2 * Copyright 2019 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.
28 static inline enum mod_hdcp_status validate_bksv(struct mod_hdcp *hdcp)
33 memcpy(&n, hdcp->auth.msg.hdcp1.bksv, sizeof(uint64_t));
39 return (count == 20) ? MOD_HDCP_STATUS_SUCCESS :
40 MOD_HDCP_STATUS_HDCP1_INVALID_BKSV;
43 static inline enum mod_hdcp_status check_ksv_ready(struct mod_hdcp *hdcp)
46 return (hdcp->auth.msg.hdcp1.bstatus & DP_BSTATUS_READY) ?
47 MOD_HDCP_STATUS_SUCCESS :
48 MOD_HDCP_STATUS_HDCP1_KSV_LIST_NOT_READY;
49 return (hdcp->auth.msg.hdcp1.bcaps & DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY) ?
50 MOD_HDCP_STATUS_SUCCESS :
51 MOD_HDCP_STATUS_HDCP1_KSV_LIST_NOT_READY;
54 static inline enum mod_hdcp_status check_hdcp_capable_dp(struct mod_hdcp *hdcp)
56 return (hdcp->auth.msg.hdcp1.bcaps & DP_BCAPS_HDCP_CAPABLE) ?
57 MOD_HDCP_STATUS_SUCCESS :
58 MOD_HDCP_STATUS_HDCP1_NOT_CAPABLE;
61 static inline enum mod_hdcp_status check_r0p_available_dp(struct mod_hdcp *hdcp)
63 enum mod_hdcp_status status;
64 if (is_dp_hdcp(hdcp)) {
65 status = (hdcp->auth.msg.hdcp1.bstatus &
66 DP_BSTATUS_R0_PRIME_READY) ?
67 MOD_HDCP_STATUS_SUCCESS :
68 MOD_HDCP_STATUS_HDCP1_R0_PRIME_PENDING;
70 status = MOD_HDCP_STATUS_INVALID_OPERATION;
75 static inline enum mod_hdcp_status check_link_integrity_dp(
76 struct mod_hdcp *hdcp)
78 return (hdcp->auth.msg.hdcp1.bstatus &
79 DP_BSTATUS_LINK_FAILURE) ?
80 MOD_HDCP_STATUS_HDCP1_LINK_INTEGRITY_FAILURE :
81 MOD_HDCP_STATUS_SUCCESS;
84 static inline enum mod_hdcp_status check_no_reauthentication_request_dp(
85 struct mod_hdcp *hdcp)
87 return (hdcp->auth.msg.hdcp1.bstatus & DP_BSTATUS_REAUTH_REQ) ?
88 MOD_HDCP_STATUS_HDCP1_REAUTH_REQUEST_ISSUED :
89 MOD_HDCP_STATUS_SUCCESS;
92 static inline enum mod_hdcp_status check_no_max_cascade(struct mod_hdcp *hdcp)
94 enum mod_hdcp_status status;
97 status = DRM_HDCP_MAX_CASCADE_EXCEEDED(hdcp->auth.msg.hdcp1.binfo_dp >> 8)
98 ? MOD_HDCP_STATUS_HDCP1_MAX_CASCADE_EXCEEDED_FAILURE
99 : MOD_HDCP_STATUS_SUCCESS;
101 status = DRM_HDCP_MAX_CASCADE_EXCEEDED(hdcp->auth.msg.hdcp1.bstatus >> 8)
102 ? MOD_HDCP_STATUS_HDCP1_MAX_CASCADE_EXCEEDED_FAILURE
103 : MOD_HDCP_STATUS_SUCCESS;
107 static inline enum mod_hdcp_status check_no_max_devs(struct mod_hdcp *hdcp)
109 enum mod_hdcp_status status;
111 if (is_dp_hdcp(hdcp))
112 status = DRM_HDCP_MAX_DEVICE_EXCEEDED(hdcp->auth.msg.hdcp1.binfo_dp) ?
113 MOD_HDCP_STATUS_HDCP1_MAX_DEVS_EXCEEDED_FAILURE :
114 MOD_HDCP_STATUS_SUCCESS;
116 status = DRM_HDCP_MAX_DEVICE_EXCEEDED(hdcp->auth.msg.hdcp1.bstatus) ?
117 MOD_HDCP_STATUS_HDCP1_MAX_DEVS_EXCEEDED_FAILURE :
118 MOD_HDCP_STATUS_SUCCESS;
122 static inline uint8_t get_device_count(struct mod_hdcp *hdcp)
124 return is_dp_hdcp(hdcp) ?
125 DRM_HDCP_NUM_DOWNSTREAM(hdcp->auth.msg.hdcp1.binfo_dp) :
126 DRM_HDCP_NUM_DOWNSTREAM(hdcp->auth.msg.hdcp1.bstatus);
129 static inline enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp)
131 /* device count must be greater than or equal to tracked hdcp displays */
132 return (get_device_count(hdcp) < get_active_display_count(hdcp)) ?
133 MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE :
134 MOD_HDCP_STATUS_SUCCESS;
137 static enum mod_hdcp_status wait_for_active_rx(struct mod_hdcp *hdcp,
138 struct mod_hdcp_event_context *event_ctx,
139 struct mod_hdcp_transition_input_hdcp1 *input)
141 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
143 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
144 event_ctx->unexpected_event = 1;
148 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bksv,
149 &input->bksv_read, &status,
152 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bcaps,
153 &input->bcaps_read, &status,
160 static enum mod_hdcp_status exchange_ksvs(struct mod_hdcp *hdcp,
161 struct mod_hdcp_event_context *event_ctx,
162 struct mod_hdcp_transition_input_hdcp1 *input)
164 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
166 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
167 event_ctx->unexpected_event = 1;
171 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_create_session,
172 &input->create_session, &status,
173 hdcp, "create_session"))
175 if (!mod_hdcp_execute_and_set(mod_hdcp_write_an,
176 &input->an_write, &status,
179 if (!mod_hdcp_execute_and_set(mod_hdcp_write_aksv,
180 &input->aksv_write, &status,
183 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bksv,
184 &input->bksv_read, &status,
187 if (!mod_hdcp_execute_and_set(validate_bksv,
188 &input->bksv_validation, &status,
189 hdcp, "bksv_validation"))
191 if (hdcp->auth.msg.hdcp1.ainfo) {
192 if (!mod_hdcp_execute_and_set(mod_hdcp_write_ainfo,
193 &input->ainfo_write, &status,
194 hdcp, "ainfo_write"))
201 static enum mod_hdcp_status computations_validate_rx_test_for_repeater(
202 struct mod_hdcp *hdcp,
203 struct mod_hdcp_event_context *event_ctx,
204 struct mod_hdcp_transition_input_hdcp1 *input)
206 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
208 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
209 event_ctx->unexpected_event = 1;
213 if (!mod_hdcp_execute_and_set(mod_hdcp_read_r0p,
214 &input->r0p_read, &status,
217 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_validate_rx,
218 &input->rx_validation, &status,
219 hdcp, "rx_validation"))
221 if (hdcp->connection.is_repeater) {
222 if (!hdcp->connection.link.adjust.hdcp1.postpone_encryption)
223 if (!mod_hdcp_execute_and_set(
224 mod_hdcp_hdcp1_enable_encryption,
225 &input->encryption, &status,
229 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_enable_encryption,
230 &input->encryption, &status,
233 if (is_dp_mst_hdcp(hdcp))
234 if (!mod_hdcp_execute_and_set(
235 mod_hdcp_hdcp1_enable_dp_stream_encryption,
236 &input->stream_encryption_dp, &status,
237 hdcp, "stream_encryption_dp"))
244 static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp,
245 struct mod_hdcp_event_context *event_ctx,
246 struct mod_hdcp_transition_input_hdcp1 *input)
248 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
250 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
251 event_ctx->unexpected_event = 1;
255 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_link_maintenance,
256 &input->link_maintenance, &status,
257 hdcp, "link_maintenance"))
263 static enum mod_hdcp_status wait_for_ready(struct mod_hdcp *hdcp,
264 struct mod_hdcp_event_context *event_ctx,
265 struct mod_hdcp_transition_input_hdcp1 *input)
267 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
269 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
270 event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
271 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
272 event_ctx->unexpected_event = 1;
276 if (is_dp_hdcp(hdcp)) {
277 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bstatus,
278 &input->bstatus_read, &status,
279 hdcp, "bstatus_read"))
281 if (!mod_hdcp_execute_and_set(check_link_integrity_dp,
282 &input->link_integrity_check, &status,
283 hdcp, "link_integrity_check"))
285 if (!mod_hdcp_execute_and_set(check_no_reauthentication_request_dp,
286 &input->reauth_request_check, &status,
287 hdcp, "reauth_request_check"))
290 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bcaps,
291 &input->bcaps_read, &status,
295 if (!mod_hdcp_execute_and_set(check_ksv_ready,
296 &input->ready_check, &status,
297 hdcp, "ready_check"))
303 static enum mod_hdcp_status read_ksv_list(struct mod_hdcp *hdcp,
304 struct mod_hdcp_event_context *event_ctx,
305 struct mod_hdcp_transition_input_hdcp1 *input)
307 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
308 uint8_t device_count;
310 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
311 event_ctx->unexpected_event = 1;
315 if (is_dp_hdcp(hdcp)) {
316 if (!mod_hdcp_execute_and_set(mod_hdcp_read_binfo,
317 &input->binfo_read_dp, &status,
318 hdcp, "binfo_read_dp"))
321 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bstatus,
322 &input->bstatus_read, &status,
323 hdcp, "bstatus_read"))
326 if (!mod_hdcp_execute_and_set(check_no_max_cascade,
327 &input->max_cascade_check, &status,
328 hdcp, "max_cascade_check"))
330 if (!mod_hdcp_execute_and_set(check_no_max_devs,
331 &input->max_devs_check, &status,
332 hdcp, "max_devs_check"))
334 if (!mod_hdcp_execute_and_set(check_device_count,
335 &input->device_count_check, &status,
336 hdcp, "device_count_check"))
338 device_count = get_device_count(hdcp);
339 hdcp->auth.msg.hdcp1.ksvlist_size = device_count*5;
340 if (!mod_hdcp_execute_and_set(mod_hdcp_read_ksvlist,
341 &input->ksvlist_read, &status,
342 hdcp, "ksvlist_read"))
344 if (!mod_hdcp_execute_and_set(mod_hdcp_read_vp,
345 &input->vp_read, &status,
348 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_validate_ksvlist_vp,
349 &input->ksvlist_vp_validation, &status,
350 hdcp, "ksvlist_vp_validation"))
352 if (input->encryption != PASS)
353 if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp1_enable_encryption,
354 &input->encryption, &status,
357 if (is_dp_mst_hdcp(hdcp))
358 if (!mod_hdcp_execute_and_set(
359 mod_hdcp_hdcp1_enable_dp_stream_encryption,
360 &input->stream_encryption_dp, &status,
361 hdcp, "stream_encryption_dp"))
367 static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp,
368 struct mod_hdcp_event_context *event_ctx,
369 struct mod_hdcp_transition_input_hdcp1 *input)
371 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
373 if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
374 event_ctx->unexpected_event = 1;
378 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bcaps,
379 &input->bcaps_read, &status,
382 if (!mod_hdcp_execute_and_set(check_hdcp_capable_dp,
383 &input->hdcp_capable_dp, &status,
384 hdcp, "hdcp_capable_dp"))
390 static enum mod_hdcp_status wait_for_r0_prime_dp(struct mod_hdcp *hdcp,
391 struct mod_hdcp_event_context *event_ctx,
392 struct mod_hdcp_transition_input_hdcp1 *input)
394 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
396 if (event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
397 event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
398 event_ctx->unexpected_event = 1;
402 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bstatus,
403 &input->bstatus_read, &status,
404 hdcp, "bstatus_read"))
406 if (!mod_hdcp_execute_and_set(check_r0p_available_dp,
407 &input->r0p_available_dp, &status,
408 hdcp, "r0p_available_dp"))
414 static enum mod_hdcp_status authenticated_dp(struct mod_hdcp *hdcp,
415 struct mod_hdcp_event_context *event_ctx,
416 struct mod_hdcp_transition_input_hdcp1 *input)
418 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
420 if (event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
421 event_ctx->unexpected_event = 1;
425 if (!mod_hdcp_execute_and_set(mod_hdcp_read_bstatus,
426 &input->bstatus_read, &status,
427 hdcp, "bstatus_read"))
429 if (!mod_hdcp_execute_and_set(check_link_integrity_dp,
430 &input->link_integrity_check, &status,
431 hdcp, "link_integrity_check"))
433 if (!mod_hdcp_execute_and_set(check_no_reauthentication_request_dp,
434 &input->reauth_request_check, &status,
435 hdcp, "reauth_request_check"))
441 uint8_t mod_hdcp_execute_and_set(
442 mod_hdcp_action func, uint8_t *flag,
443 enum mod_hdcp_status *status, struct mod_hdcp *hdcp, char *str)
445 *status = func(hdcp);
446 if (*status == MOD_HDCP_STATUS_SUCCESS && *flag != PASS) {
447 HDCP_INPUT_PASS_TRACE(hdcp, str);
449 } else if (*status != MOD_HDCP_STATUS_SUCCESS && *flag != FAIL) {
450 HDCP_INPUT_FAIL_TRACE(hdcp, str);
453 return (*status == MOD_HDCP_STATUS_SUCCESS);
456 enum mod_hdcp_status mod_hdcp_hdcp1_execution(struct mod_hdcp *hdcp,
457 struct mod_hdcp_event_context *event_ctx,
458 struct mod_hdcp_transition_input_hdcp1 *input)
460 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
462 switch (current_state(hdcp)) {
463 case H1_A0_WAIT_FOR_ACTIVE_RX:
464 status = wait_for_active_rx(hdcp, event_ctx, input);
466 case H1_A1_EXCHANGE_KSVS:
467 status = exchange_ksvs(hdcp, event_ctx, input);
469 case H1_A2_COMPUTATIONS_A3_VALIDATE_RX_A6_TEST_FOR_REPEATER:
470 status = computations_validate_rx_test_for_repeater(hdcp,
473 case H1_A45_AUTHENTICATED:
474 status = authenticated(hdcp, event_ctx, input);
476 case H1_A8_WAIT_FOR_READY:
477 status = wait_for_ready(hdcp, event_ctx, input);
479 case H1_A9_READ_KSV_LIST:
480 status = read_ksv_list(hdcp, event_ctx, input);
483 status = MOD_HDCP_STATUS_INVALID_STATE;
490 extern enum mod_hdcp_status mod_hdcp_hdcp1_dp_execution(struct mod_hdcp *hdcp,
491 struct mod_hdcp_event_context *event_ctx,
492 struct mod_hdcp_transition_input_hdcp1 *input)
494 enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
496 switch (current_state(hdcp)) {
497 case D1_A0_DETERMINE_RX_HDCP_CAPABLE:
498 status = determine_rx_hdcp_capable_dp(hdcp, event_ctx, input);
500 case D1_A1_EXCHANGE_KSVS:
501 status = exchange_ksvs(hdcp, event_ctx, input);
503 case D1_A23_WAIT_FOR_R0_PRIME:
504 status = wait_for_r0_prime_dp(hdcp, event_ctx, input);
506 case D1_A2_COMPUTATIONS_A3_VALIDATE_RX_A5_TEST_FOR_REPEATER:
507 status = computations_validate_rx_test_for_repeater(
508 hdcp, event_ctx, input);
510 case D1_A4_AUTHENTICATED:
511 status = authenticated_dp(hdcp, event_ctx, input);
513 case D1_A6_WAIT_FOR_READY:
514 status = wait_for_ready(hdcp, event_ctx, input);
516 case D1_A7_READ_KSV_LIST:
517 status = read_ksv_list(hdcp, event_ctx, input);
520 status = MOD_HDCP_STATUS_INVALID_STATE;