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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*/