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"
35 #include "ds_internal.h"
37 /*====================================================================*/
39 /* Module parameters */
41 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
42 MODULE_DESCRIPTION("PCMCIA Driver Services");
43 MODULE_LICENSE("GPL");
45 #ifdef CONFIG_PCMCIA_DEBUG
48 module_param_named(pc_debug, ds_pc_debug, int, 0644);
50 #define ds_dbg(lvl, fmt, arg...) do { \
51 if (ds_pc_debug > (lvl)) \
52 printk(KERN_DEBUG "ds: " fmt , ## arg); \
54 #define ds_dev_dbg(lvl, dev, fmt, arg...) do { \
55 if (ds_pc_debug > (lvl)) \
56 dev_printk(KERN_DEBUG, dev, "ds: " fmt , ## arg); \
59 #define ds_dbg(lvl, fmt, arg...) do { } while (0)
60 #define ds_dev_dbg(lvl, dev, fmt, arg...) do { } while (0)
63 spinlock_t pcmcia_dev_list_lock;
65 /*====================================================================*/
67 /* code which was in cs.c before */
69 /* String tables for error messages */
71 typedef struct lookup_t {
76 static const lookup_t error_table[] = {
77 { CS_SUCCESS, "Operation succeeded" },
78 { CS_BAD_ATTRIBUTE, "Bad attribute", },
79 { CS_BAD_BASE, "Bad base address" },
80 { CS_BAD_IRQ, "Bad IRQ" },
81 { CS_BAD_OFFSET, "Bad offset" },
82 { CS_BAD_PAGE, "Bad page number" },
83 { CS_BAD_SIZE, "Bad size" },
84 { CS_BAD_TYPE, "Bad type" },
85 { -EIO, "Input/Output error" },
86 { -ENODEV, "No card present" },
87 { -EINVAL, "Bad parameter" },
88 { CS_BAD_ARGS, "Bad arguments" },
89 { CS_CONFIGURATION_LOCKED, "Configuration locked" },
90 { CS_IN_USE, "Resource in use" },
91 { CS_NO_MORE_ITEMS, "No more items" },
92 { CS_OUT_OF_RESOURCE, "Out of resource" },
93 { CS_BAD_HANDLE, "Bad handle" },
94 { CS_BAD_TUPLE, "Bad CIS tuple" }
98 static const lookup_t service_table[] = {
99 { AccessConfigurationRegister, "AccessConfigurationRegister" },
100 { AddSocketServices, "AddSocketServices" },
101 { AdjustResourceInfo, "AdjustResourceInfo" },
102 { CheckEraseQueue, "CheckEraseQueue" },
103 { CloseMemory, "CloseMemory" },
104 { DeregisterClient, "DeregisterClient" },
105 { DeregisterEraseQueue, "DeregisterEraseQueue" },
106 { GetCardServicesInfo, "GetCardServicesInfo" },
107 { GetClientInfo, "GetClientInfo" },
108 { GetConfigurationInfo, "GetConfigurationInfo" },
109 { GetEventMask, "GetEventMask" },
110 { GetFirstClient, "GetFirstClient" },
111 { GetFirstRegion, "GetFirstRegion" },
112 { GetFirstTuple, "GetFirstTuple" },
113 { GetNextClient, "GetNextClient" },
114 { GetNextRegion, "GetNextRegion" },
115 { GetNextTuple, "GetNextTuple" },
116 { GetStatus, "GetStatus" },
117 { GetTupleData, "GetTupleData" },
118 { MapMemPage, "MapMemPage" },
119 { ModifyConfiguration, "ModifyConfiguration" },
120 { ModifyWindow, "ModifyWindow" },
121 { OpenMemory, "OpenMemory" },
122 { ParseTuple, "ParseTuple" },
123 { ReadMemory, "ReadMemory" },
124 { RegisterClient, "RegisterClient" },
125 { RegisterEraseQueue, "RegisterEraseQueue" },
126 { RegisterMTD, "RegisterMTD" },
127 { ReleaseConfiguration, "ReleaseConfiguration" },
128 { ReleaseIO, "ReleaseIO" },
129 { ReleaseIRQ, "ReleaseIRQ" },
130 { ReleaseWindow, "ReleaseWindow" },
131 { RequestConfiguration, "RequestConfiguration" },
132 { RequestIO, "RequestIO" },
133 { RequestIRQ, "RequestIRQ" },
134 { RequestSocketMask, "RequestSocketMask" },
135 { RequestWindow, "RequestWindow" },
136 { ResetCard, "ResetCard" },
137 { SetEventMask, "SetEventMask" },
138 { ValidateCIS, "ValidateCIS" },
139 { WriteMemory, "WriteMemory" },
140 { BindDevice, "BindDevice" },
141 { BindMTD, "BindMTD" },
142 { ReportError, "ReportError" },
143 { SuspendCard, "SuspendCard" },
144 { ResumeCard, "ResumeCard" },
145 { EjectCard, "EjectCard" },
146 { InsertCard, "InsertCard" },
147 { ReplaceCIS, "ReplaceCIS" }
151 static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err)
159 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
161 for (i = 0; i < ARRAY_SIZE(service_table); i++)
162 if (service_table[i].key == err->func)
164 if (i < ARRAY_SIZE(service_table))
165 serv = service_table[i].msg;
167 serv = "Unknown service number";
169 for (i = 0; i < ARRAY_SIZE(error_table); i++)
170 if (error_table[i].key == err->retcode)
172 if (i < ARRAY_SIZE(error_table))
173 printk("%s: %s\n", serv, error_table[i].msg);
175 printk("%s: Unknown error code %#x\n", serv, err->retcode);
180 /* end of code which was in cs.c before */
182 /*======================================================================*/
184 void cs_error(struct pcmcia_device *p_dev, int func, int ret)
186 error_info_t err = { func, ret };
187 pcmcia_report_error(p_dev, &err);
189 EXPORT_SYMBOL(cs_error);
192 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
194 struct pcmcia_device_id *did = p_drv->id_table;
198 if (!p_drv->probe || !p_drv->remove)
199 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
200 "function\n", p_drv->drv.name);
202 while (did && did->match_flags) {
203 for (i=0; i<4; i++) {
204 if (!did->prod_id[i])
207 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
208 if (hash == did->prod_id_hash[i])
211 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
212 "product string \"%s\": is 0x%x, should "
213 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
214 did->prod_id_hash[i], hash);
215 printk(KERN_DEBUG "pcmcia: see "
216 "Documentation/pcmcia/devicetable.txt for "
226 /*======================================================================*/
229 struct pcmcia_dynid {
230 struct list_head node;
231 struct pcmcia_device_id id;
235 * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices
236 * @driver: target device driver
237 * @buf: buffer for scanning device ID data
240 * Adds a new dynamic PCMCIA device ID to this driver,
241 * and causes the driver to probe for all devices again.
244 pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count)
246 struct pcmcia_dynid *dynid;
247 struct pcmcia_driver *pdrv = to_pcmcia_drv(driver);
248 __u16 match_flags, manf_id, card_id;
249 __u8 func_id, function, device_no;
250 __u32 prod_id_hash[4] = {0, 0, 0, 0};
254 fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
255 &match_flags, &manf_id, &card_id, &func_id, &function, &device_no,
256 &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]);
260 dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL);
264 INIT_LIST_HEAD(&dynid->node);
265 dynid->id.match_flags = match_flags;
266 dynid->id.manf_id = manf_id;
267 dynid->id.card_id = card_id;
268 dynid->id.func_id = func_id;
269 dynid->id.function = function;
270 dynid->id.device_no = device_no;
271 memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4);
273 spin_lock(&pdrv->dynids.lock);
274 list_add_tail(&pdrv->dynids.list, &dynid->node);
275 spin_unlock(&pdrv->dynids.lock);
277 if (get_driver(&pdrv->drv)) {
278 retval = driver_attach(&pdrv->drv);
279 put_driver(&pdrv->drv);
286 static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id);
289 pcmcia_free_dynids(struct pcmcia_driver *drv)
291 struct pcmcia_dynid *dynid, *n;
293 spin_lock(&drv->dynids.lock);
294 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
295 list_del(&dynid->node);
298 spin_unlock(&drv->dynids.lock);
302 pcmcia_create_newid_file(struct pcmcia_driver *drv)
305 if (drv->probe != NULL)
306 error = driver_create_file(&drv->drv, &driver_attr_new_id);
312 * pcmcia_register_driver - register a PCMCIA driver with the bus core
313 * @driver: the &driver being registered
315 * Registers a PCMCIA driver with the PCMCIA bus core.
317 int pcmcia_register_driver(struct pcmcia_driver *driver)
324 pcmcia_check_driver(driver);
326 /* initialize common fields */
327 driver->drv.bus = &pcmcia_bus_type;
328 driver->drv.owner = driver->owner;
329 spin_lock_init(&driver->dynids.lock);
330 INIT_LIST_HEAD(&driver->dynids.list);
332 ds_dbg(3, "registering driver %s\n", driver->drv.name);
334 error = driver_register(&driver->drv);
338 error = pcmcia_create_newid_file(driver);
340 driver_unregister(&driver->drv);
344 EXPORT_SYMBOL(pcmcia_register_driver);
347 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
348 * @driver: the &driver being unregistered
350 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
352 ds_dbg(3, "unregistering driver %s\n", driver->drv.name);
353 driver_unregister(&driver->drv);
354 pcmcia_free_dynids(driver);
356 EXPORT_SYMBOL(pcmcia_unregister_driver);
359 /* pcmcia_device handling */
361 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
363 struct device *tmp_dev;
364 tmp_dev = get_device(&p_dev->dev);
367 return to_pcmcia_dev(tmp_dev);
370 void pcmcia_put_dev(struct pcmcia_device *p_dev)
373 put_device(&p_dev->dev);
376 static void pcmcia_release_function(struct kref *ref)
378 struct config_t *c = container_of(ref, struct config_t, ref);
379 ds_dbg(1, "releasing config_t\n");
383 static void pcmcia_release_dev(struct device *dev)
385 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
386 ds_dev_dbg(1, dev, "releasing device\n");
387 pcmcia_put_socket(p_dev->socket);
388 kfree(p_dev->devname);
389 kref_put(&p_dev->function_config->ref, pcmcia_release_function);
393 static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc)
395 if (!s->pcmcia_state.device_add_pending) {
396 ds_dev_dbg(1, &s->dev, "scheduling to add %s secondary"
397 " device to %d\n", mfc ? "mfc" : "pfc", s->sock);
398 s->pcmcia_state.device_add_pending = 1;
399 s->pcmcia_state.mfc_pfc = mfc;
400 schedule_work(&s->device_add);
405 static int pcmcia_device_probe(struct device * dev)
407 struct pcmcia_device *p_dev;
408 struct pcmcia_driver *p_drv;
409 struct pcmcia_device_id *did;
410 struct pcmcia_socket *s;
411 cistpl_config_t cis_config;
414 dev = get_device(dev);
418 p_dev = to_pcmcia_dev(dev);
419 p_drv = to_pcmcia_drv(dev->driver);
422 ds_dev_dbg(1, dev, "trying to bind to %s\n", p_drv->drv.name);
424 if ((!p_drv->probe) || (!p_dev->function_config) ||
425 (!try_module_get(p_drv->owner))) {
430 /* set up some more device information */
431 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG,
434 p_dev->conf.ConfigBase = cis_config.base;
435 p_dev->conf.Present = cis_config.rmask[0];
437 dev_printk(KERN_INFO, dev,
438 "pcmcia: could not parse base and rmask0 of CIS\n");
439 p_dev->conf.ConfigBase = 0;
440 p_dev->conf.Present = 0;
443 ret = p_drv->probe(p_dev);
445 ds_dev_dbg(1, dev, "binding to %s failed with %d\n",
446 p_drv->drv.name, ret);
450 /* handle pseudo multifunction devices:
451 * there are at most two pseudo multifunction devices.
452 * if we're matching against the first, schedule a
453 * call which will then check whether there are two
454 * pseudo devices, and if not, add the second one.
456 did = p_dev->dev.driver_data;
457 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
458 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
459 pcmcia_add_device_later(p_dev->socket, 0);
463 module_put(p_drv->owner);
472 * Removes a PCMCIA card from the device tree and socket list.
474 static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
476 struct pcmcia_device *p_dev;
477 struct pcmcia_device *tmp;
480 ds_dev_dbg(2, leftover ? &leftover->dev : &s->dev,
481 "pcmcia_card_remove(%d) %s\n", s->sock,
482 leftover ? leftover->devname : "");
489 /* unregister all pcmcia_devices registered with this socket, except leftover */
490 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
491 if (p_dev == leftover)
494 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
495 list_del(&p_dev->socket_device_list);
497 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
499 ds_dev_dbg(2, &p_dev->dev, "unregistering device\n");
500 device_unregister(&p_dev->dev);
506 static int pcmcia_device_remove(struct device * dev)
508 struct pcmcia_device *p_dev;
509 struct pcmcia_driver *p_drv;
510 struct pcmcia_device_id *did;
513 p_dev = to_pcmcia_dev(dev);
514 p_drv = to_pcmcia_drv(dev->driver);
516 ds_dev_dbg(1, dev, "removing device\n");
518 /* If we're removing the primary module driving a
519 * pseudo multi-function card, we need to unbind
522 did = p_dev->dev.driver_data;
523 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
524 (p_dev->socket->device_count != 0) &&
525 (p_dev->device_no == 0))
526 pcmcia_card_remove(p_dev->socket, p_dev);
528 /* detach the "instance" */
533 p_drv->remove(p_dev);
535 p_dev->dev_node = NULL;
537 /* check for proper unloading */
538 if (p_dev->_irq || p_dev->_io || p_dev->_locked)
539 dev_printk(KERN_INFO, dev,
540 "pcmcia: driver %s did not release config properly\n",
543 for (i = 0; i < MAX_WIN; i++)
544 if (p_dev->_win & CLIENT_WIN_REQ(i))
545 dev_printk(KERN_INFO, dev,
546 "pcmcia: driver %s did not release window properly\n",
549 /* references from pcmcia_probe_device */
550 pcmcia_put_dev(p_dev);
551 module_put(p_drv->owner);
558 * pcmcia_device_query -- determine information about a pcmcia device
560 static int pcmcia_device_query(struct pcmcia_device *p_dev)
562 cistpl_manfid_t manf_id;
563 cistpl_funcid_t func_id;
564 cistpl_vers_1_t *vers1;
567 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
571 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
572 CISTPL_MANFID, &manf_id)) {
573 p_dev->manf_id = manf_id.manf;
574 p_dev->card_id = manf_id.card;
575 p_dev->has_manf_id = 1;
576 p_dev->has_card_id = 1;
579 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
580 CISTPL_FUNCID, &func_id)) {
581 p_dev->func_id = func_id.func;
582 p_dev->has_func_id = 1;
584 /* rule of thumb: cards with no FUNCID, but with
585 * common memory device geometry information, are
586 * probably memory cards (from pcmcia-cs) */
587 cistpl_device_geo_t *devgeo;
589 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
594 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
595 CISTPL_DEVICE_GEO, devgeo)) {
596 ds_dev_dbg(0, &p_dev->dev,
597 "mem device geometry probably means "
599 p_dev->func_id = CISTPL_FUNCID_MEMORY;
600 p_dev->has_func_id = 1;
605 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
607 for (i=0; i < vers1->ns; i++) {
611 tmp = vers1->str + vers1->ofs[i];
613 length = strlen(tmp) + 1;
614 if ((length < 2) || (length > 255))
617 p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
619 if (!p_dev->prod_id[i])
622 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
632 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
633 * Serializes pcmcia_device_add; will most likely be removed in future.
635 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
636 * won't work, this doesn't matter much at the moment: the driver core doesn't
639 static DEFINE_MUTEX(device_add_lock);
641 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
643 struct pcmcia_device *p_dev, *tmp_dev;
647 s = pcmcia_get_socket(s);
651 mutex_lock(&device_add_lock);
653 ds_dbg(3, "adding device to %d, function %d\n", s->sock, function);
655 /* max of 4 devices per card */
656 if (s->device_count == 4)
659 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
664 p_dev->device_no = (s->device_count++);
665 p_dev->func = function;
667 p_dev->dev.bus = &pcmcia_bus_type;
668 p_dev->dev.parent = s->dev.parent;
669 p_dev->dev.release = pcmcia_release_dev;
670 /* by default don't allow DMA */
671 p_dev->dma_mask = DMA_MASK_NONE;
672 p_dev->dev.dma_mask = &p_dev->dma_mask;
673 bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
675 p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL);
678 sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id);
679 ds_dev_dbg(3, &p_dev->dev, "devname is %s\n", p_dev->devname);
681 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
684 * p_dev->function_config must be the same for all card functions.
685 * Note that this is serialized by the device_add_lock, so that
686 * only one such struct will be created.
688 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
689 if (p_dev->func == tmp_dev->func) {
690 p_dev->function_config = tmp_dev->function_config;
691 kref_get(&p_dev->function_config->ref);
694 /* Add to the list in pcmcia_bus_socket */
695 list_add(&p_dev->socket_device_list, &s->devices_list);
697 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
699 if (!p_dev->function_config) {
700 ds_dev_dbg(3, &p_dev->dev, "creating config_t\n");
701 p_dev->function_config = kzalloc(sizeof(struct config_t),
703 if (!p_dev->function_config)
705 kref_init(&p_dev->function_config->ref);
708 dev_printk(KERN_NOTICE, &p_dev->dev,
709 "pcmcia: registering new device %s\n",
712 pcmcia_device_query(p_dev);
714 if (device_register(&p_dev->dev))
717 mutex_unlock(&device_add_lock);
722 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
723 list_del(&p_dev->socket_device_list);
724 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
727 kfree(p_dev->devname);
731 mutex_unlock(&device_add_lock);
732 pcmcia_put_socket(s);
738 static int pcmcia_card_add(struct pcmcia_socket *s)
740 cistpl_longlink_mfc_t mfc;
741 unsigned int no_funcs, i, no_chains;
744 if (!(s->resource_setup_done)) {
745 ds_dev_dbg(3, &s->dev,
746 "no resources available, delaying card_add\n");
747 return -EAGAIN; /* try again, but later... */
750 if (pcmcia_validate_mem(s)) {
751 ds_dev_dbg(3, &s->dev, "validating mem resources failed, "
752 "delaying card_add\n");
753 return -EAGAIN; /* try again, but later... */
756 ret = pccard_validate_cis(s, BIND_FN_ALL, &no_chains);
757 if (ret || !no_chains) {
758 ds_dev_dbg(0, &s->dev, "invalid CIS or invalid resources\n");
762 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
766 s->functions = no_funcs;
768 for (i=0; i < no_funcs; i++)
769 pcmcia_device_add(s, i);
775 static void pcmcia_delayed_add_device(struct work_struct *work)
777 struct pcmcia_socket *s =
778 container_of(work, struct pcmcia_socket, device_add);
779 ds_dev_dbg(1, &s->dev, "adding additional device to %d\n", s->sock);
780 pcmcia_device_add(s, s->pcmcia_state.mfc_pfc);
781 s->pcmcia_state.device_add_pending = 0;
782 s->pcmcia_state.mfc_pfc = 0;
785 static int pcmcia_requery(struct device *dev, void * _data)
787 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
788 if (!p_dev->dev.driver) {
789 ds_dev_dbg(1, dev, "update device information\n");
790 pcmcia_device_query(p_dev);
796 static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis)
802 /* must be called with skt_mutex held */
803 ds_dev_dbg(0, &skt->dev, "re-scanning socket %d\n", skt->sock);
805 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
806 if (list_empty(&skt->devices_list))
808 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
810 /* If this is because of a CIS override, start over */
811 if (new_cis && !no_devices)
812 pcmcia_card_remove(skt, NULL);
814 /* if no devices were added for this socket yet because of
815 * missing resource information or other trouble, we need to
817 if (no_devices || new_cis) {
818 ret = pcmcia_card_add(skt);
823 /* some device information might have changed because of a CIS
824 * update or because we can finally read it correctly... so
825 * determine it again, overwriting old values if necessary. */
826 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
828 /* we re-scan all devices, not just the ones connected to this
829 * socket. This does not matter, though. */
830 ret = bus_rescan_devices(&pcmcia_bus_type);
832 printk(KERN_INFO "pcmcia: bus_rescan_devices failed\n");
835 #ifdef CONFIG_PCMCIA_LOAD_CIS
838 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
839 * @dev: the pcmcia device which needs a CIS override
840 * @filename: requested filename in /lib/firmware/
842 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
843 * the one provided by the card is broken. The firmware files reside in
844 * /lib/firmware/ in userspace.
846 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
848 struct pcmcia_socket *s = dev->socket;
849 const struct firmware *fw;
850 char path[FIRMWARE_NAME_MAX];
854 cistpl_longlink_mfc_t mfc;
859 ds_dev_dbg(1, &dev->dev, "trying to load CIS file %s\n", filename);
861 if (strlen(filename) > (FIRMWARE_NAME_MAX - 1)) {
862 dev_printk(KERN_WARNING, &dev->dev,
863 "pcmcia: CIS filename is too long [%s]\n",
868 snprintf(path, sizeof(path), "%s", filename);
870 if (request_firmware(&fw, path, &dev->dev) == 0) {
871 if (fw->size >= CISTPL_MAX_CIS_SIZE) {
873 dev_printk(KERN_ERR, &dev->dev,
874 "pcmcia: CIS override is too big\n");
878 if (!pcmcia_replace_cis(s, fw->data, fw->size))
881 dev_printk(KERN_ERR, &dev->dev,
882 "pcmcia: CIS override failed\n");
887 /* update information */
888 pcmcia_device_query(dev);
890 /* does this cis override add or remove functions? */
891 old_funcs = s->functions;
893 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
897 s->functions = no_funcs;
899 if (old_funcs > no_funcs)
900 pcmcia_card_remove(s, dev);
901 else if (no_funcs > old_funcs)
902 pcmcia_add_device_later(s, 1);
905 release_firmware(fw);
910 #else /* !CONFIG_PCMCIA_LOAD_CIS */
912 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
920 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
921 struct pcmcia_device_id *did)
923 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
924 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
928 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
929 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
933 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
934 if (dev->func != did->function)
938 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
939 if (!dev->prod_id[0])
941 if (strcmp(did->prod_id[0], dev->prod_id[0]))
945 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
946 if (!dev->prod_id[1])
948 if (strcmp(did->prod_id[1], dev->prod_id[1]))
952 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
953 if (!dev->prod_id[2])
955 if (strcmp(did->prod_id[2], dev->prod_id[2]))
959 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
960 if (!dev->prod_id[3])
962 if (strcmp(did->prod_id[3], dev->prod_id[3]))
966 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
967 if (dev->device_no != did->device_no)
971 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
972 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
975 /* if this is a pseudo-multi-function device,
976 * we need explicit matches */
977 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
982 /* also, FUNC_ID matching needs to be activated by userspace
983 * after it has re-checked that there is no possible module
984 * with a prod_id/manf_id/card_id match.
986 ds_dev_dbg(0, &dev->dev,
987 "skipping FUNC_ID match until userspace interaction\n");
988 if (!dev->allow_func_id_match)
992 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
993 ds_dev_dbg(0, &dev->dev, "device needs a fake CIS\n");
994 if (!dev->socket->fake_cis)
995 pcmcia_load_firmware(dev, did->cisfile);
997 if (!dev->socket->fake_cis)
1001 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
1004 if (dev->prod_id[i])
1006 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
1010 dev->dev.driver_data = (void *) did;
1016 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
1017 struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
1018 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
1019 struct pcmcia_device_id *did = p_drv->id_table;
1020 struct pcmcia_dynid *dynid;
1022 /* match dynamic devices first */
1023 spin_lock(&p_drv->dynids.lock);
1024 list_for_each_entry(dynid, &p_drv->dynids.list, node) {
1025 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name);
1026 if (pcmcia_devmatch(p_dev, &dynid->id)) {
1027 ds_dev_dbg(0, dev, "matched to %s\n", drv->name);
1028 spin_unlock(&p_drv->dynids.lock);
1032 spin_unlock(&p_drv->dynids.lock);
1034 #ifdef CONFIG_PCMCIA_IOCTL
1035 /* matching by cardmgr */
1036 if (p_dev->cardmgr == p_drv) {
1037 ds_dev_dbg(0, dev, "cardmgr matched to %s\n", drv->name);
1042 while (did && did->match_flags) {
1043 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name);
1044 if (pcmcia_devmatch(p_dev, did)) {
1045 ds_dev_dbg(0, dev, "matched to %s\n", drv->name);
1054 #ifdef CONFIG_HOTPLUG
1056 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
1058 struct pcmcia_device *p_dev;
1060 u32 hash[4] = { 0, 0, 0, 0};
1065 p_dev = to_pcmcia_dev(dev);
1067 /* calculate hashes */
1068 for (i=0; i<4; i++) {
1069 if (!p_dev->prod_id[i])
1071 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
1074 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock))
1077 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no))
1080 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1081 "pa%08Xpb%08Xpc%08Xpd%08X",
1082 p_dev->has_manf_id ? p_dev->manf_id : 0,
1083 p_dev->has_card_id ? p_dev->card_id : 0,
1084 p_dev->has_func_id ? p_dev->func_id : 0,
1098 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
1105 /************************ runtime PM support ***************************/
1107 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state);
1108 static int pcmcia_dev_resume(struct device *dev);
1110 static int runtime_suspend(struct device *dev)
1115 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND);
1120 static void runtime_resume(struct device *dev)
1125 rc = pcmcia_dev_resume(dev);
1129 /************************ per-device sysfs output ***************************/
1131 #define pcmcia_device_attr(field, test, format) \
1132 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1134 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1135 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
1138 #define pcmcia_device_stringattr(name, field) \
1139 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1141 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1142 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
1145 pcmcia_device_attr(func, socket, "0x%02x\n");
1146 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
1147 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
1148 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
1149 pcmcia_device_stringattr(prod_id1, prod_id[0]);
1150 pcmcia_device_stringattr(prod_id2, prod_id[1]);
1151 pcmcia_device_stringattr(prod_id3, prod_id[2]);
1152 pcmcia_device_stringattr(prod_id4, prod_id[3]);
1155 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf)
1157 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1159 if (p_dev->suspended)
1160 return sprintf(buf, "off\n");
1162 return sprintf(buf, "on\n");
1165 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr,
1166 const char *buf, size_t count)
1168 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1174 if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
1175 ret = runtime_suspend(dev);
1176 else if (p_dev->suspended && !strncmp(buf, "on", 2))
1177 runtime_resume(dev);
1179 return ret ? ret : count;
1183 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1185 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1187 u32 hash[4] = { 0, 0, 0, 0};
1189 /* calculate hashes */
1190 for (i=0; i<4; i++) {
1191 if (!p_dev->prod_id[i])
1193 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i]));
1195 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1196 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1197 p_dev->has_manf_id ? p_dev->manf_id : 0,
1198 p_dev->has_card_id ? p_dev->card_id : 0,
1199 p_dev->has_func_id ? p_dev->func_id : 0,
1200 p_dev->func, p_dev->device_no,
1201 hash[0], hash[1], hash[2], hash[3]);
1204 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
1205 struct device_attribute *attr, const char *buf, size_t count)
1207 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1213 mutex_lock(&p_dev->socket->skt_mutex);
1214 p_dev->allow_func_id_match = 1;
1215 mutex_unlock(&p_dev->socket->skt_mutex);
1217 ret = bus_rescan_devices(&pcmcia_bus_type);
1219 printk(KERN_INFO "pcmcia: bus_rescan_devices failed after "
1220 "allowing func_id matches\n");
1225 static struct device_attribute pcmcia_dev_attrs[] = {
1226 __ATTR(function, 0444, func_show, NULL),
1227 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state),
1231 __ATTR_RO(prod_id1),
1232 __ATTR_RO(prod_id2),
1233 __ATTR_RO(prod_id3),
1234 __ATTR_RO(prod_id4),
1235 __ATTR_RO(modalias),
1236 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
1240 /* PM support, also needed for reset */
1242 static int pcmcia_dev_suspend(struct device * dev, pm_message_t state)
1244 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1245 struct pcmcia_driver *p_drv = NULL;
1248 if (p_dev->suspended)
1251 ds_dev_dbg(2, dev, "suspending\n");
1254 p_drv = to_pcmcia_drv(dev->driver);
1259 if (p_drv->suspend) {
1260 ret = p_drv->suspend(p_dev);
1262 dev_printk(KERN_ERR, dev,
1263 "pcmcia: device %s (driver %s) did "
1264 "not want to go to sleep (%d)\n",
1265 p_dev->devname, p_drv->drv.name, ret);
1270 if (p_dev->device_no == p_dev->func) {
1271 ds_dev_dbg(2, dev, "releasing configuration\n");
1272 pcmcia_release_configuration(p_dev);
1277 p_dev->suspended = 1;
1282 static int pcmcia_dev_resume(struct device * dev)
1284 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1285 struct pcmcia_driver *p_drv = NULL;
1288 if (!p_dev->suspended)
1291 ds_dev_dbg(2, dev, "resuming\n");
1294 p_drv = to_pcmcia_drv(dev->driver);
1299 if (p_dev->device_no == p_dev->func) {
1300 ds_dev_dbg(2, dev, "requesting configuration\n");
1301 ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
1307 ret = p_drv->resume(p_dev);
1311 p_dev->suspended = 0;
1316 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
1318 struct pcmcia_socket *skt = _data;
1319 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1321 if (p_dev->socket != skt || p_dev->suspended)
1324 return runtime_suspend(dev);
1327 static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
1329 struct pcmcia_socket *skt = _data;
1330 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1332 if (p_dev->socket != skt || !p_dev->suspended)
1335 runtime_resume(dev);
1340 static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1342 ds_dev_dbg(2, &skt->dev, "resuming socket %d\n", skt->sock);
1343 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1347 static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1349 ds_dev_dbg(2, &skt->dev, "suspending socket %d\n", skt->sock);
1350 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1351 pcmcia_bus_suspend_callback)) {
1352 pcmcia_bus_resume(skt);
1359 /*======================================================================
1361 The card status event handler.
1363 ======================================================================*/
1365 /* Normally, the event is passed to individual drivers after
1366 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
1367 * is inversed to maintain historic compatibility.
1370 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
1372 struct pcmcia_socket *s = pcmcia_get_socket(skt);
1375 dev_printk(KERN_ERR, &skt->dev,
1376 "PCMCIA obtaining reference to socket " \
1377 "failed, event 0x%x lost!\n", event);
1381 ds_dev_dbg(1, &skt->dev, "ds_event(0x%06x, %d, 0x%p)\n",
1382 event, priority, skt);
1385 case CS_EVENT_CARD_REMOVAL:
1386 s->pcmcia_state.present = 0;
1387 pcmcia_card_remove(skt, NULL);
1388 handle_event(skt, event);
1391 case CS_EVENT_CARD_INSERTION:
1392 s->pcmcia_state.present = 1;
1393 pcmcia_card_add(skt);
1394 handle_event(skt, event);
1397 case CS_EVENT_EJECTION_REQUEST:
1400 case CS_EVENT_PM_SUSPEND:
1401 case CS_EVENT_PM_RESUME:
1402 case CS_EVENT_RESET_PHYSICAL:
1403 case CS_EVENT_CARD_RESET:
1405 handle_event(skt, event);
1409 pcmcia_put_socket(s);
1415 struct pcmcia_device * pcmcia_dev_present(struct pcmcia_device *_p_dev)
1417 struct pcmcia_device *p_dev;
1418 struct pcmcia_device *ret = NULL;
1420 p_dev = pcmcia_get_dev(_p_dev);
1424 if (!p_dev->socket->pcmcia_state.present)
1427 if (p_dev->_removed)
1430 if (p_dev->suspended)
1435 pcmcia_put_dev(p_dev);
1438 EXPORT_SYMBOL(pcmcia_dev_present);
1441 static struct pcmcia_callback pcmcia_bus_callback = {
1442 .owner = THIS_MODULE,
1444 .requery = pcmcia_bus_rescan,
1445 .suspend = pcmcia_bus_suspend,
1446 .resume = pcmcia_bus_resume,
1449 static int __devinit pcmcia_bus_add_socket(struct device *dev,
1450 struct class_interface *class_intf)
1452 struct pcmcia_socket *socket = dev_get_drvdata(dev);
1455 socket = pcmcia_get_socket(socket);
1457 dev_printk(KERN_ERR, dev,
1458 "PCMCIA obtaining reference to socket failed\n");
1463 * Ugly. But we want to wait for the socket threads to have started up.
1464 * We really should let the drivers themselves drive some of this..
1468 #ifdef CONFIG_PCMCIA_IOCTL
1469 init_waitqueue_head(&socket->queue);
1471 INIT_LIST_HEAD(&socket->devices_list);
1472 INIT_WORK(&socket->device_add, pcmcia_delayed_add_device);
1473 memset(&socket->pcmcia_state, 0, sizeof(u8));
1474 socket->device_count = 0;
1476 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1478 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n");
1479 pcmcia_put_socket(socket);
1486 static void pcmcia_bus_remove_socket(struct device *dev,
1487 struct class_interface *class_intf)
1489 struct pcmcia_socket *socket = dev_get_drvdata(dev);
1494 socket->pcmcia_state.dead = 1;
1495 pccard_register_pcmcia(socket, NULL);
1497 /* unregister any unbound devices */
1498 mutex_lock(&socket->skt_mutex);
1499 pcmcia_card_remove(socket, NULL);
1500 mutex_unlock(&socket->skt_mutex);
1502 pcmcia_put_socket(socket);
1508 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1509 static struct class_interface pcmcia_bus_interface __refdata = {
1510 .class = &pcmcia_socket_class,
1511 .add_dev = &pcmcia_bus_add_socket,
1512 .remove_dev = &pcmcia_bus_remove_socket,
1516 struct bus_type pcmcia_bus_type = {
1518 .uevent = pcmcia_bus_uevent,
1519 .match = pcmcia_bus_match,
1520 .dev_attrs = pcmcia_dev_attrs,
1521 .probe = pcmcia_device_probe,
1522 .remove = pcmcia_device_remove,
1523 .suspend = pcmcia_dev_suspend,
1524 .resume = pcmcia_dev_resume,
1528 static int __init init_pcmcia_bus(void)
1532 spin_lock_init(&pcmcia_dev_list_lock);
1534 ret = bus_register(&pcmcia_bus_type);
1536 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret);
1539 ret = class_interface_register(&pcmcia_bus_interface);
1542 "pcmcia: class_interface_register error: %d\n", ret);
1543 bus_unregister(&pcmcia_bus_type);
1547 pcmcia_setup_ioctl();
1551 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1552 * pcmcia_socket_class is already registered */
1555 static void __exit exit_pcmcia_bus(void)
1557 pcmcia_cleanup_ioctl();
1559 class_interface_unregister(&pcmcia_bus_interface);
1561 bus_unregister(&pcmcia_bus_type);
1563 module_exit(exit_pcmcia_bus);