diff options
| author | Jason Wang <jasowang@redhat.com> | 2025-08-21 14:46:36 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-10-01 07:24:43 -0400 |
| commit | b16060c5c7d56455da3c3c50b4a20a83c2a30810 (patch) | |
| tree | 26ccf12be6288a3df6925c0109f5387efb99a7eb /include/linux/virtio.h | |
| parent | b41cb3bcf67fcb7b8297e5acc5bb3309c96c2ff2 (diff) | |
virtio: introduce virtio_map container union
Following patch will introduce the mapping operations for virtio
device. In order to achieve this, besides the dma device, virtio core
needs to support a transport or device specific mapping metadata as well.
So this patch introduces a union container of a dma device. The idea
is the allow the transport layer to pass device specific mapping
metadata which will be used as a parameter for the virtio mapping
operations. For the transport or device that is using DMA, dma device
is still being used.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20250821064641.5025-5-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Diffstat (limited to 'include/linux/virtio.h')
| -rw-r--r-- | include/linux/virtio.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 576e08bd7697..b4ba1a99e5ab 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -41,6 +41,11 @@ struct virtqueue { void *priv; }; +union virtio_map { + /* Device that performs DMA */ + struct device *dma_dev; +}; + int virtqueue_add_outbuf(struct virtqueue *vq, struct scatterlist sg[], unsigned int num, void *data, |