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3b96a0b1 DV |
1 | /* |
2 | * Internal Header for the Direct Rendering Manager | |
3 | * | |
4 | * Copyright 2016 Intel Corporation | |
5 | * | |
6 | * Author: Daniel Vetter <daniel.vetter@ffwll.ch> | |
7 | * | |
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: | |
14 | * | |
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 | |
17 | * Software. | |
18 | * | |
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. | |
26 | */ | |
27 | ||
28 | #ifndef _DRM_AUTH_H_ | |
29 | #define _DRM_AUTH_H_ | |
30 | ||
31 | /** | |
32 | * struct drm_master - drm master structure | |
33 | * | |
34 | * @refcount: Refcount for this master object. | |
35 | * @dev: Link back to the DRM device | |
36 | * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. | |
37 | * @unique_len: Length of unique field. Protected by drm_global_mutex. | |
38 | * @magic_map: Map of used authentication tokens. Protected by struct_mutex. | |
39 | * @lock: DRI lock information. | |
40 | * @driver_priv: Pointer to driver-private information. | |
41 | * | |
42 | * Note that master structures are only relevant for the legacy/primary device | |
43 | * nodes, hence there can only be one per device, not one per drm_minor. | |
44 | */ | |
45 | struct drm_master { | |
46 | struct kref refcount; | |
47 | struct drm_device *dev; | |
48 | char *unique; | |
49 | int unique_len; | |
50 | struct idr magic_map; | |
51 | struct drm_lock_data lock; | |
52 | void *driver_priv; | |
53 | }; | |
54 | ||
55 | struct drm_master *drm_master_get(struct drm_master *master); | |
56 | void drm_master_put(struct drm_master **master); | |
57 | bool drm_is_current_master(struct drm_file *fpriv); | |
58 | ||
59 | #endif |