1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>pci_mmap_legacy_mem</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The Linux Kernel API"><link rel="up" href="ch09s05.html" title="PCI Support Library"><link rel="prev" href="API-pci-write-legacy-io.html" title="pci_write_legacy_io"><link rel="next" href="API-pci-mmap-legacy-io.html" title="pci_mmap_legacy_io"></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">pci_mmap_legacy_mem</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-pci-write-legacy-io.html">Prev</a>&#160;</td><th width="60%" align="center">PCI Support Library</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-pci-mmap-legacy-io.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-pci-mmap-legacy-mem"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>pci_mmap_legacy_mem &#8212; 
2     map legacy PCI memory into user memory space
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">int <b class="fsfunc">pci_mmap_legacy_mem </b>(</code></td><td>struct file * <var class="pdparam">filp</var>, </td></tr><tr><td>&#160;</td><td>struct kobject * <var class="pdparam">kobj</var>, </td></tr><tr><td>&#160;</td><td>struct bin_attribute * <var class="pdparam">attr</var>, </td></tr><tr><td>&#160;</td><td>struct vm_area_struct * <var class="pdparam">vma</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1127166532"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>filp</code></em></span></dt><dd><p>
4     open sysfs file
5    </p></dd><dt><span class="term"><em class="parameter"><code>kobj</code></em></span></dt><dd><p>
6     kobject corresponding to device to be mapped
7    </p></dd><dt><span class="term"><em class="parameter"><code>attr</code></em></span></dt><dd><p>
8     struct bin_attribute for this file
9    </p></dd><dt><span class="term"><em class="parameter"><code>vma</code></em></span></dt><dd><p>
10     struct vm_area_struct passed to mmap
11    </p></dd></dl></div></div><div class="refsect1"><a name="idp1127171252"></a><h2>Description</h2><p>
12   Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap
13   legacy memory space (first meg of bus space) into application virtual
14   memory space.
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