linux-kernel - [PATCHv11 7/8] Documentation: driver-api: add stratix10 service layer

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Message-Id: <1542132846-24168-8-git-send-email-richard.gong@linux.intel.com>
Date:   Tue, 13 Nov 2018 12:14:05 -0600
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, todd.riffel@...el.com,
        richard.gong@...ux.intel.com, richard.gong@...el.com
Subject: [PATCHv11 7/8] Documentation: driver-api: add stratix10 service layer

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

Add Intel Stratix10 service layer driver document

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,
    add new file stratix10-svc.rst
    add stratix10-svc.rst to driver-api/index.rst
v6: no change
v7: no change
v8: no change
v9: no change
v10: add stratix10 service layer document to other firmware
     interface, and then remove stratix10-svc.rst file
v11: no change
---
 .../driver-api/firmware/other_interfaces.rst       | 30 ++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/Documentation/driver-api/firmware/other_interfaces.rst b/Documentation/driver-api/firmware/other_interfaces.rst
index 36c47b1..a4ac54b 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:
-- 
2.7.4