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+++ b/Adaptation/GUID-EE50283A-543C-446F-A5D1-E64043F988ED.dita	Fri Oct 15 14:32:18 2010 +0100
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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-EE50283A-543C-446F-A5D1-E64043F988ED" xml:lang="en"><title>DMA Device Driver Guide</title><shortdesc>Explains the key concepts that the device driver creator
+needs to know before developing a device driver.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>The DMA framework bypasses the CPU for data transfers. Without
+DMA, the CPU would have to copy each piece of data from the source
+to the destination.<ul>
+<li><p><b>Device Driver:</b> A set of methods that tells the platform
+how to use a specific piece of hardware.</p></li>
+</ul><ul>
+<li><p><b>DMA Framework:</b> The DMA framework provides a simplified
+and unified access to DMA resources in a device. Generic transfer
+parameters abstract the underlying DMA hardware for basic services,
+and fine-grained control is still available for platform-specific
+features. </p></li>
+</ul><ul>
+<li><p><b>DMA Operation:</b> Before any DMA transfers can be undertaken,
+the DMA channel to be used and the source and destination addresses
+of the data to be transferred have to be specified. The transfer details
+are placed onto a queue for the DMA channel specified. The item at
+the head of the queue will be the active transfer and the rest of
+the queue will be pending transfers. </p></li>
+</ul></p>
+</conbody><related-links>
+<link href="GUID-AB5370D9-9F0B-4583-A825-11CBF7C6365C.dita"><linktext>DMA
+Tutorials Overview</linktext></link>
+<link href="GUID-EDC1C30B-4078-4434-95AC-2E37AF809A51.dita"><linktext>DMA
+Implementation Overview</linktext></link>
+<link href="GUID-4E3C086B-25BE-4DAC-9E21-CFC4F8B792A5.dita"><linktext>DMA
+Technology Guide</linktext></link>
+</related-links></concept>
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