Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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);
30#else
31#define pcie_aspm_init_link_state(pdev) do {} while (0)
32#define pcie_aspm_exit_link_state(pdev) do {} while (0)
33#define pcie_aspm_pm_state_change(pdev) do {} while (0)
34#define pci_disable_link_state(pdev, state) do {} while (0)
35#endif
36
37#ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */
38extern void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev);
39extern void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev);
40#else
41#define pcie_aspm_create_sysfs_dev_files(pdev) do {} while (0)
42#define pcie_aspm_remove_sysfs_dev_files(pdev) do {} while (0)
43#endif
44#endif /* LINUX_ASPM_H */