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| author | Richard Gong <richard.gong@intel.com> | 2018-11-13 12:14:05 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-11-26 20:15:07 +0100 |
| commit | 0d5c06aa0ee8ba36e9c4a3ae7a3a3377c105b412 (patch) | |
| tree | de5ac2a69d51269d71e60c5be82f9e9b265aed41 /Documentation/driver-api | |
| parent | e7eef1d7633a875977705d203e6f651893582374 (diff) | |
| download | linux-0d5c06aa0ee8ba36e9c4a3ae7a3a3377c105b412.tar.bz2 | |
Documentation: driver-api: add stratix10 service layer
Add Intel Stratix10 service layer driver document
Signed-off-by: Richard Gong <richard.gong@intel.com>
Signed-off-by: Alan Tull <atull@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/driver-api')
| -rw-r--r-- | Documentation/driver-api/firmware/other_interfaces.rst | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/driver-api/firmware/other_interfaces.rst b/Documentation/driver-api/firmware/other_interfaces.rst index 36c47b1e9824..a4ac54b5fd79 100644 --- a/Documentation/driver-api/firmware/other_interfaces.rst +++ b/Documentation/driver-api/firmware/other_interfaces.rst @@ -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: |