31  * GEM drivers which provide a GEM based dumb buffer with a virtual address are supported.
157  * is fbdev which cannot free the buffer if userspace has open file descriptors.
255 static void drm_client_buffer_delete(struct drm_client_buffer *buffer)  in drm_client_buffer_delete()  argument
257 	if (buffer->gem) {  in drm_client_buffer_delete()
258 		drm_gem_vunmap_unlocked(buffer->gem, &buffer->map);  in drm_client_buffer_delete()
259 		drm_gem_object_put(buffer->gem);  in drm_client_buffer_delete()
262 	kfree(buffer);  in drm_client_buffer_delete()
272 	struct drm_client_buffer *buffer;  in drm_client_buffer_create()  local
276 	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);  in drm_client_buffer_create()
277 	if (!buffer)  in drm_client_buffer_create()
280 	buffer->client = client;  in drm_client_buffer_create()
295 	buffer->pitch = dumb_args.pitch;  in drm_client_buffer_create()
296 	buffer->gem = obj;  in drm_client_buffer_create()
299 	return buffer;  in drm_client_buffer_create()
302 	drm_client_buffer_delete(buffer);  in drm_client_buffer_create()
308  * drm_client_buffer_vmap - Map DRM client buffer into address space
309  * @buffer: DRM client buffer
312  * This function maps a client buffer into kernel address space. If the
313  * buffer is already mapped, it returns the existing mapping's address.
315  * Client buffer mappings are not ref'counted. Each call to
317  * drm_client_buffer_vunmap(); or the client buffer should be mapped
328 drm_client_buffer_vmap(struct drm_client_buffer *buffer,  in drm_client_buffer_vmap()  argument
331 	struct iosys_map *map = &buffer->map;  in drm_client_buffer_vmap()
342 	ret = drm_gem_vmap_unlocked(buffer->gem, map);  in drm_client_buffer_vmap()
353  * drm_client_buffer_vunmap - Unmap DRM client buffer
354  * @buffer: DRM client buffer
356  * This function removes a client buffer's memory mapping. Calling this
357  * function is only required by clients that manage their buffer mappings
360 void drm_client_buffer_vunmap(struct drm_client_buffer *buffer)  in drm_client_buffer_vunmap()  argument
362 	struct iosys_map *map = &buffer->map;  in drm_client_buffer_vunmap()
364 	drm_gem_vunmap_unlocked(buffer->gem, map);  in drm_client_buffer_vunmap()
368 static void drm_client_buffer_rmfb(struct drm_client_buffer *buffer)  in drm_client_buffer_rmfb()  argument
372 	if (!buffer->fb)  in drm_client_buffer_rmfb()
375 	ret = drm_mode_rmfb(buffer->client->dev, buffer->fb->base.id, buffer->client->file);  in drm_client_buffer_rmfb()
377 		drm_err(buffer->client->dev,  in drm_client_buffer_rmfb()
378 			"Error removing FB:%u (%d)\n", buffer->fb->base.id, ret);  in drm_client_buffer_rmfb()
380 	buffer->fb = NULL;  in drm_client_buffer_rmfb()
383 static int drm_client_buffer_addfb(struct drm_client_buffer *buffer,  in drm_client_buffer_addfb()  argument
387 	struct drm_client_dev *client = buffer->client;  in drm_client_buffer_addfb()
395 	fb_req.pitches[0] = buffer->pitch;  in drm_client_buffer_addfb()
401 	buffer->fb = drm_framebuffer_lookup(client->dev, buffer->client->file, fb_req.fb_id);  in drm_client_buffer_addfb()
402 	if (WARN_ON(!buffer->fb))  in drm_client_buffer_addfb()
406 	drm_framebuffer_put(buffer->fb);  in drm_client_buffer_addfb()
408 	strscpy(buffer->fb->comm, client->name, TASK_COMM_LEN);  in drm_client_buffer_addfb()
418  * @format: Buffer format
421  * &drm_framebuffer backed by a dumb buffer.
422  * Call drm_client_framebuffer_delete() to free the buffer.
425  * Pointer to a client buffer or an error pointer on failure.
430 	struct drm_client_buffer *buffer;  in drm_client_framebuffer_create()  local
434 	buffer = drm_client_buffer_create(client, width, height, format,  in drm_client_framebuffer_create()
436 	if (IS_ERR(buffer))  in drm_client_framebuffer_create()
437 		return buffer;  in drm_client_framebuffer_create()
439 	ret = drm_client_buffer_addfb(buffer, width, height, format, handle);  in drm_client_framebuffer_create()
444 	 * object as DMA-buf. The framebuffer and our buffer structure are still  in drm_client_framebuffer_create()
450 		drm_client_buffer_delete(buffer);  in drm_client_framebuffer_create()
454 	return buffer;  in drm_client_framebuffer_create()
460  * @buffer: DRM client buffer (can be NULL)
462 void drm_client_framebuffer_delete(struct drm_client_buffer *buffer)  in drm_client_framebuffer_delete()  argument
464 	if (!buffer)  in drm_client_framebuffer_delete()
467 	drm_client_buffer_rmfb(buffer);  in drm_client_framebuffer_delete()
468 	drm_client_buffer_delete(buffer);  in drm_client_framebuffer_delete()
474  * @buffer: DRM client buffer (can be NULL)
477  * This calls &drm_framebuffer_funcs->dirty (if present) to flush buffer changes
483 int drm_client_framebuffer_flush(struct drm_client_buffer *buffer, struct drm_rect *rect)  in drm_client_framebuffer_flush()  argument
485 	if (!buffer || !buffer->fb || !buffer->fb->funcs->dirty)  in drm_client_framebuffer_flush()
496 		return buffer->fb->funcs->dirty(buffer->fb, buffer->client->file,  in drm_client_framebuffer_flush()
500 	return buffer->fb->funcs->dirty(buffer->fb, buffer->client->file,  in drm_client_framebuffer_flush()