diff options
Diffstat (limited to 'drivers/misc/mei/hdcp/mei_hdcp.h')
| -rw-r--r-- | drivers/misc/mei/hdcp/mei_hdcp.h | 368 |
1 files changed, 368 insertions, 0 deletions
diff --git a/drivers/misc/mei/hdcp/mei_hdcp.h b/drivers/misc/mei/hdcp/mei_hdcp.h new file mode 100644 index 000000000..834757f5e --- /dev/null +++ b/drivers/misc/mei/hdcp/mei_hdcp.h @@ -0,0 +1,368 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright © 2019 Intel Corporation + * + * Authors: + * Ramalingam C <ramalingam.c@intel.com> + */ + +#ifndef __MEI_HDCP_H__ +#define __MEI_HDCP_H__ + +#include <drm/drm_hdcp.h> + +/* me_hdcp_status: Enumeration of all HDCP Status Codes */ +enum me_hdcp_status { + ME_HDCP_STATUS_SUCCESS = 0x0000, + + /* WiDi Generic Status Codes */ + ME_HDCP_STATUS_INTERNAL_ERROR = 0x1000, + ME_HDCP_STATUS_UNKNOWN_ERROR = 0x1001, + ME_HDCP_STATUS_INCORRECT_API_VERSION = 0x1002, + ME_HDCP_STATUS_INVALID_FUNCTION = 0x1003, + ME_HDCP_STATUS_INVALID_BUFFER_LENGTH = 0x1004, + ME_HDCP_STATUS_INVALID_PARAMS = 0x1005, + ME_HDCP_STATUS_AUTHENTICATION_FAILED = 0x1006, + + /* WiDi Status Codes */ + ME_HDCP_INVALID_SESSION_STATE = 0x6000, + ME_HDCP_SRM_FRAGMENT_UNEXPECTED = 0x6001, + ME_HDCP_SRM_INVALID_LENGTH = 0x6002, + ME_HDCP_SRM_FRAGMENT_OFFSET_INVALID = 0x6003, + ME_HDCP_SRM_VERIFICATION_FAILED = 0x6004, + ME_HDCP_SRM_VERSION_TOO_OLD = 0x6005, + ME_HDCP_RX_CERT_VERIFICATION_FAILED = 0x6006, + ME_HDCP_RX_REVOKED = 0x6007, + ME_HDCP_H_VERIFICATION_FAILED = 0x6008, + ME_HDCP_REPEATER_CHECK_UNEXPECTED = 0x6009, + ME_HDCP_TOPOLOGY_MAX_EXCEEDED = 0x600A, + ME_HDCP_V_VERIFICATION_FAILED = 0x600B, + ME_HDCP_L_VERIFICATION_FAILED = 0x600C, + ME_HDCP_STREAM_KEY_ALLOC_FAILED = 0x600D, + ME_HDCP_BASE_KEY_RESET_FAILED = 0x600E, + ME_HDCP_NONCE_GENERATION_FAILED = 0x600F, + ME_HDCP_STATUS_INVALID_E_KEY_STATE = 0x6010, + ME_HDCP_STATUS_INVALID_CS_ICV = 0x6011, + ME_HDCP_STATUS_INVALID_KB_KEY_STATE = 0x6012, + ME_HDCP_STATUS_INVALID_PAVP_MODE_ICV = 0x6013, + ME_HDCP_STATUS_INVALID_PAVP_MODE = 0x6014, + ME_HDCP_STATUS_LC_MAX_ATTEMPTS = 0x6015, + + /* New status for HDCP 2.1 */ + ME_HDCP_STATUS_MISMATCH_IN_M = 0x6016, + + /* New status code for HDCP 2.2 Rx */ + ME_HDCP_STATUS_RX_PROV_NOT_ALLOWED = 0x6017, + ME_HDCP_STATUS_RX_PROV_WRONG_SUBJECT = 0x6018, + ME_HDCP_RX_NEEDS_PROVISIONING = 0x6019, + ME_HDCP_BKSV_ICV_AUTH_FAILED = 0x6020, + ME_HDCP_STATUS_INVALID_STREAM_ID = 0x6021, + ME_HDCP_STATUS_CHAIN_NOT_INITIALIZED = 0x6022, + ME_HDCP_FAIL_NOT_EXPECTED = 0x6023, + ME_HDCP_FAIL_HDCP_OFF = 0x6024, + ME_HDCP_FAIL_INVALID_PAVP_MEMORY_MODE = 0x6025, + ME_HDCP_FAIL_AES_ECB_FAILURE = 0x6026, + ME_HDCP_FEATURE_NOT_SUPPORTED = 0x6027, + ME_HDCP_DMA_READ_ERROR = 0x6028, + ME_HDCP_DMA_WRITE_ERROR = 0x6029, + ME_HDCP_FAIL_INVALID_PACKET_SIZE = 0x6030, + ME_HDCP_H264_PARSING_ERROR = 0x6031, + ME_HDCP_HDCP2_ERRATA_VIDEO_VIOLATION = 0x6032, + ME_HDCP_HDCP2_ERRATA_AUDIO_VIOLATION = 0x6033, + ME_HDCP_TX_ACTIVE_ERROR = 0x6034, + ME_HDCP_MODE_CHANGE_ERROR = 0x6035, + ME_HDCP_STREAM_TYPE_ERROR = 0x6036, + ME_HDCP_STREAM_MANAGE_NOT_POSSIBLE = 0x6037, + + ME_HDCP_STATUS_PORT_INVALID_COMMAND = 0x6038, + ME_HDCP_STATUS_UNSUPPORTED_PROTOCOL = 0x6039, + ME_HDCP_STATUS_INVALID_PORT_INDEX = 0x603a, + ME_HDCP_STATUS_TX_AUTH_NEEDED = 0x603b, + ME_HDCP_STATUS_NOT_INTEGRATED_PORT = 0x603c, + ME_HDCP_STATUS_SESSION_MAX_REACHED = 0x603d, + + /* hdcp capable bit is not set in rx_caps(error is unique to DP) */ + ME_HDCP_STATUS_NOT_HDCP_CAPABLE = 0x6041, + + ME_HDCP_STATUS_INVALID_STREAM_COUNT = 0x6042, +}; + +#define HDCP_API_VERSION 0x00010000 + +#define HDCP_M_LEN 16 +#define HDCP_KH_LEN 16 + +/* Payload Buffer size(Excluding Header) for CMDs and corresponding response */ +/* Wired_Tx_AKE */ +#define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN (4 + 1) +#define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_OUT (4 + 8 + 3) + +#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN (4 + 522 + 8 + 3) +#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MIN_OUT (4 + 1 + 3 + 16 + 16) +#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MAX_OUT (4 + 1 + 3 + 128) + +#define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN (4 + 32) +#define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_OUT (4) + +#define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN (4 + 16) +#define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_OUT (4) + +#define WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN (4) +#define WIRED_CMD_BUF_LEN_CLOSE_SESSION_OUT (4) + +/* Wired_Tx_LC */ +#define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN (4) +#define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_OUT (4 + 8) + +#define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN (4 + 32) +#define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_OUT (4) + +/* Wired_Tx_SKE */ +#define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN (4) +#define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_OUT (4 + 16 + 8) + +/* Wired_Tx_SKE */ +#define WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN (4 + 1) +#define WIRED_CMD_BUF_LEN_ENABLE_AUTH_OUT (4) + +/* Wired_Tx_Repeater */ +#define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN (4 + 2 + 3 + 16 + 155) +#define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_OUT (4 + 1 + 16) + +#define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN (4 + 3 + \ + 32 + 2 + 2) + +#define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_OUT (4) + +/* hdcp_command_id: Enumeration of all WIRED HDCP Command IDs */ +enum hdcp_command_id { + _WIDI_COMMAND_BASE = 0x00030000, + WIDI_INITIATE_HDCP2_SESSION = _WIDI_COMMAND_BASE, + HDCP_GET_SRM_STATUS, + HDCP_SEND_SRM_FRAGMENT, + + /* The wired HDCP Tx commands */ + _WIRED_COMMAND_BASE = 0x00031000, + WIRED_INITIATE_HDCP2_SESSION = _WIRED_COMMAND_BASE, + WIRED_VERIFY_RECEIVER_CERT, + WIRED_AKE_SEND_HPRIME, + WIRED_AKE_SEND_PAIRING_INFO, + WIRED_INIT_LOCALITY_CHECK, + WIRED_VALIDATE_LOCALITY, + WIRED_GET_SESSION_KEY, + WIRED_ENABLE_AUTH, + WIRED_VERIFY_REPEATER, + WIRED_REPEATER_AUTH_STREAM_REQ, + WIRED_CLOSE_SESSION, + + _WIRED_COMMANDS_COUNT, +}; + +union encrypted_buff { + u8 e_kpub_km[HDCP_2_2_E_KPUB_KM_LEN]; + u8 e_kh_km_m[HDCP_2_2_E_KH_KM_M_LEN]; + struct { + u8 e_kh_km[HDCP_KH_LEN]; + u8 m[HDCP_M_LEN]; + } __packed; +}; + +/* HDCP HECI message header. All header values are little endian. */ +struct hdcp_cmd_header { + u32 api_version; + u32 command_id; + enum me_hdcp_status status; + /* Length of the HECI message (excluding the header) */ + u32 buffer_len; +} __packed; + +/* Empty command request or response. No data follows the header. */ +struct hdcp_cmd_no_data { + struct hdcp_cmd_header header; +} __packed; + +/* Uniquely identifies the hdcp port being addressed for a given command. */ +struct hdcp_port_id { + u8 integrated_port_type; + /* physical_port is used until Gen11.5. Must be zero for Gen11.5+ */ + u8 physical_port; + /* attached_transcoder is for Gen11.5+. Set to zero for <Gen11.5 */ + u8 attached_transcoder; + u8 reserved; +} __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 { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 protocol; /* for HDMI vs DP */ +} __packed; + +struct wired_cmd_initiate_hdcp2_session_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 r_tx[HDCP_2_2_RTX_LEN]; + struct hdcp2_tx_caps tx_caps; +} __packed; + +/* HECI struct for ending an integrated wired HDCP Tx session. */ +struct wired_cmd_close_session_in { + struct hdcp_cmd_header header; + struct hdcp_port_id port; +} __packed; + +struct wired_cmd_close_session_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; +} __packed; + +/* HECI struct for integrated wired HDCP Tx Rx Cert verification. */ +struct wired_cmd_verify_receiver_cert_in { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + struct hdcp2_cert_rx cert_rx; + u8 r_rx[HDCP_2_2_RRX_LEN]; + u8 rx_caps[HDCP_2_2_RXCAPS_LEN]; +} __packed; + +struct wired_cmd_verify_receiver_cert_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 km_stored; + u8 reserved[3]; + union encrypted_buff ekm_buff; +} __packed; + +/* HECI struct for verification of Rx's Hprime in a HDCP Tx session */ +struct wired_cmd_ake_send_hprime_in { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 h_prime[HDCP_2_2_H_PRIME_LEN]; +} __packed; + +struct wired_cmd_ake_send_hprime_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; +} __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 { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 e_kh_km[HDCP_2_2_E_KH_KM_LEN]; +} __packed; + +struct wired_cmd_ake_send_pairing_info_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; +} __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 { + struct hdcp_cmd_header header; + struct hdcp_port_id port; +} __packed; + +struct wired_cmd_init_locality_check_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 r_n[HDCP_2_2_RN_LEN]; +} __packed; + +/* + * HECI struct for validating an Rx's LPrime value in an + * integrated wired HDCP Tx session. + */ +struct wired_cmd_validate_locality_in { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 l_prime[HDCP_2_2_L_PRIME_LEN]; +} __packed; + +struct wired_cmd_validate_locality_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; +} __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 { + struct hdcp_cmd_header header; + struct hdcp_port_id port; +} __packed; + +struct wired_cmd_get_session_key_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 e_dkey_ks[HDCP_2_2_E_DKEY_KS_LEN]; + u8 r_iv[HDCP_2_2_RIV_LEN]; +} __packed; + +/* HECI struct for the Tx enable authentication command */ +struct wired_cmd_enable_auth_in { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 stream_type; +} __packed; + +struct wired_cmd_enable_auth_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; +} __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 { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 rx_info[HDCP_2_2_RXINFO_LEN]; + u8 seq_num_v[HDCP_2_2_SEQ_NUM_LEN]; + u8 v_prime[HDCP_2_2_V_PRIME_HALF_LEN]; + u8 receiver_ids[HDCP_2_2_RECEIVER_IDS_MAX_LEN]; +} __packed; + +struct wired_cmd_verify_repeater_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 content_type_supported; + u8 v[HDCP_2_2_V_PRIME_HALF_LEN]; +} __packed; + +/* + * HECI struct in support of stream management in an + * integrated wired HDCP Tx session. + */ +struct wired_cmd_repeater_auth_stream_req_in { + struct hdcp_cmd_header header; + struct hdcp_port_id port; + u8 seq_num_m[HDCP_2_2_SEQ_NUM_LEN]; + u8 m_prime[HDCP_2_2_MPRIME_LEN]; + __be16 k; + struct hdcp2_streamid_type streams[]; +} __packed; + +struct wired_cmd_repeater_auth_stream_req_out { + struct hdcp_cmd_header header; + struct hdcp_port_id port; +} __packed; +#endif /* __MEI_HDCP_H__ */ |