vdpa/vp_vdpa: implement kick_vq_with_data callback

Implement the kick_vq_with_data vDPA callback.
On kick, we pass the next available data to the hardware by writing it in
the kick offset.

Signed-off-by: Yuxue Liu <yuxue.liu@jaguarmicro.com>
Message-Id: <20241203023743.1757-1-yuxue.liu@jaguarmicro.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>

diff --git a/drivers/vdpa/virtio_pci/vp_vdpa.c b/drivers/vdpa/virtio_pci/vp_vdpa.c
index 16380764275ea019bc1a741e16f61d424077cccc..8787407f75b067c2783324fb457bb36bc1fb31dc 100644 (file)
--- a/drivers/vdpa/virtio_pci/vp_vdpa.c
+++ b/drivers/vdpa/virtio_pci/vp_vdpa.c
@@ -367,6 +367,14 @@ static void vp_vdpa_kick_vq(struct vdpa_device *vdpa, u16 qid)
        vp_iowrite16(qid, vp_vdpa->vring[qid].notify);
 }
 
+static void vp_vdpa_kick_vq_with_data(struct vdpa_device *vdpa, u32 data)
+{
+       struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa);
+       u16 qid = data & 0xFFFF;
+
+       vp_iowrite32(data, vp_vdpa->vring[qid].notify);
+}
+
 static u32 vp_vdpa_get_generation(struct vdpa_device *vdpa)
 {
        struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
@@ -472,6 +480,7 @@ static const struct vdpa_config_ops vp_vdpa_ops = {
        .get_vq_size    = vp_vdpa_get_vq_size,
        .set_vq_address = vp_vdpa_set_vq_address,
        .kick_vq        = vp_vdpa_kick_vq,
+       .kick_vq_with_data      = vp_vdpa_kick_vq_with_data,
        .get_generation = vp_vdpa_get_generation,
        .get_device_id  = vp_vdpa_get_device_id,
        .get_vendor_id  = vp_vdpa_get_vendor_id,