1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
55 	bool			 inactive;  member
147 	sc->vtrnd_dev = dev;  in vtrnd_attach()
150 	len = sizeof(*sc->vtrnd_value) * HARVESTSIZE;  in vtrnd_attach()
151 	sc->vtrnd_value = malloc_aligned(len, len, M_DEVBUF, M_WAITOK);  in vtrnd_attach()
152 	sc->vtrnd_sg = sglist_build(sc->vtrnd_value, len, M_WAITOK);  in vtrnd_attach()
173 	sc->eh = EVENTHANDLER_REGISTER(shutdown_post_sync,  in vtrnd_attach()
175 	if (sc->eh == NULL) {  in vtrnd_attach()
181 	sc->inactive = false;  in vtrnd_attach()
204 	sc->inactive = true;  in vtrnd_detach()
205 	if (sc->eh != NULL) {  in vtrnd_detach()
206 		EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->eh);  in vtrnd_detach()
207 		sc->eh = NULL;  in vtrnd_detach()
212 	virtqueue_poll(sc->vtrnd_vq, &rdlen);  in vtrnd_detach()
215 	sglist_free(sc->vtrnd_sg);  in vtrnd_detach()
216 	zfree(sc->vtrnd_value, M_DEVBUF);  in vtrnd_detach()
226 	sc->inactive = true;  in vtrnd_shutdown()
237 	dev = sc->vtrnd_dev;  in vtrnd_negotiate_features()
240 	sc->vtrnd_features = virtio_negotiate_features(dev, features);  in vtrnd_negotiate_features()
262 	dev = sc->vtrnd_dev;  in vtrnd_alloc_virtqueue()
264 	VQ_ALLOC_INFO_INIT(&vq_info, 0, NULL, sc, &sc->vtrnd_vq,  in vtrnd_alloc_virtqueue()
276 	vq = sc->vtrnd_vq;  in vtrnd_enqueue()
278 	KASSERT(virtqueue_empty(vq), ("%s: non-empty queue", __func__));  in vtrnd_enqueue()
280 	error = virtqueue_enqueue(vq, sc, sc->vtrnd_sg, 0, 1);  in vtrnd_enqueue()
294 	if (sc->inactive)  in vtrnd_harvest()
297 	vq = sc->vtrnd_vq;  in vtrnd_harvest()
305 	memcpy(buf, sc->vtrnd_value, *sz);  in vtrnd_harvest()