drivers/misc/mei/hw.h

   1 /*
   2  *
   3  * Intel Management Engine Interface (Intel MEI) Linux driver
   4  * Copyright (c) 2003-2012, Intel Corporation.
   5  *
   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.
   9  *
  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
  13  * more details.
  14  *
  15  */
  16
  17 #ifndef _MEI_HW_TYPES_H_
  18 #define _MEI_HW_TYPES_H_
  19
  20 #include <linux/uuid.h>
  21
  22 /*
  23  * Timeouts in Seconds
  24  */
  25 #define MEI_HW_READY_TIMEOUT        2  /* Timeout on ready message */
  26 #define MEI_CONNECT_TIMEOUT         3  /* HPS: at least 2 seconds */
  27
  28 #define MEI_CL_CONNECT_TIMEOUT     15  /* HPS: Client Connect Timeout */
  29 #define MEI_CLIENTS_INIT_TIMEOUT   15  /* HPS: Clients Enumeration Timeout */
  30
  31 #define MEI_IAMTHIF_STALL_TIMER    12  /* HPS */
  32 #define MEI_IAMTHIF_READ_TIMER     10  /* HPS */
  33
  34 #define MEI_PGI_TIMEOUT            1  /* PG Isolation time response 1 sec */
  35 #define MEI_HBM_TIMEOUT            1   /* 1 second */
  36
  37 /*
  38  * MEI Version
  39  */
  40 #define HBM_MINOR_VERSION                   1
  41 #define HBM_MAJOR_VERSION                   1
  42
  43 /*
  44  * MEI version with PGI support
  45  */
  46 #define HBM_MINOR_VERSION_PGI               1
  47 #define HBM_MAJOR_VERSION_PGI               1
  48
  49 /* Host bus message command opcode */
  50 #define MEI_HBM_CMD_OP_MSK                  0x7f
  51 /* Host bus message command RESPONSE */
  52 #define MEI_HBM_CMD_RES_MSK                 0x80
  53
  54 /*
  55  * MEI Bus Message Command IDs
  56  */
  57 #define HOST_START_REQ_CMD                  0x01
  58 #define HOST_START_RES_CMD                  0x81
  59
  60 #define HOST_STOP_REQ_CMD                   0x02
  61 #define HOST_STOP_RES_CMD                   0x82
  62
  63 #define ME_STOP_REQ_CMD                     0x03
  64
  65 #define HOST_ENUM_REQ_CMD                   0x04
  66 #define HOST_ENUM_RES_CMD                   0x84
  67
  68 #define HOST_CLIENT_PROPERTIES_REQ_CMD      0x05
  69 #define HOST_CLIENT_PROPERTIES_RES_CMD      0x85
  70
  71 #define CLIENT_CONNECT_REQ_CMD              0x06
  72 #define CLIENT_CONNECT_RES_CMD              0x86
  73
  74 #define CLIENT_DISCONNECT_REQ_CMD           0x07
  75 #define CLIENT_DISCONNECT_RES_CMD           0x87
  76
  77 #define MEI_FLOW_CONTROL_CMD                0x08
  78
  79 #define MEI_PG_ISOLATION_ENTRY_REQ_CMD      0x0a
  80 #define MEI_PG_ISOLATION_ENTRY_RES_CMD      0x8a
  81 #define MEI_PG_ISOLATION_EXIT_REQ_CMD       0x0b
  82 #define MEI_PG_ISOLATION_EXIT_RES_CMD       0x8b
  83
  84 /*
  85  * MEI Stop Reason
  86  * used by hbm_host_stop_request.reason
  87  */
  88 enum mei_stop_reason_types {
  89         DRIVER_STOP_REQUEST = 0x00,
  90         DEVICE_D1_ENTRY = 0x01,
  91         DEVICE_D2_ENTRY = 0x02,
  92         DEVICE_D3_ENTRY = 0x03,
  93         SYSTEM_S1_ENTRY = 0x04,
  94         SYSTEM_S2_ENTRY = 0x05,
  95         SYSTEM_S3_ENTRY = 0x06,
  96         SYSTEM_S4_ENTRY = 0x07,
  97         SYSTEM_S5_ENTRY = 0x08
  98 };
  99
 100 /*
 101  * Client Connect Status
 102  * used by hbm_client_connect_response.status
 103  */
 104 enum mei_cl_connect_status {
 105         MEI_CL_CONN_SUCCESS          = 0x00,
 106         MEI_CL_CONN_NOT_FOUND        = 0x01,
 107         MEI_CL_CONN_ALREADY_STARTED  = 0x02,
 108         MEI_CL_CONN_OUT_OF_RESOURCES = 0x03,
 109         MEI_CL_CONN_MESSAGE_SMALL    = 0x04
 110 };
 111
 112 /*
 113  * Client Disconnect Status
 114  */
 115 enum  mei_cl_disconnect_status {
 116         MEI_CL_DISCONN_SUCCESS = 0x00
 117 };
 118
 119 /*
 120  *  MEI BUS Interface Section
 121  */
 122 struct mei_msg_hdr {
 123         u32 me_addr:8;
 124         u32 host_addr:8;
 125         u32 length:9;
 126         u32 reserved:5;
 127         u32 internal:1;
 128         u32 msg_complete:1;
 129 } __packed;
 130
 131
 132 struct mei_bus_message {
 133         u8 hbm_cmd;
 134         u8 data[0];
 135 } __packed;
 136
 137 /**
 138  * struct hbm_cl_cmd - client specific host bus command
 139  *      CONNECT, DISCONNECT, and FlOW CONTROL
 140  *
 141  * @hbm_cmd - bus message command header
 142  * @me_addr - address of the client in ME
 143  * @host_addr - address of the client in the driver
 144  * @data
 145  */
 146 struct mei_hbm_cl_cmd {
 147         u8 hbm_cmd;
 148         u8 me_addr;
 149         u8 host_addr;
 150         u8 data;
 151 };
 152
 153 struct hbm_version {
 154         u8 minor_version;
 155         u8 major_version;
 156 } __packed;
 157
 158 struct hbm_host_version_request {
 159         u8 hbm_cmd;
 160         u8 reserved;
 161         struct hbm_version host_version;
 162 } __packed;
 163
 164 struct hbm_host_version_response {
 165         u8 hbm_cmd;
 166         u8 host_version_supported;
 167         struct hbm_version me_max_version;
 168 } __packed;
 169
 170 struct hbm_host_stop_request {
 171         u8 hbm_cmd;
 172         u8 reason;
 173         u8 reserved[2];
 174 } __packed;
 175
 176 struct hbm_host_stop_response {
 177         u8 hbm_cmd;
 178         u8 reserved[3];
 179 } __packed;
 180
 181 struct hbm_me_stop_request {
 182         u8 hbm_cmd;
 183         u8 reason;
 184         u8 reserved[2];
 185 } __packed;
 186
 187 struct hbm_host_enum_request {
 188         u8 hbm_cmd;
 189         u8 reserved[3];
 190 } __packed;
 191
 192 struct hbm_host_enum_response {
 193         u8 hbm_cmd;
 194         u8 reserved[3];
 195         u8 valid_addresses[32];
 196 } __packed;
 197
 198 struct mei_client_properties {
 199         uuid_le protocol_name;
 200         u8 protocol_version;
 201         u8 max_number_of_connections;
 202         u8 fixed_address;
 203         u8 single_recv_buf;
 204         u32 max_msg_length;
 205 } __packed;
 206
 207 struct hbm_props_request {
 208         u8 hbm_cmd;
 209         u8 address;
 210         u8 reserved[2];
 211 } __packed;
 212
 213
 214 struct hbm_props_response {
 215         u8 hbm_cmd;
 216         u8 address;
 217         u8 status;
 218         u8 reserved[1];
 219         struct mei_client_properties client_properties;
 220 } __packed;
 221
 222 /**
 223  * struct hbm_power_gate - power gate request/response
 224  *
 225  * @hbm_cmd - bus message command header
 226  * @reserved[3]
 227  */
 228 struct hbm_power_gate {
 229         u8 hbm_cmd;
 230         u8 reserved[3];
 231 } __packed;
 232
 233 /**
 234  * struct hbm_client_connect_request - connect/disconnect request
 235  *
 236  * @hbm_cmd - bus message command header
 237  * @me_addr - address of the client in ME
 238  * @host_addr - address of the client in the driver
 239  * @reserved
 240  */
 241 struct hbm_client_connect_request {
 242         u8 hbm_cmd;
 243         u8 me_addr;
 244         u8 host_addr;
 245         u8 reserved;
 246 } __packed;
 247
 248 /**
 249  * struct hbm_client_connect_response - connect/disconnect response
 250  *
 251  * @hbm_cmd - bus message command header
 252  * @me_addr - address of the client in ME
 253  * @host_addr - address of the client in the driver
 254  * @status - status of the request
 255  */
 256 struct hbm_client_connect_response {
 257         u8 hbm_cmd;
 258         u8 me_addr;
 259         u8 host_addr;
 260         u8 status;
 261 } __packed;
 262
 263
 264 #define MEI_FC_MESSAGE_RESERVED_LENGTH           5
 265
 266 struct hbm_flow_control {
 267         u8 hbm_cmd;
 268         u8 me_addr;
 269         u8 host_addr;
 270         u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
 271 } __packed;
 272
 273
 274 #endif