Commit | Line | Data |
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e7a480d2 DB |
1 | /* |
2 | * pcmcia_ioctl.c -- ioctl interface for cardmgr and cardctl | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * The initial developer of the original code is David A. Hinds | |
9 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
10 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
11 | * | |
12 | * (C) 1999 David A. Hinds | |
13 | * (C) 2003 - 2004 Dominik Brodowski | |
14 | */ | |
15 | ||
16 | /* | |
17 | * This file will go away soon. | |
18 | */ | |
19 | ||
20 | ||
3b659fb8 | 21 | #include <linux/kernel.h> |
e7a480d2 | 22 | #include <linux/module.h> |
e7a480d2 | 23 | #include <linux/init.h> |
e7a480d2 | 24 | #include <linux/major.h> |
e7a480d2 | 25 | #include <linux/errno.h> |
e7a480d2 DB |
26 | #include <linux/ioctl.h> |
27 | #include <linux/proc_fs.h> | |
28 | #include <linux/poll.h> | |
29 | #include <linux/pci.h> | |
0bec0bba | 30 | #include <linux/smp_lock.h> |
e7a480d2 | 31 | #include <linux/workqueue.h> |
e7a480d2 | 32 | |
e7a480d2 DB |
33 | #include <pcmcia/cs_types.h> |
34 | #include <pcmcia/cs.h> | |
e7a480d2 | 35 | #include <pcmcia/cistpl.h> |
4aeba013 | 36 | #include <pcmcia/cisreg.h> |
e7a480d2 DB |
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; | |
e7a480d2 DB |
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 | ||
c5023801 DB |
142 | |
143 | #ifdef CONFIG_PCMCIA_PROBE | |
144 | ||
145 | static int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) | |
146 | { | |
147 | int irq; | |
148 | u32 mask; | |
149 | ||
150 | irq = adj->resource.irq.IRQ; | |
151 | if ((irq < 0) || (irq > 15)) | |
152 | return CS_BAD_IRQ; | |
153 | ||
154 | if (adj->Action != REMOVE_MANAGED_RESOURCE) | |
155 | return 0; | |
156 | ||
157 | mask = 1 << irq; | |
158 | ||
159 | if (!(s->irq_mask & mask)) | |
160 | return 0; | |
161 | ||
162 | s->irq_mask &= ~mask; | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | #else | |
168 | ||
169 | static inline int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) { | |
170 | return CS_SUCCESS; | |
171 | } | |
172 | ||
173 | #endif | |
174 | ||
175 | static int pcmcia_adjust_resource_info(adjust_t *adj) | |
176 | { | |
177 | struct pcmcia_socket *s; | |
178 | int ret = CS_UNSUPPORTED_FUNCTION; | |
179 | unsigned long flags; | |
180 | ||
181 | down_read(&pcmcia_socket_list_rwsem); | |
182 | list_for_each_entry(s, &pcmcia_socket_list, socket_list) { | |
183 | ||
184 | if (adj->Resource == RES_IRQ) | |
185 | ret = adjust_irq(s, adj); | |
186 | ||
187 | else if (s->resource_ops->add_io) { | |
188 | unsigned long begin, end; | |
189 | ||
190 | /* you can't use the old interface if the new | |
191 | * one was used before */ | |
192 | spin_lock_irqsave(&s->lock, flags); | |
193 | if ((s->resource_setup_new) && | |
194 | !(s->resource_setup_old)) { | |
195 | spin_unlock_irqrestore(&s->lock, flags); | |
196 | continue; | |
197 | } else if (!(s->resource_setup_old)) | |
198 | s->resource_setup_old = 1; | |
199 | spin_unlock_irqrestore(&s->lock, flags); | |
200 | ||
201 | switch (adj->Resource) { | |
202 | case RES_MEMORY_RANGE: | |
203 | begin = adj->resource.memory.Base; | |
204 | end = adj->resource.memory.Base + adj->resource.memory.Size - 1; | |
205 | if (s->resource_ops->add_mem) | |
206 | ret =s->resource_ops->add_mem(s, adj->Action, begin, end); | |
207 | case RES_IO_RANGE: | |
208 | begin = adj->resource.io.BasePort; | |
209 | end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1; | |
210 | if (s->resource_ops->add_io) | |
211 | ret = s->resource_ops->add_io(s, adj->Action, begin, end); | |
212 | } | |
213 | if (!ret) { | |
214 | /* as there's no way we know this is the | |
215 | * last call to adjust_resource_info, we | |
216 | * always need to assume this is the latest | |
217 | * one... */ | |
218 | spin_lock_irqsave(&s->lock, flags); | |
219 | s->resource_setup_done = 1; | |
220 | spin_unlock_irqrestore(&s->lock, flags); | |
221 | } | |
222 | } | |
223 | } | |
224 | up_read(&pcmcia_socket_list_rwsem); | |
225 | ||
226 | return (ret); | |
227 | } | |
228 | ||
4aeba013 DB |
229 | /** pccard_get_status |
230 | * | |
231 | * Get the current socket state bits. We don't support the latched | |
232 | * SocketState yet: I haven't seen any point for it. | |
233 | */ | |
234 | ||
235 | static int pccard_get_status(struct pcmcia_socket *s, | |
236 | struct pcmcia_device *p_dev, | |
237 | cs_status_t *status) | |
238 | { | |
239 | config_t *c; | |
240 | int val; | |
241 | ||
242 | s->ops->get_status(s, &val); | |
243 | status->CardState = status->SocketState = 0; | |
244 | status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0; | |
245 | status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0; | |
246 | status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0; | |
247 | status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0; | |
248 | if (s->state & SOCKET_SUSPEND) | |
249 | status->CardState |= CS_EVENT_PM_SUSPEND; | |
250 | if (!(s->state & SOCKET_PRESENT)) | |
251 | return CS_NO_CARD; | |
252 | ||
253 | c = (p_dev) ? p_dev->function_config : NULL; | |
254 | ||
255 | if ((c != NULL) && (c->state & CONFIG_LOCKED) && | |
256 | (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) { | |
257 | u_char reg; | |
258 | if (c->CardValues & PRESENT_PIN_REPLACE) { | |
259 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, ®); | |
260 | status->CardState |= | |
261 | (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0; | |
262 | status->CardState |= | |
263 | (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0; | |
264 | status->CardState |= | |
265 | (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0; | |
266 | status->CardState |= | |
267 | (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0; | |
268 | } else { | |
269 | /* No PRR? Then assume we're always ready */ | |
270 | status->CardState |= CS_EVENT_READY_CHANGE; | |
271 | } | |
272 | if (c->CardValues & PRESENT_EXT_STATUS) { | |
273 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, ®); | |
274 | status->CardState |= | |
275 | (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0; | |
276 | } | |
277 | return CS_SUCCESS; | |
278 | } | |
279 | status->CardState |= | |
280 | (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0; | |
281 | status->CardState |= | |
282 | (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0; | |
283 | status->CardState |= | |
284 | (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0; | |
285 | status->CardState |= | |
286 | (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0; | |
287 | return CS_SUCCESS; | |
288 | } /* pccard_get_status */ | |
c5023801 | 289 | |
e7a480d2 DB |
290 | /*====================================================================== |
291 | ||
292 | These manage a ring buffer of events pending for one user process | |
293 | ||
294 | ======================================================================*/ | |
295 | ||
296 | ||
297 | static int queue_empty(user_info_t *user) | |
298 | { | |
299 | return (user->event_head == user->event_tail); | |
300 | } | |
301 | ||
302 | static event_t get_queued_event(user_info_t *user) | |
303 | { | |
304 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
305 | return user->event[user->event_tail]; | |
306 | } | |
307 | ||
308 | static void queue_event(user_info_t *user, event_t event) | |
309 | { | |
310 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
311 | if (user->event_head == user->event_tail) | |
312 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
313 | user->event[user->event_head] = event; | |
314 | } | |
315 | ||
dc109497 | 316 | void handle_event(struct pcmcia_socket *s, event_t event) |
e7a480d2 DB |
317 | { |
318 | user_info_t *user; | |
319 | for (user = s->user; user; user = user->next) | |
320 | queue_event(user, event); | |
321 | wake_up_interruptible(&s->queue); | |
322 | } | |
323 | ||
324 | ||
325 | /*====================================================================== | |
326 | ||
327 | bind_request() and bind_device() are merged by now. Register_client() | |
328 | is called right at the end of bind_request(), during the driver's | |
329 | ->attach() call. Individual descriptions: | |
330 | ||
331 | bind_request() connects a socket to a particular client driver. | |
332 | It looks up the specified device ID in the list of registered | |
333 | drivers, binds it to the socket, and tries to create an instance | |
334 | of the device. unbind_request() deletes a driver instance. | |
335 | ||
336 | Bind_device() associates a device driver with a particular socket. | |
337 | It is normally called by Driver Services after it has identified | |
338 | a newly inserted card. An instance of that driver will then be | |
339 | eligible to register as a client of this socket. | |
340 | ||
341 | Register_client() uses the dev_info_t handle to match the | |
342 | caller with a socket. The driver must have already been bound | |
343 | to a socket with bind_device() -- in fact, bind_device() | |
344 | allocates the client structure that will be used. | |
345 | ||
346 | ======================================================================*/ | |
347 | ||
dc109497 | 348 | static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) |
e7a480d2 DB |
349 | { |
350 | struct pcmcia_driver *p_drv; | |
351 | struct pcmcia_device *p_dev; | |
352 | int ret = 0; | |
353 | unsigned long flags; | |
354 | ||
dc109497 | 355 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
356 | if (!s) |
357 | return -EINVAL; | |
358 | ||
dc109497 | 359 | ds_dbg(2, "bind_request(%d, '%s')\n", s->sock, |
e7a480d2 DB |
360 | (char *)bind_info->dev_info); |
361 | ||
362 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
363 | if (!p_drv) { | |
364 | ret = -EINVAL; | |
365 | goto err_put; | |
366 | } | |
367 | ||
368 | if (!try_module_get(p_drv->owner)) { | |
369 | ret = -EINVAL; | |
370 | goto err_put_driver; | |
371 | } | |
372 | ||
373 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
374 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
375 | if (p_dev->func == bind_info->function) { | |
376 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
377 | if (p_dev->cardmgr) { | |
378 | /* if there's already a device | |
379 | * registered, and it was registered | |
380 | * by userspace before, we need to | |
381 | * return the "instance". */ | |
382 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
fd238232 | 383 | bind_info->instance = p_dev; |
e7a480d2 DB |
384 | ret = -EBUSY; |
385 | goto err_put_module; | |
386 | } else { | |
387 | /* the correct driver managed to bind | |
388 | * itself magically to the correct | |
389 | * device. */ | |
390 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
391 | p_dev->cardmgr = p_drv; | |
392 | ret = 0; | |
393 | goto err_put_module; | |
394 | } | |
395 | } else if (!p_dev->dev.driver) { | |
396 | /* there's already a device available where | |
397 | * no device has been bound to yet. So we don't | |
398 | * need to register a device! */ | |
399 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
400 | goto rescan; | |
401 | } | |
402 | } | |
403 | } | |
404 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
405 | ||
406 | p_dev = pcmcia_device_add(s, bind_info->function); | |
407 | if (!p_dev) { | |
408 | ret = -EIO; | |
409 | goto err_put_module; | |
410 | } | |
411 | ||
412 | rescan: | |
413 | p_dev->cardmgr = p_drv; | |
414 | ||
415 | /* if a driver is already running, we can abort */ | |
416 | if (p_dev->dev.driver) | |
417 | goto err_put_module; | |
418 | ||
419 | /* | |
420 | * Prevent this racing with a card insertion. | |
421 | */ | |
7fe908dd | 422 | mutex_lock(&s->skt_mutex); |
4deb7c1e | 423 | ret = bus_rescan_devices(&pcmcia_bus_type); |
7fe908dd | 424 | mutex_unlock(&s->skt_mutex); |
4deb7c1e JG |
425 | if (ret) |
426 | goto err_put_module; | |
e7a480d2 DB |
427 | |
428 | /* check whether the driver indeed matched. I don't care if this | |
429 | * is racy or not, because it can only happen on cardmgr access | |
430 | * paths... | |
431 | */ | |
432 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
433 | p_dev->cardmgr = NULL; | |
434 | ||
435 | err_put_module: | |
436 | module_put(p_drv->owner); | |
437 | err_put_driver: | |
438 | put_driver(&p_drv->drv); | |
439 | err_put: | |
dc109497 | 440 | pcmcia_put_socket(s); |
e7a480d2 DB |
441 | |
442 | return (ret); | |
443 | } /* bind_request */ | |
444 | ||
33519ddd DB |
445 | #ifdef CONFIG_CARDBUS |
446 | ||
447 | static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) | |
448 | { | |
449 | if (!s || !(s->state & SOCKET_CARDBUS)) | |
450 | return NULL; | |
e7a480d2 | 451 | |
33519ddd DB |
452 | return s->cb_dev->subordinate; |
453 | } | |
454 | #endif | |
e7a480d2 | 455 | |
dc109497 | 456 | static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) |
e7a480d2 DB |
457 | { |
458 | dev_node_t *node; | |
459 | struct pcmcia_device *p_dev; | |
e2d40963 | 460 | struct pcmcia_driver *p_drv; |
e7a480d2 DB |
461 | unsigned long flags; |
462 | int ret = 0; | |
463 | ||
464 | #ifdef CONFIG_CARDBUS | |
465 | /* | |
466 | * Some unbelievably ugly code to associate the PCI cardbus | |
467 | * device and its driver with the PCMCIA "bind" information. | |
468 | */ | |
469 | { | |
470 | struct pci_bus *bus; | |
471 | ||
dc109497 | 472 | bus = pcmcia_lookup_bus(s); |
e7a480d2 DB |
473 | if (bus) { |
474 | struct list_head *list; | |
475 | struct pci_dev *dev = NULL; | |
476 | ||
477 | list = bus->devices.next; | |
478 | while (list != &bus->devices) { | |
479 | struct pci_dev *pdev = pci_dev_b(list); | |
480 | list = list->next; | |
481 | ||
482 | if (first) { | |
483 | dev = pdev; | |
484 | break; | |
485 | } | |
486 | ||
487 | /* Try to handle "next" here some way? */ | |
488 | } | |
489 | if (dev && dev->driver) { | |
490 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
491 | bind_info->major = 0; | |
492 | bind_info->minor = 0; | |
493 | bind_info->next = NULL; | |
494 | return 0; | |
495 | } | |
496 | } | |
497 | } | |
498 | #endif | |
499 | ||
500 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
501 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
502 | if (p_dev->func == bind_info->function) { | |
503 | p_dev = pcmcia_get_dev(p_dev); | |
504 | if (!p_dev) | |
505 | continue; | |
506 | goto found; | |
507 | } | |
508 | } | |
509 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
510 | return -ENODEV; | |
511 | ||
512 | found: | |
513 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
514 | ||
e2d40963 DB |
515 | p_drv = to_pcmcia_drv(p_dev->dev.driver); |
516 | if (p_drv && !p_dev->_locked) { | |
e7a480d2 DB |
517 | ret = -EAGAIN; |
518 | goto err_put; | |
519 | } | |
520 | ||
521 | if (first) | |
fd238232 | 522 | node = p_dev->dev_node; |
e7a480d2 | 523 | else |
fd238232 | 524 | for (node = p_dev->dev_node; node; node = node->next) |
e7a480d2 DB |
525 | if (node == bind_info->next) |
526 | break; | |
527 | if (!node) { | |
528 | ret = -ENODEV; | |
529 | goto err_put; | |
530 | } | |
531 | ||
532 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
533 | bind_info->major = node->major; | |
534 | bind_info->minor = node->minor; | |
535 | bind_info->next = node->next; | |
536 | ||
537 | err_put: | |
538 | pcmcia_put_dev(p_dev); | |
539 | return (ret); | |
540 | } /* get_device_info */ | |
541 | ||
542 | ||
543 | static int ds_open(struct inode *inode, struct file *file) | |
544 | { | |
545 | socket_t i = iminor(inode); | |
dc109497 | 546 | struct pcmcia_socket *s; |
e7a480d2 | 547 | user_info_t *user; |
c352ec8a | 548 | static int warning_printed = 0; |
0bec0bba | 549 | int ret = 0; |
e7a480d2 DB |
550 | |
551 | ds_dbg(0, "ds_open(socket %d)\n", i); | |
552 | ||
0bec0bba | 553 | lock_kernel(); |
dc109497 | 554 | s = pcmcia_get_socket_by_nr(i); |
0bec0bba JC |
555 | if (!s) { |
556 | ret = -ENODEV; | |
557 | goto out; | |
558 | } | |
dc109497 | 559 | s = pcmcia_get_socket(s); |
0bec0bba JC |
560 | if (!s) { |
561 | ret = -ENODEV; | |
562 | goto out; | |
563 | } | |
e7a480d2 DB |
564 | |
565 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 566 | if (s->pcmcia_state.busy) { |
dc109497 | 567 | pcmcia_put_socket(s); |
0bec0bba JC |
568 | ret = -EBUSY; |
569 | goto out; | |
e7a480d2 DB |
570 | } |
571 | else | |
b5e43913 | 572 | s->pcmcia_state.busy = 1; |
e7a480d2 DB |
573 | } |
574 | ||
575 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
576 | if (!user) { | |
dc109497 | 577 | pcmcia_put_socket(s); |
0bec0bba JC |
578 | ret = -ENOMEM; |
579 | goto out; | |
e7a480d2 DB |
580 | } |
581 | user->event_tail = user->event_head = 0; | |
582 | user->next = s->user; | |
583 | user->user_magic = USER_MAGIC; | |
584 | user->socket = s; | |
585 | s->user = user; | |
586 | file->private_data = user; | |
587 | ||
c352ec8a DB |
588 | if (!warning_printed) { |
589 | printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " | |
73d58588 | 590 | "usage from process: %s.\n", current->comm); |
c352ec8a DB |
591 | printk(KERN_INFO "pcmcia: This interface will soon be removed from " |
592 | "the kernel; please expect breakage unless you upgrade " | |
593 | "to new tools.\n"); | |
594 | printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" | |
595 | "utils/kernel/pcmcia/pcmcia.html for details.\n"); | |
596 | warning_printed = 1; | |
597 | } | |
598 | ||
b5e43913 | 599 | if (s->pcmcia_state.present) |
e7a480d2 | 600 | queue_event(user, CS_EVENT_CARD_INSERTION); |
0bec0bba JC |
601 | out: |
602 | unlock_kernel(); | |
603 | return ret; | |
e7a480d2 DB |
604 | } /* ds_open */ |
605 | ||
606 | /*====================================================================*/ | |
607 | ||
608 | static int ds_release(struct inode *inode, struct file *file) | |
609 | { | |
dc109497 | 610 | struct pcmcia_socket *s; |
e7a480d2 DB |
611 | user_info_t *user, **link; |
612 | ||
613 | ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); | |
614 | ||
615 | user = file->private_data; | |
616 | if (CHECK_USER(user)) | |
617 | goto out; | |
618 | ||
619 | s = user->socket; | |
620 | ||
621 | /* Unlink user data structure */ | |
622 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 623 | s->pcmcia_state.busy = 0; |
e7a480d2 DB |
624 | } |
625 | file->private_data = NULL; | |
626 | for (link = &s->user; *link; link = &(*link)->next) | |
627 | if (*link == user) break; | |
628 | if (link == NULL) | |
629 | goto out; | |
630 | *link = user->next; | |
631 | user->user_magic = 0; | |
632 | kfree(user); | |
dc109497 | 633 | pcmcia_put_socket(s); |
e7a480d2 DB |
634 | out: |
635 | return 0; | |
636 | } /* ds_release */ | |
637 | ||
638 | /*====================================================================*/ | |
639 | ||
640 | static ssize_t ds_read(struct file *file, char __user *buf, | |
641 | size_t count, loff_t *ppos) | |
642 | { | |
dc109497 | 643 | struct pcmcia_socket *s; |
e7a480d2 DB |
644 | user_info_t *user; |
645 | int ret; | |
646 | ||
40fad04b | 647 | ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
648 | |
649 | if (count < 4) | |
650 | return -EINVAL; | |
651 | ||
652 | user = file->private_data; | |
653 | if (CHECK_USER(user)) | |
654 | return -EIO; | |
655 | ||
656 | s = user->socket; | |
b5e43913 | 657 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
658 | return -EIO; |
659 | ||
660 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); | |
661 | if (ret == 0) | |
662 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
663 | ||
664 | return ret; | |
665 | } /* ds_read */ | |
666 | ||
667 | /*====================================================================*/ | |
668 | ||
669 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
670 | size_t count, loff_t *ppos) | |
671 | { | |
40fad04b | 672 | ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
673 | |
674 | if (count != 4) | |
675 | return -EINVAL; | |
676 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
677 | return -EBADF; | |
678 | ||
679 | return -EIO; | |
680 | } /* ds_write */ | |
681 | ||
682 | /*====================================================================*/ | |
683 | ||
684 | /* No kernel lock - fine */ | |
685 | static u_int ds_poll(struct file *file, poll_table *wait) | |
686 | { | |
dc109497 | 687 | struct pcmcia_socket *s; |
e7a480d2 DB |
688 | user_info_t *user; |
689 | ||
40fad04b | 690 | ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
691 | |
692 | user = file->private_data; | |
693 | if (CHECK_USER(user)) | |
694 | return POLLERR; | |
695 | s = user->socket; | |
696 | /* | |
697 | * We don't check for a dead socket here since that | |
698 | * will send cardmgr into an endless spin. | |
699 | */ | |
700 | poll_wait(file, &s->queue, wait); | |
701 | if (!queue_empty(user)) | |
702 | return POLLIN | POLLRDNORM; | |
703 | return 0; | |
704 | } /* ds_poll */ | |
705 | ||
706 | /*====================================================================*/ | |
707 | ||
e7a480d2 DB |
708 | static int ds_ioctl(struct inode * inode, struct file * file, |
709 | u_int cmd, u_long arg) | |
710 | { | |
dc109497 | 711 | struct pcmcia_socket *s; |
e7a480d2 DB |
712 | void __user *uarg = (char __user *)arg; |
713 | u_int size; | |
714 | int ret, err; | |
715 | ds_ioctl_arg_t *buf; | |
716 | user_info_t *user; | |
717 | ||
718 | ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); | |
719 | ||
720 | user = file->private_data; | |
721 | if (CHECK_USER(user)) | |
722 | return -EIO; | |
723 | ||
724 | s = user->socket; | |
b5e43913 | 725 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
726 | return -EIO; |
727 | ||
728 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
729 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; | |
730 | ||
731 | /* Permission check */ | |
732 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
733 | return -EPERM; | |
734 | ||
735 | if (cmd & IOC_IN) { | |
736 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
737 | ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); | |
738 | return -EFAULT; | |
739 | } | |
740 | } | |
741 | if (cmd & IOC_OUT) { | |
742 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
743 | ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); | |
744 | return -EFAULT; | |
745 | } | |
746 | } | |
747 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
748 | if (!buf) | |
749 | return -ENOMEM; | |
750 | ||
751 | err = ret = 0; | |
752 | ||
9374074f DB |
753 | if (cmd & IOC_IN) { |
754 | if (__copy_from_user((char *)buf, uarg, size)) { | |
755 | err = -EFAULT; | |
756 | goto free_out; | |
757 | } | |
758 | } | |
e7a480d2 DB |
759 | |
760 | switch (cmd) { | |
761 | case DS_ADJUST_RESOURCE_INFO: | |
762 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
763 | break; | |
e7a480d2 DB |
764 | case DS_GET_CONFIGURATION_INFO: |
765 | if (buf->config.Function && | |
dc109497 | 766 | (buf->config.Function >= s->functions)) |
e7a480d2 | 767 | ret = CS_BAD_ARGS; |
855cdf13 DB |
768 | else { |
769 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); | |
f47ad214 DR |
770 | ret = pccard_get_configuration_info(s, p_dev, &buf->config); |
771 | pcmcia_put_dev(p_dev); | |
855cdf13 | 772 | } |
e7a480d2 DB |
773 | break; |
774 | case DS_GET_FIRST_TUPLE: | |
7fe908dd | 775 | mutex_lock(&s->skt_mutex); |
dc109497 | 776 | pcmcia_validate_mem(s); |
7fe908dd | 777 | mutex_unlock(&s->skt_mutex); |
dc109497 | 778 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
779 | break; |
780 | case DS_GET_NEXT_TUPLE: | |
dc109497 | 781 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
782 | break; |
783 | case DS_GET_TUPLE_DATA: | |
784 | buf->tuple.TupleData = buf->tuple_parse.data; | |
785 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
dc109497 | 786 | ret = pccard_get_tuple_data(s, &buf->tuple); |
e7a480d2 DB |
787 | break; |
788 | case DS_PARSE_TUPLE: | |
789 | buf->tuple.TupleData = buf->tuple_parse.data; | |
790 | ret = pccard_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); | |
791 | break; | |
792 | case DS_RESET_CARD: | |
dc109497 | 793 | ret = pccard_reset_card(s); |
e7a480d2 DB |
794 | break; |
795 | case DS_GET_STATUS: | |
855cdf13 DB |
796 | if (buf->status.Function && |
797 | (buf->status.Function >= s->functions)) | |
798 | ret = CS_BAD_ARGS; | |
799 | else { | |
800 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); | |
f47ad214 DR |
801 | ret = pccard_get_status(s, p_dev, &buf->status); |
802 | pcmcia_put_dev(p_dev); | |
855cdf13 DB |
803 | } |
804 | break; | |
e7a480d2 | 805 | case DS_VALIDATE_CIS: |
7fe908dd | 806 | mutex_lock(&s->skt_mutex); |
dc109497 | 807 | pcmcia_validate_mem(s); |
7fe908dd | 808 | mutex_unlock(&s->skt_mutex); |
c5081d5f | 809 | ret = pccard_validate_cis(s, BIND_FN_ALL, &buf->cisinfo.Chains); |
e7a480d2 DB |
810 | break; |
811 | case DS_SUSPEND_CARD: | |
dc109497 | 812 | ret = pcmcia_suspend_card(s); |
e7a480d2 DB |
813 | break; |
814 | case DS_RESUME_CARD: | |
dc109497 | 815 | ret = pcmcia_resume_card(s); |
e7a480d2 DB |
816 | break; |
817 | case DS_EJECT_CARD: | |
dc109497 | 818 | err = pcmcia_eject_card(s); |
e7a480d2 DB |
819 | break; |
820 | case DS_INSERT_CARD: | |
dc109497 | 821 | err = pcmcia_insert_card(s); |
e7a480d2 DB |
822 | break; |
823 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
824 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
825 | err = -EPERM; | |
826 | goto free_out; | |
827 | } | |
855cdf13 DB |
828 | |
829 | ret = CS_BAD_ARGS; | |
830 | ||
831 | if (!(buf->conf_reg.Function && | |
832 | (buf->conf_reg.Function >= s->functions))) { | |
833 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); | |
73d58588 | 834 | if (p_dev) { |
855cdf13 | 835 | ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); |
73d58588 BH |
836 | pcmcia_put_dev(p_dev); |
837 | } | |
855cdf13 | 838 | } |
e7a480d2 DB |
839 | break; |
840 | case DS_GET_FIRST_REGION: | |
841 | case DS_GET_NEXT_REGION: | |
842 | case DS_BIND_MTD: | |
843 | if (!capable(CAP_SYS_ADMIN)) { | |
844 | err = -EPERM; | |
845 | goto free_out; | |
846 | } else { | |
847 | static int printed = 0; | |
848 | if (!printed) { | |
849 | printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
850 | printk(KERN_WARNING "MTD handling any more.\n"); | |
851 | printed++; | |
852 | } | |
853 | } | |
854 | err = -EINVAL; | |
855 | goto free_out; | |
856 | break; | |
857 | case DS_GET_FIRST_WINDOW: | |
dc109497 | 858 | ret = pcmcia_get_window(s, &buf->win_info.handle, 0, |
e7a480d2 DB |
859 | &buf->win_info.window); |
860 | break; | |
861 | case DS_GET_NEXT_WINDOW: | |
dc109497 | 862 | ret = pcmcia_get_window(s, &buf->win_info.handle, |
e7a480d2 DB |
863 | buf->win_info.handle->index + 1, &buf->win_info.window); |
864 | break; | |
865 | case DS_GET_MEM_PAGE: | |
866 | ret = pcmcia_get_mem_page(buf->win_info.handle, | |
867 | &buf->win_info.map); | |
868 | break; | |
869 | case DS_REPLACE_CIS: | |
dc109497 | 870 | ret = pcmcia_replace_cis(s, &buf->cisdump); |
e7a480d2 DB |
871 | break; |
872 | case DS_BIND_REQUEST: | |
873 | if (!capable(CAP_SYS_ADMIN)) { | |
874 | err = -EPERM; | |
875 | goto free_out; | |
876 | } | |
877 | err = bind_request(s, &buf->bind_info); | |
878 | break; | |
879 | case DS_GET_DEVICE_INFO: | |
880 | err = get_device_info(s, &buf->bind_info, 1); | |
881 | break; | |
882 | case DS_GET_NEXT_DEVICE: | |
883 | err = get_device_info(s, &buf->bind_info, 0); | |
884 | break; | |
885 | case DS_UNBIND_REQUEST: | |
886 | err = 0; | |
887 | break; | |
888 | default: | |
889 | err = -EINVAL; | |
890 | } | |
891 | ||
892 | if ((err == 0) && (ret != CS_SUCCESS)) { | |
893 | ds_dbg(2, "ds_ioctl: ret = %d\n", ret); | |
894 | switch (ret) { | |
895 | case CS_BAD_SOCKET: case CS_NO_CARD: | |
896 | err = -ENODEV; break; | |
897 | case CS_BAD_ARGS: case CS_BAD_ATTRIBUTE: case CS_BAD_IRQ: | |
898 | case CS_BAD_TUPLE: | |
899 | err = -EINVAL; break; | |
900 | case CS_IN_USE: | |
901 | err = -EBUSY; break; | |
902 | case CS_OUT_OF_RESOURCE: | |
903 | err = -ENOSPC; break; | |
904 | case CS_NO_MORE_ITEMS: | |
905 | err = -ENODATA; break; | |
906 | case CS_UNSUPPORTED_FUNCTION: | |
907 | err = -ENOSYS; break; | |
908 | default: | |
909 | err = -EIO; break; | |
910 | } | |
911 | } | |
912 | ||
913 | if (cmd & IOC_OUT) { | |
914 | if (__copy_to_user(uarg, (char *)buf, size)) | |
915 | err = -EFAULT; | |
916 | } | |
917 | ||
918 | free_out: | |
919 | kfree(buf); | |
920 | return err; | |
921 | } /* ds_ioctl */ | |
922 | ||
923 | /*====================================================================*/ | |
924 | ||
d54b1fdb | 925 | static const struct file_operations ds_fops = { |
e7a480d2 DB |
926 | .owner = THIS_MODULE, |
927 | .open = ds_open, | |
928 | .release = ds_release, | |
929 | .ioctl = ds_ioctl, | |
930 | .read = ds_read, | |
931 | .write = ds_write, | |
932 | .poll = ds_poll, | |
933 | }; | |
934 | ||
935 | void __init pcmcia_setup_ioctl(void) { | |
936 | int i; | |
937 | ||
938 | /* Set up character device for user mode clients */ | |
939 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
1a8ceafc | 940 | if (i < 0) |
e7a480d2 | 941 | printk(KERN_NOTICE "unable to find a free device # for " |
1a8ceafc | 942 | "Driver Services (error=%d)\n", i); |
e7a480d2 DB |
943 | else |
944 | major_dev = i; | |
945 | ||
946 | #ifdef CONFIG_PROC_FS | |
97094dcf | 947 | proc_pccard = proc_mkdir("bus/pccard", NULL); |
e7a480d2 DB |
948 | if (proc_pccard) |
949 | create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL); | |
950 | #endif | |
951 | } | |
952 | ||
953 | ||
954 | void __exit pcmcia_cleanup_ioctl(void) { | |
955 | #ifdef CONFIG_PROC_FS | |
956 | if (proc_pccard) { | |
957 | remove_proc_entry("drivers", proc_pccard); | |
97094dcf | 958 | remove_proc_entry("bus/pccard", NULL); |
e7a480d2 DB |
959 | } |
960 | #endif | |
961 | if (major_dev != -1) | |
962 | unregister_chrdev(major_dev, "pcmcia"); | |
963 | } |