jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
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 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
45static 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
54static 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
67static void cpu_core_instance_init(Object *obj)
68{
69 MachineState *ms = MACHINE(qdev_get_machine());
70 CPUCore *core = CPU_CORE(obj);
71
72 object_property_add(obj, "core-id", "int", core_prop_get_core_id,
73 core_prop_set_core_id, NULL, NULL);
74 object_property_add(obj, "nr-threads", "int", core_prop_get_nr_threads,
75 core_prop_set_nr_threads, NULL, NULL);
76 core->nr_threads = ms->smp.threads;
77}
78
79static void cpu_core_class_init(ObjectClass *oc, void *data)
80{
81 DeviceClass *dc = DEVICE_CLASS(oc);
82
83 set_bit(DEVICE_CATEGORY_CPU, dc->categories);
84}
85
86static const TypeInfo cpu_core_type_info = {
87 .name = TYPE_CPU_CORE,
88 .parent = TYPE_DEVICE,
89 .abstract = true,
90 .class_init = cpu_core_class_init,
91 .instance_size = sizeof(CPUCore),
92 .instance_init = cpu_core_instance_init,
93};
94
95static void cpu_core_register_types(void)
96{
97 type_register_static(&cpu_core_type_info);
98}
99
100type_init(cpu_core_register_types)