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     bool (*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