1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>Chapter 3. The ccwgroup bus</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="index.html" title="Writing s390 channel device drivers"><link rel="prev" href="API-cmf-readall.html" title="cmf_readall"><link rel="next" href="API-struct-ccwgroup-device.html" title="struct ccwgroup_device"></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">Chapter 3. The ccwgroup bus</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-cmf-readall.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="API-struct-ccwgroup-device.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="ccwgroup"></a>Chapter 3. The ccwgroup bus</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="sect1"><a href="ccwgroup.html#ccwgroupdevices">ccw group devices</a></span></dt></dl></div><p> 2 The ccwgroup bus only contains artificial devices, created by the user. 3 Many networking devices (e.g. qeth) are in fact composed of several 4 ccw devices (like read, write and data channel for qeth). The 5 ccwgroup bus provides a mechanism to create a meta-device which 6 contains those ccw devices as slave devices and can be associated 7 with the netdevice. 8 </p><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="ccwgroupdevices"></a>ccw group devices</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="refentrytitle"><a href="API-struct-ccwgroup-device.html"><span class="phrase">struct ccwgroup_device</span></a></span><span class="refpurpose"> — 9 ccw group device 10 </span></dt><dt><span class="refentrytitle"><a href="API-struct-ccwgroup-driver.html"><span class="phrase">struct ccwgroup_driver</span></a></span><span class="refpurpose"> — 11 driver for ccw group devices 12 </span></dt><dt><span class="refentrytitle"><a href="API-ccwgroup-set-online.html"><span class="phrase">ccwgroup_set_online</span></a></span><span class="refpurpose"> — 13 enable a ccwgroup device 14 </span></dt><dt><span class="refentrytitle"><a href="API-ccwgroup-set-offline.html"><span class="phrase">ccwgroup_set_offline</span></a></span><span class="refpurpose"> — 15 disable a ccwgroup device 16 </span></dt><dt><span class="refentrytitle"><a href="API-ccwgroup-create-dev.html"><span class="phrase">ccwgroup_create_dev</span></a></span><span class="refpurpose"> — 17 create and register a ccw group device 18 </span></dt><dt><span class="refentrytitle"><a href="API-ccwgroup-driver-register.html"><span class="phrase">ccwgroup_driver_register</span></a></span><span class="refpurpose"> — 19 register a ccw group driver 20 </span></dt><dt><span class="refentrytitle"><a href="API-ccwgroup-driver-unregister.html"><span class="phrase">ccwgroup_driver_unregister</span></a></span><span class="refpurpose"> — 21 deregister a ccw group driver 22 </span></dt><dt><span class="refentrytitle"><a href="API-ccwgroup-probe-ccwdev.html"><span class="phrase">ccwgroup_probe_ccwdev</span></a></span><span class="refpurpose"> — 23 probe function for slave devices 24 </span></dt><dt><span class="refentrytitle"><a href="API-ccwgroup-remove-ccwdev.html"><span class="phrase">ccwgroup_remove_ccwdev</span></a></span><span class="refpurpose"> — 25 remove function for slave devices 26 </span></dt></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-cmf-readall.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="API-struct-ccwgroup-device.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">cmf_readall</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">struct ccwgroup_device</span></td></tr></table></div></body></html> 27