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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 | ||
21 | #include <linux/config.h> | |
3b659fb8 | 22 | #include <linux/kernel.h> |
e7a480d2 | 23 | #include <linux/module.h> |
e7a480d2 | 24 | #include <linux/init.h> |
e7a480d2 | 25 | #include <linux/major.h> |
e7a480d2 | 26 | #include <linux/errno.h> |
e7a480d2 DB |
27 | #include <linux/ioctl.h> |
28 | #include <linux/proc_fs.h> | |
29 | #include <linux/poll.h> | |
30 | #include <linux/pci.h> | |
e7a480d2 | 31 | #include <linux/workqueue.h> |
e7a480d2 DB |
32 | |
33 | #define IN_CARD_SERVICES | |
e7a480d2 DB |
34 | #include <pcmcia/cs_types.h> |
35 | #include <pcmcia/cs.h> | |
e7a480d2 DB |
36 | #include <pcmcia/cistpl.h> |
37 | #include <pcmcia/ds.h> | |
38 | #include <pcmcia/ss.h> | |
39 | ||
40 | #include "cs_internal.h" | |
41 | #include "ds_internal.h" | |
42 | ||
43 | static int major_dev = -1; | |
44 | ||
45 | ||
46 | /* Device user information */ | |
47 | #define MAX_EVENTS 32 | |
48 | #define USER_MAGIC 0x7ea4 | |
49 | #define CHECK_USER(u) \ | |
50 | (((u) == NULL) || ((u)->user_magic != USER_MAGIC)) | |
51 | ||
52 | typedef struct user_info_t { | |
53 | u_int user_magic; | |
54 | int event_head, event_tail; | |
55 | event_t event[MAX_EVENTS]; | |
56 | struct user_info_t *next; | |
dc109497 | 57 | struct pcmcia_socket *socket; |
e7a480d2 DB |
58 | } user_info_t; |
59 | ||
60 | ||
61 | #ifdef DEBUG | |
62 | extern int ds_pc_debug; | |
63 | #define cs_socket_name(skt) ((skt)->dev.class_id) | |
64 | ||
65 | #define ds_dbg(lvl, fmt, arg...) do { \ | |
66 | if (ds_pc_debug >= lvl) \ | |
67 | printk(KERN_DEBUG "ds: " fmt , ## arg); \ | |
68 | } while (0) | |
69 | #else | |
70 | #define ds_dbg(lvl, fmt, arg...) do { } while (0) | |
71 | #endif | |
72 | ||
855cdf13 DB |
73 | static struct pcmcia_device *get_pcmcia_device(struct pcmcia_socket *s, |
74 | unsigned int function) | |
75 | { | |
76 | struct pcmcia_device *p_dev = NULL; | |
77 | unsigned long flags; | |
78 | ||
79 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
80 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
81 | if (p_dev->func == function) { | |
82 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
83 | return pcmcia_get_dev(p_dev); | |
84 | } | |
85 | } | |
86 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
87 | return NULL; | |
88 | } | |
e7a480d2 | 89 | |
e7a480d2 DB |
90 | /* backwards-compatible accessing of driver --- by name! */ |
91 | ||
855cdf13 | 92 | static struct pcmcia_driver *get_pcmcia_driver(dev_info_t *dev_info) |
e7a480d2 DB |
93 | { |
94 | struct device_driver *drv; | |
95 | struct pcmcia_driver *p_drv; | |
96 | ||
97 | drv = driver_find((char *) dev_info, &pcmcia_bus_type); | |
98 | if (!drv) | |
99 | return NULL; | |
100 | ||
101 | p_drv = container_of(drv, struct pcmcia_driver, drv); | |
102 | ||
103 | return (p_drv); | |
104 | } | |
105 | ||
106 | ||
107 | #ifdef CONFIG_PROC_FS | |
108 | static struct proc_dir_entry *proc_pccard = NULL; | |
109 | ||
110 | static int proc_read_drivers_callback(struct device_driver *driver, void *d) | |
111 | { | |
112 | char **p = d; | |
113 | struct pcmcia_driver *p_drv = container_of(driver, | |
114 | struct pcmcia_driver, drv); | |
115 | ||
116 | *p += sprintf(*p, "%-24.24s 1 %d\n", p_drv->drv.name, | |
117 | #ifdef CONFIG_MODULE_UNLOAD | |
118 | (p_drv->owner) ? module_refcount(p_drv->owner) : 1 | |
119 | #else | |
120 | 1 | |
121 | #endif | |
122 | ); | |
123 | d = (void *) p; | |
124 | ||
125 | return 0; | |
126 | } | |
127 | ||
128 | static int proc_read_drivers(char *buf, char **start, off_t pos, | |
129 | int count, int *eof, void *data) | |
130 | { | |
131 | char *p = buf; | |
132 | ||
133 | bus_for_each_drv(&pcmcia_bus_type, NULL, | |
134 | (void *) &p, proc_read_drivers_callback); | |
135 | ||
136 | return (p - buf); | |
137 | } | |
138 | #endif | |
139 | ||
140 | /*====================================================================== | |
141 | ||
142 | These manage a ring buffer of events pending for one user process | |
143 | ||
144 | ======================================================================*/ | |
145 | ||
146 | ||
147 | static int queue_empty(user_info_t *user) | |
148 | { | |
149 | return (user->event_head == user->event_tail); | |
150 | } | |
151 | ||
152 | static event_t get_queued_event(user_info_t *user) | |
153 | { | |
154 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
155 | return user->event[user->event_tail]; | |
156 | } | |
157 | ||
158 | static void queue_event(user_info_t *user, event_t event) | |
159 | { | |
160 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
161 | if (user->event_head == user->event_tail) | |
162 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
163 | user->event[user->event_head] = event; | |
164 | } | |
165 | ||
dc109497 | 166 | void handle_event(struct pcmcia_socket *s, event_t event) |
e7a480d2 DB |
167 | { |
168 | user_info_t *user; | |
169 | for (user = s->user; user; user = user->next) | |
170 | queue_event(user, event); | |
171 | wake_up_interruptible(&s->queue); | |
172 | } | |
173 | ||
174 | ||
175 | /*====================================================================== | |
176 | ||
177 | bind_request() and bind_device() are merged by now. Register_client() | |
178 | is called right at the end of bind_request(), during the driver's | |
179 | ->attach() call. Individual descriptions: | |
180 | ||
181 | bind_request() connects a socket to a particular client driver. | |
182 | It looks up the specified device ID in the list of registered | |
183 | drivers, binds it to the socket, and tries to create an instance | |
184 | of the device. unbind_request() deletes a driver instance. | |
185 | ||
186 | Bind_device() associates a device driver with a particular socket. | |
187 | It is normally called by Driver Services after it has identified | |
188 | a newly inserted card. An instance of that driver will then be | |
189 | eligible to register as a client of this socket. | |
190 | ||
191 | Register_client() uses the dev_info_t handle to match the | |
192 | caller with a socket. The driver must have already been bound | |
193 | to a socket with bind_device() -- in fact, bind_device() | |
194 | allocates the client structure that will be used. | |
195 | ||
196 | ======================================================================*/ | |
197 | ||
dc109497 | 198 | static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) |
e7a480d2 DB |
199 | { |
200 | struct pcmcia_driver *p_drv; | |
201 | struct pcmcia_device *p_dev; | |
202 | int ret = 0; | |
203 | unsigned long flags; | |
204 | ||
dc109497 | 205 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
206 | if (!s) |
207 | return -EINVAL; | |
208 | ||
dc109497 | 209 | ds_dbg(2, "bind_request(%d, '%s')\n", s->sock, |
e7a480d2 DB |
210 | (char *)bind_info->dev_info); |
211 | ||
212 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
213 | if (!p_drv) { | |
214 | ret = -EINVAL; | |
215 | goto err_put; | |
216 | } | |
217 | ||
218 | if (!try_module_get(p_drv->owner)) { | |
219 | ret = -EINVAL; | |
220 | goto err_put_driver; | |
221 | } | |
222 | ||
223 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
224 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
225 | if (p_dev->func == bind_info->function) { | |
226 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
227 | if (p_dev->cardmgr) { | |
228 | /* if there's already a device | |
229 | * registered, and it was registered | |
230 | * by userspace before, we need to | |
231 | * return the "instance". */ | |
232 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
233 | bind_info->instance = p_dev->instance; | |
234 | ret = -EBUSY; | |
235 | goto err_put_module; | |
236 | } else { | |
237 | /* the correct driver managed to bind | |
238 | * itself magically to the correct | |
239 | * device. */ | |
240 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
241 | p_dev->cardmgr = p_drv; | |
242 | ret = 0; | |
243 | goto err_put_module; | |
244 | } | |
245 | } else if (!p_dev->dev.driver) { | |
246 | /* there's already a device available where | |
247 | * no device has been bound to yet. So we don't | |
248 | * need to register a device! */ | |
249 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
250 | goto rescan; | |
251 | } | |
252 | } | |
253 | } | |
254 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
255 | ||
256 | p_dev = pcmcia_device_add(s, bind_info->function); | |
257 | if (!p_dev) { | |
258 | ret = -EIO; | |
259 | goto err_put_module; | |
260 | } | |
261 | ||
262 | rescan: | |
263 | p_dev->cardmgr = p_drv; | |
264 | ||
265 | /* if a driver is already running, we can abort */ | |
266 | if (p_dev->dev.driver) | |
267 | goto err_put_module; | |
268 | ||
269 | /* | |
270 | * Prevent this racing with a card insertion. | |
271 | */ | |
7fe908dd | 272 | mutex_lock(&s->skt_mutex); |
e7a480d2 | 273 | bus_rescan_devices(&pcmcia_bus_type); |
7fe908dd | 274 | mutex_unlock(&s->skt_mutex); |
e7a480d2 DB |
275 | |
276 | /* check whether the driver indeed matched. I don't care if this | |
277 | * is racy or not, because it can only happen on cardmgr access | |
278 | * paths... | |
279 | */ | |
280 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
281 | p_dev->cardmgr = NULL; | |
282 | ||
283 | err_put_module: | |
284 | module_put(p_drv->owner); | |
285 | err_put_driver: | |
286 | put_driver(&p_drv->drv); | |
287 | err_put: | |
dc109497 | 288 | pcmcia_put_socket(s); |
e7a480d2 DB |
289 | |
290 | return (ret); | |
291 | } /* bind_request */ | |
292 | ||
33519ddd DB |
293 | #ifdef CONFIG_CARDBUS |
294 | ||
295 | static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) | |
296 | { | |
297 | if (!s || !(s->state & SOCKET_CARDBUS)) | |
298 | return NULL; | |
e7a480d2 | 299 | |
33519ddd DB |
300 | return s->cb_dev->subordinate; |
301 | } | |
302 | #endif | |
e7a480d2 | 303 | |
dc109497 | 304 | static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) |
e7a480d2 DB |
305 | { |
306 | dev_node_t *node; | |
307 | struct pcmcia_device *p_dev; | |
308 | unsigned long flags; | |
309 | int ret = 0; | |
310 | ||
311 | #ifdef CONFIG_CARDBUS | |
312 | /* | |
313 | * Some unbelievably ugly code to associate the PCI cardbus | |
314 | * device and its driver with the PCMCIA "bind" information. | |
315 | */ | |
316 | { | |
317 | struct pci_bus *bus; | |
318 | ||
dc109497 | 319 | bus = pcmcia_lookup_bus(s); |
e7a480d2 DB |
320 | if (bus) { |
321 | struct list_head *list; | |
322 | struct pci_dev *dev = NULL; | |
323 | ||
324 | list = bus->devices.next; | |
325 | while (list != &bus->devices) { | |
326 | struct pci_dev *pdev = pci_dev_b(list); | |
327 | list = list->next; | |
328 | ||
329 | if (first) { | |
330 | dev = pdev; | |
331 | break; | |
332 | } | |
333 | ||
334 | /* Try to handle "next" here some way? */ | |
335 | } | |
336 | if (dev && dev->driver) { | |
337 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
338 | bind_info->major = 0; | |
339 | bind_info->minor = 0; | |
340 | bind_info->next = NULL; | |
341 | return 0; | |
342 | } | |
343 | } | |
344 | } | |
345 | #endif | |
346 | ||
347 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
348 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
349 | if (p_dev->func == bind_info->function) { | |
350 | p_dev = pcmcia_get_dev(p_dev); | |
351 | if (!p_dev) | |
352 | continue; | |
353 | goto found; | |
354 | } | |
355 | } | |
356 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
357 | return -ENODEV; | |
358 | ||
359 | found: | |
360 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
361 | ||
362 | if ((!p_dev->instance) || | |
363 | (p_dev->instance->state & DEV_CONFIG_PENDING)) { | |
364 | ret = -EAGAIN; | |
365 | goto err_put; | |
366 | } | |
367 | ||
368 | if (first) | |
369 | node = p_dev->instance->dev; | |
370 | else | |
371 | for (node = p_dev->instance->dev; node; node = node->next) | |
372 | if (node == bind_info->next) | |
373 | break; | |
374 | if (!node) { | |
375 | ret = -ENODEV; | |
376 | goto err_put; | |
377 | } | |
378 | ||
379 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
380 | bind_info->major = node->major; | |
381 | bind_info->minor = node->minor; | |
382 | bind_info->next = node->next; | |
383 | ||
384 | err_put: | |
385 | pcmcia_put_dev(p_dev); | |
386 | return (ret); | |
387 | } /* get_device_info */ | |
388 | ||
389 | ||
390 | static int ds_open(struct inode *inode, struct file *file) | |
391 | { | |
392 | socket_t i = iminor(inode); | |
dc109497 | 393 | struct pcmcia_socket *s; |
e7a480d2 | 394 | user_info_t *user; |
c352ec8a | 395 | static int warning_printed = 0; |
e7a480d2 DB |
396 | |
397 | ds_dbg(0, "ds_open(socket %d)\n", i); | |
398 | ||
dc109497 | 399 | s = pcmcia_get_socket_by_nr(i); |
e7a480d2 DB |
400 | if (!s) |
401 | return -ENODEV; | |
dc109497 | 402 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
403 | if (!s) |
404 | return -ENODEV; | |
405 | ||
406 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 407 | if (s->pcmcia_state.busy) { |
dc109497 | 408 | pcmcia_put_socket(s); |
e7a480d2 DB |
409 | return -EBUSY; |
410 | } | |
411 | else | |
b5e43913 | 412 | s->pcmcia_state.busy = 1; |
e7a480d2 DB |
413 | } |
414 | ||
415 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
416 | if (!user) { | |
dc109497 | 417 | pcmcia_put_socket(s); |
e7a480d2 DB |
418 | return -ENOMEM; |
419 | } | |
420 | user->event_tail = user->event_head = 0; | |
421 | user->next = s->user; | |
422 | user->user_magic = USER_MAGIC; | |
423 | user->socket = s; | |
424 | s->user = user; | |
425 | file->private_data = user; | |
426 | ||
c352ec8a DB |
427 | if (!warning_printed) { |
428 | printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " | |
429 | "usage.\n"); | |
430 | printk(KERN_INFO "pcmcia: This interface will soon be removed from " | |
431 | "the kernel; please expect breakage unless you upgrade " | |
432 | "to new tools.\n"); | |
433 | printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" | |
434 | "utils/kernel/pcmcia/pcmcia.html for details.\n"); | |
435 | warning_printed = 1; | |
436 | } | |
437 | ||
b5e43913 | 438 | if (s->pcmcia_state.present) |
e7a480d2 DB |
439 | queue_event(user, CS_EVENT_CARD_INSERTION); |
440 | return 0; | |
441 | } /* ds_open */ | |
442 | ||
443 | /*====================================================================*/ | |
444 | ||
445 | static int ds_release(struct inode *inode, struct file *file) | |
446 | { | |
dc109497 | 447 | struct pcmcia_socket *s; |
e7a480d2 DB |
448 | user_info_t *user, **link; |
449 | ||
450 | ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); | |
451 | ||
452 | user = file->private_data; | |
453 | if (CHECK_USER(user)) | |
454 | goto out; | |
455 | ||
456 | s = user->socket; | |
457 | ||
458 | /* Unlink user data structure */ | |
459 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 460 | s->pcmcia_state.busy = 0; |
e7a480d2 DB |
461 | } |
462 | file->private_data = NULL; | |
463 | for (link = &s->user; *link; link = &(*link)->next) | |
464 | if (*link == user) break; | |
465 | if (link == NULL) | |
466 | goto out; | |
467 | *link = user->next; | |
468 | user->user_magic = 0; | |
469 | kfree(user); | |
dc109497 | 470 | pcmcia_put_socket(s); |
e7a480d2 DB |
471 | out: |
472 | return 0; | |
473 | } /* ds_release */ | |
474 | ||
475 | /*====================================================================*/ | |
476 | ||
477 | static ssize_t ds_read(struct file *file, char __user *buf, | |
478 | size_t count, loff_t *ppos) | |
479 | { | |
dc109497 | 480 | struct pcmcia_socket *s; |
e7a480d2 DB |
481 | user_info_t *user; |
482 | int ret; | |
483 | ||
484 | ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
485 | ||
486 | if (count < 4) | |
487 | return -EINVAL; | |
488 | ||
489 | user = file->private_data; | |
490 | if (CHECK_USER(user)) | |
491 | return -EIO; | |
492 | ||
493 | s = user->socket; | |
b5e43913 | 494 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
495 | return -EIO; |
496 | ||
497 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); | |
498 | if (ret == 0) | |
499 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
500 | ||
501 | return ret; | |
502 | } /* ds_read */ | |
503 | ||
504 | /*====================================================================*/ | |
505 | ||
506 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
507 | size_t count, loff_t *ppos) | |
508 | { | |
509 | ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
510 | ||
511 | if (count != 4) | |
512 | return -EINVAL; | |
513 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
514 | return -EBADF; | |
515 | ||
516 | return -EIO; | |
517 | } /* ds_write */ | |
518 | ||
519 | /*====================================================================*/ | |
520 | ||
521 | /* No kernel lock - fine */ | |
522 | static u_int ds_poll(struct file *file, poll_table *wait) | |
523 | { | |
dc109497 | 524 | struct pcmcia_socket *s; |
e7a480d2 DB |
525 | user_info_t *user; |
526 | ||
527 | ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
528 | ||
529 | user = file->private_data; | |
530 | if (CHECK_USER(user)) | |
531 | return POLLERR; | |
532 | s = user->socket; | |
533 | /* | |
534 | * We don't check for a dead socket here since that | |
535 | * will send cardmgr into an endless spin. | |
536 | */ | |
537 | poll_wait(file, &s->queue, wait); | |
538 | if (!queue_empty(user)) | |
539 | return POLLIN | POLLRDNORM; | |
540 | return 0; | |
541 | } /* ds_poll */ | |
542 | ||
543 | /*====================================================================*/ | |
544 | ||
545 | extern int pcmcia_adjust_resource_info(adjust_t *adj); | |
546 | ||
547 | static int ds_ioctl(struct inode * inode, struct file * file, | |
548 | u_int cmd, u_long arg) | |
549 | { | |
dc109497 | 550 | struct pcmcia_socket *s; |
e7a480d2 DB |
551 | void __user *uarg = (char __user *)arg; |
552 | u_int size; | |
553 | int ret, err; | |
554 | ds_ioctl_arg_t *buf; | |
555 | user_info_t *user; | |
556 | ||
557 | ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); | |
558 | ||
559 | user = file->private_data; | |
560 | if (CHECK_USER(user)) | |
561 | return -EIO; | |
562 | ||
563 | s = user->socket; | |
b5e43913 | 564 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
565 | return -EIO; |
566 | ||
567 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
568 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; | |
569 | ||
570 | /* Permission check */ | |
571 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
572 | return -EPERM; | |
573 | ||
574 | if (cmd & IOC_IN) { | |
575 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
576 | ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); | |
577 | return -EFAULT; | |
578 | } | |
579 | } | |
580 | if (cmd & IOC_OUT) { | |
581 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
582 | ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); | |
583 | return -EFAULT; | |
584 | } | |
585 | } | |
586 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
587 | if (!buf) | |
588 | return -ENOMEM; | |
589 | ||
590 | err = ret = 0; | |
591 | ||
592 | if (cmd & IOC_IN) __copy_from_user((char *)buf, uarg, size); | |
593 | ||
594 | switch (cmd) { | |
595 | case DS_ADJUST_RESOURCE_INFO: | |
596 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
597 | break; | |
e7a480d2 DB |
598 | case DS_GET_CONFIGURATION_INFO: |
599 | if (buf->config.Function && | |
dc109497 | 600 | (buf->config.Function >= s->functions)) |
e7a480d2 | 601 | ret = CS_BAD_ARGS; |
855cdf13 DB |
602 | else { |
603 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); | |
604 | ret = pccard_get_configuration_info(s, p_dev, &buf->config); | |
605 | pcmcia_put_dev(p_dev); | |
606 | } | |
e7a480d2 DB |
607 | break; |
608 | case DS_GET_FIRST_TUPLE: | |
7fe908dd | 609 | mutex_lock(&s->skt_mutex); |
dc109497 | 610 | pcmcia_validate_mem(s); |
7fe908dd | 611 | mutex_unlock(&s->skt_mutex); |
dc109497 | 612 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
613 | break; |
614 | case DS_GET_NEXT_TUPLE: | |
dc109497 | 615 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
616 | break; |
617 | case DS_GET_TUPLE_DATA: | |
618 | buf->tuple.TupleData = buf->tuple_parse.data; | |
619 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
dc109497 | 620 | ret = pccard_get_tuple_data(s, &buf->tuple); |
e7a480d2 DB |
621 | break; |
622 | case DS_PARSE_TUPLE: | |
623 | buf->tuple.TupleData = buf->tuple_parse.data; | |
624 | ret = pccard_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); | |
625 | break; | |
626 | case DS_RESET_CARD: | |
dc109497 | 627 | ret = pccard_reset_card(s); |
e7a480d2 DB |
628 | break; |
629 | case DS_GET_STATUS: | |
855cdf13 DB |
630 | if (buf->status.Function && |
631 | (buf->status.Function >= s->functions)) | |
632 | ret = CS_BAD_ARGS; | |
633 | else { | |
634 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); | |
635 | ret = pccard_get_status(s, p_dev, &buf->status); | |
636 | pcmcia_put_dev(p_dev); | |
637 | } | |
638 | break; | |
e7a480d2 | 639 | case DS_VALIDATE_CIS: |
7fe908dd | 640 | mutex_lock(&s->skt_mutex); |
dc109497 | 641 | pcmcia_validate_mem(s); |
7fe908dd | 642 | mutex_unlock(&s->skt_mutex); |
dc109497 | 643 | ret = pccard_validate_cis(s, BIND_FN_ALL, &buf->cisinfo); |
e7a480d2 DB |
644 | break; |
645 | case DS_SUSPEND_CARD: | |
dc109497 | 646 | ret = pcmcia_suspend_card(s); |
e7a480d2 DB |
647 | break; |
648 | case DS_RESUME_CARD: | |
dc109497 | 649 | ret = pcmcia_resume_card(s); |
e7a480d2 DB |
650 | break; |
651 | case DS_EJECT_CARD: | |
dc109497 | 652 | err = pcmcia_eject_card(s); |
e7a480d2 DB |
653 | break; |
654 | case DS_INSERT_CARD: | |
dc109497 | 655 | err = pcmcia_insert_card(s); |
e7a480d2 DB |
656 | break; |
657 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
658 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
659 | err = -EPERM; | |
660 | goto free_out; | |
661 | } | |
855cdf13 DB |
662 | |
663 | ret = CS_BAD_ARGS; | |
664 | ||
665 | if (!(buf->conf_reg.Function && | |
666 | (buf->conf_reg.Function >= s->functions))) { | |
667 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); | |
668 | if (p_dev) | |
669 | ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); | |
670 | pcmcia_put_dev(p_dev); | |
671 | } | |
e7a480d2 DB |
672 | break; |
673 | case DS_GET_FIRST_REGION: | |
674 | case DS_GET_NEXT_REGION: | |
675 | case DS_BIND_MTD: | |
676 | if (!capable(CAP_SYS_ADMIN)) { | |
677 | err = -EPERM; | |
678 | goto free_out; | |
679 | } else { | |
680 | static int printed = 0; | |
681 | if (!printed) { | |
682 | printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
683 | printk(KERN_WARNING "MTD handling any more.\n"); | |
684 | printed++; | |
685 | } | |
686 | } | |
687 | err = -EINVAL; | |
688 | goto free_out; | |
689 | break; | |
690 | case DS_GET_FIRST_WINDOW: | |
dc109497 | 691 | ret = pcmcia_get_window(s, &buf->win_info.handle, 0, |
e7a480d2 DB |
692 | &buf->win_info.window); |
693 | break; | |
694 | case DS_GET_NEXT_WINDOW: | |
dc109497 | 695 | ret = pcmcia_get_window(s, &buf->win_info.handle, |
e7a480d2 DB |
696 | buf->win_info.handle->index + 1, &buf->win_info.window); |
697 | break; | |
698 | case DS_GET_MEM_PAGE: | |
699 | ret = pcmcia_get_mem_page(buf->win_info.handle, | |
700 | &buf->win_info.map); | |
701 | break; | |
702 | case DS_REPLACE_CIS: | |
dc109497 | 703 | ret = pcmcia_replace_cis(s, &buf->cisdump); |
e7a480d2 DB |
704 | break; |
705 | case DS_BIND_REQUEST: | |
706 | if (!capable(CAP_SYS_ADMIN)) { | |
707 | err = -EPERM; | |
708 | goto free_out; | |
709 | } | |
710 | err = bind_request(s, &buf->bind_info); | |
711 | break; | |
712 | case DS_GET_DEVICE_INFO: | |
713 | err = get_device_info(s, &buf->bind_info, 1); | |
714 | break; | |
715 | case DS_GET_NEXT_DEVICE: | |
716 | err = get_device_info(s, &buf->bind_info, 0); | |
717 | break; | |
718 | case DS_UNBIND_REQUEST: | |
719 | err = 0; | |
720 | break; | |
721 | default: | |
722 | err = -EINVAL; | |
723 | } | |
724 | ||
725 | if ((err == 0) && (ret != CS_SUCCESS)) { | |
726 | ds_dbg(2, "ds_ioctl: ret = %d\n", ret); | |
727 | switch (ret) { | |
728 | case CS_BAD_SOCKET: case CS_NO_CARD: | |
729 | err = -ENODEV; break; | |
730 | case CS_BAD_ARGS: case CS_BAD_ATTRIBUTE: case CS_BAD_IRQ: | |
731 | case CS_BAD_TUPLE: | |
732 | err = -EINVAL; break; | |
733 | case CS_IN_USE: | |
734 | err = -EBUSY; break; | |
735 | case CS_OUT_OF_RESOURCE: | |
736 | err = -ENOSPC; break; | |
737 | case CS_NO_MORE_ITEMS: | |
738 | err = -ENODATA; break; | |
739 | case CS_UNSUPPORTED_FUNCTION: | |
740 | err = -ENOSYS; break; | |
741 | default: | |
742 | err = -EIO; break; | |
743 | } | |
744 | } | |
745 | ||
746 | if (cmd & IOC_OUT) { | |
747 | if (__copy_to_user(uarg, (char *)buf, size)) | |
748 | err = -EFAULT; | |
749 | } | |
750 | ||
751 | free_out: | |
752 | kfree(buf); | |
753 | return err; | |
754 | } /* ds_ioctl */ | |
755 | ||
756 | /*====================================================================*/ | |
757 | ||
758 | static struct file_operations ds_fops = { | |
759 | .owner = THIS_MODULE, | |
760 | .open = ds_open, | |
761 | .release = ds_release, | |
762 | .ioctl = ds_ioctl, | |
763 | .read = ds_read, | |
764 | .write = ds_write, | |
765 | .poll = ds_poll, | |
766 | }; | |
767 | ||
768 | void __init pcmcia_setup_ioctl(void) { | |
769 | int i; | |
770 | ||
771 | /* Set up character device for user mode clients */ | |
772 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
1a8ceafc | 773 | if (i < 0) |
e7a480d2 | 774 | printk(KERN_NOTICE "unable to find a free device # for " |
1a8ceafc | 775 | "Driver Services (error=%d)\n", i); |
e7a480d2 DB |
776 | else |
777 | major_dev = i; | |
778 | ||
779 | #ifdef CONFIG_PROC_FS | |
780 | proc_pccard = proc_mkdir("pccard", proc_bus); | |
781 | if (proc_pccard) | |
782 | create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL); | |
783 | #endif | |
784 | } | |
785 | ||
786 | ||
787 | void __exit pcmcia_cleanup_ioctl(void) { | |
788 | #ifdef CONFIG_PROC_FS | |
789 | if (proc_pccard) { | |
790 | remove_proc_entry("drivers", proc_pccard); | |
791 | remove_proc_entry("pccard", proc_bus); | |
792 | } | |
793 | #endif | |
794 | if (major_dev != -1) | |
795 | unregister_chrdev(major_dev, "pcmcia"); | |
796 | } |