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[PATCH] arch/sparc64/Kconfig: fix HUGETLB_PAGE_SIZE_64K dependencies
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / pcmcia / ds.c
blob7f8219f3fd9ef75b8cf10a223e7f1478fdb4cf2e
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(struct pcmcia_device *p_dev, error_info_t *err)
162 {
163 int i;
164 char *serv;
165
166 if (!p_dev)
167 printk(KERN_NOTICE);
168 else
169 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
170
171 for (i = 0; i < ARRAY_SIZE(service_table); i++)
172 if (service_table[i].key == err->func)
173 break;
174 if (i < ARRAY_SIZE(service_table))
175 serv = service_table[i].msg;
176 else
177 serv = "Unknown service number";
178
179 for (i = 0; i < ARRAY_SIZE(error_table); i++)
180 if (error_table[i].key == err->retcode)
181 break;
182 if (i < ARRAY_SIZE(error_table))
183 printk("%s: %s\n", serv, error_table[i].msg);
184 else
185 printk("%s: Unknown error code %#x\n", serv, err->retcode);
186
187 return CS_SUCCESS;
188 } /* report_error */
189
190 /* end of code which was in cs.c before */
191
192 /*======================================================================*/
193
194 void cs_error(struct pcmcia_device *p_dev, int func, int ret)
195 {
196 error_info_t err = { func, ret };
197 pcmcia_report_error(p_dev, &err);
198 }
199 EXPORT_SYMBOL(cs_error);
200
201
202 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
203 {
204 struct pcmcia_device_id *did = p_drv->id_table;
205 unsigned int i;
206 u32 hash;
207
208 if (!p_drv->attach || !p_drv->event || !p_drv->detach)
209 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
210 "function\n", p_drv->drv.name);
211
212 while (did && did->match_flags) {
213 for (i=0; i<4; i++) {
214 if (!did->prod_id[i])
215 continue;
216
217 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
218 if (hash == did->prod_id_hash[i])
219 continue;
220
221 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
222 "product string \"%s\": is 0x%x, should "
223 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
224 did->prod_id_hash[i], hash);
225 printk(KERN_DEBUG "pcmcia: see "
226 "Documentation/pcmcia/devicetable.txt for "
227 "details\n");
228 }
229 did++;
230 }
231
232 return;
233 }
234
235
236 #ifdef CONFIG_PCMCIA_LOAD_CIS
237
238 /**
239 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
240 * @dev - the pcmcia device which needs a CIS override
241 * @filename - requested filename in /lib/firmware/cis/
242 *
243 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
244 * the one provided by the card is broken. The firmware files reside in
245 * /lib/firmware/cis/ in userspace.
246 */
247 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
248 {
249 struct pcmcia_socket *s = dev->socket;
250 const struct firmware *fw;
251 char path[20];
252 int ret=-ENOMEM;
253 cisdump_t *cis;
254
255 if (!filename)
256 return -EINVAL;
257
258 ds_dbg(1, "trying to load firmware %s\n", filename);
259
260 if (strlen(filename) > 14)
261 return -EINVAL;
262
263 snprintf(path, 20, "%s", filename);
264
265 if (request_firmware(&fw, path, &dev->dev) == 0) {
266 if (fw->size >= CISTPL_MAX_CIS_SIZE)
267 goto release;
268
269 cis = kmalloc(sizeof(cisdump_t), GFP_KERNEL);
270 if (!cis)
271 goto release;
272
273 memset(cis, 0, sizeof(cisdump_t));
274
275 cis->Length = fw->size + 1;
276 memcpy(cis->Data, fw->data, fw->size);
277
278 if (!pcmcia_replace_cis(s, cis))
279 ret = 0;
280 }
281 release:
282 release_firmware(fw);
283
284 return (ret);
285 }
286
287 #else /* !CONFIG_PCMCIA_LOAD_CIS */
288
289 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
290 {
291 return -ENODEV;
292 }
293
294 #endif
295
296
297 /*======================================================================*/
298
299
300 /**
301 * pcmcia_register_driver - register a PCMCIA driver with the bus core
302 *
303 * Registers a PCMCIA driver with the PCMCIA bus core.
304 */
305 static int pcmcia_device_probe(struct device *dev);
306 static int pcmcia_device_remove(struct device * dev);
307
308 int pcmcia_register_driver(struct pcmcia_driver *driver)
309 {
310 if (!driver)
311 return -EINVAL;
312
313 pcmcia_check_driver(driver);
314
315 /* initialize common fields */
316 driver->drv.bus = &pcmcia_bus_type;
317 driver->drv.owner = driver->owner;
318 driver->drv.probe = pcmcia_device_probe;
319 driver->drv.remove = pcmcia_device_remove;
320
321 return driver_register(&driver->drv);
322 }
323 EXPORT_SYMBOL(pcmcia_register_driver);
324
325 /**
326 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
327 */
328 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
329 {
330 driver_unregister(&driver->drv);
331 }
332 EXPORT_SYMBOL(pcmcia_unregister_driver);
333
334
335 /* pcmcia_device handling */
336
337 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
338 {
339 struct device *tmp_dev;
340 tmp_dev = get_device(&p_dev->dev);
341 if (!tmp_dev)
342 return NULL;
343 return to_pcmcia_dev(tmp_dev);
344 }
345
346 void pcmcia_put_dev(struct pcmcia_device *p_dev)
347 {
348 if (p_dev)
349 put_device(&p_dev->dev);
350 }
351
352 static void pcmcia_release_dev(struct device *dev)
353 {
354 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
355 ds_dbg(1, "releasing dev %p\n", p_dev);
356 pcmcia_put_socket(p_dev->socket);
357 kfree(p_dev->devname);
358 kfree(p_dev);
359 }
360
361
362 static int pcmcia_device_probe(struct device * dev)
363 {
364 struct pcmcia_device *p_dev;
365 struct pcmcia_driver *p_drv;
366 int ret = 0;
367
368 dev = get_device(dev);
369 if (!dev)
370 return -ENODEV;
371
372 p_dev = to_pcmcia_dev(dev);
373 p_drv = to_pcmcia_drv(dev->driver);
374
375 if (!try_module_get(p_drv->owner)) {
376 ret = -EINVAL;
377 goto put_dev;
378 }
379
380 if (p_drv->attach) {
381 p_dev->instance = p_drv->attach();
382 if ((!p_dev->instance) || (p_dev->state & CLIENT_UNBOUND)) {
383 printk(KERN_NOTICE "ds: unable to create instance "
384 "of '%s'!\n", p_drv->drv.name);
385 ret = -EINVAL;
386 }
387 }
388
389 if (ret)
390 module_put(p_drv->owner);
391 put_dev:
392 if ((ret) || !(p_drv->attach))
393 put_device(dev);
394 return (ret);
395 }
396
397
398 static int pcmcia_device_remove(struct device * dev)
399 {
400 struct pcmcia_device *p_dev;
401 struct pcmcia_driver *p_drv;
402
403 /* detach the "instance" */
404 p_dev = to_pcmcia_dev(dev);
405 p_drv = to_pcmcia_drv(dev->driver);
406
407 if (p_drv) {
408 if ((p_drv->detach) && (p_dev->instance)) {
409 p_drv->detach(p_dev->instance);
410 /* from pcmcia_probe_device */
411 put_device(&p_dev->dev);
412 }
413 module_put(p_drv->owner);
414 }
415
416 return 0;
417 }
418
419
420
421 /*
422 * pcmcia_device_query -- determine information about a pcmcia device
423 */
424 static int pcmcia_device_query(struct pcmcia_device *p_dev)
425 {
426 cistpl_manfid_t manf_id;
427 cistpl_funcid_t func_id;
428 cistpl_vers_1_t *vers1;
429 unsigned int i;
430
431 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
432 if (!vers1)
433 return -ENOMEM;
434
435 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
436 CISTPL_MANFID, &manf_id)) {
437 p_dev->manf_id = manf_id.manf;
438 p_dev->card_id = manf_id.card;
439 p_dev->has_manf_id = 1;
440 p_dev->has_card_id = 1;
441 }
442
443 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
444 CISTPL_FUNCID, &func_id)) {
445 p_dev->func_id = func_id.func;
446 p_dev->has_func_id = 1;
447 } else {
448 /* rule of thumb: cards with no FUNCID, but with
449 * common memory device geometry information, are
450 * probably memory cards (from pcmcia-cs) */
451 cistpl_device_geo_t *devgeo;
452
453 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
454 if (!devgeo) {
455 kfree(vers1);
456 return -ENOMEM;
457 }
458 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
459 CISTPL_DEVICE_GEO, devgeo)) {
460 ds_dbg(0, "mem device geometry probably means "
461 "FUNCID_MEMORY\n");
462 p_dev->func_id = CISTPL_FUNCID_MEMORY;
463 p_dev->has_func_id = 1;
464 }
465 kfree(devgeo);
466 }
467
468 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
469 vers1)) {
470 for (i=0; i < vers1->ns; i++) {
471 char *tmp;
472 unsigned int length;
473
474 tmp = vers1->str + vers1->ofs[i];
475
476 length = strlen(tmp) + 1;
477 if ((length < 3) || (length > 255))
478 continue;
479
480 p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
481 GFP_KERNEL);
482 if (!p_dev->prod_id[i])
483 continue;
484
485 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
486 tmp, length);
487 }
488 }
489
490 kfree(vers1);
491 return 0;
492 }
493
494
495 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
496 * Serializes pcmcia_device_add; will most likely be removed in future.
497 *
498 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
499 * won't work, this doesn't matter much at the moment: the driver core doesn't
500 * support it either.
501 */
502 static DECLARE_MUTEX(device_add_lock);
503
504 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
505 {
506 struct pcmcia_device *p_dev;
507 unsigned long flags;
508 int bus_id_len;
509
510 s = pcmcia_get_socket(s);
511 if (!s)
512 return NULL;
513
514 down(&device_add_lock);
515
516 /* max of 2 devices per card */
517 if (s->device_count == 2)
518 goto err_put;
519
520 p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
521 if (!p_dev)
522 goto err_put;
523 memset(p_dev, 0, sizeof(struct pcmcia_device));
524
525 p_dev->socket = s;
526 p_dev->device_no = (s->device_count++);
527 p_dev->func = function;
528
529 p_dev->dev.bus = &pcmcia_bus_type;
530 p_dev->dev.parent = s->dev.dev;
531 p_dev->dev.release = pcmcia_release_dev;
532 bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
533
534 p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL);
535 if (!p_dev->devname)
536 goto err_free;
537 sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id);
538
539 /* compat */
540 p_dev->state = CLIENT_UNBOUND;
541
542 /* Add to the list in pcmcia_bus_socket */
543 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
544 list_add_tail(&p_dev->socket_device_list, &s->devices_list);
545 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
546
547 printk(KERN_NOTICE "pcmcia: registering new device %s\n",
548 p_dev->devname);
549
550 pcmcia_device_query(p_dev);
551
552 if (device_register(&p_dev->dev)) {
553 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
554 list_del(&p_dev->socket_device_list);
555 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
556
557 goto err_free;
558 }
559
560 up(&device_add_lock);
561
562 return p_dev;
563
564 err_free:
565 kfree(p_dev->devname);
566 kfree(p_dev);
567 s->device_count--;
568 err_put:
569 up(&device_add_lock);
570 pcmcia_put_socket(s);
571
572 return NULL;
573 }
574
575
576 static int pcmcia_card_add(struct pcmcia_socket *s)
577 {
578 cisinfo_t cisinfo;
579 cistpl_longlink_mfc_t mfc;
580 unsigned int no_funcs, i;
581 int ret = 0;
582
583 if (!(s->resource_setup_done))
584 return -EAGAIN; /* try again, but later... */
585
586 pcmcia_validate_mem(s);
587 ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
588 if (ret || !cisinfo.Chains) {
589 ds_dbg(0, "invalid CIS or invalid resources\n");
590 return -ENODEV;
591 }
592
593 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
594 no_funcs = mfc.nfn;
595 else
596 no_funcs = 1;
597
598 for (i=0; i < no_funcs; i++)
599 pcmcia_device_add(s, i);
600
601 return (ret);
602 }
603
604
605 static void pcmcia_delayed_add_pseudo_device(void *data)
606 {
607 struct pcmcia_socket *s = data;
608 pcmcia_device_add(s, 0);
609 s->pcmcia_state.device_add_pending = 0;
610 }
611
612 static inline void pcmcia_add_pseudo_device(struct pcmcia_socket *s)
613 {
614 if (!s->pcmcia_state.device_add_pending) {
615 s->pcmcia_state.device_add_pending = 1;
616 schedule_work(&s->device_add);
617 }
618 return;
619 }
620
621 static int pcmcia_requery(struct device *dev, void * _data)
622 {
623 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
624 if (!p_dev->dev.driver)
625 pcmcia_device_query(p_dev);
626
627 return 0;
628 }
629
630 static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
631 {
632 int no_devices=0;
633 unsigned long flags;
634
635 /* must be called with skt_sem held */
636 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
637 if (list_empty(&skt->devices_list))
638 no_devices=1;
639 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
640
641 /* if no devices were added for this socket yet because of
642 * missing resource information or other trouble, we need to
643 * do this now. */
644 if (no_devices) {
645 int ret = pcmcia_card_add(skt);
646 if (ret)
647 return;
648 }
649
650 /* some device information might have changed because of a CIS
651 * update or because we can finally read it correctly... so
652 * determine it again, overwriting old values if necessary. */
653 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
654
655 /* we re-scan all devices, not just the ones connected to this
656 * socket. This does not matter, though. */
657 bus_rescan_devices(&pcmcia_bus_type);
658 }
659
660 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
661 struct pcmcia_device_id *did)
662 {
663 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
664 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
665 return 0;
666 }
667
668 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
669 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
670 return 0;
671 }
672
673 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
674 if (dev->func != did->function)
675 return 0;
676 }
677
678 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
679 if (!dev->prod_id[0])
680 return 0;
681 if (strcmp(did->prod_id[0], dev->prod_id[0]))
682 return 0;
683 }
684
685 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
686 if (!dev->prod_id[1])
687 return 0;
688 if (strcmp(did->prod_id[1], dev->prod_id[1]))
689 return 0;
690 }
691
692 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
693 if (!dev->prod_id[2])
694 return 0;
695 if (strcmp(did->prod_id[2], dev->prod_id[2]))
696 return 0;
697 }
698
699 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
700 if (!dev->prod_id[3])
701 return 0;
702 if (strcmp(did->prod_id[3], dev->prod_id[3]))
703 return 0;
704 }
705
706 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
707 /* handle pseudo multifunction devices:
708 * there are at most two pseudo multifunction devices.
709 * if we're matching against the first, schedule a
710 * call which will then check whether there are two
711 * pseudo devices, and if not, add the second one.
712 */
713 if (dev->device_no == 0)
714 pcmcia_add_pseudo_device(dev->socket);
715
716 if (dev->device_no != did->device_no)
717 return 0;
718 }
719
720 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
721 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
722 return 0;
723
724 /* if this is a pseudo-multi-function device,
725 * we need explicit matches */
726 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
727 return 0;
728 if (dev->device_no)
729 return 0;
730
731 /* also, FUNC_ID matching needs to be activated by userspace
732 * after it has re-checked that there is no possible module
733 * with a prod_id/manf_id/card_id match.
734 */
735 if (!dev->allow_func_id_match)
736 return 0;
737 }
738
739 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
740 if (!dev->socket->fake_cis)
741 pcmcia_load_firmware(dev, did->cisfile);
742
743 if (!dev->socket->fake_cis)
744 return 0;
745 }
746
747 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
748 int i;
749 for (i=0; i<4; i++)
750 if (dev->prod_id[i])
751 return 0;
752 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
753 return 0;
754 }
755
756 dev->dev.driver_data = (void *) did;
757
758 return 1;
759 }
760
761
762 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
763 struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
764 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
765 struct pcmcia_device_id *did = p_drv->id_table;
766
767 /* matching by cardmgr */
768 if (p_dev->cardmgr == p_drv)
769 return 1;
770
771 while (did && did->match_flags) {
772 if (pcmcia_devmatch(p_dev, did))
773 return 1;
774 did++;
775 }
776
777 return 0;
778 }
779
780 #ifdef CONFIG_HOTPLUG
781
782 static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
783 char *buffer, int buffer_size)
784 {
785 struct pcmcia_device *p_dev;
786 int i, length = 0;
787 u32 hash[4] = { 0, 0, 0, 0};
788
789 if (!dev)
790 return -ENODEV;
791
792 p_dev = to_pcmcia_dev(dev);
793
794 /* calculate hashes */
795 for (i=0; i<4; i++) {
796 if (!p_dev->prod_id[i])
797 continue;
798 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
799 }
800
801 i = 0;
802
803 if (add_hotplug_env_var(envp, num_envp, &i,
804 buffer, buffer_size, &length,
805 "SOCKET_NO=%u",
806 p_dev->socket->sock))
807 return -ENOMEM;
808
809 if (add_hotplug_env_var(envp, num_envp, &i,
810 buffer, buffer_size, &length,
811 "DEVICE_NO=%02X",
812 p_dev->device_no))
813 return -ENOMEM;
814
815 if (add_hotplug_env_var(envp, num_envp, &i,
816 buffer, buffer_size, &length,
817 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
818 "pa%08Xpb%08Xpc%08Xpd%08X",
819 p_dev->has_manf_id ? p_dev->manf_id : 0,
820 p_dev->has_card_id ? p_dev->card_id : 0,
821 p_dev->has_func_id ? p_dev->func_id : 0,
822 p_dev->func,
823 p_dev->device_no,
824 hash[0],
825 hash[1],
826 hash[2],
827 hash[3]))
828 return -ENOMEM;
829
830 envp[i] = NULL;
831
832 return 0;
833 }
834
835 #else
836
837 static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
838 char *buffer, int buffer_size)
839 {
840 return -ENODEV;
841 }
842
843 #endif
844
845 /************************ per-device sysfs output ***************************/
846
847 #define pcmcia_device_attr(field, test, format) \
848 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
849 { \
850 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
851 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
852 }
853
854 #define pcmcia_device_stringattr(name, field) \
855 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
856 { \
857 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
858 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
859 }
860
861 pcmcia_device_attr(func, socket, "0x%02x\n");
862 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
863 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
864 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
865 pcmcia_device_stringattr(prod_id1, prod_id[0]);
866 pcmcia_device_stringattr(prod_id2, prod_id[1]);
867 pcmcia_device_stringattr(prod_id3, prod_id[2]);
868 pcmcia_device_stringattr(prod_id4, prod_id[3]);
869
870 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
871 {
872 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
873 int i;
874 u32 hash[4] = { 0, 0, 0, 0};
875
876 /* calculate hashes */
877 for (i=0; i<4; i++) {
878 if (!p_dev->prod_id[i])
879 continue;
880 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i]));
881 }
882 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
883 "pa%08Xpb%08Xpc%08Xpd%08X\n",
884 p_dev->has_manf_id ? p_dev->manf_id : 0,
885 p_dev->has_card_id ? p_dev->card_id : 0,
886 p_dev->has_func_id ? p_dev->func_id : 0,
887 p_dev->func, p_dev->device_no,
888 hash[0], hash[1], hash[2], hash[3]);
889 }
890
891 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
892 struct device_attribute *attr, const char *buf, size_t count)
893 {
894 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
895 if (!count)
896 return -EINVAL;
897
898 down(&p_dev->socket->skt_sem);
899 p_dev->allow_func_id_match = 1;
900 up(&p_dev->socket->skt_sem);
901
902 bus_rescan_devices(&pcmcia_bus_type);
903
904 return count;
905 }
906
907 static struct device_attribute pcmcia_dev_attrs[] = {
908 __ATTR(function, 0444, func_show, NULL),
909 __ATTR_RO(func_id),
910 __ATTR_RO(manf_id),
911 __ATTR_RO(card_id),
912 __ATTR_RO(prod_id1),
913 __ATTR_RO(prod_id2),
914 __ATTR_RO(prod_id3),
915 __ATTR_RO(prod_id4),
916 __ATTR_RO(modalias),
917 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
918 __ATTR_NULL,
919 };
920
921
922 /*======================================================================
923
924 The card status event handler.
925
926 ======================================================================*/
927
928 struct send_event_data {
929 struct pcmcia_socket *skt;
930 event_t event;
931 int priority;
932 };
933
934 static int send_event_callback(struct device *dev, void * _data)
935 {
936 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
937 struct pcmcia_driver *p_drv;
938 struct send_event_data *data = _data;
939
940 /* we get called for all sockets, but may only pass the event
941 * for drivers _on the affected socket_ */
942 if (p_dev->socket != data->skt)
943 return 0;
944
945 p_drv = to_pcmcia_drv(p_dev->dev.driver);
946 if (!p_drv)
947 return 0;
948
949 if (p_dev->state & (CLIENT_UNBOUND|CLIENT_STALE))
950 return 0;
951
952 if (p_drv->event)
953 return p_drv->event(data->event, data->priority,
954 &p_dev->event_callback_args);
955
956 return 0;
957 }
958
959 static int send_event(struct pcmcia_socket *s, event_t event, int priority)
960 {
961 struct send_event_data private;
962
963 private.skt = s;
964 private.event = event;
965 private.priority = priority;
966
967 return bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback);
968 } /* send_event */
969
970
971 /* Normally, the event is passed to individual drivers after
972 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
973 * is inversed to maintain historic compatibility.
974 */
975
976 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
977 {
978 struct pcmcia_socket *s = pcmcia_get_socket(skt);
979 int ret = 0;
980
981 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
982 event, priority, skt);
983
984 switch (event) {
985
986 case CS_EVENT_CARD_REMOVAL:
987 s->pcmcia_state.present = 0;
988 send_event(skt, event, priority);
989 unbind_request(skt);
990 handle_event(skt, event);
991 break;
992
993 case CS_EVENT_CARD_INSERTION:
994 s->pcmcia_state.present = 1;
995 pcmcia_card_add(skt);
996 handle_event(skt, event);
997 break;
998
999 case CS_EVENT_EJECTION_REQUEST:
1000 ret = send_event(skt, event, priority);
1001 break;
1002
1003 default:
1004 handle_event(skt, event);
1005 send_event(skt, event, priority);
1006 break;
1007 }
1008
1009 pcmcia_put_socket(s);
1010
1011 return 0;
1012 } /* ds_event */
1013
1014
1015
1016 int pcmcia_register_client(struct pcmcia_device **handle, client_reg_t *req)
1017 {
1018 struct pcmcia_socket *s = NULL;
1019 struct pcmcia_device *p_dev = NULL;
1020 struct pcmcia_driver *p_drv = NULL;
1021
1022 /* Look for unbound client with matching dev_info */
1023 down_read(&pcmcia_socket_list_rwsem);
1024 list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
1025 unsigned long flags;
1026
1027 if (s->state & SOCKET_CARDBUS)
1028 continue;
1029
1030 s = pcmcia_get_socket(s);
1031 if (!s)
1032 continue;
1033 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1034 list_for_each_entry(p_dev, &s->devices_list, socket_device_list) {
1035 p_dev = pcmcia_get_dev(p_dev);
1036 if (!p_dev)
1037 continue;
1038 if (!(p_dev->state & CLIENT_UNBOUND) ||
1039 (!p_dev->dev.driver)) {
1040 pcmcia_put_dev(p_dev);
1041 continue;
1042 }
1043 p_drv = to_pcmcia_drv(p_dev->dev.driver);
1044 if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) {
1045 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1046 goto found;
1047 }
1048 pcmcia_put_dev(p_dev);
1049 }
1050 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1051 pcmcia_put_socket(s);
1052 }
1053 found:
1054 up_read(&pcmcia_socket_list_rwsem);
1055 if (!p_dev)
1056 return -ENODEV;
1057
1058 pcmcia_put_socket(s); /* safe, as we already hold a reference from bind_device */
1059
1060 *handle = p_dev;
1061 p_dev->state &= ~CLIENT_UNBOUND;
1062 p_dev->event_callback_args = req->event_callback_args;
1063 p_dev->event_callback_args.client_handle = p_dev;
1064
1065
1066 if (!s->functions) {
1067 cistpl_longlink_mfc_t mfc;
1068 if (pccard_read_tuple(s, p_dev->func, CISTPL_LONGLINK_MFC, &mfc)
1069 == CS_SUCCESS)
1070 s->functions = mfc.nfn;
1071 else
1072 s->functions = 1;
1073 s->config = kmalloc(sizeof(config_t) * s->functions,
1074 GFP_KERNEL);
1075 if (!s->config)
1076 goto out_no_resource;
1077 memset(s->config, 0, sizeof(config_t) * s->functions);
1078 }
1079
1080 ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
1081 p_dev, p_dev->dev.bus_id);
1082
1083 if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
1084 if (p_drv->event)
1085 p_drv->event(CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW,
1086 &p_dev->event_callback_args);
1087
1088 }
1089
1090 return CS_SUCCESS;
1091
1092 out_no_resource:
1093 pcmcia_put_dev(p_dev);
1094 return CS_OUT_OF_RESOURCE;
1095 } /* register_client */
1096 EXPORT_SYMBOL(pcmcia_register_client);
1097
1098
1099 /* unbind _all_ devices attached to a given pcmcia_bus_socket. The
1100 * drivers have been called with EVENT_CARD_REMOVAL before.
1101 */
1102 static int unbind_request(struct pcmcia_socket *s)
1103 {
1104 struct pcmcia_device *p_dev;
1105 unsigned long flags;
1106
1107 ds_dbg(2, "unbind_request(%d)\n", s->sock);
1108
1109 s->device_count = 0;
1110
1111 for (;;) {
1112 /* unregister all pcmcia_devices registered with this socket*/
1113 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1114 if (list_empty(&s->devices_list)) {
1115 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1116 return 0;
1117 }
1118 p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list);
1119 list_del(&p_dev->socket_device_list);
1120 p_dev->state |= CLIENT_STALE;
1121 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1122
1123 device_unregister(&p_dev->dev);
1124 }
1125
1126 return 0;
1127 } /* unbind_request */
1128
1129 int pcmcia_deregister_client(struct pcmcia_device *p_dev)
1130 {
1131 struct pcmcia_socket *s;
1132 int i;
1133
1134 s = p_dev->socket;
1135 ds_dbg(1, "deregister_client(%p)\n", p_dev);
1136
1137 if (p_dev->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
1138 goto warn_out;
1139 for (i = 0; i < MAX_WIN; i++)
1140 if (p_dev->state & CLIENT_WIN_REQ(i))
1141 goto warn_out;
1142
1143 if (p_dev->state & CLIENT_STALE) {
1144 p_dev->state &= ~CLIENT_STALE;
1145 pcmcia_put_dev(p_dev);
1146 } else {
1147 p_dev->state = CLIENT_UNBOUND;
1148 }
1149
1150 return CS_SUCCESS;
1151 warn_out:
1152 printk(KERN_WARNING "ds: deregister_client was called too early.\n");
1153 return CS_IN_USE;
1154 } /* deregister_client */
1155 EXPORT_SYMBOL(pcmcia_deregister_client);
1156
1157 static struct pcmcia_callback pcmcia_bus_callback = {
1158 .owner = THIS_MODULE,
1159 .event = ds_event,
1160 .requery = pcmcia_bus_rescan,
1161 };
1162
1163 static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev,
1164 struct class_interface *class_intf)
1165 {
1166 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1167 int ret;
1168
1169 socket = pcmcia_get_socket(socket);
1170 if (!socket) {
1171 printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
1172 return -ENODEV;
1173 }
1174
1175 /*
1176 * Ugly. But we want to wait for the socket threads to have started up.
1177 * We really should let the drivers themselves drive some of this..
1178 */
1179 msleep(250);
1180
1181 #ifdef CONFIG_PCMCIA_IOCTL
1182 init_waitqueue_head(&socket->queue);
1183 #endif
1184 INIT_LIST_HEAD(&socket->devices_list);
1185 INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket);
1186 memset(&socket->pcmcia_state, 0, sizeof(u8));
1187 socket->device_count = 0;
1188
1189 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1190 if (ret) {
1191 printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
1192 pcmcia_put_socket(socket);
1193 return (ret);
1194 }
1195
1196 return 0;
1197 }
1198
1199 static void pcmcia_bus_remove_socket(struct class_device *class_dev,
1200 struct class_interface *class_intf)
1201 {
1202 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1203
1204 if (!socket)
1205 return;
1206
1207 socket->pcmcia_state.dead = 1;
1208 pccard_register_pcmcia(socket, NULL);
1209
1210 pcmcia_put_socket(socket);
1211
1212 return;
1213 }
1214
1215
1216 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1217 static struct class_interface pcmcia_bus_interface = {
1218 .class = &pcmcia_socket_class,
1219 .add = &pcmcia_bus_add_socket,
1220 .remove = &pcmcia_bus_remove_socket,
1221 };
1222
1223
1224 struct bus_type pcmcia_bus_type = {
1225 .name = "pcmcia",
1226 .hotplug = pcmcia_bus_hotplug,
1227 .match = pcmcia_bus_match,
1228 .dev_attrs = pcmcia_dev_attrs,
1229 };
1230
1231
1232 static int __init init_pcmcia_bus(void)
1233 {
1234 spin_lock_init(&pcmcia_dev_list_lock);
1235
1236 bus_register(&pcmcia_bus_type);
1237 class_interface_register(&pcmcia_bus_interface);
1238
1239 pcmcia_setup_ioctl();
1240
1241 return 0;
1242 }
1243 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1244 * pcmcia_socket_class is already registered */
1245
1246
1247 static void __exit exit_pcmcia_bus(void)
1248 {
1249 pcmcia_cleanup_ioctl();
1250
1251 class_interface_unregister(&pcmcia_bus_interface);
1252
1253 bus_unregister(&pcmcia_bus_type);
1254 }
1255 module_exit(exit_pcmcia_bus);
1256
1257
1258 MODULE_ALIAS("ds");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree