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                     qemu_log_mask(LOG_GUEST_ERROR,
 430                                   "Guest bug: features[%i]=%x (expected 0)",
 431                                   features.index, features.features);
 432                     /* XXX: do a unit check here? */
 433                 }
 434             }
 435             sch->curr_status.scsw.count = ccw.count - sizeof(features);
 436             ret = 0;
 437         }
 438         break;
 439     case CCW_CMD_READ_CONF:
 440         if (check_len) {
 441             if (ccw.count > vdev->config_len) {
 442                 ret = -EINVAL;
 443                 break;
 444             }
 445         }
 446         len = MIN(ccw.count, vdev->config_len);
 447         if (!ccw.cda) {
 448             ret = -EFAULT;
 449         } else {
 450             virtio_bus_get_vdev_config(&dev->bus, vdev->config);
 451             ccw_dstream_write_buf(&sch->cds, vdev->config, len);
 452             sch->curr_status.scsw.count = ccw.count - len;
 453             ret = 0;
 454         }
 455         break;
 456     case CCW_CMD_WRITE_CONF:
 457         if (check_len) {
 458             if (ccw.count > vdev->config_len) {
 459                 ret = -EINVAL;
 460                 break;
 461             }
 462         }
 463         len = MIN(ccw.count, vdev->config_len);
 464         if (!ccw.cda) {
 465             ret = -EFAULT;
 466         } else {
 467             ret = ccw_dstream_read_buf(&sch->cds, vdev->config, len);
 468             if (!ret) {
 469                 virtio_bus_set_vdev_config(&dev->bus, vdev->config);
 470                 sch->curr_status.scsw.count = ccw.count - len;
 471             }
 472         }
 473         break;
 474     case CCW_CMD_READ_STATUS:
 475         if (check_len) {
 476             if (ccw.count != sizeof(status)) {
 477                 ret = -EINVAL;
 478                 break;
 479             }
 480         } else if (ccw.count < sizeof(status)) {
 481             /* Can't execute command. */
 482             ret = -EINVAL;
 483             break;
 484         }
 485         if (!ccw.cda) {
 486             ret = -EFAULT;
 487         } else {
 488             address_space_stb(&address_space_memory, ccw.cda, vdev->status,
 489                                         MEMTXATTRS_UNSPECIFIED, NULL);
 490             sch->curr_status.scsw.count = ccw.count - sizeof(vdev->status);
 491             ret = 0;
 492         }
 493         break;
 494     case CCW_CMD_WRITE_STATUS:
 495         if (check_len) {
 496             if (ccw.count != sizeof(status)) {
 497                 ret = -EINVAL;
 498                 break;
 499             }
 500         } else if (ccw.count < sizeof(status)) {
 501             /* Can't execute command. */
 502             ret = -EINVAL;
 503             break;
 504         }
 505         if (!ccw.cda) {
 506             ret = -EFAULT;
 507         } else {
 508             ccw_dstream_read(&sch->cds, status);
 509             if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
 510                 virtio_ccw_stop_ioeventfd(dev);
 511             }
 512             if (virtio_set_status(vdev, status) == 0) {
 513                 if (vdev->status == 0) {
 514                     virtio_ccw_reset_virtio(dev, vdev);
 515                 }
 516                 if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
 517                     virtio_ccw_start_ioeventfd(dev);
 518                 }
 519                 sch->curr_status.scsw.count = ccw.count - sizeof(status);
 520                 ret = 0;
 521             } else {
 522                 /* Trigger a command reject. */
 523                 ret = -ENOSYS;
 524             }
 525         }
 526         break;
 527     case CCW_CMD_SET_IND:
 528         if (check_len) {
 529             if (ccw.count != sizeof(indicators)) {
 530                 ret = -EINVAL;
 531                 break;
 532             }
 533         } else if (ccw.count < sizeof(indicators)) {
 534             /* Can't execute command. */
 535             ret = -EINVAL;
 536             break;
 537         }
 538         if (sch->thinint_active) {
 539             /* Trigger a command reject. */
 540             ret = -ENOSYS;
 541             break;
 542         }
 543         if (virtio_get_num_queues(vdev) > NR_CLASSIC_INDICATOR_BITS) {
 544             /* More queues than indicator bits --> trigger a reject */
 545             ret = -ENOSYS;
 546             break;
 547         }
 548         if (!ccw.cda) {
 549             ret = -EFAULT;
 550         } else {
 551             ccw_dstream_read(&sch->cds, indicators);
 552             be64_to_cpus(&indicators);
 553             dev->indicators = get_indicator(indicators, sizeof(uint64_t));
 554             sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
 555             ret = 0;
 556         }
 557         break;
 558     case CCW_CMD_SET_CONF_IND:
 559         if (check_len) {
 560             if (ccw.count != sizeof(indicators)) {
 561                 ret = -EINVAL;
 562                 break;
 563             }
 564         } else if (ccw.count < sizeof(indicators)) {
 565             /* Can't execute command. */
 566             ret = -EINVAL;
 567             break;
 568         }
 569         if (!ccw.cda) {
 570             ret = -EFAULT;
 571         } else {
 572             ccw_dstream_read(&sch->cds, indicators);
 573             be64_to_cpus(&indicators);
 574             dev->indicators2 = get_indicator(indicators, sizeof(uint64_t));
 575             sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
 576             ret = 0;
 577         }
 578         break;
 579     case CCW_CMD_READ_VQ_CONF:
 580         if (check_len) {
 581             if (ccw.count != sizeof(vq_config)) {
 582                 ret = -EINVAL;
 583                 break;
 584             }
 585         } else if (ccw.count < sizeof(vq_config)) {
 586             /* Can't execute command. */
 587             ret = -EINVAL;
 588             break;
 589         }
 590         if (!ccw.cda) {
 591             ret = -EFAULT;
 592         } else {
 593             ccw_dstream_read(&sch->cds, vq_config.index);
 594             be16_to_cpus(&vq_config.index);
 595             if (vq_config.index >= VIRTIO_QUEUE_MAX) {
 596                 ret = -EINVAL;
 597                 break;
 598             }
 599             vq_config.num_max = virtio_queue_get_num(vdev,
 600                                                      vq_config.index);
 601             cpu_to_be16s(&vq_config.num_max);
 602             ccw_dstream_write(&sch->cds, vq_config.num_max);
 603             sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
 604             ret = 0;
 605         }
 606         break;
 607     case CCW_CMD_SET_IND_ADAPTER:
 608         if (check_len) {
 609             if (ccw.count != sizeof(thinint)) {
 610                 ret = -EINVAL;
 611                 break;
 612             }
 613         } else if (ccw.count < sizeof(thinint)) {
 614             /* Can't execute command. */
 615             ret = -EINVAL;
 616             break;
 617         }
 618         if (!ccw.cda) {
 619             ret = -EFAULT;
 620         } else if (dev->indicators && !sch->thinint_active) {
 621             /* Trigger a command reject. */
 622             ret = -ENOSYS;
 623         } else {
 624             if (ccw_dstream_read(&sch->cds, thinint)) {
 625                 ret = -EFAULT;
 626             } else {
 627                 be64_to_cpus(&thinint.ind_bit);
 628                 be64_to_cpus(&thinint.summary_indicator);
 629                 be64_to_cpus(&thinint.device_indicator);
 630
 631                 dev->summary_indicator =
 632                     get_indicator(thinint.summary_indicator, sizeof(uint8_t));
 633                 dev->indicators =
 634                     get_indicator(thinint.device_indicator,
 635                                   thinint.ind_bit / 8 + 1);
 636                 dev->thinint_isc = thinint.isc;
 637                 dev->routes.adapter.ind_offset = thinint.ind_bit;
 638                 dev->routes.adapter.summary_offset = 7;
 639                 dev->routes.adapter.adapter_id = css_get_adapter_id(
 640                                                  CSS_IO_ADAPTER_VIRTIO,
 641                                                  dev->thinint_isc);
 642                 sch->thinint_active = ((dev->indicators != NULL) &&
 643                                        (dev->summary_indicator != NULL));
 644                 sch->curr_status.scsw.count = ccw.count - sizeof(thinint);
 645                 ret = 0;
 646             }
 647         }
 648         break;
 649     case CCW_CMD_SET_VIRTIO_REV:
 650         len = sizeof(revinfo);
 651         if (ccw.count < len) {
 652             ret = -EINVAL;
 653             break;
 654         }
 655         if (!ccw.cda) {
 656             ret = -EFAULT;
 657             break;
 658         }
 659         ccw_dstream_read_buf(&sch->cds, &revinfo, 4);
 660         be16_to_cpus(&revinfo.revision);
 661         be16_to_cpus(&revinfo.length);
 662         if (ccw.count < len + revinfo.length ||
 663             (check_len && ccw.count > len + revinfo.length)) {
 664             ret = -EINVAL;
 665             break;
 666         }
 667         /*
 668          * Once we start to support revisions with additional data, we'll
 669          * need to fetch it here. Nothing to do for now, though.
 670          */
 671         if (dev->revision >= 0 ||
 672             revinfo.revision > virtio_ccw_rev_max(dev) ||
 673             (dev->force_revision_1 && !revinfo.revision)) {
 674             ret = -ENOSYS;
 675             break;
 676         }
 677         ret = 0;
 678         dev->revision = revinfo.revision;
 679         break;
 680     default:
 681         ret = -ENOSYS;
 682         break;
 683     }
 684     return ret;
 685 }
 686
 687 static void virtio_sch_disable_cb(SubchDev *sch)
 688 {
 689     VirtioCcwDevice *dev = sch->driver_data;
 690
 691     dev->revision = -1;
 692 }
 693
 694 static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
 695 {
 696     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
 697     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 698     CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
 699     DeviceState *parent = DEVICE(ccw_dev);
 700     BusState *qbus = qdev_get_parent_bus(parent);
 701     VirtualCssBus *cbus = VIRTUAL_CSS_BUS(qbus);
 702     SubchDev *sch;
 703     Error *err = NULL;
 704
 705     sch = css_create_sch(ccw_dev->devno, cbus->squash_mcss, errp);
 706     if (!sch) {
 707         return;
 708     }
 709     if (!virtio_ccw_rev_max(dev) && dev->force_revision_1) {
 710         error_setg(&err, "Invalid value of property max_rev "
 711                    "(is %d expected >= 1)", virtio_ccw_rev_max(dev));
 712         goto out_err;
 713     }
 714
 715     sch->driver_data = dev;
 716     sch->ccw_cb = virtio_ccw_cb;
 717     sch->disable_cb = virtio_sch_disable_cb;
 718     sch->id.reserved = 0xff;
 719     sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
 720     sch->do_subchannel_work = do_subchannel_work_virtual;
 721     ccw_dev->sch = sch;
 722     dev->indicators = NULL;
 723     dev->revision = -1;
 724     css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
 725
 726     trace_virtio_ccw_new_device(
 727         sch->cssid, sch->ssid, sch->schid, sch->devno,
 728         ccw_dev->devno.valid ? "user-configured" : "auto-configured");
 729
 730     if (kvm_enabled() && !kvm_eventfds_enabled()) {
 731         dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
 732     }
 733
 734     if (k->realize) {
 735         k->realize(dev, &err);
 736         if (err) {
 737             goto out_err;
 738         }
 739     }
 740
 741     ck->realize(ccw_dev, &err);
 742     if (err) {
 743         goto out_err;
 744     }
 745
 746     return;
 747
 748 out_err:
 749     error_propagate(errp, err);
 750     css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
 751     ccw_dev->sch = NULL;
 752     g_free(sch);
 753 }
 754
 755 static int virtio_ccw_exit(VirtioCcwDevice *dev)
 756 {
 757     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 758     SubchDev *sch = ccw_dev->sch;
 759
 760     if (sch) {
 761         css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
 762         g_free(sch);
 763     }
 764     if (dev->indicators) {
 765         release_indicator(&dev->routes.adapter, dev->indicators);
 766         dev->indicators = NULL;
 767     }
 768     return 0;
 769 }
 770
 771 static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 772 {
 773     DeviceState *qdev = DEVICE(ccw_dev);
 774     VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev);
 775     DeviceState *vdev = DEVICE(&dev->vdev);
 776
 777     virtio_net_set_netclient_name(&dev->vdev, qdev->id,
 778                                   object_get_typename(OBJECT(qdev)));
 779     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 780     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 781 }
 782
 783 static void virtio_ccw_net_instance_init(Object *obj)
 784 {
 785     VirtIONetCcw *dev = VIRTIO_NET_CCW(obj);
 786
 787     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 788                                 TYPE_VIRTIO_NET);
 789     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 790                               "bootindex", &error_abort);
 791 }
 792
 793 static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 794 {
 795     VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev);
 796     DeviceState *vdev = DEVICE(&dev->vdev);
 797
 798     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 799     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 800 }
 801
 802 static void virtio_ccw_blk_instance_init(Object *obj)
 803 {
 804     VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
 805
 806     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 807                                 TYPE_VIRTIO_BLK);
 808     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 809                               "bootindex", &error_abort);
 810 }
 811
 812 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 813 {
 814     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev);
 815     DeviceState *vdev = DEVICE(&dev->vdev);
 816     DeviceState *proxy = DEVICE(ccw_dev);
 817     char *bus_name;
 818
 819     /*
 820      * For command line compatibility, this sets the virtio-serial-device bus
 821      * name as before.
 822      */
 823     if (proxy->id) {
 824         bus_name = g_strdup_printf("%s.0", proxy->id);
 825         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 826         g_free(bus_name);
 827     }
 828
 829     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 830     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 831 }
 832
 833
 834 static void virtio_ccw_serial_instance_init(Object *obj)
 835 {
 836     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
 837
 838     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 839                                 TYPE_VIRTIO_SERIAL);
 840 }
 841
 842 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 843 {
 844     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev);
 845     DeviceState *vdev = DEVICE(&dev->vdev);
 846
 847     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 848     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 849 }
 850
 851 static void virtio_ccw_balloon_instance_init(Object *obj)
 852 {
 853     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
 854
 855     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 856                                 TYPE_VIRTIO_BALLOON);
 857     object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
 858                               "guest-stats", &error_abort);
 859     object_property_add_alias(obj, "guest-stats-polling-interval",
 860                               OBJECT(&dev->vdev),
 861                               "guest-stats-polling-interval", &error_abort);
 862 }
 863
 864 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 865 {
 866     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
 867     DeviceState *vdev = DEVICE(&dev->vdev);
 868     DeviceState *qdev = DEVICE(ccw_dev);
 869     char *bus_name;
 870
 871     /*
 872      * For command line compatibility, this sets the virtio-scsi-device bus
 873      * name as before.
 874      */
 875     if (qdev->id) {
 876         bus_name = g_strdup_printf("%s.0", qdev->id);
 877         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 878         g_free(bus_name);
 879     }
 880
 881     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 882     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 883 }
 884
 885 static void virtio_ccw_scsi_instance_init(Object *obj)
 886 {
 887     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
 888
 889     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 890                                 TYPE_VIRTIO_SCSI);
 891 }
 892
 893 #ifdef CONFIG_VHOST_SCSI
 894 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 895 {
 896     VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
 897     DeviceState *vdev = DEVICE(&dev->vdev);
 898
 899     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 900     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 901 }
 902
 903 static void vhost_ccw_scsi_instance_init(Object *obj)
 904 {
 905     VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
 906
 907     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 908                                 TYPE_VHOST_SCSI);
 909 }
 910 #endif
 911
 912 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 913 {
 914     VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
 915     DeviceState *vdev = DEVICE(&dev->vdev);
 916     Error *err = NULL;
 917
 918     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 919     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 920     if (err) {
 921         error_propagate(errp, err);
 922         return;
 923     }
 924
 925     object_property_set_link(OBJECT(dev),
 926                              OBJECT(dev->vdev.conf.rng), "rng",
 927                              NULL);
 928 }
 929
 930 static void virtio_ccw_crypto_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 931 {
 932     VirtIOCryptoCcw *dev = VIRTIO_CRYPTO_CCW(ccw_dev);
 933     DeviceState *vdev = DEVICE(&dev->vdev);
 934     Error *err = NULL;
 935
 936     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 937     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 938     if (err) {
 939         error_propagate(errp, err);
 940         return;
 941     }
 942
 943     object_property_set_link(OBJECT(vdev),
 944                              OBJECT(dev->vdev.conf.cryptodev), "cryptodev",
 945                              NULL);
 946 }
 947
 948 static void virtio_ccw_gpu_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 949 {
 950     VirtIOGPUCcw *dev = VIRTIO_GPU_CCW(ccw_dev);
 951     DeviceState *vdev = DEVICE(&dev->vdev);
 952
 953     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 954     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 955 }
 956
 957 static void virtio_ccw_input_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 958 {
 959     VirtIOInputCcw *dev = VIRTIO_INPUT_CCW(ccw_dev);
 960     DeviceState *vdev = DEVICE(&dev->vdev);
 961
 962     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 963     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 964 }
 965
 966 /* DeviceState to VirtioCcwDevice. Note: used on datapath,
 967  * be careful and test performance if you change this.
 968  */
 969 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d)
 970 {
 971     CcwDevice *ccw_dev = to_ccw_dev_fast(d);
 972
 973     return container_of(ccw_dev, VirtioCcwDevice, parent_obj);
 974 }
 975
 976 static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc,
 977                                      uint8_t to_be_set)
 978 {
 979     uint8_t ind_old, ind_new;
 980     hwaddr len = 1;
 981     uint8_t *ind_addr;
 982
 983     ind_addr = cpu_physical_memory_map(ind_loc, &len, 1);
 984     if (!ind_addr) {
 985         error_report("%s(%x.%x.%04x): unable to access indicator",
 986                      __func__, sch->cssid, sch->ssid, sch->schid);
 987         return -1;
 988     }
 989     do {
 990         ind_old = *ind_addr;
 991         ind_new = ind_old | to_be_set;
 992     } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old);
 993     trace_virtio_ccw_set_ind(ind_loc, ind_old, ind_new);
 994     cpu_physical_memory_unmap(ind_addr, len, 1, len);
 995
 996     return ind_old;
 997 }
 998
 999 static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
1000 {
1001     VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d);
1002     CcwDevice *ccw_dev = to_ccw_dev_fast(d);
1003     SubchDev *sch = ccw_dev->sch;
1004     uint64_t indicators;
1005
1006     /* queue indicators + secondary indicators */
1007     if (vector >= VIRTIO_QUEUE_MAX + 64) {
1008         return;
1009     }
1010
1011     if (vector < VIRTIO_QUEUE_MAX) {
1012         if (!dev->indicators) {
1013             return;
1014         }
1015         if (sch->thinint_active) {
1016             /*
1017              * In the adapter interrupt case, indicators points to a
1018              * memory area that may be (way) larger than 64 bit and
1019              * ind_bit indicates the start of the indicators in a big
1020              * endian notation.
1021              */
1022             uint64_t ind_bit = dev->routes.adapter.ind_offset;
1023
1024             virtio_set_ind_atomic(sch, dev->indicators->addr +
1025                                   (ind_bit + vector) / 8,
1026                                   0x80 >> ((ind_bit + vector) % 8));
1027             if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr,
1028                                        0x01)) {
1029                 css_adapter_interrupt(CSS_IO_ADAPTER_VIRTIO, dev->thinint_isc);
1030             }
1031         } else {
1032             indicators = address_space_ldq(&address_space_memory,
1033                                            dev->indicators->addr,
1034                                            MEMTXATTRS_UNSPECIFIED,
1035                                            NULL);
1036             indicators |= 1ULL << vector;
1037             address_space_stq(&address_space_memory, dev->indicators->addr,
1038                               indicators, MEMTXATTRS_UNSPECIFIED, NULL);
1039             css_conditional_io_interrupt(sch);
1040         }
1041     } else {
1042         if (!dev->indicators2) {
1043             return;
1044         }
1045         vector = 0;
1046         indicators = address_space_ldq(&address_space_memory,
1047                                        dev->indicators2->addr,
1048                                        MEMTXATTRS_UNSPECIFIED,
1049                                        NULL);
1050         indicators |= 1ULL << vector;
1051         address_space_stq(&address_space_memory, dev->indicators2->addr,
1052                           indicators, MEMTXATTRS_UNSPECIFIED, NULL);
1053         css_conditional_io_interrupt(sch);
1054     }
1055 }
1056
1057 static void virtio_ccw_reset(DeviceState *d)
1058 {
1059     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1060     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1061     CcwDevice *ccw_dev = CCW_DEVICE(d);
1062
1063     virtio_ccw_reset_virtio(dev, vdev);
1064     css_reset_sch(ccw_dev->sch);
1065 }
1066
1067 static void virtio_ccw_vmstate_change(DeviceState *d, bool running)
1068 {
1069     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1070
1071     if (running) {
1072         virtio_ccw_start_ioeventfd(dev);
1073     } else {
1074         virtio_ccw_stop_ioeventfd(dev);
1075     }
1076 }
1077
1078 static bool virtio_ccw_query_guest_notifiers(DeviceState *d)
1079 {
1080     CcwDevice *dev = CCW_DEVICE(d);
1081
1082     return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA);
1083 }
1084
1085 static int virtio_ccw_get_mappings(VirtioCcwDevice *dev)
1086 {
1087     int r;
1088     CcwDevice *ccw_dev = CCW_DEVICE(dev);
1089
1090     if (!ccw_dev->sch->thinint_active) {
1091         return -EINVAL;
1092     }
1093
1094     r = map_indicator(&dev->routes.adapter, dev->summary_indicator);
1095     if (r) {
1096         return r;
1097     }
1098     r = map_indicator(&dev->routes.adapter, dev->indicators);
1099     if (r) {
1100         return r;
1101     }
1102     dev->routes.adapter.summary_addr = dev->summary_indicator->map;
1103     dev->routes.adapter.ind_addr = dev->indicators->map;
1104
1105     return 0;
1106 }
1107
1108 static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs)
1109 {
1110     int i;
1111     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1112     int ret;
1113     S390FLICState *fs = s390_get_flic();
1114     S390FLICStateClass *fsc = s390_get_flic_class(fs);
1115
1116     ret = virtio_ccw_get_mappings(dev);
1117     if (ret) {
1118         return ret;
1119     }
1120     for (i = 0; i < nvqs; i++) {
1121         if (!virtio_queue_get_num(vdev, i)) {
1122             break;
1123         }
1124     }
1125     dev->routes.num_routes = i;
1126     return fsc->add_adapter_routes(fs, &dev->routes);
1127 }
1128
1129 static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs)
1130 {
1131     S390FLICState *fs = s390_get_flic();
1132     S390FLICStateClass *fsc = s390_get_flic_class(fs);
1133
1134     fsc->release_adapter_routes(fs, &dev->routes);
1135 }
1136
1137 static int virtio_ccw_add_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
1143     return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL,
1144                                               dev->routes.gsi[n]);
1145 }
1146
1147 static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n)
1148 {
1149     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1150     VirtQueue *vq = virtio_get_queue(vdev, n);
1151     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1152     int ret;
1153
1154     ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier,
1155                                                 dev->routes.gsi[n]);
1156     assert(ret == 0);
1157 }
1158
1159 static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n,
1160                                          bool assign, bool with_irqfd)
1161 {
1162     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1163     VirtQueue *vq = virtio_get_queue(vdev, n);
1164     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1165     VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
1166
1167     if (assign) {
1168         int r = event_notifier_init(notifier, 0);
1169
1170         if (r < 0) {
1171             return r;
1172         }
1173         virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
1174         if (with_irqfd) {
1175             r = virtio_ccw_add_irqfd(dev, n);
1176             if (r) {
1177                 virtio_queue_set_guest_notifier_fd_handler(vq, false,
1178                                                            with_irqfd);
1179                 return r;
1180             }
1181         }
1182         /*
1183          * We do not support individual masking for channel devices, so we
1184          * need to manually trigger any guest masking callbacks here.
1185          */
1186         if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) {
1187             k->guest_notifier_mask(vdev, n, false);
1188         }
1189         /* get lost events and re-inject */
1190         if (k->guest_notifier_pending &&
1191             k->guest_notifier_pending(vdev, n)) {
1192             event_notifier_set(notifier);
1193         }
1194     } else {
1195         if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) {
1196             k->guest_notifier_mask(vdev, n, true);
1197         }
1198         if (with_irqfd) {
1199             virtio_ccw_remove_irqfd(dev, n);
1200         }
1201         virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
1202         event_notifier_cleanup(notifier);
1203     }
1204     return 0;
1205 }
1206
1207 static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs,
1208                                           bool assigned)
1209 {
1210     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1211     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1212     CcwDevice *ccw_dev = CCW_DEVICE(d);
1213     bool with_irqfd = ccw_dev->sch->thinint_active && kvm_irqfds_enabled();
1214     int r, n;
1215
1216     if (with_irqfd && assigned) {
1217         /* irq routes need to be set up before assigning irqfds */
1218         r = virtio_ccw_setup_irqroutes(dev, nvqs);
1219         if (r < 0) {
1220             goto irqroute_error;
1221         }
1222     }
1223     for (n = 0; n < nvqs; n++) {
1224         if (!virtio_queue_get_num(vdev, n)) {
1225             break;
1226         }
1227         r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd);
1228         if (r < 0) {
1229             goto assign_error;
1230         }
1231     }
1232     if (with_irqfd && !assigned) {
1233         /* release irq routes after irqfds have been released */
1234         virtio_ccw_release_irqroutes(dev, nvqs);
1235     }
1236     return 0;
1237
1238 assign_error:
1239     while (--n >= 0) {
1240         virtio_ccw_set_guest_notifier(dev, n, !assigned, false);
1241     }
1242 irqroute_error:
1243     if (with_irqfd && assigned) {
1244         virtio_ccw_release_irqroutes(dev, nvqs);
1245     }
1246     return r;
1247 }
1248
1249 static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f)
1250 {
1251     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1252     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1253
1254     qemu_put_be16(f, virtio_queue_vector(vdev, n));
1255 }
1256
1257 static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f)
1258 {
1259     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1260     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1261     uint16_t vector;
1262
1263     qemu_get_be16s(f, &vector);
1264     virtio_queue_set_vector(vdev, n , vector);
1265
1266     return 0;
1267 }
1268
1269 static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
1270 {
1271     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1272     vmstate_save_state(f, &vmstate_virtio_ccw_dev, dev, NULL);
1273 }
1274
1275 static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
1276 {
1277     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1278     return vmstate_load_state(f, &vmstate_virtio_ccw_dev, dev, 1);
1279 }
1280
1281 static void virtio_ccw_pre_plugged(DeviceState *d, Error **errp)
1282 {
1283    VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1284    VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1285
1286     if (dev->max_rev >= 1) {
1287         virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
1288     }
1289 }
1290
1291 /* This is called by virtio-bus just after the device is plugged. */
1292 static void virtio_ccw_device_plugged(DeviceState *d, Error **errp)
1293 {
1294     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1295     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1296     CcwDevice *ccw_dev = CCW_DEVICE(d);
1297     SubchDev *sch = ccw_dev->sch;
1298     int n = virtio_get_num_queues(vdev);
1299     S390FLICState *flic = s390_get_flic();
1300
1301     if (!virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
1302         dev->max_rev = 0;
1303     }
1304
1305     if (virtio_get_num_queues(vdev) > VIRTIO_QUEUE_MAX) {
1306         error_setg(errp, "The number of virtqueues %d "
1307                    "exceeds virtio limit %d", n,
1308                    VIRTIO_QUEUE_MAX);
1309         return;
1310     }
1311     if (virtio_get_num_queues(vdev) > flic->adapter_routes_max_batch) {
1312         error_setg(errp, "The number of virtqueues %d "
1313                    "exceeds flic adapter route limit %d", n,
1314                    flic->adapter_routes_max_batch);
1315         return;
1316     }
1317
1318     sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus);
1319
1320
1321     css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid,
1322                           d->hotplugged, 1);
1323 }
1324
1325 static void virtio_ccw_device_unplugged(DeviceState *d)
1326 {
1327     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1328
1329     virtio_ccw_stop_ioeventfd(dev);
1330 }
1331 /**************** Virtio-ccw Bus Device Descriptions *******************/
1332
1333 static Property virtio_ccw_net_properties[] = {
1334     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1335                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1336     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1337                        VIRTIO_CCW_MAX_REV),
1338     DEFINE_PROP_END_OF_LIST(),
1339 };
1340
1341 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data)
1342 {
1343     DeviceClass *dc = DEVICE_CLASS(klass);
1344     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1345
1346     k->realize = virtio_ccw_net_realize;
1347     k->exit = virtio_ccw_exit;
1348     dc->reset = virtio_ccw_reset;
1349     dc->props = virtio_ccw_net_properties;
1350     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
1351 }
1352
1353 static const TypeInfo virtio_ccw_net = {
1354     .name          = TYPE_VIRTIO_NET_CCW,
1355     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1356     .instance_size = sizeof(VirtIONetCcw),
1357     .instance_init = virtio_ccw_net_instance_init,
1358     .class_init    = virtio_ccw_net_class_init,
1359 };
1360
1361 static Property virtio_ccw_blk_properties[] = {
1362     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1363                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1364     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1365                        VIRTIO_CCW_MAX_REV),
1366     DEFINE_PROP_END_OF_LIST(),
1367 };
1368
1369 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
1370 {
1371     DeviceClass *dc = DEVICE_CLASS(klass);
1372     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1373
1374     k->realize = virtio_ccw_blk_realize;
1375     k->exit = virtio_ccw_exit;
1376     dc->reset = virtio_ccw_reset;
1377     dc->props = virtio_ccw_blk_properties;
1378     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1379 }
1380
1381 static const TypeInfo virtio_ccw_blk = {
1382     .name          = TYPE_VIRTIO_BLK_CCW,
1383     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1384     .instance_size = sizeof(VirtIOBlkCcw),
1385     .instance_init = virtio_ccw_blk_instance_init,
1386     .class_init    = virtio_ccw_blk_class_init,
1387 };
1388
1389 static Property virtio_ccw_serial_properties[] = {
1390     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1391                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1392     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1393                        VIRTIO_CCW_MAX_REV),
1394     DEFINE_PROP_END_OF_LIST(),
1395 };
1396
1397 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
1398 {
1399     DeviceClass *dc = DEVICE_CLASS(klass);
1400     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1401
1402     k->realize = virtio_ccw_serial_realize;
1403     k->exit = virtio_ccw_exit;
1404     dc->reset = virtio_ccw_reset;
1405     dc->props = virtio_ccw_serial_properties;
1406     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
1407 }
1408
1409 static const TypeInfo virtio_ccw_serial = {
1410     .name          = TYPE_VIRTIO_SERIAL_CCW,
1411     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1412     .instance_size = sizeof(VirtioSerialCcw),
1413     .instance_init = virtio_ccw_serial_instance_init,
1414     .class_init    = virtio_ccw_serial_class_init,
1415 };
1416
1417 static Property virtio_ccw_balloon_properties[] = {
1418     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1419                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1420     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1421                        VIRTIO_CCW_MAX_REV),
1422     DEFINE_PROP_END_OF_LIST(),
1423 };
1424
1425 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
1426 {
1427     DeviceClass *dc = DEVICE_CLASS(klass);
1428     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1429
1430     k->realize = virtio_ccw_balloon_realize;
1431     k->exit = virtio_ccw_exit;
1432     dc->reset = virtio_ccw_reset;
1433     dc->props = virtio_ccw_balloon_properties;
1434     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1435 }
1436
1437 static const TypeInfo virtio_ccw_balloon = {
1438     .name          = TYPE_VIRTIO_BALLOON_CCW,
1439     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1440     .instance_size = sizeof(VirtIOBalloonCcw),
1441     .instance_init = virtio_ccw_balloon_instance_init,
1442     .class_init    = virtio_ccw_balloon_class_init,
1443 };
1444
1445 static Property virtio_ccw_scsi_properties[] = {
1446     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1447                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1448     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1449                        VIRTIO_CCW_MAX_REV),
1450     DEFINE_PROP_END_OF_LIST(),
1451 };
1452
1453 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
1454 {
1455     DeviceClass *dc = DEVICE_CLASS(klass);
1456     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1457
1458     k->realize = virtio_ccw_scsi_realize;
1459     k->exit = virtio_ccw_exit;
1460     dc->reset = virtio_ccw_reset;
1461     dc->props = virtio_ccw_scsi_properties;
1462     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1463 }
1464
1465 static const TypeInfo virtio_ccw_scsi = {
1466     .name          = TYPE_VIRTIO_SCSI_CCW,
1467     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1468     .instance_size = sizeof(VirtIOSCSICcw),
1469     .instance_init = virtio_ccw_scsi_instance_init,
1470     .class_init    = virtio_ccw_scsi_class_init,
1471 };
1472
1473 #ifdef CONFIG_VHOST_SCSI
1474 static Property vhost_ccw_scsi_properties[] = {
1475     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1476                        VIRTIO_CCW_MAX_REV),
1477     DEFINE_PROP_END_OF_LIST(),
1478 };
1479
1480 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data)
1481 {
1482     DeviceClass *dc = DEVICE_CLASS(klass);
1483     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1484
1485     k->realize = vhost_ccw_scsi_realize;
1486     k->exit = virtio_ccw_exit;
1487     dc->reset = virtio_ccw_reset;
1488     dc->props = vhost_ccw_scsi_properties;
1489     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1490 }
1491
1492 static const TypeInfo vhost_ccw_scsi = {
1493     .name          = TYPE_VHOST_SCSI_CCW,
1494     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1495     .instance_size = sizeof(VHostSCSICcw),
1496     .instance_init = vhost_ccw_scsi_instance_init,
1497     .class_init    = vhost_ccw_scsi_class_init,
1498 };
1499 #endif
1500
1501 static void virtio_ccw_rng_instance_init(Object *obj)
1502 {
1503     VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
1504
1505     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1506                                 TYPE_VIRTIO_RNG);
1507 }
1508
1509 static Property virtio_ccw_rng_properties[] = {
1510     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1511                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1512     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1513                        VIRTIO_CCW_MAX_REV),
1514     DEFINE_PROP_END_OF_LIST(),
1515 };
1516
1517 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
1518 {
1519     DeviceClass *dc = DEVICE_CLASS(klass);
1520     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1521
1522     k->realize = virtio_ccw_rng_realize;
1523     k->exit = virtio_ccw_exit;
1524     dc->reset = virtio_ccw_reset;
1525     dc->props = virtio_ccw_rng_properties;
1526     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1527 }
1528
1529 static const TypeInfo virtio_ccw_rng = {
1530     .name          = TYPE_VIRTIO_RNG_CCW,
1531     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1532     .instance_size = sizeof(VirtIORNGCcw),
1533     .instance_init = virtio_ccw_rng_instance_init,
1534     .class_init    = virtio_ccw_rng_class_init,
1535 };
1536
1537 static Property virtio_ccw_crypto_properties[] = {
1538     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1539                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1540     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1541                        VIRTIO_CCW_MAX_REV),
1542     DEFINE_PROP_END_OF_LIST(),
1543 };
1544
1545 static void virtio_ccw_crypto_instance_init(Object *obj)
1546 {
1547     VirtIOCryptoCcw *dev = VIRTIO_CRYPTO_CCW(obj);
1548     VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
1549
1550     ccw_dev->force_revision_1 = true;
1551     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1552                                 TYPE_VIRTIO_CRYPTO);
1553 }
1554
1555 static void virtio_ccw_crypto_class_init(ObjectClass *klass, void *data)
1556 {
1557     DeviceClass *dc = DEVICE_CLASS(klass);
1558     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1559
1560     k->realize = virtio_ccw_crypto_realize;
1561     k->exit = virtio_ccw_exit;
1562     dc->reset = virtio_ccw_reset;
1563     dc->props = virtio_ccw_crypto_properties;
1564     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1565 }
1566
1567 static const TypeInfo virtio_ccw_crypto = {
1568     .name          = TYPE_VIRTIO_CRYPTO_CCW,
1569     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1570     .instance_size = sizeof(VirtIOCryptoCcw),
1571     .instance_init = virtio_ccw_crypto_instance_init,
1572     .class_init    = virtio_ccw_crypto_class_init,
1573 };
1574
1575 static Property virtio_ccw_gpu_properties[] = {
1576     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1577                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1578     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1579                        VIRTIO_CCW_MAX_REV),
1580     DEFINE_PROP_END_OF_LIST(),
1581 };
1582
1583 static void virtio_ccw_gpu_instance_init(Object *obj)
1584 {
1585     VirtIOGPUCcw *dev = VIRTIO_GPU_CCW(obj);
1586     VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
1587
1588     ccw_dev->force_revision_1 = true;
1589     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1590                                 TYPE_VIRTIO_GPU);
1591 }
1592
1593 static void virtio_ccw_gpu_class_init(ObjectClass *klass, void *data)
1594 {
1595     DeviceClass *dc = DEVICE_CLASS(klass);
1596     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1597
1598     k->realize = virtio_ccw_gpu_realize;
1599     k->exit = virtio_ccw_exit;
1600     dc->reset = virtio_ccw_reset;
1601     dc->props = virtio_ccw_gpu_properties;
1602     dc->hotpluggable = false;
1603     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
1604 }
1605
1606 static const TypeInfo virtio_ccw_gpu = {
1607     .name          = TYPE_VIRTIO_GPU_CCW,
1608     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1609     .instance_size = sizeof(VirtIOGPUCcw),
1610     .instance_init = virtio_ccw_gpu_instance_init,
1611     .class_init    = virtio_ccw_gpu_class_init,
1612 };
1613
1614 static Property virtio_ccw_input_properties[] = {
1615     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1616                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1617     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1618                        VIRTIO_CCW_MAX_REV),
1619     DEFINE_PROP_END_OF_LIST(),
1620 };
1621
1622 static void virtio_ccw_input_class_init(ObjectClass *klass, void *data)
1623 {
1624     DeviceClass *dc = DEVICE_CLASS(klass);
1625     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1626
1627     k->realize = virtio_ccw_input_realize;
1628     k->exit = virtio_ccw_exit;
1629     dc->reset = virtio_ccw_reset;
1630     dc->props = virtio_ccw_input_properties;
1631     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
1632 }
1633
1634 static void virtio_ccw_keyboard_instance_init(Object *obj)
1635 {
1636     VirtIOInputHIDCcw *dev = VIRTIO_INPUT_HID_CCW(obj);
1637     VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
1638
1639     ccw_dev->force_revision_1 = true;
1640     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1641                                 TYPE_VIRTIO_KEYBOARD);
1642 }
1643
1644 static void virtio_ccw_mouse_instance_init(Object *obj)
1645 {
1646     VirtIOInputHIDCcw *dev = VIRTIO_INPUT_HID_CCW(obj);
1647     VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
1648
1649     ccw_dev->force_revision_1 = true;
1650     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1651                                 TYPE_VIRTIO_MOUSE);
1652 }
1653
1654 static void virtio_ccw_tablet_instance_init(Object *obj)
1655 {
1656     VirtIOInputHIDCcw *dev = VIRTIO_INPUT_HID_CCW(obj);
1657     VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
1658
1659     ccw_dev->force_revision_1 = true;
1660     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1661                                 TYPE_VIRTIO_TABLET);
1662 }
1663
1664 static const TypeInfo virtio_ccw_input = {
1665     .name          = TYPE_VIRTIO_INPUT_CCW,
1666     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1667     .instance_size = sizeof(VirtIOInputCcw),
1668     .class_init    = virtio_ccw_input_class_init,
1669     .abstract = true,
1670 };
1671
1672 static const TypeInfo virtio_ccw_input_hid = {
1673     .name          = TYPE_VIRTIO_INPUT_HID_CCW,
1674     .parent        = TYPE_VIRTIO_INPUT_CCW,
1675     .instance_size = sizeof(VirtIOInputHIDCcw),
1676     .abstract = true,
1677 };
1678
1679 static const TypeInfo virtio_ccw_keyboard = {
1680     .name          = TYPE_VIRTIO_KEYBOARD_CCW,
1681     .parent        = TYPE_VIRTIO_INPUT_HID_CCW,
1682     .instance_size = sizeof(VirtIOInputHIDCcw),
1683     .instance_init = virtio_ccw_keyboard_instance_init,
1684 };
1685
1686 static const TypeInfo virtio_ccw_mouse = {
1687     .name          = TYPE_VIRTIO_MOUSE_CCW,
1688     .parent        = TYPE_VIRTIO_INPUT_HID_CCW,
1689     .instance_size = sizeof(VirtIOInputHIDCcw),
1690     .instance_init = virtio_ccw_mouse_instance_init,
1691 };
1692
1693 static const TypeInfo virtio_ccw_tablet = {
1694     .name          = TYPE_VIRTIO_TABLET_CCW,
1695     .parent        = TYPE_VIRTIO_INPUT_HID_CCW,
1696     .instance_size = sizeof(VirtIOInputHIDCcw),
1697     .instance_init = virtio_ccw_tablet_instance_init,
1698 };
1699
1700 static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp)
1701 {
1702     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
1703
1704     virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
1705     virtio_ccw_device_realize(_dev, errp);
1706 }
1707
1708 static int virtio_ccw_busdev_exit(DeviceState *dev)
1709 {
1710     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
1711     VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
1712
1713     return _info->exit(_dev);
1714 }
1715
1716 static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev,
1717                                      DeviceState *dev, Error **errp)
1718 {
1719     VirtioCcwDevice *_dev = to_virtio_ccw_dev_fast(dev);
1720
1721     virtio_ccw_stop_ioeventfd(_dev);
1722 }
1723
1724 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data)
1725 {
1726     DeviceClass *dc = DEVICE_CLASS(klass);
1727     CCWDeviceClass *k = CCW_DEVICE_CLASS(dc);
1728
1729     k->unplug = virtio_ccw_busdev_unplug;
1730     dc->realize = virtio_ccw_busdev_realize;
1731     dc->exit = virtio_ccw_busdev_exit;
1732     dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
1733 }
1734
1735 static const TypeInfo virtio_ccw_device_info = {
1736     .name = TYPE_VIRTIO_CCW_DEVICE,
1737     .parent = TYPE_CCW_DEVICE,
1738     .instance_size = sizeof(VirtioCcwDevice),
1739     .class_init = virtio_ccw_device_class_init,
1740     .class_size = sizeof(VirtIOCCWDeviceClass),
1741     .abstract = true,
1742 };
1743
1744 /* virtio-ccw-bus */
1745
1746 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
1747                                VirtioCcwDevice *dev)
1748 {
1749     DeviceState *qdev = DEVICE(dev);
1750     char virtio_bus_name[] = "virtio-bus";
1751
1752     qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS,
1753                         qdev, virtio_bus_name);
1754 }
1755
1756 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
1757 {
1758     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
1759     BusClass *bus_class = BUS_CLASS(klass);
1760
1761     bus_class->max_dev = 1;
1762     k->notify = virtio_ccw_notify;
1763     k->vmstate_change = virtio_ccw_vmstate_change;
1764     k->query_guest_notifiers = virtio_ccw_query_guest_notifiers;
1765     k->set_guest_notifiers = virtio_ccw_set_guest_notifiers;
1766     k->save_queue = virtio_ccw_save_queue;
1767     k->load_queue = virtio_ccw_load_queue;
1768     k->save_config = virtio_ccw_save_config;
1769     k->load_config = virtio_ccw_load_config;
1770     k->pre_plugged = virtio_ccw_pre_plugged;
1771     k->device_plugged = virtio_ccw_device_plugged;
1772     k->device_unplugged = virtio_ccw_device_unplugged;
1773     k->ioeventfd_enabled = virtio_ccw_ioeventfd_enabled;
1774     k->ioeventfd_assign = virtio_ccw_ioeventfd_assign;
1775 }
1776
1777 static const TypeInfo virtio_ccw_bus_info = {
1778     .name = TYPE_VIRTIO_CCW_BUS,
1779     .parent = TYPE_VIRTIO_BUS,
1780     .instance_size = sizeof(VirtioCcwBusState),
1781     .class_init = virtio_ccw_bus_class_init,
1782 };
1783
1784 #ifdef CONFIG_VIRTFS
1785 static Property virtio_ccw_9p_properties[] = {
1786     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1787             VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1788     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1789                        VIRTIO_CCW_MAX_REV),
1790     DEFINE_PROP_END_OF_LIST(),
1791 };
1792
1793 static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp)
1794 {
1795     V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev);
1796     DeviceState *vdev = DEVICE(&dev->vdev);
1797
1798     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
1799     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1800 }
1801
1802 static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data)
1803 {
1804     DeviceClass *dc = DEVICE_CLASS(klass);
1805     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1806
1807     k->exit = virtio_ccw_exit;
1808     k->realize = virtio_ccw_9p_realize;
1809     dc->reset = virtio_ccw_reset;
1810     dc->props = virtio_ccw_9p_properties;
1811     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1812 }
1813
1814 static void virtio_ccw_9p_instance_init(Object *obj)
1815 {
1816     V9fsCCWState *dev = VIRTIO_9P_CCW(obj);
1817
1818     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1819                                 TYPE_VIRTIO_9P);
1820 }
1821
1822 static const TypeInfo virtio_ccw_9p_info = {
1823     .name          = TYPE_VIRTIO_9P_CCW,
1824     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1825     .instance_size = sizeof(V9fsCCWState),
1826     .instance_init = virtio_ccw_9p_instance_init,
1827     .class_init    = virtio_ccw_9p_class_init,
1828 };
1829 #endif
1830
1831 #ifdef CONFIG_VHOST_VSOCK
1832
1833 static Property vhost_vsock_ccw_properties[] = {
1834     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1835                        VIRTIO_CCW_MAX_REV),
1836     DEFINE_PROP_END_OF_LIST(),
1837 };
1838
1839 static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp)
1840 {
1841     VHostVSockCCWState *dev = VHOST_VSOCK_CCW(ccw_dev);
1842     DeviceState *vdev = DEVICE(&dev->vdev);
1843     Error *err = NULL;
1844
1845     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
1846     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
1847     error_propagate(errp, err);
1848 }
1849
1850 static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)
1851 {
1852     DeviceClass *dc = DEVICE_CLASS(klass);
1853     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1854
1855     k->realize = vhost_vsock_ccw_realize;
1856     k->exit = virtio_ccw_exit;
1857     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1858     dc->props = vhost_vsock_ccw_properties;
1859     dc->reset = virtio_ccw_reset;
1860 }
1861
1862 static void vhost_vsock_ccw_instance_init(Object *obj)
1863 {
1864     VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj);
1865
1866     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1867                                 TYPE_VHOST_VSOCK);
1868 }
1869
1870 static const TypeInfo vhost_vsock_ccw_info = {
1871     .name          = TYPE_VHOST_VSOCK_CCW,
1872     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1873     .instance_size = sizeof(VHostVSockCCWState),
1874     .instance_init = vhost_vsock_ccw_instance_init,
1875     .class_init    = vhost_vsock_ccw_class_init,
1876 };
1877 #endif
1878
1879 static void virtio_ccw_register(void)
1880 {
1881     type_register_static(&virtio_ccw_bus_info);
1882     type_register_static(&virtio_ccw_device_info);
1883     type_register_static(&virtio_ccw_serial);
1884     type_register_static(&virtio_ccw_blk);
1885     type_register_static(&virtio_ccw_net);
1886     type_register_static(&virtio_ccw_balloon);
1887     type_register_static(&virtio_ccw_scsi);
1888 #ifdef CONFIG_VHOST_SCSI
1889     type_register_static(&vhost_ccw_scsi);
1890 #endif
1891     type_register_static(&virtio_ccw_rng);
1892 #ifdef CONFIG_VIRTFS
1893     type_register_static(&virtio_ccw_9p_info);
1894 #endif
1895 #ifdef CONFIG_VHOST_VSOCK
1896     type_register_static(&vhost_vsock_ccw_info);
1897 #endif
1898     type_register_static(&virtio_ccw_crypto);
1899     type_register_static(&virtio_ccw_gpu);
1900     type_register_static(&virtio_ccw_input);
1901     type_register_static(&virtio_ccw_input_hid);
1902     type_register_static(&virtio_ccw_keyboard);
1903     type_register_static(&virtio_ccw_mouse);
1904     type_register_static(&virtio_ccw_tablet);
1905 }
1906
1907 type_init(virtio_ccw_register)