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pci-aspm.h

pci-aspm.h 1.8 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 pcie_aspm_powersave_config_link(struct pci_dev *pdev);
    30. 

  30. extern void pci_disable_link_state(struct pci_dev *pdev, int state);
    31. 

  31. extern void pci_disable_link_state_locked(struct pci_dev *pdev, int state);
    32. 

  32. extern void pcie_clear_aspm(struct pci_bus *bus);
    33. 

  33. extern void pcie_no_aspm(void);
    34. 

  34. #else
    35. 

  35. static inline void pcie_aspm_init_link_state(struct pci_dev *pdev)
    36. 

  36. {
    37. 

  37. }
    38. 

  38. static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev)
    39. 

  39. {
    40. 

  40. }
    41. 

  41. static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev)
    42. 

  42. {
    43. 

  43. }
    44. 

  44. static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev)
    45. 

  45. {
    46. 

  46. }
    47. 

  47. static inline void pci_disable_link_state(struct pci_dev *pdev, int state)
    48. 

  48. {
    49. 

  49. }
    50. 

  50. static inline void pcie_clear_aspm(struct pci_bus *bus)
    51. 

  51. {
    52. 

  52. }
    53. 

  53. static inline void pcie_no_aspm(void)
    54. 

  54. {
    55. 

  55. }
    56. 

  56. #endif
    57. 

  57. 

  58. #ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */
    59. 

  59. extern void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev);
    60. 

  60. extern void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev);
    61. 

  61. #else
    62. 

  62. static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev)
    63. 

  63. {
    64. 

  64. }
    65. 

  65. static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev)
    66. 

  66. {
    67. 

  67. }
    68. 

  68. #endif
    69. 

  69. #endif /* LINUX_ASPM_H */
    70.