1/* SPDX-License-Identifier: (GPL-2.0+) */
2/*
3 * Copyright © 2017-2019 Intel Corporation
4 *
5 * Authors:
6 * Ramalingam C <ramalingam.c@intel.com>
7 */
8
9#ifndef _I915_HDCP_INTERFACE_H_
10#define _I915_HDCP_INTERFACE_H_
11
12#include <linux/mutex.h>
13#include <linux/device.h>
14#include <drm/display/drm_hdcp.h>
15
16/**
17 * enum hdcp_port_type - HDCP port implementation type defined by ME/GSC FW
18 * @HDCP_PORT_TYPE_INVALID: Invalid hdcp port type
19 * @HDCP_PORT_TYPE_INTEGRATED: In-Host HDCP2.x port
20 * @HDCP_PORT_TYPE_LSPCON: HDCP2.2 discrete wired Tx port with LSPCON
21 * (HDMI 2.0) solution
22 * @HDCP_PORT_TYPE_CPDP: HDCP2.2 discrete wired Tx port using the CPDP (DP 1.3)
23 * solution
24 */
25enum hdcp_port_type {
26 HDCP_PORT_TYPE_INVALID,
27 HDCP_PORT_TYPE_INTEGRATED,
28 HDCP_PORT_TYPE_LSPCON,
29 HDCP_PORT_TYPE_CPDP
30};
31
32/**
33 * enum hdcp_wired_protocol - HDCP adaptation used on the port
34 * @HDCP_PROTOCOL_INVALID: Invalid HDCP adaptation protocol
35 * @HDCP_PROTOCOL_HDMI: HDMI adaptation of HDCP used on the port
36 * @HDCP_PROTOCOL_DP: DP adaptation of HDCP used on the port
37 */
38enum hdcp_wired_protocol {
39 HDCP_PROTOCOL_INVALID,
40 HDCP_PROTOCOL_HDMI,
41 HDCP_PROTOCOL_DP
42};
43
44enum hdcp_ddi {
45 HDCP_DDI_INVALID_PORT = 0x0,
46
47 HDCP_DDI_B = 1,
48 HDCP_DDI_C,
49 HDCP_DDI_D,
50 HDCP_DDI_E,
51 HDCP_DDI_F,
52 HDCP_DDI_A = 7,
53 HDCP_DDI_RANGE_END = HDCP_DDI_A,
54};
55
56/**
57 * enum hdcp_transcoder - ME/GSC Firmware defined index for transcoders
58 * @HDCP_INVALID_TRANSCODER: Index for Invalid transcoder
59 * @HDCP_TRANSCODER_EDP: Index for EDP Transcoder
60 * @HDCP_TRANSCODER_DSI0: Index for DSI0 Transcoder
61 * @HDCP_TRANSCODER_DSI1: Index for DSI1 Transcoder
62 * @HDCP_TRANSCODER_A: Index for Transcoder A
63 * @HDCP_TRANSCODER_B: Index for Transcoder B
64 * @HDCP_TRANSCODER_C: Index for Transcoder C
65 * @HDCP_TRANSCODER_D: Index for Transcoder D
66 */
67enum hdcp_transcoder {
68 HDCP_INVALID_TRANSCODER = 0x00,
69 HDCP_TRANSCODER_EDP,
70 HDCP_TRANSCODER_DSI0,
71 HDCP_TRANSCODER_DSI1,
72 HDCP_TRANSCODER_A = 0x10,
73 HDCP_TRANSCODER_B,
74 HDCP_TRANSCODER_C,
75 HDCP_TRANSCODER_D
76};
77
78/**
79 * struct hdcp_port_data - intel specific HDCP port data
80 * @hdcp_ddi: ddi index as per ME/GSC FW
81 * @hdcp_transcoder: transcoder index as per ME/GSC FW
82 * @port_type: HDCP port type as per ME/GSC FW classification
83 * @protocol: HDCP adaptation as per ME/GSC FW
84 * @k: No of streams transmitted on a port. Only on DP MST this is != 1
85 * @seq_num_m: Count of RepeaterAuth_Stream_Manage msg propagated.
86 * Initialized to 0 on AKE_INIT. Incremented after every successful
87 * transmission of RepeaterAuth_Stream_Manage message. When it rolls
88 * over re-Auth has to be triggered.
89 * @streams: struct hdcp2_streamid_type[k]. Defines the type and id for the
90 * streams
91 */
92struct hdcp_port_data {
93 enum hdcp_ddi hdcp_ddi;
94 enum hdcp_transcoder hdcp_transcoder;
95 u8 port_type;
96 u8 protocol;
97 u16 k;
98 u32 seq_num_m;
99 struct hdcp2_streamid_type *streams;
100};
101
102/**
103 * struct i915_hdcp_ops- ops for HDCP2.2 services.
104 * @owner: Module providing the ops
105 * @initiate_hdcp2_session: Initiate a Wired HDCP2.2 Tx Session.
106 * And Prepare AKE_Init.
107 * @verify_receiver_cert_prepare_km: Verify the Receiver Certificate
108 * AKE_Send_Cert and prepare
109 * AKE_Stored_Km/AKE_No_Stored_Km
110 * @verify_hprime: Verify AKE_Send_H_prime
111 * @store_pairing_info: Store pairing info received
112 * @initiate_locality_check: Prepare LC_Init
113 * @verify_lprime: Verify lprime
114 * @get_session_key: Prepare SKE_Send_Eks
115 * @repeater_check_flow_prepare_ack: Validate the Downstream topology
116 * and prepare rep_ack
117 * @verify_mprime: Verify mprime
118 * @enable_hdcp_authentication: Mark a port as authenticated.
119 * @close_hdcp_session: Close the Wired HDCP Tx session per port.
120 * This also disables the authenticated state of the port.
121 */
122struct i915_hdcp_ops {
123 /**
124 * @owner: hdcp module
125 */
126 struct module *owner;
127
128 int (*initiate_hdcp2_session)(struct device *dev,
129 struct hdcp_port_data *data,
130 struct hdcp2_ake_init *ake_data);
131 int (*verify_receiver_cert_prepare_km)(struct device *dev,
132 struct hdcp_port_data *data,
133 struct hdcp2_ake_send_cert
134 *rx_cert,
135 bool *km_stored,
136 struct hdcp2_ake_no_stored_km
137 *ek_pub_km,
138 size_t *msg_sz);
139 int (*verify_hprime)(struct device *dev,
140 struct hdcp_port_data *data,
141 struct hdcp2_ake_send_hprime *rx_hprime);
142 int (*store_pairing_info)(struct device *dev,
143 struct hdcp_port_data *data,
144 struct hdcp2_ake_send_pairing_info
145 *pairing_info);
146 int (*initiate_locality_check)(struct device *dev,
147 struct hdcp_port_data *data,
148 struct hdcp2_lc_init *lc_init_data);
149 int (*verify_lprime)(struct device *dev,
150 struct hdcp_port_data *data,
151 struct hdcp2_lc_send_lprime *rx_lprime);
152 int (*get_session_key)(struct device *dev,
153 struct hdcp_port_data *data,
154 struct hdcp2_ske_send_eks *ske_data);
155 int (*repeater_check_flow_prepare_ack)(struct device *dev,
156 struct hdcp_port_data *data,
157 struct hdcp2_rep_send_receiverid_list
158 *rep_topology,
159 struct hdcp2_rep_send_ack
160 *rep_send_ack);
161 int (*verify_mprime)(struct device *dev,
162 struct hdcp_port_data *data,
163 struct hdcp2_rep_stream_ready *stream_ready);
164 int (*enable_hdcp_authentication)(struct device *dev,
165 struct hdcp_port_data *data);
166 int (*close_hdcp_session)(struct device *dev,
167 struct hdcp_port_data *data);
168};
169
170/**
171 * struct i915_hdcp_arbiter - Used for communication between i915
172 * and hdcp drivers for the HDCP2.2 services
173 */
174struct i915_hdcp_arbiter {
175 /**
176 * @hdcp_dev: device that provides the HDCP2.2 service from MEI Bus.
177 */
178 struct device *hdcp_dev;
179
180 /**
181 * @ops: Ops implemented by hdcp driver or intel_hdcp_gsc, used by i915
182 * driver.
183 */
184 const struct i915_hdcp_ops *ops;
185
186 /**
187 * @mutex: To protect the above members.
188 */
189 struct mutex mutex;
190};
191
192/* fw_hdcp_status: Enumeration of all HDCP Status Codes */
193enum fw_hdcp_status {
194 FW_HDCP_STATUS_SUCCESS = 0x0000,
195
196 /* WiDi Generic Status Codes */
197 FW_HDCP_STATUS_INTERNAL_ERROR = 0x1000,
198 FW_HDCP_STATUS_UNKNOWN_ERROR = 0x1001,
199 FW_HDCP_STATUS_INCORRECT_API_VERSION = 0x1002,
200 FW_HDCP_STATUS_INVALID_FUNCTION = 0x1003,
201 FW_HDCP_STATUS_INVALID_BUFFER_LENGTH = 0x1004,
202 FW_HDCP_STATUS_INVALID_PARAMS = 0x1005,
203 FW_HDCP_STATUS_AUTHENTICATION_FAILED = 0x1006,
204
205 /* WiDi Status Codes */
206 FW_HDCP_INVALID_SESSION_STATE = 0x6000,
207 FW_HDCP_SRM_FRAGMENT_UNEXPECTED = 0x6001,
208 FW_HDCP_SRM_INVALID_LENGTH = 0x6002,
209 FW_HDCP_SRM_FRAGMENT_OFFSET_INVALID = 0x6003,
210 FW_HDCP_SRM_VERIFICATION_FAILED = 0x6004,
211 FW_HDCP_SRM_VERSION_TOO_OLD = 0x6005,
212 FW_HDCP_RX_CERT_VERIFICATION_FAILED = 0x6006,
213 FW_HDCP_RX_REVOKED = 0x6007,
214 FW_HDCP_H_VERIFICATION_FAILED = 0x6008,
215 FW_HDCP_REPEATER_CHECK_UNEXPECTED = 0x6009,
216 FW_HDCP_TOPOLOGY_MAX_EXCEEDED = 0x600A,
217 FW_HDCP_V_VERIFICATION_FAILED = 0x600B,
218 FW_HDCP_L_VERIFICATION_FAILED = 0x600C,
219 FW_HDCP_STREAM_KEY_ALLOC_FAILED = 0x600D,
220 FW_HDCP_BASE_KEY_RESET_FAILED = 0x600E,
221 FW_HDCP_NONCE_GENERATION_FAILED = 0x600F,
222 FW_HDCP_STATUS_INVALID_E_KEY_STATE = 0x6010,
223 FW_HDCP_STATUS_INVALID_CS_ICV = 0x6011,
224 FW_HDCP_STATUS_INVALID_KB_KEY_STATE = 0x6012,
225 FW_HDCP_STATUS_INVALID_PAVP_MODE_ICV = 0x6013,
226 FW_HDCP_STATUS_INVALID_PAVP_MODE = 0x6014,
227 FW_HDCP_STATUS_LC_MAX_ATTEMPTS = 0x6015,
228
229 /* New status for HDCP 2.1 */
230 FW_HDCP_STATUS_MISMATCH_IN_M = 0x6016,
231
232 /* New status code for HDCP 2.2 Rx */
233 FW_HDCP_STATUS_RX_PROV_NOT_ALLOWED = 0x6017,
234 FW_HDCP_STATUS_RX_PROV_WRONG_SUBJECT = 0x6018,
235 FW_HDCP_RX_NEEDS_PROVISIONING = 0x6019,
236 FW_HDCP_BKSV_ICV_AUTH_FAILED = 0x6020,
237 FW_HDCP_STATUS_INVALID_STREAM_ID = 0x6021,
238 FW_HDCP_STATUS_CHAIN_NOT_INITIALIZED = 0x6022,
239 FW_HDCP_FAIL_NOT_EXPECTED = 0x6023,
240 FW_HDCP_FAIL_HDCP_OFF = 0x6024,
241 FW_HDCP_FAIL_INVALID_PAVP_MEMORY_MODE = 0x6025,
242 FW_HDCP_FAIL_AES_ECB_FAILURE = 0x6026,
243 FW_HDCP_FEATURE_NOT_SUPPORTED = 0x6027,
244 FW_HDCP_DMA_READ_ERROR = 0x6028,
245 FW_HDCP_DMA_WRITE_ERROR = 0x6029,
246 FW_HDCP_FAIL_INVALID_PACKET_SIZE = 0x6030,
247 FW_HDCP_H264_PARSING_ERROR = 0x6031,
248 FW_HDCP_HDCP2_ERRATA_VIDEO_VIOLATION = 0x6032,
249 FW_HDCP_HDCP2_ERRATA_AUDIO_VIOLATION = 0x6033,
250 FW_HDCP_TX_ACTIVE_ERROR = 0x6034,
251 FW_HDCP_MODE_CHANGE_ERROR = 0x6035,
252 FW_HDCP_STREAM_TYPE_ERROR = 0x6036,
253 FW_HDCP_STREAM_MANAGE_NOT_POSSIBLE = 0x6037,
254
255 FW_HDCP_STATUS_PORT_INVALID_COMMAND = 0x6038,
256 FW_HDCP_STATUS_UNSUPPORTED_PROTOCOL = 0x6039,
257 FW_HDCP_STATUS_INVALID_PORT_INDEX = 0x603a,
258 FW_HDCP_STATUS_TX_AUTH_NEEDED = 0x603b,
259 FW_HDCP_STATUS_NOT_INTEGRATED_PORT = 0x603c,
260 FW_HDCP_STATUS_SESSION_MAX_REACHED = 0x603d,
261
262 /* hdcp capable bit is not set in rx_caps(error is unique to DP) */
263 FW_HDCP_STATUS_NOT_HDCP_CAPABLE = 0x6041,
264
265 FW_HDCP_STATUS_INVALID_STREAM_COUNT = 0x6042,
266};
267
268#define HDCP_API_VERSION 0x00010000
269
270#define HDCP_M_LEN 16
271#define HDCP_KH_LEN 16
272
273/* Payload Buffer size(Excluding Header) for CMDs and corresponding response */
274/* Wired_Tx_AKE */
275#define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN (4 + 1)
276#define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_OUT (4 + 8 + 3)
277
278#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN (4 + 522 + 8 + 3)
279#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MIN_OUT (4 + 1 + 3 + 16 + 16)
280#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MAX_OUT (4 + 1 + 3 + 128)
281
282#define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN (4 + 32)
283#define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_OUT (4)
284
285#define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN (4 + 16)
286#define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_OUT (4)
287
288#define WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN (4)
289#define WIRED_CMD_BUF_LEN_CLOSE_SESSION_OUT (4)
290
291/* Wired_Tx_LC */
292#define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN (4)
293#define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_OUT (4 + 8)
294
295#define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN (4 + 32)
296#define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_OUT (4)
297
298/* Wired_Tx_SKE */
299#define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN (4)
300#define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_OUT (4 + 16 + 8)
301
302/* Wired_Tx_SKE */
303#define WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN (4 + 1)
304#define WIRED_CMD_BUF_LEN_ENABLE_AUTH_OUT (4)
305
306/* Wired_Tx_Repeater */
307#define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN (4 + 2 + 3 + 16 + 155)
308#define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_OUT (4 + 1 + 16)
309
310#define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN (4 + 3 + \
311 32 + 2 + 2)
312
313#define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_OUT (4)
314
315/* hdcp_command_id: Enumeration of all WIRED HDCP Command IDs */
316enum hdcp_command_id {
317 _WIDI_COMMAND_BASE = 0x00030000,
318 WIDI_INITIATE_HDCP2_SESSION = _WIDI_COMMAND_BASE,
319 HDCP_GET_SRM_STATUS,
320 HDCP_SEND_SRM_FRAGMENT,
321
322 /* The wired HDCP Tx commands */
323 _WIRED_COMMAND_BASE = 0x00031000,
324 WIRED_INITIATE_HDCP2_SESSION = _WIRED_COMMAND_BASE,
325 WIRED_VERIFY_RECEIVER_CERT,
326 WIRED_AKE_SEND_HPRIME,
327 WIRED_AKE_SEND_PAIRING_INFO,
328 WIRED_INIT_LOCALITY_CHECK,
329 WIRED_VALIDATE_LOCALITY,
330 WIRED_GET_SESSION_KEY,
331 WIRED_ENABLE_AUTH,
332 WIRED_VERIFY_REPEATER,
333 WIRED_REPEATER_AUTH_STREAM_REQ,
334 WIRED_CLOSE_SESSION,
335
336 _WIRED_COMMANDS_COUNT,
337};
338
339union encrypted_buff {
340 u8 e_kpub_km[HDCP_2_2_E_KPUB_KM_LEN];
341 u8 e_kh_km_m[HDCP_2_2_E_KH_KM_M_LEN];
342 struct {
343 u8 e_kh_km[HDCP_KH_LEN];
344 u8 m[HDCP_M_LEN];
345 } __packed;
346};
347
348/* HDCP HECI message header. All header values are little endian. */
349struct hdcp_cmd_header {
350 u32 api_version;
351 u32 command_id;
352 enum fw_hdcp_status status;
353 /* Length of the HECI message (excluding the header) */
354 u32 buffer_len;
355} __packed;
356
357/* Empty command request or response. No data follows the header. */
358struct hdcp_cmd_no_data {
359 struct hdcp_cmd_header header;
360} __packed;
361
362/* Uniquely identifies the hdcp port being addressed for a given command. */
363struct hdcp_port_id {
364 u8 integrated_port_type;
365 /* physical_port is used until Gen11.5. Must be zero for Gen11.5+ */
366 u8 physical_port;
367 /* attached_transcoder is for Gen11.5+. Set to zero for <Gen11.5 */
368 u8 attached_transcoder;
369 u8 reserved;
370} __packed;
371
372/*
373 * Data structures for integrated wired HDCP2 Tx in
374 * support of the AKE protocol
375 */
376/* HECI struct for integrated wired HDCP Tx session initiation. */
377struct wired_cmd_initiate_hdcp2_session_in {
378 struct hdcp_cmd_header header;
379 struct hdcp_port_id port;
380 u8 protocol; /* for HDMI vs DP */
381} __packed;
382
383struct wired_cmd_initiate_hdcp2_session_out {
384 struct hdcp_cmd_header header;
385 struct hdcp_port_id port;
386 u8 r_tx[HDCP_2_2_RTX_LEN];
387 struct hdcp2_tx_caps tx_caps;
388} __packed;
389
390/* HECI struct for ending an integrated wired HDCP Tx session. */
391struct wired_cmd_close_session_in {
392 struct hdcp_cmd_header header;
393 struct hdcp_port_id port;
394} __packed;
395
396struct wired_cmd_close_session_out {
397 struct hdcp_cmd_header header;
398 struct hdcp_port_id port;
399} __packed;
400
401/* HECI struct for integrated wired HDCP Tx Rx Cert verification. */
402struct wired_cmd_verify_receiver_cert_in {
403 struct hdcp_cmd_header header;
404 struct hdcp_port_id port;
405 struct hdcp2_cert_rx cert_rx;
406 u8 r_rx[HDCP_2_2_RRX_LEN];
407 u8 rx_caps[HDCP_2_2_RXCAPS_LEN];
408} __packed;
409
410struct wired_cmd_verify_receiver_cert_out {
411 struct hdcp_cmd_header header;
412 struct hdcp_port_id port;
413 u8 km_stored;
414 u8 reserved[3];
415 union encrypted_buff ekm_buff;
416} __packed;
417
418/* HECI struct for verification of Rx's Hprime in a HDCP Tx session */
419struct wired_cmd_ake_send_hprime_in {
420 struct hdcp_cmd_header header;
421 struct hdcp_port_id port;
422 u8 h_prime[HDCP_2_2_H_PRIME_LEN];
423} __packed;
424
425struct wired_cmd_ake_send_hprime_out {
426 struct hdcp_cmd_header header;
427 struct hdcp_port_id port;
428} __packed;
429
430/*
431 * HECI struct for sending in AKE pairing data generated by the Rx in an
432 * integrated wired HDCP Tx session.
433 */
434struct wired_cmd_ake_send_pairing_info_in {
435 struct hdcp_cmd_header header;
436 struct hdcp_port_id port;
437 u8 e_kh_km[HDCP_2_2_E_KH_KM_LEN];
438} __packed;
439
440struct wired_cmd_ake_send_pairing_info_out {
441 struct hdcp_cmd_header header;
442 struct hdcp_port_id port;
443} __packed;
444
445/* Data structures for integrated wired HDCP2 Tx in support of the LC protocol*/
446/*
447 * HECI struct for initiating locality check with an
448 * integrated wired HDCP Tx session.
449 */
450struct wired_cmd_init_locality_check_in {
451 struct hdcp_cmd_header header;
452 struct hdcp_port_id port;
453} __packed;
454
455struct wired_cmd_init_locality_check_out {
456 struct hdcp_cmd_header header;
457 struct hdcp_port_id port;
458 u8 r_n[HDCP_2_2_RN_LEN];
459} __packed;
460
461/*
462 * HECI struct for validating an Rx's LPrime value in an
463 * integrated wired HDCP Tx session.
464 */
465struct wired_cmd_validate_locality_in {
466 struct hdcp_cmd_header header;
467 struct hdcp_port_id port;
468 u8 l_prime[HDCP_2_2_L_PRIME_LEN];
469} __packed;
470
471struct wired_cmd_validate_locality_out {
472 struct hdcp_cmd_header header;
473 struct hdcp_port_id port;
474} __packed;
475
476/*
477 * Data structures for integrated wired HDCP2 Tx in support of the
478 * SKE protocol
479 */
480/* HECI struct for creating session key */
481struct wired_cmd_get_session_key_in {
482 struct hdcp_cmd_header header;
483 struct hdcp_port_id port;
484} __packed;
485
486struct wired_cmd_get_session_key_out {
487 struct hdcp_cmd_header header;
488 struct hdcp_port_id port;
489 u8 e_dkey_ks[HDCP_2_2_E_DKEY_KS_LEN];
490 u8 r_iv[HDCP_2_2_RIV_LEN];
491} __packed;
492
493/* HECI struct for the Tx enable authentication command */
494struct wired_cmd_enable_auth_in {
495 struct hdcp_cmd_header header;
496 struct hdcp_port_id port;
497 u8 stream_type;
498} __packed;
499
500struct wired_cmd_enable_auth_out {
501 struct hdcp_cmd_header header;
502 struct hdcp_port_id port;
503} __packed;
504
505/*
506 * Data structures for integrated wired HDCP2 Tx in support of
507 * the repeater protocols
508 */
509/*
510 * HECI struct for verifying the downstream repeater's HDCP topology in an
511 * integrated wired HDCP Tx session.
512 */
513struct wired_cmd_verify_repeater_in {
514 struct hdcp_cmd_header header;
515 struct hdcp_port_id port;
516 u8 rx_info[HDCP_2_2_RXINFO_LEN];
517 u8 seq_num_v[HDCP_2_2_SEQ_NUM_LEN];
518 u8 v_prime[HDCP_2_2_V_PRIME_HALF_LEN];
519 u8 receiver_ids[HDCP_2_2_RECEIVER_IDS_MAX_LEN];
520} __packed;
521
522struct wired_cmd_verify_repeater_out {
523 struct hdcp_cmd_header header;
524 struct hdcp_port_id port;
525 u8 content_type_supported;
526 u8 v[HDCP_2_2_V_PRIME_HALF_LEN];
527} __packed;
528
529/*
530 * HECI struct in support of stream management in an
531 * integrated wired HDCP Tx session.
532 */
533struct wired_cmd_repeater_auth_stream_req_in {
534 struct hdcp_cmd_header header;
535 struct hdcp_port_id port;
536 u8 seq_num_m[HDCP_2_2_SEQ_NUM_LEN];
537 u8 m_prime[HDCP_2_2_MPRIME_LEN];
538 __be16 k;
539 struct hdcp2_streamid_type streams[];
540} __packed;
541
542struct wired_cmd_repeater_auth_stream_req_out {
543 struct hdcp_cmd_header header;
544 struct hdcp_port_id port;
545} __packed;
546
547#endif /* _I915_HDCP_INTERFACE_H_ */
548

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source code of linux/include/drm/intel/i915_hdcp_interface.h