xref: /openbmc/qemu/hw/s390x/virtio-ccw-serial.c (revision 503bb0b9)
1 /*
2  * virtio ccw serial implementation
3  *
4  * Copyright 2012, 2015 IBM Corp.
5  * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
6  *
7  * This work is licensed under the terms of the GNU GPL, version 2 or (at
8  * your option) any later version. See the COPYING file in the top-level
9  * directory.
10  */
11 
12 #include "qemu/osdep.h"
13 #include "hw/virtio/virtio.h"
14 #include "hw/virtio/virtio-serial.h"
15 #include "virtio-ccw.h"
16 
17 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp)
18 {
19     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev);
20     DeviceState *vdev = DEVICE(&dev->vdev);
21     DeviceState *proxy = DEVICE(ccw_dev);
22     char *bus_name;
23 
24     /*
25      * For command line compatibility, this sets the virtio-serial-device bus
26      * name as before.
27      */
28     if (proxy->id) {
29         bus_name = g_strdup_printf("%s.0", proxy->id);
30         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
31         g_free(bus_name);
32     }
33 
34     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
35     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
36 }
37 
38 
39 static void virtio_ccw_serial_instance_init(Object *obj)
40 {
41     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
42 
43     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
44                                 TYPE_VIRTIO_SERIAL);
45 }
46 
47 static Property virtio_ccw_serial_properties[] = {
48     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
49                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
50     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
51                        VIRTIO_CCW_MAX_REV),
52     DEFINE_PROP_END_OF_LIST(),
53 };
54 
55 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
56 {
57     DeviceClass *dc = DEVICE_CLASS(klass);
58     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
59 
60     k->realize = virtio_ccw_serial_realize;
61     dc->props = virtio_ccw_serial_properties;
62     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
63 }
64 
65 static const TypeInfo virtio_ccw_serial = {
66     .name          = TYPE_VIRTIO_SERIAL_CCW,
67     .parent        = TYPE_VIRTIO_CCW_DEVICE,
68     .instance_size = sizeof(VirtioSerialCcw),
69     .instance_init = virtio_ccw_serial_instance_init,
70     .class_init    = virtio_ccw_serial_class_init,
71 };
72 
73 static void virtio_ccw_serial_register(void)
74 {
75     type_register_static(&virtio_ccw_serial);
76 }
77 
78 type_init(virtio_ccw_serial_register)
79