hw/s390x/s390-virtio-bus.c

   1 /*
   2  * QEMU S390 virtio target
   3  *
   4  * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "hw/hw.h"
  21 #include "sysemu/block-backend.h"
  22 #include "sysemu/sysemu.h"
  23 #include "hw/boards.h"
  24 #include "monitor/monitor.h"
  25 #include "hw/loader.h"
  26 #include "elf.h"
  27 #include "hw/virtio/virtio.h"
  28 #include "hw/virtio/virtio-rng.h"
  29 #include "hw/virtio/virtio-serial.h"
  30 #include "hw/virtio/virtio-net.h"
  31 #include "hw/virtio/vhost-scsi.h"
  32 #include "hw/sysbus.h"
  33 #include "sysemu/kvm.h"
  34
  35 #include "hw/s390x/s390-virtio-bus.h"
  36 #include "hw/virtio/virtio-bus.h"
  37
  38 /* #define DEBUG_S390 */
  39
  40 #ifdef DEBUG_S390
  41 #define DPRINTF(fmt, ...) \
  42     do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
  43 #else
  44 #define DPRINTF(fmt, ...) \
  45     do { } while (0)
  46 #endif
  47
  48 static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
  49                                 VirtIOS390Device *dev);
  50
  51 static const TypeInfo s390_virtio_bus_info = {
  52     .name = TYPE_S390_VIRTIO_BUS,
  53     .parent = TYPE_BUS,
  54     .instance_size = sizeof(VirtIOS390Bus),
  55 };
  56
  57 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);
  58
  59 /* length of VirtIO device pages */
  60 const hwaddr virtio_size = S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
  61
  62 static void s390_virtio_bus_reset(void *opaque)
  63 {
  64     VirtIOS390Bus *bus = opaque;
  65     bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
  66 }
  67
  68 void s390_virtio_reset_idx(VirtIOS390Device *dev)
  69 {
  70     int i;
  71     hwaddr idx_addr;
  72     uint8_t num_vq;
  73
  74     num_vq = s390_virtio_device_num_vq(dev);
  75     for (i = 0; i < num_vq; i++) {
  76         idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
  77             VIRTIO_VRING_AVAIL_IDX_OFFS;
  78         stw_phys(&address_space_memory, idx_addr, 0);
  79         idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
  80             VIRTIO_VRING_USED_IDX_OFFS;
  81         stw_phys(&address_space_memory, idx_addr, 0);
  82     }
  83 }
  84
  85 VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
  86 {
  87     VirtIOS390Bus *bus;
  88     BusState *_bus;
  89     DeviceState *dev;
  90
  91     /* Create bridge device */
  92     dev = qdev_create(NULL, "s390-virtio-bridge");
  93     qdev_init_nofail(dev);
  94
  95     /* Create bus on bridge device */
  96
  97     _bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
  98     bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);
  99
 100     bus->dev_page = *ram_size;
 101     bus->dev_offs = bus->dev_page;
 102     bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
 103
 104     /* Enable hotplugging */
 105     qbus_set_hotplug_handler(_bus, dev, &error_abort);
 106
 107     /* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
 108     *ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
 109
 110     qemu_register_reset(s390_virtio_bus_reset, bus);
 111     return bus;
 112 }
 113
 114 static void s390_virtio_device_init(VirtIOS390Device *dev,
 115                                     VirtIODevice *vdev)
 116 {
 117     VirtIOS390Bus *bus;
 118     int dev_len;
 119
 120     bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 121     dev->vdev = vdev;
 122     dev->dev_offs = bus->dev_offs;
 123     dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
 124
 125     dev_len = VIRTIO_DEV_OFFS_CONFIG;
 126     dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
 127     dev_len += dev->feat_len * 2;
 128     dev_len += virtio_bus_get_vdev_config_len(&dev->bus);
 129
 130     bus->dev_offs += dev_len;
 131
 132     dev->host_features = virtio_bus_get_vdev_features(&dev->bus,
 133                                                       dev->host_features);
 134     s390_virtio_device_sync(dev);
 135     s390_virtio_reset_idx(dev);
 136     if (dev->qdev.hotplugged) {
 137         s390_virtio_irq(VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
 138     }
 139 }
 140
 141 static void s390_virtio_net_realize(VirtIOS390Device *s390_dev, Error **errp)
 142 {
 143     DeviceState *qdev = DEVICE(s390_dev);
 144     VirtIONetS390 *dev = VIRTIO_NET_S390(s390_dev);
 145     DeviceState *vdev = DEVICE(&dev->vdev);
 146     Error *err = NULL;
 147
 148     virtio_net_set_config_size(&dev->vdev, s390_dev->host_features);
 149     virtio_net_set_netclient_name(&dev->vdev, qdev->id,
 150                                   object_get_typename(OBJECT(qdev)));
 151     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 152     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 153     if (err) {
 154         error_propagate(errp, err);
 155         return;
 156     }
 157
 158     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 159 }
 160
 161 static void s390_virtio_net_instance_init(Object *obj)
 162 {
 163     VirtIONetS390 *dev = VIRTIO_NET_S390(obj);
 164
 165     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 166                                 TYPE_VIRTIO_NET);
 167     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 168                               "bootindex", &error_abort);
 169 }
 170
 171 static void s390_virtio_blk_realize(VirtIOS390Device *s390_dev, Error **errp)
 172 {
 173     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
 174     DeviceState *vdev = DEVICE(&dev->vdev);
 175     Error *err = NULL;
 176
 177     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 178     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 179     if (err) {
 180         error_propagate(errp, err);
 181         return;
 182     }
 183     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
 190     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 191                                 TYPE_VIRTIO_BLK);
 192     object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
 193                               &error_abort);
 194     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 195                               "bootindex", &error_abort);
 196 }
 197
 198 static void s390_virtio_serial_realize(VirtIOS390Device *s390_dev, Error **errp)
 199 {
 200     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(s390_dev);
 201     DeviceState *vdev = DEVICE(&dev->vdev);
 202     DeviceState *qdev = DEVICE(s390_dev);
 203     Error *err = NULL;
 204     VirtIOS390Bus *bus;
 205     char *bus_name;
 206
 207     bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
 208
 209     /*
 210      * For command line compatibility, this sets the virtio-serial-device bus
 211      * name as before.
 212      */
 213     if (qdev->id) {
 214         bus_name = g_strdup_printf("%s.0", qdev->id);
 215         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 216         g_free(bus_name);
 217     }
 218
 219     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 220     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 221     if (err) {
 222         error_propagate(errp, err);
 223         return;
 224     }
 225
 226     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 227     bus->console = s390_dev;
 228 }
 229
 230 static void s390_virtio_serial_instance_init(Object *obj)
 231 {
 232     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
 233
 234     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 235                                 TYPE_VIRTIO_SERIAL);
 236 }
 237
 238 static void s390_virtio_scsi_realize(VirtIOS390Device *s390_dev, Error **errp)
 239 {
 240     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
 241     DeviceState *vdev = DEVICE(&dev->vdev);
 242     DeviceState *qdev = DEVICE(s390_dev);
 243     Error *err = NULL;
 244     char *bus_name;
 245
 246     /*
 247      * For command line compatibility, this sets the virtio-scsi-device bus
 248      * name as before.
 249      */
 250     if (qdev->id) {
 251         bus_name = g_strdup_printf("%s.0", qdev->id);
 252         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 253         g_free(bus_name);
 254     }
 255
 256     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 257     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 258     if (err) {
 259         error_propagate(errp, err);
 260         return;
 261     }
 262
 263     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 264 }
 265
 266 static void s390_virtio_scsi_instance_init(Object *obj)
 267 {
 268     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 269
 270     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 271                                 TYPE_VIRTIO_SCSI);
 272 }
 273
 274 #ifdef CONFIG_VHOST_SCSI
 275 static void s390_vhost_scsi_realize(VirtIOS390Device *s390_dev, Error **errp)
 276 {
 277     VHostSCSIS390 *dev = VHOST_SCSI_S390(s390_dev);
 278     DeviceState *vdev = DEVICE(&dev->vdev);
 279     Error *err = NULL;
 280
 281     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 282     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 283     if (err) {
 284         error_propagate(errp, err);
 285         return;
 286     }
 287
 288     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 289 }
 290
 291 static void s390_vhost_scsi_instance_init(Object *obj)
 292 {
 293     VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
 294
 295     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 296                                 TYPE_VHOST_SCSI);
 297 }
 298 #endif
 299
 300
 301 static void s390_virtio_rng_realize(VirtIOS390Device *s390_dev, Error **errp)
 302 {
 303     VirtIORNGS390 *dev = VIRTIO_RNG_S390(s390_dev);
 304     DeviceState *vdev = DEVICE(&dev->vdev);
 305     Error *err = NULL;
 306
 307     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 308     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 309     if (err) {
 310         error_propagate(errp, err);
 311         return;
 312     }
 313
 314     object_property_set_link(OBJECT(dev),
 315                              OBJECT(dev->vdev.conf.rng), "rng",
 316                              NULL);
 317
 318     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 319 }
 320
 321 static void s390_virtio_rng_instance_init(Object *obj)
 322 {
 323     VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
 324
 325     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 326                                 TYPE_VIRTIO_RNG);
 327     object_property_add_alias(obj, "rng", OBJECT(&dev->vdev),
 328                               "rng", &error_abort);
 329 }
 330
 331 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 332 {
 333     ram_addr_t token_off;
 334
 335     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 336                 (vq * VIRTIO_VQCONFIG_LEN) +
 337                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 338
 339     return ldq_be_phys(&address_space_memory, token_off);
 340 }
 341
 342 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 343 {
 344     VirtIODevice *vdev = dev->vdev;
 345     int num_vq;
 346
 347     for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
 348         if (!virtio_queue_get_num(vdev, num_vq)) {
 349             break;
 350         }
 351     }
 352
 353     return num_vq;
 354 }
 355
 356 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 357 {
 358     ram_addr_t r = bus->next_ring;
 359
 360     bus->next_ring += VIRTIO_RING_LEN;
 361     return r;
 362 }
 363
 364 void s390_virtio_device_sync(VirtIOS390Device *dev)
 365 {
 366     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 367     ram_addr_t cur_offs;
 368     uint8_t num_vq;
 369     int i;
 370
 371     virtio_reset(dev->vdev);
 372
 373     /* Sync dev space */
 374     stb_phys(&address_space_memory,
 375              dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
 376
 377     stb_phys(&address_space_memory,
 378              dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ,
 379              s390_virtio_device_num_vq(dev));
 380     stb_phys(&address_space_memory,
 381              dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
 382
 383     stb_phys(&address_space_memory,
 384              dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
 385
 386     num_vq = s390_virtio_device_num_vq(dev);
 387     stb_phys(&address_space_memory,
 388              dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
 389
 390     /* Sync virtqueues */
 391     for (i = 0; i < num_vq; i++) {
 392         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 393                         (i * VIRTIO_VQCONFIG_LEN);
 394         ram_addr_t vring;
 395
 396         vring = s390_virtio_next_ring(bus);
 397         virtio_queue_set_addr(dev->vdev, i, vring);
 398         virtio_queue_set_vector(dev->vdev, i, i);
 399         stq_be_phys(&address_space_memory,
 400                     vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
 401         stw_be_phys(&address_space_memory,
 402                     vq + VIRTIO_VQCONFIG_OFFS_NUM,
 403                     virtio_queue_get_num(dev->vdev, i));
 404     }
 405
 406     cur_offs = dev->dev_offs;
 407     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 408     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 409
 410     /* Sync feature bitmap */
 411     stl_le_phys(&address_space_memory, cur_offs, dev->host_features);
 412
 413     dev->feat_offs = cur_offs + dev->feat_len;
 414     cur_offs += dev->feat_len * 2;
 415
 416     /* Sync config space */
 417     virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
 418
 419     cpu_physical_memory_write(cur_offs,
 420                               dev->vdev->config, dev->vdev->config_len);
 421     cur_offs += dev->vdev->config_len;
 422 }
 423
 424 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 425 {
 426     VirtIODevice *vdev = dev->vdev;
 427     uint32_t features;
 428
 429     virtio_set_status(vdev, ldub_phys(&address_space_memory,
 430                                       dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
 431
 432     /* Update guest supported feature bitmap */
 433
 434     features = bswap32(ldl_be_phys(&address_space_memory, dev->feat_offs));
 435     virtio_set_features(vdev, features);
 436 }
 437
 438 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
 439 {
 440     return bus->console;
 441 }
 442
 443 /* Find a device by vring address */
 444 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 445                                              ram_addr_t mem,
 446                                              int *vq_num)
 447 {
 448     BusChild *kid;
 449     int i;
 450
 451     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 452         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 453
 454         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 455             if (!virtio_queue_get_addr(dev->vdev, i))
 456                 break;
 457             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 458                 if (vq_num) {
 459                     *vq_num = i;
 460                 }
 461                 return dev;
 462             }
 463         }
 464     }
 465
 466     return NULL;
 467 }
 468
 469 /* Find a device by device descriptor location */
 470 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 471 {
 472     BusChild *kid;
 473
 474     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 475         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 476         if (dev->dev_offs == mem) {
 477             return dev;
 478         }
 479     }
 480
 481     return NULL;
 482 }
 483
 484 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 485  * be careful and test performance if you change this.
 486  */
 487 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 488 {
 489     return container_of(d, VirtIOS390Device, qdev);
 490 }
 491
 492 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 493 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 494 {
 495     return container_of(d, VirtIOS390Device, qdev);
 496 }
 497
 498 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 499 {
 500     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 501     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 502
 503     s390_virtio_irq(0, token);
 504 }
 505
 506 static unsigned virtio_s390_get_features(DeviceState *d)
 507 {
 508     VirtIOS390Device *dev = to_virtio_s390_device(d);
 509     return dev->host_features;
 510 }
 511
 512 /**************** S390 Virtio Bus Device Descriptions *******************/
 513
 514 static Property s390_virtio_net_properties[] = {
 515     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 516     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
 517     DEFINE_PROP_END_OF_LIST(),
 518 };
 519
 520 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 521 {
 522     DeviceClass *dc = DEVICE_CLASS(klass);
 523     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 524
 525     k->realize = s390_virtio_net_realize;
 526     dc->props = s390_virtio_net_properties;
 527 }
 528
 529 static const TypeInfo s390_virtio_net = {
 530     .name          = TYPE_VIRTIO_NET_S390,
 531     .parent        = TYPE_VIRTIO_S390_DEVICE,
 532     .instance_size = sizeof(VirtIONetS390),
 533     .instance_init = s390_virtio_net_instance_init,
 534     .class_init    = s390_virtio_net_class_init,
 535 };
 536
 537 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 538 {
 539     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 540
 541     k->realize = s390_virtio_blk_realize;
 542 }
 543
 544 static const TypeInfo s390_virtio_blk = {
 545     .name          = "virtio-blk-s390",
 546     .parent        = TYPE_VIRTIO_S390_DEVICE,
 547     .instance_size = sizeof(VirtIOBlkS390),
 548     .instance_init = s390_virtio_blk_instance_init,
 549     .class_init    = s390_virtio_blk_class_init,
 550 };
 551
 552 static Property s390_virtio_serial_properties[] = {
 553     DEFINE_PROP_END_OF_LIST(),
 554 };
 555
 556 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 557 {
 558     DeviceClass *dc = DEVICE_CLASS(klass);
 559     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 560
 561     k->realize = s390_virtio_serial_realize;
 562     dc->props = s390_virtio_serial_properties;
 563 }
 564
 565 static const TypeInfo s390_virtio_serial = {
 566     .name          = TYPE_VIRTIO_SERIAL_S390,
 567     .parent        = TYPE_VIRTIO_S390_DEVICE,
 568     .instance_size = sizeof(VirtIOSerialS390),
 569     .instance_init = s390_virtio_serial_instance_init,
 570     .class_init    = s390_virtio_serial_class_init,
 571 };
 572
 573 static Property s390_virtio_rng_properties[] = {
 574     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 575     DEFINE_PROP_END_OF_LIST(),
 576 };
 577
 578 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 579 {
 580     DeviceClass *dc = DEVICE_CLASS(klass);
 581     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 582
 583     k->realize = s390_virtio_rng_realize;
 584     dc->props = s390_virtio_rng_properties;
 585 }
 586
 587 static const TypeInfo s390_virtio_rng = {
 588     .name          = TYPE_VIRTIO_RNG_S390,
 589     .parent        = TYPE_VIRTIO_S390_DEVICE,
 590     .instance_size = sizeof(VirtIORNGS390),
 591     .instance_init = s390_virtio_rng_instance_init,
 592     .class_init    = s390_virtio_rng_class_init,
 593 };
 594
 595 static void s390_virtio_busdev_realize(DeviceState *dev, Error **errp)
 596 {
 597     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 598     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 599
 600     virtio_s390_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
 601
 602     _info->realize(_dev, errp);
 603 }
 604
 605 static void s390_virtio_busdev_reset(DeviceState *dev)
 606 {
 607     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 608
 609     virtio_reset(_dev->vdev);
 610 }
 611
 612 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 613 {
 614     DeviceClass *dc = DEVICE_CLASS(klass);
 615
 616     dc->realize = s390_virtio_busdev_realize;
 617     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 618     dc->reset = s390_virtio_busdev_reset;
 619 }
 620
 621 static const TypeInfo virtio_s390_device_info = {
 622     .name = TYPE_VIRTIO_S390_DEVICE,
 623     .parent = TYPE_DEVICE,
 624     .instance_size = sizeof(VirtIOS390Device),
 625     .class_init = virtio_s390_device_class_init,
 626     .class_size = sizeof(VirtIOS390DeviceClass),
 627     .abstract = true,
 628 };
 629
 630 static Property s390_virtio_scsi_properties[] = {
 631     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 632     DEFINE_VIRTIO_SCSI_FEATURES(VirtIOS390Device, host_features),
 633     DEFINE_PROP_END_OF_LIST(),
 634 };
 635
 636 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 637 {
 638     DeviceClass *dc = DEVICE_CLASS(klass);
 639     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 640
 641     k->realize = s390_virtio_scsi_realize;
 642     dc->props = s390_virtio_scsi_properties;
 643 }
 644
 645 static const TypeInfo s390_virtio_scsi = {
 646     .name          = TYPE_VIRTIO_SCSI_S390,
 647     .parent        = TYPE_VIRTIO_S390_DEVICE,
 648     .instance_size = sizeof(VirtIOSCSIS390),
 649     .instance_init = s390_virtio_scsi_instance_init,
 650     .class_init    = s390_virtio_scsi_class_init,
 651 };
 652
 653 #ifdef CONFIG_VHOST_SCSI
 654 static Property s390_vhost_scsi_properties[] = {
 655     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 656     DEFINE_PROP_END_OF_LIST(),
 657 };
 658
 659 static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
 660 {
 661     DeviceClass *dc = DEVICE_CLASS(klass);
 662     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 663
 664     k->realize = s390_vhost_scsi_realize;
 665     dc->props = s390_vhost_scsi_properties;
 666 }
 667
 668 static const TypeInfo s390_vhost_scsi = {
 669     .name          = TYPE_VHOST_SCSI_S390,
 670     .parent        = TYPE_VIRTIO_S390_DEVICE,
 671     .instance_size = sizeof(VHostSCSIS390),
 672     .instance_init = s390_vhost_scsi_instance_init,
 673     .class_init    = s390_vhost_scsi_class_init,
 674 };
 675 #endif
 676
 677 /***************** S390 Virtio Bus Bridge Device *******************/
 678 /* Only required to have the virtio bus as child in the system bus */
 679
 680 static int s390_virtio_bridge_init(SysBusDevice *dev)
 681 {
 682     /* nothing */
 683     return 0;
 684 }
 685
 686 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 687 {
 688     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 689
 690     k->init = s390_virtio_bridge_init;
 691 }
 692
 693 static const TypeInfo s390_virtio_bridge_info = {
 694     .name          = "s390-virtio-bridge",
 695     .parent        = TYPE_SYS_BUS_DEVICE,
 696     .instance_size = sizeof(SysBusDevice),
 697     .class_init    = s390_virtio_bridge_class_init,
 698     .interfaces = (InterfaceInfo[]) {
 699         { TYPE_HOTPLUG_HANDLER },
 700         { }
 701     }
 702 };
 703
 704 /* virtio-s390-bus */
 705
 706 static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
 707                                 VirtIOS390Device *dev)
 708 {
 709     DeviceState *qdev = DEVICE(dev);
 710     char virtio_bus_name[] = "virtio-bus";
 711
 712     qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_S390_BUS,
 713                         qdev, virtio_bus_name);
 714 }
 715
 716 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 717 {
 718     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 719     BusClass *bus_class = BUS_CLASS(klass);
 720     bus_class->max_dev = 1;
 721     k->notify = virtio_s390_notify;
 722     k->get_features = virtio_s390_get_features;
 723 }
 724
 725 static const TypeInfo virtio_s390_bus_info = {
 726     .name          = TYPE_VIRTIO_S390_BUS,
 727     .parent        = TYPE_VIRTIO_BUS,
 728     .instance_size = sizeof(VirtioS390BusState),
 729     .class_init    = virtio_s390_bus_class_init,
 730 };
 731
 732 static void s390_virtio_register_types(void)
 733 {
 734     type_register_static(&virtio_s390_bus_info);
 735     type_register_static(&s390_virtio_bus_info);
 736     type_register_static(&virtio_s390_device_info);
 737     type_register_static(&s390_virtio_serial);
 738     type_register_static(&s390_virtio_blk);
 739     type_register_static(&s390_virtio_net);
 740     type_register_static(&s390_virtio_scsi);
 741 #ifdef CONFIG_VHOST_SCSI
 742     type_register_static(&s390_vhost_scsi);
 743 #endif
 744     type_register_static(&s390_virtio_rng);
 745     type_register_static(&s390_virtio_bridge_info);
 746 }
 747
 748 type_init(s390_virtio_register_types)