1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>struct ciw</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Writing s390 channel device drivers"><link rel="up" href="ccw.html#channelIO" title="I/O functions for channel-attached devices"><link rel="prev" href="API-struct-irb.html" title="struct irb"><link rel="next" href="API-struct-ccw-dev-id.html" title="struct ccw_dev_id"></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">struct ciw</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-struct-irb.html">Prev</a>&#160;</td><th width="60%" align="center">I/O functions for channel-attached devices</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-struct-ccw-dev-id.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-struct-ciw"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>struct ciw &#8212; 
2     command information word (CIW) layout
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
4struct ciw {
5  __u32 et:2;
6  __u32 reserved:2;
7  __u32 ct:4;
8  __u32 cmd:8;
9  __u32 count:16;
10};  </pre></div><div class="refsect1"><a name="idp1124118852"></a><h2>Members</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term">et</span></dt><dd><p>
11   entry type
12      </p></dd><dt><span class="term">reserved</span></dt><dd><p>
13   reserved bits
14      </p></dd><dt><span class="term">ct</span></dt><dd><p>
15   command type
16      </p></dd><dt><span class="term">cmd</span></dt><dd><p>
17   command code
18      </p></dd><dt><span class="term">count</span></dt><dd><p>
19   command count
20      </p></dd></dl></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-struct-irb.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ccw.html#channelIO">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-struct-ccw-dev-id.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">struct irb</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">struct ccw_dev_id</span></td></tr></table></div></body></html>
21