[Qemu-devel] [PATCH v9 05/25] acpi: enable INTR for DMAR report structure

[Peter Xu <peterx@redhat.com>]

In ACPI DMA remapping report structure, enable INTR flag when specified.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 hw/i386/acpi-build.c          | 11 ++++++++++-
 include/hw/i386/intel_iommu.h |  2 ++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 161f089..961ccd6a 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -57,6 +57,7 @@
 
 #include "qapi/qmp/qint.h"
 #include "qom/qom-qobject.h"
+#include "hw/i386/x86-iommu.h"
 
 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and
  * -M pc-i440fx-2.0.  Even if the actual amount of AML generated grows
@@ -2422,10 +2423,18 @@ build_dmar_q35(GArray *table_data, BIOSLinker *linker)
 
     AcpiTableDmar *dmar;
     AcpiDmarHardwareUnit *drhd;
+    uint8_t dmar_flags = 0;
+    X86IOMMUState *iommu = x86_iommu_get_default();
+
+    assert(iommu);
+    if (iommu->intr_supported) {
+        /* enable INTR for the IOMMU device */
+        dmar_flags |= DMAR_REPORT_F_INTR;
+    }
 
     dmar = acpi_data_push(table_data, sizeof(*dmar));
     dmar->host_address_width = VTD_HOST_ADDRESS_WIDTH - 1;
-    dmar->flags = 0;    /* No intr_remap for now */
+    dmar->flags = dmar_flags;
 
     /* DMAR Remapping Hardware Unit Definition structure */
     drhd = acpi_data_push(table_data, sizeof(*drhd));
diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h
index e36b896..638d77f 100644
--- a/include/hw/i386/intel_iommu.h
+++ b/include/hw/i386/intel_iommu.h
@@ -44,6 +44,8 @@
 #define VTD_HOST_ADDRESS_WIDTH      39
 #define VTD_HAW_MASK                ((1ULL << VTD_HOST_ADDRESS_WIDTH) - 1)
 
+#define DMAR_REPORT_F_INTR          (1)
+
 typedef struct VTDContextEntry VTDContextEntry;
 typedef struct VTDContextCacheEntry VTDContextCacheEntry;
 typedef struct IntelIOMMUState IntelIOMMUState;
-- 
2.4.11