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
  33 #define MEI_PGI_TIMEOUT             1  /* PG Isolation time response 1 sec */
  34 #define MEI_D0I3_TIMEOUT            5  /* D0i3 set/unset max response time */
  35 #define MEI_HBM_TIMEOUT             1  /* 1 second */
  36
  37 /*
  38  * MEI Version
  39  */
  40 #define HBM_MINOR_VERSION                   0
  41 #define HBM_MAJOR_VERSION                   2
  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 /*
  50  * MEI version with Dynamic clients support
  51  */
  52 #define HBM_MINOR_VERSION_DC               0
  53 #define HBM_MAJOR_VERSION_DC               2
  54
  55 /*
  56  * MEI version with immediate reply to enum request support
  57  */
  58 #define HBM_MINOR_VERSION_IE               0
  59 #define HBM_MAJOR_VERSION_IE               2
  60
  61 /*
  62  * MEI version with disconnect on connection timeout support
  63  */
  64 #define HBM_MINOR_VERSION_DOT              0
  65 #define HBM_MAJOR_VERSION_DOT              2
  66
  67 /*
  68  * MEI version with notifcation support
  69  */
  70 #define HBM_MINOR_VERSION_EV               0
  71 #define HBM_MAJOR_VERSION_EV               2
  72
  73 /*
  74  * MEI version with fixed address client support
  75  */
  76 #define HBM_MINOR_VERSION_FA               0
  77 #define HBM_MAJOR_VERSION_FA               2
  78
  79 /* Host bus message command opcode */
  80 #define MEI_HBM_CMD_OP_MSK                  0x7f
  81 /* Host bus message command RESPONSE */
  82 #define MEI_HBM_CMD_RES_MSK                 0x80
  83
  84 /*
  85  * MEI Bus Message Command IDs
  86  */
  87 #define HOST_START_REQ_CMD                  0x01
  88 #define HOST_START_RES_CMD                  0x81
  89
  90 #define HOST_STOP_REQ_CMD                   0x02
  91 #define HOST_STOP_RES_CMD                   0x82
  92
  93 #define ME_STOP_REQ_CMD                     0x03
  94
  95 #define HOST_ENUM_REQ_CMD                   0x04
  96 #define HOST_ENUM_RES_CMD                   0x84
  97
  98 #define HOST_CLIENT_PROPERTIES_REQ_CMD      0x05
  99 #define HOST_CLIENT_PROPERTIES_RES_CMD      0x85
 100
 101 #define CLIENT_CONNECT_REQ_CMD              0x06
 102 #define CLIENT_CONNECT_RES_CMD              0x86
 103
 104 #define CLIENT_DISCONNECT_REQ_CMD           0x07
 105 #define CLIENT_DISCONNECT_RES_CMD           0x87
 106
 107 #define MEI_FLOW_CONTROL_CMD                0x08
 108
 109 #define MEI_PG_ISOLATION_ENTRY_REQ_CMD      0x0a
 110 #define MEI_PG_ISOLATION_ENTRY_RES_CMD      0x8a
 111 #define MEI_PG_ISOLATION_EXIT_REQ_CMD       0x0b
 112 #define MEI_PG_ISOLATION_EXIT_RES_CMD       0x8b
 113
 114 #define MEI_HBM_ADD_CLIENT_REQ_CMD          0x0f
 115 #define MEI_HBM_ADD_CLIENT_RES_CMD          0x8f
 116
 117 #define MEI_HBM_NOTIFY_REQ_CMD              0x10
 118 #define MEI_HBM_NOTIFY_RES_CMD              0x90
 119 #define MEI_HBM_NOTIFICATION_CMD            0x11
 120
 121 /*
 122  * MEI Stop Reason
 123  * used by hbm_host_stop_request.reason
 124  */
 125 enum mei_stop_reason_types {
 126         DRIVER_STOP_REQUEST = 0x00,
 127         DEVICE_D1_ENTRY = 0x01,
 128         DEVICE_D2_ENTRY = 0x02,
 129         DEVICE_D3_ENTRY = 0x03,
 130         SYSTEM_S1_ENTRY = 0x04,
 131         SYSTEM_S2_ENTRY = 0x05,
 132         SYSTEM_S3_ENTRY = 0x06,
 133         SYSTEM_S4_ENTRY = 0x07,
 134         SYSTEM_S5_ENTRY = 0x08
 135 };
 136
 137
 138 /**
 139  * enum mei_hbm_status  - mei host bus messages return values
 140  *
 141  * @MEI_HBMS_SUCCESS           : status success
 142  * @MEI_HBMS_CLIENT_NOT_FOUND  : client not found
 143  * @MEI_HBMS_ALREADY_EXISTS    : connection already established
 144  * @MEI_HBMS_REJECTED          : connection is rejected
 145  * @MEI_HBMS_INVALID_PARAMETER : invalid parameter
 146  * @MEI_HBMS_NOT_ALLOWED       : operation not allowed
 147  * @MEI_HBMS_ALREADY_STARTED   : system is already started
 148  * @MEI_HBMS_NOT_STARTED       : system not started
 149  *
 150  * @MEI_HBMS_MAX               : sentinel
 151  */
 152 enum mei_hbm_status {
 153         MEI_HBMS_SUCCESS           = 0,
 154         MEI_HBMS_CLIENT_NOT_FOUND  = 1,
 155         MEI_HBMS_ALREADY_EXISTS    = 2,
 156         MEI_HBMS_REJECTED          = 3,
 157         MEI_HBMS_INVALID_PARAMETER = 4,
 158         MEI_HBMS_NOT_ALLOWED       = 5,
 159         MEI_HBMS_ALREADY_STARTED   = 6,
 160         MEI_HBMS_NOT_STARTED       = 7,
 161
 162         MEI_HBMS_MAX
 163 };
 164
 165
 166 /*
 167  * Client Connect Status
 168  * used by hbm_client_connect_response.status
 169  */
 170 enum mei_cl_connect_status {
 171         MEI_CL_CONN_SUCCESS          = MEI_HBMS_SUCCESS,
 172         MEI_CL_CONN_NOT_FOUND        = MEI_HBMS_CLIENT_NOT_FOUND,
 173         MEI_CL_CONN_ALREADY_STARTED  = MEI_HBMS_ALREADY_EXISTS,
 174         MEI_CL_CONN_OUT_OF_RESOURCES = MEI_HBMS_REJECTED,
 175         MEI_CL_CONN_MESSAGE_SMALL    = MEI_HBMS_INVALID_PARAMETER,
 176         MEI_CL_CONN_NOT_ALLOWED      = MEI_HBMS_NOT_ALLOWED,
 177 };
 178
 179 /*
 180  * Client Disconnect Status
 181  */
 182 enum  mei_cl_disconnect_status {
 183         MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS
 184 };
 185
 186 /*
 187  *  MEI BUS Interface Section
 188  */
 189 struct mei_msg_hdr {
 190         u32 me_addr:8;
 191         u32 host_addr:8;
 192         u32 length:9;
 193         u32 reserved:5;
 194         u32 internal:1;
 195         u32 msg_complete:1;
 196 } __packed;
 197
 198
 199 struct mei_bus_message {
 200         u8 hbm_cmd;
 201         u8 data[0];
 202 } __packed;
 203
 204 /**
 205  * struct hbm_cl_cmd - client specific host bus command
 206  *      CONNECT, DISCONNECT, and FlOW CONTROL
 207  *
 208  * @hbm_cmd: bus message command header
 209  * @me_addr: address of the client in ME
 210  * @host_addr: address of the client in the driver
 211  * @data: generic data
 212  */
 213 struct mei_hbm_cl_cmd {
 214         u8 hbm_cmd;
 215         u8 me_addr;
 216         u8 host_addr;
 217         u8 data;
 218 };
 219
 220 struct hbm_version {
 221         u8 minor_version;
 222         u8 major_version;
 223 } __packed;
 224
 225 struct hbm_host_version_request {
 226         u8 hbm_cmd;
 227         u8 reserved;
 228         struct hbm_version host_version;
 229 } __packed;
 230
 231 struct hbm_host_version_response {
 232         u8 hbm_cmd;
 233         u8 host_version_supported;
 234         struct hbm_version me_max_version;
 235 } __packed;
 236
 237 struct hbm_host_stop_request {
 238         u8 hbm_cmd;
 239         u8 reason;
 240         u8 reserved[2];
 241 } __packed;
 242
 243 struct hbm_host_stop_response {
 244         u8 hbm_cmd;
 245         u8 reserved[3];
 246 } __packed;
 247
 248 struct hbm_me_stop_request {
 249         u8 hbm_cmd;
 250         u8 reason;
 251         u8 reserved[2];
 252 } __packed;
 253
 254 /**
 255  * enum hbm_host_enum_flags - enumeration request flags (HBM version >= 2.0)
 256  *
 257  * @MEI_HBM_ENUM_F_ALLOW_ADD: allow dynamic clients add
 258  * @MEI_HBM_ENUM_F_IMMEDIATE_ENUM: allow FW to send answer immediately
 259  */
 260 enum hbm_host_enum_flags {
 261         MEI_HBM_ENUM_F_ALLOW_ADD = BIT(0),
 262         MEI_HBM_ENUM_F_IMMEDIATE_ENUM = BIT(1),
 263 };
 264
 265 /**
 266  * struct hbm_host_enum_request - enumeration request from host to fw
 267  *
 268  * @hbm_cmd : bus message command header
 269  * @flags   : request flags
 270  * @reserved: reserved
 271  */
 272 struct hbm_host_enum_request {
 273         u8 hbm_cmd;
 274         u8 flags;
 275         u8 reserved[2];
 276 } __packed;
 277
 278 struct hbm_host_enum_response {
 279         u8 hbm_cmd;
 280         u8 reserved[3];
 281         u8 valid_addresses[32];
 282 } __packed;
 283
 284 struct mei_client_properties {
 285         uuid_le protocol_name;
 286         u8 protocol_version;
 287         u8 max_number_of_connections;
 288         u8 fixed_address;
 289         u8 single_recv_buf;
 290         u32 max_msg_length;
 291 } __packed;
 292
 293 struct hbm_props_request {
 294         u8 hbm_cmd;
 295         u8 me_addr;
 296         u8 reserved[2];
 297 } __packed;
 298
 299 struct hbm_props_response {
 300         u8 hbm_cmd;
 301         u8 me_addr;
 302         u8 status;
 303         u8 reserved[1];
 304         struct mei_client_properties client_properties;
 305 } __packed;
 306
 307 /**
 308  * struct hbm_add_client_request - request to add a client
 309  *     might be sent by fw after enumeration has already completed
 310  *
 311  * @hbm_cmd: bus message command header
 312  * @me_addr: address of the client in ME
 313  * @reserved: reserved
 314  * @client_properties: client properties
 315  */
 316 struct hbm_add_client_request {
 317         u8 hbm_cmd;
 318         u8 me_addr;
 319         u8 reserved[2];
 320         struct mei_client_properties client_properties;
 321 } __packed;
 322
 323 /**
 324  * struct hbm_add_client_response - response to add a client
 325  *     sent by the host to report client addition status to fw
 326  *
 327  * @hbm_cmd: bus message command header
 328  * @me_addr: address of the client in ME
 329  * @status: if HBMS_SUCCESS then the client can now accept connections.
 330  * @reserved: reserved
 331  */
 332 struct hbm_add_client_response {
 333         u8 hbm_cmd;
 334         u8 me_addr;
 335         u8 status;
 336         u8 reserved[1];
 337 } __packed;
 338
 339 /**
 340  * struct hbm_power_gate - power gate request/response
 341  *
 342  * @hbm_cmd: bus message command header
 343  * @reserved: reserved
 344  */
 345 struct hbm_power_gate {
 346         u8 hbm_cmd;
 347         u8 reserved[3];
 348 } __packed;
 349
 350 /**
 351  * struct hbm_client_connect_request - connect/disconnect request
 352  *
 353  * @hbm_cmd: bus message command header
 354  * @me_addr: address of the client in ME
 355  * @host_addr: address of the client in the driver
 356  * @reserved: reserved
 357  */
 358 struct hbm_client_connect_request {
 359         u8 hbm_cmd;
 360         u8 me_addr;
 361         u8 host_addr;
 362         u8 reserved;
 363 } __packed;
 364
 365 /**
 366  * struct hbm_client_connect_response - connect/disconnect response
 367  *
 368  * @hbm_cmd: bus message command header
 369  * @me_addr: address of the client in ME
 370  * @host_addr: address of the client in the driver
 371  * @status: status of the request
 372  */
 373 struct hbm_client_connect_response {
 374         u8 hbm_cmd;
 375         u8 me_addr;
 376         u8 host_addr;
 377         u8 status;
 378 } __packed;
 379
 380
 381 #define MEI_FC_MESSAGE_RESERVED_LENGTH           5
 382
 383 struct hbm_flow_control {
 384         u8 hbm_cmd;
 385         u8 me_addr;
 386         u8 host_addr;
 387         u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
 388 } __packed;
 389
 390 #define MEI_HBM_NOTIFICATION_START 1
 391 #define MEI_HBM_NOTIFICATION_STOP  0
 392 /**
 393  * struct hbm_notification_request - start/stop notification request
 394  *
 395  * @hbm_cmd: bus message command header
 396  * @me_addr: address of the client in ME
 397  * @host_addr: address of the client in the driver
 398  * @start:  start = 1 or stop = 0 asynchronous notifications
 399  */
 400 struct hbm_notification_request {
 401         u8 hbm_cmd;
 402         u8 me_addr;
 403         u8 host_addr;
 404         u8 start;
 405 } __packed;
 406
 407 /**
 408  * struct hbm_notification_response - start/stop notification response
 409  *
 410  * @hbm_cmd: bus message command header
 411  * @me_addr: address of the client in ME
 412  * @host_addr: - address of the client in the driver
 413  * @status: (mei_hbm_status) response status for the request
 414  *  - MEI_HBMS_SUCCESS: successful stop/start
 415  *  - MEI_HBMS_CLIENT_NOT_FOUND: if the connection could not be found.
 416  *  - MEI_HBMS_ALREADY_STARTED: for start requests for a previously
 417  *                         started notification.
 418  *  - MEI_HBMS_NOT_STARTED: for stop request for a connected client for whom
 419  *                         asynchronous notifications are currently disabled.
 420  *
 421  * @start:  start = 1 or stop = 0 asynchronous notifications
 422  * @reserved: reserved
 423  */
 424 struct hbm_notification_response {
 425         u8 hbm_cmd;
 426         u8 me_addr;
 427         u8 host_addr;
 428         u8 status;
 429         u8 start;
 430         u8 reserved[3];
 431 } __packed;
 432
 433 /**
 434  * struct hbm_notification - notification event
 435  *
 436  * @hbm_cmd: bus message command header
 437  * @me_addr:  address of the client in ME
 438  * @host_addr:  address of the client in the driver
 439  * @reserved: reserved for alignment
 440  */
 441 struct hbm_notification {
 442         u8 hbm_cmd;
 443         u8 me_addr;
 444         u8 host_addr;
 445         u8 reserved[1];
 446 } __packed;
 447
 448 #endif