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