1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>spi_populate_tag_msg</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="SCSI Interfaces Guide"><link rel="up" href="Transport_classes.html#SPI_transport" title="Parallel SCSI (SPI) transport class"><link rel="prev" href="API-spi-display-xfer-agreement.html" title="spi_display_xfer_agreement"><link rel="next" href="API-srp-tmo-valid.html" title="srp_tmo_valid"></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">spi_populate_tag_msg</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-spi-display-xfer-agreement.html">Prev</a>&#160;</td><th width="60%" align="center">Parallel SCSI (SPI) transport class</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-srp-tmo-valid.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-spi-populate-tag-msg"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>spi_populate_tag_msg &#8212; 
2     place a tag message in a buffer
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">spi_populate_tag_msg </b>(</code></td><td>unsigned char * <var class="pdparam">msg</var>, </td></tr><tr><td>&#160;</td><td>struct scsi_cmnd * <var class="pdparam">cmd</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1124809444"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>msg</code></em></span></dt><dd><p>
4     pointer to the area to place the tag
5    </p></dd><dt><span class="term"><em class="parameter"><code>cmd</code></em></span></dt><dd><p>
6     pointer to the scsi command for the tag
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1124812084"></a><h2>Notes</h2><p>
8   designed to create the correct type of tag message for the 
9   particular request.  Returns the size of the tag message.
10   May return 0 if TCQ is disabled for this device.
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