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| author | Bjorn Helgaas <bhelgaas@google.com> | 2024-11-25 13:40:55 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2024-11-25 13:40:55 -0600 |
| commit | ab02bafcecedcd936d9e8526bcf1542642ad2947 (patch) | |
| tree | 9c57b82784dac878302ed43a8293b5b55d2dd75d /drivers/pci/pci.h | |
| parent | efcbd9d3975f03c600f42a018f2453f2957042ad (diff) | |
| parent | 48d0fd2b903e397c2a9621ab35f3d8877f61aee4 (diff) | |
| download | linux-ab02bafcecedcd936d9e8526bcf1542642ad2947.tar.gz linux-ab02bafcecedcd936d9e8526bcf1542642ad2947.tar.bz2 linux-ab02bafcecedcd936d9e8526bcf1542642ad2947.zip | |
Merge branch 'pci/tph'
- Add and document TLP Processing Hints (TPH) support so drivers can enable
and disable TPH and the kernel can save/restore TPH configuration (Wei
Huang)
- Add TPH Steering Tag support so drivers can retrieve Steering Tag values
associated with specific CPUs via an ACPI _DSM to direct DMA writes
closer to their consumers (Wei Huang)
* pci/tph:
PCI/TPH: Add TPH documentation
PCI/TPH: Add Steering Tag support
PCI: Add TLP Processing Hints (TPH) support
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 7531e4b005c6..2e40fc63ba31 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -638,6 +638,18 @@ static inline int pci_iov_bus_range(struct pci_bus *bus) #endif /* CONFIG_PCI_IOV */ +#ifdef CONFIG_PCIE_TPH +void pci_restore_tph_state(struct pci_dev *dev); +void pci_save_tph_state(struct pci_dev *dev); +void pci_no_tph(void); +void pci_tph_init(struct pci_dev *dev); +#else +static inline void pci_restore_tph_state(struct pci_dev *dev) { } +static inline void pci_save_tph_state(struct pci_dev *dev) { } +static inline void pci_no_tph(void) { } +static inline void pci_tph_init(struct pci_dev *dev) { } +#endif + #ifdef CONFIG_PCIE_PTM void pci_ptm_init(struct pci_dev *dev); void pci_save_ptm_state(struct pci_dev *dev); |