| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| Shaohua Li | 7d715a6 | 2008-02-25 09:46:41 +0800 | [diff] [blame] | 2 | /* |
| 3 | * aspm.h |
| 4 | * |
| 5 | * PCI Express ASPM defines and function prototypes |
| 6 | * |
| 7 | * Copyright (C) 2007 Intel Corp. |
| 8 | * Zhang Yanmin (yanmin.zhang@intel.com) |
| 9 | * Shaohua Li (shaohua.li@intel.com) |
| 10 | * |
| 11 | * For more information, please consult the following manuals (look at |
| 12 | * http://www.pcisig.com/ for how to get them): |
| 13 | * |
| 14 | * PCI Express Specification |
| 15 | */ |
| 16 | |
| 17 | #ifndef LINUX_ASPM_H |
| 18 | #define LINUX_ASPM_H |
| 19 | |
| 20 | #include <linux/pci.h> |
| 21 | |
| 22 | #define PCIE_LINK_STATE_L0S 1 |
| 23 | #define PCIE_LINK_STATE_L1 2 |
| 24 | #define PCIE_LINK_STATE_CLKPM 4 |
| 25 | |
| 26 | #ifdef CONFIG_PCIEASPM |
| Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 27 | void pcie_aspm_init_link_state(struct pci_dev *pdev); |
| 28 | void pcie_aspm_exit_link_state(struct pci_dev *pdev); |
| 29 | void pcie_aspm_pm_state_change(struct pci_dev *pdev); |
| 30 | void pcie_aspm_powersave_config_link(struct pci_dev *pdev); |
| 31 | void pci_disable_link_state(struct pci_dev *pdev, int state); |
| 32 | void pci_disable_link_state_locked(struct pci_dev *pdev, int state); |
| Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 33 | void pcie_no_aspm(void); |
| Shaohua Li | 7d715a6 | 2008-02-25 09:46:41 +0800 | [diff] [blame] | 34 | #else |
| 35 | static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) |
| 36 | { |
| 37 | } |
| 38 | static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) |
| 39 | { |
| 40 | } |
| 41 | static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) |
| 42 | { |
| 43 | } |
| Naga Chumbalkar | 1a680b7 | 2011-03-21 03:29:08 +0000 | [diff] [blame] | 44 | static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) |
| 45 | { |
| 46 | } |
| Shaohua Li | 7d715a6 | 2008-02-25 09:46:41 +0800 | [diff] [blame] | 47 | static inline void pci_disable_link_state(struct pci_dev *pdev, int state) |
| 48 | { |
| 49 | } |
| Shaohua Li | 5fde244 | 2008-07-23 10:32:24 +0800 | [diff] [blame] | 50 | static inline void pcie_no_aspm(void) |
| 51 | { |
| 52 | } |
| Shaohua Li | 7d715a6 | 2008-02-25 09:46:41 +0800 | [diff] [blame] | 53 | #endif |
| 54 | |
| 55 | #ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */ |
| Bjorn Helgaas | f39d5b7 | 2013-04-12 12:02:59 -0600 | [diff] [blame] | 56 | void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev); |
| 57 | void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev); |
| Shaohua Li | 7d715a6 | 2008-02-25 09:46:41 +0800 | [diff] [blame] | 58 | #else |
| 59 | static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev) |
| 60 | { |
| 61 | } |
| 62 | static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev) |
| 63 | { |
| 64 | } |
| 65 | #endif |
| 66 | #endif /* LINUX_ASPM_H */ |