LXR qemu/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
  19struct 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};
  30typedef struct CcwDevice CcwDevice;
  31
  32extern const VMStateDescription vmstate_ccw_dev;
  33#define VMSTATE_CCW_DEVICE(_field, _state)                     \
  34    VMSTATE_STRUCT(_field, _state, 1, vmstate_ccw_dev, CcwDevice)
  35
  36struct CCWDeviceClass {
  37    DeviceClass parent_class;
  38    void (*unplug)(HotplugHandler *, DeviceState *, Error **);
  39    void (*realize)(CcwDevice *, Error **);
  40    void (*refill_ids)(CcwDevice *);
  41};
  42
  43static 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
  50OBJECT_DECLARE_TYPE(CcwDevice, CCWDeviceClass, CCW_DEVICE)
  51
  52#endif
  53