audk/MdePkg/Include/Ppi/CpuIo.h

/** @file
  This 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.

  Copyright (c) 2006 - 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.             

  @par Revision Reference:
  This PPI is introduced in PI Version 1.0.
  
**/

#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  CONST EFI_PEI_SERVICES            **PeiServices,
  IN  CONST 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 {
  ///
  /// This service provides the various modalities of memory and I/O read.
  ///
  EFI_PEI_CPU_IO_PPI_IO_MEM Read;
  ///
  /// This service provides the various modalities of memory and I/O write.
  ///
  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 An 8-bit value returned from the I/O space.

**/
typedef
UINT8
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_READ8)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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 A 16-bit value returned from the I/O space.

**/
typedef
UINT16
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_READ16)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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 A 32-bit value returned from the I/O space.

**/
typedef
UINT32
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_READ32)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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 A 64-bit value returned from the I/O space.

**/
typedef
UINT64
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_READ64)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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.

**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_WRITE8)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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.

**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_WRITE16)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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.

**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_WRITE32)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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.

**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_IO_WRITE64)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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 An 8-bit value returned from the memory space.

**/
typedef
UINT8
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_READ8)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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 A 16-bit value returned from the memory space.

**/
typedef
UINT16
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_READ16)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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 A 32-bit value returned from the memory space.

**/
typedef
UINT32
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_READ32)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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 A 64-bit value returned from the memory space.

**/
typedef
UINT64
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_READ64)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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.

**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_WRITE8)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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.

**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_WRITE16)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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.

**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_WRITE32)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST 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.

**/
typedef
VOID
(EFIAPI *EFI_PEI_CPU_IO_PPI_MEM_WRITE64)(
  IN  CONST EFI_PEI_SERVICES        **PeiServices,
  IN  CONST EFI_PEI_CPU_IO_PPI      *This,
  IN  UINT64                        Address,
  IN  UINT64                        Data
  );

///
/// 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.
///
struct _EFI_PEI_CPU_IO_PPI {
  EFI_PEI_CPU_IO_PPI_ACCESS       Mem;      ///< Collection of memory-access services.
  EFI_PEI_CPU_IO_PPI_ACCESS       Io;       ///< Collection of I/O-access services.

  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 gEfiPeiCpuIoPpiInstalledGuid;

#endif