Although this change does not affect functionality at present, it is
required when we add support for user-creatable SMMUv3 devices in
future patches.
Signed-off-by: Shameer Kolothum <shameerali.kolothum.th...@huawei.com>
---
hw/arm/smmuv3.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
index ab67972353..7e934336c2 100644
--- a/hw/arm/smmuv3.c
+++ b/hw/arm/smmuv3.c
@@ -24,6 +24,7 @@
#include "hw/qdev-properties.h"
#include "hw/qdev-core.h"
#include "hw/pci/pci.h"
+#include "hw/pci/pci_bridge.h"
#include "cpu.h"
#include "exec/target_page.h"
#include "trace.h"
@@ -1881,6 +1882,13 @@ static void smmu_realize(DeviceState *d, Error **errp)
SMMUv3Class *c = ARM_SMMUV3_GET_CLASS(s);
SysBusDevice *dev = SYS_BUS_DEVICE(d);
Error *local_err = NULL;
+ Object *bus;
+
+ bus = object_property_get_link(OBJECT(d), "primary-bus", &error_abort);
+ if (!bus || !object_dynamic_cast(bus->parent, TYPE_PCI_HOST_BRIDGE)) {
+ error_setg(errp, "SMMUv3 is not attached to any PCIe Root Complex!");
+ return;
+ }
c->parent_realize(d, &local_err);
if (local_err) {
--
2.34.1
