Commit | Line | Data |
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e7a480d2 DB |
1 | /* |
2 | * pcmcia_ioctl.c -- ioctl interface for cardmgr and cardctl | |
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 | |
13 | * (C) 2003 - 2004 Dominik Brodowski | |
14 | */ | |
15 | ||
16 | /* | |
17 | * This file will go away soon. | |
18 | */ | |
19 | ||
20 | ||
3b659fb8 | 21 | #include <linux/kernel.h> |
e7a480d2 | 22 | #include <linux/module.h> |
e7a480d2 | 23 | #include <linux/init.h> |
e7a480d2 | 24 | #include <linux/major.h> |
e7a480d2 | 25 | #include <linux/errno.h> |
e7a480d2 DB |
26 | #include <linux/ioctl.h> |
27 | #include <linux/proc_fs.h> | |
28 | #include <linux/poll.h> | |
29 | #include <linux/pci.h> | |
5a0e3ad6 | 30 | #include <linux/slab.h> |
e6be4a8c | 31 | #include <linux/seq_file.h> |
0bec0bba | 32 | #include <linux/smp_lock.h> |
e7a480d2 | 33 | #include <linux/workqueue.h> |
e7a480d2 | 34 | |
e7a480d2 DB |
35 | #include <pcmcia/cs_types.h> |
36 | #include <pcmcia/cs.h> | |
e7a480d2 | 37 | #include <pcmcia/cistpl.h> |
4aeba013 | 38 | #include <pcmcia/cisreg.h> |
e7a480d2 DB |
39 | #include <pcmcia/ds.h> |
40 | #include <pcmcia/ss.h> | |
41 | ||
42 | #include "cs_internal.h" | |
e7a480d2 DB |
43 | |
44 | static int major_dev = -1; | |
45 | ||
46 | ||
47 | /* Device user information */ | |
48 | #define MAX_EVENTS 32 | |
49 | #define USER_MAGIC 0x7ea4 | |
50 | #define CHECK_USER(u) \ | |
51 | (((u) == NULL) || ((u)->user_magic != USER_MAGIC)) | |
52 | ||
53 | typedef struct user_info_t { | |
54 | u_int user_magic; | |
55 | int event_head, event_tail; | |
56 | event_t event[MAX_EVENTS]; | |
57 | struct user_info_t *next; | |
dc109497 | 58 | struct pcmcia_socket *socket; |
e7a480d2 DB |
59 | } user_info_t; |
60 | ||
61 | ||
855cdf13 DB |
62 | static struct pcmcia_device *get_pcmcia_device(struct pcmcia_socket *s, |
63 | unsigned int function) | |
64 | { | |
65 | struct pcmcia_device *p_dev = NULL; | |
855cdf13 | 66 | |
00ce99ff | 67 | mutex_lock(&s->ops_mutex); |
855cdf13 DB |
68 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { |
69 | if (p_dev->func == function) { | |
00ce99ff | 70 | mutex_unlock(&s->ops_mutex); |
855cdf13 DB |
71 | return pcmcia_get_dev(p_dev); |
72 | } | |
73 | } | |
00ce99ff | 74 | mutex_unlock(&s->ops_mutex); |
855cdf13 DB |
75 | return NULL; |
76 | } | |
e7a480d2 | 77 | |
e7a480d2 DB |
78 | /* backwards-compatible accessing of driver --- by name! */ |
79 | ||
855cdf13 | 80 | static struct pcmcia_driver *get_pcmcia_driver(dev_info_t *dev_info) |
e7a480d2 DB |
81 | { |
82 | struct device_driver *drv; | |
83 | struct pcmcia_driver *p_drv; | |
84 | ||
85 | drv = driver_find((char *) dev_info, &pcmcia_bus_type); | |
86 | if (!drv) | |
87 | return NULL; | |
88 | ||
89 | p_drv = container_of(drv, struct pcmcia_driver, drv); | |
90 | ||
9fea84f4 | 91 | return p_drv; |
e7a480d2 DB |
92 | } |
93 | ||
94 | ||
95 | #ifdef CONFIG_PROC_FS | |
9fea84f4 | 96 | static struct proc_dir_entry *proc_pccard; |
e7a480d2 | 97 | |
e6be4a8c | 98 | static int proc_read_drivers_callback(struct device_driver *driver, void *_m) |
e7a480d2 | 99 | { |
e6be4a8c | 100 | struct seq_file *m = _m; |
e7a480d2 DB |
101 | struct pcmcia_driver *p_drv = container_of(driver, |
102 | struct pcmcia_driver, drv); | |
103 | ||
e6be4a8c | 104 | seq_printf(m, "%-24.24s 1 %d\n", p_drv->drv.name, |
e7a480d2 DB |
105 | #ifdef CONFIG_MODULE_UNLOAD |
106 | (p_drv->owner) ? module_refcount(p_drv->owner) : 1 | |
107 | #else | |
108 | 1 | |
109 | #endif | |
110 | ); | |
e7a480d2 DB |
111 | return 0; |
112 | } | |
113 | ||
e6be4a8c | 114 | static int pccard_drivers_proc_show(struct seq_file *m, void *v) |
e7a480d2 | 115 | { |
e6be4a8c AD |
116 | return bus_for_each_drv(&pcmcia_bus_type, NULL, |
117 | m, proc_read_drivers_callback); | |
118 | } | |
e7a480d2 | 119 | |
e6be4a8c AD |
120 | static int pccard_drivers_proc_open(struct inode *inode, struct file *file) |
121 | { | |
122 | return single_open(file, pccard_drivers_proc_show, NULL); | |
e7a480d2 | 123 | } |
e6be4a8c AD |
124 | |
125 | static const struct file_operations pccard_drivers_proc_fops = { | |
126 | .owner = THIS_MODULE, | |
127 | .open = pccard_drivers_proc_open, | |
128 | .read = seq_read, | |
129 | .llseek = seq_lseek, | |
130 | .release = single_release, | |
131 | }; | |
e7a480d2 DB |
132 | #endif |
133 | ||
c5023801 DB |
134 | |
135 | #ifdef CONFIG_PCMCIA_PROBE | |
136 | ||
137 | static int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) | |
138 | { | |
139 | int irq; | |
140 | u32 mask; | |
141 | ||
142 | irq = adj->resource.irq.IRQ; | |
143 | if ((irq < 0) || (irq > 15)) | |
69ba4433 | 144 | return -EINVAL; |
c5023801 DB |
145 | |
146 | if (adj->Action != REMOVE_MANAGED_RESOURCE) | |
147 | return 0; | |
148 | ||
149 | mask = 1 << irq; | |
150 | ||
151 | if (!(s->irq_mask & mask)) | |
152 | return 0; | |
153 | ||
154 | s->irq_mask &= ~mask; | |
155 | ||
156 | return 0; | |
157 | } | |
158 | ||
159 | #else | |
160 | ||
9fea84f4 DB |
161 | static inline int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) |
162 | { | |
4c89e88b | 163 | return 0; |
c5023801 DB |
164 | } |
165 | ||
166 | #endif | |
167 | ||
168 | static int pcmcia_adjust_resource_info(adjust_t *adj) | |
169 | { | |
170 | struct pcmcia_socket *s; | |
de6405e9 | 171 | int ret = -ENOSYS; |
c5023801 DB |
172 | |
173 | down_read(&pcmcia_socket_list_rwsem); | |
174 | list_for_each_entry(s, &pcmcia_socket_list, socket_list) { | |
175 | ||
176 | if (adj->Resource == RES_IRQ) | |
177 | ret = adjust_irq(s, adj); | |
178 | ||
179 | else if (s->resource_ops->add_io) { | |
180 | unsigned long begin, end; | |
181 | ||
182 | /* you can't use the old interface if the new | |
183 | * one was used before */ | |
00ce99ff | 184 | mutex_lock(&s->ops_mutex); |
c5023801 DB |
185 | if ((s->resource_setup_new) && |
186 | !(s->resource_setup_old)) { | |
00ce99ff | 187 | mutex_unlock(&s->ops_mutex); |
c5023801 DB |
188 | continue; |
189 | } else if (!(s->resource_setup_old)) | |
190 | s->resource_setup_old = 1; | |
c5023801 DB |
191 | |
192 | switch (adj->Resource) { | |
193 | case RES_MEMORY_RANGE: | |
194 | begin = adj->resource.memory.Base; | |
195 | end = adj->resource.memory.Base + adj->resource.memory.Size - 1; | |
196 | if (s->resource_ops->add_mem) | |
9fea84f4 | 197 | ret = s->resource_ops->add_mem(s, adj->Action, begin, end); |
c5023801 DB |
198 | case RES_IO_RANGE: |
199 | begin = adj->resource.io.BasePort; | |
200 | end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1; | |
201 | if (s->resource_ops->add_io) | |
202 | ret = s->resource_ops->add_io(s, adj->Action, begin, end); | |
203 | } | |
204 | if (!ret) { | |
205 | /* as there's no way we know this is the | |
206 | * last call to adjust_resource_info, we | |
207 | * always need to assume this is the latest | |
208 | * one... */ | |
c5023801 | 209 | s->resource_setup_done = 1; |
c5023801 | 210 | } |
cfe5d809 | 211 | mutex_unlock(&s->ops_mutex); |
c5023801 DB |
212 | } |
213 | } | |
214 | up_read(&pcmcia_socket_list_rwsem); | |
215 | ||
9fea84f4 | 216 | return ret; |
c5023801 DB |
217 | } |
218 | ||
d7b0364b DB |
219 | |
220 | /** pcmcia_get_window | |
221 | */ | |
222 | static int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *wh_out, | |
223 | window_handle_t wh, win_req_t *req) | |
224 | { | |
82f88e36 | 225 | pccard_mem_map *win; |
d7b0364b DB |
226 | window_handle_t w; |
227 | ||
228 | wh--; | |
229 | if (!s || !(s->state & SOCKET_PRESENT)) | |
230 | return -ENODEV; | |
231 | if (wh >= MAX_WIN) | |
232 | return -EINVAL; | |
233 | for (w = wh; w < MAX_WIN; w++) | |
234 | if (s->state & SOCKET_WIN_REQ(w)) | |
235 | break; | |
236 | if (w == MAX_WIN) | |
237 | return -EINVAL; | |
238 | win = &s->win[w]; | |
82f88e36 DB |
239 | req->Base = win->res->start; |
240 | req->Size = win->res->end - win->res->start + 1; | |
241 | req->AccessSpeed = win->speed; | |
d7b0364b | 242 | req->Attributes = 0; |
82f88e36 | 243 | if (win->flags & MAP_ATTRIB) |
d7b0364b | 244 | req->Attributes |= WIN_MEMORY_TYPE_AM; |
82f88e36 | 245 | if (win->flags & MAP_ACTIVE) |
d7b0364b | 246 | req->Attributes |= WIN_ENABLE; |
82f88e36 | 247 | if (win->flags & MAP_16BIT) |
d7b0364b | 248 | req->Attributes |= WIN_DATA_WIDTH_16; |
82f88e36 | 249 | if (win->flags & MAP_USE_WAIT) |
d7b0364b DB |
250 | req->Attributes |= WIN_USE_WAIT; |
251 | ||
252 | *wh_out = w + 1; | |
253 | return 0; | |
254 | } /* pcmcia_get_window */ | |
255 | ||
256 | ||
257 | /** pcmcia_get_mem_page | |
258 | * | |
259 | * Change the card address of an already open memory window. | |
260 | */ | |
261 | static int pcmcia_get_mem_page(struct pcmcia_socket *skt, window_handle_t wh, | |
262 | memreq_t *req) | |
263 | { | |
264 | wh--; | |
265 | if (wh >= MAX_WIN) | |
266 | return -EINVAL; | |
267 | ||
268 | req->Page = 0; | |
82f88e36 | 269 | req->CardOffset = skt->win[wh].card_start; |
d7b0364b DB |
270 | return 0; |
271 | } /* pcmcia_get_mem_page */ | |
272 | ||
273 | ||
4aeba013 DB |
274 | /** pccard_get_status |
275 | * | |
276 | * Get the current socket state bits. We don't support the latched | |
277 | * SocketState yet: I haven't seen any point for it. | |
278 | */ | |
279 | ||
280 | static int pccard_get_status(struct pcmcia_socket *s, | |
281 | struct pcmcia_device *p_dev, | |
282 | cs_status_t *status) | |
283 | { | |
284 | config_t *c; | |
285 | int val; | |
286 | ||
287 | s->ops->get_status(s, &val); | |
288 | status->CardState = status->SocketState = 0; | |
289 | status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0; | |
290 | status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0; | |
291 | status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0; | |
292 | status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0; | |
293 | if (s->state & SOCKET_SUSPEND) | |
294 | status->CardState |= CS_EVENT_PM_SUSPEND; | |
295 | if (!(s->state & SOCKET_PRESENT)) | |
3939c1ef | 296 | return -ENODEV; |
4aeba013 DB |
297 | |
298 | c = (p_dev) ? p_dev->function_config : NULL; | |
299 | ||
300 | if ((c != NULL) && (c->state & CONFIG_LOCKED) && | |
301 | (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) { | |
302 | u_char reg; | |
303 | if (c->CardValues & PRESENT_PIN_REPLACE) { | |
304 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, ®); | |
305 | status->CardState |= | |
306 | (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0; | |
307 | status->CardState |= | |
308 | (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0; | |
309 | status->CardState |= | |
310 | (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0; | |
311 | status->CardState |= | |
312 | (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0; | |
313 | } else { | |
314 | /* No PRR? Then assume we're always ready */ | |
315 | status->CardState |= CS_EVENT_READY_CHANGE; | |
316 | } | |
317 | if (c->CardValues & PRESENT_EXT_STATUS) { | |
318 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, ®); | |
319 | status->CardState |= | |
320 | (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0; | |
321 | } | |
4c89e88b | 322 | return 0; |
4aeba013 DB |
323 | } |
324 | status->CardState |= | |
325 | (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0; | |
326 | status->CardState |= | |
327 | (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0; | |
328 | status->CardState |= | |
329 | (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0; | |
330 | status->CardState |= | |
331 | (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0; | |
4c89e88b | 332 | return 0; |
4aeba013 | 333 | } /* pccard_get_status */ |
c5023801 | 334 | |
a0779327 | 335 | static int pccard_get_configuration_info(struct pcmcia_socket *s, |
64f34642 DB |
336 | struct pcmcia_device *p_dev, |
337 | config_info_t *config) | |
338 | { | |
339 | config_t *c; | |
340 | ||
341 | if (!(s->state & SOCKET_PRESENT)) | |
3939c1ef | 342 | return -ENODEV; |
64f34642 DB |
343 | |
344 | ||
345 | #ifdef CONFIG_CARDBUS | |
346 | if (s->state & SOCKET_CARDBUS) { | |
347 | memset(config, 0, sizeof(config_info_t)); | |
348 | config->Vcc = s->socket.Vcc; | |
349 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
350 | config->Option = s->cb_dev->subordinate->number; | |
351 | if (s->state & SOCKET_CARDBUS_CONFIG) { | |
352 | config->Attributes = CONF_VALID_CLIENT; | |
353 | config->IntType = INT_CARDBUS; | |
354 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
355 | if (config->AssignedIRQ) | |
356 | config->Attributes |= CONF_ENABLE_IRQ; | |
357 | if (s->io[0].res) { | |
358 | config->BasePort1 = s->io[0].res->start; | |
359 | config->NumPorts1 = s->io[0].res->end - | |
360 | config->BasePort1 + 1; | |
361 | } | |
362 | } | |
4c89e88b | 363 | return 0; |
64f34642 DB |
364 | } |
365 | #endif | |
366 | ||
367 | if (p_dev) { | |
368 | c = p_dev->function_config; | |
369 | config->Function = p_dev->func; | |
370 | } else { | |
371 | c = NULL; | |
372 | config->Function = 0; | |
373 | } | |
374 | ||
375 | if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { | |
376 | config->Attributes = 0; | |
377 | config->Vcc = s->socket.Vcc; | |
378 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
4c89e88b | 379 | return 0; |
64f34642 DB |
380 | } |
381 | ||
382 | config->Attributes = c->Attributes | CONF_VALID_CLIENT; | |
383 | config->Vcc = s->socket.Vcc; | |
384 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
385 | config->IntType = c->IntType; | |
386 | config->ConfigBase = c->ConfigBase; | |
387 | config->Status = c->Status; | |
388 | config->Pin = c->Pin; | |
389 | config->Copy = c->Copy; | |
390 | config->Option = c->Option; | |
391 | config->ExtStatus = c->ExtStatus; | |
392 | config->Present = config->CardValues = c->CardValues; | |
393 | config->IRQAttributes = c->irq.Attributes; | |
394 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
395 | config->BasePort1 = c->io.BasePort1; | |
396 | config->NumPorts1 = c->io.NumPorts1; | |
397 | config->Attributes1 = c->io.Attributes1; | |
398 | config->BasePort2 = c->io.BasePort2; | |
399 | config->NumPorts2 = c->io.NumPorts2; | |
400 | config->Attributes2 = c->io.Attributes2; | |
401 | config->IOAddrLines = c->io.IOAddrLines; | |
402 | ||
4c89e88b | 403 | return 0; |
64f34642 DB |
404 | } /* pccard_get_configuration_info */ |
405 | ||
406 | ||
e7a480d2 DB |
407 | /*====================================================================== |
408 | ||
409 | These manage a ring buffer of events pending for one user process | |
410 | ||
411 | ======================================================================*/ | |
412 | ||
413 | ||
414 | static int queue_empty(user_info_t *user) | |
415 | { | |
416 | return (user->event_head == user->event_tail); | |
417 | } | |
418 | ||
419 | static event_t get_queued_event(user_info_t *user) | |
420 | { | |
421 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
422 | return user->event[user->event_tail]; | |
423 | } | |
424 | ||
425 | static void queue_event(user_info_t *user, event_t event) | |
426 | { | |
427 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
428 | if (user->event_head == user->event_tail) | |
429 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
430 | user->event[user->event_head] = event; | |
431 | } | |
432 | ||
dc109497 | 433 | void handle_event(struct pcmcia_socket *s, event_t event) |
e7a480d2 DB |
434 | { |
435 | user_info_t *user; | |
436 | for (user = s->user; user; user = user->next) | |
437 | queue_event(user, event); | |
438 | wake_up_interruptible(&s->queue); | |
439 | } | |
440 | ||
441 | ||
442 | /*====================================================================== | |
443 | ||
444 | bind_request() and bind_device() are merged by now. Register_client() | |
445 | is called right at the end of bind_request(), during the driver's | |
446 | ->attach() call. Individual descriptions: | |
447 | ||
448 | bind_request() connects a socket to a particular client driver. | |
449 | It looks up the specified device ID in the list of registered | |
450 | drivers, binds it to the socket, and tries to create an instance | |
451 | of the device. unbind_request() deletes a driver instance. | |
452 | ||
453 | Bind_device() associates a device driver with a particular socket. | |
454 | It is normally called by Driver Services after it has identified | |
455 | a newly inserted card. An instance of that driver will then be | |
456 | eligible to register as a client of this socket. | |
457 | ||
458 | Register_client() uses the dev_info_t handle to match the | |
459 | caller with a socket. The driver must have already been bound | |
460 | to a socket with bind_device() -- in fact, bind_device() | |
461 | allocates the client structure that will be used. | |
462 | ||
463 | ======================================================================*/ | |
464 | ||
dc109497 | 465 | static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) |
e7a480d2 DB |
466 | { |
467 | struct pcmcia_driver *p_drv; | |
468 | struct pcmcia_device *p_dev; | |
469 | int ret = 0; | |
e7a480d2 | 470 | |
dc109497 | 471 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
472 | if (!s) |
473 | return -EINVAL; | |
474 | ||
d50dbec3 | 475 | pr_debug("bind_request(%d, '%s')\n", s->sock, |
e7a480d2 DB |
476 | (char *)bind_info->dev_info); |
477 | ||
478 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
479 | if (!p_drv) { | |
480 | ret = -EINVAL; | |
481 | goto err_put; | |
482 | } | |
483 | ||
484 | if (!try_module_get(p_drv->owner)) { | |
485 | ret = -EINVAL; | |
486 | goto err_put_driver; | |
487 | } | |
488 | ||
00ce99ff | 489 | mutex_lock(&s->ops_mutex); |
9fea84f4 | 490 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { |
e7a480d2 DB |
491 | if (p_dev->func == bind_info->function) { |
492 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
493 | if (p_dev->cardmgr) { | |
494 | /* if there's already a device | |
495 | * registered, and it was registered | |
496 | * by userspace before, we need to | |
497 | * return the "instance". */ | |
00ce99ff | 498 | mutex_unlock(&s->ops_mutex); |
fd238232 | 499 | bind_info->instance = p_dev; |
e7a480d2 DB |
500 | ret = -EBUSY; |
501 | goto err_put_module; | |
502 | } else { | |
503 | /* the correct driver managed to bind | |
504 | * itself magically to the correct | |
505 | * device. */ | |
00ce99ff | 506 | mutex_unlock(&s->ops_mutex); |
e7a480d2 DB |
507 | p_dev->cardmgr = p_drv; |
508 | ret = 0; | |
509 | goto err_put_module; | |
510 | } | |
511 | } else if (!p_dev->dev.driver) { | |
512 | /* there's already a device available where | |
513 | * no device has been bound to yet. So we don't | |
514 | * need to register a device! */ | |
00ce99ff | 515 | mutex_unlock(&s->ops_mutex); |
e7a480d2 DB |
516 | goto rescan; |
517 | } | |
518 | } | |
519 | } | |
00ce99ff | 520 | mutex_unlock(&s->ops_mutex); |
e7a480d2 DB |
521 | |
522 | p_dev = pcmcia_device_add(s, bind_info->function); | |
523 | if (!p_dev) { | |
524 | ret = -EIO; | |
525 | goto err_put_module; | |
526 | } | |
527 | ||
528 | rescan: | |
529 | p_dev->cardmgr = p_drv; | |
530 | ||
531 | /* if a driver is already running, we can abort */ | |
532 | if (p_dev->dev.driver) | |
533 | goto err_put_module; | |
534 | ||
535 | /* | |
536 | * Prevent this racing with a card insertion. | |
537 | */ | |
7fe908dd | 538 | mutex_lock(&s->skt_mutex); |
4deb7c1e | 539 | ret = bus_rescan_devices(&pcmcia_bus_type); |
7fe908dd | 540 | mutex_unlock(&s->skt_mutex); |
4deb7c1e JG |
541 | if (ret) |
542 | goto err_put_module; | |
e7a480d2 DB |
543 | |
544 | /* check whether the driver indeed matched. I don't care if this | |
545 | * is racy or not, because it can only happen on cardmgr access | |
546 | * paths... | |
547 | */ | |
548 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
549 | p_dev->cardmgr = NULL; | |
550 | ||
551 | err_put_module: | |
552 | module_put(p_drv->owner); | |
553 | err_put_driver: | |
554 | put_driver(&p_drv->drv); | |
555 | err_put: | |
dc109497 | 556 | pcmcia_put_socket(s); |
e7a480d2 | 557 | |
9fea84f4 | 558 | return ret; |
e7a480d2 DB |
559 | } /* bind_request */ |
560 | ||
33519ddd DB |
561 | #ifdef CONFIG_CARDBUS |
562 | ||
563 | static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) | |
564 | { | |
565 | if (!s || !(s->state & SOCKET_CARDBUS)) | |
566 | return NULL; | |
e7a480d2 | 567 | |
33519ddd DB |
568 | return s->cb_dev->subordinate; |
569 | } | |
570 | #endif | |
e7a480d2 | 571 | |
dc109497 | 572 | static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) |
e7a480d2 DB |
573 | { |
574 | dev_node_t *node; | |
575 | struct pcmcia_device *p_dev; | |
e2d40963 | 576 | struct pcmcia_driver *p_drv; |
e7a480d2 DB |
577 | int ret = 0; |
578 | ||
579 | #ifdef CONFIG_CARDBUS | |
580 | /* | |
581 | * Some unbelievably ugly code to associate the PCI cardbus | |
582 | * device and its driver with the PCMCIA "bind" information. | |
583 | */ | |
584 | { | |
585 | struct pci_bus *bus; | |
586 | ||
dc109497 | 587 | bus = pcmcia_lookup_bus(s); |
e7a480d2 DB |
588 | if (bus) { |
589 | struct list_head *list; | |
590 | struct pci_dev *dev = NULL; | |
591 | ||
592 | list = bus->devices.next; | |
593 | while (list != &bus->devices) { | |
594 | struct pci_dev *pdev = pci_dev_b(list); | |
595 | list = list->next; | |
596 | ||
597 | if (first) { | |
598 | dev = pdev; | |
599 | break; | |
600 | } | |
601 | ||
602 | /* Try to handle "next" here some way? */ | |
603 | } | |
604 | if (dev && dev->driver) { | |
605 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
606 | bind_info->major = 0; | |
607 | bind_info->minor = 0; | |
608 | bind_info->next = NULL; | |
609 | return 0; | |
610 | } | |
611 | } | |
612 | } | |
613 | #endif | |
614 | ||
00ce99ff | 615 | mutex_lock(&s->ops_mutex); |
e7a480d2 DB |
616 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { |
617 | if (p_dev->func == bind_info->function) { | |
618 | p_dev = pcmcia_get_dev(p_dev); | |
619 | if (!p_dev) | |
620 | continue; | |
621 | goto found; | |
622 | } | |
623 | } | |
00ce99ff | 624 | mutex_unlock(&s->ops_mutex); |
e7a480d2 DB |
625 | return -ENODEV; |
626 | ||
627 | found: | |
00ce99ff | 628 | mutex_unlock(&s->ops_mutex); |
e7a480d2 | 629 | |
e2d40963 DB |
630 | p_drv = to_pcmcia_drv(p_dev->dev.driver); |
631 | if (p_drv && !p_dev->_locked) { | |
e7a480d2 DB |
632 | ret = -EAGAIN; |
633 | goto err_put; | |
634 | } | |
635 | ||
636 | if (first) | |
fd238232 | 637 | node = p_dev->dev_node; |
e7a480d2 | 638 | else |
fd238232 | 639 | for (node = p_dev->dev_node; node; node = node->next) |
e7a480d2 DB |
640 | if (node == bind_info->next) |
641 | break; | |
642 | if (!node) { | |
643 | ret = -ENODEV; | |
644 | goto err_put; | |
645 | } | |
646 | ||
647 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
648 | bind_info->major = node->major; | |
649 | bind_info->minor = node->minor; | |
650 | bind_info->next = node->next; | |
651 | ||
652 | err_put: | |
653 | pcmcia_put_dev(p_dev); | |
9fea84f4 | 654 | return ret; |
e7a480d2 DB |
655 | } /* get_device_info */ |
656 | ||
657 | ||
658 | static int ds_open(struct inode *inode, struct file *file) | |
659 | { | |
660 | socket_t i = iminor(inode); | |
dc109497 | 661 | struct pcmcia_socket *s; |
e7a480d2 | 662 | user_info_t *user; |
9fea84f4 | 663 | static int warning_printed; |
0bec0bba | 664 | int ret = 0; |
e7a480d2 | 665 | |
d50dbec3 | 666 | pr_debug("ds_open(socket %d)\n", i); |
e7a480d2 | 667 | |
0bec0bba | 668 | lock_kernel(); |
dc109497 | 669 | s = pcmcia_get_socket_by_nr(i); |
0bec0bba JC |
670 | if (!s) { |
671 | ret = -ENODEV; | |
672 | goto out; | |
673 | } | |
dc109497 | 674 | s = pcmcia_get_socket(s); |
0bec0bba JC |
675 | if (!s) { |
676 | ret = -ENODEV; | |
677 | goto out; | |
678 | } | |
e7a480d2 DB |
679 | |
680 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 681 | if (s->pcmcia_state.busy) { |
dc109497 | 682 | pcmcia_put_socket(s); |
0bec0bba JC |
683 | ret = -EBUSY; |
684 | goto out; | |
e7a480d2 DB |
685 | } |
686 | else | |
b5e43913 | 687 | s->pcmcia_state.busy = 1; |
e7a480d2 DB |
688 | } |
689 | ||
690 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
691 | if (!user) { | |
dc109497 | 692 | pcmcia_put_socket(s); |
0bec0bba JC |
693 | ret = -ENOMEM; |
694 | goto out; | |
e7a480d2 DB |
695 | } |
696 | user->event_tail = user->event_head = 0; | |
697 | user->next = s->user; | |
698 | user->user_magic = USER_MAGIC; | |
699 | user->socket = s; | |
700 | s->user = user; | |
701 | file->private_data = user; | |
702 | ||
c352ec8a DB |
703 | if (!warning_printed) { |
704 | printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " | |
73d58588 | 705 | "usage from process: %s.\n", current->comm); |
c352ec8a DB |
706 | printk(KERN_INFO "pcmcia: This interface will soon be removed from " |
707 | "the kernel; please expect breakage unless you upgrade " | |
708 | "to new tools.\n"); | |
709 | printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" | |
710 | "utils/kernel/pcmcia/pcmcia.html for details.\n"); | |
711 | warning_printed = 1; | |
712 | } | |
713 | ||
15d0a873 | 714 | if (atomic_read(&s->present)) |
e7a480d2 | 715 | queue_event(user, CS_EVENT_CARD_INSERTION); |
0bec0bba JC |
716 | out: |
717 | unlock_kernel(); | |
718 | return ret; | |
e7a480d2 DB |
719 | } /* ds_open */ |
720 | ||
721 | /*====================================================================*/ | |
722 | ||
723 | static int ds_release(struct inode *inode, struct file *file) | |
724 | { | |
dc109497 | 725 | struct pcmcia_socket *s; |
e7a480d2 DB |
726 | user_info_t *user, **link; |
727 | ||
d50dbec3 | 728 | pr_debug("ds_release(socket %d)\n", iminor(inode)); |
e7a480d2 DB |
729 | |
730 | user = file->private_data; | |
731 | if (CHECK_USER(user)) | |
732 | goto out; | |
733 | ||
734 | s = user->socket; | |
735 | ||
736 | /* Unlink user data structure */ | |
9fea84f4 | 737 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) |
b5e43913 | 738 | s->pcmcia_state.busy = 0; |
9fea84f4 | 739 | |
e7a480d2 DB |
740 | file->private_data = NULL; |
741 | for (link = &s->user; *link; link = &(*link)->next) | |
9fea84f4 DB |
742 | if (*link == user) |
743 | break; | |
e7a480d2 DB |
744 | if (link == NULL) |
745 | goto out; | |
746 | *link = user->next; | |
747 | user->user_magic = 0; | |
748 | kfree(user); | |
dc109497 | 749 | pcmcia_put_socket(s); |
e7a480d2 DB |
750 | out: |
751 | return 0; | |
752 | } /* ds_release */ | |
753 | ||
754 | /*====================================================================*/ | |
755 | ||
756 | static ssize_t ds_read(struct file *file, char __user *buf, | |
757 | size_t count, loff_t *ppos) | |
758 | { | |
dc109497 | 759 | struct pcmcia_socket *s; |
e7a480d2 DB |
760 | user_info_t *user; |
761 | int ret; | |
762 | ||
d50dbec3 | 763 | pr_debug("ds_read(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
764 | |
765 | if (count < 4) | |
766 | return -EINVAL; | |
767 | ||
768 | user = file->private_data; | |
769 | if (CHECK_USER(user)) | |
770 | return -EIO; | |
771 | ||
772 | s = user->socket; | |
e7a480d2 DB |
773 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); |
774 | if (ret == 0) | |
775 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
776 | ||
777 | return ret; | |
778 | } /* ds_read */ | |
779 | ||
780 | /*====================================================================*/ | |
781 | ||
782 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
783 | size_t count, loff_t *ppos) | |
784 | { | |
d50dbec3 | 785 | pr_debug("ds_write(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
786 | |
787 | if (count != 4) | |
788 | return -EINVAL; | |
789 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
790 | return -EBADF; | |
791 | ||
792 | return -EIO; | |
793 | } /* ds_write */ | |
794 | ||
795 | /*====================================================================*/ | |
796 | ||
797 | /* No kernel lock - fine */ | |
798 | static u_int ds_poll(struct file *file, poll_table *wait) | |
799 | { | |
dc109497 | 800 | struct pcmcia_socket *s; |
e7a480d2 DB |
801 | user_info_t *user; |
802 | ||
d50dbec3 | 803 | pr_debug("ds_poll(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
804 | |
805 | user = file->private_data; | |
806 | if (CHECK_USER(user)) | |
807 | return POLLERR; | |
808 | s = user->socket; | |
809 | /* | |
810 | * We don't check for a dead socket here since that | |
811 | * will send cardmgr into an endless spin. | |
812 | */ | |
813 | poll_wait(file, &s->queue, wait); | |
814 | if (!queue_empty(user)) | |
815 | return POLLIN | POLLRDNORM; | |
816 | return 0; | |
817 | } /* ds_poll */ | |
818 | ||
819 | /*====================================================================*/ | |
820 | ||
55929332 | 821 | static int ds_ioctl(struct file *file, u_int cmd, u_long arg) |
e7a480d2 | 822 | { |
dc109497 | 823 | struct pcmcia_socket *s; |
e7a480d2 DB |
824 | void __user *uarg = (char __user *)arg; |
825 | u_int size; | |
826 | int ret, err; | |
827 | ds_ioctl_arg_t *buf; | |
828 | user_info_t *user; | |
829 | ||
d50dbec3 | 830 | pr_debug("ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); |
e7a480d2 DB |
831 | |
832 | user = file->private_data; | |
833 | if (CHECK_USER(user)) | |
834 | return -EIO; | |
835 | ||
836 | s = user->socket; | |
e7a480d2 DB |
837 | |
838 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
9fea84f4 DB |
839 | if (size > sizeof(ds_ioctl_arg_t)) |
840 | return -EINVAL; | |
e7a480d2 DB |
841 | |
842 | /* Permission check */ | |
843 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
844 | return -EPERM; | |
845 | ||
846 | if (cmd & IOC_IN) { | |
847 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
d50dbec3 | 848 | pr_debug("ds_ioctl(): verify_read = %d\n", -EFAULT); |
e7a480d2 DB |
849 | return -EFAULT; |
850 | } | |
851 | } | |
852 | if (cmd & IOC_OUT) { | |
853 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
d50dbec3 | 854 | pr_debug("ds_ioctl(): verify_write = %d\n", -EFAULT); |
e7a480d2 DB |
855 | return -EFAULT; |
856 | } | |
857 | } | |
858 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
859 | if (!buf) | |
860 | return -ENOMEM; | |
861 | ||
862 | err = ret = 0; | |
863 | ||
9374074f DB |
864 | if (cmd & IOC_IN) { |
865 | if (__copy_from_user((char *)buf, uarg, size)) { | |
866 | err = -EFAULT; | |
867 | goto free_out; | |
868 | } | |
869 | } | |
e7a480d2 DB |
870 | |
871 | switch (cmd) { | |
872 | case DS_ADJUST_RESOURCE_INFO: | |
873 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
874 | break; | |
e7a480d2 DB |
875 | case DS_GET_CONFIGURATION_INFO: |
876 | if (buf->config.Function && | |
dc109497 | 877 | (buf->config.Function >= s->functions)) |
926c5402 | 878 | ret = -EINVAL; |
855cdf13 DB |
879 | else { |
880 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); | |
f47ad214 DR |
881 | ret = pccard_get_configuration_info(s, p_dev, &buf->config); |
882 | pcmcia_put_dev(p_dev); | |
855cdf13 | 883 | } |
e7a480d2 DB |
884 | break; |
885 | case DS_GET_FIRST_TUPLE: | |
7fe908dd | 886 | mutex_lock(&s->skt_mutex); |
dc109497 | 887 | pcmcia_validate_mem(s); |
7fe908dd | 888 | mutex_unlock(&s->skt_mutex); |
dc109497 | 889 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
890 | break; |
891 | case DS_GET_NEXT_TUPLE: | |
dc109497 | 892 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
893 | break; |
894 | case DS_GET_TUPLE_DATA: | |
895 | buf->tuple.TupleData = buf->tuple_parse.data; | |
896 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
dc109497 | 897 | ret = pccard_get_tuple_data(s, &buf->tuple); |
e7a480d2 DB |
898 | break; |
899 | case DS_PARSE_TUPLE: | |
900 | buf->tuple.TupleData = buf->tuple_parse.data; | |
2f3061eb | 901 | ret = pcmcia_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); |
e7a480d2 DB |
902 | break; |
903 | case DS_RESET_CARD: | |
994917f8 | 904 | ret = pcmcia_reset_card(s); |
e7a480d2 DB |
905 | break; |
906 | case DS_GET_STATUS: | |
855cdf13 DB |
907 | if (buf->status.Function && |
908 | (buf->status.Function >= s->functions)) | |
926c5402 | 909 | ret = -EINVAL; |
855cdf13 DB |
910 | else { |
911 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); | |
f47ad214 DR |
912 | ret = pccard_get_status(s, p_dev, &buf->status); |
913 | pcmcia_put_dev(p_dev); | |
855cdf13 DB |
914 | } |
915 | break; | |
e7a480d2 | 916 | case DS_VALIDATE_CIS: |
7fe908dd | 917 | mutex_lock(&s->skt_mutex); |
dc109497 | 918 | pcmcia_validate_mem(s); |
7fe908dd | 919 | mutex_unlock(&s->skt_mutex); |
84897fc0 | 920 | ret = pccard_validate_cis(s, &buf->cisinfo.Chains); |
e7a480d2 DB |
921 | break; |
922 | case DS_SUSPEND_CARD: | |
f971dbd5 | 923 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND); |
e7a480d2 DB |
924 | break; |
925 | case DS_RESUME_CARD: | |
f971dbd5 | 926 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME); |
e7a480d2 DB |
927 | break; |
928 | case DS_EJECT_CARD: | |
f971dbd5 | 929 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT); |
e7a480d2 DB |
930 | break; |
931 | case DS_INSERT_CARD: | |
f971dbd5 | 932 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT); |
e7a480d2 DB |
933 | break; |
934 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
935 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
936 | err = -EPERM; | |
937 | goto free_out; | |
938 | } | |
855cdf13 | 939 | |
926c5402 | 940 | ret = -EINVAL; |
855cdf13 DB |
941 | |
942 | if (!(buf->conf_reg.Function && | |
943 | (buf->conf_reg.Function >= s->functions))) { | |
944 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); | |
73d58588 | 945 | if (p_dev) { |
855cdf13 | 946 | ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); |
73d58588 BH |
947 | pcmcia_put_dev(p_dev); |
948 | } | |
855cdf13 | 949 | } |
e7a480d2 DB |
950 | break; |
951 | case DS_GET_FIRST_REGION: | |
952 | case DS_GET_NEXT_REGION: | |
953 | case DS_BIND_MTD: | |
954 | if (!capable(CAP_SYS_ADMIN)) { | |
955 | err = -EPERM; | |
956 | goto free_out; | |
957 | } else { | |
a9c56953 MK |
958 | printk_once(KERN_WARNING |
959 | "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
960 | printk_once(KERN_WARNING "MTD handling any more.\n"); | |
e7a480d2 DB |
961 | } |
962 | err = -EINVAL; | |
963 | goto free_out; | |
964 | break; | |
965 | case DS_GET_FIRST_WINDOW: | |
0bdf9b3d | 966 | ret = pcmcia_get_window(s, &buf->win_info.handle, 1, |
e7a480d2 DB |
967 | &buf->win_info.window); |
968 | break; | |
969 | case DS_GET_NEXT_WINDOW: | |
dc109497 | 970 | ret = pcmcia_get_window(s, &buf->win_info.handle, |
0bdf9b3d | 971 | buf->win_info.handle + 1, &buf->win_info.window); |
e7a480d2 DB |
972 | break; |
973 | case DS_GET_MEM_PAGE: | |
16456eba | 974 | ret = pcmcia_get_mem_page(s, buf->win_info.handle, |
e7a480d2 DB |
975 | &buf->win_info.map); |
976 | break; | |
977 | case DS_REPLACE_CIS: | |
53efec95 | 978 | ret = pcmcia_replace_cis(s, buf->cisdump.Data, buf->cisdump.Length); |
e7a480d2 DB |
979 | break; |
980 | case DS_BIND_REQUEST: | |
981 | if (!capable(CAP_SYS_ADMIN)) { | |
982 | err = -EPERM; | |
983 | goto free_out; | |
984 | } | |
985 | err = bind_request(s, &buf->bind_info); | |
986 | break; | |
987 | case DS_GET_DEVICE_INFO: | |
988 | err = get_device_info(s, &buf->bind_info, 1); | |
989 | break; | |
990 | case DS_GET_NEXT_DEVICE: | |
991 | err = get_device_info(s, &buf->bind_info, 0); | |
992 | break; | |
993 | case DS_UNBIND_REQUEST: | |
994 | err = 0; | |
995 | break; | |
996 | default: | |
997 | err = -EINVAL; | |
998 | } | |
999 | ||
4c89e88b | 1000 | if ((err == 0) && (ret != 0)) { |
d50dbec3 | 1001 | pr_debug("ds_ioctl: ret = %d\n", ret); |
e7a480d2 | 1002 | switch (ret) { |
610e2374 DB |
1003 | case -ENODEV: |
1004 | case -EINVAL: | |
1005 | case -EBUSY: | |
1006 | case -ENOSYS: | |
1007 | err = ret; | |
1008 | break; | |
610e2374 | 1009 | case -ENOMEM: |
e7a480d2 | 1010 | err = -ENOSPC; break; |
635d19be | 1011 | case -ENOSPC: |
e7a480d2 | 1012 | err = -ENODATA; break; |
e7a480d2 DB |
1013 | default: |
1014 | err = -EIO; break; | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | if (cmd & IOC_OUT) { | |
9fea84f4 DB |
1019 | if (__copy_to_user(uarg, (char *)buf, size)) |
1020 | err = -EFAULT; | |
e7a480d2 DB |
1021 | } |
1022 | ||
1023 | free_out: | |
1024 | kfree(buf); | |
1025 | return err; | |
1026 | } /* ds_ioctl */ | |
1027 | ||
55929332 AB |
1028 | static long ds_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
1029 | { | |
1030 | int ret; | |
1031 | ||
1032 | lock_kernel(); | |
1033 | ret = ds_ioctl(file, cmd, arg); | |
1034 | unlock_kernel(); | |
1035 | ||
1036 | return ret; | |
1037 | } | |
1038 | ||
1039 | ||
e7a480d2 DB |
1040 | /*====================================================================*/ |
1041 | ||
d54b1fdb | 1042 | static const struct file_operations ds_fops = { |
e7a480d2 DB |
1043 | .owner = THIS_MODULE, |
1044 | .open = ds_open, | |
1045 | .release = ds_release, | |
55929332 | 1046 | .unlocked_ioctl = ds_unlocked_ioctl, |
e7a480d2 DB |
1047 | .read = ds_read, |
1048 | .write = ds_write, | |
1049 | .poll = ds_poll, | |
1050 | }; | |
1051 | ||
9fea84f4 DB |
1052 | void __init pcmcia_setup_ioctl(void) |
1053 | { | |
e7a480d2 DB |
1054 | int i; |
1055 | ||
1056 | /* Set up character device for user mode clients */ | |
1057 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
1a8ceafc | 1058 | if (i < 0) |
e7a480d2 | 1059 | printk(KERN_NOTICE "unable to find a free device # for " |
1a8ceafc | 1060 | "Driver Services (error=%d)\n", i); |
e7a480d2 DB |
1061 | else |
1062 | major_dev = i; | |
1063 | ||
1064 | #ifdef CONFIG_PROC_FS | |
97094dcf | 1065 | proc_pccard = proc_mkdir("bus/pccard", NULL); |
e7a480d2 | 1066 | if (proc_pccard) |
e6be4a8c | 1067 | proc_create("drivers", 0, proc_pccard, &pccard_drivers_proc_fops); |
e7a480d2 DB |
1068 | #endif |
1069 | } | |
1070 | ||
1071 | ||
9fea84f4 DB |
1072 | void __exit pcmcia_cleanup_ioctl(void) |
1073 | { | |
e7a480d2 DB |
1074 | #ifdef CONFIG_PROC_FS |
1075 | if (proc_pccard) { | |
1076 | remove_proc_entry("drivers", proc_pccard); | |
97094dcf | 1077 | remove_proc_entry("bus/pccard", NULL); |
e7a480d2 DB |
1078 | } |
1079 | #endif | |
1080 | if (major_dev != -1) | |
1081 | unregister_chrdev(major_dev, "pcmcia"); | |
1082 | } |