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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_scsi_qc_new</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="ch06.html" title="Chapter 6. libata SCSI translation/emulation" /><link rel="prev" href="re127.html" title="ata_task_ioctl" /><link rel="next" href="re129.html" title="ata_dump_status" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>ata_scsi_qc_new</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re127.html">Prev</a> </td><th width="60%" align="center">Chapter 6. libata SCSI translation/emulation</th><td width="20%" align="right"> <a accesskey="n" href="re129.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="ata_scsi_qc_new"><a id="API-ata-scsi-qc-new"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ata_scsi_qc_new —
acquire new ata_queued_cmd reference
</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">struct ata_queued_cmd * <b class="fsfunc">ata_scsi_qc_new </b>(</code></td><td>struct ata_device * <var class="pdparam">dev</var>, </td></tr><tr><td> </td><td>struct scsi_cmnd * <var class="pdparam">cmd</var>, </td></tr><tr><td> </td><td>void (*<var class="pdparam">done</var>)
<code>(</code>struct scsi_cmnd *<code>)</code><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2879132"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
ATA device to which the new command is attached
</p></dd><dt><span class="term"><em class="parameter"><code>cmd</code></em></span></dt><dd><p>
SCSI command that originated this ATA command
</p></dd><dt><span class="term"><em class="parameter"><code>done</code></em></span></dt><dd><p>
SCSI command completion function
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2879194"></a><h2>Description</h2><p>
Obtain a reference to an unused ata_queued_cmd structure,
which is the basic libata structure representing a single
ATA command sent to the hardware.
</p><p>
If a command was available, fill in the SCSI-specific
portions of the structure with information on the
current command.
</p></div><div class="refsect1" title="LOCKING"><a id="id2879211"></a><h2>LOCKING</h2><p>
spin_lock_irqsave(host lock)
</p></div><div class="refsect1" title="RETURNS"><a id="id2879222"></a><h2>RETURNS</h2><p>
Command allocated, or <code class="constant">NULL</code> if none available.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re127.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch06.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re129.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>ata_task_ioctl</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_dump_status</span></td></tr></table></div></body></html>
