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
  10#include "qemu/osdep.h"
  11#include "hw/cpu/core.h"
  12#include "qapi/visitor.h"
  13#include "qemu/module.h"
  14#include "qapi/error.h"
  15#include "sysemu/cpus.h"
  16#include "hw/boards.h"
  17
  18static void core_prop_get_core_id(Object *obj, Visitor *v, const char *name,
  19                                  void *opaque, Error **errp)
  20{
  21    CPUCore *core = CPU_CORE(obj);
  22    int64_t value = core->core_id;
  23
  24    visit_type_int(v, name, &value, errp);
  25}
  26
  27static void core_prop_set_core_id(Object *obj, Visitor *v, const char *name,
  28                                  void *opaque, Error **errp)
  29{
  30    CPUCore *core = CPU_CORE(obj);
  31    Error *local_err = NULL;
  32    int64_t value;
  33
  34    visit_type_int(v, name, &value, &local_err);
  35    if (local_err) {
  36        error_propagate(errp, local_err);
  37        return;
  38    }
  39
  40    if (value < 0) {
  41        error_setg(errp, "Invalid core id %"PRId64, value);
  42        return;
  43    }
  44
  45    core->core_id = value;
  46}
  47
  48static void core_prop_get_nr_threads(Object *obj, Visitor *v, const char *name,
  49                                     void *opaque, Error **errp)
  50{
  51    CPUCore *core = CPU_CORE(obj);
  52    int64_t value = core->nr_threads;
  53
  54    visit_type_int(v, name, &value, errp);
  55}
  56
  57static void core_prop_set_nr_threads(Object *obj, Visitor *v, const char *name,
  58                                     void *opaque, Error **errp)
  59{
  60    CPUCore *core = CPU_CORE(obj);
  61    Error *local_err = NULL;
  62    int64_t value;
  63
  64    visit_type_int(v, name, &value, &local_err);
  65    if (local_err) {
  66        error_propagate(errp, local_err);
  67        return;
  68    }
  69
  70    core->nr_threads = value;
  71}
  72
  73static void cpu_core_instance_init(Object *obj)
  74{
  75    MachineState *ms = MACHINE(qdev_get_machine());
  76    CPUCore *core = CPU_CORE(obj);
  77
  78    object_property_add(obj, "core-id", "int", core_prop_get_core_id,
  79                        core_prop_set_core_id, NULL, NULL, NULL);
  80    object_property_add(obj, "nr-threads", "int", core_prop_get_nr_threads,
  81                        core_prop_set_nr_threads, NULL, NULL, NULL);
  82    core->nr_threads = ms->smp.threads;
  83}
  84
  85static void cpu_core_class_init(ObjectClass *oc, void *data)
  86{
  87    DeviceClass *dc = DEVICE_CLASS(oc);
  88
  89    set_bit(DEVICE_CATEGORY_CPU, dc->categories);
  90}
  91
  92static const TypeInfo cpu_core_type_info = {
  93    .name = TYPE_CPU_CORE,
  94    .parent = TYPE_DEVICE,
  95    .abstract = true,
  96    .class_init = cpu_core_class_init,
  97    .instance_size = sizeof(CPUCore),
  98    .instance_init = cpu_core_instance_init,
  99};
 100
 101static void cpu_core_register_types(void)
 102{
 103    type_register_static(&cpu_core_type_info);
 104}
 105
 106type_init(cpu_core_register_types)
 107