mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
115 lines
3.5 KiB
115 lines
3.5 KiB
#ifndef _DRM_AUTH_H_ |
|
#define _DRM_AUTH_H_ |
|
|
|
/* |
|
* Internal Header for the Direct Rendering Manager |
|
* |
|
* Copyright 2016 Intel Corporation |
|
* |
|
* Author: Daniel Vetter <[email protected]> |
|
* |
|
* 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
|
|
|