Re: [RFC v4 04/11] vdpa: Add an opaque pointer for vdpa_config_ops.dma_map()

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On 2021/2/23 7:50 下午, Xie Yongji wrote:
Add an opaque pointer for DMA mapping.

Suggested-by: Jason Wang <jasowang@xxxxxxxxxx>
Signed-off-by: Xie Yongji <xieyongji@xxxxxxxxxxxxx>


Acked-by: Jason Wang <jasowang@xxxxxxxxxx>


---
  drivers/vdpa/vdpa_sim/vdpa_sim.c | 6 +++---
  drivers/vhost/vdpa.c             | 2 +-
  include/linux/vdpa.h             | 2 +-
  3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index d5942842432d..5cfc262ce055 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -512,14 +512,14 @@ static int vdpasim_set_map(struct vdpa_device *vdpa,
  }
static int vdpasim_dma_map(struct vdpa_device *vdpa, u64 iova, u64 size,
-			   u64 pa, u32 perm)
+			   u64 pa, u32 perm, void *opaque)
  {
  	struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
  	int ret;
spin_lock(&vdpasim->iommu_lock);
-	ret = vhost_iotlb_add_range(vdpasim->iommu, iova, iova + size - 1, pa,
-				    perm);
+	ret = vhost_iotlb_add_range_ctx(vdpasim->iommu, iova, iova + size - 1,
+					pa, perm, opaque);
  	spin_unlock(&vdpasim->iommu_lock);
return ret;
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
index 5500e3bf05c1..70857fe3263c 100644
--- a/drivers/vhost/vdpa.c
+++ b/drivers/vhost/vdpa.c
@@ -544,7 +544,7 @@ static int vhost_vdpa_map(struct vhost_vdpa *v,
  		return r;
if (ops->dma_map) {
-		r = ops->dma_map(vdpa, iova, size, pa, perm);
+		r = ops->dma_map(vdpa, iova, size, pa, perm, NULL);
  	} else if (ops->set_map) {
  		if (!v->in_batch)
  			r = ops->set_map(vdpa, dev->iotlb);
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 4ab5494503a8..93dca2c328ae 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -241,7 +241,7 @@ struct vdpa_config_ops {
  	/* DMA ops */
  	int (*set_map)(struct vdpa_device *vdev, struct vhost_iotlb *iotlb);
  	int (*dma_map)(struct vdpa_device *vdev, u64 iova, u64 size,
-		       u64 pa, u32 perm);
+		       u64 pa, u32 perm, void *opaque);
  	int (*dma_unmap)(struct vdpa_device *vdev, u64 iova, u64 size);
/* Free device resources */




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