diff options
| author | Wenjing Liu <Wenjing.Liu@amd.com> | 2019-10-17 11:13:29 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-02-12 16:01:38 -0500 |
| commit | 3744ee2c2901656455bbd2af658ab9b673ca5d1d (patch) | |
| tree | 49085df4115fd3b524da7e670ea8e67f1c1c5ae7 /drivers/gpu/drm/amd/display | |
| parent | c17f7220f5a646e5808632b9857387c1b7261f93 (diff) | |
drm/amd/display: no hdcp retry if bksv or ksv list is revoked
[why]
According to the specs when bksv or ksv list fails SRM check,
HDCP TX should abort hdcp immediately.
However with the current code HDCP will be reattampt upto 4 times.
[how]
Add the logic that stop HDCP retry if bksv or ksv list
is revoked.
Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display')
5 files changed, 13 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c index 8aa528e874c4..a7d24734c7cd 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c @@ -61,7 +61,8 @@ static uint8_t is_cp_desired_hdcp1(struct mod_hdcp *hdcp) return (hdcp->connection.hdcp1_retry_count < MAX_NUM_OF_ATTEMPTS) && is_auth_needed && - !hdcp->connection.link.adjust.hdcp1.disable; + !hdcp->connection.link.adjust.hdcp1.disable && + !hdcp->connection.is_hdcp1_revoked; } static uint8_t is_cp_desired_hdcp2(struct mod_hdcp *hdcp) diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h index af78e4f1be68..4d717ec8f14b 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h @@ -170,6 +170,7 @@ struct mod_hdcp_connection { struct mod_hdcp_display displays[MAX_NUM_OF_DISPLAYS]; uint8_t is_repeater; uint8_t is_km_stored; + uint8_t is_hdcp1_revoked; uint8_t is_hdcp2_revoked; struct mod_hdcp_trace trace; uint8_t hdcp1_retry_count; diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_transition.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_transition.c index 76edcbe51f71..d66a9f954ade 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_transition.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_transition.c @@ -210,7 +210,8 @@ enum mod_hdcp_status mod_hdcp_hdcp1_dp_transition(struct mod_hdcp *hdcp, fail_and_restart_in_ms(0, &status, output); break; } else if (input->rx_validation != PASS) { - if (hdcp->state.stay_count < 2) { + if (hdcp->state.stay_count < 2 && + !hdcp->connection.is_hdcp1_revoked) { /* allow 2 additional retries */ callback_in_ms(0, output); increment_stay_counter(hdcp); @@ -290,7 +291,8 @@ enum mod_hdcp_status mod_hdcp_hdcp1_dp_transition(struct mod_hdcp *hdcp, fail_and_restart_in_ms(0, &status, output); break; } else if (input->ksvlist_vp_validation != PASS) { - if (hdcp->state.stay_count < 2) { + if (hdcp->state.stay_count < 2 && + !hdcp->connection.is_hdcp1_revoked) { /* allow 2 additional retries */ callback_in_ms(0, output); increment_stay_counter(hdcp); diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_log.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_log.c index 724ebcee9a19..44956f9ba178 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_log.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_log.c @@ -90,10 +90,14 @@ char *mod_hdcp_status_to_str(int32_t status) return "MOD_HDCP_STATUS_HDCP1_R0_PRIME_PENDING"; case MOD_HDCP_STATUS_HDCP1_VALIDATE_RX_FAILURE: return "MOD_HDCP_STATUS_HDCP1_VALIDATE_RX_FAILURE"; + case MOD_HDCP_STATUS_HDCP1_BKSV_REVOKED: + return "MOD_HDCP_STATUS_HDCP1_BKSV_REVOKED"; case MOD_HDCP_STATUS_HDCP1_KSV_LIST_NOT_READY: return "MOD_HDCP_STATUS_HDCP1_KSV_LIST_NOT_READY"; case MOD_HDCP_STATUS_HDCP1_VALIDATE_KSV_LIST_FAILURE: return "MOD_HDCP_STATUS_HDCP1_VALIDATE_KSV_LIST_FAILURE"; + case MOD_HDCP_STATUS_HDCP1_KSV_LIST_REVOKED: + return "MOD_HDCP_STATUS_HDCP1_KSV_LIST_REVOKED"; case MOD_HDCP_STATUS_HDCP1_ENABLE_ENCRYPTION: return "MOD_HDCP_STATUS_HDCP1_ENABLE_ENCRYPTION"; case MOD_HDCP_STATUS_HDCP1_ENABLE_STREAM_ENCRYPTION_FAILURE: diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h index f2a0e1a064da..891bca555e17 100644 --- a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h +++ b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h @@ -56,8 +56,10 @@ enum mod_hdcp_status { MOD_HDCP_STATUS_HDCP1_NOT_CAPABLE, MOD_HDCP_STATUS_HDCP1_R0_PRIME_PENDING, MOD_HDCP_STATUS_HDCP1_VALIDATE_RX_FAILURE, + MOD_HDCP_STATUS_HDCP1_BKSV_REVOKED, MOD_HDCP_STATUS_HDCP1_KSV_LIST_NOT_READY, MOD_HDCP_STATUS_HDCP1_VALIDATE_KSV_LIST_FAILURE, + MOD_HDCP_STATUS_HDCP1_KSV_LIST_REVOKED, MOD_HDCP_STATUS_HDCP1_ENABLE_ENCRYPTION, MOD_HDCP_STATUS_HDCP1_ENABLE_STREAM_ENCRYPTION_FAILURE, MOD_HDCP_STATUS_HDCP1_MAX_CASCADE_EXCEEDED_FAILURE, |