[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.la...@amd.com>
Reviewed-by: Rodrigo Siqueira <rodrigo.sique...@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;
};
/**********************************************************/
--
2.17.1
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