/** @file
  Plug a PciSegmentLib backend into PciCapLib, for config space access --
  internal macro and type definitions.

  Copyright (C) 2018, Red Hat, Inc.

  SPDX-License-Identifier: BSD-2-Clause-Patent
**/

#ifndef __BASE_PCI_CAP_PCI_SEGMENT_LIB_H__
#define __BASE_PCI_CAP_PCI_SEGMENT_LIB_H__

#include <Library/DebugLib.h>

#include <Library/PciCapPciSegmentLib.h>

#define SEGMENT_DEV_SIG SIGNATURE_64 ('P', 'C', 'P', 'S', 'G', 'M', 'N', 'T')

typedef struct {
  //
  // Signature identifying the derived class.
  //
  UINT64 Signature;
  //
  // Members added by the derived class, specific to the use of PciSegmentLib.
  //
  PCI_CAP_DOMAIN MaxDomain;
  UINT16         SegmentNr;
  UINT8          BusNr;
  UINT8          DeviceNr;
  UINT8          FunctionNr;
  //
  // Base class.
  //
  PCI_CAP_DEV BaseDevice;
} SEGMENT_DEV;

#define SEGMENT_DEV_FROM_PCI_CAP_DEV(PciDevice) \
  CR (PciDevice, SEGMENT_DEV, BaseDevice, SEGMENT_DEV_SIG)

#endif // __BASE_PCI_CAP_PCI_SEGMENT_LIB_H__