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 "qemu/log.h"
  20 #include "hw/sysbus.h"
  21 #include "hw/qdev-properties.h"
  22 #include "hw/tricore/tricore_testdevice.h"
  23
  24 static void tricore_testdevice_write(void *opaque, hwaddr offset,
  25                                       uint64_t value, unsigned size)
  26 {
  27     if (value != 0) {
  28         qemu_log_mask(LOG_GUEST_ERROR, "Test %" PRIu64 " failed!\n", value);
  29     }
  30     exit(value);
  31 }
  32
  33 static uint64_t tricore_testdevice_read(void *opaque, hwaddr offset,
  34                                          unsigned size)
  35 {
  36     return 0xdeadbeef;
  37 }
  38
  39 static void tricore_testdevice_reset(DeviceState *dev)
  40 {
  41 }
  42
  43 static const MemoryRegionOps tricore_testdevice_ops = {
  44     .read = tricore_testdevice_read,
  45     .write = tricore_testdevice_write,
  46     .valid = {
  47         .min_access_size = 4,
  48         .max_access_size = 4,
  49     },
  50     .endianness = DEVICE_NATIVE_ENDIAN,
  51 };
  52
  53 static void tricore_testdevice_init(Object *obj)
  54 {
  55     TriCoreTestDeviceState *s = TRICORE_TESTDEVICE(obj);
  56    /* map memory */
  57     memory_region_init_io(&s->iomem, OBJECT(s), &tricore_testdevice_ops, s,
  58                           "tricore_testdevice", 0x4);
  59 }
  60
  61 static Property tricore_testdevice_properties[] = {
  62     DEFINE_PROP_END_OF_LIST()
  63 };
  64
  65 static void tricore_testdevice_class_init(ObjectClass *klass, void *data)
  66 {
  67     DeviceClass *dc = DEVICE_CLASS(klass);
  68
  69     device_class_set_props(dc, tricore_testdevice_properties);
  70     dc->reset = tricore_testdevice_reset;
  71 }
  72
  73 static const TypeInfo tricore_testdevice_info = {
  74     .name          = TYPE_TRICORE_TESTDEVICE,
  75     .parent        = TYPE_SYS_BUS_DEVICE,
  76     .instance_size = sizeof(TriCoreTestDeviceState),
  77     .instance_init = tricore_testdevice_init,
  78     .class_init    = tricore_testdevice_class_init,
  79 };
  80
  81 static void tricore_testdevice_register_types(void)
  82 {
  83     type_register_static(&tricore_testdevice_info);
  84 }
  85
  86 type_init(tricore_testdevice_register_types)