1 /*
2 * Copyright 2019 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 "hdcp.h"
27
validate_bksv(struct mod_hdcp * hdcp)28 static inline enum mod_hdcp_status validate_bksv(struct mod_hdcp *hdcp)
29 {
30 uint64_t n = 0;
31 uint8_t count = 0;
32 u8 bksv[sizeof(n)] = { };
33
34 memcpy(bksv, hdcp->auth.msg.hdcp1.bksv, sizeof(hdcp->auth.msg.hdcp1.bksv));
35 n = *(uint64_t *)bksv;
36
37 while (n) {
38 count++;
39 n &= (n - 1);
40 }
41 return (count == 20) ? MOD_HDCP_STATUS_SUCCESS :
42 MOD_HDCP_STATUS_HDCP1_INVALID_BKSV;
43 }
44
check_ksv_ready(struct mod_hdcp * hdcp)45 static inline enum mod_hdcp_status check_ksv_ready(struct mod_hdcp *hdcp)
46 {
47 if (is_dp_hdcp(hdcp))
48 return (hdcp->auth.msg.hdcp1.bstatus & DP_BSTATUS_READY) ?
49 MOD_HDCP_STATUS_SUCCESS :
50 MOD_HDCP_STATUS_HDCP1_KSV_LIST_NOT_READY;
51 return (hdcp->auth.msg.hdcp1.bcaps & DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY) ?
52 MOD_HDCP_STATUS_SUCCESS :
53 MOD_HDCP_STATUS_HDCP1_KSV_LIST_NOT_READY;
54 }
55
check_hdcp_capable_dp(struct mod_hdcp * hdcp)56 static inline enum mod_hdcp_status check_hdcp_capable_dp(struct mod_hdcp *hdcp)
57 {
58 return (hdcp->auth.msg.hdcp1.bcaps & DP_BCAPS_HDCP_CAPABLE) ?
59 MOD_HDCP_STATUS_SUCCESS :
60 MOD_HDCP_STATUS_HDCP1_NOT_CAPABLE;
61 }
62
check_r0p_available_dp(struct mod_hdcp * hdcp)63 static inline enum mod_hdcp_status check_r0p_available_dp(struct mod_hdcp *hdcp)
64 {
65 enum mod_hdcp_status status;
66 if (is_dp_hdcp(hdcp)) {
67 status = (hdcp->auth.msg.hdcp1.bstatus &
68 DP_BSTATUS_R0_PRIME_READY) ?
69 MOD_HDCP_STATUS_SUCCESS :
70 MOD_HDCP_STATUS_HDCP1_R0_PRIME_PENDING;
71 } else {
72 status = MOD_HDCP_STATUS_INVALID_OPERATION;
73 }
74 return status;
75 }
76
check_link_integrity_dp(struct mod_hdcp * hdcp)77 static inline enum mod_hdcp_status check_link_integrity_dp(
78 struct mod_hdcp *hdcp)
79 {
80 return (hdcp->auth.msg.hdcp1.bstatus &
81 DP_BSTATUS_LINK_FAILURE) ?
82 MOD_HDCP_STATUS_HDCP1_LINK_INTEGRITY_FAILURE :
83 MOD_HDCP_STATUS_SUCCESS;
84 }
85
check_no_reauthentication_request_dp(struct mod_hdcp * hdcp)86 static inline enum mod_hdcp_status check_no_reauthentication_request_dp(
87 struct mod_hdcp *hdcp)
88 {
89 return (hdcp->auth.msg.hdcp1.bstatus & DP_BSTATUS_REAUTH_REQ) ?
90 MOD_HDCP_STATUS_HDCP1_REAUTH_REQUEST_ISSUED :
91 MOD_HDCP_STATUS_SUCCESS;
92 }
93
check_no_max_cascade(struct mod_hdcp * hdcp)94 static inline enum mod_hdcp_status check_no_max_cascade(struct mod_hdcp *hdcp)
95 {
96 enum mod_hdcp_status status;
97
98 if (is_dp_hdcp(hdcp))
99 status = DRM_HDCP_MAX_CASCADE_EXCEEDED(hdcp->auth.msg.hdcp1.binfo_dp >> 8)
100 ? MOD_HDCP_STATUS_HDCP1_MAX_CASCADE_EXCEEDED_FAILURE
101 : MOD_HDCP_STATUS_SUCCESS;
102 else
103 status = DRM_HDCP_MAX_CASCADE_EXCEEDED(hdcp->auth.msg.hdcp1.bstatus >> 8)
104 ? MOD_HDCP_STATUS_HDCP1_MAX_CASCADE_EXCEEDED_FAILURE
105 : MOD_HDCP_STATUS_SUCCESS;
106 return status;
107 }
108
check_no_max_devs(struct mod_hdcp * hdcp)109 static inline enum mod_hdcp_status check_no_max_devs(struct mod_hdcp *hdcp)
110 {
111 enum mod_hdcp_status status;
112
113 if (is_dp_hdcp(hdcp))
114 status = DRM_HDCP_MAX_DEVICE_EXCEEDED(hdcp->auth.msg.hdcp1.binfo_dp) ?
115 MOD_HDCP_STATUS_HDCP1_MAX_DEVS_EXCEEDED_FAILURE :
116 MOD_HDCP_STATUS_SUCCESS;
117 else
118 status = DRM_HDCP_MAX_DEVICE_EXCEEDED(hdcp->auth.msg.hdcp1.bstatus) ?
119 MOD_HDCP_STATUS_HDCP1_MAX_DEVS_EXCEEDED_FAILURE :
120 MOD_HDCP_STATUS_SUCCESS;
121 return status;
122 }
123
get_device_count(struct mod_hdcp * hdcp)124 static inline uint8_t get_device_count(struct mod_hdcp *hdcp)
125 {
126 return is_dp_hdcp(hdcp) ?
127 DRM_HDCP_NUM_DOWNSTREAM(hdcp->auth.msg.hdcp1.binfo_dp) :
128 DRM_HDCP_NUM_DOWNSTREAM(hdcp->auth.msg.hdcp1.bstatus);
129 }
130
check_device_count(struct mod_hdcp * hdcp)131 static inline enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp)
132 {
133 /* Avoid device count == 0 to do authentication */
134 if (0 == get_device_count(hdcp)) {
135 return MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE;
136 }
137
138 /* Some MST display may choose to report the internal panel as an HDCP RX.
139 * To update this condition with 1(because the immediate repeater's internal
140 * panel is possibly not included in DEVICE_COUNT) + get_device_count(hdcp).
141 * Device count must be greater than or equal to tracked hdcp displays.
142 */
143 return ((1 + get_device_count(hdcp)) < get_active_display_count(hdcp)) ?
144 MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE :
145 MOD_HDCP_STATUS_SUCCESS;
146 }
147
wait_for_active_rx(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)148 static enum mod_hdcp_status wait_for_active_rx(struct mod_hdcp *hdcp,
149 struct mod_hdcp_event_context *event_ctx,
150 struct mod_hdcp_transition_input_hdcp1 *input)
151 {
152 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
153
154 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
155 event_ctx->unexpected_event = 1;
156 goto out;
157 }
158
159 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bksv,
160 &input->bksv_read, &status,
161 hdcp, "bksv_read"))
162 goto out;
163 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bcaps,
164 &input->bcaps_read, &status,
165 hdcp, "bcaps_read"))
166 goto out;
167 out:
168 return status;
169 }
170
exchange_ksvs(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)171 static enum mod_hdcp_status exchange_ksvs(struct mod_hdcp *hdcp,
172 struct mod_hdcp_event_context *event_ctx,
173 struct mod_hdcp_transition_input_hdcp1 *input)
174 {
175 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
176
177 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
178 event_ctx->unexpected_event = 1;
179 goto out;
180 }
181
182 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_create_session,
183 &input->create_session, &status,
184 hdcp, "create_session"))
185 goto out;
186 if (!mod_hdcp_execute_and_set(mod_hdcp_write_an,
187 &input->an_write, &status,
188 hdcp, "an_write"))
189 goto out;
190 if (!mod_hdcp_execute_and_set(mod_hdcp_write_aksv,
191 &input->aksv_write, &status,
192 hdcp, "aksv_write"))
193 goto out;
194 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bksv,
195 &input->bksv_read, &status,
196 hdcp, "bksv_read"))
197 goto out;
198 if (!mod_hdcp_execute_and_set(validate_bksv,
199 &input->bksv_validation, &status,
200 hdcp, "bksv_validation"))
201 goto out;
202 if (hdcp->auth.msg.hdcp1.ainfo) {
203 if (!mod_hdcp_execute_and_set(mod_hdcp_write_ainfo,
204 &input->ainfo_write, &status,
205 hdcp, "ainfo_write"))
206 goto out;
207 }
208 out:
209 return status;
210 }
211
computations_validate_rx_test_for_repeater(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)212 static enum mod_hdcp_status computations_validate_rx_test_for_repeater(
213 struct mod_hdcp *hdcp,
214 struct mod_hdcp_event_context *event_ctx,
215 struct mod_hdcp_transition_input_hdcp1 *input)
216 {
217 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
218
219 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
220 event_ctx->unexpected_event = 1;
221 goto out;
222 }
223
224 if (!mod_hdcp_execute_and_set(mod_hdcp_read_r0p,
225 &input->r0p_read, &status,
226 hdcp, "r0p_read"))
227 goto out;
228 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_validate_rx,
229 &input->rx_validation, &status,
230 hdcp, "rx_validation"))
231 goto out;
232 if (hdcp->connection.is_repeater) {
233 if (!hdcp->connection.link.adjust.hdcp1.postpone_encryption)
234 if (!mod_hdcp_execute_and_set(
235 mod_hdcp_hdcp1_enable_encryption,
236 &input->encryption, &status,
237 hdcp, "encryption"))
238 goto out;
239 } else {
240 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_enable_encryption,
241 &input->encryption, &status,
242 hdcp, "encryption"))
243 goto out;
244 if (is_dp_mst_hdcp(hdcp))
245 if (!mod_hdcp_execute_and_set(
246 mod_hdcp_hdcp1_enable_dp_stream_encryption,
247 &input->stream_encryption_dp, &status,
248 hdcp, "stream_encryption_dp"))
249 goto out;
250 }
251 out:
252 return status;
253 }
254
authenticated(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)255 static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp,
256 struct mod_hdcp_event_context *event_ctx,
257 struct mod_hdcp_transition_input_hdcp1 *input)
258 {
259 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
260
261 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
262 event_ctx->unexpected_event = 1;
263 goto out;
264 }
265
266 mod_hdcp_execute_and_set(mod_hdcp_hdcp1_link_maintenance,
267 &input->link_maintenance, &status,
268 hdcp, "link_maintenance");
269 out:
270 return status;
271 }
272
wait_for_ready(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)273 static enum mod_hdcp_status wait_for_ready(struct mod_hdcp *hdcp,
274 struct mod_hdcp_event_context *event_ctx,
275 struct mod_hdcp_transition_input_hdcp1 *input)
276 {
277 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
278
279 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
280 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
281 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
282 event_ctx->unexpected_event = 1;
283 goto out;
284 }
285
286 if (is_dp_hdcp(hdcp)) {
287 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bstatus,
288 &input->bstatus_read, &status,
289 hdcp, "bstatus_read"))
290 goto out;
291 if (!mod_hdcp_execute_and_set(check_link_integrity_dp,
292 &input->link_integrity_check, &status,
293 hdcp, "link_integrity_check"))
294 goto out;
295 if (!mod_hdcp_execute_and_set(check_no_reauthentication_request_dp,
296 &input->reauth_request_check, &status,
297 hdcp, "reauth_request_check"))
298 goto out;
299 } else {
300 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bcaps,
301 &input->bcaps_read, &status,
302 hdcp, "bcaps_read"))
303 goto out;
304 }
305 if (!mod_hdcp_execute_and_set(check_ksv_ready,
306 &input->ready_check, &status,
307 hdcp, "ready_check"))
308 goto out;
309 out:
310 return status;
311 }
312
read_ksv_list(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)313 static enum mod_hdcp_status read_ksv_list(struct mod_hdcp *hdcp,
314 struct mod_hdcp_event_context *event_ctx,
315 struct mod_hdcp_transition_input_hdcp1 *input)
316 {
317 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
318 uint8_t device_count;
319
320 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
321 event_ctx->unexpected_event = 1;
322 goto out;
323 }
324
325 if (is_dp_hdcp(hdcp)) {
326 if (!mod_hdcp_execute_and_set(mod_hdcp_read_binfo,
327 &input->binfo_read_dp, &status,
328 hdcp, "binfo_read_dp"))
329 goto out;
330 } else {
331 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bstatus,
332 &input->bstatus_read, &status,
333 hdcp, "bstatus_read"))
334 goto out;
335 }
336 if (!mod_hdcp_execute_and_set(check_no_max_cascade,
337 &input->max_cascade_check, &status,
338 hdcp, "max_cascade_check"))
339 goto out;
340 if (!mod_hdcp_execute_and_set(check_no_max_devs,
341 &input->max_devs_check, &status,
342 hdcp, "max_devs_check"))
343 goto out;
344 if (!mod_hdcp_execute_and_set(check_device_count,
345 &input->device_count_check, &status,
346 hdcp, "device_count_check"))
347 goto out;
348 device_count = get_device_count(hdcp);
349 hdcp->auth.msg.hdcp1.ksvlist_size = device_count*5;
350 if (!mod_hdcp_execute_and_set(mod_hdcp_read_ksvlist,
351 &input->ksvlist_read, &status,
352 hdcp, "ksvlist_read"))
353 goto out;
354 if (!mod_hdcp_execute_and_set(mod_hdcp_read_vp,
355 &input->vp_read, &status,
356 hdcp, "vp_read"))
357 goto out;
358 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_validate_ksvlist_vp,
359 &input->ksvlist_vp_validation, &status,
360 hdcp, "ksvlist_vp_validation"))
361 goto out;
362 if (input->encryption != PASS)
363 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_enable_encryption,
364 &input->encryption, &status,
365 hdcp, "encryption"))
366 goto out;
367 if (is_dp_mst_hdcp(hdcp))
368 if (!mod_hdcp_execute_and_set(
369 mod_hdcp_hdcp1_enable_dp_stream_encryption,
370 &input->stream_encryption_dp, &status,
371 hdcp, "stream_encryption_dp"))
372 goto out;
373 out:
374 return status;
375 }
376
determine_rx_hdcp_capable_dp(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)377 static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp,
378 struct mod_hdcp_event_context *event_ctx,
379 struct mod_hdcp_transition_input_hdcp1 *input)
380 {
381 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
382
383 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
384 event_ctx->unexpected_event = 1;
385 goto out;
386 }
387
388 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bcaps,
389 &input->bcaps_read, &status,
390 hdcp, "bcaps_read"))
391 goto out;
392 if (!mod_hdcp_execute_and_set(check_hdcp_capable_dp,
393 &input->hdcp_capable_dp, &status,
394 hdcp, "hdcp_capable_dp"))
395 goto out;
396 out:
397 return status;
398 }
399
wait_for_r0_prime_dp(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)400 static enum mod_hdcp_status wait_for_r0_prime_dp(struct mod_hdcp *hdcp,
401 struct mod_hdcp_event_context *event_ctx,
402 struct mod_hdcp_transition_input_hdcp1 *input)
403 {
404 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
405
406 if (event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
407 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
408 event_ctx->unexpected_event = 1;
409 goto out;
410 }
411
412 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bstatus,
413 &input->bstatus_read, &status,
414 hdcp, "bstatus_read"))
415 goto out;
416 if (!mod_hdcp_execute_and_set(check_r0p_available_dp,
417 &input->r0p_available_dp, &status,
418 hdcp, "r0p_available_dp"))
419 goto out;
420 out:
421 return status;
422 }
423
authenticated_dp(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)424 static enum mod_hdcp_status authenticated_dp(struct mod_hdcp *hdcp,
425 struct mod_hdcp_event_context *event_ctx,
426 struct mod_hdcp_transition_input_hdcp1 *input)
427 {
428 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
429
430 if (event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
431 event_ctx->unexpected_event = 1;
432 goto out;
433 }
434
435 mod_hdcp_execute_and_set(mod_hdcp_read_bstatus,
436 &input->bstatus_read, &status,
437 hdcp, "bstatus_read");
438
439 mod_hdcp_execute_and_set(check_link_integrity_dp,
440 &input->link_integrity_check, &status,
441 hdcp, "link_integrity_check");
442
443 mod_hdcp_execute_and_set(check_no_reauthentication_request_dp,
444 &input->reauth_request_check, &status,
445 hdcp, "reauth_request_check");
446
447 out:
448 return status;
449 }
450
mod_hdcp_execute_and_set(mod_hdcp_action func,uint8_t * flag,enum mod_hdcp_status * status,struct mod_hdcp * hdcp,char * str)451 uint8_t mod_hdcp_execute_and_set(
452 mod_hdcp_action func, uint8_t *flag,
453 enum mod_hdcp_status *status, struct mod_hdcp *hdcp, char *str)
454 {
455 *status = func(hdcp);
456 if (*status == MOD_HDCP_STATUS_SUCCESS && *flag != PASS) {
457 HDCP_INPUT_PASS_TRACE(hdcp, str);
458 *flag = PASS;
459 } else if (*status != MOD_HDCP_STATUS_SUCCESS && *flag != FAIL) {
460 HDCP_INPUT_FAIL_TRACE(hdcp, str);
461 *flag = FAIL;
462 }
463 return (*status == MOD_HDCP_STATUS_SUCCESS);
464 }
465
mod_hdcp_hdcp1_execution(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)466 enum mod_hdcp_status mod_hdcp_hdcp1_execution(struct mod_hdcp *hdcp,
467 struct mod_hdcp_event_context *event_ctx,
468 struct mod_hdcp_transition_input_hdcp1 *input)
469 {
470 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
471
472 switch (current_state(hdcp)) {
473 case H1_A0_WAIT_FOR_ACTIVE_RX:
474 status = wait_for_active_rx(hdcp, event_ctx, input);
475 break;
476 case H1_A1_EXCHANGE_KSVS:
477 status = exchange_ksvs(hdcp, event_ctx, input);
478 break;
479 case H1_A2_COMPUTATIONS_A3_VALIDATE_RX_A6_TEST_FOR_REPEATER:
480 status = computations_validate_rx_test_for_repeater(hdcp,
481 event_ctx, input);
482 break;
483 case H1_A45_AUTHENTICATED:
484 status = authenticated(hdcp, event_ctx, input);
485 break;
486 case H1_A8_WAIT_FOR_READY:
487 status = wait_for_ready(hdcp, event_ctx, input);
488 break;
489 case H1_A9_READ_KSV_LIST:
490 status = read_ksv_list(hdcp, event_ctx, input);
491 break;
492 default:
493 status = MOD_HDCP_STATUS_INVALID_STATE;
494 break;
495 }
496
497 return status;
498 }
499
mod_hdcp_hdcp1_dp_execution(struct mod_hdcp * hdcp,struct mod_hdcp_event_context * event_ctx,struct mod_hdcp_transition_input_hdcp1 * input)500 enum mod_hdcp_status mod_hdcp_hdcp1_dp_execution(struct mod_hdcp *hdcp,
501 struct mod_hdcp_event_context *event_ctx,
502 struct mod_hdcp_transition_input_hdcp1 *input)
503 {
504 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
505
506 switch (current_state(hdcp)) {
507 case D1_A0_DETERMINE_RX_HDCP_CAPABLE:
508 status = determine_rx_hdcp_capable_dp(hdcp, event_ctx, input);
509 break;
510 case D1_A1_EXCHANGE_KSVS:
511 status = exchange_ksvs(hdcp, event_ctx, input);
512 break;
513 case D1_A23_WAIT_FOR_R0_PRIME:
514 status = wait_for_r0_prime_dp(hdcp, event_ctx, input);
515 break;
516 case D1_A2_COMPUTATIONS_A3_VALIDATE_RX_A5_TEST_FOR_REPEATER:
517 status = computations_validate_rx_test_for_repeater(
518 hdcp, event_ctx, input);
519 break;
520 case D1_A4_AUTHENTICATED:
521 status = authenticated_dp(hdcp, event_ctx, input);
522 break;
523 case D1_A6_WAIT_FOR_READY:
524 status = wait_for_ready(hdcp, event_ctx, input);
525 break;
526 case D1_A7_READ_KSV_LIST:
527 status = read_ksv_list(hdcp, event_ctx, input);
528 break;
529 default:
530 status = MOD_HDCP_STATUS_INVALID_STATE;
531 break;
532 }
533
534 return status;
535 }
536