LXR qemu/hw/intc/s390

   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/osdep.h"
  14#include "qemu/error-report.h"
  15#include "hw/sysbus.h"
  16#include "migration/qemu-file.h"
  17#include "hw/s390x/s390_flic.h"
  18#include "trace.h"
  19
  20S390FLICState *s390_get_flic(void)
  21{
  22    S390FLICState *fs;
  23
  24    fs = S390_FLIC_COMMON(object_resolve_path(TYPE_KVM_S390_FLIC, NULL));
  25    if (!fs) {
  26        fs = S390_FLIC_COMMON(object_resolve_path(TYPE_QEMU_S390_FLIC, NULL));
  27    }
  28    return fs;
  29}
  30
  31void s390_flic_init(void)
  32{
  33    DeviceState *dev;
  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    qdev_init_nofail(dev);
  42}
  43
  44static int qemu_s390_register_io_adapter(S390FLICState *fs, uint32_t id,
  45                                         uint8_t isc, bool swap,
  46                                         bool is_maskable)
  47{
  48    /* nothing to do */
  49    return 0;
  50}
  51
  52static int qemu_s390_io_adapter_map(S390FLICState *fs, uint32_t id,
  53                                    uint64_t map_addr, bool do_map)
  54{
  55    /* nothing to do */
  56    return 0;
  57}
  58
  59static int qemu_s390_add_adapter_routes(S390FLICState *fs,
  60                                        AdapterRoutes *routes)
  61{
  62    return -ENOSYS;
  63}
  64
  65static void qemu_s390_release_adapter_routes(S390FLICState *fs,
  66                                             AdapterRoutes *routes)
  67{
  68}
  69
  70static int qemu_s390_clear_io_flic(S390FLICState *fs, uint16_t subchannel_id,
  71                           uint16_t subchannel_nr)
  72{
  73    /* Fixme TCG */
  74    return -ENOSYS;
  75}
  76
  77static void qemu_s390_flic_class_init(ObjectClass *oc, void *data)
  78{
  79    S390FLICStateClass *fsc = S390_FLIC_COMMON_CLASS(oc);
  80
  81    fsc->register_io_adapter = qemu_s390_register_io_adapter;
  82    fsc->io_adapter_map = qemu_s390_io_adapter_map;
  83    fsc->add_adapter_routes = qemu_s390_add_adapter_routes;
  84    fsc->release_adapter_routes = qemu_s390_release_adapter_routes;
  85    fsc->clear_io_irq = qemu_s390_clear_io_flic;
  86}
  87
  88static const TypeInfo qemu_s390_flic_info = {
  89    .name          = TYPE_QEMU_S390_FLIC,
  90    .parent        = TYPE_S390_FLIC_COMMON,
  91    .instance_size = sizeof(QEMUS390FLICState),
  92    .class_init    = qemu_s390_flic_class_init,
  93};
  94
  95static const TypeInfo s390_flic_common_info = {
  96    .name          = TYPE_S390_FLIC_COMMON,
  97    .parent        = TYPE_SYS_BUS_DEVICE,
  98    .instance_size = sizeof(S390FLICState),
  99    .class_size    = sizeof(S390FLICStateClass),
 100};
 101
 102static void qemu_s390_flic_register_types(void)
 103{
 104    type_register_static(&s390_flic_common_info);
 105    type_register_static(&qemu_s390_flic_info);
 106}
 107
 108type_init(qemu_s390_flic_register_types)
 109