1*6a99099fSThomas Zimmermann /* SPDX-License-Identifier: MIT */ 2*6a99099fSThomas Zimmermann /* 3*6a99099fSThomas Zimmermann * Copyright (C) 2017 Google, Inc. 4*6a99099fSThomas Zimmermann * 5*6a99099fSThomas Zimmermann * Authors: 6*6a99099fSThomas Zimmermann * Sean Paul <seanpaul@chromium.org> 7*6a99099fSThomas Zimmermann */ 8*6a99099fSThomas Zimmermann 9*6a99099fSThomas Zimmermann #ifndef _DRM_HDCP_H_ 10*6a99099fSThomas Zimmermann #define _DRM_HDCP_H_ 11*6a99099fSThomas Zimmermann 12*6a99099fSThomas Zimmermann #include <linux/types.h> 13*6a99099fSThomas Zimmermann 14*6a99099fSThomas Zimmermann /* Period of hdcp checks (to ensure we're still authenticated) */ 15*6a99099fSThomas Zimmermann #define DRM_HDCP_CHECK_PERIOD_MS (128 * 16) 16*6a99099fSThomas Zimmermann #define DRM_HDCP2_CHECK_PERIOD_MS 500 17*6a99099fSThomas Zimmermann 18*6a99099fSThomas Zimmermann /* Shared lengths/masks between HDMI/DVI/DisplayPort */ 19*6a99099fSThomas Zimmermann #define DRM_HDCP_AN_LEN 8 20*6a99099fSThomas Zimmermann #define DRM_HDCP_BSTATUS_LEN 2 21*6a99099fSThomas Zimmermann #define DRM_HDCP_KSV_LEN 5 22*6a99099fSThomas Zimmermann #define DRM_HDCP_RI_LEN 2 23*6a99099fSThomas Zimmermann #define DRM_HDCP_V_PRIME_PART_LEN 4 24*6a99099fSThomas Zimmermann #define DRM_HDCP_V_PRIME_NUM_PARTS 5 25*6a99099fSThomas Zimmermann #define DRM_HDCP_NUM_DOWNSTREAM(x) (x & 0x7f) 26*6a99099fSThomas Zimmermann #define DRM_HDCP_MAX_CASCADE_EXCEEDED(x) (x & BIT(3)) 27*6a99099fSThomas Zimmermann #define DRM_HDCP_MAX_DEVICE_EXCEEDED(x) (x & BIT(7)) 28*6a99099fSThomas Zimmermann 29*6a99099fSThomas Zimmermann /* Slave address for the HDCP registers in the receiver */ 30*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_ADDR 0x3A 31*6a99099fSThomas Zimmermann 32*6a99099fSThomas Zimmermann /* Value to use at the end of the SHA-1 bytestream used for repeaters */ 33*6a99099fSThomas Zimmermann #define DRM_HDCP_SHA1_TERMINATOR 0x80 34*6a99099fSThomas Zimmermann 35*6a99099fSThomas Zimmermann /* HDCP register offsets for HDMI/DVI devices */ 36*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_BKSV 0x00 37*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_RI_PRIME 0x08 38*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_AKSV 0x10 39*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_AN 0x18 40*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_V_PRIME(h) (0x20 + h * 4) 41*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_BCAPS 0x40 42*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_BCAPS_REPEATER_PRESENT BIT(6) 43*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY BIT(5) 44*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_BSTATUS 0x41 45*6a99099fSThomas Zimmermann #define DRM_HDCP_DDC_KSV_FIFO 0x43 46*6a99099fSThomas Zimmermann 47*6a99099fSThomas Zimmermann #define DRM_HDCP_1_4_SRM_ID 0x8 48*6a99099fSThomas Zimmermann #define DRM_HDCP_1_4_VRL_LENGTH_SIZE 3 49*6a99099fSThomas Zimmermann #define DRM_HDCP_1_4_DCP_SIG_SIZE 40 50*6a99099fSThomas Zimmermann 51*6a99099fSThomas Zimmermann /* Protocol message definition for HDCP2.2 specification */ 52*6a99099fSThomas Zimmermann /* 53*6a99099fSThomas Zimmermann * Protected content streams are classified into 2 types: 54*6a99099fSThomas Zimmermann * - Type0: Can be transmitted with HDCP 1.4+ 55*6a99099fSThomas Zimmermann * - Type1: Can be transmitted with HDCP 2.2+ 56*6a99099fSThomas Zimmermann */ 57*6a99099fSThomas Zimmermann #define HDCP_STREAM_TYPE0 0x00 58*6a99099fSThomas Zimmermann #define HDCP_STREAM_TYPE1 0x01 59*6a99099fSThomas Zimmermann 60*6a99099fSThomas Zimmermann /* HDCP2.2 Msg IDs */ 61*6a99099fSThomas Zimmermann #define HDCP_2_2_NULL_MSG 1 62*6a99099fSThomas Zimmermann #define HDCP_2_2_AKE_INIT 2 63*6a99099fSThomas Zimmermann #define HDCP_2_2_AKE_SEND_CERT 3 64*6a99099fSThomas Zimmermann #define HDCP_2_2_AKE_NO_STORED_KM 4 65*6a99099fSThomas Zimmermann #define HDCP_2_2_AKE_STORED_KM 5 66*6a99099fSThomas Zimmermann #define HDCP_2_2_AKE_SEND_HPRIME 7 67*6a99099fSThomas Zimmermann #define HDCP_2_2_AKE_SEND_PAIRING_INFO 8 68*6a99099fSThomas Zimmermann #define HDCP_2_2_LC_INIT 9 69*6a99099fSThomas Zimmermann #define HDCP_2_2_LC_SEND_LPRIME 10 70*6a99099fSThomas Zimmermann #define HDCP_2_2_SKE_SEND_EKS 11 71*6a99099fSThomas Zimmermann #define HDCP_2_2_REP_SEND_RECVID_LIST 12 72*6a99099fSThomas Zimmermann #define HDCP_2_2_REP_SEND_ACK 15 73*6a99099fSThomas Zimmermann #define HDCP_2_2_REP_STREAM_MANAGE 16 74*6a99099fSThomas Zimmermann #define HDCP_2_2_REP_STREAM_READY 17 75*6a99099fSThomas Zimmermann 76*6a99099fSThomas Zimmermann #define HDCP_2_2_RTX_LEN 8 77*6a99099fSThomas Zimmermann #define HDCP_2_2_RRX_LEN 8 78*6a99099fSThomas Zimmermann 79*6a99099fSThomas Zimmermann #define HDCP_2_2_K_PUB_RX_MOD_N_LEN 128 80*6a99099fSThomas Zimmermann #define HDCP_2_2_K_PUB_RX_EXP_E_LEN 3 81*6a99099fSThomas Zimmermann #define HDCP_2_2_K_PUB_RX_LEN (HDCP_2_2_K_PUB_RX_MOD_N_LEN + \ 82*6a99099fSThomas Zimmermann HDCP_2_2_K_PUB_RX_EXP_E_LEN) 83*6a99099fSThomas Zimmermann 84*6a99099fSThomas Zimmermann #define HDCP_2_2_DCP_LLC_SIG_LEN 384 85*6a99099fSThomas Zimmermann 86*6a99099fSThomas Zimmermann #define HDCP_2_2_E_KPUB_KM_LEN 128 87*6a99099fSThomas Zimmermann #define HDCP_2_2_E_KH_KM_M_LEN (16 + 16) 88*6a99099fSThomas Zimmermann #define HDCP_2_2_H_PRIME_LEN 32 89*6a99099fSThomas Zimmermann #define HDCP_2_2_E_KH_KM_LEN 16 90*6a99099fSThomas Zimmermann #define HDCP_2_2_RN_LEN 8 91*6a99099fSThomas Zimmermann #define HDCP_2_2_L_PRIME_LEN 32 92*6a99099fSThomas Zimmermann #define HDCP_2_2_E_DKEY_KS_LEN 16 93*6a99099fSThomas Zimmermann #define HDCP_2_2_RIV_LEN 8 94*6a99099fSThomas Zimmermann #define HDCP_2_2_SEQ_NUM_LEN 3 95*6a99099fSThomas Zimmermann #define HDCP_2_2_V_PRIME_HALF_LEN (HDCP_2_2_L_PRIME_LEN / 2) 96*6a99099fSThomas Zimmermann #define HDCP_2_2_RECEIVER_ID_LEN DRM_HDCP_KSV_LEN 97*6a99099fSThomas Zimmermann #define HDCP_2_2_MAX_DEVICE_COUNT 31 98*6a99099fSThomas Zimmermann #define HDCP_2_2_RECEIVER_IDS_MAX_LEN (HDCP_2_2_RECEIVER_ID_LEN * \ 99*6a99099fSThomas Zimmermann HDCP_2_2_MAX_DEVICE_COUNT) 100*6a99099fSThomas Zimmermann #define HDCP_2_2_MPRIME_LEN 32 101*6a99099fSThomas Zimmermann 102*6a99099fSThomas Zimmermann /* Following Macros take a byte at a time for bit(s) masking */ 103*6a99099fSThomas Zimmermann /* 104*6a99099fSThomas Zimmermann * TODO: HDCP_2_2_MAX_CONTENT_STREAMS_CNT is based upon actual 105*6a99099fSThomas Zimmermann * H/W MST streams capacity. 106*6a99099fSThomas Zimmermann * This required to be moved out to platform specific header. 107*6a99099fSThomas Zimmermann */ 108*6a99099fSThomas Zimmermann #define HDCP_2_2_MAX_CONTENT_STREAMS_CNT 4 109*6a99099fSThomas Zimmermann #define HDCP_2_2_TXCAP_MASK_LEN 2 110*6a99099fSThomas Zimmermann #define HDCP_2_2_RXCAPS_LEN 3 111*6a99099fSThomas Zimmermann #define HDCP_2_2_RX_REPEATER(x) ((x) & BIT(0)) 112*6a99099fSThomas Zimmermann #define HDCP_2_2_DP_HDCP_CAPABLE(x) ((x) & BIT(1)) 113*6a99099fSThomas Zimmermann #define HDCP_2_2_RXINFO_LEN 2 114*6a99099fSThomas Zimmermann 115*6a99099fSThomas Zimmermann /* HDCP1.x compliant device in downstream */ 116*6a99099fSThomas Zimmermann #define HDCP_2_2_HDCP1_DEVICE_CONNECTED(x) ((x) & BIT(0)) 117*6a99099fSThomas Zimmermann 118*6a99099fSThomas Zimmermann /* HDCP2.0 Compliant repeater in downstream */ 119*6a99099fSThomas Zimmermann #define HDCP_2_2_HDCP_2_0_REP_CONNECTED(x) ((x) & BIT(1)) 120*6a99099fSThomas Zimmermann #define HDCP_2_2_MAX_CASCADE_EXCEEDED(x) ((x) & BIT(2)) 121*6a99099fSThomas Zimmermann #define HDCP_2_2_MAX_DEVS_EXCEEDED(x) ((x) & BIT(3)) 122*6a99099fSThomas Zimmermann #define HDCP_2_2_DEV_COUNT_LO(x) (((x) & (0xF << 4)) >> 4) 123*6a99099fSThomas Zimmermann #define HDCP_2_2_DEV_COUNT_HI(x) ((x) & BIT(0)) 124*6a99099fSThomas Zimmermann #define HDCP_2_2_DEPTH(x) (((x) & (0x7 << 1)) >> 1) 125*6a99099fSThomas Zimmermann 126*6a99099fSThomas Zimmermann struct hdcp2_cert_rx { 127*6a99099fSThomas Zimmermann u8 receiver_id[HDCP_2_2_RECEIVER_ID_LEN]; 128*6a99099fSThomas Zimmermann u8 kpub_rx[HDCP_2_2_K_PUB_RX_LEN]; 129*6a99099fSThomas Zimmermann u8 reserved[2]; 130*6a99099fSThomas Zimmermann u8 dcp_signature[HDCP_2_2_DCP_LLC_SIG_LEN]; 131*6a99099fSThomas Zimmermann } __packed; 132*6a99099fSThomas Zimmermann 133*6a99099fSThomas Zimmermann struct hdcp2_streamid_type { 134*6a99099fSThomas Zimmermann u8 stream_id; 135*6a99099fSThomas Zimmermann u8 stream_type; 136*6a99099fSThomas Zimmermann } __packed; 137*6a99099fSThomas Zimmermann 138*6a99099fSThomas Zimmermann /* 139*6a99099fSThomas Zimmermann * The TxCaps field specified in the HDCP HDMI, DP specs 140*6a99099fSThomas Zimmermann * This field is big endian as specified in the errata. 141*6a99099fSThomas Zimmermann */ 142*6a99099fSThomas Zimmermann struct hdcp2_tx_caps { 143*6a99099fSThomas Zimmermann /* Transmitter must set this to 0x2 */ 144*6a99099fSThomas Zimmermann u8 version; 145*6a99099fSThomas Zimmermann 146*6a99099fSThomas Zimmermann /* Reserved for HDCP and DP Spec. Read as Zero */ 147*6a99099fSThomas Zimmermann u8 tx_cap_mask[HDCP_2_2_TXCAP_MASK_LEN]; 148*6a99099fSThomas Zimmermann } __packed; 149*6a99099fSThomas Zimmermann 150*6a99099fSThomas Zimmermann /* Main structures for HDCP2.2 protocol communication */ 151*6a99099fSThomas Zimmermann struct hdcp2_ake_init { 152*6a99099fSThomas Zimmermann u8 msg_id; 153*6a99099fSThomas Zimmermann u8 r_tx[HDCP_2_2_RTX_LEN]; 154*6a99099fSThomas Zimmermann struct hdcp2_tx_caps tx_caps; 155*6a99099fSThomas Zimmermann } __packed; 156*6a99099fSThomas Zimmermann 157*6a99099fSThomas Zimmermann struct hdcp2_ake_send_cert { 158*6a99099fSThomas Zimmermann u8 msg_id; 159*6a99099fSThomas Zimmermann struct hdcp2_cert_rx cert_rx; 160*6a99099fSThomas Zimmermann u8 r_rx[HDCP_2_2_RRX_LEN]; 161*6a99099fSThomas Zimmermann u8 rx_caps[HDCP_2_2_RXCAPS_LEN]; 162*6a99099fSThomas Zimmermann } __packed; 163*6a99099fSThomas Zimmermann 164*6a99099fSThomas Zimmermann struct hdcp2_ake_no_stored_km { 165*6a99099fSThomas Zimmermann u8 msg_id; 166*6a99099fSThomas Zimmermann u8 e_kpub_km[HDCP_2_2_E_KPUB_KM_LEN]; 167*6a99099fSThomas Zimmermann } __packed; 168*6a99099fSThomas Zimmermann 169*6a99099fSThomas Zimmermann struct hdcp2_ake_stored_km { 170*6a99099fSThomas Zimmermann u8 msg_id; 171*6a99099fSThomas Zimmermann u8 e_kh_km_m[HDCP_2_2_E_KH_KM_M_LEN]; 172*6a99099fSThomas Zimmermann } __packed; 173*6a99099fSThomas Zimmermann 174*6a99099fSThomas Zimmermann struct hdcp2_ake_send_hprime { 175*6a99099fSThomas Zimmermann u8 msg_id; 176*6a99099fSThomas Zimmermann u8 h_prime[HDCP_2_2_H_PRIME_LEN]; 177*6a99099fSThomas Zimmermann } __packed; 178*6a99099fSThomas Zimmermann 179*6a99099fSThomas Zimmermann struct hdcp2_ake_send_pairing_info { 180*6a99099fSThomas Zimmermann u8 msg_id; 181*6a99099fSThomas Zimmermann u8 e_kh_km[HDCP_2_2_E_KH_KM_LEN]; 182*6a99099fSThomas Zimmermann } __packed; 183*6a99099fSThomas Zimmermann 184*6a99099fSThomas Zimmermann struct hdcp2_lc_init { 185*6a99099fSThomas Zimmermann u8 msg_id; 186*6a99099fSThomas Zimmermann u8 r_n[HDCP_2_2_RN_LEN]; 187*6a99099fSThomas Zimmermann } __packed; 188*6a99099fSThomas Zimmermann 189*6a99099fSThomas Zimmermann struct hdcp2_lc_send_lprime { 190*6a99099fSThomas Zimmermann u8 msg_id; 191*6a99099fSThomas Zimmermann u8 l_prime[HDCP_2_2_L_PRIME_LEN]; 192*6a99099fSThomas Zimmermann } __packed; 193*6a99099fSThomas Zimmermann 194*6a99099fSThomas Zimmermann struct hdcp2_ske_send_eks { 195*6a99099fSThomas Zimmermann u8 msg_id; 196*6a99099fSThomas Zimmermann u8 e_dkey_ks[HDCP_2_2_E_DKEY_KS_LEN]; 197*6a99099fSThomas Zimmermann u8 riv[HDCP_2_2_RIV_LEN]; 198*6a99099fSThomas Zimmermann } __packed; 199*6a99099fSThomas Zimmermann 200*6a99099fSThomas Zimmermann struct hdcp2_rep_send_receiverid_list { 201*6a99099fSThomas Zimmermann u8 msg_id; 202*6a99099fSThomas Zimmermann u8 rx_info[HDCP_2_2_RXINFO_LEN]; 203*6a99099fSThomas Zimmermann u8 seq_num_v[HDCP_2_2_SEQ_NUM_LEN]; 204*6a99099fSThomas Zimmermann u8 v_prime[HDCP_2_2_V_PRIME_HALF_LEN]; 205*6a99099fSThomas Zimmermann u8 receiver_ids[HDCP_2_2_RECEIVER_IDS_MAX_LEN]; 206*6a99099fSThomas Zimmermann } __packed; 207*6a99099fSThomas Zimmermann 208*6a99099fSThomas Zimmermann struct hdcp2_rep_send_ack { 209*6a99099fSThomas Zimmermann u8 msg_id; 210*6a99099fSThomas Zimmermann u8 v[HDCP_2_2_V_PRIME_HALF_LEN]; 211*6a99099fSThomas Zimmermann } __packed; 212*6a99099fSThomas Zimmermann 213*6a99099fSThomas Zimmermann struct hdcp2_rep_stream_manage { 214*6a99099fSThomas Zimmermann u8 msg_id; 215*6a99099fSThomas Zimmermann u8 seq_num_m[HDCP_2_2_SEQ_NUM_LEN]; 216*6a99099fSThomas Zimmermann __be16 k; 217*6a99099fSThomas Zimmermann struct hdcp2_streamid_type streams[HDCP_2_2_MAX_CONTENT_STREAMS_CNT]; 218*6a99099fSThomas Zimmermann } __packed; 219*6a99099fSThomas Zimmermann 220*6a99099fSThomas Zimmermann struct hdcp2_rep_stream_ready { 221*6a99099fSThomas Zimmermann u8 msg_id; 222*6a99099fSThomas Zimmermann u8 m_prime[HDCP_2_2_MPRIME_LEN]; 223*6a99099fSThomas Zimmermann } __packed; 224*6a99099fSThomas Zimmermann 225*6a99099fSThomas Zimmermann /* HDCP2.2 TIMEOUTs in mSec */ 226*6a99099fSThomas Zimmermann #define HDCP_2_2_CERT_TIMEOUT_MS 100 227*6a99099fSThomas Zimmermann #define HDCP_2_2_DP_CERT_READ_TIMEOUT_MS 110 228*6a99099fSThomas Zimmermann #define HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS 1000 229*6a99099fSThomas Zimmermann #define HDCP_2_2_HPRIME_PAIRED_TIMEOUT_MS 200 230*6a99099fSThomas Zimmermann #define HDCP_2_2_DP_HPRIME_READ_TIMEOUT_MS 7 231*6a99099fSThomas Zimmermann #define HDCP_2_2_PAIRING_TIMEOUT_MS 200 232*6a99099fSThomas Zimmermann #define HDCP_2_2_DP_PAIRING_READ_TIMEOUT_MS 5 233*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_LPRIME_TIMEOUT_MS 20 234*6a99099fSThomas Zimmermann #define HDCP_2_2_DP_LPRIME_TIMEOUT_MS 16 235*6a99099fSThomas Zimmermann #define HDCP_2_2_RECVID_LIST_TIMEOUT_MS 3000 236*6a99099fSThomas Zimmermann #define HDCP_2_2_STREAM_READY_TIMEOUT_MS 100 237*6a99099fSThomas Zimmermann 238*6a99099fSThomas Zimmermann /* HDMI HDCP2.2 Register Offsets */ 239*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_REG_VER_OFFSET 0x50 240*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_REG_WR_MSG_OFFSET 0x60 241*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_REG_RXSTATUS_OFFSET 0x70 242*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_REG_RD_MSG_OFFSET 0x80 243*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_REG_DBG_OFFSET 0xC0 244*6a99099fSThomas Zimmermann 245*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_SUPPORT_MASK BIT(2) 246*6a99099fSThomas Zimmermann #define HDCP_2_2_RX_CAPS_VERSION_VAL 0x02 247*6a99099fSThomas Zimmermann #define HDCP_2_2_SEQ_NUM_MAX 0xFFFFFF 248*6a99099fSThomas Zimmermann #define HDCP_2_2_DELAY_BEFORE_ENCRYPTION_EN 200 249*6a99099fSThomas Zimmermann 250*6a99099fSThomas Zimmermann /* Below macros take a byte at a time and mask the bit(s) */ 251*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_RXSTATUS_LEN 2 252*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(x) ((x) & 0x3) 253*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_RXSTATUS_READY(x) ((x) & BIT(2)) 254*6a99099fSThomas Zimmermann #define HDCP_2_2_HDMI_RXSTATUS_REAUTH_REQ(x) ((x) & BIT(3)) 255*6a99099fSThomas Zimmermann 256*6a99099fSThomas Zimmermann /* 257*6a99099fSThomas Zimmermann * Helper functions to convert 24bit big endian hdcp sequence number to 258*6a99099fSThomas Zimmermann * host format and back 259*6a99099fSThomas Zimmermann */ 260*6a99099fSThomas Zimmermann static inline drm_hdcp_be24_to_cpu(const u8 seq_num[HDCP_2_2_SEQ_NUM_LEN])261*6a99099fSThomas Zimmermannu32 drm_hdcp_be24_to_cpu(const u8 seq_num[HDCP_2_2_SEQ_NUM_LEN]) 262*6a99099fSThomas Zimmermann { 263*6a99099fSThomas Zimmermann return (u32)(seq_num[2] | seq_num[1] << 8 | seq_num[0] << 16); 264*6a99099fSThomas Zimmermann } 265*6a99099fSThomas Zimmermann 266*6a99099fSThomas Zimmermann static inline drm_hdcp_cpu_to_be24(u8 seq_num[HDCP_2_2_SEQ_NUM_LEN],u32 val)267*6a99099fSThomas Zimmermannvoid drm_hdcp_cpu_to_be24(u8 seq_num[HDCP_2_2_SEQ_NUM_LEN], u32 val) 268*6a99099fSThomas Zimmermann { 269*6a99099fSThomas Zimmermann seq_num[0] = val >> 16; 270*6a99099fSThomas Zimmermann seq_num[1] = val >> 8; 271*6a99099fSThomas Zimmermann seq_num[2] = val; 272*6a99099fSThomas Zimmermann } 273*6a99099fSThomas Zimmermann 274*6a99099fSThomas Zimmermann #define DRM_HDCP_SRM_GEN1_MAX_BYTES (5 * 1024) 275*6a99099fSThomas Zimmermann #define DRM_HDCP_1_4_SRM_ID 0x8 276*6a99099fSThomas Zimmermann #define DRM_HDCP_SRM_ID_MASK (0xF << 4) 277*6a99099fSThomas Zimmermann #define DRM_HDCP_1_4_VRL_LENGTH_SIZE 3 278*6a99099fSThomas Zimmermann #define DRM_HDCP_1_4_DCP_SIG_SIZE 40 279*6a99099fSThomas Zimmermann #define DRM_HDCP_2_SRM_ID 0x9 280*6a99099fSThomas Zimmermann #define DRM_HDCP_2_INDICATOR 0x1 281*6a99099fSThomas Zimmermann #define DRM_HDCP_2_INDICATOR_MASK 0xF 282*6a99099fSThomas Zimmermann #define DRM_HDCP_2_VRL_LENGTH_SIZE 3 283*6a99099fSThomas Zimmermann #define DRM_HDCP_2_DCP_SIG_SIZE 384 284*6a99099fSThomas Zimmermann #define DRM_HDCP_2_NO_OF_DEV_PLUS_RESERVED_SZ 4 285*6a99099fSThomas Zimmermann #define DRM_HDCP_2_KSV_COUNT_2_LSBITS(byte) (((byte) & 0xC0) >> 6) 286*6a99099fSThomas Zimmermann 287*6a99099fSThomas Zimmermann struct hdcp_srm_header { 288*6a99099fSThomas Zimmermann u8 srm_id; 289*6a99099fSThomas Zimmermann u8 reserved; 290*6a99099fSThomas Zimmermann __be16 srm_version; 291*6a99099fSThomas Zimmermann u8 srm_gen_no; 292*6a99099fSThomas Zimmermann } __packed; 293*6a99099fSThomas Zimmermann 294*6a99099fSThomas Zimmermann /* Content Type classification for HDCP2.2 vs others */ 295*6a99099fSThomas Zimmermann #define DRM_MODE_HDCP_CONTENT_TYPE0 0 296*6a99099fSThomas Zimmermann #define DRM_MODE_HDCP_CONTENT_TYPE1 1 297*6a99099fSThomas Zimmermann 298*6a99099fSThomas Zimmermann #endif 299