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 typedef struct CCWDeviceClass CCWDeviceClass; 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 DECLARE_OBJ_CHECKERS(CcwDevice, CCWDeviceClass, 51 CCW_DEVICE, TYPE_CCW_DEVICE) 52 53 #endif 54