177 	struct ports_device *portdev;  member
261 static struct port *find_port_by_devt_in_portdev(struct ports_device *portdev,  in find_port_by_devt_in_portdev()  argument
267 	spin_lock_irqsave(&portdev->ports_lock, flags);  in find_port_by_devt_in_portdev()
268 	list_for_each_entry(port, &portdev->ports, list) {  in find_port_by_devt_in_portdev()
276 	spin_unlock_irqrestore(&portdev->ports_lock, flags);  in find_port_by_devt_in_portdev()
283 	struct ports_device *portdev;  in find_port_by_devt()  local
288 	list_for_each_entry(portdev, &pdrvdata.portdevs, list) {  in find_port_by_devt()
289 		port = find_port_by_devt_in_portdev(portdev, dev);  in find_port_by_devt()
299 static struct port *find_port_by_id(struct ports_device *portdev, u32 id)  in find_port_by_id()  argument
304 	spin_lock_irqsave(&portdev->ports_lock, flags);  in find_port_by_id()
305 	list_for_each_entry(port, &portdev->ports, list)  in find_port_by_id()
310 	spin_unlock_irqrestore(&portdev->ports_lock, flags);  in find_port_by_id()
315 static struct port *find_port_by_vq(struct ports_device *portdev,  in find_port_by_vq()  argument
321 	spin_lock_irqsave(&portdev->ports_lock, flags);  in find_port_by_vq()
322 	list_for_each_entry(port, &portdev->ports, list)  in find_port_by_vq()
327 	spin_unlock_irqrestore(&portdev->ports_lock, flags);  in find_port_by_vq()
343 static inline bool use_multiport(struct ports_device *portdev)  in use_multiport()  argument
349 	if (!portdev->vdev)  in use_multiport()
351 	return __virtio_test_bit(portdev->vdev, VIRTIO_CONSOLE_F_MULTIPORT);  in use_multiport()
511 	if (!port->portdev) {  in discard_port_data()
547 static ssize_t __send_control_msg(struct ports_device *portdev, u32 port_id,  in __send_control_msg()  argument
554 	if (!use_multiport(portdev))  in __send_control_msg()
557 	vq = portdev->c_ovq;  in __send_control_msg()
559 	spin_lock(&portdev->c_ovq_lock);  in __send_control_msg()
561 	portdev->cpkt.id = cpu_to_virtio32(portdev->vdev, port_id);  in __send_control_msg()
562 	portdev->cpkt.event = cpu_to_virtio16(portdev->vdev, event);  in __send_control_msg()
563 	portdev->cpkt.value = cpu_to_virtio16(portdev->vdev, value);  in __send_control_msg()
565 	sg_init_one(sg, &portdev->cpkt, sizeof(struct virtio_console_control));  in __send_control_msg()
567 	if (virtqueue_add_outbuf(vq, sg, 1, &portdev->cpkt, GFP_ATOMIC) == 0) {  in __send_control_msg()
574 	spin_unlock(&portdev->c_ovq_lock);  in __send_control_msg()
582 	if (port->portdev)  in send_control_msg()
583 		return __send_control_msg(port->portdev, port->id, event, value);  in send_control_msg()
594 	if (!port->portdev) {  in reclaim_consumed_buffers()
827 	buf = alloc_buf(port->portdev->vdev, count, 0);  in port_fops_write()
946 	buf = alloc_buf(port->portdev->vdev, 0, pipe->nrbufs);  in port_fops_splice_write()
1175 	vdev = port->portdev->vdev;  in resize_console()
1360 static int add_port(struct ports_device *portdev, u32 id)  in add_port()  argument
1374 	port->portdev = portdev;  in add_port()
1390 	port->in_vq = portdev->in_vqs[port->id];  in add_port()
1391 	port->out_vq = portdev->out_vqs[port->id];  in add_port()
1395 		dev_err(&port->portdev->vdev->dev, "Error allocating cdev\n");  in add_port()
1401 	devt = MKDEV(portdev->chr_major, id);  in add_port()
1404 		dev_err(&port->portdev->vdev->dev,  in add_port()
1408 	port->dev = device_create(pdrvdata.class, &port->portdev->vdev->dev,  in add_port()
1410 				  port->portdev->vdev->index, id);  in add_port()
1413 		dev_err(&port->portdev->vdev->dev,  in add_port()
1433 	if (is_rproc_serial(port->portdev->vdev))  in add_port()
1440 	else if (!use_multiport(port->portdev)) {  in add_port()
1450 	spin_lock_irq(&portdev->ports_lock);  in add_port()
1451 	list_add_tail(&port->list, &port->portdev->ports);  in add_port()
1452 	spin_unlock_irq(&portdev->ports_lock);  in add_port()
1467 			 port->portdev->vdev->index, id);  in add_port()
1484 	__send_control_msg(portdev, id, VIRTIO_CONSOLE_PORT_READY, 0);  in add_port()
1517 	spin_lock_irq(&port->portdev->ports_lock);  in unplug_port()
1519 	spin_unlock_irq(&port->portdev->ports_lock);  in unplug_port()
1548 	port->portdev = NULL;  in unplug_port()
1567 				   struct ports_device *portdev,  in handle_control_message()  argument
1577 	port = find_port_by_id(portdev, virtio32_to_cpu(vdev, cpkt->id));  in handle_control_message()
1581 		dev_dbg(&portdev->vdev->dev,  in handle_control_message()
1589 			dev_dbg(&portdev->vdev->dev,  in handle_control_message()
1595 		    portdev->max_nr_ports) {  in handle_control_message()
1596 			dev_warn(&portdev->vdev->dev,  in handle_control_message()
1599 				cpkt->id, portdev->max_nr_ports - 1);  in handle_control_message()
1602 		add_port(portdev, virtio32_to_cpu(vdev, cpkt->id));  in handle_control_message()
1705 	struct ports_device *portdev;  in control_work_handler()  local
1710 	portdev = container_of(work, struct ports_device, control_work);  in control_work_handler()
1711 	vq = portdev->c_ivq;  in control_work_handler()
1713 	spin_lock(&portdev->c_ivq_lock);  in control_work_handler()
1715 		spin_unlock(&portdev->c_ivq_lock);  in control_work_handler()
1720 		handle_control_message(vq->vdev, portdev, buf);  in control_work_handler()
1722 		spin_lock(&portdev->c_ivq_lock);  in control_work_handler()
1723 		if (add_inbuf(portdev->c_ivq, buf) < 0) {  in control_work_handler()
1724 			dev_warn(&portdev->vdev->dev,  in control_work_handler()
1729 	spin_unlock(&portdev->c_ivq_lock);  in control_work_handler()
1785 	if (!port->guest_connected && !is_rproc_serial(port->portdev->vdev))  in in_intr()
1801 	struct ports_device *portdev;  in control_intr()  local
1803 	portdev = vq->vdev->priv;  in control_intr()
1804 	schedule_work(&portdev->control_work);  in control_intr()
1809 	struct ports_device *portdev;  in config_intr()  local
1811 	portdev = vdev->priv;  in config_intr()
1813 	if (!use_multiport(portdev))  in config_intr()
1814 		schedule_work(&portdev->config_work);  in config_intr()
1819 	struct ports_device *portdev;  in config_work_handler()  local
1821 	portdev = container_of(work, struct ports_device, config_work);  in config_work_handler()
1822 	if (!use_multiport(portdev)) {  in config_work_handler()
1827 		vdev = portdev->vdev;  in config_work_handler()
1831 		port = find_port_by_id(portdev, 0);  in config_work_handler()
1845 static int init_vqs(struct ports_device *portdev)  in init_vqs()  argument
1853 	nr_ports = portdev->max_nr_ports;  in init_vqs()
1854 	nr_queues = use_multiport(portdev) ? (nr_ports + 1) * 2 : 2;  in init_vqs()
1860 	portdev->in_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *),  in init_vqs()
1862 	portdev->out_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *),  in init_vqs()
1864 	if (!vqs || !io_callbacks || !io_names || !portdev->in_vqs ||  in init_vqs()
1865 	    !portdev->out_vqs) {  in init_vqs()
1882 	if (use_multiport(portdev)) {  in init_vqs()
1897 	err = virtio_find_vqs(portdev->vdev, nr_queues, vqs,  in init_vqs()
1904 	portdev->in_vqs[0] = vqs[0];  in init_vqs()
1905 	portdev->out_vqs[0] = vqs[1];  in init_vqs()
1907 	if (use_multiport(portdev)) {  in init_vqs()
1908 		portdev->c_ivq = vqs[j];  in init_vqs()
1909 		portdev->c_ovq = vqs[j + 1];  in init_vqs()
1913 			portdev->in_vqs[i] = vqs[j];  in init_vqs()
1914 			portdev->out_vqs[i] = vqs[j + 1];  in init_vqs()
1924 	kfree(portdev->out_vqs);  in init_vqs()
1925 	kfree(portdev->in_vqs);  in init_vqs()
1937 static void remove_vqs(struct ports_device *portdev)  in remove_vqs()  argument
1941 	virtio_device_for_each_vq(portdev->vdev, vq) {  in remove_vqs()
1948 	portdev->vdev->config->del_vqs(portdev->vdev);  in remove_vqs()
1949 	kfree(portdev->in_vqs);  in remove_vqs()
1950 	kfree(portdev->out_vqs);  in remove_vqs()
1955 	struct ports_device *portdev;  in virtcons_remove()  local
1958 	portdev = vdev->priv;  in virtcons_remove()
1961 	list_del(&portdev->list);  in virtcons_remove()
1967 	if (use_multiport(portdev))  in virtcons_remove()
1968 		cancel_work_sync(&portdev->control_work);  in virtcons_remove()
1970 		cancel_work_sync(&portdev->config_work);  in virtcons_remove()
1972 	list_for_each_entry_safe(port, port2, &portdev->ports, list)  in virtcons_remove()
1975 	unregister_chrdev(portdev->chr_major, "virtio-portsdev");  in virtcons_remove()
1985 	remove_vqs(portdev);  in virtcons_remove()
1986 	kfree(portdev);  in virtcons_remove()
1999 	struct ports_device *portdev;  in virtcons_probe()  local
2016 	portdev = kmalloc(sizeof(*portdev), GFP_KERNEL);  in virtcons_probe()
2017 	if (!portdev) {  in virtcons_probe()
2023 	portdev->vdev = vdev;  in virtcons_probe()
2024 	vdev->priv = portdev;  in virtcons_probe()
2026 	portdev->chr_major = register_chrdev(0, "virtio-portsdev",  in virtcons_probe()
2028 	if (portdev->chr_major < 0) {  in virtcons_probe()
2031 			portdev->chr_major, vdev->index);  in virtcons_probe()
2032 		err = portdev->chr_major;  in virtcons_probe()
2037 	portdev->max_nr_ports = 1;  in virtcons_probe()
2043 				 &portdev->max_nr_ports) == 0) {  in virtcons_probe()
2047 	err = init_vqs(portdev);  in virtcons_probe()
2053 	spin_lock_init(&portdev->ports_lock);  in virtcons_probe()
2054 	INIT_LIST_HEAD(&portdev->ports);  in virtcons_probe()
2055 	INIT_LIST_HEAD(&portdev->list);  in virtcons_probe()
2057 	virtio_device_ready(portdev->vdev);  in virtcons_probe()
2059 	INIT_WORK(&portdev->config_work, &config_work_handler);  in virtcons_probe()
2060 	INIT_WORK(&portdev->control_work, &control_work_handler);  in virtcons_probe()
2063 		spin_lock_init(&portdev->c_ivq_lock);  in virtcons_probe()
2064 		spin_lock_init(&portdev->c_ovq_lock);  in virtcons_probe()
2066 		err = fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);  in virtcons_probe()
2074 			__send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,  in virtcons_probe()
2085 		add_port(portdev, 0);  in virtcons_probe()
2089 	list_add_tail(&portdev->list, &pdrvdata.portdevs);  in virtcons_probe()
2092 	__send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,  in virtcons_probe()
2110 	unregister_chrdev(portdev->chr_major, "virtio-portsdev");  in virtcons_probe()
2112 	kfree(portdev);  in virtcons_probe()
2140 	struct ports_device *portdev;  in virtcons_freeze()  local
2143 	portdev = vdev->priv;  in virtcons_freeze()
2147 	if (use_multiport(portdev))  in virtcons_freeze()
2148 		virtqueue_disable_cb(portdev->c_ivq);  in virtcons_freeze()
2149 	cancel_work_sync(&portdev->control_work);  in virtcons_freeze()
2150 	cancel_work_sync(&portdev->config_work);  in virtcons_freeze()
2155 	if (use_multiport(portdev))  in virtcons_freeze()
2156 		virtqueue_disable_cb(portdev->c_ivq);  in virtcons_freeze()
2158 	list_for_each_entry(port, &portdev->ports, list) {  in virtcons_freeze()
2168 	remove_vqs(portdev);  in virtcons_freeze()
2175 	struct ports_device *portdev;  in virtcons_restore()  local
2179 	portdev = vdev->priv;  in virtcons_restore()
2181 	ret = init_vqs(portdev);  in virtcons_restore()
2185 	virtio_device_ready(portdev->vdev);  in virtcons_restore()
2187 	if (use_multiport(portdev))  in virtcons_restore()
2188 		fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);  in virtcons_restore()
2190 	list_for_each_entry(port, &portdev->ports, list) {  in virtcons_restore()
2191 		port->in_vq = portdev->in_vqs[port->id];  in virtcons_restore()
2192 		port->out_vq = portdev->out_vqs[port->id];  in virtcons_restore()