[PATCH vhost v5 4/8] vdpa/mlx5: Mark vq addrs for modification in hw vq

[Dragos Tatulea]

Addresses get set by .set_vq_address. hw vq addresses will be updated on
next modify_virtqueue.

Reviewed-by: Gal Pressman <g...@nvidia.com>
Signed-off-by: Dragos Tatulea <dtatu...@nvidia.com>
---
 drivers/vdpa/mlx5/net/mlx5_vnet.c  | 9 +++++++++
 include/linux/mlx5/mlx5_ifc_vdpa.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c 
b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index f8f088cced50..80e066de0866 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -1209,6 +1209,7 @@ static int modify_virtqueue(struct mlx5_vdpa_net *ndev,
        bool state_change = false;
        void *obj_context;
        void *cmd_hdr;
+       void *vq_ctx;
        void *in;
        int err;
 
@@ -1230,6 +1231,7 @@ static int modify_virtqueue(struct mlx5_vdpa_net *ndev,
        MLX5_SET(general_obj_in_cmd_hdr, cmd_hdr, uid, ndev->mvdev.res.uid);
 
        obj_context = MLX5_ADDR_OF(modify_virtio_net_q_in, in, obj_context);
+       vq_ctx = MLX5_ADDR_OF(virtio_net_q_object, obj_context, 
virtio_q_context);
 
        if (mvq->modified_fields & MLX5_VIRTQ_MODIFY_MASK_STATE) {
                if (!is_valid_state_change(mvq->fw_state, state, 
is_resumable(ndev))) {
@@ -1241,6 +1243,12 @@ static int modify_virtqueue(struct mlx5_vdpa_net *ndev,
                state_change = true;
        }
 
+       if (mvq->modified_fields & MLX5_VIRTQ_MODIFY_MASK_VIRTIO_Q_ADDRS) {
+               MLX5_SET64(virtio_q, vq_ctx, desc_addr, mvq->desc_addr);
+               MLX5_SET64(virtio_q, vq_ctx, used_addr, mvq->device_addr);
+               MLX5_SET64(virtio_q, vq_ctx, available_addr, mvq->driver_addr);
+       }
+
        MLX5_SET64(virtio_net_q_object, obj_context, modify_field_select, 
mvq->modified_fields);
        err = mlx5_cmd_exec(ndev->mvdev.mdev, in, inlen, out, sizeof(out));
        if (err)
@@ -2202,6 +2210,7 @@ static int mlx5_vdpa_set_vq_address(struct vdpa_device 
*vdev, u16 idx, u64 desc_
        mvq->desc_addr = desc_area;
        mvq->device_addr = device_area;
        mvq->driver_addr = driver_area;
+       mvq->modified_fields |= MLX5_VIRTQ_MODIFY_MASK_VIRTIO_Q_ADDRS;
        return 0;
 }
 
diff --git a/include/linux/mlx5/mlx5_ifc_vdpa.h 
b/include/linux/mlx5/mlx5_ifc_vdpa.h
index b86d51a855f6..9594ac405740 100644
--- a/include/linux/mlx5/mlx5_ifc_vdpa.h
+++ b/include/linux/mlx5/mlx5_ifc_vdpa.h
@@ -145,6 +145,7 @@ enum {
        MLX5_VIRTQ_MODIFY_MASK_STATE                    = (u64)1 << 0,
        MLX5_VIRTQ_MODIFY_MASK_DIRTY_BITMAP_PARAMS      = (u64)1 << 3,
        MLX5_VIRTQ_MODIFY_MASK_DIRTY_BITMAP_DUMP_ENABLE = (u64)1 << 4,
+       MLX5_VIRTQ_MODIFY_MASK_VIRTIO_Q_ADDRS           = (u64)1 << 6,
        MLX5_VIRTQ_MODIFY_MASK_DESC_GROUP_MKEY          = (u64)1 << 14,
 };
 
-- 
2.43.0