190 	struct ports_device *portdev;  member
274 static struct port *find_port_by_devt_in_portdev(struct ports_device *portdev,  in find_port_by_devt_in_portdev()  argument
280 	spin_lock_irqsave(&portdev->ports_lock, flags);  in find_port_by_devt_in_portdev()
281 	list_for_each_entry(port, &portdev->ports, list) {  in find_port_by_devt_in_portdev()
289 	spin_unlock_irqrestore(&portdev->ports_lock, flags);  in find_port_by_devt_in_portdev()
296 	struct ports_device *portdev;  in find_port_by_devt()  local
301 	list_for_each_entry(portdev, &pdrvdata.portdevs, list) {  in find_port_by_devt()
302 		port = find_port_by_devt_in_portdev(portdev, dev);  in find_port_by_devt()
312 static struct port *find_port_by_id(struct ports_device *portdev, u32 id)  in find_port_by_id()  argument
317 	spin_lock_irqsave(&portdev->ports_lock, flags);  in find_port_by_id()
318 	list_for_each_entry(port, &portdev->ports, list)  in find_port_by_id()
323 	spin_unlock_irqrestore(&portdev->ports_lock, flags);  in find_port_by_id()
328 static struct port *find_port_by_vq(struct ports_device *portdev,  in find_port_by_vq()  argument
334 	spin_lock_irqsave(&portdev->ports_lock, flags);  in find_port_by_vq()
335 	list_for_each_entry(port, &portdev->ports, list)  in find_port_by_vq()
340 	spin_unlock_irqrestore(&portdev->ports_lock, flags);  in find_port_by_vq()
356 static inline bool use_multiport(struct ports_device *portdev)  in use_multiport()  argument
362 	if (!portdev->vdev)  in use_multiport()
364 	return __virtio_test_bit(portdev->vdev, VIRTIO_CONSOLE_F_MULTIPORT);  in use_multiport()
524 	if (!port->portdev) {  in discard_port_data()
560 static ssize_t __send_control_msg(struct ports_device *portdev, u32 port_id,  in __send_control_msg()  argument
567 	if (!use_multiport(portdev))  in __send_control_msg()
570 	vq = portdev->c_ovq;  in __send_control_msg()
572 	spin_lock(&portdev->c_ovq_lock);  in __send_control_msg()
574 	portdev->cpkt.id = cpu_to_virtio32(portdev->vdev, port_id);  in __send_control_msg()
575 	portdev->cpkt.event = cpu_to_virtio16(portdev->vdev, event);  in __send_control_msg()
576 	portdev->cpkt.value = cpu_to_virtio16(portdev->vdev, value);  in __send_control_msg()
578 	sg_init_one(sg, &portdev->cpkt, sizeof(struct virtio_console_control));  in __send_control_msg()
580 	if (virtqueue_add_outbuf(vq, sg, 1, &portdev->cpkt, GFP_ATOMIC) == 0) {  in __send_control_msg()
587 	spin_unlock(&portdev->c_ovq_lock);  in __send_control_msg()
595 	if (port->portdev)  in send_control_msg()
596 		return __send_control_msg(port->portdev, port->id, event, value);  in send_control_msg()
607 	if (!port->portdev) {  in reclaim_consumed_buffers()
840 	buf = alloc_buf(port->portdev->vdev, count, 0);  in port_fops_write()
959 	buf = alloc_buf(port->portdev->vdev, 0, pipe->nrbufs);  in port_fops_splice_write()
1188 	vdev = port->portdev->vdev;  in resize_console()
1384 static int add_port(struct ports_device *portdev, u32 id)  in add_port()  argument
1399 	port->portdev = portdev;  in add_port()
1414 	port->in_vq = portdev->in_vqs[port->id];  in add_port()
1415 	port->out_vq = portdev->out_vqs[port->id];  in add_port()
1419 		dev_err(&port->portdev->vdev->dev, "Error allocating cdev\n");  in add_port()
1425 	devt = MKDEV(portdev->chr_major, id);  in add_port()
1428 		dev_err(&port->portdev->vdev->dev,  in add_port()
1432 	port->dev = device_create(pdrvdata.class, &port->portdev->vdev->dev,  in add_port()
1434 				  port->portdev->vdev->index, id);  in add_port()
1437 		dev_err(&port->portdev->vdev->dev,  in add_port()
1455 	if (is_rproc_serial(port->portdev->vdev))  in add_port()
1462 	else if (!use_multiport(port->portdev)) {  in add_port()
1472 	spin_lock_irq(&portdev->ports_lock);  in add_port()
1473 	list_add_tail(&port->list, &port->portdev->ports);  in add_port()
1474 	spin_unlock_irq(&portdev->ports_lock);  in add_port()
1489 			 port->portdev->vdev->index, id);  in add_port()
1506 	__send_control_msg(portdev, id, VIRTIO_CONSOLE_PORT_READY, 0);  in add_port()
1539 	spin_lock_irq(&port->portdev->ports_lock);  in unplug_port()
1541 	spin_unlock_irq(&port->portdev->ports_lock);  in unplug_port()
1570 	port->portdev = NULL;  in unplug_port()
1589 				   struct ports_device *portdev,  in handle_control_message()  argument
1599 	port = find_port_by_id(portdev, virtio32_to_cpu(vdev, cpkt->id));  in handle_control_message()
1603 		dev_dbg(&portdev->vdev->dev,  in handle_control_message()
1611 			dev_dbg(&portdev->vdev->dev,  in handle_control_message()
1617 		    portdev->max_nr_ports) {  in handle_control_message()
1618 			dev_warn(&portdev->vdev->dev,  in handle_control_message()
1621 				cpkt->id, portdev->max_nr_ports - 1);  in handle_control_message()
1624 		add_port(portdev, virtio32_to_cpu(vdev, cpkt->id));  in handle_control_message()
1727 	struct ports_device *portdev;  in control_work_handler()  local
1732 	portdev = container_of(work, struct ports_device, control_work);  in control_work_handler()
1733 	vq = portdev->c_ivq;  in control_work_handler()
1735 	spin_lock(&portdev->c_ivq_lock);  in control_work_handler()
1737 		spin_unlock(&portdev->c_ivq_lock);  in control_work_handler()
1742 		handle_control_message(vq->vdev, portdev, buf);  in control_work_handler()
1744 		spin_lock(&portdev->c_ivq_lock);  in control_work_handler()
1745 		if (add_inbuf(portdev->c_ivq, buf) < 0) {  in control_work_handler()
1746 			dev_warn(&portdev->vdev->dev,  in control_work_handler()
1751 	spin_unlock(&portdev->c_ivq_lock);  in control_work_handler()
1807 	if (!port->guest_connected && !is_rproc_serial(port->portdev->vdev))  in in_intr()
1823 	struct ports_device *portdev;  in control_intr()  local
1825 	portdev = vq->vdev->priv;  in control_intr()
1826 	schedule_work(&portdev->control_work);  in control_intr()
1831 	struct ports_device *portdev;  in config_intr()  local
1833 	portdev = vdev->priv;  in config_intr()
1835 	if (!use_multiport(portdev))  in config_intr()
1836 		schedule_work(&portdev->config_work);  in config_intr()
1841 	struct ports_device *portdev;  in config_work_handler()  local
1843 	portdev = container_of(work, struct ports_device, config_work);  in config_work_handler()
1844 	if (!use_multiport(portdev)) {  in config_work_handler()
1849 		vdev = portdev->vdev;  in config_work_handler()
1853 		port = find_port_by_id(portdev, 0);  in config_work_handler()
1867 static int init_vqs(struct ports_device *portdev)  in init_vqs()  argument
1875 	nr_ports = portdev->max_nr_ports;  in init_vqs()
1876 	nr_queues = use_multiport(portdev) ? (nr_ports + 1) * 2 : 2;  in init_vqs()
1882 	portdev->in_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *),  in init_vqs()
1884 	portdev->out_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *),  in init_vqs()
1886 	if (!vqs || !io_callbacks || !io_names || !portdev->in_vqs ||  in init_vqs()
1887 	    !portdev->out_vqs) {  in init_vqs()
1904 	if (use_multiport(portdev)) {  in init_vqs()
1919 	err = virtio_find_vqs(portdev->vdev, nr_queues, vqs,  in init_vqs()
1926 	portdev->in_vqs[0] = vqs[0];  in init_vqs()
1927 	portdev->out_vqs[0] = vqs[1];  in init_vqs()
1929 	if (use_multiport(portdev)) {  in init_vqs()
1930 		portdev->c_ivq = vqs[j];  in init_vqs()
1931 		portdev->c_ovq = vqs[j + 1];  in init_vqs()
1935 			portdev->in_vqs[i] = vqs[j];  in init_vqs()
1936 			portdev->out_vqs[i] = vqs[j + 1];  in init_vqs()
1946 	kfree(portdev->out_vqs);  in init_vqs()
1947 	kfree(portdev->in_vqs);  in init_vqs()
1959 static void remove_vqs(struct ports_device *portdev)  in remove_vqs()  argument
1963 	virtio_device_for_each_vq(portdev->vdev, vq) {  in remove_vqs()
1970 	portdev->vdev->config->del_vqs(portdev->vdev);  in remove_vqs()
1971 	kfree(portdev->in_vqs);  in remove_vqs()
1972 	kfree(portdev->out_vqs);  in remove_vqs()
1977 	struct ports_device *portdev;  in virtcons_remove()  local
1980 	portdev = vdev->priv;  in virtcons_remove()
1983 	list_del(&portdev->list);  in virtcons_remove()
1989 	if (use_multiport(portdev))  in virtcons_remove()
1990 		cancel_work_sync(&portdev->control_work);  in virtcons_remove()
1992 		cancel_work_sync(&portdev->config_work);  in virtcons_remove()
1994 	list_for_each_entry_safe(port, port2, &portdev->ports, list)  in virtcons_remove()
1997 	unregister_chrdev(portdev->chr_major, "virtio-portsdev");  in virtcons_remove()
2007 	remove_vqs(portdev);  in virtcons_remove()
2008 	kfree(portdev);  in virtcons_remove()
2021 	struct ports_device *portdev;  in virtcons_probe()  local
2038 	portdev = kmalloc(sizeof(*portdev), GFP_KERNEL);  in virtcons_probe()
2039 	if (!portdev) {  in virtcons_probe()
2045 	portdev->vdev = vdev;  in virtcons_probe()
2046 	vdev->priv = portdev;  in virtcons_probe()
2048 	portdev->chr_major = register_chrdev(0, "virtio-portsdev",  in virtcons_probe()
2050 	if (portdev->chr_major < 0) {  in virtcons_probe()
2053 			portdev->chr_major, vdev->index);  in virtcons_probe()
2054 		err = portdev->chr_major;  in virtcons_probe()
2059 	portdev->max_nr_ports = 1;  in virtcons_probe()
2065 				 &portdev->max_nr_ports) == 0) {  in virtcons_probe()
2069 	err = init_vqs(portdev);  in virtcons_probe()
2075 	spin_lock_init(&portdev->ports_lock);  in virtcons_probe()
2076 	INIT_LIST_HEAD(&portdev->ports);  in virtcons_probe()
2077 	INIT_LIST_HEAD(&portdev->list);  in virtcons_probe()
2079 	virtio_device_ready(portdev->vdev);  in virtcons_probe()
2081 	INIT_WORK(&portdev->config_work, &config_work_handler);  in virtcons_probe()
2082 	INIT_WORK(&portdev->control_work, &control_work_handler);  in virtcons_probe()
2087 		spin_lock_init(&portdev->c_ivq_lock);  in virtcons_probe()
2088 		spin_lock_init(&portdev->c_ovq_lock);  in virtcons_probe()
2090 		nr_added_bufs = fill_queue(portdev->c_ivq,  in virtcons_probe()
2091 					   &portdev->c_ivq_lock);  in virtcons_probe()
2099 			__send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,  in virtcons_probe()
2110 		add_port(portdev, 0);  in virtcons_probe()
2114 	list_add_tail(&portdev->list, &pdrvdata.portdevs);  in virtcons_probe()
2117 	__send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,  in virtcons_probe()
2135 	unregister_chrdev(portdev->chr_major, "virtio-portsdev");  in virtcons_probe()
2137 	kfree(portdev);  in virtcons_probe()
2165 	struct ports_device *portdev;  in virtcons_freeze()  local
2168 	portdev = vdev->priv;  in virtcons_freeze()
2172 	if (use_multiport(portdev))  in virtcons_freeze()
2173 		virtqueue_disable_cb(portdev->c_ivq);  in virtcons_freeze()
2174 	cancel_work_sync(&portdev->control_work);  in virtcons_freeze()
2175 	cancel_work_sync(&portdev->config_work);  in virtcons_freeze()
2180 	if (use_multiport(portdev))  in virtcons_freeze()
2181 		virtqueue_disable_cb(portdev->c_ivq);  in virtcons_freeze()
2183 	list_for_each_entry(port, &portdev->ports, list) {  in virtcons_freeze()
2193 	remove_vqs(portdev);  in virtcons_freeze()
2200 	struct ports_device *portdev;  in virtcons_restore()  local
2204 	portdev = vdev->priv;  in virtcons_restore()
2206 	ret = init_vqs(portdev);  in virtcons_restore()
2210 	virtio_device_ready(portdev->vdev);  in virtcons_restore()
2212 	if (use_multiport(portdev))  in virtcons_restore()
2213 		fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);  in virtcons_restore()
2215 	list_for_each_entry(port, &portdev->ports, list) {  in virtcons_restore()
2216 		port->in_vq = portdev->in_vqs[port->id];  in virtcons_restore()
2217 		port->out_vq = portdev->out_vqs[port->id];  in virtcons_restore()