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authorDave Airlie <airlied@redhat.com>2008-05-28 20:09:59 -0400
committerDave Airlie <airlied@redhat.com>2008-07-13 20:45:01 -0400
commitc0e09200dc0813972442e550a5905a132768e56c (patch)
treed38e635a30ff8b0a2b98b9d7f97cab1501f8209e /drivers/char/drm/drm_agpsupport.c
parentbce7f793daec3e65ec5c5705d2457b81fe7b5725 (diff)
drm: reorganise drm tree to be more future proof.
With the coming of kernel based modesetting and the memory manager stuff, the everything in one directory approach was getting very ugly and starting to be unmanageable. This restructures the drm along the lines of other kernel components. It creates a drivers/gpu/drm directory and moves the hw drivers into subdirectores. It moves the includes into an include/drm, and sets up the unifdef for the userspace headers we should be exporting. Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/char/drm/drm_agpsupport.c')
-rw-r--r--drivers/char/drm/drm_agpsupport.c455
1 files changed, 0 insertions, 455 deletions
diff --git a/drivers/char/drm/drm_agpsupport.c b/drivers/char/drm/drm_agpsupport.c
deleted file mode 100644
index aefa5ac4c0b1..000000000000
--- a/drivers/char/drm/drm_agpsupport.c
+++ /dev/null
@@ -1,455 +0,0 @@
1/**
2 * \file drm_agpsupport.c
3 * DRM support for AGP/GART backend
4 *
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/**
40 * Get AGP information.
41 *
42 * \param inode device inode.
43 * \param file_priv DRM file private.
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 */
51int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info)
52{
53 DRM_AGP_KERN *kern;
54
55 if (!dev->agp || !dev->agp->acquired)
56 return -EINVAL;
57
58 kern = &dev->agp->agp_info;
59 info->agp_version_major = kern->version.major;
60 info->agp_version_minor = kern->version.minor;
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;
68
69 return 0;
70}
71
72EXPORT_SYMBOL(drm_agp_info);
73
74int drm_agp_info_ioctl(struct drm_device *dev, void *data,
75 struct drm_file *file_priv)
76{
77 struct drm_agp_info *info = data;
78 int err;
79
80 err = drm_agp_info(dev, info);
81 if (err)
82 return err;
83
84 return 0;
85}
86
87/**
88 * Acquire the AGP device.
89 *
90 * \param dev DRM device that is to acquire AGP.
91 * \return zero on success or a negative number on failure.
92 *
93 * Verifies the AGP device hasn't been acquired before and calls
94 * \c agp_backend_acquire.
95 */
96int drm_agp_acquire(struct drm_device * dev)
97{
98 if (!dev->agp)
99 return -ENODEV;
100 if (dev->agp->acquired)
101 return -EBUSY;
102 if (!(dev->agp->bridge = agp_backend_acquire(dev->pdev)))
103 return -ENODEV;
104 dev->agp->acquired = 1;
105 return 0;
106}
107
108EXPORT_SYMBOL(drm_agp_acquire);
109
110/**
111 * Acquire the AGP device (ioctl).
112 *
113 * \param inode device inode.
114 * \param file_priv DRM file private.
115 * \param cmd command.
116 * \param arg user argument.
117 * \return zero on success or a negative number on failure.
118 *
119 * Verifies the AGP device hasn't been acquired before and calls
120 * \c agp_backend_acquire.
121 */
122int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
123 struct drm_file *file_priv)
124{
125 return drm_agp_acquire((struct drm_device *) file_priv->minor->dev);
126}
127
128/**
129 * Release the AGP device.
130 *
131 * \param dev DRM device that is to release AGP.
132 * \return zero on success or a negative number on failure.
133 *
134 * Verifies the AGP device has been acquired and calls \c agp_backend_release.
135 */
136int drm_agp_release(struct drm_device * dev)
137{
138 if (!dev->agp || !dev->agp->acquired)
139 return -EINVAL;
140 agp_backend_release(dev->agp->bridge);
141 dev->agp->acquired = 0;
142 return 0;
143}
144EXPORT_SYMBOL(drm_agp_release);
145
146int drm_agp_release_ioctl(struct drm_device *dev, void *data,
147 struct drm_file *file_priv)
148{
149 return drm_agp_release(dev);
150}
151
152/**
153 * Enable the AGP bus.
154 *
155 * \param dev DRM device that has previously acquired AGP.
156 * \param mode Requested AGP mode.
157 * \return zero on success or a negative number on failure.
158 *
159 * Verifies the AGP device has been acquired but not enabled, and calls
160 * \c agp_enable.
161 */
162int drm_agp_enable(struct drm_device * dev, struct drm_agp_mode mode)
163{
164 if (!dev->agp || !dev->agp->acquired)
165 return -EINVAL;
166
167 dev->agp->mode = mode.mode;
168 agp_enable(dev->agp->bridge, mode.mode);
169 dev->agp->enabled = 1;
170 return 0;
171}
172
173EXPORT_SYMBOL(drm_agp_enable);
174
175int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
176 struct drm_file *file_priv)
177{
178 struct drm_agp_mode *mode = data;
179
180 return drm_agp_enable(dev, *mode);
181}
182
183/**
184 * Allocate AGP memory.
185 *
186 * \param inode device inode.
187 * \param file_priv file private pointer.
188 * \param cmd command.
189 * \param arg pointer to a drm_agp_buffer structure.
190 * \return zero on success or a negative number on failure.
191 *
192 * Verifies the AGP device is present and has been acquired, allocates the
193 * memory via alloc_agp() and creates a drm_agp_mem entry for it.
194 */
195int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request)
196{
197 struct drm_agp_mem *entry;
198 DRM_AGP_MEM *memory;
199 unsigned long pages;
200 u32 type;
201
202 if (!dev->agp || !dev->agp->acquired)
203 return -EINVAL;
204 if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS)))
205 return -ENOMEM;
206
207 memset(entry, 0, sizeof(*entry));
208
209 pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE;
210 type = (u32) request->type;
211 if (!(memory = drm_alloc_agp(dev, pages, type))) {
212 drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
213 return -ENOMEM;
214 }
215
216 entry->handle = (unsigned long)memory->key + 1;
217 entry->memory = memory;
218 entry->bound = 0;
219 entry->pages = pages;
220 list_add(&entry->head, &dev->agp->memory);
221
222 request->handle = entry->handle;
223 request->physical = memory->physical;
224
225 return 0;
226}
227EXPORT_SYMBOL(drm_agp_alloc);
228
229
230int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
231 struct drm_file *file_priv)
232{
233 struct drm_agp_buffer *request = data;
234
235 return drm_agp_alloc(dev, request);
236}
237
238/**
239 * Search for the AGP memory entry associated with a handle.
240 *
241 * \param dev DRM device structure.
242 * \param handle AGP memory handle.
243 * \return pointer to the drm_agp_mem structure associated with \p handle.
244 *
245 * Walks through drm_agp_head::memory until finding a matching handle.
246 */
247static struct drm_agp_mem *drm_agp_lookup_entry(struct drm_device * dev,
248 unsigned long handle)
249{
250 struct drm_agp_mem *entry;
251
252 list_for_each_entry(entry, &dev->agp->memory, head) {
253 if (entry->handle == handle)
254 return entry;
255 }
256 return NULL;
257}
258
259/**
260 * Unbind AGP memory from the GATT (ioctl).
261 *
262 * \param inode device inode.
263 * \param file_priv DRM file private.
264 * \param cmd command.
265 * \param arg pointer to a drm_agp_binding structure.
266 * \return zero on success or a negative number on failure.
267 *
268 * Verifies the AGP device is present and acquired, looks-up the AGP memory
269 * entry and passes it to the unbind_agp() function.
270 */
271int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request)
272{
273 struct drm_agp_mem *entry;
274 int ret;
275
276 if (!dev->agp || !dev->agp->acquired)
277 return -EINVAL;
278 if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
279 return -EINVAL;
280 if (!entry->bound)
281 return -EINVAL;
282 ret = drm_unbind_agp(entry->memory);
283 if (ret == 0)
284 entry->bound = 0;
285 return ret;
286}
287EXPORT_SYMBOL(drm_agp_unbind);
288
289
290int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
291 struct drm_file *file_priv)
292{
293 struct drm_agp_binding *request = data;
294
295 return drm_agp_unbind(dev, request);
296}
297
298/**
299 * Bind AGP memory into the GATT (ioctl)
300 *
301 * \param inode device inode.
302 * \param file_priv DRM file private.
303 * \param cmd command.
304 * \param arg pointer to a drm_agp_binding structure.
305 * \return zero on success or a negative number on failure.
306 *
307 * Verifies the AGP device is present and has been acquired and that no memory
308 * is currently bound into the GATT. Looks-up the AGP memory entry and passes
309 * it to bind_agp() function.
310 */
311int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request)
312{
313 struct drm_agp_mem *entry;
314 int retcode;
315 int page;
316
317 if (!dev->agp || !dev->agp->acquired)
318 return -EINVAL;
319 if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
320 return -EINVAL;
321 if (entry->bound)
322 return -EINVAL;
323 page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE;
324 if ((retcode = drm_bind_agp(entry->memory, page)))
325 return retcode;
326 entry->bound = dev->agp->base + (page << PAGE_SHIFT);
327 DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n",
328 dev->agp->base, entry->bound);
329 return 0;
330}
331EXPORT_SYMBOL(drm_agp_bind);
332
333
334int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
335 struct drm_file *file_priv)
336{
337 struct drm_agp_binding *request = data;
338
339 return drm_agp_bind(dev, request);
340}
341
342/**
343 * Free AGP memory (ioctl).
344 *
345 * \param inode device inode.
346 * \param file_priv DRM file private.
347 * \param cmd command.
348 * \param arg pointer to a drm_agp_buffer structure.
349 * \return zero on success or a negative number on failure.
350 *
351 * Verifies the AGP device is present and has been acquired and looks up the
352 * AGP memory entry. If the memory it's currently bound, unbind it via
353 * unbind_agp(). Frees it via free_agp() as well as the entry itself
354 * and unlinks from the doubly linked list it's inserted in.
355 */
356int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request)
357{
358 struct drm_agp_mem *entry;
359
360 if (!dev->agp || !dev->agp->acquired)
361 return -EINVAL;
362 if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
363 return -EINVAL;
364 if (entry->bound)
365 drm_unbind_agp(entry->memory);
366
367 list_del(&entry->head);
368
369 drm_free_agp(entry->memory, entry->pages);
370 drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
371 return 0;
372}
373EXPORT_SYMBOL(drm_agp_free);
374
375
376
377int drm_agp_free_ioctl(struct drm_device *dev, void *data,
378 struct drm_file *file_priv)
379{
380 struct drm_agp_buffer *request = data;
381
382 return drm_agp_free(dev, request);
383}
384
385/**
386 * Initialize the AGP resources.
387 *
388 * \return pointer to a drm_agp_head structure.
389 *
390 * Gets the drm_agp_t structure which is made available by the agpgart module
391 * via the inter_module_* functions. Creates and initializes a drm_agp_head
392 * structure.
393 */
394struct drm_agp_head *drm_agp_init(struct drm_device *dev)
395{
396 struct drm_agp_head *head = NULL;
397
398 if (!(head = drm_alloc(sizeof(*head), DRM_MEM_AGPLISTS)))
399 return NULL;
400 memset((void *)head, 0, sizeof(*head));
401 head->bridge = agp_find_bridge(dev->pdev);
402 if (!head->bridge) {
403 if (!(head->bridge = agp_backend_acquire(dev->pdev))) {
404 drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS);
405 return NULL;
406 }
407 agp_copy_info(head->bridge, &head->agp_info);
408 agp_backend_release(head->bridge);
409 } else {
410 agp_copy_info(head->bridge, &head->agp_info);
411 }
412 if (head->agp_info.chipset == NOT_SUPPORTED) {
413 drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS);
414 return NULL;
415 }
416 INIT_LIST_HEAD(&head->memory);
417 head->cant_use_aperture = head->agp_info.cant_use_aperture;
418 head->page_mask = head->agp_info.page_mask;
419 head->base = head->agp_info.aper_base;
420 return head;
421}
422
423/** Calls agp_allocate_memory() */
424DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data * bridge,
425 size_t pages, u32 type)
426{
427 return agp_allocate_memory(bridge, pages, type);
428}
429
430/** Calls agp_free_memory() */
431int drm_agp_free_memory(DRM_AGP_MEM * handle)
432{
433 if (!handle)
434 return 0;
435 agp_free_memory(handle);
436 return 1;
437}
438
439/** Calls agp_bind_memory() */
440int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start)
441{
442 if (!handle)
443 return -EINVAL;
444 return agp_bind_memory(handle, start);
445}
446
447/** Calls agp_unbind_memory() */
448int drm_agp_unbind_memory(DRM_AGP_MEM * handle)
449{
450 if (!handle)
451 return -EINVAL;
452 return agp_unbind_memory(handle);
453}
454
455#endif /* __OS_HAS_AGP */
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