drm/amdgpu: enable Doorbell support for Renoir (v2)

Add VCN range aperture to NBIO 7.0

v2: rebase (Alex)
Acked-by: Huang Rui <ray.huang@amd.com>
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/nbio_v7_0.c

@@ -91,6 +91,26 @@ static void nbio_v7_0_sdma_doorbell_range(struct amdgpu_device *adev, int instan
 	WREG32(reg, doorbell_range);
 }
 
+static void nbio_v7_0_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell,
+					 int doorbell_index, int instance)
+{
+	u32 reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH0_DOORBELL_RANGE);
+
+	u32 doorbell_range = RREG32(reg);
+
+	if (use_doorbell) {
+		doorbell_range = REG_SET_FIELD(doorbell_range,
+					       BIF_MMSCH0_DOORBELL_RANGE, OFFSET,
+					       doorbell_index);
+		doorbell_range = REG_SET_FIELD(doorbell_range,
+					       BIF_MMSCH0_DOORBELL_RANGE, SIZE, 8);
+	} else
+		doorbell_range = REG_SET_FIELD(doorbell_range,
+					       BIF_MMSCH0_DOORBELL_RANGE, SIZE, 0);
+
+	WREG32(reg, doorbell_range);
+}
+
 static void nbio_v7_0_enable_doorbell_aperture(struct amdgpu_device *adev,
 					       bool enable)
 {
@@ -282,6 +302,7 @@ const struct amdgpu_nbio_funcs nbio_v7_0_funcs = {
 	.hdp_flush = nbio_v7_0_hdp_flush,
 	.get_memsize = nbio_v7_0_get_memsize,
 	.sdma_doorbell_range = nbio_v7_0_sdma_doorbell_range,
+	.vcn_doorbell_range = nbio_v7_0_vcn_doorbell_range,
 	.enable_doorbell_aperture = nbio_v7_0_enable_doorbell_aperture,
 	.enable_doorbell_selfring_aperture = nbio_v7_0_enable_doorbell_selfring_aperture,
 	.ih_doorbell_range = nbio_v7_0_ih_doorbell_range,

drivers/gpu/drm/amd/amdgpu/vega10_reg_init.c

@@ -81,6 +81,10 @@ void vega10_doorbell_index_init(struct amdgpu_device *adev)
 	adev->doorbell_index.uvd_vce.vce_ring2_3 = AMDGPU_DOORBELL64_VCE_RING2_3;
 	adev->doorbell_index.uvd_vce.vce_ring4_5 = AMDGPU_DOORBELL64_VCE_RING4_5;
 	adev->doorbell_index.uvd_vce.vce_ring6_7 = AMDGPU_DOORBELL64_VCE_RING6_7;
+	adev->doorbell_index.vcn.vcn_ring0_1 = AMDGPU_DOORBELL64_VCN0_1;
+	adev->doorbell_index.vcn.vcn_ring2_3 = AMDGPU_DOORBELL64_VCN2_3;
+	adev->doorbell_index.vcn.vcn_ring4_5 = AMDGPU_DOORBELL64_VCN4_5;
+	adev->doorbell_index.vcn.vcn_ring6_7 = AMDGPU_DOORBELL64_VCN6_7;
 
 	adev->doorbell_index.first_non_cp = AMDGPU_DOORBELL64_FIRST_NON_CP;
 	adev->doorbell_index.last_non_cp = AMDGPU_DOORBELL64_LAST_NON_CP;