2 * Internal Header for the Direct Rendering Manager
4 * Copyright 2016 Intel Corporation
6 * Author: Daniel Vetter <daniel.vetter@ffwll.ch>
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32 * Legacy DRI1 locking data structure. Only here instead of in drm_legacy.h for
33 * include ordering reasons.
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;
43 uint32_t kernel_waiters;
44 uint32_t user_waiters;
49 * struct drm_master - drm master structure
51 * @refcount: Refcount for this master object.
52 * @dev: Link back to the DRM device
53 * @lock: DRI1 lock information.
54 * @driver_priv: Pointer to driver-private information.
56 * Note that master structures are only relevant for the legacy/primary device
57 * nodes, hence there can only be one per device, not one per drm_minor.
61 struct drm_device *dev;
63 * @unique: Unique identifier: e.g. busid. Protected by
64 * &drm_device.master_mutex.
68 * @unique_len: Length of unique field. Protected by
69 * &drm_device.master_mutex.
73 * @magic_map: Map of used authentication tokens. Protected by
74 * &drm_device.master_mutex.
77 struct drm_lock_data lock;
81 struct drm_master *drm_master_get(struct drm_master *master);
82 void drm_master_put(struct drm_master **master);
83 bool drm_is_current_master(struct drm_file *fpriv);