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pcmcia: merge ds_internal.h into cs_internal.h
[linux-2.6/cjktty.git] / drivers / pcmcia / ds.c
blob604249a170c5bb0d079a323f31d71cb545e8f991
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 - 2006 Dominik Brodowski
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/errno.h>
20 #include <linux/list.h>
21 #include <linux/delay.h>
22 #include <linux/workqueue.h>
23 #include <linux/crc32.h>
24 #include <linux/firmware.h>
25 #include <linux/kref.h>
26 #include <linux/dma-mapping.h>
27
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
36 /*====================================================================*/
37
38 /* Module parameters */
39
40 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
41 MODULE_DESCRIPTION("PCMCIA Driver Services");
42 MODULE_LICENSE("GPL");
43
44 #ifdef CONFIG_PCMCIA_DEBUG
45 int ds_pc_debug;
46
47 module_param_named(pc_debug, ds_pc_debug, int, 0644);
48
49 #define ds_dbg(lvl, fmt, arg...) do { \
50 if (ds_pc_debug > (lvl)) \
51 printk(KERN_DEBUG "ds: " fmt , ## arg); \
52 } while (0)
53 #define ds_dev_dbg(lvl, dev, fmt, arg...) do { \
54 if (ds_pc_debug > (lvl)) \
55 dev_printk(KERN_DEBUG, dev, "ds: " fmt , ## arg); \
56 } while (0)
57 #else
58 #define ds_dbg(lvl, fmt, arg...) do { } while (0)
59 #define ds_dev_dbg(lvl, dev, fmt, arg...) do { } while (0)
60 #endif
61
62 spinlock_t pcmcia_dev_list_lock;
63
64 /*====================================================================*/
65
66 /* code which was in cs.c before */
67
68 /* String tables for error messages */
69
70 typedef struct lookup_t {
71 const int key;
72 const char *msg;
73 } lookup_t;
74
75 static const lookup_t error_table[] = {
76 { 0, "Operation succeeded" },
77 { -EIO, "Input/Output error" },
78 { -ENODEV, "No card present" },
79 { -EINVAL, "Bad parameter" },
80 { -EACCES, "Configuration locked" },
81 { -EBUSY, "Resource in use" },
82 { -ENOSPC, "No more items" },
83 { -ENOMEM, "Out of resource" },
84 };
85
86
87 static const lookup_t service_table[] = {
88 { AccessConfigurationRegister, "AccessConfigurationRegister" },
89 { AddSocketServices, "AddSocketServices" },
90 { AdjustResourceInfo, "AdjustResourceInfo" },
91 { CheckEraseQueue, "CheckEraseQueue" },
92 { CloseMemory, "CloseMemory" },
93 { DeregisterClient, "DeregisterClient" },
94 { DeregisterEraseQueue, "DeregisterEraseQueue" },
95 { GetCardServicesInfo, "GetCardServicesInfo" },
96 { GetClientInfo, "GetClientInfo" },
97 { GetConfigurationInfo, "GetConfigurationInfo" },
98 { GetEventMask, "GetEventMask" },
99 { GetFirstClient, "GetFirstClient" },
100 { GetFirstRegion, "GetFirstRegion" },
101 { GetFirstTuple, "GetFirstTuple" },
102 { GetNextClient, "GetNextClient" },
103 { GetNextRegion, "GetNextRegion" },
104 { GetNextTuple, "GetNextTuple" },
105 { GetStatus, "GetStatus" },
106 { GetTupleData, "GetTupleData" },
107 { MapMemPage, "MapMemPage" },
108 { ModifyConfiguration, "ModifyConfiguration" },
109 { ModifyWindow, "ModifyWindow" },
110 { OpenMemory, "OpenMemory" },
111 { ParseTuple, "ParseTuple" },
112 { ReadMemory, "ReadMemory" },
113 { RegisterClient, "RegisterClient" },
114 { RegisterEraseQueue, "RegisterEraseQueue" },
115 { RegisterMTD, "RegisterMTD" },
116 { ReleaseConfiguration, "ReleaseConfiguration" },
117 { ReleaseIO, "ReleaseIO" },
118 { ReleaseIRQ, "ReleaseIRQ" },
119 { ReleaseWindow, "ReleaseWindow" },
120 { RequestConfiguration, "RequestConfiguration" },
121 { RequestIO, "RequestIO" },
122 { RequestIRQ, "RequestIRQ" },
123 { RequestSocketMask, "RequestSocketMask" },
124 { RequestWindow, "RequestWindow" },
125 { ResetCard, "ResetCard" },
126 { SetEventMask, "SetEventMask" },
127 { ValidateCIS, "ValidateCIS" },
128 { WriteMemory, "WriteMemory" },
129 { BindDevice, "BindDevice" },
130 { BindMTD, "BindMTD" },
131 { ReportError, "ReportError" },
132 { SuspendCard, "SuspendCard" },
133 { ResumeCard, "ResumeCard" },
134 { EjectCard, "EjectCard" },
135 { InsertCard, "InsertCard" },
136 { ReplaceCIS, "ReplaceCIS" }
137 };
138
139 const char *pcmcia_error_func(int func)
140 {
141 int i;
142
143 for (i = 0; i < ARRAY_SIZE(service_table); i++)
144 if (service_table[i].key == func)
145 return service_table[i].msg;
146
147 return "Unknown service number";
148 }
149 EXPORT_SYMBOL(pcmcia_error_func);
150
151 const char *pcmcia_error_ret(int ret)
152 {
153 int i;
154
155 for (i = 0; i < ARRAY_SIZE(error_table); i++)
156 if (error_table[i].key == ret)
157 return error_table[i].msg;
158
159 return "unknown";
160 }
161 EXPORT_SYMBOL(pcmcia_error_ret);
162
163 /*======================================================================*/
164
165
166
167 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
168 {
169 struct pcmcia_device_id *did = p_drv->id_table;
170 unsigned int i;
171 u32 hash;
172
173 if (!p_drv->probe || !p_drv->remove)
174 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
175 "function\n", p_drv->drv.name);
176
177 while (did && did->match_flags) {
178 for (i=0; i<4; i++) {
179 if (!did->prod_id[i])
180 continue;
181
182 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
183 if (hash == did->prod_id_hash[i])
184 continue;
185
186 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
187 "product string \"%s\": is 0x%x, should "
188 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
189 did->prod_id_hash[i], hash);
190 printk(KERN_DEBUG "pcmcia: see "
191 "Documentation/pcmcia/devicetable.txt for "
192 "details\n");
193 }
194 did++;
195 }
196
197 return;
198 }
199
200
201 /*======================================================================*/
202
203
204 struct pcmcia_dynid {
205 struct list_head node;
206 struct pcmcia_device_id id;
207 };
208
209 /**
210 * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices
211 * @driver: target device driver
212 * @buf: buffer for scanning device ID data
213 * @count: input size
214 *
215 * Adds a new dynamic PCMCIA device ID to this driver,
216 * and causes the driver to probe for all devices again.
217 */
218 static ssize_t
219 pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count)
220 {
221 struct pcmcia_dynid *dynid;
222 struct pcmcia_driver *pdrv = to_pcmcia_drv(driver);
223 __u16 match_flags, manf_id, card_id;
224 __u8 func_id, function, device_no;
225 __u32 prod_id_hash[4] = {0, 0, 0, 0};
226 int fields=0;
227 int retval = 0;
228
229 fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
230 &match_flags, &manf_id, &card_id, &func_id, &function, &device_no,
231 &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]);
232 if (fields < 6)
233 return -EINVAL;
234
235 dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL);
236 if (!dynid)
237 return -ENOMEM;
238
239 INIT_LIST_HEAD(&dynid->node);
240 dynid->id.match_flags = match_flags;
241 dynid->id.manf_id = manf_id;
242 dynid->id.card_id = card_id;
243 dynid->id.func_id = func_id;
244 dynid->id.function = function;
245 dynid->id.device_no = device_no;
246 memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4);
247
248 spin_lock(&pdrv->dynids.lock);
249 list_add_tail(&pdrv->dynids.list, &dynid->node);
250 spin_unlock(&pdrv->dynids.lock);
251
252 if (get_driver(&pdrv->drv)) {
253 retval = driver_attach(&pdrv->drv);
254 put_driver(&pdrv->drv);
255 }
256
257 if (retval)
258 return retval;
259 return count;
260 }
261 static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id);
262
263 static void
264 pcmcia_free_dynids(struct pcmcia_driver *drv)
265 {
266 struct pcmcia_dynid *dynid, *n;
267
268 spin_lock(&drv->dynids.lock);
269 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
270 list_del(&dynid->node);
271 kfree(dynid);
272 }
273 spin_unlock(&drv->dynids.lock);
274 }
275
276 static int
277 pcmcia_create_newid_file(struct pcmcia_driver *drv)
278 {
279 int error = 0;
280 if (drv->probe != NULL)
281 error = driver_create_file(&drv->drv, &driver_attr_new_id);
282 return error;
283 }
284
285
286 /**
287 * pcmcia_register_driver - register a PCMCIA driver with the bus core
288 * @driver: the &driver being registered
289 *
290 * Registers a PCMCIA driver with the PCMCIA bus core.
291 */
292 int pcmcia_register_driver(struct pcmcia_driver *driver)
293 {
294 int error;
295
296 if (!driver)
297 return -EINVAL;
298
299 pcmcia_check_driver(driver);
300
301 /* initialize common fields */
302 driver->drv.bus = &pcmcia_bus_type;
303 driver->drv.owner = driver->owner;
304 spin_lock_init(&driver->dynids.lock);
305 INIT_LIST_HEAD(&driver->dynids.list);
306
307 ds_dbg(3, "registering driver %s\n", driver->drv.name);
308
309 error = driver_register(&driver->drv);
310 if (error < 0)
311 return error;
312
313 error = pcmcia_create_newid_file(driver);
314 if (error)
315 driver_unregister(&driver->drv);
316
317 return error;
318 }
319 EXPORT_SYMBOL(pcmcia_register_driver);
320
321 /**
322 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
323 * @driver: the &driver being unregistered
324 */
325 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
326 {
327 ds_dbg(3, "unregistering driver %s\n", driver->drv.name);
328 driver_unregister(&driver->drv);
329 pcmcia_free_dynids(driver);
330 }
331 EXPORT_SYMBOL(pcmcia_unregister_driver);
332
333
334 /* pcmcia_device handling */
335
336 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
337 {
338 struct device *tmp_dev;
339 tmp_dev = get_device(&p_dev->dev);
340 if (!tmp_dev)
341 return NULL;
342 return to_pcmcia_dev(tmp_dev);
343 }
344
345 void pcmcia_put_dev(struct pcmcia_device *p_dev)
346 {
347 if (p_dev)
348 put_device(&p_dev->dev);
349 }
350
351 static void pcmcia_release_function(struct kref *ref)
352 {
353 struct config_t *c = container_of(ref, struct config_t, ref);
354 ds_dbg(1, "releasing config_t\n");
355 kfree(c);
356 }
357
358 static void pcmcia_release_dev(struct device *dev)
359 {
360 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
361 ds_dev_dbg(1, dev, "releasing device\n");
362 pcmcia_put_socket(p_dev->socket);
363 kfree(p_dev->devname);
364 kref_put(&p_dev->function_config->ref, pcmcia_release_function);
365 kfree(p_dev);
366 }
367
368 static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc)
369 {
370 if (!s->pcmcia_state.device_add_pending) {
371 ds_dev_dbg(1, &s->dev, "scheduling to add %s secondary"
372 " device to %d\n", mfc ? "mfc" : "pfc", s->sock);
373 s->pcmcia_state.device_add_pending = 1;
374 s->pcmcia_state.mfc_pfc = mfc;
375 schedule_work(&s->device_add);
376 }
377 return;
378 }
379
380 static int pcmcia_device_probe(struct device * dev)
381 {
382 struct pcmcia_device *p_dev;
383 struct pcmcia_driver *p_drv;
384 struct pcmcia_device_id *did;
385 struct pcmcia_socket *s;
386 cistpl_config_t cis_config;
387 int ret = 0;
388
389 dev = get_device(dev);
390 if (!dev)
391 return -ENODEV;
392
393 p_dev = to_pcmcia_dev(dev);
394 p_drv = to_pcmcia_drv(dev->driver);
395 s = p_dev->socket;
396
397 ds_dev_dbg(1, dev, "trying to bind to %s\n", p_drv->drv.name);
398
399 if ((!p_drv->probe) || (!p_dev->function_config) ||
400 (!try_module_get(p_drv->owner))) {
401 ret = -EINVAL;
402 goto put_dev;
403 }
404
405 /* set up some more device information */
406 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG,
407 &cis_config);
408 if (!ret) {
409 p_dev->conf.ConfigBase = cis_config.base;
410 p_dev->conf.Present = cis_config.rmask[0];
411 } else {
412 dev_printk(KERN_INFO, dev,
413 "pcmcia: could not parse base and rmask0 of CIS\n");
414 p_dev->conf.ConfigBase = 0;
415 p_dev->conf.Present = 0;
416 }
417
418 ret = p_drv->probe(p_dev);
419 if (ret) {
420 ds_dev_dbg(1, dev, "binding to %s failed with %d\n",
421 p_drv->drv.name, ret);
422 goto put_module;
423 }
424
425 /* handle pseudo multifunction devices:
426 * there are at most two pseudo multifunction devices.
427 * if we're matching against the first, schedule a
428 * call which will then check whether there are two
429 * pseudo devices, and if not, add the second one.
430 */
431 did = p_dev->dev.driver_data;
432 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
433 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
434 pcmcia_add_device_later(p_dev->socket, 0);
435
436 put_module:
437 if (ret)
438 module_put(p_drv->owner);
439 put_dev:
440 if (ret)
441 put_device(dev);
442 return (ret);
443 }
444
445
446 /*
447 * Removes a PCMCIA card from the device tree and socket list.
448 */
449 static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
450 {
451 struct pcmcia_device *p_dev;
452 struct pcmcia_device *tmp;
453 unsigned long flags;
454
455 ds_dev_dbg(2, leftover ? &leftover->dev : &s->dev,
456 "pcmcia_card_remove(%d) %s\n", s->sock,
457 leftover ? leftover->devname : "");
458
459 if (!leftover)
460 s->device_count = 0;
461 else
462 s->device_count = 1;
463
464 /* unregister all pcmcia_devices registered with this socket, except leftover */
465 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
466 if (p_dev == leftover)
467 continue;
468
469 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
470 list_del(&p_dev->socket_device_list);
471 p_dev->_removed=1;
472 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
473
474 ds_dev_dbg(2, &p_dev->dev, "unregistering device\n");
475 device_unregister(&p_dev->dev);
476 }
477
478 return;
479 }
480
481 static int pcmcia_device_remove(struct device * dev)
482 {
483 struct pcmcia_device *p_dev;
484 struct pcmcia_driver *p_drv;
485 struct pcmcia_device_id *did;
486 int i;
487
488 p_dev = to_pcmcia_dev(dev);
489 p_drv = to_pcmcia_drv(dev->driver);
490
491 ds_dev_dbg(1, dev, "removing device\n");
492
493 /* If we're removing the primary module driving a
494 * pseudo multi-function card, we need to unbind
495 * all devices
496 */
497 did = p_dev->dev.driver_data;
498 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
499 (p_dev->socket->device_count != 0) &&
500 (p_dev->device_no == 0))
501 pcmcia_card_remove(p_dev->socket, p_dev);
502
503 /* detach the "instance" */
504 if (!p_drv)
505 return 0;
506
507 if (p_drv->remove)
508 p_drv->remove(p_dev);
509
510 p_dev->dev_node = NULL;
511
512 /* check for proper unloading */
513 if (p_dev->_irq || p_dev->_io || p_dev->_locked)
514 dev_printk(KERN_INFO, dev,
515 "pcmcia: driver %s did not release config properly\n",
516 p_drv->drv.name);
517
518 for (i = 0; i < MAX_WIN; i++)
519 if (p_dev->_win & CLIENT_WIN_REQ(i))
520 dev_printk(KERN_INFO, dev,
521 "pcmcia: driver %s did not release window properly\n",
522 p_drv->drv.name);
523
524 /* references from pcmcia_probe_device */
525 pcmcia_put_dev(p_dev);
526 module_put(p_drv->owner);
527
528 return 0;
529 }
530
531
532 /*
533 * pcmcia_device_query -- determine information about a pcmcia device
534 */
535 static int pcmcia_device_query(struct pcmcia_device *p_dev)
536 {
537 cistpl_manfid_t manf_id;
538 cistpl_funcid_t func_id;
539 cistpl_vers_1_t *vers1;
540 unsigned int i;
541
542 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
543 if (!vers1)
544 return -ENOMEM;
545
546 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
547 CISTPL_MANFID, &manf_id)) {
548 p_dev->manf_id = manf_id.manf;
549 p_dev->card_id = manf_id.card;
550 p_dev->has_manf_id = 1;
551 p_dev->has_card_id = 1;
552 }
553
554 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
555 CISTPL_FUNCID, &func_id)) {
556 p_dev->func_id = func_id.func;
557 p_dev->has_func_id = 1;
558 } else {
559 /* rule of thumb: cards with no FUNCID, but with
560 * common memory device geometry information, are
561 * probably memory cards (from pcmcia-cs) */
562 cistpl_device_geo_t *devgeo;
563
564 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
565 if (!devgeo) {
566 kfree(vers1);
567 return -ENOMEM;
568 }
569 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
570 CISTPL_DEVICE_GEO, devgeo)) {
571 ds_dev_dbg(0, &p_dev->dev,
572 "mem device geometry probably means "
573 "FUNCID_MEMORY\n");
574 p_dev->func_id = CISTPL_FUNCID_MEMORY;
575 p_dev->has_func_id = 1;
576 }
577 kfree(devgeo);
578 }
579
580 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
581 vers1)) {
582 for (i=0; i < vers1->ns; i++) {
583 char *tmp;
584 unsigned int length;
585
586 tmp = vers1->str + vers1->ofs[i];
587
588 length = strlen(tmp) + 1;
589 if ((length < 2) || (length > 255))
590 continue;
591
592 p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
593 GFP_KERNEL);
594 if (!p_dev->prod_id[i])
595 continue;
596
597 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
598 tmp, length);
599 }
600 }
601
602 kfree(vers1);
603 return 0;
604 }
605
606
607 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
608 * Serializes pcmcia_device_add; will most likely be removed in future.
609 *
610 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
611 * won't work, this doesn't matter much at the moment: the driver core doesn't
612 * support it either.
613 */
614 static DEFINE_MUTEX(device_add_lock);
615
616 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
617 {
618 struct pcmcia_device *p_dev, *tmp_dev;
619 unsigned long flags;
620 int bus_id_len;
621
622 s = pcmcia_get_socket(s);
623 if (!s)
624 return NULL;
625
626 mutex_lock(&device_add_lock);
627
628 ds_dbg(3, "adding device to %d, function %d\n", s->sock, function);
629
630 /* max of 4 devices per card */
631 if (s->device_count == 4)
632 goto err_put;
633
634 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
635 if (!p_dev)
636 goto err_put;
637
638 p_dev->socket = s;
639 p_dev->device_no = (s->device_count++);
640 p_dev->func = function;
641
642 p_dev->dev.bus = &pcmcia_bus_type;
643 p_dev->dev.parent = s->dev.parent;
644 p_dev->dev.release = pcmcia_release_dev;
645 /* by default don't allow DMA */
646 p_dev->dma_mask = DMA_MASK_NONE;
647 p_dev->dev.dma_mask = &p_dev->dma_mask;
648 bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
649
650 p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL);
651 if (!p_dev->devname)
652 goto err_free;
653 sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id);
654 ds_dev_dbg(3, &p_dev->dev, "devname is %s\n", p_dev->devname);
655
656 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
657
658 /*
659 * p_dev->function_config must be the same for all card functions.
660 * Note that this is serialized by the device_add_lock, so that
661 * only one such struct will be created.
662 */
663 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
664 if (p_dev->func == tmp_dev->func) {
665 p_dev->function_config = tmp_dev->function_config;
666 kref_get(&p_dev->function_config->ref);
667 }
668
669 /* Add to the list in pcmcia_bus_socket */
670 list_add(&p_dev->socket_device_list, &s->devices_list);
671
672 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
673
674 if (!p_dev->function_config) {
675 ds_dev_dbg(3, &p_dev->dev, "creating config_t\n");
676 p_dev->function_config = kzalloc(sizeof(struct config_t),
677 GFP_KERNEL);
678 if (!p_dev->function_config)
679 goto err_unreg;
680 kref_init(&p_dev->function_config->ref);
681 }
682
683 dev_printk(KERN_NOTICE, &p_dev->dev,
684 "pcmcia: registering new device %s\n",
685 p_dev->devname);
686
687 pcmcia_device_query(p_dev);
688
689 if (device_register(&p_dev->dev))
690 goto err_unreg;
691
692 mutex_unlock(&device_add_lock);
693
694 return p_dev;
695
696 err_unreg:
697 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
698 list_del(&p_dev->socket_device_list);
699 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
700
701 err_free:
702 kfree(p_dev->devname);
703 kfree(p_dev);
704 s->device_count--;
705 err_put:
706 mutex_unlock(&device_add_lock);
707 pcmcia_put_socket(s);
708
709 return NULL;
710 }
711
712
713 static int pcmcia_card_add(struct pcmcia_socket *s)
714 {
715 cistpl_longlink_mfc_t mfc;
716 unsigned int no_funcs, i, no_chains;
717 int ret = 0;
718
719 if (!(s->resource_setup_done)) {
720 ds_dev_dbg(3, &s->dev,
721 "no resources available, delaying card_add\n");
722 return -EAGAIN; /* try again, but later... */
723 }
724
725 if (pcmcia_validate_mem(s)) {
726 ds_dev_dbg(3, &s->dev, "validating mem resources failed, "
727 "delaying card_add\n");
728 return -EAGAIN; /* try again, but later... */
729 }
730
731 ret = pccard_validate_cis(s, BIND_FN_ALL, &no_chains);
732 if (ret || !no_chains) {
733 ds_dev_dbg(0, &s->dev, "invalid CIS or invalid resources\n");
734 return -ENODEV;
735 }
736
737 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
738 no_funcs = mfc.nfn;
739 else
740 no_funcs = 1;
741 s->functions = no_funcs;
742
743 for (i=0; i < no_funcs; i++)
744 pcmcia_device_add(s, i);
745
746 return (ret);
747 }
748
749
750 static void pcmcia_delayed_add_device(struct work_struct *work)
751 {
752 struct pcmcia_socket *s =
753 container_of(work, struct pcmcia_socket, device_add);
754 ds_dev_dbg(1, &s->dev, "adding additional device to %d\n", s->sock);
755 pcmcia_device_add(s, s->pcmcia_state.mfc_pfc);
756 s->pcmcia_state.device_add_pending = 0;
757 s->pcmcia_state.mfc_pfc = 0;
758 }
759
760 static int pcmcia_requery(struct device *dev, void * _data)
761 {
762 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
763 if (!p_dev->dev.driver) {
764 ds_dev_dbg(1, dev, "update device information\n");
765 pcmcia_device_query(p_dev);
766 }
767
768 return 0;
769 }
770
771 static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis)
772 {
773 int no_devices = 0;
774 int ret = 0;
775 unsigned long flags;
776
777 /* must be called with skt_mutex held */
778 ds_dev_dbg(0, &skt->dev, "re-scanning socket %d\n", skt->sock);
779
780 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
781 if (list_empty(&skt->devices_list))
782 no_devices = 1;
783 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
784
785 /* If this is because of a CIS override, start over */
786 if (new_cis && !no_devices)
787 pcmcia_card_remove(skt, NULL);
788
789 /* if no devices were added for this socket yet because of
790 * missing resource information or other trouble, we need to
791 * do this now. */
792 if (no_devices || new_cis) {
793 ret = pcmcia_card_add(skt);
794 if (ret)
795 return;
796 }
797
798 /* some device information might have changed because of a CIS
799 * update or because we can finally read it correctly... so
800 * determine it again, overwriting old values if necessary. */
801 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
802
803 /* we re-scan all devices, not just the ones connected to this
804 * socket. This does not matter, though. */
805 ret = bus_rescan_devices(&pcmcia_bus_type);
806 if (ret)
807 printk(KERN_INFO "pcmcia: bus_rescan_devices failed\n");
808 }
809
810 #ifdef CONFIG_PCMCIA_LOAD_CIS
811
812 /**
813 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
814 * @dev: the pcmcia device which needs a CIS override
815 * @filename: requested filename in /lib/firmware/
816 *
817 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
818 * the one provided by the card is broken. The firmware files reside in
819 * /lib/firmware/ in userspace.
820 */
821 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
822 {
823 struct pcmcia_socket *s = dev->socket;
824 const struct firmware *fw;
825 char path[FIRMWARE_NAME_MAX];
826 int ret = -ENOMEM;
827 int no_funcs;
828 int old_funcs;
829 cistpl_longlink_mfc_t mfc;
830
831 if (!filename)
832 return -EINVAL;
833
834 ds_dev_dbg(1, &dev->dev, "trying to load CIS file %s\n", filename);
835
836 if (strlen(filename) > (FIRMWARE_NAME_MAX - 1)) {
837 dev_printk(KERN_WARNING, &dev->dev,
838 "pcmcia: CIS filename is too long [%s]\n",
839 filename);
840 return -EINVAL;
841 }
842
843 snprintf(path, sizeof(path), "%s", filename);
844
845 if (request_firmware(&fw, path, &dev->dev) == 0) {
846 if (fw->size >= CISTPL_MAX_CIS_SIZE) {
847 ret = -EINVAL;
848 dev_printk(KERN_ERR, &dev->dev,
849 "pcmcia: CIS override is too big\n");
850 goto release;
851 }
852
853 if (!pcmcia_replace_cis(s, fw->data, fw->size))
854 ret = 0;
855 else {
856 dev_printk(KERN_ERR, &dev->dev,
857 "pcmcia: CIS override failed\n");
858 goto release;
859 }
860
861
862 /* update information */
863 pcmcia_device_query(dev);
864
865 /* does this cis override add or remove functions? */
866 old_funcs = s->functions;
867
868 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
869 no_funcs = mfc.nfn;
870 else
871 no_funcs = 1;
872 s->functions = no_funcs;
873
874 if (old_funcs > no_funcs)
875 pcmcia_card_remove(s, dev);
876 else if (no_funcs > old_funcs)
877 pcmcia_add_device_later(s, 1);
878 }
879 release:
880 release_firmware(fw);
881
882 return (ret);
883 }
884
885 #else /* !CONFIG_PCMCIA_LOAD_CIS */
886
887 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
888 {
889 return -ENODEV;
890 }
891
892 #endif
893
894
895 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
896 struct pcmcia_device_id *did)
897 {
898 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
899 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
900 return 0;
901 }
902
903 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
904 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
905 return 0;
906 }
907
908 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
909 if (dev->func != did->function)
910 return 0;
911 }
912
913 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
914 if (!dev->prod_id[0])
915 return 0;
916 if (strcmp(did->prod_id[0], dev->prod_id[0]))
917 return 0;
918 }
919
920 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
921 if (!dev->prod_id[1])
922 return 0;
923 if (strcmp(did->prod_id[1], dev->prod_id[1]))
924 return 0;
925 }
926
927 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
928 if (!dev->prod_id[2])
929 return 0;
930 if (strcmp(did->prod_id[2], dev->prod_id[2]))
931 return 0;
932 }
933
934 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
935 if (!dev->prod_id[3])
936 return 0;
937 if (strcmp(did->prod_id[3], dev->prod_id[3]))
938 return 0;
939 }
940
941 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
942 if (dev->device_no != did->device_no)
943 return 0;
944 }
945
946 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
947 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
948 return 0;
949
950 /* if this is a pseudo-multi-function device,
951 * we need explicit matches */
952 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
953 return 0;
954 if (dev->device_no)
955 return 0;
956
957 /* also, FUNC_ID matching needs to be activated by userspace
958 * after it has re-checked that there is no possible module
959 * with a prod_id/manf_id/card_id match.
960 */
961 ds_dev_dbg(0, &dev->dev,
962 "skipping FUNC_ID match until userspace interaction\n");
963 if (!dev->allow_func_id_match)
964 return 0;
965 }
966
967 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
968 ds_dev_dbg(0, &dev->dev, "device needs a fake CIS\n");
969 if (!dev->socket->fake_cis)
970 pcmcia_load_firmware(dev, did->cisfile);
971
972 if (!dev->socket->fake_cis)
973 return 0;
974 }
975
976 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
977 int i;
978 for (i=0; i<4; i++)
979 if (dev->prod_id[i])
980 return 0;
981 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
982 return 0;
983 }
984
985 dev->dev.driver_data = (void *) did;
986
987 return 1;
988 }
989
990
991 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
992 struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
993 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
994 struct pcmcia_device_id *did = p_drv->id_table;
995 struct pcmcia_dynid *dynid;
996
997 /* match dynamic devices first */
998 spin_lock(&p_drv->dynids.lock);
999 list_for_each_entry(dynid, &p_drv->dynids.list, node) {
1000 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name);
1001 if (pcmcia_devmatch(p_dev, &dynid->id)) {
1002 ds_dev_dbg(0, dev, "matched to %s\n", drv->name);
1003 spin_unlock(&p_drv->dynids.lock);
1004 return 1;
1005 }
1006 }
1007 spin_unlock(&p_drv->dynids.lock);
1008
1009 #ifdef CONFIG_PCMCIA_IOCTL
1010 /* matching by cardmgr */
1011 if (p_dev->cardmgr == p_drv) {
1012 ds_dev_dbg(0, dev, "cardmgr matched to %s\n", drv->name);
1013 return 1;
1014 }
1015 #endif
1016
1017 while (did && did->match_flags) {
1018 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name);
1019 if (pcmcia_devmatch(p_dev, did)) {
1020 ds_dev_dbg(0, dev, "matched to %s\n", drv->name);
1021 return 1;
1022 }
1023 did++;
1024 }
1025
1026 return 0;
1027 }
1028
1029 #ifdef CONFIG_HOTPLUG
1030
1031 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
1032 {
1033 struct pcmcia_device *p_dev;
1034 int i;
1035 u32 hash[4] = { 0, 0, 0, 0};
1036
1037 if (!dev)
1038 return -ENODEV;
1039
1040 p_dev = to_pcmcia_dev(dev);
1041
1042 /* calculate hashes */
1043 for (i=0; i<4; i++) {
1044 if (!p_dev->prod_id[i])
1045 continue;
1046 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
1047 }
1048
1049 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock))
1050 return -ENOMEM;
1051
1052 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no))
1053 return -ENOMEM;
1054
1055 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1056 "pa%08Xpb%08Xpc%08Xpd%08X",
1057 p_dev->has_manf_id ? p_dev->manf_id : 0,
1058 p_dev->has_card_id ? p_dev->card_id : 0,
1059 p_dev->has_func_id ? p_dev->func_id : 0,
1060 p_dev->func,
1061 p_dev->device_no,
1062 hash[0],
1063 hash[1],
1064 hash[2],
1065 hash[3]))
1066 return -ENOMEM;
1067
1068 return 0;
1069 }
1070
1071 #else
1072
1073 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
1074 {
1075 return -ENODEV;
1076 }
1077
1078 #endif
1079
1080 /************************ runtime PM support ***************************/
1081
1082 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state);
1083 static int pcmcia_dev_resume(struct device *dev);
1084
1085 static int runtime_suspend(struct device *dev)
1086 {
1087 int rc;
1088
1089 down(&dev->sem);
1090 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND);
1091 up(&dev->sem);
1092 return rc;
1093 }
1094
1095 static void runtime_resume(struct device *dev)
1096 {
1097 int rc;
1098
1099 down(&dev->sem);
1100 rc = pcmcia_dev_resume(dev);
1101 up(&dev->sem);
1102 }
1103
1104 /************************ per-device sysfs output ***************************/
1105
1106 #define pcmcia_device_attr(field, test, format) \
1107 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1108 { \
1109 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1110 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
1111 }
1112
1113 #define pcmcia_device_stringattr(name, field) \
1114 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1115 { \
1116 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1117 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
1118 }
1119
1120 pcmcia_device_attr(func, socket, "0x%02x\n");
1121 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
1122 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
1123 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
1124 pcmcia_device_stringattr(prod_id1, prod_id[0]);
1125 pcmcia_device_stringattr(prod_id2, prod_id[1]);
1126 pcmcia_device_stringattr(prod_id3, prod_id[2]);
1127 pcmcia_device_stringattr(prod_id4, prod_id[3]);
1128
1129
1130 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf)
1131 {
1132 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1133
1134 if (p_dev->suspended)
1135 return sprintf(buf, "off\n");
1136 else
1137 return sprintf(buf, "on\n");
1138 }
1139
1140 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr,
1141 const char *buf, size_t count)
1142 {
1143 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1144 int ret = 0;
1145
1146 if (!count)
1147 return -EINVAL;
1148
1149 if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
1150 ret = runtime_suspend(dev);
1151 else if (p_dev->suspended && !strncmp(buf, "on", 2))
1152 runtime_resume(dev);
1153
1154 return ret ? ret : count;
1155 }
1156
1157
1158 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1159 {
1160 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1161 int i;
1162 u32 hash[4] = { 0, 0, 0, 0};
1163
1164 /* calculate hashes */
1165 for (i=0; i<4; i++) {
1166 if (!p_dev->prod_id[i])
1167 continue;
1168 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i]));
1169 }
1170 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1171 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1172 p_dev->has_manf_id ? p_dev->manf_id : 0,
1173 p_dev->has_card_id ? p_dev->card_id : 0,
1174 p_dev->has_func_id ? p_dev->func_id : 0,
1175 p_dev->func, p_dev->device_no,
1176 hash[0], hash[1], hash[2], hash[3]);
1177 }
1178
1179 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
1180 struct device_attribute *attr, const char *buf, size_t count)
1181 {
1182 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1183 int ret;
1184
1185 if (!count)
1186 return -EINVAL;
1187
1188 mutex_lock(&p_dev->socket->skt_mutex);
1189 p_dev->allow_func_id_match = 1;
1190 mutex_unlock(&p_dev->socket->skt_mutex);
1191
1192 ret = bus_rescan_devices(&pcmcia_bus_type);
1193 if (ret)
1194 printk(KERN_INFO "pcmcia: bus_rescan_devices failed after "
1195 "allowing func_id matches\n");
1196
1197 return count;
1198 }
1199
1200 static struct device_attribute pcmcia_dev_attrs[] = {
1201 __ATTR(function, 0444, func_show, NULL),
1202 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state),
1203 __ATTR_RO(func_id),
1204 __ATTR_RO(manf_id),
1205 __ATTR_RO(card_id),
1206 __ATTR_RO(prod_id1),
1207 __ATTR_RO(prod_id2),
1208 __ATTR_RO(prod_id3),
1209 __ATTR_RO(prod_id4),
1210 __ATTR_RO(modalias),
1211 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
1212 __ATTR_NULL,
1213 };
1214
1215 /* PM support, also needed for reset */
1216
1217 static int pcmcia_dev_suspend(struct device * dev, pm_message_t state)
1218 {
1219 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1220 struct pcmcia_driver *p_drv = NULL;
1221 int ret = 0;
1222
1223 if (p_dev->suspended)
1224 return 0;
1225
1226 ds_dev_dbg(2, dev, "suspending\n");
1227
1228 if (dev->driver)
1229 p_drv = to_pcmcia_drv(dev->driver);
1230
1231 if (!p_drv)
1232 goto out;
1233
1234 if (p_drv->suspend) {
1235 ret = p_drv->suspend(p_dev);
1236 if (ret) {
1237 dev_printk(KERN_ERR, dev,
1238 "pcmcia: device %s (driver %s) did "
1239 "not want to go to sleep (%d)\n",
1240 p_dev->devname, p_drv->drv.name, ret);
1241 goto out;
1242 }
1243 }
1244
1245 if (p_dev->device_no == p_dev->func) {
1246 ds_dev_dbg(2, dev, "releasing configuration\n");
1247 pcmcia_release_configuration(p_dev);
1248 }
1249
1250 out:
1251 if (!ret)
1252 p_dev->suspended = 1;
1253 return ret;
1254 }
1255
1256
1257 static int pcmcia_dev_resume(struct device * dev)
1258 {
1259 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1260 struct pcmcia_driver *p_drv = NULL;
1261 int ret = 0;
1262
1263 if (!p_dev->suspended)
1264 return 0;
1265
1266 ds_dev_dbg(2, dev, "resuming\n");
1267
1268 if (dev->driver)
1269 p_drv = to_pcmcia_drv(dev->driver);
1270
1271 if (!p_drv)
1272 goto out;
1273
1274 if (p_dev->device_no == p_dev->func) {
1275 ds_dev_dbg(2, dev, "requesting configuration\n");
1276 ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
1277 if (ret)
1278 goto out;
1279 }
1280
1281 if (p_drv->resume)
1282 ret = p_drv->resume(p_dev);
1283
1284 out:
1285 if (!ret)
1286 p_dev->suspended = 0;
1287 return ret;
1288 }
1289
1290
1291 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
1292 {
1293 struct pcmcia_socket *skt = _data;
1294 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1295
1296 if (p_dev->socket != skt || p_dev->suspended)
1297 return 0;
1298
1299 return runtime_suspend(dev);
1300 }
1301
1302 static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
1303 {
1304 struct pcmcia_socket *skt = _data;
1305 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1306
1307 if (p_dev->socket != skt || !p_dev->suspended)
1308 return 0;
1309
1310 runtime_resume(dev);
1311
1312 return 0;
1313 }
1314
1315 static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1316 {
1317 ds_dev_dbg(2, &skt->dev, "resuming socket %d\n", skt->sock);
1318 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1319 return 0;
1320 }
1321
1322 static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1323 {
1324 ds_dev_dbg(2, &skt->dev, "suspending socket %d\n", skt->sock);
1325 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1326 pcmcia_bus_suspend_callback)) {
1327 pcmcia_bus_resume(skt);
1328 return -EIO;
1329 }
1330 return 0;
1331 }
1332
1333
1334 /*======================================================================
1335
1336 The card status event handler.
1337
1338 ======================================================================*/
1339
1340 /* Normally, the event is passed to individual drivers after
1341 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
1342 * is inversed to maintain historic compatibility.
1343 */
1344
1345 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
1346 {
1347 struct pcmcia_socket *s = pcmcia_get_socket(skt);
1348
1349 if (!s) {
1350 dev_printk(KERN_ERR, &skt->dev,
1351 "PCMCIA obtaining reference to socket " \
1352 "failed, event 0x%x lost!\n", event);
1353 return -ENODEV;
1354 }
1355
1356 ds_dev_dbg(1, &skt->dev, "ds_event(0x%06x, %d, 0x%p)\n",
1357 event, priority, skt);
1358
1359 switch (event) {
1360 case CS_EVENT_CARD_REMOVAL:
1361 s->pcmcia_state.present = 0;
1362 pcmcia_card_remove(skt, NULL);
1363 handle_event(skt, event);
1364 break;
1365
1366 case CS_EVENT_CARD_INSERTION:
1367 s->pcmcia_state.present = 1;
1368 pcmcia_card_add(skt);
1369 handle_event(skt, event);
1370 break;
1371
1372 case CS_EVENT_EJECTION_REQUEST:
1373 break;
1374
1375 case CS_EVENT_PM_SUSPEND:
1376 case CS_EVENT_PM_RESUME:
1377 case CS_EVENT_RESET_PHYSICAL:
1378 case CS_EVENT_CARD_RESET:
1379 default:
1380 handle_event(skt, event);
1381 break;
1382 }
1383
1384 pcmcia_put_socket(s);
1385
1386 return 0;
1387 } /* ds_event */
1388
1389
1390 struct pcmcia_device * pcmcia_dev_present(struct pcmcia_device *_p_dev)
1391 {
1392 struct pcmcia_device *p_dev;
1393 struct pcmcia_device *ret = NULL;
1394
1395 p_dev = pcmcia_get_dev(_p_dev);
1396 if (!p_dev)
1397 return NULL;
1398
1399 if (!p_dev->socket->pcmcia_state.present)
1400 goto out;
1401
1402 if (p_dev->_removed)
1403 goto out;
1404
1405 if (p_dev->suspended)
1406 goto out;
1407
1408 ret = p_dev;
1409 out:
1410 pcmcia_put_dev(p_dev);
1411 return ret;
1412 }
1413 EXPORT_SYMBOL(pcmcia_dev_present);
1414
1415
1416 static struct pcmcia_callback pcmcia_bus_callback = {
1417 .owner = THIS_MODULE,
1418 .event = ds_event,
1419 .requery = pcmcia_bus_rescan,
1420 .suspend = pcmcia_bus_suspend,
1421 .resume = pcmcia_bus_resume,
1422 };
1423
1424 static int __devinit pcmcia_bus_add_socket(struct device *dev,
1425 struct class_interface *class_intf)
1426 {
1427 struct pcmcia_socket *socket = dev_get_drvdata(dev);
1428 int ret;
1429
1430 socket = pcmcia_get_socket(socket);
1431 if (!socket) {
1432 dev_printk(KERN_ERR, dev,
1433 "PCMCIA obtaining reference to socket failed\n");
1434 return -ENODEV;
1435 }
1436
1437 /*
1438 * Ugly. But we want to wait for the socket threads to have started up.
1439 * We really should let the drivers themselves drive some of this..
1440 */
1441 msleep(250);
1442
1443 #ifdef CONFIG_PCMCIA_IOCTL
1444 init_waitqueue_head(&socket->queue);
1445 #endif
1446 INIT_LIST_HEAD(&socket->devices_list);
1447 INIT_WORK(&socket->device_add, pcmcia_delayed_add_device);
1448 memset(&socket->pcmcia_state, 0, sizeof(u8));
1449 socket->device_count = 0;
1450
1451 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1452 if (ret) {
1453 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
1454 pcmcia_put_socket(socket);
1455 return (ret);
1456 }
1457
1458 return 0;
1459 }
1460
1461 static void pcmcia_bus_remove_socket(struct device *dev,
1462 struct class_interface *class_intf)
1463 {
1464 struct pcmcia_socket *socket = dev_get_drvdata(dev);
1465
1466 if (!socket)
1467 return;
1468
1469 socket->pcmcia_state.dead = 1;
1470 pccard_register_pcmcia(socket, NULL);
1471
1472 /* unregister any unbound devices */
1473 mutex_lock(&socket->skt_mutex);
1474 pcmcia_card_remove(socket, NULL);
1475 mutex_unlock(&socket->skt_mutex);
1476
1477 pcmcia_put_socket(socket);
1478
1479 return;
1480 }
1481
1482
1483 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1484 static struct class_interface pcmcia_bus_interface __refdata = {
1485 .class = &pcmcia_socket_class,
1486 .add_dev = &pcmcia_bus_add_socket,
1487 .remove_dev = &pcmcia_bus_remove_socket,
1488 };
1489
1490
1491 struct bus_type pcmcia_bus_type = {
1492 .name = "pcmcia",
1493 .uevent = pcmcia_bus_uevent,
1494 .match = pcmcia_bus_match,
1495 .dev_attrs = pcmcia_dev_attrs,
1496 .probe = pcmcia_device_probe,
1497 .remove = pcmcia_device_remove,
1498 .suspend = pcmcia_dev_suspend,
1499 .resume = pcmcia_dev_resume,
1500 };
1501
1502
1503 static int __init init_pcmcia_bus(void)
1504 {
1505 int ret;
1506
1507 spin_lock_init(&pcmcia_dev_list_lock);
1508
1509 ret = bus_register(&pcmcia_bus_type);
1510 if (ret < 0) {
1511 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret);
1512 return ret;
1513 }
1514 ret = class_interface_register(&pcmcia_bus_interface);
1515 if (ret < 0) {
1516 printk(KERN_WARNING
1517 "pcmcia: class_interface_register error: %d\n", ret);
1518 bus_unregister(&pcmcia_bus_type);
1519 return ret;
1520 }
1521
1522 pcmcia_setup_ioctl();
1523
1524 return 0;
1525 }
1526 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1527 * pcmcia_socket_class is already registered */
1528
1529
1530 static void __exit exit_pcmcia_bus(void)
1531 {
1532 pcmcia_cleanup_ioctl();
1533
1534 class_interface_unregister(&pcmcia_bus_interface);
1535
1536 bus_unregister(&pcmcia_bus_type);
1537 }
1538 module_exit(exit_pcmcia_bus);
1539
1540
1541 MODULE_ALIAS("ds");
CJK support for tty framebuffer vt