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linux
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pci-aspm.h

pci-aspm.h 1.4 KB
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  1. /*
    2. 

  2.  *	aspm.h
    3. 

  3.  *
    4. 

  4.  *	PCI Express ASPM defines and function prototypes
    5. 

  5.  *
    6. 

  6.  *	Copyright (C) 2007 Intel Corp.
    7. 

  7.  *		Zhang Yanmin (yanmin.zhang@intel.com)
    8. 

  8.  *		Shaohua Li (shaohua.li@intel.com)
    9. 

  9.  *
    10. 

  10.  *	For more information, please consult the following manuals (look at
    11. 

  11.  *	http://www.pcisig.com/ for how to get them):
    12. 

  12.  *
    13. 

  13.  *	PCI Express Specification
    14. 

  14.  */
    15. 

  15. 

  16. #ifndef LINUX_ASPM_H
    17. 

  17. #define LINUX_ASPM_H
    18. 

  18. 

  19. #include <linux/pci.h>
    20. 

  20. 

  21. #define PCIE_LINK_STATE_L0S	1
    22. 

  22. #define PCIE_LINK_STATE_L1	2
    23. 

  23. #define PCIE_LINK_STATE_CLKPM	4
    24. 

  24. 

  25. #ifdef CONFIG_PCIEASPM
    26. 

  26. extern void pcie_aspm_init_link_state(struct pci_dev *pdev);
    27. 

  27. extern void pcie_aspm_exit_link_state(struct pci_dev *pdev);
    28. 

  28. extern void pcie_aspm_pm_state_change(struct pci_dev *pdev);
    29. 

  29. extern void pci_disable_link_state(struct pci_dev *pdev, int state);
    30. 

  30. #else
    31. 

  31. static inline void pcie_aspm_init_link_state(struct pci_dev *pdev)
    32. 

  32. {
    33. 

  33. }
    34. 

  34. static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev)
    35. 

  35. {
    36. 

  36. }
    37. 

  37. static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev)
    38. 

  38. {
    39. 

  39. }
    40. 

  40. static inline void pci_disable_link_state(struct pci_dev *pdev, int state)
    41. 

  41. {
    42. 

  42. }
    43. 

  43. #endif
    44. 

  44. 

  45. #ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */
    46. 

  46. extern void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev);
    47. 

  47. extern void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev);
    48. 

  48. #else
    49. 

  49. static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev)
    50. 

  50. {
    51. 

  51. }
    52. 

  52. static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev)
    53. 

  53. {
    54. 

  54. }
    55. 

  55. #endif
    56. 

  56. #endif /* LINUX_ASPM_H */
    57.