MdePkg/Library/UefiPciSegmentLibPciRootBridgeIo/PciSegmentLib.h

   1 /** @file
   2   Include file of PciSegmentPciRootBridgeIo Library.
   3
   4   Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #ifndef __DXE_PCI_SEGMENT_LIB__
  10 #define __DXE_PCI_SEGMENT_LIB__
  11
  12 #include <Protocol/PciRootBridgeIo.h>
  13
  14 #include <Library/PciSegmentLib.h>
  15 #include <Library/BaseLib.h>
  16 #include <Library/MemoryAllocationLib.h>
  17 #include <Library/UefiBootServicesTableLib.h>
  18 #include <Library/DebugLib.h>
  19
  20 #include <IndustryStandard/Acpi.h>
  21
  22 typedef struct {
  23   EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL    *PciRootBridgeIo;
  24   UINT32                             SegmentNumber;
  25   UINT64                             MinBusNumber;
  26   UINT64                             MaxBusNumber;
  27 } PCI_ROOT_BRIDGE_DATA;
  28
  29 /**
  30   Assert the validity of a PCI Segment address.
  31   A valid PCI Segment address should not contain 1's in bits 28..31 and 48..63
  32
  33   @param  A The address to validate.
  34   @param  M Additional bits to assert to be zero.
  35
  36 **/
  37 #define ASSERT_INVALID_PCI_SEGMENT_ADDRESS(A, M) \
  38   ASSERT (((A) & (0xffff0000f0000000ULL | (M))) == 0)
  39
  40 /**
  41   Translate PCI Lib address into format of PCI Root Bridge I/O Protocol
  42
  43   @param  A  The address that encodes the PCI Bus, Device, Function and
  44              Register.
  45
  46 **/
  47 #define PCI_TO_PCI_ROOT_BRIDGE_IO_ADDRESS(A) \
  48   ((((UINT32)(A) << 4) & 0xff000000) | (((UINT32)(A) >> 4) & 0x00000700) | (((UINT32)(A) << 1) & 0x001f0000) | (LShiftU64((A) & 0xfff, 32)))
  49
  50 #endif