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authorBharata B Rao <bharata@linux.vnet.ibm.com>2016-05-12 09:18:16 +0530
committerDavid Gibson <david@gibson.dropbear.id.au>2016-06-17 16:33:48 +1000
commitf1020c2c2647a62df870ce243424ee23ea95ae6f (patch)
treee683477464517ee2c5bcb18e6548483ce439bfef /hw/cpu
parent41346263c4039fd2edca61c031c9396577693036 (diff)
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cpu: Abstract CPU core type
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> Signed-off-by: Igor Mammedov <imammedo@redhat.com> [Integer core property] Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Igor Mammedov <imammedo@redhat.com> [dwg: changed property names to 'core-id' and 'nr-threads'] Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/cpu')
-rw-r--r--hw/cpu/Makefile.objs1
-rw-r--r--hw/cpu/core.c88
2 files changed, 89 insertions, 0 deletions
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..eff90c1
--- /dev/null
+++ b/hw/cpu/core.c
@@ -0,0 +1,88 @@
+/*
+ * 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"
+#include "qapi/visitor.h"
+#include "qapi/error.h"
+#include "sysemu/cpus.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);
+ 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_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);
+ 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->nr_threads = value;
+}
+
+static void cpu_core_instance_init(Object *obj)
+{
+ CPUCore *core = CPU_CORE(obj);
+
+ object_property_add(obj, "core-id", "int", core_prop_get_core_id,
+ core_prop_set_core_id, NULL, NULL, NULL);
+ object_property_add(obj, "nr-threads", "int", core_prop_get_nr_threads,
+ core_prop_set_nr_threads, NULL, NULL, NULL);
+ core->nr_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)