To allow VFIO use case, let's set the smmu model to
ACPI_IORT_SMMU_V3_CACHING_MODE.

An important notice is this model is not standardized in the
ACPI IORT as this work is a proof of concept.

We also set the COHACC override flag which seems to be mandated.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 hw/arm/virt-acpi-build.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index ac2cd3e..9103117 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -437,6 +437,7 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
 
         smmu->type = ACPI_IORT_NODE_SMMU_V3;
         smmu->length = cpu_to_le16(node_size);
+		smmu->model = 0x3; /* ACPI_IORT_SMMU_V3_CACHING_MODE */
         smmu->mapping_count = cpu_to_le32(1);
         smmu->mapping_offset = cpu_to_le32(sizeof(*smmu));
         smmu->base_address = cpu_to_le64(vms->memmap[VIRT_SMMU].base);
@@ -444,6 +445,7 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
         smmu->pri_gsiv = cpu_to_le32(irq + 1);
         smmu->gerr_gsiv = cpu_to_le32(irq + 2);
         smmu->sync_gsiv = cpu_to_le32(irq + 3);
+        smmu->flags = 0x1; /* COHACC Override */
 
         /* Identity RID mapping covering the whole input RID range */
         idmap = &smmu->id_mapping_array[0];
-- 
2.5.5