<?xml version="1.0" encoding="ANSI_X3.4-1968" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>rio_sport_is_active</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="RapidIO Subsystem Guide" /><link rel="up" href="ch04s02.html" title="Enumeration and Discovery" /><link rel="prev" href="re58.html" title="rio_setup_device" /><link rel="next" href="re60.html" title="rio_route_add_entry" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>rio_sport_is_active</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re58.html">Prev</a> </td><th width="60%" align="center">Enumeration and Discovery</th><td width="20%" align="right"> <a accesskey="n" href="re60.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="rio_sport_is_active"><a id="API-rio-sport-is-active"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>rio_sport_is_active — Tests if a switch port has an active connection. </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">rio_sport_is_active </b>(</code></td><td>struct rio_mport * <var class="pdparam">port</var>, </td></tr><tr><td> </td><td>u16 <var class="pdparam">destid</var>, </td></tr><tr><td> </td><td>u8 <var class="pdparam">hopcount</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">sport</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2854839"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>port</code></em></span></dt><dd><p> Master port to send transaction </p></dd><dt><span class="term"><em class="parameter"><code>destid</code></em></span></dt><dd><p> Associated destination ID for switch </p></dd><dt><span class="term"><em class="parameter"><code>hopcount</code></em></span></dt><dd><p> Hopcount to reach switch </p></dd><dt><span class="term"><em class="parameter"><code>sport</code></em></span></dt><dd><p> Switch port number </p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2854915"></a><h2>Description</h2><p> Reads the port error status CSR for a particular switch port to determine if the port has an active link. Returns <code class="constant">PORT_N_ERR_STS_PORT_OK</code> if the port is active or <code class="constant">0</code> if it is inactive. </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re58.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch04s02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re60.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>rio_setup_device</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>rio_route_add_entry</span></td></tr></table></div></body></html>