drm/amdgpu: use separate scheduler entity for VCE submissions

This allows us to remove the kernel context and use a better
priority for the submissions.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -1669,6 +1669,7 @@ struct amdgpu_vce {
 	struct amdgpu_ring	ring[AMDGPU_MAX_VCE_RINGS];
 	struct amdgpu_irq_src	irq;
 	unsigned		harvest_config;
+	struct amd_sched_entity	entity;
 };
 
 /*

drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c

@@ -74,6 +74,8 @@ static void amdgpu_vce_idle_work_handler(struct work_struct *work);
  */
 int amdgpu_vce_sw_init(struct amdgpu_device *adev, unsigned long size)
 {
+	struct amdgpu_ring *ring;
+	struct amd_sched_rq *rq;
 	const char *fw_name;
 	const struct common_firmware_header *hdr;
 	unsigned ucode_version, version_major, version_minor, binary_id;
@@ -170,6 +172,16 @@ int amdgpu_vce_sw_init(struct amdgpu_device *adev, unsigned long size)
 		return r;
 	}
 
+
+	ring = &adev->vce.ring[0];
+	rq = &ring->sched.sched_rq[AMD_SCHED_PRIORITY_NORMAL];
+	r = amd_sched_entity_init(&ring->sched, &adev->vce.entity,
+				  rq, amdgpu_sched_jobs);
+	if (r != 0) {
+		DRM_ERROR("Failed setting up VCE run queue.\n");
+		return r;
+	}
+
 	for (i = 0; i < AMDGPU_MAX_VCE_HANDLES; ++i) {
 		atomic_set(&adev->vce.handles[i], 0);
 		adev->vce.filp[i] = NULL;
@@ -190,6 +202,8 @@ int amdgpu_vce_sw_fini(struct amdgpu_device *adev)
 	if (adev->vce.vcpu_bo == NULL)
 		return 0;
 
+	amd_sched_entity_fini(&adev->vce.ring[0].sched, &adev->vce.entity);
+
 	amdgpu_bo_unref(&adev->vce.vcpu_bo);
 
 	amdgpu_ring_fini(&adev->vce.ring[0]);
@@ -481,7 +495,7 @@ int amdgpu_vce_get_destroy_msg(struct amdgpu_ring *ring, uint32_t handle,
 
 		amdgpu_job_free(job);
 	} else {
-		r = amdgpu_job_submit(job, ring, NULL,
+		r = amdgpu_job_submit(job, ring, &ring->adev->vce.entity,
 				      AMDGPU_FENCE_OWNER_UNDEFINED, &f);
 		if (r)
 			goto err;