Changeset View
Changeset View
Standalone View
Standalone View
sys/dev/drm/core/include/drm/drm_auth.h
- This file was added.
#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 |