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     core->core_id = value;
  37 }
  38
  39 static void core_prop_get_nr_threads(Object *obj, Visitor *v, const char *name,
  40                                      void *opaque, Error **errp)
  41 {
  42     CPUCore *core = CPU_CORE(obj);
  43     int64_t value = core->nr_threads;
  44
  45     visit_type_int(v, name, &value, errp);
  46 }
  47
  48 static void core_prop_set_nr_threads(Object *obj, Visitor *v, const char *name,
  49                                      void *opaque, Error **errp)
  50 {
  51     CPUCore *core = CPU_CORE(obj);
  52     Error *local_err = NULL;
  53     int64_t value;
  54
  55     visit_type_int(v, name, &value, &local_err);
  56     if (local_err) {
  57         error_propagate(errp, local_err);
  58         return;
  59     }
  60
  61     core->nr_threads = value;
  62 }
  63
  64 static void cpu_core_instance_init(Object *obj)
  65 {
  66     CPUCore *core = CPU_CORE(obj);
  67
  68     object_property_add(obj, "core-id", "int", core_prop_get_core_id,
  69                         core_prop_set_core_id, NULL, NULL, NULL);
  70     object_property_add(obj, "nr-threads", "int", core_prop_get_nr_threads,
  71                         core_prop_set_nr_threads, NULL, NULL, NULL);
  72     core->nr_threads = smp_threads;
  73 }
  74
  75 static void cpu_core_class_init(ObjectClass *oc, void *data)
  76 {
  77     DeviceClass *dc = DEVICE_CLASS(oc);
  78
  79     set_bit(DEVICE_CATEGORY_CPU, dc->categories);
  80 }
  81
  82 static const TypeInfo cpu_core_type_info = {
  83     .name = TYPE_CPU_CORE,
  84     .parent = TYPE_DEVICE,
  85     .abstract = true,
  86     .class_init = cpu_core_class_init,
  87     .instance_size = sizeof(CPUCore),
  88     .instance_init = cpu_core_instance_init,
  89 };
  90
  91 static void cpu_core_register_types(void)
  92 {
  93     type_register_static(&cpu_core_type_info);
  94 }
  95
  96 type_init(cpu_core_register_types)