[Qemu-devel] [RFC PATCH v1 05/10] cpu: Abstract CPU core type

[Bharata B Rao <bharata@linux.vnet.ibm.com>]

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 <bharata@linux.vnet.ibm.com>
---
 hw/cpu/Makefile.objs  |  1 +
 hw/cpu/core.c         | 44 ++++++++++++++++++++++++++++++++++++++++++++
 include/hw/cpu/core.h | 30 ++++++++++++++++++++++++++++++
 3 files changed, 75 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..d8caf37
--- /dev/null
+++ b/hw/cpu/core.c
@@ -0,0 +1,44 @@
+/*
+ * 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 "hw/cpu/core.h"
+
+static char *core_prop_get_slot(Object *obj, Error **errp)
+{
+    CPUCore *core = CPU_CORE(obj);
+
+    return g_strdup(core->slot);
+}
+
+static void core_prop_set_slot(Object *obj, const char *val, Error **errp)
+{
+    CPUCore *core = CPU_CORE(obj);
+
+    core->slot = g_strdup(val);
+}
+
+static void cpu_core_instance_init(Object *obj)
+{
+    object_property_add_str(obj, "slot", core_prop_get_slot, core_prop_set_slot,
+                            NULL);
+}
+
+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..2daa724
--- /dev/null
+++ b/include/hw/cpu/core.h
@@ -0,0 +1,30 @@
+/*
+ * 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.
+ */
+#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 >*/
+    char *slot;
+} CPUCore;
+
+#define CPU_CORE_SLOT_PROP "slot"
+
+#endif
-- 
2.1.0