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[PATCH] pcmcia: move PCMCIA ioctl to a separate file
[deliverable/linux.git] / drivers / pcmcia / ds.c
CommitLineData
1da177e4
LT		 1/*
2 * ds.c -- 16-bit PCMCIA core support
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * The initial developer of the original code is David A. Hinds
9 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
10 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
11 *
12 * (C) 1999 David A. Hinds
13 * (C) 2003 - 2004 Dominik Brodowski
14 */
15
16#include <linux/config.h>
17#include <linux/module.h>
18#include <linux/moduleparam.h>
19#include <linux/init.h>
20#include <linux/kernel.h>
21#include <linux/major.h>
22#include <linux/string.h>
23#include <linux/errno.h>
24#include <linux/slab.h>
25#include <linux/mm.h>
26#include <linux/fcntl.h>
27#include <linux/sched.h>
28#include <linux/smp_lock.h>
29#include <linux/timer.h>
30#include <linux/ioctl.h>
31#include <linux/proc_fs.h>
32#include <linux/poll.h>
33#include <linux/pci.h>
34#include <linux/list.h>
35#include <linux/delay.h>
36#include <linux/kref.h>
37#include <linux/workqueue.h>
840c2ac5 38#include <linux/crc32.h>
daa9517d 39#include <linux/firmware.h>
1da177e4
LT		 40
41#include <asm/atomic.h>
42
43#define IN_CARD_SERVICES
44#include <pcmcia/version.h>
45#include <pcmcia/cs_types.h>
46#include <pcmcia/cs.h>
47#include <pcmcia/bulkmem.h>
48#include <pcmcia/cistpl.h>
49#include <pcmcia/ds.h>
50#include <pcmcia/ss.h>
51
52#include "cs_internal.h"
e7a480d2 53#include "ds_internal.h"
1da177e4
LT		 54
55/*====================================================================*/
56
57/* Module parameters */
58
59MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
60MODULE_DESCRIPTION("PCMCIA Driver Services");
61MODULE_LICENSE("GPL");
62
63#ifdef DEBUG
e7a480d2 64int ds_pc_debug;
1da177e4
LT		 65
66module_param_named(pc_debug, ds_pc_debug, int, 0644);
67
68#define ds_dbg(lvl, fmt, arg...) do { \
69 if (ds_pc_debug > (lvl)) \
70 printk(KERN_DEBUG "ds: " fmt , ## arg); \
71} while (0)
72#else
73#define ds_dbg(lvl, fmt, arg...) do { } while (0)
74#endif
75
e7a480d2 76spinlock_t pcmcia_dev_list_lock;
1da177e4
LT		 77
78static int unbind_request(struct pcmcia_bus_socket *s);
79
80/*====================================================================*/
81
82/* code which was in cs.c before */
83
84/* String tables for error messages */
85
86typedef struct lookup_t {
87 int key;
88 char *msg;
89} lookup_t;
90
91static const lookup_t error_table[] = {
92 { CS_SUCCESS, "Operation succeeded" },
93 { CS_BAD_ADAPTER, "Bad adapter" },
94 { CS_BAD_ATTRIBUTE, "Bad attribute", },
95 { CS_BAD_BASE, "Bad base address" },
96 { CS_BAD_EDC, "Bad EDC" },
97 { CS_BAD_IRQ, "Bad IRQ" },
98 { CS_BAD_OFFSET, "Bad offset" },
99 { CS_BAD_PAGE, "Bad page number" },
100 { CS_READ_FAILURE, "Read failure" },
101 { CS_BAD_SIZE, "Bad size" },
102 { CS_BAD_SOCKET, "Bad socket" },
103 { CS_BAD_TYPE, "Bad type" },
104 { CS_BAD_VCC, "Bad Vcc" },
105 { CS_BAD_VPP, "Bad Vpp" },
106 { CS_BAD_WINDOW, "Bad window" },
107 { CS_WRITE_FAILURE, "Write failure" },
108 { CS_NO_CARD, "No card present" },
109 { CS_UNSUPPORTED_FUNCTION, "Usupported function" },
110 { CS_UNSUPPORTED_MODE, "Unsupported mode" },
111 { CS_BAD_SPEED, "Bad speed" },
112 { CS_BUSY, "Resource busy" },
113 { CS_GENERAL_FAILURE, "General failure" },
114 { CS_WRITE_PROTECTED, "Write protected" },
115 { CS_BAD_ARG_LENGTH, "Bad argument length" },
116 { CS_BAD_ARGS, "Bad arguments" },
117 { CS_CONFIGURATION_LOCKED, "Configuration locked" },
118 { CS_IN_USE, "Resource in use" },
119 { CS_NO_MORE_ITEMS, "No more items" },
120 { CS_OUT_OF_RESOURCE, "Out of resource" },
121 { CS_BAD_HANDLE, "Bad handle" },
122 { CS_BAD_TUPLE, "Bad CIS tuple" }
123};
124
125
126static const lookup_t service_table[] = {
127 { AccessConfigurationRegister, "AccessConfigurationRegister" },
128 { AddSocketServices, "AddSocketServices" },
129 { AdjustResourceInfo, "AdjustResourceInfo" },
130 { CheckEraseQueue, "CheckEraseQueue" },
131 { CloseMemory, "CloseMemory" },
132 { DeregisterClient, "DeregisterClient" },
133 { DeregisterEraseQueue, "DeregisterEraseQueue" },
134 { GetCardServicesInfo, "GetCardServicesInfo" },
135 { GetClientInfo, "GetClientInfo" },
136 { GetConfigurationInfo, "GetConfigurationInfo" },
137 { GetEventMask, "GetEventMask" },
138 { GetFirstClient, "GetFirstClient" },
139 { GetFirstRegion, "GetFirstRegion" },
140 { GetFirstTuple, "GetFirstTuple" },
141 { GetNextClient, "GetNextClient" },
142 { GetNextRegion, "GetNextRegion" },
143 { GetNextTuple, "GetNextTuple" },
144 { GetStatus, "GetStatus" },
145 { GetTupleData, "GetTupleData" },
146 { MapMemPage, "MapMemPage" },
147 { ModifyConfiguration, "ModifyConfiguration" },
148 { ModifyWindow, "ModifyWindow" },
149 { OpenMemory, "OpenMemory" },
150 { ParseTuple, "ParseTuple" },
151 { ReadMemory, "ReadMemory" },
152 { RegisterClient, "RegisterClient" },
153 { RegisterEraseQueue, "RegisterEraseQueue" },
154 { RegisterMTD, "RegisterMTD" },
155 { ReleaseConfiguration, "ReleaseConfiguration" },
156 { ReleaseIO, "ReleaseIO" },
157 { ReleaseIRQ, "ReleaseIRQ" },
158 { ReleaseWindow, "ReleaseWindow" },
159 { RequestConfiguration, "RequestConfiguration" },
160 { RequestIO, "RequestIO" },
161 { RequestIRQ, "RequestIRQ" },
162 { RequestSocketMask, "RequestSocketMask" },
163 { RequestWindow, "RequestWindow" },
164 { ResetCard, "ResetCard" },
165 { SetEventMask, "SetEventMask" },
166 { ValidateCIS, "ValidateCIS" },
167 { WriteMemory, "WriteMemory" },
168 { BindDevice, "BindDevice" },
169 { BindMTD, "BindMTD" },
170 { ReportError, "ReportError" },
171 { SuspendCard, "SuspendCard" },
172 { ResumeCard, "ResumeCard" },
173 { EjectCard, "EjectCard" },
174 { InsertCard, "InsertCard" },
175 { ReplaceCIS, "ReplaceCIS" }
176};
177
178
e94e15f7 179static int pcmcia_report_error(client_handle_t handle, error_info_t *err)
1da177e4
LT		 180{
181 int i;
182 char *serv;
183
184 if (CHECK_HANDLE(handle))
185 printk(KERN_NOTICE);
186 else {
187 struct pcmcia_device *p_dev = handle_to_pdev(handle);
188 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
189 }
190
191 for (i = 0; i < ARRAY_SIZE(service_table); i++)
192 if (service_table[i].key == err->func)
193 break;
194 if (i < ARRAY_SIZE(service_table))
195 serv = service_table[i].msg;
196 else
197 serv = "Unknown service number";
198
199 for (i = 0; i < ARRAY_SIZE(error_table); i++)
200 if (error_table[i].key == err->retcode)
201 break;
202 if (i < ARRAY_SIZE(error_table))
203 printk("%s: %s\n", serv, error_table[i].msg);
204 else
205 printk("%s: Unknown error code %#x\n", serv, err->retcode);
206
207 return CS_SUCCESS;
208} /* report_error */
1da177e4
LT		 209
210/* end of code which was in cs.c before */
211
212/*======================================================================*/
213
214void cs_error(client_handle_t handle, int func, int ret)
215{
216 error_info_t err = { func, ret };
217 pcmcia_report_error(handle, &err);
218}
219EXPORT_SYMBOL(cs_error);
220
23a83bfe
DB		 221
222static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
223{
224 struct pcmcia_device_id *did = p_drv->id_table;
225 unsigned int i;
226 u32 hash;
227
228 while (did && did->match_flags) {
229 for (i=0; i<4; i++) {
230 if (!did->prod_id[i])
231 continue;
232
233 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
234 if (hash == did->prod_id_hash[i])
235 continue;
236
237 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
238 "product string \"%s\": is 0x%x, should "
239 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
240 did->prod_id_hash[i], hash);
5085cb26
DB		 241 printk(KERN_DEBUG "pcmcia: see "
242 "Documentation/pcmcia/devicetable.txt for "
243 "details\n");
23a83bfe
DB		 244 }
245 did++;
246 }
247
248 return;
249}
250
daa9517d
DB		 251
252#ifdef CONFIG_PCMCIA_LOAD_CIS
253
254/**
255 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
256 * @dev - the pcmcia device which needs a CIS override
257 * @filename - requested filename in /lib/firmware/cis/
258 *
259 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
260 * the one provided by the card is broken. The firmware files reside in
261 * /lib/firmware/cis/ in userspace.
262 */
263static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
264{
265 struct pcmcia_socket *s = dev->socket;
266 const struct firmware *fw;
267 char path[20];
268 int ret=-ENOMEM;
269 cisdump_t *cis;
270
271 if (!filename)
272 return -EINVAL;
273
274 ds_dbg(1, "trying to load firmware %s\n", filename);
275
276 if (strlen(filename) > 14)
277 return -EINVAL;
278
279 snprintf(path, 20, "%s", filename);
280
281 if (request_firmware(&fw, path, &dev->dev) == 0) {
282 if (fw->size >= CISTPL_MAX_CIS_SIZE)
283 goto release;
284
285 cis = kmalloc(sizeof(cisdump_t), GFP_KERNEL);
286 if (!cis)
287 goto release;
288
289 memset(cis, 0, sizeof(cisdump_t));
290
291 cis->Length = fw->size + 1;
292 memcpy(cis->Data, fw->data, fw->size);
293
294 if (!pcmcia_replace_cis(s, cis))
295 ret = 0;
296 }
297 release:
298 release_firmware(fw);
299
300 return (ret);
301}
302
303#else /* !CONFIG_PCMCIA_LOAD_CIS */
304
305static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
306{
307 return -ENODEV;
308}
309
310#endif
311
312
1da177e4
LT		 313/*======================================================================*/
314
1da177e4 315
e7a480d2 316void pcmcia_release_bus_socket(struct kref *refcount)
1da177e4
LT		 317{
318 struct pcmcia_bus_socket *s = container_of(refcount, struct pcmcia_bus_socket, refcount);
319 pcmcia_put_socket(s->parent);
320 kfree(s);
321}
322
e7a480d2 323void pcmcia_put_bus_socket(struct pcmcia_bus_socket *s)
1da177e4
LT		 324{
325 kref_put(&s->refcount, pcmcia_release_bus_socket);
326}
327
e7a480d2 328struct pcmcia_bus_socket *pcmcia_get_bus_socket(struct pcmcia_bus_socket *s)
1da177e4
LT		 329{
330 kref_get(&s->refcount);
331 return (s);
332}
333
334/**
335 * pcmcia_register_driver - register a PCMCIA driver with the bus core
336 *
337 * Registers a PCMCIA driver with the PCMCIA bus core.
338 */
339static int pcmcia_device_probe(struct device *dev);
340static int pcmcia_device_remove(struct device * dev);
341
342int pcmcia_register_driver(struct pcmcia_driver *driver)
343{
344 if (!driver)
345 return -EINVAL;
346
23a83bfe
DB		 347 pcmcia_check_driver(driver);
348
1da177e4
LT		 349 /* initialize common fields */
350 driver->drv.bus = &pcmcia_bus_type;
351 driver->drv.owner = driver->owner;
352 driver->drv.probe = pcmcia_device_probe;
353 driver->drv.remove = pcmcia_device_remove;
354
355 return driver_register(&driver->drv);
356}
357EXPORT_SYMBOL(pcmcia_register_driver);
358
359/**
360 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
361 */
362void pcmcia_unregister_driver(struct pcmcia_driver *driver)
363{
364 driver_unregister(&driver->drv);
365}
366EXPORT_SYMBOL(pcmcia_unregister_driver);
367
1da177e4
LT		 368
369/* pcmcia_device handling */
370
e7a480d2 371struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
1da177e4
LT		 372{
373 struct device *tmp_dev;
374 tmp_dev = get_device(&p_dev->dev);
375 if (!tmp_dev)
376 return NULL;
377 return to_pcmcia_dev(tmp_dev);
378}
379
e7a480d2 380void pcmcia_put_dev(struct pcmcia_device *p_dev)
1da177e4
LT		 381{
382 if (p_dev)
383 put_device(&p_dev->dev);
384}
385
386static void pcmcia_release_dev(struct device *dev)
387{
388 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
389 ds_dbg(1, "releasing dev %p\n", p_dev);
390 pcmcia_put_bus_socket(p_dev->socket->pcmcia);
391 kfree(p_dev);
392}
393
394
395static int pcmcia_device_probe(struct device * dev)
396{
397 struct pcmcia_device *p_dev;
398 struct pcmcia_driver *p_drv;
399 int ret = 0;
400
401 dev = get_device(dev);
402 if (!dev)
403 return -ENODEV;
404
405 p_dev = to_pcmcia_dev(dev);
406 p_drv = to_pcmcia_drv(dev->driver);
407
408 if (!try_module_get(p_drv->owner)) {
409 ret = -EINVAL;
410 goto put_dev;
411 }
412
413 if (p_drv->attach) {
414 p_dev->instance = p_drv->attach();
415 if ((!p_dev->instance) || (p_dev->client.state & CLIENT_UNBOUND)) {
416 printk(KERN_NOTICE "ds: unable to create instance "
417 "of '%s'!\n", p_drv->drv.name);
418 ret = -EINVAL;
419 }
420 }
421
422 if (ret)
423 module_put(p_drv->owner);
424 put_dev:
425 if ((ret) || !(p_drv->attach))
426 put_device(dev);
427 return (ret);
428}
429
430
431static int pcmcia_device_remove(struct device * dev)
432{
433 struct pcmcia_device *p_dev;
434 struct pcmcia_driver *p_drv;
435
436 /* detach the "instance" */
437 p_dev = to_pcmcia_dev(dev);
438 p_drv = to_pcmcia_drv(dev->driver);
439
440 if (p_drv) {
441 if ((p_drv->detach) && (p_dev->instance)) {
442 p_drv->detach(p_dev->instance);
443 /* from pcmcia_probe_device */
444 put_device(&p_dev->dev);
445 }
446 module_put(p_drv->owner);
447 }
448
449 return 0;
450}
451
452
453
454/*
455 * pcmcia_device_query -- determine information about a pcmcia device
456 */
457static int pcmcia_device_query(struct pcmcia_device *p_dev)
458{
459 cistpl_manfid_t manf_id;
460 cistpl_funcid_t func_id;
461 cistpl_vers_1_t vers1;
462 unsigned int i;
463
464 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
465 CISTPL_MANFID, &manf_id)) {
466 p_dev->manf_id = manf_id.manf;
467 p_dev->card_id = manf_id.card;
468 p_dev->has_manf_id = 1;
469 p_dev->has_card_id = 1;
470 }
471
472 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
473 CISTPL_FUNCID, &func_id)) {
474 p_dev->func_id = func_id.func;
475 p_dev->has_func_id = 1;
476 } else {
477 /* rule of thumb: cards with no FUNCID, but with
478 * common memory device geometry information, are
479 * probably memory cards (from pcmcia-cs) */
480 cistpl_device_geo_t devgeo;
481 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
482 CISTPL_DEVICE_GEO, &devgeo)) {
483 ds_dbg(0, "mem device geometry probably means "
484 "FUNCID_MEMORY\n");
485 p_dev->func_id = CISTPL_FUNCID_MEMORY;
486 p_dev->has_func_id = 1;
487 }
488 }
489
490 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
491 &vers1)) {
492 for (i=0; i < vers1.ns; i++) {
493 char *tmp;
494 unsigned int length;
495
496 tmp = vers1.str + vers1.ofs[i];
497
498 length = strlen(tmp) + 1;
499 if ((length < 3) || (length > 255))
500 continue;
501
502 p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
503 GFP_KERNEL);
504 if (!p_dev->prod_id[i])
505 continue;
506
507 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
508 tmp, length);
509 }
510 }
511
512 return 0;
513}
514
515
516/* device_add_lock is needed to avoid double registration by cardmgr and kernel.
517 * Serializes pcmcia_device_add; will most likely be removed in future.
518 *
519 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
520 * won't work, this doesn't matter much at the moment: the driver core doesn't
521 * support it either.
522 */
523static DECLARE_MUTEX(device_add_lock);
524
e7a480d2 525struct pcmcia_device * pcmcia_device_add(struct pcmcia_bus_socket *s, unsigned int function)
1da177e4
LT		 526{
527 struct pcmcia_device *p_dev;
528 unsigned long flags;
529
530 s = pcmcia_get_bus_socket(s);
531 if (!s)
532 return NULL;
533
534 down(&device_add_lock);
535
1ad275e3
DB		 536 /* max of 2 devices per card */
537 if (s->device_count == 2)
538 goto err_put;
539
1da177e4
LT		 540 p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
541 if (!p_dev)
542 goto err_put;
543 memset(p_dev, 0, sizeof(struct pcmcia_device));
544
545 p_dev->socket = s->parent;
546 p_dev->device_no = (s->device_count++);
547 p_dev->func = function;
548
549 p_dev->dev.bus = &pcmcia_bus_type;
550 p_dev->dev.parent = s->parent->dev.dev;
551 p_dev->dev.release = pcmcia_release_dev;
552 sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
553
554 /* compat */
555 p_dev->client.client_magic = CLIENT_MAGIC;
556 p_dev->client.Socket = s->parent;
557 p_dev->client.Function = function;
558 p_dev->client.state = CLIENT_UNBOUND;
559
560 /* Add to the list in pcmcia_bus_socket */
561 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
562 list_add_tail(&p_dev->socket_device_list, &s->devices_list);
563 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
564
1ad275e3
DB		 565 pcmcia_device_query(p_dev);
566
1da177e4
LT		 567 if (device_register(&p_dev->dev)) {
568 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
569 list_del(&p_dev->socket_device_list);
570 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
571
572 goto err_free;
573 }
574
575 up(&device_add_lock);
576
577 return p_dev;
578
579 err_free:
580 kfree(p_dev);
581 s->device_count--;
582 err_put:
583 up(&device_add_lock);
584 pcmcia_put_bus_socket(s);
585
586 return NULL;
587}
588
589
590static int pcmcia_card_add(struct pcmcia_socket *s)
591{
592 cisinfo_t cisinfo;
593 cistpl_longlink_mfc_t mfc;
594 unsigned int no_funcs, i;
595 int ret = 0;
596
597 if (!(s->resource_setup_done))
598 return -EAGAIN; /* try again, but later... */
599
600 pcmcia_validate_mem(s);
601 ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
602 if (ret || !cisinfo.Chains) {
603 ds_dbg(0, "invalid CIS or invalid resources\n");
604 return -ENODEV;
605 }
606
607 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
608 no_funcs = mfc.nfn;
609 else
610 no_funcs = 1;
611
612 /* this doesn't handle multifunction devices on one pcmcia function
613 * yet. */
614 for (i=0; i < no_funcs; i++)
615 pcmcia_device_add(s->pcmcia, i);
616
617 return (ret);
618}
619
620
1ad275e3
DB		 621static void pcmcia_delayed_add_pseudo_device(void *data)
622{
623 struct pcmcia_bus_socket *s = data;
624 pcmcia_device_add(s, 0);
625 s->device_add_pending = 0;
626}
627
628static inline void pcmcia_add_pseudo_device(struct pcmcia_bus_socket *s)
629{
630 if (!s->device_add_pending) {
631 schedule_work(&s->device_add);
632 s->device_add_pending = 1;
633 }
634 return;
635}
636
e2f0b534 637static int pcmcia_requery(struct device *dev, void * _data)
ff1fa9ef 638{
e2f0b534
DB		 639 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
640 if (!p_dev->dev.driver)
641 pcmcia_device_query(p_dev);
642
643 return 0;
644}
645
646static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
647{
648 int no_devices=0;
649 unsigned long flags;
650
ff1fa9ef 651 /* must be called with skt_sem held */
e2f0b534
DB		 652 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
653 if (list_empty(&skt->pcmcia->devices_list))
654 no_devices=1;
655 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
656
657 /* if no devices were added for this socket yet because of
658 * missing resource information or other trouble, we need to
659 * do this now. */
660 if (no_devices) {
661 int ret = pcmcia_card_add(skt);
662 if (ret)
663 return;
664 }
665
666 /* some device information might have changed because of a CIS
667 * update or because we can finally read it correctly... so
668 * determine it again, overwriting old values if necessary. */
669 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
670
671 /* we re-scan all devices, not just the ones connected to this
672 * socket. This does not matter, though. */
a5b55778 673 bus_rescan_devices(&pcmcia_bus_type);
ff1fa9ef 674}
1ad275e3
DB		 675
676static inline int pcmcia_devmatch(struct pcmcia_device *dev,
677 struct pcmcia_device_id *did)
678{
679 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
680 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
681 return 0;
682 }
683
684 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
685 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
686 return 0;
687 }
688
689 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
690 if (dev->func != did->function)
691 return 0;
692 }
693
694 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
695 if (!dev->prod_id[0])
696 return 0;
697 if (strcmp(did->prod_id[0], dev->prod_id[0]))
698 return 0;
699 }
700
701 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
702 if (!dev->prod_id[1])
703 return 0;
704 if (strcmp(did->prod_id[1], dev->prod_id[1]))
705 return 0;
706 }
707
708 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
709 if (!dev->prod_id[2])
710 return 0;
711 if (strcmp(did->prod_id[2], dev->prod_id[2]))
712 return 0;
713 }
714
715 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
716 if (!dev->prod_id[3])
717 return 0;
718 if (strcmp(did->prod_id[3], dev->prod_id[3]))
719 return 0;
720 }
721
722 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
723 /* handle pseudo multifunction devices:
724 * there are at most two pseudo multifunction devices.
725 * if we're matching against the first, schedule a
726 * call which will then check whether there are two
727 * pseudo devices, and if not, add the second one.
728 */
729 if (dev->device_no == 0)
730 pcmcia_add_pseudo_device(dev->socket->pcmcia);
731
732 if (dev->device_no != did->device_no)
733 return 0;
734 }
735
736 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
737 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
738 return 0;
739
740 /* if this is a pseudo-multi-function device,
741 * we need explicit matches */
742 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
743 return 0;
744 if (dev->device_no)
745 return 0;
746
747 /* also, FUNC_ID matching needs to be activated by userspace
748 * after it has re-checked that there is no possible module
749 * with a prod_id/manf_id/card_id match.
750 */
751 if (!dev->allow_func_id_match)
752 return 0;
753 }
754
ea7b3882 755 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
daa9517d
DB		 756 if (!dev->socket->fake_cis)
757 pcmcia_load_firmware(dev, did->cisfile);
758
759 if (!dev->socket->fake_cis)
ea7b3882 760 return 0;
ea7b3882
DB		 761 }
762
f602ff7e
DB		 763 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
764 int i;
765 for (i=0; i<4; i++)
766 if (dev->prod_id[i])
767 return 0;
768 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
769 return 0;
770 }
771
1ad275e3
DB		 772 dev->dev.driver_data = (void *) did;
773
774 return 1;
775}
776
777
1da177e4
LT		 778static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
779 struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
780 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
1ad275e3 781 struct pcmcia_device_id *did = p_drv->id_table;
1da177e4
LT		 782
783 /* matching by cardmgr */
784 if (p_dev->cardmgr == p_drv)
785 return 1;
786
1ad275e3
DB		 787 while (did && did->match_flags) {
788 if (pcmcia_devmatch(p_dev, did))
789 return 1;
790 did++;
791 }
792
1da177e4
LT		 793 return 0;
794}
795
840c2ac5
DB		 796#ifdef CONFIG_HOTPLUG
797
798static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
799 char *buffer, int buffer_size)
800{
801 struct pcmcia_device *p_dev;
802 int i, length = 0;
803 u32 hash[4] = { 0, 0, 0, 0};
804
805 if (!dev)
806 return -ENODEV;
807
808 p_dev = to_pcmcia_dev(dev);
809
810 /* calculate hashes */
811 for (i=0; i<4; i++) {
812 if (!p_dev->prod_id[i])
813 continue;
814 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
815 }
816
817 i = 0;
818
819 if (add_hotplug_env_var(envp, num_envp, &i,
820 buffer, buffer_size, &length,
821 "SOCKET_NO=%u",
822 p_dev->socket->sock))
823 return -ENOMEM;
824
825 if (add_hotplug_env_var(envp, num_envp, &i,
826 buffer, buffer_size, &length,
827 "DEVICE_NO=%02X",
828 p_dev->device_no))
829 return -ENOMEM;
830
831 if (add_hotplug_env_var(envp, num_envp, &i,
832 buffer, buffer_size, &length,
833 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
834 "pa%08Xpb%08Xpc%08Xpd%08X",
835 p_dev->has_manf_id ? p_dev->manf_id : 0,
836 p_dev->has_card_id ? p_dev->card_id : 0,
837 p_dev->has_func_id ? p_dev->func_id : 0,
838 p_dev->func,
839 p_dev->device_no,
840 hash[0],
841 hash[1],
842 hash[2],
843 hash[3]))
844 return -ENOMEM;
845
846 envp[i] = NULL;
847
848 return 0;
849}
850
851#else
852
853static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
854 char *buffer, int buffer_size)
855{
856 return -ENODEV;
857}
858
859#endif
860
1da177e4
LT		 861/************************ per-device sysfs output ***************************/
862
863#define pcmcia_device_attr(field, test, format) \
e404e274 864static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 865{ \
866 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
867 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
868}
869
870#define pcmcia_device_stringattr(name, field) \
e404e274 871static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1da177e4
LT		 872{ \
873 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
874 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
875}
876
877pcmcia_device_attr(func, socket, "0x%02x\n");
878pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
879pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
880pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
881pcmcia_device_stringattr(prod_id1, prod_id[0]);
882pcmcia_device_stringattr(prod_id2, prod_id[1]);
883pcmcia_device_stringattr(prod_id3, prod_id[2]);
884pcmcia_device_stringattr(prod_id4, prod_id[3]);
885
a5b55778
DB		 886
887static ssize_t pcmcia_store_allow_func_id_match (struct device * dev, struct device_attribute *attr,
888 const char * buf, size_t count)
889{
890 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
891 if (!count)
892 return -EINVAL;
893
894 down(&p_dev->socket->skt_sem);
895 p_dev->allow_func_id_match = 1;
896 up(&p_dev->socket->skt_sem);
897
898 bus_rescan_devices(&pcmcia_bus_type);
899
900 return count;
901}
902
1da177e4
LT		 903static struct device_attribute pcmcia_dev_attrs[] = {
904 __ATTR(function, 0444, func_show, NULL),
905 __ATTR_RO(func_id),
906 __ATTR_RO(manf_id),
907 __ATTR_RO(card_id),
908 __ATTR_RO(prod_id1),
909 __ATTR_RO(prod_id2),
910 __ATTR_RO(prod_id3),
911 __ATTR_RO(prod_id4),
a5b55778 912 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
1da177e4
LT		 913 __ATTR_NULL,
914};
915
916
1da177e4
LT		 917/*======================================================================
918
919 The card status event handler.
920
921======================================================================*/
922
923struct send_event_data {
924 struct pcmcia_socket *skt;
925 event_t event;
926 int priority;
927};
928
929static int send_event_callback(struct device *dev, void * _data)
930{
931 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
932 struct send_event_data *data = _data;
933
934 /* we get called for all sockets, but may only pass the event
935 * for drivers _on the affected socket_ */
936 if (p_dev->socket != data->skt)
937 return 0;
938
939 if (p_dev->client.state & (CLIENT_UNBOUND|CLIENT_STALE))
940 return 0;
941
942 if (p_dev->client.EventMask & data->event)
943 return EVENT(&p_dev->client, data->event, data->priority);
944
945 return 0;
946}
947
948static int send_event(struct pcmcia_socket *s, event_t event, int priority)
949{
950 int ret = 0;
951 struct send_event_data private;
952 struct pcmcia_bus_socket *skt = pcmcia_get_bus_socket(s->pcmcia);
953
954 if (!skt)
955 return 0;
956
957 private.skt = s;
958 private.event = event;
959 private.priority = priority;
960
961 ret = bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback);
962
963 pcmcia_put_bus_socket(skt);
964 return ret;
965} /* send_event */
966
967
968/* Normally, the event is passed to individual drivers after
969 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
970 * is inversed to maintain historic compatibility.
971 */
972
973static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
974{
975 struct pcmcia_bus_socket *s = skt->pcmcia;
976 int ret = 0;
977
978 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
979 event, priority, s);
980
981 switch (event) {
982
983 case CS_EVENT_CARD_REMOVAL:
984 s->state &= ~DS_SOCKET_PRESENT;
985 send_event(skt, event, priority);
986 unbind_request(s);
987 handle_event(s, event);
988 break;
989
990 case CS_EVENT_CARD_INSERTION:
991 s->state |= DS_SOCKET_PRESENT;
992 pcmcia_card_add(skt);
993 handle_event(s, event);
994 break;
995
996 case CS_EVENT_EJECTION_REQUEST:
997 ret = send_event(skt, event, priority);
998 break;
999
1000 default:
1001 handle_event(s, event);
1002 send_event(skt, event, priority);
1003 break;
1004 }
1005
1006 return 0;
1007} /* ds_event */
1008
1009
1da177e4
LT		 1010
1011int pcmcia_register_client(client_handle_t *handle, client_reg_t *req)
1012{
1013 client_t *client = NULL;
1014 struct pcmcia_socket *s;
1015 struct pcmcia_bus_socket *skt = NULL;
1016 struct pcmcia_device *p_dev = NULL;
1017
1018 /* Look for unbound client with matching dev_info */
1019 down_read(&pcmcia_socket_list_rwsem);
1020 list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
1021 unsigned long flags;
1022
1023 if (s->state & SOCKET_CARDBUS)
1024 continue;
1025
1026 skt = s->pcmcia;
1027 if (!skt)
1028 continue;
1029 skt = pcmcia_get_bus_socket(skt);
1030 if (!skt)
1031 continue;
1032 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1033 list_for_each_entry(p_dev, &skt->devices_list, socket_device_list) {
1034 struct pcmcia_driver *p_drv;
1035 p_dev = pcmcia_get_dev(p_dev);
1036 if (!p_dev)
1037 continue;
1038 if (!(p_dev->client.state & CLIENT_UNBOUND) ||
1039 (!p_dev->dev.driver)) {
1040 pcmcia_put_dev(p_dev);
1041 continue;
1042 }
1043 p_drv = to_pcmcia_drv(p_dev->dev.driver);
1044 if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) {
1045 client = &p_dev->client;
1046 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1047 goto found;
1048 }
1049 pcmcia_put_dev(p_dev);
1050 }
1051 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1052 pcmcia_put_bus_socket(skt);
1053 }
1054 found:
1055 up_read(&pcmcia_socket_list_rwsem);
1056 if (!p_dev || !client)
1057 return -ENODEV;
1058
1059 pcmcia_put_bus_socket(skt); /* safe, as we already hold a reference from bind_device */
1060
1061 *handle = client;
1062 client->state &= ~CLIENT_UNBOUND;
1063 client->Socket = s;
1064 client->EventMask = req->EventMask;
1065 client->event_handler = req->event_handler;
1066 client->event_callback_args = req->event_callback_args;
1067 client->event_callback_args.client_handle = client;
1068
1069 if (s->state & SOCKET_CARDBUS)
1070 client->state |= CLIENT_CARDBUS;
1071
1072 if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0) &&
1073 (client->Function != BIND_FN_ALL)) {
1074 cistpl_longlink_mfc_t mfc;
1075 if (pccard_read_tuple(s, client->Function, CISTPL_LONGLINK_MFC, &mfc)
1076 == CS_SUCCESS)
1077 s->functions = mfc.nfn;
1078 else
1079 s->functions = 1;
1080 s->config = kmalloc(sizeof(config_t) * s->functions,
1081 GFP_KERNEL);
1082 if (!s->config)
1083 goto out_no_resource;
1084 memset(s->config, 0, sizeof(config_t) * s->functions);
1085 }
1086
1087 ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
1088 client, p_dev->dev.bus_id);
1089 if (client->EventMask & CS_EVENT_REGISTRATION_COMPLETE)
1090 EVENT(client, CS_EVENT_REGISTRATION_COMPLETE, CS_EVENT_PRI_LOW);
1091
1092 if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
1093 if (client->EventMask & CS_EVENT_CARD_INSERTION)
1094 EVENT(client, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW);
1095 }
1096
1097 return CS_SUCCESS;
1098
1099 out_no_resource:
1100 pcmcia_put_dev(p_dev);
1101 return CS_OUT_OF_RESOURCE;
1102} /* register_client */
1103EXPORT_SYMBOL(pcmcia_register_client);
1104
1105
1da177e4
LT		 1106/* unbind _all_ devices attached to a given pcmcia_bus_socket. The
1107 * drivers have been called with EVENT_CARD_REMOVAL before.
1108 */
1109static int unbind_request(struct pcmcia_bus_socket *s)
1110{
1111 struct pcmcia_device *p_dev;
1112 unsigned long flags;
1113
1114 ds_dbg(2, "unbind_request(%d)\n", s->parent->sock);
1115
1116 s->device_count = 0;
1117
1118 for (;;) {
1119 /* unregister all pcmcia_devices registered with this socket*/
1120 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1121 if (list_empty(&s->devices_list)) {
1122 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1123 return 0;
1124 }
1125 p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list);
1126 list_del(&p_dev->socket_device_list);
1127 p_dev->client.state |= CLIENT_STALE;
1128 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1129
1130 device_unregister(&p_dev->dev);
1131 }
1132
1133 return 0;
1134} /* unbind_request */
1135
1136int pcmcia_deregister_client(client_handle_t handle)
1137{
1138 struct pcmcia_socket *s;
1139 int i;
1140 struct pcmcia_device *p_dev = handle_to_pdev(handle);
1141
1142 if (CHECK_HANDLE(handle))
1143 return CS_BAD_HANDLE;
1144
1145 s = SOCKET(handle);
1146 ds_dbg(1, "deregister_client(%p)\n", handle);
1147
1148 if (handle->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
1149 goto warn_out;
1150 for (i = 0; i < MAX_WIN; i++)
1151 if (handle->state & CLIENT_WIN_REQ(i))
1152 goto warn_out;
1153
1154 if (handle->state & CLIENT_STALE) {
1155 handle->client_magic = 0;
1156 handle->state &= ~CLIENT_STALE;
1157 pcmcia_put_dev(p_dev);
1158 } else {
1159 handle->state = CLIENT_UNBOUND;
1160 handle->event_handler = NULL;
1161 }
1162
1163 return CS_SUCCESS;
1164 warn_out:
1165 printk(KERN_WARNING "ds: deregister_client was called too early.\n");
1166 return CS_IN_USE;
1167} /* deregister_client */
1168EXPORT_SYMBOL(pcmcia_deregister_client);
1169
1da177e4
LT		 1170static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev)
1171{
1172 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1173 struct pcmcia_bus_socket *s;
1174 int ret;
1175
1176 s = kmalloc(sizeof(struct pcmcia_bus_socket), GFP_KERNEL);
1177 if(!s)
1178 return -ENOMEM;
1179 memset(s, 0, sizeof(struct pcmcia_bus_socket));
1180
1181 /* get reference to parent socket */
1182 s->parent = pcmcia_get_socket(socket);
1183 if (!s->parent) {
1184 printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
1185 kfree (s);
1186 return -ENODEV;
1187 }
1188
1189 kref_init(&s->refcount);
1190
1191 /*
1192 * Ugly. But we want to wait for the socket threads to have started up.
1193 * We really should let the drivers themselves drive some of this..
1194 */
1195 msleep(250);
1196
e7a480d2 1197#ifdef CONFIG_PCMCIA_IOCTL
1da177e4 1198 init_waitqueue_head(&s->queue);
e7a480d2 1199#endif
1da177e4 1200 INIT_LIST_HEAD(&s->devices_list);
1ad275e3 1201 INIT_WORK(&s->device_add, pcmcia_delayed_add_pseudo_device, s);
1da177e4
LT		 1202
1203 /* Set up hotline to Card Services */
1204 s->callback.owner = THIS_MODULE;
1205 s->callback.event = &ds_event;
e2f0b534 1206 s->callback.requery = &pcmcia_bus_rescan;
1da177e4
LT		 1207 socket->pcmcia = s;
1208
1209 ret = pccard_register_pcmcia(socket, &s->callback);
1210 if (ret) {
1211 printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
1212 pcmcia_put_bus_socket(s);
1213 socket->pcmcia = NULL;
1214 return (ret);
1215 }
1216
1217 return 0;
1218}
1219
1220
1221static void pcmcia_bus_remove_socket(struct class_device *class_dev)
1222{
1223 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1224
1225 if (!socket || !socket->pcmcia)
1226 return;
1227
1228 pccard_register_pcmcia(socket, NULL);
1229
1230 socket->pcmcia->state |= DS_SOCKET_DEAD;
1231 pcmcia_put_bus_socket(socket->pcmcia);
1232 socket->pcmcia = NULL;
1233
1234 return;
1235}
1236
1237
1238/* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1239static struct class_interface pcmcia_bus_interface = {
1240 .class = &pcmcia_socket_class,
1241 .add = &pcmcia_bus_add_socket,
1242 .remove = &pcmcia_bus_remove_socket,
1243};
1244
1245
e7a480d2 1246struct bus_type pcmcia_bus_type = {
1da177e4 1247 .name = "pcmcia",
840c2ac5 1248 .hotplug = pcmcia_bus_hotplug,
1da177e4
LT		 1249 .match = pcmcia_bus_match,
1250 .dev_attrs = pcmcia_dev_attrs,
1251};
1da177e4
LT		 1252
1253
1254static int __init init_pcmcia_bus(void)
1255{
1da177e4
LT		 1256 spin_lock_init(&pcmcia_dev_list_lock);
1257
1258 bus_register(&pcmcia_bus_type);
1259 class_interface_register(&pcmcia_bus_interface);
1260
e7a480d2 1261 pcmcia_setup_ioctl();
1da177e4
LT		 1262
1263 return 0;
1264}
1265fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1266 * pcmcia_socket_class is already registered */
1267
1268
1269static void __exit exit_pcmcia_bus(void)
1270{
e7a480d2 1271 pcmcia_cleanup_ioctl();
1da177e4 1272
e7a480d2 1273 class_interface_unregister(&pcmcia_bus_interface);
1da177e4
LT		 1274
1275 bus_unregister(&pcmcia_bus_type);
1276}
1277module_exit(exit_pcmcia_bus);
1278
1279
1da177e4 1280MODULE_ALIAS("ds");
Linux kernel - Deliverables
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