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 - 2004 Dominik Brodowski
16 #include <linux/config.h>
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/init.h>
20 #include <linux/kernel.h>
21 #include <linux/major.h>
22 #include <linux/string.h>
23 #include <linux/errno.h>
24 #include <linux/slab.h>
26 #include <linux/fcntl.h>
27 #include <linux/sched.h>
28 #include <linux/smp_lock.h>
29 #include <linux/timer.h>
30 #include <linux/ioctl.h>
31 #include <linux/proc_fs.h>
32 #include <linux/poll.h>
33 #include <linux/pci.h>
34 #include <linux/list.h>
35 #include <linux/delay.h>
36 #include <linux/kref.h>
37 #include <linux/workqueue.h>
38 #include <linux/crc32.h>
39 #include <linux/firmware.h>
41 #include <asm/atomic.h>
43 #define IN_CARD_SERVICES
44 #include <pcmcia/version.h>
45 #include <pcmcia/cs_types.h>
46 #include <pcmcia/cs.h>
47 #include <pcmcia/bulkmem.h>
48 #include <pcmcia/cistpl.h>
49 #include <pcmcia/ds.h>
50 #include <pcmcia/ss.h>
52 #include "cs_internal.h"
53 #include "ds_internal.h"
55 /*====================================================================*/
57 /* Module parameters */
59 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
60 MODULE_DESCRIPTION("PCMCIA Driver Services");
61 MODULE_LICENSE("GPL");
66 module_param_named(pc_debug
, ds_pc_debug
, int, 0644);
68 #define ds_dbg(lvl, fmt, arg...) do { \
69 if (ds_pc_debug > (lvl)) \
70 printk(KERN_DEBUG "ds: " fmt , ## arg); \
73 #define ds_dbg(lvl, fmt, arg...) do { } while (0)
76 spinlock_t pcmcia_dev_list_lock
;
78 static int unbind_request(struct pcmcia_bus_socket
*s
);
80 /*====================================================================*/
82 /* code which was in cs.c before */
84 /* String tables for error messages */
86 typedef struct lookup_t
{
91 static const lookup_t error_table
[] = {
92 { CS_SUCCESS
, "Operation succeeded" },
93 { CS_BAD_ADAPTER
, "Bad adapter" },
94 { CS_BAD_ATTRIBUTE
, "Bad attribute", },
95 { CS_BAD_BASE
, "Bad base address" },
96 { CS_BAD_EDC
, "Bad EDC" },
97 { CS_BAD_IRQ
, "Bad IRQ" },
98 { CS_BAD_OFFSET
, "Bad offset" },
99 { CS_BAD_PAGE
, "Bad page number" },
100 { CS_READ_FAILURE
, "Read failure" },
101 { CS_BAD_SIZE
, "Bad size" },
102 { CS_BAD_SOCKET
, "Bad socket" },
103 { CS_BAD_TYPE
, "Bad type" },
104 { CS_BAD_VCC
, "Bad Vcc" },
105 { CS_BAD_VPP
, "Bad Vpp" },
106 { CS_BAD_WINDOW
, "Bad window" },
107 { CS_WRITE_FAILURE
, "Write failure" },
108 { CS_NO_CARD
, "No card present" },
109 { CS_UNSUPPORTED_FUNCTION
, "Usupported function" },
110 { CS_UNSUPPORTED_MODE
, "Unsupported mode" },
111 { CS_BAD_SPEED
, "Bad speed" },
112 { CS_BUSY
, "Resource busy" },
113 { CS_GENERAL_FAILURE
, "General failure" },
114 { CS_WRITE_PROTECTED
, "Write protected" },
115 { CS_BAD_ARG_LENGTH
, "Bad argument length" },
116 { CS_BAD_ARGS
, "Bad arguments" },
117 { CS_CONFIGURATION_LOCKED
, "Configuration locked" },
118 { CS_IN_USE
, "Resource in use" },
119 { CS_NO_MORE_ITEMS
, "No more items" },
120 { CS_OUT_OF_RESOURCE
, "Out of resource" },
121 { CS_BAD_HANDLE
, "Bad handle" },
122 { CS_BAD_TUPLE
, "Bad CIS tuple" }
126 static const lookup_t service_table
[] = {
127 { AccessConfigurationRegister
, "AccessConfigurationRegister" },
128 { AddSocketServices
, "AddSocketServices" },
129 { AdjustResourceInfo
, "AdjustResourceInfo" },
130 { CheckEraseQueue
, "CheckEraseQueue" },
131 { CloseMemory
, "CloseMemory" },
132 { DeregisterClient
, "DeregisterClient" },
133 { DeregisterEraseQueue
, "DeregisterEraseQueue" },
134 { GetCardServicesInfo
, "GetCardServicesInfo" },
135 { GetClientInfo
, "GetClientInfo" },
136 { GetConfigurationInfo
, "GetConfigurationInfo" },
137 { GetEventMask
, "GetEventMask" },
138 { GetFirstClient
, "GetFirstClient" },
139 { GetFirstRegion
, "GetFirstRegion" },
140 { GetFirstTuple
, "GetFirstTuple" },
141 { GetNextClient
, "GetNextClient" },
142 { GetNextRegion
, "GetNextRegion" },
143 { GetNextTuple
, "GetNextTuple" },
144 { GetStatus
, "GetStatus" },
145 { GetTupleData
, "GetTupleData" },
146 { MapMemPage
, "MapMemPage" },
147 { ModifyConfiguration
, "ModifyConfiguration" },
148 { ModifyWindow
, "ModifyWindow" },
149 { OpenMemory
, "OpenMemory" },
150 { ParseTuple
, "ParseTuple" },
151 { ReadMemory
, "ReadMemory" },
152 { RegisterClient
, "RegisterClient" },
153 { RegisterEraseQueue
, "RegisterEraseQueue" },
154 { RegisterMTD
, "RegisterMTD" },
155 { ReleaseConfiguration
, "ReleaseConfiguration" },
156 { ReleaseIO
, "ReleaseIO" },
157 { ReleaseIRQ
, "ReleaseIRQ" },
158 { ReleaseWindow
, "ReleaseWindow" },
159 { RequestConfiguration
, "RequestConfiguration" },
160 { RequestIO
, "RequestIO" },
161 { RequestIRQ
, "RequestIRQ" },
162 { RequestSocketMask
, "RequestSocketMask" },
163 { RequestWindow
, "RequestWindow" },
164 { ResetCard
, "ResetCard" },
165 { SetEventMask
, "SetEventMask" },
166 { ValidateCIS
, "ValidateCIS" },
167 { WriteMemory
, "WriteMemory" },
168 { BindDevice
, "BindDevice" },
169 { BindMTD
, "BindMTD" },
170 { ReportError
, "ReportError" },
171 { SuspendCard
, "SuspendCard" },
172 { ResumeCard
, "ResumeCard" },
173 { EjectCard
, "EjectCard" },
174 { InsertCard
, "InsertCard" },
175 { ReplaceCIS
, "ReplaceCIS" }
179 static int pcmcia_report_error(client_handle_t handle
, error_info_t
*err
)
184 if (CHECK_HANDLE(handle
))
187 struct pcmcia_device
*p_dev
= handle_to_pdev(handle
);
188 printk(KERN_NOTICE
"%s: ", p_dev
->dev
.bus_id
);
191 for (i
= 0; i
< ARRAY_SIZE(service_table
); i
++)
192 if (service_table
[i
].key
== err
->func
)
194 if (i
< ARRAY_SIZE(service_table
))
195 serv
= service_table
[i
].msg
;
197 serv
= "Unknown service number";
199 for (i
= 0; i
< ARRAY_SIZE(error_table
); i
++)
200 if (error_table
[i
].key
== err
->retcode
)
202 if (i
< ARRAY_SIZE(error_table
))
203 printk("%s: %s\n", serv
, error_table
[i
].msg
);
205 printk("%s: Unknown error code %#x\n", serv
, err
->retcode
);
210 /* end of code which was in cs.c before */
212 /*======================================================================*/
214 void cs_error(client_handle_t handle
, int func
, int ret
)
216 error_info_t err
= { func
, ret
};
217 pcmcia_report_error(handle
, &err
);
219 EXPORT_SYMBOL(cs_error
);
222 static void pcmcia_check_driver(struct pcmcia_driver
*p_drv
)
224 struct pcmcia_device_id
*did
= p_drv
->id_table
;
228 while (did
&& did
->match_flags
) {
229 for (i
=0; i
<4; i
++) {
230 if (!did
->prod_id
[i
])
233 hash
= crc32(0, did
->prod_id
[i
], strlen(did
->prod_id
[i
]));
234 if (hash
== did
->prod_id_hash
[i
])
237 printk(KERN_DEBUG
"pcmcia: %s: invalid hash for "
238 "product string \"%s\": is 0x%x, should "
239 "be 0x%x\n", p_drv
->drv
.name
, did
->prod_id
[i
],
240 did
->prod_id_hash
[i
], hash
);
241 printk(KERN_DEBUG
"pcmcia: see "
242 "Documentation/pcmcia/devicetable.txt for "
252 #ifdef CONFIG_PCMCIA_LOAD_CIS
255 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
256 * @dev - the pcmcia device which needs a CIS override
257 * @filename - requested filename in /lib/firmware/cis/
259 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
260 * the one provided by the card is broken. The firmware files reside in
261 * /lib/firmware/cis/ in userspace.
263 static int pcmcia_load_firmware(struct pcmcia_device
*dev
, char * filename
)
265 struct pcmcia_socket
*s
= dev
->socket
;
266 const struct firmware
*fw
;
274 ds_dbg(1, "trying to load firmware %s\n", filename
);
276 if (strlen(filename
) > 14)
279 snprintf(path
, 20, "%s", filename
);
281 if (request_firmware(&fw
, path
, &dev
->dev
) == 0) {
282 if (fw
->size
>= CISTPL_MAX_CIS_SIZE
)
285 cis
= kmalloc(sizeof(cisdump_t
), GFP_KERNEL
);
289 memset(cis
, 0, sizeof(cisdump_t
));
291 cis
->Length
= fw
->size
+ 1;
292 memcpy(cis
->Data
, fw
->data
, fw
->size
);
294 if (!pcmcia_replace_cis(s
, cis
))
298 release_firmware(fw
);
303 #else /* !CONFIG_PCMCIA_LOAD_CIS */
305 static inline int pcmcia_load_firmware(struct pcmcia_device
*dev
, char * filename
)
313 /*======================================================================*/
316 void pcmcia_release_bus_socket(struct kref
*refcount
)
318 struct pcmcia_bus_socket
*s
= container_of(refcount
, struct pcmcia_bus_socket
, refcount
);
319 pcmcia_put_socket(s
->parent
);
323 void pcmcia_put_bus_socket(struct pcmcia_bus_socket
*s
)
325 kref_put(&s
->refcount
, pcmcia_release_bus_socket
);
328 struct pcmcia_bus_socket
*pcmcia_get_bus_socket(struct pcmcia_bus_socket
*s
)
330 kref_get(&s
->refcount
);
335 * pcmcia_register_driver - register a PCMCIA driver with the bus core
337 * Registers a PCMCIA driver with the PCMCIA bus core.
339 static int pcmcia_device_probe(struct device
*dev
);
340 static int pcmcia_device_remove(struct device
* dev
);
342 int pcmcia_register_driver(struct pcmcia_driver
*driver
)
347 pcmcia_check_driver(driver
);
349 /* initialize common fields */
350 driver
->drv
.bus
= &pcmcia_bus_type
;
351 driver
->drv
.owner
= driver
->owner
;
352 driver
->drv
.probe
= pcmcia_device_probe
;
353 driver
->drv
.remove
= pcmcia_device_remove
;
355 return driver_register(&driver
->drv
);
357 EXPORT_SYMBOL(pcmcia_register_driver
);
360 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
362 void pcmcia_unregister_driver(struct pcmcia_driver
*driver
)
364 driver_unregister(&driver
->drv
);
366 EXPORT_SYMBOL(pcmcia_unregister_driver
);
369 /* pcmcia_device handling */
371 struct pcmcia_device
* pcmcia_get_dev(struct pcmcia_device
*p_dev
)
373 struct device
*tmp_dev
;
374 tmp_dev
= get_device(&p_dev
->dev
);
377 return to_pcmcia_dev(tmp_dev
);
380 void pcmcia_put_dev(struct pcmcia_device
*p_dev
)
383 put_device(&p_dev
->dev
);
386 static void pcmcia_release_dev(struct device
*dev
)
388 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
389 ds_dbg(1, "releasing dev %p\n", p_dev
);
390 pcmcia_put_bus_socket(p_dev
->socket
->pcmcia
);
395 static int pcmcia_device_probe(struct device
* dev
)
397 struct pcmcia_device
*p_dev
;
398 struct pcmcia_driver
*p_drv
;
401 dev
= get_device(dev
);
405 p_dev
= to_pcmcia_dev(dev
);
406 p_drv
= to_pcmcia_drv(dev
->driver
);
408 if (!try_module_get(p_drv
->owner
)) {
414 p_dev
->instance
= p_drv
->attach();
415 if ((!p_dev
->instance
) || (p_dev
->client
.state
& CLIENT_UNBOUND
)) {
416 printk(KERN_NOTICE
"ds: unable to create instance "
417 "of '%s'!\n", p_drv
->drv
.name
);
423 module_put(p_drv
->owner
);
425 if ((ret
) || !(p_drv
->attach
))
431 static int pcmcia_device_remove(struct device
* dev
)
433 struct pcmcia_device
*p_dev
;
434 struct pcmcia_driver
*p_drv
;
436 /* detach the "instance" */
437 p_dev
= to_pcmcia_dev(dev
);
438 p_drv
= to_pcmcia_drv(dev
->driver
);
441 if ((p_drv
->detach
) && (p_dev
->instance
)) {
442 p_drv
->detach(p_dev
->instance
);
443 /* from pcmcia_probe_device */
444 put_device(&p_dev
->dev
);
446 module_put(p_drv
->owner
);
455 * pcmcia_device_query -- determine information about a pcmcia device
457 static int pcmcia_device_query(struct pcmcia_device
*p_dev
)
459 cistpl_manfid_t manf_id
;
460 cistpl_funcid_t func_id
;
461 cistpl_vers_1_t vers1
;
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
;
481 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
482 CISTPL_DEVICE_GEO
, &devgeo
)) {
483 ds_dbg(0, "mem device geometry probably means "
485 p_dev
->func_id
= CISTPL_FUNCID_MEMORY
;
486 p_dev
->has_func_id
= 1;
490 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
, CISTPL_VERS_1
,
492 for (i
=0; i
< vers1
.ns
; i
++) {
496 tmp
= vers1
.str
+ vers1
.ofs
[i
];
498 length
= strlen(tmp
) + 1;
499 if ((length
< 3) || (length
> 255))
502 p_dev
->prod_id
[i
] = kmalloc(sizeof(char) * length
,
504 if (!p_dev
->prod_id
[i
])
507 p_dev
->prod_id
[i
] = strncpy(p_dev
->prod_id
[i
],
516 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
517 * Serializes pcmcia_device_add; will most likely be removed in future.
519 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
520 * won't work, this doesn't matter much at the moment: the driver core doesn't
523 static DECLARE_MUTEX(device_add_lock
);
525 struct pcmcia_device
* pcmcia_device_add(struct pcmcia_bus_socket
*s
, unsigned int function
)
527 struct pcmcia_device
*p_dev
;
530 s
= pcmcia_get_bus_socket(s
);
534 down(&device_add_lock
);
536 /* max of 2 devices per card */
537 if (s
->device_count
== 2)
540 p_dev
= kmalloc(sizeof(struct pcmcia_device
), GFP_KERNEL
);
543 memset(p_dev
, 0, sizeof(struct pcmcia_device
));
545 p_dev
->socket
= s
->parent
;
546 p_dev
->device_no
= (s
->device_count
++);
547 p_dev
->func
= function
;
549 p_dev
->dev
.bus
= &pcmcia_bus_type
;
550 p_dev
->dev
.parent
= s
->parent
->dev
.dev
;
551 p_dev
->dev
.release
= pcmcia_release_dev
;
552 sprintf (p_dev
->dev
.bus_id
, "%d.%d", p_dev
->socket
->sock
, p_dev
->device_no
);
555 p_dev
->client
.client_magic
= CLIENT_MAGIC
;
556 p_dev
->client
.Socket
= s
->parent
;
557 p_dev
->client
.Function
= function
;
558 p_dev
->client
.state
= CLIENT_UNBOUND
;
560 /* Add to the list in pcmcia_bus_socket */
561 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
562 list_add_tail(&p_dev
->socket_device_list
, &s
->devices_list
);
563 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
565 pcmcia_device_query(p_dev
);
567 if (device_register(&p_dev
->dev
)) {
568 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
569 list_del(&p_dev
->socket_device_list
);
570 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
575 up(&device_add_lock
);
583 up(&device_add_lock
);
584 pcmcia_put_bus_socket(s
);
590 static int pcmcia_card_add(struct pcmcia_socket
*s
)
593 cistpl_longlink_mfc_t mfc
;
594 unsigned int no_funcs
, i
;
597 if (!(s
->resource_setup_done
))
598 return -EAGAIN
; /* try again, but later... */
600 pcmcia_validate_mem(s
);
601 ret
= pccard_validate_cis(s
, BIND_FN_ALL
, &cisinfo
);
602 if (ret
|| !cisinfo
.Chains
) {
603 ds_dbg(0, "invalid CIS or invalid resources\n");
607 if (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_LONGLINK_MFC
, &mfc
))
612 /* this doesn't handle multifunction devices on one pcmcia function
614 for (i
=0; i
< no_funcs
; i
++)
615 pcmcia_device_add(s
->pcmcia
, i
);
621 static void pcmcia_delayed_add_pseudo_device(void *data
)
623 struct pcmcia_bus_socket
*s
= data
;
624 pcmcia_device_add(s
, 0);
625 s
->pcmcia_state
.device_add_pending
= 0;
628 static inline void pcmcia_add_pseudo_device(struct pcmcia_bus_socket
*s
)
630 if (!s
->pcmcia_state
.device_add_pending
) {
631 schedule_work(&s
->device_add
);
632 s
->pcmcia_state
.device_add_pending
= 1;
637 static int pcmcia_requery(struct device
*dev
, void * _data
)
639 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
640 if (!p_dev
->dev
.driver
)
641 pcmcia_device_query(p_dev
);
646 static void pcmcia_bus_rescan(struct pcmcia_socket
*skt
)
651 /* must be called with skt_sem held */
652 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
653 if (list_empty(&skt
->pcmcia
->devices_list
))
655 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
657 /* if no devices were added for this socket yet because of
658 * missing resource information or other trouble, we need to
661 int ret
= pcmcia_card_add(skt
);
666 /* some device information might have changed because of a CIS
667 * update or because we can finally read it correctly... so
668 * determine it again, overwriting old values if necessary. */
669 bus_for_each_dev(&pcmcia_bus_type
, NULL
, NULL
, pcmcia_requery
);
671 /* we re-scan all devices, not just the ones connected to this
672 * socket. This does not matter, though. */
673 bus_rescan_devices(&pcmcia_bus_type
);
676 static inline int pcmcia_devmatch(struct pcmcia_device
*dev
,
677 struct pcmcia_device_id
*did
)
679 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_MANF_ID
) {
680 if ((!dev
->has_manf_id
) || (dev
->manf_id
!= did
->manf_id
))
684 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_CARD_ID
) {
685 if ((!dev
->has_card_id
) || (dev
->card_id
!= did
->card_id
))
689 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FUNCTION
) {
690 if (dev
->func
!= did
->function
)
694 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID1
) {
695 if (!dev
->prod_id
[0])
697 if (strcmp(did
->prod_id
[0], dev
->prod_id
[0]))
701 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID2
) {
702 if (!dev
->prod_id
[1])
704 if (strcmp(did
->prod_id
[1], dev
->prod_id
[1]))
708 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID3
) {
709 if (!dev
->prod_id
[2])
711 if (strcmp(did
->prod_id
[2], dev
->prod_id
[2]))
715 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID4
) {
716 if (!dev
->prod_id
[3])
718 if (strcmp(did
->prod_id
[3], dev
->prod_id
[3]))
722 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_DEVICE_NO
) {
723 /* handle pseudo multifunction devices:
724 * there are at most two pseudo multifunction devices.
725 * if we're matching against the first, schedule a
726 * call which will then check whether there are two
727 * pseudo devices, and if not, add the second one.
729 if (dev
->device_no
== 0)
730 pcmcia_add_pseudo_device(dev
->socket
->pcmcia
);
732 if (dev
->device_no
!= did
->device_no
)
736 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FUNC_ID
) {
737 if ((!dev
->has_func_id
) || (dev
->func_id
!= did
->func_id
))
740 /* if this is a pseudo-multi-function device,
741 * we need explicit matches */
742 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_DEVICE_NO
)
747 /* also, FUNC_ID matching needs to be activated by userspace
748 * after it has re-checked that there is no possible module
749 * with a prod_id/manf_id/card_id match.
751 if (!dev
->allow_func_id_match
)
755 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FAKE_CIS
) {
756 if (!dev
->socket
->fake_cis
)
757 pcmcia_load_firmware(dev
, did
->cisfile
);
759 if (!dev
->socket
->fake_cis
)
763 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_ANONYMOUS
) {
768 if (dev
->has_manf_id
|| dev
->has_card_id
|| dev
->has_func_id
)
772 dev
->dev
.driver_data
= (void *) did
;
778 static int pcmcia_bus_match(struct device
* dev
, struct device_driver
* drv
) {
779 struct pcmcia_device
* p_dev
= to_pcmcia_dev(dev
);
780 struct pcmcia_driver
* p_drv
= to_pcmcia_drv(drv
);
781 struct pcmcia_device_id
*did
= p_drv
->id_table
;
783 /* matching by cardmgr */
784 if (p_dev
->cardmgr
== p_drv
)
787 while (did
&& did
->match_flags
) {
788 if (pcmcia_devmatch(p_dev
, did
))
796 #ifdef CONFIG_HOTPLUG
798 static int pcmcia_bus_hotplug(struct device
*dev
, char **envp
, int num_envp
,
799 char *buffer
, int buffer_size
)
801 struct pcmcia_device
*p_dev
;
803 u32 hash
[4] = { 0, 0, 0, 0};
808 p_dev
= to_pcmcia_dev(dev
);
810 /* calculate hashes */
811 for (i
=0; i
<4; i
++) {
812 if (!p_dev
->prod_id
[i
])
814 hash
[i
] = crc32(0, p_dev
->prod_id
[i
], strlen(p_dev
->prod_id
[i
]));
819 if (add_hotplug_env_var(envp
, num_envp
, &i
,
820 buffer
, buffer_size
, &length
,
822 p_dev
->socket
->sock
))
825 if (add_hotplug_env_var(envp
, num_envp
, &i
,
826 buffer
, buffer_size
, &length
,
831 if (add_hotplug_env_var(envp
, num_envp
, &i
,
832 buffer
, buffer_size
, &length
,
833 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
834 "pa%08Xpb%08Xpc%08Xpd%08X",
835 p_dev
->has_manf_id
? p_dev
->manf_id
: 0,
836 p_dev
->has_card_id
? p_dev
->card_id
: 0,
837 p_dev
->has_func_id
? p_dev
->func_id
: 0,
853 static int pcmcia_bus_hotplug(struct device
*dev
, char **envp
, int num_envp
,
854 char *buffer
, int buffer_size
)
861 /************************ per-device sysfs output ***************************/
863 #define pcmcia_device_attr(field, test, format) \
864 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
866 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
867 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
870 #define pcmcia_device_stringattr(name, field) \
871 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
873 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
874 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
877 pcmcia_device_attr(func
, socket
, "0x%02x\n");
878 pcmcia_device_attr(func_id
, has_func_id
, "0x%02x\n");
879 pcmcia_device_attr(manf_id
, has_manf_id
, "0x%04x\n");
880 pcmcia_device_attr(card_id
, has_card_id
, "0x%04x\n");
881 pcmcia_device_stringattr(prod_id1
, prod_id
[0]);
882 pcmcia_device_stringattr(prod_id2
, prod_id
[1]);
883 pcmcia_device_stringattr(prod_id3
, prod_id
[2]);
884 pcmcia_device_stringattr(prod_id4
, prod_id
[3]);
887 static ssize_t
pcmcia_store_allow_func_id_match (struct device
* dev
, struct device_attribute
*attr
,
888 const char * buf
, size_t count
)
890 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
894 down(&p_dev
->socket
->skt_sem
);
895 p_dev
->allow_func_id_match
= 1;
896 up(&p_dev
->socket
->skt_sem
);
898 bus_rescan_devices(&pcmcia_bus_type
);
903 static struct device_attribute pcmcia_dev_attrs
[] = {
904 __ATTR(function
, 0444, func_show
, NULL
),
912 __ATTR(allow_func_id_match
, 0200, NULL
, pcmcia_store_allow_func_id_match
),
917 /*======================================================================
919 The card status event handler.
921 ======================================================================*/
923 struct send_event_data
{
924 struct pcmcia_socket
*skt
;
929 static int send_event_callback(struct device
*dev
, void * _data
)
931 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
932 struct send_event_data
*data
= _data
;
934 /* we get called for all sockets, but may only pass the event
935 * for drivers _on the affected socket_ */
936 if (p_dev
->socket
!= data
->skt
)
939 if (p_dev
->client
.state
& (CLIENT_UNBOUND
|CLIENT_STALE
))
942 if (p_dev
->client
.EventMask
& data
->event
)
943 return EVENT(&p_dev
->client
, data
->event
, data
->priority
);
948 static int send_event(struct pcmcia_socket
*s
, event_t event
, int priority
)
951 struct send_event_data
private;
952 struct pcmcia_bus_socket
*skt
= pcmcia_get_bus_socket(s
->pcmcia
);
958 private.event
= event
;
959 private.priority
= priority
;
961 ret
= bus_for_each_dev(&pcmcia_bus_type
, NULL
, &private, send_event_callback
);
963 pcmcia_put_bus_socket(skt
);
968 /* Normally, the event is passed to individual drivers after
969 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
970 * is inversed to maintain historic compatibility.
973 static int ds_event(struct pcmcia_socket
*skt
, event_t event
, int priority
)
975 struct pcmcia_bus_socket
*s
= skt
->pcmcia
;
978 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
983 case CS_EVENT_CARD_REMOVAL
:
984 s
->pcmcia_state
.present
= 0;
985 send_event(skt
, event
, priority
);
987 handle_event(s
, event
);
990 case CS_EVENT_CARD_INSERTION
:
991 s
->pcmcia_state
.present
= 1;
992 pcmcia_card_add(skt
);
993 handle_event(s
, event
);
996 case CS_EVENT_EJECTION_REQUEST
:
997 ret
= send_event(skt
, event
, priority
);
1001 handle_event(s
, event
);
1002 send_event(skt
, event
, priority
);
1011 int pcmcia_register_client(client_handle_t
*handle
, client_reg_t
*req
)
1013 client_t
*client
= NULL
;
1014 struct pcmcia_socket
*s
;
1015 struct pcmcia_bus_socket
*skt
= NULL
;
1016 struct pcmcia_device
*p_dev
= NULL
;
1018 /* Look for unbound client with matching dev_info */
1019 down_read(&pcmcia_socket_list_rwsem
);
1020 list_for_each_entry(s
, &pcmcia_socket_list
, socket_list
) {
1021 unsigned long flags
;
1023 if (s
->state
& SOCKET_CARDBUS
)
1029 skt
= pcmcia_get_bus_socket(skt
);
1032 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
1033 list_for_each_entry(p_dev
, &skt
->devices_list
, socket_device_list
) {
1034 struct pcmcia_driver
*p_drv
;
1035 p_dev
= pcmcia_get_dev(p_dev
);
1038 if (!(p_dev
->client
.state
& CLIENT_UNBOUND
) ||
1039 (!p_dev
->dev
.driver
)) {
1040 pcmcia_put_dev(p_dev
);
1043 p_drv
= to_pcmcia_drv(p_dev
->dev
.driver
);
1044 if (!strncmp(p_drv
->drv
.name
, (char *)req
->dev_info
, DEV_NAME_LEN
)) {
1045 client
= &p_dev
->client
;
1046 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
1049 pcmcia_put_dev(p_dev
);
1051 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
1052 pcmcia_put_bus_socket(skt
);
1055 up_read(&pcmcia_socket_list_rwsem
);
1056 if (!p_dev
|| !client
)
1059 pcmcia_put_bus_socket(skt
); /* safe, as we already hold a reference from bind_device */
1062 client
->state
&= ~CLIENT_UNBOUND
;
1064 client
->EventMask
= req
->EventMask
;
1065 client
->event_handler
= req
->event_handler
;
1066 client
->event_callback_args
= req
->event_callback_args
;
1067 client
->event_callback_args
.client_handle
= client
;
1069 if (s
->state
& SOCKET_CARDBUS
)
1070 client
->state
|= CLIENT_CARDBUS
;
1072 if ((!(s
->state
& SOCKET_CARDBUS
)) && (s
->functions
== 0) &&
1073 (client
->Function
!= BIND_FN_ALL
)) {
1074 cistpl_longlink_mfc_t mfc
;
1075 if (pccard_read_tuple(s
, client
->Function
, CISTPL_LONGLINK_MFC
, &mfc
)
1077 s
->functions
= mfc
.nfn
;
1080 s
->config
= kmalloc(sizeof(config_t
) * s
->functions
,
1083 goto out_no_resource
;
1084 memset(s
->config
, 0, sizeof(config_t
) * s
->functions
);
1087 ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
1088 client
, p_dev
->dev
.bus_id
);
1089 if (client
->EventMask
& CS_EVENT_REGISTRATION_COMPLETE
)
1090 EVENT(client
, CS_EVENT_REGISTRATION_COMPLETE
, CS_EVENT_PRI_LOW
);
1092 if ((s
->state
& (SOCKET_PRESENT
|SOCKET_CARDBUS
)) == SOCKET_PRESENT
) {
1093 if (client
->EventMask
& CS_EVENT_CARD_INSERTION
)
1094 EVENT(client
, CS_EVENT_CARD_INSERTION
, CS_EVENT_PRI_LOW
);
1100 pcmcia_put_dev(p_dev
);
1101 return CS_OUT_OF_RESOURCE
;
1102 } /* register_client */
1103 EXPORT_SYMBOL(pcmcia_register_client
);
1106 /* unbind _all_ devices attached to a given pcmcia_bus_socket. The
1107 * drivers have been called with EVENT_CARD_REMOVAL before.
1109 static int unbind_request(struct pcmcia_bus_socket
*s
)
1111 struct pcmcia_device
*p_dev
;
1112 unsigned long flags
;
1114 ds_dbg(2, "unbind_request(%d)\n", s
->parent
->sock
);
1116 s
->device_count
= 0;
1119 /* unregister all pcmcia_devices registered with this socket*/
1120 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
1121 if (list_empty(&s
->devices_list
)) {
1122 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
1125 p_dev
= list_entry((&s
->devices_list
)->next
, struct pcmcia_device
, socket_device_list
);
1126 list_del(&p_dev
->socket_device_list
);
1127 p_dev
->client
.state
|= CLIENT_STALE
;
1128 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
1130 device_unregister(&p_dev
->dev
);
1134 } /* unbind_request */
1136 int pcmcia_deregister_client(client_handle_t handle
)
1138 struct pcmcia_socket
*s
;
1140 struct pcmcia_device
*p_dev
= handle_to_pdev(handle
);
1142 if (CHECK_HANDLE(handle
))
1143 return CS_BAD_HANDLE
;
1146 ds_dbg(1, "deregister_client(%p)\n", handle
);
1148 if (handle
->state
& (CLIENT_IRQ_REQ
|CLIENT_IO_REQ
|CLIENT_CONFIG_LOCKED
))
1150 for (i
= 0; i
< MAX_WIN
; i
++)
1151 if (handle
->state
& CLIENT_WIN_REQ(i
))
1154 if (handle
->state
& CLIENT_STALE
) {
1155 handle
->client_magic
= 0;
1156 handle
->state
&= ~CLIENT_STALE
;
1157 pcmcia_put_dev(p_dev
);
1159 handle
->state
= CLIENT_UNBOUND
;
1160 handle
->event_handler
= NULL
;
1165 printk(KERN_WARNING
"ds: deregister_client was called too early.\n");
1167 } /* deregister_client */
1168 EXPORT_SYMBOL(pcmcia_deregister_client
);
1170 static struct pcmcia_callback pcmcia_bus_callback
= {
1171 .owner
= THIS_MODULE
,
1173 .requery
= pcmcia_bus_rescan
,
1176 static int __devinit
pcmcia_bus_add_socket(struct class_device
*class_dev
)
1178 struct pcmcia_socket
*socket
= class_get_devdata(class_dev
);
1179 struct pcmcia_bus_socket
*s
;
1182 s
= kmalloc(sizeof(struct pcmcia_bus_socket
), GFP_KERNEL
);
1185 memset(s
, 0, sizeof(struct pcmcia_bus_socket
));
1187 /* get reference to parent socket */
1188 s
->parent
= pcmcia_get_socket(socket
);
1190 printk(KERN_ERR
"PCMCIA obtaining reference to socket %p failed\n", socket
);
1195 kref_init(&s
->refcount
);
1198 * Ugly. But we want to wait for the socket threads to have started up.
1199 * We really should let the drivers themselves drive some of this..
1203 #ifdef CONFIG_PCMCIA_IOCTL
1204 init_waitqueue_head(&s
->queue
);
1206 INIT_LIST_HEAD(&s
->devices_list
);
1207 INIT_WORK(&s
->device_add
, pcmcia_delayed_add_pseudo_device
, s
);
1209 /* Set up hotline to Card Services */
1212 ret
= pccard_register_pcmcia(socket
, &pcmcia_bus_callback
);
1214 printk(KERN_ERR
"PCMCIA registration PCCard core failed for socket %p\n", socket
);
1215 pcmcia_put_bus_socket(s
);
1216 socket
->pcmcia
= NULL
;
1223 static void pcmcia_bus_remove_socket(struct class_device
*class_dev
)
1225 struct pcmcia_socket
*socket
= class_get_devdata(class_dev
);
1227 if (!socket
|| !socket
->pcmcia
)
1230 pccard_register_pcmcia(socket
, NULL
);
1232 socket
->pcmcia
->pcmcia_state
.dead
= 1;
1233 pcmcia_put_bus_socket(socket
->pcmcia
);
1234 socket
->pcmcia
= NULL
;
1240 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1241 static struct class_interface pcmcia_bus_interface
= {
1242 .class = &pcmcia_socket_class
,
1243 .add
= &pcmcia_bus_add_socket
,
1244 .remove
= &pcmcia_bus_remove_socket
,
1248 struct bus_type pcmcia_bus_type
= {
1250 .hotplug
= pcmcia_bus_hotplug
,
1251 .match
= pcmcia_bus_match
,
1252 .dev_attrs
= pcmcia_dev_attrs
,
1256 static int __init
init_pcmcia_bus(void)
1258 spin_lock_init(&pcmcia_dev_list_lock
);
1260 bus_register(&pcmcia_bus_type
);
1261 class_interface_register(&pcmcia_bus_interface
);
1263 pcmcia_setup_ioctl();
1267 fs_initcall(init_pcmcia_bus
); /* one level after subsys_initcall so that
1268 * pcmcia_socket_class is already registered */
1271 static void __exit
exit_pcmcia_bus(void)
1273 pcmcia_cleanup_ioctl();
1275 class_interface_unregister(&pcmcia_bus_interface
);
1277 bus_unregister(&pcmcia_bus_type
);
1279 module_exit(exit_pcmcia_bus
);