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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 | |
8661bb5b | 13 | * (C) 2003 - 2006 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> |
1da177e4 | 27 | |
1da177e4 LT |
28 | #include <pcmcia/cs_types.h> |
29 | #include <pcmcia/cs.h> | |
1da177e4 LT |
30 | #include <pcmcia/cistpl.h> |
31 | #include <pcmcia/ds.h> | |
32 | #include <pcmcia/ss.h> | |
33 | ||
34 | #include "cs_internal.h" | |
35 | ||
36 | /*====================================================================*/ | |
37 | ||
38 | /* Module parameters */ | |
39 | ||
40 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
41 | MODULE_DESCRIPTION("PCMCIA Driver Services"); | |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
1da177e4 | 44 | |
1da177e4 LT |
45 | /*====================================================================*/ |
46 | ||
23a83bfe DB |
47 | static void pcmcia_check_driver(struct pcmcia_driver *p_drv) |
48 | { | |
49 | struct pcmcia_device_id *did = p_drv->id_table; | |
50 | unsigned int i; | |
51 | u32 hash; | |
52 | ||
f8cfa618 | 53 | if (!p_drv->probe || !p_drv->remove) |
ba5bb6b5 PR |
54 | printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback " |
55 | "function\n", p_drv->drv.name); | |
1e212f36 | 56 | |
23a83bfe | 57 | while (did && did->match_flags) { |
9fea84f4 | 58 | for (i = 0; i < 4; i++) { |
23a83bfe DB |
59 | if (!did->prod_id[i]) |
60 | continue; | |
61 | ||
62 | hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i])); | |
63 | if (hash == did->prod_id_hash[i]) | |
64 | continue; | |
65 | ||
66 | printk(KERN_DEBUG "pcmcia: %s: invalid hash for " | |
67 | "product string \"%s\": is 0x%x, should " | |
68 | "be 0x%x\n", p_drv->drv.name, did->prod_id[i], | |
69 | did->prod_id_hash[i], hash); | |
5085cb26 DB |
70 | printk(KERN_DEBUG "pcmcia: see " |
71 | "Documentation/pcmcia/devicetable.txt for " | |
72 | "details\n"); | |
23a83bfe DB |
73 | } |
74 | did++; | |
75 | } | |
76 | ||
77 | return; | |
78 | } | |
79 | ||
daa9517d | 80 | |
1da177e4 LT |
81 | /*======================================================================*/ |
82 | ||
1da177e4 | 83 | |
6179b556 BW |
84 | struct pcmcia_dynid { |
85 | struct list_head node; | |
86 | struct pcmcia_device_id id; | |
87 | }; | |
88 | ||
89 | /** | |
90 | * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices | |
91 | * @driver: target device driver | |
92 | * @buf: buffer for scanning device ID data | |
93 | * @count: input size | |
94 | * | |
95 | * Adds a new dynamic PCMCIA device ID to this driver, | |
96 | * and causes the driver to probe for all devices again. | |
97 | */ | |
98 | static ssize_t | |
99 | pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count) | |
100 | { | |
101 | struct pcmcia_dynid *dynid; | |
102 | struct pcmcia_driver *pdrv = to_pcmcia_drv(driver); | |
103 | __u16 match_flags, manf_id, card_id; | |
104 | __u8 func_id, function, device_no; | |
105 | __u32 prod_id_hash[4] = {0, 0, 0, 0}; | |
9fea84f4 | 106 | int fields = 0; |
6179b556 BW |
107 | int retval = 0; |
108 | ||
109 | fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x", | |
110 | &match_flags, &manf_id, &card_id, &func_id, &function, &device_no, | |
111 | &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]); | |
112 | if (fields < 6) | |
113 | return -EINVAL; | |
114 | ||
115 | dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL); | |
116 | if (!dynid) | |
117 | return -ENOMEM; | |
118 | ||
6179b556 BW |
119 | dynid->id.match_flags = match_flags; |
120 | dynid->id.manf_id = manf_id; | |
121 | dynid->id.card_id = card_id; | |
122 | dynid->id.func_id = func_id; | |
123 | dynid->id.function = function; | |
124 | dynid->id.device_no = device_no; | |
125 | memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4); | |
126 | ||
127 | spin_lock(&pdrv->dynids.lock); | |
b4b3d7bb | 128 | list_add_tail(&dynid->node, &pdrv->dynids.list); |
6179b556 BW |
129 | spin_unlock(&pdrv->dynids.lock); |
130 | ||
131 | if (get_driver(&pdrv->drv)) { | |
132 | retval = driver_attach(&pdrv->drv); | |
133 | put_driver(&pdrv->drv); | |
134 | } | |
135 | ||
136 | if (retval) | |
137 | return retval; | |
138 | return count; | |
139 | } | |
140 | static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id); | |
141 | ||
142 | static void | |
143 | pcmcia_free_dynids(struct pcmcia_driver *drv) | |
144 | { | |
145 | struct pcmcia_dynid *dynid, *n; | |
146 | ||
147 | spin_lock(&drv->dynids.lock); | |
148 | list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { | |
149 | list_del(&dynid->node); | |
150 | kfree(dynid); | |
151 | } | |
152 | spin_unlock(&drv->dynids.lock); | |
153 | } | |
154 | ||
155 | static int | |
156 | pcmcia_create_newid_file(struct pcmcia_driver *drv) | |
157 | { | |
158 | int error = 0; | |
159 | if (drv->probe != NULL) | |
2344c6de | 160 | error = driver_create_file(&drv->drv, &driver_attr_new_id); |
6179b556 BW |
161 | return error; |
162 | } | |
163 | ||
164 | ||
1da177e4 LT |
165 | /** |
166 | * pcmcia_register_driver - register a PCMCIA driver with the bus core | |
78187865 | 167 | * @driver: the &driver being registered |
1da177e4 LT |
168 | * |
169 | * Registers a PCMCIA driver with the PCMCIA bus core. | |
170 | */ | |
1da177e4 LT |
171 | int pcmcia_register_driver(struct pcmcia_driver *driver) |
172 | { | |
6179b556 BW |
173 | int error; |
174 | ||
1da177e4 LT |
175 | if (!driver) |
176 | return -EINVAL; | |
177 | ||
23a83bfe DB |
178 | pcmcia_check_driver(driver); |
179 | ||
1da177e4 LT |
180 | /* initialize common fields */ |
181 | driver->drv.bus = &pcmcia_bus_type; | |
182 | driver->drv.owner = driver->owner; | |
6179b556 BW |
183 | spin_lock_init(&driver->dynids.lock); |
184 | INIT_LIST_HEAD(&driver->dynids.list); | |
1da177e4 | 185 | |
d50dbec3 | 186 | pr_debug("registering driver %s\n", driver->drv.name); |
d9d9ea01 | 187 | |
6179b556 BW |
188 | error = driver_register(&driver->drv); |
189 | if (error < 0) | |
190 | return error; | |
191 | ||
192 | error = pcmcia_create_newid_file(driver); | |
193 | if (error) | |
194 | driver_unregister(&driver->drv); | |
195 | ||
196 | return error; | |
1da177e4 LT |
197 | } |
198 | EXPORT_SYMBOL(pcmcia_register_driver); | |
199 | ||
200 | /** | |
201 | * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core | |
78187865 | 202 | * @driver: the &driver being unregistered |
1da177e4 LT |
203 | */ |
204 | void pcmcia_unregister_driver(struct pcmcia_driver *driver) | |
205 | { | |
d50dbec3 | 206 | pr_debug("unregistering driver %s\n", driver->drv.name); |
1da177e4 | 207 | driver_unregister(&driver->drv); |
6179b556 | 208 | pcmcia_free_dynids(driver); |
1da177e4 LT |
209 | } |
210 | EXPORT_SYMBOL(pcmcia_unregister_driver); | |
211 | ||
1da177e4 LT |
212 | |
213 | /* pcmcia_device handling */ | |
214 | ||
9fea84f4 | 215 | struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev) |
1da177e4 LT |
216 | { |
217 | struct device *tmp_dev; | |
218 | tmp_dev = get_device(&p_dev->dev); | |
219 | if (!tmp_dev) | |
220 | return NULL; | |
221 | return to_pcmcia_dev(tmp_dev); | |
222 | } | |
223 | ||
e7a480d2 | 224 | void pcmcia_put_dev(struct pcmcia_device *p_dev) |
1da177e4 LT |
225 | { |
226 | if (p_dev) | |
227 | put_device(&p_dev->dev); | |
228 | } | |
229 | ||
360b65b9 DB |
230 | static void pcmcia_release_function(struct kref *ref) |
231 | { | |
232 | struct config_t *c = container_of(ref, struct config_t, ref); | |
d50dbec3 | 233 | pr_debug("releasing config_t\n"); |
360b65b9 DB |
234 | kfree(c); |
235 | } | |
236 | ||
1da177e4 LT |
237 | static void pcmcia_release_dev(struct device *dev) |
238 | { | |
239 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
d50dbec3 | 240 | dev_dbg(dev, "releasing device\n"); |
dc109497 | 241 | pcmcia_put_socket(p_dev->socket); |
bd65a685 | 242 | kfree(p_dev->devname); |
360b65b9 | 243 | kref_put(&p_dev->function_config->ref, pcmcia_release_function); |
1da177e4 LT |
244 | kfree(p_dev); |
245 | } | |
246 | ||
1d2c9042 | 247 | static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc) |
82d56e6d DB |
248 | { |
249 | if (!s->pcmcia_state.device_add_pending) { | |
d50dbec3 | 250 | dev_dbg(&s->dev, "scheduling to add %s secondary" |
d9d9ea01 | 251 | " device to %d\n", mfc ? "mfc" : "pfc", s->sock); |
82d56e6d | 252 | s->pcmcia_state.device_add_pending = 1; |
1d2c9042 | 253 | s->pcmcia_state.mfc_pfc = mfc; |
82d56e6d DB |
254 | schedule_work(&s->device_add); |
255 | } | |
256 | return; | |
257 | } | |
1da177e4 | 258 | |
9fea84f4 | 259 | static int pcmcia_device_probe(struct device *dev) |
1da177e4 LT |
260 | { |
261 | struct pcmcia_device *p_dev; | |
262 | struct pcmcia_driver *p_drv; | |
82d56e6d | 263 | struct pcmcia_device_id *did; |
f8cfa618 | 264 | struct pcmcia_socket *s; |
af2b3b50 | 265 | cistpl_config_t cis_config; |
1da177e4 LT |
266 | int ret = 0; |
267 | ||
268 | dev = get_device(dev); | |
269 | if (!dev) | |
270 | return -ENODEV; | |
271 | ||
272 | p_dev = to_pcmcia_dev(dev); | |
273 | p_drv = to_pcmcia_drv(dev->driver); | |
f8cfa618 | 274 | s = p_dev->socket; |
1da177e4 | 275 | |
f3e7a7b6 | 276 | /* The PCMCIA code passes the match data in via dev_set_drvdata(dev) |
cec5eb7b AC |
277 | * which is an ugly hack. Once the driver probe is called it may |
278 | * and often will overwrite the match data so we must save it first | |
279 | * | |
280 | * handle pseudo multifunction devices: | |
281 | * there are at most two pseudo multifunction devices. | |
282 | * if we're matching against the first, schedule a | |
283 | * call which will then check whether there are two | |
284 | * pseudo devices, and if not, add the second one. | |
285 | */ | |
f3e7a7b6 | 286 | did = dev_get_drvdata(&p_dev->dev); |
cec5eb7b | 287 | |
d50dbec3 | 288 | dev_dbg(dev, "trying to bind to %s\n", p_drv->drv.name); |
d9d9ea01 | 289 | |
360b65b9 DB |
290 | if ((!p_drv->probe) || (!p_dev->function_config) || |
291 | (!try_module_get(p_drv->owner))) { | |
1da177e4 LT |
292 | ret = -EINVAL; |
293 | goto put_dev; | |
294 | } | |
295 | ||
af2b3b50 DB |
296 | /* set up some more device information */ |
297 | ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG, | |
298 | &cis_config); | |
299 | if (!ret) { | |
300 | p_dev->conf.ConfigBase = cis_config.base; | |
301 | p_dev->conf.Present = cis_config.rmask[0]; | |
302 | } else { | |
ac449d6e DB |
303 | dev_printk(KERN_INFO, dev, |
304 | "pcmcia: could not parse base and rmask0 of CIS\n"); | |
af2b3b50 DB |
305 | p_dev->conf.ConfigBase = 0; |
306 | p_dev->conf.Present = 0; | |
307 | } | |
308 | ||
f8cfa618 | 309 | ret = p_drv->probe(p_dev); |
d9d9ea01 | 310 | if (ret) { |
d50dbec3 | 311 | dev_dbg(dev, "binding to %s failed with %d\n", |
ac449d6e | 312 | p_drv->drv.name, ret); |
82d56e6d | 313 | goto put_module; |
d9d9ea01 | 314 | } |
82d56e6d | 315 | |
00ce99ff | 316 | mutex_lock(&s->ops_mutex); |
4ceadbf5 | 317 | if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && |
82d56e6d | 318 | (p_dev->socket->device_count == 1) && (p_dev->device_no == 0)) |
1d2c9042 | 319 | pcmcia_add_device_later(p_dev->socket, 0); |
00ce99ff | 320 | mutex_unlock(&s->ops_mutex); |
f8cfa618 | 321 | |
cec5eb7b | 322 | put_module: |
1da177e4 LT |
323 | if (ret) |
324 | module_put(p_drv->owner); | |
cec5eb7b | 325 | put_dev: |
f8cfa618 | 326 | if (ret) |
1da177e4 | 327 | put_device(dev); |
9fea84f4 | 328 | return ret; |
1da177e4 LT |
329 | } |
330 | ||
331 | ||
d6ff5a85 DB |
332 | /* |
333 | * Removes a PCMCIA card from the device tree and socket list. | |
334 | */ | |
335 | static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover) | |
336 | { | |
337 | struct pcmcia_device *p_dev; | |
338 | struct pcmcia_device *tmp; | |
d6ff5a85 | 339 | |
d50dbec3 | 340 | dev_dbg(leftover ? &leftover->dev : &s->dev, |
ac449d6e DB |
341 | "pcmcia_card_remove(%d) %s\n", s->sock, |
342 | leftover ? leftover->devname : ""); | |
d6ff5a85 | 343 | |
00ce99ff | 344 | mutex_lock(&s->ops_mutex); |
d6ff5a85 DB |
345 | if (!leftover) |
346 | s->device_count = 0; | |
347 | else | |
348 | s->device_count = 1; | |
00ce99ff | 349 | mutex_unlock(&s->ops_mutex); |
d6ff5a85 DB |
350 | |
351 | /* unregister all pcmcia_devices registered with this socket, except leftover */ | |
352 | list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) { | |
353 | if (p_dev == leftover) | |
354 | continue; | |
355 | ||
00ce99ff | 356 | mutex_lock(&s->ops_mutex); |
d6ff5a85 | 357 | list_del(&p_dev->socket_device_list); |
9fea84f4 | 358 | p_dev->_removed = 1; |
00ce99ff | 359 | mutex_unlock(&s->ops_mutex); |
d6ff5a85 | 360 | |
d50dbec3 | 361 | dev_dbg(&p_dev->dev, "unregistering device\n"); |
d6ff5a85 DB |
362 | device_unregister(&p_dev->dev); |
363 | } | |
364 | ||
365 | return; | |
366 | } | |
367 | ||
9fea84f4 | 368 | static int pcmcia_device_remove(struct device *dev) |
1da177e4 LT |
369 | { |
370 | struct pcmcia_device *p_dev; | |
371 | struct pcmcia_driver *p_drv; | |
d6ff5a85 | 372 | struct pcmcia_device_id *did; |
cc3b4866 | 373 | int i; |
1da177e4 | 374 | |
1da177e4 LT |
375 | p_dev = to_pcmcia_dev(dev); |
376 | p_drv = to_pcmcia_drv(dev->driver); | |
d6ff5a85 | 377 | |
d50dbec3 | 378 | dev_dbg(dev, "removing device\n"); |
d9d9ea01 | 379 | |
d6ff5a85 DB |
380 | /* If we're removing the primary module driving a |
381 | * pseudo multi-function card, we need to unbind | |
382 | * all devices | |
383 | */ | |
f3e7a7b6 | 384 | did = dev_get_drvdata(&p_dev->dev); |
b2f51a1c | 385 | if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && |
e6e4f397 | 386 | (p_dev->socket->device_count > 0) && |
d6ff5a85 DB |
387 | (p_dev->device_no == 0)) |
388 | pcmcia_card_remove(p_dev->socket, p_dev); | |
389 | ||
390 | /* detach the "instance" */ | |
f3990715 DB |
391 | if (!p_drv) |
392 | return 0; | |
1da177e4 | 393 | |
f3990715 | 394 | if (p_drv->remove) |
9fea84f4 | 395 | p_drv->remove(p_dev); |
cc3b4866 | 396 | |
a0aab143 DB |
397 | p_dev->dev_node = NULL; |
398 | ||
f3990715 | 399 | /* check for proper unloading */ |
e2d40963 | 400 | if (p_dev->_irq || p_dev->_io || p_dev->_locked) |
ac449d6e DB |
401 | dev_printk(KERN_INFO, dev, |
402 | "pcmcia: driver %s did not release config properly\n", | |
403 | p_drv->drv.name); | |
cc3b4866 | 404 | |
f3990715 | 405 | for (i = 0; i < MAX_WIN; i++) |
e2d40963 | 406 | if (p_dev->_win & CLIENT_WIN_REQ(i)) |
ac449d6e DB |
407 | dev_printk(KERN_INFO, dev, |
408 | "pcmcia: driver %s did not release window properly\n", | |
409 | p_drv->drv.name); | |
cc3b4866 | 410 | |
f3990715 DB |
411 | /* references from pcmcia_probe_device */ |
412 | pcmcia_put_dev(p_dev); | |
413 | module_put(p_drv->owner); | |
1da177e4 LT |
414 | |
415 | return 0; | |
416 | } | |
417 | ||
418 | ||
1da177e4 LT |
419 | /* |
420 | * pcmcia_device_query -- determine information about a pcmcia device | |
421 | */ | |
422 | static int pcmcia_device_query(struct pcmcia_device *p_dev) | |
423 | { | |
424 | cistpl_manfid_t manf_id; | |
425 | cistpl_funcid_t func_id; | |
76fa82fb | 426 | cistpl_vers_1_t *vers1; |
1da177e4 LT |
427 | unsigned int i; |
428 | ||
76fa82fb IM |
429 | vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL); |
430 | if (!vers1) | |
431 | return -ENOMEM; | |
432 | ||
84897fc0 | 433 | if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, |
1da177e4 LT |
434 | CISTPL_MANFID, &manf_id)) { |
435 | p_dev->manf_id = manf_id.manf; | |
436 | p_dev->card_id = manf_id.card; | |
437 | p_dev->has_manf_id = 1; | |
438 | p_dev->has_card_id = 1; | |
439 | } | |
440 | ||
441 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
442 | CISTPL_FUNCID, &func_id)) { | |
443 | p_dev->func_id = func_id.func; | |
444 | p_dev->has_func_id = 1; | |
445 | } else { | |
446 | /* rule of thumb: cards with no FUNCID, but with | |
447 | * common memory device geometry information, are | |
448 | * probably memory cards (from pcmcia-cs) */ | |
76fa82fb IM |
449 | cistpl_device_geo_t *devgeo; |
450 | ||
451 | devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL); | |
452 | if (!devgeo) { | |
453 | kfree(vers1); | |
454 | return -ENOMEM; | |
455 | } | |
1da177e4 | 456 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, |
76fa82fb | 457 | CISTPL_DEVICE_GEO, devgeo)) { |
d50dbec3 | 458 | dev_dbg(&p_dev->dev, |
ac449d6e DB |
459 | "mem device geometry probably means " |
460 | "FUNCID_MEMORY\n"); | |
1da177e4 LT |
461 | p_dev->func_id = CISTPL_FUNCID_MEMORY; |
462 | p_dev->has_func_id = 1; | |
463 | } | |
76fa82fb | 464 | kfree(devgeo); |
1da177e4 LT |
465 | } |
466 | ||
84897fc0 | 467 | if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1, |
76fa82fb | 468 | vers1)) { |
c5e09528 | 469 | for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) { |
1da177e4 LT |
470 | char *tmp; |
471 | unsigned int length; | |
472 | ||
76fa82fb | 473 | tmp = vers1->str + vers1->ofs[i]; |
1da177e4 LT |
474 | |
475 | length = strlen(tmp) + 1; | |
6e3d4f25 | 476 | if ((length < 2) || (length > 255)) |
1da177e4 LT |
477 | continue; |
478 | ||
479 | p_dev->prod_id[i] = kmalloc(sizeof(char) * length, | |
480 | GFP_KERNEL); | |
481 | if (!p_dev->prod_id[i]) | |
482 | continue; | |
483 | ||
484 | p_dev->prod_id[i] = strncpy(p_dev->prod_id[i], | |
485 | tmp, length); | |
486 | } | |
487 | } | |
488 | ||
76fa82fb | 489 | kfree(vers1); |
1da177e4 LT |
490 | return 0; |
491 | } | |
492 | ||
493 | ||
494 | /* device_add_lock is needed to avoid double registration by cardmgr and kernel. | |
495 | * Serializes pcmcia_device_add; will most likely be removed in future. | |
496 | * | |
497 | * While it has the caveat that adding new PCMCIA devices inside(!) device_register() | |
498 | * won't work, this doesn't matter much at the moment: the driver core doesn't | |
499 | * support it either. | |
500 | */ | |
7fe908dd | 501 | static DEFINE_MUTEX(device_add_lock); |
1da177e4 | 502 | |
9fea84f4 | 503 | struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int function) |
1da177e4 | 504 | { |
360b65b9 | 505 | struct pcmcia_device *p_dev, *tmp_dev; |
1da177e4 | 506 | |
dc109497 | 507 | s = pcmcia_get_socket(s); |
1da177e4 LT |
508 | if (!s) |
509 | return NULL; | |
510 | ||
7fe908dd | 511 | mutex_lock(&device_add_lock); |
1da177e4 | 512 | |
d50dbec3 | 513 | pr_debug("adding device to %d, function %d\n", s->sock, function); |
d9d9ea01 | 514 | |
8084b372 | 515 | p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); |
1da177e4 LT |
516 | if (!p_dev) |
517 | goto err_put; | |
1da177e4 | 518 | |
00ce99ff | 519 | mutex_lock(&s->ops_mutex); |
1da177e4 | 520 | p_dev->device_no = (s->device_count++); |
00ce99ff | 521 | mutex_unlock(&s->ops_mutex); |
e6e4f397 DB |
522 | |
523 | /* max of 4 devices per card */ | |
524 | if (p_dev->device_no >= 4) | |
525 | goto err_free; | |
526 | ||
527 | p_dev->socket = s; | |
1da177e4 LT |
528 | p_dev->func = function; |
529 | ||
530 | p_dev->dev.bus = &pcmcia_bus_type; | |
87373318 | 531 | p_dev->dev.parent = s->dev.parent; |
1da177e4 | 532 | p_dev->dev.release = pcmcia_release_dev; |
43d9f7fd JB |
533 | /* by default don't allow DMA */ |
534 | p_dev->dma_mask = DMA_MASK_NONE; | |
535 | p_dev->dev.dma_mask = &p_dev->dma_mask; | |
25096986 KS |
536 | dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no); |
537 | if (!dev_name(&p_dev->dev)) | |
538 | goto err_free; | |
539 | p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev)); | |
bd65a685 BG |
540 | if (!p_dev->devname) |
541 | goto err_free; | |
d50dbec3 | 542 | dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname); |
1da177e4 | 543 | |
00ce99ff | 544 | mutex_lock(&s->ops_mutex); |
360b65b9 DB |
545 | |
546 | /* | |
547 | * p_dev->function_config must be the same for all card functions. | |
548 | * Note that this is serialized by the device_add_lock, so that | |
549 | * only one such struct will be created. | |
550 | */ | |
9fea84f4 DB |
551 | list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list) |
552 | if (p_dev->func == tmp_dev->func) { | |
360b65b9 | 553 | p_dev->function_config = tmp_dev->function_config; |
3e879f61 K |
554 | p_dev->io = tmp_dev->io; |
555 | p_dev->irq = tmp_dev->irq; | |
360b65b9 DB |
556 | kref_get(&p_dev->function_config->ref); |
557 | } | |
558 | ||
559 | /* Add to the list in pcmcia_bus_socket */ | |
6171b88b | 560 | list_add(&p_dev->socket_device_list, &s->devices_list); |
360b65b9 | 561 | |
00ce99ff | 562 | mutex_unlock(&s->ops_mutex); |
1da177e4 | 563 | |
360b65b9 | 564 | if (!p_dev->function_config) { |
d50dbec3 | 565 | dev_dbg(&p_dev->dev, "creating config_t\n"); |
360b65b9 DB |
566 | p_dev->function_config = kzalloc(sizeof(struct config_t), |
567 | GFP_KERNEL); | |
568 | if (!p_dev->function_config) | |
569 | goto err_unreg; | |
570 | kref_init(&p_dev->function_config->ref); | |
571 | } | |
572 | ||
ac449d6e DB |
573 | dev_printk(KERN_NOTICE, &p_dev->dev, |
574 | "pcmcia: registering new device %s\n", | |
575 | p_dev->devname); | |
807277cb | 576 | |
1ad275e3 DB |
577 | pcmcia_device_query(p_dev); |
578 | ||
360b65b9 DB |
579 | if (device_register(&p_dev->dev)) |
580 | goto err_unreg; | |
1da177e4 | 581 | |
7fe908dd | 582 | mutex_unlock(&device_add_lock); |
1da177e4 LT |
583 | |
584 | return p_dev; | |
585 | ||
360b65b9 | 586 | err_unreg: |
00ce99ff | 587 | mutex_lock(&s->ops_mutex); |
360b65b9 | 588 | list_del(&p_dev->socket_device_list); |
00ce99ff | 589 | mutex_unlock(&s->ops_mutex); |
360b65b9 | 590 | |
1da177e4 | 591 | err_free: |
00ce99ff | 592 | mutex_lock(&s->ops_mutex); |
e6e4f397 | 593 | s->device_count--; |
00ce99ff | 594 | mutex_unlock(&s->ops_mutex); |
e6e4f397 | 595 | |
bd65a685 | 596 | kfree(p_dev->devname); |
1da177e4 | 597 | kfree(p_dev); |
1da177e4 | 598 | err_put: |
7fe908dd | 599 | mutex_unlock(&device_add_lock); |
dc109497 | 600 | pcmcia_put_socket(s); |
1da177e4 LT |
601 | |
602 | return NULL; | |
603 | } | |
604 | ||
605 | ||
606 | static int pcmcia_card_add(struct pcmcia_socket *s) | |
607 | { | |
1da177e4 | 608 | cistpl_longlink_mfc_t mfc; |
c5081d5f | 609 | unsigned int no_funcs, i, no_chains; |
1da177e4 LT |
610 | int ret = 0; |
611 | ||
d9d9ea01 | 612 | if (!(s->resource_setup_done)) { |
d50dbec3 | 613 | dev_dbg(&s->dev, |
ac449d6e | 614 | "no resources available, delaying card_add\n"); |
1da177e4 | 615 | return -EAGAIN; /* try again, but later... */ |
d9d9ea01 | 616 | } |
1da177e4 | 617 | |
d9d9ea01 | 618 | if (pcmcia_validate_mem(s)) { |
d50dbec3 | 619 | dev_dbg(&s->dev, "validating mem resources failed, " |
d9d9ea01 | 620 | "delaying card_add\n"); |
de75914e | 621 | return -EAGAIN; /* try again, but later... */ |
d9d9ea01 | 622 | } |
de75914e | 623 | |
84897fc0 | 624 | ret = pccard_validate_cis(s, &no_chains); |
c5081d5f | 625 | if (ret || !no_chains) { |
d50dbec3 | 626 | dev_dbg(&s->dev, "invalid CIS or invalid resources\n"); |
1da177e4 LT |
627 | return -ENODEV; |
628 | } | |
629 | ||
630 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) | |
631 | no_funcs = mfc.nfn; | |
632 | else | |
633 | no_funcs = 1; | |
1d2c9042 | 634 | s->functions = no_funcs; |
1da177e4 | 635 | |
9fea84f4 | 636 | for (i = 0; i < no_funcs; i++) |
dc109497 | 637 | pcmcia_device_add(s, i); |
1da177e4 | 638 | |
9fea84f4 | 639 | return ret; |
1da177e4 LT |
640 | } |
641 | ||
642 | ||
4796b71f | 643 | static void pcmcia_delayed_add_device(struct work_struct *work) |
1ad275e3 | 644 | { |
c4028958 DH |
645 | struct pcmcia_socket *s = |
646 | container_of(work, struct pcmcia_socket, device_add); | |
3d3de32f | 647 | u8 mfc_pfc; |
3d3de32f | 648 | |
00ce99ff | 649 | mutex_lock(&s->ops_mutex); |
3d3de32f | 650 | mfc_pfc = s->pcmcia_state.mfc_pfc; |
b5e43913 | 651 | s->pcmcia_state.device_add_pending = 0; |
1d2c9042 | 652 | s->pcmcia_state.mfc_pfc = 0; |
00ce99ff | 653 | mutex_unlock(&s->ops_mutex); |
3d3de32f DB |
654 | |
655 | dev_dbg(&s->dev, "adding additional device to %d\n", s->sock); | |
656 | pcmcia_device_add(s, mfc_pfc); | |
1ad275e3 DB |
657 | } |
658 | ||
e2f0b534 | 659 | static int pcmcia_requery(struct device *dev, void * _data) |
ff1fa9ef | 660 | { |
e2f0b534 | 661 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
d9d9ea01 | 662 | if (!p_dev->dev.driver) { |
d50dbec3 | 663 | dev_dbg(dev, "update device information\n"); |
e2f0b534 | 664 | pcmcia_device_query(p_dev); |
d9d9ea01 | 665 | } |
e2f0b534 DB |
666 | |
667 | return 0; | |
668 | } | |
669 | ||
4ae1cbf1 | 670 | static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis) |
e2f0b534 | 671 | { |
4ae1cbf1 | 672 | int no_devices = 0; |
f901b8c4 | 673 | int ret = 0; |
e2f0b534 | 674 | |
7fe908dd | 675 | /* must be called with skt_mutex held */ |
d50dbec3 | 676 | dev_dbg(&skt->dev, "re-scanning socket %d\n", skt->sock); |
d9d9ea01 | 677 | |
00ce99ff | 678 | mutex_lock(&skt->ops_mutex); |
dc109497 | 679 | if (list_empty(&skt->devices_list)) |
4ae1cbf1 | 680 | no_devices = 1; |
00ce99ff | 681 | mutex_unlock(&skt->ops_mutex); |
e2f0b534 | 682 | |
4ae1cbf1 DB |
683 | /* If this is because of a CIS override, start over */ |
684 | if (new_cis && !no_devices) | |
685 | pcmcia_card_remove(skt, NULL); | |
686 | ||
e2f0b534 DB |
687 | /* if no devices were added for this socket yet because of |
688 | * missing resource information or other trouble, we need to | |
689 | * do this now. */ | |
4ae1cbf1 | 690 | if (no_devices || new_cis) { |
f901b8c4 | 691 | ret = pcmcia_card_add(skt); |
e2f0b534 DB |
692 | if (ret) |
693 | return; | |
694 | } | |
695 | ||
696 | /* some device information might have changed because of a CIS | |
697 | * update or because we can finally read it correctly... so | |
698 | * determine it again, overwriting old values if necessary. */ | |
699 | bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery); | |
700 | ||
701 | /* we re-scan all devices, not just the ones connected to this | |
702 | * socket. This does not matter, though. */ | |
f901b8c4 DB |
703 | ret = bus_rescan_devices(&pcmcia_bus_type); |
704 | if (ret) | |
705 | printk(KERN_INFO "pcmcia: bus_rescan_devices failed\n"); | |
ff1fa9ef | 706 | } |
1ad275e3 | 707 | |
1d2c9042 DB |
708 | #ifdef CONFIG_PCMCIA_LOAD_CIS |
709 | ||
710 | /** | |
711 | * pcmcia_load_firmware - load CIS from userspace if device-provided is broken | |
78187865 RD |
712 | * @dev: the pcmcia device which needs a CIS override |
713 | * @filename: requested filename in /lib/firmware/ | |
1d2c9042 DB |
714 | * |
715 | * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if | |
716 | * the one provided by the card is broken. The firmware files reside in | |
717 | * /lib/firmware/ in userspace. | |
718 | */ | |
719 | static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) | |
720 | { | |
721 | struct pcmcia_socket *s = dev->socket; | |
722 | const struct firmware *fw; | |
1d2c9042 DB |
723 | int ret = -ENOMEM; |
724 | int no_funcs; | |
725 | int old_funcs; | |
1d2c9042 DB |
726 | cistpl_longlink_mfc_t mfc; |
727 | ||
728 | if (!filename) | |
729 | return -EINVAL; | |
730 | ||
d50dbec3 | 731 | dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename); |
1d2c9042 | 732 | |
ed62acec | 733 | if (request_firmware(&fw, filename, &dev->dev) == 0) { |
d9d9ea01 DB |
734 | if (fw->size >= CISTPL_MAX_CIS_SIZE) { |
735 | ret = -EINVAL; | |
ac449d6e DB |
736 | dev_printk(KERN_ERR, &dev->dev, |
737 | "pcmcia: CIS override is too big\n"); | |
1d2c9042 | 738 | goto release; |
d9d9ea01 | 739 | } |
1d2c9042 | 740 | |
53efec95 | 741 | if (!pcmcia_replace_cis(s, fw->data, fw->size)) |
1d2c9042 | 742 | ret = 0; |
d9d9ea01 | 743 | else { |
ac449d6e DB |
744 | dev_printk(KERN_ERR, &dev->dev, |
745 | "pcmcia: CIS override failed\n"); | |
d9d9ea01 DB |
746 | goto release; |
747 | } | |
748 | ||
1d2c9042 DB |
749 | |
750 | /* update information */ | |
751 | pcmcia_device_query(dev); | |
752 | ||
753 | /* does this cis override add or remove functions? */ | |
754 | old_funcs = s->functions; | |
755 | ||
756 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) | |
757 | no_funcs = mfc.nfn; | |
758 | else | |
759 | no_funcs = 1; | |
760 | s->functions = no_funcs; | |
761 | ||
762 | if (old_funcs > no_funcs) | |
763 | pcmcia_card_remove(s, dev); | |
3d3de32f | 764 | else if (no_funcs > old_funcs) { |
00ce99ff | 765 | mutex_lock(&s->ops_mutex); |
1d2c9042 | 766 | pcmcia_add_device_later(s, 1); |
00ce99ff | 767 | mutex_unlock(&s->ops_mutex); |
3d3de32f | 768 | } |
1d2c9042 DB |
769 | } |
770 | release: | |
771 | release_firmware(fw); | |
772 | ||
9fea84f4 | 773 | return ret; |
1d2c9042 DB |
774 | } |
775 | ||
776 | #else /* !CONFIG_PCMCIA_LOAD_CIS */ | |
777 | ||
778 | static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) | |
779 | { | |
780 | return -ENODEV; | |
781 | } | |
782 | ||
783 | #endif | |
784 | ||
785 | ||
1ad275e3 DB |
786 | static inline int pcmcia_devmatch(struct pcmcia_device *dev, |
787 | struct pcmcia_device_id *did) | |
788 | { | |
789 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { | |
790 | if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) | |
791 | return 0; | |
792 | } | |
793 | ||
794 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { | |
795 | if ((!dev->has_card_id) || (dev->card_id != did->card_id)) | |
796 | return 0; | |
797 | } | |
798 | ||
799 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { | |
800 | if (dev->func != did->function) | |
801 | return 0; | |
802 | } | |
803 | ||
804 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { | |
805 | if (!dev->prod_id[0]) | |
806 | return 0; | |
807 | if (strcmp(did->prod_id[0], dev->prod_id[0])) | |
808 | return 0; | |
809 | } | |
810 | ||
811 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { | |
812 | if (!dev->prod_id[1]) | |
813 | return 0; | |
814 | if (strcmp(did->prod_id[1], dev->prod_id[1])) | |
815 | return 0; | |
816 | } | |
817 | ||
818 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { | |
819 | if (!dev->prod_id[2]) | |
820 | return 0; | |
821 | if (strcmp(did->prod_id[2], dev->prod_id[2])) | |
822 | return 0; | |
823 | } | |
824 | ||
825 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { | |
826 | if (!dev->prod_id[3]) | |
827 | return 0; | |
828 | if (strcmp(did->prod_id[3], dev->prod_id[3])) | |
829 | return 0; | |
830 | } | |
831 | ||
832 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { | |
1ad275e3 DB |
833 | if (dev->device_no != did->device_no) |
834 | return 0; | |
835 | } | |
836 | ||
837 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { | |
838 | if ((!dev->has_func_id) || (dev->func_id != did->func_id)) | |
839 | return 0; | |
840 | ||
841 | /* if this is a pseudo-multi-function device, | |
842 | * we need explicit matches */ | |
843 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) | |
844 | return 0; | |
845 | if (dev->device_no) | |
846 | return 0; | |
847 | ||
848 | /* also, FUNC_ID matching needs to be activated by userspace | |
849 | * after it has re-checked that there is no possible module | |
850 | * with a prod_id/manf_id/card_id match. | |
851 | */ | |
d50dbec3 | 852 | dev_dbg(&dev->dev, |
ac449d6e | 853 | "skipping FUNC_ID match until userspace interaction\n"); |
1ad275e3 DB |
854 | if (!dev->allow_func_id_match) |
855 | return 0; | |
856 | } | |
857 | ||
ea7b3882 | 858 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { |
d50dbec3 | 859 | dev_dbg(&dev->dev, "device needs a fake CIS\n"); |
daa9517d DB |
860 | if (!dev->socket->fake_cis) |
861 | pcmcia_load_firmware(dev, did->cisfile); | |
862 | ||
863 | if (!dev->socket->fake_cis) | |
ea7b3882 | 864 | return 0; |
ea7b3882 DB |
865 | } |
866 | ||
f602ff7e DB |
867 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { |
868 | int i; | |
9fea84f4 | 869 | for (i = 0; i < 4; i++) |
f602ff7e DB |
870 | if (dev->prod_id[i]) |
871 | return 0; | |
872 | if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) | |
873 | return 0; | |
874 | } | |
875 | ||
f3e7a7b6 | 876 | dev_set_drvdata(&dev->dev, did); |
1ad275e3 DB |
877 | |
878 | return 1; | |
879 | } | |
880 | ||
881 | ||
9fea84f4 DB |
882 | static int pcmcia_bus_match(struct device *dev, struct device_driver *drv) |
883 | { | |
884 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
885 | struct pcmcia_driver *p_drv = to_pcmcia_drv(drv); | |
1ad275e3 | 886 | struct pcmcia_device_id *did = p_drv->id_table; |
6179b556 BW |
887 | struct pcmcia_dynid *dynid; |
888 | ||
889 | /* match dynamic devices first */ | |
890 | spin_lock(&p_drv->dynids.lock); | |
891 | list_for_each_entry(dynid, &p_drv->dynids.list, node) { | |
d50dbec3 | 892 | dev_dbg(dev, "trying to match to %s\n", drv->name); |
6179b556 | 893 | if (pcmcia_devmatch(p_dev, &dynid->id)) { |
d50dbec3 | 894 | dev_dbg(dev, "matched to %s\n", drv->name); |
6179b556 BW |
895 | spin_unlock(&p_drv->dynids.lock); |
896 | return 1; | |
897 | } | |
898 | } | |
899 | spin_unlock(&p_drv->dynids.lock); | |
1da177e4 | 900 | |
0e0fad8f | 901 | #ifdef CONFIG_PCMCIA_IOCTL |
1da177e4 | 902 | /* matching by cardmgr */ |
d9d9ea01 | 903 | if (p_dev->cardmgr == p_drv) { |
d50dbec3 | 904 | dev_dbg(dev, "cardmgr matched to %s\n", drv->name); |
1da177e4 | 905 | return 1; |
d9d9ea01 | 906 | } |
0e0fad8f | 907 | #endif |
1da177e4 | 908 | |
1ad275e3 | 909 | while (did && did->match_flags) { |
d50dbec3 | 910 | dev_dbg(dev, "trying to match to %s\n", drv->name); |
d9d9ea01 | 911 | if (pcmcia_devmatch(p_dev, did)) { |
d50dbec3 | 912 | dev_dbg(dev, "matched to %s\n", drv->name); |
1ad275e3 | 913 | return 1; |
d9d9ea01 | 914 | } |
1ad275e3 DB |
915 | did++; |
916 | } | |
917 | ||
1da177e4 LT |
918 | return 0; |
919 | } | |
920 | ||
840c2ac5 DB |
921 | #ifdef CONFIG_HOTPLUG |
922 | ||
7eff2e7a | 923 | static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
840c2ac5 DB |
924 | { |
925 | struct pcmcia_device *p_dev; | |
7eff2e7a | 926 | int i; |
840c2ac5 DB |
927 | u32 hash[4] = { 0, 0, 0, 0}; |
928 | ||
929 | if (!dev) | |
930 | return -ENODEV; | |
931 | ||
932 | p_dev = to_pcmcia_dev(dev); | |
933 | ||
934 | /* calculate hashes */ | |
9fea84f4 | 935 | for (i = 0; i < 4; i++) { |
840c2ac5 DB |
936 | if (!p_dev->prod_id[i]) |
937 | continue; | |
938 | hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); | |
939 | } | |
940 | ||
7eff2e7a | 941 | if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) |
840c2ac5 DB |
942 | return -ENOMEM; |
943 | ||
7eff2e7a | 944 | if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) |
840c2ac5 DB |
945 | return -ENOMEM; |
946 | ||
7eff2e7a | 947 | if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" |
312c004d KS |
948 | "pa%08Xpb%08Xpc%08Xpd%08X", |
949 | p_dev->has_manf_id ? p_dev->manf_id : 0, | |
950 | p_dev->has_card_id ? p_dev->card_id : 0, | |
951 | p_dev->has_func_id ? p_dev->func_id : 0, | |
952 | p_dev->func, | |
953 | p_dev->device_no, | |
954 | hash[0], | |
955 | hash[1], | |
956 | hash[2], | |
957 | hash[3])) | |
840c2ac5 DB |
958 | return -ENOMEM; |
959 | ||
840c2ac5 DB |
960 | return 0; |
961 | } | |
962 | ||
963 | #else | |
964 | ||
7eff2e7a | 965 | static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
840c2ac5 DB |
966 | { |
967 | return -ENODEV; | |
968 | } | |
969 | ||
970 | #endif | |
971 | ||
3f8df781 AS |
972 | /************************ runtime PM support ***************************/ |
973 | ||
974 | static int pcmcia_dev_suspend(struct device *dev, pm_message_t state); | |
975 | static int pcmcia_dev_resume(struct device *dev); | |
976 | ||
977 | static int runtime_suspend(struct device *dev) | |
978 | { | |
979 | int rc; | |
980 | ||
981 | down(&dev->sem); | |
982 | rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND); | |
983 | up(&dev->sem); | |
3f8df781 AS |
984 | return rc; |
985 | } | |
986 | ||
933a838a | 987 | static int runtime_resume(struct device *dev) |
3f8df781 AS |
988 | { |
989 | int rc; | |
990 | ||
991 | down(&dev->sem); | |
992 | rc = pcmcia_dev_resume(dev); | |
993 | up(&dev->sem); | |
933a838a | 994 | return rc; |
3f8df781 AS |
995 | } |
996 | ||
1da177e4 LT |
997 | /************************ per-device sysfs output ***************************/ |
998 | ||
999 | #define pcmcia_device_attr(field, test, format) \ | |
e404e274 | 1000 | static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
1001 | { \ |
1002 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
9fea84f4 | 1003 | return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \ |
1da177e4 LT |
1004 | } |
1005 | ||
1006 | #define pcmcia_device_stringattr(name, field) \ | |
e404e274 | 1007 | static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
1008 | { \ |
1009 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
9fea84f4 | 1010 | return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \ |
1da177e4 LT |
1011 | } |
1012 | ||
1013 | pcmcia_device_attr(func, socket, "0x%02x\n"); | |
1014 | pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); | |
1015 | pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); | |
1016 | pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); | |
1017 | pcmcia_device_stringattr(prod_id1, prod_id[0]); | |
1018 | pcmcia_device_stringattr(prod_id2, prod_id[1]); | |
1019 | pcmcia_device_stringattr(prod_id3, prod_id[2]); | |
1020 | pcmcia_device_stringattr(prod_id4, prod_id[3]); | |
1021 | ||
db1019ca DB |
1022 | |
1023 | static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf) | |
1024 | { | |
1025 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1026 | ||
f6fbe01a | 1027 | if (p_dev->suspended) |
db1019ca DB |
1028 | return sprintf(buf, "off\n"); |
1029 | else | |
1030 | return sprintf(buf, "on\n"); | |
1031 | } | |
1032 | ||
1033 | static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr, | |
1034 | const char *buf, size_t count) | |
1035 | { | |
1036 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1037 | int ret = 0; | |
1038 | ||
9fea84f4 DB |
1039 | if (!count) |
1040 | return -EINVAL; | |
db1019ca | 1041 | |
f6fbe01a | 1042 | if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) |
3f8df781 | 1043 | ret = runtime_suspend(dev); |
f6fbe01a | 1044 | else if (p_dev->suspended && !strncmp(buf, "on", 2)) |
933a838a | 1045 | ret = runtime_resume(dev); |
db1019ca DB |
1046 | |
1047 | return ret ? ret : count; | |
1048 | } | |
1049 | ||
1050 | ||
3704511b | 1051 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
3248ff43 DB |
1052 | { |
1053 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1054 | int i; | |
1055 | u32 hash[4] = { 0, 0, 0, 0}; | |
1056 | ||
1057 | /* calculate hashes */ | |
9fea84f4 | 1058 | for (i = 0; i < 4; i++) { |
3248ff43 DB |
1059 | if (!p_dev->prod_id[i]) |
1060 | continue; | |
9fea84f4 DB |
1061 | hash[i] = crc32(0, p_dev->prod_id[i], |
1062 | strlen(p_dev->prod_id[i])); | |
3248ff43 DB |
1063 | } |
1064 | return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" | |
1065 | "pa%08Xpb%08Xpc%08Xpd%08X\n", | |
1066 | p_dev->has_manf_id ? p_dev->manf_id : 0, | |
1067 | p_dev->has_card_id ? p_dev->card_id : 0, | |
1068 | p_dev->has_func_id ? p_dev->func_id : 0, | |
1069 | p_dev->func, p_dev->device_no, | |
1070 | hash[0], hash[1], hash[2], hash[3]); | |
1071 | } | |
a5b55778 | 1072 | |
3248ff43 DB |
1073 | static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, |
1074 | struct device_attribute *attr, const char *buf, size_t count) | |
a5b55778 DB |
1075 | { |
1076 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
f901b8c4 | 1077 | int ret; |
db1019ca DB |
1078 | |
1079 | if (!count) | |
1080 | return -EINVAL; | |
a5b55778 | 1081 | |
7fe908dd | 1082 | mutex_lock(&p_dev->socket->skt_mutex); |
a5b55778 | 1083 | p_dev->allow_func_id_match = 1; |
7fe908dd | 1084 | mutex_unlock(&p_dev->socket->skt_mutex); |
a5b55778 | 1085 | |
f901b8c4 DB |
1086 | ret = bus_rescan_devices(&pcmcia_bus_type); |
1087 | if (ret) | |
1088 | printk(KERN_INFO "pcmcia: bus_rescan_devices failed after " | |
1089 | "allowing func_id matches\n"); | |
a5b55778 DB |
1090 | |
1091 | return count; | |
1092 | } | |
1093 | ||
1da177e4 LT |
1094 | static struct device_attribute pcmcia_dev_attrs[] = { |
1095 | __ATTR(function, 0444, func_show, NULL), | |
db1019ca | 1096 | __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state), |
1da177e4 LT |
1097 | __ATTR_RO(func_id), |
1098 | __ATTR_RO(manf_id), | |
1099 | __ATTR_RO(card_id), | |
1100 | __ATTR_RO(prod_id1), | |
1101 | __ATTR_RO(prod_id2), | |
1102 | __ATTR_RO(prod_id3), | |
1103 | __ATTR_RO(prod_id4), | |
3248ff43 | 1104 | __ATTR_RO(modalias), |
a5b55778 | 1105 | __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), |
1da177e4 LT |
1106 | __ATTR_NULL, |
1107 | }; | |
1108 | ||
8e9e793d DB |
1109 | /* PM support, also needed for reset */ |
1110 | ||
9fea84f4 | 1111 | static int pcmcia_dev_suspend(struct device *dev, pm_message_t state) |
8e9e793d DB |
1112 | { |
1113 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1114 | struct pcmcia_driver *p_drv = NULL; | |
f6fbe01a | 1115 | int ret = 0; |
8e9e793d | 1116 | |
d6b4fa6d DB |
1117 | if (p_dev->suspended) |
1118 | return 0; | |
1119 | ||
d50dbec3 | 1120 | dev_dbg(dev, "suspending\n"); |
d9d9ea01 | 1121 | |
8e9e793d DB |
1122 | if (dev->driver) |
1123 | p_drv = to_pcmcia_drv(dev->driver); | |
1124 | ||
e2d40963 DB |
1125 | if (!p_drv) |
1126 | goto out; | |
1127 | ||
1128 | if (p_drv->suspend) { | |
8661bb5b | 1129 | ret = p_drv->suspend(p_dev); |
d9d9ea01 | 1130 | if (ret) { |
ac449d6e DB |
1131 | dev_printk(KERN_ERR, dev, |
1132 | "pcmcia: device %s (driver %s) did " | |
1133 | "not want to go to sleep (%d)\n", | |
1134 | p_dev->devname, p_drv->drv.name, ret); | |
f6fbe01a | 1135 | goto out; |
d9d9ea01 | 1136 | } |
8661bb5b | 1137 | } |
8e9e793d | 1138 | |
d9d9ea01 | 1139 | if (p_dev->device_no == p_dev->func) { |
d50dbec3 | 1140 | dev_dbg(dev, "releasing configuration\n"); |
e2d40963 | 1141 | pcmcia_release_configuration(p_dev); |
d9d9ea01 | 1142 | } |
e2d40963 | 1143 | |
f6fbe01a DB |
1144 | out: |
1145 | if (!ret) | |
1146 | p_dev->suspended = 1; | |
1147 | return ret; | |
8e9e793d DB |
1148 | } |
1149 | ||
1150 | ||
9fea84f4 | 1151 | static int pcmcia_dev_resume(struct device *dev) |
8e9e793d DB |
1152 | { |
1153 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
9fea84f4 | 1154 | struct pcmcia_driver *p_drv = NULL; |
f6fbe01a | 1155 | int ret = 0; |
8e9e793d | 1156 | |
d6b4fa6d DB |
1157 | if (!p_dev->suspended) |
1158 | return 0; | |
1159 | ||
d50dbec3 | 1160 | dev_dbg(dev, "resuming\n"); |
d9d9ea01 | 1161 | |
8e9e793d DB |
1162 | if (dev->driver) |
1163 | p_drv = to_pcmcia_drv(dev->driver); | |
1164 | ||
e2d40963 DB |
1165 | if (!p_drv) |
1166 | goto out; | |
1167 | ||
1168 | if (p_dev->device_no == p_dev->func) { | |
d50dbec3 | 1169 | dev_dbg(dev, "requesting configuration\n"); |
e2d40963 DB |
1170 | ret = pcmcia_request_configuration(p_dev, &p_dev->conf); |
1171 | if (ret) | |
1172 | goto out; | |
8661bb5b | 1173 | } |
8e9e793d | 1174 | |
e2d40963 DB |
1175 | if (p_drv->resume) |
1176 | ret = p_drv->resume(p_dev); | |
1177 | ||
f6fbe01a DB |
1178 | out: |
1179 | if (!ret) | |
1180 | p_dev->suspended = 0; | |
1181 | return ret; | |
8e9e793d DB |
1182 | } |
1183 | ||
1184 | ||
1185 | static int pcmcia_bus_suspend_callback(struct device *dev, void * _data) | |
1186 | { | |
1187 | struct pcmcia_socket *skt = _data; | |
1188 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1189 | ||
3f8df781 | 1190 | if (p_dev->socket != skt || p_dev->suspended) |
8e9e793d DB |
1191 | return 0; |
1192 | ||
3f8df781 | 1193 | return runtime_suspend(dev); |
8e9e793d DB |
1194 | } |
1195 | ||
1196 | static int pcmcia_bus_resume_callback(struct device *dev, void * _data) | |
1197 | { | |
1198 | struct pcmcia_socket *skt = _data; | |
1199 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1200 | ||
3f8df781 | 1201 | if (p_dev->socket != skt || !p_dev->suspended) |
8e9e793d DB |
1202 | return 0; |
1203 | ||
3f8df781 | 1204 | runtime_resume(dev); |
8e9e793d DB |
1205 | |
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | static int pcmcia_bus_resume(struct pcmcia_socket *skt) | |
1210 | { | |
d50dbec3 | 1211 | dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock); |
8e9e793d DB |
1212 | bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); |
1213 | return 0; | |
1214 | } | |
1215 | ||
1216 | static int pcmcia_bus_suspend(struct pcmcia_socket *skt) | |
1217 | { | |
d50dbec3 | 1218 | dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock); |
8e9e793d DB |
1219 | if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, |
1220 | pcmcia_bus_suspend_callback)) { | |
1221 | pcmcia_bus_resume(skt); | |
1222 | return -EIO; | |
1223 | } | |
1224 | return 0; | |
1225 | } | |
1226 | ||
1da177e4 | 1227 | |
1da177e4 LT |
1228 | /*====================================================================== |
1229 | ||
1230 | The card status event handler. | |
9fea84f4 | 1231 | |
1da177e4 LT |
1232 | ======================================================================*/ |
1233 | ||
1da177e4 LT |
1234 | /* Normally, the event is passed to individual drivers after |
1235 | * informing userspace. Only for CS_EVENT_CARD_REMOVAL this | |
1236 | * is inversed to maintain historic compatibility. | |
1237 | */ | |
1238 | ||
1239 | static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) | |
1240 | { | |
dc109497 | 1241 | struct pcmcia_socket *s = pcmcia_get_socket(skt); |
1da177e4 | 1242 | |
1617406a | 1243 | if (!s) { |
ac449d6e DB |
1244 | dev_printk(KERN_ERR, &skt->dev, |
1245 | "PCMCIA obtaining reference to socket " \ | |
1246 | "failed, event 0x%x lost!\n", event); | |
1617406a FM |
1247 | return -ENODEV; |
1248 | } | |
1249 | ||
d50dbec3 | 1250 | dev_dbg(&skt->dev, "ds_event(0x%06x, %d, 0x%p)\n", |
ac449d6e | 1251 | event, priority, skt); |
1da177e4 | 1252 | |
f8cfa618 | 1253 | switch (event) { |
1da177e4 | 1254 | case CS_EVENT_CARD_REMOVAL: |
00ce99ff | 1255 | mutex_lock(&s->ops_mutex); |
b5e43913 | 1256 | s->pcmcia_state.present = 0; |
00ce99ff | 1257 | mutex_unlock(&s->ops_mutex); |
d6ff5a85 | 1258 | pcmcia_card_remove(skt, NULL); |
dc109497 | 1259 | handle_event(skt, event); |
8680c4b3 | 1260 | mutex_lock(&s->ops_mutex); |
180c33ee | 1261 | destroy_cis_cache(s); |
8680c4b3 | 1262 | mutex_unlock(&s->ops_mutex); |
1da177e4 | 1263 | break; |
f8cfa618 | 1264 | |
1da177e4 | 1265 | case CS_EVENT_CARD_INSERTION: |
8680c4b3 | 1266 | mutex_lock(&s->ops_mutex); |
00ce99ff | 1267 | s->pcmcia_state.present = 1; |
180c33ee | 1268 | destroy_cis_cache(s); /* to be on the safe side... */ |
8680c4b3 | 1269 | mutex_unlock(&s->ops_mutex); |
1da177e4 | 1270 | pcmcia_card_add(skt); |
dc109497 | 1271 | handle_event(skt, event); |
1da177e4 LT |
1272 | break; |
1273 | ||
1274 | case CS_EVENT_EJECTION_REQUEST: | |
1da177e4 LT |
1275 | break; |
1276 | ||
8e9e793d | 1277 | case CS_EVENT_PM_RESUME: |
88b060d6 DB |
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); | |
8680c4b3 | 1282 | mutex_lock(&s->ops_mutex); |
88b060d6 DB |
1283 | destroy_cis_cache(skt); |
1284 | kfree(skt->fake_cis); | |
1285 | skt->fake_cis = NULL; | |
8680c4b3 | 1286 | mutex_unlock(&s->ops_mutex); |
88b060d6 DB |
1287 | /* now, add the new card */ |
1288 | ds_event(skt, CS_EVENT_CARD_INSERTION, | |
1289 | CS_EVENT_PRI_LOW); | |
1290 | } | |
1291 | handle_event(skt, event); | |
1292 | break; | |
1293 | ||
1294 | case CS_EVENT_PM_SUSPEND: | |
8e9e793d DB |
1295 | case CS_EVENT_RESET_PHYSICAL: |
1296 | case CS_EVENT_CARD_RESET: | |
1da177e4 | 1297 | default: |
dc109497 | 1298 | handle_event(skt, event); |
1da177e4 LT |
1299 | break; |
1300 | } | |
1301 | ||
dc109497 DB |
1302 | pcmcia_put_socket(s); |
1303 | ||
1da177e4 LT |
1304 | return 0; |
1305 | } /* ds_event */ | |
1306 | ||
1307 | ||
9fea84f4 | 1308 | struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev) |
9940ec36 DB |
1309 | { |
1310 | struct pcmcia_device *p_dev; | |
1311 | struct pcmcia_device *ret = NULL; | |
1312 | ||
1313 | p_dev = pcmcia_get_dev(_p_dev); | |
1314 | if (!p_dev) | |
1315 | return NULL; | |
1316 | ||
00ce99ff | 1317 | mutex_lock(&p_dev->socket->ops_mutex); |
9940ec36 DB |
1318 | if (!p_dev->socket->pcmcia_state.present) |
1319 | goto out; | |
1320 | ||
3d3de32f DB |
1321 | if (p_dev->socket->pcmcia_state.dead) |
1322 | goto out; | |
1323 | ||
9940ec36 DB |
1324 | if (p_dev->_removed) |
1325 | goto out; | |
1326 | ||
1327 | if (p_dev->suspended) | |
1328 | goto out; | |
1329 | ||
1330 | ret = p_dev; | |
1331 | out: | |
00ce99ff | 1332 | mutex_unlock(&p_dev->socket->ops_mutex); |
9940ec36 DB |
1333 | pcmcia_put_dev(p_dev); |
1334 | return ret; | |
1335 | } | |
1336 | EXPORT_SYMBOL(pcmcia_dev_present); | |
1337 | ||
1338 | ||
90c6cdd1 DB |
1339 | static struct pcmcia_callback pcmcia_bus_callback = { |
1340 | .owner = THIS_MODULE, | |
1341 | .event = ds_event, | |
1342 | .requery = pcmcia_bus_rescan, | |
6e7b51a7 | 1343 | .validate = pccard_validate_cis, |
8e9e793d DB |
1344 | .suspend = pcmcia_bus_suspend, |
1345 | .resume = pcmcia_bus_resume, | |
90c6cdd1 DB |
1346 | }; |
1347 | ||
87373318 | 1348 | static int __devinit pcmcia_bus_add_socket(struct device *dev, |
d8539d81 | 1349 | struct class_interface *class_intf) |
1da177e4 | 1350 | { |
87373318 | 1351 | struct pcmcia_socket *socket = dev_get_drvdata(dev); |
1da177e4 LT |
1352 | int ret; |
1353 | ||
dc109497 DB |
1354 | socket = pcmcia_get_socket(socket); |
1355 | if (!socket) { | |
ac449d6e DB |
1356 | dev_printk(KERN_ERR, dev, |
1357 | "PCMCIA obtaining reference to socket failed\n"); | |
1da177e4 LT |
1358 | return -ENODEV; |
1359 | } | |
1360 | ||
1da177e4 LT |
1361 | /* |
1362 | * Ugly. But we want to wait for the socket threads to have started up. | |
1363 | * We really should let the drivers themselves drive some of this.. | |
1364 | */ | |
1365 | msleep(250); | |
1366 | ||
6e7b51a7 DB |
1367 | ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr); |
1368 | if (ret) { | |
1369 | dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); | |
1370 | pcmcia_put_socket(socket); | |
1371 | return ret; | |
1372 | } | |
1373 | ||
e7a480d2 | 1374 | #ifdef CONFIG_PCMCIA_IOCTL |
dc109497 | 1375 | init_waitqueue_head(&socket->queue); |
e7a480d2 | 1376 | #endif |
dc109497 | 1377 | INIT_LIST_HEAD(&socket->devices_list); |
4796b71f | 1378 | INIT_WORK(&socket->device_add, pcmcia_delayed_add_device); |
dc109497 DB |
1379 | memset(&socket->pcmcia_state, 0, sizeof(u8)); |
1380 | socket->device_count = 0; | |
1da177e4 | 1381 | |
90c6cdd1 | 1382 | ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); |
1da177e4 | 1383 | if (ret) { |
ac449d6e | 1384 | dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); |
dc109497 | 1385 | pcmcia_put_socket(socket); |
9fea84f4 | 1386 | return ret; |
1da177e4 LT |
1387 | } |
1388 | ||
1389 | return 0; | |
1390 | } | |
1391 | ||
87373318 | 1392 | static void pcmcia_bus_remove_socket(struct device *dev, |
d8539d81 | 1393 | struct class_interface *class_intf) |
1da177e4 | 1394 | { |
87373318 | 1395 | struct pcmcia_socket *socket = dev_get_drvdata(dev); |
1da177e4 | 1396 | |
dc109497 | 1397 | if (!socket) |
1da177e4 LT |
1398 | return; |
1399 | ||
00ce99ff | 1400 | mutex_lock(&socket->ops_mutex); |
dc109497 | 1401 | socket->pcmcia_state.dead = 1; |
00ce99ff | 1402 | mutex_unlock(&socket->ops_mutex); |
3d3de32f | 1403 | |
1da177e4 LT |
1404 | pccard_register_pcmcia(socket, NULL); |
1405 | ||
dfbc9e9d | 1406 | /* unregister any unbound devices */ |
8e4d9dcb | 1407 | mutex_lock(&socket->skt_mutex); |
dfbc9e9d | 1408 | pcmcia_card_remove(socket, NULL); |
180c33ee | 1409 | release_cis_mem(socket); |
8e4d9dcb | 1410 | mutex_unlock(&socket->skt_mutex); |
dfbc9e9d | 1411 | |
6e7b51a7 DB |
1412 | sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr); |
1413 | ||
dc109497 | 1414 | pcmcia_put_socket(socket); |
1da177e4 LT |
1415 | |
1416 | return; | |
1417 | } | |
1418 | ||
1419 | ||
1420 | /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ | |
ed49f5d0 | 1421 | static struct class_interface pcmcia_bus_interface __refdata = { |
1da177e4 | 1422 | .class = &pcmcia_socket_class, |
87373318 GKH |
1423 | .add_dev = &pcmcia_bus_add_socket, |
1424 | .remove_dev = &pcmcia_bus_remove_socket, | |
1da177e4 LT |
1425 | }; |
1426 | ||
1427 | ||
e7a480d2 | 1428 | struct bus_type pcmcia_bus_type = { |
1da177e4 | 1429 | .name = "pcmcia", |
312c004d | 1430 | .uevent = pcmcia_bus_uevent, |
1da177e4 LT |
1431 | .match = pcmcia_bus_match, |
1432 | .dev_attrs = pcmcia_dev_attrs, | |
1d0baa3a RK |
1433 | .probe = pcmcia_device_probe, |
1434 | .remove = pcmcia_device_remove, | |
8e9e793d DB |
1435 | .suspend = pcmcia_dev_suspend, |
1436 | .resume = pcmcia_dev_resume, | |
1da177e4 | 1437 | }; |
1da177e4 LT |
1438 | |
1439 | ||
1440 | static int __init init_pcmcia_bus(void) | |
1441 | { | |
ace7d477 RD |
1442 | int ret; |
1443 | ||
ace7d477 RD |
1444 | ret = bus_register(&pcmcia_bus_type); |
1445 | if (ret < 0) { | |
1446 | printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret); | |
1447 | return ret; | |
1448 | } | |
1449 | ret = class_interface_register(&pcmcia_bus_interface); | |
1450 | if (ret < 0) { | |
1451 | printk(KERN_WARNING | |
1452 | "pcmcia: class_interface_register error: %d\n", ret); | |
1453 | bus_unregister(&pcmcia_bus_type); | |
1454 | return ret; | |
1455 | } | |
1da177e4 | 1456 | |
e7a480d2 | 1457 | pcmcia_setup_ioctl(); |
1da177e4 LT |
1458 | |
1459 | return 0; | |
1460 | } | |
9fea84f4 | 1461 | fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that |
1da177e4 LT |
1462 | * pcmcia_socket_class is already registered */ |
1463 | ||
1464 | ||
1465 | static void __exit exit_pcmcia_bus(void) | |
1466 | { | |
e7a480d2 | 1467 | pcmcia_cleanup_ioctl(); |
1da177e4 | 1468 | |
e7a480d2 | 1469 | class_interface_unregister(&pcmcia_bus_interface); |
1da177e4 LT |
1470 | |
1471 | bus_unregister(&pcmcia_bus_type); | |
1472 | } | |
1473 | module_exit(exit_pcmcia_bus); | |
1474 | ||
1475 | ||
1da177e4 | 1476 | MODULE_ALIAS("ds"); |