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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR03MB2362 X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, robh@kernel.org, stuyoder@gmail.com, arnd@arndb.de, marc.zyngier@arm.com, roy.pledge@nxp.com, ioana.ciornei@nxp.com, linux-kernel@vger.kernel.org, horia.geanta@nxp.com, nipun.gupta@nxp.com, tglx@linutronix.de, bogdan.purcareata@nxp.com, linux-arm-kernel@lists.infradead.org, jason@lakedaemon.net Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ioana Radulescu Minor cosmetic changes to the DPAA2 overview documentation file. Add a reference to the mc-bus driver sysfs documentation. Signed-off-by: Ioana Radulescu Reviewed-by: Laurentiu Tudor --- 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.