mirror of https://github.com/acidanthera/audk.git
Revert "OvmfPkg/QemuVideoDxe: Helper functions for unaligned port I/O."
This reverts commit05a5379458
. The VMWare SVGA display device implemented by Qemu (-vga vmware) uses an I/O-type BAR which is laid out such that some register offsets are not aligned to the read/write width with which they are expected to be accessed. However, we reverted the initialization of VMWare SVGA device, we don't need such unaligned I/O. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: yuchenlin <yuchenlin@synology.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com> (cherry picked from commit438ada5aa5
) Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
parent
1358ecb77f
commit
9442266c70
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@ -41,15 +41,9 @@
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Qemu.h
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[Sources.Ia32, Sources.X64]
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UnalignedIoGcc.c | GCC
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UnalignedIoIcc.c | INTEL
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UnalignedIoMsc.c | MSFT
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VbeShim.c
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VbeShim.h
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[Sources.EBC]
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UnalignedIoUnsupported.c
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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@ -1,70 +0,0 @@
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/** @file
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Unaligned Port I/O. 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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Based on IoLibGcc.c.
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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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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#include "UnalignedIoInternal.h"
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/**
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Performs a 32-bit write to the specified, possibly unaligned I/O-type
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address.
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Writes the 32-bit I/O port specified by Port with the value specified by
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Value and returns Value. This function must guarantee that all I/O read and
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write operations are serialized.
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If 32-bit unaligned I/O port operations are not supported, then ASSERT().
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@param[in] Port I/O port address
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@param[in] Value 32-bit word to write
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@return The value written to the I/O port.
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**/
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UINT32
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UnalignedIoWrite32 (
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IN UINTN Port,
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IN UINT32 Value
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)
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{
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__asm__ __volatile__ ( "outl %0, %1" : : "a" (Value), "d" ((UINT16)Port) );
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return Value;
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}
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/**
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Reads a 32-bit word from the specified, possibly unaligned I/O-type address.
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Reads the 32-bit I/O port specified by Port. The 32-bit read value is
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returned. This function must guarantee that all I/O read and write operations
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are serialized.
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If 32-bit unaligned I/O port operations are not supported, then ASSERT().
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@param[in] Port The I/O port to read.
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@return The value read.
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**/
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UINT32
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UnalignedIoRead32 (
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IN UINTN Port
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)
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{
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UINT32 Data;
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__asm__ __volatile__ ( "inl %1, %0" : "=a" (Data) : "d" ((UINT16)Port) );
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return Data;
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}
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@ -1,80 +0,0 @@
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/** @file
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Unaligned port I/O. This file has compiler specifics for ICC as there
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is no ANSI C standard for doing IO.
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Based on IoLibIcc.c.
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Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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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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#include "UnalignedIoInternal.h"
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/**
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Performs a 32-bit write to the specified, possibly unaligned I/O-type
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address.
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Writes the 32-bit I/O port specified by Port with the value specified by
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Value and returns Value. This function must guarantee that all I/O read and
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write operations are serialized.
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If 32-bit unaligned I/O port operations are not supported, then ASSERT().
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@param[in] Port I/O port address
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@param[in] Value 32-bit word to write
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@return The value written to the I/O port.
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**/
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UINT32
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UnalignedIoWrite32 (
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IN UINTN Port,
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IN UINT32 Value
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)
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{
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__asm {
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mov eax, dword ptr [Value]
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mov dx, word ptr [Port]
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out dx, eax
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}
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return Value;
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}
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/**
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Reads a 32-bit word from the specified, possibly unaligned I/O-type address.
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Reads the 32-bit I/O port specified by Port. The 32-bit read value is
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returned. This function must guarantee that all I/O read and write operations
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are serialized.
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If 32-bit unaligned I/O port operations are not supported, then ASSERT().
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@param[in] Port The I/O port to read.
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@return The value read.
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**/
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UINT32
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UnalignedIoRead32 (
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IN UINTN Port
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)
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{
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UINT32 Data;
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__asm {
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mov dx, word ptr [Port]
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in eax, dx
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mov dword ptr [Data], eax
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}
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return Data;
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}
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@ -1,59 +0,0 @@
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/** @file
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Unaligned port I/O, with implementations for various x86 compilers and a
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dummy for platforms which do not support unaligned port I/O.
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Copyright (c) 2017, Phil Dennis-Jordan.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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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 _UNALIGNED_IO_INTERNAL_H_
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#define _UNALIGNED_IO_INTERNAL_H_
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/**
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Performs a 32-bit write to the specified, possibly unaligned I/O-type address.
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Writes the 32-bit I/O port specified by Port with the value specified by Value
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and returns Value. This function must guarantee that all I/O read and write
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operations are serialized.
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If 32-bit unaligned I/O port operations are not supported, then ASSERT().
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@param[in] Port I/O port address
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@param[in] Value 32-bit word to write
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@return The value written to the I/O port.
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**/
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UINT32
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UnalignedIoWrite32 (
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IN UINTN Port,
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IN UINT32 Value
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);
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/**
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Reads a 32-bit word from the specified, possibly unaligned I/O-type address.
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Reads the 32-bit I/O port specified by Port. The 32-bit read value is
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returned. This function must guarantee that all I/O read and write operations
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are serialized.
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If 32-bit unaligned I/O port operations are not supported, then ASSERT().
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@param[in] Port The I/O port to read.
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@return The value read.
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**/
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UINT32
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UnalignedIoRead32 (
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IN UINTN Port
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);
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#endif
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@ -1,78 +0,0 @@
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/** @file
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Unaligned port I/O. This file has compiler specifics for Microsoft C as there
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is no ANSI C standard for doing IO.
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Based on IoLibMsc.c
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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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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#include "UnalignedIoInternal.h"
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unsigned long _inpd (unsigned short port);
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unsigned long _outpd (unsigned short port, unsigned long dataword );
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void _ReadWriteBarrier (void);
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/**
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Performs a 32-bit write to the specified, possibly unaligned I/O-type
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address.
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Writes the 32-bit I/O port specified by Port with the value specified by
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Value and returns Value. This function must guarantee that all I/O read and
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write operations are serialized.
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If 32-bit unaligned I/O port operations are not supported, then ASSERT().
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@param[in] Port I/O port address
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@param[in] Value 32-bit word to write
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@return The value written to the I/O port.
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**/
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UINT32
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UnalignedIoWrite32 (
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IN UINTN Port,
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IN UINT32 Value
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)
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{
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_ReadWriteBarrier ();
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_outpd ((UINT16)Port, Value);
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_ReadWriteBarrier ();
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return Value;
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}
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/**
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Reads a 32-bit word from the specified, possibly unaligned I/O-type address.
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Reads the 32-bit I/O port specified by Port. The 32-bit read value is
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returned. This function must guarantee that all I/O read and write operations
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are serialized.
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If 32-bit unaligned I/O port operations are not supported, then ASSERT().
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@param[in] Port The I/O port to read.
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@return The value read.
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**/
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UINT32
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UnalignedIoRead32 (
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IN UINTN Port
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)
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{
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UINT32 Value;
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_ReadWriteBarrier ();
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Value = _inpd ((UINT16)Port);
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_ReadWriteBarrier ();
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return Value;
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}
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@ -1,66 +0,0 @@
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/** @file
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Unaligned port I/O dummy implementation for platforms which do not support it.
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Copyright (c) 2017, Phil Dennis-Jordan.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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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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#include <Library/DebugLib.h>
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#include "UnalignedIoInternal.h"
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/**
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Performs a 32-bit write to the specified, possibly unaligned I/O-type
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address.
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Writes the 32-bit I/O port specified by Port with the value specified by
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Value and returns Value. This function must guarantee that all I/O read and
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write operations are serialized.
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If 32-bit unaligned I/O port operations are not supported, then ASSERT().
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@param[in] Port I/O port address
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@param[in] Value 32-bit word to write
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@return The value written to the I/O port.
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**/
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UINT32
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UnalignedIoWrite32 (
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IN UINTN Port,
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IN UINT32 Value
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)
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{
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ASSERT (FALSE);
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return Value;
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}
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/**
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Reads a 32-bit word from the specified, possibly unaligned I/O-type address.
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Reads the 32-bit I/O port specified by Port. The 32-bit read value is
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returned. This function must guarantee that all I/O read and write operations
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are serialized.
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If 32-bit unaligned I/O port operations are not supported, then ASSERT().
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@param[in] Port The I/O port to read.
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@return The value read.
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**/
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UINT32
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UnalignedIoRead32 (
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IN UINTN Port
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)
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{
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ASSERT (FALSE);
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return 0;
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}
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