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 "hw/loader.h"
  25 #include "elf.h"
  26 #include "hw/virtio/virtio.h"
  27 #include "hw/virtio/virtio-rng.h"
  28 #include "hw/virtio/virtio-serial.h"
  29 #include "hw/virtio/virtio-net.h"
  30 #include "hw/virtio/vhost-scsi.h"
  31 #include "hw/sysbus.h"
  32 #include "sysemu/kvm.h"
  33
  34 #include "hw/s390x/s390-virtio-bus.h"
  35 #include "hw/virtio/virtio-bus.h"
  36
  37 /* #define DEBUG_S390 */
  38
  39 #ifdef DEBUG_S390
  40 #define DPRINTF(fmt, ...) \
  41     do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
  42 #else
  43 #define DPRINTF(fmt, ...) \
  44     do { } while (0)
  45 #endif
  46
  47 #define VIRTIO_S390_QUEUE_MAX 64
  48
  49 static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
  50                                 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         address_space_stw(&address_space_memory, idx_addr, 0,
  80                           MEMTXATTRS_UNSPECIFIED, NULL);
  81         idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
  82             virtio_queue_get_avail_size(dev->vdev, i);
  83         address_space_stw(&address_space_memory, idx_addr, 0,
  84                           MEMTXATTRS_UNSPECIFIED, NULL);
  85         idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
  86             VIRTIO_VRING_USED_IDX_OFFS;
  87         address_space_stw(&address_space_memory, idx_addr, 0,
  88                           MEMTXATTRS_UNSPECIFIED, NULL);
  89         idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
  90             virtio_queue_get_used_size(dev->vdev, i);
  91         address_space_stw(&address_space_memory, idx_addr, 0,
  92                           MEMTXATTRS_UNSPECIFIED, NULL);
  93     }
  94 }
  95
  96 VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
  97 {
  98     VirtIOS390Bus *bus;
  99     BusState *_bus;
 100     DeviceState *dev;
 101
 102     /* Create bridge device */
 103     dev = qdev_create(NULL, "s390-virtio-bridge");
 104     qdev_init_nofail(dev);
 105
 106     /* Create bus on bridge device */
 107
 108     _bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
 109     bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);
 110
 111     bus->dev_page = *ram_size;
 112     bus->dev_offs = bus->dev_page;
 113     bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
 114
 115     /* Enable hotplugging */
 116     qbus_set_hotplug_handler(_bus, dev, &error_abort);
 117
 118     /* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
 119     *ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
 120
 121     qemu_register_reset(s390_virtio_bus_reset, bus);
 122     return bus;
 123 }
 124
 125 static void s390_virtio_device_init(VirtIOS390Device *dev,
 126                                     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 += virtio_bus_get_vdev_config_len(&dev->bus);
 140
 141     bus->dev_offs += dev_len;
 142
 143     s390_virtio_device_sync(dev);
 144     s390_virtio_reset_idx(dev);
 145     if (dev->qdev.hotplugged) {
 146         s390_virtio_irq(VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
 147     }
 148 }
 149
 150 static void s390_virtio_net_realize(VirtIOS390Device *s390_dev, Error **errp)
 151 {
 152     DeviceState *qdev = DEVICE(s390_dev);
 153     VirtIONetS390 *dev = VIRTIO_NET_S390(s390_dev);
 154     DeviceState *vdev = DEVICE(&dev->vdev);
 155     Error *err = NULL;
 156
 157     virtio_net_set_netclient_name(&dev->vdev, qdev->id,
 158                                   object_get_typename(OBJECT(qdev)));
 159     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 160     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 161     if (err) {
 162         error_propagate(errp, err);
 163         return;
 164     }
 165
 166     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
 173     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 174                                 TYPE_VIRTIO_NET);
 175     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 176                               "bootindex", &error_abort);
 177 }
 178
 179 static void s390_virtio_blk_realize(VirtIOS390Device *s390_dev, Error **errp)
 180 {
 181     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
 182     DeviceState *vdev = DEVICE(&dev->vdev);
 183     Error *err = NULL;
 184
 185     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 186     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 187     if (err) {
 188         error_propagate(errp, err);
 189         return;
 190     }
 191     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 192 }
 193
 194 static void s390_virtio_blk_instance_init(Object *obj)
 195 {
 196     VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
 197
 198     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 199                                 TYPE_VIRTIO_BLK);
 200     object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
 201                               &error_abort);
 202     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 203                               "bootindex", &error_abort);
 204 }
 205
 206 static void s390_virtio_serial_realize(VirtIOS390Device *s390_dev, Error **errp)
 207 {
 208     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(s390_dev);
 209     DeviceState *vdev = DEVICE(&dev->vdev);
 210     DeviceState *qdev = DEVICE(s390_dev);
 211     Error *err = NULL;
 212     VirtIOS390Bus *bus;
 213     char *bus_name;
 214
 215     bus = DO_UPCAST(VirtIOS390Bus, bus, qdev->parent_bus);
 216
 217     /*
 218      * For command line compatibility, this sets the virtio-serial-device bus
 219      * name as before.
 220      */
 221     if (qdev->id) {
 222         bus_name = g_strdup_printf("%s.0", qdev->id);
 223         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 224         g_free(bus_name);
 225     }
 226
 227     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 228     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 229     if (err) {
 230         error_propagate(errp, err);
 231         return;
 232     }
 233
 234     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 235     bus->console = s390_dev;
 236 }
 237
 238 static void s390_virtio_serial_instance_init(Object *obj)
 239 {
 240     VirtIOSerialS390 *dev = VIRTIO_SERIAL_S390(obj);
 241
 242     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 243                                 TYPE_VIRTIO_SERIAL);
 244 }
 245
 246 static void s390_virtio_scsi_realize(VirtIOS390Device *s390_dev, Error **errp)
 247 {
 248     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(s390_dev);
 249     DeviceState *vdev = DEVICE(&dev->vdev);
 250     DeviceState *qdev = DEVICE(s390_dev);
 251     Error *err = NULL;
 252     char *bus_name;
 253
 254     /*
 255      * For command line compatibility, this sets the virtio-scsi-device bus
 256      * name as before.
 257      */
 258     if (qdev->id) {
 259         bus_name = g_strdup_printf("%s.0", qdev->id);
 260         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 261         g_free(bus_name);
 262     }
 263
 264     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 265     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 266     if (err) {
 267         error_propagate(errp, err);
 268         return;
 269     }
 270
 271     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 272 }
 273
 274 static void s390_virtio_scsi_instance_init(Object *obj)
 275 {
 276     VirtIOSCSIS390 *dev = VIRTIO_SCSI_S390(obj);
 277
 278     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 279                                 TYPE_VIRTIO_SCSI);
 280 }
 281
 282 #ifdef CONFIG_VHOST_SCSI
 283 static void s390_vhost_scsi_realize(VirtIOS390Device *s390_dev, Error **errp)
 284 {
 285     VHostSCSIS390 *dev = VHOST_SCSI_S390(s390_dev);
 286     DeviceState *vdev = DEVICE(&dev->vdev);
 287     Error *err = NULL;
 288
 289     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 290     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 291     if (err) {
 292         error_propagate(errp, err);
 293         return;
 294     }
 295
 296     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 297 }
 298
 299 static void s390_vhost_scsi_instance_init(Object *obj)
 300 {
 301     VHostSCSIS390 *dev = VHOST_SCSI_S390(obj);
 302
 303     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 304                                 TYPE_VHOST_SCSI);
 305 }
 306 #endif
 307
 308
 309 static void s390_virtio_rng_realize(VirtIOS390Device *s390_dev, Error **errp)
 310 {
 311     VirtIORNGS390 *dev = VIRTIO_RNG_S390(s390_dev);
 312     DeviceState *vdev = DEVICE(&dev->vdev);
 313     Error *err = NULL;
 314
 315     qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
 316     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 317     if (err) {
 318         error_propagate(errp, err);
 319         return;
 320     }
 321
 322     object_property_set_link(OBJECT(dev),
 323                              OBJECT(dev->vdev.conf.rng), "rng",
 324                              NULL);
 325
 326     s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
 327 }
 328
 329 static void s390_virtio_rng_instance_init(Object *obj)
 330 {
 331     VirtIORNGS390 *dev = VIRTIO_RNG_S390(obj);
 332
 333     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 334                                 TYPE_VIRTIO_RNG);
 335     object_property_add_alias(obj, "rng", OBJECT(&dev->vdev),
 336                               "rng", &error_abort);
 337 }
 338
 339 static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
 340 {
 341     ram_addr_t token_off;
 342
 343     token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 344                 (vq * VIRTIO_VQCONFIG_LEN) +
 345                 VIRTIO_VQCONFIG_OFFS_TOKEN;
 346
 347     return address_space_ldq_be(&address_space_memory, token_off,
 348                                 MEMTXATTRS_UNSPECIFIED, NULL);
 349 }
 350
 351 static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
 352 {
 353     VirtIODevice *vdev = dev->vdev;
 354     int num_vq;
 355
 356     for (num_vq = 0; num_vq < VIRTIO_S390_QUEUE_MAX; num_vq++) {
 357         if (!virtio_queue_get_num(vdev, num_vq)) {
 358             break;
 359         }
 360     }
 361
 362     return num_vq;
 363 }
 364
 365 static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
 366 {
 367     ram_addr_t r = bus->next_ring;
 368
 369     bus->next_ring += VIRTIO_RING_LEN;
 370     return r;
 371 }
 372
 373 void s390_virtio_device_sync(VirtIOS390Device *dev)
 374 {
 375     VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
 376     ram_addr_t cur_offs;
 377     uint8_t num_vq;
 378     int i;
 379
 380     virtio_reset(dev->vdev);
 381
 382     /* Sync dev space */
 383     address_space_stb(&address_space_memory,
 384                       dev->dev_offs + VIRTIO_DEV_OFFS_TYPE,
 385                       dev->vdev->device_id,
 386                       MEMTXATTRS_UNSPECIFIED,
 387                       NULL);
 388
 389     address_space_stb(&address_space_memory,
 390                       dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ,
 391                       s390_virtio_device_num_vq(dev),
 392                       MEMTXATTRS_UNSPECIFIED,
 393                       NULL);
 394     address_space_stb(&address_space_memory,
 395                       dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN,
 396                       dev->feat_len,
 397                       MEMTXATTRS_UNSPECIFIED,
 398                       NULL);
 399
 400     address_space_stb(&address_space_memory,
 401                       dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN,
 402                       dev->vdev->config_len,
 403                       MEMTXATTRS_UNSPECIFIED,
 404                       NULL);
 405
 406     num_vq = s390_virtio_device_num_vq(dev);
 407     address_space_stb(&address_space_memory,
 408                       dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq,
 409                       MEMTXATTRS_UNSPECIFIED, NULL);
 410
 411     /* Sync virtqueues */
 412     for (i = 0; i < num_vq; i++) {
 413         ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
 414                         (i * VIRTIO_VQCONFIG_LEN);
 415         ram_addr_t vring;
 416
 417         vring = s390_virtio_next_ring(bus);
 418         virtio_queue_set_addr(dev->vdev, i, vring);
 419         virtio_queue_set_vector(dev->vdev, i, i);
 420         address_space_stq_be(&address_space_memory,
 421                              vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring,
 422                              MEMTXATTRS_UNSPECIFIED, NULL);
 423         address_space_stw_be(&address_space_memory,
 424                              vq + VIRTIO_VQCONFIG_OFFS_NUM,
 425                              virtio_queue_get_num(dev->vdev, i),
 426                              MEMTXATTRS_UNSPECIFIED,
 427                              NULL);
 428     }
 429
 430     cur_offs = dev->dev_offs;
 431     cur_offs += VIRTIO_DEV_OFFS_CONFIG;
 432     cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
 433
 434     /* Sync feature bitmap */
 435     address_space_stl_le(&address_space_memory, cur_offs,
 436                          dev->vdev->host_features,
 437                          MEMTXATTRS_UNSPECIFIED, NULL);
 438
 439     dev->feat_offs = cur_offs + dev->feat_len;
 440     cur_offs += dev->feat_len * 2;
 441
 442     /* Sync config space */
 443     virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
 444
 445     cpu_physical_memory_write(cur_offs,
 446                               dev->vdev->config, dev->vdev->config_len);
 447     cur_offs += dev->vdev->config_len;
 448 }
 449
 450 void s390_virtio_device_update_status(VirtIOS390Device *dev)
 451 {
 452     VirtIODevice *vdev = dev->vdev;
 453     uint32_t features;
 454
 455     virtio_set_status(vdev,
 456                       address_space_ldub(&address_space_memory,
 457                                          dev->dev_offs + VIRTIO_DEV_OFFS_STATUS,
 458                                          MEMTXATTRS_UNSPECIFIED, NULL));
 459
 460     /* Update guest supported feature bitmap */
 461
 462     features = bswap32(address_space_ldl_be(&address_space_memory,
 463                                             dev->feat_offs,
 464                                             MEMTXATTRS_UNSPECIFIED, NULL));
 465     virtio_set_features(vdev, features);
 466 }
 467
 468 /* Find a device by vring address */
 469 VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
 470                                              ram_addr_t mem,
 471                                              int *vq_num)
 472 {
 473     BusChild *kid;
 474     int i;
 475
 476     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 477         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 478
 479         for (i = 0; i < VIRTIO_S390_QUEUE_MAX; i++) {
 480             if (!virtio_queue_get_addr(dev->vdev, i))
 481                 break;
 482             if (virtio_queue_get_addr(dev->vdev, i) == mem) {
 483                 if (vq_num) {
 484                     *vq_num = i;
 485                 }
 486                 return dev;
 487             }
 488         }
 489     }
 490
 491     return NULL;
 492 }
 493
 494 /* Find a device by device descriptor location */
 495 VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
 496 {
 497     BusChild *kid;
 498
 499     QTAILQ_FOREACH(kid, &bus->bus.children, sibling) {
 500         VirtIOS390Device *dev = (VirtIOS390Device *)kid->child;
 501         if (dev->dev_offs == mem) {
 502             return dev;
 503         }
 504     }
 505
 506     return NULL;
 507 }
 508
 509 /* DeviceState to VirtIOS390Device. Note: used on datapath,
 510  * be careful and test performance if you change this.
 511  */
 512 static inline VirtIOS390Device *to_virtio_s390_device_fast(DeviceState *d)
 513 {
 514     return container_of(d, VirtIOS390Device, qdev);
 515 }
 516
 517 /* DeviceState to VirtIOS390Device. TODO: use QOM. */
 518 static inline VirtIOS390Device *to_virtio_s390_device(DeviceState *d)
 519 {
 520     return container_of(d, VirtIOS390Device, qdev);
 521 }
 522
 523 static void virtio_s390_notify(DeviceState *d, uint16_t vector)
 524 {
 525     VirtIOS390Device *dev = to_virtio_s390_device_fast(d);
 526     uint64_t token = s390_virtio_device_vq_token(dev, vector);
 527
 528     s390_virtio_irq(0, token);
 529 }
 530
 531 static void virtio_s390_device_plugged(DeviceState *d, Error **errp)
 532 {
 533     VirtIOS390Device *dev = to_virtio_s390_device(d);
 534     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
 535     int n = virtio_get_num_queues(vdev);
 536
 537     if (n > VIRTIO_S390_QUEUE_MAX) {
 538         error_setg(errp, "The nubmer of virtqueues %d "
 539                    "exceeds s390 limit %d", n,
 540                    VIRTIO_S390_QUEUE_MAX);
 541     }
 542 }
 543
 544 /**************** S390 Virtio Bus Device Descriptions *******************/
 545
 546 static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
 547 {
 548     DeviceClass *dc = DEVICE_CLASS(klass);
 549     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 550
 551     k->realize = s390_virtio_net_realize;
 552     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
 553 }
 554
 555 static const TypeInfo s390_virtio_net = {
 556     .name          = TYPE_VIRTIO_NET_S390,
 557     .parent        = TYPE_VIRTIO_S390_DEVICE,
 558     .instance_size = sizeof(VirtIONetS390),
 559     .instance_init = s390_virtio_net_instance_init,
 560     .class_init    = s390_virtio_net_class_init,
 561 };
 562
 563 static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
 564 {
 565     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 566     DeviceClass *dc = DEVICE_CLASS(klass);
 567
 568     k->realize = s390_virtio_blk_realize;
 569     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 570 }
 571
 572 static const TypeInfo s390_virtio_blk = {
 573     .name          = "virtio-blk-s390",
 574     .parent        = TYPE_VIRTIO_S390_DEVICE,
 575     .instance_size = sizeof(VirtIOBlkS390),
 576     .instance_init = s390_virtio_blk_instance_init,
 577     .class_init    = s390_virtio_blk_class_init,
 578 };
 579
 580 static Property s390_virtio_serial_properties[] = {
 581     DEFINE_PROP_END_OF_LIST(),
 582 };
 583
 584 static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
 585 {
 586     DeviceClass *dc = DEVICE_CLASS(klass);
 587     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 588
 589     k->realize = s390_virtio_serial_realize;
 590     dc->props = s390_virtio_serial_properties;
 591     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
 592 }
 593
 594 static const TypeInfo s390_virtio_serial = {
 595     .name          = TYPE_VIRTIO_SERIAL_S390,
 596     .parent        = TYPE_VIRTIO_S390_DEVICE,
 597     .instance_size = sizeof(VirtIOSerialS390),
 598     .instance_init = s390_virtio_serial_instance_init,
 599     .class_init    = s390_virtio_serial_class_init,
 600 };
 601
 602 static void s390_virtio_rng_class_init(ObjectClass *klass, void *data)
 603 {
 604     DeviceClass *dc = DEVICE_CLASS(klass);
 605     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 606
 607     k->realize = s390_virtio_rng_realize;
 608     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 609 }
 610
 611 static const TypeInfo s390_virtio_rng = {
 612     .name          = TYPE_VIRTIO_RNG_S390,
 613     .parent        = TYPE_VIRTIO_S390_DEVICE,
 614     .instance_size = sizeof(VirtIORNGS390),
 615     .instance_init = s390_virtio_rng_instance_init,
 616     .class_init    = s390_virtio_rng_class_init,
 617 };
 618
 619 static void s390_virtio_busdev_realize(DeviceState *dev, Error **errp)
 620 {
 621     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 622     VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
 623
 624     virtio_s390_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
 625
 626     _info->realize(_dev, errp);
 627 }
 628
 629 static void s390_virtio_busdev_reset(DeviceState *dev)
 630 {
 631     VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
 632
 633     virtio_reset(_dev->vdev);
 634 }
 635
 636 static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
 637 {
 638     DeviceClass *dc = DEVICE_CLASS(klass);
 639
 640     dc->realize = s390_virtio_busdev_realize;
 641     dc->bus_type = TYPE_S390_VIRTIO_BUS;
 642     dc->reset = s390_virtio_busdev_reset;
 643 }
 644
 645 static const TypeInfo virtio_s390_device_info = {
 646     .name = TYPE_VIRTIO_S390_DEVICE,
 647     .parent = TYPE_DEVICE,
 648     .instance_size = sizeof(VirtIOS390Device),
 649     .class_init = virtio_s390_device_class_init,
 650     .class_size = sizeof(VirtIOS390DeviceClass),
 651     .abstract = true,
 652 };
 653
 654 static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
 655 {
 656     DeviceClass *dc = DEVICE_CLASS(klass);
 657     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 658
 659     k->realize = s390_virtio_scsi_realize;
 660     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 661 }
 662
 663 static const TypeInfo s390_virtio_scsi = {
 664     .name          = TYPE_VIRTIO_SCSI_S390,
 665     .parent        = TYPE_VIRTIO_S390_DEVICE,
 666     .instance_size = sizeof(VirtIOSCSIS390),
 667     .instance_init = s390_virtio_scsi_instance_init,
 668     .class_init    = s390_virtio_scsi_class_init,
 669 };
 670
 671 #ifdef CONFIG_VHOST_SCSI
 672 static void s390_vhost_scsi_class_init(ObjectClass *klass, void *data)
 673 {
 674     DeviceClass *dc = DEVICE_CLASS(klass);
 675     VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
 676
 677     k->realize = s390_vhost_scsi_realize;
 678     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 679 }
 680
 681 static const TypeInfo s390_vhost_scsi = {
 682     .name          = TYPE_VHOST_SCSI_S390,
 683     .parent        = TYPE_VIRTIO_S390_DEVICE,
 684     .instance_size = sizeof(VHostSCSIS390),
 685     .instance_init = s390_vhost_scsi_instance_init,
 686     .class_init    = s390_vhost_scsi_class_init,
 687 };
 688 #endif
 689
 690 /***************** S390 Virtio Bus Bridge Device *******************/
 691 /* Only required to have the virtio bus as child in the system bus */
 692
 693 static int s390_virtio_bridge_init(SysBusDevice *dev)
 694 {
 695     /* nothing */
 696     return 0;
 697 }
 698
 699 static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
 700 {
 701     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 702     DeviceClass *dc = DEVICE_CLASS(klass);
 703
 704     k->init = s390_virtio_bridge_init;
 705     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 706 }
 707
 708 static const TypeInfo s390_virtio_bridge_info = {
 709     .name          = "s390-virtio-bridge",
 710     .parent        = TYPE_SYS_BUS_DEVICE,
 711     .instance_size = sizeof(SysBusDevice),
 712     .class_init    = s390_virtio_bridge_class_init,
 713     .interfaces = (InterfaceInfo[]) {
 714         { TYPE_HOTPLUG_HANDLER },
 715         { }
 716     }
 717 };
 718
 719 /* virtio-s390-bus */
 720
 721 static void virtio_s390_bus_new(VirtioBusState *bus, size_t bus_size,
 722                                 VirtIOS390Device *dev)
 723 {
 724     DeviceState *qdev = DEVICE(dev);
 725     char virtio_bus_name[] = "virtio-bus";
 726
 727     qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_S390_BUS,
 728                         qdev, virtio_bus_name);
 729 }
 730
 731 static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
 732 {
 733     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
 734     BusClass *bus_class = BUS_CLASS(klass);
 735     bus_class->max_dev = 1;
 736     k->notify = virtio_s390_notify;
 737     k->device_plugged = virtio_s390_device_plugged;
 738 }
 739
 740 static const TypeInfo virtio_s390_bus_info = {
 741     .name          = TYPE_VIRTIO_S390_BUS,
 742     .parent        = TYPE_VIRTIO_BUS,
 743     .instance_size = sizeof(VirtioS390BusState),
 744     .class_init    = virtio_s390_bus_class_init,
 745 };
 746
 747 static void s390_virtio_register_types(void)
 748 {
 749     type_register_static(&virtio_s390_bus_info);
 750     type_register_static(&s390_virtio_bus_info);
 751     type_register_static(&virtio_s390_device_info);
 752     type_register_static(&s390_virtio_serial);
 753     type_register_static(&s390_virtio_blk);
 754     type_register_static(&s390_virtio_net);
 755     type_register_static(&s390_virtio_scsi);
 756 #ifdef CONFIG_VHOST_SCSI
 757     type_register_static(&s390_vhost_scsi);
 758 #endif
 759     type_register_static(&s390_virtio_rng);
 760     type_register_static(&s390_virtio_bridge_info);
 761 }
 762
 763 type_init(s390_virtio_register_types)