107 lines
3.4 KiB
C
107 lines
3.4 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _DRM_AUTH_H_
|
|
#define _DRM_AUTH_H_
|
|
|
|
/*
|
|
* 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
|
|
* @lock: DRI1 lock information.
|
|
* @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;
|
|
struct drm_lock_data lock;
|
|
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;
|
|
};
|
|
|
|
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
|