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/** @file
Internal include file of DXE CPU IO Library.
It includes all necessary protocol/library class's header file
for implementation of IoLib library instance. It is included
all source code of this library instance.
Copyright (c) 2006 - 2010, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name: DxeCpuIoLibInternal.h
**/
#ifndef _DXE_CPUIO_LIB_INTERNAL_H_
#define _DXE_CPUIO_LIB_INTERNAL_H_
#include <FrameworkDxe.h>
#include <Protocol/CpuIo.h>
#include <Library/IoLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
/**
Reads registers in the EFI CPU I/O space.
Reads the I/O port specified by Port with registers width specified by Width.
The read value is returned. If such operations are not supported, then ASSERT().
This function must guarantee that all I/O read and write operations are serialized.
@param Port The base address of the I/O operation.
The caller is responsible for aligning the Address if required.
@param Width The width of the I/O operation.
@return Data read from registers in the EFI CPU I/O space.
**/
UINT64
EFIAPI
IoReadWorker (
IN UINTN Port,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width
);
/**
Writes registers in the EFI CPU I/O space.
Writes the I/O port specified by Port with registers width and value specified by Width
and Data respectively. Data is returned. If such operations are not supported, then ASSERT().
This function must guarantee that all I/O read and write operations are serialized.
@param Port The base address of the I/O operation.
The caller is responsible for aligning the Address if required.
@param Width The width of the I/O operation.
@param Data The value to write to the I/O port.
@return The paramter of Data.
**/
UINT64
EFIAPI
IoWriteWorker (
IN UINTN Port,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Data
);
/**
Reads memory-mapped registers in the EFI system memory space.
Reads the MMIO registers specified by Address with registers width specified by Width.
The read value is returned. If such operations are not supported, then ASSERT().
This function must guarantee that all MMIO read and write operations are serialized.
@param Address The MMIO register to read.
The caller is responsible for aligning the Address if required.
@param Width The width of the I/O operation.
@return Data read from registers in the EFI system memory space.
**/
UINT64
EFIAPI
MmioReadWorker (
IN UINTN Address,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width
);
/**
Writes memory-mapped registers in the EFI system memory space.
Writes the MMIO registers specified by Address with registers width and value specified by Width
and Data respectively. Data is returned. If such operations are not supported, then ASSERT().
This function must guarantee that all MMIO read and write operations are serialized.
@param Address The MMIO register to read.
The caller is responsible for aligning the Address if required.
@param Width The width of the I/O operation.
@param Data The value to write to the I/O port.
@return Data read from registers in the EFI system memory space.
**/
UINT64
EFIAPI
MmioWriteWorker (
IN UINTN Address,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Data
);
#endif
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