT |
54 | |
55 | /*====================================================================*/ | |
56 | ||
57 | /* Module parameters */ | |
58 | ||
59 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
60 | MODULE_DESCRIPTION("PCMCIA Driver Services"); | |
61 | MODULE_LICENSE("GPL"); | |
62 | ||
63 | #ifdef DEBUG | |
e7a480d2 | 64 | int ds_pc_debug; |
1da177e4 LT |
65 | |
66 | module_param_named(pc_debug, ds_pc_debug, int, 0644); | |
67 | ||
68 | #define ds_dbg(lvl, fmt, arg...) do { \ | |
69 | if (ds_pc_debug > (lvl)) \ | |
70 | printk(KERN_DEBUG "ds: " fmt , ## arg); \ | |
71 | } while (0) | |
72 | #else | |
73 | #define ds_dbg(lvl, fmt, arg...) do { } while (0) | |
74 | #endif | |
75 | ||
e7a480d2 | 76 | spinlock_t pcmcia_dev_list_lock; |
1da177e4 LT |
77 | |
78 | static int unbind_request(struct pcmcia_bus_socket *s); | |
79 | ||
80 | /*====================================================================*/ | |
81 | ||
82 | /* code which was in cs.c before */ | |
83 | ||
84 | /* String tables for error messages */ | |
85 | ||
86 | typedef struct lookup_t { | |
87 | int key; | |
88 | char *msg; | |
89 | } lookup_t; | |
90 | ||
91 | static const lookup_t error_table[] = { | |
92 | { CS_SUCCESS, "Operation succeeded" }, | |
93 | { CS_BAD_ADAPTER, "Bad adapter" }, | |
94 | { CS_BAD_ATTRIBUTE, "Bad attribute", }, | |
95 | { CS_BAD_BASE, "Bad base address" }, | |
96 | { CS_BAD_EDC, "Bad EDC" }, | |
97 | { CS_BAD_IRQ, "Bad IRQ" }, | |
98 | { CS_BAD_OFFSET, "Bad offset" }, | |
99 | { CS_BAD_PAGE, "Bad page number" }, | |
100 | { CS_READ_FAILURE, "Read failure" }, | |
101 | { CS_BAD_SIZE, "Bad size" }, | |
102 | { CS_BAD_SOCKET, "Bad socket" }, | |
103 | { CS_BAD_TYPE, "Bad type" }, | |
104 | { CS_BAD_VCC, "Bad Vcc" }, | |
105 | { CS_BAD_VPP, "Bad Vpp" }, | |
106 | { CS_BAD_WINDOW, "Bad window" }, | |
107 | { CS_WRITE_FAILURE, "Write failure" }, | |
108 | { CS_NO_CARD, "No card present" }, | |
109 | { CS_UNSUPPORTED_FUNCTION, "Usupported function" }, | |
110 | { CS_UNSUPPORTED_MODE, "Unsupported mode" }, | |
111 | { CS_BAD_SPEED, "Bad speed" }, | |
112 | { CS_BUSY, "Resource busy" }, | |
113 | { CS_GENERAL_FAILURE, "General failure" }, | |
114 | { CS_WRITE_PROTECTED, "Write protected" }, | |
115 | { CS_BAD_ARG_LENGTH, "Bad argument length" }, | |
116 | { CS_BAD_ARGS, "Bad arguments" }, | |
117 | { CS_CONFIGURATION_LOCKED, "Configuration locked" }, | |
118 | { CS_IN_USE, "Resource in use" }, | |
119 | { CS_NO_MORE_ITEMS, "No more items" }, | |
120 | { CS_OUT_OF_RESOURCE, "Out of resource" }, | |
121 | { CS_BAD_HANDLE, "Bad handle" }, | |
122 | { CS_BAD_TUPLE, "Bad CIS tuple" } | |
123 | }; | |
124 | ||
125 | ||
126 | static const lookup_t service_table[] = { | |
127 | { AccessConfigurationRegister, "AccessConfigurationRegister" }, | |
128 | { AddSocketServices, "AddSocketServices" }, | |
129 | { AdjustResourceInfo, "AdjustResourceInfo" }, | |
130 | { CheckEraseQueue, "CheckEraseQueue" }, | |
131 | { CloseMemory, "CloseMemory" }, | |
132 | { DeregisterClient, "DeregisterClient" }, | |
133 | { DeregisterEraseQueue, "DeregisterEraseQueue" }, | |
134 | { GetCardServicesInfo, "GetCardServicesInfo" }, | |
135 | { GetClientInfo, "GetClientInfo" }, | |
136 | { GetConfigurationInfo, "GetConfigurationInfo" }, | |
137 | { GetEventMask, "GetEventMask" }, | |
138 | { GetFirstClient, "GetFirstClient" }, | |
139 | { GetFirstRegion, "GetFirstRegion" }, | |
140 | { GetFirstTuple, "GetFirstTuple" }, | |
141 | { GetNextClient, "GetNextClient" }, | |
142 | { GetNextRegion, "GetNextRegion" }, | |
143 | { GetNextTuple, "GetNextTuple" }, | |
144 | { GetStatus, "GetStatus" }, | |
145 | { GetTupleData, "GetTupleData" }, | |
146 | { MapMemPage, "MapMemPage" }, | |
147 | { ModifyConfiguration, "ModifyConfiguration" }, | |
148 | { ModifyWindow, "ModifyWindow" }, | |
149 | { OpenMemory, "OpenMemory" }, | |
150 | { ParseTuple, "ParseTuple" }, | |
151 | { ReadMemory, "ReadMemory" }, | |
152 | { RegisterClient, "RegisterClient" }, | |
153 | { RegisterEraseQueue, "RegisterEraseQueue" }, | |
154 | { RegisterMTD, "RegisterMTD" }, | |
155 | { ReleaseConfiguration, "ReleaseConfiguration" }, | |
156 | { ReleaseIO, "ReleaseIO" }, | |
157 | { ReleaseIRQ, "ReleaseIRQ" }, | |
158 | { ReleaseWindow, "ReleaseWindow" }, | |
159 | { RequestConfiguration, "RequestConfiguration" }, | |
160 | { RequestIO, "RequestIO" }, | |
161 | { RequestIRQ, "RequestIRQ" }, | |
162 | { RequestSocketMask, "RequestSocketMask" }, | |
163 | { RequestWindow, "RequestWindow" }, | |
164 | { ResetCard, "ResetCard" }, | |
165 | { SetEventMask, "SetEventMask" }, | |
166 | { ValidateCIS, "ValidateCIS" }, | |
167 | { WriteMemory, "WriteMemory" }, | |
168 | { BindDevice, "BindDevice" }, | |
169 | { BindMTD, "BindMTD" }, | |
170 | { ReportError, "ReportError" }, | |
171 | { SuspendCard, "SuspendCard" }, | |
172 | { ResumeCard, "ResumeCard" }, | |
173 | { EjectCard, "EjectCard" }, | |
174 | { InsertCard, "InsertCard" }, | |
175 | { ReplaceCIS, "ReplaceCIS" } | |
176 | }; | |
177 | ||
178 | ||
e94e15f7 | 179 | static int pcmcia_report_error(client_handle_t handle, error_info_t *err) |
1da177e4 LT |
180 | { |
181 | int i; | |
182 | char *serv; | |
183 | ||
184 | if (CHECK_HANDLE(handle)) | |
185 | printk(KERN_NOTICE); | |
186 | else { | |
187 | struct pcmcia_device *p_dev = handle_to_pdev(handle); | |
188 | printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id); | |
189 | } | |
190 | ||
191 | for (i = 0; i < ARRAY_SIZE(service_table); i++) | |
192 | if (service_table[i].key == err->func) | |
193 | break; | |
194 | if (i < ARRAY_SIZE(service_table)) | |
195 | serv = service_table[i].msg; | |
196 | else | |
197 | serv = "Unknown service number"; | |
198 | ||
199 | for (i = 0; i < ARRAY_SIZE(error_table); i++) | |
200 | if (error_table[i].key == err->retcode) | |
201 | break; | |
202 | if (i < ARRAY_SIZE(error_table)) | |
203 | printk("%s: %s\n", serv, error_table[i].msg); | |
204 | else | |
205 | printk("%s: Unknown error code %#x\n", serv, err->retcode); | |
206 | ||
207 | return CS_SUCCESS; | |
208 | } /* report_error */ | |
1da177e4 LT |
209 | |
210 | /* end of code which was in cs.c before */ | |
211 | ||
212 | /*======================================================================*/ | |
213 | ||
214 | void cs_error(client_handle_t handle, int func, int ret) | |
215 | { | |
216 | error_info_t err = { func, ret }; | |
217 | pcmcia_report_error(handle, &err); | |
218 | } | |
219 | EXPORT_SYMBOL(cs_error); | |
220 | ||
23a83bfe DB |
221 | |
222 | static void pcmcia_check_driver(struct pcmcia_driver *p_drv) | |
223 | { | |
224 | struct pcmcia_device_id *did = p_drv->id_table; | |
225 | unsigned int i; | |
226 | u32 hash; | |
227 | ||
228 | while (did && did->match_flags) { | |
229 | for (i=0; i<4; i++) { | |
230 | if (!did->prod_id[i]) | |
231 | continue; | |
232 | ||
233 | hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i])); | |
234 | if (hash == did->prod_id_hash[i]) | |
235 | continue; | |
236 | ||
237 | printk(KERN_DEBUG "pcmcia: %s: invalid hash for " | |
238 | "product string \"%s\": is 0x%x, should " | |
239 | "be 0x%x\n", p_drv->drv.name, did->prod_id[i], | |
240 | did->prod_id_hash[i], hash); | |
5085cb26 DB |
241 | printk(KERN_DEBUG "pcmcia: see " |
242 | "Documentation/pcmcia/devicetable.txt for " | |
243 | "details\n"); | |
23a83bfe DB |
244 | } |
245 | did++; | |
246 | } | |
247 | ||
248 | return; | |
249 | } | |
250 | ||
daa9517d DB |
251 | |
252 | #ifdef CONFIG_PCMCIA_LOAD_CIS | |
253 | ||
254 | /** | |
255 | * pcmcia_load_firmware - load CIS from userspace if device-provided is broken | |
256 | * @dev - the pcmcia device which needs a CIS override | |
257 | * @filename - requested filename in /lib/firmware/cis/ | |
258 | * | |
259 | * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if | |
260 | * the one provided by the card is broken. The firmware files reside in | |
261 | * /lib/firmware/cis/ in userspace. | |
262 | */ | |
263 | static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) | |
264 | { | |
265 | struct pcmcia_socket *s = dev->socket; | |
266 | const struct firmware *fw; | |
267 | char path[20]; | |
268 | int ret=-ENOMEM; | |
269 | cisdump_t *cis; | |
270 | ||
271 | if (!filename) | |
272 | return -EINVAL; | |
273 | ||
274 | ds_dbg(1, "trying to load firmware %s\n", filename); | |
275 | ||
276 | if (strlen(filename) > 14) | |
277 | return -EINVAL; | |
278 | ||
279 | snprintf(path, 20, "%s", filename); | |
280 | ||
281 | if (request_firmware(&fw, path, &dev->dev) == 0) { | |
282 | if (fw->size >= CISTPL_MAX_CIS_SIZE) | |
283 | goto release; | |
284 | ||
285 | cis = kmalloc(sizeof(cisdump_t), GFP_KERNEL); | |
286 | if (!cis) | |
287 | goto release; | |
288 | ||
289 | memset(cis, 0, sizeof(cisdump_t)); | |
290 | ||
291 | cis->Length = fw->size + 1; | |
292 | memcpy(cis->Data, fw->data, fw->size); | |
293 | ||
294 | if (!pcmcia_replace_cis(s, cis)) | |
295 | ret = 0; | |
296 | } | |
297 | release: | |
298 | release_firmware(fw); | |
299 | ||
300 | return (ret); | |
301 | } | |
302 | ||
303 | #else /* !CONFIG_PCMCIA_LOAD_CIS */ | |
304 | ||
305 | static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) | |
306 | { | |
307 | return -ENODEV; | |
308 | } | |
309 | ||
310 | #endif | |
311 | ||
312 | ||
1da177e4 LT |
313 | /*======================================================================*/ |
314 | ||
1da177e4 | 315 | |
e7a480d2 | 316 | void pcmcia_release_bus_socket(struct kref *refcount) |
1da177e4 LT |
317 | { |
318 | struct pcmcia_bus_socket *s = container_of(refcount, struct pcmcia_bus_socket, refcount); | |
319 | pcmcia_put_socket(s->parent); | |
320 | kfree(s); | |
321 | } | |
322 | ||
e7a480d2 | 323 | void pcmcia_put_bus_socket(struct pcmcia_bus_socket *s) |
1da177e4 LT |
324 | { |
325 | kref_put(&s->refcount, pcmcia_release_bus_socket); | |
326 | } | |
327 | ||
e7a480d2 | 328 | struct pcmcia_bus_socket *pcmcia_get_bus_socket(struct pcmcia_bus_socket *s) |
1da177e4 LT |
329 | { |
330 | kref_get(&s->refcount); | |
331 | return (s); | |
332 | } | |
333 | ||
334 | /** | |
335 | * pcmcia_register_driver - register a PCMCIA driver with the bus core | |
336 | * | |
337 | * Registers a PCMCIA driver with the PCMCIA bus core. | |
338 | */ | |
339 | static int pcmcia_device_probe(struct device *dev); | |
340 | static int pcmcia_device_remove(struct device * dev); | |
341 | ||
342 | int pcmcia_register_driver(struct pcmcia_driver *driver) | |
343 | { | |
344 | if (!driver) | |
345 | return -EINVAL; | |
346 | ||
23a83bfe DB |
347 | pcmcia_check_driver(driver); |
348 | ||
1da177e4 LT |
349 | /* initialize common fields */ |
350 | driver->drv.bus = &pcmcia_bus_type; | |
351 | driver->drv.owner = driver->owner; | |
352 | driver->drv.probe = pcmcia_device_probe; | |
353 | driver->drv.remove = pcmcia_device_remove; | |
354 | ||
355 | return driver_register(&driver->drv); | |
356 | } | |
357 | EXPORT_SYMBOL(pcmcia_register_driver); | |
358 | ||
359 | /** | |
360 | * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core | |
361 | */ | |
362 | void pcmcia_unregister_driver(struct pcmcia_driver *driver) | |
363 | { | |
364 | driver_unregister(&driver->drv); | |
365 | } | |
366 | EXPORT_SYMBOL(pcmcia_unregister_driver); | |
367 | ||
1da177e4 LT |
368 | |
369 | /* pcmcia_device handling */ | |
370 | ||
e7a480d2 | 371 | struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev) |
1da177e4 LT |
372 | { |
373 | struct device *tmp_dev; | |
374 | tmp_dev = get_device(&p_dev->dev); | |
375 | if (!tmp_dev) | |
376 | return NULL; | |
377 | return to_pcmcia_dev(tmp_dev); | |
378 | } | |
379 | ||
e7a480d2 | 380 | void pcmcia_put_dev(struct pcmcia_device *p_dev) |
1da177e4 LT |
381 | { |
382 | if (p_dev) | |
383 | put_device(&p_dev->dev); | |
384 | } | |
385 | ||
386 | static void pcmcia_release_dev(struct device *dev) | |
387 | { | |
388 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
389 | ds_dbg(1, "releasing dev %p\n", p_dev); | |
390 | pcmcia_put_bus_socket(p_dev->socket->pcmcia); | |
391 | kfree(p_dev); | |
392 | } | |
393 | ||
394 | ||
395 | static int pcmcia_device_probe(struct device * dev) | |
396 | { | |
397 | struct pcmcia_device *p_dev; | |
398 | struct pcmcia_driver *p_drv; | |
399 | int ret = 0; | |
400 | ||
401 | dev = get_device(dev); | |
402 | if (!dev) | |
403 | return -ENODEV; | |
404 | ||
405 | p_dev = to_pcmcia_dev(dev); | |
406 | p_drv = to_pcmcia_drv(dev->driver); | |
407 | ||
408 | if (!try_module_get(p_drv->owner)) { | |
409 | ret = -EINVAL; | |
410 | goto put_dev; | |
411 | } | |
412 | ||
413 | if (p_drv->attach) { | |
414 | p_dev->instance = p_drv->attach(); | |
415 | if ((!p_dev->instance) || (p_dev->client.state & CLIENT_UNBOUND)) { | |
416 | printk(KERN_NOTICE "ds: unable to create instance " | |
417 | "of '%s'!\n", p_drv->drv.name); | |
418 | ret = -EINVAL; | |
419 | } | |
420 | } | |
421 | ||
422 | if (ret) | |
423 | module_put(p_drv->owner); | |
424 | put_dev: | |
425 | if ((ret) || !(p_drv->attach)) | |
426 | put_device(dev); | |
427 | return (ret); | |
428 | } | |
429 | ||
430 | ||
431 | static int pcmcia_device_remove(struct device * dev) | |
432 | { | |
433 | struct pcmcia_device *p_dev; | |
434 | struct pcmcia_driver *p_drv; | |
435 | ||
436 | /* detach the "instance" */ | |
437 | p_dev = to_pcmcia_dev(dev); | |
438 | p_drv = to_pcmcia_drv(dev->driver); | |
439 | ||
440 | if (p_drv) { | |
441 | if ((p_drv->detach) && (p_dev->instance)) { | |
442 | p_drv->detach(p_dev->instance); | |
443 | /* from pcmcia_probe_device */ | |
444 | put_device(&p_dev->dev); | |
445 | } | |
446 | module_put(p_drv->owner); | |
447 | } | |
448 | ||
449 | return 0; | |
450 | } | |
451 | ||
452 | ||
453 | ||
454 | /* | |
455 | * pcmcia_device_query -- determine information about a pcmcia device | |
456 | */ | |
457 | static int pcmcia_device_query(struct pcmcia_device *p_dev) | |
458 | { | |
459 | cistpl_manfid_t manf_id; | |
460 | cistpl_funcid_t func_id; | |
461 | cistpl_vers_1_t vers1; | |
462 | unsigned int i; | |
463 | ||
464 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
465 | CISTPL_MANFID, &manf_id)) { | |
466 | p_dev->manf_id = manf_id.manf; | |
467 | p_dev->card_id = manf_id.card; | |
468 | p_dev->has_manf_id = 1; | |
469 | p_dev->has_card_id = 1; | |
470 | } | |
471 | ||
472 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
473 | CISTPL_FUNCID, &func_id)) { | |
474 | p_dev->func_id = func_id.func; | |
475 | p_dev->has_func_id = 1; | |
476 | } else { | |
477 | /* rule of thumb: cards with no FUNCID, but with | |
478 | * common memory device geometry information, are | |
479 | * probably memory cards (from pcmcia-cs) */ | |
480 | cistpl_device_geo_t devgeo; | |
481 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
482 | CISTPL_DEVICE_GEO, &devgeo)) { | |
483 | ds_dbg(0, "mem device geometry probably means " | |
484 | "FUNCID_MEMORY\n"); | |
485 | p_dev->func_id = CISTPL_FUNCID_MEMORY; | |
486 | p_dev->has_func_id = 1; | |
487 | } | |
488 | } | |
489 | ||
490 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1, | |
491 | &vers1)) { | |
492 | for (i=0; i < vers1.ns; i++) { | |
493 | char *tmp; | |
494 | unsigned int length; | |
495 | ||
496 | tmp = vers1.str + vers1.ofs[i]; | |
497 | ||
498 | length = strlen(tmp) + 1; | |
499 | if ((length < 3) || (length > 255)) | |
500 | continue; | |
501 | ||
502 | p_dev->prod_id[i] = kmalloc(sizeof(char) * length, | |
503 | GFP_KERNEL); | |
504 | if (!p_dev->prod_id[i]) | |
505 | continue; | |
506 | ||
507 | p_dev->prod_id[i] = strncpy(p_dev->prod_id[i], | |
508 | tmp, length); | |
509 | } | |
510 | } | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
515 | ||
516 | /* device_add_lock is needed to avoid double registration by cardmgr and kernel. | |
517 | * Serializes pcmcia_device_add; will most likely be removed in future. | |
518 | * | |
519 | * While it has the caveat that adding new PCMCIA devices inside(!) device_register() | |
520 | * won't work, this doesn't matter much at the moment: the driver core doesn't | |
521 | * support it either. | |
522 | */ | |
523 | static DECLARE_MUTEX(device_add_lock); | |
524 | ||
e7a480d2 | 525 | struct pcmcia_device * pcmcia_device_add(struct pcmcia_bus_socket *s, unsigned int function) |
1da177e4 LT |
526 | { |
527 | struct pcmcia_device *p_dev; | |
528 | unsigned long flags; | |
529 | ||
530 | s = pcmcia_get_bus_socket(s); | |
531 | if (!s) | |
532 | return NULL; | |
533 | ||
534 | down(&device_add_lock); | |
535 | ||
1ad275e3 DB |
536 | /* max of 2 devices per card */ |
537 | if (s->device_count == 2) | |
538 | goto err_put; | |
539 | ||
1da177e4 LT |
540 | p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL); |
541 | if (!p_dev) | |
542 | goto err_put; | |
543 | memset(p_dev, 0, sizeof(struct pcmcia_device)); | |
544 | ||
545 | p_dev->socket = s->parent; | |
546 | p_dev->device_no = (s->device_count++); | |
547 | p_dev->func = function; | |
548 | ||
549 | p_dev->dev.bus = &pcmcia_bus_type; | |
550 | p_dev->dev.parent = s->parent->dev.dev; | |
551 | p_dev->dev.release = pcmcia_release_dev; | |
552 | sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no); | |
553 | ||
554 | /* compat */ | |
555 | p_dev->client.client_magic = CLIENT_MAGIC; | |
556 | p_dev->client.Socket = s->parent; | |
557 | p_dev->client.Function = function; | |
558 | p_dev->client.state = CLIENT_UNBOUND; | |
559 | ||
560 | /* Add to the list in pcmcia_bus_socket */ | |
561 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
562 | list_add_tail(&p_dev->socket_device_list, &s->devices_list); | |
563 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
564 | ||
1ad275e3 DB |
565 | pcmcia_device_query(p_dev); |
566 | ||
1da177e4 LT |
567 | if (device_register(&p_dev->dev)) { |
568 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
569 | list_del(&p_dev->socket_device_list); | |
570 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
571 | ||
572 | goto err_free; | |
573 | } | |
574 | ||
575 | up(&device_add_lock); | |
576 | ||
577 | return p_dev; | |
578 | ||
579 | err_free: | |
580 | kfree(p_dev); | |
581 | s->device_count--; | |
582 | err_put: | |
583 | up(&device_add_lock); | |
584 | pcmcia_put_bus_socket(s); | |
585 | ||
586 | return NULL; | |
587 | } | |
588 | ||
589 | ||
590 | static int pcmcia_card_add(struct pcmcia_socket *s) | |
591 | { | |
592 | cisinfo_t cisinfo; | |
593 | cistpl_longlink_mfc_t mfc; | |
594 | unsigned int no_funcs, i; | |
595 | int ret = 0; | |
596 | ||
597 | if (!(s->resource_setup_done)) | |
598 | return -EAGAIN; /* try again, but later... */ | |
599 | ||
600 | pcmcia_validate_mem(s); | |
601 | ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo); | |
602 | if (ret || !cisinfo.Chains) { | |
603 | ds_dbg(0, "invalid CIS or invalid resources\n"); | |
604 | return -ENODEV; | |
605 | } | |
606 | ||
607 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) | |
608 | no_funcs = mfc.nfn; | |
609 | else | |
610 | no_funcs = 1; | |
611 | ||
612 | /* this doesn't handle multifunction devices on one pcmcia function | |
613 | * yet. */ | |
614 | for (i=0; i < no_funcs; i++) | |
615 | pcmcia_device_add(s->pcmcia, i); | |
616 | ||
617 | return (ret); | |
618 | } | |
619 | ||
620 | ||
1ad275e3 DB |
621 | static void pcmcia_delayed_add_pseudo_device(void *data) |
622 | { | |
623 | struct pcmcia_bus_socket *s = data; | |
624 | pcmcia_device_add(s, 0); | |
625 | s->device_add_pending = 0; | |
626 | } | |
627 | ||
628 | static inline void pcmcia_add_pseudo_device(struct pcmcia_bus_socket *s) | |
629 | { | |
630 | if (!s->device_add_pending) { | |
631 | schedule_work(&s->device_add); | |
632 | s->device_add_pending = 1; | |
633 | } | |
634 | return; | |
635 | } | |
636 | ||
e2f0b534 | 637 | static int pcmcia_requery(struct device *dev, void * _data) |
ff1fa9ef | 638 | { |
e2f0b534 DB |
639 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
640 | if (!p_dev->dev.driver) | |
641 | pcmcia_device_query(p_dev); | |
642 | ||
643 | return 0; | |
644 | } | |
645 | ||
646 | static void pcmcia_bus_rescan(struct pcmcia_socket *skt) | |
647 | { | |
648 | int no_devices=0; | |
649 | unsigned long flags; | |
650 | ||
ff1fa9ef | 651 | /* must be called with skt_sem held */ |
e2f0b534 DB |
652 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); |
653 | if (list_empty(&skt->pcmcia->devices_list)) | |
654 | no_devices=1; | |
655 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
656 | ||
657 | /* if no devices were added for this socket yet because of | |
658 | * missing resource information or other trouble, we need to | |
659 | * do this now. */ | |
660 | if (no_devices) { | |
661 | int ret = pcmcia_card_add(skt); | |
662 | if (ret) | |
663 | return; | |
664 | } | |
665 | ||
666 | /* some device information might have changed because of a CIS | |
667 | * update or because we can finally read it correctly... so | |
668 | * determine it again, overwriting old values if necessary. */ | |
669 | bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery); | |
670 | ||
671 | /* we re-scan all devices, not just the ones connected to this | |
672 | * socket. This does not matter, though. */ | |
a5b55778 | 673 | bus_rescan_devices(&pcmcia_bus_type); |
ff1fa9ef | 674 | } |
1ad275e3 DB |
675 | |
676 | static inline int pcmcia_devmatch(struct pcmcia_device *dev, | |
677 | struct pcmcia_device_id *did) | |
678 | { | |
679 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { | |
680 | if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) | |
681 | return 0; | |
682 | } | |
683 | ||
684 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { | |
685 | if ((!dev->has_card_id) || (dev->card_id != did->card_id)) | |
686 | return 0; | |
687 | } | |
688 | ||
689 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { | |
690 | if (dev->func != did->function) | |
691 | return 0; | |
692 | } | |
693 | ||
694 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { | |
695 | if (!dev->prod_id[0]) | |
696 | return 0; | |
697 | if (strcmp(did->prod_id[0], dev->prod_id[0])) | |
698 | return 0; | |
699 | } | |
700 | ||
701 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { | |
702 | if (!dev->prod_id[1]) | |
703 | return 0; | |
704 | if (strcmp(did->prod_id[1], dev->prod_id[1])) | |
705 | return 0; | |
706 | } | |
707 | ||
708 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { | |
709 | if (!dev->prod_id[2]) | |
710 | return 0; | |
711 | if (strcmp(did->prod_id[2], dev->prod_id[2])) | |
712 | return 0; | |
713 | } | |
714 | ||
715 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { | |
716 | if (!dev->prod_id[3]) | |
717 | return 0; | |
718 | if (strcmp(did->prod_id[3], dev->prod_id[3])) | |
719 | return 0; | |
720 | } | |
721 | ||
722 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { | |
723 | /* handle pseudo multifunction devices: | |
724 | * there are at most two pseudo multifunction devices. | |
725 | * if we're matching against the first, schedule a | |
726 | * call which will then check whether there are two | |
727 | * pseudo devices, and if not, add the second one. | |
728 | */ | |
729 | if (dev->device_no == 0) | |
730 | pcmcia_add_pseudo_device(dev->socket->pcmcia); | |
731 | ||
732 | if (dev->device_no != did->device_no) | |
733 | return 0; | |
734 | } | |
735 | ||
736 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { | |
737 | if ((!dev->has_func_id) || (dev->func_id != did->func_id)) | |
738 | return 0; | |
739 | ||
740 | /* if this is a pseudo-multi-function device, | |
741 | * we need explicit matches */ | |
742 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) | |
743 | return 0; | |
744 | if (dev->device_no) | |
745 | return 0; | |
746 | ||
747 | /* also, FUNC_ID matching needs to be activated by userspace | |
748 | * after it has re-checked that there is no possible module | |
749 | * with a prod_id/manf_id/card_id match. | |
750 | */ | |
751 | if (!dev->allow_func_id_match) | |
752 | return 0; | |
753 | } | |
754 | ||
ea7b3882 | 755 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { |
daa9517d DB |
756 | if (!dev->socket->fake_cis) |
757 | pcmcia_load_firmware(dev, did->cisfile); | |
758 | ||
759 | if (!dev->socket->fake_cis) | |
ea7b3882 | 760 | return 0; |
ea7b3882 DB |
761 | } |
762 | ||
f602ff7e DB |
763 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { |
764 | int i; | |
765 | for (i=0; i<4; i++) | |
766 | if (dev->prod_id[i]) | |
767 | return 0; | |
768 | if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) | |
769 | return 0; | |
770 | } | |
771 | ||
1ad275e3 DB |
772 | dev->dev.driver_data = (void *) did; |
773 | ||
774 | return 1; | |
775 | } | |
776 | ||
777 | ||
1da177e4 LT |
778 | static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) { |
779 | struct pcmcia_device * p_dev = to_pcmcia_dev(dev); | |
780 | struct pcmcia_driver * p_drv = to_pcmcia_drv(drv); | |
1ad275e3 | 781 | struct pcmcia_device_id *did = p_drv->id_table; |
1da177e4 LT |
782 | |
783 | /* matching by cardmgr */ | |
784 | if (p_dev->cardmgr == p_drv) | |
785 | return 1; | |
786 | ||
1ad275e3 DB |
787 | while (did && did->match_flags) { |
788 | if (pcmcia_devmatch(p_dev, did)) | |
789 | return 1; | |
790 | did++; | |
791 | } | |
792 | ||
1da177e4 LT |
793 | return 0; |
794 | } | |
795 | ||
840c2ac5 DB |
796 | #ifdef CONFIG_HOTPLUG |
797 | ||
798 | static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp, | |
799 | char *buffer, int buffer_size) | |
800 | { | |
801 | struct pcmcia_device *p_dev; | |
802 | int i, length = 0; | |
803 | u32 hash[4] = { 0, 0, 0, 0}; | |
804 | ||
805 | if (!dev) | |
806 | return -ENODEV; | |
807 | ||
808 | p_dev = to_pcmcia_dev(dev); | |
809 | ||
810 | /* calculate hashes */ | |
811 | for (i=0; i<4; i++) { | |
812 | if (!p_dev->prod_id[i]) | |
813 | continue; | |
814 | hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); | |
815 | } | |
816 | ||
817 | i = 0; | |
818 | ||
819 | if (add_hotplug_env_var(envp, num_envp, &i, | |
820 | buffer, buffer_size, &length, | |
821 | "SOCKET_NO=%u", | |
822 | p_dev->socket->sock)) | |
823 | return -ENOMEM; | |
824 | ||
825 | if (add_hotplug_env_var(envp, num_envp, &i, | |
826 | buffer, buffer_size, &length, | |
827 | "DEVICE_NO=%02X", | |
828 | p_dev->device_no)) | |
829 | return -ENOMEM; | |
830 | ||
831 | if (add_hotplug_env_var(envp, num_envp, &i, | |
832 | buffer, buffer_size, &length, | |
833 | "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" | |
834 | "pa%08Xpb%08Xpc%08Xpd%08X", | |
835 | p_dev->has_manf_id ? p_dev->manf_id : 0, | |
836 | p_dev->has_card_id ? p_dev->card_id : 0, | |
837 | p_dev->has_func_id ? p_dev->func_id : 0, | |
838 | p_dev->func, | |
839 | p_dev->device_no, | |
840 | hash[0], | |
841 | hash[1], | |
842 | hash[2], | |
843 | hash[3])) | |
844 | return -ENOMEM; | |
845 | ||
846 | envp[i] = NULL; | |
847 | ||
848 | return 0; | |
849 | } | |
850 | ||
851 | #else | |
852 | ||
853 | static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp, | |
854 | char *buffer, int buffer_size) | |
855 | { | |
856 | return -ENODEV; | |
857 | } | |
858 | ||
859 | #endif | |
860 | ||
1da177e4 LT |
861 | /************************ per-device sysfs output ***************************/ |
862 | ||
863 | #define pcmcia_device_attr(field, test, format) \ | |
e404e274 | 864 | static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
865 | { \ |
866 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
867 | return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \ | |
868 | } | |
869 | ||
870 | #define pcmcia_device_stringattr(name, field) \ | |
e404e274 | 871 | static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
872 | { \ |
873 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
874 | return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \ | |
875 | } | |
876 | ||
877 | pcmcia_device_attr(func, socket, "0x%02x\n"); | |
878 | pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); | |
879 | pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); | |
880 | pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); | |
881 | pcmcia_device_stringattr(prod_id1, prod_id[0]); | |
882 | pcmcia_device_stringattr(prod_id2, prod_id[1]); | |
883 | pcmcia_device_stringattr(prod_id3, prod_id[2]); | |
884 | pcmcia_device_stringattr(prod_id4, prod_id[3]); | |
885 | ||
a5b55778 DB |
886 | |
887 | static ssize_t pcmcia_store_allow_func_id_match (struct device * dev, struct device_attribute *attr, | |
888 | const char * buf, size_t count) | |
889 | { | |
890 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
891 | if (!count) | |
892 | return -EINVAL; | |
893 | ||
894 | down(&p_dev->socket->skt_sem); | |
895 | p_dev->allow_func_id_match = 1; | |
896 | up(&p_dev->socket->skt_sem); | |
897 | ||
898 | bus_rescan_devices(&pcmcia_bus_type); | |
899 | ||
900 | return count; | |
901 | } | |
902 | ||
1da177e4 LT |
903 | static struct device_attribute pcmcia_dev_attrs[] = { |
904 | __ATTR(function, 0444, func_show, NULL), | |
905 | __ATTR_RO(func_id), | |
906 | __ATTR_RO(manf_id), | |
907 | __ATTR_RO(card_id), | |
908 | __ATTR_RO(prod_id1), | |
909 | __ATTR_RO(prod_id2), | |
910 | __ATTR_RO(prod_id3), | |
911 | __ATTR_RO(prod_id4), | |
a5b55778 | 912 | __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), |
1da177e4 LT |
913 | __ATTR_NULL, |
914 | }; | |
915 | ||
916 | ||
1da177e4 LT |
917 | /*====================================================================== |
918 | ||
919 | The card status event handler. | |
920 | ||
921 | ======================================================================*/ | |
922 | ||
923 | struct send_event_data { | |
924 | struct pcmcia_socket *skt; | |
925 | event_t event; | |
926 | int priority; | |
927 | }; | |
928 | ||
929 | static int send_event_callback(struct device *dev, void * _data) | |
930 | { | |
931 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
932 | struct send_event_data *data = _data; | |
933 | ||
934 | /* we get called for all sockets, but may only pass the event | |
935 | * for drivers _on the affected socket_ */ | |
936 | if (p_dev->socket != data->skt) | |
937 | return 0; | |
938 | ||
939 | if (p_dev->client.state & (CLIENT_UNBOUND|CLIENT_STALE)) | |
940 | return 0; | |
941 | ||
942 | if (p_dev->client.EventMask & data->event) | |
943 | return EVENT(&p_dev->client, data->event, data->priority); | |
944 | ||
945 | return 0; | |
946 | } | |
947 | ||
948 | static int send_event(struct pcmcia_socket *s, event_t event, int priority) | |
949 | { | |
950 | int ret = 0; | |
951 | struct send_event_data private; | |
952 | struct pcmcia_bus_socket *skt = pcmcia_get_bus_socket(s->pcmcia); | |
953 | ||
954 | if (!skt) | |
955 | return 0; | |
956 | ||
957 | private.skt = s; | |
958 | private.event = event; | |
959 | private.priority = priority; | |
960 | ||
961 | ret = bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback); | |
962 | ||
963 | pcmcia_put_bus_socket(skt); | |
964 | return ret; | |
965 | } /* send_event */ | |
966 | ||
967 | ||
968 | /* Normally, the event is passed to individual drivers after | |
969 | * informing userspace. Only for CS_EVENT_CARD_REMOVAL this | |
970 | * is inversed to maintain historic compatibility. | |
971 | */ | |
972 | ||
973 | static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) | |
974 | { | |
975 | struct pcmcia_bus_socket *s = skt->pcmcia; | |
976 | int ret = 0; | |
977 | ||
978 | ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n", | |
979 | event, priority, s); | |
980 | ||
981 | switch (event) { | |
982 | ||
983 | case CS_EVENT_CARD_REMOVAL: | |
984 | s->state &= ~DS_SOCKET_PRESENT; | |
985 | send_event(skt, event, priority); | |
986 | unbind_request(s); | |
987 | handle_event(s, event); | |
988 | break; | |
989 | ||
990 | case CS_EVENT_CARD_INSERTION: | |
991 | s->state |= DS_SOCKET_PRESENT; | |
992 | pcmcia_card_add(skt); | |
993 | handle_event(s, event); | |
994 | break; | |
995 | ||
996 | case CS_EVENT_EJECTION_REQUEST: | |
997 | ret = send_event(skt, event, priority); | |
998 | break; | |
999 | ||
1000 | default: | |
1001 | handle_event(s, event); | |
1002 | send_event(skt, event, priority); | |
1003 | break; | |
1004 | } | |
1005 | ||
1006 | return 0; | |
1007 | } /* ds_event */ | |
1008 | ||
1009 | ||
1da177e4 LT |
1010 | |
1011 | int pcmcia_register_client(client_handle_t *handle, client_reg_t *req) | |
1012 | { | |
1013 | client_t *client = NULL; | |
1014 | struct pcmcia_socket *s; | |
1015 | struct pcmcia_bus_socket *skt = NULL; | |
1016 | struct pcmcia_device *p_dev = NULL; | |
1017 | ||
1018 | /* Look for unbound client with matching dev_info */ | |
1019 | down_read(&pcmcia_socket_list_rwsem); | |
1020 | list_for_each_entry(s, &pcmcia_socket_list, socket_list) { | |
1021 | unsigned long flags; | |
1022 | ||
1023 | if (s->state & SOCKET_CARDBUS) | |
1024 | continue; | |
1025 | ||
1026 | skt = s->pcmcia; | |
1027 | if (!skt) | |
1028 | continue; | |
1029 | skt = pcmcia_get_bus_socket(skt); | |
1030 | if (!skt) | |
1031 | continue; | |
1032 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
1033 | list_for_each_entry(p_dev, &skt->devices_list, socket_device_list) { | |
1034 | struct pcmcia_driver *p_drv; | |
1035 | p_dev = pcmcia_get_dev(p_dev); | |
1036 | if (!p_dev) | |
1037 | continue; | |
1038 | if (!(p_dev->client.state & CLIENT_UNBOUND) || | |
1039 | (!p_dev->dev.driver)) { | |
1040 | pcmcia_put_dev(p_dev); | |
1041 | continue; | |
1042 | } | |
1043 | p_drv = to_pcmcia_drv(p_dev->dev.driver); | |
1044 | if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) { | |
1045 | client = &p_dev->client; | |
1046 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1047 | goto found; | |
1048 | } | |
1049 | pcmcia_put_dev(p_dev); | |
1050 | } | |
1051 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1052 | pcmcia_put_bus_socket(skt); | |
1053 | } | |
1054 | found: | |
1055 | up_read(&pcmcia_socket_list_rwsem); | |
1056 | if (!p_dev || !client) | |
1057 | return -ENODEV; | |
1058 | ||
1059 | pcmcia_put_bus_socket(skt); /* safe, as we already hold a reference from bind_device */ | |
1060 | ||
1061 | *handle = client; | |
1062 | client->state &= ~CLIENT_UNBOUND; | |
1063 | client->Socket = s; | |
1064 | client->EventMask = req->EventMask; | |
1065 | client->event_handler = req->event_handler; | |
1066 | client->event_callback_args = req->event_callback_args; | |
1067 | client->event_callback_args.client_handle = client; | |
1068 | ||
1069 | if (s->state & SOCKET_CARDBUS) | |
1070 | client->state |= CLIENT_CARDBUS; | |
1071 | ||
1072 | if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0) && | |
1073 | (client->Function != BIND_FN_ALL)) { | |
1074 | cistpl_longlink_mfc_t mfc; | |
1075 | if (pccard_read_tuple(s, client->Function, CISTPL_LONGLINK_MFC, &mfc) | |
1076 | == CS_SUCCESS) | |
1077 | s->functions = mfc.nfn; | |
1078 | else | |
1079 | s->functions = 1; | |
1080 | s->config = kmalloc(sizeof(config_t) * s->functions, | |
1081 | GFP_KERNEL); | |
1082 | if (!s->config) | |
1083 | goto out_no_resource; | |
1084 | memset(s->config, 0, sizeof(config_t) * s->functions); | |
1085 | } | |
1086 | ||
1087 | ds_dbg(1, "register_client(): client 0x%p, dev %s\n", | |
1088 | client, p_dev->dev.bus_id); | |
1089 | if (client->EventMask & CS_EVENT_REGISTRATION_COMPLETE) | |
1090 | EVENT(client, CS_EVENT_REGISTRATION_COMPLETE, CS_EVENT_PRI_LOW); | |
1091 | ||
1092 | if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) { | |
1093 | if (client->EventMask & CS_EVENT_CARD_INSERTION) | |
1094 | EVENT(client, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); | |
1095 | } | |
1096 | ||
1097 | return CS_SUCCESS; | |
1098 | ||
1099 | out_no_resource: | |
1100 | pcmcia_put_dev(p_dev); | |
1101 | return CS_OUT_OF_RESOURCE; | |
1102 | } /* register_client */ | |
1103 | EXPORT_SYMBOL(pcmcia_register_client); | |
1104 | ||
1105 | ||
1da177e4 LT |
1106 | /* unbind _all_ devices attached to a given pcmcia_bus_socket. The |
1107 | * drivers have been called with EVENT_CARD_REMOVAL before. | |
1108 | */ | |
1109 | static int unbind_request(struct pcmcia_bus_socket *s) | |
1110 | { | |
1111 | struct pcmcia_device *p_dev; | |
1112 | unsigned long flags; | |
1113 | ||
1114 | ds_dbg(2, "unbind_request(%d)\n", s->parent->sock); | |
1115 | ||
1116 | s->device_count = 0; | |
1117 | ||
1118 | for (;;) { | |
1119 | /* unregister all pcmcia_devices registered with this socket*/ | |
1120 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
1121 | if (list_empty(&s->devices_list)) { | |
1122 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1123 | return 0; | |
1124 | } | |
1125 | p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list); | |
1126 | list_del(&p_dev->socket_device_list); | |
1127 | p_dev->client.state |= CLIENT_STALE; | |
1128 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1129 | ||
1130 | device_unregister(&p_dev->dev); | |
1131 | } | |
1132 | ||
1133 | return 0; | |
1134 | } /* unbind_request */ | |
1135 | ||
1136 | int pcmcia_deregister_client(client_handle_t handle) | |
1137 | { | |
1138 | struct pcmcia_socket *s; | |
1139 | int i; | |
1140 | struct pcmcia_device *p_dev = handle_to_pdev(handle); | |
1141 | ||
1142 | if (CHECK_HANDLE(handle)) | |
1143 | return CS_BAD_HANDLE; | |
1144 | ||
1145 | s = SOCKET(handle); | |
1146 | ds_dbg(1, "deregister_client(%p)\n", handle); | |
1147 | ||
1148 | if (handle->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED)) | |
1149 | goto warn_out; | |
1150 | for (i = 0; i < MAX_WIN; i++) | |
1151 | if (handle->state & CLIENT_WIN_REQ(i)) | |
1152 | goto warn_out; | |
1153 | ||
1154 | if (handle->state & CLIENT_STALE) { | |
1155 | handle->client_magic = 0; | |
1156 | handle->state &= ~CLIENT_STALE; | |
1157 | pcmcia_put_dev(p_dev); | |
1158 | } else { | |
1159 | handle->state = CLIENT_UNBOUND; | |
1160 | handle->event_handler = NULL; | |
1161 | } | |
1162 | ||
1163 | return CS_SUCCESS; | |
1164 | warn_out: | |
1165 | printk(KERN_WARNING "ds: deregister_client was called too early.\n"); | |
1166 | return CS_IN_USE; | |
1167 | } /* deregister_client */ | |
1168 | EXPORT_SYMBOL(pcmcia_deregister_client); | |
1169 | ||
90c6cdd1 DB |
1170 | static struct pcmcia_callback pcmcia_bus_callback = { |
1171 | .owner = THIS_MODULE, | |
1172 | .event = ds_event, | |
1173 | .requery = pcmcia_bus_rescan, | |
1174 | }; | |
1175 | ||
1da177e4 LT |
1176 | static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev) |
1177 | { | |
1178 | struct pcmcia_socket *socket = class_get_devdata(class_dev); | |
1179 | struct pcmcia_bus_socket *s; | |
1180 | int ret; | |
1181 | ||
1182 | s = kmalloc(sizeof(struct pcmcia_bus_socket), GFP_KERNEL); | |
1183 | if(!s) | |
1184 | return -ENOMEM; | |
1185 | memset(s, 0, sizeof(struct pcmcia_bus_socket)); | |
1186 | ||
1187 | /* get reference to parent socket */ | |
1188 | s->parent = pcmcia_get_socket(socket); | |
1189 | if (!s->parent) { | |
1190 | printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket); | |
1191 | kfree (s); | |
1192 | return -ENODEV; | |
1193 | } | |
1194 | ||
1195 | kref_init(&s->refcount); | |
1196 | ||
1197 | /* | |
1198 | * Ugly. But we want to wait for the socket threads to have started up. | |
1199 | * We really should let the drivers themselves drive some of this.. | |
1200 | */ | |
1201 | msleep(250); | |
1202 | ||
e7a480d2 | 1203 | #ifdef CONFIG_PCMCIA_IOCTL |
1da177e4 | 1204 | init_waitqueue_head(&s->queue); |
e7a480d2 | 1205 | #endif |
1da177e4 | 1206 | INIT_LIST_HEAD(&s->devices_list); |
1ad275e3 | 1207 | INIT_WORK(&s->device_add, pcmcia_delayed_add_pseudo_device, s); |
1da177e4 LT |
1208 | |
1209 | /* Set up hotline to Card Services */ | |
1da177e4 LT |
1210 | socket->pcmcia = s; |
1211 | ||
90c6cdd1 | 1212 | ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); |
1da177e4 LT |
1213 | if (ret) { |
1214 | printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket); | |
1215 | pcmcia_put_bus_socket(s); | |
1216 | socket->pcmcia = NULL; | |
1217 | return (ret); | |
1218 | } | |
1219 | ||
1220 | return 0; | |
1221 | } | |
1222 | ||
1da177e4 LT |
1223 | static void pcmcia_bus_remove_socket(struct class_device *class_dev) |
1224 | { | |
1225 | struct pcmcia_socket *socket = class_get_devdata(class_dev); | |
1226 | ||
1227 | if (!socket || !socket->pcmcia) | |
1228 | return; | |
1229 | ||
1230 | pccard_register_pcmcia(socket, NULL); | |
1231 | ||
1232 | socket->pcmcia->state |= DS_SOCKET_DEAD; | |
1233 | pcmcia_put_bus_socket(socket->pcmcia); | |
1234 | socket->pcmcia = NULL; | |
1235 | ||
1236 | return; | |
1237 | } | |
1238 | ||
1239 | ||
1240 | /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ | |
1241 | static struct class_interface pcmcia_bus_interface = { | |
1242 | .class = &pcmcia_socket_class, | |
1243 | .add = &pcmcia_bus_add_socket, | |
1244 | .remove = &pcmcia_bus_remove_socket, | |
1245 | }; | |
1246 | ||
1247 | ||
e7a480d2 | 1248 | struct bus_type pcmcia_bus_type = { |
1da177e4 | 1249 | .name = "pcmcia", |
840c2ac5 | 1250 | .hotplug = pcmcia_bus_hotplug, |
1da177e4 LT |
1251 | .match = pcmcia_bus_match, |
1252 | .dev_attrs = pcmcia_dev_attrs, | |
1253 | }; | |
1da177e4 LT |
1254 | |
1255 | ||
1256 | static int __init init_pcmcia_bus(void) | |
1257 | { | |
1da177e4 LT |
1258 | spin_lock_init(&pcmcia_dev_list_lock); |
1259 | ||
1260 | bus_register(&pcmcia_bus_type); | |
1261 | class_interface_register(&pcmcia_bus_interface); | |
1262 | ||
e7a480d2 | 1263 | pcmcia_setup_ioctl(); |
1da177e4 LT |
1264 | |
1265 | return 0; | |
1266 | } | |
1267 | fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that | |
1268 | * pcmcia_socket_class is already registered */ | |
1269 | ||
1270 | ||
1271 | static void __exit exit_pcmcia_bus(void) | |
1272 | { | |
e7a480d2 | 1273 | pcmcia_cleanup_ioctl(); |
1da177e4 | 1274 | |
e7a480d2 | 1275 | class_interface_unregister(&pcmcia_bus_interface); |
1da177e4 LT |
1276 | |
1277 | bus_unregister(&pcmcia_bus_type); | |
1278 | } | |
1279 | module_exit(exit_pcmcia_bus); | |
1280 | ||
1281 | ||
1da177e4 | 1282 | MODULE_ALIAS("ds"); |