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/virtio/vhost-scsi.h"
  32 #include "hw/sysbus.h"
  33 #include "sysemu/kvm.h"
  34
  35 #include "hw/s390x/s390-virtio-bus.h"
  36 #include "hw/virtio/virtio-bus.h"
  37
  38 /* #define DEBUG_S390 */
  39
  40 #ifdef DEBUG_S390
  41 #define DPRINTF(fmt, ...) \
  42     do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
  43 #else
  44 #define DPRINTF(fmt, ...) \
  45     do { } while (0)
  46 #endif
  47
  48 static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
  49                                 VirtIOS390Device *dev);
  50
  51 static const TypeInfo s390_virtio_bus_info = {
  52     .name = TYPE_S390_VIRTIO_BUS,
  53     .parent = TYPE_BUS,
  54     .instance_size = sizeof(VirtIOS390Bus),
  55 };
  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(&address_space_memory, idx_addr, 0);
  79         idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
  80             VIRTIO_VRING_USED_IDX_OFFS;
  81         stw_phys(&address_space_memory, 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 int s390_virtio_device_init(VirtIOS390Device *dev, VirtIODevice *vdev)
 115 {
 116     VirtIOS390Bus *bus;
 117     int dev_len;
 118
 119     bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 120     dev->vdev = vdev;
 121     dev->dev_offs = bus->dev_offs;
 122     dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
 123
 124     dev_len = VIRTIO_DEV_OFFS_CONFIG;
 125     dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
 126     dev_len += dev->feat_len * 2;
 127     dev_len += virtio_bus_get_vdev_config_len(&dev->bus);
 128
 129     bus->dev_offs += dev_len;
 130
 131     dev->host_features = virtio_bus_get_vdev_features(&dev->bus,
 132                                                       dev->host_features);
 133     s390_virtio_device_sync(dev);
 134     s390_virtio_reset_idx(dev);
 135     if (dev->qdev.hotplugged) {
 136         s390_virtio_irq(VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
 137     }
 138
 139     return 0;
 140 }
 141
 142 static int s390_virtio_net_init(VirtIOS390Device *s390_dev)
 143 {
 144     DeviceState *qdev = DEVICE(s390_dev);
 145     VirtIONetS390 *dev = VIRTIO_NET_S390(s390_dev);
 146     DeviceState *vdev = DEVICE(&dev->vdev);
 147
 148     virtio_net_set_config_size(&dev->vdev, s390_dev->host_features);
 149     virtio_net_set_netclient_name(&dev->vdev, qdev->id,
 150                                   object_get_typename(OBJECT(qdev)));
 151     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 152     if (qdev_init(vdev) < 0) {
 153         return -1;
 154     }
 155
 156     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 157 }
 158
 159 static void s390_virtio_net_instance_init(Object *obj)
 160 {
 161     VirtIONetS390 *dev = VIRTIO_NET_S390(obj);
 162
 163     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 164                                 TYPE_VIRTIO_NET);
 165     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 166                               "bootindex", &error_abort);
 167 }
 168
 169 static int s390_virtio_blk_init(VirtIOS390Device *s390_dev)
 170 {
 171     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
 172     DeviceState *vdev = DEVICE(&dev->vdev);
 173     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 174     if (qdev_init(vdev) < 0) {
 175         return -1;
 176     }
 177     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 178 }
 179
 180 static void s390_virtio_blk_instance_init(Object *obj)
 181 {
 182     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
 183
 184     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 185                                 TYPE_VIRTIO_BLK);
 186     object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
 187                               &error_abort);
 188 }
 189
 190 static int s390_virtio_serial_init(VirtIOS390Device *s390_dev)
 191 {
 192     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(s390_dev);
 193     DeviceState *vdev = DEVICE(&dev->vdev);
 194     DeviceState *qdev = DEVICE(s390_dev);
 195     VirtIOS390Bus *bus;
 196     int r;
 197     char *bus_name;
 198
 199     bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
 200
 201     /*
 202      * For command line compatibility, this sets the virtio-serial-device bus
 203      * name as before.
 204      */
 205     if (qdev->id) {
 206         bus_name = g_strdup_printf("%s.0", qdev->id);
 207         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 208         g_free(bus_name);
 209     }
 210
 211     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 212     if (qdev_init(vdev) < 0) {
 213         return -1;
 214     }
 215
 216     r = s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 217     if (!r) {
 218         bus->console = s390_dev;
 219     }
 220
 221     return r;
 222 }
 223
 224 static void s390_virtio_serial_instance_init(Object *obj)
 225 {
 226     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
 227
 228     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 229                                 TYPE_VIRTIO_SERIAL);
 230 }
 231
 232 static int s390_virtio_scsi_init(VirtIOS390Device *s390_dev)
 233 {
 234     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
 235     DeviceState *vdev = DEVICE(&dev->vdev);
 236     DeviceState *qdev = DEVICE(s390_dev);
 237     char *bus_name;
 238
 239     /*
 240      * For command line compatibility, this sets the virtio-scsi-device bus
 241      * name as before.
 242      */
 243     if (qdev->id) {
 244         bus_name = g_strdup_printf("%s.0", qdev->id);
 245         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 246         g_free(bus_name);
 247     }
 248
 249     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 250     if (qdev_init(vdev) < 0) {
 251         return -1;
 252     }
 253
 254     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 255 }
 256
 257 static void s390_virtio_scsi_instance_init(Object *obj)
 258 {
 259     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 260
 261     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 262                                 TYPE_VIRTIO_SCSI);
 263 }
 264
 265 #ifdef CONFIG_VHOST_SCSI
 266 static int s390_vhost_scsi_init(VirtIOS390Device *s390_dev)
 267 {
 268     VHostSCSIS390 *dev = VHOST_SCSI_S390(s390_dev);
 269     DeviceState *vdev = DEVICE(&dev->vdev);
 270
 271     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 272     if (qdev_init(vdev) < 0) {
 273         return -1;
 274     }
 275
 276     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 277 }
 278
 279 static void s390_vhost_scsi_instance_init(Object *obj)
 280 {
 281     VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
 282
 283     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 284                                 TYPE_VHOST_SCSI);
 285 }
 286 #endif
 287
 288
 289 static int s390_virtio_rng_init(VirtIOS390Device *s390_dev)
 290 {
 291     VirtIORNGS390 *dev = VIRTIO_RNG_S390(s390_dev);
 292     DeviceState *vdev = DEVICE(&dev->vdev);
 293
 294     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 295     if (qdev_init(vdev) < 0) {
 296         return -1;
 297     }
 298
 299     object_property_set_link(OBJECT(dev),
 300                              OBJECT(dev->vdev.conf.rng), "rng",
 301                              NULL);
 302
 303     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 304 }
 305
 306 static void s390_virtio_rng_instance_init(Object *obj)
 307 {
 308     VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
 309
 310     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 311                                 TYPE_VIRTIO_RNG);
 312     object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
 313                              (Object **)&dev->vdev.conf.rng,
 314                              qdev_prop_allow_set_link_before_realize,
 315                              OBJ_PROP_LINK_UNREF_ON_RELEASE, NULL);
 316 }
 317
 318 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 319 {
 320     ram_addr_t token_off;
 321
 322     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 323                 (vq * VIRTIO_VQCONFIG_LEN) +
 324                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 325
 326     return ldq_be_phys(&address_space_memory, token_off);
 327 }
 328
 329 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 330 {
 331     VirtIODevice *vdev = dev->vdev;
 332     int num_vq;
 333
 334     for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
 335         if (!virtio_queue_get_num(vdev, num_vq)) {
 336             break;
 337         }
 338     }
 339
 340     return num_vq;
 341 }
 342
 343 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 344 {
 345     ram_addr_t r = bus->next_ring;
 346
 347     bus->next_ring += VIRTIO_RING_LEN;
 348     return r;
 349 }
 350
 351 void s390_virtio_device_sync(VirtIOS390Device *dev)
 352 {
 353     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 354     ram_addr_t cur_offs;
 355     uint8_t num_vq;
 356     int i;
 357
 358     virtio_reset(dev->vdev);
 359
 360     /* Sync dev space */
 361     stb_phys(&address_space_memory,
 362              dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
 363
 364     stb_phys(&address_space_memory,
 365              dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ,
 366              s390_virtio_device_num_vq(dev));
 367     stb_phys(&address_space_memory,
 368              dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
 369
 370     stb_phys(&address_space_memory,
 371              dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
 372
 373     num_vq = s390_virtio_device_num_vq(dev);
 374     stb_phys(&address_space_memory,
 375              dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
 376
 377     /* Sync virtqueues */
 378     for (i = 0; i < num_vq; i++) {
 379         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 380                         (i * VIRTIO_VQCONFIG_LEN);
 381         ram_addr_t vring;
 382
 383         vring = s390_virtio_next_ring(bus);
 384         virtio_queue_set_addr(dev->vdev, i, vring);
 385         virtio_queue_set_vector(dev->vdev, i, i);
 386         stq_be_phys(&address_space_memory,
 387                     vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
 388         stw_be_phys(&address_space_memory,
 389                     vq + VIRTIO_VQCONFIG_OFFS_NUM,
 390                     virtio_queue_get_num(dev->vdev, i));
 391     }
 392
 393     cur_offs = dev->dev_offs;
 394     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 395     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 396
 397     /* Sync feature bitmap */
 398     stl_le_phys(&address_space_memory, cur_offs, dev->host_features);
 399
 400     dev->feat_offs = cur_offs + dev->feat_len;
 401     cur_offs += dev->feat_len * 2;
 402
 403     /* Sync config space */
 404     virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
 405
 406     cpu_physical_memory_write(cur_offs,
 407                               dev->vdev->config, dev->vdev->config_len);
 408     cur_offs += dev->vdev->config_len;
 409 }
 410
 411 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 412 {
 413     VirtIODevice *vdev = dev->vdev;
 414     uint32_t features;
 415
 416     virtio_set_status(vdev, ldub_phys(&address_space_memory,
 417                                       dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
 418
 419     /* Update guest supported feature bitmap */
 420
 421     features = bswap32(ldl_be_phys(&address_space_memory, dev->feat_offs));
 422     virtio_set_features(vdev, features);
 423 }
 424
 425 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
 426 {
 427     return bus->console;
 428 }
 429
 430 /* Find a device by vring address */
 431 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 432                                              ram_addr_t mem,
 433                                              int *vq_num)
 434 {
 435     BusChild *kid;
 436     int i;
 437
 438     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 439         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 440
 441         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 442             if (!virtio_queue_get_addr(dev->vdev, i))
 443                 break;
 444             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 445                 if (vq_num) {
 446                     *vq_num = i;
 447                 }
 448                 return dev;
 449             }
 450         }
 451     }
 452
 453     return NULL;
 454 }
 455
 456 /* Find a device by device descriptor location */
 457 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 458 {
 459     BusChild *kid;
 460
 461     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 462         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 463         if (dev->dev_offs == mem) {
 464             return dev;
 465         }
 466     }
 467
 468     return NULL;
 469 }
 470
 471 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 472  * be careful and test performance if you change this.
 473  */
 474 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 475 {
 476     return container_of(d, VirtIOS390Device, qdev);
 477 }
 478
 479 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 480 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 481 {
 482     return container_of(d, VirtIOS390Device, qdev);
 483 }
 484
 485 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 486 {
 487     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 488     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 489
 490     s390_virtio_irq(0, token);
 491 }
 492
 493 static unsigned virtio_s390_get_features(DeviceState *d)
 494 {
 495     VirtIOS390Device *dev = to_virtio_s390_device(d);
 496     return dev->host_features;
 497 }
 498
 499 /**************** S390 Virtio Bus Device Descriptions *******************/
 500
 501 static Property s390_virtio_net_properties[] = {
 502     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 503     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
 504     DEFINE_PROP_END_OF_LIST(),
 505 };
 506
 507 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 508 {
 509     DeviceClass *dc = DEVICE_CLASS(klass);
 510     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 511
 512     k->init = s390_virtio_net_init;
 513     dc->props = s390_virtio_net_properties;
 514 }
 515
 516 static const TypeInfo s390_virtio_net = {
 517     .name          = TYPE_VIRTIO_NET_S390,
 518     .parent        = TYPE_VIRTIO_S390_DEVICE,
 519     .instance_size = sizeof(VirtIONetS390),
 520     .instance_init = s390_virtio_net_instance_init,
 521     .class_init    = s390_virtio_net_class_init,
 522 };
 523
 524 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 525 {
 526     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 527
 528     k->init = s390_virtio_blk_init;
 529 }
 530
 531 static const TypeInfo s390_virtio_blk = {
 532     .name          = "virtio-blk-s390",
 533     .parent        = TYPE_VIRTIO_S390_DEVICE,
 534     .instance_size = sizeof(VirtIOBlkS390),
 535     .instance_init = s390_virtio_blk_instance_init,
 536     .class_init    = s390_virtio_blk_class_init,
 537 };
 538
 539 static Property s390_virtio_serial_properties[] = {
 540     DEFINE_PROP_END_OF_LIST(),
 541 };
 542
 543 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 544 {
 545     DeviceClass *dc = DEVICE_CLASS(klass);
 546     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 547
 548     k->init = s390_virtio_serial_init;
 549     dc->props = s390_virtio_serial_properties;
 550 }
 551
 552 static const TypeInfo s390_virtio_serial = {
 553     .name          = TYPE_VIRTIO_SERIAL_S390,
 554     .parent        = TYPE_VIRTIO_S390_DEVICE,
 555     .instance_size = sizeof(VirtIOSerialS390),
 556     .instance_init = s390_virtio_serial_instance_init,
 557     .class_init    = s390_virtio_serial_class_init,
 558 };
 559
 560 static Property s390_virtio_rng_properties[] = {
 561     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 562     DEFINE_PROP_END_OF_LIST(),
 563 };
 564
 565 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 566 {
 567     DeviceClass *dc = DEVICE_CLASS(klass);
 568     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 569
 570     k->init = s390_virtio_rng_init;
 571     dc->props = s390_virtio_rng_properties;
 572 }
 573
 574 static const TypeInfo s390_virtio_rng = {
 575     .name          = TYPE_VIRTIO_RNG_S390,
 576     .parent        = TYPE_VIRTIO_S390_DEVICE,
 577     .instance_size = sizeof(VirtIORNGS390),
 578     .instance_init = s390_virtio_rng_instance_init,
 579     .class_init    = s390_virtio_rng_class_init,
 580 };
 581
 582 static int s390_virtio_busdev_init(DeviceState *dev)
 583 {
 584     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 585     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 586
 587     virtio_s390_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
 588
 589     return _info->init(_dev);
 590 }
 591
 592 static void s390_virtio_busdev_reset(DeviceState *dev)
 593 {
 594     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 595
 596     virtio_reset(_dev->vdev);
 597 }
 598
 599 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 600 {
 601     DeviceClass *dc = DEVICE_CLASS(klass);
 602
 603     dc->init = s390_virtio_busdev_init;
 604     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 605     dc->unplug = qdev_simple_unplug_cb;
 606     dc->reset = s390_virtio_busdev_reset;
 607 }
 608
 609 static const TypeInfo virtio_s390_device_info = {
 610     .name = TYPE_VIRTIO_S390_DEVICE,
 611     .parent = TYPE_DEVICE,
 612     .instance_size = sizeof(VirtIOS390Device),
 613     .class_init = virtio_s390_device_class_init,
 614     .class_size = sizeof(VirtIOS390DeviceClass),
 615     .abstract = true,
 616 };
 617
 618 static Property s390_virtio_scsi_properties[] = {
 619     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 620     DEFINE_VIRTIO_SCSI_FEATURES(VirtIOS390Device, host_features),
 621     DEFINE_PROP_END_OF_LIST(),
 622 };
 623
 624 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 625 {
 626     DeviceClass *dc = DEVICE_CLASS(klass);
 627     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 628
 629     k->init = s390_virtio_scsi_init;
 630     dc->props = s390_virtio_scsi_properties;
 631 }
 632
 633 static const TypeInfo s390_virtio_scsi = {
 634     .name          = TYPE_VIRTIO_SCSI_S390,
 635     .parent        = TYPE_VIRTIO_S390_DEVICE,
 636     .instance_size = sizeof(VirtIOSCSIS390),
 637     .instance_init = s390_virtio_scsi_instance_init,
 638     .class_init    = s390_virtio_scsi_class_init,
 639 };
 640
 641 #ifdef CONFIG_VHOST_SCSI
 642 static Property s390_vhost_scsi_properties[] = {
 643     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 644     DEFINE_PROP_END_OF_LIST(),
 645 };
 646
 647 static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
 648 {
 649     DeviceClass *dc = DEVICE_CLASS(klass);
 650     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 651
 652     k->init = s390_vhost_scsi_init;
 653     dc->props = s390_vhost_scsi_properties;
 654 }
 655
 656 static const TypeInfo s390_vhost_scsi = {
 657     .name          = TYPE_VHOST_SCSI_S390,
 658     .parent        = TYPE_VIRTIO_S390_DEVICE,
 659     .instance_size = sizeof(VHostSCSIS390),
 660     .instance_init = s390_vhost_scsi_instance_init,
 661     .class_init    = s390_vhost_scsi_class_init,
 662 };
 663 #endif
 664
 665 /***************** S390 Virtio Bus Bridge Device *******************/
 666 /* Only required to have the virtio bus as child in the system bus */
 667
 668 static int s390_virtio_bridge_init(SysBusDevice *dev)
 669 {
 670     /* nothing */
 671     return 0;
 672 }
 673
 674 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 675 {
 676     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 677
 678     k->init = s390_virtio_bridge_init;
 679 }
 680
 681 static const TypeInfo s390_virtio_bridge_info = {
 682     .name          = "s390-virtio-bridge",
 683     .parent        = TYPE_SYS_BUS_DEVICE,
 684     .instance_size = sizeof(SysBusDevice),
 685     .class_init    = s390_virtio_bridge_class_init,
 686 };
 687
 688 /* virtio-s390-bus */
 689
 690 static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
 691                                 VirtIOS390Device *dev)
 692 {
 693     DeviceState *qdev = DEVICE(dev);
 694     BusState *qbus;
 695     char virtio_bus_name[] = "virtio-bus";
 696
 697     qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_S390_BUS,
 698                         qdev, virtio_bus_name);
 699     qbus = BUS(bus);
 700     qbus->allow_hotplug = 1;
 701 }
 702
 703 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 704 {
 705     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 706     BusClass *bus_class = BUS_CLASS(klass);
 707     bus_class->max_dev = 1;
 708     k->notify = virtio_s390_notify;
 709     k->get_features = virtio_s390_get_features;
 710 }
 711
 712 static const TypeInfo virtio_s390_bus_info = {
 713     .name          = TYPE_VIRTIO_S390_BUS,
 714     .parent        = TYPE_VIRTIO_BUS,
 715     .instance_size = sizeof(VirtioS390BusState),
 716     .class_init    = virtio_s390_bus_class_init,
 717 };
 718
 719 static void s390_virtio_register_types(void)
 720 {
 721     type_register_static(&virtio_s390_bus_info);
 722     type_register_static(&s390_virtio_bus_info);
 723     type_register_static(&virtio_s390_device_info);
 724     type_register_static(&s390_virtio_serial);
 725     type_register_static(&s390_virtio_blk);
 726     type_register_static(&s390_virtio_net);
 727     type_register_static(&s390_virtio_scsi);
 728 #ifdef CONFIG_VHOST_SCSI
 729     type_register_static(&s390_vhost_scsi);
 730 #endif
 731     type_register_static(&s390_virtio_rng);
 732     type_register_static(&s390_virtio_bridge_info);
 733 }
 734
 735 type_init(s390_virtio_register_types)