drm/amdgpu : Add psp function interfaces for XGMI support

Place holder for XGMI support
Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Reviewed-by: Huang Rui <ray.huang@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_psp.h

@@ -35,6 +35,7 @@
 #define PSP_TMR_SIZE	0x400000
 
 struct psp_context;
+struct psp_xgmi_topology_info;
 
 enum psp_ring_type
 {
@@ -79,6 +80,12 @@ struct psp_funcs
 				  enum AMDGPU_UCODE_ID ucode_type);
 	bool (*smu_reload_quirk)(struct psp_context *psp);
 	int (*mode1_reset)(struct psp_context *psp);
+	uint64_t (*xgmi_get_device_id)(struct psp_context *psp);
+	uint64_t (*xgmi_get_hive_id)(struct psp_context *psp);
+	int (*xgmi_get_topology_info)(struct psp_context *psp, int number_devices,
+			struct psp_xgmi_topology_info *topology);
+	int (*xgmi_set_topology_info)(struct psp_context *psp, int number_devices,
+			struct psp_xgmi_topology_info *topology);
 };
 
 struct psp_context
@@ -134,6 +141,23 @@ struct amdgpu_psp_funcs {
 					enum AMDGPU_UCODE_ID);
 };
 
+struct psp_xgmi_topology_info {
+	/* Generated by PSP to identify the GPU instance within xgmi connection */
+	uint64_t			device_id;
+	/*
+	 * If all bits set to 0 , driver indicates it wants to retrieve the xgmi
+	 * connection vector topology, but not access enable the connections
+	 * if some or all bits are set to 1, driver indicates it want to retrieve the
+	 * current xgmi topology and  access enable the link to GPU[i] associated
+	 * with the bit position in the  vector.
+	 * On return,: bits indicated which xgmi links are present/active depending
+	 * on the  value passed in. The relative bit offset for the  relative GPU index
+	 * within the  hive is always marked active.
+	 */
+	uint32_t			connection_mask;
+	uint32_t			reserved; /* must be  0 */
+};
+
 #define psp_prep_cmd_buf(ucode, type) (psp)->funcs->prep_cmd_buf((ucode), (type))
 #define psp_ring_init(psp, type) (psp)->funcs->ring_init((psp), (type))
 #define psp_ring_create(psp, type) (psp)->funcs->ring_create((psp), (type))
@@ -153,6 +177,16 @@ struct amdgpu_psp_funcs {
 		((psp)->funcs->smu_reload_quirk ? (psp)->funcs->smu_reload_quirk((psp)) : false)
 #define psp_mode1_reset(psp) \
 		((psp)->funcs->mode1_reset ? (psp)->funcs->mode1_reset((psp)) : false)
+#define psp_xgmi_get_device_id(psp) \
+		((psp)->funcs->xgmi_get_device_id ? (psp)->funcs->xgmi_get_device_id((psp)) : 0)
+#define psp_xgmi_get_hive_id(psp) \
+		((psp)->funcs->xgmi_get_hive_id ? (psp)->funcs->xgmi_get_hive_id((psp)) : 0)
+#define psp_xgmi_get_topology_info(psp, num_device, topology) \
+		((psp)->funcs->xgmi_get_topology_info ? \
+		(psp)->funcs->xgmi_get_topology_info((psp), (num_device), (topology)) : -EINVAL)
+#define psp_xgmi_set_topology_info(psp, num_device, topology) \
+		((psp)->funcs->xgmi_set_topology_info ?	 \
+		(psp)->funcs->xgmi_set_topology_info((psp), (num_device), (topology)) : -EINVAL)
 
 #define amdgpu_psp_check_fw_loading_status(adev, i) (adev)->firmware.funcs->check_fw_loading_status((adev), (i))