2 * Copyright 2018 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
26 #include <linux/delay.h>
30 static inline enum mod_hdcp_status check_receiver_id_list_ready(struct mod_hdcp *hdcp)
35 is_ready = HDCP_2_2_DP_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus_dp) ? 1 : 0;
37 is_ready = (HDCP_2_2_HDMI_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus[0]) &&
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;
44 static inline enum mod_hdcp_status check_hdcp2_capable(struct mod_hdcp *hdcp)
46 enum mod_hdcp_status status;
49 status = (hdcp->auth.msg.hdcp2.rxcaps_dp[2] & HDCP_2_2_RX_CAPS_VERSION_VAL) &&
50 HDCP_2_2_DP_HDCP_CAPABLE(hdcp->auth.msg.hdcp2.rxcaps_dp[0]) ?
51 MOD_HDCP_STATUS_SUCCESS :
52 MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE;
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;
60 static inline enum mod_hdcp_status check_reauthentication_request(
61 struct mod_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;
70 ret = HDCP_2_2_HDMI_RXSTATUS_REAUTH_REQ(hdcp->auth.msg.hdcp2.rxstatus[0]) ?
71 MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST :
72 MOD_HDCP_STATUS_SUCCESS;
76 static inline enum mod_hdcp_status check_link_integrity_failure_dp(
77 struct mod_hdcp *hdcp)
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;
84 static enum mod_hdcp_status check_ake_cert_available(struct mod_hdcp *hdcp)
86 enum mod_hdcp_status status;
89 if (is_dp_hdcp(hdcp)) {
90 status = MOD_HDCP_STATUS_SUCCESS;
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;
104 static enum mod_hdcp_status check_h_prime_available(struct mod_hdcp *hdcp)
106 enum mod_hdcp_status status;
109 status = mod_hdcp_read_rxstatus(hdcp);
110 if (status != MOD_HDCP_STATUS_SUCCESS)
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;
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;
128 static enum mod_hdcp_status check_pairing_info_available(struct mod_hdcp *hdcp)
130 enum mod_hdcp_status status;
133 status = mod_hdcp_read_rxstatus(hdcp);
134 if (status != MOD_HDCP_STATUS_SUCCESS)
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;
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;
152 static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp)
154 enum mod_hdcp_status status;
156 uint16_t max_wait = 20; // units of ms
157 uint16_t num_polls = 5;
158 uint16_t wait_time = max_wait / num_polls;
160 if (is_dp_hdcp(hdcp))
161 status = MOD_HDCP_STATUS_INVALID_OPERATION;
163 for (; num_polls; num_polls--) {
166 status = mod_hdcp_read_rxstatus(hdcp);
167 if (status != MOD_HDCP_STATUS_SUCCESS)
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)
181 static enum mod_hdcp_status check_stream_ready_available(struct mod_hdcp *hdcp)
183 enum mod_hdcp_status status;
186 if (is_dp_hdcp(hdcp)) {
187 status = MOD_HDCP_STATUS_INVALID_OPERATION;
189 status = mod_hdcp_read_rxstatus(hdcp);
190 if (status != MOD_HDCP_STATUS_SUCCESS)
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;
202 static inline uint8_t get_device_count(struct mod_hdcp *hdcp)
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);
208 static enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp)
210 /* device count must be greater than or equal to tracked hdcp displays */
211 return (get_device_count(hdcp) < get_added_display_count(hdcp)) ?
212 MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE :
213 MOD_HDCP_STATUS_SUCCESS;
216 static 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)
221 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxstatus,
222 &input->rxstatus_read, status,
223 hdcp, "rxstatus_read"))
225 if (!mod_hdcp_execute_and_set(check_reauthentication_request,
226 &input->reauth_request_check, status,
227 hdcp, "reauth_request_check"))
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"))
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);
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];
249 return (*status == MOD_HDCP_STATUS_SUCCESS);
252 static 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)
256 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
258 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
259 event_ctx->unexpected_event = 1;
262 if (!mod_hdcp_execute_and_set(mod_hdcp_read_hdcp2version,
263 &input->hdcp2version_read, &status,
264 hdcp, "hdcp2version_read"))
266 if (!mod_hdcp_execute_and_set(check_hdcp2_capable,
267 &input->hdcp2_capable_check, &status,
268 hdcp, "hdcp2_capable"))
274 static enum mod_hdcp_status send_ake_init(struct mod_hdcp *hdcp,
275 struct mod_hdcp_event_context *event_ctx,
276 struct mod_hdcp_transition_input_hdcp2 *input)
278 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
280 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
281 event_ctx->unexpected_event = 1;
284 if (!mod_hdcp_execute_and_set(mod_hdcp_add_display_topology,
285 &input->add_topology, &status,
286 hdcp, "add_topology"))
288 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_create_session,
289 &input->create_session, &status,
290 hdcp, "create_session"))
292 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_ake_init,
293 &input->ake_init_prepare, &status,
294 hdcp, "ake_init_prepare"))
296 if (!mod_hdcp_execute_and_set(mod_hdcp_write_ake_init,
297 &input->ake_init_write, &status,
298 hdcp, "ake_init_write"))
304 static enum mod_hdcp_status validate_ake_cert(struct mod_hdcp *hdcp,
305 struct mod_hdcp_event_context *event_ctx,
306 struct mod_hdcp_transition_input_hdcp2 *input)
308 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
311 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
312 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
313 event_ctx->unexpected_event = 1;
317 if (is_hdmi_dvi_sl_hdcp(hdcp))
318 if (!mod_hdcp_execute_and_set(check_ake_cert_available,
319 &input->ake_cert_available, &status,
320 hdcp, "ake_cert_available"))
322 if (!mod_hdcp_execute_and_set(mod_hdcp_read_ake_cert,
323 &input->ake_cert_read, &status,
324 hdcp, "ake_cert_read"))
326 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_ake_cert,
327 &input->ake_cert_validation, &status,
328 hdcp, "ake_cert_validation"))
334 static enum mod_hdcp_status send_no_stored_km(struct mod_hdcp *hdcp,
335 struct mod_hdcp_event_context *event_ctx,
336 struct mod_hdcp_transition_input_hdcp2 *input)
338 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
340 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
341 event_ctx->unexpected_event = 1;
345 if (!mod_hdcp_execute_and_set(mod_hdcp_write_no_stored_km,
346 &input->no_stored_km_write, &status,
347 hdcp, "no_stored_km_write"))
353 static enum mod_hdcp_status read_h_prime(struct mod_hdcp *hdcp,
354 struct mod_hdcp_event_context *event_ctx,
355 struct mod_hdcp_transition_input_hdcp2 *input)
357 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
359 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
360 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
361 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
362 event_ctx->unexpected_event = 1;
366 if (!mod_hdcp_execute_and_set(check_h_prime_available,
367 &input->h_prime_available, &status,
368 hdcp, "h_prime_available"))
371 if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime,
372 &input->h_prime_read, &status,
373 hdcp, "h_prime_read"))
379 static enum mod_hdcp_status read_pairing_info_and_validate_h_prime(
380 struct mod_hdcp *hdcp,
381 struct mod_hdcp_event_context *event_ctx,
382 struct mod_hdcp_transition_input_hdcp2 *input)
384 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
386 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
387 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
388 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
389 event_ctx->unexpected_event = 1;
393 if (!mod_hdcp_execute_and_set(check_pairing_info_available,
394 &input->pairing_available, &status,
395 hdcp, "pairing_available"))
397 if (!mod_hdcp_execute_and_set(mod_hdcp_read_pairing_info,
398 &input->pairing_info_read, &status,
399 hdcp, "pairing_info_read"))
401 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime,
402 &input->h_prime_validation, &status,
403 hdcp, "h_prime_validation"))
409 static enum mod_hdcp_status send_stored_km(struct mod_hdcp *hdcp,
410 struct mod_hdcp_event_context *event_ctx,
411 struct mod_hdcp_transition_input_hdcp2 *input)
413 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
415 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
416 event_ctx->unexpected_event = 1;
420 if (!mod_hdcp_execute_and_set(mod_hdcp_write_stored_km,
421 &input->stored_km_write, &status,
422 hdcp, "stored_km_write"))
428 static enum mod_hdcp_status validate_h_prime(struct mod_hdcp *hdcp,
429 struct mod_hdcp_event_context *event_ctx,
430 struct mod_hdcp_transition_input_hdcp2 *input)
432 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
434 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
435 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
436 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
437 event_ctx->unexpected_event = 1;
441 if (!mod_hdcp_execute_and_set(check_h_prime_available,
442 &input->h_prime_available, &status,
443 hdcp, "h_prime_available"))
445 if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime,
446 &input->h_prime_read, &status,
447 hdcp, "h_prime_read"))
449 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime,
450 &input->h_prime_validation, &status,
451 hdcp, "h_prime_validation"))
457 static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp,
458 struct mod_hdcp_event_context *event_ctx,
459 struct mod_hdcp_transition_input_hdcp2 *input)
461 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
463 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
464 event_ctx->unexpected_event = 1;
468 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_lc_init,
469 &input->lc_init_prepare, &status,
470 hdcp, "lc_init_prepare"))
472 if (!mod_hdcp_execute_and_set(mod_hdcp_write_lc_init,
473 &input->lc_init_write, &status,
474 hdcp, "lc_init_write"))
476 if (is_dp_hdcp(hdcp))
479 if (!mod_hdcp_execute_and_set(poll_l_prime_available,
480 &input->l_prime_available_poll, &status,
481 hdcp, "l_prime_available_poll"))
483 if (!mod_hdcp_execute_and_set(mod_hdcp_read_l_prime,
484 &input->l_prime_read, &status,
485 hdcp, "l_prime_read"))
487 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_l_prime,
488 &input->l_prime_validation, &status,
489 hdcp, "l_prime_validation"))
495 static enum mod_hdcp_status exchange_ks_and_test_for_repeater(struct mod_hdcp *hdcp,
496 struct mod_hdcp_event_context *event_ctx,
497 struct mod_hdcp_transition_input_hdcp2 *input)
499 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
501 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
502 event_ctx->unexpected_event = 1;
506 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_eks,
507 &input->eks_prepare, &status,
508 hdcp, "eks_prepare"))
510 if (!mod_hdcp_execute_and_set(mod_hdcp_write_eks,
511 &input->eks_write, &status,
518 static enum mod_hdcp_status enable_encryption(struct mod_hdcp *hdcp,
519 struct mod_hdcp_event_context *event_ctx,
520 struct mod_hdcp_transition_input_hdcp2 *input)
522 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
524 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
525 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
526 event_ctx->unexpected_event = 1;
529 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
530 process_rxstatus(hdcp, event_ctx, input, &status);
534 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
535 if (!process_rxstatus(hdcp, event_ctx, input, &status))
537 if (event_ctx->rx_id_list_ready)
540 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_enable_encryption,
541 &input->enable_encryption, &status,
542 hdcp, "enable_encryption"))
544 if (is_dp_mst_hdcp(hdcp)) {
545 if (!mod_hdcp_execute_and_set(
546 mod_hdcp_hdcp2_enable_dp_stream_encryption,
547 &input->stream_encryption_dp, &status,
548 hdcp, "stream_encryption_dp"))
555 static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp,
556 struct mod_hdcp_event_context *event_ctx,
557 struct mod_hdcp_transition_input_hdcp2 *input)
559 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
561 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
562 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
563 event_ctx->unexpected_event = 1;
567 if (!process_rxstatus(hdcp, event_ctx, input, &status))
569 if (event_ctx->rx_id_list_ready)
575 static enum mod_hdcp_status wait_for_rx_id_list(struct mod_hdcp *hdcp,
576 struct mod_hdcp_event_context *event_ctx,
577 struct mod_hdcp_transition_input_hdcp2 *input)
579 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
581 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
582 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
583 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
584 event_ctx->unexpected_event = 1;
588 if (!process_rxstatus(hdcp, event_ctx, input, &status))
590 if (!event_ctx->rx_id_list_ready) {
591 status = MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY;
598 static enum mod_hdcp_status verify_rx_id_list_and_send_ack(struct mod_hdcp *hdcp,
599 struct mod_hdcp_event_context *event_ctx,
600 struct mod_hdcp_transition_input_hdcp2 *input)
602 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
604 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
605 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
606 event_ctx->unexpected_event = 1;
609 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
610 process_rxstatus(hdcp, event_ctx, input, &status);
614 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rx_id_list,
615 &input->rx_id_list_read,
616 &status, hdcp, "receiver_id_list_read"))
618 if (!mod_hdcp_execute_and_set(check_device_count,
619 &input->device_count_check,
620 &status, hdcp, "device_count_check"))
622 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_rx_id_list,
623 &input->rx_id_list_validation,
624 &status, hdcp, "rx_id_list_validation"))
626 if (!mod_hdcp_execute_and_set(mod_hdcp_write_repeater_auth_ack,
627 &input->repeater_auth_ack_write,
628 &status, hdcp, "repeater_auth_ack_write"))
634 static enum mod_hdcp_status send_stream_management(struct mod_hdcp *hdcp,
635 struct mod_hdcp_event_context *event_ctx,
636 struct mod_hdcp_transition_input_hdcp2 *input)
638 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
640 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
641 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
642 event_ctx->unexpected_event = 1;
645 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
646 process_rxstatus(hdcp, event_ctx, input, &status);
650 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
651 if (!process_rxstatus(hdcp, event_ctx, input, &status))
653 if (event_ctx->rx_id_list_ready)
656 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_stream_management,
657 &input->prepare_stream_manage,
658 &status, hdcp, "prepare_stream_manage"))
661 if (!mod_hdcp_execute_and_set(mod_hdcp_write_stream_manage,
662 &input->stream_manage_write,
663 &status, hdcp, "stream_manage_write"))
669 static enum mod_hdcp_status validate_stream_ready(struct mod_hdcp *hdcp,
670 struct mod_hdcp_event_context *event_ctx,
671 struct mod_hdcp_transition_input_hdcp2 *input)
673 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
675 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
676 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
677 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
678 event_ctx->unexpected_event = 1;
681 if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
682 process_rxstatus(hdcp, event_ctx, input, &status);
686 if (is_hdmi_dvi_sl_hdcp(hdcp)) {
687 if (!process_rxstatus(hdcp, event_ctx, input, &status))
689 if (event_ctx->rx_id_list_ready) {
693 if (is_hdmi_dvi_sl_hdcp(hdcp))
694 if (!mod_hdcp_execute_and_set(check_stream_ready_available,
695 &input->stream_ready_available,
696 &status, hdcp, "stream_ready_available"))
698 if (!mod_hdcp_execute_and_set(mod_hdcp_read_stream_ready,
699 &input->stream_ready_read,
700 &status, hdcp, "stream_ready_read"))
702 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_stream_ready,
703 &input->stream_ready_validation,
704 &status, hdcp, "stream_ready_validation"))
711 static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp,
712 struct mod_hdcp_event_context *event_ctx,
713 struct mod_hdcp_transition_input_hdcp2 *input)
715 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
717 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
718 event_ctx->unexpected_event = 1;
722 if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxcaps,
723 &input->rx_caps_read_dp,
724 &status, hdcp, "rx_caps_read_dp"))
726 if (!mod_hdcp_execute_and_set(check_hdcp2_capable,
727 &input->hdcp2_capable_check, &status,
728 hdcp, "hdcp2_capable_check"))
734 static enum mod_hdcp_status send_content_stream_type_dp(struct mod_hdcp *hdcp,
735 struct mod_hdcp_event_context *event_ctx,
736 struct mod_hdcp_transition_input_hdcp2 *input)
738 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
740 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
741 event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
742 event_ctx->unexpected_event = 1;
746 if (!process_rxstatus(hdcp, event_ctx, input, &status))
748 if (!mod_hdcp_execute_and_set(mod_hdcp_write_content_type,
749 &input->content_stream_type_write, &status,
750 hdcp, "content_stream_type_write"))
756 enum mod_hdcp_status mod_hdcp_hdcp2_execution(struct mod_hdcp *hdcp,
757 struct mod_hdcp_event_context *event_ctx,
758 struct mod_hdcp_transition_input_hdcp2 *input)
760 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
762 switch (current_state(hdcp)) {
763 case H2_A0_KNOWN_HDCP2_CAPABLE_RX:
764 status = known_hdcp2_capable_rx(hdcp, event_ctx, input);
766 case H2_A1_SEND_AKE_INIT:
767 status = send_ake_init(hdcp, event_ctx, input);
769 case H2_A1_VALIDATE_AKE_CERT:
770 status = validate_ake_cert(hdcp, event_ctx, input);
772 case H2_A1_SEND_NO_STORED_KM:
773 status = send_no_stored_km(hdcp, event_ctx, input);
775 case H2_A1_READ_H_PRIME:
776 status = read_h_prime(hdcp, event_ctx, input);
778 case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
779 status = read_pairing_info_and_validate_h_prime(hdcp,
782 case H2_A1_SEND_STORED_KM:
783 status = send_stored_km(hdcp, event_ctx, input);
785 case H2_A1_VALIDATE_H_PRIME:
786 status = validate_h_prime(hdcp, event_ctx, input);
788 case H2_A2_LOCALITY_CHECK:
789 status = locality_check(hdcp, event_ctx, input);
791 case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
792 status = exchange_ks_and_test_for_repeater(hdcp, event_ctx, input);
794 case H2_ENABLE_ENCRYPTION:
795 status = enable_encryption(hdcp, event_ctx, input);
797 case H2_A5_AUTHENTICATED:
798 status = authenticated(hdcp, event_ctx, input);
800 case H2_A6_WAIT_FOR_RX_ID_LIST:
801 status = wait_for_rx_id_list(hdcp, event_ctx, input);
803 case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
804 status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input);
806 case H2_A9_SEND_STREAM_MANAGEMENT:
807 status = send_stream_management(hdcp, event_ctx, input);
809 case H2_A9_VALIDATE_STREAM_READY:
810 status = validate_stream_ready(hdcp, event_ctx, input);
813 status = MOD_HDCP_STATUS_INVALID_STATE;
820 enum mod_hdcp_status mod_hdcp_hdcp2_dp_execution(struct mod_hdcp *hdcp,
821 struct mod_hdcp_event_context *event_ctx,
822 struct mod_hdcp_transition_input_hdcp2 *input)
824 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
826 switch (current_state(hdcp)) {
827 case D2_A0_DETERMINE_RX_HDCP_CAPABLE:
828 status = determine_rx_hdcp_capable_dp(hdcp, event_ctx, input);
830 case D2_A1_SEND_AKE_INIT:
831 status = send_ake_init(hdcp, event_ctx, input);
833 case D2_A1_VALIDATE_AKE_CERT:
834 status = validate_ake_cert(hdcp, event_ctx, input);
836 case D2_A1_SEND_NO_STORED_KM:
837 status = send_no_stored_km(hdcp, event_ctx, input);
839 case D2_A1_READ_H_PRIME:
840 status = read_h_prime(hdcp, event_ctx, input);
842 case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
843 status = read_pairing_info_and_validate_h_prime(hdcp,
846 case D2_A1_SEND_STORED_KM:
847 status = send_stored_km(hdcp, event_ctx, input);
849 case D2_A1_VALIDATE_H_PRIME:
850 status = validate_h_prime(hdcp, event_ctx, input);
852 case D2_A2_LOCALITY_CHECK:
853 status = locality_check(hdcp, event_ctx, input);
855 case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
856 status = exchange_ks_and_test_for_repeater(hdcp,
859 case D2_SEND_CONTENT_STREAM_TYPE:
860 status = send_content_stream_type_dp(hdcp, event_ctx, input);
862 case D2_ENABLE_ENCRYPTION:
863 status = enable_encryption(hdcp, event_ctx, input);
865 case D2_A5_AUTHENTICATED:
866 status = authenticated(hdcp, event_ctx, input);
868 case D2_A6_WAIT_FOR_RX_ID_LIST:
869 status = wait_for_rx_id_list(hdcp, event_ctx, input);
871 case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
872 status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input);
874 case D2_A9_SEND_STREAM_MANAGEMENT:
875 status = send_stream_management(hdcp, event_ctx, input);
877 case D2_A9_VALIDATE_STREAM_READY:
878 status = validate_stream_ready(hdcp, event_ctx, input);
881 status = MOD_HDCP_STATUS_INVALID_STATE;