xref: /openbmc/qemu/hw/intc/s390_flic.c (revision 7b35d0c44cae3dcce6347a0729a416c2929cd4bb)
1 /*
2  * QEMU S390x floating interrupt controller (flic)
3  *
4  * Copyright 2014 IBM Corp.
5  * Author(s): Jens Freimann <jfrei@linux.vnet.ibm.com>
6  *            Cornelia Huck <cornelia.huck@de.ibm.com>
7  *
8  * This work is licensed under the terms of the GNU GPL, version 2 or (at
9  * your option) any later version. See the COPYING file in the top-level
10  * directory.
11  */
12 
13 #include "qemu/error-report.h"
14 #include "hw/sysbus.h"
15 #include "migration/qemu-file.h"
16 #include "hw/s390x/s390_flic.h"
17 #include "trace.h"
18 
19 S390FLICState *s390_get_flic(void)
20 {
21     S390FLICState *fs;
22 
23     fs = S390_FLIC_COMMON(object_resolve_path(TYPE_KVM_S390_FLIC, NULL));
24     if (!fs) {
25         fs = S390_FLIC_COMMON(object_resolve_path(TYPE_QEMU_S390_FLIC, NULL));
26     }
27     return fs;
28 }
29 
30 void s390_flic_init(void)
31 {
32     DeviceState *dev;
33     int r;
34 
35     dev = s390_flic_kvm_create();
36     if (!dev) {
37         dev = qdev_create(NULL, TYPE_QEMU_S390_FLIC);
38         object_property_add_child(qdev_get_machine(), TYPE_QEMU_S390_FLIC,
39                                   OBJECT(dev), NULL);
40     }
41     r = qdev_init(dev);
42     if (r) {
43         error_report("flic: couldn't create qdev");
44     }
45 }
46 
47 static const TypeInfo qemu_s390_flic_info = {
48     .name          = TYPE_QEMU_S390_FLIC,
49     .parent        = TYPE_S390_FLIC_COMMON,
50     .instance_size = sizeof(QEMUS390FLICState),
51 };
52 
53 static const TypeInfo s390_flic_common_info = {
54     .name          = TYPE_S390_FLIC_COMMON,
55     .parent        = TYPE_SYS_BUS_DEVICE,
56     .instance_size = sizeof(S390FLICState),
57     .class_size    = sizeof(S390FLICStateClass),
58 };
59 
60 static void qemu_s390_flic_register_types(void)
61 {
62     type_register_static(&s390_flic_common_info);
63     type_register_static(&qemu_s390_flic_info);
64 }
65 
66 type_init(qemu_s390_flic_register_types)
67