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/* SPDX-License-Identifier: MIT */
#ifndef _DRM_GPU_SCHEDULER_INTERNAL_H_
#define _DRM_GPU_SCHEDULER_INTERNAL_H_
/* Used to choose between FIFO and RR job-scheduling */
extern int drm_sched_policy;
#define DRM_SCHED_POLICY_RR 0
#define DRM_SCHED_POLICY_FIFO 1
void drm_sched_wakeup(struct drm_gpu_scheduler *sched);
void drm_sched_rq_add_entity(struct drm_sched_rq *rq,
struct drm_sched_entity *entity);
void drm_sched_rq_remove_entity(struct drm_sched_rq *rq,
struct drm_sched_entity *entity);
void drm_sched_rq_update_fifo_locked(struct drm_sched_entity *entity,
struct drm_sched_rq *rq, ktime_t ts);
void drm_sched_entity_select_rq(struct drm_sched_entity *entity);
struct drm_sched_job *drm_sched_entity_pop_job(struct drm_sched_entity *entity);
struct drm_sched_fence *drm_sched_fence_alloc(struct drm_sched_entity *s_entity,
void *owner);
void drm_sched_fence_init(struct drm_sched_fence *fence,
struct drm_sched_entity *entity);
void drm_sched_fence_free(struct drm_sched_fence *fence);
void drm_sched_fence_scheduled(struct drm_sched_fence *fence,
struct dma_fence *parent);
void drm_sched_fence_finished(struct drm_sched_fence *fence, int result);
/**
* drm_sched_entity_queue_pop - Low level helper for popping queued jobs
*
* @entity: scheduler entity
*
* Low level helper for popping queued jobs.
*
* Returns: The job dequeued or NULL.
*/
static inline struct drm_sched_job *
drm_sched_entity_queue_pop(struct drm_sched_entity *entity)
{
struct spsc_node *node;
node = spsc_queue_pop(&entity->job_queue);
if (!node)
return NULL;
return container_of(node, struct drm_sched_job, queue_node);
}
/**
* drm_sched_entity_queue_peek - Low level helper for peeking at the job queue
*
* @entity: scheduler entity
*
* Low level helper for peeking at the job queue
*
* Returns: The job at the head of the queue or NULL.
*/
static inline struct drm_sched_job *
drm_sched_entity_queue_peek(struct drm_sched_entity *entity)
{
struct spsc_node *node;
node = spsc_queue_peek(&entity->job_queue);
if (!node)
return NULL;
return container_of(node, struct drm_sched_job, queue_node);
}
/* Return true if entity could provide a job. */
static inline bool
drm_sched_entity_is_ready(struct drm_sched_entity *entity)
{
if (!spsc_queue_count(&entity->job_queue))
return false;
if (READ_ONCE(entity->dependency))
return false;
return true;
}
#endif
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