/* SPDX-License-Identifier: MIT */ /* * Copyright (C) 2017 Google, Inc. * * Authors: * Sean Paul <[email protected]> */ #ifndef _DRM_HDCP_H_ #define _DRM_HDCP_H_ #include <linux/types.h> /* Period of hdcp checks (to ensure we're still authenticated) */ #define DRM_HDCP_CHECK_PERIOD_MS … #define DRM_HDCP2_CHECK_PERIOD_MS … /* Shared lengths/masks between HDMI/DVI/DisplayPort */ #define DRM_HDCP_AN_LEN … #define DRM_HDCP_BSTATUS_LEN … #define DRM_HDCP_KSV_LEN … #define DRM_HDCP_RI_LEN … #define DRM_HDCP_V_PRIME_PART_LEN … #define DRM_HDCP_V_PRIME_NUM_PARTS … #define DRM_HDCP_NUM_DOWNSTREAM(x) … #define DRM_HDCP_MAX_CASCADE_EXCEEDED(x) … #define DRM_HDCP_MAX_DEVICE_EXCEEDED(x) … /* Slave address for the HDCP registers in the receiver */ #define DRM_HDCP_DDC_ADDR … /* Value to use at the end of the SHA-1 bytestream used for repeaters */ #define DRM_HDCP_SHA1_TERMINATOR … /* HDCP register offsets for HDMI/DVI devices */ #define DRM_HDCP_DDC_BKSV … #define DRM_HDCP_DDC_RI_PRIME … #define DRM_HDCP_DDC_AKSV … #define DRM_HDCP_DDC_AN … #define DRM_HDCP_DDC_V_PRIME(h) … #define DRM_HDCP_DDC_BCAPS … #define DRM_HDCP_DDC_BCAPS_REPEATER_PRESENT … #define DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY … #define DRM_HDCP_DDC_BSTATUS … #define DRM_HDCP_DDC_KSV_FIFO … #define DRM_HDCP_1_4_SRM_ID … #define DRM_HDCP_1_4_VRL_LENGTH_SIZE … #define DRM_HDCP_1_4_DCP_SIG_SIZE … /* 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 … #define HDCP_STREAM_TYPE1 … /* HDCP2.2 Msg IDs */ #define HDCP_2_2_NULL_MSG … #define HDCP_2_2_AKE_INIT … #define HDCP_2_2_AKE_SEND_CERT … #define HDCP_2_2_AKE_NO_STORED_KM … #define HDCP_2_2_AKE_STORED_KM … #define HDCP_2_2_AKE_SEND_HPRIME … #define HDCP_2_2_AKE_SEND_PAIRING_INFO … #define HDCP_2_2_LC_INIT … #define HDCP_2_2_LC_SEND_LPRIME … #define HDCP_2_2_SKE_SEND_EKS … #define HDCP_2_2_REP_SEND_RECVID_LIST … #define HDCP_2_2_REP_SEND_ACK … #define HDCP_2_2_REP_STREAM_MANAGE … #define HDCP_2_2_REP_STREAM_READY … #define HDCP_2_2_RTX_LEN … #define HDCP_2_2_RRX_LEN … #define HDCP_2_2_K_PUB_RX_MOD_N_LEN … #define HDCP_2_2_K_PUB_RX_EXP_E_LEN … #define HDCP_2_2_K_PUB_RX_LEN … #define HDCP_2_2_DCP_LLC_SIG_LEN … #define HDCP_2_2_E_KPUB_KM_LEN … #define HDCP_2_2_E_KH_KM_M_LEN … #define HDCP_2_2_H_PRIME_LEN … #define HDCP_2_2_E_KH_KM_LEN … #define HDCP_2_2_RN_LEN … #define HDCP_2_2_L_PRIME_LEN … #define HDCP_2_2_E_DKEY_KS_LEN … #define HDCP_2_2_RIV_LEN … #define HDCP_2_2_SEQ_NUM_LEN … #define HDCP_2_2_V_PRIME_HALF_LEN … #define HDCP_2_2_RECEIVER_ID_LEN … #define HDCP_2_2_MAX_DEVICE_COUNT … #define HDCP_2_2_RECEIVER_IDS_MAX_LEN … #define HDCP_2_2_MPRIME_LEN … /* 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 … #define HDCP_2_2_TXCAP_MASK_LEN … #define HDCP_2_2_RXCAPS_LEN … #define HDCP_2_2_RX_REPEATER(x) … #define HDCP_2_2_DP_HDCP_CAPABLE(x) … #define HDCP_2_2_RXINFO_LEN … /* HDCP1.x compliant device in downstream */ #define HDCP_2_2_HDCP1_DEVICE_CONNECTED(x) … /* HDCP2.0 Compliant repeater in downstream */ #define HDCP_2_2_HDCP_2_0_REP_CONNECTED(x) … #define HDCP_2_2_MAX_CASCADE_EXCEEDED(x) … #define HDCP_2_2_MAX_DEVS_EXCEEDED(x) … #define HDCP_2_2_DEV_COUNT_LO(x) … #define HDCP_2_2_DEV_COUNT_HI(x) … #define HDCP_2_2_DEPTH(x) … struct hdcp2_cert_rx { … } __packed; struct hdcp2_streamid_type { … } __packed; /* * The TxCaps field specified in the HDCP HDMI, DP specs * This field is big endian as specified in the errata. */ struct hdcp2_tx_caps { … } __packed; /* Main structures for HDCP2.2 protocol communication */ struct hdcp2_ake_init { … } __packed; struct hdcp2_ake_send_cert { … } __packed; struct hdcp2_ake_no_stored_km { … } __packed; struct hdcp2_ake_stored_km { … } __packed; struct hdcp2_ake_send_hprime { … } __packed; struct hdcp2_ake_send_pairing_info { … } __packed; struct hdcp2_lc_init { … } __packed; struct hdcp2_lc_send_lprime { … } __packed; struct hdcp2_ske_send_eks { … } __packed; struct hdcp2_rep_send_receiverid_list { … } __packed; struct hdcp2_rep_send_ack { … } __packed; struct hdcp2_rep_stream_manage { … } __packed; struct hdcp2_rep_stream_ready { … } __packed; /* HDCP2.2 TIMEOUTs in mSec */ #define HDCP_2_2_CERT_TIMEOUT_MS … #define HDCP_2_2_DP_CERT_READ_TIMEOUT_MS … #define HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS … #define HDCP_2_2_HPRIME_PAIRED_TIMEOUT_MS … #define HDCP_2_2_DP_HPRIME_READ_TIMEOUT_MS … #define HDCP_2_2_PAIRING_TIMEOUT_MS … #define HDCP_2_2_DP_PAIRING_READ_TIMEOUT_MS … #define HDCP_2_2_HDMI_LPRIME_TIMEOUT_MS … #define HDCP_2_2_DP_LPRIME_TIMEOUT_MS … #define HDCP_2_2_RECVID_LIST_TIMEOUT_MS … #define HDCP_2_2_STREAM_READY_TIMEOUT_MS … /* HDMI HDCP2.2 Register Offsets */ #define HDCP_2_2_HDMI_REG_VER_OFFSET … #define HDCP_2_2_HDMI_REG_WR_MSG_OFFSET … #define HDCP_2_2_HDMI_REG_RXSTATUS_OFFSET … #define HDCP_2_2_HDMI_REG_RD_MSG_OFFSET … #define HDCP_2_2_HDMI_REG_DBG_OFFSET … #define HDCP_2_2_HDMI_SUPPORT_MASK … #define HDCP_2_2_RX_CAPS_VERSION_VAL … #define HDCP_2_2_SEQ_NUM_MAX … #define HDCP_2_2_DELAY_BEFORE_ENCRYPTION_EN … /* Below macros take a byte at a time and mask the bit(s) */ #define HDCP_2_2_HDMI_RXSTATUS_LEN … #define HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(x) … #define HDCP_2_2_HDMI_RXSTATUS_READY(x) … #define HDCP_2_2_HDMI_RXSTATUS_REAUTH_REQ(x) … /* * Helper functions to convert 24bit big endian hdcp sequence number to * host format and back */ static inline u32 drm_hdcp_be24_to_cpu(const u8 seq_num[HDCP_2_2_SEQ_NUM_LEN]) { … } static inline void drm_hdcp_cpu_to_be24(u8 seq_num[HDCP_2_2_SEQ_NUM_LEN], u32 val) { … } #define DRM_HDCP_SRM_GEN1_MAX_BYTES … #define DRM_HDCP_1_4_SRM_ID … #define DRM_HDCP_SRM_ID_MASK … #define DRM_HDCP_1_4_VRL_LENGTH_SIZE … #define DRM_HDCP_1_4_DCP_SIG_SIZE … #define DRM_HDCP_2_SRM_ID … #define DRM_HDCP_2_INDICATOR … #define DRM_HDCP_2_INDICATOR_MASK … #define DRM_HDCP_2_VRL_LENGTH_SIZE … #define DRM_HDCP_2_DCP_SIG_SIZE … #define DRM_HDCP_2_NO_OF_DEV_PLUS_RESERVED_SZ … #define DRM_HDCP_2_KSV_COUNT_2_LSBITS(byte) … struct hdcp_srm_header { … } __packed; /* Content Type classification for HDCP2.2 vs others */ #define DRM_MODE_HDCP_CONTENT_TYPE0 … #define DRM_MODE_HDCP_CONTENT_TYPE1 … #endif
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