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/** @file
This file declares CPU IO PPI that abstracts CPU IO access
Copyright (c) 2006, 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
@par Revision Reference:
This PPI is defined in PEI CIS.
Version 0.91.
**/
#ifndef __PEI_CPUIO_PPI_H__
#define __PEI_CPUIO_PPI_H__
#define EFI_PEI_CPU_IO_PPI_INSTALLED_GUID \
{ \
0xe6af1f7b, 0xfc3f, 0x46da, {0xa8, 0x28, 0xa3, 0xb4, 0x57, 0xa4, 0x42, 0x82 } \
}
typedef struct _EFI_PEI_CPU_IO_PPI EFI_PEI_CPU_IO_PPI;
//
// *******************************************************
// EFI_PEI_CPU_IO_PPI_WIDTH
// *******************************************************
//
typedef enum {
EfiPeiCpuIoWidthUint8,
EfiPeiCpuIoWidthUint16,
EfiPeiCpuIoWidthUint32,
EfiPeiCpuIoWidthUint64,
EfiPeiCpuIoWidthFifoUint8,
EfiPeiCpuIoWidthFifoUint16,
EfiPeiCpuIoWidthFifoUint32,
EfiPeiCpuIoWidthFifoUint64,
EfiPeiCpuIoWidthFillUint8,
EfiPeiCpuIoWidthFillUint16,
EfiPeiCpuIoWidthFillUint32,
EfiPeiCpuIoWidthFillUint64,
EfiPeiCpuIoWidthMaximum
} EFI_PEI_CPU_IO_PPI_WIDTH;
/**
Memory-based access services and I/O-based access services.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Width The width of the access. Enumerated in bytes.
@param Address The physical address of the access.
@param Count The number of accesses to perform.
@param Buffer A pointer to the buffer of data.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_NOT_YET_AVAILABLE The service has not been installed.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_MEM) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN EFI_PEI_CPU_IO_PPI_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN OUT VOID *Buffer
);
//
// *******************************************************
// EFI_PEI_CPU_IO_PPI_ACCESS
// *******************************************************
//
typedef struct {
EFI_PEI_CPU_IO_PPI_IO_MEM Read;
EFI_PEI_CPU_IO_PPI_IO_MEM Write;
} EFI_PEI_CPU_IO_PPI_ACCESS;
/**
8-bit I/O read operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@return UINT8
**/
typedef
UINT8
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_READ8) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address
);
/**
16-bit I/O read operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@return UINT16
**/
typedef
UINT16
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_READ16) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address
);
/**
32-bit I/O read operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@return UINT32
**/
typedef
UINT32
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_READ32) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address
);
/**
64-bit I/O read operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@return UINT64
**/
typedef
UINT64
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_READ64) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address
);
/**
8-bit I/O write operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@param Data The data to write.
@return None
**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_WRITE8) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address,
IN UINT8 Data
);
/**
16-bit I/O write operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@param Data The data to write.
@return None
**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_WRITE16) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address,
IN UINT16 Data
);
/**
32-bit I/O write operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@param Data The data to write.
@return None
**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_WRITE32) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address,
IN UINT32 Data
);
/**
64-bit I/O write operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@param Data The data to write.
@return None
**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_WRITE64) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address,
IN UINT64 Data
);
/**
8-bit Memory read operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@return UINT8
**/
typedef
UINT8
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_READ8) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address
);
/**
16-bit Memory read operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@return UINT16
**/
typedef
UINT16
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_READ16) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address
);
/**
32-bit Memory read operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@return UINT32
**/
typedef
UINT32
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_READ32) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address
);
/**
64-bit Memory read operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@return UINT64
**/
typedef
UINT64
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_READ64) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address
);
/**
8-bit Memory write operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@param Data The data to write.
@return None
**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_WRITE8) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address,
IN UINT8 Data
);
/**
16-bit Memory write operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@param Data The data to write.
@return None
**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_WRITE16) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address,
IN UINT16 Data
);
/**
32-bit Memory write operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@param Data The data to write.
@return None
**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_WRITE32) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address,
IN UINT32 Data
);
/**
64-bit Memory write operations.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to local data for the interface.
@param Address The physical address of the access.
@param Data The data to write.
@return None
**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_WRITE64) (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_CPU_IO_PPI *This,
IN UINT64 Address,
IN UINT64 Data
);
/**
@par Ppi Description:
EFI_PEI_CPU_IO_PPI provides a set of memory and I/O-based services.
The perspective of the services is that of the processor, not the bus or system.
@param Mem
Collection of memory-access services.
@param I/O
Collection of I/O-access services.
@param IoRead8
8-bit read service.
@param IoRead16
16-bit read service.
@param IoRead32
32-bit read service.
@param IoRead64
64-bit read service.
@param IoWrite8
8-bit write service.
@param IoWrite16
16-bit write service.
@param IoWrite32
32-bit write service.
@param IoWrite64
64-bit write service.
@param MemRead8
8-bit read service.
@param MemRead16
16-bit read service.
@param MemRead32
32-bit read service.
@param MemRead64
64-bit read service.
@param MemWrite8
8-bit write service.
@param MemWrite16
16-bit write service.
@param MemWrite32
32-bit write service.
@param MemWrite64
64-bit write service.
**/
struct _EFI_PEI_CPU_IO_PPI {
EFI_PEI_CPU_IO_PPI_ACCESS Mem;
EFI_PEI_CPU_IO_PPI_ACCESS Io;
EFI_PEI_CPU_IO_PPI_IO_READ8 IoRead8;
EFI_PEI_CPU_IO_PPI_IO_READ16 IoRead16;
EFI_PEI_CPU_IO_PPI_IO_READ32 IoRead32;
EFI_PEI_CPU_IO_PPI_IO_READ64 IoRead64;
EFI_PEI_CPU_IO_PPI_IO_WRITE8 IoWrite8;
EFI_PEI_CPU_IO_PPI_IO_WRITE16 IoWrite16;
EFI_PEI_CPU_IO_PPI_IO_WRITE32 IoWrite32;
EFI_PEI_CPU_IO_PPI_IO_WRITE64 IoWrite64;
EFI_PEI_CPU_IO_PPI_MEM_READ8 MemRead8;
EFI_PEI_CPU_IO_PPI_MEM_READ16 MemRead16;
EFI_PEI_CPU_IO_PPI_MEM_READ32 MemRead32;
EFI_PEI_CPU_IO_PPI_MEM_READ64 MemRead64;
EFI_PEI_CPU_IO_PPI_MEM_WRITE8 MemWrite8;
EFI_PEI_CPU_IO_PPI_MEM_WRITE16 MemWrite16;
EFI_PEI_CPU_IO_PPI_MEM_WRITE32 MemWrite32;
EFI_PEI_CPU_IO_PPI_MEM_WRITE64 MemWrite64;
};
extern EFI_GUID gEfiPeiCpuIoPpiInServiceTableGuid;
#endif
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