1 /* 2 * "Unimplemented" device 3 * 4 * Copyright Linaro Limited, 2017 5 * Written by Peter Maydell 6 */ 7 8 #ifndef HW_MISC_UNIMP_H 9 #define HW_MISC_UNIMP_H 10 11 #define TYPE_UNIMPLEMENTED_DEVICE "unimplemented-device" 12 13 /** 14 * create_unimplemented_device: create and map a dummy device 15 * @name: name of the device for debug logging 16 * @base: base address of the device's MMIO region 17 * @size: size of the device's MMIO region 18 * 19 * This utility function creates and maps an instance of unimplemented-device, 20 * which is a dummy device which simply logs all guest accesses to 21 * it via the qemu_log LOG_UNIMP debug log. 22 * The device is mapped at priority -1000, which means that you can 23 * use it to cover a large region and then map other devices on top of it 24 * if necessary. 25 */ 26 static inline void create_unimplemented_device(const char *name, 27 hwaddr base, 28 hwaddr size) 29 { 30 DeviceState *dev = qdev_create(NULL, TYPE_UNIMPLEMENTED_DEVICE); 31 32 qdev_prop_set_string(dev, "name", name); 33 qdev_prop_set_uint64(dev, "size", size); 34 qdev_init_nofail(dev); 35 36 sysbus_mmio_map_overlap(SYS_BUS_DEVICE(dev), 0, base, -1000); 37 } 38 39 #endif 40