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