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 const VirtIOBindings virtio_s390_bindings;
  59
  60 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);
  61
  62 /* length of VirtIO device pages */
  63 const hwaddr virtio_size = S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
  64
  65 static void s390_virtio_bus_reset(void *opaque)
  66 {
  67     VirtIOS390Bus *bus = opaque;
  68     bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
  69 }
  70
  71 void s390_virtio_reset_idx(VirtIOS390Device *dev)
  72 {
  73     int i;
  74     hwaddr idx_addr;
  75     uint8_t num_vq;
  76
  77     num_vq = s390_virtio_device_num_vq(dev);
  78     for (i = 0; i < num_vq; i++) {
  79         idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
  80             VIRTIO_VRING_AVAIL_IDX_OFFS;
  81         stw_phys(idx_addr, 0);
  82         idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
  83             VIRTIO_VRING_USED_IDX_OFFS;
  84         stw_phys(idx_addr, 0);
  85     }
  86 }
  87
  88 VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
  89 {
  90     VirtIOS390Bus *bus;
  91     BusState *_bus;
  92     DeviceState *dev;
  93
  94     /* Create bridge device */
  95     dev = qdev_create(NULL, "s390-virtio-bridge");
  96     qdev_init_nofail(dev);
  97
  98     /* Create bus on bridge device */
  99
 100     _bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
 101     bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);
 102
 103     bus->dev_page = *ram_size;
 104     bus->dev_offs = bus->dev_page;
 105     bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
 106
 107     /* Enable hotplugging */
 108     _bus->allow_hotplug = 1;
 109
 110     /* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
 111     *ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
 112
 113     qemu_register_reset(s390_virtio_bus_reset, bus);
 114     return bus;
 115 }
 116
 117 static void s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token)
 118 {
 119     if (kvm_enabled()) {
 120         kvm_s390_virtio_irq(cpu, config_change, token);
 121     } else {
 122         cpu_inject_ext(cpu, VIRTIO_EXT_CODE, config_change, token);
 123     }
 124 }
 125
 126 static int s390_virtio_device_init(VirtIOS390Device *dev, VirtIODevice *vdev)
 127 {
 128     VirtIOS390Bus *bus;
 129     int dev_len;
 130
 131     bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 132     dev->vdev = vdev;
 133     dev->dev_offs = bus->dev_offs;
 134     dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
 135
 136     dev_len = VIRTIO_DEV_OFFS_CONFIG;
 137     dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
 138     dev_len += dev->feat_len * 2;
 139     dev_len += vdev->config_len;
 140
 141     bus->dev_offs += dev_len;
 142
 143     virtio_bind_device(vdev, &virtio_s390_bindings, DEVICE(dev));
 144     dev->host_features = vdev->get_features(vdev, dev->host_features);
 145     s390_virtio_device_sync(dev);
 146     s390_virtio_reset_idx(dev);
 147     if (dev->qdev.hotplugged) {
 148         S390CPU *cpu = s390_cpu_addr2state(0);
 149         s390_virtio_irq(cpu, VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
 150     }
 151
 152     return 0;
 153 }
 154
 155 static int s390_virtio_net_init(VirtIOS390Device *s390_dev)
 156 {
 157     VirtIONetS390 *dev = VIRTIO_NET_S390(s390_dev);
 158     DeviceState *vdev = DEVICE(&dev->vdev);
 159
 160     virtio_net_set_config_size(&dev->vdev, s390_dev->host_features);
 161     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 162     if (qdev_init(vdev) < 0) {
 163         return -1;
 164     }
 165
 166     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 167 }
 168
 169 static void s390_virtio_net_instance_init(Object *obj)
 170 {
 171     VirtIONetS390 *dev = VIRTIO_NET_S390(obj);
 172     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_NET);
 173     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 174 }
 175
 176 static int s390_virtio_blk_init(VirtIOS390Device *s390_dev)
 177 {
 178     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
 179     DeviceState *vdev = DEVICE(&dev->vdev);
 180     virtio_blk_set_conf(vdev, &(dev->blk));
 181     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 182     if (qdev_init(vdev) < 0) {
 183         return -1;
 184     }
 185     return 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     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
 192     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 193 }
 194
 195 static int s390_virtio_serial_init(VirtIOS390Device *s390_dev)
 196 {
 197     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(s390_dev);
 198     DeviceState *vdev = DEVICE(&dev->vdev);
 199     DeviceState *qdev = DEVICE(s390_dev);
 200     VirtIOS390Bus *bus;
 201     int r;
 202
 203     bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
 204
 205     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 206     if (qdev_init(vdev) < 0) {
 207         return -1;
 208     }
 209
 210     r = s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 211     if (!r) {
 212         bus->console = s390_dev;
 213     }
 214
 215     return r;
 216 }
 217
 218 static void s390_virtio_serial_instance_init(Object *obj)
 219 {
 220     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
 221     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL);
 222     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 223 }
 224
 225 static int s390_virtio_scsi_init(VirtIOS390Device *s390_dev)
 226 {
 227     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
 228     DeviceState *vdev = DEVICE(&dev->vdev);
 229
 230     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 231     if (qdev_init(vdev) < 0) {
 232         return -1;
 233     }
 234
 235     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 236 }
 237
 238 static void s390_virtio_scsi_instance_init(Object *obj)
 239 {
 240     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 241     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI);
 242     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 243 }
 244
 245 #ifdef CONFIG_VHOST_SCSI
 246 static int s390_vhost_scsi_init(VirtIOS390Device *s390_dev)
 247 {
 248     VHostSCSIS390 *dev = VHOST_SCSI_S390(s390_dev);
 249     DeviceState *vdev = DEVICE(&dev->vdev);
 250
 251     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 252     if (qdev_init(vdev) < 0) {
 253         return -1;
 254     }
 255
 256     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 257 }
 258
 259 static void s390_vhost_scsi_instance_init(Object *obj)
 260 {
 261     VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
 262     object_initialize(OBJECT(&dev->vdev), TYPE_VHOST_SCSI);
 263     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 264 }
 265 #endif
 266
 267
 268 static int s390_virtio_rng_init(VirtIOS390Device *s390_dev)
 269 {
 270     VirtIORNGS390 *dev = VIRTIO_RNG_S390(s390_dev);
 271     DeviceState *vdev = DEVICE(&dev->vdev);
 272
 273     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 274     if (qdev_init(vdev) < 0) {
 275         return -1;
 276     }
 277
 278     object_property_set_link(OBJECT(dev),
 279                              OBJECT(dev->vdev.conf.default_backend), "rng",
 280                              NULL);
 281
 282     return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 283 }
 284
 285 static void s390_virtio_rng_instance_init(Object *obj)
 286 {
 287     VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
 288     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_RNG);
 289     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 290     object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
 291                              (Object **)&dev->vdev.conf.rng, NULL);
 292 }
 293
 294 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 295 {
 296     ram_addr_t token_off;
 297
 298     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 299                 (vq * VIRTIO_VQCONFIG_LEN) +
 300                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 301
 302     return ldq_be_phys(token_off);
 303 }
 304
 305 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 306 {
 307     VirtIODevice *vdev = dev->vdev;
 308     int num_vq;
 309
 310     for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
 311         if (!virtio_queue_get_num(vdev, num_vq)) {
 312             break;
 313         }
 314     }
 315
 316     return num_vq;
 317 }
 318
 319 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 320 {
 321     ram_addr_t r = bus->next_ring;
 322
 323     bus->next_ring += VIRTIO_RING_LEN;
 324     return r;
 325 }
 326
 327 void s390_virtio_device_sync(VirtIOS390Device *dev)
 328 {
 329     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 330     ram_addr_t cur_offs;
 331     uint8_t num_vq;
 332     int i;
 333
 334     virtio_reset(dev->vdev);
 335
 336     /* Sync dev space */
 337     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
 338
 339     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, s390_virtio_device_num_vq(dev));
 340     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
 341
 342     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
 343
 344     num_vq = s390_virtio_device_num_vq(dev);
 345     stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
 346
 347     /* Sync virtqueues */
 348     for (i = 0; i < num_vq; i++) {
 349         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 350                         (i * VIRTIO_VQCONFIG_LEN);
 351         ram_addr_t vring;
 352
 353         vring = s390_virtio_next_ring(bus);
 354         virtio_queue_set_addr(dev->vdev, i, vring);
 355         virtio_queue_set_vector(dev->vdev, i, i);
 356         stq_be_phys(vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
 357         stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
 358     }
 359
 360     cur_offs = dev->dev_offs;
 361     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 362     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 363
 364     /* Sync feature bitmap */
 365     stl_le_phys(cur_offs, dev->host_features);
 366
 367     dev->feat_offs = cur_offs + dev->feat_len;
 368     cur_offs += dev->feat_len * 2;
 369
 370     /* Sync config space */
 371     if (dev->vdev->get_config) {
 372         dev->vdev->get_config(dev->vdev, dev->vdev->config);
 373     }
 374
 375     cpu_physical_memory_write(cur_offs,
 376                               dev->vdev->config, dev->vdev->config_len);
 377     cur_offs += dev->vdev->config_len;
 378 }
 379
 380 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 381 {
 382     VirtIODevice *vdev = dev->vdev;
 383     uint32_t features;
 384
 385     virtio_set_status(vdev, ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
 386
 387     /* Update guest supported feature bitmap */
 388
 389     features = bswap32(ldl_be_phys(dev->feat_offs));
 390     virtio_set_features(vdev, features);
 391 }
 392
 393 VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
 394 {
 395     return bus->console;
 396 }
 397
 398 /* Find a device by vring address */
 399 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 400                                              ram_addr_t mem,
 401                                              int *vq_num)
 402 {
 403     BusChild *kid;
 404     int i;
 405
 406     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 407         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 408
 409         for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
 410             if (!virtio_queue_get_addr(dev->vdev, i))
 411                 break;
 412             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 413                 if (vq_num) {
 414                     *vq_num = i;
 415                 }
 416                 return dev;
 417             }
 418         }
 419     }
 420
 421     return NULL;
 422 }
 423
 424 /* Find a device by device descriptor location */
 425 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 426 {
 427     BusChild *kid;
 428
 429     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 430         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 431         if (dev->dev_offs == mem) {
 432             return dev;
 433         }
 434     }
 435
 436     return NULL;
 437 }
 438
 439 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 440  * be careful and test performance if you change this.
 441  */
 442 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 443 {
 444     return container_of(d, VirtIOS390Device, qdev);
 445 }
 446
 447 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 448 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 449 {
 450     return container_of(d, VirtIOS390Device, qdev);
 451 }
 452
 453 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 454 {
 455     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 456     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 457     S390CPU *cpu = s390_cpu_addr2state(0);
 458
 459     s390_virtio_irq(cpu, 0, token);
 460 }
 461
 462 static unsigned virtio_s390_get_features(DeviceState *d)
 463 {
 464     VirtIOS390Device *dev = to_virtio_s390_device(d);
 465     return dev->host_features;
 466 }
 467
 468 /**************** S390 Virtio Bus Device Descriptions *******************/
 469
 470 static const VirtIOBindings virtio_s390_bindings = {
 471     .notify = virtio_s390_notify,
 472     .get_features = virtio_s390_get_features,
 473 };
 474
 475 static Property s390_virtio_net_properties[] = {
 476     DEFINE_NIC_PROPERTIES(VirtIONetS390, vdev.nic_conf),
 477     DEFINE_VIRTIO_NET_FEATURES(VirtIOS390Device, host_features),
 478     DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetS390, vdev.net_conf),
 479     DEFINE_PROP_END_OF_LIST(),
 480 };
 481
 482 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 483 {
 484     DeviceClass *dc = DEVICE_CLASS(klass);
 485     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 486
 487     k->init = s390_virtio_net_init;
 488     dc->props = s390_virtio_net_properties;
 489 }
 490
 491 static const TypeInfo s390_virtio_net = {
 492     .name          = TYPE_VIRTIO_NET_S390,
 493     .parent        = TYPE_VIRTIO_S390_DEVICE,
 494     .instance_size = sizeof(VirtIONetS390),
 495     .instance_init = s390_virtio_net_instance_init,
 496     .class_init    = s390_virtio_net_class_init,
 497 };
 498
 499 static Property s390_virtio_blk_properties[] = {
 500     DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkS390, blk),
 501     DEFINE_PROP_END_OF_LIST(),
 502 };
 503
 504 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 505 {
 506     DeviceClass *dc = DEVICE_CLASS(klass);
 507     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 508
 509     k->init = s390_virtio_blk_init;
 510     dc->props = s390_virtio_blk_properties;
 511 }
 512
 513 static const TypeInfo s390_virtio_blk = {
 514     .name          = "virtio-blk-s390",
 515     .parent        = TYPE_VIRTIO_S390_DEVICE,
 516     .instance_size = sizeof(VirtIOBlkS390),
 517     .instance_init = s390_virtio_blk_instance_init,
 518     .class_init    = s390_virtio_blk_class_init,
 519 };
 520
 521 static Property s390_virtio_serial_properties[] = {
 522     DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtIOSerialS390, vdev.serial),
 523     DEFINE_PROP_END_OF_LIST(),
 524 };
 525
 526 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 527 {
 528     DeviceClass *dc = DEVICE_CLASS(klass);
 529     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 530
 531     k->init = s390_virtio_serial_init;
 532     dc->props = s390_virtio_serial_properties;
 533 }
 534
 535 static const TypeInfo s390_virtio_serial = {
 536     .name          = TYPE_VIRTIO_SERIAL_S390,
 537     .parent        = TYPE_VIRTIO_S390_DEVICE,
 538     .instance_size = sizeof(VirtIOSerialS390),
 539     .instance_init = s390_virtio_serial_instance_init,
 540     .class_init    = s390_virtio_serial_class_init,
 541 };
 542
 543 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 544 {
 545     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 546
 547     k->init = s390_virtio_rng_init;
 548 }
 549
 550 static const TypeInfo s390_virtio_rng = {
 551     .name          = TYPE_VIRTIO_RNG_S390,
 552     .parent        = TYPE_VIRTIO_S390_DEVICE,
 553     .instance_size = sizeof(VirtIORNGS390),
 554     .instance_init = s390_virtio_rng_instance_init,
 555     .class_init    = s390_virtio_rng_class_init,
 556 };
 557
 558 static int s390_virtio_busdev_init(DeviceState *dev)
 559 {
 560     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 561     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 562
 563     virtio_s390_bus_new(&_dev->bus, _dev);
 564
 565     return _info->init(_dev);
 566 }
 567
 568 static void s390_virtio_busdev_reset(DeviceState *dev)
 569 {
 570     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 571
 572     virtio_reset(_dev->vdev);
 573 }
 574
 575 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 576 {
 577     DeviceClass *dc = DEVICE_CLASS(klass);
 578
 579     dc->init = s390_virtio_busdev_init;
 580     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 581     dc->unplug = qdev_simple_unplug_cb;
 582     dc->reset = s390_virtio_busdev_reset;
 583 }
 584
 585 static const TypeInfo virtio_s390_device_info = {
 586     .name = TYPE_VIRTIO_S390_DEVICE,
 587     .parent = TYPE_DEVICE,
 588     .instance_size = sizeof(VirtIOS390Device),
 589     .class_init = virtio_s390_device_class_init,
 590     .class_size = sizeof(VirtIOS390DeviceClass),
 591     .abstract = true,
 592 };
 593
 594 static Property s390_virtio_scsi_properties[] = {
 595     DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIS390, vdev.parent_obj.conf),
 596     DEFINE_VIRTIO_SCSI_FEATURES(VirtIOS390Device, host_features),
 597     DEFINE_PROP_END_OF_LIST(),
 598 };
 599
 600 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 601 {
 602     DeviceClass *dc = DEVICE_CLASS(klass);
 603     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 604
 605     k->init = s390_virtio_scsi_init;
 606     dc->props = s390_virtio_scsi_properties;
 607 }
 608
 609 static const TypeInfo s390_virtio_scsi = {
 610     .name          = TYPE_VIRTIO_SCSI_S390,
 611     .parent        = TYPE_VIRTIO_S390_DEVICE,
 612     .instance_size = sizeof(VirtIOSCSIS390),
 613     .instance_init = s390_virtio_scsi_instance_init,
 614     .class_init    = s390_virtio_scsi_class_init,
 615 };
 616
 617 #ifdef CONFIG_VHOST_SCSI
 618 static Property s390_vhost_scsi_properties[] = {
 619     DEFINE_VIRTIO_COMMON_FEATURES(VirtIOS390Device, host_features),
 620     DEFINE_VHOST_SCSI_PROPERTIES(VHostSCSIS390, vdev.parent_obj.conf),
 621     DEFINE_PROP_END_OF_LIST(),
 622 };
 623
 624 static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
 625 {
 626     DeviceClass *dc = DEVICE_CLASS(klass);
 627     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 628
 629     k->init = s390_vhost_scsi_init;
 630     dc->props = s390_vhost_scsi_properties;
 631 }
 632
 633 static const TypeInfo s390_vhost_scsi = {
 634     .name          = TYPE_VHOST_SCSI_S390,
 635     .parent        = TYPE_VIRTIO_S390_DEVICE,
 636     .instance_size = sizeof(VHostSCSIS390),
 637     .instance_init = s390_vhost_scsi_instance_init,
 638     .class_init    = s390_vhost_scsi_class_init,
 639 };
 640 #endif
 641
 642 /***************** S390 Virtio Bus Bridge Device *******************/
 643 /* Only required to have the virtio bus as child in the system bus */
 644
 645 static int s390_virtio_bridge_init(SysBusDevice *dev)
 646 {
 647     /* nothing */
 648     return 0;
 649 }
 650
 651 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 652 {
 653     DeviceClass *dc = DEVICE_CLASS(klass);
 654     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 655
 656     k->init = s390_virtio_bridge_init;
 657     dc->no_user = 1;
 658 }
 659
 660 static const TypeInfo s390_virtio_bridge_info = {
 661     .name          = "s390-virtio-bridge",
 662     .parent        = TYPE_SYS_BUS_DEVICE,
 663     .instance_size = sizeof(SysBusDevice),
 664     .class_init    = s390_virtio_bridge_class_init,
 665 };
 666
 667 /* virtio-s390-bus */
 668
 669 static void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev)
 670 {
 671     DeviceState *qdev = DEVICE(dev);
 672     BusState *qbus;
 673     qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_S390_BUS, qdev, NULL);
 674     qbus = BUS(bus);
 675     qbus->allow_hotplug = 1;
 676 }
 677
 678 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 679 {
 680     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 681     BusClass *bus_class = BUS_CLASS(klass);
 682     bus_class->max_dev = 1;
 683     k->notify = virtio_s390_notify;
 684     k->get_features = virtio_s390_get_features;
 685 }
 686
 687 static const TypeInfo virtio_s390_bus_info = {
 688     .name          = TYPE_VIRTIO_S390_BUS,
 689     .parent        = TYPE_VIRTIO_BUS,
 690     .instance_size = sizeof(VirtioS390BusState),
 691     .class_init    = virtio_s390_bus_class_init,
 692 };
 693
 694 static void s390_virtio_register_types(void)
 695 {
 696     type_register_static(&virtio_s390_bus_info);
 697     type_register_static(&s390_virtio_bus_info);
 698     type_register_static(&virtio_s390_device_info);
 699     type_register_static(&s390_virtio_serial);
 700     type_register_static(&s390_virtio_blk);
 701     type_register_static(&s390_virtio_net);
 702     type_register_static(&s390_virtio_scsi);
 703     type_register_static(&s390_vhost_scsi);
 704     type_register_static(&s390_virtio_rng);
 705     type_register_static(&s390_virtio_bridge_info);
 706 }
 707
 708 type_init(s390_virtio_register_types)