[Why] We need to support SRM(System Renewability Message) As per hdcp spec (5.Renewability) SRM needs to be storage in a non-volatile memory.
PSP owns the checking of SRM but doesn't have the ability to store it in a non-volatile memory. So we need the kernel driver to facilitate it using the interface provided by PSP
[How] Add the interface to the header file, so the driver can use them
v2: update commit description
Signed-off-by: Bhawanpreet Lakha Bhawanpreet.Lakha@amd.com Reviewed-by: Rodrigo Siqueira Rodrigo.Siqueira@amd.com --- .../drm/amd/display/modules/hdcp/hdcp_psp.h | 26 ++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.h b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.h index 82a5e997d573..d5cb3f46606f 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.h +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.h @@ -117,6 +117,8 @@ struct ta_dtm_shared_memory { int psp_cmd_submit_buf(struct psp_context *psp, struct amdgpu_firmware_info *ucode, struct psp_gfx_cmd_resp *cmd, uint64_t fence_mc_addr);
+enum { PSP_HDCP_SRM_FIRST_GEN_MAX_SIZE = 5120 }; + enum ta_hdcp_command { TA_HDCP_COMMAND__INITIALIZE, TA_HDCP_COMMAND__HDCP1_CREATE_SESSION, @@ -134,7 +136,10 @@ enum ta_hdcp_command { TA_HDCP_COMMAND__UNUSED_3, TA_HDCP_COMMAND__HDCP2_CREATE_SESSION_V2, TA_HDCP_COMMAND__HDCP2_PREPARE_PROCESS_AUTHENTICATION_MSG_V2, - TA_HDCP_COMMAND__HDCP2_ENABLE_DP_STREAM_ENCRYPTION + TA_HDCP_COMMAND__HDCP2_ENABLE_DP_STREAM_ENCRYPTION, + TA_HDCP_COMMAND__HDCP_DESTROY_ALL_SESSIONS, + TA_HDCP_COMMAND__HDCP_SET_SRM, + TA_HDCP_COMMAND__HDCP_GET_SRM };
enum ta_hdcp2_msg_id { @@ -415,6 +420,22 @@ struct ta_hdcp_cmd_hdcp2_enable_dp_stream_encryption_input { uint32_t display_handle; };
+struct ta_hdcp_cmd_set_srm_input { + uint32_t srm_buf_size; + uint8_t srm_buf[PSP_HDCP_SRM_FIRST_GEN_MAX_SIZE]; +}; + +struct ta_hdcp_cmd_set_srm_output { + uint8_t valid_signature; + uint32_t srm_version; +}; + +struct ta_hdcp_cmd_get_srm_output { + uint32_t srm_version; + uint32_t srm_buf_size; + uint8_t srm_buf[PSP_HDCP_SRM_FIRST_GEN_MAX_SIZE]; +}; + /**********************************************************/ /* Common input structure for HDCP callbacks */ union ta_hdcp_cmd_input { @@ -432,6 +453,7 @@ union ta_hdcp_cmd_input { struct ta_hdcp_cmd_hdcp2_process_prepare_authentication_message_input_v2 hdcp2_prepare_process_authentication_message_v2; struct ta_hdcp_cmd_hdcp2_enable_dp_stream_encryption_input hdcp2_enable_dp_stream_encryption; + struct ta_hdcp_cmd_set_srm_input hdcp_set_srm; };
/* Common output structure for HDCP callbacks */ @@ -444,6 +466,8 @@ union ta_hdcp_cmd_output { struct ta_hdcp_cmd_hdcp2_create_session_output_v2 hdcp2_create_session_v2; struct ta_hdcp_cmd_hdcp2_process_prepare_authentication_message_output_v2 hdcp2_prepare_process_authentication_message_v2; + struct ta_hdcp_cmd_set_srm_output hdcp_set_srm; + struct ta_hdcp_cmd_get_srm_output hdcp_get_srm; }; /**********************************************************/