33  * GEM drivers which provide a GEM based dumb buffer with a virtual address are supported.
159  * is fbdev which cannot free the buffer if userspace has open file descriptors.
182  * drm_client_buffer_delete - Delete a client buffer
183  * @buffer: DRM client buffer
185 void drm_client_buffer_delete(struct drm_client_buffer *buffer)  in drm_client_buffer_delete()  argument
190 	if (!buffer)  in drm_client_buffer_delete()
193 	gem = buffer->fb->obj[0];  in drm_client_buffer_delete()
194 	drm_gem_vunmap(gem, &buffer->map);  in drm_client_buffer_delete()
196 	ret = drm_mode_rmfb(buffer->client->dev, buffer->fb->base.id, buffer->client->file);  in drm_client_buffer_delete()
198 		drm_err(buffer->client->dev,  in drm_client_buffer_delete()
199 			"Error removing FB:%u (%d)\n", buffer->fb->base.id, ret);  in drm_client_buffer_delete()
201 	drm_gem_object_put(buffer->gem);  in drm_client_buffer_delete()
203 	kfree(buffer);  in drm_client_buffer_delete()
223 	struct drm_client_buffer *buffer;  in drm_client_buffer_create()  local
228 	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);  in drm_client_buffer_create()
229 	if (!buffer)  in drm_client_buffer_create()
232 	buffer->client = client;  in drm_client_buffer_create()
255 	buffer->gem = obj;  in drm_client_buffer_create()
256 	buffer->fb = fb;  in drm_client_buffer_create()
258 	return buffer;  in drm_client_buffer_create()
265 	kfree(buffer);  in drm_client_buffer_create()
270  * drm_client_buffer_vmap_local - Map DRM client buffer into address space
271  * @buffer: DRM client buffer
274  * This function maps a client buffer into kernel address space. If the
275  * buffer is already mapped, it returns the existing mapping's address.
277  * Client buffer mappings are not ref'counted. Each call to
289 int drm_client_buffer_vmap_local(struct drm_client_buffer *buffer,  in drm_client_buffer_vmap_local()  argument
292 	struct drm_gem_object *gem = buffer->fb->obj[0];  in drm_client_buffer_vmap_local()
293 	struct iosys_map *map = &buffer->map;  in drm_client_buffer_vmap_local()
312  * drm_client_buffer_vunmap_local - Unmap DRM client buffer
313  * @buffer: DRM client buffer
315  * This function removes a client buffer's memory mapping established
317  * required by clients that manage their buffer mappings by themselves.
319 void drm_client_buffer_vunmap_local(struct drm_client_buffer *buffer)  in drm_client_buffer_vunmap_local()  argument
321 	struct drm_gem_object *gem = buffer->fb->obj[0];  in drm_client_buffer_vunmap_local()
322 	struct iosys_map *map = &buffer->map;  in drm_client_buffer_vunmap_local()
330  * drm_client_buffer_vmap - Map DRM client buffer into address space
331  * @buffer: DRM client buffer
334  * This function maps a client buffer into kernel address space. If the
335  * buffer is already mapped, it returns the existing mapping's address.
337  * Client buffer mappings are not ref'counted. Each call to
339  * drm_client_buffer_vunmap(); or the client buffer should be mapped
349 int drm_client_buffer_vmap(struct drm_client_buffer *buffer,  in drm_client_buffer_vmap()  argument
352 	struct drm_gem_object *gem = buffer->fb->obj[0];  in drm_client_buffer_vmap()
355 	ret = drm_gem_vmap(gem, &buffer->map);  in drm_client_buffer_vmap()
358 	*map_copy = buffer->map;  in drm_client_buffer_vmap()
365  * drm_client_buffer_vunmap - Unmap DRM client buffer
366  * @buffer: DRM client buffer
368  * This function removes a client buffer's memory mapping. Calling this
369  * function is only required by clients that manage their buffer mappings
372 void drm_client_buffer_vunmap(struct drm_client_buffer *buffer)  in drm_client_buffer_vunmap()  argument
374 	struct drm_gem_object *gem = buffer->fb->obj[0];  in drm_client_buffer_vunmap()
376 	drm_gem_vunmap(gem, &buffer->map);  in drm_client_buffer_vunmap()
381  * drm_client_buffer_create_dumb - Create a client buffer backed by a dumb buffer
385  * @format: Buffer format
388  * &drm_framebuffer backed by a dumb buffer.
389  * Call drm_client_buffer_delete() to free the buffer.
392  * Pointer to a client buffer or an error pointer on failure.
400 	struct drm_client_buffer *buffer;  in drm_client_buffer_create_dumb()  local
410 	buffer = drm_client_buffer_create(client, width, height, format,  in drm_client_buffer_create_dumb()
412 	if (IS_ERR(buffer)) {  in drm_client_buffer_create_dumb()
413 		ret = PTR_ERR(buffer);  in drm_client_buffer_create_dumb()
420 	 * object as DMA-buf. The framebuffer and our buffer structure are still  in drm_client_buffer_create_dumb()
425 	return buffer;  in drm_client_buffer_create_dumb()
434  * drm_client_buffer_flush - Manually flush client buffer
435  * @buffer: DRM client buffer
438  * This calls &drm_framebuffer_funcs->dirty (if present) to flush buffer changes
444 int drm_client_buffer_flush(struct drm_client_buffer *buffer, struct drm_rect *rect)  in drm_client_buffer_flush()  argument
446 	if (!buffer || !buffer->fb || !buffer->fb->funcs->dirty)  in drm_client_buffer_flush()
457 		return buffer->fb->funcs->dirty(buffer->fb, buffer->client->file,  in drm_client_buffer_flush()
461 	return buffer->fb->funcs->dirty(buffer->fb, buffer->client->file,  in drm_client_buffer_flush()