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#ifndef LINUX_PCI_ATS_H #define LINUX_PCI_ATS_H #include <linux/pci.h> /* Address Translation Service */ struct pci_ats { int pos; /* capability position */ int stu; /* Smallest Translation Unit */ int qdep; /* Invalidate Queue Depth */ int ref_cnt; /* Physical Function reference count */ unsigned int is_enabled:1; /* Enable bit is set */ }; #ifdef CONFIG_PCI_ATS int pci_enable_ats(struct pci_dev *dev, int ps); void pci_disable_ats(struct pci_dev *dev); int pci_ats_queue_depth(struct pci_dev *dev); /** * pci_ats_enabled - query the ATS status * @dev: the PCI device * * Returns 1 if ATS capability is enabled, or 0 if not. */ static inline int pci_ats_enabled(struct pci_dev *dev) { return dev->ats && dev->ats->is_enabled; } #else /* CONFIG_PCI_ATS */ static inline int pci_enable_ats(struct pci_dev *dev, int ps) { return -ENODEV; } static inline void pci_disable_ats(struct pci_dev *dev) { } static inline int pci_ats_queue_depth(struct pci_dev *dev) { return -ENODEV; } static inline int pci_ats_enabled(struct pci_dev *dev) { return 0; } #endif /* CONFIG_PCI_ATS */ #ifdef CONFIG_PCI_PRI int pci_enable_pri(struct pci_dev *pdev, u32 reqs); void pci_disable_pri(struct pci_dev *pdev); bool pci_pri_enabled(struct pci_dev *pdev); int pci_reset_pri(struct pci_dev *pdev); bool pci_pri_stopped(struct pci_dev *pdev); int pci_pri_status(struct pci_dev *pdev); #else /* CONFIG_PCI_PRI */ static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs) { return -ENODEV; } static inline void pci_disable_pri(struct pci_dev *pdev) { } static inline bool pci_pri_enabled(struct pci_dev *pdev) { return false; } static inline int pci_reset_pri(struct pci_dev *pdev) { return -ENODEV; } static inline bool pci_pri_stopped(struct pci_dev *pdev) { return true; } static inline int pci_pri_status(struct pci_dev *pdev) { return -ENODEV; } #endif /* CONFIG_PCI_PRI */ #ifdef CONFIG_PCI_PASID int pci_enable_pasid(struct pci_dev *pdev, int features); void pci_disable_pasid(struct pci_dev *pdev); int pci_pasid_features(struct pci_dev *pdev); int pci_max_pasids(struct pci_dev *pdev); #else /* CONFIG_PCI_PASID */ static inline int pci_enable_pasid(struct pci_dev *pdev, int features) { return -EINVAL; } static inline void pci_disable_pasid(struct pci_dev *pdev) { } static inline int pci_pasid_features(struct pci_dev *pdev) { return -EINVAL; } static inline int pci_max_pasids(struct pci_dev *pdev) { return -EINVAL; } #endif /* CONFIG_PCI_PASID */ #endif /* LINUX_PCI_ATS_H*/