projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 7d715a6c SL |
2 | /* |
| 3 | * aspm.h | |
| 4 | * | |
| 5 | * PCI Express ASPM defines and function prototypes | |
| 6 | * | |
| 7 | * Copyright (C) 2007 Intel Corp. | |
| 8 | * Zhang Yanmin (yanmin.zhang@intel.com) | |
| 9 | * Shaohua Li (shaohua.li@intel.com) | |
| 10 | * | |
| 11 | * For more information, please consult the following manuals (look at | |
| 12 | * http://www.pcisig.com/ for how to get them): | |
| 13 | * | |
| 14 | * PCI Express Specification | |
| 15 | */ | |
| 16 | ||
| 17 | #ifndef LINUX_ASPM_H | |
| 18 | #define LINUX_ASPM_H | |
| 19 | ||
| 20 | #include <linux/pci.h> | |
| 21 | ||
| 22 | #define PCIE_LINK_STATE_L0S 1 | |
| 23 | #define PCIE_LINK_STATE_L1 2 | |
| 24 | #define PCIE_LINK_STATE_CLKPM 4 | |
| 25 | ||
| 26 | #ifdef CONFIG_PCIEASPM | |
| f39d5b72 BH |
27 | void pcie_aspm_init_link_state(struct pci_dev *pdev); |
| 28 | void pcie_aspm_exit_link_state(struct pci_dev *pdev); | |
| 29 | void pcie_aspm_pm_state_change(struct pci_dev *pdev); | |
| 30 | void pcie_aspm_powersave_config_link(struct pci_dev *pdev); | |
| 31 | void pci_disable_link_state(struct pci_dev *pdev, int state); | |
| 32 | void pci_disable_link_state_locked(struct pci_dev *pdev, int state); | |
| f39d5b72 | 33 | void pcie_no_aspm(void); |
| 7d715a6c SL |
34 | #else |
| 35 | static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) | |
| 36 | { | |
| 37 | } | |
| 38 | static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) | |
| 39 | { | |
| 40 | } | |
| 41 | static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) | |
| 42 | { | |
| 43 | } | |
| 1a680b7c NC |
44 | static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) |
| 45 | { | |
| 46 | } | |
| 7d715a6c SL |
47 | static inline void pci_disable_link_state(struct pci_dev *pdev, int state) |
| 48 | { | |
| 49 | } | |
| 5fde244d SL |
50 | static inline void pcie_no_aspm(void) |
| 51 | { | |
| 52 | } | |
| 7d715a6c SL |
53 | #endif |
| 54 | ||
| 55 | #ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */ | |
| f39d5b72 BH |
56 | void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev); |
| 57 | void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev); | |
| 7d715a6c SL |
58 | #else |
| 59 | static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev) | |
| 60 | { | |
| 61 | } | |
| 62 | static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev) | |
| 63 | { | |
| 64 | } | |
| 65 | #endif | |
| 66 | #endif /* LINUX_ASPM_H */ |