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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>pci_bus_alloc_resource</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="The Linux Kernel API" /><link rel="up" href="ch09s05.html" title="PCI Support Library" /><link rel="prev" href="re395.html" title="pci_msi_enabled" /><link rel="next" href="re397.html" title="pci_bus_add_device" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>pci_bus_alloc_resource</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re395.html">Prev</a> </td><th width="60%" align="center">PCI Support Library</th><td width="20%" align="right"> <a accesskey="n" href="re397.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="pci_bus_alloc_resource"><a id="API-pci-bus-alloc-resource"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>pci_bus_alloc_resource —
allocate a resource from a parent bus
</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">pci_bus_alloc_resource </b>(</code></td><td>struct pci_bus * <var class="pdparam">bus</var>, </td></tr><tr><td> </td><td>struct resource * <var class="pdparam">res</var>, </td></tr><tr><td> </td><td>resource_size_t <var class="pdparam">size</var>, </td></tr><tr><td> </td><td>resource_size_t <var class="pdparam">align</var>, </td></tr><tr><td> </td><td>resource_size_t <var class="pdparam">min</var>, </td></tr><tr><td> </td><td>unsigned int <var class="pdparam">type_mask</var>, </td></tr><tr><td> </td><td>void (*<var class="pdparam">alignf</var>)
<code>(</code>void *, struct resource *, resource_size_t, resource_size_t<code>)</code>, </td></tr><tr><td> </td><td>void * <var class="pdparam">alignf_data</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id3011212"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>bus</code></em></span></dt><dd><p>
PCI bus
</p></dd><dt><span class="term"><em class="parameter"><code>res</code></em></span></dt><dd><p>
resource to allocate
</p></dd><dt><span class="term"><em class="parameter"><code>size</code></em></span></dt><dd><p>
size of resource to allocate
</p></dd><dt><span class="term"><em class="parameter"><code>align</code></em></span></dt><dd><p>
alignment of resource to allocate
</p></dd><dt><span class="term"><em class="parameter"><code>min</code></em></span></dt><dd><p>
minimum /proc/iomem address to allocate
</p></dd><dt><span class="term"><em class="parameter"><code>type_mask</code></em></span></dt><dd><p>
IORESOURCE_* type flags
</p></dd><dt><span class="term"><em class="parameter"><code>alignf</code></em></span></dt><dd><p>
resource alignment function
</p></dd><dt><span class="term"><em class="parameter"><code>alignf_data</code></em></span></dt><dd><p>
data argument for resource alignment function
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id3011359"></a><h2>Description</h2><p>
Given the PCI bus a device resides on, the size, minimum address,
alignment and type, try to find an acceptable resource allocation
for a specific device resource.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re395.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch09s05.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re397.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>pci_msi_enabled</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>pci_bus_add_device</span></td></tr></table></div></body></html>
