1 /* $NetBSD: amdgpu_hdcp2_transition.c,v 1.2 2021/12/18 23:45:07 riastradh Exp $ */ 2 3 /* 4 * Copyright 2018 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: AMD 25 * 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: amdgpu_hdcp2_transition.c,v 1.2 2021/12/18 23:45:07 riastradh Exp $"); 30 31 #include "hdcp.h" 32 33 enum mod_hdcp_status mod_hdcp_hdcp2_transition(struct mod_hdcp *hdcp, 34 struct mod_hdcp_event_context *event_ctx, 35 struct mod_hdcp_transition_input_hdcp2 *input, 36 struct mod_hdcp_output *output) 37 { 38 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; 39 struct mod_hdcp_connection *conn = &hdcp->connection; 40 struct mod_hdcp_link_adjustment *adjust = &hdcp->connection.link.adjust; 41 42 switch (current_state(hdcp)) { 43 case H2_A0_KNOWN_HDCP2_CAPABLE_RX: 44 if (input->hdcp2version_read != PASS || 45 input->hdcp2_capable_check != PASS) { 46 adjust->hdcp2.disable = 1; 47 callback_in_ms(0, output); 48 set_state_id(hdcp, output, HDCP_INITIALIZED); 49 } else { 50 callback_in_ms(0, output); 51 set_state_id(hdcp, output, H2_A1_SEND_AKE_INIT); 52 } 53 break; 54 case H2_A1_SEND_AKE_INIT: 55 if (input->add_topology != PASS || 56 input->create_session != PASS || 57 input->ake_init_prepare != PASS) { 58 /* out of sync with psp state */ 59 adjust->hdcp2.disable = 1; 60 fail_and_restart_in_ms(0, &status, output); 61 break; 62 } else if (input->ake_init_write != PASS) { 63 fail_and_restart_in_ms(0, &status, output); 64 break; 65 } 66 set_watchdog_in_ms(hdcp, 100, output); 67 callback_in_ms(0, output); 68 set_state_id(hdcp, output, H2_A1_VALIDATE_AKE_CERT); 69 break; 70 case H2_A1_VALIDATE_AKE_CERT: 71 if (input->ake_cert_available != PASS) { 72 if (event_ctx->event == 73 MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { 74 /* 1A-08: consider ake timeout a failure */ 75 /* some hdmi receivers are not ready for HDCP 76 * immediately after video becomes active, 77 * delay 1s before retry on first HDCP message 78 * timeout. 79 */ 80 fail_and_restart_in_ms(1000, &status, output); 81 } else { 82 /* continue ake cert polling*/ 83 callback_in_ms(10, output); 84 increment_stay_counter(hdcp); 85 } 86 break; 87 } else if (input->ake_cert_read != PASS || 88 input->ake_cert_validation != PASS) { 89 /* 90 * 1A-09: consider invalid ake cert a failure 91 * 1A-10: consider receiver id listed in SRM a failure 92 */ 93 fail_and_restart_in_ms(0, &status, output); 94 break; 95 } 96 if (conn->is_km_stored && 97 !adjust->hdcp2.force_no_stored_km) { 98 callback_in_ms(0, output); 99 set_state_id(hdcp, output, H2_A1_SEND_STORED_KM); 100 } else { 101 callback_in_ms(0, output); 102 set_state_id(hdcp, output, H2_A1_SEND_NO_STORED_KM); 103 } 104 break; 105 case H2_A1_SEND_NO_STORED_KM: 106 if (input->no_stored_km_write != PASS) { 107 fail_and_restart_in_ms(0, &status, output); 108 break; 109 } 110 if (adjust->hdcp2.increase_h_prime_timeout) 111 set_watchdog_in_ms(hdcp, 2000, output); 112 else 113 set_watchdog_in_ms(hdcp, 1000, output); 114 callback_in_ms(0, output); 115 set_state_id(hdcp, output, H2_A1_READ_H_PRIME); 116 break; 117 case H2_A1_READ_H_PRIME: 118 if (input->h_prime_available != PASS) { 119 if (event_ctx->event == 120 MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { 121 /* 1A-11-3: consider h' timeout a failure */ 122 fail_and_restart_in_ms(1000, &status, output); 123 } else { 124 /* continue h' polling */ 125 callback_in_ms(100, output); 126 increment_stay_counter(hdcp); 127 } 128 break; 129 } else if (input->h_prime_read != PASS) { 130 fail_and_restart_in_ms(0, &status, output); 131 break; 132 } 133 set_watchdog_in_ms(hdcp, 200, output); 134 callback_in_ms(0, output); 135 set_state_id(hdcp, output, H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME); 136 break; 137 case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME: 138 if (input->pairing_available != PASS) { 139 if (event_ctx->event == 140 MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { 141 /* 1A-12: consider pairing info timeout 142 * a failure 143 */ 144 fail_and_restart_in_ms(0, &status, output); 145 } else { 146 /* continue pairing info polling */ 147 callback_in_ms(20, output); 148 increment_stay_counter(hdcp); 149 } 150 break; 151 } else if (input->pairing_info_read != PASS || 152 input->h_prime_validation != PASS) { 153 /* 1A-11-1: consider invalid h' a failure */ 154 fail_and_restart_in_ms(0, &status, output); 155 break; 156 } 157 callback_in_ms(0, output); 158 set_state_id(hdcp, output, H2_A2_LOCALITY_CHECK); 159 break; 160 case H2_A1_SEND_STORED_KM: 161 if (input->stored_km_write != PASS) { 162 fail_and_restart_in_ms(0, &status, output); 163 break; 164 } 165 set_watchdog_in_ms(hdcp, 200, output); 166 callback_in_ms(0, output); 167 set_state_id(hdcp, output, H2_A1_VALIDATE_H_PRIME); 168 break; 169 case H2_A1_VALIDATE_H_PRIME: 170 if (input->h_prime_available != PASS) { 171 if (event_ctx->event == 172 MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { 173 /* 1A-11-2: consider h' timeout a failure */ 174 fail_and_restart_in_ms(1000, &status, output); 175 } else { 176 /* continue h' polling */ 177 callback_in_ms(20, output); 178 increment_stay_counter(hdcp); 179 } 180 break; 181 } else if (input->h_prime_read != PASS) { 182 fail_and_restart_in_ms(0, &status, output); 183 break; 184 } else if (input->h_prime_validation != PASS) { 185 /* 1A-11-1: consider invalid h' a failure */ 186 adjust->hdcp2.force_no_stored_km = 1; 187 fail_and_restart_in_ms(0, &status, output); 188 break; 189 } 190 callback_in_ms(0, output); 191 set_state_id(hdcp, output, H2_A2_LOCALITY_CHECK); 192 break; 193 case H2_A2_LOCALITY_CHECK: 194 if (hdcp->state.stay_count > 10 || 195 input->lc_init_prepare != PASS || 196 input->lc_init_write != PASS || 197 input->l_prime_available_poll != PASS || 198 input->l_prime_read != PASS) { 199 /* 200 * 1A-05: consider disconnection after LC init a failure 201 * 1A-13-1: consider invalid l' a failure 202 * 1A-13-2: consider l' timeout a failure 203 */ 204 fail_and_restart_in_ms(0, &status, output); 205 break; 206 } else if (input->l_prime_validation != PASS) { 207 callback_in_ms(0, output); 208 increment_stay_counter(hdcp); 209 break; 210 } 211 callback_in_ms(0, output); 212 set_state_id(hdcp, output, H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER); 213 break; 214 case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER: 215 if (input->eks_prepare != PASS || 216 input->eks_write != PASS) { 217 fail_and_restart_in_ms(0, &status, output); 218 break; 219 } 220 if (conn->is_repeater) { 221 set_watchdog_in_ms(hdcp, 3000, output); 222 callback_in_ms(0, output); 223 set_state_id(hdcp, output, H2_A6_WAIT_FOR_RX_ID_LIST); 224 } else { 225 /* some CTS equipment requires a delay GREATER than 226 * 200 ms, so delay 210 ms instead of 200 ms 227 */ 228 callback_in_ms(210, output); 229 set_state_id(hdcp, output, H2_ENABLE_ENCRYPTION); 230 } 231 break; 232 case H2_ENABLE_ENCRYPTION: 233 if (input->rxstatus_read != PASS || 234 input->reauth_request_check != PASS) { 235 /* 236 * 1A-07: restart hdcp on REAUTH_REQ 237 * 1B-08: restart hdcp on REAUTH_REQ 238 */ 239 fail_and_restart_in_ms(0, &status, output); 240 break; 241 } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { 242 callback_in_ms(0, output); 243 set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); 244 break; 245 } else if (input->enable_encryption != PASS) { 246 fail_and_restart_in_ms(0, &status, output); 247 break; 248 } 249 callback_in_ms(0, output); 250 set_state_id(hdcp, output, H2_A5_AUTHENTICATED); 251 HDCP_FULL_DDC_TRACE(hdcp); 252 break; 253 case H2_A5_AUTHENTICATED: 254 if (input->rxstatus_read != PASS || 255 input->reauth_request_check != PASS) { 256 fail_and_restart_in_ms(0, &status, output); 257 break; 258 } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { 259 callback_in_ms(0, output); 260 set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); 261 break; 262 } 263 callback_in_ms(500, output); 264 increment_stay_counter(hdcp); 265 break; 266 case H2_A6_WAIT_FOR_RX_ID_LIST: 267 if (input->rxstatus_read != PASS || 268 input->reauth_request_check != PASS) { 269 fail_and_restart_in_ms(0, &status, output); 270 break; 271 } else if (!event_ctx->rx_id_list_ready) { 272 if (event_ctx->event == MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { 273 /* 1B-02: consider rx id list timeout a failure */ 274 /* some CTS equipment's actual timeout 275 * measurement is slightly greater than 3000 ms. 276 * Delay 100 ms to ensure it is fully timeout 277 * before re-authentication. 278 */ 279 fail_and_restart_in_ms(100, &status, output); 280 } else { 281 callback_in_ms(300, output); 282 increment_stay_counter(hdcp); 283 } 284 break; 285 } 286 callback_in_ms(0, output); 287 set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); 288 break; 289 case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK: 290 if (input->rxstatus_read != PASS || 291 input->reauth_request_check != PASS || 292 input->rx_id_list_read != PASS || 293 input->device_count_check != PASS || 294 input->rx_id_list_validation != PASS || 295 input->repeater_auth_ack_write != PASS) { 296 /* 1B-03: consider invalid v' a failure 297 * 1B-04: consider MAX_DEVS_EXCEEDED a failure 298 * 1B-05: consider MAX_CASCADE_EXCEEDED a failure 299 * 1B-06: consider invalid seq_num_V a failure 300 * 1B-09: consider seq_num_V rollover a failure 301 */ 302 fail_and_restart_in_ms(0, &status, output); 303 break; 304 } 305 callback_in_ms(0, output); 306 set_state_id(hdcp, output, H2_A9_SEND_STREAM_MANAGEMENT); 307 break; 308 case H2_A9_SEND_STREAM_MANAGEMENT: 309 if (input->rxstatus_read != PASS || 310 input->reauth_request_check != PASS) { 311 fail_and_restart_in_ms(0, &status, output); 312 break; 313 } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { 314 callback_in_ms(0, output); 315 set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); 316 break; 317 } else if (input->prepare_stream_manage != PASS || 318 input->stream_manage_write != PASS) { 319 fail_and_restart_in_ms(0, &status, output); 320 break; 321 } 322 set_watchdog_in_ms(hdcp, 100, output); 323 callback_in_ms(0, output); 324 set_state_id(hdcp, output, H2_A9_VALIDATE_STREAM_READY); 325 break; 326 case H2_A9_VALIDATE_STREAM_READY: 327 if (input->rxstatus_read != PASS || 328 input->reauth_request_check != PASS) { 329 fail_and_restart_in_ms(0, &status, output); 330 break; 331 } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { 332 callback_in_ms(0, output); 333 set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); 334 break; 335 } else if (input->stream_ready_available != PASS) { 336 if (event_ctx->event == MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { 337 /* 1B-10-2: restart content stream management on 338 * stream ready timeout 339 */ 340 hdcp->auth.count.stream_management_retry_count++; 341 callback_in_ms(0, output); 342 set_state_id(hdcp, output, H2_A9_SEND_STREAM_MANAGEMENT); 343 } else { 344 callback_in_ms(10, output); 345 increment_stay_counter(hdcp); 346 } 347 break; 348 } else if (input->stream_ready_read != PASS || 349 input->stream_ready_validation != PASS) { 350 /* 351 * 1B-10-1: restart content stream management 352 * on invalid M' 353 */ 354 if (hdcp->auth.count.stream_management_retry_count > 10) { 355 fail_and_restart_in_ms(0, &status, output); 356 } else { 357 hdcp->auth.count.stream_management_retry_count++; 358 callback_in_ms(0, output); 359 set_state_id(hdcp, output, H2_A9_SEND_STREAM_MANAGEMENT); 360 } 361 break; 362 } 363 callback_in_ms(200, output); 364 set_state_id(hdcp, output, H2_ENABLE_ENCRYPTION); 365 break; 366 default: 367 status = MOD_HDCP_STATUS_INVALID_STATE; 368 fail_and_restart_in_ms(0, &status, output); 369 break; 370 } 371 372 return status; 373 } 374 375 enum mod_hdcp_status mod_hdcp_hdcp2_dp_transition(struct mod_hdcp *hdcp, 376 struct mod_hdcp_event_context *event_ctx, 377 struct mod_hdcp_transition_input_hdcp2 *input, 378 struct mod_hdcp_output *output) 379 { 380 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; 381 struct mod_hdcp_connection *conn = &hdcp->connection; 382 struct mod_hdcp_link_adjustment *adjust = &hdcp->connection.link.adjust; 383 384 switch (current_state(hdcp)) { 385 case D2_A0_DETERMINE_RX_HDCP_CAPABLE: 386 if (input->rx_caps_read_dp != PASS || 387 input->hdcp2_capable_check != PASS) { 388 adjust->hdcp2.disable = 1; 389 callback_in_ms(0, output); 390 set_state_id(hdcp, output, HDCP_INITIALIZED); 391 } else { 392 callback_in_ms(0, output); 393 set_state_id(hdcp, output, D2_A1_SEND_AKE_INIT); 394 } 395 break; 396 case D2_A1_SEND_AKE_INIT: 397 if (input->add_topology != PASS || 398 input->create_session != PASS || 399 input->ake_init_prepare != PASS) { 400 /* out of sync with psp state */ 401 adjust->hdcp2.disable = 1; 402 fail_and_restart_in_ms(0, &status, output); 403 break; 404 } else if (input->ake_init_write != PASS) { 405 /* possibly display not ready */ 406 fail_and_restart_in_ms(0, &status, output); 407 break; 408 } 409 callback_in_ms(100, output); 410 set_state_id(hdcp, output, D2_A1_VALIDATE_AKE_CERT); 411 break; 412 case D2_A1_VALIDATE_AKE_CERT: 413 if (input->ake_cert_read != PASS || 414 input->ake_cert_validation != PASS) { 415 /* 416 * 1A-08: consider invalid ake cert a failure 417 * 1A-09: consider receiver id listed in SRM a failure 418 */ 419 fail_and_restart_in_ms(0, &status, output); 420 break; 421 } 422 if (conn->is_km_stored && 423 !adjust->hdcp2.force_no_stored_km) { 424 callback_in_ms(0, output); 425 set_state_id(hdcp, output, D2_A1_SEND_STORED_KM); 426 } else { 427 callback_in_ms(0, output); 428 set_state_id(hdcp, output, D2_A1_SEND_NO_STORED_KM); 429 } 430 break; 431 case D2_A1_SEND_NO_STORED_KM: 432 if (input->no_stored_km_write != PASS) { 433 fail_and_restart_in_ms(0, &status, output); 434 break; 435 } 436 if (adjust->hdcp2.increase_h_prime_timeout) 437 set_watchdog_in_ms(hdcp, 2000, output); 438 else 439 set_watchdog_in_ms(hdcp, 1000, output); 440 set_state_id(hdcp, output, D2_A1_READ_H_PRIME); 441 break; 442 case D2_A1_READ_H_PRIME: 443 if (input->h_prime_available != PASS) { 444 if (event_ctx->event == 445 MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) 446 /* 1A-10-3: consider h' timeout a failure */ 447 fail_and_restart_in_ms(1000, &status, output); 448 else 449 increment_stay_counter(hdcp); 450 break; 451 } else if (input->h_prime_read != PASS) { 452 fail_and_restart_in_ms(0, &status, output); 453 break; 454 } 455 set_watchdog_in_ms(hdcp, 200, output); 456 set_state_id(hdcp, output, D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME); 457 break; 458 case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME: 459 if (input->pairing_available != PASS) { 460 if (event_ctx->event == 461 MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) 462 /* 463 * 1A-11: consider pairing info timeout 464 * a failure 465 */ 466 fail_and_restart_in_ms(0, &status, output); 467 else 468 increment_stay_counter(hdcp); 469 break; 470 } else if (input->pairing_info_read != PASS || 471 input->h_prime_validation != PASS) { 472 /* 1A-10-1: consider invalid h' a failure */ 473 fail_and_restart_in_ms(0, &status, output); 474 break; 475 } 476 callback_in_ms(0, output); 477 set_state_id(hdcp, output, D2_A2_LOCALITY_CHECK); 478 break; 479 case D2_A1_SEND_STORED_KM: 480 if (input->stored_km_write != PASS) { 481 fail_and_restart_in_ms(0, &status, output); 482 break; 483 } 484 set_watchdog_in_ms(hdcp, 200, output); 485 set_state_id(hdcp, output, D2_A1_VALIDATE_H_PRIME); 486 break; 487 case D2_A1_VALIDATE_H_PRIME: 488 if (input->h_prime_available != PASS) { 489 if (event_ctx->event == 490 MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) 491 /* 1A-10-2: consider h' timeout a failure */ 492 fail_and_restart_in_ms(1000, &status, output); 493 else 494 increment_stay_counter(hdcp); 495 break; 496 } else if (input->h_prime_read != PASS) { 497 fail_and_restart_in_ms(0, &status, output); 498 break; 499 } else if (input->h_prime_validation != PASS) { 500 /* 1A-10-1: consider invalid h' a failure */ 501 adjust->hdcp2.force_no_stored_km = 1; 502 fail_and_restart_in_ms(0, &status, output); 503 break; 504 } 505 callback_in_ms(0, output); 506 set_state_id(hdcp, output, D2_A2_LOCALITY_CHECK); 507 break; 508 case D2_A2_LOCALITY_CHECK: 509 if (hdcp->state.stay_count > 10 || 510 input->lc_init_prepare != PASS || 511 input->lc_init_write != PASS || 512 input->l_prime_read != PASS) { 513 /* 1A-12: consider invalid l' a failure */ 514 fail_and_restart_in_ms(0, &status, output); 515 break; 516 } else if (input->l_prime_validation != PASS) { 517 callback_in_ms(0, output); 518 increment_stay_counter(hdcp); 519 break; 520 } 521 callback_in_ms(0, output); 522 set_state_id(hdcp, output, D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER); 523 break; 524 case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER: 525 if (input->eks_prepare != PASS || 526 input->eks_write != PASS) { 527 fail_and_restart_in_ms(0, &status, output); 528 break; 529 } 530 if (conn->is_repeater) { 531 set_watchdog_in_ms(hdcp, 3000, output); 532 set_state_id(hdcp, output, D2_A6_WAIT_FOR_RX_ID_LIST); 533 } else { 534 callback_in_ms(0, output); 535 set_state_id(hdcp, output, D2_SEND_CONTENT_STREAM_TYPE); 536 } 537 break; 538 case D2_SEND_CONTENT_STREAM_TYPE: 539 if (input->rxstatus_read != PASS || 540 input->reauth_request_check != PASS || 541 input->link_integrity_check_dp != PASS || 542 input->content_stream_type_write != PASS) { 543 fail_and_restart_in_ms(0, &status, output); 544 break; 545 } 546 callback_in_ms(210, output); 547 set_state_id(hdcp, output, D2_ENABLE_ENCRYPTION); 548 break; 549 case D2_ENABLE_ENCRYPTION: 550 if (input->rxstatus_read != PASS || 551 input->reauth_request_check != PASS || 552 input->link_integrity_check_dp != PASS) { 553 /* 554 * 1A-07: restart hdcp on REAUTH_REQ 555 * 1B-08: restart hdcp on REAUTH_REQ 556 */ 557 fail_and_restart_in_ms(0, &status, output); 558 break; 559 } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { 560 callback_in_ms(0, output); 561 set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); 562 break; 563 } else if (input->enable_encryption != PASS || 564 (is_dp_mst_hdcp(hdcp) && input->stream_encryption_dp != PASS)) { 565 fail_and_restart_in_ms(0, &status, output); 566 break; 567 } 568 set_state_id(hdcp, output, D2_A5_AUTHENTICATED); 569 HDCP_FULL_DDC_TRACE(hdcp); 570 break; 571 case D2_A5_AUTHENTICATED: 572 if (input->rxstatus_read != PASS || 573 input->reauth_request_check != PASS) { 574 fail_and_restart_in_ms(0, &status, output); 575 break; 576 } else if (input->link_integrity_check_dp != PASS) { 577 if (hdcp->connection.hdcp2_retry_count >= 1) 578 adjust->hdcp2.force_type = MOD_HDCP_FORCE_TYPE_0; 579 fail_and_restart_in_ms(0, &status, output); 580 break; 581 } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { 582 callback_in_ms(0, output); 583 set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); 584 break; 585 } 586 increment_stay_counter(hdcp); 587 break; 588 case D2_A6_WAIT_FOR_RX_ID_LIST: 589 if (input->rxstatus_read != PASS || 590 input->reauth_request_check != PASS || 591 input->link_integrity_check_dp != PASS) { 592 fail_and_restart_in_ms(0, &status, output); 593 break; 594 } else if (!event_ctx->rx_id_list_ready) { 595 if (event_ctx->event == MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) 596 /* 1B-02: consider rx id list timeout a failure */ 597 fail_and_restart_in_ms(0, &status, output); 598 else 599 increment_stay_counter(hdcp); 600 break; 601 } 602 callback_in_ms(0, output); 603 set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); 604 break; 605 case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK: 606 if (input->rxstatus_read != PASS || 607 input->reauth_request_check != PASS || 608 input->link_integrity_check_dp != PASS || 609 input->rx_id_list_read != PASS || 610 input->device_count_check != PASS || 611 input->rx_id_list_validation != PASS || 612 input->repeater_auth_ack_write != PASS) { 613 /* 614 * 1B-03: consider invalid v' a failure 615 * 1B-04: consider MAX_DEVS_EXCEEDED a failure 616 * 1B-05: consider MAX_CASCADE_EXCEEDED a failure 617 * 1B-06: consider invalid seq_num_V a failure 618 * 1B-09: consider seq_num_V rollover a failure 619 */ 620 fail_and_restart_in_ms(0, &status, output); 621 break; 622 } 623 callback_in_ms(0, output); 624 set_state_id(hdcp, output, D2_A9_SEND_STREAM_MANAGEMENT); 625 break; 626 case D2_A9_SEND_STREAM_MANAGEMENT: 627 if (input->rxstatus_read != PASS || 628 input->reauth_request_check != PASS || 629 input->link_integrity_check_dp != PASS) { 630 fail_and_restart_in_ms(0, &status, output); 631 break; 632 } else if (event_ctx->rx_id_list_ready) { 633 callback_in_ms(0, output); 634 set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); 635 break; 636 } else if (input->prepare_stream_manage != PASS || 637 input->stream_manage_write != PASS) { 638 if (event_ctx->event == MOD_HDCP_EVENT_CALLBACK) 639 fail_and_restart_in_ms(0, &status, output); 640 else 641 increment_stay_counter(hdcp); 642 break; 643 } 644 callback_in_ms(100, output); 645 set_state_id(hdcp, output, D2_A9_VALIDATE_STREAM_READY); 646 break; 647 case D2_A9_VALIDATE_STREAM_READY: 648 if (input->rxstatus_read != PASS || 649 input->reauth_request_check != PASS || 650 input->link_integrity_check_dp != PASS) { 651 fail_and_restart_in_ms(0, &status, output); 652 break; 653 } else if (event_ctx->rx_id_list_ready) { 654 callback_in_ms(0, output); 655 set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); 656 break; 657 } else if (input->stream_ready_read != PASS || 658 input->stream_ready_validation != PASS) { 659 /* 660 * 1B-10-1: restart content stream management 661 * on invalid M' 662 * 1B-10-2: consider stream ready timeout a failure 663 */ 664 if (hdcp->auth.count.stream_management_retry_count > 10) { 665 fail_and_restart_in_ms(0, &status, output); 666 } else if (event_ctx->event == MOD_HDCP_EVENT_CALLBACK) { 667 hdcp->auth.count.stream_management_retry_count++; 668 callback_in_ms(0, output); 669 set_state_id(hdcp, output, D2_A9_SEND_STREAM_MANAGEMENT); 670 } else { 671 increment_stay_counter(hdcp); 672 } 673 break; 674 } 675 callback_in_ms(200, output); 676 set_state_id(hdcp, output, D2_ENABLE_ENCRYPTION); 677 break; 678 default: 679 status = MOD_HDCP_STATUS_INVALID_STATE; 680 fail_and_restart_in_ms(0, &status, output); 681 break; 682 } 683 return status; 684 } 685
Indexes created Sun Sep 21 18:09:52 GMT 2025