LXR linux/include/asm-generic/pci

   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