hw/s390x/virtio-ccw.c

   1 /*
   2  * virtio ccw target implementation
   3  *
   4  * Copyright 2012,2015 IBM Corp.
   5  * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
   6  *            Pierre Morel <pmorel@linux.vnet.ibm.com>
   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 #include "hw/s390x/s390-virtio-ccw.h"
  38
  39 #define NR_CLASSIC_INDICATOR_BITS 64
  40
  41 static int virtio_ccw_dev_post_load(void *opaque, int version_id)
  42 {
  43     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(opaque);
  44     CcwDevice *ccw_dev = CCW_DEVICE(dev);
  45     CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
  46
  47     ccw_dev->sch->driver_data = dev;
  48     if (ccw_dev->sch->thinint_active) {
  49         dev->routes.adapter.adapter_id = css_get_adapter_id(
  50                                          CSS_IO_ADAPTER_VIRTIO,
  51                                          dev->thinint_isc);
  52     }
  53     /* Re-fill subch_id after loading the subchannel states.*/
  54     if (ck->refill_ids) {
  55         ck->refill_ids(ccw_dev);
  56     }
  57     return 0;
  58 }
  59
  60 typedef struct VirtioCcwDeviceTmp {
  61     VirtioCcwDevice *parent;
  62     uint16_t config_vector;
  63 } VirtioCcwDeviceTmp;
  64
  65 static int virtio_ccw_dev_tmp_pre_save(void *opaque)
  66 {
  67     VirtioCcwDeviceTmp *tmp = opaque;
  68     VirtioCcwDevice *dev = tmp->parent;
  69     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
  70
  71     tmp->config_vector = vdev->config_vector;
  72
  73     return 0;
  74 }
  75
  76 static int virtio_ccw_dev_tmp_post_load(void *opaque, int version_id)
  77 {
  78     VirtioCcwDeviceTmp *tmp = opaque;
  79     VirtioCcwDevice *dev = tmp->parent;
  80     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
  81
  82     vdev->config_vector = tmp->config_vector;
  83     return 0;
  84 }
  85
  86 const VMStateDescription vmstate_virtio_ccw_dev_tmp = {
  87     .name = "s390_virtio_ccw_dev_tmp",
  88     .pre_save = virtio_ccw_dev_tmp_pre_save,
  89     .post_load = virtio_ccw_dev_tmp_post_load,
  90     .fields = (VMStateField[]) {
  91         VMSTATE_UINT16(config_vector, VirtioCcwDeviceTmp),
  92         VMSTATE_END_OF_LIST()
  93     }
  94 };
  95
  96 const VMStateDescription vmstate_virtio_ccw_dev = {
  97     .name = "s390_virtio_ccw_dev",
  98     .version_id = 1,
  99     .minimum_version_id = 1,
 100     .post_load = virtio_ccw_dev_post_load,
 101     .fields = (VMStateField[]) {
 102         VMSTATE_CCW_DEVICE(parent_obj, VirtioCcwDevice),
 103         VMSTATE_PTR_TO_IND_ADDR(indicators, VirtioCcwDevice),
 104         VMSTATE_PTR_TO_IND_ADDR(indicators2, VirtioCcwDevice),
 105         VMSTATE_PTR_TO_IND_ADDR(summary_indicator, VirtioCcwDevice),
 106         /*
 107          * Ugly hack because VirtIODevice does not migrate itself.
 108          * This also makes legacy via vmstate_save_state possible.
 109          */
 110         VMSTATE_WITH_TMP(VirtioCcwDevice, VirtioCcwDeviceTmp,
 111                          vmstate_virtio_ccw_dev_tmp),
 112         VMSTATE_STRUCT(routes, VirtioCcwDevice, 1, vmstate_adapter_routes,
 113                        AdapterRoutes),
 114         VMSTATE_UINT8(thinint_isc, VirtioCcwDevice),
 115         VMSTATE_INT32(revision, VirtioCcwDevice),
 116         VMSTATE_END_OF_LIST()
 117     }
 118 };
 119
 120 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
 121                                VirtioCcwDevice *dev);
 122
 123 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch)
 124 {
 125     VirtIODevice *vdev = NULL;
 126     VirtioCcwDevice *dev = sch->driver_data;
 127
 128     if (dev) {
 129         vdev = virtio_bus_get_device(&dev->bus);
 130     }
 131     return vdev;
 132 }
 133
 134 static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev)
 135 {
 136     virtio_bus_start_ioeventfd(&dev->bus);
 137 }
 138
 139 static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev)
 140 {
 141     virtio_bus_stop_ioeventfd(&dev->bus);
 142 }
 143
 144 static bool virtio_ccw_ioeventfd_enabled(DeviceState *d)
 145 {
 146     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
 147
 148     return (dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) != 0;
 149 }
 150
 151 static int virtio_ccw_ioeventfd_assign(DeviceState *d, EventNotifier *notifier,
 152                                        int n, bool assign)
 153 {
 154     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
 155     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 156     SubchDev *sch = ccw_dev->sch;
 157     uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid;
 158
 159     return s390_assign_subch_ioeventfd(notifier, sch_id, n, assign);
 160 }
 161
 162 /* Communication blocks used by several channel commands. */
 163 typedef struct VqInfoBlockLegacy {
 164     uint64_t queue;
 165     uint32_t align;
 166     uint16_t index;
 167     uint16_t num;
 168 } QEMU_PACKED VqInfoBlockLegacy;
 169
 170 typedef struct VqInfoBlock {
 171     uint64_t desc;
 172     uint32_t res0;
 173     uint16_t index;
 174     uint16_t num;
 175     uint64_t avail;
 176     uint64_t used;
 177 } QEMU_PACKED VqInfoBlock;
 178
 179 typedef struct VqConfigBlock {
 180     uint16_t index;
 181     uint16_t num_max;
 182 } QEMU_PACKED VqConfigBlock;
 183
 184 typedef struct VirtioFeatDesc {
 185     uint32_t features;
 186     uint8_t index;
 187 } QEMU_PACKED VirtioFeatDesc;
 188
 189 typedef struct VirtioThinintInfo {
 190     hwaddr summary_indicator;
 191     hwaddr device_indicator;
 192     uint64_t ind_bit;
 193     uint8_t isc;
 194 } QEMU_PACKED VirtioThinintInfo;
 195
 196 typedef struct VirtioRevInfo {
 197     uint16_t revision;
 198     uint16_t length;
 199     uint8_t data[0];
 200 } QEMU_PACKED VirtioRevInfo;
 201
 202 /* Specify where the virtqueues for the subchannel are in guest memory. */
 203 static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info,
 204                               VqInfoBlockLegacy *linfo)
 205 {
 206     VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
 207     uint16_t index = info ? info->index : linfo->index;
 208     uint16_t num = info ? info->num : linfo->num;
 209     uint64_t desc = info ? info->desc : linfo->queue;
 210
 211     if (index >= VIRTIO_QUEUE_MAX) {
 212         return -EINVAL;
 213     }
 214
 215     /* Current code in virtio.c relies on 4K alignment. */
 216     if (linfo && desc && (linfo->align != 4096)) {
 217         return -EINVAL;
 218     }
 219
 220     if (!vdev) {
 221         return -EINVAL;
 222     }
 223
 224     if (info) {
 225         virtio_queue_set_rings(vdev, index, desc, info->avail, info->used);
 226     } else {
 227         virtio_queue_set_addr(vdev, index, desc);
 228     }
 229     if (!desc) {
 230         virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR);
 231     } else {
 232         if (info) {
 233             /* virtio-1 allows changing the ring size. */
 234             if (virtio_queue_get_max_num(vdev, index) < num) {
 235                 /* Fail if we exceed the maximum number. */
 236                 return -EINVAL;
 237             }
 238             virtio_queue_set_num(vdev, index, num);
 239         } else if (virtio_queue_get_num(vdev, index) > num) {
 240             /* Fail if we don't have a big enough queue. */
 241             return -EINVAL;
 242         }
 243         /* We ignore possible increased num for legacy for compatibility. */
 244         virtio_queue_set_vector(vdev, index, index);
 245     }
 246     /* tell notify handler in case of config change */
 247     vdev->config_vector = VIRTIO_QUEUE_MAX;
 248     return 0;
 249 }
 250
 251 static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev)
 252 {
 253     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 254
 255     virtio_ccw_stop_ioeventfd(dev);
 256     virtio_reset(vdev);
 257     if (dev->indicators) {
 258         release_indicator(&dev->routes.adapter, dev->indicators);
 259         dev->indicators = NULL;
 260     }
 261     if (dev->indicators2) {
 262         release_indicator(&dev->routes.adapter, dev->indicators2);
 263         dev->indicators2 = NULL;
 264     }
 265     if (dev->summary_indicator) {
 266         release_indicator(&dev->routes.adapter, dev->summary_indicator);
 267         dev->summary_indicator = NULL;
 268     }
 269     ccw_dev->sch->thinint_active = false;
 270 }
 271
 272 static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len,
 273                                     bool is_legacy)
 274 {
 275     int ret;
 276     VqInfoBlock info;
 277     VqInfoBlockLegacy linfo;
 278     size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info);
 279
 280     if (check_len) {
 281         if (ccw.count != info_len) {
 282             return -EINVAL;
 283         }
 284     } else if (ccw.count < info_len) {
 285         /* Can't execute command. */
 286         return -EINVAL;
 287     }
 288     if (!ccw.cda) {
 289         return -EFAULT;
 290     }
 291     if (is_legacy) {
 292         ccw_dstream_read(&sch->cds, linfo);
 293         be64_to_cpus(&linfo.queue);
 294         be32_to_cpus(&linfo.align);
 295         be16_to_cpus(&linfo.index);
 296         be16_to_cpus(&linfo.num);
 297         ret = virtio_ccw_set_vqs(sch, NULL, &linfo);
 298     } else {
 299         ccw_dstream_read(&sch->cds, info);
 300         be64_to_cpus(&info.desc);
 301         be16_to_cpus(&info.index);
 302         be16_to_cpus(&info.num);
 303         be64_to_cpus(&info.avail);
 304         be64_to_cpus(&info.used);
 305         ret = virtio_ccw_set_vqs(sch, &info, NULL);
 306     }
 307     sch->curr_status.scsw.count = 0;
 308     return ret;
 309 }
 310
 311 static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
 312 {
 313     int ret;
 314     VirtioRevInfo revinfo;
 315     uint8_t status;
 316     VirtioFeatDesc features;
 317     hwaddr indicators;
 318     VqConfigBlock vq_config;
 319     VirtioCcwDevice *dev = sch->driver_data;
 320     VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
 321     bool check_len;
 322     int len;
 323     VirtioThinintInfo thinint;
 324
 325     if (!dev) {
 326         return -EINVAL;
 327     }
 328
 329     trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid,
 330                                    ccw.cmd_code);
 331     check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
 332
 333     if (dev->force_revision_1 && dev->revision < 0 &&
 334         ccw.cmd_code != CCW_CMD_SET_VIRTIO_REV) {
 335         /*
 336          * virtio-1 drivers must start with negotiating to a revision >= 1,
 337          * so post a command reject for all other commands
 338          */
 339         return -ENOSYS;
 340     }
 341
 342     /* Look at the command. */
 343     switch (ccw.cmd_code) {
 344     case CCW_CMD_SET_VQ:
 345         ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1);
 346         break;
 347     case CCW_CMD_VDEV_RESET:
 348         virtio_ccw_reset_virtio(dev, vdev);
 349         ret = 0;
 350         break;
 351     case CCW_CMD_READ_FEAT:
 352         if (check_len) {
 353             if (ccw.count != sizeof(features)) {
 354                 ret = -EINVAL;
 355                 break;
 356             }
 357         } else if (ccw.count < sizeof(features)) {
 358             /* Can't execute command. */
 359             ret = -EINVAL;
 360             break;
 361         }
 362         if (!ccw.cda) {
 363             ret = -EFAULT;
 364         } else {
 365             VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
 366
 367             ccw_dstream_advance(&sch->cds, sizeof(features.features));
 368             ccw_dstream_read(&sch->cds, features.index);
 369             if (features.index == 0) {
 370                 if (dev->revision >= 1) {
 371                     /* Don't offer legacy features for modern devices. */
 372                     features.features = (uint32_t)
 373                         (vdev->host_features & ~vdc->legacy_features);
 374                 } else {
 375                     features.features = (uint32_t)vdev->host_features;
 376                 }
 377             } else if ((features.index == 1) && (dev->revision >= 1)) {
 378                 /*
 379                  * Only offer feature bits beyond 31 if the guest has
 380                  * negotiated at least revision 1.
 381                  */
 382                 features.features = (uint32_t)(vdev->host_features >> 32);
 383             } else {
 384                 /* Return zeroes if the guest supports more feature bits. */
 385                 features.features = 0;
 386             }
 387             ccw_dstream_rewind(&sch->cds);
 388             cpu_to_le32s(&features.features);
 389             ccw_dstream_write(&sch->cds, features.features);
 390             sch->curr_status.scsw.count = ccw.count - sizeof(features);
 391             ret = 0;
 392         }
 393         break;
 394     case CCW_CMD_WRITE_FEAT:
 395         if (check_len) {
 396             if (ccw.count != sizeof(features)) {
 397                 ret = -EINVAL;
 398                 break;
 399             }
 400         } else if (ccw.count < sizeof(features)) {
 401             /* Can't execute command. */
 402             ret = -EINVAL;
 403             break;
 404         }
 405         if (!ccw.cda) {
 406             ret = -EFAULT;
 407         } else {
 408             ccw_dstream_read(&sch->cds, features);
 409             le32_to_cpus(&features.features);
 410             if (features.index == 0) {
 411                 virtio_set_features(vdev,
 412                                     (vdev->guest_features & 0xffffffff00000000ULL) |
 413                                     features.features);
 414             } else if ((features.index == 1) && (dev->revision >= 1)) {
 415                 /*
 416                  * If the guest did not negotiate at least revision 1,
 417                  * we did not offer it any feature bits beyond 31. Such a
 418                  * guest passing us any bit here is therefore buggy.
 419                  */
 420                 virtio_set_features(vdev,
 421                                     (vdev->guest_features & 0x00000000ffffffffULL) |
 422                                     ((uint64_t)features.features << 32));
 423             } else {
 424                 /*
 425                  * If the guest supports more feature bits, assert that it
 426                  * passes us zeroes for those we don't support.
 427                  */
 428                 if (features.features) {
 429                     fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n",
 430                             features.index, features.features);
 431                     /* XXX: do a unit check here? */
 432                 }
 433             }
 434             sch->curr_status.scsw.count = ccw.count - sizeof(features);
 435             ret = 0;
 436         }
 437         break;
 438     case CCW_CMD_READ_CONF:
 439         if (check_len) {
 440             if (ccw.count > vdev->config_len) {
 441                 ret = -EINVAL;
 442                 break;
 443             }
 444         }
 445         len = MIN(ccw.count, vdev->config_len);
 446         if (!ccw.cda) {
 447             ret = -EFAULT;
 448         } else {
 449             virtio_bus_get_vdev_config(&dev->bus, vdev->config);
 450             ccw_dstream_write_buf(&sch->cds, vdev->config, len);
 451             sch->curr_status.scsw.count = ccw.count - len;
 452             ret = 0;
 453         }
 454         break;
 455     case CCW_CMD_WRITE_CONF:
 456         if (check_len) {
 457             if (ccw.count > vdev->config_len) {
 458                 ret = -EINVAL;
 459                 break;
 460             }
 461         }
 462         len = MIN(ccw.count, vdev->config_len);
 463         if (!ccw.cda) {
 464             ret = -EFAULT;
 465         } else {
 466             ret = ccw_dstream_read_buf(&sch->cds, vdev->config, len);
 467             if (!ret) {
 468                 virtio_bus_set_vdev_config(&dev->bus, vdev->config);
 469                 sch->curr_status.scsw.count = ccw.count - len;
 470             }
 471         }
 472         break;
 473     case CCW_CMD_READ_STATUS:
 474         if (check_len) {
 475             if (ccw.count != sizeof(status)) {
 476                 ret = -EINVAL;
 477                 break;
 478             }
 479         } else if (ccw.count < sizeof(status)) {
 480             /* Can't execute command. */
 481             ret = -EINVAL;
 482             break;
 483         }
 484         if (!ccw.cda) {
 485             ret = -EFAULT;
 486         } else {
 487             address_space_stb(&address_space_memory, ccw.cda, vdev->status,
 488                                         MEMTXATTRS_UNSPECIFIED, NULL);
 489             sch->curr_status.scsw.count = ccw.count - sizeof(vdev->status);;
 490             ret = 0;
 491         }
 492         break;
 493     case CCW_CMD_WRITE_STATUS:
 494         if (check_len) {
 495             if (ccw.count != sizeof(status)) {
 496                 ret = -EINVAL;
 497                 break;
 498             }
 499         } else if (ccw.count < sizeof(status)) {
 500             /* Can't execute command. */
 501             ret = -EINVAL;
 502             break;
 503         }
 504         if (!ccw.cda) {
 505             ret = -EFAULT;
 506         } else {
 507             ccw_dstream_read(&sch->cds, status);
 508             if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
 509                 virtio_ccw_stop_ioeventfd(dev);
 510             }
 511             if (virtio_set_status(vdev, status) == 0) {
 512                 if (vdev->status == 0) {
 513                     virtio_ccw_reset_virtio(dev, vdev);
 514                 }
 515                 if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
 516                     virtio_ccw_start_ioeventfd(dev);
 517                 }
 518                 sch->curr_status.scsw.count = ccw.count - sizeof(status);
 519                 ret = 0;
 520             } else {
 521                 /* Trigger a command reject. */
 522                 ret = -ENOSYS;
 523             }
 524         }
 525         break;
 526     case CCW_CMD_SET_IND:
 527         if (check_len) {
 528             if (ccw.count != sizeof(indicators)) {
 529                 ret = -EINVAL;
 530                 break;
 531             }
 532         } else if (ccw.count < sizeof(indicators)) {
 533             /* Can't execute command. */
 534             ret = -EINVAL;
 535             break;
 536         }
 537         if (sch->thinint_active) {
 538             /* Trigger a command reject. */
 539             ret = -ENOSYS;
 540             break;
 541         }
 542         if (virtio_get_num_queues(vdev) > NR_CLASSIC_INDICATOR_BITS) {
 543             /* More queues than indicator bits --> trigger a reject */
 544             ret = -ENOSYS;
 545             break;
 546         }
 547         if (!ccw.cda) {
 548             ret = -EFAULT;
 549         } else {
 550             ccw_dstream_read(&sch->cds, indicators);
 551             be64_to_cpus(&indicators);
 552             dev->indicators = get_indicator(indicators, sizeof(uint64_t));
 553             sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
 554             ret = 0;
 555         }
 556         break;
 557     case CCW_CMD_SET_CONF_IND:
 558         if (check_len) {
 559             if (ccw.count != sizeof(indicators)) {
 560                 ret = -EINVAL;
 561                 break;
 562             }
 563         } else if (ccw.count < sizeof(indicators)) {
 564             /* Can't execute command. */
 565             ret = -EINVAL;
 566             break;
 567         }
 568         if (!ccw.cda) {
 569             ret = -EFAULT;
 570         } else {
 571             ccw_dstream_read(&sch->cds, indicators);
 572             be64_to_cpus(&indicators);
 573             dev->indicators2 = get_indicator(indicators, sizeof(uint64_t));
 574             sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
 575             ret = 0;
 576         }
 577         break;
 578     case CCW_CMD_READ_VQ_CONF:
 579         if (check_len) {
 580             if (ccw.count != sizeof(vq_config)) {
 581                 ret = -EINVAL;
 582                 break;
 583             }
 584         } else if (ccw.count < sizeof(vq_config)) {
 585             /* Can't execute command. */
 586             ret = -EINVAL;
 587             break;
 588         }
 589         if (!ccw.cda) {
 590             ret = -EFAULT;
 591         } else {
 592             ccw_dstream_read(&sch->cds, vq_config.index);
 593             be16_to_cpus(&vq_config.index);
 594             if (vq_config.index >= VIRTIO_QUEUE_MAX) {
 595                 ret = -EINVAL;
 596                 break;
 597             }
 598             vq_config.num_max = virtio_queue_get_num(vdev,
 599                                                      vq_config.index);
 600             cpu_to_be16s(&vq_config.num_max);
 601             ccw_dstream_write(&sch->cds, vq_config.num_max);
 602             sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
 603             ret = 0;
 604         }
 605         break;
 606     case CCW_CMD_SET_IND_ADAPTER:
 607         if (check_len) {
 608             if (ccw.count != sizeof(thinint)) {
 609                 ret = -EINVAL;
 610                 break;
 611             }
 612         } else if (ccw.count < sizeof(thinint)) {
 613             /* Can't execute command. */
 614             ret = -EINVAL;
 615             break;
 616         }
 617         if (!ccw.cda) {
 618             ret = -EFAULT;
 619         } else if (dev->indicators && !sch->thinint_active) {
 620             /* Trigger a command reject. */
 621             ret = -ENOSYS;
 622         } else {
 623             if (ccw_dstream_read(&sch->cds, thinint)) {
 624                 ret = -EFAULT;
 625             } else {
 626                 be64_to_cpus(&thinint.ind_bit);
 627                 be64_to_cpus(&thinint.summary_indicator);
 628                 be64_to_cpus(&thinint.device_indicator);
 629
 630                 dev->summary_indicator =
 631                     get_indicator(thinint.summary_indicator, sizeof(uint8_t));
 632                 dev->indicators =
 633                     get_indicator(thinint.device_indicator,
 634                                   thinint.ind_bit / 8 + 1);
 635                 dev->thinint_isc = thinint.isc;
 636                 dev->routes.adapter.ind_offset = thinint.ind_bit;
 637                 dev->routes.adapter.summary_offset = 7;
 638                 dev->routes.adapter.adapter_id = css_get_adapter_id(
 639                                                  CSS_IO_ADAPTER_VIRTIO,
 640                                                  dev->thinint_isc);
 641                 sch->thinint_active = ((dev->indicators != NULL) &&
 642                                        (dev->summary_indicator != NULL));
 643                 sch->curr_status.scsw.count = ccw.count - sizeof(thinint);
 644                 ret = 0;
 645             }
 646         }
 647         break;
 648     case CCW_CMD_SET_VIRTIO_REV:
 649         len = sizeof(revinfo);
 650         if (ccw.count < len) {
 651             ret = -EINVAL;
 652             break;
 653         }
 654         if (!ccw.cda) {
 655             ret = -EFAULT;
 656             break;
 657         }
 658         ccw_dstream_read_buf(&sch->cds, &revinfo, 4);
 659         be16_to_cpus(&revinfo.revision);
 660         be16_to_cpus(&revinfo.length);
 661         if (ccw.count < len + revinfo.length ||
 662             (check_len && ccw.count > len + revinfo.length)) {
 663             ret = -EINVAL;
 664             break;
 665         }
 666         /*
 667          * Once we start to support revisions with additional data, we'll
 668          * need to fetch it here. Nothing to do for now, though.
 669          */
 670         if (dev->revision >= 0 ||
 671             revinfo.revision > virtio_ccw_rev_max(dev) ||
 672             (dev->force_revision_1 && !revinfo.revision)) {
 673             ret = -ENOSYS;
 674             break;
 675         }
 676         ret = 0;
 677         dev->revision = revinfo.revision;
 678         break;
 679     default:
 680         ret = -ENOSYS;
 681         break;
 682     }
 683     return ret;
 684 }
 685
 686 static void virtio_sch_disable_cb(SubchDev *sch)
 687 {
 688     VirtioCcwDevice *dev = sch->driver_data;
 689
 690     dev->revision = -1;
 691 }
 692
 693 static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
 694 {
 695     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
 696     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 697     CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
 698     DeviceState *parent = DEVICE(ccw_dev);
 699     BusState *qbus = qdev_get_parent_bus(parent);
 700     VirtualCssBus *cbus = VIRTUAL_CSS_BUS(qbus);
 701     SubchDev *sch;
 702     Error *err = NULL;
 703
 704     sch = css_create_sch(ccw_dev->devno, true, cbus->squash_mcss, errp);
 705     if (!sch) {
 706         return;
 707     }
 708     if (!virtio_ccw_rev_max(dev) && dev->force_revision_1) {
 709         error_setg(&err, "Invalid value of property max_rev "
 710                    "(is %d expected >= 1)", virtio_ccw_rev_max(dev));
 711         goto out_err;
 712     }
 713
 714     sch->driver_data = dev;
 715     sch->ccw_cb = virtio_ccw_cb;
 716     sch->disable_cb = virtio_sch_disable_cb;
 717     sch->id.reserved = 0xff;
 718     sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
 719     sch->do_subchannel_work = do_subchannel_work_virtual;
 720     ccw_dev->sch = sch;
 721     dev->indicators = NULL;
 722     dev->revision = -1;
 723     css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
 724
 725     trace_virtio_ccw_new_device(
 726         sch->cssid, sch->ssid, sch->schid, sch->devno,
 727         ccw_dev->devno.valid ? "user-configured" : "auto-configured");
 728
 729     if (kvm_enabled() && !kvm_eventfds_enabled()) {
 730         dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
 731     }
 732
 733     if (k->realize) {
 734         k->realize(dev, &err);
 735         if (err) {
 736             goto out_err;
 737         }
 738     }
 739
 740     ck->realize(ccw_dev, &err);
 741     if (err) {
 742         goto out_err;
 743     }
 744
 745     return;
 746
 747 out_err:
 748     error_propagate(errp, err);
 749     css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
 750     ccw_dev->sch = NULL;
 751     g_free(sch);
 752 }
 753
 754 static int virtio_ccw_exit(VirtioCcwDevice *dev)
 755 {
 756     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 757     SubchDev *sch = ccw_dev->sch;
 758
 759     if (sch) {
 760         css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
 761         g_free(sch);
 762     }
 763     if (dev->indicators) {
 764         release_indicator(&dev->routes.adapter, dev->indicators);
 765         dev->indicators = NULL;
 766     }
 767     return 0;
 768 }
 769
 770 static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 771 {
 772     DeviceState *qdev = DEVICE(ccw_dev);
 773     VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev);
 774     DeviceState *vdev = DEVICE(&dev->vdev);
 775
 776     virtio_net_set_netclient_name(&dev->vdev, qdev->id,
 777                                   object_get_typename(OBJECT(qdev)));
 778     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 779     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 780 }
 781
 782 static void virtio_ccw_net_instance_init(Object *obj)
 783 {
 784     VirtIONetCcw *dev = VIRTIO_NET_CCW(obj);
 785
 786     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 787                                 TYPE_VIRTIO_NET);
 788     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 789                               "bootindex", &error_abort);
 790 }
 791
 792 static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 793 {
 794     VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev);
 795     DeviceState *vdev = DEVICE(&dev->vdev);
 796
 797     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 798     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 799 }
 800
 801 static void virtio_ccw_blk_instance_init(Object *obj)
 802 {
 803     VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
 804
 805     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 806                                 TYPE_VIRTIO_BLK);
 807     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 808                               "bootindex", &error_abort);
 809 }
 810
 811 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 812 {
 813     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev);
 814     DeviceState *vdev = DEVICE(&dev->vdev);
 815     DeviceState *proxy = DEVICE(ccw_dev);
 816     char *bus_name;
 817
 818     /*
 819      * For command line compatibility, this sets the virtio-serial-device bus
 820      * name as before.
 821      */
 822     if (proxy->id) {
 823         bus_name = g_strdup_printf("%s.0", proxy->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
 833 static void virtio_ccw_serial_instance_init(Object *obj)
 834 {
 835     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
 836
 837     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 838                                 TYPE_VIRTIO_SERIAL);
 839 }
 840
 841 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 842 {
 843     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev);
 844     DeviceState *vdev = DEVICE(&dev->vdev);
 845
 846     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 847     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 848 }
 849
 850 static void virtio_ccw_balloon_instance_init(Object *obj)
 851 {
 852     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
 853
 854     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 855                                 TYPE_VIRTIO_BALLOON);
 856     object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
 857                               "guest-stats", &error_abort);
 858     object_property_add_alias(obj, "guest-stats-polling-interval",
 859                               OBJECT(&dev->vdev),
 860                               "guest-stats-polling-interval", &error_abort);
 861 }
 862
 863 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 864 {
 865     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
 866     DeviceState *vdev = DEVICE(&dev->vdev);
 867     DeviceState *qdev = DEVICE(ccw_dev);
 868     char *bus_name;
 869
 870     /*
 871      * For command line compatibility, this sets the virtio-scsi-device bus
 872      * name as before.
 873      */
 874     if (qdev->id) {
 875         bus_name = g_strdup_printf("%s.0", qdev->id);
 876         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 877         g_free(bus_name);
 878     }
 879
 880     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 881     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 882 }
 883
 884 static void virtio_ccw_scsi_instance_init(Object *obj)
 885 {
 886     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
 887
 888     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 889                                 TYPE_VIRTIO_SCSI);
 890 }
 891
 892 #ifdef CONFIG_VHOST_SCSI
 893 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 894 {
 895     VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
 896     DeviceState *vdev = DEVICE(&dev->vdev);
 897
 898     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 899     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 900 }
 901
 902 static void vhost_ccw_scsi_instance_init(Object *obj)
 903 {
 904     VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
 905
 906     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 907                                 TYPE_VHOST_SCSI);
 908 }
 909 #endif
 910
 911 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 912 {
 913     VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
 914     DeviceState *vdev = DEVICE(&dev->vdev);
 915     Error *err = NULL;
 916
 917     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 918     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 919     if (err) {
 920         error_propagate(errp, err);
 921         return;
 922     }
 923
 924     object_property_set_link(OBJECT(dev),
 925                              OBJECT(dev->vdev.conf.rng), "rng",
 926                              NULL);
 927 }
 928
 929 static void virtio_ccw_crypto_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 930 {
 931     VirtIOCryptoCcw *dev = VIRTIO_CRYPTO_CCW(ccw_dev);
 932     DeviceState *vdev = DEVICE(&dev->vdev);
 933     Error *err = NULL;
 934
 935     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 936     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 937     if (err) {
 938         error_propagate(errp, err);
 939         return;
 940     }
 941
 942     object_property_set_link(OBJECT(vdev),
 943                              OBJECT(dev->vdev.conf.cryptodev), "cryptodev",
 944                              NULL);
 945 }
 946
 947 static void virtio_ccw_gpu_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 948 {
 949     VirtIOGPUCcw *dev = VIRTIO_GPU_CCW(ccw_dev);
 950     DeviceState *vdev = DEVICE(&dev->vdev);
 951
 952     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 953     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 954 }
 955
 956 /* DeviceState to VirtioCcwDevice. Note: used on datapath,
 957  * be careful and test performance if you change this.
 958  */
 959 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d)
 960 {
 961     CcwDevice *ccw_dev = to_ccw_dev_fast(d);
 962
 963     return container_of(ccw_dev, VirtioCcwDevice, parent_obj);
 964 }
 965
 966 static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc,
 967                                      uint8_t to_be_set)
 968 {
 969     uint8_t ind_old, ind_new;
 970     hwaddr len = 1;
 971     uint8_t *ind_addr;
 972
 973     ind_addr = cpu_physical_memory_map(ind_loc, &len, 1);
 974     if (!ind_addr) {
 975         error_report("%s(%x.%x.%04x): unable to access indicator",
 976                      __func__, sch->cssid, sch->ssid, sch->schid);
 977         return -1;
 978     }
 979     do {
 980         ind_old = *ind_addr;
 981         ind_new = ind_old | to_be_set;
 982     } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old);
 983     trace_virtio_ccw_set_ind(ind_loc, ind_old, ind_new);
 984     cpu_physical_memory_unmap(ind_addr, len, 1, len);
 985
 986     return ind_old;
 987 }
 988
 989 static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
 990 {
 991     VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d);
 992     CcwDevice *ccw_dev = to_ccw_dev_fast(d);
 993     SubchDev *sch = ccw_dev->sch;
 994     uint64_t indicators;
 995
 996     /* queue indicators + secondary indicators */
 997     if (vector >= VIRTIO_QUEUE_MAX + 64) {
 998         return;
 999     }
1000
1001     if (vector < VIRTIO_QUEUE_MAX) {
1002         if (!dev->indicators) {
1003             return;
1004         }
1005         if (sch->thinint_active) {
1006             /*
1007              * In the adapter interrupt case, indicators points to a
1008              * memory area that may be (way) larger than 64 bit and
1009              * ind_bit indicates the start of the indicators in a big
1010              * endian notation.
1011              */
1012             uint64_t ind_bit = dev->routes.adapter.ind_offset;
1013
1014             virtio_set_ind_atomic(sch, dev->indicators->addr +
1015                                   (ind_bit + vector) / 8,
1016                                   0x80 >> ((ind_bit + vector) % 8));
1017             if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr,
1018                                        0x01)) {
1019                 css_adapter_interrupt(CSS_IO_ADAPTER_VIRTIO, dev->thinint_isc);
1020             }
1021         } else {
1022             indicators = address_space_ldq(&address_space_memory,
1023                                            dev->indicators->addr,
1024                                            MEMTXATTRS_UNSPECIFIED,
1025                                            NULL);
1026             indicators |= 1ULL << vector;
1027             address_space_stq(&address_space_memory, dev->indicators->addr,
1028                               indicators, MEMTXATTRS_UNSPECIFIED, NULL);
1029             css_conditional_io_interrupt(sch);
1030         }
1031     } else {
1032         if (!dev->indicators2) {
1033             return;
1034         }
1035         vector = 0;
1036         indicators = address_space_ldq(&address_space_memory,
1037                                        dev->indicators2->addr,
1038                                        MEMTXATTRS_UNSPECIFIED,
1039                                        NULL);
1040         indicators |= 1ULL << vector;
1041         address_space_stq(&address_space_memory, dev->indicators2->addr,
1042                           indicators, MEMTXATTRS_UNSPECIFIED, NULL);
1043         css_conditional_io_interrupt(sch);
1044     }
1045 }
1046
1047 static void virtio_ccw_reset(DeviceState *d)
1048 {
1049     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1050     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1051     CcwDevice *ccw_dev = CCW_DEVICE(d);
1052
1053     virtio_ccw_reset_virtio(dev, vdev);
1054     css_reset_sch(ccw_dev->sch);
1055 }
1056
1057 static void virtio_ccw_vmstate_change(DeviceState *d, bool running)
1058 {
1059     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1060
1061     if (running) {
1062         virtio_ccw_start_ioeventfd(dev);
1063     } else {
1064         virtio_ccw_stop_ioeventfd(dev);
1065     }
1066 }
1067
1068 static bool virtio_ccw_query_guest_notifiers(DeviceState *d)
1069 {
1070     CcwDevice *dev = CCW_DEVICE(d);
1071
1072     return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA);
1073 }
1074
1075 static int virtio_ccw_get_mappings(VirtioCcwDevice *dev)
1076 {
1077     int r;
1078     CcwDevice *ccw_dev = CCW_DEVICE(dev);
1079
1080     if (!ccw_dev->sch->thinint_active) {
1081         return -EINVAL;
1082     }
1083
1084     r = map_indicator(&dev->routes.adapter, dev->summary_indicator);
1085     if (r) {
1086         return r;
1087     }
1088     r = map_indicator(&dev->routes.adapter, dev->indicators);
1089     if (r) {
1090         return r;
1091     }
1092     dev->routes.adapter.summary_addr = dev->summary_indicator->map;
1093     dev->routes.adapter.ind_addr = dev->indicators->map;
1094
1095     return 0;
1096 }
1097
1098 static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs)
1099 {
1100     int i;
1101     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1102     int ret;
1103     S390FLICState *fs = s390_get_flic();
1104     S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
1105
1106     ret = virtio_ccw_get_mappings(dev);
1107     if (ret) {
1108         return ret;
1109     }
1110     for (i = 0; i < nvqs; i++) {
1111         if (!virtio_queue_get_num(vdev, i)) {
1112             break;
1113         }
1114     }
1115     dev->routes.num_routes = i;
1116     return fsc->add_adapter_routes(fs, &dev->routes);
1117 }
1118
1119 static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs)
1120 {
1121     S390FLICState *fs = s390_get_flic();
1122     S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
1123
1124     fsc->release_adapter_routes(fs, &dev->routes);
1125 }
1126
1127 static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n)
1128 {
1129     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1130     VirtQueue *vq = virtio_get_queue(vdev, n);
1131     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1132
1133     return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL,
1134                                               dev->routes.gsi[n]);
1135 }
1136
1137 static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n)
1138 {
1139     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1140     VirtQueue *vq = virtio_get_queue(vdev, n);
1141     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1142     int ret;
1143
1144     ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier,
1145                                                 dev->routes.gsi[n]);
1146     assert(ret == 0);
1147 }
1148
1149 static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n,
1150                                          bool assign, bool with_irqfd)
1151 {
1152     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1153     VirtQueue *vq = virtio_get_queue(vdev, n);
1154     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1155     VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
1156
1157     if (assign) {
1158         int r = event_notifier_init(notifier, 0);
1159
1160         if (r < 0) {
1161             return r;
1162         }
1163         virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
1164         if (with_irqfd) {
1165             r = virtio_ccw_add_irqfd(dev, n);
1166             if (r) {
1167                 virtio_queue_set_guest_notifier_fd_handler(vq, false,
1168                                                            with_irqfd);
1169                 return r;
1170             }
1171         }
1172         /*
1173          * We do not support individual masking for channel devices, so we
1174          * need to manually trigger any guest masking callbacks here.
1175          */
1176         if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) {
1177             k->guest_notifier_mask(vdev, n, false);
1178         }
1179         /* get lost events and re-inject */
1180         if (k->guest_notifier_pending &&
1181             k->guest_notifier_pending(vdev, n)) {
1182             event_notifier_set(notifier);
1183         }
1184     } else {
1185         if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) {
1186             k->guest_notifier_mask(vdev, n, true);
1187         }
1188         if (with_irqfd) {
1189             virtio_ccw_remove_irqfd(dev, n);
1190         }
1191         virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
1192         event_notifier_cleanup(notifier);
1193     }
1194     return 0;
1195 }
1196
1197 static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs,
1198                                           bool assigned)
1199 {
1200     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1201     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1202     CcwDevice *ccw_dev = CCW_DEVICE(d);
1203     bool with_irqfd = ccw_dev->sch->thinint_active && kvm_irqfds_enabled();
1204     int r, n;
1205
1206     if (with_irqfd && assigned) {
1207         /* irq routes need to be set up before assigning irqfds */
1208         r = virtio_ccw_setup_irqroutes(dev, nvqs);
1209         if (r < 0) {
1210             goto irqroute_error;
1211         }
1212     }
1213     for (n = 0; n < nvqs; n++) {
1214         if (!virtio_queue_get_num(vdev, n)) {
1215             break;
1216         }
1217         r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd);
1218         if (r < 0) {
1219             goto assign_error;
1220         }
1221     }
1222     if (with_irqfd && !assigned) {
1223         /* release irq routes after irqfds have been released */
1224         virtio_ccw_release_irqroutes(dev, nvqs);
1225     }
1226     return 0;
1227
1228 assign_error:
1229     while (--n >= 0) {
1230         virtio_ccw_set_guest_notifier(dev, n, !assigned, false);
1231     }
1232 irqroute_error:
1233     if (with_irqfd && assigned) {
1234         virtio_ccw_release_irqroutes(dev, nvqs);
1235     }
1236     return r;
1237 }
1238
1239 static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f)
1240 {
1241     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1242     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1243
1244     qemu_put_be16(f, virtio_queue_vector(vdev, n));
1245 }
1246
1247 static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f)
1248 {
1249     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1250     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1251     uint16_t vector;
1252
1253     qemu_get_be16s(f, &vector);
1254     virtio_queue_set_vector(vdev, n , vector);
1255
1256     return 0;
1257 }
1258
1259 static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
1260 {
1261     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1262     vmstate_save_state(f, &vmstate_virtio_ccw_dev, dev, NULL);
1263 }
1264
1265 static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
1266 {
1267     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1268     return vmstate_load_state(f, &vmstate_virtio_ccw_dev, dev, 1);
1269 }
1270
1271 static void virtio_ccw_pre_plugged(DeviceState *d, Error **errp)
1272 {
1273    VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1274    VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1275
1276     if (dev->max_rev >= 1) {
1277         virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
1278     }
1279 }
1280
1281 /* This is called by virtio-bus just after the device is plugged. */
1282 static void virtio_ccw_device_plugged(DeviceState *d, Error **errp)
1283 {
1284     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1285     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1286     CcwDevice *ccw_dev = CCW_DEVICE(d);
1287     SubchDev *sch = ccw_dev->sch;
1288     int n = virtio_get_num_queues(vdev);
1289     S390FLICState *flic = s390_get_flic();
1290
1291     if (!virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
1292         dev->max_rev = 0;
1293     }
1294
1295     if (virtio_get_num_queues(vdev) > VIRTIO_QUEUE_MAX) {
1296         error_setg(errp, "The number of virtqueues %d "
1297                    "exceeds virtio limit %d", n,
1298                    VIRTIO_QUEUE_MAX);
1299         return;
1300     }
1301     if (virtio_get_num_queues(vdev) > flic->adapter_routes_max_batch) {
1302         error_setg(errp, "The number of virtqueues %d "
1303                    "exceeds flic adapter route limit %d", n,
1304                    flic->adapter_routes_max_batch);
1305         return;
1306     }
1307
1308     sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus);
1309
1310
1311     css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid,
1312                           d->hotplugged, 1);
1313 }
1314
1315 static void virtio_ccw_device_unplugged(DeviceState *d)
1316 {
1317     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1318
1319     virtio_ccw_stop_ioeventfd(dev);
1320 }
1321 /**************** Virtio-ccw Bus Device Descriptions *******************/
1322
1323 static Property virtio_ccw_net_properties[] = {
1324     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1325                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1326     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1327                        VIRTIO_CCW_MAX_REV),
1328     DEFINE_PROP_END_OF_LIST(),
1329 };
1330
1331 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data)
1332 {
1333     DeviceClass *dc = DEVICE_CLASS(klass);
1334     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1335
1336     k->realize = virtio_ccw_net_realize;
1337     k->exit = virtio_ccw_exit;
1338     dc->reset = virtio_ccw_reset;
1339     dc->props = virtio_ccw_net_properties;
1340     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
1341 }
1342
1343 static const TypeInfo virtio_ccw_net = {
1344     .name          = TYPE_VIRTIO_NET_CCW,
1345     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1346     .instance_size = sizeof(VirtIONetCcw),
1347     .instance_init = virtio_ccw_net_instance_init,
1348     .class_init    = virtio_ccw_net_class_init,
1349 };
1350
1351 static Property virtio_ccw_blk_properties[] = {
1352     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1353                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1354     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1355                        VIRTIO_CCW_MAX_REV),
1356     DEFINE_PROP_END_OF_LIST(),
1357 };
1358
1359 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
1360 {
1361     DeviceClass *dc = DEVICE_CLASS(klass);
1362     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1363
1364     k->realize = virtio_ccw_blk_realize;
1365     k->exit = virtio_ccw_exit;
1366     dc->reset = virtio_ccw_reset;
1367     dc->props = virtio_ccw_blk_properties;
1368     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1369 }
1370
1371 static const TypeInfo virtio_ccw_blk = {
1372     .name          = TYPE_VIRTIO_BLK_CCW,
1373     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1374     .instance_size = sizeof(VirtIOBlkCcw),
1375     .instance_init = virtio_ccw_blk_instance_init,
1376     .class_init    = virtio_ccw_blk_class_init,
1377 };
1378
1379 static Property virtio_ccw_serial_properties[] = {
1380     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1381                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1382     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1383                        VIRTIO_CCW_MAX_REV),
1384     DEFINE_PROP_END_OF_LIST(),
1385 };
1386
1387 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
1388 {
1389     DeviceClass *dc = DEVICE_CLASS(klass);
1390     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1391
1392     k->realize = virtio_ccw_serial_realize;
1393     k->exit = virtio_ccw_exit;
1394     dc->reset = virtio_ccw_reset;
1395     dc->props = virtio_ccw_serial_properties;
1396     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
1397 }
1398
1399 static const TypeInfo virtio_ccw_serial = {
1400     .name          = TYPE_VIRTIO_SERIAL_CCW,
1401     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1402     .instance_size = sizeof(VirtioSerialCcw),
1403     .instance_init = virtio_ccw_serial_instance_init,
1404     .class_init    = virtio_ccw_serial_class_init,
1405 };
1406
1407 static Property virtio_ccw_balloon_properties[] = {
1408     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1409                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1410     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1411                        VIRTIO_CCW_MAX_REV),
1412     DEFINE_PROP_END_OF_LIST(),
1413 };
1414
1415 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
1416 {
1417     DeviceClass *dc = DEVICE_CLASS(klass);
1418     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1419
1420     k->realize = virtio_ccw_balloon_realize;
1421     k->exit = virtio_ccw_exit;
1422     dc->reset = virtio_ccw_reset;
1423     dc->props = virtio_ccw_balloon_properties;
1424     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1425 }
1426
1427 static const TypeInfo virtio_ccw_balloon = {
1428     .name          = TYPE_VIRTIO_BALLOON_CCW,
1429     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1430     .instance_size = sizeof(VirtIOBalloonCcw),
1431     .instance_init = virtio_ccw_balloon_instance_init,
1432     .class_init    = virtio_ccw_balloon_class_init,
1433 };
1434
1435 static Property virtio_ccw_scsi_properties[] = {
1436     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1437                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1438     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1439                        VIRTIO_CCW_MAX_REV),
1440     DEFINE_PROP_END_OF_LIST(),
1441 };
1442
1443 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
1444 {
1445     DeviceClass *dc = DEVICE_CLASS(klass);
1446     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1447
1448     k->realize = virtio_ccw_scsi_realize;
1449     k->exit = virtio_ccw_exit;
1450     dc->reset = virtio_ccw_reset;
1451     dc->props = virtio_ccw_scsi_properties;
1452     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1453 }
1454
1455 static const TypeInfo virtio_ccw_scsi = {
1456     .name          = TYPE_VIRTIO_SCSI_CCW,
1457     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1458     .instance_size = sizeof(VirtIOSCSICcw),
1459     .instance_init = virtio_ccw_scsi_instance_init,
1460     .class_init    = virtio_ccw_scsi_class_init,
1461 };
1462
1463 #ifdef CONFIG_VHOST_SCSI
1464 static Property vhost_ccw_scsi_properties[] = {
1465     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1466                        VIRTIO_CCW_MAX_REV),
1467     DEFINE_PROP_END_OF_LIST(),
1468 };
1469
1470 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data)
1471 {
1472     DeviceClass *dc = DEVICE_CLASS(klass);
1473     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1474
1475     k->realize = vhost_ccw_scsi_realize;
1476     k->exit = virtio_ccw_exit;
1477     dc->reset = virtio_ccw_reset;
1478     dc->props = vhost_ccw_scsi_properties;
1479     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1480 }
1481
1482 static const TypeInfo vhost_ccw_scsi = {
1483     .name          = TYPE_VHOST_SCSI_CCW,
1484     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1485     .instance_size = sizeof(VHostSCSICcw),
1486     .instance_init = vhost_ccw_scsi_instance_init,
1487     .class_init    = vhost_ccw_scsi_class_init,
1488 };
1489 #endif
1490
1491 static void virtio_ccw_rng_instance_init(Object *obj)
1492 {
1493     VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
1494
1495     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1496                                 TYPE_VIRTIO_RNG);
1497 }
1498
1499 static Property virtio_ccw_rng_properties[] = {
1500     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1501                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1502     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1503                        VIRTIO_CCW_MAX_REV),
1504     DEFINE_PROP_END_OF_LIST(),
1505 };
1506
1507 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
1508 {
1509     DeviceClass *dc = DEVICE_CLASS(klass);
1510     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1511
1512     k->realize = virtio_ccw_rng_realize;
1513     k->exit = virtio_ccw_exit;
1514     dc->reset = virtio_ccw_reset;
1515     dc->props = virtio_ccw_rng_properties;
1516     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1517 }
1518
1519 static const TypeInfo virtio_ccw_rng = {
1520     .name          = TYPE_VIRTIO_RNG_CCW,
1521     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1522     .instance_size = sizeof(VirtIORNGCcw),
1523     .instance_init = virtio_ccw_rng_instance_init,
1524     .class_init    = virtio_ccw_rng_class_init,
1525 };
1526
1527 static Property virtio_ccw_crypto_properties[] = {
1528     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1529                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1530     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1531                        VIRTIO_CCW_MAX_REV),
1532     DEFINE_PROP_END_OF_LIST(),
1533 };
1534
1535 static void virtio_ccw_crypto_instance_init(Object *obj)
1536 {
1537     VirtIOCryptoCcw *dev = VIRTIO_CRYPTO_CCW(obj);
1538     VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
1539
1540     ccw_dev->force_revision_1 = true;
1541     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1542                                 TYPE_VIRTIO_CRYPTO);
1543 }
1544
1545 static void virtio_ccw_crypto_class_init(ObjectClass *klass, void *data)
1546 {
1547     DeviceClass *dc = DEVICE_CLASS(klass);
1548     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1549
1550     k->realize = virtio_ccw_crypto_realize;
1551     k->exit = virtio_ccw_exit;
1552     dc->reset = virtio_ccw_reset;
1553     dc->props = virtio_ccw_crypto_properties;
1554     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1555 }
1556
1557 static const TypeInfo virtio_ccw_crypto = {
1558     .name          = TYPE_VIRTIO_CRYPTO_CCW,
1559     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1560     .instance_size = sizeof(VirtIOCryptoCcw),
1561     .instance_init = virtio_ccw_crypto_instance_init,
1562     .class_init    = virtio_ccw_crypto_class_init,
1563 };
1564
1565 static Property virtio_ccw_gpu_properties[] = {
1566     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1567                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1568     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1569                        VIRTIO_CCW_MAX_REV),
1570     DEFINE_PROP_END_OF_LIST(),
1571 };
1572
1573 static void virtio_ccw_gpu_instance_init(Object *obj)
1574 {
1575     VirtIOGPUCcw *dev = VIRTIO_GPU_CCW(obj);
1576     VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
1577
1578     ccw_dev->force_revision_1 = true;
1579     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1580                                 TYPE_VIRTIO_GPU);
1581 }
1582
1583 static void virtio_ccw_gpu_class_init(ObjectClass *klass, void *data)
1584 {
1585     DeviceClass *dc = DEVICE_CLASS(klass);
1586     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1587
1588     k->realize = virtio_ccw_gpu_realize;
1589     k->exit = virtio_ccw_exit;
1590     dc->reset = virtio_ccw_reset;
1591     dc->props = virtio_ccw_gpu_properties;
1592     dc->hotpluggable = false;
1593     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
1594 }
1595
1596 static const TypeInfo virtio_ccw_gpu = {
1597     .name          = TYPE_VIRTIO_GPU_CCW,
1598     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1599     .instance_size = sizeof(VirtIOGPUCcw),
1600     .instance_init = virtio_ccw_gpu_instance_init,
1601     .class_init    = virtio_ccw_gpu_class_init,
1602 };
1603
1604 static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp)
1605 {
1606     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
1607
1608     virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
1609     virtio_ccw_device_realize(_dev, errp);
1610 }
1611
1612 static int virtio_ccw_busdev_exit(DeviceState *dev)
1613 {
1614     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
1615     VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
1616
1617     return _info->exit(_dev);
1618 }
1619
1620 static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev,
1621                                      DeviceState *dev, Error **errp)
1622 {
1623     VirtioCcwDevice *_dev = to_virtio_ccw_dev_fast(dev);
1624
1625     virtio_ccw_stop_ioeventfd(_dev);
1626 }
1627
1628 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data)
1629 {
1630     DeviceClass *dc = DEVICE_CLASS(klass);
1631     CCWDeviceClass *k = CCW_DEVICE_CLASS(dc);
1632
1633     k->unplug = virtio_ccw_busdev_unplug;
1634     dc->realize = virtio_ccw_busdev_realize;
1635     dc->exit = virtio_ccw_busdev_exit;
1636     dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
1637 }
1638
1639 static const TypeInfo virtio_ccw_device_info = {
1640     .name = TYPE_VIRTIO_CCW_DEVICE,
1641     .parent = TYPE_CCW_DEVICE,
1642     .instance_size = sizeof(VirtioCcwDevice),
1643     .class_init = virtio_ccw_device_class_init,
1644     .class_size = sizeof(VirtIOCCWDeviceClass),
1645     .abstract = true,
1646 };
1647
1648 /* virtio-ccw-bus */
1649
1650 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
1651                                VirtioCcwDevice *dev)
1652 {
1653     DeviceState *qdev = DEVICE(dev);
1654     char virtio_bus_name[] = "virtio-bus";
1655
1656     qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS,
1657                         qdev, virtio_bus_name);
1658 }
1659
1660 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
1661 {
1662     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
1663     BusClass *bus_class = BUS_CLASS(klass);
1664
1665     bus_class->max_dev = 1;
1666     k->notify = virtio_ccw_notify;
1667     k->vmstate_change = virtio_ccw_vmstate_change;
1668     k->query_guest_notifiers = virtio_ccw_query_guest_notifiers;
1669     k->set_guest_notifiers = virtio_ccw_set_guest_notifiers;
1670     k->save_queue = virtio_ccw_save_queue;
1671     k->load_queue = virtio_ccw_load_queue;
1672     k->save_config = virtio_ccw_save_config;
1673     k->load_config = virtio_ccw_load_config;
1674     k->pre_plugged = virtio_ccw_pre_plugged;
1675     k->device_plugged = virtio_ccw_device_plugged;
1676     k->device_unplugged = virtio_ccw_device_unplugged;
1677     k->ioeventfd_enabled = virtio_ccw_ioeventfd_enabled;
1678     k->ioeventfd_assign = virtio_ccw_ioeventfd_assign;
1679 }
1680
1681 static const TypeInfo virtio_ccw_bus_info = {
1682     .name = TYPE_VIRTIO_CCW_BUS,
1683     .parent = TYPE_VIRTIO_BUS,
1684     .instance_size = sizeof(VirtioCcwBusState),
1685     .class_init = virtio_ccw_bus_class_init,
1686 };
1687
1688 #ifdef CONFIG_VIRTFS
1689 static Property virtio_ccw_9p_properties[] = {
1690     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1691             VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1692     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1693                        VIRTIO_CCW_MAX_REV),
1694     DEFINE_PROP_END_OF_LIST(),
1695 };
1696
1697 static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp)
1698 {
1699     V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev);
1700     DeviceState *vdev = DEVICE(&dev->vdev);
1701
1702     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
1703     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1704 }
1705
1706 static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data)
1707 {
1708     DeviceClass *dc = DEVICE_CLASS(klass);
1709     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1710
1711     k->exit = virtio_ccw_exit;
1712     k->realize = virtio_ccw_9p_realize;
1713     dc->reset = virtio_ccw_reset;
1714     dc->props = virtio_ccw_9p_properties;
1715     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1716 }
1717
1718 static void virtio_ccw_9p_instance_init(Object *obj)
1719 {
1720     V9fsCCWState *dev = VIRTIO_9P_CCW(obj);
1721
1722     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1723                                 TYPE_VIRTIO_9P);
1724 }
1725
1726 static const TypeInfo virtio_ccw_9p_info = {
1727     .name          = TYPE_VIRTIO_9P_CCW,
1728     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1729     .instance_size = sizeof(V9fsCCWState),
1730     .instance_init = virtio_ccw_9p_instance_init,
1731     .class_init    = virtio_ccw_9p_class_init,
1732 };
1733 #endif
1734
1735 #ifdef CONFIG_VHOST_VSOCK
1736
1737 static Property vhost_vsock_ccw_properties[] = {
1738     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1739                        VIRTIO_CCW_MAX_REV),
1740     DEFINE_PROP_END_OF_LIST(),
1741 };
1742
1743 static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp)
1744 {
1745     VHostVSockCCWState *dev = VHOST_VSOCK_CCW(ccw_dev);
1746     DeviceState *vdev = DEVICE(&dev->vdev);
1747     Error *err = NULL;
1748
1749     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
1750     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
1751     error_propagate(errp, err);
1752 }
1753
1754 static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)
1755 {
1756     DeviceClass *dc = DEVICE_CLASS(klass);
1757     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1758
1759     k->realize = vhost_vsock_ccw_realize;
1760     k->exit = virtio_ccw_exit;
1761     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1762     dc->props = vhost_vsock_ccw_properties;
1763     dc->reset = virtio_ccw_reset;
1764 }
1765
1766 static void vhost_vsock_ccw_instance_init(Object *obj)
1767 {
1768     VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj);
1769
1770     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1771                                 TYPE_VHOST_VSOCK);
1772 }
1773
1774 static const TypeInfo vhost_vsock_ccw_info = {
1775     .name          = TYPE_VHOST_VSOCK_CCW,
1776     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1777     .instance_size = sizeof(VHostVSockCCWState),
1778     .instance_init = vhost_vsock_ccw_instance_init,
1779     .class_init    = vhost_vsock_ccw_class_init,
1780 };
1781 #endif
1782
1783 static void virtio_ccw_register(void)
1784 {
1785     type_register_static(&virtio_ccw_bus_info);
1786     type_register_static(&virtio_ccw_device_info);
1787     type_register_static(&virtio_ccw_serial);
1788     type_register_static(&virtio_ccw_blk);
1789     type_register_static(&virtio_ccw_net);
1790     type_register_static(&virtio_ccw_balloon);
1791     type_register_static(&virtio_ccw_scsi);
1792 #ifdef CONFIG_VHOST_SCSI
1793     type_register_static(&vhost_ccw_scsi);
1794 #endif
1795     type_register_static(&virtio_ccw_rng);
1796 #ifdef CONFIG_VIRTFS
1797     type_register_static(&virtio_ccw_9p_info);
1798 #endif
1799 #ifdef CONFIG_VHOST_VSOCK
1800     type_register_static(&vhost_vsock_ccw_info);
1801 #endif
1802     type_register_static(&virtio_ccw_crypto);
1803     type_register_static(&virtio_ccw_gpu);
1804 }
1805
1806 type_init(virtio_ccw_register)