Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
e7b96070 | 2 | * Legacy: Generic DRM Contexts |
1da177e4 LT |
3 | * |
4 | * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. | |
5 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. | |
6 | * All Rights Reserved. | |
7 | * | |
e7b96070 DH |
8 | * Author: Rickard E. (Rik) Faith <faith@valinux.com> |
9 | * Author: Gareth Hughes <gareth@valinux.com> | |
10 | * | |
1da177e4 LT |
11 | * Permission is hereby granted, free of charge, to any person obtaining a |
12 | * copy of this software and associated documentation files (the "Software"), | |
13 | * to deal in the Software without restriction, including without limitation | |
14 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
15 | * and/or sell copies of the Software, and to permit persons to whom the | |
16 | * Software is furnished to do so, subject to the following conditions: | |
17 | * | |
18 | * The above copyright notice and this permission notice (including the next | |
19 | * paragraph) shall be included in all copies or substantial portions of the | |
20 | * Software. | |
21 | * | |
22 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
23 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
24 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
25 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
26 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
27 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
28 | * OTHER DEALINGS IN THE SOFTWARE. | |
29 | */ | |
30 | ||
760285e7 | 31 | #include <drm/drmP.h> |
e7b96070 DH |
32 | #include "drm_legacy.h" |
33 | ||
34 | struct drm_ctx_list { | |
35 | struct list_head head; | |
36 | drm_context_t handle; | |
37 | struct drm_file *tag; | |
38 | }; | |
1da177e4 | 39 | |
c21eb21c DA |
40 | /******************************************************************/ |
41 | /** \name Context bitmap support */ | |
42 | /*@{*/ | |
43 | ||
1da177e4 LT |
44 | /** |
45 | * Free a handle from the context bitmap. | |
46 | * | |
47 | * \param dev DRM device. | |
48 | * \param ctx_handle context handle. | |
49 | * | |
50 | * Clears the bit specified by \p ctx_handle in drm_device::ctx_bitmap and the entry | |
62968144 | 51 | * in drm_device::ctx_idr, while holding the drm_device::struct_mutex |
1da177e4 LT |
52 | * lock. |
53 | */ | |
e7b96070 | 54 | void drm_legacy_ctxbitmap_free(struct drm_device * dev, int ctx_handle) |
1da177e4 | 55 | { |
0e975980 PA |
56 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
57 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
58 | return; | |
59 | ||
62968144 DA |
60 | mutex_lock(&dev->struct_mutex); |
61 | idr_remove(&dev->ctx_idr, ctx_handle); | |
62 | mutex_unlock(&dev->struct_mutex); | |
1da177e4 LT |
63 | } |
64 | ||
b5e89ed5 | 65 | /** |
1da177e4 LT |
66 | * Context bitmap allocation. |
67 | * | |
68 | * \param dev DRM device. | |
69 | * \return (non-negative) context handle on success or a negative number on failure. | |
70 | * | |
62968144 | 71 | * Allocate a new idr from drm_device::ctx_idr while holding the |
30e2fb18 | 72 | * drm_device::struct_mutex lock. |
1da177e4 | 73 | */ |
e7b96070 | 74 | static int drm_legacy_ctxbitmap_next(struct drm_device * dev) |
1da177e4 | 75 | { |
62968144 | 76 | int ret; |
1da177e4 | 77 | |
30e2fb18 | 78 | mutex_lock(&dev->struct_mutex); |
2e928815 TH |
79 | ret = idr_alloc(&dev->ctx_idr, NULL, DRM_RESERVED_CONTEXTS, 0, |
80 | GFP_KERNEL); | |
30e2fb18 | 81 | mutex_unlock(&dev->struct_mutex); |
2e928815 | 82 | return ret; |
1da177e4 LT |
83 | } |
84 | ||
85 | /** | |
86 | * Context bitmap initialization. | |
87 | * | |
88 | * \param dev DRM device. | |
89 | * | |
62968144 | 90 | * Initialise the drm_device::ctx_idr |
1da177e4 | 91 | */ |
ba6976c1 | 92 | void drm_legacy_ctxbitmap_init(struct drm_device * dev) |
1da177e4 | 93 | { |
0e975980 PA |
94 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
95 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
ba6976c1 | 96 | return; |
0e975980 | 97 | |
62968144 | 98 | idr_init(&dev->ctx_idr); |
1da177e4 LT |
99 | } |
100 | ||
101 | /** | |
102 | * Context bitmap cleanup. | |
103 | * | |
104 | * \param dev DRM device. | |
105 | * | |
62968144 DA |
106 | * Free all idr members using drm_ctx_sarea_free helper function |
107 | * while holding the drm_device::struct_mutex lock. | |
1da177e4 | 108 | */ |
e7b96070 | 109 | void drm_legacy_ctxbitmap_cleanup(struct drm_device * dev) |
1da177e4 | 110 | { |
0e975980 PA |
111 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
112 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
113 | return; | |
114 | ||
30e2fb18 | 115 | mutex_lock(&dev->struct_mutex); |
4d53233a | 116 | idr_destroy(&dev->ctx_idr); |
30e2fb18 | 117 | mutex_unlock(&dev->struct_mutex); |
1da177e4 LT |
118 | } |
119 | ||
9f8d21ea DH |
120 | /** |
121 | * drm_ctxbitmap_flush() - Flush all contexts owned by a file | |
122 | * @dev: DRM device to operate on | |
123 | * @file: Open file to flush contexts for | |
124 | * | |
125 | * This iterates over all contexts on @dev and drops them if they're owned by | |
126 | * @file. Note that after this call returns, new contexts might be added if | |
127 | * the file is still alive. | |
128 | */ | |
e7b96070 | 129 | void drm_legacy_ctxbitmap_flush(struct drm_device *dev, struct drm_file *file) |
9f8d21ea DH |
130 | { |
131 | struct drm_ctx_list *pos, *tmp; | |
132 | ||
0e975980 PA |
133 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
134 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
135 | return; | |
136 | ||
9f8d21ea DH |
137 | mutex_lock(&dev->ctxlist_mutex); |
138 | ||
139 | list_for_each_entry_safe(pos, tmp, &dev->ctxlist, head) { | |
140 | if (pos->tag == file && | |
141 | pos->handle != DRM_KERNEL_CONTEXT) { | |
142 | if (dev->driver->context_dtor) | |
143 | dev->driver->context_dtor(dev, pos->handle); | |
144 | ||
e7b96070 | 145 | drm_legacy_ctxbitmap_free(dev, pos->handle); |
9f8d21ea DH |
146 | list_del(&pos->head); |
147 | kfree(pos); | |
148 | } | |
149 | } | |
150 | ||
151 | mutex_unlock(&dev->ctxlist_mutex); | |
152 | } | |
153 | ||
1da177e4 LT |
154 | /*@}*/ |
155 | ||
156 | /******************************************************************/ | |
157 | /** \name Per Context SAREA Support */ | |
158 | /*@{*/ | |
159 | ||
160 | /** | |
161 | * Get per-context SAREA. | |
b5e89ed5 | 162 | * |
1da177e4 | 163 | * \param inode device inode. |
6c340eac | 164 | * \param file_priv DRM file private. |
1da177e4 LT |
165 | * \param cmd command. |
166 | * \param arg user argument pointing to a drm_ctx_priv_map structure. | |
167 | * \return zero on success or a negative number on failure. | |
168 | * | |
62968144 | 169 | * Gets the map from drm_device::ctx_idr with the handle specified and |
1da177e4 LT |
170 | * returns its handle. |
171 | */ | |
e7b96070 DH |
172 | int drm_legacy_getsareactx(struct drm_device *dev, void *data, |
173 | struct drm_file *file_priv) | |
1da177e4 | 174 | { |
c153f45f | 175 | struct drm_ctx_priv_map *request = data; |
f77d390c | 176 | struct drm_local_map *map; |
55910517 | 177 | struct drm_map_list *_entry; |
1da177e4 | 178 | |
0e975980 PA |
179 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
180 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
181 | return -EINVAL; | |
182 | ||
30e2fb18 | 183 | mutex_lock(&dev->struct_mutex); |
62968144 | 184 | |
c153f45f | 185 | map = idr_find(&dev->ctx_idr, request->ctx_id); |
62968144 | 186 | if (!map) { |
30e2fb18 | 187 | mutex_unlock(&dev->struct_mutex); |
1da177e4 LT |
188 | return -EINVAL; |
189 | } | |
190 | ||
c153f45f | 191 | request->handle = NULL; |
bd1b331f | 192 | list_for_each_entry(_entry, &dev->maplist, head) { |
d1f2b55a | 193 | if (_entry->map == map) { |
bc5f4523 | 194 | request->handle = |
b5e89ed5 | 195 | (void *)(unsigned long)_entry->user_token; |
d1f2b55a DA |
196 | break; |
197 | } | |
198 | } | |
09b4ea47 IH |
199 | |
200 | mutex_unlock(&dev->struct_mutex); | |
201 | ||
c153f45f | 202 | if (request->handle == NULL) |
d1f2b55a DA |
203 | return -EINVAL; |
204 | ||
1da177e4 LT |
205 | return 0; |
206 | } | |
207 | ||
208 | /** | |
209 | * Set per-context SAREA. | |
b5e89ed5 | 210 | * |
1da177e4 | 211 | * \param inode device inode. |
6c340eac | 212 | * \param file_priv DRM file private. |
1da177e4 LT |
213 | * \param cmd command. |
214 | * \param arg user argument pointing to a drm_ctx_priv_map structure. | |
215 | * \return zero on success or a negative number on failure. | |
216 | * | |
217 | * Searches the mapping specified in \p arg and update the entry in | |
62968144 | 218 | * drm_device::ctx_idr with it. |
1da177e4 | 219 | */ |
e7b96070 DH |
220 | int drm_legacy_setsareactx(struct drm_device *dev, void *data, |
221 | struct drm_file *file_priv) | |
1da177e4 | 222 | { |
c153f45f | 223 | struct drm_ctx_priv_map *request = data; |
f77d390c | 224 | struct drm_local_map *map = NULL; |
55910517 | 225 | struct drm_map_list *r_list = NULL; |
1da177e4 | 226 | |
0e975980 PA |
227 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
228 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
229 | return -EINVAL; | |
230 | ||
30e2fb18 | 231 | mutex_lock(&dev->struct_mutex); |
bd1b331f | 232 | list_for_each_entry(r_list, &dev->maplist, head) { |
9a186645 | 233 | if (r_list->map |
c153f45f | 234 | && r_list->user_token == (unsigned long) request->handle) |
1da177e4 LT |
235 | goto found; |
236 | } | |
b5e89ed5 | 237 | bad: |
30e2fb18 | 238 | mutex_unlock(&dev->struct_mutex); |
1da177e4 LT |
239 | return -EINVAL; |
240 | ||
b5e89ed5 | 241 | found: |
1da177e4 | 242 | map = r_list->map; |
b5e89ed5 DA |
243 | if (!map) |
244 | goto bad; | |
62968144 | 245 | |
c153f45f | 246 | if (IS_ERR(idr_replace(&dev->ctx_idr, map, request->ctx_id))) |
1da177e4 | 247 | goto bad; |
62968144 | 248 | |
30e2fb18 | 249 | mutex_unlock(&dev->struct_mutex); |
c153f45f | 250 | |
1da177e4 LT |
251 | return 0; |
252 | } | |
253 | ||
254 | /*@}*/ | |
255 | ||
256 | /******************************************************************/ | |
257 | /** \name The actual DRM context handling routines */ | |
258 | /*@{*/ | |
259 | ||
260 | /** | |
261 | * Switch context. | |
262 | * | |
263 | * \param dev DRM device. | |
264 | * \param old old context handle. | |
265 | * \param new new context handle. | |
266 | * \return zero on success or a negative number on failure. | |
267 | * | |
268 | * Attempt to set drm_device::context_flag. | |
269 | */ | |
84b1fd10 | 270 | static int drm_context_switch(struct drm_device * dev, int old, int new) |
1da177e4 | 271 | { |
b5e89ed5 DA |
272 | if (test_and_set_bit(0, &dev->context_flag)) { |
273 | DRM_ERROR("Reentering -- FIXME\n"); | |
274 | return -EBUSY; | |
275 | } | |
1da177e4 | 276 | |
b5e89ed5 | 277 | DRM_DEBUG("Context switch from %d to %d\n", old, new); |
1da177e4 | 278 | |
b5e89ed5 DA |
279 | if (new == dev->last_context) { |
280 | clear_bit(0, &dev->context_flag); | |
281 | return 0; | |
282 | } | |
1da177e4 | 283 | |
b5e89ed5 | 284 | return 0; |
1da177e4 LT |
285 | } |
286 | ||
287 | /** | |
288 | * Complete context switch. | |
289 | * | |
290 | * \param dev DRM device. | |
291 | * \param new new context handle. | |
292 | * \return zero on success or a negative number on failure. | |
293 | * | |
294 | * Updates drm_device::last_context and drm_device::last_switch. Verifies the | |
295 | * hardware lock is held, clears the drm_device::context_flag and wakes up | |
296 | * drm_device::context_wait. | |
297 | */ | |
7c1c2871 DA |
298 | static int drm_context_switch_complete(struct drm_device *dev, |
299 | struct drm_file *file_priv, int new) | |
1da177e4 | 300 | { |
b5e89ed5 | 301 | dev->last_context = new; /* PRE/POST: This is the _only_ writer. */ |
1da177e4 | 302 | |
7c1c2871 | 303 | if (!_DRM_LOCK_IS_HELD(file_priv->master->lock.hw_lock->lock)) { |
b5e89ed5 DA |
304 | DRM_ERROR("Lock isn't held after context switch\n"); |
305 | } | |
1da177e4 | 306 | |
b5e89ed5 DA |
307 | /* If a context switch is ever initiated |
308 | when the kernel holds the lock, release | |
309 | that lock here. */ | |
310 | clear_bit(0, &dev->context_flag); | |
1da177e4 | 311 | |
b5e89ed5 | 312 | return 0; |
1da177e4 LT |
313 | } |
314 | ||
315 | /** | |
316 | * Reserve contexts. | |
317 | * | |
318 | * \param inode device inode. | |
6c340eac | 319 | * \param file_priv DRM file private. |
1da177e4 LT |
320 | * \param cmd command. |
321 | * \param arg user argument pointing to a drm_ctx_res structure. | |
322 | * \return zero on success or a negative number on failure. | |
323 | */ | |
e7b96070 DH |
324 | int drm_legacy_resctx(struct drm_device *dev, void *data, |
325 | struct drm_file *file_priv) | |
1da177e4 | 326 | { |
c153f45f | 327 | struct drm_ctx_res *res = data; |
c60ce623 | 328 | struct drm_ctx ctx; |
1da177e4 LT |
329 | int i; |
330 | ||
0e975980 PA |
331 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
332 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
333 | return -EINVAL; | |
334 | ||
c153f45f | 335 | if (res->count >= DRM_RESERVED_CONTEXTS) { |
b5e89ed5 DA |
336 | memset(&ctx, 0, sizeof(ctx)); |
337 | for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) { | |
1da177e4 | 338 | ctx.handle = i; |
c153f45f | 339 | if (copy_to_user(&res->contexts[i], &ctx, sizeof(ctx))) |
1da177e4 LT |
340 | return -EFAULT; |
341 | } | |
342 | } | |
c153f45f | 343 | res->count = DRM_RESERVED_CONTEXTS; |
1da177e4 | 344 | |
1da177e4 LT |
345 | return 0; |
346 | } | |
347 | ||
348 | /** | |
349 | * Add context. | |
350 | * | |
351 | * \param inode device inode. | |
6c340eac | 352 | * \param file_priv DRM file private. |
1da177e4 LT |
353 | * \param cmd command. |
354 | * \param arg user argument pointing to a drm_ctx structure. | |
355 | * \return zero on success or a negative number on failure. | |
356 | * | |
357 | * Get a new handle for the context and copy to userspace. | |
358 | */ | |
e7b96070 DH |
359 | int drm_legacy_addctx(struct drm_device *dev, void *data, |
360 | struct drm_file *file_priv) | |
1da177e4 | 361 | { |
55910517 | 362 | struct drm_ctx_list *ctx_entry; |
c153f45f | 363 | struct drm_ctx *ctx = data; |
1da177e4 | 364 | |
0e975980 PA |
365 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
366 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
367 | return -EINVAL; | |
368 | ||
e7b96070 | 369 | ctx->handle = drm_legacy_ctxbitmap_next(dev); |
c153f45f | 370 | if (ctx->handle == DRM_KERNEL_CONTEXT) { |
b5e89ed5 | 371 | /* Skip kernel's context and get a new one. */ |
e7b96070 | 372 | ctx->handle = drm_legacy_ctxbitmap_next(dev); |
1da177e4 | 373 | } |
c153f45f EA |
374 | DRM_DEBUG("%d\n", ctx->handle); |
375 | if (ctx->handle == -1) { | |
b5e89ed5 DA |
376 | DRM_DEBUG("Not enough free contexts.\n"); |
377 | /* Should this return -EBUSY instead? */ | |
1da177e4 LT |
378 | return -ENOMEM; |
379 | } | |
380 | ||
9a298b2a | 381 | ctx_entry = kmalloc(sizeof(*ctx_entry), GFP_KERNEL); |
b5e89ed5 | 382 | if (!ctx_entry) { |
1da177e4 LT |
383 | DRM_DEBUG("out of memory\n"); |
384 | return -ENOMEM; | |
385 | } | |
386 | ||
b5e89ed5 | 387 | INIT_LIST_HEAD(&ctx_entry->head); |
c153f45f | 388 | ctx_entry->handle = ctx->handle; |
6c340eac | 389 | ctx_entry->tag = file_priv; |
1da177e4 | 390 | |
30e2fb18 | 391 | mutex_lock(&dev->ctxlist_mutex); |
bd1b331f | 392 | list_add(&ctx_entry->head, &dev->ctxlist); |
30e2fb18 | 393 | mutex_unlock(&dev->ctxlist_mutex); |
1da177e4 | 394 | |
1da177e4 LT |
395 | return 0; |
396 | } | |
397 | ||
1da177e4 LT |
398 | /** |
399 | * Get context. | |
400 | * | |
401 | * \param inode device inode. | |
6c340eac | 402 | * \param file_priv DRM file private. |
1da177e4 LT |
403 | * \param cmd command. |
404 | * \param arg user argument pointing to a drm_ctx structure. | |
405 | * \return zero on success or a negative number on failure. | |
406 | */ | |
e7b96070 DH |
407 | int drm_legacy_getctx(struct drm_device *dev, void *data, |
408 | struct drm_file *file_priv) | |
1da177e4 | 409 | { |
c153f45f | 410 | struct drm_ctx *ctx = data; |
1da177e4 | 411 | |
0e975980 PA |
412 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
413 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
414 | return -EINVAL; | |
415 | ||
1da177e4 | 416 | /* This is 0, because we don't handle any context flags */ |
c153f45f | 417 | ctx->flags = 0; |
1da177e4 | 418 | |
1da177e4 LT |
419 | return 0; |
420 | } | |
421 | ||
422 | /** | |
423 | * Switch context. | |
424 | * | |
425 | * \param inode device inode. | |
6c340eac | 426 | * \param file_priv DRM file private. |
1da177e4 LT |
427 | * \param cmd command. |
428 | * \param arg user argument pointing to a drm_ctx structure. | |
429 | * \return zero on success or a negative number on failure. | |
430 | * | |
431 | * Calls context_switch(). | |
432 | */ | |
e7b96070 DH |
433 | int drm_legacy_switchctx(struct drm_device *dev, void *data, |
434 | struct drm_file *file_priv) | |
1da177e4 | 435 | { |
c153f45f | 436 | struct drm_ctx *ctx = data; |
1da177e4 | 437 | |
0e975980 PA |
438 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
439 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
440 | return -EINVAL; | |
441 | ||
c153f45f EA |
442 | DRM_DEBUG("%d\n", ctx->handle); |
443 | return drm_context_switch(dev, dev->last_context, ctx->handle); | |
1da177e4 LT |
444 | } |
445 | ||
446 | /** | |
447 | * New context. | |
448 | * | |
449 | * \param inode device inode. | |
6c340eac | 450 | * \param file_priv DRM file private. |
1da177e4 LT |
451 | * \param cmd command. |
452 | * \param arg user argument pointing to a drm_ctx structure. | |
453 | * \return zero on success or a negative number on failure. | |
454 | * | |
455 | * Calls context_switch_complete(). | |
456 | */ | |
e7b96070 DH |
457 | int drm_legacy_newctx(struct drm_device *dev, void *data, |
458 | struct drm_file *file_priv) | |
1da177e4 | 459 | { |
c153f45f | 460 | struct drm_ctx *ctx = data; |
1da177e4 | 461 | |
0e975980 PA |
462 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
463 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
464 | return -EINVAL; | |
465 | ||
c153f45f | 466 | DRM_DEBUG("%d\n", ctx->handle); |
7c1c2871 | 467 | drm_context_switch_complete(dev, file_priv, ctx->handle); |
1da177e4 LT |
468 | |
469 | return 0; | |
470 | } | |
471 | ||
472 | /** | |
473 | * Remove context. | |
474 | * | |
475 | * \param inode device inode. | |
6c340eac | 476 | * \param file_priv DRM file private. |
1da177e4 LT |
477 | * \param cmd command. |
478 | * \param arg user argument pointing to a drm_ctx structure. | |
479 | * \return zero on success or a negative number on failure. | |
480 | * | |
481 | * If not the special kernel context, calls ctxbitmap_free() to free the specified context. | |
482 | */ | |
e7b96070 DH |
483 | int drm_legacy_rmctx(struct drm_device *dev, void *data, |
484 | struct drm_file *file_priv) | |
1da177e4 | 485 | { |
c153f45f | 486 | struct drm_ctx *ctx = data; |
1da177e4 | 487 | |
0e975980 PA |
488 | if (!drm_core_check_feature(dev, DRIVER_KMS_LEGACY_CONTEXT) && |
489 | drm_core_check_feature(dev, DRIVER_MODESET)) | |
490 | return -EINVAL; | |
491 | ||
c153f45f | 492 | DRM_DEBUG("%d\n", ctx->handle); |
c153f45f | 493 | if (ctx->handle != DRM_KERNEL_CONTEXT) { |
1da177e4 | 494 | if (dev->driver->context_dtor) |
c153f45f | 495 | dev->driver->context_dtor(dev, ctx->handle); |
e7b96070 | 496 | drm_legacy_ctxbitmap_free(dev, ctx->handle); |
1da177e4 LT |
497 | } |
498 | ||
30e2fb18 | 499 | mutex_lock(&dev->ctxlist_mutex); |
bd1b331f | 500 | if (!list_empty(&dev->ctxlist)) { |
55910517 | 501 | struct drm_ctx_list *pos, *n; |
1da177e4 | 502 | |
bd1b331f | 503 | list_for_each_entry_safe(pos, n, &dev->ctxlist, head) { |
c153f45f | 504 | if (pos->handle == ctx->handle) { |
b5e89ed5 | 505 | list_del(&pos->head); |
9a298b2a | 506 | kfree(pos); |
1da177e4 LT |
507 | } |
508 | } | |
509 | } | |
30e2fb18 | 510 | mutex_unlock(&dev->ctxlist_mutex); |
1da177e4 LT |
511 | |
512 | return 0; | |
513 | } | |
514 | ||
515 | /*@}*/ |