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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 */ |