Intel Extensible Firmware Interface - Manual (Page 444)

Extensible Firmware Interface Specification
12-26 12/01/02 Version 1.10
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.CopyMem()
Summary
Enables a PCI driver to copy one region of PCI root bridge memory space to another region of PCI
root bridge memory space.
Prototype
typedef
EFI_STATUS
(EFIAPI *EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_COPY_MEM) (
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
*This,
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
IN UINT64 DestAddress,
IN UINT64 SrcAddress,
IN UINTN Count
);
Parameters
This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
instance. Type EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL is
defined in Section 12.2.
Width Signifies the width of the memory operations. Type
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH is defined
in Section 12.2.
DestAddress The destination address of the memory operation. The caller is
responsible for aligning the
DestAddress if required.
SrcAddress The source address of the memory operation. The caller is
responsible for aligning the
SrcAddress if required.
Count The number of memory operations to perform. Bytes moved is
Width size * Count , starting at DestAddress and
SrcAddress .