hw/s390x/virtio-ccw.c

   1 /*
   2  * virtio ccw target implementation
   3  *
   4  * Copyright 2012 IBM Corp.
   5  * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
   6  *
   7  * This work is licensed under the terms of the GNU GPL, version 2 or (at
   8  * your option) any later version. See the COPYING file in the top-level
   9  * directory.
  10  */
  11
  12 #include "hw/hw.h"
  13 #include "block/block.h"
  14 #include "sysemu/blockdev.h"
  15 #include "sysemu/sysemu.h"
  16 #include "net/net.h"
  17 #include "monitor/monitor.h"
  18 #include "hw/virtio/virtio.h"
  19 #include "hw/virtio/virtio-serial.h"
  20 #include "hw/virtio/virtio-net.h"
  21 #include "hw/sysbus.h"
  22 #include "qemu/bitops.h"
  23 #include "hw/virtio/virtio-bus.h"
  24
  25 #include "ioinst.h"
  26 #include "css.h"
  27 #include "virtio-ccw.h"
  28 #include "trace.h"
  29
  30 static void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev);
  31
  32 static int virtual_css_bus_reset(BusState *qbus)
  33 {
  34     /* This should actually be modelled via the generic css */
  35     css_reset();
  36
  37     /* we dont traverse ourself, return 0 */
  38     return 0;
  39 }
  40
  41
  42 static void virtual_css_bus_class_init(ObjectClass *klass, void *data)
  43 {
  44     BusClass *k = BUS_CLASS(klass);
  45
  46     k->reset = virtual_css_bus_reset;
  47 }
  48
  49 static const TypeInfo virtual_css_bus_info = {
  50     .name = TYPE_VIRTUAL_CSS_BUS,
  51     .parent = TYPE_BUS,
  52     .instance_size = sizeof(VirtualCssBus),
  53     .class_init = virtual_css_bus_class_init,
  54 };
  55
  56 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch)
  57 {
  58     VirtIODevice *vdev = NULL;
  59
  60     if (sch->driver_data) {
  61         vdev = ((VirtioCcwDevice *)sch->driver_data)->vdev;
  62     }
  63     return vdev;
  64 }
  65
  66 VirtualCssBus *virtual_css_bus_init(void)
  67 {
  68     VirtualCssBus *cbus;
  69     BusState *bus;
  70     DeviceState *dev;
  71
  72     /* Create bridge device */
  73     dev = qdev_create(NULL, "virtual-css-bridge");
  74     qdev_init_nofail(dev);
  75
  76     /* Create bus on bridge device */
  77     bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css");
  78     cbus = VIRTUAL_CSS_BUS(bus);
  79
  80     /* Enable hotplugging */
  81     bus->allow_hotplug = 1;
  82
  83     return cbus;
  84 }
  85
  86 /* Communication blocks used by several channel commands. */
  87 typedef struct VqInfoBlock {
  88     uint64_t queue;
  89     uint32_t align;
  90     uint16_t index;
  91     uint16_t num;
  92 } QEMU_PACKED VqInfoBlock;
  93
  94 typedef struct VqConfigBlock {
  95     uint16_t index;
  96     uint16_t num_max;
  97 } QEMU_PACKED VqConfigBlock;
  98
  99 typedef struct VirtioFeatDesc {
 100     uint32_t features;
 101     uint8_t index;
 102 } QEMU_PACKED VirtioFeatDesc;
 103
 104 /* Specify where the virtqueues for the subchannel are in guest memory. */
 105 static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align,
 106                               uint16_t index, uint16_t num)
 107 {
 108     VirtioCcwDevice *dev = sch->driver_data;
 109
 110     if (index > VIRTIO_PCI_QUEUE_MAX) {
 111         return -EINVAL;
 112     }
 113
 114     /* Current code in virtio.c relies on 4K alignment. */
 115     if (addr && (align != 4096)) {
 116         return -EINVAL;
 117     }
 118
 119     if (!dev) {
 120         return -EINVAL;
 121     }
 122
 123     virtio_queue_set_addr(dev->vdev, index, addr);
 124     if (!addr) {
 125         virtio_queue_set_vector(dev->vdev, index, 0);
 126     } else {
 127         /* Fail if we don't have a big enough queue. */
 128         /* TODO: Add interface to handle vring.num changing */
 129         if (virtio_queue_get_num(dev->vdev, index) > num) {
 130             return -EINVAL;
 131         }
 132         virtio_queue_set_vector(dev->vdev, index, index);
 133     }
 134     /* tell notify handler in case of config change */
 135     dev->vdev->config_vector = VIRTIO_PCI_QUEUE_MAX;
 136     return 0;
 137 }
 138
 139 static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
 140 {
 141     int ret;
 142     VqInfoBlock info;
 143     uint8_t status;
 144     VirtioFeatDesc features;
 145     void *config;
 146     hwaddr indicators;
 147     VqConfigBlock vq_config;
 148     VirtioCcwDevice *dev = sch->driver_data;
 149     bool check_len;
 150     int len;
 151     hwaddr hw_len;
 152
 153     if (!dev) {
 154         return -EINVAL;
 155     }
 156
 157     trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid,
 158                                    ccw.cmd_code);
 159     check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
 160
 161     /* Look at the command. */
 162     switch (ccw.cmd_code) {
 163     case CCW_CMD_SET_VQ:
 164         if (check_len) {
 165             if (ccw.count != sizeof(info)) {
 166                 ret = -EINVAL;
 167                 break;
 168             }
 169         } else if (ccw.count < sizeof(info)) {
 170             /* Can't execute command. */
 171             ret = -EINVAL;
 172             break;
 173         }
 174         if (!ccw.cda) {
 175             ret = -EFAULT;
 176         } else {
 177             info.queue = ldq_phys(ccw.cda);
 178             info.align = ldl_phys(ccw.cda + sizeof(info.queue));
 179             info.index = lduw_phys(ccw.cda + sizeof(info.queue)
 180                                    + sizeof(info.align));
 181             info.num = lduw_phys(ccw.cda + sizeof(info.queue)
 182                                  + sizeof(info.align)
 183                                  + sizeof(info.index));
 184             ret = virtio_ccw_set_vqs(sch, info.queue, info.align, info.index,
 185                                      info.num);
 186             sch->curr_status.scsw.count = 0;
 187         }
 188         break;
 189     case CCW_CMD_VDEV_RESET:
 190         virtio_reset(dev->vdev);
 191         ret = 0;
 192         break;
 193     case CCW_CMD_READ_FEAT:
 194         if (check_len) {
 195             if (ccw.count != sizeof(features)) {
 196                 ret = -EINVAL;
 197                 break;
 198             }
 199         } else if (ccw.count < sizeof(features)) {
 200             /* Can't execute command. */
 201             ret = -EINVAL;
 202             break;
 203         }
 204         if (!ccw.cda) {
 205             ret = -EFAULT;
 206         } else {
 207             features.index = ldub_phys(ccw.cda + sizeof(features.features));
 208             if (features.index < ARRAY_SIZE(dev->host_features)) {
 209                 features.features = dev->host_features[features.index];
 210             } else {
 211                 /* Return zeroes if the guest supports more feature bits. */
 212                 features.features = 0;
 213             }
 214             stl_le_phys(ccw.cda, features.features);
 215             sch->curr_status.scsw.count = ccw.count - sizeof(features);
 216             ret = 0;
 217         }
 218         break;
 219     case CCW_CMD_WRITE_FEAT:
 220         if (check_len) {
 221             if (ccw.count != sizeof(features)) {
 222                 ret = -EINVAL;
 223                 break;
 224             }
 225         } else if (ccw.count < sizeof(features)) {
 226             /* Can't execute command. */
 227             ret = -EINVAL;
 228             break;
 229         }
 230         if (!ccw.cda) {
 231             ret = -EFAULT;
 232         } else {
 233             features.index = ldub_phys(ccw.cda + sizeof(features.features));
 234             features.features = ldl_le_phys(ccw.cda);
 235             if (features.index < ARRAY_SIZE(dev->host_features)) {
 236                 virtio_bus_set_vdev_features(&dev->bus, features.features);
 237                 dev->vdev->guest_features = features.features;
 238             } else {
 239                 /*
 240                  * If the guest supports more feature bits, assert that it
 241                  * passes us zeroes for those we don't support.
 242                  */
 243                 if (features.features) {
 244                     fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n",
 245                             features.index, features.features);
 246                     /* XXX: do a unit check here? */
 247                 }
 248             }
 249             sch->curr_status.scsw.count = ccw.count - sizeof(features);
 250             ret = 0;
 251         }
 252         break;
 253     case CCW_CMD_READ_CONF:
 254         if (check_len) {
 255             if (ccw.count > dev->vdev->config_len) {
 256                 ret = -EINVAL;
 257                 break;
 258             }
 259         }
 260         len = MIN(ccw.count, dev->vdev->config_len);
 261         if (!ccw.cda) {
 262             ret = -EFAULT;
 263         } else {
 264             virtio_bus_get_vdev_config(&dev->bus, dev->vdev->config);
 265             /* XXX config space endianness */
 266             cpu_physical_memory_write(ccw.cda, dev->vdev->config, len);
 267             sch->curr_status.scsw.count = ccw.count - len;
 268             ret = 0;
 269         }
 270         break;
 271     case CCW_CMD_WRITE_CONF:
 272         if (check_len) {
 273             if (ccw.count > dev->vdev->config_len) {
 274                 ret = -EINVAL;
 275                 break;
 276             }
 277         }
 278         len = MIN(ccw.count, dev->vdev->config_len);
 279         hw_len = len;
 280         if (!ccw.cda) {
 281             ret = -EFAULT;
 282         } else {
 283             config = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
 284             if (!config) {
 285                 ret = -EFAULT;
 286             } else {
 287                 len = hw_len;
 288                 /* XXX config space endianness */
 289                 memcpy(dev->vdev->config, config, len);
 290                 cpu_physical_memory_unmap(config, hw_len, 0, hw_len);
 291                 virtio_bus_set_vdev_config(&dev->bus, dev->vdev->config);
 292                 sch->curr_status.scsw.count = ccw.count - len;
 293                 ret = 0;
 294             }
 295         }
 296         break;
 297     case CCW_CMD_WRITE_STATUS:
 298         if (check_len) {
 299             if (ccw.count != sizeof(status)) {
 300                 ret = -EINVAL;
 301                 break;
 302             }
 303         } else if (ccw.count < sizeof(status)) {
 304             /* Can't execute command. */
 305             ret = -EINVAL;
 306             break;
 307         }
 308         if (!ccw.cda) {
 309             ret = -EFAULT;
 310         } else {
 311             status = ldub_phys(ccw.cda);
 312             virtio_set_status(dev->vdev, status);
 313             if (dev->vdev->status == 0) {
 314                 virtio_reset(dev->vdev);
 315             }
 316             sch->curr_status.scsw.count = ccw.count - sizeof(status);
 317             ret = 0;
 318         }
 319         break;
 320     case CCW_CMD_SET_IND:
 321         if (check_len) {
 322             if (ccw.count != sizeof(indicators)) {
 323                 ret = -EINVAL;
 324                 break;
 325             }
 326         } else if (ccw.count < sizeof(indicators)) {
 327             /* Can't execute command. */
 328             ret = -EINVAL;
 329             break;
 330         }
 331         indicators = ldq_phys(ccw.cda);
 332         if (!indicators) {
 333             ret = -EFAULT;
 334         } else {
 335             dev->indicators = indicators;
 336             sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
 337             ret = 0;
 338         }
 339         break;
 340     case CCW_CMD_SET_CONF_IND:
 341         if (check_len) {
 342             if (ccw.count != sizeof(indicators)) {
 343                 ret = -EINVAL;
 344                 break;
 345             }
 346         } else if (ccw.count < sizeof(indicators)) {
 347             /* Can't execute command. */
 348             ret = -EINVAL;
 349             break;
 350         }
 351         indicators = ldq_phys(ccw.cda);
 352         if (!indicators) {
 353             ret = -EFAULT;
 354         } else {
 355             dev->indicators2 = indicators;
 356             sch->curr_status.scsw.count = ccw.count - sizeof(indicators);
 357             ret = 0;
 358         }
 359         break;
 360     case CCW_CMD_READ_VQ_CONF:
 361         if (check_len) {
 362             if (ccw.count != sizeof(vq_config)) {
 363                 ret = -EINVAL;
 364                 break;
 365             }
 366         } else if (ccw.count < sizeof(vq_config)) {
 367             /* Can't execute command. */
 368             ret = -EINVAL;
 369             break;
 370         }
 371         if (!ccw.cda) {
 372             ret = -EFAULT;
 373         } else {
 374             vq_config.index = lduw_phys(ccw.cda);
 375             vq_config.num_max = virtio_queue_get_num(dev->vdev,
 376                                                      vq_config.index);
 377             stw_phys(ccw.cda + sizeof(vq_config.index), vq_config.num_max);
 378             sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
 379             ret = 0;
 380         }
 381         break;
 382     default:
 383         ret = -ENOSYS;
 384         break;
 385     }
 386     return ret;
 387 }
 388
 389 static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev)
 390 {
 391     unsigned int cssid = 0;
 392     unsigned int ssid = 0;
 393     unsigned int schid;
 394     unsigned int devno;
 395     bool have_devno = false;
 396     bool found = false;
 397     SubchDev *sch;
 398     int ret;
 399     int num;
 400     DeviceState *parent = DEVICE(dev);
 401
 402     sch = g_malloc0(sizeof(SubchDev));
 403
 404     sch->driver_data = dev;
 405     dev->sch = sch;
 406
 407     dev->vdev = vdev;
 408     dev->indicators = 0;
 409
 410     /* Initialize subchannel structure. */
 411     sch->channel_prog = 0x0;
 412     sch->last_cmd_valid = false;
 413     sch->orb = NULL;
 414     /*
 415      * Use a device number if provided. Otherwise, fall back to subchannel
 416      * number.
 417      */
 418     if (dev->bus_id) {
 419         num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno);
 420         if (num == 3) {
 421             if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) {
 422                 ret = -EINVAL;
 423                 error_report("Invalid cssid or ssid: cssid %x, ssid %x",
 424                              cssid, ssid);
 425                 goto out_err;
 426             }
 427             /* Enforce use of virtual cssid. */
 428             if (cssid != VIRTUAL_CSSID) {
 429                 ret = -EINVAL;
 430                 error_report("cssid %x not valid for virtio devices", cssid);
 431                 goto out_err;
 432             }
 433             if (css_devno_used(cssid, ssid, devno)) {
 434                 ret = -EEXIST;
 435                 error_report("Device %x.%x.%04x already exists", cssid, ssid,
 436                              devno);
 437                 goto out_err;
 438             }
 439             sch->cssid = cssid;
 440             sch->ssid = ssid;
 441             sch->devno = devno;
 442             have_devno = true;
 443         } else {
 444             ret = -EINVAL;
 445             error_report("Malformed devno parameter '%s'", dev->bus_id);
 446             goto out_err;
 447         }
 448     }
 449
 450     /* Find the next free id. */
 451     if (have_devno) {
 452         for (schid = 0; schid <= MAX_SCHID; schid++) {
 453             if (!css_find_subch(1, cssid, ssid, schid)) {
 454                 sch->schid = schid;
 455                 css_subch_assign(cssid, ssid, schid, devno, sch);
 456                 found = true;
 457                 break;
 458             }
 459         }
 460         if (!found) {
 461             ret = -ENODEV;
 462             error_report("No free subchannel found for %x.%x.%04x", cssid, ssid,
 463                          devno);
 464             goto out_err;
 465         }
 466         trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
 467                                     "user-configured");
 468     } else {
 469         cssid = VIRTUAL_CSSID;
 470         for (ssid = 0; ssid <= MAX_SSID; ssid++) {
 471             for (schid = 0; schid <= MAX_SCHID; schid++) {
 472                 if (!css_find_subch(1, cssid, ssid, schid)) {
 473                     sch->cssid = cssid;
 474                     sch->ssid = ssid;
 475                     sch->schid = schid;
 476                     devno = schid;
 477                     /*
 478                      * If the devno is already taken, look further in this
 479                      * subchannel set.
 480                      */
 481                     while (css_devno_used(cssid, ssid, devno)) {
 482                         if (devno == MAX_SCHID) {
 483                             devno = 0;
 484                         } else if (devno == schid - 1) {
 485                             ret = -ENODEV;
 486                             error_report("No free devno found");
 487                             goto out_err;
 488                         } else {
 489                             devno++;
 490                         }
 491                     }
 492                     sch->devno = devno;
 493                     css_subch_assign(cssid, ssid, schid, devno, sch);
 494                     found = true;
 495                     break;
 496                 }
 497             }
 498             if (found) {
 499                 break;
 500             }
 501         }
 502         if (!found) {
 503             ret = -ENODEV;
 504             error_report("Virtual channel subsystem is full!");
 505             goto out_err;
 506         }
 507         trace_virtio_ccw_new_device(cssid, ssid, schid, devno,
 508                                     "auto-configured");
 509     }
 510
 511     /* Build initial schib. */
 512     css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE);
 513
 514     sch->ccw_cb = virtio_ccw_cb;
 515
 516     /* Build senseid data. */
 517     memset(&sch->id, 0, sizeof(SenseId));
 518     sch->id.reserved = 0xff;
 519     sch->id.cu_type = VIRTIO_CCW_CU_TYPE;
 520     sch->id.cu_model = dev->vdev->device_id;
 521
 522     /* Only the first 32 feature bits are used. */
 523     dev->host_features[0] = virtio_bus_get_vdev_features(&dev->bus,
 524                                                          dev->host_features[0]);
 525
 526     dev->host_features[0] |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
 527     dev->host_features[0] |= 0x1 << VIRTIO_F_BAD_FEATURE;
 528
 529     css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid,
 530                           parent->hotplugged, 1);
 531     return 0;
 532
 533 out_err:
 534     dev->sch = NULL;
 535     g_free(sch);
 536     return ret;
 537 }
 538
 539 static int virtio_ccw_exit(VirtioCcwDevice *dev)
 540 {
 541     SubchDev *sch = dev->sch;
 542
 543     if (sch) {
 544         css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
 545         g_free(sch);
 546     }
 547     dev->indicators = 0;
 548     return 0;
 549 }
 550
 551 static int virtio_ccw_net_init(VirtioCcwDevice *ccw_dev)
 552 {
 553     VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev);
 554     DeviceState *vdev = DEVICE(&dev->vdev);
 555
 556     virtio_net_set_config_size(&dev->vdev, ccw_dev->host_features[0]);
 557     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 558     if (qdev_init(vdev) < 0) {
 559         return -1;
 560     }
 561
 562     return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
 563 }
 564
 565 static void virtio_ccw_net_instance_init(Object *obj)
 566 {
 567     VirtIONetCcw *dev = VIRTIO_NET_CCW(obj);
 568     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_NET);
 569     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 570 }
 571
 572 static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev)
 573 {
 574     VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev);
 575     DeviceState *vdev = DEVICE(&dev->vdev);
 576     virtio_blk_set_conf(vdev, &(dev->blk));
 577     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 578     if (qdev_init(vdev) < 0) {
 579         return -1;
 580     }
 581
 582     return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
 583 }
 584
 585 static void virtio_ccw_blk_instance_init(Object *obj)
 586 {
 587     VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
 588     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
 589     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 590 }
 591
 592 static int virtio_ccw_serial_init(VirtioCcwDevice *ccw_dev)
 593 {
 594     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev);
 595     DeviceState *vdev = DEVICE(&dev->vdev);
 596
 597     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 598     if (qdev_init(vdev) < 0) {
 599         return -1;
 600     }
 601
 602     return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
 603 }
 604
 605
 606 static void virtio_ccw_serial_instance_init(Object *obj)
 607 {
 608     VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj);
 609     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SERIAL);
 610     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 611 }
 612
 613 static int virtio_ccw_balloon_init(VirtioCcwDevice *ccw_dev)
 614 {
 615     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev);
 616     DeviceState *vdev = DEVICE(&dev->vdev);
 617
 618     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 619     if (qdev_init(vdev) < 0) {
 620         return -1;
 621     }
 622
 623     return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
 624 }
 625
 626 static void balloon_ccw_stats_get_all(Object *obj, struct Visitor *v,
 627                                       void *opaque, const char *name,
 628                                       Error **errp)
 629 {
 630     VirtIOBalloonCcw *dev = opaque;
 631     object_property_get(OBJECT(&dev->vdev), v, "guest-stats", errp);
 632 }
 633
 634 static void balloon_ccw_stats_get_poll_interval(Object *obj, struct Visitor *v,
 635                                                 void *opaque, const char *name,
 636                                                 Error **errp)
 637 {
 638     VirtIOBalloonCcw *dev = opaque;
 639     object_property_get(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
 640                         errp);
 641 }
 642
 643 static void balloon_ccw_stats_set_poll_interval(Object *obj, struct Visitor *v,
 644                                                 void *opaque, const char *name,
 645                                                 Error **errp)
 646 {
 647     VirtIOBalloonCcw *dev = opaque;
 648     object_property_set(OBJECT(&dev->vdev), v, "guest-stats-polling-interval",
 649                         errp);
 650 }
 651
 652 static void virtio_ccw_balloon_instance_init(Object *obj)
 653 {
 654     VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj);
 655     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BALLOON);
 656     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 657
 658     object_property_add(obj, "guest-stats", "guest statistics",
 659                         balloon_ccw_stats_get_all, NULL, NULL, dev, NULL);
 660
 661     object_property_add(obj, "guest-stats-polling-interval", "int",
 662                         balloon_ccw_stats_get_poll_interval,
 663                         balloon_ccw_stats_set_poll_interval,
 664                         NULL, dev, NULL);
 665 }
 666
 667 static int virtio_ccw_scsi_init(VirtioCcwDevice *ccw_dev)
 668 {
 669     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev);
 670     DeviceState *vdev = DEVICE(&dev->vdev);
 671
 672     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 673     if (qdev_init(vdev) < 0) {
 674         return -1;
 675     }
 676
 677     return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
 678 }
 679
 680 static void virtio_ccw_scsi_instance_init(Object *obj)
 681 {
 682     VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj);
 683     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI);
 684     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 685 }
 686
 687 #ifdef CONFIG_VHOST_SCSI
 688 static int vhost_ccw_scsi_init(VirtioCcwDevice *ccw_dev)
 689 {
 690     VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev);
 691     DeviceState *vdev = DEVICE(&dev->vdev);
 692
 693     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 694     if (qdev_init(vdev) < 0) {
 695         return -1;
 696     }
 697
 698     return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
 699 }
 700
 701 static void vhost_ccw_scsi_instance_init(Object *obj)
 702 {
 703     VHostSCSICcw *dev = VHOST_SCSI_CCW(obj);
 704     object_initialize(OBJECT(&dev->vdev), TYPE_VHOST_SCSI);
 705     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 706 }
 707 #endif
 708
 709 static int virtio_ccw_rng_init(VirtioCcwDevice *ccw_dev)
 710 {
 711     VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev);
 712     DeviceState *vdev = DEVICE(&dev->vdev);
 713
 714     qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
 715     if (qdev_init(vdev) < 0) {
 716         return -1;
 717     }
 718
 719     object_property_set_link(OBJECT(dev),
 720                              OBJECT(dev->vdev.conf.default_backend), "rng",
 721                              NULL);
 722
 723     return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
 724 }
 725
 726 /* DeviceState to VirtioCcwDevice. Note: used on datapath,
 727  * be careful and test performance if you change this.
 728  */
 729 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d)
 730 {
 731     return container_of(d, VirtioCcwDevice, parent_obj);
 732 }
 733
 734 static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
 735 {
 736     VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d);
 737     SubchDev *sch = dev->sch;
 738     uint64_t indicators;
 739
 740     if (vector >= 128) {
 741         return;
 742     }
 743
 744     if (vector < VIRTIO_PCI_QUEUE_MAX) {
 745         if (!dev->indicators) {
 746             return;
 747         }
 748         indicators = ldq_phys(dev->indicators);
 749         indicators |= 1ULL << vector;
 750         stq_phys(dev->indicators, indicators);
 751     } else {
 752         if (!dev->indicators2) {
 753             return;
 754         }
 755         vector = 0;
 756         indicators = ldq_phys(dev->indicators2);
 757         indicators |= 1ULL << vector;
 758         stq_phys(dev->indicators2, indicators);
 759     }
 760
 761     css_conditional_io_interrupt(sch);
 762
 763 }
 764
 765 static unsigned virtio_ccw_get_features(DeviceState *d)
 766 {
 767     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
 768
 769     /* Only the first 32 feature bits are used. */
 770     return dev->host_features[0];
 771 }
 772
 773 static void virtio_ccw_reset(DeviceState *d)
 774 {
 775     VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
 776
 777     virtio_reset(dev->vdev);
 778     css_reset_sch(dev->sch);
 779 }
 780
 781 /**************** Virtio-ccw Bus Device Descriptions *******************/
 782
 783 static Property virtio_ccw_net_properties[] = {
 784     DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
 785     DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]),
 786     DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetCcw, vdev.net_conf),
 787     DEFINE_NIC_PROPERTIES(VirtIONetCcw, vdev.nic_conf),
 788     DEFINE_PROP_END_OF_LIST(),
 789 };
 790
 791 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data)
 792 {
 793     DeviceClass *dc = DEVICE_CLASS(klass);
 794     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
 795
 796     k->init = virtio_ccw_net_init;
 797     k->exit = virtio_ccw_exit;
 798     dc->reset = virtio_ccw_reset;
 799     dc->props = virtio_ccw_net_properties;
 800 }
 801
 802 static const TypeInfo virtio_ccw_net = {
 803     .name          = TYPE_VIRTIO_NET_CCW,
 804     .parent        = TYPE_VIRTIO_CCW_DEVICE,
 805     .instance_size = sizeof(VirtIONetCcw),
 806     .instance_init = virtio_ccw_net_instance_init,
 807     .class_init    = virtio_ccw_net_class_init,
 808 };
 809
 810 static Property virtio_ccw_blk_properties[] = {
 811     DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
 812     DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]),
 813     DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkCcw, blk),
 814     DEFINE_PROP_END_OF_LIST(),
 815 };
 816
 817 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
 818 {
 819     DeviceClass *dc = DEVICE_CLASS(klass);
 820     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
 821
 822     k->init = virtio_ccw_blk_init;
 823     k->exit = virtio_ccw_exit;
 824     dc->reset = virtio_ccw_reset;
 825     dc->props = virtio_ccw_blk_properties;
 826 }
 827
 828 static const TypeInfo virtio_ccw_blk = {
 829     .name          = TYPE_VIRTIO_BLK_CCW,
 830     .parent        = TYPE_VIRTIO_CCW_DEVICE,
 831     .instance_size = sizeof(VirtIOBlkCcw),
 832     .instance_init = virtio_ccw_blk_instance_init,
 833     .class_init    = virtio_ccw_blk_class_init,
 834 };
 835
 836 static Property virtio_ccw_serial_properties[] = {
 837     DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
 838     DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtioSerialCcw, vdev.serial),
 839     DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
 840     DEFINE_PROP_END_OF_LIST(),
 841 };
 842
 843 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data)
 844 {
 845     DeviceClass *dc = DEVICE_CLASS(klass);
 846     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
 847
 848     k->init = virtio_ccw_serial_init;
 849     k->exit = virtio_ccw_exit;
 850     dc->reset = virtio_ccw_reset;
 851     dc->props = virtio_ccw_serial_properties;
 852 }
 853
 854 static const TypeInfo virtio_ccw_serial = {
 855     .name          = TYPE_VIRTIO_SERIAL_CCW,
 856     .parent        = TYPE_VIRTIO_CCW_DEVICE,
 857     .instance_size = sizeof(VirtioSerialCcw),
 858     .instance_init = virtio_ccw_serial_instance_init,
 859     .class_init    = virtio_ccw_serial_class_init,
 860 };
 861
 862 static Property virtio_ccw_balloon_properties[] = {
 863     DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
 864     DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
 865     DEFINE_PROP_END_OF_LIST(),
 866 };
 867
 868 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data)
 869 {
 870     DeviceClass *dc = DEVICE_CLASS(klass);
 871     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
 872
 873     k->init = virtio_ccw_balloon_init;
 874     k->exit = virtio_ccw_exit;
 875     dc->reset = virtio_ccw_reset;
 876     dc->props = virtio_ccw_balloon_properties;
 877 }
 878
 879 static const TypeInfo virtio_ccw_balloon = {
 880     .name          = TYPE_VIRTIO_BALLOON_CCW,
 881     .parent        = TYPE_VIRTIO_CCW_DEVICE,
 882     .instance_size = sizeof(VirtIOBalloonCcw),
 883     .instance_init = virtio_ccw_balloon_instance_init,
 884     .class_init    = virtio_ccw_balloon_class_init,
 885 };
 886
 887 static Property virtio_ccw_scsi_properties[] = {
 888     DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
 889     DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf),
 890     DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features[0]),
 891     DEFINE_PROP_END_OF_LIST(),
 892 };
 893
 894 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data)
 895 {
 896     DeviceClass *dc = DEVICE_CLASS(klass);
 897     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
 898
 899     k->init = virtio_ccw_scsi_init;
 900     k->exit = virtio_ccw_exit;
 901     dc->reset = virtio_ccw_reset;
 902     dc->props = virtio_ccw_scsi_properties;
 903 }
 904
 905 static const TypeInfo virtio_ccw_scsi = {
 906     .name          = TYPE_VIRTIO_SCSI_CCW,
 907     .parent        = TYPE_VIRTIO_CCW_DEVICE,
 908     .instance_size = sizeof(VirtIOSCSICcw),
 909     .instance_init = virtio_ccw_scsi_instance_init,
 910     .class_init    = virtio_ccw_scsi_class_init,
 911 };
 912
 913 #ifdef CONFIG_VHOST_SCSI
 914 static Property vhost_ccw_scsi_properties[] = {
 915     DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
 916     DEFINE_VHOST_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf),
 917     DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
 918     DEFINE_PROP_END_OF_LIST(),
 919 };
 920
 921 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data)
 922 {
 923     DeviceClass *dc = DEVICE_CLASS(klass);
 924     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
 925
 926     k->init = vhost_ccw_scsi_init;
 927     k->exit = virtio_ccw_exit;
 928     dc->reset = virtio_ccw_reset;
 929     dc->props = vhost_ccw_scsi_properties;
 930 }
 931
 932 static const TypeInfo vhost_ccw_scsi = {
 933     .name          = TYPE_VHOST_SCSI_CCW,
 934     .parent        = TYPE_VIRTIO_CCW_DEVICE,
 935     .instance_size = sizeof(VirtIOSCSICcw),
 936     .instance_init = vhost_ccw_scsi_instance_init,
 937     .class_init    = vhost_ccw_scsi_class_init,
 938 };
 939 #endif
 940
 941 static void virtio_ccw_rng_instance_init(Object *obj)
 942 {
 943     VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj);
 944     object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_RNG);
 945     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 946     object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
 947                              (Object **)&dev->vdev.conf.rng, NULL);
 948 }
 949
 950 static Property virtio_ccw_rng_properties[] = {
 951     DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
 952     DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]),
 953     DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGCcw, vdev.conf),
 954     DEFINE_PROP_END_OF_LIST(),
 955 };
 956
 957 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data)
 958 {
 959     DeviceClass *dc = DEVICE_CLASS(klass);
 960     VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
 961
 962     k->init = virtio_ccw_rng_init;
 963     k->exit = virtio_ccw_exit;
 964     dc->reset = virtio_ccw_reset;
 965     dc->props = virtio_ccw_rng_properties;
 966 }
 967
 968 static const TypeInfo virtio_ccw_rng = {
 969     .name          = TYPE_VIRTIO_RNG_CCW,
 970     .parent        = TYPE_VIRTIO_CCW_DEVICE,
 971     .instance_size = sizeof(VirtIORNGCcw),
 972     .instance_init = virtio_ccw_rng_instance_init,
 973     .class_init    = virtio_ccw_rng_class_init,
 974 };
 975
 976 static int virtio_ccw_busdev_init(DeviceState *dev)
 977 {
 978     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
 979     VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
 980
 981     virtio_ccw_bus_new(&_dev->bus, _dev);
 982
 983     return _info->init(_dev);
 984 }
 985
 986 static int virtio_ccw_busdev_exit(DeviceState *dev)
 987 {
 988     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
 989     VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev);
 990
 991     return _info->exit(_dev);
 992 }
 993
 994 static int virtio_ccw_busdev_unplug(DeviceState *dev)
 995 {
 996     VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev;
 997     SubchDev *sch = _dev->sch;
 998
 999     /*
1000      * We should arrive here only for device_del, since we don't support
1001      * direct hot(un)plug of channels, but only through virtio.
1002      */
1003     assert(sch != NULL);
1004     /* Subchannel is now disabled and no longer valid. */
1005     sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA |
1006                                      PMCW_FLAGS_MASK_DNV);
1007
1008     css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0);
1009
1010     qdev_free(dev);
1011     return 0;
1012 }
1013
1014 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data)
1015 {
1016     DeviceClass *dc = DEVICE_CLASS(klass);
1017
1018     dc->init = virtio_ccw_busdev_init;
1019     dc->exit = virtio_ccw_busdev_exit;
1020     dc->unplug = virtio_ccw_busdev_unplug;
1021     dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
1022
1023 }
1024
1025 static const TypeInfo virtio_ccw_device_info = {
1026     .name = TYPE_VIRTIO_CCW_DEVICE,
1027     .parent = TYPE_DEVICE,
1028     .instance_size = sizeof(VirtioCcwDevice),
1029     .class_init = virtio_ccw_device_class_init,
1030     .class_size = sizeof(VirtIOCCWDeviceClass),
1031     .abstract = true,
1032 };
1033
1034 /***************** Virtual-css Bus Bridge Device ********************/
1035 /* Only required to have the virtio bus as child in the system bus */
1036
1037 static int virtual_css_bridge_init(SysBusDevice *dev)
1038 {
1039     /* nothing */
1040     return 0;
1041 }
1042
1043 static void virtual_css_bridge_class_init(ObjectClass *klass, void *data)
1044 {
1045     DeviceClass *dc = DEVICE_CLASS(klass);
1046     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
1047
1048     k->init = virtual_css_bridge_init;
1049     dc->no_user = 1;
1050 }
1051
1052 static const TypeInfo virtual_css_bridge_info = {
1053     .name          = "virtual-css-bridge",
1054     .parent        = TYPE_SYS_BUS_DEVICE,
1055     .instance_size = sizeof(SysBusDevice),
1056     .class_init    = virtual_css_bridge_class_init,
1057 };
1058
1059 /* virtio-ccw-bus */
1060
1061 static void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev)
1062 {
1063     DeviceState *qdev = DEVICE(dev);
1064     BusState *qbus;
1065     char virtio_bus_name[] = "virtio-bus";
1066
1067     qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_CCW_BUS, qdev,
1068                         virtio_bus_name);
1069     qbus = BUS(bus);
1070     qbus->allow_hotplug = 1;
1071 }
1072
1073 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
1074 {
1075     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
1076     BusClass *bus_class = BUS_CLASS(klass);
1077
1078     bus_class->max_dev = 1;
1079     k->notify = virtio_ccw_notify;
1080     k->get_features = virtio_ccw_get_features;
1081 }
1082
1083 static const TypeInfo virtio_ccw_bus_info = {
1084     .name = TYPE_VIRTIO_CCW_BUS,
1085     .parent = TYPE_VIRTIO_BUS,
1086     .instance_size = sizeof(VirtioCcwBusState),
1087     .class_init = virtio_ccw_bus_class_init,
1088 };
1089
1090 static void virtio_ccw_register(void)
1091 {
1092     type_register_static(&virtio_ccw_bus_info);
1093     type_register_static(&virtual_css_bus_info);
1094     type_register_static(&virtio_ccw_device_info);
1095     type_register_static(&virtio_ccw_serial);
1096     type_register_static(&virtio_ccw_blk);
1097     type_register_static(&virtio_ccw_net);
1098     type_register_static(&virtio_ccw_balloon);
1099     type_register_static(&virtio_ccw_scsi);
1100 #ifdef CONFIG_VHOST_SCSI
1101     type_register_static(&vhost_ccw_scsi);
1102 #endif
1103     type_register_static(&virtio_ccw_rng);
1104     type_register_static(&virtual_css_bridge_info);
1105 }
1106
1107 type_init(virtio_ccw_register)