projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 7d715a6c SL |
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 | ||
| 16 | #ifndef LINUX_ASPM_H | |
| 17 | #define LINUX_ASPM_H | |
| 18 | ||
| 19 | #include <linux/pci.h> | |
| 20 | ||
| 21 | #define PCIE_LINK_STATE_L0S 1 | |
| 22 | #define PCIE_LINK_STATE_L1 2 | |
| 23 | #define PCIE_LINK_STATE_CLKPM 4 | |
| 24 | ||
| 25 | #ifdef CONFIG_PCIEASPM | |
| 26 | extern void pcie_aspm_init_link_state(struct pci_dev *pdev); | |
| 27 | extern void pcie_aspm_exit_link_state(struct pci_dev *pdev); | |
| 28 | extern void pcie_aspm_pm_state_change(struct pci_dev *pdev); | |
| 29 | extern void pci_disable_link_state(struct pci_dev *pdev, int state); | |
| 2f671e2d | 30 | extern void pcie_clear_aspm(void); |
| 5fde244d | 31 | extern void pcie_no_aspm(void); |
| 7d715a6c SL |
32 | #else |
| 33 | static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) | |
| 34 | { | |
| 35 | } | |
| 36 | static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) | |
| 37 | { | |
| 38 | } | |
| 39 | static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) | |
| 40 | { | |
| 41 | } | |
| 42 | static inline void pci_disable_link_state(struct pci_dev *pdev, int state) | |
| 43 | { | |
| 44 | } | |
| 2f671e2d MG |
45 | static inline void pcie_clear_aspm(void) |
| 46 | { | |
| 47 | } | |
| 5fde244d SL |
48 | static inline void pcie_no_aspm(void) |
| 49 | { | |
| 50 | } | |
| 7d715a6c SL |
51 | #endif |
| 52 | ||
| 53 | #ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */ | |
| 54 | extern void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev); | |
| 55 | extern void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev); | |
| 56 | #else | |
| 57 | static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev) | |
| 58 | { | |
| 59 | } | |
| 60 | static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev) | |
| 61 | { | |
| 62 | } | |
| 63 | #endif | |
| 64 | #endif /* LINUX_ASPM_H */ |