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

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/amdgpu/ta_xgmi_if.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/amdgpu/ta_xgmi_if.h
Extension
.h
Size
6004 bytes
Lines
178
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct ta_xgmi_node_info {
	uint64_t				node_id;
	uint8_t					num_hops;
	uint8_t					is_sharing_enabled;
	enum ta_xgmi_assigned_sdma_engine	sdma_engine;
};

struct ta_xgmi_peer_link_info {
	uint64_t				node_id;
	uint8_t					num_links;
};

struct xgmi_connected_port_num {
	uint8_t		dst_xgmi_port_num;
	uint8_t		src_xgmi_port_num;
};

/* support both the port num and num_links */
struct ta_xgmi_extend_peer_link_info {
	uint64_t				node_id;
	uint8_t					num_links;
	struct xgmi_connected_port_num		port_num[TA_XGMI__MAX_PORT_NUM];
};

struct ta_xgmi_cmd_initialize_output {
	uint32_t	status;
};

struct ta_xgmi_cmd_get_node_id_output {
	uint64_t	node_id;
};

struct ta_xgmi_cmd_get_hive_id_output {
	uint64_t	hive_id;
};

struct ta_xgmi_cmd_get_topology_info_input {
	uint32_t			num_nodes;
	struct ta_xgmi_node_info	nodes[TA_XGMI__MAX_CONNECTED_NODES];
};

struct ta_xgmi_cmd_get_topology_info_output {
	uint32_t			num_nodes;
	struct ta_xgmi_node_info	nodes[TA_XGMI__MAX_CONNECTED_NODES];
};

struct ta_xgmi_cmd_set_topology_info_input {
	uint32_t			num_nodes;
	struct ta_xgmi_node_info	nodes[TA_XGMI__MAX_CONNECTED_NODES];
};

/* support XGMI TA w/ and w/o port_num both so two similar structs defined */
struct ta_xgmi_cmd_get_peer_link_info {
	uint32_t			num_nodes;
	struct ta_xgmi_peer_link_info	nodes[TA_XGMI__MAX_CONNECTED_NODES];
};

struct ta_xgmi_cmd_get_extend_peer_link_info {
	uint32_t				num_nodes;
	struct ta_xgmi_extend_peer_link_info nodes[TA_XGMI__MAX_CONNECTED_NODES];
};
/**********************************************************/
/* Common input structure for XGMI callbacks */
union ta_xgmi_cmd_input {
	struct ta_xgmi_cmd_get_topology_info_input	get_topology_info;
	struct ta_xgmi_cmd_set_topology_info_input	set_topology_info;
};

/* Common output structure for XGMI callbacks */
union ta_xgmi_cmd_output {
	struct ta_xgmi_cmd_initialize_output		initialize;
	struct ta_xgmi_cmd_get_node_id_output		get_node_id;
	struct ta_xgmi_cmd_get_hive_id_output		get_hive_id;
	struct ta_xgmi_cmd_get_topology_info_output	get_topology_info;
	struct ta_xgmi_cmd_get_peer_link_info		get_link_info;
	struct ta_xgmi_cmd_get_extend_peer_link_info	get_extend_link_info;
};

struct ta_xgmi_shared_memory {
	uint32_t			cmd_id;
	uint32_t			resp_id;
	enum ta_xgmi_status		xgmi_status;

	/* if the number of xgmi link record is more than 128, driver will set the
	 * flag 0 to get the first 128 of the link records and will set to 1, to get
	 * the second set
	 */
	uint8_t				flag_extend_link_record;
	/* bit0: port_num info support flag for GET_EXTEND_PEER_LINKS commmand */
	uint8_t				caps_flag;

Annotation

Implementation Notes