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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> | |
e7a480d2 | 30 | #include <linux/workqueue.h> |
e7a480d2 DB |
31 | |
32 | #define IN_CARD_SERVICES | |
e7a480d2 DB |
33 | #include <pcmcia/cs_types.h> |
34 | #include <pcmcia/cs.h> | |
e7a480d2 DB |
35 | #include <pcmcia/cistpl.h> |
36 | #include <pcmcia/ds.h> | |
37 | #include <pcmcia/ss.h> | |
38 | ||
39 | #include "cs_internal.h" | |
40 | #include "ds_internal.h" | |
41 | ||
42 | static int major_dev = -1; | |
43 | ||
44 | ||
45 | /* Device user information */ | |
46 | #define MAX_EVENTS 32 | |
47 | #define USER_MAGIC 0x7ea4 | |
48 | #define CHECK_USER(u) \ | |
49 | (((u) == NULL) || ((u)->user_magic != USER_MAGIC)) | |
50 | ||
51 | typedef struct user_info_t { | |
52 | u_int user_magic; | |
53 | int event_head, event_tail; | |
54 | event_t event[MAX_EVENTS]; | |
55 | struct user_info_t *next; | |
dc109497 | 56 | struct pcmcia_socket *socket; |
e7a480d2 DB |
57 | } user_info_t; |
58 | ||
59 | ||
60 | #ifdef DEBUG | |
61 | extern int ds_pc_debug; | |
62 | #define cs_socket_name(skt) ((skt)->dev.class_id) | |
63 | ||
64 | #define ds_dbg(lvl, fmt, arg...) do { \ | |
65 | if (ds_pc_debug >= lvl) \ | |
66 | printk(KERN_DEBUG "ds: " fmt , ## arg); \ | |
67 | } while (0) | |
68 | #else | |
69 | #define ds_dbg(lvl, fmt, arg...) do { } while (0) | |
70 | #endif | |
71 | ||
855cdf13 DB |
72 | static struct pcmcia_device *get_pcmcia_device(struct pcmcia_socket *s, |
73 | unsigned int function) | |
74 | { | |
75 | struct pcmcia_device *p_dev = NULL; | |
76 | unsigned long flags; | |
77 | ||
78 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
79 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
80 | if (p_dev->func == function) { | |
81 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
82 | return pcmcia_get_dev(p_dev); | |
83 | } | |
84 | } | |
85 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
86 | return NULL; | |
87 | } | |
e7a480d2 | 88 | |
e7a480d2 DB |
89 | /* backwards-compatible accessing of driver --- by name! */ |
90 | ||
855cdf13 | 91 | static struct pcmcia_driver *get_pcmcia_driver(dev_info_t *dev_info) |
e7a480d2 DB |
92 | { |
93 | struct device_driver *drv; | |
94 | struct pcmcia_driver *p_drv; | |
95 | ||
96 | drv = driver_find((char *) dev_info, &pcmcia_bus_type); | |
97 | if (!drv) | |
98 | return NULL; | |
99 | ||
100 | p_drv = container_of(drv, struct pcmcia_driver, drv); | |
101 | ||
102 | return (p_drv); | |
103 | } | |
104 | ||
105 | ||
106 | #ifdef CONFIG_PROC_FS | |
107 | static struct proc_dir_entry *proc_pccard = NULL; | |
108 | ||
109 | static int proc_read_drivers_callback(struct device_driver *driver, void *d) | |
110 | { | |
111 | char **p = d; | |
112 | struct pcmcia_driver *p_drv = container_of(driver, | |
113 | struct pcmcia_driver, drv); | |
114 | ||
115 | *p += sprintf(*p, "%-24.24s 1 %d\n", p_drv->drv.name, | |
116 | #ifdef CONFIG_MODULE_UNLOAD | |
117 | (p_drv->owner) ? module_refcount(p_drv->owner) : 1 | |
118 | #else | |
119 | 1 | |
120 | #endif | |
121 | ); | |
122 | d = (void *) p; | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | static int proc_read_drivers(char *buf, char **start, off_t pos, | |
128 | int count, int *eof, void *data) | |
129 | { | |
130 | char *p = buf; | |
131 | ||
132 | bus_for_each_drv(&pcmcia_bus_type, NULL, | |
133 | (void *) &p, proc_read_drivers_callback); | |
134 | ||
135 | return (p - buf); | |
136 | } | |
137 | #endif | |
138 | ||
139 | /*====================================================================== | |
140 | ||
141 | These manage a ring buffer of events pending for one user process | |
142 | ||
143 | ======================================================================*/ | |
144 | ||
145 | ||
146 | static int queue_empty(user_info_t *user) | |
147 | { | |
148 | return (user->event_head == user->event_tail); | |
149 | } | |
150 | ||
151 | static event_t get_queued_event(user_info_t *user) | |
152 | { | |
153 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
154 | return user->event[user->event_tail]; | |
155 | } | |
156 | ||
157 | static void queue_event(user_info_t *user, event_t event) | |
158 | { | |
159 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
160 | if (user->event_head == user->event_tail) | |
161 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
162 | user->event[user->event_head] = event; | |
163 | } | |
164 | ||
dc109497 | 165 | void handle_event(struct pcmcia_socket *s, event_t event) |
e7a480d2 DB |
166 | { |
167 | user_info_t *user; | |
168 | for (user = s->user; user; user = user->next) | |
169 | queue_event(user, event); | |
170 | wake_up_interruptible(&s->queue); | |
171 | } | |
172 | ||
173 | ||
174 | /*====================================================================== | |
175 | ||
176 | bind_request() and bind_device() are merged by now. Register_client() | |
177 | is called right at the end of bind_request(), during the driver's | |
178 | ->attach() call. Individual descriptions: | |
179 | ||
180 | bind_request() connects a socket to a particular client driver. | |
181 | It looks up the specified device ID in the list of registered | |
182 | drivers, binds it to the socket, and tries to create an instance | |
183 | of the device. unbind_request() deletes a driver instance. | |
184 | ||
185 | Bind_device() associates a device driver with a particular socket. | |
186 | It is normally called by Driver Services after it has identified | |
187 | a newly inserted card. An instance of that driver will then be | |
188 | eligible to register as a client of this socket. | |
189 | ||
190 | Register_client() uses the dev_info_t handle to match the | |
191 | caller with a socket. The driver must have already been bound | |
192 | to a socket with bind_device() -- in fact, bind_device() | |
193 | allocates the client structure that will be used. | |
194 | ||
195 | ======================================================================*/ | |
196 | ||
dc109497 | 197 | static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) |
e7a480d2 DB |
198 | { |
199 | struct pcmcia_driver *p_drv; | |
200 | struct pcmcia_device *p_dev; | |
201 | int ret = 0; | |
202 | unsigned long flags; | |
203 | ||
dc109497 | 204 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
205 | if (!s) |
206 | return -EINVAL; | |
207 | ||
dc109497 | 208 | ds_dbg(2, "bind_request(%d, '%s')\n", s->sock, |
e7a480d2 DB |
209 | (char *)bind_info->dev_info); |
210 | ||
211 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
212 | if (!p_drv) { | |
213 | ret = -EINVAL; | |
214 | goto err_put; | |
215 | } | |
216 | ||
217 | if (!try_module_get(p_drv->owner)) { | |
218 | ret = -EINVAL; | |
219 | goto err_put_driver; | |
220 | } | |
221 | ||
222 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
223 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
224 | if (p_dev->func == bind_info->function) { | |
225 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
226 | if (p_dev->cardmgr) { | |
227 | /* if there's already a device | |
228 | * registered, and it was registered | |
229 | * by userspace before, we need to | |
230 | * return the "instance". */ | |
231 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
fd238232 | 232 | bind_info->instance = p_dev; |
e7a480d2 DB |
233 | ret = -EBUSY; |
234 | goto err_put_module; | |
235 | } else { | |
236 | /* the correct driver managed to bind | |
237 | * itself magically to the correct | |
238 | * device. */ | |
239 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
240 | p_dev->cardmgr = p_drv; | |
241 | ret = 0; | |
242 | goto err_put_module; | |
243 | } | |
244 | } else if (!p_dev->dev.driver) { | |
245 | /* there's already a device available where | |
246 | * no device has been bound to yet. So we don't | |
247 | * need to register a device! */ | |
248 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
249 | goto rescan; | |
250 | } | |
251 | } | |
252 | } | |
253 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
254 | ||
255 | p_dev = pcmcia_device_add(s, bind_info->function); | |
256 | if (!p_dev) { | |
257 | ret = -EIO; | |
258 | goto err_put_module; | |
259 | } | |
260 | ||
261 | rescan: | |
262 | p_dev->cardmgr = p_drv; | |
263 | ||
264 | /* if a driver is already running, we can abort */ | |
265 | if (p_dev->dev.driver) | |
266 | goto err_put_module; | |
267 | ||
268 | /* | |
269 | * Prevent this racing with a card insertion. | |
270 | */ | |
7fe908dd | 271 | mutex_lock(&s->skt_mutex); |
e7a480d2 | 272 | bus_rescan_devices(&pcmcia_bus_type); |
7fe908dd | 273 | mutex_unlock(&s->skt_mutex); |
e7a480d2 DB |
274 | |
275 | /* check whether the driver indeed matched. I don't care if this | |
276 | * is racy or not, because it can only happen on cardmgr access | |
277 | * paths... | |
278 | */ | |
279 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
280 | p_dev->cardmgr = NULL; | |
281 | ||
282 | err_put_module: | |
283 | module_put(p_drv->owner); | |
284 | err_put_driver: | |
285 | put_driver(&p_drv->drv); | |
286 | err_put: | |
dc109497 | 287 | pcmcia_put_socket(s); |
e7a480d2 DB |
288 | |
289 | return (ret); | |
290 | } /* bind_request */ | |
291 | ||
33519ddd DB |
292 | #ifdef CONFIG_CARDBUS |
293 | ||
294 | static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) | |
295 | { | |
296 | if (!s || !(s->state & SOCKET_CARDBUS)) | |
297 | return NULL; | |
e7a480d2 | 298 | |
33519ddd DB |
299 | return s->cb_dev->subordinate; |
300 | } | |
301 | #endif | |
e7a480d2 | 302 | |
dc109497 | 303 | static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) |
e7a480d2 DB |
304 | { |
305 | dev_node_t *node; | |
306 | struct pcmcia_device *p_dev; | |
307 | unsigned long flags; | |
308 | int ret = 0; | |
309 | ||
310 | #ifdef CONFIG_CARDBUS | |
311 | /* | |
312 | * Some unbelievably ugly code to associate the PCI cardbus | |
313 | * device and its driver with the PCMCIA "bind" information. | |
314 | */ | |
315 | { | |
316 | struct pci_bus *bus; | |
317 | ||
dc109497 | 318 | bus = pcmcia_lookup_bus(s); |
e7a480d2 DB |
319 | if (bus) { |
320 | struct list_head *list; | |
321 | struct pci_dev *dev = NULL; | |
322 | ||
323 | list = bus->devices.next; | |
324 | while (list != &bus->devices) { | |
325 | struct pci_dev *pdev = pci_dev_b(list); | |
326 | list = list->next; | |
327 | ||
328 | if (first) { | |
329 | dev = pdev; | |
330 | break; | |
331 | } | |
332 | ||
333 | /* Try to handle "next" here some way? */ | |
334 | } | |
335 | if (dev && dev->driver) { | |
336 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
337 | bind_info->major = 0; | |
338 | bind_info->minor = 0; | |
339 | bind_info->next = NULL; | |
340 | return 0; | |
341 | } | |
342 | } | |
343 | } | |
344 | #endif | |
345 | ||
346 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
347 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
348 | if (p_dev->func == bind_info->function) { | |
349 | p_dev = pcmcia_get_dev(p_dev); | |
350 | if (!p_dev) | |
351 | continue; | |
352 | goto found; | |
353 | } | |
354 | } | |
355 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
356 | return -ENODEV; | |
357 | ||
358 | found: | |
359 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
360 | ||
fd238232 | 361 | if (p_dev->state & DEV_CONFIG_PENDING) { |
e7a480d2 DB |
362 | ret = -EAGAIN; |
363 | goto err_put; | |
364 | } | |
365 | ||
366 | if (first) | |
fd238232 | 367 | node = p_dev->dev_node; |
e7a480d2 | 368 | else |
fd238232 | 369 | for (node = p_dev->dev_node; node; node = node->next) |
e7a480d2 DB |
370 | if (node == bind_info->next) |
371 | break; | |
372 | if (!node) { | |
373 | ret = -ENODEV; | |
374 | goto err_put; | |
375 | } | |
376 | ||
377 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
378 | bind_info->major = node->major; | |
379 | bind_info->minor = node->minor; | |
380 | bind_info->next = node->next; | |
381 | ||
382 | err_put: | |
383 | pcmcia_put_dev(p_dev); | |
384 | return (ret); | |
385 | } /* get_device_info */ | |
386 | ||
387 | ||
388 | static int ds_open(struct inode *inode, struct file *file) | |
389 | { | |
390 | socket_t i = iminor(inode); | |
dc109497 | 391 | struct pcmcia_socket *s; |
e7a480d2 | 392 | user_info_t *user; |
c352ec8a | 393 | static int warning_printed = 0; |
e7a480d2 DB |
394 | |
395 | ds_dbg(0, "ds_open(socket %d)\n", i); | |
396 | ||
dc109497 | 397 | s = pcmcia_get_socket_by_nr(i); |
e7a480d2 DB |
398 | if (!s) |
399 | return -ENODEV; | |
dc109497 | 400 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
401 | if (!s) |
402 | return -ENODEV; | |
403 | ||
404 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 405 | if (s->pcmcia_state.busy) { |
dc109497 | 406 | pcmcia_put_socket(s); |
e7a480d2 DB |
407 | return -EBUSY; |
408 | } | |
409 | else | |
b5e43913 | 410 | s->pcmcia_state.busy = 1; |
e7a480d2 DB |
411 | } |
412 | ||
413 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
414 | if (!user) { | |
dc109497 | 415 | pcmcia_put_socket(s); |
e7a480d2 DB |
416 | return -ENOMEM; |
417 | } | |
418 | user->event_tail = user->event_head = 0; | |
419 | user->next = s->user; | |
420 | user->user_magic = USER_MAGIC; | |
421 | user->socket = s; | |
422 | s->user = user; | |
423 | file->private_data = user; | |
424 | ||
c352ec8a DB |
425 | if (!warning_printed) { |
426 | printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " | |
427 | "usage.\n"); | |
428 | printk(KERN_INFO "pcmcia: This interface will soon be removed from " | |
429 | "the kernel; please expect breakage unless you upgrade " | |
430 | "to new tools.\n"); | |
431 | printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" | |
432 | "utils/kernel/pcmcia/pcmcia.html for details.\n"); | |
433 | warning_printed = 1; | |
434 | } | |
435 | ||
b5e43913 | 436 | if (s->pcmcia_state.present) |
e7a480d2 DB |
437 | queue_event(user, CS_EVENT_CARD_INSERTION); |
438 | return 0; | |
439 | } /* ds_open */ | |
440 | ||
441 | /*====================================================================*/ | |
442 | ||
443 | static int ds_release(struct inode *inode, struct file *file) | |
444 | { | |
dc109497 | 445 | struct pcmcia_socket *s; |
e7a480d2 DB |
446 | user_info_t *user, **link; |
447 | ||
448 | ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); | |
449 | ||
450 | user = file->private_data; | |
451 | if (CHECK_USER(user)) | |
452 | goto out; | |
453 | ||
454 | s = user->socket; | |
455 | ||
456 | /* Unlink user data structure */ | |
457 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 458 | s->pcmcia_state.busy = 0; |
e7a480d2 DB |
459 | } |
460 | file->private_data = NULL; | |
461 | for (link = &s->user; *link; link = &(*link)->next) | |
462 | if (*link == user) break; | |
463 | if (link == NULL) | |
464 | goto out; | |
465 | *link = user->next; | |
466 | user->user_magic = 0; | |
467 | kfree(user); | |
dc109497 | 468 | pcmcia_put_socket(s); |
e7a480d2 DB |
469 | out: |
470 | return 0; | |
471 | } /* ds_release */ | |
472 | ||
473 | /*====================================================================*/ | |
474 | ||
475 | static ssize_t ds_read(struct file *file, char __user *buf, | |
476 | size_t count, loff_t *ppos) | |
477 | { | |
dc109497 | 478 | struct pcmcia_socket *s; |
e7a480d2 DB |
479 | user_info_t *user; |
480 | int ret; | |
481 | ||
482 | ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
483 | ||
484 | if (count < 4) | |
485 | return -EINVAL; | |
486 | ||
487 | user = file->private_data; | |
488 | if (CHECK_USER(user)) | |
489 | return -EIO; | |
490 | ||
491 | s = user->socket; | |
b5e43913 | 492 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
493 | return -EIO; |
494 | ||
495 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); | |
496 | if (ret == 0) | |
497 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
498 | ||
499 | return ret; | |
500 | } /* ds_read */ | |
501 | ||
502 | /*====================================================================*/ | |
503 | ||
504 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
505 | size_t count, loff_t *ppos) | |
506 | { | |
507 | ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
508 | ||
509 | if (count != 4) | |
510 | return -EINVAL; | |
511 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
512 | return -EBADF; | |
513 | ||
514 | return -EIO; | |
515 | } /* ds_write */ | |
516 | ||
517 | /*====================================================================*/ | |
518 | ||
519 | /* No kernel lock - fine */ | |
520 | static u_int ds_poll(struct file *file, poll_table *wait) | |
521 | { | |
dc109497 | 522 | struct pcmcia_socket *s; |
e7a480d2 DB |
523 | user_info_t *user; |
524 | ||
525 | ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
526 | ||
527 | user = file->private_data; | |
528 | if (CHECK_USER(user)) | |
529 | return POLLERR; | |
530 | s = user->socket; | |
531 | /* | |
532 | * We don't check for a dead socket here since that | |
533 | * will send cardmgr into an endless spin. | |
534 | */ | |
535 | poll_wait(file, &s->queue, wait); | |
536 | if (!queue_empty(user)) | |
537 | return POLLIN | POLLRDNORM; | |
538 | return 0; | |
539 | } /* ds_poll */ | |
540 | ||
541 | /*====================================================================*/ | |
542 | ||
543 | extern int pcmcia_adjust_resource_info(adjust_t *adj); | |
544 | ||
545 | static int ds_ioctl(struct inode * inode, struct file * file, | |
546 | u_int cmd, u_long arg) | |
547 | { | |
dc109497 | 548 | struct pcmcia_socket *s; |
e7a480d2 DB |
549 | void __user *uarg = (char __user *)arg; |
550 | u_int size; | |
551 | int ret, err; | |
552 | ds_ioctl_arg_t *buf; | |
553 | user_info_t *user; | |
554 | ||
555 | ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); | |
556 | ||
557 | user = file->private_data; | |
558 | if (CHECK_USER(user)) | |
559 | return -EIO; | |
560 | ||
561 | s = user->socket; | |
b5e43913 | 562 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
563 | return -EIO; |
564 | ||
565 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
566 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; | |
567 | ||
568 | /* Permission check */ | |
569 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
570 | return -EPERM; | |
571 | ||
572 | if (cmd & IOC_IN) { | |
573 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
574 | ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); | |
575 | return -EFAULT; | |
576 | } | |
577 | } | |
578 | if (cmd & IOC_OUT) { | |
579 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
580 | ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); | |
581 | return -EFAULT; | |
582 | } | |
583 | } | |
584 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
585 | if (!buf) | |
586 | return -ENOMEM; | |
587 | ||
588 | err = ret = 0; | |
589 | ||
590 | if (cmd & IOC_IN) __copy_from_user((char *)buf, uarg, size); | |
591 | ||
592 | switch (cmd) { | |
593 | case DS_ADJUST_RESOURCE_INFO: | |
594 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
595 | break; | |
e7a480d2 DB |
596 | case DS_GET_CONFIGURATION_INFO: |
597 | if (buf->config.Function && | |
dc109497 | 598 | (buf->config.Function >= s->functions)) |
e7a480d2 | 599 | ret = CS_BAD_ARGS; |
855cdf13 DB |
600 | else { |
601 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); | |
602 | ret = pccard_get_configuration_info(s, p_dev, &buf->config); | |
603 | pcmcia_put_dev(p_dev); | |
604 | } | |
e7a480d2 DB |
605 | break; |
606 | case DS_GET_FIRST_TUPLE: | |
7fe908dd | 607 | mutex_lock(&s->skt_mutex); |
dc109497 | 608 | pcmcia_validate_mem(s); |
7fe908dd | 609 | mutex_unlock(&s->skt_mutex); |
dc109497 | 610 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
611 | break; |
612 | case DS_GET_NEXT_TUPLE: | |
dc109497 | 613 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
614 | break; |
615 | case DS_GET_TUPLE_DATA: | |
616 | buf->tuple.TupleData = buf->tuple_parse.data; | |
617 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
dc109497 | 618 | ret = pccard_get_tuple_data(s, &buf->tuple); |
e7a480d2 DB |
619 | break; |
620 | case DS_PARSE_TUPLE: | |
621 | buf->tuple.TupleData = buf->tuple_parse.data; | |
622 | ret = pccard_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); | |
623 | break; | |
624 | case DS_RESET_CARD: | |
dc109497 | 625 | ret = pccard_reset_card(s); |
e7a480d2 DB |
626 | break; |
627 | case DS_GET_STATUS: | |
855cdf13 DB |
628 | if (buf->status.Function && |
629 | (buf->status.Function >= s->functions)) | |
630 | ret = CS_BAD_ARGS; | |
631 | else { | |
632 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); | |
633 | ret = pccard_get_status(s, p_dev, &buf->status); | |
634 | pcmcia_put_dev(p_dev); | |
635 | } | |
636 | break; | |
e7a480d2 | 637 | case DS_VALIDATE_CIS: |
7fe908dd | 638 | mutex_lock(&s->skt_mutex); |
dc109497 | 639 | pcmcia_validate_mem(s); |
7fe908dd | 640 | mutex_unlock(&s->skt_mutex); |
dc109497 | 641 | ret = pccard_validate_cis(s, BIND_FN_ALL, &buf->cisinfo); |
e7a480d2 DB |
642 | break; |
643 | case DS_SUSPEND_CARD: | |
dc109497 | 644 | ret = pcmcia_suspend_card(s); |
e7a480d2 DB |
645 | break; |
646 | case DS_RESUME_CARD: | |
dc109497 | 647 | ret = pcmcia_resume_card(s); |
e7a480d2 DB |
648 | break; |
649 | case DS_EJECT_CARD: | |
dc109497 | 650 | err = pcmcia_eject_card(s); |
e7a480d2 DB |
651 | break; |
652 | case DS_INSERT_CARD: | |
dc109497 | 653 | err = pcmcia_insert_card(s); |
e7a480d2 DB |
654 | break; |
655 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
656 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
657 | err = -EPERM; | |
658 | goto free_out; | |
659 | } | |
855cdf13 DB |
660 | |
661 | ret = CS_BAD_ARGS; | |
662 | ||
663 | if (!(buf->conf_reg.Function && | |
664 | (buf->conf_reg.Function >= s->functions))) { | |
665 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); | |
666 | if (p_dev) | |
667 | ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); | |
668 | pcmcia_put_dev(p_dev); | |
669 | } | |
e7a480d2 DB |
670 | break; |
671 | case DS_GET_FIRST_REGION: | |
672 | case DS_GET_NEXT_REGION: | |
673 | case DS_BIND_MTD: | |
674 | if (!capable(CAP_SYS_ADMIN)) { | |
675 | err = -EPERM; | |
676 | goto free_out; | |
677 | } else { | |
678 | static int printed = 0; | |
679 | if (!printed) { | |
680 | printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
681 | printk(KERN_WARNING "MTD handling any more.\n"); | |
682 | printed++; | |
683 | } | |
684 | } | |
685 | err = -EINVAL; | |
686 | goto free_out; | |
687 | break; | |
688 | case DS_GET_FIRST_WINDOW: | |
dc109497 | 689 | ret = pcmcia_get_window(s, &buf->win_info.handle, 0, |
e7a480d2 DB |
690 | &buf->win_info.window); |
691 | break; | |
692 | case DS_GET_NEXT_WINDOW: | |
dc109497 | 693 | ret = pcmcia_get_window(s, &buf->win_info.handle, |
e7a480d2 DB |
694 | buf->win_info.handle->index + 1, &buf->win_info.window); |
695 | break; | |
696 | case DS_GET_MEM_PAGE: | |
697 | ret = pcmcia_get_mem_page(buf->win_info.handle, | |
698 | &buf->win_info.map); | |
699 | break; | |
700 | case DS_REPLACE_CIS: | |
dc109497 | 701 | ret = pcmcia_replace_cis(s, &buf->cisdump); |
e7a480d2 DB |
702 | break; |
703 | case DS_BIND_REQUEST: | |
704 | if (!capable(CAP_SYS_ADMIN)) { | |
705 | err = -EPERM; | |
706 | goto free_out; | |
707 | } | |
708 | err = bind_request(s, &buf->bind_info); | |
709 | break; | |
710 | case DS_GET_DEVICE_INFO: | |
711 | err = get_device_info(s, &buf->bind_info, 1); | |
712 | break; | |
713 | case DS_GET_NEXT_DEVICE: | |
714 | err = get_device_info(s, &buf->bind_info, 0); | |
715 | break; | |
716 | case DS_UNBIND_REQUEST: | |
717 | err = 0; | |
718 | break; | |
719 | default: | |
720 | err = -EINVAL; | |
721 | } | |
722 | ||
723 | if ((err == 0) && (ret != CS_SUCCESS)) { | |
724 | ds_dbg(2, "ds_ioctl: ret = %d\n", ret); | |
725 | switch (ret) { | |
726 | case CS_BAD_SOCKET: case CS_NO_CARD: | |
727 | err = -ENODEV; break; | |
728 | case CS_BAD_ARGS: case CS_BAD_ATTRIBUTE: case CS_BAD_IRQ: | |
729 | case CS_BAD_TUPLE: | |
730 | err = -EINVAL; break; | |
731 | case CS_IN_USE: | |
732 | err = -EBUSY; break; | |
733 | case CS_OUT_OF_RESOURCE: | |
734 | err = -ENOSPC; break; | |
735 | case CS_NO_MORE_ITEMS: | |
736 | err = -ENODATA; break; | |
737 | case CS_UNSUPPORTED_FUNCTION: | |
738 | err = -ENOSYS; break; | |
739 | default: | |
740 | err = -EIO; break; | |
741 | } | |
742 | } | |
743 | ||
744 | if (cmd & IOC_OUT) { | |
745 | if (__copy_to_user(uarg, (char *)buf, size)) | |
746 | err = -EFAULT; | |
747 | } | |
748 | ||
749 | free_out: | |
750 | kfree(buf); | |
751 | return err; | |
752 | } /* ds_ioctl */ | |
753 | ||
754 | /*====================================================================*/ | |
755 | ||
756 | static struct file_operations ds_fops = { | |
757 | .owner = THIS_MODULE, | |
758 | .open = ds_open, | |
759 | .release = ds_release, | |
760 | .ioctl = ds_ioctl, | |
761 | .read = ds_read, | |
762 | .write = ds_write, | |
763 | .poll = ds_poll, | |
764 | }; | |
765 | ||
766 | void __init pcmcia_setup_ioctl(void) { | |
767 | int i; | |
768 | ||
769 | /* Set up character device for user mode clients */ | |
770 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
1a8ceafc | 771 | if (i < 0) |
e7a480d2 | 772 | printk(KERN_NOTICE "unable to find a free device # for " |
1a8ceafc | 773 | "Driver Services (error=%d)\n", i); |
e7a480d2 DB |
774 | else |
775 | major_dev = i; | |
776 | ||
777 | #ifdef CONFIG_PROC_FS | |
778 | proc_pccard = proc_mkdir("pccard", proc_bus); | |
779 | if (proc_pccard) | |
780 | create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL); | |
781 | #endif | |
782 | } | |
783 | ||
784 | ||
785 | void __exit pcmcia_cleanup_ioctl(void) { | |
786 | #ifdef CONFIG_PROC_FS | |
787 | if (proc_pccard) { | |
788 | remove_proc_entry("drivers", proc_pccard); | |
789 | remove_proc_entry("pccard", proc_bus); | |
790 | } | |
791 | #endif | |
792 | if (major_dev != -1) | |
793 | unregister_chrdev(major_dev, "pcmcia"); | |
794 | } |