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 #define VIRTIO_EXT_CODE   0x2603
  49
  50 static void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev);
  51
  52 static const TypeInfo s390_virtio_bus_info = {
  53     .name = TYPE_S390_VIRTIO_BUS,
  54     .parent = TYPE_BUS,
  55     .instance_size = sizeof(VirtIOS390Bus),
  56 };
  57
  58 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);
  59
  60 /* length of VirtIO device pages */
  61 const hwaddr virtio_size = S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
  62
  63 static void s390_virtio_bus_reset(void *opaque)
  64 {
  65     VirtIOS390Bus *bus = opaque;
  66     bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
  67 }
  68
  69 void s390_virtio_reset_idx(VirtIOS390Device *dev)
  70 {
  71     int i;
  72     hwaddr idx_addr;
  73     uint8_t num_vq;
  74
  75     num_vq = s390_virtio_device_num_vq(dev);
  76     for (i = 0; i < num_vq; i++) {
  77         idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
  78             VIRTIO_VRING_AVAIL_IDX_OFFS;
  79         stw_phys(idx_addr, 0);
  80         idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
  81             VIRTIO_VRING_USED_IDX_OFFS;
  82         stw_phys(idx_addr, 0);
  83     }
  84 }
  85
  86 VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
  87 {
  88     VirtIOS390Bus *bus;
  89     BusState *_bus;
  90     DeviceState *dev;
  91
  92     /* Create bridge device */
  93     dev = qdev_create(NULL, "s390-virtio-bridge");
  94     qdev_init_nofail(dev);
  95
  96     /* Create bus on bridge device */
  97
  98     _bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
  99     bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);
 100
 101     bus->dev_page = *ram_size;
 102     bus->dev_offs = bus->dev_page;
 103     bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
 104
 105     /* Enable hotplugging */
 106     _bus->allow_hotplug = 1;
 107
 108     /* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
 109     *ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
 110
 111     qemu_register_reset(s390_virtio_bus_reset, bus);
 112     return bus;
 113 }
 114
 115 static void s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token)
 116 {
 117     if (kvm_enabled()) {
 118         kvm_s390_virtio_irq(cpu, config_change, token);
 119     } else {
 120         cpu_inject_ext(cpu, VIRTIO_EXT_CODE, config_change, token);
 121     }
 122 }
 123
 124 static int s390_virtio_device_init(VirtIOS390Device *dev, VirtIODevice *vdev)
 125 {
 126     VirtIOS390Bus *bus;
 127     int dev_len;
 128
 129     bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 130     dev->vdev = vdev;
 131     dev->dev_offs = bus->dev_offs;
 132     dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
 133
 134     dev_len = VIRTIO_DEV_OFFS_CONFIG;
 135     dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
 136     dev_len += dev->feat_len * 2;
 137     dev_len += virtio_bus_get_vdev_config_len(&dev->bus);
 138
 139     bus->dev_offs += dev_len;
 140
 141     dev->host_features = virtio_bus_get_vdev_features(&dev->bus,
 142                                                       dev->host_features);
 143     s390_virtio_device_sync(dev);
 144     s390_virtio_reset_idx(dev);
 145     if (dev->qdev.hotplugged) {
 146         S390CPU *cpu = s390_cpu_addr2state(0);
 147         s390_virtio_irq(cpu, VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
 148     }
 149
 150     return 0;
 151 }
 152
 153 static int s390_virtio_net_init(VirtIOS390Device *s390_dev)
 154 {
 155     DeviceState *qdev = DEVICE(s390_dev);
 156     VirtIONetS390 *dev = VIRTIO_NET_S390(s390_dev);
 157     DeviceState *vdev = DEVICE(&dev->vdev);
 158
 159     virtio_net_set_config_size(&dev->vdev, s390_dev->host_features);
 160     virtio_net_set_netclient_name(&dev->vdev, qdev->id,
 161                                   object_get_typename(OBJECT(qdev)));
 162     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 163     if (qdev_init(vdev) < 0) {
 164         return -1;
 165     }
 166
 167     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 168 }
 169
 170 static void s390_virtio_net_instance_init(Object *obj)
 171 {
 172     VirtIONetS390 *dev = VIRTIO_NET_S390(obj);
 173     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_NET);
 174     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 175 }
 176
 177 static int s390_virtio_blk_init(VirtIOS390Device *s390_dev)
 178 {
 179     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
 180     DeviceState *vdev = DEVICE(&dev->vdev);
 181     virtio_blk_set_conf(vdev, &(dev->blk));
 182     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 183     if (qdev_init(vdev) < 0) {
 184         return -1;
 185     }
 186     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 187 }
 188
 189 static void s390_virtio_blk_instance_init(Object *obj)
 190 {
 191     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
 192     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
 193     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 194 }
 195
 196 static int s390_virtio_serial_init(VirtIOS390Device *s390_dev)
 197 {
 198     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(s390_dev);
 199     DeviceState *vdev = DEVICE(&dev->vdev);
 200     DeviceState *qdev = DEVICE(s390_dev);
 201     VirtIOS390Bus *bus;
 202     int r;
 203     char *bus_name;
 204
 205     bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
 206
 207     /*
 208      * For command line compatibility, this sets the virtio-serial-device bus
 209      * name as before.
 210      */
 211     if (qdev->id) {
 212         bus_name = g_strdup_printf("%s.0", qdev->id);
 213         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 214         g_free(bus_name);
 215     }
 216
 217     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 218     if (qdev_init(vdev) < 0) {
 219         return -1;
 220     }
 221
 222     r = s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 223     if (!r) {
 224         bus->console = s390_dev;
 225     }
 226
 227     return r;
 228 }
 229
 230 static void s390_virtio_serial_instance_init(Object *obj)
 231 {
 232     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
 233     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL);
 234     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 235 }
 236
 237 static int s390_virtio_scsi_init(VirtIOS390Device *s390_dev)
 238 {
 239     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
 240     DeviceState *vdev = DEVICE(&dev->vdev);
 241     DeviceState *qdev = DEVICE(s390_dev);
 242     char *bus_name;
 243
 244     /*
 245      * For command line compatibility, this sets the virtio-scsi-device bus
 246      * name as before.
 247      */
 248     if (qdev->id) {
 249         bus_name = g_strdup_printf("%s.0", qdev->id);
 250         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 251         g_free(bus_name);
 252     }
 253
 254     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 255     if (qdev_init(vdev) < 0) {
 256         return -1;
 257     }
 258
 259     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 260 }
 261
 262 static void s390_virtio_scsi_instance_init(Object *obj)
 263 {
 264     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 265     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI);
 266     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 267 }
 268
 269 #ifdef CONFIG_VHOST_SCSI
 270 static int s390_vhost_scsi_init(VirtIOS390Device *s390_dev)
 271 {
 272     VHostSCSIS390 *dev = VHOST_SCSI_S390(s390_dev);
 273     DeviceState *vdev = DEVICE(&dev->vdev);
 274
 275     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 276     if (qdev_init(vdev) < 0) {
 277         return -1;
 278     }
 279
 280     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 281 }
 282
 283 static void s390_vhost_scsi_instance_init(Object *obj)
 284 {
 285     VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
 286     object_initialize(OBJECT(&dev->vdev), TYPE_VHOST_SCSI);
 287     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 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.default_backend), "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(OBJECT(&dev->vdev), TYPE_VIRTIO_RNG);
 313     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 314     object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
 315                              (Object **)&dev->vdev.conf.rng, 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(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(dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
 362
 363     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, s390_virtio_device_num_vq(dev));
 364     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
 365
 366     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
 367
 368     num_vq = s390_virtio_device_num_vq(dev);
 369     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
 370
 371     /* Sync virtqueues */
 372     for (i = 0; i < num_vq; i++) {
 373         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 374                         (i * VIRTIO_VQCONFIG_LEN);
 375         ram_addr_t vring;
 376
 377         vring = s390_virtio_next_ring(bus);
 378         virtio_queue_set_addr(dev->vdev, i, vring);
 379         virtio_queue_set_vector(dev->vdev, i, i);
 380         stq_be_phys(vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
 381         stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
 382     }
 383
 384     cur_offs = dev->dev_offs;
 385     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 386     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 387
 388     /* Sync feature bitmap */
 389     stl_le_phys(cur_offs, dev->host_features);
 390
 391     dev->feat_offs = cur_offs + dev->feat_len;
 392     cur_offs += dev->feat_len * 2;
 393
 394     /* Sync config space */
 395     virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
 396
 397     cpu_physical_memory_write(cur_offs,
 398                               dev->vdev->config, dev->vdev->config_len);
 399     cur_offs += dev->vdev->config_len;
 400 }
 401
 402 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 403 {
 404     VirtIODevice *vdev = dev->vdev;
 405     uint32_t features;
 406
 407     virtio_set_status(vdev, ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
 408
 409     /* Update guest supported feature bitmap */
 410
 411     features = bswap32(ldl_be_phys(dev->feat_offs));
 412     virtio_set_features(vdev, features);
 413 }
 414
 415 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
 416 {
 417     return bus->console;
 418 }
 419
 420 /* Find a device by vring address */
 421 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 422                                              ram_addr_t mem,
 423                                              int *vq_num)
 424 {
 425     BusChild *kid;
 426     int i;
 427
 428     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 429         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 430
 431         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 432             if (!virtio_queue_get_addr(dev->vdev, i))
 433                 break;
 434             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 435                 if (vq_num) {
 436                     *vq_num = i;
 437                 }
 438                 return dev;
 439             }
 440         }
 441     }
 442
 443     return NULL;
 444 }
 445
 446 /* Find a device by device descriptor location */
 447 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 448 {
 449     BusChild *kid;
 450
 451     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 452         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 453         if (dev->dev_offs == mem) {
 454             return dev;
 455         }
 456     }
 457
 458     return NULL;
 459 }
 460
 461 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 462  * be careful and test performance if you change this.
 463  */
 464 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 465 {
 466     return container_of(d, VirtIOS390Device, qdev);
 467 }
 468
 469 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 470 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 471 {
 472     return container_of(d, VirtIOS390Device, qdev);
 473 }
 474
 475 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 476 {
 477     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 478     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 479     S390CPU *cpu = s390_cpu_addr2state(0);
 480
 481     s390_virtio_irq(cpu, 0, token);
 482 }
 483
 484 static unsigned virtio_s390_get_features(DeviceState *d)
 485 {
 486     VirtIOS390Device *dev = to_virtio_s390_device(d);
 487     return dev->host_features;
 488 }
 489
 490 /**************** S390 Virtio Bus Device Descriptions *******************/
 491
 492 static Property s390_virtio_net_properties[] = {
 493     DEFINE_NIC_PROPERTIES(VirtIONetS390, vdev.nic_conf),
 494     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
 495     DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetS390, vdev.net_conf),
 496     DEFINE_PROP_END_OF_LIST(),
 497 };
 498
 499 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 500 {
 501     DeviceClass *dc = DEVICE_CLASS(klass);
 502     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 503
 504     k->init = s390_virtio_net_init;
 505     dc->props = s390_virtio_net_properties;
 506 }
 507
 508 static const TypeInfo s390_virtio_net = {
 509     .name          = TYPE_VIRTIO_NET_S390,
 510     .parent        = TYPE_VIRTIO_S390_DEVICE,
 511     .instance_size = sizeof(VirtIONetS390),
 512     .instance_init = s390_virtio_net_instance_init,
 513     .class_init    = s390_virtio_net_class_init,
 514 };
 515
 516 static Property s390_virtio_blk_properties[] = {
 517     DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkS390, blk),
 518     DEFINE_PROP_END_OF_LIST(),
 519 };
 520
 521 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 522 {
 523     DeviceClass *dc = DEVICE_CLASS(klass);
 524     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 525
 526     k->init = s390_virtio_blk_init;
 527     dc->props = s390_virtio_blk_properties;
 528 }
 529
 530 static const TypeInfo s390_virtio_blk = {
 531     .name          = "virtio-blk-s390",
 532     .parent        = TYPE_VIRTIO_S390_DEVICE,
 533     .instance_size = sizeof(VirtIOBlkS390),
 534     .instance_init = s390_virtio_blk_instance_init,
 535     .class_init    = s390_virtio_blk_class_init,
 536 };
 537
 538 static Property s390_virtio_serial_properties[] = {
 539     DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialS390, vdev.serial),
 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_VIRTIO_RNG_PROPERTIES(VirtIORNGS390, vdev.conf),
 563     DEFINE_PROP_END_OF_LIST(),
 564 };
 565
 566 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 567 {
 568     DeviceClass *dc = DEVICE_CLASS(klass);
 569     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 570
 571     k->init = s390_virtio_rng_init;
 572     dc->props = s390_virtio_rng_properties;
 573 }
 574
 575 static const TypeInfo s390_virtio_rng = {
 576     .name          = TYPE_VIRTIO_RNG_S390,
 577     .parent        = TYPE_VIRTIO_S390_DEVICE,
 578     .instance_size = sizeof(VirtIORNGS390),
 579     .instance_init = s390_virtio_rng_instance_init,
 580     .class_init    = s390_virtio_rng_class_init,
 581 };
 582
 583 static int s390_virtio_busdev_init(DeviceState *dev)
 584 {
 585     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 586     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 587
 588     virtio_s390_bus_new(&_dev->bus, _dev);
 589
 590     return _info->init(_dev);
 591 }
 592
 593 static void s390_virtio_busdev_reset(DeviceState *dev)
 594 {
 595     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 596
 597     virtio_reset(_dev->vdev);
 598 }
 599
 600 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 601 {
 602     DeviceClass *dc = DEVICE_CLASS(klass);
 603
 604     dc->init = s390_virtio_busdev_init;
 605     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 606     dc->unplug = qdev_simple_unplug_cb;
 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_SCSI_PROPERTIES(VirtIOSCSIS390, vdev.parent_obj.conf),
 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_VHOST_SCSI_PROPERTIES(VHostSCSIS390, vdev.parent_obj.conf),
 646     DEFINE_PROP_END_OF_LIST(),
 647 };
 648
 649 static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
 650 {
 651     DeviceClass *dc = DEVICE_CLASS(klass);
 652     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 653
 654     k->init = s390_vhost_scsi_init;
 655     dc->props = s390_vhost_scsi_properties;
 656 }
 657
 658 static const TypeInfo s390_vhost_scsi = {
 659     .name          = TYPE_VHOST_SCSI_S390,
 660     .parent        = TYPE_VIRTIO_S390_DEVICE,
 661     .instance_size = sizeof(VHostSCSIS390),
 662     .instance_init = s390_vhost_scsi_instance_init,
 663     .class_init    = s390_vhost_scsi_class_init,
 664 };
 665 #endif
 666
 667 /***************** S390 Virtio Bus Bridge Device *******************/
 668 /* Only required to have the virtio bus as child in the system bus */
 669
 670 static int s390_virtio_bridge_init(SysBusDevice *dev)
 671 {
 672     /* nothing */
 673     return 0;
 674 }
 675
 676 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 677 {
 678     DeviceClass *dc = DEVICE_CLASS(klass);
 679     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 680
 681     k->init = s390_virtio_bridge_init;
 682     dc->no_user = 1;
 683 }
 684
 685 static const TypeInfo s390_virtio_bridge_info = {
 686     .name          = "s390-virtio-bridge",
 687     .parent        = TYPE_SYS_BUS_DEVICE,
 688     .instance_size = sizeof(SysBusDevice),
 689     .class_init    = s390_virtio_bridge_class_init,
 690 };
 691
 692 /* virtio-s390-bus */
 693
 694 static void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev)
 695 {
 696     DeviceState *qdev = DEVICE(dev);
 697     BusState *qbus;
 698     char virtio_bus_name[] = "virtio-bus";
 699
 700     qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_S390_BUS, qdev,
 701                         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)