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  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 */
  60.