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