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hw/loongarch: Add hotplug handler for machine 

Add hotplug handler for LoongArch virt machine and now only support
the dynamic sysbus device.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220908094623.73051-6-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
master
Xiaojuan Yang 2022-08-10 16:37:21 +08:00 committed by Song Gao
parent a1f7d78e56
commit e27e535768
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GPG Key ID: 40A2FFF239263EDF
1 changed files with 32 additions and 0 deletions
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32
hw/loongarch/virt.c
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@ -803,9 +803,35 @@ static void loongarch_machine_initfn(Object *obj)
lams->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
}
static void loongarch_machine_device_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev);
MachineClass *mc = MACHINE_GET_CLASS(lams);
if (device_is_dynamic_sysbus(mc, dev)) {
if (lams->platform_bus_dev) {
platform_bus_link_device(PLATFORM_BUS_DEVICE(lams->platform_bus_dev),
SYS_BUS_DEVICE(dev));
}
}
}
static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine,
DeviceState *dev)
{
MachineClass *mc = MACHINE_GET_CLASS(machine);
if (device_is_dynamic_sysbus(mc, dev)) {
return HOTPLUG_HANDLER(machine);
}
return NULL;
}
static void loongarch_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
mc->desc = "Loongson-3A5000 LS7A1000 machine";
mc->init = loongarch_init;
@ -818,6 +844,8 @@ static void loongarch_class_init(ObjectClass *oc, void *data)
mc->block_default_type = IF_VIRTIO;
mc->default_boot_order = "c";
mc->no_cdrom = 1;
mc->get_hotplug_handler = virt_machine_get_hotplug_handler;
hc->plug = loongarch_machine_device_plug_cb;
object_class_property_add(oc, "acpi", "OnOffAuto",
loongarch_get_acpi, loongarch_set_acpi,
@ -833,6 +861,10 @@ static const TypeInfo loongarch_machine_types[] = {
.instance_size = sizeof(LoongArchMachineState),
.class_init = loongarch_class_init,
.instance_init = loongarch_machine_initfn,
.interfaces = (InterfaceInfo[]) {
{ TYPE_HOTPLUG_HANDLER },
{ }
},
}
};