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(client_handle_t handle, error_info_t *err)
169 struct pcmcia_device *p_dev = handle_to_pdev(handle);
170 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
173 for (i = 0; i < ARRAY_SIZE(service_table); i++)
174 if (service_table[i].key == err->func)
176 if (i < ARRAY_SIZE(service_table))
177 serv = service_table[i].msg;
179 serv = "Unknown service number";
181 for (i = 0; i < ARRAY_SIZE(error_table); i++)
182 if (error_table[i].key == err->retcode)
184 if (i < ARRAY_SIZE(error_table))
185 printk("%s: %s\n", serv, error_table[i].msg);
187 printk("%s: Unknown error code %#x\n", serv, err->retcode);
192 /* end of code which was in cs.c before */
194 /*======================================================================*/
196 void cs_error(client_handle_t handle, int func, int ret)
198 error_info_t err = { func, ret };
199 pcmcia_report_error(handle, &err);
201 EXPORT_SYMBOL(cs_error);
204 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
206 struct pcmcia_device_id *did = p_drv->id_table;
210 if (!p_drv->attach || !p_drv->event || !p_drv->detach)
211 printk(KERN_DEBUG "pcmcia: %s does misses a callback function",
214 while (did && did->match_flags) {
215 for (i=0; i<4; i++) {
216 if (!did->prod_id[i])
219 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
220 if (hash == did->prod_id_hash[i])
223 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
224 "product string \"%s\": is 0x%x, should "
225 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
226 did->prod_id_hash[i], hash);
227 printk(KERN_DEBUG "pcmcia: see "
228 "Documentation/pcmcia/devicetable.txt for "
238 #ifdef CONFIG_PCMCIA_LOAD_CIS
241 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
242 * @dev - the pcmcia device which needs a CIS override
243 * @filename - requested filename in /lib/firmware/cis/
245 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
246 * the one provided by the card is broken. The firmware files reside in
247 * /lib/firmware/cis/ in userspace.
249 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
251 struct pcmcia_socket *s = dev->socket;
252 const struct firmware *fw;
260 ds_dbg(1, "trying to load firmware %s\n", filename);
262 if (strlen(filename) > 14)
265 snprintf(path, 20, "%s", filename);
267 if (request_firmware(&fw, path, &dev->dev) == 0) {
268 if (fw->size >= CISTPL_MAX_CIS_SIZE)
271 cis = kmalloc(sizeof(cisdump_t), GFP_KERNEL);
275 memset(cis, 0, sizeof(cisdump_t));
277 cis->Length = fw->size + 1;
278 memcpy(cis->Data, fw->data, fw->size);
280 if (!pcmcia_replace_cis(s, cis))
284 release_firmware(fw);
289 #else /* !CONFIG_PCMCIA_LOAD_CIS */
291 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
299 /*======================================================================*/
303 * pcmcia_register_driver - register a PCMCIA driver with the bus core
305 * Registers a PCMCIA driver with the PCMCIA bus core.
307 static int pcmcia_device_probe(struct device *dev);
308 static int pcmcia_device_remove(struct device * dev);
310 int pcmcia_register_driver(struct pcmcia_driver *driver)
315 pcmcia_check_driver(driver);
317 /* initialize common fields */
318 driver->drv.bus = &pcmcia_bus_type;
319 driver->drv.owner = driver->owner;
320 driver->drv.probe = pcmcia_device_probe;
321 driver->drv.remove = pcmcia_device_remove;
323 return driver_register(&driver->drv);
325 EXPORT_SYMBOL(pcmcia_register_driver);
328 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
330 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
332 driver_unregister(&driver->drv);
334 EXPORT_SYMBOL(pcmcia_unregister_driver);
337 /* pcmcia_device handling */
339 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
341 struct device *tmp_dev;
342 tmp_dev = get_device(&p_dev->dev);
345 return to_pcmcia_dev(tmp_dev);
348 void pcmcia_put_dev(struct pcmcia_device *p_dev)
351 put_device(&p_dev->dev);
354 static void pcmcia_release_dev(struct device *dev)
356 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
357 ds_dbg(1, "releasing dev %p\n", p_dev);
358 pcmcia_put_socket(p_dev->socket);
363 static int pcmcia_device_probe(struct device * dev)
365 struct pcmcia_device *p_dev;
366 struct pcmcia_driver *p_drv;
369 dev = get_device(dev);
373 p_dev = to_pcmcia_dev(dev);
374 p_drv = to_pcmcia_drv(dev->driver);
376 if (!try_module_get(p_drv->owner)) {
382 p_dev->instance = p_drv->attach();
383 if ((!p_dev->instance) || (p_dev->state & CLIENT_UNBOUND)) {
384 printk(KERN_NOTICE "ds: unable to create instance "
385 "of '%s'!\n", p_drv->drv.name);
391 module_put(p_drv->owner);
393 if ((ret) || !(p_drv->attach))
399 static int pcmcia_device_remove(struct device * dev)
401 struct pcmcia_device *p_dev;
402 struct pcmcia_driver *p_drv;
404 /* detach the "instance" */
405 p_dev = to_pcmcia_dev(dev);
406 p_drv = to_pcmcia_drv(dev->driver);
409 if ((p_drv->detach) && (p_dev->instance)) {
410 p_drv->detach(p_dev->instance);
411 /* from pcmcia_probe_device */
412 put_device(&p_dev->dev);
414 module_put(p_drv->owner);
423 * pcmcia_device_query -- determine information about a pcmcia device
425 static int pcmcia_device_query(struct pcmcia_device *p_dev)
427 cistpl_manfid_t manf_id;
428 cistpl_funcid_t func_id;
429 cistpl_vers_1_t vers1;
432 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
433 CISTPL_MANFID, &manf_id)) {
434 p_dev->manf_id = manf_id.manf;
435 p_dev->card_id = manf_id.card;
436 p_dev->has_manf_id = 1;
437 p_dev->has_card_id = 1;
440 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
441 CISTPL_FUNCID, &func_id)) {
442 p_dev->func_id = func_id.func;
443 p_dev->has_func_id = 1;
445 /* rule of thumb: cards with no FUNCID, but with
446 * common memory device geometry information, are
447 * probably memory cards (from pcmcia-cs) */
448 cistpl_device_geo_t devgeo;
449 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
450 CISTPL_DEVICE_GEO, &devgeo)) {
451 ds_dbg(0, "mem device geometry probably means "
453 p_dev->func_id = CISTPL_FUNCID_MEMORY;
454 p_dev->has_func_id = 1;
458 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
460 for (i=0; i < vers1.ns; i++) {
464 tmp = vers1.str + vers1.ofs[i];
466 length = strlen(tmp) + 1;
467 if ((length < 3) || (length > 255))
470 p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
472 if (!p_dev->prod_id[i])
475 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
484 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
485 * Serializes pcmcia_device_add; will most likely be removed in future.
487 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
488 * won't work, this doesn't matter much at the moment: the driver core doesn't
491 static DECLARE_MUTEX(device_add_lock);
493 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
495 struct pcmcia_device *p_dev;
498 s = pcmcia_get_socket(s);
502 down(&device_add_lock);
504 /* max of 2 devices per card */
505 if (s->device_count == 2)
508 p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
511 memset(p_dev, 0, sizeof(struct pcmcia_device));
514 p_dev->device_no = (s->device_count++);
515 p_dev->func = function;
517 p_dev->dev.bus = &pcmcia_bus_type;
518 p_dev->dev.parent = s->dev.dev;
519 p_dev->dev.release = pcmcia_release_dev;
520 sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
523 p_dev->state = CLIENT_UNBOUND;
525 /* Add to the list in pcmcia_bus_socket */
526 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
527 list_add_tail(&p_dev->socket_device_list, &s->devices_list);
528 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
530 pcmcia_device_query(p_dev);
532 if (device_register(&p_dev->dev)) {
533 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
534 list_del(&p_dev->socket_device_list);
535 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
540 up(&device_add_lock);
548 up(&device_add_lock);
549 pcmcia_put_socket(s);
555 static int pcmcia_card_add(struct pcmcia_socket *s)
558 cistpl_longlink_mfc_t mfc;
559 unsigned int no_funcs, i;
562 if (!(s->resource_setup_done))
563 return -EAGAIN; /* try again, but later... */
565 pcmcia_validate_mem(s);
566 ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
567 if (ret || !cisinfo.Chains) {
568 ds_dbg(0, "invalid CIS or invalid resources\n");
572 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
577 /* this doesn't handle multifunction devices on one pcmcia function
579 for (i=0; i < no_funcs; i++)
580 pcmcia_device_add(s, i);
586 static void pcmcia_delayed_add_pseudo_device(void *data)
588 struct pcmcia_socket *s = data;
589 pcmcia_device_add(s, 0);
590 s->pcmcia_state.device_add_pending = 0;
593 static inline void pcmcia_add_pseudo_device(struct pcmcia_socket *s)
595 if (!s->pcmcia_state.device_add_pending) {
596 schedule_work(&s->device_add);
597 s->pcmcia_state.device_add_pending = 1;
602 static int pcmcia_requery(struct device *dev, void * _data)
604 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
605 if (!p_dev->dev.driver)
606 pcmcia_device_query(p_dev);
611 static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
616 /* must be called with skt_sem held */
617 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
618 if (list_empty(&skt->devices_list))
620 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
622 /* if no devices were added for this socket yet because of
623 * missing resource information or other trouble, we need to
626 int ret = pcmcia_card_add(skt);
631 /* some device information might have changed because of a CIS
632 * update or because we can finally read it correctly... so
633 * determine it again, overwriting old values if necessary. */
634 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
636 /* we re-scan all devices, not just the ones connected to this
637 * socket. This does not matter, though. */
638 bus_rescan_devices(&pcmcia_bus_type);
641 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
642 struct pcmcia_device_id *did)
644 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
645 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
649 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
650 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
654 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
655 if (dev->func != did->function)
659 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
660 if (!dev->prod_id[0])
662 if (strcmp(did->prod_id[0], dev->prod_id[0]))
666 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
667 if (!dev->prod_id[1])
669 if (strcmp(did->prod_id[1], dev->prod_id[1]))
673 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
674 if (!dev->prod_id[2])
676 if (strcmp(did->prod_id[2], dev->prod_id[2]))
680 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
681 if (!dev->prod_id[3])
683 if (strcmp(did->prod_id[3], dev->prod_id[3]))
687 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
688 /* handle pseudo multifunction devices:
689 * there are at most two pseudo multifunction devices.
690 * if we're matching against the first, schedule a
691 * call which will then check whether there are two
692 * pseudo devices, and if not, add the second one.
694 if (dev->device_no == 0)
695 pcmcia_add_pseudo_device(dev->socket);
697 if (dev->device_no != did->device_no)
701 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
702 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
705 /* if this is a pseudo-multi-function device,
706 * we need explicit matches */
707 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
712 /* also, FUNC_ID matching needs to be activated by userspace
713 * after it has re-checked that there is no possible module
714 * with a prod_id/manf_id/card_id match.
716 if (!dev->allow_func_id_match)
720 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
721 if (!dev->socket->fake_cis)
722 pcmcia_load_firmware(dev, did->cisfile);
724 if (!dev->socket->fake_cis)
728 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
733 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
737 dev->dev.driver_data = (void *) did;
743 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
744 struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
745 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
746 struct pcmcia_device_id *did = p_drv->id_table;
748 /* matching by cardmgr */
749 if (p_dev->cardmgr == p_drv)
752 while (did && did->match_flags) {
753 if (pcmcia_devmatch(p_dev, did))
761 #ifdef CONFIG_HOTPLUG
763 static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
764 char *buffer, int buffer_size)
766 struct pcmcia_device *p_dev;
768 u32 hash[4] = { 0, 0, 0, 0};
773 p_dev = to_pcmcia_dev(dev);
775 /* calculate hashes */
776 for (i=0; i<4; i++) {
777 if (!p_dev->prod_id[i])
779 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
784 if (add_hotplug_env_var(envp, num_envp, &i,
785 buffer, buffer_size, &length,
787 p_dev->socket->sock))
790 if (add_hotplug_env_var(envp, num_envp, &i,
791 buffer, buffer_size, &length,
796 if (add_hotplug_env_var(envp, num_envp, &i,
797 buffer, buffer_size, &length,
798 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
799 "pa%08Xpb%08Xpc%08Xpd%08X",
800 p_dev->has_manf_id ? p_dev->manf_id : 0,
801 p_dev->has_card_id ? p_dev->card_id : 0,
802 p_dev->has_func_id ? p_dev->func_id : 0,
818 static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp,
819 char *buffer, int buffer_size)
826 /************************ per-device sysfs output ***************************/
828 #define pcmcia_device_attr(field, test, format) \
829 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
831 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
832 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
835 #define pcmcia_device_stringattr(name, field) \
836 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
838 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
839 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
842 pcmcia_device_attr(func, socket, "0x%02x\n");
843 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
844 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
845 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
846 pcmcia_device_stringattr(prod_id1, prod_id[0]);
847 pcmcia_device_stringattr(prod_id2, prod_id[1]);
848 pcmcia_device_stringattr(prod_id3, prod_id[2]);
849 pcmcia_device_stringattr(prod_id4, prod_id[3]);
851 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
853 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
855 u32 hash[4] = { 0, 0, 0, 0};
857 /* calculate hashes */
858 for (i=0; i<4; i++) {
859 if (!p_dev->prod_id[i])
861 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i]));
863 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
864 "pa%08Xpb%08Xpc%08Xpd%08X\n",
865 p_dev->has_manf_id ? p_dev->manf_id : 0,
866 p_dev->has_card_id ? p_dev->card_id : 0,
867 p_dev->has_func_id ? p_dev->func_id : 0,
868 p_dev->func, p_dev->device_no,
869 hash[0], hash[1], hash[2], hash[3]);
872 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
873 struct device_attribute *attr, const char *buf, size_t count)
875 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
879 down(&p_dev->socket->skt_sem);
880 p_dev->allow_func_id_match = 1;
881 up(&p_dev->socket->skt_sem);
883 bus_rescan_devices(&pcmcia_bus_type);
888 static struct device_attribute pcmcia_dev_attrs[] = {
889 __ATTR(function, 0444, func_show, NULL),
898 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
903 /*======================================================================
905 The card status event handler.
907 ======================================================================*/
909 struct send_event_data {
910 struct pcmcia_socket *skt;
915 static int send_event_callback(struct device *dev, void * _data)
917 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
918 struct pcmcia_driver *p_drv;
919 struct send_event_data *data = _data;
921 /* we get called for all sockets, but may only pass the event
922 * for drivers _on the affected socket_ */
923 if (p_dev->socket != data->skt)
926 p_drv = to_pcmcia_drv(p_dev->dev.driver);
930 if (p_dev->state & (CLIENT_UNBOUND|CLIENT_STALE))
934 return p_drv->event(data->event, data->priority,
935 &p_dev->event_callback_args);
940 static int send_event(struct pcmcia_socket *s, event_t event, int priority)
942 struct send_event_data private;
945 private.event = event;
946 private.priority = priority;
948 return bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback);
952 /* Normally, the event is passed to individual drivers after
953 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
954 * is inversed to maintain historic compatibility.
957 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
959 struct pcmcia_socket *s = pcmcia_get_socket(skt);
962 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
963 event, priority, skt);
967 case CS_EVENT_CARD_REMOVAL:
968 s->pcmcia_state.present = 0;
969 send_event(skt, event, priority);
971 handle_event(skt, event);
974 case CS_EVENT_CARD_INSERTION:
975 s->pcmcia_state.present = 1;
976 pcmcia_card_add(skt);
977 handle_event(skt, event);
980 case CS_EVENT_EJECTION_REQUEST:
981 ret = send_event(skt, event, priority);
985 handle_event(skt, event);
986 send_event(skt, event, priority);
990 pcmcia_put_socket(s);
997 int pcmcia_register_client(client_handle_t *handle, client_reg_t *req)
999 struct pcmcia_device *client = NULL;
1000 struct pcmcia_socket *s = NULL;
1001 struct pcmcia_device *p_dev = NULL;
1002 struct pcmcia_driver *p_drv = NULL;
1004 /* Look for unbound client with matching dev_info */
1005 down_read(&pcmcia_socket_list_rwsem);
1006 list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
1007 unsigned long flags;
1009 if (s->state & SOCKET_CARDBUS)
1012 s = pcmcia_get_socket(s);
1015 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1016 list_for_each_entry(p_dev, &s->devices_list, socket_device_list) {
1017 p_dev = pcmcia_get_dev(p_dev);
1020 if (!(p_dev->state & CLIENT_UNBOUND) ||
1021 (!p_dev->dev.driver)) {
1022 pcmcia_put_dev(p_dev);
1025 p_drv = to_pcmcia_drv(p_dev->dev.driver);
1026 if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) {
1028 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1031 pcmcia_put_dev(p_dev);
1033 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1034 pcmcia_put_socket(s);
1037 up_read(&pcmcia_socket_list_rwsem);
1038 if (!p_dev || !client)
1041 pcmcia_put_socket(s); /* safe, as we already hold a reference from bind_device */
1044 p_dev->state &= ~CLIENT_UNBOUND;
1045 p_dev->event_callback_args = req->event_callback_args;
1046 p_dev->event_callback_args.client_handle = p_dev;
1049 if (s->state & SOCKET_CARDBUS)
1050 client->state |= CLIENT_CARDBUS;
1052 if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0)) {
1053 cistpl_longlink_mfc_t mfc;
1054 if (pccard_read_tuple(s, client->func, CISTPL_LONGLINK_MFC, &mfc)
1056 s->functions = mfc.nfn;
1059 s->config = kmalloc(sizeof(config_t) * s->functions,
1062 goto out_no_resource;
1063 memset(s->config, 0, sizeof(config_t) * s->functions);
1066 ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
1067 client, p_dev->dev.bus_id);
1069 if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
1071 p_drv->event(CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW,
1072 &p_dev->event_callback_args);
1079 pcmcia_put_dev(p_dev);
1080 return CS_OUT_OF_RESOURCE;
1081 } /* register_client */
1082 EXPORT_SYMBOL(pcmcia_register_client);
1085 /* unbind _all_ devices attached to a given pcmcia_bus_socket. The
1086 * drivers have been called with EVENT_CARD_REMOVAL before.
1088 static int unbind_request(struct pcmcia_socket *s)
1090 struct pcmcia_device *p_dev;
1091 unsigned long flags;
1093 ds_dbg(2, "unbind_request(%d)\n", s->sock);
1095 s->device_count = 0;
1098 /* unregister all pcmcia_devices registered with this socket*/
1099 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1100 if (list_empty(&s->devices_list)) {
1101 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1104 p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list);
1105 list_del(&p_dev->socket_device_list);
1106 p_dev->state |= CLIENT_STALE;
1107 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1109 device_unregister(&p_dev->dev);
1113 } /* unbind_request */
1115 int pcmcia_deregister_client(client_handle_t handle)
1117 struct pcmcia_socket *s;
1119 struct pcmcia_device *p_dev = handle_to_pdev(handle);
1122 ds_dbg(1, "deregister_client(%p)\n", handle);
1124 if (handle->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
1126 for (i = 0; i < MAX_WIN; i++)
1127 if (handle->state & CLIENT_WIN_REQ(i))
1130 if (handle->state & CLIENT_STALE) {
1131 handle->state &= ~CLIENT_STALE;
1132 pcmcia_put_dev(p_dev);
1134 handle->state = CLIENT_UNBOUND;
1139 printk(KERN_WARNING "ds: deregister_client was called too early.\n");
1141 } /* deregister_client */
1142 EXPORT_SYMBOL(pcmcia_deregister_client);
1144 static struct pcmcia_callback pcmcia_bus_callback = {
1145 .owner = THIS_MODULE,
1147 .requery = pcmcia_bus_rescan,
1150 static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev)
1152 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1155 socket = pcmcia_get_socket(socket);
1157 printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
1162 * Ugly. But we want to wait for the socket threads to have started up.
1163 * We really should let the drivers themselves drive some of this..
1167 #ifdef CONFIG_PCMCIA_IOCTL
1168 init_waitqueue_head(&socket->queue);
1170 INIT_LIST_HEAD(&socket->devices_list);
1171 INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket);
1172 memset(&socket->pcmcia_state, 0, sizeof(u8));
1173 socket->device_count = 0;
1175 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1177 printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
1178 pcmcia_put_socket(socket);
1185 static void pcmcia_bus_remove_socket(struct class_device *class_dev)
1187 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1192 socket->pcmcia_state.dead = 1;
1193 pccard_register_pcmcia(socket, NULL);
1195 pcmcia_put_socket(socket);
1201 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1202 static struct class_interface pcmcia_bus_interface = {
1203 .class = &pcmcia_socket_class,
1204 .add = &pcmcia_bus_add_socket,
1205 .remove = &pcmcia_bus_remove_socket,
1209 struct bus_type pcmcia_bus_type = {
1211 .hotplug = pcmcia_bus_hotplug,
1212 .match = pcmcia_bus_match,
1213 .dev_attrs = pcmcia_dev_attrs,
1217 static int __init init_pcmcia_bus(void)
1219 spin_lock_init(&pcmcia_dev_list_lock);
1221 bus_register(&pcmcia_bus_type);
1222 class_interface_register(&pcmcia_bus_interface);
1224 pcmcia_setup_ioctl();
1228 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1229 * pcmcia_socket_class is already registered */
1232 static void __exit exit_pcmcia_bus(void)
1234 pcmcia_cleanup_ioctl();
1236 class_interface_unregister(&pcmcia_bus_interface);
1238 bus_unregister(&pcmcia_bus_type);
1240 module_exit(exit_pcmcia_bus);