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2024-03-22 a0752693d998599af469473b8dc239ef973a012f

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/** @file 
 
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR> 
SPDX-License-Identifier: BSD-2-Clause-Patent 
 
**/ 
 
#include <Uefi.h> 
#include <PiDxe.h> 
#include <Library/TestPointCheckLib.h> 
#include <Library/TestPointLib.h> 
#include <Library/DebugLib.h> 
#include <Library/UefiLib.h> 
#include <Library/PrintLib.h> 
#include <Library/BaseMemoryLib.h> 
#include <IndustryStandard/Acpi.h> 
#include <IndustryStandard/MemoryMappedConfigurationSpaceAccessTable.h> 
 
VOID 
DumpCharArray ( 
  IN CHAR8  *Ch, 
  IN UINTN  Size 
  ); 
 
VOID 
DumpAcpiTableHeader ( 
  IN EFI_ACPI_DESCRIPTION_HEADER  *Table 
  ); 
 
BOOLEAN 
IsMmioExit ( 
  IN EFI_PHYSICAL_ADDRESS  BaseAddress, 
  IN UINT64                Length, 
  IN BOOLEAN               CheckAllocated 
  ); 
 
EFI_STATUS 
DumpAcpiMcfg ( 
  IN EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_HEADER  *Mcfg 
  ) 
{ 
  EFI_ACPI_MEMORY_MAPPED_ENHANCED_CONFIGURATION_SPACE_BASE_ADDRESS_ALLOCATION_STRUCTURE   *Struct; 
  UINTN                                                                                   Count; 
  UINTN                                                                                   Index; 
 
  DumpAcpiTableHeader (&Mcfg->Header); 
 
  Count = Mcfg->Header.Length - sizeof(EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_HEADER); 
  Count = Count / sizeof(EFI_ACPI_MEMORY_MAPPED_ENHANCED_CONFIGURATION_SPACE_BASE_ADDRESS_ALLOCATION_STRUCTURE); 
  Struct = (VOID *)(Mcfg + 1); 
  for (Index = 0; Index < Count; Index++) { 
    DEBUG ((DEBUG_INFO, "         ")); 
    DEBUG ((DEBUG_INFO, " Segment :")); 
    DEBUG ((DEBUG_INFO, " BaseAddress=0x%016lx", Struct->BaseAddress)); 
    DEBUG ((DEBUG_INFO, " Seg=0x%04x Bus=(0x%02x-0x%02x)", 
      Struct->PciSegmentGroupNumber, 
      Struct->StartBusNumber, 
      Struct->EndBusNumber 
      )); 
    DEBUG ((DEBUG_INFO, "\n")); 
    Struct++; 
  } 
  return EFI_SUCCESS; 
} 
 
EFI_STATUS 
CheckAcpiMcfg ( 
  IN EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_HEADER  *Mcfg 
  ) 
{ 
  EFI_ACPI_MEMORY_MAPPED_ENHANCED_CONFIGURATION_SPACE_BASE_ADDRESS_ALLOCATION_STRUCTURE   *Struct; 
  UINTN                                                                                   Count; 
  UINTN                                                                                   Index; 
 
  Count = Mcfg->Header.Length - sizeof(EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_HEADER); 
  Count = Count / sizeof(EFI_ACPI_MEMORY_MAPPED_ENHANCED_CONFIGURATION_SPACE_BASE_ADDRESS_ALLOCATION_STRUCTURE); 
  Struct = (VOID *)(Mcfg + 1); 
  for (Index = 0; Index < Count; Index++) { 
    if (!IsMmioExit (Struct->BaseAddress, (Struct->EndBusNumber - Struct->StartBusNumber + 1) * SIZE_1MB, TRUE)) { 
      DEBUG ((DEBUG_ERROR, "MCFG resource (0x%x) is not reported correctly.\n", Struct->BaseAddress)); 
      return EFI_NOT_STARTED; 
    } 
    Struct++; 
  } 
  return EFI_SUCCESS; 
}