Merge remote-tracking branch 'remotes/jsnow-gitlab/tags/python-pull-request' into...
[qemu.git] / 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
18 static 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
27 static 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 int64_t value;
32
33 if (!visit_type_int(v, name, &value, errp)) {
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 int64_t value;
59
60 if (!visit_type_int(v, name, &value, errp)) {
61 return;
62 }
63
64 core->nr_threads = value;
65 }
66
67 static void cpu_core_instance_init(Object *obj)
68 {
69 CPUCore *core = CPU_CORE(obj);
70
71 /*
72 * Only '-device something-cpu-core,help' can get us there before
73 * the machine has been created. We don't care to set nr_threads
74 * in this case since it isn't used afterwards.
75 */
76 if (current_machine) {
77 core->nr_threads = current_machine->smp.threads;
78 }
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 object_class_property_add(oc, "core-id", "int", core_prop_get_core_id,
87 core_prop_set_core_id, NULL, NULL);
88 object_class_property_add(oc, "nr-threads", "int", core_prop_get_nr_threads,
89 core_prop_set_nr_threads, NULL, NULL);
90 }
91
92 static 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
101 static void cpu_core_register_types(void)
102 {
103 type_register_static(&cpu_core_type_info);
104 }
105
106 type_init(cpu_core_register_types)