1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>ata_dev_read_id</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="libataInt.html" title="Chapter&#160;5.&#160;libata Core Internals"><link rel="prev" href="API-ata-pio-mask-no-iordy.html" title="ata_pio_mask_no_iordy"><link rel="next" href="API-ata-dev-configure.html" title="ata_dev_configure"></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_read_id</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-ata-pio-mask-no-iordy.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;5.&#160;libata Core Internals</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-ata-dev-configure.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-ata-dev-read-id"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ata_dev_read_id &#8212; 
2     Read ID data from the specified device
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">ata_dev_read_id </b>(</code></td><td>struct ata_device * <var class="pdparam">dev</var>, </td></tr><tr><td>&#160;</td><td>unsigned int * <var class="pdparam">p_class</var>, </td></tr><tr><td>&#160;</td><td>unsigned int <var class="pdparam">flags</var>, </td></tr><tr><td>&#160;</td><td>u16 * <var class="pdparam">id</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1124106252"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
4     target device
5    </p></dd><dt><span class="term"><em class="parameter"><code>p_class</code></em></span></dt><dd><p>
6     pointer to class of the target device (may be changed)
7    </p></dd><dt><span class="term"><em class="parameter"><code>flags</code></em></span></dt><dd><p>
8     ATA_READID_* flags
9    </p></dd><dt><span class="term"><em class="parameter"><code>id</code></em></span></dt><dd><p>
10     buffer to read IDENTIFY data into
11    </p></dd></dl></div></div><div class="refsect1"><a name="idp1124110804"></a><h2>Description</h2><p>
12   Read ID data from the specified device.  ATA_CMD_ID_ATA is
13   performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI
14   devices.  This function also issues ATA_CMD_INIT_DEV_PARAMS
15   for pre-ATA4 drives.
16</p></div><div class="refsect1"><a name="idp1124111596"></a><h2>FIXME</h2><p>
17   ATA_CMD_ID_ATA is optional for early drives and right
18   now we abort if we hit that case.
19</p></div><div class="refsect1"><a name="idp1124112276"></a><h2>LOCKING</h2><p>
20   Kernel thread context (may sleep)
21</p></div><div class="refsect1"><a name="idp1124112900"></a><h2>RETURNS</h2><p>
22   0 on success, -errno otherwise.
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