Commit 0d5c06aa authored by Richard Gong's avatar Richard Gong Committed by Greg Kroah-Hartman

Documentation: driver-api: add stratix10 service layer

Add Intel Stratix10 service layer driver document
Signed-off-by: default avatarRichard Gong <richard.gong@intel.com>
Signed-off-by: default avatarAlan Tull <atull@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e7eef1d7
......@@ -13,3 +13,33 @@ EDD Interfaces
.. kernel-doc:: drivers/firmware/edd.c
:internal:
Intel Stratix10 SoC Service Layer
---------------------------------
Some features of the Intel Stratix10 SoC require a level of privilege
higher than the kernel is granted. Such secure features include
FPGA programming. In terms of the ARMv8 architecture, the kernel runs
at Exception Level 1 (EL1), access to the features requires
Exception Level 3 (EL3).
The Intel Stratix10 SoC service layer provides an in kernel API for
drivers to request access to the secure features. The requests are queued
and processed one by one. ARM’s SMCCC is used to pass the execution
of the requests on to a secure monitor (EL3).
.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h
:functions: stratix10_svc_command_code
.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h
:functions: stratix10_svc_client_msg
.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h
:functions: stratix10_svc_command_reconfig_payload
.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h
:functions: stratix10_svc_cb_data
.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h
:functions: stratix10_svc_client
.. kernel-doc:: drivers/firmware/stratix10-svc.c
:export:
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