79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
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/*
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* ap bridge
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*
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* Copyright 2018 IBM Corp.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/sysbus.h"
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#include "qemu/bitops.h"
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#include "hw/s390x/ap-bridge.h"
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#include "cpu.h"
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static char *ap_bus_get_dev_path(DeviceState *dev)
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{
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/* at most one */
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return g_strdup_printf("/1");
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}
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static void ap_bus_class_init(ObjectClass *oc, void *data)
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{
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BusClass *k = BUS_CLASS(oc);
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k->get_dev_path = ap_bus_get_dev_path;
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/* More than one ap device does not make sense */
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k->max_dev = 1;
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}
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static const TypeInfo ap_bus_info = {
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.name = TYPE_AP_BUS,
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.parent = TYPE_BUS,
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.instance_size = 0,
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.class_init = ap_bus_class_init,
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};
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void s390_init_ap(void)
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{
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DeviceState *dev;
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/* If no AP instructions then no need for AP bridge */
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if (!s390_has_feat(S390_FEAT_AP)) {
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return;
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}
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/* Create bridge device */
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dev = qdev_create(NULL, TYPE_AP_BRIDGE);
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object_property_add_child(qdev_get_machine(), TYPE_AP_BRIDGE,
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OBJECT(dev), NULL);
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qdev_init_nofail(dev);
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/* Create bus on bridge device */
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qbus_create(TYPE_AP_BUS, dev, TYPE_AP_BUS);
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}
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static void ap_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 ap_bridge_info = {
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.name = TYPE_AP_BRIDGE,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = 0,
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.class_init = ap_bridge_class_init,
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};
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static void ap_register(void)
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{
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type_register_static(&ap_bridge_info);
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type_register_static(&ap_bus_info);
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}
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type_init(ap_register)
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