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Date: Wed, 30 Mar 2022 23:33:47 +0530 From: Gautam Dawar <gautam.dawar@...inx.com> To: "Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>, <kvm@...r.kernel.org>, <virtualization@...ts.linux-foundation.org>, <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org> CC: <martinh@...inx.com>, <hanand@...inx.com>, <martinpo@...inx.com>, <pabloc@...inx.com>, <dinang@...inx.com>, <tanuj.kamde@....com>, <habetsm.xilinx@...il.com>, <ecree.xilinx@...il.com>, <eperezma@...hat.com>, Gautam Dawar <gdawar@...inx.com>, Wu Zongyong <wuzongyong@...ux.alibaba.com>, Christophe JAILLET <christophe.jaillet@...adoo.fr>, Eli Cohen <elic@...dia.com>, Zhu Lingshan <lingshan.zhu@...el.com>, Stefano Garzarella <sgarzare@...hat.com>, Xie Yongji <xieyongji@...edance.com>, Si-Wei Liu <si-wei.liu@...cle.com>, Parav Pandit <parav@...dia.com>, Longpeng <longpeng2@...wei.com>, Dan Carpenter <dan.carpenter@...cle.com>, Zhang Min <zhang.min9@....com.cn> Subject: [PATCH v2 07/19] 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> Signed-off-by: Gautam Dawar <gdawar@...inx.com> --- include/linux/vdpa.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 7ab0e29ae466..f4d8c916e0d8 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -240,6 +240,12 @@ struct vdpa_map_file { * @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) @@ -322,6 +328,8 @@ struct vdpa_config_ops { u64 iova, u64 size, u64 pa, u32 perm, void *opaque); 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); -- 2.30.1
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