<?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>sata_scr_read</title><meta name="generator" content="DocBook XSL Stylesheets V1.76.1" /><link rel="home" href="index.html" title="libATA Developer's Guide" /><link rel="up" href="libataExt.html" title="Chapter 4. libata Library" /><link rel="prev" href="API-sata-scr-valid.html" title="sata_scr_valid" /><link rel="next" href="API-sata-scr-write.html" title="sata_scr_write" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>sata_scr_read</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-sata-scr-valid.html">Prev</a> </td><th width="60%" align="center">Chapter 4. libata Library</th><td width="20%" align="right"> <a accesskey="n" href="API-sata-scr-write.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="sata_scr_read"><a id="API-sata-scr-read"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>sata_scr_read — read SCR register of the specified port </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 <strong>fsfuncsata_scr_read </strong>(</code></td><td>struct ata_link * <var class="pdparam">link</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">reg</var>, </td></tr><tr><td> </td><td>u32 * <var class="pdparam">val</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id3078395"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>link</code></em></span></dt><dd><p> ATA link to read SCR for </p></dd><dt><span class="term"><em class="parameter"><code>reg</code></em></span></dt><dd><p> SCR to read </p></dd><dt><span class="term"><em class="parameter"><code>val</code></em></span></dt><dd><p> Place to store read value </p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id3078453"></a><h2>Description</h2><p> Read SCR register <em class="parameter"><code>reg</code></em> of <em class="parameter"><code>link</code></em> into *<em class="parameter"><code>val</code></em>. This function is guaranteed to succeed if <em class="parameter"><code>link</code></em> is ap->link, the cable type of the port is SATA and the port implements ->scr_read. </p></div><div class="refsect1" title="LOCKING"><a id="id3078488"></a><h2>LOCKING</h2><p> None if <em class="parameter"><code>link</code></em> is ap->link. Kernel thread context otherwise. </p></div><div class="refsect1" title="RETURNS"><a id="id3078504"></a><h2>RETURNS</h2><p> 0 on success, negative errno on failure. </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-sata-scr-valid.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="libataExt.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-sata-scr-write.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>sata_scr_valid</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>sata_scr_write</span></td></tr></table></div></body></html>