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);
18extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
19				     unsigned long offset,
20				     unsigned long maxlen);
21/* Create a virtual mapping cookie for a port on a given PCI device.
22 * Do not call this directly, it exists to make it easier for architectures
23 * to override */
24#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
25extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
26				      unsigned int nr);
27#else
28#define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
29#endif
30
31#elif defined(CONFIG_GENERIC_PCI_IOMAP)
32static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
33{
34	return NULL;
35}
36
37static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
38					    unsigned long offset,
39					    unsigned long maxlen)
40{
41	return NULL;
42}
43#endif
44
45#endif /* __ASM_GENERIC_IO_H */
46