[PATCH] RapidIO support: core base

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>

2 files changed, 161 insertions, 1 deletions

diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index fa3e29ad8a46..7018f5c6a447 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -10,7 +10,7 @@ DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml videobook.xml \
             kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
             procfs-guide.xml writing_usb_driver.xml \
             sis900.xml kernel-api.xml journal-api.xml lsm.xml usb.xml \
-            gadget.xml libata.xml mtdnand.xml librs.xml
+            gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml
 
 ###
 # The build process is as follows (targets):
diff --git a/Documentation/DocBook/rapidio.tmpl b/Documentation/DocBook/rapidio.tmpl
new file mode 100644
index 000000000000..1becf27ba27e
--- /dev/null
+++ b/Documentation/DocBook/rapidio.tmpl
@@ -0,0 +1,160 @@
+<?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>