35 #include <dev/drm2/drmP.h>
51 int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info)  in drm_agp_info()  argument
55 	if (!dev->agp || !dev->agp->acquired)  in drm_agp_info()
56 		return -EINVAL;  in drm_agp_info()
58 	kern = &dev->agp->agp_info;  in drm_agp_info()
59 	agp_get_info(dev->agp->bridge, kern);  in drm_agp_info()
60 	info->agp_version_major = 1;  in drm_agp_info()
61 	info->agp_version_minor = 0;  in drm_agp_info()
62 	info->mode              = kern->ai_mode;  in drm_agp_info()
63 	info->aperture_base     = kern->ai_aperture_base;  in drm_agp_info()
64 	info->aperture_size     = kern->ai_aperture_size;  in drm_agp_info()
65 	info->memory_allowed    = kern->ai_memory_allowed;  in drm_agp_info()
66 	info->memory_used       = kern->ai_memory_used;  in drm_agp_info()
67 	info->id_vendor         = kern->ai_devid & 0xffff;  in drm_agp_info()
68 	info->id_device         = kern->ai_devid >> 16;  in drm_agp_info()
75 int drm_agp_info_ioctl(struct drm_device *dev, void *data,  in drm_agp_info_ioctl()  argument
81 	err = drm_agp_info(dev, info);  in drm_agp_info_ioctl()
91  * \param dev DRM device that is to acquire AGP.
97 int drm_agp_acquire(struct drm_device * dev)  in drm_agp_acquire()  argument
101 	if (!dev->agp)  in drm_agp_acquire()
102 		return -ENODEV;  in drm_agp_acquire()
103 	if (dev->agp->acquired)  in drm_agp_acquire()
104 		return -EBUSY;  in drm_agp_acquire()
105 	retcode = agp_acquire(dev->agp->bridge);  in drm_agp_acquire()
107 		return -retcode;  in drm_agp_acquire()
108 	dev->agp->acquired = 1;  in drm_agp_acquire()
126 int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,  in drm_agp_acquire_ioctl()  argument
129 	return drm_agp_acquire((struct drm_device *) file_priv->minor->dev);  in drm_agp_acquire_ioctl()
135  * \param dev DRM device that is to release AGP.
140 int drm_agp_release(struct drm_device * dev)  in drm_agp_release()  argument
142 	if (!dev->agp || !dev->agp->acquired)  in drm_agp_release()
143 		return -EINVAL;  in drm_agp_release()
144 	agp_release(dev->agp->bridge);  in drm_agp_release()
145 	dev->agp->acquired = 0;  in drm_agp_release()
150 int drm_agp_release_ioctl(struct drm_device *dev, void *data,  in drm_agp_release_ioctl()  argument
153 	return drm_agp_release(dev);  in drm_agp_release_ioctl()
159  * \param dev DRM device that has previously acquired AGP.
166 int drm_agp_enable(struct drm_device * dev, struct drm_agp_mode mode)  in drm_agp_enable()  argument
168 	if (!dev->agp || !dev->agp->acquired)  in drm_agp_enable()
169 		return -EINVAL;  in drm_agp_enable()
171 	dev->agp->mode = mode.mode;  in drm_agp_enable()
172 	agp_enable(dev->agp->bridge, mode.mode);  in drm_agp_enable()
173 	dev->agp->enabled = 1;  in drm_agp_enable()
179 int drm_agp_enable_ioctl(struct drm_device *dev, void *data,  in drm_agp_enable_ioctl()  argument
184 	return drm_agp_enable(dev, *mode);  in drm_agp_enable_ioctl()
199 int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request)  in drm_agp_alloc()  argument
207 	if (!dev->agp || !dev->agp->acquired)  in drm_agp_alloc()
208 		return -EINVAL;  in drm_agp_alloc()
210 		return -ENOMEM;  in drm_agp_alloc()
214 	pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE;  in drm_agp_alloc()
215 	type = (u32) request->type;  in drm_agp_alloc()
216 	if (!(memory = agp_alloc_memory(dev->agp->bridge, type, pages << PAGE_SHIFT))) {  in drm_agp_alloc()
218 		return -ENOMEM;  in drm_agp_alloc()
221 	entry->handle = (unsigned long)memory;  in drm_agp_alloc()
222 	entry->memory = memory;  in drm_agp_alloc()
223 	entry->bound = 0;  in drm_agp_alloc()
224 	entry->pages = pages;  in drm_agp_alloc()
225 	list_add(&entry->head, &dev->agp->memory);  in drm_agp_alloc()
227 	agp_memory_info(dev->agp->bridge, entry->memory, &info);  in drm_agp_alloc()
229 	request->handle = entry->handle;  in drm_agp_alloc()
230 	request->physical = info.ami_physical;  in drm_agp_alloc()
237 int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,  in drm_agp_alloc_ioctl()  argument
242 	return drm_agp_alloc(dev, request);  in drm_agp_alloc_ioctl()
246  * Search for the AGP memory entry associated with a handle.
248  * \param dev DRM device structure.
249  * \param handle AGP memory handle.
250  * \return pointer to the drm_agp_mem structure associated with \p handle.
252  * Walks through drm_agp_head::memory until finding a matching handle.
254 static struct drm_agp_mem *drm_agp_lookup_entry(struct drm_device * dev,  in drm_agp_lookup_entry()  argument
255 					   unsigned long handle)  in drm_agp_lookup_entry()  argument
259 	list_for_each_entry(entry, &dev->agp->memory, head) {  in drm_agp_lookup_entry()
260 		if (entry->handle == handle)  in drm_agp_lookup_entry()
275  * Verifies the AGP device is present and acquired, looks-up the AGP memory
278 int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request)  in drm_agp_unbind()  argument
283 	if (!dev->agp || !dev->agp->acquired)  in drm_agp_unbind()
284 		return -EINVAL;  in drm_agp_unbind()
285 	if (!(entry = drm_agp_lookup_entry(dev, request->handle)))  in drm_agp_unbind()
286 		return -EINVAL;  in drm_agp_unbind()
287 	if (!entry->bound)  in drm_agp_unbind()
288 		return -EINVAL;  in drm_agp_unbind()
289 	ret = drm_unbind_agp(entry->memory);  in drm_agp_unbind()
291 		entry->bound = 0;  in drm_agp_unbind()
297 int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,  in drm_agp_unbind_ioctl()  argument
302 	return drm_agp_unbind(dev, request);  in drm_agp_unbind_ioctl()
315  * is currently bound into the GATT. Looks-up the AGP memory entry and passes
318 int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request)  in drm_agp_bind()  argument
324 	if (!dev->agp || !dev->agp->acquired)  in drm_agp_bind()
325 		return -EINVAL;  in drm_agp_bind()
326 	if (!(entry = drm_agp_lookup_entry(dev, request->handle)))  in drm_agp_bind()
327 		return -EINVAL;  in drm_agp_bind()
328 	if (entry->bound)  in drm_agp_bind()
329 		return -EINVAL;  in drm_agp_bind()
330 	page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE;  in drm_agp_bind()
331 	if ((retcode = drm_bind_agp(entry->memory, page)))  in drm_agp_bind()
333 	entry->bound = dev->agp->base + (page << PAGE_SHIFT);  in drm_agp_bind()
334 	DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n",  in drm_agp_bind()
335 		  dev->agp->base, entry->bound);  in drm_agp_bind()
341 int drm_agp_bind_ioctl(struct drm_device *dev, void *data,  in drm_agp_bind_ioctl()  argument
346 	return drm_agp_bind(dev, request);  in drm_agp_bind_ioctl()
363 int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request)  in drm_agp_free()  argument
367 	if (!dev->agp || !dev->agp->acquired)  in drm_agp_free()
368 		return -EINVAL;  in drm_agp_free()
369 	if (!(entry = drm_agp_lookup_entry(dev, request->handle)))  in drm_agp_free()
370 		return -EINVAL;  in drm_agp_free()
371 	if (entry->bound)  in drm_agp_free()
372 		drm_unbind_agp(entry->memory);  in drm_agp_free()
374 	list_del(&entry->head);  in drm_agp_free()
376 	drm_free_agp(entry->memory, entry->pages);  in drm_agp_free()
384 int drm_agp_free_ioctl(struct drm_device *dev, void *data,  in drm_agp_free_ioctl()  argument
389 	return drm_agp_free(dev, request);  in drm_agp_free_ioctl()
401 struct drm_agp_head *drm_agp_init(struct drm_device *dev)  in drm_agp_init()  argument
408 	head->bridge = agp_find_device();  in drm_agp_init()
409 	if (!head->bridge) {  in drm_agp_init()
413 		agp_get_info(head->bridge, &head->agp_info);  in drm_agp_init()
415 	INIT_LIST_HEAD(&head->memory);  in drm_agp_init()
416 	head->cant_use_aperture = 0;  in drm_agp_init()
417 	head->base = head->agp_info.ai_aperture_base;  in drm_agp_init()
426  * No reference is held on the pages during this time -- it is up to the
427  * caller to handle that.
430 drm_agp_bind_pages(struct drm_device *dev,  in drm_agp_bind_pages()  argument
441 	mem = agp_allocate_memory(dev->agp->bridge, num_pages,  in drm_agp_bind_pages()
450 		mem->pages[i] = pages[i];  in drm_agp_bind_pages()
451 	mem->page_count = num_pages;  in drm_agp_bind_pages()
453 	mem->is_flushed = true;  in drm_agp_bind_pages()