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virtio: introduce virtio_queue_reset()

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Introduce a new interface function virtio_queue_reset() to implement
reset for vq.

Add a new callback to VirtioDeviceClass for queue reset operation for
each child device.

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221017092558.111082-3-xuanzhuo@linux.alibaba.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Xuan Zhuo 2022-10-17 17:25:45 +08:00 • committed by Michael S. Tsirkin
parent 3b43302c71
commit b3a8d6f431
2 changed files with 13 additions and 0 deletions
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11
hw/virtio/virtio.c
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@ -2484,6 +2484,17 @@ static void __virtio_queue_reset(VirtIODevice *vdev, uint32_t i)
virtio_virtqueue_reset_region_cache(&vdev->vq[i]);
}
void virtio_queue_reset(VirtIODevice *vdev, uint32_t queue_index)
{
VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
if (k->queue_reset) {
k->queue_reset(vdev, queue_index);
}
__virtio_queue_reset(vdev, queue_index);
}
void virtio_reset(void *opaque)
{
VirtIODevice *vdev = opaque;