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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 /include/linux/pci.h | |
| parent | efcbd9d3975f03c600f42a018f2453f2957042ad (diff) | |
| parent | 48d0fd2b903e397c2a9621ab35f3d8877f61aee4 (diff) | |
| download | lwn-ab02bafcecedcd936d9e8526bcf1542642ad2947.tar.gz lwn-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 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 5db9b0b2dca1..19147cb5bd9d 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -442,6 +442,7 @@ struct pci_dev { unsigned int ats_enabled:1; /* Address Translation Svc */ unsigned int pasid_enabled:1; /* Process Address Space ID */ unsigned int pri_enabled:1; /* Page Request Interface */ + unsigned int tph_enabled:1; /* TLP Processing Hints */ unsigned int is_managed:1; /* Managed via devres */ unsigned int is_msi_managed:1; /* MSI release via devres installed */ unsigned int needs_freset:1; /* Requires fundamental reset */ @@ -544,6 +545,12 @@ struct pci_dev { /* These methods index pci_reset_fn_methods[] */ u8 reset_methods[PCI_NUM_RESET_METHODS]; /* In priority order */ + +#ifdef CONFIG_PCIE_TPH + u16 tph_cap; /* TPH capability offset */ + u8 tph_mode; /* TPH mode */ + u8 tph_req_type; /* TPH requester type */ +#endif }; static inline struct pci_dev *pci_physfn(struct pci_dev *dev) |