LXR qemu/include/hw/misc/unimp.h

   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#include "hw/sysbus.h"
  12
  13#define TYPE_UNIMPLEMENTED_DEVICE "unimplemented-device"
  14
  15/**
  16 * create_unimplemented_device: create and map a dummy device
  17 * @name: name of the device for debug logging
  18 * @base: base address of the device's MMIO region
  19 * @size: size of the device's MMIO region
  20 *
  21 * This utility function creates and maps an instance of unimplemented-device,
  22 * which is a dummy device which simply logs all guest accesses to
  23 * it via the qemu_log LOG_UNIMP debug log.
  24 * The device is mapped at priority -1000, which means that you can
  25 * use it to cover a large region and then map other devices on top of it
  26 * if necessary.
  27 */
  28static inline void create_unimplemented_device(const char *name,
  29                                               hwaddr base,
  30                                               hwaddr size)
  31{
  32    DeviceState *dev = qdev_create(NULL, TYPE_UNIMPLEMENTED_DEVICE);
  33
  34    qdev_prop_set_string(dev, "name", name);
  35    qdev_prop_set_uint64(dev, "size", size);
  36    qdev_init_nofail(dev);
  37
  38    sysbus_mmio_map_overlap(SYS_BUS_DEVICE(dev), 0, base, -1000);
  39}
  40
  41#endif
  42