1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>ata_scsi_translate</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="libataScsiInt.html" title="Chapter 6. libata SCSI translation/emulation"><link rel="prev" href="API-ata-scsi-rw-xlat.html" title="ata_scsi_rw_xlat"><link rel="next" href="API-ata-scsi-rbuf-get.html" title="ata_scsi_rbuf_get"></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_scsi_translate</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-ata-scsi-rw-xlat.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="API-ata-scsi-rbuf-get.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-ata-scsi-translate"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ata_scsi_translate — 2 Translate then issue SCSI command to ATA 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_scsi_translate </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>ata_xlat_func_t <var class="pdparam">xlat_func</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idp1124681380"></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 ATA device to which the command is addressed 5 </p></dd><dt><span class="term"><em class="parameter"><code>cmd</code></em></span></dt><dd><p> 6 SCSI command to execute 7 </p></dd><dt><span class="term"><em class="parameter"><code>xlat_func</code></em></span></dt><dd><p> 8 Actor which translates <em class="parameter"><code>cmd</code></em> to an ATA taskfile 9 </p></dd></dl></div></div><div class="refsect1"><a name="idp1124685396"></a><h2>Description</h2><p> 10 Our -><code class="function">queuecommand</code> function has decided that the SCSI 11 command issued can be directly translated into an ATA 12 command, rather than handled internally. 13 </p><p> 14 15 This function sets up an ata_queued_cmd structure for the 16 SCSI command, and sends that ata_queued_cmd to the hardware. 17 </p><p> 18 19 The xlat_func argument (actor) returns 0 if ready to execute 20 ATA command, else 1 to finish translation. If 1 is returned 21 then cmd->result (and possibly cmd->sense_buffer) are assumed 22 to be set reflecting an error condition or clean (early) 23 termination. 24</p></div><div class="refsect1"><a name="idp1124687212"></a><h2>LOCKING</h2><p> 25 spin_lock_irqsave(host lock) 26</p></div><div class="refsect1"><a name="idp1124687844"></a><h2>RETURNS</h2><p> 27 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command 28 needs to be deferred. 29</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-ata-scsi-rw-xlat.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="libataScsiInt.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-ata-scsi-rbuf-get.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">ata_scsi_rw_xlat</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">ata_scsi_rbuf_get</span></td></tr></table></div></body></html> 30