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 /*
  80  * MEI version with OS ver message support
  81  */
  82 #define HBM_MINOR_VERSION_OS               0
  83 #define HBM_MAJOR_VERSION_OS               2
  84
  85 /* Host bus message command opcode */
  86 #define MEI_HBM_CMD_OP_MSK                  0x7f
  87 /* Host bus message command RESPONSE */
  88 #define MEI_HBM_CMD_RES_MSK                 0x80
  89
  90 /*
  91  * MEI Bus Message Command IDs
  92  */
  93 #define HOST_START_REQ_CMD                  0x01
  94 #define HOST_START_RES_CMD                  0x81
  95
  96 #define HOST_STOP_REQ_CMD                   0x02
  97 #define HOST_STOP_RES_CMD                   0x82
  98
  99 #define ME_STOP_REQ_CMD                     0x03
 100
 101 #define HOST_ENUM_REQ_CMD                   0x04
 102 #define HOST_ENUM_RES_CMD                   0x84
 103
 104 #define HOST_CLIENT_PROPERTIES_REQ_CMD      0x05
 105 #define HOST_CLIENT_PROPERTIES_RES_CMD      0x85
 106
 107 #define CLIENT_CONNECT_REQ_CMD              0x06
 108 #define CLIENT_CONNECT_RES_CMD              0x86
 109
 110 #define CLIENT_DISCONNECT_REQ_CMD           0x07
 111 #define CLIENT_DISCONNECT_RES_CMD           0x87
 112
 113 #define MEI_FLOW_CONTROL_CMD                0x08
 114
 115 #define MEI_PG_ISOLATION_ENTRY_REQ_CMD      0x0a
 116 #define MEI_PG_ISOLATION_ENTRY_RES_CMD      0x8a
 117 #define MEI_PG_ISOLATION_EXIT_REQ_CMD       0x0b
 118 #define MEI_PG_ISOLATION_EXIT_RES_CMD       0x8b
 119
 120 #define MEI_HBM_ADD_CLIENT_REQ_CMD          0x0f
 121 #define MEI_HBM_ADD_CLIENT_RES_CMD          0x8f
 122
 123 #define MEI_HBM_NOTIFY_REQ_CMD              0x10
 124 #define MEI_HBM_NOTIFY_RES_CMD              0x90
 125 #define MEI_HBM_NOTIFICATION_CMD            0x11
 126
 127 /*
 128  * MEI Stop Reason
 129  * used by hbm_host_stop_request.reason
 130  */
 131 enum mei_stop_reason_types {
 132         DRIVER_STOP_REQUEST = 0x00,
 133         DEVICE_D1_ENTRY = 0x01,
 134         DEVICE_D2_ENTRY = 0x02,
 135         DEVICE_D3_ENTRY = 0x03,
 136         SYSTEM_S1_ENTRY = 0x04,
 137         SYSTEM_S2_ENTRY = 0x05,
 138         SYSTEM_S3_ENTRY = 0x06,
 139         SYSTEM_S4_ENTRY = 0x07,
 140         SYSTEM_S5_ENTRY = 0x08
 141 };
 142
 143
 144 /**
 145  * enum mei_hbm_status  - mei host bus messages return values
 146  *
 147  * @MEI_HBMS_SUCCESS           : status success
 148  * @MEI_HBMS_CLIENT_NOT_FOUND  : client not found
 149  * @MEI_HBMS_ALREADY_EXISTS    : connection already established
 150  * @MEI_HBMS_REJECTED          : connection is rejected
 151  * @MEI_HBMS_INVALID_PARAMETER : invalid parameter
 152  * @MEI_HBMS_NOT_ALLOWED       : operation not allowed
 153  * @MEI_HBMS_ALREADY_STARTED   : system is already started
 154  * @MEI_HBMS_NOT_STARTED       : system not started
 155  *
 156  * @MEI_HBMS_MAX               : sentinel
 157  */
 158 enum mei_hbm_status {
 159         MEI_HBMS_SUCCESS           = 0,
 160         MEI_HBMS_CLIENT_NOT_FOUND  = 1,
 161         MEI_HBMS_ALREADY_EXISTS    = 2,
 162         MEI_HBMS_REJECTED          = 3,
 163         MEI_HBMS_INVALID_PARAMETER = 4,
 164         MEI_HBMS_NOT_ALLOWED       = 5,
 165         MEI_HBMS_ALREADY_STARTED   = 6,
 166         MEI_HBMS_NOT_STARTED       = 7,
 167
 168         MEI_HBMS_MAX
 169 };
 170
 171
 172 /*
 173  * Client Connect Status
 174  * used by hbm_client_connect_response.status
 175  */
 176 enum mei_cl_connect_status {
 177         MEI_CL_CONN_SUCCESS          = MEI_HBMS_SUCCESS,
 178         MEI_CL_CONN_NOT_FOUND        = MEI_HBMS_CLIENT_NOT_FOUND,
 179         MEI_CL_CONN_ALREADY_STARTED  = MEI_HBMS_ALREADY_EXISTS,
 180         MEI_CL_CONN_OUT_OF_RESOURCES = MEI_HBMS_REJECTED,
 181         MEI_CL_CONN_MESSAGE_SMALL    = MEI_HBMS_INVALID_PARAMETER,
 182         MEI_CL_CONN_NOT_ALLOWED      = MEI_HBMS_NOT_ALLOWED,
 183 };
 184
 185 /*
 186  * Client Disconnect Status
 187  */
 188 enum  mei_cl_disconnect_status {
 189         MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS
 190 };
 191
 192 /*
 193  *  MEI BUS Interface Section
 194  */
 195 struct mei_msg_hdr {
 196         u32 me_addr:8;
 197         u32 host_addr:8;
 198         u32 length:9;
 199         u32 reserved:5;
 200         u32 internal:1;
 201         u32 msg_complete:1;
 202 } __packed;
 203
 204
 205 struct mei_bus_message {
 206         u8 hbm_cmd;
 207         u8 data[0];
 208 } __packed;
 209
 210 /**
 211  * struct hbm_cl_cmd - client specific host bus command
 212  *      CONNECT, DISCONNECT, and FlOW CONTROL
 213  *
 214  * @hbm_cmd: bus message command header
 215  * @me_addr: address of the client in ME
 216  * @host_addr: address of the client in the driver
 217  * @data: generic data
 218  */
 219 struct mei_hbm_cl_cmd {
 220         u8 hbm_cmd;
 221         u8 me_addr;
 222         u8 host_addr;
 223         u8 data;
 224 };
 225
 226 struct hbm_version {
 227         u8 minor_version;
 228         u8 major_version;
 229 } __packed;
 230
 231 struct hbm_host_version_request {
 232         u8 hbm_cmd;
 233         u8 reserved;
 234         struct hbm_version host_version;
 235 } __packed;
 236
 237 struct hbm_host_version_response {
 238         u8 hbm_cmd;
 239         u8 host_version_supported;
 240         struct hbm_version me_max_version;
 241 } __packed;
 242
 243 struct hbm_host_stop_request {
 244         u8 hbm_cmd;
 245         u8 reason;
 246         u8 reserved[2];
 247 } __packed;
 248
 249 struct hbm_host_stop_response {
 250         u8 hbm_cmd;
 251         u8 reserved[3];
 252 } __packed;
 253
 254 struct hbm_me_stop_request {
 255         u8 hbm_cmd;
 256         u8 reason;
 257         u8 reserved[2];
 258 } __packed;
 259
 260 /**
 261  * enum hbm_host_enum_flags - enumeration request flags (HBM version >= 2.0)
 262  *
 263  * @MEI_HBM_ENUM_F_ALLOW_ADD: allow dynamic clients add
 264  * @MEI_HBM_ENUM_F_IMMEDIATE_ENUM: allow FW to send answer immediately
 265  */
 266 enum hbm_host_enum_flags {
 267         MEI_HBM_ENUM_F_ALLOW_ADD = BIT(0),
 268         MEI_HBM_ENUM_F_IMMEDIATE_ENUM = BIT(1),
 269 };
 270
 271 /**
 272  * struct hbm_host_enum_request - enumeration request from host to fw
 273  *
 274  * @hbm_cmd : bus message command header
 275  * @flags   : request flags
 276  * @reserved: reserved
 277  */
 278 struct hbm_host_enum_request {
 279         u8 hbm_cmd;
 280         u8 flags;
 281         u8 reserved[2];
 282 } __packed;
 283
 284 struct hbm_host_enum_response {
 285         u8 hbm_cmd;
 286         u8 reserved[3];
 287         u8 valid_addresses[32];
 288 } __packed;
 289
 290 struct mei_client_properties {
 291         uuid_le protocol_name;
 292         u8 protocol_version;
 293         u8 max_number_of_connections;
 294         u8 fixed_address;
 295         u8 single_recv_buf;
 296         u32 max_msg_length;
 297 } __packed;
 298
 299 struct hbm_props_request {
 300         u8 hbm_cmd;
 301         u8 me_addr;
 302         u8 reserved[2];
 303 } __packed;
 304
 305 struct hbm_props_response {
 306         u8 hbm_cmd;
 307         u8 me_addr;
 308         u8 status;
 309         u8 reserved[1];
 310         struct mei_client_properties client_properties;
 311 } __packed;
 312
 313 /**
 314  * struct hbm_add_client_request - request to add a client
 315  *     might be sent by fw after enumeration has already completed
 316  *
 317  * @hbm_cmd: bus message command header
 318  * @me_addr: address of the client in ME
 319  * @reserved: reserved
 320  * @client_properties: client properties
 321  */
 322 struct hbm_add_client_request {
 323         u8 hbm_cmd;
 324         u8 me_addr;
 325         u8 reserved[2];
 326         struct mei_client_properties client_properties;
 327 } __packed;
 328
 329 /**
 330  * struct hbm_add_client_response - response to add a client
 331  *     sent by the host to report client addition status to fw
 332  *
 333  * @hbm_cmd: bus message command header
 334  * @me_addr: address of the client in ME
 335  * @status: if HBMS_SUCCESS then the client can now accept connections.
 336  * @reserved: reserved
 337  */
 338 struct hbm_add_client_response {
 339         u8 hbm_cmd;
 340         u8 me_addr;
 341         u8 status;
 342         u8 reserved[1];
 343 } __packed;
 344
 345 /**
 346  * struct hbm_power_gate - power gate request/response
 347  *
 348  * @hbm_cmd: bus message command header
 349  * @reserved: reserved
 350  */
 351 struct hbm_power_gate {
 352         u8 hbm_cmd;
 353         u8 reserved[3];
 354 } __packed;
 355
 356 /**
 357  * struct hbm_client_connect_request - connect/disconnect request
 358  *
 359  * @hbm_cmd: bus message command header
 360  * @me_addr: address of the client in ME
 361  * @host_addr: address of the client in the driver
 362  * @reserved: reserved
 363  */
 364 struct hbm_client_connect_request {
 365         u8 hbm_cmd;
 366         u8 me_addr;
 367         u8 host_addr;
 368         u8 reserved;
 369 } __packed;
 370
 371 /**
 372  * struct hbm_client_connect_response - connect/disconnect response
 373  *
 374  * @hbm_cmd: bus message command header
 375  * @me_addr: address of the client in ME
 376  * @host_addr: address of the client in the driver
 377  * @status: status of the request
 378  */
 379 struct hbm_client_connect_response {
 380         u8 hbm_cmd;
 381         u8 me_addr;
 382         u8 host_addr;
 383         u8 status;
 384 } __packed;
 385
 386
 387 #define MEI_FC_MESSAGE_RESERVED_LENGTH           5
 388
 389 struct hbm_flow_control {
 390         u8 hbm_cmd;
 391         u8 me_addr;
 392         u8 host_addr;
 393         u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
 394 } __packed;
 395
 396 #define MEI_HBM_NOTIFICATION_START 1
 397 #define MEI_HBM_NOTIFICATION_STOP  0
 398 /**
 399  * struct hbm_notification_request - start/stop notification request
 400  *
 401  * @hbm_cmd: bus message command header
 402  * @me_addr: address of the client in ME
 403  * @host_addr: address of the client in the driver
 404  * @start:  start = 1 or stop = 0 asynchronous notifications
 405  */
 406 struct hbm_notification_request {
 407         u8 hbm_cmd;
 408         u8 me_addr;
 409         u8 host_addr;
 410         u8 start;
 411 } __packed;
 412
 413 /**
 414  * struct hbm_notification_response - start/stop notification response
 415  *
 416  * @hbm_cmd: bus message command header
 417  * @me_addr: address of the client in ME
 418  * @host_addr: - address of the client in the driver
 419  * @status: (mei_hbm_status) response status for the request
 420  *  - MEI_HBMS_SUCCESS: successful stop/start
 421  *  - MEI_HBMS_CLIENT_NOT_FOUND: if the connection could not be found.
 422  *  - MEI_HBMS_ALREADY_STARTED: for start requests for a previously
 423  *                         started notification.
 424  *  - MEI_HBMS_NOT_STARTED: for stop request for a connected client for whom
 425  *                         asynchronous notifications are currently disabled.
 426  *
 427  * @start:  start = 1 or stop = 0 asynchronous notifications
 428  * @reserved: reserved
 429  */
 430 struct hbm_notification_response {
 431         u8 hbm_cmd;
 432         u8 me_addr;
 433         u8 host_addr;
 434         u8 status;
 435         u8 start;
 436         u8 reserved[3];
 437 } __packed;
 438
 439 /**
 440  * struct hbm_notification - notification event
 441  *
 442  * @hbm_cmd: bus message command header
 443  * @me_addr:  address of the client in ME
 444  * @host_addr:  address of the client in the driver
 445  * @reserved: reserved for alignment
 446  */
 447 struct hbm_notification {
 448         u8 hbm_cmd;
 449         u8 me_addr;
 450         u8 host_addr;
 451         u8 reserved[1];
 452 } __packed;
 453
 454 #endif