mirror of https://github.com/acidanthera/audk.git
Merge from edk2/MdePkg/Library/BaseIoLibIntrinsic to achieve better
support for additional compilers. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5277 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
parent
8e98644530
commit
e2955fba07
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@ -23,17 +23,21 @@
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||||||
BASE_NAME = EdkIIGlueBaseIoLibIntrinsic
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BASE_NAME = EdkIIGlueBaseIoLibIntrinsic
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COMPONENT_TYPE = LIBRARY
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COMPONENT_TYPE = LIBRARY
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[sources.common]
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[Sources.common]
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[sources.ia32]
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[Sources.Ia32]
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IoLib.c
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IoLibMsc.c
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IoHighLevel.c
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IoHighLevel.c
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IoLibGcc.c | GCC
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IoLibMsc.c | MSFT
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IoLibIcc.c | INTEL
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IoLib.c
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[sources.x64]
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[Sources.X64]
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IoLib.c
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IoLibMsc.c
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IoHighLevel.c
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IoHighLevel.c
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IoLibGcc.c | GCC
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IoLibMsc.c | MSFT
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IoLibIcc.c | INTEL
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IoLib.c
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[sources.ipf]
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[sources.ipf]
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IoLibIpf.c
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IoLibIpf.c
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@ -0,0 +1,28 @@
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/**@file
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Common header file shared by all source files.
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This file includes package header files, library classes and protocol, PPI & GUID definitions.
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Copyright (c) 2007, Intel Corporation.
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All rights reserved. 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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**/
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#ifndef __COMMON_HEADER_H_
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#define __COMMON_HEADER_H_
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#include <EdkIIGlueBase.h>
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#include <Library/EdkIIGlueIoLib.h>
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#include <Library/EdkIIGlueBaseLib.h>
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#include <Library/EdkIIGlueDebugLib.h>
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#include <Pcd/EdkIIGluePcd.h>
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#endif
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@ -0,0 +1,386 @@
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/** @file
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I/O Library. This file has compiler specifics for GCC as there is no
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ANSI C standard for doing IO.
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GCC - uses EFIAPI assembler. __asm__ calls GAS. __volatile__ makes sure the
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compiler puts the assembler in this exact location. The complex GNUC
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operations are not optimzed. It would be possible to also write these
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with EFIAPI assembler.
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We don't advocate putting compiler specifics in libraries or drivers but there
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is no other way to make this work.
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Copyright (c) 2006 - 2007, Intel Corporation<BR>
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All rights reserved. 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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|
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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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**/
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//
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// Include common header file for this module.
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//
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#include "BaseIoLibIntrinsicInternal.h"
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/**
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Reads an 8-bit MMIO register.
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Reads the 8-bit MMIO register specified by Address. The 8-bit read value is
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returned. This function must guarantee that all MMIO read and write
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operations are serialized.
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If 8-bit MMIO register operations are not supported, then ASSERT().
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@param Address The MMIO register to read.
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@return The value read.
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**/
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UINT8
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EFIAPI
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MmioRead8 (
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IN UINTN Address
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)
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|
{
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|
return *(volatile UINT8*)Address;
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}
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/**
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Writes an 8-bit MMIO register.
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Writes the 8-bit MMIO register specified by Address with the value specified
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by Value and returns Value. This function must guarantee that all MMIO read
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and write operations are serialized.
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If 8-bit MMIO register operations are not supported, then ASSERT().
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@param Address The MMIO register to write.
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@param Value The value to write to the MMIO register.
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**/
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UINT8
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EFIAPI
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MmioWrite8 (
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IN UINTN Address,
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IN UINT8 Value
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)
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{
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return *(volatile UINT8*)Address = Value;
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}
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/**
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Reads a 16-bit MMIO register.
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|
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Reads the 16-bit MMIO register specified by Address. The 16-bit read value is
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returned. This function must guarantee that all MMIO read and write
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operations are serialized.
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If 16-bit MMIO register operations are not supported, then ASSERT().
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@param Address The MMIO register to read.
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@return The value read.
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**/
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UINT16
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EFIAPI
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MmioRead16 (
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IN UINTN Address
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)
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{
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ASSERT ((Address & 1) == 0);
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return *(volatile UINT16*)Address;
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}
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/**
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Writes a 16-bit MMIO register.
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Writes the 16-bit MMIO register specified by Address with the value specified
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by Value and returns Value. This function must guarantee that all MMIO read
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and write operations are serialized.
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If 16-bit MMIO register operations are not supported, then ASSERT().
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@param Address The MMIO register to write.
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@param Value The value to write to the MMIO register.
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**/
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|
UINT16
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EFIAPI
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MmioWrite16 (
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IN UINTN Address,
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|
IN UINT16 Value
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||||||
|
)
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||||||
|
{
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|
ASSERT ((Address & 1) == 0);
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|
return *(volatile UINT16*)Address = Value;
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|
}
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|
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|
/**
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|
Reads a 32-bit MMIO register.
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Reads the 32-bit MMIO register specified by Address. The 32-bit read value is
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returned. This function must guarantee that all MMIO read and write
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operations are serialized.
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If 32-bit MMIO register operations are not supported, then ASSERT().
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@param Address The MMIO register to read.
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@return The value read.
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**/
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UINT32
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EFIAPI
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|
MmioRead32 (
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IN UINTN Address
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)
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{
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ASSERT ((Address & 3) == 0);
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return *(volatile UINT32*)Address;
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}
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/**
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Writes a 32-bit MMIO register.
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Writes the 32-bit MMIO register specified by Address with the value specified
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|
by Value and returns Value. This function must guarantee that all MMIO read
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and write operations are serialized.
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|
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||||||
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If 32-bit MMIO register operations are not supported, then ASSERT().
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@param Address The MMIO register to write.
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@param Value The value to write to the MMIO register.
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**/
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|
UINT32
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||||||
|
EFIAPI
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||||||
|
MmioWrite32 (
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|
IN UINTN Address,
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||||||
|
IN UINT32 Value
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||||||
|
)
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||||||
|
{
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||||||
|
ASSERT ((Address & 3) == 0);
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||||||
|
return *(volatile UINT32*)Address = Value;
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||||||
|
}
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||||||
|
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||||||
|
/**
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||||||
|
Reads a 64-bit MMIO register.
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||||||
|
|
||||||
|
Reads the 64-bit MMIO register specified by Address. The 64-bit read value is
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||||||
|
returned. This function must guarantee that all MMIO read and write
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|
operations are serialized.
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||||||
|
|
||||||
|
If 64-bit MMIO register operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Address The MMIO register to read.
|
||||||
|
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||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
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||||||
|
UINT64
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||||||
|
EFIAPI
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||||||
|
MmioRead64 (
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||||||
|
IN UINTN Address
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||||||
|
)
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||||||
|
{
|
||||||
|
ASSERT ((Address & 7) == 0);
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||||||
|
return *(volatile UINT64*)Address;
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||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes a 64-bit MMIO register.
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||||||
|
|
||||||
|
Writes the 64-bit MMIO register specified by Address with the value specified
|
||||||
|
by Value and returns Value. This function must guarantee that all MMIO read
|
||||||
|
and write operations are serialized.
|
||||||
|
|
||||||
|
If 64-bit MMIO register operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Address The MMIO register to write.
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||||||
|
@param Value The value to write to the MMIO register.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT64
|
||||||
|
EFIAPI
|
||||||
|
MmioWrite64 (
|
||||||
|
IN UINTN Address,
|
||||||
|
IN UINT64 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Address & 7) == 0);
|
||||||
|
return *(volatile UINT64*)Address = Value;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
Reads an 8-bit I/O port.
|
||||||
|
|
||||||
|
Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.
|
||||||
|
This function must guarantee that all I/O read and write operations are
|
||||||
|
serialized.
|
||||||
|
|
||||||
|
If 8-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to read.
|
||||||
|
|
||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
|
||||||
|
__inline__
|
||||||
|
UINT8
|
||||||
|
EFIAPI
|
||||||
|
IoRead8 (
|
||||||
|
IN UINTN Port
|
||||||
|
)
|
||||||
|
{
|
||||||
|
UINT8 Data;
|
||||||
|
|
||||||
|
__asm__ __volatile__ ("inb %w1,%b0" : "=a" (Data) : "d" ((UINT16)Port));
|
||||||
|
return Data;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes an 8-bit I/O port.
|
||||||
|
|
||||||
|
Writes the 8-bit I/O port specified by Port with the value specified by Value
|
||||||
|
and returns Value. This function must guarantee that all I/O read and write
|
||||||
|
operations are serialized.
|
||||||
|
|
||||||
|
If 8-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to write.
|
||||||
|
@param Value The value to write to the I/O port.
|
||||||
|
|
||||||
|
@return The value written the I/O port.
|
||||||
|
|
||||||
|
**/
|
||||||
|
__inline__
|
||||||
|
UINT8
|
||||||
|
EFIAPI
|
||||||
|
IoWrite8 (
|
||||||
|
IN UINTN Port,
|
||||||
|
IN UINT8 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
__asm__ __volatile__ ("outb %b0,%w1" : : "a" (Value), "d" ((UINT16)Port));
|
||||||
|
return Value;;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Reads a 16-bit I/O port.
|
||||||
|
|
||||||
|
Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned.
|
||||||
|
This function must guarantee that all I/O read and write operations are
|
||||||
|
serialized.
|
||||||
|
|
||||||
|
If 16-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to read.
|
||||||
|
|
||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
|
||||||
|
__inline__
|
||||||
|
UINT16
|
||||||
|
EFIAPI
|
||||||
|
IoRead16 (
|
||||||
|
IN UINTN Port
|
||||||
|
)
|
||||||
|
{
|
||||||
|
UINT16 Data;
|
||||||
|
|
||||||
|
ASSERT ((Port & 1) == 0);
|
||||||
|
__asm__ __volatile__ ("inw %w1,%w0" : "=a" (Data) : "d" ((UINT16)Port));
|
||||||
|
return Data;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes a 16-bit I/O port.
|
||||||
|
|
||||||
|
Writes the 16-bit I/O port specified by Port with the value specified by Value
|
||||||
|
and returns Value. This function must guarantee that all I/O read and write
|
||||||
|
operations are serialized.
|
||||||
|
|
||||||
|
If 16-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to write.
|
||||||
|
@param Value The value to write to the I/O port.
|
||||||
|
|
||||||
|
@return The value written the I/O port.
|
||||||
|
|
||||||
|
**/
|
||||||
|
__inline__
|
||||||
|
UINT16
|
||||||
|
EFIAPI
|
||||||
|
IoWrite16 (
|
||||||
|
IN UINTN Port,
|
||||||
|
IN UINT16 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Port & 1) == 0);
|
||||||
|
__asm__ __volatile__ ("outw %w0,%w1" : : "a" (Value), "d" ((UINT16)Port));
|
||||||
|
return Value;;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Reads a 32-bit I/O port.
|
||||||
|
|
||||||
|
Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.
|
||||||
|
This function must guarantee that all I/O read and write operations are
|
||||||
|
serialized.
|
||||||
|
|
||||||
|
If 32-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to read.
|
||||||
|
|
||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
|
||||||
|
__inline__
|
||||||
|
UINT32
|
||||||
|
EFIAPI
|
||||||
|
IoRead32 (
|
||||||
|
IN UINTN Port
|
||||||
|
)
|
||||||
|
{
|
||||||
|
UINT32 Data;
|
||||||
|
|
||||||
|
ASSERT ((Port & 3) == 0);
|
||||||
|
__asm__ __volatile__ ("inl %w1,%0" : "=a" (Data) : "d" ((UINT16)Port));
|
||||||
|
return Data;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes a 32-bit I/O port.
|
||||||
|
|
||||||
|
Writes the 32-bit I/O port specified by Port with the value specified by Value
|
||||||
|
and returns Value. This function must guarantee that all I/O read and write
|
||||||
|
operations are serialized.
|
||||||
|
|
||||||
|
If 32-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to write.
|
||||||
|
@param Value The value to write to the I/O port.
|
||||||
|
|
||||||
|
@return The value written the I/O port.
|
||||||
|
|
||||||
|
**/
|
||||||
|
__inline__
|
||||||
|
UINT32
|
||||||
|
EFIAPI
|
||||||
|
IoWrite32 (
|
||||||
|
IN UINTN Port,
|
||||||
|
IN UINT32 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Port & 3) == 0);
|
||||||
|
__asm__ __volatile__ ("outl %0,%w1" : : "a" (Value), "d" ((UINT16)Port));
|
||||||
|
return Value;
|
||||||
|
}
|
||||||
|
|
|
@ -0,0 +1,408 @@
|
||||||
|
/** @file
|
||||||
|
I/O Library. This file has compiler specifics for ICC as there
|
||||||
|
is no ANSI C standard for doing IO.
|
||||||
|
|
||||||
|
Copyright (c) 2006 - 2007, Intel Corporation<BR> 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.
|
||||||
|
|
||||||
|
**/
|
||||||
|
|
||||||
|
//
|
||||||
|
// Include common header file for this module.
|
||||||
|
//
|
||||||
|
#include "BaseIoLibIntrinsicInternal.h"
|
||||||
|
|
||||||
|
/**
|
||||||
|
Reads an 8-bit MMIO register.
|
||||||
|
|
||||||
|
Reads the 8-bit MMIO register specified by Address. The 8-bit read value is
|
||||||
|
returned. This function must guarantee that all MMIO read and write
|
||||||
|
operations are serialized.
|
||||||
|
|
||||||
|
If 8-bit MMIO register operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Address The MMIO register to read.
|
||||||
|
|
||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT8
|
||||||
|
EFIAPI
|
||||||
|
MmioRead8 (
|
||||||
|
IN UINTN Address
|
||||||
|
)
|
||||||
|
{
|
||||||
|
return *(volatile UINT8*)Address;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes an 8-bit MMIO register.
|
||||||
|
|
||||||
|
Writes the 8-bit MMIO register specified by Address with the value specified
|
||||||
|
by Value and returns Value. This function must guarantee that all MMIO read
|
||||||
|
and write operations are serialized.
|
||||||
|
|
||||||
|
If 8-bit MMIO register operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Address The MMIO register to write.
|
||||||
|
@param Value The value to write to the MMIO register.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT8
|
||||||
|
EFIAPI
|
||||||
|
MmioWrite8 (
|
||||||
|
IN UINTN Address,
|
||||||
|
IN UINT8 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
return *(volatile UINT8*)Address = Value;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Reads a 16-bit MMIO register.
|
||||||
|
|
||||||
|
Reads the 16-bit MMIO register specified by Address. The 16-bit read value is
|
||||||
|
returned. This function must guarantee that all MMIO read and write
|
||||||
|
operations are serialized.
|
||||||
|
|
||||||
|
If 16-bit MMIO register operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Address The MMIO register to read.
|
||||||
|
|
||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT16
|
||||||
|
EFIAPI
|
||||||
|
MmioRead16 (
|
||||||
|
IN UINTN Address
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Address & 1) == 0);
|
||||||
|
return *(volatile UINT16*)Address;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes a 16-bit MMIO register.
|
||||||
|
|
||||||
|
Writes the 16-bit MMIO register specified by Address with the value specified
|
||||||
|
by Value and returns Value. This function must guarantee that all MMIO read
|
||||||
|
and write operations are serialized.
|
||||||
|
|
||||||
|
If 16-bit MMIO register operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Address The MMIO register to write.
|
||||||
|
@param Value The value to write to the MMIO register.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT16
|
||||||
|
EFIAPI
|
||||||
|
MmioWrite16 (
|
||||||
|
IN UINTN Address,
|
||||||
|
IN UINT16 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Address & 1) == 0);
|
||||||
|
return *(volatile UINT16*)Address = Value;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Reads a 32-bit MMIO register.
|
||||||
|
|
||||||
|
Reads the 32-bit MMIO register specified by Address. The 32-bit read value is
|
||||||
|
returned. This function must guarantee that all MMIO read and write
|
||||||
|
operations are serialized.
|
||||||
|
|
||||||
|
If 32-bit MMIO register operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Address The MMIO register to read.
|
||||||
|
|
||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT32
|
||||||
|
EFIAPI
|
||||||
|
MmioRead32 (
|
||||||
|
IN UINTN Address
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Address & 3) == 0);
|
||||||
|
return *(volatile UINT32*)Address;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes a 32-bit MMIO register.
|
||||||
|
|
||||||
|
Writes the 32-bit MMIO register specified by Address with the value specified
|
||||||
|
by Value and returns Value. This function must guarantee that all MMIO read
|
||||||
|
and write operations are serialized.
|
||||||
|
|
||||||
|
If 32-bit MMIO register operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Address The MMIO register to write.
|
||||||
|
@param Value The value to write to the MMIO register.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT32
|
||||||
|
EFIAPI
|
||||||
|
MmioWrite32 (
|
||||||
|
IN UINTN Address,
|
||||||
|
IN UINT32 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Address & 3) == 0);
|
||||||
|
return *(volatile UINT32*)Address = Value;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Reads a 64-bit MMIO register.
|
||||||
|
|
||||||
|
Reads the 64-bit MMIO register specified by Address. The 64-bit read value is
|
||||||
|
returned. This function must guarantee that all MMIO read and write
|
||||||
|
operations are serialized.
|
||||||
|
|
||||||
|
If 64-bit MMIO register operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Address The MMIO register to read.
|
||||||
|
|
||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT64
|
||||||
|
EFIAPI
|
||||||
|
MmioRead64 (
|
||||||
|
IN UINTN Address
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Address & 7) == 0);
|
||||||
|
return *(volatile UINT64*)Address;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes a 64-bit MMIO register.
|
||||||
|
|
||||||
|
Writes the 64-bit MMIO register specified by Address with the value specified
|
||||||
|
by Value and returns Value. This function must guarantee that all MMIO read
|
||||||
|
and write operations are serialized.
|
||||||
|
|
||||||
|
If 64-bit MMIO register operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Address The MMIO register to write.
|
||||||
|
@param Value The value to write to the MMIO register.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT64
|
||||||
|
EFIAPI
|
||||||
|
MmioWrite64 (
|
||||||
|
IN UINTN Address,
|
||||||
|
IN UINT64 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Address & 7) == 0);
|
||||||
|
return *(volatile UINT64*)Address = Value;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
Reads an 8-bit I/O port.
|
||||||
|
|
||||||
|
Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.
|
||||||
|
This function must guarantee that all I/O read and write operations are
|
||||||
|
serialized.
|
||||||
|
|
||||||
|
If 8-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to read.
|
||||||
|
|
||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT8
|
||||||
|
EFIAPI
|
||||||
|
IoRead8 (
|
||||||
|
IN UINTN Port
|
||||||
|
)
|
||||||
|
{
|
||||||
|
UINT8 Data;
|
||||||
|
|
||||||
|
__asm {
|
||||||
|
mov dx, word ptr [Port]
|
||||||
|
in al, dx
|
||||||
|
|
||||||
|
mov Data, al
|
||||||
|
}
|
||||||
|
return Data;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes an 8-bit I/O port.
|
||||||
|
|
||||||
|
Writes the 8-bit I/O port specified by Port with the value specified by Value
|
||||||
|
and returns Value. This function must guarantee that all I/O read and write
|
||||||
|
operations are serialized.
|
||||||
|
|
||||||
|
If 8-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to write.
|
||||||
|
@param Value The value to write to the I/O port.
|
||||||
|
|
||||||
|
@return The value written the I/O port.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT8
|
||||||
|
EFIAPI
|
||||||
|
IoWrite8 (
|
||||||
|
IN UINTN Port,
|
||||||
|
IN UINT8 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
__asm {
|
||||||
|
mov al, byte ptr [Value]
|
||||||
|
mov dx, word ptr [Port]
|
||||||
|
out dx, al
|
||||||
|
}
|
||||||
|
return Value;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Reads a 16-bit I/O port.
|
||||||
|
|
||||||
|
Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned.
|
||||||
|
This function must guarantee that all I/O read and write operations are
|
||||||
|
serialized.
|
||||||
|
|
||||||
|
If 16-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to read.
|
||||||
|
|
||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT16
|
||||||
|
EFIAPI
|
||||||
|
IoRead16 (
|
||||||
|
IN UINTN Port
|
||||||
|
)
|
||||||
|
{
|
||||||
|
UINT16 Data;
|
||||||
|
|
||||||
|
ASSERT ((Port & 1) == 0);
|
||||||
|
|
||||||
|
__asm {
|
||||||
|
mov dx, word ptr [Port]
|
||||||
|
in ax, dx
|
||||||
|
mov word ptr [Data], ax
|
||||||
|
}
|
||||||
|
|
||||||
|
return Data;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes a 16-bit I/O port.
|
||||||
|
|
||||||
|
Writes the 16-bit I/O port specified by Port with the value specified by Value
|
||||||
|
and returns Value. This function must guarantee that all I/O read and write
|
||||||
|
operations are serialized.
|
||||||
|
|
||||||
|
If 16-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to write.
|
||||||
|
@param Value The value to write to the I/O port.
|
||||||
|
|
||||||
|
@return The value written the I/O port.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT16
|
||||||
|
EFIAPI
|
||||||
|
IoWrite16 (
|
||||||
|
IN UINTN Port,
|
||||||
|
IN UINT16 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Port & 1) == 0);
|
||||||
|
|
||||||
|
__asm {
|
||||||
|
mov ax, word ptr [Value]
|
||||||
|
mov dx, word ptr [Port]
|
||||||
|
out dx, ax
|
||||||
|
}
|
||||||
|
|
||||||
|
//
|
||||||
|
// Never reached return statement.
|
||||||
|
//
|
||||||
|
return Value;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Reads a 32-bit I/O port.
|
||||||
|
|
||||||
|
Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.
|
||||||
|
This function must guarantee that all I/O read and write operations are
|
||||||
|
serialized.
|
||||||
|
|
||||||
|
If 32-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to read.
|
||||||
|
|
||||||
|
@return The value read.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT32
|
||||||
|
EFIAPI
|
||||||
|
IoRead32 (
|
||||||
|
IN UINTN Port
|
||||||
|
)
|
||||||
|
{
|
||||||
|
UINT32 Data;
|
||||||
|
|
||||||
|
ASSERT ((Port & 3) == 0);
|
||||||
|
|
||||||
|
__asm {
|
||||||
|
mov dx, word ptr [Port]
|
||||||
|
in eax, dx
|
||||||
|
mov dword ptr [Data], eax
|
||||||
|
}
|
||||||
|
|
||||||
|
return Data;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
Writes a 32-bit I/O port.
|
||||||
|
|
||||||
|
Writes the 32-bit I/O port specified by Port with the value specified by Value
|
||||||
|
and returns Value. This function must guarantee that all I/O read and write
|
||||||
|
operations are serialized.
|
||||||
|
|
||||||
|
If 32-bit I/O port operations are not supported, then ASSERT().
|
||||||
|
|
||||||
|
@param Port The I/O port to write.
|
||||||
|
@param Value The value to write to the I/O port.
|
||||||
|
|
||||||
|
@return The value written the I/O port.
|
||||||
|
|
||||||
|
**/
|
||||||
|
UINT32
|
||||||
|
EFIAPI
|
||||||
|
IoWrite32 (
|
||||||
|
IN UINTN Port,
|
||||||
|
IN UINT32 Value
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ASSERT ((Port & 3) == 0);
|
||||||
|
|
||||||
|
__asm {
|
||||||
|
mov eax, dword ptr [Value]
|
||||||
|
mov dx, word ptr [Port]
|
||||||
|
out dx, eax
|
||||||
|
}
|
||||||
|
|
||||||
|
return Value;
|
||||||
|
}
|
||||||
|
|
Loading…
Reference in New Issue