hw/s390-virtio-bus.c

   1 /*
   2  * QEMU S390 virtio target
   3  *
   4  * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "hw.h"
  21 #include "block/block.h"
  22 #include "sysemu/sysemu.h"
  23 #include "boards.h"
  24 #include "monitor/monitor.h"
  25 #include "loader.h"
  26 #include "elf.h"
  27 #include "hw/virtio.h"
  28 #include "hw/virtio-rng.h"
  29 #include "hw/virtio-serial.h"
  30 #include "hw/virtio-net.h"
  31 #include "hw/sysbus.h"
  32 #include "sysemu/kvm.h"
  33
  34 #include "hw/s390-virtio-bus.h"
  35 #include "hw/virtio-bus.h"
  36
  37 /* #define DEBUG_S390 */
  38
  39 #ifdef DEBUG_S390
  40 #define dprintf(fmt, ...) \
  41     do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
  42 #else
  43 #define dprintf(fmt, ...) \
  44     do { } while (0)
  45 #endif
  46
  47 #define VIRTIO_EXT_CODE   0x2603
  48
  49 static const TypeInfo s390_virtio_bus_info = {
  50     .name = TYPE_S390_VIRTIO_BUS,
  51     .parent = TYPE_BUS,
  52     .instance_size = sizeof(VirtIOS390Bus),
  53 };
  54
  55 static const VirtIOBindings virtio_s390_bindings;
  56
  57 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);
  58
  59 /* length of VirtIO device pages */
  60 const hwaddr virtio_size = S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
  61
  62 static void s390_virtio_bus_reset(void *opaque)
  63 {
  64     VirtIOS390Bus *bus = opaque;
  65     bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
  66 }
  67
  68 void s390_virtio_reset_idx(VirtIOS390Device *dev)
  69 {
  70     int i;
  71     hwaddr idx_addr;
  72     uint8_t num_vq;
  73
  74     num_vq = s390_virtio_device_num_vq(dev);
  75     for (i = 0; i < num_vq; i++) {
  76         idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
  77             VIRTIO_VRING_AVAIL_IDX_OFFS;
  78         stw_phys(idx_addr, 0);
  79         idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
  80             VIRTIO_VRING_USED_IDX_OFFS;
  81         stw_phys(idx_addr, 0);
  82     }
  83 }
  84
  85 VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
  86 {
  87     VirtIOS390Bus *bus;
  88     BusState *_bus;
  89     DeviceState *dev;
  90
  91     /* Create bridge device */
  92     dev = qdev_create(NULL, "s390-virtio-bridge");
  93     qdev_init_nofail(dev);
  94
  95     /* Create bus on bridge device */
  96
  97     _bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
  98     bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);
  99
 100     bus->dev_page = *ram_size;
 101     bus->dev_offs = bus->dev_page;
 102     bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
 103
 104     /* Enable hotplugging */
 105     _bus->allow_hotplug = 1;
 106
 107     /* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
 108     *ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
 109
 110     qemu_register_reset(s390_virtio_bus_reset, bus);
 111     return bus;
 112 }
 113
 114 static void s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token)
 115 {
 116     CPUS390XState *env = &cpu->env;
 117
 118     if (kvm_enabled()) {
 119         kvm_s390_virtio_irq(cpu, config_change, token);
 120     } else {
 121         cpu_inject_ext(env, VIRTIO_EXT_CODE, config_change, token);
 122     }
 123 }
 124
 125 static int s390_virtio_device_init(VirtIOS390Device *dev, VirtIODevice *vdev)
 126 {
 127     VirtIOS390Bus *bus;
 128     int dev_len;
 129
 130     bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 131     dev->vdev = vdev;
 132     dev->dev_offs = bus->dev_offs;
 133     dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
 134
 135     dev_len = VIRTIO_DEV_OFFS_CONFIG;
 136     dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
 137     dev_len += dev->feat_len * 2;
 138     dev_len += vdev->config_len;
 139
 140     bus->dev_offs += dev_len;
 141
 142     virtio_bind_device(vdev, &virtio_s390_bindings, DEVICE(dev));
 143     dev->host_features = vdev->get_features(vdev, dev->host_features);
 144     s390_virtio_device_sync(dev);
 145     s390_virtio_reset_idx(dev);
 146     if (dev->qdev.hotplugged) {
 147         S390CPU *cpu = s390_cpu_addr2state(0);
 148         s390_virtio_irq(cpu, VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
 149     }
 150
 151     return 0;
 152 }
 153
 154 static int s390_virtio_net_init(VirtIOS390Device *dev)
 155 {
 156     VirtIODevice *vdev;
 157
 158     vdev = virtio_net_init((DeviceState *)dev, &dev->nic, &dev->net);
 159     if (!vdev) {
 160         return -1;
 161     }
 162
 163     return s390_virtio_device_init(dev, vdev);
 164 }
 165
 166 static int s390_virtio_blk_init(VirtIOS390Device *dev)
 167 {
 168     VirtIODevice *vdev;
 169
 170     vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
 171     if (!vdev) {
 172         return -1;
 173     }
 174
 175     return s390_virtio_device_init(dev, vdev);
 176 }
 177
 178 static int s390_virtio_serial_init(VirtIOS390Device *dev)
 179 {
 180     VirtIOS390Bus *bus;
 181     VirtIODevice *vdev;
 182     int r;
 183
 184     bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 185
 186     vdev = virtio_serial_init((DeviceState *)dev, &dev->serial);
 187     if (!vdev) {
 188         return -1;
 189     }
 190
 191     r = s390_virtio_device_init(dev, vdev);
 192     if (!r) {
 193         bus->console = dev;
 194     }
 195
 196     return r;
 197 }
 198
 199 static int s390_virtio_scsi_init(VirtIOS390Device *dev)
 200 {
 201     VirtIODevice *vdev;
 202
 203     vdev = virtio_scsi_init((DeviceState *)dev, &dev->scsi);
 204     if (!vdev) {
 205         return -1;
 206     }
 207
 208     return s390_virtio_device_init(dev, vdev);
 209 }
 210
 211 static int s390_virtio_rng_init(VirtIOS390Device *dev)
 212 {
 213     VirtIODevice *vdev;
 214
 215     vdev = virtio_rng_init((DeviceState *)dev, &dev->rng);
 216     if (!vdev) {
 217         return -1;
 218     }
 219
 220     return s390_virtio_device_init(dev, vdev);
 221 }
 222
 223 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 224 {
 225     ram_addr_t token_off;
 226
 227     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 228                 (vq * VIRTIO_VQCONFIG_LEN) +
 229                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 230
 231     return ldq_be_phys(token_off);
 232 }
 233
 234 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 235 {
 236     VirtIODevice *vdev = dev->vdev;
 237     int num_vq;
 238
 239     for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
 240         if (!virtio_queue_get_num(vdev, num_vq)) {
 241             break;
 242         }
 243     }
 244
 245     return num_vq;
 246 }
 247
 248 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 249 {
 250     ram_addr_t r = bus->next_ring;
 251
 252     bus->next_ring += VIRTIO_RING_LEN;
 253     return r;
 254 }
 255
 256 void s390_virtio_device_sync(VirtIOS390Device *dev)
 257 {
 258     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 259     ram_addr_t cur_offs;
 260     uint8_t num_vq;
 261     int i;
 262
 263     virtio_reset(dev->vdev);
 264
 265     /* Sync dev space */
 266     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
 267
 268     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, s390_virtio_device_num_vq(dev));
 269     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
 270
 271     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
 272
 273     num_vq = s390_virtio_device_num_vq(dev);
 274     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
 275
 276     /* Sync virtqueues */
 277     for (i = 0; i < num_vq; i++) {
 278         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 279                         (i * VIRTIO_VQCONFIG_LEN);
 280         ram_addr_t vring;
 281
 282         vring = s390_virtio_next_ring(bus);
 283         virtio_queue_set_addr(dev->vdev, i, vring);
 284         virtio_queue_set_vector(dev->vdev, i, i);
 285         stq_be_phys(vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
 286         stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
 287     }
 288
 289     cur_offs = dev->dev_offs;
 290     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 291     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 292
 293     /* Sync feature bitmap */
 294     stl_le_phys(cur_offs, dev->host_features);
 295
 296     dev->feat_offs = cur_offs + dev->feat_len;
 297     cur_offs += dev->feat_len * 2;
 298
 299     /* Sync config space */
 300     if (dev->vdev->get_config) {
 301         dev->vdev->get_config(dev->vdev, dev->vdev->config);
 302     }
 303
 304     cpu_physical_memory_write(cur_offs,
 305                               dev->vdev->config, dev->vdev->config_len);
 306     cur_offs += dev->vdev->config_len;
 307 }
 308
 309 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 310 {
 311     VirtIODevice *vdev = dev->vdev;
 312     uint32_t features;
 313
 314     virtio_set_status(vdev, ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
 315
 316     /* Update guest supported feature bitmap */
 317
 318     features = bswap32(ldl_be_phys(dev->feat_offs));
 319     virtio_set_features(vdev, features);
 320 }
 321
 322 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
 323 {
 324     return bus->console;
 325 }
 326
 327 /* Find a device by vring address */
 328 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 329                                              ram_addr_t mem,
 330                                              int *vq_num)
 331 {
 332     BusChild *kid;
 333     int i;
 334
 335     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 336         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 337
 338         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 339             if (!virtio_queue_get_addr(dev->vdev, i))
 340                 break;
 341             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 342                 if (vq_num) {
 343                     *vq_num = i;
 344                 }
 345                 return dev;
 346             }
 347         }
 348     }
 349
 350     return NULL;
 351 }
 352
 353 /* Find a device by device descriptor location */
 354 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 355 {
 356     BusChild *kid;
 357
 358     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 359         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 360         if (dev->dev_offs == mem) {
 361             return dev;
 362         }
 363     }
 364
 365     return NULL;
 366 }
 367
 368 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 369  * be careful and test performance if you change this.
 370  */
 371 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 372 {
 373     return container_of(d, VirtIOS390Device, qdev);
 374 }
 375
 376 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 377 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 378 {
 379     return container_of(d, VirtIOS390Device, qdev);
 380 }
 381
 382 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 383 {
 384     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 385     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 386     S390CPU *cpu = s390_cpu_addr2state(0);
 387
 388     s390_virtio_irq(cpu, 0, token);
 389 }
 390
 391 static unsigned virtio_s390_get_features(DeviceState *d)
 392 {
 393     VirtIOS390Device *dev = to_virtio_s390_device(d);
 394     return dev->host_features;
 395 }
 396
 397 /**************** S390 Virtio Bus Device Descriptions *******************/
 398
 399 static const VirtIOBindings virtio_s390_bindings = {
 400     .notify = virtio_s390_notify,
 401     .get_features = virtio_s390_get_features,
 402 };
 403
 404 static Property s390_virtio_net_properties[] = {
 405     DEFINE_NIC_PROPERTIES(VirtIOS390Device, nic),
 406     DEFINE_PROP_UINT32("x-txtimer", VirtIOS390Device,
 407                        net.txtimer, TX_TIMER_INTERVAL),
 408     DEFINE_PROP_INT32("x-txburst", VirtIOS390Device,
 409                       net.txburst, TX_BURST),
 410     DEFINE_PROP_STRING("tx", VirtIOS390Device, net.tx),
 411     DEFINE_PROP_END_OF_LIST(),
 412 };
 413
 414 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 415 {
 416     DeviceClass *dc = DEVICE_CLASS(klass);
 417     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 418
 419     k->init = s390_virtio_net_init;
 420     dc->props = s390_virtio_net_properties;
 421 }
 422
 423 static const TypeInfo s390_virtio_net = {
 424     .name          = "virtio-net-s390",
 425     .parent        = TYPE_VIRTIO_S390_DEVICE,
 426     .instance_size = sizeof(VirtIOS390Device),
 427     .class_init    = s390_virtio_net_class_init,
 428 };
 429
 430 static Property s390_virtio_blk_properties[] = {
 431     DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, blk.conf),
 432     DEFINE_BLOCK_CHS_PROPERTIES(VirtIOS390Device, blk.conf),
 433     DEFINE_PROP_STRING("serial", VirtIOS390Device, blk.serial),
 434 #ifdef __linux__
 435     DEFINE_PROP_BIT("scsi", VirtIOS390Device, blk.scsi, 0, true),
 436 #endif
 437     DEFINE_PROP_END_OF_LIST(),
 438 };
 439
 440 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 441 {
 442     DeviceClass *dc = DEVICE_CLASS(klass);
 443     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 444
 445     k->init = s390_virtio_blk_init;
 446     dc->props = s390_virtio_blk_properties;
 447 }
 448
 449 static const TypeInfo s390_virtio_blk = {
 450     .name          = "virtio-blk-s390",
 451     .parent        = TYPE_VIRTIO_S390_DEVICE,
 452     .instance_size = sizeof(VirtIOS390Device),
 453     .class_init    = s390_virtio_blk_class_init,
 454 };
 455
 456 static Property s390_virtio_serial_properties[] = {
 457     DEFINE_PROP_UINT32("max_ports", VirtIOS390Device,
 458                        serial.max_virtserial_ports, 31),
 459     DEFINE_PROP_END_OF_LIST(),
 460 };
 461
 462 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 463 {
 464     DeviceClass *dc = DEVICE_CLASS(klass);
 465     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 466
 467     k->init = s390_virtio_serial_init;
 468     dc->props = s390_virtio_serial_properties;
 469 }
 470
 471 static const TypeInfo s390_virtio_serial = {
 472     .name          = "virtio-serial-s390",
 473     .parent        = TYPE_VIRTIO_S390_DEVICE,
 474     .instance_size = sizeof(VirtIOS390Device),
 475     .class_init    = s390_virtio_serial_class_init,
 476 };
 477
 478 static void s390_virtio_rng_initfn(Object *obj)
 479 {
 480     VirtIOS390Device *dev = VIRTIO_S390_DEVICE(obj);
 481
 482     object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
 483                              (Object **)&dev->rng.rng, NULL);
 484 }
 485
 486 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 487 {
 488     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 489
 490     k->init = s390_virtio_rng_init;
 491 }
 492
 493 static const TypeInfo s390_virtio_rng = {
 494     .name          = "virtio-rng-s390",
 495     .parent        = TYPE_VIRTIO_S390_DEVICE,
 496     .instance_size = sizeof(VirtIOS390Device),
 497     .instance_init = s390_virtio_rng_initfn,
 498     .class_init    = s390_virtio_rng_class_init,
 499 };
 500
 501 static int s390_virtio_busdev_init(DeviceState *dev)
 502 {
 503     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 504     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 505
 506     return _info->init(_dev);
 507 }
 508
 509 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 510 {
 511     DeviceClass *dc = DEVICE_CLASS(klass);
 512
 513     dc->init = s390_virtio_busdev_init;
 514     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 515     dc->unplug = qdev_simple_unplug_cb;
 516 }
 517
 518 static const TypeInfo virtio_s390_device_info = {
 519     .name = TYPE_VIRTIO_S390_DEVICE,
 520     .parent = TYPE_DEVICE,
 521     .instance_size = sizeof(VirtIOS390Device),
 522     .class_init = virtio_s390_device_class_init,
 523     .class_size = sizeof(VirtIOS390DeviceClass),
 524     .abstract = true,
 525 };
 526
 527 static Property s390_virtio_scsi_properties[] = {
 528     DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOS390Device, host_features, scsi),
 529     DEFINE_PROP_END_OF_LIST(),
 530 };
 531
 532 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 533 {
 534     DeviceClass *dc = DEVICE_CLASS(klass);
 535     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 536
 537     k->init = s390_virtio_scsi_init;
 538     dc->props = s390_virtio_scsi_properties;
 539 }
 540
 541 static const TypeInfo s390_virtio_scsi = {
 542     .name          = "virtio-scsi-s390",
 543     .parent        = TYPE_VIRTIO_S390_DEVICE,
 544     .instance_size = sizeof(VirtIOS390Device),
 545     .class_init    = s390_virtio_scsi_class_init,
 546 };
 547
 548 /***************** S390 Virtio Bus Bridge Device *******************/
 549 /* Only required to have the virtio bus as child in the system bus */
 550
 551 static int s390_virtio_bridge_init(SysBusDevice *dev)
 552 {
 553     /* nothing */
 554     return 0;
 555 }
 556
 557 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 558 {
 559     DeviceClass *dc = DEVICE_CLASS(klass);
 560     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 561
 562     k->init = s390_virtio_bridge_init;
 563     dc->no_user = 1;
 564 }
 565
 566 static const TypeInfo s390_virtio_bridge_info = {
 567     .name          = "s390-virtio-bridge",
 568     .parent        = TYPE_SYS_BUS_DEVICE,
 569     .instance_size = sizeof(SysBusDevice),
 570     .class_init    = s390_virtio_bridge_class_init,
 571 };
 572
 573 /* virtio-s390-bus */
 574
 575 void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev)
 576 {
 577     DeviceState *qdev = DEVICE(dev);
 578     BusState *qbus;
 579     qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_S390_BUS, qdev, NULL);
 580     qbus = BUS(bus);
 581     qbus->allow_hotplug = 0;
 582 }
 583
 584 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 585 {
 586     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 587     BusClass *bus_class = BUS_CLASS(klass);
 588     bus_class->max_dev = 1;
 589     k->notify = virtio_s390_notify;
 590     k->get_features = virtio_s390_get_features;
 591 }
 592
 593 static const TypeInfo virtio_s390_bus_info = {
 594     .name          = TYPE_VIRTIO_S390_BUS,
 595     .parent        = TYPE_VIRTIO_BUS,
 596     .instance_size = sizeof(VirtioS390BusState),
 597     .class_init    = virtio_s390_bus_class_init,
 598 };
 599
 600 static void s390_virtio_register_types(void)
 601 {
 602     type_register_static(&virtio_s390_bus_info);
 603     type_register_static(&s390_virtio_bus_info);
 604     type_register_static(&virtio_s390_device_info);
 605     type_register_static(&s390_virtio_serial);
 606     type_register_static(&s390_virtio_blk);
 607     type_register_static(&s390_virtio_net);
 608     type_register_static(&s390_virtio_scsi);
 609     type_register_static(&s390_virtio_rng);
 610     type_register_static(&s390_virtio_bridge_info);
 611 }
 612
 613 type_init(s390_virtio_register_types)