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