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     object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_NET);
 163     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 164     object_unref(OBJECT(&dev->vdev));
 165     qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
 166 }
 167
 168 static int s390_virtio_blk_init(VirtIOS390Device *s390_dev)
 169 {
 170     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
 171     DeviceState *vdev = DEVICE(&dev->vdev);
 172     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 173     if (qdev_init(vdev) < 0) {
 174         return -1;
 175     }
 176     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 177 }
 178
 179 static void s390_virtio_blk_instance_init(Object *obj)
 180 {
 181     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
 182     object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BLK);
 183     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 184     object_unref(OBJECT(&dev->vdev));
 185     qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
 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     object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL);
 228     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 229     qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
 230     object_unref(OBJECT(&dev->vdev));
 231 }
 232
 233 static int s390_virtio_scsi_init(VirtIOS390Device *s390_dev)
 234 {
 235     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
 236     DeviceState *vdev = DEVICE(&dev->vdev);
 237     DeviceState *qdev = DEVICE(s390_dev);
 238     char *bus_name;
 239
 240     /*
 241      * For command line compatibility, this sets the virtio-scsi-device bus
 242      * name as before.
 243      */
 244     if (qdev->id) {
 245         bus_name = g_strdup_printf("%s.0", qdev->id);
 246         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 247         g_free(bus_name);
 248     }
 249
 250     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 251     if (qdev_init(vdev) < 0) {
 252         return -1;
 253     }
 254
 255     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 256 }
 257
 258 static void s390_virtio_scsi_instance_init(Object *obj)
 259 {
 260     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 261     object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SCSI);
 262     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 263     object_unref(OBJECT(&dev->vdev));
 264     qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
 265 }
 266
 267 #ifdef CONFIG_VHOST_SCSI
 268 static int s390_vhost_scsi_init(VirtIOS390Device *s390_dev)
 269 {
 270     VHostSCSIS390 *dev = VHOST_SCSI_S390(s390_dev);
 271     DeviceState *vdev = DEVICE(&dev->vdev);
 272
 273     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 274     if (qdev_init(vdev) < 0) {
 275         return -1;
 276     }
 277
 278     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 279 }
 280
 281 static void s390_vhost_scsi_instance_init(Object *obj)
 282 {
 283     VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
 284     object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VHOST_SCSI);
 285     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 286     object_unref(OBJECT(&dev->vdev));
 287     qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
 288 }
 289 #endif
 290
 291
 292 static int s390_virtio_rng_init(VirtIOS390Device *s390_dev)
 293 {
 294     VirtIORNGS390 *dev = VIRTIO_RNG_S390(s390_dev);
 295     DeviceState *vdev = DEVICE(&dev->vdev);
 296
 297     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 298     if (qdev_init(vdev) < 0) {
 299         return -1;
 300     }
 301
 302     object_property_set_link(OBJECT(dev),
 303                              OBJECT(dev->vdev.conf.rng), "rng",
 304                              NULL);
 305
 306     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 307 }
 308
 309 static void s390_virtio_rng_instance_init(Object *obj)
 310 {
 311     VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
 312     object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG);
 313     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 314     qdev_alias_all_properties(DEVICE(&dev->vdev), obj);
 315     object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
 316                              (Object **)&dev->vdev.conf.rng,
 317                              qdev_prop_allow_set_link_before_realize,
 318                              OBJ_PROP_LINK_UNREF_ON_RELEASE, NULL);
 319 }
 320
 321 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 322 {
 323     ram_addr_t token_off;
 324
 325     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 326                 (vq * VIRTIO_VQCONFIG_LEN) +
 327                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 328
 329     return ldq_be_phys(&address_space_memory, token_off);
 330 }
 331
 332 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 333 {
 334     VirtIODevice *vdev = dev->vdev;
 335     int num_vq;
 336
 337     for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
 338         if (!virtio_queue_get_num(vdev, num_vq)) {
 339             break;
 340         }
 341     }
 342
 343     return num_vq;
 344 }
 345
 346 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 347 {
 348     ram_addr_t r = bus->next_ring;
 349
 350     bus->next_ring += VIRTIO_RING_LEN;
 351     return r;
 352 }
 353
 354 void s390_virtio_device_sync(VirtIOS390Device *dev)
 355 {
 356     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 357     ram_addr_t cur_offs;
 358     uint8_t num_vq;
 359     int i;
 360
 361     virtio_reset(dev->vdev);
 362
 363     /* Sync dev space */
 364     stb_phys(&address_space_memory,
 365              dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
 366
 367     stb_phys(&address_space_memory,
 368              dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ,
 369              s390_virtio_device_num_vq(dev));
 370     stb_phys(&address_space_memory,
 371              dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
 372
 373     stb_phys(&address_space_memory,
 374              dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
 375
 376     num_vq = s390_virtio_device_num_vq(dev);
 377     stb_phys(&address_space_memory,
 378              dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
 379
 380     /* Sync virtqueues */
 381     for (i = 0; i < num_vq; i++) {
 382         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 383                         (i * VIRTIO_VQCONFIG_LEN);
 384         ram_addr_t vring;
 385
 386         vring = s390_virtio_next_ring(bus);
 387         virtio_queue_set_addr(dev->vdev, i, vring);
 388         virtio_queue_set_vector(dev->vdev, i, i);
 389         stq_be_phys(&address_space_memory,
 390                     vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
 391         stw_be_phys(&address_space_memory,
 392                     vq + VIRTIO_VQCONFIG_OFFS_NUM,
 393                     virtio_queue_get_num(dev->vdev, i));
 394     }
 395
 396     cur_offs = dev->dev_offs;
 397     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 398     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 399
 400     /* Sync feature bitmap */
 401     stl_le_phys(&address_space_memory, cur_offs, dev->host_features);
 402
 403     dev->feat_offs = cur_offs + dev->feat_len;
 404     cur_offs += dev->feat_len * 2;
 405
 406     /* Sync config space */
 407     virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
 408
 409     cpu_physical_memory_write(cur_offs,
 410                               dev->vdev->config, dev->vdev->config_len);
 411     cur_offs += dev->vdev->config_len;
 412 }
 413
 414 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 415 {
 416     VirtIODevice *vdev = dev->vdev;
 417     uint32_t features;
 418
 419     virtio_set_status(vdev, ldub_phys(&address_space_memory,
 420                                       dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
 421
 422     /* Update guest supported feature bitmap */
 423
 424     features = bswap32(ldl_be_phys(&address_space_memory, dev->feat_offs));
 425     virtio_set_features(vdev, features);
 426 }
 427
 428 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
 429 {
 430     return bus->console;
 431 }
 432
 433 /* Find a device by vring address */
 434 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 435                                              ram_addr_t mem,
 436                                              int *vq_num)
 437 {
 438     BusChild *kid;
 439     int i;
 440
 441     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 442         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 443
 444         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 445             if (!virtio_queue_get_addr(dev->vdev, i))
 446                 break;
 447             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 448                 if (vq_num) {
 449                     *vq_num = i;
 450                 }
 451                 return dev;
 452             }
 453         }
 454     }
 455
 456     return NULL;
 457 }
 458
 459 /* Find a device by device descriptor location */
 460 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 461 {
 462     BusChild *kid;
 463
 464     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 465         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 466         if (dev->dev_offs == mem) {
 467             return dev;
 468         }
 469     }
 470
 471     return NULL;
 472 }
 473
 474 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 475  * be careful and test performance if you change this.
 476  */
 477 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 478 {
 479     return container_of(d, VirtIOS390Device, qdev);
 480 }
 481
 482 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 483 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 484 {
 485     return container_of(d, VirtIOS390Device, qdev);
 486 }
 487
 488 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 489 {
 490     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 491     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 492
 493     s390_virtio_irq(0, token);
 494 }
 495
 496 static unsigned virtio_s390_get_features(DeviceState *d)
 497 {
 498     VirtIOS390Device *dev = to_virtio_s390_device(d);
 499     return dev->host_features;
 500 }
 501
 502 /**************** S390 Virtio Bus Device Descriptions *******************/
 503
 504 static Property s390_virtio_net_properties[] = {
 505     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 506     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
 507     DEFINE_PROP_END_OF_LIST(),
 508 };
 509
 510 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 511 {
 512     DeviceClass *dc = DEVICE_CLASS(klass);
 513     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 514
 515     k->init = s390_virtio_net_init;
 516     dc->props = s390_virtio_net_properties;
 517 }
 518
 519 static const TypeInfo s390_virtio_net = {
 520     .name          = TYPE_VIRTIO_NET_S390,
 521     .parent        = TYPE_VIRTIO_S390_DEVICE,
 522     .instance_size = sizeof(VirtIONetS390),
 523     .instance_init = s390_virtio_net_instance_init,
 524     .class_init    = s390_virtio_net_class_init,
 525 };
 526
 527 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 528 {
 529     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 530
 531     k->init = s390_virtio_blk_init;
 532 }
 533
 534 static const TypeInfo s390_virtio_blk = {
 535     .name          = "virtio-blk-s390",
 536     .parent        = TYPE_VIRTIO_S390_DEVICE,
 537     .instance_size = sizeof(VirtIOBlkS390),
 538     .instance_init = s390_virtio_blk_instance_init,
 539     .class_init    = s390_virtio_blk_class_init,
 540 };
 541
 542 static Property s390_virtio_serial_properties[] = {
 543     DEFINE_PROP_END_OF_LIST(),
 544 };
 545
 546 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 547 {
 548     DeviceClass *dc = DEVICE_CLASS(klass);
 549     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 550
 551     k->init = s390_virtio_serial_init;
 552     dc->props = s390_virtio_serial_properties;
 553 }
 554
 555 static const TypeInfo s390_virtio_serial = {
 556     .name          = TYPE_VIRTIO_SERIAL_S390,
 557     .parent        = TYPE_VIRTIO_S390_DEVICE,
 558     .instance_size = sizeof(VirtIOSerialS390),
 559     .instance_init = s390_virtio_serial_instance_init,
 560     .class_init    = s390_virtio_serial_class_init,
 561 };
 562
 563 static Property s390_virtio_rng_properties[] = {
 564     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 565     DEFINE_PROP_END_OF_LIST(),
 566 };
 567
 568 static void s390_virtio_rng_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_rng_init;
 574     dc->props = s390_virtio_rng_properties;
 575 }
 576
 577 static const TypeInfo s390_virtio_rng = {
 578     .name          = TYPE_VIRTIO_RNG_S390,
 579     .parent        = TYPE_VIRTIO_S390_DEVICE,
 580     .instance_size = sizeof(VirtIORNGS390),
 581     .instance_init = s390_virtio_rng_instance_init,
 582     .class_init    = s390_virtio_rng_class_init,
 583 };
 584
 585 static int s390_virtio_busdev_init(DeviceState *dev)
 586 {
 587     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 588     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 589
 590     virtio_s390_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
 591
 592     return _info->init(_dev);
 593 }
 594
 595 static void s390_virtio_busdev_reset(DeviceState *dev)
 596 {
 597     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 598
 599     virtio_reset(_dev->vdev);
 600 }
 601
 602 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 603 {
 604     DeviceClass *dc = DEVICE_CLASS(klass);
 605
 606     dc->init = s390_virtio_busdev_init;
 607     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 608     dc->unplug = qdev_simple_unplug_cb;
 609     dc->reset = s390_virtio_busdev_reset;
 610 }
 611
 612 static const TypeInfo virtio_s390_device_info = {
 613     .name = TYPE_VIRTIO_S390_DEVICE,
 614     .parent = TYPE_DEVICE,
 615     .instance_size = sizeof(VirtIOS390Device),
 616     .class_init = virtio_s390_device_class_init,
 617     .class_size = sizeof(VirtIOS390DeviceClass),
 618     .abstract = true,
 619 };
 620
 621 static Property s390_virtio_scsi_properties[] = {
 622     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 623     DEFINE_VIRTIO_SCSI_FEATURES(VirtIOS390Device, host_features),
 624     DEFINE_PROP_END_OF_LIST(),
 625 };
 626
 627 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 628 {
 629     DeviceClass *dc = DEVICE_CLASS(klass);
 630     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 631
 632     k->init = s390_virtio_scsi_init;
 633     dc->props = s390_virtio_scsi_properties;
 634 }
 635
 636 static const TypeInfo s390_virtio_scsi = {
 637     .name          = TYPE_VIRTIO_SCSI_S390,
 638     .parent        = TYPE_VIRTIO_S390_DEVICE,
 639     .instance_size = sizeof(VirtIOSCSIS390),
 640     .instance_init = s390_virtio_scsi_instance_init,
 641     .class_init    = s390_virtio_scsi_class_init,
 642 };
 643
 644 #ifdef CONFIG_VHOST_SCSI
 645 static Property s390_vhost_scsi_properties[] = {
 646     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 647     DEFINE_PROP_END_OF_LIST(),
 648 };
 649
 650 static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
 651 {
 652     DeviceClass *dc = DEVICE_CLASS(klass);
 653     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 654
 655     k->init = s390_vhost_scsi_init;
 656     dc->props = s390_vhost_scsi_properties;
 657 }
 658
 659 static const TypeInfo s390_vhost_scsi = {
 660     .name          = TYPE_VHOST_SCSI_S390,
 661     .parent        = TYPE_VIRTIO_S390_DEVICE,
 662     .instance_size = sizeof(VHostSCSIS390),
 663     .instance_init = s390_vhost_scsi_instance_init,
 664     .class_init    = s390_vhost_scsi_class_init,
 665 };
 666 #endif
 667
 668 /***************** S390 Virtio Bus Bridge Device *******************/
 669 /* Only required to have the virtio bus as child in the system bus */
 670
 671 static int s390_virtio_bridge_init(SysBusDevice *dev)
 672 {
 673     /* nothing */
 674     return 0;
 675 }
 676
 677 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 678 {
 679     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 680
 681     k->init = s390_virtio_bridge_init;
 682 }
 683
 684 static const TypeInfo s390_virtio_bridge_info = {
 685     .name          = "s390-virtio-bridge",
 686     .parent        = TYPE_SYS_BUS_DEVICE,
 687     .instance_size = sizeof(SysBusDevice),
 688     .class_init    = s390_virtio_bridge_class_init,
 689 };
 690
 691 /* virtio-s390-bus */
 692
 693 static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
 694                                 VirtIOS390Device *dev)
 695 {
 696     DeviceState *qdev = DEVICE(dev);
 697     BusState *qbus;
 698     char virtio_bus_name[] = "virtio-bus";
 699
 700     qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_S390_BUS,
 701                         qdev, virtio_bus_name);
 702     qbus = BUS(bus);
 703     qbus->allow_hotplug = 1;
 704 }
 705
 706 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 707 {
 708     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 709     BusClass *bus_class = BUS_CLASS(klass);
 710     bus_class->max_dev = 1;
 711     k->notify = virtio_s390_notify;
 712     k->get_features = virtio_s390_get_features;
 713 }
 714
 715 static const TypeInfo virtio_s390_bus_info = {
 716     .name          = TYPE_VIRTIO_S390_BUS,
 717     .parent        = TYPE_VIRTIO_BUS,
 718     .instance_size = sizeof(VirtioS390BusState),
 719     .class_init    = virtio_s390_bus_class_init,
 720 };
 721
 722 static void s390_virtio_register_types(void)
 723 {
 724     type_register_static(&virtio_s390_bus_info);
 725     type_register_static(&s390_virtio_bus_info);
 726     type_register_static(&virtio_s390_device_info);
 727     type_register_static(&s390_virtio_serial);
 728     type_register_static(&s390_virtio_blk);
 729     type_register_static(&s390_virtio_net);
 730     type_register_static(&s390_virtio_scsi);
 731 #ifdef CONFIG_VHOST_SCSI
 732     type_register_static(&s390_vhost_scsi);
 733 #endif
 734     type_register_static(&s390_virtio_rng);
 735     type_register_static(&s390_virtio_bridge_info);
 736 }
 737
 738 type_init(s390_virtio_register_types)