<?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_mport_get_feature</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="ch04s03.html" title="Driver functionality" /><link rel="prev" href="re76.html" title="rio_setup_inb_dbell" /><link rel="next" href="re78.html" title="RIO_LOP_READ" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>rio_mport_get_feature</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re76.html">Prev</a> </td><th width="60%" align="center">Driver functionality</th><td width="20%" align="right"> <a accesskey="n" href="re78.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="rio_mport_get_feature"><a id="API-rio-mport-get-feature"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>rio_mport_get_feature — query for devices' extended features </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">u32 <b class="fsfunc">rio_mport_get_feature </b>(</code></td><td>struct rio_mport * <var class="pdparam">port</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">local</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">ftr</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2857542"></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 issue transaction </p></dd><dt><span class="term"><em class="parameter"><code>local</code></em></span></dt><dd><p> Indicate a local master port or remote device access </p></dd><dt><span class="term"><em class="parameter"><code>destid</code></em></span></dt><dd><p> Destination ID of the device </p></dd><dt><span class="term"><em class="parameter"><code>hopcount</code></em></span></dt><dd><p> Number of switch hops to the device </p></dd><dt><span class="term"><em class="parameter"><code>ftr</code></em></span></dt><dd><p> Extended feature code </p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2857636"></a><h2>Description</h2><p> Tell if a device supports a given RapidIO capability. Returns the offset of the requested extended feature block within the device's RIO configuration space or 0 in case the device does not support it. Possible values for <em class="parameter"><code>ftr</code></em>: </p><p> <code class="constant">RIO_EFB_PAR_EP_ID</code> LP/LVDS EP Devices </p><p> <code class="constant">RIO_EFB_PAR_EP_REC_ID</code> LP/LVDS EP Recovery Devices </p><p> <code class="constant">RIO_EFB_PAR_EP_FREE_ID</code> LP/LVDS EP Free Devices </p><p> <code class="constant">RIO_EFB_SER_EP_ID</code> LP/Serial EP Devices </p><p> <code class="constant">RIO_EFB_SER_EP_REC_ID</code> LP/Serial EP Recovery Devices </p><p> <code class="constant">RIO_EFB_SER_EP_FREE_ID</code> LP/Serial EP Free Devices </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re76.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch04s03.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re78.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>rio_setup_inb_dbell</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_LOP_READ</span></td></tr></table></div></body></html>