?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[PATCH] pcmcia: remove client_t usage
[linux-2.6.git] / drivers / pcmcia / ds.c
blob1cae9fda4e4796c4ca70791def47bb7009ccb375
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 - 2005 Dominik Brodowski
14 */
15
16 #include <linux/config.h>
17 #include <linux/kernel.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/errno.h>
21 #include <linux/list.h>
22 #include <linux/delay.h>
23 #include <linux/workqueue.h>
24 #include <linux/crc32.h>
25 #include <linux/firmware.h>
26
27 #define IN_CARD_SERVICES
28 #include <pcmcia/cs_types.h>
29 #include <pcmcia/cs.h>
30 #include <pcmcia/cistpl.h>
31 #include <pcmcia/ds.h>
32 #include <pcmcia/ss.h>
33
34 #include "cs_internal.h"
35 #include "ds_internal.h"
36
37 /*====================================================================*/
38
39 /* Module parameters */
40
41 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
42 MODULE_DESCRIPTION("PCMCIA Driver Services");
43 MODULE_LICENSE("GPL");
44
45 #ifdef DEBUG
46 int ds_pc_debug;
47
48 module_param_named(pc_debug, ds_pc_debug, int, 0644);
49
50 #define ds_dbg(lvl, fmt, arg...) do { \
51 if (ds_pc_debug > (lvl)) \
52 printk(KERN_DEBUG "ds: " fmt , ## arg); \
53 } while (0)
54 #else
55 #define ds_dbg(lvl, fmt, arg...) do { } while (0)
56 #endif
57
58 spinlock_t pcmcia_dev_list_lock;
59
60 static int unbind_request(struct pcmcia_socket *s);
61
62 /*====================================================================*/
63
64 /* code which was in cs.c before */
65
66 /* String tables for error messages */
67
68 typedef struct lookup_t {
69 int key;
70 char *msg;
71 } lookup_t;
72
73 static const lookup_t error_table[] = {
74 { CS_SUCCESS, "Operation succeeded" },
75 { CS_BAD_ADAPTER, "Bad adapter" },
76 { CS_BAD_ATTRIBUTE, "Bad attribute", },
77 { CS_BAD_BASE, "Bad base address" },
78 { CS_BAD_EDC, "Bad EDC" },
79 { CS_BAD_IRQ, "Bad IRQ" },
80 { CS_BAD_OFFSET, "Bad offset" },
81 { CS_BAD_PAGE, "Bad page number" },
82 { CS_READ_FAILURE, "Read failure" },
83 { CS_BAD_SIZE, "Bad size" },
84 { CS_BAD_SOCKET, "Bad socket" },
85 { CS_BAD_TYPE, "Bad type" },
86 { CS_BAD_VCC, "Bad Vcc" },
87 { CS_BAD_VPP, "Bad Vpp" },
88 { CS_BAD_WINDOW, "Bad window" },
89 { CS_WRITE_FAILURE, "Write failure" },
90 { CS_NO_CARD, "No card present" },
91 { CS_UNSUPPORTED_FUNCTION, "Usupported function" },
92 { CS_UNSUPPORTED_MODE, "Unsupported mode" },
93 { CS_BAD_SPEED, "Bad speed" },
94 { CS_BUSY, "Resource busy" },
95 { CS_GENERAL_FAILURE, "General failure" },
96 { CS_WRITE_PROTECTED, "Write protected" },
97 { CS_BAD_ARG_LENGTH, "Bad argument length" },
98 { CS_BAD_ARGS, "Bad arguments" },
99 { CS_CONFIGURATION_LOCKED, "Configuration locked" },
100 { CS_IN_USE, "Resource in use" },
101 { CS_NO_MORE_ITEMS, "No more items" },
102 { CS_OUT_OF_RESOURCE, "Out of resource" },
103 { CS_BAD_HANDLE, "Bad handle" },
104 { CS_BAD_TUPLE, "Bad CIS tuple" }
105 };
106
107
108 static const lookup_t service_table[] = {
109 { AccessConfigurationRegister, "AccessConfigurationRegister" },
110 { AddSocketServices, "AddSocketServices" },
111 { AdjustResourceInfo, "AdjustResourceInfo" },
112 { CheckEraseQueue, "CheckEraseQueue" },
113 { CloseMemory, "CloseMemory" },
114 { DeregisterClient, "DeregisterClient" },
115 { DeregisterEraseQueue, "DeregisterEraseQueue" },
116 { GetCardServicesInfo, "GetCardServicesInfo" },
117 { GetClientInfo, "GetClientInfo" },
118 { GetConfigurationInfo, "GetConfigurationInfo" },
119 { GetEventMask, "GetEventMask" },
120 { GetFirstClient, "GetFirstClient" },
121 { GetFirstRegion, "GetFirstRegion" },
122 { GetFirstTuple, "GetFirstTuple" },
123 { GetNextClient, "GetNextClient" },
124 { GetNextRegion, "GetNextRegion" },
125 { GetNextTuple, "GetNextTuple" },
126 { GetStatus, "GetStatus" },
127 { GetTupleData, "GetTupleData" },
128 { MapMemPage, "MapMemPage" },
129 { ModifyConfiguration, "ModifyConfiguration" },
130 { ModifyWindow, "ModifyWindow" },
131 { OpenMemory, "OpenMemory" },
132 { ParseTuple, "ParseTuple" },
133 { ReadMemory, "ReadMemory" },
134 { RegisterClient, "RegisterClient" },
135 { RegisterEraseQueue, "RegisterEraseQueue" },
136 { RegisterMTD, "RegisterMTD" },
137 { ReleaseConfiguration, "ReleaseConfiguration" },
138 { ReleaseIO, "ReleaseIO" },
139 { ReleaseIRQ, "ReleaseIRQ" },
140 { ReleaseWindow, "ReleaseWindow" },
141 { RequestConfiguration, "RequestConfiguration" },
142 { RequestIO, "RequestIO" },
143 { RequestIRQ, "RequestIRQ" },
144 { RequestSocketMask, "RequestSocketMask" },
145 { RequestWindow, "RequestWindow" },
146 { ResetCard, "ResetCard" },
147 { SetEventMask, "SetEventMask" },
148 { ValidateCIS, "ValidateCIS" },
149 { WriteMemory, "WriteMemory" },
150 { BindDevice, "BindDevice" },
151 { BindMTD, "BindMTD" },
152 { ReportError, "ReportError" },
153 { SuspendCard, "SuspendCard" },
154 { ResumeCard, "ResumeCard" },
155 { EjectCard, "EjectCard" },
156 { InsertCard, "InsertCard" },
157 { ReplaceCIS, "ReplaceCIS" }
158 };
159
160
161 static int pcmcia_report_error(client_handle_t handle, error_info_t *err)
162 {
163 int i;
164 char *serv;
165
166 if (!handle)
167 printk(KERN_NOTICE);
168 else {
169 struct pcmcia_device *p_dev = handle_to_pdev(handle);
170 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
171 }
172
173 for (i = 0; i < ARRAY_SIZE(service_table); i++)
174 if (service_table[i].key == err->func)
175 break;
176 if (i < ARRAY_SIZE(service_table))
177 serv = service_table[i].msg;
178 else
179 serv = "Unknown service number";
180
181 for (i = 0; i < ARRAY_SIZE(error_table); i++)
182 if (error_table[i].key == err->retcode)
183 break;
184 if (i < ARRAY_SIZE(error_table))
185 printk("%s: %s\n", serv, error_table[i].msg);
186 else
187 printk("%s: Unknown error code %#x\n", serv, err->retcode);
188
189 return CS_SUCCESS;
190 } /* report_error */
191
192 /* end of code which was in cs.c before */
193
194 /*======================================================================*/
195
196 void cs_error(client_handle_t handle, int func, int ret)
197 {
198 error_info_t err = { func, ret };
199 pcmcia_report_error(handle, &err);
200 }
201 EXPORT_SYMBOL(cs_error);
202
203
204 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
205 {
206 struct pcmcia_device_id *did = p_drv->id_table;
207 unsigned int i;
208 u32 hash;
209
210 if (!p_drv->attach || !p_drv->event || !p_drv->detach)
211 printk(KERN_DEBUG "pcmcia: %s does misses a callback function",
212 p_drv->drv.name);
213
214 while (did && did->match_flags) {
215 for (i=0; i<4; i++) {
216 if (!did->prod_id[i])
217 continue;
218
219 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
220 if (hash == did->prod_id_hash[i])
221 continue;
222
223 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
224 "product string \"%s\": is 0x%x, should "
225 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
226 did->prod_id_hash[i], hash);
227 printk(KERN_DEBUG "pcmcia: see "
228 "Documentation/pcmcia/devicetable.txt for "
229 "details\n");
230 }
231 did++;
232 }
233
234 return;
235 }
236
237
238 #ifdef CONFIG_PCMCIA_LOAD_CIS
239
240 /**
241 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
242 * @dev - the pcmcia device which needs a CIS override
243 * @filename - requested filename in /lib/firmware/cis/
244 *
245 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
246 * the one provided by the card is broken. The firmware files reside in
247 * /lib/firmware/cis/ in userspace.
248 */
249 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
250 {
251 struct pcmcia_socket *s = dev->socket;
252 const struct firmware *fw;
253 char path[20];
254 int ret=-ENOMEM;
255 cisdump_t *cis;
256
257 if (!filename)
258 return -EINVAL;
259
260 ds_dbg(1, "trying to load firmware %s\n", filename);
261
262 if (strlen(filename) > 14)
263 return -EINVAL;
264
265 snprintf(path, 20, "%s", filename);
266
267 if (request_firmware(&fw, path, &dev->dev) == 0) {
268 if (fw->size >= CISTPL_MAX_CIS_SIZE)
269 goto release;
270
271 cis = kmalloc(sizeof(cisdump_t), GFP_KERNEL);
272 if (!cis)
273 goto release;
274
275 memset(cis, 0, sizeof(cisdump_t));
276
277 cis->Length = fw->size + 1;
278 memcpy(cis->Data, fw->data, fw->size);
279
280 if (!pcmcia_replace_cis(s, cis))
281 ret = 0;
282 }
283 release:
284 release_firmware(fw);
285
286 return (ret);
287 }
288
289 #else /* !CONFIG_PCMCIA_LOAD_CIS */
290
291 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
292 {
293 return -ENODEV;
294 }
295
296 #endif
297
298
299 /*======================================================================*/
300
301
302 /**
303 * pcmcia_register_driver - register a PCMCIA driver with the bus core
304 *
305 * Registers a PCMCIA driver with the PCMCIA bus core.
306 */
307 static int pcmcia_device_probe(struct device *dev);
308 static int pcmcia_device_remove(struct device * dev);
309
310 int pcmcia_register_driver(struct pcmcia_driver *driver)
311 {
312 if (!driver)
313 return -EINVAL;
314
315 pcmcia_check_driver(driver);
316
317 /* initialize common fields */
318 driver->drv.bus = &pcmcia_bus_type;
319 driver->drv.owner = driver->owner;
320 driver->drv.probe = pcmcia_device_probe;
321 driver->drv.remove = pcmcia_device_remove;
322
323 return driver_register(&driver->drv);
324 }
325 EXPORT_SYMBOL(pcmcia_register_driver);
326
327 /**
328 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
329 */
330 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
331 {
332 driver_unregister(&driver->drv);
333 }
334 EXPORT_SYMBOL(pcmcia_unregister_driver);
335
336
337 /* pcmcia_device handling */
338
339 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
340 {
341 struct device *tmp_dev;
342 tmp_dev = get_device(&p_dev->dev);
343 if (!tmp_dev)
344 return NULL;
345 return to_pcmcia_dev(tmp_dev);
346 }
347
348 void pcmcia_put_dev(struct pcmcia_device *p_dev)
349 {
350 if (p_dev)
351 put_device(&p_dev->dev);
352 }
353
354 static void pcmcia_release_dev(struct device *dev)
355 {
356 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
357 ds_dbg(1, "releasing dev %p\n", p_dev);
358 pcmcia_put_socket(p_dev->socket);
359 kfree(p_dev);
360 }
361
362
363 static int pcmcia_device_probe(struct device * dev)
364 {
365 struct pcmcia_device *p_dev;
366 struct pcmcia_driver *p_drv;
367 int ret = 0;
368
369 dev = get_device(dev);
370 if (!dev)
371 return -ENODEV;
372
373 p_dev = to_pcmcia_dev(dev);
374 p_drv = to_pcmcia_drv(dev->driver);
375
376 if (!try_module_get(p_drv->owner)) {
377 ret = -EINVAL;
378 goto put_dev;
379 }
380
381 if (p_drv->attach) {
382 p_dev->instance = p_drv->attach();
383 if ((!p_dev->instance) || (p_dev->state & CLIENT_UNBOUND)) {
384 printk(KERN_NOTICE "ds: unable to create instance "
385 "of '%s'!\n", p_drv->drv.name);
386 ret = -EINVAL;
387 }
388 }
389
390 if (ret)
391 module_put(p_drv->owner);
392 put_dev:
393 if ((ret) || !(p_drv->attach))
394 put_device(dev);
395 return (ret);
396 }
397
398
399 static int pcmcia_device_remove(struct device * dev)
400 {
401 struct pcmcia_device *p_dev;
402 struct pcmcia_driver *p_drv;
403
404 /* detach the "instance" */
405 p_dev = to_pcmcia_dev(dev);
406 p_drv = to_pcmcia_drv(dev->driver);
407
408 if (p_drv) {
409 if ((p_drv->detach) && (p_dev->instance)) {
410 p_drv->detach(p_dev->instance);
411 /* from pcmcia_probe_device */
412 put_device(&p_dev->dev);
413 }
414 module_put(p_drv->owner);
415 }
416
417 return 0;
418 }
419
420
421
422 /*
423 * pcmcia_device_query -- determine information about a pcmcia device
424 */
425 static int pcmcia_device_query(struct pcmcia_device *p_dev)
426 {
427 cistpl_manfid_t manf_id;
428 cistpl_funcid_t func_id;
429 cistpl_vers_1_t vers1;
430 unsigned int i;
431
432 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
433 CISTPL_MANFID, &manf_id)) {
434 p_dev->manf_id = manf_id.manf;
435 p_dev->card_id = manf_id.card;
436 p_dev->has_manf_id = 1;
437 p_dev->has_card_id = 1;
438 }
439
440 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
441 CISTPL_FUNCID, &func_id)) {
442 p_dev->func_id = func_id.func;
443 p_dev->has_func_id = 1;
444 } else {
445 /* rule of thumb: cards with no FUNCID, but with
446 * common memory device geometry information, are
447 * probably memory cards (from pcmcia-cs) */
448 cistpl_device_geo_t devgeo;
449 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
450 CISTPL_DEVICE_GEO, &devgeo)) {
451 ds_dbg(0, "mem device geometry probably means "
452 "FUNCID_MEMORY\n");
453 p_dev->func_id = CISTPL_FUNCID_MEMORY;
454 p_dev->has_func_id = 1;
455 }
456 }
457
458 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
459 &vers1)) {
460 for (i=0; i < vers1.ns; i++) {
461 char *tmp;
462 unsigned int length;
463
464 tmp = vers1.str + vers1.ofs[i];
465
466 length = strlen(tmp) + 1;
467 if ((length < 3) || (length > 255))
468 continue;
469
470 p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
471 GFP_KERNEL);
472 if (!p_dev->prod_id[i])
473 continue;
474
475 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
476 tmp, length);
477 }
478 }
479
480 return 0;
481 }
482
483
484 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
485 * Serializes pcmcia_device_add; will most likely be removed in future.
486 *
487 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
488 * won't work, this doesn't matter much at the moment: the driver core doesn't
489 * support it either.
490 */
491 static DECLARE_MUTEX(device_add_lock);
492
493 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
494 {
495 struct pcmcia_device *p_dev;
496 unsigned long flags;
497
498 s = pcmcia_get_socket(s);
499 if (!s)
500 return NULL;
501
502 down(&device_add_lock);
503
504 /* max of 2 devices per card */
505 if (s->device_count == 2)
506 goto err_put;
507
508 p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
509 if (!p_dev)
510 goto err_put;
511 memset(p_dev, 0, sizeof(struct pcmcia_device));
512
513 p_dev->socket = s;
514 p_dev->device_no = (s->device_count++);
515 p_dev->func = function;
516
517 p_dev->dev.bus = &pcmcia_bus_type;
518 p_dev->dev.parent = s->dev.dev;
519 p_dev->dev.release = pcmcia_release_dev;
520 sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
521
522 /* compat */
523 p_dev->state = CLIENT_UNBOUND;
524
525 /* Add to the list in pcmcia_bus_socket */
526 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
527 list_add_tail(&p_dev->socket_device_list, &s->devices_list);
528 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
529
530 pcmcia_device_query(p_dev);
531
532 if (device_register(&p_dev->dev)) {
533 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
534 list_del(&p_dev->socket_device_list);
535 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
536
537 goto err_free;
538 }
539
540 up(&device_add_lock);
541
542 return p_dev;
543
544 err_free:
545 kfree(p_dev);
546 s->device_count--;
547 err_put:
548 up(&device_add_lock);
549 pcmcia_put_socket(s);
550
551 return NULL;
552 }
553
554
555 static int pcmcia_card_add(struct pcmcia_socket *s)
556 {
557 cisinfo_t cisinfo;
558 cistpl_longlink_mfc_t mfc;
559 unsigned int no_funcs, i;
560 int ret = 0;
561
562 if (!(s->resource_setup_done))
563 return -EAGAIN; /* try again, but later... */
564
565 pcmcia_validate_mem(s);
566 ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
567 if (ret || !cisinfo.Chains) {
568 ds_dbg(0, "invalid CIS or invalid resources\n");
569 return -ENODEV;
570 }
571
572 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
573 no_funcs = mfc.nfn;
574 else
575 no_funcs = 1;
576
577 /* this doesn't handle multifunction devices on one pcmcia function
578 * yet. */
579 for (i=0; i < no_funcs; i++)
580 pcmcia_device_add(s, i);
581
582 return (ret);
583 }
584
585
586 static void pcmcia_delayed_add_pseudo_device(void *data)
587 {
588 struct pcmcia_socket *s = data;
589 pcmcia_device_add(s, 0);
590 s->pcmcia_state.device_add_pending = 0;
591 }
592
593 static inline void pcmcia_add_pseudo_device(struct pcmcia_socket *s)
594 {
595 if (!s->pcmcia_state.device_add_pending) {
596 schedule_work(&s->device_add);
597 s->pcmcia_state.device_add_pending = 1;
598 }
599 return;
600 }
601
602 static int pcmcia_requery(struct device *dev, void * _data)
603 {
604 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
605 if (!p_dev->dev.driver)
606 pcmcia_device_query(p_dev);
607
608 return 0;
609 }
610
611 static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
612 {
613 int no_devices=0;
614 unsigned long flags;
615
616 /* must be called with skt_sem held */
617 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
618 if (list_empty(&skt->devices_list))
619 no_devices=1;
620 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
621
622 /* if no devices were added for this socket yet because of
623 * missing resource information or other trouble, we need to
624 * do this now. */
625 if (no_devices) {
626 int ret = pcmcia_card_add(skt);
627 if (ret)
628 return;
629 }
630
631 /* some device information might have changed because of a CIS
632 * update or because we can finally read it correctly... so
633 * determine it again, overwriting old values if necessary. */
634 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
635
636 /* we re-scan all devices, not just the ones connected to this
637 * socket. This does not matter, though. */
638 bus_rescan_devices(&pcmcia_bus_type);
639 }
640
641 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
642 struct pcmcia_device_id *did)
643 {
644 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
645 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
646 return 0;
647 }
648
649 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
650 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
651 return 0;
652 }
653
654 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
655 if (dev->func != did->function)
656 return 0;
657 }
658
659 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
660 if (!dev->prod_id[0])
661 return 0;
662 if (strcmp(did->prod_id[0], dev->prod_id[0]))
663 return 0;
664 }
665
666 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
667 if (!dev->prod_id[1])
668 return 0;
669 if (strcmp(did->prod_id[1], dev->prod_id[1]))
670 return 0;
671 }
672
673 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
674 if (!dev->prod_id[2])
675 return 0;
676 if (strcmp(did->prod_id[2], dev->prod_id[2]))
677 return 0;
678 }
679
680 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
681 if (!dev->prod_id[3])
682 return 0;
683 if (strcmp(did->prod_id[3], dev->prod_id[3]))
684 return 0;
685 }
686
687 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
688 /* handle pseudo multifunction devices:
689 * there are at most two pseudo multifunction devices.
690 * if we're matching against the first, schedule a
691 * call which will then check whether there are two
692 * pseudo devices, and if not, add the second one.
693 */
694 if (dev->device_no == 0)
695 pcmcia_add_pseudo_device(dev->socket);
696
697 if (dev->device_no != did->device_no)
698 return 0;
699 }
700
701 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
702 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
703 return 0;
704
705 /* if this is a pseudo-multi-function device,
706 * we need explicit matches */
707 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
708 return 0;
709 if (dev->device_no)
710 return 0;
711
712 /* also, FUNC_ID matching needs to be activated by userspace
713 * after it has re-checked that there is no possible module
714 * with a prod_id/manf_id/card_id match.
715 */
716 if (!dev->allow_func_id_match)
717 return 0;
718 }
719
720 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
721 if (!dev->socket->fake_cis)
722 pcmcia_load_firmware(dev, did->cisfile);
723
724 if (!dev->socket->fake_cis)
725 return 0;
726 }
727
728 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
729 int i;
730 for (i=0; i<4; i++)
731 if (dev->prod_id[i])
732 return 0;
733 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
734 return 0;
735 }
736
737 dev->dev.driver_data = (void *) did;
738
739 return 1;
740 }
741
742
743 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
744 struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
745 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
746 struct pcmcia_device_id *did = p_drv->id_table;
747
748 /* matching by cardmgr */
749 if (p_dev->cardmgr == p_drv)
750 return 1;
751
752 while (did && did->match_flags) {
753 if (pcmcia_devmatch(p_dev, did))
754 return 1;
755 did++;
756 }
757
758 return 0;
759 }
760
761 #ifdef CONFIG_HOTPLUG
762
763 static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
764 char *buffer, int buffer_size)
765 {
766 struct pcmcia_device *p_dev;
767 int i, length = 0;
768 u32 hash[4] = { 0, 0, 0, 0};
769
770 if (!dev)
771 return -ENODEV;
772
773 p_dev = to_pcmcia_dev(dev);
774
775 /* calculate hashes */
776 for (i=0; i<4; i++) {
777 if (!p_dev->prod_id[i])
778 continue;
779 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
780 }
781
782 i = 0;
783
784 if (add_hotplug_env_var(envp, num_envp, &i,
785 buffer, buffer_size, &length,
786 "SOCKET_NO=%u",
787 p_dev->socket->sock))
788 return -ENOMEM;
789
790 if (add_hotplug_env_var(envp, num_envp, &i,
791 buffer, buffer_size, &length,
792 "DEVICE_NO=%02X",
793 p_dev->device_no))
794 return -ENOMEM;
795
796 if (add_hotplug_env_var(envp, num_envp, &i,
797 buffer, buffer_size, &length,
798 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
799 "pa%08Xpb%08Xpc%08Xpd%08X",
800 p_dev->has_manf_id ? p_dev->manf_id : 0,
801 p_dev->has_card_id ? p_dev->card_id : 0,
802 p_dev->has_func_id ? p_dev->func_id : 0,
803 p_dev->func,
804 p_dev->device_no,
805 hash[0],
806 hash[1],
807 hash[2],
808 hash[3]))
809 return -ENOMEM;
810
811 envp[i] = NULL;
812
813 return 0;
814 }
815
816 #else
817
818 static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
819 char *buffer, int buffer_size)
820 {
821 return -ENODEV;
822 }
823
824 #endif
825
826 /************************ per-device sysfs output ***************************/
827
828 #define pcmcia_device_attr(field, test, format) \
829 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
830 { \
831 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
832 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
833 }
834
835 #define pcmcia_device_stringattr(name, field) \
836 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
837 { \
838 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
839 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
840 }
841
842 pcmcia_device_attr(func, socket, "0x%02x\n");
843 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
844 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
845 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
846 pcmcia_device_stringattr(prod_id1, prod_id[0]);
847 pcmcia_device_stringattr(prod_id2, prod_id[1]);
848 pcmcia_device_stringattr(prod_id3, prod_id[2]);
849 pcmcia_device_stringattr(prod_id4, prod_id[3]);
850
851 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
852 {
853 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
854 int i;
855 u32 hash[4] = { 0, 0, 0, 0};
856
857 /* calculate hashes */
858 for (i=0; i<4; i++) {
859 if (!p_dev->prod_id[i])
860 continue;
861 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i]));
862 }
863 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
864 "pa%08Xpb%08Xpc%08Xpd%08X\n",
865 p_dev->has_manf_id ? p_dev->manf_id : 0,
866 p_dev->has_card_id ? p_dev->card_id : 0,
867 p_dev->has_func_id ? p_dev->func_id : 0,
868 p_dev->func, p_dev->device_no,
869 hash[0], hash[1], hash[2], hash[3]);
870 }
871
872 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
873 struct device_attribute *attr, const char *buf, size_t count)
874 {
875 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
876 if (!count)
877 return -EINVAL;
878
879 down(&p_dev->socket->skt_sem);
880 p_dev->allow_func_id_match = 1;
881 up(&p_dev->socket->skt_sem);
882
883 bus_rescan_devices(&pcmcia_bus_type);
884
885 return count;
886 }
887
888 static struct device_attribute pcmcia_dev_attrs[] = {
889 __ATTR(function, 0444, func_show, NULL),
890 __ATTR_RO(func_id),
891 __ATTR_RO(manf_id),
892 __ATTR_RO(card_id),
893 __ATTR_RO(prod_id1),
894 __ATTR_RO(prod_id2),
895 __ATTR_RO(prod_id3),
896 __ATTR_RO(prod_id4),
897 __ATTR_RO(modalias),
898 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
899 __ATTR_NULL,
900 };
901
902
903 /*======================================================================
904
905 The card status event handler.
906
907 ======================================================================*/
908
909 struct send_event_data {
910 struct pcmcia_socket *skt;
911 event_t event;
912 int priority;
913 };
914
915 static int send_event_callback(struct device *dev, void * _data)
916 {
917 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
918 struct pcmcia_driver *p_drv;
919 struct send_event_data *data = _data;
920
921 /* we get called for all sockets, but may only pass the event
922 * for drivers _on the affected socket_ */
923 if (p_dev->socket != data->skt)
924 return 0;
925
926 p_drv = to_pcmcia_drv(p_dev->dev.driver);
927 if (!p_drv)
928 return 0;
929
930 if (p_dev->state & (CLIENT_UNBOUND|CLIENT_STALE))
931 return 0;
932
933 if (p_drv->event)
934 return p_drv->event(data->event, data->priority,
935 &p_dev->event_callback_args);
936
937 return 0;
938 }
939
940 static int send_event(struct pcmcia_socket *s, event_t event, int priority)
941 {
942 struct send_event_data private;
943
944 private.skt = s;
945 private.event = event;
946 private.priority = priority;
947
948 return bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback);
949 } /* send_event */
950
951
952 /* Normally, the event is passed to individual drivers after
953 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
954 * is inversed to maintain historic compatibility.
955 */
956
957 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
958 {
959 struct pcmcia_socket *s = pcmcia_get_socket(skt);
960 int ret = 0;
961
962 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
963 event, priority, skt);
964
965 switch (event) {
966
967 case CS_EVENT_CARD_REMOVAL:
968 s->pcmcia_state.present = 0;
969 send_event(skt, event, priority);
970 unbind_request(skt);
971 handle_event(skt, event);
972 break;
973
974 case CS_EVENT_CARD_INSERTION:
975 s->pcmcia_state.present = 1;
976 pcmcia_card_add(skt);
977 handle_event(skt, event);
978 break;
979
980 case CS_EVENT_EJECTION_REQUEST:
981 ret = send_event(skt, event, priority);
982 break;
983
984 default:
985 handle_event(skt, event);
986 send_event(skt, event, priority);
987 break;
988 }
989
990 pcmcia_put_socket(s);
991
992 return 0;
993 } /* ds_event */
994
995
996
997 int pcmcia_register_client(client_handle_t *handle, client_reg_t *req)
998 {
999 struct pcmcia_device *client = NULL;
1000 struct pcmcia_socket *s = NULL;
1001 struct pcmcia_device *p_dev = NULL;
1002 struct pcmcia_driver *p_drv = NULL;
1003
1004 /* Look for unbound client with matching dev_info */
1005 down_read(&pcmcia_socket_list_rwsem);
1006 list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
1007 unsigned long flags;
1008
1009 if (s->state & SOCKET_CARDBUS)
1010 continue;
1011
1012 s = pcmcia_get_socket(s);
1013 if (!s)
1014 continue;
1015 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1016 list_for_each_entry(p_dev, &s->devices_list, socket_device_list) {
1017 p_dev = pcmcia_get_dev(p_dev);
1018 if (!p_dev)
1019 continue;
1020 if (!(p_dev->state & CLIENT_UNBOUND) ||
1021 (!p_dev->dev.driver)) {
1022 pcmcia_put_dev(p_dev);
1023 continue;
1024 }
1025 p_drv = to_pcmcia_drv(p_dev->dev.driver);
1026 if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) {
1027 client = p_dev;
1028 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1029 goto found;
1030 }
1031 pcmcia_put_dev(p_dev);
1032 }
1033 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1034 pcmcia_put_socket(s);
1035 }
1036 found:
1037 up_read(&pcmcia_socket_list_rwsem);
1038 if (!p_dev || !client)
1039 return -ENODEV;
1040
1041 pcmcia_put_socket(s); /* safe, as we already hold a reference from bind_device */
1042
1043 *handle = p_dev;
1044 p_dev->state &= ~CLIENT_UNBOUND;
1045 p_dev->event_callback_args = req->event_callback_args;
1046 p_dev->event_callback_args.client_handle = p_dev;
1047
1048
1049 if (s->state & SOCKET_CARDBUS)
1050 client->state |= CLIENT_CARDBUS;
1051
1052 if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0)) {
1053 cistpl_longlink_mfc_t mfc;
1054 if (pccard_read_tuple(s, client->func, CISTPL_LONGLINK_MFC, &mfc)
1055 == CS_SUCCESS)
1056 s->functions = mfc.nfn;
1057 else
1058 s->functions = 1;
1059 s->config = kmalloc(sizeof(config_t) * s->functions,
1060 GFP_KERNEL);
1061 if (!s->config)
1062 goto out_no_resource;
1063 memset(s->config, 0, sizeof(config_t) * s->functions);
1064 }
1065
1066 ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
1067 client, p_dev->dev.bus_id);
1068
1069 if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
1070 if (p_drv->event)
1071 p_drv->event(CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW,
1072 &p_dev->event_callback_args);
1073
1074 }
1075
1076 return CS_SUCCESS;
1077
1078 out_no_resource:
1079 pcmcia_put_dev(p_dev);
1080 return CS_OUT_OF_RESOURCE;
1081 } /* register_client */
1082 EXPORT_SYMBOL(pcmcia_register_client);
1083
1084
1085 /* unbind _all_ devices attached to a given pcmcia_bus_socket. The
1086 * drivers have been called with EVENT_CARD_REMOVAL before.
1087 */
1088 static int unbind_request(struct pcmcia_socket *s)
1089 {
1090 struct pcmcia_device *p_dev;
1091 unsigned long flags;
1092
1093 ds_dbg(2, "unbind_request(%d)\n", s->sock);
1094
1095 s->device_count = 0;
1096
1097 for (;;) {
1098 /* unregister all pcmcia_devices registered with this socket*/
1099 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1100 if (list_empty(&s->devices_list)) {
1101 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1102 return 0;
1103 }
1104 p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list);
1105 list_del(&p_dev->socket_device_list);
1106 p_dev->state |= CLIENT_STALE;
1107 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1108
1109 device_unregister(&p_dev->dev);
1110 }
1111
1112 return 0;
1113 } /* unbind_request */
1114
1115 int pcmcia_deregister_client(client_handle_t handle)
1116 {
1117 struct pcmcia_socket *s;
1118 int i;
1119 struct pcmcia_device *p_dev = handle_to_pdev(handle);
1120
1121 s = SOCKET(handle);
1122 ds_dbg(1, "deregister_client(%p)\n", handle);
1123
1124 if (handle->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
1125 goto warn_out;
1126 for (i = 0; i < MAX_WIN; i++)
1127 if (handle->state & CLIENT_WIN_REQ(i))
1128 goto warn_out;
1129
1130 if (handle->state & CLIENT_STALE) {
1131 handle->state &= ~CLIENT_STALE;
1132 pcmcia_put_dev(p_dev);
1133 } else {
1134 handle->state = CLIENT_UNBOUND;
1135 }
1136
1137 return CS_SUCCESS;
1138 warn_out:
1139 printk(KERN_WARNING "ds: deregister_client was called too early.\n");
1140 return CS_IN_USE;
1141 } /* deregister_client */
1142 EXPORT_SYMBOL(pcmcia_deregister_client);
1143
1144 static struct pcmcia_callback pcmcia_bus_callback = {
1145 .owner = THIS_MODULE,
1146 .event = ds_event,
1147 .requery = pcmcia_bus_rescan,
1148 };
1149
1150 static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev)
1151 {
1152 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1153 int ret;
1154
1155 socket = pcmcia_get_socket(socket);
1156 if (!socket) {
1157 printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
1158 return -ENODEV;
1159 }
1160
1161 /*
1162 * Ugly. But we want to wait for the socket threads to have started up.
1163 * We really should let the drivers themselves drive some of this..
1164 */
1165 msleep(250);
1166
1167 #ifdef CONFIG_PCMCIA_IOCTL
1168 init_waitqueue_head(&socket->queue);
1169 #endif
1170 INIT_LIST_HEAD(&socket->devices_list);
1171 INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket);
1172 memset(&socket->pcmcia_state, 0, sizeof(u8));
1173 socket->device_count = 0;
1174
1175 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1176 if (ret) {
1177 printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
1178 pcmcia_put_socket(socket);
1179 return (ret);
1180 }
1181
1182 return 0;
1183 }
1184
1185 static void pcmcia_bus_remove_socket(struct class_device *class_dev)
1186 {
1187 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1188
1189 if (!socket)
1190 return;
1191
1192 socket->pcmcia_state.dead = 1;
1193 pccard_register_pcmcia(socket, NULL);
1194
1195 pcmcia_put_socket(socket);
1196
1197 return;
1198 }
1199
1200
1201 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1202 static struct class_interface pcmcia_bus_interface = {
1203 .class = &pcmcia_socket_class,
1204 .add = &pcmcia_bus_add_socket,
1205 .remove = &pcmcia_bus_remove_socket,
1206 };
1207
1208
1209 struct bus_type pcmcia_bus_type = {
1210 .name = "pcmcia",
1211 .hotplug = pcmcia_bus_hotplug,
1212 .match = pcmcia_bus_match,
1213 .dev_attrs = pcmcia_dev_attrs,
1214 };
1215
1216
1217 static int __init init_pcmcia_bus(void)
1218 {
1219 spin_lock_init(&pcmcia_dev_list_lock);
1220
1221 bus_register(&pcmcia_bus_type);
1222 class_interface_register(&pcmcia_bus_interface);
1223
1224 pcmcia_setup_ioctl();
1225
1226 return 0;
1227 }
1228 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1229 * pcmcia_socket_class is already registered */
1230
1231
1232 static void __exit exit_pcmcia_bus(void)
1233 {
1234 pcmcia_cleanup_ioctl();
1235
1236 class_interface_unregister(&pcmcia_bus_interface);
1237
1238 bus_unregister(&pcmcia_bus_type);
1239 }
1240 module_exit(exit_pcmcia_bus);
1241
1242
1243 MODULE_ALIAS("ds");
Linus' kernel tree