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Date: Thu, 24 Sep 2020 11:21:11 +0800 From: Jason Wang <jasowang@...hat.com> To: mst@...hat.com, jasowang@...hat.com Cc: lulu@...hat.com, kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, rob.miller@...adcom.com, lingshan.zhu@...el.com, eperezma@...hat.com, hanand@...inx.com, mhabets@...arflare.com, eli@...lanox.com, amorenoz@...hat.com, maxime.coquelin@...hat.com, stefanha@...hat.com, sgarzare@...hat.com Subject: [RFC PATCH 10/24] vdpa: introduce config operations for associating ASID to a virtqueue group 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@...hat.com> --- include/linux/vdpa.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 1e1163daa352..e2394995a3cd 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -160,6 +160,12 @@ struct vdpa_device { * @get_generation: Get device config generation (optional) * @vdev: vdpa device * Returns u32: device generation + * @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) @@ -237,6 +243,10 @@ 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); -- 2.20.1
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