OvmfPkg/Library/BasePciCapPciSegmentLib/BasePciCapPciSegmentLib.h

   1 /** @file
   2   Plug a PciSegmentLib backend into PciCapLib, for config space access --
   3   internal macro and type definitions.
   4
   5   Copyright (C) 2018, Red Hat, Inc.
   6
   7   SPDX-License-Identifier: BSD-2-Clause-Patent
   8 **/
   9
  10 #ifndef __BASE_PCI_CAP_PCI_SEGMENT_LIB_H__
  11 #define __BASE_PCI_CAP_PCI_SEGMENT_LIB_H__
  12
  13 #include <Library/DebugLib.h>
  14
  15 #include <Library/PciCapPciSegmentLib.h>
  16
  17 #define SEGMENT_DEV_SIG  SIGNATURE_64 ('P', 'C', 'P', 'S', 'G', 'M', 'N', 'T')
  18
  19 typedef struct {
  20   //
  21   // Signature identifying the derived class.
  22   //
  23   UINT64            Signature;
  24   //
  25   // Members added by the derived class, specific to the use of PciSegmentLib.
  26   //
  27   PCI_CAP_DOMAIN    MaxDomain;
  28   UINT16            SegmentNr;
  29   UINT8             BusNr;
  30   UINT8             DeviceNr;
  31   UINT8             FunctionNr;
  32   //
  33   // Base class.
  34   //
  35   PCI_CAP_DEV       BaseDevice;
  36 } SEGMENT_DEV;
  37
  38 #define SEGMENT_DEV_FROM_PCI_CAP_DEV(PciDevice) \
  39   CR (PciDevice, SEGMENT_DEV, BaseDevice, SEGMENT_DEV_SIG)
  40
  41 #endif // __BASE_PCI_CAP_PCI_SEGMENT_LIB_H__