drm/amdgpu: handle SRIOV VCN revision parsing

For SR-IOV, the IP discovery revision number encodes
additional information.  Handle that case here.

v2: drop additional IP versions
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -379,8 +379,21 @@ int amdgpu_discovery_reg_base_init(struct amdgpu_device *adev)
 				  ip->major, ip->minor,
 				  ip->revision);
 
-			if (le16_to_cpu(ip->hw_id) == VCN_HWID)
+			if (le16_to_cpu(ip->hw_id) == VCN_HWID) {
+				if (amdgpu_sriov_vf(adev)) {
+					/* SR-IOV modifies each VCN’s revision (uint8)
+					 * Bit [5:0]: original revision value
+					 * Bit [7:6]: en/decode capability:
+					 *     0b00 : VCN function normally
+					 *     0b10 : encode is disabled
+					 *     0b01 : decode is disabled
+					 */
+					adev->vcn.sriov_config[adev->vcn.num_vcn_inst] =
+						(ip->revision & 0xc0) >> 6;
+					ip->revision &= ~0xc0;
+				}
 				adev->vcn.num_vcn_inst++;
+			}
 			if (le16_to_cpu(ip->hw_id) == SDMA0_HWID ||
 			    le16_to_cpu(ip->hw_id) == SDMA1_HWID ||
 			    le16_to_cpu(ip->hw_id) == SDMA2_HWID ||
@@ -917,10 +930,8 @@ static int amdgpu_discovery_set_mm_ip_blocks(struct amdgpu_device *adev)
 			break;
 		case IP_VERSION(3, 0, 0):
 		case IP_VERSION(3, 0, 16):
-		case IP_VERSION(3, 0, 64):
 		case IP_VERSION(3, 1, 1):
 		case IP_VERSION(3, 0, 2):
-		case IP_VERSION(3, 0, 192):
 			amdgpu_device_ip_block_add(adev, &vcn_v3_0_ip_block);
 			if (!amdgpu_sriov_vf(adev))
 				amdgpu_device_ip_block_add(adev, &jpeg_v3_0_ip_block);

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

@@ -134,8 +134,6 @@ int amdgpu_vcn_sw_init(struct amdgpu_device *adev)
 			adev->vcn.indirect_sram = true;
 		break;
 	case IP_VERSION(3, 0, 0):
-	case IP_VERSION(3, 0, 64):
-	case IP_VERSION(3, 0, 192):
 		if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(10, 3, 0))
 			fw_name = FIRMWARE_SIENNA_CICHLID;
 		else

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

@@ -235,6 +235,7 @@ struct amdgpu_vcn {
 
 	uint8_t	num_vcn_inst;
 	struct amdgpu_vcn_inst	 inst[AMDGPU_MAX_VCN_INSTANCES];
+	uint8_t			 sriov_config[AMDGPU_MAX_VCN_INSTANCES];
 	struct amdgpu_vcn_reg	 internal;
 	struct mutex		 vcn_pg_lock;
 	struct mutex		vcn1_jpeg1_workaround;

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

@@ -182,8 +182,6 @@ static int nv_query_video_codecs(struct amdgpu_device *adev, bool encode,
 {
 	switch (adev->ip_versions[UVD_HWIP][0]) {
 	case IP_VERSION(3, 0, 0):
-	case IP_VERSION(3, 0, 64):
-	case IP_VERSION(3, 0, 192):
 		if (amdgpu_sriov_vf(adev)) {
 			if (encode)
 				*codecs = &sriov_sc_video_codecs_encode;