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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>mpt_send_handshake_request</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Linux Device Drivers" /><link rel="up" href="ch04.html#id2637965" title="Fusion message devices" /><link rel="prev" href="re311.html" title="mpt_free_msg_frame" /><link rel="next" href="re313.html" title="mpt_verify_adapter" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>mpt_send_handshake_request</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re311.html">Prev</a> </td><th width="60%" align="center">Fusion message devices</th><td width="20%" align="right"> <a accesskey="n" href="re313.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="mpt_send_handshake_request"><a id="API-mpt-send-handshake-request"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>mpt_send_handshake_request —
Send MPT request via doorbell handshake method.
</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">mpt_send_handshake_request </b>(</code></td><td>u8 <var class="pdparam">cb_idx</var>, </td></tr><tr><td> </td><td>MPT_ADAPTER * <var class="pdparam">ioc</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">reqBytes</var>, </td></tr><tr><td> </td><td>u32 * <var class="pdparam">req</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">sleepFlag</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2639800"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>cb_idx</code></em></span></dt><dd><p>
Handle of registered MPT protocol driver
</p></dd><dt><span class="term"><em class="parameter"><code>ioc</code></em></span></dt><dd><p>
Pointer to MPT adapter structure
</p></dd><dt><span class="term"><em class="parameter"><code>reqBytes</code></em></span></dt><dd><p>
Size of the request in bytes
</p></dd><dt><span class="term"><em class="parameter"><code>req</code></em></span></dt><dd><p>
Pointer to MPT request frame
</p></dd><dt><span class="term"><em class="parameter"><code>sleepFlag</code></em></span></dt><dd><p>
Use schedule if CAN_SLEEP else use udelay.
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2639896"></a><h2>Description</h2><p>
This routine is used exclusively to send MptScsiTaskMgmt
requests since they are required to be sent via doorbell handshake.
</p></div><div class="refsect1" title="NOTE"><a id="id2639908"></a><h2>NOTE</h2><p>
It is the callers responsibility to byte-swap fields in the
request which are greater than 1 byte in size.
</p><p>
Returns 0 for success, non-zero for failure.
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