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>
27 #include <linux/slab.h>
29 #include <pcmcia/cs_types.h>
30 #include <pcmcia/cs.h>
31 #include <pcmcia/cistpl.h>
32 #include <pcmcia/ds.h>
33 #include <pcmcia/ss.h>
35 #include "cs_internal.h"
37 /*====================================================================*/
39 /* Module parameters */
41 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
42 MODULE_DESCRIPTION("PCMCIA Driver Services");
43 MODULE_LICENSE("GPL");
46 /*====================================================================*/
48 static void pcmcia_check_driver(struct pcmcia_driver
*p_drv
)
50 struct pcmcia_device_id
*did
= p_drv
->id_table
;
54 if (!p_drv
->probe
|| !p_drv
->remove
)
55 printk(KERN_DEBUG
"pcmcia: %s lacks a requisite callback "
56 "function\n", p_drv
->drv
.name
);
58 while (did
&& did
->match_flags
) {
59 for (i
= 0; i
< 4; i
++) {
63 hash
= crc32(0, did
->prod_id
[i
], strlen(did
->prod_id
[i
]));
64 if (hash
== did
->prod_id_hash
[i
])
67 printk(KERN_DEBUG
"pcmcia: %s: invalid hash for "
68 "product string \"%s\": is 0x%x, should "
69 "be 0x%x\n", p_drv
->drv
.name
, did
->prod_id
[i
],
70 did
->prod_id_hash
[i
], hash
);
71 printk(KERN_DEBUG
"pcmcia: see "
72 "Documentation/pcmcia/devicetable.txt for "
82 /*======================================================================*/
86 struct list_head node
;
87 struct pcmcia_device_id id
;
91 * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices
92 * @driver: target device driver
93 * @buf: buffer for scanning device ID data
96 * Adds a new dynamic PCMCIA device ID to this driver,
97 * and causes the driver to probe for all devices again.
100 pcmcia_store_new_id(struct device_driver
*driver
, const char *buf
, size_t count
)
102 struct pcmcia_dynid
*dynid
;
103 struct pcmcia_driver
*pdrv
= to_pcmcia_drv(driver
);
104 __u16 match_flags
, manf_id
, card_id
;
105 __u8 func_id
, function
, device_no
;
106 __u32 prod_id_hash
[4] = {0, 0, 0, 0};
110 fields
= sscanf(buf
, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
111 &match_flags
, &manf_id
, &card_id
, &func_id
, &function
, &device_no
,
112 &prod_id_hash
[0], &prod_id_hash
[1], &prod_id_hash
[2], &prod_id_hash
[3]);
116 dynid
= kzalloc(sizeof(struct pcmcia_dynid
), GFP_KERNEL
);
120 dynid
->id
.match_flags
= match_flags
;
121 dynid
->id
.manf_id
= manf_id
;
122 dynid
->id
.card_id
= card_id
;
123 dynid
->id
.func_id
= func_id
;
124 dynid
->id
.function
= function
;
125 dynid
->id
.device_no
= device_no
;
126 memcpy(dynid
->id
.prod_id_hash
, prod_id_hash
, sizeof(__u32
) * 4);
128 mutex_lock(&pdrv
->dynids
.lock
);
129 list_add_tail(&dynid
->node
, &pdrv
->dynids
.list
);
130 mutex_unlock(&pdrv
->dynids
.lock
);
132 if (get_driver(&pdrv
->drv
)) {
133 retval
= driver_attach(&pdrv
->drv
);
134 put_driver(&pdrv
->drv
);
141 static DRIVER_ATTR(new_id
, S_IWUSR
, NULL
, pcmcia_store_new_id
);
144 pcmcia_free_dynids(struct pcmcia_driver
*drv
)
146 struct pcmcia_dynid
*dynid
, *n
;
148 mutex_lock(&drv
->dynids
.lock
);
149 list_for_each_entry_safe(dynid
, n
, &drv
->dynids
.list
, node
) {
150 list_del(&dynid
->node
);
153 mutex_unlock(&drv
->dynids
.lock
);
157 pcmcia_create_newid_file(struct pcmcia_driver
*drv
)
160 if (drv
->probe
!= NULL
)
161 error
= driver_create_file(&drv
->drv
, &driver_attr_new_id
);
167 * pcmcia_register_driver - register a PCMCIA driver with the bus core
168 * @driver: the &driver being registered
170 * Registers a PCMCIA driver with the PCMCIA bus core.
172 int pcmcia_register_driver(struct pcmcia_driver
*driver
)
179 pcmcia_check_driver(driver
);
181 /* initialize common fields */
182 driver
->drv
.bus
= &pcmcia_bus_type
;
183 driver
->drv
.owner
= driver
->owner
;
184 mutex_init(&driver
->dynids
.lock
);
185 INIT_LIST_HEAD(&driver
->dynids
.list
);
187 pr_debug("registering driver %s\n", driver
->drv
.name
);
189 error
= driver_register(&driver
->drv
);
193 error
= pcmcia_create_newid_file(driver
);
195 driver_unregister(&driver
->drv
);
199 EXPORT_SYMBOL(pcmcia_register_driver
);
202 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
203 * @driver: the &driver being unregistered
205 void pcmcia_unregister_driver(struct pcmcia_driver
*driver
)
207 pr_debug("unregistering driver %s\n", driver
->drv
.name
);
208 driver_unregister(&driver
->drv
);
209 pcmcia_free_dynids(driver
);
211 EXPORT_SYMBOL(pcmcia_unregister_driver
);
214 /* pcmcia_device handling */
216 struct pcmcia_device
*pcmcia_get_dev(struct pcmcia_device
*p_dev
)
218 struct device
*tmp_dev
;
219 tmp_dev
= get_device(&p_dev
->dev
);
222 return to_pcmcia_dev(tmp_dev
);
225 void pcmcia_put_dev(struct pcmcia_device
*p_dev
)
228 put_device(&p_dev
->dev
);
231 static void pcmcia_release_function(struct kref
*ref
)
233 struct config_t
*c
= container_of(ref
, struct config_t
, ref
);
234 pr_debug("releasing config_t\n");
238 static void pcmcia_release_dev(struct device
*dev
)
240 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
242 dev_dbg(dev
, "releasing device\n");
243 pcmcia_put_socket(p_dev
->socket
);
244 for (i
= 0; i
< 4; i
++)
245 kfree(p_dev
->prod_id
[i
]);
246 kfree(p_dev
->devname
);
247 kref_put(&p_dev
->function_config
->ref
, pcmcia_release_function
);
252 static int pcmcia_device_probe(struct device
*dev
)
254 struct pcmcia_device
*p_dev
;
255 struct pcmcia_driver
*p_drv
;
256 struct pcmcia_socket
*s
;
257 cistpl_config_t cis_config
;
260 dev
= get_device(dev
);
264 p_dev
= to_pcmcia_dev(dev
);
265 p_drv
= to_pcmcia_drv(dev
->driver
);
268 dev_dbg(dev
, "trying to bind to %s\n", p_drv
->drv
.name
);
270 if ((!p_drv
->probe
) || (!p_dev
->function_config
) ||
271 (!try_module_get(p_drv
->owner
))) {
276 /* set up some more device information */
277 ret
= pccard_read_tuple(p_dev
->socket
, p_dev
->func
, CISTPL_CONFIG
,
280 p_dev
->conf
.ConfigBase
= cis_config
.base
;
281 p_dev
->conf
.Present
= cis_config
.rmask
[0];
283 dev_printk(KERN_INFO
, dev
,
284 "pcmcia: could not parse base and rmask0 of CIS\n");
285 p_dev
->conf
.ConfigBase
= 0;
286 p_dev
->conf
.Present
= 0;
289 ret
= p_drv
->probe(p_dev
);
291 dev_dbg(dev
, "binding to %s failed with %d\n",
292 p_drv
->drv
.name
, ret
);
296 mutex_lock(&s
->ops_mutex
);
297 if ((s
->pcmcia_state
.has_pfc
) &&
298 (p_dev
->socket
->device_count
== 1) && (p_dev
->device_no
== 0))
299 pcmcia_parse_uevents(s
, PCMCIA_UEVENT_REQUERY
);
300 mutex_unlock(&s
->ops_mutex
);
304 module_put(p_drv
->owner
);
313 * Removes a PCMCIA card from the device tree and socket list.
315 static void pcmcia_card_remove(struct pcmcia_socket
*s
, struct pcmcia_device
*leftover
)
317 struct pcmcia_device
*p_dev
;
318 struct pcmcia_device
*tmp
;
320 dev_dbg(leftover
? &leftover
->dev
: &s
->dev
,
321 "pcmcia_card_remove(%d) %s\n", s
->sock
,
322 leftover
? leftover
->devname
: "");
324 mutex_lock(&s
->ops_mutex
);
329 mutex_unlock(&s
->ops_mutex
);
331 /* unregister all pcmcia_devices registered with this socket, except leftover */
332 list_for_each_entry_safe(p_dev
, tmp
, &s
->devices_list
, socket_device_list
) {
333 if (p_dev
== leftover
)
336 mutex_lock(&s
->ops_mutex
);
337 list_del(&p_dev
->socket_device_list
);
338 mutex_unlock(&s
->ops_mutex
);
340 dev_dbg(&p_dev
->dev
, "unregistering device\n");
341 device_unregister(&p_dev
->dev
);
347 static int pcmcia_device_remove(struct device
*dev
)
349 struct pcmcia_device
*p_dev
;
350 struct pcmcia_driver
*p_drv
;
353 p_dev
= to_pcmcia_dev(dev
);
354 p_drv
= to_pcmcia_drv(dev
->driver
);
356 dev_dbg(dev
, "removing device\n");
358 /* If we're removing the primary module driving a
359 * pseudo multi-function card, we need to unbind
362 if ((p_dev
->socket
->pcmcia_state
.has_pfc
) &&
363 (p_dev
->socket
->device_count
> 0) &&
364 (p_dev
->device_no
== 0))
365 pcmcia_card_remove(p_dev
->socket
, p_dev
);
367 /* detach the "instance" */
372 p_drv
->remove(p_dev
);
374 p_dev
->dev_node
= NULL
;
376 /* check for proper unloading */
377 if (p_dev
->_irq
|| p_dev
->_io
|| p_dev
->_locked
)
378 dev_printk(KERN_INFO
, dev
,
379 "pcmcia: driver %s did not release config properly\n",
382 for (i
= 0; i
< MAX_WIN
; i
++)
383 if (p_dev
->_win
& CLIENT_WIN_REQ(i
))
384 dev_printk(KERN_INFO
, dev
,
385 "pcmcia: driver %s did not release window properly\n",
388 /* references from pcmcia_probe_device */
389 pcmcia_put_dev(p_dev
);
390 module_put(p_drv
->owner
);
397 * pcmcia_device_query -- determine information about a pcmcia device
399 static int pcmcia_device_query(struct pcmcia_device
*p_dev
)
401 cistpl_manfid_t manf_id
;
402 cistpl_funcid_t func_id
;
403 cistpl_vers_1_t
*vers1
;
406 vers1
= kmalloc(sizeof(*vers1
), GFP_KERNEL
);
410 if (!pccard_read_tuple(p_dev
->socket
, BIND_FN_ALL
,
411 CISTPL_MANFID
, &manf_id
)) {
412 mutex_lock(&p_dev
->socket
->ops_mutex
);
413 p_dev
->manf_id
= manf_id
.manf
;
414 p_dev
->card_id
= manf_id
.card
;
415 p_dev
->has_manf_id
= 1;
416 p_dev
->has_card_id
= 1;
417 mutex_unlock(&p_dev
->socket
->ops_mutex
);
420 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
421 CISTPL_FUNCID
, &func_id
)) {
422 mutex_lock(&p_dev
->socket
->ops_mutex
);
423 p_dev
->func_id
= func_id
.func
;
424 p_dev
->has_func_id
= 1;
425 mutex_unlock(&p_dev
->socket
->ops_mutex
);
427 /* rule of thumb: cards with no FUNCID, but with
428 * common memory device geometry information, are
429 * probably memory cards (from pcmcia-cs) */
430 cistpl_device_geo_t
*devgeo
;
432 devgeo
= kmalloc(sizeof(*devgeo
), GFP_KERNEL
);
437 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
438 CISTPL_DEVICE_GEO
, devgeo
)) {
440 "mem device geometry probably means "
442 mutex_lock(&p_dev
->socket
->ops_mutex
);
443 p_dev
->func_id
= CISTPL_FUNCID_MEMORY
;
444 p_dev
->has_func_id
= 1;
445 mutex_unlock(&p_dev
->socket
->ops_mutex
);
450 if (!pccard_read_tuple(p_dev
->socket
, BIND_FN_ALL
, CISTPL_VERS_1
,
452 mutex_lock(&p_dev
->socket
->ops_mutex
);
453 for (i
= 0; i
< min_t(unsigned int, 4, vers1
->ns
); i
++) {
458 tmp
= vers1
->str
+ vers1
->ofs
[i
];
460 length
= strlen(tmp
) + 1;
461 if ((length
< 2) || (length
> 255))
464 new = kmalloc(sizeof(char) * length
, GFP_KERNEL
);
468 new = strncpy(new, tmp
, length
);
470 tmp
= p_dev
->prod_id
[i
];
471 p_dev
->prod_id
[i
] = new;
474 mutex_unlock(&p_dev
->socket
->ops_mutex
);
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 DEFINE_MUTEX(device_add_lock
);
491 struct pcmcia_device
*pcmcia_device_add(struct pcmcia_socket
*s
, unsigned int function
)
493 struct pcmcia_device
*p_dev
, *tmp_dev
;
496 s
= pcmcia_get_socket(s
);
500 mutex_lock(&device_add_lock
);
502 pr_debug("adding device to %d, function %d\n", s
->sock
, function
);
504 p_dev
= kzalloc(sizeof(struct pcmcia_device
), GFP_KERNEL
);
508 mutex_lock(&s
->ops_mutex
);
509 p_dev
->device_no
= (s
->device_count
++);
510 mutex_unlock(&s
->ops_mutex
);
512 /* max of 2 PFC devices */
513 if ((p_dev
->device_no
>= 2) && (function
== 0))
516 /* max of 4 devices overall */
517 if (p_dev
->device_no
>= 4)
521 p_dev
->func
= function
;
523 p_dev
->dev
.bus
= &pcmcia_bus_type
;
524 p_dev
->dev
.parent
= s
->dev
.parent
;
525 p_dev
->dev
.release
= pcmcia_release_dev
;
526 /* by default don't allow DMA */
527 p_dev
->dma_mask
= DMA_MASK_NONE
;
528 p_dev
->dev
.dma_mask
= &p_dev
->dma_mask
;
529 dev_set_name(&p_dev
->dev
, "%d.%d", p_dev
->socket
->sock
, p_dev
->device_no
);
530 if (!dev_name(&p_dev
->dev
))
532 p_dev
->devname
= kasprintf(GFP_KERNEL
, "pcmcia%s", dev_name(&p_dev
->dev
));
535 dev_dbg(&p_dev
->dev
, "devname is %s\n", p_dev
->devname
);
537 mutex_lock(&s
->ops_mutex
);
540 * p_dev->function_config must be the same for all card functions.
541 * Note that this is serialized by the device_add_lock, so that
542 * only one such struct will be created.
544 list_for_each_entry(tmp_dev
, &s
->devices_list
, socket_device_list
)
545 if (p_dev
->func
== tmp_dev
->func
) {
546 p_dev
->function_config
= tmp_dev
->function_config
;
547 p_dev
->io
= tmp_dev
->io
;
548 p_dev
->irq
= tmp_dev
->irq
;
549 kref_get(&p_dev
->function_config
->ref
);
552 /* Add to the list in pcmcia_bus_socket */
553 list_add(&p_dev
->socket_device_list
, &s
->devices_list
);
555 mutex_unlock(&s
->ops_mutex
);
557 if (!p_dev
->function_config
) {
558 dev_dbg(&p_dev
->dev
, "creating config_t\n");
559 p_dev
->function_config
= kzalloc(sizeof(struct config_t
),
561 if (!p_dev
->function_config
)
563 kref_init(&p_dev
->function_config
->ref
);
566 dev_printk(KERN_NOTICE
, &p_dev
->dev
,
567 "pcmcia: registering new device %s\n",
570 pcmcia_device_query(p_dev
);
572 if (device_register(&p_dev
->dev
))
575 mutex_unlock(&device_add_lock
);
580 mutex_lock(&s
->ops_mutex
);
581 list_del(&p_dev
->socket_device_list
);
582 mutex_unlock(&s
->ops_mutex
);
585 mutex_lock(&s
->ops_mutex
);
587 mutex_unlock(&s
->ops_mutex
);
589 for (i
= 0; i
< 4; i
++)
590 kfree(p_dev
->prod_id
[i
]);
591 kfree(p_dev
->devname
);
594 mutex_unlock(&device_add_lock
);
595 pcmcia_put_socket(s
);
601 static int pcmcia_card_add(struct pcmcia_socket
*s
)
603 cistpl_longlink_mfc_t mfc
;
604 unsigned int no_funcs
, i
, no_chains
;
607 mutex_lock(&s
->ops_mutex
);
608 if (!(s
->resource_setup_done
)) {
610 "no resources available, delaying card_add\n");
611 mutex_unlock(&s
->ops_mutex
);
612 return -EAGAIN
; /* try again, but later... */
615 if (pcmcia_validate_mem(s
)) {
616 dev_dbg(&s
->dev
, "validating mem resources failed, "
617 "delaying card_add\n");
618 mutex_unlock(&s
->ops_mutex
);
619 return -EAGAIN
; /* try again, but later... */
621 mutex_unlock(&s
->ops_mutex
);
623 ret
= pccard_validate_cis(s
, &no_chains
);
624 if (ret
|| !no_chains
) {
625 dev_dbg(&s
->dev
, "invalid CIS or invalid resources\n");
629 if (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_LONGLINK_MFC
, &mfc
))
633 s
->functions
= no_funcs
;
635 for (i
= 0; i
< no_funcs
; i
++)
636 pcmcia_device_add(s
, i
);
642 static int pcmcia_requery_callback(struct device
*dev
, void * _data
)
644 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
645 if (!p_dev
->dev
.driver
) {
646 dev_dbg(dev
, "update device information\n");
647 pcmcia_device_query(p_dev
);
654 static void pcmcia_requery(struct pcmcia_socket
*s
)
658 if (s
->functions
== 0) {
663 /* some device information might have changed because of a CIS
664 * update or because we can finally read it correctly... so
665 * determine it again, overwriting old values if necessary. */
666 bus_for_each_dev(&pcmcia_bus_type
, NULL
, NULL
, pcmcia_requery_callback
);
668 /* if the CIS changed, we need to check whether the number of
669 * functions changed. */
671 int old_funcs
, new_funcs
;
672 cistpl_longlink_mfc_t mfc
;
674 /* does this cis override add or remove functions? */
675 old_funcs
= s
->functions
;
677 if (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_LONGLINK_MFC
,
682 if (old_funcs
!= new_funcs
) {
683 /* we need to re-start */
684 pcmcia_card_remove(s
, NULL
);
689 /* If the PCMCIA device consists of two pseudo devices,
690 * call pcmcia_device_add() -- which will fail if both
691 * devices are already registered. */
692 mutex_lock(&s
->ops_mutex
);
693 has_pfc
= s
->pcmcia_state
.has_pfc
;
694 mutex_unlock(&s
->ops_mutex
);
696 pcmcia_device_add(s
, 0);
698 /* we re-scan all devices, not just the ones connected to this
699 * socket. This does not matter, though. */
700 if (bus_rescan_devices(&pcmcia_bus_type
))
701 dev_warn(&s
->dev
, "rescanning the bus failed\n");
705 #ifdef CONFIG_PCMCIA_LOAD_CIS
708 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
709 * @dev: the pcmcia device which needs a CIS override
710 * @filename: requested filename in /lib/firmware/
712 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
713 * the one provided by the card is broken. The firmware files reside in
714 * /lib/firmware/ in userspace.
716 static int pcmcia_load_firmware(struct pcmcia_device
*dev
, char * filename
)
718 struct pcmcia_socket
*s
= dev
->socket
;
719 const struct firmware
*fw
;
721 cistpl_longlink_mfc_t mfc
;
722 int old_funcs
, new_funcs
= 1;
727 dev_dbg(&dev
->dev
, "trying to load CIS file %s\n", filename
);
729 if (request_firmware(&fw
, filename
, &dev
->dev
) == 0) {
730 if (fw
->size
>= CISTPL_MAX_CIS_SIZE
) {
732 dev_printk(KERN_ERR
, &dev
->dev
,
733 "pcmcia: CIS override is too big\n");
737 if (!pcmcia_replace_cis(s
, fw
->data
, fw
->size
))
740 dev_printk(KERN_ERR
, &dev
->dev
,
741 "pcmcia: CIS override failed\n");
745 /* we need to re-start if the number of functions changed */
746 old_funcs
= s
->functions
;
747 if (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_LONGLINK_MFC
,
751 if (old_funcs
!= new_funcs
)
754 /* update information */
755 pcmcia_device_query(dev
);
757 /* requery (as number of functions might have changed) */
758 pcmcia_parse_uevents(s
, PCMCIA_UEVENT_REQUERY
);
761 release_firmware(fw
);
766 #else /* !CONFIG_PCMCIA_LOAD_CIS */
768 static inline int pcmcia_load_firmware(struct pcmcia_device
*dev
, char * filename
)
776 static inline int pcmcia_devmatch(struct pcmcia_device
*dev
,
777 struct pcmcia_device_id
*did
)
779 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_MANF_ID
) {
780 if ((!dev
->has_manf_id
) || (dev
->manf_id
!= did
->manf_id
))
784 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_CARD_ID
) {
785 if ((!dev
->has_card_id
) || (dev
->card_id
!= did
->card_id
))
789 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FUNCTION
) {
790 if (dev
->func
!= did
->function
)
794 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID1
) {
795 if (!dev
->prod_id
[0])
797 if (strcmp(did
->prod_id
[0], dev
->prod_id
[0]))
801 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID2
) {
802 if (!dev
->prod_id
[1])
804 if (strcmp(did
->prod_id
[1], dev
->prod_id
[1]))
808 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID3
) {
809 if (!dev
->prod_id
[2])
811 if (strcmp(did
->prod_id
[2], dev
->prod_id
[2]))
815 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID4
) {
816 if (!dev
->prod_id
[3])
818 if (strcmp(did
->prod_id
[3], dev
->prod_id
[3]))
822 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_DEVICE_NO
) {
823 dev_dbg(&dev
->dev
, "this is a pseudo-multi-function device\n");
824 mutex_lock(&dev
->socket
->ops_mutex
);
825 dev
->socket
->pcmcia_state
.has_pfc
= 1;
826 mutex_unlock(&dev
->socket
->ops_mutex
);
827 if (dev
->device_no
!= did
->device_no
)
831 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FUNC_ID
) {
834 if ((!dev
->has_func_id
) || (dev
->func_id
!= did
->func_id
))
837 /* if this is a pseudo-multi-function device,
838 * we need explicit matches */
839 if (dev
->socket
->pcmcia_state
.has_pfc
)
844 /* also, FUNC_ID matching needs to be activated by userspace
845 * after it has re-checked that there is no possible module
846 * with a prod_id/manf_id/card_id match.
848 mutex_lock(&dev
->socket
->ops_mutex
);
849 ret
= dev
->allow_func_id_match
;
850 mutex_unlock(&dev
->socket
->ops_mutex
);
854 "skipping FUNC_ID match until userspace ACK\n");
859 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FAKE_CIS
) {
860 dev_dbg(&dev
->dev
, "device needs a fake CIS\n");
861 if (!dev
->socket
->fake_cis
)
862 if (pcmcia_load_firmware(dev
, did
->cisfile
))
866 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_ANONYMOUS
) {
868 for (i
= 0; i
< 4; i
++)
871 if (dev
->has_manf_id
|| dev
->has_card_id
|| dev
->has_func_id
)
879 static int pcmcia_bus_match(struct device
*dev
, struct device_driver
*drv
)
881 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
882 struct pcmcia_driver
*p_drv
= to_pcmcia_drv(drv
);
883 struct pcmcia_device_id
*did
= p_drv
->id_table
;
884 struct pcmcia_dynid
*dynid
;
886 /* match dynamic devices first */
887 mutex_lock(&p_drv
->dynids
.lock
);
888 list_for_each_entry(dynid
, &p_drv
->dynids
.list
, node
) {
889 dev_dbg(dev
, "trying to match to %s\n", drv
->name
);
890 if (pcmcia_devmatch(p_dev
, &dynid
->id
)) {
891 dev_dbg(dev
, "matched to %s\n", drv
->name
);
892 mutex_unlock(&p_drv
->dynids
.lock
);
896 mutex_unlock(&p_drv
->dynids
.lock
);
898 #ifdef CONFIG_PCMCIA_IOCTL
899 /* matching by cardmgr */
900 if (p_dev
->cardmgr
== p_drv
) {
901 dev_dbg(dev
, "cardmgr matched to %s\n", drv
->name
);
906 while (did
&& did
->match_flags
) {
907 dev_dbg(dev
, "trying to match to %s\n", drv
->name
);
908 if (pcmcia_devmatch(p_dev
, did
)) {
909 dev_dbg(dev
, "matched to %s\n", drv
->name
);
918 #ifdef CONFIG_HOTPLUG
920 static int pcmcia_bus_uevent(struct device
*dev
, struct kobj_uevent_env
*env
)
922 struct pcmcia_device
*p_dev
;
924 u32 hash
[4] = { 0, 0, 0, 0};
929 p_dev
= to_pcmcia_dev(dev
);
931 /* calculate hashes */
932 for (i
= 0; i
< 4; i
++) {
933 if (!p_dev
->prod_id
[i
])
935 hash
[i
] = crc32(0, p_dev
->prod_id
[i
], strlen(p_dev
->prod_id
[i
]));
938 if (add_uevent_var(env
, "SOCKET_NO=%u", p_dev
->socket
->sock
))
941 if (add_uevent_var(env
, "DEVICE_NO=%02X", p_dev
->device_no
))
944 if (add_uevent_var(env
, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
945 "pa%08Xpb%08Xpc%08Xpd%08X",
946 p_dev
->has_manf_id
? p_dev
->manf_id
: 0,
947 p_dev
->has_card_id
? p_dev
->card_id
: 0,
948 p_dev
->has_func_id
? p_dev
->func_id
: 0,
962 static int pcmcia_bus_uevent(struct device
*dev
, struct kobj_uevent_env
*env
)
969 /************************ runtime PM support ***************************/
971 static int pcmcia_dev_suspend(struct device
*dev
, pm_message_t state
);
972 static int pcmcia_dev_resume(struct device
*dev
);
974 static int runtime_suspend(struct device
*dev
)
979 rc
= pcmcia_dev_suspend(dev
, PMSG_SUSPEND
);
984 static int runtime_resume(struct device
*dev
)
989 rc
= pcmcia_dev_resume(dev
);
994 /************************ per-device sysfs output ***************************/
996 #define pcmcia_device_attr(field, test, format) \
997 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
999 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1000 return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \
1003 #define pcmcia_device_stringattr(name, field) \
1004 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1006 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1007 return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \
1010 pcmcia_device_attr(func
, socket
, "0x%02x\n");
1011 pcmcia_device_attr(func_id
, has_func_id
, "0x%02x\n");
1012 pcmcia_device_attr(manf_id
, has_manf_id
, "0x%04x\n");
1013 pcmcia_device_attr(card_id
, has_card_id
, "0x%04x\n");
1014 pcmcia_device_stringattr(prod_id1
, prod_id
[0]);
1015 pcmcia_device_stringattr(prod_id2
, prod_id
[1]);
1016 pcmcia_device_stringattr(prod_id3
, prod_id
[2]);
1017 pcmcia_device_stringattr(prod_id4
, prod_id
[3]);
1020 static ssize_t
pcmcia_show_pm_state(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1022 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1024 if (p_dev
->suspended
)
1025 return sprintf(buf
, "off\n");
1027 return sprintf(buf
, "on\n");
1030 static ssize_t
pcmcia_store_pm_state(struct device
*dev
, struct device_attribute
*attr
,
1031 const char *buf
, size_t count
)
1033 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1039 if ((!p_dev
->suspended
) && !strncmp(buf
, "off", 3))
1040 ret
= runtime_suspend(dev
);
1041 else if (p_dev
->suspended
&& !strncmp(buf
, "on", 2))
1042 ret
= runtime_resume(dev
);
1044 return ret
? ret
: count
;
1048 static ssize_t
modalias_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1050 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1052 u32 hash
[4] = { 0, 0, 0, 0};
1054 /* calculate hashes */
1055 for (i
= 0; i
< 4; i
++) {
1056 if (!p_dev
->prod_id
[i
])
1058 hash
[i
] = crc32(0, p_dev
->prod_id
[i
],
1059 strlen(p_dev
->prod_id
[i
]));
1061 return sprintf(buf
, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1062 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1063 p_dev
->has_manf_id
? p_dev
->manf_id
: 0,
1064 p_dev
->has_card_id
? p_dev
->card_id
: 0,
1065 p_dev
->has_func_id
? p_dev
->func_id
: 0,
1066 p_dev
->func
, p_dev
->device_no
,
1067 hash
[0], hash
[1], hash
[2], hash
[3]);
1070 static ssize_t
pcmcia_store_allow_func_id_match(struct device
*dev
,
1071 struct device_attribute
*attr
, const char *buf
, size_t count
)
1073 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1078 mutex_lock(&p_dev
->socket
->ops_mutex
);
1079 p_dev
->allow_func_id_match
= 1;
1080 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1081 pcmcia_parse_uevents(p_dev
->socket
, PCMCIA_UEVENT_REQUERY
);
1086 static struct device_attribute pcmcia_dev_attrs
[] = {
1087 __ATTR(function
, 0444, func_show
, NULL
),
1088 __ATTR(pm_state
, 0644, pcmcia_show_pm_state
, pcmcia_store_pm_state
),
1092 __ATTR_RO(prod_id1
),
1093 __ATTR_RO(prod_id2
),
1094 __ATTR_RO(prod_id3
),
1095 __ATTR_RO(prod_id4
),
1096 __ATTR_RO(modalias
),
1097 __ATTR(allow_func_id_match
, 0200, NULL
, pcmcia_store_allow_func_id_match
),
1101 /* PM support, also needed for reset */
1103 static int pcmcia_dev_suspend(struct device
*dev
, pm_message_t state
)
1105 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1106 struct pcmcia_driver
*p_drv
= NULL
;
1109 mutex_lock(&p_dev
->socket
->ops_mutex
);
1110 if (p_dev
->suspended
) {
1111 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1114 p_dev
->suspended
= 1;
1115 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1117 dev_dbg(dev
, "suspending\n");
1120 p_drv
= to_pcmcia_drv(dev
->driver
);
1125 if (p_drv
->suspend
) {
1126 ret
= p_drv
->suspend(p_dev
);
1128 dev_printk(KERN_ERR
, dev
,
1129 "pcmcia: device %s (driver %s) did "
1130 "not want to go to sleep (%d)\n",
1131 p_dev
->devname
, p_drv
->drv
.name
, ret
);
1132 mutex_lock(&p_dev
->socket
->ops_mutex
);
1133 p_dev
->suspended
= 0;
1134 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1139 if (p_dev
->device_no
== p_dev
->func
) {
1140 dev_dbg(dev
, "releasing configuration\n");
1141 pcmcia_release_configuration(p_dev
);
1149 static int pcmcia_dev_resume(struct device
*dev
)
1151 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1152 struct pcmcia_driver
*p_drv
= NULL
;
1155 mutex_lock(&p_dev
->socket
->ops_mutex
);
1156 if (!p_dev
->suspended
) {
1157 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1160 p_dev
->suspended
= 0;
1161 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1163 dev_dbg(dev
, "resuming\n");
1166 p_drv
= to_pcmcia_drv(dev
->driver
);
1171 if (p_dev
->device_no
== p_dev
->func
) {
1172 dev_dbg(dev
, "requesting configuration\n");
1173 ret
= pcmcia_request_configuration(p_dev
, &p_dev
->conf
);
1179 ret
= p_drv
->resume(p_dev
);
1186 static int pcmcia_bus_suspend_callback(struct device
*dev
, void * _data
)
1188 struct pcmcia_socket
*skt
= _data
;
1189 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1191 if (p_dev
->socket
!= skt
|| p_dev
->suspended
)
1194 return runtime_suspend(dev
);
1197 static int pcmcia_bus_resume_callback(struct device
*dev
, void * _data
)
1199 struct pcmcia_socket
*skt
= _data
;
1200 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1202 if (p_dev
->socket
!= skt
|| !p_dev
->suspended
)
1205 runtime_resume(dev
);
1210 static int pcmcia_bus_resume(struct pcmcia_socket
*skt
)
1212 dev_dbg(&skt
->dev
, "resuming socket %d\n", skt
->sock
);
1213 bus_for_each_dev(&pcmcia_bus_type
, NULL
, skt
, pcmcia_bus_resume_callback
);
1217 static int pcmcia_bus_suspend(struct pcmcia_socket
*skt
)
1219 dev_dbg(&skt
->dev
, "suspending socket %d\n", skt
->sock
);
1220 if (bus_for_each_dev(&pcmcia_bus_type
, NULL
, skt
,
1221 pcmcia_bus_suspend_callback
)) {
1222 pcmcia_bus_resume(skt
);
1229 /*======================================================================
1231 The card status event handler.
1233 ======================================================================*/
1235 /* Normally, the event is passed to individual drivers after
1236 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
1237 * is inversed to maintain historic compatibility.
1240 static int ds_event(struct pcmcia_socket
*skt
, event_t event
, int priority
)
1242 struct pcmcia_socket
*s
= pcmcia_get_socket(skt
);
1245 dev_printk(KERN_ERR
, &skt
->dev
,
1246 "PCMCIA obtaining reference to socket " \
1247 "failed, event 0x%x lost!\n", event
);
1251 dev_dbg(&skt
->dev
, "ds_event(0x%06x, %d, 0x%p)\n",
1252 event
, priority
, skt
);
1255 case CS_EVENT_CARD_REMOVAL
:
1256 atomic_set(&skt
->present
, 0);
1257 pcmcia_card_remove(skt
, NULL
);
1258 handle_event(skt
, event
);
1259 mutex_lock(&s
->ops_mutex
);
1260 destroy_cis_cache(s
);
1261 mutex_unlock(&s
->ops_mutex
);
1264 case CS_EVENT_CARD_INSERTION
:
1265 atomic_set(&skt
->present
, 1);
1266 mutex_lock(&s
->ops_mutex
);
1267 s
->pcmcia_state
.has_pfc
= 0;
1268 destroy_cis_cache(s
); /* to be on the safe side... */
1269 mutex_unlock(&s
->ops_mutex
);
1270 pcmcia_card_add(skt
);
1271 handle_event(skt
, event
);
1274 case CS_EVENT_EJECTION_REQUEST
:
1277 case CS_EVENT_PM_RESUME
:
1278 if (verify_cis_cache(skt
) != 0) {
1279 dev_dbg(&skt
->dev
, "cis mismatch - different card\n");
1280 /* first, remove the card */
1281 ds_event(skt
, CS_EVENT_CARD_REMOVAL
, CS_EVENT_PRI_HIGH
);
1282 mutex_lock(&s
->ops_mutex
);
1283 destroy_cis_cache(skt
);
1284 kfree(skt
->fake_cis
);
1285 skt
->fake_cis
= NULL
;
1286 mutex_unlock(&s
->ops_mutex
);
1287 /* now, add the new card */
1288 ds_event(skt
, CS_EVENT_CARD_INSERTION
,
1291 handle_event(skt
, event
);
1294 case CS_EVENT_PM_SUSPEND
:
1295 case CS_EVENT_RESET_PHYSICAL
:
1296 case CS_EVENT_CARD_RESET
:
1298 handle_event(skt
, event
);
1302 pcmcia_put_socket(s
);
1308 * NOTE: This is racy. There's no guarantee the card will still be
1309 * physically present, even if the call to this function returns
1310 * non-NULL. Furthermore, the device driver most likely is unbound
1311 * almost immediately, so the timeframe where pcmcia_dev_present
1312 * returns NULL is probably really really small.
1314 struct pcmcia_device
*pcmcia_dev_present(struct pcmcia_device
*_p_dev
)
1316 struct pcmcia_device
*p_dev
;
1317 struct pcmcia_device
*ret
= NULL
;
1319 p_dev
= pcmcia_get_dev(_p_dev
);
1323 if (atomic_read(&p_dev
->socket
->present
) != 0)
1326 pcmcia_put_dev(p_dev
);
1329 EXPORT_SYMBOL(pcmcia_dev_present
);
1332 static struct pcmcia_callback pcmcia_bus_callback
= {
1333 .owner
= THIS_MODULE
,
1335 .requery
= pcmcia_requery
,
1336 .validate
= pccard_validate_cis
,
1337 .suspend
= pcmcia_bus_suspend
,
1338 .resume
= pcmcia_bus_resume
,
1341 static int __devinit
pcmcia_bus_add_socket(struct device
*dev
,
1342 struct class_interface
*class_intf
)
1344 struct pcmcia_socket
*socket
= dev_get_drvdata(dev
);
1347 socket
= pcmcia_get_socket(socket
);
1349 dev_printk(KERN_ERR
, dev
,
1350 "PCMCIA obtaining reference to socket failed\n");
1354 ret
= sysfs_create_bin_file(&dev
->kobj
, &pccard_cis_attr
);
1356 dev_printk(KERN_ERR
, dev
, "PCMCIA registration failed\n");
1357 pcmcia_put_socket(socket
);
1361 #ifdef CONFIG_PCMCIA_IOCTL
1362 init_waitqueue_head(&socket
->queue
);
1364 INIT_LIST_HEAD(&socket
->devices_list
);
1365 memset(&socket
->pcmcia_state
, 0, sizeof(u8
));
1366 socket
->device_count
= 0;
1368 ret
= pccard_register_pcmcia(socket
, &pcmcia_bus_callback
);
1370 dev_printk(KERN_ERR
, dev
, "PCMCIA registration failed\n");
1371 pcmcia_put_socket(socket
);
1375 atomic_set(&socket
->present
, 0);
1380 static void pcmcia_bus_remove_socket(struct device
*dev
,
1381 struct class_interface
*class_intf
)
1383 struct pcmcia_socket
*socket
= dev_get_drvdata(dev
);
1388 pccard_register_pcmcia(socket
, NULL
);
1390 /* unregister any unbound devices */
1391 mutex_lock(&socket
->skt_mutex
);
1392 pcmcia_card_remove(socket
, NULL
);
1393 release_cis_mem(socket
);
1394 mutex_unlock(&socket
->skt_mutex
);
1396 sysfs_remove_bin_file(&dev
->kobj
, &pccard_cis_attr
);
1398 pcmcia_put_socket(socket
);
1404 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1405 static struct class_interface pcmcia_bus_interface __refdata
= {
1406 .class = &pcmcia_socket_class
,
1407 .add_dev
= &pcmcia_bus_add_socket
,
1408 .remove_dev
= &pcmcia_bus_remove_socket
,
1412 struct bus_type pcmcia_bus_type
= {
1414 .uevent
= pcmcia_bus_uevent
,
1415 .match
= pcmcia_bus_match
,
1416 .dev_attrs
= pcmcia_dev_attrs
,
1417 .probe
= pcmcia_device_probe
,
1418 .remove
= pcmcia_device_remove
,
1419 .suspend
= pcmcia_dev_suspend
,
1420 .resume
= pcmcia_dev_resume
,
1424 static int __init
init_pcmcia_bus(void)
1428 ret
= bus_register(&pcmcia_bus_type
);
1430 printk(KERN_WARNING
"pcmcia: bus_register error: %d\n", ret
);
1433 ret
= class_interface_register(&pcmcia_bus_interface
);
1436 "pcmcia: class_interface_register error: %d\n", ret
);
1437 bus_unregister(&pcmcia_bus_type
);
1441 pcmcia_setup_ioctl();
1445 fs_initcall(init_pcmcia_bus
); /* one level after subsys_initcall so that
1446 * pcmcia_socket_class is already registered */
1449 static void __exit
exit_pcmcia_bus(void)
1451 pcmcia_cleanup_ioctl();
1453 class_interface_unregister(&pcmcia_bus_interface
);
1455 bus_unregister(&pcmcia_bus_type
);
1457 module_exit(exit_pcmcia_bus
);