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 zero3:14;
  71         u32 pg:2;
  72 } __packed;
  73
  74 #define TB_CFG_ERROR_PG_HOT_PLUG        0x2
  75 #define TB_CFG_ERROR_PG_HOT_UNPLUG      0x3
  76
  77 /* TB_CFG_PKG_EVENT */
  78 struct cfg_event_pkg {
  79         struct tb_cfg_header header;
  80         u32 port:6;
  81         u32 zero:25;
  82         bool unplug:1;
  83 } __packed;
  84
  85 /* TB_CFG_PKG_RESET */
  86 struct cfg_reset_pkg {
  87         struct tb_cfg_header header;
  88 } __packed;
  89
  90 /* TB_CFG_PKG_PREPARE_TO_SLEEP */
  91 struct cfg_pts_pkg {
  92         struct tb_cfg_header header;
  93         u32 data;
  94 } __packed;
  95
  96 /* ICM messages */
  97
  98 enum icm_pkg_code {
  99         ICM_GET_TOPOLOGY = 0x1,
 100         ICM_DRIVER_READY = 0x3,
 101         ICM_APPROVE_DEVICE = 0x4,
 102         ICM_CHALLENGE_DEVICE = 0x5,
 103         ICM_ADD_DEVICE_KEY = 0x6,
 104         ICM_GET_ROUTE = 0xa,
 105         ICM_APPROVE_XDOMAIN = 0x10,
 106         ICM_DISCONNECT_XDOMAIN = 0x11,
 107         ICM_PREBOOT_ACL = 0x18,
 108 };
 109
 110 enum icm_event_code {
 111         ICM_EVENT_DEVICE_CONNECTED = 0x3,
 112         ICM_EVENT_DEVICE_DISCONNECTED = 0x4,
 113         ICM_EVENT_XDOMAIN_CONNECTED = 0x6,
 114         ICM_EVENT_XDOMAIN_DISCONNECTED = 0x7,
 115         ICM_EVENT_RTD3_VETO = 0xa,
 116 };
 117
 118 struct icm_pkg_header {
 119         u8 code;
 120         u8 flags;
 121         u8 packet_id;
 122         u8 total_packets;
 123 };
 124
 125 #define ICM_FLAGS_ERROR                 BIT(0)
 126 #define ICM_FLAGS_NO_KEY                BIT(1)
 127 #define ICM_FLAGS_SLEVEL_SHIFT          3
 128 #define ICM_FLAGS_SLEVEL_MASK           GENMASK(4, 3)
 129 #define ICM_FLAGS_DUAL_LANE             BIT(5)
 130 #define ICM_FLAGS_SPEED_GEN3            BIT(7)
 131 #define ICM_FLAGS_WRITE                 BIT(7)
 132
 133 struct icm_pkg_driver_ready {
 134         struct icm_pkg_header hdr;
 135 };
 136
 137 /* Falcon Ridge only messages */
 138
 139 struct icm_fr_pkg_driver_ready_response {
 140         struct icm_pkg_header hdr;
 141         u8 romver;
 142         u8 ramver;
 143         u16 security_level;
 144 };
 145
 146 #define ICM_FR_SLEVEL_MASK              0xf
 147
 148 /* Falcon Ridge & Alpine Ridge common messages */
 149
 150 struct icm_fr_pkg_get_topology {
 151         struct icm_pkg_header hdr;
 152 };
 153
 154 #define ICM_GET_TOPOLOGY_PACKETS        14
 155
 156 struct icm_fr_pkg_get_topology_response {
 157         struct icm_pkg_header hdr;
 158         u32 route_lo;
 159         u32 route_hi;
 160         u8 first_data;
 161         u8 second_data;
 162         u8 drom_i2c_address_index;
 163         u8 switch_index;
 164         u32 reserved[2];
 165         u32 ports[16];
 166         u32 port_hop_info[16];
 167 };
 168
 169 #define ICM_SWITCH_USED                 BIT(0)
 170 #define ICM_SWITCH_UPSTREAM_PORT_MASK   GENMASK(7, 1)
 171 #define ICM_SWITCH_UPSTREAM_PORT_SHIFT  1
 172
 173 #define ICM_PORT_TYPE_MASK              GENMASK(23, 0)
 174 #define ICM_PORT_INDEX_SHIFT            24
 175 #define ICM_PORT_INDEX_MASK             GENMASK(31, 24)
 176
 177 struct icm_fr_event_device_connected {
 178         struct icm_pkg_header hdr;
 179         uuid_t ep_uuid;
 180         u8 connection_key;
 181         u8 connection_id;
 182         u16 link_info;
 183         u32 ep_name[55];
 184 };
 185
 186 #define ICM_LINK_INFO_LINK_MASK         0x7
 187 #define ICM_LINK_INFO_DEPTH_SHIFT       4
 188 #define ICM_LINK_INFO_DEPTH_MASK        GENMASK(7, 4)
 189 #define ICM_LINK_INFO_APPROVED          BIT(8)
 190 #define ICM_LINK_INFO_REJECTED          BIT(9)
 191 #define ICM_LINK_INFO_BOOT              BIT(10)
 192
 193 struct icm_fr_pkg_approve_device {
 194         struct icm_pkg_header hdr;
 195         uuid_t ep_uuid;
 196         u8 connection_key;
 197         u8 connection_id;
 198         u16 reserved;
 199 };
 200
 201 struct icm_fr_event_device_disconnected {
 202         struct icm_pkg_header hdr;
 203         u16 reserved;
 204         u16 link_info;
 205 };
 206
 207 struct icm_fr_event_xdomain_connected {
 208         struct icm_pkg_header hdr;
 209         u16 reserved;
 210         u16 link_info;
 211         uuid_t remote_uuid;
 212         uuid_t local_uuid;
 213         u32 local_route_hi;
 214         u32 local_route_lo;
 215         u32 remote_route_hi;
 216         u32 remote_route_lo;
 217 };
 218
 219 struct icm_fr_event_xdomain_disconnected {
 220         struct icm_pkg_header hdr;
 221         u16 reserved;
 222         u16 link_info;
 223         uuid_t remote_uuid;
 224 };
 225
 226 struct icm_fr_pkg_add_device_key {
 227         struct icm_pkg_header hdr;
 228         uuid_t ep_uuid;
 229         u8 connection_key;
 230         u8 connection_id;
 231         u16 reserved;
 232         u32 key[8];
 233 };
 234
 235 struct icm_fr_pkg_add_device_key_response {
 236         struct icm_pkg_header hdr;
 237         uuid_t ep_uuid;
 238         u8 connection_key;
 239         u8 connection_id;
 240         u16 reserved;
 241 };
 242
 243 struct icm_fr_pkg_challenge_device {
 244         struct icm_pkg_header hdr;
 245         uuid_t ep_uuid;
 246         u8 connection_key;
 247         u8 connection_id;
 248         u16 reserved;
 249         u32 challenge[8];
 250 };
 251
 252 struct icm_fr_pkg_challenge_device_response {
 253         struct icm_pkg_header hdr;
 254         uuid_t ep_uuid;
 255         u8 connection_key;
 256         u8 connection_id;
 257         u16 reserved;
 258         u32 challenge[8];
 259         u32 response[8];
 260 };
 261
 262 struct icm_fr_pkg_approve_xdomain {
 263         struct icm_pkg_header hdr;
 264         u16 reserved;
 265         u16 link_info;
 266         uuid_t remote_uuid;
 267         u16 transmit_path;
 268         u16 transmit_ring;
 269         u16 receive_path;
 270         u16 receive_ring;
 271 };
 272
 273 struct icm_fr_pkg_approve_xdomain_response {
 274         struct icm_pkg_header hdr;
 275         u16 reserved;
 276         u16 link_info;
 277         uuid_t remote_uuid;
 278         u16 transmit_path;
 279         u16 transmit_ring;
 280         u16 receive_path;
 281         u16 receive_ring;
 282 };
 283
 284 /* Alpine Ridge only messages */
 285
 286 struct icm_ar_pkg_driver_ready_response {
 287         struct icm_pkg_header hdr;
 288         u8 romver;
 289         u8 ramver;
 290         u16 info;
 291 };
 292
 293 #define ICM_AR_FLAGS_RTD3               BIT(6)
 294
 295 #define ICM_AR_INFO_SLEVEL_MASK         GENMASK(3, 0)
 296 #define ICM_AR_INFO_BOOT_ACL_SHIFT      7
 297 #define ICM_AR_INFO_BOOT_ACL_MASK       GENMASK(11, 7)
 298 #define ICM_AR_INFO_BOOT_ACL_SUPPORTED  BIT(13)
 299
 300 struct icm_ar_pkg_get_route {
 301         struct icm_pkg_header hdr;
 302         u16 reserved;
 303         u16 link_info;
 304 };
 305
 306 struct icm_ar_pkg_get_route_response {
 307         struct icm_pkg_header hdr;
 308         u16 reserved;
 309         u16 link_info;
 310         u32 route_hi;
 311         u32 route_lo;
 312 };
 313
 314 struct icm_ar_boot_acl_entry {
 315         u32 uuid_lo;
 316         u32 uuid_hi;
 317 };
 318
 319 #define ICM_AR_PREBOOT_ACL_ENTRIES      16
 320
 321 struct icm_ar_pkg_preboot_acl {
 322         struct icm_pkg_header hdr;
 323         struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
 324 };
 325
 326 struct icm_ar_pkg_preboot_acl_response {
 327         struct icm_pkg_header hdr;
 328         struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
 329 };
 330
 331 /* Titan Ridge messages */
 332
 333 struct icm_tr_pkg_driver_ready_response {
 334         struct icm_pkg_header hdr;
 335         u16 reserved1;
 336         u16 info;
 337         u32 nvm_version;
 338         u16 device_id;
 339         u16 reserved2;
 340 };
 341
 342 #define ICM_TR_FLAGS_RTD3               BIT(6)
 343
 344 #define ICM_TR_INFO_SLEVEL_MASK         GENMASK(2, 0)
 345 #define ICM_TR_INFO_BOOT_ACL_SHIFT      7
 346 #define ICM_TR_INFO_BOOT_ACL_MASK       GENMASK(12, 7)
 347
 348 struct icm_tr_event_device_connected {
 349         struct icm_pkg_header hdr;
 350         uuid_t ep_uuid;
 351         u32 route_hi;
 352         u32 route_lo;
 353         u8 connection_id;
 354         u8 reserved;
 355         u16 link_info;
 356         u32 ep_name[55];
 357 };
 358
 359 struct icm_tr_event_device_disconnected {
 360         struct icm_pkg_header hdr;
 361         u32 route_hi;
 362         u32 route_lo;
 363 };
 364
 365 struct icm_tr_event_xdomain_connected {
 366         struct icm_pkg_header hdr;
 367         u16 reserved;
 368         u16 link_info;
 369         uuid_t remote_uuid;
 370         uuid_t local_uuid;
 371         u32 local_route_hi;
 372         u32 local_route_lo;
 373         u32 remote_route_hi;
 374         u32 remote_route_lo;
 375 };
 376
 377 struct icm_tr_event_xdomain_disconnected {
 378         struct icm_pkg_header hdr;
 379         u32 route_hi;
 380         u32 route_lo;
 381         uuid_t remote_uuid;
 382 };
 383
 384 struct icm_tr_pkg_approve_device {
 385         struct icm_pkg_header hdr;
 386         uuid_t ep_uuid;
 387         u32 route_hi;
 388         u32 route_lo;
 389         u8 connection_id;
 390         u8 reserved1[3];
 391 };
 392
 393 struct icm_tr_pkg_add_device_key {
 394         struct icm_pkg_header hdr;
 395         uuid_t ep_uuid;
 396         u32 route_hi;
 397         u32 route_lo;
 398         u8 connection_id;
 399         u8 reserved[3];
 400         u32 key[8];
 401 };
 402
 403 struct icm_tr_pkg_challenge_device {
 404         struct icm_pkg_header hdr;
 405         uuid_t ep_uuid;
 406         u32 route_hi;
 407         u32 route_lo;
 408         u8 connection_id;
 409         u8 reserved[3];
 410         u32 challenge[8];
 411 };
 412
 413 struct icm_tr_pkg_approve_xdomain {
 414         struct icm_pkg_header hdr;
 415         u32 route_hi;
 416         u32 route_lo;
 417         uuid_t remote_uuid;
 418         u16 transmit_path;
 419         u16 transmit_ring;
 420         u16 receive_path;
 421         u16 receive_ring;
 422 };
 423
 424 struct icm_tr_pkg_disconnect_xdomain {
 425         struct icm_pkg_header hdr;
 426         u8 stage;
 427         u8 reserved[3];
 428         u32 route_hi;
 429         u32 route_lo;
 430         uuid_t remote_uuid;
 431 };
 432
 433 struct icm_tr_pkg_challenge_device_response {
 434         struct icm_pkg_header hdr;
 435         uuid_t ep_uuid;
 436         u32 route_hi;
 437         u32 route_lo;
 438         u8 connection_id;
 439         u8 reserved[3];
 440         u32 challenge[8];
 441         u32 response[8];
 442 };
 443
 444 struct icm_tr_pkg_add_device_key_response {
 445         struct icm_pkg_header hdr;
 446         uuid_t ep_uuid;
 447         u32 route_hi;
 448         u32 route_lo;
 449         u8 connection_id;
 450         u8 reserved[3];
 451 };
 452
 453 struct icm_tr_pkg_approve_xdomain_response {
 454         struct icm_pkg_header hdr;
 455         u32 route_hi;
 456         u32 route_lo;
 457         uuid_t remote_uuid;
 458         u16 transmit_path;
 459         u16 transmit_ring;
 460         u16 receive_path;
 461         u16 receive_ring;
 462 };
 463
 464 struct icm_tr_pkg_disconnect_xdomain_response {
 465         struct icm_pkg_header hdr;
 466         u8 stage;
 467         u8 reserved[3];
 468         u32 route_hi;
 469         u32 route_lo;
 470         uuid_t remote_uuid;
 471 };
 472
 473 /* Ice Lake messages */
 474
 475 struct icm_icl_event_rtd3_veto {
 476         struct icm_pkg_header hdr;
 477         u32 veto_reason;
 478 };
 479
 480 /* XDomain messages */
 481
 482 struct tb_xdomain_header {
 483         u32 route_hi;
 484         u32 route_lo;
 485         u32 length_sn;
 486 };
 487
 488 #define TB_XDOMAIN_LENGTH_MASK  GENMASK(5, 0)
 489 #define TB_XDOMAIN_SN_MASK      GENMASK(28, 27)
 490 #define TB_XDOMAIN_SN_SHIFT     27
 491
 492 enum tb_xdp_type {
 493         UUID_REQUEST_OLD = 1,
 494         UUID_RESPONSE = 2,
 495         PROPERTIES_REQUEST,
 496         PROPERTIES_RESPONSE,
 497         PROPERTIES_CHANGED_REQUEST,
 498         PROPERTIES_CHANGED_RESPONSE,
 499         ERROR_RESPONSE,
 500         UUID_REQUEST = 12,
 501 };
 502
 503 struct tb_xdp_header {
 504         struct tb_xdomain_header xd_hdr;
 505         uuid_t uuid;
 506         u32 type;
 507 };
 508
 509 struct tb_xdp_uuid {
 510         struct tb_xdp_header hdr;
 511 };
 512
 513 struct tb_xdp_uuid_response {
 514         struct tb_xdp_header hdr;
 515         uuid_t src_uuid;
 516         u32 src_route_hi;
 517         u32 src_route_lo;
 518 };
 519
 520 struct tb_xdp_properties {
 521         struct tb_xdp_header hdr;
 522         uuid_t src_uuid;
 523         uuid_t dst_uuid;
 524         u16 offset;
 525         u16 reserved;
 526 };
 527
 528 struct tb_xdp_properties_response {
 529         struct tb_xdp_header hdr;
 530         uuid_t src_uuid;
 531         uuid_t dst_uuid;
 532         u16 offset;
 533         u16 data_length;
 534         u32 generation;
 535         u32 data[0];
 536 };
 537
 538 /*
 539  * Max length of data array single XDomain property response is allowed
 540  * to carry.
 541  */
 542 #define TB_XDP_PROPERTIES_MAX_DATA_LENGTH       \
 543         (((256 - 4 - sizeof(struct tb_xdp_properties_response))) / 4)
 544
 545 /* Maximum size of the total property block in dwords we allow */
 546 #define TB_XDP_PROPERTIES_MAX_LENGTH            500
 547
 548 struct tb_xdp_properties_changed {
 549         struct tb_xdp_header hdr;
 550         uuid_t src_uuid;
 551 };
 552
 553 struct tb_xdp_properties_changed_response {
 554         struct tb_xdp_header hdr;
 555 };
 556
 557 enum tb_xdp_error {
 558         ERROR_SUCCESS,
 559         ERROR_UNKNOWN_PACKET,
 560         ERROR_UNKNOWN_DOMAIN,
 561         ERROR_NOT_SUPPORTED,
 562         ERROR_NOT_READY,
 563 };
 564
 565 struct tb_xdp_error_response {
 566         struct tb_xdp_header hdr;
 567         u32 error;
 568 };
 569
 570 #endif