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asm-generic
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pci_iomap.h

pci_iomap.h 2.0 KB
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  1. /* SPDX-License-Identifier: GPL-2.0+ */
    2. 

  2. /* Generic I/O port emulation.
    3. 

  3.  *
    4. 

  4.  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
    5. 

  5.  * Written by David Howells ([email protected])
    6. 

  6.  */
    7. 

  7. #ifndef __ASM_GENERIC_PCI_IOMAP_H
    8. 

  8. #define __ASM_GENERIC_PCI_IOMAP_H
    9. 

  9. 

  10. struct pci_dev;
    11. 

  11. #ifdef CONFIG_PCI
    12. 

  12. /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
    13. 

  13. extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
    14. 

  14. extern void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max);
    15. 

  15. extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
    16. 

  16. 				     unsigned long offset,
    17. 

  17. 				     unsigned long maxlen);
    18. 

  18. extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
    19. 

  19. 					unsigned long offset,
    20. 

  20. 					unsigned long maxlen);
    21. 

  21. extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
    22. 

  22. /* Create a virtual mapping cookie for a port on a given PCI device.
    23. 

  23.  * Do not call this directly, it exists to make it easier for architectures
    24. 

  24.  * to override */
    25. 

  25. #ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
    26. 

  26. extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
    27. 

  27. 				      unsigned int nr);
    28. 

  28. #elif !defined(CONFIG_HAS_IOPORT_MAP)
    29. 

  29. #define __pci_ioport_map(dev, port, nr) NULL
    30. 

  30. #else
    31. 

  31. #define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
    32. 

  32. #endif
    33. 

  33. 

  34. #elif defined(CONFIG_GENERIC_PCI_IOMAP)
    35. 

  35. static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
    36. 

  36. {
    37. 

  37. 	return NULL;
    38. 

  38. }
    39. 

  39. 

  40. static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
    41. 

  41. {
    42. 

  42. 	return NULL;
    43. 

  43. }
    44. 

  44. static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
    45. 

  45. 					    unsigned long offset,
    46. 

  46. 					    unsigned long maxlen)
    47. 

  47. {
    48. 

  48. 	return NULL;
    49. 

  49. }
    50. 

  50. static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
    51. 

  51. 					       unsigned long offset,
    52. 

  52. 					       unsigned long maxlen)
    53. 

  53. {
    54. 

  54. 	return NULL;
    55. 

  55. }
    56. 

  56. static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
    57. 

  57. { }
    58. 

  58. #endif
    59. 

  59. 

  60. #endif /* __ASM_GENERIC_PCI_IOMAP_H */
    61.