3 * Intel Management Engine Interface (Intel MEI) Linux driver
4 * Copyright (c) 2003-2012, Intel Corporation.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 #ifndef _MEI_HW_TYPES_H_
18 #define _MEI_HW_TYPES_H_
20 #include <linux/uuid.h>
25 #define MEI_HW_READY_TIMEOUT 2 /* Timeout on ready message */
26 #define MEI_CONNECT_TIMEOUT 3 /* HPS: at least 2 seconds */
28 #define MEI_CL_CONNECT_TIMEOUT 15 /* HPS: Client Connect Timeout */
29 #define MEI_CLIENTS_INIT_TIMEOUT 15 /* HPS: Clients Enumeration Timeout */
31 #define MEI_IAMTHIF_STALL_TIMER 12 /* HPS */
32 #define MEI_IAMTHIF_READ_TIMER 10 /* HPS */
34 #define MEI_HBM_TIMEOUT 1 /* 1 second */
39 #define HBM_MINOR_VERSION 0
40 #define HBM_MAJOR_VERSION 1
42 /* Host bus message command opcode */
43 #define MEI_HBM_CMD_OP_MSK 0x7f
44 /* Host bus message command RESPONSE */
45 #define MEI_HBM_CMD_RES_MSK 0x80
48 * MEI Bus Message Command IDs
50 #define HOST_START_REQ_CMD 0x01
51 #define HOST_START_RES_CMD 0x81
53 #define HOST_STOP_REQ_CMD 0x02
54 #define HOST_STOP_RES_CMD 0x82
56 #define ME_STOP_REQ_CMD 0x03
58 #define HOST_ENUM_REQ_CMD 0x04
59 #define HOST_ENUM_RES_CMD 0x84
61 #define HOST_CLIENT_PROPERTIES_REQ_CMD 0x05
62 #define HOST_CLIENT_PROPERTIES_RES_CMD 0x85
64 #define CLIENT_CONNECT_REQ_CMD 0x06
65 #define CLIENT_CONNECT_RES_CMD 0x86
67 #define CLIENT_DISCONNECT_REQ_CMD 0x07
68 #define CLIENT_DISCONNECT_RES_CMD 0x87
70 #define MEI_FLOW_CONTROL_CMD 0x08
72 #define MEI_PG_ISOLATION_ENTRY_REQ_CMD 0x0a
73 #define MEI_PG_ISOLATION_ENTRY_RES_CMD 0x8a
74 #define MEI_PG_ISOLATION_EXIT_REQ_CMD 0x0b
75 #define MEI_PG_ISOLATION_EXIT_RES_CMD 0x8b
79 * used by hbm_host_stop_request.reason
81 enum mei_stop_reason_types {
82 DRIVER_STOP_REQUEST = 0x00,
83 DEVICE_D1_ENTRY = 0x01,
84 DEVICE_D2_ENTRY = 0x02,
85 DEVICE_D3_ENTRY = 0x03,
86 SYSTEM_S1_ENTRY = 0x04,
87 SYSTEM_S2_ENTRY = 0x05,
88 SYSTEM_S3_ENTRY = 0x06,
89 SYSTEM_S4_ENTRY = 0x07,
90 SYSTEM_S5_ENTRY = 0x08
94 * Client Connect Status
95 * used by hbm_client_connect_response.status
97 enum mei_cl_connect_status {
98 MEI_CL_CONN_SUCCESS = 0x00,
99 MEI_CL_CONN_NOT_FOUND = 0x01,
100 MEI_CL_CONN_ALREADY_STARTED = 0x02,
101 MEI_CL_CONN_OUT_OF_RESOURCES = 0x03,
102 MEI_CL_CONN_MESSAGE_SMALL = 0x04
106 * Client Disconnect Status
108 enum mei_cl_disconnect_status {
109 MEI_CL_DISCONN_SUCCESS = 0x00
113 * MEI BUS Interface Section
125 struct mei_bus_message {
131 * struct hbm_cl_cmd - client specific host bus command
132 * CONNECT, DISCONNECT, and FlOW CONTROL
134 * @hbm_cmd - bus message command header
135 * @me_addr - address of the client in ME
136 * @host_addr - address of the client in the driver
139 struct mei_hbm_cl_cmd {
151 struct hbm_host_version_request {
154 struct hbm_version host_version;
157 struct hbm_host_version_response {
159 u8 host_version_supported;
160 struct hbm_version me_max_version;
163 struct hbm_host_stop_request {
169 struct hbm_host_stop_response {
174 struct hbm_me_stop_request {
180 struct hbm_host_enum_request {
185 struct hbm_host_enum_response {
188 u8 valid_addresses[32];
191 struct mei_client_properties {
192 uuid_le protocol_name;
194 u8 max_number_of_connections;
200 struct hbm_props_request {
207 struct hbm_props_response {
212 struct mei_client_properties client_properties;
216 * struct hbm_power_gate - power gate request/response
218 * @hbm_cmd - bus message command header
221 struct hbm_power_gate {
227 * struct hbm_client_connect_request - connect/disconnect request
229 * @hbm_cmd - bus message command header
230 * @me_addr - address of the client in ME
231 * @host_addr - address of the client in the driver
234 struct hbm_client_connect_request {
242 * struct hbm_client_connect_response - connect/disconnect response
244 * @hbm_cmd - bus message command header
245 * @me_addr - address of the client in ME
246 * @host_addr - address of the client in the driver
247 * @status - status of the request
249 struct hbm_client_connect_response {
257 #define MEI_FC_MESSAGE_RESERVED_LENGTH 5
259 struct hbm_flow_control {
263 u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];