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 };
 110
 111 enum icm_event_code {
 112         ICM_EVENT_DEVICE_CONNECTED = 0x3,
 113         ICM_EVENT_DEVICE_DISCONNECTED = 0x4,
 114         ICM_EVENT_XDOMAIN_CONNECTED = 0x6,
 115         ICM_EVENT_XDOMAIN_DISCONNECTED = 0x7,
 116         ICM_EVENT_RTD3_VETO = 0xa,
 117 };
 118
 119 struct icm_pkg_header {
 120         u8 code;
 121         u8 flags;
 122         u8 packet_id;
 123         u8 total_packets;
 124 };
 125
 126 #define ICM_FLAGS_ERROR                 BIT(0)
 127 #define ICM_FLAGS_NO_KEY                BIT(1)
 128 #define ICM_FLAGS_SLEVEL_SHIFT          3
 129 #define ICM_FLAGS_SLEVEL_MASK           GENMASK(4, 3)
 130 #define ICM_FLAGS_DUAL_LANE             BIT(5)
 131 #define ICM_FLAGS_SPEED_GEN3            BIT(7)
 132 #define ICM_FLAGS_WRITE                 BIT(7)
 133
 134 struct icm_pkg_driver_ready {
 135         struct icm_pkg_header hdr;
 136 };
 137
 138 /* Falcon Ridge only messages */
 139
 140 struct icm_fr_pkg_driver_ready_response {
 141         struct icm_pkg_header hdr;
 142         u8 romver;
 143         u8 ramver;
 144         u16 security_level;
 145 };
 146
 147 #define ICM_FR_SLEVEL_MASK              0xf
 148
 149 /* Falcon Ridge & Alpine Ridge common messages */
 150
 151 struct icm_fr_pkg_get_topology {
 152         struct icm_pkg_header hdr;
 153 };
 154
 155 #define ICM_GET_TOPOLOGY_PACKETS        14
 156
 157 struct icm_fr_pkg_get_topology_response {
 158         struct icm_pkg_header hdr;
 159         u32 route_lo;
 160         u32 route_hi;
 161         u8 first_data;
 162         u8 second_data;
 163         u8 drom_i2c_address_index;
 164         u8 switch_index;
 165         u32 reserved[2];
 166         u32 ports[16];
 167         u32 port_hop_info[16];
 168 };
 169
 170 #define ICM_SWITCH_USED                 BIT(0)
 171 #define ICM_SWITCH_UPSTREAM_PORT_MASK   GENMASK(7, 1)
 172 #define ICM_SWITCH_UPSTREAM_PORT_SHIFT  1
 173
 174 #define ICM_PORT_TYPE_MASK              GENMASK(23, 0)
 175 #define ICM_PORT_INDEX_SHIFT            24
 176 #define ICM_PORT_INDEX_MASK             GENMASK(31, 24)
 177
 178 struct icm_fr_event_device_connected {
 179         struct icm_pkg_header hdr;
 180         uuid_t ep_uuid;
 181         u8 connection_key;
 182         u8 connection_id;
 183         u16 link_info;
 184         u32 ep_name[55];
 185 };
 186
 187 #define ICM_LINK_INFO_LINK_MASK         0x7
 188 #define ICM_LINK_INFO_DEPTH_SHIFT       4
 189 #define ICM_LINK_INFO_DEPTH_MASK        GENMASK(7, 4)
 190 #define ICM_LINK_INFO_APPROVED          BIT(8)
 191 #define ICM_LINK_INFO_REJECTED          BIT(9)
 192 #define ICM_LINK_INFO_BOOT              BIT(10)
 193
 194 struct icm_fr_pkg_approve_device {
 195         struct icm_pkg_header hdr;
 196         uuid_t ep_uuid;
 197         u8 connection_key;
 198         u8 connection_id;
 199         u16 reserved;
 200 };
 201
 202 struct icm_fr_event_device_disconnected {
 203         struct icm_pkg_header hdr;
 204         u16 reserved;
 205         u16 link_info;
 206 };
 207
 208 struct icm_fr_event_xdomain_connected {
 209         struct icm_pkg_header hdr;
 210         u16 reserved;
 211         u16 link_info;
 212         uuid_t remote_uuid;
 213         uuid_t local_uuid;
 214         u32 local_route_hi;
 215         u32 local_route_lo;
 216         u32 remote_route_hi;
 217         u32 remote_route_lo;
 218 };
 219
 220 struct icm_fr_event_xdomain_disconnected {
 221         struct icm_pkg_header hdr;
 222         u16 reserved;
 223         u16 link_info;
 224         uuid_t remote_uuid;
 225 };
 226
 227 struct icm_fr_pkg_add_device_key {
 228         struct icm_pkg_header hdr;
 229         uuid_t ep_uuid;
 230         u8 connection_key;
 231         u8 connection_id;
 232         u16 reserved;
 233         u32 key[8];
 234 };
 235
 236 struct icm_fr_pkg_add_device_key_response {
 237         struct icm_pkg_header hdr;
 238         uuid_t ep_uuid;
 239         u8 connection_key;
 240         u8 connection_id;
 241         u16 reserved;
 242 };
 243
 244 struct icm_fr_pkg_challenge_device {
 245         struct icm_pkg_header hdr;
 246         uuid_t ep_uuid;
 247         u8 connection_key;
 248         u8 connection_id;
 249         u16 reserved;
 250         u32 challenge[8];
 251 };
 252
 253 struct icm_fr_pkg_challenge_device_response {
 254         struct icm_pkg_header hdr;
 255         uuid_t ep_uuid;
 256         u8 connection_key;
 257         u8 connection_id;
 258         u16 reserved;
 259         u32 challenge[8];
 260         u32 response[8];
 261 };
 262
 263 struct icm_fr_pkg_approve_xdomain {
 264         struct icm_pkg_header hdr;
 265         u16 reserved;
 266         u16 link_info;
 267         uuid_t remote_uuid;
 268         u16 transmit_path;
 269         u16 transmit_ring;
 270         u16 receive_path;
 271         u16 receive_ring;
 272 };
 273
 274 struct icm_fr_pkg_approve_xdomain_response {
 275         struct icm_pkg_header hdr;
 276         u16 reserved;
 277         u16 link_info;
 278         uuid_t remote_uuid;
 279         u16 transmit_path;
 280         u16 transmit_ring;
 281         u16 receive_path;
 282         u16 receive_ring;
 283 };
 284
 285 /* Alpine Ridge only messages */
 286
 287 struct icm_ar_pkg_driver_ready_response {
 288         struct icm_pkg_header hdr;
 289         u8 romver;
 290         u8 ramver;
 291         u16 info;
 292 };
 293
 294 #define ICM_AR_FLAGS_RTD3               BIT(6)
 295
 296 #define ICM_AR_INFO_SLEVEL_MASK         GENMASK(3, 0)
 297 #define ICM_AR_INFO_BOOT_ACL_SHIFT      7
 298 #define ICM_AR_INFO_BOOT_ACL_MASK       GENMASK(11, 7)
 299 #define ICM_AR_INFO_BOOT_ACL_SUPPORTED  BIT(13)
 300
 301 struct icm_ar_pkg_get_route {
 302         struct icm_pkg_header hdr;
 303         u16 reserved;
 304         u16 link_info;
 305 };
 306
 307 struct icm_ar_pkg_get_route_response {
 308         struct icm_pkg_header hdr;
 309         u16 reserved;
 310         u16 link_info;
 311         u32 route_hi;
 312         u32 route_lo;
 313 };
 314
 315 struct icm_ar_boot_acl_entry {
 316         u32 uuid_lo;
 317         u32 uuid_hi;
 318 };
 319
 320 #define ICM_AR_PREBOOT_ACL_ENTRIES      16
 321
 322 struct icm_ar_pkg_preboot_acl {
 323         struct icm_pkg_header hdr;
 324         struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
 325 };
 326
 327 struct icm_ar_pkg_preboot_acl_response {
 328         struct icm_pkg_header hdr;
 329         struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
 330 };
 331
 332 /* Titan Ridge messages */
 333
 334 struct icm_tr_pkg_driver_ready_response {
 335         struct icm_pkg_header hdr;
 336         u16 reserved1;
 337         u16 info;
 338         u32 nvm_version;
 339         u16 device_id;
 340         u16 reserved2;
 341 };
 342
 343 #define ICM_TR_FLAGS_RTD3               BIT(6)
 344
 345 #define ICM_TR_INFO_SLEVEL_MASK         GENMASK(2, 0)
 346 #define ICM_TR_INFO_BOOT_ACL_SHIFT      7
 347 #define ICM_TR_INFO_BOOT_ACL_MASK       GENMASK(12, 7)
 348
 349 struct icm_tr_event_device_connected {
 350         struct icm_pkg_header hdr;
 351         uuid_t ep_uuid;
 352         u32 route_hi;
 353         u32 route_lo;
 354         u8 connection_id;
 355         u8 reserved;
 356         u16 link_info;
 357         u32 ep_name[55];
 358 };
 359
 360 struct icm_tr_event_device_disconnected {
 361         struct icm_pkg_header hdr;
 362         u32 route_hi;
 363         u32 route_lo;
 364 };
 365
 366 struct icm_tr_event_xdomain_connected {
 367         struct icm_pkg_header hdr;
 368         u16 reserved;
 369         u16 link_info;
 370         uuid_t remote_uuid;
 371         uuid_t local_uuid;
 372         u32 local_route_hi;
 373         u32 local_route_lo;
 374         u32 remote_route_hi;
 375         u32 remote_route_lo;
 376 };
 377
 378 struct icm_tr_event_xdomain_disconnected {
 379         struct icm_pkg_header hdr;
 380         u32 route_hi;
 381         u32 route_lo;
 382         uuid_t remote_uuid;
 383 };
 384
 385 struct icm_tr_pkg_approve_device {
 386         struct icm_pkg_header hdr;
 387         uuid_t ep_uuid;
 388         u32 route_hi;
 389         u32 route_lo;
 390         u8 connection_id;
 391         u8 reserved1[3];
 392 };
 393
 394 struct icm_tr_pkg_add_device_key {
 395         struct icm_pkg_header hdr;
 396         uuid_t ep_uuid;
 397         u32 route_hi;
 398         u32 route_lo;
 399         u8 connection_id;
 400         u8 reserved[3];
 401         u32 key[8];
 402 };
 403
 404 struct icm_tr_pkg_challenge_device {
 405         struct icm_pkg_header hdr;
 406         uuid_t ep_uuid;
 407         u32 route_hi;
 408         u32 route_lo;
 409         u8 connection_id;
 410         u8 reserved[3];
 411         u32 challenge[8];
 412 };
 413
 414 struct icm_tr_pkg_approve_xdomain {
 415         struct icm_pkg_header hdr;
 416         u32 route_hi;
 417         u32 route_lo;
 418         uuid_t remote_uuid;
 419         u16 transmit_path;
 420         u16 transmit_ring;
 421         u16 receive_path;
 422         u16 receive_ring;
 423 };
 424
 425 struct icm_tr_pkg_disconnect_xdomain {
 426         struct icm_pkg_header hdr;
 427         u8 stage;
 428         u8 reserved[3];
 429         u32 route_hi;
 430         u32 route_lo;
 431         uuid_t remote_uuid;
 432 };
 433
 434 struct icm_tr_pkg_challenge_device_response {
 435         struct icm_pkg_header hdr;
 436         uuid_t ep_uuid;
 437         u32 route_hi;
 438         u32 route_lo;
 439         u8 connection_id;
 440         u8 reserved[3];
 441         u32 challenge[8];
 442         u32 response[8];
 443 };
 444
 445 struct icm_tr_pkg_add_device_key_response {
 446         struct icm_pkg_header hdr;
 447         uuid_t ep_uuid;
 448         u32 route_hi;
 449         u32 route_lo;
 450         u8 connection_id;
 451         u8 reserved[3];
 452 };
 453
 454 struct icm_tr_pkg_approve_xdomain_response {
 455         struct icm_pkg_header hdr;
 456         u32 route_hi;
 457         u32 route_lo;
 458         uuid_t remote_uuid;
 459         u16 transmit_path;
 460         u16 transmit_ring;
 461         u16 receive_path;
 462         u16 receive_ring;
 463 };
 464
 465 struct icm_tr_pkg_disconnect_xdomain_response {
 466         struct icm_pkg_header hdr;
 467         u8 stage;
 468         u8 reserved[3];
 469         u32 route_hi;
 470         u32 route_lo;
 471         uuid_t remote_uuid;
 472 };
 473
 474 /* Ice Lake messages */
 475
 476 struct icm_icl_event_rtd3_veto {
 477         struct icm_pkg_header hdr;
 478         u32 veto_reason;
 479 };
 480
 481 /* XDomain messages */
 482
 483 struct tb_xdomain_header {
 484         u32 route_hi;
 485         u32 route_lo;
 486         u32 length_sn;
 487 };
 488
 489 #define TB_XDOMAIN_LENGTH_MASK  GENMASK(5, 0)
 490 #define TB_XDOMAIN_SN_MASK      GENMASK(28, 27)
 491 #define TB_XDOMAIN_SN_SHIFT     27
 492
 493 enum tb_xdp_type {
 494         UUID_REQUEST_OLD = 1,
 495         UUID_RESPONSE = 2,
 496         PROPERTIES_REQUEST,
 497         PROPERTIES_RESPONSE,
 498         PROPERTIES_CHANGED_REQUEST,
 499         PROPERTIES_CHANGED_RESPONSE,
 500         ERROR_RESPONSE,
 501         UUID_REQUEST = 12,
 502 };
 503
 504 struct tb_xdp_header {
 505         struct tb_xdomain_header xd_hdr;
 506         uuid_t uuid;
 507         u32 type;
 508 };
 509
 510 struct tb_xdp_uuid {
 511         struct tb_xdp_header hdr;
 512 };
 513
 514 struct tb_xdp_uuid_response {
 515         struct tb_xdp_header hdr;
 516         uuid_t src_uuid;
 517         u32 src_route_hi;
 518         u32 src_route_lo;
 519 };
 520
 521 struct tb_xdp_properties {
 522         struct tb_xdp_header hdr;
 523         uuid_t src_uuid;
 524         uuid_t dst_uuid;
 525         u16 offset;
 526         u16 reserved;
 527 };
 528
 529 struct tb_xdp_properties_response {
 530         struct tb_xdp_header hdr;
 531         uuid_t src_uuid;
 532         uuid_t dst_uuid;
 533         u16 offset;
 534         u16 data_length;
 535         u32 generation;
 536         u32 data[0];
 537 };
 538
 539 /*
 540  * Max length of data array single XDomain property response is allowed
 541  * to carry.
 542  */
 543 #define TB_XDP_PROPERTIES_MAX_DATA_LENGTH       \
 544         (((256 - 4 - sizeof(struct tb_xdp_properties_response))) / 4)
 545
 546 /* Maximum size of the total property block in dwords we allow */
 547 #define TB_XDP_PROPERTIES_MAX_LENGTH            500
 548
 549 struct tb_xdp_properties_changed {
 550         struct tb_xdp_header hdr;
 551         uuid_t src_uuid;
 552 };
 553
 554 struct tb_xdp_properties_changed_response {
 555         struct tb_xdp_header hdr;
 556 };
 557
 558 enum tb_xdp_error {
 559         ERROR_SUCCESS,
 560         ERROR_UNKNOWN_PACKET,
 561         ERROR_UNKNOWN_DOMAIN,
 562         ERROR_NOT_SUPPORTED,
 563         ERROR_NOT_READY,
 564 };
 565
 566 struct tb_xdp_error_response {
 567         struct tb_xdp_header hdr;
 568         u32 error;
 569 };
 570
 571 #endif