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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>ata_dev_classify</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="libATA Developer's Guide" /><link rel="up" href="ch04.html" title="Chapter 4. libata Library" /><link rel="prev" href="re11.html" title="ata_mode_string" /><link rel="next" href="re13.html" title="ata_id_string" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>ata_dev_classify</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re11.html">Prev</a> </td><th width="60%" align="center">Chapter 4. libata Library</th><td width="20%" align="right"> <a accesskey="n" href="re13.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="ata_dev_classify"><a id="API-ata-dev-classify"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ata_dev_classify —
determine device type based on ATA-spec signature
</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">unsigned int <b class="fsfunc">ata_dev_classify </b>(</code></td><td>const struct ata_taskfile * <var class="pdparam">tf</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2860800"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>tf</code></em></span></dt><dd><p>
ATA taskfile register set for device to be identified
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2860826"></a><h2>Description</h2><p>
Determine from taskfile register contents whether a device is
ATA or ATAPI, as per <span class="quote">“<span class="quote">Signature and persistence</span>”</span> section
of ATA/PI spec (volume 1, sect 5.14).
</p></div><div class="refsect1" title="LOCKING"><a id="id2860842"></a><h2>LOCKING</h2><p>
None.
</p></div><div class="refsect1" title="RETURNS"><a id="id2860851"></a><h2>RETURNS</h2><p>
Device type, <code class="constant">ATA_DEV_ATA</code>, <code class="constant">ATA_DEV_ATAPI</code>, <code class="constant">ATA_DEV_PMP</code> or
<code class="constant">ATA_DEV_UNKNOWN</code> the event of failure.
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