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     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 int qemu_s390_register_io_adapter(S390FLICState *fs, uint32_t id,
  48                                          uint8_t isc, bool swap,
  49                                          bool is_maskable)
  50 {
  51     /* nothing to do */
  52     return 0;
  53 }
  54
  55 static int qemu_s390_io_adapter_map(S390FLICState *fs, uint32_t id,
  56                                     uint64_t map_addr, bool do_map)
  57 {
  58     /* nothing to do */
  59     return 0;
  60 }
  61
  62 static int qemu_s390_add_adapter_routes(S390FLICState *fs,
  63                                         AdapterRoutes *routes)
  64 {
  65     return -ENOSYS;
  66 }
  67
  68 static void qemu_s390_release_adapter_routes(S390FLICState *fs,
  69                                              AdapterRoutes *routes)
  70 {
  71 }
  72
  73 static void qemu_s390_flic_class_init(ObjectClass *oc, void *data)
  74 {
  75     S390FLICStateClass *fsc = S390_FLIC_COMMON_CLASS(oc);
  76
  77     fsc->register_io_adapter = qemu_s390_register_io_adapter;
  78     fsc->io_adapter_map = qemu_s390_io_adapter_map;
  79     fsc->add_adapter_routes = qemu_s390_add_adapter_routes;
  80     fsc->release_adapter_routes = qemu_s390_release_adapter_routes;
  81 }
  82
  83 static const TypeInfo qemu_s390_flic_info = {
  84     .name          = TYPE_QEMU_S390_FLIC,
  85     .parent        = TYPE_S390_FLIC_COMMON,
  86     .instance_size = sizeof(QEMUS390FLICState),
  87     .class_init    = qemu_s390_flic_class_init,
  88 };
  89
  90 static const TypeInfo s390_flic_common_info = {
  91     .name          = TYPE_S390_FLIC_COMMON,
  92     .parent        = TYPE_SYS_BUS_DEVICE,
  93     .instance_size = sizeof(S390FLICState),
  94     .class_size    = sizeof(S390FLICStateClass),
  95 };
  96
  97 static void qemu_s390_flic_register_types(void)
  98 {
  99     type_register_static(&s390_flic_common_info);
 100     type_register_static(&qemu_s390_flic_info);
 101 }
 102
 103 type_init(qemu_s390_flic_register_types)