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0001 /*
0002  * Copyright 2019 Advanced Micro Devices, Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: AMD
0023  *
0024  */
0025 
0026 
0027 #include "hdcp.h"
0028 
0029 void mod_hdcp_dump_binary_message(uint8_t *msg, uint32_t msg_size,
0030         uint8_t *buf, uint32_t buf_size)
0031 {
0032     const uint8_t bytes_per_line = 16,
0033             byte_size = 3,
0034             newline_size = 1,
0035             terminator_size = 1;
0036     uint32_t line_count = msg_size / bytes_per_line,
0037             trailing_bytes = msg_size % bytes_per_line;
0038     uint32_t target_size = (byte_size * bytes_per_line + newline_size) * line_count +
0039             byte_size * trailing_bytes + newline_size + terminator_size;
0040     uint32_t buf_pos = 0;
0041     uint32_t i = 0;
0042 
0043     if (buf_size >= target_size) {
0044         for (i = 0; i < msg_size; i++) {
0045             if (i % bytes_per_line == 0)
0046                 buf[buf_pos++] = '\n';
0047             sprintf(&buf[buf_pos], "%02X ", msg[i]);
0048             buf_pos += byte_size;
0049         }
0050         buf[buf_pos++] = '\0';
0051     }
0052 }
0053 
0054 void mod_hdcp_log_ddc_trace(struct mod_hdcp *hdcp)
0055 {
0056     if (is_hdcp1(hdcp)) {
0057         HDCP_DDC_READ_TRACE(hdcp, "BKSV", hdcp->auth.msg.hdcp1.bksv,
0058                 sizeof(hdcp->auth.msg.hdcp1.bksv));
0059         HDCP_DDC_READ_TRACE(hdcp, "BCAPS", &hdcp->auth.msg.hdcp1.bcaps,
0060                 sizeof(hdcp->auth.msg.hdcp1.bcaps));
0061         HDCP_DDC_READ_TRACE(hdcp, "BSTATUS",
0062                 (uint8_t *)&hdcp->auth.msg.hdcp1.bstatus,
0063                 sizeof(hdcp->auth.msg.hdcp1.bstatus));
0064         HDCP_DDC_WRITE_TRACE(hdcp, "AN", hdcp->auth.msg.hdcp1.an,
0065                 sizeof(hdcp->auth.msg.hdcp1.an));
0066         HDCP_DDC_WRITE_TRACE(hdcp, "AKSV", hdcp->auth.msg.hdcp1.aksv,
0067                 sizeof(hdcp->auth.msg.hdcp1.aksv));
0068         HDCP_DDC_WRITE_TRACE(hdcp, "AINFO", &hdcp->auth.msg.hdcp1.ainfo,
0069                 sizeof(hdcp->auth.msg.hdcp1.ainfo));
0070         HDCP_DDC_READ_TRACE(hdcp, "RI' / R0'",
0071                 (uint8_t *)&hdcp->auth.msg.hdcp1.r0p,
0072                 sizeof(hdcp->auth.msg.hdcp1.r0p));
0073         HDCP_DDC_READ_TRACE(hdcp, "BINFO",
0074                 (uint8_t *)&hdcp->auth.msg.hdcp1.binfo_dp,
0075                 sizeof(hdcp->auth.msg.hdcp1.binfo_dp));
0076         HDCP_DDC_READ_TRACE(hdcp, "KSVLIST", hdcp->auth.msg.hdcp1.ksvlist,
0077                 hdcp->auth.msg.hdcp1.ksvlist_size);
0078         HDCP_DDC_READ_TRACE(hdcp, "V'", hdcp->auth.msg.hdcp1.vp,
0079                 sizeof(hdcp->auth.msg.hdcp1.vp));
0080     } else if (is_hdcp2(hdcp)) {
0081         HDCP_DDC_READ_TRACE(hdcp, "HDCP2Version",
0082                 &hdcp->auth.msg.hdcp2.hdcp2version_hdmi,
0083                 sizeof(hdcp->auth.msg.hdcp2.hdcp2version_hdmi));
0084         HDCP_DDC_READ_TRACE(hdcp, "Rx Caps", hdcp->auth.msg.hdcp2.rxcaps_dp,
0085                 sizeof(hdcp->auth.msg.hdcp2.rxcaps_dp));
0086         HDCP_DDC_WRITE_TRACE(hdcp, "AKE Init", hdcp->auth.msg.hdcp2.ake_init,
0087                 sizeof(hdcp->auth.msg.hdcp2.ake_init));
0088         HDCP_DDC_READ_TRACE(hdcp, "AKE Cert", hdcp->auth.msg.hdcp2.ake_cert,
0089                 sizeof(hdcp->auth.msg.hdcp2.ake_cert));
0090         HDCP_DDC_WRITE_TRACE(hdcp, "Stored KM",
0091                 hdcp->auth.msg.hdcp2.ake_stored_km,
0092                 sizeof(hdcp->auth.msg.hdcp2.ake_stored_km));
0093         HDCP_DDC_WRITE_TRACE(hdcp, "No Stored KM",
0094                 hdcp->auth.msg.hdcp2.ake_no_stored_km,
0095                 sizeof(hdcp->auth.msg.hdcp2.ake_no_stored_km));
0096         HDCP_DDC_READ_TRACE(hdcp, "H'", hdcp->auth.msg.hdcp2.ake_h_prime,
0097                 sizeof(hdcp->auth.msg.hdcp2.ake_h_prime));
0098         HDCP_DDC_READ_TRACE(hdcp, "Pairing Info",
0099                 hdcp->auth.msg.hdcp2.ake_pairing_info,
0100                 sizeof(hdcp->auth.msg.hdcp2.ake_pairing_info));
0101         HDCP_DDC_WRITE_TRACE(hdcp, "LC Init", hdcp->auth.msg.hdcp2.lc_init,
0102                 sizeof(hdcp->auth.msg.hdcp2.lc_init));
0103         HDCP_DDC_READ_TRACE(hdcp, "L'", hdcp->auth.msg.hdcp2.lc_l_prime,
0104                 sizeof(hdcp->auth.msg.hdcp2.lc_l_prime));
0105         HDCP_DDC_WRITE_TRACE(hdcp, "Exchange KS", hdcp->auth.msg.hdcp2.ske_eks,
0106                 sizeof(hdcp->auth.msg.hdcp2.ske_eks));
0107         HDCP_DDC_READ_TRACE(hdcp, "Rx Status",
0108                 (uint8_t *)&hdcp->auth.msg.hdcp2.rxstatus,
0109                 sizeof(hdcp->auth.msg.hdcp2.rxstatus));
0110         HDCP_DDC_READ_TRACE(hdcp, "Rx Id List",
0111                 hdcp->auth.msg.hdcp2.rx_id_list,
0112                 hdcp->auth.msg.hdcp2.rx_id_list_size);
0113         HDCP_DDC_WRITE_TRACE(hdcp, "Rx Id List Ack",
0114                 hdcp->auth.msg.hdcp2.repeater_auth_ack,
0115                 sizeof(hdcp->auth.msg.hdcp2.repeater_auth_ack));
0116         HDCP_DDC_WRITE_TRACE(hdcp, "Content Stream Management",
0117                 hdcp->auth.msg.hdcp2.repeater_auth_stream_manage,
0118                 hdcp->auth.msg.hdcp2.stream_manage_size);
0119         HDCP_DDC_READ_TRACE(hdcp, "Stream Ready",
0120                 hdcp->auth.msg.hdcp2.repeater_auth_stream_ready,
0121                 sizeof(hdcp->auth.msg.hdcp2.repeater_auth_stream_ready));
0122         HDCP_DDC_WRITE_TRACE(hdcp, "Content Stream Type",
0123                 hdcp->auth.msg.hdcp2.content_stream_type_dp,
0124                 sizeof(hdcp->auth.msg.hdcp2.content_stream_type_dp));
0125     }
0126 }
0127 
0128 char *mod_hdcp_status_to_str(int32_t status)
0129 {
0130     switch (status) {
0131     case MOD_HDCP_STATUS_SUCCESS:
0132         return "MOD_HDCP_STATUS_SUCCESS";
0133     case MOD_HDCP_STATUS_FAILURE:
0134         return "MOD_HDCP_STATUS_FAILURE";
0135     case MOD_HDCP_STATUS_RESET_NEEDED:
0136         return "MOD_HDCP_STATUS_RESET_NEEDED";
0137     case MOD_HDCP_STATUS_DISPLAY_OUT_OF_BOUND:
0138         return "MOD_HDCP_STATUS_DISPLAY_OUT_OF_BOUND";
0139     case MOD_HDCP_STATUS_DISPLAY_NOT_FOUND:
0140         return "MOD_HDCP_STATUS_DISPLAY_NOT_FOUND";
0141     case MOD_HDCP_STATUS_INVALID_STATE:
0142         return "MOD_HDCP_STATUS_INVALID_STATE";
0143     case MOD_HDCP_STATUS_NOT_IMPLEMENTED:
0144         return "MOD_HDCP_STATUS_NOT_IMPLEMENTED";
0145     case MOD_HDCP_STATUS_INTERNAL_POLICY_FAILURE:
0146         return "MOD_HDCP_STATUS_INTERNAL_POLICY_FAILURE";
0147     case MOD_HDCP_STATUS_UPDATE_TOPOLOGY_FAILURE:
0148         return "MOD_HDCP_STATUS_UPDATE_TOPOLOGY_FAILURE";
0149     case MOD_HDCP_STATUS_CREATE_PSP_SERVICE_FAILURE:
0150         return "MOD_HDCP_STATUS_CREATE_PSP_SERVICE_FAILURE";
0151     case MOD_HDCP_STATUS_DESTROY_PSP_SERVICE_FAILURE:
0152         return "MOD_HDCP_STATUS_DESTROY_PSP_SERVICE_FAILURE";
0153     case MOD_HDCP_STATUS_HDCP1_CREATE_SESSION_FAILURE:
0154         return "MOD_HDCP_STATUS_HDCP1_CREATE_SESSION_FAILURE";
0155     case MOD_HDCP_STATUS_HDCP1_DESTROY_SESSION_FAILURE:
0156         return "MOD_HDCP_STATUS_HDCP1_DESTROY_SESSION_FAILURE";
0157     case MOD_HDCP_STATUS_HDCP1_VALIDATE_ENCRYPTION_FAILURE:
0158         return "MOD_HDCP_STATUS_HDCP1_VALIDATE_ENCRYPTION_FAILURE";
0159     case MOD_HDCP_STATUS_HDCP1_NOT_HDCP_REPEATER:
0160         return "MOD_HDCP_STATUS_HDCP1_NOT_HDCP_REPEATER";
0161     case MOD_HDCP_STATUS_HDCP1_NOT_CAPABLE:
0162         return "MOD_HDCP_STATUS_HDCP1_NOT_CAPABLE";
0163     case MOD_HDCP_STATUS_HDCP1_R0_PRIME_PENDING:
0164         return "MOD_HDCP_STATUS_HDCP1_R0_PRIME_PENDING";
0165     case MOD_HDCP_STATUS_HDCP1_VALIDATE_RX_FAILURE:
0166         return "MOD_HDCP_STATUS_HDCP1_VALIDATE_RX_FAILURE";
0167     case MOD_HDCP_STATUS_HDCP1_BKSV_REVOKED:
0168         return "MOD_HDCP_STATUS_HDCP1_BKSV_REVOKED";
0169     case MOD_HDCP_STATUS_HDCP1_KSV_LIST_NOT_READY:
0170         return "MOD_HDCP_STATUS_HDCP1_KSV_LIST_NOT_READY";
0171     case MOD_HDCP_STATUS_HDCP1_VALIDATE_KSV_LIST_FAILURE:
0172         return "MOD_HDCP_STATUS_HDCP1_VALIDATE_KSV_LIST_FAILURE";
0173     case MOD_HDCP_STATUS_HDCP1_KSV_LIST_REVOKED:
0174         return "MOD_HDCP_STATUS_HDCP1_KSV_LIST_REVOKED";
0175     case MOD_HDCP_STATUS_HDCP1_ENABLE_ENCRYPTION_FAILURE:
0176         return "MOD_HDCP_STATUS_HDCP1_ENABLE_ENCRYPTION_FAILURE";
0177     case MOD_HDCP_STATUS_HDCP1_ENABLE_STREAM_ENCRYPTION_FAILURE:
0178         return "MOD_HDCP_STATUS_HDCP1_ENABLE_STREAM_ENCRYPTION_FAILURE";
0179     case MOD_HDCP_STATUS_HDCP1_MAX_CASCADE_EXCEEDED_FAILURE:
0180         return "MOD_HDCP_STATUS_HDCP1_MAX_CASCADE_EXCEEDED_FAILURE";
0181     case MOD_HDCP_STATUS_HDCP1_MAX_DEVS_EXCEEDED_FAILURE:
0182         return "MOD_HDCP_STATUS_HDCP1_MAX_DEVS_EXCEEDED_FAILURE";
0183     case MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE:
0184         return "MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE";
0185     case MOD_HDCP_STATUS_HDCP1_LINK_INTEGRITY_FAILURE:
0186         return "MOD_HDCP_STATUS_HDCP1_LINK_INTEGRITY_FAILURE";
0187     case MOD_HDCP_STATUS_HDCP1_REAUTH_REQUEST_ISSUED:
0188         return "MOD_HDCP_STATUS_HDCP1_REAUTH_REQUEST_ISSUED";
0189     case MOD_HDCP_STATUS_HDCP1_LINK_MAINTENANCE_FAILURE:
0190         return "MOD_HDCP_STATUS_HDCP1_LINK_MAINTENANCE_FAILURE";
0191     case MOD_HDCP_STATUS_HDCP1_INVALID_BKSV:
0192         return "MOD_HDCP_STATUS_HDCP1_INVALID_BKSV";
0193     case MOD_HDCP_STATUS_DDC_FAILURE:
0194         return "MOD_HDCP_STATUS_DDC_FAILURE";
0195     case MOD_HDCP_STATUS_INVALID_OPERATION:
0196         return "MOD_HDCP_STATUS_INVALID_OPERATION";
0197     case MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE:
0198         return "MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE";
0199     case MOD_HDCP_STATUS_HDCP2_CREATE_SESSION_FAILURE:
0200         return "MOD_HDCP_STATUS_HDCP2_CREATE_SESSION_FAILURE";
0201     case MOD_HDCP_STATUS_HDCP2_DESTROY_SESSION_FAILURE:
0202         return "MOD_HDCP_STATUS_HDCP2_DESTROY_SESSION_FAILURE";
0203     case MOD_HDCP_STATUS_HDCP2_PREP_AKE_INIT_FAILURE:
0204         return "MOD_HDCP_STATUS_HDCP2_PREP_AKE_INIT_FAILURE";
0205     case MOD_HDCP_STATUS_HDCP2_AKE_CERT_PENDING:
0206         return "MOD_HDCP_STATUS_HDCP2_AKE_CERT_PENDING";
0207     case MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING:
0208         return "MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING";
0209     case MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING:
0210         return "MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING";
0211     case MOD_HDCP_STATUS_HDCP2_VALIDATE_AKE_CERT_FAILURE:
0212         return "MOD_HDCP_STATUS_HDCP2_VALIDATE_AKE_CERT_FAILURE";
0213     case MOD_HDCP_STATUS_HDCP2_AKE_CERT_REVOKED:
0214         return "MOD_HDCP_STATUS_HDCP2_AKE_CERT_REVOKED";
0215     case MOD_HDCP_STATUS_HDCP2_VALIDATE_H_PRIME_FAILURE:
0216         return "MOD_HDCP_STATUS_HDCP2_VALIDATE_H_PRIME_FAILURE";
0217     case MOD_HDCP_STATUS_HDCP2_VALIDATE_PAIRING_INFO_FAILURE:
0218         return "MOD_HDCP_STATUS_HDCP2_VALIDATE_PAIRING_INFO_FAILURE";
0219     case MOD_HDCP_STATUS_HDCP2_PREP_LC_INIT_FAILURE:
0220         return "MOD_HDCP_STATUS_HDCP2_PREP_LC_INIT_FAILURE";
0221     case MOD_HDCP_STATUS_HDCP2_L_PRIME_PENDING:
0222         return "MOD_HDCP_STATUS_HDCP2_L_PRIME_PENDING";
0223     case MOD_HDCP_STATUS_HDCP2_VALIDATE_L_PRIME_FAILURE:
0224         return "MOD_HDCP_STATUS_HDCP2_VALIDATE_L_PRIME_FAILURE";
0225     case MOD_HDCP_STATUS_HDCP2_PREP_EKS_FAILURE:
0226         return "MOD_HDCP_STATUS_HDCP2_PREP_EKS_FAILURE";
0227     case MOD_HDCP_STATUS_HDCP2_ENABLE_ENCRYPTION_FAILURE:
0228         return "MOD_HDCP_STATUS_HDCP2_ENABLE_ENCRYPTION_FAILURE";
0229     case MOD_HDCP_STATUS_HDCP2_VALIDATE_RX_ID_LIST_FAILURE:
0230         return "MOD_HDCP_STATUS_HDCP2_VALIDATE_RX_ID_LIST_FAILURE";
0231     case MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_REVOKED:
0232         return "MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_REVOKED";
0233     case MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY:
0234         return "MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY";
0235     case MOD_HDCP_STATUS_HDCP2_ENABLE_STREAM_ENCRYPTION_FAILURE:
0236         return "MOD_HDCP_STATUS_HDCP2_ENABLE_STREAM_ENCRYPTION_FAILURE";
0237     case MOD_HDCP_STATUS_HDCP2_STREAM_READY_PENDING:
0238         return "MOD_HDCP_STATUS_HDCP2_STREAM_READY_PENDING";
0239     case MOD_HDCP_STATUS_HDCP2_VALIDATE_STREAM_READY_FAILURE:
0240         return "MOD_HDCP_STATUS_HDCP2_VALIDATE_STREAM_READY_FAILURE";
0241     case MOD_HDCP_STATUS_HDCP2_PREPARE_STREAM_MANAGEMENT_FAILURE:
0242         return "MOD_HDCP_STATUS_HDCP2_PREPARE_STREAM_MANAGEMENT_FAILURE";
0243     case MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST:
0244         return "MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST";
0245     case MOD_HDCP_STATUS_HDCP2_REAUTH_LINK_INTEGRITY_FAILURE:
0246         return "MOD_HDCP_STATUS_HDCP2_REAUTH_LINK_INTEGRITY_FAILURE";
0247     case MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE:
0248         return "MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE";
0249     case MOD_HDCP_STATUS_UNSUPPORTED_PSP_VER_FAILURE:
0250         return "MOD_HDCP_STATUS_UNSUPPORTED_PSP_VER_FAILURE";
0251     default:
0252         return "MOD_HDCP_STATUS_UNKNOWN";
0253     }
0254 }
0255 
0256 char *mod_hdcp_state_id_to_str(int32_t id)
0257 {
0258     switch (id) {
0259     case HDCP_UNINITIALIZED:
0260         return "HDCP_UNINITIALIZED";
0261     case HDCP_INITIALIZED:
0262         return "HDCP_INITIALIZED";
0263     case HDCP_CP_NOT_DESIRED:
0264         return "HDCP_CP_NOT_DESIRED";
0265     case H1_A0_WAIT_FOR_ACTIVE_RX:
0266         return "H1_A0_WAIT_FOR_ACTIVE_RX";
0267     case H1_A1_EXCHANGE_KSVS:
0268         return "H1_A1_EXCHANGE_KSVS";
0269     case H1_A2_COMPUTATIONS_A3_VALIDATE_RX_A6_TEST_FOR_REPEATER:
0270         return "H1_A2_COMPUTATIONS_A3_VALIDATE_RX_A6_TEST_FOR_REPEATER";
0271     case H1_A45_AUTHENTICATED:
0272         return "H1_A45_AUTHENTICATED";
0273     case H1_A8_WAIT_FOR_READY:
0274         return "H1_A8_WAIT_FOR_READY";
0275     case H1_A9_READ_KSV_LIST:
0276         return "H1_A9_READ_KSV_LIST";
0277     case D1_A0_DETERMINE_RX_HDCP_CAPABLE:
0278         return "D1_A0_DETERMINE_RX_HDCP_CAPABLE";
0279     case D1_A1_EXCHANGE_KSVS:
0280         return "D1_A1_EXCHANGE_KSVS";
0281     case D1_A23_WAIT_FOR_R0_PRIME:
0282         return "D1_A23_WAIT_FOR_R0_PRIME";
0283     case D1_A2_COMPUTATIONS_A3_VALIDATE_RX_A5_TEST_FOR_REPEATER:
0284         return "D1_A2_COMPUTATIONS_A3_VALIDATE_RX_A5_TEST_FOR_REPEATER";
0285     case D1_A4_AUTHENTICATED:
0286         return "D1_A4_AUTHENTICATED";
0287     case D1_A6_WAIT_FOR_READY:
0288         return "D1_A6_WAIT_FOR_READY";
0289     case D1_A7_READ_KSV_LIST:
0290         return "D1_A7_READ_KSV_LIST";
0291     case H2_A0_KNOWN_HDCP2_CAPABLE_RX:
0292         return "H2_A0_KNOWN_HDCP2_CAPABLE_RX";
0293     case H2_A1_SEND_AKE_INIT:
0294         return "H2_A1_SEND_AKE_INIT";
0295     case H2_A1_VALIDATE_AKE_CERT:
0296         return "H2_A1_VALIDATE_AKE_CERT";
0297     case H2_A1_SEND_NO_STORED_KM:
0298         return "H2_A1_SEND_NO_STORED_KM";
0299     case H2_A1_READ_H_PRIME:
0300         return "H2_A1_READ_H_PRIME";
0301     case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
0302         return "H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME";
0303     case H2_A1_SEND_STORED_KM:
0304         return "H2_A1_SEND_STORED_KM";
0305     case H2_A1_VALIDATE_H_PRIME:
0306         return "H2_A1_VALIDATE_H_PRIME";
0307     case H2_A2_LOCALITY_CHECK:
0308         return "H2_A2_LOCALITY_CHECK";
0309     case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
0310         return "H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER";
0311     case H2_ENABLE_ENCRYPTION:
0312         return "H2_ENABLE_ENCRYPTION";
0313     case H2_A5_AUTHENTICATED:
0314         return "H2_A5_AUTHENTICATED";
0315     case H2_A6_WAIT_FOR_RX_ID_LIST:
0316         return "H2_A6_WAIT_FOR_RX_ID_LIST";
0317     case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
0318         return "H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK";
0319     case H2_A9_SEND_STREAM_MANAGEMENT:
0320         return "H2_A9_SEND_STREAM_MANAGEMENT";
0321     case H2_A9_VALIDATE_STREAM_READY:
0322         return "H2_A9_VALIDATE_STREAM_READY";
0323     case D2_A0_DETERMINE_RX_HDCP_CAPABLE:
0324         return "D2_A0_DETERMINE_RX_HDCP_CAPABLE";
0325     case D2_A1_SEND_AKE_INIT:
0326         return "D2_A1_SEND_AKE_INIT";
0327     case D2_A1_VALIDATE_AKE_CERT:
0328         return "D2_A1_VALIDATE_AKE_CERT";
0329     case D2_A1_SEND_NO_STORED_KM:
0330         return "D2_A1_SEND_NO_STORED_KM";
0331     case D2_A1_READ_H_PRIME:
0332         return "D2_A1_READ_H_PRIME";
0333     case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
0334         return "D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME";
0335     case D2_A1_SEND_STORED_KM:
0336         return "D2_A1_SEND_STORED_KM";
0337     case D2_A1_VALIDATE_H_PRIME:
0338         return "D2_A1_VALIDATE_H_PRIME";
0339     case D2_A2_LOCALITY_CHECK:
0340         return "D2_A2_LOCALITY_CHECK";
0341     case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
0342         return "D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER";
0343     case D2_SEND_CONTENT_STREAM_TYPE:
0344         return "D2_SEND_CONTENT_STREAM_TYPE";
0345     case D2_ENABLE_ENCRYPTION:
0346         return "D2_ENABLE_ENCRYPTION";
0347     case D2_A5_AUTHENTICATED:
0348         return "D2_A5_AUTHENTICATED";
0349     case D2_A6_WAIT_FOR_RX_ID_LIST:
0350         return "D2_A6_WAIT_FOR_RX_ID_LIST";
0351     case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
0352         return "D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK";
0353     case D2_A9_SEND_STREAM_MANAGEMENT:
0354         return "D2_A9_SEND_STREAM_MANAGEMENT";
0355     case D2_A9_VALIDATE_STREAM_READY:
0356         return "D2_A9_VALIDATE_STREAM_READY";
0357     default:
0358         return "UNKNOWN_STATE_ID";
0359     }
0360 }
0361
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