LXR qemu/hw/cpu/core.c

   1/*
   2 * CPU core abstract device
   3 *
   4 * Copyright (C) 2016 Bharata B Rao <bharata@linux.vnet.ibm.com>
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7 * See the COPYING file in the top-level directory.
   8 */
   9#include "qemu/osdep.h"
  10#include "hw/cpu/core.h"
  11#include "qapi/visitor.h"
  12#include "qapi/error.h"
  13#include "sysemu/cpus.h"
  14
  15static void core_prop_get_core_id(Object *obj, Visitor *v, const char *name,
  16                                  void *opaque, Error **errp)
  17{
  18    CPUCore *core = CPU_CORE(obj);
  19    int64_t value = core->core_id;
  20
  21    visit_type_int(v, name, &value, errp);
  22}
  23
  24static void core_prop_set_core_id(Object *obj, Visitor *v, const char *name,
  25                                  void *opaque, Error **errp)
  26{
  27    CPUCore *core = CPU_CORE(obj);
  28    Error *local_err = NULL;
  29    int64_t value;
  30
  31    visit_type_int(v, name, &value, &local_err);
  32    if (local_err) {
  33        error_propagate(errp, local_err);
  34        return;
  35    }
  36
  37    if (value < 0) {
  38        error_setg(errp, "Invalid core id %"PRId64, value);
  39        return;
  40    }
  41
  42    core->core_id = value;
  43}
  44
  45static void core_prop_get_nr_threads(Object *obj, Visitor *v, const char *name,
  46                                     void *opaque, Error **errp)
  47{
  48    CPUCore *core = CPU_CORE(obj);
  49    int64_t value = core->nr_threads;
  50
  51    visit_type_int(v, name, &value, errp);
  52}
  53
  54static void core_prop_set_nr_threads(Object *obj, Visitor *v, const char *name,
  55                                     void *opaque, Error **errp)
  56{
  57    CPUCore *core = CPU_CORE(obj);
  58    Error *local_err = NULL;
  59    int64_t value;
  60
  61    visit_type_int(v, name, &value, &local_err);
  62    if (local_err) {
  63        error_propagate(errp, local_err);
  64        return;
  65    }
  66
  67    core->nr_threads = value;
  68}
  69
  70static void cpu_core_instance_init(Object *obj)
  71{
  72    CPUCore *core = CPU_CORE(obj);
  73
  74    object_property_add(obj, "core-id", "int", core_prop_get_core_id,
  75                        core_prop_set_core_id, NULL, NULL, NULL);
  76    object_property_add(obj, "nr-threads", "int", core_prop_get_nr_threads,
  77                        core_prop_set_nr_threads, NULL, NULL, NULL);
  78    core->nr_threads = smp_threads;
  79}
  80
  81static void cpu_core_class_init(ObjectClass *oc, void *data)
  82{
  83    DeviceClass *dc = DEVICE_CLASS(oc);
  84
  85    set_bit(DEVICE_CATEGORY_CPU, dc->categories);
  86}
  87
  88static const TypeInfo cpu_core_type_info = {
  89    .name = TYPE_CPU_CORE,
  90    .parent = TYPE_DEVICE,
  91    .abstract = true,
  92    .class_init = cpu_core_class_init,
  93    .instance_size = sizeof(CPUCore),
  94    .instance_init = cpu_core_instance_init,
  95};
  96
  97static void cpu_core_register_types(void)
  98{
  99    type_register_static(&cpu_core_type_info);
 100}
 101
 102type_init(cpu_core_register_types)
 103