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| author |   CQ Tang <cq.tang@intel.com> | 2017-05-30 09:25:49 -0700 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2017-05-30 15:40:50 -0500 |
| commit | 4ebeb1ec56d4c54a56b6f43c2603d9a4688c83ba (patch) | |
| tree | 8d5adc040423e0c4bd7374a4f4679c8e238f337b /include/linux/pci-ats.h | |
| parent | PCI: Cache PRI and PASID bits in pci_dev (diff) | |
| download | linux-dev-4ebeb1ec56d4c54a56b6f43c2603d9a4688c83ba.tar.xz linux-dev-4ebeb1ec56d4c54a56b6f43c2603d9a4688c83ba.zip | |
PCI: Restore PRI and PASID state after Function-Level Reset
After a Function-Level Reset, PCI states need to be restored. Save PASID
features and PRI reqs cached.
[bhelgaas: search for capability only if PRI/PASID were enabled]
Signed-off-by: CQ Tang <cq.tang@intel.com>
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Jean-Phillipe Brucker <jean-philippe.brucker@arm.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'include/linux/pci-ats.h')
| -rw-r--r-- | include/linux/pci-ats.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h index 57e0b8250947..782fb8e0755f 100644 --- a/include/linux/pci-ats.h +++ b/include/linux/pci-ats.h @@ -7,6 +7,7 @@ int pci_enable_pri(struct pci_dev *pdev, u32 reqs); void pci_disable_pri(struct pci_dev *pdev); +void pci_restore_pri_state(struct pci_dev *pdev); int pci_reset_pri(struct pci_dev *pdev); #else /* CONFIG_PCI_PRI */ @@ -20,6 +21,10 @@ static inline void pci_disable_pri(struct pci_dev *pdev) { } +static inline void pci_restore_pri_state(struct pci_dev *pdev) +{ +} + static inline int pci_reset_pri(struct pci_dev *pdev) { return -ENODEV; @@ -31,6 +36,7 @@ static inline int pci_reset_pri(struct pci_dev *pdev) int pci_enable_pasid(struct pci_dev *pdev, int features); void pci_disable_pasid(struct pci_dev *pdev); +void pci_restore_pasid_state(struct pci_dev *pdev); int pci_pasid_features(struct pci_dev *pdev); int pci_max_pasids(struct pci_dev *pdev); @@ -45,6 +51,10 @@ static inline void pci_disable_pasid(struct pci_dev *pdev) { } +static inline void pci_restore_pasid_state(struct pci_dev *pdev) +{ +} + static inline int pci_pasid_features(struct pci_dev *pdev) { return -EINVAL; |