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     VirtIONetS390 *dev = VIRTIO_NET_S390(s390_dev);
 156     DeviceState *vdev = DEVICE(&dev->vdev);
 157
 158     virtio_net_set_config_size(&dev->vdev, s390_dev->host_features);
 159     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 160     if (qdev_init(vdev) < 0) {
 161         return -1;
 162     }
 163
 164     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 165 }
 166
 167 static void s390_virtio_net_instance_init(Object *obj)
 168 {
 169     VirtIONetS390 *dev = VIRTIO_NET_S390(obj);
 170     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_NET);
 171     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 172 }
 173
 174 static int s390_virtio_blk_init(VirtIOS390Device *s390_dev)
 175 {
 176     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
 177     DeviceState *vdev = DEVICE(&dev->vdev);
 178     virtio_blk_set_conf(vdev, &(dev->blk));
 179     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 180     if (qdev_init(vdev) < 0) {
 181         return -1;
 182     }
 183     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 184 }
 185
 186 static void s390_virtio_blk_instance_init(Object *obj)
 187 {
 188     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
 189     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
 190     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 191 }
 192
 193 static int s390_virtio_serial_init(VirtIOS390Device *s390_dev)
 194 {
 195     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(s390_dev);
 196     DeviceState *vdev = DEVICE(&dev->vdev);
 197     DeviceState *qdev = DEVICE(s390_dev);
 198     VirtIOS390Bus *bus;
 199     int r;
 200
 201     bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
 202
 203     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 204     if (qdev_init(vdev) < 0) {
 205         return -1;
 206     }
 207
 208     r = s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 209     if (!r) {
 210         bus->console = s390_dev;
 211     }
 212
 213     return r;
 214 }
 215
 216 static void s390_virtio_serial_instance_init(Object *obj)
 217 {
 218     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
 219     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL);
 220     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 221 }
 222
 223 static int s390_virtio_scsi_init(VirtIOS390Device *s390_dev)
 224 {
 225     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
 226     DeviceState *vdev = DEVICE(&dev->vdev);
 227
 228     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 229     if (qdev_init(vdev) < 0) {
 230         return -1;
 231     }
 232
 233     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 234 }
 235
 236 static void s390_virtio_scsi_instance_init(Object *obj)
 237 {
 238     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 239     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI);
 240     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 241 }
 242
 243 #ifdef CONFIG_VHOST_SCSI
 244 static int s390_vhost_scsi_init(VirtIOS390Device *s390_dev)
 245 {
 246     VHostSCSIS390 *dev = VHOST_SCSI_S390(s390_dev);
 247     DeviceState *vdev = DEVICE(&dev->vdev);
 248
 249     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 250     if (qdev_init(vdev) < 0) {
 251         return -1;
 252     }
 253
 254     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 255 }
 256
 257 static void s390_vhost_scsi_instance_init(Object *obj)
 258 {
 259     VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
 260     object_initialize(OBJECT(&dev->vdev), TYPE_VHOST_SCSI);
 261     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 262 }
 263 #endif
 264
 265
 266 static int s390_virtio_rng_init(VirtIOS390Device *s390_dev)
 267 {
 268     VirtIORNGS390 *dev = VIRTIO_RNG_S390(s390_dev);
 269     DeviceState *vdev = DEVICE(&dev->vdev);
 270
 271     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 272     if (qdev_init(vdev) < 0) {
 273         return -1;
 274     }
 275
 276     object_property_set_link(OBJECT(dev),
 277                              OBJECT(dev->vdev.conf.default_backend), "rng",
 278                              NULL);
 279
 280     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 281 }
 282
 283 static void s390_virtio_rng_instance_init(Object *obj)
 284 {
 285     VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
 286     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_RNG);
 287     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 288     object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
 289                              (Object **)&dev->vdev.conf.rng, NULL);
 290 }
 291
 292 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 293 {
 294     ram_addr_t token_off;
 295
 296     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 297                 (vq * VIRTIO_VQCONFIG_LEN) +
 298                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 299
 300     return ldq_be_phys(token_off);
 301 }
 302
 303 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 304 {
 305     VirtIODevice *vdev = dev->vdev;
 306     int num_vq;
 307
 308     for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
 309         if (!virtio_queue_get_num(vdev, num_vq)) {
 310             break;
 311         }
 312     }
 313
 314     return num_vq;
 315 }
 316
 317 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 318 {
 319     ram_addr_t r = bus->next_ring;
 320
 321     bus->next_ring += VIRTIO_RING_LEN;
 322     return r;
 323 }
 324
 325 void s390_virtio_device_sync(VirtIOS390Device *dev)
 326 {
 327     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 328     ram_addr_t cur_offs;
 329     uint8_t num_vq;
 330     int i;
 331
 332     virtio_reset(dev->vdev);
 333
 334     /* Sync dev space */
 335     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
 336
 337     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, s390_virtio_device_num_vq(dev));
 338     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
 339
 340     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
 341
 342     num_vq = s390_virtio_device_num_vq(dev);
 343     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
 344
 345     /* Sync virtqueues */
 346     for (i = 0; i < num_vq; i++) {
 347         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 348                         (i * VIRTIO_VQCONFIG_LEN);
 349         ram_addr_t vring;
 350
 351         vring = s390_virtio_next_ring(bus);
 352         virtio_queue_set_addr(dev->vdev, i, vring);
 353         virtio_queue_set_vector(dev->vdev, i, i);
 354         stq_be_phys(vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
 355         stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
 356     }
 357
 358     cur_offs = dev->dev_offs;
 359     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 360     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 361
 362     /* Sync feature bitmap */
 363     stl_le_phys(cur_offs, dev->host_features);
 364
 365     dev->feat_offs = cur_offs + dev->feat_len;
 366     cur_offs += dev->feat_len * 2;
 367
 368     /* Sync config space */
 369     virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
 370
 371     cpu_physical_memory_write(cur_offs,
 372                               dev->vdev->config, dev->vdev->config_len);
 373     cur_offs += dev->vdev->config_len;
 374 }
 375
 376 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 377 {
 378     VirtIODevice *vdev = dev->vdev;
 379     uint32_t features;
 380
 381     virtio_set_status(vdev, ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
 382
 383     /* Update guest supported feature bitmap */
 384
 385     features = bswap32(ldl_be_phys(dev->feat_offs));
 386     virtio_set_features(vdev, features);
 387 }
 388
 389 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
 390 {
 391     return bus->console;
 392 }
 393
 394 /* Find a device by vring address */
 395 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 396                                              ram_addr_t mem,
 397                                              int *vq_num)
 398 {
 399     BusChild *kid;
 400     int i;
 401
 402     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 403         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 404
 405         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 406             if (!virtio_queue_get_addr(dev->vdev, i))
 407                 break;
 408             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 409                 if (vq_num) {
 410                     *vq_num = i;
 411                 }
 412                 return dev;
 413             }
 414         }
 415     }
 416
 417     return NULL;
 418 }
 419
 420 /* Find a device by device descriptor location */
 421 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 422 {
 423     BusChild *kid;
 424
 425     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 426         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 427         if (dev->dev_offs == mem) {
 428             return dev;
 429         }
 430     }
 431
 432     return NULL;
 433 }
 434
 435 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 436  * be careful and test performance if you change this.
 437  */
 438 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 439 {
 440     return container_of(d, VirtIOS390Device, qdev);
 441 }
 442
 443 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 444 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 445 {
 446     return container_of(d, VirtIOS390Device, qdev);
 447 }
 448
 449 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 450 {
 451     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 452     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 453     S390CPU *cpu = s390_cpu_addr2state(0);
 454
 455     s390_virtio_irq(cpu, 0, token);
 456 }
 457
 458 static unsigned virtio_s390_get_features(DeviceState *d)
 459 {
 460     VirtIOS390Device *dev = to_virtio_s390_device(d);
 461     return dev->host_features;
 462 }
 463
 464 /**************** S390 Virtio Bus Device Descriptions *******************/
 465
 466 static Property s390_virtio_net_properties[] = {
 467     DEFINE_NIC_PROPERTIES(VirtIONetS390, vdev.nic_conf),
 468     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
 469     DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetS390, vdev.net_conf),
 470     DEFINE_PROP_END_OF_LIST(),
 471 };
 472
 473 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 474 {
 475     DeviceClass *dc = DEVICE_CLASS(klass);
 476     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 477
 478     k->init = s390_virtio_net_init;
 479     dc->props = s390_virtio_net_properties;
 480 }
 481
 482 static const TypeInfo s390_virtio_net = {
 483     .name          = TYPE_VIRTIO_NET_S390,
 484     .parent        = TYPE_VIRTIO_S390_DEVICE,
 485     .instance_size = sizeof(VirtIONetS390),
 486     .instance_init = s390_virtio_net_instance_init,
 487     .class_init    = s390_virtio_net_class_init,
 488 };
 489
 490 static Property s390_virtio_blk_properties[] = {
 491     DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkS390, blk),
 492     DEFINE_PROP_END_OF_LIST(),
 493 };
 494
 495 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 496 {
 497     DeviceClass *dc = DEVICE_CLASS(klass);
 498     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 499
 500     k->init = s390_virtio_blk_init;
 501     dc->props = s390_virtio_blk_properties;
 502 }
 503
 504 static const TypeInfo s390_virtio_blk = {
 505     .name          = "virtio-blk-s390",
 506     .parent        = TYPE_VIRTIO_S390_DEVICE,
 507     .instance_size = sizeof(VirtIOBlkS390),
 508     .instance_init = s390_virtio_blk_instance_init,
 509     .class_init    = s390_virtio_blk_class_init,
 510 };
 511
 512 static Property s390_virtio_serial_properties[] = {
 513     DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialS390, vdev.serial),
 514     DEFINE_PROP_END_OF_LIST(),
 515 };
 516
 517 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 518 {
 519     DeviceClass *dc = DEVICE_CLASS(klass);
 520     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 521
 522     k->init = s390_virtio_serial_init;
 523     dc->props = s390_virtio_serial_properties;
 524 }
 525
 526 static const TypeInfo s390_virtio_serial = {
 527     .name          = TYPE_VIRTIO_SERIAL_S390,
 528     .parent        = TYPE_VIRTIO_S390_DEVICE,
 529     .instance_size = sizeof(VirtIOSerialS390),
 530     .instance_init = s390_virtio_serial_instance_init,
 531     .class_init    = s390_virtio_serial_class_init,
 532 };
 533
 534 static Property s390_virtio_rng_properties[] = {
 535     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 536     DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGS390, vdev.conf),
 537     DEFINE_PROP_END_OF_LIST(),
 538 };
 539
 540 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 541 {
 542     DeviceClass *dc = DEVICE_CLASS(klass);
 543     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 544
 545     k->init = s390_virtio_rng_init;
 546     dc->props = s390_virtio_rng_properties;
 547 }
 548
 549 static const TypeInfo s390_virtio_rng = {
 550     .name          = TYPE_VIRTIO_RNG_S390,
 551     .parent        = TYPE_VIRTIO_S390_DEVICE,
 552     .instance_size = sizeof(VirtIORNGS390),
 553     .instance_init = s390_virtio_rng_instance_init,
 554     .class_init    = s390_virtio_rng_class_init,
 555 };
 556
 557 static int s390_virtio_busdev_init(DeviceState *dev)
 558 {
 559     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 560     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 561
 562     virtio_s390_bus_new(&_dev->bus, _dev);
 563
 564     return _info->init(_dev);
 565 }
 566
 567 static void s390_virtio_busdev_reset(DeviceState *dev)
 568 {
 569     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 570
 571     virtio_reset(_dev->vdev);
 572 }
 573
 574 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 575 {
 576     DeviceClass *dc = DEVICE_CLASS(klass);
 577
 578     dc->init = s390_virtio_busdev_init;
 579     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 580     dc->unplug = qdev_simple_unplug_cb;
 581     dc->reset = s390_virtio_busdev_reset;
 582 }
 583
 584 static const TypeInfo virtio_s390_device_info = {
 585     .name = TYPE_VIRTIO_S390_DEVICE,
 586     .parent = TYPE_DEVICE,
 587     .instance_size = sizeof(VirtIOS390Device),
 588     .class_init = virtio_s390_device_class_init,
 589     .class_size = sizeof(VirtIOS390DeviceClass),
 590     .abstract = true,
 591 };
 592
 593 static Property s390_virtio_scsi_properties[] = {
 594     DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIS390, vdev.parent_obj.conf),
 595     DEFINE_VIRTIO_SCSI_FEATURES(VirtIOS390Device, host_features),
 596     DEFINE_PROP_END_OF_LIST(),
 597 };
 598
 599 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 600 {
 601     DeviceClass *dc = DEVICE_CLASS(klass);
 602     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 603
 604     k->init = s390_virtio_scsi_init;
 605     dc->props = s390_virtio_scsi_properties;
 606 }
 607
 608 static const TypeInfo s390_virtio_scsi = {
 609     .name          = TYPE_VIRTIO_SCSI_S390,
 610     .parent        = TYPE_VIRTIO_S390_DEVICE,
 611     .instance_size = sizeof(VirtIOSCSIS390),
 612     .instance_init = s390_virtio_scsi_instance_init,
 613     .class_init    = s390_virtio_scsi_class_init,
 614 };
 615
 616 #ifdef CONFIG_VHOST_SCSI
 617 static Property s390_vhost_scsi_properties[] = {
 618     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 619     DEFINE_VHOST_SCSI_PROPERTIES(VHostSCSIS390, vdev.parent_obj.conf),
 620     DEFINE_PROP_END_OF_LIST(),
 621 };
 622
 623 static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
 624 {
 625     DeviceClass *dc = DEVICE_CLASS(klass);
 626     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 627
 628     k->init = s390_vhost_scsi_init;
 629     dc->props = s390_vhost_scsi_properties;
 630 }
 631
 632 static const TypeInfo s390_vhost_scsi = {
 633     .name          = TYPE_VHOST_SCSI_S390,
 634     .parent        = TYPE_VIRTIO_S390_DEVICE,
 635     .instance_size = sizeof(VHostSCSIS390),
 636     .instance_init = s390_vhost_scsi_instance_init,
 637     .class_init    = s390_vhost_scsi_class_init,
 638 };
 639 #endif
 640
 641 /***************** S390 Virtio Bus Bridge Device *******************/
 642 /* Only required to have the virtio bus as child in the system bus */
 643
 644 static int s390_virtio_bridge_init(SysBusDevice *dev)
 645 {
 646     /* nothing */
 647     return 0;
 648 }
 649
 650 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 651 {
 652     DeviceClass *dc = DEVICE_CLASS(klass);
 653     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 654
 655     k->init = s390_virtio_bridge_init;
 656     dc->no_user = 1;
 657 }
 658
 659 static const TypeInfo s390_virtio_bridge_info = {
 660     .name          = "s390-virtio-bridge",
 661     .parent        = TYPE_SYS_BUS_DEVICE,
 662     .instance_size = sizeof(SysBusDevice),
 663     .class_init    = s390_virtio_bridge_class_init,
 664 };
 665
 666 /* virtio-s390-bus */
 667
 668 static void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev)
 669 {
 670     DeviceState *qdev = DEVICE(dev);
 671     BusState *qbus;
 672     char virtio_bus_name[] = "virtio-bus";
 673
 674     qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_S390_BUS, qdev,
 675                         virtio_bus_name);
 676     qbus = BUS(bus);
 677     qbus->allow_hotplug = 1;
 678 }
 679
 680 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 681 {
 682     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 683     BusClass *bus_class = BUS_CLASS(klass);
 684     bus_class->max_dev = 1;
 685     k->notify = virtio_s390_notify;
 686     k->get_features = virtio_s390_get_features;
 687 }
 688
 689 static const TypeInfo virtio_s390_bus_info = {
 690     .name          = TYPE_VIRTIO_S390_BUS,
 691     .parent        = TYPE_VIRTIO_BUS,
 692     .instance_size = sizeof(VirtioS390BusState),
 693     .class_init    = virtio_s390_bus_class_init,
 694 };
 695
 696 static void s390_virtio_register_types(void)
 697 {
 698     type_register_static(&virtio_s390_bus_info);
 699     type_register_static(&s390_virtio_bus_info);
 700     type_register_static(&virtio_s390_device_info);
 701     type_register_static(&s390_virtio_serial);
 702     type_register_static(&s390_virtio_blk);
 703     type_register_static(&s390_virtio_net);
 704     type_register_static(&s390_virtio_scsi);
 705 #ifdef CONFIG_VHOST_SCSI
 706     type_register_static(&s390_vhost_scsi);
 707 #endif
 708     type_register_static(&s390_virtio_rng);
 709     type_register_static(&s390_virtio_bridge_info);
 710 }
 711
 712 type_init(s390_virtio_register_types)