[linux-block.git] / include / drm / gpu_scheduler.h

/*
 * Copyright 2015 Advanced Micro Devices, Inc.
 *
 * 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 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
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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_GPU_SCHEDULER_H_
#define _DRM_GPU_SCHEDULER_H_

#include <drm/spsc_queue.h>
#include <linux/dma-fence.h>

#define MAX_WAIT_SCHED_ENTITY_Q_EMPTY msecs_to_jiffies(1000)

struct drm_gpu_scheduler;
struct drm_sched_rq;

enum drm_sched_priority {
	DRM_SCHED_PRIORITY_MIN,
	DRM_SCHED_PRIORITY_LOW = DRM_SCHED_PRIORITY_MIN,
	DRM_SCHED_PRIORITY_NORMAL,
	DRM_SCHED_PRIORITY_HIGH_SW,
	DRM_SCHED_PRIORITY_HIGH_HW,
	DRM_SCHED_PRIORITY_KERNEL,
	DRM_SCHED_PRIORITY_MAX,
	DRM_SCHED_PRIORITY_INVALID = -1,
	DRM_SCHED_PRIORITY_UNSET = -2
};

/**
 * struct drm_sched_entity - A wrapper around a job queue (typically
 * attached to the DRM file_priv).
 *
 * @list: used to append this struct to the list of entities in the
 *        runqueue.
 * @rq: runqueue to which this entity belongs.
 * @rq_lock: lock to modify the runqueue to which this entity belongs.
 * @sched: the scheduler instance to which this entity is enqueued.
 * @job_queue: the list of jobs of this entity.
 * @fence_seq: a linearly increasing seqno incremented with each
 *             new &drm_sched_fence which is part of the entity.
 * @fence_context: a unique context for all the fences which belong
 *                 to this entity.
 *                 The &drm_sched_fence.scheduled uses the
 *                 fence_context but &drm_sched_fence.finished uses
 *                 fence_context + 1.
 * @dependency: the dependency fence of the job which is on the top
 *              of the job queue.
 * @cb: callback for the dependency fence above.
 * @guilty: points to ctx's guilty.
 * @fini_status: contains the exit status in case the process was signalled.
 * @last_scheduled: points to the finished fence of the last scheduled job.
 *
 * Entities will emit jobs in order to their corresponding hardware
 * ring, and the scheduler will alternate between entities based on
 * scheduling policy.
 */
struct drm_sched_entity {
	struct list_head		list;
	struct drm_sched_rq		*rq;
	spinlock_t			rq_lock;
	struct drm_gpu_scheduler	*sched;

	struct spsc_queue		job_queue;

	atomic_t			fence_seq;
	uint64_t			fence_context;

	struct dma_fence		*dependency;
	struct dma_fence_cb		cb;
	atomic_t			*guilty;
	struct dma_fence                *last_scheduled;
};

/**
 * struct drm_sched_rq - queue of entities to be scheduled.
 *
 * @lock: to modify the entities list.
 * @sched: the scheduler to which this rq belongs to.
 * @entities: list of the entities to be scheduled.
 * @current_entity: the entity which is to be scheduled.
 *
 * Run queue is a set of entities scheduling command submissions for
 * one specific ring. It implements the scheduling policy that selects
 * the next entity to emit commands from.
 */
struct drm_sched_rq {
	spinlock_t			lock;
	struct drm_gpu_scheduler	*sched;
	struct list_head		entities;
	struct drm_sched_entity		*current_entity;
};

/**
 * struct drm_sched_fence - fences corresponding to the scheduling of a job.
 */
struct drm_sched_fence {
        /**
         * @scheduled: this fence is what will be signaled by the scheduler
         * when the job is scheduled.
         */
	struct dma_fence		scheduled;

        /**
         * @finished: this fence is what will be signaled by the scheduler
         * when the job is completed.
         *
         * When setting up an out fence for the job, you should use
         * this, since it's available immediately upon
         * drm_sched_job_init(), and the fence returned by the driver
         * from run_job() won't be created until the dependencies have
         * resolved.
         */
	struct dma_fence		finished;

        /**
         * @cb: the callback for the parent fence below.
         */
	struct dma_fence_cb		cb;
        /**
         * @parent: the fence returned by &drm_sched_backend_ops.run_job
         * when scheduling the job on hardware. We signal the
         * &drm_sched_fence.finished fence once parent is signalled.
         */
	struct dma_fence		*parent;
        /**
         * @sched: the scheduler instance to which the job having this struct
         * belongs to.
         */
	struct drm_gpu_scheduler	*sched;
        /**
         * @lock: the lock used by the scheduled and the finished fences.
         */
	spinlock_t			lock;
        /**
         * @owner: job owner for debugging
         */
	void				*owner;
};

struct drm_sched_fence *to_drm_sched_fence(struct dma_fence *f);

/**
 * struct drm_sched_job - A job to be run by an entity.
 *
 * @queue_node: used to append this struct to the queue of jobs in an entity.
 * @sched: the scheduler instance on which this job is scheduled.
 * @s_fence: contains the fences for the scheduling of job.
 * @finish_cb: the callback for the finished fence.
 * @finish_work: schedules the function @drm_sched_job_finish once the job has
 *               finished to remove the job from the
 *               @drm_gpu_scheduler.ring_mirror_list.
 * @node: used to append this struct to the @drm_gpu_scheduler.ring_mirror_list.
 * @work_tdr: schedules a delayed call to @drm_sched_job_timedout after the timeout
 *            interval is over.
 * @id: a unique id assigned to each job scheduled on the scheduler.
 * @karma: increment on every hang caused by this job. If this exceeds the hang
 *         limit of the scheduler then the job is marked guilty and will not
 *         be scheduled further.
 * @s_priority: the priority of the job.
 * @entity: the entity to which this job belongs.
 *
 * A job is created by the driver using drm_sched_job_init(), and
 * should call drm_sched_entity_push_job() once it wants the scheduler
 * to schedule the job.
 */
struct drm_sched_job {
	struct spsc_node		queue_node;
	struct drm_gpu_scheduler	*sched;
	struct drm_sched_fence		*s_fence;
	struct dma_fence_cb		finish_cb;
	struct work_struct		finish_work;
	struct list_head		node;
	struct delayed_work		work_tdr;
	uint64_t			id;
	atomic_t			karma;
	enum drm_sched_priority		s_priority;
	struct drm_sched_entity  *entity;
};

static inline bool drm_sched_invalidate_job(struct drm_sched_job *s_job,
					    int threshold)
{
	return (s_job && atomic_inc_return(&s_job->karma) > threshold);
}

/**
 * struct drm_sched_backend_ops
 *
 * Define the backend operations called by the scheduler,
 * these functions should be implemented in driver side.
 */
struct drm_sched_backend_ops {
	/**
         * @dependency: Called when the scheduler is considering scheduling
         * this job next, to get another struct dma_fence for this job to
	 * block on.  Once it returns NULL, run_job() may be called.
	 */
	struct dma_fence *(*dependency)(struct drm_sched_job *sched_job,
					struct drm_sched_entity *s_entity);

	/**
         * @run_job: Called to execute the job once all of the dependencies
         * have been resolved.  This may be called multiple times, if
	 * timedout_job() has happened and drm_sched_job_recovery()
	 * decides to try it again.
	 */
	struct dma_fence *(*run_job)(struct drm_sched_job *sched_job);

	/**
         * @timedout_job: Called when a job has taken too long to execute,
         * to trigger GPU recovery.
	 */
	void (*timedout_job)(struct drm_sched_job *sched_job);

	/**
         * @free_job: Called once the job's finished fence has been signaled
         * and it's time to clean it up.
	 */
	void (*free_job)(struct drm_sched_job *sched_job);
};

/**
 * struct drm_gpu_scheduler
 *
 * @ops: backend operations provided by the driver.
 * @hw_submission_limit: the max size of the hardware queue.
 * @timeout: the time after which a job is removed from the scheduler.
 * @name: name of the ring for which this scheduler is being used.
 * @sched_rq: priority wise array of run queues.
 * @wake_up_worker: the wait queue on which the scheduler sleeps until a job
 *                  is ready to be scheduled.
 * @job_scheduled: once @drm_sched_entity_do_release is called the scheduler
 *                 waits on this wait queue until all the scheduled jobs are
 *                 finished.
 * @hw_rq_count: the number of jobs currently in the hardware queue.
 * @job_id_count: used to assign unique id to the each job.
 * @thread: the kthread on which the scheduler which run.
 * @ring_mirror_list: the list of jobs which are currently in the job queue.
 * @job_list_lock: lock to protect the ring_mirror_list.
 * @hang_limit: once the hangs by a job crosses this limit then it is marked
 *              guilty and it will be considered for scheduling further.
 *
 * One scheduler is implemented for each hardware ring.
 */
struct drm_gpu_scheduler {
	const struct drm_sched_backend_ops	*ops;
	uint32_t			hw_submission_limit;
	long				timeout;
	const char			*name;
	struct drm_sched_rq		sched_rq[DRM_SCHED_PRIORITY_MAX];
	wait_queue_head_t		wake_up_worker;
	wait_queue_head_t		job_scheduled;
	atomic_t			hw_rq_count;
	atomic64_t			job_id_count;
	struct task_struct		*thread;
	struct list_head		ring_mirror_list;
	spinlock_t			job_list_lock;
	int				hang_limit;
};

int drm_sched_init(struct drm_gpu_scheduler *sched,
		   const struct drm_sched_backend_ops *ops,
		   uint32_t hw_submission, unsigned hang_limit, long timeout,
		   const char *name);
void drm_sched_fini(struct drm_gpu_scheduler *sched);

int drm_sched_entity_init(struct drm_sched_entity *entity,
			  struct drm_sched_rq **rq_list,
			  unsigned int num_rq_list,
			  atomic_t *guilty);
long drm_sched_entity_flush(struct drm_gpu_scheduler *sched,
			   struct drm_sched_entity *entity, long timeout);
void drm_sched_entity_fini(struct drm_gpu_scheduler *sched,
			   struct drm_sched_entity *entity);
void drm_sched_entity_destroy(struct drm_gpu_scheduler *sched,
			   struct drm_sched_entity *entity);
void drm_sched_entity_push_job(struct drm_sched_job *sched_job,
			       struct drm_sched_entity *entity);
void drm_sched_entity_set_rq(struct drm_sched_entity *entity,
			     struct drm_sched_rq *rq);

struct drm_sched_fence *drm_sched_fence_create(
	struct drm_sched_entity *s_entity, void *owner);
void drm_sched_fence_scheduled(struct drm_sched_fence *fence);
void drm_sched_fence_finished(struct drm_sched_fence *fence);
int drm_sched_job_init(struct drm_sched_job *job,
		       struct drm_gpu_scheduler *sched,
		       struct drm_sched_entity *entity,
		       void *owner);
void drm_sched_hw_job_reset(struct drm_gpu_scheduler *sched,
			    struct drm_sched_job *job);
void drm_sched_job_recovery(struct drm_gpu_scheduler *sched);
bool drm_sched_dependency_optimized(struct dma_fence* fence,
				    struct drm_sched_entity *entity);
void drm_sched_job_kickout(struct drm_sched_job *s_job);

#endif
Commit	Line	Data
1b1f42d8 LS	1	/*
	2	* Copyright 2015 Advanced Micro Devices, Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	*/
	23
	24	#ifndef _DRM_GPU_SCHEDULER_H_
	25	#define _DRM_GPU_SCHEDULER_H_
	26
	27	#include <drm/spsc_queue.h>
	28	#include <linux/dma-fence.h>
	29
741f01e6 AG	30	#define MAX_WAIT_SCHED_ENTITY_Q_EMPTY msecs_to_jiffies(1000)
741f01e6 AG	31
1b1f42d8 LS	32	struct drm_gpu_scheduler;
	33	struct drm_sched_rq;
	34
	35	enum drm_sched_priority {
	36	DRM_SCHED_PRIORITY_MIN,
	37	DRM_SCHED_PRIORITY_LOW = DRM_SCHED_PRIORITY_MIN,
	38	DRM_SCHED_PRIORITY_NORMAL,
	39	DRM_SCHED_PRIORITY_HIGH_SW,
	40	DRM_SCHED_PRIORITY_HIGH_HW,
	41	DRM_SCHED_PRIORITY_KERNEL,
	42	DRM_SCHED_PRIORITY_MAX,
	43	DRM_SCHED_PRIORITY_INVALID = -1,
	44	DRM_SCHED_PRIORITY_UNSET = -2
	45	};
	46
	47	/**
2d33948e ND	48	* struct drm_sched_entity - A wrapper around a job queue (typically
	49	* attached to the DRM file_priv).
	50	*
	51	* @list: used to append this struct to the list of entities in the
	52	* runqueue.
	53	* @rq: runqueue to which this entity belongs.
	54	* @rq_lock: lock to modify the runqueue to which this entity belongs.
	55	* @sched: the scheduler instance to which this entity is enqueued.
	56	* @job_queue: the list of jobs of this entity.
	57	* @fence_seq: a linearly increasing seqno incremented with each
	58	* new &drm_sched_fence which is part of the entity.
	59	* @fence_context: a unique context for all the fences which belong
	60	* to this entity.
	61	* The &drm_sched_fence.scheduled uses the
	62	* fence_context but &drm_sched_fence.finished uses
	63	* fence_context + 1.
	64	* @dependency: the dependency fence of the job which is on the top
	65	* of the job queue.
	66	* @cb: callback for the dependency fence above.
	67	* @guilty: points to ctx's guilty.
	68	* @fini_status: contains the exit status in case the process was signalled.
	69	* @last_scheduled: points to the finished fence of the last scheduled job.
1a61ee07 EA	70	*
	71	* Entities will emit jobs in order to their corresponding hardware
	72	* ring, and the scheduler will alternate between entities based on
	73	* scheduling policy.
2d33948e	74	*/
1b1f42d8 LS	75	struct drm_sched_entity {
	76	struct list_head list;
	77	struct drm_sched_rq *rq;
	78	spinlock_t rq_lock;
	79	struct drm_gpu_scheduler *sched;
	80
1b1f42d8 LS	81	struct spsc_queue job_queue;
	82
	83	atomic_t fence_seq;
	84	uint64_t fence_context;
	85
	86	struct dma_fence *dependency;
	87	struct dma_fence_cb cb;
2d33948e	88	atomic_t *guilty;
2d33948e	89	struct dma_fence *last_scheduled;
1b1f42d8 LS	90	};
	91
	92	/**
2d33948e ND	93	* struct drm_sched_rq - queue of entities to be scheduled.
	94	*
	95	* @lock: to modify the entities list.
8dc9fbbf	96	* @sched: the scheduler to which this rq belongs to.
2d33948e ND	97	* @entities: list of the entities to be scheduled.
	98	* @current_entity: the entity which is to be scheduled.
	99	*
1b1f42d8 LS	100	* Run queue is a set of entities scheduling command submissions for
	101	* one specific ring. It implements the scheduling policy that selects
	102	* the next entity to emit commands from.
2d33948e	103	*/
1b1f42d8 LS	104	struct drm_sched_rq {
1b1f42d8 LS	105	spinlock_t lock;
8dc9fbbf	106	struct drm_gpu_scheduler *sched;
1b1f42d8 LS	107	struct list_head entities;
	108	struct drm_sched_entity *current_entity;
	109	};
	110
2d33948e ND	111	/**
	112	* struct drm_sched_fence - fences corresponding to the scheduling of a job.
	113	*/
1b1f42d8	114	struct drm_sched_fence {
2d33948e ND	115	/**
	116	* @scheduled: this fence is what will be signaled by the scheduler
	117	* when the job is scheduled.
	118	*/
1b1f42d8	119	struct dma_fence scheduled;
1a61ee07	120
2d33948e ND	121	/**
	122	* @finished: this fence is what will be signaled by the scheduler
	123	* when the job is completed.
	124	*
	125	* When setting up an out fence for the job, you should use
	126	* this, since it's available immediately upon
	127	* drm_sched_job_init(), and the fence returned by the driver
	128	* from run_job() won't be created until the dependencies have
	129	* resolved.
	130	*/
1b1f42d8	131	struct dma_fence finished;
1a61ee07	132
2d33948e ND	133	/**
	134	* @cb: the callback for the parent fence below.
	135	*/
1b1f42d8	136	struct dma_fence_cb cb;
2d33948e ND	137	/**
	138	* @parent: the fence returned by &drm_sched_backend_ops.run_job
	139	* when scheduling the job on hardware. We signal the
	140	* &drm_sched_fence.finished fence once parent is signalled.
	141	*/
1b1f42d8	142	struct dma_fence *parent;
2d33948e ND	143	/**
	144	* @sched: the scheduler instance to which the job having this struct
	145	* belongs to.
	146	*/
1b1f42d8	147	struct drm_gpu_scheduler *sched;
2d33948e ND	148	/**
	149	* @lock: the lock used by the scheduled and the finished fences.
	150	*/
1b1f42d8	151	spinlock_t lock;
2d33948e ND	152	/**
	153	* @owner: job owner for debugging
	154	*/
1b1f42d8 LS	155	void *owner;
	156	};
	157
	158	struct drm_sched_fence to_drm_sched_fence(struct dma_fence f);
	159
1a61ee07	160	/**
2d33948e ND	161	* struct drm_sched_job - A job to be run by an entity.
	162	*
	163	* @queue_node: used to append this struct to the queue of jobs in an entity.
	164	* @sched: the scheduler instance on which this job is scheduled.
	165	* @s_fence: contains the fences for the scheduling of job.
	166	* @finish_cb: the callback for the finished fence.
	167	* @finish_work: schedules the function @drm_sched_job_finish once the job has
	168	* finished to remove the job from the
	169	* @drm_gpu_scheduler.ring_mirror_list.
	170	* @node: used to append this struct to the @drm_gpu_scheduler.ring_mirror_list.
	171	* @work_tdr: schedules a delayed call to @drm_sched_job_timedout after the timeout
	172	* interval is over.
	173	* @id: a unique id assigned to each job scheduled on the scheduler.
	174	* @karma: increment on every hang caused by this job. If this exceeds the hang
	175	* limit of the scheduler then the job is marked guilty and will not
	176	* be scheduled further.
	177	* @s_priority: the priority of the job.
	178	* @entity: the entity to which this job belongs.
1a61ee07 EA	179	*
	180	* A job is created by the driver using drm_sched_job_init(), and
	181	* should call drm_sched_entity_push_job() once it wants the scheduler
	182	* to schedule the job.
	183	*/
1b1f42d8 LS	184	struct drm_sched_job {
	185	struct spsc_node queue_node;
	186	struct drm_gpu_scheduler *sched;
	187	struct drm_sched_fence *s_fence;
	188	struct dma_fence_cb finish_cb;
	189	struct work_struct finish_work;
	190	struct list_head node;
	191	struct delayed_work work_tdr;
	192	uint64_t id;
	193	atomic_t karma;
	194	enum drm_sched_priority s_priority;
8ee3a52e	195	struct drm_sched_entity *entity;
1b1f42d8 LS	196	};
	197
	198	static inline bool drm_sched_invalidate_job(struct drm_sched_job *s_job,
	199	int threshold)
	200	{
	201	return (s_job && atomic_inc_return(&s_job->karma) > threshold);
	202	}
	203
	204	/**
2d33948e ND	205	* struct drm_sched_backend_ops
2d33948e ND	206	*
1b1f42d8	207	* Define the backend operations called by the scheduler,
2d33948e ND	208	* these functions should be implemented in driver side.
2d33948e ND	209	*/
1b1f42d8	210	struct drm_sched_backend_ops {
2d33948e ND	211	/**
	212	* @dependency: Called when the scheduler is considering scheduling
	213	* this job next, to get another struct dma_fence for this job to
1a61ee07 EA	214	* block on. Once it returns NULL, run_job() may be called.
1a61ee07 EA	215	*/
1b1f42d8 LS	216	struct dma_fence (dependency)(struct drm_sched_job *sched_job,
1b1f42d8 LS	217	struct drm_sched_entity *s_entity);
1a61ee07	218
2d33948e ND	219	/**
	220	* @run_job: Called to execute the job once all of the dependencies
	221	* have been resolved. This may be called multiple times, if
1a61ee07 EA	222	* timedout_job() has happened and drm_sched_job_recovery()
	223	* decides to try it again.
	224	*/
1b1f42d8	225	struct dma_fence (run_job)(struct drm_sched_job *sched_job);
1a61ee07	226
2d33948e ND	227	/**
	228	* @timedout_job: Called when a job has taken too long to execute,
	229	* to trigger GPU recovery.
1a61ee07	230	*/
1b1f42d8	231	void (timedout_job)(struct drm_sched_job sched_job);
1a61ee07	232
2d33948e ND	233	/**
	234	* @free_job: Called once the job's finished fence has been signaled
	235	* and it's time to clean it up.
1a61ee07	236	*/
1b1f42d8 LS	237	void (free_job)(struct drm_sched_job sched_job);
	238	};
	239
	240	/**
2d33948e ND	241	* struct drm_gpu_scheduler
	242	*
	243	* @ops: backend operations provided by the driver.
	244	* @hw_submission_limit: the max size of the hardware queue.
	245	* @timeout: the time after which a job is removed from the scheduler.
	246	* @name: name of the ring for which this scheduler is being used.
	247	* @sched_rq: priority wise array of run queues.
	248	* @wake_up_worker: the wait queue on which the scheduler sleeps until a job
	249	* is ready to be scheduled.
	250	* @job_scheduled: once @drm_sched_entity_do_release is called the scheduler
	251	* waits on this wait queue until all the scheduled jobs are
	252	* finished.
	253	* @hw_rq_count: the number of jobs currently in the hardware queue.
	254	* @job_id_count: used to assign unique id to the each job.
	255	* @thread: the kthread on which the scheduler which run.
	256	* @ring_mirror_list: the list of jobs which are currently in the job queue.
	257	* @job_list_lock: lock to protect the ring_mirror_list.
	258	* @hang_limit: once the hangs by a job crosses this limit then it is marked
	259	* guilty and it will be considered for scheduling further.
	260	*
	261	* One scheduler is implemented for each hardware ring.
	262	*/
1b1f42d8 LS	263	struct drm_gpu_scheduler {
	264	const struct drm_sched_backend_ops *ops;
	265	uint32_t hw_submission_limit;
	266	long timeout;
	267	const char *name;
	268	struct drm_sched_rq sched_rq[DRM_SCHED_PRIORITY_MAX];
	269	wait_queue_head_t wake_up_worker;
	270	wait_queue_head_t job_scheduled;
	271	atomic_t hw_rq_count;
	272	atomic64_t job_id_count;
	273	struct task_struct *thread;
	274	struct list_head ring_mirror_list;
	275	spinlock_t job_list_lock;
	276	int hang_limit;
	277	};
	278
	279	int drm_sched_init(struct drm_gpu_scheduler *sched,
	280	const struct drm_sched_backend_ops *ops,
	281	uint32_t hw_submission, unsigned hang_limit, long timeout,
	282	const char *name);
	283	void drm_sched_fini(struct drm_gpu_scheduler *sched);
	284
aa16b6c6 ND	285	int drm_sched_entity_init(struct drm_sched_entity *entity,
	286	struct drm_sched_rq **rq_list,
	287	unsigned int num_rq_list,
8344c53f	288	atomic_t *guilty);
180fc134	289	long drm_sched_entity_flush(struct drm_gpu_scheduler *sched,
741f01e6	290	struct drm_sched_entity *entity, long timeout);
1b1f42d8 LS	291	void drm_sched_entity_fini(struct drm_gpu_scheduler *sched,
1b1f42d8 LS	292	struct drm_sched_entity *entity);
180fc134 AG	293	void drm_sched_entity_destroy(struct drm_gpu_scheduler *sched,
180fc134 AG	294	struct drm_sched_entity *entity);
1b1f42d8 LS	295	void drm_sched_entity_push_job(struct drm_sched_job *sched_job,
	296	struct drm_sched_entity *entity);
	297	void drm_sched_entity_set_rq(struct drm_sched_entity *entity,
	298	struct drm_sched_rq *rq);
	299
1b1f42d8 LS	300	struct drm_sched_fence *drm_sched_fence_create(
	301	struct drm_sched_entity s_entity, void owner);
	302	void drm_sched_fence_scheduled(struct drm_sched_fence *fence);
	303	void drm_sched_fence_finished(struct drm_sched_fence *fence);
	304	int drm_sched_job_init(struct drm_sched_job *job,
	305	struct drm_gpu_scheduler *sched,
	306	struct drm_sched_entity *entity,
	307	void *owner);
	308	void drm_sched_hw_job_reset(struct drm_gpu_scheduler *sched,
	309	struct drm_sched_job *job);
	310	void drm_sched_job_recovery(struct drm_gpu_scheduler *sched);
	311	bool drm_sched_dependency_optimized(struct dma_fence* fence,
	312	struct drm_sched_entity *entity);
	313	void drm_sched_job_kickout(struct drm_sched_job *s_job);
	314
	315	#endif