drm/amdgpu: add VCN2.0 decode ib test

Add internal register offset for registers involving in ib tests
Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -349,14 +349,14 @@ static int amdgpu_vcn_dec_send_msg(struct amdgpu_ring *ring,
 
 	ib = &job->ibs[0];
 	addr = amdgpu_bo_gpu_offset(bo);
-	ib->ptr[0] = PACKET0(SOC15_REG_OFFSET(UVD, 0, mmUVD_GPCOM_VCPU_DATA0), 0);
+	ib->ptr[0] = PACKET0(adev->vcn.internal.data0, 0);
 	ib->ptr[1] = addr;
-	ib->ptr[2] = PACKET0(SOC15_REG_OFFSET(UVD, 0, mmUVD_GPCOM_VCPU_DATA1), 0);
+	ib->ptr[2] = PACKET0(adev->vcn.internal.data1, 0);
 	ib->ptr[3] = addr >> 32;
-	ib->ptr[4] = PACKET0(SOC15_REG_OFFSET(UVD, 0, mmUVD_GPCOM_VCPU_CMD), 0);
+	ib->ptr[4] = PACKET0(adev->vcn.internal.cmd, 0);
 	ib->ptr[5] = 0;
 	for (i = 6; i < 16; i += 2) {
-		ib->ptr[i] = PACKET0(SOC15_REG_OFFSET(UVD, 0, mmUVD_NO_OP), 0);
+		ib->ptr[i] = PACKET0(adev->vcn.internal.nop, 0);
 		ib->ptr[i+1] = 0;
 	}
 	ib->length_dw = 16;

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

@@ -88,6 +88,10 @@ struct dpg_pause_state {
 };
 
 struct amdgpu_vcn_reg{
+	unsigned	data0;
+	unsigned	data1;
+	unsigned	cmd;
+	unsigned	nop;
 	unsigned	scratch9;
 };
 

drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c

@@ -130,6 +130,14 @@ static int vcn_v1_0_sw_init(void *handle)
 
 	adev->vcn.internal.scratch9 = adev->vcn.external.scratch9 =
 		SOC15_REG_OFFSET(UVD, 0, mmUVD_SCRATCH9);
+	adev->vcn.internal.data0 = adev->vcn.external.data0 =
+		SOC15_REG_OFFSET(UVD, 0, mmUVD_GPCOM_VCPU_DATA0);
+	adev->vcn.internal.data1 = adev->vcn.external.data1 =
+		SOC15_REG_OFFSET(UVD, 0, mmUVD_GPCOM_VCPU_DATA1);
+	adev->vcn.internal.cmd = adev->vcn.external.cmd =
+		SOC15_REG_OFFSET(UVD, 0, mmUVD_GPCOM_VCPU_CMD);
+	adev->vcn.internal.nop = adev->vcn.external.nop =
+		SOC15_REG_OFFSET(UVD, 0, mmUVD_NO_OP);
 
 	for (i = 0; i < adev->vcn.num_enc_rings; ++i) {
 		ring = &adev->vcn.ring_enc[i];