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 "sysemu/block-backend.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     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     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 189                               "bootindex", &error_abort);
 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     char *bus_name;
 200
 201     bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
 202
 203     /*
 204      * For command line compatibility, this sets the virtio-serial-device bus
 205      * name as before.
 206      */
 207     if (qdev->id) {
 208         bus_name = g_strdup_printf("%s.0", qdev->id);
 209         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 210         g_free(bus_name);
 211     }
 212
 213     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 214     if (qdev_init(vdev) < 0) {
 215         return -1;
 216     }
 217
 218     r = s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 219     if (!r) {
 220         bus->console = s390_dev;
 221     }
 222
 223     return r;
 224 }
 225
 226 static void s390_virtio_serial_instance_init(Object *obj)
 227 {
 228     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
 229
 230     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 231                                 TYPE_VIRTIO_SERIAL);
 232 }
 233
 234 static int s390_virtio_scsi_init(VirtIOS390Device *s390_dev)
 235 {
 236     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
 237     DeviceState *vdev = DEVICE(&dev->vdev);
 238     DeviceState *qdev = DEVICE(s390_dev);
 239     char *bus_name;
 240
 241     /*
 242      * For command line compatibility, this sets the virtio-scsi-device bus
 243      * name as before.
 244      */
 245     if (qdev->id) {
 246         bus_name = g_strdup_printf("%s.0", qdev->id);
 247         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 248         g_free(bus_name);
 249     }
 250
 251     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 252     if (qdev_init(vdev) < 0) {
 253         return -1;
 254     }
 255
 256     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 257 }
 258
 259 static void s390_virtio_scsi_instance_init(Object *obj)
 260 {
 261     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 262
 263     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 264                                 TYPE_VIRTIO_SCSI);
 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
 285     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 286                                 TYPE_VHOST_SCSI);
 287 }
 288 #endif
 289
 290
 291 static int s390_virtio_rng_init(VirtIOS390Device *s390_dev)
 292 {
 293     VirtIORNGS390 *dev = VIRTIO_RNG_S390(s390_dev);
 294     DeviceState *vdev = DEVICE(&dev->vdev);
 295
 296     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 297     if (qdev_init(vdev) < 0) {
 298         return -1;
 299     }
 300
 301     object_property_set_link(OBJECT(dev),
 302                              OBJECT(dev->vdev.conf.rng), "rng",
 303                              NULL);
 304
 305     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 306 }
 307
 308 static void s390_virtio_rng_instance_init(Object *obj)
 309 {
 310     VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
 311
 312     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 313                                 TYPE_VIRTIO_RNG);
 314     object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
 315                              (Object **)&dev->vdev.conf.rng,
 316                              qdev_prop_allow_set_link_before_realize,
 317                              OBJ_PROP_LINK_UNREF_ON_RELEASE, NULL);
 318 }
 319
 320 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 321 {
 322     ram_addr_t token_off;
 323
 324     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 325                 (vq * VIRTIO_VQCONFIG_LEN) +
 326                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 327
 328     return ldq_be_phys(&address_space_memory, token_off);
 329 }
 330
 331 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 332 {
 333     VirtIODevice *vdev = dev->vdev;
 334     int num_vq;
 335
 336     for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
 337         if (!virtio_queue_get_num(vdev, num_vq)) {
 338             break;
 339         }
 340     }
 341
 342     return num_vq;
 343 }
 344
 345 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 346 {
 347     ram_addr_t r = bus->next_ring;
 348
 349     bus->next_ring += VIRTIO_RING_LEN;
 350     return r;
 351 }
 352
 353 void s390_virtio_device_sync(VirtIOS390Device *dev)
 354 {
 355     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 356     ram_addr_t cur_offs;
 357     uint8_t num_vq;
 358     int i;
 359
 360     virtio_reset(dev->vdev);
 361
 362     /* Sync dev space */
 363     stb_phys(&address_space_memory,
 364              dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
 365
 366     stb_phys(&address_space_memory,
 367              dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ,
 368              s390_virtio_device_num_vq(dev));
 369     stb_phys(&address_space_memory,
 370              dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
 371
 372     stb_phys(&address_space_memory,
 373              dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
 374
 375     num_vq = s390_virtio_device_num_vq(dev);
 376     stb_phys(&address_space_memory,
 377              dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
 378
 379     /* Sync virtqueues */
 380     for (i = 0; i < num_vq; i++) {
 381         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 382                         (i * VIRTIO_VQCONFIG_LEN);
 383         ram_addr_t vring;
 384
 385         vring = s390_virtio_next_ring(bus);
 386         virtio_queue_set_addr(dev->vdev, i, vring);
 387         virtio_queue_set_vector(dev->vdev, i, i);
 388         stq_be_phys(&address_space_memory,
 389                     vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
 390         stw_be_phys(&address_space_memory,
 391                     vq + VIRTIO_VQCONFIG_OFFS_NUM,
 392                     virtio_queue_get_num(dev->vdev, i));
 393     }
 394
 395     cur_offs = dev->dev_offs;
 396     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 397     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 398
 399     /* Sync feature bitmap */
 400     stl_le_phys(&address_space_memory, cur_offs, dev->host_features);
 401
 402     dev->feat_offs = cur_offs + dev->feat_len;
 403     cur_offs += dev->feat_len * 2;
 404
 405     /* Sync config space */
 406     virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
 407
 408     cpu_physical_memory_write(cur_offs,
 409                               dev->vdev->config, dev->vdev->config_len);
 410     cur_offs += dev->vdev->config_len;
 411 }
 412
 413 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 414 {
 415     VirtIODevice *vdev = dev->vdev;
 416     uint32_t features;
 417
 418     virtio_set_status(vdev, ldub_phys(&address_space_memory,
 419                                       dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
 420
 421     /* Update guest supported feature bitmap */
 422
 423     features = bswap32(ldl_be_phys(&address_space_memory, dev->feat_offs));
 424     virtio_set_features(vdev, features);
 425 }
 426
 427 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
 428 {
 429     return bus->console;
 430 }
 431
 432 /* Find a device by vring address */
 433 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 434                                              ram_addr_t mem,
 435                                              int *vq_num)
 436 {
 437     BusChild *kid;
 438     int i;
 439
 440     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 441         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 442
 443         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 444             if (!virtio_queue_get_addr(dev->vdev, i))
 445                 break;
 446             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 447                 if (vq_num) {
 448                     *vq_num = i;
 449                 }
 450                 return dev;
 451             }
 452         }
 453     }
 454
 455     return NULL;
 456 }
 457
 458 /* Find a device by device descriptor location */
 459 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 460 {
 461     BusChild *kid;
 462
 463     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 464         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 465         if (dev->dev_offs == mem) {
 466             return dev;
 467         }
 468     }
 469
 470     return NULL;
 471 }
 472
 473 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 474  * be careful and test performance if you change this.
 475  */
 476 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 477 {
 478     return container_of(d, VirtIOS390Device, qdev);
 479 }
 480
 481 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 482 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 483 {
 484     return container_of(d, VirtIOS390Device, qdev);
 485 }
 486
 487 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 488 {
 489     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 490     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 491
 492     s390_virtio_irq(0, token);
 493 }
 494
 495 static unsigned virtio_s390_get_features(DeviceState *d)
 496 {
 497     VirtIOS390Device *dev = to_virtio_s390_device(d);
 498     return dev->host_features;
 499 }
 500
 501 /**************** S390 Virtio Bus Device Descriptions *******************/
 502
 503 static Property s390_virtio_net_properties[] = {
 504     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 505     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
 506     DEFINE_PROP_END_OF_LIST(),
 507 };
 508
 509 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 510 {
 511     DeviceClass *dc = DEVICE_CLASS(klass);
 512     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 513
 514     k->init = s390_virtio_net_init;
 515     dc->props = s390_virtio_net_properties;
 516 }
 517
 518 static const TypeInfo s390_virtio_net = {
 519     .name          = TYPE_VIRTIO_NET_S390,
 520     .parent        = TYPE_VIRTIO_S390_DEVICE,
 521     .instance_size = sizeof(VirtIONetS390),
 522     .instance_init = s390_virtio_net_instance_init,
 523     .class_init    = s390_virtio_net_class_init,
 524 };
 525
 526 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 527 {
 528     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 529
 530     k->init = s390_virtio_blk_init;
 531 }
 532
 533 static const TypeInfo s390_virtio_blk = {
 534     .name          = "virtio-blk-s390",
 535     .parent        = TYPE_VIRTIO_S390_DEVICE,
 536     .instance_size = sizeof(VirtIOBlkS390),
 537     .instance_init = s390_virtio_blk_instance_init,
 538     .class_init    = s390_virtio_blk_class_init,
 539 };
 540
 541 static Property s390_virtio_serial_properties[] = {
 542     DEFINE_PROP_END_OF_LIST(),
 543 };
 544
 545 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 546 {
 547     DeviceClass *dc = DEVICE_CLASS(klass);
 548     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 549
 550     k->init = s390_virtio_serial_init;
 551     dc->props = s390_virtio_serial_properties;
 552 }
 553
 554 static const TypeInfo s390_virtio_serial = {
 555     .name          = TYPE_VIRTIO_SERIAL_S390,
 556     .parent        = TYPE_VIRTIO_S390_DEVICE,
 557     .instance_size = sizeof(VirtIOSerialS390),
 558     .instance_init = s390_virtio_serial_instance_init,
 559     .class_init    = s390_virtio_serial_class_init,
 560 };
 561
 562 static Property s390_virtio_rng_properties[] = {
 563     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 564     DEFINE_PROP_END_OF_LIST(),
 565 };
 566
 567 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 568 {
 569     DeviceClass *dc = DEVICE_CLASS(klass);
 570     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 571
 572     k->init = s390_virtio_rng_init;
 573     dc->props = s390_virtio_rng_properties;
 574 }
 575
 576 static const TypeInfo s390_virtio_rng = {
 577     .name          = TYPE_VIRTIO_RNG_S390,
 578     .parent        = TYPE_VIRTIO_S390_DEVICE,
 579     .instance_size = sizeof(VirtIORNGS390),
 580     .instance_init = s390_virtio_rng_instance_init,
 581     .class_init    = s390_virtio_rng_class_init,
 582 };
 583
 584 static int s390_virtio_busdev_init(DeviceState *dev)
 585 {
 586     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 587     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 588
 589     virtio_s390_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
 590
 591     return _info->init(_dev);
 592 }
 593
 594 static void s390_virtio_busdev_reset(DeviceState *dev)
 595 {
 596     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 597
 598     virtio_reset(_dev->vdev);
 599 }
 600
 601 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 602 {
 603     DeviceClass *dc = DEVICE_CLASS(klass);
 604
 605     dc->init = s390_virtio_busdev_init;
 606     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 607     dc->reset = s390_virtio_busdev_reset;
 608 }
 609
 610 static const TypeInfo virtio_s390_device_info = {
 611     .name = TYPE_VIRTIO_S390_DEVICE,
 612     .parent = TYPE_DEVICE,
 613     .instance_size = sizeof(VirtIOS390Device),
 614     .class_init = virtio_s390_device_class_init,
 615     .class_size = sizeof(VirtIOS390DeviceClass),
 616     .abstract = true,
 617 };
 618
 619 static Property s390_virtio_scsi_properties[] = {
 620     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 621     DEFINE_VIRTIO_SCSI_FEATURES(VirtIOS390Device, host_features),
 622     DEFINE_PROP_END_OF_LIST(),
 623 };
 624
 625 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 626 {
 627     DeviceClass *dc = DEVICE_CLASS(klass);
 628     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 629
 630     k->init = s390_virtio_scsi_init;
 631     dc->props = s390_virtio_scsi_properties;
 632 }
 633
 634 static const TypeInfo s390_virtio_scsi = {
 635     .name          = TYPE_VIRTIO_SCSI_S390,
 636     .parent        = TYPE_VIRTIO_S390_DEVICE,
 637     .instance_size = sizeof(VirtIOSCSIS390),
 638     .instance_init = s390_virtio_scsi_instance_init,
 639     .class_init    = s390_virtio_scsi_class_init,
 640 };
 641
 642 #ifdef CONFIG_VHOST_SCSI
 643 static Property s390_vhost_scsi_properties[] = {
 644     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 645     DEFINE_PROP_END_OF_LIST(),
 646 };
 647
 648 static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
 649 {
 650     DeviceClass *dc = DEVICE_CLASS(klass);
 651     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 652
 653     k->init = s390_vhost_scsi_init;
 654     dc->props = s390_vhost_scsi_properties;
 655 }
 656
 657 static const TypeInfo s390_vhost_scsi = {
 658     .name          = TYPE_VHOST_SCSI_S390,
 659     .parent        = TYPE_VIRTIO_S390_DEVICE,
 660     .instance_size = sizeof(VHostSCSIS390),
 661     .instance_init = s390_vhost_scsi_instance_init,
 662     .class_init    = s390_vhost_scsi_class_init,
 663 };
 664 #endif
 665
 666 /***************** S390 Virtio Bus Bridge Device *******************/
 667 /* Only required to have the virtio bus as child in the system bus */
 668
 669 static int s390_virtio_bridge_init(SysBusDevice *dev)
 670 {
 671     /* nothing */
 672     return 0;
 673 }
 674
 675 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 676 {
 677     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 678
 679     k->init = s390_virtio_bridge_init;
 680 }
 681
 682 static const TypeInfo s390_virtio_bridge_info = {
 683     .name          = "s390-virtio-bridge",
 684     .parent        = TYPE_SYS_BUS_DEVICE,
 685     .instance_size = sizeof(SysBusDevice),
 686     .class_init    = s390_virtio_bridge_class_init,
 687     .interfaces = (InterfaceInfo[]) {
 688         { TYPE_HOTPLUG_HANDLER },
 689         { }
 690     }
 691 };
 692
 693 /* virtio-s390-bus */
 694
 695 static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
 696                                 VirtIOS390Device *dev)
 697 {
 698     DeviceState *qdev = DEVICE(dev);
 699     char virtio_bus_name[] = "virtio-bus";
 700
 701     qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_S390_BUS,
 702                         qdev, virtio_bus_name);
 703 }
 704
 705 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 706 {
 707     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 708     BusClass *bus_class = BUS_CLASS(klass);
 709     bus_class->max_dev = 1;
 710     k->notify = virtio_s390_notify;
 711     k->get_features = virtio_s390_get_features;
 712 }
 713
 714 static const TypeInfo virtio_s390_bus_info = {
 715     .name          = TYPE_VIRTIO_S390_BUS,
 716     .parent        = TYPE_VIRTIO_BUS,
 717     .instance_size = sizeof(VirtioS390BusState),
 718     .class_init    = virtio_s390_bus_class_init,
 719 };
 720
 721 static void s390_virtio_register_types(void)
 722 {
 723     type_register_static(&virtio_s390_bus_info);
 724     type_register_static(&s390_virtio_bus_info);
 725     type_register_static(&virtio_s390_device_info);
 726     type_register_static(&s390_virtio_serial);
 727     type_register_static(&s390_virtio_blk);
 728     type_register_static(&s390_virtio_net);
 729     type_register_static(&s390_virtio_scsi);
 730 #ifdef CONFIG_VHOST_SCSI
 731     type_register_static(&s390_vhost_scsi);
 732 #endif
 733     type_register_static(&s390_virtio_rng);
 734     type_register_static(&s390_virtio_bridge_info);
 735 }
 736
 737 type_init(s390_virtio_register_types)