Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Bhawanpreet Lakha | 2290 | 95.46% | 5 | 41.67% |
Isabel Zhang | 86 | 3.58% | 2 | 16.67% |
Wenjing Liu | 20 | 0.83% | 3 | 25.00% |
Colin Ian King | 3 | 0.13% | 2 | 16.67% |
Total | 2399 | 12 |
/* * Copyright 2019 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 * */ #ifndef HDCP_H_ #define HDCP_H_ #include "mod_hdcp.h" #include "hdcp_log.h" #include <drm/drm_hdcp.h> #include <drm/drm_dp_helper.h> enum mod_hdcp_trans_input_result { UNKNOWN = 0, PASS, FAIL }; struct mod_hdcp_transition_input_hdcp1 { uint8_t bksv_read; uint8_t bksv_validation; uint8_t create_session; uint8_t an_write; uint8_t aksv_write; uint8_t ainfo_write; uint8_t bcaps_read; uint8_t r0p_read; uint8_t rx_validation; uint8_t encryption; uint8_t link_maintenance; uint8_t ready_check; uint8_t bstatus_read; uint8_t max_cascade_check; uint8_t max_devs_check; uint8_t device_count_check; uint8_t ksvlist_read; uint8_t vp_read; uint8_t ksvlist_vp_validation; uint8_t hdcp_capable_dp; uint8_t binfo_read_dp; uint8_t r0p_available_dp; uint8_t link_integrity_check; uint8_t reauth_request_check; uint8_t stream_encryption_dp; }; struct mod_hdcp_transition_input_hdcp2 { uint8_t hdcp2version_read; uint8_t hdcp2_capable_check; uint8_t create_session; uint8_t ake_init_prepare; uint8_t ake_init_write; uint8_t rxstatus_read; uint8_t ake_cert_available; uint8_t ake_cert_read; uint8_t ake_cert_validation; uint8_t stored_km_write; uint8_t no_stored_km_write; uint8_t h_prime_available; uint8_t h_prime_read; uint8_t pairing_available; uint8_t pairing_info_read; uint8_t h_prime_validation; uint8_t lc_init_prepare; uint8_t lc_init_write; uint8_t l_prime_available_poll; uint8_t l_prime_read; uint8_t l_prime_validation; uint8_t eks_prepare; uint8_t eks_write; uint8_t enable_encryption; uint8_t reauth_request_check; uint8_t rx_id_list_read; uint8_t device_count_check; uint8_t rx_id_list_validation; uint8_t repeater_auth_ack_write; uint8_t prepare_stream_manage; uint8_t stream_manage_write; uint8_t stream_ready_available; uint8_t stream_ready_read; uint8_t stream_ready_validation; uint8_t rx_caps_read_dp; uint8_t content_stream_type_write; uint8_t link_integrity_check_dp; uint8_t stream_encryption_dp; }; union mod_hdcp_transition_input { struct mod_hdcp_transition_input_hdcp1 hdcp1; struct mod_hdcp_transition_input_hdcp2 hdcp2; }; struct mod_hdcp_message_hdcp1 { uint8_t an[8]; uint8_t aksv[5]; uint8_t ainfo; uint8_t bksv[5]; uint16_t r0p; uint8_t bcaps; uint16_t bstatus; uint8_t ksvlist[635]; uint16_t ksvlist_size; uint8_t vp[20]; uint16_t binfo_dp; }; struct mod_hdcp_message_hdcp2 { uint8_t hdcp2version_hdmi; uint8_t rxcaps_dp[3]; uint8_t rxstatus[2]; uint8_t ake_init[12]; uint8_t ake_cert[534]; uint8_t ake_no_stored_km[129]; uint8_t ake_stored_km[33]; uint8_t ake_h_prime[33]; uint8_t ake_pairing_info[17]; uint8_t lc_init[9]; uint8_t lc_l_prime[33]; uint8_t ske_eks[25]; uint8_t rx_id_list[177]; // 22 + 5 * 31 uint16_t rx_id_list_size; uint8_t repeater_auth_ack[17]; uint8_t repeater_auth_stream_manage[68]; // 6 + 2 * 31 uint16_t stream_manage_size; uint8_t repeater_auth_stream_ready[33]; uint8_t rxstatus_dp; uint8_t content_stream_type_dp[2]; }; union mod_hdcp_message { struct mod_hdcp_message_hdcp1 hdcp1; struct mod_hdcp_message_hdcp2 hdcp2; }; struct mod_hdcp_auth_counters { uint8_t stream_management_retry_count; }; /* contains values per connection */ struct mod_hdcp_connection { struct mod_hdcp_link link; uint8_t is_repeater; uint8_t is_km_stored; uint8_t is_hdcp1_revoked; uint8_t is_hdcp2_revoked; struct mod_hdcp_trace trace; uint8_t hdcp1_retry_count; uint8_t hdcp2_retry_count; }; /* contains values per authentication cycle */ struct mod_hdcp_authentication { uint32_t id; union mod_hdcp_message msg; union mod_hdcp_transition_input trans_input; struct mod_hdcp_auth_counters count; }; /* contains values per state change */ struct mod_hdcp_state { uint8_t id; uint32_t stay_count; }; /* per event in a state */ struct mod_hdcp_event_context { enum mod_hdcp_event event; uint8_t rx_id_list_ready; uint8_t unexpected_event; }; struct mod_hdcp { /* per link */ struct mod_hdcp_config config; /* per connection */ struct mod_hdcp_connection connection; /* per displays */ struct mod_hdcp_display displays[MAX_NUM_OF_DISPLAYS]; /* per authentication attempt */ struct mod_hdcp_authentication auth; /* per state in an authentication */ struct mod_hdcp_state state; /* reserved memory buffer */ uint8_t buf[2025]; }; enum mod_hdcp_initial_state_id { HDCP_UNINITIALIZED = 0x0, HDCP_INITIAL_STATE_START = HDCP_UNINITIALIZED, HDCP_INITIALIZED, HDCP_CP_NOT_DESIRED, HDCP_INITIAL_STATE_END = HDCP_CP_NOT_DESIRED }; enum mod_hdcp_hdcp1_state_id { HDCP1_STATE_START = HDCP_INITIAL_STATE_END, H1_A0_WAIT_FOR_ACTIVE_RX, H1_A1_EXCHANGE_KSVS, H1_A2_COMPUTATIONS_A3_VALIDATE_RX_A6_TEST_FOR_REPEATER, H1_A45_AUTHENTICATED, H1_A8_WAIT_FOR_READY, H1_A9_READ_KSV_LIST, HDCP1_STATE_END = H1_A9_READ_KSV_LIST }; enum mod_hdcp_hdcp1_dp_state_id { HDCP1_DP_STATE_START = HDCP1_STATE_END, D1_A0_DETERMINE_RX_HDCP_CAPABLE, D1_A1_EXCHANGE_KSVS, D1_A23_WAIT_FOR_R0_PRIME, D1_A2_COMPUTATIONS_A3_VALIDATE_RX_A5_TEST_FOR_REPEATER, D1_A4_AUTHENTICATED, D1_A6_WAIT_FOR_READY, D1_A7_READ_KSV_LIST, HDCP1_DP_STATE_END = D1_A7_READ_KSV_LIST, }; enum mod_hdcp_hdcp2_state_id { HDCP2_STATE_START = HDCP1_DP_STATE_END, H2_A0_KNOWN_HDCP2_CAPABLE_RX, H2_A1_SEND_AKE_INIT, H2_A1_VALIDATE_AKE_CERT, H2_A1_SEND_NO_STORED_KM, H2_A1_READ_H_PRIME, H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME, H2_A1_SEND_STORED_KM, H2_A1_VALIDATE_H_PRIME, H2_A2_LOCALITY_CHECK, H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER, H2_ENABLE_ENCRYPTION, H2_A5_AUTHENTICATED, H2_A6_WAIT_FOR_RX_ID_LIST, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK, H2_A9_SEND_STREAM_MANAGEMENT, H2_A9_VALIDATE_STREAM_READY, HDCP2_STATE_END = H2_A9_VALIDATE_STREAM_READY, }; enum mod_hdcp_hdcp2_dp_state_id { HDCP2_DP_STATE_START = HDCP2_STATE_END, D2_A0_DETERMINE_RX_HDCP_CAPABLE, D2_A1_SEND_AKE_INIT, D2_A1_VALIDATE_AKE_CERT, D2_A1_SEND_NO_STORED_KM, D2_A1_READ_H_PRIME, D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME, D2_A1_SEND_STORED_KM, D2_A1_VALIDATE_H_PRIME, D2_A2_LOCALITY_CHECK, D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER, D2_SEND_CONTENT_STREAM_TYPE, D2_ENABLE_ENCRYPTION, D2_A5_AUTHENTICATED, D2_A6_WAIT_FOR_RX_ID_LIST, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK, D2_A9_SEND_STREAM_MANAGEMENT, D2_A9_VALIDATE_STREAM_READY, HDCP2_DP_STATE_END = D2_A9_VALIDATE_STREAM_READY, HDCP_STATE_END = HDCP2_DP_STATE_END, }; /* hdcp1 executions and transitions */ typedef enum mod_hdcp_status (*mod_hdcp_action)(struct mod_hdcp *hdcp); uint8_t mod_hdcp_execute_and_set( mod_hdcp_action func, uint8_t *flag, enum mod_hdcp_status *status, struct mod_hdcp *hdcp, char *str); enum mod_hdcp_status mod_hdcp_hdcp1_execution(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp1 *input); enum mod_hdcp_status mod_hdcp_hdcp1_dp_execution(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp1 *input); enum mod_hdcp_status mod_hdcp_hdcp1_transition(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp1 *input, struct mod_hdcp_output *output); enum mod_hdcp_status mod_hdcp_hdcp1_dp_transition(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, struct mod_hdcp_transition_input_hdcp1 *input, struct mod_hdcp_output *output); /* hdcp2 executions and transitions */ 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 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 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 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); /* log functions */ void mod_hdcp_dump_binary_message(uint8_t *msg, uint32_t msg_size, uint8_t *buf, uint32_t buf_size); /* TODO: add adjustment log */ /* psp functions */ enum mod_hdcp_status mod_hdcp_add_display_to_topology( struct mod_hdcp *hdcp, uint8_t index); enum mod_hdcp_status mod_hdcp_remove_display_from_topology( struct mod_hdcp *hdcp, uint8_t index); enum mod_hdcp_status mod_hdcp_hdcp1_create_session(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_destroy_session(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_validate_rx(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_enable_encryption(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_validate_ksvlist_vp(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_enable_dp_stream_encryption( struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_link_maintenance(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp1_get_link_encryption_status(struct mod_hdcp *hdcp, enum mod_hdcp_encryption_status *encryption_status); enum mod_hdcp_status mod_hdcp_hdcp2_create_session(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_destroy_session(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_prepare_ake_init(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_validate_ake_cert(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_validate_h_prime(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_prepare_lc_init(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_validate_l_prime(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_prepare_eks(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_enable_encryption(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_validate_rx_id_list(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_enable_dp_stream_encryption( struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_prepare_stream_management( struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_validate_stream_ready( struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_hdcp2_get_link_encryption_status(struct mod_hdcp *hdcp, enum mod_hdcp_encryption_status *encryption_status); /* ddc functions */ enum mod_hdcp_status mod_hdcp_read_bksv(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_bcaps(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_bstatus(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_r0p(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_ksvlist(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_vp(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_binfo(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_aksv(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_ainfo(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_an(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_hdcp2version(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_rxcaps(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_rxstatus(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_ake_cert(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_h_prime(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_pairing_info(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_l_prime(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_rx_id_list(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_read_stream_ready(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_ake_init(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_no_stored_km(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_stored_km(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_lc_init(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_eks(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_repeater_auth_ack(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_stream_manage(struct mod_hdcp *hdcp); enum mod_hdcp_status mod_hdcp_write_content_type(struct mod_hdcp *hdcp); /* hdcp version helpers */ static inline uint8_t is_dp_hdcp(struct mod_hdcp *hdcp) { return (hdcp->connection.link.mode == MOD_HDCP_MODE_DP); } static inline uint8_t is_dp_mst_hdcp(struct mod_hdcp *hdcp) { return (hdcp->connection.link.mode == MOD_HDCP_MODE_DP && hdcp->connection.link.dp.mst_supported); } static inline uint8_t is_hdmi_dvi_sl_hdcp(struct mod_hdcp *hdcp) { return (hdcp->connection.link.mode == MOD_HDCP_MODE_DEFAULT); } /* hdcp state helpers */ static inline uint8_t current_state(struct mod_hdcp *hdcp) { return hdcp->state.id; } static inline void set_state_id(struct mod_hdcp *hdcp, struct mod_hdcp_output *output, uint8_t id) { memset(&hdcp->state, 0, sizeof(hdcp->state)); hdcp->state.id = id; /* callback timer should be reset per state */ output->callback_stop = 1; output->watchdog_timer_stop = 1; HDCP_NEXT_STATE_TRACE(hdcp, id, output); } static inline uint8_t is_in_hdcp1_states(struct mod_hdcp *hdcp) { return (current_state(hdcp) > HDCP1_STATE_START && current_state(hdcp) <= HDCP1_STATE_END); } static inline uint8_t is_in_hdcp1_dp_states(struct mod_hdcp *hdcp) { return (current_state(hdcp) > HDCP1_DP_STATE_START && current_state(hdcp) <= HDCP1_DP_STATE_END); } static inline uint8_t is_in_hdcp2_states(struct mod_hdcp *hdcp) { return (current_state(hdcp) > HDCP2_STATE_START && current_state(hdcp) <= HDCP2_STATE_END); } static inline uint8_t is_in_hdcp2_dp_states(struct mod_hdcp *hdcp) { return (current_state(hdcp) > HDCP2_DP_STATE_START && current_state(hdcp) <= HDCP2_DP_STATE_END); } static inline uint8_t is_hdcp1(struct mod_hdcp *hdcp) { return (is_in_hdcp1_states(hdcp) || is_in_hdcp1_dp_states(hdcp)); } static inline uint8_t is_hdcp2(struct mod_hdcp *hdcp) { return (is_in_hdcp2_states(hdcp) || is_in_hdcp2_dp_states(hdcp)); } static inline uint8_t is_in_cp_not_desired_state(struct mod_hdcp *hdcp) { return current_state(hdcp) == HDCP_CP_NOT_DESIRED; } static inline uint8_t is_in_initialized_state(struct mod_hdcp *hdcp) { return current_state(hdcp) == HDCP_INITIALIZED; } /* transition operation helpers */ static inline void increment_stay_counter(struct mod_hdcp *hdcp) { hdcp->state.stay_count++; } static inline void fail_and_restart_in_ms(uint16_t time, enum mod_hdcp_status *status, struct mod_hdcp_output *output) { output->callback_needed = 1; output->callback_delay = time; output->watchdog_timer_needed = 0; output->watchdog_timer_delay = 0; *status = MOD_HDCP_STATUS_RESET_NEEDED; } static inline void callback_in_ms(uint16_t time, struct mod_hdcp_output *output) { output->callback_needed = 1; output->callback_delay = time; } static inline void set_watchdog_in_ms(struct mod_hdcp *hdcp, uint16_t time, struct mod_hdcp_output *output) { output->watchdog_timer_needed = 1; output->watchdog_timer_delay = time; } /* connection topology helpers */ static inline uint8_t is_display_active(struct mod_hdcp_display *display) { return display->state >= MOD_HDCP_DISPLAY_ACTIVE; } static inline uint8_t is_display_added(struct mod_hdcp_display *display) { return display->state >= MOD_HDCP_DISPLAY_ACTIVE_AND_ADDED; } static inline uint8_t is_display_encryption_enabled(struct mod_hdcp_display *display) { return display->state >= MOD_HDCP_DISPLAY_ENCRYPTION_ENABLED; } static inline uint8_t get_active_display_count(struct mod_hdcp *hdcp) { uint8_t added_count = 0; uint8_t i; for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) if (is_display_active(&hdcp->displays[i])) added_count++; return added_count; } static inline uint8_t get_added_display_count(struct mod_hdcp *hdcp) { uint8_t added_count = 0; uint8_t i; for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) if (is_display_added(&hdcp->displays[i])) added_count++; return added_count; } static inline struct mod_hdcp_display *get_first_added_display( struct mod_hdcp *hdcp) { uint8_t i; struct mod_hdcp_display *display = NULL; for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) if (is_display_added(&hdcp->displays[i])) { display = &hdcp->displays[i]; break; } return display; } static inline struct mod_hdcp_display *get_active_display_at_index( struct mod_hdcp *hdcp, uint8_t index) { uint8_t i; struct mod_hdcp_display *display = NULL; for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) if (hdcp->displays[i].index == index && is_display_active(&hdcp->displays[i])) { display = &hdcp->displays[i]; break; } return display; } static inline struct mod_hdcp_display *get_empty_display_container( struct mod_hdcp *hdcp) { uint8_t i; struct mod_hdcp_display *display = NULL; for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) if (!is_display_active(&hdcp->displays[i])) { display = &hdcp->displays[i]; break; } return display; } static inline void reset_retry_counts(struct mod_hdcp *hdcp) { hdcp->connection.hdcp1_retry_count = 0; hdcp->connection.hdcp2_retry_count = 0; } #endif /* HDCP_H_ */
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