qemu

1
/*
2
 * Common device infrastructure for devices in the virtual css
3
 *
4
 * Copyright 2016 IBM Corp.
5
 * Author(s): Jing Liu <liujbjl@linux.vnet.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 "ccw-device.h"
14
#include "hw/qdev-properties.h"
15
#include "qemu/module.h"
16

17
static void ccw_device_refill_ids(CcwDevice *dev)
18
{
19
    SubchDev *sch = dev->sch;
20

21
    assert(sch);
22

23
    dev->dev_id.cssid = sch->cssid;
24
    dev->dev_id.ssid = sch->ssid;
25
    dev->dev_id.devid = sch->devno;
26
    dev->dev_id.valid = true;
27

28
    dev->subch_id.cssid = sch->cssid;
29
    dev->subch_id.ssid = sch->ssid;
30
    dev->subch_id.devid = sch->schid;
31
    dev->subch_id.valid = true;
32
}
33

34
static bool ccw_device_realize(CcwDevice *dev, Error **errp)
35
{
36
    ccw_device_refill_ids(dev);
37
    return true;
38
}
39

40
static Property ccw_device_properties[] = {
41
    DEFINE_PROP_CSS_DEV_ID("devno", CcwDevice, devno),
42
    DEFINE_PROP_CSS_DEV_ID_RO("dev_id", CcwDevice, dev_id),
43
    DEFINE_PROP_CSS_DEV_ID_RO("subch_id", CcwDevice, subch_id),
44
    DEFINE_PROP_END_OF_LIST(),
45
};
46

47
static void ccw_device_reset(DeviceState *d)
48
{
49
    CcwDevice *ccw_dev = CCW_DEVICE(d);
50

51
    css_reset_sch(ccw_dev->sch);
52
}
53

54
static void ccw_device_class_init(ObjectClass *klass, void *data)
55
{
56
    DeviceClass *dc = DEVICE_CLASS(klass);
57
    CCWDeviceClass *k = CCW_DEVICE_CLASS(klass);
58

59
    k->realize = ccw_device_realize;
60
    k->refill_ids = ccw_device_refill_ids;
61
    device_class_set_props(dc, ccw_device_properties);
62
    dc->reset = ccw_device_reset;
63
    dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
64
}
65

66
const VMStateDescription vmstate_ccw_dev = {
67
    .name = "s390_ccw_dev",
68
    .version_id = 1,
69
    .minimum_version_id = 1,
70
    .fields = (const VMStateField[]) {
71
        VMSTATE_STRUCT_POINTER(sch, CcwDevice, vmstate_subch_dev, SubchDev),
72
        VMSTATE_END_OF_LIST()
73
    }
74
};
75

76
static const TypeInfo ccw_device_info = {
77
    .name = TYPE_CCW_DEVICE,
78
    .parent = TYPE_DEVICE,
79
    .instance_size = sizeof(CcwDevice),
80
    .class_size = sizeof(CCWDeviceClass),
81
    .class_init = ccw_device_class_init,
82
    .abstract = true,
83
};
84

85
static void ccw_device_register(void)
86
{
87
    type_register_static(&ccw_device_info);
88
}
89

90
type_init(ccw_device_register)
91