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_wc(struct pci_dev *dev, int bar, unsigned long max);
  19 extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
  20                                      unsigned long offset,
  21                                      unsigned long maxlen);
  22 extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
  23                                         unsigned long offset,
  24                                         unsigned long maxlen);
  25 /* Create a virtual mapping cookie for a port on a given PCI device.
  26  * Do not call this directly, it exists to make it easier for architectures
  27  * to override */
  28 #ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
  29 extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
  30                                       unsigned int nr);
  31 #else
  32 #define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
  33 #endif
  34
  35 #elif defined(CONFIG_GENERIC_PCI_IOMAP)
  36 static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
  37 {
  38         return NULL;
  39 }
  40
  41 static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
  42 {
  43         return NULL;
  44 }
  45 static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
  46                                             unsigned long offset,
  47                                             unsigned long maxlen)
  48 {
  49         return NULL;
  50 }
  51 static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
  52                                                unsigned long offset,
  53                                                unsigned long maxlen)
  54 {
  55         return NULL;
  56 }
  57 #endif
  58
  59 #endif /* __ASM_GENERIC_IO_H */