hw/tricore/tricore_testdevice.c

   1 /*
   2  *  Copyright (c) 2018-2021 Bastian Koppelmann Paderborn University
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "qemu/osdep.h"
  19 #include "hw/sysbus.h"
  20 #include "hw/qdev-properties.h"
  21 #include "hw/tricore/tricore_testdevice.h"
  22
  23 static void tricore_testdevice_write(void *opaque, hwaddr offset,
  24                                       uint64_t value, unsigned size)
  25 {
  26     exit(value);
  27 }
  28
  29 static uint64_t tricore_testdevice_read(void *opaque, hwaddr offset,
  30                                          unsigned size)
  31 {
  32     return 0xdeadbeef;
  33 }
  34
  35 static void tricore_testdevice_reset(DeviceState *dev)
  36 {
  37 }
  38
  39 static const MemoryRegionOps tricore_testdevice_ops = {
  40     .read = tricore_testdevice_read,
  41     .write = tricore_testdevice_write,
  42     .valid = {
  43         .min_access_size = 4,
  44         .max_access_size = 4,
  45     },
  46     .endianness = DEVICE_NATIVE_ENDIAN,
  47 };
  48
  49 static void tricore_testdevice_init(Object *obj)
  50 {
  51     TriCoreTestDeviceState *s = TRICORE_TESTDEVICE(obj);
  52    /* map memory */
  53     memory_region_init_io(&s->iomem, OBJECT(s), &tricore_testdevice_ops, s,
  54                           "tricore_testdevice", 0x4);
  55 }
  56
  57 static Property tricore_testdevice_properties[] = {
  58     DEFINE_PROP_END_OF_LIST()
  59 };
  60
  61 static void tricore_testdevice_class_init(ObjectClass *klass, void *data)
  62 {
  63     DeviceClass *dc = DEVICE_CLASS(klass);
  64
  65     device_class_set_props(dc, tricore_testdevice_properties);
  66     dc->reset = tricore_testdevice_reset;
  67 }
  68
  69 static const TypeInfo tricore_testdevice_info = {
  70     .name          = TYPE_TRICORE_TESTDEVICE,
  71     .parent        = TYPE_SYS_BUS_DEVICE,
  72     .instance_size = sizeof(TriCoreTestDeviceState),
  73     .instance_init = tricore_testdevice_init,
  74     .class_init    = tricore_testdevice_class_init,
  75 };
  76
  77 static void tricore_testdevice_register_types(void)
  78 {
  79     type_register_static(&tricore_testdevice_info);
  80 }
  81
  82 type_init(tricore_testdevice_register_types)