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285e299665
1. Return -ENOTTY on client connect if the requested client was not found on the enumeration list or the client was internally disabled, in the later case FW will return NOT_FOUND. 2. Return -EBUSY if the client cannot be connected because of resource contention 3. Change response status enum to have MEI_CL_ prefix 4. Add function to translate response status to a string for more readable logging Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
252 lines
5.3 KiB
C
252 lines
5.3 KiB
C
/*
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*
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* Intel Management Engine Interface (Intel MEI) Linux driver
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* Copyright (c) 2003-2012, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#ifndef _MEI_HW_TYPES_H_
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#define _MEI_HW_TYPES_H_
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#include <linux/uuid.h>
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/*
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* Timeouts in Seconds
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*/
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#define MEI_HW_READY_TIMEOUT 2 /* Timeout on ready message */
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#define MEI_CONNECT_TIMEOUT 3 /* HPS: at least 2 seconds */
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#define MEI_CL_CONNECT_TIMEOUT 15 /* HPS: Client Connect Timeout */
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#define MEI_CLIENTS_INIT_TIMEOUT 15 /* HPS: Clients Enumeration Timeout */
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#define MEI_IAMTHIF_STALL_TIMER 12 /* HPS */
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#define MEI_IAMTHIF_READ_TIMER 10 /* HPS */
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#define MEI_HBM_TIMEOUT 1 /* 1 second */
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/*
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* MEI Version
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*/
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#define HBM_MINOR_VERSION 0
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#define HBM_MAJOR_VERSION 1
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/* Host bus message command opcode */
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#define MEI_HBM_CMD_OP_MSK 0x7f
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/* Host bus message command RESPONSE */
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#define MEI_HBM_CMD_RES_MSK 0x80
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/*
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* MEI Bus Message Command IDs
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*/
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#define HOST_START_REQ_CMD 0x01
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#define HOST_START_RES_CMD 0x81
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#define HOST_STOP_REQ_CMD 0x02
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#define HOST_STOP_RES_CMD 0x82
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#define ME_STOP_REQ_CMD 0x03
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#define HOST_ENUM_REQ_CMD 0x04
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#define HOST_ENUM_RES_CMD 0x84
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#define HOST_CLIENT_PROPERTIES_REQ_CMD 0x05
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#define HOST_CLIENT_PROPERTIES_RES_CMD 0x85
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#define CLIENT_CONNECT_REQ_CMD 0x06
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#define CLIENT_CONNECT_RES_CMD 0x86
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#define CLIENT_DISCONNECT_REQ_CMD 0x07
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#define CLIENT_DISCONNECT_RES_CMD 0x87
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#define MEI_FLOW_CONTROL_CMD 0x08
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/*
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* MEI Stop Reason
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* used by hbm_host_stop_request.reason
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*/
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enum mei_stop_reason_types {
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DRIVER_STOP_REQUEST = 0x00,
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DEVICE_D1_ENTRY = 0x01,
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DEVICE_D2_ENTRY = 0x02,
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DEVICE_D3_ENTRY = 0x03,
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SYSTEM_S1_ENTRY = 0x04,
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SYSTEM_S2_ENTRY = 0x05,
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SYSTEM_S3_ENTRY = 0x06,
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SYSTEM_S4_ENTRY = 0x07,
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SYSTEM_S5_ENTRY = 0x08
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};
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/*
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* Client Connect Status
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* used by hbm_client_connect_response.status
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*/
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enum mei_cl_connect_status {
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MEI_CL_CONN_SUCCESS = 0x00,
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MEI_CL_CONN_NOT_FOUND = 0x01,
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MEI_CL_CONN_ALREADY_STARTED = 0x02,
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MEI_CL_CONN_OUT_OF_RESOURCES = 0x03,
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MEI_CL_CONN_MESSAGE_SMALL = 0x04
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};
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/*
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* Client Disconnect Status
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*/
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enum mei_cl_disconnect_status {
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MEI_CL_DISCONN_SUCCESS = 0x00
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};
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/*
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* MEI BUS Interface Section
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*/
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struct mei_msg_hdr {
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u32 me_addr:8;
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u32 host_addr:8;
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u32 length:9;
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u32 reserved:5;
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u32 internal:1;
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u32 msg_complete:1;
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} __packed;
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struct mei_bus_message {
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u8 hbm_cmd;
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u8 data[0];
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} __packed;
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/**
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* struct hbm_cl_cmd - client specific host bus command
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* CONNECT, DISCONNECT, and FlOW CONTROL
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*
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* @hbm_cmd - bus message command header
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* @me_addr - address of the client in ME
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* @host_addr - address of the client in the driver
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* @data
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*/
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struct mei_hbm_cl_cmd {
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u8 hbm_cmd;
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u8 me_addr;
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u8 host_addr;
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u8 data;
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};
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struct hbm_version {
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u8 minor_version;
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u8 major_version;
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} __packed;
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struct hbm_host_version_request {
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u8 hbm_cmd;
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u8 reserved;
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struct hbm_version host_version;
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} __packed;
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struct hbm_host_version_response {
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u8 hbm_cmd;
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u8 host_version_supported;
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struct hbm_version me_max_version;
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} __packed;
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struct hbm_host_stop_request {
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u8 hbm_cmd;
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u8 reason;
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u8 reserved[2];
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} __packed;
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struct hbm_host_stop_response {
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u8 hbm_cmd;
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u8 reserved[3];
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} __packed;
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struct hbm_me_stop_request {
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u8 hbm_cmd;
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u8 reason;
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u8 reserved[2];
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} __packed;
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struct hbm_host_enum_request {
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u8 hbm_cmd;
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u8 reserved[3];
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} __packed;
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struct hbm_host_enum_response {
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u8 hbm_cmd;
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u8 reserved[3];
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u8 valid_addresses[32];
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} __packed;
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struct mei_client_properties {
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uuid_le protocol_name;
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u8 protocol_version;
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u8 max_number_of_connections;
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u8 fixed_address;
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u8 single_recv_buf;
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u32 max_msg_length;
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} __packed;
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struct hbm_props_request {
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u8 hbm_cmd;
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u8 address;
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u8 reserved[2];
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} __packed;
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struct hbm_props_response {
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u8 hbm_cmd;
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u8 address;
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u8 status;
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u8 reserved[1];
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struct mei_client_properties client_properties;
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} __packed;
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/**
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* struct hbm_client_connect_request - connect/disconnect request
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*
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* @hbm_cmd - bus message command header
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* @me_addr - address of the client in ME
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* @host_addr - address of the client in the driver
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* @reserved
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*/
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struct hbm_client_connect_request {
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u8 hbm_cmd;
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u8 me_addr;
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u8 host_addr;
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u8 reserved;
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} __packed;
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/**
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* struct hbm_client_connect_response - connect/disconnect response
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*
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* @hbm_cmd - bus message command header
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* @me_addr - address of the client in ME
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* @host_addr - address of the client in the driver
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* @status - status of the request
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*/
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struct hbm_client_connect_response {
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u8 hbm_cmd;
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u8 me_addr;
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u8 host_addr;
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u8 status;
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} __packed;
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#define MEI_FC_MESSAGE_RESERVED_LENGTH 5
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struct hbm_flow_control {
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u8 hbm_cmd;
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u8 me_addr;
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u8 host_addr;
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u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
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} __packed;
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#endif
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