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 - 2006 Dominik Brodowski
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/errno.h>
20 #include <linux/list.h>
21 #include <linux/delay.h>
22 #include <linux/workqueue.h>
23 #include <linux/crc32.h>
24 #include <linux/firmware.h>
25 #include <linux/kref.h>
26 #include <linux/dma-mapping.h>
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 /*====================================================================*/
62 /* code which was in cs.c before */
64 /* String tables for error messages */
66 typedef struct lookup_t
{
71 static const lookup_t error_table
[] = {
72 { CS_SUCCESS
, "Operation succeeded" },
73 { CS_BAD_ADAPTER
, "Bad adapter" },
74 { CS_BAD_ATTRIBUTE
, "Bad attribute", },
75 { CS_BAD_BASE
, "Bad base address" },
76 { CS_BAD_EDC
, "Bad EDC" },
77 { CS_BAD_IRQ
, "Bad IRQ" },
78 { CS_BAD_OFFSET
, "Bad offset" },
79 { CS_BAD_PAGE
, "Bad page number" },
80 { CS_READ_FAILURE
, "Read failure" },
81 { CS_BAD_SIZE
, "Bad size" },
82 { CS_BAD_SOCKET
, "Bad socket" },
83 { CS_BAD_TYPE
, "Bad type" },
84 { CS_BAD_VCC
, "Bad Vcc" },
85 { CS_BAD_VPP
, "Bad Vpp" },
86 { CS_BAD_WINDOW
, "Bad window" },
87 { CS_WRITE_FAILURE
, "Write failure" },
88 { CS_NO_CARD
, "No card present" },
89 { CS_UNSUPPORTED_FUNCTION
, "Usupported function" },
90 { CS_UNSUPPORTED_MODE
, "Unsupported mode" },
91 { CS_BAD_SPEED
, "Bad speed" },
92 { CS_BUSY
, "Resource busy" },
93 { CS_GENERAL_FAILURE
, "General failure" },
94 { CS_WRITE_PROTECTED
, "Write protected" },
95 { CS_BAD_ARG_LENGTH
, "Bad argument length" },
96 { CS_BAD_ARGS
, "Bad arguments" },
97 { CS_CONFIGURATION_LOCKED
, "Configuration locked" },
98 { CS_IN_USE
, "Resource in use" },
99 { CS_NO_MORE_ITEMS
, "No more items" },
100 { CS_OUT_OF_RESOURCE
, "Out of resource" },
101 { CS_BAD_HANDLE
, "Bad handle" },
102 { CS_BAD_TUPLE
, "Bad CIS tuple" }
106 static const lookup_t service_table
[] = {
107 { AccessConfigurationRegister
, "AccessConfigurationRegister" },
108 { AddSocketServices
, "AddSocketServices" },
109 { AdjustResourceInfo
, "AdjustResourceInfo" },
110 { CheckEraseQueue
, "CheckEraseQueue" },
111 { CloseMemory
, "CloseMemory" },
112 { DeregisterClient
, "DeregisterClient" },
113 { DeregisterEraseQueue
, "DeregisterEraseQueue" },
114 { GetCardServicesInfo
, "GetCardServicesInfo" },
115 { GetClientInfo
, "GetClientInfo" },
116 { GetConfigurationInfo
, "GetConfigurationInfo" },
117 { GetEventMask
, "GetEventMask" },
118 { GetFirstClient
, "GetFirstClient" },
119 { GetFirstRegion
, "GetFirstRegion" },
120 { GetFirstTuple
, "GetFirstTuple" },
121 { GetNextClient
, "GetNextClient" },
122 { GetNextRegion
, "GetNextRegion" },
123 { GetNextTuple
, "GetNextTuple" },
124 { GetStatus
, "GetStatus" },
125 { GetTupleData
, "GetTupleData" },
126 { MapMemPage
, "MapMemPage" },
127 { ModifyConfiguration
, "ModifyConfiguration" },
128 { ModifyWindow
, "ModifyWindow" },
129 { OpenMemory
, "OpenMemory" },
130 { ParseTuple
, "ParseTuple" },
131 { ReadMemory
, "ReadMemory" },
132 { RegisterClient
, "RegisterClient" },
133 { RegisterEraseQueue
, "RegisterEraseQueue" },
134 { RegisterMTD
, "RegisterMTD" },
135 { ReleaseConfiguration
, "ReleaseConfiguration" },
136 { ReleaseIO
, "ReleaseIO" },
137 { ReleaseIRQ
, "ReleaseIRQ" },
138 { ReleaseWindow
, "ReleaseWindow" },
139 { RequestConfiguration
, "RequestConfiguration" },
140 { RequestIO
, "RequestIO" },
141 { RequestIRQ
, "RequestIRQ" },
142 { RequestSocketMask
, "RequestSocketMask" },
143 { RequestWindow
, "RequestWindow" },
144 { ResetCard
, "ResetCard" },
145 { SetEventMask
, "SetEventMask" },
146 { ValidateCIS
, "ValidateCIS" },
147 { WriteMemory
, "WriteMemory" },
148 { BindDevice
, "BindDevice" },
149 { BindMTD
, "BindMTD" },
150 { ReportError
, "ReportError" },
151 { SuspendCard
, "SuspendCard" },
152 { ResumeCard
, "ResumeCard" },
153 { EjectCard
, "EjectCard" },
154 { InsertCard
, "InsertCard" },
155 { ReplaceCIS
, "ReplaceCIS" }
159 static int pcmcia_report_error(struct pcmcia_device
*p_dev
, error_info_t
*err
)
167 printk(KERN_NOTICE
"%s: ", p_dev
->dev
.bus_id
);
169 for (i
= 0; i
< ARRAY_SIZE(service_table
); i
++)
170 if (service_table
[i
].key
== err
->func
)
172 if (i
< ARRAY_SIZE(service_table
))
173 serv
= service_table
[i
].msg
;
175 serv
= "Unknown service number";
177 for (i
= 0; i
< ARRAY_SIZE(error_table
); i
++)
178 if (error_table
[i
].key
== err
->retcode
)
180 if (i
< ARRAY_SIZE(error_table
))
181 printk("%s: %s\n", serv
, error_table
[i
].msg
);
183 printk("%s: Unknown error code %#x\n", serv
, err
->retcode
);
188 /* end of code which was in cs.c before */
190 /*======================================================================*/
192 void cs_error(struct pcmcia_device
*p_dev
, int func
, int ret
)
194 error_info_t err
= { func
, ret
};
195 pcmcia_report_error(p_dev
, &err
);
197 EXPORT_SYMBOL(cs_error
);
200 static void pcmcia_check_driver(struct pcmcia_driver
*p_drv
)
202 struct pcmcia_device_id
*did
= p_drv
->id_table
;
206 if (!p_drv
->probe
|| !p_drv
->remove
)
207 printk(KERN_DEBUG
"pcmcia: %s lacks a requisite callback "
208 "function\n", p_drv
->drv
.name
);
210 while (did
&& did
->match_flags
) {
211 for (i
=0; i
<4; i
++) {
212 if (!did
->prod_id
[i
])
215 hash
= crc32(0, did
->prod_id
[i
], strlen(did
->prod_id
[i
]));
216 if (hash
== did
->prod_id_hash
[i
])
219 printk(KERN_DEBUG
"pcmcia: %s: invalid hash for "
220 "product string \"%s\": is 0x%x, should "
221 "be 0x%x\n", p_drv
->drv
.name
, did
->prod_id
[i
],
222 did
->prod_id_hash
[i
], hash
);
223 printk(KERN_DEBUG
"pcmcia: see "
224 "Documentation/pcmcia/devicetable.txt for "
234 /*======================================================================*/
237 struct pcmcia_dynid
{
238 struct list_head node
;
239 struct pcmcia_device_id id
;
243 * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices
244 * @driver: target device driver
245 * @buf: buffer for scanning device ID data
248 * Adds a new dynamic PCMCIA device ID to this driver,
249 * and causes the driver to probe for all devices again.
252 pcmcia_store_new_id(struct device_driver
*driver
, const char *buf
, size_t count
)
254 struct pcmcia_dynid
*dynid
;
255 struct pcmcia_driver
*pdrv
= to_pcmcia_drv(driver
);
256 __u16 match_flags
, manf_id
, card_id
;
257 __u8 func_id
, function
, device_no
;
258 __u32 prod_id_hash
[4] = {0, 0, 0, 0};
262 fields
= sscanf(buf
, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
263 &match_flags
, &manf_id
, &card_id
, &func_id
, &function
, &device_no
,
264 &prod_id_hash
[0], &prod_id_hash
[1], &prod_id_hash
[2], &prod_id_hash
[3]);
268 dynid
= kzalloc(sizeof(struct pcmcia_dynid
), GFP_KERNEL
);
272 INIT_LIST_HEAD(&dynid
->node
);
273 dynid
->id
.match_flags
= match_flags
;
274 dynid
->id
.manf_id
= manf_id
;
275 dynid
->id
.card_id
= card_id
;
276 dynid
->id
.func_id
= func_id
;
277 dynid
->id
.function
= function
;
278 dynid
->id
.device_no
= device_no
;
279 memcpy(dynid
->id
.prod_id_hash
, prod_id_hash
, sizeof(__u32
) * 4);
281 spin_lock(&pdrv
->dynids
.lock
);
282 list_add_tail(&pdrv
->dynids
.list
, &dynid
->node
);
283 spin_unlock(&pdrv
->dynids
.lock
);
285 if (get_driver(&pdrv
->drv
)) {
286 retval
= driver_attach(&pdrv
->drv
);
287 put_driver(&pdrv
->drv
);
294 static DRIVER_ATTR(new_id
, S_IWUSR
, NULL
, pcmcia_store_new_id
);
297 pcmcia_free_dynids(struct pcmcia_driver
*drv
)
299 struct pcmcia_dynid
*dynid
, *n
;
301 spin_lock(&drv
->dynids
.lock
);
302 list_for_each_entry_safe(dynid
, n
, &drv
->dynids
.list
, node
) {
303 list_del(&dynid
->node
);
306 spin_unlock(&drv
->dynids
.lock
);
310 pcmcia_create_newid_file(struct pcmcia_driver
*drv
)
313 if (drv
->probe
!= NULL
)
314 error
= driver_create_file(&drv
->drv
, &driver_attr_new_id
);
320 * pcmcia_register_driver - register a PCMCIA driver with the bus core
321 * @driver: the &driver being registered
323 * Registers a PCMCIA driver with the PCMCIA bus core.
325 int pcmcia_register_driver(struct pcmcia_driver
*driver
)
332 pcmcia_check_driver(driver
);
334 /* initialize common fields */
335 driver
->drv
.bus
= &pcmcia_bus_type
;
336 driver
->drv
.owner
= driver
->owner
;
337 spin_lock_init(&driver
->dynids
.lock
);
338 INIT_LIST_HEAD(&driver
->dynids
.list
);
340 ds_dbg(3, "registering driver %s\n", driver
->drv
.name
);
342 error
= driver_register(&driver
->drv
);
346 error
= pcmcia_create_newid_file(driver
);
348 driver_unregister(&driver
->drv
);
352 EXPORT_SYMBOL(pcmcia_register_driver
);
355 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
356 * @driver: the &driver being unregistered
358 void pcmcia_unregister_driver(struct pcmcia_driver
*driver
)
360 ds_dbg(3, "unregistering driver %s\n", driver
->drv
.name
);
361 driver_unregister(&driver
->drv
);
362 pcmcia_free_dynids(driver
);
364 EXPORT_SYMBOL(pcmcia_unregister_driver
);
367 /* pcmcia_device handling */
369 struct pcmcia_device
* pcmcia_get_dev(struct pcmcia_device
*p_dev
)
371 struct device
*tmp_dev
;
372 tmp_dev
= get_device(&p_dev
->dev
);
375 return to_pcmcia_dev(tmp_dev
);
378 void pcmcia_put_dev(struct pcmcia_device
*p_dev
)
381 put_device(&p_dev
->dev
);
384 static void pcmcia_release_function(struct kref
*ref
)
386 struct config_t
*c
= container_of(ref
, struct config_t
, ref
);
387 ds_dbg(1, "releasing config_t\n");
391 static void pcmcia_release_dev(struct device
*dev
)
393 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
394 ds_dbg(1, "releasing device %s\n", p_dev
->dev
.bus_id
);
395 pcmcia_put_socket(p_dev
->socket
);
396 kfree(p_dev
->devname
);
397 kref_put(&p_dev
->function_config
->ref
, pcmcia_release_function
);
401 static void pcmcia_add_device_later(struct pcmcia_socket
*s
, int mfc
)
403 if (!s
->pcmcia_state
.device_add_pending
) {
404 ds_dbg(1, "scheduling to add %s secondary"
405 " device to %d\n", mfc
? "mfc" : "pfc", s
->sock
);
406 s
->pcmcia_state
.device_add_pending
= 1;
407 s
->pcmcia_state
.mfc_pfc
= mfc
;
408 schedule_work(&s
->device_add
);
413 static int pcmcia_device_probe(struct device
* dev
)
415 struct pcmcia_device
*p_dev
;
416 struct pcmcia_driver
*p_drv
;
417 struct pcmcia_device_id
*did
;
418 struct pcmcia_socket
*s
;
419 cistpl_config_t cis_config
;
422 dev
= get_device(dev
);
426 p_dev
= to_pcmcia_dev(dev
);
427 p_drv
= to_pcmcia_drv(dev
->driver
);
430 /* The PCMCIA code passes the match data in via dev->driver_data
431 * which is an ugly hack. Once the driver probe is called it may
432 * and often will overwrite the match data so we must save it first
434 * handle pseudo multifunction devices:
435 * there are at most two pseudo multifunction devices.
436 * if we're matching against the first, schedule a
437 * call which will then check whether there are two
438 * pseudo devices, and if not, add the second one.
440 did
= p_dev
->dev
.driver_data
;
442 ds_dbg(1, "trying to bind %s to %s\n", p_dev
->dev
.bus_id
,
445 if ((!p_drv
->probe
) || (!p_dev
->function_config
) ||
446 (!try_module_get(p_drv
->owner
))) {
451 /* set up some more device information */
452 ret
= pccard_read_tuple(p_dev
->socket
, p_dev
->func
, CISTPL_CONFIG
,
455 p_dev
->conf
.ConfigBase
= cis_config
.base
;
456 p_dev
->conf
.Present
= cis_config
.rmask
[0];
458 printk(KERN_INFO
"pcmcia: could not parse base and rmask0 of CIS\n");
459 p_dev
->conf
.ConfigBase
= 0;
460 p_dev
->conf
.Present
= 0;
463 ret
= p_drv
->probe(p_dev
);
465 ds_dbg(1, "binding %s to %s failed with %d\n",
466 p_dev
->dev
.bus_id
, p_drv
->drv
.name
, ret
);
470 if (did
&& (did
->match_flags
& PCMCIA_DEV_ID_MATCH_DEVICE_NO
) &&
471 (p_dev
->socket
->device_count
== 1) && (p_dev
->device_no
== 0))
472 pcmcia_add_device_later(p_dev
->socket
, 0);
476 module_put(p_drv
->owner
);
485 * Removes a PCMCIA card from the device tree and socket list.
487 static void pcmcia_card_remove(struct pcmcia_socket
*s
, struct pcmcia_device
*leftover
)
489 struct pcmcia_device
*p_dev
;
490 struct pcmcia_device
*tmp
;
493 ds_dbg(2, "pcmcia_card_remove(%d) %s\n", s
->sock
,
494 leftover
? leftover
->devname
: "");
501 /* unregister all pcmcia_devices registered with this socket, except leftover */
502 list_for_each_entry_safe(p_dev
, tmp
, &s
->devices_list
, socket_device_list
) {
503 if (p_dev
== leftover
)
506 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
507 list_del(&p_dev
->socket_device_list
);
509 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
511 ds_dbg(2, "unregistering device %s\n", p_dev
->dev
.bus_id
);
512 device_unregister(&p_dev
->dev
);
518 static int pcmcia_device_remove(struct device
* dev
)
520 struct pcmcia_device
*p_dev
;
521 struct pcmcia_driver
*p_drv
;
522 struct pcmcia_device_id
*did
;
525 p_dev
= to_pcmcia_dev(dev
);
526 p_drv
= to_pcmcia_drv(dev
->driver
);
528 ds_dbg(1, "removing device %s\n", p_dev
->dev
.bus_id
);
530 /* If we're removing the primary module driving a
531 * pseudo multi-function card, we need to unbind
534 did
= p_dev
->dev
.driver_data
;
535 if (did
&& (did
->match_flags
& PCMCIA_DEV_ID_MATCH_DEVICE_NO
) &&
536 (p_dev
->socket
->device_count
!= 0) &&
537 (p_dev
->device_no
== 0))
538 pcmcia_card_remove(p_dev
->socket
, p_dev
);
540 /* detach the "instance" */
545 p_drv
->remove(p_dev
);
547 p_dev
->dev_node
= NULL
;
549 /* check for proper unloading */
550 if (p_dev
->_irq
|| p_dev
->_io
|| p_dev
->_locked
)
551 printk(KERN_INFO
"pcmcia: driver %s did not release config properly\n",
554 for (i
= 0; i
< MAX_WIN
; i
++)
555 if (p_dev
->_win
& CLIENT_WIN_REQ(i
))
556 printk(KERN_INFO
"pcmcia: driver %s did not release windows properly\n",
559 /* references from pcmcia_probe_device */
560 pcmcia_put_dev(p_dev
);
561 module_put(p_drv
->owner
);
568 * pcmcia_device_query -- determine information about a pcmcia device
570 static int pcmcia_device_query(struct pcmcia_device
*p_dev
)
572 cistpl_manfid_t manf_id
;
573 cistpl_funcid_t func_id
;
574 cistpl_vers_1_t
*vers1
;
577 vers1
= kmalloc(sizeof(*vers1
), GFP_KERNEL
);
581 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
582 CISTPL_MANFID
, &manf_id
)) {
583 p_dev
->manf_id
= manf_id
.manf
;
584 p_dev
->card_id
= manf_id
.card
;
585 p_dev
->has_manf_id
= 1;
586 p_dev
->has_card_id
= 1;
589 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
590 CISTPL_FUNCID
, &func_id
)) {
591 p_dev
->func_id
= func_id
.func
;
592 p_dev
->has_func_id
= 1;
594 /* rule of thumb: cards with no FUNCID, but with
595 * common memory device geometry information, are
596 * probably memory cards (from pcmcia-cs) */
597 cistpl_device_geo_t
*devgeo
;
599 devgeo
= kmalloc(sizeof(*devgeo
), GFP_KERNEL
);
604 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
605 CISTPL_DEVICE_GEO
, devgeo
)) {
606 ds_dbg(0, "mem device geometry probably means "
608 p_dev
->func_id
= CISTPL_FUNCID_MEMORY
;
609 p_dev
->has_func_id
= 1;
614 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
, CISTPL_VERS_1
,
616 for (i
=0; i
< vers1
->ns
; i
++) {
620 tmp
= vers1
->str
+ vers1
->ofs
[i
];
622 length
= strlen(tmp
) + 1;
623 if ((length
< 2) || (length
> 255))
626 p_dev
->prod_id
[i
] = kmalloc(sizeof(char) * length
,
628 if (!p_dev
->prod_id
[i
])
631 p_dev
->prod_id
[i
] = strncpy(p_dev
->prod_id
[i
],
641 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
642 * Serializes pcmcia_device_add; will most likely be removed in future.
644 * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
645 * won't work, this doesn't matter much at the moment: the driver core doesn't
648 static DEFINE_MUTEX(device_add_lock
);
650 struct pcmcia_device
* pcmcia_device_add(struct pcmcia_socket
*s
, unsigned int function
)
652 struct pcmcia_device
*p_dev
, *tmp_dev
;
656 s
= pcmcia_get_socket(s
);
660 mutex_lock(&device_add_lock
);
662 ds_dbg(3, "adding device to %d, function %d\n", s
->sock
, function
);
664 /* max of 4 devices per card */
665 if (s
->device_count
== 4)
668 p_dev
= kzalloc(sizeof(struct pcmcia_device
), GFP_KERNEL
);
673 p_dev
->device_no
= (s
->device_count
++);
674 p_dev
->func
= function
;
676 p_dev
->dev
.bus
= &pcmcia_bus_type
;
677 p_dev
->dev
.parent
= s
->dev
.parent
;
678 p_dev
->dev
.release
= pcmcia_release_dev
;
679 /* by default don't allow DMA */
680 p_dev
->dma_mask
= DMA_MASK_NONE
;
681 p_dev
->dev
.dma_mask
= &p_dev
->dma_mask
;
682 bus_id_len
= sprintf (p_dev
->dev
.bus_id
, "%d.%d", p_dev
->socket
->sock
, p_dev
->device_no
);
684 p_dev
->devname
= kmalloc(6 + bus_id_len
+ 1, GFP_KERNEL
);
687 sprintf (p_dev
->devname
, "pcmcia%s", p_dev
->dev
.bus_id
);
688 ds_dbg(3, "devname is %s\n", p_dev
->devname
);
690 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
693 * p_dev->function_config must be the same for all card functions.
694 * Note that this is serialized by the device_add_lock, so that
695 * only one such struct will be created.
697 list_for_each_entry(tmp_dev
, &s
->devices_list
, socket_device_list
)
698 if (p_dev
->func
== tmp_dev
->func
) {
699 p_dev
->function_config
= tmp_dev
->function_config
;
700 kref_get(&p_dev
->function_config
->ref
);
703 /* Add to the list in pcmcia_bus_socket */
704 list_add(&p_dev
->socket_device_list
, &s
->devices_list
);
706 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
708 if (!p_dev
->function_config
) {
709 ds_dbg(3, "creating config_t for %s\n", p_dev
->dev
.bus_id
);
710 p_dev
->function_config
= kzalloc(sizeof(struct config_t
),
712 if (!p_dev
->function_config
)
714 kref_init(&p_dev
->function_config
->ref
);
717 printk(KERN_NOTICE
"pcmcia: registering new device %s\n",
720 pcmcia_device_query(p_dev
);
722 if (device_register(&p_dev
->dev
))
725 mutex_unlock(&device_add_lock
);
730 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
731 list_del(&p_dev
->socket_device_list
);
732 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
735 kfree(p_dev
->devname
);
739 mutex_unlock(&device_add_lock
);
740 pcmcia_put_socket(s
);
746 static int pcmcia_card_add(struct pcmcia_socket
*s
)
748 cistpl_longlink_mfc_t mfc
;
749 unsigned int no_funcs
, i
, no_chains
;
752 if (!(s
->resource_setup_done
)) {
753 ds_dbg(3, "no resources available, delaying card_add\n");
754 return -EAGAIN
; /* try again, but later... */
757 if (pcmcia_validate_mem(s
)) {
758 ds_dbg(3, "validating mem resources failed, "
759 "delaying card_add\n");
760 return -EAGAIN
; /* try again, but later... */
763 ret
= pccard_validate_cis(s
, BIND_FN_ALL
, &no_chains
);
764 if (ret
|| !no_chains
) {
765 ds_dbg(0, "invalid CIS or invalid resources\n");
769 if (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_LONGLINK_MFC
, &mfc
))
773 s
->functions
= no_funcs
;
775 for (i
=0; i
< no_funcs
; i
++)
776 pcmcia_device_add(s
, i
);
782 static void pcmcia_delayed_add_device(struct work_struct
*work
)
784 struct pcmcia_socket
*s
=
785 container_of(work
, struct pcmcia_socket
, device_add
);
786 ds_dbg(1, "adding additional device to %d\n", s
->sock
);
787 pcmcia_device_add(s
, s
->pcmcia_state
.mfc_pfc
);
788 s
->pcmcia_state
.device_add_pending
= 0;
789 s
->pcmcia_state
.mfc_pfc
= 0;
792 static int pcmcia_requery(struct device
*dev
, void * _data
)
794 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
795 if (!p_dev
->dev
.driver
) {
796 ds_dbg(1, "update device information for %s\n",
798 pcmcia_device_query(p_dev
);
804 static void pcmcia_bus_rescan(struct pcmcia_socket
*skt
, int new_cis
)
810 /* must be called with skt_mutex held */
811 ds_dbg(0, "re-scanning socket %d\n", skt
->sock
);
813 spin_lock_irqsave(&pcmcia_dev_list_lock
, flags
);
814 if (list_empty(&skt
->devices_list
))
816 spin_unlock_irqrestore(&pcmcia_dev_list_lock
, flags
);
818 /* If this is because of a CIS override, start over */
819 if (new_cis
&& !no_devices
)
820 pcmcia_card_remove(skt
, NULL
);
822 /* if no devices were added for this socket yet because of
823 * missing resource information or other trouble, we need to
825 if (no_devices
|| new_cis
) {
826 ret
= pcmcia_card_add(skt
);
831 /* some device information might have changed because of a CIS
832 * update or because we can finally read it correctly... so
833 * determine it again, overwriting old values if necessary. */
834 bus_for_each_dev(&pcmcia_bus_type
, NULL
, NULL
, pcmcia_requery
);
836 /* we re-scan all devices, not just the ones connected to this
837 * socket. This does not matter, though. */
838 ret
= bus_rescan_devices(&pcmcia_bus_type
);
840 printk(KERN_INFO
"pcmcia: bus_rescan_devices failed\n");
843 #ifdef CONFIG_PCMCIA_LOAD_CIS
846 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
847 * @dev: the pcmcia device which needs a CIS override
848 * @filename: requested filename in /lib/firmware/
850 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
851 * the one provided by the card is broken. The firmware files reside in
852 * /lib/firmware/ in userspace.
854 static int pcmcia_load_firmware(struct pcmcia_device
*dev
, char * filename
)
856 struct pcmcia_socket
*s
= dev
->socket
;
857 const struct firmware
*fw
;
858 char path
[FIRMWARE_NAME_MAX
];
863 cistpl_longlink_mfc_t mfc
;
868 ds_dbg(1, "trying to load CIS file %s\n", filename
);
870 if (strlen(filename
) > (FIRMWARE_NAME_MAX
- 1)) {
871 printk(KERN_WARNING
"pcmcia: CIS filename is too long [%s]\n",
876 snprintf(path
, sizeof(path
), "%s", filename
);
878 if (request_firmware(&fw
, path
, &dev
->dev
) == 0) {
879 if (fw
->size
>= CISTPL_MAX_CIS_SIZE
) {
881 printk(KERN_ERR
"pcmcia: CIS override is too big\n");
885 cis
= kzalloc(sizeof(cisdump_t
), GFP_KERNEL
);
891 cis
->Length
= fw
->size
+ 1;
892 memcpy(cis
->Data
, fw
->data
, fw
->size
);
894 if (!pcmcia_replace_cis(s
, cis
))
897 printk(KERN_ERR
"pcmcia: CIS override failed\n");
902 /* update information */
903 pcmcia_device_query(dev
);
905 /* does this cis override add or remove functions? */
906 old_funcs
= s
->functions
;
908 if (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_LONGLINK_MFC
, &mfc
))
912 s
->functions
= no_funcs
;
914 if (old_funcs
> no_funcs
)
915 pcmcia_card_remove(s
, dev
);
916 else if (no_funcs
> old_funcs
)
917 pcmcia_add_device_later(s
, 1);
920 release_firmware(fw
);
925 #else /* !CONFIG_PCMCIA_LOAD_CIS */
927 static inline int pcmcia_load_firmware(struct pcmcia_device
*dev
, char * filename
)
935 static inline int pcmcia_devmatch(struct pcmcia_device
*dev
,
936 struct pcmcia_device_id
*did
)
938 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_MANF_ID
) {
939 if ((!dev
->has_manf_id
) || (dev
->manf_id
!= did
->manf_id
))
943 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_CARD_ID
) {
944 if ((!dev
->has_card_id
) || (dev
->card_id
!= did
->card_id
))
948 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FUNCTION
) {
949 if (dev
->func
!= did
->function
)
953 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID1
) {
954 if (!dev
->prod_id
[0])
956 if (strcmp(did
->prod_id
[0], dev
->prod_id
[0]))
960 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID2
) {
961 if (!dev
->prod_id
[1])
963 if (strcmp(did
->prod_id
[1], dev
->prod_id
[1]))
967 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID3
) {
968 if (!dev
->prod_id
[2])
970 if (strcmp(did
->prod_id
[2], dev
->prod_id
[2]))
974 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID4
) {
975 if (!dev
->prod_id
[3])
977 if (strcmp(did
->prod_id
[3], dev
->prod_id
[3]))
981 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_DEVICE_NO
) {
982 if (dev
->device_no
!= did
->device_no
)
986 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FUNC_ID
) {
987 if ((!dev
->has_func_id
) || (dev
->func_id
!= did
->func_id
))
990 /* if this is a pseudo-multi-function device,
991 * we need explicit matches */
992 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_DEVICE_NO
)
997 /* also, FUNC_ID matching needs to be activated by userspace
998 * after it has re-checked that there is no possible module
999 * with a prod_id/manf_id/card_id match.
1001 ds_dbg(0, "skipping FUNC_ID match for %s until userspace "
1002 "interaction\n", dev
->dev
.bus_id
);
1003 if (!dev
->allow_func_id_match
)
1007 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FAKE_CIS
) {
1008 ds_dbg(0, "device %s needs a fake CIS\n", dev
->dev
.bus_id
);
1009 if (!dev
->socket
->fake_cis
)
1010 pcmcia_load_firmware(dev
, did
->cisfile
);
1012 if (!dev
->socket
->fake_cis
)
1016 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_ANONYMOUS
) {
1019 if (dev
->prod_id
[i
])
1021 if (dev
->has_manf_id
|| dev
->has_card_id
|| dev
->has_func_id
)
1025 dev
->dev
.driver_data
= (void *) did
;
1031 static int pcmcia_bus_match(struct device
* dev
, struct device_driver
* drv
) {
1032 struct pcmcia_device
* p_dev
= to_pcmcia_dev(dev
);
1033 struct pcmcia_driver
* p_drv
= to_pcmcia_drv(drv
);
1034 struct pcmcia_device_id
*did
= p_drv
->id_table
;
1035 struct pcmcia_dynid
*dynid
;
1037 /* match dynamic devices first */
1038 spin_lock(&p_drv
->dynids
.lock
);
1039 list_for_each_entry(dynid
, &p_drv
->dynids
.list
, node
) {
1040 ds_dbg(3, "trying to match %s to %s\n", dev
->bus_id
,
1042 if (pcmcia_devmatch(p_dev
, &dynid
->id
)) {
1043 ds_dbg(0, "matched %s to %s\n", dev
->bus_id
,
1045 spin_unlock(&p_drv
->dynids
.lock
);
1049 spin_unlock(&p_drv
->dynids
.lock
);
1051 #ifdef CONFIG_PCMCIA_IOCTL
1052 /* matching by cardmgr */
1053 if (p_dev
->cardmgr
== p_drv
) {
1054 ds_dbg(0, "cardmgr matched %s to %s\n", dev
->bus_id
,
1060 while (did
&& did
->match_flags
) {
1061 ds_dbg(3, "trying to match %s to %s\n", dev
->bus_id
,
1063 if (pcmcia_devmatch(p_dev
, did
)) {
1064 ds_dbg(0, "matched %s to %s\n", dev
->bus_id
,
1074 #ifdef CONFIG_HOTPLUG
1076 static int pcmcia_bus_uevent(struct device
*dev
, struct kobj_uevent_env
*env
)
1078 struct pcmcia_device
*p_dev
;
1080 u32 hash
[4] = { 0, 0, 0, 0};
1085 p_dev
= to_pcmcia_dev(dev
);
1087 /* calculate hashes */
1088 for (i
=0; i
<4; i
++) {
1089 if (!p_dev
->prod_id
[i
])
1091 hash
[i
] = crc32(0, p_dev
->prod_id
[i
], strlen(p_dev
->prod_id
[i
]));
1094 if (add_uevent_var(env
, "SOCKET_NO=%u", p_dev
->socket
->sock
))
1097 if (add_uevent_var(env
, "DEVICE_NO=%02X", p_dev
->device_no
))
1100 if (add_uevent_var(env
, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1101 "pa%08Xpb%08Xpc%08Xpd%08X",
1102 p_dev
->has_manf_id
? p_dev
->manf_id
: 0,
1103 p_dev
->has_card_id
? p_dev
->card_id
: 0,
1104 p_dev
->has_func_id
? p_dev
->func_id
: 0,
1118 static int pcmcia_bus_uevent(struct device
*dev
, struct kobj_uevent_env
*env
)
1125 /************************ runtime PM support ***************************/
1127 static int pcmcia_dev_suspend(struct device
*dev
, pm_message_t state
);
1128 static int pcmcia_dev_resume(struct device
*dev
);
1130 static int runtime_suspend(struct device
*dev
)
1135 rc
= pcmcia_dev_suspend(dev
, PMSG_SUSPEND
);
1140 static void runtime_resume(struct device
*dev
)
1145 rc
= pcmcia_dev_resume(dev
);
1149 /************************ per-device sysfs output ***************************/
1151 #define pcmcia_device_attr(field, test, format) \
1152 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1154 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1155 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
1158 #define pcmcia_device_stringattr(name, field) \
1159 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1161 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1162 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
1165 pcmcia_device_attr(func
, socket
, "0x%02x\n");
1166 pcmcia_device_attr(func_id
, has_func_id
, "0x%02x\n");
1167 pcmcia_device_attr(manf_id
, has_manf_id
, "0x%04x\n");
1168 pcmcia_device_attr(card_id
, has_card_id
, "0x%04x\n");
1169 pcmcia_device_stringattr(prod_id1
, prod_id
[0]);
1170 pcmcia_device_stringattr(prod_id2
, prod_id
[1]);
1171 pcmcia_device_stringattr(prod_id3
, prod_id
[2]);
1172 pcmcia_device_stringattr(prod_id4
, prod_id
[3]);
1175 static ssize_t
pcmcia_show_pm_state(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1177 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1179 if (p_dev
->suspended
)
1180 return sprintf(buf
, "off\n");
1182 return sprintf(buf
, "on\n");
1185 static ssize_t
pcmcia_store_pm_state(struct device
*dev
, struct device_attribute
*attr
,
1186 const char *buf
, size_t count
)
1188 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1194 if ((!p_dev
->suspended
) && !strncmp(buf
, "off", 3))
1195 ret
= runtime_suspend(dev
);
1196 else if (p_dev
->suspended
&& !strncmp(buf
, "on", 2))
1197 runtime_resume(dev
);
1199 return ret
? ret
: count
;
1203 static ssize_t
modalias_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1205 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1207 u32 hash
[4] = { 0, 0, 0, 0};
1209 /* calculate hashes */
1210 for (i
=0; i
<4; i
++) {
1211 if (!p_dev
->prod_id
[i
])
1213 hash
[i
] = crc32(0,p_dev
->prod_id
[i
],strlen(p_dev
->prod_id
[i
]));
1215 return sprintf(buf
, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1216 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1217 p_dev
->has_manf_id
? p_dev
->manf_id
: 0,
1218 p_dev
->has_card_id
? p_dev
->card_id
: 0,
1219 p_dev
->has_func_id
? p_dev
->func_id
: 0,
1220 p_dev
->func
, p_dev
->device_no
,
1221 hash
[0], hash
[1], hash
[2], hash
[3]);
1224 static ssize_t
pcmcia_store_allow_func_id_match(struct device
*dev
,
1225 struct device_attribute
*attr
, const char *buf
, size_t count
)
1227 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1233 mutex_lock(&p_dev
->socket
->skt_mutex
);
1234 p_dev
->allow_func_id_match
= 1;
1235 mutex_unlock(&p_dev
->socket
->skt_mutex
);
1237 ret
= bus_rescan_devices(&pcmcia_bus_type
);
1239 printk(KERN_INFO
"pcmcia: bus_rescan_devices failed after "
1240 "allowing func_id matches\n");
1245 static struct device_attribute pcmcia_dev_attrs
[] = {
1246 __ATTR(function
, 0444, func_show
, NULL
),
1247 __ATTR(pm_state
, 0644, pcmcia_show_pm_state
, pcmcia_store_pm_state
),
1251 __ATTR_RO(prod_id1
),
1252 __ATTR_RO(prod_id2
),
1253 __ATTR_RO(prod_id3
),
1254 __ATTR_RO(prod_id4
),
1255 __ATTR_RO(modalias
),
1256 __ATTR(allow_func_id_match
, 0200, NULL
, pcmcia_store_allow_func_id_match
),
1260 /* PM support, also needed for reset */
1262 static int pcmcia_dev_suspend(struct device
* dev
, pm_message_t state
)
1264 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1265 struct pcmcia_driver
*p_drv
= NULL
;
1268 if (p_dev
->suspended
)
1271 ds_dbg(2, "suspending %s\n", dev
->bus_id
);
1274 p_drv
= to_pcmcia_drv(dev
->driver
);
1279 if (p_drv
->suspend
) {
1280 ret
= p_drv
->suspend(p_dev
);
1282 printk(KERN_ERR
"pcmcia: device %s (driver %s) did "
1283 "not want to go to sleep (%d)\n",
1284 p_dev
->devname
, p_drv
->drv
.name
, ret
);
1289 if (p_dev
->device_no
== p_dev
->func
) {
1290 ds_dbg(2, "releasing configuration for %s\n", dev
->bus_id
);
1291 pcmcia_release_configuration(p_dev
);
1296 p_dev
->suspended
= 1;
1301 static int pcmcia_dev_resume(struct device
* dev
)
1303 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1304 struct pcmcia_driver
*p_drv
= NULL
;
1307 if (!p_dev
->suspended
)
1310 ds_dbg(2, "resuming %s\n", dev
->bus_id
);
1313 p_drv
= to_pcmcia_drv(dev
->driver
);
1318 if (p_dev
->device_no
== p_dev
->func
) {
1319 ds_dbg(2, "requesting configuration for %s\n", dev
->bus_id
);
1320 ret
= pcmcia_request_configuration(p_dev
, &p_dev
->conf
);
1326 ret
= p_drv
->resume(p_dev
);
1330 p_dev
->suspended
= 0;
1335 static int pcmcia_bus_suspend_callback(struct device
*dev
, void * _data
)
1337 struct pcmcia_socket
*skt
= _data
;
1338 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1340 if (p_dev
->socket
!= skt
|| p_dev
->suspended
)
1343 return runtime_suspend(dev
);
1346 static int pcmcia_bus_resume_callback(struct device
*dev
, void * _data
)
1348 struct pcmcia_socket
*skt
= _data
;
1349 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1351 if (p_dev
->socket
!= skt
|| !p_dev
->suspended
)
1354 runtime_resume(dev
);
1359 static int pcmcia_bus_resume(struct pcmcia_socket
*skt
)
1361 ds_dbg(2, "resuming socket %d\n", skt
->sock
);
1362 bus_for_each_dev(&pcmcia_bus_type
, NULL
, skt
, pcmcia_bus_resume_callback
);
1366 static int pcmcia_bus_suspend(struct pcmcia_socket
*skt
)
1368 ds_dbg(2, "suspending socket %d\n", skt
->sock
);
1369 if (bus_for_each_dev(&pcmcia_bus_type
, NULL
, skt
,
1370 pcmcia_bus_suspend_callback
)) {
1371 pcmcia_bus_resume(skt
);
1378 /*======================================================================
1380 The card status event handler.
1382 ======================================================================*/
1384 /* Normally, the event is passed to individual drivers after
1385 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
1386 * is inversed to maintain historic compatibility.
1389 static int ds_event(struct pcmcia_socket
*skt
, event_t event
, int priority
)
1391 struct pcmcia_socket
*s
= pcmcia_get_socket(skt
);
1394 printk(KERN_ERR
"PCMCIA obtaining reference to socket %p " \
1395 "failed, event 0x%x lost!\n", skt
, event
);
1399 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
1400 event
, priority
, skt
);
1403 case CS_EVENT_CARD_REMOVAL
:
1404 s
->pcmcia_state
.present
= 0;
1405 pcmcia_card_remove(skt
, NULL
);
1406 handle_event(skt
, event
);
1409 case CS_EVENT_CARD_INSERTION
:
1410 s
->pcmcia_state
.present
= 1;
1411 pcmcia_card_add(skt
);
1412 handle_event(skt
, event
);
1415 case CS_EVENT_EJECTION_REQUEST
:
1418 case CS_EVENT_PM_SUSPEND
:
1419 case CS_EVENT_PM_RESUME
:
1420 case CS_EVENT_RESET_PHYSICAL
:
1421 case CS_EVENT_CARD_RESET
:
1423 handle_event(skt
, event
);
1427 pcmcia_put_socket(s
);
1433 struct pcmcia_device
* pcmcia_dev_present(struct pcmcia_device
*_p_dev
)
1435 struct pcmcia_device
*p_dev
;
1436 struct pcmcia_device
*ret
= NULL
;
1438 p_dev
= pcmcia_get_dev(_p_dev
);
1442 if (!p_dev
->socket
->pcmcia_state
.present
)
1445 if (p_dev
->_removed
)
1448 if (p_dev
->suspended
)
1453 pcmcia_put_dev(p_dev
);
1456 EXPORT_SYMBOL(pcmcia_dev_present
);
1459 static struct pcmcia_callback pcmcia_bus_callback
= {
1460 .owner
= THIS_MODULE
,
1462 .requery
= pcmcia_bus_rescan
,
1463 .suspend
= pcmcia_bus_suspend
,
1464 .resume
= pcmcia_bus_resume
,
1467 static int __devinit
pcmcia_bus_add_socket(struct device
*dev
,
1468 struct class_interface
*class_intf
)
1470 struct pcmcia_socket
*socket
= dev_get_drvdata(dev
);
1473 socket
= pcmcia_get_socket(socket
);
1475 printk(KERN_ERR
"PCMCIA obtaining reference to socket %p failed\n", socket
);
1480 * Ugly. But we want to wait for the socket threads to have started up.
1481 * We really should let the drivers themselves drive some of this..
1485 #ifdef CONFIG_PCMCIA_IOCTL
1486 init_waitqueue_head(&socket
->queue
);
1488 INIT_LIST_HEAD(&socket
->devices_list
);
1489 INIT_WORK(&socket
->device_add
, pcmcia_delayed_add_device
);
1490 memset(&socket
->pcmcia_state
, 0, sizeof(u8
));
1491 socket
->device_count
= 0;
1493 ret
= pccard_register_pcmcia(socket
, &pcmcia_bus_callback
);
1495 printk(KERN_ERR
"PCMCIA registration PCCard core failed for socket %p\n", socket
);
1496 pcmcia_put_socket(socket
);
1503 static void pcmcia_bus_remove_socket(struct device
*dev
,
1504 struct class_interface
*class_intf
)
1506 struct pcmcia_socket
*socket
= dev_get_drvdata(dev
);
1511 socket
->pcmcia_state
.dead
= 1;
1512 pccard_register_pcmcia(socket
, NULL
);
1514 /* unregister any unbound devices */
1515 mutex_lock(&socket
->skt_mutex
);
1516 pcmcia_card_remove(socket
, NULL
);
1517 mutex_unlock(&socket
->skt_mutex
);
1519 pcmcia_put_socket(socket
);
1525 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1526 static struct class_interface pcmcia_bus_interface __refdata
= {
1527 .class = &pcmcia_socket_class
,
1528 .add_dev
= &pcmcia_bus_add_socket
,
1529 .remove_dev
= &pcmcia_bus_remove_socket
,
1533 struct bus_type pcmcia_bus_type
= {
1535 .uevent
= pcmcia_bus_uevent
,
1536 .match
= pcmcia_bus_match
,
1537 .dev_attrs
= pcmcia_dev_attrs
,
1538 .probe
= pcmcia_device_probe
,
1539 .remove
= pcmcia_device_remove
,
1540 .suspend
= pcmcia_dev_suspend
,
1541 .resume
= pcmcia_dev_resume
,
1545 static int __init
init_pcmcia_bus(void)
1549 spin_lock_init(&pcmcia_dev_list_lock
);
1551 ret
= bus_register(&pcmcia_bus_type
);
1553 printk(KERN_WARNING
"pcmcia: bus_register error: %d\n", ret
);
1556 ret
= class_interface_register(&pcmcia_bus_interface
);
1559 "pcmcia: class_interface_register error: %d\n", ret
);
1560 bus_unregister(&pcmcia_bus_type
);
1564 pcmcia_setup_ioctl();
1568 fs_initcall(init_pcmcia_bus
); /* one level after subsys_initcall so that
1569 * pcmcia_socket_class is already registered */
1572 static void __exit
exit_pcmcia_bus(void)
1574 pcmcia_cleanup_ioctl();
1576 class_interface_unregister(&pcmcia_bus_interface
);
1578 bus_unregister(&pcmcia_bus_type
);
1580 module_exit(exit_pcmcia_bus
);