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 - 2005 Dominik Brodowski
16 #include <linux/config.h>
17 #include <linux/kernel.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/errno.h>
21 #include <linux/list.h>
22 #include <linux/delay.h>
23 #include <linux/workqueue.h>
24 #include <linux/crc32.h>
25 #include <linux/firmware.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 static int unbind_request(struct pcmcia_socket *s);
62 /*====================================================================*/
64 /* code which was in cs.c before */
66 /* String tables for error messages */
68 typedef struct lookup_t {
73 static const lookup_t error_table[] = {
74 { CS_SUCCESS, "Operation succeeded" },
75 { CS_BAD_ADAPTER, "Bad adapter" },
76 { CS_BAD_ATTRIBUTE, "Bad attribute", },
77 { CS_BAD_BASE, "Bad base address" },
78 { CS_BAD_EDC, "Bad EDC" },
79 { CS_BAD_IRQ, "Bad IRQ" },
80 { CS_BAD_OFFSET, "Bad offset" },
81 { CS_BAD_PAGE, "Bad page number" },
82 { CS_READ_FAILURE, "Read failure" },
83 { CS_BAD_SIZE, "Bad size" },
84 { CS_BAD_SOCKET, "Bad socket" },
85 { CS_BAD_TYPE, "Bad type" },
86 { CS_BAD_VCC, "Bad Vcc" },
87 { CS_BAD_VPP, "Bad Vpp" },
88 { CS_BAD_WINDOW, "Bad window" },
89 { CS_WRITE_FAILURE, "Write failure" },
90 { CS_NO_CARD, "No card present" },
91 { CS_UNSUPPORTED_FUNCTION, "Usupported function" },
92 { CS_UNSUPPORTED_MODE, "Unsupported mode" },
93 { CS_BAD_SPEED, "Bad speed" },
94 { CS_BUSY, "Resource busy" },
95 { CS_GENERAL_FAILURE, "General failure" },
96 { CS_WRITE_PROTECTED, "Write protected" },
97 { CS_BAD_ARG_LENGTH, "Bad argument length" },
98 { CS_BAD_ARGS, "Bad arguments" },
99 { CS_CONFIGURATION_LOCKED, "Configuration locked" },
100 { CS_IN_USE, "Resource in use" },
101 { CS_NO_MORE_ITEMS, "No more items" },
102 { CS_OUT_OF_RESOURCE, "Out of resource" },
103 { CS_BAD_HANDLE, "Bad handle" },
104 { CS_BAD_TUPLE, "Bad CIS tuple" }
108 static const lookup_t service_table[] = {
109 { AccessConfigurationRegister, "AccessConfigurationRegister" },
110 { AddSocketServices, "AddSocketServices" },
111 { AdjustResourceInfo, "AdjustResourceInfo" },
112 { CheckEraseQueue, "CheckEraseQueue" },
113 { CloseMemory, "CloseMemory" },
114 { DeregisterClient, "DeregisterClient" },
115 { DeregisterEraseQueue, "DeregisterEraseQueue" },
116 { GetCardServicesInfo, "GetCardServicesInfo" },
117 { GetClientInfo, "GetClientInfo" },
118 { GetConfigurationInfo, "GetConfigurationInfo" },
119 { GetEventMask, "GetEventMask" },
120 { GetFirstClient, "GetFirstClient" },
121 { GetFirstRegion, "GetFirstRegion" },
122 { GetFirstTuple, "GetFirstTuple" },
123 { GetNextClient, "GetNextClient" },
124 { GetNextRegion, "GetNextRegion" },
125 { GetNextTuple, "GetNextTuple" },
126 { GetStatus, "GetStatus" },
127 { GetTupleData, "GetTupleData" },
128 { MapMemPage, "MapMemPage" },
129 { ModifyConfiguration, "ModifyConfiguration" },
130 { ModifyWindow, "ModifyWindow" },
131 { OpenMemory, "OpenMemory" },
132 { ParseTuple, "ParseTuple" },
133 { ReadMemory, "ReadMemory" },
134 { RegisterClient, "RegisterClient" },
135 { RegisterEraseQueue, "RegisterEraseQueue" },
136 { RegisterMTD, "RegisterMTD" },
137 { ReleaseConfiguration, "ReleaseConfiguration" },
138 { ReleaseIO, "ReleaseIO" },
139 { ReleaseIRQ, "ReleaseIRQ" },
140 { ReleaseWindow, "ReleaseWindow" },
141 { RequestConfiguration, "RequestConfiguration" },
142 { RequestIO, "RequestIO" },
143 { RequestIRQ, "RequestIRQ" },
144 { RequestSocketMask, "RequestSocketMask" },
145 { RequestWindow, "RequestWindow" },
146 { ResetCard, "ResetCard" },
147 { SetEventMask, "SetEventMask" },
148 { ValidateCIS, "ValidateCIS" },
149 { WriteMemory, "WriteMemory" },
150 { BindDevice, "BindDevice" },
151 { BindMTD, "BindMTD" },
152 { ReportError, "ReportError" },
153 { SuspendCard, "SuspendCard" },
154 { ResumeCard, "ResumeCard" },
155 { EjectCard, "EjectCard" },
156 { InsertCard, "InsertCard" },
157 { ReplaceCIS, "ReplaceCIS" }
161 static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err)
169 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
171 for (i = 0; i < ARRAY_SIZE(service_table); i++)
172 if (service_table[i].key == err->func)
174 if (i < ARRAY_SIZE(service_table))
175 serv = service_table[i].msg;
177 serv = "Unknown service number";
179 for (i = 0; i < ARRAY_SIZE(error_table); i++)
180 if (error_table[i].key == err->retcode)
182 if (i < ARRAY_SIZE(error_table))
183 printk("%s: %s\n", serv, error_table[i].msg);
185 printk("%s: Unknown error code %#x\n", serv, err->retcode);
190 /* end of code which was in cs.c before */
192 /*======================================================================*/
194 void cs_error(struct pcmcia_device *p_dev, int func, int ret)
196 error_info_t err = { func, ret };
197 pcmcia_report_error(p_dev, &err);
199 EXPORT_SYMBOL(cs_error);
202 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
204 struct pcmcia_device_id *did = p_drv->id_table;
208 if (!p_drv->attach || !p_drv->event || !p_drv->detach)
209 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
210 "function\n", p_drv->drv.name);
212 while (did && did->match_flags) {
213 for (i=0; i<4; i++) {
214 if (!did->prod_id[i])
217 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
218 if (hash == did->prod_id_hash[i])
221 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
222 "product string \"%s\": is 0x%x, should "
223 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
224 did->prod_id_hash[i], hash);
225 printk(KERN_DEBUG "pcmcia: see "
226 "Documentation/pcmcia/devicetable.txt for "
236 #ifdef CONFIG_PCMCIA_LOAD_CIS
239 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
240 * @dev - the pcmcia device which needs a CIS override
241 * @filename - requested filename in /lib/firmware/cis/
243 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
244 * the one provided by the card is broken. The firmware files reside in
245 * /lib/firmware/cis/ in userspace.
247 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
249 struct pcmcia_socket *s = dev->socket;
250 const struct firmware *fw;
258 ds_dbg(1, "trying to load firmware %s\n", filename);
260 if (strlen(filename) > 14)
263 snprintf(path, 20, "%s", filename);
265 if (request_firmware(&fw, path, &dev->dev) == 0) {
266 if (fw->size >= CISTPL_MAX_CIS_SIZE)
269 cis = kmalloc(sizeof(cisdump_t), GFP_KERNEL);
273 memset(cis, 0, sizeof(cisdump_t));
275 cis->Length = fw->size + 1;
276 memcpy(cis->Data, fw->data, fw->size);
278 if (!pcmcia_replace_cis(s, cis))
282 release_firmware(fw);
287 #else /* !CONFIG_PCMCIA_LOAD_CIS */
289 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
297 /*======================================================================*/
301 * pcmcia_register_driver - register a PCMCIA driver with the bus core
303 * Registers a PCMCIA driver with the PCMCIA bus core.
305 static int pcmcia_device_probe(struct device *dev);
306 static int pcmcia_device_remove(struct device * dev);
308 int pcmcia_register_driver(struct pcmcia_driver *driver)
313 pcmcia_check_driver(driver);
315 /* initialize common fields */
316 driver->drv.bus = &pcmcia_bus_type;
317 driver->drv.owner = driver->owner;
318 driver->drv.probe = pcmcia_device_probe;
319 driver->drv.remove = pcmcia_device_remove;
321 return driver_register(&driver->drv);
323 EXPORT_SYMBOL(pcmcia_register_driver);
326 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
328 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
330 driver_unregister(&driver->drv);
332 EXPORT_SYMBOL(pcmcia_unregister_driver);
335 /* pcmcia_device handling */
337 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
339 struct device *tmp_dev;
340 tmp_dev = get_device(&p_dev->dev);
343 return to_pcmcia_dev(tmp_dev);
346 void pcmcia_put_dev(struct pcmcia_device *p_dev)
349 put_device(&p_dev->dev);
352 static void pcmcia_release_dev(struct device *dev)
354 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
355 ds_dbg(1, "releasing dev %p\n", p_dev);
356 pcmcia_put_socket(p_dev->socket);
361 static int pcmcia_device_probe(struct device * dev)
363 struct pcmcia_device *p_dev;
364 struct pcmcia_driver *p_drv;
367 dev = get_device(dev);
371 p_dev = to_pcmcia_dev(dev);
372 p_drv = to_pcmcia_drv(dev->driver);
374 if (!try_module_get(p_drv->owner)) {
380 p_dev->instance = p_drv->attach();
381 if ((!p_dev->instance) || (p_dev->state & CLIENT_UNBOUND)) {
382 printk(KERN_NOTICE "ds: unable to create instance "
383 "of '%s'!\n", p_drv->drv.name);
389 module_put(p_drv->owner);
391 if ((ret) || !(p_drv->attach))
397 static int pcmcia_device_remove(struct device * dev)
399 struct pcmcia_device *p_dev;
400 struct pcmcia_driver *p_drv;
402 /* detach the "instance" */
403 p_dev = to_pcmcia_dev(dev);
404 p_drv = to_pcmcia_drv(dev->driver);
407 if ((p_drv->detach) && (p_dev->instance)) {
408 p_drv->detach(p_dev->instance);
409 /* from pcmcia_probe_device */
410 put_device(&p_dev->dev);
412 module_put(p_drv->owner);
421 * pcmcia_device_query -- determine information about a pcmcia device
423 static int pcmcia_device_query(struct pcmcia_device *p_dev)
425 cistpl_manfid_t manf_id;
426 cistpl_funcid_t func_id;
427 cistpl_vers_1_t *vers1;
430 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
434 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
435 CISTPL_MANFID, &manf_id)) {
436 p_dev->manf_id = manf_id.manf;
437 p_dev->card_id = manf_id.card;
438 p_dev->has_manf_id = 1;
439 p_dev->has_card_id = 1;
442 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
443 CISTPL_FUNCID, &func_id)) {
444 p_dev->func_id = func_id.func;
445 p_dev->has_func_id = 1;
447 /* rule of thumb: cards with no FUNCID, but with
448 * common memory device geometry information, are
449 * probably memory cards (from pcmcia-cs) */
450 cistpl_device_geo_t *devgeo;
452 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
457 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
458 CISTPL_DEVICE_GEO, devgeo)) {
459 ds_dbg(0, "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, p_dev->func, CISTPL_VERS_1,
469 for (i=0; i < vers1->ns; i++) {
473 tmp = vers1->str + vers1->ofs[i];
475 length = strlen(tmp) + 1;
476 if ((length < 3) || (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 DECLARE_MUTEX(device_add_lock);
503 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
505 struct pcmcia_device *p_dev;
508 s = pcmcia_get_socket(s);
512 down(&device_add_lock);
514 /* max of 2 devices per card */
515 if (s->device_count == 2)
518 p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
521 memset(p_dev, 0, sizeof(struct pcmcia_device));
524 p_dev->device_no = (s->device_count++);
525 p_dev->func = function;
527 p_dev->dev.bus = &pcmcia_bus_type;
528 p_dev->dev.parent = s->dev.dev;
529 p_dev->dev.release = pcmcia_release_dev;
530 sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
533 p_dev->state = CLIENT_UNBOUND;
535 /* Add to the list in pcmcia_bus_socket */
536 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
537 list_add_tail(&p_dev->socket_device_list, &s->devices_list);
538 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
540 pcmcia_device_query(p_dev);
542 if (device_register(&p_dev->dev)) {
543 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
544 list_del(&p_dev->socket_device_list);
545 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
550 up(&device_add_lock);
558 up(&device_add_lock);
559 pcmcia_put_socket(s);
565 static int pcmcia_card_add(struct pcmcia_socket *s)
568 cistpl_longlink_mfc_t mfc;
569 unsigned int no_funcs, i;
572 if (!(s->resource_setup_done))
573 return -EAGAIN; /* try again, but later... */
575 pcmcia_validate_mem(s);
576 ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
577 if (ret || !cisinfo.Chains) {
578 ds_dbg(0, "invalid CIS or invalid resources\n");
582 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
587 for (i=0; i < no_funcs; i++)
588 pcmcia_device_add(s, i);
594 static void pcmcia_delayed_add_pseudo_device(void *data)
596 struct pcmcia_socket *s = data;
597 pcmcia_device_add(s, 0);
598 s->pcmcia_state.device_add_pending = 0;
601 static inline void pcmcia_add_pseudo_device(struct pcmcia_socket *s)
603 if (!s->pcmcia_state.device_add_pending) {
604 s->pcmcia_state.device_add_pending = 1;
605 schedule_work(&s->device_add);
610 static int pcmcia_requery(struct device *dev, void * _data)
612 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
613 if (!p_dev->dev.driver)
614 pcmcia_device_query(p_dev);
619 static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
624 /* must be called with skt_sem held */
625 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
626 if (list_empty(&skt->devices_list))
628 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
630 /* if no devices were added for this socket yet because of
631 * missing resource information or other trouble, we need to
634 int ret = pcmcia_card_add(skt);
639 /* some device information might have changed because of a CIS
640 * update or because we can finally read it correctly... so
641 * determine it again, overwriting old values if necessary. */
642 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
644 /* we re-scan all devices, not just the ones connected to this
645 * socket. This does not matter, though. */
646 bus_rescan_devices(&pcmcia_bus_type);
649 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
650 struct pcmcia_device_id *did)
652 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
653 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
657 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
658 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
662 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
663 if (dev->func != did->function)
667 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
668 if (!dev->prod_id[0])
670 if (strcmp(did->prod_id[0], dev->prod_id[0]))
674 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
675 if (!dev->prod_id[1])
677 if (strcmp(did->prod_id[1], dev->prod_id[1]))
681 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
682 if (!dev->prod_id[2])
684 if (strcmp(did->prod_id[2], dev->prod_id[2]))
688 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
689 if (!dev->prod_id[3])
691 if (strcmp(did->prod_id[3], dev->prod_id[3]))
695 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
696 /* handle pseudo multifunction devices:
697 * there are at most two pseudo multifunction devices.
698 * if we're matching against the first, schedule a
699 * call which will then check whether there are two
700 * pseudo devices, and if not, add the second one.
702 if (dev->device_no == 0)
703 pcmcia_add_pseudo_device(dev->socket);
705 if (dev->device_no != did->device_no)
709 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
710 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
713 /* if this is a pseudo-multi-function device,
714 * we need explicit matches */
715 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
720 /* also, FUNC_ID matching needs to be activated by userspace
721 * after it has re-checked that there is no possible module
722 * with a prod_id/manf_id/card_id match.
724 if (!dev->allow_func_id_match)
728 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
729 if (!dev->socket->fake_cis)
730 pcmcia_load_firmware(dev, did->cisfile);
732 if (!dev->socket->fake_cis)
736 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
741 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
745 dev->dev.driver_data = (void *) did;
751 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
752 struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
753 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
754 struct pcmcia_device_id *did = p_drv->id_table;
756 /* matching by cardmgr */
757 if (p_dev->cardmgr == p_drv)
760 while (did && did->match_flags) {
761 if (pcmcia_devmatch(p_dev, did))
769 #ifdef CONFIG_HOTPLUG
771 static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
772 char *buffer, int buffer_size)
774 struct pcmcia_device *p_dev;
776 u32 hash[4] = { 0, 0, 0, 0};
781 p_dev = to_pcmcia_dev(dev);
783 /* calculate hashes */
784 for (i=0; i<4; i++) {
785 if (!p_dev->prod_id[i])
787 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
792 if (add_hotplug_env_var(envp, num_envp, &i,
793 buffer, buffer_size, &length,
795 p_dev->socket->sock))
798 if (add_hotplug_env_var(envp, num_envp, &i,
799 buffer, buffer_size, &length,
804 if (add_hotplug_env_var(envp, num_envp, &i,
805 buffer, buffer_size, &length,
806 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
807 "pa%08Xpb%08Xpc%08Xpd%08X",
808 p_dev->has_manf_id ? p_dev->manf_id : 0,
809 p_dev->has_card_id ? p_dev->card_id : 0,
810 p_dev->has_func_id ? p_dev->func_id : 0,
826 static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
827 char *buffer, int buffer_size)
834 /************************ per-device sysfs output ***************************/
836 #define pcmcia_device_attr(field, test, format) \
837 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
839 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
840 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
843 #define pcmcia_device_stringattr(name, field) \
844 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
846 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
847 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
850 pcmcia_device_attr(func, socket, "0x%02x\n");
851 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
852 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
853 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
854 pcmcia_device_stringattr(prod_id1, prod_id[0]);
855 pcmcia_device_stringattr(prod_id2, prod_id[1]);
856 pcmcia_device_stringattr(prod_id3, prod_id[2]);
857 pcmcia_device_stringattr(prod_id4, prod_id[3]);
859 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
861 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
863 u32 hash[4] = { 0, 0, 0, 0};
865 /* calculate hashes */
866 for (i=0; i<4; i++) {
867 if (!p_dev->prod_id[i])
869 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i]));
871 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
872 "pa%08Xpb%08Xpc%08Xpd%08X\n",
873 p_dev->has_manf_id ? p_dev->manf_id : 0,
874 p_dev->has_card_id ? p_dev->card_id : 0,
875 p_dev->has_func_id ? p_dev->func_id : 0,
876 p_dev->func, p_dev->device_no,
877 hash[0], hash[1], hash[2], hash[3]);
880 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
881 struct device_attribute *attr, const char *buf, size_t count)
883 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
887 down(&p_dev->socket->skt_sem);
888 p_dev->allow_func_id_match = 1;
889 up(&p_dev->socket->skt_sem);
891 bus_rescan_devices(&pcmcia_bus_type);
896 static struct device_attribute pcmcia_dev_attrs[] = {
897 __ATTR(function, 0444, func_show, NULL),
906 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
911 /*======================================================================
913 The card status event handler.
915 ======================================================================*/
917 struct send_event_data {
918 struct pcmcia_socket *skt;
923 static int send_event_callback(struct device *dev, void * _data)
925 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
926 struct pcmcia_driver *p_drv;
927 struct send_event_data *data = _data;
929 /* we get called for all sockets, but may only pass the event
930 * for drivers _on the affected socket_ */
931 if (p_dev->socket != data->skt)
934 p_drv = to_pcmcia_drv(p_dev->dev.driver);
938 if (p_dev->state & (CLIENT_UNBOUND|CLIENT_STALE))
942 return p_drv->event(data->event, data->priority,
943 &p_dev->event_callback_args);
948 static int send_event(struct pcmcia_socket *s, event_t event, int priority)
950 struct send_event_data private;
953 private.event = event;
954 private.priority = priority;
956 return bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback);
960 /* Normally, the event is passed to individual drivers after
961 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
962 * is inversed to maintain historic compatibility.
965 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
967 struct pcmcia_socket *s = pcmcia_get_socket(skt);
970 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
971 event, priority, skt);
975 case CS_EVENT_CARD_REMOVAL:
976 s->pcmcia_state.present = 0;
977 send_event(skt, event, priority);
979 handle_event(skt, event);
982 case CS_EVENT_CARD_INSERTION:
983 s->pcmcia_state.present = 1;
984 pcmcia_card_add(skt);
985 handle_event(skt, event);
988 case CS_EVENT_EJECTION_REQUEST:
989 ret = send_event(skt, event, priority);
993 handle_event(skt, event);
994 send_event(skt, event, priority);
998 pcmcia_put_socket(s);
1005 int pcmcia_register_client(struct pcmcia_device **handle, client_reg_t *req)
1007 struct pcmcia_socket *s = NULL;
1008 struct pcmcia_device *p_dev = NULL;
1009 struct pcmcia_driver *p_drv = NULL;
1011 /* Look for unbound client with matching dev_info */
1012 down_read(&pcmcia_socket_list_rwsem);
1013 list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
1014 unsigned long flags;
1016 if (s->state & SOCKET_CARDBUS)
1019 s = pcmcia_get_socket(s);
1022 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1023 list_for_each_entry(p_dev, &s->devices_list, socket_device_list) {
1024 p_dev = pcmcia_get_dev(p_dev);
1027 if (!(p_dev->state & CLIENT_UNBOUND) ||
1028 (!p_dev->dev.driver)) {
1029 pcmcia_put_dev(p_dev);
1032 p_drv = to_pcmcia_drv(p_dev->dev.driver);
1033 if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) {
1034 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1037 pcmcia_put_dev(p_dev);
1039 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1040 pcmcia_put_socket(s);
1043 up_read(&pcmcia_socket_list_rwsem);
1047 pcmcia_put_socket(s); /* safe, as we already hold a reference from bind_device */
1050 p_dev->state &= ~CLIENT_UNBOUND;
1051 p_dev->event_callback_args = req->event_callback_args;
1052 p_dev->event_callback_args.client_handle = p_dev;
1055 if (!s->functions) {
1056 cistpl_longlink_mfc_t mfc;
1057 if (pccard_read_tuple(s, p_dev->func, CISTPL_LONGLINK_MFC, &mfc)
1059 s->functions = mfc.nfn;
1062 s->config = kmalloc(sizeof(config_t) * s->functions,
1065 goto out_no_resource;
1066 memset(s->config, 0, sizeof(config_t) * s->functions);
1069 ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
1070 p_dev, p_dev->dev.bus_id);
1072 if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
1074 p_drv->event(CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW,
1075 &p_dev->event_callback_args);
1082 pcmcia_put_dev(p_dev);
1083 return CS_OUT_OF_RESOURCE;
1084 } /* register_client */
1085 EXPORT_SYMBOL(pcmcia_register_client);
1088 /* unbind _all_ devices attached to a given pcmcia_bus_socket. The
1089 * drivers have been called with EVENT_CARD_REMOVAL before.
1091 static int unbind_request(struct pcmcia_socket *s)
1093 struct pcmcia_device *p_dev;
1094 unsigned long flags;
1096 ds_dbg(2, "unbind_request(%d)\n", s->sock);
1098 s->device_count = 0;
1101 /* unregister all pcmcia_devices registered with this socket*/
1102 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1103 if (list_empty(&s->devices_list)) {
1104 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1107 p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list);
1108 list_del(&p_dev->socket_device_list);
1109 p_dev->state |= CLIENT_STALE;
1110 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1112 device_unregister(&p_dev->dev);
1116 } /* unbind_request */
1118 int pcmcia_deregister_client(struct pcmcia_device *p_dev)
1120 struct pcmcia_socket *s;
1124 ds_dbg(1, "deregister_client(%p)\n", p_dev);
1126 if (p_dev->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
1128 for (i = 0; i < MAX_WIN; i++)
1129 if (p_dev->state & CLIENT_WIN_REQ(i))
1132 if (p_dev->state & CLIENT_STALE) {
1133 p_dev->state &= ~CLIENT_STALE;
1134 pcmcia_put_dev(p_dev);
1136 p_dev->state = CLIENT_UNBOUND;
1141 printk(KERN_WARNING "ds: deregister_client was called too early.\n");
1143 } /* deregister_client */
1144 EXPORT_SYMBOL(pcmcia_deregister_client);
1146 static struct pcmcia_callback pcmcia_bus_callback = {
1147 .owner = THIS_MODULE,
1149 .requery = pcmcia_bus_rescan,
1152 static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev)
1154 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1157 socket = pcmcia_get_socket(socket);
1159 printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
1164 * Ugly. But we want to wait for the socket threads to have started up.
1165 * We really should let the drivers themselves drive some of this..
1169 #ifdef CONFIG_PCMCIA_IOCTL
1170 init_waitqueue_head(&socket->queue);
1172 INIT_LIST_HEAD(&socket->devices_list);
1173 INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket);
1174 memset(&socket->pcmcia_state, 0, sizeof(u8));
1175 socket->device_count = 0;
1177 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1179 printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
1180 pcmcia_put_socket(socket);
1187 static void pcmcia_bus_remove_socket(struct class_device *class_dev)
1189 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1194 socket->pcmcia_state.dead = 1;
1195 pccard_register_pcmcia(socket, NULL);
1197 pcmcia_put_socket(socket);
1203 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1204 static struct class_interface pcmcia_bus_interface = {
1205 .class = &pcmcia_socket_class,
1206 .add = &pcmcia_bus_add_socket,
1207 .remove = &pcmcia_bus_remove_socket,
1211 struct bus_type pcmcia_bus_type = {
1213 .hotplug = pcmcia_bus_hotplug,
1214 .match = pcmcia_bus_match,
1215 .dev_attrs = pcmcia_dev_attrs,
1219 static int __init init_pcmcia_bus(void)
1221 spin_lock_init(&pcmcia_dev_list_lock);
1223 bus_register(&pcmcia_bus_type);
1224 class_interface_register(&pcmcia_bus_interface);
1226 pcmcia_setup_ioctl();
1230 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1231 * pcmcia_socket_class is already registered */
1234 static void __exit exit_pcmcia_bus(void)
1236 pcmcia_cleanup_ioctl();
1238 class_interface_unregister(&pcmcia_bus_interface);
1240 bus_unregister(&pcmcia_bus_type);
1242 module_exit(exit_pcmcia_bus);