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authorAlvaro Karsz <alvaro.karsz@solid-run.com>2023-04-17 11:38:53 +0300
committerMichael S. Tsirkin <mst@redhat.com>2023-04-21 03:02:35 -0400
commit51b6e6c1c8e382c50fe88a04e25d326ceff74f89 (patch)
tree82eff9d424fb529413bc56589d736c4e76144ae6 /drivers/vdpa
parent2c4e4a22a3b090e06191f8544d21e0e1d72ce518 (diff)
vdpa/snet: implement kick_vq_with_data callback
Implement the kick_vq_with_data vDPA callback. On kick, we pass the next available data to the DPU by writing it in the kick offset. Signed-off-by: Alvaro Karsz <alvaro.karsz@solid-run.com> Message-Id: <20230417083853.375076-1-alvaro.karsz@solid-run.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa')
-rw-r--r--drivers/vdpa/solidrun/snet_main.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/vdpa/solidrun/snet_main.c b/drivers/vdpa/solidrun/snet_main.c
index 7359599e09e4..da14d437af33 100644
--- a/drivers/vdpa/solidrun/snet_main.c
+++ b/drivers/vdpa/solidrun/snet_main.c
@@ -112,6 +112,18 @@ static void snet_kick_vq(struct vdpa_device *vdev, u16 idx)
iowrite32(SNET_KICK_VAL, snet->vqs[idx]->kick_ptr);
}
+static void snet_kick_vq_with_data(struct vdpa_device *vdev, u32 data)
+{
+ struct snet *snet = vdpa_to_snet(vdev);
+ u16 idx = data & 0xFFFF;
+
+ /* not ready - ignore */
+ if (unlikely(!snet->vqs[idx]->ready))
+ return;
+
+ iowrite32((data & 0xFFFF0000) | SNET_KICK_VAL, snet->vqs[idx]->kick_ptr);
+}
+
static void snet_set_vq_cb(struct vdpa_device *vdev, u16 idx, struct vdpa_callback *cb)
{
struct snet *snet = vdpa_to_snet(vdev);
@@ -501,6 +513,7 @@ static const struct vdpa_config_ops snet_config_ops = {
.set_vq_address = snet_set_vq_address,
.set_vq_num = snet_set_vq_num,
.kick_vq = snet_kick_vq,
+ .kick_vq_with_data = snet_kick_vq_with_data,
.set_vq_cb = snet_set_vq_cb,
.set_vq_ready = snet_set_vq_ready,
.get_vq_ready = snet_get_vq_ready,