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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> | |
e6be4a8c | 30 | #include <linux/seq_file.h> |
0bec0bba | 31 | #include <linux/smp_lock.h> |
e7a480d2 | 32 | #include <linux/workqueue.h> |
e7a480d2 | 33 | |
e7a480d2 DB |
34 | #include <pcmcia/cs_types.h> |
35 | #include <pcmcia/cs.h> | |
e7a480d2 | 36 | #include <pcmcia/cistpl.h> |
4aeba013 | 37 | #include <pcmcia/cisreg.h> |
e7a480d2 DB |
38 | #include <pcmcia/ds.h> |
39 | #include <pcmcia/ss.h> | |
40 | ||
41 | #include "cs_internal.h" | |
e7a480d2 DB |
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 | ||
e6be4a8c | 109 | static int proc_read_drivers_callback(struct device_driver *driver, void *_m) |
e7a480d2 | 110 | { |
e6be4a8c | 111 | struct seq_file *m = _m; |
e7a480d2 DB |
112 | struct pcmcia_driver *p_drv = container_of(driver, |
113 | struct pcmcia_driver, drv); | |
114 | ||
e6be4a8c | 115 | seq_printf(m, "%-24.24s 1 %d\n", p_drv->drv.name, |
e7a480d2 DB |
116 | #ifdef CONFIG_MODULE_UNLOAD |
117 | (p_drv->owner) ? module_refcount(p_drv->owner) : 1 | |
118 | #else | |
119 | 1 | |
120 | #endif | |
121 | ); | |
e7a480d2 DB |
122 | return 0; |
123 | } | |
124 | ||
e6be4a8c | 125 | static int pccard_drivers_proc_show(struct seq_file *m, void *v) |
e7a480d2 | 126 | { |
e6be4a8c AD |
127 | return bus_for_each_drv(&pcmcia_bus_type, NULL, |
128 | m, proc_read_drivers_callback); | |
129 | } | |
e7a480d2 | 130 | |
e6be4a8c AD |
131 | static int pccard_drivers_proc_open(struct inode *inode, struct file *file) |
132 | { | |
133 | return single_open(file, pccard_drivers_proc_show, NULL); | |
e7a480d2 | 134 | } |
e6be4a8c AD |
135 | |
136 | static const struct file_operations pccard_drivers_proc_fops = { | |
137 | .owner = THIS_MODULE, | |
138 | .open = pccard_drivers_proc_open, | |
139 | .read = seq_read, | |
140 | .llseek = seq_lseek, | |
141 | .release = single_release, | |
142 | }; | |
e7a480d2 DB |
143 | #endif |
144 | ||
c5023801 DB |
145 | |
146 | #ifdef CONFIG_PCMCIA_PROBE | |
147 | ||
148 | static int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) | |
149 | { | |
150 | int irq; | |
151 | u32 mask; | |
152 | ||
153 | irq = adj->resource.irq.IRQ; | |
154 | if ((irq < 0) || (irq > 15)) | |
69ba4433 | 155 | return -EINVAL; |
c5023801 DB |
156 | |
157 | if (adj->Action != REMOVE_MANAGED_RESOURCE) | |
158 | return 0; | |
159 | ||
160 | mask = 1 << irq; | |
161 | ||
162 | if (!(s->irq_mask & mask)) | |
163 | return 0; | |
164 | ||
165 | s->irq_mask &= ~mask; | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
170 | #else | |
171 | ||
172 | static inline int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) { | |
4c89e88b | 173 | return 0; |
c5023801 DB |
174 | } |
175 | ||
176 | #endif | |
177 | ||
178 | static int pcmcia_adjust_resource_info(adjust_t *adj) | |
179 | { | |
180 | struct pcmcia_socket *s; | |
de6405e9 | 181 | int ret = -ENOSYS; |
c5023801 DB |
182 | unsigned long flags; |
183 | ||
184 | down_read(&pcmcia_socket_list_rwsem); | |
185 | list_for_each_entry(s, &pcmcia_socket_list, socket_list) { | |
186 | ||
187 | if (adj->Resource == RES_IRQ) | |
188 | ret = adjust_irq(s, adj); | |
189 | ||
190 | else if (s->resource_ops->add_io) { | |
191 | unsigned long begin, end; | |
192 | ||
193 | /* you can't use the old interface if the new | |
194 | * one was used before */ | |
195 | spin_lock_irqsave(&s->lock, flags); | |
196 | if ((s->resource_setup_new) && | |
197 | !(s->resource_setup_old)) { | |
198 | spin_unlock_irqrestore(&s->lock, flags); | |
199 | continue; | |
200 | } else if (!(s->resource_setup_old)) | |
201 | s->resource_setup_old = 1; | |
202 | spin_unlock_irqrestore(&s->lock, flags); | |
203 | ||
204 | switch (adj->Resource) { | |
205 | case RES_MEMORY_RANGE: | |
206 | begin = adj->resource.memory.Base; | |
207 | end = adj->resource.memory.Base + adj->resource.memory.Size - 1; | |
208 | if (s->resource_ops->add_mem) | |
209 | ret =s->resource_ops->add_mem(s, adj->Action, begin, end); | |
210 | case RES_IO_RANGE: | |
211 | begin = adj->resource.io.BasePort; | |
212 | end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1; | |
213 | if (s->resource_ops->add_io) | |
214 | ret = s->resource_ops->add_io(s, adj->Action, begin, end); | |
215 | } | |
216 | if (!ret) { | |
217 | /* as there's no way we know this is the | |
218 | * last call to adjust_resource_info, we | |
219 | * always need to assume this is the latest | |
220 | * one... */ | |
221 | spin_lock_irqsave(&s->lock, flags); | |
222 | s->resource_setup_done = 1; | |
223 | spin_unlock_irqrestore(&s->lock, flags); | |
224 | } | |
225 | } | |
226 | } | |
227 | up_read(&pcmcia_socket_list_rwsem); | |
228 | ||
229 | return (ret); | |
230 | } | |
231 | ||
4aeba013 DB |
232 | /** pccard_get_status |
233 | * | |
234 | * Get the current socket state bits. We don't support the latched | |
235 | * SocketState yet: I haven't seen any point for it. | |
236 | */ | |
237 | ||
238 | static int pccard_get_status(struct pcmcia_socket *s, | |
239 | struct pcmcia_device *p_dev, | |
240 | cs_status_t *status) | |
241 | { | |
242 | config_t *c; | |
243 | int val; | |
244 | ||
245 | s->ops->get_status(s, &val); | |
246 | status->CardState = status->SocketState = 0; | |
247 | status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0; | |
248 | status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0; | |
249 | status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0; | |
250 | status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0; | |
251 | if (s->state & SOCKET_SUSPEND) | |
252 | status->CardState |= CS_EVENT_PM_SUSPEND; | |
253 | if (!(s->state & SOCKET_PRESENT)) | |
3939c1ef | 254 | return -ENODEV; |
4aeba013 DB |
255 | |
256 | c = (p_dev) ? p_dev->function_config : NULL; | |
257 | ||
258 | if ((c != NULL) && (c->state & CONFIG_LOCKED) && | |
259 | (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) { | |
260 | u_char reg; | |
261 | if (c->CardValues & PRESENT_PIN_REPLACE) { | |
262 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, ®); | |
263 | status->CardState |= | |
264 | (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0; | |
265 | status->CardState |= | |
266 | (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0; | |
267 | status->CardState |= | |
268 | (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0; | |
269 | status->CardState |= | |
270 | (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0; | |
271 | } else { | |
272 | /* No PRR? Then assume we're always ready */ | |
273 | status->CardState |= CS_EVENT_READY_CHANGE; | |
274 | } | |
275 | if (c->CardValues & PRESENT_EXT_STATUS) { | |
276 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, ®); | |
277 | status->CardState |= | |
278 | (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0; | |
279 | } | |
4c89e88b | 280 | return 0; |
4aeba013 DB |
281 | } |
282 | status->CardState |= | |
283 | (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0; | |
284 | status->CardState |= | |
285 | (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0; | |
286 | status->CardState |= | |
287 | (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0; | |
288 | status->CardState |= | |
289 | (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0; | |
4c89e88b | 290 | return 0; |
4aeba013 | 291 | } /* pccard_get_status */ |
c5023801 | 292 | |
a0779327 | 293 | static int pccard_get_configuration_info(struct pcmcia_socket *s, |
64f34642 DB |
294 | struct pcmcia_device *p_dev, |
295 | config_info_t *config) | |
296 | { | |
297 | config_t *c; | |
298 | ||
299 | if (!(s->state & SOCKET_PRESENT)) | |
3939c1ef | 300 | return -ENODEV; |
64f34642 DB |
301 | |
302 | ||
303 | #ifdef CONFIG_CARDBUS | |
304 | if (s->state & SOCKET_CARDBUS) { | |
305 | memset(config, 0, sizeof(config_info_t)); | |
306 | config->Vcc = s->socket.Vcc; | |
307 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
308 | config->Option = s->cb_dev->subordinate->number; | |
309 | if (s->state & SOCKET_CARDBUS_CONFIG) { | |
310 | config->Attributes = CONF_VALID_CLIENT; | |
311 | config->IntType = INT_CARDBUS; | |
312 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
313 | if (config->AssignedIRQ) | |
314 | config->Attributes |= CONF_ENABLE_IRQ; | |
315 | if (s->io[0].res) { | |
316 | config->BasePort1 = s->io[0].res->start; | |
317 | config->NumPorts1 = s->io[0].res->end - | |
318 | config->BasePort1 + 1; | |
319 | } | |
320 | } | |
4c89e88b | 321 | return 0; |
64f34642 DB |
322 | } |
323 | #endif | |
324 | ||
325 | if (p_dev) { | |
326 | c = p_dev->function_config; | |
327 | config->Function = p_dev->func; | |
328 | } else { | |
329 | c = NULL; | |
330 | config->Function = 0; | |
331 | } | |
332 | ||
333 | if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { | |
334 | config->Attributes = 0; | |
335 | config->Vcc = s->socket.Vcc; | |
336 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
4c89e88b | 337 | return 0; |
64f34642 DB |
338 | } |
339 | ||
340 | config->Attributes = c->Attributes | CONF_VALID_CLIENT; | |
341 | config->Vcc = s->socket.Vcc; | |
342 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
343 | config->IntType = c->IntType; | |
344 | config->ConfigBase = c->ConfigBase; | |
345 | config->Status = c->Status; | |
346 | config->Pin = c->Pin; | |
347 | config->Copy = c->Copy; | |
348 | config->Option = c->Option; | |
349 | config->ExtStatus = c->ExtStatus; | |
350 | config->Present = config->CardValues = c->CardValues; | |
351 | config->IRQAttributes = c->irq.Attributes; | |
352 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
353 | config->BasePort1 = c->io.BasePort1; | |
354 | config->NumPorts1 = c->io.NumPorts1; | |
355 | config->Attributes1 = c->io.Attributes1; | |
356 | config->BasePort2 = c->io.BasePort2; | |
357 | config->NumPorts2 = c->io.NumPorts2; | |
358 | config->Attributes2 = c->io.Attributes2; | |
359 | config->IOAddrLines = c->io.IOAddrLines; | |
360 | ||
4c89e88b | 361 | return 0; |
64f34642 DB |
362 | } /* pccard_get_configuration_info */ |
363 | ||
364 | ||
e7a480d2 DB |
365 | /*====================================================================== |
366 | ||
367 | These manage a ring buffer of events pending for one user process | |
368 | ||
369 | ======================================================================*/ | |
370 | ||
371 | ||
372 | static int queue_empty(user_info_t *user) | |
373 | { | |
374 | return (user->event_head == user->event_tail); | |
375 | } | |
376 | ||
377 | static event_t get_queued_event(user_info_t *user) | |
378 | { | |
379 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
380 | return user->event[user->event_tail]; | |
381 | } | |
382 | ||
383 | static void queue_event(user_info_t *user, event_t event) | |
384 | { | |
385 | user->event_head = (user->event_head+1) % MAX_EVENTS; | |
386 | if (user->event_head == user->event_tail) | |
387 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; | |
388 | user->event[user->event_head] = event; | |
389 | } | |
390 | ||
dc109497 | 391 | void handle_event(struct pcmcia_socket *s, event_t event) |
e7a480d2 DB |
392 | { |
393 | user_info_t *user; | |
394 | for (user = s->user; user; user = user->next) | |
395 | queue_event(user, event); | |
396 | wake_up_interruptible(&s->queue); | |
397 | } | |
398 | ||
399 | ||
400 | /*====================================================================== | |
401 | ||
402 | bind_request() and bind_device() are merged by now. Register_client() | |
403 | is called right at the end of bind_request(), during the driver's | |
404 | ->attach() call. Individual descriptions: | |
405 | ||
406 | bind_request() connects a socket to a particular client driver. | |
407 | It looks up the specified device ID in the list of registered | |
408 | drivers, binds it to the socket, and tries to create an instance | |
409 | of the device. unbind_request() deletes a driver instance. | |
410 | ||
411 | Bind_device() associates a device driver with a particular socket. | |
412 | It is normally called by Driver Services after it has identified | |
413 | a newly inserted card. An instance of that driver will then be | |
414 | eligible to register as a client of this socket. | |
415 | ||
416 | Register_client() uses the dev_info_t handle to match the | |
417 | caller with a socket. The driver must have already been bound | |
418 | to a socket with bind_device() -- in fact, bind_device() | |
419 | allocates the client structure that will be used. | |
420 | ||
421 | ======================================================================*/ | |
422 | ||
dc109497 | 423 | static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) |
e7a480d2 DB |
424 | { |
425 | struct pcmcia_driver *p_drv; | |
426 | struct pcmcia_device *p_dev; | |
427 | int ret = 0; | |
428 | unsigned long flags; | |
429 | ||
dc109497 | 430 | s = pcmcia_get_socket(s); |
e7a480d2 DB |
431 | if (!s) |
432 | return -EINVAL; | |
433 | ||
dc109497 | 434 | ds_dbg(2, "bind_request(%d, '%s')\n", s->sock, |
e7a480d2 DB |
435 | (char *)bind_info->dev_info); |
436 | ||
437 | p_drv = get_pcmcia_driver(&bind_info->dev_info); | |
438 | if (!p_drv) { | |
439 | ret = -EINVAL; | |
440 | goto err_put; | |
441 | } | |
442 | ||
443 | if (!try_module_get(p_drv->owner)) { | |
444 | ret = -EINVAL; | |
445 | goto err_put_driver; | |
446 | } | |
447 | ||
448 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
449 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
450 | if (p_dev->func == bind_info->function) { | |
451 | if ((p_dev->dev.driver == &p_drv->drv)) { | |
452 | if (p_dev->cardmgr) { | |
453 | /* if there's already a device | |
454 | * registered, and it was registered | |
455 | * by userspace before, we need to | |
456 | * return the "instance". */ | |
457 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
fd238232 | 458 | bind_info->instance = p_dev; |
e7a480d2 DB |
459 | ret = -EBUSY; |
460 | goto err_put_module; | |
461 | } else { | |
462 | /* the correct driver managed to bind | |
463 | * itself magically to the correct | |
464 | * device. */ | |
465 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
466 | p_dev->cardmgr = p_drv; | |
467 | ret = 0; | |
468 | goto err_put_module; | |
469 | } | |
470 | } else if (!p_dev->dev.driver) { | |
471 | /* there's already a device available where | |
472 | * no device has been bound to yet. So we don't | |
473 | * need to register a device! */ | |
474 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
475 | goto rescan; | |
476 | } | |
477 | } | |
478 | } | |
479 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
480 | ||
481 | p_dev = pcmcia_device_add(s, bind_info->function); | |
482 | if (!p_dev) { | |
483 | ret = -EIO; | |
484 | goto err_put_module; | |
485 | } | |
486 | ||
487 | rescan: | |
488 | p_dev->cardmgr = p_drv; | |
489 | ||
490 | /* if a driver is already running, we can abort */ | |
491 | if (p_dev->dev.driver) | |
492 | goto err_put_module; | |
493 | ||
494 | /* | |
495 | * Prevent this racing with a card insertion. | |
496 | */ | |
7fe908dd | 497 | mutex_lock(&s->skt_mutex); |
4deb7c1e | 498 | ret = bus_rescan_devices(&pcmcia_bus_type); |
7fe908dd | 499 | mutex_unlock(&s->skt_mutex); |
4deb7c1e JG |
500 | if (ret) |
501 | goto err_put_module; | |
e7a480d2 DB |
502 | |
503 | /* check whether the driver indeed matched. I don't care if this | |
504 | * is racy or not, because it can only happen on cardmgr access | |
505 | * paths... | |
506 | */ | |
507 | if (!(p_dev->dev.driver == &p_drv->drv)) | |
508 | p_dev->cardmgr = NULL; | |
509 | ||
510 | err_put_module: | |
511 | module_put(p_drv->owner); | |
512 | err_put_driver: | |
513 | put_driver(&p_drv->drv); | |
514 | err_put: | |
dc109497 | 515 | pcmcia_put_socket(s); |
e7a480d2 DB |
516 | |
517 | return (ret); | |
518 | } /* bind_request */ | |
519 | ||
33519ddd DB |
520 | #ifdef CONFIG_CARDBUS |
521 | ||
522 | static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) | |
523 | { | |
524 | if (!s || !(s->state & SOCKET_CARDBUS)) | |
525 | return NULL; | |
e7a480d2 | 526 | |
33519ddd DB |
527 | return s->cb_dev->subordinate; |
528 | } | |
529 | #endif | |
e7a480d2 | 530 | |
dc109497 | 531 | static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) |
e7a480d2 DB |
532 | { |
533 | dev_node_t *node; | |
534 | struct pcmcia_device *p_dev; | |
e2d40963 | 535 | struct pcmcia_driver *p_drv; |
e7a480d2 DB |
536 | unsigned long flags; |
537 | int ret = 0; | |
538 | ||
539 | #ifdef CONFIG_CARDBUS | |
540 | /* | |
541 | * Some unbelievably ugly code to associate the PCI cardbus | |
542 | * device and its driver with the PCMCIA "bind" information. | |
543 | */ | |
544 | { | |
545 | struct pci_bus *bus; | |
546 | ||
dc109497 | 547 | bus = pcmcia_lookup_bus(s); |
e7a480d2 DB |
548 | if (bus) { |
549 | struct list_head *list; | |
550 | struct pci_dev *dev = NULL; | |
551 | ||
552 | list = bus->devices.next; | |
553 | while (list != &bus->devices) { | |
554 | struct pci_dev *pdev = pci_dev_b(list); | |
555 | list = list->next; | |
556 | ||
557 | if (first) { | |
558 | dev = pdev; | |
559 | break; | |
560 | } | |
561 | ||
562 | /* Try to handle "next" here some way? */ | |
563 | } | |
564 | if (dev && dev->driver) { | |
565 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); | |
566 | bind_info->major = 0; | |
567 | bind_info->minor = 0; | |
568 | bind_info->next = NULL; | |
569 | return 0; | |
570 | } | |
571 | } | |
572 | } | |
573 | #endif | |
574 | ||
575 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); | |
576 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { | |
577 | if (p_dev->func == bind_info->function) { | |
578 | p_dev = pcmcia_get_dev(p_dev); | |
579 | if (!p_dev) | |
580 | continue; | |
581 | goto found; | |
582 | } | |
583 | } | |
584 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
585 | return -ENODEV; | |
586 | ||
587 | found: | |
588 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); | |
589 | ||
e2d40963 DB |
590 | p_drv = to_pcmcia_drv(p_dev->dev.driver); |
591 | if (p_drv && !p_dev->_locked) { | |
e7a480d2 DB |
592 | ret = -EAGAIN; |
593 | goto err_put; | |
594 | } | |
595 | ||
596 | if (first) | |
fd238232 | 597 | node = p_dev->dev_node; |
e7a480d2 | 598 | else |
fd238232 | 599 | for (node = p_dev->dev_node; node; node = node->next) |
e7a480d2 DB |
600 | if (node == bind_info->next) |
601 | break; | |
602 | if (!node) { | |
603 | ret = -ENODEV; | |
604 | goto err_put; | |
605 | } | |
606 | ||
607 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); | |
608 | bind_info->major = node->major; | |
609 | bind_info->minor = node->minor; | |
610 | bind_info->next = node->next; | |
611 | ||
612 | err_put: | |
613 | pcmcia_put_dev(p_dev); | |
614 | return (ret); | |
615 | } /* get_device_info */ | |
616 | ||
617 | ||
618 | static int ds_open(struct inode *inode, struct file *file) | |
619 | { | |
620 | socket_t i = iminor(inode); | |
dc109497 | 621 | struct pcmcia_socket *s; |
e7a480d2 | 622 | user_info_t *user; |
c352ec8a | 623 | static int warning_printed = 0; |
0bec0bba | 624 | int ret = 0; |
e7a480d2 DB |
625 | |
626 | ds_dbg(0, "ds_open(socket %d)\n", i); | |
627 | ||
0bec0bba | 628 | lock_kernel(); |
dc109497 | 629 | s = pcmcia_get_socket_by_nr(i); |
0bec0bba JC |
630 | if (!s) { |
631 | ret = -ENODEV; | |
632 | goto out; | |
633 | } | |
dc109497 | 634 | s = pcmcia_get_socket(s); |
0bec0bba JC |
635 | if (!s) { |
636 | ret = -ENODEV; | |
637 | goto out; | |
638 | } | |
e7a480d2 DB |
639 | |
640 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 641 | if (s->pcmcia_state.busy) { |
dc109497 | 642 | pcmcia_put_socket(s); |
0bec0bba JC |
643 | ret = -EBUSY; |
644 | goto out; | |
e7a480d2 DB |
645 | } |
646 | else | |
b5e43913 | 647 | s->pcmcia_state.busy = 1; |
e7a480d2 DB |
648 | } |
649 | ||
650 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); | |
651 | if (!user) { | |
dc109497 | 652 | pcmcia_put_socket(s); |
0bec0bba JC |
653 | ret = -ENOMEM; |
654 | goto out; | |
e7a480d2 DB |
655 | } |
656 | user->event_tail = user->event_head = 0; | |
657 | user->next = s->user; | |
658 | user->user_magic = USER_MAGIC; | |
659 | user->socket = s; | |
660 | s->user = user; | |
661 | file->private_data = user; | |
662 | ||
c352ec8a DB |
663 | if (!warning_printed) { |
664 | printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " | |
73d58588 | 665 | "usage from process: %s.\n", current->comm); |
c352ec8a DB |
666 | printk(KERN_INFO "pcmcia: This interface will soon be removed from " |
667 | "the kernel; please expect breakage unless you upgrade " | |
668 | "to new tools.\n"); | |
669 | printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" | |
670 | "utils/kernel/pcmcia/pcmcia.html for details.\n"); | |
671 | warning_printed = 1; | |
672 | } | |
673 | ||
b5e43913 | 674 | if (s->pcmcia_state.present) |
e7a480d2 | 675 | queue_event(user, CS_EVENT_CARD_INSERTION); |
0bec0bba JC |
676 | out: |
677 | unlock_kernel(); | |
678 | return ret; | |
e7a480d2 DB |
679 | } /* ds_open */ |
680 | ||
681 | /*====================================================================*/ | |
682 | ||
683 | static int ds_release(struct inode *inode, struct file *file) | |
684 | { | |
dc109497 | 685 | struct pcmcia_socket *s; |
e7a480d2 DB |
686 | user_info_t *user, **link; |
687 | ||
688 | ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); | |
689 | ||
690 | user = file->private_data; | |
691 | if (CHECK_USER(user)) | |
692 | goto out; | |
693 | ||
694 | s = user->socket; | |
695 | ||
696 | /* Unlink user data structure */ | |
697 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { | |
b5e43913 | 698 | s->pcmcia_state.busy = 0; |
e7a480d2 DB |
699 | } |
700 | file->private_data = NULL; | |
701 | for (link = &s->user; *link; link = &(*link)->next) | |
702 | if (*link == user) break; | |
703 | if (link == NULL) | |
704 | goto out; | |
705 | *link = user->next; | |
706 | user->user_magic = 0; | |
707 | kfree(user); | |
dc109497 | 708 | pcmcia_put_socket(s); |
e7a480d2 DB |
709 | out: |
710 | return 0; | |
711 | } /* ds_release */ | |
712 | ||
713 | /*====================================================================*/ | |
714 | ||
715 | static ssize_t ds_read(struct file *file, char __user *buf, | |
716 | size_t count, loff_t *ppos) | |
717 | { | |
dc109497 | 718 | struct pcmcia_socket *s; |
e7a480d2 DB |
719 | user_info_t *user; |
720 | int ret; | |
721 | ||
40fad04b | 722 | ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
723 | |
724 | if (count < 4) | |
725 | return -EINVAL; | |
726 | ||
727 | user = file->private_data; | |
728 | if (CHECK_USER(user)) | |
729 | return -EIO; | |
730 | ||
731 | s = user->socket; | |
b5e43913 | 732 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
733 | return -EIO; |
734 | ||
735 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); | |
736 | if (ret == 0) | |
737 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; | |
738 | ||
739 | return ret; | |
740 | } /* ds_read */ | |
741 | ||
742 | /*====================================================================*/ | |
743 | ||
744 | static ssize_t ds_write(struct file *file, const char __user *buf, | |
745 | size_t count, loff_t *ppos) | |
746 | { | |
40fad04b | 747 | ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
748 | |
749 | if (count != 4) | |
750 | return -EINVAL; | |
751 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) | |
752 | return -EBADF; | |
753 | ||
754 | return -EIO; | |
755 | } /* ds_write */ | |
756 | ||
757 | /*====================================================================*/ | |
758 | ||
759 | /* No kernel lock - fine */ | |
760 | static u_int ds_poll(struct file *file, poll_table *wait) | |
761 | { | |
dc109497 | 762 | struct pcmcia_socket *s; |
e7a480d2 DB |
763 | user_info_t *user; |
764 | ||
40fad04b | 765 | ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
e7a480d2 DB |
766 | |
767 | user = file->private_data; | |
768 | if (CHECK_USER(user)) | |
769 | return POLLERR; | |
770 | s = user->socket; | |
771 | /* | |
772 | * We don't check for a dead socket here since that | |
773 | * will send cardmgr into an endless spin. | |
774 | */ | |
775 | poll_wait(file, &s->queue, wait); | |
776 | if (!queue_empty(user)) | |
777 | return POLLIN | POLLRDNORM; | |
778 | return 0; | |
779 | } /* ds_poll */ | |
780 | ||
781 | /*====================================================================*/ | |
782 | ||
e7a480d2 DB |
783 | static int ds_ioctl(struct inode * inode, struct file * file, |
784 | u_int cmd, u_long arg) | |
785 | { | |
dc109497 | 786 | struct pcmcia_socket *s; |
e7a480d2 DB |
787 | void __user *uarg = (char __user *)arg; |
788 | u_int size; | |
789 | int ret, err; | |
790 | ds_ioctl_arg_t *buf; | |
791 | user_info_t *user; | |
792 | ||
793 | ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); | |
794 | ||
795 | user = file->private_data; | |
796 | if (CHECK_USER(user)) | |
797 | return -EIO; | |
798 | ||
799 | s = user->socket; | |
b5e43913 | 800 | if (s->pcmcia_state.dead) |
e7a480d2 DB |
801 | return -EIO; |
802 | ||
803 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; | |
804 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; | |
805 | ||
806 | /* Permission check */ | |
807 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) | |
808 | return -EPERM; | |
809 | ||
810 | if (cmd & IOC_IN) { | |
811 | if (!access_ok(VERIFY_READ, uarg, size)) { | |
812 | ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); | |
813 | return -EFAULT; | |
814 | } | |
815 | } | |
816 | if (cmd & IOC_OUT) { | |
817 | if (!access_ok(VERIFY_WRITE, uarg, size)) { | |
818 | ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); | |
819 | return -EFAULT; | |
820 | } | |
821 | } | |
822 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); | |
823 | if (!buf) | |
824 | return -ENOMEM; | |
825 | ||
826 | err = ret = 0; | |
827 | ||
9374074f DB |
828 | if (cmd & IOC_IN) { |
829 | if (__copy_from_user((char *)buf, uarg, size)) { | |
830 | err = -EFAULT; | |
831 | goto free_out; | |
832 | } | |
833 | } | |
e7a480d2 DB |
834 | |
835 | switch (cmd) { | |
836 | case DS_ADJUST_RESOURCE_INFO: | |
837 | ret = pcmcia_adjust_resource_info(&buf->adjust); | |
838 | break; | |
e7a480d2 DB |
839 | case DS_GET_CONFIGURATION_INFO: |
840 | if (buf->config.Function && | |
dc109497 | 841 | (buf->config.Function >= s->functions)) |
926c5402 | 842 | ret = -EINVAL; |
855cdf13 DB |
843 | else { |
844 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); | |
f47ad214 DR |
845 | ret = pccard_get_configuration_info(s, p_dev, &buf->config); |
846 | pcmcia_put_dev(p_dev); | |
855cdf13 | 847 | } |
e7a480d2 DB |
848 | break; |
849 | case DS_GET_FIRST_TUPLE: | |
7fe908dd | 850 | mutex_lock(&s->skt_mutex); |
dc109497 | 851 | pcmcia_validate_mem(s); |
7fe908dd | 852 | mutex_unlock(&s->skt_mutex); |
dc109497 | 853 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
854 | break; |
855 | case DS_GET_NEXT_TUPLE: | |
dc109497 | 856 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, &buf->tuple); |
e7a480d2 DB |
857 | break; |
858 | case DS_GET_TUPLE_DATA: | |
859 | buf->tuple.TupleData = buf->tuple_parse.data; | |
860 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); | |
dc109497 | 861 | ret = pccard_get_tuple_data(s, &buf->tuple); |
e7a480d2 DB |
862 | break; |
863 | case DS_PARSE_TUPLE: | |
864 | buf->tuple.TupleData = buf->tuple_parse.data; | |
2f3061eb | 865 | ret = pcmcia_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); |
e7a480d2 DB |
866 | break; |
867 | case DS_RESET_CARD: | |
994917f8 | 868 | ret = pcmcia_reset_card(s); |
e7a480d2 DB |
869 | break; |
870 | case DS_GET_STATUS: | |
855cdf13 DB |
871 | if (buf->status.Function && |
872 | (buf->status.Function >= s->functions)) | |
926c5402 | 873 | ret = -EINVAL; |
855cdf13 DB |
874 | else { |
875 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); | |
f47ad214 DR |
876 | ret = pccard_get_status(s, p_dev, &buf->status); |
877 | pcmcia_put_dev(p_dev); | |
855cdf13 DB |
878 | } |
879 | break; | |
e7a480d2 | 880 | case DS_VALIDATE_CIS: |
7fe908dd | 881 | mutex_lock(&s->skt_mutex); |
dc109497 | 882 | pcmcia_validate_mem(s); |
7fe908dd | 883 | mutex_unlock(&s->skt_mutex); |
84897fc0 | 884 | ret = pccard_validate_cis(s, &buf->cisinfo.Chains); |
e7a480d2 DB |
885 | break; |
886 | case DS_SUSPEND_CARD: | |
dc109497 | 887 | ret = pcmcia_suspend_card(s); |
e7a480d2 DB |
888 | break; |
889 | case DS_RESUME_CARD: | |
dc109497 | 890 | ret = pcmcia_resume_card(s); |
e7a480d2 DB |
891 | break; |
892 | case DS_EJECT_CARD: | |
dc109497 | 893 | err = pcmcia_eject_card(s); |
e7a480d2 DB |
894 | break; |
895 | case DS_INSERT_CARD: | |
dc109497 | 896 | err = pcmcia_insert_card(s); |
e7a480d2 DB |
897 | break; |
898 | case DS_ACCESS_CONFIGURATION_REGISTER: | |
899 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { | |
900 | err = -EPERM; | |
901 | goto free_out; | |
902 | } | |
855cdf13 | 903 | |
926c5402 | 904 | ret = -EINVAL; |
855cdf13 DB |
905 | |
906 | if (!(buf->conf_reg.Function && | |
907 | (buf->conf_reg.Function >= s->functions))) { | |
908 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); | |
73d58588 | 909 | if (p_dev) { |
855cdf13 | 910 | ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); |
73d58588 BH |
911 | pcmcia_put_dev(p_dev); |
912 | } | |
855cdf13 | 913 | } |
e7a480d2 DB |
914 | break; |
915 | case DS_GET_FIRST_REGION: | |
916 | case DS_GET_NEXT_REGION: | |
917 | case DS_BIND_MTD: | |
918 | if (!capable(CAP_SYS_ADMIN)) { | |
919 | err = -EPERM; | |
920 | goto free_out; | |
921 | } else { | |
a9c56953 MK |
922 | printk_once(KERN_WARNING |
923 | "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); | |
924 | printk_once(KERN_WARNING "MTD handling any more.\n"); | |
e7a480d2 DB |
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) { | |
610e2374 DB |
967 | case -ENODEV: |
968 | case -EINVAL: | |
969 | case -EBUSY: | |
970 | case -ENOSYS: | |
971 | err = ret; | |
972 | break; | |
610e2374 | 973 | case -ENOMEM: |
e7a480d2 | 974 | err = -ENOSPC; break; |
635d19be | 975 | case -ENOSPC: |
e7a480d2 | 976 | err = -ENODATA; break; |
e7a480d2 DB |
977 | default: |
978 | err = -EIO; break; | |
979 | } | |
980 | } | |
981 | ||
982 | if (cmd & IOC_OUT) { | |
983 | if (__copy_to_user(uarg, (char *)buf, size)) | |
984 | err = -EFAULT; | |
985 | } | |
986 | ||
987 | free_out: | |
988 | kfree(buf); | |
989 | return err; | |
990 | } /* ds_ioctl */ | |
991 | ||
992 | /*====================================================================*/ | |
993 | ||
d54b1fdb | 994 | static const struct file_operations ds_fops = { |
e7a480d2 DB |
995 | .owner = THIS_MODULE, |
996 | .open = ds_open, | |
997 | .release = ds_release, | |
998 | .ioctl = ds_ioctl, | |
999 | .read = ds_read, | |
1000 | .write = ds_write, | |
1001 | .poll = ds_poll, | |
1002 | }; | |
1003 | ||
1004 | void __init pcmcia_setup_ioctl(void) { | |
1005 | int i; | |
1006 | ||
1007 | /* Set up character device for user mode clients */ | |
1008 | i = register_chrdev(0, "pcmcia", &ds_fops); | |
1a8ceafc | 1009 | if (i < 0) |
e7a480d2 | 1010 | printk(KERN_NOTICE "unable to find a free device # for " |
1a8ceafc | 1011 | "Driver Services (error=%d)\n", i); |
e7a480d2 DB |
1012 | else |
1013 | major_dev = i; | |
1014 | ||
1015 | #ifdef CONFIG_PROC_FS | |
97094dcf | 1016 | proc_pccard = proc_mkdir("bus/pccard", NULL); |
e7a480d2 | 1017 | if (proc_pccard) |
e6be4a8c | 1018 | proc_create("drivers", 0, proc_pccard, &pccard_drivers_proc_fops); |
e7a480d2 DB |
1019 | #endif |
1020 | } | |
1021 | ||
1022 | ||
1023 | void __exit pcmcia_cleanup_ioctl(void) { | |
1024 | #ifdef CONFIG_PROC_FS | |
1025 | if (proc_pccard) { | |
1026 | remove_proc_entry("drivers", proc_pccard); | |
97094dcf | 1027 | remove_proc_entry("bus/pccard", NULL); |
e7a480d2 DB |
1028 | } |
1029 | #endif | |
1030 | if (major_dev != -1) | |
1031 | unregister_chrdev(major_dev, "pcmcia"); | |
1032 | } |