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>
27 #define IN_CARD_SERVICES
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");
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); \
55 #define ds_dbg(lvl, fmt, arg...) do { } while (0)
58 spinlock_t pcmcia_dev_list_lock;
60 /*====================================================================*/
62 /* code which was in cs.c before */
64 /* String tables for error messages */
66 typedef struct lookup_t {
71 static const lookup_t error_table[] = {
72 { CS_SUCCESS, "Operation succeeded" },
73 { CS_BAD_ADAPTER, "Bad adapter" },
74 { CS_BAD_ATTRIBUTE, "Bad attribute", },
75 { CS_BAD_BASE, "Bad base address" },
76 { CS_BAD_EDC, "Bad EDC" },
77 { CS_BAD_IRQ, "Bad IRQ" },
78 { CS_BAD_OFFSET, "Bad offset" },
79 { CS_BAD_PAGE, "Bad page number" },
80 { CS_READ_FAILURE, "Read failure" },
81 { CS_BAD_SIZE, "Bad size" },
82 { CS_BAD_SOCKET, "Bad socket" },
83 { CS_BAD_TYPE, "Bad type" },
84 { CS_BAD_VCC, "Bad Vcc" },
85 { CS_BAD_VPP, "Bad Vpp" },
86 { CS_BAD_WINDOW, "Bad window" },
87 { CS_WRITE_FAILURE, "Write failure" },
88 { CS_NO_CARD, "No card present" },
89 { CS_UNSUPPORTED_FUNCTION, "Usupported function" },
90 { CS_UNSUPPORTED_MODE, "Unsupported mode" },
91 { CS_BAD_SPEED, "Bad speed" },
92 { CS_BUSY, "Resource busy" },
93 { CS_GENERAL_FAILURE, "General failure" },
94 { CS_WRITE_PROTECTED, "Write protected" },
95 { CS_BAD_ARG_LENGTH, "Bad argument length" },
96 { CS_BAD_ARGS, "Bad arguments" },
97 { CS_CONFIGURATION_LOCKED, "Configuration locked" },
98 { CS_IN_USE, "Resource in use" },
99 { CS_NO_MORE_ITEMS, "No more items" },
100 { CS_OUT_OF_RESOURCE, "Out of resource" },
101 { CS_BAD_HANDLE, "Bad handle" },
102 { CS_BAD_TUPLE, "Bad CIS tuple" }
106 static const lookup_t service_table[] = {
107 { AccessConfigurationRegister, "AccessConfigurationRegister" },
108 { AddSocketServices, "AddSocketServices" },
109 { AdjustResourceInfo, "AdjustResourceInfo" },
110 { CheckEraseQueue, "CheckEraseQueue" },
111 { CloseMemory, "CloseMemory" },
112 { DeregisterClient, "DeregisterClient" },
113 { DeregisterEraseQueue, "DeregisterEraseQueue" },
114 { GetCardServicesInfo, "GetCardServicesInfo" },
115 { GetClientInfo, "GetClientInfo" },
116 { GetConfigurationInfo, "GetConfigurationInfo" },
117 { GetEventMask, "GetEventMask" },
118 { GetFirstClient, "GetFirstClient" },
119 { GetFirstRegion, "GetFirstRegion" },
120 { GetFirstTuple, "GetFirstTuple" },
121 { GetNextClient, "GetNextClient" },
122 { GetNextRegion, "GetNextRegion" },
123 { GetNextTuple, "GetNextTuple" },
124 { GetStatus, "GetStatus" },
125 { GetTupleData, "GetTupleData" },
126 { MapMemPage, "MapMemPage" },
127 { ModifyConfiguration, "ModifyConfiguration" },
128 { ModifyWindow, "ModifyWindow" },
129 { OpenMemory, "OpenMemory" },
130 { ParseTuple, "ParseTuple" },
131 { ReadMemory, "ReadMemory" },
132 { RegisterClient, "RegisterClient" },
133 { RegisterEraseQueue, "RegisterEraseQueue" },
134 { RegisterMTD, "RegisterMTD" },
135 { ReleaseConfiguration, "ReleaseConfiguration" },
136 { ReleaseIO, "ReleaseIO" },
137 { ReleaseIRQ, "ReleaseIRQ" },
138 { ReleaseWindow, "ReleaseWindow" },
139 { RequestConfiguration, "RequestConfiguration" },
140 { RequestIO, "RequestIO" },
141 { RequestIRQ, "RequestIRQ" },
142 { RequestSocketMask, "RequestSocketMask" },
143 { RequestWindow, "RequestWindow" },
144 { ResetCard, "ResetCard" },
145 { SetEventMask, "SetEventMask" },
146 { ValidateCIS, "ValidateCIS" },
147 { WriteMemory, "WriteMemory" },
148 { BindDevice, "BindDevice" },
149 { BindMTD, "BindMTD" },
150 { ReportError, "ReportError" },
151 { SuspendCard, "SuspendCard" },
152 { ResumeCard, "ResumeCard" },
153 { EjectCard, "EjectCard" },
154 { InsertCard, "InsertCard" },
155 { ReplaceCIS, "ReplaceCIS" }
159 static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err)
167 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
169 for (i = 0; i < ARRAY_SIZE(service_table); i++)
170 if (service_table[i].key == err->func)
172 if (i < ARRAY_SIZE(service_table))
173 serv = service_table[i].msg;
175 serv = "Unknown service number";
177 for (i = 0; i < ARRAY_SIZE(error_table); i++)
178 if (error_table[i].key == err->retcode)
180 if (i < ARRAY_SIZE(error_table))
181 printk("%s: %s\n", serv, error_table[i].msg);
183 printk("%s: Unknown error code %#x\n", serv, err->retcode);
188 /* end of code which was in cs.c before */
190 /*======================================================================*/
192 void cs_error(struct pcmcia_device *p_dev, int func, int ret)
194 error_info_t err = { func, ret };
195 pcmcia_report_error(p_dev, &err);
197 EXPORT_SYMBOL(cs_error);
200 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
202 struct pcmcia_device_id *did = p_drv->id_table;
206 if (!p_drv->probe || !p_drv->remove)
207 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
208 "function\n", p_drv->drv.name);
210 while (did && did->match_flags) {
211 for (i=0; i<4; i++) {
212 if (!did->prod_id[i])
215 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
216 if (hash == did->prod_id_hash[i])
219 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
220 "product string \"%s\": is 0x%x, should "
221 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
222 did->prod_id_hash[i], hash);
223 printk(KERN_DEBUG "pcmcia: see "
224 "Documentation/pcmcia/devicetable.txt for "
234 /*======================================================================*/
238 * pcmcia_register_driver - register a PCMCIA driver with the bus core
240 * Registers a PCMCIA driver with the PCMCIA bus core.
242 int pcmcia_register_driver(struct pcmcia_driver *driver)
247 pcmcia_check_driver(driver);
249 /* initialize common fields */
250 driver->drv.bus = &pcmcia_bus_type;
251 driver->drv.owner = driver->owner;
253 return driver_register(&driver->drv);
255 EXPORT_SYMBOL(pcmcia_register_driver);
258 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
260 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
262 driver_unregister(&driver->drv);
264 EXPORT_SYMBOL(pcmcia_unregister_driver);
267 /* pcmcia_device handling */
269 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
271 struct device *tmp_dev;
272 tmp_dev = get_device(&p_dev->dev);
275 return to_pcmcia_dev(tmp_dev);
278 void pcmcia_put_dev(struct pcmcia_device *p_dev)
281 put_device(&p_dev->dev);
284 static void pcmcia_release_function(struct kref *ref)
286 struct config_t *c = container_of(ref, struct config_t, ref);
290 static void pcmcia_release_dev(struct device *dev)
292 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
293 ds_dbg(1, "releasing dev %p\n", p_dev);
294 pcmcia_put_socket(p_dev->socket);
295 kfree(p_dev->devname);
296 kref_put(&p_dev->function_config->ref, pcmcia_release_function);
300 static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc)
302 if (!s->pcmcia_state.device_add_pending) {
303 s->pcmcia_state.device_add_pending = 1;
304 s->pcmcia_state.mfc_pfc = mfc;
305 schedule_work(&s->device_add);
310 static int pcmcia_device_probe(struct device * dev)
312 struct pcmcia_device *p_dev;
313 struct pcmcia_driver *p_drv;
314 struct pcmcia_device_id *did;
315 struct pcmcia_socket *s;
316 cistpl_config_t cis_config;
319 dev = get_device(dev);
323 p_dev = to_pcmcia_dev(dev);
324 p_drv = to_pcmcia_drv(dev->driver);
327 if ((!p_drv->probe) || (!p_dev->function_config) ||
328 (!try_module_get(p_drv->owner))) {
333 /* set up some more device information */
334 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG,
337 p_dev->conf.ConfigBase = cis_config.base;
338 p_dev->conf.Present = cis_config.rmask[0];
340 printk(KERN_INFO "pcmcia: could not parse base and rmask0 of CIS\n");
341 p_dev->conf.ConfigBase = 0;
342 p_dev->conf.Present = 0;
345 ret = p_drv->probe(p_dev);
349 /* handle pseudo multifunction devices:
350 * there are at most two pseudo multifunction devices.
351 * if we're matching against the first, schedule a
352 * call which will then check whether there are two
353 * pseudo devices, and if not, add the second one.
355 did = p_dev->dev.driver_data;
356 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
357 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
358 pcmcia_add_device_later(p_dev->socket, 0);
362 module_put(p_drv->owner);
371 * Removes a PCMCIA card from the device tree and socket list.
373 static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover)
375 struct pcmcia_device *p_dev;
376 struct pcmcia_device *tmp;
379 ds_dbg(2, "unbind_request(%d)\n", s->sock);
387 /* unregister all pcmcia_devices registered with this socket, except leftover */
388 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) {
389 if (p_dev == leftover)
392 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
393 list_del(&p_dev->socket_device_list);
395 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
397 device_unregister(&p_dev->dev);
403 static int pcmcia_device_remove(struct device * dev)
405 struct pcmcia_device *p_dev;
406 struct pcmcia_driver *p_drv;
407 struct pcmcia_device_id *did;
410 p_dev = to_pcmcia_dev(dev);
411 p_drv = to_pcmcia_drv(dev->driver);
413 /* If we're removing the primary module driving a
414 * pseudo multi-function card, we need to unbind
417 did = p_dev->dev.driver_data;
418 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
419 (p_dev->socket->device_count != 0) &&
420 (p_dev->device_no == 0))
421 pcmcia_card_remove(p_dev->socket, p_dev);
423 /* detach the "instance" */
428 p_drv->remove(p_dev);
430 p_dev->dev_node = NULL;
432 /* check for proper unloading */
433 if (p_dev->_irq || p_dev->_io || p_dev->_locked)
434 printk(KERN_INFO "pcmcia: driver %s did not release config properly\n",
437 for (i = 0; i < MAX_WIN; i++)
438 if (p_dev->_win & CLIENT_WIN_REQ(i))
439 printk(KERN_INFO "pcmcia: driver %s did not release windows properly\n",
442 /* references from pcmcia_probe_device */
443 pcmcia_put_dev(p_dev);
444 module_put(p_drv->owner);
451 * pcmcia_device_query -- determine information about a pcmcia device
453 static int pcmcia_device_query(struct pcmcia_device *p_dev)
455 cistpl_manfid_t manf_id;
456 cistpl_funcid_t func_id;
457 cistpl_vers_1_t *vers1;
460 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
464 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
465 CISTPL_MANFID, &manf_id)) {
466 p_dev->manf_id = manf_id.manf;
467 p_dev->card_id = manf_id.card;
468 p_dev->has_manf_id = 1;
469 p_dev->has_card_id = 1;
472 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
473 CISTPL_FUNCID, &func_id)) {
474 p_dev->func_id = func_id.func;
475 p_dev->has_func_id = 1;
477 /* rule of thumb: cards with no FUNCID, but with
478 * common memory device geometry information, are
479 * probably memory cards (from pcmcia-cs) */
480 cistpl_device_geo_t *devgeo;
482 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
487 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
488 CISTPL_DEVICE_GEO, devgeo)) {
489 ds_dbg(0, "mem device geometry probably means "
491 p_dev->func_id = CISTPL_FUNCID_MEMORY;
492 p_dev->has_func_id = 1;
497 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
499 for (i=0; i < vers1->ns; i++) {
503 tmp = vers1->str + vers1->ofs[i];
505 length = strlen(tmp) + 1;
506 if ((length < 2) || (length > 255))
509 p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
511 if (!p_dev->prod_id[i])
514 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
524 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
525 * Serializes pcmcia_device_add; will most likely be removed in future.
527 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
528 * won't work, this doesn't matter much at the moment: the driver core doesn't
531 static DEFINE_MUTEX(device_add_lock);
533 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
535 struct pcmcia_device *p_dev, *tmp_dev;
539 s = pcmcia_get_socket(s);
543 mutex_lock(&device_add_lock);
545 /* max of 4 devices per card */
546 if (s->device_count == 4)
549 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
554 p_dev->device_no = (s->device_count++);
555 p_dev->func = function;
557 p_dev->dev.bus = &pcmcia_bus_type;
558 p_dev->dev.parent = s->dev.dev;
559 p_dev->dev.release = pcmcia_release_dev;
560 bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
562 p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL);
565 sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id);
568 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
571 * p_dev->function_config must be the same for all card functions.
572 * Note that this is serialized by the device_add_lock, so that
573 * only one such struct will be created.
575 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
576 if (p_dev->func == tmp_dev->func) {
577 p_dev->function_config = tmp_dev->function_config;
578 kref_get(&p_dev->function_config->ref);
581 /* Add to the list in pcmcia_bus_socket */
582 list_add(&p_dev->socket_device_list, &s->devices_list);
584 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
586 if (!p_dev->function_config) {
587 p_dev->function_config = kzalloc(sizeof(struct config_t),
589 if (!p_dev->function_config)
591 kref_init(&p_dev->function_config->ref);
594 printk(KERN_NOTICE "pcmcia: registering new device %s\n",
597 pcmcia_device_query(p_dev);
599 if (device_register(&p_dev->dev))
602 mutex_unlock(&device_add_lock);
607 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
608 list_del(&p_dev->socket_device_list);
609 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
612 kfree(p_dev->devname);
616 mutex_unlock(&device_add_lock);
617 pcmcia_put_socket(s);
623 static int pcmcia_card_add(struct pcmcia_socket *s)
626 cistpl_longlink_mfc_t mfc;
627 unsigned int no_funcs, i;
630 if (!(s->resource_setup_done))
631 return -EAGAIN; /* try again, but later... */
633 if (pcmcia_validate_mem(s))
634 return -EAGAIN; /* try again, but later... */
636 ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
637 if (ret || !cisinfo.Chains) {
638 ds_dbg(0, "invalid CIS or invalid resources\n");
642 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
646 s->functions = no_funcs;
648 for (i=0; i < no_funcs; i++)
649 pcmcia_device_add(s, i);
655 static void pcmcia_delayed_add_device(void *data)
657 struct pcmcia_socket *s = data;
658 pcmcia_device_add(s, s->pcmcia_state.mfc_pfc);
659 s->pcmcia_state.device_add_pending = 0;
660 s->pcmcia_state.mfc_pfc = 0;
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 pcmcia_device_query(p_dev);
672 static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis)
678 /* must be called with skt_mutex held */
679 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
680 if (list_empty(&skt->devices_list))
682 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
684 /* If this is because of a CIS override, start over */
685 if (new_cis && !no_devices)
686 pcmcia_card_remove(skt, NULL);
688 /* if no devices were added for this socket yet because of
689 * missing resource information or other trouble, we need to
691 if (no_devices || new_cis) {
692 ret = pcmcia_card_add(skt);
697 /* some device information might have changed because of a CIS
698 * update or because we can finally read it correctly... so
699 * determine it again, overwriting old values if necessary. */
700 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
702 /* we re-scan all devices, not just the ones connected to this
703 * socket. This does not matter, though. */
704 ret = bus_rescan_devices(&pcmcia_bus_type);
706 printk(KERN_INFO "pcmcia: bus_rescan_devices failed\n");
709 #ifdef CONFIG_PCMCIA_LOAD_CIS
712 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
713 * @dev - the pcmcia device which needs a CIS override
714 * @filename - requested filename in /lib/firmware/
716 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
717 * the one provided by the card is broken. The firmware files reside in
718 * /lib/firmware/ in userspace.
720 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
722 struct pcmcia_socket *s = dev->socket;
723 const struct firmware *fw;
729 cistpl_longlink_mfc_t mfc;
734 ds_dbg(1, "trying to load firmware %s\n", filename);
736 if (strlen(filename) > 14)
739 snprintf(path, 20, "%s", filename);
741 if (request_firmware(&fw, path, &dev->dev) == 0) {
742 if (fw->size >= CISTPL_MAX_CIS_SIZE)
745 cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL);
749 cis->Length = fw->size + 1;
750 memcpy(cis->Data, fw->data, fw->size);
752 if (!pcmcia_replace_cis(s, cis))
755 /* update information */
756 pcmcia_device_query(dev);
758 /* does this cis override add or remove functions? */
759 old_funcs = s->functions;
761 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
765 s->functions = no_funcs;
767 if (old_funcs > no_funcs)
768 pcmcia_card_remove(s, dev);
769 else if (no_funcs > old_funcs)
770 pcmcia_add_device_later(s, 1);
773 release_firmware(fw);
778 #else /* !CONFIG_PCMCIA_LOAD_CIS */
780 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
788 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
789 struct pcmcia_device_id *did)
791 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
792 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
796 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
797 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
801 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
802 if (dev->func != did->function)
806 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
807 if (!dev->prod_id[0])
809 if (strcmp(did->prod_id[0], dev->prod_id[0]))
813 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
814 if (!dev->prod_id[1])
816 if (strcmp(did->prod_id[1], dev->prod_id[1]))
820 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
821 if (!dev->prod_id[2])
823 if (strcmp(did->prod_id[2], dev->prod_id[2]))
827 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
828 if (!dev->prod_id[3])
830 if (strcmp(did->prod_id[3], dev->prod_id[3]))
834 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
835 if (dev->device_no != did->device_no)
839 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
840 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
843 /* if this is a pseudo-multi-function device,
844 * we need explicit matches */
845 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
850 /* also, FUNC_ID matching needs to be activated by userspace
851 * after it has re-checked that there is no possible module
852 * with a prod_id/manf_id/card_id match.
854 if (!dev->allow_func_id_match)
858 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
859 if (!dev->socket->fake_cis)
860 pcmcia_load_firmware(dev, did->cisfile);
862 if (!dev->socket->fake_cis)
866 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
871 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
875 dev->dev.driver_data = (void *) did;
881 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
882 struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
883 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
884 struct pcmcia_device_id *did = p_drv->id_table;
886 #ifdef CONFIG_PCMCIA_IOCTL
887 /* matching by cardmgr */
888 if (p_dev->cardmgr == p_drv)
892 while (did && did->match_flags) {
893 if (pcmcia_devmatch(p_dev, did))
901 #ifdef CONFIG_HOTPLUG
903 static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
904 char *buffer, int buffer_size)
906 struct pcmcia_device *p_dev;
908 u32 hash[4] = { 0, 0, 0, 0};
913 p_dev = to_pcmcia_dev(dev);
915 /* calculate hashes */
916 for (i=0; i<4; i++) {
917 if (!p_dev->prod_id[i])
919 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
924 if (add_uevent_var(envp, num_envp, &i,
925 buffer, buffer_size, &length,
927 p_dev->socket->sock))
930 if (add_uevent_var(envp, num_envp, &i,
931 buffer, buffer_size, &length,
936 if (add_uevent_var(envp, num_envp, &i,
937 buffer, buffer_size, &length,
938 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
939 "pa%08Xpb%08Xpc%08Xpd%08X",
940 p_dev->has_manf_id ? p_dev->manf_id : 0,
941 p_dev->has_card_id ? p_dev->card_id : 0,
942 p_dev->has_func_id ? p_dev->func_id : 0,
958 static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
959 char *buffer, int buffer_size)
966 /************************ per-device sysfs output ***************************/
968 #define pcmcia_device_attr(field, test, format) \
969 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
971 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
972 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
975 #define pcmcia_device_stringattr(name, field) \
976 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
978 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
979 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
982 pcmcia_device_attr(func, socket, "0x%02x\n");
983 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
984 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
985 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
986 pcmcia_device_stringattr(prod_id1, prod_id[0]);
987 pcmcia_device_stringattr(prod_id2, prod_id[1]);
988 pcmcia_device_stringattr(prod_id3, prod_id[2]);
989 pcmcia_device_stringattr(prod_id4, prod_id[3]);
992 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf)
994 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
996 if (p_dev->suspended)
997 return sprintf(buf, "off\n");
999 return sprintf(buf, "on\n");
1002 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr,
1003 const char *buf, size_t count)
1005 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1011 if ((!p_dev->suspended) && !strncmp(buf, "off", 3))
1012 ret = dpm_runtime_suspend(dev, PMSG_SUSPEND);
1013 else if (p_dev->suspended && !strncmp(buf, "on", 2))
1014 dpm_runtime_resume(dev);
1016 return ret ? ret : count;
1020 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1022 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1024 u32 hash[4] = { 0, 0, 0, 0};
1026 /* calculate hashes */
1027 for (i=0; i<4; i++) {
1028 if (!p_dev->prod_id[i])
1030 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i]));
1032 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1033 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1034 p_dev->has_manf_id ? p_dev->manf_id : 0,
1035 p_dev->has_card_id ? p_dev->card_id : 0,
1036 p_dev->has_func_id ? p_dev->func_id : 0,
1037 p_dev->func, p_dev->device_no,
1038 hash[0], hash[1], hash[2], hash[3]);
1041 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
1042 struct device_attribute *attr, const char *buf, size_t count)
1044 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1050 mutex_lock(&p_dev->socket->skt_mutex);
1051 p_dev->allow_func_id_match = 1;
1052 mutex_unlock(&p_dev->socket->skt_mutex);
1054 ret = bus_rescan_devices(&pcmcia_bus_type);
1056 printk(KERN_INFO "pcmcia: bus_rescan_devices failed after "
1057 "allowing func_id matches\n");
1062 static struct device_attribute pcmcia_dev_attrs[] = {
1063 __ATTR(function, 0444, func_show, NULL),
1064 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state),
1068 __ATTR_RO(prod_id1),
1069 __ATTR_RO(prod_id2),
1070 __ATTR_RO(prod_id3),
1071 __ATTR_RO(prod_id4),
1072 __ATTR_RO(modalias),
1073 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
1077 /* PM support, also needed for reset */
1079 static int pcmcia_dev_suspend(struct device * dev, pm_message_t state)
1081 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1082 struct pcmcia_driver *p_drv = NULL;
1086 p_drv = to_pcmcia_drv(dev->driver);
1091 if (p_drv->suspend) {
1092 ret = p_drv->suspend(p_dev);
1097 if (p_dev->device_no == p_dev->func)
1098 pcmcia_release_configuration(p_dev);
1102 p_dev->suspended = 1;
1107 static int pcmcia_dev_resume(struct device * dev)
1109 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1110 struct pcmcia_driver *p_drv = NULL;
1114 p_drv = to_pcmcia_drv(dev->driver);
1119 if (p_dev->device_no == p_dev->func) {
1120 ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
1126 ret = p_drv->resume(p_dev);
1130 p_dev->suspended = 0;
1135 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
1137 struct pcmcia_socket *skt = _data;
1138 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1140 if (p_dev->socket != skt)
1143 return dpm_runtime_suspend(dev, PMSG_SUSPEND);
1146 static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
1148 struct pcmcia_socket *skt = _data;
1149 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1151 if (p_dev->socket != skt)
1154 dpm_runtime_resume(dev);
1159 static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1161 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1165 static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1167 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1168 pcmcia_bus_suspend_callback)) {
1169 pcmcia_bus_resume(skt);
1176 /*======================================================================
1178 The card status event handler.
1180 ======================================================================*/
1182 /* Normally, the event is passed to individual drivers after
1183 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
1184 * is inversed to maintain historic compatibility.
1187 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
1189 struct pcmcia_socket *s = pcmcia_get_socket(skt);
1192 printk(KERN_ERR "PCMCIA obtaining reference to socket %p " \
1193 "failed, event 0x%x lost!\n", skt, event);
1197 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
1198 event, priority, skt);
1201 case CS_EVENT_CARD_REMOVAL:
1202 s->pcmcia_state.present = 0;
1203 pcmcia_card_remove(skt, NULL);
1204 handle_event(skt, event);
1207 case CS_EVENT_CARD_INSERTION:
1208 s->pcmcia_state.present = 1;
1209 pcmcia_card_add(skt);
1210 handle_event(skt, event);
1213 case CS_EVENT_EJECTION_REQUEST:
1216 case CS_EVENT_PM_SUSPEND:
1217 case CS_EVENT_PM_RESUME:
1218 case CS_EVENT_RESET_PHYSICAL:
1219 case CS_EVENT_CARD_RESET:
1221 handle_event(skt, event);
1225 pcmcia_put_socket(s);
1231 struct pcmcia_device * pcmcia_dev_present(struct pcmcia_device *_p_dev)
1233 struct pcmcia_device *p_dev;
1234 struct pcmcia_device *ret = NULL;
1236 p_dev = pcmcia_get_dev(_p_dev);
1240 if (!p_dev->socket->pcmcia_state.present)
1243 if (p_dev->_removed)
1246 if (p_dev->suspended)
1251 pcmcia_put_dev(p_dev);
1254 EXPORT_SYMBOL(pcmcia_dev_present);
1257 static struct pcmcia_callback pcmcia_bus_callback = {
1258 .owner = THIS_MODULE,
1260 .requery = pcmcia_bus_rescan,
1261 .suspend = pcmcia_bus_suspend,
1262 .resume = pcmcia_bus_resume,
1265 static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev,
1266 struct class_interface *class_intf)
1268 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1271 socket = pcmcia_get_socket(socket);
1273 printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
1278 * Ugly. But we want to wait for the socket threads to have started up.
1279 * We really should let the drivers themselves drive some of this..
1283 #ifdef CONFIG_PCMCIA_IOCTL
1284 init_waitqueue_head(&socket->queue);
1286 INIT_LIST_HEAD(&socket->devices_list);
1287 INIT_WORK(&socket->device_add, pcmcia_delayed_add_device, socket);
1288 memset(&socket->pcmcia_state, 0, sizeof(u8));
1289 socket->device_count = 0;
1291 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1293 printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
1294 pcmcia_put_socket(socket);
1301 static void pcmcia_bus_remove_socket(struct class_device *class_dev,
1302 struct class_interface *class_intf)
1304 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1309 socket->pcmcia_state.dead = 1;
1310 pccard_register_pcmcia(socket, NULL);
1312 /* unregister any unbound devices */
1313 mutex_lock(&socket->skt_mutex);
1314 pcmcia_card_remove(socket, NULL);
1315 mutex_unlock(&socket->skt_mutex);
1317 pcmcia_put_socket(socket);
1323 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1324 static struct class_interface pcmcia_bus_interface = {
1325 .class = &pcmcia_socket_class,
1326 .add = &pcmcia_bus_add_socket,
1327 .remove = &pcmcia_bus_remove_socket,
1331 struct bus_type pcmcia_bus_type = {
1333 .uevent = pcmcia_bus_uevent,
1334 .match = pcmcia_bus_match,
1335 .dev_attrs = pcmcia_dev_attrs,
1336 .probe = pcmcia_device_probe,
1337 .remove = pcmcia_device_remove,
1338 .suspend = pcmcia_dev_suspend,
1339 .resume = pcmcia_dev_resume,
1343 static int __init init_pcmcia_bus(void)
1347 spin_lock_init(&pcmcia_dev_list_lock);
1349 ret = bus_register(&pcmcia_bus_type);
1351 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret);
1354 ret = class_interface_register(&pcmcia_bus_interface);
1357 "pcmcia: class_interface_register error: %d\n", ret);
1358 bus_unregister(&pcmcia_bus_type);
1362 pcmcia_setup_ioctl();
1366 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1367 * pcmcia_socket_class is already registered */
1370 static void __exit exit_pcmcia_bus(void)
1372 pcmcia_cleanup_ioctl();
1374 class_interface_unregister(&pcmcia_bus_interface);
1376 bus_unregister(&pcmcia_bus_type);
1378 module_exit(exit_pcmcia_bus);