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/** @file
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#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 <Library/IoLib.h>
#include <IndustryStandard/Acpi.h>
#include <IndustryStandard/DmaRemappingReportingTable.h>
#include <IndustryStandard/Vtd.h>
EFI_STATUS
CheckDrhd (
IN EFI_ACPI_DMAR_HEADER *Dmar
)
{
EFI_ACPI_DMAR_STRUCTURE_HEADER *DmarStructHeader;
INTN DmarLen;
EFI_ACPI_DMAR_DRHD_HEADER *Drhd;
UINT32 Reg32;
//
// Sub table
//
DmarLen = Dmar->Header.Length - sizeof(EFI_ACPI_DMAR_HEADER);
DmarStructHeader = (EFI_ACPI_DMAR_STRUCTURE_HEADER *)(Dmar + 1);
while (DmarLen > 0) {
switch (DmarStructHeader->Type) {
case EFI_ACPI_DMAR_TYPE_DRHD:
Drhd = (EFI_ACPI_DMAR_DRHD_HEADER *)DmarStructHeader;
Reg32 = MmioRead32 ((UINTN)Drhd->RegisterBaseAddress + R_GSTS_REG);
if ((Reg32 & B_GSTS_REG_TE) == 0) {
return EFI_INVALID_PARAMETER;
}
break;
case EFI_ACPI_DMAR_TYPE_RMRR:
case EFI_ACPI_DMAR_TYPE_ATSR:
case EFI_ACPI_DMAR_TYPE_RHSA:
case EFI_ACPI_DMAR_TYPE_ANDD:
default:
break;
}
DmarStructHeader = (EFI_ACPI_DMAR_STRUCTURE_HEADER *)((UINT8 *)DmarStructHeader + DmarStructHeader->Length);
DmarLen -= DmarStructHeader->Length;
}
return EFI_SUCCESS;
}
VOID *
TestPointGetAcpi (
IN UINT32 Signature
);
EFI_STATUS
TestPointVtdEngine (
VOID
)
{
EFI_ACPI_DMAR_HEADER *Dmar;
EFI_STATUS Status;
Status = EFI_SUCCESS;
Dmar = TestPointGetAcpi (EFI_ACPI_4_0_DMA_REMAPPING_TABLE_SIGNATURE);
if (Dmar == NULL) {
DEBUG ((DEBUG_ERROR, "No DMAR table\n"));
Status = EFI_INVALID_PARAMETER;
} else {
Status = CheckDrhd (Dmar);
}
if (EFI_ERROR(Status)) {
TestPointLibAppendErrorString (
PLATFORM_TEST_POINT_ROLE_PLATFORM_IBV,
NULL,
TEST_POINT_BYTE3_END_OF_DXE_DMA_PROTECTION_ENABLED_ERROR_CODE \
TEST_POINT_READY_TO_BOOT \
TEST_POINT_BYTE3_END_OF_DXE_DXE_DMA_PROTECTION_ENABLED_ERROR_STRING
);
}
return Status;
}
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