Archipelago » qemu

/* 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, "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)