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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@redhat.com>
Signed-off-by: Gautam Dawar <gdawar@xilinx.com>
Message-Id: <20220330180436.24644-8-gdawar@xilinx.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gautam Dawar 2022-03-30 23:33:47 +05:30 committed by Michael S. Tsirkin
parent db9adcbf42
commit 46d554b1bc
1 changed files with 8 additions and 0 deletions
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8
include/linux/vdpa.h
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@ -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)
@ -325,6 +331,8 @@ 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);