linux-kernel - [PATCHv7 8/9] Documentation: driver-api: add stratix10 service layer

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Date:   Wed, 18 Jul 2018 11:18:43 -0500
From:   richard.gong@...ux.intel.com
To:     gregkh@...uxfoundation.org, catalin.marinas@....com,
        will.deacon@....com, dinguyen@...nel.org, robh+dt@...nel.org,
        mark.rutland@....com, atull@...nel.org, mdf@...nel.org,
        arnd@...db.de, corbet@....net
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-fpga@...r.kernel.org,
        linux-doc@...r.kernel.org, yves.vandervennet@...ux.intel.com,
        richard.gong@...el.com
Subject: [PATCHv7 8/9] Documentation: driver-api: add stratix10 service layer

From: Richard Gong <richard.gong@...el.com>

Add new file stratix10-svc.rst
Add stratix10-svc.rst to driver-api/index.rst

Signed-off-by: Richard Gong <richard.gong@...el.com>
Signed-off-by: Alan Tull <atull@...nel.org>
---
v5: this patch is added in patch set version 5
v6: no change
v7: no change
---
 Documentation/driver-api/index.rst         |  1 +
 Documentation/driver-api/stratix10-svc.rst | 32 ++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 Documentation/driver-api/stratix10-svc.rst

diff --git a/Documentation/driver-api/index.rst b/Documentation/driver-api/index.rst
index 6d9f2f9..d4d2671 100644
--- a/Documentation/driver-api/index.rst
+++ b/Documentation/driver-api/index.rst
@@ -53,6 +53,7 @@ available subsections can be seen below.
    slimbus
    soundwire/index
    fpga/index
+   stratix10-svc
 
 .. only::  subproject and html
 
diff --git a/Documentation/driver-api/stratix10-svc.rst b/Documentation/driver-api/stratix10-svc.rst
new file mode 100644
index 0000000..ed361d8
--- /dev/null
+++ b/Documentation/driver-api/stratix10-svc.rst
@@ -0,0 +1,32 @@
+
+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/stratix10-svc-client.h
+   :functions: stratix10_svc_command_code
+
+.. kernel-doc:: include/linux/stratix10-svc-client.h
+   :functions: stratix10_svc_client_msg
+
+.. kernel-doc:: include/linux/stratix10-svc-client.h
+   :functions: stratix10_svc_command_reconfig_payload
+
+.. kernel-doc:: include/linux/stratix10-svc-client.h
+   :functions: stratix10_svc_cb_data
+
+.. kernel-doc:: include/linux/stratix10-svc-client.h
+   :functions: stratix10_svc_client
+
+.. kernel-doc:: drivers/misc/stratix10-svc.c
+   :export:
-- 
2.7.4