1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>i915_dma_map_single</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="ch04s03.html#idp1128435628" title="Global GTT views"><link rel="prev" href="API-intel-lr-context-deferred-create.html" title="intel_lr_context_deferred_create"><link rel="next" href="API-alloc-pt-range.html" title="alloc_pt_range"></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">i915_dma_map_single</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-intel-lr-context-deferred-create.html">Prev</a>&#160;</td><th width="60%" align="center">Global GTT views</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-alloc-pt-range.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-i915-dma-map-single"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>i915_dma_map_single &#8212; 
2  Create a dma mapping for a page table/dir/etc.
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"> <b class="fsfunc">i915_dma_map_single </b>(</code></td><td> <var class="pdparam">px</var>, </td></tr><tr><td>&#160;</td><td> <var class="pdparam">dev</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1128446468"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>px</code></em></span></dt><dd><p>
4     Page table/dir/etc to get a DMA map for
5    </p></dd><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
6     drm device
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1128449084"></a><h2>Description</h2><p>
8   Page table allocations are unified across all gens. They always require a
9   single 4k allocation, as well as a DMA mapping. If we keep the structs
10   symmetric here, the simple macro covers us for every page table type.
11</p></div><div class="refsect1"><a name="idp1128449908"></a><h2>Return</h2><p>
12   0 if success.
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