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>
26 #include <linux/kref.h>
28 #define IN_CARD_SERVICES
29 #include <pcmcia/cs_types.h>
30 #include <pcmcia/cs.h>
31 #include <pcmcia/cistpl.h>
32 #include <pcmcia/ds.h>
33 #include <pcmcia/ss.h>
35 #include "cs_internal.h"
36 #include "ds_internal.h"
38 /*====================================================================*/
40 /* Module parameters */
42 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
43 MODULE_DESCRIPTION("PCMCIA Driver Services");
44 MODULE_LICENSE("GPL");
49 module_param_named(pc_debug, ds_pc_debug, int, 0644);
51 #define ds_dbg(lvl, fmt, arg...) do { \
52 if (ds_pc_debug > (lvl)) \
53 printk(KERN_DEBUG "ds: " fmt , ## arg); \
56 #define ds_dbg(lvl, fmt, arg...) do { } while (0)
59 spinlock_t pcmcia_dev_list_lock;
61 /*====================================================================*/
63 /* code which was in cs.c before */
65 /* String tables for error messages */
67 typedef struct lookup_t {
72 static const lookup_t error_table[] = {
73 { CS_SUCCESS, "Operation succeeded" },
74 { CS_BAD_ADAPTER, "Bad adapter" },
75 { CS_BAD_ATTRIBUTE, "Bad attribute", },
76 { CS_BAD_BASE, "Bad base address" },
77 { CS_BAD_EDC, "Bad EDC" },
78 { CS_BAD_IRQ, "Bad IRQ" },
79 { CS_BAD_OFFSET, "Bad offset" },
80 { CS_BAD_PAGE, "Bad page number" },
81 { CS_READ_FAILURE, "Read failure" },
82 { CS_BAD_SIZE, "Bad size" },
83 { CS_BAD_SOCKET, "Bad socket" },
84 { CS_BAD_TYPE, "Bad type" },
85 { CS_BAD_VCC, "Bad Vcc" },
86 { CS_BAD_VPP, "Bad Vpp" },
87 { CS_BAD_WINDOW, "Bad window" },
88 { CS_WRITE_FAILURE, "Write failure" },
89 { CS_NO_CARD, "No card present" },
90 { CS_UNSUPPORTED_FUNCTION, "Usupported function" },
91 { CS_UNSUPPORTED_MODE, "Unsupported mode" },
92 { CS_BAD_SPEED, "Bad speed" },
93 { CS_BUSY, "Resource busy" },
94 { CS_GENERAL_FAILURE, "General failure" },
95 { CS_WRITE_PROTECTED, "Write protected" },
96 { CS_BAD_ARG_LENGTH, "Bad argument length" },
97 { CS_BAD_ARGS, "Bad arguments" },
98 { CS_CONFIGURATION_LOCKED, "Configuration locked" },
99 { CS_IN_USE, "Resource in use" },
100 { CS_NO_MORE_ITEMS, "No more items" },
101 { CS_OUT_OF_RESOURCE, "Out of resource" },
102 { CS_BAD_HANDLE, "Bad handle" },
103 { CS_BAD_TUPLE, "Bad CIS tuple" }
107 static const lookup_t service_table[] = {
108 { AccessConfigurationRegister, "AccessConfigurationRegister" },
109 { AddSocketServices, "AddSocketServices" },
110 { AdjustResourceInfo, "AdjustResourceInfo" },
111 { CheckEraseQueue, "CheckEraseQueue" },
112 { CloseMemory, "CloseMemory" },
113 { DeregisterClient, "DeregisterClient" },
114 { DeregisterEraseQueue, "DeregisterEraseQueue" },
115 { GetCardServicesInfo, "GetCardServicesInfo" },
116 { GetClientInfo, "GetClientInfo" },
117 { GetConfigurationInfo, "GetConfigurationInfo" },
118 { GetEventMask, "GetEventMask" },
119 { GetFirstClient, "GetFirstClient" },
120 { GetFirstRegion, "GetFirstRegion" },
121 { GetFirstTuple, "GetFirstTuple" },
122 { GetNextClient, "GetNextClient" },
123 { GetNextRegion, "GetNextRegion" },
124 { GetNextTuple, "GetNextTuple" },
125 { GetStatus, "GetStatus" },
126 { GetTupleData, "GetTupleData" },
127 { MapMemPage, "MapMemPage" },
128 { ModifyConfiguration, "ModifyConfiguration" },
129 { ModifyWindow, "ModifyWindow" },
130 { OpenMemory, "OpenMemory" },
131 { ParseTuple, "ParseTuple" },
132 { ReadMemory, "ReadMemory" },
133 { RegisterClient, "RegisterClient" },
134 { RegisterEraseQueue, "RegisterEraseQueue" },
135 { RegisterMTD, "RegisterMTD" },
136 { ReleaseConfiguration, "ReleaseConfiguration" },
137 { ReleaseIO, "ReleaseIO" },
138 { ReleaseIRQ, "ReleaseIRQ" },
139 { ReleaseWindow, "ReleaseWindow" },
140 { RequestConfiguration, "RequestConfiguration" },
141 { RequestIO, "RequestIO" },
142 { RequestIRQ, "RequestIRQ" },
143 { RequestSocketMask, "RequestSocketMask" },
144 { RequestWindow, "RequestWindow" },
145 { ResetCard, "ResetCard" },
146 { SetEventMask, "SetEventMask" },
147 { ValidateCIS, "ValidateCIS" },
148 { WriteMemory, "WriteMemory" },
149 { BindDevice, "BindDevice" },
150 { BindMTD, "BindMTD" },
151 { ReportError, "ReportError" },
152 { SuspendCard, "SuspendCard" },
153 { ResumeCard, "ResumeCard" },
154 { EjectCard, "EjectCard" },
155 { InsertCard, "InsertCard" },
156 { ReplaceCIS, "ReplaceCIS" }
160 static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err)
168 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
170 for (i = 0; i < ARRAY_SIZE(service_table); i++)
171 if (service_table[i].key == err->func)
173 if (i < ARRAY_SIZE(service_table))
174 serv = service_table[i].msg;
176 serv = "Unknown service number";
178 for (i = 0; i < ARRAY_SIZE(error_table); i++)
179 if (error_table[i].key == err->retcode)
181 if (i < ARRAY_SIZE(error_table))
182 printk("%s: %s\n", serv, error_table[i].msg);
184 printk("%s: Unknown error code %#x\n", serv, err->retcode);
189 /* end of code which was in cs.c before */
191 /*======================================================================*/
193 void cs_error(struct pcmcia_device *p_dev, int func, int ret)
195 error_info_t err = { func, ret };
196 pcmcia_report_error(p_dev, &err);
198 EXPORT_SYMBOL(cs_error);
201 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
203 struct pcmcia_device_id *did = p_drv->id_table;
207 if (!p_drv->probe || !p_drv->remove)
208 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
209 "function\n", p_drv->drv.name);
211 while (did && did->match_flags) {
212 for (i=0; i<4; i++) {
213 if (!did->prod_id[i])
216 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
217 if (hash == did->prod_id_hash[i])
220 printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
221 "product string \"%s\": is 0x%x, should "
222 "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
223 did->prod_id_hash[i], hash);
224 printk(KERN_DEBUG "pcmcia: see "
225 "Documentation/pcmcia/devicetable.txt for "
235 #ifdef CONFIG_PCMCIA_LOAD_CIS
238 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
239 * @dev - the pcmcia device which needs a CIS override
240 * @filename - requested filename in /lib/firmware/cis/
242 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
243 * the one provided by the card is broken. The firmware files reside in
244 * /lib/firmware/cis/ in userspace.
246 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
248 struct pcmcia_socket *s = dev->socket;
249 const struct firmware *fw;
257 ds_dbg(1, "trying to load firmware %s\n", filename);
259 if (strlen(filename) > 14)
262 snprintf(path, 20, "%s", filename);
264 if (request_firmware(&fw, path, &dev->dev) == 0) {
265 if (fw->size >= CISTPL_MAX_CIS_SIZE)
268 cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL);
272 cis->Length = fw->size + 1;
273 memcpy(cis->Data, fw->data, fw->size);
275 if (!pcmcia_replace_cis(s, cis))
279 release_firmware(fw);
284 #else /* !CONFIG_PCMCIA_LOAD_CIS */
286 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
294 /*======================================================================*/
298 * pcmcia_register_driver - register a PCMCIA driver with the bus core
300 * Registers a PCMCIA driver with the PCMCIA bus core.
302 static int pcmcia_device_probe(struct device *dev);
303 static int pcmcia_device_remove(struct device * dev);
305 int pcmcia_register_driver(struct pcmcia_driver *driver)
310 pcmcia_check_driver(driver);
312 /* initialize common fields */
313 driver->drv.bus = &pcmcia_bus_type;
314 driver->drv.owner = driver->owner;
316 return driver_register(&driver->drv);
318 EXPORT_SYMBOL(pcmcia_register_driver);
321 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
323 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
325 driver_unregister(&driver->drv);
327 EXPORT_SYMBOL(pcmcia_unregister_driver);
330 /* pcmcia_device handling */
332 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
334 struct device *tmp_dev;
335 tmp_dev = get_device(&p_dev->dev);
338 return to_pcmcia_dev(tmp_dev);
341 void pcmcia_put_dev(struct pcmcia_device *p_dev)
344 put_device(&p_dev->dev);
347 static void pcmcia_release_function(struct kref *ref)
349 struct config_t *c = container_of(ref, struct config_t, ref);
353 static void pcmcia_release_dev(struct device *dev)
355 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
356 ds_dbg(1, "releasing dev %p\n", p_dev);
357 pcmcia_put_socket(p_dev->socket);
358 kfree(p_dev->devname);
359 kref_put(&p_dev->function_config->ref, pcmcia_release_function);
363 static void pcmcia_add_pseudo_device(struct pcmcia_socket *s)
365 if (!s->pcmcia_state.device_add_pending) {
366 s->pcmcia_state.device_add_pending = 1;
367 schedule_work(&s->device_add);
372 static int pcmcia_device_probe(struct device * dev)
374 struct pcmcia_device *p_dev;
375 struct pcmcia_driver *p_drv;
376 struct pcmcia_device_id *did;
377 struct pcmcia_socket *s;
380 dev = get_device(dev);
384 p_dev = to_pcmcia_dev(dev);
385 p_drv = to_pcmcia_drv(dev->driver);
388 if ((!p_drv->probe) || (!p_dev->function_config) ||
389 (!try_module_get(p_drv->owner))) {
394 p_dev->state &= ~CLIENT_UNBOUND;
396 ret = p_drv->probe(p_dev);
400 /* handle pseudo multifunction devices:
401 * there are at most two pseudo multifunction devices.
402 * if we're matching against the first, schedule a
403 * call which will then check whether there are two
404 * pseudo devices, and if not, add the second one.
406 did = (struct pcmcia_device_id *) p_dev->dev.driver_data;
407 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
408 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
409 pcmcia_add_pseudo_device(p_dev->socket);
413 module_put(p_drv->owner);
421 static int pcmcia_device_remove(struct device * dev)
423 struct pcmcia_device *p_dev;
424 struct pcmcia_driver *p_drv;
427 /* detach the "instance" */
428 p_dev = to_pcmcia_dev(dev);
429 p_drv = to_pcmcia_drv(dev->driver);
434 p_drv->remove(p_dev);
436 /* check for proper unloading */
437 if (p_dev->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
438 printk(KERN_INFO "pcmcia: driver %s did not release config properly\n",
441 for (i = 0; i < MAX_WIN; i++)
442 if (p_dev->state & CLIENT_WIN_REQ(i))
443 printk(KERN_INFO "pcmcia: driver %s did not release windows properly\n",
446 /* references from pcmcia_probe_device */
447 p_dev->state = CLIENT_UNBOUND;
448 pcmcia_put_dev(p_dev);
449 module_put(p_drv->owner);
456 * Removes a PCMCIA card from the device tree and socket list.
458 static void pcmcia_card_remove(struct pcmcia_socket *s)
460 struct pcmcia_device *p_dev;
463 ds_dbg(2, "unbind_request(%d)\n", s->sock);
468 /* unregister all pcmcia_devices registered with this socket*/
469 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
470 if (list_empty(&s->devices_list)) {
471 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
474 p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list);
475 list_del(&p_dev->socket_device_list);
476 p_dev->state |= CLIENT_STALE;
477 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
479 device_unregister(&p_dev->dev);
483 } /* unbind_request */
487 * pcmcia_device_query -- determine information about a pcmcia device
489 static int pcmcia_device_query(struct pcmcia_device *p_dev)
491 cistpl_manfid_t manf_id;
492 cistpl_funcid_t func_id;
493 cistpl_vers_1_t *vers1;
496 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
500 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
501 CISTPL_MANFID, &manf_id)) {
502 p_dev->manf_id = manf_id.manf;
503 p_dev->card_id = manf_id.card;
504 p_dev->has_manf_id = 1;
505 p_dev->has_card_id = 1;
508 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
509 CISTPL_FUNCID, &func_id)) {
510 p_dev->func_id = func_id.func;
511 p_dev->has_func_id = 1;
513 /* rule of thumb: cards with no FUNCID, but with
514 * common memory device geometry information, are
515 * probably memory cards (from pcmcia-cs) */
516 cistpl_device_geo_t *devgeo;
518 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
523 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
524 CISTPL_DEVICE_GEO, devgeo)) {
525 ds_dbg(0, "mem device geometry probably means "
527 p_dev->func_id = CISTPL_FUNCID_MEMORY;
528 p_dev->has_func_id = 1;
533 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
535 for (i=0; i < vers1->ns; i++) {
539 tmp = vers1->str + vers1->ofs[i];
541 length = strlen(tmp) + 1;
542 if ((length < 2) || (length > 255))
545 p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
547 if (!p_dev->prod_id[i])
550 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
560 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
561 * Serializes pcmcia_device_add; will most likely be removed in future.
563 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
564 * won't work, this doesn't matter much at the moment: the driver core doesn't
567 static DEFINE_MUTEX(device_add_lock);
569 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
571 struct pcmcia_device *p_dev, *tmp_dev;
575 s = pcmcia_get_socket(s);
579 mutex_lock(&device_add_lock);
581 /* max of 2 devices per card */
582 if (s->device_count == 2)
585 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
590 p_dev->device_no = (s->device_count++);
591 p_dev->func = function;
592 if (s->functions < function)
593 s->functions = function;
595 p_dev->dev.bus = &pcmcia_bus_type;
596 p_dev->dev.parent = s->dev.dev;
597 p_dev->dev.release = pcmcia_release_dev;
598 bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
600 p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL);
603 sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id);
606 p_dev->state = CLIENT_UNBOUND;
609 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
612 * p_dev->function_config must be the same for all card functions.
613 * Note that this is serialized by the device_add_lock, so that
614 * only one such struct will be created.
616 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list)
617 if (p_dev->func == tmp_dev->func) {
618 p_dev->function_config = tmp_dev->function_config;
619 kref_get(&p_dev->function_config->ref);
622 /* Add to the list in pcmcia_bus_socket */
623 list_add_tail(&p_dev->socket_device_list, &s->devices_list);
625 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
627 if (!p_dev->function_config) {
628 p_dev->function_config = kzalloc(sizeof(struct config_t),
630 if (!p_dev->function_config)
632 kref_init(&p_dev->function_config->ref);
635 printk(KERN_NOTICE "pcmcia: registering new device %s\n",
638 pcmcia_device_query(p_dev);
640 if (device_register(&p_dev->dev))
643 mutex_unlock(&device_add_lock);
648 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
649 list_del(&p_dev->socket_device_list);
650 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
653 kfree(p_dev->devname);
657 mutex_unlock(&device_add_lock);
658 pcmcia_put_socket(s);
664 static int pcmcia_card_add(struct pcmcia_socket *s)
667 cistpl_longlink_mfc_t mfc;
668 unsigned int no_funcs, i;
671 if (!(s->resource_setup_done))
672 return -EAGAIN; /* try again, but later... */
674 if (pcmcia_validate_mem(s))
675 return -EAGAIN; /* try again, but later... */
677 ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
678 if (ret || !cisinfo.Chains) {
679 ds_dbg(0, "invalid CIS or invalid resources\n");
683 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
688 for (i=0; i < no_funcs; i++)
689 pcmcia_device_add(s, i);
695 static void pcmcia_delayed_add_pseudo_device(void *data)
697 struct pcmcia_socket *s = data;
698 pcmcia_device_add(s, 0);
699 s->pcmcia_state.device_add_pending = 0;
702 static int pcmcia_requery(struct device *dev, void * _data)
704 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
705 if (!p_dev->dev.driver)
706 pcmcia_device_query(p_dev);
711 static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
716 /* must be called with skt_mutex held */
717 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
718 if (list_empty(&skt->devices_list))
720 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
722 /* if no devices were added for this socket yet because of
723 * missing resource information or other trouble, we need to
726 int ret = pcmcia_card_add(skt);
731 /* some device information might have changed because of a CIS
732 * update or because we can finally read it correctly... so
733 * determine it again, overwriting old values if necessary. */
734 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
736 /* we re-scan all devices, not just the ones connected to this
737 * socket. This does not matter, though. */
738 bus_rescan_devices(&pcmcia_bus_type);
741 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
742 struct pcmcia_device_id *did)
744 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
745 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
749 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
750 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
754 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
755 if (dev->func != did->function)
759 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
760 if (!dev->prod_id[0])
762 if (strcmp(did->prod_id[0], dev->prod_id[0]))
766 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
767 if (!dev->prod_id[1])
769 if (strcmp(did->prod_id[1], dev->prod_id[1]))
773 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
774 if (!dev->prod_id[2])
776 if (strcmp(did->prod_id[2], dev->prod_id[2]))
780 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
781 if (!dev->prod_id[3])
783 if (strcmp(did->prod_id[3], dev->prod_id[3]))
787 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
788 if (dev->device_no != did->device_no)
792 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
793 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
796 /* if this is a pseudo-multi-function device,
797 * we need explicit matches */
798 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
803 /* also, FUNC_ID matching needs to be activated by userspace
804 * after it has re-checked that there is no possible module
805 * with a prod_id/manf_id/card_id match.
807 if (!dev->allow_func_id_match)
811 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
812 if (!dev->socket->fake_cis)
813 pcmcia_load_firmware(dev, did->cisfile);
815 if (!dev->socket->fake_cis)
819 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
824 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
828 dev->dev.driver_data = (void *) did;
834 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
835 struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
836 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
837 struct pcmcia_device_id *did = p_drv->id_table;
839 /* matching by cardmgr */
840 if (p_dev->cardmgr == p_drv)
843 while (did && did->match_flags) {
844 if (pcmcia_devmatch(p_dev, did))
852 #ifdef CONFIG_HOTPLUG
854 static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
855 char *buffer, int buffer_size)
857 struct pcmcia_device *p_dev;
859 u32 hash[4] = { 0, 0, 0, 0};
864 p_dev = to_pcmcia_dev(dev);
866 /* calculate hashes */
867 for (i=0; i<4; i++) {
868 if (!p_dev->prod_id[i])
870 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
875 if (add_uevent_var(envp, num_envp, &i,
876 buffer, buffer_size, &length,
878 p_dev->socket->sock))
881 if (add_uevent_var(envp, num_envp, &i,
882 buffer, buffer_size, &length,
887 if (add_uevent_var(envp, num_envp, &i,
888 buffer, buffer_size, &length,
889 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
890 "pa%08Xpb%08Xpc%08Xpd%08X",
891 p_dev->has_manf_id ? p_dev->manf_id : 0,
892 p_dev->has_card_id ? p_dev->card_id : 0,
893 p_dev->has_func_id ? p_dev->func_id : 0,
909 static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
910 char *buffer, int buffer_size)
917 /************************ per-device sysfs output ***************************/
919 #define pcmcia_device_attr(field, test, format) \
920 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
922 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
923 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
926 #define pcmcia_device_stringattr(name, field) \
927 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
929 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
930 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
933 pcmcia_device_attr(func, socket, "0x%02x\n");
934 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
935 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
936 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
937 pcmcia_device_stringattr(prod_id1, prod_id[0]);
938 pcmcia_device_stringattr(prod_id2, prod_id[1]);
939 pcmcia_device_stringattr(prod_id3, prod_id[2]);
940 pcmcia_device_stringattr(prod_id4, prod_id[3]);
943 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf)
945 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
947 if (p_dev->dev.power.power_state.event != PM_EVENT_ON)
948 return sprintf(buf, "off\n");
950 return sprintf(buf, "on\n");
953 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr,
954 const char *buf, size_t count)
956 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
962 if ((p_dev->dev.power.power_state.event == PM_EVENT_ON) &&
963 (!strncmp(buf, "off", 3)))
964 ret = dpm_runtime_suspend(dev, PMSG_SUSPEND);
965 else if ((p_dev->dev.power.power_state.event != PM_EVENT_ON) &&
966 (!strncmp(buf, "on", 2)))
967 dpm_runtime_resume(dev);
969 return ret ? ret : count;
973 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
975 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
977 u32 hash[4] = { 0, 0, 0, 0};
979 /* calculate hashes */
980 for (i=0; i<4; i++) {
981 if (!p_dev->prod_id[i])
983 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i]));
985 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
986 "pa%08Xpb%08Xpc%08Xpd%08X\n",
987 p_dev->has_manf_id ? p_dev->manf_id : 0,
988 p_dev->has_card_id ? p_dev->card_id : 0,
989 p_dev->has_func_id ? p_dev->func_id : 0,
990 p_dev->func, p_dev->device_no,
991 hash[0], hash[1], hash[2], hash[3]);
994 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
995 struct device_attribute *attr, const char *buf, size_t count)
997 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1002 mutex_lock(&p_dev->socket->skt_mutex);
1003 p_dev->allow_func_id_match = 1;
1004 mutex_unlock(&p_dev->socket->skt_mutex);
1006 bus_rescan_devices(&pcmcia_bus_type);
1011 static struct device_attribute pcmcia_dev_attrs[] = {
1012 __ATTR(function, 0444, func_show, NULL),
1013 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state),
1017 __ATTR_RO(prod_id1),
1018 __ATTR_RO(prod_id2),
1019 __ATTR_RO(prod_id3),
1020 __ATTR_RO(prod_id4),
1021 __ATTR_RO(modalias),
1022 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
1026 /* PM support, also needed for reset */
1028 static int pcmcia_dev_suspend(struct device * dev, pm_message_t state)
1030 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1031 struct pcmcia_driver *p_drv = NULL;
1034 p_drv = to_pcmcia_drv(dev->driver);
1036 if (p_drv && p_drv->suspend)
1037 return p_drv->suspend(p_dev);
1043 static int pcmcia_dev_resume(struct device * dev)
1045 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1046 struct pcmcia_driver *p_drv = NULL;
1049 p_drv = to_pcmcia_drv(dev->driver);
1051 if (p_drv && p_drv->resume)
1052 return p_drv->resume(p_dev);
1058 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
1060 struct pcmcia_socket *skt = _data;
1061 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1063 if (p_dev->socket != skt)
1066 return dpm_runtime_suspend(dev, PMSG_SUSPEND);
1069 static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
1071 struct pcmcia_socket *skt = _data;
1072 struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1074 if (p_dev->socket != skt)
1077 dpm_runtime_resume(dev);
1082 static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1084 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1088 static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1090 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1091 pcmcia_bus_suspend_callback)) {
1092 pcmcia_bus_resume(skt);
1099 /*======================================================================
1101 The card status event handler.
1103 ======================================================================*/
1105 /* Normally, the event is passed to individual drivers after
1106 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
1107 * is inversed to maintain historic compatibility.
1110 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
1112 struct pcmcia_socket *s = pcmcia_get_socket(skt);
1114 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
1115 event, priority, skt);
1118 case CS_EVENT_CARD_REMOVAL:
1119 s->pcmcia_state.present = 0;
1120 pcmcia_card_remove(skt);
1121 handle_event(skt, event);
1124 case CS_EVENT_CARD_INSERTION:
1125 s->pcmcia_state.present = 1;
1126 pcmcia_card_add(skt);
1127 handle_event(skt, event);
1130 case CS_EVENT_EJECTION_REQUEST:
1133 case CS_EVENT_PM_SUSPEND:
1134 case CS_EVENT_PM_RESUME:
1135 case CS_EVENT_RESET_PHYSICAL:
1136 case CS_EVENT_CARD_RESET:
1138 handle_event(skt, event);
1142 pcmcia_put_socket(s);
1148 static struct pcmcia_callback pcmcia_bus_callback = {
1149 .owner = THIS_MODULE,
1151 .requery = pcmcia_bus_rescan,
1152 .suspend = pcmcia_bus_suspend,
1153 .resume = pcmcia_bus_resume,
1156 static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev,
1157 struct class_interface *class_intf)
1159 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1162 socket = pcmcia_get_socket(socket);
1164 printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
1169 * Ugly. But we want to wait for the socket threads to have started up.
1170 * We really should let the drivers themselves drive some of this..
1174 #ifdef CONFIG_PCMCIA_IOCTL
1175 init_waitqueue_head(&socket->queue);
1177 INIT_LIST_HEAD(&socket->devices_list);
1178 INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket);
1179 memset(&socket->pcmcia_state, 0, sizeof(u8));
1180 socket->device_count = 0;
1182 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1184 printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
1185 pcmcia_put_socket(socket);
1192 static void pcmcia_bus_remove_socket(struct class_device *class_dev,
1193 struct class_interface *class_intf)
1195 struct pcmcia_socket *socket = class_get_devdata(class_dev);
1200 socket->pcmcia_state.dead = 1;
1201 pccard_register_pcmcia(socket, NULL);
1203 pcmcia_put_socket(socket);
1209 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1210 static struct class_interface pcmcia_bus_interface = {
1211 .class = &pcmcia_socket_class,
1212 .add = &pcmcia_bus_add_socket,
1213 .remove = &pcmcia_bus_remove_socket,
1217 struct bus_type pcmcia_bus_type = {
1219 .uevent = pcmcia_bus_uevent,
1220 .match = pcmcia_bus_match,
1221 .dev_attrs = pcmcia_dev_attrs,
1222 .probe = pcmcia_device_probe,
1223 .remove = pcmcia_device_remove,
1224 .suspend = pcmcia_dev_suspend,
1225 .resume = pcmcia_dev_resume,
1229 static int __init init_pcmcia_bus(void)
1231 spin_lock_init(&pcmcia_dev_list_lock);
1233 bus_register(&pcmcia_bus_type);
1234 class_interface_register(&pcmcia_bus_interface);
1236 pcmcia_setup_ioctl();
1240 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1241 * pcmcia_socket_class is already registered */
1244 static void __exit exit_pcmcia_bus(void)
1246 pcmcia_cleanup_ioctl();
1248 class_interface_unregister(&pcmcia_bus_interface);
1250 bus_unregister(&pcmcia_bus_type);
1252 module_exit(exit_pcmcia_bus);