5cdede2408
This patch moves the relevant declarations from the local header file in drivers/pci to a more accessible locations so that it can be used by the AMD IOMMU driver too. The file is named pci-ats.h because support for the PCI PRI capability will also be added there in a later patch-set. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
#ifndef LINUX_PCI_ATS_H
|
|
#define LINUX_PCI_ATS_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_IOV
|
|
|
|
extern int pci_enable_ats(struct pci_dev *dev, int ps);
|
|
extern void pci_disable_ats(struct pci_dev *dev);
|
|
extern 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_IOV */
|
|
|
|
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_IOV */
|
|
|
|
#endif /* LINUX_PCI_ATS_H*/
|