include/asm-generic/pci_iomap.h

   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
  14 struct pci_dev;
  15 #ifdef CONFIG_PCI
  16 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
  17 extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
  18 extern 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
  25 extern 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)
  32 static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
  33 {
  34         return NULL;
  35 }
  36
  37 static 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 */