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Clean up CpuIoDxe:

Browse Source 
1. Remove the assembly files by using IoLib in MdePkg.
2. Remove the unused DXS file.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7402 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8 2009-02-03 00:45:16 +00:00
parent 8e6a99100c
commit 8c7f0932d6
8 changed files with 7 additions and 621 deletions
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13
DuetPkg/CpuIoDxe/CpuIo.c
View File

@ -23,7 +23,6 @@ Abstract:
--*/
#include "CpuIo.h"
#include "CpuIoAccess.h"
#define IA32_MAX_IO_ADDRESS 0xFFFF
@ -313,19 +312,19 @@ Returns:
switch (Width) {
case EfiCpuIoWidthUint8:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
*Buffer.ui8 = CpuIoRead8 ((UINT16) Address);
*Buffer.ui8 = IoRead8 ((UINTN) Address);
}
break;
case EfiCpuIoWidthUint16:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
*Buffer.ui16 = CpuIoRead16 ((UINT16) Address);
*Buffer.ui16 = IoRead16 ((UINTN) Address);
}
break;
case EfiCpuIoWidthUint32:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
*Buffer.ui32 = CpuIoRead32 ((UINT16) Address);
*Buffer.ui32 = IoRead32 ((UINTN) Address);
}
break;
@ -406,19 +405,19 @@ Returns:
switch (Width) {
case EfiCpuIoWidthUint8:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
CpuIoWrite8 ((UINT16) Address, *Buffer.ui8);
IoWrite8 ((UINTN) Address, *Buffer.ui8);
}
break;
case EfiCpuIoWidthUint16:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
CpuIoWrite16 ((UINT16) Address, *Buffer.ui16);
IoWrite16 ((UINTN) Address, *Buffer.ui16);
}
break;
case EfiCpuIoWidthUint32:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
CpuIoWrite32 ((UINT16) Address, *Buffer.ui32);
IoWrite32 ((UINTN) Address, *Buffer.ui32);
}
break;

1
DuetPkg/CpuIoDxe/CpuIo.h
View File

@ -32,6 +32,7 @@ Abstract:
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
typedef union {
UINT8 volatile *buf;

9
DuetPkg/CpuIoDxe/CpuIo.inf
View File

@ -44,15 +44,6 @@
[Sources.common]
CpuIo.c
CpuIo.h
CpuIoAccess.h
[Sources.IA32]
Ia32/CpuIoAccess.asm | MSFT
Ia32/CpuIoAccess.asm | INTEL
Ia32/CpuIoAccessGNU.c | GCC
[Sources.X64]
X64/CpuIoAccess.asm
[Protocols]
gEfiCpuIoProtocolGuid

214
DuetPkg/CpuIoDxe/CpuIoAccess.h
View File

@ -1,214 +0,0 @@
/*++
#
# Copyright (c) 2004, 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:
CpuIoAccess.h
Abstract:
--*/
#ifndef _CPU_IO_ACCESS_H
#define _CPU_IO_ACCESS_H
UINT8
EFIAPI
CpuIoRead8 (
IN UINT16 Port
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Port - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/*++
Routine Description:
Cpu I/O read port
Arguments:
Port: - Port number to read
Returns:
Return read 8 bit value
--*/
UINT16
EFIAPI
CpuIoRead16 (
IN UINT16 Port
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Port - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/*++
Routine Description:
Cpu I/O read port
Arguments:
Port: - Port number to read
Returns:
Return read 16 bit value
--*/
UINT32
EFIAPI
CpuIoRead32 (
IN UINT16 Port
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Port - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/*++
Routine Description:
Cpu I/O read port
Arguments:
Port: - Port number to read
Returns:
Return read 32 bit value
--*/
VOID
EFIAPI
CpuIoWrite8 (
IN UINT16 Port,
IN UINT32 Data
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Port - GC_TODO: add argument description
Data - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/*++
Routine Description:
Cpu I/O write 8 bit data to port
Arguments:
Port: - Port number to read
Data: - Data to write to the Port
Returns:
None
--*/
VOID
EFIAPI
CpuIoWrite16 (
IN UINT16 Port,
IN UINT32 Data
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Port - GC_TODO: add argument description
Data - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/*++
Routine Description:
Cpu I/O write 16 bit data to port
Arguments:
Port: - Port number to read
Data: - Data to write to the Port
Returns:
None
--*/
VOID
EFIAPI
CpuIoWrite32 (
IN UINT16 Port,
IN UINT32 Data
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Port - GC_TODO: add argument description
Data - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/*++
Routine Description:
Cpu I/O write 32 bit data to port
Arguments:
Port: - Port number to read
Data: - Data to write to the Port
Returns:
None
--*/
#endif

120
DuetPkg/CpuIoDxe/Ia32/CpuIoAccess.asm
View File

@ -1,120 +0,0 @@
title CpuIoAccess.asm
;------------------------------------------------------------------------------
;*
;* Copyright (c) 2005, 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:
;* CpuIoAccess.asm
;*
;* Abstract:
;* Supports IA32 CPU IO operation
;*
;------------------------------------------------------------------------------
;
;
;------------------------------------------------------------------------------
.686
.MODEL FLAT,C
.CODE
UINT8 TYPEDEF BYTE
UINT16 TYPEDEF WORD
UINT32 TYPEDEF DWORD
UINT64 TYPEDEF QWORD
UINTN TYPEDEF UINT32
;------------------------------------------------------------------------------
; UINT8
; CpuIoRead8 (
; IN UINT16 Port
; )
;------------------------------------------------------------------------------
CpuIoRead8 PROC PUBLIC Port:UINT16
mov dx, Port
in al, dx
ret
CpuIoRead8 ENDP
;------------------------------------------------------------------------------
; UINT16
; CpuIoRead16 (
; IN UINT16 Port
; )
;------------------------------------------------------------------------------
CpuIoRead16 PROC PUBLIC Port:UINT16
mov dx, Port
in ax, dx
ret
CpuIoRead16 ENDP
;------------------------------------------------------------------------------
; UINT32
; CpuIoRead32 (
; IN UINT16 Port
; )
;------------------------------------------------------------------------------
CpuIoRead32 PROC PUBLIC Port:UINT16
mov dx, Port
in eax, dx
ret
CpuIoRead32 ENDP
;------------------------------------------------------------------------------
; VOID
; CpuIoWrite8 (
; IN UINT16 Port,
; IN UINT32 Data
; )
;------------------------------------------------------------------------------
CpuIoWrite8 PROC PUBLIC Port:UINT16, Data:UINT32
mov eax, Data
mov dx, Port
out dx, al
ret
CpuIoWrite8 ENDP
;------------------------------------------------------------------------------
; VOID
; CpuIoWrite16 (
; IN UINT16 Port,
; IN UINT32 Data
; )
;------------------------------------------------------------------------------
CpuIoWrite16 PROC PUBLIC Port:UINT16, Data:UINT32
mov eax, Data
mov dx, Port
out dx, ax
ret
CpuIoWrite16 ENDP
;------------------------------------------------------------------------------
; VOID
; CpuIoWrite32 (
; IN UINT16 Port,
; IN UINT32 Data
; )
;------------------------------------------------------------------------------
CpuIoWrite32 PROC PUBLIC Port:UINT16, Data:UINT32
mov eax, Data
mov dx, Port
out dx, eax
ret
CpuIoWrite32 ENDP
END

134
DuetPkg/CpuIoDxe/Ia32/CpuIoAccessGNU.c
View File

@ -1,134 +0,0 @@
/* This file is only used when not able to compile the MASM CpuIoAccess.asm
NOTE: Compiling with -fomit-frame-pointer would get you to roughly the exact
same code as the MASM file although GCC will typically include movzbl %al, %eax
or movzwl %ax, %eax instructions on the read functions such that the entire
eax result register will be valid, not just the lowest 8 or 16 bits.
*/
#ifdef __GNUC__
/* A quick note about GCC inline asm and the GNU assembler:
When gas encounters an instruction with a suffix (e.g. inb, inw, or inl vs. just in) it will
warn if the operand corresponding to the suffix is not of the correct size and will assume you
meant what you said when you specified the suffix.
Because GCC does not enable us to see whether it is replacing %0 with %al, %ax, or %eax it is
helpful to have the assembler warn us that GCC is making an incorrect assumption. The actual
in or out instruction will always be generated correctly in this case since the assembler is
correct in assuming we meant what we said when we specified the suffix. However, GCC might
generate incorrect surrounding code. For example, if we were to incorrectly specify the
output size of an in instruction as UINT32, GCC would potentially fail to issue movz(b|w)l after
it under the assumption that the in instruction filled the entire eax register and not just
the al or ax portion.
GCC determines which size of register to use based on the C data type. So for in instructions
the interesting type is that of the automatic variable named Data which is specified as an
output operand to the inline assembly statement. For example:
UINT8 Data;
asm ( "inb %1, %0"
: "=a"(Data)
: "d"(Port)
);
return Data;
In this case, GCC will replace %0 with %al. If Data had been specified as UINT16, it would replace
%0 with %ax, and for UINT32 with %eax.
Likewise in the case of IA32 out instructions, GCC will replace %0 with the appropriately sized
register based on the size of the input operand. There is one gotcha though. The CpuIoWrite
series of functions all use UINT32 as the type of the second (Data) argument. This means that
for GCC to output the correct register size we must cast it appropriately.
The Port number is always a UINT16 so GCC will always ouput %dx.
*/
#include "CpuIoAccess.h"
UINT8
EFIAPI
CpuIoRead8 (
IN UINT16 Port
)
{
UINT8 Data;
asm ( "inb %1, %0"
: "=a"(Data)
: "d"(Port)
);
return Data;
}
UINT16
EFIAPI
CpuIoRead16 (
IN UINT16 Port
)
{
UINT16 Data;
asm ( "inw %1, %0"
: "=a"(Data)
: "d"(Port)
);
return Data;
}
UINT32
EFIAPI
CpuIoRead32 (
IN UINT16 Port
)
{
UINT32 Data;
asm ( "inl %1, %0"
: "=a"(Data)
: "d"(Port)
);
return Data;
}
VOID
EFIAPI
CpuIoWrite8 (
IN UINT16 Port,
IN UINT32 Data
)
{
asm ( "outb %1, %0"
: /* No outputs */
: "d"(Port)
, "a"((UINT8)Data)
);
}
VOID
EFIAPI
CpuIoWrite16 (
IN UINT16 Port,
IN UINT32 Data
)
{
asm ( "outw %1, %0"
: /* No outputs */
: "d"(Port)
, "a"((UINT16)Data)
);
}
VOID
EFIAPI
CpuIoWrite32 (
IN UINT16 Port,
IN UINT32 Data
)
{
asm ( "outl %1, %0"
: /* No outputs */
: "d"(Port)
/* NOTE: Cast is technically unnecessary but we use it to illustrate
that we always want to output a UINT32 and never anything else.
*/
, "a"((UINT32)Data)
);
}
#endif /* def __GNUC__ */

26
DuetPkg/CpuIoDxe/Ia32CpuIo.dxs
View File

@ -1,26 +0,0 @@
/*++
Copyright (c) 2004, 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:
Ia32CpuIo.dxs
Abstract:
Dependency expression source file.
--*/
#include "EfiDepex.h"
DEPENDENCY_START
TRUE
DEPENDENCY_END

111
DuetPkg/CpuIoDxe/X64/CpuIoAccess.asm
View File

@ -1,111 +0,0 @@
title CpuIoAccess.asm
;------------------------------------------------------------------------------
;*
;* Copyright (c) 2005 - 2007, 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:
;* CpuIoAccess.asm
;*
;* Abstract:
;* Supports x64 CPU IO operation
;*
;------------------------------------------------------------------------------
;
;
;
; Abstract:
;
;
;------------------------------------------------------------------------------
.CODE
;------------------------------------------------------------------------------
; UINT8
; CpuIoRead8 (
; UINT16 Port // rcx
; )
;------------------------------------------------------------------------------
CpuIoRead8 PROC PUBLIC
xor eax, eax
mov dx, cx
in al, dx
ret
CpuIoRead8 ENDP
;------------------------------------------------------------------------------
; VOID
; CpuIoWrite8 (
; UINT16 Port, // rcx
; UINT32 Data // rdx
; )
;------------------------------------------------------------------------------
CpuIoWrite8 PROC PUBLIC
mov eax, edx
mov dx, cx
out dx, al
ret
CpuIoWrite8 ENDP
;------------------------------------------------------------------------------
; UINT16
; CpuIoRead16 (
; UINT16 Port // rcx
; )
;------------------------------------------------------------------------------
CpuIoRead16 PROC PUBLIC
xor eax, eax
mov dx, cx
in ax, dx
ret
CpuIoRead16 ENDP
;------------------------------------------------------------------------------
; VOID
; CpuIoWrite16 (
; UINT16 Port, // rcx
; UINT32 Data // rdx
; )
;------------------------------------------------------------------------------
CpuIoWrite16 PROC PUBLIC
mov eax, edx
mov dx, cx
out dx, ax
ret
CpuIoWrite16 ENDP
;------------------------------------------------------------------------------
; UINT32
; CpuIoRead32 (
; UINT16 Port // rcx
; )
;------------------------------------------------------------------------------
CpuIoRead32 PROC PUBLIC
mov dx, cx
in eax, dx
ret
CpuIoRead32 ENDP
;------------------------------------------------------------------------------
; VOID
; CpuIoWrite32 (
; UINT16 Port, // rcx
; UINT32 Data // rdx
; )
;------------------------------------------------------------------------------
CpuIoWrite32 PROC PUBLIC
mov eax, edx
mov dx, cx
out dx, eax
ret
CpuIoWrite32 ENDP
END