/**

  Copyright (c) 2006 - 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.

**/

#ifndef __PCICFGPPI_INTERLNAL_H_
#define __PCICFGPPI_INTERLNAL_H_

#include <PiPei.h>
#include <FrameworkPei.h>

#include <Ppi/PciCfg2.h>
#include <Ppi/PciCfg.h>

#include <Library/BaseLib.h>
#include <Library/PcdLib.h>
#include <Library/DebugLib.h>
#include <Library/PciLib.h>
#include <Library/PeimEntryPoint.h>

#include <IndustryStandard/Pci.h>


/**
   Convert EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS to PCI_LIB_ADDRESS.

   @param Address   PCI address with
                    EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS format.
   
   @return The PCI address with PCI_LIB_ADDRESS format.
   
**/
UINTN
PciCfgAddressConvert (
  EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS *Address
  );


/**
  Reads from a given location in the PCI configuration space.

  @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.
                          See EFI_PEI_PCI_CFG_PPI_WIDTH above.

  @param  Address         The physical address of the access. The format of
                          the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.

  @param  Buffer          A pointer to the buffer of data..


  @retval EFI_SUCCESS           The function completed successfully.

  @retval EFI_DEVICE_ERROR      There was a problem with the transaction.

  @retval EFI_DEVICE_NOT_READY  The device is not capable of supporting the operation at this
                                time.

**/
EFI_STATUS
EFIAPI 
PciCfg2Read (
  IN CONST  EFI_PEI_SERVICES          **PeiServices,
  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
  IN        UINT64                    Address,
  IN OUT    VOID                      *Buffer
);

/**
  Write to a given location in the PCI configuration space.

  @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.
                          See EFI_PEI_PCI_CFG_PPI_WIDTH above.

  @param  Address         The physical address of the access. The format of
                          the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.

  @param  Buffer          A pointer to the buffer of data..


  @retval EFI_SUCCESS           The function completed successfully.

  @retval EFI_DEVICE_ERROR      There was a problem with the transaction.

  @retval EFI_DEVICE_NOT_READY  The device is not capable of supporting the operation at this
                                time.

**/
EFI_STATUS
EFIAPI 
PciCfg2Write (
  IN CONST  EFI_PEI_SERVICES          **PeiServices,
  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
  IN        UINT64                    Address,
  IN OUT    VOID                      *Buffer
);


/**
  PCI read-modify-write operation.

  @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. Type
                          EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().

  @param  Address         The physical address of the access.

  @param  SetBits         Points to value to bitwise-OR with the read configuration value.

                          The size of the value is determined by Width.

  @param  ClearBits       Points to the value to negate and bitwise-AND with the read configuration value.
                          The size of the value is determined by Width.


  @retval EFI_SUCCESS           The function completed successfully.

  @retval EFI_DEVICE_ERROR      There was a problem with the transaction.

  @retval EFI_DEVICE_NOT_READY  The device is not capable of supporting
                                the operation at this time.

**/
EFI_STATUS
EFIAPI 
PciCfg2Modify (
  IN CONST  EFI_PEI_SERVICES          **PeiServices,
  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
  IN        UINT64                    Address,
  IN        VOID                      *SetBits,
  IN        VOID                      *ClearBits
);



/**
  PCI read operation.

  @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  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.

**/
EFI_STATUS
EFIAPI 
PciCfgRead (
  IN EFI_PEI_SERVICES             **PeiServices,
  IN EFI_PEI_PCI_CFG_PPI          *This,
  IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,
  IN UINT64                       Address,
  IN OUT VOID                     *Buffer
  );

/**
  PCI write operation.

  @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  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.

**/
EFI_STATUS
EFIAPI 
PciCfgWrite (
  IN EFI_PEI_SERVICES             **PeiServices,
  IN EFI_PEI_PCI_CFG_PPI          *This,
  IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,
  IN UINT64                       Address,
  IN OUT VOID                     *Buffer
  );

/**
  PCI read-modify-write operation.

  @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  SetBits        Value of the bits to set.
  @param  ClearBits      Value of the bits to clear.

  @retval EFI_SUCCESS           The function completed successfully.

**/
EFI_STATUS
EFIAPI 
PciCfgModify (
  IN EFI_PEI_SERVICES             **PeiServices,
  IN EFI_PEI_PCI_CFG_PPI          *This,
  IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,
  IN UINT64                       Address,
  IN UINTN                        SetBits,
  IN UINTN                        ClearBits
  );

//
// Global Variables
//
extern EFI_PEI_PCI_CFG_PPI    gPciCfgPpi;
extern EFI_PEI_PPI_DESCRIPTOR gPciCfgPpiList;


#endif
