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