pci-aspm.h 1.7 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465
  1. /*
  2. * aspm.h
  3. *
  4. * PCI Express ASPM defines and function prototypes
  5. *
  6. * Copyright (C) 2007 Intel Corp.
  7. * Zhang Yanmin (yanmin.zhang@intel.com)
  8. * Shaohua Li (shaohua.li@intel.com)
  9. *
  10. * For more information, please consult the following manuals (look at
  11. * http://www.pcisig.com/ for how to get them):
  12. *
  13. * PCI Express Specification
  14. */
  15. #ifndef LINUX_ASPM_H
  16. #define LINUX_ASPM_H
  17. #include <linux/pci.h>
  18. #define PCIE_LINK_STATE_L0S 1
  19. #define PCIE_LINK_STATE_L1 2
  20. #define PCIE_LINK_STATE_CLKPM 4
  21. #ifdef CONFIG_PCIEASPM
  22. void pcie_aspm_init_link_state(struct pci_dev *pdev);
  23. void pcie_aspm_exit_link_state(struct pci_dev *pdev);
  24. void pcie_aspm_pm_state_change(struct pci_dev *pdev);
  25. void pcie_aspm_powersave_config_link(struct pci_dev *pdev);
  26. void pci_disable_link_state(struct pci_dev *pdev, int state);
  27. void pci_disable_link_state_locked(struct pci_dev *pdev, int state);
  28. void pcie_no_aspm(void);
  29. #else
  30. static inline void pcie_aspm_init_link_state(struct pci_dev *pdev)
  31. {
  32. }
  33. static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev)
  34. {
  35. }
  36. static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev)
  37. {
  38. }
  39. static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev)
  40. {
  41. }
  42. static inline void pci_disable_link_state(struct pci_dev *pdev, int state)
  43. {
  44. }
  45. static inline void pcie_no_aspm(void)
  46. {
  47. }
  48. #endif
  49. #ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */
  50. void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev);
  51. void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev);
  52. #else
  53. static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev)
  54. {
  55. }
  56. static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev)
  57. {
  58. }
  59. #endif
  60. #endif /* LINUX_ASPM_H */