Release 4.14 include/linux/pci-aspm.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 *      aspm.h
 *
 *      PCI Express ASPM defines and function prototypes
 *
 *      Copyright (C) 2007 Intel Corp.
 *              Zhang Yanmin (yanmin.zhang@intel.com)
 *              Shaohua Li (shaohua.li@intel.com)
 *
 *      For more information, please consult the following manuals (look at
 *      http://www.pcisig.com/ for how to get them):
 *
 *      PCI Express Specification
 */

#ifndef LINUX_ASPM_H

#define LINUX_ASPM_H

#include <linux/pci.h>


#define PCIE_LINK_STATE_L0S	1

#define PCIE_LINK_STATE_L1	2

#define PCIE_LINK_STATE_CLKPM	4

#ifdef CONFIG_PCIEASPM
void pcie_aspm_init_link_state(struct pci_dev *pdev);
void pcie_aspm_exit_link_state(struct pci_dev *pdev);
void pcie_aspm_pm_state_change(struct pci_dev *pdev);
void pcie_aspm_powersave_config_link(struct pci_dev *pdev);
void pci_disable_link_state(struct pci_dev *pdev, int state);
void pci_disable_link_state_locked(struct pci_dev *pdev, int state);
void pcie_no_aspm(void);
#else


static inline void pcie_aspm_init_link_state(struct pci_dev *pdev)
{
}
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static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev)
{
}
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static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev)
{
}
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static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev)
{
}
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static inline void pci_disable_link_state(struct pci_dev *pdev, int state)
{
}
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static inline void pcie_no_aspm(void)
{
}
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#endif

#ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */
void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev);
void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev);
#else


static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev)
{
}
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static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev)
{
}
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#endif
#endif /* LINUX_ASPM_H */
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Directory: include/linux

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