1/* Generic I/O port emulation, based on MN10300 code
 2 *
 3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 4 * Written by David Howells (dhowells@redhat.com)
 5 *
 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.
10 */
11#ifndef __ASM_GENERIC_PCI_IOMAP_H
12#define __ASM_GENERIC_PCI_IOMAP_H
13
14struct pci_dev;
15#ifdef CONFIG_PCI
16/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
17extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
18/* Create a virtual mapping cookie for a port on a given PCI device.
19 * Do not call this directly, it exists to make it easier for architectures
20 * to override */
21#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
22extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
23				      unsigned int nr);
24#else
25#define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
26#endif
27
28#elif defined(CONFIG_GENERIC_PCI_IOMAP)
29static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
30{
31	return NULL;
32}
33#endif
34
35#endif /* __ASM_GENERIC_IO_H */