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 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 };
  29 typedef struct CcwDevice CcwDevice;
  30
  31 extern const VMStateDescription vmstate_ccw_dev;
  32 #define VMSTATE_CCW_DEVICE(_field, _state)                     \
  33     VMSTATE_STRUCT(_field, _state, 1, vmstate_ccw_dev, CcwDevice)
  34
  35 struct CCWDeviceClass {
  36     DeviceClass parent_class;
  37     void (*unplug)(HotplugHandler *, DeviceState *, Error **);
  38     void (*realize)(CcwDevice *, Error **);
  39     void (*refill_ids)(CcwDevice *);
  40 };
  41
  42 static inline CcwDevice *to_ccw_dev_fast(DeviceState *d)
  43 {
  44     return container_of(d, CcwDevice, parent_obj);
  45 }
  46
  47 #define TYPE_CCW_DEVICE "ccw-device"
  48
  49 OBJECT_DECLARE_TYPE(CcwDevice, CCWDeviceClass, CCW_DEVICE)
  50
  51 #endif