[edk2-platforms][PATCH V1 1/2] Platform/Sgi: Add smmu node in the iort acpi table

["Vivek Kumar Gautam" <vivek.gautam@arm.com>]

Add the generic SMMUv3 type node in the iort table and
setup the rid->stream-id->device-id mapping accordingly.

Signed-off-by: Vivek Gautam <vivek.gautam@arm.com>
---
 Platform/ARM/SgiPkg/AcpiTables/Iort.aslc | 58 ++++++++++++++++++--
 1 file changed, 54 insertions(+), 4 deletions(-)

diff --git a/Platform/ARM/SgiPkg/AcpiTables/Iort.aslc b/Platform/ARM/SgiPkg/AcpiTables/Iort.aslc
index 58ec31ddc837..df9bd501158c 100644
--- a/Platform/ARM/SgiPkg/AcpiTables/Iort.aslc
+++ b/Platform/ARM/SgiPkg/AcpiTables/Iort.aslc
@@ -20,6 +20,12 @@ typedef struct
   UINT32                                   ItsIdentifiers;
 } ARM_EFI_ACPI_6_0_IO_REMAPPING_ITS_NODE;
 
+typedef struct
+{
+  EFI_ACPI_6_0_IO_REMAPPING_SMMU3_NODE     SmmuNode;
+  EFI_ACPI_6_0_IO_REMAPPING_ID_TABLE       SmmuIdMap[2];
+} ARM_EFI_ACPI_6_0_IO_REMAPPING_SMMU3_NODE;
+
 typedef struct
 {
   EFI_ACPI_6_0_IO_REMAPPING_RC_NODE        RcNode;
@@ -30,6 +36,7 @@ typedef struct
 {
   EFI_ACPI_6_0_IO_REMAPPING_TABLE          Header;
   ARM_EFI_ACPI_6_0_IO_REMAPPING_ITS_NODE   ItsNode;
+  ARM_EFI_ACPI_6_0_IO_REMAPPING_SMMU3_NODE SmmuNode;
   ARM_EFI_ACPI_6_0_IO_REMAPPING_RC_NODE    RcNode;
 } ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE;
 
@@ -45,7 +52,7 @@ ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE Iort =
        ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE,
        EFI_ACPI_IO_REMAPPING_TABLE_REVISION
      ),
-     2,  // NumNodes
+     3,  // NumNodes
      sizeof (EFI_ACPI_6_0_IO_REMAPPING_TABLE),  // NodeOffset
      0,  // Reserved
   },
@@ -62,9 +69,52 @@ ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE Iort =
         0,  // NumIdMappings
         0,  // IdReference
       },
-      1,    // GIC ITS Identifiers
+      1,    // ITS count
+    },
+    0,      // GIC ITS Identifiers
+  },
+  // SMMU
+  {
+    // EFI_ACPI_6_0_IO_REMAPPING_SMMU3_NODE
+    {
+      // EFI_ACPI_6_0_IO_REMAPPING_NODE
+      {
+        EFI_ACPI_IORT_TYPE_SMMUv3, // Type
+        sizeof (ARM_EFI_ACPI_6_0_IO_REMAPPING_SMMU3_NODE), // Length
+        2, // Revision
+        0, // Reserved
+        2, // NumIdMapping
+        __builtin_offsetof (ARM_EFI_ACPI_6_0_IO_REMAPPING_SMMU3_NODE, SmmuIdMap), // IdReference
+      },
+      0x4F000000, // Base address
+      EFI_ACPI_IORT_SMMUv3_FLAG_COHAC_OVERRIDE, // Flags
+      0,   // Reserved
+      0,   // VATOS address
+      EFI_ACPI_IORT_SMMUv3_MODEL_GENERIC, // SMMUv3 Model
+      260, // Event
+      0,   // Pri
+      262, // Gerror
+      261, // Sync
+      0,   // Proximity domain
+      1,   // DevIDMappingIndex
+    },
+    // EFI_ACPI_6_0_IO_REMAPPING_ID_TABLE
+    {
+      {
+        0x0000, // InputBase
+        0xffff, // NumIds
+        0x0000, // OutputBase
+        __builtin_offsetof (ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE, ItsNode), // OutputReference
+        0, // Flags
+      },
+      {
+        0x0,     // InputBase
+        0x1,     // NumIds
+        0x10000, // OutputBase
+        __builtin_offsetof (ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE, ItsNode), // OutputReference
+        EFI_ACPI_IORT_ID_MAPPING_FLAGS_SINGLE, // Flags
+      },
     },
-    0,
   },
   // ARM_EFI_ACPI_6_0_IO_REMAPPING_RC_NODE
   {
@@ -91,7 +141,7 @@ ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE Iort =
       0x0000,  // InputBase
       0xffff,  // NumIds
       0x0000,  // OutputBase
-      OFFSET_OF (ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE, ItsNode),  // OutputReference
+      OFFSET_OF (ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE, SmmuNode),  // OutputReference
       0,       // Flags
     }
   }
-- 
2.17.1