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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>superhyway_add_device</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="SuperH Interfaces Guide" /><link rel="up" href="ch04.html#superhyway" title="SuperHyway" /><link rel="prev" href="ch04.html" title="Chapter 4. Busses" /><link rel="next" href="re20.html" title="superhyway_register_driver" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>superhyway_add_device</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch04.html">Prev</a> </td><th width="60%" align="center">SuperHyway</th><td width="20%" align="right"> <a accesskey="n" href="re20.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="superhyway_add_device"><a id="API-superhyway-add-device"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>superhyway_add_device —
Add a SuperHyway module
</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">int <b class="fsfunc">superhyway_add_device </b>(</code></td><td>unsigned long <var class="pdparam">base</var>, </td></tr><tr><td> </td><td>struct superhyway_device * <var class="pdparam">sdev</var>, </td></tr><tr><td> </td><td>struct superhyway_bus * <var class="pdparam">bus</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2678212"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>base</code></em></span></dt><dd><p>
Physical address where module is mapped.
</p></dd><dt><span class="term"><em class="parameter"><code>sdev</code></em></span></dt><dd><p>
SuperHyway device to add, or NULL to allocate a new one.
</p></dd><dt><span class="term"><em class="parameter"><code>bus</code></em></span></dt><dd><p>
Bus where SuperHyway module resides.
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2678273"></a><h2>Description</h2><p>
This is responsible for adding a new SuperHyway module. This sets up a new
struct superhyway_device for the module being added if <em class="parameter"><code>sdev</code></em> == NULL.
</p><p>
Devices are initially added in the order that they are scanned (from the
top-down of the memory map), and are assigned an ID based on the order that
they are added. Any manual addition of a module will thus get the ID after
the devices already discovered regardless of where it resides in memory.
</p><p>
Further work can and should be done in <code class="function">superhyway_scan_bus</code>, to be sure
that any new modules are properly discovered and subsequently registered.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch04.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch04.html#superhyway">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re20.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 4. Busses </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>superhyway_register_driver</span></td></tr></table></div></body></html>
