diff --git a/src/pci-enum.h b/src/pci-enum.h
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+/*
+ * (C) Copyright IBM Corporation 2006
+ *
+ * Copyright (c) 2007 Paulo R. Zanoni, Tiago Vignatti
+ *
+ * Copyright 2009 Red Hat, Inc.
+ *
+ * Copyright (c) 2014 NVIDIA Corporation
+ *
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * pci-enum.h
+ * 
+ * Based on libpciaccess/include/pciaccess.h from libpciaccess-0.12.1, which
+ * can be found here:
+ *
+ * http://cgit.freedesktop.org/xorg/lib/libpciaccess
+ *
+ * Original authors: Ian Romanick <idr@us.ibm.com>, Paulo R. Zanoni,
+ *                   Tiago Vignatti
+ */
+
+#ifndef PCI_ENUM_H
+#define PCI_ENUM_H
+
+#include <inttypes.h>
+
+struct pci_id_match;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int pci_enum_match_id(struct pci_id_match *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#define PCI_MATCH_ANY  (~0U)
+
+#define PCI_BASE_CLASS_MASK 0xff00
+#define PCI_SUB_CLASS_MASK  0x00ff
+#define PCI_FULL_CLASS_MASK PCI_BASE_CLASS_MASK | PCI_SUB_CLASS_MASK
+
+/**
+ * Compare two PCI ID values (either vendor or device).  This is used
+ * internally to compare the fields of pci_id_match to the fields of
+ * pci_device.
+ */
+#define PCI_ID_COMPARE(a, b) \
+    (((a) == PCI_MATCH_ANY) || ((a) == (b)))
+
+/**
+ */
+struct pci_id_match {
+    /**
+     * Device/vendor matching controls
+     * 
+     * Control the search based on the device, vendor, subdevice, or subvendor
+     * IDs.  Setting any of these fields to PCI_MATCH_ANY will cause the field
+     * to not be used in the comparison.
+     */
+    /*@{*/
+    uint32_t    vendor_id;
+    uint32_t    device_id;
+    uint32_t    subvendor_id;
+    uint32_t    subdevice_id;
+    /*@}*/
+
+
+    /**
+     * Device class matching controls
+     * 
+     * Device's class and subclass. The class is at bits [15:8], subclass is at
+     * bits [7:0].
+     */
+    /*@{*/
+    uint16_t    device_class;
+    uint16_t    device_class_mask;
+    /*@}*/
+
+    /**
+     * Match results
+     *
+     * Specifies the number of devices found that match this criteria.
+     */
+    /*@{*/
+    uint16_t    num_matches;
+};
+
+#endif /* PCI_ENUM_H */
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