/** @file
  Ihe internal heder file includes the required Protocol/Guid/Library
  and the shared function APIs.

Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef _INTERNAL_PLATFORM_DRIVER_OVERRIDE_H_
#define _INTERNAL_PLATFORM_DRIVER_OVERRIDE_H_

#include <PiDxe.h>

#include <Protocol/HiiConfigAccess.h>
#include <Protocol/HiiConfigRouting.h>
#include <Protocol/HiiDatabase.h>
#include <Protocol/FormBrowser2.h>
#include <Protocol/LoadedImage.h>
#include <Protocol/FirmwareVolume2.h>
#include <Protocol/PciIo.h>
#include <Protocol/BusSpecificDriverOverride.h>
#include <Protocol/ComponentName2.h>
#include <Protocol/ComponentName.h>
#include <Protocol/DriverBinding.h>
#include <Protocol/DevicePath.h>
#include <Protocol/PlatformDriverOverride.h>
#include <Guid/MdeModuleHii.h>
#include <Guid/VariableFormat.h>

#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>
#include <Library/PrintLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DevicePathLib.h>
#include <Library/DxeServicesTableLib.h>
#include <Library/HiiLib.h>

/**
  Free all the mapping database memory resource and initialize the mapping list entry.

  @param  MappingDataBase          Mapping database list entry pointer

  @retval EFI_INVALID_PARAMETER    mapping database list entry is NULL
  @retval EFI_SUCCESS              Free success

**/
EFI_STATUS
EFIAPI
FreeMappingDatabase (
  IN  OUT  LIST_ENTRY            *MappingDataBase
  )
;

/**
  Read the NV environment variable(s) that contain the override mappings from Controller Device Path to
  a set of Driver Device Paths, and create the mapping database in memory to contain these variable info.

  @param  MappingDataBase          Mapping database list entry pointer

  @retval EFI_INVALID_PARAMETER    MappingDataBase pointer is null
  @retval EFI_NOT_FOUND            Cannot find the 'PlatDriOver' NV variable
  @retval EFI_VOLUME_CORRUPTED     The found NV variable is corrupted
  @retval EFI_SUCCESS              Create the mapping database in memory successfully

**/
EFI_STATUS
EFIAPI
InitOverridesMapping (
  OUT  LIST_ENTRY            *MappingDataBase
  )
;

/**
  Save the memory mapping database into NV environment variable(s).
  If MappingDataBase list is empty, then delete all platform override NV variables.

  @param  MappingDataBase          Mapping database list entry pointer

  @retval EFI_INVALID_PARAMETER    MappingDataBase pointer is null
  @retval EFI_SUCCESS              Save memory mapping database successfully

**/
EFI_STATUS
EFIAPI
SaveOverridesMapping (
  IN  LIST_ENTRY              *MappingDataBase
  )
;

/**
  Retrieves the image handle of the platform override driver for a controller in the system from the memory mapping database.

  @param  ControllerHandle         The device handle of the controller to check if
                                   a driver override exists.
  @param  DriverImageHandle        On output, a pointer to the next driver handle.
                                   Passing in a pointer to NULL, will return the
                                   first driver handle for ControllerHandle.
  @param  MappingDataBase          MappingDataBase - Mapping database list entry
                                   pointer
  @param  CallerImageHandle        The caller driver's image handle, for
                                   UpdateFvFileDevicePath use.

  @retval EFI_INVALID_PARAMETER    The handle specified by ControllerHandle is not
                                   a valid handle.  Or DriverImagePath is not a
                                   device path that was returned on a previous call
                                   to GetDriverPath().
  @retval EFI_NOT_FOUND            A driver override for ControllerHandle was not
                                   found.
  @retval EFI_UNSUPPORTED          The operation is not supported.
  @retval EFI_SUCCESS              The driver override for ControllerHandle was
                                   returned in DriverImagePath.

**/
EFI_STATUS
EFIAPI
GetDriverFromMapping (
  IN     EFI_HANDLE                                     ControllerHandle,
  IN OUT EFI_HANDLE                                     *DriverImageHandle,
  IN     LIST_ENTRY                                     *MappingDataBase,
  IN     EFI_HANDLE                                     CallerImageHandle
  )
;

/**
  Check mapping database whether already has the mapping info which
  records the input Controller to input DriverImage.

  @param  ControllerDevicePath     The controller device path is to be check.
  @param  DriverImageDevicePath    The driver image device path is to be check.
  @param  MappingDataBase          Mapping database list entry pointer
  @param  DriverInfoNum            the controller's total override driver number
  @param  DriverImageNO            The driver order number for the input DriverImage.
                                   If the DriverImageDevicePath is NULL, DriverImageNO is not set.

  @retval EFI_INVALID_PARAMETER    ControllerDevicePath or MappingDataBase is NULL.
  @retval EFI_NOT_FOUND            ControllerDevicePath is not found in MappingDataBase or
                                   DriverImageDevicePath is not found in the found DriverImage Info list.
  @retval EFI_SUCCESS              The controller's total override driver number and
                                   input DriverImage's order number is correctly return.
**/
EFI_STATUS
EFIAPI
CheckMapping (
  IN     EFI_DEVICE_PATH_PROTOCOL                       *ControllerDevicePath,
  IN     EFI_DEVICE_PATH_PROTOCOL                       *DriverImageDevicePath  OPTIONAL,
  IN     LIST_ENTRY                                     *MappingDataBase,
  OUT    UINT32                                         *DriverInfoNum  OPTIONAL,
  OUT    UINT32                                         *DriverImageNO  OPTIONAL
  )
;

/**
  Insert a driver image as a controller's override driver into the mapping database.
  The driver image's order number is indicated by DriverImageNO.

  @param  ControllerDevicePath     The controller device path need to add a
                                   override driver image item
  @param  DriverImageDevicePath    The driver image device path need to be insert
  @param  MappingDataBase          Mapping database list entry pointer
  @param  DriverImageNO            The inserted order number. If this number is taken,
                                   the larger available number will be used.

  @retval EFI_INVALID_PARAMETER    ControllerDevicePath is NULL, or DriverImageDevicePath is NULL
                                   or MappingDataBase is NULL
  @retval EFI_ALREADY_STARTED      The input Controller to input DriverImage has been
                                   recorded into the mapping database.
  @retval EFI_SUCCESS              The Controller and DriverImage are inserted into
                                   the mapping database successfully.

**/
EFI_STATUS
EFIAPI
InsertDriverImage (
  IN     EFI_DEVICE_PATH_PROTOCOL                       *ControllerDevicePath,
  IN     EFI_DEVICE_PATH_PROTOCOL                       *DriverImageDevicePath,
  IN     LIST_ENTRY                                     *MappingDataBase,
  IN     UINT32                                         DriverImageNO
  )
;

/**
  Delete a controller's override driver from the mapping database.

  @param  ControllerDevicePath     The controller device path will be deleted
                                   when all drivers images on it are removed.
  @param  DriverImageDevicePath    The driver image device path will be delete.
                                   If NULL, all driver image will be delete.
  @param  MappingDataBase          Mapping database list entry pointer

  @retval EFI_INVALID_PARAMETER    ControllerDevicePath is NULL, or MappingDataBase is NULL
  @retval EFI_NOT_FOUND            ControllerDevicePath is not found in MappingDataBase or
                                   DriverImageDevicePath is not found in the found DriverImage Info list.
  @retval EFI_SUCCESS              Delete the specified driver successfully.

**/
EFI_STATUS
EFIAPI
DeleteDriverImage (
  IN     EFI_DEVICE_PATH_PROTOCOL                       *ControllerDevicePath,
  IN     EFI_DEVICE_PATH_PROTOCOL                       *DriverImageDevicePath,
  IN     LIST_ENTRY                                     *MappingDataBase
  )
;

#endif