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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/cistpl.h> |
30 | #include <pcmcia/ds.h> | |
31 | #include <pcmcia/ss.h> | |
32 | ||
33 | #include "cs_internal.h" | |
34 | ||
35 | /*====================================================================*/ | |
36 | ||
37 | /* Module parameters */ | |
38 | ||
39 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
40 | MODULE_DESCRIPTION("PCMCIA Driver Services"); | |
41 | MODULE_LICENSE("GPL"); | |
42 | ||
1da177e4 | 43 | |
1da177e4 LT |
44 | /*====================================================================*/ |
45 | ||
23a83bfe DB |
46 | static void pcmcia_check_driver(struct pcmcia_driver *p_drv) |
47 | { | |
48 | struct pcmcia_device_id *did = p_drv->id_table; | |
49 | unsigned int i; | |
50 | u32 hash; | |
51 | ||
f8cfa618 | 52 | if (!p_drv->probe || !p_drv->remove) |
ba5bb6b5 | 53 | printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback " |
2e9b981a | 54 | "function\n", p_drv->name); |
1e212f36 | 55 | |
23a83bfe | 56 | while (did && did->match_flags) { |
9fea84f4 | 57 | for (i = 0; i < 4; i++) { |
23a83bfe DB |
58 | if (!did->prod_id[i]) |
59 | continue; | |
60 | ||
61 | hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i])); | |
62 | if (hash == did->prod_id_hash[i]) | |
63 | continue; | |
64 | ||
65 | printk(KERN_DEBUG "pcmcia: %s: invalid hash for " | |
66 | "product string \"%s\": is 0x%x, should " | |
2e9b981a | 67 | "be 0x%x\n", p_drv->name, did->prod_id[i], |
23a83bfe | 68 | did->prod_id_hash[i], hash); |
5085cb26 DB |
69 | printk(KERN_DEBUG "pcmcia: see " |
70 | "Documentation/pcmcia/devicetable.txt for " | |
71 | "details\n"); | |
23a83bfe DB |
72 | } |
73 | did++; | |
74 | } | |
75 | ||
76 | return; | |
77 | } | |
78 | ||
daa9517d | 79 | |
1da177e4 LT |
80 | /*======================================================================*/ |
81 | ||
1da177e4 | 82 | |
6179b556 BW |
83 | struct pcmcia_dynid { |
84 | struct list_head node; | |
85 | struct pcmcia_device_id id; | |
86 | }; | |
87 | ||
88 | /** | |
89 | * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices | |
90 | * @driver: target device driver | |
91 | * @buf: buffer for scanning device ID data | |
92 | * @count: input size | |
93 | * | |
94 | * Adds a new dynamic PCMCIA device ID to this driver, | |
95 | * and causes the driver to probe for all devices again. | |
96 | */ | |
97 | static ssize_t | |
98 | pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count) | |
99 | { | |
100 | struct pcmcia_dynid *dynid; | |
101 | struct pcmcia_driver *pdrv = to_pcmcia_drv(driver); | |
102 | __u16 match_flags, manf_id, card_id; | |
103 | __u8 func_id, function, device_no; | |
104 | __u32 prod_id_hash[4] = {0, 0, 0, 0}; | |
9fea84f4 | 105 | int fields = 0; |
6179b556 BW |
106 | int retval = 0; |
107 | ||
108 | fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x", | |
109 | &match_flags, &manf_id, &card_id, &func_id, &function, &device_no, | |
110 | &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]); | |
111 | if (fields < 6) | |
112 | return -EINVAL; | |
113 | ||
114 | dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL); | |
115 | if (!dynid) | |
116 | return -ENOMEM; | |
117 | ||
6179b556 BW |
118 | dynid->id.match_flags = match_flags; |
119 | dynid->id.manf_id = manf_id; | |
120 | dynid->id.card_id = card_id; | |
121 | dynid->id.func_id = func_id; | |
122 | dynid->id.function = function; | |
123 | dynid->id.device_no = device_no; | |
124 | memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4); | |
125 | ||
3f565232 | 126 | mutex_lock(&pdrv->dynids.lock); |
b4b3d7bb | 127 | list_add_tail(&dynid->node, &pdrv->dynids.list); |
3f565232 | 128 | mutex_unlock(&pdrv->dynids.lock); |
6179b556 BW |
129 | |
130 | if (get_driver(&pdrv->drv)) { | |
131 | retval = driver_attach(&pdrv->drv); | |
132 | put_driver(&pdrv->drv); | |
133 | } | |
134 | ||
135 | if (retval) | |
136 | return retval; | |
137 | return count; | |
138 | } | |
139 | static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id); | |
140 | ||
141 | static void | |
142 | pcmcia_free_dynids(struct pcmcia_driver *drv) | |
143 | { | |
144 | struct pcmcia_dynid *dynid, *n; | |
145 | ||
3f565232 | 146 | mutex_lock(&drv->dynids.lock); |
6179b556 BW |
147 | list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { |
148 | list_del(&dynid->node); | |
149 | kfree(dynid); | |
150 | } | |
3f565232 | 151 | mutex_unlock(&drv->dynids.lock); |
6179b556 BW |
152 | } |
153 | ||
154 | static int | |
155 | pcmcia_create_newid_file(struct pcmcia_driver *drv) | |
156 | { | |
157 | int error = 0; | |
158 | if (drv->probe != NULL) | |
2344c6de | 159 | error = driver_create_file(&drv->drv, &driver_attr_new_id); |
6179b556 BW |
160 | return error; |
161 | } | |
162 | ||
163 | ||
1da177e4 LT |
164 | /** |
165 | * pcmcia_register_driver - register a PCMCIA driver with the bus core | |
78187865 | 166 | * @driver: the &driver being registered |
1da177e4 LT |
167 | * |
168 | * Registers a PCMCIA driver with the PCMCIA bus core. | |
169 | */ | |
1da177e4 LT |
170 | int pcmcia_register_driver(struct pcmcia_driver *driver) |
171 | { | |
6179b556 BW |
172 | int error; |
173 | ||
1da177e4 LT |
174 | if (!driver) |
175 | return -EINVAL; | |
176 | ||
23a83bfe DB |
177 | pcmcia_check_driver(driver); |
178 | ||
1da177e4 LT |
179 | /* initialize common fields */ |
180 | driver->drv.bus = &pcmcia_bus_type; | |
181 | driver->drv.owner = driver->owner; | |
2e9b981a | 182 | driver->drv.name = driver->name; |
3f565232 | 183 | mutex_init(&driver->dynids.lock); |
6179b556 | 184 | INIT_LIST_HEAD(&driver->dynids.list); |
1da177e4 | 185 | |
2e9b981a | 186 | pr_debug("registering driver %s\n", driver->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 | { | |
2e9b981a | 206 | pr_debug("unregistering driver %s\n", driver->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 | ||
5716d415 | 215 | static 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 | ||
5716d415 | 224 | static 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); | |
44961a03 | 240 | int i; |
d50dbec3 | 241 | dev_dbg(dev, "releasing device\n"); |
dc109497 | 242 | pcmcia_put_socket(p_dev->socket); |
44961a03 DB |
243 | for (i = 0; i < 4; i++) |
244 | kfree(p_dev->prod_id[i]); | |
bd65a685 | 245 | kfree(p_dev->devname); |
360b65b9 | 246 | kref_put(&p_dev->function_config->ref, pcmcia_release_function); |
1da177e4 LT |
247 | kfree(p_dev); |
248 | } | |
249 | ||
250 | ||
9fea84f4 | 251 | static int pcmcia_device_probe(struct device *dev) |
1da177e4 LT |
252 | { |
253 | struct pcmcia_device *p_dev; | |
254 | struct pcmcia_driver *p_drv; | |
f8cfa618 | 255 | struct pcmcia_socket *s; |
af2b3b50 | 256 | cistpl_config_t cis_config; |
1da177e4 LT |
257 | int ret = 0; |
258 | ||
259 | dev = get_device(dev); | |
260 | if (!dev) | |
261 | return -ENODEV; | |
262 | ||
263 | p_dev = to_pcmcia_dev(dev); | |
264 | p_drv = to_pcmcia_drv(dev->driver); | |
f8cfa618 | 265 | s = p_dev->socket; |
1da177e4 | 266 | |
2e9b981a | 267 | dev_dbg(dev, "trying to bind to %s\n", p_drv->name); |
d9d9ea01 | 268 | |
360b65b9 DB |
269 | if ((!p_drv->probe) || (!p_dev->function_config) || |
270 | (!try_module_get(p_drv->owner))) { | |
1da177e4 LT |
271 | ret = -EINVAL; |
272 | goto put_dev; | |
273 | } | |
274 | ||
af2b3b50 DB |
275 | /* set up some more device information */ |
276 | ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG, | |
277 | &cis_config); | |
278 | if (!ret) { | |
7feabb64 DB |
279 | p_dev->config_base = cis_config.base; |
280 | p_dev->config_regs = cis_config.rmask[0]; | |
1cc745d1 DB |
281 | dev_dbg(dev, "base %x, regs %x", p_dev->config_base, |
282 | p_dev->config_regs); | |
af2b3b50 | 283 | } else { |
ac449d6e DB |
284 | dev_printk(KERN_INFO, dev, |
285 | "pcmcia: could not parse base and rmask0 of CIS\n"); | |
7feabb64 DB |
286 | p_dev->config_base = 0; |
287 | p_dev->config_regs = 0; | |
af2b3b50 DB |
288 | } |
289 | ||
f8cfa618 | 290 | ret = p_drv->probe(p_dev); |
d9d9ea01 | 291 | if (ret) { |
d50dbec3 | 292 | dev_dbg(dev, "binding to %s failed with %d\n", |
2e9b981a | 293 | p_drv->name, ret); |
82d56e6d | 294 | goto put_module; |
d9d9ea01 | 295 | } |
2e9b981a | 296 | dev_dbg(dev, "%s bound: Vpp %d.%d, idx %x, IRQ %d", p_drv->name, |
1cc745d1 DB |
297 | p_dev->vpp/10, p_dev->vpp%10, p_dev->config_index, p_dev->irq); |
298 | dev_dbg(dev, "resources: ioport %pR %pR iomem %pR %pR %pR", | |
299 | p_dev->resource[0], p_dev->resource[1], p_dev->resource[2], | |
300 | p_dev->resource[3], p_dev->resource[4]); | |
82d56e6d | 301 | |
00ce99ff | 302 | mutex_lock(&s->ops_mutex); |
ce3f9d71 | 303 | if ((s->pcmcia_pfc) && |
82d56e6d | 304 | (p_dev->socket->device_count == 1) && (p_dev->device_no == 0)) |
aa584ca4 | 305 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); |
00ce99ff | 306 | mutex_unlock(&s->ops_mutex); |
f8cfa618 | 307 | |
cec5eb7b | 308 | put_module: |
1da177e4 LT |
309 | if (ret) |
310 | module_put(p_drv->owner); | |
cec5eb7b | 311 | put_dev: |
f8cfa618 | 312 | if (ret) |
1da177e4 | 313 | put_device(dev); |
9fea84f4 | 314 | return ret; |
1da177e4 LT |
315 | } |
316 | ||
317 | ||
d6ff5a85 DB |
318 | /* |
319 | * Removes a PCMCIA card from the device tree and socket list. | |
320 | */ | |
321 | static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover) | |
322 | { | |
323 | struct pcmcia_device *p_dev; | |
324 | struct pcmcia_device *tmp; | |
d6ff5a85 | 325 | |
d50dbec3 | 326 | dev_dbg(leftover ? &leftover->dev : &s->dev, |
ac449d6e DB |
327 | "pcmcia_card_remove(%d) %s\n", s->sock, |
328 | leftover ? leftover->devname : ""); | |
d6ff5a85 | 329 | |
00ce99ff | 330 | mutex_lock(&s->ops_mutex); |
d6ff5a85 DB |
331 | if (!leftover) |
332 | s->device_count = 0; | |
333 | else | |
334 | s->device_count = 1; | |
00ce99ff | 335 | mutex_unlock(&s->ops_mutex); |
d6ff5a85 DB |
336 | |
337 | /* unregister all pcmcia_devices registered with this socket, except leftover */ | |
338 | list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) { | |
339 | if (p_dev == leftover) | |
340 | continue; | |
341 | ||
00ce99ff | 342 | mutex_lock(&s->ops_mutex); |
d6ff5a85 | 343 | list_del(&p_dev->socket_device_list); |
00ce99ff | 344 | mutex_unlock(&s->ops_mutex); |
d6ff5a85 | 345 | |
d50dbec3 | 346 | dev_dbg(&p_dev->dev, "unregistering device\n"); |
d6ff5a85 DB |
347 | device_unregister(&p_dev->dev); |
348 | } | |
349 | ||
350 | return; | |
351 | } | |
352 | ||
9fea84f4 | 353 | static int pcmcia_device_remove(struct device *dev) |
1da177e4 LT |
354 | { |
355 | struct pcmcia_device *p_dev; | |
356 | struct pcmcia_driver *p_drv; | |
cc3b4866 | 357 | int i; |
1da177e4 | 358 | |
1da177e4 LT |
359 | p_dev = to_pcmcia_dev(dev); |
360 | p_drv = to_pcmcia_drv(dev->driver); | |
d6ff5a85 | 361 | |
d50dbec3 | 362 | dev_dbg(dev, "removing device\n"); |
d9d9ea01 | 363 | |
d6ff5a85 DB |
364 | /* If we're removing the primary module driving a |
365 | * pseudo multi-function card, we need to unbind | |
366 | * all devices | |
367 | */ | |
ce3f9d71 | 368 | if ((p_dev->socket->pcmcia_pfc) && |
e6e4f397 | 369 | (p_dev->socket->device_count > 0) && |
d6ff5a85 DB |
370 | (p_dev->device_no == 0)) |
371 | pcmcia_card_remove(p_dev->socket, p_dev); | |
372 | ||
373 | /* detach the "instance" */ | |
f3990715 DB |
374 | if (!p_drv) |
375 | return 0; | |
1da177e4 | 376 | |
f3990715 | 377 | if (p_drv->remove) |
9fea84f4 | 378 | p_drv->remove(p_dev); |
cc3b4866 | 379 | |
f3990715 | 380 | /* check for proper unloading */ |
e2d40963 | 381 | if (p_dev->_irq || p_dev->_io || p_dev->_locked) |
ac449d6e DB |
382 | dev_printk(KERN_INFO, dev, |
383 | "pcmcia: driver %s did not release config properly\n", | |
2e9b981a | 384 | p_drv->name); |
cc3b4866 | 385 | |
f3990715 | 386 | for (i = 0; i < MAX_WIN; i++) |
e2d40963 | 387 | if (p_dev->_win & CLIENT_WIN_REQ(i)) |
ac449d6e DB |
388 | dev_printk(KERN_INFO, dev, |
389 | "pcmcia: driver %s did not release window properly\n", | |
2e9b981a | 390 | p_drv->name); |
cc3b4866 | 391 | |
f3990715 DB |
392 | /* references from pcmcia_probe_device */ |
393 | pcmcia_put_dev(p_dev); | |
394 | module_put(p_drv->owner); | |
1da177e4 LT |
395 | |
396 | return 0; | |
397 | } | |
398 | ||
399 | ||
1da177e4 LT |
400 | /* |
401 | * pcmcia_device_query -- determine information about a pcmcia device | |
402 | */ | |
403 | static int pcmcia_device_query(struct pcmcia_device *p_dev) | |
404 | { | |
405 | cistpl_manfid_t manf_id; | |
406 | cistpl_funcid_t func_id; | |
76fa82fb | 407 | cistpl_vers_1_t *vers1; |
1da177e4 LT |
408 | unsigned int i; |
409 | ||
76fa82fb IM |
410 | vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL); |
411 | if (!vers1) | |
412 | return -ENOMEM; | |
413 | ||
84897fc0 | 414 | if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, |
1da177e4 | 415 | CISTPL_MANFID, &manf_id)) { |
af461fc1 | 416 | mutex_lock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
417 | p_dev->manf_id = manf_id.manf; |
418 | p_dev->card_id = manf_id.card; | |
419 | p_dev->has_manf_id = 1; | |
420 | p_dev->has_card_id = 1; | |
af461fc1 | 421 | mutex_unlock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
422 | } |
423 | ||
424 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, | |
425 | CISTPL_FUNCID, &func_id)) { | |
af461fc1 | 426 | mutex_lock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
427 | p_dev->func_id = func_id.func; |
428 | p_dev->has_func_id = 1; | |
af461fc1 | 429 | mutex_unlock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
430 | } else { |
431 | /* rule of thumb: cards with no FUNCID, but with | |
432 | * common memory device geometry information, are | |
433 | * probably memory cards (from pcmcia-cs) */ | |
76fa82fb IM |
434 | cistpl_device_geo_t *devgeo; |
435 | ||
436 | devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL); | |
437 | if (!devgeo) { | |
438 | kfree(vers1); | |
439 | return -ENOMEM; | |
440 | } | |
1da177e4 | 441 | if (!pccard_read_tuple(p_dev->socket, p_dev->func, |
76fa82fb | 442 | CISTPL_DEVICE_GEO, devgeo)) { |
d50dbec3 | 443 | dev_dbg(&p_dev->dev, |
ac449d6e DB |
444 | "mem device geometry probably means " |
445 | "FUNCID_MEMORY\n"); | |
af461fc1 | 446 | mutex_lock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
447 | p_dev->func_id = CISTPL_FUNCID_MEMORY; |
448 | p_dev->has_func_id = 1; | |
af461fc1 | 449 | mutex_unlock(&p_dev->socket->ops_mutex); |
1da177e4 | 450 | } |
76fa82fb | 451 | kfree(devgeo); |
1da177e4 LT |
452 | } |
453 | ||
84897fc0 | 454 | if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1, |
76fa82fb | 455 | vers1)) { |
af461fc1 | 456 | mutex_lock(&p_dev->socket->ops_mutex); |
c5e09528 | 457 | for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) { |
1da177e4 LT |
458 | char *tmp; |
459 | unsigned int length; | |
44961a03 | 460 | char *new; |
1da177e4 | 461 | |
76fa82fb | 462 | tmp = vers1->str + vers1->ofs[i]; |
1da177e4 LT |
463 | |
464 | length = strlen(tmp) + 1; | |
6e3d4f25 | 465 | if ((length < 2) || (length > 255)) |
1da177e4 LT |
466 | continue; |
467 | ||
44961a03 DB |
468 | new = kmalloc(sizeof(char) * length, GFP_KERNEL); |
469 | if (!new) | |
1da177e4 LT |
470 | continue; |
471 | ||
44961a03 DB |
472 | new = strncpy(new, tmp, length); |
473 | ||
474 | tmp = p_dev->prod_id[i]; | |
475 | p_dev->prod_id[i] = new; | |
476 | kfree(tmp); | |
1da177e4 | 477 | } |
af461fc1 | 478 | mutex_unlock(&p_dev->socket->ops_mutex); |
1da177e4 LT |
479 | } |
480 | ||
76fa82fb | 481 | kfree(vers1); |
1da177e4 LT |
482 | return 0; |
483 | } | |
484 | ||
485 | ||
5716d415 DB |
486 | static struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, |
487 | unsigned int function) | |
1da177e4 | 488 | { |
360b65b9 | 489 | struct pcmcia_device *p_dev, *tmp_dev; |
44961a03 | 490 | int i; |
1da177e4 | 491 | |
dc109497 | 492 | s = pcmcia_get_socket(s); |
1da177e4 LT |
493 | if (!s) |
494 | return NULL; | |
495 | ||
d50dbec3 | 496 | pr_debug("adding device to %d, function %d\n", s->sock, function); |
d9d9ea01 | 497 | |
8084b372 | 498 | p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); |
1da177e4 LT |
499 | if (!p_dev) |
500 | goto err_put; | |
1da177e4 | 501 | |
00ce99ff | 502 | mutex_lock(&s->ops_mutex); |
1da177e4 | 503 | p_dev->device_no = (s->device_count++); |
00ce99ff | 504 | mutex_unlock(&s->ops_mutex); |
e6e4f397 | 505 | |
7d7ba8d3 DB |
506 | /* max of 2 PFC devices */ |
507 | if ((p_dev->device_no >= 2) && (function == 0)) | |
508 | goto err_free; | |
509 | ||
510 | /* max of 4 devices overall */ | |
511 | if (p_dev->device_no >= 4) | |
e6e4f397 DB |
512 | goto err_free; |
513 | ||
514 | p_dev->socket = s; | |
1da177e4 LT |
515 | p_dev->func = function; |
516 | ||
517 | p_dev->dev.bus = &pcmcia_bus_type; | |
87373318 | 518 | p_dev->dev.parent = s->dev.parent; |
1da177e4 | 519 | p_dev->dev.release = pcmcia_release_dev; |
43d9f7fd JB |
520 | /* by default don't allow DMA */ |
521 | p_dev->dma_mask = DMA_MASK_NONE; | |
522 | p_dev->dev.dma_mask = &p_dev->dma_mask; | |
25096986 KS |
523 | dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no); |
524 | if (!dev_name(&p_dev->dev)) | |
525 | goto err_free; | |
526 | p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev)); | |
bd65a685 BG |
527 | if (!p_dev->devname) |
528 | goto err_free; | |
d50dbec3 | 529 | dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname); |
1da177e4 | 530 | |
00ce99ff | 531 | mutex_lock(&s->ops_mutex); |
360b65b9 DB |
532 | |
533 | /* | |
534 | * p_dev->function_config must be the same for all card functions. | |
a60f22c4 DB |
535 | * Note that this is serialized by ops_mutex, so that only one |
536 | * such struct will be created. | |
360b65b9 | 537 | */ |
9fea84f4 DB |
538 | list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list) |
539 | if (p_dev->func == tmp_dev->func) { | |
360b65b9 | 540 | p_dev->function_config = tmp_dev->function_config; |
3e879f61 | 541 | p_dev->irq = tmp_dev->irq; |
360b65b9 DB |
542 | kref_get(&p_dev->function_config->ref); |
543 | } | |
544 | ||
545 | /* Add to the list in pcmcia_bus_socket */ | |
6171b88b | 546 | list_add(&p_dev->socket_device_list, &s->devices_list); |
360b65b9 | 547 | |
6f0f38c4 DB |
548 | if (pcmcia_setup_irq(p_dev)) |
549 | dev_warn(&p_dev->dev, | |
550 | "IRQ setup failed -- device might not work\n"); | |
1da177e4 | 551 | |
360b65b9 | 552 | if (!p_dev->function_config) { |
2ce4905e | 553 | config_t *c; |
d50dbec3 | 554 | dev_dbg(&p_dev->dev, "creating config_t\n"); |
2ce4905e DB |
555 | c = kzalloc(sizeof(struct config_t), GFP_KERNEL); |
556 | if (!c) { | |
6f0f38c4 | 557 | mutex_unlock(&s->ops_mutex); |
360b65b9 | 558 | goto err_unreg; |
6f0f38c4 | 559 | } |
2ce4905e DB |
560 | p_dev->function_config = c; |
561 | kref_init(&c->ref); | |
562 | for (i = 0; i < MAX_IO_WIN; i++) { | |
ad0c7be2 | 563 | c->io[i].name = p_dev->devname; |
2ce4905e DB |
564 | c->io[i].flags = IORESOURCE_IO; |
565 | } | |
0ca724d3 | 566 | for (i = 0; i< MAX_WIN; i++) { |
ad0c7be2 | 567 | c->mem[i].name = p_dev->devname; |
0ca724d3 DB |
568 | c->mem[i].flags = IORESOURCE_MEM; |
569 | } | |
360b65b9 | 570 | } |
2ce4905e DB |
571 | for (i = 0; i < MAX_IO_WIN; i++) |
572 | p_dev->resource[i] = &p_dev->function_config->io[i]; | |
0ca724d3 DB |
573 | for (; i < (MAX_IO_WIN + MAX_WIN); i++) |
574 | p_dev->resource[i] = &p_dev->function_config->mem[i-MAX_IO_WIN]; | |
2ce4905e | 575 | |
6f0f38c4 | 576 | mutex_unlock(&s->ops_mutex); |
360b65b9 | 577 | |
ac449d6e | 578 | dev_printk(KERN_NOTICE, &p_dev->dev, |
6f0f38c4 | 579 | "pcmcia: registering new device %s (IRQ: %d)\n", |
eb14120f | 580 | p_dev->devname, p_dev->irq); |
807277cb | 581 | |
1ad275e3 DB |
582 | pcmcia_device_query(p_dev); |
583 | ||
360b65b9 DB |
584 | if (device_register(&p_dev->dev)) |
585 | goto err_unreg; | |
1da177e4 | 586 | |
1da177e4 LT |
587 | return p_dev; |
588 | ||
360b65b9 | 589 | err_unreg: |
00ce99ff | 590 | mutex_lock(&s->ops_mutex); |
360b65b9 | 591 | list_del(&p_dev->socket_device_list); |
00ce99ff | 592 | mutex_unlock(&s->ops_mutex); |
360b65b9 | 593 | |
1da177e4 | 594 | err_free: |
00ce99ff | 595 | mutex_lock(&s->ops_mutex); |
e6e4f397 | 596 | s->device_count--; |
00ce99ff | 597 | mutex_unlock(&s->ops_mutex); |
e6e4f397 | 598 | |
44961a03 DB |
599 | for (i = 0; i < 4; i++) |
600 | kfree(p_dev->prod_id[i]); | |
bd65a685 | 601 | kfree(p_dev->devname); |
1da177e4 | 602 | kfree(p_dev); |
1da177e4 | 603 | err_put: |
dc109497 | 604 | pcmcia_put_socket(s); |
1da177e4 LT |
605 | |
606 | return NULL; | |
607 | } | |
608 | ||
609 | ||
610 | static int pcmcia_card_add(struct pcmcia_socket *s) | |
611 | { | |
1da177e4 | 612 | cistpl_longlink_mfc_t mfc; |
c5081d5f | 613 | unsigned int no_funcs, i, no_chains; |
cfe5d809 | 614 | int ret = -EAGAIN; |
1da177e4 | 615 | |
cfe5d809 | 616 | mutex_lock(&s->ops_mutex); |
d9d9ea01 | 617 | if (!(s->resource_setup_done)) { |
d50dbec3 | 618 | dev_dbg(&s->dev, |
ac449d6e | 619 | "no resources available, delaying card_add\n"); |
cfe5d809 | 620 | mutex_unlock(&s->ops_mutex); |
1da177e4 | 621 | return -EAGAIN; /* try again, but later... */ |
d9d9ea01 | 622 | } |
1da177e4 | 623 | |
d9d9ea01 | 624 | if (pcmcia_validate_mem(s)) { |
d50dbec3 | 625 | dev_dbg(&s->dev, "validating mem resources failed, " |
d9d9ea01 | 626 | "delaying card_add\n"); |
cfe5d809 | 627 | mutex_unlock(&s->ops_mutex); |
de75914e | 628 | return -EAGAIN; /* try again, but later... */ |
d9d9ea01 | 629 | } |
cfe5d809 | 630 | mutex_unlock(&s->ops_mutex); |
de75914e | 631 | |
84897fc0 | 632 | ret = pccard_validate_cis(s, &no_chains); |
c5081d5f | 633 | if (ret || !no_chains) { |
d50dbec3 | 634 | dev_dbg(&s->dev, "invalid CIS or invalid resources\n"); |
1da177e4 LT |
635 | return -ENODEV; |
636 | } | |
637 | ||
638 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) | |
639 | no_funcs = mfc.nfn; | |
640 | else | |
641 | no_funcs = 1; | |
1d2c9042 | 642 | s->functions = no_funcs; |
1da177e4 | 643 | |
9fea84f4 | 644 | for (i = 0; i < no_funcs; i++) |
dc109497 | 645 | pcmcia_device_add(s, i); |
1da177e4 | 646 | |
9fea84f4 | 647 | return ret; |
1da177e4 LT |
648 | } |
649 | ||
650 | ||
af461fc1 | 651 | static int pcmcia_requery_callback(struct device *dev, void * _data) |
ff1fa9ef | 652 | { |
e2f0b534 | 653 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
d9d9ea01 | 654 | if (!p_dev->dev.driver) { |
d50dbec3 | 655 | dev_dbg(dev, "update device information\n"); |
e2f0b534 | 656 | pcmcia_device_query(p_dev); |
d9d9ea01 | 657 | } |
e2f0b534 DB |
658 | |
659 | return 0; | |
660 | } | |
661 | ||
aa584ca4 | 662 | |
af461fc1 | 663 | static void pcmcia_requery(struct pcmcia_socket *s) |
e2f0b534 | 664 | { |
04de0816 | 665 | int has_pfc; |
4ae1cbf1 | 666 | |
af461fc1 DB |
667 | if (s->functions == 0) { |
668 | pcmcia_card_add(s); | |
669 | return; | |
e2f0b534 DB |
670 | } |
671 | ||
672 | /* some device information might have changed because of a CIS | |
673 | * update or because we can finally read it correctly... so | |
674 | * determine it again, overwriting old values if necessary. */ | |
af461fc1 DB |
675 | bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery_callback); |
676 | ||
677 | /* if the CIS changed, we need to check whether the number of | |
678 | * functions changed. */ | |
679 | if (s->fake_cis) { | |
680 | int old_funcs, new_funcs; | |
681 | cistpl_longlink_mfc_t mfc; | |
682 | ||
683 | /* does this cis override add or remove functions? */ | |
684 | old_funcs = s->functions; | |
685 | ||
686 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, | |
687 | &mfc)) | |
688 | new_funcs = mfc.nfn; | |
689 | else | |
690 | new_funcs = 1; | |
b1095afe DB |
691 | if (old_funcs != new_funcs) { |
692 | /* we need to re-start */ | |
af461fc1 | 693 | pcmcia_card_remove(s, NULL); |
b83156b5 | 694 | s->functions = 0; |
af461fc1 | 695 | pcmcia_card_add(s); |
af461fc1 DB |
696 | } |
697 | } | |
e2f0b534 | 698 | |
aa584ca4 DB |
699 | /* If the PCMCIA device consists of two pseudo devices, |
700 | * call pcmcia_device_add() -- which will fail if both | |
701 | * devices are already registered. */ | |
702 | mutex_lock(&s->ops_mutex); | |
ce3f9d71 | 703 | has_pfc = s->pcmcia_pfc; |
aa584ca4 DB |
704 | mutex_unlock(&s->ops_mutex); |
705 | if (has_pfc) | |
706 | pcmcia_device_add(s, 0); | |
707 | ||
e2f0b534 DB |
708 | /* we re-scan all devices, not just the ones connected to this |
709 | * socket. This does not matter, though. */ | |
af461fc1 DB |
710 | if (bus_rescan_devices(&pcmcia_bus_type)) |
711 | dev_warn(&s->dev, "rescanning the bus failed\n"); | |
ff1fa9ef | 712 | } |
1ad275e3 | 713 | |
af461fc1 | 714 | |
1d2c9042 DB |
715 | #ifdef CONFIG_PCMCIA_LOAD_CIS |
716 | ||
717 | /** | |
718 | * pcmcia_load_firmware - load CIS from userspace if device-provided is broken | |
78187865 RD |
719 | * @dev: the pcmcia device which needs a CIS override |
720 | * @filename: requested filename in /lib/firmware/ | |
1d2c9042 DB |
721 | * |
722 | * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if | |
723 | * the one provided by the card is broken. The firmware files reside in | |
724 | * /lib/firmware/ in userspace. | |
725 | */ | |
726 | static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) | |
727 | { | |
728 | struct pcmcia_socket *s = dev->socket; | |
729 | const struct firmware *fw; | |
1d2c9042 | 730 | int ret = -ENOMEM; |
b1095afe DB |
731 | cistpl_longlink_mfc_t mfc; |
732 | int old_funcs, new_funcs = 1; | |
1d2c9042 DB |
733 | |
734 | if (!filename) | |
735 | return -EINVAL; | |
736 | ||
d50dbec3 | 737 | dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename); |
1d2c9042 | 738 | |
ed62acec | 739 | if (request_firmware(&fw, filename, &dev->dev) == 0) { |
d9d9ea01 DB |
740 | if (fw->size >= CISTPL_MAX_CIS_SIZE) { |
741 | ret = -EINVAL; | |
ac449d6e DB |
742 | dev_printk(KERN_ERR, &dev->dev, |
743 | "pcmcia: CIS override is too big\n"); | |
1d2c9042 | 744 | goto release; |
d9d9ea01 | 745 | } |
1d2c9042 | 746 | |
53efec95 | 747 | if (!pcmcia_replace_cis(s, fw->data, fw->size)) |
1d2c9042 | 748 | ret = 0; |
d9d9ea01 | 749 | else { |
ac449d6e DB |
750 | dev_printk(KERN_ERR, &dev->dev, |
751 | "pcmcia: CIS override failed\n"); | |
d9d9ea01 DB |
752 | goto release; |
753 | } | |
754 | ||
b1095afe DB |
755 | /* we need to re-start if the number of functions changed */ |
756 | old_funcs = s->functions; | |
757 | if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, | |
758 | &mfc)) | |
759 | new_funcs = mfc.nfn; | |
760 | ||
761 | if (old_funcs != new_funcs) | |
762 | ret = -EBUSY; | |
1d2c9042 DB |
763 | |
764 | /* update information */ | |
765 | pcmcia_device_query(dev); | |
766 | ||
aa584ca4 DB |
767 | /* requery (as number of functions might have changed) */ |
768 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); | |
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) { | |
83bf6f11 | 833 | dev_dbg(&dev->dev, "this is a pseudo-multi-function device\n"); |
aa584ca4 | 834 | mutex_lock(&dev->socket->ops_mutex); |
ce3f9d71 | 835 | dev->socket->pcmcia_pfc = 1; |
aa584ca4 | 836 | mutex_unlock(&dev->socket->ops_mutex); |
83bf6f11 AK |
837 | if (dev->device_no != did->device_no) |
838 | return 0; | |
1ad275e3 DB |
839 | } |
840 | ||
841 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { | |
94a819f8 DB |
842 | int ret; |
843 | ||
1ad275e3 DB |
844 | if ((!dev->has_func_id) || (dev->func_id != did->func_id)) |
845 | return 0; | |
846 | ||
847 | /* if this is a pseudo-multi-function device, | |
848 | * we need explicit matches */ | |
ce3f9d71 | 849 | if (dev->socket->pcmcia_pfc) |
1ad275e3 DB |
850 | return 0; |
851 | if (dev->device_no) | |
852 | return 0; | |
853 | ||
854 | /* also, FUNC_ID matching needs to be activated by userspace | |
855 | * after it has re-checked that there is no possible module | |
856 | * with a prod_id/manf_id/card_id match. | |
857 | */ | |
94a819f8 DB |
858 | mutex_lock(&dev->socket->ops_mutex); |
859 | ret = dev->allow_func_id_match; | |
860 | mutex_unlock(&dev->socket->ops_mutex); | |
861 | ||
862 | if (!ret) { | |
863 | dev_dbg(&dev->dev, | |
864 | "skipping FUNC_ID match until userspace ACK\n"); | |
1ad275e3 | 865 | return 0; |
94a819f8 | 866 | } |
1ad275e3 DB |
867 | } |
868 | ||
ea7b3882 | 869 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { |
d50dbec3 | 870 | dev_dbg(&dev->dev, "device needs a fake CIS\n"); |
daa9517d | 871 | if (!dev->socket->fake_cis) |
b1095afe DB |
872 | if (pcmcia_load_firmware(dev, did->cisfile)) |
873 | return 0; | |
ea7b3882 DB |
874 | } |
875 | ||
f602ff7e DB |
876 | if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { |
877 | int i; | |
9fea84f4 | 878 | for (i = 0; i < 4; i++) |
f602ff7e DB |
879 | if (dev->prod_id[i]) |
880 | return 0; | |
881 | if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) | |
882 | return 0; | |
883 | } | |
884 | ||
1ad275e3 DB |
885 | return 1; |
886 | } | |
887 | ||
888 | ||
9fea84f4 DB |
889 | static int pcmcia_bus_match(struct device *dev, struct device_driver *drv) |
890 | { | |
891 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
892 | struct pcmcia_driver *p_drv = to_pcmcia_drv(drv); | |
1ad275e3 | 893 | struct pcmcia_device_id *did = p_drv->id_table; |
6179b556 BW |
894 | struct pcmcia_dynid *dynid; |
895 | ||
896 | /* match dynamic devices first */ | |
3f565232 | 897 | mutex_lock(&p_drv->dynids.lock); |
6179b556 | 898 | list_for_each_entry(dynid, &p_drv->dynids.list, node) { |
d50dbec3 | 899 | dev_dbg(dev, "trying to match to %s\n", drv->name); |
6179b556 | 900 | if (pcmcia_devmatch(p_dev, &dynid->id)) { |
d50dbec3 | 901 | dev_dbg(dev, "matched to %s\n", drv->name); |
3f565232 | 902 | mutex_unlock(&p_drv->dynids.lock); |
6179b556 BW |
903 | return 1; |
904 | } | |
905 | } | |
3f565232 | 906 | mutex_unlock(&p_drv->dynids.lock); |
1da177e4 | 907 | |
1ad275e3 | 908 | while (did && did->match_flags) { |
d50dbec3 | 909 | dev_dbg(dev, "trying to match to %s\n", drv->name); |
d9d9ea01 | 910 | if (pcmcia_devmatch(p_dev, did)) { |
d50dbec3 | 911 | dev_dbg(dev, "matched to %s\n", drv->name); |
1ad275e3 | 912 | return 1; |
d9d9ea01 | 913 | } |
1ad275e3 DB |
914 | did++; |
915 | } | |
916 | ||
1da177e4 LT |
917 | return 0; |
918 | } | |
919 | ||
840c2ac5 DB |
920 | #ifdef CONFIG_HOTPLUG |
921 | ||
7eff2e7a | 922 | static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
840c2ac5 DB |
923 | { |
924 | struct pcmcia_device *p_dev; | |
7eff2e7a | 925 | int i; |
840c2ac5 DB |
926 | u32 hash[4] = { 0, 0, 0, 0}; |
927 | ||
928 | if (!dev) | |
929 | return -ENODEV; | |
930 | ||
931 | p_dev = to_pcmcia_dev(dev); | |
932 | ||
933 | /* calculate hashes */ | |
9fea84f4 | 934 | for (i = 0; i < 4; i++) { |
840c2ac5 DB |
935 | if (!p_dev->prod_id[i]) |
936 | continue; | |
937 | hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); | |
938 | } | |
939 | ||
7eff2e7a | 940 | if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) |
840c2ac5 DB |
941 | return -ENOMEM; |
942 | ||
7eff2e7a | 943 | if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) |
840c2ac5 DB |
944 | return -ENOMEM; |
945 | ||
7eff2e7a | 946 | if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" |
312c004d KS |
947 | "pa%08Xpb%08Xpc%08Xpd%08X", |
948 | p_dev->has_manf_id ? p_dev->manf_id : 0, | |
949 | p_dev->has_card_id ? p_dev->card_id : 0, | |
950 | p_dev->has_func_id ? p_dev->func_id : 0, | |
951 | p_dev->func, | |
952 | p_dev->device_no, | |
953 | hash[0], | |
954 | hash[1], | |
955 | hash[2], | |
956 | hash[3])) | |
840c2ac5 DB |
957 | return -ENOMEM; |
958 | ||
840c2ac5 DB |
959 | return 0; |
960 | } | |
961 | ||
962 | #else | |
963 | ||
7eff2e7a | 964 | static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
840c2ac5 DB |
965 | { |
966 | return -ENODEV; | |
967 | } | |
968 | ||
969 | #endif | |
970 | ||
3f8df781 AS |
971 | /************************ runtime PM support ***************************/ |
972 | ||
973 | static int pcmcia_dev_suspend(struct device *dev, pm_message_t state); | |
974 | static int pcmcia_dev_resume(struct device *dev); | |
975 | ||
976 | static int runtime_suspend(struct device *dev) | |
977 | { | |
978 | int rc; | |
979 | ||
8e9394ce | 980 | device_lock(dev); |
3f8df781 | 981 | rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND); |
8e9394ce | 982 | device_unlock(dev); |
3f8df781 AS |
983 | return rc; |
984 | } | |
985 | ||
933a838a | 986 | static int runtime_resume(struct device *dev) |
3f8df781 AS |
987 | { |
988 | int rc; | |
989 | ||
8e9394ce | 990 | device_lock(dev); |
3f8df781 | 991 | rc = pcmcia_dev_resume(dev); |
8e9394ce | 992 | device_unlock(dev); |
933a838a | 993 | return rc; |
3f8df781 AS |
994 | } |
995 | ||
1da177e4 LT |
996 | /************************ per-device sysfs output ***************************/ |
997 | ||
998 | #define pcmcia_device_attr(field, test, format) \ | |
e404e274 | 999 | static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
1000 | { \ |
1001 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
9fea84f4 | 1002 | return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \ |
1da177e4 LT |
1003 | } |
1004 | ||
1005 | #define pcmcia_device_stringattr(name, field) \ | |
e404e274 | 1006 | static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
1007 | { \ |
1008 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ | |
9fea84f4 | 1009 | return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \ |
1da177e4 LT |
1010 | } |
1011 | ||
1012 | pcmcia_device_attr(func, socket, "0x%02x\n"); | |
1013 | pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); | |
1014 | pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); | |
1015 | pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); | |
1016 | pcmcia_device_stringattr(prod_id1, prod_id[0]); | |
1017 | pcmcia_device_stringattr(prod_id2, prod_id[1]); | |
1018 | pcmcia_device_stringattr(prod_id3, prod_id[2]); | |
1019 | pcmcia_device_stringattr(prod_id4, prod_id[3]); | |
1020 | ||
8f677ea0 DB |
1021 | static ssize_t pcmcia_show_resources(struct device *dev, |
1022 | struct device_attribute *attr, char *buf) | |
1023 | { | |
1024 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1025 | char *str = buf; | |
1026 | int i; | |
1027 | ||
1028 | for (i = 0; i < PCMCIA_NUM_RESOURCES; i++) | |
1029 | str += sprintf(str, "%pr\n", p_dev->resource[i]); | |
1030 | ||
1031 | return str - buf; | |
1032 | } | |
db1019ca DB |
1033 | |
1034 | static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf) | |
1035 | { | |
1036 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1037 | ||
f6fbe01a | 1038 | if (p_dev->suspended) |
db1019ca DB |
1039 | return sprintf(buf, "off\n"); |
1040 | else | |
1041 | return sprintf(buf, "on\n"); | |
1042 | } | |
1043 | ||
1044 | static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr, | |
1045 | const char *buf, size_t count) | |
1046 | { | |
1047 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1048 | int ret = 0; | |
1049 | ||
9fea84f4 DB |
1050 | if (!count) |
1051 | return -EINVAL; | |
db1019ca | 1052 | |
f6fbe01a | 1053 | if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) |
3f8df781 | 1054 | ret = runtime_suspend(dev); |
f6fbe01a | 1055 | else if (p_dev->suspended && !strncmp(buf, "on", 2)) |
933a838a | 1056 | ret = runtime_resume(dev); |
db1019ca DB |
1057 | |
1058 | return ret ? ret : count; | |
1059 | } | |
1060 | ||
1061 | ||
3704511b | 1062 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
3248ff43 DB |
1063 | { |
1064 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1065 | int i; | |
1066 | u32 hash[4] = { 0, 0, 0, 0}; | |
1067 | ||
1068 | /* calculate hashes */ | |
9fea84f4 | 1069 | for (i = 0; i < 4; i++) { |
3248ff43 DB |
1070 | if (!p_dev->prod_id[i]) |
1071 | continue; | |
9fea84f4 DB |
1072 | hash[i] = crc32(0, p_dev->prod_id[i], |
1073 | strlen(p_dev->prod_id[i])); | |
3248ff43 DB |
1074 | } |
1075 | return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" | |
1076 | "pa%08Xpb%08Xpc%08Xpd%08X\n", | |
1077 | p_dev->has_manf_id ? p_dev->manf_id : 0, | |
1078 | p_dev->has_card_id ? p_dev->card_id : 0, | |
1079 | p_dev->has_func_id ? p_dev->func_id : 0, | |
1080 | p_dev->func, p_dev->device_no, | |
1081 | hash[0], hash[1], hash[2], hash[3]); | |
1082 | } | |
a5b55778 | 1083 | |
3248ff43 DB |
1084 | static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, |
1085 | struct device_attribute *attr, const char *buf, size_t count) | |
a5b55778 DB |
1086 | { |
1087 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
db1019ca DB |
1088 | |
1089 | if (!count) | |
1090 | return -EINVAL; | |
a5b55778 | 1091 | |
94a819f8 | 1092 | mutex_lock(&p_dev->socket->ops_mutex); |
a5b55778 | 1093 | p_dev->allow_func_id_match = 1; |
94a819f8 | 1094 | mutex_unlock(&p_dev->socket->ops_mutex); |
af461fc1 | 1095 | pcmcia_parse_uevents(p_dev->socket, PCMCIA_UEVENT_REQUERY); |
a5b55778 DB |
1096 | |
1097 | return count; | |
1098 | } | |
1099 | ||
1da177e4 LT |
1100 | static struct device_attribute pcmcia_dev_attrs[] = { |
1101 | __ATTR(function, 0444, func_show, NULL), | |
db1019ca | 1102 | __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state), |
8f677ea0 | 1103 | __ATTR(resources, 0444, pcmcia_show_resources, NULL), |
1da177e4 LT |
1104 | __ATTR_RO(func_id), |
1105 | __ATTR_RO(manf_id), | |
1106 | __ATTR_RO(card_id), | |
1107 | __ATTR_RO(prod_id1), | |
1108 | __ATTR_RO(prod_id2), | |
1109 | __ATTR_RO(prod_id3), | |
1110 | __ATTR_RO(prod_id4), | |
3248ff43 | 1111 | __ATTR_RO(modalias), |
a5b55778 | 1112 | __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), |
1da177e4 LT |
1113 | __ATTR_NULL, |
1114 | }; | |
1115 | ||
8e9e793d DB |
1116 | /* PM support, also needed for reset */ |
1117 | ||
9fea84f4 | 1118 | static int pcmcia_dev_suspend(struct device *dev, pm_message_t state) |
8e9e793d DB |
1119 | { |
1120 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1121 | struct pcmcia_driver *p_drv = NULL; | |
f6fbe01a | 1122 | int ret = 0; |
8e9e793d | 1123 | |
94a819f8 DB |
1124 | mutex_lock(&p_dev->socket->ops_mutex); |
1125 | if (p_dev->suspended) { | |
1126 | mutex_unlock(&p_dev->socket->ops_mutex); | |
d6b4fa6d | 1127 | return 0; |
94a819f8 DB |
1128 | } |
1129 | p_dev->suspended = 1; | |
1130 | mutex_unlock(&p_dev->socket->ops_mutex); | |
d6b4fa6d | 1131 | |
d50dbec3 | 1132 | dev_dbg(dev, "suspending\n"); |
d9d9ea01 | 1133 | |
8e9e793d DB |
1134 | if (dev->driver) |
1135 | p_drv = to_pcmcia_drv(dev->driver); | |
1136 | ||
e2d40963 DB |
1137 | if (!p_drv) |
1138 | goto out; | |
1139 | ||
1140 | if (p_drv->suspend) { | |
8661bb5b | 1141 | ret = p_drv->suspend(p_dev); |
d9d9ea01 | 1142 | if (ret) { |
ac449d6e DB |
1143 | dev_printk(KERN_ERR, dev, |
1144 | "pcmcia: device %s (driver %s) did " | |
1145 | "not want to go to sleep (%d)\n", | |
2e9b981a | 1146 | p_dev->devname, p_drv->name, ret); |
94a819f8 DB |
1147 | mutex_lock(&p_dev->socket->ops_mutex); |
1148 | p_dev->suspended = 0; | |
1149 | mutex_unlock(&p_dev->socket->ops_mutex); | |
f6fbe01a | 1150 | goto out; |
d9d9ea01 | 1151 | } |
8661bb5b | 1152 | } |
8e9e793d | 1153 | |
d9d9ea01 | 1154 | if (p_dev->device_no == p_dev->func) { |
d50dbec3 | 1155 | dev_dbg(dev, "releasing configuration\n"); |
e2d40963 | 1156 | pcmcia_release_configuration(p_dev); |
d9d9ea01 | 1157 | } |
e2d40963 | 1158 | |
f6fbe01a | 1159 | out: |
f6fbe01a | 1160 | return ret; |
8e9e793d DB |
1161 | } |
1162 | ||
1163 | ||
9fea84f4 | 1164 | static int pcmcia_dev_resume(struct device *dev) |
8e9e793d DB |
1165 | { |
1166 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
9fea84f4 | 1167 | struct pcmcia_driver *p_drv = NULL; |
f6fbe01a | 1168 | int ret = 0; |
8e9e793d | 1169 | |
94a819f8 DB |
1170 | mutex_lock(&p_dev->socket->ops_mutex); |
1171 | if (!p_dev->suspended) { | |
1172 | mutex_unlock(&p_dev->socket->ops_mutex); | |
d6b4fa6d | 1173 | return 0; |
94a819f8 DB |
1174 | } |
1175 | p_dev->suspended = 0; | |
1176 | mutex_unlock(&p_dev->socket->ops_mutex); | |
d6b4fa6d | 1177 | |
d50dbec3 | 1178 | dev_dbg(dev, "resuming\n"); |
d9d9ea01 | 1179 | |
8e9e793d DB |
1180 | if (dev->driver) |
1181 | p_drv = to_pcmcia_drv(dev->driver); | |
1182 | ||
e2d40963 DB |
1183 | if (!p_drv) |
1184 | goto out; | |
1185 | ||
1186 | if (p_dev->device_no == p_dev->func) { | |
d50dbec3 | 1187 | dev_dbg(dev, "requesting configuration\n"); |
1ac71e5a | 1188 | ret = pcmcia_enable_device(p_dev); |
e2d40963 DB |
1189 | if (ret) |
1190 | goto out; | |
8661bb5b | 1191 | } |
8e9e793d | 1192 | |
e2d40963 DB |
1193 | if (p_drv->resume) |
1194 | ret = p_drv->resume(p_dev); | |
1195 | ||
f6fbe01a | 1196 | out: |
f6fbe01a | 1197 | return ret; |
8e9e793d DB |
1198 | } |
1199 | ||
1200 | ||
1201 | static int pcmcia_bus_suspend_callback(struct device *dev, void * _data) | |
1202 | { | |
1203 | struct pcmcia_socket *skt = _data; | |
1204 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1205 | ||
3f8df781 | 1206 | if (p_dev->socket != skt || p_dev->suspended) |
8e9e793d DB |
1207 | return 0; |
1208 | ||
3f8df781 | 1209 | return runtime_suspend(dev); |
8e9e793d DB |
1210 | } |
1211 | ||
1212 | static int pcmcia_bus_resume_callback(struct device *dev, void * _data) | |
1213 | { | |
1214 | struct pcmcia_socket *skt = _data; | |
1215 | struct pcmcia_device *p_dev = to_pcmcia_dev(dev); | |
1216 | ||
3f8df781 | 1217 | if (p_dev->socket != skt || !p_dev->suspended) |
8e9e793d DB |
1218 | return 0; |
1219 | ||
3f8df781 | 1220 | runtime_resume(dev); |
8e9e793d DB |
1221 | |
1222 | return 0; | |
1223 | } | |
1224 | ||
1225 | static int pcmcia_bus_resume(struct pcmcia_socket *skt) | |
1226 | { | |
d50dbec3 | 1227 | dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock); |
8e9e793d DB |
1228 | bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); |
1229 | return 0; | |
1230 | } | |
1231 | ||
1232 | static int pcmcia_bus_suspend(struct pcmcia_socket *skt) | |
1233 | { | |
d50dbec3 | 1234 | dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock); |
8e9e793d DB |
1235 | if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, |
1236 | pcmcia_bus_suspend_callback)) { | |
1237 | pcmcia_bus_resume(skt); | |
1238 | return -EIO; | |
1239 | } | |
1240 | return 0; | |
1241 | } | |
1242 | ||
7b24e798 DB |
1243 | static int pcmcia_bus_remove(struct pcmcia_socket *skt) |
1244 | { | |
1245 | atomic_set(&skt->present, 0); | |
1246 | pcmcia_card_remove(skt, NULL); | |
1da177e4 | 1247 | |
7b24e798 DB |
1248 | mutex_lock(&skt->ops_mutex); |
1249 | destroy_cis_cache(skt); | |
1250 | pcmcia_cleanup_irq(skt); | |
1251 | mutex_unlock(&skt->ops_mutex); | |
1da177e4 | 1252 | |
7b24e798 DB |
1253 | return 0; |
1254 | } | |
9fea84f4 | 1255 | |
7b24e798 DB |
1256 | static int pcmcia_bus_add(struct pcmcia_socket *skt) |
1257 | { | |
1258 | atomic_set(&skt->present, 1); | |
1da177e4 | 1259 | |
7b24e798 | 1260 | mutex_lock(&skt->ops_mutex); |
ce3f9d71 | 1261 | skt->pcmcia_pfc = 0; |
7b24e798 DB |
1262 | destroy_cis_cache(skt); /* to be on the safe side... */ |
1263 | mutex_unlock(&skt->ops_mutex); | |
1da177e4 | 1264 | |
7b24e798 | 1265 | pcmcia_card_add(skt); |
1da177e4 | 1266 | |
7b24e798 DB |
1267 | return 0; |
1268 | } | |
1617406a | 1269 | |
7b24e798 DB |
1270 | static int pcmcia_bus_early_resume(struct pcmcia_socket *skt) |
1271 | { | |
1272 | if (!verify_cis_cache(skt)) { | |
1273 | pcmcia_put_socket(skt); | |
1274 | return 0; | |
1275 | } | |
1da177e4 | 1276 | |
7b24e798 | 1277 | dev_dbg(&skt->dev, "cis mismatch - different card\n"); |
f8cfa618 | 1278 | |
7b24e798 DB |
1279 | /* first, remove the card */ |
1280 | pcmcia_bus_remove(skt); | |
88b060d6 | 1281 | |
7b24e798 DB |
1282 | mutex_lock(&skt->ops_mutex); |
1283 | destroy_cis_cache(skt); | |
1284 | kfree(skt->fake_cis); | |
1285 | skt->fake_cis = NULL; | |
1286 | skt->functions = 0; | |
1287 | mutex_unlock(&skt->ops_mutex); | |
1da177e4 | 1288 | |
7b24e798 DB |
1289 | /* now, add the new card */ |
1290 | pcmcia_bus_add(skt); | |
1291 | return 0; | |
1292 | } | |
dc109497 | 1293 | |
1da177e4 | 1294 | |
04de0816 DB |
1295 | /* |
1296 | * NOTE: This is racy. There's no guarantee the card will still be | |
1297 | * physically present, even if the call to this function returns | |
1298 | * non-NULL. Furthermore, the device driver most likely is unbound | |
1299 | * almost immediately, so the timeframe where pcmcia_dev_present | |
1300 | * returns NULL is probably really really small. | |
1301 | */ | |
9fea84f4 | 1302 | struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev) |
9940ec36 DB |
1303 | { |
1304 | struct pcmcia_device *p_dev; | |
1305 | struct pcmcia_device *ret = NULL; | |
1306 | ||
1307 | p_dev = pcmcia_get_dev(_p_dev); | |
1308 | if (!p_dev) | |
1309 | return NULL; | |
1310 | ||
04de0816 DB |
1311 | if (atomic_read(&p_dev->socket->present) != 0) |
1312 | ret = p_dev; | |
9940ec36 | 1313 | |
9940ec36 DB |
1314 | pcmcia_put_dev(p_dev); |
1315 | return ret; | |
1316 | } | |
1317 | EXPORT_SYMBOL(pcmcia_dev_present); | |
1318 | ||
1319 | ||
90c6cdd1 DB |
1320 | static struct pcmcia_callback pcmcia_bus_callback = { |
1321 | .owner = THIS_MODULE, | |
7b24e798 DB |
1322 | .add = pcmcia_bus_add, |
1323 | .remove = pcmcia_bus_remove, | |
af461fc1 | 1324 | .requery = pcmcia_requery, |
6e7b51a7 | 1325 | .validate = pccard_validate_cis, |
8e9e793d | 1326 | .suspend = pcmcia_bus_suspend, |
7b24e798 | 1327 | .early_resume = pcmcia_bus_early_resume, |
8e9e793d | 1328 | .resume = pcmcia_bus_resume, |
90c6cdd1 DB |
1329 | }; |
1330 | ||
87373318 | 1331 | static int __devinit pcmcia_bus_add_socket(struct device *dev, |
d8539d81 | 1332 | struct class_interface *class_intf) |
1da177e4 | 1333 | { |
87373318 | 1334 | struct pcmcia_socket *socket = dev_get_drvdata(dev); |
1da177e4 LT |
1335 | int ret; |
1336 | ||
dc109497 DB |
1337 | socket = pcmcia_get_socket(socket); |
1338 | if (!socket) { | |
ac449d6e DB |
1339 | dev_printk(KERN_ERR, dev, |
1340 | "PCMCIA obtaining reference to socket failed\n"); | |
1da177e4 LT |
1341 | return -ENODEV; |
1342 | } | |
1343 | ||
6e7b51a7 DB |
1344 | ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr); |
1345 | if (ret) { | |
1346 | dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); | |
1347 | pcmcia_put_socket(socket); | |
1348 | return ret; | |
1349 | } | |
1350 | ||
dc109497 | 1351 | INIT_LIST_HEAD(&socket->devices_list); |
ce3f9d71 | 1352 | socket->pcmcia_pfc = 0; |
dc109497 | 1353 | socket->device_count = 0; |
e4f1ac21 | 1354 | atomic_set(&socket->present, 0); |
1da177e4 | 1355 | |
90c6cdd1 | 1356 | ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); |
1da177e4 | 1357 | if (ret) { |
ac449d6e | 1358 | dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); |
dc109497 | 1359 | pcmcia_put_socket(socket); |
9fea84f4 | 1360 | return ret; |
1da177e4 LT |
1361 | } |
1362 | ||
1363 | return 0; | |
1364 | } | |
1365 | ||
87373318 | 1366 | static void pcmcia_bus_remove_socket(struct device *dev, |
d8539d81 | 1367 | struct class_interface *class_intf) |
1da177e4 | 1368 | { |
87373318 | 1369 | struct pcmcia_socket *socket = dev_get_drvdata(dev); |
1da177e4 | 1370 | |
dc109497 | 1371 | if (!socket) |
1da177e4 LT |
1372 | return; |
1373 | ||
1374 | pccard_register_pcmcia(socket, NULL); | |
1375 | ||
dfbc9e9d | 1376 | /* unregister any unbound devices */ |
8e4d9dcb | 1377 | mutex_lock(&socket->skt_mutex); |
dfbc9e9d | 1378 | pcmcia_card_remove(socket, NULL); |
180c33ee | 1379 | release_cis_mem(socket); |
8e4d9dcb | 1380 | mutex_unlock(&socket->skt_mutex); |
dfbc9e9d | 1381 | |
6e7b51a7 DB |
1382 | sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr); |
1383 | ||
dc109497 | 1384 | pcmcia_put_socket(socket); |
1da177e4 LT |
1385 | |
1386 | return; | |
1387 | } | |
1388 | ||
1389 | ||
1390 | /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ | |
ed49f5d0 | 1391 | static struct class_interface pcmcia_bus_interface __refdata = { |
1da177e4 | 1392 | .class = &pcmcia_socket_class, |
87373318 GKH |
1393 | .add_dev = &pcmcia_bus_add_socket, |
1394 | .remove_dev = &pcmcia_bus_remove_socket, | |
1da177e4 LT |
1395 | }; |
1396 | ||
1397 | ||
e7a480d2 | 1398 | struct bus_type pcmcia_bus_type = { |
1da177e4 | 1399 | .name = "pcmcia", |
312c004d | 1400 | .uevent = pcmcia_bus_uevent, |
1da177e4 LT |
1401 | .match = pcmcia_bus_match, |
1402 | .dev_attrs = pcmcia_dev_attrs, | |
1d0baa3a RK |
1403 | .probe = pcmcia_device_probe, |
1404 | .remove = pcmcia_device_remove, | |
8e9e793d DB |
1405 | .suspend = pcmcia_dev_suspend, |
1406 | .resume = pcmcia_dev_resume, | |
1da177e4 | 1407 | }; |
1da177e4 LT |
1408 | |
1409 | ||
1410 | static int __init init_pcmcia_bus(void) | |
1411 | { | |
ace7d477 RD |
1412 | int ret; |
1413 | ||
ace7d477 RD |
1414 | ret = bus_register(&pcmcia_bus_type); |
1415 | if (ret < 0) { | |
1416 | printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret); | |
1417 | return ret; | |
1418 | } | |
1419 | ret = class_interface_register(&pcmcia_bus_interface); | |
1420 | if (ret < 0) { | |
1421 | printk(KERN_WARNING | |
1422 | "pcmcia: class_interface_register error: %d\n", ret); | |
1423 | bus_unregister(&pcmcia_bus_type); | |
1424 | return ret; | |
1425 | } | |
1da177e4 | 1426 | |
1da177e4 LT |
1427 | return 0; |
1428 | } | |
9fea84f4 | 1429 | fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that |
1da177e4 LT |
1430 | * pcmcia_socket_class is already registered */ |
1431 | ||
1432 | ||
1433 | static void __exit exit_pcmcia_bus(void) | |
1434 | { | |
e7a480d2 | 1435 | class_interface_unregister(&pcmcia_bus_interface); |
1da177e4 LT |
1436 | |
1437 | bus_unregister(&pcmcia_bus_type); | |
1438 | } | |
1439 | module_exit(exit_pcmcia_bus); | |
1440 | ||
1441 | ||
1da177e4 | 1442 | MODULE_ALIAS("ds"); |