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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 /* Avoid device count == 0 to do authentication */
211 if (get_device_count(hdcp) == 0)
212 return MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE;
213
214 /* Some MST display may choose to report the internal panel as an HDCP RX. */
215 /* To update this condition with 1(because the immediate repeater's internal */
216 /* panel is possibly not included in DEVICE_COUNT) + get_device_count(hdcp). */
217 /* Device count must be greater than or equal to tracked hdcp displays. */
218 return ((1 + get_device_count(hdcp)) < get_active_display_count(hdcp)) ?
219 MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE :
220 MOD_HDCP_STATUS_SUCCESS;
221}
222
223static uint8_t process_rxstatus(struct mod_hdcp *hdcp,
224 struct mod_hdcp_event_context *event_ctx,
225 struct mod_hdcp_transition_input_hdcp2 *input,
226 enum mod_hdcp_status *status)
227{
228 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxstatus,
229 &input->rxstatus_read, status,
230 hdcp, "rxstatus_read"))
231 goto out;
232 if (!mod_hdcp_execute_and_set(check_reauthentication_request,
233 &input->reauth_request_check, status,
234 hdcp, "reauth_request_check"))
235 goto out;
236 if (is_dp_hdcp(hdcp)) {
237 if (!mod_hdcp_execute_and_set(check_link_integrity_failure_dp,
238 &input->link_integrity_check_dp, status,
239 hdcp, "link_integrity_check_dp"))
240 goto out;
241 }
242 if (hdcp->connection.is_repeater)
243 if (check_receiver_id_list_ready(hdcp) ==
244 MOD_HDCP_STATUS_SUCCESS) {
245 HDCP_INPUT_PASS_TRACE(hdcp, "rx_id_list_ready");
246 event_ctx->rx_id_list_ready = 1;
247 if (is_dp_hdcp(hdcp))
248 hdcp->auth.msg.hdcp2.rx_id_list_size =
249 sizeof(hdcp->auth.msg.hdcp2.rx_id_list);
250 else
251 hdcp->auth.msg.hdcp2.rx_id_list_size =
252 HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
253 hdcp->auth.msg.hdcp2.rxstatus[0];
254 }
255out:
256 return (*status == MOD_HDCP_STATUS_SUCCESS);
257}
258
259static enum mod_hdcp_status known_hdcp2_capable_rx(struct mod_hdcp *hdcp,
260 struct mod_hdcp_event_context *event_ctx,
261 struct mod_hdcp_transition_input_hdcp2 *input)
262{
263 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
264
265 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
266 event_ctx->unexpected_event = 1;
267 goto out;
268 }
269
270 if (!mod_hdcp_execute_and_set(mod_hdcp_read_hdcp2version,
271 &input->hdcp2version_read, &status,
272 hdcp, "hdcp2version_read"))
273 goto out;
274 if (!mod_hdcp_execute_and_set(check_hdcp2_capable,
275 &input->hdcp2_capable_check, &status,
276 hdcp, "hdcp2_capable"))
277 goto out;
278out:
279 return status;
280}
281
282static enum mod_hdcp_status send_ake_init(struct mod_hdcp *hdcp,
283 struct mod_hdcp_event_context *event_ctx,
284 struct mod_hdcp_transition_input_hdcp2 *input)
285{
286 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
287
288 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
289 event_ctx->unexpected_event = 1;
290 goto out;
291 }
292
293 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_create_session,
294 &input->create_session, &status,
295 hdcp, "create_session"))
296 goto out;
297 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_ake_init,
298 &input->ake_init_prepare, &status,
299 hdcp, "ake_init_prepare"))
300 goto out;
301 if (!mod_hdcp_execute_and_set(mod_hdcp_write_ake_init,
302 &input->ake_init_write, &status,
303 hdcp, "ake_init_write"))
304 goto out;
305out:
306 return status;
307}
308
309static enum mod_hdcp_status validate_ake_cert(struct mod_hdcp *hdcp,
310 struct mod_hdcp_event_context *event_ctx,
311 struct mod_hdcp_transition_input_hdcp2 *input)
312{
313 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
314
315
316 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
317 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
318 event_ctx->unexpected_event = 1;
319 goto out;
320 }
321
322 if (is_hdmi_dvi_sl_hdcp(hdcp))
323 if (!mod_hdcp_execute_and_set(check_ake_cert_available,
324 &input->ake_cert_available, &status,
325 hdcp, "ake_cert_available"))
326 goto out;
327 if (!mod_hdcp_execute_and_set(mod_hdcp_read_ake_cert,
328 &input->ake_cert_read, &status,
329 hdcp, "ake_cert_read"))
330 goto out;
331 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_ake_cert,
332 &input->ake_cert_validation, &status,
333 hdcp, "ake_cert_validation"))
334 goto out;
335out:
336 return status;
337}
338
339static enum mod_hdcp_status send_no_stored_km(struct mod_hdcp *hdcp,
340 struct mod_hdcp_event_context *event_ctx,
341 struct mod_hdcp_transition_input_hdcp2 *input)
342{
343 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
344
345 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
346 event_ctx->unexpected_event = 1;
347 goto out;
348 }
349
350 if (!mod_hdcp_execute_and_set(mod_hdcp_write_no_stored_km,
351 &input->no_stored_km_write, &status,
352 hdcp, "no_stored_km_write"))
353 goto out;
354out:
355 return status;
356}
357
358static enum mod_hdcp_status read_h_prime(struct mod_hdcp *hdcp,
359 struct mod_hdcp_event_context *event_ctx,
360 struct mod_hdcp_transition_input_hdcp2 *input)
361{
362 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
363
364 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
365 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
366 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
367 event_ctx->unexpected_event = 1;
368 goto out;
369 }
370
371 if (!mod_hdcp_execute_and_set(check_h_prime_available,
372 &input->h_prime_available, &status,
373 hdcp, "h_prime_available"))
374 goto out;
375
376 if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime,
377 &input->h_prime_read, &status,
378 hdcp, "h_prime_read"))
379 goto out;
380out:
381 return status;
382}
383
384static enum mod_hdcp_status read_pairing_info_and_validate_h_prime(
385 struct mod_hdcp *hdcp,
386 struct mod_hdcp_event_context *event_ctx,
387 struct mod_hdcp_transition_input_hdcp2 *input)
388{
389 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
390
391 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
392 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
393 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
394 event_ctx->unexpected_event = 1;
395 goto out;
396 }
397
398 if (!mod_hdcp_execute_and_set(check_pairing_info_available,
399 &input->pairing_available, &status,
400 hdcp, "pairing_available"))
401 goto out;
402 if (!mod_hdcp_execute_and_set(mod_hdcp_read_pairing_info,
403 &input->pairing_info_read, &status,
404 hdcp, "pairing_info_read"))
405 goto out;
406 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime,
407 &input->h_prime_validation, &status,
408 hdcp, "h_prime_validation"))
409 goto out;
410out:
411 return status;
412}
413
414static enum mod_hdcp_status send_stored_km(struct mod_hdcp *hdcp,
415 struct mod_hdcp_event_context *event_ctx,
416 struct mod_hdcp_transition_input_hdcp2 *input)
417{
418 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
419
420 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
421 event_ctx->unexpected_event = 1;
422 goto out;
423 }
424
425 if (!mod_hdcp_execute_and_set(mod_hdcp_write_stored_km,
426 &input->stored_km_write, &status,
427 hdcp, "stored_km_write"))
428 goto out;
429out:
430 return status;
431}
432
433static enum mod_hdcp_status validate_h_prime(struct mod_hdcp *hdcp,
434 struct mod_hdcp_event_context *event_ctx,
435 struct mod_hdcp_transition_input_hdcp2 *input)
436{
437 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
438
439 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
440 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
441 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
442 event_ctx->unexpected_event = 1;
443 goto out;
444 }
445
446 if (!mod_hdcp_execute_and_set(check_h_prime_available,
447 &input->h_prime_available, &status,
448 hdcp, "h_prime_available"))
449 goto out;
450 if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime,
451 &input->h_prime_read, &status,
452 hdcp, "h_prime_read"))
453 goto out;
454 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime,
455 &input->h_prime_validation, &status,
456 hdcp, "h_prime_validation"))
457 goto out;
458out:
459 return status;
460}
461
462static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp,
463 struct mod_hdcp_event_context *event_ctx,
464 struct mod_hdcp_transition_input_hdcp2 *input)
465{
466 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
467
468 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
469 event_ctx->unexpected_event = 1;
470 goto out;
471 }
472
473 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_lc_init,
474 &input->lc_init_prepare, &status,
475 hdcp, "lc_init_prepare"))
476 goto out;
477 if (!mod_hdcp_execute_and_set(mod_hdcp_write_lc_init,
478 &input->lc_init_write, &status,
479 hdcp, "lc_init_write"))
480 goto out;
481 if (is_dp_hdcp(hdcp))
482 msleep(16);
483 else
484 if (!mod_hdcp_execute_and_set(poll_l_prime_available,
485 &input->l_prime_available_poll, &status,
486 hdcp, "l_prime_available_poll"))
487 goto out;
488 if (!mod_hdcp_execute_and_set(mod_hdcp_read_l_prime,
489 &input->l_prime_read, &status,
490 hdcp, "l_prime_read"))
491 goto out;
492 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_l_prime,
493 &input->l_prime_validation, &status,
494 hdcp, "l_prime_validation"))
495 goto out;
496out:
497 return status;
498}
499
500static enum mod_hdcp_status exchange_ks_and_test_for_repeater(struct mod_hdcp *hdcp,
501 struct mod_hdcp_event_context *event_ctx,
502 struct mod_hdcp_transition_input_hdcp2 *input)
503{
504 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
505
506 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
507 event_ctx->unexpected_event = 1;
508 goto out;
509 }
510
511 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_eks,
512 &input->eks_prepare, &status,
513 hdcp, "eks_prepare"))
514 goto out;
515 if (!mod_hdcp_execute_and_set(mod_hdcp_write_eks,
516 &input->eks_write, &status,
517 hdcp, "eks_write"))
518 goto out;
519out:
520 return status;
521}
522
523static enum mod_hdcp_status enable_encryption(struct mod_hdcp *hdcp,
524 struct mod_hdcp_event_context *event_ctx,
525 struct mod_hdcp_transition_input_hdcp2 *input)
526{
527 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
528
529 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
530 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
531 event_ctx->unexpected_event = 1;
532 goto out;
533 }
534 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
535 process_rxstatus(hdcp, event_ctx, input, &status);
536 goto out;
537 }
538
539 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
540 if (!process_rxstatus(hdcp, event_ctx, input, &status))
541 goto out;
542 if (event_ctx->rx_id_list_ready)
543 goto out;
544 }
545 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_enable_encryption,
546 &input->enable_encryption, &status,
547 hdcp, "enable_encryption"))
548 goto out;
549 if (is_dp_mst_hdcp(hdcp)) {
550 if (!mod_hdcp_execute_and_set(
551 mod_hdcp_hdcp2_enable_dp_stream_encryption,
552 &input->stream_encryption_dp, &status,
553 hdcp, "stream_encryption_dp"))
554 goto out;
555 }
556out:
557 return status;
558}
559
560static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp,
561 struct mod_hdcp_event_context *event_ctx,
562 struct mod_hdcp_transition_input_hdcp2 *input)
563{
564 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
565
566 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
567 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
568 event_ctx->unexpected_event = 1;
569 goto out;
570 }
571
572 process_rxstatus(hdcp, event_ctx, input, &status);
573out:
574 return status;
575}
576
577static enum mod_hdcp_status wait_for_rx_id_list(struct mod_hdcp *hdcp,
578 struct mod_hdcp_event_context *event_ctx,
579 struct mod_hdcp_transition_input_hdcp2 *input)
580{
581 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
582
583 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
584 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
585 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
586 event_ctx->unexpected_event = 1;
587 goto out;
588 }
589
590 if (!process_rxstatus(hdcp, event_ctx, input, &status))
591 goto out;
592 if (!event_ctx->rx_id_list_ready) {
593 status = MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY;
594 goto out;
595 }
596out:
597 return status;
598}
599
600static enum mod_hdcp_status verify_rx_id_list_and_send_ack(struct mod_hdcp *hdcp,
601 struct mod_hdcp_event_context *event_ctx,
602 struct mod_hdcp_transition_input_hdcp2 *input)
603{
604 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
605
606 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
607 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
608 event_ctx->unexpected_event = 1;
609 goto out;
610 }
611 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
612 process_rxstatus(hdcp, event_ctx, input, &status);
613 goto out;
614 }
615
616 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rx_id_list,
617 &input->rx_id_list_read,
618 &status, hdcp, "receiver_id_list_read"))
619 goto out;
620 if (!mod_hdcp_execute_and_set(check_device_count,
621 &input->device_count_check,
622 &status, hdcp, "device_count_check"))
623 goto out;
624 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_rx_id_list,
625 &input->rx_id_list_validation,
626 &status, hdcp, "rx_id_list_validation"))
627 goto out;
628 if (!mod_hdcp_execute_and_set(mod_hdcp_write_repeater_auth_ack,
629 &input->repeater_auth_ack_write,
630 &status, hdcp, "repeater_auth_ack_write"))
631 goto out;
632out:
633 return status;
634}
635
636static enum mod_hdcp_status send_stream_management(struct mod_hdcp *hdcp,
637 struct mod_hdcp_event_context *event_ctx,
638 struct mod_hdcp_transition_input_hdcp2 *input)
639{
640 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
641
642 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
643 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
644 event_ctx->unexpected_event = 1;
645 goto out;
646 }
647 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
648 process_rxstatus(hdcp, event_ctx, input, &status);
649 goto out;
650 }
651
652 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
653 if (!process_rxstatus(hdcp, event_ctx, input, &status))
654 goto out;
655 if (event_ctx->rx_id_list_ready)
656 goto out;
657 }
658 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_stream_management,
659 &input->prepare_stream_manage,
660 &status, hdcp, "prepare_stream_manage"))
661 goto out;
662
663 if (!mod_hdcp_execute_and_set(mod_hdcp_write_stream_manage,
664 &input->stream_manage_write,
665 &status, hdcp, "stream_manage_write"))
666 goto out;
667out:
668 return status;
669}
670
671static enum mod_hdcp_status validate_stream_ready(struct mod_hdcp *hdcp,
672 struct mod_hdcp_event_context *event_ctx,
673 struct mod_hdcp_transition_input_hdcp2 *input)
674{
675 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
676
677 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
678 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
679 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
680 event_ctx->unexpected_event = 1;
681 goto out;
682 }
683 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
684 process_rxstatus(hdcp, event_ctx, input, &status);
685 goto out;
686 }
687
688 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
689 if (!process_rxstatus(hdcp, event_ctx, input, &status))
690 goto out;
691 if (event_ctx->rx_id_list_ready)
692 goto out;
693 }
694 if (is_hdmi_dvi_sl_hdcp(hdcp))
695 if (!mod_hdcp_execute_and_set(check_stream_ready_available,
696 &input->stream_ready_available,
697 &status, hdcp, "stream_ready_available"))
698 goto out;
699 if (!mod_hdcp_execute_and_set(mod_hdcp_read_stream_ready,
700 &input->stream_ready_read,
701 &status, hdcp, "stream_ready_read"))
702 goto out;
703 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_stream_ready,
704 &input->stream_ready_validation,
705 &status, hdcp, "stream_ready_validation"))
706 goto out;
707
708out:
709 return status;
710}
711
712static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp,
713 struct mod_hdcp_event_context *event_ctx,
714 struct mod_hdcp_transition_input_hdcp2 *input)
715{
716 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
717
718 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
719 event_ctx->unexpected_event = 1;
720 goto out;
721 }
722
723 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxcaps,
724 &input->rx_caps_read_dp,
725 &status, hdcp, "rx_caps_read_dp"))
726 goto out;
727 if (!mod_hdcp_execute_and_set(check_hdcp2_capable,
728 &input->hdcp2_capable_check, &status,
729 hdcp, "hdcp2_capable_check"))
730 goto out;
731out:
732 return status;
733}
734
735static enum mod_hdcp_status send_content_stream_type_dp(struct mod_hdcp *hdcp,
736 struct mod_hdcp_event_context *event_ctx,
737 struct mod_hdcp_transition_input_hdcp2 *input)
738{
739 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
740
741 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
742 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
743 event_ctx->unexpected_event = 1;
744 goto out;
745 }
746
747 if (!process_rxstatus(hdcp, event_ctx, input, &status))
748 goto out;
749 if (!mod_hdcp_execute_and_set(mod_hdcp_write_content_type,
750 &input->content_stream_type_write, &status,
751 hdcp, "content_stream_type_write"))
752 goto out;
753out:
754 return status;
755}
756
757enum mod_hdcp_status mod_hdcp_hdcp2_execution(struct mod_hdcp *hdcp,
758 struct mod_hdcp_event_context *event_ctx,
759 struct mod_hdcp_transition_input_hdcp2 *input)
760{
761 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
762
763 switch (current_state(hdcp)) {
764 case H2_A0_KNOWN_HDCP2_CAPABLE_RX:
765 status = known_hdcp2_capable_rx(hdcp, event_ctx, input);
766 break;
767 case H2_A1_SEND_AKE_INIT:
768 status = send_ake_init(hdcp, event_ctx, input);
769 break;
770 case H2_A1_VALIDATE_AKE_CERT:
771 status = validate_ake_cert(hdcp, event_ctx, input);
772 break;
773 case H2_A1_SEND_NO_STORED_KM:
774 status = send_no_stored_km(hdcp, event_ctx, input);
775 break;
776 case H2_A1_READ_H_PRIME:
777 status = read_h_prime(hdcp, event_ctx, input);
778 break;
779 case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
780 status = read_pairing_info_and_validate_h_prime(hdcp,
781 event_ctx, input);
782 break;
783 case H2_A1_SEND_STORED_KM:
784 status = send_stored_km(hdcp, event_ctx, input);
785 break;
786 case H2_A1_VALIDATE_H_PRIME:
787 status = validate_h_prime(hdcp, event_ctx, input);
788 break;
789 case H2_A2_LOCALITY_CHECK:
790 status = locality_check(hdcp, event_ctx, input);
791 break;
792 case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
793 status = exchange_ks_and_test_for_repeater(hdcp, event_ctx, input);
794 break;
795 case H2_ENABLE_ENCRYPTION:
796 status = enable_encryption(hdcp, event_ctx, input);
797 break;
798 case H2_A5_AUTHENTICATED:
799 status = authenticated(hdcp, event_ctx, input);
800 break;
801 case H2_A6_WAIT_FOR_RX_ID_LIST:
802 status = wait_for_rx_id_list(hdcp, event_ctx, input);
803 break;
804 case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
805 status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input);
806 break;
807 case H2_A9_SEND_STREAM_MANAGEMENT:
808 status = send_stream_management(hdcp, event_ctx, input);
809 break;
810 case H2_A9_VALIDATE_STREAM_READY:
811 status = validate_stream_ready(hdcp, event_ctx, input);
812 break;
813 default:
814 status = MOD_HDCP_STATUS_INVALID_STATE;
815 break;
816 }
817
818 return status;
819}
820
821enum mod_hdcp_status mod_hdcp_hdcp2_dp_execution(struct mod_hdcp *hdcp,
822 struct mod_hdcp_event_context *event_ctx,
823 struct mod_hdcp_transition_input_hdcp2 *input)
824{
825 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
826
827 switch (current_state(hdcp)) {
828 case D2_A0_DETERMINE_RX_HDCP_CAPABLE:
829 status = determine_rx_hdcp_capable_dp(hdcp, event_ctx, input);
830 break;
831 case D2_A1_SEND_AKE_INIT:
832 status = send_ake_init(hdcp, event_ctx, input);
833 break;
834 case D2_A1_VALIDATE_AKE_CERT:
835 status = validate_ake_cert(hdcp, event_ctx, input);
836 break;
837 case D2_A1_SEND_NO_STORED_KM:
838 status = send_no_stored_km(hdcp, event_ctx, input);
839 break;
840 case D2_A1_READ_H_PRIME:
841 status = read_h_prime(hdcp, event_ctx, input);
842 break;
843 case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
844 status = read_pairing_info_and_validate_h_prime(hdcp,
845 event_ctx, input);
846 break;
847 case D2_A1_SEND_STORED_KM:
848 status = send_stored_km(hdcp, event_ctx, input);
849 break;
850 case D2_A1_VALIDATE_H_PRIME:
851 status = validate_h_prime(hdcp, event_ctx, input);
852 break;
853 case D2_A2_LOCALITY_CHECK:
854 status = locality_check(hdcp, event_ctx, input);
855 break;
856 case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
857 status = exchange_ks_and_test_for_repeater(hdcp,
858 event_ctx, input);
859 break;
860 case D2_SEND_CONTENT_STREAM_TYPE:
861 status = send_content_stream_type_dp(hdcp, event_ctx, input);
862 break;
863 case D2_ENABLE_ENCRYPTION:
864 status = enable_encryption(hdcp, event_ctx, input);
865 break;
866 case D2_A5_AUTHENTICATED:
867 status = authenticated(hdcp, event_ctx, input);
868 break;
869 case D2_A6_WAIT_FOR_RX_ID_LIST:
870 status = wait_for_rx_id_list(hdcp, event_ctx, input);
871 break;
872 case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
873 status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input);
874 break;
875 case D2_A9_SEND_STREAM_MANAGEMENT:
876 status = send_stream_management(hdcp, event_ctx, input);
877 break;
878 case D2_A9_VALIDATE_STREAM_READY:
879 status = validate_stream_ready(hdcp, event_ctx, input);
880 break;
881 default:
882 status = MOD_HDCP_STATUS_INVALID_STATE;
883 break;
884 }
885
886 return status;
887}
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}