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     char *bus_name;
 201
 202     bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
 203
 204     /*
 205      * For command line compatibility, this sets the virtio-serial-device bus
 206      * name as before.
 207      */
 208     if (qdev->id) {
 209         bus_name = g_strdup_printf("%s.0", qdev->id);
 210         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 211         g_free(bus_name);
 212     }
 213
 214     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 215     if (qdev_init(vdev) < 0) {
 216         return -1;
 217     }
 218
 219     r = s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 220     if (!r) {
 221         bus->console = s390_dev;
 222     }
 223
 224     return r;
 225 }
 226
 227 static void s390_virtio_serial_instance_init(Object *obj)
 228 {
 229     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
 230     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL);
 231     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 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
 239     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 240     if (qdev_init(vdev) < 0) {
 241         return -1;
 242     }
 243
 244     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 245 }
 246
 247 static void s390_virtio_scsi_instance_init(Object *obj)
 248 {
 249     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 250     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI);
 251     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 252 }
 253
 254 #ifdef CONFIG_VHOST_SCSI
 255 static int s390_vhost_scsi_init(VirtIOS390Device *s390_dev)
 256 {
 257     VHostSCSIS390 *dev = VHOST_SCSI_S390(s390_dev);
 258     DeviceState *vdev = DEVICE(&dev->vdev);
 259
 260     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 261     if (qdev_init(vdev) < 0) {
 262         return -1;
 263     }
 264
 265     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 266 }
 267
 268 static void s390_vhost_scsi_instance_init(Object *obj)
 269 {
 270     VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
 271     object_initialize(OBJECT(&dev->vdev), TYPE_VHOST_SCSI);
 272     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 273 }
 274 #endif
 275
 276
 277 static int s390_virtio_rng_init(VirtIOS390Device *s390_dev)
 278 {
 279     VirtIORNGS390 *dev = VIRTIO_RNG_S390(s390_dev);
 280     DeviceState *vdev = DEVICE(&dev->vdev);
 281
 282     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 283     if (qdev_init(vdev) < 0) {
 284         return -1;
 285     }
 286
 287     object_property_set_link(OBJECT(dev),
 288                              OBJECT(dev->vdev.conf.default_backend), "rng",
 289                              NULL);
 290
 291     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 292 }
 293
 294 static void s390_virtio_rng_instance_init(Object *obj)
 295 {
 296     VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
 297     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_RNG);
 298     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 299     object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
 300                              (Object **)&dev->vdev.conf.rng, NULL);
 301 }
 302
 303 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 304 {
 305     ram_addr_t token_off;
 306
 307     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 308                 (vq * VIRTIO_VQCONFIG_LEN) +
 309                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 310
 311     return ldq_be_phys(token_off);
 312 }
 313
 314 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 315 {
 316     VirtIODevice *vdev = dev->vdev;
 317     int num_vq;
 318
 319     for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
 320         if (!virtio_queue_get_num(vdev, num_vq)) {
 321             break;
 322         }
 323     }
 324
 325     return num_vq;
 326 }
 327
 328 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 329 {
 330     ram_addr_t r = bus->next_ring;
 331
 332     bus->next_ring += VIRTIO_RING_LEN;
 333     return r;
 334 }
 335
 336 void s390_virtio_device_sync(VirtIOS390Device *dev)
 337 {
 338     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 339     ram_addr_t cur_offs;
 340     uint8_t num_vq;
 341     int i;
 342
 343     virtio_reset(dev->vdev);
 344
 345     /* Sync dev space */
 346     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
 347
 348     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, s390_virtio_device_num_vq(dev));
 349     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
 350
 351     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
 352
 353     num_vq = s390_virtio_device_num_vq(dev);
 354     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
 355
 356     /* Sync virtqueues */
 357     for (i = 0; i < num_vq; i++) {
 358         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 359                         (i * VIRTIO_VQCONFIG_LEN);
 360         ram_addr_t vring;
 361
 362         vring = s390_virtio_next_ring(bus);
 363         virtio_queue_set_addr(dev->vdev, i, vring);
 364         virtio_queue_set_vector(dev->vdev, i, i);
 365         stq_be_phys(vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
 366         stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
 367     }
 368
 369     cur_offs = dev->dev_offs;
 370     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 371     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 372
 373     /* Sync feature bitmap */
 374     stl_le_phys(cur_offs, dev->host_features);
 375
 376     dev->feat_offs = cur_offs + dev->feat_len;
 377     cur_offs += dev->feat_len * 2;
 378
 379     /* Sync config space */
 380     virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
 381
 382     cpu_physical_memory_write(cur_offs,
 383                               dev->vdev->config, dev->vdev->config_len);
 384     cur_offs += dev->vdev->config_len;
 385 }
 386
 387 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 388 {
 389     VirtIODevice *vdev = dev->vdev;
 390     uint32_t features;
 391
 392     virtio_set_status(vdev, ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
 393
 394     /* Update guest supported feature bitmap */
 395
 396     features = bswap32(ldl_be_phys(dev->feat_offs));
 397     virtio_set_features(vdev, features);
 398 }
 399
 400 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
 401 {
 402     return bus->console;
 403 }
 404
 405 /* Find a device by vring address */
 406 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 407                                              ram_addr_t mem,
 408                                              int *vq_num)
 409 {
 410     BusChild *kid;
 411     int i;
 412
 413     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 414         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 415
 416         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 417             if (!virtio_queue_get_addr(dev->vdev, i))
 418                 break;
 419             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 420                 if (vq_num) {
 421                     *vq_num = i;
 422                 }
 423                 return dev;
 424             }
 425         }
 426     }
 427
 428     return NULL;
 429 }
 430
 431 /* Find a device by device descriptor location */
 432 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 433 {
 434     BusChild *kid;
 435
 436     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 437         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 438         if (dev->dev_offs == mem) {
 439             return dev;
 440         }
 441     }
 442
 443     return NULL;
 444 }
 445
 446 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 447  * be careful and test performance if you change this.
 448  */
 449 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 450 {
 451     return container_of(d, VirtIOS390Device, qdev);
 452 }
 453
 454 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 455 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 456 {
 457     return container_of(d, VirtIOS390Device, qdev);
 458 }
 459
 460 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 461 {
 462     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 463     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 464     S390CPU *cpu = s390_cpu_addr2state(0);
 465
 466     s390_virtio_irq(cpu, 0, token);
 467 }
 468
 469 static unsigned virtio_s390_get_features(DeviceState *d)
 470 {
 471     VirtIOS390Device *dev = to_virtio_s390_device(d);
 472     return dev->host_features;
 473 }
 474
 475 /**************** S390 Virtio Bus Device Descriptions *******************/
 476
 477 static Property s390_virtio_net_properties[] = {
 478     DEFINE_NIC_PROPERTIES(VirtIONetS390, vdev.nic_conf),
 479     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
 480     DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetS390, vdev.net_conf),
 481     DEFINE_PROP_END_OF_LIST(),
 482 };
 483
 484 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 485 {
 486     DeviceClass *dc = DEVICE_CLASS(klass);
 487     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 488
 489     k->init = s390_virtio_net_init;
 490     dc->props = s390_virtio_net_properties;
 491 }
 492
 493 static const TypeInfo s390_virtio_net = {
 494     .name          = TYPE_VIRTIO_NET_S390,
 495     .parent        = TYPE_VIRTIO_S390_DEVICE,
 496     .instance_size = sizeof(VirtIONetS390),
 497     .instance_init = s390_virtio_net_instance_init,
 498     .class_init    = s390_virtio_net_class_init,
 499 };
 500
 501 static Property s390_virtio_blk_properties[] = {
 502     DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkS390, blk),
 503     DEFINE_PROP_END_OF_LIST(),
 504 };
 505
 506 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 507 {
 508     DeviceClass *dc = DEVICE_CLASS(klass);
 509     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 510
 511     k->init = s390_virtio_blk_init;
 512     dc->props = s390_virtio_blk_properties;
 513 }
 514
 515 static const TypeInfo s390_virtio_blk = {
 516     .name          = "virtio-blk-s390",
 517     .parent        = TYPE_VIRTIO_S390_DEVICE,
 518     .instance_size = sizeof(VirtIOBlkS390),
 519     .instance_init = s390_virtio_blk_instance_init,
 520     .class_init    = s390_virtio_blk_class_init,
 521 };
 522
 523 static Property s390_virtio_serial_properties[] = {
 524     DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialS390, vdev.serial),
 525     DEFINE_PROP_END_OF_LIST(),
 526 };
 527
 528 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 529 {
 530     DeviceClass *dc = DEVICE_CLASS(klass);
 531     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 532
 533     k->init = s390_virtio_serial_init;
 534     dc->props = s390_virtio_serial_properties;
 535 }
 536
 537 static const TypeInfo s390_virtio_serial = {
 538     .name          = TYPE_VIRTIO_SERIAL_S390,
 539     .parent        = TYPE_VIRTIO_S390_DEVICE,
 540     .instance_size = sizeof(VirtIOSerialS390),
 541     .instance_init = s390_virtio_serial_instance_init,
 542     .class_init    = s390_virtio_serial_class_init,
 543 };
 544
 545 static Property s390_virtio_rng_properties[] = {
 546     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 547     DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGS390, vdev.conf),
 548     DEFINE_PROP_END_OF_LIST(),
 549 };
 550
 551 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 552 {
 553     DeviceClass *dc = DEVICE_CLASS(klass);
 554     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 555
 556     k->init = s390_virtio_rng_init;
 557     dc->props = s390_virtio_rng_properties;
 558 }
 559
 560 static const TypeInfo s390_virtio_rng = {
 561     .name          = TYPE_VIRTIO_RNG_S390,
 562     .parent        = TYPE_VIRTIO_S390_DEVICE,
 563     .instance_size = sizeof(VirtIORNGS390),
 564     .instance_init = s390_virtio_rng_instance_init,
 565     .class_init    = s390_virtio_rng_class_init,
 566 };
 567
 568 static int s390_virtio_busdev_init(DeviceState *dev)
 569 {
 570     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 571     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 572
 573     virtio_s390_bus_new(&_dev->bus, _dev);
 574
 575     return _info->init(_dev);
 576 }
 577
 578 static void s390_virtio_busdev_reset(DeviceState *dev)
 579 {
 580     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 581
 582     virtio_reset(_dev->vdev);
 583 }
 584
 585 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 586 {
 587     DeviceClass *dc = DEVICE_CLASS(klass);
 588
 589     dc->init = s390_virtio_busdev_init;
 590     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 591     dc->unplug = qdev_simple_unplug_cb;
 592     dc->reset = s390_virtio_busdev_reset;
 593 }
 594
 595 static const TypeInfo virtio_s390_device_info = {
 596     .name = TYPE_VIRTIO_S390_DEVICE,
 597     .parent = TYPE_DEVICE,
 598     .instance_size = sizeof(VirtIOS390Device),
 599     .class_init = virtio_s390_device_class_init,
 600     .class_size = sizeof(VirtIOS390DeviceClass),
 601     .abstract = true,
 602 };
 603
 604 static Property s390_virtio_scsi_properties[] = {
 605     DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIS390, vdev.parent_obj.conf),
 606     DEFINE_VIRTIO_SCSI_FEATURES(VirtIOS390Device, host_features),
 607     DEFINE_PROP_END_OF_LIST(),
 608 };
 609
 610 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 611 {
 612     DeviceClass *dc = DEVICE_CLASS(klass);
 613     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 614
 615     k->init = s390_virtio_scsi_init;
 616     dc->props = s390_virtio_scsi_properties;
 617 }
 618
 619 static const TypeInfo s390_virtio_scsi = {
 620     .name          = TYPE_VIRTIO_SCSI_S390,
 621     .parent        = TYPE_VIRTIO_S390_DEVICE,
 622     .instance_size = sizeof(VirtIOSCSIS390),
 623     .instance_init = s390_virtio_scsi_instance_init,
 624     .class_init    = s390_virtio_scsi_class_init,
 625 };
 626
 627 #ifdef CONFIG_VHOST_SCSI
 628 static Property s390_vhost_scsi_properties[] = {
 629     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 630     DEFINE_VHOST_SCSI_PROPERTIES(VHostSCSIS390, vdev.parent_obj.conf),
 631     DEFINE_PROP_END_OF_LIST(),
 632 };
 633
 634 static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
 635 {
 636     DeviceClass *dc = DEVICE_CLASS(klass);
 637     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 638
 639     k->init = s390_vhost_scsi_init;
 640     dc->props = s390_vhost_scsi_properties;
 641 }
 642
 643 static const TypeInfo s390_vhost_scsi = {
 644     .name          = TYPE_VHOST_SCSI_S390,
 645     .parent        = TYPE_VIRTIO_S390_DEVICE,
 646     .instance_size = sizeof(VHostSCSIS390),
 647     .instance_init = s390_vhost_scsi_instance_init,
 648     .class_init    = s390_vhost_scsi_class_init,
 649 };
 650 #endif
 651
 652 /***************** S390 Virtio Bus Bridge Device *******************/
 653 /* Only required to have the virtio bus as child in the system bus */
 654
 655 static int s390_virtio_bridge_init(SysBusDevice *dev)
 656 {
 657     /* nothing */
 658     return 0;
 659 }
 660
 661 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 662 {
 663     DeviceClass *dc = DEVICE_CLASS(klass);
 664     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 665
 666     k->init = s390_virtio_bridge_init;
 667     dc->no_user = 1;
 668 }
 669
 670 static const TypeInfo s390_virtio_bridge_info = {
 671     .name          = "s390-virtio-bridge",
 672     .parent        = TYPE_SYS_BUS_DEVICE,
 673     .instance_size = sizeof(SysBusDevice),
 674     .class_init    = s390_virtio_bridge_class_init,
 675 };
 676
 677 /* virtio-s390-bus */
 678
 679 static void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev)
 680 {
 681     DeviceState *qdev = DEVICE(dev);
 682     BusState *qbus;
 683     char virtio_bus_name[] = "virtio-bus";
 684
 685     qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_S390_BUS, qdev,
 686                         virtio_bus_name);
 687     qbus = BUS(bus);
 688     qbus->allow_hotplug = 1;
 689 }
 690
 691 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 692 {
 693     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 694     BusClass *bus_class = BUS_CLASS(klass);
 695     bus_class->max_dev = 1;
 696     k->notify = virtio_s390_notify;
 697     k->get_features = virtio_s390_get_features;
 698 }
 699
 700 static const TypeInfo virtio_s390_bus_info = {
 701     .name          = TYPE_VIRTIO_S390_BUS,
 702     .parent        = TYPE_VIRTIO_BUS,
 703     .instance_size = sizeof(VirtioS390BusState),
 704     .class_init    = virtio_s390_bus_class_init,
 705 };
 706
 707 static void s390_virtio_register_types(void)
 708 {
 709     type_register_static(&virtio_s390_bus_info);
 710     type_register_static(&s390_virtio_bus_info);
 711     type_register_static(&virtio_s390_device_info);
 712     type_register_static(&s390_virtio_serial);
 713     type_register_static(&s390_virtio_blk);
 714     type_register_static(&s390_virtio_net);
 715     type_register_static(&s390_virtio_scsi);
 716 #ifdef CONFIG_VHOST_SCSI
 717     type_register_static(&s390_vhost_scsi);
 718 #endif
 719     type_register_static(&s390_virtio_rng);
 720     type_register_static(&s390_virtio_bridge_info);
 721 }
 722
 723 type_init(s390_virtio_register_types)