1<html><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 V1.78.1"><link rel="home" href="index.html" title="libATA Developer's Guide"><link rel="up" href="libataExt.html" title="Chapter&#160;4.&#160;libata Library"><link rel="prev" href="API-ata-mode-string.html" title="ata_mode_string"><link rel="next" href="API-ata-id-string.html" title="ata_id_string"></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">ata_dev_classify</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-ata-mode-string.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;4.&#160;libata Library</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-ata-id-string.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-ata-dev-classify"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ata_dev_classify &#8212; 
2     determine device type based on ATA-spec signature
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">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">&#160;</div></div></div><div class="refsect1"><a name="idp1123476108"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>tf</code></em></span></dt><dd><p>
4     ATA taskfile register set for device to be identified
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1123477708"></a><h2>Description</h2><p>
6   Determine from taskfile register contents whether a device is
7   ATA or ATAPI, as per <span class="quote">&#8220;<span class="quote">Signature and persistence</span>&#8221;</span> section
8   of ATA/PI spec (volume 1, sect 5.14).
9</p></div><div class="refsect1"><a name="idp1123478628"></a><h2>LOCKING</h2><p>
10   None.
11</p></div><div class="refsect1"><a name="idp1123479204"></a><h2>RETURNS</h2><p>
12   Device type, <code class="constant">ATA_DEV_ATA</code>, <code class="constant">ATA_DEV_ATAPI</code>, <code class="constant">ATA_DEV_PMP</code>,
13   <code class="constant">ATA_DEV_ZAC</code>, or <code class="constant">ATA_DEV_UNKNOWN</code> the event of failure.
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