| Daniel Vetter | 3b96a0b | 2016-06-21 10:54:22 +0200 | [diff] [blame] | 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 |