From: Ioana Radulescu <ruxandra.radulescu@xxxxxxx>
Minor cosmetic changes to the DPAA2 overview documentation file.
Add a reference to the mc-bus driver sysfs documentation.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@xxxxxxx>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@xxxxxxx>
---
drivers/staging/fsl-mc/README.txt | 33 +++++++++++++++++----------------
1 file changed, 17 insertions(+), 16 deletions(-)
diff --git a/drivers/staging/fsl-mc/README.txt b/drivers/staging/fsl-mc/README.txt
index 524eda1..0ea5cd7 100644
--- a/drivers/staging/fsl-mc/README.txt
+++ b/drivers/staging/fsl-mc/README.txt
@@ -1,7 +1,7 @@
Copyright (C) 2015 Freescale Semiconductor Inc.
-DPAA2 (Data Path Acceleration Architecture Gen2)
-------------------------------------------------
+DPAA2 (Data Path Acceleration Architecture Gen2) Overview
+---------------------------------------------------------
This document provides an overview of the Freescale DPAA2 architecture
and how it is integrated into the Linux kernel.
@@ -17,8 +17,8 @@ Contents summary
-Ethernet
-MAC
-DPAA2 Overview
---------------
+Introduction
+------------
DPAA2 is a hardware architecture designed for high-speeed network
packet processing. DPAA2 consists of sophisticated mechanisms for
@@ -35,7 +35,7 @@ network ports to create functional objects/devices such as network
interfaces, an L2 switch, or accelerator instances.
The MC provides memory-mapped I/O command interfaces (MC portals)
-which DPAA2 software drivers use to operate on DPAA2 objects:
+which DPAA2 software drivers use to operate on DPAA2 objects.
The diagram below shows an overview of the DPAA2 resource management
architecture:
@@ -130,8 +130,7 @@ in creating a network interfaces.
level.
DPRCs can be defined statically and populated with objects
- via a config file passed to the MC when firmware starts
- it.
+ via a config file passed to the MC when firmware starts it.
-DPAA2 Objects for an Ethernet Network Interface
@@ -217,8 +216,8 @@ in creating a network interfaces.
-IRQs: command completion
-commands: IRQ config, enable, reset
- Object Connections
- ------------------
+Object Connections
+------------------
Some objects have explicit relationships that must
be configured:
@@ -242,8 +241,8 @@ in creating a network interfaces.
Ethernet driver configures the DPBPs associated with
the network interface.
- Interrupts
- ----------
+Interrupts
+----------
All interrupts generated by DPAA2 objects are message
interrupts. At the hardware level message interrupts
generated by devices will normally have 3 components--
@@ -255,8 +254,8 @@ in creating a network interfaces.
For ARM-based SoC this is the same as the stream ID.
-DPAA2 Linux Driver Overview
----------------------------
+DPAA2 Linux Drivers Overview
+----------------------------
This section provides an overview of the Linux kernel drivers for
DPAA2-- 1) the bus driver and associated "DPAA2 infrastructure"
@@ -291,7 +290,7 @@ of each driver follows.
+----+--------------+ | +--+---+
| MC-bus driver | | | PHY |
| | | |driver|
- | /soc/fsl-mc | | +--+---+
+ | /bus/fsl-mc | | +--+---+
+-------------------+ | |
| |
================================ HARDWARE =========|=================|======
@@ -322,6 +321,8 @@ A brief description of each driver is provided below.
a bind of the root DPRC to the DPRC driver
The binding for the MC-bus device-tree node can be consulted here:
Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
+ The sysfs bind/unbind interfaces for the MC-bus can be consulted here:
+ Documentation/ABI/testing/sysfs-bus-fsl-mc*
DPRC driver
-----------
@@ -366,8 +367,8 @@ A brief description of each driver is provided below.
active in the kernel-- Ethernet, crypto, compression,
etc.
- Ethernet
- --------
+ Ethernet driver
+ ---------------
The Ethernet driver is bound to a DPNI and implements the kernel
interfaces needed to connect the DPAA2 network interface to
the network stack.
--
2.7.4
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