hw/s390x/virtio-ccw.c

   1 /*
   2  * virtio ccw target implementation
   3  *
   4  * Copyright 2012,2015 IBM Corp.
   5  * Author(s): Cornelia Huck <[email protected]>
   6  *            Pierre Morel <[email protected]>
   7  *
   8  * This work is licensed under the terms of the GNU GPL, version 2 or (at
   9  * your option) any later version. See the COPYING file in the top-level
  10  * directory.
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "qapi/error.h"
  15 #include "hw/hw.h"
  16 #include "sysemu/block-backend.h"
  17 #include "sysemu/blockdev.h"
  18 #include "sysemu/sysemu.h"
  19 #include "sysemu/kvm.h"
  20 #include "net/net.h"
  21 #include "hw/virtio/virtio.h"
  22 #include "hw/virtio/virtio-serial.h"
  23 #include "hw/virtio/virtio-net.h"
  24 #include "hw/sysbus.h"
  25 #include "qemu/bitops.h"
  26 #include "qemu/error-report.h"
  27 #include "hw/virtio/virtio-access.h"
  28 #include "hw/virtio/virtio-bus.h"
  29 #include "hw/s390x/adapter.h"
  30 #include "hw/s390x/s390_flic.h"
  31
  32 #include "hw/s390x/ioinst.h"
  33 #include "hw/s390x/css.h"
  34 #include "virtio-ccw.h"
  35 #include "trace.h"
  36 #include "hw/s390x/css-bridge.h"
  37
  38 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
  39                                VirtioCcwDevice *dev);
  40
  41 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch)
  42 {
  43     VirtIODevice *vdev = NULL;
  44     VirtioCcwDevice *dev = sch->driver_data;
  45
  46     if (dev) {
  47         vdev = virtio_bus_get_device(&dev->bus);
  48     }
  49     return vdev;
  50 }
  51
  52 static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev)
  53 {
  54     virtio_bus_start_ioeventfd(&dev->bus);
  55 }
  56
  57 static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev)
  58 {
  59     virtio_bus_stop_ioeventfd(&dev->bus);
  60 }
  61
  62 static bool virtio_ccw_ioeventfd_enabled(DeviceState *d)
  63 {
  64     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
  65
  66     return (dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) != 0;
  67 }
  68
  69 static int virtio_ccw_ioeventfd_assign(DeviceState *d, EventNotifier *notifier,
  70                                        int n, bool assign)
  71 {
  72     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
  73     CcwDevice *ccw_dev = CCW_DEVICE(dev);
  74     SubchDev *sch = ccw_dev->sch;
  75     uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid;
  76
  77     return s390_assign_subch_ioeventfd(notifier, sch_id, n, assign);
  78 }
  79
  80 /* Communication blocks used by several channel commands. */
  81 typedef struct VqInfoBlockLegacy {
  82     uint64_t queue;
  83     uint32_t align;
  84     uint16_t index;
  85     uint16_t num;
  86 } QEMU_PACKED VqInfoBlockLegacy;
  87
  88 typedef struct VqInfoBlock {
  89     uint64_t desc;
  90     uint32_t res0;
  91     uint16_t index;
  92     uint16_t num;
  93     uint64_t avail;
  94     uint64_t used;
  95 } QEMU_PACKED VqInfoBlock;
  96
  97 typedef struct VqConfigBlock {
  98     uint16_t index;
  99     uint16_t num_max;
 100 } QEMU_PACKED VqConfigBlock;
 101
 102 typedef struct VirtioFeatDesc {
 103     uint32_t features;
 104     uint8_t index;
 105 } QEMU_PACKED VirtioFeatDesc;
 106
 107 typedef struct VirtioThinintInfo {
 108     hwaddr summary_indicator;
 109     hwaddr device_indicator;
 110     uint64_t ind_bit;
 111     uint8_t isc;
 112 } QEMU_PACKED VirtioThinintInfo;
 113
 114 typedef struct VirtioRevInfo {
 115     uint16_t revision;
 116     uint16_t length;
 117     uint8_t data[0];
 118 } QEMU_PACKED VirtioRevInfo;
 119
 120 /* Specify where the virtqueues for the subchannel are in guest memory. */
 121 static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info,
 122                               VqInfoBlockLegacy *linfo)
 123 {
 124     VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
 125     uint16_t index = info ? info->index : linfo->index;
 126     uint16_t num = info ? info->num : linfo->num;
 127     uint64_t desc = info ? info->desc : linfo->queue;
 128
 129     if (index >= VIRTIO_CCW_QUEUE_MAX) {
 130         return -EINVAL;
 131     }
 132
 133     /* Current code in virtio.c relies on 4K alignment. */
 134     if (linfo && desc && (linfo->align != 4096)) {
 135         return -EINVAL;
 136     }
 137
 138     if (!vdev) {
 139         return -EINVAL;
 140     }
 141
 142     if (info) {
 143         virtio_queue_set_rings(vdev, index, desc, info->avail, info->used);
 144     } else {
 145         virtio_queue_set_addr(vdev, index, desc);
 146     }
 147     if (!desc) {
 148         virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR);
 149     } else {
 150         if (info) {
 151             /* virtio-1 allows changing the ring size. */
 152             if (virtio_queue_get_num(vdev, index) < num) {
 153                 /* Fail if we exceed the maximum number. */
 154                 return -EINVAL;
 155             }
 156             virtio_queue_set_num(vdev, index, num);
 157         } else if (virtio_queue_get_num(vdev, index) > num) {
 158             /* Fail if we don't have a big enough queue. */
 159             return -EINVAL;
 160         }
 161         /* We ignore possible increased num for legacy for compatibility. */
 162         virtio_queue_set_vector(vdev, index, index);
 163     }
 164     /* tell notify handler in case of config change */
 165     vdev->config_vector = VIRTIO_CCW_QUEUE_MAX;
 166     return 0;
 167 }
 168
 169 static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev)
 170 {
 171     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 172
 173     virtio_ccw_stop_ioeventfd(dev);
 174     virtio_reset(vdev);
 175     if (dev->indicators) {
 176         release_indicator(&dev->routes.adapter, dev->indicators);
 177         dev->indicators = NULL;
 178     }
 179     if (dev->indicators2) {
 180         release_indicator(&dev->routes.adapter, dev->indicators2);
 181         dev->indicators2 = NULL;
 182     }
 183     if (dev->summary_indicator) {
 184         release_indicator(&dev->routes.adapter, dev->summary_indicator);
 185         dev->summary_indicator = NULL;
 186     }
 187     ccw_dev->sch->thinint_active = false;
 188 }
 189
 190 static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len,
 191                                     bool is_legacy)
 192 {
 193     int ret;
 194     VqInfoBlock info;
 195     VqInfoBlockLegacy linfo;
 196     size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info);
 197
 198     if (check_len) {
 199         if (ccw.count != info_len) {
 200             return -EINVAL;
 201         }
 202     } else if (ccw.count < info_len) {
 203         /* Can't execute command. */
 204         return -EINVAL;
 205     }
 206     if (!ccw.cda) {
 207         return -EFAULT;
 208     }
 209     if (is_legacy) {
 210         linfo.queue = address_space_ldq_be(&address_space_memory, ccw.cda,
 211                                            MEMTXATTRS_UNSPECIFIED, NULL);
 212         linfo.align = address_space_ldl_be(&address_space_memory,
 213                                            ccw.cda + sizeof(linfo.queue),
 214                                            MEMTXATTRS_UNSPECIFIED,
 215                                            NULL);
 216         linfo.index = address_space_lduw_be(&address_space_memory,
 217                                             ccw.cda + sizeof(linfo.queue)
 218                                             + sizeof(linfo.align),
 219                                             MEMTXATTRS_UNSPECIFIED,
 220                                             NULL);
 221         linfo.num = address_space_lduw_be(&address_space_memory,
 222                                           ccw.cda + sizeof(linfo.queue)
 223                                           + sizeof(linfo.align)
 224                                           + sizeof(linfo.index),
 225                                           MEMTXATTRS_UNSPECIFIED,
 226                                           NULL);
 227         ret = virtio_ccw_set_vqs(sch, NULL, &linfo);
 228     } else {
 229         info.desc = address_space_ldq_be(&address_space_memory, ccw.cda,
 230                                            MEMTXATTRS_UNSPECIFIED, NULL);
 231         info.index = address_space_lduw_be(&address_space_memory,
 232                                            ccw.cda + sizeof(info.desc)
 233                                            + sizeof(info.res0),
 234                                            MEMTXATTRS_UNSPECIFIED, NULL);
 235         info.num = address_space_lduw_be(&address_space_memory,
 236                                          ccw.cda + sizeof(info.desc)
 237                                          + sizeof(info.res0)
 238                                          + sizeof(info.index),
 239                                          MEMTXATTRS_UNSPECIFIED, NULL);
 240         info.avail = address_space_ldq_be(&address_space_memory,
 241                                           ccw.cda + sizeof(info.desc)
 242                                           + sizeof(info.res0)
 243                                           + sizeof(info.index)
 244                                           + sizeof(info.num),
 245                                           MEMTXATTRS_UNSPECIFIED, NULL);
 246         info.used = address_space_ldq_be(&address_space_memory,
 247                                          ccw.cda + sizeof(info.desc)
 248                                          + sizeof(info.res0)
 249                                          + sizeof(info.index)
 250                                          + sizeof(info.num)
 251                                          + sizeof(info.avail),
 252                                          MEMTXATTRS_UNSPECIFIED, NULL);
 253         ret = virtio_ccw_set_vqs(sch, &info, NULL);
 254     }
 255     sch->curr_status.scsw.count = 0;
 256     return ret;
 257 }
 258
 259 static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
 260 {
 261     int ret;
 262     VirtioRevInfo revinfo;
 263     uint8_t status;
 264     VirtioFeatDesc features;
 265     void *config;
 266     hwaddr indicators;
 267     VqConfigBlock vq_config;
 268     VirtioCcwDevice *dev = sch->driver_data;
 269     VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
 270     bool check_len;
 271     int len;
 272     hwaddr hw_len;
 273     VirtioThinintInfo *thinint;
 274
 275     if (!dev) {
 276         return -EINVAL;
 277     }
 278
 279     trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid,
 280                                    ccw.cmd_code);
 281     check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
 282
 283     /* Look at the command. */
 284     switch (ccw.cmd_code) {
 285     case CCW_CMD_SET_VQ:
 286         ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1);
 287         break;
 288     case CCW_CMD_VDEV_RESET:
 289         virtio_ccw_reset_virtio(dev, vdev);
 290         ret = 0;
 291         break;
 292     case CCW_CMD_READ_FEAT:
 293         if (check_len) {
 294             if (ccw.count != sizeof(features)) {
 295                 ret = -EINVAL;
 296                 break;
 297             }
 298         } else if (ccw.count < sizeof(features)) {
 299             /* Can't execute command. */
 300             ret = -EINVAL;
 301             break;
 302         }
 303         if (!ccw.cda) {
 304             ret = -EFAULT;
 305         } else {
 306             features.index = address_space_ldub(&address_space_memory,
 307                                                 ccw.cda
 308                                                 + sizeof(features.features),
 309                                                 MEMTXATTRS_UNSPECIFIED,
 310                                                 NULL);
 311             if (features.index == 0) {
 312                 if (dev->revision >= 1) {
 313                     /* Don't offer legacy features for modern devices. */
 314                     features.features = (uint32_t)
 315                         (vdev->host_features & ~VIRTIO_LEGACY_FEATURES);
 316                 } else {
 317                     features.features = (uint32_t)vdev->host_features;
 318                 }
 319             } else if ((features.index == 1) && (dev->revision >= 1)) {
 320                 /*
 321                  * Only offer feature bits beyond 31 if the guest has
 322                  * negotiated at least revision 1.
 323                  */
 324                 features.features = (uint32_t)(vdev->host_features >> 32);
 325             } else {
 326                 /* Return zeroes if the guest supports more feature bits. */
 327                 features.features = 0;
 328             }
 329             address_space_stl_le(&address_space_memory, ccw.cda,
 330                                  features.features, MEMTXATTRS_UNSPECIFIED,
 331                                  NULL);
 332             sch->curr_status.scsw.count = ccw.count - sizeof(features);
 333             ret = 0;
 334         }
 335         break;
 336     case CCW_CMD_WRITE_FEAT:
 337         if (check_len) {
 338             if (ccw.count != sizeof(features)) {
 339                 ret = -EINVAL;
 340                 break;
 341             }
 342         } else if (ccw.count < sizeof(features)) {
 343             /* Can't execute command. */
 344             ret = -EINVAL;
 345             break;
 346         }
 347         if (!ccw.cda) {
 348             ret = -EFAULT;
 349         } else {
 350             features.index = address_space_ldub(&address_space_memory,
 351                                                 ccw.cda
 352                                                 + sizeof(features.features),
 353                                                 MEMTXATTRS_UNSPECIFIED,
 354                                                 NULL);
 355             features.features = address_space_ldl_le(&address_space_memory,
 356                                                      ccw.cda,
 357                                                      MEMTXATTRS_UNSPECIFIED,
 358                                                      NULL);
 359             if (features.index == 0) {
 360                 virtio_set_features(vdev,
 361                                     (vdev->guest_features & 0xffffffff00000000ULL) |
 362                                     features.features);
 363             } else if ((features.index == 1) && (dev->revision >= 1)) {
 364                 /*
 365                  * If the guest did not negotiate at least revision 1,
 366                  * we did not offer it any feature bits beyond 31. Such a
 367                  * guest passing us any bit here is therefore buggy.
 368                  */
 369                 virtio_set_features(vdev,
 370                                     (vdev->guest_features & 0x00000000ffffffffULL) |
 371                                     ((uint64_t)features.features << 32));
 372             } else {
 373                 /*
 374                  * If the guest supports more feature bits, assert that it
 375                  * passes us zeroes for those we don't support.
 376                  */
 377                 if (features.features) {
 378                     fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n",
 379                             features.index, features.features);
 380                     /* XXX: do a unit check here? */
 381                 }
 382             }
 383             sch->curr_status.scsw.count = ccw.count - sizeof(features);
 384             ret = 0;
 385         }
 386         break;
 387     case CCW_CMD_READ_CONF:
 388         if (check_len) {
 389             if (ccw.count > vdev->config_len) {
 390                 ret = -EINVAL;
 391                 break;
 392             }
 393         }
 394         len = MIN(ccw.count, vdev->config_len);
 395         if (!ccw.cda) {
 396             ret = -EFAULT;
 397         } else {
 398             virtio_bus_get_vdev_config(&dev->bus, vdev->config);
 399             /* XXX config space endianness */
 400             cpu_physical_memory_write(ccw.cda, vdev->config, len);
 401             sch->curr_status.scsw.count = ccw.count - len;
 402             ret = 0;
 403         }
 404         break;
 405     case CCW_CMD_WRITE_CONF:
 406         if (check_len) {
 407             if (ccw.count > vdev->config_len) {
 408                 ret = -EINVAL;
 409                 break;
 410             }
 411         }
 412         len = MIN(ccw.count, vdev->config_len);
 413         hw_len = len;
 414         if (!ccw.cda) {
 415             ret = -EFAULT;
 416         } else {
 417             config = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
 418             if (!config) {
 419                 ret = -EFAULT;
 420             } else {
 421                 len = hw_len;
 422                 /* XXX config space endianness */
 423                 memcpy(vdev->config, config, len);
 424                 cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
 425                 virtio_bus_set_vdev_config(&dev->bus, vdev->config);
 426                 sch->curr_status.scsw.count = ccw.count - len;
 427                 ret = 0;
 428             }
 429         }
 430         break;
 431     case CCW_CMD_READ_STATUS:
 432         if (check_len) {
 433             if (ccw.count != sizeof(status)) {
 434                 ret = -EINVAL;
 435                 break;
 436             }
 437         } else if (ccw.count < sizeof(status)) {
 438             /* Can't execute command. */
 439             ret = -EINVAL;
 440             break;
 441         }
 442         if (!ccw.cda) {
 443             ret = -EFAULT;
 444         } else {
 445             address_space_stb(&address_space_memory, ccw.cda, vdev->status,
 446                                         MEMTXATTRS_UNSPECIFIED, NULL);
 447             sch->curr_status.scsw.count = ccw.count - sizeof(vdev->status);;
 448             ret = 0;
 449         }
 450         break;
 451     case CCW_CMD_WRITE_STATUS:
 452         if (check_len) {
 453             if (ccw.count != sizeof(status)) {
 454                 ret = -EINVAL;
 455                 break;
 456             }
 457         } else if (ccw.count < sizeof(status)) {
 458             /* Can't execute command. */
 459             ret = -EINVAL;
 460             break;
 461         }
 462         if (!ccw.cda) {
 463             ret = -EFAULT;
 464         } else {
 465             status = address_space_ldub(&address_space_memory, ccw.cda,
 466                                         MEMTXATTRS_UNSPECIFIED, NULL);
 467             if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
 468                 virtio_ccw_stop_ioeventfd(dev);
 469             }
 470             if (virtio_set_status(vdev, status) == 0) {
 471                 if (vdev->status == 0) {
 472                     virtio_ccw_reset_virtio(dev, vdev);
 473                 }
 474                 if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
 475                     virtio_ccw_start_ioeventfd(dev);
 476                 }
 477                 sch->curr_status.scsw.count = ccw.count - sizeof(status);
 478                 ret = 0;
 479             } else {
 480                 /* Trigger a command reject. */
 481                 ret = -ENOSYS;
 482             }
 483         }
 484         break;
 485     case CCW_CMD_SET_IND:
 486         if (check_len) {
 487             if (ccw.count != sizeof(indicators)) {
 488                 ret = -EINVAL;
 489                 break;
 490             }
 491         } else if (ccw.count < sizeof(indicators)) {
 492             /* Can't execute command. */
 493             ret = -EINVAL;
 494             break;
 495         }
 496         if (sch->thinint_active) {
 497             /* Trigger a command reject. */
 498             ret = -ENOSYS;
 499             break;
 500         }
 501         if (!ccw.cda) {
 502             ret = -EFAULT;
 503         } else {
 504             indicators = address_space_ldq_be(&address_space_memory, ccw.cda,
 505                                               MEMTXATTRS_UNSPECIFIED, NULL);
 506             dev->indicators = get_indicator(indicators, sizeof(uint64_t));
 507             sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
 508             ret = 0;
 509         }
 510         break;
 511     case CCW_CMD_SET_CONF_IND:
 512         if (check_len) {
 513             if (ccw.count != sizeof(indicators)) {
 514                 ret = -EINVAL;
 515                 break;
 516             }
 517         } else if (ccw.count < sizeof(indicators)) {
 518             /* Can't execute command. */
 519             ret = -EINVAL;
 520             break;
 521         }
 522         if (!ccw.cda) {
 523             ret = -EFAULT;
 524         } else {
 525             indicators = address_space_ldq_be(&address_space_memory, ccw.cda,
 526                                               MEMTXATTRS_UNSPECIFIED, NULL);
 527             dev->indicators2 = get_indicator(indicators, sizeof(uint64_t));
 528             sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
 529             ret = 0;
 530         }
 531         break;
 532     case CCW_CMD_READ_VQ_CONF:
 533         if (check_len) {
 534             if (ccw.count != sizeof(vq_config)) {
 535                 ret = -EINVAL;
 536                 break;
 537             }
 538         } else if (ccw.count < sizeof(vq_config)) {
 539             /* Can't execute command. */
 540             ret = -EINVAL;
 541             break;
 542         }
 543         if (!ccw.cda) {
 544             ret = -EFAULT;
 545         } else {
 546             vq_config.index = address_space_lduw_be(&address_space_memory,
 547                                                     ccw.cda,
 548                                                     MEMTXATTRS_UNSPECIFIED,
 549                                                     NULL);
 550             if (vq_config.index >= VIRTIO_CCW_QUEUE_MAX) {
 551                 ret = -EINVAL;
 552                 break;
 553             }
 554             vq_config.num_max = virtio_queue_get_num(vdev,
 555                                                      vq_config.index);
 556             address_space_stw_be(&address_space_memory,
 557                                  ccw.cda + sizeof(vq_config.index),
 558                                  vq_config.num_max,
 559                                  MEMTXATTRS_UNSPECIFIED,
 560                                  NULL);
 561             sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
 562             ret = 0;
 563         }
 564         break;
 565     case CCW_CMD_SET_IND_ADAPTER:
 566         if (check_len) {
 567             if (ccw.count != sizeof(*thinint)) {
 568                 ret = -EINVAL;
 569                 break;
 570             }
 571         } else if (ccw.count < sizeof(*thinint)) {
 572             /* Can't execute command. */
 573             ret = -EINVAL;
 574             break;
 575         }
 576         len = sizeof(*thinint);
 577         hw_len = len;
 578         if (!ccw.cda) {
 579             ret = -EFAULT;
 580         } else if (dev->indicators && !sch->thinint_active) {
 581             /* Trigger a command reject. */
 582             ret = -ENOSYS;
 583         } else {
 584             thinint = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
 585             if (!thinint) {
 586                 ret = -EFAULT;
 587             } else {
 588                 uint64_t ind_bit = ldq_be_p(&thinint->ind_bit);
 589
 590                 len = hw_len;
 591                 dev->summary_indicator =
 592                     get_indicator(ldq_be_p(&thinint->summary_indicator),
 593                                   sizeof(uint8_t));
 594                 dev->indicators =
 595                     get_indicator(ldq_be_p(&thinint->device_indicator),
 596                                   ind_bit / 8 + 1);
 597                 dev->thinint_isc = thinint->isc;
 598                 dev->routes.adapter.ind_offset = ind_bit;
 599                 dev->routes.adapter.summary_offset = 7;
 600                 cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len);
 601                 ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
 602                                               dev->thinint_isc, true, false,
 603                                               &dev->routes.adapter.adapter_id);
 604                 assert(ret == 0);
 605                 sch->thinint_active = ((dev->indicators != NULL) &&
 606                                        (dev->summary_indicator != NULL));
 607                 sch->curr_status.scsw.count = ccw.count - len;
 608                 ret = 0;
 609             }
 610         }
 611         break;
 612     case CCW_CMD_SET_VIRTIO_REV:
 613         len = sizeof(revinfo);
 614         if (ccw.count < len) {
 615             ret = -EINVAL;
 616             break;
 617         }
 618         if (!ccw.cda) {
 619             ret = -EFAULT;
 620             break;
 621         }
 622         revinfo.revision =
 623             address_space_lduw_be(&address_space_memory, ccw.cda,
 624                                   MEMTXATTRS_UNSPECIFIED, NULL);
 625         revinfo.length =
 626             address_space_lduw_be(&address_space_memory,
 627                                   ccw.cda + sizeof(revinfo.revision),
 628                                   MEMTXATTRS_UNSPECIFIED, NULL);
 629         if (ccw.count < len + revinfo.length ||
 630             (check_len && ccw.count > len + revinfo.length)) {
 631             ret = -EINVAL;
 632             break;
 633         }
 634         /*
 635          * Once we start to support revisions with additional data, we'll
 636          * need to fetch it here. Nothing to do for now, though.
 637          */
 638         if (dev->revision >= 0 ||
 639             revinfo.revision > virtio_ccw_rev_max(dev)) {
 640             ret = -ENOSYS;
 641             break;
 642         }
 643         ret = 0;
 644         dev->revision = revinfo.revision;
 645         break;
 646     default:
 647         ret = -ENOSYS;
 648         break;
 649     }
 650     return ret;
 651 }
 652
 653 static void virtio_sch_disable_cb(SubchDev *sch)
 654 {
 655     VirtioCcwDevice *dev = sch->driver_data;
 656
 657     dev->revision = -1;
 658 }
 659
 660 static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
 661 {
 662     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
 663     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 664     SubchDev *sch = css_create_virtual_sch(ccw_dev->bus_id, errp);
 665     Error *err = NULL;
 666
 667     if (!sch) {
 668         return;
 669     }
 670
 671     sch->driver_data = dev;
 672     sch->ccw_cb = virtio_ccw_cb;
 673     sch->disable_cb = virtio_sch_disable_cb;
 674     sch->id.reserved = 0xff;
 675     sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
 676     ccw_dev->sch = sch;
 677     dev->indicators = NULL;
 678     dev->revision = -1;
 679     css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
 680
 681     trace_virtio_ccw_new_device(
 682         sch->cssid, sch->ssid, sch->schid, sch->devno,
 683         ccw_dev->bus_id.valid ? "user-configured" : "auto-configured");
 684
 685     if (!kvm_eventfds_enabled()) {
 686         dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
 687     }
 688
 689     if (k->realize) {
 690         k->realize(dev, &err);
 691     }
 692     if (err) {
 693         error_propagate(errp, err);
 694         css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
 695         ccw_dev->sch = NULL;
 696         g_free(sch);
 697     }
 698 }
 699
 700 static int virtio_ccw_exit(VirtioCcwDevice *dev)
 701 {
 702     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 703     SubchDev *sch = ccw_dev->sch;
 704
 705     if (sch) {
 706         css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
 707         g_free(sch);
 708     }
 709     if (dev->indicators) {
 710         release_indicator(&dev->routes.adapter, dev->indicators);
 711         dev->indicators = NULL;
 712     }
 713     return 0;
 714 }
 715
 716 static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 717 {
 718     DeviceState *qdev = DEVICE(ccw_dev);
 719     VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev);
 720     DeviceState *vdev = DEVICE(&dev->vdev);
 721
 722     virtio_net_set_netclient_name(&dev->vdev, qdev->id,
 723                                   object_get_typename(OBJECT(qdev)));
 724     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 725     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 726 }
 727
 728 static void virtio_ccw_net_instance_init(Object *obj)
 729 {
 730     VirtIONetCcw *dev = VIRTIO_NET_CCW(obj);
 731
 732     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 733                                 TYPE_VIRTIO_NET);
 734     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 735                               "bootindex", &error_abort);
 736 }
 737
 738 static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 739 {
 740     VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev);
 741     DeviceState *vdev = DEVICE(&dev->vdev);
 742
 743     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 744     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 745 }
 746
 747 static void virtio_ccw_blk_instance_init(Object *obj)
 748 {
 749     VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
 750
 751     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 752                                 TYPE_VIRTIO_BLK);
 753     object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread",
 754                               &error_abort);
 755     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 756                               "bootindex", &error_abort);
 757 }
 758
 759 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 760 {
 761     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev);
 762     DeviceState *vdev = DEVICE(&dev->vdev);
 763     DeviceState *proxy = DEVICE(ccw_dev);
 764     char *bus_name;
 765
 766     /*
 767      * For command line compatibility, this sets the virtio-serial-device bus
 768      * name as before.
 769      */
 770     if (proxy->id) {
 771         bus_name = g_strdup_printf("%s.0", proxy->id);
 772         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 773         g_free(bus_name);
 774     }
 775
 776     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 777     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 778 }
 779
 780
 781 static void virtio_ccw_serial_instance_init(Object *obj)
 782 {
 783     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
 784
 785     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 786                                 TYPE_VIRTIO_SERIAL);
 787 }
 788
 789 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 790 {
 791     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev);
 792     DeviceState *vdev = DEVICE(&dev->vdev);
 793
 794     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 795     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 796 }
 797
 798 static void virtio_ccw_balloon_instance_init(Object *obj)
 799 {
 800     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
 801
 802     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 803                                 TYPE_VIRTIO_BALLOON);
 804     object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
 805                               "guest-stats", &error_abort);
 806     object_property_add_alias(obj, "guest-stats-polling-interval",
 807                               OBJECT(&dev->vdev),
 808                               "guest-stats-polling-interval", &error_abort);
 809 }
 810
 811 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 812 {
 813     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
 814     DeviceState *vdev = DEVICE(&dev->vdev);
 815     DeviceState *qdev = DEVICE(ccw_dev);
 816     char *bus_name;
 817
 818     /*
 819      * For command line compatibility, this sets the virtio-scsi-device bus
 820      * name as before.
 821      */
 822     if (qdev->id) {
 823         bus_name = g_strdup_printf("%s.0", qdev->id);
 824         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 825         g_free(bus_name);
 826     }
 827
 828     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 829     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 830 }
 831
 832 static void virtio_ccw_scsi_instance_init(Object *obj)
 833 {
 834     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
 835
 836     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 837                                 TYPE_VIRTIO_SCSI);
 838     object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread",
 839                               &error_abort);
 840 }
 841
 842 #ifdef CONFIG_VHOST_SCSI
 843 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 844 {
 845     VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
 846     DeviceState *vdev = DEVICE(&dev->vdev);
 847
 848     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 849     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 850 }
 851
 852 static void vhost_ccw_scsi_instance_init(Object *obj)
 853 {
 854     VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
 855
 856     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 857                                 TYPE_VHOST_SCSI);
 858 }
 859 #endif
 860
 861 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 862 {
 863     VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
 864     DeviceState *vdev = DEVICE(&dev->vdev);
 865     Error *err = NULL;
 866
 867     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 868     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 869     if (err) {
 870         error_propagate(errp, err);
 871         return;
 872     }
 873
 874     object_property_set_link(OBJECT(dev),
 875                              OBJECT(dev->vdev.conf.rng), "rng",
 876                              NULL);
 877 }
 878
 879 /* DeviceState to VirtioCcwDevice. Note: used on datapath,
 880  * be careful and test performance if you change this.
 881  */
 882 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d)
 883 {
 884     CcwDevice *ccw_dev = to_ccw_dev_fast(d);
 885
 886     return container_of(ccw_dev, VirtioCcwDevice, parent_obj);
 887 }
 888
 889 static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc,
 890                                      uint8_t to_be_set)
 891 {
 892     uint8_t ind_old, ind_new;
 893     hwaddr len = 1;
 894     uint8_t *ind_addr;
 895
 896     ind_addr = cpu_physical_memory_map(ind_loc, &len, 1);
 897     if (!ind_addr) {
 898         error_report("%s(%x.%x.%04x): unable to access indicator",
 899                      __func__, sch->cssid, sch->ssid, sch->schid);
 900         return -1;
 901     }
 902     do {
 903         ind_old = *ind_addr;
 904         ind_new = ind_old | to_be_set;
 905     } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old);
 906     trace_virtio_ccw_set_ind(ind_loc, ind_old, ind_new);
 907     cpu_physical_memory_unmap(ind_addr, len, 1, len);
 908
 909     return ind_old;
 910 }
 911
 912 static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
 913 {
 914     VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d);
 915     CcwDevice *ccw_dev = to_ccw_dev_fast(d);
 916     SubchDev *sch = ccw_dev->sch;
 917     uint64_t indicators;
 918
 919     /* queue indicators + secondary indicators */
 920     if (vector >= VIRTIO_CCW_QUEUE_MAX + 64) {
 921         return;
 922     }
 923
 924     if (vector < VIRTIO_CCW_QUEUE_MAX) {
 925         if (!dev->indicators) {
 926             return;
 927         }
 928         if (sch->thinint_active) {
 929             /*
 930              * In the adapter interrupt case, indicators points to a
 931              * memory area that may be (way) larger than 64 bit and
 932              * ind_bit indicates the start of the indicators in a big
 933              * endian notation.
 934              */
 935             uint64_t ind_bit = dev->routes.adapter.ind_offset;
 936
 937             virtio_set_ind_atomic(sch, dev->indicators->addr +
 938                                   (ind_bit + vector) / 8,
 939                                   0x80 >> ((ind_bit + vector) % 8));
 940             if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr,
 941                                        0x01)) {
 942                 css_adapter_interrupt(dev->thinint_isc);
 943             }
 944         } else {
 945             indicators = address_space_ldq(&address_space_memory,
 946                                            dev->indicators->addr,
 947                                            MEMTXATTRS_UNSPECIFIED,
 948                                            NULL);
 949             indicators |= 1ULL << vector;
 950             address_space_stq(&address_space_memory, dev->indicators->addr,
 951                               indicators, MEMTXATTRS_UNSPECIFIED, NULL);
 952             css_conditional_io_interrupt(sch);
 953         }
 954     } else {
 955         if (!dev->indicators2) {
 956             return;
 957         }
 958         vector = 0;
 959         indicators = address_space_ldq(&address_space_memory,
 960                                        dev->indicators2->addr,
 961                                        MEMTXATTRS_UNSPECIFIED,
 962                                        NULL);
 963         indicators |= 1ULL << vector;
 964         address_space_stq(&address_space_memory, dev->indicators2->addr,
 965                           indicators, MEMTXATTRS_UNSPECIFIED, NULL);
 966         css_conditional_io_interrupt(sch);
 967     }
 968 }
 969
 970 static void virtio_ccw_reset(DeviceState *d)
 971 {
 972     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
 973     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
 974     CcwDevice *ccw_dev = CCW_DEVICE(d);
 975
 976     virtio_ccw_reset_virtio(dev, vdev);
 977     css_reset_sch(ccw_dev->sch);
 978 }
 979
 980 static void virtio_ccw_vmstate_change(DeviceState *d, bool running)
 981 {
 982     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
 983
 984     if (running) {
 985         virtio_ccw_start_ioeventfd(dev);
 986     } else {
 987         virtio_ccw_stop_ioeventfd(dev);
 988     }
 989 }
 990
 991 static bool virtio_ccw_query_guest_notifiers(DeviceState *d)
 992 {
 993     CcwDevice *dev = CCW_DEVICE(d);
 994
 995     return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA);
 996 }
 997
 998 static int virtio_ccw_get_mappings(VirtioCcwDevice *dev)
 999 {
1000     int r;
1001     CcwDevice *ccw_dev = CCW_DEVICE(dev);
1002
1003     if (!ccw_dev->sch->thinint_active) {
1004         return -EINVAL;
1005     }
1006
1007     r = map_indicator(&dev->routes.adapter, dev->summary_indicator);
1008     if (r) {
1009         return r;
1010     }
1011     r = map_indicator(&dev->routes.adapter, dev->indicators);
1012     if (r) {
1013         return r;
1014     }
1015     dev->routes.adapter.summary_addr = dev->summary_indicator->map;
1016     dev->routes.adapter.ind_addr = dev->indicators->map;
1017
1018     return 0;
1019 }
1020
1021 static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs)
1022 {
1023     int i;
1024     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1025     int ret;
1026     S390FLICState *fs = s390_get_flic();
1027     S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
1028
1029     ret = virtio_ccw_get_mappings(dev);
1030     if (ret) {
1031         return ret;
1032     }
1033     for (i = 0; i < nvqs; i++) {
1034         if (!virtio_queue_get_num(vdev, i)) {
1035             break;
1036         }
1037     }
1038     dev->routes.num_routes = i;
1039     return fsc->add_adapter_routes(fs, &dev->routes);
1040 }
1041
1042 static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs)
1043 {
1044     S390FLICState *fs = s390_get_flic();
1045     S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
1046
1047     fsc->release_adapter_routes(fs, &dev->routes);
1048 }
1049
1050 static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n)
1051 {
1052     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1053     VirtQueue *vq = virtio_get_queue(vdev, n);
1054     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1055
1056     return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL,
1057                                               dev->routes.gsi[n]);
1058 }
1059
1060 static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n)
1061 {
1062     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1063     VirtQueue *vq = virtio_get_queue(vdev, n);
1064     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1065     int ret;
1066
1067     ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier,
1068                                                 dev->routes.gsi[n]);
1069     assert(ret == 0);
1070 }
1071
1072 static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n,
1073                                          bool assign, bool with_irqfd)
1074 {
1075     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1076     VirtQueue *vq = virtio_get_queue(vdev, n);
1077     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1078     VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
1079
1080     if (assign) {
1081         int r = event_notifier_init(notifier, 0);
1082
1083         if (r < 0) {
1084             return r;
1085         }
1086         virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
1087         if (with_irqfd) {
1088             r = virtio_ccw_add_irqfd(dev, n);
1089             if (r) {
1090                 virtio_queue_set_guest_notifier_fd_handler(vq, false,
1091                                                            with_irqfd);
1092                 return r;
1093             }
1094         }
1095         /*
1096          * We do not support individual masking for channel devices, so we
1097          * need to manually trigger any guest masking callbacks here.
1098          */
1099         if (k->guest_notifier_mask) {
1100             k->guest_notifier_mask(vdev, n, false);
1101         }
1102         /* get lost events and re-inject */
1103         if (k->guest_notifier_pending &&
1104             k->guest_notifier_pending(vdev, n)) {
1105             event_notifier_set(notifier);
1106         }
1107     } else {
1108         if (k->guest_notifier_mask) {
1109             k->guest_notifier_mask(vdev, n, true);
1110         }
1111         if (with_irqfd) {
1112             virtio_ccw_remove_irqfd(dev, n);
1113         }
1114         virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
1115         event_notifier_cleanup(notifier);
1116     }
1117     return 0;
1118 }
1119
1120 static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs,
1121                                           bool assigned)
1122 {
1123     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1124     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1125     CcwDevice *ccw_dev = CCW_DEVICE(d);
1126     bool with_irqfd = ccw_dev->sch->thinint_active && kvm_irqfds_enabled();
1127     int r, n;
1128
1129     if (with_irqfd && assigned) {
1130         /* irq routes need to be set up before assigning irqfds */
1131         r = virtio_ccw_setup_irqroutes(dev, nvqs);
1132         if (r < 0) {
1133             goto irqroute_error;
1134         }
1135     }
1136     for (n = 0; n < nvqs; n++) {
1137         if (!virtio_queue_get_num(vdev, n)) {
1138             break;
1139         }
1140         r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd);
1141         if (r < 0) {
1142             goto assign_error;
1143         }
1144     }
1145     if (with_irqfd && !assigned) {
1146         /* release irq routes after irqfds have been released */
1147         virtio_ccw_release_irqroutes(dev, nvqs);
1148     }
1149     return 0;
1150
1151 assign_error:
1152     while (--n >= 0) {
1153         virtio_ccw_set_guest_notifier(dev, n, !assigned, false);
1154     }
1155 irqroute_error:
1156     if (with_irqfd && assigned) {
1157         virtio_ccw_release_irqroutes(dev, nvqs);
1158     }
1159     return r;
1160 }
1161
1162 static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f)
1163 {
1164     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1165     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1166
1167     qemu_put_be16(f, virtio_queue_vector(vdev, n));
1168 }
1169
1170 static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f)
1171 {
1172     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1173     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1174     uint16_t vector;
1175
1176     qemu_get_be16s(f, &vector);
1177     virtio_queue_set_vector(vdev, n , vector);
1178
1179     return 0;
1180 }
1181
1182 static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
1183 {
1184     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1185     CcwDevice *ccw_dev = CCW_DEVICE(d);
1186     SubchDev *s = ccw_dev->sch;
1187     VirtIODevice *vdev = virtio_ccw_get_vdev(s);
1188
1189     subch_device_save(s, f);
1190     if (dev->indicators != NULL) {
1191         qemu_put_be32(f, dev->indicators->len);
1192         qemu_put_be64(f, dev->indicators->addr);
1193     } else {
1194         qemu_put_be32(f, 0);
1195         qemu_put_be64(f, 0UL);
1196     }
1197     if (dev->indicators2 != NULL) {
1198         qemu_put_be32(f, dev->indicators2->len);
1199         qemu_put_be64(f, dev->indicators2->addr);
1200     } else {
1201         qemu_put_be32(f, 0);
1202         qemu_put_be64(f, 0UL);
1203     }
1204     if (dev->summary_indicator != NULL) {
1205         qemu_put_be32(f, dev->summary_indicator->len);
1206         qemu_put_be64(f, dev->summary_indicator->addr);
1207     } else {
1208         qemu_put_be32(f, 0);
1209         qemu_put_be64(f, 0UL);
1210     }
1211     qemu_put_be16(f, vdev->config_vector);
1212     qemu_put_be64(f, dev->routes.adapter.ind_offset);
1213     qemu_put_byte(f, dev->thinint_isc);
1214     qemu_put_be32(f, dev->revision);
1215 }
1216
1217 static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
1218 {
1219     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1220     CcwDevice *ccw_dev = CCW_DEVICE(d);
1221     SubchDev *s = ccw_dev->sch;
1222     VirtIODevice *vdev = virtio_ccw_get_vdev(s);
1223     int len;
1224
1225     s->driver_data = dev;
1226     subch_device_load(s, f);
1227     len = qemu_get_be32(f);
1228     if (len != 0) {
1229         dev->indicators = get_indicator(qemu_get_be64(f), len);
1230     } else {
1231         qemu_get_be64(f);
1232         dev->indicators = NULL;
1233     }
1234     len = qemu_get_be32(f);
1235     if (len != 0) {
1236         dev->indicators2 = get_indicator(qemu_get_be64(f), len);
1237     } else {
1238         qemu_get_be64(f);
1239         dev->indicators2 = NULL;
1240     }
1241     len = qemu_get_be32(f);
1242     if (len != 0) {
1243         dev->summary_indicator = get_indicator(qemu_get_be64(f), len);
1244     } else {
1245         qemu_get_be64(f);
1246         dev->summary_indicator = NULL;
1247     }
1248     qemu_get_be16s(f, &vdev->config_vector);
1249     dev->routes.adapter.ind_offset = qemu_get_be64(f);
1250     dev->thinint_isc = qemu_get_byte(f);
1251     dev->revision = qemu_get_be32(f);
1252     if (s->thinint_active) {
1253         return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
1254                                        dev->thinint_isc, true, false,
1255                                        &dev->routes.adapter.adapter_id);
1256     }
1257
1258     return 0;
1259 }
1260
1261 static void virtio_ccw_pre_plugged(DeviceState *d, Error **errp)
1262 {
1263    VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1264    VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1265
1266     if (dev->max_rev >= 1) {
1267         virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
1268     }
1269 }
1270
1271 /* This is called by virtio-bus just after the device is plugged. */
1272 static void virtio_ccw_device_plugged(DeviceState *d, Error **errp)
1273 {
1274     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1275     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1276     CcwDevice *ccw_dev = CCW_DEVICE(d);
1277     SubchDev *sch = ccw_dev->sch;
1278     int n = virtio_get_num_queues(vdev);
1279
1280     if (!virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
1281         dev->max_rev = 0;
1282     }
1283
1284     if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) {
1285         error_setg(errp, "The number of virtqueues %d "
1286                    "exceeds ccw limit %d", n,
1287                    VIRTIO_CCW_QUEUE_MAX);
1288         return;
1289     }
1290
1291     sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus);
1292
1293
1294     css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid,
1295                           d->hotplugged, 1);
1296 }
1297
1298 static void virtio_ccw_device_unplugged(DeviceState *d)
1299 {
1300     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1301
1302     virtio_ccw_stop_ioeventfd(dev);
1303 }
1304 /**************** Virtio-ccw Bus Device Descriptions *******************/
1305
1306 static Property virtio_ccw_net_properties[] = {
1307     DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
1308     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1309                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1310     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1311                        VIRTIO_CCW_MAX_REV),
1312     DEFINE_PROP_END_OF_LIST(),
1313 };
1314
1315 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data)
1316 {
1317     DeviceClass *dc = DEVICE_CLASS(klass);
1318     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1319
1320     k->realize = virtio_ccw_net_realize;
1321     k->exit = virtio_ccw_exit;
1322     dc->reset = virtio_ccw_reset;
1323     dc->props = virtio_ccw_net_properties;
1324     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
1325 }
1326
1327 static const TypeInfo virtio_ccw_net = {
1328     .name          = TYPE_VIRTIO_NET_CCW,
1329     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1330     .instance_size = sizeof(VirtIONetCcw),
1331     .instance_init = virtio_ccw_net_instance_init,
1332     .class_init    = virtio_ccw_net_class_init,
1333 };
1334
1335 static Property virtio_ccw_blk_properties[] = {
1336     DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
1337     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1338                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1339     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1340                        VIRTIO_CCW_MAX_REV),
1341     DEFINE_PROP_END_OF_LIST(),
1342 };
1343
1344 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
1345 {
1346     DeviceClass *dc = DEVICE_CLASS(klass);
1347     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1348
1349     k->realize = virtio_ccw_blk_realize;
1350     k->exit = virtio_ccw_exit;
1351     dc->reset = virtio_ccw_reset;
1352     dc->props = virtio_ccw_blk_properties;
1353     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1354 }
1355
1356 static const TypeInfo virtio_ccw_blk = {
1357     .name          = TYPE_VIRTIO_BLK_CCW,
1358     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1359     .instance_size = sizeof(VirtIOBlkCcw),
1360     .instance_init = virtio_ccw_blk_instance_init,
1361     .class_init    = virtio_ccw_blk_class_init,
1362 };
1363
1364 static Property virtio_ccw_serial_properties[] = {
1365     DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
1366     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1367                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1368     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1369                        VIRTIO_CCW_MAX_REV),
1370     DEFINE_PROP_END_OF_LIST(),
1371 };
1372
1373 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
1374 {
1375     DeviceClass *dc = DEVICE_CLASS(klass);
1376     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1377
1378     k->realize = virtio_ccw_serial_realize;
1379     k->exit = virtio_ccw_exit;
1380     dc->reset = virtio_ccw_reset;
1381     dc->props = virtio_ccw_serial_properties;
1382     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
1383 }
1384
1385 static const TypeInfo virtio_ccw_serial = {
1386     .name          = TYPE_VIRTIO_SERIAL_CCW,
1387     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1388     .instance_size = sizeof(VirtioSerialCcw),
1389     .instance_init = virtio_ccw_serial_instance_init,
1390     .class_init    = virtio_ccw_serial_class_init,
1391 };
1392
1393 static Property virtio_ccw_balloon_properties[] = {
1394     DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
1395     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1396                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1397     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1398                        VIRTIO_CCW_MAX_REV),
1399     DEFINE_PROP_END_OF_LIST(),
1400 };
1401
1402 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
1403 {
1404     DeviceClass *dc = DEVICE_CLASS(klass);
1405     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1406
1407     k->realize = virtio_ccw_balloon_realize;
1408     k->exit = virtio_ccw_exit;
1409     dc->reset = virtio_ccw_reset;
1410     dc->props = virtio_ccw_balloon_properties;
1411     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1412 }
1413
1414 static const TypeInfo virtio_ccw_balloon = {
1415     .name          = TYPE_VIRTIO_BALLOON_CCW,
1416     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1417     .instance_size = sizeof(VirtIOBalloonCcw),
1418     .instance_init = virtio_ccw_balloon_instance_init,
1419     .class_init    = virtio_ccw_balloon_class_init,
1420 };
1421
1422 static Property virtio_ccw_scsi_properties[] = {
1423     DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
1424     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1425                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1426     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1427                        VIRTIO_CCW_MAX_REV),
1428     DEFINE_PROP_END_OF_LIST(),
1429 };
1430
1431 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
1432 {
1433     DeviceClass *dc = DEVICE_CLASS(klass);
1434     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1435
1436     k->realize = virtio_ccw_scsi_realize;
1437     k->exit = virtio_ccw_exit;
1438     dc->reset = virtio_ccw_reset;
1439     dc->props = virtio_ccw_scsi_properties;
1440     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1441 }
1442
1443 static const TypeInfo virtio_ccw_scsi = {
1444     .name          = TYPE_VIRTIO_SCSI_CCW,
1445     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1446     .instance_size = sizeof(VirtIOSCSICcw),
1447     .instance_init = virtio_ccw_scsi_instance_init,
1448     .class_init    = virtio_ccw_scsi_class_init,
1449 };
1450
1451 #ifdef CONFIG_VHOST_SCSI
1452 static Property vhost_ccw_scsi_properties[] = {
1453     DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
1454     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1455                        VIRTIO_CCW_MAX_REV),
1456     DEFINE_PROP_END_OF_LIST(),
1457 };
1458
1459 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data)
1460 {
1461     DeviceClass *dc = DEVICE_CLASS(klass);
1462     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1463
1464     k->realize = vhost_ccw_scsi_realize;
1465     k->exit = virtio_ccw_exit;
1466     dc->reset = virtio_ccw_reset;
1467     dc->props = vhost_ccw_scsi_properties;
1468     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1469 }
1470
1471 static const TypeInfo vhost_ccw_scsi = {
1472     .name          = TYPE_VHOST_SCSI_CCW,
1473     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1474     .instance_size = sizeof(VHostSCSICcw),
1475     .instance_init = vhost_ccw_scsi_instance_init,
1476     .class_init    = vhost_ccw_scsi_class_init,
1477 };
1478 #endif
1479
1480 static void virtio_ccw_rng_instance_init(Object *obj)
1481 {
1482     VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
1483
1484     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1485                                 TYPE_VIRTIO_RNG);
1486     object_property_add_alias(obj, "rng", OBJECT(&dev->vdev),
1487                               "rng", &error_abort);
1488 }
1489
1490 static Property virtio_ccw_rng_properties[] = {
1491     DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
1492     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1493                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1494     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1495                        VIRTIO_CCW_MAX_REV),
1496     DEFINE_PROP_END_OF_LIST(),
1497 };
1498
1499 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
1500 {
1501     DeviceClass *dc = DEVICE_CLASS(klass);
1502     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1503
1504     k->realize = virtio_ccw_rng_realize;
1505     k->exit = virtio_ccw_exit;
1506     dc->reset = virtio_ccw_reset;
1507     dc->props = virtio_ccw_rng_properties;
1508     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1509 }
1510
1511 static const TypeInfo virtio_ccw_rng = {
1512     .name          = TYPE_VIRTIO_RNG_CCW,
1513     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1514     .instance_size = sizeof(VirtIORNGCcw),
1515     .instance_init = virtio_ccw_rng_instance_init,
1516     .class_init    = virtio_ccw_rng_class_init,
1517 };
1518
1519 static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp)
1520 {
1521     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
1522
1523     virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
1524     virtio_ccw_device_realize(_dev, errp);
1525 }
1526
1527 static int virtio_ccw_busdev_exit(DeviceState *dev)
1528 {
1529     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
1530     VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
1531
1532     return _info->exit(_dev);
1533 }
1534
1535 static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev,
1536                                      DeviceState *dev, Error **errp)
1537 {
1538     VirtioCcwDevice *_dev = to_virtio_ccw_dev_fast(dev);
1539
1540     virtio_ccw_stop_ioeventfd(_dev);
1541 }
1542
1543 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data)
1544 {
1545     DeviceClass *dc = DEVICE_CLASS(klass);
1546     CCWDeviceClass *k = CCW_DEVICE_CLASS(dc);
1547
1548     k->unplug = virtio_ccw_busdev_unplug;
1549     dc->realize = virtio_ccw_busdev_realize;
1550     dc->exit = virtio_ccw_busdev_exit;
1551     dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
1552 }
1553
1554 static const TypeInfo virtio_ccw_device_info = {
1555     .name = TYPE_VIRTIO_CCW_DEVICE,
1556     .parent = TYPE_CCW_DEVICE,
1557     .instance_size = sizeof(VirtioCcwDevice),
1558     .class_init = virtio_ccw_device_class_init,
1559     .class_size = sizeof(VirtIOCCWDeviceClass),
1560     .abstract = true,
1561 };
1562
1563 /* virtio-ccw-bus */
1564
1565 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
1566                                VirtioCcwDevice *dev)
1567 {
1568     DeviceState *qdev = DEVICE(dev);
1569     char virtio_bus_name[] = "virtio-bus";
1570
1571     qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS,
1572                         qdev, virtio_bus_name);
1573 }
1574
1575 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
1576 {
1577     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
1578     BusClass *bus_class = BUS_CLASS(klass);
1579
1580     bus_class->max_dev = 1;
1581     k->notify = virtio_ccw_notify;
1582     k->vmstate_change = virtio_ccw_vmstate_change;
1583     k->query_guest_notifiers = virtio_ccw_query_guest_notifiers;
1584     k->set_guest_notifiers = virtio_ccw_set_guest_notifiers;
1585     k->save_queue = virtio_ccw_save_queue;
1586     k->load_queue = virtio_ccw_load_queue;
1587     k->save_config = virtio_ccw_save_config;
1588     k->load_config = virtio_ccw_load_config;
1589     k->pre_plugged = virtio_ccw_pre_plugged;
1590     k->device_plugged = virtio_ccw_device_plugged;
1591     k->device_unplugged = virtio_ccw_device_unplugged;
1592     k->ioeventfd_enabled = virtio_ccw_ioeventfd_enabled;
1593     k->ioeventfd_assign = virtio_ccw_ioeventfd_assign;
1594 }
1595
1596 static const TypeInfo virtio_ccw_bus_info = {
1597     .name = TYPE_VIRTIO_CCW_BUS,
1598     .parent = TYPE_VIRTIO_BUS,
1599     .instance_size = sizeof(VirtioCcwBusState),
1600     .class_init = virtio_ccw_bus_class_init,
1601 };
1602
1603 #ifdef CONFIG_VIRTFS
1604 static Property virtio_ccw_9p_properties[] = {
1605     DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
1606     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1607             VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1608     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1609                        VIRTIO_CCW_MAX_REV),
1610     DEFINE_PROP_END_OF_LIST(),
1611 };
1612
1613 static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp)
1614 {
1615     V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev);
1616     DeviceState *vdev = DEVICE(&dev->vdev);
1617
1618     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
1619     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1620 }
1621
1622 static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data)
1623 {
1624     DeviceClass *dc = DEVICE_CLASS(klass);
1625     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1626
1627     k->exit = virtio_ccw_exit;
1628     k->realize = virtio_ccw_9p_realize;
1629     dc->reset = virtio_ccw_reset;
1630     dc->props = virtio_ccw_9p_properties;
1631     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1632 }
1633
1634 static void virtio_ccw_9p_instance_init(Object *obj)
1635 {
1636     V9fsCCWState *dev = VIRTIO_9P_CCW(obj);
1637
1638     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1639                                 TYPE_VIRTIO_9P);
1640 }
1641
1642 static const TypeInfo virtio_ccw_9p_info = {
1643     .name          = TYPE_VIRTIO_9P_CCW,
1644     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1645     .instance_size = sizeof(V9fsCCWState),
1646     .instance_init = virtio_ccw_9p_instance_init,
1647     .class_init    = virtio_ccw_9p_class_init,
1648 };
1649 #endif
1650
1651 #ifdef CONFIG_VHOST_VSOCK
1652
1653 static Property vhost_vsock_ccw_properties[] = {
1654     DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
1655     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1656                        VIRTIO_CCW_MAX_REV),
1657     DEFINE_PROP_END_OF_LIST(),
1658 };
1659
1660 static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp)
1661 {
1662     VHostVSockCCWState *dev = VHOST_VSOCK_CCW(ccw_dev);
1663     DeviceState *vdev = DEVICE(&dev->vdev);
1664     Error *err = NULL;
1665
1666     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
1667     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
1668     if (err) {
1669         error_propagate(errp, err);
1670     }
1671 }
1672
1673 static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)
1674 {
1675     DeviceClass *dc = DEVICE_CLASS(klass);
1676     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1677
1678     k->realize = vhost_vsock_ccw_realize;
1679     k->exit = virtio_ccw_exit;
1680     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1681     dc->props = vhost_vsock_ccw_properties;
1682     dc->reset = virtio_ccw_reset;
1683 }
1684
1685 static void vhost_vsock_ccw_instance_init(Object *obj)
1686 {
1687     VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj);
1688
1689     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1690                                 TYPE_VHOST_VSOCK);
1691 }
1692
1693 static const TypeInfo vhost_vsock_ccw_info = {
1694     .name          = TYPE_VHOST_VSOCK_CCW,
1695     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1696     .instance_size = sizeof(VHostVSockCCWState),
1697     .instance_init = vhost_vsock_ccw_instance_init,
1698     .class_init    = vhost_vsock_ccw_class_init,
1699 };
1700 #endif
1701
1702 static void virtio_ccw_register(void)
1703 {
1704     type_register_static(&virtio_ccw_bus_info);
1705     type_register_static(&virtio_ccw_device_info);
1706     type_register_static(&virtio_ccw_serial);
1707     type_register_static(&virtio_ccw_blk);
1708     type_register_static(&virtio_ccw_net);
1709     type_register_static(&virtio_ccw_balloon);
1710     type_register_static(&virtio_ccw_scsi);
1711 #ifdef CONFIG_VHOST_SCSI
1712     type_register_static(&vhost_ccw_scsi);
1713 #endif
1714     type_register_static(&virtio_ccw_rng);
1715 #ifdef CONFIG_VIRTFS
1716     type_register_static(&virtio_ccw_9p_info);
1717 #endif
1718 #ifdef CONFIG_VHOST_VSOCK
1719     type_register_static(&vhost_vsock_ccw_info);
1720 #endif
1721 }
1722
1723 type_init(virtio_ccw_register)