2 * ds.c -- 16-bit PCMCIA core support
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.
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.
12 * (C) 1999 David A. Hinds
13 * (C) 2003 - 2006 Dominik Brodowski
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>
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>
34 #include "cs_internal.h"
36 /*====================================================================*/
38 /* Module parameters */
40 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
41 MODULE_DESCRIPTION("PCMCIA Driver Services");
42 MODULE_LICENSE("GPL");
45 /*====================================================================*/
47 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
49 struct pcmcia_device_id *did = p_drv->id_table;
53 if (!p_drv->probe || !p_drv->remove)
54 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
55 "function\n", p_drv->drv.name);
57 while (did && did->match_flags) {
58 for (i = 0; i < 4; i++) {
62 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
63 if (hash == did->prod_id_hash[i])
66 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
67 "product string \"%s\": is 0x%x, should "
68 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
69 did->prod_id_hash[i], hash);
70 printk(KERN_DEBUG "pcmcia: see "
71 "Documentation/pcmcia/devicetable.txt for "
81 /*======================================================================*/
85 struct list_head node;
86 struct pcmcia_device_id id;
90 * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices
91 * @driver: target device driver
92 * @buf: buffer for scanning device ID data
95 * Adds a new dynamic PCMCIA device ID to this driver,
96 * and causes the driver to probe for all devices again.
99 pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count)
101 struct pcmcia_dynid *dynid;
102 struct pcmcia_driver *pdrv = to_pcmcia_drv(driver);
103 __u16 match_flags, manf_id, card_id;
104 __u8 func_id, function, device_no;
105 __u32 prod_id_hash[4] = {0, 0, 0, 0};
109 fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
110 &match_flags, &manf_id, &card_id, &func_id, &function, &device_no,
111 &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]);
115 dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL);
119 dynid->id.match_flags = match_flags;
120 dynid->id.manf_id = manf_id;
121 dynid->id.card_id = card_id;
122 dynid->id.func_id = func_id;
123 dynid->id.function = function;
124 dynid->id.device_no = device_no;
125 memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4);
127 mutex_lock(&pdrv->dynids.lock);
128 list_add_tail(&dynid->node, &pdrv->dynids.list);
129 mutex_unlock(&pdrv->dynids.lock);
131 if (get_driver(&pdrv->drv)) {
132 retval = driver_attach(&pdrv->drv);
133 put_driver(&pdrv->drv);
140 static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id);
143 pcmcia_free_dynids(struct pcmcia_driver *drv)
145 struct pcmcia_dynid *dynid, *n;
147 mutex_lock(&drv->dynids.lock);
148 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
149 list_del(&dynid->node);
152 mutex_unlock(&drv->dynids.lock);
156 pcmcia_create_newid_file(struct pcmcia_driver *drv)
159 if (drv->probe != NULL)
160 error = driver_create_file(&drv->drv, &driver_attr_new_id);
166 * pcmcia_register_driver - register a PCMCIA driver with the bus core
167 * @driver: the &driver being registered
169 * Registers a PCMCIA driver with the PCMCIA bus core.
171 int pcmcia_register_driver(struct pcmcia_driver *driver)
178 pcmcia_check_driver(driver);
180 /* initialize common fields */
181 driver->drv.bus = &pcmcia_bus_type;
182 driver->drv.owner = driver->owner;
183 mutex_init(&driver->dynids.lock);
184 INIT_LIST_HEAD(&driver->dynids.list);
186 pr_debug("registering driver %s\n", driver->drv.name);
188 error = driver_register(&driver->drv);
192 error = pcmcia_create_newid_file(driver);
194 driver_unregister(&driver->drv);
198 EXPORT_SYMBOL(pcmcia_register_driver);
201 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
202 * @driver: the &driver being unregistered
204 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
206 pr_debug("unregistering driver %s\n", driver->drv.name);
207 driver_unregister(&driver->drv);
208 pcmcia_free_dynids(driver);
210 EXPORT_SYMBOL(pcmcia_unregister_driver);
213 /* pcmcia_device handling */
215 struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev)
217 struct device *tmp_dev;
218 tmp_dev = get_device(&p_dev->dev);
221 return to_pcmcia_dev(tmp_dev);
224 void pcmcia_put_dev(struct pcmcia_device *p_dev)
227 put_device(&p_dev->dev);
230 static void pcmcia_release_function(struct kref *ref)
232 struct config_t *c = container_of(ref, struct config_t, ref);
233 pr_debug("releasing config_t\n");
237 static void pcmcia_release_dev(struct device *dev)
239 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
240 dev_dbg(dev, "releasing device\n");
241 pcmcia_put_socket(p_dev->socket);
242 kfree(p_dev->devname);
243 kref_put(&p_dev->function_config->ref, pcmcia_release_function);
247 static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc)
249 if (!s->pcmcia_state.device_add_pending) {
250 dev_dbg(&s->dev, "scheduling to add %s secondary"
251 " device to %d\n", mfc ? "mfc" : "pfc", s->sock);
252 s->pcmcia_state.device_add_pending = 1;
253 s->pcmcia_state.mfc_pfc = mfc;
254 schedule_work(&s->device_add);
259 static int pcmcia_device_probe(struct device *dev)
261 struct pcmcia_device *p_dev;
262 struct pcmcia_driver *p_drv;
263 struct pcmcia_device_id *did;
264 struct pcmcia_socket *s;
265 cistpl_config_t cis_config;
268 dev = get_device(dev);
272 p_dev = to_pcmcia_dev(dev);
273 p_drv = to_pcmcia_drv(dev->driver);
276 /* The PCMCIA code passes the match data in via dev_set_drvdata(dev)
277 * which is an ugly hack. Once the driver probe is called it may
278 * and often will overwrite the match data so we must save it first
280 * handle pseudo multifunction devices:
281 * there are at most two pseudo multifunction devices.
282 * if we're matching against the first, schedule a
283 * call which will then check whether there are two
284 * pseudo devices, and if not, add the second one.
286 did = dev_get_drvdata(&p_dev->dev);
288 dev_dbg(dev, "trying to bind to %s\n", p_drv->drv.name);
290 if ((!p_drv->probe) || (!p_dev->function_config) ||
291 (!try_module_get(p_drv->owner))) {
296 /* set up some more device information */
297 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG,
300 p_dev->conf.ConfigBase = cis_config.base;
301 p_dev->conf.Present = cis_config.rmask[0];
303 dev_printk(KERN_INFO, dev,
304 "pcmcia: could not parse base and rmask0 of CIS\n");
305 p_dev->conf.ConfigBase = 0;
306 p_dev->conf.Present = 0;
309 ret = p_drv->probe(p_dev);
311 dev_dbg(dev, "binding to %s failed with %d\n",
312 p_drv->drv.name, ret);
316 mutex_lock(&s->ops_mutex);
317 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
318 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
319 pcmcia_add_device_later(p_dev->socket, 0);
320 mutex_unlock(&s->ops_mutex);
324 module_put(p_drv->owner);
333 * Removes a PCMCIA card from the device tree and socket list.
335 static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
337 struct pcmcia_device *p_dev;
338 struct pcmcia_device *tmp;
340 dev_dbg(leftover ? &leftover->dev : &s->dev,
341 "pcmcia_card_remove(%d) %s\n", s->sock,
342 leftover ? leftover->devname : "");
344 mutex_lock(&s->ops_mutex);
349 mutex_unlock(&s->ops_mutex);
351 /* unregister all pcmcia_devices registered with this socket, except leftover */
352 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
353 if (p_dev == leftover)
356 mutex_lock(&s->ops_mutex);
357 list_del(&p_dev->socket_device_list);
359 mutex_unlock(&s->ops_mutex);
361 dev_dbg(&p_dev->dev, "unregistering device\n");
362 device_unregister(&p_dev->dev);
368 static int pcmcia_device_remove(struct device *dev)
370 struct pcmcia_device *p_dev;
371 struct pcmcia_driver *p_drv;
372 struct pcmcia_device_id *did;
375 p_dev = to_pcmcia_dev(dev);
376 p_drv = to_pcmcia_drv(dev->driver);
378 dev_dbg(dev, "removing device\n");
380 /* If we're removing the primary module driving a
381 * pseudo multi-function card, we need to unbind
384 did = dev_get_drvdata(&p_dev->dev);
385 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
386 (p_dev->socket->device_count > 0) &&
387 (p_dev->device_no == 0))
388 pcmcia_card_remove(p_dev->socket, p_dev);
390 /* detach the "instance" */
395 p_drv->remove(p_dev);
397 p_dev->dev_node = NULL;
399 /* check for proper unloading */
400 if (p_dev->_irq || p_dev->_io || p_dev->_locked)
401 dev_printk(KERN_INFO, dev,
402 "pcmcia: driver %s did not release config properly\n",
405 for (i = 0; i < MAX_WIN; i++)
406 if (p_dev->_win & CLIENT_WIN_REQ(i))
407 dev_printk(KERN_INFO, dev,
408 "pcmcia: driver %s did not release window properly\n",
411 /* references from pcmcia_probe_device */
412 pcmcia_put_dev(p_dev);
413 module_put(p_drv->owner);
420 * pcmcia_device_query -- determine information about a pcmcia device
422 static int pcmcia_device_query(struct pcmcia_device *p_dev)
424 cistpl_manfid_t manf_id;
425 cistpl_funcid_t func_id;
426 cistpl_vers_1_t *vers1;
429 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
433 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL,
434 CISTPL_MANFID, &manf_id)) {
435 p_dev->manf_id = manf_id.manf;
436 p_dev->card_id = manf_id.card;
437 p_dev->has_manf_id = 1;
438 p_dev->has_card_id = 1;
441 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
442 CISTPL_FUNCID, &func_id)) {
443 p_dev->func_id = func_id.func;
444 p_dev->has_func_id = 1;
446 /* rule of thumb: cards with no FUNCID, but with
447 * common memory device geometry information, are
448 * probably memory cards (from pcmcia-cs) */
449 cistpl_device_geo_t *devgeo;
451 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
456 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
457 CISTPL_DEVICE_GEO, devgeo)) {
459 "mem device geometry probably means "
461 p_dev->func_id = CISTPL_FUNCID_MEMORY;
462 p_dev->has_func_id = 1;
467 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1,
469 for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) {
473 tmp = vers1->str + vers1->ofs[i];
475 length = strlen(tmp) + 1;
476 if ((length < 2) || (length > 255))
479 p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
481 if (!p_dev->prod_id[i])
484 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
494 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
495 * Serializes pcmcia_device_add; will most likely be removed in future.
497 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
498 * won't work, this doesn't matter much at the moment: the driver core doesn't
501 static DEFINE_MUTEX(device_add_lock);
503 struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
505 struct pcmcia_device *p_dev, *tmp_dev;
507 s = pcmcia_get_socket(s);
511 mutex_lock(&device_add_lock);
513 pr_debug("adding device to %d, function %d\n", s->sock, function);
515 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
519 mutex_lock(&s->ops_mutex);
520 p_dev->device_no = (s->device_count++);
521 mutex_unlock(&s->ops_mutex);
523 /* max of 4 devices per card */
524 if (p_dev->device_no >= 4)
528 p_dev->func = function;
530 p_dev->dev.bus = &pcmcia_bus_type;
531 p_dev->dev.parent = s->dev.parent;
532 p_dev->dev.release = pcmcia_release_dev;
533 /* by default don't allow DMA */
534 p_dev->dma_mask = DMA_MASK_NONE;
535 p_dev->dev.dma_mask = &p_dev->dma_mask;
536 dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no);
537 if (!dev_name(&p_dev->dev))
539 p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev));
542 dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname);
544 mutex_lock(&s->ops_mutex);
547 * p_dev->function_config must be the same for all card functions.
548 * Note that this is serialized by the device_add_lock, so that
549 * only one such struct will be created.
551 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
552 if (p_dev->func == tmp_dev->func) {
553 p_dev->function_config = tmp_dev->function_config;
554 p_dev->io = tmp_dev->io;
555 p_dev->irq = tmp_dev->irq;
556 kref_get(&p_dev->function_config->ref);
559 /* Add to the list in pcmcia_bus_socket */
560 list_add(&p_dev->socket_device_list, &s->devices_list);
562 mutex_unlock(&s->ops_mutex);
564 if (!p_dev->function_config) {
565 dev_dbg(&p_dev->dev, "creating config_t\n");
566 p_dev->function_config = kzalloc(sizeof(struct config_t),
568 if (!p_dev->function_config)
570 kref_init(&p_dev->function_config->ref);
573 dev_printk(KERN_NOTICE, &p_dev->dev,
574 "pcmcia: registering new device %s\n",
577 pcmcia_device_query(p_dev);
579 if (device_register(&p_dev->dev))
582 mutex_unlock(&device_add_lock);
587 mutex_lock(&s->ops_mutex);
588 list_del(&p_dev->socket_device_list);
589 mutex_unlock(&s->ops_mutex);
592 mutex_lock(&s->ops_mutex);
594 mutex_unlock(&s->ops_mutex);
596 kfree(p_dev->devname);
599 mutex_unlock(&device_add_lock);
600 pcmcia_put_socket(s);
606 static int pcmcia_card_add(struct pcmcia_socket *s)
608 cistpl_longlink_mfc_t mfc;
609 unsigned int no_funcs, i, no_chains;
612 mutex_lock(&s->ops_mutex);
613 if (!(s->resource_setup_done)) {
615 "no resources available, delaying card_add\n");
616 mutex_unlock(&s->ops_mutex);
617 return -EAGAIN; /* try again, but later... */
620 if (pcmcia_validate_mem(s)) {
621 dev_dbg(&s->dev, "validating mem resources failed, "
622 "delaying card_add\n");
623 mutex_unlock(&s->ops_mutex);
624 return -EAGAIN; /* try again, but later... */
626 mutex_unlock(&s->ops_mutex);
628 ret = pccard_validate_cis(s, &no_chains);
629 if (ret || !no_chains) {
630 dev_dbg(&s->dev, "invalid CIS or invalid resources\n");
634 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
638 s->functions = no_funcs;
640 for (i = 0; i < no_funcs; i++)
641 pcmcia_device_add(s, i);
647 static void pcmcia_delayed_add_device(struct work_struct *work)
649 struct pcmcia_socket *s =
650 container_of(work, struct pcmcia_socket, device_add);
653 mutex_lock(&s->ops_mutex);
654 mfc_pfc = s->pcmcia_state.mfc_pfc;
655 s->pcmcia_state.device_add_pending = 0;
656 s->pcmcia_state.mfc_pfc = 0;
657 mutex_unlock(&s->ops_mutex);
659 dev_dbg(&s->dev, "adding additional device to %d\n", s->sock);
660 pcmcia_device_add(s, mfc_pfc);
663 static int pcmcia_requery(struct device *dev, void * _data)
665 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
666 if (!p_dev->dev.driver) {
667 dev_dbg(dev, "update device information\n");
668 pcmcia_device_query(p_dev);
674 static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis)
679 /* must be called with skt_mutex held */
680 dev_dbg(&skt->dev, "re-scanning socket %d\n", skt->sock);
682 mutex_lock(&skt->ops_mutex);
683 if (list_empty(&skt->devices_list))
685 mutex_unlock(&skt->ops_mutex);
687 /* If this is because of a CIS override, start over */
688 if (new_cis && !no_devices)
689 pcmcia_card_remove(skt, NULL);
691 /* if no devices were added for this socket yet because of
692 * missing resource information or other trouble, we need to
694 if (no_devices || new_cis) {
695 ret = pcmcia_card_add(skt);
700 /* some device information might have changed because of a CIS
701 * update or because we can finally read it correctly... so
702 * determine it again, overwriting old values if necessary. */
703 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
705 /* we re-scan all devices, not just the ones connected to this
706 * socket. This does not matter, though. */
707 ret = bus_rescan_devices(&pcmcia_bus_type);
709 printk(KERN_INFO "pcmcia: bus_rescan_devices failed\n");
712 #ifdef CONFIG_PCMCIA_LOAD_CIS
715 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
716 * @dev: the pcmcia device which needs a CIS override
717 * @filename: requested filename in /lib/firmware/
719 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
720 * the one provided by the card is broken. The firmware files reside in
721 * /lib/firmware/ in userspace.
723 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
725 struct pcmcia_socket *s = dev->socket;
726 const struct firmware *fw;
730 cistpl_longlink_mfc_t mfc;
735 dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename);
737 if (request_firmware(&fw, filename, &dev->dev) == 0) {
738 if (fw->size >= CISTPL_MAX_CIS_SIZE) {
740 dev_printk(KERN_ERR, &dev->dev,
741 "pcmcia: CIS override is too big\n");
745 if (!pcmcia_replace_cis(s, fw->data, fw->size))
748 dev_printk(KERN_ERR, &dev->dev,
749 "pcmcia: CIS override failed\n");
754 /* update information */
755 pcmcia_device_query(dev);
757 /* does this cis override add or remove functions? */
758 old_funcs = s->functions;
760 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
764 s->functions = no_funcs;
766 if (old_funcs > no_funcs)
767 pcmcia_card_remove(s, dev);
768 else if (no_funcs > old_funcs) {
769 mutex_lock(&s->ops_mutex);
770 pcmcia_add_device_later(s, 1);
771 mutex_unlock(&s->ops_mutex);
775 release_firmware(fw);
780 #else /* !CONFIG_PCMCIA_LOAD_CIS */
782 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
790 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
791 struct pcmcia_device_id *did)
793 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
794 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
798 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
799 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
803 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
804 if (dev->func != did->function)
808 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
809 if (!dev->prod_id[0])
811 if (strcmp(did->prod_id[0], dev->prod_id[0]))
815 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
816 if (!dev->prod_id[1])
818 if (strcmp(did->prod_id[1], dev->prod_id[1]))
822 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
823 if (!dev->prod_id[2])
825 if (strcmp(did->prod_id[2], dev->prod_id[2]))
829 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
830 if (!dev->prod_id[3])
832 if (strcmp(did->prod_id[3], dev->prod_id[3]))
836 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
837 if (dev->device_no != did->device_no)
841 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
844 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
847 /* if this is a pseudo-multi-function device,
848 * we need explicit matches */
849 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
854 /* also, FUNC_ID matching needs to be activated by userspace
855 * after it has re-checked that there is no possible module
856 * with a prod_id/manf_id/card_id match.
858 mutex_lock(&dev->socket->ops_mutex);
859 ret = dev->allow_func_id_match;
860 mutex_unlock(&dev->socket->ops_mutex);
864 "skipping FUNC_ID match until userspace ACK\n");
869 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
870 dev_dbg(&dev->dev, "device needs a fake CIS\n");
871 if (!dev->socket->fake_cis)
872 pcmcia_load_firmware(dev, did->cisfile);
874 if (!dev->socket->fake_cis)
878 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
880 for (i = 0; i < 4; i++)
883 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
887 dev_set_drvdata(&dev->dev, did);
893 static int pcmcia_bus_match(struct device *dev, struct device_driver *drv)
895 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
896 struct pcmcia_driver *p_drv = to_pcmcia_drv(drv);
897 struct pcmcia_device_id *did = p_drv->id_table;
898 struct pcmcia_dynid *dynid;
900 /* match dynamic devices first */
901 mutex_lock(&p_drv->dynids.lock);
902 list_for_each_entry(dynid, &p_drv->dynids.list, node) {
903 dev_dbg(dev, "trying to match to %s\n", drv->name);
904 if (pcmcia_devmatch(p_dev, &dynid->id)) {
905 dev_dbg(dev, "matched to %s\n", drv->name);
906 mutex_unlock(&p_drv->dynids.lock);
910 mutex_unlock(&p_drv->dynids.lock);
912 #ifdef CONFIG_PCMCIA_IOCTL
913 /* matching by cardmgr */
914 if (p_dev->cardmgr == p_drv) {
915 dev_dbg(dev, "cardmgr matched to %s\n", drv->name);
920 while (did && did->match_flags) {
921 dev_dbg(dev, "trying to match to %s\n", drv->name);
922 if (pcmcia_devmatch(p_dev, did)) {
923 dev_dbg(dev, "matched to %s\n", drv->name);
932 #ifdef CONFIG_HOTPLUG
934 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
936 struct pcmcia_device *p_dev;
938 u32 hash[4] = { 0, 0, 0, 0};
943 p_dev = to_pcmcia_dev(dev);
945 /* calculate hashes */
946 for (i = 0; i < 4; i++) {
947 if (!p_dev->prod_id[i])
949 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
952 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock))
955 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no))
958 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
959 "pa%08Xpb%08Xpc%08Xpd%08X",
960 p_dev->has_manf_id ? p_dev->manf_id : 0,
961 p_dev->has_card_id ? p_dev->card_id : 0,
962 p_dev->has_func_id ? p_dev->func_id : 0,
976 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
983 /************************ runtime PM support ***************************/
985 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state);
986 static int pcmcia_dev_resume(struct device *dev);
988 static int runtime_suspend(struct device *dev)
993 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND);
998 static int runtime_resume(struct device *dev)
1003 rc = pcmcia_dev_resume(dev);
1008 /************************ per-device sysfs output ***************************/
1010 #define pcmcia_device_attr(field, test, format) \
1011 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1013 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1014 return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \
1017 #define pcmcia_device_stringattr(name, field) \
1018 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1020 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1021 return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \
1024 pcmcia_device_attr(func, socket, "0x%02x\n");
1025 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
1026 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
1027 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
1028 pcmcia_device_stringattr(prod_id1, prod_id[0]);
1029 pcmcia_device_stringattr(prod_id2, prod_id[1]);
1030 pcmcia_device_stringattr(prod_id3, prod_id[2]);
1031 pcmcia_device_stringattr(prod_id4, prod_id[3]);
1034 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf)
1036 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1038 if (p_dev->suspended)
1039 return sprintf(buf, "off\n");
1041 return sprintf(buf, "on\n");
1044 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr,
1045 const char *buf, size_t count)
1047 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1053 if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
1054 ret = runtime_suspend(dev);
1055 else if (p_dev->suspended && !strncmp(buf, "on", 2))
1056 ret = runtime_resume(dev);
1058 return ret ? ret : count;
1062 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1064 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1066 u32 hash[4] = { 0, 0, 0, 0};
1068 /* calculate hashes */
1069 for (i = 0; i < 4; i++) {
1070 if (!p_dev->prod_id[i])
1072 hash[i] = crc32(0, p_dev->prod_id[i],
1073 strlen(p_dev->prod_id[i]));
1075 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1076 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1077 p_dev->has_manf_id ? p_dev->manf_id : 0,
1078 p_dev->has_card_id ? p_dev->card_id : 0,
1079 p_dev->has_func_id ? p_dev->func_id : 0,
1080 p_dev->func, p_dev->device_no,
1081 hash[0], hash[1], hash[2], hash[3]);
1084 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
1085 struct device_attribute *attr, const char *buf, size_t count)
1087 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1093 mutex_lock(&p_dev->socket->ops_mutex);
1094 p_dev->allow_func_id_match = 1;
1095 mutex_unlock(&p_dev->socket->ops_mutex);
1097 ret = bus_rescan_devices(&pcmcia_bus_type);
1099 printk(KERN_INFO "pcmcia: bus_rescan_devices failed after "
1100 "allowing func_id matches\n");
1105 static struct device_attribute pcmcia_dev_attrs[] = {
1106 __ATTR(function, 0444, func_show, NULL),
1107 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state),
1111 __ATTR_RO(prod_id1),
1112 __ATTR_RO(prod_id2),
1113 __ATTR_RO(prod_id3),
1114 __ATTR_RO(prod_id4),
1115 __ATTR_RO(modalias),
1116 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
1120 /* PM support, also needed for reset */
1122 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state)
1124 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1125 struct pcmcia_driver *p_drv = NULL;
1128 mutex_lock(&p_dev->socket->ops_mutex);
1129 if (p_dev->suspended) {
1130 mutex_unlock(&p_dev->socket->ops_mutex);
1133 p_dev->suspended = 1;
1134 mutex_unlock(&p_dev->socket->ops_mutex);
1136 dev_dbg(dev, "suspending\n");
1139 p_drv = to_pcmcia_drv(dev->driver);
1144 if (p_drv->suspend) {
1145 ret = p_drv->suspend(p_dev);
1147 dev_printk(KERN_ERR, dev,
1148 "pcmcia: device %s (driver %s) did "
1149 "not want to go to sleep (%d)\n",
1150 p_dev->devname, p_drv->drv.name, ret);
1151 mutex_lock(&p_dev->socket->ops_mutex);
1152 p_dev->suspended = 0;
1153 mutex_unlock(&p_dev->socket->ops_mutex);
1158 if (p_dev->device_no == p_dev->func) {
1159 dev_dbg(dev, "releasing configuration\n");
1160 pcmcia_release_configuration(p_dev);
1168 static int pcmcia_dev_resume(struct device *dev)
1170 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1171 struct pcmcia_driver *p_drv = NULL;
1174 mutex_lock(&p_dev->socket->ops_mutex);
1175 if (!p_dev->suspended) {
1176 mutex_unlock(&p_dev->socket->ops_mutex);
1179 p_dev->suspended = 0;
1180 mutex_unlock(&p_dev->socket->ops_mutex);
1182 dev_dbg(dev, "resuming\n");
1185 p_drv = to_pcmcia_drv(dev->driver);
1190 if (p_dev->device_no == p_dev->func) {
1191 dev_dbg(dev, "requesting configuration\n");
1192 ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
1198 ret = p_drv->resume(p_dev);
1205 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
1207 struct pcmcia_socket *skt = _data;
1208 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1210 if (p_dev->socket != skt || p_dev->suspended)
1213 return runtime_suspend(dev);
1216 static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
1218 struct pcmcia_socket *skt = _data;
1219 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1221 if (p_dev->socket != skt || !p_dev->suspended)
1224 runtime_resume(dev);
1229 static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1231 dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock);
1232 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1236 static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1238 dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock);
1239 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1240 pcmcia_bus_suspend_callback)) {
1241 pcmcia_bus_resume(skt);
1248 /*======================================================================
1250 The card status event handler.
1252 ======================================================================*/
1254 /* Normally, the event is passed to individual drivers after
1255 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
1256 * is inversed to maintain historic compatibility.
1259 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
1261 struct pcmcia_socket *s = pcmcia_get_socket(skt);
1264 dev_printk(KERN_ERR, &skt->dev,
1265 "PCMCIA obtaining reference to socket " \
1266 "failed, event 0x%x lost!\n", event);
1270 dev_dbg(&skt->dev, "ds_event(0x%06x, %d, 0x%p)\n",
1271 event, priority, skt);
1274 case CS_EVENT_CARD_REMOVAL:
1275 mutex_lock(&s->ops_mutex);
1276 s->pcmcia_state.present = 0;
1277 mutex_unlock(&s->ops_mutex);
1278 pcmcia_card_remove(skt, NULL);
1279 handle_event(skt, event);
1280 mutex_lock(&s->ops_mutex);
1281 destroy_cis_cache(s);
1282 mutex_unlock(&s->ops_mutex);
1285 case CS_EVENT_CARD_INSERTION:
1286 mutex_lock(&s->ops_mutex);
1287 s->pcmcia_state.present = 1;
1288 destroy_cis_cache(s); /* to be on the safe side... */
1289 mutex_unlock(&s->ops_mutex);
1290 pcmcia_card_add(skt);
1291 handle_event(skt, event);
1294 case CS_EVENT_EJECTION_REQUEST:
1297 case CS_EVENT_PM_RESUME:
1298 if (verify_cis_cache(skt) != 0) {
1299 dev_dbg(&skt->dev, "cis mismatch - different card\n");
1300 /* first, remove the card */
1301 ds_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH);
1302 mutex_lock(&s->ops_mutex);
1303 destroy_cis_cache(skt);
1304 kfree(skt->fake_cis);
1305 skt->fake_cis = NULL;
1306 mutex_unlock(&s->ops_mutex);
1307 /* now, add the new card */
1308 ds_event(skt, CS_EVENT_CARD_INSERTION,
1311 handle_event(skt, event);
1314 case CS_EVENT_PM_SUSPEND:
1315 case CS_EVENT_RESET_PHYSICAL:
1316 case CS_EVENT_CARD_RESET:
1318 handle_event(skt, event);
1322 pcmcia_put_socket(s);
1328 struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev)
1330 struct pcmcia_device *p_dev;
1331 struct pcmcia_device *ret = NULL;
1333 p_dev = pcmcia_get_dev(_p_dev);
1337 mutex_lock(&p_dev->socket->ops_mutex);
1338 if (!p_dev->socket->pcmcia_state.present)
1341 if (p_dev->socket->pcmcia_state.dead)
1344 if (p_dev->_removed)
1347 if (p_dev->suspended)
1352 mutex_unlock(&p_dev->socket->ops_mutex);
1353 pcmcia_put_dev(p_dev);
1356 EXPORT_SYMBOL(pcmcia_dev_present);
1359 static struct pcmcia_callback pcmcia_bus_callback = {
1360 .owner = THIS_MODULE,
1362 .requery = pcmcia_bus_rescan,
1363 .validate = pccard_validate_cis,
1364 .suspend = pcmcia_bus_suspend,
1365 .resume = pcmcia_bus_resume,
1368 static int __devinit pcmcia_bus_add_socket(struct device *dev,
1369 struct class_interface *class_intf)
1371 struct pcmcia_socket *socket = dev_get_drvdata(dev);
1374 socket = pcmcia_get_socket(socket);
1376 dev_printk(KERN_ERR, dev,
1377 "PCMCIA obtaining reference to socket failed\n");
1382 * Ugly. But we want to wait for the socket threads to have started up.
1383 * We really should let the drivers themselves drive some of this..
1387 ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
1389 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
1390 pcmcia_put_socket(socket);
1394 #ifdef CONFIG_PCMCIA_IOCTL
1395 init_waitqueue_head(&socket->queue);
1397 INIT_LIST_HEAD(&socket->devices_list);
1398 INIT_WORK(&socket->device_add, pcmcia_delayed_add_device);
1399 memset(&socket->pcmcia_state, 0, sizeof(u8));
1400 socket->device_count = 0;
1402 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1404 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
1405 pcmcia_put_socket(socket);
1412 static void pcmcia_bus_remove_socket(struct device *dev,
1413 struct class_interface *class_intf)
1415 struct pcmcia_socket *socket = dev_get_drvdata(dev);
1420 mutex_lock(&socket->ops_mutex);
1421 socket->pcmcia_state.dead = 1;
1422 mutex_unlock(&socket->ops_mutex);
1424 pccard_register_pcmcia(socket, NULL);
1426 /* unregister any unbound devices */
1427 mutex_lock(&socket->skt_mutex);
1428 pcmcia_card_remove(socket, NULL);
1429 release_cis_mem(socket);
1430 mutex_unlock(&socket->skt_mutex);
1432 sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr);
1434 pcmcia_put_socket(socket);
1440 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1441 static struct class_interface pcmcia_bus_interface __refdata = {
1442 .class = &pcmcia_socket_class,
1443 .add_dev = &pcmcia_bus_add_socket,
1444 .remove_dev = &pcmcia_bus_remove_socket,
1448 struct bus_type pcmcia_bus_type = {
1450 .uevent = pcmcia_bus_uevent,
1451 .match = pcmcia_bus_match,
1452 .dev_attrs = pcmcia_dev_attrs,
1453 .probe = pcmcia_device_probe,
1454 .remove = pcmcia_device_remove,
1455 .suspend = pcmcia_dev_suspend,
1456 .resume = pcmcia_dev_resume,
1460 static int __init init_pcmcia_bus(void)
1464 ret = bus_register(&pcmcia_bus_type);
1466 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret);
1469 ret = class_interface_register(&pcmcia_bus_interface);
1472 "pcmcia: class_interface_register error: %d\n", ret);
1473 bus_unregister(&pcmcia_bus_type);
1477 pcmcia_setup_ioctl();
1481 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1482 * pcmcia_socket_class is already registered */
1485 static void __exit exit_pcmcia_bus(void)
1487 pcmcia_cleanup_ioctl();
1489 class_interface_unregister(&pcmcia_bus_interface);
1491 bus_unregister(&pcmcia_bus_type);
1493 module_exit(exit_pcmcia_bus);