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9eccb8622c
According to the platform specification, under certain conditions, pending IO interruptions have to be cleared. Let's add an interface for that. Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
/*
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* QEMU S390x floating interrupt controller (flic)
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*
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* Copyright 2014 IBM Corp.
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* Author(s): Jens Freimann <jfrei@linux.vnet.ibm.com>
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* Cornelia Huck <cornelia.huck@de.ibm.com>
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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 "qemu/error-report.h"
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#include "hw/sysbus.h"
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#include "migration/qemu-file.h"
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#include "hw/s390x/s390_flic.h"
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#include "trace.h"
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S390FLICState *s390_get_flic(void)
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{
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S390FLICState *fs;
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fs = S390_FLIC_COMMON(object_resolve_path(TYPE_KVM_S390_FLIC, NULL));
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if (!fs) {
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fs = S390_FLIC_COMMON(object_resolve_path(TYPE_QEMU_S390_FLIC, NULL));
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}
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return fs;
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}
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void s390_flic_init(void)
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{
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DeviceState *dev;
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dev = s390_flic_kvm_create();
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if (!dev) {
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dev = qdev_create(NULL, TYPE_QEMU_S390_FLIC);
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object_property_add_child(qdev_get_machine(), TYPE_QEMU_S390_FLIC,
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OBJECT(dev), NULL);
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}
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qdev_init_nofail(dev);
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}
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static int qemu_s390_register_io_adapter(S390FLICState *fs, uint32_t id,
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uint8_t isc, bool swap,
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bool is_maskable)
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{
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/* nothing to do */
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return 0;
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}
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static int qemu_s390_io_adapter_map(S390FLICState *fs, uint32_t id,
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uint64_t map_addr, bool do_map)
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{
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/* nothing to do */
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return 0;
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}
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static int qemu_s390_add_adapter_routes(S390FLICState *fs,
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AdapterRoutes *routes)
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{
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return -ENOSYS;
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}
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static void qemu_s390_release_adapter_routes(S390FLICState *fs,
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AdapterRoutes *routes)
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{
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}
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static int qemu_s390_clear_io_flic(S390FLICState *fs, uint16_t subchannel_id,
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uint16_t subchannel_nr)
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{
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/* Fixme TCG */
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return -ENOSYS;
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}
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static void qemu_s390_flic_class_init(ObjectClass *oc, void *data)
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{
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S390FLICStateClass *fsc = S390_FLIC_COMMON_CLASS(oc);
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fsc->register_io_adapter = qemu_s390_register_io_adapter;
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fsc->io_adapter_map = qemu_s390_io_adapter_map;
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fsc->add_adapter_routes = qemu_s390_add_adapter_routes;
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fsc->release_adapter_routes = qemu_s390_release_adapter_routes;
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fsc->clear_io_irq = qemu_s390_clear_io_flic;
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}
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static const TypeInfo qemu_s390_flic_info = {
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.name = TYPE_QEMU_S390_FLIC,
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.parent = TYPE_S390_FLIC_COMMON,
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.instance_size = sizeof(QEMUS390FLICState),
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.class_init = qemu_s390_flic_class_init,
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};
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static const TypeInfo s390_flic_common_info = {
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.name = TYPE_S390_FLIC_COMMON,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(S390FLICState),
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.class_size = sizeof(S390FLICStateClass),
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};
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static void qemu_s390_flic_register_types(void)
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{
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type_register_static(&s390_flic_common_info);
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type_register_static(&qemu_s390_flic_info);
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}
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type_init(qemu_s390_flic_register_types)
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