Commit | Line | Data |
---|---|---|
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; | |
4deb7c1e | 131 | int rc; |
e7a480d2 | 132 | |
4deb7c1e JG |
133 | rc = bus_for_each_drv(&pcmcia_bus_type, NULL, |
134 | (void *) &p, proc_read_drivers_callback); | |
135 | if (rc < 0) | |
136 | return rc; | |
e7a480d2 DB |
137 | |
138 | return (p - buf); | |
139 | } | |
140 | #endif | |
141 | ||
142 | /*====================================================================== | |
143 | ||
144 | These manage a ring buffer of events pending for one user process | |
145 | ||
146 | ======================================================================*/ | |
147 | ||
148 | ||
149 | static int queue_empty(user_info_t *user) | |
150 | { | |
151 | return (user->event_head == user->event_tail); | |
152 | } | |
153 | ||
154 | static event_t get_queued_event(user_info_t *user) | |
155 | { | |
156 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
157 | return user->event[user->event_tail]; | |
158 | } | |
159 | ||
160 | static void queue_event(user_info_t *user, event_t event) | |
161 | { | |
162 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
163 | if (user->event_head == user->event_tail) | |
164 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
165 | user->event[user->event_head] = event; | |
166 | } | |
167 | ||
dc109497 | 168 | void handle_event(struct pcmcia_socket *s, event_t event) |
e7a480d2 DB |
169 | { |
170 | user_info_t *user; | |
171 | for (user = s->user; user; user = user->next) | |
172 | queue_event(user, event); | |
173 | wake_up_interruptible(&s->queue); | |
174 | } | |
175 | ||
176 | ||
177 | /*====================================================================== | |
178 | ||
179 | bind_request() and bind_device() are merged by now. Register_client() | |
180 | is called right at the end of bind_request(), during the driver's | |
181 | ->attach() call. Individual descriptions: | |
182 | ||
183 | bind_request() connects a socket to a particular client driver. | |
184 | It looks up the specified device ID in the list of registered | |
185 | drivers, binds it to the socket, and tries to create an instance | |
186 | of the device. unbind_request() deletes a driver instance. | |
187 | ||
188 | Bind_device() associates a device driver with a particular socket. | |
189 | It is normally called by Driver Services after it has identified | |
190 | a newly inserted card. An instance of that driver will then be | |
191 | eligible to register as a client of this socket. | |
192 | ||
193 | Register_client() uses the dev_info_t handle to match the | |
194 | caller with a socket. The driver must have already been bound | |
195 | to a socket with bind_device() -- in fact, bind_device() | |
196 | allocates the client structure that will be used. | |
197 | ||
198 | ======================================================================*/ | |
199 | ||
dc109497 | 200 | static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) |
e7a480d2 DB |
201 | { |
202 | struct pcmcia_driver *p_drv; | |
203 | struct pcmcia_device *p_dev; | |
204 | int ret = 0; | |
205 | unsigned long flags; | |
206 | ||
dc109497 | 207 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
208 | if (!s) |
209 | return -EINVAL; | |
210 | ||
dc109497 | 211 | ds_dbg(2, "bind_request(%d, '%s')\n", s->sock, |
e7a480d2 DB |
212 | (char *)bind_info->dev_info); |
213 | ||
214 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
215 | if (!p_drv) { | |
216 | ret = -EINVAL; | |
217 | goto err_put; | |
218 | } | |
219 | ||
220 | if (!try_module_get(p_drv->owner)) { | |
221 | ret = -EINVAL; | |
222 | goto err_put_driver; | |
223 | } | |
224 | ||
225 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
226 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
227 | if (p_dev->func == bind_info->function) { | |
228 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
229 | if (p_dev->cardmgr) { | |
230 | /* if there's already a device | |
231 | * registered, and it was registered | |
232 | * by userspace before, we need to | |
233 | * return the "instance". */ | |
234 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
fd238232 | 235 | bind_info->instance = p_dev; |
e7a480d2 DB |
236 | ret = -EBUSY; |
237 | goto err_put_module; | |
238 | } else { | |
239 | /* the correct driver managed to bind | |
240 | * itself magically to the correct | |
241 | * device. */ | |
242 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
243 | p_dev->cardmgr = p_drv; | |
244 | ret = 0; | |
245 | goto err_put_module; | |
246 | } | |
247 | } else if (!p_dev->dev.driver) { | |
248 | /* there's already a device available where | |
249 | * no device has been bound to yet. So we don't | |
250 | * need to register a device! */ | |
251 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
252 | goto rescan; | |
253 | } | |
254 | } | |
255 | } | |
256 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
257 | ||
258 | p_dev = pcmcia_device_add(s, bind_info->function); | |
259 | if (!p_dev) { | |
260 | ret = -EIO; | |
261 | goto err_put_module; | |
262 | } | |
263 | ||
264 | rescan: | |
265 | p_dev->cardmgr = p_drv; | |
266 | ||
267 | /* if a driver is already running, we can abort */ | |
268 | if (p_dev->dev.driver) | |
269 | goto err_put_module; | |
270 | ||
271 | /* | |
272 | * Prevent this racing with a card insertion. | |
273 | */ | |
7fe908dd | 274 | mutex_lock(&s->skt_mutex); |
4deb7c1e | 275 | ret = bus_rescan_devices(&pcmcia_bus_type); |
7fe908dd | 276 | mutex_unlock(&s->skt_mutex); |
4deb7c1e JG |
277 | if (ret) |
278 | goto err_put_module; | |
e7a480d2 DB |
279 | |
280 | /* check whether the driver indeed matched. I don't care if this | |
281 | * is racy or not, because it can only happen on cardmgr access | |
282 | * paths... | |
283 | */ | |
284 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
285 | p_dev->cardmgr = NULL; | |
286 | ||
287 | err_put_module: | |
288 | module_put(p_drv->owner); | |
289 | err_put_driver: | |
290 | put_driver(&p_drv->drv); | |
291 | err_put: | |
dc109497 | 292 | pcmcia_put_socket(s); |
e7a480d2 DB |
293 | |
294 | return (ret); | |
295 | } /* bind_request */ | |
296 | ||
33519ddd DB |
297 | #ifdef CONFIG_CARDBUS |
298 | ||
299 | static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) | |
300 | { | |
301 | if (!s || !(s->state & SOCKET_CARDBUS)) | |
302 | return NULL; | |
e7a480d2 | 303 | |
33519ddd DB |
304 | return s->cb_dev->subordinate; |
305 | } | |
306 | #endif | |
e7a480d2 | 307 | |
dc109497 | 308 | static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) |
e7a480d2 DB |
309 | { |
310 | dev_node_t *node; | |
311 | struct pcmcia_device *p_dev; | |
e2d40963 | 312 | struct pcmcia_driver *p_drv; |
e7a480d2 DB |
313 | unsigned long flags; |
314 | int ret = 0; | |
315 | ||
316 | #ifdef CONFIG_CARDBUS | |
317 | /* | |
318 | * Some unbelievably ugly code to associate the PCI cardbus | |
319 | * device and its driver with the PCMCIA "bind" information. | |
320 | */ | |
321 | { | |
322 | struct pci_bus *bus; | |
323 | ||
dc109497 | 324 | bus = pcmcia_lookup_bus(s); |
e7a480d2 DB |
325 | if (bus) { |
326 | struct list_head *list; | |
327 | struct pci_dev *dev = NULL; | |
328 | ||
329 | list = bus->devices.next; | |
330 | while (list != &bus->devices) { | |
331 | struct pci_dev *pdev = pci_dev_b(list); | |
332 | list = list->next; | |
333 | ||
334 | if (first) { | |
335 | dev = pdev; | |
336 | break; | |
337 | } | |
338 | ||
339 | /* Try to handle "next" here some way? */ | |
340 | } | |
341 | if (dev && dev->driver) { | |
342 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
343 | bind_info->major = 0; | |
344 | bind_info->minor = 0; | |
345 | bind_info->next = NULL; | |
346 | return 0; | |
347 | } | |
348 | } | |
349 | } | |
350 | #endif | |
351 | ||
352 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
353 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
354 | if (p_dev->func == bind_info->function) { | |
355 | p_dev = pcmcia_get_dev(p_dev); | |
356 | if (!p_dev) | |
357 | continue; | |
358 | goto found; | |
359 | } | |
360 | } | |
361 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
362 | return -ENODEV; | |
363 | ||
364 | found: | |
365 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
366 | ||
e2d40963 DB |
367 | p_drv = to_pcmcia_drv(p_dev->dev.driver); |
368 | if (p_drv && !p_dev->_locked) { | |
e7a480d2 DB |
369 | ret = -EAGAIN; |
370 | goto err_put; | |
371 | } | |
372 | ||
373 | if (first) | |
fd238232 | 374 | node = p_dev->dev_node; |
e7a480d2 | 375 | else |
fd238232 | 376 | for (node = p_dev->dev_node; node; node = node->next) |
e7a480d2 DB |
377 | if (node == bind_info->next) |
378 | break; | |
379 | if (!node) { | |
380 | ret = -ENODEV; | |
381 | goto err_put; | |
382 | } | |
383 | ||
384 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
385 | bind_info->major = node->major; | |
386 | bind_info->minor = node->minor; | |
387 | bind_info->next = node->next; | |
388 | ||
389 | err_put: | |
390 | pcmcia_put_dev(p_dev); | |
391 | return (ret); | |
392 | } /* get_device_info */ | |
393 | ||
394 | ||
395 | static int ds_open(struct inode *inode, struct file *file) | |
396 | { | |
397 | socket_t i = iminor(inode); | |
dc109497 | 398 | struct pcmcia_socket *s; |
e7a480d2 | 399 | user_info_t *user; |
c352ec8a | 400 | static int warning_printed = 0; |
e7a480d2 DB |
401 | |
402 | ds_dbg(0, "ds_open(socket %d)\n", i); | |
403 | ||
dc109497 | 404 | s = pcmcia_get_socket_by_nr(i); |
e7a480d2 DB |
405 | if (!s) |
406 | return -ENODEV; | |
dc109497 | 407 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
408 | if (!s) |
409 | return -ENODEV; | |
410 | ||
411 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 412 | if (s->pcmcia_state.busy) { |
dc109497 | 413 | pcmcia_put_socket(s); |
e7a480d2 DB |
414 | return -EBUSY; |
415 | } | |
416 | else | |
b5e43913 | 417 | s->pcmcia_state.busy = 1; |
e7a480d2 DB |
418 | } |
419 | ||
420 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
421 | if (!user) { | |
dc109497 | 422 | pcmcia_put_socket(s); |
e7a480d2 DB |
423 | return -ENOMEM; |
424 | } | |
425 | user->event_tail = user->event_head = 0; | |
426 | user->next = s->user; | |
427 | user->user_magic = USER_MAGIC; | |
428 | user->socket = s; | |
429 | s->user = user; | |
430 | file->private_data = user; | |
431 | ||
c352ec8a DB |
432 | if (!warning_printed) { |
433 | printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " | |
73d58588 | 434 | "usage from process: %s.\n", current->comm); |
c352ec8a DB |
435 | printk(KERN_INFO "pcmcia: This interface will soon be removed from " |
436 | "the kernel; please expect breakage unless you upgrade " | |
437 | "to new tools.\n"); | |
438 | printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" | |
439 | "utils/kernel/pcmcia/pcmcia.html for details.\n"); | |
440 | warning_printed = 1; | |
441 | } | |
442 | ||
b5e43913 | 443 | if (s->pcmcia_state.present) |
e7a480d2 DB |
444 | queue_event(user, CS_EVENT_CARD_INSERTION); |
445 | return 0; | |
446 | } /* ds_open */ | |
447 | ||
448 | /*====================================================================*/ | |
449 | ||
450 | static int ds_release(struct inode *inode, struct file *file) | |
451 | { | |
dc109497 | 452 | struct pcmcia_socket *s; |
e7a480d2 DB |
453 | user_info_t *user, **link; |
454 | ||
455 | ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); | |
456 | ||
457 | user = file->private_data; | |
458 | if (CHECK_USER(user)) | |
459 | goto out; | |
460 | ||
461 | s = user->socket; | |
462 | ||
463 | /* Unlink user data structure */ | |
464 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 465 | s->pcmcia_state.busy = 0; |
e7a480d2 DB |
466 | } |
467 | file->private_data = NULL; | |
468 | for (link = &s->user; *link; link = &(*link)->next) | |
469 | if (*link == user) break; | |
470 | if (link == NULL) | |
471 | goto out; | |
472 | *link = user->next; | |
473 | user->user_magic = 0; | |
474 | kfree(user); | |
dc109497 | 475 | pcmcia_put_socket(s); |
e7a480d2 DB |
476 | out: |
477 | return 0; | |
478 | } /* ds_release */ | |
479 | ||
480 | /*====================================================================*/ | |
481 | ||
482 | static ssize_t ds_read(struct file *file, char __user *buf, | |
483 | size_t count, loff_t *ppos) | |
484 | { | |
dc109497 | 485 | struct pcmcia_socket *s; |
e7a480d2 DB |
486 | user_info_t *user; |
487 | int ret; | |
488 | ||
489 | ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
490 | ||
491 | if (count < 4) | |
492 | return -EINVAL; | |
493 | ||
494 | user = file->private_data; | |
495 | if (CHECK_USER(user)) | |
496 | return -EIO; | |
497 | ||
498 | s = user->socket; | |
b5e43913 | 499 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
500 | return -EIO; |
501 | ||
502 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); | |
503 | if (ret == 0) | |
504 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
505 | ||
506 | return ret; | |
507 | } /* ds_read */ | |
508 | ||
509 | /*====================================================================*/ | |
510 | ||
511 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
512 | size_t count, loff_t *ppos) | |
513 | { | |
514 | ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
515 | ||
516 | if (count != 4) | |
517 | return -EINVAL; | |
518 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
519 | return -EBADF; | |
520 | ||
521 | return -EIO; | |
522 | } /* ds_write */ | |
523 | ||
524 | /*====================================================================*/ | |
525 | ||
526 | /* No kernel lock - fine */ | |
527 | static u_int ds_poll(struct file *file, poll_table *wait) | |
528 | { | |
dc109497 | 529 | struct pcmcia_socket *s; |
e7a480d2 DB |
530 | user_info_t *user; |
531 | ||
532 | ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
533 | ||
534 | user = file->private_data; | |
535 | if (CHECK_USER(user)) | |
536 | return POLLERR; | |
537 | s = user->socket; | |
538 | /* | |
539 | * We don't check for a dead socket here since that | |
540 | * will send cardmgr into an endless spin. | |
541 | */ | |
542 | poll_wait(file, &s->queue, wait); | |
543 | if (!queue_empty(user)) | |
544 | return POLLIN | POLLRDNORM; | |
545 | return 0; | |
546 | } /* ds_poll */ | |
547 | ||
548 | /*====================================================================*/ | |
549 | ||
550 | extern int pcmcia_adjust_resource_info(adjust_t *adj); | |
551 | ||
552 | static int ds_ioctl(struct inode * inode, struct file * file, | |
553 | u_int cmd, u_long arg) | |
554 | { | |
dc109497 | 555 | struct pcmcia_socket *s; |
e7a480d2 DB |
556 | void __user *uarg = (char __user *)arg; |
557 | u_int size; | |
558 | int ret, err; | |
559 | ds_ioctl_arg_t *buf; | |
560 | user_info_t *user; | |
561 | ||
562 | ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); | |
563 | ||
564 | user = file->private_data; | |
565 | if (CHECK_USER(user)) | |
566 | return -EIO; | |
567 | ||
568 | s = user->socket; | |
b5e43913 | 569 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
570 | return -EIO; |
571 | ||
572 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
573 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; | |
574 | ||
575 | /* Permission check */ | |
576 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
577 | return -EPERM; | |
578 | ||
579 | if (cmd & IOC_IN) { | |
580 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
581 | ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); | |
582 | return -EFAULT; | |
583 | } | |
584 | } | |
585 | if (cmd & IOC_OUT) { | |
586 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
587 | ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); | |
588 | return -EFAULT; | |
589 | } | |
590 | } | |
591 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
592 | if (!buf) | |
593 | return -ENOMEM; | |
594 | ||
595 | err = ret = 0; | |
596 | ||
597 | if (cmd & IOC_IN) __copy_from_user((char *)buf, uarg, size); | |
598 | ||
599 | switch (cmd) { | |
600 | case DS_ADJUST_RESOURCE_INFO: | |
601 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
602 | break; | |
e7a480d2 DB |
603 | case DS_GET_CONFIGURATION_INFO: |
604 | if (buf->config.Function && | |
dc109497 | 605 | (buf->config.Function >= s->functions)) |
e7a480d2 | 606 | ret = CS_BAD_ARGS; |
855cdf13 DB |
607 | else { |
608 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); | |
f47ad214 DR |
609 | ret = pccard_get_configuration_info(s, p_dev, &buf->config); |
610 | pcmcia_put_dev(p_dev); | |
855cdf13 | 611 | } |
e7a480d2 DB |
612 | break; |
613 | case DS_GET_FIRST_TUPLE: | |
7fe908dd | 614 | mutex_lock(&s->skt_mutex); |
dc109497 | 615 | pcmcia_validate_mem(s); |
7fe908dd | 616 | mutex_unlock(&s->skt_mutex); |
dc109497 | 617 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
618 | break; |
619 | case DS_GET_NEXT_TUPLE: | |
dc109497 | 620 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
621 | break; |
622 | case DS_GET_TUPLE_DATA: | |
623 | buf->tuple.TupleData = buf->tuple_parse.data; | |
624 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
dc109497 | 625 | ret = pccard_get_tuple_data(s, &buf->tuple); |
e7a480d2 DB |
626 | break; |
627 | case DS_PARSE_TUPLE: | |
628 | buf->tuple.TupleData = buf->tuple_parse.data; | |
629 | ret = pccard_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); | |
630 | break; | |
631 | case DS_RESET_CARD: | |
dc109497 | 632 | ret = pccard_reset_card(s); |
e7a480d2 DB |
633 | break; |
634 | case DS_GET_STATUS: | |
855cdf13 DB |
635 | if (buf->status.Function && |
636 | (buf->status.Function >= s->functions)) | |
637 | ret = CS_BAD_ARGS; | |
638 | else { | |
639 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); | |
f47ad214 DR |
640 | ret = pccard_get_status(s, p_dev, &buf->status); |
641 | pcmcia_put_dev(p_dev); | |
855cdf13 DB |
642 | } |
643 | break; | |
e7a480d2 | 644 | case DS_VALIDATE_CIS: |
7fe908dd | 645 | mutex_lock(&s->skt_mutex); |
dc109497 | 646 | pcmcia_validate_mem(s); |
7fe908dd | 647 | mutex_unlock(&s->skt_mutex); |
dc109497 | 648 | ret = pccard_validate_cis(s, BIND_FN_ALL, &buf->cisinfo); |
e7a480d2 DB |
649 | break; |
650 | case DS_SUSPEND_CARD: | |
dc109497 | 651 | ret = pcmcia_suspend_card(s); |
e7a480d2 DB |
652 | break; |
653 | case DS_RESUME_CARD: | |
dc109497 | 654 | ret = pcmcia_resume_card(s); |
e7a480d2 DB |
655 | break; |
656 | case DS_EJECT_CARD: | |
dc109497 | 657 | err = pcmcia_eject_card(s); |
e7a480d2 DB |
658 | break; |
659 | case DS_INSERT_CARD: | |
dc109497 | 660 | err = pcmcia_insert_card(s); |
e7a480d2 DB |
661 | break; |
662 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
663 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
664 | err = -EPERM; | |
665 | goto free_out; | |
666 | } | |
855cdf13 DB |
667 | |
668 | ret = CS_BAD_ARGS; | |
669 | ||
670 | if (!(buf->conf_reg.Function && | |
671 | (buf->conf_reg.Function >= s->functions))) { | |
672 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); | |
73d58588 | 673 | if (p_dev) { |
855cdf13 | 674 | ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); |
73d58588 BH |
675 | pcmcia_put_dev(p_dev); |
676 | } | |
855cdf13 | 677 | } |
e7a480d2 DB |
678 | break; |
679 | case DS_GET_FIRST_REGION: | |
680 | case DS_GET_NEXT_REGION: | |
681 | case DS_BIND_MTD: | |
682 | if (!capable(CAP_SYS_ADMIN)) { | |
683 | err = -EPERM; | |
684 | goto free_out; | |
685 | } else { | |
686 | static int printed = 0; | |
687 | if (!printed) { | |
688 | printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
689 | printk(KERN_WARNING "MTD handling any more.\n"); | |
690 | printed++; | |
691 | } | |
692 | } | |
693 | err = -EINVAL; | |
694 | goto free_out; | |
695 | break; | |
696 | case DS_GET_FIRST_WINDOW: | |
dc109497 | 697 | ret = pcmcia_get_window(s, &buf->win_info.handle, 0, |
e7a480d2 DB |
698 | &buf->win_info.window); |
699 | break; | |
700 | case DS_GET_NEXT_WINDOW: | |
dc109497 | 701 | ret = pcmcia_get_window(s, &buf->win_info.handle, |
e7a480d2 DB |
702 | buf->win_info.handle->index + 1, &buf->win_info.window); |
703 | break; | |
704 | case DS_GET_MEM_PAGE: | |
705 | ret = pcmcia_get_mem_page(buf->win_info.handle, | |
706 | &buf->win_info.map); | |
707 | break; | |
708 | case DS_REPLACE_CIS: | |
dc109497 | 709 | ret = pcmcia_replace_cis(s, &buf->cisdump); |
e7a480d2 DB |
710 | break; |
711 | case DS_BIND_REQUEST: | |
712 | if (!capable(CAP_SYS_ADMIN)) { | |
713 | err = -EPERM; | |
714 | goto free_out; | |
715 | } | |
716 | err = bind_request(s, &buf->bind_info); | |
717 | break; | |
718 | case DS_GET_DEVICE_INFO: | |
719 | err = get_device_info(s, &buf->bind_info, 1); | |
720 | break; | |
721 | case DS_GET_NEXT_DEVICE: | |
722 | err = get_device_info(s, &buf->bind_info, 0); | |
723 | break; | |
724 | case DS_UNBIND_REQUEST: | |
725 | err = 0; | |
726 | break; | |
727 | default: | |
728 | err = -EINVAL; | |
729 | } | |
730 | ||
731 | if ((err == 0) && (ret != CS_SUCCESS)) { | |
732 | ds_dbg(2, "ds_ioctl: ret = %d\n", ret); | |
733 | switch (ret) { | |
734 | case CS_BAD_SOCKET: case CS_NO_CARD: | |
735 | err = -ENODEV; break; | |
736 | case CS_BAD_ARGS: case CS_BAD_ATTRIBUTE: case CS_BAD_IRQ: | |
737 | case CS_BAD_TUPLE: | |
738 | err = -EINVAL; break; | |
739 | case CS_IN_USE: | |
740 | err = -EBUSY; break; | |
741 | case CS_OUT_OF_RESOURCE: | |
742 | err = -ENOSPC; break; | |
743 | case CS_NO_MORE_ITEMS: | |
744 | err = -ENODATA; break; | |
745 | case CS_UNSUPPORTED_FUNCTION: | |
746 | err = -ENOSYS; break; | |
747 | default: | |
748 | err = -EIO; break; | |
749 | } | |
750 | } | |
751 | ||
752 | if (cmd & IOC_OUT) { | |
753 | if (__copy_to_user(uarg, (char *)buf, size)) | |
754 | err = -EFAULT; | |
755 | } | |
756 | ||
757 | free_out: | |
758 | kfree(buf); | |
759 | return err; | |
760 | } /* ds_ioctl */ | |
761 | ||
762 | /*====================================================================*/ | |
763 | ||
764 | static struct file_operations ds_fops = { | |
765 | .owner = THIS_MODULE, | |
766 | .open = ds_open, | |
767 | .release = ds_release, | |
768 | .ioctl = ds_ioctl, | |
769 | .read = ds_read, | |
770 | .write = ds_write, | |
771 | .poll = ds_poll, | |
772 | }; | |
773 | ||
774 | void __init pcmcia_setup_ioctl(void) { | |
775 | int i; | |
776 | ||
777 | /* Set up character device for user mode clients */ | |
778 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
1a8ceafc | 779 | if (i < 0) |
e7a480d2 | 780 | printk(KERN_NOTICE "unable to find a free device # for " |
1a8ceafc | 781 | "Driver Services (error=%d)\n", i); |
e7a480d2 DB |
782 | else |
783 | major_dev = i; | |
784 | ||
785 | #ifdef CONFIG_PROC_FS | |
786 | proc_pccard = proc_mkdir("pccard", proc_bus); | |
787 | if (proc_pccard) | |
788 | create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL); | |
789 | #endif | |
790 | } | |
791 | ||
792 | ||
793 | void __exit pcmcia_cleanup_ioctl(void) { | |
794 | #ifdef CONFIG_PROC_FS | |
795 | if (proc_pccard) { | |
796 | remove_proc_entry("drivers", proc_pccard); | |
797 | remove_proc_entry("pccard", proc_bus); | |
798 | } | |
799 | #endif | |
800 | if (major_dev != -1) | |
801 | unregister_chrdev(major_dev, "pcmcia"); | |
802 | } |