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 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
431 CISTPL_MANFID
, &manf_id
)) {
432 p_dev
->manf_id
= manf_id
.manf
;
433 p_dev
->card_id
= manf_id
.card
;
434 p_dev
->has_manf_id
= 1;
435 p_dev
->has_card_id
= 1;
438 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
439 CISTPL_FUNCID
, &func_id
)) {
440 p_dev
->func_id
= func_id
.func
;
441 p_dev
->has_func_id
= 1;
443 /* rule of thumb: cards with no FUNCID, but with
444 * common memory device geometry information, are
445 * probably memory cards (from pcmcia-cs) */
446 cistpl_device_geo_t devgeo
;
447 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
448 CISTPL_DEVICE_GEO
, &devgeo
)) {
449 ds_dbg(0, "mem device geometry probably means "
451 p_dev
->func_id
= CISTPL_FUNCID_MEMORY
;
452 p_dev
->has_func_id
= 1;
456 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
, CISTPL_VERS_1
,
458 for (i
=0; i
< vers1
.ns
; i
++) {
462 tmp
= vers1
.str
+ vers1
.ofs
[i
];
464 length
= strlen(tmp
) + 1;
465 if ((length
< 3) || (length
> 255))
468 p_dev
->prod_id
[i
] = kmalloc(sizeof(char) * length
,
470 if (!p_dev
->prod_id
[i
])
473 p_dev
->prod_id
[i
] = strncpy(p_dev
->prod_id
[i
],
482 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
483 * Serializes pcmcia_device_add; will most likely be removed in future.
485 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
486 * won't work, this doesn't matter much at the moment: the driver core doesn't
489 static DECLARE_MUTEX(device_add_lock
);
491 struct pcmcia_device
* pcmcia_device_add(struct pcmcia_socket
*s
, unsigned int function
)
493 struct pcmcia_device
*p_dev
;
496 s
= pcmcia_get_socket(s
);
500 down(&device_add_lock
);
502 /* max of 2 devices per card */
503 if (s
->device_count
== 2)
506 p_dev
= kmalloc(sizeof(struct pcmcia_device
), GFP_KERNEL
);
509 memset(p_dev
, 0, sizeof(struct pcmcia_device
));
512 p_dev
->device_no
= (s
->device_count
++);
513 p_dev
->func
= function
;
515 p_dev
->dev
.bus
= &pcmcia_bus_type
;
516 p_dev
->dev
.parent
= s
->dev
.dev
;
517 p_dev
->dev
.release
= pcmcia_release_dev
;
518 sprintf (p_dev
->dev
.bus_id
, "%d.%d", p_dev
->socket
->sock
, p_dev
->device_no
);
521 p_dev
->state
= CLIENT_UNBOUND
;
523 /* Add to the list in pcmcia_bus_socket */
524 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
525 list_add_tail(&p_dev
->socket_device_list
, &s
->devices_list
);
526 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
528 pcmcia_device_query(p_dev
);
530 if (device_register(&p_dev
->dev
)) {
531 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
532 list_del(&p_dev
->socket_device_list
);
533 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
538 up(&device_add_lock
);
546 up(&device_add_lock
);
547 pcmcia_put_socket(s
);
553 static int pcmcia_card_add(struct pcmcia_socket
*s
)
556 cistpl_longlink_mfc_t mfc
;
557 unsigned int no_funcs
, i
;
560 if (!(s
->resource_setup_done
))
561 return -EAGAIN
; /* try again, but later... */
563 pcmcia_validate_mem(s
);
564 ret
= pccard_validate_cis(s
, BIND_FN_ALL
, &cisinfo
);
565 if (ret
|| !cisinfo
.Chains
) {
566 ds_dbg(0, "invalid CIS or invalid resources\n");
570 if (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_LONGLINK_MFC
, &mfc
))
575 for (i
=0; i
< no_funcs
; i
++)
576 pcmcia_device_add(s
, i
);
582 static void pcmcia_delayed_add_pseudo_device(void *data
)
584 struct pcmcia_socket
*s
= data
;
585 pcmcia_device_add(s
, 0);
586 s
->pcmcia_state
.device_add_pending
= 0;
589 static inline void pcmcia_add_pseudo_device(struct pcmcia_socket
*s
)
591 if (!s
->pcmcia_state
.device_add_pending
) {
592 s
->pcmcia_state
.device_add_pending
= 1;
593 schedule_work(&s
->device_add
);
598 static int pcmcia_requery(struct device
*dev
, void * _data
)
600 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
601 if (!p_dev
->dev
.driver
)
602 pcmcia_device_query(p_dev
);
607 static void pcmcia_bus_rescan(struct pcmcia_socket
*skt
)
612 /* must be called with skt_sem held */
613 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
614 if (list_empty(&skt
->devices_list
))
616 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
618 /* if no devices were added for this socket yet because of
619 * missing resource information or other trouble, we need to
622 int ret
= pcmcia_card_add(skt
);
627 /* some device information might have changed because of a CIS
628 * update or because we can finally read it correctly... so
629 * determine it again, overwriting old values if necessary. */
630 bus_for_each_dev(&pcmcia_bus_type
, NULL
, NULL
, pcmcia_requery
);
632 /* we re-scan all devices, not just the ones connected to this
633 * socket. This does not matter, though. */
634 bus_rescan_devices(&pcmcia_bus_type
);
637 static inline int pcmcia_devmatch(struct pcmcia_device
*dev
,
638 struct pcmcia_device_id
*did
)
640 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_MANF_ID
) {
641 if ((!dev
->has_manf_id
) || (dev
->manf_id
!= did
->manf_id
))
645 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_CARD_ID
) {
646 if ((!dev
->has_card_id
) || (dev
->card_id
!= did
->card_id
))
650 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FUNCTION
) {
651 if (dev
->func
!= did
->function
)
655 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID1
) {
656 if (!dev
->prod_id
[0])
658 if (strcmp(did
->prod_id
[0], dev
->prod_id
[0]))
662 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID2
) {
663 if (!dev
->prod_id
[1])
665 if (strcmp(did
->prod_id
[1], dev
->prod_id
[1]))
669 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID3
) {
670 if (!dev
->prod_id
[2])
672 if (strcmp(did
->prod_id
[2], dev
->prod_id
[2]))
676 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID4
) {
677 if (!dev
->prod_id
[3])
679 if (strcmp(did
->prod_id
[3], dev
->prod_id
[3]))
683 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_DEVICE_NO
) {
684 /* handle pseudo multifunction devices:
685 * there are at most two pseudo multifunction devices.
686 * if we're matching against the first, schedule a
687 * call which will then check whether there are two
688 * pseudo devices, and if not, add the second one.
690 if (dev
->device_no
== 0)
691 pcmcia_add_pseudo_device(dev
->socket
);
693 if (dev
->device_no
!= did
->device_no
)
697 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FUNC_ID
) {
698 if ((!dev
->has_func_id
) || (dev
->func_id
!= did
->func_id
))
701 /* if this is a pseudo-multi-function device,
702 * we need explicit matches */
703 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_DEVICE_NO
)
708 /* also, FUNC_ID matching needs to be activated by userspace
709 * after it has re-checked that there is no possible module
710 * with a prod_id/manf_id/card_id match.
712 if (!dev
->allow_func_id_match
)
716 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FAKE_CIS
) {
717 if (!dev
->socket
->fake_cis
)
718 pcmcia_load_firmware(dev
, did
->cisfile
);
720 if (!dev
->socket
->fake_cis
)
724 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_ANONYMOUS
) {
729 if (dev
->has_manf_id
|| dev
->has_card_id
|| dev
->has_func_id
)
733 dev
->dev
.driver_data
= (void *) did
;
739 static int pcmcia_bus_match(struct device
* dev
, struct device_driver
* drv
) {
740 struct pcmcia_device
* p_dev
= to_pcmcia_dev(dev
);
741 struct pcmcia_driver
* p_drv
= to_pcmcia_drv(drv
);
742 struct pcmcia_device_id
*did
= p_drv
->id_table
;
744 /* matching by cardmgr */
745 if (p_dev
->cardmgr
== p_drv
)
748 while (did
&& did
->match_flags
) {
749 if (pcmcia_devmatch(p_dev
, did
))
757 #ifdef CONFIG_HOTPLUG
759 static int pcmcia_bus_hotplug(struct device
*dev
, char **envp
, int num_envp
,
760 char *buffer
, int buffer_size
)
762 struct pcmcia_device
*p_dev
;
764 u32 hash
[4] = { 0, 0, 0, 0};
769 p_dev
= to_pcmcia_dev(dev
);
771 /* calculate hashes */
772 for (i
=0; i
<4; i
++) {
773 if (!p_dev
->prod_id
[i
])
775 hash
[i
] = crc32(0, p_dev
->prod_id
[i
], strlen(p_dev
->prod_id
[i
]));
780 if (add_hotplug_env_var(envp
, num_envp
, &i
,
781 buffer
, buffer_size
, &length
,
783 p_dev
->socket
->sock
))
786 if (add_hotplug_env_var(envp
, num_envp
, &i
,
787 buffer
, buffer_size
, &length
,
792 if (add_hotplug_env_var(envp
, num_envp
, &i
,
793 buffer
, buffer_size
, &length
,
794 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
795 "pa%08Xpb%08Xpc%08Xpd%08X",
796 p_dev
->has_manf_id
? p_dev
->manf_id
: 0,
797 p_dev
->has_card_id
? p_dev
->card_id
: 0,
798 p_dev
->has_func_id
? p_dev
->func_id
: 0,
814 static int pcmcia_bus_hotplug(struct device
*dev
, char **envp
, int num_envp
,
815 char *buffer
, int buffer_size
)
822 /************************ per-device sysfs output ***************************/
824 #define pcmcia_device_attr(field, test, format) \
825 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
827 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
828 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
831 #define pcmcia_device_stringattr(name, field) \
832 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
834 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
835 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
838 pcmcia_device_attr(func
, socket
, "0x%02x\n");
839 pcmcia_device_attr(func_id
, has_func_id
, "0x%02x\n");
840 pcmcia_device_attr(manf_id
, has_manf_id
, "0x%04x\n");
841 pcmcia_device_attr(card_id
, has_card_id
, "0x%04x\n");
842 pcmcia_device_stringattr(prod_id1
, prod_id
[0]);
843 pcmcia_device_stringattr(prod_id2
, prod_id
[1]);
844 pcmcia_device_stringattr(prod_id3
, prod_id
[2]);
845 pcmcia_device_stringattr(prod_id4
, prod_id
[3]);
847 static ssize_t
modalias_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
849 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
851 u32 hash
[4] = { 0, 0, 0, 0};
853 /* calculate hashes */
854 for (i
=0; i
<4; i
++) {
855 if (!p_dev
->prod_id
[i
])
857 hash
[i
] = crc32(0,p_dev
->prod_id
[i
],strlen(p_dev
->prod_id
[i
]));
859 return sprintf(buf
, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
860 "pa%08Xpb%08Xpc%08Xpd%08X\n",
861 p_dev
->has_manf_id
? p_dev
->manf_id
: 0,
862 p_dev
->has_card_id
? p_dev
->card_id
: 0,
863 p_dev
->has_func_id
? p_dev
->func_id
: 0,
864 p_dev
->func
, p_dev
->device_no
,
865 hash
[0], hash
[1], hash
[2], hash
[3]);
868 static ssize_t
pcmcia_store_allow_func_id_match(struct device
*dev
,
869 struct device_attribute
*attr
, const char *buf
, size_t count
)
871 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
875 down(&p_dev
->socket
->skt_sem
);
876 p_dev
->allow_func_id_match
= 1;
877 up(&p_dev
->socket
->skt_sem
);
879 bus_rescan_devices(&pcmcia_bus_type
);
884 static struct device_attribute pcmcia_dev_attrs
[] = {
885 __ATTR(function
, 0444, func_show
, NULL
),
894 __ATTR(allow_func_id_match
, 0200, NULL
, pcmcia_store_allow_func_id_match
),
899 /*======================================================================
901 The card status event handler.
903 ======================================================================*/
905 struct send_event_data
{
906 struct pcmcia_socket
*skt
;
911 static int send_event_callback(struct device
*dev
, void * _data
)
913 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
914 struct pcmcia_driver
*p_drv
;
915 struct send_event_data
*data
= _data
;
917 /* we get called for all sockets, but may only pass the event
918 * for drivers _on the affected socket_ */
919 if (p_dev
->socket
!= data
->skt
)
922 p_drv
= to_pcmcia_drv(p_dev
->dev
.driver
);
926 if (p_dev
->state
& (CLIENT_UNBOUND
|CLIENT_STALE
))
930 return p_drv
->event(data
->event
, data
->priority
,
931 &p_dev
->event_callback_args
);
936 static int send_event(struct pcmcia_socket
*s
, event_t event
, int priority
)
938 struct send_event_data
private;
941 private.event
= event
;
942 private.priority
= priority
;
944 return bus_for_each_dev(&pcmcia_bus_type
, NULL
, &private, send_event_callback
);
948 /* Normally, the event is passed to individual drivers after
949 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
950 * is inversed to maintain historic compatibility.
953 static int ds_event(struct pcmcia_socket
*skt
, event_t event
, int priority
)
955 struct pcmcia_socket
*s
= pcmcia_get_socket(skt
);
958 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
959 event
, priority
, skt
);
963 case CS_EVENT_CARD_REMOVAL
:
964 s
->pcmcia_state
.present
= 0;
965 send_event(skt
, event
, priority
);
967 handle_event(skt
, event
);
970 case CS_EVENT_CARD_INSERTION
:
971 s
->pcmcia_state
.present
= 1;
972 pcmcia_card_add(skt
);
973 handle_event(skt
, event
);
976 case CS_EVENT_EJECTION_REQUEST
:
977 ret
= send_event(skt
, event
, priority
);
981 handle_event(skt
, event
);
982 send_event(skt
, event
, priority
);
986 pcmcia_put_socket(s
);
993 int pcmcia_register_client(struct pcmcia_device
**handle
, client_reg_t
*req
)
995 struct pcmcia_socket
*s
= NULL
;
996 struct pcmcia_device
*p_dev
= NULL
;
997 struct pcmcia_driver
*p_drv
= NULL
;
999 /* Look for unbound client with matching dev_info */
1000 down_read(&pcmcia_socket_list_rwsem
);
1001 list_for_each_entry(s
, &pcmcia_socket_list
, socket_list
) {
1002 unsigned long flags
;
1004 if (s
->state
& SOCKET_CARDBUS
)
1007 s
= pcmcia_get_socket(s
);
1010 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
1011 list_for_each_entry(p_dev
, &s
->devices_list
, socket_device_list
) {
1012 p_dev
= pcmcia_get_dev(p_dev
);
1015 if (!(p_dev
->state
& CLIENT_UNBOUND
) ||
1016 (!p_dev
->dev
.driver
)) {
1017 pcmcia_put_dev(p_dev
);
1020 p_drv
= to_pcmcia_drv(p_dev
->dev
.driver
);
1021 if (!strncmp(p_drv
->drv
.name
, (char *)req
->dev_info
, DEV_NAME_LEN
)) {
1022 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
1025 pcmcia_put_dev(p_dev
);
1027 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
1028 pcmcia_put_socket(s
);
1031 up_read(&pcmcia_socket_list_rwsem
);
1035 pcmcia_put_socket(s
); /* safe, as we already hold a reference from bind_device */
1038 p_dev
->state
&= ~CLIENT_UNBOUND
;
1039 p_dev
->event_callback_args
= req
->event_callback_args
;
1040 p_dev
->event_callback_args
.client_handle
= p_dev
;
1043 if (!s
->functions
) {
1044 cistpl_longlink_mfc_t mfc
;
1045 if (pccard_read_tuple(s
, p_dev
->func
, CISTPL_LONGLINK_MFC
, &mfc
)
1047 s
->functions
= mfc
.nfn
;
1050 s
->config
= kmalloc(sizeof(config_t
) * s
->functions
,
1053 goto out_no_resource
;
1054 memset(s
->config
, 0, sizeof(config_t
) * s
->functions
);
1057 ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
1058 p_dev
, p_dev
->dev
.bus_id
);
1060 if ((s
->state
& (SOCKET_PRESENT
|SOCKET_CARDBUS
)) == SOCKET_PRESENT
) {
1062 p_drv
->event(CS_EVENT_CARD_INSERTION
, CS_EVENT_PRI_LOW
,
1063 &p_dev
->event_callback_args
);
1070 pcmcia_put_dev(p_dev
);
1071 return CS_OUT_OF_RESOURCE
;
1072 } /* register_client */
1073 EXPORT_SYMBOL(pcmcia_register_client
);
1076 /* unbind _all_ devices attached to a given pcmcia_bus_socket. The
1077 * drivers have been called with EVENT_CARD_REMOVAL before.
1079 static int unbind_request(struct pcmcia_socket
*s
)
1081 struct pcmcia_device
*p_dev
;
1082 unsigned long flags
;
1084 ds_dbg(2, "unbind_request(%d)\n", s
->sock
);
1086 s
->device_count
= 0;
1089 /* unregister all pcmcia_devices registered with this socket*/
1090 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
1091 if (list_empty(&s
->devices_list
)) {
1092 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
1095 p_dev
= list_entry((&s
->devices_list
)->next
, struct pcmcia_device
, socket_device_list
);
1096 list_del(&p_dev
->socket_device_list
);
1097 p_dev
->state
|= CLIENT_STALE
;
1098 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
1100 device_unregister(&p_dev
->dev
);
1104 } /* unbind_request */
1106 int pcmcia_deregister_client(struct pcmcia_device
*p_dev
)
1108 struct pcmcia_socket
*s
;
1112 ds_dbg(1, "deregister_client(%p)\n", p_dev
);
1114 if (p_dev
->state
& (CLIENT_IRQ_REQ
|CLIENT_IO_REQ
|CLIENT_CONFIG_LOCKED
))
1116 for (i
= 0; i
< MAX_WIN
; i
++)
1117 if (p_dev
->state
& CLIENT_WIN_REQ(i
))
1120 if (p_dev
->state
& CLIENT_STALE
) {
1121 p_dev
->state
&= ~CLIENT_STALE
;
1122 pcmcia_put_dev(p_dev
);
1124 p_dev
->state
= CLIENT_UNBOUND
;
1129 printk(KERN_WARNING
"ds: deregister_client was called too early.\n");
1131 } /* deregister_client */
1132 EXPORT_SYMBOL(pcmcia_deregister_client
);
1134 static struct pcmcia_callback pcmcia_bus_callback
= {
1135 .owner
= THIS_MODULE
,
1137 .requery
= pcmcia_bus_rescan
,
1140 static int __devinit
pcmcia_bus_add_socket(struct class_device
*class_dev
)
1142 struct pcmcia_socket
*socket
= class_get_devdata(class_dev
);
1145 socket
= pcmcia_get_socket(socket
);
1147 printk(KERN_ERR
"PCMCIA obtaining reference to socket %p failed\n", socket
);
1152 * Ugly. But we want to wait for the socket threads to have started up.
1153 * We really should let the drivers themselves drive some of this..
1157 #ifdef CONFIG_PCMCIA_IOCTL
1158 init_waitqueue_head(&socket
->queue
);
1160 INIT_LIST_HEAD(&socket
->devices_list
);
1161 INIT_WORK(&socket
->device_add
, pcmcia_delayed_add_pseudo_device
, socket
);
1162 memset(&socket
->pcmcia_state
, 0, sizeof(u8
));
1163 socket
->device_count
= 0;
1165 ret
= pccard_register_pcmcia(socket
, &pcmcia_bus_callback
);
1167 printk(KERN_ERR
"PCMCIA registration PCCard core failed for socket %p\n", socket
);
1168 pcmcia_put_socket(socket
);
1175 static void pcmcia_bus_remove_socket(struct class_device
*class_dev
)
1177 struct pcmcia_socket
*socket
= class_get_devdata(class_dev
);
1182 socket
->pcmcia_state
.dead
= 1;
1183 pccard_register_pcmcia(socket
, NULL
);
1185 pcmcia_put_socket(socket
);
1191 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1192 static struct class_interface pcmcia_bus_interface
= {
1193 .class = &pcmcia_socket_class
,
1194 .add
= &pcmcia_bus_add_socket
,
1195 .remove
= &pcmcia_bus_remove_socket
,
1199 struct bus_type pcmcia_bus_type
= {
1201 .hotplug
= pcmcia_bus_hotplug
,
1202 .match
= pcmcia_bus_match
,
1203 .dev_attrs
= pcmcia_dev_attrs
,
1207 static int __init
init_pcmcia_bus(void)
1209 spin_lock_init(&pcmcia_dev_list_lock
);
1211 bus_register(&pcmcia_bus_type
);
1212 class_interface_register(&pcmcia_bus_interface
);
1214 pcmcia_setup_ioctl();
1218 fs_initcall(init_pcmcia_bus
); /* one level after subsys_initcall so that
1219 * pcmcia_socket_class is already registered */
1222 static void __exit
exit_pcmcia_bus(void)
1224 pcmcia_cleanup_ioctl();
1226 class_interface_unregister(&pcmcia_bus_interface
);
1228 bus_unregister(&pcmcia_bus_type
);
1230 module_exit(exit_pcmcia_bus
);