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 void 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
  74 static int virtio_ccw_dev_tmp_post_load(void *opaque, int version_id)
  75 {
  76     VirtioCcwDeviceTmp *tmp = opaque;
  77     VirtioCcwDevice *dev = tmp->parent;
  78     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
  79
  80     vdev->config_vector = tmp->config_vector;
  81     return 0;
  82 }
  83
  84 const VMStateDescription vmstate_virtio_ccw_dev_tmp = {
  85     .name = "s390_virtio_ccw_dev_tmp",
  86     .pre_save = virtio_ccw_dev_tmp_pre_save,
  87     .post_load = virtio_ccw_dev_tmp_post_load,
  88     .fields = (VMStateField[]) {
  89         VMSTATE_UINT16(config_vector, VirtioCcwDeviceTmp),
  90         VMSTATE_END_OF_LIST()
  91     }
  92 };
  93
  94 const VMStateDescription vmstate_virtio_ccw_dev = {
  95     .name = "s390_virtio_ccw_dev",
  96     .version_id = 1,
  97     .minimum_version_id = 1,
  98     .post_load = virtio_ccw_dev_post_load,
  99     .fields = (VMStateField[]) {
 100         VMSTATE_CCW_DEVICE(parent_obj, VirtioCcwDevice),
 101         VMSTATE_PTR_TO_IND_ADDR(indicators, VirtioCcwDevice),
 102         VMSTATE_PTR_TO_IND_ADDR(indicators2, VirtioCcwDevice),
 103         VMSTATE_PTR_TO_IND_ADDR(summary_indicator, VirtioCcwDevice),
 104         /*
 105          * Ugly hack because VirtIODevice does not migrate itself.
 106          * This also makes legacy via vmstate_save_state possible.
 107          */
 108         VMSTATE_WITH_TMP(VirtioCcwDevice, VirtioCcwDeviceTmp,
 109                          vmstate_virtio_ccw_dev_tmp),
 110         VMSTATE_STRUCT(routes, VirtioCcwDevice, 1, vmstate_adapter_routes,
 111                        AdapterRoutes),
 112         VMSTATE_UINT8(thinint_isc, VirtioCcwDevice),
 113         VMSTATE_INT32(revision, VirtioCcwDevice),
 114         VMSTATE_END_OF_LIST()
 115     }
 116 };
 117
 118 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
 119                                VirtioCcwDevice *dev);
 120
 121 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch)
 122 {
 123     VirtIODevice *vdev = NULL;
 124     VirtioCcwDevice *dev = sch->driver_data;
 125
 126     if (dev) {
 127         vdev = virtio_bus_get_device(&dev->bus);
 128     }
 129     return vdev;
 130 }
 131
 132 static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev)
 133 {
 134     virtio_bus_start_ioeventfd(&dev->bus);
 135 }
 136
 137 static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev)
 138 {
 139     virtio_bus_stop_ioeventfd(&dev->bus);
 140 }
 141
 142 static bool virtio_ccw_ioeventfd_enabled(DeviceState *d)
 143 {
 144     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
 145
 146     return (dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) != 0;
 147 }
 148
 149 static int virtio_ccw_ioeventfd_assign(DeviceState *d, EventNotifier *notifier,
 150                                        int n, bool assign)
 151 {
 152     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
 153     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 154     SubchDev *sch = ccw_dev->sch;
 155     uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid;
 156
 157     return s390_assign_subch_ioeventfd(notifier, sch_id, n, assign);
 158 }
 159
 160 /* Communication blocks used by several channel commands. */
 161 typedef struct VqInfoBlockLegacy {
 162     uint64_t queue;
 163     uint32_t align;
 164     uint16_t index;
 165     uint16_t num;
 166 } QEMU_PACKED VqInfoBlockLegacy;
 167
 168 typedef struct VqInfoBlock {
 169     uint64_t desc;
 170     uint32_t res0;
 171     uint16_t index;
 172     uint16_t num;
 173     uint64_t avail;
 174     uint64_t used;
 175 } QEMU_PACKED VqInfoBlock;
 176
 177 typedef struct VqConfigBlock {
 178     uint16_t index;
 179     uint16_t num_max;
 180 } QEMU_PACKED VqConfigBlock;
 181
 182 typedef struct VirtioFeatDesc {
 183     uint32_t features;
 184     uint8_t index;
 185 } QEMU_PACKED VirtioFeatDesc;
 186
 187 typedef struct VirtioThinintInfo {
 188     hwaddr summary_indicator;
 189     hwaddr device_indicator;
 190     uint64_t ind_bit;
 191     uint8_t isc;
 192 } QEMU_PACKED VirtioThinintInfo;
 193
 194 typedef struct VirtioRevInfo {
 195     uint16_t revision;
 196     uint16_t length;
 197     uint8_t data[0];
 198 } QEMU_PACKED VirtioRevInfo;
 199
 200 /* Specify where the virtqueues for the subchannel are in guest memory. */
 201 static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info,
 202                               VqInfoBlockLegacy *linfo)
 203 {
 204     VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
 205     uint16_t index = info ? info->index : linfo->index;
 206     uint16_t num = info ? info->num : linfo->num;
 207     uint64_t desc = info ? info->desc : linfo->queue;
 208
 209     if (index >= VIRTIO_QUEUE_MAX) {
 210         return -EINVAL;
 211     }
 212
 213     /* Current code in virtio.c relies on 4K alignment. */
 214     if (linfo && desc && (linfo->align != 4096)) {
 215         return -EINVAL;
 216     }
 217
 218     if (!vdev) {
 219         return -EINVAL;
 220     }
 221
 222     if (info) {
 223         virtio_queue_set_rings(vdev, index, desc, info->avail, info->used);
 224     } else {
 225         virtio_queue_set_addr(vdev, index, desc);
 226     }
 227     if (!desc) {
 228         virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR);
 229     } else {
 230         if (info) {
 231             /* virtio-1 allows changing the ring size. */
 232             if (virtio_queue_get_max_num(vdev, index) < num) {
 233                 /* Fail if we exceed the maximum number. */
 234                 return -EINVAL;
 235             }
 236             virtio_queue_set_num(vdev, index, num);
 237         } else if (virtio_queue_get_num(vdev, index) > num) {
 238             /* Fail if we don't have a big enough queue. */
 239             return -EINVAL;
 240         }
 241         /* We ignore possible increased num for legacy for compatibility. */
 242         virtio_queue_set_vector(vdev, index, index);
 243     }
 244     /* tell notify handler in case of config change */
 245     vdev->config_vector = VIRTIO_QUEUE_MAX;
 246     return 0;
 247 }
 248
 249 static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev)
 250 {
 251     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 252
 253     virtio_ccw_stop_ioeventfd(dev);
 254     virtio_reset(vdev);
 255     if (dev->indicators) {
 256         release_indicator(&dev->routes.adapter, dev->indicators);
 257         dev->indicators = NULL;
 258     }
 259     if (dev->indicators2) {
 260         release_indicator(&dev->routes.adapter, dev->indicators2);
 261         dev->indicators2 = NULL;
 262     }
 263     if (dev->summary_indicator) {
 264         release_indicator(&dev->routes.adapter, dev->summary_indicator);
 265         dev->summary_indicator = NULL;
 266     }
 267     ccw_dev->sch->thinint_active = false;
 268 }
 269
 270 static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len,
 271                                     bool is_legacy)
 272 {
 273     int ret;
 274     VqInfoBlock info;
 275     VqInfoBlockLegacy linfo;
 276     size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info);
 277
 278     if (check_len) {
 279         if (ccw.count != info_len) {
 280             return -EINVAL;
 281         }
 282     } else if (ccw.count < info_len) {
 283         /* Can't execute command. */
 284         return -EINVAL;
 285     }
 286     if (!ccw.cda) {
 287         return -EFAULT;
 288     }
 289     if (is_legacy) {
 290         linfo.queue = address_space_ldq_be(&address_space_memory, ccw.cda,
 291                                            MEMTXATTRS_UNSPECIFIED, NULL);
 292         linfo.align = address_space_ldl_be(&address_space_memory,
 293                                            ccw.cda + sizeof(linfo.queue),
 294                                            MEMTXATTRS_UNSPECIFIED,
 295                                            NULL);
 296         linfo.index = address_space_lduw_be(&address_space_memory,
 297                                             ccw.cda + sizeof(linfo.queue)
 298                                             + sizeof(linfo.align),
 299                                             MEMTXATTRS_UNSPECIFIED,
 300                                             NULL);
 301         linfo.num = address_space_lduw_be(&address_space_memory,
 302                                           ccw.cda + sizeof(linfo.queue)
 303                                           + sizeof(linfo.align)
 304                                           + sizeof(linfo.index),
 305                                           MEMTXATTRS_UNSPECIFIED,
 306                                           NULL);
 307         ret = virtio_ccw_set_vqs(sch, NULL, &linfo);
 308     } else {
 309         info.desc = address_space_ldq_be(&address_space_memory, ccw.cda,
 310                                            MEMTXATTRS_UNSPECIFIED, NULL);
 311         info.index = address_space_lduw_be(&address_space_memory,
 312                                            ccw.cda + sizeof(info.desc)
 313                                            + sizeof(info.res0),
 314                                            MEMTXATTRS_UNSPECIFIED, NULL);
 315         info.num = address_space_lduw_be(&address_space_memory,
 316                                          ccw.cda + sizeof(info.desc)
 317                                          + sizeof(info.res0)
 318                                          + sizeof(info.index),
 319                                          MEMTXATTRS_UNSPECIFIED, NULL);
 320         info.avail = address_space_ldq_be(&address_space_memory,
 321                                           ccw.cda + sizeof(info.desc)
 322                                           + sizeof(info.res0)
 323                                           + sizeof(info.index)
 324                                           + sizeof(info.num),
 325                                           MEMTXATTRS_UNSPECIFIED, NULL);
 326         info.used = address_space_ldq_be(&address_space_memory,
 327                                          ccw.cda + sizeof(info.desc)
 328                                          + sizeof(info.res0)
 329                                          + sizeof(info.index)
 330                                          + sizeof(info.num)
 331                                          + sizeof(info.avail),
 332                                          MEMTXATTRS_UNSPECIFIED, NULL);
 333         ret = virtio_ccw_set_vqs(sch, &info, NULL);
 334     }
 335     sch->curr_status.scsw.count = 0;
 336     return ret;
 337 }
 338
 339 static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
 340 {
 341     int ret;
 342     VirtioRevInfo revinfo;
 343     uint8_t status;
 344     VirtioFeatDesc features;
 345     void *config;
 346     hwaddr indicators;
 347     VqConfigBlock vq_config;
 348     VirtioCcwDevice *dev = sch->driver_data;
 349     VirtIODevice *vdev = virtio_ccw_get_vdev(sch);
 350     bool check_len;
 351     int len;
 352     hwaddr hw_len;
 353     VirtioThinintInfo *thinint;
 354
 355     if (!dev) {
 356         return -EINVAL;
 357     }
 358
 359     trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid,
 360                                    ccw.cmd_code);
 361     check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
 362
 363     if (dev->force_revision_1 && dev->revision < 0 &&
 364         ccw.cmd_code != CCW_CMD_SET_VIRTIO_REV) {
 365         /*
 366          * virtio-1 drivers must start with negotiating to a revision >= 1,
 367          * so post a command reject for all other commands
 368          */
 369         return -ENOSYS;
 370     }
 371
 372     /* Look at the command. */
 373     switch (ccw.cmd_code) {
 374     case CCW_CMD_SET_VQ:
 375         ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1);
 376         break;
 377     case CCW_CMD_VDEV_RESET:
 378         virtio_ccw_reset_virtio(dev, vdev);
 379         ret = 0;
 380         break;
 381     case CCW_CMD_READ_FEAT:
 382         if (check_len) {
 383             if (ccw.count != sizeof(features)) {
 384                 ret = -EINVAL;
 385                 break;
 386             }
 387         } else if (ccw.count < sizeof(features)) {
 388             /* Can't execute command. */
 389             ret = -EINVAL;
 390             break;
 391         }
 392         if (!ccw.cda) {
 393             ret = -EFAULT;
 394         } else {
 395             VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
 396
 397             features.index = address_space_ldub(&address_space_memory,
 398                                                 ccw.cda
 399                                                 + sizeof(features.features),
 400                                                 MEMTXATTRS_UNSPECIFIED,
 401                                                 NULL);
 402             if (features.index == 0) {
 403                 if (dev->revision >= 1) {
 404                     /* Don't offer legacy features for modern devices. */
 405                     features.features = (uint32_t)
 406                         (vdev->host_features & ~vdc->legacy_features);
 407                 } else {
 408                     features.features = (uint32_t)vdev->host_features;
 409                 }
 410             } else if ((features.index == 1) && (dev->revision >= 1)) {
 411                 /*
 412                  * Only offer feature bits beyond 31 if the guest has
 413                  * negotiated at least revision 1.
 414                  */
 415                 features.features = (uint32_t)(vdev->host_features >> 32);
 416             } else {
 417                 /* Return zeroes if the guest supports more feature bits. */
 418                 features.features = 0;
 419             }
 420             address_space_stl_le(&address_space_memory, ccw.cda,
 421                                  features.features, MEMTXATTRS_UNSPECIFIED,
 422                                  NULL);
 423             sch->curr_status.scsw.count = ccw.count - sizeof(features);
 424             ret = 0;
 425         }
 426         break;
 427     case CCW_CMD_WRITE_FEAT:
 428         if (check_len) {
 429             if (ccw.count != sizeof(features)) {
 430                 ret = -EINVAL;
 431                 break;
 432             }
 433         } else if (ccw.count < sizeof(features)) {
 434             /* Can't execute command. */
 435             ret = -EINVAL;
 436             break;
 437         }
 438         if (!ccw.cda) {
 439             ret = -EFAULT;
 440         } else {
 441             features.index = address_space_ldub(&address_space_memory,
 442                                                 ccw.cda
 443                                                 + sizeof(features.features),
 444                                                 MEMTXATTRS_UNSPECIFIED,
 445                                                 NULL);
 446             features.features = address_space_ldl_le(&address_space_memory,
 447                                                      ccw.cda,
 448                                                      MEMTXATTRS_UNSPECIFIED,
 449                                                      NULL);
 450             if (features.index == 0) {
 451                 virtio_set_features(vdev,
 452                                     (vdev->guest_features & 0xffffffff00000000ULL) |
 453                                     features.features);
 454             } else if ((features.index == 1) && (dev->revision >= 1)) {
 455                 /*
 456                  * If the guest did not negotiate at least revision 1,
 457                  * we did not offer it any feature bits beyond 31. Such a
 458                  * guest passing us any bit here is therefore buggy.
 459                  */
 460                 virtio_set_features(vdev,
 461                                     (vdev->guest_features & 0x00000000ffffffffULL) |
 462                                     ((uint64_t)features.features << 32));
 463             } else {
 464                 /*
 465                  * If the guest supports more feature bits, assert that it
 466                  * passes us zeroes for those we don't support.
 467                  */
 468                 if (features.features) {
 469                     fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n",
 470                             features.index, features.features);
 471                     /* XXX: do a unit check here? */
 472                 }
 473             }
 474             sch->curr_status.scsw.count = ccw.count - sizeof(features);
 475             ret = 0;
 476         }
 477         break;
 478     case CCW_CMD_READ_CONF:
 479         if (check_len) {
 480             if (ccw.count > vdev->config_len) {
 481                 ret = -EINVAL;
 482                 break;
 483             }
 484         }
 485         len = MIN(ccw.count, vdev->config_len);
 486         if (!ccw.cda) {
 487             ret = -EFAULT;
 488         } else {
 489             virtio_bus_get_vdev_config(&dev->bus, vdev->config);
 490             cpu_physical_memory_write(ccw.cda, vdev->config, len);
 491             sch->curr_status.scsw.count = ccw.count - len;
 492             ret = 0;
 493         }
 494         break;
 495     case CCW_CMD_WRITE_CONF:
 496         if (check_len) {
 497             if (ccw.count > vdev->config_len) {
 498                 ret = -EINVAL;
 499                 break;
 500             }
 501         }
 502         len = MIN(ccw.count, vdev->config_len);
 503         hw_len = len;
 504         if (!ccw.cda) {
 505             ret = -EFAULT;
 506         } else {
 507             config = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
 508             if (!config) {
 509                 ret = -EFAULT;
 510             } else {
 511                 len = hw_len;
 512                 memcpy(vdev->config, config, len);
 513                 cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
 514                 virtio_bus_set_vdev_config(&dev->bus, vdev->config);
 515                 sch->curr_status.scsw.count = ccw.count - len;
 516                 ret = 0;
 517             }
 518         }
 519         break;
 520     case CCW_CMD_READ_STATUS:
 521         if (check_len) {
 522             if (ccw.count != sizeof(status)) {
 523                 ret = -EINVAL;
 524                 break;
 525             }
 526         } else if (ccw.count < sizeof(status)) {
 527             /* Can't execute command. */
 528             ret = -EINVAL;
 529             break;
 530         }
 531         if (!ccw.cda) {
 532             ret = -EFAULT;
 533         } else {
 534             address_space_stb(&address_space_memory, ccw.cda, vdev->status,
 535                                         MEMTXATTRS_UNSPECIFIED, NULL);
 536             sch->curr_status.scsw.count = ccw.count - sizeof(vdev->status);;
 537             ret = 0;
 538         }
 539         break;
 540     case CCW_CMD_WRITE_STATUS:
 541         if (check_len) {
 542             if (ccw.count != sizeof(status)) {
 543                 ret = -EINVAL;
 544                 break;
 545             }
 546         } else if (ccw.count < sizeof(status)) {
 547             /* Can't execute command. */
 548             ret = -EINVAL;
 549             break;
 550         }
 551         if (!ccw.cda) {
 552             ret = -EFAULT;
 553         } else {
 554             status = address_space_ldub(&address_space_memory, ccw.cda,
 555                                         MEMTXATTRS_UNSPECIFIED, NULL);
 556             if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
 557                 virtio_ccw_stop_ioeventfd(dev);
 558             }
 559             if (virtio_set_status(vdev, status) == 0) {
 560                 if (vdev->status == 0) {
 561                     virtio_ccw_reset_virtio(dev, vdev);
 562                 }
 563                 if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
 564                     virtio_ccw_start_ioeventfd(dev);
 565                 }
 566                 sch->curr_status.scsw.count = ccw.count - sizeof(status);
 567                 ret = 0;
 568             } else {
 569                 /* Trigger a command reject. */
 570                 ret = -ENOSYS;
 571             }
 572         }
 573         break;
 574     case CCW_CMD_SET_IND:
 575         if (check_len) {
 576             if (ccw.count != sizeof(indicators)) {
 577                 ret = -EINVAL;
 578                 break;
 579             }
 580         } else if (ccw.count < sizeof(indicators)) {
 581             /* Can't execute command. */
 582             ret = -EINVAL;
 583             break;
 584         }
 585         if (sch->thinint_active) {
 586             /* Trigger a command reject. */
 587             ret = -ENOSYS;
 588             break;
 589         }
 590         if (virtio_get_num_queues(vdev) > NR_CLASSIC_INDICATOR_BITS) {
 591             /* More queues than indicator bits --> trigger a reject */
 592             ret = -ENOSYS;
 593             break;
 594         }
 595         if (!ccw.cda) {
 596             ret = -EFAULT;
 597         } else {
 598             indicators = address_space_ldq_be(&address_space_memory, ccw.cda,
 599                                               MEMTXATTRS_UNSPECIFIED, NULL);
 600             dev->indicators = get_indicator(indicators, sizeof(uint64_t));
 601             sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
 602             ret = 0;
 603         }
 604         break;
 605     case CCW_CMD_SET_CONF_IND:
 606         if (check_len) {
 607             if (ccw.count != sizeof(indicators)) {
 608                 ret = -EINVAL;
 609                 break;
 610             }
 611         } else if (ccw.count < sizeof(indicators)) {
 612             /* Can't execute command. */
 613             ret = -EINVAL;
 614             break;
 615         }
 616         if (!ccw.cda) {
 617             ret = -EFAULT;
 618         } else {
 619             indicators = address_space_ldq_be(&address_space_memory, ccw.cda,
 620                                               MEMTXATTRS_UNSPECIFIED, NULL);
 621             dev->indicators2 = get_indicator(indicators, sizeof(uint64_t));
 622             sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
 623             ret = 0;
 624         }
 625         break;
 626     case CCW_CMD_READ_VQ_CONF:
 627         if (check_len) {
 628             if (ccw.count != sizeof(vq_config)) {
 629                 ret = -EINVAL;
 630                 break;
 631             }
 632         } else if (ccw.count < sizeof(vq_config)) {
 633             /* Can't execute command. */
 634             ret = -EINVAL;
 635             break;
 636         }
 637         if (!ccw.cda) {
 638             ret = -EFAULT;
 639         } else {
 640             vq_config.index = address_space_lduw_be(&address_space_memory,
 641                                                     ccw.cda,
 642                                                     MEMTXATTRS_UNSPECIFIED,
 643                                                     NULL);
 644             if (vq_config.index >= VIRTIO_QUEUE_MAX) {
 645                 ret = -EINVAL;
 646                 break;
 647             }
 648             vq_config.num_max = virtio_queue_get_num(vdev,
 649                                                      vq_config.index);
 650             address_space_stw_be(&address_space_memory,
 651                                  ccw.cda + sizeof(vq_config.index),
 652                                  vq_config.num_max,
 653                                  MEMTXATTRS_UNSPECIFIED,
 654                                  NULL);
 655             sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
 656             ret = 0;
 657         }
 658         break;
 659     case CCW_CMD_SET_IND_ADAPTER:
 660         if (check_len) {
 661             if (ccw.count != sizeof(*thinint)) {
 662                 ret = -EINVAL;
 663                 break;
 664             }
 665         } else if (ccw.count < sizeof(*thinint)) {
 666             /* Can't execute command. */
 667             ret = -EINVAL;
 668             break;
 669         }
 670         len = sizeof(*thinint);
 671         hw_len = len;
 672         if (!ccw.cda) {
 673             ret = -EFAULT;
 674         } else if (dev->indicators && !sch->thinint_active) {
 675             /* Trigger a command reject. */
 676             ret = -ENOSYS;
 677         } else {
 678             thinint = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
 679             if (!thinint) {
 680                 ret = -EFAULT;
 681             } else {
 682                 uint64_t ind_bit = ldq_be_p(&thinint->ind_bit);
 683
 684                 len = hw_len;
 685                 dev->summary_indicator =
 686                     get_indicator(ldq_be_p(&thinint->summary_indicator),
 687                                   sizeof(uint8_t));
 688                 dev->indicators =
 689                     get_indicator(ldq_be_p(&thinint->device_indicator),
 690                                   ind_bit / 8 + 1);
 691                 dev->thinint_isc = thinint->isc;
 692                 dev->routes.adapter.ind_offset = ind_bit;
 693                 dev->routes.adapter.summary_offset = 7;
 694                 cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len);
 695                 dev->routes.adapter.adapter_id = css_get_adapter_id(
 696                                                  CSS_IO_ADAPTER_VIRTIO,
 697                                                  dev->thinint_isc);
 698                 sch->thinint_active = ((dev->indicators != NULL) &&
 699                                        (dev->summary_indicator != NULL));
 700                 sch->curr_status.scsw.count = ccw.count - len;
 701                 ret = 0;
 702             }
 703         }
 704         break;
 705     case CCW_CMD_SET_VIRTIO_REV:
 706         len = sizeof(revinfo);
 707         if (ccw.count < len) {
 708             ret = -EINVAL;
 709             break;
 710         }
 711         if (!ccw.cda) {
 712             ret = -EFAULT;
 713             break;
 714         }
 715         revinfo.revision =
 716             address_space_lduw_be(&address_space_memory, ccw.cda,
 717                                   MEMTXATTRS_UNSPECIFIED, NULL);
 718         revinfo.length =
 719             address_space_lduw_be(&address_space_memory,
 720                                   ccw.cda + sizeof(revinfo.revision),
 721                                   MEMTXATTRS_UNSPECIFIED, NULL);
 722         if (ccw.count < len + revinfo.length ||
 723             (check_len && ccw.count > len + revinfo.length)) {
 724             ret = -EINVAL;
 725             break;
 726         }
 727         /*
 728          * Once we start to support revisions with additional data, we'll
 729          * need to fetch it here. Nothing to do for now, though.
 730          */
 731         if (dev->revision >= 0 ||
 732             revinfo.revision > virtio_ccw_rev_max(dev) ||
 733             (dev->force_revision_1 && !revinfo.revision)) {
 734             ret = -ENOSYS;
 735             break;
 736         }
 737         ret = 0;
 738         dev->revision = revinfo.revision;
 739         break;
 740     default:
 741         ret = -ENOSYS;
 742         break;
 743     }
 744     return ret;
 745 }
 746
 747 static void virtio_sch_disable_cb(SubchDev *sch)
 748 {
 749     VirtioCcwDevice *dev = sch->driver_data;
 750
 751     dev->revision = -1;
 752 }
 753
 754 static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp)
 755 {
 756     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
 757     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 758     CCWDeviceClass *ck = CCW_DEVICE_GET_CLASS(ccw_dev);
 759     DeviceState *parent = DEVICE(ccw_dev);
 760     BusState *qbus = qdev_get_parent_bus(parent);
 761     VirtualCssBus *cbus = VIRTUAL_CSS_BUS(qbus);
 762     SubchDev *sch;
 763     Error *err = NULL;
 764
 765     sch = css_create_sch(ccw_dev->devno, true, cbus->squash_mcss, errp);
 766     if (!sch) {
 767         return;
 768     }
 769     if (!virtio_ccw_rev_max(dev) && dev->force_revision_1) {
 770         error_setg(&err, "Invalid value of property max_rev "
 771                    "(is %d expected >= 1)", virtio_ccw_rev_max(dev));
 772         goto out_err;
 773     }
 774
 775     sch->driver_data = dev;
 776     sch->ccw_cb = virtio_ccw_cb;
 777     sch->disable_cb = virtio_sch_disable_cb;
 778     sch->id.reserved = 0xff;
 779     sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
 780     sch->do_subchannel_work = do_subchannel_work_virtual;
 781     ccw_dev->sch = sch;
 782     dev->indicators = NULL;
 783     dev->revision = -1;
 784     css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
 785
 786     trace_virtio_ccw_new_device(
 787         sch->cssid, sch->ssid, sch->schid, sch->devno,
 788         ccw_dev->devno.valid ? "user-configured" : "auto-configured");
 789
 790     if (kvm_enabled() && !kvm_eventfds_enabled()) {
 791         dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
 792     }
 793
 794     if (k->realize) {
 795         k->realize(dev, &err);
 796         if (err) {
 797             goto out_err;
 798         }
 799     }
 800
 801     ck->realize(ccw_dev, &err);
 802     if (err) {
 803         goto out_err;
 804     }
 805
 806     return;
 807
 808 out_err:
 809     error_propagate(errp, err);
 810     css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
 811     ccw_dev->sch = NULL;
 812     g_free(sch);
 813 }
 814
 815 static int virtio_ccw_exit(VirtioCcwDevice *dev)
 816 {
 817     CcwDevice *ccw_dev = CCW_DEVICE(dev);
 818     SubchDev *sch = ccw_dev->sch;
 819
 820     if (sch) {
 821         css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
 822         g_free(sch);
 823     }
 824     if (dev->indicators) {
 825         release_indicator(&dev->routes.adapter, dev->indicators);
 826         dev->indicators = NULL;
 827     }
 828     return 0;
 829 }
 830
 831 static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 832 {
 833     DeviceState *qdev = DEVICE(ccw_dev);
 834     VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev);
 835     DeviceState *vdev = DEVICE(&dev->vdev);
 836
 837     virtio_net_set_netclient_name(&dev->vdev, qdev->id,
 838                                   object_get_typename(OBJECT(qdev)));
 839     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 840     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 841 }
 842
 843 static void virtio_ccw_net_instance_init(Object *obj)
 844 {
 845     VirtIONetCcw *dev = VIRTIO_NET_CCW(obj);
 846
 847     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 848                                 TYPE_VIRTIO_NET);
 849     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 850                               "bootindex", &error_abort);
 851 }
 852
 853 static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 854 {
 855     VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev);
 856     DeviceState *vdev = DEVICE(&dev->vdev);
 857
 858     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 859     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 860 }
 861
 862 static void virtio_ccw_blk_instance_init(Object *obj)
 863 {
 864     VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
 865
 866     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 867                                 TYPE_VIRTIO_BLK);
 868     object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
 869                               "bootindex", &error_abort);
 870 }
 871
 872 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 873 {
 874     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev);
 875     DeviceState *vdev = DEVICE(&dev->vdev);
 876     DeviceState *proxy = DEVICE(ccw_dev);
 877     char *bus_name;
 878
 879     /*
 880      * For command line compatibility, this sets the virtio-serial-device bus
 881      * name as before.
 882      */
 883     if (proxy->id) {
 884         bus_name = g_strdup_printf("%s.0", proxy->id);
 885         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 886         g_free(bus_name);
 887     }
 888
 889     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 890     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 891 }
 892
 893
 894 static void virtio_ccw_serial_instance_init(Object *obj)
 895 {
 896     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
 897
 898     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 899                                 TYPE_VIRTIO_SERIAL);
 900 }
 901
 902 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 903 {
 904     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev);
 905     DeviceState *vdev = DEVICE(&dev->vdev);
 906
 907     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 908     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 909 }
 910
 911 static void virtio_ccw_balloon_instance_init(Object *obj)
 912 {
 913     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
 914
 915     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 916                                 TYPE_VIRTIO_BALLOON);
 917     object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev),
 918                               "guest-stats", &error_abort);
 919     object_property_add_alias(obj, "guest-stats-polling-interval",
 920                               OBJECT(&dev->vdev),
 921                               "guest-stats-polling-interval", &error_abort);
 922 }
 923
 924 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 925 {
 926     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
 927     DeviceState *vdev = DEVICE(&dev->vdev);
 928     DeviceState *qdev = DEVICE(ccw_dev);
 929     char *bus_name;
 930
 931     /*
 932      * For command line compatibility, this sets the virtio-scsi-device bus
 933      * name as before.
 934      */
 935     if (qdev->id) {
 936         bus_name = g_strdup_printf("%s.0", qdev->id);
 937         virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
 938         g_free(bus_name);
 939     }
 940
 941     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 942     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 943 }
 944
 945 static void virtio_ccw_scsi_instance_init(Object *obj)
 946 {
 947     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
 948
 949     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 950                                 TYPE_VIRTIO_SCSI);
 951 }
 952
 953 #ifdef CONFIG_VHOST_SCSI
 954 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 955 {
 956     VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
 957     DeviceState *vdev = DEVICE(&dev->vdev);
 958
 959     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 960     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
 961 }
 962
 963 static void vhost_ccw_scsi_instance_init(Object *obj)
 964 {
 965     VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
 966
 967     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
 968                                 TYPE_VHOST_SCSI);
 969 }
 970 #endif
 971
 972 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 973 {
 974     VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
 975     DeviceState *vdev = DEVICE(&dev->vdev);
 976     Error *err = NULL;
 977
 978     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 979     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 980     if (err) {
 981         error_propagate(errp, err);
 982         return;
 983     }
 984
 985     object_property_set_link(OBJECT(dev),
 986                              OBJECT(dev->vdev.conf.rng), "rng",
 987                              NULL);
 988 }
 989
 990 static void virtio_ccw_crypto_realize(VirtioCcwDevice *ccw_dev, Error **errp)
 991 {
 992     VirtIOCryptoCcw *dev = VIRTIO_CRYPTO_CCW(ccw_dev);
 993     DeviceState *vdev = DEVICE(&dev->vdev);
 994     Error *err = NULL;
 995
 996     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 997     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
 998     if (err) {
 999         error_propagate(errp, err);
1000         return;
1001     }
1002
1003     object_property_set_link(OBJECT(vdev),
1004                              OBJECT(dev->vdev.conf.cryptodev), "cryptodev",
1005                              NULL);
1006 }
1007
1008 /* DeviceState to VirtioCcwDevice. Note: used on datapath,
1009  * be careful and test performance if you change this.
1010  */
1011 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d)
1012 {
1013     CcwDevice *ccw_dev = to_ccw_dev_fast(d);
1014
1015     return container_of(ccw_dev, VirtioCcwDevice, parent_obj);
1016 }
1017
1018 static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc,
1019                                      uint8_t to_be_set)
1020 {
1021     uint8_t ind_old, ind_new;
1022     hwaddr len = 1;
1023     uint8_t *ind_addr;
1024
1025     ind_addr = cpu_physical_memory_map(ind_loc, &len, 1);
1026     if (!ind_addr) {
1027         error_report("%s(%x.%x.%04x): unable to access indicator",
1028                      __func__, sch->cssid, sch->ssid, sch->schid);
1029         return -1;
1030     }
1031     do {
1032         ind_old = *ind_addr;
1033         ind_new = ind_old | to_be_set;
1034     } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old);
1035     trace_virtio_ccw_set_ind(ind_loc, ind_old, ind_new);
1036     cpu_physical_memory_unmap(ind_addr, len, 1, len);
1037
1038     return ind_old;
1039 }
1040
1041 static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
1042 {
1043     VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d);
1044     CcwDevice *ccw_dev = to_ccw_dev_fast(d);
1045     SubchDev *sch = ccw_dev->sch;
1046     uint64_t indicators;
1047
1048     /* queue indicators + secondary indicators */
1049     if (vector >= VIRTIO_QUEUE_MAX + 64) {
1050         return;
1051     }
1052
1053     if (vector < VIRTIO_QUEUE_MAX) {
1054         if (!dev->indicators) {
1055             return;
1056         }
1057         if (sch->thinint_active) {
1058             /*
1059              * In the adapter interrupt case, indicators points to a
1060              * memory area that may be (way) larger than 64 bit and
1061              * ind_bit indicates the start of the indicators in a big
1062              * endian notation.
1063              */
1064             uint64_t ind_bit = dev->routes.adapter.ind_offset;
1065
1066             virtio_set_ind_atomic(sch, dev->indicators->addr +
1067                                   (ind_bit + vector) / 8,
1068                                   0x80 >> ((ind_bit + vector) % 8));
1069             if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr,
1070                                        0x01)) {
1071                 css_adapter_interrupt(CSS_IO_ADAPTER_VIRTIO, dev->thinint_isc);
1072             }
1073         } else {
1074             indicators = address_space_ldq(&address_space_memory,
1075                                            dev->indicators->addr,
1076                                            MEMTXATTRS_UNSPECIFIED,
1077                                            NULL);
1078             indicators |= 1ULL << vector;
1079             address_space_stq(&address_space_memory, dev->indicators->addr,
1080                               indicators, MEMTXATTRS_UNSPECIFIED, NULL);
1081             css_conditional_io_interrupt(sch);
1082         }
1083     } else {
1084         if (!dev->indicators2) {
1085             return;
1086         }
1087         vector = 0;
1088         indicators = address_space_ldq(&address_space_memory,
1089                                        dev->indicators2->addr,
1090                                        MEMTXATTRS_UNSPECIFIED,
1091                                        NULL);
1092         indicators |= 1ULL << vector;
1093         address_space_stq(&address_space_memory, dev->indicators2->addr,
1094                           indicators, MEMTXATTRS_UNSPECIFIED, NULL);
1095         css_conditional_io_interrupt(sch);
1096     }
1097 }
1098
1099 static void virtio_ccw_reset(DeviceState *d)
1100 {
1101     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1102     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1103     CcwDevice *ccw_dev = CCW_DEVICE(d);
1104
1105     virtio_ccw_reset_virtio(dev, vdev);
1106     css_reset_sch(ccw_dev->sch);
1107 }
1108
1109 static void virtio_ccw_vmstate_change(DeviceState *d, bool running)
1110 {
1111     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1112
1113     if (running) {
1114         virtio_ccw_start_ioeventfd(dev);
1115     } else {
1116         virtio_ccw_stop_ioeventfd(dev);
1117     }
1118 }
1119
1120 static bool virtio_ccw_query_guest_notifiers(DeviceState *d)
1121 {
1122     CcwDevice *dev = CCW_DEVICE(d);
1123
1124     return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA);
1125 }
1126
1127 static int virtio_ccw_get_mappings(VirtioCcwDevice *dev)
1128 {
1129     int r;
1130     CcwDevice *ccw_dev = CCW_DEVICE(dev);
1131
1132     if (!ccw_dev->sch->thinint_active) {
1133         return -EINVAL;
1134     }
1135
1136     r = map_indicator(&dev->routes.adapter, dev->summary_indicator);
1137     if (r) {
1138         return r;
1139     }
1140     r = map_indicator(&dev->routes.adapter, dev->indicators);
1141     if (r) {
1142         return r;
1143     }
1144     dev->routes.adapter.summary_addr = dev->summary_indicator->map;
1145     dev->routes.adapter.ind_addr = dev->indicators->map;
1146
1147     return 0;
1148 }
1149
1150 static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs)
1151 {
1152     int i;
1153     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1154     int ret;
1155     S390FLICState *fs = s390_get_flic();
1156     S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
1157
1158     ret = virtio_ccw_get_mappings(dev);
1159     if (ret) {
1160         return ret;
1161     }
1162     for (i = 0; i < nvqs; i++) {
1163         if (!virtio_queue_get_num(vdev, i)) {
1164             break;
1165         }
1166     }
1167     dev->routes.num_routes = i;
1168     return fsc->add_adapter_routes(fs, &dev->routes);
1169 }
1170
1171 static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs)
1172 {
1173     S390FLICState *fs = s390_get_flic();
1174     S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
1175
1176     fsc->release_adapter_routes(fs, &dev->routes);
1177 }
1178
1179 static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n)
1180 {
1181     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1182     VirtQueue *vq = virtio_get_queue(vdev, n);
1183     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1184
1185     return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL,
1186                                               dev->routes.gsi[n]);
1187 }
1188
1189 static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n)
1190 {
1191     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1192     VirtQueue *vq = virtio_get_queue(vdev, n);
1193     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1194     int ret;
1195
1196     ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier,
1197                                                 dev->routes.gsi[n]);
1198     assert(ret == 0);
1199 }
1200
1201 static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n,
1202                                          bool assign, bool with_irqfd)
1203 {
1204     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1205     VirtQueue *vq = virtio_get_queue(vdev, n);
1206     EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
1207     VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
1208
1209     if (assign) {
1210         int r = event_notifier_init(notifier, 0);
1211
1212         if (r < 0) {
1213             return r;
1214         }
1215         virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
1216         if (with_irqfd) {
1217             r = virtio_ccw_add_irqfd(dev, n);
1218             if (r) {
1219                 virtio_queue_set_guest_notifier_fd_handler(vq, false,
1220                                                            with_irqfd);
1221                 return r;
1222             }
1223         }
1224         /*
1225          * We do not support individual masking for channel devices, so we
1226          * need to manually trigger any guest masking callbacks here.
1227          */
1228         if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) {
1229             k->guest_notifier_mask(vdev, n, false);
1230         }
1231         /* get lost events and re-inject */
1232         if (k->guest_notifier_pending &&
1233             k->guest_notifier_pending(vdev, n)) {
1234             event_notifier_set(notifier);
1235         }
1236     } else {
1237         if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) {
1238             k->guest_notifier_mask(vdev, n, true);
1239         }
1240         if (with_irqfd) {
1241             virtio_ccw_remove_irqfd(dev, n);
1242         }
1243         virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
1244         event_notifier_cleanup(notifier);
1245     }
1246     return 0;
1247 }
1248
1249 static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs,
1250                                           bool assigned)
1251 {
1252     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1253     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1254     CcwDevice *ccw_dev = CCW_DEVICE(d);
1255     bool with_irqfd = ccw_dev->sch->thinint_active && kvm_irqfds_enabled();
1256     int r, n;
1257
1258     if (with_irqfd && assigned) {
1259         /* irq routes need to be set up before assigning irqfds */
1260         r = virtio_ccw_setup_irqroutes(dev, nvqs);
1261         if (r < 0) {
1262             goto irqroute_error;
1263         }
1264     }
1265     for (n = 0; n < nvqs; n++) {
1266         if (!virtio_queue_get_num(vdev, n)) {
1267             break;
1268         }
1269         r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd);
1270         if (r < 0) {
1271             goto assign_error;
1272         }
1273     }
1274     if (with_irqfd && !assigned) {
1275         /* release irq routes after irqfds have been released */
1276         virtio_ccw_release_irqroutes(dev, nvqs);
1277     }
1278     return 0;
1279
1280 assign_error:
1281     while (--n >= 0) {
1282         virtio_ccw_set_guest_notifier(dev, n, !assigned, false);
1283     }
1284 irqroute_error:
1285     if (with_irqfd && assigned) {
1286         virtio_ccw_release_irqroutes(dev, nvqs);
1287     }
1288     return r;
1289 }
1290
1291 static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f)
1292 {
1293     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1294     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1295
1296     qemu_put_be16(f, virtio_queue_vector(vdev, n));
1297 }
1298
1299 static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f)
1300 {
1301     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1302     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1303     uint16_t vector;
1304
1305     qemu_get_be16s(f, &vector);
1306     virtio_queue_set_vector(vdev, n , vector);
1307
1308     return 0;
1309 }
1310
1311 static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f)
1312 {
1313     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1314     vmstate_save_state(f, &vmstate_virtio_ccw_dev, dev, NULL);
1315 }
1316
1317 static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
1318 {
1319     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1320     return vmstate_load_state(f, &vmstate_virtio_ccw_dev, dev, 1);
1321 }
1322
1323 static void virtio_ccw_pre_plugged(DeviceState *d, Error **errp)
1324 {
1325    VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1326    VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1327
1328     if (dev->max_rev >= 1) {
1329         virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
1330     }
1331 }
1332
1333 /* This is called by virtio-bus just after the device is plugged. */
1334 static void virtio_ccw_device_plugged(DeviceState *d, Error **errp)
1335 {
1336     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1337     VirtIODevice *vdev = virtio_bus_get_device(&dev->bus);
1338     CcwDevice *ccw_dev = CCW_DEVICE(d);
1339     SubchDev *sch = ccw_dev->sch;
1340     int n = virtio_get_num_queues(vdev);
1341     S390FLICState *flic = s390_get_flic();
1342
1343     if (!virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
1344         dev->max_rev = 0;
1345     }
1346
1347     if (virtio_get_num_queues(vdev) > VIRTIO_QUEUE_MAX) {
1348         error_setg(errp, "The number of virtqueues %d "
1349                    "exceeds virtio limit %d", n,
1350                    VIRTIO_QUEUE_MAX);
1351         return;
1352     }
1353     if (virtio_get_num_queues(vdev) > flic->adapter_routes_max_batch) {
1354         error_setg(errp, "The number of virtqueues %d "
1355                    "exceeds flic adapter route limit %d", n,
1356                    flic->adapter_routes_max_batch);
1357         return;
1358     }
1359
1360     sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus);
1361
1362
1363     css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid,
1364                           d->hotplugged, 1);
1365 }
1366
1367 static void virtio_ccw_device_unplugged(DeviceState *d)
1368 {
1369     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
1370
1371     virtio_ccw_stop_ioeventfd(dev);
1372 }
1373 /**************** Virtio-ccw Bus Device Descriptions *******************/
1374
1375 static Property virtio_ccw_net_properties[] = {
1376     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1377                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1378     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1379                        VIRTIO_CCW_MAX_REV),
1380     DEFINE_PROP_END_OF_LIST(),
1381 };
1382
1383 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data)
1384 {
1385     DeviceClass *dc = DEVICE_CLASS(klass);
1386     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1387
1388     k->realize = virtio_ccw_net_realize;
1389     k->exit = virtio_ccw_exit;
1390     dc->reset = virtio_ccw_reset;
1391     dc->props = virtio_ccw_net_properties;
1392     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
1393 }
1394
1395 static const TypeInfo virtio_ccw_net = {
1396     .name          = TYPE_VIRTIO_NET_CCW,
1397     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1398     .instance_size = sizeof(VirtIONetCcw),
1399     .instance_init = virtio_ccw_net_instance_init,
1400     .class_init    = virtio_ccw_net_class_init,
1401 };
1402
1403 static Property virtio_ccw_blk_properties[] = {
1404     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1405                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1406     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1407                        VIRTIO_CCW_MAX_REV),
1408     DEFINE_PROP_END_OF_LIST(),
1409 };
1410
1411 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
1412 {
1413     DeviceClass *dc = DEVICE_CLASS(klass);
1414     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1415
1416     k->realize = virtio_ccw_blk_realize;
1417     k->exit = virtio_ccw_exit;
1418     dc->reset = virtio_ccw_reset;
1419     dc->props = virtio_ccw_blk_properties;
1420     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1421 }
1422
1423 static const TypeInfo virtio_ccw_blk = {
1424     .name          = TYPE_VIRTIO_BLK_CCW,
1425     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1426     .instance_size = sizeof(VirtIOBlkCcw),
1427     .instance_init = virtio_ccw_blk_instance_init,
1428     .class_init    = virtio_ccw_blk_class_init,
1429 };
1430
1431 static Property virtio_ccw_serial_properties[] = {
1432     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1433                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1434     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1435                        VIRTIO_CCW_MAX_REV),
1436     DEFINE_PROP_END_OF_LIST(),
1437 };
1438
1439 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
1440 {
1441     DeviceClass *dc = DEVICE_CLASS(klass);
1442     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1443
1444     k->realize = virtio_ccw_serial_realize;
1445     k->exit = virtio_ccw_exit;
1446     dc->reset = virtio_ccw_reset;
1447     dc->props = virtio_ccw_serial_properties;
1448     set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
1449 }
1450
1451 static const TypeInfo virtio_ccw_serial = {
1452     .name          = TYPE_VIRTIO_SERIAL_CCW,
1453     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1454     .instance_size = sizeof(VirtioSerialCcw),
1455     .instance_init = virtio_ccw_serial_instance_init,
1456     .class_init    = virtio_ccw_serial_class_init,
1457 };
1458
1459 static Property virtio_ccw_balloon_properties[] = {
1460     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1461                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1462     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1463                        VIRTIO_CCW_MAX_REV),
1464     DEFINE_PROP_END_OF_LIST(),
1465 };
1466
1467 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
1468 {
1469     DeviceClass *dc = DEVICE_CLASS(klass);
1470     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1471
1472     k->realize = virtio_ccw_balloon_realize;
1473     k->exit = virtio_ccw_exit;
1474     dc->reset = virtio_ccw_reset;
1475     dc->props = virtio_ccw_balloon_properties;
1476     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1477 }
1478
1479 static const TypeInfo virtio_ccw_balloon = {
1480     .name          = TYPE_VIRTIO_BALLOON_CCW,
1481     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1482     .instance_size = sizeof(VirtIOBalloonCcw),
1483     .instance_init = virtio_ccw_balloon_instance_init,
1484     .class_init    = virtio_ccw_balloon_class_init,
1485 };
1486
1487 static Property virtio_ccw_scsi_properties[] = {
1488     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1489                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1490     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1491                        VIRTIO_CCW_MAX_REV),
1492     DEFINE_PROP_END_OF_LIST(),
1493 };
1494
1495 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
1496 {
1497     DeviceClass *dc = DEVICE_CLASS(klass);
1498     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1499
1500     k->realize = virtio_ccw_scsi_realize;
1501     k->exit = virtio_ccw_exit;
1502     dc->reset = virtio_ccw_reset;
1503     dc->props = virtio_ccw_scsi_properties;
1504     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1505 }
1506
1507 static const TypeInfo virtio_ccw_scsi = {
1508     .name          = TYPE_VIRTIO_SCSI_CCW,
1509     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1510     .instance_size = sizeof(VirtIOSCSICcw),
1511     .instance_init = virtio_ccw_scsi_instance_init,
1512     .class_init    = virtio_ccw_scsi_class_init,
1513 };
1514
1515 #ifdef CONFIG_VHOST_SCSI
1516 static Property vhost_ccw_scsi_properties[] = {
1517     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1518                        VIRTIO_CCW_MAX_REV),
1519     DEFINE_PROP_END_OF_LIST(),
1520 };
1521
1522 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data)
1523 {
1524     DeviceClass *dc = DEVICE_CLASS(klass);
1525     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1526
1527     k->realize = vhost_ccw_scsi_realize;
1528     k->exit = virtio_ccw_exit;
1529     dc->reset = virtio_ccw_reset;
1530     dc->props = vhost_ccw_scsi_properties;
1531     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1532 }
1533
1534 static const TypeInfo vhost_ccw_scsi = {
1535     .name          = TYPE_VHOST_SCSI_CCW,
1536     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1537     .instance_size = sizeof(VHostSCSICcw),
1538     .instance_init = vhost_ccw_scsi_instance_init,
1539     .class_init    = vhost_ccw_scsi_class_init,
1540 };
1541 #endif
1542
1543 static void virtio_ccw_rng_instance_init(Object *obj)
1544 {
1545     VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
1546
1547     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1548                                 TYPE_VIRTIO_RNG);
1549 }
1550
1551 static Property virtio_ccw_rng_properties[] = {
1552     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1553                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1554     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1555                        VIRTIO_CCW_MAX_REV),
1556     DEFINE_PROP_END_OF_LIST(),
1557 };
1558
1559 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
1560 {
1561     DeviceClass *dc = DEVICE_CLASS(klass);
1562     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1563
1564     k->realize = virtio_ccw_rng_realize;
1565     k->exit = virtio_ccw_exit;
1566     dc->reset = virtio_ccw_reset;
1567     dc->props = virtio_ccw_rng_properties;
1568     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1569 }
1570
1571 static const TypeInfo virtio_ccw_rng = {
1572     .name          = TYPE_VIRTIO_RNG_CCW,
1573     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1574     .instance_size = sizeof(VirtIORNGCcw),
1575     .instance_init = virtio_ccw_rng_instance_init,
1576     .class_init    = virtio_ccw_rng_class_init,
1577 };
1578
1579 static Property virtio_ccw_crypto_properties[] = {
1580     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1581                     VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1582     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1583                        VIRTIO_CCW_MAX_REV),
1584     DEFINE_PROP_END_OF_LIST(),
1585 };
1586
1587 static void virtio_ccw_crypto_instance_init(Object *obj)
1588 {
1589     VirtIOCryptoCcw *dev = VIRTIO_CRYPTO_CCW(obj);
1590     VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
1591
1592     ccw_dev->force_revision_1 = true;
1593     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1594                                 TYPE_VIRTIO_CRYPTO);
1595 }
1596
1597 static void virtio_ccw_crypto_class_init(ObjectClass *klass, void *data)
1598 {
1599     DeviceClass *dc = DEVICE_CLASS(klass);
1600     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1601
1602     k->realize = virtio_ccw_crypto_realize;
1603     k->exit = virtio_ccw_exit;
1604     dc->reset = virtio_ccw_reset;
1605     dc->props = virtio_ccw_crypto_properties;
1606     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1607 }
1608
1609 static const TypeInfo virtio_ccw_crypto = {
1610     .name          = TYPE_VIRTIO_CRYPTO_CCW,
1611     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1612     .instance_size = sizeof(VirtIOCryptoCcw),
1613     .instance_init = virtio_ccw_crypto_instance_init,
1614     .class_init    = virtio_ccw_crypto_class_init,
1615 };
1616
1617 static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp)
1618 {
1619     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
1620
1621     virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev);
1622     virtio_ccw_device_realize(_dev, errp);
1623 }
1624
1625 static int virtio_ccw_busdev_exit(DeviceState *dev)
1626 {
1627     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
1628     VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
1629
1630     return _info->exit(_dev);
1631 }
1632
1633 static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev,
1634                                      DeviceState *dev, Error **errp)
1635 {
1636     VirtioCcwDevice *_dev = to_virtio_ccw_dev_fast(dev);
1637
1638     virtio_ccw_stop_ioeventfd(_dev);
1639 }
1640
1641 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data)
1642 {
1643     DeviceClass *dc = DEVICE_CLASS(klass);
1644     CCWDeviceClass *k = CCW_DEVICE_CLASS(dc);
1645
1646     k->unplug = virtio_ccw_busdev_unplug;
1647     dc->realize = virtio_ccw_busdev_realize;
1648     dc->exit = virtio_ccw_busdev_exit;
1649     dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
1650 }
1651
1652 static const TypeInfo virtio_ccw_device_info = {
1653     .name = TYPE_VIRTIO_CCW_DEVICE,
1654     .parent = TYPE_CCW_DEVICE,
1655     .instance_size = sizeof(VirtioCcwDevice),
1656     .class_init = virtio_ccw_device_class_init,
1657     .class_size = sizeof(VirtIOCCWDeviceClass),
1658     .abstract = true,
1659 };
1660
1661 /* virtio-ccw-bus */
1662
1663 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size,
1664                                VirtioCcwDevice *dev)
1665 {
1666     DeviceState *qdev = DEVICE(dev);
1667     char virtio_bus_name[] = "virtio-bus";
1668
1669     qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS,
1670                         qdev, virtio_bus_name);
1671 }
1672
1673 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
1674 {
1675     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
1676     BusClass *bus_class = BUS_CLASS(klass);
1677
1678     bus_class->max_dev = 1;
1679     k->notify = virtio_ccw_notify;
1680     k->vmstate_change = virtio_ccw_vmstate_change;
1681     k->query_guest_notifiers = virtio_ccw_query_guest_notifiers;
1682     k->set_guest_notifiers = virtio_ccw_set_guest_notifiers;
1683     k->save_queue = virtio_ccw_save_queue;
1684     k->load_queue = virtio_ccw_load_queue;
1685     k->save_config = virtio_ccw_save_config;
1686     k->load_config = virtio_ccw_load_config;
1687     k->pre_plugged = virtio_ccw_pre_plugged;
1688     k->device_plugged = virtio_ccw_device_plugged;
1689     k->device_unplugged = virtio_ccw_device_unplugged;
1690     k->ioeventfd_enabled = virtio_ccw_ioeventfd_enabled;
1691     k->ioeventfd_assign = virtio_ccw_ioeventfd_assign;
1692 }
1693
1694 static const TypeInfo virtio_ccw_bus_info = {
1695     .name = TYPE_VIRTIO_CCW_BUS,
1696     .parent = TYPE_VIRTIO_BUS,
1697     .instance_size = sizeof(VirtioCcwBusState),
1698     .class_init = virtio_ccw_bus_class_init,
1699 };
1700
1701 #ifdef CONFIG_VIRTFS
1702 static Property virtio_ccw_9p_properties[] = {
1703     DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags,
1704             VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true),
1705     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1706                        VIRTIO_CCW_MAX_REV),
1707     DEFINE_PROP_END_OF_LIST(),
1708 };
1709
1710 static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp)
1711 {
1712     V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev);
1713     DeviceState *vdev = DEVICE(&dev->vdev);
1714
1715     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
1716     object_property_set_bool(OBJECT(vdev), true, "realized", errp);
1717 }
1718
1719 static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data)
1720 {
1721     DeviceClass *dc = DEVICE_CLASS(klass);
1722     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1723
1724     k->exit = virtio_ccw_exit;
1725     k->realize = virtio_ccw_9p_realize;
1726     dc->reset = virtio_ccw_reset;
1727     dc->props = virtio_ccw_9p_properties;
1728     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1729 }
1730
1731 static void virtio_ccw_9p_instance_init(Object *obj)
1732 {
1733     V9fsCCWState *dev = VIRTIO_9P_CCW(obj);
1734
1735     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1736                                 TYPE_VIRTIO_9P);
1737 }
1738
1739 static const TypeInfo virtio_ccw_9p_info = {
1740     .name          = TYPE_VIRTIO_9P_CCW,
1741     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1742     .instance_size = sizeof(V9fsCCWState),
1743     .instance_init = virtio_ccw_9p_instance_init,
1744     .class_init    = virtio_ccw_9p_class_init,
1745 };
1746 #endif
1747
1748 #ifdef CONFIG_VHOST_VSOCK
1749
1750 static Property vhost_vsock_ccw_properties[] = {
1751     DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
1752                        VIRTIO_CCW_MAX_REV),
1753     DEFINE_PROP_END_OF_LIST(),
1754 };
1755
1756 static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp)
1757 {
1758     VHostVSockCCWState *dev = VHOST_VSOCK_CCW(ccw_dev);
1759     DeviceState *vdev = DEVICE(&dev->vdev);
1760     Error *err = NULL;
1761
1762     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
1763     object_property_set_bool(OBJECT(vdev), true, "realized", &err);
1764     error_propagate(errp, err);
1765 }
1766
1767 static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)
1768 {
1769     DeviceClass *dc = DEVICE_CLASS(klass);
1770     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
1771
1772     k->realize = vhost_vsock_ccw_realize;
1773     k->exit = virtio_ccw_exit;
1774     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
1775     dc->props = vhost_vsock_ccw_properties;
1776     dc->reset = virtio_ccw_reset;
1777 }
1778
1779 static void vhost_vsock_ccw_instance_init(Object *obj)
1780 {
1781     VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj);
1782
1783     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
1784                                 TYPE_VHOST_VSOCK);
1785 }
1786
1787 static const TypeInfo vhost_vsock_ccw_info = {
1788     .name          = TYPE_VHOST_VSOCK_CCW,
1789     .parent        = TYPE_VIRTIO_CCW_DEVICE,
1790     .instance_size = sizeof(VHostVSockCCWState),
1791     .instance_init = vhost_vsock_ccw_instance_init,
1792     .class_init    = vhost_vsock_ccw_class_init,
1793 };
1794 #endif
1795
1796 static void virtio_ccw_register(void)
1797 {
1798     type_register_static(&virtio_ccw_bus_info);
1799     type_register_static(&virtio_ccw_device_info);
1800     type_register_static(&virtio_ccw_serial);
1801     type_register_static(&virtio_ccw_blk);
1802     type_register_static(&virtio_ccw_net);
1803     type_register_static(&virtio_ccw_balloon);
1804     type_register_static(&virtio_ccw_scsi);
1805 #ifdef CONFIG_VHOST_SCSI
1806     type_register_static(&vhost_ccw_scsi);
1807 #endif
1808     type_register_static(&virtio_ccw_rng);
1809 #ifdef CONFIG_VIRTFS
1810     type_register_static(&virtio_ccw_9p_info);
1811 #endif
1812 #ifdef CONFIG_VHOST_VSOCK
1813     type_register_static(&vhost_vsock_ccw_info);
1814 #endif
1815     type_register_static(&virtio_ccw_crypto);
1816 }
1817
1818 type_init(virtio_ccw_register)