[Qemu-devel] [RFC PATCH v0 4/9] cpu: CPU socket backend

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

Backend object for CPU socket.

TODO: Prevent creation of socket objects beyond what is needed by
max_cpus so that all the required socket objects are pre-created
and user can't ever add a socket slot.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
---
 hw/cpu/Makefile.objs    |  1 +
 hw/cpu/socket.c         | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 include/hw/cpu/socket.h | 26 ++++++++++++++++++++++++++
 3 files changed, 75 insertions(+)
 create mode 100644 hw/cpu/socket.c
 create mode 100644 include/hw/cpu/socket.h

diff --git a/hw/cpu/Makefile.objs b/hw/cpu/Makefile.objs
index 0954a18..93d1226 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 += socket.o
 
diff --git a/hw/cpu/socket.c b/hw/cpu/socket.c
new file mode 100644
index 0000000..e0a2af9
--- /dev/null
+++ b/hw/cpu/socket.c
@@ -0,0 +1,48 @@
+/*
+ * CPU socket backend
+ *
+ * Copyright (C) 2015 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/socket.h"
+#include "qom/object_interfaces.h"
+
+static bool cpu_socket_can_be_deleted(UserCreatable *uc, Error **errp)
+{
+    return false;
+}
+
+static void cpu_socket_class_init(ObjectClass *oc, void *data)
+{
+    UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
+
+    ucc->can_be_deleted = cpu_socket_can_be_deleted;
+}
+
+static void cpu_socket_instance_init(Object *obj)
+{
+    CPUSocket *socket = CPU_SOCKET(obj);
+
+    socket->nr_cores = 0;
+}
+
+static const TypeInfo cpu_socket_info = {
+    .name = TYPE_CPU_SOCKET,
+    .parent = TYPE_OBJECT,
+    .instance_init = cpu_socket_instance_init,
+    .instance_size = sizeof(CPUSocket),
+    .class_init = cpu_socket_class_init,
+    .interfaces = (InterfaceInfo[]) {
+        { TYPE_USER_CREATABLE },
+        { }
+    }
+};
+
+static void cpu_socket_register_types(void)
+{
+    type_register_static(&cpu_socket_info);
+}
+
+type_init(cpu_socket_register_types)
diff --git a/include/hw/cpu/socket.h b/include/hw/cpu/socket.h
new file mode 100644
index 0000000..ff29367
--- /dev/null
+++ b/include/hw/cpu/socket.h
@@ -0,0 +1,26 @@
+/*
+ * CPU socket backend
+ *
+ * Copyright (C) 2015 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_SOCKET_H
+#define HW_CPU_SOCKET_H
+
+#include "hw/qdev.h"
+
+#define TYPE_CPU_SOCKET "cpu-socket"
+#define CPU_SOCKET(obj) \
+    OBJECT_CHECK(CPUSocket, (obj), TYPE_CPU_SOCKET)
+
+typedef struct CPUSocket {
+    /* private */
+    Object parent;
+
+    /* public */
+    int nr_cores;
+} CPUSocket;
+
+#endif
-- 
2.1.0