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