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Protocols — PCI Bus Support
Version 1.10 12/01/02 12-83
EFI_PCI_IO_PROTOCOL.FreeBuffer()
Summary
Frees memory that was allocated with AllocateBuffer().
Prototype
typedef
EFI_STATUS
(EFIAPI *EFI_PCI_IO_PROTOCOL_FREE_BUFFER) (
IN EFI_PCI_IO_PROTOCOL *This,
IN UINTN Pages,
IN VOID *HostAddress
);
Parameters
This A pointer to the EFI_PCI_IO_PROTOCOL instance. Type
EFI_PCI_IO_PROTOCOL is defined in Section 12.4.
Pages The number of pages to free.
HostAddress The base system memory address of the allocated range.
Description
The FreeBuffer() function frees memory that was allocated with AllocateBuffer().
Status Codes Returned
EFI_SUCCESS The requested memory pages were freed.
EFI_INVALID_PARAMETER
The memory range specified by
HostAddress and Pages
was not allocated with
AllocateBuffer().