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.ka...@solid-run.com> --- Should be applied on top of: https://lore.kernel.org/virtualization/20230413081855.36643-1-alvaro.ka...@solid-run.com/ drivers/vdpa/solidrun/snet_main.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/vdpa/solidrun/snet_main.c b/drivers/vdpa/solidrun/snet_main.c index 20dbb2b82c8..99428a04068 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); @@ -515,6 +527,7 @@ 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, -- 2.34.1 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
