/* SPDX-License-Identifier: (GPL-2.0+) */ /* * Copyright © 2017-2019 Intel Corporation * * Authors: * Ramalingam C <[email protected]> */ #ifndef _I915_HDCP_INTERFACE_H_ #define _I915_HDCP_INTERFACE_H_ #include <linux/mutex.h> #include <linux/device.h> #include <drm/display/drm_hdcp.h> /** * enum hdcp_port_type - HDCP port implementation type defined by ME/GSC FW * @HDCP_PORT_TYPE_INVALID: Invalid hdcp port type * @HDCP_PORT_TYPE_INTEGRATED: In-Host HDCP2.x port * @HDCP_PORT_TYPE_LSPCON: HDCP2.2 discrete wired Tx port with LSPCON * (HDMI 2.0) solution * @HDCP_PORT_TYPE_CPDP: HDCP2.2 discrete wired Tx port using the CPDP (DP 1.3) * solution */ enum hdcp_port_type { … }; /** * enum hdcp_wired_protocol - HDCP adaptation used on the port * @HDCP_PROTOCOL_INVALID: Invalid HDCP adaptation protocol * @HDCP_PROTOCOL_HDMI: HDMI adaptation of HDCP used on the port * @HDCP_PROTOCOL_DP: DP adaptation of HDCP used on the port */ enum hdcp_wired_protocol { … }; enum hdcp_ddi { … }; /** * enum hdcp_transcoder - ME/GSC Firmware defined index for transcoders * @HDCP_INVALID_TRANSCODER: Index for Invalid transcoder * @HDCP_TRANSCODER_EDP: Index for EDP Transcoder * @HDCP_TRANSCODER_DSI0: Index for DSI0 Transcoder * @HDCP_TRANSCODER_DSI1: Index for DSI1 Transcoder * @HDCP_TRANSCODER_A: Index for Transcoder A * @HDCP_TRANSCODER_B: Index for Transcoder B * @HDCP_TRANSCODER_C: Index for Transcoder C * @HDCP_TRANSCODER_D: Index for Transcoder D */ enum hdcp_transcoder { … }; /** * struct hdcp_port_data - intel specific HDCP port data * @hdcp_ddi: ddi index as per ME/GSC FW * @hdcp_transcoder: transcoder index as per ME/GSC FW * @port_type: HDCP port type as per ME/GSC FW classification * @protocol: HDCP adaptation as per ME/GSC FW * @k: No of streams transmitted on a port. Only on DP MST this is != 1 * @seq_num_m: Count of RepeaterAuth_Stream_Manage msg propagated. * Initialized to 0 on AKE_INIT. Incremented after every successful * transmission of RepeaterAuth_Stream_Manage message. When it rolls * over re-Auth has to be triggered. * @streams: struct hdcp2_streamid_type[k]. Defines the type and id for the * streams */ struct hdcp_port_data { … }; /** * struct i915_hdcp_ops- ops for HDCP2.2 services. * @owner: Module providing the ops * @initiate_hdcp2_session: Initiate a Wired HDCP2.2 Tx Session. * And Prepare AKE_Init. * @verify_receiver_cert_prepare_km: Verify the Receiver Certificate * AKE_Send_Cert and prepare * AKE_Stored_Km/AKE_No_Stored_Km * @verify_hprime: Verify AKE_Send_H_prime * @store_pairing_info: Store pairing info received * @initiate_locality_check: Prepare LC_Init * @verify_lprime: Verify lprime * @get_session_key: Prepare SKE_Send_Eks * @repeater_check_flow_prepare_ack: Validate the Downstream topology * and prepare rep_ack * @verify_mprime: Verify mprime * @enable_hdcp_authentication: Mark a port as authenticated. * @close_hdcp_session: Close the Wired HDCP Tx session per port. * This also disables the authenticated state of the port. */ struct i915_hdcp_ops { … }; /** * struct i915_hdcp_arbiter - Used for communication between i915 * and hdcp drivers for the HDCP2.2 services */ struct i915_hdcp_arbiter { … }; /* fw_hdcp_status: Enumeration of all HDCP Status Codes */ enum fw_hdcp_status { … }; #define HDCP_API_VERSION … #define HDCP_M_LEN … #define HDCP_KH_LEN … /* Payload Buffer size(Excluding Header) for CMDs and corresponding response */ /* Wired_Tx_AKE */ #define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN … #define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_OUT … #define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN … #define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MIN_OUT … #define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MAX_OUT … #define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN … #define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_OUT … #define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN … #define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_OUT … #define WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN … #define WIRED_CMD_BUF_LEN_CLOSE_SESSION_OUT … /* Wired_Tx_LC */ #define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN … #define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_OUT … #define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN … #define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_OUT … /* Wired_Tx_SKE */ #define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN … #define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_OUT … /* Wired_Tx_SKE */ #define WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN … #define WIRED_CMD_BUF_LEN_ENABLE_AUTH_OUT … /* Wired_Tx_Repeater */ #define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN … #define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_OUT … #define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN … #define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_OUT … /* hdcp_command_id: Enumeration of all WIRED HDCP Command IDs */ enum hdcp_command_id { … }; encrypted_buff; /* HDCP HECI message header. All header values are little endian. */ struct hdcp_cmd_header { … } __packed; /* Empty command request or response. No data follows the header. */ struct hdcp_cmd_no_data { … } __packed; /* Uniquely identifies the hdcp port being addressed for a given command. */ struct hdcp_port_id { … } __packed; /* * Data structures for integrated wired HDCP2 Tx in * support of the AKE protocol */ /* HECI struct for integrated wired HDCP Tx session initiation. */ struct wired_cmd_initiate_hdcp2_session_in { … } __packed; struct wired_cmd_initiate_hdcp2_session_out { … } __packed; /* HECI struct for ending an integrated wired HDCP Tx session. */ struct wired_cmd_close_session_in { … } __packed; struct wired_cmd_close_session_out { … } __packed; /* HECI struct for integrated wired HDCP Tx Rx Cert verification. */ struct wired_cmd_verify_receiver_cert_in { … } __packed; struct wired_cmd_verify_receiver_cert_out { … } __packed; /* HECI struct for verification of Rx's Hprime in a HDCP Tx session */ struct wired_cmd_ake_send_hprime_in { … } __packed; struct wired_cmd_ake_send_hprime_out { … } __packed; /* * HECI struct for sending in AKE pairing data generated by the Rx in an * integrated wired HDCP Tx session. */ struct wired_cmd_ake_send_pairing_info_in { … } __packed; struct wired_cmd_ake_send_pairing_info_out { … } __packed; /* Data structures for integrated wired HDCP2 Tx in support of the LC protocol*/ /* * HECI struct for initiating locality check with an * integrated wired HDCP Tx session. */ struct wired_cmd_init_locality_check_in { … } __packed; struct wired_cmd_init_locality_check_out { … } __packed; /* * HECI struct for validating an Rx's LPrime value in an * integrated wired HDCP Tx session. */ struct wired_cmd_validate_locality_in { … } __packed; struct wired_cmd_validate_locality_out { … } __packed; /* * Data structures for integrated wired HDCP2 Tx in support of the * SKE protocol */ /* HECI struct for creating session key */ struct wired_cmd_get_session_key_in { … } __packed; struct wired_cmd_get_session_key_out { … } __packed; /* HECI struct for the Tx enable authentication command */ struct wired_cmd_enable_auth_in { … } __packed; struct wired_cmd_enable_auth_out { … } __packed; /* * Data structures for integrated wired HDCP2 Tx in support of * the repeater protocols */ /* * HECI struct for verifying the downstream repeater's HDCP topology in an * integrated wired HDCP Tx session. */ struct wired_cmd_verify_repeater_in { … } __packed; struct wired_cmd_verify_repeater_out { … } __packed; /* * HECI struct in support of stream management in an * integrated wired HDCP Tx session. */ struct wired_cmd_repeater_auth_stream_req_in { … } __packed; struct wired_cmd_repeater_auth_stream_req_out { … } __packed; #endif /* _I915_HDCP_INTERFACE_H_ */
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