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13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/errno.h>
17#include <linux/list.h>
18#include <linux/delay.h>
19#include <linux/workqueue.h>
20#include <linux/crc32.h>
21#include <linux/firmware.h>
22#include <linux/kref.h>
23#include <linux/dma-mapping.h>
24#include <linux/slab.h>
25
26#include <pcmcia/cistpl.h>
27#include <pcmcia/ds.h>
28#include <pcmcia/ss.h>
29
30#include "cs_internal.h"
31
32
33
34
35
36MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
37MODULE_DESCRIPTION("PCMCIA Driver Services");
38MODULE_LICENSE("GPL");
39
40
41
42
43static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
44{
45 const struct pcmcia_device_id *did = p_drv->id_table;
46 unsigned int i;
47 u32 hash;
48
49 if (!p_drv->probe || !p_drv->remove)
50 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
51 "function\n", p_drv->name);
52
53 while (did && did->match_flags) {
54 for (i = 0; i < 4; i++) {
55 if (!did->prod_id[i])
56 continue;
57
58 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
59 if (hash == did->prod_id_hash[i])
60 continue;
61
62 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
63 "product string \"%s\": is 0x%x, should "
64 "be 0x%x\n", p_drv->name, did->prod_id[i],
65 did->prod_id_hash[i], hash);
66 printk(KERN_DEBUG "pcmcia: see "
67 "Documentation/pcmcia/devicetable.rst for "
68 "details\n");
69 }
70 did++;
71 }
72
73 return;
74}
75
76
77
78
79
80struct pcmcia_dynid {
81 struct list_head node;
82 struct pcmcia_device_id id;
83};
84
85
86
87
88
89
90
91
92
93
94static ssize_t
95new_id_store(struct device_driver *driver, const char *buf, size_t count)
96{
97 struct pcmcia_dynid *dynid;
98 struct pcmcia_driver *pdrv = to_pcmcia_drv(driver);
99 __u16 match_flags, manf_id, card_id;
100 __u8 func_id, function, device_no;
101 __u32 prod_id_hash[4] = {0, 0, 0, 0};
102 int fields = 0;
103 int retval = 0;
104
105 fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
106 &match_flags, &manf_id, &card_id, &func_id, &function, &device_no,
107 &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]);
108 if (fields < 6)
109 return -EINVAL;
110
111 dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL);
112 if (!dynid)
113 return -ENOMEM;
114
115 dynid->id.match_flags = match_flags;
116 dynid->id.manf_id = manf_id;
117 dynid->id.card_id = card_id;
118 dynid->id.func_id = func_id;
119 dynid->id.function = function;
120 dynid->id.device_no = device_no;
121 memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4);
122
123 mutex_lock(&pdrv->dynids.lock);
124 list_add_tail(&dynid->node, &pdrv->dynids.list);
125 mutex_unlock(&pdrv->dynids.lock);
126
127 retval = driver_attach(&pdrv->drv);
128
129 if (retval)
130 return retval;
131 return count;
132}
133static DRIVER_ATTR_WO(new_id);
134
135static void
136pcmcia_free_dynids(struct pcmcia_driver *drv)
137{
138 struct pcmcia_dynid *dynid, *n;
139
140 mutex_lock(&drv->dynids.lock);
141 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
142 list_del(&dynid->node);
143 kfree(dynid);
144 }
145 mutex_unlock(&drv->dynids.lock);
146}
147
148static int
149pcmcia_create_newid_file(struct pcmcia_driver *drv)
150{
151 int error = 0;
152 if (drv->probe != NULL)
153 error = driver_create_file(&drv->drv, &driver_attr_new_id);
154 return error;
155}
156
157static void
158pcmcia_remove_newid_file(struct pcmcia_driver *drv)
159{
160 driver_remove_file(&drv->drv, &driver_attr_new_id);
161}
162
163
164
165
166
167
168
169int pcmcia_register_driver(struct pcmcia_driver *driver)
170{
171 int error;
172
173 if (!driver)
174 return -EINVAL;
175
176 pcmcia_check_driver(driver);
177
178
179 driver->drv.bus = &pcmcia_bus_type;
180 driver->drv.owner = driver->owner;
181 driver->drv.name = driver->name;
182 mutex_init(&driver->dynids.lock);
183 INIT_LIST_HEAD(&driver->dynids.list);
184
185 pr_debug("registering driver %s\n", driver->name);
186
187 error = driver_register(&driver->drv);
188 if (error < 0)
189 return error;
190
191 error = pcmcia_create_newid_file(driver);
192 if (error)
193 driver_unregister(&driver->drv);
194
195 return error;
196}
197EXPORT_SYMBOL(pcmcia_register_driver);
198
199
200
201
202
203void pcmcia_unregister_driver(struct pcmcia_driver *driver)
204{
205 pr_debug("unregistering driver %s\n", driver->name);
206 pcmcia_remove_newid_file(driver);
207 driver_unregister(&driver->drv);
208 pcmcia_free_dynids(driver);
209}
210EXPORT_SYMBOL(pcmcia_unregister_driver);
211
212
213
214
215static struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev)
216{
217 struct device *tmp_dev;
218 tmp_dev = get_device(&p_dev->dev);
219 if (!tmp_dev)
220 return NULL;
221 return to_pcmcia_dev(tmp_dev);
222}
223
224static void pcmcia_put_dev(struct pcmcia_device *p_dev)
225{
226 if (p_dev)
227 put_device(&p_dev->dev);
228}
229
230static void pcmcia_release_function(struct kref *ref)
231{
232 struct config_t *c = container_of(ref, struct config_t, ref);
233 pr_debug("releasing config_t\n");
234 kfree(c);
235}
236
237static void pcmcia_release_dev(struct device *dev)
238{
239 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
240 int i;
241 dev_dbg(dev, "releasing device\n");
242 pcmcia_put_socket(p_dev->socket);
243 for (i = 0; i < 4; i++)
244 kfree(p_dev->prod_id[i]);
245 kfree(p_dev->devname);
246 kref_put(&p_dev->function_config->ref, pcmcia_release_function);
247 kfree(p_dev);
248}
249
250
251static int pcmcia_device_probe(struct device *dev)
252{
253 struct pcmcia_device *p_dev;
254 struct pcmcia_driver *p_drv;
255 struct pcmcia_socket *s;
256 cistpl_config_t cis_config;
257 int ret = 0;
258
259 dev = get_device(dev);
260 if (!dev)
261 return -ENODEV;
262
263 p_dev = to_pcmcia_dev(dev);
264 p_drv = to_pcmcia_drv(dev->driver);
265 s = p_dev->socket;
266
267 dev_dbg(dev, "trying to bind to %s\n", p_drv->name);
268
269 if ((!p_drv->probe) || (!p_dev->function_config) ||
270 (!try_module_get(p_drv->owner))) {
271 ret = -EINVAL;
272 goto put_dev;
273 }
274
275
276 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG,
277 &cis_config);
278 if (!ret) {
279 p_dev->config_base = cis_config.base;
280 p_dev->config_regs = cis_config.rmask[0];
281 dev_dbg(dev, "base %x, regs %x", p_dev->config_base,
282 p_dev->config_regs);
283 } else {
284 dev_info(dev,
285 "pcmcia: could not parse base and rmask0 of CIS\n");
286 p_dev->config_base = 0;
287 p_dev->config_regs = 0;
288 }
289
290 ret = p_drv->probe(p_dev);
291 if (ret) {
292 dev_dbg(dev, "binding to %s failed with %d\n",
293 p_drv->name, ret);
294 goto put_module;
295 }
296 dev_dbg(dev, "%s bound: Vpp %d.%d, idx %x, IRQ %d", p_drv->name,
297 p_dev->vpp/10, p_dev->vpp%10, p_dev->config_index, p_dev->irq);
298 dev_dbg(dev, "resources: ioport %pR %pR iomem %pR %pR %pR",
299 p_dev->resource[0], p_dev->resource[1], p_dev->resource[2],
300 p_dev->resource[3], p_dev->resource[4]);
301
302 mutex_lock(&s->ops_mutex);
303 if ((s->pcmcia_pfc) &&
304 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
305 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
306 mutex_unlock(&s->ops_mutex);
307
308put_module:
309 if (ret)
310 module_put(p_drv->owner);
311put_dev:
312 if (ret)
313 put_device(dev);
314 return ret;
315}
316
317
318
319
320
321static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
322{
323 struct pcmcia_device *p_dev;
324 struct pcmcia_device *tmp;
325
326 dev_dbg(leftover ? &leftover->dev : &s->dev,
327 "pcmcia_card_remove(%d) %s\n", s->sock,
328 leftover ? leftover->devname : "");
329
330 mutex_lock(&s->ops_mutex);
331 if (!leftover)
332 s->device_count = 0;
333 else
334 s->device_count = 1;
335 mutex_unlock(&s->ops_mutex);
336
337
338 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
339 if (p_dev == leftover)
340 continue;
341
342 mutex_lock(&s->ops_mutex);
343 list_del(&p_dev->socket_device_list);
344 mutex_unlock(&s->ops_mutex);
345
346 dev_dbg(&p_dev->dev, "unregistering device\n");
347 device_unregister(&p_dev->dev);
348 }
349
350 return;
351}
352
353static void pcmcia_device_remove(struct device *dev)
354{
355 struct pcmcia_device *p_dev;
356 struct pcmcia_driver *p_drv;
357 int i;
358
359 p_dev = to_pcmcia_dev(dev);
360 p_drv = to_pcmcia_drv(dev->driver);
361
362 dev_dbg(dev, "removing device\n");
363
364
365
366
367
368 if ((p_dev->socket->pcmcia_pfc) &&
369 (p_dev->socket->device_count > 0) &&
370 (p_dev->device_no == 0))
371 pcmcia_card_remove(p_dev->socket, p_dev);
372
373
374 if (p_drv->remove)
375 p_drv->remove(p_dev);
376
377
378 if (p_dev->_irq || p_dev->_io || p_dev->_locked)
379 dev_info(dev,
380 "pcmcia: driver %s did not release config properly\n",
381 p_drv->name);
382
383 for (i = 0; i < MAX_WIN; i++)
384 if (p_dev->_win & CLIENT_WIN_REQ(i))
385 dev_info(dev,
386 "pcmcia: driver %s did not release window properly\n",
387 p_drv->name);
388
389
390 pcmcia_put_dev(p_dev);
391 module_put(p_drv->owner);
392}
393
394
395
396
397
398static int pcmcia_device_query(struct pcmcia_device *p_dev)
399{
400 cistpl_manfid_t manf_id;
401 cistpl_funcid_t func_id;
402 cistpl_vers_1_t *vers1;
403 unsigned int i;
404
405 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
406 if (!vers1)
407 return -ENOMEM;
408
409 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL,
410 CISTPL_MANFID, &manf_id)) {
411 mutex_lock(&p_dev->socket->ops_mutex);
412 p_dev->manf_id = manf_id.manf;
413 p_dev->card_id = manf_id.card;
414 p_dev->has_manf_id = 1;
415 p_dev->has_card_id = 1;
416 mutex_unlock(&p_dev->socket->ops_mutex);
417 }
418
419 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
420 CISTPL_FUNCID, &func_id)) {
421 mutex_lock(&p_dev->socket->ops_mutex);
422 p_dev->func_id = func_id.func;
423 p_dev->has_func_id = 1;
424 mutex_unlock(&p_dev->socket->ops_mutex);
425 } else {
426
427
428
429 cistpl_device_geo_t *devgeo;
430
431 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
432 if (!devgeo) {
433 kfree(vers1);
434 return -ENOMEM;
435 }
436 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
437 CISTPL_DEVICE_GEO, devgeo)) {
438 dev_dbg(&p_dev->dev,
439 "mem device geometry probably means "
440 "FUNCID_MEMORY\n");
441 mutex_lock(&p_dev->socket->ops_mutex);
442 p_dev->func_id = CISTPL_FUNCID_MEMORY;
443 p_dev->has_func_id = 1;
444 mutex_unlock(&p_dev->socket->ops_mutex);
445 }
446 kfree(devgeo);
447 }
448
449 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1,
450 vers1)) {
451 mutex_lock(&p_dev->socket->ops_mutex);
452 for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) {
453 char *tmp;
454 unsigned int length;
455 char *new;
456
457 tmp = vers1->str + vers1->ofs[i];
458
459 length = strlen(tmp) + 1;
460 if ((length < 2) || (length > 255))
461 continue;
462
463 new = kstrdup(tmp, GFP_KERNEL);
464 if (!new)
465 continue;
466
467 tmp = p_dev->prod_id[i];
468 p_dev->prod_id[i] = new;
469 kfree(tmp);
470 }
471 mutex_unlock(&p_dev->socket->ops_mutex);
472 }
473
474 kfree(vers1);
475 return 0;
476}
477
478
479static struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s,
480 unsigned int function)
481{
482 struct pcmcia_device *p_dev, *tmp_dev;
483 int i;
484
485 s = pcmcia_get_socket(s);
486 if (!s)
487 return NULL;
488
489 pr_debug("adding device to %d, function %d\n", s->sock, function);
490
491 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
492 if (!p_dev)
493 goto err_put;
494
495 mutex_lock(&s->ops_mutex);
496 p_dev->device_no = (s->device_count++);
497 mutex_unlock(&s->ops_mutex);
498
499
500 if ((p_dev->device_no >= 2) && (function == 0))
501 goto err_free;
502
503
504 if (p_dev->device_no >= 4)
505 goto err_free;
506
507 p_dev->socket = s;
508 p_dev->func = function;
509
510 p_dev->dev.bus = &pcmcia_bus_type;
511 p_dev->dev.parent = s->dev.parent;
512 p_dev->dev.release = pcmcia_release_dev;
513
514 p_dev->dma_mask = 0;
515 p_dev->dev.dma_mask = &p_dev->dma_mask;
516 dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no);
517 if (!dev_name(&p_dev->dev))
518 goto err_free;
519 p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev));
520 if (!p_dev->devname)
521 goto err_free;
522 dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname);
523
524 mutex_lock(&s->ops_mutex);
525
526
527
528
529
530
531 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
532 if (p_dev->func == tmp_dev->func) {
533 p_dev->function_config = tmp_dev->function_config;
534 p_dev->irq = tmp_dev->irq;
535 kref_get(&p_dev->function_config->ref);
536 }
537
538
539 list_add(&p_dev->socket_device_list, &s->devices_list);
540
541 if (pcmcia_setup_irq(p_dev))
542 dev_warn(&p_dev->dev,
543 "IRQ setup failed -- device might not work\n");
544
545 if (!p_dev->function_config) {
546 config_t *c;
547 dev_dbg(&p_dev->dev, "creating config_t\n");
548 c = kzalloc(sizeof(struct config_t), GFP_KERNEL);
549 if (!c) {
550 mutex_unlock(&s->ops_mutex);
551 goto err_unreg;
552 }
553 p_dev->function_config = c;
554 kref_init(&c->ref);
555 for (i = 0; i < MAX_IO_WIN; i++) {
556 c->io[i].name = p_dev->devname;
557 c->io[i].flags = IORESOURCE_IO;
558 }
559 for (i = 0; i < MAX_WIN; i++) {
560 c->mem[i].name = p_dev->devname;
561 c->mem[i].flags = IORESOURCE_MEM;
562 }
563 }
564 for (i = 0; i < MAX_IO_WIN; i++)
565 p_dev->resource[i] = &p_dev->function_config->io[i];
566 for (; i < (MAX_IO_WIN + MAX_WIN); i++)
567 p_dev->resource[i] = &p_dev->function_config->mem[i-MAX_IO_WIN];
568
569 mutex_unlock(&s->ops_mutex);
570
571 dev_notice(&p_dev->dev, "pcmcia: registering new device %s (IRQ: %d)\n",
572 p_dev->devname, p_dev->irq);
573
574 pcmcia_device_query(p_dev);
575
576 if (device_register(&p_dev->dev))
577 goto err_unreg;
578
579 return p_dev;
580
581 err_unreg:
582 mutex_lock(&s->ops_mutex);
583 list_del(&p_dev->socket_device_list);
584 mutex_unlock(&s->ops_mutex);
585
586 err_free:
587 mutex_lock(&s->ops_mutex);
588 s->device_count--;
589 mutex_unlock(&s->ops_mutex);
590
591 for (i = 0; i < 4; i++)
592 kfree(p_dev->prod_id[i]);
593 kfree(p_dev->devname);
594 kfree(p_dev);
595 err_put:
596 pcmcia_put_socket(s);
597
598 return NULL;
599}
600
601
602static int pcmcia_card_add(struct pcmcia_socket *s)
603{
604 cistpl_longlink_mfc_t mfc;
605 unsigned int no_funcs, i, no_chains;
606 int ret = -EAGAIN;
607
608 mutex_lock(&s->ops_mutex);
609 if (!(s->resource_setup_done)) {
610 dev_dbg(&s->dev,
611 "no resources available, delaying card_add\n");
612 mutex_unlock(&s->ops_mutex);
613 return -EAGAIN;
614 }
615
616 if (pcmcia_validate_mem(s)) {
617 dev_dbg(&s->dev, "validating mem resources failed, "
618 "delaying card_add\n");
619 mutex_unlock(&s->ops_mutex);
620 return -EAGAIN;
621 }
622 mutex_unlock(&s->ops_mutex);
623
624 ret = pccard_validate_cis(s, &no_chains);
625 if (ret || !no_chains) {
626#if defined(CONFIG_MTD_PCMCIA_ANONYMOUS)
627
628
629
630
631
632
633 if (ret == -EIO) {
634 dev_info(&s->dev, "no CIS, assuming an anonymous memory card.\n");
635 pcmcia_replace_cis(s, "\xFF", 1);
636 no_chains = 1;
637 ret = 0;
638 } else
639#endif
640 {
641 dev_dbg(&s->dev, "invalid CIS or invalid resources\n");
642 return -ENODEV;
643 }
644 }
645
646 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
647 no_funcs = mfc.nfn;
648 else
649 no_funcs = 1;
650 s->functions = no_funcs;
651
652 for (i = 0; i < no_funcs; i++)
653 pcmcia_device_add(s, i);
654
655 return ret;
656}
657
658
659static int pcmcia_requery_callback(struct device *dev, void *_data)
660{
661 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
662 if (!p_dev->dev.driver) {
663 dev_dbg(dev, "update device information\n");
664 pcmcia_device_query(p_dev);
665 }
666
667 return 0;
668}
669
670
671static void pcmcia_requery(struct pcmcia_socket *s)
672{
673 int has_pfc;
674
675 if (!(s->state & SOCKET_PRESENT))
676 return;
677
678 if (s->functions == 0) {
679 pcmcia_card_add(s);
680 return;
681 }
682
683
684
685
686 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery_callback);
687
688
689
690 if (s->fake_cis) {
691 int old_funcs, new_funcs;
692 cistpl_longlink_mfc_t mfc;
693
694
695 old_funcs = s->functions;
696
697 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
698 &mfc))
699 new_funcs = mfc.nfn;
700 else
701 new_funcs = 1;
702 if (old_funcs != new_funcs) {
703
704 pcmcia_card_remove(s, NULL);
705 s->functions = 0;
706 pcmcia_card_add(s);
707 }
708 }
709
710
711
712
713 mutex_lock(&s->ops_mutex);
714 has_pfc = s->pcmcia_pfc;
715 mutex_unlock(&s->ops_mutex);
716 if (has_pfc)
717 pcmcia_device_add(s, 0);
718
719
720
721 if (bus_rescan_devices(&pcmcia_bus_type))
722 dev_warn(&s->dev, "rescanning the bus failed\n");
723}
724
725
726#ifdef CONFIG_PCMCIA_LOAD_CIS
727
728
729
730
731
732
733
734
735
736
737static int pcmcia_load_firmware(struct pcmcia_device *dev, char *filename)
738{
739 struct pcmcia_socket *s = dev->socket;
740 const struct firmware *fw;
741 int ret = -ENOMEM;
742 cistpl_longlink_mfc_t mfc;
743 int old_funcs, new_funcs = 1;
744
745 if (!filename)
746 return -EINVAL;
747
748 dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename);
749
750 if (request_firmware(&fw, filename, &dev->dev) == 0) {
751 if (fw->size >= CISTPL_MAX_CIS_SIZE) {
752 ret = -EINVAL;
753 dev_err(&dev->dev, "pcmcia: CIS override is too big\n");
754 goto release;
755 }
756
757 if (!pcmcia_replace_cis(s, fw->data, fw->size))
758 ret = 0;
759 else {
760 dev_err(&dev->dev, "pcmcia: CIS override failed\n");
761 goto release;
762 }
763
764
765 old_funcs = s->functions;
766 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC,
767 &mfc))
768 new_funcs = mfc.nfn;
769
770 if (old_funcs != new_funcs)
771 ret = -EBUSY;
772
773
774 pcmcia_device_query(dev);
775
776
777 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
778 }
779 release:
780 release_firmware(fw);
781
782 return ret;
783}
784
785#else
786
787static inline int pcmcia_load_firmware(struct pcmcia_device *dev,
788 char *filename)
789{
790 return -ENODEV;
791}
792
793#endif
794
795
796static inline int pcmcia_devmatch(struct pcmcia_device *dev,
797 const struct pcmcia_device_id *did)
798{
799 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
800 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
801 return 0;
802 }
803
804 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
805 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
806 return 0;
807 }
808
809 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
810 if (dev->func != did->function)
811 return 0;
812 }
813
814 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
815 if (!dev->prod_id[0])
816 return 0;
817 if (strcmp(did->prod_id[0], dev->prod_id[0]))
818 return 0;
819 }
820
821 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
822 if (!dev->prod_id[1])
823 return 0;
824 if (strcmp(did->prod_id[1], dev->prod_id[1]))
825 return 0;
826 }
827
828 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
829 if (!dev->prod_id[2])
830 return 0;
831 if (strcmp(did->prod_id[2], dev->prod_id[2]))
832 return 0;
833 }
834
835 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
836 if (!dev->prod_id[3])
837 return 0;
838 if (strcmp(did->prod_id[3], dev->prod_id[3]))
839 return 0;
840 }
841
842 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
843 dev_dbg(&dev->dev, "this is a pseudo-multi-function device\n");
844 mutex_lock(&dev->socket->ops_mutex);
845 dev->socket->pcmcia_pfc = 1;
846 mutex_unlock(&dev->socket->ops_mutex);
847 if (dev->device_no != did->device_no)
848 return 0;
849 }
850
851 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
852 int ret;
853
854 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
855 return 0;
856
857
858
859 if (dev->socket->pcmcia_pfc)
860 return 0;
861 if (dev->device_no)
862 return 0;
863
864
865
866
867
868 mutex_lock(&dev->socket->ops_mutex);
869 ret = dev->allow_func_id_match;
870 mutex_unlock(&dev->socket->ops_mutex);
871
872 if (!ret) {
873 dev_dbg(&dev->dev,
874 "skipping FUNC_ID match until userspace ACK\n");
875 return 0;
876 }
877 }
878
879 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
880 dev_dbg(&dev->dev, "device needs a fake CIS\n");
881 if (!dev->socket->fake_cis)
882 if (pcmcia_load_firmware(dev, did->cisfile))
883 return 0;
884 }
885
886 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
887 int i;
888 for (i = 0; i < 4; i++)
889 if (dev->prod_id[i])
890 return 0;
891 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
892 return 0;
893 }
894
895 return 1;
896}
897
898
899static int pcmcia_bus_match(struct device *dev, struct device_driver *drv)
900{
901 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
902 struct pcmcia_driver *p_drv = to_pcmcia_drv(drv);
903 const struct pcmcia_device_id *did = p_drv->id_table;
904 struct pcmcia_dynid *dynid;
905
906
907 mutex_lock(&p_drv->dynids.lock);
908 list_for_each_entry(dynid, &p_drv->dynids.list, node) {
909 dev_dbg(dev, "trying to match to %s\n", drv->name);
910 if (pcmcia_devmatch(p_dev, &dynid->id)) {
911 dev_dbg(dev, "matched to %s\n", drv->name);
912 mutex_unlock(&p_drv->dynids.lock);
913 return 1;
914 }
915 }
916 mutex_unlock(&p_drv->dynids.lock);
917
918 while (did && did->match_flags) {
919 dev_dbg(dev, "trying to match to %s\n", drv->name);
920 if (pcmcia_devmatch(p_dev, did)) {
921 dev_dbg(dev, "matched to %s\n", drv->name);
922 return 1;
923 }
924 did++;
925 }
926
927 return 0;
928}
929
930static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
931{
932 struct pcmcia_device *p_dev;
933 int i;
934 u32 hash[4] = { 0, 0, 0, 0};
935
936 if (!dev)
937 return -ENODEV;
938
939 p_dev = to_pcmcia_dev(dev);
940
941
942 for (i = 0; i < 4; i++) {
943 if (!p_dev->prod_id[i])
944 continue;
945 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
946 }
947
948 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock))
949 return -ENOMEM;
950
951 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no))
952 return -ENOMEM;
953
954 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
955 "pa%08Xpb%08Xpc%08Xpd%08X",
956 p_dev->has_manf_id ? p_dev->manf_id : 0,
957 p_dev->has_card_id ? p_dev->card_id : 0,
958 p_dev->has_func_id ? p_dev->func_id : 0,
959 p_dev->func,
960 p_dev->device_no,
961 hash[0],
962 hash[1],
963 hash[2],
964 hash[3]))
965 return -ENOMEM;
966
967 return 0;
968}
969
970
971
972static int pcmcia_dev_suspend(struct device *dev);
973static int pcmcia_dev_resume(struct device *dev);
974
975static int runtime_suspend(struct device *dev)
976{
977 int rc;
978
979 device_lock(dev);
980 rc = pcmcia_dev_suspend(dev);
981 device_unlock(dev);
982 return rc;
983}
984
985static int runtime_resume(struct device *dev)
986{
987 int rc;
988
989 device_lock(dev);
990 rc = pcmcia_dev_resume(dev);
991 device_unlock(dev);
992 return rc;
993}
994
995
996
997#define pcmcia_device_attr(field, test, format) \
998static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
999{ \
1000 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1001 return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \
1002} \
1003static DEVICE_ATTR_RO(field);
1004
1005#define pcmcia_device_stringattr(name, field) \
1006static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1007{ \
1008 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1009 return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \
1010} \
1011static DEVICE_ATTR_RO(name);
1012
1013pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
1014pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
1015pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
1016pcmcia_device_stringattr(prod_id1, prod_id[0]);
1017pcmcia_device_stringattr(prod_id2, prod_id[1]);
1018pcmcia_device_stringattr(prod_id3, prod_id[2]);
1019pcmcia_device_stringattr(prod_id4, prod_id[3]);
1020
1021static ssize_t function_show(struct device *dev, struct device_attribute *attr,
1022 char *buf)
1023{
1024 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1025 return p_dev->socket ? sprintf(buf, "0x%02x\n", p_dev->func) : -ENODEV;
1026}
1027static DEVICE_ATTR_RO(function);
1028
1029static ssize_t resources_show(struct device *dev,
1030 struct device_attribute *attr, char *buf)
1031{
1032 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1033 char *str = buf;
1034 int i;
1035
1036 for (i = 0; i < PCMCIA_NUM_RESOURCES; i++)
1037 str += sprintf(str, "%pr\n", p_dev->resource[i]);
1038
1039 return str - buf;
1040}
1041static DEVICE_ATTR_RO(resources);
1042
1043static ssize_t pm_state_show(struct device *dev, struct device_attribute *attr, char *buf)
1044{
1045 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1046
1047 if (p_dev->suspended)
1048 return sprintf(buf, "off\n");
1049 else
1050 return sprintf(buf, "on\n");
1051}
1052
1053static ssize_t pm_state_store(struct device *dev, struct device_attribute *attr,
1054 const char *buf, size_t count)
1055{
1056 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1057 int ret = 0;
1058
1059 if (!count)
1060 return -EINVAL;
1061
1062 if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
1063 ret = runtime_suspend(dev);
1064 else if (p_dev->suspended && !strncmp(buf, "on", 2))
1065 ret = runtime_resume(dev);
1066
1067 return ret ? ret : count;
1068}
1069static DEVICE_ATTR_RW(pm_state);
1070
1071static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1072{
1073 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1074 int i;
1075 u32 hash[4] = { 0, 0, 0, 0};
1076
1077
1078 for (i = 0; i < 4; i++) {
1079 if (!p_dev->prod_id[i])
1080 continue;
1081 hash[i] = crc32(0, p_dev->prod_id[i],
1082 strlen(p_dev->prod_id[i]));
1083 }
1084 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1085 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1086 p_dev->has_manf_id ? p_dev->manf_id : 0,
1087 p_dev->has_card_id ? p_dev->card_id : 0,
1088 p_dev->has_func_id ? p_dev->func_id : 0,
1089 p_dev->func, p_dev->device_no,
1090 hash[0], hash[1], hash[2], hash[3]);
1091}
1092static DEVICE_ATTR_RO(modalias);
1093
1094static ssize_t allow_func_id_match_store(struct device *dev,
1095 struct device_attribute *attr, const char *buf, size_t count)
1096{
1097 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1098
1099 if (!count)
1100 return -EINVAL;
1101
1102 mutex_lock(&p_dev->socket->ops_mutex);
1103 p_dev->allow_func_id_match = 1;
1104 mutex_unlock(&p_dev->socket->ops_mutex);
1105 pcmcia_parse_uevents(p_dev->socket, PCMCIA_UEVENT_REQUERY);
1106
1107 return count;
1108}
1109static DEVICE_ATTR_WO(allow_func_id_match);
1110
1111static struct attribute *pcmcia_dev_attrs[] = {
1112 &dev_attr_resources.attr,
1113 &dev_attr_pm_state.attr,
1114 &dev_attr_function.attr,
1115 &dev_attr_func_id.attr,
1116 &dev_attr_manf_id.attr,
1117 &dev_attr_card_id.attr,
1118 &dev_attr_prod_id1.attr,
1119 &dev_attr_prod_id2.attr,
1120 &dev_attr_prod_id3.attr,
1121 &dev_attr_prod_id4.attr,
1122 &dev_attr_modalias.attr,
1123 &dev_attr_allow_func_id_match.attr,
1124 NULL,
1125};
1126ATTRIBUTE_GROUPS(pcmcia_dev);
1127
1128
1129
1130static int pcmcia_dev_suspend(struct device *dev)
1131{
1132 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1133 struct pcmcia_driver *p_drv = NULL;
1134 int ret = 0;
1135
1136 mutex_lock(&p_dev->socket->ops_mutex);
1137 if (p_dev->suspended) {
1138 mutex_unlock(&p_dev->socket->ops_mutex);
1139 return 0;
1140 }
1141 p_dev->suspended = 1;
1142 mutex_unlock(&p_dev->socket->ops_mutex);
1143
1144 dev_dbg(dev, "suspending\n");
1145
1146 if (dev->driver)
1147 p_drv = to_pcmcia_drv(dev->driver);
1148
1149 if (!p_drv)
1150 goto out;
1151
1152 if (p_drv->suspend) {
1153 ret = p_drv->suspend(p_dev);
1154 if (ret) {
1155 dev_err(dev,
1156 "pcmcia: device %s (driver %s) did not want to go to sleep (%d)\n",
1157 p_dev->devname, p_drv->name, ret);
1158 mutex_lock(&p_dev->socket->ops_mutex);
1159 p_dev->suspended = 0;
1160 mutex_unlock(&p_dev->socket->ops_mutex);
1161 goto out;
1162 }
1163 }
1164
1165 if (p_dev->device_no == p_dev->func) {
1166 dev_dbg(dev, "releasing configuration\n");
1167 pcmcia_release_configuration(p_dev);
1168 }
1169
1170 out:
1171 return ret;
1172}
1173
1174
1175static int pcmcia_dev_resume(struct device *dev)
1176{
1177 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1178 struct pcmcia_driver *p_drv = NULL;
1179 int ret = 0;
1180
1181 mutex_lock(&p_dev->socket->ops_mutex);
1182 if (!p_dev->suspended) {
1183 mutex_unlock(&p_dev->socket->ops_mutex);
1184 return 0;
1185 }
1186 p_dev->suspended = 0;
1187 mutex_unlock(&p_dev->socket->ops_mutex);
1188
1189 dev_dbg(dev, "resuming\n");
1190
1191 if (dev->driver)
1192 p_drv = to_pcmcia_drv(dev->driver);
1193
1194 if (!p_drv)
1195 goto out;
1196
1197 if (p_dev->device_no == p_dev->func) {
1198 dev_dbg(dev, "requesting configuration\n");
1199 ret = pcmcia_enable_device(p_dev);
1200 if (ret)
1201 goto out;
1202 }
1203
1204 if (p_drv->resume)
1205 ret = p_drv->resume(p_dev);
1206
1207 out:
1208 return ret;
1209}
1210
1211
1212static int pcmcia_bus_suspend_callback(struct device *dev, void *_data)
1213{
1214 struct pcmcia_socket *skt = _data;
1215 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1216
1217 if (p_dev->socket != skt || p_dev->suspended)
1218 return 0;
1219
1220 return runtime_suspend(dev);
1221}
1222
1223static int pcmcia_bus_resume_callback(struct device *dev, void *_data)
1224{
1225 struct pcmcia_socket *skt = _data;
1226 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1227
1228 if (p_dev->socket != skt || !p_dev->suspended)
1229 return 0;
1230
1231 runtime_resume(dev);
1232
1233 return 0;
1234}
1235
1236static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1237{
1238 dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock);
1239 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1240 return 0;
1241}
1242
1243static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1244{
1245 dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock);
1246 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1247 pcmcia_bus_suspend_callback)) {
1248 pcmcia_bus_resume(skt);
1249 return -EIO;
1250 }
1251 return 0;
1252}
1253
1254static int pcmcia_bus_remove(struct pcmcia_socket *skt)
1255{
1256 atomic_set(&skt->present, 0);
1257 pcmcia_card_remove(skt, NULL);
1258
1259 mutex_lock(&skt->ops_mutex);
1260 destroy_cis_cache(skt);
1261 pcmcia_cleanup_irq(skt);
1262 mutex_unlock(&skt->ops_mutex);
1263
1264 return 0;
1265}
1266
1267static int pcmcia_bus_add(struct pcmcia_socket *skt)
1268{
1269 atomic_set(&skt->present, 1);
1270
1271 mutex_lock(&skt->ops_mutex);
1272 skt->pcmcia_pfc = 0;
1273 destroy_cis_cache(skt);
1274 mutex_unlock(&skt->ops_mutex);
1275
1276 pcmcia_card_add(skt);
1277
1278 return 0;
1279}
1280
1281static int pcmcia_bus_early_resume(struct pcmcia_socket *skt)
1282{
1283 if (!verify_cis_cache(skt))
1284 return 0;
1285
1286 dev_dbg(&skt->dev, "cis mismatch - different card\n");
1287
1288
1289 pcmcia_bus_remove(skt);
1290
1291 mutex_lock(&skt->ops_mutex);
1292 destroy_cis_cache(skt);
1293 kfree(skt->fake_cis);
1294 skt->fake_cis = NULL;
1295 skt->functions = 0;
1296 mutex_unlock(&skt->ops_mutex);
1297
1298
1299 pcmcia_bus_add(skt);
1300 return 0;
1301}
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev)
1312{
1313 struct pcmcia_device *p_dev;
1314 struct pcmcia_device *ret = NULL;
1315
1316 p_dev = pcmcia_get_dev(_p_dev);
1317 if (!p_dev)
1318 return NULL;
1319
1320 if (atomic_read(&p_dev->socket->present) != 0)
1321 ret = p_dev;
1322
1323 pcmcia_put_dev(p_dev);
1324 return ret;
1325}
1326EXPORT_SYMBOL(pcmcia_dev_present);
1327
1328
1329static struct pcmcia_callback pcmcia_bus_callback = {
1330 .owner = THIS_MODULE,
1331 .add = pcmcia_bus_add,
1332 .remove = pcmcia_bus_remove,
1333 .requery = pcmcia_requery,
1334 .validate = pccard_validate_cis,
1335 .suspend = pcmcia_bus_suspend,
1336 .early_resume = pcmcia_bus_early_resume,
1337 .resume = pcmcia_bus_resume,
1338};
1339
1340static int pcmcia_bus_add_socket(struct device *dev,
1341 struct class_interface *class_intf)
1342{
1343 struct pcmcia_socket *socket = dev_get_drvdata(dev);
1344 int ret;
1345
1346 socket = pcmcia_get_socket(socket);
1347 if (!socket) {
1348 dev_err(dev, "PCMCIA obtaining reference to socket failed\n");
1349 return -ENODEV;
1350 }
1351
1352 ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
1353 if (ret) {
1354 dev_err(dev, "PCMCIA registration failed\n");
1355 pcmcia_put_socket(socket);
1356 return ret;
1357 }
1358
1359 INIT_LIST_HEAD(&socket->devices_list);
1360 socket->pcmcia_pfc = 0;
1361 socket->device_count = 0;
1362 atomic_set(&socket->present, 0);
1363
1364 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1365 if (ret) {
1366 dev_err(dev, "PCMCIA registration failed\n");
1367 pcmcia_put_socket(socket);
1368 return ret;
1369 }
1370
1371 return 0;
1372}
1373
1374static void pcmcia_bus_remove_socket(struct device *dev,
1375 struct class_interface *class_intf)
1376{
1377 struct pcmcia_socket *socket = dev_get_drvdata(dev);
1378
1379 if (!socket)
1380 return;
1381
1382 pccard_register_pcmcia(socket, NULL);
1383
1384
1385 mutex_lock(&socket->skt_mutex);
1386 pcmcia_card_remove(socket, NULL);
1387 release_cis_mem(socket);
1388 mutex_unlock(&socket->skt_mutex);
1389
1390 sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr);
1391
1392 pcmcia_put_socket(socket);
1393
1394 return;
1395}
1396
1397
1398
1399static struct class_interface pcmcia_bus_interface __refdata = {
1400 .class = &pcmcia_socket_class,
1401 .add_dev = &pcmcia_bus_add_socket,
1402 .remove_dev = &pcmcia_bus_remove_socket,
1403};
1404
1405static const struct dev_pm_ops pcmcia_bus_pm_ops = {
1406 SET_SYSTEM_SLEEP_PM_OPS(pcmcia_dev_suspend, pcmcia_dev_resume)
1407};
1408
1409struct bus_type pcmcia_bus_type = {
1410 .name = "pcmcia",
1411 .uevent = pcmcia_bus_uevent,
1412 .match = pcmcia_bus_match,
1413 .dev_groups = pcmcia_dev_groups,
1414 .probe = pcmcia_device_probe,
1415 .remove = pcmcia_device_remove,
1416 .pm = &pcmcia_bus_pm_ops,
1417};
1418
1419
1420static int __init init_pcmcia_bus(void)
1421{
1422 int ret;
1423
1424 ret = bus_register(&pcmcia_bus_type);
1425 if (ret < 0) {
1426 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret);
1427 return ret;
1428 }
1429 ret = class_interface_register(&pcmcia_bus_interface);
1430 if (ret < 0) {
1431 printk(KERN_WARNING
1432 "pcmcia: class_interface_register error: %d\n", ret);
1433 bus_unregister(&pcmcia_bus_type);
1434 return ret;
1435 }
1436
1437 return 0;
1438}
1439fs_initcall(init_pcmcia_bus);
1440
1441
1442
1443static void __exit exit_pcmcia_bus(void)
1444{
1445 class_interface_unregister(&pcmcia_bus_interface);
1446
1447 bus_unregister(&pcmcia_bus_type);
1448}
1449module_exit(exit_pcmcia_bus);
1450
1451
1452MODULE_ALIAS("ds");
1453
