From 46d554b1bcd19133401d2d5c0728b85e7bfd1358 Mon Sep 17 00:00:00 2001
From: Gautam Dawar <gautam.dawar@xilinx.com>
Date: Wed, 30 Mar 2022 23:33:47 +0530
Subject: [PATCH] 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>
---
include/linux/vdpa.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 1515748e84ff2..f336d253db3d9 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)
@@ -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);
--
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