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
ccw_device_refill_ids(CcwDevice * dev)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
ccw_device_realize(CcwDevice * dev,Error ** errp)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
ccw_device_reset(DeviceState * d)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
ccw_device_class_init(ObjectClass * klass,void * data)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
ccw_device_register(void)85 static void ccw_device_register(void)
86 {
87 type_register_static(&ccw_device_info);
88 }
89
90 type_init(ccw_device_register)
91