[PATCH 08/21] vdpa: introduce config operations for associating ASID to a virtqueue group
From: Jason Wang <jasowang@redhat.com>
Date: 2020-12-16 06:51:12
Also in:
kvm, lkml, virtualization
Subsystem:
the rest, virtio core · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
This patch introduces a new bus operation to allow the vDPA bus driver to associate an ASID to a virtqueue group. Signed-off-by: Jason Wang <jasowang@redhat.com> --- include/linux/vdpa.h | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 0a9a754f8180..2a8671f27b0b 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h@@ -174,6 +174,12 @@ struct vdpa_iova_range { * @vdev: vdpa device * Returns the iova range supported by * the device. + * @set_group_asid: Set address space identifier for a + * virtqueue group + * @vdev: vdpa device + * @group: virtqueue group + * @asid: address space id for this group + * Returns integer: success (0) or error (< 0) * @set_map: Set device memory mapping (optional) * Needed for device that using device * specific DMA translation (on-chip IOMMU)
@@ -252,6 +258,10 @@ struct vdpa_config_ops { u64 iova, u64 size, u64 pa, u32 perm); int (*dma_unmap)(struct vdpa_device *vdev, unsigned int asid, u64 iova, u64 size); + int (*set_group_asid)(struct vdpa_device *vdev, unsigned int group, + unsigned int asid); + + /* Free device resources */ void (*free)(struct vdpa_device *vdev);
--
2.25.1