diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:55:21 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:55:21 -0700 |
| commit | bbb20089a3275a19e475dbc21320c3742e3ca423 (patch) | |
| tree | 216fdc1cbef450ca688135c5b8969169482d9a48 /drivers/pci/pci.h | |
| parent | 3e48e656903e9fd8bc805c6a2c4264d7808d315b (diff) | |
| parent | 657a77fa7284d8ae28dfa48f1dc5d919bf5b2843 (diff) | |
Merge branch 'dmaengine' into async-tx-next
Conflicts:
crypto/async_tx/async_xor.c
drivers/dma/ioat/dma_v2.h
drivers/dma/ioat/pci.c
drivers/md/raid5.c
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index d03f6b99f29..f73bcbedf37 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -229,6 +229,15 @@ struct pci_sriov { u8 __iomem *mstate; /* VF Migration State Array */ }; +/* 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 */ + int is_enabled:1; /* Enable bit is set */ +}; + #ifdef CONFIG_PCI_IOV extern int pci_iov_init(struct pci_dev *dev); extern void pci_iov_release(struct pci_dev *dev); @@ -236,6 +245,20 @@ extern int pci_iov_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type); extern void pci_restore_iov_state(struct pci_dev *dev); extern int pci_iov_bus_range(struct pci_bus *bus); + +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 static inline int pci_iov_init(struct pci_dev *dev) { @@ -257,6 +280,22 @@ static inline int pci_iov_bus_range(struct pci_bus *bus) { return 0; } + +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 /* DRIVERS_PCI_H */ |