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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * ds.c -- 16-bit PCMCIA core support | |
3 | * | |
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. | |
7 | * | |
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. | |
11 | * | |
12 | * (C) 1999 David A. Hinds | |
7b24e798 | 13 | * (C) 2003 - 2010 Dominik Brodowski |
1da177e4 LT |
14 | */ |
15 | ||
3b659fb8 | 16 | #include <linux/kernel.h> |
1da177e4 | 17 | #include <linux/module.h> |
1da177e4 | 18 | #include <linux/init.h> |
1da177e4 | 19 | #include <linux/errno.h> |
1da177e4 LT |
20 | #include <linux/list.h> |
21 | #include <linux/delay.h> | |
1da177e4 | 22 | #include <linux/workqueue.h> |
840c2ac5 | 23 | #include <linux/crc32.h> |
daa9517d | 24 | #include <linux/firmware.h> |
360b65b9 | 25 | #include <linux/kref.h> |
43d9f7fd | 26 | #include <linux/dma-mapping.h> |
5a0e3ad6 | 27 | #include <linux/slab.h> |
1da177e4 | 28 | |
1da177e4 LT |
29 | #include <pcmcia/cs_types.h> |
30 | #include <pcmcia/cs.h> | |
1da177e4 LT |
31 | #include <pcmcia/cistpl.h> |
32 | #include <pcmcia/ds.h> | |
33 | #include <pcmcia/ss.h> | |
34 | ||
35 | #include "cs_internal.h" | |
36 | ||
37 | /*====================================================================*/ | |
38 | ||
39 | /* Module parameters */ | |
40 | ||
41 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
42 | MODULE_DESCRIPTION("PCMCIA Driver Services"); | |
43 | MODULE_LICENSE("GPL"); | |
44 | ||
1da177e4 | 45 | |
1da177e4 LT |
46 | /*====================================================================*/ |
47 | ||
23a83bfe DB |
48 | static void pcmcia_check_driver(struct pcmcia_driver *p_drv) |
49 | { | |
50 | struct pcmcia_device_id *did = p_drv->id_table; | |
51 | unsigned int i; | |
52 | u32 hash; | |
53 | ||
f8cfa618 | 54 | if (!p_drv->probe || !p_drv->remove) |
ba5bb6b5 PR |
55 | printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback " |
56 | "function\n", p_drv->drv.name); | |
1e212f36 | 57 | |
23a83bfe | 58 | while (did && did->match_flags) { |
9fea84f4 | 59 | for (i = 0; i < 4; i++) { |
23a83bfe DB |
60 | if (!did->prod_id[i]) |
61 | continue; | |
62 | ||
63 | hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i])); | |
64 | if (hash == did->prod_id_hash[i]) | |
65 | continue; | |
66 | ||
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); | |
5085cb26 DB |
71 | printk(KERN_DEBUG "pcmcia: see " |
72 | "Documentation/pcmcia/devicetable.txt for " | |
73 | "details\n"); | |
23a83bfe DB |
74 | } |
75 | did++; | |
76 | } | |
77 | ||
78 | return; | |
79 | } | |
80 | ||
daa9517d | 81 | |
1da177e4 LT |
82 | /*======================================================================*/ |
83 | ||
1da177e4 | 84 | |
6179b556 BW |
85 | struct pcmcia_dynid { |
86 | struct list_head node; | |
87 | struct pcmcia_device_id id; | |
88 | }; | |
89 | ||
90 | /** | |
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 | |
94 | * @count: input size | |
95 | * | |
96 | * Adds a new dynamic PCMCIA device ID to this driver, | |
97 | * and causes the driver to probe for all devices again. | |
98 | */ | |
99 | static ssize_t | |
100 | pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count) | |
101 | { | |
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}; | |
9fea84f4 | 107 | int fields = 0; |
6179b556 BW |
108 | int retval = 0; |
109 | ||
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]); | |
113 | if (fields < 6) | |
114 | return -EINVAL; | |
115 | ||
116 | dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL); | |
117 | if (!dynid) | |
118 | return -ENOMEM; | |
119 | ||
6179b556 BW |
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); | |
127 | ||
3f565232 | 128 | mutex_lock(&pdrv->dynids.lock); |
b4b3d7bb | 129 | list_add_tail(&dynid->node, &pdrv->dynids.list); |
3f565232 | 130 | mutex_unlock(&pdrv->dynids.lock); |
6179b556 BW |
131 | |
132 | if (get_driver(&pdrv->drv)) { | |
133 | retval = driver_attach(&pdrv->drv); | |
134 | put_driver(&pdrv->drv); | |
135 | } | |
136 | ||
137 | if (retval) | |
138 | return retval; | |
139 | return count; | |
140 | } | |
141 | static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id); | |
142 | ||
143 | static void | |
144 | pcmcia_free_dynids(struct pcmcia_driver *drv) | |
145 | { | |
146 | struct pcmcia_dynid *dynid, *n; | |
147 | ||
3f565232 | 148 | mutex_lock(&drv->dynids.lock); |
6179b556 BW |
149 | list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { |
150 | list_del(&dynid->node); | |
151 | kfree(dynid); | |
152 | } | |
3f565232 | 153 | mutex_unlock(&drv->dynids.lock); |
6179b556 BW |
154 | } |
155 | ||
156 | static int | |
157 | pcmcia_create_newid_file(struct pcmcia_driver *drv) | |
158 | { | |
159 | int error = 0; | |
160 | if (drv->probe != NULL) | |
2344c6de | 161 | error = driver_create_file(&drv->drv, &driver_attr_new_id); |
6179b556 BW |
162 | return error; |
163 | } | |
164 | ||
165 | ||
1da177e4 LT |
166 | /** |
167 | * pcmcia_register_driver - register a PCMCIA driver with the bus core | |
78187865 | 168 | * @driver: the &driver being registered |
1da177e4 LT |
169 | * |
170 | * Registers a PCMCIA driver with the PCMCIA bus core. | |
171 | */ | |
1da177e4 LT |
172 | int pcmcia_register_driver(struct pcmcia_driver *driver) |
173 | { | |
6179b556 BW |
174 | int error; |
175 | ||
1da177e4 LT |
176 | if (!driver) |
177 | return -EINVAL; | |
178 | ||
23a83bfe DB |
179 | pcmcia_check_driver(driver); |
180 | ||
1da177e4 LT |
181 | /* initialize common fields */ |
182 | driver->drv.bus = &pcmcia_bus_type; | |
183 | driver->drv.owner = driver->owner; | |
3f565232 | 184 | mutex_init(&driver->dynids.lock); |
6179b556 | 185 | INIT_LIST_HEAD(&driver->dynids.list); |
1da177e4 | 186 | |
d50dbec3 | 187 | pr_debug("registering driver %s\n", driver->drv.name); |
d9d9ea01 | 188 | |
6179b556 BW |
189 | error = driver_register(&driver->drv); |
190 | if (error < 0) | |
191 | return error; | |
192 | ||
193 | error = pcmcia_create_newid_file(driver); | |
194 | if (error) | |
195 | driver_unregister(&driver->drv); | |
196 | ||
197 | return error; | |
1da177e4 LT |
198 | } |
199 | EXPORT_SYMBOL(pcmcia_register_driver); | |
200 | ||
201 | /** | |
202 | * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core | |
78187865 | 203 | * @driver: the &driver being unregistered |
1da177e4 LT |
204 | */ |
205 | void pcmcia_unregister_driver(struct pcmcia_driver *driver) | |
206 | { | |
d50dbec3 | 207 | pr_debug("unregistering driver %s\n", driver->drv.name); |
1da177e4 | 208 | driver_unregister(&driver->drv); |
6179b556 | 209 | pcmcia_free_dynids(driver); |
1da177e4 LT |
210 | } |
211 | EXPORT_SYMBOL(pcmcia_unregister_driver); | |
212 | ||
1da177e4 LT |
213 | |
214 | /* pcmcia_device handling */ | |
215 | ||
5716d415 | 216 | static struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev) |
1da177e4 LT |
217 | { |
218 | struct device *tmp_dev; | |
219 | tmp_dev = get_device(&p_dev->dev); | |
220 | if (!tmp_dev) | |
221 | return NULL; | |
222 | return to_pcmcia_dev(tmp_dev); | |
223 | } | |
224 | ||
5716d415 | 225 | static void pcmcia_put_dev(struct pcmcia_device *p_dev) |
1da177e4 LT |
226 | { |
227 | if (p_dev) | |
228 | put_device(&p_dev->dev); | |
229 | } | |
230 | ||
360b65b9 DB |
231 | static void pcmcia_release_function(struct kref *ref) |
232 | { | |
233 | struct config_t *c = container_of(ref, struct config_t, ref); | |
d50dbec3 | 234 | pr_debug("releasing config_t\n"); |
360b65b9 DB |
235 | kfree(c); |
236 | } | |
237 | ||
1da177e4 LT |
238 | static void pcmcia_release_dev(struct device *dev) |
239 | { | |
240 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
44961a03 | 241 | int i; |
d50dbec3 | 242 | dev_dbg(dev, "releasing device\n"); |
dc109497 | 243 | pcmcia_put_socket(p_dev->socket); |
44961a03 DB |
244 | for (i = 0; i < 4; i++) |
245 | kfree(p_dev->prod_id[i]); | |
bd65a685 | 246 | kfree(p_dev->devname); |
360b65b9 | 247 | kref_put(&p_dev->function_config->ref, pcmcia_release_function); |
1da177e4 LT |
248 | kfree(p_dev); |
249 | } | |
250 | ||
251 | ||
9fea84f4 | 252 | static int pcmcia_device_probe(struct device *dev) |
1da177e4 LT |
253 | { |
254 | struct pcmcia_device *p_dev; | |
255 | struct pcmcia_driver *p_drv; | |
f8cfa618 | 256 | struct pcmcia_socket *s; |
af2b3b50 | 257 | cistpl_config_t cis_config; |
1da177e4 LT |
258 | int ret = 0; |
259 | ||
260 | dev = get_device(dev); | |
261 | if (!dev) | |
262 | return -ENODEV; | |
263 | ||
264 | p_dev = to_pcmcia_dev(dev); | |
265 | p_drv = to_pcmcia_drv(dev->driver); | |
f8cfa618 | 266 | s = p_dev->socket; |
1da177e4 | 267 | |
d50dbec3 | 268 | dev_dbg(dev, "trying to bind to %s\n", p_drv->drv.name); |
d9d9ea01 | 269 | |
360b65b9 DB |
270 | if ((!p_drv->probe) || (!p_dev->function_config) || |
271 | (!try_module_get(p_drv->owner))) { | |
1da177e4 LT |
272 | ret = -EINVAL; |
273 | goto put_dev; | |
274 | } | |
275 | ||
af2b3b50 DB |
276 | /* set up some more device information */ |
277 | ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG, | |
278 | &cis_config); | |
279 | if (!ret) { | |
280 | p_dev->conf.ConfigBase = cis_config.base; | |
281 | p_dev->conf.Present = cis_config.rmask[0]; | |
282 | } else { | |
ac449d6e DB |
283 | dev_printk(KERN_INFO, dev, |
284 | "pcmcia: could not parse base and rmask0 of CIS\n"); | |
af2b3b50 DB |
285 | p_dev->conf.ConfigBase = 0; |
286 | p_dev->conf.Present = 0; | |
287 | } | |
288 | ||
f8cfa618 | 289 | ret = p_drv->probe(p_dev); |
d9d9ea01 | 290 | if (ret) { |
d50dbec3 | 291 | dev_dbg(dev, "binding to %s failed with %d\n", |
ac449d6e | 292 | p_drv->drv.name, ret); |
82d56e6d | 293 | goto put_module; |
d9d9ea01 | 294 | } |
82d56e6d | 295 | |
00ce99ff | 296 | mutex_lock(&s->ops_mutex); |
aa584ca4 | 297 | if ((s->pcmcia_state.has_pfc) && |
82d56e6d | 298 | (p_dev->socket->device_count == 1) && (p_dev->device_no == 0)) |
aa584ca4 | 299 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); |
00ce99ff | 300 | mutex_unlock(&s->ops_mutex); |
f8cfa618 | 301 | |
cec5eb7b | 302 | put_module: |
1da177e4 LT |
303 | if (ret) |
304 | module_put(p_drv->owner); | |
cec5eb7b | 305 | put_dev: |
f8cfa618 | 306 | if (ret) |
1da177e4 | 307 | put_device(dev); |
9fea84f4 | 308 | return ret; |
1da177e4 LT |
309 | } |
310 | ||
311 | ||
d6ff5a85 DB |
312 | /* |
313 | * Removes a PCMCIA card from the device tree and socket list. | |
314 | */ | |
315 | static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover) | |
316 | { | |
317 | struct pcmcia_device *p_dev; | |
318 | struct pcmcia_device *tmp; | |
d6ff5a85 | 319 | |
d50dbec3 | 320 | dev_dbg(leftover ? &leftover->dev : &s->dev, |
ac449d6e DB |
321 | "pcmcia_card_remove(%d) %s\n", s->sock, |
322 | leftover ? leftover->devname : ""); | |
d6ff5a85 | 323 | |
00ce99ff | 324 | mutex_lock(&s->ops_mutex); |
d6ff5a85 DB |
325 | if (!leftover) |
326 | s->device_count = 0; | |
327 | else | |
328 | s->device_count = 1; | |
00ce99ff | 329 | mutex_unlock(&s->ops_mutex); |
d6ff5a85 DB |
330 | |
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) | |
334 | continue; | |
335 | ||
00ce99ff | 336 | mutex_lock(&s->ops_mutex); |
d6ff5a85 | 337 | list_del(&p_dev->socket_device_list); |
00ce99ff | 338 | mutex_unlock(&s->ops_mutex); |
d6ff5a85 | 339 | |
d50dbec3 | 340 | dev_dbg(&p_dev->dev, "unregistering device\n"); |
d6ff5a85 DB |
341 | device_unregister(&p_dev->dev); |
342 | } | |
343 | ||
344 | return; | |
345 | } | |
346 | ||
9fea84f4 | 347 | static int pcmcia_device_remove(struct device *dev) |
1da177e4 LT |
348 | { |
349 | struct pcmcia_device *p_dev; | |
350 | struct pcmcia_driver *p_drv; | |
cc3b4866 | 351 | int i; |
1da177e4 | 352 | |
1da177e4 LT |
353 | p_dev = to_pcmcia_dev(dev); |
354 | p_drv = to_pcmcia_drv(dev->driver); | |
d6ff5a85 | 355 | |
d50dbec3 | 356 | dev_dbg(dev, "removing device\n"); |
d9d9ea01 | 357 | |
d6ff5a85 DB |
358 | /* If we're removing the primary module driving a |
359 | * pseudo multi-function card, we need to unbind | |
360 | * all devices | |
361 | */ | |
aa584ca4 | 362 | if ((p_dev->socket->pcmcia_state.has_pfc) && |
e6e4f397 | 363 | (p_dev->socket->device_count > 0) && |
d6ff5a85 DB |
364 | (p_dev->device_no == 0)) |
365 | pcmcia_card_remove(p_dev->socket, p_dev); | |
366 | ||
367 | /* detach the "instance" */ | |
f3990715 DB |
368 | if (!p_drv) |
369 | return 0; | |
1da177e4 | 370 | |
f3990715 | 371 | if (p_drv->remove) |
9fea84f4 | 372 | p_drv->remove(p_dev); |
cc3b4866 | 373 | |
f3990715 | 374 | /* check for proper unloading */ |
e2d40963 | 375 | if (p_dev->_irq || p_dev->_io || p_dev->_locked) |
ac449d6e DB |
376 | dev_printk(KERN_INFO, dev, |
377 | "pcmcia: driver %s did not release config properly\n", | |
378 | p_drv->drv.name); | |
cc3b4866 | 379 | |
f3990715 | 380 | for (i = 0; i < MAX_WIN; i++) |
e2d40963 | 381 | if (p_dev->_win & CLIENT_WIN_REQ(i)) |
ac449d6e DB |
382 | dev_printk(KERN_INFO, dev, |
383 | "pcmcia: driver %s did not release window properly\n", | |
384 | p_drv->drv.name); | |
cc3b4866 | 385 | |
f3990715 DB |
386 | /* references from pcmcia_probe_device */ |
387 | pcmcia_put_dev(p_dev); | |
388 | module_put(p_drv->owner); | |
1da177e4 LT |
389 | |
390 | return 0; | |
391 | } | |
392 | ||
393 | ||
1da177e4 LT |
394 | /* |
395 | * pcmcia_device_query -- determine information about a pcmcia device | |
396 | */ | |
397 | static int pcmcia_device_query(struct pcmcia_device *p_dev) | |
398 | { | |
399 | cistpl_manfid_t manf_id; | |
400 | cistpl_funcid_t func_id; | |
76fa82fb | 401 | cistpl_vers_1_t *vers1; |
1da177e4 LT |
402 | unsigned int i; |
403 | ||
76fa82fb IM |
404 | vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL); |
405 | if (!vers1) | |
406 | return -ENOMEM; | |
407 | ||
84897fc0 | 408 | if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, |
1da177e4 | 409 | CISTPL_MANFID, &manf_id)) { |
af461fc1 | 410 | mutex_lock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
411 | p_dev->manf_id = manf_id.manf; |
412 | p_dev->card_id = manf_id.card; | |
413 | p_dev->has_manf_id = 1; | |
414 | p_dev->has_card_id = 1; | |
af461fc1 | 415 | mutex_unlock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
416 | } |
417 | ||
418 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
419 | CISTPL_FUNCID, &func_id)) { | |
af461fc1 | 420 | mutex_lock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
421 | p_dev->func_id = func_id.func; |
422 | p_dev->has_func_id = 1; | |
af461fc1 | 423 | mutex_unlock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
424 | } else { |
425 | /* rule of thumb: cards with no FUNCID, but with | |
426 | * common memory device geometry information, are | |
427 | * probably memory cards (from pcmcia-cs) */ | |
76fa82fb IM |
428 | cistpl_device_geo_t *devgeo; |
429 | ||
430 | devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL); | |
431 | if (!devgeo) { | |
432 | kfree(vers1); | |
433 | return -ENOMEM; | |
434 | } | |
1da177e4 | 435 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, |
76fa82fb | 436 | CISTPL_DEVICE_GEO, devgeo)) { |
d50dbec3 | 437 | dev_dbg(&p_dev->dev, |
ac449d6e DB |
438 | "mem device geometry probably means " |
439 | "FUNCID_MEMORY\n"); | |
af461fc1 | 440 | mutex_lock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
441 | p_dev->func_id = CISTPL_FUNCID_MEMORY; |
442 | p_dev->has_func_id = 1; | |
af461fc1 | 443 | mutex_unlock(&p_dev->socket->ops_mutex); |
1da177e4 | 444 | } |
76fa82fb | 445 | kfree(devgeo); |
1da177e4 LT |
446 | } |
447 | ||
84897fc0 | 448 | if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1, |
76fa82fb | 449 | vers1)) { |
af461fc1 | 450 | mutex_lock(&p_dev->socket->ops_mutex); |
c5e09528 | 451 | for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) { |
1da177e4 LT |
452 | char *tmp; |
453 | unsigned int length; | |
44961a03 | 454 | char *new; |
1da177e4 | 455 | |
76fa82fb | 456 | tmp = vers1->str + vers1->ofs[i]; |
1da177e4 LT |
457 | |
458 | length = strlen(tmp) + 1; | |
6e3d4f25 | 459 | if ((length < 2) || (length > 255)) |
1da177e4 LT |
460 | continue; |
461 | ||
44961a03 DB |
462 | new = kmalloc(sizeof(char) * length, GFP_KERNEL); |
463 | if (!new) | |
1da177e4 LT |
464 | continue; |
465 | ||
44961a03 DB |
466 | new = strncpy(new, tmp, length); |
467 | ||
468 | tmp = p_dev->prod_id[i]; | |
469 | p_dev->prod_id[i] = new; | |
470 | kfree(tmp); | |
1da177e4 | 471 | } |
af461fc1 | 472 | mutex_unlock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
473 | } |
474 | ||
76fa82fb | 475 | kfree(vers1); |
1da177e4 LT |
476 | return 0; |
477 | } | |
478 | ||
479 | ||
5716d415 DB |
480 | static struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, |
481 | unsigned int function) | |
1da177e4 | 482 | { |
360b65b9 | 483 | struct pcmcia_device *p_dev, *tmp_dev; |
44961a03 | 484 | int i; |
1da177e4 | 485 | |
dc109497 | 486 | s = pcmcia_get_socket(s); |
1da177e4 LT |
487 | if (!s) |
488 | return NULL; | |
489 | ||
d50dbec3 | 490 | pr_debug("adding device to %d, function %d\n", s->sock, function); |
d9d9ea01 | 491 | |
8084b372 | 492 | p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); |
1da177e4 LT |
493 | if (!p_dev) |
494 | goto err_put; | |
1da177e4 | 495 | |
00ce99ff | 496 | mutex_lock(&s->ops_mutex); |
1da177e4 | 497 | p_dev->device_no = (s->device_count++); |
00ce99ff | 498 | mutex_unlock(&s->ops_mutex); |
e6e4f397 | 499 | |
7d7ba8d3 DB |
500 | /* max of 2 PFC devices */ |
501 | if ((p_dev->device_no >= 2) && (function == 0)) | |
502 | goto err_free; | |
503 | ||
504 | /* max of 4 devices overall */ | |
505 | if (p_dev->device_no >= 4) | |
e6e4f397 DB |
506 | goto err_free; |
507 | ||
508 | p_dev->socket = s; | |
1da177e4 LT |
509 | p_dev->func = function; |
510 | ||
511 | p_dev->dev.bus = &pcmcia_bus_type; | |
87373318 | 512 | p_dev->dev.parent = s->dev.parent; |
1da177e4 | 513 | p_dev->dev.release = pcmcia_release_dev; |
43d9f7fd JB |
514 | /* by default don't allow DMA */ |
515 | p_dev->dma_mask = DMA_MASK_NONE; | |
516 | p_dev->dev.dma_mask = &p_dev->dma_mask; | |
25096986 KS |
517 | dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no); |
518 | if (!dev_name(&p_dev->dev)) | |
519 | goto err_free; | |
520 | p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev)); | |
bd65a685 BG |
521 | if (!p_dev->devname) |
522 | goto err_free; | |
d50dbec3 | 523 | dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname); |
1da177e4 | 524 | |
00ce99ff | 525 | mutex_lock(&s->ops_mutex); |
360b65b9 DB |
526 | |
527 | /* | |
528 | * p_dev->function_config must be the same for all card functions. | |
a60f22c4 DB |
529 | * Note that this is serialized by ops_mutex, so that only one |
530 | * such struct will be created. | |
360b65b9 | 531 | */ |
9fea84f4 DB |
532 | list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list) |
533 | if (p_dev->func == tmp_dev->func) { | |
360b65b9 | 534 | p_dev->function_config = tmp_dev->function_config; |
3e879f61 K |
535 | p_dev->io = tmp_dev->io; |
536 | p_dev->irq = tmp_dev->irq; | |
360b65b9 DB |
537 | kref_get(&p_dev->function_config->ref); |
538 | } | |
539 | ||
540 | /* Add to the list in pcmcia_bus_socket */ | |
6171b88b | 541 | list_add(&p_dev->socket_device_list, &s->devices_list); |
360b65b9 | 542 | |
6f0f38c4 DB |
543 | if (pcmcia_setup_irq(p_dev)) |
544 | dev_warn(&p_dev->dev, | |
545 | "IRQ setup failed -- device might not work\n"); | |
1da177e4 | 546 | |
360b65b9 | 547 | if (!p_dev->function_config) { |
d50dbec3 | 548 | dev_dbg(&p_dev->dev, "creating config_t\n"); |
360b65b9 DB |
549 | p_dev->function_config = kzalloc(sizeof(struct config_t), |
550 | GFP_KERNEL); | |
6f0f38c4 DB |
551 | if (!p_dev->function_config) { |
552 | mutex_unlock(&s->ops_mutex); | |
360b65b9 | 553 | goto err_unreg; |
6f0f38c4 | 554 | } |
360b65b9 DB |
555 | kref_init(&p_dev->function_config->ref); |
556 | } | |
6f0f38c4 | 557 | mutex_unlock(&s->ops_mutex); |
360b65b9 | 558 | |
ac449d6e | 559 | dev_printk(KERN_NOTICE, &p_dev->dev, |
6f0f38c4 | 560 | "pcmcia: registering new device %s (IRQ: %d)\n", |
eb14120f | 561 | p_dev->devname, p_dev->irq); |
807277cb | 562 | |
1ad275e3 DB |
563 | pcmcia_device_query(p_dev); |
564 | ||
360b65b9 DB |
565 | if (device_register(&p_dev->dev)) |
566 | goto err_unreg; | |
1da177e4 | 567 | |
1da177e4 LT |
568 | return p_dev; |
569 | ||
360b65b9 | 570 | err_unreg: |
00ce99ff | 571 | mutex_lock(&s->ops_mutex); |
360b65b9 | 572 | list_del(&p_dev->socket_device_list); |
00ce99ff | 573 | mutex_unlock(&s->ops_mutex); |
360b65b9 | 574 | |
1da177e4 | 575 | err_free: |
00ce99ff | 576 | mutex_lock(&s->ops_mutex); |
e6e4f397 | 577 | s->device_count--; |
00ce99ff | 578 | mutex_unlock(&s->ops_mutex); |
e6e4f397 | 579 | |
44961a03 DB |
580 | for (i = 0; i < 4; i++) |
581 | kfree(p_dev->prod_id[i]); | |
bd65a685 | 582 | kfree(p_dev->devname); |
1da177e4 | 583 | kfree(p_dev); |
1da177e4 | 584 | err_put: |
dc109497 | 585 | pcmcia_put_socket(s); |
1da177e4 LT |
586 | |
587 | return NULL; | |
588 | } | |
589 | ||
590 | ||
591 | static int pcmcia_card_add(struct pcmcia_socket *s) | |
592 | { | |
1da177e4 | 593 | cistpl_longlink_mfc_t mfc; |
c5081d5f | 594 | unsigned int no_funcs, i, no_chains; |
cfe5d809 | 595 | int ret = -EAGAIN; |
1da177e4 | 596 | |
cfe5d809 | 597 | mutex_lock(&s->ops_mutex); |
d9d9ea01 | 598 | if (!(s->resource_setup_done)) { |
d50dbec3 | 599 | dev_dbg(&s->dev, |
ac449d6e | 600 | "no resources available, delaying card_add\n"); |
cfe5d809 | 601 | mutex_unlock(&s->ops_mutex); |
1da177e4 | 602 | return -EAGAIN; /* try again, but later... */ |
d9d9ea01 | 603 | } |
1da177e4 | 604 | |
d9d9ea01 | 605 | if (pcmcia_validate_mem(s)) { |
d50dbec3 | 606 | dev_dbg(&s->dev, "validating mem resources failed, " |
d9d9ea01 | 607 | "delaying card_add\n"); |
cfe5d809 | 608 | mutex_unlock(&s->ops_mutex); |
de75914e | 609 | return -EAGAIN; /* try again, but later... */ |
d9d9ea01 | 610 | } |
cfe5d809 | 611 | mutex_unlock(&s->ops_mutex); |
de75914e | 612 | |
84897fc0 | 613 | ret = pccard_validate_cis(s, &no_chains); |
c5081d5f | 614 | if (ret || !no_chains) { |
d50dbec3 | 615 | dev_dbg(&s->dev, "invalid CIS or invalid resources\n"); |
1da177e4 LT |
616 | return -ENODEV; |
617 | } | |
618 | ||
619 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) | |
620 | no_funcs = mfc.nfn; | |
621 | else | |
622 | no_funcs = 1; | |
1d2c9042 | 623 | s->functions = no_funcs; |
1da177e4 | 624 | |
9fea84f4 | 625 | for (i = 0; i < no_funcs; i++) |
dc109497 | 626 | pcmcia_device_add(s, i); |
1da177e4 | 627 | |
9fea84f4 | 628 | return ret; |
1da177e4 LT |
629 | } |
630 | ||
631 | ||
af461fc1 | 632 | static int pcmcia_requery_callback(struct device *dev, void * _data) |
ff1fa9ef | 633 | { |
e2f0b534 | 634 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
d9d9ea01 | 635 | if (!p_dev->dev.driver) { |
d50dbec3 | 636 | dev_dbg(dev, "update device information\n"); |
e2f0b534 | 637 | pcmcia_device_query(p_dev); |
d9d9ea01 | 638 | } |
e2f0b534 DB |
639 | |
640 | return 0; | |
641 | } | |
642 | ||
aa584ca4 | 643 | |
af461fc1 | 644 | static void pcmcia_requery(struct pcmcia_socket *s) |
e2f0b534 | 645 | { |
04de0816 | 646 | int has_pfc; |
4ae1cbf1 | 647 | |
af461fc1 DB |
648 | if (s->functions == 0) { |
649 | pcmcia_card_add(s); | |
650 | return; | |
e2f0b534 DB |
651 | } |
652 | ||
653 | /* some device information might have changed because of a CIS | |
654 | * update or because we can finally read it correctly... so | |
655 | * determine it again, overwriting old values if necessary. */ | |
af461fc1 DB |
656 | bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery_callback); |
657 | ||
658 | /* if the CIS changed, we need to check whether the number of | |
659 | * functions changed. */ | |
660 | if (s->fake_cis) { | |
661 | int old_funcs, new_funcs; | |
662 | cistpl_longlink_mfc_t mfc; | |
663 | ||
664 | /* does this cis override add or remove functions? */ | |
665 | old_funcs = s->functions; | |
666 | ||
667 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, | |
668 | &mfc)) | |
669 | new_funcs = mfc.nfn; | |
670 | else | |
671 | new_funcs = 1; | |
b1095afe DB |
672 | if (old_funcs != new_funcs) { |
673 | /* we need to re-start */ | |
af461fc1 | 674 | pcmcia_card_remove(s, NULL); |
b83156b5 | 675 | s->functions = 0; |
af461fc1 | 676 | pcmcia_card_add(s); |
af461fc1 DB |
677 | } |
678 | } | |
e2f0b534 | 679 | |
aa584ca4 DB |
680 | /* If the PCMCIA device consists of two pseudo devices, |
681 | * call pcmcia_device_add() -- which will fail if both | |
682 | * devices are already registered. */ | |
683 | mutex_lock(&s->ops_mutex); | |
684 | has_pfc = s->pcmcia_state.has_pfc; | |
685 | mutex_unlock(&s->ops_mutex); | |
686 | if (has_pfc) | |
687 | pcmcia_device_add(s, 0); | |
688 | ||
e2f0b534 DB |
689 | /* we re-scan all devices, not just the ones connected to this |
690 | * socket. This does not matter, though. */ | |
af461fc1 DB |
691 | if (bus_rescan_devices(&pcmcia_bus_type)) |
692 | dev_warn(&s->dev, "rescanning the bus failed\n"); | |
ff1fa9ef | 693 | } |
1ad275e3 | 694 | |
af461fc1 | 695 | |
1d2c9042 DB |
696 | #ifdef CONFIG_PCMCIA_LOAD_CIS |
697 | ||
698 | /** | |
699 | * pcmcia_load_firmware - load CIS from userspace if device-provided is broken | |
78187865 RD |
700 | * @dev: the pcmcia device which needs a CIS override |
701 | * @filename: requested filename in /lib/firmware/ | |
1d2c9042 DB |
702 | * |
703 | * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if | |
704 | * the one provided by the card is broken. The firmware files reside in | |
705 | * /lib/firmware/ in userspace. | |
706 | */ | |
707 | static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) | |
708 | { | |
709 | struct pcmcia_socket *s = dev->socket; | |
710 | const struct firmware *fw; | |
1d2c9042 | 711 | int ret = -ENOMEM; |
b1095afe DB |
712 | cistpl_longlink_mfc_t mfc; |
713 | int old_funcs, new_funcs = 1; | |
1d2c9042 DB |
714 | |
715 | if (!filename) | |
716 | return -EINVAL; | |
717 | ||
d50dbec3 | 718 | dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename); |
1d2c9042 | 719 | |
ed62acec | 720 | if (request_firmware(&fw, filename, &dev->dev) == 0) { |
d9d9ea01 DB |
721 | if (fw->size >= CISTPL_MAX_CIS_SIZE) { |
722 | ret = -EINVAL; | |
ac449d6e DB |
723 | dev_printk(KERN_ERR, &dev->dev, |
724 | "pcmcia: CIS override is too big\n"); | |
1d2c9042 | 725 | goto release; |
d9d9ea01 | 726 | } |
1d2c9042 | 727 | |
53efec95 | 728 | if (!pcmcia_replace_cis(s, fw->data, fw->size)) |
1d2c9042 | 729 | ret = 0; |
d9d9ea01 | 730 | else { |
ac449d6e DB |
731 | dev_printk(KERN_ERR, &dev->dev, |
732 | "pcmcia: CIS override failed\n"); | |
d9d9ea01 DB |
733 | goto release; |
734 | } | |
735 | ||
b1095afe DB |
736 | /* we need to re-start if the number of functions changed */ |
737 | old_funcs = s->functions; | |
738 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, | |
739 | &mfc)) | |
740 | new_funcs = mfc.nfn; | |
741 | ||
742 | if (old_funcs != new_funcs) | |
743 | ret = -EBUSY; | |
1d2c9042 DB |
744 | |
745 | /* update information */ | |
746 | pcmcia_device_query(dev); | |
747 | ||
aa584ca4 DB |
748 | /* requery (as number of functions might have changed) */ |
749 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); | |
1d2c9042 DB |
750 | } |
751 | release: | |
752 | release_firmware(fw); | |
753 | ||
9fea84f4 | 754 | return ret; |
1d2c9042 DB |
755 | } |
756 | ||
757 | #else /* !CONFIG_PCMCIA_LOAD_CIS */ | |
758 | ||
759 | static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) | |
760 | { | |
761 | return -ENODEV; | |
762 | } | |
763 | ||
764 | #endif | |
765 | ||
766 | ||
1ad275e3 DB |
767 | static inline int pcmcia_devmatch(struct pcmcia_device *dev, |
768 | struct pcmcia_device_id *did) | |
769 | { | |
770 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { | |
771 | if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) | |
772 | return 0; | |
773 | } | |
774 | ||
775 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { | |
776 | if ((!dev->has_card_id) || (dev->card_id != did->card_id)) | |
777 | return 0; | |
778 | } | |
779 | ||
780 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { | |
781 | if (dev->func != did->function) | |
782 | return 0; | |
783 | } | |
784 | ||
785 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { | |
786 | if (!dev->prod_id[0]) | |
787 | return 0; | |
788 | if (strcmp(did->prod_id[0], dev->prod_id[0])) | |
789 | return 0; | |
790 | } | |
791 | ||
792 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { | |
793 | if (!dev->prod_id[1]) | |
794 | return 0; | |
795 | if (strcmp(did->prod_id[1], dev->prod_id[1])) | |
796 | return 0; | |
797 | } | |
798 | ||
799 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { | |
800 | if (!dev->prod_id[2]) | |
801 | return 0; | |
802 | if (strcmp(did->prod_id[2], dev->prod_id[2])) | |
803 | return 0; | |
804 | } | |
805 | ||
806 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { | |
807 | if (!dev->prod_id[3]) | |
808 | return 0; | |
809 | if (strcmp(did->prod_id[3], dev->prod_id[3])) | |
810 | return 0; | |
811 | } | |
812 | ||
813 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { | |
83bf6f11 | 814 | dev_dbg(&dev->dev, "this is a pseudo-multi-function device\n"); |
aa584ca4 DB |
815 | mutex_lock(&dev->socket->ops_mutex); |
816 | dev->socket->pcmcia_state.has_pfc = 1; | |
817 | mutex_unlock(&dev->socket->ops_mutex); | |
83bf6f11 AK |
818 | if (dev->device_no != did->device_no) |
819 | return 0; | |
1ad275e3 DB |
820 | } |
821 | ||
822 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { | |
94a819f8 DB |
823 | int ret; |
824 | ||
1ad275e3 DB |
825 | if ((!dev->has_func_id) || (dev->func_id != did->func_id)) |
826 | return 0; | |
827 | ||
828 | /* if this is a pseudo-multi-function device, | |
829 | * we need explicit matches */ | |
83bf6f11 | 830 | if (dev->socket->pcmcia_state.has_pfc) |
1ad275e3 DB |
831 | return 0; |
832 | if (dev->device_no) | |
833 | return 0; | |
834 | ||
835 | /* also, FUNC_ID matching needs to be activated by userspace | |
836 | * after it has re-checked that there is no possible module | |
837 | * with a prod_id/manf_id/card_id match. | |
838 | */ | |
94a819f8 DB |
839 | mutex_lock(&dev->socket->ops_mutex); |
840 | ret = dev->allow_func_id_match; | |
841 | mutex_unlock(&dev->socket->ops_mutex); | |
842 | ||
843 | if (!ret) { | |
844 | dev_dbg(&dev->dev, | |
845 | "skipping FUNC_ID match until userspace ACK\n"); | |
1ad275e3 | 846 | return 0; |
94a819f8 | 847 | } |
1ad275e3 DB |
848 | } |
849 | ||
ea7b3882 | 850 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { |
d50dbec3 | 851 | dev_dbg(&dev->dev, "device needs a fake CIS\n"); |
daa9517d | 852 | if (!dev->socket->fake_cis) |
b1095afe DB |
853 | if (pcmcia_load_firmware(dev, did->cisfile)) |
854 | return 0; | |
ea7b3882 DB |
855 | } |
856 | ||
f602ff7e DB |
857 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { |
858 | int i; | |
9fea84f4 | 859 | for (i = 0; i < 4; i++) |
f602ff7e DB |
860 | if (dev->prod_id[i]) |
861 | return 0; | |
862 | if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) | |
863 | return 0; | |
864 | } | |
865 | ||
1ad275e3 DB |
866 | return 1; |
867 | } | |
868 | ||
869 | ||
9fea84f4 DB |
870 | static int pcmcia_bus_match(struct device *dev, struct device_driver *drv) |
871 | { | |
872 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
873 | struct pcmcia_driver *p_drv = to_pcmcia_drv(drv); | |
1ad275e3 | 874 | struct pcmcia_device_id *did = p_drv->id_table; |
6179b556 BW |
875 | struct pcmcia_dynid *dynid; |
876 | ||
877 | /* match dynamic devices first */ | |
3f565232 | 878 | mutex_lock(&p_drv->dynids.lock); |
6179b556 | 879 | list_for_each_entry(dynid, &p_drv->dynids.list, node) { |
d50dbec3 | 880 | dev_dbg(dev, "trying to match to %s\n", drv->name); |
6179b556 | 881 | if (pcmcia_devmatch(p_dev, &dynid->id)) { |
d50dbec3 | 882 | dev_dbg(dev, "matched to %s\n", drv->name); |
3f565232 | 883 | mutex_unlock(&p_drv->dynids.lock); |
6179b556 BW |
884 | return 1; |
885 | } | |
886 | } | |
3f565232 | 887 | mutex_unlock(&p_drv->dynids.lock); |
1da177e4 | 888 | |
1ad275e3 | 889 | while (did && did->match_flags) { |
d50dbec3 | 890 | dev_dbg(dev, "trying to match to %s\n", drv->name); |
d9d9ea01 | 891 | if (pcmcia_devmatch(p_dev, did)) { |
d50dbec3 | 892 | dev_dbg(dev, "matched to %s\n", drv->name); |
1ad275e3 | 893 | return 1; |
d9d9ea01 | 894 | } |
1ad275e3 DB |
895 | did++; |
896 | } | |
897 | ||
1da177e4 LT |
898 | return 0; |
899 | } | |
900 | ||
840c2ac5 DB |
901 | #ifdef CONFIG_HOTPLUG |
902 | ||
7eff2e7a | 903 | static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
840c2ac5 DB |
904 | { |
905 | struct pcmcia_device *p_dev; | |
7eff2e7a | 906 | int i; |
840c2ac5 DB |
907 | u32 hash[4] = { 0, 0, 0, 0}; |
908 | ||
909 | if (!dev) | |
910 | return -ENODEV; | |
911 | ||
912 | p_dev = to_pcmcia_dev(dev); | |
913 | ||
914 | /* calculate hashes */ | |
9fea84f4 | 915 | for (i = 0; i < 4; i++) { |
840c2ac5 DB |
916 | if (!p_dev->prod_id[i]) |
917 | continue; | |
918 | hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); | |
919 | } | |
920 | ||
7eff2e7a | 921 | if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) |
840c2ac5 DB |
922 | return -ENOMEM; |
923 | ||
7eff2e7a | 924 | if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) |
840c2ac5 DB |
925 | return -ENOMEM; |
926 | ||
7eff2e7a | 927 | if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" |
312c004d KS |
928 | "pa%08Xpb%08Xpc%08Xpd%08X", |
929 | p_dev->has_manf_id ? p_dev->manf_id : 0, | |
930 | p_dev->has_card_id ? p_dev->card_id : 0, | |
931 | p_dev->has_func_id ? p_dev->func_id : 0, | |
932 | p_dev->func, | |
933 | p_dev->device_no, | |
934 | hash[0], | |
935 | hash[1], | |
936 | hash[2], | |
937 | hash[3])) | |
840c2ac5 DB |
938 | return -ENOMEM; |
939 | ||
840c2ac5 DB |
940 | return 0; |
941 | } | |
942 | ||
943 | #else | |
944 | ||
7eff2e7a | 945 | static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
840c2ac5 DB |
946 | { |
947 | return -ENODEV; | |
948 | } | |
949 | ||
950 | #endif | |
951 | ||
3f8df781 AS |
952 | /************************ runtime PM support ***************************/ |
953 | ||
954 | static int pcmcia_dev_suspend(struct device *dev, pm_message_t state); | |
955 | static int pcmcia_dev_resume(struct device *dev); | |
956 | ||
957 | static int runtime_suspend(struct device *dev) | |
958 | { | |
959 | int rc; | |
960 | ||
8e9394ce | 961 | device_lock(dev); |
3f8df781 | 962 | rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND); |
8e9394ce | 963 | device_unlock(dev); |
3f8df781 AS |
964 | return rc; |
965 | } | |
966 | ||
933a838a | 967 | static int runtime_resume(struct device *dev) |
3f8df781 AS |
968 | { |
969 | int rc; | |
970 | ||
8e9394ce | 971 | device_lock(dev); |
3f8df781 | 972 | rc = pcmcia_dev_resume(dev); |
8e9394ce | 973 | device_unlock(dev); |
933a838a | 974 | return rc; |
3f8df781 AS |
975 | } |
976 | ||
1da177e4 LT |
977 | /************************ per-device sysfs output ***************************/ |
978 | ||
979 | #define pcmcia_device_attr(field, test, format) \ | |
e404e274 | 980 | static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
981 | { \ |
982 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
9fea84f4 | 983 | return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \ |
1da177e4 LT |
984 | } |
985 | ||
986 | #define pcmcia_device_stringattr(name, field) \ | |
e404e274 | 987 | static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
988 | { \ |
989 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
9fea84f4 | 990 | return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \ |
1da177e4 LT |
991 | } |
992 | ||
993 | pcmcia_device_attr(func, socket, "0x%02x\n"); | |
994 | pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); | |
995 | pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); | |
996 | pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); | |
997 | pcmcia_device_stringattr(prod_id1, prod_id[0]); | |
998 | pcmcia_device_stringattr(prod_id2, prod_id[1]); | |
999 | pcmcia_device_stringattr(prod_id3, prod_id[2]); | |
1000 | pcmcia_device_stringattr(prod_id4, prod_id[3]); | |
1001 | ||
db1019ca DB |
1002 | |
1003 | static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf) | |
1004 | { | |
1005 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1006 | ||
f6fbe01a | 1007 | if (p_dev->suspended) |
db1019ca DB |
1008 | return sprintf(buf, "off\n"); |
1009 | else | |
1010 | return sprintf(buf, "on\n"); | |
1011 | } | |
1012 | ||
1013 | static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr, | |
1014 | const char *buf, size_t count) | |
1015 | { | |
1016 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1017 | int ret = 0; | |
1018 | ||
9fea84f4 DB |
1019 | if (!count) |
1020 | return -EINVAL; | |
db1019ca | 1021 | |
f6fbe01a | 1022 | if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) |
3f8df781 | 1023 | ret = runtime_suspend(dev); |
f6fbe01a | 1024 | else if (p_dev->suspended && !strncmp(buf, "on", 2)) |
933a838a | 1025 | ret = runtime_resume(dev); |
db1019ca DB |
1026 | |
1027 | return ret ? ret : count; | |
1028 | } | |
1029 | ||
1030 | ||
3704511b | 1031 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
3248ff43 DB |
1032 | { |
1033 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1034 | int i; | |
1035 | u32 hash[4] = { 0, 0, 0, 0}; | |
1036 | ||
1037 | /* calculate hashes */ | |
9fea84f4 | 1038 | for (i = 0; i < 4; i++) { |
3248ff43 DB |
1039 | if (!p_dev->prod_id[i]) |
1040 | continue; | |
9fea84f4 DB |
1041 | hash[i] = crc32(0, p_dev->prod_id[i], |
1042 | strlen(p_dev->prod_id[i])); | |
3248ff43 DB |
1043 | } |
1044 | return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" | |
1045 | "pa%08Xpb%08Xpc%08Xpd%08X\n", | |
1046 | p_dev->has_manf_id ? p_dev->manf_id : 0, | |
1047 | p_dev->has_card_id ? p_dev->card_id : 0, | |
1048 | p_dev->has_func_id ? p_dev->func_id : 0, | |
1049 | p_dev->func, p_dev->device_no, | |
1050 | hash[0], hash[1], hash[2], hash[3]); | |
1051 | } | |
a5b55778 | 1052 | |
3248ff43 DB |
1053 | static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, |
1054 | struct device_attribute *attr, const char *buf, size_t count) | |
a5b55778 DB |
1055 | { |
1056 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
db1019ca DB |
1057 | |
1058 | if (!count) | |
1059 | return -EINVAL; | |
a5b55778 | 1060 | |
94a819f8 | 1061 | mutex_lock(&p_dev->socket->ops_mutex); |
a5b55778 | 1062 | p_dev->allow_func_id_match = 1; |
94a819f8 | 1063 | mutex_unlock(&p_dev->socket->ops_mutex); |
af461fc1 | 1064 | pcmcia_parse_uevents(p_dev->socket, PCMCIA_UEVENT_REQUERY); |
a5b55778 DB |
1065 | |
1066 | return count; | |
1067 | } | |
1068 | ||
1da177e4 LT |
1069 | static struct device_attribute pcmcia_dev_attrs[] = { |
1070 | __ATTR(function, 0444, func_show, NULL), | |
db1019ca | 1071 | __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state), |
1da177e4 LT |
1072 | __ATTR_RO(func_id), |
1073 | __ATTR_RO(manf_id), | |
1074 | __ATTR_RO(card_id), | |
1075 | __ATTR_RO(prod_id1), | |
1076 | __ATTR_RO(prod_id2), | |
1077 | __ATTR_RO(prod_id3), | |
1078 | __ATTR_RO(prod_id4), | |
3248ff43 | 1079 | __ATTR_RO(modalias), |
a5b55778 | 1080 | __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), |
1da177e4 LT |
1081 | __ATTR_NULL, |
1082 | }; | |
1083 | ||
8e9e793d DB |
1084 | /* PM support, also needed for reset */ |
1085 | ||
9fea84f4 | 1086 | static int pcmcia_dev_suspend(struct device *dev, pm_message_t state) |
8e9e793d DB |
1087 | { |
1088 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1089 | struct pcmcia_driver *p_drv = NULL; | |
f6fbe01a | 1090 | int ret = 0; |
8e9e793d | 1091 | |
94a819f8 DB |
1092 | mutex_lock(&p_dev->socket->ops_mutex); |
1093 | if (p_dev->suspended) { | |
1094 | mutex_unlock(&p_dev->socket->ops_mutex); | |
d6b4fa6d | 1095 | return 0; |
94a819f8 DB |
1096 | } |
1097 | p_dev->suspended = 1; | |
1098 | mutex_unlock(&p_dev->socket->ops_mutex); | |
d6b4fa6d | 1099 | |
d50dbec3 | 1100 | dev_dbg(dev, "suspending\n"); |
d9d9ea01 | 1101 | |
8e9e793d DB |
1102 | if (dev->driver) |
1103 | p_drv = to_pcmcia_drv(dev->driver); | |
1104 | ||
e2d40963 DB |
1105 | if (!p_drv) |
1106 | goto out; | |
1107 | ||
1108 | if (p_drv->suspend) { | |
8661bb5b | 1109 | ret = p_drv->suspend(p_dev); |
d9d9ea01 | 1110 | if (ret) { |
ac449d6e DB |
1111 | dev_printk(KERN_ERR, dev, |
1112 | "pcmcia: device %s (driver %s) did " | |
1113 | "not want to go to sleep (%d)\n", | |
1114 | p_dev->devname, p_drv->drv.name, ret); | |
94a819f8 DB |
1115 | mutex_lock(&p_dev->socket->ops_mutex); |
1116 | p_dev->suspended = 0; | |
1117 | mutex_unlock(&p_dev->socket->ops_mutex); | |
f6fbe01a | 1118 | goto out; |
d9d9ea01 | 1119 | } |
8661bb5b | 1120 | } |
8e9e793d | 1121 | |
d9d9ea01 | 1122 | if (p_dev->device_no == p_dev->func) { |
d50dbec3 | 1123 | dev_dbg(dev, "releasing configuration\n"); |
e2d40963 | 1124 | pcmcia_release_configuration(p_dev); |
d9d9ea01 | 1125 | } |
e2d40963 | 1126 | |
f6fbe01a | 1127 | out: |
f6fbe01a | 1128 | return ret; |
8e9e793d DB |
1129 | } |
1130 | ||
1131 | ||
9fea84f4 | 1132 | static int pcmcia_dev_resume(struct device *dev) |
8e9e793d DB |
1133 | { |
1134 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
9fea84f4 | 1135 | struct pcmcia_driver *p_drv = NULL; |
f6fbe01a | 1136 | int ret = 0; |
8e9e793d | 1137 | |
94a819f8 DB |
1138 | mutex_lock(&p_dev->socket->ops_mutex); |
1139 | if (!p_dev->suspended) { | |
1140 | mutex_unlock(&p_dev->socket->ops_mutex); | |
d6b4fa6d | 1141 | return 0; |
94a819f8 DB |
1142 | } |
1143 | p_dev->suspended = 0; | |
1144 | mutex_unlock(&p_dev->socket->ops_mutex); | |
d6b4fa6d | 1145 | |
d50dbec3 | 1146 | dev_dbg(dev, "resuming\n"); |
d9d9ea01 | 1147 | |
8e9e793d DB |
1148 | if (dev->driver) |
1149 | p_drv = to_pcmcia_drv(dev->driver); | |
1150 | ||
e2d40963 DB |
1151 | if (!p_drv) |
1152 | goto out; | |
1153 | ||
1154 | if (p_dev->device_no == p_dev->func) { | |
d50dbec3 | 1155 | dev_dbg(dev, "requesting configuration\n"); |
e2d40963 DB |
1156 | ret = pcmcia_request_configuration(p_dev, &p_dev->conf); |
1157 | if (ret) | |
1158 | goto out; | |
8661bb5b | 1159 | } |
8e9e793d | 1160 | |
e2d40963 DB |
1161 | if (p_drv->resume) |
1162 | ret = p_drv->resume(p_dev); | |
1163 | ||
f6fbe01a | 1164 | out: |
f6fbe01a | 1165 | return ret; |
8e9e793d DB |
1166 | } |
1167 | ||
1168 | ||
1169 | static int pcmcia_bus_suspend_callback(struct device *dev, void * _data) | |
1170 | { | |
1171 | struct pcmcia_socket *skt = _data; | |
1172 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1173 | ||
3f8df781 | 1174 | if (p_dev->socket != skt || p_dev->suspended) |
8e9e793d DB |
1175 | return 0; |
1176 | ||
3f8df781 | 1177 | return runtime_suspend(dev); |
8e9e793d DB |
1178 | } |
1179 | ||
1180 | static int pcmcia_bus_resume_callback(struct device *dev, void * _data) | |
1181 | { | |
1182 | struct pcmcia_socket *skt = _data; | |
1183 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1184 | ||
3f8df781 | 1185 | if (p_dev->socket != skt || !p_dev->suspended) |
8e9e793d DB |
1186 | return 0; |
1187 | ||
3f8df781 | 1188 | runtime_resume(dev); |
8e9e793d DB |
1189 | |
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | static int pcmcia_bus_resume(struct pcmcia_socket *skt) | |
1194 | { | |
d50dbec3 | 1195 | dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock); |
8e9e793d DB |
1196 | bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); |
1197 | return 0; | |
1198 | } | |
1199 | ||
1200 | static int pcmcia_bus_suspend(struct pcmcia_socket *skt) | |
1201 | { | |
d50dbec3 | 1202 | dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock); |
8e9e793d DB |
1203 | if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, |
1204 | pcmcia_bus_suspend_callback)) { | |
1205 | pcmcia_bus_resume(skt); | |
1206 | return -EIO; | |
1207 | } | |
1208 | return 0; | |
1209 | } | |
1210 | ||
7b24e798 DB |
1211 | static int pcmcia_bus_remove(struct pcmcia_socket *skt) |
1212 | { | |
1213 | atomic_set(&skt->present, 0); | |
1214 | pcmcia_card_remove(skt, NULL); | |
1da177e4 | 1215 | |
7b24e798 DB |
1216 | mutex_lock(&skt->ops_mutex); |
1217 | destroy_cis_cache(skt); | |
1218 | pcmcia_cleanup_irq(skt); | |
1219 | mutex_unlock(&skt->ops_mutex); | |
1da177e4 | 1220 | |
7b24e798 DB |
1221 | return 0; |
1222 | } | |
9fea84f4 | 1223 | |
7b24e798 DB |
1224 | static int pcmcia_bus_add(struct pcmcia_socket *skt) |
1225 | { | |
1226 | atomic_set(&skt->present, 1); | |
1da177e4 | 1227 | |
7b24e798 DB |
1228 | mutex_lock(&skt->ops_mutex); |
1229 | skt->pcmcia_state.has_pfc = 0; | |
1230 | destroy_cis_cache(skt); /* to be on the safe side... */ | |
1231 | mutex_unlock(&skt->ops_mutex); | |
1da177e4 | 1232 | |
7b24e798 | 1233 | pcmcia_card_add(skt); |
1da177e4 | 1234 | |
7b24e798 DB |
1235 | return 0; |
1236 | } | |
1617406a | 1237 | |
7b24e798 DB |
1238 | static int pcmcia_bus_early_resume(struct pcmcia_socket *skt) |
1239 | { | |
1240 | if (!verify_cis_cache(skt)) { | |
1241 | pcmcia_put_socket(skt); | |
1242 | return 0; | |
1243 | } | |
1da177e4 | 1244 | |
7b24e798 | 1245 | dev_dbg(&skt->dev, "cis mismatch - different card\n"); |
f8cfa618 | 1246 | |
7b24e798 DB |
1247 | /* first, remove the card */ |
1248 | pcmcia_bus_remove(skt); | |
88b060d6 | 1249 | |
7b24e798 DB |
1250 | mutex_lock(&skt->ops_mutex); |
1251 | destroy_cis_cache(skt); | |
1252 | kfree(skt->fake_cis); | |
1253 | skt->fake_cis = NULL; | |
1254 | skt->functions = 0; | |
1255 | mutex_unlock(&skt->ops_mutex); | |
1da177e4 | 1256 | |
7b24e798 DB |
1257 | /* now, add the new card */ |
1258 | pcmcia_bus_add(skt); | |
1259 | return 0; | |
1260 | } | |
dc109497 | 1261 | |
1da177e4 | 1262 | |
04de0816 DB |
1263 | /* |
1264 | * NOTE: This is racy. There's no guarantee the card will still be | |
1265 | * physically present, even if the call to this function returns | |
1266 | * non-NULL. Furthermore, the device driver most likely is unbound | |
1267 | * almost immediately, so the timeframe where pcmcia_dev_present | |
1268 | * returns NULL is probably really really small. | |
1269 | */ | |
9fea84f4 | 1270 | struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev) |
9940ec36 DB |
1271 | { |
1272 | struct pcmcia_device *p_dev; | |
1273 | struct pcmcia_device *ret = NULL; | |
1274 | ||
1275 | p_dev = pcmcia_get_dev(_p_dev); | |
1276 | if (!p_dev) | |
1277 | return NULL; | |
1278 | ||
04de0816 DB |
1279 | if (atomic_read(&p_dev->socket->present) != 0) |
1280 | ret = p_dev; | |
9940ec36 | 1281 | |
9940ec36 DB |
1282 | pcmcia_put_dev(p_dev); |
1283 | return ret; | |
1284 | } | |
1285 | EXPORT_SYMBOL(pcmcia_dev_present); | |
1286 | ||
1287 | ||
90c6cdd1 DB |
1288 | static struct pcmcia_callback pcmcia_bus_callback = { |
1289 | .owner = THIS_MODULE, | |
7b24e798 DB |
1290 | .add = pcmcia_bus_add, |
1291 | .remove = pcmcia_bus_remove, | |
af461fc1 | 1292 | .requery = pcmcia_requery, |
6e7b51a7 | 1293 | .validate = pccard_validate_cis, |
8e9e793d | 1294 | .suspend = pcmcia_bus_suspend, |
7b24e798 | 1295 | .early_resume = pcmcia_bus_early_resume, |
8e9e793d | 1296 | .resume = pcmcia_bus_resume, |
90c6cdd1 DB |
1297 | }; |
1298 | ||
87373318 | 1299 | static int __devinit pcmcia_bus_add_socket(struct device *dev, |
d8539d81 | 1300 | struct class_interface *class_intf) |
1da177e4 | 1301 | { |
87373318 | 1302 | struct pcmcia_socket *socket = dev_get_drvdata(dev); |
1da177e4 LT |
1303 | int ret; |
1304 | ||
dc109497 DB |
1305 | socket = pcmcia_get_socket(socket); |
1306 | if (!socket) { | |
ac449d6e DB |
1307 | dev_printk(KERN_ERR, dev, |
1308 | "PCMCIA obtaining reference to socket failed\n"); | |
1da177e4 LT |
1309 | return -ENODEV; |
1310 | } | |
1311 | ||
6e7b51a7 DB |
1312 | ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr); |
1313 | if (ret) { | |
1314 | dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); | |
1315 | pcmcia_put_socket(socket); | |
1316 | return ret; | |
1317 | } | |
1318 | ||
dc109497 | 1319 | INIT_LIST_HEAD(&socket->devices_list); |
dc109497 DB |
1320 | memset(&socket->pcmcia_state, 0, sizeof(u8)); |
1321 | socket->device_count = 0; | |
e4f1ac21 | 1322 | atomic_set(&socket->present, 0); |
1da177e4 | 1323 | |
90c6cdd1 | 1324 | ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); |
1da177e4 | 1325 | if (ret) { |
ac449d6e | 1326 | dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); |
dc109497 | 1327 | pcmcia_put_socket(socket); |
9fea84f4 | 1328 | return ret; |
1da177e4 LT |
1329 | } |
1330 | ||
1331 | return 0; | |
1332 | } | |
1333 | ||
87373318 | 1334 | static void pcmcia_bus_remove_socket(struct device *dev, |
d8539d81 | 1335 | struct class_interface *class_intf) |
1da177e4 | 1336 | { |
87373318 | 1337 | struct pcmcia_socket *socket = dev_get_drvdata(dev); |
1da177e4 | 1338 | |
dc109497 | 1339 | if (!socket) |
1da177e4 LT |
1340 | return; |
1341 | ||
1342 | pccard_register_pcmcia(socket, NULL); | |
1343 | ||
dfbc9e9d | 1344 | /* unregister any unbound devices */ |
8e4d9dcb | 1345 | mutex_lock(&socket->skt_mutex); |
dfbc9e9d | 1346 | pcmcia_card_remove(socket, NULL); |
180c33ee | 1347 | release_cis_mem(socket); |
8e4d9dcb | 1348 | mutex_unlock(&socket->skt_mutex); |
dfbc9e9d | 1349 | |
6e7b51a7 DB |
1350 | sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr); |
1351 | ||
dc109497 | 1352 | pcmcia_put_socket(socket); |
1da177e4 LT |
1353 | |
1354 | return; | |
1355 | } | |
1356 | ||
1357 | ||
1358 | /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ | |
ed49f5d0 | 1359 | static struct class_interface pcmcia_bus_interface __refdata = { |
1da177e4 | 1360 | .class = &pcmcia_socket_class, |
87373318 GKH |
1361 | .add_dev = &pcmcia_bus_add_socket, |
1362 | .remove_dev = &pcmcia_bus_remove_socket, | |
1da177e4 LT |
1363 | }; |
1364 | ||
1365 | ||
e7a480d2 | 1366 | struct bus_type pcmcia_bus_type = { |
1da177e4 | 1367 | .name = "pcmcia", |
312c004d | 1368 | .uevent = pcmcia_bus_uevent, |
1da177e4 LT |
1369 | .match = pcmcia_bus_match, |
1370 | .dev_attrs = pcmcia_dev_attrs, | |
1d0baa3a RK |
1371 | .probe = pcmcia_device_probe, |
1372 | .remove = pcmcia_device_remove, | |
8e9e793d DB |
1373 | .suspend = pcmcia_dev_suspend, |
1374 | .resume = pcmcia_dev_resume, | |
1da177e4 | 1375 | }; |
1da177e4 LT |
1376 | |
1377 | ||
1378 | static int __init init_pcmcia_bus(void) | |
1379 | { | |
ace7d477 RD |
1380 | int ret; |
1381 | ||
ace7d477 RD |
1382 | ret = bus_register(&pcmcia_bus_type); |
1383 | if (ret < 0) { | |
1384 | printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret); | |
1385 | return ret; | |
1386 | } | |
1387 | ret = class_interface_register(&pcmcia_bus_interface); | |
1388 | if (ret < 0) { | |
1389 | printk(KERN_WARNING | |
1390 | "pcmcia: class_interface_register error: %d\n", ret); | |
1391 | bus_unregister(&pcmcia_bus_type); | |
1392 | return ret; | |
1393 | } | |
1da177e4 | 1394 | |
1da177e4 LT |
1395 | return 0; |
1396 | } | |
9fea84f4 | 1397 | fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that |
1da177e4 LT |
1398 | * pcmcia_socket_class is already registered */ |
1399 | ||
1400 | ||
1401 | static void __exit exit_pcmcia_bus(void) | |
1402 | { | |
e7a480d2 | 1403 | class_interface_unregister(&pcmcia_bus_interface); |
1da177e4 LT |
1404 | |
1405 | bus_unregister(&pcmcia_bus_type); | |
1406 | } | |
1407 | module_exit(exit_pcmcia_bus); | |
1408 | ||
1409 | ||
1da177e4 | 1410 | MODULE_ALIAS("ds"); |