Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /** |
d985c108 | 2 | * \file drm_agpsupport.c |
1da177e4 | 3 | * DRM support for AGP/GART backend |
b5e89ed5 | 4 | * |
1da177e4 LT |
5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> |
6 | * \author Gareth Hughes <gareth@valinux.com> | |
7 | */ | |
8 | ||
9 | /* | |
10 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. | |
11 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. | |
12 | * All Rights Reserved. | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a | |
15 | * copy of this software and associated documentation files (the "Software"), | |
16 | * to deal in the Software without restriction, including without limitation | |
17 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
18 | * and/or sell copies of the Software, and to permit persons to whom the | |
19 | * Software is furnished to do so, subject to the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice (including the next | |
22 | * paragraph) shall be included in all copies or substantial portions of the | |
23 | * Software. | |
24 | * | |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
26 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
27 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
28 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
29 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
30 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
31 | * OTHER DEALINGS IN THE SOFTWARE. | |
32 | */ | |
33 | ||
34 | #include "drmP.h" | |
35 | #include <linux/module.h> | |
673a394b | 36 | #include <asm/agp.h> |
1da177e4 LT |
37 | |
38 | #if __OS_HAS_AGP | |
39 | ||
40 | /** | |
7ab98401 | 41 | * Get AGP information. |
1da177e4 LT |
42 | * |
43 | * \param inode device inode. | |
6c340eac | 44 | * \param file_priv DRM file private. |
1da177e4 LT |
45 | * \param cmd command. |
46 | * \param arg pointer to a (output) drm_agp_info structure. | |
47 | * \return zero on success or a negative number on failure. | |
48 | * | |
49 | * Verifies the AGP device has been initialized and acquired and fills in the | |
50 | * drm_agp_info structure with the information in drm_agp_head::agp_info. | |
51 | */ | |
84b1fd10 | 52 | int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info) |
1da177e4 | 53 | { |
b5e89ed5 | 54 | DRM_AGP_KERN *kern; |
1da177e4 LT |
55 | |
56 | if (!dev->agp || !dev->agp->acquired) | |
57 | return -EINVAL; | |
58 | ||
b5e89ed5 | 59 | kern = &dev->agp->agp_info; |
7ab98401 DA |
60 | info->agp_version_major = kern->version.major; |
61 | info->agp_version_minor = kern->version.minor; | |
b5e89ed5 DA |
62 | info->mode = kern->mode; |
63 | info->aperture_base = kern->aper_base; | |
64 | info->aperture_size = kern->aper_size * 1024 * 1024; | |
65 | info->memory_allowed = kern->max_memory << PAGE_SHIFT; | |
66 | info->memory_used = kern->current_memory << PAGE_SHIFT; | |
67 | info->id_vendor = kern->device->vendor; | |
68 | info->id_device = kern->device->device; | |
7ab98401 DA |
69 | |
70 | return 0; | |
71 | } | |
b5e89ed5 | 72 | |
7ab98401 DA |
73 | EXPORT_SYMBOL(drm_agp_info); |
74 | ||
c153f45f EA |
75 | int drm_agp_info_ioctl(struct drm_device *dev, void *data, |
76 | struct drm_file *file_priv) | |
7ab98401 | 77 | { |
c153f45f | 78 | struct drm_agp_info *info = data; |
7ab98401 DA |
79 | int err; |
80 | ||
c153f45f | 81 | err = drm_agp_info(dev, info); |
7ab98401 DA |
82 | if (err) |
83 | return err; | |
b5e89ed5 | 84 | |
1da177e4 LT |
85 | return 0; |
86 | } | |
87 | ||
88 | /** | |
7ab98401 | 89 | * Acquire the AGP device. |
1da177e4 | 90 | * |
d985c108 | 91 | * \param dev DRM device that is to acquire AGP. |
b5e89ed5 | 92 | * \return zero on success or a negative number on failure. |
1da177e4 LT |
93 | * |
94 | * Verifies the AGP device hasn't been acquired before and calls | |
7ab98401 | 95 | * \c agp_backend_acquire. |
1da177e4 | 96 | */ |
84b1fd10 | 97 | int drm_agp_acquire(struct drm_device * dev) |
1da177e4 | 98 | { |
1da177e4 LT |
99 | if (!dev->agp) |
100 | return -ENODEV; | |
101 | if (dev->agp->acquired) | |
102 | return -EBUSY; | |
103 | if (!(dev->agp->bridge = agp_backend_acquire(dev->pdev))) | |
104 | return -ENODEV; | |
105 | dev->agp->acquired = 1; | |
106 | return 0; | |
107 | } | |
b5e89ed5 | 108 | |
7ab98401 | 109 | EXPORT_SYMBOL(drm_agp_acquire); |
1da177e4 LT |
110 | |
111 | /** | |
7ab98401 | 112 | * Acquire the AGP device (ioctl). |
1da177e4 LT |
113 | * |
114 | * \param inode device inode. | |
6c340eac | 115 | * \param file_priv DRM file private. |
1da177e4 LT |
116 | * \param cmd command. |
117 | * \param arg user argument. | |
118 | * \return zero on success or a negative number on failure. | |
119 | * | |
7ab98401 DA |
120 | * Verifies the AGP device hasn't been acquired before and calls |
121 | * \c agp_backend_acquire. | |
1da177e4 | 122 | */ |
c153f45f EA |
123 | int drm_agp_acquire_ioctl(struct drm_device *dev, void *data, |
124 | struct drm_file *file_priv) | |
1da177e4 | 125 | { |
2c14f28b | 126 | return drm_agp_acquire((struct drm_device *) file_priv->minor->dev); |
7ab98401 | 127 | } |
1da177e4 | 128 | |
7ab98401 DA |
129 | /** |
130 | * Release the AGP device. | |
131 | * | |
d985c108 | 132 | * \param dev DRM device that is to release AGP. |
7ab98401 DA |
133 | * \return zero on success or a negative number on failure. |
134 | * | |
135 | * Verifies the AGP device has been acquired and calls \c agp_backend_release. | |
136 | */ | |
84b1fd10 | 137 | int drm_agp_release(struct drm_device * dev) |
7ab98401 | 138 | { |
1da177e4 LT |
139 | if (!dev->agp || !dev->agp->acquired) |
140 | return -EINVAL; | |
141 | agp_backend_release(dev->agp->bridge); | |
142 | dev->agp->acquired = 0; | |
143 | return 0; | |
1da177e4 | 144 | } |
7ab98401 | 145 | EXPORT_SYMBOL(drm_agp_release); |
1da177e4 | 146 | |
c153f45f EA |
147 | int drm_agp_release_ioctl(struct drm_device *dev, void *data, |
148 | struct drm_file *file_priv) | |
1da177e4 | 149 | { |
7ab98401 | 150 | return drm_agp_release(dev); |
1da177e4 LT |
151 | } |
152 | ||
153 | /** | |
154 | * Enable the AGP bus. | |
b5e89ed5 | 155 | * |
7ab98401 DA |
156 | * \param dev DRM device that has previously acquired AGP. |
157 | * \param mode Requested AGP mode. | |
1da177e4 LT |
158 | * \return zero on success or a negative number on failure. |
159 | * | |
160 | * Verifies the AGP device has been acquired but not enabled, and calls | |
7ab98401 | 161 | * \c agp_enable. |
1da177e4 | 162 | */ |
84b1fd10 | 163 | int drm_agp_enable(struct drm_device * dev, struct drm_agp_mode mode) |
1da177e4 | 164 | { |
1da177e4 LT |
165 | if (!dev->agp || !dev->agp->acquired) |
166 | return -EINVAL; | |
167 | ||
b5e89ed5 | 168 | dev->agp->mode = mode.mode; |
1da177e4 | 169 | agp_enable(dev->agp->bridge, mode.mode); |
1da177e4 LT |
170 | dev->agp->enabled = 1; |
171 | return 0; | |
172 | } | |
b5e89ed5 | 173 | |
7ab98401 DA |
174 | EXPORT_SYMBOL(drm_agp_enable); |
175 | ||
c153f45f EA |
176 | int drm_agp_enable_ioctl(struct drm_device *dev, void *data, |
177 | struct drm_file *file_priv) | |
7ab98401 | 178 | { |
c153f45f | 179 | struct drm_agp_mode *mode = data; |
7ab98401 | 180 | |
c153f45f | 181 | return drm_agp_enable(dev, *mode); |
7ab98401 | 182 | } |
1da177e4 LT |
183 | |
184 | /** | |
185 | * Allocate AGP memory. | |
186 | * | |
187 | * \param inode device inode. | |
6c340eac | 188 | * \param file_priv file private pointer. |
1da177e4 LT |
189 | * \param cmd command. |
190 | * \param arg pointer to a drm_agp_buffer structure. | |
191 | * \return zero on success or a negative number on failure. | |
b5e89ed5 | 192 | * |
1da177e4 LT |
193 | * Verifies the AGP device is present and has been acquired, allocates the |
194 | * memory via alloc_agp() and creates a drm_agp_mem entry for it. | |
195 | */ | |
84b1fd10 | 196 | int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request) |
1da177e4 | 197 | { |
55910517 | 198 | struct drm_agp_mem *entry; |
b5e89ed5 DA |
199 | DRM_AGP_MEM *memory; |
200 | unsigned long pages; | |
201 | u32 type; | |
1da177e4 LT |
202 | |
203 | if (!dev->agp || !dev->agp->acquired) | |
204 | return -EINVAL; | |
1da177e4 LT |
205 | if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS))) |
206 | return -ENOMEM; | |
207 | ||
b5e89ed5 | 208 | memset(entry, 0, sizeof(*entry)); |
1da177e4 | 209 | |
efa58395 DA |
210 | pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE; |
211 | type = (u32) request->type; | |
b5d499cf | 212 | if (!(memory = drm_alloc_agp(dev, pages, type))) { |
1da177e4 LT |
213 | drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); |
214 | return -ENOMEM; | |
215 | } | |
216 | ||
b5e89ed5 DA |
217 | entry->handle = (unsigned long)memory->key + 1; |
218 | entry->memory = memory; | |
219 | entry->bound = 0; | |
220 | entry->pages = pages; | |
bd1b331f | 221 | list_add(&entry->head, &dev->agp->memory); |
1da177e4 | 222 | |
efa58395 DA |
223 | request->handle = entry->handle; |
224 | request->physical = memory->physical; | |
225 | ||
226 | return 0; | |
227 | } | |
228 | EXPORT_SYMBOL(drm_agp_alloc); | |
229 | ||
efa58395 | 230 | |
c153f45f EA |
231 | int drm_agp_alloc_ioctl(struct drm_device *dev, void *data, |
232 | struct drm_file *file_priv) | |
233 | { | |
234 | struct drm_agp_buffer *request = data; | |
efa58395 | 235 | |
c153f45f | 236 | return drm_agp_alloc(dev, request); |
1da177e4 LT |
237 | } |
238 | ||
239 | /** | |
240 | * Search for the AGP memory entry associated with a handle. | |
241 | * | |
242 | * \param dev DRM device structure. | |
243 | * \param handle AGP memory handle. | |
244 | * \return pointer to the drm_agp_mem structure associated with \p handle. | |
b5e89ed5 | 245 | * |
1da177e4 LT |
246 | * Walks through drm_agp_head::memory until finding a matching handle. |
247 | */ | |
55910517 | 248 | static struct drm_agp_mem *drm_agp_lookup_entry(struct drm_device * dev, |
b5e89ed5 | 249 | unsigned long handle) |
1da177e4 | 250 | { |
55910517 | 251 | struct drm_agp_mem *entry; |
1da177e4 | 252 | |
bd1b331f | 253 | list_for_each_entry(entry, &dev->agp->memory, head) { |
1da177e4 LT |
254 | if (entry->handle == handle) |
255 | return entry; | |
256 | } | |
257 | return NULL; | |
258 | } | |
259 | ||
260 | /** | |
261 | * Unbind AGP memory from the GATT (ioctl). | |
262 | * | |
263 | * \param inode device inode. | |
6c340eac | 264 | * \param file_priv DRM file private. |
1da177e4 LT |
265 | * \param cmd command. |
266 | * \param arg pointer to a drm_agp_binding structure. | |
267 | * \return zero on success or a negative number on failure. | |
268 | * | |
269 | * Verifies the AGP device is present and acquired, looks-up the AGP memory | |
270 | * entry and passes it to the unbind_agp() function. | |
271 | */ | |
84b1fd10 | 272 | int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request) |
1da177e4 | 273 | { |
55910517 | 274 | struct drm_agp_mem *entry; |
1da177e4 LT |
275 | int ret; |
276 | ||
277 | if (!dev->agp || !dev->agp->acquired) | |
278 | return -EINVAL; | |
efa58395 | 279 | if (!(entry = drm_agp_lookup_entry(dev, request->handle))) |
1da177e4 LT |
280 | return -EINVAL; |
281 | if (!entry->bound) | |
282 | return -EINVAL; | |
283 | ret = drm_unbind_agp(entry->memory); | |
284 | if (ret == 0) | |
b5e89ed5 | 285 | entry->bound = 0; |
1da177e4 LT |
286 | return ret; |
287 | } | |
efa58395 DA |
288 | EXPORT_SYMBOL(drm_agp_unbind); |
289 | ||
efa58395 | 290 | |
c153f45f EA |
291 | int drm_agp_unbind_ioctl(struct drm_device *dev, void *data, |
292 | struct drm_file *file_priv) | |
293 | { | |
294 | struct drm_agp_binding *request = data; | |
efa58395 | 295 | |
c153f45f | 296 | return drm_agp_unbind(dev, request); |
efa58395 | 297 | } |
1da177e4 LT |
298 | |
299 | /** | |
300 | * Bind AGP memory into the GATT (ioctl) | |
301 | * | |
302 | * \param inode device inode. | |
6c340eac | 303 | * \param file_priv DRM file private. |
1da177e4 LT |
304 | * \param cmd command. |
305 | * \param arg pointer to a drm_agp_binding structure. | |
306 | * \return zero on success or a negative number on failure. | |
307 | * | |
308 | * Verifies the AGP device is present and has been acquired and that no memory | |
309 | * is currently bound into the GATT. Looks-up the AGP memory entry and passes | |
310 | * it to bind_agp() function. | |
311 | */ | |
84b1fd10 | 312 | int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request) |
1da177e4 | 313 | { |
55910517 | 314 | struct drm_agp_mem *entry; |
b5e89ed5 DA |
315 | int retcode; |
316 | int page; | |
1da177e4 LT |
317 | |
318 | if (!dev->agp || !dev->agp->acquired) | |
319 | return -EINVAL; | |
efa58395 | 320 | if (!(entry = drm_agp_lookup_entry(dev, request->handle))) |
1da177e4 LT |
321 | return -EINVAL; |
322 | if (entry->bound) | |
323 | return -EINVAL; | |
efa58395 | 324 | page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE; |
1da177e4 LT |
325 | if ((retcode = drm_bind_agp(entry->memory, page))) |
326 | return retcode; | |
327 | entry->bound = dev->agp->base + (page << PAGE_SHIFT); | |
328 | DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n", | |
329 | dev->agp->base, entry->bound); | |
330 | return 0; | |
331 | } | |
efa58395 DA |
332 | EXPORT_SYMBOL(drm_agp_bind); |
333 | ||
efa58395 | 334 | |
c153f45f EA |
335 | int drm_agp_bind_ioctl(struct drm_device *dev, void *data, |
336 | struct drm_file *file_priv) | |
337 | { | |
338 | struct drm_agp_binding *request = data; | |
efa58395 | 339 | |
c153f45f | 340 | return drm_agp_bind(dev, request); |
efa58395 | 341 | } |
1da177e4 LT |
342 | |
343 | /** | |
344 | * Free AGP memory (ioctl). | |
345 | * | |
346 | * \param inode device inode. | |
6c340eac | 347 | * \param file_priv DRM file private. |
1da177e4 LT |
348 | * \param cmd command. |
349 | * \param arg pointer to a drm_agp_buffer structure. | |
350 | * \return zero on success or a negative number on failure. | |
351 | * | |
352 | * Verifies the AGP device is present and has been acquired and looks up the | |
353 | * AGP memory entry. If the memory it's currently bound, unbind it via | |
354 | * unbind_agp(). Frees it via free_agp() as well as the entry itself | |
355 | * and unlinks from the doubly linked list it's inserted in. | |
356 | */ | |
84b1fd10 | 357 | int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request) |
1da177e4 | 358 | { |
55910517 | 359 | struct drm_agp_mem *entry; |
1da177e4 LT |
360 | |
361 | if (!dev->agp || !dev->agp->acquired) | |
362 | return -EINVAL; | |
efa58395 | 363 | if (!(entry = drm_agp_lookup_entry(dev, request->handle))) |
1da177e4 LT |
364 | return -EINVAL; |
365 | if (entry->bound) | |
366 | drm_unbind_agp(entry->memory); | |
367 | ||
bd1b331f | 368 | list_del(&entry->head); |
1da177e4 LT |
369 | |
370 | drm_free_agp(entry->memory, entry->pages); | |
371 | drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); | |
372 | return 0; | |
373 | } | |
efa58395 DA |
374 | EXPORT_SYMBOL(drm_agp_free); |
375 | ||
efa58395 | 376 | |
efa58395 | 377 | |
c153f45f EA |
378 | int drm_agp_free_ioctl(struct drm_device *dev, void *data, |
379 | struct drm_file *file_priv) | |
380 | { | |
381 | struct drm_agp_buffer *request = data; | |
382 | ||
383 | return drm_agp_free(dev, request); | |
efa58395 | 384 | } |
1da177e4 LT |
385 | |
386 | /** | |
387 | * Initialize the AGP resources. | |
388 | * | |
389 | * \return pointer to a drm_agp_head structure. | |
390 | * | |
d985c108 DA |
391 | * Gets the drm_agp_t structure which is made available by the agpgart module |
392 | * via the inter_module_* functions. Creates and initializes a drm_agp_head | |
393 | * structure. | |
1da177e4 | 394 | */ |
55910517 | 395 | struct drm_agp_head *drm_agp_init(struct drm_device *dev) |
1da177e4 | 396 | { |
55910517 | 397 | struct drm_agp_head *head = NULL; |
1da177e4 LT |
398 | |
399 | if (!(head = drm_alloc(sizeof(*head), DRM_MEM_AGPLISTS))) | |
400 | return NULL; | |
401 | memset((void *)head, 0, sizeof(*head)); | |
402 | head->bridge = agp_find_bridge(dev->pdev); | |
403 | if (!head->bridge) { | |
404 | if (!(head->bridge = agp_backend_acquire(dev->pdev))) { | |
405 | drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS); | |
406 | return NULL; | |
407 | } | |
408 | agp_copy_info(head->bridge, &head->agp_info); | |
409 | agp_backend_release(head->bridge); | |
410 | } else { | |
411 | agp_copy_info(head->bridge, &head->agp_info); | |
412 | } | |
413 | if (head->agp_info.chipset == NOT_SUPPORTED) { | |
414 | drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS); | |
415 | return NULL; | |
416 | } | |
bd1b331f | 417 | INIT_LIST_HEAD(&head->memory); |
1da177e4 LT |
418 | head->cant_use_aperture = head->agp_info.cant_use_aperture; |
419 | head->page_mask = head->agp_info.page_mask; | |
8b409580 | 420 | head->base = head->agp_info.aper_base; |
1da177e4 LT |
421 | return head; |
422 | } | |
423 | ||
424 | /** Calls agp_allocate_memory() */ | |
b5e89ed5 DA |
425 | DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data * bridge, |
426 | size_t pages, u32 type) | |
1da177e4 LT |
427 | { |
428 | return agp_allocate_memory(bridge, pages, type); | |
429 | } | |
430 | ||
431 | /** Calls agp_free_memory() */ | |
b5e89ed5 | 432 | int drm_agp_free_memory(DRM_AGP_MEM * handle) |
1da177e4 LT |
433 | { |
434 | if (!handle) | |
435 | return 0; | |
436 | agp_free_memory(handle); | |
437 | return 1; | |
438 | } | |
439 | ||
440 | /** Calls agp_bind_memory() */ | |
b5e89ed5 | 441 | int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start) |
1da177e4 LT |
442 | { |
443 | if (!handle) | |
444 | return -EINVAL; | |
445 | return agp_bind_memory(handle, start); | |
446 | } | |
b5e89ed5 | 447 | |
1da177e4 | 448 | /** Calls agp_unbind_memory() */ |
b5e89ed5 | 449 | int drm_agp_unbind_memory(DRM_AGP_MEM * handle) |
1da177e4 LT |
450 | { |
451 | if (!handle) | |
452 | return -EINVAL; | |
453 | return agp_unbind_memory(handle); | |
454 | } | |
455 | ||
673a394b EA |
456 | /** |
457 | * Binds a collection of pages into AGP memory at the given offset, returning | |
458 | * the AGP memory structure containing them. | |
459 | * | |
460 | * No reference is held on the pages during this time -- it is up to the | |
461 | * caller to handle that. | |
462 | */ | |
463 | DRM_AGP_MEM * | |
464 | drm_agp_bind_pages(struct drm_device *dev, | |
465 | struct page **pages, | |
466 | unsigned long num_pages, | |
467 | uint32_t gtt_offset) | |
468 | { | |
469 | DRM_AGP_MEM *mem; | |
470 | int ret, i; | |
471 | ||
472 | DRM_DEBUG("\n"); | |
473 | ||
474 | mem = drm_agp_allocate_memory(dev->agp->bridge, num_pages, | |
475 | AGP_USER_MEMORY); | |
476 | if (mem == NULL) { | |
477 | DRM_ERROR("Failed to allocate memory for %ld pages\n", | |
478 | num_pages); | |
479 | return NULL; | |
480 | } | |
481 | ||
482 | for (i = 0; i < num_pages; i++) | |
483 | mem->memory[i] = phys_to_gart(page_to_phys(pages[i])); | |
484 | mem->page_count = num_pages; | |
485 | ||
486 | mem->is_flushed = true; | |
487 | ret = drm_agp_bind_memory(mem, gtt_offset / PAGE_SIZE); | |
488 | if (ret != 0) { | |
489 | DRM_ERROR("Failed to bind AGP memory: %d\n", ret); | |
490 | agp_free_memory(mem); | |
491 | return NULL; | |
492 | } | |
493 | ||
494 | return mem; | |
495 | } | |
496 | EXPORT_SYMBOL(drm_agp_bind_pages); | |
497 | ||
498 | void drm_agp_chipset_flush(struct drm_device *dev) | |
499 | { | |
500 | agp_flush_chipset(dev->agp->bridge); | |
501 | } | |
502 | EXPORT_SYMBOL(drm_agp_chipset_flush); | |
503 | ||
504 | #endif /* __OS_HAS_AGP */ |