hw/s390x/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/hw.h"
  21 #include "block/block.h"
  22 #include "sysemu/sysemu.h"
  23 #include "hw/boards.h"
  24 #include "monitor/monitor.h"
  25 #include "hw/loader.h"
  26 #include "elf.h"
  27 #include "hw/virtio/virtio.h"
  28 #include "hw/virtio/virtio-rng.h"
  29 #include "hw/virtio/virtio-serial.h"
  30 #include "hw/virtio/virtio-net.h"
  31 #include "hw/sysbus.h"
  32 #include "sysemu/kvm.h"
  33
  34 #include "hw/s390x/s390-virtio-bus.h"
  35 #include "hw/virtio/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     if (kvm_enabled()) {
 117         kvm_s390_virtio_irq(cpu, config_change, token);
 118     } else {
 119         cpu_inject_ext(cpu, VIRTIO_EXT_CODE, config_change, token);
 120     }
 121 }
 122
 123 static int s390_virtio_device_init(VirtIOS390Device *dev, VirtIODevice *vdev)
 124 {
 125     VirtIOS390Bus *bus;
 126     int dev_len;
 127
 128     bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 129     dev->vdev = vdev;
 130     dev->dev_offs = bus->dev_offs;
 131     dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
 132
 133     dev_len = VIRTIO_DEV_OFFS_CONFIG;
 134     dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
 135     dev_len += dev->feat_len * 2;
 136     dev_len += vdev->config_len;
 137
 138     bus->dev_offs += dev_len;
 139
 140     virtio_bind_device(vdev, &virtio_s390_bindings, DEVICE(dev));
 141     dev->host_features = vdev->get_features(vdev, dev->host_features);
 142     s390_virtio_device_sync(dev);
 143     s390_virtio_reset_idx(dev);
 144     if (dev->qdev.hotplugged) {
 145         S390CPU *cpu = s390_cpu_addr2state(0);
 146         s390_virtio_irq(cpu, VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
 147     }
 148
 149     return 0;
 150 }
 151
 152 static int s390_virtio_net_init(VirtIOS390Device *s390_dev)
 153 {
 154     VirtIONetS390 *dev = VIRTIO_NET_S390(s390_dev);
 155     DeviceState *vdev = DEVICE(&dev->vdev);
 156
 157     virtio_net_set_config_size(&dev->vdev, s390_dev->host_features);
 158     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 159     if (qdev_init(vdev) < 0) {
 160         return -1;
 161     }
 162
 163     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 164 }
 165
 166 static void s390_virtio_net_instance_init(Object *obj)
 167 {
 168     VirtIONetS390 *dev = VIRTIO_NET_S390(obj);
 169     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_NET);
 170     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 171 }
 172
 173 static int s390_virtio_blk_init(VirtIOS390Device *s390_dev)
 174 {
 175     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
 176     DeviceState *vdev = DEVICE(&dev->vdev);
 177     virtio_blk_set_conf(vdev, &(dev->blk));
 178     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 179     if (qdev_init(vdev) < 0) {
 180         return -1;
 181     }
 182     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 183 }
 184
 185 static void s390_virtio_blk_instance_init(Object *obj)
 186 {
 187     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
 188     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
 189     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 190 }
 191
 192 static int s390_virtio_serial_init(VirtIOS390Device *s390_dev)
 193 {
 194     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(s390_dev);
 195     DeviceState *vdev = DEVICE(&dev->vdev);
 196     DeviceState *qdev = DEVICE(s390_dev);
 197     VirtIOS390Bus *bus;
 198     int r;
 199
 200     bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
 201
 202     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 203     if (qdev_init(vdev) < 0) {
 204         return -1;
 205     }
 206
 207     r = s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 208     if (!r) {
 209         bus->console = s390_dev;
 210     }
 211
 212     return r;
 213 }
 214
 215 static void s390_virtio_serial_instance_init(Object *obj)
 216 {
 217     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
 218     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL);
 219     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 220 }
 221
 222 static int s390_virtio_scsi_init(VirtIOS390Device *s390_dev)
 223 {
 224     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
 225     DeviceState *vdev = DEVICE(&dev->vdev);
 226
 227     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 228     if (qdev_init(vdev) < 0) {
 229         return -1;
 230     }
 231
 232     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 233 }
 234
 235 static void s390_virtio_scsi_instance_init(Object *obj)
 236 {
 237     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 238     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI);
 239     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 240 }
 241
 242 static int s390_virtio_rng_init(VirtIOS390Device *dev)
 243 {
 244     VirtIODevice *vdev;
 245
 246     vdev = virtio_rng_init((DeviceState *)dev, &dev->rng);
 247     if (!vdev) {
 248         return -1;
 249     }
 250
 251     return s390_virtio_device_init(dev, vdev);
 252 }
 253
 254 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 255 {
 256     ram_addr_t token_off;
 257
 258     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 259                 (vq * VIRTIO_VQCONFIG_LEN) +
 260                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 261
 262     return ldq_be_phys(token_off);
 263 }
 264
 265 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 266 {
 267     VirtIODevice *vdev = dev->vdev;
 268     int num_vq;
 269
 270     for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
 271         if (!virtio_queue_get_num(vdev, num_vq)) {
 272             break;
 273         }
 274     }
 275
 276     return num_vq;
 277 }
 278
 279 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 280 {
 281     ram_addr_t r = bus->next_ring;
 282
 283     bus->next_ring += VIRTIO_RING_LEN;
 284     return r;
 285 }
 286
 287 void s390_virtio_device_sync(VirtIOS390Device *dev)
 288 {
 289     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 290     ram_addr_t cur_offs;
 291     uint8_t num_vq;
 292     int i;
 293
 294     virtio_reset(dev->vdev);
 295
 296     /* Sync dev space */
 297     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
 298
 299     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, s390_virtio_device_num_vq(dev));
 300     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
 301
 302     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
 303
 304     num_vq = s390_virtio_device_num_vq(dev);
 305     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
 306
 307     /* Sync virtqueues */
 308     for (i = 0; i < num_vq; i++) {
 309         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 310                         (i * VIRTIO_VQCONFIG_LEN);
 311         ram_addr_t vring;
 312
 313         vring = s390_virtio_next_ring(bus);
 314         virtio_queue_set_addr(dev->vdev, i, vring);
 315         virtio_queue_set_vector(dev->vdev, i, i);
 316         stq_be_phys(vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
 317         stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
 318     }
 319
 320     cur_offs = dev->dev_offs;
 321     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 322     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 323
 324     /* Sync feature bitmap */
 325     stl_le_phys(cur_offs, dev->host_features);
 326
 327     dev->feat_offs = cur_offs + dev->feat_len;
 328     cur_offs += dev->feat_len * 2;
 329
 330     /* Sync config space */
 331     if (dev->vdev->get_config) {
 332         dev->vdev->get_config(dev->vdev, dev->vdev->config);
 333     }
 334
 335     cpu_physical_memory_write(cur_offs,
 336                               dev->vdev->config, dev->vdev->config_len);
 337     cur_offs += dev->vdev->config_len;
 338 }
 339
 340 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 341 {
 342     VirtIODevice *vdev = dev->vdev;
 343     uint32_t features;
 344
 345     virtio_set_status(vdev, ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
 346
 347     /* Update guest supported feature bitmap */
 348
 349     features = bswap32(ldl_be_phys(dev->feat_offs));
 350     virtio_set_features(vdev, features);
 351 }
 352
 353 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
 354 {
 355     return bus->console;
 356 }
 357
 358 /* Find a device by vring address */
 359 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 360                                              ram_addr_t mem,
 361                                              int *vq_num)
 362 {
 363     BusChild *kid;
 364     int i;
 365
 366     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 367         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 368
 369         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 370             if (!virtio_queue_get_addr(dev->vdev, i))
 371                 break;
 372             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 373                 if (vq_num) {
 374                     *vq_num = i;
 375                 }
 376                 return dev;
 377             }
 378         }
 379     }
 380
 381     return NULL;
 382 }
 383
 384 /* Find a device by device descriptor location */
 385 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 386 {
 387     BusChild *kid;
 388
 389     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 390         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 391         if (dev->dev_offs == mem) {
 392             return dev;
 393         }
 394     }
 395
 396     return NULL;
 397 }
 398
 399 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 400  * be careful and test performance if you change this.
 401  */
 402 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 403 {
 404     return container_of(d, VirtIOS390Device, qdev);
 405 }
 406
 407 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 408 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 409 {
 410     return container_of(d, VirtIOS390Device, qdev);
 411 }
 412
 413 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 414 {
 415     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 416     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 417     S390CPU *cpu = s390_cpu_addr2state(0);
 418
 419     s390_virtio_irq(cpu, 0, token);
 420 }
 421
 422 static unsigned virtio_s390_get_features(DeviceState *d)
 423 {
 424     VirtIOS390Device *dev = to_virtio_s390_device(d);
 425     return dev->host_features;
 426 }
 427
 428 /**************** S390 Virtio Bus Device Descriptions *******************/
 429
 430 static const VirtIOBindings virtio_s390_bindings = {
 431     .notify = virtio_s390_notify,
 432     .get_features = virtio_s390_get_features,
 433 };
 434
 435 static Property s390_virtio_net_properties[] = {
 436     DEFINE_NIC_PROPERTIES(VirtIONetS390, vdev.nic_conf),
 437     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
 438     DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetS390, vdev.net_conf),
 439     DEFINE_PROP_END_OF_LIST(),
 440 };
 441
 442 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 443 {
 444     DeviceClass *dc = DEVICE_CLASS(klass);
 445     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 446
 447     k->init = s390_virtio_net_init;
 448     dc->props = s390_virtio_net_properties;
 449 }
 450
 451 static const TypeInfo s390_virtio_net = {
 452     .name          = TYPE_VIRTIO_NET_S390,
 453     .parent        = TYPE_VIRTIO_S390_DEVICE,
 454     .instance_size = sizeof(VirtIONetS390),
 455     .instance_init = s390_virtio_net_instance_init,
 456     .class_init    = s390_virtio_net_class_init,
 457 };
 458
 459 static Property s390_virtio_blk_properties[] = {
 460     DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkS390, blk),
 461     DEFINE_PROP_END_OF_LIST(),
 462 };
 463
 464 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 465 {
 466     DeviceClass *dc = DEVICE_CLASS(klass);
 467     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 468
 469     k->init = s390_virtio_blk_init;
 470     dc->props = s390_virtio_blk_properties;
 471 }
 472
 473 static const TypeInfo s390_virtio_blk = {
 474     .name          = "virtio-blk-s390",
 475     .parent        = TYPE_VIRTIO_S390_DEVICE,
 476     .instance_size = sizeof(VirtIOBlkS390),
 477     .instance_init = s390_virtio_blk_instance_init,
 478     .class_init    = s390_virtio_blk_class_init,
 479 };
 480
 481 static Property s390_virtio_serial_properties[] = {
 482     DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialS390, vdev.serial),
 483     DEFINE_PROP_END_OF_LIST(),
 484 };
 485
 486 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 487 {
 488     DeviceClass *dc = DEVICE_CLASS(klass);
 489     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 490
 491     k->init = s390_virtio_serial_init;
 492     dc->props = s390_virtio_serial_properties;
 493 }
 494
 495 static const TypeInfo s390_virtio_serial = {
 496     .name          = TYPE_VIRTIO_SERIAL_S390,
 497     .parent        = TYPE_VIRTIO_S390_DEVICE,
 498     .instance_size = sizeof(VirtIOSerialS390),
 499     .instance_init = s390_virtio_serial_instance_init,
 500     .class_init    = s390_virtio_serial_class_init,
 501 };
 502
 503 static void s390_virtio_rng_initfn(Object *obj)
 504 {
 505     VirtIOS390Device *dev = VIRTIO_S390_DEVICE(obj);
 506
 507     object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
 508                              (Object **)&dev->rng.rng, NULL);
 509 }
 510
 511 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 512 {
 513     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 514
 515     k->init = s390_virtio_rng_init;
 516 }
 517
 518 static const TypeInfo s390_virtio_rng = {
 519     .name          = "virtio-rng-s390",
 520     .parent        = TYPE_VIRTIO_S390_DEVICE,
 521     .instance_size = sizeof(VirtIOS390Device),
 522     .instance_init = s390_virtio_rng_initfn,
 523     .class_init    = s390_virtio_rng_class_init,
 524 };
 525
 526 static int s390_virtio_busdev_init(DeviceState *dev)
 527 {
 528     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 529     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 530
 531     virtio_s390_bus_new(&_dev->bus, _dev);
 532
 533     return _info->init(_dev);
 534 }
 535
 536 static void s390_virtio_busdev_reset(DeviceState *dev)
 537 {
 538     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 539
 540     virtio_reset(_dev->vdev);
 541 }
 542
 543 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 544 {
 545     DeviceClass *dc = DEVICE_CLASS(klass);
 546
 547     dc->init = s390_virtio_busdev_init;
 548     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 549     dc->unplug = qdev_simple_unplug_cb;
 550     dc->reset = s390_virtio_busdev_reset;
 551 }
 552
 553 static const TypeInfo virtio_s390_device_info = {
 554     .name = TYPE_VIRTIO_S390_DEVICE,
 555     .parent = TYPE_DEVICE,
 556     .instance_size = sizeof(VirtIOS390Device),
 557     .class_init = virtio_s390_device_class_init,
 558     .class_size = sizeof(VirtIOS390DeviceClass),
 559     .abstract = true,
 560 };
 561
 562 static Property s390_virtio_scsi_properties[] = {
 563     DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIS390, vdev.parent_obj.conf),
 564     DEFINE_VIRTIO_SCSI_FEATURES(VirtIOS390Device, host_features),
 565     DEFINE_PROP_END_OF_LIST(),
 566 };
 567
 568 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 569 {
 570     DeviceClass *dc = DEVICE_CLASS(klass);
 571     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 572
 573     k->init = s390_virtio_scsi_init;
 574     dc->props = s390_virtio_scsi_properties;
 575 }
 576
 577 static const TypeInfo s390_virtio_scsi = {
 578     .name          = TYPE_VIRTIO_SCSI_S390,
 579     .parent        = TYPE_VIRTIO_S390_DEVICE,
 580     .instance_size = sizeof(VirtIOSCSIS390),
 581     .instance_init = s390_virtio_scsi_instance_init,
 582     .class_init    = s390_virtio_scsi_class_init,
 583 };
 584
 585 /***************** S390 Virtio Bus Bridge Device *******************/
 586 /* Only required to have the virtio bus as child in the system bus */
 587
 588 static int s390_virtio_bridge_init(SysBusDevice *dev)
 589 {
 590     /* nothing */
 591     return 0;
 592 }
 593
 594 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 595 {
 596     DeviceClass *dc = DEVICE_CLASS(klass);
 597     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 598
 599     k->init = s390_virtio_bridge_init;
 600     dc->no_user = 1;
 601 }
 602
 603 static const TypeInfo s390_virtio_bridge_info = {
 604     .name          = "s390-virtio-bridge",
 605     .parent        = TYPE_SYS_BUS_DEVICE,
 606     .instance_size = sizeof(SysBusDevice),
 607     .class_init    = s390_virtio_bridge_class_init,
 608 };
 609
 610 /* virtio-s390-bus */
 611
 612 void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev)
 613 {
 614     DeviceState *qdev = DEVICE(dev);
 615     BusState *qbus;
 616     qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_S390_BUS, qdev, NULL);
 617     qbus = BUS(bus);
 618     qbus->allow_hotplug = 1;
 619 }
 620
 621 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 622 {
 623     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 624     BusClass *bus_class = BUS_CLASS(klass);
 625     bus_class->max_dev = 1;
 626     k->notify = virtio_s390_notify;
 627     k->get_features = virtio_s390_get_features;
 628 }
 629
 630 static const TypeInfo virtio_s390_bus_info = {
 631     .name          = TYPE_VIRTIO_S390_BUS,
 632     .parent        = TYPE_VIRTIO_BUS,
 633     .instance_size = sizeof(VirtioS390BusState),
 634     .class_init    = virtio_s390_bus_class_init,
 635 };
 636
 637 static void s390_virtio_register_types(void)
 638 {
 639     type_register_static(&virtio_s390_bus_info);
 640     type_register_static(&s390_virtio_bus_info);
 641     type_register_static(&virtio_s390_device_info);
 642     type_register_static(&s390_virtio_serial);
 643     type_register_static(&s390_virtio_blk);
 644     type_register_static(&s390_virtio_net);
 645     type_register_static(&s390_virtio_scsi);
 646     type_register_static(&s390_virtio_rng);
 647     type_register_static(&s390_virtio_bridge_info);
 648 }
 649
 650 type_init(s390_virtio_register_types)