This patch introduce a new method for the virtio-bus for the transport
to report whether or not the IOMMU is enabled for the device.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <
20210804034803.1644-2-jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
return NULL;
}
+bool virtio_bus_device_iommu_enabled(VirtIODevice *vdev)
+{
+ DeviceState *qdev = DEVICE(vdev);
+ BusState *qbus = BUS(qdev_get_parent_bus(qdev));
+ VirtioBusState *bus = VIRTIO_BUS(qbus);
+ VirtioBusClass *klass = VIRTIO_BUS_GET_CLASS(bus);
+
+ if (!klass->iommu_enabled) {
+ return false;
+ }
+
+ return klass->iommu_enabled(qbus->parent);
+}
+
static void virtio_bus_class_init(ObjectClass *klass, void *data)
{
BusClass *bus_class = BUS_CLASS(klass);
*/
bool has_variable_vring_alignment;
AddressSpace *(*get_dma_as)(DeviceState *d);
+ bool (*iommu_enabled)(DeviceState *d);
};
struct VirtioBusState {
int virtio_bus_set_host_notifier(VirtioBusState *bus, int n, bool assign);
/* Tell the bus that the ioeventfd handler is no longer required. */
void virtio_bus_cleanup_host_notifier(VirtioBusState *bus, int n);
-
+/* Whether the IOMMU is enabled for this device */
+bool virtio_bus_device_iommu_enabled(VirtIODevice *vdev);
#endif /* VIRTIO_BUS_H */