/*
* VFIO PCI config space virtualization
*
* Copyright (C) 2012 Red Hat, Inc. All rights reserved.
* Author: Alex Williamson <alex.williamson@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Derived from original vfio:
* Copyright 2010 Cisco Systems, Inc. All rights reserved.
* Author: Tom Lyon, pugs@cisco.com
*/
/*
* This code handles reading and writing of PCI configuration registers.
* This is hairy because we want to allow a lot of flexibility to the
* user driver, but cannot trust it with all of the config fields.
* Tables determine which fields can be read and written, as well as
* which fields are 'virtualized' - special actions and translations to
* make it appear to the user that