modules/hdcp/hdcp1_execution.c

26 #include "hdcp.h"
28 static inline enum mod_hdcp_status validate_bksv(struct mod_hdcp *hdcp)
34 	memcpy(bksv, hdcp->auth.msg.hdcp1.bksv, sizeof(hdcp->auth.msg.hdcp1.bksv));
45 static inline enum mod_hdcp_status check_ksv_ready(struct mod_hdcp *hdcp)
47 	if (is_dp_hdcp(hdcp))
48 		return (hdcp->auth.msg.hdcp1.bstatus & DP_BSTATUS_READY) ?
51 	return (hdcp->auth.msg.hdcp1.bcaps & DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY) ?
56 static inline enum mod_hdcp_status check_hdcp_capable_dp(struct mod_hdcp *hdcp)
58 	return (hdcp->auth.msg.hdcp1.bcaps & DP_BCAPS_HDCP_CAPABLE) ?
63 static inline enum mod_hdcp_status check_r0p_available_dp(struct mod_hdcp *hdcp)
67 	if (is_dp_hdcp(hdcp)) {
68 		status = (hdcp->auth.msg.hdcp1.bstatus &
79 		struct mod_hdcp *hdcp)
81 	return (hdcp->auth.msg.hdcp1.bstatus &
88 		struct mod_hdcp *hdcp)
90 	return (hdcp->auth.msg.hdcp1.bstatus & DP_BSTATUS_REAUTH_REQ) ?
95 static inline enum mod_hdcp_status check_no_max_cascade(struct mod_hdcp *hdcp)
99 	if (is_dp_hdcp(hdcp))
100 		status = DRM_HDCP_MAX_CASCADE_EXCEEDED(hdcp->auth.msg.hdcp1.binfo_dp >> 8)
104 		status = DRM_HDCP_MAX_CASCADE_EXCEEDED(hdcp->auth.msg.hdcp1.bstatus >> 8)
110 static inline enum mod_hdcp_status check_no_max_devs(struct mod_hdcp *hdcp)
114 	if (is_dp_hdcp(hdcp))
115 		status = DRM_HDCP_MAX_DEVICE_EXCEEDED(hdcp->auth.msg.hdcp1.binfo_dp) ?
119 		status = DRM_HDCP_MAX_DEVICE_EXCEEDED(hdcp->auth.msg.hdcp1.bstatus) ?
125 static inline uint8_t get_device_count(struct mod_hdcp *hdcp)
127 	return is_dp_hdcp(hdcp) ?
128 			DRM_HDCP_NUM_DOWNSTREAM(hdcp->auth.msg.hdcp1.binfo_dp) :
129 			DRM_HDCP_NUM_DOWNSTREAM(hdcp->auth.msg.hdcp1.bstatus);
132 static inline enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp)
135 	if (get_device_count(hdcp) == 0)
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.
143 	return ((1 + get_device_count(hdcp)) < get_active_display_count(hdcp)) ?
148 static enum mod_hdcp_status wait_for_active_rx(struct mod_hdcp *hdcp,
161 			hdcp, "bksv_read"))
165 			hdcp, "bcaps_read"))
171 static enum mod_hdcp_status exchange_ksvs(struct mod_hdcp *hdcp,
184 			hdcp, "create_session"))
188 			hdcp, "an_write"))
192 			hdcp, "aksv_write"))
196 			hdcp, "bksv_read"))
200 			hdcp, "bksv_validation"))
202 	if (hdcp->auth.msg.hdcp1.ainfo) {
205 				hdcp, "ainfo_write"))
213 		struct mod_hdcp *hdcp,
226 			hdcp, "r0p_read"))
230 			hdcp, "rx_validation"))
232 	if (hdcp->connection.is_repeater) {
233 		if (!hdcp->connection.link.adjust.hdcp1.postpone_encryption)
237 					hdcp, "encryption"))
242 				hdcp, "encryption"))
244 		if (is_dp_mst_hdcp(hdcp))
248 					hdcp, "stream_encryption_dp"))
255 static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp,
268 			hdcp, "link_maintenance");
273 static enum mod_hdcp_status wait_for_ready(struct mod_hdcp *hdcp,
286 	if (is_dp_hdcp(hdcp)) {
289 				hdcp, "bstatus_read"))
293 				hdcp, "link_integrity_check"))
297 				hdcp, "reauth_request_check"))
302 				hdcp, "bcaps_read"))
307 			hdcp, "ready_check"))
313 static enum mod_hdcp_status read_ksv_list(struct mod_hdcp *hdcp,
325 	if (is_dp_hdcp(hdcp)) {
328 				hdcp, "binfo_read_dp"))
333 				hdcp, "bstatus_read"))
338 			hdcp, "max_cascade_check"))
342 			hdcp, "max_devs_check"))
346 			hdcp, "device_count_check"))
348 	device_count = get_device_count(hdcp);
349 	hdcp->auth.msg.hdcp1.ksvlist_size = device_count*5;
352 			hdcp, "ksvlist_read"))
356 			hdcp, "vp_read"))
360 			hdcp, "ksvlist_vp_validation"))
365 				hdcp, "encryption"))
367 	if (is_dp_mst_hdcp(hdcp))
371 				hdcp, "stream_encryption_dp"))
377 static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp,
390 			hdcp, "bcaps_read"))
394 			hdcp, "hdcp_capable_dp"))
400 static enum mod_hdcp_status wait_for_r0_prime_dp(struct mod_hdcp *hdcp,
414 			hdcp, "bstatus_read"))
418 			hdcp, "r0p_available_dp"))
424 static enum mod_hdcp_status authenticated_dp(struct mod_hdcp *hdcp,
438 				hdcp, "bstatus_read");
442 				hdcp, "link_integrity_check");
446 				hdcp, "reauth_request_check");
453 		enum mod_hdcp_status *status, struct mod_hdcp *hdcp, char *str)
455 	*status = func(hdcp);
457 		HDCP_INPUT_PASS_TRACE(hdcp, str);
460 		HDCP_INPUT_FAIL_TRACE(hdcp, str);
466 enum mod_hdcp_status mod_hdcp_hdcp1_execution(struct mod_hdcp *hdcp,
472 	switch (current_state(hdcp)) {
474 		status = wait_for_active_rx(hdcp, event_ctx, input);
477 		status = exchange_ksvs(hdcp, event_ctx, input);
480 		status = computations_validate_rx_test_for_repeater(hdcp,
484 		status = authenticated(hdcp, event_ctx, input);
487 		status = wait_for_ready(hdcp, event_ctx, input);
490 		status = read_ksv_list(hdcp, event_ctx, input);
500 enum mod_hdcp_status mod_hdcp_hdcp1_dp_execution(struct mod_hdcp *hdcp,
506 	switch (current_state(hdcp)) {
508 		status = determine_rx_hdcp_capable_dp(hdcp, event_ctx, input);
511 		status = exchange_ksvs(hdcp, event_ctx, input);
514 		status = wait_for_r0_prime_dp(hdcp, event_ctx, input);
518 				hdcp, event_ctx, input);
521 		status = authenticated_dp(hdcp, event_ctx, input);
524 		status = wait_for_ready(hdcp, event_ctx, input);
527 		status = read_ksv_list(hdcp, event_ctx, input);