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hw/intc/loongarch_extioi: Add basic hotplug framework

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LoongArch extioi interrupt controller routes peripheral interrupt
to multiple CPUs, physical cpu id is used in interrupt routing table.
Here hotplug interface is added for extioi object, so that parent irq
line can be connected, and routing table can be added for new created
cpu.

Here only basic hotplug framework is added, it is stub function.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
This commit is contained in:
Bibo Mao 2025-01-10 15:35:24 +08:00
parent 8b4b668f6a
commit e45c96b7d6
1 changed files with 33 additions and 0 deletions
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33
hw/intc/loongarch_extioi_common.c
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@ -4,11 +4,37 @@
* Copyright (C) 2024 Loongson Technology Corporation Limited
*/
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qapi/error.h"
#include "hw/qdev-properties.h"
#include "hw/intc/loongarch_extioi_common.h"
#include "migration/vmstate.h"
#include "target/loongarch/cpu.h"
static void loongarch_extioi_cpu_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
Object *obj = OBJECT(dev);
if (!object_dynamic_cast(obj, TYPE_LOONGARCH_CPU)) {
warn_report("LoongArch extioi: Invalid %s device type",
object_get_typename(obj));
return;
}
}
static void loongarch_extioi_cpu_unplug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
Object *obj = OBJECT(dev);
if (!object_dynamic_cast(obj, TYPE_LOONGARCH_CPU)) {
warn_report("LoongArch extioi: Invalid %s device type",
object_get_typename(obj));
return;
}
}
static void loongarch_extioi_common_realize(DeviceState *dev, Error **errp)
{
@ -107,11 +133,14 @@ static void loongarch_extioi_common_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
LoongArchExtIOICommonClass *lecc = LOONGARCH_EXTIOI_COMMON_CLASS(klass);
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
device_class_set_parent_realize(dc, loongarch_extioi_common_realize,
&lecc->parent_realize);
device_class_set_props(dc, extioi_properties);
dc->vmsd = &vmstate_loongarch_extioi;
hc->plug = loongarch_extioi_cpu_plug;
hc->unplug = loongarch_extioi_cpu_unplug;
}
static const TypeInfo loongarch_extioi_common_types[] = {
@ -121,6 +150,10 @@ static const TypeInfo loongarch_extioi_common_types[] = {
.instance_size = sizeof(LoongArchExtIOICommonState),
.class_size = sizeof(LoongArchExtIOICommonClass),
.class_init = loongarch_extioi_common_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_HOTPLUG_HANDLER },
{ }
},
.abstract = true,
}
};