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
  18 typedef struct CcwDevice {
  19     DeviceState parent_obj;
  20     SubchDev *sch;
  21     /* <cssid>.<ssid>.<device number> */
  22     /* The user-set busid of the virtual ccw device. */
  23     CssDevId devno;
  24     /* The actual busid of the virtual ccw device. */
  25     CssDevId dev_id;
  26     /* The actual busid of the virtual subchannel. */
  27     CssDevId subch_id;
  28 } CcwDevice;
  29
  30 extern const VMStateDescription vmstate_ccw_dev;
  31 #define VMSTATE_CCW_DEVICE(_field, _state)                     \
  32     VMSTATE_STRUCT(_field, _state, 1, vmstate_ccw_dev, CcwDevice)
  33
  34 typedef struct CCWDeviceClass {
  35     DeviceClass parent_class;
  36     void (*unplug)(HotplugHandler *, DeviceState *, Error **);
  37     void (*realize)(CcwDevice *, Error **);
  38     void (*refill_ids)(CcwDevice *);
  39 } CCWDeviceClass;
  40
  41 static inline CcwDevice *to_ccw_dev_fast(DeviceState *d)
  42 {
  43     return container_of(d, CcwDevice, parent_obj);
  44 }
  45
  46 #define TYPE_CCW_DEVICE "ccw-device"
  47
  48 #define CCW_DEVICE(obj) OBJECT_CHECK(CcwDevice, (obj), TYPE_CCW_DEVICE)
  49 #define CCW_DEVICE_GET_CLASS(obj) \
  50     OBJECT_GET_CLASS(CCWDeviceClass, (obj), TYPE_CCW_DEVICE)
  51 #define CCW_DEVICE_CLASS(klass) \
  52     OBJECT_CLASS_CHECK(CCWDeviceClass, (klass), TYPE_CCW_DEVICE)
  53
  54 #endif