diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c | 679 |
1 files changed, 679 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c new file mode 100644 index 000000000000..8cae3e3aacd5 --- /dev/null +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c @@ -0,0 +1,679 @@ +/* + * Copyright 2018 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: AMD + * + */ + +#include "hdcp.h" + +enum mod_hdcp_status mod_hdcp_hdcp2_transition(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input, + struct mod_hdcp_output *output) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + struct mod_hdcp_connection *conn = &hdcp->connection; + struct mod_hdcp_link_adjustment *adjust = &hdcp->connection.link.adjust; + + switch (current_state(hdcp)) { + case H2_A0_KNOWN_HDCP2_CAPABLE_RX: + if (input->hdcp2version_read != PASS || + input->hdcp2_capable_check != PASS) { + adjust->hdcp2.disable = 1; + callback_in_ms(0, output); + set_state_id(hdcp, output, HDCP_INITIALIZED); + } else { + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A1_SEND_AKE_INIT); + } + break; + case H2_A1_SEND_AKE_INIT: + if (input->add_topology != PASS || + input->create_session != PASS || + input->ake_init_prepare != PASS) { + /* out of sync with psp state */ + adjust->hdcp2.disable = 1; + fail_and_restart_in_ms(0, &status, output); + break; + } else if (input->ake_init_write != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + set_watchdog_in_ms(hdcp, 100, output); + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A1_VALIDATE_AKE_CERT); + break; + case H2_A1_VALIDATE_AKE_CERT: + if (input->ake_cert_available != PASS) { + if (event_ctx->event == + MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + /* 1A-08: consider ake timeout a failure */ + /* some hdmi receivers are not ready for HDCP + * immediately after video becomes active, + * delay 1s before retry on first HDCP message + * timeout. + */ + fail_and_restart_in_ms(1000, &status, output); + } else { + /* continue ake cert polling*/ + callback_in_ms(10, output); + increment_stay_counter(hdcp); + } + break; + } else if (input->ake_cert_read != PASS || + input->ake_cert_validation != PASS) { + /* + * 1A-09: consider invalid ake cert a failure + * 1A-10: consider receiver id listed in SRM a failure + */ + fail_and_restart_in_ms(0, &status, output); + break; + } + if (conn->is_km_stored && + !adjust->hdcp2.force_no_stored_km) { + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A1_SEND_STORED_KM); + } else { + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A1_SEND_NO_STORED_KM); + } + break; + case H2_A1_SEND_NO_STORED_KM: + if (input->no_stored_km_write != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + if (adjust->hdcp2.increase_h_prime_timeout) + set_watchdog_in_ms(hdcp, 2000, output); + else + set_watchdog_in_ms(hdcp, 1000, output); + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A1_READ_H_PRIME); + break; + case H2_A1_READ_H_PRIME: + if (input->h_prime_available != PASS) { + if (event_ctx->event == + MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + /* 1A-11-3: consider h' timeout a failure */ + fail_and_restart_in_ms(1000, &status, output); + } else { + /* continue h' polling */ + callback_in_ms(100, output); + increment_stay_counter(hdcp); + } + break; + } else if (input->h_prime_read != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + set_watchdog_in_ms(hdcp, 200, output); + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME); + break; + case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME: + if (input->pairing_available != PASS) { + if (event_ctx->event == + MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + /* 1A-12: consider pairing info timeout + * a failure + */ + fail_and_restart_in_ms(0, &status, output); + } else { + /* continue pairing info polling */ + callback_in_ms(20, output); + increment_stay_counter(hdcp); + } + break; + } else if (input->pairing_info_read != PASS || + input->h_prime_validation != PASS) { + /* 1A-11-1: consider invalid h' a failure */ + fail_and_restart_in_ms(0, &status, output); + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A2_LOCALITY_CHECK); + break; + case H2_A1_SEND_STORED_KM: + if (input->stored_km_write != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + set_watchdog_in_ms(hdcp, 200, output); + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A1_VALIDATE_H_PRIME); + break; + case H2_A1_VALIDATE_H_PRIME: + if (input->h_prime_available != PASS) { + if (event_ctx->event == + MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + /* 1A-11-2: consider h' timeout a failure */ + fail_and_restart_in_ms(1000, &status, output); + } else { + /* continue h' polling */ + callback_in_ms(20, output); + increment_stay_counter(hdcp); + } + break; + } else if (input->h_prime_read != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } else if (input->h_prime_validation != PASS) { + /* 1A-11-1: consider invalid h' a failure */ + adjust->hdcp2.force_no_stored_km = 1; + fail_and_restart_in_ms(0, &status, output); + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A2_LOCALITY_CHECK); + break; + case H2_A2_LOCALITY_CHECK: + if (hdcp->state.stay_count > 10 || + input->lc_init_prepare != PASS || + input->lc_init_write != PASS || + input->l_prime_available_poll != PASS || + input->l_prime_read != PASS) { + /* + * 1A-05: consider disconnection after LC init a failure + * 1A-13-1: consider invalid l' a failure + * 1A-13-2: consider l' timeout a failure + */ + fail_and_restart_in_ms(0, &status, output); + break; + } else if (input->l_prime_validation != PASS) { + callback_in_ms(0, output); + increment_stay_counter(hdcp); + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER); + break; + case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER: + if (input->eks_prepare != PASS || + input->eks_write != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + if (conn->is_repeater) { + set_watchdog_in_ms(hdcp, 3000, output); + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A6_WAIT_FOR_RX_ID_LIST); + } else { + /* some CTS equipment requires a delay GREATER than + * 200 ms, so delay 210 ms instead of 200 ms + */ + callback_in_ms(210, output); + set_state_id(hdcp, output, H2_ENABLE_ENCRYPTION); + } + break; + case H2_ENABLE_ENCRYPTION: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS) { + /* + * 1A-07: restart hdcp on REAUTH_REQ + * 1B-08: restart hdcp on REAUTH_REQ + */ + fail_and_restart_in_ms(0, &status, output); + break; + } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); + break; + } else if (input->enable_encryption != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A5_AUTHENTICATED); + HDCP_FULL_DDC_TRACE(hdcp); + break; + case H2_A5_AUTHENTICATED: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); + break; + } + callback_in_ms(500, output); + increment_stay_counter(hdcp); + break; + case H2_A6_WAIT_FOR_RX_ID_LIST: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } else if (!event_ctx->rx_id_list_ready) { + if (event_ctx->event == MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + /* 1B-02: consider rx id list timeout a failure */ + /* some CTS equipment's actual timeout + * measurement is slightly greater than 3000 ms. + * Delay 100 ms to ensure it is fully timeout + * before re-authentication. + */ + fail_and_restart_in_ms(100, &status, output); + } else { + callback_in_ms(300, output); + increment_stay_counter(hdcp); + } + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); + break; + case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS || + input->rx_id_list_read != PASS || + input->device_count_check != PASS || + input->rx_id_list_validation != PASS || + input->repeater_auth_ack_write != PASS) { + /* 1B-03: consider invalid v' a failure + * 1B-04: consider MAX_DEVS_EXCEEDED a failure + * 1B-05: consider MAX_CASCADE_EXCEEDED a failure + * 1B-06: consider invalid seq_num_V a failure + * 1B-09: consider seq_num_V rollover a failure + */ + fail_and_restart_in_ms(0, &status, output); + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A9_SEND_STREAM_MANAGEMENT); + break; + case H2_A9_SEND_STREAM_MANAGEMENT: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); + break; + } else if (input->prepare_stream_manage != PASS || + input->stream_manage_write != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + set_watchdog_in_ms(hdcp, 100, output); + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A9_VALIDATE_STREAM_READY); + break; + case H2_A9_VALIDATE_STREAM_READY: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); + break; + } else if (input->stream_ready_available != PASS) { + if (event_ctx->event == MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + /* 1B-10-2: restart content stream management on + * stream ready timeout + */ + hdcp->auth.count.stream_management_retry_count++; + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A9_SEND_STREAM_MANAGEMENT); + } else { + callback_in_ms(10, output); + increment_stay_counter(hdcp); + } + break; + } else if (input->stream_ready_read != PASS || + input->stream_ready_validation != PASS) { + /* + * 1B-10-1: restart content stream management + * on invalid M' + */ + if (hdcp->auth.count.stream_management_retry_count > 10) { + fail_and_restart_in_ms(0, &status, output); + } else { + hdcp->auth.count.stream_management_retry_count++; + callback_in_ms(0, output); + set_state_id(hdcp, output, H2_A9_SEND_STREAM_MANAGEMENT); + } + break; + } + callback_in_ms(200, output); + set_state_id(hdcp, output, H2_ENABLE_ENCRYPTION); + break; + default: + status = MOD_HDCP_STATUS_INVALID_STATE; + fail_and_restart_in_ms(0, &status, output); + break; + } + + return status; +} + +enum mod_hdcp_status mod_hdcp_hdcp2_dp_transition(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input, + struct mod_hdcp_output *output) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + struct mod_hdcp_connection *conn = &hdcp->connection; + struct mod_hdcp_link_adjustment *adjust = &hdcp->connection.link.adjust; + + switch (current_state(hdcp)) { + case D2_A0_DETERMINE_RX_HDCP_CAPABLE: + if (input->rx_caps_read_dp != PASS || + input->hdcp2_capable_check != PASS) { + adjust->hdcp2.disable = 1; + callback_in_ms(0, output); + set_state_id(hdcp, output, HDCP_INITIALIZED); + } else { + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A1_SEND_AKE_INIT); + } + break; + case D2_A1_SEND_AKE_INIT: + if (input->add_topology != PASS || + input->create_session != PASS || + input->ake_init_prepare != PASS) { + /* out of sync with psp state */ + adjust->hdcp2.disable = 1; + fail_and_restart_in_ms(0, &status, output); + break; + } else if (input->ake_init_write != PASS) { + /* possibly display not ready */ + fail_and_restart_in_ms(0, &status, output); + break; + } + callback_in_ms(100, output); + set_state_id(hdcp, output, D2_A1_VALIDATE_AKE_CERT); + break; + case D2_A1_VALIDATE_AKE_CERT: + if (input->ake_cert_read != PASS || + input->ake_cert_validation != PASS) { + /* + * 1A-08: consider invalid ake cert a failure + * 1A-09: consider receiver id listed in SRM a failure + */ + fail_and_restart_in_ms(0, &status, output); + break; + } + if (conn->is_km_stored && + !adjust->hdcp2.force_no_stored_km) { + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A1_SEND_STORED_KM); + } else { + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A1_SEND_NO_STORED_KM); + } + break; + case D2_A1_SEND_NO_STORED_KM: + if (input->no_stored_km_write != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + if (adjust->hdcp2.increase_h_prime_timeout) + set_watchdog_in_ms(hdcp, 2000, output); + else + set_watchdog_in_ms(hdcp, 1000, output); + set_state_id(hdcp, output, D2_A1_READ_H_PRIME); + break; + case D2_A1_READ_H_PRIME: + if (input->h_prime_available != PASS) { + if (event_ctx->event == + MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) + /* 1A-10-3: consider h' timeout a failure */ + fail_and_restart_in_ms(1000, &status, output); + else + increment_stay_counter(hdcp); + break; + } else if (input->h_prime_read != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + set_watchdog_in_ms(hdcp, 200, output); + set_state_id(hdcp, output, D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME); + break; + case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME: + if (input->pairing_available != PASS) { + if (event_ctx->event == + MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) + /* + * 1A-11: consider pairing info timeout + * a failure + */ + fail_and_restart_in_ms(0, &status, output); + else + increment_stay_counter(hdcp); + break; + } else if (input->pairing_info_read != PASS || + input->h_prime_validation != PASS) { + /* 1A-10-1: consider invalid h' a failure */ + fail_and_restart_in_ms(0, &status, output); + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A2_LOCALITY_CHECK); + break; + case D2_A1_SEND_STORED_KM: + if (input->stored_km_write != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + set_watchdog_in_ms(hdcp, 200, output); + set_state_id(hdcp, output, D2_A1_VALIDATE_H_PRIME); + break; + case D2_A1_VALIDATE_H_PRIME: + if (input->h_prime_available != PASS) { + if (event_ctx->event == + MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) + /* 1A-10-2: consider h' timeout a failure */ + fail_and_restart_in_ms(1000, &status, output); + else + increment_stay_counter(hdcp); + break; + } else if (input->h_prime_read != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } else if (input->h_prime_validation != PASS) { + /* 1A-10-1: consider invalid h' a failure */ + adjust->hdcp2.force_no_stored_km = 1; + fail_and_restart_in_ms(0, &status, output); + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A2_LOCALITY_CHECK); + break; + case D2_A2_LOCALITY_CHECK: + if (hdcp->state.stay_count > 10 || + input->lc_init_prepare != PASS || + input->lc_init_write != PASS || + input->l_prime_read != PASS) { + /* 1A-12: consider invalid l' a failure */ + fail_and_restart_in_ms(0, &status, output); + break; + } else if (input->l_prime_validation != PASS) { + callback_in_ms(0, output); + increment_stay_counter(hdcp); + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER); + break; + case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER: + if (input->eks_prepare != PASS || + input->eks_write != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + if (conn->is_repeater) { + set_watchdog_in_ms(hdcp, 3000, output); + set_state_id(hdcp, output, D2_A6_WAIT_FOR_RX_ID_LIST); + } else { + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_SEND_CONTENT_STREAM_TYPE); + } + break; + case D2_SEND_CONTENT_STREAM_TYPE: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS || + input->link_integrity_check_dp != PASS || + input->content_stream_type_write != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } + callback_in_ms(210, output); + set_state_id(hdcp, output, D2_ENABLE_ENCRYPTION); + break; + case D2_ENABLE_ENCRYPTION: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS || + input->link_integrity_check_dp != PASS) { + /* + * 1A-07: restart hdcp on REAUTH_REQ + * 1B-08: restart hdcp on REAUTH_REQ + */ + fail_and_restart_in_ms(0, &status, output); + break; + } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); + break; + } else if (input->enable_encryption != PASS || + (is_dp_mst_hdcp(hdcp) && input->stream_encryption_dp != PASS)) { + fail_and_restart_in_ms(0, &status, output); + break; + } + set_state_id(hdcp, output, D2_A5_AUTHENTICATED); + HDCP_FULL_DDC_TRACE(hdcp); + break; + case D2_A5_AUTHENTICATED: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } else if (input->link_integrity_check_dp != PASS) { + if (hdcp->connection.hdcp2_retry_count >= 1) + adjust->hdcp2.force_type = MOD_HDCP_FORCE_TYPE_0; + fail_and_restart_in_ms(0, &status, output); + break; + } else if (event_ctx->rx_id_list_ready && conn->is_repeater) { + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); + break; + } + increment_stay_counter(hdcp); + break; + case D2_A6_WAIT_FOR_RX_ID_LIST: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS || + input->link_integrity_check_dp != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } else if (!event_ctx->rx_id_list_ready) { + if (event_ctx->event == MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) + /* 1B-02: consider rx id list timeout a failure */ + fail_and_restart_in_ms(0, &status, output); + else + increment_stay_counter(hdcp); + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); + break; + case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS || + input->link_integrity_check_dp != PASS || + input->rx_id_list_read != PASS || + input->device_count_check != PASS || + input->rx_id_list_validation != PASS || + input->repeater_auth_ack_write != PASS) { + /* + * 1B-03: consider invalid v' a failure + * 1B-04: consider MAX_DEVS_EXCEEDED a failure + * 1B-05: consider MAX_CASCADE_EXCEEDED a failure + * 1B-06: consider invalid seq_num_V a failure + * 1B-09: consider seq_num_V rollover a failure + */ + fail_and_restart_in_ms(0, &status, output); + break; + } + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A9_SEND_STREAM_MANAGEMENT); + break; + case D2_A9_SEND_STREAM_MANAGEMENT: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS || + input->link_integrity_check_dp != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } else if (event_ctx->rx_id_list_ready) { + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); + break; + } else if (input->prepare_stream_manage != PASS || + input->stream_manage_write != PASS) { + if (event_ctx->event == MOD_HDCP_EVENT_CALLBACK) + fail_and_restart_in_ms(0, &status, output); + else + increment_stay_counter(hdcp); + break; + } + callback_in_ms(100, output); + set_state_id(hdcp, output, D2_A9_VALIDATE_STREAM_READY); + break; + case D2_A9_VALIDATE_STREAM_READY: + if (input->rxstatus_read != PASS || + input->reauth_request_check != PASS || + input->link_integrity_check_dp != PASS) { + fail_and_restart_in_ms(0, &status, output); + break; + } else if (event_ctx->rx_id_list_ready) { + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK); + break; + } else if (input->stream_ready_read != PASS || + input->stream_ready_validation != PASS) { + /* + * 1B-10-1: restart content stream management + * on invalid M' + * 1B-10-2: consider stream ready timeout a failure + */ + if (hdcp->auth.count.stream_management_retry_count > 10) { + fail_and_restart_in_ms(0, &status, output); + } else if (event_ctx->event == MOD_HDCP_EVENT_CALLBACK) { + hdcp->auth.count.stream_management_retry_count++; + callback_in_ms(0, output); + set_state_id(hdcp, output, D2_A9_SEND_STREAM_MANAGEMENT); + } else { + increment_stay_counter(hdcp); + } + break; + } + callback_in_ms(200, output); + set_state_id(hdcp, output, D2_ENABLE_ENCRYPTION); + break; + default: + status = MOD_HDCP_STATUS_INVALID_STATE; + fail_and_restart_in_ms(0, &status, output); + break; + } + return status; +} |