Add an abstract CPU core type that could be used by machines that want
to define and hotplug CPUs in core granularity.
Signed-off-by: Bharata B Rao <bhar...@linux.vnet.ibm.com>
Signed-off-by: Igor Mammedov <imamm...@redhat.com>
[Integer core property]
Reviewed-by: David Gibson <da...@gibson.dropbear.id.au>
---
hw/cpu/Makefile.objs | 1 +
hw/cpu/core.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++
include/hw/cpu/core.h | 31 ++++++++++++++++++
3 files changed, 119 insertions(+)
create mode 100644 hw/cpu/core.c
create mode 100644 include/hw/cpu/core.h
diff --git a/hw/cpu/Makefile.objs b/hw/cpu/Makefile.objs
index 0954a18..942a4bb 100644
--- a/hw/cpu/Makefile.objs
+++ b/hw/cpu/Makefile.objs
@@ -2,4 +2,5 @@ obj-$(CONFIG_ARM11MPCORE) += arm11mpcore.o
obj-$(CONFIG_REALVIEW) += realview_mpcore.o
obj-$(CONFIG_A9MPCORE) += a9mpcore.o
obj-$(CONFIG_A15MPCORE) += a15mpcore.o
+obj-y += core.o
diff --git a/hw/cpu/core.c b/hw/cpu/core.c
new file mode 100644
index 0000000..3faf53d
--- /dev/null
+++ b/hw/cpu/core.c
@@ -0,0 +1,87 @@
+/*
+ * CPU core abstract device
+ *
+ * Copyright (C) 2016 Bharata B Rao <bhar...@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 "hw/cpu/core.h"
+#include "qapi/visitor.h"
+#include "sysemu/cpus.h"
+
+static void core_prop_get_core(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ CPUCore *core = CPU_CORE(obj);
+ int64_t value = core->core;
+
+ visit_type_int(v, name, &value, errp);
+}
+
+static void core_prop_set_core(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ CPUCore *core = CPU_CORE(obj);
+ Error *local_err = NULL;
+ int64_t value;
+
+ visit_type_int(v, name, &value, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ core->core = value;
+}
+
+static void core_prop_get_threads(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ CPUCore *core = CPU_CORE(obj);
+ int64_t value = core->threads;
+
+ visit_type_int(v, name, &value, errp);
+}
+
+static void core_prop_set_threads(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ CPUCore *core = CPU_CORE(obj);
+ Error *local_err = NULL;
+ int64_t value;
+
+ visit_type_int(v, name, &value, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ core->threads = value;
+}
+
+static void cpu_core_instance_init(Object *obj)
+{
+ CPUCore *core = CPU_CORE(obj);
+
+ object_property_add(obj, "core", "int", core_prop_get_core,
+ core_prop_set_core, NULL, NULL, NULL);
+ object_property_add(obj, "threads", "int", core_prop_get_threads,
+ core_prop_set_threads, NULL, NULL, NULL);
+ core->threads = smp_threads;
+}
+
+static const TypeInfo cpu_core_type_info = {
+ .name = TYPE_CPU_CORE,
+ .parent = TYPE_DEVICE,
+ .abstract = true,
+ .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)
diff --git a/include/hw/cpu/core.h b/include/hw/cpu/core.h
new file mode 100644
index 0000000..a2a5a04
--- /dev/null
+++ b/include/hw/cpu/core.h
@@ -0,0 +1,31 @@
+/*
+ * CPU core abstract device
+ *
+ * Copyright (C) 2016 Bharata B Rao <bhar...@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.
+ */
+#ifndef HW_CPU_CORE_H
+#define HW_CPU_CORE_H
+
+#include "qemu/osdep.h"
+#include "hw/qdev.h"
+
+#define TYPE_CPU_CORE "cpu-core"
+
+#define CPU_CORE(obj) \
+ OBJECT_CHECK(CPUCore, (obj), TYPE_CPU_CORE)
+
+typedef struct CPUCore {
+ /*< private >*/
+ DeviceState parent_obj;
+
+ /*< public >*/
+ int core;
+ int threads;
+} CPUCore;
+
+#define CPU_CORE_PROP_CORE "core"
+
+#endif
--
2.1.0
