2 * "Unimplemented" device
4 * Copyright Linaro Limited, 2017
5 * Written by Peter Maydell
8 #ifndef HW_MISC_UNIMP_H
9 #define HW_MISC_UNIMP_H
11 #include "hw/qdev-properties.h"
12 #include "hw/sysbus.h"
14 #define TYPE_UNIMPLEMENTED_DEVICE "unimplemented-device"
16 #define UNIMPLEMENTED_DEVICE(obj) \
17 OBJECT_CHECK(UnimplementedDeviceState, (obj), TYPE_UNIMPLEMENTED_DEVICE)
20 SysBusDevice parent_obj
;
24 } UnimplementedDeviceState
;
27 * create_unimplemented_device: create and map a dummy device
28 * @name: name of the device for debug logging
29 * @base: base address of the device's MMIO region
30 * @size: size of the device's MMIO region
32 * This utility function creates and maps an instance of unimplemented-device,
33 * which is a dummy device which simply logs all guest accesses to
34 * it via the qemu_log LOG_UNIMP debug log.
35 * The device is mapped at priority -1000, which means that you can
36 * use it to cover a large region and then map other devices on top of it
39 static inline void create_unimplemented_device(const char *name
,
43 DeviceState
*dev
= qdev_create(NULL
, TYPE_UNIMPLEMENTED_DEVICE
);
45 qdev_prop_set_string(dev
, "name", name
);
46 qdev_prop_set_uint64(dev
, "size", size
);
47 qdev_init_nofail(dev
);
49 sysbus_mmio_map_overlap(SYS_BUS_DEVICE(dev
), 0, base
, -1000);