drm/amdgpu: update ip discovery header to v4

version 4 supports 64bit ip base address
Signed-off-by: Le Ma <le.ma@amd.com>
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/include/discovery.h

@@ -79,7 +79,14 @@ typedef struct ip_discovery_header
 	uint32_t id;           /* Table ID */
 	uint16_t num_dies;     /* Number of Dies */
 	die_info die_info[16]; /* list die information for up to 16 dies */
-	uint16_t padding[1];   /* padding */
+	union {
+		uint16_t padding[1];	/* version <= 3 */
+		struct {		/* version == 4 */
+			uint8_t base_addr_64_bit : 1; /* ip structures are using 64 bit base address */
+			uint8_t reserved : 7;
+			uint8_t reserved2;
+		};
+	};
 } ip_discovery_header;
 
 typedef struct ip
@@ -118,6 +125,26 @@ typedef struct ip_v3
 	uint32_t base_address[1];               /* Base Address list. Corresponds to the num_base_address field*/
 } ip_v3;
 
+typedef struct ip_v4 {
+	uint16_t hw_id;                         /* Hardware ID */
+	uint8_t instance_number;                /* Instance number for the IP */
+	uint8_t num_base_address;               /* Number of base addresses*/
+	uint8_t major;                          /* Hardware ID.major version */
+	uint8_t minor;                          /* Hardware ID.minor version */
+	uint8_t revision;                       /* Hardware ID.revision version */
+#if defined(LITTLEENDIAN_CPU)
+	uint8_t sub_revision : 4;               /* HCID Sub-Revision */
+	uint8_t variant : 4;                    /* HW variant */
+#elif defined(BIGENDIAN_CPU)
+	uint8_t variant : 4;                    /* HW variant */
+	uint8_t sub_revision : 4;               /* HCID Sub-Revision */
+#endif
+	union {
+		uint32_t base_address[0];               /* 32-bit Base Address list. Corresponds to the num_base_address field*/
+		uint64_t base_address_64[0];            /* 64-bit Base Address list. Corresponds to the num_base_address field*/
+	} __packed;
+} ip_v4;
+
 typedef struct die_header
 {
 	uint16_t die_id;
@@ -134,6 +161,7 @@ typedef struct ip_structure
 		{
 			ip *ip_list;
 			ip_v3 *ip_v3_list;
+			ip_v4 *ip_v4_list;
 		};                                  /* IP list. Variable size*/
 	} die;
 } ip_structure;