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 extern void pcie_aspm_init_link_state(struct pci_dev *pdev); 27 extern void pcie_aspm_exit_link_state(struct pci_dev *pdev); 28 extern void pcie_aspm_pm_state_change(struct pci_dev *pdev); 29 extern void pcie_aspm_powersave_config_link(struct pci_dev *pdev); 30 extern void pci_disable_link_state(struct pci_dev *pdev, int state); 31 extern void pcie_clear_aspm(void); 32 extern 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_clear_aspm(void)49static inline void pcie_clear_aspm(void) 50 { 51 } pcie_no_aspm(void)52static inline void pcie_no_aspm(void) 53 { 54 } 55 #endif 56 57 #ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */ 58 extern void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev); 59 extern void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev); 60 #else pcie_aspm_create_sysfs_dev_files(struct pci_dev * pdev)61static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev) 62 { 63 } pcie_aspm_remove_sysfs_dev_files(struct pci_dev * pdev)64static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev) 65 { 66 } 67 #endif 68 #endif /* LINUX_ASPM_H */ 69