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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
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