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Extensible Firmware Interface Specification
12-92 12/01/02 Version 1.10
EFI_PCI_IO_PROTOCOL.SetBarAttributes()
Summary
Sets the attributes for a range of a BAR on a PCI controller.
Prototype
typedef
EFI_STATUS
(EFIAPI *EFI_PCI_IO_PROTOCOL_SET_BAR_ATTRIBUTES) (
IN EFI_PCI_IO_PROTOCOL *This,
IN UINT64 Attributes,
IN UINT8 BarIndex,
IN OUT UINT64 *Offset,
IN OUT UINT64 *Length
);
Parameters
This A pointer to the EFI_PCI_IO_PROTOCOL instance. Type
EFI_PCI_IO_PROTOCOL is defined in Section 12.4.
Attributes The mask of attributes to set for the resource range specified by
BarIndex, Offset, and Length.
BarIndex The BAR index of the standard PCI Configuration header to use as
the base address for the resource range. The legal range for this
field is 0..5.
Offset A pointer to the BAR relative base address of the resource range to
be modified by the attributes specified by Attributes. On
return, *Offset will be set to the actual base address of the
resource range. Not all resources can be set to a byte boundary, so
the actual base address may differ from the one passed in by the
caller.
Length A pointer to the length of the resource range to be modified by the
attributes specified by Attributes. On return, *Length will
be set to the actual length of the resource range. Not all resources
can be set to a byte boundary, so the actual length may differ from
the one passed in by the caller.