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" | |
e7a480d2 DB |
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 | ||
7d16b658 | 60 | #ifdef CONFIG_PCMCIA_DEBUG |
e7a480d2 | 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 | ||
c5023801 DB |
141 | |
142 | #ifdef CONFIG_PCMCIA_PROBE | |
143 | ||
144 | static int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) | |
145 | { | |
146 | int irq; | |
147 | u32 mask; | |
148 | ||
149 | irq = adj->resource.irq.IRQ; | |
150 | if ((irq < 0) || (irq > 15)) | |
69ba4433 | 151 | return -EINVAL; |
c5023801 DB |
152 | |
153 | if (adj->Action != REMOVE_MANAGED_RESOURCE) | |
154 | return 0; | |
155 | ||
156 | mask = 1 << irq; | |
157 | ||
158 | if (!(s->irq_mask & mask)) | |
159 | return 0; | |
160 | ||
161 | s->irq_mask &= ~mask; | |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
166 | #else | |
167 | ||
168 | static inline int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) { | |
4c89e88b | 169 | return 0; |
c5023801 DB |
170 | } |
171 | ||
172 | #endif | |
173 | ||
174 | static int pcmcia_adjust_resource_info(adjust_t *adj) | |
175 | { | |
176 | struct pcmcia_socket *s; | |
de6405e9 | 177 | int ret = -ENOSYS; |
c5023801 DB |
178 | unsigned long flags; |
179 | ||
180 | down_read(&pcmcia_socket_list_rwsem); | |
181 | list_for_each_entry(s, &pcmcia_socket_list, socket_list) { | |
182 | ||
183 | if (adj->Resource == RES_IRQ) | |
184 | ret = adjust_irq(s, adj); | |
185 | ||
186 | else if (s->resource_ops->add_io) { | |
187 | unsigned long begin, end; | |
188 | ||
189 | /* you can't use the old interface if the new | |
190 | * one was used before */ | |
191 | spin_lock_irqsave(&s->lock, flags); | |
192 | if ((s->resource_setup_new) && | |
193 | !(s->resource_setup_old)) { | |
194 | spin_unlock_irqrestore(&s->lock, flags); | |
195 | continue; | |
196 | } else if (!(s->resource_setup_old)) | |
197 | s->resource_setup_old = 1; | |
198 | spin_unlock_irqrestore(&s->lock, flags); | |
199 | ||
200 | switch (adj->Resource) { | |
201 | case RES_MEMORY_RANGE: | |
202 | begin = adj->resource.memory.Base; | |
203 | end = adj->resource.memory.Base + adj->resource.memory.Size - 1; | |
204 | if (s->resource_ops->add_mem) | |
205 | ret =s->resource_ops->add_mem(s, adj->Action, begin, end); | |
206 | case RES_IO_RANGE: | |
207 | begin = adj->resource.io.BasePort; | |
208 | end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1; | |
209 | if (s->resource_ops->add_io) | |
210 | ret = s->resource_ops->add_io(s, adj->Action, begin, end); | |
211 | } | |
212 | if (!ret) { | |
213 | /* as there's no way we know this is the | |
214 | * last call to adjust_resource_info, we | |
215 | * always need to assume this is the latest | |
216 | * one... */ | |
217 | spin_lock_irqsave(&s->lock, flags); | |
218 | s->resource_setup_done = 1; | |
219 | spin_unlock_irqrestore(&s->lock, flags); | |
220 | } | |
221 | } | |
222 | } | |
223 | up_read(&pcmcia_socket_list_rwsem); | |
224 | ||
225 | return (ret); | |
226 | } | |
227 | ||
4aeba013 DB |
228 | /** pccard_get_status |
229 | * | |
230 | * Get the current socket state bits. We don't support the latched | |
231 | * SocketState yet: I haven't seen any point for it. | |
232 | */ | |
233 | ||
234 | static int pccard_get_status(struct pcmcia_socket *s, | |
235 | struct pcmcia_device *p_dev, | |
236 | cs_status_t *status) | |
237 | { | |
238 | config_t *c; | |
239 | int val; | |
240 | ||
241 | s->ops->get_status(s, &val); | |
242 | status->CardState = status->SocketState = 0; | |
243 | status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0; | |
244 | status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0; | |
245 | status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0; | |
246 | status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0; | |
247 | if (s->state & SOCKET_SUSPEND) | |
248 | status->CardState |= CS_EVENT_PM_SUSPEND; | |
249 | if (!(s->state & SOCKET_PRESENT)) | |
3939c1ef | 250 | return -ENODEV; |
4aeba013 DB |
251 | |
252 | c = (p_dev) ? p_dev->function_config : NULL; | |
253 | ||
254 | if ((c != NULL) && (c->state & CONFIG_LOCKED) && | |
255 | (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) { | |
256 | u_char reg; | |
257 | if (c->CardValues & PRESENT_PIN_REPLACE) { | |
258 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, ®); | |
259 | status->CardState |= | |
260 | (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0; | |
261 | status->CardState |= | |
262 | (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0; | |
263 | status->CardState |= | |
264 | (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0; | |
265 | status->CardState |= | |
266 | (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0; | |
267 | } else { | |
268 | /* No PRR? Then assume we're always ready */ | |
269 | status->CardState |= CS_EVENT_READY_CHANGE; | |
270 | } | |
271 | if (c->CardValues & PRESENT_EXT_STATUS) { | |
272 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, ®); | |
273 | status->CardState |= | |
274 | (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0; | |
275 | } | |
4c89e88b | 276 | return 0; |
4aeba013 DB |
277 | } |
278 | status->CardState |= | |
279 | (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0; | |
280 | status->CardState |= | |
281 | (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0; | |
282 | status->CardState |= | |
283 | (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0; | |
284 | status->CardState |= | |
285 | (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0; | |
4c89e88b | 286 | return 0; |
4aeba013 | 287 | } /* pccard_get_status */ |
c5023801 | 288 | |
64f34642 DB |
289 | int pccard_get_configuration_info(struct pcmcia_socket *s, |
290 | struct pcmcia_device *p_dev, | |
291 | config_info_t *config) | |
292 | { | |
293 | config_t *c; | |
294 | ||
295 | if (!(s->state & SOCKET_PRESENT)) | |
3939c1ef | 296 | return -ENODEV; |
64f34642 DB |
297 | |
298 | ||
299 | #ifdef CONFIG_CARDBUS | |
300 | if (s->state & SOCKET_CARDBUS) { | |
301 | memset(config, 0, sizeof(config_info_t)); | |
302 | config->Vcc = s->socket.Vcc; | |
303 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
304 | config->Option = s->cb_dev->subordinate->number; | |
305 | if (s->state & SOCKET_CARDBUS_CONFIG) { | |
306 | config->Attributes = CONF_VALID_CLIENT; | |
307 | config->IntType = INT_CARDBUS; | |
308 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
309 | if (config->AssignedIRQ) | |
310 | config->Attributes |= CONF_ENABLE_IRQ; | |
311 | if (s->io[0].res) { | |
312 | config->BasePort1 = s->io[0].res->start; | |
313 | config->NumPorts1 = s->io[0].res->end - | |
314 | config->BasePort1 + 1; | |
315 | } | |
316 | } | |
4c89e88b | 317 | return 0; |
64f34642 DB |
318 | } |
319 | #endif | |
320 | ||
321 | if (p_dev) { | |
322 | c = p_dev->function_config; | |
323 | config->Function = p_dev->func; | |
324 | } else { | |
325 | c = NULL; | |
326 | config->Function = 0; | |
327 | } | |
328 | ||
329 | if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { | |
330 | config->Attributes = 0; | |
331 | config->Vcc = s->socket.Vcc; | |
332 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
4c89e88b | 333 | return 0; |
64f34642 DB |
334 | } |
335 | ||
336 | config->Attributes = c->Attributes | CONF_VALID_CLIENT; | |
337 | config->Vcc = s->socket.Vcc; | |
338 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
339 | config->IntType = c->IntType; | |
340 | config->ConfigBase = c->ConfigBase; | |
341 | config->Status = c->Status; | |
342 | config->Pin = c->Pin; | |
343 | config->Copy = c->Copy; | |
344 | config->Option = c->Option; | |
345 | config->ExtStatus = c->ExtStatus; | |
346 | config->Present = config->CardValues = c->CardValues; | |
347 | config->IRQAttributes = c->irq.Attributes; | |
348 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
349 | config->BasePort1 = c->io.BasePort1; | |
350 | config->NumPorts1 = c->io.NumPorts1; | |
351 | config->Attributes1 = c->io.Attributes1; | |
352 | config->BasePort2 = c->io.BasePort2; | |
353 | config->NumPorts2 = c->io.NumPorts2; | |
354 | config->Attributes2 = c->io.Attributes2; | |
355 | config->IOAddrLines = c->io.IOAddrLines; | |
356 | ||
4c89e88b | 357 | return 0; |
64f34642 DB |
358 | } /* pccard_get_configuration_info */ |
359 | ||
360 | ||
e7a480d2 DB |
361 | /*====================================================================== |
362 | ||
363 | These manage a ring buffer of events pending for one user process | |
364 | ||
365 | ======================================================================*/ | |
366 | ||
367 | ||
368 | static int queue_empty(user_info_t *user) | |
369 | { | |
370 | return (user->event_head == user->event_tail); | |
371 | } | |
372 | ||
373 | static event_t get_queued_event(user_info_t *user) | |
374 | { | |
375 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
376 | return user->event[user->event_tail]; | |
377 | } | |
378 | ||
379 | static void queue_event(user_info_t *user, event_t event) | |
380 | { | |
381 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
382 | if (user->event_head == user->event_tail) | |
383 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
384 | user->event[user->event_head] = event; | |
385 | } | |
386 | ||
dc109497 | 387 | void handle_event(struct pcmcia_socket *s, event_t event) |
e7a480d2 DB |
388 | { |
389 | user_info_t *user; | |
390 | for (user = s->user; user; user = user->next) | |
391 | queue_event(user, event); | |
392 | wake_up_interruptible(&s->queue); | |
393 | } | |
394 | ||
395 | ||
396 | /*====================================================================== | |
397 | ||
398 | bind_request() and bind_device() are merged by now. Register_client() | |
399 | is called right at the end of bind_request(), during the driver's | |
400 | ->attach() call. Individual descriptions: | |
401 | ||
402 | bind_request() connects a socket to a particular client driver. | |
403 | It looks up the specified device ID in the list of registered | |
404 | drivers, binds it to the socket, and tries to create an instance | |
405 | of the device. unbind_request() deletes a driver instance. | |
406 | ||
407 | Bind_device() associates a device driver with a particular socket. | |
408 | It is normally called by Driver Services after it has identified | |
409 | a newly inserted card. An instance of that driver will then be | |
410 | eligible to register as a client of this socket. | |
411 | ||
412 | Register_client() uses the dev_info_t handle to match the | |
413 | caller with a socket. The driver must have already been bound | |
414 | to a socket with bind_device() -- in fact, bind_device() | |
415 | allocates the client structure that will be used. | |
416 | ||
417 | ======================================================================*/ | |
418 | ||
dc109497 | 419 | static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) |
e7a480d2 DB |
420 | { |
421 | struct pcmcia_driver *p_drv; | |
422 | struct pcmcia_device *p_dev; | |
423 | int ret = 0; | |
424 | unsigned long flags; | |
425 | ||
dc109497 | 426 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
427 | if (!s) |
428 | return -EINVAL; | |
429 | ||
dc109497 | 430 | ds_dbg(2, "bind_request(%d, '%s')\n", s->sock, |
e7a480d2 DB |
431 | (char *)bind_info->dev_info); |
432 | ||
433 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
434 | if (!p_drv) { | |
435 | ret = -EINVAL; | |
436 | goto err_put; | |
437 | } | |
438 | ||
439 | if (!try_module_get(p_drv->owner)) { | |
440 | ret = -EINVAL; | |
441 | goto err_put_driver; | |
442 | } | |
443 | ||
444 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
445 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
446 | if (p_dev->func == bind_info->function) { | |
447 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
448 | if (p_dev->cardmgr) { | |
449 | /* if there's already a device | |
450 | * registered, and it was registered | |
451 | * by userspace before, we need to | |
452 | * return the "instance". */ | |
453 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
fd238232 | 454 | bind_info->instance = p_dev; |
e7a480d2 DB |
455 | ret = -EBUSY; |
456 | goto err_put_module; | |
457 | } else { | |
458 | /* the correct driver managed to bind | |
459 | * itself magically to the correct | |
460 | * device. */ | |
461 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
462 | p_dev->cardmgr = p_drv; | |
463 | ret = 0; | |
464 | goto err_put_module; | |
465 | } | |
466 | } else if (!p_dev->dev.driver) { | |
467 | /* there's already a device available where | |
468 | * no device has been bound to yet. So we don't | |
469 | * need to register a device! */ | |
470 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
471 | goto rescan; | |
472 | } | |
473 | } | |
474 | } | |
475 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
476 | ||
477 | p_dev = pcmcia_device_add(s, bind_info->function); | |
478 | if (!p_dev) { | |
479 | ret = -EIO; | |
480 | goto err_put_module; | |
481 | } | |
482 | ||
483 | rescan: | |
484 | p_dev->cardmgr = p_drv; | |
485 | ||
486 | /* if a driver is already running, we can abort */ | |
487 | if (p_dev->dev.driver) | |
488 | goto err_put_module; | |
489 | ||
490 | /* | |
491 | * Prevent this racing with a card insertion. | |
492 | */ | |
7fe908dd | 493 | mutex_lock(&s->skt_mutex); |
4deb7c1e | 494 | ret = bus_rescan_devices(&pcmcia_bus_type); |
7fe908dd | 495 | mutex_unlock(&s->skt_mutex); |
4deb7c1e JG |
496 | if (ret) |
497 | goto err_put_module; | |
e7a480d2 DB |
498 | |
499 | /* check whether the driver indeed matched. I don't care if this | |
500 | * is racy or not, because it can only happen on cardmgr access | |
501 | * paths... | |
502 | */ | |
503 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
504 | p_dev->cardmgr = NULL; | |
505 | ||
506 | err_put_module: | |
507 | module_put(p_drv->owner); | |
508 | err_put_driver: | |
509 | put_driver(&p_drv->drv); | |
510 | err_put: | |
dc109497 | 511 | pcmcia_put_socket(s); |
e7a480d2 DB |
512 | |
513 | return (ret); | |
514 | } /* bind_request */ | |
515 | ||
33519ddd DB |
516 | #ifdef CONFIG_CARDBUS |
517 | ||
518 | static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) | |
519 | { | |
520 | if (!s || !(s->state & SOCKET_CARDBUS)) | |
521 | return NULL; | |
e7a480d2 | 522 | |
33519ddd DB |
523 | return s->cb_dev->subordinate; |
524 | } | |
525 | #endif | |
e7a480d2 | 526 | |
dc109497 | 527 | static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) |
e7a480d2 DB |
528 | { |
529 | dev_node_t *node; | |
530 | struct pcmcia_device *p_dev; | |
e2d40963 | 531 | struct pcmcia_driver *p_drv; |
e7a480d2 DB |
532 | unsigned long flags; |
533 | int ret = 0; | |
534 | ||
535 | #ifdef CONFIG_CARDBUS | |
536 | /* | |
537 | * Some unbelievably ugly code to associate the PCI cardbus | |
538 | * device and its driver with the PCMCIA "bind" information. | |
539 | */ | |
540 | { | |
541 | struct pci_bus *bus; | |
542 | ||
dc109497 | 543 | bus = pcmcia_lookup_bus(s); |
e7a480d2 DB |
544 | if (bus) { |
545 | struct list_head *list; | |
546 | struct pci_dev *dev = NULL; | |
547 | ||
548 | list = bus->devices.next; | |
549 | while (list != &bus->devices) { | |
550 | struct pci_dev *pdev = pci_dev_b(list); | |
551 | list = list->next; | |
552 | ||
553 | if (first) { | |
554 | dev = pdev; | |
555 | break; | |
556 | } | |
557 | ||
558 | /* Try to handle "next" here some way? */ | |
559 | } | |
560 | if (dev && dev->driver) { | |
561 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
562 | bind_info->major = 0; | |
563 | bind_info->minor = 0; | |
564 | bind_info->next = NULL; | |
565 | return 0; | |
566 | } | |
567 | } | |
568 | } | |
569 | #endif | |
570 | ||
571 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
572 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
573 | if (p_dev->func == bind_info->function) { | |
574 | p_dev = pcmcia_get_dev(p_dev); | |
575 | if (!p_dev) | |
576 | continue; | |
577 | goto found; | |
578 | } | |
579 | } | |
580 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
581 | return -ENODEV; | |
582 | ||
583 | found: | |
584 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
585 | ||
e2d40963 DB |
586 | p_drv = to_pcmcia_drv(p_dev->dev.driver); |
587 | if (p_drv && !p_dev->_locked) { | |
e7a480d2 DB |
588 | ret = -EAGAIN; |
589 | goto err_put; | |
590 | } | |
591 | ||
592 | if (first) | |
fd238232 | 593 | node = p_dev->dev_node; |
e7a480d2 | 594 | else |
fd238232 | 595 | for (node = p_dev->dev_node; node; node = node->next) |
e7a480d2 DB |
596 | if (node == bind_info->next) |
597 | break; | |
598 | if (!node) { | |
599 | ret = -ENODEV; | |
600 | goto err_put; | |
601 | } | |
602 | ||
603 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
604 | bind_info->major = node->major; | |
605 | bind_info->minor = node->minor; | |
606 | bind_info->next = node->next; | |
607 | ||
608 | err_put: | |
609 | pcmcia_put_dev(p_dev); | |
610 | return (ret); | |
611 | } /* get_device_info */ | |
612 | ||
613 | ||
614 | static int ds_open(struct inode *inode, struct file *file) | |
615 | { | |
616 | socket_t i = iminor(inode); | |
dc109497 | 617 | struct pcmcia_socket *s; |
e7a480d2 | 618 | user_info_t *user; |
c352ec8a | 619 | static int warning_printed = 0; |
0bec0bba | 620 | int ret = 0; |
e7a480d2 DB |
621 | |
622 | ds_dbg(0, "ds_open(socket %d)\n", i); | |
623 | ||
0bec0bba | 624 | lock_kernel(); |
dc109497 | 625 | s = pcmcia_get_socket_by_nr(i); |
0bec0bba JC |
626 | if (!s) { |
627 | ret = -ENODEV; | |
628 | goto out; | |
629 | } | |
dc109497 | 630 | s = pcmcia_get_socket(s); |
0bec0bba JC |
631 | if (!s) { |
632 | ret = -ENODEV; | |
633 | goto out; | |
634 | } | |
e7a480d2 DB |
635 | |
636 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 637 | if (s->pcmcia_state.busy) { |
dc109497 | 638 | pcmcia_put_socket(s); |
0bec0bba JC |
639 | ret = -EBUSY; |
640 | goto out; | |
e7a480d2 DB |
641 | } |
642 | else | |
b5e43913 | 643 | s->pcmcia_state.busy = 1; |
e7a480d2 DB |
644 | } |
645 | ||
646 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
647 | if (!user) { | |
dc109497 | 648 | pcmcia_put_socket(s); |
0bec0bba JC |
649 | ret = -ENOMEM; |
650 | goto out; | |
e7a480d2 DB |
651 | } |
652 | user->event_tail = user->event_head = 0; | |
653 | user->next = s->user; | |
654 | user->user_magic = USER_MAGIC; | |
655 | user->socket = s; | |
656 | s->user = user; | |
657 | file->private_data = user; | |
658 | ||
c352ec8a DB |
659 | if (!warning_printed) { |
660 | printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " | |
73d58588 | 661 | "usage from process: %s.\n", current->comm); |
c352ec8a DB |
662 | printk(KERN_INFO "pcmcia: This interface will soon be removed from " |
663 | "the kernel; please expect breakage unless you upgrade " | |
664 | "to new tools.\n"); | |
665 | printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" | |
666 | "utils/kernel/pcmcia/pcmcia.html for details.\n"); | |
667 | warning_printed = 1; | |
668 | } | |
669 | ||
b5e43913 | 670 | if (s->pcmcia_state.present) |
e7a480d2 | 671 | queue_event(user, CS_EVENT_CARD_INSERTION); |
0bec0bba JC |
672 | out: |
673 | unlock_kernel(); | |
674 | return ret; | |
e7a480d2 DB |
675 | } /* ds_open */ |
676 | ||
677 | /*====================================================================*/ | |
678 | ||
679 | static int ds_release(struct inode *inode, struct file *file) | |
680 | { | |
dc109497 | 681 | struct pcmcia_socket *s; |
e7a480d2 DB |
682 | user_info_t *user, **link; |
683 | ||
684 | ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); | |
685 | ||
686 | user = file->private_data; | |
687 | if (CHECK_USER(user)) | |
688 | goto out; | |
689 | ||
690 | s = user->socket; | |
691 | ||
692 | /* Unlink user data structure */ | |
693 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 694 | s->pcmcia_state.busy = 0; |
e7a480d2 DB |
695 | } |
696 | file->private_data = NULL; | |
697 | for (link = &s->user; *link; link = &(*link)->next) | |
698 | if (*link == user) break; | |
699 | if (link == NULL) | |
700 | goto out; | |
701 | *link = user->next; | |
702 | user->user_magic = 0; | |
703 | kfree(user); | |
dc109497 | 704 | pcmcia_put_socket(s); |
e7a480d2 DB |
705 | out: |
706 | return 0; | |
707 | } /* ds_release */ | |
708 | ||
709 | /*====================================================================*/ | |
710 | ||
711 | static ssize_t ds_read(struct file *file, char __user *buf, | |
712 | size_t count, loff_t *ppos) | |
713 | { | |
dc109497 | 714 | struct pcmcia_socket *s; |
e7a480d2 DB |
715 | user_info_t *user; |
716 | int ret; | |
717 | ||
40fad04b | 718 | ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
719 | |
720 | if (count < 4) | |
721 | return -EINVAL; | |
722 | ||
723 | user = file->private_data; | |
724 | if (CHECK_USER(user)) | |
725 | return -EIO; | |
726 | ||
727 | s = user->socket; | |
b5e43913 | 728 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
729 | return -EIO; |
730 | ||
731 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); | |
732 | if (ret == 0) | |
733 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
734 | ||
735 | return ret; | |
736 | } /* ds_read */ | |
737 | ||
738 | /*====================================================================*/ | |
739 | ||
740 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
741 | size_t count, loff_t *ppos) | |
742 | { | |
40fad04b | 743 | ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
744 | |
745 | if (count != 4) | |
746 | return -EINVAL; | |
747 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
748 | return -EBADF; | |
749 | ||
750 | return -EIO; | |
751 | } /* ds_write */ | |
752 | ||
753 | /*====================================================================*/ | |
754 | ||
755 | /* No kernel lock - fine */ | |
756 | static u_int ds_poll(struct file *file, poll_table *wait) | |
757 | { | |
dc109497 | 758 | struct pcmcia_socket *s; |
e7a480d2 DB |
759 | user_info_t *user; |
760 | ||
40fad04b | 761 | ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
762 | |
763 | user = file->private_data; | |
764 | if (CHECK_USER(user)) | |
765 | return POLLERR; | |
766 | s = user->socket; | |
767 | /* | |
768 | * We don't check for a dead socket here since that | |
769 | * will send cardmgr into an endless spin. | |
770 | */ | |
771 | poll_wait(file, &s->queue, wait); | |
772 | if (!queue_empty(user)) | |
773 | return POLLIN | POLLRDNORM; | |
774 | return 0; | |
775 | } /* ds_poll */ | |
776 | ||
777 | /*====================================================================*/ | |
778 | ||
e7a480d2 DB |
779 | static int ds_ioctl(struct inode * inode, struct file * file, |
780 | u_int cmd, u_long arg) | |
781 | { | |
dc109497 | 782 | struct pcmcia_socket *s; |
e7a480d2 DB |
783 | void __user *uarg = (char __user *)arg; |
784 | u_int size; | |
785 | int ret, err; | |
786 | ds_ioctl_arg_t *buf; | |
787 | user_info_t *user; | |
788 | ||
789 | ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); | |
790 | ||
791 | user = file->private_data; | |
792 | if (CHECK_USER(user)) | |
793 | return -EIO; | |
794 | ||
795 | s = user->socket; | |
b5e43913 | 796 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
797 | return -EIO; |
798 | ||
799 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
800 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; | |
801 | ||
802 | /* Permission check */ | |
803 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
804 | return -EPERM; | |
805 | ||
806 | if (cmd & IOC_IN) { | |
807 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
808 | ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); | |
809 | return -EFAULT; | |
810 | } | |
811 | } | |
812 | if (cmd & IOC_OUT) { | |
813 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
814 | ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); | |
815 | return -EFAULT; | |
816 | } | |
817 | } | |
818 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
819 | if (!buf) | |
820 | return -ENOMEM; | |
821 | ||
822 | err = ret = 0; | |
823 | ||
9374074f DB |
824 | if (cmd & IOC_IN) { |
825 | if (__copy_from_user((char *)buf, uarg, size)) { | |
826 | err = -EFAULT; | |
827 | goto free_out; | |
828 | } | |
829 | } | |
e7a480d2 DB |
830 | |
831 | switch (cmd) { | |
832 | case DS_ADJUST_RESOURCE_INFO: | |
833 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
834 | break; | |
e7a480d2 DB |
835 | case DS_GET_CONFIGURATION_INFO: |
836 | if (buf->config.Function && | |
dc109497 | 837 | (buf->config.Function >= s->functions)) |
926c5402 | 838 | ret = -EINVAL; |
855cdf13 DB |
839 | else { |
840 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); | |
f47ad214 DR |
841 | ret = pccard_get_configuration_info(s, p_dev, &buf->config); |
842 | pcmcia_put_dev(p_dev); | |
855cdf13 | 843 | } |
e7a480d2 DB |
844 | break; |
845 | case DS_GET_FIRST_TUPLE: | |
7fe908dd | 846 | mutex_lock(&s->skt_mutex); |
dc109497 | 847 | pcmcia_validate_mem(s); |
7fe908dd | 848 | mutex_unlock(&s->skt_mutex); |
dc109497 | 849 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
850 | break; |
851 | case DS_GET_NEXT_TUPLE: | |
dc109497 | 852 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
853 | break; |
854 | case DS_GET_TUPLE_DATA: | |
855 | buf->tuple.TupleData = buf->tuple_parse.data; | |
856 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
dc109497 | 857 | ret = pccard_get_tuple_data(s, &buf->tuple); |
e7a480d2 DB |
858 | break; |
859 | case DS_PARSE_TUPLE: | |
860 | buf->tuple.TupleData = buf->tuple_parse.data; | |
2f3061eb | 861 | ret = pcmcia_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); |
e7a480d2 DB |
862 | break; |
863 | case DS_RESET_CARD: | |
994917f8 | 864 | ret = pcmcia_reset_card(s); |
e7a480d2 DB |
865 | break; |
866 | case DS_GET_STATUS: | |
855cdf13 DB |
867 | if (buf->status.Function && |
868 | (buf->status.Function >= s->functions)) | |
926c5402 | 869 | ret = -EINVAL; |
855cdf13 DB |
870 | else { |
871 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); | |
f47ad214 DR |
872 | ret = pccard_get_status(s, p_dev, &buf->status); |
873 | pcmcia_put_dev(p_dev); | |
855cdf13 DB |
874 | } |
875 | break; | |
e7a480d2 | 876 | case DS_VALIDATE_CIS: |
7fe908dd | 877 | mutex_lock(&s->skt_mutex); |
dc109497 | 878 | pcmcia_validate_mem(s); |
7fe908dd | 879 | mutex_unlock(&s->skt_mutex); |
c5081d5f | 880 | ret = pccard_validate_cis(s, BIND_FN_ALL, &buf->cisinfo.Chains); |
e7a480d2 DB |
881 | break; |
882 | case DS_SUSPEND_CARD: | |
dc109497 | 883 | ret = pcmcia_suspend_card(s); |
e7a480d2 DB |
884 | break; |
885 | case DS_RESUME_CARD: | |
dc109497 | 886 | ret = pcmcia_resume_card(s); |
e7a480d2 DB |
887 | break; |
888 | case DS_EJECT_CARD: | |
dc109497 | 889 | err = pcmcia_eject_card(s); |
e7a480d2 DB |
890 | break; |
891 | case DS_INSERT_CARD: | |
dc109497 | 892 | err = pcmcia_insert_card(s); |
e7a480d2 DB |
893 | break; |
894 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
895 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
896 | err = -EPERM; | |
897 | goto free_out; | |
898 | } | |
855cdf13 | 899 | |
926c5402 | 900 | ret = -EINVAL; |
855cdf13 DB |
901 | |
902 | if (!(buf->conf_reg.Function && | |
903 | (buf->conf_reg.Function >= s->functions))) { | |
904 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); | |
73d58588 | 905 | if (p_dev) { |
855cdf13 | 906 | ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); |
73d58588 BH |
907 | pcmcia_put_dev(p_dev); |
908 | } | |
855cdf13 | 909 | } |
e7a480d2 DB |
910 | break; |
911 | case DS_GET_FIRST_REGION: | |
912 | case DS_GET_NEXT_REGION: | |
913 | case DS_BIND_MTD: | |
914 | if (!capable(CAP_SYS_ADMIN)) { | |
915 | err = -EPERM; | |
916 | goto free_out; | |
917 | } else { | |
918 | static int printed = 0; | |
919 | if (!printed) { | |
920 | printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
921 | printk(KERN_WARNING "MTD handling any more.\n"); | |
922 | printed++; | |
923 | } | |
924 | } | |
925 | err = -EINVAL; | |
926 | goto free_out; | |
927 | break; | |
928 | case DS_GET_FIRST_WINDOW: | |
dc109497 | 929 | ret = pcmcia_get_window(s, &buf->win_info.handle, 0, |
e7a480d2 DB |
930 | &buf->win_info.window); |
931 | break; | |
932 | case DS_GET_NEXT_WINDOW: | |
dc109497 | 933 | ret = pcmcia_get_window(s, &buf->win_info.handle, |
e7a480d2 DB |
934 | buf->win_info.handle->index + 1, &buf->win_info.window); |
935 | break; | |
936 | case DS_GET_MEM_PAGE: | |
937 | ret = pcmcia_get_mem_page(buf->win_info.handle, | |
938 | &buf->win_info.map); | |
939 | break; | |
940 | case DS_REPLACE_CIS: | |
53efec95 | 941 | ret = pcmcia_replace_cis(s, buf->cisdump.Data, buf->cisdump.Length); |
e7a480d2 DB |
942 | break; |
943 | case DS_BIND_REQUEST: | |
944 | if (!capable(CAP_SYS_ADMIN)) { | |
945 | err = -EPERM; | |
946 | goto free_out; | |
947 | } | |
948 | err = bind_request(s, &buf->bind_info); | |
949 | break; | |
950 | case DS_GET_DEVICE_INFO: | |
951 | err = get_device_info(s, &buf->bind_info, 1); | |
952 | break; | |
953 | case DS_GET_NEXT_DEVICE: | |
954 | err = get_device_info(s, &buf->bind_info, 0); | |
955 | break; | |
956 | case DS_UNBIND_REQUEST: | |
957 | err = 0; | |
958 | break; | |
959 | default: | |
960 | err = -EINVAL; | |
961 | } | |
962 | ||
4c89e88b | 963 | if ((err == 0) && (ret != 0)) { |
e7a480d2 DB |
964 | ds_dbg(2, "ds_ioctl: ret = %d\n", ret); |
965 | switch (ret) { | |
610e2374 DB |
966 | case -ENODEV: |
967 | case -EINVAL: | |
968 | case -EBUSY: | |
969 | case -ENOSYS: | |
970 | err = ret; | |
971 | break; | |
610e2374 | 972 | case -ENOMEM: |
e7a480d2 | 973 | err = -ENOSPC; break; |
635d19be | 974 | case -ENOSPC: |
e7a480d2 | 975 | err = -ENODATA; break; |
e7a480d2 DB |
976 | default: |
977 | err = -EIO; break; | |
978 | } | |
979 | } | |
980 | ||
981 | if (cmd & IOC_OUT) { | |
982 | if (__copy_to_user(uarg, (char *)buf, size)) | |
983 | err = -EFAULT; | |
984 | } | |
985 | ||
986 | free_out: | |
987 | kfree(buf); | |
988 | return err; | |
989 | } /* ds_ioctl */ | |
990 | ||
991 | /*====================================================================*/ | |
992 | ||
d54b1fdb | 993 | static const struct file_operations ds_fops = { |
e7a480d2 DB |
994 | .owner = THIS_MODULE, |
995 | .open = ds_open, | |
996 | .release = ds_release, | |
997 | .ioctl = ds_ioctl, | |
998 | .read = ds_read, | |
999 | .write = ds_write, | |
1000 | .poll = ds_poll, | |
1001 | }; | |
1002 | ||
1003 | void __init pcmcia_setup_ioctl(void) { | |
1004 | int i; | |
1005 | ||
1006 | /* Set up character device for user mode clients */ | |
1007 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
1a8ceafc | 1008 | if (i < 0) |
e7a480d2 | 1009 | printk(KERN_NOTICE "unable to find a free device # for " |
1a8ceafc | 1010 | "Driver Services (error=%d)\n", i); |
e7a480d2 DB |
1011 | else |
1012 | major_dev = i; | |
1013 | ||
1014 | #ifdef CONFIG_PROC_FS | |
97094dcf | 1015 | proc_pccard = proc_mkdir("bus/pccard", NULL); |
e7a480d2 DB |
1016 | if (proc_pccard) |
1017 | create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL); | |
1018 | #endif | |
1019 | } | |
1020 | ||
1021 | ||
1022 | void __exit pcmcia_cleanup_ioctl(void) { | |
1023 | #ifdef CONFIG_PROC_FS | |
1024 | if (proc_pccard) { | |
1025 | remove_proc_entry("drivers", proc_pccard); | |
97094dcf | 1026 | remove_proc_entry("bus/pccard", NULL); |
e7a480d2 DB |
1027 | } |
1028 | #endif | |
1029 | if (major_dev != -1) | |
1030 | unregister_chrdev(major_dev, "pcmcia"); | |
1031 | } |