1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>phys_to_virt</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Bus-Independent Device Accesses"><link rel="up" href="pubfunctions.html" title="Chapter&#160;5.&#160;Public Functions Provided"><link rel="prev" href="API-virt-to-phys.html" title="virt_to_phys"><link rel="next" href="API-ioremap-nocache.html" title="ioremap_nocache"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">phys_to_virt</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-virt-to-phys.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;5.&#160;Public Functions Provided</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-ioremap-nocache.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-phys-to-virt"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>phys_to_virt &#8212; 
2     map physical address to virtual
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void * <b class="fsfunc">phys_to_virt </b>(</code></td><td>phys_addr_t <var class="pdparam">address</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1109460124"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>address</code></em></span></dt><dd><p>
4     address to remap
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1109461700"></a><h2>Description</h2><p>
6   The returned virtual address is a current CPU mapping for
7   the memory address given. It is only valid to use this function on
8   addresses that have a kernel mapping
9   </p><p>
10
11   This function does not handle bus mappings for DMA transfers. In
12   almost all conceivable cases a device driver should not be using
13   this function
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15