Commit 51b6e6c1 authored by Alvaro Karsz's avatar Alvaro Karsz Committed by Michael S. Tsirkin
Browse files

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: default avatarAlvaro Karsz <alvaro.karsz@solid-run.com>
Message-Id: <20230417083853.375076-1-alvaro.karsz@solid-run.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 2c4e4a22

drivers/vdpa/solidrun/snet_main.c

+13 −0
Original line number Diff line number Diff line
@@ -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,