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; | |
e7a480d2 DB |
62 | |
63 | #define ds_dbg(lvl, fmt, arg...) do { \ | |
64 | if (ds_pc_debug >= lvl) \ | |
65 | printk(KERN_DEBUG "ds: " fmt , ## arg); \ | |
66 | } while (0) | |
67 | #else | |
68 | #define ds_dbg(lvl, fmt, arg...) do { } while (0) | |
69 | #endif | |
70 | ||
855cdf13 DB |
71 | static struct pcmcia_device *get_pcmcia_device(struct pcmcia_socket *s, |
72 | unsigned int function) | |
73 | { | |
74 | struct pcmcia_device *p_dev = NULL; | |
75 | unsigned long flags; | |
76 | ||
77 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
78 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
79 | if (p_dev->func == function) { | |
80 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
81 | return pcmcia_get_dev(p_dev); | |
82 | } | |
83 | } | |
84 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
85 | return NULL; | |
86 | } | |
e7a480d2 | 87 | |
e7a480d2 DB |
88 | /* backwards-compatible accessing of driver --- by name! */ |
89 | ||
855cdf13 | 90 | static struct pcmcia_driver *get_pcmcia_driver(dev_info_t *dev_info) |
e7a480d2 DB |
91 | { |
92 | struct device_driver *drv; | |
93 | struct pcmcia_driver *p_drv; | |
94 | ||
95 | drv = driver_find((char *) dev_info, &pcmcia_bus_type); | |
96 | if (!drv) | |
97 | return NULL; | |
98 | ||
99 | p_drv = container_of(drv, struct pcmcia_driver, drv); | |
100 | ||
101 | return (p_drv); | |
102 | } | |
103 | ||
104 | ||
105 | #ifdef CONFIG_PROC_FS | |
106 | static struct proc_dir_entry *proc_pccard = NULL; | |
107 | ||
108 | static int proc_read_drivers_callback(struct device_driver *driver, void *d) | |
109 | { | |
110 | char **p = d; | |
111 | struct pcmcia_driver *p_drv = container_of(driver, | |
112 | struct pcmcia_driver, drv); | |
113 | ||
114 | *p += sprintf(*p, "%-24.24s 1 %d\n", p_drv->drv.name, | |
115 | #ifdef CONFIG_MODULE_UNLOAD | |
116 | (p_drv->owner) ? module_refcount(p_drv->owner) : 1 | |
117 | #else | |
118 | 1 | |
119 | #endif | |
120 | ); | |
121 | d = (void *) p; | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
126 | static int proc_read_drivers(char *buf, char **start, off_t pos, | |
127 | int count, int *eof, void *data) | |
128 | { | |
129 | char *p = buf; | |
4deb7c1e | 130 | int rc; |
e7a480d2 | 131 | |
4deb7c1e JG |
132 | rc = bus_for_each_drv(&pcmcia_bus_type, NULL, |
133 | (void *) &p, proc_read_drivers_callback); | |
134 | if (rc < 0) | |
135 | return rc; | |
e7a480d2 DB |
136 | |
137 | return (p - buf); | |
138 | } | |
139 | #endif | |
140 | ||
141 | /*====================================================================== | |
142 | ||
143 | These manage a ring buffer of events pending for one user process | |
144 | ||
145 | ======================================================================*/ | |
146 | ||
147 | ||
148 | static int queue_empty(user_info_t *user) | |
149 | { | |
150 | return (user->event_head == user->event_tail); | |
151 | } | |
152 | ||
153 | static event_t get_queued_event(user_info_t *user) | |
154 | { | |
155 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
156 | return user->event[user->event_tail]; | |
157 | } | |
158 | ||
159 | static void queue_event(user_info_t *user, event_t event) | |
160 | { | |
161 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
162 | if (user->event_head == user->event_tail) | |
163 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
164 | user->event[user->event_head] = event; | |
165 | } | |
166 | ||
dc109497 | 167 | void handle_event(struct pcmcia_socket *s, event_t event) |
e7a480d2 DB |
168 | { |
169 | user_info_t *user; | |
170 | for (user = s->user; user; user = user->next) | |
171 | queue_event(user, event); | |
172 | wake_up_interruptible(&s->queue); | |
173 | } | |
174 | ||
175 | ||
176 | /*====================================================================== | |
177 | ||
178 | bind_request() and bind_device() are merged by now. Register_client() | |
179 | is called right at the end of bind_request(), during the driver's | |
180 | ->attach() call. Individual descriptions: | |
181 | ||
182 | bind_request() connects a socket to a particular client driver. | |
183 | It looks up the specified device ID in the list of registered | |
184 | drivers, binds it to the socket, and tries to create an instance | |
185 | of the device. unbind_request() deletes a driver instance. | |
186 | ||
187 | Bind_device() associates a device driver with a particular socket. | |
188 | It is normally called by Driver Services after it has identified | |
189 | a newly inserted card. An instance of that driver will then be | |
190 | eligible to register as a client of this socket. | |
191 | ||
192 | Register_client() uses the dev_info_t handle to match the | |
193 | caller with a socket. The driver must have already been bound | |
194 | to a socket with bind_device() -- in fact, bind_device() | |
195 | allocates the client structure that will be used. | |
196 | ||
197 | ======================================================================*/ | |
198 | ||
dc109497 | 199 | static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) |
e7a480d2 DB |
200 | { |
201 | struct pcmcia_driver *p_drv; | |
202 | struct pcmcia_device *p_dev; | |
203 | int ret = 0; | |
204 | unsigned long flags; | |
205 | ||
dc109497 | 206 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
207 | if (!s) |
208 | return -EINVAL; | |
209 | ||
dc109497 | 210 | ds_dbg(2, "bind_request(%d, '%s')\n", s->sock, |
e7a480d2 DB |
211 | (char *)bind_info->dev_info); |
212 | ||
213 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
214 | if (!p_drv) { | |
215 | ret = -EINVAL; | |
216 | goto err_put; | |
217 | } | |
218 | ||
219 | if (!try_module_get(p_drv->owner)) { | |
220 | ret = -EINVAL; | |
221 | goto err_put_driver; | |
222 | } | |
223 | ||
224 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
225 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
226 | if (p_dev->func == bind_info->function) { | |
227 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
228 | if (p_dev->cardmgr) { | |
229 | /* if there's already a device | |
230 | * registered, and it was registered | |
231 | * by userspace before, we need to | |
232 | * return the "instance". */ | |
233 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
fd238232 | 234 | bind_info->instance = p_dev; |
e7a480d2 DB |
235 | ret = -EBUSY; |
236 | goto err_put_module; | |
237 | } else { | |
238 | /* the correct driver managed to bind | |
239 | * itself magically to the correct | |
240 | * device. */ | |
241 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
242 | p_dev->cardmgr = p_drv; | |
243 | ret = 0; | |
244 | goto err_put_module; | |
245 | } | |
246 | } else if (!p_dev->dev.driver) { | |
247 | /* there's already a device available where | |
248 | * no device has been bound to yet. So we don't | |
249 | * need to register a device! */ | |
250 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
251 | goto rescan; | |
252 | } | |
253 | } | |
254 | } | |
255 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
256 | ||
257 | p_dev = pcmcia_device_add(s, bind_info->function); | |
258 | if (!p_dev) { | |
259 | ret = -EIO; | |
260 | goto err_put_module; | |
261 | } | |
262 | ||
263 | rescan: | |
264 | p_dev->cardmgr = p_drv; | |
265 | ||
266 | /* if a driver is already running, we can abort */ | |
267 | if (p_dev->dev.driver) | |
268 | goto err_put_module; | |
269 | ||
270 | /* | |
271 | * Prevent this racing with a card insertion. | |
272 | */ | |
7fe908dd | 273 | mutex_lock(&s->skt_mutex); |
4deb7c1e | 274 | ret = bus_rescan_devices(&pcmcia_bus_type); |
7fe908dd | 275 | mutex_unlock(&s->skt_mutex); |
4deb7c1e JG |
276 | if (ret) |
277 | goto err_put_module; | |
e7a480d2 DB |
278 | |
279 | /* check whether the driver indeed matched. I don't care if this | |
280 | * is racy or not, because it can only happen on cardmgr access | |
281 | * paths... | |
282 | */ | |
283 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
284 | p_dev->cardmgr = NULL; | |
285 | ||
286 | err_put_module: | |
287 | module_put(p_drv->owner); | |
288 | err_put_driver: | |
289 | put_driver(&p_drv->drv); | |
290 | err_put: | |
dc109497 | 291 | pcmcia_put_socket(s); |
e7a480d2 DB |
292 | |
293 | return (ret); | |
294 | } /* bind_request */ | |
295 | ||
33519ddd DB |
296 | #ifdef CONFIG_CARDBUS |
297 | ||
298 | static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) | |
299 | { | |
300 | if (!s || !(s->state & SOCKET_CARDBUS)) | |
301 | return NULL; | |
e7a480d2 | 302 | |
33519ddd DB |
303 | return s->cb_dev->subordinate; |
304 | } | |
305 | #endif | |
e7a480d2 | 306 | |
dc109497 | 307 | static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) |
e7a480d2 DB |
308 | { |
309 | dev_node_t *node; | |
310 | struct pcmcia_device *p_dev; | |
e2d40963 | 311 | struct pcmcia_driver *p_drv; |
e7a480d2 DB |
312 | unsigned long flags; |
313 | int ret = 0; | |
314 | ||
315 | #ifdef CONFIG_CARDBUS | |
316 | /* | |
317 | * Some unbelievably ugly code to associate the PCI cardbus | |
318 | * device and its driver with the PCMCIA "bind" information. | |
319 | */ | |
320 | { | |
321 | struct pci_bus *bus; | |
322 | ||
dc109497 | 323 | bus = pcmcia_lookup_bus(s); |
e7a480d2 DB |
324 | if (bus) { |
325 | struct list_head *list; | |
326 | struct pci_dev *dev = NULL; | |
327 | ||
328 | list = bus->devices.next; | |
329 | while (list != &bus->devices) { | |
330 | struct pci_dev *pdev = pci_dev_b(list); | |
331 | list = list->next; | |
332 | ||
333 | if (first) { | |
334 | dev = pdev; | |
335 | break; | |
336 | } | |
337 | ||
338 | /* Try to handle "next" here some way? */ | |
339 | } | |
340 | if (dev && dev->driver) { | |
341 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
342 | bind_info->major = 0; | |
343 | bind_info->minor = 0; | |
344 | bind_info->next = NULL; | |
345 | return 0; | |
346 | } | |
347 | } | |
348 | } | |
349 | #endif | |
350 | ||
351 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
352 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
353 | if (p_dev->func == bind_info->function) { | |
354 | p_dev = pcmcia_get_dev(p_dev); | |
355 | if (!p_dev) | |
356 | continue; | |
357 | goto found; | |
358 | } | |
359 | } | |
360 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
361 | return -ENODEV; | |
362 | ||
363 | found: | |
364 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
365 | ||
e2d40963 DB |
366 | p_drv = to_pcmcia_drv(p_dev->dev.driver); |
367 | if (p_drv && !p_dev->_locked) { | |
e7a480d2 DB |
368 | ret = -EAGAIN; |
369 | goto err_put; | |
370 | } | |
371 | ||
372 | if (first) | |
fd238232 | 373 | node = p_dev->dev_node; |
e7a480d2 | 374 | else |
fd238232 | 375 | for (node = p_dev->dev_node; node; node = node->next) |
e7a480d2 DB |
376 | if (node == bind_info->next) |
377 | break; | |
378 | if (!node) { | |
379 | ret = -ENODEV; | |
380 | goto err_put; | |
381 | } | |
382 | ||
383 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
384 | bind_info->major = node->major; | |
385 | bind_info->minor = node->minor; | |
386 | bind_info->next = node->next; | |
387 | ||
388 | err_put: | |
389 | pcmcia_put_dev(p_dev); | |
390 | return (ret); | |
391 | } /* get_device_info */ | |
392 | ||
393 | ||
394 | static int ds_open(struct inode *inode, struct file *file) | |
395 | { | |
396 | socket_t i = iminor(inode); | |
dc109497 | 397 | struct pcmcia_socket *s; |
e7a480d2 | 398 | user_info_t *user; |
c352ec8a | 399 | static int warning_printed = 0; |
e7a480d2 DB |
400 | |
401 | ds_dbg(0, "ds_open(socket %d)\n", i); | |
402 | ||
dc109497 | 403 | s = pcmcia_get_socket_by_nr(i); |
e7a480d2 DB |
404 | if (!s) |
405 | return -ENODEV; | |
dc109497 | 406 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
407 | if (!s) |
408 | return -ENODEV; | |
409 | ||
410 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 411 | if (s->pcmcia_state.busy) { |
dc109497 | 412 | pcmcia_put_socket(s); |
e7a480d2 DB |
413 | return -EBUSY; |
414 | } | |
415 | else | |
b5e43913 | 416 | s->pcmcia_state.busy = 1; |
e7a480d2 DB |
417 | } |
418 | ||
419 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
420 | if (!user) { | |
dc109497 | 421 | pcmcia_put_socket(s); |
e7a480d2 DB |
422 | return -ENOMEM; |
423 | } | |
424 | user->event_tail = user->event_head = 0; | |
425 | user->next = s->user; | |
426 | user->user_magic = USER_MAGIC; | |
427 | user->socket = s; | |
428 | s->user = user; | |
429 | file->private_data = user; | |
430 | ||
c352ec8a DB |
431 | if (!warning_printed) { |
432 | printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " | |
73d58588 | 433 | "usage from process: %s.\n", current->comm); |
c352ec8a DB |
434 | printk(KERN_INFO "pcmcia: This interface will soon be removed from " |
435 | "the kernel; please expect breakage unless you upgrade " | |
436 | "to new tools.\n"); | |
437 | printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" | |
438 | "utils/kernel/pcmcia/pcmcia.html for details.\n"); | |
439 | warning_printed = 1; | |
440 | } | |
441 | ||
b5e43913 | 442 | if (s->pcmcia_state.present) |
e7a480d2 DB |
443 | queue_event(user, CS_EVENT_CARD_INSERTION); |
444 | return 0; | |
445 | } /* ds_open */ | |
446 | ||
447 | /*====================================================================*/ | |
448 | ||
449 | static int ds_release(struct inode *inode, struct file *file) | |
450 | { | |
dc109497 | 451 | struct pcmcia_socket *s; |
e7a480d2 DB |
452 | user_info_t *user, **link; |
453 | ||
454 | ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); | |
455 | ||
456 | user = file->private_data; | |
457 | if (CHECK_USER(user)) | |
458 | goto out; | |
459 | ||
460 | s = user->socket; | |
461 | ||
462 | /* Unlink user data structure */ | |
463 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 464 | s->pcmcia_state.busy = 0; |
e7a480d2 DB |
465 | } |
466 | file->private_data = NULL; | |
467 | for (link = &s->user; *link; link = &(*link)->next) | |
468 | if (*link == user) break; | |
469 | if (link == NULL) | |
470 | goto out; | |
471 | *link = user->next; | |
472 | user->user_magic = 0; | |
473 | kfree(user); | |
dc109497 | 474 | pcmcia_put_socket(s); |
e7a480d2 DB |
475 | out: |
476 | return 0; | |
477 | } /* ds_release */ | |
478 | ||
479 | /*====================================================================*/ | |
480 | ||
481 | static ssize_t ds_read(struct file *file, char __user *buf, | |
482 | size_t count, loff_t *ppos) | |
483 | { | |
dc109497 | 484 | struct pcmcia_socket *s; |
e7a480d2 DB |
485 | user_info_t *user; |
486 | int ret; | |
487 | ||
40fad04b | 488 | ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
489 | |
490 | if (count < 4) | |
491 | return -EINVAL; | |
492 | ||
493 | user = file->private_data; | |
494 | if (CHECK_USER(user)) | |
495 | return -EIO; | |
496 | ||
497 | s = user->socket; | |
b5e43913 | 498 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
499 | return -EIO; |
500 | ||
501 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); | |
502 | if (ret == 0) | |
503 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
504 | ||
505 | return ret; | |
506 | } /* ds_read */ | |
507 | ||
508 | /*====================================================================*/ | |
509 | ||
510 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
511 | size_t count, loff_t *ppos) | |
512 | { | |
40fad04b | 513 | ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
514 | |
515 | if (count != 4) | |
516 | return -EINVAL; | |
517 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
518 | return -EBADF; | |
519 | ||
520 | return -EIO; | |
521 | } /* ds_write */ | |
522 | ||
523 | /*====================================================================*/ | |
524 | ||
525 | /* No kernel lock - fine */ | |
526 | static u_int ds_poll(struct file *file, poll_table *wait) | |
527 | { | |
dc109497 | 528 | struct pcmcia_socket *s; |
e7a480d2 DB |
529 | user_info_t *user; |
530 | ||
40fad04b | 531 | ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
532 | |
533 | user = file->private_data; | |
534 | if (CHECK_USER(user)) | |
535 | return POLLERR; | |
536 | s = user->socket; | |
537 | /* | |
538 | * We don't check for a dead socket here since that | |
539 | * will send cardmgr into an endless spin. | |
540 | */ | |
541 | poll_wait(file, &s->queue, wait); | |
542 | if (!queue_empty(user)) | |
543 | return POLLIN | POLLRDNORM; | |
544 | return 0; | |
545 | } /* ds_poll */ | |
546 | ||
547 | /*====================================================================*/ | |
548 | ||
549 | extern int pcmcia_adjust_resource_info(adjust_t *adj); | |
550 | ||
551 | static int ds_ioctl(struct inode * inode, struct file * file, | |
552 | u_int cmd, u_long arg) | |
553 | { | |
dc109497 | 554 | struct pcmcia_socket *s; |
e7a480d2 DB |
555 | void __user *uarg = (char __user *)arg; |
556 | u_int size; | |
557 | int ret, err; | |
558 | ds_ioctl_arg_t *buf; | |
559 | user_info_t *user; | |
560 | ||
561 | ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); | |
562 | ||
563 | user = file->private_data; | |
564 | if (CHECK_USER(user)) | |
565 | return -EIO; | |
566 | ||
567 | s = user->socket; | |
b5e43913 | 568 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
569 | return -EIO; |
570 | ||
571 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
572 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; | |
573 | ||
574 | /* Permission check */ | |
575 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
576 | return -EPERM; | |
577 | ||
578 | if (cmd & IOC_IN) { | |
579 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
580 | ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); | |
581 | return -EFAULT; | |
582 | } | |
583 | } | |
584 | if (cmd & IOC_OUT) { | |
585 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
586 | ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); | |
587 | return -EFAULT; | |
588 | } | |
589 | } | |
590 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
591 | if (!buf) | |
592 | return -ENOMEM; | |
593 | ||
594 | err = ret = 0; | |
595 | ||
9374074f DB |
596 | if (cmd & IOC_IN) { |
597 | if (__copy_from_user((char *)buf, uarg, size)) { | |
598 | err = -EFAULT; | |
599 | goto free_out; | |
600 | } | |
601 | } | |
e7a480d2 DB |
602 | |
603 | switch (cmd) { | |
604 | case DS_ADJUST_RESOURCE_INFO: | |
605 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
606 | break; | |
e7a480d2 DB |
607 | case DS_GET_CONFIGURATION_INFO: |
608 | if (buf->config.Function && | |
dc109497 | 609 | (buf->config.Function >= s->functions)) |
e7a480d2 | 610 | ret = CS_BAD_ARGS; |
855cdf13 DB |
611 | else { |
612 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); | |
f47ad214 DR |
613 | ret = pccard_get_configuration_info(s, p_dev, &buf->config); |
614 | pcmcia_put_dev(p_dev); | |
855cdf13 | 615 | } |
e7a480d2 DB |
616 | break; |
617 | case DS_GET_FIRST_TUPLE: | |
7fe908dd | 618 | mutex_lock(&s->skt_mutex); |
dc109497 | 619 | pcmcia_validate_mem(s); |
7fe908dd | 620 | mutex_unlock(&s->skt_mutex); |
dc109497 | 621 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
622 | break; |
623 | case DS_GET_NEXT_TUPLE: | |
dc109497 | 624 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
625 | break; |
626 | case DS_GET_TUPLE_DATA: | |
627 | buf->tuple.TupleData = buf->tuple_parse.data; | |
628 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
dc109497 | 629 | ret = pccard_get_tuple_data(s, &buf->tuple); |
e7a480d2 DB |
630 | break; |
631 | case DS_PARSE_TUPLE: | |
632 | buf->tuple.TupleData = buf->tuple_parse.data; | |
633 | ret = pccard_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); | |
634 | break; | |
635 | case DS_RESET_CARD: | |
dc109497 | 636 | ret = pccard_reset_card(s); |
e7a480d2 DB |
637 | break; |
638 | case DS_GET_STATUS: | |
855cdf13 DB |
639 | if (buf->status.Function && |
640 | (buf->status.Function >= s->functions)) | |
641 | ret = CS_BAD_ARGS; | |
642 | else { | |
643 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); | |
f47ad214 DR |
644 | ret = pccard_get_status(s, p_dev, &buf->status); |
645 | pcmcia_put_dev(p_dev); | |
855cdf13 DB |
646 | } |
647 | break; | |
e7a480d2 | 648 | case DS_VALIDATE_CIS: |
7fe908dd | 649 | mutex_lock(&s->skt_mutex); |
dc109497 | 650 | pcmcia_validate_mem(s); |
7fe908dd | 651 | mutex_unlock(&s->skt_mutex); |
dc109497 | 652 | ret = pccard_validate_cis(s, BIND_FN_ALL, &buf->cisinfo); |
e7a480d2 DB |
653 | break; |
654 | case DS_SUSPEND_CARD: | |
dc109497 | 655 | ret = pcmcia_suspend_card(s); |
e7a480d2 DB |
656 | break; |
657 | case DS_RESUME_CARD: | |
dc109497 | 658 | ret = pcmcia_resume_card(s); |
e7a480d2 DB |
659 | break; |
660 | case DS_EJECT_CARD: | |
dc109497 | 661 | err = pcmcia_eject_card(s); |
e7a480d2 DB |
662 | break; |
663 | case DS_INSERT_CARD: | |
dc109497 | 664 | err = pcmcia_insert_card(s); |
e7a480d2 DB |
665 | break; |
666 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
667 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
668 | err = -EPERM; | |
669 | goto free_out; | |
670 | } | |
855cdf13 DB |
671 | |
672 | ret = CS_BAD_ARGS; | |
673 | ||
674 | if (!(buf->conf_reg.Function && | |
675 | (buf->conf_reg.Function >= s->functions))) { | |
676 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); | |
73d58588 | 677 | if (p_dev) { |
855cdf13 | 678 | ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); |
73d58588 BH |
679 | pcmcia_put_dev(p_dev); |
680 | } | |
855cdf13 | 681 | } |
e7a480d2 DB |
682 | break; |
683 | case DS_GET_FIRST_REGION: | |
684 | case DS_GET_NEXT_REGION: | |
685 | case DS_BIND_MTD: | |
686 | if (!capable(CAP_SYS_ADMIN)) { | |
687 | err = -EPERM; | |
688 | goto free_out; | |
689 | } else { | |
690 | static int printed = 0; | |
691 | if (!printed) { | |
692 | printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
693 | printk(KERN_WARNING "MTD handling any more.\n"); | |
694 | printed++; | |
695 | } | |
696 | } | |
697 | err = -EINVAL; | |
698 | goto free_out; | |
699 | break; | |
700 | case DS_GET_FIRST_WINDOW: | |
dc109497 | 701 | ret = pcmcia_get_window(s, &buf->win_info.handle, 0, |
e7a480d2 DB |
702 | &buf->win_info.window); |
703 | break; | |
704 | case DS_GET_NEXT_WINDOW: | |
dc109497 | 705 | ret = pcmcia_get_window(s, &buf->win_info.handle, |
e7a480d2 DB |
706 | buf->win_info.handle->index + 1, &buf->win_info.window); |
707 | break; | |
708 | case DS_GET_MEM_PAGE: | |
709 | ret = pcmcia_get_mem_page(buf->win_info.handle, | |
710 | &buf->win_info.map); | |
711 | break; | |
712 | case DS_REPLACE_CIS: | |
dc109497 | 713 | ret = pcmcia_replace_cis(s, &buf->cisdump); |
e7a480d2 DB |
714 | break; |
715 | case DS_BIND_REQUEST: | |
716 | if (!capable(CAP_SYS_ADMIN)) { | |
717 | err = -EPERM; | |
718 | goto free_out; | |
719 | } | |
720 | err = bind_request(s, &buf->bind_info); | |
721 | break; | |
722 | case DS_GET_DEVICE_INFO: | |
723 | err = get_device_info(s, &buf->bind_info, 1); | |
724 | break; | |
725 | case DS_GET_NEXT_DEVICE: | |
726 | err = get_device_info(s, &buf->bind_info, 0); | |
727 | break; | |
728 | case DS_UNBIND_REQUEST: | |
729 | err = 0; | |
730 | break; | |
731 | default: | |
732 | err = -EINVAL; | |
733 | } | |
734 | ||
735 | if ((err == 0) && (ret != CS_SUCCESS)) { | |
736 | ds_dbg(2, "ds_ioctl: ret = %d\n", ret); | |
737 | switch (ret) { | |
738 | case CS_BAD_SOCKET: case CS_NO_CARD: | |
739 | err = -ENODEV; break; | |
740 | case CS_BAD_ARGS: case CS_BAD_ATTRIBUTE: case CS_BAD_IRQ: | |
741 | case CS_BAD_TUPLE: | |
742 | err = -EINVAL; break; | |
743 | case CS_IN_USE: | |
744 | err = -EBUSY; break; | |
745 | case CS_OUT_OF_RESOURCE: | |
746 | err = -ENOSPC; break; | |
747 | case CS_NO_MORE_ITEMS: | |
748 | err = -ENODATA; break; | |
749 | case CS_UNSUPPORTED_FUNCTION: | |
750 | err = -ENOSYS; break; | |
751 | default: | |
752 | err = -EIO; break; | |
753 | } | |
754 | } | |
755 | ||
756 | if (cmd & IOC_OUT) { | |
757 | if (__copy_to_user(uarg, (char *)buf, size)) | |
758 | err = -EFAULT; | |
759 | } | |
760 | ||
761 | free_out: | |
762 | kfree(buf); | |
763 | return err; | |
764 | } /* ds_ioctl */ | |
765 | ||
766 | /*====================================================================*/ | |
767 | ||
d54b1fdb | 768 | static const struct file_operations ds_fops = { |
e7a480d2 DB |
769 | .owner = THIS_MODULE, |
770 | .open = ds_open, | |
771 | .release = ds_release, | |
772 | .ioctl = ds_ioctl, | |
773 | .read = ds_read, | |
774 | .write = ds_write, | |
775 | .poll = ds_poll, | |
776 | }; | |
777 | ||
778 | void __init pcmcia_setup_ioctl(void) { | |
779 | int i; | |
780 | ||
781 | /* Set up character device for user mode clients */ | |
782 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
1a8ceafc | 783 | if (i < 0) |
e7a480d2 | 784 | printk(KERN_NOTICE "unable to find a free device # for " |
1a8ceafc | 785 | "Driver Services (error=%d)\n", i); |
e7a480d2 DB |
786 | else |
787 | major_dev = i; | |
788 | ||
789 | #ifdef CONFIG_PROC_FS | |
790 | proc_pccard = proc_mkdir("pccard", proc_bus); | |
791 | if (proc_pccard) | |
792 | create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL); | |
793 | #endif | |
794 | } | |
795 | ||
796 | ||
797 | void __exit pcmcia_cleanup_ioctl(void) { | |
798 | #ifdef CONFIG_PROC_FS | |
799 | if (proc_pccard) { | |
800 | remove_proc_entry("drivers", proc_pccard); | |
801 | remove_proc_entry("pccard", proc_bus); | |
802 | } | |
803 | #endif | |
804 | if (major_dev != -1) | |
805 | unregister_chrdev(major_dev, "pcmcia"); | |
806 | } |