2b3687dbb5
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10404 6f19259b-4bc3-4df7-8a09-765794883524
123 lines
4.1 KiB
C
123 lines
4.1 KiB
C
/** @file
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Internal include file of DXE CPU IO Library.
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It includes all necessary protocol/library class's header file
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for implementation of IoLib library instance. It is included
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all source code of this library instance.
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name: DxeCpuIoLibInternal.h
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**/
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#ifndef _DXE_CPUIO_LIB_INTERNAL_H_
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#define _DXE_CPUIO_LIB_INTERNAL_H_
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#include <FrameworkDxe.h>
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#include <Protocol/CpuIo.h>
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#include <Library/IoLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseLib.h>
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/**
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Reads registers in the EFI CPU I/O space.
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Reads the I/O port specified by Port with registers width specified by Width.
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The read value is returned. If such operations are not supported, then ASSERT().
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This function must guarantee that all I/O read and write operations are serialized.
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@param Port The base address of the I/O operation.
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The caller is responsible for aligning the Address if required.
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@param Width The width of the I/O operation.
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@return Data read from registers in the EFI CPU I/O space.
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**/
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UINT64
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EFIAPI
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IoReadWorker (
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IN UINTN Port,
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IN EFI_CPU_IO_PROTOCOL_WIDTH Width
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);
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/**
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Writes registers in the EFI CPU I/O space.
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Writes the I/O port specified by Port with registers width and value specified by Width
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and Data respectively. Data is returned. If such operations are not supported, then ASSERT().
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This function must guarantee that all I/O read and write operations are serialized.
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@param Port The base address of the I/O operation.
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The caller is responsible for aligning the Address if required.
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@param Width The width of the I/O operation.
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@param Data The value to write to the I/O port.
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@return The paramter of Data.
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**/
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UINT64
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EFIAPI
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IoWriteWorker (
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IN UINTN Port,
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IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
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IN UINT64 Data
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);
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/**
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Reads memory-mapped registers in the EFI system memory space.
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Reads the MMIO registers specified by Address with registers width specified by Width.
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The read value is returned. If such operations are not supported, then ASSERT().
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This function must guarantee that all MMIO read and write operations are serialized.
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@param Address The MMIO register to read.
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The caller is responsible for aligning the Address if required.
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@param Width The width of the I/O operation.
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@return Data read from registers in the EFI system memory space.
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**/
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UINT64
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EFIAPI
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MmioReadWorker (
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IN UINTN Address,
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IN EFI_CPU_IO_PROTOCOL_WIDTH Width
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);
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/**
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Writes memory-mapped registers in the EFI system memory space.
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Writes the MMIO registers specified by Address with registers width and value specified by Width
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and Data respectively. Data is returned. If such operations are not supported, then ASSERT().
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This function must guarantee that all MMIO read and write operations are serialized.
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@param Address The MMIO register to read.
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The caller is responsible for aligning the Address if required.
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@param Width The width of the I/O operation.
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@param Data The value to write to the I/O port.
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@return Data read from registers in the EFI system memory space.
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**/
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UINT64
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EFIAPI
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MmioWriteWorker (
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IN UINTN Address,
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IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
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IN UINT64 Data
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);
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#endif
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