369 lines
11 KiB
C
369 lines
11 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright © 2019 Intel Corporation
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*
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* Authors:
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* Ramalingam C <ramalingam.c@intel.com>
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*/
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#ifndef __MEI_HDCP_H__
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#define __MEI_HDCP_H__
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#include <drm/display/drm_hdcp.h>
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/* me_hdcp_status: Enumeration of all HDCP Status Codes */
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enum me_hdcp_status {
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ME_HDCP_STATUS_SUCCESS = 0x0000,
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/* WiDi Generic Status Codes */
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ME_HDCP_STATUS_INTERNAL_ERROR = 0x1000,
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ME_HDCP_STATUS_UNKNOWN_ERROR = 0x1001,
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ME_HDCP_STATUS_INCORRECT_API_VERSION = 0x1002,
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ME_HDCP_STATUS_INVALID_FUNCTION = 0x1003,
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ME_HDCP_STATUS_INVALID_BUFFER_LENGTH = 0x1004,
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ME_HDCP_STATUS_INVALID_PARAMS = 0x1005,
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ME_HDCP_STATUS_AUTHENTICATION_FAILED = 0x1006,
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/* WiDi Status Codes */
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ME_HDCP_INVALID_SESSION_STATE = 0x6000,
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ME_HDCP_SRM_FRAGMENT_UNEXPECTED = 0x6001,
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ME_HDCP_SRM_INVALID_LENGTH = 0x6002,
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ME_HDCP_SRM_FRAGMENT_OFFSET_INVALID = 0x6003,
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ME_HDCP_SRM_VERIFICATION_FAILED = 0x6004,
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ME_HDCP_SRM_VERSION_TOO_OLD = 0x6005,
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ME_HDCP_RX_CERT_VERIFICATION_FAILED = 0x6006,
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ME_HDCP_RX_REVOKED = 0x6007,
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ME_HDCP_H_VERIFICATION_FAILED = 0x6008,
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ME_HDCP_REPEATER_CHECK_UNEXPECTED = 0x6009,
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ME_HDCP_TOPOLOGY_MAX_EXCEEDED = 0x600A,
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ME_HDCP_V_VERIFICATION_FAILED = 0x600B,
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ME_HDCP_L_VERIFICATION_FAILED = 0x600C,
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ME_HDCP_STREAM_KEY_ALLOC_FAILED = 0x600D,
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ME_HDCP_BASE_KEY_RESET_FAILED = 0x600E,
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ME_HDCP_NONCE_GENERATION_FAILED = 0x600F,
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ME_HDCP_STATUS_INVALID_E_KEY_STATE = 0x6010,
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ME_HDCP_STATUS_INVALID_CS_ICV = 0x6011,
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ME_HDCP_STATUS_INVALID_KB_KEY_STATE = 0x6012,
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ME_HDCP_STATUS_INVALID_PAVP_MODE_ICV = 0x6013,
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ME_HDCP_STATUS_INVALID_PAVP_MODE = 0x6014,
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ME_HDCP_STATUS_LC_MAX_ATTEMPTS = 0x6015,
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/* New status for HDCP 2.1 */
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ME_HDCP_STATUS_MISMATCH_IN_M = 0x6016,
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/* New status code for HDCP 2.2 Rx */
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ME_HDCP_STATUS_RX_PROV_NOT_ALLOWED = 0x6017,
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ME_HDCP_STATUS_RX_PROV_WRONG_SUBJECT = 0x6018,
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ME_HDCP_RX_NEEDS_PROVISIONING = 0x6019,
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ME_HDCP_BKSV_ICV_AUTH_FAILED = 0x6020,
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ME_HDCP_STATUS_INVALID_STREAM_ID = 0x6021,
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ME_HDCP_STATUS_CHAIN_NOT_INITIALIZED = 0x6022,
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ME_HDCP_FAIL_NOT_EXPECTED = 0x6023,
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ME_HDCP_FAIL_HDCP_OFF = 0x6024,
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ME_HDCP_FAIL_INVALID_PAVP_MEMORY_MODE = 0x6025,
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ME_HDCP_FAIL_AES_ECB_FAILURE = 0x6026,
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ME_HDCP_FEATURE_NOT_SUPPORTED = 0x6027,
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ME_HDCP_DMA_READ_ERROR = 0x6028,
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ME_HDCP_DMA_WRITE_ERROR = 0x6029,
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ME_HDCP_FAIL_INVALID_PACKET_SIZE = 0x6030,
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ME_HDCP_H264_PARSING_ERROR = 0x6031,
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ME_HDCP_HDCP2_ERRATA_VIDEO_VIOLATION = 0x6032,
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ME_HDCP_HDCP2_ERRATA_AUDIO_VIOLATION = 0x6033,
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ME_HDCP_TX_ACTIVE_ERROR = 0x6034,
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ME_HDCP_MODE_CHANGE_ERROR = 0x6035,
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ME_HDCP_STREAM_TYPE_ERROR = 0x6036,
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ME_HDCP_STREAM_MANAGE_NOT_POSSIBLE = 0x6037,
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ME_HDCP_STATUS_PORT_INVALID_COMMAND = 0x6038,
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ME_HDCP_STATUS_UNSUPPORTED_PROTOCOL = 0x6039,
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ME_HDCP_STATUS_INVALID_PORT_INDEX = 0x603a,
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ME_HDCP_STATUS_TX_AUTH_NEEDED = 0x603b,
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ME_HDCP_STATUS_NOT_INTEGRATED_PORT = 0x603c,
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ME_HDCP_STATUS_SESSION_MAX_REACHED = 0x603d,
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/* hdcp capable bit is not set in rx_caps(error is unique to DP) */
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ME_HDCP_STATUS_NOT_HDCP_CAPABLE = 0x6041,
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ME_HDCP_STATUS_INVALID_STREAM_COUNT = 0x6042,
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};
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#define HDCP_API_VERSION 0x00010000
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#define HDCP_M_LEN 16
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#define HDCP_KH_LEN 16
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/* Payload Buffer size(Excluding Header) for CMDs and corresponding response */
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/* Wired_Tx_AKE */
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#define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN (4 + 1)
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#define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_OUT (4 + 8 + 3)
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#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN (4 + 522 + 8 + 3)
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#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MIN_OUT (4 + 1 + 3 + 16 + 16)
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#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MAX_OUT (4 + 1 + 3 + 128)
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#define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN (4 + 32)
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#define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_OUT (4)
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#define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN (4 + 16)
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#define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_OUT (4)
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#define WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN (4)
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#define WIRED_CMD_BUF_LEN_CLOSE_SESSION_OUT (4)
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/* Wired_Tx_LC */
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#define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN (4)
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#define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_OUT (4 + 8)
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#define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN (4 + 32)
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#define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_OUT (4)
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/* Wired_Tx_SKE */
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#define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN (4)
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#define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_OUT (4 + 16 + 8)
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/* Wired_Tx_SKE */
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#define WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN (4 + 1)
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#define WIRED_CMD_BUF_LEN_ENABLE_AUTH_OUT (4)
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/* Wired_Tx_Repeater */
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#define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN (4 + 2 + 3 + 16 + 155)
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#define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_OUT (4 + 1 + 16)
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#define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN (4 + 3 + \
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32 + 2 + 2)
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#define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_OUT (4)
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/* hdcp_command_id: Enumeration of all WIRED HDCP Command IDs */
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enum hdcp_command_id {
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_WIDI_COMMAND_BASE = 0x00030000,
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WIDI_INITIATE_HDCP2_SESSION = _WIDI_COMMAND_BASE,
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HDCP_GET_SRM_STATUS,
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HDCP_SEND_SRM_FRAGMENT,
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/* The wired HDCP Tx commands */
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_WIRED_COMMAND_BASE = 0x00031000,
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WIRED_INITIATE_HDCP2_SESSION = _WIRED_COMMAND_BASE,
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WIRED_VERIFY_RECEIVER_CERT,
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WIRED_AKE_SEND_HPRIME,
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WIRED_AKE_SEND_PAIRING_INFO,
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WIRED_INIT_LOCALITY_CHECK,
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WIRED_VALIDATE_LOCALITY,
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WIRED_GET_SESSION_KEY,
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WIRED_ENABLE_AUTH,
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WIRED_VERIFY_REPEATER,
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WIRED_REPEATER_AUTH_STREAM_REQ,
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WIRED_CLOSE_SESSION,
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_WIRED_COMMANDS_COUNT,
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};
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union encrypted_buff {
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u8 e_kpub_km[HDCP_2_2_E_KPUB_KM_LEN];
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u8 e_kh_km_m[HDCP_2_2_E_KH_KM_M_LEN];
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struct {
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u8 e_kh_km[HDCP_KH_LEN];
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u8 m[HDCP_M_LEN];
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} __packed;
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};
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/* HDCP HECI message header. All header values are little endian. */
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struct hdcp_cmd_header {
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u32 api_version;
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u32 command_id;
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enum me_hdcp_status status;
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/* Length of the HECI message (excluding the header) */
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u32 buffer_len;
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} __packed;
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/* Empty command request or response. No data follows the header. */
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struct hdcp_cmd_no_data {
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struct hdcp_cmd_header header;
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} __packed;
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/* Uniquely identifies the hdcp port being addressed for a given command. */
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struct hdcp_port_id {
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u8 integrated_port_type;
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/* physical_port is used until Gen11.5. Must be zero for Gen11.5+ */
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u8 physical_port;
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/* attached_transcoder is for Gen11.5+. Set to zero for <Gen11.5 */
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u8 attached_transcoder;
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u8 reserved;
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} __packed;
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/*
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* Data structures for integrated wired HDCP2 Tx in
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* support of the AKE protocol
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*/
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/* HECI struct for integrated wired HDCP Tx session initiation. */
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struct wired_cmd_initiate_hdcp2_session_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 protocol; /* for HDMI vs DP */
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} __packed;
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struct wired_cmd_initiate_hdcp2_session_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 r_tx[HDCP_2_2_RTX_LEN];
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struct hdcp2_tx_caps tx_caps;
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} __packed;
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/* HECI struct for ending an integrated wired HDCP Tx session. */
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struct wired_cmd_close_session_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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} __packed;
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struct wired_cmd_close_session_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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} __packed;
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/* HECI struct for integrated wired HDCP Tx Rx Cert verification. */
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struct wired_cmd_verify_receiver_cert_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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struct hdcp2_cert_rx cert_rx;
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u8 r_rx[HDCP_2_2_RRX_LEN];
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u8 rx_caps[HDCP_2_2_RXCAPS_LEN];
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} __packed;
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struct wired_cmd_verify_receiver_cert_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 km_stored;
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u8 reserved[3];
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union encrypted_buff ekm_buff;
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} __packed;
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/* HECI struct for verification of Rx's Hprime in a HDCP Tx session */
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struct wired_cmd_ake_send_hprime_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 h_prime[HDCP_2_2_H_PRIME_LEN];
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} __packed;
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struct wired_cmd_ake_send_hprime_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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} __packed;
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/*
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* HECI struct for sending in AKE pairing data generated by the Rx in an
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* integrated wired HDCP Tx session.
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*/
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struct wired_cmd_ake_send_pairing_info_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 e_kh_km[HDCP_2_2_E_KH_KM_LEN];
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} __packed;
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struct wired_cmd_ake_send_pairing_info_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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} __packed;
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/* Data structures for integrated wired HDCP2 Tx in support of the LC protocol*/
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/*
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* HECI struct for initiating locality check with an
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* integrated wired HDCP Tx session.
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*/
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struct wired_cmd_init_locality_check_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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} __packed;
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struct wired_cmd_init_locality_check_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 r_n[HDCP_2_2_RN_LEN];
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} __packed;
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/*
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* HECI struct for validating an Rx's LPrime value in an
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* integrated wired HDCP Tx session.
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*/
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struct wired_cmd_validate_locality_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 l_prime[HDCP_2_2_L_PRIME_LEN];
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} __packed;
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struct wired_cmd_validate_locality_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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} __packed;
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/*
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* Data structures for integrated wired HDCP2 Tx in support of the
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* SKE protocol
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*/
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/* HECI struct for creating session key */
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struct wired_cmd_get_session_key_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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} __packed;
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struct wired_cmd_get_session_key_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 e_dkey_ks[HDCP_2_2_E_DKEY_KS_LEN];
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u8 r_iv[HDCP_2_2_RIV_LEN];
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} __packed;
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/* HECI struct for the Tx enable authentication command */
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struct wired_cmd_enable_auth_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 stream_type;
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} __packed;
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struct wired_cmd_enable_auth_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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} __packed;
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/*
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* Data structures for integrated wired HDCP2 Tx in support of
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* the repeater protocols
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*/
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/*
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* HECI struct for verifying the downstream repeater's HDCP topology in an
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* integrated wired HDCP Tx session.
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*/
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struct wired_cmd_verify_repeater_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 rx_info[HDCP_2_2_RXINFO_LEN];
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u8 seq_num_v[HDCP_2_2_SEQ_NUM_LEN];
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u8 v_prime[HDCP_2_2_V_PRIME_HALF_LEN];
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u8 receiver_ids[HDCP_2_2_RECEIVER_IDS_MAX_LEN];
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} __packed;
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struct wired_cmd_verify_repeater_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 content_type_supported;
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u8 v[HDCP_2_2_V_PRIME_HALF_LEN];
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} __packed;
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/*
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* HECI struct in support of stream management in an
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* integrated wired HDCP Tx session.
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*/
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struct wired_cmd_repeater_auth_stream_req_in {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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u8 seq_num_m[HDCP_2_2_SEQ_NUM_LEN];
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u8 m_prime[HDCP_2_2_MPRIME_LEN];
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__be16 k;
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struct hdcp2_streamid_type streams[];
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} __packed;
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struct wired_cmd_repeater_auth_stream_req_out {
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struct hdcp_cmd_header header;
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struct hdcp_port_id port;
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} __packed;
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#endif /* __MEI_HDCP_H__ */
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