mirror of https://gitee.com/openkylin/qemu.git
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/*
|
|
* CPU core abstract device
|
|
*
|
|
* Copyright (C) 2016 Bharata B Rao <bharata@linux.vnet.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/cpu/core.h"
|
|
#include "qapi/visitor.h"
|
|
#include "qemu/module.h"
|
|
#include "qapi/error.h"
|
|
#include "sysemu/cpus.h"
|
|
#include "hw/boards.h"
|
|
|
|
static void core_prop_get_core_id(Object *obj, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
CPUCore *core = CPU_CORE(obj);
|
|
int64_t value = core->core_id;
|
|
|
|
visit_type_int(v, name, &value, errp);
|
|
}
|
|
|
|
static void core_prop_set_core_id(Object *obj, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
CPUCore *core = CPU_CORE(obj);
|
|
int64_t value;
|
|
|
|
if (!visit_type_int(v, name, &value, errp)) {
|
|
return;
|
|
}
|
|
|
|
if (value < 0) {
|
|
error_setg(errp, "Invalid core id %"PRId64, value);
|
|
return;
|
|
}
|
|
|
|
core->core_id = value;
|
|
}
|
|
|
|
static void core_prop_get_nr_threads(Object *obj, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
CPUCore *core = CPU_CORE(obj);
|
|
int64_t value = core->nr_threads;
|
|
|
|
visit_type_int(v, name, &value, errp);
|
|
}
|
|
|
|
static void core_prop_set_nr_threads(Object *obj, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
CPUCore *core = CPU_CORE(obj);
|
|
int64_t value;
|
|
|
|
if (!visit_type_int(v, name, &value, errp)) {
|
|
return;
|
|
}
|
|
|
|
core->nr_threads = value;
|
|
}
|
|
|
|
static void cpu_core_instance_init(Object *obj)
|
|
{
|
|
CPUCore *core = CPU_CORE(obj);
|
|
|
|
/*
|
|
* Only '-device something-cpu-core,help' can get us there before
|
|
* the machine has been created. We don't care to set nr_threads
|
|
* in this case since it isn't used afterwards.
|
|
*/
|
|
if (current_machine) {
|
|
core->nr_threads = current_machine->smp.threads;
|
|
}
|
|
}
|
|
|
|
static void cpu_core_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(oc);
|
|
|
|
set_bit(DEVICE_CATEGORY_CPU, dc->categories);
|
|
object_class_property_add(oc, "core-id", "int", core_prop_get_core_id,
|
|
core_prop_set_core_id, NULL, NULL);
|
|
object_class_property_add(oc, "nr-threads", "int", core_prop_get_nr_threads,
|
|
core_prop_set_nr_threads, NULL, NULL);
|
|
}
|
|
|
|
static const TypeInfo cpu_core_type_info = {
|
|
.name = TYPE_CPU_CORE,
|
|
.parent = TYPE_DEVICE,
|
|
.abstract = true,
|
|
.class_init = cpu_core_class_init,
|
|
.instance_size = sizeof(CPUCore),
|
|
.instance_init = cpu_core_instance_init,
|
|
};
|
|
|
|
static void cpu_core_register_types(void)
|
|
{
|
|
type_register_static(&cpu_core_type_info);
|
|
}
|
|
|
|
type_init(cpu_core_register_types)
|