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_PGI_TIMEOUT             1  /* PG Isolation time response 1 sec */
  32 #define MEI_D0I3_TIMEOUT            5  /* D0i3 set/unset max response time */
  33 #define MEI_HBM_TIMEOUT             1  /* 1 second */
  34
  35 /*
  36  * MEI Version
  37  */
  38 #define HBM_MINOR_VERSION                   0
  39 #define HBM_MAJOR_VERSION                   2
  40
  41 /*
  42  * MEI version with PGI support
  43  */
  44 #define HBM_MINOR_VERSION_PGI               1
  45 #define HBM_MAJOR_VERSION_PGI               1
  46
  47 /*
  48  * MEI version with Dynamic clients support
  49  */
  50 #define HBM_MINOR_VERSION_DC               0
  51 #define HBM_MAJOR_VERSION_DC               2
  52
  53 /*
  54  * MEI version with immediate reply to enum request support
  55  */
  56 #define HBM_MINOR_VERSION_IE               0
  57 #define HBM_MAJOR_VERSION_IE               2
  58
  59 /*
  60  * MEI version with disconnect on connection timeout support
  61  */
  62 #define HBM_MINOR_VERSION_DOT              0
  63 #define HBM_MAJOR_VERSION_DOT              2
  64
  65 /*
  66  * MEI version with notification support
  67  */
  68 #define HBM_MINOR_VERSION_EV               0
  69 #define HBM_MAJOR_VERSION_EV               2
  70
  71 /*
  72  * MEI version with fixed address client support
  73  */
  74 #define HBM_MINOR_VERSION_FA               0
  75 #define HBM_MAJOR_VERSION_FA               2
  76
  77 /*
  78  * MEI version with OS ver message support
  79  */
  80 #define HBM_MINOR_VERSION_OS               0
  81 #define HBM_MAJOR_VERSION_OS               2
  82
  83 /*
  84  * MEI version with dma ring support
  85  */
  86 #define HBM_MINOR_VERSION_DR               1
  87 #define HBM_MAJOR_VERSION_DR               2
  88
  89 /* Host bus message command opcode */
  90 #define MEI_HBM_CMD_OP_MSK                  0x7f
  91 /* Host bus message command RESPONSE */
  92 #define MEI_HBM_CMD_RES_MSK                 0x80
  93
  94 /*
  95  * MEI Bus Message Command IDs
  96  */
  97 #define HOST_START_REQ_CMD                  0x01
  98 #define HOST_START_RES_CMD                  0x81
  99
 100 #define HOST_STOP_REQ_CMD                   0x02
 101 #define HOST_STOP_RES_CMD                   0x82
 102
 103 #define ME_STOP_REQ_CMD                     0x03
 104
 105 #define HOST_ENUM_REQ_CMD                   0x04
 106 #define HOST_ENUM_RES_CMD                   0x84
 107
 108 #define HOST_CLIENT_PROPERTIES_REQ_CMD      0x05
 109 #define HOST_CLIENT_PROPERTIES_RES_CMD      0x85
 110
 111 #define CLIENT_CONNECT_REQ_CMD              0x06
 112 #define CLIENT_CONNECT_RES_CMD              0x86
 113
 114 #define CLIENT_DISCONNECT_REQ_CMD           0x07
 115 #define CLIENT_DISCONNECT_RES_CMD           0x87
 116
 117 #define MEI_FLOW_CONTROL_CMD                0x08
 118
 119 #define MEI_PG_ISOLATION_ENTRY_REQ_CMD      0x0a
 120 #define MEI_PG_ISOLATION_ENTRY_RES_CMD      0x8a
 121 #define MEI_PG_ISOLATION_EXIT_REQ_CMD       0x0b
 122 #define MEI_PG_ISOLATION_EXIT_RES_CMD       0x8b
 123
 124 #define MEI_HBM_ADD_CLIENT_REQ_CMD          0x0f
 125 #define MEI_HBM_ADD_CLIENT_RES_CMD          0x8f
 126
 127 #define MEI_HBM_NOTIFY_REQ_CMD              0x10
 128 #define MEI_HBM_NOTIFY_RES_CMD              0x90
 129 #define MEI_HBM_NOTIFICATION_CMD            0x11
 130
 131 #define MEI_HBM_DMA_SETUP_REQ_CMD           0x12
 132 #define MEI_HBM_DMA_SETUP_RES_CMD           0x92
 133
 134 /*
 135  * MEI Stop Reason
 136  * used by hbm_host_stop_request.reason
 137  */
 138 enum mei_stop_reason_types {
 139         DRIVER_STOP_REQUEST = 0x00,
 140         DEVICE_D1_ENTRY = 0x01,
 141         DEVICE_D2_ENTRY = 0x02,
 142         DEVICE_D3_ENTRY = 0x03,
 143         SYSTEM_S1_ENTRY = 0x04,
 144         SYSTEM_S2_ENTRY = 0x05,
 145         SYSTEM_S3_ENTRY = 0x06,
 146         SYSTEM_S4_ENTRY = 0x07,
 147         SYSTEM_S5_ENTRY = 0x08
 148 };
 149
 150
 151 /**
 152  * enum mei_hbm_status  - mei host bus messages return values
 153  *
 154  * @MEI_HBMS_SUCCESS           : status success
 155  * @MEI_HBMS_CLIENT_NOT_FOUND  : client not found
 156  * @MEI_HBMS_ALREADY_EXISTS    : connection already established
 157  * @MEI_HBMS_REJECTED          : connection is rejected
 158  * @MEI_HBMS_INVALID_PARAMETER : invalid parameter
 159  * @MEI_HBMS_NOT_ALLOWED       : operation not allowed
 160  * @MEI_HBMS_ALREADY_STARTED   : system is already started
 161  * @MEI_HBMS_NOT_STARTED       : system not started
 162  *
 163  * @MEI_HBMS_MAX               : sentinel
 164  */
 165 enum mei_hbm_status {
 166         MEI_HBMS_SUCCESS           = 0,
 167         MEI_HBMS_CLIENT_NOT_FOUND  = 1,
 168         MEI_HBMS_ALREADY_EXISTS    = 2,
 169         MEI_HBMS_REJECTED          = 3,
 170         MEI_HBMS_INVALID_PARAMETER = 4,
 171         MEI_HBMS_NOT_ALLOWED       = 5,
 172         MEI_HBMS_ALREADY_STARTED   = 6,
 173         MEI_HBMS_NOT_STARTED       = 7,
 174
 175         MEI_HBMS_MAX
 176 };
 177
 178
 179 /*
 180  * Client Connect Status
 181  * used by hbm_client_connect_response.status
 182  */
 183 enum mei_cl_connect_status {
 184         MEI_CL_CONN_SUCCESS          = MEI_HBMS_SUCCESS,
 185         MEI_CL_CONN_NOT_FOUND        = MEI_HBMS_CLIENT_NOT_FOUND,
 186         MEI_CL_CONN_ALREADY_STARTED  = MEI_HBMS_ALREADY_EXISTS,
 187         MEI_CL_CONN_OUT_OF_RESOURCES = MEI_HBMS_REJECTED,
 188         MEI_CL_CONN_MESSAGE_SMALL    = MEI_HBMS_INVALID_PARAMETER,
 189         MEI_CL_CONN_NOT_ALLOWED      = MEI_HBMS_NOT_ALLOWED,
 190 };
 191
 192 /*
 193  * Client Disconnect Status
 194  */
 195 enum  mei_cl_disconnect_status {
 196         MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS
 197 };
 198
 199 /**
 200  * struct mei_msg_hdr - MEI BUS Interface Section
 201  *
 202  * @me_addr: device address
 203  * @host_addr: host address
 204  * @length: message length
 205  * @reserved: reserved
 206  * @dma_ring: message is on dma ring
 207  * @internal: message is internal
 208  * @msg_complete: last packet of the message
 209  */
 210 struct mei_msg_hdr {
 211         u32 me_addr:8;
 212         u32 host_addr:8;
 213         u32 length:9;
 214         u32 reserved:4;
 215         u32 dma_ring:1;
 216         u32 internal:1;
 217         u32 msg_complete:1;
 218 } __packed;
 219
 220 struct mei_bus_message {
 221         u8 hbm_cmd;
 222         u8 data[0];
 223 } __packed;
 224
 225 /**
 226  * struct hbm_cl_cmd - client specific host bus command
 227  *      CONNECT, DISCONNECT, and FlOW CONTROL
 228  *
 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
 232  * @data: generic data
 233  */
 234 struct mei_hbm_cl_cmd {
 235         u8 hbm_cmd;
 236         u8 me_addr;
 237         u8 host_addr;
 238         u8 data;
 239 };
 240
 241 struct hbm_version {
 242         u8 minor_version;
 243         u8 major_version;
 244 } __packed;
 245
 246 struct hbm_host_version_request {
 247         u8 hbm_cmd;
 248         u8 reserved;
 249         struct hbm_version host_version;
 250 } __packed;
 251
 252 struct hbm_host_version_response {
 253         u8 hbm_cmd;
 254         u8 host_version_supported;
 255         struct hbm_version me_max_version;
 256 } __packed;
 257
 258 struct hbm_host_stop_request {
 259         u8 hbm_cmd;
 260         u8 reason;
 261         u8 reserved[2];
 262 } __packed;
 263
 264 struct hbm_host_stop_response {
 265         u8 hbm_cmd;
 266         u8 reserved[3];
 267 } __packed;
 268
 269 struct hbm_me_stop_request {
 270         u8 hbm_cmd;
 271         u8 reason;
 272         u8 reserved[2];
 273 } __packed;
 274
 275 /**
 276  * enum hbm_host_enum_flags - enumeration request flags (HBM version >= 2.0)
 277  *
 278  * @MEI_HBM_ENUM_F_ALLOW_ADD: allow dynamic clients add
 279  * @MEI_HBM_ENUM_F_IMMEDIATE_ENUM: allow FW to send answer immediately
 280  */
 281 enum hbm_host_enum_flags {
 282         MEI_HBM_ENUM_F_ALLOW_ADD = BIT(0),
 283         MEI_HBM_ENUM_F_IMMEDIATE_ENUM = BIT(1),
 284 };
 285
 286 /**
 287  * struct hbm_host_enum_request - enumeration request from host to fw
 288  *
 289  * @hbm_cmd : bus message command header
 290  * @flags   : request flags
 291  * @reserved: reserved
 292  */
 293 struct hbm_host_enum_request {
 294         u8 hbm_cmd;
 295         u8 flags;
 296         u8 reserved[2];
 297 } __packed;
 298
 299 struct hbm_host_enum_response {
 300         u8 hbm_cmd;
 301         u8 reserved[3];
 302         u8 valid_addresses[32];
 303 } __packed;
 304
 305 struct mei_client_properties {
 306         uuid_le protocol_name;
 307         u8 protocol_version;
 308         u8 max_number_of_connections;
 309         u8 fixed_address;
 310         u8 single_recv_buf;
 311         u32 max_msg_length;
 312 } __packed;
 313
 314 struct hbm_props_request {
 315         u8 hbm_cmd;
 316         u8 me_addr;
 317         u8 reserved[2];
 318 } __packed;
 319
 320 struct hbm_props_response {
 321         u8 hbm_cmd;
 322         u8 me_addr;
 323         u8 status;
 324         u8 reserved[1];
 325         struct mei_client_properties client_properties;
 326 } __packed;
 327
 328 /**
 329  * struct hbm_add_client_request - request to add a client
 330  *     might be sent by fw after enumeration has already completed
 331  *
 332  * @hbm_cmd: bus message command header
 333  * @me_addr: address of the client in ME
 334  * @reserved: reserved
 335  * @client_properties: client properties
 336  */
 337 struct hbm_add_client_request {
 338         u8 hbm_cmd;
 339         u8 me_addr;
 340         u8 reserved[2];
 341         struct mei_client_properties client_properties;
 342 } __packed;
 343
 344 /**
 345  * struct hbm_add_client_response - response to add a client
 346  *     sent by the host to report client addition status to fw
 347  *
 348  * @hbm_cmd: bus message command header
 349  * @me_addr: address of the client in ME
 350  * @status: if HBMS_SUCCESS then the client can now accept connections.
 351  * @reserved: reserved
 352  */
 353 struct hbm_add_client_response {
 354         u8 hbm_cmd;
 355         u8 me_addr;
 356         u8 status;
 357         u8 reserved[1];
 358 } __packed;
 359
 360 /**
 361  * struct hbm_power_gate - power gate request/response
 362  *
 363  * @hbm_cmd: bus message command header
 364  * @reserved: reserved
 365  */
 366 struct hbm_power_gate {
 367         u8 hbm_cmd;
 368         u8 reserved[3];
 369 } __packed;
 370
 371 /**
 372  * struct hbm_client_connect_request - connect/disconnect request
 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  * @reserved: reserved
 378  */
 379 struct hbm_client_connect_request {
 380         u8 hbm_cmd;
 381         u8 me_addr;
 382         u8 host_addr;
 383         u8 reserved;
 384 } __packed;
 385
 386 /**
 387  * struct hbm_client_connect_response - connect/disconnect response
 388  *
 389  * @hbm_cmd: bus message command header
 390  * @me_addr: address of the client in ME
 391  * @host_addr: address of the client in the driver
 392  * @status: status of the request
 393  */
 394 struct hbm_client_connect_response {
 395         u8 hbm_cmd;
 396         u8 me_addr;
 397         u8 host_addr;
 398         u8 status;
 399 } __packed;
 400
 401
 402 #define MEI_FC_MESSAGE_RESERVED_LENGTH           5
 403
 404 struct hbm_flow_control {
 405         u8 hbm_cmd;
 406         u8 me_addr;
 407         u8 host_addr;
 408         u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
 409 } __packed;
 410
 411 #define MEI_HBM_NOTIFICATION_START 1
 412 #define MEI_HBM_NOTIFICATION_STOP  0
 413 /**
 414  * struct hbm_notification_request - start/stop notification request
 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  * @start:  start = 1 or stop = 0 asynchronous notifications
 420  */
 421 struct hbm_notification_request {
 422         u8 hbm_cmd;
 423         u8 me_addr;
 424         u8 host_addr;
 425         u8 start;
 426 } __packed;
 427
 428 /**
 429  * struct hbm_notification_response - start/stop notification response
 430  *
 431  * @hbm_cmd: bus message command header
 432  * @me_addr: address of the client in ME
 433  * @host_addr: - address of the client in the driver
 434  * @status: (mei_hbm_status) response status for the request
 435  *  - MEI_HBMS_SUCCESS: successful stop/start
 436  *  - MEI_HBMS_CLIENT_NOT_FOUND: if the connection could not be found.
 437  *  - MEI_HBMS_ALREADY_STARTED: for start requests for a previously
 438  *                         started notification.
 439  *  - MEI_HBMS_NOT_STARTED: for stop request for a connected client for whom
 440  *                         asynchronous notifications are currently disabled.
 441  *
 442  * @start:  start = 1 or stop = 0 asynchronous notifications
 443  * @reserved: reserved
 444  */
 445 struct hbm_notification_response {
 446         u8 hbm_cmd;
 447         u8 me_addr;
 448         u8 host_addr;
 449         u8 status;
 450         u8 start;
 451         u8 reserved[3];
 452 } __packed;
 453
 454 /**
 455  * struct hbm_notification - notification event
 456  *
 457  * @hbm_cmd: bus message command header
 458  * @me_addr:  address of the client in ME
 459  * @host_addr:  address of the client in the driver
 460  * @reserved: reserved for alignment
 461  */
 462 struct hbm_notification {
 463         u8 hbm_cmd;
 464         u8 me_addr;
 465         u8 host_addr;
 466         u8 reserved[1];
 467 } __packed;
 468
 469 /**
 470  * struct hbm_dma_mem_dscr - dma ring
 471  *
 472  * @addr_hi: the high 32bits of 64 bit address
 473  * @addr_lo: the low  32bits of 64 bit address
 474  * @size   : size in bytes (must be power of 2)
 475  */
 476 struct hbm_dma_mem_dscr {
 477         u32 addr_hi;
 478         u32 addr_lo;
 479         u32 size;
 480 } __packed;
 481
 482 enum {
 483         DMA_DSCR_HOST = 0,
 484         DMA_DSCR_DEVICE = 1,
 485         DMA_DSCR_CTRL = 2,
 486         DMA_DSCR_NUM,
 487 };
 488
 489 /**
 490  * struct hbm_dma_setup_request - dma setup request
 491  *
 492  * @hbm_cmd: bus message command header
 493  * @reserved: reserved for alignment
 494  * @dma_dscr: dma descriptor for HOST, DEVICE, and CTRL
 495  */
 496 struct hbm_dma_setup_request {
 497         u8 hbm_cmd;
 498         u8 reserved[3];
 499         struct hbm_dma_mem_dscr dma_dscr[DMA_DSCR_NUM];
 500 } __packed;
 501
 502 /**
 503  * struct hbm_dma_setup_response - dma setup response
 504  *
 505  * @hbm_cmd: bus message command header
 506  * @status: 0 on success; otherwise DMA setup failed.
 507  * @reserved: reserved for alignment
 508  */
 509 struct hbm_dma_setup_response {
 510         u8 hbm_cmd;
 511         u8 status;
 512         u8 reserved[2];
 513 } __packed;
 514
 515 #endif