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

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

Documentation/driver-api/firmware/other_interfaces.rst

+30 −0
Original line number Diff line number Diff line
@@ -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:

CRA Git | Maintained and supported by SUSTech CRA and CCSE