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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright (c) 2003-2022, Intel Corporation. All rights reserved
- * Intel Management Engine Interface (Intel MEI) Linux driver
- */
- #ifndef _MEI_HW_TYPES_H_
- #define _MEI_HW_TYPES_H_
- #include <linux/uuid.h>
- /*
- * Timeouts in Seconds
- */
- #define MEI_HW_READY_TIMEOUT 2 /* Timeout on ready message */
- #define MEI_CONNECT_TIMEOUT 3 /* HPS: at least 2 seconds */
- #define MEI_CL_CONNECT_TIMEOUT 15 /* HPS: Client Connect Timeout */
- #define MEI_CL_CONNECT_TIMEOUT_SLOW 30 /* HPS: Client Connect Timeout, slow FW */
- #define MEI_CLIENTS_INIT_TIMEOUT 15 /* HPS: Clients Enumeration Timeout */
- #define MEI_PGI_TIMEOUT 1 /* PG Isolation time response 1 sec */
- #define MEI_D0I3_TIMEOUT 5 /* D0i3 set/unset max response time */
- #define MEI_HBM_TIMEOUT 1 /* 1 second */
- #define MEI_HBM_TIMEOUT_SLOW 5 /* 5 second, slow FW */
- #define MKHI_RCV_TIMEOUT 500 /* receive timeout in msec */
- #define MKHI_RCV_TIMEOUT_SLOW 10000 /* receive timeout in msec, slow FW */
- /*
- * FW page size for DMA allocations
- */
- #define MEI_FW_PAGE_SIZE 4096UL
- /*
- * MEI Version
- */
- #define HBM_MINOR_VERSION 2
- #define HBM_MAJOR_VERSION 2
- /*
- * MEI version with PGI support
- */
- #define HBM_MINOR_VERSION_PGI 1
- #define HBM_MAJOR_VERSION_PGI 1
- /*
- * MEI version with Dynamic clients support
- */
- #define HBM_MINOR_VERSION_DC 0
- #define HBM_MAJOR_VERSION_DC 2
- /*
- * MEI version with immediate reply to enum request support
- */
- #define HBM_MINOR_VERSION_IE 0
- #define HBM_MAJOR_VERSION_IE 2
- /*
- * MEI version with disconnect on connection timeout support
- */
- #define HBM_MINOR_VERSION_DOT 0
- #define HBM_MAJOR_VERSION_DOT 2
- /*
- * MEI version with notification support
- */
- #define HBM_MINOR_VERSION_EV 0
- #define HBM_MAJOR_VERSION_EV 2
- /*
- * MEI version with fixed address client support
- */
- #define HBM_MINOR_VERSION_FA 0
- #define HBM_MAJOR_VERSION_FA 2
- /*
- * MEI version with OS ver message support
- */
- #define HBM_MINOR_VERSION_OS 0
- #define HBM_MAJOR_VERSION_OS 2
- /*
- * MEI version with dma ring support
- */
- #define HBM_MINOR_VERSION_DR 1
- #define HBM_MAJOR_VERSION_DR 2
- /*
- * MEI version with vm tag support
- */
- #define HBM_MINOR_VERSION_VT 2
- #define HBM_MAJOR_VERSION_VT 2
- /*
- * MEI version with capabilities message support
- */
- #define HBM_MINOR_VERSION_CAP 2
- #define HBM_MAJOR_VERSION_CAP 2
- /*
- * MEI version with client DMA support
- */
- #define HBM_MINOR_VERSION_CD 2
- #define HBM_MAJOR_VERSION_CD 2
- /* Host bus message command opcode */
- #define MEI_HBM_CMD_OP_MSK 0x7f
- /* Host bus message command RESPONSE */
- #define MEI_HBM_CMD_RES_MSK 0x80
- /*
- * MEI Bus Message Command IDs
- */
- #define HOST_START_REQ_CMD 0x01
- #define HOST_START_RES_CMD 0x81
- #define HOST_STOP_REQ_CMD 0x02
- #define HOST_STOP_RES_CMD 0x82
- #define ME_STOP_REQ_CMD 0x03
- #define HOST_ENUM_REQ_CMD 0x04
- #define HOST_ENUM_RES_CMD 0x84
- #define HOST_CLIENT_PROPERTIES_REQ_CMD 0x05
- #define HOST_CLIENT_PROPERTIES_RES_CMD 0x85
- #define CLIENT_CONNECT_REQ_CMD 0x06
- #define CLIENT_CONNECT_RES_CMD 0x86
- #define CLIENT_DISCONNECT_REQ_CMD 0x07
- #define CLIENT_DISCONNECT_RES_CMD 0x87
- #define MEI_FLOW_CONTROL_CMD 0x08
- #define MEI_PG_ISOLATION_ENTRY_REQ_CMD 0x0a
- #define MEI_PG_ISOLATION_ENTRY_RES_CMD 0x8a
- #define MEI_PG_ISOLATION_EXIT_REQ_CMD 0x0b
- #define MEI_PG_ISOLATION_EXIT_RES_CMD 0x8b
- #define MEI_HBM_ADD_CLIENT_REQ_CMD 0x0f
- #define MEI_HBM_ADD_CLIENT_RES_CMD 0x8f
- #define MEI_HBM_NOTIFY_REQ_CMD 0x10
- #define MEI_HBM_NOTIFY_RES_CMD 0x90
- #define MEI_HBM_NOTIFICATION_CMD 0x11
- #define MEI_HBM_DMA_SETUP_REQ_CMD 0x12
- #define MEI_HBM_DMA_SETUP_RES_CMD 0x92
- #define MEI_HBM_CAPABILITIES_REQ_CMD 0x13
- #define MEI_HBM_CAPABILITIES_RES_CMD 0x93
- #define MEI_HBM_CLIENT_DMA_MAP_REQ_CMD 0x14
- #define MEI_HBM_CLIENT_DMA_MAP_RES_CMD 0x94
- #define MEI_HBM_CLIENT_DMA_UNMAP_REQ_CMD 0x15
- #define MEI_HBM_CLIENT_DMA_UNMAP_RES_CMD 0x95
- /*
- * MEI Stop Reason
- * used by hbm_host_stop_request.reason
- */
- enum mei_stop_reason_types {
- DRIVER_STOP_REQUEST = 0x00,
- DEVICE_D1_ENTRY = 0x01,
- DEVICE_D2_ENTRY = 0x02,
- DEVICE_D3_ENTRY = 0x03,
- SYSTEM_S1_ENTRY = 0x04,
- SYSTEM_S2_ENTRY = 0x05,
- SYSTEM_S3_ENTRY = 0x06,
- SYSTEM_S4_ENTRY = 0x07,
- SYSTEM_S5_ENTRY = 0x08
- };
- /**
- * enum mei_hbm_status - mei host bus messages return values
- *
- * @MEI_HBMS_SUCCESS : status success
- * @MEI_HBMS_CLIENT_NOT_FOUND : client not found
- * @MEI_HBMS_ALREADY_EXISTS : connection already established
- * @MEI_HBMS_REJECTED : connection is rejected
- * @MEI_HBMS_INVALID_PARAMETER : invalid parameter
- * @MEI_HBMS_NOT_ALLOWED : operation not allowed
- * @MEI_HBMS_ALREADY_STARTED : system is already started
- * @MEI_HBMS_NOT_STARTED : system not started
- *
- * @MEI_HBMS_MAX : sentinel
- */
- enum mei_hbm_status {
- MEI_HBMS_SUCCESS = 0,
- MEI_HBMS_CLIENT_NOT_FOUND = 1,
- MEI_HBMS_ALREADY_EXISTS = 2,
- MEI_HBMS_REJECTED = 3,
- MEI_HBMS_INVALID_PARAMETER = 4,
- MEI_HBMS_NOT_ALLOWED = 5,
- MEI_HBMS_ALREADY_STARTED = 6,
- MEI_HBMS_NOT_STARTED = 7,
- MEI_HBMS_MAX
- };
- /*
- * Client Connect Status
- * used by hbm_client_connect_response.status
- */
- enum mei_cl_connect_status {
- MEI_CL_CONN_SUCCESS = MEI_HBMS_SUCCESS,
- MEI_CL_CONN_NOT_FOUND = MEI_HBMS_CLIENT_NOT_FOUND,
- MEI_CL_CONN_ALREADY_STARTED = MEI_HBMS_ALREADY_EXISTS,
- MEI_CL_CONN_OUT_OF_RESOURCES = MEI_HBMS_REJECTED,
- MEI_CL_CONN_MESSAGE_SMALL = MEI_HBMS_INVALID_PARAMETER,
- MEI_CL_CONN_NOT_ALLOWED = MEI_HBMS_NOT_ALLOWED,
- };
- /*
- * Client Disconnect Status
- */
- enum mei_cl_disconnect_status {
- MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS
- };
- /**
- * enum mei_ext_hdr_type - extended header type used in
- * extended header TLV
- *
- * @MEI_EXT_HDR_NONE: sentinel
- * @MEI_EXT_HDR_VTAG: vtag header
- */
- enum mei_ext_hdr_type {
- MEI_EXT_HDR_NONE = 0,
- MEI_EXT_HDR_VTAG = 1,
- };
- /**
- * struct mei_ext_hdr - extend header descriptor (TLV)
- * @type: enum mei_ext_hdr_type
- * @length: length excluding descriptor
- * @ext_payload: payload of the specific extended header
- * @hdr: place holder for actual header
- */
- struct mei_ext_hdr {
- u8 type;
- u8 length;
- u8 data[];
- } __packed;
- /**
- * struct mei_ext_meta_hdr - extend header meta data
- * @count: number of headers
- * @size: total size of the extended header list excluding meta header
- * @reserved: reserved
- * @hdrs: extended headers TLV list
- */
- struct mei_ext_meta_hdr {
- u8 count;
- u8 size;
- u8 reserved[2];
- u8 hdrs[];
- } __packed;
- /**
- * struct mei_ext_hdr_vtag - extend header for vtag
- *
- * @hdr: standard extend header
- * @vtag: virtual tag
- * @reserved: reserved
- */
- struct mei_ext_hdr_vtag {
- struct mei_ext_hdr hdr;
- u8 vtag;
- u8 reserved;
- } __packed;
- /*
- * Extended header iterator functions
- */
- /**
- * mei_ext_hdr - extended header iterator begin
- *
- * @meta: meta header of the extended header list
- *
- * Return:
- * The first extended header
- */
- static inline struct mei_ext_hdr *mei_ext_begin(struct mei_ext_meta_hdr *meta)
- {
- return (struct mei_ext_hdr *)meta->hdrs;
- }
- /**
- * mei_ext_last - check if the ext is the last one in the TLV list
- *
- * @meta: meta header of the extended header list
- * @ext: a meta header on the list
- *
- * Return: true if ext is the last header on the list
- */
- static inline bool mei_ext_last(struct mei_ext_meta_hdr *meta,
- struct mei_ext_hdr *ext)
- {
- return (u8 *)ext >= (u8 *)meta + sizeof(*meta) + (meta->size * 4);
- }
- /**
- * mei_ext_next - following extended header on the TLV list
- *
- * @ext: current extend header
- *
- * Context: The function does not check for the overflows,
- * one should call mei_ext_last before.
- *
- * Return: The following extend header after @ext
- */
- static inline struct mei_ext_hdr *mei_ext_next(struct mei_ext_hdr *ext)
- {
- return (struct mei_ext_hdr *)((u8 *)ext + (ext->length * 4));
- }
- /**
- * struct mei_msg_hdr - MEI BUS Interface Section
- *
- * @me_addr: device address
- * @host_addr: host address
- * @length: message length
- * @reserved: reserved
- * @extended: message has extended header
- * @dma_ring: message is on dma ring
- * @internal: message is internal
- * @msg_complete: last packet of the message
- * @extension: extension of the header
- */
- struct mei_msg_hdr {
- u32 me_addr:8;
- u32 host_addr:8;
- u32 length:9;
- u32 reserved:3;
- u32 extended:1;
- u32 dma_ring:1;
- u32 internal:1;
- u32 msg_complete:1;
- u32 extension[];
- } __packed;
- /* The length is up to 9 bits */
- #define MEI_MSG_MAX_LEN_MASK GENMASK(9, 0)
- struct mei_bus_message {
- u8 hbm_cmd;
- u8 data[];
- } __packed;
- /**
- * struct hbm_cl_cmd - client specific host bus command
- * CONNECT, DISCONNECT, and FlOW CONTROL
- *
- * @hbm_cmd: bus message command header
- * @me_addr: address of the client in ME
- * @host_addr: address of the client in the driver
- * @data: generic data
- */
- struct mei_hbm_cl_cmd {
- u8 hbm_cmd;
- u8 me_addr;
- u8 host_addr;
- u8 data;
- };
- struct hbm_version {
- u8 minor_version;
- u8 major_version;
- } __packed;
- struct hbm_host_version_request {
- u8 hbm_cmd;
- u8 reserved;
- struct hbm_version host_version;
- } __packed;
- struct hbm_host_version_response {
- u8 hbm_cmd;
- u8 host_version_supported;
- struct hbm_version me_max_version;
- } __packed;
- struct hbm_host_stop_request {
- u8 hbm_cmd;
- u8 reason;
- u8 reserved[2];
- } __packed;
- struct hbm_host_stop_response {
- u8 hbm_cmd;
- u8 reserved[3];
- } __packed;
- struct hbm_me_stop_request {
- u8 hbm_cmd;
- u8 reason;
- u8 reserved[2];
- } __packed;
- /**
- * enum hbm_host_enum_flags - enumeration request flags (HBM version >= 2.0)
- *
- * @MEI_HBM_ENUM_F_ALLOW_ADD: allow dynamic clients add
- * @MEI_HBM_ENUM_F_IMMEDIATE_ENUM: allow FW to send answer immediately
- */
- enum hbm_host_enum_flags {
- MEI_HBM_ENUM_F_ALLOW_ADD = BIT(0),
- MEI_HBM_ENUM_F_IMMEDIATE_ENUM = BIT(1),
- };
- /**
- * struct hbm_host_enum_request - enumeration request from host to fw
- *
- * @hbm_cmd : bus message command header
- * @flags : request flags
- * @reserved: reserved
- */
- struct hbm_host_enum_request {
- u8 hbm_cmd;
- u8 flags;
- u8 reserved[2];
- } __packed;
- struct hbm_host_enum_response {
- u8 hbm_cmd;
- u8 reserved[3];
- u8 valid_addresses[32];
- } __packed;
- /**
- * struct mei_client_properties - mei client properties
- *
- * @protocol_name: guid of the client
- * @protocol_version: client protocol version
- * @max_number_of_connections: number of possible connections.
- * @fixed_address: fixed me address (0 if the client is dynamic)
- * @single_recv_buf: 1 if all connections share a single receive buffer.
- * @vt_supported: the client support vtag
- * @reserved: reserved
- * @max_msg_length: MTU of the client
- */
- struct mei_client_properties {
- uuid_le protocol_name;
- u8 protocol_version;
- u8 max_number_of_connections;
- u8 fixed_address;
- u8 single_recv_buf:1;
- u8 vt_supported:1;
- u8 reserved:6;
- u32 max_msg_length;
- } __packed;
- struct hbm_props_request {
- u8 hbm_cmd;
- u8 me_addr;
- u8 reserved[2];
- } __packed;
- struct hbm_props_response {
- u8 hbm_cmd;
- u8 me_addr;
- u8 status;
- u8 reserved;
- struct mei_client_properties client_properties;
- } __packed;
- /**
- * struct hbm_add_client_request - request to add a client
- * might be sent by fw after enumeration has already completed
- *
- * @hbm_cmd: bus message command header
- * @me_addr: address of the client in ME
- * @reserved: reserved
- * @client_properties: client properties
- */
- struct hbm_add_client_request {
- u8 hbm_cmd;
- u8 me_addr;
- u8 reserved[2];
- struct mei_client_properties client_properties;
- } __packed;
- /**
- * struct hbm_add_client_response - response to add a client
- * sent by the host to report client addition status to fw
- *
- * @hbm_cmd: bus message command header
- * @me_addr: address of the client in ME
- * @status: if HBMS_SUCCESS then the client can now accept connections.
- * @reserved: reserved
- */
- struct hbm_add_client_response {
- u8 hbm_cmd;
- u8 me_addr;
- u8 status;
- u8 reserved;
- } __packed;
- /**
- * struct hbm_power_gate - power gate request/response
- *
- * @hbm_cmd: bus message command header
- * @reserved: reserved
- */
- struct hbm_power_gate {
- u8 hbm_cmd;
- u8 reserved[3];
- } __packed;
- /**
- * struct hbm_client_connect_request - connect/disconnect request
- *
- * @hbm_cmd: bus message command header
- * @me_addr: address of the client in ME
- * @host_addr: address of the client in the driver
- * @reserved: reserved
- */
- struct hbm_client_connect_request {
- u8 hbm_cmd;
- u8 me_addr;
- u8 host_addr;
- u8 reserved;
- } __packed;
- /**
- * struct hbm_client_connect_response - connect/disconnect response
- *
- * @hbm_cmd: bus message command header
- * @me_addr: address of the client in ME
- * @host_addr: address of the client in the driver
- * @status: status of the request
- */
- struct hbm_client_connect_response {
- u8 hbm_cmd;
- u8 me_addr;
- u8 host_addr;
- u8 status;
- } __packed;
- #define MEI_FC_MESSAGE_RESERVED_LENGTH 5
- struct hbm_flow_control {
- u8 hbm_cmd;
- u8 me_addr;
- u8 host_addr;
- u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
- } __packed;
- #define MEI_HBM_NOTIFICATION_START 1
- #define MEI_HBM_NOTIFICATION_STOP 0
- /**
- * struct hbm_notification_request - start/stop notification request
- *
- * @hbm_cmd: bus message command header
- * @me_addr: address of the client in ME
- * @host_addr: address of the client in the driver
- * @start: start = 1 or stop = 0 asynchronous notifications
- */
- struct hbm_notification_request {
- u8 hbm_cmd;
- u8 me_addr;
- u8 host_addr;
- u8 start;
- } __packed;
- /**
- * struct hbm_notification_response - start/stop notification response
- *
- * @hbm_cmd: bus message command header
- * @me_addr: address of the client in ME
- * @host_addr: - address of the client in the driver
- * @status: (mei_hbm_status) response status for the request
- * - MEI_HBMS_SUCCESS: successful stop/start
- * - MEI_HBMS_CLIENT_NOT_FOUND: if the connection could not be found.
- * - MEI_HBMS_ALREADY_STARTED: for start requests for a previously
- * started notification.
- * - MEI_HBMS_NOT_STARTED: for stop request for a connected client for whom
- * asynchronous notifications are currently disabled.
- *
- * @start: start = 1 or stop = 0 asynchronous notifications
- * @reserved: reserved
- */
- struct hbm_notification_response {
- u8 hbm_cmd;
- u8 me_addr;
- u8 host_addr;
- u8 status;
- u8 start;
- u8 reserved[3];
- } __packed;
- /**
- * struct hbm_notification - notification event
- *
- * @hbm_cmd: bus message command header
- * @me_addr: address of the client in ME
- * @host_addr: address of the client in the driver
- * @reserved: reserved for alignment
- */
- struct hbm_notification {
- u8 hbm_cmd;
- u8 me_addr;
- u8 host_addr;
- u8 reserved;
- } __packed;
- /**
- * struct hbm_dma_mem_dscr - dma ring
- *
- * @addr_hi: the high 32bits of 64 bit address
- * @addr_lo: the low 32bits of 64 bit address
- * @size : size in bytes (must be power of 2)
- */
- struct hbm_dma_mem_dscr {
- u32 addr_hi;
- u32 addr_lo;
- u32 size;
- } __packed;
- enum {
- DMA_DSCR_HOST = 0,
- DMA_DSCR_DEVICE = 1,
- DMA_DSCR_CTRL = 2,
- DMA_DSCR_NUM,
- };
- /**
- * struct hbm_dma_setup_request - dma setup request
- *
- * @hbm_cmd: bus message command header
- * @reserved: reserved for alignment
- * @dma_dscr: dma descriptor for HOST, DEVICE, and CTRL
- */
- struct hbm_dma_setup_request {
- u8 hbm_cmd;
- u8 reserved[3];
- struct hbm_dma_mem_dscr dma_dscr[DMA_DSCR_NUM];
- } __packed;
- /**
- * struct hbm_dma_setup_response - dma setup response
- *
- * @hbm_cmd: bus message command header
- * @status: 0 on success; otherwise DMA setup failed.
- * @reserved: reserved for alignment
- */
- struct hbm_dma_setup_response {
- u8 hbm_cmd;
- u8 status;
- u8 reserved[2];
- } __packed;
- /**
- * struct mei_dma_ring_ctrl - dma ring control block
- *
- * @hbuf_wr_idx: host circular buffer write index in slots
- * @reserved1: reserved for alignment
- * @hbuf_rd_idx: host circular buffer read index in slots
- * @reserved2: reserved for alignment
- * @dbuf_wr_idx: device circular buffer write index in slots
- * @reserved3: reserved for alignment
- * @dbuf_rd_idx: device circular buffer read index in slots
- * @reserved4: reserved for alignment
- */
- struct hbm_dma_ring_ctrl {
- u32 hbuf_wr_idx;
- u32 reserved1;
- u32 hbuf_rd_idx;
- u32 reserved2;
- u32 dbuf_wr_idx;
- u32 reserved3;
- u32 dbuf_rd_idx;
- u32 reserved4;
- } __packed;
- /* virtual tag supported */
- #define HBM_CAP_VT BIT(0)
- /* client dma supported */
- #define HBM_CAP_CD BIT(2)
- /**
- * struct hbm_capability_request - capability request from host to fw
- *
- * @hbm_cmd : bus message command header
- * @capability_requested: bitmask of capabilities requested by host
- */
- struct hbm_capability_request {
- u8 hbm_cmd;
- u8 capability_requested[3];
- } __packed;
- /**
- * struct hbm_capability_response - capability response from fw to host
- *
- * @hbm_cmd : bus message command header
- * @capability_granted: bitmask of capabilities granted by FW
- */
- struct hbm_capability_response {
- u8 hbm_cmd;
- u8 capability_granted[3];
- } __packed;
- /**
- * struct hbm_client_dma_map_request - client dma map request from host to fw
- *
- * @hbm_cmd: bus message command header
- * @client_buffer_id: client buffer id
- * @reserved: reserved
- * @address_lsb: DMA address LSB
- * @address_msb: DMA address MSB
- * @size: DMA size
- */
- struct hbm_client_dma_map_request {
- u8 hbm_cmd;
- u8 client_buffer_id;
- u8 reserved[2];
- u32 address_lsb;
- u32 address_msb;
- u32 size;
- } __packed;
- /**
- * struct hbm_client_dma_unmap_request
- * client dma unmap request from the host to the firmware
- *
- * @hbm_cmd: bus message command header
- * @status: unmap status
- * @client_buffer_id: client buffer id
- * @reserved: reserved
- */
- struct hbm_client_dma_unmap_request {
- u8 hbm_cmd;
- u8 status;
- u8 client_buffer_id;
- u8 reserved;
- } __packed;
- /**
- * struct hbm_client_dma_response
- * client dma unmap response from the firmware to the host
- *
- * @hbm_cmd: bus message command header
- * @status: command status
- */
- struct hbm_client_dma_response {
- u8 hbm_cmd;
- u8 status;
- } __packed;
- #endif
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