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/* icc_bus.c
* emulate x86 ICC (Interrupt Controller Communications) bus
*
* Copyright (c) 2013 Red Hat, Inc
*
* Authors:
* Igor Mammedov <imammedo@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>
*/
#include "hw/cpu/icc_bus.h"
#include "hw/sysbus.h"
/* icc-bridge implementation */
static void icc_bus_init(Object *obj)
{
BusState *b = BUS(obj);
b->allow_hotplug = true;
}
static const TypeInfo icc_bus_info = {
.name = TYPE_ICC_BUS,
.parent = TYPE_BUS,
.instance_size = sizeof(ICCBus),
.instance_init = icc_bus_init,
};
/* icc-device implementation */
static void icc_device_realize(DeviceState *dev, Error **errp)
{
ICCDevice *id = ICC_DEVICE(dev);
ICCDeviceClass *idc = ICC_DEVICE_GET_CLASS(id);
if (idc->init) {
if (idc->init(id) < 0) {
error_setg(errp, "%s initialization failed.",
object_get_typename(OBJECT(dev)));
}
}
}
static void icc_device_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = icc_device_realize;
dc->bus_type = TYPE_ICC_BUS;
}
static const TypeInfo icc_device_info = {
.name = TYPE_ICC_DEVICE,
.parent = TYPE_DEVICE,
.abstract = true,
.instance_size = sizeof(ICCDevice),
.class_size = sizeof(ICCDeviceClass),
.class_init = icc_device_class_init,
};
/* icc-bridge implementation */
typedef struct ICCBridgeState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
ICCBus icc_bus;
MemoryRegion apic_container;
} ICCBridgeState;
#define ICC_BRIGDE(obj) OBJECT_CHECK(ICCBridgeState, (obj), TYPE_ICC_BRIDGE)
static void icc_bridge_init(Object *obj)
{
ICCBridgeState *s = ICC_BRIGDE(obj);
SysBusDevice *sb = SYS_BUS_DEVICE(obj);
qbus_create_inplace(&s->icc_bus, TYPE_ICC_BUS, DEVICE(s), "icc");
/* Do not change order of registering regions,
* APIC must be first registered region, board maps it by 0 index
*/
memory_region_init(&s->apic_container, NULL, "icc-apic-container",
APIC_SPACE_SIZE);
sysbus_init_mmio(sb, &s->apic_container);
s->icc_bus.apic_address_space = &s->apic_container;
}
static const TypeInfo icc_bridge_info = {
.name = TYPE_ICC_BRIDGE,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_init = icc_bridge_init,
.instance_size = sizeof(ICCBridgeState),
};
static void icc_bus_register_types(void)
{
type_register_static(&icc_bus_info);
type_register_static(&icc_device_info);
type_register_static(&icc_bridge_info);
}
type_init(icc_bus_register_types)
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