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Linux kernel mirror (for testing)
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linux
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
26extern void pcie_aspm_init_link_state(struct pci_dev *pdev);
27extern void pcie_aspm_exit_link_state(struct pci_dev *pdev);
28extern void pcie_aspm_pm_state_change(struct pci_dev *pdev);
29extern void pci_disable_link_state(struct pci_dev *pdev, int state);
30extern void pcie_clear_aspm(void);
31extern void pcie_no_aspm(void);
32#else
33static inline void pcie_aspm_init_link_state(struct pci_dev *pdev)
34{
35}
36static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev)
37{
38}
39static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev)
40{
41}
42static inline void pci_disable_link_state(struct pci_dev *pdev, int state)
43{
44}
45static inline void pcie_clear_aspm(void)
46{
47}
48static inline void pcie_no_aspm(void)
49{
50}
51#endif
52
53#ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */
54extern void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev);
55extern void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev);
56#else
57static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev)
58{
59}
60static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev)
61{
62}
63#endif
64#endif /* LINUX_ASPM_H */