1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright © 2019 Intel Corporation 4 * 5 * Authors: 6 * Ramalingam C <ramalingam.c@intel.com> 7 */ 8 9 #ifndef __MEI_HDCP_H__ 10 #define __MEI_HDCP_H__ 11 12 #include <drm/display/drm_hdcp.h> 13 14 /* me_hdcp_status: Enumeration of all HDCP Status Codes */ 15 enum me_hdcp_status { 16 ME_HDCP_STATUS_SUCCESS = 0x0000, 17 18 /* WiDi Generic Status Codes */ 19 ME_HDCP_STATUS_INTERNAL_ERROR = 0x1000, 20 ME_HDCP_STATUS_UNKNOWN_ERROR = 0x1001, 21 ME_HDCP_STATUS_INCORRECT_API_VERSION = 0x1002, 22 ME_HDCP_STATUS_INVALID_FUNCTION = 0x1003, 23 ME_HDCP_STATUS_INVALID_BUFFER_LENGTH = 0x1004, 24 ME_HDCP_STATUS_INVALID_PARAMS = 0x1005, 25 ME_HDCP_STATUS_AUTHENTICATION_FAILED = 0x1006, 26 27 /* WiDi Status Codes */ 28 ME_HDCP_INVALID_SESSION_STATE = 0x6000, 29 ME_HDCP_SRM_FRAGMENT_UNEXPECTED = 0x6001, 30 ME_HDCP_SRM_INVALID_LENGTH = 0x6002, 31 ME_HDCP_SRM_FRAGMENT_OFFSET_INVALID = 0x6003, 32 ME_HDCP_SRM_VERIFICATION_FAILED = 0x6004, 33 ME_HDCP_SRM_VERSION_TOO_OLD = 0x6005, 34 ME_HDCP_RX_CERT_VERIFICATION_FAILED = 0x6006, 35 ME_HDCP_RX_REVOKED = 0x6007, 36 ME_HDCP_H_VERIFICATION_FAILED = 0x6008, 37 ME_HDCP_REPEATER_CHECK_UNEXPECTED = 0x6009, 38 ME_HDCP_TOPOLOGY_MAX_EXCEEDED = 0x600A, 39 ME_HDCP_V_VERIFICATION_FAILED = 0x600B, 40 ME_HDCP_L_VERIFICATION_FAILED = 0x600C, 41 ME_HDCP_STREAM_KEY_ALLOC_FAILED = 0x600D, 42 ME_HDCP_BASE_KEY_RESET_FAILED = 0x600E, 43 ME_HDCP_NONCE_GENERATION_FAILED = 0x600F, 44 ME_HDCP_STATUS_INVALID_E_KEY_STATE = 0x6010, 45 ME_HDCP_STATUS_INVALID_CS_ICV = 0x6011, 46 ME_HDCP_STATUS_INVALID_KB_KEY_STATE = 0x6012, 47 ME_HDCP_STATUS_INVALID_PAVP_MODE_ICV = 0x6013, 48 ME_HDCP_STATUS_INVALID_PAVP_MODE = 0x6014, 49 ME_HDCP_STATUS_LC_MAX_ATTEMPTS = 0x6015, 50 51 /* New status for HDCP 2.1 */ 52 ME_HDCP_STATUS_MISMATCH_IN_M = 0x6016, 53 54 /* New status code for HDCP 2.2 Rx */ 55 ME_HDCP_STATUS_RX_PROV_NOT_ALLOWED = 0x6017, 56 ME_HDCP_STATUS_RX_PROV_WRONG_SUBJECT = 0x6018, 57 ME_HDCP_RX_NEEDS_PROVISIONING = 0x6019, 58 ME_HDCP_BKSV_ICV_AUTH_FAILED = 0x6020, 59 ME_HDCP_STATUS_INVALID_STREAM_ID = 0x6021, 60 ME_HDCP_STATUS_CHAIN_NOT_INITIALIZED = 0x6022, 61 ME_HDCP_FAIL_NOT_EXPECTED = 0x6023, 62 ME_HDCP_FAIL_HDCP_OFF = 0x6024, 63 ME_HDCP_FAIL_INVALID_PAVP_MEMORY_MODE = 0x6025, 64 ME_HDCP_FAIL_AES_ECB_FAILURE = 0x6026, 65 ME_HDCP_FEATURE_NOT_SUPPORTED = 0x6027, 66 ME_HDCP_DMA_READ_ERROR = 0x6028, 67 ME_HDCP_DMA_WRITE_ERROR = 0x6029, 68 ME_HDCP_FAIL_INVALID_PACKET_SIZE = 0x6030, 69 ME_HDCP_H264_PARSING_ERROR = 0x6031, 70 ME_HDCP_HDCP2_ERRATA_VIDEO_VIOLATION = 0x6032, 71 ME_HDCP_HDCP2_ERRATA_AUDIO_VIOLATION = 0x6033, 72 ME_HDCP_TX_ACTIVE_ERROR = 0x6034, 73 ME_HDCP_MODE_CHANGE_ERROR = 0x6035, 74 ME_HDCP_STREAM_TYPE_ERROR = 0x6036, 75 ME_HDCP_STREAM_MANAGE_NOT_POSSIBLE = 0x6037, 76 77 ME_HDCP_STATUS_PORT_INVALID_COMMAND = 0x6038, 78 ME_HDCP_STATUS_UNSUPPORTED_PROTOCOL = 0x6039, 79 ME_HDCP_STATUS_INVALID_PORT_INDEX = 0x603a, 80 ME_HDCP_STATUS_TX_AUTH_NEEDED = 0x603b, 81 ME_HDCP_STATUS_NOT_INTEGRATED_PORT = 0x603c, 82 ME_HDCP_STATUS_SESSION_MAX_REACHED = 0x603d, 83 84 /* hdcp capable bit is not set in rx_caps(error is unique to DP) */ 85 ME_HDCP_STATUS_NOT_HDCP_CAPABLE = 0x6041, 86 87 ME_HDCP_STATUS_INVALID_STREAM_COUNT = 0x6042, 88 }; 89 90 #define HDCP_API_VERSION 0x00010000 91 92 #define HDCP_M_LEN 16 93 #define HDCP_KH_LEN 16 94 95 /* Payload Buffer size(Excluding Header) for CMDs and corresponding response */ 96 /* Wired_Tx_AKE */ 97 #define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN (4 + 1) 98 #define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_OUT (4 + 8 + 3) 99 100 #define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN (4 + 522 + 8 + 3) 101 #define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MIN_OUT (4 + 1 + 3 + 16 + 16) 102 #define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MAX_OUT (4 + 1 + 3 + 128) 103 104 #define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN (4 + 32) 105 #define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_OUT (4) 106 107 #define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN (4 + 16) 108 #define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_OUT (4) 109 110 #define WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN (4) 111 #define WIRED_CMD_BUF_LEN_CLOSE_SESSION_OUT (4) 112 113 /* Wired_Tx_LC */ 114 #define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN (4) 115 #define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_OUT (4 + 8) 116 117 #define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN (4 + 32) 118 #define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_OUT (4) 119 120 /* Wired_Tx_SKE */ 121 #define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN (4) 122 #define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_OUT (4 + 16 + 8) 123 124 /* Wired_Tx_SKE */ 125 #define WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN (4 + 1) 126 #define WIRED_CMD_BUF_LEN_ENABLE_AUTH_OUT (4) 127 128 /* Wired_Tx_Repeater */ 129 #define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN (4 + 2 + 3 + 16 + 155) 130 #define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_OUT (4 + 1 + 16) 131 132 #define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN (4 + 3 + \ 133 32 + 2 + 2) 134 135 #define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_OUT (4) 136 137 /* hdcp_command_id: Enumeration of all WIRED HDCP Command IDs */ 138 enum hdcp_command_id { 139 _WIDI_COMMAND_BASE = 0x00030000, 140 WIDI_INITIATE_HDCP2_SESSION = _WIDI_COMMAND_BASE, 141 HDCP_GET_SRM_STATUS, 142 HDCP_SEND_SRM_FRAGMENT, 143 144 /* The wired HDCP Tx commands */ 145 _WIRED_COMMAND_BASE = 0x00031000, 146 WIRED_INITIATE_HDCP2_SESSION = _WIRED_COMMAND_BASE, 147 WIRED_VERIFY_RECEIVER_CERT, 148 WIRED_AKE_SEND_HPRIME, 149 WIRED_AKE_SEND_PAIRING_INFO, 150 WIRED_INIT_LOCALITY_CHECK, 151 WIRED_VALIDATE_LOCALITY, 152 WIRED_GET_SESSION_KEY, 153 WIRED_ENABLE_AUTH, 154 WIRED_VERIFY_REPEATER, 155 WIRED_REPEATER_AUTH_STREAM_REQ, 156 WIRED_CLOSE_SESSION, 157 158 _WIRED_COMMANDS_COUNT, 159 }; 160 161 union encrypted_buff { 162 u8 e_kpub_km[HDCP_2_2_E_KPUB_KM_LEN]; 163 u8 e_kh_km_m[HDCP_2_2_E_KH_KM_M_LEN]; 164 struct { 165 u8 e_kh_km[HDCP_KH_LEN]; 166 u8 m[HDCP_M_LEN]; 167 } __packed; 168 }; 169 170 /* HDCP HECI message header. All header values are little endian. */ 171 struct hdcp_cmd_header { 172 u32 api_version; 173 u32 command_id; 174 enum me_hdcp_status status; 175 /* Length of the HECI message (excluding the header) */ 176 u32 buffer_len; 177 } __packed; 178 179 /* Empty command request or response. No data follows the header. */ 180 struct hdcp_cmd_no_data { 181 struct hdcp_cmd_header header; 182 } __packed; 183 184 /* Uniquely identifies the hdcp port being addressed for a given command. */ 185 struct hdcp_port_id { 186 u8 integrated_port_type; 187 /* physical_port is used until Gen11.5. Must be zero for Gen11.5+ */ 188 u8 physical_port; 189 /* attached_transcoder is for Gen11.5+. Set to zero for <Gen11.5 */ 190 u8 attached_transcoder; 191 u8 reserved; 192 } __packed; 193 194 /* 195 * Data structures for integrated wired HDCP2 Tx in 196 * support of the AKE protocol 197 */ 198 /* HECI struct for integrated wired HDCP Tx session initiation. */ 199 struct wired_cmd_initiate_hdcp2_session_in { 200 struct hdcp_cmd_header header; 201 struct hdcp_port_id port; 202 u8 protocol; /* for HDMI vs DP */ 203 } __packed; 204 205 struct wired_cmd_initiate_hdcp2_session_out { 206 struct hdcp_cmd_header header; 207 struct hdcp_port_id port; 208 u8 r_tx[HDCP_2_2_RTX_LEN]; 209 struct hdcp2_tx_caps tx_caps; 210 } __packed; 211 212 /* HECI struct for ending an integrated wired HDCP Tx session. */ 213 struct wired_cmd_close_session_in { 214 struct hdcp_cmd_header header; 215 struct hdcp_port_id port; 216 } __packed; 217 218 struct wired_cmd_close_session_out { 219 struct hdcp_cmd_header header; 220 struct hdcp_port_id port; 221 } __packed; 222 223 /* HECI struct for integrated wired HDCP Tx Rx Cert verification. */ 224 struct wired_cmd_verify_receiver_cert_in { 225 struct hdcp_cmd_header header; 226 struct hdcp_port_id port; 227 struct hdcp2_cert_rx cert_rx; 228 u8 r_rx[HDCP_2_2_RRX_LEN]; 229 u8 rx_caps[HDCP_2_2_RXCAPS_LEN]; 230 } __packed; 231 232 struct wired_cmd_verify_receiver_cert_out { 233 struct hdcp_cmd_header header; 234 struct hdcp_port_id port; 235 u8 km_stored; 236 u8 reserved[3]; 237 union encrypted_buff ekm_buff; 238 } __packed; 239 240 /* HECI struct for verification of Rx's Hprime in a HDCP Tx session */ 241 struct wired_cmd_ake_send_hprime_in { 242 struct hdcp_cmd_header header; 243 struct hdcp_port_id port; 244 u8 h_prime[HDCP_2_2_H_PRIME_LEN]; 245 } __packed; 246 247 struct wired_cmd_ake_send_hprime_out { 248 struct hdcp_cmd_header header; 249 struct hdcp_port_id port; 250 } __packed; 251 252 /* 253 * HECI struct for sending in AKE pairing data generated by the Rx in an 254 * integrated wired HDCP Tx session. 255 */ 256 struct wired_cmd_ake_send_pairing_info_in { 257 struct hdcp_cmd_header header; 258 struct hdcp_port_id port; 259 u8 e_kh_km[HDCP_2_2_E_KH_KM_LEN]; 260 } __packed; 261 262 struct wired_cmd_ake_send_pairing_info_out { 263 struct hdcp_cmd_header header; 264 struct hdcp_port_id port; 265 } __packed; 266 267 /* Data structures for integrated wired HDCP2 Tx in support of the LC protocol*/ 268 /* 269 * HECI struct for initiating locality check with an 270 * integrated wired HDCP Tx session. 271 */ 272 struct wired_cmd_init_locality_check_in { 273 struct hdcp_cmd_header header; 274 struct hdcp_port_id port; 275 } __packed; 276 277 struct wired_cmd_init_locality_check_out { 278 struct hdcp_cmd_header header; 279 struct hdcp_port_id port; 280 u8 r_n[HDCP_2_2_RN_LEN]; 281 } __packed; 282 283 /* 284 * HECI struct for validating an Rx's LPrime value in an 285 * integrated wired HDCP Tx session. 286 */ 287 struct wired_cmd_validate_locality_in { 288 struct hdcp_cmd_header header; 289 struct hdcp_port_id port; 290 u8 l_prime[HDCP_2_2_L_PRIME_LEN]; 291 } __packed; 292 293 struct wired_cmd_validate_locality_out { 294 struct hdcp_cmd_header header; 295 struct hdcp_port_id port; 296 } __packed; 297 298 /* 299 * Data structures for integrated wired HDCP2 Tx in support of the 300 * SKE protocol 301 */ 302 /* HECI struct for creating session key */ 303 struct wired_cmd_get_session_key_in { 304 struct hdcp_cmd_header header; 305 struct hdcp_port_id port; 306 } __packed; 307 308 struct wired_cmd_get_session_key_out { 309 struct hdcp_cmd_header header; 310 struct hdcp_port_id port; 311 u8 e_dkey_ks[HDCP_2_2_E_DKEY_KS_LEN]; 312 u8 r_iv[HDCP_2_2_RIV_LEN]; 313 } __packed; 314 315 /* HECI struct for the Tx enable authentication command */ 316 struct wired_cmd_enable_auth_in { 317 struct hdcp_cmd_header header; 318 struct hdcp_port_id port; 319 u8 stream_type; 320 } __packed; 321 322 struct wired_cmd_enable_auth_out { 323 struct hdcp_cmd_header header; 324 struct hdcp_port_id port; 325 } __packed; 326 327 /* 328 * Data structures for integrated wired HDCP2 Tx in support of 329 * the repeater protocols 330 */ 331 /* 332 * HECI struct for verifying the downstream repeater's HDCP topology in an 333 * integrated wired HDCP Tx session. 334 */ 335 struct wired_cmd_verify_repeater_in { 336 struct hdcp_cmd_header header; 337 struct hdcp_port_id port; 338 u8 rx_info[HDCP_2_2_RXINFO_LEN]; 339 u8 seq_num_v[HDCP_2_2_SEQ_NUM_LEN]; 340 u8 v_prime[HDCP_2_2_V_PRIME_HALF_LEN]; 341 u8 receiver_ids[HDCP_2_2_RECEIVER_IDS_MAX_LEN]; 342 } __packed; 343 344 struct wired_cmd_verify_repeater_out { 345 struct hdcp_cmd_header header; 346 struct hdcp_port_id port; 347 u8 content_type_supported; 348 u8 v[HDCP_2_2_V_PRIME_HALF_LEN]; 349 } __packed; 350 351 /* 352 * HECI struct in support of stream management in an 353 * integrated wired HDCP Tx session. 354 */ 355 struct wired_cmd_repeater_auth_stream_req_in { 356 struct hdcp_cmd_header header; 357 struct hdcp_port_id port; 358 u8 seq_num_m[HDCP_2_2_SEQ_NUM_LEN]; 359 u8 m_prime[HDCP_2_2_MPRIME_LEN]; 360 __be16 k; 361 struct hdcp2_streamid_type streams[]; 362 } __packed; 363 364 struct wired_cmd_repeater_auth_stream_req_out { 365 struct hdcp_cmd_header header; 366 struct hdcp_port_id port; 367 } __packed; 368 #endif /* __MEI_HDCP_H__ */ 369