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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_read_id</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="ch05.html" title="Chapter 5. libata Core Internals" /><link rel="prev" href="re78.html" title="ata_pio_mask_no_iordy" /><link rel="next" href="re80.html" title="ata_dev_configure" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>ata_dev_read_id</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re78.html">Prev</a> </td><th width="60%" align="center">Chapter 5. libata Core Internals</th><td width="20%" align="right"> <a accesskey="n" href="re80.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="ata_dev_read_id"><a id="API-ata-dev-read-id"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ata_dev_read_id —
Read ID data from the specified device
</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">ata_dev_read_id </b>(</code></td><td>struct ata_device * <var class="pdparam">dev</var>, </td></tr><tr><td> </td><td>unsigned int * <var class="pdparam">p_class</var>, </td></tr><tr><td> </td><td>unsigned int <var class="pdparam">flags</var>, </td></tr><tr><td> </td><td>u16 * <var class="pdparam">id</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2871517"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
target device
</p></dd><dt><span class="term"><em class="parameter"><code>p_class</code></em></span></dt><dd><p>
pointer to class of the target device (may be changed)
</p></dd><dt><span class="term"><em class="parameter"><code>flags</code></em></span></dt><dd><p>
ATA_READID_* flags
</p></dd><dt><span class="term"><em class="parameter"><code>id</code></em></span></dt><dd><p>
buffer to read IDENTIFY data into
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2871593"></a><h2>Description</h2><p>
Read ID data from the specified device. ATA_CMD_ID_ATA is
performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI
devices. This function also issues ATA_CMD_INIT_DEV_PARAMS
for pre-ATA4 drives.
</p></div><div class="refsect1" title="FIXME"><a id="id2871606"></a><h2>FIXME</h2><p>
ATA_CMD_ID_ATA is optional for early drives and right
now we abort if we hit that case.
</p></div><div class="refsect1" title="LOCKING"><a id="id2871617"></a><h2>LOCKING</h2><p>
Kernel thread context (may sleep)
</p></div><div class="refsect1" title="RETURNS"><a id="id2871628"></a><h2>RETURNS</h2><p>
0 on success, -errno otherwise.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re78.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="re80.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>ata_pio_mask_no_iordy</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>ata_dev_configure</span></td></tr></table></div></body></html>
