virtio/console/virtio_console.c

112 	 * indexed by the port ID.
134         ("%s: port ID %d out of range", __func__, _id))
327 		device_printf(dev, "cannot allocate softc port structures\n");
504 			/* The control virtqueues are after the first port. */
517 		    scport, &scport->vcsp_invq, "%s-port%d in",
520 		    NULL, &scport->vcsp_outvq, "%s-port%d out",
550 	struct vtcon_port *port;
561 		port = scport->vcsp_port;
562 		if (port != NULL) {
564 			VTCON_PORT_LOCK(port);
566 			vtcon_port_teardown(port);
708 		device_printf(dev, "%s: adding port %d, but already exists\n",
715 		device_printf(dev, "%s: cannot create port %d: %d\n",
727 	struct vtcon_port *port;
733 	port = scport->vcsp_port;
734 	if (port == NULL) {
736 		device_printf(dev, "%s: remove port %d, but does not exist\n",
742 	VTCON_PORT_LOCK(port);
744 	vtcon_port_teardown(port);
752 	struct vtcon_port *port;
758 	port = scport->vcsp_port;
759 	if (port == NULL) {
761 		device_printf(dev, "%s: console port %d, but does not exist\n",
766 	VTCON_PORT_LOCK(port);
768 	port->vtcport_flags |= VTCON_PORT_FLAG_CONSOLE;
769 	vtcon_port_submit_event(port, VIRTIO_CONSOLE_PORT_OPEN, 1);
770 	VTCON_PORT_UNLOCK(port);
778 	struct vtcon_port *port;
784 	port = scport->vcsp_port;
785 	if (port == NULL) {
787 		device_printf(dev, "%s: open port %d, but does not exist\n",
792 	VTCON_PORT_LOCK(port);
794 	vtcon_port_enable_intr(port);
795 	VTCON_PORT_UNLOCK(port);
809 		device_printf(dev, "%s: invalid port ID %d\n", __func__, id);
906 	 * port lock held. Acquiring the softc would violate our lock
937 vtcon_port_enqueue_buf(struct vtcon_port *port, void *buf, size_t len)
944 	vq = port->vtcport_invq;
957 vtcon_port_create_buf(struct vtcon_port *port)
966 	error = vtcon_port_enqueue_buf(port, buf, VTCON_BULK_BUFSZ);
974 vtcon_port_requeue_buf(struct vtcon_port *port, void *buf)
978 	error = vtcon_port_enqueue_buf(port, buf, VTCON_BULK_BUFSZ);
984 vtcon_port_populate(struct vtcon_port *port)
989 	vq = port->vtcport_invq;
993 		error = vtcon_port_create_buf(port);
1007 vtcon_port_destroy(struct vtcon_port *port)
1010 	port->vtcport_sc = NULL;
1011 	port->vtcport_scport = NULL;
1012 	port->vtcport_invq = NULL;
1013 	port->vtcport_outvq = NULL;
1014 	port->vtcport_id = -1;
1015 	mtx_destroy(&port->vtcport_mtx);
1016 	free(port, M_DEVBUF);
1020 vtcon_port_init_vqs(struct vtcon_port *port)
1025 	scport = port->vtcport_scport;
1027 	port->vtcport_invq = scport->vcsp_invq;
1028 	port->vtcport_outvq = scport->vcsp_outvq;
1032 	 * prior port. We have not yet notified the host that the port is
1035 	vtcon_port_drain(port);
1037 	KASSERT(virtqueue_empty(port->vtcport_invq),
1039 	KASSERT(virtqueue_empty(port->vtcport_outvq),
1042 	error = vtcon_port_populate(port);
1054 	struct vtcon_port *port;
1063 	port = malloc(sizeof(struct vtcon_port), M_DEVBUF, M_NOWAIT | M_ZERO);
1064 	if (port == NULL)
1067 	port->vtcport_sc = sc;
1068 	port->vtcport_scport = scport;
1069 	port->vtcport_id = id;
1070 	mtx_init(&port->vtcport_mtx, "vtcpmtx", NULL, MTX_DEF);
1071 	port->vtcport_tty = tty_alloc_mutex(&vtcon_tty_class, port,
1072 	    &port->vtcport_mtx);
1074 	error = vtcon_port_init_vqs(port);
1076 		VTCON_PORT_LOCK(port);
1077 		vtcon_port_teardown(port);
1082 	VTCON_PORT_LOCK(port);
1083 	scport->vcsp_port = port;
1084 	vtcon_port_enable_intr(port);
1085 	vtcon_port_submit_event(port, VIRTIO_CONSOLE_PORT_READY, 1);
1086 	VTCON_PORT_UNLOCK(port);
1089 	tty_makedev(port->vtcport_tty, NULL, "%s%r.%r", VTCON_TTY_PREFIX,
1108 vtcon_port_drain(struct vtcon_port *port)
1111 	vtcon_port_drain_bufs(port->vtcport_invq);
1115 vtcon_port_teardown(struct vtcon_port *port)
1119 	tp = port->vtcport_tty;
1121 	port->vtcport_flags |= VTCON_PORT_FLAG_GONE;
1127 		vtcon_port_destroy(port);
1131 vtcon_port_change_size(struct vtcon_port *port, uint16_t cols, uint16_t rows)
1136 	tp = port->vtcport_tty;
1151 	struct vtcon_port *port;
1158 	 * For now, assume the first (only) port is the console. Note
1164 	port = scport->vcsp_port;
1166 	if (port != NULL) {
1167 		VTCON_PORT_LOCK(port);
1169 		vtcon_port_change_size(port, cols, rows);
1170 		VTCON_PORT_UNLOCK(port);
1176 vtcon_port_enable_intr(struct vtcon_port *port)
1183 	virtqueue_enable_intr(port->vtcport_invq);
1187 vtcon_port_disable_intr(struct vtcon_port *port)
1190 	if (port->vtcport_invq != NULL)
1191 		virtqueue_disable_intr(port->vtcport_invq);
1192 	if (port->vtcport_outvq != NULL)
1193 		virtqueue_disable_intr(port->vtcport_outvq);
1197 vtcon_port_in(struct vtcon_port *port)
1205 	tp = port->vtcport_tty;
1206 	vq = port->vtcport_invq;
1214 			if (port->vtcport_flags & VTCON_PORT_FLAG_CONSOLE)
1216 				    &port->vtcport_alt_break_state);
1220 		vtcon_port_requeue_buf(port, buf);
1237 	struct vtcon_port *port;
1243 	port = scport->vcsp_port;
1244 	if (port == NULL) {
1248 	VTCON_PORT_LOCK(port);
1250 	if ((port->vtcport_flags & VTCON_PORT_FLAG_GONE) == 0)
1251 		vtcon_port_in(port);
1252 	VTCON_PORT_UNLOCK(port);
1256 vtcon_port_out(struct vtcon_port *port, void *buf, int bufsize)
1263 	vq = port->vtcport_outvq;
1265 	    ("%s: port %p out virtqueue not emtpy", __func__, port));
1280 vtcon_port_submit_event(struct vtcon_port *port, uint16_t event,
1285 	sc = port->vtcport_sc;
1287 	vtcon_ctrl_send_control(sc, port->vtcport_id, event, value);
1293 	struct vtcon_port *port;
1295 	port = tty_softc(tp);
1297 	if (port->vtcport_flags & VTCON_PORT_FLAG_GONE)
1300 	vtcon_port_submit_event(port, VIRTIO_CONSOLE_PORT_OPEN, 1);
1308 	struct vtcon_port *port;
1310 	port = tty_softc(tp);
1312 	if (port->vtcport_flags & VTCON_PORT_FLAG_GONE)
1315 	vtcon_port_submit_event(port, VIRTIO_CONSOLE_PORT_OPEN, 0);
1321 	struct vtcon_port *port;
1325 	port = tty_softc(tp);
1327 	if (port->vtcport_flags & VTCON_PORT_FLAG_GONE)
1331 		vtcon_port_out(port, buf, len);
1337 	struct vtcon_port *port;
1339 	port = xport;
1341 	vtcon_port_destroy(port);
1363 	struct vtcon_port *port;
1374 		port = scport->vcsp_port;
1375 		if (port == NULL)
1378 		VTCON_PORT_LOCK(port);
1379 		vtcon_port_enable_intr(port);
1380 		VTCON_PORT_UNLOCK(port);
1390 	struct vtcon_port *port;
1401 		port = scport->vcsp_port;
1402 		if (port == NULL)
1405 		VTCON_PORT_LOCK(port);
1406 		vtcon_port_disable_intr(port);
1407 		VTCON_PORT_UNLOCK(port);