1 files changed, 83 insertions, 50 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index c2fd6f3076a6..9e549923622b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -49,6 +49,7 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
 	}
 
 	memset(&ti, 0, sizeof(struct amdgpu_task_info));
+	adev->job_hang = true;
 
 	if (amdgpu_gpu_recovery &&
 	    amdgpu_ring_soft_recovery(ring, job->vmid, s_job->s_fence->parent)) {
@@ -82,12 +83,14 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
 	}
 
 exit:
+	adev->job_hang = false;
 	drm_dev_exit(idx);
 	return DRM_GPU_SCHED_STAT_NOMINAL;
 }
 
-int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
-		     struct amdgpu_job **job, struct amdgpu_vm *vm)
+int amdgpu_job_alloc(struct amdgpu_device *adev, struct amdgpu_vm *vm,
+		     struct drm_sched_entity *entity, void *owner,
+		     unsigned int num_ibs, struct amdgpu_job **job)
 {
 	if (num_ibs == 0)
 		return -EINVAL;
@@ -102,33 +105,56 @@ int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
 	 */
 	(*job)->base.sched = &adev->rings[0]->sched;
 	(*job)->vm = vm;
-	(*job)->num_ibs = num_ibs;
 
-	amdgpu_sync_create(&(*job)->sync);
-	amdgpu_sync_create(&(*job)->sched_sync);
+	amdgpu_sync_create(&(*job)->explicit_sync);
 	(*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
 	(*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET;
 
-	return 0;
+	if (!entity)
+		return 0;
+
+	return drm_sched_job_init(&(*job)->base, entity, owner);
 }
 
-int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size,
-		enum amdgpu_ib_pool_type pool_type,
-		struct amdgpu_job **job)
+int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev,
+			     struct drm_sched_entity *entity, void *owner,
+			     size_t size, enum amdgpu_ib_pool_type pool_type,
+			     struct amdgpu_job **job)
 {
 	int r;
 
-	r = amdgpu_job_alloc(adev, 1, job, NULL);
+	r = amdgpu_job_alloc(adev, NULL, entity, owner, 1, job);
 	if (r)
 		return r;
 
+	(*job)->num_ibs = 1;
 	r = amdgpu_ib_get(adev, NULL, size, pool_type, &(*job)->ibs[0]);
-	if (r)
+	if (r) {
+		if (entity)
+			drm_sched_job_cleanup(&(*job)->base);
 		kfree(*job);
+	}
 
 	return r;
 }
 
+void amdgpu_job_set_resources(struct amdgpu_job *job, struct amdgpu_bo *gds,
+			      struct amdgpu_bo *gws, struct amdgpu_bo *oa)
+{
+	if (gds) {
+		job->gds_base = amdgpu_bo_gpu_offset(gds) >> PAGE_SHIFT;
+		job->gds_size = amdgpu_bo_size(gds) >> PAGE_SHIFT;
+	}
+	if (gws) {
+		job->gws_base = amdgpu_bo_gpu_offset(gws) >> PAGE_SHIFT;
+		job->gws_size = amdgpu_bo_size(gws) >> PAGE_SHIFT;
+	}
+	if (oa) {
+		job->oa_base = amdgpu_bo_gpu_offset(oa) >> PAGE_SHIFT;
+		job->oa_size = amdgpu_bo_size(oa) >> PAGE_SHIFT;
+	}
+}
+
 void amdgpu_job_free_resources(struct amdgpu_job *job)
 {
 	struct amdgpu_ring *ring = to_amdgpu_ring(job->base.sched);
@@ -147,17 +173,40 @@ static void amdgpu_job_free_cb(struct drm_sched_job *s_job)
 
 	drm_sched_job_cleanup(s_job);
 
-	amdgpu_sync_free(&job->sync);
-	amdgpu_sync_free(&job->sched_sync);
+	amdgpu_sync_free(&job->explicit_sync);
+
+	/* only put the hw fence if has embedded fence */
+	if (!job->hw_fence.ops)
+		kfree(job);
+	else
+		dma_fence_put(&job->hw_fence);
+}
+
+void amdgpu_job_set_gang_leader(struct amdgpu_job *job,
+				struct amdgpu_job *leader)
+{
+	struct dma_fence *fence = &leader->base.s_fence->scheduled;
+
+	WARN_ON(job->gang_submit);
 
-	dma_fence_put(&job->hw_fence);
+	/*
+	 * Don't add a reference when we are the gang leader to avoid circle
+	 * dependency.
+	 */
+	if (job != leader)
+		dma_fence_get(fence);
+	job->gang_submit = fence;
 }
 
 void amdgpu_job_free(struct amdgpu_job *job)
 {
+	if (job->base.entity)
+		drm_sched_job_cleanup(&job->base);
+
 	amdgpu_job_free_resources(job);
-	amdgpu_sync_free(&job->sync);
-	amdgpu_sync_free(&job->sched_sync);
+	amdgpu_sync_free(&job->explicit_sync);
+	if (job->gang_submit != &job->base.s_fence->scheduled)
+		dma_fence_put(job->gang_submit);
 
 	if (!job->hw_fence.ops)
 		kfree(job);
@@ -165,25 +214,16 @@ void amdgpu_job_free(struct amdgpu_job *job)
 		dma_fence_put(&job->hw_fence);
 }
 
-int amdgpu_job_submit(struct amdgpu_job *job, struct drm_sched_entity *entity,
-		      void *owner, struct dma_fence **f)
+struct dma_fence *amdgpu_job_submit(struct amdgpu_job *job)
 {
-	int r;
-
-	if (!f)
-		return -EINVAL;
-
-	r = drm_sched_job_init(&job->base, entity, owner);
-	if (r)
-		return r;
+	struct dma_fence *f;
 
 	drm_sched_job_arm(&job->base);
-
-	*f = dma_fence_get(&job->base.s_fence->finished);
+	f = dma_fence_get(&job->base.s_fence->finished);
 	amdgpu_job_free_resources(job);
 	drm_sched_entity_push_job(&job->base);
 
-	return 0;
+	return f;
 }
 
 int amdgpu_job_submit_direct(struct amdgpu_job *job, struct amdgpu_ring *ring,
@@ -201,30 +241,22 @@ int amdgpu_job_submit_direct(struct amdgpu_job *job, struct amdgpu_ring *ring,
 	return 0;
 }
 
-static struct dma_fence *amdgpu_job_dependency(struct drm_sched_job *sched_job,
-					       struct drm_sched_entity *s_entity)
+static struct dma_fence *
+amdgpu_job_prepare_job(struct drm_sched_job *sched_job,
+		      struct drm_sched_entity *s_entity)
 {
 	struct amdgpu_ring *ring = to_amdgpu_ring(s_entity->rq->sched);
 	struct amdgpu_job *job = to_amdgpu_job(sched_job);
-	struct amdgpu_vm *vm = job->vm;
-	struct dma_fence *fence;
+	struct dma_fence *fence = NULL;
 	int r;
 
-	fence = amdgpu_sync_get_fence(&job->sync);
-	if (fence && drm_sched_dependency_optimized(fence, s_entity)) {
-		r = amdgpu_sync_fence(&job->sched_sync, fence);
-		if (r)
-			DRM_ERROR("Error adding fence (%d)\n", r);
-	}
+	if (!fence && job->gang_submit)
+		fence = amdgpu_device_switch_gang(ring->adev, job->gang_submit);
 
-	while (fence == NULL && vm && !job->vmid) {
-		r = amdgpu_vmid_grab(vm, ring, &job->sync,
-				     &job->base.s_fence->finished,
-				     job);
+	while (!fence && job->vm && !job->vmid) {
+		r = amdgpu_vmid_grab(job->vm, ring, job, &fence);
 		if (r)
 			DRM_ERROR("Error getting VM ID (%d)\n", r);
-
-		fence = amdgpu_sync_get_fence(&job->sync);
 	}
 
 	return fence;
@@ -233,6 +265,7 @@ static struct dma_fence *amdgpu_job_dependency(struct drm_sched_job *sched_job,
 static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job)
 {
 	struct amdgpu_ring *ring = to_amdgpu_ring(sched_job->sched);
+	struct amdgpu_device *adev = ring->adev;
 	struct dma_fence *fence = NULL, *finished;
 	struct amdgpu_job *job;
 	int r = 0;
@@ -240,12 +273,12 @@ static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job)
 	job = to_amdgpu_job(sched_job);
 	finished = &job->base.s_fence->finished;
 
-	BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL));
-
 	trace_amdgpu_sched_run_job(job);
 
-	if (job->vram_lost_counter != atomic_read(&ring->adev->vram_lost_counter))
-		dma_fence_set_error(finished, -ECANCELED);/* skip IB as well if VRAM lost */
+	/* Skip job if VRAM is lost and never resubmit gangs */
+	if (job->vram_lost_counter != atomic_read(&adev->vram_lost_counter) ||
+	    (job->job_run_counter && job->gang_submit))
+		dma_fence_set_error(finished, -ECANCELED);
 
 	if (finished->error < 0) {
 		DRM_INFO("Skip scheduling IBs!\n");
@@ -298,7 +331,7 @@ void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched)
 }
 
 const struct drm_sched_backend_ops amdgpu_sched_ops = {
-	.dependency = amdgpu_job_dependency,
+	.prepare_job = amdgpu_job_prepare_job,
 	.run_job = amdgpu_job_run,
 	.timedout_job = amdgpu_job_timedout,
 	.free_job = amdgpu_job_free_cb