hw/intc/s390_flic.c

   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
  34     dev = s390_flic_kvm_create();
  35     if (!dev) {
  36         dev = qdev_create(NULL, TYPE_QEMU_S390_FLIC);
  37         object_property_add_child(qdev_get_machine(), TYPE_QEMU_S390_FLIC,
  38                                   OBJECT(dev), NULL);
  39     }
  40     qdev_init_nofail(dev);
  41 }
  42
  43 static int qemu_s390_register_io_adapter(S390FLICState *fs, uint32_t id,
  44                                          uint8_t isc, bool swap,
  45                                          bool is_maskable)
  46 {
  47     /* nothing to do */
  48     return 0;
  49 }
  50
  51 static int qemu_s390_io_adapter_map(S390FLICState *fs, uint32_t id,
  52                                     uint64_t map_addr, bool do_map)
  53 {
  54     /* nothing to do */
  55     return 0;
  56 }
  57
  58 static int qemu_s390_add_adapter_routes(S390FLICState *fs,
  59                                         AdapterRoutes *routes)
  60 {
  61     return -ENOSYS;
  62 }
  63
  64 static void qemu_s390_release_adapter_routes(S390FLICState *fs,
  65                                              AdapterRoutes *routes)
  66 {
  67 }
  68
  69 static void qemu_s390_flic_class_init(ObjectClass *oc, void *data)
  70 {
  71     S390FLICStateClass *fsc = S390_FLIC_COMMON_CLASS(oc);
  72
  73     fsc->register_io_adapter = qemu_s390_register_io_adapter;
  74     fsc->io_adapter_map = qemu_s390_io_adapter_map;
  75     fsc->add_adapter_routes = qemu_s390_add_adapter_routes;
  76     fsc->release_adapter_routes = qemu_s390_release_adapter_routes;
  77 }
  78
  79 static const TypeInfo qemu_s390_flic_info = {
  80     .name          = TYPE_QEMU_S390_FLIC,
  81     .parent        = TYPE_S390_FLIC_COMMON,
  82     .instance_size = sizeof(QEMUS390FLICState),
  83     .class_init    = qemu_s390_flic_class_init,
  84 };
  85
  86 static const TypeInfo s390_flic_common_info = {
  87     .name          = TYPE_S390_FLIC_COMMON,
  88     .parent        = TYPE_SYS_BUS_DEVICE,
  89     .instance_size = sizeof(S390FLICState),
  90     .class_size    = sizeof(S390FLICStateClass),
  91 };
  92
  93 static void qemu_s390_flic_register_types(void)
  94 {
  95     type_register_static(&s390_flic_common_info);
  96     type_register_static(&qemu_s390_flic_info);
  97 }
  98
  99 type_init(qemu_s390_flic_register_types)