1 /* ASB2305 PCI I/O mapping handler
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
11 #include <linux/pci.h>
12 #include <linux/module.h>
15 * Create a virtual mapping cookie for a PCI BAR (memory or IO)
17 void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
19 resource_size_t start = pci_resource_start(dev, bar);
20 resource_size_t len = pci_resource_len(dev, bar);
21 unsigned long flags = pci_resource_flags(dev, bar);
26 if ((flags & IORESOURCE_IO) || (flags & IORESOURCE_MEM))
27 return (void __iomem *) start;
31 EXPORT_SYMBOL(pci_iomap);