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spapr: Introduce sPAPRCPUCoreClass 

Each spapr cpu core type defines an instance_init routine which just
populates the CPU class name. This can be done in the class_init
commonly for all core types which simplifies the registration.
This is inspired by how PowerNV core types are registered.

Certain types of spapr cpu cores ('host' and generic type based on host
CPU) are initialized in target-ppc/kvm.c. To convert these type
registrations to use class_init, we need to expose
spapr_cpu_core_class_init() outside of spapr_cpu_core.c.

Commit d11b268e17 added a generic sPAPR CPU core family
type to support cases like POWER8 CPU type on POWER8E host CPU.
Switching to class_init would fix such scenarios to use the right
CPU thread type instead of defaulting to host-powerpc64-cpu.

In an unrelated cleanup, fix a typo in .get_hotplug_handler routine.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Bharata B Rao 2016-09-12 13:27:20 +05:30 committed by David Gibson
parent fec5c62a64
commit 7ebaf79556
4 changed files with 56 additions and 85 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
hw/ppc/spapr.c
View File

@ -2312,8 +2312,8 @@ static void spapr_machine_device_pre_plug(HotplugHandler *hotplug_dev,
}
}
static HotplugHandler *spapr_get_hotpug_handler(MachineState *machine,
DeviceState *dev)
static HotplugHandler *spapr_get_hotplug_handler(MachineState *machine,
DeviceState *dev)
{
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) ||
object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) {
@ -2385,7 +2385,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
mc->kvm_type = spapr_kvm_type;
mc->has_dynamic_sysbus = true;
mc->pci_allow_0_address = true;
mc->get_hotplug_handler = spapr_get_hotpug_handler;
mc->get_hotplug_handler = spapr_get_hotplug_handler;
hc->pre_plug = spapr_machine_device_pre_plug;
hc->plug = spapr_machine_device_plug;
hc->unplug = spapr_machine_device_unplug;

102
hw/ppc/spapr_cpu_core.c
View File

@ -112,7 +112,8 @@ char *spapr_get_cpu_core_type(const char *model)
static void spapr_core_release(DeviceState *dev, void *opaque)
{
sPAPRCPUCore *sc = SPAPR_CPU_CORE(OBJECT(dev));
const char *typename = object_class_get_name(sc->cpu_class);
sPAPRCPUCoreClass *scc = SPAPR_CPU_CORE_GET_CLASS(OBJECT(dev));
const char *typename = object_class_get_name(scc->cpu_class);
size_t size = object_type_get_instance_size(typename);
sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
CPUCore *cc = CPU_CORE(dev);
@ -287,8 +288,9 @@ static void spapr_cpu_core_realize_child(Object *child, Error **errp)
static void spapr_cpu_core_realize(DeviceState *dev, Error **errp)
{
sPAPRCPUCore *sc = SPAPR_CPU_CORE(OBJECT(dev));
sPAPRCPUCoreClass *scc = SPAPR_CPU_CORE_GET_CLASS(OBJECT(dev));
CPUCore *cc = CPU_CORE(OBJECT(dev));
const char *typename = object_class_get_name(sc->cpu_class);
const char *typename = object_class_get_name(scc->cpu_class);
size_t size = object_type_get_instance_size(typename);
Error *local_err = NULL;
void *obj;
@ -331,83 +333,43 @@ err:
error_propagate(errp, local_err);
}
static void spapr_cpu_core_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = spapr_cpu_core_realize;
}
/*
* instance_init routines from different flavours of sPAPR CPU cores.
*/
#define SPAPR_CPU_CORE_INITFN(_type, _fname) \
static void glue(glue(spapr_cpu_core_, _fname), _initfn(Object *obj)) \
{ \
sPAPRCPUCore *core = SPAPR_CPU_CORE(obj); \
char *name = g_strdup_printf("%s-" TYPE_POWERPC_CPU, stringify(_type)); \
ObjectClass *oc = object_class_by_name(name); \
g_assert(oc); \
g_free((void *)name); \
core->cpu_class = oc; \
}
SPAPR_CPU_CORE_INITFN(970mp_v1.0, 970MP_v10);
SPAPR_CPU_CORE_INITFN(970mp_v1.1, 970MP_v11);
SPAPR_CPU_CORE_INITFN(970_v2.2, 970);
SPAPR_CPU_CORE_INITFN(POWER5+_v2.1, POWER5plus);
SPAPR_CPU_CORE_INITFN(POWER7_v2.3, POWER7);
SPAPR_CPU_CORE_INITFN(POWER7+_v2.1, POWER7plus);
SPAPR_CPU_CORE_INITFN(POWER8_v2.0, POWER8);
SPAPR_CPU_CORE_INITFN(POWER8E_v2.1, POWER8E);
SPAPR_CPU_CORE_INITFN(POWER8NVL_v1.0, POWER8NVL);
typedef struct SPAPRCoreInfo {
const char *name;
void (*initfn)(Object *obj);
} SPAPRCoreInfo;
static const SPAPRCoreInfo spapr_cores[] = {
static const char *spapr_core_models[] = {
/* 970 */
{ .name = "970_v2.2", .initfn = spapr_cpu_core_970_initfn },
"970_v2.2",
/* 970MP variants */
{ .name = "970MP_v1.0", .initfn = spapr_cpu_core_970MP_v10_initfn },
{ .name = "970mp_v1.0", .initfn = spapr_cpu_core_970MP_v10_initfn },
{ .name = "970MP_v1.1", .initfn = spapr_cpu_core_970MP_v11_initfn },
{ .name = "970mp_v1.1", .initfn = spapr_cpu_core_970MP_v11_initfn },
"970MP_v1.0",
"970mp_v1.0",
"970MP_v1.1",
"970mp_v1.1",
/* POWER5+ */
{ .name = "POWER5+_v2.1", .initfn = spapr_cpu_core_POWER5plus_initfn },
"POWER5+_v2.1",
/* POWER7 */
{ .name = "POWER7_v2.3", .initfn = spapr_cpu_core_POWER7_initfn },
"POWER7_v2.3",
/* POWER7+ */
{ .name = "POWER7+_v2.1", .initfn = spapr_cpu_core_POWER7plus_initfn },
"POWER7+_v2.1",
/* POWER8 */
{ .name = "POWER8_v2.0", .initfn = spapr_cpu_core_POWER8_initfn },
"POWER8_v2.0",
/* POWER8E */
{ .name = "POWER8E_v2.1", .initfn = spapr_cpu_core_POWER8E_initfn },
"POWER8E_v2.1",
/* POWER8NVL */
{ .name = "POWER8NVL_v1.0", .initfn = spapr_cpu_core_POWER8NVL_initfn },
{ .name = NULL }
"POWER8NVL_v1.0",
};
static void spapr_cpu_core_register(const SPAPRCoreInfo *info)
void spapr_cpu_core_class_init(ObjectClass *oc, void *data)
{
TypeInfo type_info = {
.parent = TYPE_SPAPR_CPU_CORE,
.instance_size = sizeof(sPAPRCPUCore),
.instance_init = info->initfn,
};
DeviceClass *dc = DEVICE_CLASS(oc);
sPAPRCPUCoreClass *scc = SPAPR_CPU_CORE_CLASS(oc);
type_info.name = g_strdup_printf("%s-" TYPE_SPAPR_CPU_CORE, info->name);
type_register(&type_info);
g_free((void *)type_info.name);
dc->realize = spapr_cpu_core_realize;
scc->cpu_class = cpu_class_by_name(TYPE_POWERPC_CPU, data);
g_assert(scc->cpu_class);
}
static const TypeInfo spapr_cpu_core_type_info = {
@ -415,17 +377,27 @@ static const TypeInfo spapr_cpu_core_type_info = {
.parent = TYPE_CPU_CORE,
.abstract = true,
.instance_size = sizeof(sPAPRCPUCore),
.class_init = spapr_cpu_core_class_init,
.class_size = sizeof(sPAPRCPUCoreClass),
};
static void spapr_cpu_core_register_types(void)
{
const SPAPRCoreInfo *info = spapr_cores;
int i;
type_register_static(&spapr_cpu_core_type_info);
while (info->name) {
spapr_cpu_core_register(info);
info++;
for (i = 0; i < ARRAY_SIZE(spapr_core_models); i++) {
TypeInfo type_info = {
.parent = TYPE_SPAPR_CPU_CORE,
.instance_size = sizeof(sPAPRCPUCore),
.class_init = spapr_cpu_core_class_init,
.class_data = (void *) spapr_core_models[i],
};
type_info.name = g_strdup_printf("%s-" TYPE_SPAPR_CPU_CORE,
spapr_core_models[i]);
type_register(&type_info);
g_free((void *)type_info.name);
}
}

11
include/hw/ppc/spapr_cpu_core.h
View File

@ -16,6 +16,10 @@
#define TYPE_SPAPR_CPU_CORE "spapr-cpu-core"
#define SPAPR_CPU_CORE(obj) \
OBJECT_CHECK(sPAPRCPUCore, (obj), TYPE_SPAPR_CPU_CORE)
#define SPAPR_CPU_CORE_CLASS(klass) \
OBJECT_CLASS_CHECK(sPAPRCPUCoreClass, (klass), TYPE_SPAPR_CPU_CORE)
#define SPAPR_CPU_CORE_GET_CLASS(obj) \
OBJECT_GET_CLASS(sPAPRCPUCoreClass, (obj), TYPE_SPAPR_CPU_CORE)
typedef struct sPAPRCPUCore {
/*< private >*/
@ -23,9 +27,13 @@ typedef struct sPAPRCPUCore {
/*< public >*/
void *threads;
ObjectClass *cpu_class;
} sPAPRCPUCore;
typedef struct sPAPRCPUCoreClass {
DeviceClass parent_class;
ObjectClass *cpu_class;
} sPAPRCPUCoreClass;
void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp);
char *spapr_get_cpu_core_type(const char *model);
@ -33,4 +41,5 @@ void spapr_core_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp);
void spapr_core_unplug(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp);
void spapr_cpu_core_class_init(ObjectClass *oc, void *data);
#endif

22
target-ppc/kvm.c
View File

@ -36,6 +36,7 @@
#include "hw/sysbus.h"
#include "hw/ppc/spapr.h"
#include "hw/ppc/spapr_vio.h"
#include "hw/ppc/spapr_cpu_core.h"
#include "hw/ppc/ppc.h"
#include "sysemu/watchdog.h"
#include "trace.h"
@ -2364,19 +2365,6 @@ PowerPCCPUClass *kvm_ppc_get_host_cpu_class(void)
return pvr_pcc;
}
#if defined(TARGET_PPC64)
static void spapr_cpu_core_host_initfn(Object *obj)
{
sPAPRCPUCore *core = SPAPR_CPU_CORE(obj);
char *name = g_strdup_printf("%s-" TYPE_POWERPC_CPU, "host");
ObjectClass *oc = object_class_by_name(name);
g_assert(oc);
g_free((void *)name);
core->cpu_class = oc;
}
#endif
static int kvm_ppc_register_host_cpu_type(void)
{
TypeInfo type_info = {
@ -2404,14 +2392,16 @@ static int kvm_ppc_register_host_cpu_type(void)
#if defined(TARGET_PPC64)
type_info.name = g_strdup_printf("%s-"TYPE_SPAPR_CPU_CORE, "host");
type_info.parent = TYPE_SPAPR_CPU_CORE,
type_info.instance_size = sizeof(sPAPRCPUCore),
type_info.instance_init = spapr_cpu_core_host_initfn,
type_info.class_init = NULL;
type_info.instance_size = sizeof(sPAPRCPUCore);
type_info.instance_init = NULL;
type_info.class_init = spapr_cpu_core_class_init;
type_info.class_data = (void *) "host";
type_register(&type_info);
g_free((void *)type_info.name);
/* Register generic spapr CPU family class for current host CPU type */
type_info.name = g_strdup_printf("%s-"TYPE_SPAPR_CPU_CORE, dc->desc);
type_info.class_data = (void *) dc->desc;
type_register(&type_info);
g_free((void *)type_info.name);
#endif