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Check in driver to produce CPU I/O 2 Protocol for IA32 and X64 architecture. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9522 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
xli24 2009-12-07 03:09:04 +00:00
parent 3f27582684
commit 3ca55ed48d
7 changed files with 755 additions and 827 deletions
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562
UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.c Normal file
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/** @file
Produces the CPU I/O 2 Protocol.
Copyright (c) 2009, 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.
**/
#include "CpuIo2Dxe.h"
EFI_HANDLE mHandle = NULL;
EFI_CPU_IO2_PROTOCOL mCpuIo = {
{
CpuMemoryServiceRead,
CpuMemoryServiceWrite
},
{
CpuIoServiceRead,
CpuIoServiceWrite
}
};
/**
Worker function to check the validation of parameters for CPU I/O interface functions.
This function check the validation of parameters for CPU I/O interface functions.
@param Width Width of the Mmio/Io operation
@param Address Base address of the Mmio/Io operation
@param Count Count of the number of accesses to perform
@param Buffer Pointer to the buffer to read from memory
@param Limit Maximum address supported
@retval EFI_INVALID_PARAMETER Buffer is NULL
@retval EFI_UNSUPPORTED The address range specified by Width, Address and Count is invalid
@retval EFI_UNSUPPORTED The memory buffer is not aligned
@retval EFI_SUCCESS Parameters are valid
**/
EFI_STATUS
CpuIoCheckParameter (
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer,
IN UINT64 Limit
)
{
UINTN AlignMask;
if (Buffer == NULL) {
return EFI_INVALID_PARAMETER;
}
if (Address > Limit) {
return EFI_UNSUPPORTED;
}
//
// For FiFo type, the target address won't increase during the access,
// so treat count as 1
//
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
Count = 1;
}
Width = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);
if (Address - 1 + (UINT32)(1 << Width) * Count > Limit) {
return EFI_UNSUPPORTED;
}
AlignMask = (1 << Width) - 1;
if ((UINTN) Buffer & AlignMask) {
return EFI_UNSUPPORTED;
}
return EFI_SUCCESS;
}
/**
Worker function to update access width and count for access to the unaligned address.
Unaligned Io/MmIo address access, break up the request into word by word or byte by byte.
@param Address Base address of the Mmio/Io operation
@param PtrWidth Pointer to width of the Mmio/Io operation
Out, this value will be updated for access to the unaligned address.
@param PtrCount Pointer to count of the number of accesses to perform
Out, this value will be updated for access to the unaligned address.
**/
VOID
CpuIoUpdateWidthCount (
IN UINT64 Address,
IN OUT EFI_CPU_IO_PROTOCOL_WIDTH *PtrWidth,
IN OUT UINTN *PtrCount
)
{
EFI_CPU_IO_PROTOCOL_WIDTH BufferWidth;
UINTN BufferCount;
BufferWidth = *PtrWidth;
BufferCount = *PtrCount;
switch (BufferWidth) {
case EfiCpuIoWidthUint8:
break;
case EfiCpuIoWidthUint16:
if ((Address & 0x01) == 0) {
break;
} else {
BufferCount = BufferCount * 2;
BufferWidth = EfiCpuIoWidthUint8;
}
break;
case EfiCpuIoWidthUint32:
if ((Address & 0x03) == 0) {
break;
} else if ((Address & 0x01) == 0) {
BufferCount = BufferCount * 2;
BufferWidth = EfiCpuIoWidthUint16;
} else {
BufferCount = BufferCount * 4;
BufferWidth = EfiCpuIoWidthUint8;
}
break;
case EfiCpuIoWidthUint64:
if ((Address & 0x07) == 0) {
break;
} else if ((Address & 0x03) == 0) {
BufferCount = BufferCount * 2;
BufferWidth = EfiCpuIoWidthUint32;
} else if ((Address & 0x01) == 0) {
BufferCount = BufferCount * 4;
BufferWidth = EfiCpuIoWidthUint16;
} else {
BufferCount = BufferCount * 8;
BufferWidth = EfiCpuIoWidthUint8;
}
break;
default:
return;
}
*PtrWidth = BufferWidth;
*PtrCount = BufferCount;
return;
}
/**
Worker function to perform memory mapped I/O read/write
This function provides private services to perform memory mapped I/O read/write.
@param Width Width of the memory mapped I/O operation
@param Count Count of the number of accesses to perform
@param DestinationStrideFlag Boolean flag indicates if the destination is to be incremented
@param Destination Destination of the memory mapped I/O operation
@param SourceStrideFlag Boolean flag indicates if the source is to be incremented
@param Source Source of the memory mapped I/O operation
@retval EFI_SUCCESS Successful operation
@retval EFI_INVALID_PARAMETER Width is invalid
**/
EFI_STATUS
CpuIoMemRW (
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINTN Count,
IN BOOLEAN DestinationStrideFlag,
OUT PTR Destination,
IN BOOLEAN SourceStrideFlag,
IN PTR Source
)
{
UINTN Stride;
UINTN DestinationStride;
UINTN SourceStride;
Width = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);
Stride = (UINT32)(1 << Width);
DestinationStride = DestinationStrideFlag ? Stride : 0;
SourceStride = SourceStrideFlag ? Stride : 0;
//
// Loop for each iteration and move the data
//
switch (Width) {
case EfiCpuIoWidthUint8:
for (; Count > 0; Count--, Destination.Buf += DestinationStride, Source.Buf += SourceStride) {
MmioWrite8((UINTN)Destination.Ui8 , MmioRead8((UINTN)Source.Ui8));
}
break;
case EfiCpuIoWidthUint16:
for (; Count > 0; Count--, Destination.Buf += DestinationStride, Source.Buf += SourceStride) {
MmioWrite16((UINTN)Destination.Ui16 , MmioRead16((UINTN)Source.Ui16));
}
break;
case EfiCpuIoWidthUint32:
for (; Count > 0; Count--, Destination.Buf += DestinationStride, Source.Buf += SourceStride) {
MmioWrite32((UINTN)Destination.Ui32 , MmioRead32((UINTN)Source.Ui32));
}
break;
case EfiCpuIoWidthUint64:
for (; Count > 0; Count--, Destination.Buf += DestinationStride, Source.Buf += SourceStride) {
MmioWrite64((UINTN)Destination.Ui64 , MmioRead64((UINTN)Source.Ui64));
}
break;
default:
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
/**
Enables a driver to read memory-mapped registers in the PI System memory space.
@param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
@param[in] Width Signifies the width of the memory operation.
@param[in] Address The base address of the memory operation.
@param[in] Count The number of memory operations to perform. The number of bytes moved
is Width size * Count, starting at Address.
@param[out] Buffer The destination buffer to store the results.
@retval EFI_SUCCESS The data was read from or written to the EFI system.
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system. Or Buffer is NULL.
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
**/
EFI_STATUS
EFIAPI
CpuMemoryServiceRead (
IN EFI_CPU_IO2_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
OUT VOID *Buffer
)
{
PTR Source;
PTR Destination;
EFI_STATUS Status;
EFI_CPU_IO_PROTOCOL_WIDTH BufferWidth;
Status = CpuIoCheckParameter (Width, Address, Count, Buffer, MAX_ADDRESS);
if (EFI_ERROR (Status)) {
return Status;
}
Destination.Buf = Buffer;
Source.Buf = (VOID *) (UINTN) Address;
//
// Support access to unaligned mmio address.
// Break up the request into byte by byte
//
BufferWidth = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);
CpuIoUpdateWidthCount (Address, &BufferWidth, &Count);
if (Width >= EfiCpuIoWidthUint8 && Width <= EfiCpuIoWidthUint64) {
return CpuIoMemRW (BufferWidth, Count, TRUE, Destination, TRUE, Source);
}
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
return CpuIoMemRW (BufferWidth, Count, TRUE, Destination, FALSE, Source);
}
if (Width >= EfiCpuIoWidthFillUint8 && Width <= EfiCpuIoWidthFillUint64) {
return CpuIoMemRW (BufferWidth, Count, FALSE, Destination, TRUE, Source);
}
return EFI_INVALID_PARAMETER;
}
/**
Enables a driver to write memory-mapped registers in the PI System memory space.
@param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
@param[in] Width Signifies the width of the memory operation.
@param[in] Address The base address of the memory operation.
@param[in] Count The number of memory operations to perform. The number of bytes moved
is Width size * Count, starting at Address.
@param[in] Buffer The source buffer from which to write data.
@retval EFI_SUCCESS The data was read from or written to the EFI system.
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system. Or Buffer is NULL.
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
**/
EFI_STATUS
EFIAPI
CpuMemoryServiceWrite (
IN EFI_CPU_IO2_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer
)
{
PTR Source;
PTR Destination;
EFI_STATUS Status;
EFI_CPU_IO_PROTOCOL_WIDTH BufferWidth;
Status = CpuIoCheckParameter (Width, Address, Count, Buffer, MAX_ADDRESS);
if (EFI_ERROR (Status)) {
return Status;
}
Destination.Buf = (VOID *) (UINTN) Address;
Source.Buf = Buffer;
//
// Support access to unaligned mmio address.
// Break up the request into byte by byte
//
BufferWidth = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);
CpuIoUpdateWidthCount (Address, &BufferWidth, &Count);
if (Width >= EfiCpuIoWidthUint8 && Width <= EfiCpuIoWidthUint64) {
return CpuIoMemRW (BufferWidth, Count, TRUE, Destination, TRUE, Source);
}
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
return CpuIoMemRW (BufferWidth, Count, FALSE, Destination, TRUE, Source);
}
if (Width >= EfiCpuIoWidthFillUint8 && Width <= EfiCpuIoWidthFillUint64) {
return CpuIoMemRW (BufferWidth, Count, TRUE, Destination, FALSE, Source);
}
return EFI_INVALID_PARAMETER;
}
/**
Enables a driver to read registers in the PI CPU I/O space.
@param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
@param[in] Width Signifies the width of the I/O operation.
@param[in] UserAddress The base address of the I/O operation. The caller is responsible
for aligning the Address if required.
@param[in] Count The number of I/O operations to perform. The number of bytes moved
is Width size * Count, starting at Address.
@param[out] UserBuffer The destination buffer to store the results.
@retval EFI_SUCCESS The data was read from or written to the EFI system.
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system. Or Buffer is NULL.
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
**/
EFI_STATUS
EFIAPI
CpuIoServiceRead (
IN EFI_CPU_IO2_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 UserAddress,
IN UINTN Count,
OUT VOID *UserBuffer
)
{
UINTN InStride;
UINTN OutStride;
UINTN Address;
PTR Buffer;
EFI_STATUS Status;
EFI_CPU_IO_PROTOCOL_WIDTH BufferWidth;
Buffer.Buf = (UINT8 *) UserBuffer;
if (Width >= EfiCpuIoWidthMaximum) {
return EFI_INVALID_PARAMETER;
}
Status = CpuIoCheckParameter (Width, UserAddress, Count, UserBuffer, IA32_MAX_IO_ADDRESS);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Support access to unaligned IO address.
// Break up the request into byte by byte
//
BufferWidth = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);
CpuIoUpdateWidthCount (UserAddress, &BufferWidth, &Count);
Address = (UINTN) UserAddress;
InStride = (UINT32)(1 << (BufferWidth & 0x03));
OutStride = InStride;
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
InStride = 0;
}
if (Width >= EfiCpuIoWidthFillUint8 && Width <= EfiCpuIoWidthFillUint64) {
OutStride = 0;
}
//
// Loop for each iteration and move the data
//
switch (BufferWidth) {
case EfiCpuIoWidthUint8:
for (; Count > 0; Count--, Buffer.Buf += OutStride, Address += InStride) {
*Buffer.Ui8 = IoRead8 (Address);
}
break;
case EfiCpuIoWidthUint16:
for (; Count > 0; Count--, Buffer.Buf += OutStride, Address += InStride) {
*Buffer.Ui16 = IoRead16 (Address);
}
break;
case EfiCpuIoWidthUint32:
for (; Count > 0; Count--, Buffer.Buf += OutStride, Address += InStride) {
*Buffer.Ui32 = IoRead32 (Address);
}
break;
default:
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
/**
Enables a driver to write registers in the PI CPU I/O space.
@param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
@param[in] Width Signifies the width of the I/O operation.
@param[in] UserAddress The base address of the I/O operation. The caller is responsible
for aligning the Address if required.
@param[in] Count The number of I/O operations to perform. The number of bytes moved
is Width size * Count, starting at Address.
@param[in] UserBuffer The source buffer from which to write data.
@retval EFI_SUCCESS The data was read from or written to the EFI system.
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system. Or Buffer is NULL.
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
**/
EFI_STATUS
EFIAPI
CpuIoServiceWrite (
IN EFI_CPU_IO2_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 UserAddress,
IN UINTN Count,
IN VOID *UserBuffer
)
{
UINTN InStride;
UINTN OutStride;
UINTN Address;
PTR Buffer;
EFI_STATUS Status;
EFI_CPU_IO_PROTOCOL_WIDTH BufferWidth;
Buffer.Buf = (UINT8 *) UserBuffer;
if (Width >= EfiCpuIoWidthMaximum) {
return EFI_INVALID_PARAMETER;
}
Status = CpuIoCheckParameter (Width, UserAddress, Count, UserBuffer, IA32_MAX_IO_ADDRESS);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Support access to unaligned IO address.
// Break up the request into byte by byte
//
BufferWidth = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);
CpuIoUpdateWidthCount (UserAddress, &BufferWidth, &Count);
Address = (UINTN) UserAddress;
InStride = (UINT32)(1 << (BufferWidth & 0x03));
OutStride = InStride;
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
InStride = 0;
}
if (Width >= EfiCpuIoWidthFillUint8 && Width <= EfiCpuIoWidthFillUint64) {
OutStride = 0;
}
//
// Loop for each iteration and move the data
//
switch (BufferWidth) {
case EfiCpuIoWidthUint8:
for (; Count > 0; Count--, Buffer.Buf += OutStride, Address += InStride) {
IoWrite8 (Address, *Buffer.Ui8);
}
break;
case EfiCpuIoWidthUint16:
for (; Count > 0; Count--, Buffer.Buf += OutStride, Address += InStride) {
IoWrite16 (Address, *Buffer.Ui16);
}
break;
case EfiCpuIoWidthUint32:
for (; Count > 0; Count--, Buffer.Buf += OutStride, Address += InStride) {
IoWrite32 (Address, *Buffer.Ui32);
}
break;
default:
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
/**
Entrypoint of CPU I/O 2 DXE module.
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
**/
EFI_STATUS
EFIAPI
CpuIo2Initialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
Status = gBS->InstallProtocolInterface (
&mHandle,
&gEfiCpuIo2ProtocolGuid,
EFI_NATIVE_INTERFACE,
&mCpuIo
);
ASSERT_EFI_ERROR (Status);
return Status;
}

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UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.h Normal file
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/** @file
Internal include file for the CPU I/O 2 Protocol implementation.
Copyright (c) 2009, 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.
**/
#ifndef _CPU_IO2_H_
#define _CPU_IO2_H_
#include <Protocol/CpuIo2.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#define IA32_MAX_IO_ADDRESS 0xFFFF
typedef union {
UINT8 volatile *Buf;
UINT8 volatile *Ui8;
UINT16 volatile *Ui16;
UINT32 volatile *Ui32;
UINT64 volatile *Ui64;
UINTN volatile Ui;
} PTR;
/**
Enables a driver to read memory-mapped registers in the PI System memory space.
@param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
@param[in] Width Signifies the width of the memory operation.
@param[in] Address The base address of the memory operation.
@param[in] Count The number of memory operations to perform. The number of bytes moved
is Width size * Count, starting at Address.
@param[out] Buffer The destination buffer to store the results.
@retval EFI_SUCCESS The data was read from or written to the EFI system.
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system. Or Buffer is NULL.
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
**/
EFI_STATUS
EFIAPI
CpuMemoryServiceRead (
IN EFI_CPU_IO2_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
OUT VOID *Buffer
);
/**
Enables a driver to write memory-mapped registers in the PI System memory space.
@param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
@param[in] Width Signifies the width of the memory operation.
@param[in] Address The base address of the memory operation.
@param[in] Count The number of memory operations to perform. The number of bytes moved
is Width size * Count, starting at Address.
@param[in] Buffer The source buffer from which to write data.
@retval EFI_SUCCESS The data was read from or written to the EFI system.
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system. Or Buffer is NULL.
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
**/
EFI_STATUS
EFIAPI
CpuMemoryServiceWrite (
IN EFI_CPU_IO2_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer
);
/**
Enables a driver to read registers in the PI CPU I/O space.
@param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
@param[in] Width Signifies the width of the I/O operation.
@param[in] UserAddress The base address of the I/O operation. The caller is responsible
for aligning the Address if required.
@param[in] Count The number of I/O operations to perform. The number of bytes moved
is Width size * Count, starting at Address.
@param[out] UserBuffer The destination buffer to store the results.
@retval EFI_SUCCESS The data was read from or written to the EFI system.
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system. Or Buffer is NULL.
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
**/
EFI_STATUS
EFIAPI
CpuIoServiceRead (
IN EFI_CPU_IO2_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 UserAddress,
IN UINTN Count,
OUT VOID *UserBuffer
);
/**
Enables a driver to write registers in the PI CPU I/O space.
@param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance.
@param[in] Width Signifies the width of the I/O operation.
@param[in] UserAddress The base address of the I/O operation. The caller is responsible
for aligning the Address if required.
@param[in] Count The number of I/O operations to perform. The number of bytes moved
is Width size * Count, starting at Address.
@param[in] UserBuffer The source buffer from which to write data.
@retval EFI_SUCCESS The data was read from or written to the EFI system.
@retval EFI_INVALID_PARAMETER Width is invalid for this EFI system. Or Buffer is NULL.
@retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
Or,The address range specified by Address, Width, and Count is not valid for this EFI system.
**/
EFI_STATUS
EFIAPI
CpuIoServiceWrite (
IN EFI_CPU_IO2_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 UserAddress,
IN UINTN Count,
IN VOID *UserBuffer
);
#endif

50
UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf Normal file
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#/** @file
# Produces the CPU I/O 2 Protocol.
#
# This DXE driver produces of the CPU I/O 2 Protocol, as introduced by PI 1.2.
#
# Copyright (c) 2009, 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.
#
#**/
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = CpuIo2Dxe
FILE_GUID = A19B1FE7-C1BC-49F8-875F-54A5D542443F
MODULE_TYPE = DXE_DRIVER
ENTRY_POINT = CpuIo2Initialize
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64 EBC
#
[Sources.common]
CpuIo2Dxe.h
CpuIo2Dxe.c
[Packages]
MdePkg/MdePkg.dec
[LibraryClasses]
UefiBootServicesTableLib
UefiDriverEntryPoint
IoLib
DebugLib
[Protocols]
gEfiCpuIo2ProtocolGuid ## PRODUCES
[Depex]
TRUE

531
UefiCpuPkg/CpuIoDxe/CpuIo.c
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@ -1,531 +0,0 @@
/*++
Copyright (c) 2004 - 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:
CpuIo.c
Abstract:
This is the code that publishes the CPU I/O Protocol.
The intent herein is to have a single I/O service that can load
as early as possible, extend into runtime, and be layered upon by
the implementations of architectural protocols and the PCI Root
Bridge I/O Protocol.
--*/
#include "CpuIo.h"
#define IA32_MAX_IO_ADDRESS 0xFFFF
EFI_CPU_IO_PROTOCOL mCpuIo = {
{
CpuMemoryServiceRead,
CpuMemoryServiceWrite
},
{
CpuIoServiceRead,
CpuIoServiceWrite
}
};
EFI_STATUS
CpuIoMemRW (
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINTN Count,
IN BOOLEAN DestinationStrideFlag,
OUT PTR Destination,
IN BOOLEAN SourceStrideFlag,
IN PTR Source
)
/*++
Routine Description:
Private service to perform memory mapped I/O read/write
Arguments:
Width - Width of the memory mapped I/O operation
Count - Count of the number of accesses to perform
DestinationStrideFlag - Boolean flag indicates if the destination is to be incremented
Destination - Destination of the memory mapped I/O operation
SourceStrideFlag - Boolean flag indicates if the source is to be incremented
Source - Source of the memory mapped I/O operation
Returns:
EFI_SUCCESS - Successful operation
EFI_INVALID_PARAMETER - Width is invalid
--*/
{
UINTN Stride;
UINTN DestinationStride;
UINTN SourceStride;
Width = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);
Stride = (UINTN)1 << Width;
DestinationStride = DestinationStrideFlag ? Stride : 0;
SourceStride = SourceStrideFlag ? Stride : 0;
//
// Loop for each iteration and move the data
//
switch (Width) {
case EfiCpuIoWidthUint8:
for (; Count > 0; Count--, Destination.buf += DestinationStride, Source.buf += SourceStride) {
MemoryFence();
*Destination.ui8 = *Source.ui8;
MemoryFence();
}
break;
case EfiCpuIoWidthUint16:
for (; Count > 0; Count--, Destination.buf += DestinationStride, Source.buf += SourceStride) {
MemoryFence ();
*Destination.ui16 = *Source.ui16;
MemoryFence ();
}
break;
case EfiCpuIoWidthUint32:
for (; Count > 0; Count--, Destination.buf += DestinationStride, Source.buf += SourceStride) {
MemoryFence ();
*Destination.ui32 = *Source.ui32;
MemoryFence ();
}
break;
case EfiCpuIoWidthUint64:
for (; Count > 0; Count--, Destination.buf += DestinationStride, Source.buf += SourceStride) {
MemoryFence ();
*Destination.ui64 = *Source.ui64;
MemoryFence ();
}
break;
default:
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
CpuMemoryServiceRead (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
OUT VOID *Buffer
)
/*++
Routine Description:
Perform the memory mapped I/O read service
Arguments:
This - Pointer to an instance of the CPU I/O Protocol
Width - Width of the memory mapped I/O operation
Address - Base address of the memory mapped I/O operation
Count - Count of the number of accesses to perform
Buffer - Pointer to the destination buffer to store the results
Returns:
EFI_SUCCESS - The data was read.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_INVALID_PARAMETER - Buffer is NULL.
EFI_UNSUPPORTED - The Buffer is not aligned for the given Width.
EFI_UNSUPPORTED - The address range specified by Address, Width,
and Count is not valid.
--*/
{
PTR Source;
PTR Destination;
EFI_STATUS Status;
Status = CpuIoCheckParameter (Width, Address, Count, Buffer, MAX_ADDRESS);
if (EFI_ERROR (Status)) {
return Status;
}
Destination.buf = Buffer;
Source.buf = (VOID *) (UINTN) Address;
if (Width >= EfiCpuIoWidthUint8 && Width <= EfiCpuIoWidthUint64) {
return CpuIoMemRW (Width, Count, TRUE, Destination, TRUE, Source);
}
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
return CpuIoMemRW (Width, Count, TRUE, Destination, FALSE, Source);
}
if (Width >= EfiCpuIoWidthFillUint8 && Width <= EfiCpuIoWidthFillUint64) {
return CpuIoMemRW (Width, Count, FALSE, Destination, TRUE, Source);
}
return EFI_INVALID_PARAMETER;
}
EFI_STATUS
EFIAPI
CpuMemoryServiceWrite (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer
)
/*++
Routine Description:
Perform the memory mapped I/O write service
Arguments:
This - Pointer to an instance of the CPU I/O Protocol
Width - Width of the memory mapped I/O operation
Address - Base address of the memory mapped I/O operation
Count - Count of the number of accesses to perform
Buffer - Pointer to the source buffer from which to write data
Returns:
EFI_SUCCESS - The data was written.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_INVALID_PARAMETER - Buffer is NULL.
EFI_UNSUPPORTED - The Buffer is not aligned for the given Width.
EFI_UNSUPPORTED - The address range specified by Address, Width,
and Count is not valid.
--*/
{
PTR Source;
PTR Destination;
EFI_STATUS Status;
Status = CpuIoCheckParameter (Width, Address, Count, Buffer, MAX_ADDRESS);
if (EFI_ERROR (Status)) {
return Status;
}
Destination.buf = (VOID *) (UINTN) Address;
Source.buf = Buffer;
if (Width >= EfiCpuIoWidthUint8 && Width <= EfiCpuIoWidthUint64) {
return CpuIoMemRW (Width, Count, TRUE, Destination, TRUE, Source);
}
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
return CpuIoMemRW (Width, Count, FALSE, Destination, TRUE, Source);
}
if (Width >= EfiCpuIoWidthFillUint8 && Width <= EfiCpuIoWidthFillUint64) {
return CpuIoMemRW (Width, Count, TRUE, Destination, FALSE, Source);
}
return EFI_INVALID_PARAMETER;
}
EFI_STATUS
EFIAPI
CpuIoServiceRead (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 UserAddress,
IN UINTN Count,
OUT VOID *UserBuffer
)
/*++
Routine Description:
Perform the port I/O read service
Arguments:
This - Pointer to an instance of the CPU I/O Protocol
Width - Width of the port I/O operation
Address - Base address of the port I/O operation
Count - Count of the number of accesses to perform
Buffer - Pointer to the destination buffer to store the results
Returns:
EFI_SUCCESS - The data was read.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_INVALID_PARAMETER - Buffer is NULL.
EFI_UNSUPPORTED - The Buffer is not aligned for the given Width.
EFI_UNSUPPORTED - The address range specified by Address, Width,
and Count is not valid.
--*/
{
UINTN InStride;
UINTN OutStride;
UINTN Address;
PTR Buffer;
EFI_STATUS Status;
Buffer.buf = (UINT8 *) UserBuffer;
if (Width >= EfiCpuIoWidthMaximum) {
return EFI_INVALID_PARAMETER;
}
Status = CpuIoCheckParameter (Width, UserAddress, Count, UserBuffer, IA32_MAX_IO_ADDRESS);
if (EFI_ERROR (Status)) {
return Status;
}
Address = (UINTN) UserAddress;
InStride = (UINTN)1 << (Width & 0x03);
OutStride = InStride;
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
InStride = 0;
}
if (Width >= EfiCpuIoWidthFillUint8 && Width <= EfiCpuIoWidthFillUint64) {
OutStride = 0;
}
Width = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);
//
// Loop for each iteration and move the data
//
switch (Width) {
case EfiCpuIoWidthUint8:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
*Buffer.ui8 = IoRead8 ((UINTN) Address);
}
break;
case EfiCpuIoWidthUint16:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
*Buffer.ui16 = IoRead16 ((UINTN) Address);
}
break;
case EfiCpuIoWidthUint32:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
*Buffer.ui32 = IoRead32 ((UINTN) Address);
}
break;
default:
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
CpuIoServiceWrite (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 UserAddress,
IN UINTN Count,
IN VOID *UserBuffer
)
/*++
Routine Description:
Perform the port I/O write service
Arguments:
This - Pointer to an instance of the CPU I/O Protocol
Width - Width of the port I/O operation
Address - Base address of the port I/O operation
Count - Count of the number of accesses to perform
Buffer - Pointer to the source buffer from which to write data
Returns:
EFI_SUCCESS - The data was written.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_INVALID_PARAMETER - Buffer is NULL.
EFI_UNSUPPORTED - The Buffer is not aligned for the given Width.
EFI_UNSUPPORTED - The address range specified by Address, Width,
and Count is not valid.
--*/
{
UINTN InStride;
UINTN OutStride;
UINTN Address;
PTR Buffer;
EFI_STATUS Status;
Buffer.buf = (UINT8 *) UserBuffer;
if (Width >= EfiCpuIoWidthMaximum) {
return EFI_INVALID_PARAMETER;
}
Status = CpuIoCheckParameter (Width, UserAddress, Count, UserBuffer, IA32_MAX_IO_ADDRESS);
if (EFI_ERROR (Status)) {
return Status;
}
Address = (UINTN) UserAddress;
InStride = (UINTN)1 << (Width & 0x03);
OutStride = InStride;
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
InStride = 0;
}
if (Width >= EfiCpuIoWidthFillUint8 && Width <= EfiCpuIoWidthFillUint64) {
OutStride = 0;
}
Width = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);
//
// Loop for each iteration and move the data
//
switch (Width) {
case EfiCpuIoWidthUint8:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
IoWrite8 ((UINTN) Address, *Buffer.ui8);
}
break;
case EfiCpuIoWidthUint16:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
IoWrite16 ((UINTN) Address, *Buffer.ui16);
}
break;
case EfiCpuIoWidthUint32:
for (; Count > 0; Count--, Buffer.buf += OutStride, Address += InStride) {
IoWrite32 ((UINTN) Address, *Buffer.ui32);
}
break;
default:
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
CpuIoInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
CpuIo driver entry point.
Arguments:
ImageHandle - The firmware allocated handle for the EFI image.
SystemTable - A pointer to the EFI System Table.
Returns:
EFI_SUCCESS - The driver was initialized.
EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of resources.
--*/
{
EFI_STATUS Status;
EFI_HANDLE Handle;
Handle = NULL;
Status = SystemTable->BootServices->InstallProtocolInterface (
&Handle,
&gEfiCpuIoProtocolGuid,
EFI_NATIVE_INTERFACE,
&mCpuIo
);
ASSERT_EFI_ERROR (Status);
return Status;
}
EFI_STATUS
CpuIoCheckParameter (
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer,
IN UINT64 Limit
)
/*++
Routine Description:
Check the validation of parameters for CPU I/O interface functions.
Arguments:
Width - Width of the Memory Access
Address - Address of the Memory access
Count - Count of the number of accesses to perform
Buffer - Pointer to the buffer to read from memory
Buffer - Memory buffer for the I/O operation
Limit - Maximum address supported
Returns:
EFI_INVALID_PARAMETER - Buffer is NULL
EFI_UNSUPPORTED - The address range specified by Width, Address and Count is invalid
EFI_UNSUPPORTED - The memory buffer is not aligned
EFI_SUCCESS - Parameters are OK
--*/
{
UINTN AlignMask;
if (Buffer == NULL) {
return EFI_INVALID_PARAMETER;
}
if (Address > Limit) {
return EFI_UNSUPPORTED;
}
//
// For FiFo type, the target address won't increase during the access,
// so treat count as 1
//
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
Count = 1;
}
Width = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);
if (Address - 1 + ((UINTN)1 << Width) * Count > Limit) {
return EFI_UNSUPPORTED;
}
AlignMask = ((UINTN)1 << Width) - 1;
if ((UINTN) Buffer & AlignMask) {
return EFI_UNSUPPORTED;
}
return EFI_SUCCESS;
}

244
UefiCpuPkg/CpuIoDxe/CpuIo.h
View File

@ -1,244 +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:
CpuIo.h
Abstract:
*.h file for the driver
Note: the EFIAPI on the CpuIo functions is used to glue MASM (assembler) code
into C code. By making the MASM functions EFIAPI it ensures that a standard
C calling convention is assumed by the compiler, reguardless of the compiler
flags.
--*/
#ifndef _CPU_IO_H
#define _CPU_IO_H
#include <PiDxe.h>
#include <Protocol/CpuIo.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
typedef union {
UINT8 volatile *buf;
UINT8 volatile *ui8;
UINT16 volatile *ui16;
UINT32 volatile *ui32;
UINT64 volatile *ui64;
UINTN volatile ui;
} PTR;
EFI_STATUS
EFIAPI
CpuIoInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
CpuIo driver entry point.
Arguments:
ImageHandle - The firmware allocated handle for the EFI image.
SystemTable - A pointer to the EFI System Table.
Returns:
EFI_SUCCESS - The driver was initialized.
EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of resources.
--*/
;
EFI_STATUS
EFIAPI
CpuMemoryServiceRead (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
OUT VOID *Buffer
)
/*++
Routine Description:
Perform the memory mapped I/O read service
Arguments:
This - Pointer to an instance of the CPU I/O Protocol
Width - Width of the memory mapped I/O operation
Address - Base address of the memory mapped I/O operation
Count - Count of the number of accesses to perform
Buffer - Pointer to the destination buffer to store the results
Returns:
EFI_SUCCESS - The data was read.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_INVALID_PARAMETER - Buffer is NULL.
EFI_UNSUPPORTED - The Buffer is not aligned for the given Width.
EFI_UNSUPPORTED - The address range specified by Address, Width,
and Count is not valid.
--*/
;
EFI_STATUS
EFIAPI
CpuMemoryServiceWrite (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer
)
/*++
Routine Description:
Perform the memory mapped I/O write service
Arguments:
This - Pointer to an instance of the CPU I/O Protocol
Width - Width of the memory mapped I/O operation
Address - Base address of the memory mapped I/O operation
Count - Count of the number of accesses to perform
Buffer - Pointer to the source buffer from which to write data
Returns:
EFI_SUCCESS - The data was written.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_INVALID_PARAMETER - Buffer is NULL.
EFI_UNSUPPORTED - The Buffer is not aligned for the given Width.
EFI_UNSUPPORTED - The address range specified by Address, Width,
and Count is not valid.
--*/
;
EFI_STATUS
EFIAPI
CpuIoServiceRead (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 UserAddress,
IN UINTN Count,
OUT VOID *UserBuffer
)
/*++
Routine Description:
Perform the port I/O read service
Arguments:
This - Pointer to an instance of the CPU I/O Protocol
Width - Width of the port I/O operation
Address - Base address of the port I/O operation
Count - Count of the number of accesses to perform
Buffer - Pointer to the destination buffer to store the results
Returns:
EFI_SUCCESS - The data was read.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_INVALID_PARAMETER - Buffer is NULL.
EFI_UNSUPPORTED - The Buffer is not aligned for the given Width.
EFI_UNSUPPORTED - The address range specified by Address, Width,
and Count is not valid.
--*/
;
EFI_STATUS
EFIAPI
CpuIoServiceWrite (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 UserAddress,
IN UINTN Count,
IN VOID *UserBuffer
)
/*++
Routine Description:
Perform the port I/O write service
Arguments:
This - Pointer to an instance of the CPU I/O Protocol
Width - Width of the port I/O operation
Address - Base address of the port I/O operation
Count - Count of the number of accesses to perform
Buffer - Pointer to the source buffer from which to write data
Returns:
EFI_SUCCESS - The data was written.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_INVALID_PARAMETER - Buffer is NULL.
EFI_UNSUPPORTED - The Buffer is not aligned for the given Width.
EFI_UNSUPPORTED - The address range specified by Address, Width,
and Count is not valid.
--*/
;
EFI_STATUS
CpuIoCheckParameter (
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer,
IN UINT64 Limit
)
/*++
Routine Description:
Check the validation of parameters for CPU I/O interface functions.
Arguments:
Width - Width of the Memory Access
Address - Address of the Memory access
Count - Count of the number of accesses to perform
Buffer - Pointer to the buffer to read from memory
Buffer - Memory buffer for the I/O operation
Limit - Maximum address supported
Returns:
EFI_INVALID_PARAMETER - Buffer is NULL
EFI_UNSUPPORTED - The address range specified by Width, Address and Count is invalid
EFI_UNSUPPORTED - The memory buffer is not aligned
EFI_SUCCESS - Parameters are OK
--*/
;
#endif

51
UefiCpuPkg/CpuIoDxe/CpuIo.inf
View File

@ -1,51 +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:
#
# CpuIo.inf
#
# Abstract:
#
# Component description file for CpuIo module
#
#--*/
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = CpuIo
FILE_GUID = BAE7599F-3C6B-43b7-BDF0-9CE07AA91AA6
MODULE_TYPE = DXE_DRIVER
VERSION_STRING = 1.0
EDK_RELEASE_VERSION = 0x00020000
EFI_SPECIFICATION_VERSION = 0x00020000
ENTRY_POINT = CpuIoInitialize
[Packages]
MdePkg/MdePkg.dec
IntelFrameworkPkg/IntelFrameworkPkg.dec
[LibraryClasses]
BaseLib
DebugLib
UefiDriverEntryPoint
IoLib
[Sources.common]
CpuIo.c
CpuIo.h
[Protocols]
gEfiCpuIoProtocolGuid
[Depex]
TRUE

2
UefiCpuPkg/UefiCpuPkg.dsc
View File

@ -49,5 +49,5 @@
#
[Components.common]
UefiCpuPkg/CpuIoDxe/CpuIo.inf
UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf
UefiCpuPkg/Library/BaseUefiCpuLib/BaseUefiCpuLib.inf