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Add generic module that produces the Framework CPU I/O Protocol using the services from the MdePkg IoLib 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9755 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney 2010-01-14 18:57:44 +00:00
parent dbc225ca51
commit 806bf4f2f1
3 changed files with 544 additions and 0 deletions
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14
IntelFrameworkModulePkg/IntelFrameworkModulePkg.dsc
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@ -204,6 +204,20 @@
[Components.IA32]
IntelFrameworkModulePkg/Universal/StatusCode/RuntimeDxe/StatusCodeRuntimeDxe.inf
IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIoDxe.inf {
<LibraryClasses>
IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
}
[Components.X64]
IntelFrameworkModulePkg/Universal/StatusCode/RuntimeDxe/StatusCodeRuntimeDxe.inf
IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIoDxe.inf {
<LibraryClasses>
IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
}
[Components.IPF]
IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIoDxe.inf {
<LibraryClasses>
IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
}

484
IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIo.c Normal file
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/** @file
Uses the services of the I/O Library to produce the CPU I/O Protocol
Copyright (c) 2004 - 2010, 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 <PiDxe.h>
#include <Protocol/CpuIo.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
#include <Library/UefiBootServicesTableLib.h>
#define MAX_IO_PORT_ADDRESS 0xFFFF
//
// Function Prototypes
//
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
);
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
);
EFI_STATUS
EFIAPI
CpuIoServiceRead (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
OUT VOID *Buffer
);
EFI_STATUS
EFIAPI
CpuIoServiceWrite (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer
);
//
// Handle for the CPU I/O Protocol
//
EFI_HANDLE mHandle = NULL;
//
// CPU I/O Protocol inatance
//
EFI_CPU_IO_PROTOCOL mCpuIo = {
{
CpuMemoryServiceRead,
CpuMemoryServiceWrite
},
{
CpuIoServiceRead,
CpuIoServiceWrite
}
};
//
// Lookup table for increment values based on transfer widths
//
UINT8 mInStride[] = {
1, // EfiCpuIoWidthUint8
2, // EfiCpuIoWidthUint16
4, // EfiCpuIoWidthUint32
8, // EfiCpuIoWidthUint64
0, // EfiCpuIoWidthFifoUint8
0, // EfiCpuIoWidthFifoUint16
0, // EfiCpuIoWidthFifoUint32
0, // EfiCpuIoWidthFifoUint64
1, // EfiCpuIoWidthFillUint8
2, // EfiCpuIoWidthFillUint16
4, // EfiCpuIoWidthFillUint32
8 // EfiCpuIoWidthFillUint64
};
//
// Lookup table for increment values based on transfer widths
//
UINT8 mOutStride[] = {
1, // EfiCpuIoWidthUint8
2, // EfiCpuIoWidthUint16
4, // EfiCpuIoWidthUint32
8, // EfiCpuIoWidthUint64
1, // EfiCpuIoWidthFifoUint8
2, // EfiCpuIoWidthFifoUint16
4, // EfiCpuIoWidthFifoUint32
8, // EfiCpuIoWidthFifoUint64
0, // EfiCpuIoWidthFillUint8
0, // EfiCpuIoWidthFillUint16
0, // EfiCpuIoWidthFillUint32
0 // EfiCpuIoWidthFillUint64
};
/**
Check parameters to a CPU I/O Protocol service request.
@param Width Signifies the width of the I/O or Memory operation.
@param Address The base address of the I/O or Memory operation.
@param Count The number of I/O or Memory operations to perform.
The number of bytes moved is Width size * Count, starting at Address.
@param Buffer For read operations, the destination buffer to store the results.
For write operations, the source buffer from which to write data.
@param MmioOperation TRUE for an MMIO operation, FALSE for I/O Port operation.
@retval EFI_SUCCESS The parameters for this request pass the checks.
@retval EFI_INVALID_PARAMETER Buffer is NULL or Width is not valid.
@retval EFI_UNSUPPORTED The address range specified by Address, Width, and Count exceeds Limit.
The Buffer is not aligned for the given Width.
**/
EFI_STATUS
CpuIoCheckParameter (
IN BOOLEAN MmioOperation,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer
)
{
UINT64 MaxCount;
UINT64 Limit;
//
// Check to see if Buffer is NULL
//
if (Buffer == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Check to see if Width is in the valid range
//
if (Width < 0 || Width >= EfiCpuIoWidthMaximum) {
return EFI_INVALID_PARAMETER;
}
//
// For FIFO type, the target address won't increase during the access,
// so treat Count as 1
//
if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
Count = 1;
}
//
// Check to see if Width is in the valid range for I/O Port operations
//
Width = Width & 0x03;
if (!MmioOperation && (Width == EfiCpuIoWidthUint64)) {
return EFI_INVALID_PARAMETER;
}
//
// Check to see if any address associated with this transfer exceeds the maximum
// allowed address. The maximum address implied by the parameters passed in is
// Address + Size * Count. If the following condition is met, then the transfer
// is not supported.
//
// Address + Size * Count > (MmioOperation ? MAX_ADDRESS : MAX_IO_PORT_ADDRESS) + 1
//
// Since MAX_ADDRESS can be the maximum integer value supported by the CPU and Count
// can also be the maximum integer value supported by the CPU, this range
// check must be adjusted to avoid all oveflow conditions.
//
// The follwing form of the range check is equivalent but assumes that
// MAX_ADDRESS and MAX_IO_PORT_ADDRESS are of the form (2^n - 1).
//
Limit = (MmioOperation ? MAX_ADDRESS : MAX_IO_PORT_ADDRESS);
if (Count == 0) {
if (Address > Limit) {
return EFI_UNSUPPORTED;
}
} else {
MaxCount = RShiftU64 (Limit, Width);
if (MaxCount < (Count - 1)) {
return EFI_UNSUPPORTED;
}
if (Address > LShiftU64 (MaxCount - Count + 1, Width)) {
return EFI_UNSUPPORTED;
}
}
//
// Check to see if Buffer is alligned
//
if (((UINTN)Buffer & (mInStride[Width] - 1)) != 0) {
return EFI_UNSUPPORTED;
}
return EFI_SUCCESS;
}
/**
Reads memory-mapped registers.
@param This A pointer to the EFI_CPU_IO_PROTOCOL instance.
@param Width Signifies the width of the I/O or Memory operation.
@param Address The base address of the I/O or Memoryoperation.
@param Count The number of I/O or Memory operations to perform.
The number of bytes moved is Width size * Count, starting at Address.
@param Buffer For read operations, the destination buffer to store the results.
For write operations, 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
CpuMemoryServiceRead (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
OUT VOID *Buffer
)
{
EFI_STATUS Status;
UINT8 InStride;
UINT8 OutStride;
EFI_CPU_IO_PROTOCOL_WIDTH OperationWidth;
UINT8 *Uint8Buffer;
Status = CpuIoCheckParameter (TRUE, Width, Address, Count, Buffer);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Select loop based on the width of the transfer
//
InStride = mInStride[Width];
OutStride = mOutStride[Width];
OperationWidth = Width & 0x03;
for (Uint8Buffer = Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {
if (OperationWidth == EfiCpuIoWidthUint8) {
*Uint8Buffer = MmioRead8 ((UINTN)Address);
} else if (OperationWidth == EfiCpuIoWidthUint16) {
*((UINT16 *)Uint8Buffer) = MmioRead16 ((UINTN)Address);
} else if (OperationWidth == EfiCpuIoWidthUint32) {
*((UINT32 *)Uint8Buffer) = MmioRead32 ((UINTN)Address);
} else if (OperationWidth == EfiCpuIoWidthUint64) {
*((UINT64 *)Uint8Buffer) = MmioRead64 ((UINTN)Address);
}
}
return EFI_SUCCESS;
}
/**
Writes memory-mapped registers.
@param This A pointer to the EFI_CPU_IO_PROTOCOL instance.
@param Width Signifies the width of the I/O or Memory operation.
@param Address The base address of the I/O or Memoryoperation.
@param Count The number of I/O or Memory operations to perform.
The number of bytes moved is Width size * Count, starting at Address.
@param Buffer For read operations, the destination buffer to store the results.
For write operations, 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_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer
)
{
EFI_STATUS Status;
UINT8 InStride;
UINT8 OutStride;
EFI_CPU_IO_PROTOCOL_WIDTH OperationWidth;
UINT8 *Uint8Buffer;
Status = CpuIoCheckParameter (TRUE, Width, Address, Count, Buffer);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Select loop based on the width of the transfer
//
InStride = mInStride[Width];
OutStride = mOutStride[Width];
OperationWidth = Width & 0x03;
for (Uint8Buffer = Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {
if (OperationWidth == EfiCpuIoWidthUint8) {
MmioWrite8 ((UINTN)Address, *Uint8Buffer);
} else if (OperationWidth == EfiCpuIoWidthUint16) {
MmioWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));
} else if (OperationWidth == EfiCpuIoWidthUint32) {
MmioWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));
} else if (OperationWidth == EfiCpuIoWidthUint64) {
MmioWrite64 ((UINTN)Address, *((UINT64 *)Uint8Buffer));
}
}
return EFI_SUCCESS;
}
/**
Reads I/O registers.
@param This A pointer to the EFI_CPU_IO_PROTOCOL instance.
@param Width Signifies the width of the I/O or Memory operation.
@param Address The base address of the I/O or Memoryoperation.
@param Count The number of I/O or Memory operations to perform.
The number of bytes moved is Width size * Count, starting at Address.
@param Buffer For read operations, the destination buffer to store the results.
For write operations, 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
CpuIoServiceRead (
IN EFI_CPU_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
OUT VOID *Buffer
)
{
EFI_STATUS Status;
UINT8 InStride;
UINT8 OutStride;
EFI_CPU_IO_PROTOCOL_WIDTH OperationWidth;
UINT8 *Uint8Buffer;
Status = CpuIoCheckParameter (FALSE, Width, Address, Count, Buffer);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Select loop based on the width of the transfer
//
InStride = mInStride[Width];
OutStride = mOutStride[Width];
OperationWidth = Width & 0x03;
for (Uint8Buffer = Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {
if (OperationWidth == EfiCpuIoWidthUint8) {
*Uint8Buffer = IoRead8 ((UINTN)Address);
} else if (OperationWidth == EfiCpuIoWidthUint16) {
*((UINT16 *)Uint8Buffer) = IoRead16 ((UINTN)Address);
} else if (OperationWidth == EfiCpuIoWidthUint32) {
*((UINT32 *)Uint8Buffer) = IoRead32 ((UINTN)Address);
}
}
return EFI_SUCCESS;
}
/**
Write I/O registers.
@param This A pointer to the EFI_CPU_IO_PROTOCOL instance.
@param Width Signifies the width of the I/O or Memory operation.
@param Address The base address of the I/O or Memoryoperation.
@param Count The number of I/O or Memory operations to perform.
The number of bytes moved is Width size * Count, starting at Address.
@param Buffer For read operations, the destination buffer to store the results.
For write operations, 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_IO_PROTOCOL *This,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN VOID *Buffer
)
{
EFI_STATUS Status;
UINT8 InStride;
UINT8 OutStride;
EFI_CPU_IO_PROTOCOL_WIDTH OperationWidth;
UINT8 *Uint8Buffer;
//
// Make sure the parameters are valid
//
Status = CpuIoCheckParameter (FALSE, Width, Address, Count, Buffer);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Select loop based on the width of the transfer
//
InStride = mInStride[Width];
OutStride = mOutStride[Width];
OperationWidth = Width & 0x03;
for (Uint8Buffer = (UINT8 *)Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {
if (OperationWidth == EfiCpuIoWidthUint8) {
IoWrite8 ((UINTN)Address, *Uint8Buffer);
} else if (OperationWidth == EfiCpuIoWidthUint16) {
IoWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));
} else if (OperationWidth == EfiCpuIoWidthUint32) {
IoWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));
}
}
return EFI_SUCCESS;
}
/**
The user Entry Point for module CpuIo. The user code starts with this function.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval other Some error occurs when executing this entry point.
**/
EFI_STATUS
EFIAPI
CpuIoInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiCpuIoProtocolGuid);
Status = gBS->InstallMultipleProtocolInterfaces (
&mHandle,
&gEfiCpuIoProtocolGuid, &mCpuIo,
NULL
);
ASSERT_EFI_ERROR (Status);
return Status;
}

46
IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIoDxe.inf Normal file
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@ -0,0 +1,46 @@
#/** @file
# Module that produces the Framework CPU I/O Protocol using the services of the I/O Library
#
# Copyright (c) 2006 - 2010, 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.
#
#**/
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = CpuIoDxe
FILE_GUID = BAE7599F-3C6B-43b7-BDF0-9CE07AA91AA6
MODULE_TYPE = DXE_RUNTIME_DRIVER
VERSION_STRING = 1.0
ENTRY_POINT = CpuIoInitialize
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources]
CpuIo.c
[Packages]
MdePkg/MdePkg.dec
IntelFrameworkPkg/IntelFrameworkPkg.dec
[LibraryClasses]
UefiDriverEntryPoint
BaseLib
DebugLib
IoLib
UefiBootServicesTableLib
[Protocols]
gEfiCpuIoProtocolGuid # PROTOCOL SOMETIMES_PRODUCED
[Depex]
TRUE