Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Bhawanpreet Lakha | 4031 | 99.29% | 6 | 42.86% |
Martin Tsai | 8 | 0.20% | 1 | 7.14% |
Alex Deucher | 8 | 0.20% | 2 | 14.29% |
Yu-ting Shen | 7 | 0.17% | 1 | 7.14% |
Marcelo Mendes Spessoto Junior | 2 | 0.05% | 1 | 7.14% |
Aric Cyr | 2 | 0.05% | 1 | 7.14% |
Isabel Zhang | 1 | 0.02% | 1 | 7.14% |
Wenjing Liu | 1 | 0.02% | 1 | 7.14% |
Total | 4060 | 14 |
/* * 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 <linux/delay.h> #include "hdcp.h" static inline enum mod_hdcp_status check_receiver_id_list_ready(struct mod_hdcp *hdcp) { uint8_t is_ready = 0; if (is_dp_hdcp(hdcp)) is_ready = HDCP_2_2_DP_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus_dp) ? 1 : 0; else is_ready = (HDCP_2_2_HDMI_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus[1]) && (HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | hdcp->auth.msg.hdcp2.rxstatus[0])) ? 1 : 0; return is_ready ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY; } static inline enum mod_hdcp_status check_hdcp2_capable(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = (hdcp->auth.msg.hdcp2.rxcaps_dp[0] == HDCP_2_2_RX_CAPS_VERSION_VAL) && HDCP_2_2_DP_HDCP_CAPABLE(hdcp->auth.msg.hdcp2.rxcaps_dp[2]) ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE; else status = (hdcp->auth.msg.hdcp2.hdcp2version_hdmi & HDCP_2_2_HDMI_SUPPORT_MASK) ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE; return status; } static inline enum mod_hdcp_status check_reauthentication_request( struct mod_hdcp *hdcp) { uint8_t ret = 0; if (is_dp_hdcp(hdcp)) ret = HDCP_2_2_DP_RXSTATUS_REAUTH_REQ(hdcp->auth.msg.hdcp2.rxstatus_dp) ? MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST : MOD_HDCP_STATUS_SUCCESS; else ret = HDCP_2_2_HDMI_RXSTATUS_REAUTH_REQ(hdcp->auth.msg.hdcp2.rxstatus[1]) ? MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST : MOD_HDCP_STATUS_SUCCESS; return ret; } static inline enum mod_hdcp_status check_link_integrity_failure_dp( struct mod_hdcp *hdcp) { return HDCP_2_2_DP_RXSTATUS_LINK_FAILED(hdcp->auth.msg.hdcp2.rxstatus_dp) ? MOD_HDCP_STATUS_HDCP2_REAUTH_LINK_INTEGRITY_FAILURE : MOD_HDCP_STATUS_SUCCESS; } static enum mod_hdcp_status check_ake_cert_available(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; uint16_t size; if (is_dp_hdcp(hdcp)) { status = MOD_HDCP_STATUS_SUCCESS; } else { status = mod_hdcp_read_rxstatus(hdcp); if (status == MOD_HDCP_STATUS_SUCCESS) { size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | hdcp->auth.msg.hdcp2.rxstatus[0]; status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_cert)) ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_HDCP2_AKE_CERT_PENDING; } } return status; } static enum mod_hdcp_status check_h_prime_available(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; uint8_t size; status = mod_hdcp_read_rxstatus(hdcp); if (status != MOD_HDCP_STATUS_SUCCESS) goto out; if (is_dp_hdcp(hdcp)) { status = HDCP_2_2_DP_RXSTATUS_H_PRIME(hdcp->auth.msg.hdcp2.rxstatus_dp) ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING; } else { size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | hdcp->auth.msg.hdcp2.rxstatus[0]; status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_h_prime)) ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING; } out: return status; } static enum mod_hdcp_status check_pairing_info_available(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; uint8_t size; status = mod_hdcp_read_rxstatus(hdcp); if (status != MOD_HDCP_STATUS_SUCCESS) goto out; if (is_dp_hdcp(hdcp)) { status = HDCP_2_2_DP_RXSTATUS_PAIRING(hdcp->auth.msg.hdcp2.rxstatus_dp) ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING; } else { size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | hdcp->auth.msg.hdcp2.rxstatus[0]; status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_pairing_info)) ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING; } out: return status; } static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp) { enum mod_hdcp_status status = MOD_HDCP_STATUS_FAILURE; uint8_t size; uint16_t max_wait = 20; // units of ms uint16_t num_polls = 5; uint16_t wait_time = max_wait / num_polls; if (is_dp_hdcp(hdcp)) status = MOD_HDCP_STATUS_INVALID_OPERATION; else for (; num_polls; num_polls--) { msleep(wait_time); status = mod_hdcp_read_rxstatus(hdcp); if (status != MOD_HDCP_STATUS_SUCCESS) break; size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | hdcp->auth.msg.hdcp2.rxstatus[0]; status = (size == sizeof(hdcp->auth.msg.hdcp2.lc_l_prime)) ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_HDCP2_L_PRIME_PENDING; if (status == MOD_HDCP_STATUS_SUCCESS) break; } return status; } static enum mod_hdcp_status check_stream_ready_available(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; uint8_t size; if (is_dp_hdcp(hdcp)) { status = MOD_HDCP_STATUS_INVALID_OPERATION; } else { status = mod_hdcp_read_rxstatus(hdcp); if (status != MOD_HDCP_STATUS_SUCCESS) goto out; size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | hdcp->auth.msg.hdcp2.rxstatus[0]; status = (size == sizeof(hdcp->auth.msg.hdcp2.repeater_auth_stream_ready)) ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_HDCP2_STREAM_READY_PENDING; } out: return status; } static inline uint8_t get_device_count(struct mod_hdcp *hdcp) { return HDCP_2_2_DEV_COUNT_LO(hdcp->auth.msg.hdcp2.rx_id_list[2]) + (HDCP_2_2_DEV_COUNT_HI(hdcp->auth.msg.hdcp2.rx_id_list[1]) << 4); } static enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp) { /* Avoid device count == 0 to do authentication */ if (get_device_count(hdcp) == 0) return MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE; /* Some MST display may choose to report the internal panel as an HDCP RX. */ /* To update this condition with 1(because the immediate repeater's internal */ /* panel is possibly not included in DEVICE_COUNT) + get_device_count(hdcp). */ /* Device count must be greater than or equal to tracked hdcp displays. */ return ((1 + get_device_count(hdcp)) < get_active_display_count(hdcp)) ? MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE : MOD_HDCP_STATUS_SUCCESS; } static uint8_t process_rxstatus(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input, enum mod_hdcp_status *status) { if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxstatus, &input->rxstatus_read, status, hdcp, "rxstatus_read")) goto out; if (!mod_hdcp_execute_and_set(check_reauthentication_request, &input->reauth_request_check, status, hdcp, "reauth_request_check")) goto out; if (is_dp_hdcp(hdcp)) { if (!mod_hdcp_execute_and_set(check_link_integrity_failure_dp, &input->link_integrity_check_dp, status, hdcp, "link_integrity_check_dp")) goto out; } if (hdcp->connection.is_repeater) if (check_receiver_id_list_ready(hdcp) == MOD_HDCP_STATUS_SUCCESS) { HDCP_INPUT_PASS_TRACE(hdcp, "rx_id_list_ready"); event_ctx->rx_id_list_ready = 1; if (is_dp_hdcp(hdcp)) hdcp->auth.msg.hdcp2.rx_id_list_size = sizeof(hdcp->auth.msg.hdcp2.rx_id_list); else hdcp->auth.msg.hdcp2.rx_id_list_size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | hdcp->auth.msg.hdcp2.rxstatus[0]; } out: return (*status == MOD_HDCP_STATUS_SUCCESS); } static enum mod_hdcp_status known_hdcp2_capable_rx(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { event_ctx->unexpected_event = 1; goto out; } if (!mod_hdcp_execute_and_set(mod_hdcp_read_hdcp2version, &input->hdcp2version_read, &status, hdcp, "hdcp2version_read")) goto out; if (!mod_hdcp_execute_and_set(check_hdcp2_capable, &input->hdcp2_capable_check, &status, hdcp, "hdcp2_capable")) goto out; out: return status; } static enum mod_hdcp_status send_ake_init(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { event_ctx->unexpected_event = 1; goto out; } if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_create_session, &input->create_session, &status, hdcp, "create_session")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_ake_init, &input->ake_init_prepare, &status, hdcp, "ake_init_prepare")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_write_ake_init, &input->ake_init_write, &status, hdcp, "ake_init_write")) goto out; out: return status; } static enum mod_hdcp_status validate_ake_cert(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { event_ctx->unexpected_event = 1; goto out; } if (is_hdmi_dvi_sl_hdcp(hdcp)) if (!mod_hdcp_execute_and_set(check_ake_cert_available, &input->ake_cert_available, &status, hdcp, "ake_cert_available")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_read_ake_cert, &input->ake_cert_read, &status, hdcp, "ake_cert_read")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_ake_cert, &input->ake_cert_validation, &status, hdcp, "ake_cert_validation")) goto out; out: return status; } static enum mod_hdcp_status send_no_stored_km(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { event_ctx->unexpected_event = 1; goto out; } if (!mod_hdcp_execute_and_set(mod_hdcp_write_no_stored_km, &input->no_stored_km_write, &status, hdcp, "no_stored_km_write")) goto out; out: return status; } static enum mod_hdcp_status read_h_prime(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_CPIRQ && event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { event_ctx->unexpected_event = 1; goto out; } if (!mod_hdcp_execute_and_set(check_h_prime_available, &input->h_prime_available, &status, hdcp, "h_prime_available")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime, &input->h_prime_read, &status, hdcp, "h_prime_read")) goto out; out: return status; } static enum mod_hdcp_status read_pairing_info_and_validate_h_prime( struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_CPIRQ && event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { event_ctx->unexpected_event = 1; goto out; } if (!mod_hdcp_execute_and_set(check_pairing_info_available, &input->pairing_available, &status, hdcp, "pairing_available")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_read_pairing_info, &input->pairing_info_read, &status, hdcp, "pairing_info_read")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime, &input->h_prime_validation, &status, hdcp, "h_prime_validation")) goto out; out: return status; } static enum mod_hdcp_status send_stored_km(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { event_ctx->unexpected_event = 1; goto out; } if (!mod_hdcp_execute_and_set(mod_hdcp_write_stored_km, &input->stored_km_write, &status, hdcp, "stored_km_write")) goto out; out: return status; } static enum mod_hdcp_status validate_h_prime(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_CPIRQ && event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { event_ctx->unexpected_event = 1; goto out; } if (!mod_hdcp_execute_and_set(check_h_prime_available, &input->h_prime_available, &status, hdcp, "h_prime_available")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime, &input->h_prime_read, &status, hdcp, "h_prime_read")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime, &input->h_prime_validation, &status, hdcp, "h_prime_validation")) goto out; out: return status; } static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { event_ctx->unexpected_event = 1; goto out; } if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_lc_init, &input->lc_init_prepare, &status, hdcp, "lc_init_prepare")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_write_lc_init, &input->lc_init_write, &status, hdcp, "lc_init_write")) goto out; if (is_dp_hdcp(hdcp)) msleep(16); else if (!mod_hdcp_execute_and_set(poll_l_prime_available, &input->l_prime_available_poll, &status, hdcp, "l_prime_available_poll")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_read_l_prime, &input->l_prime_read, &status, hdcp, "l_prime_read")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_l_prime, &input->l_prime_validation, &status, hdcp, "l_prime_validation")) goto out; out: return status; } static enum mod_hdcp_status exchange_ks_and_test_for_repeater(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { event_ctx->unexpected_event = 1; goto out; } if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_eks, &input->eks_prepare, &status, hdcp, "eks_prepare")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_write_eks, &input->eks_write, &status, hdcp, "eks_write")) goto out; out: return status; } static enum mod_hdcp_status enable_encryption(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_CPIRQ) { event_ctx->unexpected_event = 1; goto out; } if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) { process_rxstatus(hdcp, event_ctx, input, &status); goto out; } if (is_hdmi_dvi_sl_hdcp(hdcp)) { if (!process_rxstatus(hdcp, event_ctx, input, &status)) goto out; if (event_ctx->rx_id_list_ready) goto out; } if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_enable_encryption, &input->enable_encryption, &status, hdcp, "enable_encryption")) goto out; if (is_dp_mst_hdcp(hdcp)) { if (!mod_hdcp_execute_and_set( mod_hdcp_hdcp2_enable_dp_stream_encryption, &input->stream_encryption_dp, &status, hdcp, "stream_encryption_dp")) goto out; } out: return status; } static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_CPIRQ) { event_ctx->unexpected_event = 1; goto out; } process_rxstatus(hdcp, event_ctx, input, &status); out: return status; } static enum mod_hdcp_status wait_for_rx_id_list(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_CPIRQ && event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { event_ctx->unexpected_event = 1; goto out; } if (!process_rxstatus(hdcp, event_ctx, input, &status)) goto out; if (!event_ctx->rx_id_list_ready) { status = MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY; goto out; } out: return status; } static enum mod_hdcp_status verify_rx_id_list_and_send_ack(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_CPIRQ) { event_ctx->unexpected_event = 1; goto out; } if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) { process_rxstatus(hdcp, event_ctx, input, &status); goto out; } if (!mod_hdcp_execute_and_set(mod_hdcp_read_rx_id_list, &input->rx_id_list_read, &status, hdcp, "receiver_id_list_read")) goto out; if (!mod_hdcp_execute_and_set(check_device_count, &input->device_count_check, &status, hdcp, "device_count_check")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_rx_id_list, &input->rx_id_list_validation, &status, hdcp, "rx_id_list_validation")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_write_repeater_auth_ack, &input->repeater_auth_ack_write, &status, hdcp, "repeater_auth_ack_write")) goto out; out: return status; } static enum mod_hdcp_status send_stream_management(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_CPIRQ) { event_ctx->unexpected_event = 1; goto out; } if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) { process_rxstatus(hdcp, event_ctx, input, &status); goto out; } if (is_hdmi_dvi_sl_hdcp(hdcp)) { if (!process_rxstatus(hdcp, event_ctx, input, &status)) goto out; if (event_ctx->rx_id_list_ready) goto out; } if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_stream_management, &input->prepare_stream_manage, &status, hdcp, "prepare_stream_manage")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_write_stream_manage, &input->stream_manage_write, &status, hdcp, "stream_manage_write")) goto out; out: return status; } static enum mod_hdcp_status validate_stream_ready(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_CPIRQ && event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { event_ctx->unexpected_event = 1; goto out; } if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) { process_rxstatus(hdcp, event_ctx, input, &status); goto out; } if (is_hdmi_dvi_sl_hdcp(hdcp)) { if (!process_rxstatus(hdcp, event_ctx, input, &status)) goto out; if (event_ctx->rx_id_list_ready) goto out; } if (is_hdmi_dvi_sl_hdcp(hdcp)) if (!mod_hdcp_execute_and_set(check_stream_ready_available, &input->stream_ready_available, &status, hdcp, "stream_ready_available")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_read_stream_ready, &input->stream_ready_read, &status, hdcp, "stream_ready_read")) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_stream_ready, &input->stream_ready_validation, &status, hdcp, "stream_ready_validation")) goto out; out: return status; } static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { event_ctx->unexpected_event = 1; goto out; } if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxcaps, &input->rx_caps_read_dp, &status, hdcp, "rx_caps_read_dp")) goto out; if (!mod_hdcp_execute_and_set(check_hdcp2_capable, &input->hdcp2_capable_check, &status, hdcp, "hdcp2_capable_check")) goto out; out: return status; } static enum mod_hdcp_status send_content_stream_type_dp(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && event_ctx->event != MOD_HDCP_EVENT_CPIRQ) { event_ctx->unexpected_event = 1; goto out; } if (!process_rxstatus(hdcp, event_ctx, input, &status)) goto out; if (!mod_hdcp_execute_and_set(mod_hdcp_write_content_type, &input->content_stream_type_write, &status, hdcp, "content_stream_type_write")) goto out; out: return status; } enum mod_hdcp_status mod_hdcp_hdcp2_execution(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; switch (current_state(hdcp)) { case H2_A0_KNOWN_HDCP2_CAPABLE_RX: status = known_hdcp2_capable_rx(hdcp, event_ctx, input); break; case H2_A1_SEND_AKE_INIT: status = send_ake_init(hdcp, event_ctx, input); break; case H2_A1_VALIDATE_AKE_CERT: status = validate_ake_cert(hdcp, event_ctx, input); break; case H2_A1_SEND_NO_STORED_KM: status = send_no_stored_km(hdcp, event_ctx, input); break; case H2_A1_READ_H_PRIME: status = read_h_prime(hdcp, event_ctx, input); break; case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME: status = read_pairing_info_and_validate_h_prime(hdcp, event_ctx, input); break; case H2_A1_SEND_STORED_KM: status = send_stored_km(hdcp, event_ctx, input); break; case H2_A1_VALIDATE_H_PRIME: status = validate_h_prime(hdcp, event_ctx, input); break; case H2_A2_LOCALITY_CHECK: status = locality_check(hdcp, event_ctx, input); break; case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER: status = exchange_ks_and_test_for_repeater(hdcp, event_ctx, input); break; case H2_ENABLE_ENCRYPTION: status = enable_encryption(hdcp, event_ctx, input); break; case H2_A5_AUTHENTICATED: status = authenticated(hdcp, event_ctx, input); break; case H2_A6_WAIT_FOR_RX_ID_LIST: status = wait_for_rx_id_list(hdcp, event_ctx, input); break; case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK: status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input); break; case H2_A9_SEND_STREAM_MANAGEMENT: status = send_stream_management(hdcp, event_ctx, input); break; case H2_A9_VALIDATE_STREAM_READY: status = validate_stream_ready(hdcp, event_ctx, input); break; default: status = MOD_HDCP_STATUS_INVALID_STATE; break; } return status; } enum mod_hdcp_status mod_hdcp_hdcp2_dp_execution(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp2 *input) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; switch (current_state(hdcp)) { case D2_A0_DETERMINE_RX_HDCP_CAPABLE: status = determine_rx_hdcp_capable_dp(hdcp, event_ctx, input); break; case D2_A1_SEND_AKE_INIT: status = send_ake_init(hdcp, event_ctx, input); break; case D2_A1_VALIDATE_AKE_CERT: status = validate_ake_cert(hdcp, event_ctx, input); break; case D2_A1_SEND_NO_STORED_KM: status = send_no_stored_km(hdcp, event_ctx, input); break; case D2_A1_READ_H_PRIME: status = read_h_prime(hdcp, event_ctx, input); break; case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME: status = read_pairing_info_and_validate_h_prime(hdcp, event_ctx, input); break; case D2_A1_SEND_STORED_KM: status = send_stored_km(hdcp, event_ctx, input); break; case D2_A1_VALIDATE_H_PRIME: status = validate_h_prime(hdcp, event_ctx, input); break; case D2_A2_LOCALITY_CHECK: status = locality_check(hdcp, event_ctx, input); break; case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER: status = exchange_ks_and_test_for_repeater(hdcp, event_ctx, input); break; case D2_SEND_CONTENT_STREAM_TYPE: status = send_content_stream_type_dp(hdcp, event_ctx, input); break; case D2_ENABLE_ENCRYPTION: status = enable_encryption(hdcp, event_ctx, input); break; case D2_A5_AUTHENTICATED: status = authenticated(hdcp, event_ctx, input); break; case D2_A6_WAIT_FOR_RX_ID_LIST: status = wait_for_rx_id_list(hdcp, event_ctx, input); break; case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK: status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input); break; case D2_A9_SEND_STREAM_MANAGEMENT: status = send_stream_management(hdcp, event_ctx, input); break; case D2_A9_VALIDATE_STREAM_READY: status = validate_stream_ready(hdcp, event_ctx, input); break; default: status = MOD_HDCP_STATUS_INVALID_STATE; break; } return status; }
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