Add #defines for accessing Vendor ID, Revision, Length, and ID offsets in the Designated Vendor Specific Extended Capability (DVSEC). Defined in PCIe r5.0, sec 7.9.6.
Signed-off-by: David E. Box david.e.box@linux.intel.com Acked-by: Bjorn Helgaas bhelgaas@google.com Reviewed-by: Rafael J. Wysocki rafael.j.wysocki@intel.com --- V2 - No changes
include/uapi/linux/pci_regs.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h index ff6ccbc6efe9..318f3f1f9e92 100644 --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -1086,7 +1086,11 @@
/* Designated Vendor-Specific (DVSEC, PCI_EXT_CAP_ID_DVSEC) */ #define PCI_DVSEC_HEADER1 0x4 /* Designated Vendor-Specific Header1 */ +#define PCI_DVSEC_HEADER1_VID(x) ((x) & 0xffff) +#define PCI_DVSEC_HEADER1_REV(x) (((x) >> 16) & 0xf) +#define PCI_DVSEC_HEADER1_LEN(x) (((x) >> 20) & 0xfff) #define PCI_DVSEC_HEADER2 0x8 /* Designated Vendor-Specific Header2 */ +#define PCI_DVSEC_HEADER2_ID(x) ((x) & 0xffff)
/* Data Link Feature */ #define PCI_DLF_CAP 0x04 /* Capabilities Register */