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         address_space_stw(&address_space_memory, idx_addr, 0,
  79                           MEMTXATTRS_UNSPECIFIED, NULL);
  80         idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
  81             VIRTIO_VRING_USED_IDX_OFFS;
  82         address_space_stw(&address_space_memory, idx_addr, 0,
  83                           MEMTXATTRS_UNSPECIFIED, NULL);
  84     }
  85 }
  86
  87 VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
  88 {
  89     VirtIOS390Bus *bus;
  90     BusState *_bus;
  91     DeviceState *dev;
  92
  93     /* Create bridge device */
  94     dev = qdev_create(NULL, "s390-virtio-bridge");
  95     qdev_init_nofail(dev);
  96
  97     /* Create bus on bridge device */
  98
  99     _bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
 100     bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);
 101
 102     bus->dev_page = *ram_size;
 103     bus->dev_offs = bus->dev_page;
 104     bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
 105
 106     /* Enable hotplugging */
 107     qbus_set_hotplug_handler(_bus, dev, &error_abort);
 108
 109     /* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
 110     *ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
 111
 112     qemu_register_reset(s390_virtio_bus_reset, bus);
 113     return bus;
 114 }
 115
 116 static void s390_virtio_device_init(VirtIOS390Device *dev,
 117                                     VirtIODevice *vdev)
 118 {
 119     VirtIOS390Bus *bus;
 120     int dev_len;
 121
 122     bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 123     dev->vdev = vdev;
 124     dev->dev_offs = bus->dev_offs;
 125     dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
 126
 127     dev_len = VIRTIO_DEV_OFFS_CONFIG;
 128     dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
 129     dev_len += dev->feat_len * 2;
 130     dev_len += virtio_bus_get_vdev_config_len(&dev->bus);
 131
 132     bus->dev_offs += dev_len;
 133
 134     dev->host_features = virtio_bus_get_vdev_features(&dev->bus,
 135                                                       dev->host_features);
 136     s390_virtio_device_sync(dev);
 137     s390_virtio_reset_idx(dev);
 138     if (dev->qdev.hotplugged) {
 139         s390_virtio_irq(VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
 140     }
 141 }
 142
 143 static void s390_virtio_net_realize(VirtIOS390Device *s390_dev, Error **errp)
 144 {
 145     DeviceState *qdev = DEVICE(s390_dev);
 146     VirtIONetS390 *dev = VIRTIO_NET_S390(s390_dev);
 147     DeviceState *vdev = DEVICE(&dev->vdev);
 148     Error *err = NULL;
 149
 150     virtio_net_set_config_size(&dev->vdev, s390_dev->host_features);
 151     virtio_net_set_netclient_name(&dev->vdev, qdev->id,
 152                                   object_get_typename(OBJECT(qdev)));
 153     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 154     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 155     if (err) {
 156         error_propagate(errp, err);
 157         return;
 158     }
 159
 160     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 161 }
 162
 163 static void s390_virtio_net_instance_init(Object *obj)
 164 {
 165     VirtIONetS390 *dev = VIRTIO_NET_S390(obj);
 166
 167     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 168                                 TYPE_VIRTIO_NET);
 169     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 170                               "bootindex", &error_abort);
 171 }
 172
 173 static void s390_virtio_blk_realize(VirtIOS390Device *s390_dev, Error **errp)
 174 {
 175     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
 176     DeviceState *vdev = DEVICE(&dev->vdev);
 177     Error *err = NULL;
 178
 179     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 180     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 181     if (err) {
 182         error_propagate(errp, err);
 183         return;
 184     }
 185     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 186 }
 187
 188 static void s390_virtio_blk_instance_init(Object *obj)
 189 {
 190     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
 191
 192     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 193                                 TYPE_VIRTIO_BLK);
 194     object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
 195                               &error_abort);
 196     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 197                               "bootindex", &error_abort);
 198 }
 199
 200 static void s390_virtio_serial_realize(VirtIOS390Device *s390_dev, Error **errp)
 201 {
 202     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(s390_dev);
 203     DeviceState *vdev = DEVICE(&dev->vdev);
 204     DeviceState *qdev = DEVICE(s390_dev);
 205     Error *err = NULL;
 206     VirtIOS390Bus *bus;
 207     char *bus_name;
 208
 209     bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
 210
 211     /*
 212      * For command line compatibility, this sets the virtio-serial-device bus
 213      * name as before.
 214      */
 215     if (qdev->id) {
 216         bus_name = g_strdup_printf("%s.0", qdev->id);
 217         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 218         g_free(bus_name);
 219     }
 220
 221     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 222     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 223     if (err) {
 224         error_propagate(errp, err);
 225         return;
 226     }
 227
 228     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 229     bus->console = s390_dev;
 230 }
 231
 232 static void s390_virtio_serial_instance_init(Object *obj)
 233 {
 234     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
 235
 236     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 237                                 TYPE_VIRTIO_SERIAL);
 238 }
 239
 240 static void s390_virtio_scsi_realize(VirtIOS390Device *s390_dev, Error **errp)
 241 {
 242     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
 243     DeviceState *vdev = DEVICE(&dev->vdev);
 244     DeviceState *qdev = DEVICE(s390_dev);
 245     Error *err = NULL;
 246     char *bus_name;
 247
 248     /*
 249      * For command line compatibility, this sets the virtio-scsi-device bus
 250      * name as before.
 251      */
 252     if (qdev->id) {
 253         bus_name = g_strdup_printf("%s.0", qdev->id);
 254         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 255         g_free(bus_name);
 256     }
 257
 258     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 259     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 260     if (err) {
 261         error_propagate(errp, err);
 262         return;
 263     }
 264
 265     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 266 }
 267
 268 static void s390_virtio_scsi_instance_init(Object *obj)
 269 {
 270     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 271
 272     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 273                                 TYPE_VIRTIO_SCSI);
 274 }
 275
 276 #ifdef CONFIG_VHOST_SCSI
 277 static void s390_vhost_scsi_realize(VirtIOS390Device *s390_dev, Error **errp)
 278 {
 279     VHostSCSIS390 *dev = VHOST_SCSI_S390(s390_dev);
 280     DeviceState *vdev = DEVICE(&dev->vdev);
 281     Error *err = NULL;
 282
 283     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 284     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 285     if (err) {
 286         error_propagate(errp, err);
 287         return;
 288     }
 289
 290     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 291 }
 292
 293 static void s390_vhost_scsi_instance_init(Object *obj)
 294 {
 295     VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
 296
 297     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 298                                 TYPE_VHOST_SCSI);
 299 }
 300 #endif
 301
 302
 303 static void s390_virtio_rng_realize(VirtIOS390Device *s390_dev, Error **errp)
 304 {
 305     VirtIORNGS390 *dev = VIRTIO_RNG_S390(s390_dev);
 306     DeviceState *vdev = DEVICE(&dev->vdev);
 307     Error *err = NULL;
 308
 309     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 310     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 311     if (err) {
 312         error_propagate(errp, err);
 313         return;
 314     }
 315
 316     object_property_set_link(OBJECT(dev),
 317                              OBJECT(dev->vdev.conf.rng), "rng",
 318                              NULL);
 319
 320     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 321 }
 322
 323 static void s390_virtio_rng_instance_init(Object *obj)
 324 {
 325     VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
 326
 327     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 328                                 TYPE_VIRTIO_RNG);
 329     object_property_add_alias(obj, "rng", OBJECT(&dev->vdev),
 330                               "rng", &error_abort);
 331 }
 332
 333 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 334 {
 335     ram_addr_t token_off;
 336
 337     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 338                 (vq * VIRTIO_VQCONFIG_LEN) +
 339                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 340
 341     return address_space_ldq_be(&address_space_memory, token_off,
 342                                 MEMTXATTRS_UNSPECIFIED, NULL);
 343 }
 344
 345 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 346 {
 347     VirtIODevice *vdev = dev->vdev;
 348     int num_vq;
 349
 350     for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
 351         if (!virtio_queue_get_num(vdev, num_vq)) {
 352             break;
 353         }
 354     }
 355
 356     return num_vq;
 357 }
 358
 359 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 360 {
 361     ram_addr_t r = bus->next_ring;
 362
 363     bus->next_ring += VIRTIO_RING_LEN;
 364     return r;
 365 }
 366
 367 void s390_virtio_device_sync(VirtIOS390Device *dev)
 368 {
 369     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 370     ram_addr_t cur_offs;
 371     uint8_t num_vq;
 372     int i;
 373
 374     virtio_reset(dev->vdev);
 375
 376     /* Sync dev space */
 377     address_space_stb(&address_space_memory,
 378                       dev->dev_offs + VIRTIO_DEV_OFFS_TYPE,
 379                       dev->vdev->device_id,
 380                       MEMTXATTRS_UNSPECIFIED,
 381                       NULL);
 382
 383     address_space_stb(&address_space_memory,
 384                       dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ,
 385                       s390_virtio_device_num_vq(dev),
 386                       MEMTXATTRS_UNSPECIFIED,
 387                       NULL);
 388     address_space_stb(&address_space_memory,
 389                       dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN,
 390                       dev->feat_len,
 391                       MEMTXATTRS_UNSPECIFIED,
 392                       NULL);
 393
 394     address_space_stb(&address_space_memory,
 395                       dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN,
 396                       dev->vdev->config_len,
 397                       MEMTXATTRS_UNSPECIFIED,
 398                       NULL);
 399
 400     num_vq = s390_virtio_device_num_vq(dev);
 401     address_space_stb(&address_space_memory,
 402                       dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq,
 403                       MEMTXATTRS_UNSPECIFIED, NULL);
 404
 405     /* Sync virtqueues */
 406     for (i = 0; i < num_vq; i++) {
 407         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 408                         (i * VIRTIO_VQCONFIG_LEN);
 409         ram_addr_t vring;
 410
 411         vring = s390_virtio_next_ring(bus);
 412         virtio_queue_set_addr(dev->vdev, i, vring);
 413         virtio_queue_set_vector(dev->vdev, i, i);
 414         address_space_stq_be(&address_space_memory,
 415                              vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring,
 416                              MEMTXATTRS_UNSPECIFIED, NULL);
 417         address_space_stw_be(&address_space_memory,
 418                              vq + VIRTIO_VQCONFIG_OFFS_NUM,
 419                              virtio_queue_get_num(dev->vdev, i),
 420                              MEMTXATTRS_UNSPECIFIED,
 421                              NULL);
 422     }
 423
 424     cur_offs = dev->dev_offs;
 425     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 426     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 427
 428     /* Sync feature bitmap */
 429     address_space_stl_le(&address_space_memory, cur_offs, dev->host_features,
 430                          MEMTXATTRS_UNSPECIFIED, NULL);
 431
 432     dev->feat_offs = cur_offs + dev->feat_len;
 433     cur_offs += dev->feat_len * 2;
 434
 435     /* Sync config space */
 436     virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
 437
 438     cpu_physical_memory_write(cur_offs,
 439                               dev->vdev->config, dev->vdev->config_len);
 440     cur_offs += dev->vdev->config_len;
 441 }
 442
 443 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 444 {
 445     VirtIODevice *vdev = dev->vdev;
 446     uint32_t features;
 447
 448     virtio_set_status(vdev,
 449                       address_space_ldub(&address_space_memory,
 450                                          dev->dev_offs + VIRTIO_DEV_OFFS_STATUS,
 451                                          MEMTXATTRS_UNSPECIFIED, NULL));
 452
 453     /* Update guest supported feature bitmap */
 454
 455     features = bswap32(address_space_ldl_be(&address_space_memory,
 456                                             dev->feat_offs,
 457                                             MEMTXATTRS_UNSPECIFIED, NULL));
 458     virtio_set_features(vdev, features);
 459 }
 460
 461 /* Find a device by vring address */
 462 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 463                                              ram_addr_t mem,
 464                                              int *vq_num)
 465 {
 466     BusChild *kid;
 467     int i;
 468
 469     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 470         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 471
 472         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 473             if (!virtio_queue_get_addr(dev->vdev, i))
 474                 break;
 475             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 476                 if (vq_num) {
 477                     *vq_num = i;
 478                 }
 479                 return dev;
 480             }
 481         }
 482     }
 483
 484     return NULL;
 485 }
 486
 487 /* Find a device by device descriptor location */
 488 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 489 {
 490     BusChild *kid;
 491
 492     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 493         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 494         if (dev->dev_offs == mem) {
 495             return dev;
 496         }
 497     }
 498
 499     return NULL;
 500 }
 501
 502 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 503  * be careful and test performance if you change this.
 504  */
 505 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 506 {
 507     return container_of(d, VirtIOS390Device, qdev);
 508 }
 509
 510 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 511 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 512 {
 513     return container_of(d, VirtIOS390Device, qdev);
 514 }
 515
 516 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 517 {
 518     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 519     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 520
 521     s390_virtio_irq(0, token);
 522 }
 523
 524 static unsigned virtio_s390_get_features(DeviceState *d)
 525 {
 526     VirtIOS390Device *dev = to_virtio_s390_device(d);
 527     return dev->host_features;
 528 }
 529
 530 /**************** S390 Virtio Bus Device Descriptions *******************/
 531
 532 static Property s390_virtio_net_properties[] = {
 533     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
 534     DEFINE_PROP_END_OF_LIST(),
 535 };
 536
 537 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 538 {
 539     DeviceClass *dc = DEVICE_CLASS(klass);
 540     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 541
 542     k->realize = s390_virtio_net_realize;
 543     dc->props = s390_virtio_net_properties;
 544     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
 545 }
 546
 547 static const TypeInfo s390_virtio_net = {
 548     .name          = TYPE_VIRTIO_NET_S390,
 549     .parent        = TYPE_VIRTIO_S390_DEVICE,
 550     .instance_size = sizeof(VirtIONetS390),
 551     .instance_init = s390_virtio_net_instance_init,
 552     .class_init    = s390_virtio_net_class_init,
 553 };
 554
 555 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 556 {
 557     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 558     DeviceClass *dc = DEVICE_CLASS(klass);
 559
 560     k->realize = s390_virtio_blk_realize;
 561     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 562 }
 563
 564 static const TypeInfo s390_virtio_blk = {
 565     .name          = "virtio-blk-s390",
 566     .parent        = TYPE_VIRTIO_S390_DEVICE,
 567     .instance_size = sizeof(VirtIOBlkS390),
 568     .instance_init = s390_virtio_blk_instance_init,
 569     .class_init    = s390_virtio_blk_class_init,
 570 };
 571
 572 static Property s390_virtio_serial_properties[] = {
 573     DEFINE_PROP_END_OF_LIST(),
 574 };
 575
 576 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 577 {
 578     DeviceClass *dc = DEVICE_CLASS(klass);
 579     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 580
 581     k->realize = s390_virtio_serial_realize;
 582     dc->props = s390_virtio_serial_properties;
 583     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
 584 }
 585
 586 static const TypeInfo s390_virtio_serial = {
 587     .name          = TYPE_VIRTIO_SERIAL_S390,
 588     .parent        = TYPE_VIRTIO_S390_DEVICE,
 589     .instance_size = sizeof(VirtIOSerialS390),
 590     .instance_init = s390_virtio_serial_instance_init,
 591     .class_init    = s390_virtio_serial_class_init,
 592 };
 593
 594 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 595 {
 596     DeviceClass *dc = DEVICE_CLASS(klass);
 597     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 598
 599     k->realize = s390_virtio_rng_realize;
 600     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 601 }
 602
 603 static const TypeInfo s390_virtio_rng = {
 604     .name          = TYPE_VIRTIO_RNG_S390,
 605     .parent        = TYPE_VIRTIO_S390_DEVICE,
 606     .instance_size = sizeof(VirtIORNGS390),
 607     .instance_init = s390_virtio_rng_instance_init,
 608     .class_init    = s390_virtio_rng_class_init,
 609 };
 610
 611 static void s390_virtio_busdev_realize(DeviceState *dev, Error **errp)
 612 {
 613     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 614     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 615
 616     virtio_s390_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
 617
 618     _info->realize(_dev, errp);
 619 }
 620
 621 static void s390_virtio_busdev_reset(DeviceState *dev)
 622 {
 623     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 624
 625     virtio_reset(_dev->vdev);
 626 }
 627
 628 static Property virtio_s390_properties[] = {
 629     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 630     DEFINE_PROP_END_OF_LIST(),
 631 };
 632
 633 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 634 {
 635     DeviceClass *dc = DEVICE_CLASS(klass);
 636
 637     dc->props = virtio_s390_properties;
 638     dc->realize = s390_virtio_busdev_realize;
 639     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 640     dc->reset = s390_virtio_busdev_reset;
 641 }
 642
 643 static const TypeInfo virtio_s390_device_info = {
 644     .name = TYPE_VIRTIO_S390_DEVICE,
 645     .parent = TYPE_DEVICE,
 646     .instance_size = sizeof(VirtIOS390Device),
 647     .class_init = virtio_s390_device_class_init,
 648     .class_size = sizeof(VirtIOS390DeviceClass),
 649     .abstract = true,
 650 };
 651
 652 static Property s390_virtio_scsi_properties[] = {
 653     DEFINE_VIRTIO_SCSI_FEATURES(VirtIOS390Device, host_features),
 654     DEFINE_PROP_END_OF_LIST(),
 655 };
 656
 657 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 658 {
 659     DeviceClass *dc = DEVICE_CLASS(klass);
 660     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 661
 662     k->realize = s390_virtio_scsi_realize;
 663     dc->props = s390_virtio_scsi_properties;
 664     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 665 }
 666
 667 static const TypeInfo s390_virtio_scsi = {
 668     .name          = TYPE_VIRTIO_SCSI_S390,
 669     .parent        = TYPE_VIRTIO_S390_DEVICE,
 670     .instance_size = sizeof(VirtIOSCSIS390),
 671     .instance_init = s390_virtio_scsi_instance_init,
 672     .class_init    = s390_virtio_scsi_class_init,
 673 };
 674
 675 #ifdef CONFIG_VHOST_SCSI
 676 static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
 677 {
 678     DeviceClass *dc = DEVICE_CLASS(klass);
 679     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 680
 681     k->realize = s390_vhost_scsi_realize;
 682     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 683 }
 684
 685 static const TypeInfo s390_vhost_scsi = {
 686     .name          = TYPE_VHOST_SCSI_S390,
 687     .parent        = TYPE_VIRTIO_S390_DEVICE,
 688     .instance_size = sizeof(VHostSCSIS390),
 689     .instance_init = s390_vhost_scsi_instance_init,
 690     .class_init    = s390_vhost_scsi_class_init,
 691 };
 692 #endif
 693
 694 /***************** S390 Virtio Bus Bridge Device *******************/
 695 /* Only required to have the virtio bus as child in the system bus */
 696
 697 static int s390_virtio_bridge_init(SysBusDevice *dev)
 698 {
 699     /* nothing */
 700     return 0;
 701 }
 702
 703 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 704 {
 705     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 706     DeviceClass *dc = DEVICE_CLASS(klass);
 707
 708     k->init = s390_virtio_bridge_init;
 709     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 710 }
 711
 712 static const TypeInfo s390_virtio_bridge_info = {
 713     .name          = "s390-virtio-bridge",
 714     .parent        = TYPE_SYS_BUS_DEVICE,
 715     .instance_size = sizeof(SysBusDevice),
 716     .class_init    = s390_virtio_bridge_class_init,
 717     .interfaces = (InterfaceInfo[]) {
 718         { TYPE_HOTPLUG_HANDLER },
 719         { }
 720     }
 721 };
 722
 723 /* virtio-s390-bus */
 724
 725 static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
 726                                 VirtIOS390Device *dev)
 727 {
 728     DeviceState *qdev = DEVICE(dev);
 729     char virtio_bus_name[] = "virtio-bus";
 730
 731     qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_S390_BUS,
 732                         qdev, virtio_bus_name);
 733 }
 734
 735 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 736 {
 737     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 738     BusClass *bus_class = BUS_CLASS(klass);
 739     bus_class->max_dev = 1;
 740     k->notify = virtio_s390_notify;
 741     k->get_features = virtio_s390_get_features;
 742 }
 743
 744 static const TypeInfo virtio_s390_bus_info = {
 745     .name          = TYPE_VIRTIO_S390_BUS,
 746     .parent        = TYPE_VIRTIO_BUS,
 747     .instance_size = sizeof(VirtioS390BusState),
 748     .class_init    = virtio_s390_bus_class_init,
 749 };
 750
 751 static void s390_virtio_register_types(void)
 752 {
 753     type_register_static(&virtio_s390_bus_info);
 754     type_register_static(&s390_virtio_bus_info);
 755     type_register_static(&virtio_s390_device_info);
 756     type_register_static(&s390_virtio_serial);
 757     type_register_static(&s390_virtio_blk);
 758     type_register_static(&s390_virtio_net);
 759     type_register_static(&s390_virtio_scsi);
 760 #ifdef CONFIG_VHOST_SCSI
 761     type_register_static(&s390_vhost_scsi);
 762 #endif
 763     type_register_static(&s390_virtio_rng);
 764     type_register_static(&s390_virtio_bridge_info);
 765 }
 766
 767 type_init(s390_virtio_register_types)