This patch adds the support of per vq dma device for virito-vDPA. vDPA
parents then are allowed to use different DMA devices. This is useful
for the parents that have software or emulated virtqueues.
Signed-off-by: Jason Wang <jasow...@redhat.com>
---
drivers/virtio/virtio_vdpa.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
index 9670cc79371d..d7f5af62ddaa 100644
--- a/drivers/virtio/virtio_vdpa.c
+++ b/drivers/virtio/virtio_vdpa.c
@@ -135,6 +135,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned
int index,
{
struct virtio_vdpa_device *vd_dev = to_virtio_vdpa_device(vdev);
struct vdpa_device *vdpa = vd_get_vdpa(vdev);
+ struct device *dma_dev;
const struct vdpa_config_ops *ops = vdpa->config;
struct virtio_vdpa_vq_info *info;
struct vdpa_callback cb;
@@ -175,9 +176,15 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned
int index,
/* Create the vring */
align = ops->get_vq_align(vdpa);
- vq = vring_create_virtqueue(index, max_num, align, vdev,
- true, may_reduce_num, ctx,
- virtio_vdpa_notify, callback, name);
+
+ if (ops->get_vq_dma_dev)
+ dma_dev = ops->get_vq_dma_dev(vdpa, index);
+ else
+ dma_dev = vdpa_get_dma_dev(vdpa);
+ vq = vring_create_virtqueue_dma(index, max_num, align, vdev,
+ true, may_reduce_num, ctx,
+ virtio_vdpa_notify, callback,
+ name, dma_dev);
if (!vq) {
err = -ENOMEM;
goto error_new_virtqueue;
--
2.25.1
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