Function virtio_submit_chain

components/drivers/virtio/virtio.c:183–200

}

void virtio_submit_chain(struct virtio_device *dev, rt_uint32_t queue_index, rt_uint16_t desc_index)
{
    rt_size_t ring_size;
    struct virtq *queue;

    _virtio_dev_check(dev);

    queue = &dev->queues[queue_index];
    ring_size = queue->num;

    /* Tell the device the first index in our chain of descriptors */
    queue->avail->ring[queue->avail->idx % ring_size] = desc_index;
    rt_hw_dsb();

    /* Tell the device another avail ring entry is available */
    queue->avail->idx++;
    rt_hw_dsb();
}

rt_uint16_t virtio_alloc_desc(struct virtio_device *dev, rt_uint32_t queue_index)
{