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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_tc - 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 * @hdcp_dev: device that provide the HDCP2.2 service from MEI Bus.
174 * @hdcp_ops: Ops implemented by hdcp driver or intel_hdcp_gsc , used by i915 driver.
175 */
176struct i915_hdcp_arbiter {
177 struct device *hdcp_dev;
178 const struct i915_hdcp_ops *ops;
179
180 /* To protect the above members. */
181 struct mutex mutex;
182};
183
184/* fw_hdcp_status: Enumeration of all HDCP Status Codes */
185enum fw_hdcp_status {
186 FW_HDCP_STATUS_SUCCESS = 0x0000,
187
188 /* WiDi Generic Status Codes */
189 FW_HDCP_STATUS_INTERNAL_ERROR = 0x1000,
190 FW_HDCP_STATUS_UNKNOWN_ERROR = 0x1001,
191 FW_HDCP_STATUS_INCORRECT_API_VERSION = 0x1002,
192 FW_HDCP_STATUS_INVALID_FUNCTION = 0x1003,
193 FW_HDCP_STATUS_INVALID_BUFFER_LENGTH = 0x1004,
194 FW_HDCP_STATUS_INVALID_PARAMS = 0x1005,
195 FW_HDCP_STATUS_AUTHENTICATION_FAILED = 0x1006,
196
197 /* WiDi Status Codes */
198 FW_HDCP_INVALID_SESSION_STATE = 0x6000,
199 FW_HDCP_SRM_FRAGMENT_UNEXPECTED = 0x6001,
200 FW_HDCP_SRM_INVALID_LENGTH = 0x6002,
201 FW_HDCP_SRM_FRAGMENT_OFFSET_INVALID = 0x6003,
202 FW_HDCP_SRM_VERIFICATION_FAILED = 0x6004,
203 FW_HDCP_SRM_VERSION_TOO_OLD = 0x6005,
204 FW_HDCP_RX_CERT_VERIFICATION_FAILED = 0x6006,
205 FW_HDCP_RX_REVOKED = 0x6007,
206 FW_HDCP_H_VERIFICATION_FAILED = 0x6008,
207 FW_HDCP_REPEATER_CHECK_UNEXPECTED = 0x6009,
208 FW_HDCP_TOPOLOGY_MAX_EXCEEDED = 0x600A,
209 FW_HDCP_V_VERIFICATION_FAILED = 0x600B,
210 FW_HDCP_L_VERIFICATION_FAILED = 0x600C,
211 FW_HDCP_STREAM_KEY_ALLOC_FAILED = 0x600D,
212 FW_HDCP_BASE_KEY_RESET_FAILED = 0x600E,
213 FW_HDCP_NONCE_GENERATION_FAILED = 0x600F,
214 FW_HDCP_STATUS_INVALID_E_KEY_STATE = 0x6010,
215 FW_HDCP_STATUS_INVALID_CS_ICV = 0x6011,
216 FW_HDCP_STATUS_INVALID_KB_KEY_STATE = 0x6012,
217 FW_HDCP_STATUS_INVALID_PAVP_MODE_ICV = 0x6013,
218 FW_HDCP_STATUS_INVALID_PAVP_MODE = 0x6014,
219 FW_HDCP_STATUS_LC_MAX_ATTEMPTS = 0x6015,
220
221 /* New status for HDCP 2.1 */
222 FW_HDCP_STATUS_MISMATCH_IN_M = 0x6016,
223
224 /* New status code for HDCP 2.2 Rx */
225 FW_HDCP_STATUS_RX_PROV_NOT_ALLOWED = 0x6017,
226 FW_HDCP_STATUS_RX_PROV_WRONG_SUBJECT = 0x6018,
227 FW_HDCP_RX_NEEDS_PROVISIONING = 0x6019,
228 FW_HDCP_BKSV_ICV_AUTH_FAILED = 0x6020,
229 FW_HDCP_STATUS_INVALID_STREAM_ID = 0x6021,
230 FW_HDCP_STATUS_CHAIN_NOT_INITIALIZED = 0x6022,
231 FW_HDCP_FAIL_NOT_EXPECTED = 0x6023,
232 FW_HDCP_FAIL_HDCP_OFF = 0x6024,
233 FW_HDCP_FAIL_INVALID_PAVP_MEMORY_MODE = 0x6025,
234 FW_HDCP_FAIL_AES_ECB_FAILURE = 0x6026,
235 FW_HDCP_FEATURE_NOT_SUPPORTED = 0x6027,
236 FW_HDCP_DMA_READ_ERROR = 0x6028,
237 FW_HDCP_DMA_WRITE_ERROR = 0x6029,
238 FW_HDCP_FAIL_INVALID_PACKET_SIZE = 0x6030,
239 FW_HDCP_H264_PARSING_ERROR = 0x6031,
240 FW_HDCP_HDCP2_ERRATA_VIDEO_VIOLATION = 0x6032,
241 FW_HDCP_HDCP2_ERRATA_AUDIO_VIOLATION = 0x6033,
242 FW_HDCP_TX_ACTIVE_ERROR = 0x6034,
243 FW_HDCP_MODE_CHANGE_ERROR = 0x6035,
244 FW_HDCP_STREAM_TYPE_ERROR = 0x6036,
245 FW_HDCP_STREAM_MANAGE_NOT_POSSIBLE = 0x6037,
246
247 FW_HDCP_STATUS_PORT_INVALID_COMMAND = 0x6038,
248 FW_HDCP_STATUS_UNSUPPORTED_PROTOCOL = 0x6039,
249 FW_HDCP_STATUS_INVALID_PORT_INDEX = 0x603a,
250 FW_HDCP_STATUS_TX_AUTH_NEEDED = 0x603b,
251 FW_HDCP_STATUS_NOT_INTEGRATED_PORT = 0x603c,
252 FW_HDCP_STATUS_SESSION_MAX_REACHED = 0x603d,
253
254 /* hdcp capable bit is not set in rx_caps(error is unique to DP) */
255 FW_HDCP_STATUS_NOT_HDCP_CAPABLE = 0x6041,
256
257 FW_HDCP_STATUS_INVALID_STREAM_COUNT = 0x6042,
258};
259
260#define HDCP_API_VERSION 0x00010000
261
262#define HDCP_M_LEN 16
263#define HDCP_KH_LEN 16
264
265/* Payload Buffer size(Excluding Header) for CMDs and corresponding response */
266/* Wired_Tx_AKE */
267#define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN (4 + 1)
268#define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_OUT (4 + 8 + 3)
269
270#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN (4 + 522 + 8 + 3)
271#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MIN_OUT (4 + 1 + 3 + 16 + 16)
272#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MAX_OUT (4 + 1 + 3 + 128)
273
274#define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN (4 + 32)
275#define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_OUT (4)
276
277#define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN (4 + 16)
278#define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_OUT (4)
279
280#define WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN (4)
281#define WIRED_CMD_BUF_LEN_CLOSE_SESSION_OUT (4)
282
283/* Wired_Tx_LC */
284#define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN (4)
285#define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_OUT (4 + 8)
286
287#define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN (4 + 32)
288#define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_OUT (4)
289
290/* Wired_Tx_SKE */
291#define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN (4)
292#define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_OUT (4 + 16 + 8)
293
294/* Wired_Tx_SKE */
295#define WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN (4 + 1)
296#define WIRED_CMD_BUF_LEN_ENABLE_AUTH_OUT (4)
297
298/* Wired_Tx_Repeater */
299#define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN (4 + 2 + 3 + 16 + 155)
300#define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_OUT (4 + 1 + 16)
301
302#define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN (4 + 3 + \
303 32 + 2 + 2)
304
305#define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_OUT (4)
306
307/* hdcp_command_id: Enumeration of all WIRED HDCP Command IDs */
308enum hdcp_command_id {
309 _WIDI_COMMAND_BASE = 0x00030000,
310 WIDI_INITIATE_HDCP2_SESSION = _WIDI_COMMAND_BASE,
311 HDCP_GET_SRM_STATUS,
312 HDCP_SEND_SRM_FRAGMENT,
313
314 /* The wired HDCP Tx commands */
315 _WIRED_COMMAND_BASE = 0x00031000,
316 WIRED_INITIATE_HDCP2_SESSION = _WIRED_COMMAND_BASE,
317 WIRED_VERIFY_RECEIVER_CERT,
318 WIRED_AKE_SEND_HPRIME,
319 WIRED_AKE_SEND_PAIRING_INFO,
320 WIRED_INIT_LOCALITY_CHECK,
321 WIRED_VALIDATE_LOCALITY,
322 WIRED_GET_SESSION_KEY,
323 WIRED_ENABLE_AUTH,
324 WIRED_VERIFY_REPEATER,
325 WIRED_REPEATER_AUTH_STREAM_REQ,
326 WIRED_CLOSE_SESSION,
327
328 _WIRED_COMMANDS_COUNT,
329};
330
331union encrypted_buff {
332 u8 e_kpub_km[HDCP_2_2_E_KPUB_KM_LEN];
333 u8 e_kh_km_m[HDCP_2_2_E_KH_KM_M_LEN];
334 struct {
335 u8 e_kh_km[HDCP_KH_LEN];
336 u8 m[HDCP_M_LEN];
337 } __packed;
338};
339
340/* HDCP HECI message header. All header values are little endian. */
341struct hdcp_cmd_header {
342 u32 api_version;
343 u32 command_id;
344 enum fw_hdcp_status status;
345 /* Length of the HECI message (excluding the header) */
346 u32 buffer_len;
347} __packed;
348
349/* Empty command request or response. No data follows the header. */
350struct hdcp_cmd_no_data {
351 struct hdcp_cmd_header header;
352} __packed;
353
354/* Uniquely identifies the hdcp port being addressed for a given command. */
355struct hdcp_port_id {
356 u8 integrated_port_type;
357 /* physical_port is used until Gen11.5. Must be zero for Gen11.5+ */
358 u8 physical_port;
359 /* attached_transcoder is for Gen11.5+. Set to zero for <Gen11.5 */
360 u8 attached_transcoder;
361 u8 reserved;
362} __packed;
363
364/*
365 * Data structures for integrated wired HDCP2 Tx in
366 * support of the AKE protocol
367 */
368/* HECI struct for integrated wired HDCP Tx session initiation. */
369struct wired_cmd_initiate_hdcp2_session_in {
370 struct hdcp_cmd_header header;
371 struct hdcp_port_id port;
372 u8 protocol; /* for HDMI vs DP */
373} __packed;
374
375struct wired_cmd_initiate_hdcp2_session_out {
376 struct hdcp_cmd_header header;
377 struct hdcp_port_id port;
378 u8 r_tx[HDCP_2_2_RTX_LEN];
379 struct hdcp2_tx_caps tx_caps;
380} __packed;
381
382/* HECI struct for ending an integrated wired HDCP Tx session. */
383struct wired_cmd_close_session_in {
384 struct hdcp_cmd_header header;
385 struct hdcp_port_id port;
386} __packed;
387
388struct wired_cmd_close_session_out {
389 struct hdcp_cmd_header header;
390 struct hdcp_port_id port;
391} __packed;
392
393/* HECI struct for integrated wired HDCP Tx Rx Cert verification. */
394struct wired_cmd_verify_receiver_cert_in {
395 struct hdcp_cmd_header header;
396 struct hdcp_port_id port;
397 struct hdcp2_cert_rx cert_rx;
398 u8 r_rx[HDCP_2_2_RRX_LEN];
399 u8 rx_caps[HDCP_2_2_RXCAPS_LEN];
400} __packed;
401
402struct wired_cmd_verify_receiver_cert_out {
403 struct hdcp_cmd_header header;
404 struct hdcp_port_id port;
405 u8 km_stored;
406 u8 reserved[3];
407 union encrypted_buff ekm_buff;
408} __packed;
409
410/* HECI struct for verification of Rx's Hprime in a HDCP Tx session */
411struct wired_cmd_ake_send_hprime_in {
412 struct hdcp_cmd_header header;
413 struct hdcp_port_id port;
414 u8 h_prime[HDCP_2_2_H_PRIME_LEN];
415} __packed;
416
417struct wired_cmd_ake_send_hprime_out {
418 struct hdcp_cmd_header header;
419 struct hdcp_port_id port;
420} __packed;
421
422/*
423 * HECI struct for sending in AKE pairing data generated by the Rx in an
424 * integrated wired HDCP Tx session.
425 */
426struct wired_cmd_ake_send_pairing_info_in {
427 struct hdcp_cmd_header header;
428 struct hdcp_port_id port;
429 u8 e_kh_km[HDCP_2_2_E_KH_KM_LEN];
430} __packed;
431
432struct wired_cmd_ake_send_pairing_info_out {
433 struct hdcp_cmd_header header;
434 struct hdcp_port_id port;
435} __packed;
436
437/* Data structures for integrated wired HDCP2 Tx in support of the LC protocol*/
438/*
439 * HECI struct for initiating locality check with an
440 * integrated wired HDCP Tx session.
441 */
442struct wired_cmd_init_locality_check_in {
443 struct hdcp_cmd_header header;
444 struct hdcp_port_id port;
445} __packed;
446
447struct wired_cmd_init_locality_check_out {
448 struct hdcp_cmd_header header;
449 struct hdcp_port_id port;
450 u8 r_n[HDCP_2_2_RN_LEN];
451} __packed;
452
453/*
454 * HECI struct for validating an Rx's LPrime value in an
455 * integrated wired HDCP Tx session.
456 */
457struct wired_cmd_validate_locality_in {
458 struct hdcp_cmd_header header;
459 struct hdcp_port_id port;
460 u8 l_prime[HDCP_2_2_L_PRIME_LEN];
461} __packed;
462
463struct wired_cmd_validate_locality_out {
464 struct hdcp_cmd_header header;
465 struct hdcp_port_id port;
466} __packed;
467
468/*
469 * Data structures for integrated wired HDCP2 Tx in support of the
470 * SKE protocol
471 */
472/* HECI struct for creating session key */
473struct wired_cmd_get_session_key_in {
474 struct hdcp_cmd_header header;
475 struct hdcp_port_id port;
476} __packed;
477
478struct wired_cmd_get_session_key_out {
479 struct hdcp_cmd_header header;
480 struct hdcp_port_id port;
481 u8 e_dkey_ks[HDCP_2_2_E_DKEY_KS_LEN];
482 u8 r_iv[HDCP_2_2_RIV_LEN];
483} __packed;
484
485/* HECI struct for the Tx enable authentication command */
486struct wired_cmd_enable_auth_in {
487 struct hdcp_cmd_header header;
488 struct hdcp_port_id port;
489 u8 stream_type;
490} __packed;
491
492struct wired_cmd_enable_auth_out {
493 struct hdcp_cmd_header header;
494 struct hdcp_port_id port;
495} __packed;
496
497/*
498 * Data structures for integrated wired HDCP2 Tx in support of
499 * the repeater protocols
500 */
501/*
502 * HECI struct for verifying the downstream repeater's HDCP topology in an
503 * integrated wired HDCP Tx session.
504 */
505struct wired_cmd_verify_repeater_in {
506 struct hdcp_cmd_header header;
507 struct hdcp_port_id port;
508 u8 rx_info[HDCP_2_2_RXINFO_LEN];
509 u8 seq_num_v[HDCP_2_2_SEQ_NUM_LEN];
510 u8 v_prime[HDCP_2_2_V_PRIME_HALF_LEN];
511 u8 receiver_ids[HDCP_2_2_RECEIVER_IDS_MAX_LEN];
512} __packed;
513
514struct wired_cmd_verify_repeater_out {
515 struct hdcp_cmd_header header;
516 struct hdcp_port_id port;
517 u8 content_type_supported;
518 u8 v[HDCP_2_2_V_PRIME_HALF_LEN];
519} __packed;
520
521/*
522 * HECI struct in support of stream management in an
523 * integrated wired HDCP Tx session.
524 */
525struct wired_cmd_repeater_auth_stream_req_in {
526 struct hdcp_cmd_header header;
527 struct hdcp_port_id port;
528 u8 seq_num_m[HDCP_2_2_SEQ_NUM_LEN];
529 u8 m_prime[HDCP_2_2_MPRIME_LEN];
530 __be16 k;
531 struct hdcp2_streamid_type streams[];
532} __packed;
533
534struct wired_cmd_repeater_auth_stream_req_out {
535 struct hdcp_cmd_header header;
536 struct hdcp_port_id port;
537} __packed;
538
539#endif /* _I915_HDCP_INTERFACE_H_ */