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1/*
2 * Copyright 2018 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: AMD
23 *
24 */
25
26#include <linux/delay.h>
27
28#include "hdcp.h"
29
30static inline enum mod_hdcp_status check_receiver_id_list_ready(struct mod_hdcp *hdcp)
31{
32 uint8_t is_ready = 0;
33
34 if (is_dp_hdcp(hdcp))
35 is_ready = HDCP_2_2_DP_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus_dp) ? 1 : 0;
36 else
37 is_ready = (HDCP_2_2_HDMI_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus[1]) &&
38 (HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
39 hdcp->auth.msg.hdcp2.rxstatus[0])) ? 1 : 0;
40 return is_ready ? MOD_HDCP_STATUS_SUCCESS :
41 MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY;
42}
43
44static inline enum mod_hdcp_status check_hdcp2_capable(struct mod_hdcp *hdcp)
45{
46 enum mod_hdcp_status status;
47
48 if (is_dp_hdcp(hdcp))
49 status = (hdcp->auth.msg.hdcp2.rxcaps_dp[0] == HDCP_2_2_RX_CAPS_VERSION_VAL) &&
50 HDCP_2_2_DP_HDCP_CAPABLE(hdcp->auth.msg.hdcp2.rxcaps_dp[2]) ?
51 MOD_HDCP_STATUS_SUCCESS :
52 MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE;
53 else
54 status = (hdcp->auth.msg.hdcp2.hdcp2version_hdmi & HDCP_2_2_HDMI_SUPPORT_MASK) ?
55 MOD_HDCP_STATUS_SUCCESS :
56 MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE;
57 return status;
58}
59
60static inline enum mod_hdcp_status check_reauthentication_request(
61 struct mod_hdcp *hdcp)
62{
63 uint8_t ret = 0;
64
65 if (is_dp_hdcp(hdcp))
66 ret = HDCP_2_2_DP_RXSTATUS_REAUTH_REQ(hdcp->auth.msg.hdcp2.rxstatus_dp) ?
67 MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST :
68 MOD_HDCP_STATUS_SUCCESS;
69 else
70 ret = HDCP_2_2_HDMI_RXSTATUS_REAUTH_REQ(hdcp->auth.msg.hdcp2.rxstatus[1]) ?
71 MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST :
72 MOD_HDCP_STATUS_SUCCESS;
73 return ret;
74}
75
76static inline enum mod_hdcp_status check_link_integrity_failure_dp(
77 struct mod_hdcp *hdcp)
78{
79 return HDCP_2_2_DP_RXSTATUS_LINK_FAILED(hdcp->auth.msg.hdcp2.rxstatus_dp) ?
80 MOD_HDCP_STATUS_HDCP2_REAUTH_LINK_INTEGRITY_FAILURE :
81 MOD_HDCP_STATUS_SUCCESS;
82}
83
84static enum mod_hdcp_status check_ake_cert_available(struct mod_hdcp *hdcp)
85{
86 enum mod_hdcp_status status;
87 uint16_t size;
88
89 if (is_dp_hdcp(hdcp)) {
90 status = MOD_HDCP_STATUS_SUCCESS;
91 } else {
92 status = mod_hdcp_read_rxstatus(hdcp);
93 if (status == MOD_HDCP_STATUS_SUCCESS) {
94 size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
95 hdcp->auth.msg.hdcp2.rxstatus[0];
96 status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_cert)) ?
97 MOD_HDCP_STATUS_SUCCESS :
98 MOD_HDCP_STATUS_HDCP2_AKE_CERT_PENDING;
99 }
100 }
101 return status;
102}
103
104static enum mod_hdcp_status check_h_prime_available(struct mod_hdcp *hdcp)
105{
106 enum mod_hdcp_status status;
107 uint8_t size;
108
109 status = mod_hdcp_read_rxstatus(hdcp);
110 if (status != MOD_HDCP_STATUS_SUCCESS)
111 goto out;
112
113 if (is_dp_hdcp(hdcp)) {
114 status = HDCP_2_2_DP_RXSTATUS_H_PRIME(hdcp->auth.msg.hdcp2.rxstatus_dp) ?
115 MOD_HDCP_STATUS_SUCCESS :
116 MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING;
117 } else {
118 size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
119 hdcp->auth.msg.hdcp2.rxstatus[0];
120 status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_h_prime)) ?
121 MOD_HDCP_STATUS_SUCCESS :
122 MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING;
123 }
124out:
125 return status;
126}
127
128static enum mod_hdcp_status check_pairing_info_available(struct mod_hdcp *hdcp)
129{
130 enum mod_hdcp_status status;
131 uint8_t size;
132
133 status = mod_hdcp_read_rxstatus(hdcp);
134 if (status != MOD_HDCP_STATUS_SUCCESS)
135 goto out;
136
137 if (is_dp_hdcp(hdcp)) {
138 status = HDCP_2_2_DP_RXSTATUS_PAIRING(hdcp->auth.msg.hdcp2.rxstatus_dp) ?
139 MOD_HDCP_STATUS_SUCCESS :
140 MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING;
141 } else {
142 size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
143 hdcp->auth.msg.hdcp2.rxstatus[0];
144 status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_pairing_info)) ?
145 MOD_HDCP_STATUS_SUCCESS :
146 MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING;
147 }
148out:
149 return status;
150}
151
152static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp)
153{
154 enum mod_hdcp_status status;
155 uint8_t size;
156 uint16_t max_wait = 20; // units of ms
157 uint16_t num_polls = 5;
158 uint16_t wait_time = max_wait / num_polls;
159
160 if (is_dp_hdcp(hdcp))
161 status = MOD_HDCP_STATUS_INVALID_OPERATION;
162 else
163 for (; num_polls; num_polls--) {
164 msleep(wait_time);
165
166 status = mod_hdcp_read_rxstatus(hdcp);
167 if (status != MOD_HDCP_STATUS_SUCCESS)
168 break;
169
170 size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
171 hdcp->auth.msg.hdcp2.rxstatus[0];
172 status = (size == sizeof(hdcp->auth.msg.hdcp2.lc_l_prime)) ?
173 MOD_HDCP_STATUS_SUCCESS :
174 MOD_HDCP_STATUS_HDCP2_L_PRIME_PENDING;
175 if (status == MOD_HDCP_STATUS_SUCCESS)
176 break;
177 }
178 return status;
179}
180
181static enum mod_hdcp_status check_stream_ready_available(struct mod_hdcp *hdcp)
182{
183 enum mod_hdcp_status status;
184 uint8_t size;
185
186 if (is_dp_hdcp(hdcp)) {
187 status = MOD_HDCP_STATUS_INVALID_OPERATION;
188 } else {
189 status = mod_hdcp_read_rxstatus(hdcp);
190 if (status != MOD_HDCP_STATUS_SUCCESS)
191 goto out;
192 size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
193 hdcp->auth.msg.hdcp2.rxstatus[0];
194 status = (size == sizeof(hdcp->auth.msg.hdcp2.repeater_auth_stream_ready)) ?
195 MOD_HDCP_STATUS_SUCCESS :
196 MOD_HDCP_STATUS_HDCP2_STREAM_READY_PENDING;
197 }
198out:
199 return status;
200}
201
202static inline uint8_t get_device_count(struct mod_hdcp *hdcp)
203{
204 return HDCP_2_2_DEV_COUNT_LO(hdcp->auth.msg.hdcp2.rx_id_list[2]) +
205 (HDCP_2_2_DEV_COUNT_HI(hdcp->auth.msg.hdcp2.rx_id_list[1]) << 4);
206}
207
208static enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp)
209{
210 /* device count must be greater than or equal to tracked hdcp displays */
211 return (get_device_count(hdcp) < get_active_display_count(hdcp)) ?
212 MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE :
213 MOD_HDCP_STATUS_SUCCESS;
214}
215
216static uint8_t process_rxstatus(struct mod_hdcp *hdcp,
217 struct mod_hdcp_event_context *event_ctx,
218 struct mod_hdcp_transition_input_hdcp2 *input,
219 enum mod_hdcp_status *status)
220{
221 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxstatus,
222 &input->rxstatus_read, status,
223 hdcp, "rxstatus_read"))
224 goto out;
225 if (!mod_hdcp_execute_and_set(check_reauthentication_request,
226 &input->reauth_request_check, status,
227 hdcp, "reauth_request_check"))
228 goto out;
229 if (is_dp_hdcp(hdcp)) {
230 if (!mod_hdcp_execute_and_set(check_link_integrity_failure_dp,
231 &input->link_integrity_check_dp, status,
232 hdcp, "link_integrity_check_dp"))
233 goto out;
234 }
235 if (hdcp->connection.is_repeater)
236 if (check_receiver_id_list_ready(hdcp) ==
237 MOD_HDCP_STATUS_SUCCESS) {
238 HDCP_INPUT_PASS_TRACE(hdcp, "rx_id_list_ready");
239 event_ctx->rx_id_list_ready = 1;
240 if (is_dp_hdcp(hdcp))
241 hdcp->auth.msg.hdcp2.rx_id_list_size =
242 sizeof(hdcp->auth.msg.hdcp2.rx_id_list);
243 else
244 hdcp->auth.msg.hdcp2.rx_id_list_size =
245 HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
246 hdcp->auth.msg.hdcp2.rxstatus[0];
247 }
248out:
249 return (*status == MOD_HDCP_STATUS_SUCCESS);
250}
251
252static enum mod_hdcp_status known_hdcp2_capable_rx(struct mod_hdcp *hdcp,
253 struct mod_hdcp_event_context *event_ctx,
254 struct mod_hdcp_transition_input_hdcp2 *input)
255{
256 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
257
258 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
259 event_ctx->unexpected_event = 1;
260 goto out;
261 }
262
263 if (!mod_hdcp_execute_and_set(mod_hdcp_read_hdcp2version,
264 &input->hdcp2version_read, &status,
265 hdcp, "hdcp2version_read"))
266 goto out;
267 if (!mod_hdcp_execute_and_set(check_hdcp2_capable,
268 &input->hdcp2_capable_check, &status,
269 hdcp, "hdcp2_capable"))
270 goto out;
271out:
272 return status;
273}
274
275static enum mod_hdcp_status send_ake_init(struct mod_hdcp *hdcp,
276 struct mod_hdcp_event_context *event_ctx,
277 struct mod_hdcp_transition_input_hdcp2 *input)
278{
279 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
280
281 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
282 event_ctx->unexpected_event = 1;
283 goto out;
284 }
285
286 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_create_session,
287 &input->create_session, &status,
288 hdcp, "create_session"))
289 goto out;
290 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_ake_init,
291 &input->ake_init_prepare, &status,
292 hdcp, "ake_init_prepare"))
293 goto out;
294 if (!mod_hdcp_execute_and_set(mod_hdcp_write_ake_init,
295 &input->ake_init_write, &status,
296 hdcp, "ake_init_write"))
297 goto out;
298out:
299 return status;
300}
301
302static enum mod_hdcp_status validate_ake_cert(struct mod_hdcp *hdcp,
303 struct mod_hdcp_event_context *event_ctx,
304 struct mod_hdcp_transition_input_hdcp2 *input)
305{
306 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
307
308
309 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
310 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
311 event_ctx->unexpected_event = 1;
312 goto out;
313 }
314
315 if (is_hdmi_dvi_sl_hdcp(hdcp))
316 if (!mod_hdcp_execute_and_set(check_ake_cert_available,
317 &input->ake_cert_available, &status,
318 hdcp, "ake_cert_available"))
319 goto out;
320 if (!mod_hdcp_execute_and_set(mod_hdcp_read_ake_cert,
321 &input->ake_cert_read, &status,
322 hdcp, "ake_cert_read"))
323 goto out;
324 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_ake_cert,
325 &input->ake_cert_validation, &status,
326 hdcp, "ake_cert_validation"))
327 goto out;
328out:
329 return status;
330}
331
332static enum mod_hdcp_status send_no_stored_km(struct mod_hdcp *hdcp,
333 struct mod_hdcp_event_context *event_ctx,
334 struct mod_hdcp_transition_input_hdcp2 *input)
335{
336 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
337
338 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
339 event_ctx->unexpected_event = 1;
340 goto out;
341 }
342
343 if (!mod_hdcp_execute_and_set(mod_hdcp_write_no_stored_km,
344 &input->no_stored_km_write, &status,
345 hdcp, "no_stored_km_write"))
346 goto out;
347out:
348 return status;
349}
350
351static enum mod_hdcp_status read_h_prime(struct mod_hdcp *hdcp,
352 struct mod_hdcp_event_context *event_ctx,
353 struct mod_hdcp_transition_input_hdcp2 *input)
354{
355 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
356
357 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
358 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
359 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
360 event_ctx->unexpected_event = 1;
361 goto out;
362 }
363
364 if (!mod_hdcp_execute_and_set(check_h_prime_available,
365 &input->h_prime_available, &status,
366 hdcp, "h_prime_available"))
367 goto out;
368
369 if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime,
370 &input->h_prime_read, &status,
371 hdcp, "h_prime_read"))
372 goto out;
373out:
374 return status;
375}
376
377static enum mod_hdcp_status read_pairing_info_and_validate_h_prime(
378 struct mod_hdcp *hdcp,
379 struct mod_hdcp_event_context *event_ctx,
380 struct mod_hdcp_transition_input_hdcp2 *input)
381{
382 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
383
384 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
385 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
386 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
387 event_ctx->unexpected_event = 1;
388 goto out;
389 }
390
391 if (!mod_hdcp_execute_and_set(check_pairing_info_available,
392 &input->pairing_available, &status,
393 hdcp, "pairing_available"))
394 goto out;
395 if (!mod_hdcp_execute_and_set(mod_hdcp_read_pairing_info,
396 &input->pairing_info_read, &status,
397 hdcp, "pairing_info_read"))
398 goto out;
399 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime,
400 &input->h_prime_validation, &status,
401 hdcp, "h_prime_validation"))
402 goto out;
403out:
404 return status;
405}
406
407static enum mod_hdcp_status send_stored_km(struct mod_hdcp *hdcp,
408 struct mod_hdcp_event_context *event_ctx,
409 struct mod_hdcp_transition_input_hdcp2 *input)
410{
411 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
412
413 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
414 event_ctx->unexpected_event = 1;
415 goto out;
416 }
417
418 if (!mod_hdcp_execute_and_set(mod_hdcp_write_stored_km,
419 &input->stored_km_write, &status,
420 hdcp, "stored_km_write"))
421 goto out;
422out:
423 return status;
424}
425
426static enum mod_hdcp_status validate_h_prime(struct mod_hdcp *hdcp,
427 struct mod_hdcp_event_context *event_ctx,
428 struct mod_hdcp_transition_input_hdcp2 *input)
429{
430 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
431
432 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
433 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
434 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
435 event_ctx->unexpected_event = 1;
436 goto out;
437 }
438
439 if (!mod_hdcp_execute_and_set(check_h_prime_available,
440 &input->h_prime_available, &status,
441 hdcp, "h_prime_available"))
442 goto out;
443 if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime,
444 &input->h_prime_read, &status,
445 hdcp, "h_prime_read"))
446 goto out;
447 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime,
448 &input->h_prime_validation, &status,
449 hdcp, "h_prime_validation"))
450 goto out;
451out:
452 return status;
453}
454
455static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp,
456 struct mod_hdcp_event_context *event_ctx,
457 struct mod_hdcp_transition_input_hdcp2 *input)
458{
459 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
460
461 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
462 event_ctx->unexpected_event = 1;
463 goto out;
464 }
465
466 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_lc_init,
467 &input->lc_init_prepare, &status,
468 hdcp, "lc_init_prepare"))
469 goto out;
470 if (!mod_hdcp_execute_and_set(mod_hdcp_write_lc_init,
471 &input->lc_init_write, &status,
472 hdcp, "lc_init_write"))
473 goto out;
474 if (is_dp_hdcp(hdcp))
475 msleep(16);
476 else
477 if (!mod_hdcp_execute_and_set(poll_l_prime_available,
478 &input->l_prime_available_poll, &status,
479 hdcp, "l_prime_available_poll"))
480 goto out;
481 if (!mod_hdcp_execute_and_set(mod_hdcp_read_l_prime,
482 &input->l_prime_read, &status,
483 hdcp, "l_prime_read"))
484 goto out;
485 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_l_prime,
486 &input->l_prime_validation, &status,
487 hdcp, "l_prime_validation"))
488 goto out;
489out:
490 return status;
491}
492
493static enum mod_hdcp_status exchange_ks_and_test_for_repeater(struct mod_hdcp *hdcp,
494 struct mod_hdcp_event_context *event_ctx,
495 struct mod_hdcp_transition_input_hdcp2 *input)
496{
497 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
498
499 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
500 event_ctx->unexpected_event = 1;
501 goto out;
502 }
503
504 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_eks,
505 &input->eks_prepare, &status,
506 hdcp, "eks_prepare"))
507 goto out;
508 if (!mod_hdcp_execute_and_set(mod_hdcp_write_eks,
509 &input->eks_write, &status,
510 hdcp, "eks_write"))
511 goto out;
512out:
513 return status;
514}
515
516static enum mod_hdcp_status enable_encryption(struct mod_hdcp *hdcp,
517 struct mod_hdcp_event_context *event_ctx,
518 struct mod_hdcp_transition_input_hdcp2 *input)
519{
520 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
521
522 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
523 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
524 event_ctx->unexpected_event = 1;
525 goto out;
526 }
527 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
528 process_rxstatus(hdcp, event_ctx, input, &status);
529 goto out;
530 }
531
532 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
533 if (!process_rxstatus(hdcp, event_ctx, input, &status))
534 goto out;
535 if (event_ctx->rx_id_list_ready)
536 goto out;
537 }
538 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_enable_encryption,
539 &input->enable_encryption, &status,
540 hdcp, "enable_encryption"))
541 goto out;
542 if (is_dp_mst_hdcp(hdcp)) {
543 if (!mod_hdcp_execute_and_set(
544 mod_hdcp_hdcp2_enable_dp_stream_encryption,
545 &input->stream_encryption_dp, &status,
546 hdcp, "stream_encryption_dp"))
547 goto out;
548 }
549out:
550 return status;
551}
552
553static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp,
554 struct mod_hdcp_event_context *event_ctx,
555 struct mod_hdcp_transition_input_hdcp2 *input)
556{
557 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
558
559 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
560 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
561 event_ctx->unexpected_event = 1;
562 goto out;
563 }
564
565 if (!process_rxstatus(hdcp, event_ctx, input, &status))
566 goto out;
567 if (event_ctx->rx_id_list_ready)
568 goto out;
569out:
570 return status;
571}
572
573static enum mod_hdcp_status wait_for_rx_id_list(struct mod_hdcp *hdcp,
574 struct mod_hdcp_event_context *event_ctx,
575 struct mod_hdcp_transition_input_hdcp2 *input)
576{
577 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
578
579 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
580 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
581 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
582 event_ctx->unexpected_event = 1;
583 goto out;
584 }
585
586 if (!process_rxstatus(hdcp, event_ctx, input, &status))
587 goto out;
588 if (!event_ctx->rx_id_list_ready) {
589 status = MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY;
590 goto out;
591 }
592out:
593 return status;
594}
595
596static enum mod_hdcp_status verify_rx_id_list_and_send_ack(struct mod_hdcp *hdcp,
597 struct mod_hdcp_event_context *event_ctx,
598 struct mod_hdcp_transition_input_hdcp2 *input)
599{
600 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
601
602 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
603 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
604 event_ctx->unexpected_event = 1;
605 goto out;
606 }
607 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
608 process_rxstatus(hdcp, event_ctx, input, &status);
609 goto out;
610 }
611
612 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rx_id_list,
613 &input->rx_id_list_read,
614 &status, hdcp, "receiver_id_list_read"))
615 goto out;
616 if (!mod_hdcp_execute_and_set(check_device_count,
617 &input->device_count_check,
618 &status, hdcp, "device_count_check"))
619 goto out;
620 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_rx_id_list,
621 &input->rx_id_list_validation,
622 &status, hdcp, "rx_id_list_validation"))
623 goto out;
624 if (!mod_hdcp_execute_and_set(mod_hdcp_write_repeater_auth_ack,
625 &input->repeater_auth_ack_write,
626 &status, hdcp, "repeater_auth_ack_write"))
627 goto out;
628out:
629 return status;
630}
631
632static enum mod_hdcp_status send_stream_management(struct mod_hdcp *hdcp,
633 struct mod_hdcp_event_context *event_ctx,
634 struct mod_hdcp_transition_input_hdcp2 *input)
635{
636 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
637
638 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
639 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
640 event_ctx->unexpected_event = 1;
641 goto out;
642 }
643 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
644 process_rxstatus(hdcp, event_ctx, input, &status);
645 goto out;
646 }
647
648 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
649 if (!process_rxstatus(hdcp, event_ctx, input, &status))
650 goto out;
651 if (event_ctx->rx_id_list_ready)
652 goto out;
653 }
654 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_stream_management,
655 &input->prepare_stream_manage,
656 &status, hdcp, "prepare_stream_manage"))
657 goto out;
658
659 if (!mod_hdcp_execute_and_set(mod_hdcp_write_stream_manage,
660 &input->stream_manage_write,
661 &status, hdcp, "stream_manage_write"))
662 goto out;
663out:
664 return status;
665}
666
667static enum mod_hdcp_status validate_stream_ready(struct mod_hdcp *hdcp,
668 struct mod_hdcp_event_context *event_ctx,
669 struct mod_hdcp_transition_input_hdcp2 *input)
670{
671 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
672
673 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
674 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
675 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
676 event_ctx->unexpected_event = 1;
677 goto out;
678 }
679 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
680 process_rxstatus(hdcp, event_ctx, input, &status);
681 goto out;
682 }
683
684 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
685 if (!process_rxstatus(hdcp, event_ctx, input, &status))
686 goto out;
687 if (event_ctx->rx_id_list_ready) {
688 goto out;
689 }
690 }
691 if (is_hdmi_dvi_sl_hdcp(hdcp))
692 if (!mod_hdcp_execute_and_set(check_stream_ready_available,
693 &input->stream_ready_available,
694 &status, hdcp, "stream_ready_available"))
695 goto out;
696 if (!mod_hdcp_execute_and_set(mod_hdcp_read_stream_ready,
697 &input->stream_ready_read,
698 &status, hdcp, "stream_ready_read"))
699 goto out;
700 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_stream_ready,
701 &input->stream_ready_validation,
702 &status, hdcp, "stream_ready_validation"))
703 goto out;
704
705out:
706 return status;
707}
708
709static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp,
710 struct mod_hdcp_event_context *event_ctx,
711 struct mod_hdcp_transition_input_hdcp2 *input)
712{
713 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
714
715 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
716 event_ctx->unexpected_event = 1;
717 goto out;
718 }
719
720 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxcaps,
721 &input->rx_caps_read_dp,
722 &status, hdcp, "rx_caps_read_dp"))
723 goto out;
724 if (!mod_hdcp_execute_and_set(check_hdcp2_capable,
725 &input->hdcp2_capable_check, &status,
726 hdcp, "hdcp2_capable_check"))
727 goto out;
728out:
729 return status;
730}
731
732static enum mod_hdcp_status send_content_stream_type_dp(struct mod_hdcp *hdcp,
733 struct mod_hdcp_event_context *event_ctx,
734 struct mod_hdcp_transition_input_hdcp2 *input)
735{
736 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
737
738 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
739 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
740 event_ctx->unexpected_event = 1;
741 goto out;
742 }
743
744 if (!process_rxstatus(hdcp, event_ctx, input, &status))
745 goto out;
746 if (!mod_hdcp_execute_and_set(mod_hdcp_write_content_type,
747 &input->content_stream_type_write, &status,
748 hdcp, "content_stream_type_write"))
749 goto out;
750out:
751 return status;
752}
753
754enum mod_hdcp_status mod_hdcp_hdcp2_execution(struct mod_hdcp *hdcp,
755 struct mod_hdcp_event_context *event_ctx,
756 struct mod_hdcp_transition_input_hdcp2 *input)
757{
758 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
759
760 switch (current_state(hdcp)) {
761 case H2_A0_KNOWN_HDCP2_CAPABLE_RX:
762 status = known_hdcp2_capable_rx(hdcp, event_ctx, input);
763 break;
764 case H2_A1_SEND_AKE_INIT:
765 status = send_ake_init(hdcp, event_ctx, input);
766 break;
767 case H2_A1_VALIDATE_AKE_CERT:
768 status = validate_ake_cert(hdcp, event_ctx, input);
769 break;
770 case H2_A1_SEND_NO_STORED_KM:
771 status = send_no_stored_km(hdcp, event_ctx, input);
772 break;
773 case H2_A1_READ_H_PRIME:
774 status = read_h_prime(hdcp, event_ctx, input);
775 break;
776 case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
777 status = read_pairing_info_and_validate_h_prime(hdcp,
778 event_ctx, input);
779 break;
780 case H2_A1_SEND_STORED_KM:
781 status = send_stored_km(hdcp, event_ctx, input);
782 break;
783 case H2_A1_VALIDATE_H_PRIME:
784 status = validate_h_prime(hdcp, event_ctx, input);
785 break;
786 case H2_A2_LOCALITY_CHECK:
787 status = locality_check(hdcp, event_ctx, input);
788 break;
789 case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
790 status = exchange_ks_and_test_for_repeater(hdcp, event_ctx, input);
791 break;
792 case H2_ENABLE_ENCRYPTION:
793 status = enable_encryption(hdcp, event_ctx, input);
794 break;
795 case H2_A5_AUTHENTICATED:
796 status = authenticated(hdcp, event_ctx, input);
797 break;
798 case H2_A6_WAIT_FOR_RX_ID_LIST:
799 status = wait_for_rx_id_list(hdcp, event_ctx, input);
800 break;
801 case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
802 status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input);
803 break;
804 case H2_A9_SEND_STREAM_MANAGEMENT:
805 status = send_stream_management(hdcp, event_ctx, input);
806 break;
807 case H2_A9_VALIDATE_STREAM_READY:
808 status = validate_stream_ready(hdcp, event_ctx, input);
809 break;
810 default:
811 status = MOD_HDCP_STATUS_INVALID_STATE;
812 break;
813 }
814
815 return status;
816}
817
818enum mod_hdcp_status mod_hdcp_hdcp2_dp_execution(struct mod_hdcp *hdcp,
819 struct mod_hdcp_event_context *event_ctx,
820 struct mod_hdcp_transition_input_hdcp2 *input)
821{
822 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
823
824 switch (current_state(hdcp)) {
825 case D2_A0_DETERMINE_RX_HDCP_CAPABLE:
826 status = determine_rx_hdcp_capable_dp(hdcp, event_ctx, input);
827 break;
828 case D2_A1_SEND_AKE_INIT:
829 status = send_ake_init(hdcp, event_ctx, input);
830 break;
831 case D2_A1_VALIDATE_AKE_CERT:
832 status = validate_ake_cert(hdcp, event_ctx, input);
833 break;
834 case D2_A1_SEND_NO_STORED_KM:
835 status = send_no_stored_km(hdcp, event_ctx, input);
836 break;
837 case D2_A1_READ_H_PRIME:
838 status = read_h_prime(hdcp, event_ctx, input);
839 break;
840 case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
841 status = read_pairing_info_and_validate_h_prime(hdcp,
842 event_ctx, input);
843 break;
844 case D2_A1_SEND_STORED_KM:
845 status = send_stored_km(hdcp, event_ctx, input);
846 break;
847 case D2_A1_VALIDATE_H_PRIME:
848 status = validate_h_prime(hdcp, event_ctx, input);
849 break;
850 case D2_A2_LOCALITY_CHECK:
851 status = locality_check(hdcp, event_ctx, input);
852 break;
853 case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
854 status = exchange_ks_and_test_for_repeater(hdcp,
855 event_ctx, input);
856 break;
857 case D2_SEND_CONTENT_STREAM_TYPE:
858 status = send_content_stream_type_dp(hdcp, event_ctx, input);
859 break;
860 case D2_ENABLE_ENCRYPTION:
861 status = enable_encryption(hdcp, event_ctx, input);
862 break;
863 case D2_A5_AUTHENTICATED:
864 status = authenticated(hdcp, event_ctx, input);
865 break;
866 case D2_A6_WAIT_FOR_RX_ID_LIST:
867 status = wait_for_rx_id_list(hdcp, event_ctx, input);
868 break;
869 case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
870 status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input);
871 break;
872 case D2_A9_SEND_STREAM_MANAGEMENT:
873 status = send_stream_management(hdcp, event_ctx, input);
874 break;
875 case D2_A9_VALIDATE_STREAM_READY:
876 status = validate_stream_ready(hdcp, event_ctx, input);
877 break;
878 default:
879 status = MOD_HDCP_STATUS_INVALID_STATE;
880 break;
881 }
882
883 return status;
884}
1/*
2 * Copyright 2018 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: AMD
23 *
24 */
25
26#include <linux/delay.h>
27
28#include "hdcp.h"
29
30static inline enum mod_hdcp_status check_receiver_id_list_ready(struct mod_hdcp *hdcp)
31{
32 uint8_t is_ready = 0;
33
34 if (is_dp_hdcp(hdcp))
35 is_ready = HDCP_2_2_DP_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus_dp) ? 1 : 0;
36 else
37 is_ready = (HDCP_2_2_HDMI_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus[1]) &&
38 (HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
39 hdcp->auth.msg.hdcp2.rxstatus[0])) ? 1 : 0;
40 return is_ready ? MOD_HDCP_STATUS_SUCCESS :
41 MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY;
42}
43
44static inline enum mod_hdcp_status check_hdcp2_capable(struct mod_hdcp *hdcp)
45{
46 enum mod_hdcp_status status;
47
48 if (is_dp_hdcp(hdcp))
49 status = (hdcp->auth.msg.hdcp2.rxcaps_dp[0] == HDCP_2_2_RX_CAPS_VERSION_VAL) &&
50 HDCP_2_2_DP_HDCP_CAPABLE(hdcp->auth.msg.hdcp2.rxcaps_dp[2]) ?
51 MOD_HDCP_STATUS_SUCCESS :
52 MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE;
53 else
54 status = (hdcp->auth.msg.hdcp2.hdcp2version_hdmi & HDCP_2_2_HDMI_SUPPORT_MASK) ?
55 MOD_HDCP_STATUS_SUCCESS :
56 MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE;
57 return status;
58}
59
60static inline enum mod_hdcp_status check_reauthentication_request(
61 struct mod_hdcp *hdcp)
62{
63 uint8_t ret = 0;
64
65 if (is_dp_hdcp(hdcp))
66 ret = HDCP_2_2_DP_RXSTATUS_REAUTH_REQ(hdcp->auth.msg.hdcp2.rxstatus_dp) ?
67 MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST :
68 MOD_HDCP_STATUS_SUCCESS;
69 else
70 ret = HDCP_2_2_HDMI_RXSTATUS_REAUTH_REQ(hdcp->auth.msg.hdcp2.rxstatus[1]) ?
71 MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST :
72 MOD_HDCP_STATUS_SUCCESS;
73 return ret;
74}
75
76static inline enum mod_hdcp_status check_link_integrity_failure_dp(
77 struct mod_hdcp *hdcp)
78{
79 return HDCP_2_2_DP_RXSTATUS_LINK_FAILED(hdcp->auth.msg.hdcp2.rxstatus_dp) ?
80 MOD_HDCP_STATUS_HDCP2_REAUTH_LINK_INTEGRITY_FAILURE :
81 MOD_HDCP_STATUS_SUCCESS;
82}
83
84static enum mod_hdcp_status check_ake_cert_available(struct mod_hdcp *hdcp)
85{
86 enum mod_hdcp_status status;
87 uint16_t size;
88
89 if (is_dp_hdcp(hdcp)) {
90 status = MOD_HDCP_STATUS_SUCCESS;
91 } else {
92 status = mod_hdcp_read_rxstatus(hdcp);
93 if (status == MOD_HDCP_STATUS_SUCCESS) {
94 size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
95 hdcp->auth.msg.hdcp2.rxstatus[0];
96 status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_cert)) ?
97 MOD_HDCP_STATUS_SUCCESS :
98 MOD_HDCP_STATUS_HDCP2_AKE_CERT_PENDING;
99 }
100 }
101 return status;
102}
103
104static enum mod_hdcp_status check_h_prime_available(struct mod_hdcp *hdcp)
105{
106 enum mod_hdcp_status status;
107 uint8_t size;
108
109 status = mod_hdcp_read_rxstatus(hdcp);
110 if (status != MOD_HDCP_STATUS_SUCCESS)
111 goto out;
112
113 if (is_dp_hdcp(hdcp)) {
114 status = HDCP_2_2_DP_RXSTATUS_H_PRIME(hdcp->auth.msg.hdcp2.rxstatus_dp) ?
115 MOD_HDCP_STATUS_SUCCESS :
116 MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING;
117 } else {
118 size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
119 hdcp->auth.msg.hdcp2.rxstatus[0];
120 status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_h_prime)) ?
121 MOD_HDCP_STATUS_SUCCESS :
122 MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING;
123 }
124out:
125 return status;
126}
127
128static enum mod_hdcp_status check_pairing_info_available(struct mod_hdcp *hdcp)
129{
130 enum mod_hdcp_status status;
131 uint8_t size;
132
133 status = mod_hdcp_read_rxstatus(hdcp);
134 if (status != MOD_HDCP_STATUS_SUCCESS)
135 goto out;
136
137 if (is_dp_hdcp(hdcp)) {
138 status = HDCP_2_2_DP_RXSTATUS_PAIRING(hdcp->auth.msg.hdcp2.rxstatus_dp) ?
139 MOD_HDCP_STATUS_SUCCESS :
140 MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING;
141 } else {
142 size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
143 hdcp->auth.msg.hdcp2.rxstatus[0];
144 status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_pairing_info)) ?
145 MOD_HDCP_STATUS_SUCCESS :
146 MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING;
147 }
148out:
149 return status;
150}
151
152static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp)
153{
154 enum mod_hdcp_status status;
155 uint8_t size;
156 uint16_t max_wait = 20; // units of ms
157 uint16_t num_polls = 5;
158 uint16_t wait_time = max_wait / num_polls;
159
160 if (is_dp_hdcp(hdcp))
161 status = MOD_HDCP_STATUS_INVALID_OPERATION;
162 else
163 for (; num_polls; num_polls--) {
164 msleep(wait_time);
165
166 status = mod_hdcp_read_rxstatus(hdcp);
167 if (status != MOD_HDCP_STATUS_SUCCESS)
168 break;
169
170 size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
171 hdcp->auth.msg.hdcp2.rxstatus[0];
172 status = (size == sizeof(hdcp->auth.msg.hdcp2.lc_l_prime)) ?
173 MOD_HDCP_STATUS_SUCCESS :
174 MOD_HDCP_STATUS_HDCP2_L_PRIME_PENDING;
175 if (status == MOD_HDCP_STATUS_SUCCESS)
176 break;
177 }
178 return status;
179}
180
181static enum mod_hdcp_status check_stream_ready_available(struct mod_hdcp *hdcp)
182{
183 enum mod_hdcp_status status;
184 uint8_t size;
185
186 if (is_dp_hdcp(hdcp)) {
187 status = MOD_HDCP_STATUS_INVALID_OPERATION;
188 } else {
189 status = mod_hdcp_read_rxstatus(hdcp);
190 if (status != MOD_HDCP_STATUS_SUCCESS)
191 goto out;
192 size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
193 hdcp->auth.msg.hdcp2.rxstatus[0];
194 status = (size == sizeof(hdcp->auth.msg.hdcp2.repeater_auth_stream_ready)) ?
195 MOD_HDCP_STATUS_SUCCESS :
196 MOD_HDCP_STATUS_HDCP2_STREAM_READY_PENDING;
197 }
198out:
199 return status;
200}
201
202static inline uint8_t get_device_count(struct mod_hdcp *hdcp)
203{
204 return HDCP_2_2_DEV_COUNT_LO(hdcp->auth.msg.hdcp2.rx_id_list[2]) +
205 (HDCP_2_2_DEV_COUNT_HI(hdcp->auth.msg.hdcp2.rx_id_list[1]) << 4);
206}
207
208static enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp)
209{
210 /* Avoid device count == 0 to do authentication */
211 if (0 == get_device_count(hdcp)) {
212 return MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE;
213 }
214
215 /* Some MST display may choose to report the internal panel as an HDCP RX. */
216 /* To update this condition with 1(because the immediate repeater's internal */
217 /* panel is possibly not included in DEVICE_COUNT) + get_device_count(hdcp). */
218 /* Device count must be greater than or equal to tracked hdcp displays. */
219 return ((1 + get_device_count(hdcp)) < get_active_display_count(hdcp)) ?
220 MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE :
221 MOD_HDCP_STATUS_SUCCESS;
222}
223
224static uint8_t process_rxstatus(struct mod_hdcp *hdcp,
225 struct mod_hdcp_event_context *event_ctx,
226 struct mod_hdcp_transition_input_hdcp2 *input,
227 enum mod_hdcp_status *status)
228{
229 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxstatus,
230 &input->rxstatus_read, status,
231 hdcp, "rxstatus_read"))
232 goto out;
233 if (!mod_hdcp_execute_and_set(check_reauthentication_request,
234 &input->reauth_request_check, status,
235 hdcp, "reauth_request_check"))
236 goto out;
237 if (is_dp_hdcp(hdcp)) {
238 if (!mod_hdcp_execute_and_set(check_link_integrity_failure_dp,
239 &input->link_integrity_check_dp, status,
240 hdcp, "link_integrity_check_dp"))
241 goto out;
242 }
243 if (hdcp->connection.is_repeater)
244 if (check_receiver_id_list_ready(hdcp) ==
245 MOD_HDCP_STATUS_SUCCESS) {
246 HDCP_INPUT_PASS_TRACE(hdcp, "rx_id_list_ready");
247 event_ctx->rx_id_list_ready = 1;
248 if (is_dp_hdcp(hdcp))
249 hdcp->auth.msg.hdcp2.rx_id_list_size =
250 sizeof(hdcp->auth.msg.hdcp2.rx_id_list);
251 else
252 hdcp->auth.msg.hdcp2.rx_id_list_size =
253 HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
254 hdcp->auth.msg.hdcp2.rxstatus[0];
255 }
256out:
257 return (*status == MOD_HDCP_STATUS_SUCCESS);
258}
259
260static enum mod_hdcp_status known_hdcp2_capable_rx(struct mod_hdcp *hdcp,
261 struct mod_hdcp_event_context *event_ctx,
262 struct mod_hdcp_transition_input_hdcp2 *input)
263{
264 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
265
266 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
267 event_ctx->unexpected_event = 1;
268 goto out;
269 }
270
271 if (!mod_hdcp_execute_and_set(mod_hdcp_read_hdcp2version,
272 &input->hdcp2version_read, &status,
273 hdcp, "hdcp2version_read"))
274 goto out;
275 if (!mod_hdcp_execute_and_set(check_hdcp2_capable,
276 &input->hdcp2_capable_check, &status,
277 hdcp, "hdcp2_capable"))
278 goto out;
279out:
280 return status;
281}
282
283static enum mod_hdcp_status send_ake_init(struct mod_hdcp *hdcp,
284 struct mod_hdcp_event_context *event_ctx,
285 struct mod_hdcp_transition_input_hdcp2 *input)
286{
287 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
288
289 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
290 event_ctx->unexpected_event = 1;
291 goto out;
292 }
293
294 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_create_session,
295 &input->create_session, &status,
296 hdcp, "create_session"))
297 goto out;
298 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_ake_init,
299 &input->ake_init_prepare, &status,
300 hdcp, "ake_init_prepare"))
301 goto out;
302 if (!mod_hdcp_execute_and_set(mod_hdcp_write_ake_init,
303 &input->ake_init_write, &status,
304 hdcp, "ake_init_write"))
305 goto out;
306out:
307 return status;
308}
309
310static enum mod_hdcp_status validate_ake_cert(struct mod_hdcp *hdcp,
311 struct mod_hdcp_event_context *event_ctx,
312 struct mod_hdcp_transition_input_hdcp2 *input)
313{
314 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
315
316
317 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
318 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
319 event_ctx->unexpected_event = 1;
320 goto out;
321 }
322
323 if (is_hdmi_dvi_sl_hdcp(hdcp))
324 if (!mod_hdcp_execute_and_set(check_ake_cert_available,
325 &input->ake_cert_available, &status,
326 hdcp, "ake_cert_available"))
327 goto out;
328 if (!mod_hdcp_execute_and_set(mod_hdcp_read_ake_cert,
329 &input->ake_cert_read, &status,
330 hdcp, "ake_cert_read"))
331 goto out;
332 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_ake_cert,
333 &input->ake_cert_validation, &status,
334 hdcp, "ake_cert_validation"))
335 goto out;
336out:
337 return status;
338}
339
340static enum mod_hdcp_status send_no_stored_km(struct mod_hdcp *hdcp,
341 struct mod_hdcp_event_context *event_ctx,
342 struct mod_hdcp_transition_input_hdcp2 *input)
343{
344 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
345
346 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
347 event_ctx->unexpected_event = 1;
348 goto out;
349 }
350
351 if (!mod_hdcp_execute_and_set(mod_hdcp_write_no_stored_km,
352 &input->no_stored_km_write, &status,
353 hdcp, "no_stored_km_write"))
354 goto out;
355out:
356 return status;
357}
358
359static enum mod_hdcp_status read_h_prime(struct mod_hdcp *hdcp,
360 struct mod_hdcp_event_context *event_ctx,
361 struct mod_hdcp_transition_input_hdcp2 *input)
362{
363 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
364
365 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
366 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
367 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
368 event_ctx->unexpected_event = 1;
369 goto out;
370 }
371
372 if (!mod_hdcp_execute_and_set(check_h_prime_available,
373 &input->h_prime_available, &status,
374 hdcp, "h_prime_available"))
375 goto out;
376
377 if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime,
378 &input->h_prime_read, &status,
379 hdcp, "h_prime_read"))
380 goto out;
381out:
382 return status;
383}
384
385static enum mod_hdcp_status read_pairing_info_and_validate_h_prime(
386 struct mod_hdcp *hdcp,
387 struct mod_hdcp_event_context *event_ctx,
388 struct mod_hdcp_transition_input_hdcp2 *input)
389{
390 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
391
392 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
393 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
394 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
395 event_ctx->unexpected_event = 1;
396 goto out;
397 }
398
399 if (!mod_hdcp_execute_and_set(check_pairing_info_available,
400 &input->pairing_available, &status,
401 hdcp, "pairing_available"))
402 goto out;
403 if (!mod_hdcp_execute_and_set(mod_hdcp_read_pairing_info,
404 &input->pairing_info_read, &status,
405 hdcp, "pairing_info_read"))
406 goto out;
407 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime,
408 &input->h_prime_validation, &status,
409 hdcp, "h_prime_validation"))
410 goto out;
411out:
412 return status;
413}
414
415static enum mod_hdcp_status send_stored_km(struct mod_hdcp *hdcp,
416 struct mod_hdcp_event_context *event_ctx,
417 struct mod_hdcp_transition_input_hdcp2 *input)
418{
419 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
420
421 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
422 event_ctx->unexpected_event = 1;
423 goto out;
424 }
425
426 if (!mod_hdcp_execute_and_set(mod_hdcp_write_stored_km,
427 &input->stored_km_write, &status,
428 hdcp, "stored_km_write"))
429 goto out;
430out:
431 return status;
432}
433
434static enum mod_hdcp_status validate_h_prime(struct mod_hdcp *hdcp,
435 struct mod_hdcp_event_context *event_ctx,
436 struct mod_hdcp_transition_input_hdcp2 *input)
437{
438 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
439
440 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
441 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
442 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
443 event_ctx->unexpected_event = 1;
444 goto out;
445 }
446
447 if (!mod_hdcp_execute_and_set(check_h_prime_available,
448 &input->h_prime_available, &status,
449 hdcp, "h_prime_available"))
450 goto out;
451 if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime,
452 &input->h_prime_read, &status,
453 hdcp, "h_prime_read"))
454 goto out;
455 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime,
456 &input->h_prime_validation, &status,
457 hdcp, "h_prime_validation"))
458 goto out;
459out:
460 return status;
461}
462
463static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp,
464 struct mod_hdcp_event_context *event_ctx,
465 struct mod_hdcp_transition_input_hdcp2 *input)
466{
467 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
468
469 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
470 event_ctx->unexpected_event = 1;
471 goto out;
472 }
473
474 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_lc_init,
475 &input->lc_init_prepare, &status,
476 hdcp, "lc_init_prepare"))
477 goto out;
478 if (!mod_hdcp_execute_and_set(mod_hdcp_write_lc_init,
479 &input->lc_init_write, &status,
480 hdcp, "lc_init_write"))
481 goto out;
482 if (is_dp_hdcp(hdcp))
483 msleep(16);
484 else
485 if (!mod_hdcp_execute_and_set(poll_l_prime_available,
486 &input->l_prime_available_poll, &status,
487 hdcp, "l_prime_available_poll"))
488 goto out;
489 if (!mod_hdcp_execute_and_set(mod_hdcp_read_l_prime,
490 &input->l_prime_read, &status,
491 hdcp, "l_prime_read"))
492 goto out;
493 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_l_prime,
494 &input->l_prime_validation, &status,
495 hdcp, "l_prime_validation"))
496 goto out;
497out:
498 return status;
499}
500
501static enum mod_hdcp_status exchange_ks_and_test_for_repeater(struct mod_hdcp *hdcp,
502 struct mod_hdcp_event_context *event_ctx,
503 struct mod_hdcp_transition_input_hdcp2 *input)
504{
505 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
506
507 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
508 event_ctx->unexpected_event = 1;
509 goto out;
510 }
511
512 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_eks,
513 &input->eks_prepare, &status,
514 hdcp, "eks_prepare"))
515 goto out;
516 if (!mod_hdcp_execute_and_set(mod_hdcp_write_eks,
517 &input->eks_write, &status,
518 hdcp, "eks_write"))
519 goto out;
520out:
521 return status;
522}
523
524static enum mod_hdcp_status enable_encryption(struct mod_hdcp *hdcp,
525 struct mod_hdcp_event_context *event_ctx,
526 struct mod_hdcp_transition_input_hdcp2 *input)
527{
528 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
529
530 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
531 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
532 event_ctx->unexpected_event = 1;
533 goto out;
534 }
535 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
536 process_rxstatus(hdcp, event_ctx, input, &status);
537 goto out;
538 }
539
540 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
541 if (!process_rxstatus(hdcp, event_ctx, input, &status))
542 goto out;
543 if (event_ctx->rx_id_list_ready)
544 goto out;
545 }
546 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_enable_encryption,
547 &input->enable_encryption, &status,
548 hdcp, "enable_encryption"))
549 goto out;
550 if (is_dp_mst_hdcp(hdcp)) {
551 if (!mod_hdcp_execute_and_set(
552 mod_hdcp_hdcp2_enable_dp_stream_encryption,
553 &input->stream_encryption_dp, &status,
554 hdcp, "stream_encryption_dp"))
555 goto out;
556 }
557out:
558 return status;
559}
560
561static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp,
562 struct mod_hdcp_event_context *event_ctx,
563 struct mod_hdcp_transition_input_hdcp2 *input)
564{
565 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
566
567 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
568 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
569 event_ctx->unexpected_event = 1;
570 goto out;
571 }
572
573 process_rxstatus(hdcp, event_ctx, input, &status);
574out:
575 return status;
576}
577
578static enum mod_hdcp_status wait_for_rx_id_list(struct mod_hdcp *hdcp,
579 struct mod_hdcp_event_context *event_ctx,
580 struct mod_hdcp_transition_input_hdcp2 *input)
581{
582 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
583
584 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
585 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
586 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
587 event_ctx->unexpected_event = 1;
588 goto out;
589 }
590
591 if (!process_rxstatus(hdcp, event_ctx, input, &status))
592 goto out;
593 if (!event_ctx->rx_id_list_ready) {
594 status = MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY;
595 goto out;
596 }
597out:
598 return status;
599}
600
601static enum mod_hdcp_status verify_rx_id_list_and_send_ack(struct mod_hdcp *hdcp,
602 struct mod_hdcp_event_context *event_ctx,
603 struct mod_hdcp_transition_input_hdcp2 *input)
604{
605 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
606
607 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
608 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
609 event_ctx->unexpected_event = 1;
610 goto out;
611 }
612 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
613 process_rxstatus(hdcp, event_ctx, input, &status);
614 goto out;
615 }
616
617 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rx_id_list,
618 &input->rx_id_list_read,
619 &status, hdcp, "receiver_id_list_read"))
620 goto out;
621 if (!mod_hdcp_execute_and_set(check_device_count,
622 &input->device_count_check,
623 &status, hdcp, "device_count_check"))
624 goto out;
625 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_rx_id_list,
626 &input->rx_id_list_validation,
627 &status, hdcp, "rx_id_list_validation"))
628 goto out;
629 if (!mod_hdcp_execute_and_set(mod_hdcp_write_repeater_auth_ack,
630 &input->repeater_auth_ack_write,
631 &status, hdcp, "repeater_auth_ack_write"))
632 goto out;
633out:
634 return status;
635}
636
637static enum mod_hdcp_status send_stream_management(struct mod_hdcp *hdcp,
638 struct mod_hdcp_event_context *event_ctx,
639 struct mod_hdcp_transition_input_hdcp2 *input)
640{
641 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
642
643 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
644 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
645 event_ctx->unexpected_event = 1;
646 goto out;
647 }
648 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
649 process_rxstatus(hdcp, event_ctx, input, &status);
650 goto out;
651 }
652
653 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
654 if (!process_rxstatus(hdcp, event_ctx, input, &status))
655 goto out;
656 if (event_ctx->rx_id_list_ready)
657 goto out;
658 }
659 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_stream_management,
660 &input->prepare_stream_manage,
661 &status, hdcp, "prepare_stream_manage"))
662 goto out;
663
664 if (!mod_hdcp_execute_and_set(mod_hdcp_write_stream_manage,
665 &input->stream_manage_write,
666 &status, hdcp, "stream_manage_write"))
667 goto out;
668out:
669 return status;
670}
671
672static enum mod_hdcp_status validate_stream_ready(struct mod_hdcp *hdcp,
673 struct mod_hdcp_event_context *event_ctx,
674 struct mod_hdcp_transition_input_hdcp2 *input)
675{
676 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
677
678 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
679 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
680 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
681 event_ctx->unexpected_event = 1;
682 goto out;
683 }
684 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
685 process_rxstatus(hdcp, event_ctx, input, &status);
686 goto out;
687 }
688
689 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
690 if (!process_rxstatus(hdcp, event_ctx, input, &status))
691 goto out;
692 if (event_ctx->rx_id_list_ready) {
693 goto out;
694 }
695 }
696 if (is_hdmi_dvi_sl_hdcp(hdcp))
697 if (!mod_hdcp_execute_and_set(check_stream_ready_available,
698 &input->stream_ready_available,
699 &status, hdcp, "stream_ready_available"))
700 goto out;
701 if (!mod_hdcp_execute_and_set(mod_hdcp_read_stream_ready,
702 &input->stream_ready_read,
703 &status, hdcp, "stream_ready_read"))
704 goto out;
705 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_stream_ready,
706 &input->stream_ready_validation,
707 &status, hdcp, "stream_ready_validation"))
708 goto out;
709
710out:
711 return status;
712}
713
714static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp,
715 struct mod_hdcp_event_context *event_ctx,
716 struct mod_hdcp_transition_input_hdcp2 *input)
717{
718 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
719
720 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
721 event_ctx->unexpected_event = 1;
722 goto out;
723 }
724
725 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxcaps,
726 &input->rx_caps_read_dp,
727 &status, hdcp, "rx_caps_read_dp"))
728 goto out;
729 if (!mod_hdcp_execute_and_set(check_hdcp2_capable,
730 &input->hdcp2_capable_check, &status,
731 hdcp, "hdcp2_capable_check"))
732 goto out;
733out:
734 return status;
735}
736
737static enum mod_hdcp_status send_content_stream_type_dp(struct mod_hdcp *hdcp,
738 struct mod_hdcp_event_context *event_ctx,
739 struct mod_hdcp_transition_input_hdcp2 *input)
740{
741 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
742
743 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
744 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
745 event_ctx->unexpected_event = 1;
746 goto out;
747 }
748
749 if (!process_rxstatus(hdcp, event_ctx, input, &status))
750 goto out;
751 if (!mod_hdcp_execute_and_set(mod_hdcp_write_content_type,
752 &input->content_stream_type_write, &status,
753 hdcp, "content_stream_type_write"))
754 goto out;
755out:
756 return status;
757}
758
759enum mod_hdcp_status mod_hdcp_hdcp2_execution(struct mod_hdcp *hdcp,
760 struct mod_hdcp_event_context *event_ctx,
761 struct mod_hdcp_transition_input_hdcp2 *input)
762{
763 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
764
765 switch (current_state(hdcp)) {
766 case H2_A0_KNOWN_HDCP2_CAPABLE_RX:
767 status = known_hdcp2_capable_rx(hdcp, event_ctx, input);
768 break;
769 case H2_A1_SEND_AKE_INIT:
770 status = send_ake_init(hdcp, event_ctx, input);
771 break;
772 case H2_A1_VALIDATE_AKE_CERT:
773 status = validate_ake_cert(hdcp, event_ctx, input);
774 break;
775 case H2_A1_SEND_NO_STORED_KM:
776 status = send_no_stored_km(hdcp, event_ctx, input);
777 break;
778 case H2_A1_READ_H_PRIME:
779 status = read_h_prime(hdcp, event_ctx, input);
780 break;
781 case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
782 status = read_pairing_info_and_validate_h_prime(hdcp,
783 event_ctx, input);
784 break;
785 case H2_A1_SEND_STORED_KM:
786 status = send_stored_km(hdcp, event_ctx, input);
787 break;
788 case H2_A1_VALIDATE_H_PRIME:
789 status = validate_h_prime(hdcp, event_ctx, input);
790 break;
791 case H2_A2_LOCALITY_CHECK:
792 status = locality_check(hdcp, event_ctx, input);
793 break;
794 case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
795 status = exchange_ks_and_test_for_repeater(hdcp, event_ctx, input);
796 break;
797 case H2_ENABLE_ENCRYPTION:
798 status = enable_encryption(hdcp, event_ctx, input);
799 break;
800 case H2_A5_AUTHENTICATED:
801 status = authenticated(hdcp, event_ctx, input);
802 break;
803 case H2_A6_WAIT_FOR_RX_ID_LIST:
804 status = wait_for_rx_id_list(hdcp, event_ctx, input);
805 break;
806 case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
807 status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input);
808 break;
809 case H2_A9_SEND_STREAM_MANAGEMENT:
810 status = send_stream_management(hdcp, event_ctx, input);
811 break;
812 case H2_A9_VALIDATE_STREAM_READY:
813 status = validate_stream_ready(hdcp, event_ctx, input);
814 break;
815 default:
816 status = MOD_HDCP_STATUS_INVALID_STATE;
817 break;
818 }
819
820 return status;
821}
822
823enum mod_hdcp_status mod_hdcp_hdcp2_dp_execution(struct mod_hdcp *hdcp,
824 struct mod_hdcp_event_context *event_ctx,
825 struct mod_hdcp_transition_input_hdcp2 *input)
826{
827 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
828
829 switch (current_state(hdcp)) {
830 case D2_A0_DETERMINE_RX_HDCP_CAPABLE:
831 status = determine_rx_hdcp_capable_dp(hdcp, event_ctx, input);
832 break;
833 case D2_A1_SEND_AKE_INIT:
834 status = send_ake_init(hdcp, event_ctx, input);
835 break;
836 case D2_A1_VALIDATE_AKE_CERT:
837 status = validate_ake_cert(hdcp, event_ctx, input);
838 break;
839 case D2_A1_SEND_NO_STORED_KM:
840 status = send_no_stored_km(hdcp, event_ctx, input);
841 break;
842 case D2_A1_READ_H_PRIME:
843 status = read_h_prime(hdcp, event_ctx, input);
844 break;
845 case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
846 status = read_pairing_info_and_validate_h_prime(hdcp,
847 event_ctx, input);
848 break;
849 case D2_A1_SEND_STORED_KM:
850 status = send_stored_km(hdcp, event_ctx, input);
851 break;
852 case D2_A1_VALIDATE_H_PRIME:
853 status = validate_h_prime(hdcp, event_ctx, input);
854 break;
855 case D2_A2_LOCALITY_CHECK:
856 status = locality_check(hdcp, event_ctx, input);
857 break;
858 case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
859 status = exchange_ks_and_test_for_repeater(hdcp,
860 event_ctx, input);
861 break;
862 case D2_SEND_CONTENT_STREAM_TYPE:
863 status = send_content_stream_type_dp(hdcp, event_ctx, input);
864 break;
865 case D2_ENABLE_ENCRYPTION:
866 status = enable_encryption(hdcp, event_ctx, input);
867 break;
868 case D2_A5_AUTHENTICATED:
869 status = authenticated(hdcp, event_ctx, input);
870 break;
871 case D2_A6_WAIT_FOR_RX_ID_LIST:
872 status = wait_for_rx_id_list(hdcp, event_ctx, input);
873 break;
874 case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
875 status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input);
876 break;
877 case D2_A9_SEND_STREAM_MANAGEMENT:
878 status = send_stream_management(hdcp, event_ctx, input);
879 break;
880 case D2_A9_VALIDATE_STREAM_READY:
881 status = validate_stream_ready(hdcp, event_ctx, input);
882 break;
883 default:
884 status = MOD_HDCP_STATUS_INVALID_STATE;
885 break;
886 }
887
888 return status;
889}