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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 | ||
d891b9c7 DV |
31 | /* |
32 | * Legacy DRI1 locking data structure. Only here instead of in drm_legacy.h for | |
33 | * include ordering reasons. | |
34 | * | |
35 | * DO NOT USE. | |
36 | */ | |
37 | struct drm_lock_data { | |
38 | struct drm_hw_lock *hw_lock; | |
39 | struct drm_file *file_priv; | |
40 | wait_queue_head_t lock_queue; | |
41 | unsigned long lock_time; | |
42 | spinlock_t spinlock; | |
43 | uint32_t kernel_waiters; | |
44 | uint32_t user_waiters; | |
45 | int idle_has_lock; | |
46 | }; | |
47 | ||
3b96a0b1 DV |
48 | /** |
49 | * struct drm_master - drm master structure | |
50 | * | |
51 | * @refcount: Refcount for this master object. | |
52 | * @dev: Link back to the DRM device | |
5acc614a | 53 | * @lock: DRI1 lock information. |
3b96a0b1 | 54 | * @driver_priv: Pointer to driver-private information. |
2ed077e4 KP |
55 | * @lessor: Lease holder |
56 | * @lessee_id: id for lessees. Owners always have id 0 | |
57 | * @lessee_list: other lessees of the same master | |
58 | * @lessees: drm_masters leasing from this one | |
59 | * @leases: Objects leased to this drm_master. | |
60 | * @lessee_idr: All lessees under this owner (only used where lessor == NULL) | |
3b96a0b1 DV |
61 | * |
62 | * Note that master structures are only relevant for the legacy/primary device | |
63 | * nodes, hence there can only be one per device, not one per drm_minor. | |
64 | */ | |
65 | struct drm_master { | |
66 | struct kref refcount; | |
67 | struct drm_device *dev; | |
5acc614a | 68 | /** |
ef40cbf9 DV |
69 | * @unique: Unique identifier: e.g. busid. Protected by |
70 | * &drm_device.master_mutex. | |
5acc614a | 71 | */ |
3b96a0b1 | 72 | char *unique; |
5acc614a | 73 | /** |
ef40cbf9 DV |
74 | * @unique_len: Length of unique field. Protected by |
75 | * &drm_device.master_mutex. | |
5acc614a | 76 | */ |
3b96a0b1 | 77 | int unique_len; |
5acc614a | 78 | /** |
ef40cbf9 DV |
79 | * @magic_map: Map of used authentication tokens. Protected by |
80 | * &drm_device.master_mutex. | |
5acc614a | 81 | */ |
3b96a0b1 DV |
82 | struct idr magic_map; |
83 | struct drm_lock_data lock; | |
84 | void *driver_priv; | |
2ed077e4 KP |
85 | |
86 | /* Tree of display resource leases, each of which is a drm_master struct | |
87 | * All of these get activated simultaneously, so drm_device master points | |
88 | * at the top of the tree (for which lessor is NULL). Protected by | |
89 | * &drm_device.mode_config.idr_mutex. | |
90 | */ | |
91 | ||
92 | struct drm_master *lessor; | |
93 | int lessee_id; | |
94 | struct list_head lessee_list; | |
95 | struct list_head lessees; | |
96 | struct idr leases; | |
97 | struct idr lessee_idr; | |
3b96a0b1 DV |
98 | }; |
99 | ||
100 | struct drm_master *drm_master_get(struct drm_master *master); | |
101 | void drm_master_put(struct drm_master **master); | |
102 | bool drm_is_current_master(struct drm_file *fpriv); | |
103 | ||
2ed077e4 KP |
104 | struct drm_master *drm_master_create(struct drm_device *dev); |
105 | ||
3b96a0b1 | 106 | #endif |