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 652