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