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author | Bharata B Rao <bharata@linux.vnet.ibm.com> | 2016-05-12 09:18:16 +0530 |
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committer | David Gibson <david@gibson.dropbear.id.au> | 2016-06-17 16:33:48 +1000 |
commit | f1020c2c2647a62df870ce243424ee23ea95ae6f (patch) | |
tree | e683477464517ee2c5bcb18e6548483ce439bfef /hw/cpu | |
parent | 41346263c4039fd2edca61c031c9396577693036 (diff) | |
download | qemu-f1020c2c2647a62df870ce243424ee23ea95ae6f.zip qemu-f1020c2c2647a62df870ce243424ee23ea95ae6f.tar.gz qemu-f1020c2c2647a62df870ce243424ee23ea95ae6f.tar.bz2 |
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.objs | 1 | ||||
-rw-r--r-- | hw/cpu/core.c | 88 |
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) |