drm/amdgpu: cleanup ring/ib test for SRIOV vcn2.0 (v2)

support IB test on dec/enc ring
disable ring test on dec/enc ring (MMSCH limitation)

v2: squash in unused variable warning fix
Singed-off-by: Ndarlington Opara <darlington.opara@amd.com>
Signed-off-by: NJinage Zhao <jiange.zhao@amd.com>
Signed-off-by: NMonk Liu <Monk.Liu@amd.com>
Acked-by: NLeo Liu <leo.liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -493,14 +493,9 @@ static int amdgpu_vcn_dec_get_destroy_msg(struct amdgpu_ring *ring, uint32_t han
 
 int amdgpu_vcn_dec_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 {
-	struct amdgpu_device *adev = ring->adev;
 	struct dma_fence *fence;
 	long r;
 
-	/* temporarily disable ib test for sriov */
-	if (amdgpu_sriov_vf(adev))
-		return 0;
-
 	r = amdgpu_vcn_dec_get_create_msg(ring, 1, NULL);
 	if (r)
 		goto error;
@@ -527,6 +522,9 @@ int amdgpu_vcn_enc_ring_test_ring(struct amdgpu_ring *ring)
 	unsigned i;
 	int r;
 
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
 	r = amdgpu_ring_alloc(ring, 16);
 	if (r)
 		return r;
@@ -656,15 +654,10 @@ static int amdgpu_vcn_enc_get_destroy_msg(struct amdgpu_ring *ring, uint32_t han
 
 int amdgpu_vcn_enc_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 {
-	struct amdgpu_device *adev = ring->adev;
 	struct dma_fence *fence = NULL;
 	struct amdgpu_bo *bo = NULL;
 	long r;
 
-	/* temporarily disable ib test for sriov */
-	if (amdgpu_sriov_vf(adev))
-		return 0;
-
 	r = amdgpu_bo_create_reserved(ring->adev, 128 * 1024, PAGE_SIZE,
 				      AMDGPU_GEM_DOMAIN_VRAM,
 				      &bo, NULL, NULL);

drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c

@@ -1647,6 +1647,9 @@ int vcn_v2_0_dec_ring_test_ring(struct amdgpu_ring *ring)
 	unsigned i;
 	int r;
 
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
 	WREG32(adev->vcn.inst[ring->me].external.scratch9, 0xCAFEDEAD);
 	r = amdgpu_ring_alloc(ring, 4);
 	if (r)