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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 pcie_aspm_powersave_config_link(struct pci_dev *pdev); | |
30 | extern void pci_disable_link_state(struct pci_dev *pdev, int state); | |
31 | extern void pcie_clear_aspm(void); | |
32 | extern void pcie_no_aspm(void); | |
33 | #else | |
34 | static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) | |
35 | { | |
36 | } | |
37 | static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) | |
38 | { | |
39 | } | |
40 | static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) | |
41 | { | |
42 | } | |
43 | static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) | |
44 | { | |
45 | } | |
46 | static inline void pci_disable_link_state(struct pci_dev *pdev, int state) | |
47 | { | |
48 | } | |
49 | static inline void pcie_clear_aspm(void) | |
50 | { | |
51 | } | |
52 | static inline void pcie_no_aspm(void) | |
53 | { | |
54 | } | |
55 | #endif | |
56 | ||
57 | #ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */ | |
58 | extern void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev); | |
59 | extern void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev); | |
60 | #else | |
61 | static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev) | |
62 | { | |
63 | } | |
64 | static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev) | |
65 | { | |
66 | } | |
67 | #endif | |
68 | #endif /* LINUX_ASPM_H */ |