<?xml version="1.0" encoding="ANSI_X3.4-1968" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>snd_dma_alloc_pages</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Linux Device Drivers" /><link rel="up" href="ch05.html" title="Chapter 5. Sound Devices" /><link rel="prev" href="re653.html" title="snd_free_pages" /><link rel="next" href="re655.html" title="snd_dma_alloc_pages_fallback" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>snd_dma_alloc_pages</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re653.html">Prev</a> </td><th width="60%" align="center">Chapter 5. Sound Devices</th><td width="20%" align="right"> <a accesskey="n" href="re655.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="snd_dma_alloc_pages"><a id="API-snd-dma-alloc-pages"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>snd_dma_alloc_pages —
allocate the buffer area according to the given type
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">int <b class="fsfunc">snd_dma_alloc_pages </b>(</code></td><td>int <var class="pdparam">type</var>, </td></tr><tr><td> </td><td>struct device * <var class="pdparam">device</var>, </td></tr><tr><td> </td><td>size_t <var class="pdparam">size</var>, </td></tr><tr><td> </td><td>struct snd_dma_buffer * <var class="pdparam">dmab</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id3121275"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>type</code></em></span></dt><dd><p>
the DMA buffer type
</p></dd><dt><span class="term"><em class="parameter"><code>device</code></em></span></dt><dd><p>
the device pointer
</p></dd><dt><span class="term"><em class="parameter"><code>size</code></em></span></dt><dd><p>
the buffer size to allocate
</p></dd><dt><span class="term"><em class="parameter"><code>dmab</code></em></span></dt><dd><p>
buffer allocation record to store the allocated data
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id3121354"></a><h2>Description</h2><p>
Calls the memory-allocator function for the corresponding
buffer type.
</p><p>
Returns zero if the buffer with the given size is allocated successfuly,
other a negative value at error.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re653.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch05.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re655.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>snd_free_pages</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>snd_dma_alloc_pages_fallback</span></td></tr></table></div></body></html>
