/** @file
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Uefi.h>
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#include <PiDxe.h>
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#include <Library/TestPointCheckLib.h>
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#include <Library/TestPointLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiLib.h>
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#include <Library/PrintLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/IoLib.h>
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#include <IndustryStandard/Acpi.h>
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#include <IndustryStandard/DmaRemappingReportingTable.h>
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#include <IndustryStandard/Vtd.h>
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VOID *
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TestPointGetAcpi (
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IN UINT32 Signature
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);
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EFI_STATUS
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CheckDrhd (
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IN EFI_ACPI_DMAR_HEADER *Dmar
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)
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{
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EFI_ACPI_DMAR_STRUCTURE_HEADER *DmarStructHeader;
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INTN DmarLen;
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EFI_ACPI_DMAR_DRHD_HEADER *Drhd;
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UINT32 Reg32;
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//
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// Sub table
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//
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DmarLen = Dmar->Header.Length - sizeof(EFI_ACPI_DMAR_HEADER);
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DmarStructHeader = (EFI_ACPI_DMAR_STRUCTURE_HEADER *)(Dmar + 1);
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while (DmarLen > 0) {
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switch (DmarStructHeader->Type) {
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case EFI_ACPI_DMAR_TYPE_DRHD:
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Drhd = (EFI_ACPI_DMAR_DRHD_HEADER *)DmarStructHeader;
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Reg32 = MmioRead32 ((UINTN)Drhd->RegisterBaseAddress + R_GSTS_REG);
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if ((Reg32 & B_GSTS_REG_TE) == 0) {
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return EFI_INVALID_PARAMETER;
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}
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break;
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case EFI_ACPI_DMAR_TYPE_RMRR:
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case EFI_ACPI_DMAR_TYPE_ATSR:
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case EFI_ACPI_DMAR_TYPE_RHSA:
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case EFI_ACPI_DMAR_TYPE_ANDD:
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default:
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break;
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}
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DmarStructHeader = (EFI_ACPI_DMAR_STRUCTURE_HEADER *)((UINT8 *)DmarStructHeader + DmarStructHeader->Length);
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DmarLen -= DmarStructHeader->Length;
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}
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return EFI_SUCCESS;
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}
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EFI_STATUS
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TestPointVtdEngine (
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VOID
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)
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{
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EFI_ACPI_DMAR_HEADER *Dmar;
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EFI_STATUS Status;
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Status = EFI_SUCCESS;
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Dmar = TestPointGetAcpi (EFI_ACPI_4_0_DMA_REMAPPING_TABLE_SIGNATURE);
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if (Dmar == NULL) {
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DEBUG ((DEBUG_ERROR, "No DMAR table\n"));
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Status = EFI_INVALID_PARAMETER;
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} else {
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Status = CheckDrhd (Dmar);
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}
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if (EFI_ERROR(Status)) {
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TestPointLibAppendErrorString (
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PLATFORM_TEST_POINT_ROLE_PLATFORM_IBV,
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NULL,
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TEST_POINT_BYTE3_END_OF_DXE_DMA_PROTECTION_ENABLED_ERROR_CODE \
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TEST_POINT_READY_TO_BOOT \
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TEST_POINT_BYTE3_END_OF_DXE_DXE_DMA_PROTECTION_ENABLED_ERROR_STRING
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);
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}
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return Status;
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}
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