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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> | |
22 | #include <linux/module.h> | |
23 | #include <linux/moduleparam.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/major.h> | |
27 | #include <linux/string.h> | |
28 | #include <linux/errno.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/mm.h> | |
31 | #include <linux/fcntl.h> | |
32 | #include <linux/sched.h> | |
33 | #include <linux/smp_lock.h> | |
34 | #include <linux/timer.h> | |
35 | #include <linux/ioctl.h> | |
36 | #include <linux/proc_fs.h> | |
37 | #include <linux/poll.h> | |
38 | #include <linux/pci.h> | |
39 | #include <linux/list.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/kref.h> | |
42 | #include <linux/workqueue.h> | |
43 | #include <linux/crc32.h> | |
44 | ||
45 | #include <asm/atomic.h> | |
46 | ||
47 | #define IN_CARD_SERVICES | |
48 | #include <pcmcia/version.h> | |
49 | #include <pcmcia/cs_types.h> | |
50 | #include <pcmcia/cs.h> | |
51 | #include <pcmcia/bulkmem.h> | |
52 | #include <pcmcia/cistpl.h> | |
53 | #include <pcmcia/ds.h> | |
54 | #include <pcmcia/ss.h> | |
55 | ||
56 | #include "cs_internal.h" | |
57 | #include "ds_internal.h" | |
58 | ||
59 | static int major_dev = -1; | |
60 | ||
61 | ||
62 | /* Device user information */ | |
63 | #define MAX_EVENTS 32 | |
64 | #define USER_MAGIC 0x7ea4 | |
65 | #define CHECK_USER(u) \ | |
66 | (((u) == NULL) || ((u)->user_magic != USER_MAGIC)) | |
67 | ||
68 | typedef struct user_info_t { | |
69 | u_int user_magic; | |
70 | int event_head, event_tail; | |
71 | event_t event[MAX_EVENTS]; | |
72 | struct user_info_t *next; | |
73 | struct pcmcia_bus_socket *socket; | |
74 | } user_info_t; | |
75 | ||
76 | ||
77 | #ifdef DEBUG | |
78 | extern int ds_pc_debug; | |
79 | #define cs_socket_name(skt) ((skt)->dev.class_id) | |
80 | ||
81 | #define ds_dbg(lvl, fmt, arg...) do { \ | |
82 | if (ds_pc_debug >= lvl) \ | |
83 | printk(KERN_DEBUG "ds: " fmt , ## arg); \ | |
84 | } while (0) | |
85 | #else | |
86 | #define ds_dbg(lvl, fmt, arg...) do { } while (0) | |
87 | #endif | |
88 | ||
89 | ||
90 | static struct pcmcia_bus_socket * get_socket_info_by_nr(unsigned int nr) | |
91 | { | |
92 | struct pcmcia_socket * s = pcmcia_get_socket_by_nr(nr); | |
93 | if (s && s->pcmcia) | |
94 | return s->pcmcia; | |
95 | else | |
96 | return NULL; | |
97 | } | |
98 | ||
99 | /* backwards-compatible accessing of driver --- by name! */ | |
100 | ||
101 | static struct pcmcia_driver * get_pcmcia_driver (dev_info_t *dev_info) | |
102 | { | |
103 | struct device_driver *drv; | |
104 | struct pcmcia_driver *p_drv; | |
105 | ||
106 | drv = driver_find((char *) dev_info, &pcmcia_bus_type); | |
107 | if (!drv) | |
108 | return NULL; | |
109 | ||
110 | p_drv = container_of(drv, struct pcmcia_driver, drv); | |
111 | ||
112 | return (p_drv); | |
113 | } | |
114 | ||
115 | ||
116 | #ifdef CONFIG_PROC_FS | |
117 | static struct proc_dir_entry *proc_pccard = NULL; | |
118 | ||
119 | static int proc_read_drivers_callback(struct device_driver *driver, void *d) | |
120 | { | |
121 | char **p = d; | |
122 | struct pcmcia_driver *p_drv = container_of(driver, | |
123 | struct pcmcia_driver, drv); | |
124 | ||
125 | *p += sprintf(*p, "%-24.24s 1 %d\n", p_drv->drv.name, | |
126 | #ifdef CONFIG_MODULE_UNLOAD | |
127 | (p_drv->owner) ? module_refcount(p_drv->owner) : 1 | |
128 | #else | |
129 | 1 | |
130 | #endif | |
131 | ); | |
132 | d = (void *) p; | |
133 | ||
134 | return 0; | |
135 | } | |
136 | ||
137 | static int proc_read_drivers(char *buf, char **start, off_t pos, | |
138 | int count, int *eof, void *data) | |
139 | { | |
140 | char *p = buf; | |
141 | ||
142 | bus_for_each_drv(&pcmcia_bus_type, NULL, | |
143 | (void *) &p, proc_read_drivers_callback); | |
144 | ||
145 | return (p - buf); | |
146 | } | |
147 | #endif | |
148 | ||
149 | /*====================================================================== | |
150 | ||
151 | These manage a ring buffer of events pending for one user process | |
152 | ||
153 | ======================================================================*/ | |
154 | ||
155 | ||
156 | static int queue_empty(user_info_t *user) | |
157 | { | |
158 | return (user->event_head == user->event_tail); | |
159 | } | |
160 | ||
161 | static event_t get_queued_event(user_info_t *user) | |
162 | { | |
163 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
164 | return user->event[user->event_tail]; | |
165 | } | |
166 | ||
167 | static void queue_event(user_info_t *user, event_t event) | |
168 | { | |
169 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
170 | if (user->event_head == user->event_tail) | |
171 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
172 | user->event[user->event_head] = event; | |
173 | } | |
174 | ||
175 | void handle_event(struct pcmcia_bus_socket *s, event_t event) | |
176 | { | |
177 | user_info_t *user; | |
178 | for (user = s->user; user; user = user->next) | |
179 | queue_event(user, event); | |
180 | wake_up_interruptible(&s->queue); | |
181 | } | |
182 | ||
183 | ||
184 | /*====================================================================== | |
185 | ||
186 | bind_request() and bind_device() are merged by now. Register_client() | |
187 | is called right at the end of bind_request(), during the driver's | |
188 | ->attach() call. Individual descriptions: | |
189 | ||
190 | bind_request() connects a socket to a particular client driver. | |
191 | It looks up the specified device ID in the list of registered | |
192 | drivers, binds it to the socket, and tries to create an instance | |
193 | of the device. unbind_request() deletes a driver instance. | |
194 | ||
195 | Bind_device() associates a device driver with a particular socket. | |
196 | It is normally called by Driver Services after it has identified | |
197 | a newly inserted card. An instance of that driver will then be | |
198 | eligible to register as a client of this socket. | |
199 | ||
200 | Register_client() uses the dev_info_t handle to match the | |
201 | caller with a socket. The driver must have already been bound | |
202 | to a socket with bind_device() -- in fact, bind_device() | |
203 | allocates the client structure that will be used. | |
204 | ||
205 | ======================================================================*/ | |
206 | ||
207 | static int bind_request(struct pcmcia_bus_socket *s, bind_info_t *bind_info) | |
208 | { | |
209 | struct pcmcia_driver *p_drv; | |
210 | struct pcmcia_device *p_dev; | |
211 | int ret = 0; | |
212 | unsigned long flags; | |
213 | ||
214 | s = pcmcia_get_bus_socket(s); | |
215 | if (!s) | |
216 | return -EINVAL; | |
217 | ||
218 | ds_dbg(2, "bind_request(%d, '%s')\n", s->parent->sock, | |
219 | (char *)bind_info->dev_info); | |
220 | ||
221 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
222 | if (!p_drv) { | |
223 | ret = -EINVAL; | |
224 | goto err_put; | |
225 | } | |
226 | ||
227 | if (!try_module_get(p_drv->owner)) { | |
228 | ret = -EINVAL; | |
229 | goto err_put_driver; | |
230 | } | |
231 | ||
232 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
233 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
234 | if (p_dev->func == bind_info->function) { | |
235 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
236 | if (p_dev->cardmgr) { | |
237 | /* if there's already a device | |
238 | * registered, and it was registered | |
239 | * by userspace before, we need to | |
240 | * return the "instance". */ | |
241 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
242 | bind_info->instance = p_dev->instance; | |
243 | ret = -EBUSY; | |
244 | goto err_put_module; | |
245 | } else { | |
246 | /* the correct driver managed to bind | |
247 | * itself magically to the correct | |
248 | * device. */ | |
249 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
250 | p_dev->cardmgr = p_drv; | |
251 | ret = 0; | |
252 | goto err_put_module; | |
253 | } | |
254 | } else if (!p_dev->dev.driver) { | |
255 | /* there's already a device available where | |
256 | * no device has been bound to yet. So we don't | |
257 | * need to register a device! */ | |
258 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
259 | goto rescan; | |
260 | } | |
261 | } | |
262 | } | |
263 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
264 | ||
265 | p_dev = pcmcia_device_add(s, bind_info->function); | |
266 | if (!p_dev) { | |
267 | ret = -EIO; | |
268 | goto err_put_module; | |
269 | } | |
270 | ||
271 | rescan: | |
272 | p_dev->cardmgr = p_drv; | |
273 | ||
274 | /* if a driver is already running, we can abort */ | |
275 | if (p_dev->dev.driver) | |
276 | goto err_put_module; | |
277 | ||
278 | /* | |
279 | * Prevent this racing with a card insertion. | |
280 | */ | |
281 | down(&s->parent->skt_sem); | |
282 | bus_rescan_devices(&pcmcia_bus_type); | |
283 | up(&s->parent->skt_sem); | |
284 | ||
285 | /* check whether the driver indeed matched. I don't care if this | |
286 | * is racy or not, because it can only happen on cardmgr access | |
287 | * paths... | |
288 | */ | |
289 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
290 | p_dev->cardmgr = NULL; | |
291 | ||
292 | err_put_module: | |
293 | module_put(p_drv->owner); | |
294 | err_put_driver: | |
295 | put_driver(&p_drv->drv); | |
296 | err_put: | |
297 | pcmcia_put_bus_socket(s); | |
298 | ||
299 | return (ret); | |
300 | } /* bind_request */ | |
301 | ||
302 | ||
303 | extern struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s); | |
304 | ||
305 | static int get_device_info(struct pcmcia_bus_socket *s, bind_info_t *bind_info, int first) | |
306 | { | |
307 | dev_node_t *node; | |
308 | struct pcmcia_device *p_dev; | |
309 | unsigned long flags; | |
310 | int ret = 0; | |
311 | ||
312 | #ifdef CONFIG_CARDBUS | |
313 | /* | |
314 | * Some unbelievably ugly code to associate the PCI cardbus | |
315 | * device and its driver with the PCMCIA "bind" information. | |
316 | */ | |
317 | { | |
318 | struct pci_bus *bus; | |
319 | ||
320 | bus = pcmcia_lookup_bus(s->parent); | |
321 | if (bus) { | |
322 | struct list_head *list; | |
323 | struct pci_dev *dev = NULL; | |
324 | ||
325 | list = bus->devices.next; | |
326 | while (list != &bus->devices) { | |
327 | struct pci_dev *pdev = pci_dev_b(list); | |
328 | list = list->next; | |
329 | ||
330 | if (first) { | |
331 | dev = pdev; | |
332 | break; | |
333 | } | |
334 | ||
335 | /* Try to handle "next" here some way? */ | |
336 | } | |
337 | if (dev && dev->driver) { | |
338 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
339 | bind_info->major = 0; | |
340 | bind_info->minor = 0; | |
341 | bind_info->next = NULL; | |
342 | return 0; | |
343 | } | |
344 | } | |
345 | } | |
346 | #endif | |
347 | ||
348 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
349 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
350 | if (p_dev->func == bind_info->function) { | |
351 | p_dev = pcmcia_get_dev(p_dev); | |
352 | if (!p_dev) | |
353 | continue; | |
354 | goto found; | |
355 | } | |
356 | } | |
357 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
358 | return -ENODEV; | |
359 | ||
360 | found: | |
361 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
362 | ||
363 | if ((!p_dev->instance) || | |
364 | (p_dev->instance->state & DEV_CONFIG_PENDING)) { | |
365 | ret = -EAGAIN; | |
366 | goto err_put; | |
367 | } | |
368 | ||
369 | if (first) | |
370 | node = p_dev->instance->dev; | |
371 | else | |
372 | for (node = p_dev->instance->dev; node; node = node->next) | |
373 | if (node == bind_info->next) | |
374 | break; | |
375 | if (!node) { | |
376 | ret = -ENODEV; | |
377 | goto err_put; | |
378 | } | |
379 | ||
380 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
381 | bind_info->major = node->major; | |
382 | bind_info->minor = node->minor; | |
383 | bind_info->next = node->next; | |
384 | ||
385 | err_put: | |
386 | pcmcia_put_dev(p_dev); | |
387 | return (ret); | |
388 | } /* get_device_info */ | |
389 | ||
390 | ||
391 | static int ds_open(struct inode *inode, struct file *file) | |
392 | { | |
393 | socket_t i = iminor(inode); | |
394 | struct pcmcia_bus_socket *s; | |
395 | user_info_t *user; | |
396 | ||
397 | ds_dbg(0, "ds_open(socket %d)\n", i); | |
398 | ||
399 | s = get_socket_info_by_nr(i); | |
400 | if (!s) | |
401 | return -ENODEV; | |
402 | s = pcmcia_get_bus_socket(s); | |
403 | if (!s) | |
404 | return -ENODEV; | |
405 | ||
406 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
407 | if (s->state & DS_SOCKET_BUSY) { | |
408 | pcmcia_put_bus_socket(s); | |
409 | return -EBUSY; | |
410 | } | |
411 | else | |
412 | s->state |= DS_SOCKET_BUSY; | |
413 | } | |
414 | ||
415 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
416 | if (!user) { | |
417 | pcmcia_put_bus_socket(s); | |
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 | ||
427 | if (s->state & DS_SOCKET_PRESENT) | |
428 | queue_event(user, CS_EVENT_CARD_INSERTION); | |
429 | return 0; | |
430 | } /* ds_open */ | |
431 | ||
432 | /*====================================================================*/ | |
433 | ||
434 | static int ds_release(struct inode *inode, struct file *file) | |
435 | { | |
436 | struct pcmcia_bus_socket *s; | |
437 | user_info_t *user, **link; | |
438 | ||
439 | ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); | |
440 | ||
441 | user = file->private_data; | |
442 | if (CHECK_USER(user)) | |
443 | goto out; | |
444 | ||
445 | s = user->socket; | |
446 | ||
447 | /* Unlink user data structure */ | |
448 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
449 | s->state &= ~DS_SOCKET_BUSY; | |
450 | } | |
451 | file->private_data = NULL; | |
452 | for (link = &s->user; *link; link = &(*link)->next) | |
453 | if (*link == user) break; | |
454 | if (link == NULL) | |
455 | goto out; | |
456 | *link = user->next; | |
457 | user->user_magic = 0; | |
458 | kfree(user); | |
459 | pcmcia_put_bus_socket(s); | |
460 | out: | |
461 | return 0; | |
462 | } /* ds_release */ | |
463 | ||
464 | /*====================================================================*/ | |
465 | ||
466 | static ssize_t ds_read(struct file *file, char __user *buf, | |
467 | size_t count, loff_t *ppos) | |
468 | { | |
469 | struct pcmcia_bus_socket *s; | |
470 | user_info_t *user; | |
471 | int ret; | |
472 | ||
473 | ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
474 | ||
475 | if (count < 4) | |
476 | return -EINVAL; | |
477 | ||
478 | user = file->private_data; | |
479 | if (CHECK_USER(user)) | |
480 | return -EIO; | |
481 | ||
482 | s = user->socket; | |
483 | if (s->state & DS_SOCKET_DEAD) | |
484 | return -EIO; | |
485 | ||
486 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); | |
487 | if (ret == 0) | |
488 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
489 | ||
490 | return ret; | |
491 | } /* ds_read */ | |
492 | ||
493 | /*====================================================================*/ | |
494 | ||
495 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
496 | size_t count, loff_t *ppos) | |
497 | { | |
498 | ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
499 | ||
500 | if (count != 4) | |
501 | return -EINVAL; | |
502 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
503 | return -EBADF; | |
504 | ||
505 | return -EIO; | |
506 | } /* ds_write */ | |
507 | ||
508 | /*====================================================================*/ | |
509 | ||
510 | /* No kernel lock - fine */ | |
511 | static u_int ds_poll(struct file *file, poll_table *wait) | |
512 | { | |
513 | struct pcmcia_bus_socket *s; | |
514 | user_info_t *user; | |
515 | ||
516 | ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_dentry->d_inode)); | |
517 | ||
518 | user = file->private_data; | |
519 | if (CHECK_USER(user)) | |
520 | return POLLERR; | |
521 | s = user->socket; | |
522 | /* | |
523 | * We don't check for a dead socket here since that | |
524 | * will send cardmgr into an endless spin. | |
525 | */ | |
526 | poll_wait(file, &s->queue, wait); | |
527 | if (!queue_empty(user)) | |
528 | return POLLIN | POLLRDNORM; | |
529 | return 0; | |
530 | } /* ds_poll */ | |
531 | ||
532 | /*====================================================================*/ | |
533 | ||
534 | extern int pcmcia_adjust_resource_info(adjust_t *adj); | |
535 | ||
536 | static int ds_ioctl(struct inode * inode, struct file * file, | |
537 | u_int cmd, u_long arg) | |
538 | { | |
539 | struct pcmcia_bus_socket *s; | |
540 | void __user *uarg = (char __user *)arg; | |
541 | u_int size; | |
542 | int ret, err; | |
543 | ds_ioctl_arg_t *buf; | |
544 | user_info_t *user; | |
545 | ||
546 | ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); | |
547 | ||
548 | user = file->private_data; | |
549 | if (CHECK_USER(user)) | |
550 | return -EIO; | |
551 | ||
552 | s = user->socket; | |
553 | if (s->state & DS_SOCKET_DEAD) | |
554 | return -EIO; | |
555 | ||
556 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
557 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; | |
558 | ||
559 | /* Permission check */ | |
560 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
561 | return -EPERM; | |
562 | ||
563 | if (cmd & IOC_IN) { | |
564 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
565 | ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); | |
566 | return -EFAULT; | |
567 | } | |
568 | } | |
569 | if (cmd & IOC_OUT) { | |
570 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
571 | ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); | |
572 | return -EFAULT; | |
573 | } | |
574 | } | |
575 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
576 | if (!buf) | |
577 | return -ENOMEM; | |
578 | ||
579 | err = ret = 0; | |
580 | ||
581 | if (cmd & IOC_IN) __copy_from_user((char *)buf, uarg, size); | |
582 | ||
583 | switch (cmd) { | |
584 | case DS_ADJUST_RESOURCE_INFO: | |
585 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
586 | break; | |
587 | case DS_GET_CARD_SERVICES_INFO: | |
588 | ret = pcmcia_get_card_services_info(&buf->servinfo); | |
589 | break; | |
590 | case DS_GET_CONFIGURATION_INFO: | |
591 | if (buf->config.Function && | |
592 | (buf->config.Function >= s->parent->functions)) | |
593 | ret = CS_BAD_ARGS; | |
594 | else | |
595 | ret = pccard_get_configuration_info(s->parent, | |
596 | buf->config.Function, &buf->config); | |
597 | break; | |
598 | case DS_GET_FIRST_TUPLE: | |
599 | down(&s->parent->skt_sem); | |
600 | pcmcia_validate_mem(s->parent); | |
601 | up(&s->parent->skt_sem); | |
602 | ret = pccard_get_first_tuple(s->parent, BIND_FN_ALL, &buf->tuple); | |
603 | break; | |
604 | case DS_GET_NEXT_TUPLE: | |
605 | ret = pccard_get_next_tuple(s->parent, BIND_FN_ALL, &buf->tuple); | |
606 | break; | |
607 | case DS_GET_TUPLE_DATA: | |
608 | buf->tuple.TupleData = buf->tuple_parse.data; | |
609 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
610 | ret = pccard_get_tuple_data(s->parent, &buf->tuple); | |
611 | break; | |
612 | case DS_PARSE_TUPLE: | |
613 | buf->tuple.TupleData = buf->tuple_parse.data; | |
614 | ret = pccard_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); | |
615 | break; | |
616 | case DS_RESET_CARD: | |
617 | ret = pccard_reset_card(s->parent); | |
618 | break; | |
619 | case DS_GET_STATUS: | |
620 | if (buf->status.Function && | |
621 | (buf->status.Function >= s->parent->functions)) | |
622 | ret = CS_BAD_ARGS; | |
623 | else | |
624 | ret = pccard_get_status(s->parent, buf->status.Function, &buf->status); | |
625 | break; | |
626 | case DS_VALIDATE_CIS: | |
627 | down(&s->parent->skt_sem); | |
628 | pcmcia_validate_mem(s->parent); | |
629 | up(&s->parent->skt_sem); | |
630 | ret = pccard_validate_cis(s->parent, BIND_FN_ALL, &buf->cisinfo); | |
631 | break; | |
632 | case DS_SUSPEND_CARD: | |
633 | ret = pcmcia_suspend_card(s->parent); | |
634 | break; | |
635 | case DS_RESUME_CARD: | |
636 | ret = pcmcia_resume_card(s->parent); | |
637 | break; | |
638 | case DS_EJECT_CARD: | |
639 | err = pcmcia_eject_card(s->parent); | |
640 | break; | |
641 | case DS_INSERT_CARD: | |
642 | err = pcmcia_insert_card(s->parent); | |
643 | break; | |
644 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
645 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
646 | err = -EPERM; | |
647 | goto free_out; | |
648 | } | |
649 | if (buf->conf_reg.Function && | |
650 | (buf->conf_reg.Function >= s->parent->functions)) | |
651 | ret = CS_BAD_ARGS; | |
652 | else | |
653 | ret = pccard_access_configuration_register(s->parent, | |
654 | buf->conf_reg.Function, &buf->conf_reg); | |
655 | break; | |
656 | case DS_GET_FIRST_REGION: | |
657 | case DS_GET_NEXT_REGION: | |
658 | case DS_BIND_MTD: | |
659 | if (!capable(CAP_SYS_ADMIN)) { | |
660 | err = -EPERM; | |
661 | goto free_out; | |
662 | } else { | |
663 | static int printed = 0; | |
664 | if (!printed) { | |
665 | printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
666 | printk(KERN_WARNING "MTD handling any more.\n"); | |
667 | printed++; | |
668 | } | |
669 | } | |
670 | err = -EINVAL; | |
671 | goto free_out; | |
672 | break; | |
673 | case DS_GET_FIRST_WINDOW: | |
674 | ret = pcmcia_get_window(s->parent, &buf->win_info.handle, 0, | |
675 | &buf->win_info.window); | |
676 | break; | |
677 | case DS_GET_NEXT_WINDOW: | |
678 | ret = pcmcia_get_window(s->parent, &buf->win_info.handle, | |
679 | buf->win_info.handle->index + 1, &buf->win_info.window); | |
680 | break; | |
681 | case DS_GET_MEM_PAGE: | |
682 | ret = pcmcia_get_mem_page(buf->win_info.handle, | |
683 | &buf->win_info.map); | |
684 | break; | |
685 | case DS_REPLACE_CIS: | |
686 | ret = pcmcia_replace_cis(s->parent, &buf->cisdump); | |
687 | break; | |
688 | case DS_BIND_REQUEST: | |
689 | if (!capable(CAP_SYS_ADMIN)) { | |
690 | err = -EPERM; | |
691 | goto free_out; | |
692 | } | |
693 | err = bind_request(s, &buf->bind_info); | |
694 | break; | |
695 | case DS_GET_DEVICE_INFO: | |
696 | err = get_device_info(s, &buf->bind_info, 1); | |
697 | break; | |
698 | case DS_GET_NEXT_DEVICE: | |
699 | err = get_device_info(s, &buf->bind_info, 0); | |
700 | break; | |
701 | case DS_UNBIND_REQUEST: | |
702 | err = 0; | |
703 | break; | |
704 | default: | |
705 | err = -EINVAL; | |
706 | } | |
707 | ||
708 | if ((err == 0) && (ret != CS_SUCCESS)) { | |
709 | ds_dbg(2, "ds_ioctl: ret = %d\n", ret); | |
710 | switch (ret) { | |
711 | case CS_BAD_SOCKET: case CS_NO_CARD: | |
712 | err = -ENODEV; break; | |
713 | case CS_BAD_ARGS: case CS_BAD_ATTRIBUTE: case CS_BAD_IRQ: | |
714 | case CS_BAD_TUPLE: | |
715 | err = -EINVAL; break; | |
716 | case CS_IN_USE: | |
717 | err = -EBUSY; break; | |
718 | case CS_OUT_OF_RESOURCE: | |
719 | err = -ENOSPC; break; | |
720 | case CS_NO_MORE_ITEMS: | |
721 | err = -ENODATA; break; | |
722 | case CS_UNSUPPORTED_FUNCTION: | |
723 | err = -ENOSYS; break; | |
724 | default: | |
725 | err = -EIO; break; | |
726 | } | |
727 | } | |
728 | ||
729 | if (cmd & IOC_OUT) { | |
730 | if (__copy_to_user(uarg, (char *)buf, size)) | |
731 | err = -EFAULT; | |
732 | } | |
733 | ||
734 | free_out: | |
735 | kfree(buf); | |
736 | return err; | |
737 | } /* ds_ioctl */ | |
738 | ||
739 | /*====================================================================*/ | |
740 | ||
741 | static struct file_operations ds_fops = { | |
742 | .owner = THIS_MODULE, | |
743 | .open = ds_open, | |
744 | .release = ds_release, | |
745 | .ioctl = ds_ioctl, | |
746 | .read = ds_read, | |
747 | .write = ds_write, | |
748 | .poll = ds_poll, | |
749 | }; | |
750 | ||
751 | void __init pcmcia_setup_ioctl(void) { | |
752 | int i; | |
753 | ||
754 | /* Set up character device for user mode clients */ | |
755 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
756 | if (i == -EBUSY) | |
757 | printk(KERN_NOTICE "unable to find a free device # for " | |
758 | "Driver Services\n"); | |
759 | else | |
760 | major_dev = i; | |
761 | ||
762 | #ifdef CONFIG_PROC_FS | |
763 | proc_pccard = proc_mkdir("pccard", proc_bus); | |
764 | if (proc_pccard) | |
765 | create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL); | |
766 | #endif | |
767 | } | |
768 | ||
769 | ||
770 | void __exit pcmcia_cleanup_ioctl(void) { | |
771 | #ifdef CONFIG_PROC_FS | |
772 | if (proc_pccard) { | |
773 | remove_proc_entry("drivers", proc_pccard); | |
774 | remove_proc_entry("pccard", proc_bus); | |
775 | } | |
776 | #endif | |
777 | if (major_dev != -1) | |
778 | unregister_chrdev(major_dev, "pcmcia"); | |
779 | } |