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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>i2o_block_transfer</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="ch04s02.html" title="I2O message devices" /><link rel="prev" href="re528.html" title="i2o_block_media_changed" /><link rel="next" href="re530.html" title="i2o_block_request_fn" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>i2o_block_transfer</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re528.html">Prev</a> </td><th width="60%" align="center">I2O message devices</th><td width="20%" align="right"> <a accesskey="n" href="re530.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="i2o_block_transfer"><a id="API-i2o-block-transfer"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>i2o_block_transfer —
Transfer a request to/from the I2O controller
</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">i2o_block_transfer </b>(</code></td><td>struct request * <var class="pdparam">req</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id3101843"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>req</code></em></span></dt><dd><p>
the request which should be transfered
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id3101870"></a><h2>Description</h2><p>
This function converts the request into a I2O message. The necessary
DMA buffers are allocated and after everything is setup post the message
to the I2O controller. No cleanup is done by this function. It is done
on the interrupt side when the reply arrives.
</p><p>
Return 0 on success or negative error code on failure.
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