EFI PCI IO PROTOCOL OPERATION

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Prototype

typedef enum {
  EfiPciIoOperationBusMasterRead,
  EfiPciIoOperationBusMasterWrite,
  EfiPciIoOperationBusMasterCommonBuffer,
  EfiPciIoOperationMaximum
} EFI_PCI_IO_PROTOCOL_OPERATION;

Description

Value Description
EfiPciIoOperationBusMasterRead A read operation from system memory by a bus master.
EfiPciIoOperationBusMasterWrite A write operation to system memory by a bus master.
EfiPciIoOperationBusMasterCommonBuffer Provides both read and write access to system memory by both the processor and a bus master. The buffer is coherent from both the processor’s and the bus master’s point of view.

Copyright (C) 2008 Phoenix Technologies Ltd. All Rights Reserved. Portions copyright (C) 2008 UEFI Forum, Inc. Used with permission.

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