171 	struct ports_device *portdev;  member
255 static struct port *find_port_by_devt_in_portdev(struct ports_device *portdev,  in find_port_by_devt_in_portdev()  argument
261 	spin_lock_irqsave(&portdev->ports_lock, flags);  in find_port_by_devt_in_portdev()
262 	list_for_each_entry(port, &portdev->ports, list) {  in find_port_by_devt_in_portdev()
270 	spin_unlock_irqrestore(&portdev->ports_lock, flags);  in find_port_by_devt_in_portdev()
277 	struct ports_device *portdev;  in find_port_by_devt()  local
282 	list_for_each_entry(portdev, &pdrvdata.portdevs, list) {  in find_port_by_devt()
283 		port = find_port_by_devt_in_portdev(portdev, dev);  in find_port_by_devt()
293 static struct port *find_port_by_id(struct ports_device *portdev, u32 id)  in find_port_by_id()  argument
298 	spin_lock_irqsave(&portdev->ports_lock, flags);  in find_port_by_id()
299 	list_for_each_entry(port, &portdev->ports, list)  in find_port_by_id()
304 	spin_unlock_irqrestore(&portdev->ports_lock, flags);  in find_port_by_id()
309 static struct port *find_port_by_vq(struct ports_device *portdev,  in find_port_by_vq()  argument
315 	spin_lock_irqsave(&portdev->ports_lock, flags);  in find_port_by_vq()
316 	list_for_each_entry(port, &portdev->ports, list)  in find_port_by_vq()
321 	spin_unlock_irqrestore(&portdev->ports_lock, flags);  in find_port_by_vq()
337 static inline bool use_multiport(struct ports_device *portdev)  in use_multiport()  argument
343 	if (!portdev->vdev)  in use_multiport()
345 	return __virtio_test_bit(portdev->vdev, VIRTIO_CONSOLE_F_MULTIPORT);  in use_multiport()
505 	if (!port->portdev) {  in discard_port_data()
541 static ssize_t __send_control_msg(struct ports_device *portdev, u32 port_id,  in __send_control_msg()  argument
548 	if (!use_multiport(portdev))  in __send_control_msg()
551 	vq = portdev->c_ovq;  in __send_control_msg()
553 	spin_lock(&portdev->c_ovq_lock);  in __send_control_msg()
555 	portdev->cpkt.id = cpu_to_virtio32(portdev->vdev, port_id);  in __send_control_msg()
556 	portdev->cpkt.event = cpu_to_virtio16(portdev->vdev, event);  in __send_control_msg()
557 	portdev->cpkt.value = cpu_to_virtio16(portdev->vdev, value);  in __send_control_msg()
559 	sg_init_one(sg, &portdev->cpkt, sizeof(struct virtio_console_control));  in __send_control_msg()
561 	if (virtqueue_add_outbuf(vq, sg, 1, &portdev->cpkt, GFP_ATOMIC) == 0) {  in __send_control_msg()
568 	spin_unlock(&portdev->c_ovq_lock);  in __send_control_msg()
576 	if (port->portdev)  in send_control_msg()
577 		return __send_control_msg(port->portdev, port->id, event, value);  in send_control_msg()
588 	if (!port->portdev) {  in reclaim_consumed_buffers()
821 	buf = alloc_buf(port->portdev->vdev, count, 0);  in port_fops_write()
937 	buf = alloc_buf(port->portdev->vdev, 0, occupancy);  in port_fops_splice_write()
1167 	vdev = port->portdev->vdev;  in resize_console()
1355 static int add_port(struct ports_device *portdev, u32 id)  in add_port()  argument
1369 	port->portdev = portdev;  in add_port()
1385 	port->in_vq = portdev->in_vqs[port->id];  in add_port()
1386 	port->out_vq = portdev->out_vqs[port->id];  in add_port()
1390 		dev_err(&port->portdev->vdev->dev, "Error allocating cdev\n");  in add_port()
1396 	devt = MKDEV(portdev->chr_major, id);  in add_port()
1399 		dev_err(&port->portdev->vdev->dev,  in add_port()
1403 	port->dev = device_create(&port_class, &port->portdev->vdev->dev,  in add_port()
1405 				  port->portdev->vdev->index, id);  in add_port()
1408 		dev_err(&port->portdev->vdev->dev,  in add_port()
1428 	if (is_rproc_serial(port->portdev->vdev))  in add_port()
1435 	else if (!use_multiport(port->portdev)) {  in add_port()
1445 	spin_lock_irq(&portdev->ports_lock);  in add_port()
1446 	list_add_tail(&port->list, &port->portdev->ports);  in add_port()
1447 	spin_unlock_irq(&portdev->ports_lock);  in add_port()
1461 		 port->portdev->vdev->index, id);  in add_port()
1476 	__send_control_msg(portdev, id, VIRTIO_CONSOLE_PORT_READY, 0);  in add_port()
1509 	spin_lock_irq(&port->portdev->ports_lock);  in unplug_port()
1511 	spin_unlock_irq(&port->portdev->ports_lock);  in unplug_port()
1541 	port->portdev = NULL;  in unplug_port()
1560 				   struct ports_device *portdev,  in handle_control_message()  argument
1570 	port = find_port_by_id(portdev, virtio32_to_cpu(vdev, cpkt->id));  in handle_control_message()
1574 		dev_dbg(&portdev->vdev->dev,  in handle_control_message()
1582 			dev_dbg(&portdev->vdev->dev,  in handle_control_message()
1588 		    portdev->max_nr_ports) {  in handle_control_message()
1589 			dev_warn(&portdev->vdev->dev,  in handle_control_message()
1592 				cpkt->id, portdev->max_nr_ports - 1);  in handle_control_message()
1595 		add_port(portdev, virtio32_to_cpu(vdev, cpkt->id));  in handle_control_message()
1697 	struct ports_device *portdev;  in control_work_handler()  local
1702 	portdev = container_of(work, struct ports_device, control_work);  in control_work_handler()
1703 	vq = portdev->c_ivq;  in control_work_handler()
1705 	spin_lock(&portdev->c_ivq_lock);  in control_work_handler()
1707 		spin_unlock(&portdev->c_ivq_lock);  in control_work_handler()
1712 		handle_control_message(vq->vdev, portdev, buf);  in control_work_handler()
1714 		spin_lock(&portdev->c_ivq_lock);  in control_work_handler()
1715 		if (add_inbuf(portdev->c_ivq, buf) < 0) {  in control_work_handler()
1716 			dev_warn(&portdev->vdev->dev,  in control_work_handler()
1721 	spin_unlock(&portdev->c_ivq_lock);  in control_work_handler()
1777 	if (!port->guest_connected && !is_rproc_serial(port->portdev->vdev))  in in_intr()
1793 	struct ports_device *portdev;  in control_intr()  local
1795 	portdev = vq->vdev->priv;  in control_intr()
1796 	schedule_work(&portdev->control_work);  in control_intr()
1801 	struct ports_device *portdev;  in config_intr()  local
1803 	portdev = vdev->priv;  in config_intr()
1805 	if (!use_multiport(portdev))  in config_intr()
1806 		schedule_work(&portdev->config_work);  in config_intr()
1811 	struct ports_device *portdev;  in config_work_handler()  local
1813 	portdev = container_of(work, struct ports_device, config_work);  in config_work_handler()
1814 	if (!use_multiport(portdev)) {  in config_work_handler()
1819 		vdev = portdev->vdev;  in config_work_handler()
1823 		port = find_port_by_id(portdev, 0);  in config_work_handler()
1837 static int init_vqs(struct ports_device *portdev)  in init_vqs()  argument
1845 	nr_ports = portdev->max_nr_ports;  in init_vqs()
1846 	nr_queues = use_multiport(portdev) ? (nr_ports + 1) * 2 : 2;  in init_vqs()
1852 	portdev->in_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *),  in init_vqs()
1854 	portdev->out_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *),  in init_vqs()
1856 	if (!vqs || !io_callbacks || !io_names || !portdev->in_vqs ||  in init_vqs()
1857 	    !portdev->out_vqs) {  in init_vqs()
1874 	if (use_multiport(portdev)) {  in init_vqs()
1889 	err = virtio_find_vqs(portdev->vdev, nr_queues, vqs,  in init_vqs()
1896 	portdev->in_vqs[0] = vqs[0];  in init_vqs()
1897 	portdev->out_vqs[0] = vqs[1];  in init_vqs()
1899 	if (use_multiport(portdev)) {  in init_vqs()
1900 		portdev->c_ivq = vqs[j];  in init_vqs()
1901 		portdev->c_ovq = vqs[j + 1];  in init_vqs()
1905 			portdev->in_vqs[i] = vqs[j];  in init_vqs()
1906 			portdev->out_vqs[i] = vqs[j + 1];  in init_vqs()
1916 	kfree(portdev->out_vqs);  in init_vqs()
1917 	kfree(portdev->in_vqs);  in init_vqs()
1929 static void remove_vqs(struct ports_device *portdev)  in remove_vqs()  argument
1933 	virtio_device_for_each_vq(portdev->vdev, vq) {  in remove_vqs()
1941 	portdev->vdev->config->del_vqs(portdev->vdev);  in remove_vqs()
1942 	kfree(portdev->in_vqs);  in remove_vqs()
1943 	kfree(portdev->out_vqs);  in remove_vqs()
1948 	struct ports_device *portdev;  in virtcons_remove()  local
1951 	portdev = vdev->priv;  in virtcons_remove()
1954 	list_del(&portdev->list);  in virtcons_remove()
1959 	if (use_multiport(portdev))  in virtcons_remove()
1960 		flush_work(&portdev->control_work);  in virtcons_remove()
1962 		flush_work(&portdev->config_work);  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()
2044 		if (portdev->max_nr_ports == 0 ||  in virtcons_probe()
2045 		    portdev->max_nr_ports > VIRTCONS_MAX_PORTS) {  in virtcons_probe()
2048 				portdev->max_nr_ports);  in virtcons_probe()
2055 	err = init_vqs(portdev);  in virtcons_probe()
2061 	spin_lock_init(&portdev->ports_lock);  in virtcons_probe()
2062 	INIT_LIST_HEAD(&portdev->ports);  in virtcons_probe()
2063 	INIT_LIST_HEAD(&portdev->list);  in virtcons_probe()
2065 	virtio_device_ready(portdev->vdev);  in virtcons_probe()
2067 	INIT_WORK(&portdev->config_work, &config_work_handler);  in virtcons_probe()
2068 	INIT_WORK(&portdev->control_work, &control_work_handler);  in virtcons_probe()
2071 		spin_lock_init(&portdev->c_ivq_lock);  in virtcons_probe()
2072 		spin_lock_init(&portdev->c_ovq_lock);  in virtcons_probe()
2074 		err = fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);  in virtcons_probe()
2082 			__send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,  in virtcons_probe()
2093 		add_port(portdev, 0);  in virtcons_probe()
2097 	list_add_tail(&portdev->list, &pdrvdata.portdevs);  in virtcons_probe()
2100 	__send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,  in virtcons_probe()
2118 	unregister_chrdev(portdev->chr_major, "virtio-portsdev");  in virtcons_probe()
2120 	kfree(portdev);  in virtcons_probe()
2150 	struct ports_device *portdev;  in virtcons_freeze()  local
2153 	portdev = vdev->priv;  in virtcons_freeze()
2157 	if (use_multiport(portdev))  in virtcons_freeze()
2158 		virtqueue_disable_cb(portdev->c_ivq);  in virtcons_freeze()
2159 	cancel_work_sync(&portdev->control_work);  in virtcons_freeze()
2160 	cancel_work_sync(&portdev->config_work);  in virtcons_freeze()
2165 	if (use_multiport(portdev))  in virtcons_freeze()
2166 		virtqueue_disable_cb(portdev->c_ivq);  in virtcons_freeze()
2168 	list_for_each_entry(port, &portdev->ports, list) {  in virtcons_freeze()
2178 	remove_vqs(portdev);  in virtcons_freeze()
2185 	struct ports_device *portdev;  in virtcons_restore()  local
2189 	portdev = vdev->priv;  in virtcons_restore()
2191 	ret = init_vqs(portdev);  in virtcons_restore()
2195 	virtio_device_ready(portdev->vdev);  in virtcons_restore()
2197 	if (use_multiport(portdev))  in virtcons_restore()
2198 		fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);  in virtcons_restore()
2200 	list_for_each_entry(port, &portdev->ports, list) {  in virtcons_restore()
2201 		port->in_vq = portdev->in_vqs[port->id];  in virtcons_restore()
2202 		port->out_vq = portdev->out_vqs[port->id];  in virtcons_restore()