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Adds a RapidIO subsystem to the kernel. RIO is a switched fabric interconnect used in higher-end embedded applications. The curious can look at the specs over at http://www.rapidio.org The core code implements enumeration/discovery, management of devices/resources, and interfaces for RIO drivers. There's a lot more to do to take advantages of all the hardware features. However, this should provide a good base for folks with RIO hardware to start contributing. Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
161 lines
4.4 KiB
XML
161 lines
4.4 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
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<!ENTITY rapidio SYSTEM "rapidio.xml">
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]>
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<book id="RapidIO-Guide">
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<bookinfo>
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<title>RapidIO Subsystem Guide</title>
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<authorgroup>
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<author>
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<firstname>Matt</firstname>
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<surname>Porter</surname>
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<affiliation>
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<address>
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<email>mporter@kernel.crashing.org</email>
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<email>mporter@mvista.com</email>
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</address>
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</affiliation>
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</author>
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</authorgroup>
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<copyright>
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<year>2005</year>
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<holder>MontaVista Software, Inc.</holder>
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</copyright>
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<legalnotice>
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<para>
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This documentation is free software; you can redistribute
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it and/or modify it under the terms of the GNU General Public
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License version 2 as published by the Free Software Foundation.
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</para>
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<para>
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This program is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied
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warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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</para>
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<para>
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You should have received a copy of the GNU General Public
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License along with this program; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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MA 02111-1307 USA
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</para>
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<para>
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For more details see the file COPYING in the source
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distribution of Linux.
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</para>
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</legalnotice>
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</bookinfo>
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<toc></toc>
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<chapter id="intro">
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<title>Introduction</title>
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<para>
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RapidIO is a high speed switched fabric interconnect with
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features aimed at the embedded market. RapidIO provides
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support for memory-mapped I/O as well as message-based
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transactions over the switched fabric network. RapidIO has
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a standardized discovery mechanism not unlike the PCI bus
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standard that allows simple detection of devices in a
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network.
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</para>
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<para>
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This documentation is provided for developers intending
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to support RapidIO on new architectures, write new drivers,
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or to understand the subsystem internals.
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</para>
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</chapter>
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<chapter id="bugs">
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<title>Known Bugs and Limitations</title>
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<sect1>
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<title>Bugs</title>
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<para>None. ;)</para>
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</sect1>
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<sect1>
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<title>Limitations</title>
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<para>
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<orderedlist>
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<listitem><para>Access/management of RapidIO memory regions is not supported</para></listitem>
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<listitem><para>Multiple host enumeration is not supported</para></listitem>
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</orderedlist>
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</para>
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</sect1>
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</chapter>
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<chapter id="drivers">
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<title>RapidIO driver interface</title>
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<para>
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Drivers are provided a set of calls in order
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to interface with the subsystem to gather info
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on devices, request/map memory region resources,
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and manage mailboxes/doorbells.
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</para>
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<sect1>
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<title>Functions</title>
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!Iinclude/linux/rio_drv.h
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!Edrivers/rapidio/rio-driver.c
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!Edrivers/rapidio/rio.c
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</sect1>
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</chapter>
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<chapter id="internals">
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<title>Internals</title>
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<para>
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This chapter contains the autogenerated documentation of the RapidIO
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subsystem.
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</para>
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<sect1><title>Structures</title>
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!Iinclude/linux/rio.h
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</sect1>
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<sect1><title>Enumeration and Discovery</title>
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!Idrivers/rapidio/rio-scan.c
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</sect1>
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<sect1><title>Driver functionality</title>
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!Idrivers/rapidio/rio.c
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!Idrivers/rapidio/rio-access.c
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</sect1>
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<sect1><title>Device model support</title>
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!Idrivers/rapidio/rio-driver.c
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</sect1>
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<sect1><title>Sysfs support</title>
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!Idrivers/rapidio/rio-sysfs.c
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</sect1>
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<sect1><title>PPC32 support</title>
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!Iarch/ppc/kernel/rio.c
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!Earch/ppc/syslib/ppc85xx_rio.c
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!Iarch/ppc/syslib/ppc85xx_rio.c
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</sect1>
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</chapter>
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<chapter id="credits">
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<title>Credits</title>
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<para>
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The following people have contributed to the RapidIO
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subsystem directly or indirectly:
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<orderedlist>
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<listitem><para>Matt Porter<email>mporter@kernel.crashing.org</email></para></listitem>
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<listitem><para>Randy Vinson<email>rvinson@mvista.com</email></para></listitem>
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<listitem><para>Dan Malek<email>dan@embeddedalley.com</email></para></listitem>
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</orderedlist>
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</para>
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<para>
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The following people have contributed to this document:
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<orderedlist>
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<listitem><para>Matt Porter<email>mporter@kernel.crashing.org</email></para></listitem>
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</orderedlist>
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</para>
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</chapter>
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</book>
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