#ifndef _DRM_AUTH_H_#define _DRM_AUTH_H_ /* * Internal Header for the Direct Rendering Manager * * Copyright 2016 Intel Corporation * * Author: Daniel Vetter <daniel.vetter@ffwll.ch> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #include <linux/idr.h>#include <linux/kref.h>#include <linux/wait.h> struct drm_file;struct drm_hw_lock; /* * Legacy DRI1 locking data structure. Only here instead of in drm_legacy.h for * include ordering reasons. * * DO NOT USE. */struct drm_lock_data {	struct drm_hw_lock *hw_lock;	struct drm_file *file_priv;	wait_queue_head_t lock_queue;	unsigned long lock_time;	spinlock_t spinlock;	uint32_t kernel_waiters;	uint32_t user_waiters;	int idle_has_lock;}; /** * struct drm_master - drm master structure * * @refcount: Refcount for this master object. * @dev: Link back to the DRM device * @driver_priv: Pointer to driver-private information. * @lessor: Lease holder * @lessee_id: id for lessees. Owners always have id 0 * @lessee_list: other lessees of the same master * @lessees: drm_masters leasing from this one * @leases: Objects leased to this drm_master. * @lessee_idr: All lessees under this owner (only used where lessor == NULL) * * Note that master structures are only relevant for the legacy/primary device * nodes, hence there can only be one per device, not one per drm_minor. */struct drm_master {	struct kref refcount;	struct drm_device *dev;	/**	 * @unique: Unique identifier: e.g. busid. Protected by	 * &drm_device.master_mutex.	 */	char *unique;	/**	 * @unique_len: Length of unique field. Protected by	 * &drm_device.master_mutex.	 */	int unique_len;	/**	 * @magic_map: Map of used authentication tokens. Protected by	 * &drm_device.master_mutex.	 */	struct idr magic_map;	void *driver_priv; 	/* Tree of display resource leases, each of which is a drm_master struct	 * All of these get activated simultaneously, so drm_device master points	 * at the top of the tree (for which lessor is NULL). Protected by	 * &drm_device.mode_config.idr_mutex.	 */ 	struct drm_master *lessor;	int	lessee_id;	struct list_head lessee_list;	struct list_head lessees;	struct idr leases;	struct idr lessee_idr;	/* private: */#if IS_ENABLED(CONFIG_DRM_LEGACY)	struct drm_lock_data lock;#endif}; struct drm_master *drm_master_get(struct drm_master *master);void drm_master_put(struct drm_master **master);bool drm_is_current_master(struct drm_file *fpriv); struct drm_master *drm_master_create(struct drm_device *dev); #endif