MdePkg/Library/PciSegmentLibSegmentInfo/PciSegmentLibCommon.h

   1 /** @file
   2   Provide common routines used by BasePciSegmentLibSegmentInfo and
   3   DxeRuntimePciSegmentLibSegmentInfo libraries.
   4
   5   Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
   6   SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #ifndef _PCI_SEGMENT_LIB_COMMON_H_
  11 #define _PCI_SEGMENT_LIB_COMMON_H_
  12
  13 #include <Base.h>
  14 #include <IndustryStandard/PciExpress21.h>
  15 #include <Library/BaseLib.h>
  16 #include <Library/DebugLib.h>
  17 #include <Library/IoLib.h>
  18 #include <Library/PciSegmentLib.h>
  19 #include <Library/PciSegmentInfoLib.h>
  20
  21 /**
  22   Return the linear address for the physical address.
  23
  24   @param  Address  The physical address.
  25
  26   @retval The linear address.
  27 **/
  28 UINTN
  29 PciSegmentLibVirtualAddress (
  30   IN UINTN                     Address
  31   );
  32
  33 /**
  34   Internal function that converts PciSegmentLib format address that encodes the PCI Bus, Device,
  35   Function and Register to ECAM (Enhanced Configuration Access Mechanism) address.
  36
  37   @param Address     The address that encodes the PCI Bus, Device, Function and
  38                      Register.
  39   @param SegmentInfo An array of PCI_SEGMENT_INFO holding the segment information.
  40   @param Count       Number of segments.
  41
  42   @retval ECAM address.
  43 **/
  44 UINTN
  45 PciSegmentLibGetEcamAddress (
  46   IN UINT64                    Address,
  47   IN CONST PCI_SEGMENT_INFO    *SegmentInfo,
  48   IN UINTN                     Count
  49   );
  50
  51 #endif