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
  15 static 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
  24 static 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
  45 static 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
  54 static 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
  70 static 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
  81 static 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
  88 static 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
  97 static void cpu_core_register_types(void)
  98 {
  99     type_register_static(&cpu_core_type_info);
 100 }
 101
 102 type_init(cpu_core_register_types)