xref: /openbmc/qemu/hw/s390x/virtio-ccw-scsi.c (revision 64552b6b)
1 /*
2  * virtio ccw scsi 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 "qapi/error.h"
15 #include "qemu/module.h"
16 #include "virtio-ccw.h"
17 
18 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
19 {
20     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
21     DeviceState *vdev = DEVICE(&dev->vdev);
22     DeviceState *qdev = DEVICE(ccw_dev);
23     char *bus_name;
24 
25     /*
26      * For command line compatibility, this sets the virtio-scsi-device bus
27      * name as before.
28      */
29     if (qdev->id) {
30         bus_name = g_strdup_printf("%s.0", qdev->id);
31         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
32         g_free(bus_name);
33     }
34 
35     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
36     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
37 }
38 
39 static void virtio_ccw_scsi_instance_init(Object *obj)
40 {
41     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
42 
43     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
44                                 TYPE_VIRTIO_SCSI);
45 }
46 
47 static Property virtio_ccw_scsi_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_scsi_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_scsi_realize;
61     dc->props = virtio_ccw_scsi_properties;
62     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
63 }
64 
65 static const TypeInfo virtio_ccw_scsi = {
66     .name          = TYPE_VIRTIO_SCSI_CCW,
67     .parent        = TYPE_VIRTIO_CCW_DEVICE,
68     .instance_size = sizeof(VirtIOSCSICcw),
69     .instance_init = virtio_ccw_scsi_instance_init,
70     .class_init    = virtio_ccw_scsi_class_init,
71 };
72 
73 #ifdef CONFIG_VHOST_SCSI
74 
75 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
76 {
77     VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
78     DeviceState *vdev = DEVICE(&dev->vdev);
79 
80     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
81     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
82 }
83 
84 static void vhost_ccw_scsi_instance_init(Object *obj)
85 {
86     VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
87 
88     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
89                                 TYPE_VHOST_SCSI);
90 }
91 
92 static Property vhost_ccw_scsi_properties[] = {
93     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
94                        VIRTIO_CCW_MAX_REV),
95     DEFINE_PROP_END_OF_LIST(),
96 };
97 
98 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data)
99 {
100     DeviceClass *dc = DEVICE_CLASS(klass);
101     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
102 
103     k->realize = vhost_ccw_scsi_realize;
104     dc->props = vhost_ccw_scsi_properties;
105     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
106 }
107 
108 static const TypeInfo vhost_ccw_scsi = {
109     .name          = TYPE_VHOST_SCSI_CCW,
110     .parent        = TYPE_VIRTIO_CCW_DEVICE,
111     .instance_size = sizeof(VHostSCSICcw),
112     .instance_init = vhost_ccw_scsi_instance_init,
113     .class_init    = vhost_ccw_scsi_class_init,
114 };
115 
116 #endif
117 
118 static void virtio_ccw_scsi_register(void)
119 {
120     type_register_static(&virtio_ccw_scsi);
121 #ifdef CONFIG_VHOST_SCSI
122     type_register_static(&vhost_ccw_scsi);
123 #endif
124 }
125 
126 type_init(virtio_ccw_scsi_register)
127