drivers/thunderbolt/tb_msgs.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Thunderbolt control channel messages
   4  *
   5  * Copyright (C) 2014 Andreas Noever <andreas.noever@gmail.com>
   6  * Copyright (C) 2017, Intel Corporation
   7  */
   8
   9 #ifndef _TB_MSGS
  10 #define _TB_MSGS
  11
  12 #include <linux/types.h>
  13 #include <linux/uuid.h>
  14
  15 enum tb_cfg_space {
  16         TB_CFG_HOPS = 0,
  17         TB_CFG_PORT = 1,
  18         TB_CFG_SWITCH = 2,
  19         TB_CFG_COUNTERS = 3,
  20 };
  21
  22 enum tb_cfg_error {
  23         TB_CFG_ERROR_PORT_NOT_CONNECTED = 0,
  24         TB_CFG_ERROR_LINK_ERROR = 1,
  25         TB_CFG_ERROR_INVALID_CONFIG_SPACE = 2,
  26         TB_CFG_ERROR_NO_SUCH_PORT = 4,
  27         TB_CFG_ERROR_ACK_PLUG_EVENT = 7, /* send as reply to TB_CFG_PKG_EVENT */
  28         TB_CFG_ERROR_LOOP = 8,
  29         TB_CFG_ERROR_HEC_ERROR_DETECTED = 12,
  30         TB_CFG_ERROR_FLOW_CONTROL_ERROR = 13,
  31         TB_CFG_ERROR_LOCK = 15,
  32 };
  33
  34 /* common header */
  35 struct tb_cfg_header {
  36         u32 route_hi:22;
  37         u32 unknown:10; /* highest order bit is set on replies */
  38         u32 route_lo;
  39 } __packed;
  40
  41 /* additional header for read/write packets */
  42 struct tb_cfg_address {
  43         u32 offset:13; /* in dwords */
  44         u32 length:6; /* in dwords */
  45         u32 port:6;
  46         enum tb_cfg_space space:2;
  47         u32 seq:2; /* sequence number  */
  48         u32 zero:3;
  49 } __packed;
  50
  51 /* TB_CFG_PKG_READ, response for TB_CFG_PKG_WRITE */
  52 struct cfg_read_pkg {
  53         struct tb_cfg_header header;
  54         struct tb_cfg_address addr;
  55 } __packed;
  56
  57 /* TB_CFG_PKG_WRITE, response for TB_CFG_PKG_READ */
  58 struct cfg_write_pkg {
  59         struct tb_cfg_header header;
  60         struct tb_cfg_address addr;
  61         u32 data[64]; /* maximum size, tb_cfg_address.length has 6 bits */
  62 } __packed;
  63
  64 /* TB_CFG_PKG_ERROR */
  65 struct cfg_error_pkg {
  66         struct tb_cfg_header header;
  67         enum tb_cfg_error error:4;
  68         u32 zero1:4;
  69         u32 port:6;
  70         u32 zero2:2; /* Both should be zero, still they are different fields. */
  71         u32 zero3:14;
  72         u32 pg:2;
  73 } __packed;
  74
  75 #define TB_CFG_ERROR_PG_HOT_PLUG        0x2
  76 #define TB_CFG_ERROR_PG_HOT_UNPLUG      0x3
  77
  78 /* TB_CFG_PKG_EVENT */
  79 struct cfg_event_pkg {
  80         struct tb_cfg_header header;
  81         u32 port:6;
  82         u32 zero:25;
  83         bool unplug:1;
  84 } __packed;
  85
  86 /* TB_CFG_PKG_RESET */
  87 struct cfg_reset_pkg {
  88         struct tb_cfg_header header;
  89 } __packed;
  90
  91 /* TB_CFG_PKG_PREPARE_TO_SLEEP */
  92 struct cfg_pts_pkg {
  93         struct tb_cfg_header header;
  94         u32 data;
  95 } __packed;
  96
  97 /* ICM messages */
  98
  99 enum icm_pkg_code {
 100         ICM_GET_TOPOLOGY = 0x1,
 101         ICM_DRIVER_READY = 0x3,
 102         ICM_APPROVE_DEVICE = 0x4,
 103         ICM_CHALLENGE_DEVICE = 0x5,
 104         ICM_ADD_DEVICE_KEY = 0x6,
 105         ICM_GET_ROUTE = 0xa,
 106         ICM_APPROVE_XDOMAIN = 0x10,
 107         ICM_DISCONNECT_XDOMAIN = 0x11,
 108         ICM_PREBOOT_ACL = 0x18,
 109         ICM_USB4_SWITCH_OP = 0x20,
 110 };
 111
 112 enum icm_event_code {
 113         ICM_EVENT_DEVICE_CONNECTED = 0x3,
 114         ICM_EVENT_DEVICE_DISCONNECTED = 0x4,
 115         ICM_EVENT_XDOMAIN_CONNECTED = 0x6,
 116         ICM_EVENT_XDOMAIN_DISCONNECTED = 0x7,
 117         ICM_EVENT_RTD3_VETO = 0xa,
 118 };
 119
 120 struct icm_pkg_header {
 121         u8 code;
 122         u8 flags;
 123         u8 packet_id;
 124         u8 total_packets;
 125 };
 126
 127 #define ICM_FLAGS_ERROR                 BIT(0)
 128 #define ICM_FLAGS_NO_KEY                BIT(1)
 129 #define ICM_FLAGS_SLEVEL_SHIFT          3
 130 #define ICM_FLAGS_SLEVEL_MASK           GENMASK(4, 3)
 131 #define ICM_FLAGS_DUAL_LANE             BIT(5)
 132 #define ICM_FLAGS_SPEED_GEN3            BIT(7)
 133 #define ICM_FLAGS_WRITE                 BIT(7)
 134
 135 struct icm_pkg_driver_ready {
 136         struct icm_pkg_header hdr;
 137 };
 138
 139 /* Falcon Ridge only messages */
 140
 141 struct icm_fr_pkg_driver_ready_response {
 142         struct icm_pkg_header hdr;
 143         u8 romver;
 144         u8 ramver;
 145         u16 security_level;
 146 };
 147
 148 #define ICM_FR_SLEVEL_MASK              0xf
 149
 150 /* Falcon Ridge & Alpine Ridge common messages */
 151
 152 struct icm_fr_pkg_get_topology {
 153         struct icm_pkg_header hdr;
 154 };
 155
 156 #define ICM_GET_TOPOLOGY_PACKETS        14
 157
 158 struct icm_fr_pkg_get_topology_response {
 159         struct icm_pkg_header hdr;
 160         u32 route_lo;
 161         u32 route_hi;
 162         u8 first_data;
 163         u8 second_data;
 164         u8 drom_i2c_address_index;
 165         u8 switch_index;
 166         u32 reserved[2];
 167         u32 ports[16];
 168         u32 port_hop_info[16];
 169 };
 170
 171 #define ICM_SWITCH_USED                 BIT(0)
 172 #define ICM_SWITCH_UPSTREAM_PORT_MASK   GENMASK(7, 1)
 173 #define ICM_SWITCH_UPSTREAM_PORT_SHIFT  1
 174
 175 #define ICM_PORT_TYPE_MASK              GENMASK(23, 0)
 176 #define ICM_PORT_INDEX_SHIFT            24
 177 #define ICM_PORT_INDEX_MASK             GENMASK(31, 24)
 178
 179 struct icm_fr_event_device_connected {
 180         struct icm_pkg_header hdr;
 181         uuid_t ep_uuid;
 182         u8 connection_key;
 183         u8 connection_id;
 184         u16 link_info;
 185         u32 ep_name[55];
 186 };
 187
 188 #define ICM_LINK_INFO_LINK_MASK         0x7
 189 #define ICM_LINK_INFO_DEPTH_SHIFT       4
 190 #define ICM_LINK_INFO_DEPTH_MASK        GENMASK(7, 4)
 191 #define ICM_LINK_INFO_APPROVED          BIT(8)
 192 #define ICM_LINK_INFO_REJECTED          BIT(9)
 193 #define ICM_LINK_INFO_BOOT              BIT(10)
 194
 195 struct icm_fr_pkg_approve_device {
 196         struct icm_pkg_header hdr;
 197         uuid_t ep_uuid;
 198         u8 connection_key;
 199         u8 connection_id;
 200         u16 reserved;
 201 };
 202
 203 struct icm_fr_event_device_disconnected {
 204         struct icm_pkg_header hdr;
 205         u16 reserved;
 206         u16 link_info;
 207 };
 208
 209 struct icm_fr_event_xdomain_connected {
 210         struct icm_pkg_header hdr;
 211         u16 reserved;
 212         u16 link_info;
 213         uuid_t remote_uuid;
 214         uuid_t local_uuid;
 215         u32 local_route_hi;
 216         u32 local_route_lo;
 217         u32 remote_route_hi;
 218         u32 remote_route_lo;
 219 };
 220
 221 struct icm_fr_event_xdomain_disconnected {
 222         struct icm_pkg_header hdr;
 223         u16 reserved;
 224         u16 link_info;
 225         uuid_t remote_uuid;
 226 };
 227
 228 struct icm_fr_pkg_add_device_key {
 229         struct icm_pkg_header hdr;
 230         uuid_t ep_uuid;
 231         u8 connection_key;
 232         u8 connection_id;
 233         u16 reserved;
 234         u32 key[8];
 235 };
 236
 237 struct icm_fr_pkg_add_device_key_response {
 238         struct icm_pkg_header hdr;
 239         uuid_t ep_uuid;
 240         u8 connection_key;
 241         u8 connection_id;
 242         u16 reserved;
 243 };
 244
 245 struct icm_fr_pkg_challenge_device {
 246         struct icm_pkg_header hdr;
 247         uuid_t ep_uuid;
 248         u8 connection_key;
 249         u8 connection_id;
 250         u16 reserved;
 251         u32 challenge[8];
 252 };
 253
 254 struct icm_fr_pkg_challenge_device_response {
 255         struct icm_pkg_header hdr;
 256         uuid_t ep_uuid;
 257         u8 connection_key;
 258         u8 connection_id;
 259         u16 reserved;
 260         u32 challenge[8];
 261         u32 response[8];
 262 };
 263
 264 struct icm_fr_pkg_approve_xdomain {
 265         struct icm_pkg_header hdr;
 266         u16 reserved;
 267         u16 link_info;
 268         uuid_t remote_uuid;
 269         u16 transmit_path;
 270         u16 transmit_ring;
 271         u16 receive_path;
 272         u16 receive_ring;
 273 };
 274
 275 struct icm_fr_pkg_approve_xdomain_response {
 276         struct icm_pkg_header hdr;
 277         u16 reserved;
 278         u16 link_info;
 279         uuid_t remote_uuid;
 280         u16 transmit_path;
 281         u16 transmit_ring;
 282         u16 receive_path;
 283         u16 receive_ring;
 284 };
 285
 286 /* Alpine Ridge only messages */
 287
 288 struct icm_ar_pkg_driver_ready_response {
 289         struct icm_pkg_header hdr;
 290         u8 romver;
 291         u8 ramver;
 292         u16 info;
 293 };
 294
 295 #define ICM_AR_FLAGS_RTD3               BIT(6)
 296
 297 #define ICM_AR_INFO_SLEVEL_MASK         GENMASK(3, 0)
 298 #define ICM_AR_INFO_BOOT_ACL_SHIFT      7
 299 #define ICM_AR_INFO_BOOT_ACL_MASK       GENMASK(11, 7)
 300 #define ICM_AR_INFO_BOOT_ACL_SUPPORTED  BIT(13)
 301
 302 struct icm_ar_pkg_get_route {
 303         struct icm_pkg_header hdr;
 304         u16 reserved;
 305         u16 link_info;
 306 };
 307
 308 struct icm_ar_pkg_get_route_response {
 309         struct icm_pkg_header hdr;
 310         u16 reserved;
 311         u16 link_info;
 312         u32 route_hi;
 313         u32 route_lo;
 314 };
 315
 316 struct icm_ar_boot_acl_entry {
 317         u32 uuid_lo;
 318         u32 uuid_hi;
 319 };
 320
 321 #define ICM_AR_PREBOOT_ACL_ENTRIES      16
 322
 323 struct icm_ar_pkg_preboot_acl {
 324         struct icm_pkg_header hdr;
 325         struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
 326 };
 327
 328 struct icm_ar_pkg_preboot_acl_response {
 329         struct icm_pkg_header hdr;
 330         struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
 331 };
 332
 333 /* Titan Ridge messages */
 334
 335 struct icm_tr_pkg_driver_ready_response {
 336         struct icm_pkg_header hdr;
 337         u16 reserved1;
 338         u16 info;
 339         u32 nvm_version;
 340         u16 device_id;
 341         u16 reserved2;
 342 };
 343
 344 #define ICM_TR_FLAGS_RTD3               BIT(6)
 345
 346 #define ICM_TR_INFO_SLEVEL_MASK         GENMASK(2, 0)
 347 #define ICM_TR_INFO_PROTO_VERSION_MASK  GENMASK(6, 4)
 348 #define ICM_TR_INFO_PROTO_VERSION_SHIFT 4
 349 #define ICM_TR_INFO_BOOT_ACL_SHIFT      7
 350 #define ICM_TR_INFO_BOOT_ACL_MASK       GENMASK(12, 7)
 351
 352 struct icm_tr_event_device_connected {
 353         struct icm_pkg_header hdr;
 354         uuid_t ep_uuid;
 355         u32 route_hi;
 356         u32 route_lo;
 357         u8 connection_id;
 358         u8 reserved;
 359         u16 link_info;
 360         u32 ep_name[55];
 361 };
 362
 363 struct icm_tr_event_device_disconnected {
 364         struct icm_pkg_header hdr;
 365         u32 route_hi;
 366         u32 route_lo;
 367 };
 368
 369 struct icm_tr_event_xdomain_connected {
 370         struct icm_pkg_header hdr;
 371         u16 reserved;
 372         u16 link_info;
 373         uuid_t remote_uuid;
 374         uuid_t local_uuid;
 375         u32 local_route_hi;
 376         u32 local_route_lo;
 377         u32 remote_route_hi;
 378         u32 remote_route_lo;
 379 };
 380
 381 struct icm_tr_event_xdomain_disconnected {
 382         struct icm_pkg_header hdr;
 383         u32 route_hi;
 384         u32 route_lo;
 385         uuid_t remote_uuid;
 386 };
 387
 388 struct icm_tr_pkg_approve_device {
 389         struct icm_pkg_header hdr;
 390         uuid_t ep_uuid;
 391         u32 route_hi;
 392         u32 route_lo;
 393         u8 connection_id;
 394         u8 reserved1[3];
 395 };
 396
 397 struct icm_tr_pkg_add_device_key {
 398         struct icm_pkg_header hdr;
 399         uuid_t ep_uuid;
 400         u32 route_hi;
 401         u32 route_lo;
 402         u8 connection_id;
 403         u8 reserved[3];
 404         u32 key[8];
 405 };
 406
 407 struct icm_tr_pkg_challenge_device {
 408         struct icm_pkg_header hdr;
 409         uuid_t ep_uuid;
 410         u32 route_hi;
 411         u32 route_lo;
 412         u8 connection_id;
 413         u8 reserved[3];
 414         u32 challenge[8];
 415 };
 416
 417 struct icm_tr_pkg_approve_xdomain {
 418         struct icm_pkg_header hdr;
 419         u32 route_hi;
 420         u32 route_lo;
 421         uuid_t remote_uuid;
 422         u16 transmit_path;
 423         u16 transmit_ring;
 424         u16 receive_path;
 425         u16 receive_ring;
 426 };
 427
 428 struct icm_tr_pkg_disconnect_xdomain {
 429         struct icm_pkg_header hdr;
 430         u8 stage;
 431         u8 reserved[3];
 432         u32 route_hi;
 433         u32 route_lo;
 434         uuid_t remote_uuid;
 435 };
 436
 437 struct icm_tr_pkg_challenge_device_response {
 438         struct icm_pkg_header hdr;
 439         uuid_t ep_uuid;
 440         u32 route_hi;
 441         u32 route_lo;
 442         u8 connection_id;
 443         u8 reserved[3];
 444         u32 challenge[8];
 445         u32 response[8];
 446 };
 447
 448 struct icm_tr_pkg_add_device_key_response {
 449         struct icm_pkg_header hdr;
 450         uuid_t ep_uuid;
 451         u32 route_hi;
 452         u32 route_lo;
 453         u8 connection_id;
 454         u8 reserved[3];
 455 };
 456
 457 struct icm_tr_pkg_approve_xdomain_response {
 458         struct icm_pkg_header hdr;
 459         u32 route_hi;
 460         u32 route_lo;
 461         uuid_t remote_uuid;
 462         u16 transmit_path;
 463         u16 transmit_ring;
 464         u16 receive_path;
 465         u16 receive_ring;
 466 };
 467
 468 struct icm_tr_pkg_disconnect_xdomain_response {
 469         struct icm_pkg_header hdr;
 470         u8 stage;
 471         u8 reserved[3];
 472         u32 route_hi;
 473         u32 route_lo;
 474         uuid_t remote_uuid;
 475 };
 476
 477 /* Ice Lake messages */
 478
 479 struct icm_icl_event_rtd3_veto {
 480         struct icm_pkg_header hdr;
 481         u32 veto_reason;
 482 };
 483
 484 /* USB4 ICM messages */
 485
 486 struct icm_usb4_switch_op {
 487         struct icm_pkg_header hdr;
 488         u32 route_hi;
 489         u32 route_lo;
 490         u32 metadata;
 491         u16 opcode;
 492         u16 data_len_valid;
 493         u32 data[16];
 494 };
 495
 496 #define ICM_USB4_SWITCH_DATA_LEN_MASK   GENMASK(3, 0)
 497 #define ICM_USB4_SWITCH_DATA_VALID      BIT(4)
 498
 499 struct icm_usb4_switch_op_response {
 500         struct icm_pkg_header hdr;
 501         u32 route_hi;
 502         u32 route_lo;
 503         u32 metadata;
 504         u16 opcode;
 505         u16 status;
 506         u32 data[16];
 507 };
 508
 509 /* XDomain messages */
 510
 511 struct tb_xdomain_header {
 512         u32 route_hi;
 513         u32 route_lo;
 514         u32 length_sn;
 515 };
 516
 517 #define TB_XDOMAIN_LENGTH_MASK  GENMASK(5, 0)
 518 #define TB_XDOMAIN_SN_MASK      GENMASK(28, 27)
 519 #define TB_XDOMAIN_SN_SHIFT     27
 520
 521 enum tb_xdp_type {
 522         UUID_REQUEST_OLD = 1,
 523         UUID_RESPONSE = 2,
 524         PROPERTIES_REQUEST,
 525         PROPERTIES_RESPONSE,
 526         PROPERTIES_CHANGED_REQUEST,
 527         PROPERTIES_CHANGED_RESPONSE,
 528         ERROR_RESPONSE,
 529         UUID_REQUEST = 12,
 530         LINK_STATE_STATUS_REQUEST = 15,
 531         LINK_STATE_STATUS_RESPONSE,
 532         LINK_STATE_CHANGE_REQUEST,
 533         LINK_STATE_CHANGE_RESPONSE,
 534 };
 535
 536 struct tb_xdp_header {
 537         struct tb_xdomain_header xd_hdr;
 538         uuid_t uuid;
 539         u32 type;
 540 };
 541
 542 struct tb_xdp_error_response {
 543         struct tb_xdp_header hdr;
 544         u32 error;
 545 };
 546
 547 struct tb_xdp_link_state_status {
 548         struct tb_xdp_header hdr;
 549 };
 550
 551 struct tb_xdp_link_state_status_response {
 552         union {
 553                 struct tb_xdp_error_response err;
 554                 struct {
 555                         struct tb_xdp_header hdr;
 556                         u32 status;
 557                         u8 slw;
 558                         u8 tlw;
 559                         u8 sls;
 560                         u8 tls;
 561                 };
 562         };
 563 };
 564
 565 struct tb_xdp_link_state_change {
 566         struct tb_xdp_header hdr;
 567         u8 tlw;
 568         u8 tls;
 569         u16 reserved;
 570 };
 571
 572 struct tb_xdp_link_state_change_response {
 573         union {
 574                 struct tb_xdp_error_response err;
 575                 struct {
 576                         struct tb_xdp_header hdr;
 577                         u32 status;
 578                 };
 579         };
 580 };
 581
 582 struct tb_xdp_uuid {
 583         struct tb_xdp_header hdr;
 584 };
 585
 586 struct tb_xdp_uuid_response {
 587         union {
 588                 struct tb_xdp_error_response err;
 589                 struct {
 590                         struct tb_xdp_header hdr;
 591                         uuid_t src_uuid;
 592                         u32 src_route_hi;
 593                         u32 src_route_lo;
 594                 };
 595         };
 596 };
 597
 598 struct tb_xdp_properties {
 599         struct tb_xdp_header hdr;
 600         uuid_t src_uuid;
 601         uuid_t dst_uuid;
 602         u16 offset;
 603         u16 reserved;
 604 };
 605
 606 struct tb_xdp_properties_response {
 607         union {
 608                 struct tb_xdp_error_response err;
 609                 struct {
 610                         struct tb_xdp_header hdr;
 611                         uuid_t src_uuid;
 612                         uuid_t dst_uuid;
 613                         u16 offset;
 614                         u16 data_length;
 615                         u32 generation;
 616                         u32 data[];
 617                 };
 618         };
 619 };
 620
 621 /*
 622  * Max length of data array single XDomain property response is allowed
 623  * to carry.
 624  */
 625 #define TB_XDP_PROPERTIES_MAX_DATA_LENGTH       \
 626         (((256 - 4 - sizeof(struct tb_xdp_properties_response))) / 4)
 627
 628 /* Maximum size of the total property block in dwords we allow */
 629 #define TB_XDP_PROPERTIES_MAX_LENGTH            500
 630
 631 struct tb_xdp_properties_changed {
 632         struct tb_xdp_header hdr;
 633         uuid_t src_uuid;
 634 };
 635
 636 struct tb_xdp_properties_changed_response {
 637         union {
 638                 struct tb_xdp_error_response err;
 639                 struct tb_xdp_header hdr;
 640         };
 641 };
 642
 643 enum tb_xdp_error {
 644         ERROR_SUCCESS,
 645         ERROR_UNKNOWN_PACKET,
 646         ERROR_UNKNOWN_DOMAIN,
 647         ERROR_NOT_SUPPORTED,
 648         ERROR_NOT_READY,
 649 };
 650
 651 #endif