drm/amdgpu: add function to decode ip version

Add function to decode IP version.
Signed-off-by: Likun Gao <Likun.Gao@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.h

@@ -670,6 +670,9 @@ enum amd_hw_ip_block_type {
 
 #define HW_ID_MAX		300
 #define IP_VERSION(mj, mn, rv) (((mj) << 16) | ((mn) << 8) | (rv))
+#define IP_VERSION_MAJ(ver) ((ver) >> 16)
+#define IP_VERSION_MIN(ver) (((ver) >> 8) & 0xFF)
+#define IP_VERSION_REV(ver) ((ver) & 0xFF)
 
 struct amd_powerplay {
 	void *pp_handle;

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

@@ -760,3 +760,36 @@ int amdgpu_ucode_init_bo(struct amdgpu_device *adev)
 	}
 	return 0;
 }
+
+void amdgpu_ucode_ip_version_decode(struct amdgpu_device *adev, int block_type, char *ucode_prefix, int len)
+{
+	int maj, min, rev;
+	char *ip_name;
+	uint32_t version = adev->ip_versions[block_type][0];
+
+	switch (block_type) {
+	case GC_HWIP:
+		ip_name = "gc";
+		break;
+	case SDMA0_HWIP:
+		ip_name = "sdma";
+		break;
+	case MP0_HWIP:
+		ip_name = "psp";
+		break;
+	case MP1_HWIP:
+		ip_name = "smu";
+		break;
+	case UVD_HWIP:
+		ip_name = "vcn";
+		break;
+	default:
+		BUG();
+	}
+
+	maj = IP_VERSION_MAJ(version);
+	min = IP_VERSION_MIN(version);
+	rev = IP_VERSION_REV(version);
+
+	snprintf(ucode_prefix, len, "%s_%d_%d_%d", ip_name, maj, min, rev);
+}

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

@@ -463,4 +463,6 @@ amdgpu_ucode_get_load_type(struct amdgpu_device *adev, int load_type);
 
 const char *amdgpu_ucode_name(enum AMDGPU_UCODE_ID ucode_id);
 
+void amdgpu_ucode_ip_version_decode(struct amdgpu_device *adev, int block_type, char *ucode_prefix, int len);
+
 #endif