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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 */ |