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Commit | Line | Data |
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e7a480d2 DB |
1 | /* |
2 | * pcmcia_ioctl.c -- ioctl interface for cardmgr and cardctl | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * The initial developer of the original code is David A. Hinds | |
9 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
10 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
11 | * | |
12 | * (C) 1999 David A. Hinds | |
13 | * (C) 2003 - 2004 Dominik Brodowski | |
14 | */ | |
15 | ||
16 | /* | |
17 | * This file will go away soon. | |
18 | */ | |
19 | ||
20 | ||
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 | ||
7d16b658 | 61 | #ifdef CONFIG_PCMCIA_DEBUG |
e7a480d2 | 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) { | |
4c89e88b | 170 | return 0; |
c5023801 DB |
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 | } | |
4c89e88b | 277 | return 0; |
4aeba013 DB |
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; | |
4c89e88b | 287 | return 0; |
4aeba013 | 288 | } /* pccard_get_status */ |
c5023801 | 289 | |
64f34642 DB |
290 | int pccard_get_configuration_info(struct pcmcia_socket *s, |
291 | struct pcmcia_device *p_dev, | |
292 | config_info_t *config) | |
293 | { | |
294 | config_t *c; | |
295 | ||
296 | if (!(s->state & SOCKET_PRESENT)) | |
297 | return CS_NO_CARD; | |
298 | ||
299 | ||
300 | #ifdef CONFIG_CARDBUS | |
301 | if (s->state & SOCKET_CARDBUS) { | |
302 | memset(config, 0, sizeof(config_info_t)); | |
303 | config->Vcc = s->socket.Vcc; | |
304 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
305 | config->Option = s->cb_dev->subordinate->number; | |
306 | if (s->state & SOCKET_CARDBUS_CONFIG) { | |
307 | config->Attributes = CONF_VALID_CLIENT; | |
308 | config->IntType = INT_CARDBUS; | |
309 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
310 | if (config->AssignedIRQ) | |
311 | config->Attributes |= CONF_ENABLE_IRQ; | |
312 | if (s->io[0].res) { | |
313 | config->BasePort1 = s->io[0].res->start; | |
314 | config->NumPorts1 = s->io[0].res->end - | |
315 | config->BasePort1 + 1; | |
316 | } | |
317 | } | |
4c89e88b | 318 | return 0; |
64f34642 DB |
319 | } |
320 | #endif | |
321 | ||
322 | if (p_dev) { | |
323 | c = p_dev->function_config; | |
324 | config->Function = p_dev->func; | |
325 | } else { | |
326 | c = NULL; | |
327 | config->Function = 0; | |
328 | } | |
329 | ||
330 | if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { | |
331 | config->Attributes = 0; | |
332 | config->Vcc = s->socket.Vcc; | |
333 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
4c89e88b | 334 | return 0; |
64f34642 DB |
335 | } |
336 | ||
337 | config->Attributes = c->Attributes | CONF_VALID_CLIENT; | |
338 | config->Vcc = s->socket.Vcc; | |
339 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
340 | config->IntType = c->IntType; | |
341 | config->ConfigBase = c->ConfigBase; | |
342 | config->Status = c->Status; | |
343 | config->Pin = c->Pin; | |
344 | config->Copy = c->Copy; | |
345 | config->Option = c->Option; | |
346 | config->ExtStatus = c->ExtStatus; | |
347 | config->Present = config->CardValues = c->CardValues; | |
348 | config->IRQAttributes = c->irq.Attributes; | |
349 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
350 | config->BasePort1 = c->io.BasePort1; | |
351 | config->NumPorts1 = c->io.NumPorts1; | |
352 | config->Attributes1 = c->io.Attributes1; | |
353 | config->BasePort2 = c->io.BasePort2; | |
354 | config->NumPorts2 = c->io.NumPorts2; | |
355 | config->Attributes2 = c->io.Attributes2; | |
356 | config->IOAddrLines = c->io.IOAddrLines; | |
357 | ||
4c89e88b | 358 | return 0; |
64f34642 DB |
359 | } /* pccard_get_configuration_info */ |
360 | ||
361 | ||
e7a480d2 DB |
362 | /*====================================================================== |
363 | ||
364 | These manage a ring buffer of events pending for one user process | |
365 | ||
366 | ======================================================================*/ | |
367 | ||
368 | ||
369 | static int queue_empty(user_info_t *user) | |
370 | { | |
371 | return (user->event_head == user->event_tail); | |
372 | } | |
373 | ||
374 | static event_t get_queued_event(user_info_t *user) | |
375 | { | |
376 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
377 | return user->event[user->event_tail]; | |
378 | } | |
379 | ||
380 | static void queue_event(user_info_t *user, event_t event) | |
381 | { | |
382 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
383 | if (user->event_head == user->event_tail) | |
384 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
385 | user->event[user->event_head] = event; | |
386 | } | |
387 | ||
dc109497 | 388 | void handle_event(struct pcmcia_socket *s, event_t event) |
e7a480d2 DB |
389 | { |
390 | user_info_t *user; | |
391 | for (user = s->user; user; user = user->next) | |
392 | queue_event(user, event); | |
393 | wake_up_interruptible(&s->queue); | |
394 | } | |
395 | ||
396 | ||
397 | /*====================================================================== | |
398 | ||
399 | bind_request() and bind_device() are merged by now. Register_client() | |
400 | is called right at the end of bind_request(), during the driver's | |
401 | ->attach() call. Individual descriptions: | |
402 | ||
403 | bind_request() connects a socket to a particular client driver. | |
404 | It looks up the specified device ID in the list of registered | |
405 | drivers, binds it to the socket, and tries to create an instance | |
406 | of the device. unbind_request() deletes a driver instance. | |
407 | ||
408 | Bind_device() associates a device driver with a particular socket. | |
409 | It is normally called by Driver Services after it has identified | |
410 | a newly inserted card. An instance of that driver will then be | |
411 | eligible to register as a client of this socket. | |
412 | ||
413 | Register_client() uses the dev_info_t handle to match the | |
414 | caller with a socket. The driver must have already been bound | |
415 | to a socket with bind_device() -- in fact, bind_device() | |
416 | allocates the client structure that will be used. | |
417 | ||
418 | ======================================================================*/ | |
419 | ||
dc109497 | 420 | static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) |
e7a480d2 DB |
421 | { |
422 | struct pcmcia_driver *p_drv; | |
423 | struct pcmcia_device *p_dev; | |
424 | int ret = 0; | |
425 | unsigned long flags; | |
426 | ||
dc109497 | 427 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
428 | if (!s) |
429 | return -EINVAL; | |
430 | ||
dc109497 | 431 | ds_dbg(2, "bind_request(%d, '%s')\n", s->sock, |
e7a480d2 DB |
432 | (char *)bind_info->dev_info); |
433 | ||
434 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
435 | if (!p_drv) { | |
436 | ret = -EINVAL; | |
437 | goto err_put; | |
438 | } | |
439 | ||
440 | if (!try_module_get(p_drv->owner)) { | |
441 | ret = -EINVAL; | |
442 | goto err_put_driver; | |
443 | } | |
444 | ||
445 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
446 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
447 | if (p_dev->func == bind_info->function) { | |
448 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
449 | if (p_dev->cardmgr) { | |
450 | /* if there's already a device | |
451 | * registered, and it was registered | |
452 | * by userspace before, we need to | |
453 | * return the "instance". */ | |
454 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
fd238232 | 455 | bind_info->instance = p_dev; |
e7a480d2 DB |
456 | ret = -EBUSY; |
457 | goto err_put_module; | |
458 | } else { | |
459 | /* the correct driver managed to bind | |
460 | * itself magically to the correct | |
461 | * device. */ | |
462 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
463 | p_dev->cardmgr = p_drv; | |
464 | ret = 0; | |
465 | goto err_put_module; | |
466 | } | |
467 | } else if (!p_dev->dev.driver) { | |
468 | /* there's already a device available where | |
469 | * no device has been bound to yet. So we don't | |
470 | * need to register a device! */ | |
471 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
472 | goto rescan; | |
473 | } | |
474 | } | |
475 | } | |
476 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
477 | ||
478 | p_dev = pcmcia_device_add(s, bind_info->function); | |
479 | if (!p_dev) { | |
480 | ret = -EIO; | |
481 | goto err_put_module; | |
482 | } | |
483 | ||
484 | rescan: | |
485 | p_dev->cardmgr = p_drv; | |
486 | ||
487 | /* if a driver is already running, we can abort */ | |
488 | if (p_dev->dev.driver) | |
489 | goto err_put_module; | |
490 | ||
491 | /* | |
492 | * Prevent this racing with a card insertion. | |
493 | */ | |
7fe908dd | 494 | mutex_lock(&s->skt_mutex); |
4deb7c1e | 495 | ret = bus_rescan_devices(&pcmcia_bus_type); |
7fe908dd | 496 | mutex_unlock(&s->skt_mutex); |
4deb7c1e JG |
497 | if (ret) |
498 | goto err_put_module; | |
e7a480d2 DB |
499 | |
500 | /* check whether the driver indeed matched. I don't care if this | |
501 | * is racy or not, because it can only happen on cardmgr access | |
502 | * paths... | |
503 | */ | |
504 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
505 | p_dev->cardmgr = NULL; | |
506 | ||
507 | err_put_module: | |
508 | module_put(p_drv->owner); | |
509 | err_put_driver: | |
510 | put_driver(&p_drv->drv); | |
511 | err_put: | |
dc109497 | 512 | pcmcia_put_socket(s); |
e7a480d2 DB |
513 | |
514 | return (ret); | |
515 | } /* bind_request */ | |
516 | ||
33519ddd DB |
517 | #ifdef CONFIG_CARDBUS |
518 | ||
519 | static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) | |
520 | { | |
521 | if (!s || !(s->state & SOCKET_CARDBUS)) | |
522 | return NULL; | |
e7a480d2 | 523 | |
33519ddd DB |
524 | return s->cb_dev->subordinate; |
525 | } | |
526 | #endif | |
e7a480d2 | 527 | |
dc109497 | 528 | static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) |
e7a480d2 DB |
529 | { |
530 | dev_node_t *node; | |
531 | struct pcmcia_device *p_dev; | |
e2d40963 | 532 | struct pcmcia_driver *p_drv; |
e7a480d2 DB |
533 | unsigned long flags; |
534 | int ret = 0; | |
535 | ||
536 | #ifdef CONFIG_CARDBUS | |
537 | /* | |
538 | * Some unbelievably ugly code to associate the PCI cardbus | |
539 | * device and its driver with the PCMCIA "bind" information. | |
540 | */ | |
541 | { | |
542 | struct pci_bus *bus; | |
543 | ||
dc109497 | 544 | bus = pcmcia_lookup_bus(s); |
e7a480d2 DB |
545 | if (bus) { |
546 | struct list_head *list; | |
547 | struct pci_dev *dev = NULL; | |
548 | ||
549 | list = bus->devices.next; | |
550 | while (list != &bus->devices) { | |
551 | struct pci_dev *pdev = pci_dev_b(list); | |
552 | list = list->next; | |
553 | ||
554 | if (first) { | |
555 | dev = pdev; | |
556 | break; | |
557 | } | |
558 | ||
559 | /* Try to handle "next" here some way? */ | |
560 | } | |
561 | if (dev && dev->driver) { | |
562 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
563 | bind_info->major = 0; | |
564 | bind_info->minor = 0; | |
565 | bind_info->next = NULL; | |
566 | return 0; | |
567 | } | |
568 | } | |
569 | } | |
570 | #endif | |
571 | ||
572 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
573 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
574 | if (p_dev->func == bind_info->function) { | |
575 | p_dev = pcmcia_get_dev(p_dev); | |
576 | if (!p_dev) | |
577 | continue; | |
578 | goto found; | |
579 | } | |
580 | } | |
581 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
582 | return -ENODEV; | |
583 | ||
584 | found: | |
585 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
586 | ||
e2d40963 DB |
587 | p_drv = to_pcmcia_drv(p_dev->dev.driver); |
588 | if (p_drv && !p_dev->_locked) { | |
e7a480d2 DB |
589 | ret = -EAGAIN; |
590 | goto err_put; | |
591 | } | |
592 | ||
593 | if (first) | |
fd238232 | 594 | node = p_dev->dev_node; |
e7a480d2 | 595 | else |
fd238232 | 596 | for (node = p_dev->dev_node; node; node = node->next) |
e7a480d2 DB |
597 | if (node == bind_info->next) |
598 | break; | |
599 | if (!node) { | |
600 | ret = -ENODEV; | |
601 | goto err_put; | |
602 | } | |
603 | ||
604 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
605 | bind_info->major = node->major; | |
606 | bind_info->minor = node->minor; | |
607 | bind_info->next = node->next; | |
608 | ||
609 | err_put: | |
610 | pcmcia_put_dev(p_dev); | |
611 | return (ret); | |
612 | } /* get_device_info */ | |
613 | ||
614 | ||
615 | static int ds_open(struct inode *inode, struct file *file) | |
616 | { | |
617 | socket_t i = iminor(inode); | |
dc109497 | 618 | struct pcmcia_socket *s; |
e7a480d2 | 619 | user_info_t *user; |
c352ec8a | 620 | static int warning_printed = 0; |
0bec0bba | 621 | int ret = 0; |
e7a480d2 DB |
622 | |
623 | ds_dbg(0, "ds_open(socket %d)\n", i); | |
624 | ||
0bec0bba | 625 | lock_kernel(); |
dc109497 | 626 | s = pcmcia_get_socket_by_nr(i); |
0bec0bba JC |
627 | if (!s) { |
628 | ret = -ENODEV; | |
629 | goto out; | |
630 | } | |
dc109497 | 631 | s = pcmcia_get_socket(s); |
0bec0bba JC |
632 | if (!s) { |
633 | ret = -ENODEV; | |
634 | goto out; | |
635 | } | |
e7a480d2 DB |
636 | |
637 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 638 | if (s->pcmcia_state.busy) { |
dc109497 | 639 | pcmcia_put_socket(s); |
0bec0bba JC |
640 | ret = -EBUSY; |
641 | goto out; | |
e7a480d2 DB |
642 | } |
643 | else | |
b5e43913 | 644 | s->pcmcia_state.busy = 1; |
e7a480d2 DB |
645 | } |
646 | ||
647 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
648 | if (!user) { | |
dc109497 | 649 | pcmcia_put_socket(s); |
0bec0bba JC |
650 | ret = -ENOMEM; |
651 | goto out; | |
e7a480d2 DB |
652 | } |
653 | user->event_tail = user->event_head = 0; | |
654 | user->next = s->user; | |
655 | user->user_magic = USER_MAGIC; | |
656 | user->socket = s; | |
657 | s->user = user; | |
658 | file->private_data = user; | |
659 | ||
c352ec8a DB |
660 | if (!warning_printed) { |
661 | printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " | |
73d58588 | 662 | "usage from process: %s.\n", current->comm); |
c352ec8a DB |
663 | printk(KERN_INFO "pcmcia: This interface will soon be removed from " |
664 | "the kernel; please expect breakage unless you upgrade " | |
665 | "to new tools.\n"); | |
666 | printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" | |
667 | "utils/kernel/pcmcia/pcmcia.html for details.\n"); | |
668 | warning_printed = 1; | |
669 | } | |
670 | ||
b5e43913 | 671 | if (s->pcmcia_state.present) |
e7a480d2 | 672 | queue_event(user, CS_EVENT_CARD_INSERTION); |
0bec0bba JC |
673 | out: |
674 | unlock_kernel(); | |
675 | return ret; | |
e7a480d2 DB |
676 | } /* ds_open */ |
677 | ||
678 | /*====================================================================*/ | |
679 | ||
680 | static int ds_release(struct inode *inode, struct file *file) | |
681 | { | |
dc109497 | 682 | struct pcmcia_socket *s; |
e7a480d2 DB |
683 | user_info_t *user, **link; |
684 | ||
685 | ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); | |
686 | ||
687 | user = file->private_data; | |
688 | if (CHECK_USER(user)) | |
689 | goto out; | |
690 | ||
691 | s = user->socket; | |
692 | ||
693 | /* Unlink user data structure */ | |
694 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 695 | s->pcmcia_state.busy = 0; |
e7a480d2 DB |
696 | } |
697 | file->private_data = NULL; | |
698 | for (link = &s->user; *link; link = &(*link)->next) | |
699 | if (*link == user) break; | |
700 | if (link == NULL) | |
701 | goto out; | |
702 | *link = user->next; | |
703 | user->user_magic = 0; | |
704 | kfree(user); | |
dc109497 | 705 | pcmcia_put_socket(s); |
e7a480d2 DB |
706 | out: |
707 | return 0; | |
708 | } /* ds_release */ | |
709 | ||
710 | /*====================================================================*/ | |
711 | ||
712 | static ssize_t ds_read(struct file *file, char __user *buf, | |
713 | size_t count, loff_t *ppos) | |
714 | { | |
dc109497 | 715 | struct pcmcia_socket *s; |
e7a480d2 DB |
716 | user_info_t *user; |
717 | int ret; | |
718 | ||
40fad04b | 719 | ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
720 | |
721 | if (count < 4) | |
722 | return -EINVAL; | |
723 | ||
724 | user = file->private_data; | |
725 | if (CHECK_USER(user)) | |
726 | return -EIO; | |
727 | ||
728 | s = user->socket; | |
b5e43913 | 729 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
730 | return -EIO; |
731 | ||
732 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); | |
733 | if (ret == 0) | |
734 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
735 | ||
736 | return ret; | |
737 | } /* ds_read */ | |
738 | ||
739 | /*====================================================================*/ | |
740 | ||
741 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
742 | size_t count, loff_t *ppos) | |
743 | { | |
40fad04b | 744 | ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
745 | |
746 | if (count != 4) | |
747 | return -EINVAL; | |
748 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
749 | return -EBADF; | |
750 | ||
751 | return -EIO; | |
752 | } /* ds_write */ | |
753 | ||
754 | /*====================================================================*/ | |
755 | ||
756 | /* No kernel lock - fine */ | |
757 | static u_int ds_poll(struct file *file, poll_table *wait) | |
758 | { | |
dc109497 | 759 | struct pcmcia_socket *s; |
e7a480d2 DB |
760 | user_info_t *user; |
761 | ||
40fad04b | 762 | ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
763 | |
764 | user = file->private_data; | |
765 | if (CHECK_USER(user)) | |
766 | return POLLERR; | |
767 | s = user->socket; | |
768 | /* | |
769 | * We don't check for a dead socket here since that | |
770 | * will send cardmgr into an endless spin. | |
771 | */ | |
772 | poll_wait(file, &s->queue, wait); | |
773 | if (!queue_empty(user)) | |
774 | return POLLIN | POLLRDNORM; | |
775 | return 0; | |
776 | } /* ds_poll */ | |
777 | ||
778 | /*====================================================================*/ | |
779 | ||
e7a480d2 DB |
780 | static int ds_ioctl(struct inode * inode, struct file * file, |
781 | u_int cmd, u_long arg) | |
782 | { | |
dc109497 | 783 | struct pcmcia_socket *s; |
e7a480d2 DB |
784 | void __user *uarg = (char __user *)arg; |
785 | u_int size; | |
786 | int ret, err; | |
787 | ds_ioctl_arg_t *buf; | |
788 | user_info_t *user; | |
789 | ||
790 | ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); | |
791 | ||
792 | user = file->private_data; | |
793 | if (CHECK_USER(user)) | |
794 | return -EIO; | |
795 | ||
796 | s = user->socket; | |
b5e43913 | 797 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
798 | return -EIO; |
799 | ||
800 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
801 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; | |
802 | ||
803 | /* Permission check */ | |
804 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
805 | return -EPERM; | |
806 | ||
807 | if (cmd & IOC_IN) { | |
808 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
809 | ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); | |
810 | return -EFAULT; | |
811 | } | |
812 | } | |
813 | if (cmd & IOC_OUT) { | |
814 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
815 | ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); | |
816 | return -EFAULT; | |
817 | } | |
818 | } | |
819 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
820 | if (!buf) | |
821 | return -ENOMEM; | |
822 | ||
823 | err = ret = 0; | |
824 | ||
9374074f DB |
825 | if (cmd & IOC_IN) { |
826 | if (__copy_from_user((char *)buf, uarg, size)) { | |
827 | err = -EFAULT; | |
828 | goto free_out; | |
829 | } | |
830 | } | |
e7a480d2 DB |
831 | |
832 | switch (cmd) { | |
833 | case DS_ADJUST_RESOURCE_INFO: | |
834 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
835 | break; | |
e7a480d2 DB |
836 | case DS_GET_CONFIGURATION_INFO: |
837 | if (buf->config.Function && | |
dc109497 | 838 | (buf->config.Function >= s->functions)) |
e7a480d2 | 839 | ret = CS_BAD_ARGS; |
855cdf13 DB |
840 | else { |
841 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); | |
f47ad214 DR |
842 | ret = pccard_get_configuration_info(s, p_dev, &buf->config); |
843 | pcmcia_put_dev(p_dev); | |
855cdf13 | 844 | } |
e7a480d2 DB |
845 | break; |
846 | case DS_GET_FIRST_TUPLE: | |
7fe908dd | 847 | mutex_lock(&s->skt_mutex); |
dc109497 | 848 | pcmcia_validate_mem(s); |
7fe908dd | 849 | mutex_unlock(&s->skt_mutex); |
dc109497 | 850 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
851 | break; |
852 | case DS_GET_NEXT_TUPLE: | |
dc109497 | 853 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
854 | break; |
855 | case DS_GET_TUPLE_DATA: | |
856 | buf->tuple.TupleData = buf->tuple_parse.data; | |
857 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
dc109497 | 858 | ret = pccard_get_tuple_data(s, &buf->tuple); |
e7a480d2 DB |
859 | break; |
860 | case DS_PARSE_TUPLE: | |
861 | buf->tuple.TupleData = buf->tuple_parse.data; | |
862 | ret = pccard_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); | |
863 | break; | |
864 | case DS_RESET_CARD: | |
dc109497 | 865 | ret = pccard_reset_card(s); |
e7a480d2 DB |
866 | break; |
867 | case DS_GET_STATUS: | |
855cdf13 DB |
868 | if (buf->status.Function && |
869 | (buf->status.Function >= s->functions)) | |
870 | ret = CS_BAD_ARGS; | |
871 | else { | |
872 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); | |
f47ad214 DR |
873 | ret = pccard_get_status(s, p_dev, &buf->status); |
874 | pcmcia_put_dev(p_dev); | |
855cdf13 DB |
875 | } |
876 | break; | |
e7a480d2 | 877 | case DS_VALIDATE_CIS: |
7fe908dd | 878 | mutex_lock(&s->skt_mutex); |
dc109497 | 879 | pcmcia_validate_mem(s); |
7fe908dd | 880 | mutex_unlock(&s->skt_mutex); |
c5081d5f | 881 | ret = pccard_validate_cis(s, BIND_FN_ALL, &buf->cisinfo.Chains); |
e7a480d2 DB |
882 | break; |
883 | case DS_SUSPEND_CARD: | |
dc109497 | 884 | ret = pcmcia_suspend_card(s); |
e7a480d2 DB |
885 | break; |
886 | case DS_RESUME_CARD: | |
dc109497 | 887 | ret = pcmcia_resume_card(s); |
e7a480d2 DB |
888 | break; |
889 | case DS_EJECT_CARD: | |
dc109497 | 890 | err = pcmcia_eject_card(s); |
e7a480d2 DB |
891 | break; |
892 | case DS_INSERT_CARD: | |
dc109497 | 893 | err = pcmcia_insert_card(s); |
e7a480d2 DB |
894 | break; |
895 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
896 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
897 | err = -EPERM; | |
898 | goto free_out; | |
899 | } | |
855cdf13 DB |
900 | |
901 | ret = CS_BAD_ARGS; | |
902 | ||
903 | if (!(buf->conf_reg.Function && | |
904 | (buf->conf_reg.Function >= s->functions))) { | |
905 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); | |
73d58588 | 906 | if (p_dev) { |
855cdf13 | 907 | ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); |
73d58588 BH |
908 | pcmcia_put_dev(p_dev); |
909 | } | |
855cdf13 | 910 | } |
e7a480d2 DB |
911 | break; |
912 | case DS_GET_FIRST_REGION: | |
913 | case DS_GET_NEXT_REGION: | |
914 | case DS_BIND_MTD: | |
915 | if (!capable(CAP_SYS_ADMIN)) { | |
916 | err = -EPERM; | |
917 | goto free_out; | |
918 | } else { | |
919 | static int printed = 0; | |
920 | if (!printed) { | |
921 | printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
922 | printk(KERN_WARNING "MTD handling any more.\n"); | |
923 | printed++; | |
924 | } | |
925 | } | |
926 | err = -EINVAL; | |
927 | goto free_out; | |
928 | break; | |
929 | case DS_GET_FIRST_WINDOW: | |
dc109497 | 930 | ret = pcmcia_get_window(s, &buf->win_info.handle, 0, |
e7a480d2 DB |
931 | &buf->win_info.window); |
932 | break; | |
933 | case DS_GET_NEXT_WINDOW: | |
dc109497 | 934 | ret = pcmcia_get_window(s, &buf->win_info.handle, |
e7a480d2 DB |
935 | buf->win_info.handle->index + 1, &buf->win_info.window); |
936 | break; | |
937 | case DS_GET_MEM_PAGE: | |
938 | ret = pcmcia_get_mem_page(buf->win_info.handle, | |
939 | &buf->win_info.map); | |
940 | break; | |
941 | case DS_REPLACE_CIS: | |
53efec95 | 942 | ret = pcmcia_replace_cis(s, buf->cisdump.Data, buf->cisdump.Length); |
e7a480d2 DB |
943 | break; |
944 | case DS_BIND_REQUEST: | |
945 | if (!capable(CAP_SYS_ADMIN)) { | |
946 | err = -EPERM; | |
947 | goto free_out; | |
948 | } | |
949 | err = bind_request(s, &buf->bind_info); | |
950 | break; | |
951 | case DS_GET_DEVICE_INFO: | |
952 | err = get_device_info(s, &buf->bind_info, 1); | |
953 | break; | |
954 | case DS_GET_NEXT_DEVICE: | |
955 | err = get_device_info(s, &buf->bind_info, 0); | |
956 | break; | |
957 | case DS_UNBIND_REQUEST: | |
958 | err = 0; | |
959 | break; | |
960 | default: | |
961 | err = -EINVAL; | |
962 | } | |
963 | ||
4c89e88b | 964 | if ((err == 0) && (ret != 0)) { |
e7a480d2 DB |
965 | ds_dbg(2, "ds_ioctl: ret = %d\n", ret); |
966 | switch (ret) { | |
967 | case CS_BAD_SOCKET: case CS_NO_CARD: | |
968 | err = -ENODEV; break; | |
969 | case CS_BAD_ARGS: case CS_BAD_ATTRIBUTE: case CS_BAD_IRQ: | |
970 | case CS_BAD_TUPLE: | |
971 | err = -EINVAL; break; | |
972 | case CS_IN_USE: | |
973 | err = -EBUSY; break; | |
974 | case CS_OUT_OF_RESOURCE: | |
975 | err = -ENOSPC; break; | |
976 | case CS_NO_MORE_ITEMS: | |
977 | err = -ENODATA; break; | |
978 | case CS_UNSUPPORTED_FUNCTION: | |
979 | err = -ENOSYS; break; | |
980 | default: | |
981 | err = -EIO; break; | |
982 | } | |
983 | } | |
984 | ||
985 | if (cmd & IOC_OUT) { | |
986 | if (__copy_to_user(uarg, (char *)buf, size)) | |
987 | err = -EFAULT; | |
988 | } | |
989 | ||
990 | free_out: | |
991 | kfree(buf); | |
992 | return err; | |
993 | } /* ds_ioctl */ | |
994 | ||
995 | /*====================================================================*/ | |
996 | ||
d54b1fdb | 997 | static const struct file_operations ds_fops = { |
e7a480d2 DB |
998 | .owner = THIS_MODULE, |
999 | .open = ds_open, | |
1000 | .release = ds_release, | |
1001 | .ioctl = ds_ioctl, | |
1002 | .read = ds_read, | |
1003 | .write = ds_write, | |
1004 | .poll = ds_poll, | |
1005 | }; | |
1006 | ||
1007 | void __init pcmcia_setup_ioctl(void) { | |
1008 | int i; | |
1009 | ||
1010 | /* Set up character device for user mode clients */ | |
1011 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
1a8ceafc | 1012 | if (i < 0) |
e7a480d2 | 1013 | printk(KERN_NOTICE "unable to find a free device # for " |
1a8ceafc | 1014 | "Driver Services (error=%d)\n", i); |
e7a480d2 DB |
1015 | else |
1016 | major_dev = i; | |
1017 | ||
1018 | #ifdef CONFIG_PROC_FS | |
97094dcf | 1019 | proc_pccard = proc_mkdir("bus/pccard", NULL); |
e7a480d2 DB |
1020 | if (proc_pccard) |
1021 | create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL); | |
1022 | #endif | |
1023 | } | |
1024 | ||
1025 | ||
1026 | void __exit pcmcia_cleanup_ioctl(void) { | |
1027 | #ifdef CONFIG_PROC_FS | |
1028 | if (proc_pccard) { | |
1029 | remove_proc_entry("drivers", proc_pccard); | |
97094dcf | 1030 | remove_proc_entry("bus/pccard", NULL); |
e7a480d2 DB |
1031 | } |
1032 | #endif | |
1033 | if (major_dev != -1) | |
1034 | unregister_chrdev(major_dev, "pcmcia"); | |
1035 | } |