IntelSiliconPkg/Vtd: Add DMA_CTRL_PLATFORM_OPT_IN_FLAG dump

[mirror_edk2.git] / IntelSiliconPkg / Feature / VTd / IntelVTdDxe / DmarAcpiTable.c

diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c
index 2456b0c48ff19f93848a3965ae85e205948baada..24723fe4972aeb9eb0013288eb4bdc87843e06d4 100644 (file)
--- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c
+++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c
@@ -1,6 +1,6 @@
 /** @file\r
 \r
-  Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r
+  Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>\r
   This program and the accompanying materials\r
   are licensed and made available under the terms and conditions of the BSD License\r
   which accompanies this distribution.  The full text of the license may be found at\r
@@ -27,7 +27,7 @@ typedef struct {
 \r
 #pragma pack()\r
 \r
-EFI_ACPI_DMAR_HEADER  *mAcpiDmarTable;\r
+EFI_ACPI_DMAR_HEADER  *mAcpiDmarTable = NULL;\r
 \r
 /**\r
   Dump DMAR DeviceScopeEntry.\r
@@ -498,6 +498,10 @@ DumpAcpiDMAR (
     "      X2APIC_OPT_OUT_SET ................................. 0x%02x\n",\r
     Dmar->Flags & EFI_ACPI_DMAR_FLAGS_X2APIC_OPT_OUT\r
     ));\r
+  DEBUG ((DEBUG_INFO,\r
+    "      DMA_CTRL_PLATFORM_OPT_IN_FLAG ...................... 0x%02x\n",\r
+    Dmar->Flags & EFI_ACPI_DMAR_FLAGS_DMA_CTRL_PLATFORM_OPT_IN_FLAG\r
+    ));\r
 \r
   DmarLen  = Dmar->Header.Length - sizeof(EFI_ACPI_DMAR_HEADER);\r
   DmarHeader = (EFI_ACPI_DMAR_STRUCTURE_HEADER *)(Dmar + 1);\r
@@ -806,8 +810,6 @@ ParseDmarAcpiTableDrhd (
     return EFI_OUT_OF_RESOURCES;\r
   }\r
 \r
-  mVtdHostAddressWidthMask = LShiftU64 (1ull, mAcpiDmarTable->HostAddressWidth) - 1;\r
-\r
   VtdIndex = 0;\r
   DmarHeader = (EFI_ACPI_DMAR_STRUCTURE_HEADER *)((UINTN)(mAcpiDmarTable + 1));\r
   while ((UINTN)DmarHeader < (UINTN)mAcpiDmarTable + mAcpiDmarTable->Header.Length) {\r
@@ -889,7 +891,7 @@ ScanTableInRSDT (
   EntryPtr = &Rsdt->Entry;\r
   for (Index = 0; Index < EntryCount; Index ++, EntryPtr ++) {\r
     Table = (EFI_ACPI_DESCRIPTION_HEADER*)((UINTN)(*EntryPtr));\r
-    if (Table->Signature == Signature) {\r
+    if ((Table != NULL) && (Table->Signature == Signature)) {\r
       return Table;\r
     }\r
   }\r
@@ -923,7 +925,7 @@ ScanTableInXSDT (
   for (Index = 0; Index < EntryCount; Index ++) {\r
     CopyMem (&EntryPtr, (VOID *)(BasePtr + Index * sizeof(UINT64)), sizeof(UINT64));\r
     Table = (EFI_ACPI_DESCRIPTION_HEADER*)((UINTN)(EntryPtr));\r
-    if (Table->Signature == Signature) {\r
+    if ((Table != NULL) && (Table->Signature == Signature)) {\r
       return Table;\r
     }\r
   }\r
@@ -978,8 +980,9 @@ FindAcpiPtr (
 /**\r
   Get the DMAR ACPI table.\r
 \r
-  @retval EFI_SUCCESS    The DMAR ACPI table is got.\r
-  @retval EFI_NOT_FOUND  The DMAR ACPI table is not found.\r
+  @retval EFI_SUCCESS           The DMAR ACPI table is got.\r
+  @retval EFI_ALREADY_STARTED   The DMAR ACPI table has been got previously.\r
+  @retval EFI_NOT_FOUND         The DMAR ACPI table is not found.\r
 **/\r
 EFI_STATUS\r
 GetDmarAcpiTable (\r
@@ -989,6 +992,10 @@ GetDmarAcpiTable (
   VOID                              *AcpiTable;\r
   EFI_STATUS                        Status;\r
 \r
+  if (mAcpiDmarTable != NULL) {\r
+    return EFI_ALREADY_STARTED;\r
+  }\r
+\r
   AcpiTable = NULL;\r
   Status = EfiGetSystemConfigurationTable (\r
              &gEfiAcpi20TableGuid,\r
@@ -996,20 +1003,23 @@ GetDmarAcpiTable (
              );\r
   if (EFI_ERROR (Status)) {\r
     Status = EfiGetSystemConfigurationTable (\r
-               &gEfiAcpiTableGuid,\r
+               &gEfiAcpi10TableGuid,\r
                &AcpiTable\r
                );\r
   }\r
+  if (EFI_ERROR (Status)) {\r
+    return EFI_NOT_FOUND;\r
+  }\r
   ASSERT (AcpiTable != NULL);\r
 \r
   mAcpiDmarTable = FindAcpiPtr (\r
                       (EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *)AcpiTable,\r
                       EFI_ACPI_4_0_DMA_REMAPPING_TABLE_SIGNATURE\r
                       );\r
-  DEBUG ((DEBUG_INFO,"DMAR Table - 0x%08x\n", mAcpiDmarTable));\r
   if (mAcpiDmarTable == NULL) {\r
-    return EFI_UNSUPPORTED;\r
+    return EFI_NOT_FOUND;\r
   }\r
+  DEBUG ((DEBUG_INFO,"DMAR Table - 0x%08x\n", mAcpiDmarTable));\r
   VtdDumpDmarTable();\r
 \r
   return EFI_SUCCESS;\r