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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> |
1da177e4 LT |
39 | |
40 | #include <asm/atomic.h> | |
41 | ||
42 | #define IN_CARD_SERVICES | |
43 | #include <pcmcia/version.h> | |
44 | #include <pcmcia/cs_types.h> | |
45 | #include <pcmcia/cs.h> | |
46 | #include <pcmcia/bulkmem.h> | |
47 | #include <pcmcia/cistpl.h> | |
48 | #include <pcmcia/ds.h> | |
49 | #include <pcmcia/ss.h> | |
50 | ||
51 | #include "cs_internal.h" | |
52 | ||
53 | /*====================================================================*/ | |
54 | ||
55 | /* Module parameters */ | |
56 | ||
57 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
58 | MODULE_DESCRIPTION("PCMCIA Driver Services"); | |
59 | MODULE_LICENSE("GPL"); | |
60 | ||
61 | #ifdef DEBUG | |
62 | int ds_pc_debug; | |
63 | ||
64 | module_param_named(pc_debug, ds_pc_debug, int, 0644); | |
65 | ||
66 | #define ds_dbg(lvl, fmt, arg...) do { \ | |
67 | if (ds_pc_debug > (lvl)) \ | |
68 | printk(KERN_DEBUG "ds: " fmt , ## arg); \ | |
69 | } while (0) | |
70 | #else | |
71 | #define ds_dbg(lvl, fmt, arg...) do { } while (0) | |
72 | #endif | |
73 | ||
74 | /*====================================================================*/ | |
75 | ||
76 | /* Device user information */ | |
77 | #define MAX_EVENTS 32 | |
78 | #define USER_MAGIC 0x7ea4 | |
79 | #define CHECK_USER(u) \ | |
80 | (((u) == NULL) || ((u)->user_magic != USER_MAGIC)) | |
81 | typedef struct user_info_t { | |
82 | u_int user_magic; | |
83 | int event_head, event_tail; | |
84 | event_t event[MAX_EVENTS]; | |
85 | struct user_info_t *next; | |
86 | struct pcmcia_bus_socket *socket; | |
87 | } user_info_t; | |
88 | ||
89 | /* Socket state information */ | |
90 | struct pcmcia_bus_socket { | |
91 | struct kref refcount; | |
92 | struct pcmcia_callback callback; | |
93 | int state; | |
94 | user_info_t *user; | |
95 | wait_queue_head_t queue; | |
96 | struct pcmcia_socket *parent; | |
97 | ||
98 | /* the PCMCIA devices connected to this socket (normally one, more | |
99 | * for multifunction devices: */ | |
100 | struct list_head devices_list; | |
101 | u8 device_count; /* the number of devices, used | |
102 | * only internally and subject | |
103 | * to incorrectness and change */ | |
1ad275e3 DB |
104 | |
105 | u8 device_add_pending; | |
106 | struct work_struct device_add; | |
1da177e4 LT |
107 | }; |
108 | static spinlock_t pcmcia_dev_list_lock; | |
109 | ||
110 | #define DS_SOCKET_PRESENT 0x01 | |
111 | #define DS_SOCKET_BUSY 0x02 | |
112 | #define DS_SOCKET_REMOVAL_PENDING 0x10 | |
113 | #define DS_SOCKET_DEAD 0x80 | |
114 | ||
115 | /*====================================================================*/ | |
116 | ||
117 | static int major_dev = -1; | |
118 | ||
119 | static int unbind_request(struct pcmcia_bus_socket *s); | |
120 | ||
121 | /*====================================================================*/ | |
122 | ||
123 | /* code which was in cs.c before */ | |
124 | ||
125 | /* String tables for error messages */ | |
126 | ||
127 | typedef struct lookup_t { | |
128 | int key; | |
129 | char *msg; | |
130 | } lookup_t; | |
131 | ||
132 | static const lookup_t error_table[] = { | |
133 | { CS_SUCCESS, "Operation succeeded" }, | |
134 | { CS_BAD_ADAPTER, "Bad adapter" }, | |
135 | { CS_BAD_ATTRIBUTE, "Bad attribute", }, | |
136 | { CS_BAD_BASE, "Bad base address" }, | |
137 | { CS_BAD_EDC, "Bad EDC" }, | |
138 | { CS_BAD_IRQ, "Bad IRQ" }, | |
139 | { CS_BAD_OFFSET, "Bad offset" }, | |
140 | { CS_BAD_PAGE, "Bad page number" }, | |
141 | { CS_READ_FAILURE, "Read failure" }, | |
142 | { CS_BAD_SIZE, "Bad size" }, | |
143 | { CS_BAD_SOCKET, "Bad socket" }, | |
144 | { CS_BAD_TYPE, "Bad type" }, | |
145 | { CS_BAD_VCC, "Bad Vcc" }, | |
146 | { CS_BAD_VPP, "Bad Vpp" }, | |
147 | { CS_BAD_WINDOW, "Bad window" }, | |
148 | { CS_WRITE_FAILURE, "Write failure" }, | |
149 | { CS_NO_CARD, "No card present" }, | |
150 | { CS_UNSUPPORTED_FUNCTION, "Usupported function" }, | |
151 | { CS_UNSUPPORTED_MODE, "Unsupported mode" }, | |
152 | { CS_BAD_SPEED, "Bad speed" }, | |
153 | { CS_BUSY, "Resource busy" }, | |
154 | { CS_GENERAL_FAILURE, "General failure" }, | |
155 | { CS_WRITE_PROTECTED, "Write protected" }, | |
156 | { CS_BAD_ARG_LENGTH, "Bad argument length" }, | |
157 | { CS_BAD_ARGS, "Bad arguments" }, | |
158 | { CS_CONFIGURATION_LOCKED, "Configuration locked" }, | |
159 | { CS_IN_USE, "Resource in use" }, | |
160 | { CS_NO_MORE_ITEMS, "No more items" }, | |
161 | { CS_OUT_OF_RESOURCE, "Out of resource" }, | |
162 | { CS_BAD_HANDLE, "Bad handle" }, | |
163 | { CS_BAD_TUPLE, "Bad CIS tuple" } | |
164 | }; | |
165 | ||
166 | ||
167 | static const lookup_t service_table[] = { | |
168 | { AccessConfigurationRegister, "AccessConfigurationRegister" }, | |
169 | { AddSocketServices, "AddSocketServices" }, | |
170 | { AdjustResourceInfo, "AdjustResourceInfo" }, | |
171 | { CheckEraseQueue, "CheckEraseQueue" }, | |
172 | { CloseMemory, "CloseMemory" }, | |
173 | { DeregisterClient, "DeregisterClient" }, | |
174 | { DeregisterEraseQueue, "DeregisterEraseQueue" }, | |
175 | { GetCardServicesInfo, "GetCardServicesInfo" }, | |
176 | { GetClientInfo, "GetClientInfo" }, | |
177 | { GetConfigurationInfo, "GetConfigurationInfo" }, | |
178 | { GetEventMask, "GetEventMask" }, | |
179 | { GetFirstClient, "GetFirstClient" }, | |
180 | { GetFirstRegion, "GetFirstRegion" }, | |
181 | { GetFirstTuple, "GetFirstTuple" }, | |
182 | { GetNextClient, "GetNextClient" }, | |
183 | { GetNextRegion, "GetNextRegion" }, | |
184 | { GetNextTuple, "GetNextTuple" }, | |
185 | { GetStatus, "GetStatus" }, | |
186 | { GetTupleData, "GetTupleData" }, | |
187 | { MapMemPage, "MapMemPage" }, | |
188 | { ModifyConfiguration, "ModifyConfiguration" }, | |
189 | { ModifyWindow, "ModifyWindow" }, | |
190 | { OpenMemory, "OpenMemory" }, | |
191 | { ParseTuple, "ParseTuple" }, | |
192 | { ReadMemory, "ReadMemory" }, | |
193 | { RegisterClient, "RegisterClient" }, | |
194 | { RegisterEraseQueue, "RegisterEraseQueue" }, | |
195 | { RegisterMTD, "RegisterMTD" }, | |
196 | { ReleaseConfiguration, "ReleaseConfiguration" }, | |
197 | { ReleaseIO, "ReleaseIO" }, | |
198 | { ReleaseIRQ, "ReleaseIRQ" }, | |
199 | { ReleaseWindow, "ReleaseWindow" }, | |
200 | { RequestConfiguration, "RequestConfiguration" }, | |
201 | { RequestIO, "RequestIO" }, | |
202 | { RequestIRQ, "RequestIRQ" }, | |
203 | { RequestSocketMask, "RequestSocketMask" }, | |
204 | { RequestWindow, "RequestWindow" }, | |
205 | { ResetCard, "ResetCard" }, | |
206 | { SetEventMask, "SetEventMask" }, | |
207 | { ValidateCIS, "ValidateCIS" }, | |
208 | { WriteMemory, "WriteMemory" }, | |
209 | { BindDevice, "BindDevice" }, | |
210 | { BindMTD, "BindMTD" }, | |
211 | { ReportError, "ReportError" }, | |
212 | { SuspendCard, "SuspendCard" }, | |
213 | { ResumeCard, "ResumeCard" }, | |
214 | { EjectCard, "EjectCard" }, | |
215 | { InsertCard, "InsertCard" }, | |
216 | { ReplaceCIS, "ReplaceCIS" } | |
217 | }; | |
218 | ||
219 | ||
220 | int pcmcia_report_error(client_handle_t handle, error_info_t *err) | |
221 | { | |
222 | int i; | |
223 | char *serv; | |
224 | ||
225 | if (CHECK_HANDLE(handle)) | |
226 | printk(KERN_NOTICE); | |
227 | else { | |
228 | struct pcmcia_device *p_dev = handle_to_pdev(handle); | |
229 | printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id); | |
230 | } | |
231 | ||
232 | for (i = 0; i < ARRAY_SIZE(service_table); i++) | |
233 | if (service_table[i].key == err->func) | |
234 | break; | |
235 | if (i < ARRAY_SIZE(service_table)) | |
236 | serv = service_table[i].msg; | |
237 | else | |
238 | serv = "Unknown service number"; | |
239 | ||
240 | for (i = 0; i < ARRAY_SIZE(error_table); i++) | |
241 | if (error_table[i].key == err->retcode) | |
242 | break; | |
243 | if (i < ARRAY_SIZE(error_table)) | |
244 | printk("%s: %s\n", serv, error_table[i].msg); | |
245 | else | |
246 | printk("%s: Unknown error code %#x\n", serv, err->retcode); | |
247 | ||
248 | return CS_SUCCESS; | |
249 | } /* report_error */ | |
250 | EXPORT_SYMBOL(pcmcia_report_error); | |
251 | ||
252 | /* end of code which was in cs.c before */ | |
253 | ||
254 | /*======================================================================*/ | |
255 | ||
256 | void cs_error(client_handle_t handle, int func, int ret) | |
257 | { | |
258 | error_info_t err = { func, ret }; | |
259 | pcmcia_report_error(handle, &err); | |
260 | } | |
261 | EXPORT_SYMBOL(cs_error); | |
262 | ||
23a83bfe DB |
263 | #ifdef CONFIG_PCMCIA_DEBUG |
264 | ||
265 | ||
266 | static void pcmcia_check_driver(struct pcmcia_driver *p_drv) | |
267 | { | |
268 | struct pcmcia_device_id *did = p_drv->id_table; | |
269 | unsigned int i; | |
270 | u32 hash; | |
271 | ||
272 | while (did && did->match_flags) { | |
273 | for (i=0; i<4; i++) { | |
274 | if (!did->prod_id[i]) | |
275 | continue; | |
276 | ||
277 | hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i])); | |
278 | if (hash == did->prod_id_hash[i]) | |
279 | continue; | |
280 | ||
281 | printk(KERN_DEBUG "pcmcia: %s: invalid hash for " | |
282 | "product string \"%s\": is 0x%x, should " | |
283 | "be 0x%x\n", p_drv->drv.name, did->prod_id[i], | |
284 | did->prod_id_hash[i], hash); | |
285 | } | |
286 | did++; | |
287 | } | |
288 | ||
289 | return; | |
290 | } | |
291 | ||
292 | #else | |
293 | static inline void pcmcia_check_driver(struct pcmcia_driver *p_drv) { | |
294 | return; | |
295 | } | |
296 | #endif | |
297 | ||
1da177e4 LT |
298 | /*======================================================================*/ |
299 | ||
300 | static struct pcmcia_driver * get_pcmcia_driver (dev_info_t *dev_info); | |
301 | static struct pcmcia_bus_socket * get_socket_info_by_nr(unsigned int nr); | |
302 | ||
303 | static void pcmcia_release_bus_socket(struct kref *refcount) | |
304 | { | |
305 | struct pcmcia_bus_socket *s = container_of(refcount, struct pcmcia_bus_socket, refcount); | |
306 | pcmcia_put_socket(s->parent); | |
307 | kfree(s); | |
308 | } | |
309 | ||
310 | static void pcmcia_put_bus_socket(struct pcmcia_bus_socket *s) | |
311 | { | |
312 | kref_put(&s->refcount, pcmcia_release_bus_socket); | |
313 | } | |
314 | ||
315 | static struct pcmcia_bus_socket *pcmcia_get_bus_socket(struct pcmcia_bus_socket *s) | |
316 | { | |
317 | kref_get(&s->refcount); | |
318 | return (s); | |
319 | } | |
320 | ||
321 | /** | |
322 | * pcmcia_register_driver - register a PCMCIA driver with the bus core | |
323 | * | |
324 | * Registers a PCMCIA driver with the PCMCIA bus core. | |
325 | */ | |
326 | static int pcmcia_device_probe(struct device *dev); | |
327 | static int pcmcia_device_remove(struct device * dev); | |
328 | ||
329 | int pcmcia_register_driver(struct pcmcia_driver *driver) | |
330 | { | |
331 | if (!driver) | |
332 | return -EINVAL; | |
333 | ||
23a83bfe DB |
334 | pcmcia_check_driver(driver); |
335 | ||
1da177e4 LT |
336 | /* initialize common fields */ |
337 | driver->drv.bus = &pcmcia_bus_type; | |
338 | driver->drv.owner = driver->owner; | |
339 | driver->drv.probe = pcmcia_device_probe; | |
340 | driver->drv.remove = pcmcia_device_remove; | |
341 | ||
342 | return driver_register(&driver->drv); | |
343 | } | |
344 | EXPORT_SYMBOL(pcmcia_register_driver); | |
345 | ||
346 | /** | |
347 | * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core | |
348 | */ | |
349 | void pcmcia_unregister_driver(struct pcmcia_driver *driver) | |
350 | { | |
351 | driver_unregister(&driver->drv); | |
352 | } | |
353 | EXPORT_SYMBOL(pcmcia_unregister_driver); | |
354 | ||
355 | #ifdef CONFIG_PROC_FS | |
356 | static struct proc_dir_entry *proc_pccard = NULL; | |
357 | ||
358 | static int proc_read_drivers_callback(struct device_driver *driver, void *d) | |
359 | { | |
360 | char **p = d; | |
361 | struct pcmcia_driver *p_drv = container_of(driver, | |
362 | struct pcmcia_driver, drv); | |
363 | ||
364 | *p += sprintf(*p, "%-24.24s 1 %d\n", p_drv->drv.name, | |
365 | #ifdef CONFIG_MODULE_UNLOAD | |
366 | (p_drv->owner) ? module_refcount(p_drv->owner) : 1 | |
367 | #else | |
368 | 1 | |
369 | #endif | |
370 | ); | |
371 | d = (void *) p; | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int proc_read_drivers(char *buf, char **start, off_t pos, | |
377 | int count, int *eof, void *data) | |
378 | { | |
379 | char *p = buf; | |
380 | ||
381 | bus_for_each_drv(&pcmcia_bus_type, NULL, | |
382 | (void *) &p, proc_read_drivers_callback); | |
383 | ||
384 | return (p - buf); | |
385 | } | |
386 | #endif | |
387 | ||
388 | /* pcmcia_device handling */ | |
389 | ||
390 | static struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev) | |
391 | { | |
392 | struct device *tmp_dev; | |
393 | tmp_dev = get_device(&p_dev->dev); | |
394 | if (!tmp_dev) | |
395 | return NULL; | |
396 | return to_pcmcia_dev(tmp_dev); | |
397 | } | |
398 | ||
399 | static void pcmcia_put_dev(struct pcmcia_device *p_dev) | |
400 | { | |
401 | if (p_dev) | |
402 | put_device(&p_dev->dev); | |
403 | } | |
404 | ||
405 | static void pcmcia_release_dev(struct device *dev) | |
406 | { | |
407 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
408 | ds_dbg(1, "releasing dev %p\n", p_dev); | |
409 | pcmcia_put_bus_socket(p_dev->socket->pcmcia); | |
410 | kfree(p_dev); | |
411 | } | |
412 | ||
413 | ||
414 | static int pcmcia_device_probe(struct device * dev) | |
415 | { | |
416 | struct pcmcia_device *p_dev; | |
417 | struct pcmcia_driver *p_drv; | |
418 | int ret = 0; | |
419 | ||
420 | dev = get_device(dev); | |
421 | if (!dev) | |
422 | return -ENODEV; | |
423 | ||
424 | p_dev = to_pcmcia_dev(dev); | |
425 | p_drv = to_pcmcia_drv(dev->driver); | |
426 | ||
427 | if (!try_module_get(p_drv->owner)) { | |
428 | ret = -EINVAL; | |
429 | goto put_dev; | |
430 | } | |
431 | ||
432 | if (p_drv->attach) { | |
433 | p_dev->instance = p_drv->attach(); | |
434 | if ((!p_dev->instance) || (p_dev->client.state & CLIENT_UNBOUND)) { | |
435 | printk(KERN_NOTICE "ds: unable to create instance " | |
436 | "of '%s'!\n", p_drv->drv.name); | |
437 | ret = -EINVAL; | |
438 | } | |
439 | } | |
440 | ||
441 | if (ret) | |
442 | module_put(p_drv->owner); | |
443 | put_dev: | |
444 | if ((ret) || !(p_drv->attach)) | |
445 | put_device(dev); | |
446 | return (ret); | |
447 | } | |
448 | ||
449 | ||
450 | static int pcmcia_device_remove(struct device * dev) | |
451 | { | |
452 | struct pcmcia_device *p_dev; | |
453 | struct pcmcia_driver *p_drv; | |
454 | ||
455 | /* detach the "instance" */ | |
456 | p_dev = to_pcmcia_dev(dev); | |
457 | p_drv = to_pcmcia_drv(dev->driver); | |
458 | ||
459 | if (p_drv) { | |
460 | if ((p_drv->detach) && (p_dev->instance)) { | |
461 | p_drv->detach(p_dev->instance); | |
462 | /* from pcmcia_probe_device */ | |
463 | put_device(&p_dev->dev); | |
464 | } | |
465 | module_put(p_drv->owner); | |
466 | } | |
467 | ||
468 | return 0; | |
469 | } | |
470 | ||
471 | ||
472 | ||
473 | /* | |
474 | * pcmcia_device_query -- determine information about a pcmcia device | |
475 | */ | |
476 | static int pcmcia_device_query(struct pcmcia_device *p_dev) | |
477 | { | |
478 | cistpl_manfid_t manf_id; | |
479 | cistpl_funcid_t func_id; | |
480 | cistpl_vers_1_t vers1; | |
481 | unsigned int i; | |
482 | ||
483 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
484 | CISTPL_MANFID, &manf_id)) { | |
485 | p_dev->manf_id = manf_id.manf; | |
486 | p_dev->card_id = manf_id.card; | |
487 | p_dev->has_manf_id = 1; | |
488 | p_dev->has_card_id = 1; | |
489 | } | |
490 | ||
491 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
492 | CISTPL_FUNCID, &func_id)) { | |
493 | p_dev->func_id = func_id.func; | |
494 | p_dev->has_func_id = 1; | |
495 | } else { | |
496 | /* rule of thumb: cards with no FUNCID, but with | |
497 | * common memory device geometry information, are | |
498 | * probably memory cards (from pcmcia-cs) */ | |
499 | cistpl_device_geo_t devgeo; | |
500 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
501 | CISTPL_DEVICE_GEO, &devgeo)) { | |
502 | ds_dbg(0, "mem device geometry probably means " | |
503 | "FUNCID_MEMORY\n"); | |
504 | p_dev->func_id = CISTPL_FUNCID_MEMORY; | |
505 | p_dev->has_func_id = 1; | |
506 | } | |
507 | } | |
508 | ||
509 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1, | |
510 | &vers1)) { | |
511 | for (i=0; i < vers1.ns; i++) { | |
512 | char *tmp; | |
513 | unsigned int length; | |
514 | ||
515 | tmp = vers1.str + vers1.ofs[i]; | |
516 | ||
517 | length = strlen(tmp) + 1; | |
518 | if ((length < 3) || (length > 255)) | |
519 | continue; | |
520 | ||
521 | p_dev->prod_id[i] = kmalloc(sizeof(char) * length, | |
522 | GFP_KERNEL); | |
523 | if (!p_dev->prod_id[i]) | |
524 | continue; | |
525 | ||
526 | p_dev->prod_id[i] = strncpy(p_dev->prod_id[i], | |
527 | tmp, length); | |
528 | } | |
529 | } | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
534 | ||
535 | /* device_add_lock is needed to avoid double registration by cardmgr and kernel. | |
536 | * Serializes pcmcia_device_add; will most likely be removed in future. | |
537 | * | |
538 | * While it has the caveat that adding new PCMCIA devices inside(!) device_register() | |
539 | * won't work, this doesn't matter much at the moment: the driver core doesn't | |
540 | * support it either. | |
541 | */ | |
542 | static DECLARE_MUTEX(device_add_lock); | |
543 | ||
544 | static struct pcmcia_device * pcmcia_device_add(struct pcmcia_bus_socket *s, unsigned int function) | |
545 | { | |
546 | struct pcmcia_device *p_dev; | |
547 | unsigned long flags; | |
548 | ||
549 | s = pcmcia_get_bus_socket(s); | |
550 | if (!s) | |
551 | return NULL; | |
552 | ||
553 | down(&device_add_lock); | |
554 | ||
1ad275e3 DB |
555 | /* max of 2 devices per card */ |
556 | if (s->device_count == 2) | |
557 | goto err_put; | |
558 | ||
1da177e4 LT |
559 | p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL); |
560 | if (!p_dev) | |
561 | goto err_put; | |
562 | memset(p_dev, 0, sizeof(struct pcmcia_device)); | |
563 | ||
564 | p_dev->socket = s->parent; | |
565 | p_dev->device_no = (s->device_count++); | |
566 | p_dev->func = function; | |
567 | ||
568 | p_dev->dev.bus = &pcmcia_bus_type; | |
569 | p_dev->dev.parent = s->parent->dev.dev; | |
570 | p_dev->dev.release = pcmcia_release_dev; | |
571 | sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no); | |
572 | ||
573 | /* compat */ | |
574 | p_dev->client.client_magic = CLIENT_MAGIC; | |
575 | p_dev->client.Socket = s->parent; | |
576 | p_dev->client.Function = function; | |
577 | p_dev->client.state = CLIENT_UNBOUND; | |
578 | ||
579 | /* Add to the list in pcmcia_bus_socket */ | |
580 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
581 | list_add_tail(&p_dev->socket_device_list, &s->devices_list); | |
582 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
583 | ||
1ad275e3 DB |
584 | pcmcia_device_query(p_dev); |
585 | ||
1da177e4 LT |
586 | if (device_register(&p_dev->dev)) { |
587 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
588 | list_del(&p_dev->socket_device_list); | |
589 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
590 | ||
591 | goto err_free; | |
592 | } | |
593 | ||
594 | up(&device_add_lock); | |
595 | ||
596 | return p_dev; | |
597 | ||
598 | err_free: | |
599 | kfree(p_dev); | |
600 | s->device_count--; | |
601 | err_put: | |
602 | up(&device_add_lock); | |
603 | pcmcia_put_bus_socket(s); | |
604 | ||
605 | return NULL; | |
606 | } | |
607 | ||
608 | ||
609 | static int pcmcia_card_add(struct pcmcia_socket *s) | |
610 | { | |
611 | cisinfo_t cisinfo; | |
612 | cistpl_longlink_mfc_t mfc; | |
613 | unsigned int no_funcs, i; | |
614 | int ret = 0; | |
615 | ||
616 | if (!(s->resource_setup_done)) | |
617 | return -EAGAIN; /* try again, but later... */ | |
618 | ||
619 | pcmcia_validate_mem(s); | |
620 | ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo); | |
621 | if (ret || !cisinfo.Chains) { | |
622 | ds_dbg(0, "invalid CIS or invalid resources\n"); | |
623 | return -ENODEV; | |
624 | } | |
625 | ||
626 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) | |
627 | no_funcs = mfc.nfn; | |
628 | else | |
629 | no_funcs = 1; | |
630 | ||
631 | /* this doesn't handle multifunction devices on one pcmcia function | |
632 | * yet. */ | |
633 | for (i=0; i < no_funcs; i++) | |
634 | pcmcia_device_add(s->pcmcia, i); | |
635 | ||
636 | return (ret); | |
637 | } | |
638 | ||
639 | ||
1ad275e3 DB |
640 | static void pcmcia_delayed_add_pseudo_device(void *data) |
641 | { | |
642 | struct pcmcia_bus_socket *s = data; | |
643 | pcmcia_device_add(s, 0); | |
644 | s->device_add_pending = 0; | |
645 | } | |
646 | ||
647 | static inline void pcmcia_add_pseudo_device(struct pcmcia_bus_socket *s) | |
648 | { | |
649 | if (!s->device_add_pending) { | |
650 | schedule_work(&s->device_add); | |
651 | s->device_add_pending = 1; | |
652 | } | |
653 | return; | |
654 | } | |
655 | ||
ff1fa9ef DB |
656 | static void pcmcia_bus_rescan(void) |
657 | { | |
658 | /* must be called with skt_sem held */ | |
659 | bus_rescan_devices(&pcmcia_bus_type); | |
660 | } | |
1ad275e3 DB |
661 | |
662 | static inline int pcmcia_devmatch(struct pcmcia_device *dev, | |
663 | struct pcmcia_device_id *did) | |
664 | { | |
665 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { | |
666 | if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) | |
667 | return 0; | |
668 | } | |
669 | ||
670 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { | |
671 | if ((!dev->has_card_id) || (dev->card_id != did->card_id)) | |
672 | return 0; | |
673 | } | |
674 | ||
675 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { | |
676 | if (dev->func != did->function) | |
677 | return 0; | |
678 | } | |
679 | ||
680 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { | |
681 | if (!dev->prod_id[0]) | |
682 | return 0; | |
683 | if (strcmp(did->prod_id[0], dev->prod_id[0])) | |
684 | return 0; | |
685 | } | |
686 | ||
687 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { | |
688 | if (!dev->prod_id[1]) | |
689 | return 0; | |
690 | if (strcmp(did->prod_id[1], dev->prod_id[1])) | |
691 | return 0; | |
692 | } | |
693 | ||
694 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { | |
695 | if (!dev->prod_id[2]) | |
696 | return 0; | |
697 | if (strcmp(did->prod_id[2], dev->prod_id[2])) | |
698 | return 0; | |
699 | } | |
700 | ||
701 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { | |
702 | if (!dev->prod_id[3]) | |
703 | return 0; | |
704 | if (strcmp(did->prod_id[3], dev->prod_id[3])) | |
705 | return 0; | |
706 | } | |
707 | ||
708 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { | |
709 | /* handle pseudo multifunction devices: | |
710 | * there are at most two pseudo multifunction devices. | |
711 | * if we're matching against the first, schedule a | |
712 | * call which will then check whether there are two | |
713 | * pseudo devices, and if not, add the second one. | |
714 | */ | |
715 | if (dev->device_no == 0) | |
716 | pcmcia_add_pseudo_device(dev->socket->pcmcia); | |
717 | ||
718 | if (dev->device_no != did->device_no) | |
719 | return 0; | |
720 | } | |
721 | ||
722 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { | |
723 | if ((!dev->has_func_id) || (dev->func_id != did->func_id)) | |
724 | return 0; | |
725 | ||
726 | /* if this is a pseudo-multi-function device, | |
727 | * we need explicit matches */ | |
728 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) | |
729 | return 0; | |
730 | if (dev->device_no) | |
731 | return 0; | |
732 | ||
733 | /* also, FUNC_ID matching needs to be activated by userspace | |
734 | * after it has re-checked that there is no possible module | |
735 | * with a prod_id/manf_id/card_id match. | |
736 | */ | |
737 | if (!dev->allow_func_id_match) | |
738 | return 0; | |
739 | } | |
740 | ||
ea7b3882 DB |
741 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { |
742 | if (!dev->socket->fake_cis) { | |
743 | /* FIXME: evaluate using firmware helpers to | |
744 | * automagically load it from userspace */ | |
745 | return 0; | |
746 | } | |
747 | } | |
748 | ||
1ad275e3 DB |
749 | dev->dev.driver_data = (void *) did; |
750 | ||
751 | return 1; | |
752 | } | |
753 | ||
754 | ||
1da177e4 LT |
755 | static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) { |
756 | struct pcmcia_device * p_dev = to_pcmcia_dev(dev); | |
757 | struct pcmcia_driver * p_drv = to_pcmcia_drv(drv); | |
1ad275e3 | 758 | struct pcmcia_device_id *did = p_drv->id_table; |
1da177e4 LT |
759 | |
760 | /* matching by cardmgr */ | |
761 | if (p_dev->cardmgr == p_drv) | |
762 | return 1; | |
763 | ||
1ad275e3 DB |
764 | while (did && did->match_flags) { |
765 | if (pcmcia_devmatch(p_dev, did)) | |
766 | return 1; | |
767 | did++; | |
768 | } | |
769 | ||
1da177e4 LT |
770 | return 0; |
771 | } | |
772 | ||
840c2ac5 DB |
773 | #ifdef CONFIG_HOTPLUG |
774 | ||
775 | static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp, | |
776 | char *buffer, int buffer_size) | |
777 | { | |
778 | struct pcmcia_device *p_dev; | |
779 | int i, length = 0; | |
780 | u32 hash[4] = { 0, 0, 0, 0}; | |
781 | ||
782 | if (!dev) | |
783 | return -ENODEV; | |
784 | ||
785 | p_dev = to_pcmcia_dev(dev); | |
786 | ||
787 | /* calculate hashes */ | |
788 | for (i=0; i<4; i++) { | |
789 | if (!p_dev->prod_id[i]) | |
790 | continue; | |
791 | hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); | |
792 | } | |
793 | ||
794 | i = 0; | |
795 | ||
796 | if (add_hotplug_env_var(envp, num_envp, &i, | |
797 | buffer, buffer_size, &length, | |
798 | "SOCKET_NO=%u", | |
799 | p_dev->socket->sock)) | |
800 | return -ENOMEM; | |
801 | ||
802 | if (add_hotplug_env_var(envp, num_envp, &i, | |
803 | buffer, buffer_size, &length, | |
804 | "DEVICE_NO=%02X", | |
805 | p_dev->device_no)) | |
806 | return -ENOMEM; | |
807 | ||
808 | if (add_hotplug_env_var(envp, num_envp, &i, | |
809 | buffer, buffer_size, &length, | |
810 | "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" | |
811 | "pa%08Xpb%08Xpc%08Xpd%08X", | |
812 | p_dev->has_manf_id ? p_dev->manf_id : 0, | |
813 | p_dev->has_card_id ? p_dev->card_id : 0, | |
814 | p_dev->has_func_id ? p_dev->func_id : 0, | |
815 | p_dev->func, | |
816 | p_dev->device_no, | |
817 | hash[0], | |
818 | hash[1], | |
819 | hash[2], | |
820 | hash[3])) | |
821 | return -ENOMEM; | |
822 | ||
823 | envp[i] = NULL; | |
824 | ||
825 | return 0; | |
826 | } | |
827 | ||
828 | #else | |
829 | ||
830 | static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp, | |
831 | char *buffer, int buffer_size) | |
832 | { | |
833 | return -ENODEV; | |
834 | } | |
835 | ||
836 | #endif | |
837 | ||
1da177e4 LT |
838 | /************************ per-device sysfs output ***************************/ |
839 | ||
840 | #define pcmcia_device_attr(field, test, format) \ | |
e404e274 | 841 | static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
842 | { \ |
843 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
844 | return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \ | |
845 | } | |
846 | ||
847 | #define pcmcia_device_stringattr(name, field) \ | |
e404e274 | 848 | static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
849 | { \ |
850 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
851 | return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \ | |
852 | } | |
853 | ||
854 | pcmcia_device_attr(func, socket, "0x%02x\n"); | |
855 | pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); | |
856 | pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); | |
857 | pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); | |
858 | pcmcia_device_stringattr(prod_id1, prod_id[0]); | |
859 | pcmcia_device_stringattr(prod_id2, prod_id[1]); | |
860 | pcmcia_device_stringattr(prod_id3, prod_id[2]); | |
861 | pcmcia_device_stringattr(prod_id4, prod_id[3]); | |
862 | ||
863 | static struct device_attribute pcmcia_dev_attrs[] = { | |
864 | __ATTR(function, 0444, func_show, NULL), | |
865 | __ATTR_RO(func_id), | |
866 | __ATTR_RO(manf_id), | |
867 | __ATTR_RO(card_id), | |
868 | __ATTR_RO(prod_id1), | |
869 | __ATTR_RO(prod_id2), | |
870 | __ATTR_RO(prod_id3), | |
871 | __ATTR_RO(prod_id4), | |
872 | __ATTR_NULL, | |
873 | }; | |
874 | ||
875 | ||
876 | /*====================================================================== | |
877 | ||
878 | These manage a ring buffer of events pending for one user process | |
879 | ||
880 | ======================================================================*/ | |
881 | ||
882 | static int queue_empty(user_info_t *user) | |
883 | { | |
884 | return (user->event_head == user->event_tail); | |
885 | } | |
886 | ||
887 | static event_t get_queued_event(user_info_t *user) | |
888 | { | |
889 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
890 | return user->event[user->event_tail]; | |
891 | } | |
892 | ||
893 | static void queue_event(user_info_t *user, event_t event) | |
894 | { | |
895 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
896 | if (user->event_head == user->event_tail) | |
897 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
898 | user->event[user->event_head] = event; | |
899 | } | |
900 | ||
901 | static void handle_event(struct pcmcia_bus_socket *s, event_t event) | |
902 | { | |
903 | user_info_t *user; | |
904 | for (user = s->user; user; user = user->next) | |
905 | queue_event(user, event); | |
906 | wake_up_interruptible(&s->queue); | |
907 | } | |
908 | ||
909 | ||
910 | /*====================================================================== | |
911 | ||
912 | The card status event handler. | |
913 | ||
914 | ======================================================================*/ | |
915 | ||
916 | struct send_event_data { | |
917 | struct pcmcia_socket *skt; | |
918 | event_t event; | |
919 | int priority; | |
920 | }; | |
921 | ||
922 | static int send_event_callback(struct device *dev, void * _data) | |
923 | { | |
924 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
925 | struct send_event_data *data = _data; | |
926 | ||
927 | /* we get called for all sockets, but may only pass the event | |
928 | * for drivers _on the affected socket_ */ | |
929 | if (p_dev->socket != data->skt) | |
930 | return 0; | |
931 | ||
932 | if (p_dev->client.state & (CLIENT_UNBOUND|CLIENT_STALE)) | |
933 | return 0; | |
934 | ||
935 | if (p_dev->client.EventMask & data->event) | |
936 | return EVENT(&p_dev->client, data->event, data->priority); | |
937 | ||
938 | return 0; | |
939 | } | |
940 | ||
941 | static int send_event(struct pcmcia_socket *s, event_t event, int priority) | |
942 | { | |
943 | int ret = 0; | |
944 | struct send_event_data private; | |
945 | struct pcmcia_bus_socket *skt = pcmcia_get_bus_socket(s->pcmcia); | |
946 | ||
947 | if (!skt) | |
948 | return 0; | |
949 | ||
950 | private.skt = s; | |
951 | private.event = event; | |
952 | private.priority = priority; | |
953 | ||
954 | ret = bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback); | |
955 | ||
956 | pcmcia_put_bus_socket(skt); | |
957 | return ret; | |
958 | } /* send_event */ | |
959 | ||
960 | ||
961 | /* Normally, the event is passed to individual drivers after | |
962 | * informing userspace. Only for CS_EVENT_CARD_REMOVAL this | |
963 | * is inversed to maintain historic compatibility. | |
964 | */ | |
965 | ||
966 | static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) | |
967 | { | |
968 | struct pcmcia_bus_socket *s = skt->pcmcia; | |
969 | int ret = 0; | |
970 | ||
971 | ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n", | |
972 | event, priority, s); | |
973 | ||
974 | switch (event) { | |
975 | ||
976 | case CS_EVENT_CARD_REMOVAL: | |
977 | s->state &= ~DS_SOCKET_PRESENT; | |
978 | send_event(skt, event, priority); | |
979 | unbind_request(s); | |
980 | handle_event(s, event); | |
981 | break; | |
982 | ||
983 | case CS_EVENT_CARD_INSERTION: | |
984 | s->state |= DS_SOCKET_PRESENT; | |
985 | pcmcia_card_add(skt); | |
986 | handle_event(s, event); | |
987 | break; | |
988 | ||
989 | case CS_EVENT_EJECTION_REQUEST: | |
990 | ret = send_event(skt, event, priority); | |
991 | break; | |
992 | ||
993 | default: | |
994 | handle_event(s, event); | |
995 | send_event(skt, event, priority); | |
996 | break; | |
997 | } | |
998 | ||
999 | return 0; | |
1000 | } /* ds_event */ | |
1001 | ||
1002 | ||
1003 | /*====================================================================== | |
1004 | ||
1005 | bind_request() and bind_device() are merged by now. Register_client() | |
1006 | is called right at the end of bind_request(), during the driver's | |
1007 | ->attach() call. Individual descriptions: | |
1008 | ||
1009 | bind_request() connects a socket to a particular client driver. | |
1010 | It looks up the specified device ID in the list of registered | |
1011 | drivers, binds it to the socket, and tries to create an instance | |
1012 | of the device. unbind_request() deletes a driver instance. | |
1013 | ||
1014 | Bind_device() associates a device driver with a particular socket. | |
1015 | It is normally called by Driver Services after it has identified | |
1016 | a newly inserted card. An instance of that driver will then be | |
1017 | eligible to register as a client of this socket. | |
1018 | ||
1019 | Register_client() uses the dev_info_t handle to match the | |
1020 | caller with a socket. The driver must have already been bound | |
1021 | to a socket with bind_device() -- in fact, bind_device() | |
1022 | allocates the client structure that will be used. | |
1023 | ||
1024 | ======================================================================*/ | |
1025 | ||
1026 | static int bind_request(struct pcmcia_bus_socket *s, bind_info_t *bind_info) | |
1027 | { | |
1028 | struct pcmcia_driver *p_drv; | |
1029 | struct pcmcia_device *p_dev; | |
1030 | int ret = 0; | |
1031 | unsigned long flags; | |
1032 | ||
1033 | s = pcmcia_get_bus_socket(s); | |
1034 | if (!s) | |
1035 | return -EINVAL; | |
1036 | ||
1037 | ds_dbg(2, "bind_request(%d, '%s')\n", s->parent->sock, | |
1038 | (char *)bind_info->dev_info); | |
1039 | ||
1040 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
1041 | if (!p_drv) { | |
1042 | ret = -EINVAL; | |
1043 | goto err_put; | |
1044 | } | |
1045 | ||
1046 | if (!try_module_get(p_drv->owner)) { | |
1047 | ret = -EINVAL; | |
1048 | goto err_put_driver; | |
1049 | } | |
1050 | ||
1051 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
1052 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
1053 | if (p_dev->func == bind_info->function) { | |
1054 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
1055 | if (p_dev->cardmgr) { | |
1056 | /* if there's already a device | |
1057 | * registered, and it was registered | |
1058 | * by userspace before, we need to | |
1059 | * return the "instance". */ | |
1060 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1061 | bind_info->instance = p_dev->instance; | |
1062 | ret = -EBUSY; | |
1063 | goto err_put_module; | |
1064 | } else { | |
1065 | /* the correct driver managed to bind | |
1066 | * itself magically to the correct | |
1067 | * device. */ | |
1068 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1069 | p_dev->cardmgr = p_drv; | |
1070 | ret = 0; | |
1071 | goto err_put_module; | |
1072 | } | |
1073 | } else if (!p_dev->dev.driver) { | |
1074 | /* there's already a device available where | |
1075 | * no device has been bound to yet. So we don't | |
1076 | * need to register a device! */ | |
1077 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1078 | goto rescan; | |
1079 | } | |
1080 | } | |
1081 | } | |
1082 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1083 | ||
1084 | p_dev = pcmcia_device_add(s, bind_info->function); | |
1085 | if (!p_dev) { | |
1086 | ret = -EIO; | |
1087 | goto err_put_module; | |
1088 | } | |
1089 | ||
1090 | rescan: | |
1091 | p_dev->cardmgr = p_drv; | |
1092 | ||
1ad275e3 DB |
1093 | /* if a driver is already running, we can abort */ |
1094 | if (p_dev->dev.driver) | |
1095 | goto err_put_module; | |
1da177e4 LT |
1096 | |
1097 | /* | |
1098 | * Prevent this racing with a card insertion. | |
1099 | */ | |
1100 | down(&s->parent->skt_sem); | |
1101 | bus_rescan_devices(&pcmcia_bus_type); | |
1102 | up(&s->parent->skt_sem); | |
1103 | ||
1104 | /* check whether the driver indeed matched. I don't care if this | |
1105 | * is racy or not, because it can only happen on cardmgr access | |
1106 | * paths... | |
1107 | */ | |
1108 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
1109 | p_dev->cardmgr = NULL; | |
1110 | ||
1111 | err_put_module: | |
1112 | module_put(p_drv->owner); | |
1113 | err_put_driver: | |
1114 | put_driver(&p_drv->drv); | |
1115 | err_put: | |
1116 | pcmcia_put_bus_socket(s); | |
1117 | ||
1118 | return (ret); | |
1119 | } /* bind_request */ | |
1120 | ||
1121 | ||
1122 | int pcmcia_register_client(client_handle_t *handle, client_reg_t *req) | |
1123 | { | |
1124 | client_t *client = NULL; | |
1125 | struct pcmcia_socket *s; | |
1126 | struct pcmcia_bus_socket *skt = NULL; | |
1127 | struct pcmcia_device *p_dev = NULL; | |
1128 | ||
1129 | /* Look for unbound client with matching dev_info */ | |
1130 | down_read(&pcmcia_socket_list_rwsem); | |
1131 | list_for_each_entry(s, &pcmcia_socket_list, socket_list) { | |
1132 | unsigned long flags; | |
1133 | ||
1134 | if (s->state & SOCKET_CARDBUS) | |
1135 | continue; | |
1136 | ||
1137 | skt = s->pcmcia; | |
1138 | if (!skt) | |
1139 | continue; | |
1140 | skt = pcmcia_get_bus_socket(skt); | |
1141 | if (!skt) | |
1142 | continue; | |
1143 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
1144 | list_for_each_entry(p_dev, &skt->devices_list, socket_device_list) { | |
1145 | struct pcmcia_driver *p_drv; | |
1146 | p_dev = pcmcia_get_dev(p_dev); | |
1147 | if (!p_dev) | |
1148 | continue; | |
1149 | if (!(p_dev->client.state & CLIENT_UNBOUND) || | |
1150 | (!p_dev->dev.driver)) { | |
1151 | pcmcia_put_dev(p_dev); | |
1152 | continue; | |
1153 | } | |
1154 | p_drv = to_pcmcia_drv(p_dev->dev.driver); | |
1155 | if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) { | |
1156 | client = &p_dev->client; | |
1157 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1158 | goto found; | |
1159 | } | |
1160 | pcmcia_put_dev(p_dev); | |
1161 | } | |
1162 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1163 | pcmcia_put_bus_socket(skt); | |
1164 | } | |
1165 | found: | |
1166 | up_read(&pcmcia_socket_list_rwsem); | |
1167 | if (!p_dev || !client) | |
1168 | return -ENODEV; | |
1169 | ||
1170 | pcmcia_put_bus_socket(skt); /* safe, as we already hold a reference from bind_device */ | |
1171 | ||
1172 | *handle = client; | |
1173 | client->state &= ~CLIENT_UNBOUND; | |
1174 | client->Socket = s; | |
1175 | client->EventMask = req->EventMask; | |
1176 | client->event_handler = req->event_handler; | |
1177 | client->event_callback_args = req->event_callback_args; | |
1178 | client->event_callback_args.client_handle = client; | |
1179 | ||
1180 | if (s->state & SOCKET_CARDBUS) | |
1181 | client->state |= CLIENT_CARDBUS; | |
1182 | ||
1183 | if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0) && | |
1184 | (client->Function != BIND_FN_ALL)) { | |
1185 | cistpl_longlink_mfc_t mfc; | |
1186 | if (pccard_read_tuple(s, client->Function, CISTPL_LONGLINK_MFC, &mfc) | |
1187 | == CS_SUCCESS) | |
1188 | s->functions = mfc.nfn; | |
1189 | else | |
1190 | s->functions = 1; | |
1191 | s->config = kmalloc(sizeof(config_t) * s->functions, | |
1192 | GFP_KERNEL); | |
1193 | if (!s->config) | |
1194 | goto out_no_resource; | |
1195 | memset(s->config, 0, sizeof(config_t) * s->functions); | |
1196 | } | |
1197 | ||
1198 | ds_dbg(1, "register_client(): client 0x%p, dev %s\n", | |
1199 | client, p_dev->dev.bus_id); | |
1200 | if (client->EventMask & CS_EVENT_REGISTRATION_COMPLETE) | |
1201 | EVENT(client, CS_EVENT_REGISTRATION_COMPLETE, CS_EVENT_PRI_LOW); | |
1202 | ||
1203 | if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) { | |
1204 | if (client->EventMask & CS_EVENT_CARD_INSERTION) | |
1205 | EVENT(client, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); | |
1206 | } | |
1207 | ||
1208 | return CS_SUCCESS; | |
1209 | ||
1210 | out_no_resource: | |
1211 | pcmcia_put_dev(p_dev); | |
1212 | return CS_OUT_OF_RESOURCE; | |
1213 | } /* register_client */ | |
1214 | EXPORT_SYMBOL(pcmcia_register_client); | |
1215 | ||
1216 | ||
1217 | /*====================================================================*/ | |
1218 | ||
1219 | extern struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s); | |
1220 | ||
1221 | static int get_device_info(struct pcmcia_bus_socket *s, bind_info_t *bind_info, int first) | |
1222 | { | |
1223 | dev_node_t *node; | |
1224 | struct pcmcia_device *p_dev; | |
1225 | unsigned long flags; | |
1226 | int ret = 0; | |
1227 | ||
1228 | #ifdef CONFIG_CARDBUS | |
1229 | /* | |
1230 | * Some unbelievably ugly code to associate the PCI cardbus | |
1231 | * device and its driver with the PCMCIA "bind" information. | |
1232 | */ | |
1233 | { | |
1234 | struct pci_bus *bus; | |
1235 | ||
1236 | bus = pcmcia_lookup_bus(s->parent); | |
1237 | if (bus) { | |
1238 | struct list_head *list; | |
1239 | struct pci_dev *dev = NULL; | |
1240 | ||
1241 | list = bus->devices.next; | |
1242 | while (list != &bus->devices) { | |
1243 | struct pci_dev *pdev = pci_dev_b(list); | |
1244 | list = list->next; | |
1245 | ||
1246 | if (first) { | |
1247 | dev = pdev; | |
1248 | break; | |
1249 | } | |
1250 | ||
1251 | /* Try to handle "next" here some way? */ | |
1252 | } | |
1253 | if (dev && dev->driver) { | |
1254 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
1255 | bind_info->major = 0; | |
1256 | bind_info->minor = 0; | |
1257 | bind_info->next = NULL; | |
1258 | return 0; | |
1259 | } | |
1260 | } | |
1261 | } | |
1262 | #endif | |
1263 | ||
1264 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
1265 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
1266 | if (p_dev->func == bind_info->function) { | |
1267 | p_dev = pcmcia_get_dev(p_dev); | |
1268 | if (!p_dev) | |
1269 | continue; | |
1270 | goto found; | |
1271 | } | |
1272 | } | |
1273 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1274 | return -ENODEV; | |
1275 | ||
1276 | found: | |
1277 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1278 | ||
1279 | if ((!p_dev->instance) || | |
1280 | (p_dev->instance->state & DEV_CONFIG_PENDING)) { | |
1281 | ret = -EAGAIN; | |
1282 | goto err_put; | |
1283 | } | |
1284 | ||
1285 | if (first) | |
1286 | node = p_dev->instance->dev; | |
1287 | else | |
1288 | for (node = p_dev->instance->dev; node; node = node->next) | |
1289 | if (node == bind_info->next) | |
1290 | break; | |
1291 | if (!node) { | |
1292 | ret = -ENODEV; | |
1293 | goto err_put; | |
1294 | } | |
1295 | ||
1296 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
1297 | bind_info->major = node->major; | |
1298 | bind_info->minor = node->minor; | |
1299 | bind_info->next = node->next; | |
1300 | ||
1301 | err_put: | |
1302 | pcmcia_put_dev(p_dev); | |
1303 | return (ret); | |
1304 | } /* get_device_info */ | |
1305 | ||
1306 | /*====================================================================*/ | |
1307 | ||
1308 | /* unbind _all_ devices attached to a given pcmcia_bus_socket. The | |
1309 | * drivers have been called with EVENT_CARD_REMOVAL before. | |
1310 | */ | |
1311 | static int unbind_request(struct pcmcia_bus_socket *s) | |
1312 | { | |
1313 | struct pcmcia_device *p_dev; | |
1314 | unsigned long flags; | |
1315 | ||
1316 | ds_dbg(2, "unbind_request(%d)\n", s->parent->sock); | |
1317 | ||
1318 | s->device_count = 0; | |
1319 | ||
1320 | for (;;) { | |
1321 | /* unregister all pcmcia_devices registered with this socket*/ | |
1322 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
1323 | if (list_empty(&s->devices_list)) { | |
1324 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1325 | return 0; | |
1326 | } | |
1327 | p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list); | |
1328 | list_del(&p_dev->socket_device_list); | |
1329 | p_dev->client.state |= CLIENT_STALE; | |
1330 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
1331 | ||
1332 | device_unregister(&p_dev->dev); | |
1333 | } | |
1334 | ||
1335 | return 0; | |
1336 | } /* unbind_request */ | |
1337 | ||
1338 | int pcmcia_deregister_client(client_handle_t handle) | |
1339 | { | |
1340 | struct pcmcia_socket *s; | |
1341 | int i; | |
1342 | struct pcmcia_device *p_dev = handle_to_pdev(handle); | |
1343 | ||
1344 | if (CHECK_HANDLE(handle)) | |
1345 | return CS_BAD_HANDLE; | |
1346 | ||
1347 | s = SOCKET(handle); | |
1348 | ds_dbg(1, "deregister_client(%p)\n", handle); | |
1349 | ||
1350 | if (handle->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED)) | |
1351 | goto warn_out; | |
1352 | for (i = 0; i < MAX_WIN; i++) | |
1353 | if (handle->state & CLIENT_WIN_REQ(i)) | |
1354 | goto warn_out; | |
1355 | ||
1356 | if (handle->state & CLIENT_STALE) { | |
1357 | handle->client_magic = 0; | |
1358 | handle->state &= ~CLIENT_STALE; | |
1359 | pcmcia_put_dev(p_dev); | |
1360 | } else { | |
1361 | handle->state = CLIENT_UNBOUND; | |
1362 | handle->event_handler = NULL; | |
1363 | } | |
1364 | ||
1365 | return CS_SUCCESS; | |
1366 | warn_out: | |
1367 | printk(KERN_WARNING "ds: deregister_client was called too early.\n"); | |
1368 | return CS_IN_USE; | |
1369 | } /* deregister_client */ | |
1370 | EXPORT_SYMBOL(pcmcia_deregister_client); | |
1371 | ||
1372 | ||
1373 | /*====================================================================== | |
1374 | ||
1375 | The user-mode PC Card device interface | |
1376 | ||
1377 | ======================================================================*/ | |
1378 | ||
1379 | static int ds_open(struct inode *inode, struct file *file) | |
1380 | { | |
1381 | socket_t i = iminor(inode); | |
1382 | struct pcmcia_bus_socket *s; | |
1383 | user_info_t *user; | |
1384 | ||
1385 | ds_dbg(0, "ds_open(socket %d)\n", i); | |
1386 | ||
1387 | s = get_socket_info_by_nr(i); | |
1388 | if (!s) | |
1389 | return -ENODEV; | |
1390 | s = pcmcia_get_bus_socket(s); | |
1391 | if (!s) | |
1392 | return -ENODEV; | |
1393 | ||
1394 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
1395 | if (s->state & DS_SOCKET_BUSY) { | |
1396 | pcmcia_put_bus_socket(s); | |
1397 | return -EBUSY; | |
1398 | } | |
1399 | else | |
1400 | s->state |= DS_SOCKET_BUSY; | |
1401 | } | |
1402 | ||
1403 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
1404 | if (!user) { | |
1405 | pcmcia_put_bus_socket(s); | |
1406 | return -ENOMEM; | |
1407 | } | |
1408 | user->event_tail = user->event_head = 0; | |
1409 | user->next = s->user; | |
1410 | user->user_magic = USER_MAGIC; | |
1411 | user->socket = s; | |
1412 | s->user = user; | |
1413 | file->private_data = user; | |
1414 | ||
1415 | if (s->state & DS_SOCKET_PRESENT) | |
1416 | queue_event(user, CS_EVENT_CARD_INSERTION); | |
1417 | return 0; | |
1418 | } /* ds_open */ | |
1419 | ||
1420 | /*====================================================================*/ | |
1421 | ||
1422 | static int ds_release(struct inode *inode, struct file *file) | |
1423 | { | |
1424 | struct pcmcia_bus_socket *s; | |
1425 | user_info_t *user, **link; | |
1426 | ||
1427 | ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); | |
1428 | ||
1429 | user = file->private_data; | |
1430 | if (CHECK_USER(user)) | |
1431 | goto out; | |
1432 | ||
1433 | s = user->socket; | |
1434 | ||
1435 | /* Unlink user data structure */ | |
1436 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
1437 | s->state &= ~DS_SOCKET_BUSY; | |
1438 | } | |
1439 | file->private_data = NULL; | |
1440 | for (link = &s->user; *link; link = &(*link)->next) | |
1441 | if (*link == user) break; | |
1442 | if (link == NULL) | |
1443 | goto out; | |
1444 | *link = user->next; | |
1445 | user->user_magic = 0; | |
1446 | kfree(user); | |
1447 | pcmcia_put_bus_socket(s); | |
1448 | out: | |
1449 | return 0; | |
1450 | } /* ds_release */ | |
1451 | ||
1452 | /*====================================================================*/ | |
1453 | ||
1454 | static ssize_t ds_read(struct file *file, char __user *buf, | |
1455 | size_t count, loff_t *ppos) | |
1456 | { | |
1457 | struct pcmcia_bus_socket *s; | |
1458 | user_info_t *user; | |
1459 | int ret; | |
1460 | ||
1461 | ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
1462 | ||
1463 | if (count < 4) | |
1464 | return -EINVAL; | |
1465 | ||
1466 | user = file->private_data; | |
1467 | if (CHECK_USER(user)) | |
1468 | return -EIO; | |
1469 | ||
1470 | s = user->socket; | |
1471 | if (s->state & DS_SOCKET_DEAD) | |
1472 | return -EIO; | |
1473 | ||
1474 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); | |
1475 | if (ret == 0) | |
1476 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
1477 | ||
1478 | return ret; | |
1479 | } /* ds_read */ | |
1480 | ||
1481 | /*====================================================================*/ | |
1482 | ||
1483 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
1484 | size_t count, loff_t *ppos) | |
1485 | { | |
1486 | ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
1487 | ||
1488 | if (count != 4) | |
1489 | return -EINVAL; | |
1490 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
1491 | return -EBADF; | |
1492 | ||
1493 | return -EIO; | |
1494 | } /* ds_write */ | |
1495 | ||
1496 | /*====================================================================*/ | |
1497 | ||
1498 | /* No kernel lock - fine */ | |
1499 | static u_int ds_poll(struct file *file, poll_table *wait) | |
1500 | { | |
1501 | struct pcmcia_bus_socket *s; | |
1502 | user_info_t *user; | |
1503 | ||
1504 | ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
1505 | ||
1506 | user = file->private_data; | |
1507 | if (CHECK_USER(user)) | |
1508 | return POLLERR; | |
1509 | s = user->socket; | |
1510 | /* | |
1511 | * We don't check for a dead socket here since that | |
1512 | * will send cardmgr into an endless spin. | |
1513 | */ | |
1514 | poll_wait(file, &s->queue, wait); | |
1515 | if (!queue_empty(user)) | |
1516 | return POLLIN | POLLRDNORM; | |
1517 | return 0; | |
1518 | } /* ds_poll */ | |
1519 | ||
1520 | /*====================================================================*/ | |
1521 | ||
1522 | extern int pcmcia_adjust_resource_info(adjust_t *adj); | |
1523 | ||
1524 | static int ds_ioctl(struct inode * inode, struct file * file, | |
1525 | u_int cmd, u_long arg) | |
1526 | { | |
1527 | struct pcmcia_bus_socket *s; | |
1528 | void __user *uarg = (char __user *)arg; | |
1529 | u_int size; | |
1530 | int ret, err; | |
1531 | ds_ioctl_arg_t *buf; | |
1532 | user_info_t *user; | |
1533 | ||
1534 | ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); | |
1535 | ||
1536 | user = file->private_data; | |
1537 | if (CHECK_USER(user)) | |
1538 | return -EIO; | |
1539 | ||
1540 | s = user->socket; | |
1541 | if (s->state & DS_SOCKET_DEAD) | |
1542 | return -EIO; | |
1543 | ||
1544 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
1545 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; | |
1546 | ||
1547 | /* Permission check */ | |
1548 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
1549 | return -EPERM; | |
1550 | ||
1551 | if (cmd & IOC_IN) { | |
1552 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
1553 | ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); | |
1554 | return -EFAULT; | |
1555 | } | |
1556 | } | |
1557 | if (cmd & IOC_OUT) { | |
1558 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
1559 | ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); | |
1560 | return -EFAULT; | |
1561 | } | |
1562 | } | |
1563 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
1564 | if (!buf) | |
1565 | return -ENOMEM; | |
1566 | ||
1567 | err = ret = 0; | |
1568 | ||
1569 | if (cmd & IOC_IN) __copy_from_user((char *)buf, uarg, size); | |
1570 | ||
1571 | switch (cmd) { | |
1572 | case DS_ADJUST_RESOURCE_INFO: | |
1573 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
1574 | break; | |
1575 | case DS_GET_CARD_SERVICES_INFO: | |
1576 | ret = pcmcia_get_card_services_info(&buf->servinfo); | |
1577 | break; | |
1578 | case DS_GET_CONFIGURATION_INFO: | |
1579 | if (buf->config.Function && | |
1580 | (buf->config.Function >= s->parent->functions)) | |
1581 | ret = CS_BAD_ARGS; | |
1582 | else | |
1583 | ret = pccard_get_configuration_info(s->parent, | |
1584 | buf->config.Function, &buf->config); | |
1585 | break; | |
1586 | case DS_GET_FIRST_TUPLE: | |
1587 | down(&s->parent->skt_sem); | |
1588 | pcmcia_validate_mem(s->parent); | |
1589 | up(&s->parent->skt_sem); | |
1590 | ret = pccard_get_first_tuple(s->parent, BIND_FN_ALL, &buf->tuple); | |
1591 | break; | |
1592 | case DS_GET_NEXT_TUPLE: | |
1593 | ret = pccard_get_next_tuple(s->parent, BIND_FN_ALL, &buf->tuple); | |
1594 | break; | |
1595 | case DS_GET_TUPLE_DATA: | |
1596 | buf->tuple.TupleData = buf->tuple_parse.data; | |
1597 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
1598 | ret = pccard_get_tuple_data(s->parent, &buf->tuple); | |
1599 | break; | |
1600 | case DS_PARSE_TUPLE: | |
1601 | buf->tuple.TupleData = buf->tuple_parse.data; | |
1602 | ret = pccard_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); | |
1603 | break; | |
1604 | case DS_RESET_CARD: | |
1605 | ret = pccard_reset_card(s->parent); | |
1606 | break; | |
1607 | case DS_GET_STATUS: | |
1608 | if (buf->status.Function && | |
1609 | (buf->status.Function >= s->parent->functions)) | |
1610 | ret = CS_BAD_ARGS; | |
1611 | else | |
1612 | ret = pccard_get_status(s->parent, buf->status.Function, &buf->status); | |
1613 | break; | |
1614 | case DS_VALIDATE_CIS: | |
1615 | down(&s->parent->skt_sem); | |
1616 | pcmcia_validate_mem(s->parent); | |
1617 | up(&s->parent->skt_sem); | |
1618 | ret = pccard_validate_cis(s->parent, BIND_FN_ALL, &buf->cisinfo); | |
1619 | break; | |
1620 | case DS_SUSPEND_CARD: | |
1621 | ret = pcmcia_suspend_card(s->parent); | |
1622 | break; | |
1623 | case DS_RESUME_CARD: | |
1624 | ret = pcmcia_resume_card(s->parent); | |
1625 | break; | |
1626 | case DS_EJECT_CARD: | |
1627 | err = pcmcia_eject_card(s->parent); | |
1628 | break; | |
1629 | case DS_INSERT_CARD: | |
1630 | err = pcmcia_insert_card(s->parent); | |
1631 | break; | |
1632 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
1633 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
1634 | err = -EPERM; | |
1635 | goto free_out; | |
1636 | } | |
1637 | if (buf->conf_reg.Function && | |
1638 | (buf->conf_reg.Function >= s->parent->functions)) | |
1639 | ret = CS_BAD_ARGS; | |
1640 | else | |
1641 | ret = pccard_access_configuration_register(s->parent, | |
1642 | buf->conf_reg.Function, &buf->conf_reg); | |
1643 | break; | |
1644 | case DS_GET_FIRST_REGION: | |
1645 | case DS_GET_NEXT_REGION: | |
1646 | case DS_BIND_MTD: | |
1647 | if (!capable(CAP_SYS_ADMIN)) { | |
1648 | err = -EPERM; | |
1649 | goto free_out; | |
1650 | } else { | |
1651 | static int printed = 0; | |
1652 | if (!printed) { | |
1653 | printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
1654 | printk(KERN_WARNING "MTD handling any more.\n"); | |
1655 | printed++; | |
1656 | } | |
1657 | } | |
1658 | err = -EINVAL; | |
1659 | goto free_out; | |
1660 | break; | |
1661 | case DS_GET_FIRST_WINDOW: | |
1662 | ret = pcmcia_get_window(s->parent, &buf->win_info.handle, 0, | |
1663 | &buf->win_info.window); | |
1664 | break; | |
1665 | case DS_GET_NEXT_WINDOW: | |
1666 | ret = pcmcia_get_window(s->parent, &buf->win_info.handle, | |
1667 | buf->win_info.handle->index + 1, &buf->win_info.window); | |
1668 | break; | |
1669 | case DS_GET_MEM_PAGE: | |
1670 | ret = pcmcia_get_mem_page(buf->win_info.handle, | |
1671 | &buf->win_info.map); | |
1672 | break; | |
1673 | case DS_REPLACE_CIS: | |
1674 | ret = pcmcia_replace_cis(s->parent, &buf->cisdump); | |
1675 | break; | |
1676 | case DS_BIND_REQUEST: | |
1677 | if (!capable(CAP_SYS_ADMIN)) { | |
1678 | err = -EPERM; | |
1679 | goto free_out; | |
1680 | } | |
1681 | err = bind_request(s, &buf->bind_info); | |
1682 | break; | |
1683 | case DS_GET_DEVICE_INFO: | |
1684 | err = get_device_info(s, &buf->bind_info, 1); | |
1685 | break; | |
1686 | case DS_GET_NEXT_DEVICE: | |
1687 | err = get_device_info(s, &buf->bind_info, 0); | |
1688 | break; | |
1689 | case DS_UNBIND_REQUEST: | |
1690 | err = 0; | |
1691 | break; | |
1692 | default: | |
1693 | err = -EINVAL; | |
1694 | } | |
1695 | ||
1696 | if ((err == 0) && (ret != CS_SUCCESS)) { | |
1697 | ds_dbg(2, "ds_ioctl: ret = %d\n", ret); | |
1698 | switch (ret) { | |
1699 | case CS_BAD_SOCKET: case CS_NO_CARD: | |
1700 | err = -ENODEV; break; | |
1701 | case CS_BAD_ARGS: case CS_BAD_ATTRIBUTE: case CS_BAD_IRQ: | |
1702 | case CS_BAD_TUPLE: | |
1703 | err = -EINVAL; break; | |
1704 | case CS_IN_USE: | |
1705 | err = -EBUSY; break; | |
1706 | case CS_OUT_OF_RESOURCE: | |
1707 | err = -ENOSPC; break; | |
1708 | case CS_NO_MORE_ITEMS: | |
1709 | err = -ENODATA; break; | |
1710 | case CS_UNSUPPORTED_FUNCTION: | |
1711 | err = -ENOSYS; break; | |
1712 | default: | |
1713 | err = -EIO; break; | |
1714 | } | |
1715 | } | |
1716 | ||
1717 | if (cmd & IOC_OUT) { | |
1718 | if (__copy_to_user(uarg, (char *)buf, size)) | |
1719 | err = -EFAULT; | |
1720 | } | |
1721 | ||
1722 | free_out: | |
1723 | kfree(buf); | |
1724 | return err; | |
1725 | } /* ds_ioctl */ | |
1726 | ||
1727 | /*====================================================================*/ | |
1728 | ||
1729 | static struct file_operations ds_fops = { | |
1730 | .owner = THIS_MODULE, | |
1731 | .open = ds_open, | |
1732 | .release = ds_release, | |
1733 | .ioctl = ds_ioctl, | |
1734 | .read = ds_read, | |
1735 | .write = ds_write, | |
1736 | .poll = ds_poll, | |
1737 | }; | |
1738 | ||
1739 | static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev) | |
1740 | { | |
1741 | struct pcmcia_socket *socket = class_get_devdata(class_dev); | |
1742 | struct pcmcia_bus_socket *s; | |
1743 | int ret; | |
1744 | ||
1745 | s = kmalloc(sizeof(struct pcmcia_bus_socket), GFP_KERNEL); | |
1746 | if(!s) | |
1747 | return -ENOMEM; | |
1748 | memset(s, 0, sizeof(struct pcmcia_bus_socket)); | |
1749 | ||
1750 | /* get reference to parent socket */ | |
1751 | s->parent = pcmcia_get_socket(socket); | |
1752 | if (!s->parent) { | |
1753 | printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket); | |
1754 | kfree (s); | |
1755 | return -ENODEV; | |
1756 | } | |
1757 | ||
1758 | kref_init(&s->refcount); | |
1759 | ||
1760 | /* | |
1761 | * Ugly. But we want to wait for the socket threads to have started up. | |
1762 | * We really should let the drivers themselves drive some of this.. | |
1763 | */ | |
1764 | msleep(250); | |
1765 | ||
1766 | init_waitqueue_head(&s->queue); | |
1767 | INIT_LIST_HEAD(&s->devices_list); | |
1ad275e3 | 1768 | INIT_WORK(&s->device_add, pcmcia_delayed_add_pseudo_device, s); |
1da177e4 LT |
1769 | |
1770 | /* Set up hotline to Card Services */ | |
1771 | s->callback.owner = THIS_MODULE; | |
1772 | s->callback.event = &ds_event; | |
1773 | s->callback.resources_done = &pcmcia_card_add; | |
ff1fa9ef | 1774 | s->callback.replace_cis = &pcmcia_bus_rescan; |
1da177e4 LT |
1775 | socket->pcmcia = s; |
1776 | ||
1777 | ret = pccard_register_pcmcia(socket, &s->callback); | |
1778 | if (ret) { | |
1779 | printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket); | |
1780 | pcmcia_put_bus_socket(s); | |
1781 | socket->pcmcia = NULL; | |
1782 | return (ret); | |
1783 | } | |
1784 | ||
1785 | return 0; | |
1786 | } | |
1787 | ||
1788 | ||
1789 | static void pcmcia_bus_remove_socket(struct class_device *class_dev) | |
1790 | { | |
1791 | struct pcmcia_socket *socket = class_get_devdata(class_dev); | |
1792 | ||
1793 | if (!socket || !socket->pcmcia) | |
1794 | return; | |
1795 | ||
1796 | pccard_register_pcmcia(socket, NULL); | |
1797 | ||
1798 | socket->pcmcia->state |= DS_SOCKET_DEAD; | |
1799 | pcmcia_put_bus_socket(socket->pcmcia); | |
1800 | socket->pcmcia = NULL; | |
1801 | ||
1802 | return; | |
1803 | } | |
1804 | ||
1805 | ||
1806 | /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ | |
1807 | static struct class_interface pcmcia_bus_interface = { | |
1808 | .class = &pcmcia_socket_class, | |
1809 | .add = &pcmcia_bus_add_socket, | |
1810 | .remove = &pcmcia_bus_remove_socket, | |
1811 | }; | |
1812 | ||
1813 | ||
1814 | struct bus_type pcmcia_bus_type = { | |
1815 | .name = "pcmcia", | |
840c2ac5 | 1816 | .hotplug = pcmcia_bus_hotplug, |
1da177e4 LT |
1817 | .match = pcmcia_bus_match, |
1818 | .dev_attrs = pcmcia_dev_attrs, | |
1819 | }; | |
1820 | EXPORT_SYMBOL(pcmcia_bus_type); | |
1821 | ||
1822 | ||
1823 | static int __init init_pcmcia_bus(void) | |
1824 | { | |
1825 | int i; | |
1826 | ||
1827 | spin_lock_init(&pcmcia_dev_list_lock); | |
1828 | ||
1829 | bus_register(&pcmcia_bus_type); | |
1830 | class_interface_register(&pcmcia_bus_interface); | |
1831 | ||
1832 | /* Set up character device for user mode clients */ | |
1833 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
afbf510d | 1834 | if (i < 0) |
1da177e4 | 1835 | printk(KERN_NOTICE "unable to find a free device # for " |
afbf510d | 1836 | "Driver Services (error=%d)\n", i); |
1da177e4 LT |
1837 | else |
1838 | major_dev = i; | |
1839 | ||
1840 | #ifdef CONFIG_PROC_FS | |
1841 | proc_pccard = proc_mkdir("pccard", proc_bus); | |
1842 | if (proc_pccard) | |
1843 | create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL); | |
1844 | #endif | |
1845 | ||
1846 | return 0; | |
1847 | } | |
1848 | fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that | |
1849 | * pcmcia_socket_class is already registered */ | |
1850 | ||
1851 | ||
1852 | static void __exit exit_pcmcia_bus(void) | |
1853 | { | |
1854 | class_interface_unregister(&pcmcia_bus_interface); | |
1855 | ||
1856 | #ifdef CONFIG_PROC_FS | |
1857 | if (proc_pccard) { | |
1858 | remove_proc_entry("drivers", proc_pccard); | |
1859 | remove_proc_entry("pccard", proc_bus); | |
1860 | } | |
1861 | #endif | |
1862 | if (major_dev != -1) | |
1863 | unregister_chrdev(major_dev, "pcmcia"); | |
1864 | ||
1865 | bus_unregister(&pcmcia_bus_type); | |
1866 | } | |
1867 | module_exit(exit_pcmcia_bus); | |
1868 | ||
1869 | ||
1870 | ||
1871 | /* helpers for backwards-compatible functions */ | |
1872 | ||
1873 | static struct pcmcia_bus_socket * get_socket_info_by_nr(unsigned int nr) | |
1874 | { | |
1875 | struct pcmcia_socket * s = pcmcia_get_socket_by_nr(nr); | |
1876 | if (s && s->pcmcia) | |
1877 | return s->pcmcia; | |
1878 | else | |
1879 | return NULL; | |
1880 | } | |
1881 | ||
1882 | /* backwards-compatible accessing of driver --- by name! */ | |
1883 | ||
1884 | static struct pcmcia_driver * get_pcmcia_driver (dev_info_t *dev_info) | |
1885 | { | |
1886 | struct device_driver *drv; | |
1887 | struct pcmcia_driver *p_drv; | |
1888 | ||
1889 | drv = driver_find((char *) dev_info, &pcmcia_bus_type); | |
1890 | if (!drv) | |
1891 | return NULL; | |
1892 | ||
1893 | p_drv = container_of(drv, struct pcmcia_driver, drv); | |
1894 | ||
1895 | return (p_drv); | |
1896 | } | |
1897 | ||
1898 | MODULE_ALIAS("ds"); |