diff options
| author | Jason Wang <jasowang@redhat.com> | 2023-01-19 07:15:23 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-02-21 01:26:58 +0100 |
| commit | a1baedb11ed4008035cf72777a6cb572fc26184f (patch) | |
| tree | 6788876b28ba33805a14f11c681cf8c23e65b5d1 /drivers/virtio/virtio_vdpa.c | |
| parent | vdpa: introduce get_vq_dma_device() (diff) | |
| download | linux-a1baedb11ed4008035cf72777a6cb572fc26184f.tar.xz linux-a1baedb11ed4008035cf72777a6cb572fc26184f.zip | |
virtio-vdpa: support per vq dma device
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.
Reviewed-by: Eli Cohen <elic@nvidia.com>
Tested-by: Eli Cohen <elic@nvidia.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230119061525.75068-4-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/virtio/virtio_vdpa.c')
| -rw-r--r-- | drivers/virtio/virtio_vdpa.c | 13 |
1 files 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; |