1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>drm_prime_sg_to_page_addr_arrays</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux DRM Developer's Guide"><link rel="up" href="drm-memory-management.html#idp1122911796" title="PRIME Function References"><link rel="prev" href="API-drm-prime-pages-to-sg.html" title="drm_prime_pages_to_sg"><link rel="next" href="API-drm-prime-gem-destroy.html" title="drm_prime_gem_destroy"></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">drm_prime_sg_to_page_addr_arrays</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-drm-prime-pages-to-sg.html">Prev</a>&#160;</td><th width="60%" align="center">PRIME Function References</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-drm-prime-gem-destroy.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-drm-prime-sg-to-page-addr-arrays"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>drm_prime_sg_to_page_addr_arrays &#8212; 
2     convert an sg table into a page array
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">drm_prime_sg_to_page_addr_arrays </b>(</code></td><td>struct sg_table * <var class="pdparam">sgt</var>, </td></tr><tr><td>&#160;</td><td>struct page ** <var class="pdparam">pages</var>, </td></tr><tr><td>&#160;</td><td>dma_addr_t * <var class="pdparam">addrs</var>, </td></tr><tr><td>&#160;</td><td>int <var class="pdparam">max_pages</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1122974044"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>sgt</code></em></span></dt><dd><p>
4     scatter-gather table to convert
5    </p></dd><dt><span class="term"><em class="parameter"><code>pages</code></em></span></dt><dd><p>
6     array of page pointers to store the page array in
7    </p></dd><dt><span class="term"><em class="parameter"><code>addrs</code></em></span></dt><dd><p>
8     optional array to store the dma bus address of each page
9    </p></dd><dt><span class="term"><em class="parameter"><code>max_pages</code></em></span></dt><dd><p>
10     size of both the passed-in arrays
11    </p></dd></dl></div></div><div class="refsect1"><a name="idp1122978628"></a><h2>Description</h2><p>
12   Exports an sg table into an array of pages and addresses. This is currently
13   required by the TTM driver in order to do correct fault handling.
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