/* * 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 * */ #include "hdcp.h" #ifdef __linux__ #define MIN(a, b) ((a) < (b) ? (a) : (b)) #endif #define HDCP_I2C_ADDR 0x3a /* 0x74 >> 1*/ #define KSV_READ_SIZE 0xf /* 0x6803b - 0x6802c */ #define HDCP_MAX_AUX_TRANSACTION_SIZE 16 #define DP_CP_IRQ (1 << 2) enum mod_hdcp_ddc_message_id { MOD_HDCP_MESSAGE_ID_INVALID = -1, /* HDCP 1.4 */ MOD_HDCP_MESSAGE_ID_READ_BKSV = 0, MOD_HDCP_MESSAGE_ID_READ_RI_R0, MOD_HDCP_MESSAGE_ID_WRITE_AKSV, MOD_HDCP_MESSAGE_ID_WRITE_AINFO, MOD_HDCP_MESSAGE_ID_WRITE_AN, MOD_HDCP_MESSAGE_ID_READ_VH_X, MOD_HDCP_MESSAGE_ID_READ_VH_0, MOD_HDCP_MESSAGE_ID_READ_VH_1, MOD_HDCP_MESSAGE_ID_READ_VH_2, MOD_HDCP_MESSAGE_ID_READ_VH_3, MOD_HDCP_MESSAGE_ID_READ_VH_4, MOD_HDCP_MESSAGE_ID_READ_BCAPS, MOD_HDCP_MESSAGE_ID_READ_BSTATUS, MOD_HDCP_MESSAGE_ID_READ_KSV_FIFO, MOD_HDCP_MESSAGE_ID_READ_BINFO, /* HDCP 2.2 */ MOD_HDCP_MESSAGE_ID_HDCP2VERSION, MOD_HDCP_MESSAGE_ID_RX_CAPS, MOD_HDCP_MESSAGE_ID_WRITE_AKE_INIT, MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_CERT, MOD_HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM, MOD_HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM, MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME, MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO, MOD_HDCP_MESSAGE_ID_WRITE_LC_INIT, MOD_HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME, MOD_HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS, MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST, MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST_PART2, MOD_HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK, MOD_HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE, MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY, MOD_HDCP_MESSAGE_ID_READ_RXSTATUS, MOD_HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE, MOD_HDCP_MESSAGE_ID_MAX }; static const uint8_t hdcp_i2c_offsets[] = { [MOD_HDCP_MESSAGE_ID_READ_BKSV] = 0x0, [MOD_HDCP_MESSAGE_ID_READ_RI_R0] = 0x8, [MOD_HDCP_MESSAGE_ID_WRITE_AKSV] = 0x10, [MOD_HDCP_MESSAGE_ID_WRITE_AINFO] = 0x15, [MOD_HDCP_MESSAGE_ID_WRITE_AN] = 0x18, [MOD_HDCP_MESSAGE_ID_READ_VH_X] = 0x20, [MOD_HDCP_MESSAGE_ID_READ_VH_0] = 0x20, [MOD_HDCP_MESSAGE_ID_READ_VH_1] = 0x24, [MOD_HDCP_MESSAGE_ID_READ_VH_2] = 0x28, [MOD_HDCP_MESSAGE_ID_READ_VH_3] = 0x2C, [MOD_HDCP_MESSAGE_ID_READ_VH_4] = 0x30, [MOD_HDCP_MESSAGE_ID_READ_BCAPS] = 0x40, [MOD_HDCP_MESSAGE_ID_READ_BSTATUS] = 0x41, [MOD_HDCP_MESSAGE_ID_READ_KSV_FIFO] = 0x43, [MOD_HDCP_MESSAGE_ID_READ_BINFO] = 0xFF, [MOD_HDCP_MESSAGE_ID_HDCP2VERSION] = 0x50, [MOD_HDCP_MESSAGE_ID_WRITE_AKE_INIT] = 0x60, [MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_CERT] = 0x80, [MOD_HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM] = 0x60, [MOD_HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM] = 0x60, [MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME] = 0x80, [MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO] = 0x80, [MOD_HDCP_MESSAGE_ID_WRITE_LC_INIT] = 0x60, [MOD_HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME] = 0x80, [MOD_HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS] = 0x60, [MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST] = 0x80, [MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST_PART2] = 0x80, [MOD_HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK] = 0x60, [MOD_HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE] = 0x60, [MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY] = 0x80, [MOD_HDCP_MESSAGE_ID_READ_RXSTATUS] = 0x70, [MOD_HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE] = 0x0 }; static const uint32_t hdcp_dpcd_addrs[] = { [MOD_HDCP_MESSAGE_ID_READ_BKSV] = 0x68000, [MOD_HDCP_MESSAGE_ID_READ_RI_R0] = 0x68005, [MOD_HDCP_MESSAGE_ID_WRITE_AKSV] = 0x68007, [MOD_HDCP_MESSAGE_ID_WRITE_AINFO] = 0x6803B, [MOD_HDCP_MESSAGE_ID_WRITE_AN] = 0x6800c, [MOD_HDCP_MESSAGE_ID_READ_VH_X] = 0x68014, [MOD_HDCP_MESSAGE_ID_READ_VH_0] = 0x68014, [MOD_HDCP_MESSAGE_ID_READ_VH_1] = 0x68018, [MOD_HDCP_MESSAGE_ID_READ_VH_2] = 0x6801c, [MOD_HDCP_MESSAGE_ID_READ_VH_3] = 0x68020, [MOD_HDCP_MESSAGE_ID_READ_VH_4] = 0x68024, [MOD_HDCP_MESSAGE_ID_READ_BCAPS] = 0x68028, [MOD_HDCP_MESSAGE_ID_READ_BSTATUS] = 0x68029, [MOD_HDCP_MESSAGE_ID_READ_KSV_FIFO] = 0x6802c, [MOD_HDCP_MESSAGE_ID_READ_BINFO] = 0x6802a, [MOD_HDCP_MESSAGE_ID_RX_CAPS] = 0x6921d, [MOD_HDCP_MESSAGE_ID_WRITE_AKE_INIT] = 0x69000, [MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_CERT] = 0x6900b, [MOD_HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM] = 0x69220, [MOD_HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM] = 0x692a0, [MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME] = 0x692c0, [MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO] = 0x692e0, [MOD_HDCP_MESSAGE_ID_WRITE_LC_INIT] = 0x692f0, [MOD_HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME] = 0x692f8, [MOD_HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS] = 0x69318, [MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST] = 0x69330, [MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST_PART2] = 0x69340, [MOD_HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK] = 0x693e0, [MOD_HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE] = 0x693f0, [MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY] = 0x69473, [MOD_HDCP_MESSAGE_ID_READ_RXSTATUS] = 0x69493, [MOD_HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE] = 0x69494 }; static enum mod_hdcp_status read(struct mod_hdcp *hdcp, enum mod_hdcp_ddc_message_id msg_id, uint8_t *buf, uint32_t buf_len) { bool success = true; uint32_t cur_size = 0; uint32_t data_offset = 0; if (msg_id == MOD_HDCP_MESSAGE_ID_INVALID || msg_id >= MOD_HDCP_MESSAGE_ID_MAX) return MOD_HDCP_STATUS_DDC_FAILURE; if (is_dp_hdcp(hdcp)) { int num_dpcd_addrs = sizeof(hdcp_dpcd_addrs) / sizeof(hdcp_dpcd_addrs[0]); if (msg_id >= num_dpcd_addrs) return MOD_HDCP_STATUS_DDC_FAILURE; while (buf_len > 0) { cur_size = MIN(buf_len, HDCP_MAX_AUX_TRANSACTION_SIZE); success = hdcp->config.ddc.funcs.read_dpcd(hdcp->config.ddc.handle, hdcp_dpcd_addrs[msg_id] + data_offset, buf + data_offset, cur_size); if (!success) break; buf_len -= cur_size; data_offset += cur_size; } } else { int num_i2c_offsets = sizeof(hdcp_i2c_offsets) / sizeof(hdcp_i2c_offsets[0]); if (msg_id >= num_i2c_offsets) return MOD_HDCP_STATUS_DDC_FAILURE; success = hdcp->config.ddc.funcs.read_i2c( hdcp->config.ddc.handle, HDCP_I2C_ADDR, hdcp_i2c_offsets[msg_id], buf, (uint32_t)buf_len); } return success ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_DDC_FAILURE; } static enum mod_hdcp_status read_repeatedly(struct mod_hdcp *hdcp, enum mod_hdcp_ddc_message_id msg_id, uint8_t *buf, uint32_t buf_len, uint8_t read_size) { enum mod_hdcp_status status = MOD_HDCP_STATUS_DDC_FAILURE; uint32_t cur_size = 0; uint32_t data_offset = 0; while (buf_len > 0) { cur_size = MIN(buf_len, read_size); status = read(hdcp, msg_id, buf + data_offset, cur_size); if (status != MOD_HDCP_STATUS_SUCCESS) break; buf_len -= cur_size; data_offset += cur_size; } return status; } static enum mod_hdcp_status write(struct mod_hdcp *hdcp, enum mod_hdcp_ddc_message_id msg_id, uint8_t *buf, uint32_t buf_len) { bool success = true; uint32_t cur_size = 0; uint32_t data_offset = 0; if (msg_id == MOD_HDCP_MESSAGE_ID_INVALID || msg_id >= MOD_HDCP_MESSAGE_ID_MAX) return MOD_HDCP_STATUS_DDC_FAILURE; if (is_dp_hdcp(hdcp)) { int num_dpcd_addrs = sizeof(hdcp_dpcd_addrs) / sizeof(hdcp_dpcd_addrs[0]); if (msg_id >= num_dpcd_addrs) return MOD_HDCP_STATUS_DDC_FAILURE; while (buf_len > 0) { cur_size = MIN(buf_len, HDCP_MAX_AUX_TRANSACTION_SIZE); success = hdcp->config.ddc.funcs.write_dpcd( hdcp->config.ddc.handle, hdcp_dpcd_addrs[msg_id] + data_offset, buf + data_offset, cur_size); if (!success) break; buf_len -= cur_size; data_offset += cur_size; } } else { int num_i2c_offsets = sizeof(hdcp_i2c_offsets) / sizeof(hdcp_i2c_offsets[0]); if (msg_id >= num_i2c_offsets) return MOD_HDCP_STATUS_DDC_FAILURE; hdcp->buf[0] = hdcp_i2c_offsets[msg_id]; memmove(&hdcp->buf[1], buf, buf_len); success = hdcp->config.ddc.funcs.write_i2c( hdcp->config.ddc.handle, HDCP_I2C_ADDR, hdcp->buf, (uint32_t)(buf_len+1)); } return success ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_DDC_FAILURE; } enum mod_hdcp_status mod_hdcp_read_bksv(struct mod_hdcp *hdcp) { return read(hdcp, MOD_HDCP_MESSAGE_ID_READ_BKSV, hdcp->auth.msg.hdcp1.bksv, sizeof(hdcp->auth.msg.hdcp1.bksv)); } enum mod_hdcp_status mod_hdcp_read_bcaps(struct mod_hdcp *hdcp) { return read(hdcp, MOD_HDCP_MESSAGE_ID_READ_BCAPS, &hdcp->auth.msg.hdcp1.bcaps, sizeof(hdcp->auth.msg.hdcp1.bcaps)); } enum mod_hdcp_status mod_hdcp_read_bstatus(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_BSTATUS, (uint8_t *)&hdcp->auth.msg.hdcp1.bstatus, 1); else status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_BSTATUS, (uint8_t *)&hdcp->auth.msg.hdcp1.bstatus, sizeof(hdcp->auth.msg.hdcp1.bstatus)); return status; } enum mod_hdcp_status mod_hdcp_read_r0p(struct mod_hdcp *hdcp) { return read(hdcp, MOD_HDCP_MESSAGE_ID_READ_RI_R0, (uint8_t *)&hdcp->auth.msg.hdcp1.r0p, sizeof(hdcp->auth.msg.hdcp1.r0p)); } /* special case, reading repeatedly at the same address, don't use read() */ enum mod_hdcp_status mod_hdcp_read_ksvlist(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = read_repeatedly(hdcp, MOD_HDCP_MESSAGE_ID_READ_KSV_FIFO, hdcp->auth.msg.hdcp1.ksvlist, hdcp->auth.msg.hdcp1.ksvlist_size, KSV_READ_SIZE); else status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_KSV_FIFO, (uint8_t *)&hdcp->auth.msg.hdcp1.ksvlist, hdcp->auth.msg.hdcp1.ksvlist_size); return status; } enum mod_hdcp_status mod_hdcp_read_vp(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_VH_0, &hdcp->auth.msg.hdcp1.vp[0], 4); if (status != MOD_HDCP_STATUS_SUCCESS) goto out; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_VH_1, &hdcp->auth.msg.hdcp1.vp[4], 4); if (status != MOD_HDCP_STATUS_SUCCESS) goto out; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_VH_2, &hdcp->auth.msg.hdcp1.vp[8], 4); if (status != MOD_HDCP_STATUS_SUCCESS) goto out; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_VH_3, &hdcp->auth.msg.hdcp1.vp[12], 4); if (status != MOD_HDCP_STATUS_SUCCESS) goto out; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_VH_4, &hdcp->auth.msg.hdcp1.vp[16], 4); out: return status; } enum mod_hdcp_status mod_hdcp_read_binfo(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_BINFO, (uint8_t *)&hdcp->auth.msg.hdcp1.binfo_dp, sizeof(hdcp->auth.msg.hdcp1.binfo_dp)); else status = MOD_HDCP_STATUS_INVALID_OPERATION; return status; } enum mod_hdcp_status mod_hdcp_write_aksv(struct mod_hdcp *hdcp) { return write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_AKSV, hdcp->auth.msg.hdcp1.aksv, sizeof(hdcp->auth.msg.hdcp1.aksv)); } enum mod_hdcp_status mod_hdcp_write_ainfo(struct mod_hdcp *hdcp) { return write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_AINFO, &hdcp->auth.msg.hdcp1.ainfo, sizeof(hdcp->auth.msg.hdcp1.ainfo)); } enum mod_hdcp_status mod_hdcp_write_an(struct mod_hdcp *hdcp) { return write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_AN, hdcp->auth.msg.hdcp1.an, sizeof(hdcp->auth.msg.hdcp1.an)); } enum mod_hdcp_status mod_hdcp_read_hdcp2version(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = MOD_HDCP_STATUS_INVALID_OPERATION; else status = read(hdcp, MOD_HDCP_MESSAGE_ID_HDCP2VERSION, &hdcp->auth.msg.hdcp2.hdcp2version_hdmi, sizeof(hdcp->auth.msg.hdcp2.hdcp2version_hdmi)); return status; } enum mod_hdcp_status mod_hdcp_read_rxcaps(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (!is_dp_hdcp(hdcp)) status = MOD_HDCP_STATUS_INVALID_OPERATION; else status = read(hdcp, MOD_HDCP_MESSAGE_ID_RX_CAPS, hdcp->auth.msg.hdcp2.rxcaps_dp, sizeof(hdcp->auth.msg.hdcp2.rxcaps_dp)); return status; } enum mod_hdcp_status mod_hdcp_read_rxstatus(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) { status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_RXSTATUS, &hdcp->auth.msg.hdcp2.rxstatus_dp, 1); } else { status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_RXSTATUS, (uint8_t *)&hdcp->auth.msg.hdcp2.rxstatus, sizeof(hdcp->auth.msg.hdcp2.rxstatus)); } return status; } enum mod_hdcp_status mod_hdcp_read_ake_cert(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) { hdcp->auth.msg.hdcp2.ake_cert[0] = HDCP_2_2_AKE_SEND_CERT; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_CERT, hdcp->auth.msg.hdcp2.ake_cert+1, sizeof(hdcp->auth.msg.hdcp2.ake_cert)-1); } else { status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_CERT, hdcp->auth.msg.hdcp2.ake_cert, sizeof(hdcp->auth.msg.hdcp2.ake_cert)); } return status; } enum mod_hdcp_status mod_hdcp_read_h_prime(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) { hdcp->auth.msg.hdcp2.ake_h_prime[0] = HDCP_2_2_AKE_SEND_HPRIME; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME, hdcp->auth.msg.hdcp2.ake_h_prime+1, sizeof(hdcp->auth.msg.hdcp2.ake_h_prime)-1); } else { status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME, hdcp->auth.msg.hdcp2.ake_h_prime, sizeof(hdcp->auth.msg.hdcp2.ake_h_prime)); } return status; } enum mod_hdcp_status mod_hdcp_read_pairing_info(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) { hdcp->auth.msg.hdcp2.ake_pairing_info[0] = HDCP_2_2_AKE_SEND_PAIRING_INFO; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO, hdcp->auth.msg.hdcp2.ake_pairing_info+1, sizeof(hdcp->auth.msg.hdcp2.ake_pairing_info)-1); } else { status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO, hdcp->auth.msg.hdcp2.ake_pairing_info, sizeof(hdcp->auth.msg.hdcp2.ake_pairing_info)); } return status; } enum mod_hdcp_status mod_hdcp_read_l_prime(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) { hdcp->auth.msg.hdcp2.lc_l_prime[0] = HDCP_2_2_LC_SEND_LPRIME; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME, hdcp->auth.msg.hdcp2.lc_l_prime+1, sizeof(hdcp->auth.msg.hdcp2.lc_l_prime)-1); } else { status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME, hdcp->auth.msg.hdcp2.lc_l_prime, sizeof(hdcp->auth.msg.hdcp2.lc_l_prime)); } return status; } enum mod_hdcp_status mod_hdcp_read_rx_id_list(struct mod_hdcp *hdcp) { enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; if (is_dp_hdcp(hdcp)) { uint32_t device_count = 0; uint32_t rx_id_list_size = 0; uint32_t bytes_read = 0; hdcp->auth.msg.hdcp2.rx_id_list[0] = HDCP_2_2_REP_SEND_RECVID_LIST; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST, hdcp->auth.msg.hdcp2.rx_id_list+1, HDCP_MAX_AUX_TRANSACTION_SIZE); if (status == MOD_HDCP_STATUS_SUCCESS) { bytes_read = HDCP_MAX_AUX_TRANSACTION_SIZE; device_count = 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); rx_id_list_size = MIN((21 + 5 * device_count), (sizeof(hdcp->auth.msg.hdcp2.rx_id_list) - 1)); status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST_PART2, hdcp->auth.msg.hdcp2.rx_id_list + 1 + bytes_read, (rx_id_list_size - 1) / HDCP_MAX_AUX_TRANSACTION_SIZE * HDCP_MAX_AUX_TRANSACTION_SIZE); } } else { status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST, hdcp->auth.msg.hdcp2.rx_id_list, hdcp->auth.msg.hdcp2.rx_id_list_size); } return status; } enum mod_hdcp_status mod_hdcp_read_stream_ready(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) { hdcp->auth.msg.hdcp2.repeater_auth_stream_ready[0] = HDCP_2_2_REP_STREAM_READY; status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY, hdcp->auth.msg.hdcp2.repeater_auth_stream_ready+1, sizeof(hdcp->auth.msg.hdcp2.repeater_auth_stream_ready)-1); } else { status = read(hdcp, MOD_HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY, hdcp->auth.msg.hdcp2.repeater_auth_stream_ready, sizeof(hdcp->auth.msg.hdcp2.repeater_auth_stream_ready)); } return status; } enum mod_hdcp_status mod_hdcp_write_ake_init(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_AKE_INIT, hdcp->auth.msg.hdcp2.ake_init+1, sizeof(hdcp->auth.msg.hdcp2.ake_init)-1); else status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_AKE_INIT, hdcp->auth.msg.hdcp2.ake_init, sizeof(hdcp->auth.msg.hdcp2.ake_init)); return status; } enum mod_hdcp_status mod_hdcp_write_no_stored_km(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM, hdcp->auth.msg.hdcp2.ake_no_stored_km+1, sizeof(hdcp->auth.msg.hdcp2.ake_no_stored_km)-1); else status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM, hdcp->auth.msg.hdcp2.ake_no_stored_km, sizeof(hdcp->auth.msg.hdcp2.ake_no_stored_km)); return status; } enum mod_hdcp_status mod_hdcp_write_stored_km(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM, hdcp->auth.msg.hdcp2.ake_stored_km+1, sizeof(hdcp->auth.msg.hdcp2.ake_stored_km)-1); else status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM, hdcp->auth.msg.hdcp2.ake_stored_km, sizeof(hdcp->auth.msg.hdcp2.ake_stored_km)); return status; } enum mod_hdcp_status mod_hdcp_write_lc_init(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_LC_INIT, hdcp->auth.msg.hdcp2.lc_init+1, sizeof(hdcp->auth.msg.hdcp2.lc_init)-1); else status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_LC_INIT, hdcp->auth.msg.hdcp2.lc_init, sizeof(hdcp->auth.msg.hdcp2.lc_init)); return status; } enum mod_hdcp_status mod_hdcp_write_eks(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS, hdcp->auth.msg.hdcp2.ske_eks+1, sizeof(hdcp->auth.msg.hdcp2.ske_eks)-1); else status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS, hdcp->auth.msg.hdcp2.ske_eks, sizeof(hdcp->auth.msg.hdcp2.ske_eks)); return status; } enum mod_hdcp_status mod_hdcp_write_repeater_auth_ack(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK, hdcp->auth.msg.hdcp2.repeater_auth_ack+1, sizeof(hdcp->auth.msg.hdcp2.repeater_auth_ack)-1); else status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK, hdcp->auth.msg.hdcp2.repeater_auth_ack, sizeof(hdcp->auth.msg.hdcp2.repeater_auth_ack)); return status; } enum mod_hdcp_status mod_hdcp_write_stream_manage(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE, hdcp->auth.msg.hdcp2.repeater_auth_stream_manage+1, hdcp->auth.msg.hdcp2.stream_manage_size-1); else status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE, hdcp->auth.msg.hdcp2.repeater_auth_stream_manage, hdcp->auth.msg.hdcp2.stream_manage_size); return status; } enum mod_hdcp_status mod_hdcp_write_content_type(struct mod_hdcp *hdcp) { enum mod_hdcp_status status; if (is_dp_hdcp(hdcp)) status = write(hdcp, MOD_HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE, hdcp->auth.msg.hdcp2.content_stream_type_dp+1, sizeof(hdcp->auth.msg.hdcp2.content_stream_type_dp)-1); else status = MOD_HDCP_STATUS_INVALID_OPERATION; return status; } enum mod_hdcp_status mod_hdcp_clear_cp_irq_status(struct mod_hdcp *hdcp) { uint8_t clear_cp_irq_bit = DP_CP_IRQ; uint32_t size = 1; if (is_dp_hdcp(hdcp)) { uint32_t cp_irq_addrs = (hdcp->connection.link.dp.rev >= 0x14) ? DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0:DP_DEVICE_SERVICE_IRQ_VECTOR; return hdcp->config.ddc.funcs.write_dpcd(hdcp->config.ddc.handle, cp_irq_addrs, &clear_cp_irq_bit, size) ? MOD_HDCP_STATUS_SUCCESS : MOD_HDCP_STATUS_DDC_FAILURE; } return MOD_HDCP_STATUS_INVALID_OPERATION; }