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> | |
36 | ||
37 | #if __OS_HAS_AGP | |
38 | ||
1bb88edb EA |
39 | #include <asm/agp.h> |
40 | ||
1da177e4 | 41 | /** |
7ab98401 | 42 | * Get AGP information. |
1da177e4 LT |
43 | * |
44 | * \param inode device inode. | |
6c340eac | 45 | * \param file_priv DRM file private. |
1da177e4 LT |
46 | * \param cmd command. |
47 | * \param arg pointer to a (output) drm_agp_info structure. | |
48 | * \return zero on success or a negative number on failure. | |
49 | * | |
50 | * Verifies the AGP device has been initialized and acquired and fills in the | |
51 | * drm_agp_info structure with the information in drm_agp_head::agp_info. | |
52 | */ | |
84b1fd10 | 53 | int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info) |
1da177e4 | 54 | { |
b5e89ed5 | 55 | DRM_AGP_KERN *kern; |
1da177e4 LT |
56 | |
57 | if (!dev->agp || !dev->agp->acquired) | |
58 | return -EINVAL; | |
59 | ||
b5e89ed5 | 60 | kern = &dev->agp->agp_info; |
7ab98401 DA |
61 | info->agp_version_major = kern->version.major; |
62 | info->agp_version_minor = kern->version.minor; | |
b5e89ed5 DA |
63 | info->mode = kern->mode; |
64 | info->aperture_base = kern->aper_base; | |
65 | info->aperture_size = kern->aper_size * 1024 * 1024; | |
66 | info->memory_allowed = kern->max_memory << PAGE_SHIFT; | |
67 | info->memory_used = kern->current_memory << PAGE_SHIFT; | |
68 | info->id_vendor = kern->device->vendor; | |
69 | info->id_device = kern->device->device; | |
7ab98401 DA |
70 | |
71 | return 0; | |
72 | } | |
b5e89ed5 | 73 | |
7ab98401 DA |
74 | EXPORT_SYMBOL(drm_agp_info); |
75 | ||
c153f45f EA |
76 | int drm_agp_info_ioctl(struct drm_device *dev, void *data, |
77 | struct drm_file *file_priv) | |
7ab98401 | 78 | { |
c153f45f | 79 | struct drm_agp_info *info = data; |
7ab98401 DA |
80 | int err; |
81 | ||
c153f45f | 82 | err = drm_agp_info(dev, info); |
7ab98401 DA |
83 | if (err) |
84 | return err; | |
b5e89ed5 | 85 | |
1da177e4 LT |
86 | return 0; |
87 | } | |
88 | ||
89 | /** | |
7ab98401 | 90 | * Acquire the AGP device. |
1da177e4 | 91 | * |
d985c108 | 92 | * \param dev DRM device that is to acquire AGP. |
b5e89ed5 | 93 | * \return zero on success or a negative number on failure. |
1da177e4 LT |
94 | * |
95 | * Verifies the AGP device hasn't been acquired before and calls | |
7ab98401 | 96 | * \c agp_backend_acquire. |
1da177e4 | 97 | */ |
84b1fd10 | 98 | int drm_agp_acquire(struct drm_device * dev) |
1da177e4 | 99 | { |
1da177e4 LT |
100 | if (!dev->agp) |
101 | return -ENODEV; | |
102 | if (dev->agp->acquired) | |
103 | return -EBUSY; | |
104 | if (!(dev->agp->bridge = agp_backend_acquire(dev->pdev))) | |
105 | return -ENODEV; | |
106 | dev->agp->acquired = 1; | |
107 | return 0; | |
108 | } | |
b5e89ed5 | 109 | |
7ab98401 | 110 | EXPORT_SYMBOL(drm_agp_acquire); |
1da177e4 LT |
111 | |
112 | /** | |
7ab98401 | 113 | * Acquire the AGP device (ioctl). |
1da177e4 LT |
114 | * |
115 | * \param inode device inode. | |
6c340eac | 116 | * \param file_priv DRM file private. |
1da177e4 LT |
117 | * \param cmd command. |
118 | * \param arg user argument. | |
119 | * \return zero on success or a negative number on failure. | |
120 | * | |
7ab98401 DA |
121 | * Verifies the AGP device hasn't been acquired before and calls |
122 | * \c agp_backend_acquire. | |
1da177e4 | 123 | */ |
c153f45f EA |
124 | int drm_agp_acquire_ioctl(struct drm_device *dev, void *data, |
125 | struct drm_file *file_priv) | |
1da177e4 | 126 | { |
2c14f28b | 127 | return drm_agp_acquire((struct drm_device *) file_priv->minor->dev); |
7ab98401 | 128 | } |
1da177e4 | 129 | |
7ab98401 DA |
130 | /** |
131 | * Release the AGP device. | |
132 | * | |
d985c108 | 133 | * \param dev DRM device that is to release AGP. |
7ab98401 DA |
134 | * \return zero on success or a negative number on failure. |
135 | * | |
136 | * Verifies the AGP device has been acquired and calls \c agp_backend_release. | |
137 | */ | |
84b1fd10 | 138 | int drm_agp_release(struct drm_device * dev) |
7ab98401 | 139 | { |
1da177e4 LT |
140 | if (!dev->agp || !dev->agp->acquired) |
141 | return -EINVAL; | |
142 | agp_backend_release(dev->agp->bridge); | |
143 | dev->agp->acquired = 0; | |
144 | return 0; | |
1da177e4 | 145 | } |
7ab98401 | 146 | EXPORT_SYMBOL(drm_agp_release); |
1da177e4 | 147 | |
c153f45f EA |
148 | int drm_agp_release_ioctl(struct drm_device *dev, void *data, |
149 | struct drm_file *file_priv) | |
1da177e4 | 150 | { |
7ab98401 | 151 | return drm_agp_release(dev); |
1da177e4 LT |
152 | } |
153 | ||
154 | /** | |
155 | * Enable the AGP bus. | |
b5e89ed5 | 156 | * |
7ab98401 DA |
157 | * \param dev DRM device that has previously acquired AGP. |
158 | * \param mode Requested AGP mode. | |
1da177e4 LT |
159 | * \return zero on success or a negative number on failure. |
160 | * | |
161 | * Verifies the AGP device has been acquired but not enabled, and calls | |
7ab98401 | 162 | * \c agp_enable. |
1da177e4 | 163 | */ |
84b1fd10 | 164 | int drm_agp_enable(struct drm_device * dev, struct drm_agp_mode mode) |
1da177e4 | 165 | { |
1da177e4 LT |
166 | if (!dev->agp || !dev->agp->acquired) |
167 | return -EINVAL; | |
168 | ||
b5e89ed5 | 169 | dev->agp->mode = mode.mode; |
1da177e4 | 170 | agp_enable(dev->agp->bridge, mode.mode); |
1da177e4 LT |
171 | dev->agp->enabled = 1; |
172 | return 0; | |
173 | } | |
b5e89ed5 | 174 | |
7ab98401 DA |
175 | EXPORT_SYMBOL(drm_agp_enable); |
176 | ||
c153f45f EA |
177 | int drm_agp_enable_ioctl(struct drm_device *dev, void *data, |
178 | struct drm_file *file_priv) | |
7ab98401 | 179 | { |
c153f45f | 180 | struct drm_agp_mode *mode = data; |
7ab98401 | 181 | |
c153f45f | 182 | return drm_agp_enable(dev, *mode); |
7ab98401 | 183 | } |
1da177e4 LT |
184 | |
185 | /** | |
186 | * Allocate AGP memory. | |
187 | * | |
188 | * \param inode device inode. | |
6c340eac | 189 | * \param file_priv file private pointer. |
1da177e4 LT |
190 | * \param cmd command. |
191 | * \param arg pointer to a drm_agp_buffer structure. | |
192 | * \return zero on success or a negative number on failure. | |
b5e89ed5 | 193 | * |
1da177e4 LT |
194 | * Verifies the AGP device is present and has been acquired, allocates the |
195 | * memory via alloc_agp() and creates a drm_agp_mem entry for it. | |
196 | */ | |
84b1fd10 | 197 | int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request) |
1da177e4 | 198 | { |
55910517 | 199 | struct drm_agp_mem *entry; |
b5e89ed5 DA |
200 | DRM_AGP_MEM *memory; |
201 | unsigned long pages; | |
202 | u32 type; | |
1da177e4 LT |
203 | |
204 | if (!dev->agp || !dev->agp->acquired) | |
205 | return -EINVAL; | |
1da177e4 LT |
206 | if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS))) |
207 | return -ENOMEM; | |
208 | ||
b5e89ed5 | 209 | memset(entry, 0, sizeof(*entry)); |
1da177e4 | 210 | |
efa58395 DA |
211 | pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE; |
212 | type = (u32) request->type; | |
b5d499cf | 213 | if (!(memory = drm_alloc_agp(dev, pages, type))) { |
1da177e4 LT |
214 | drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); |
215 | return -ENOMEM; | |
216 | } | |
217 | ||
b5e89ed5 DA |
218 | entry->handle = (unsigned long)memory->key + 1; |
219 | entry->memory = memory; | |
220 | entry->bound = 0; | |
221 | entry->pages = pages; | |
bd1b331f | 222 | list_add(&entry->head, &dev->agp->memory); |
1da177e4 | 223 | |
efa58395 DA |
224 | request->handle = entry->handle; |
225 | request->physical = memory->physical; | |
226 | ||
227 | return 0; | |
228 | } | |
229 | EXPORT_SYMBOL(drm_agp_alloc); | |
230 | ||
efa58395 | 231 | |
c153f45f EA |
232 | int drm_agp_alloc_ioctl(struct drm_device *dev, void *data, |
233 | struct drm_file *file_priv) | |
234 | { | |
235 | struct drm_agp_buffer *request = data; | |
efa58395 | 236 | |
c153f45f | 237 | return drm_agp_alloc(dev, request); |
1da177e4 LT |
238 | } |
239 | ||
240 | /** | |
241 | * Search for the AGP memory entry associated with a handle. | |
242 | * | |
243 | * \param dev DRM device structure. | |
244 | * \param handle AGP memory handle. | |
245 | * \return pointer to the drm_agp_mem structure associated with \p handle. | |
b5e89ed5 | 246 | * |
1da177e4 LT |
247 | * Walks through drm_agp_head::memory until finding a matching handle. |
248 | */ | |
55910517 | 249 | static struct drm_agp_mem *drm_agp_lookup_entry(struct drm_device * dev, |
b5e89ed5 | 250 | unsigned long handle) |
1da177e4 | 251 | { |
55910517 | 252 | struct drm_agp_mem *entry; |
1da177e4 | 253 | |
bd1b331f | 254 | list_for_each_entry(entry, &dev->agp->memory, head) { |
1da177e4 LT |
255 | if (entry->handle == handle) |
256 | return entry; | |
257 | } | |
258 | return NULL; | |
259 | } | |
260 | ||
261 | /** | |
262 | * Unbind AGP memory from the GATT (ioctl). | |
263 | * | |
264 | * \param inode device inode. | |
6c340eac | 265 | * \param file_priv DRM file private. |
1da177e4 LT |
266 | * \param cmd command. |
267 | * \param arg pointer to a drm_agp_binding structure. | |
268 | * \return zero on success or a negative number on failure. | |
269 | * | |
270 | * Verifies the AGP device is present and acquired, looks-up the AGP memory | |
271 | * entry and passes it to the unbind_agp() function. | |
272 | */ | |
84b1fd10 | 273 | int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request) |
1da177e4 | 274 | { |
55910517 | 275 | struct drm_agp_mem *entry; |
1da177e4 LT |
276 | int ret; |
277 | ||
278 | if (!dev->agp || !dev->agp->acquired) | |
279 | return -EINVAL; | |
efa58395 | 280 | if (!(entry = drm_agp_lookup_entry(dev, request->handle))) |
1da177e4 LT |
281 | return -EINVAL; |
282 | if (!entry->bound) | |
283 | return -EINVAL; | |
284 | ret = drm_unbind_agp(entry->memory); | |
285 | if (ret == 0) | |
b5e89ed5 | 286 | entry->bound = 0; |
1da177e4 LT |
287 | return ret; |
288 | } | |
efa58395 DA |
289 | EXPORT_SYMBOL(drm_agp_unbind); |
290 | ||
efa58395 | 291 | |
c153f45f EA |
292 | int drm_agp_unbind_ioctl(struct drm_device *dev, void *data, |
293 | struct drm_file *file_priv) | |
294 | { | |
295 | struct drm_agp_binding *request = data; | |
efa58395 | 296 | |
c153f45f | 297 | return drm_agp_unbind(dev, request); |
efa58395 | 298 | } |
1da177e4 LT |
299 | |
300 | /** | |
301 | * Bind AGP memory into the GATT (ioctl) | |
302 | * | |
303 | * \param inode device inode. | |
6c340eac | 304 | * \param file_priv DRM file private. |
1da177e4 LT |
305 | * \param cmd command. |
306 | * \param arg pointer to a drm_agp_binding structure. | |
307 | * \return zero on success or a negative number on failure. | |
308 | * | |
309 | * Verifies the AGP device is present and has been acquired and that no memory | |
310 | * is currently bound into the GATT. Looks-up the AGP memory entry and passes | |
311 | * it to bind_agp() function. | |
312 | */ | |
84b1fd10 | 313 | int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request) |
1da177e4 | 314 | { |
55910517 | 315 | struct drm_agp_mem *entry; |
b5e89ed5 DA |
316 | int retcode; |
317 | int page; | |
1da177e4 LT |
318 | |
319 | if (!dev->agp || !dev->agp->acquired) | |
320 | return -EINVAL; | |
efa58395 | 321 | if (!(entry = drm_agp_lookup_entry(dev, request->handle))) |
1da177e4 LT |
322 | return -EINVAL; |
323 | if (entry->bound) | |
324 | return -EINVAL; | |
efa58395 | 325 | page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE; |
1da177e4 LT |
326 | if ((retcode = drm_bind_agp(entry->memory, page))) |
327 | return retcode; | |
328 | entry->bound = dev->agp->base + (page << PAGE_SHIFT); | |
329 | DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n", | |
330 | dev->agp->base, entry->bound); | |
331 | return 0; | |
332 | } | |
efa58395 DA |
333 | EXPORT_SYMBOL(drm_agp_bind); |
334 | ||
efa58395 | 335 | |
c153f45f EA |
336 | int drm_agp_bind_ioctl(struct drm_device *dev, void *data, |
337 | struct drm_file *file_priv) | |
338 | { | |
339 | struct drm_agp_binding *request = data; | |
efa58395 | 340 | |
c153f45f | 341 | return drm_agp_bind(dev, request); |
efa58395 | 342 | } |
1da177e4 LT |
343 | |
344 | /** | |
345 | * Free AGP memory (ioctl). | |
346 | * | |
347 | * \param inode device inode. | |
6c340eac | 348 | * \param file_priv DRM file private. |
1da177e4 LT |
349 | * \param cmd command. |
350 | * \param arg pointer to a drm_agp_buffer structure. | |
351 | * \return zero on success or a negative number on failure. | |
352 | * | |
353 | * Verifies the AGP device is present and has been acquired and looks up the | |
354 | * AGP memory entry. If the memory it's currently bound, unbind it via | |
355 | * unbind_agp(). Frees it via free_agp() as well as the entry itself | |
356 | * and unlinks from the doubly linked list it's inserted in. | |
357 | */ | |
84b1fd10 | 358 | int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request) |
1da177e4 | 359 | { |
55910517 | 360 | struct drm_agp_mem *entry; |
1da177e4 LT |
361 | |
362 | if (!dev->agp || !dev->agp->acquired) | |
363 | return -EINVAL; | |
efa58395 | 364 | if (!(entry = drm_agp_lookup_entry(dev, request->handle))) |
1da177e4 LT |
365 | return -EINVAL; |
366 | if (entry->bound) | |
367 | drm_unbind_agp(entry->memory); | |
368 | ||
bd1b331f | 369 | list_del(&entry->head); |
1da177e4 LT |
370 | |
371 | drm_free_agp(entry->memory, entry->pages); | |
372 | drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); | |
373 | return 0; | |
374 | } | |
efa58395 DA |
375 | EXPORT_SYMBOL(drm_agp_free); |
376 | ||
efa58395 | 377 | |
efa58395 | 378 | |
c153f45f EA |
379 | int drm_agp_free_ioctl(struct drm_device *dev, void *data, |
380 | struct drm_file *file_priv) | |
381 | { | |
382 | struct drm_agp_buffer *request = data; | |
383 | ||
384 | return drm_agp_free(dev, request); | |
efa58395 | 385 | } |
1da177e4 LT |
386 | |
387 | /** | |
388 | * Initialize the AGP resources. | |
389 | * | |
390 | * \return pointer to a drm_agp_head structure. | |
391 | * | |
d985c108 DA |
392 | * Gets the drm_agp_t structure which is made available by the agpgart module |
393 | * via the inter_module_* functions. Creates and initializes a drm_agp_head | |
394 | * structure. | |
1da177e4 | 395 | */ |
55910517 | 396 | struct drm_agp_head *drm_agp_init(struct drm_device *dev) |
1da177e4 | 397 | { |
55910517 | 398 | struct drm_agp_head *head = NULL; |
1da177e4 LT |
399 | |
400 | if (!(head = drm_alloc(sizeof(*head), DRM_MEM_AGPLISTS))) | |
401 | return NULL; | |
402 | memset((void *)head, 0, sizeof(*head)); | |
403 | head->bridge = agp_find_bridge(dev->pdev); | |
404 | if (!head->bridge) { | |
405 | if (!(head->bridge = agp_backend_acquire(dev->pdev))) { | |
406 | drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS); | |
407 | return NULL; | |
408 | } | |
409 | agp_copy_info(head->bridge, &head->agp_info); | |
410 | agp_backend_release(head->bridge); | |
411 | } else { | |
412 | agp_copy_info(head->bridge, &head->agp_info); | |
413 | } | |
414 | if (head->agp_info.chipset == NOT_SUPPORTED) { | |
415 | drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS); | |
416 | return NULL; | |
417 | } | |
bd1b331f | 418 | INIT_LIST_HEAD(&head->memory); |
1da177e4 LT |
419 | head->cant_use_aperture = head->agp_info.cant_use_aperture; |
420 | head->page_mask = head->agp_info.page_mask; | |
8b409580 | 421 | head->base = head->agp_info.aper_base; |
1da177e4 LT |
422 | return head; |
423 | } | |
424 | ||
425 | /** Calls agp_allocate_memory() */ | |
b5e89ed5 DA |
426 | DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data * bridge, |
427 | size_t pages, u32 type) | |
1da177e4 LT |
428 | { |
429 | return agp_allocate_memory(bridge, pages, type); | |
430 | } | |
431 | ||
432 | /** Calls agp_free_memory() */ | |
b5e89ed5 | 433 | int drm_agp_free_memory(DRM_AGP_MEM * handle) |
1da177e4 LT |
434 | { |
435 | if (!handle) | |
436 | return 0; | |
437 | agp_free_memory(handle); | |
438 | return 1; | |
439 | } | |
440 | ||
441 | /** Calls agp_bind_memory() */ | |
b5e89ed5 | 442 | int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start) |
1da177e4 LT |
443 | { |
444 | if (!handle) | |
445 | return -EINVAL; | |
446 | return agp_bind_memory(handle, start); | |
447 | } | |
b5e89ed5 | 448 | |
1da177e4 | 449 | /** Calls agp_unbind_memory() */ |
b5e89ed5 | 450 | int drm_agp_unbind_memory(DRM_AGP_MEM * handle) |
1da177e4 LT |
451 | { |
452 | if (!handle) | |
453 | return -EINVAL; | |
454 | return agp_unbind_memory(handle); | |
455 | } | |
456 | ||
673a394b EA |
457 | /** |
458 | * Binds a collection of pages into AGP memory at the given offset, returning | |
459 | * the AGP memory structure containing them. | |
460 | * | |
461 | * No reference is held on the pages during this time -- it is up to the | |
462 | * caller to handle that. | |
463 | */ | |
464 | DRM_AGP_MEM * | |
465 | drm_agp_bind_pages(struct drm_device *dev, | |
466 | struct page **pages, | |
467 | unsigned long num_pages, | |
ba1eb1d8 KP |
468 | uint32_t gtt_offset, |
469 | u32 type) | |
673a394b EA |
470 | { |
471 | DRM_AGP_MEM *mem; | |
472 | int ret, i; | |
473 | ||
474 | DRM_DEBUG("\n"); | |
475 | ||
476 | mem = drm_agp_allocate_memory(dev->agp->bridge, num_pages, | |
ba1eb1d8 | 477 | type); |
673a394b EA |
478 | if (mem == NULL) { |
479 | DRM_ERROR("Failed to allocate memory for %ld pages\n", | |
480 | num_pages); | |
481 | return NULL; | |
482 | } | |
483 | ||
484 | for (i = 0; i < num_pages; i++) | |
485 | mem->memory[i] = phys_to_gart(page_to_phys(pages[i])); | |
486 | mem->page_count = num_pages; | |
487 | ||
488 | mem->is_flushed = true; | |
489 | ret = drm_agp_bind_memory(mem, gtt_offset / PAGE_SIZE); | |
490 | if (ret != 0) { | |
491 | DRM_ERROR("Failed to bind AGP memory: %d\n", ret); | |
492 | agp_free_memory(mem); | |
493 | return NULL; | |
494 | } | |
495 | ||
496 | return mem; | |
497 | } | |
498 | EXPORT_SYMBOL(drm_agp_bind_pages); | |
499 | ||
500 | void drm_agp_chipset_flush(struct drm_device *dev) | |
501 | { | |
502 | agp_flush_chipset(dev->agp->bridge); | |
503 | } | |
504 | EXPORT_SYMBOL(drm_agp_chipset_flush); | |
505 | ||
506 | #endif /* __OS_HAS_AGP */ |