2 * Internal Header for the Direct Rendering Manager
4 * Copyright 2016 Intel Corporation
6 * Author: Daniel Vetter <daniel.vetter@ffwll.ch>
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
32 * struct drm_master - drm master structure
34 * @refcount: Refcount for this master object.
35 * @dev: Link back to the DRM device
36 * @lock: DRI1 lock information.
37 * @driver_priv: Pointer to driver-private information.
39 * Note that master structures are only relevant for the legacy/primary device
40 * nodes, hence there can only be one per device, not one per drm_minor.
44 struct drm_device *dev;
46 * @unique: Unique identifier: e.g. busid. Protected by
47 * &drm_device.master_mutex.
51 * @unique_len: Length of unique field. Protected by
52 * &drm_device.master_mutex.
56 * @magic_map: Map of used authentication tokens. Protected by
57 * &drm_device.master_mutex.
60 struct drm_lock_data lock;
64 struct drm_master *drm_master_get(struct drm_master *master);
65 void drm_master_put(struct drm_master **master);
66 bool drm_is_current_master(struct drm_file *fpriv);