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 - 2010 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/cistpl.h>
30 #include <pcmcia/ds.h>
31 #include <pcmcia/ss.h>
33 #include "cs_internal.h"
35 /*====================================================================*/
37 /* Module parameters */
39 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
40 MODULE_DESCRIPTION("PCMCIA Driver Services");
41 MODULE_LICENSE("GPL");
44 /*====================================================================*/
46 static void pcmcia_check_driver(struct pcmcia_driver
*p_drv
)
48 struct pcmcia_device_id
*did
= p_drv
->id_table
;
52 if (!p_drv
->probe
|| !p_drv
->remove
)
53 printk(KERN_DEBUG
"pcmcia: %s lacks a requisite callback "
54 "function\n", p_drv
->name
);
56 while (did
&& did
->match_flags
) {
57 for (i
= 0; i
< 4; i
++) {
61 hash
= crc32(0, did
->prod_id
[i
], strlen(did
->prod_id
[i
]));
62 if (hash
== did
->prod_id_hash
[i
])
65 printk(KERN_DEBUG
"pcmcia: %s: invalid hash for "
66 "product string \"%s\": is 0x%x, should "
67 "be 0x%x\n", p_drv
->name
, did
->prod_id
[i
],
68 did
->prod_id_hash
[i
], hash
);
69 printk(KERN_DEBUG
"pcmcia: see "
70 "Documentation/pcmcia/devicetable.txt for "
80 /*======================================================================*/
84 struct list_head node
;
85 struct pcmcia_device_id id
;
89 * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices
90 * @driver: target device driver
91 * @buf: buffer for scanning device ID data
94 * Adds a new dynamic PCMCIA device ID to this driver,
95 * and causes the driver to probe for all devices again.
98 pcmcia_store_new_id(struct device_driver
*driver
, const char *buf
, size_t count
)
100 struct pcmcia_dynid
*dynid
;
101 struct pcmcia_driver
*pdrv
= to_pcmcia_drv(driver
);
102 __u16 match_flags
, manf_id
, card_id
;
103 __u8 func_id
, function
, device_no
;
104 __u32 prod_id_hash
[4] = {0, 0, 0, 0};
108 fields
= sscanf(buf
, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x",
109 &match_flags
, &manf_id
, &card_id
, &func_id
, &function
, &device_no
,
110 &prod_id_hash
[0], &prod_id_hash
[1], &prod_id_hash
[2], &prod_id_hash
[3]);
114 dynid
= kzalloc(sizeof(struct pcmcia_dynid
), GFP_KERNEL
);
118 dynid
->id
.match_flags
= match_flags
;
119 dynid
->id
.manf_id
= manf_id
;
120 dynid
->id
.card_id
= card_id
;
121 dynid
->id
.func_id
= func_id
;
122 dynid
->id
.function
= function
;
123 dynid
->id
.device_no
= device_no
;
124 memcpy(dynid
->id
.prod_id_hash
, prod_id_hash
, sizeof(__u32
) * 4);
126 mutex_lock(&pdrv
->dynids
.lock
);
127 list_add_tail(&dynid
->node
, &pdrv
->dynids
.list
);
128 mutex_unlock(&pdrv
->dynids
.lock
);
130 if (get_driver(&pdrv
->drv
)) {
131 retval
= driver_attach(&pdrv
->drv
);
132 put_driver(&pdrv
->drv
);
139 static DRIVER_ATTR(new_id
, S_IWUSR
, NULL
, pcmcia_store_new_id
);
142 pcmcia_free_dynids(struct pcmcia_driver
*drv
)
144 struct pcmcia_dynid
*dynid
, *n
;
146 mutex_lock(&drv
->dynids
.lock
);
147 list_for_each_entry_safe(dynid
, n
, &drv
->dynids
.list
, node
) {
148 list_del(&dynid
->node
);
151 mutex_unlock(&drv
->dynids
.lock
);
155 pcmcia_create_newid_file(struct pcmcia_driver
*drv
)
158 if (drv
->probe
!= NULL
)
159 error
= driver_create_file(&drv
->drv
, &driver_attr_new_id
);
165 * pcmcia_register_driver - register a PCMCIA driver with the bus core
166 * @driver: the &driver being registered
168 * Registers a PCMCIA driver with the PCMCIA bus core.
170 int pcmcia_register_driver(struct pcmcia_driver
*driver
)
177 pcmcia_check_driver(driver
);
179 /* initialize common fields */
180 driver
->drv
.bus
= &pcmcia_bus_type
;
181 driver
->drv
.owner
= driver
->owner
;
182 driver
->drv
.name
= driver
->name
;
183 mutex_init(&driver
->dynids
.lock
);
184 INIT_LIST_HEAD(&driver
->dynids
.list
);
186 pr_debug("registering driver %s\n", driver
->name
);
188 error
= driver_register(&driver
->drv
);
192 error
= pcmcia_create_newid_file(driver
);
194 driver_unregister(&driver
->drv
);
198 EXPORT_SYMBOL(pcmcia_register_driver
);
201 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
202 * @driver: the &driver being unregistered
204 void pcmcia_unregister_driver(struct pcmcia_driver
*driver
)
206 pr_debug("unregistering driver %s\n", driver
->name
);
207 driver_unregister(&driver
->drv
);
208 pcmcia_free_dynids(driver
);
210 EXPORT_SYMBOL(pcmcia_unregister_driver
);
213 /* pcmcia_device handling */
215 static struct pcmcia_device
*pcmcia_get_dev(struct pcmcia_device
*p_dev
)
217 struct device
*tmp_dev
;
218 tmp_dev
= get_device(&p_dev
->dev
);
221 return to_pcmcia_dev(tmp_dev
);
224 static void pcmcia_put_dev(struct pcmcia_device
*p_dev
)
227 put_device(&p_dev
->dev
);
230 static void pcmcia_release_function(struct kref
*ref
)
232 struct config_t
*c
= container_of(ref
, struct config_t
, ref
);
233 pr_debug("releasing config_t\n");
237 static void pcmcia_release_dev(struct device
*dev
)
239 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
241 dev_dbg(dev
, "releasing device\n");
242 pcmcia_put_socket(p_dev
->socket
);
243 for (i
= 0; i
< 4; i
++)
244 kfree(p_dev
->prod_id
[i
]);
245 kfree(p_dev
->devname
);
246 kref_put(&p_dev
->function_config
->ref
, pcmcia_release_function
);
251 static int pcmcia_device_probe(struct device
*dev
)
253 struct pcmcia_device
*p_dev
;
254 struct pcmcia_driver
*p_drv
;
255 struct pcmcia_socket
*s
;
256 cistpl_config_t cis_config
;
259 dev
= get_device(dev
);
263 p_dev
= to_pcmcia_dev(dev
);
264 p_drv
= to_pcmcia_drv(dev
->driver
);
267 dev_dbg(dev
, "trying to bind to %s\n", p_drv
->name
);
269 if ((!p_drv
->probe
) || (!p_dev
->function_config
) ||
270 (!try_module_get(p_drv
->owner
))) {
275 /* set up some more device information */
276 ret
= pccard_read_tuple(p_dev
->socket
, p_dev
->func
, CISTPL_CONFIG
,
279 p_dev
->config_base
= cis_config
.base
;
280 p_dev
->config_regs
= cis_config
.rmask
[0];
281 dev_dbg(dev
, "base %x, regs %x", p_dev
->config_base
,
284 dev_printk(KERN_INFO
, dev
,
285 "pcmcia: could not parse base and rmask0 of CIS\n");
286 p_dev
->config_base
= 0;
287 p_dev
->config_regs
= 0;
290 ret
= p_drv
->probe(p_dev
);
292 dev_dbg(dev
, "binding to %s failed with %d\n",
296 dev_dbg(dev
, "%s bound: Vpp %d.%d, idx %x, IRQ %d", p_drv
->name
,
297 p_dev
->vpp
/10, p_dev
->vpp
%10, p_dev
->config_index
, p_dev
->irq
);
298 dev_dbg(dev
, "resources: ioport %pR %pR iomem %pR %pR %pR",
299 p_dev
->resource
[0], p_dev
->resource
[1], p_dev
->resource
[2],
300 p_dev
->resource
[3], p_dev
->resource
[4]);
302 mutex_lock(&s
->ops_mutex
);
303 if ((s
->pcmcia_pfc
) &&
304 (p_dev
->socket
->device_count
== 1) && (p_dev
->device_no
== 0))
305 pcmcia_parse_uevents(s
, PCMCIA_UEVENT_REQUERY
);
306 mutex_unlock(&s
->ops_mutex
);
310 module_put(p_drv
->owner
);
319 * Removes a PCMCIA card from the device tree and socket list.
321 static void pcmcia_card_remove(struct pcmcia_socket
*s
, struct pcmcia_device
*leftover
)
323 struct pcmcia_device
*p_dev
;
324 struct pcmcia_device
*tmp
;
326 dev_dbg(leftover
? &leftover
->dev
: &s
->dev
,
327 "pcmcia_card_remove(%d) %s\n", s
->sock
,
328 leftover
? leftover
->devname
: "");
330 mutex_lock(&s
->ops_mutex
);
335 mutex_unlock(&s
->ops_mutex
);
337 /* unregister all pcmcia_devices registered with this socket, except leftover */
338 list_for_each_entry_safe(p_dev
, tmp
, &s
->devices_list
, socket_device_list
) {
339 if (p_dev
== leftover
)
342 mutex_lock(&s
->ops_mutex
);
343 list_del(&p_dev
->socket_device_list
);
344 mutex_unlock(&s
->ops_mutex
);
346 dev_dbg(&p_dev
->dev
, "unregistering device\n");
347 device_unregister(&p_dev
->dev
);
353 static int pcmcia_device_remove(struct device
*dev
)
355 struct pcmcia_device
*p_dev
;
356 struct pcmcia_driver
*p_drv
;
359 p_dev
= to_pcmcia_dev(dev
);
360 p_drv
= to_pcmcia_drv(dev
->driver
);
362 dev_dbg(dev
, "removing device\n");
364 /* If we're removing the primary module driving a
365 * pseudo multi-function card, we need to unbind
368 if ((p_dev
->socket
->pcmcia_pfc
) &&
369 (p_dev
->socket
->device_count
> 0) &&
370 (p_dev
->device_no
== 0))
371 pcmcia_card_remove(p_dev
->socket
, p_dev
);
373 /* detach the "instance" */
378 p_drv
->remove(p_dev
);
380 /* check for proper unloading */
381 if (p_dev
->_irq
|| p_dev
->_io
|| p_dev
->_locked
)
382 dev_printk(KERN_INFO
, dev
,
383 "pcmcia: driver %s did not release config properly\n",
386 for (i
= 0; i
< MAX_WIN
; i
++)
387 if (p_dev
->_win
& CLIENT_WIN_REQ(i
))
388 dev_printk(KERN_INFO
, dev
,
389 "pcmcia: driver %s did not release window properly\n",
392 /* references from pcmcia_probe_device */
393 pcmcia_put_dev(p_dev
);
394 module_put(p_drv
->owner
);
401 * pcmcia_device_query -- determine information about a pcmcia device
403 static int pcmcia_device_query(struct pcmcia_device
*p_dev
)
405 cistpl_manfid_t manf_id
;
406 cistpl_funcid_t func_id
;
407 cistpl_vers_1_t
*vers1
;
410 vers1
= kmalloc(sizeof(*vers1
), GFP_KERNEL
);
414 if (!pccard_read_tuple(p_dev
->socket
, BIND_FN_ALL
,
415 CISTPL_MANFID
, &manf_id
)) {
416 mutex_lock(&p_dev
->socket
->ops_mutex
);
417 p_dev
->manf_id
= manf_id
.manf
;
418 p_dev
->card_id
= manf_id
.card
;
419 p_dev
->has_manf_id
= 1;
420 p_dev
->has_card_id
= 1;
421 mutex_unlock(&p_dev
->socket
->ops_mutex
);
424 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
425 CISTPL_FUNCID
, &func_id
)) {
426 mutex_lock(&p_dev
->socket
->ops_mutex
);
427 p_dev
->func_id
= func_id
.func
;
428 p_dev
->has_func_id
= 1;
429 mutex_unlock(&p_dev
->socket
->ops_mutex
);
431 /* rule of thumb: cards with no FUNCID, but with
432 * common memory device geometry information, are
433 * probably memory cards (from pcmcia-cs) */
434 cistpl_device_geo_t
*devgeo
;
436 devgeo
= kmalloc(sizeof(*devgeo
), GFP_KERNEL
);
441 if (!pccard_read_tuple(p_dev
->socket
, p_dev
->func
,
442 CISTPL_DEVICE_GEO
, devgeo
)) {
444 "mem device geometry probably means "
446 mutex_lock(&p_dev
->socket
->ops_mutex
);
447 p_dev
->func_id
= CISTPL_FUNCID_MEMORY
;
448 p_dev
->has_func_id
= 1;
449 mutex_unlock(&p_dev
->socket
->ops_mutex
);
454 if (!pccard_read_tuple(p_dev
->socket
, BIND_FN_ALL
, CISTPL_VERS_1
,
456 mutex_lock(&p_dev
->socket
->ops_mutex
);
457 for (i
= 0; i
< min_t(unsigned int, 4, vers1
->ns
); i
++) {
462 tmp
= vers1
->str
+ vers1
->ofs
[i
];
464 length
= strlen(tmp
) + 1;
465 if ((length
< 2) || (length
> 255))
468 new = kmalloc(sizeof(char) * length
, GFP_KERNEL
);
472 new = strncpy(new, tmp
, length
);
474 tmp
= p_dev
->prod_id
[i
];
475 p_dev
->prod_id
[i
] = new;
478 mutex_unlock(&p_dev
->socket
->ops_mutex
);
486 static struct pcmcia_device
*pcmcia_device_add(struct pcmcia_socket
*s
,
487 unsigned int function
)
489 struct pcmcia_device
*p_dev
, *tmp_dev
;
492 s
= pcmcia_get_socket(s
);
496 pr_debug("adding device to %d, function %d\n", s
->sock
, function
);
498 p_dev
= kzalloc(sizeof(struct pcmcia_device
), GFP_KERNEL
);
502 mutex_lock(&s
->ops_mutex
);
503 p_dev
->device_no
= (s
->device_count
++);
504 mutex_unlock(&s
->ops_mutex
);
506 /* max of 2 PFC devices */
507 if ((p_dev
->device_no
>= 2) && (function
== 0))
510 /* max of 4 devices overall */
511 if (p_dev
->device_no
>= 4)
515 p_dev
->func
= function
;
517 p_dev
->dev
.bus
= &pcmcia_bus_type
;
518 p_dev
->dev
.parent
= s
->dev
.parent
;
519 p_dev
->dev
.release
= pcmcia_release_dev
;
520 /* by default don't allow DMA */
521 p_dev
->dma_mask
= DMA_MASK_NONE
;
522 p_dev
->dev
.dma_mask
= &p_dev
->dma_mask
;
523 dev_set_name(&p_dev
->dev
, "%d.%d", p_dev
->socket
->sock
, p_dev
->device_no
);
524 if (!dev_name(&p_dev
->dev
))
526 p_dev
->devname
= kasprintf(GFP_KERNEL
, "pcmcia%s", dev_name(&p_dev
->dev
));
529 dev_dbg(&p_dev
->dev
, "devname is %s\n", p_dev
->devname
);
531 mutex_lock(&s
->ops_mutex
);
534 * p_dev->function_config must be the same for all card functions.
535 * Note that this is serialized by ops_mutex, so that only one
536 * such struct will be created.
538 list_for_each_entry(tmp_dev
, &s
->devices_list
, socket_device_list
)
539 if (p_dev
->func
== tmp_dev
->func
) {
540 p_dev
->function_config
= tmp_dev
->function_config
;
541 p_dev
->irq
= tmp_dev
->irq
;
542 kref_get(&p_dev
->function_config
->ref
);
545 /* Add to the list in pcmcia_bus_socket */
546 list_add(&p_dev
->socket_device_list
, &s
->devices_list
);
548 if (pcmcia_setup_irq(p_dev
))
549 dev_warn(&p_dev
->dev
,
550 "IRQ setup failed -- device might not work\n");
552 if (!p_dev
->function_config
) {
554 dev_dbg(&p_dev
->dev
, "creating config_t\n");
555 c
= kzalloc(sizeof(struct config_t
), GFP_KERNEL
);
557 mutex_unlock(&s
->ops_mutex
);
560 p_dev
->function_config
= c
;
562 for (i
= 0; i
< MAX_IO_WIN
; i
++) {
563 c
->io
[i
].name
= p_dev
->devname
;
564 c
->io
[i
].flags
= IORESOURCE_IO
;
566 for (i
= 0; i
< MAX_WIN
; i
++) {
567 c
->mem
[i
].name
= p_dev
->devname
;
568 c
->mem
[i
].flags
= IORESOURCE_MEM
;
571 for (i
= 0; i
< MAX_IO_WIN
; i
++)
572 p_dev
->resource
[i
] = &p_dev
->function_config
->io
[i
];
573 for (; i
< (MAX_IO_WIN
+ MAX_WIN
); i
++)
574 p_dev
->resource
[i
] = &p_dev
->function_config
->mem
[i
-MAX_IO_WIN
];
576 mutex_unlock(&s
->ops_mutex
);
578 dev_printk(KERN_NOTICE
, &p_dev
->dev
,
579 "pcmcia: registering new device %s (IRQ: %d)\n",
580 p_dev
->devname
, p_dev
->irq
);
582 pcmcia_device_query(p_dev
);
584 if (device_register(&p_dev
->dev
))
590 mutex_lock(&s
->ops_mutex
);
591 list_del(&p_dev
->socket_device_list
);
592 mutex_unlock(&s
->ops_mutex
);
595 mutex_lock(&s
->ops_mutex
);
597 mutex_unlock(&s
->ops_mutex
);
599 for (i
= 0; i
< 4; i
++)
600 kfree(p_dev
->prod_id
[i
]);
601 kfree(p_dev
->devname
);
604 pcmcia_put_socket(s
);
610 static int pcmcia_card_add(struct pcmcia_socket
*s
)
612 cistpl_longlink_mfc_t mfc
;
613 unsigned int no_funcs
, i
, no_chains
;
616 mutex_lock(&s
->ops_mutex
);
617 if (!(s
->resource_setup_done
)) {
619 "no resources available, delaying card_add\n");
620 mutex_unlock(&s
->ops_mutex
);
621 return -EAGAIN
; /* try again, but later... */
624 if (pcmcia_validate_mem(s
)) {
625 dev_dbg(&s
->dev
, "validating mem resources failed, "
626 "delaying card_add\n");
627 mutex_unlock(&s
->ops_mutex
);
628 return -EAGAIN
; /* try again, but later... */
630 mutex_unlock(&s
->ops_mutex
);
632 ret
= pccard_validate_cis(s
, &no_chains
);
633 if (ret
|| !no_chains
) {
634 dev_dbg(&s
->dev
, "invalid CIS or invalid resources\n");
638 if (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_LONGLINK_MFC
, &mfc
))
642 s
->functions
= no_funcs
;
644 for (i
= 0; i
< no_funcs
; i
++)
645 pcmcia_device_add(s
, i
);
651 static int pcmcia_requery_callback(struct device
*dev
, void * _data
)
653 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
654 if (!p_dev
->dev
.driver
) {
655 dev_dbg(dev
, "update device information\n");
656 pcmcia_device_query(p_dev
);
663 static void pcmcia_requery(struct pcmcia_socket
*s
)
667 if (s
->functions
== 0) {
672 /* some device information might have changed because of a CIS
673 * update or because we can finally read it correctly... so
674 * determine it again, overwriting old values if necessary. */
675 bus_for_each_dev(&pcmcia_bus_type
, NULL
, NULL
, pcmcia_requery_callback
);
677 /* if the CIS changed, we need to check whether the number of
678 * functions changed. */
680 int old_funcs
, new_funcs
;
681 cistpl_longlink_mfc_t mfc
;
683 /* does this cis override add or remove functions? */
684 old_funcs
= s
->functions
;
686 if (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_LONGLINK_MFC
,
691 if (old_funcs
!= new_funcs
) {
692 /* we need to re-start */
693 pcmcia_card_remove(s
, NULL
);
699 /* If the PCMCIA device consists of two pseudo devices,
700 * call pcmcia_device_add() -- which will fail if both
701 * devices are already registered. */
702 mutex_lock(&s
->ops_mutex
);
703 has_pfc
= s
->pcmcia_pfc
;
704 mutex_unlock(&s
->ops_mutex
);
706 pcmcia_device_add(s
, 0);
708 /* we re-scan all devices, not just the ones connected to this
709 * socket. This does not matter, though. */
710 if (bus_rescan_devices(&pcmcia_bus_type
))
711 dev_warn(&s
->dev
, "rescanning the bus failed\n");
715 #ifdef CONFIG_PCMCIA_LOAD_CIS
718 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
719 * @dev: the pcmcia device which needs a CIS override
720 * @filename: requested filename in /lib/firmware/
722 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
723 * the one provided by the card is broken. The firmware files reside in
724 * /lib/firmware/ in userspace.
726 static int pcmcia_load_firmware(struct pcmcia_device
*dev
, char * filename
)
728 struct pcmcia_socket
*s
= dev
->socket
;
729 const struct firmware
*fw
;
731 cistpl_longlink_mfc_t mfc
;
732 int old_funcs
, new_funcs
= 1;
737 dev_dbg(&dev
->dev
, "trying to load CIS file %s\n", filename
);
739 if (request_firmware(&fw
, filename
, &dev
->dev
) == 0) {
740 if (fw
->size
>= CISTPL_MAX_CIS_SIZE
) {
742 dev_printk(KERN_ERR
, &dev
->dev
,
743 "pcmcia: CIS override is too big\n");
747 if (!pcmcia_replace_cis(s
, fw
->data
, fw
->size
))
750 dev_printk(KERN_ERR
, &dev
->dev
,
751 "pcmcia: CIS override failed\n");
755 /* we need to re-start if the number of functions changed */
756 old_funcs
= s
->functions
;
757 if (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_LONGLINK_MFC
,
761 if (old_funcs
!= new_funcs
)
764 /* update information */
765 pcmcia_device_query(dev
);
767 /* requery (as number of functions might have changed) */
768 pcmcia_parse_uevents(s
, PCMCIA_UEVENT_REQUERY
);
771 release_firmware(fw
);
776 #else /* !CONFIG_PCMCIA_LOAD_CIS */
778 static inline int pcmcia_load_firmware(struct pcmcia_device
*dev
, char * filename
)
786 static inline int pcmcia_devmatch(struct pcmcia_device
*dev
,
787 struct pcmcia_device_id
*did
)
789 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_MANF_ID
) {
790 if ((!dev
->has_manf_id
) || (dev
->manf_id
!= did
->manf_id
))
794 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_CARD_ID
) {
795 if ((!dev
->has_card_id
) || (dev
->card_id
!= did
->card_id
))
799 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FUNCTION
) {
800 if (dev
->func
!= did
->function
)
804 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID1
) {
805 if (!dev
->prod_id
[0])
807 if (strcmp(did
->prod_id
[0], dev
->prod_id
[0]))
811 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID2
) {
812 if (!dev
->prod_id
[1])
814 if (strcmp(did
->prod_id
[1], dev
->prod_id
[1]))
818 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID3
) {
819 if (!dev
->prod_id
[2])
821 if (strcmp(did
->prod_id
[2], dev
->prod_id
[2]))
825 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_PROD_ID4
) {
826 if (!dev
->prod_id
[3])
828 if (strcmp(did
->prod_id
[3], dev
->prod_id
[3]))
832 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_DEVICE_NO
) {
833 dev_dbg(&dev
->dev
, "this is a pseudo-multi-function device\n");
834 mutex_lock(&dev
->socket
->ops_mutex
);
835 dev
->socket
->pcmcia_pfc
= 1;
836 mutex_unlock(&dev
->socket
->ops_mutex
);
837 if (dev
->device_no
!= did
->device_no
)
841 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FUNC_ID
) {
844 if ((!dev
->has_func_id
) || (dev
->func_id
!= did
->func_id
))
847 /* if this is a pseudo-multi-function device,
848 * we need explicit matches */
849 if (dev
->socket
->pcmcia_pfc
)
854 /* also, FUNC_ID matching needs to be activated by userspace
855 * after it has re-checked that there is no possible module
856 * with a prod_id/manf_id/card_id match.
858 mutex_lock(&dev
->socket
->ops_mutex
);
859 ret
= dev
->allow_func_id_match
;
860 mutex_unlock(&dev
->socket
->ops_mutex
);
864 "skipping FUNC_ID match until userspace ACK\n");
869 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_FAKE_CIS
) {
870 dev_dbg(&dev
->dev
, "device needs a fake CIS\n");
871 if (!dev
->socket
->fake_cis
)
872 if (pcmcia_load_firmware(dev
, did
->cisfile
))
876 if (did
->match_flags
& PCMCIA_DEV_ID_MATCH_ANONYMOUS
) {
878 for (i
= 0; i
< 4; i
++)
881 if (dev
->has_manf_id
|| dev
->has_card_id
|| dev
->has_func_id
)
889 static int pcmcia_bus_match(struct device
*dev
, struct device_driver
*drv
)
891 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
892 struct pcmcia_driver
*p_drv
= to_pcmcia_drv(drv
);
893 struct pcmcia_device_id
*did
= p_drv
->id_table
;
894 struct pcmcia_dynid
*dynid
;
896 /* match dynamic devices first */
897 mutex_lock(&p_drv
->dynids
.lock
);
898 list_for_each_entry(dynid
, &p_drv
->dynids
.list
, node
) {
899 dev_dbg(dev
, "trying to match to %s\n", drv
->name
);
900 if (pcmcia_devmatch(p_dev
, &dynid
->id
)) {
901 dev_dbg(dev
, "matched to %s\n", drv
->name
);
902 mutex_unlock(&p_drv
->dynids
.lock
);
906 mutex_unlock(&p_drv
->dynids
.lock
);
908 while (did
&& did
->match_flags
) {
909 dev_dbg(dev
, "trying to match to %s\n", drv
->name
);
910 if (pcmcia_devmatch(p_dev
, did
)) {
911 dev_dbg(dev
, "matched to %s\n", drv
->name
);
920 #ifdef CONFIG_HOTPLUG
922 static int pcmcia_bus_uevent(struct device
*dev
, struct kobj_uevent_env
*env
)
924 struct pcmcia_device
*p_dev
;
926 u32 hash
[4] = { 0, 0, 0, 0};
931 p_dev
= to_pcmcia_dev(dev
);
933 /* calculate hashes */
934 for (i
= 0; i
< 4; i
++) {
935 if (!p_dev
->prod_id
[i
])
937 hash
[i
] = crc32(0, p_dev
->prod_id
[i
], strlen(p_dev
->prod_id
[i
]));
940 if (add_uevent_var(env
, "SOCKET_NO=%u", p_dev
->socket
->sock
))
943 if (add_uevent_var(env
, "DEVICE_NO=%02X", p_dev
->device_no
))
946 if (add_uevent_var(env
, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
947 "pa%08Xpb%08Xpc%08Xpd%08X",
948 p_dev
->has_manf_id
? p_dev
->manf_id
: 0,
949 p_dev
->has_card_id
? p_dev
->card_id
: 0,
950 p_dev
->has_func_id
? p_dev
->func_id
: 0,
964 static int pcmcia_bus_uevent(struct device
*dev
, struct kobj_uevent_env
*env
)
971 /************************ runtime PM support ***************************/
973 static int pcmcia_dev_suspend(struct device
*dev
, pm_message_t state
);
974 static int pcmcia_dev_resume(struct device
*dev
);
976 static int runtime_suspend(struct device
*dev
)
981 rc
= pcmcia_dev_suspend(dev
, PMSG_SUSPEND
);
986 static int runtime_resume(struct device
*dev
)
991 rc
= pcmcia_dev_resume(dev
);
996 /************************ per-device sysfs output ***************************/
998 #define pcmcia_device_attr(field, test, format) \
999 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1001 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1002 return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \
1005 #define pcmcia_device_stringattr(name, field) \
1006 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
1008 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \
1009 return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \
1012 pcmcia_device_attr(func
, socket
, "0x%02x\n");
1013 pcmcia_device_attr(func_id
, has_func_id
, "0x%02x\n");
1014 pcmcia_device_attr(manf_id
, has_manf_id
, "0x%04x\n");
1015 pcmcia_device_attr(card_id
, has_card_id
, "0x%04x\n");
1016 pcmcia_device_stringattr(prod_id1
, prod_id
[0]);
1017 pcmcia_device_stringattr(prod_id2
, prod_id
[1]);
1018 pcmcia_device_stringattr(prod_id3
, prod_id
[2]);
1019 pcmcia_device_stringattr(prod_id4
, prod_id
[3]);
1021 static ssize_t
pcmcia_show_resources(struct device
*dev
,
1022 struct device_attribute
*attr
, char *buf
)
1024 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1028 for (i
= 0; i
< PCMCIA_NUM_RESOURCES
; i
++)
1029 str
+= sprintf(str
, "%pr\n", p_dev
->resource
[i
]);
1034 static ssize_t
pcmcia_show_pm_state(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1036 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1038 if (p_dev
->suspended
)
1039 return sprintf(buf
, "off\n");
1041 return sprintf(buf
, "on\n");
1044 static ssize_t
pcmcia_store_pm_state(struct device
*dev
, struct device_attribute
*attr
,
1045 const char *buf
, size_t count
)
1047 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1053 if ((!p_dev
->suspended
) && !strncmp(buf
, "off", 3))
1054 ret
= runtime_suspend(dev
);
1055 else if (p_dev
->suspended
&& !strncmp(buf
, "on", 2))
1056 ret
= runtime_resume(dev
);
1058 return ret
? ret
: count
;
1062 static ssize_t
modalias_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1064 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1066 u32 hash
[4] = { 0, 0, 0, 0};
1068 /* calculate hashes */
1069 for (i
= 0; i
< 4; i
++) {
1070 if (!p_dev
->prod_id
[i
])
1072 hash
[i
] = crc32(0, p_dev
->prod_id
[i
],
1073 strlen(p_dev
->prod_id
[i
]));
1075 return sprintf(buf
, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
1076 "pa%08Xpb%08Xpc%08Xpd%08X\n",
1077 p_dev
->has_manf_id
? p_dev
->manf_id
: 0,
1078 p_dev
->has_card_id
? p_dev
->card_id
: 0,
1079 p_dev
->has_func_id
? p_dev
->func_id
: 0,
1080 p_dev
->func
, p_dev
->device_no
,
1081 hash
[0], hash
[1], hash
[2], hash
[3]);
1084 static ssize_t
pcmcia_store_allow_func_id_match(struct device
*dev
,
1085 struct device_attribute
*attr
, const char *buf
, size_t count
)
1087 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1092 mutex_lock(&p_dev
->socket
->ops_mutex
);
1093 p_dev
->allow_func_id_match
= 1;
1094 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1095 pcmcia_parse_uevents(p_dev
->socket
, PCMCIA_UEVENT_REQUERY
);
1100 static struct device_attribute pcmcia_dev_attrs
[] = {
1101 __ATTR(function
, 0444, func_show
, NULL
),
1102 __ATTR(pm_state
, 0644, pcmcia_show_pm_state
, pcmcia_store_pm_state
),
1103 __ATTR(resources
, 0444, pcmcia_show_resources
, NULL
),
1107 __ATTR_RO(prod_id1
),
1108 __ATTR_RO(prod_id2
),
1109 __ATTR_RO(prod_id3
),
1110 __ATTR_RO(prod_id4
),
1111 __ATTR_RO(modalias
),
1112 __ATTR(allow_func_id_match
, 0200, NULL
, pcmcia_store_allow_func_id_match
),
1116 /* PM support, also needed for reset */
1118 static int pcmcia_dev_suspend(struct device
*dev
, pm_message_t state
)
1120 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1121 struct pcmcia_driver
*p_drv
= NULL
;
1124 mutex_lock(&p_dev
->socket
->ops_mutex
);
1125 if (p_dev
->suspended
) {
1126 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1129 p_dev
->suspended
= 1;
1130 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1132 dev_dbg(dev
, "suspending\n");
1135 p_drv
= to_pcmcia_drv(dev
->driver
);
1140 if (p_drv
->suspend
) {
1141 ret
= p_drv
->suspend(p_dev
);
1143 dev_printk(KERN_ERR
, dev
,
1144 "pcmcia: device %s (driver %s) did "
1145 "not want to go to sleep (%d)\n",
1146 p_dev
->devname
, p_drv
->name
, ret
);
1147 mutex_lock(&p_dev
->socket
->ops_mutex
);
1148 p_dev
->suspended
= 0;
1149 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1154 if (p_dev
->device_no
== p_dev
->func
) {
1155 dev_dbg(dev
, "releasing configuration\n");
1156 pcmcia_release_configuration(p_dev
);
1164 static int pcmcia_dev_resume(struct device
*dev
)
1166 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1167 struct pcmcia_driver
*p_drv
= NULL
;
1170 mutex_lock(&p_dev
->socket
->ops_mutex
);
1171 if (!p_dev
->suspended
) {
1172 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1175 p_dev
->suspended
= 0;
1176 mutex_unlock(&p_dev
->socket
->ops_mutex
);
1178 dev_dbg(dev
, "resuming\n");
1181 p_drv
= to_pcmcia_drv(dev
->driver
);
1186 if (p_dev
->device_no
== p_dev
->func
) {
1187 dev_dbg(dev
, "requesting configuration\n");
1188 ret
= pcmcia_enable_device(p_dev
);
1194 ret
= p_drv
->resume(p_dev
);
1201 static int pcmcia_bus_suspend_callback(struct device
*dev
, void * _data
)
1203 struct pcmcia_socket
*skt
= _data
;
1204 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1206 if (p_dev
->socket
!= skt
|| p_dev
->suspended
)
1209 return runtime_suspend(dev
);
1212 static int pcmcia_bus_resume_callback(struct device
*dev
, void * _data
)
1214 struct pcmcia_socket
*skt
= _data
;
1215 struct pcmcia_device
*p_dev
= to_pcmcia_dev(dev
);
1217 if (p_dev
->socket
!= skt
|| !p_dev
->suspended
)
1220 runtime_resume(dev
);
1225 static int pcmcia_bus_resume(struct pcmcia_socket
*skt
)
1227 dev_dbg(&skt
->dev
, "resuming socket %d\n", skt
->sock
);
1228 bus_for_each_dev(&pcmcia_bus_type
, NULL
, skt
, pcmcia_bus_resume_callback
);
1232 static int pcmcia_bus_suspend(struct pcmcia_socket
*skt
)
1234 dev_dbg(&skt
->dev
, "suspending socket %d\n", skt
->sock
);
1235 if (bus_for_each_dev(&pcmcia_bus_type
, NULL
, skt
,
1236 pcmcia_bus_suspend_callback
)) {
1237 pcmcia_bus_resume(skt
);
1243 static int pcmcia_bus_remove(struct pcmcia_socket
*skt
)
1245 atomic_set(&skt
->present
, 0);
1246 pcmcia_card_remove(skt
, NULL
);
1248 mutex_lock(&skt
->ops_mutex
);
1249 destroy_cis_cache(skt
);
1250 pcmcia_cleanup_irq(skt
);
1251 mutex_unlock(&skt
->ops_mutex
);
1256 static int pcmcia_bus_add(struct pcmcia_socket
*skt
)
1258 atomic_set(&skt
->present
, 1);
1260 mutex_lock(&skt
->ops_mutex
);
1261 skt
->pcmcia_pfc
= 0;
1262 destroy_cis_cache(skt
); /* to be on the safe side... */
1263 mutex_unlock(&skt
->ops_mutex
);
1265 pcmcia_card_add(skt
);
1270 static int pcmcia_bus_early_resume(struct pcmcia_socket
*skt
)
1272 if (!verify_cis_cache(skt
)) {
1273 pcmcia_put_socket(skt
);
1277 dev_dbg(&skt
->dev
, "cis mismatch - different card\n");
1279 /* first, remove the card */
1280 pcmcia_bus_remove(skt
);
1282 mutex_lock(&skt
->ops_mutex
);
1283 destroy_cis_cache(skt
);
1284 kfree(skt
->fake_cis
);
1285 skt
->fake_cis
= NULL
;
1287 mutex_unlock(&skt
->ops_mutex
);
1289 /* now, add the new card */
1290 pcmcia_bus_add(skt
);
1296 * NOTE: This is racy. There's no guarantee the card will still be
1297 * physically present, even if the call to this function returns
1298 * non-NULL. Furthermore, the device driver most likely is unbound
1299 * almost immediately, so the timeframe where pcmcia_dev_present
1300 * returns NULL is probably really really small.
1302 struct pcmcia_device
*pcmcia_dev_present(struct pcmcia_device
*_p_dev
)
1304 struct pcmcia_device
*p_dev
;
1305 struct pcmcia_device
*ret
= NULL
;
1307 p_dev
= pcmcia_get_dev(_p_dev
);
1311 if (atomic_read(&p_dev
->socket
->present
) != 0)
1314 pcmcia_put_dev(p_dev
);
1317 EXPORT_SYMBOL(pcmcia_dev_present
);
1320 static struct pcmcia_callback pcmcia_bus_callback
= {
1321 .owner
= THIS_MODULE
,
1322 .add
= pcmcia_bus_add
,
1323 .remove
= pcmcia_bus_remove
,
1324 .requery
= pcmcia_requery
,
1325 .validate
= pccard_validate_cis
,
1326 .suspend
= pcmcia_bus_suspend
,
1327 .early_resume
= pcmcia_bus_early_resume
,
1328 .resume
= pcmcia_bus_resume
,
1331 static int __devinit
pcmcia_bus_add_socket(struct device
*dev
,
1332 struct class_interface
*class_intf
)
1334 struct pcmcia_socket
*socket
= dev_get_drvdata(dev
);
1337 socket
= pcmcia_get_socket(socket
);
1339 dev_printk(KERN_ERR
, dev
,
1340 "PCMCIA obtaining reference to socket failed\n");
1344 ret
= sysfs_create_bin_file(&dev
->kobj
, &pccard_cis_attr
);
1346 dev_printk(KERN_ERR
, dev
, "PCMCIA registration failed\n");
1347 pcmcia_put_socket(socket
);
1351 INIT_LIST_HEAD(&socket
->devices_list
);
1352 socket
->pcmcia_pfc
= 0;
1353 socket
->device_count
= 0;
1354 atomic_set(&socket
->present
, 0);
1356 ret
= pccard_register_pcmcia(socket
, &pcmcia_bus_callback
);
1358 dev_printk(KERN_ERR
, dev
, "PCMCIA registration failed\n");
1359 pcmcia_put_socket(socket
);
1366 static void pcmcia_bus_remove_socket(struct device
*dev
,
1367 struct class_interface
*class_intf
)
1369 struct pcmcia_socket
*socket
= dev_get_drvdata(dev
);
1374 pccard_register_pcmcia(socket
, NULL
);
1376 /* unregister any unbound devices */
1377 mutex_lock(&socket
->skt_mutex
);
1378 pcmcia_card_remove(socket
, NULL
);
1379 release_cis_mem(socket
);
1380 mutex_unlock(&socket
->skt_mutex
);
1382 sysfs_remove_bin_file(&dev
->kobj
, &pccard_cis_attr
);
1384 pcmcia_put_socket(socket
);
1390 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1391 static struct class_interface pcmcia_bus_interface __refdata
= {
1392 .class = &pcmcia_socket_class
,
1393 .add_dev
= &pcmcia_bus_add_socket
,
1394 .remove_dev
= &pcmcia_bus_remove_socket
,
1398 struct bus_type pcmcia_bus_type
= {
1400 .uevent
= pcmcia_bus_uevent
,
1401 .match
= pcmcia_bus_match
,
1402 .dev_attrs
= pcmcia_dev_attrs
,
1403 .probe
= pcmcia_device_probe
,
1404 .remove
= pcmcia_device_remove
,
1405 .suspend
= pcmcia_dev_suspend
,
1406 .resume
= pcmcia_dev_resume
,
1410 static int __init
init_pcmcia_bus(void)
1414 ret
= bus_register(&pcmcia_bus_type
);
1416 printk(KERN_WARNING
"pcmcia: bus_register error: %d\n", ret
);
1419 ret
= class_interface_register(&pcmcia_bus_interface
);
1422 "pcmcia: class_interface_register error: %d\n", ret
);
1423 bus_unregister(&pcmcia_bus_type
);
1429 fs_initcall(init_pcmcia_bus
); /* one level after subsys_initcall so that
1430 * pcmcia_socket_class is already registered */
1433 static void __exit
exit_pcmcia_bus(void)
1435 class_interface_unregister(&pcmcia_bus_interface
);
1437 bus_unregister(&pcmcia_bus_type
);
1439 module_exit(exit_pcmcia_bus
);