[PATCH 1/6] drm/amdgpu: Disable vcn decode ring for sriov navi12

[Emily Deng]

Since vcn decoding ring is not required, so just disable it.

Signed-off-by: Frank.Min <Frank.Min at amd.com>
Signed-off-by: Emily Deng <Emily.Deng at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c |  4 +++-
 drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c   | 29 ++++++++++++-------------
 2 files changed, 17 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 8844f650b17f..5d5c41c9d5aa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -427,7 +427,9 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
 			if (adev->uvd.harvest_config & (1 << i))
 				continue;
 
-			if (adev->vcn.inst[i].ring_dec.sched.ready)
+			if (adev->vcn.inst[i].ring_dec.sched.ready ||
+				(adev->asic_type == CHIP_NAVI12 &&
+				amdgpu_sriov_vf(adev)))
 				++num_rings;
 		}
 		ib_start_alignment = 16;
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
index 116b9643d5ba..e4b61f3a45fb 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
@@ -220,21 +220,20 @@ static int vcn_v2_0_hw_init(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	struct amdgpu_ring *ring = &adev->vcn.inst->ring_dec;
-	int i, r;
+	int i, r = -1;
 
 	adev->nbio.funcs->vcn_doorbell_range(adev, ring->use_doorbell,
 					     ring->doorbell_index, 0);
 
-	if (amdgpu_sriov_vf(adev))
+	if (amdgpu_sriov_vf(adev)) {
 		vcn_v2_0_start_sriov(adev);
-
-	r = amdgpu_ring_test_helper(ring);
-	if (r)
-		goto done;
-
-	//Disable vcn decode for sriov
-	if (amdgpu_sriov_vf(adev))
-		ring->sched.ready = false;
+		if (adev->asic_type == CHIP_NAVI12)
+			ring->sched.ready = false;
+	} else {
+		r = amdgpu_ring_test_helper(ring);
+		if (r)
+			goto done;
+	}
 
 	for (i = 0; i < adev->vcn.num_enc_rings; ++i) {
 		ring = &adev->vcn.inst->ring_enc[i];
@@ -245,8 +244,11 @@ static int vcn_v2_0_hw_init(void *handle)
 
 done:
 	if (!r)
-		DRM_INFO("VCN decode and encode initialized successfully(under %s).\n",
-			(adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)?"DPG Mode":"SPG Mode");
+		DRM_INFO("VCN %s encode initialized successfully(under %s).\n",
+			(adev->asic_type == CHIP_NAVI12 &&
+				amdgpu_sriov_vf(adev))?"":"decode and",
+			(adev->pg_flags &
+				AMD_PG_SUPPORT_VCN_DPG)?"DPG Mode":"SPG Mode");
 
 	return r;
 }
@@ -1719,9 +1721,6 @@ 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)
-- 
2.25.1