diff options
| author | Jason Wang <jasowang@redhat.com> | 2021-08-04 11:48:01 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-09-04 16:35:17 -0400 |
| commit | dd014b4f4967e85c021033193d70d7526b7214cb (patch) | |
| tree | 24ae9ae9ed3a19b9d8faded83ae02b598029eb50 | |
| parent | 2d050ed07c97a88202dac3eef64263e1f2556bfe (diff) | |
virtio-bus: introduce iommu_enabled()
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>
| -rw-r--r-- | hw/virtio/virtio-bus.c | 14 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-bus.h | 4 |
2 files changed, 17 insertions, 1 deletions
diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c index 859978d248..d23db98c56 100644 --- a/hw/virtio/virtio-bus.c +++ b/hw/virtio/virtio-bus.c @@ -325,6 +325,20 @@ static char *virtio_bus_get_fw_dev_path(DeviceState *dev) 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); diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h index ef8abe49c5..7ab8c9dab0 100644 --- a/include/hw/virtio/virtio-bus.h +++ b/include/hw/virtio/virtio-bus.h @@ -93,6 +93,7 @@ struct VirtioBusClass { */ bool has_variable_vring_alignment; AddressSpace *(*get_dma_as)(DeviceState *d); + bool (*iommu_enabled)(DeviceState *d); }; struct VirtioBusState { @@ -154,5 +155,6 @@ void virtio_bus_release_ioeventfd(VirtioBusState *bus); 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 */ |