cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cdns-mhdp8546-hdcp.h (2188B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Cadence MHDP8546 DP bridge driver.
      4 *
      5 * Copyright (C) 2020 Cadence Design Systems, Inc.
      6 *
      7 */
      8
      9#ifndef CDNS_MHDP8546_HDCP_H
     10#define CDNS_MHDP8546_HDCP_H
     11
     12#include "cdns-mhdp8546-core.h"
     13
     14#define HDCP_MAX_RECEIVERS 32
     15#define HDCP_RECEIVER_ID_SIZE_BYTES 5
     16#define HDCP_STATUS_SIZE         0x5
     17#define HDCP_PORT_STS_AUTH       0x1
     18#define HDCP_PORT_STS_LAST_ERR_SHIFT 0x5
     19#define HDCP_PORT_STS_LAST_ERR_MASK  (0x0F << 5)
     20#define GET_HDCP_PORT_STS_LAST_ERR(__sts__) \
     21	(((__sts__) & HDCP_PORT_STS_LAST_ERR_MASK) >> \
     22	HDCP_PORT_STS_LAST_ERR_SHIFT)
     23
     24#define HDCP_CONFIG_1_4     BIT(0) /* use HDCP 1.4 only */
     25#define HDCP_CONFIG_2_2     BIT(1) /* use HDCP 2.2 only */
     26/* use All HDCP versions */
     27#define HDCP_CONFIG_ALL     (BIT(0) | BIT(1))
     28#define HDCP_CONFIG_NONE    0
     29
     30enum {
     31	HDCP_GENERAL_SET_LC_128,
     32	HDCP_SET_SEED,
     33};
     34
     35enum {
     36	HDCP_TRAN_CONFIGURATION,
     37	HDCP2X_TX_SET_PUBLIC_KEY_PARAMS,
     38	HDCP2X_TX_SET_DEBUG_RANDOM_NUMBERS,
     39	HDCP2X_TX_RESPOND_KM,
     40	HDCP1_TX_SEND_KEYS,
     41	HDCP1_TX_SEND_RANDOM_AN,
     42	HDCP_TRAN_STATUS_CHANGE,
     43	HDCP2X_TX_IS_KM_STORED,
     44	HDCP2X_TX_STORE_KM,
     45	HDCP_TRAN_IS_REC_ID_VALID,
     46	HDCP_TRAN_RESPOND_RECEIVER_ID_VALID,
     47	HDCP_TRAN_TEST_KEYS,
     48	HDCP2X_TX_SET_KM_KEY_PARAMS,
     49	HDCP_NUM_OF_SUPPORTED_MESSAGES
     50};
     51
     52enum {
     53	HDCP_CONTENT_TYPE_0,
     54	HDCP_CONTENT_TYPE_1,
     55};
     56
     57#define DRM_HDCP_CHECK_PERIOD_MS (128 * 16)
     58
     59#define HDCP_PAIRING_R_ID 5
     60#define HDCP_PAIRING_M_LEN 16
     61#define HDCP_KM_LEN 16
     62#define HDCP_PAIRING_M_EKH 16
     63
     64struct cdns_hdcp_pairing_data {
     65	u8 receiver_id[HDCP_PAIRING_R_ID];
     66	u8 m[HDCP_PAIRING_M_LEN];
     67	u8 km[HDCP_KM_LEN];
     68	u8 ekh[HDCP_PAIRING_M_EKH];
     69};
     70
     71enum {
     72	HDCP_TX_2,
     73	HDCP_TX_1,
     74	HDCP_TX_BOTH,
     75};
     76
     77#define DLP_MODULUS_N 384
     78#define DLP_E 3
     79
     80struct cdns_hdcp_tx_public_key_param {
     81	u8 N[DLP_MODULUS_N];
     82	u8 E[DLP_E];
     83};
     84
     85int cdns_mhdp_hdcp_set_public_key_param(struct cdns_mhdp_device *mhdp,
     86					struct cdns_hdcp_tx_public_key_param *val);
     87int cdns_mhdp_hdcp_set_lc(struct cdns_mhdp_device *mhdp, u8 *val);
     88int cdns_mhdp_hdcp_enable(struct cdns_mhdp_device *mhdp, u8 content_type);
     89int cdns_mhdp_hdcp_disable(struct cdns_mhdp_device *mhdp);
     90void cdns_mhdp_hdcp_init(struct cdns_mhdp_device *mhdp);
     91
     92#endif