Merge remote-tracking branch 'remotes/mcayland/tags/qemu-openbios-20220115' into...
[qemu.git] / hw / s390x / ccw-device.h
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 #ifndef HW_S390X_CCW_DEVICE_H
13 #define HW_S390X_CCW_DEVICE_H
14 #include "qom/object.h"
15 #include "hw/qdev-core.h"
16 #include "hw/s390x/css.h"
17 #include "hw/s390x/css-bridge.h"
18
19 struct CcwDevice {
20 DeviceState parent_obj;
21 SubchDev *sch;
22 /* <cssid>.<ssid>.<device number> */
23 /* The user-set busid of the virtual ccw device. */
24 CssDevId devno;
25 /* The actual busid of the virtual ccw device. */
26 CssDevId dev_id;
27 /* The actual busid of the virtual subchannel. */
28 CssDevId subch_id;
29 };
30 typedef struct CcwDevice CcwDevice;
31
32 extern const VMStateDescription vmstate_ccw_dev;
33 #define VMSTATE_CCW_DEVICE(_field, _state) \
34 VMSTATE_STRUCT(_field, _state, 1, vmstate_ccw_dev, CcwDevice)
35
36 struct CCWDeviceClass {
37 DeviceClass parent_class;
38 void (*unplug)(HotplugHandler *, DeviceState *, Error **);
39 void (*realize)(CcwDevice *, Error **);
40 void (*refill_ids)(CcwDevice *);
41 };
42
43 static inline CcwDevice *to_ccw_dev_fast(DeviceState *d)
44 {
45 return container_of(d, CcwDevice, parent_obj);
46 }
47
48 #define TYPE_CCW_DEVICE "ccw-device"
49
50 OBJECT_DECLARE_TYPE(CcwDevice, CCWDeviceClass, CCW_DEVICE)
51
52 #endif