MAJOR=4 MINOR=12 DEVNAME=tty12 ˆÆÅ ƒyÆÝ¿ÁÃ!Ñ/* SPDX-License-Identifier: MIT */ /* * Copyright (C) 2017 Google, Inc. * * Authors: * Sean Paul */ #ifndef _DRM_HDCP_H_ #define _DRM_HDCP_H_ #include /* Period of hdcp checks (to ensure we're still authenticated) */ #define DRM_HDCP_CHECK_PERIOD_MS (128 * 16) #define DRM_HDCP2_CHECK_PERIOD_MS 500 /* Shared lengths/masks between HDMI/DVI/DisplayPort */ #define DRM_HDCP_AN_LEN 8 #define DRM_HDCP_BSTATUS_LEN 2 #define DRM_HDCP_KSV_LEN 5 #define DRM_HDCP_RI_LEN 2 #define DRM_HDCP_V_PRIME_PART_LEN 4 #define DRM_HDCP_V_PRIME_NUM_PARTS 5 #define DRM_HDCP_NUM_DOWNSTREAM(x) (x & 0x7f) #define DRM_HDCP_MAX_CASCADE_EXCEEDED(x) (x & BIT(3)) #define DRM_HDCP_MAX_DEVICE_EXCEEDED(x) (x & BIT(7)) /* Slave address for the HDCP registers in the receiver */ #define DRM_HDCP_DDC_ADDR 0x3A /* Value to use at the end of the SHA-1 bytestream used for repeaters */ #define DRM_HDCP_SHA1_TERMINATOR 0x80 /* HDCP register offsets for HDMI/DVI devices */ #define DRM_HDCP_DDC_BKSV 0x00 #define DRM_HDCP_DDC_RI_PRIME 0x08 #define DRM_HDCP_DDC_AKSV 0x10 #define DRM_HDCP_DDC_AN 0x18 #define DRM_HDCP_DDC_V_PRIME(h) (0x20 + h * 4) #define DRM_HDCP_DDC_BCAPS 0x40 #define DRM_HDCP_DDC_BCAPS_REPEATER_PRESENT BIT(6) #define DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY BIT(5) #define DRM_HDCP_DDC_BSTATUS 0x41 #define DRM_HDCP_DDC_KSV_FIFO 0x43 #define DRM_HDCP_1_4_SRM_ID 0x8 #define DRM_HDCP_1_4_VRL_LENGTH_SIZE 3 #define DRM_HDCP_1_4_DCP_SIG_SIZE 40 /* Protocol message definition for HDCP2.2 specification */ /* * Protected content streams are classified into 2 types: * - Type0: Can be transmitted with HDCP 1.4+ * - Type1: Can be transmitted with HDCP 2.2+ */ #define HDCP_STREAM_TYPE0 0x00 #define HDCP_STREAM_TYPE1 0x01 /* HDCP2.2 Msg IDs */ #define HDCP_2_2_NULL_MSG 1 #define HDCP_2_2_AKE_INIT 2 #define HDCP_2_2_AKE_SEND_CERT 3 #define HDCP_2_2_AKE_NO_STORED_KM 4 #define HDCP_2_2_AKE_STORED_KM 5 #define HDCP_2_2_AKE_SEND_HPRIME 7 #define HDCP_2_2_AKE_SEND_PAIRING_INFO 8 #define HDCP_2_2_LC_INIT 9 #define HDCP_2_2_LC_SEND_LPRIME 10 #define HDCP_2_2_SKE_SEND_EKS 11 #define HDCP_2_2_REP_SEND_RECVID_LIST 12 #define HDCP_2_2_REP_SEND_ACK 15 #define HDCP_2_2_REP_STREAM_MANAGE 16 #define HDCP_2_2_REP_STREAM_READY 17 #define HDCP_2_2_RTX_LEN 8 #define HDCP_2_2_RRX_LEN 8 #define HDCP_2_2_K_PUB_RX_MOD_N_LEN 128 #define HDCP_2_2_K_PUB_RX_EXP_E_LEN 3 #define HDCP_2_2_K_PUB_RX_LEN (HDCP_2_2_K_PUB_RX_MOD_N_LEN + \ HDCP_2_2_K_PUB_RX_EXP_E_LEN) #define HDCP_2_2_DCP_LLC_SIG_LEN 384 #define HDCP_2_2_E_KPUB_KM_LEN 128 #define HDCP_2_2_E_KH_KM_M_LEN (16 + 16) #define HDCP_2_2_H_PRIME_LEN 32 #define HDCP_2_2_E_KH_KM_LEN 16 #define HDCP_2_2_RN_LEN 8 #define HDCP_2_2_L_PRIME_LEN 32 #define HDCP_2_2_E_DKEY_KS_LEN 16 #define HDCP_2_2_RIV_LEN 8 #define HDCP_2_2_SEQ_NUM_LEN 3 #define HDCP_2_2_V_PRIME_HALF_LEN (HDCP_2_2_L_PRIME_LEN / 2) #define HDCP_2_2_RECEIVER_ID_LEN DRM_HDCP_KSV_LEN #define HDCP_2_2_MAX_DEVICE_COUNT 31 #define HDCP_2_2_RECEIVER_IDS_MAX_LEN (HDCP_2_2_RECEIVER_ID_LEN * \ HDCP_2_2_MAX_DEVICE_COUNT) #define HDCP_2_2_MPRIME_LEN 32 /* Following Macros take a byte at a time for bit(s) masking */ /* * TODO: HDCP_2_2_MAX_CONTENT_STREAMS_CNT is based upon actual * H/W MST streams capacity. * This required to be moved out to platform specific header. */ #define HDCP_2_2_MAX_CONTENT_STREAMS_CNT 4 #define HDCP_2_2_TXCAP_MASK_LEN 2 #define HDCP_2_2_RXCAPS_LEN 3 #define HDCP_2_2_RX_REPEATER(x) ((x) & BIT(0)) #define HDCP_2_2_DP_HDCP_CAPABLE(x) ((x) & BIT(1)) #define HDCP_2_2_RXINFO_LEN 2 /* HDCP1.x compliant device in downstream */ #define HDCP_2_2_HDCP1_DEVICE_CONNECTED(x) ((x) & BIT(0)) /* HDCP2.0 Compliant repeater in downstream */ #define HDCP_2_2_HDCP_2_0_REP_CONNECTED(x) ((x) & BIT(1)) #define HDCP_2_2_MAX_CASCADE_EXCEEDED(x) ((x) & BIT(2)) #define HDCP_2_2_MAX_DEVS_EXCEEDED(x) ((x) & BIT(3)) #define HDCP_2_2_DEV_COUNT_LO(x) (((x) & (