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2024-03-22 a0752693d998599af469473b8dc239ef973a012f

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/** @file 
  This file contains the tests for the IntegratedDeviceDMAProtection bit 
 
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR> 
SPDX-License-Identifier: BSD-2-Clause-Patent 
 
**/ 
 
#include "HstiSiliconDxe.h" 
 
/** 
  Run tests for IntegratedDeviceDMAProtection bit 
**/ 
VOID 
CheckIntegratedDeviceDmaProtection ( 
  VOID 
  ) 
{ 
  EFI_STATUS      Status; 
  BOOLEAN         Result; 
  UINT32          MchBar; 
  UINT32          Vtd1; 
  UINT32          Vtd2; 
  CHAR16          *HstiErrorString; 
 
  if ((mFeatureImplemented[0] & HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION) == 0) { 
    return; 
  } 
 
  Result = TRUE; 
 
  MchBar = (UINT32) MmioRead64 (MmPciBase (DEFAULT_PCI_BUS_NUMBER_PCH,SA_MC_DEV,SA_MC_FUN) + R_SA_MCHBAR) & B_SA_MCHBAR_MCHBAR_MASK; 
 
  DEBUG ((DEBUG_INFO, "  VTd check\n")); 
 
  DEBUG ((DEBUG_INFO, "    1. VTd supported\n")); 
 
  if ((MmioRead32 (MmPciBase (DEFAULT_PCI_BUS_NUMBER_PCH,SA_MC_DEV,SA_MC_FUN) + R_SA_MC_CAPID0_A_OFFSET) & BIT23) != 0) { 
    DEBUG ((DEBUG_INFO, "Fail: VTd not supported\n")); 
 
 
    HstiErrorString = BuildHstiErrorString (HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION_ERROR_CODE_1 ,HSTI_INTEGRATED_DEVICE_DMA_PROTECTION, HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION_ERROR_STRING_1); 
    Status = HstiLibAppendErrorString ( 
               PLATFORM_SECURITY_ROLE_PLATFORM_REFERENCE, 
               NULL, 
               HstiErrorString 
               ); 
    ASSERT_EFI_ERROR (Status); 
    Result = FALSE; 
    FreePool (HstiErrorString); 
  } 
 
  if ((MmioRead32 (MmPciBase (DEFAULT_PCI_BUS_NUMBER_PCH,SA_MC_DEV,SA_MC_FUN) + R_SA_MC_CAPID0_A_OFFSET) & BIT23) == 0) { 
    DEBUG ((DEBUG_INFO, "    2. VTd enabled\n")); 
 
    if (MmioRead16 (MmPciBase (DEFAULT_PCI_BUS_NUMBER_PCH,2,0) + R_SA_IGD_VID) != 0xFFFF) { 
      Vtd1 = MmioRead32 (MchBar + R_SA_MCHBAR_VTD1_OFFSET); 
      if (((Vtd1 & BIT0) == 0) || 
          ((Vtd1 & 0xfffffffe) == 0)) { 
        DEBUG ((DEBUG_INFO, "Fail: VTd not enabled\n")); 
 
 
        HstiErrorString = BuildHstiErrorString (HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION_ERROR_CODE_1 ,HSTI_INTEGRATED_DEVICE_DMA_PROTECTION, HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION_ERROR_STRING_1); 
        Status = HstiLibAppendErrorString ( 
                   PLATFORM_SECURITY_ROLE_PLATFORM_REFERENCE, 
                   NULL, 
                   HstiErrorString 
                   ); 
        ASSERT_EFI_ERROR (Status); 
        Result = FALSE; 
        FreePool (HstiErrorString); 
      } 
 
      if ((Vtd1 & 0xfffffffe) != 0) { 
        DEBUG ((DEBUG_INFO, "    3. VTd configured correctly\n")); 
 
        if ((MmioRead32 ((Vtd1 & 0xfffffffe) + 0xFF0) & BIT31) == 0) { 
          DEBUG ((DEBUG_INFO, "Fail: VTd not configured correctly\n")); 
 
          HstiErrorString = BuildHstiErrorString (HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION_ERROR_CODE_1 ,HSTI_INTEGRATED_DEVICE_DMA_PROTECTION, HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION_ERROR_STRING_1); 
          Status = HstiLibAppendErrorString ( 
                     PLATFORM_SECURITY_ROLE_PLATFORM_REFERENCE, 
                     NULL, 
                     HstiErrorString 
                     ); 
          ASSERT_EFI_ERROR (Status); 
          Result = FALSE; 
          FreePool (HstiErrorString); 
        } 
      } 
    } 
 
    DEBUG ((DEBUG_INFO, "    2. VTd enabled\n")); 
 
    Vtd2 = MmioRead32 (MchBar + R_SA_MCHBAR_VTD2_OFFSET); 
    if (((Vtd2 & BIT0) == 0) || 
        ((Vtd2 & 0xfffffffe) == 0)) { 
      DEBUG ((DEBUG_INFO, "Fail: VTd2 not enabled\n")); 
 
      HstiErrorString = BuildHstiErrorString (HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION_ERROR_CODE_1 ,HSTI_INTEGRATED_DEVICE_DMA_PROTECTION, HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION_ERROR_STRING_1); 
      Status = HstiLibAppendErrorString ( 
                 PLATFORM_SECURITY_ROLE_PLATFORM_REFERENCE, 
                 NULL, 
                 HstiErrorString 
                 ); 
      ASSERT_EFI_ERROR (Status); 
      Result = FALSE; 
      FreePool (HstiErrorString); 
    } 
 
    if ((Vtd2 & 0xfffffffe) != 0) { 
      DEBUG ((DEBUG_INFO, "    3. VTd configured correctly\n")); 
 
      if ((MmioRead32 ((Vtd2 & 0xfffffffe) + 0xFF0) & BIT31) == 0) { 
        DEBUG ((DEBUG_INFO, "Fail: VTd2 not configured correctly\n")); 
 
        HstiErrorString = BuildHstiErrorString (HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION_ERROR_CODE_1 ,HSTI_INTEGRATED_DEVICE_DMA_PROTECTION, HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION_ERROR_STRING_1); 
        Status = HstiLibAppendErrorString ( 
                   PLATFORM_SECURITY_ROLE_PLATFORM_REFERENCE, 
                   NULL, 
                   HstiErrorString 
                   ); 
        ASSERT_EFI_ERROR (Status); 
        Result = FALSE; 
        FreePool (HstiErrorString); 
      } 
    } 
  } 
 
  // 
  // ALL PASS 
  // 
  if (Result) { 
    Status = HstiLibSetFeaturesVerified ( 
               PLATFORM_SECURITY_ROLE_PLATFORM_REFERENCE, 
               NULL, 
               0, 
               HSTI_BYTE0_INTEGRATED_DEVICE_DMA_PROTECTION 
               ); 
    ASSERT_EFI_ERROR (Status); 
  } 
 
  return; 
}