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
26void pcie_aspm_init_link_state(struct pci_dev *pdev);
27void pcie_aspm_exit_link_state(struct pci_dev *pdev);
28void pcie_aspm_pm_state_change(struct pci_dev *pdev);
29void pcie_aspm_powersave_config_link(struct pci_dev *pdev);
30void pci_disable_link_state(struct pci_dev *pdev, int state);
31void pci_disable_link_state_locked(struct pci_dev *pdev, int state);
32void pcie_no_aspm(void);
33#else
34static inline void pcie_aspm_init_link_state(struct pci_dev *pdev)
35{
36}
37static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev)
38{
39}
40static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev)
41{
42}
43static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev)
44{
45}
46static inline void pci_disable_link_state(struct pci_dev *pdev, int state)
47{
48}
49static inline void pcie_no_aspm(void)
50{
51}
52#endif
53
54#ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */
55void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev);
56void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev);
57#else
58static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev)
59{
60}
61static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev)
62{
63}
64#endif
65#endif /* LINUX_ASPM_H */
66