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 "hw/hw.h" 14 #include "sysemu/block-backend.h" 15 #include "sysemu/blockdev.h" 16 #include "sysemu/sysemu.h" 17 #include "net/net.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 "qemu/error-report.h" 24 #include "hw/virtio/virtio-access.h" 25 #include "hw/virtio/virtio-bus.h" 26 #include "hw/s390x/adapter.h" 27 #include "hw/s390x/s390_flic.h" 28 29 #include "ioinst.h" 30 #include "css.h" 31 #include "virtio-ccw.h" 32 #include "trace.h" 33 34 static QTAILQ_HEAD(, IndAddr) indicator_addresses = 35 QTAILQ_HEAD_INITIALIZER(indicator_addresses); 36 37 static IndAddr *get_indicator(hwaddr ind_addr, int len) 38 { 39 IndAddr *indicator; 40 41 QTAILQ_FOREACH(indicator, &indicator_addresses, sibling) { 42 if (indicator->addr == ind_addr) { 43 indicator->refcnt++; 44 return indicator; 45 } 46 } 47 indicator = g_new0(IndAddr, 1); 48 indicator->addr = ind_addr; 49 indicator->len = len; 50 indicator->refcnt = 1; 51 QTAILQ_INSERT_TAIL(&indicator_addresses, indicator, sibling); 52 return indicator; 53 } 54 55 static int s390_io_adapter_map(AdapterInfo *adapter, uint64_t map_addr, 56 bool do_map) 57 { 58 S390FLICState *fs = s390_get_flic(); 59 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 60 61 return fsc->io_adapter_map(fs, adapter->adapter_id, map_addr, do_map); 62 } 63 64 static void release_indicator(AdapterInfo *adapter, IndAddr *indicator) 65 { 66 assert(indicator->refcnt > 0); 67 indicator->refcnt--; 68 if (indicator->refcnt > 0) { 69 return; 70 } 71 QTAILQ_REMOVE(&indicator_addresses, indicator, sibling); 72 if (indicator->map) { 73 s390_io_adapter_map(adapter, indicator->map, false); 74 } 75 g_free(indicator); 76 } 77 78 static int map_indicator(AdapterInfo *adapter, IndAddr *indicator) 79 { 80 int ret; 81 82 if (indicator->map) { 83 return 0; /* already mapped is not an error */ 84 } 85 indicator->map = indicator->addr; 86 ret = s390_io_adapter_map(adapter, indicator->map, true); 87 if ((ret != 0) && (ret != -ENOSYS)) { 88 goto out_err; 89 } 90 return 0; 91 92 out_err: 93 indicator->map = 0; 94 return ret; 95 } 96 97 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 98 VirtioCcwDevice *dev); 99 100 static void virtual_css_bus_reset(BusState *qbus) 101 { 102 /* This should actually be modelled via the generic css */ 103 css_reset(); 104 } 105 106 107 static void virtual_css_bus_class_init(ObjectClass *klass, void *data) 108 { 109 BusClass *k = BUS_CLASS(klass); 110 111 k->reset = virtual_css_bus_reset; 112 } 113 114 static const TypeInfo virtual_css_bus_info = { 115 .name = TYPE_VIRTUAL_CSS_BUS, 116 .parent = TYPE_BUS, 117 .instance_size = sizeof(VirtualCssBus), 118 .class_init = virtual_css_bus_class_init, 119 }; 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 int virtio_ccw_set_guest2host_notifier(VirtioCcwDevice *dev, int n, 133 bool assign, bool set_handler) 134 { 135 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 136 VirtQueue *vq = virtio_get_queue(vdev, n); 137 EventNotifier *notifier = virtio_queue_get_host_notifier(vq); 138 int r = 0; 139 SubchDev *sch = dev->sch; 140 uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid; 141 142 if (assign) { 143 r = event_notifier_init(notifier, 1); 144 if (r < 0) { 145 error_report("%s: unable to init event notifier: %d", __func__, r); 146 return r; 147 } 148 virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler); 149 r = s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); 150 if (r < 0) { 151 error_report("%s: unable to assign ioeventfd: %d", __func__, r); 152 virtio_queue_set_host_notifier_fd_handler(vq, false, false); 153 event_notifier_cleanup(notifier); 154 return r; 155 } 156 } else { 157 virtio_queue_set_host_notifier_fd_handler(vq, false, false); 158 s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); 159 event_notifier_cleanup(notifier); 160 } 161 return r; 162 } 163 164 static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev) 165 { 166 VirtIODevice *vdev; 167 int n, r; 168 169 if (!(dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) || 170 dev->ioeventfd_disabled || 171 dev->ioeventfd_started) { 172 return; 173 } 174 vdev = virtio_bus_get_device(&dev->bus); 175 for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) { 176 if (!virtio_queue_get_num(vdev, n)) { 177 continue; 178 } 179 r = virtio_ccw_set_guest2host_notifier(dev, n, true, true); 180 if (r < 0) { 181 goto assign_error; 182 } 183 } 184 dev->ioeventfd_started = true; 185 return; 186 187 assign_error: 188 while (--n >= 0) { 189 if (!virtio_queue_get_num(vdev, n)) { 190 continue; 191 } 192 r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); 193 assert(r >= 0); 194 } 195 dev->ioeventfd_started = false; 196 /* Disable ioeventfd for this device. */ 197 dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; 198 error_report("%s: failed. Fallback to userspace (slower).", __func__); 199 } 200 201 static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev) 202 { 203 VirtIODevice *vdev; 204 int n, r; 205 206 if (!dev->ioeventfd_started) { 207 return; 208 } 209 vdev = virtio_bus_get_device(&dev->bus); 210 for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) { 211 if (!virtio_queue_get_num(vdev, n)) { 212 continue; 213 } 214 r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); 215 assert(r >= 0); 216 } 217 dev->ioeventfd_started = false; 218 } 219 220 VirtualCssBus *virtual_css_bus_init(void) 221 { 222 VirtualCssBus *cbus; 223 BusState *bus; 224 DeviceState *dev; 225 226 /* Create bridge device */ 227 dev = qdev_create(NULL, "virtual-css-bridge"); 228 qdev_init_nofail(dev); 229 230 /* Create bus on bridge device */ 231 bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css"); 232 cbus = VIRTUAL_CSS_BUS(bus); 233 234 /* Enable hotplugging */ 235 qbus_set_hotplug_handler(bus, dev, &error_abort); 236 237 return cbus; 238 } 239 240 /* Communication blocks used by several channel commands. */ 241 typedef struct VqInfoBlockLegacy { 242 uint64_t queue; 243 uint32_t align; 244 uint16_t index; 245 uint16_t num; 246 } QEMU_PACKED VqInfoBlockLegacy; 247 248 typedef struct VqInfoBlock { 249 uint64_t desc; 250 uint32_t res0; 251 uint16_t index; 252 uint16_t num; 253 uint64_t avail; 254 uint64_t used; 255 } QEMU_PACKED VqInfoBlock; 256 257 typedef struct VqConfigBlock { 258 uint16_t index; 259 uint16_t num_max; 260 } QEMU_PACKED VqConfigBlock; 261 262 typedef struct VirtioFeatDesc { 263 uint32_t features; 264 uint8_t index; 265 } QEMU_PACKED VirtioFeatDesc; 266 267 typedef struct VirtioThinintInfo { 268 hwaddr summary_indicator; 269 hwaddr device_indicator; 270 uint64_t ind_bit; 271 uint8_t isc; 272 } QEMU_PACKED VirtioThinintInfo; 273 274 typedef struct VirtioRevInfo { 275 uint16_t revision; 276 uint16_t length; 277 uint8_t data[0]; 278 } QEMU_PACKED VirtioRevInfo; 279 280 /* Specify where the virtqueues for the subchannel are in guest memory. */ 281 static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info, 282 VqInfoBlockLegacy *linfo) 283 { 284 VirtIODevice *vdev = virtio_ccw_get_vdev(sch); 285 uint16_t index = info ? info->index : linfo->index; 286 uint16_t num = info ? info->num : linfo->num; 287 uint64_t desc = info ? info->desc : linfo->queue; 288 289 if (index >= VIRTIO_CCW_QUEUE_MAX) { 290 return -EINVAL; 291 } 292 293 /* Current code in virtio.c relies on 4K alignment. */ 294 if (linfo && desc && (linfo->align != 4096)) { 295 return -EINVAL; 296 } 297 298 if (!vdev) { 299 return -EINVAL; 300 } 301 302 if (info) { 303 virtio_queue_set_rings(vdev, index, desc, info->avail, info->used); 304 } else { 305 virtio_queue_set_addr(vdev, index, desc); 306 } 307 if (!desc) { 308 virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR); 309 } else { 310 /* Fail if we don't have a big enough queue. */ 311 /* TODO: Add interface to handle vring.num changing */ 312 if (virtio_queue_get_num(vdev, index) > num) { 313 return -EINVAL; 314 } 315 virtio_queue_set_vector(vdev, index, index); 316 } 317 /* tell notify handler in case of config change */ 318 vdev->config_vector = VIRTIO_CCW_QUEUE_MAX; 319 return 0; 320 } 321 322 static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev) 323 { 324 virtio_ccw_stop_ioeventfd(dev); 325 virtio_reset(vdev); 326 if (dev->indicators) { 327 release_indicator(&dev->routes.adapter, dev->indicators); 328 dev->indicators = NULL; 329 } 330 if (dev->indicators2) { 331 release_indicator(&dev->routes.adapter, dev->indicators2); 332 dev->indicators2 = NULL; 333 } 334 if (dev->summary_indicator) { 335 release_indicator(&dev->routes.adapter, dev->summary_indicator); 336 dev->summary_indicator = NULL; 337 } 338 dev->sch->thinint_active = false; 339 } 340 341 static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len, 342 bool is_legacy) 343 { 344 int ret; 345 VqInfoBlock info; 346 VqInfoBlockLegacy linfo; 347 size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info); 348 349 if (check_len) { 350 if (ccw.count != info_len) { 351 return -EINVAL; 352 } 353 } else if (ccw.count < info_len) { 354 /* Can't execute command. */ 355 return -EINVAL; 356 } 357 if (!ccw.cda) { 358 return -EFAULT; 359 } 360 if (is_legacy) { 361 linfo.queue = address_space_ldq_be(&address_space_memory, ccw.cda, 362 MEMTXATTRS_UNSPECIFIED, NULL); 363 linfo.align = address_space_ldl_be(&address_space_memory, 364 ccw.cda + sizeof(linfo.queue), 365 MEMTXATTRS_UNSPECIFIED, 366 NULL); 367 linfo.index = address_space_lduw_be(&address_space_memory, 368 ccw.cda + sizeof(linfo.queue) 369 + sizeof(linfo.align), 370 MEMTXATTRS_UNSPECIFIED, 371 NULL); 372 linfo.num = address_space_lduw_be(&address_space_memory, 373 ccw.cda + sizeof(linfo.queue) 374 + sizeof(linfo.align) 375 + sizeof(linfo.index), 376 MEMTXATTRS_UNSPECIFIED, 377 NULL); 378 ret = virtio_ccw_set_vqs(sch, NULL, &linfo); 379 } else { 380 info.desc = address_space_ldq_be(&address_space_memory, ccw.cda, 381 MEMTXATTRS_UNSPECIFIED, NULL); 382 info.index = address_space_lduw_be(&address_space_memory, 383 ccw.cda + sizeof(info.desc) 384 + sizeof(info.res0), 385 MEMTXATTRS_UNSPECIFIED, NULL); 386 info.num = address_space_lduw_be(&address_space_memory, 387 ccw.cda + sizeof(info.desc) 388 + sizeof(info.res0) 389 + sizeof(info.index), 390 MEMTXATTRS_UNSPECIFIED, NULL); 391 info.avail = address_space_ldq_be(&address_space_memory, 392 ccw.cda + sizeof(info.desc) 393 + sizeof(info.res0) 394 + sizeof(info.index) 395 + sizeof(info.num), 396 MEMTXATTRS_UNSPECIFIED, NULL); 397 info.used = address_space_ldq_be(&address_space_memory, 398 ccw.cda + sizeof(info.desc) 399 + sizeof(info.res0) 400 + sizeof(info.index) 401 + sizeof(info.num) 402 + sizeof(info.avail), 403 MEMTXATTRS_UNSPECIFIED, NULL); 404 ret = virtio_ccw_set_vqs(sch, &info, NULL); 405 } 406 sch->curr_status.scsw.count = 0; 407 return ret; 408 } 409 410 static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) 411 { 412 int ret; 413 VirtioRevInfo revinfo; 414 uint8_t status; 415 VirtioFeatDesc features; 416 void *config; 417 hwaddr indicators; 418 VqConfigBlock vq_config; 419 VirtioCcwDevice *dev = sch->driver_data; 420 VirtIODevice *vdev = virtio_ccw_get_vdev(sch); 421 bool check_len; 422 int len; 423 hwaddr hw_len; 424 VirtioThinintInfo *thinint; 425 426 if (!dev) { 427 return -EINVAL; 428 } 429 430 trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid, 431 ccw.cmd_code); 432 check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC)); 433 434 /* Look at the command. */ 435 switch (ccw.cmd_code) { 436 case CCW_CMD_SET_VQ: 437 ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1); 438 break; 439 case CCW_CMD_VDEV_RESET: 440 virtio_ccw_reset_virtio(dev, vdev); 441 ret = 0; 442 break; 443 case CCW_CMD_READ_FEAT: 444 if (check_len) { 445 if (ccw.count != sizeof(features)) { 446 ret = -EINVAL; 447 break; 448 } 449 } else if (ccw.count < sizeof(features)) { 450 /* Can't execute command. */ 451 ret = -EINVAL; 452 break; 453 } 454 if (!ccw.cda) { 455 ret = -EFAULT; 456 } else { 457 features.index = address_space_ldub(&address_space_memory, 458 ccw.cda 459 + sizeof(features.features), 460 MEMTXATTRS_UNSPECIFIED, 461 NULL); 462 if (features.index == 0) { 463 features.features = (uint32_t)vdev->host_features; 464 } else if (features.index == 1) { 465 features.features = (uint32_t)(vdev->host_features >> 32); 466 /* 467 * Don't offer version 1 to the guest if it did not 468 * negotiate at least revision 1. 469 */ 470 if (dev->revision <= 0) { 471 features.features &= ~(1 << (VIRTIO_F_VERSION_1 - 32)); 472 } 473 } else { 474 /* Return zeroes if the guest supports more feature bits. */ 475 features.features = 0; 476 } 477 address_space_stl_le(&address_space_memory, ccw.cda, 478 features.features, MEMTXATTRS_UNSPECIFIED, 479 NULL); 480 sch->curr_status.scsw.count = ccw.count - sizeof(features); 481 ret = 0; 482 } 483 break; 484 case CCW_CMD_WRITE_FEAT: 485 if (check_len) { 486 if (ccw.count != sizeof(features)) { 487 ret = -EINVAL; 488 break; 489 } 490 } else if (ccw.count < sizeof(features)) { 491 /* Can't execute command. */ 492 ret = -EINVAL; 493 break; 494 } 495 if (!ccw.cda) { 496 ret = -EFAULT; 497 } else { 498 features.index = address_space_ldub(&address_space_memory, 499 ccw.cda 500 + sizeof(features.features), 501 MEMTXATTRS_UNSPECIFIED, 502 NULL); 503 features.features = address_space_ldl_le(&address_space_memory, 504 ccw.cda, 505 MEMTXATTRS_UNSPECIFIED, 506 NULL); 507 if (features.index == 0) { 508 virtio_set_features(vdev, 509 (vdev->guest_features & 0xffffffff00000000ULL) | 510 features.features); 511 } else if (features.index == 1) { 512 /* 513 * The guest should not set version 1 if it didn't 514 * negotiate a revision >= 1. 515 */ 516 if (dev->revision <= 0) { 517 features.features &= ~(1 << (VIRTIO_F_VERSION_1 - 32)); 518 } 519 virtio_set_features(vdev, 520 (vdev->guest_features & 0x00000000ffffffffULL) | 521 ((uint64_t)features.features << 32)); 522 } else { 523 /* 524 * If the guest supports more feature bits, assert that it 525 * passes us zeroes for those we don't support. 526 */ 527 if (features.features) { 528 fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n", 529 features.index, features.features); 530 /* XXX: do a unit check here? */ 531 } 532 } 533 sch->curr_status.scsw.count = ccw.count - sizeof(features); 534 ret = 0; 535 } 536 break; 537 case CCW_CMD_READ_CONF: 538 if (check_len) { 539 if (ccw.count > vdev->config_len) { 540 ret = -EINVAL; 541 break; 542 } 543 } 544 len = MIN(ccw.count, vdev->config_len); 545 if (!ccw.cda) { 546 ret = -EFAULT; 547 } else { 548 virtio_bus_get_vdev_config(&dev->bus, vdev->config); 549 /* XXX config space endianness */ 550 cpu_physical_memory_write(ccw.cda, vdev->config, len); 551 sch->curr_status.scsw.count = ccw.count - len; 552 ret = 0; 553 } 554 break; 555 case CCW_CMD_WRITE_CONF: 556 if (check_len) { 557 if (ccw.count > vdev->config_len) { 558 ret = -EINVAL; 559 break; 560 } 561 } 562 len = MIN(ccw.count, vdev->config_len); 563 hw_len = len; 564 if (!ccw.cda) { 565 ret = -EFAULT; 566 } else { 567 config = cpu_physical_memory_map(ccw.cda, &hw_len, 0); 568 if (!config) { 569 ret = -EFAULT; 570 } else { 571 len = hw_len; 572 /* XXX config space endianness */ 573 memcpy(vdev->config, config, len); 574 cpu_physical_memory_unmap(config, hw_len, 0, hw_len); 575 virtio_bus_set_vdev_config(&dev->bus, vdev->config); 576 sch->curr_status.scsw.count = ccw.count - len; 577 ret = 0; 578 } 579 } 580 break; 581 case CCW_CMD_WRITE_STATUS: 582 if (check_len) { 583 if (ccw.count != sizeof(status)) { 584 ret = -EINVAL; 585 break; 586 } 587 } else if (ccw.count < sizeof(status)) { 588 /* Can't execute command. */ 589 ret = -EINVAL; 590 break; 591 } 592 if (!ccw.cda) { 593 ret = -EFAULT; 594 } else { 595 status = address_space_ldub(&address_space_memory, ccw.cda, 596 MEMTXATTRS_UNSPECIFIED, NULL); 597 if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) { 598 virtio_ccw_stop_ioeventfd(dev); 599 } 600 if (virtio_set_status(vdev, status) == 0) { 601 if (vdev->status == 0) { 602 virtio_ccw_reset_virtio(dev, vdev); 603 } 604 if (status & VIRTIO_CONFIG_S_DRIVER_OK) { 605 virtio_ccw_start_ioeventfd(dev); 606 } 607 sch->curr_status.scsw.count = ccw.count - sizeof(status); 608 ret = 0; 609 } else { 610 /* Trigger a command reject. */ 611 ret = -ENOSYS; 612 } 613 } 614 break; 615 case CCW_CMD_SET_IND: 616 if (check_len) { 617 if (ccw.count != sizeof(indicators)) { 618 ret = -EINVAL; 619 break; 620 } 621 } else if (ccw.count < sizeof(indicators)) { 622 /* Can't execute command. */ 623 ret = -EINVAL; 624 break; 625 } 626 if (sch->thinint_active) { 627 /* Trigger a command reject. */ 628 ret = -ENOSYS; 629 break; 630 } 631 if (!ccw.cda) { 632 ret = -EFAULT; 633 } else { 634 indicators = address_space_ldq_be(&address_space_memory, ccw.cda, 635 MEMTXATTRS_UNSPECIFIED, NULL); 636 dev->indicators = get_indicator(indicators, sizeof(uint64_t)); 637 sch->curr_status.scsw.count = ccw.count - sizeof(indicators); 638 ret = 0; 639 } 640 break; 641 case CCW_CMD_SET_CONF_IND: 642 if (check_len) { 643 if (ccw.count != sizeof(indicators)) { 644 ret = -EINVAL; 645 break; 646 } 647 } else if (ccw.count < sizeof(indicators)) { 648 /* Can't execute command. */ 649 ret = -EINVAL; 650 break; 651 } 652 if (!ccw.cda) { 653 ret = -EFAULT; 654 } else { 655 indicators = address_space_ldq_be(&address_space_memory, ccw.cda, 656 MEMTXATTRS_UNSPECIFIED, NULL); 657 dev->indicators2 = get_indicator(indicators, sizeof(uint64_t)); 658 sch->curr_status.scsw.count = ccw.count - sizeof(indicators); 659 ret = 0; 660 } 661 break; 662 case CCW_CMD_READ_VQ_CONF: 663 if (check_len) { 664 if (ccw.count != sizeof(vq_config)) { 665 ret = -EINVAL; 666 break; 667 } 668 } else if (ccw.count < sizeof(vq_config)) { 669 /* Can't execute command. */ 670 ret = -EINVAL; 671 break; 672 } 673 if (!ccw.cda) { 674 ret = -EFAULT; 675 } else { 676 vq_config.index = address_space_lduw_be(&address_space_memory, 677 ccw.cda, 678 MEMTXATTRS_UNSPECIFIED, 679 NULL); 680 if (vq_config.index >= VIRTIO_CCW_QUEUE_MAX) { 681 ret = -EINVAL; 682 break; 683 } 684 vq_config.num_max = virtio_queue_get_num(vdev, 685 vq_config.index); 686 address_space_stw_be(&address_space_memory, 687 ccw.cda + sizeof(vq_config.index), 688 vq_config.num_max, 689 MEMTXATTRS_UNSPECIFIED, 690 NULL); 691 sch->curr_status.scsw.count = ccw.count - sizeof(vq_config); 692 ret = 0; 693 } 694 break; 695 case CCW_CMD_SET_IND_ADAPTER: 696 if (check_len) { 697 if (ccw.count != sizeof(*thinint)) { 698 ret = -EINVAL; 699 break; 700 } 701 } else if (ccw.count < sizeof(*thinint)) { 702 /* Can't execute command. */ 703 ret = -EINVAL; 704 break; 705 } 706 len = sizeof(*thinint); 707 hw_len = len; 708 if (!ccw.cda) { 709 ret = -EFAULT; 710 } else if (dev->indicators && !sch->thinint_active) { 711 /* Trigger a command reject. */ 712 ret = -ENOSYS; 713 } else { 714 thinint = cpu_physical_memory_map(ccw.cda, &hw_len, 0); 715 if (!thinint) { 716 ret = -EFAULT; 717 } else { 718 uint64_t ind_bit = ldq_be_p(&thinint->ind_bit); 719 720 len = hw_len; 721 dev->summary_indicator = 722 get_indicator(ldq_be_p(&thinint->summary_indicator), 723 sizeof(uint8_t)); 724 dev->indicators = 725 get_indicator(ldq_be_p(&thinint->device_indicator), 726 ind_bit / 8 + 1); 727 dev->thinint_isc = thinint->isc; 728 dev->routes.adapter.ind_offset = ind_bit; 729 dev->routes.adapter.summary_offset = 7; 730 cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len); 731 ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, 732 dev->thinint_isc, true, false, 733 &dev->routes.adapter.adapter_id); 734 assert(ret == 0); 735 sch->thinint_active = ((dev->indicators != NULL) && 736 (dev->summary_indicator != NULL)); 737 sch->curr_status.scsw.count = ccw.count - len; 738 ret = 0; 739 } 740 } 741 break; 742 case CCW_CMD_SET_VIRTIO_REV: 743 len = sizeof(revinfo); 744 if (ccw.count < len) { 745 ret = -EINVAL; 746 break; 747 } 748 if (!ccw.cda) { 749 ret = -EFAULT; 750 break; 751 } 752 revinfo.revision = 753 address_space_lduw_be(&address_space_memory, ccw.cda, 754 MEMTXATTRS_UNSPECIFIED, NULL); 755 revinfo.length = 756 address_space_lduw_be(&address_space_memory, 757 ccw.cda + sizeof(revinfo.revision), 758 MEMTXATTRS_UNSPECIFIED, NULL); 759 if (ccw.count < len + revinfo.length || 760 (check_len && ccw.count > len + revinfo.length)) { 761 ret = -EINVAL; 762 break; 763 } 764 /* 765 * Once we start to support revisions with additional data, we'll 766 * need to fetch it here. Nothing to do for now, though. 767 */ 768 if (dev->revision >= 0 || 769 revinfo.revision > virtio_ccw_rev_max(vdev)) { 770 ret = -ENOSYS; 771 break; 772 } 773 ret = 0; 774 dev->revision = revinfo.revision; 775 break; 776 default: 777 ret = -ENOSYS; 778 break; 779 } 780 return ret; 781 } 782 783 static void virtio_sch_disable_cb(SubchDev *sch) 784 { 785 VirtioCcwDevice *dev = sch->driver_data; 786 787 dev->revision = -1; 788 } 789 790 static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp) 791 { 792 unsigned int cssid = 0; 793 unsigned int ssid = 0; 794 unsigned int schid; 795 unsigned int devno; 796 bool have_devno = false; 797 bool found = false; 798 SubchDev *sch; 799 int num; 800 Error *err = NULL; 801 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 802 803 sch = g_malloc0(sizeof(SubchDev)); 804 805 sch->driver_data = dev; 806 dev->sch = sch; 807 808 dev->indicators = NULL; 809 810 /* Initialize subchannel structure. */ 811 sch->channel_prog = 0x0; 812 sch->last_cmd_valid = false; 813 sch->thinint_active = false; 814 /* 815 * Use a device number if provided. Otherwise, fall back to subchannel 816 * number. 817 */ 818 if (dev->bus_id) { 819 num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno); 820 if (num == 3) { 821 if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) { 822 error_setg(errp, "Invalid cssid or ssid: cssid %x, ssid %x", 823 cssid, ssid); 824 goto out_err; 825 } 826 /* Enforce use of virtual cssid. */ 827 if (cssid != VIRTUAL_CSSID) { 828 error_setg(errp, "cssid %x not valid for virtio devices", 829 cssid); 830 goto out_err; 831 } 832 if (css_devno_used(cssid, ssid, devno)) { 833 error_setg(errp, "Device %x.%x.%04x already exists", 834 cssid, ssid, devno); 835 goto out_err; 836 } 837 sch->cssid = cssid; 838 sch->ssid = ssid; 839 sch->devno = devno; 840 have_devno = true; 841 } else { 842 error_setg(errp, "Malformed devno parameter '%s'", dev->bus_id); 843 goto out_err; 844 } 845 } 846 847 /* Find the next free id. */ 848 if (have_devno) { 849 for (schid = 0; schid <= MAX_SCHID; schid++) { 850 if (!css_find_subch(1, cssid, ssid, schid)) { 851 sch->schid = schid; 852 css_subch_assign(cssid, ssid, schid, devno, sch); 853 found = true; 854 break; 855 } 856 } 857 if (!found) { 858 error_setg(errp, "No free subchannel found for %x.%x.%04x", 859 cssid, ssid, devno); 860 goto out_err; 861 } 862 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 863 "user-configured"); 864 } else { 865 cssid = VIRTUAL_CSSID; 866 for (ssid = 0; ssid <= MAX_SSID; ssid++) { 867 for (schid = 0; schid <= MAX_SCHID; schid++) { 868 if (!css_find_subch(1, cssid, ssid, schid)) { 869 sch->cssid = cssid; 870 sch->ssid = ssid; 871 sch->schid = schid; 872 devno = schid; 873 /* 874 * If the devno is already taken, look further in this 875 * subchannel set. 876 */ 877 while (css_devno_used(cssid, ssid, devno)) { 878 if (devno == MAX_SCHID) { 879 devno = 0; 880 } else if (devno == schid - 1) { 881 error_setg(errp, "No free devno found"); 882 goto out_err; 883 } else { 884 devno++; 885 } 886 } 887 sch->devno = devno; 888 css_subch_assign(cssid, ssid, schid, devno, sch); 889 found = true; 890 break; 891 } 892 } 893 if (found) { 894 break; 895 } 896 } 897 if (!found) { 898 error_setg(errp, "Virtual channel subsystem is full!"); 899 goto out_err; 900 } 901 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 902 "auto-configured"); 903 } 904 905 /* Build initial schib. */ 906 css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE); 907 908 sch->ccw_cb = virtio_ccw_cb; 909 sch->disable_cb = virtio_sch_disable_cb; 910 911 /* Build senseid data. */ 912 memset(&sch->id, 0, sizeof(SenseId)); 913 sch->id.reserved = 0xff; 914 sch->id.cu_type = VIRTIO_CCW_CU_TYPE; 915 916 dev->revision = -1; 917 918 if (k->realize) { 919 k->realize(dev, &err); 920 } 921 if (err) { 922 error_propagate(errp, err); 923 css_subch_assign(cssid, ssid, schid, devno, NULL); 924 goto out_err; 925 } 926 927 return; 928 929 out_err: 930 dev->sch = NULL; 931 g_free(sch); 932 } 933 934 static int virtio_ccw_exit(VirtioCcwDevice *dev) 935 { 936 SubchDev *sch = dev->sch; 937 938 if (sch) { 939 css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); 940 g_free(sch); 941 } 942 if (dev->indicators) { 943 release_indicator(&dev->routes.adapter, dev->indicators); 944 dev->indicators = NULL; 945 } 946 return 0; 947 } 948 949 static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp) 950 { 951 DeviceState *qdev = DEVICE(ccw_dev); 952 VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); 953 DeviceState *vdev = DEVICE(&dev->vdev); 954 Error *err = NULL; 955 956 virtio_net_set_netclient_name(&dev->vdev, qdev->id, 957 object_get_typename(OBJECT(qdev))); 958 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 959 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 960 if (err) { 961 error_propagate(errp, err); 962 } 963 } 964 965 static void virtio_ccw_net_instance_init(Object *obj) 966 { 967 VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); 968 969 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 970 TYPE_VIRTIO_NET); 971 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 972 "bootindex", &error_abort); 973 } 974 975 static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp) 976 { 977 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); 978 DeviceState *vdev = DEVICE(&dev->vdev); 979 Error *err = NULL; 980 981 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 982 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 983 if (err) { 984 error_propagate(errp, err); 985 } 986 } 987 988 static void virtio_ccw_blk_instance_init(Object *obj) 989 { 990 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); 991 992 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 993 TYPE_VIRTIO_BLK); 994 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread", 995 &error_abort); 996 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 997 "bootindex", &error_abort); 998 } 999 1000 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1001 { 1002 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); 1003 DeviceState *vdev = DEVICE(&dev->vdev); 1004 DeviceState *proxy = DEVICE(ccw_dev); 1005 Error *err = NULL; 1006 char *bus_name; 1007 1008 /* 1009 * For command line compatibility, this sets the virtio-serial-device bus 1010 * name as before. 1011 */ 1012 if (proxy->id) { 1013 bus_name = g_strdup_printf("%s.0", proxy->id); 1014 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 1015 g_free(bus_name); 1016 } 1017 1018 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1019 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1020 if (err) { 1021 error_propagate(errp, err); 1022 } 1023 } 1024 1025 1026 static void virtio_ccw_serial_instance_init(Object *obj) 1027 { 1028 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); 1029 1030 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1031 TYPE_VIRTIO_SERIAL); 1032 } 1033 1034 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1035 { 1036 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); 1037 DeviceState *vdev = DEVICE(&dev->vdev); 1038 Error *err = NULL; 1039 1040 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1041 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1042 if (err) { 1043 error_propagate(errp, err); 1044 } 1045 } 1046 1047 static void virtio_ccw_balloon_instance_init(Object *obj) 1048 { 1049 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); 1050 1051 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1052 TYPE_VIRTIO_BALLOON); 1053 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev), 1054 "guest-stats", &error_abort); 1055 object_property_add_alias(obj, "guest-stats-polling-interval", 1056 OBJECT(&dev->vdev), 1057 "guest-stats-polling-interval", &error_abort); 1058 } 1059 1060 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1061 { 1062 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); 1063 DeviceState *vdev = DEVICE(&dev->vdev); 1064 DeviceState *qdev = DEVICE(ccw_dev); 1065 Error *err = NULL; 1066 char *bus_name; 1067 1068 /* 1069 * For command line compatibility, this sets the virtio-scsi-device bus 1070 * name as before. 1071 */ 1072 if (qdev->id) { 1073 bus_name = g_strdup_printf("%s.0", qdev->id); 1074 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 1075 g_free(bus_name); 1076 } 1077 1078 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1079 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1080 if (err) { 1081 error_propagate(errp, err); 1082 } 1083 } 1084 1085 static void virtio_ccw_scsi_instance_init(Object *obj) 1086 { 1087 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); 1088 1089 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1090 TYPE_VIRTIO_SCSI); 1091 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread", 1092 &error_abort); 1093 } 1094 1095 #ifdef CONFIG_VHOST_SCSI 1096 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1097 { 1098 VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); 1099 DeviceState *vdev = DEVICE(&dev->vdev); 1100 Error *err = NULL; 1101 1102 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1103 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1104 if (err) { 1105 error_propagate(errp, err); 1106 } 1107 } 1108 1109 static void vhost_ccw_scsi_instance_init(Object *obj) 1110 { 1111 VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); 1112 1113 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1114 TYPE_VHOST_SCSI); 1115 } 1116 #endif 1117 1118 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1119 { 1120 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); 1121 DeviceState *vdev = DEVICE(&dev->vdev); 1122 Error *err = NULL; 1123 1124 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1125 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1126 if (err) { 1127 error_propagate(errp, err); 1128 return; 1129 } 1130 1131 object_property_set_link(OBJECT(dev), 1132 OBJECT(dev->vdev.conf.rng), "rng", 1133 NULL); 1134 } 1135 1136 /* DeviceState to VirtioCcwDevice. Note: used on datapath, 1137 * be careful and test performance if you change this. 1138 */ 1139 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) 1140 { 1141 return container_of(d, VirtioCcwDevice, parent_obj); 1142 } 1143 1144 static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc, 1145 uint8_t to_be_set) 1146 { 1147 uint8_t ind_old, ind_new; 1148 hwaddr len = 1; 1149 uint8_t *ind_addr; 1150 1151 ind_addr = cpu_physical_memory_map(ind_loc, &len, 1); 1152 if (!ind_addr) { 1153 error_report("%s(%x.%x.%04x): unable to access indicator", 1154 __func__, sch->cssid, sch->ssid, sch->schid); 1155 return -1; 1156 } 1157 do { 1158 ind_old = *ind_addr; 1159 ind_new = ind_old | to_be_set; 1160 } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old); 1161 cpu_physical_memory_unmap(ind_addr, len, 1, len); 1162 1163 return ind_old; 1164 } 1165 1166 static void virtio_ccw_notify(DeviceState *d, uint16_t vector) 1167 { 1168 VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); 1169 SubchDev *sch = dev->sch; 1170 uint64_t indicators; 1171 1172 if (vector >= 128) { 1173 return; 1174 } 1175 1176 if (vector < VIRTIO_CCW_QUEUE_MAX) { 1177 if (!dev->indicators) { 1178 return; 1179 } 1180 if (sch->thinint_active) { 1181 /* 1182 * In the adapter interrupt case, indicators points to a 1183 * memory area that may be (way) larger than 64 bit and 1184 * ind_bit indicates the start of the indicators in a big 1185 * endian notation. 1186 */ 1187 uint64_t ind_bit = dev->routes.adapter.ind_offset; 1188 1189 virtio_set_ind_atomic(sch, dev->indicators->addr + 1190 (ind_bit + vector) / 8, 1191 0x80 >> ((ind_bit + vector) % 8)); 1192 if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr, 1193 0x01)) { 1194 css_adapter_interrupt(dev->thinint_isc); 1195 } 1196 } else { 1197 indicators = address_space_ldq(&address_space_memory, 1198 dev->indicators->addr, 1199 MEMTXATTRS_UNSPECIFIED, 1200 NULL); 1201 indicators |= 1ULL << vector; 1202 address_space_stq(&address_space_memory, dev->indicators->addr, 1203 indicators, MEMTXATTRS_UNSPECIFIED, NULL); 1204 css_conditional_io_interrupt(sch); 1205 } 1206 } else { 1207 if (!dev->indicators2) { 1208 return; 1209 } 1210 vector = 0; 1211 indicators = address_space_ldq(&address_space_memory, 1212 dev->indicators2->addr, 1213 MEMTXATTRS_UNSPECIFIED, 1214 NULL); 1215 indicators |= 1ULL << vector; 1216 address_space_stq(&address_space_memory, dev->indicators2->addr, 1217 indicators, MEMTXATTRS_UNSPECIFIED, NULL); 1218 css_conditional_io_interrupt(sch); 1219 } 1220 } 1221 1222 static void virtio_ccw_reset(DeviceState *d) 1223 { 1224 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1225 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1226 1227 virtio_ccw_reset_virtio(dev, vdev); 1228 css_reset_sch(dev->sch); 1229 } 1230 1231 static void virtio_ccw_vmstate_change(DeviceState *d, bool running) 1232 { 1233 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1234 1235 if (running) { 1236 virtio_ccw_start_ioeventfd(dev); 1237 } else { 1238 virtio_ccw_stop_ioeventfd(dev); 1239 } 1240 } 1241 1242 static bool virtio_ccw_query_guest_notifiers(DeviceState *d) 1243 { 1244 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1245 1246 return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA); 1247 } 1248 1249 static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign) 1250 { 1251 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1252 1253 /* Stop using the generic ioeventfd, we are doing eventfd handling 1254 * ourselves below */ 1255 dev->ioeventfd_disabled = assign; 1256 if (assign) { 1257 virtio_ccw_stop_ioeventfd(dev); 1258 } 1259 return virtio_ccw_set_guest2host_notifier(dev, n, assign, false); 1260 } 1261 1262 static int virtio_ccw_get_mappings(VirtioCcwDevice *dev) 1263 { 1264 int r; 1265 1266 if (!dev->sch->thinint_active) { 1267 return -EINVAL; 1268 } 1269 1270 r = map_indicator(&dev->routes.adapter, dev->summary_indicator); 1271 if (r) { 1272 return r; 1273 } 1274 r = map_indicator(&dev->routes.adapter, dev->indicators); 1275 if (r) { 1276 return r; 1277 } 1278 dev->routes.adapter.summary_addr = dev->summary_indicator->map; 1279 dev->routes.adapter.ind_addr = dev->indicators->map; 1280 1281 return 0; 1282 } 1283 1284 static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs) 1285 { 1286 int i; 1287 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1288 int ret; 1289 S390FLICState *fs = s390_get_flic(); 1290 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 1291 1292 ret = virtio_ccw_get_mappings(dev); 1293 if (ret) { 1294 return ret; 1295 } 1296 for (i = 0; i < nvqs; i++) { 1297 if (!virtio_queue_get_num(vdev, i)) { 1298 break; 1299 } 1300 } 1301 dev->routes.num_routes = i; 1302 return fsc->add_adapter_routes(fs, &dev->routes); 1303 } 1304 1305 static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs) 1306 { 1307 S390FLICState *fs = s390_get_flic(); 1308 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 1309 1310 fsc->release_adapter_routes(fs, &dev->routes); 1311 } 1312 1313 static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n) 1314 { 1315 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1316 VirtQueue *vq = virtio_get_queue(vdev, n); 1317 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1318 1319 return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL, 1320 dev->routes.gsi[n]); 1321 } 1322 1323 static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n) 1324 { 1325 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1326 VirtQueue *vq = virtio_get_queue(vdev, n); 1327 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1328 int ret; 1329 1330 ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier, 1331 dev->routes.gsi[n]); 1332 assert(ret == 0); 1333 } 1334 1335 static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n, 1336 bool assign, bool with_irqfd) 1337 { 1338 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1339 VirtQueue *vq = virtio_get_queue(vdev, n); 1340 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1341 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); 1342 1343 if (assign) { 1344 int r = event_notifier_init(notifier, 0); 1345 1346 if (r < 0) { 1347 return r; 1348 } 1349 virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); 1350 if (with_irqfd) { 1351 r = virtio_ccw_add_irqfd(dev, n); 1352 if (r) { 1353 virtio_queue_set_guest_notifier_fd_handler(vq, false, 1354 with_irqfd); 1355 return r; 1356 } 1357 } 1358 /* 1359 * We do not support individual masking for channel devices, so we 1360 * need to manually trigger any guest masking callbacks here. 1361 */ 1362 if (k->guest_notifier_mask) { 1363 k->guest_notifier_mask(vdev, n, false); 1364 } 1365 /* get lost events and re-inject */ 1366 if (k->guest_notifier_pending && 1367 k->guest_notifier_pending(vdev, n)) { 1368 event_notifier_set(notifier); 1369 } 1370 } else { 1371 if (k->guest_notifier_mask) { 1372 k->guest_notifier_mask(vdev, n, true); 1373 } 1374 if (with_irqfd) { 1375 virtio_ccw_remove_irqfd(dev, n); 1376 } 1377 virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); 1378 event_notifier_cleanup(notifier); 1379 } 1380 return 0; 1381 } 1382 1383 static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs, 1384 bool assigned) 1385 { 1386 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1387 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1388 bool with_irqfd = dev->sch->thinint_active && kvm_irqfds_enabled(); 1389 int r, n; 1390 1391 if (with_irqfd && assigned) { 1392 /* irq routes need to be set up before assigning irqfds */ 1393 r = virtio_ccw_setup_irqroutes(dev, nvqs); 1394 if (r < 0) { 1395 goto irqroute_error; 1396 } 1397 } 1398 for (n = 0; n < nvqs; n++) { 1399 if (!virtio_queue_get_num(vdev, n)) { 1400 break; 1401 } 1402 r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd); 1403 if (r < 0) { 1404 goto assign_error; 1405 } 1406 } 1407 if (with_irqfd && !assigned) { 1408 /* release irq routes after irqfds have been released */ 1409 virtio_ccw_release_irqroutes(dev, nvqs); 1410 } 1411 return 0; 1412 1413 assign_error: 1414 while (--n >= 0) { 1415 virtio_ccw_set_guest_notifier(dev, n, !assigned, false); 1416 } 1417 irqroute_error: 1418 if (with_irqfd && assigned) { 1419 virtio_ccw_release_irqroutes(dev, nvqs); 1420 } 1421 return r; 1422 } 1423 1424 static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f) 1425 { 1426 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1427 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1428 1429 qemu_put_be16(f, virtio_queue_vector(vdev, n)); 1430 } 1431 1432 static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f) 1433 { 1434 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1435 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1436 uint16_t vector; 1437 1438 qemu_get_be16s(f, &vector); 1439 virtio_queue_set_vector(vdev, n , vector); 1440 1441 return 0; 1442 } 1443 1444 static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f) 1445 { 1446 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1447 SubchDev *s = dev->sch; 1448 VirtIODevice *vdev = virtio_ccw_get_vdev(s); 1449 1450 subch_device_save(s, f); 1451 if (dev->indicators != NULL) { 1452 qemu_put_be32(f, dev->indicators->len); 1453 qemu_put_be64(f, dev->indicators->addr); 1454 } else { 1455 qemu_put_be32(f, 0); 1456 qemu_put_be64(f, 0UL); 1457 } 1458 if (dev->indicators2 != NULL) { 1459 qemu_put_be32(f, dev->indicators2->len); 1460 qemu_put_be64(f, dev->indicators2->addr); 1461 } else { 1462 qemu_put_be32(f, 0); 1463 qemu_put_be64(f, 0UL); 1464 } 1465 if (dev->summary_indicator != NULL) { 1466 qemu_put_be32(f, dev->summary_indicator->len); 1467 qemu_put_be64(f, dev->summary_indicator->addr); 1468 } else { 1469 qemu_put_be32(f, 0); 1470 qemu_put_be64(f, 0UL); 1471 } 1472 qemu_put_be16(f, vdev->config_vector); 1473 qemu_put_be64(f, dev->routes.adapter.ind_offset); 1474 qemu_put_byte(f, dev->thinint_isc); 1475 qemu_put_be32(f, dev->revision); 1476 } 1477 1478 static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f) 1479 { 1480 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1481 SubchDev *s = dev->sch; 1482 VirtIODevice *vdev = virtio_ccw_get_vdev(s); 1483 int len; 1484 1485 s->driver_data = dev; 1486 subch_device_load(s, f); 1487 len = qemu_get_be32(f); 1488 if (len != 0) { 1489 dev->indicators = get_indicator(qemu_get_be64(f), len); 1490 } else { 1491 qemu_get_be64(f); 1492 dev->indicators = NULL; 1493 } 1494 len = qemu_get_be32(f); 1495 if (len != 0) { 1496 dev->indicators2 = get_indicator(qemu_get_be64(f), len); 1497 } else { 1498 qemu_get_be64(f); 1499 dev->indicators2 = NULL; 1500 } 1501 len = qemu_get_be32(f); 1502 if (len != 0) { 1503 dev->summary_indicator = get_indicator(qemu_get_be64(f), len); 1504 } else { 1505 qemu_get_be64(f); 1506 dev->summary_indicator = NULL; 1507 } 1508 qemu_get_be16s(f, &vdev->config_vector); 1509 dev->routes.adapter.ind_offset = qemu_get_be64(f); 1510 dev->thinint_isc = qemu_get_byte(f); 1511 dev->revision = qemu_get_be32(f); 1512 if (s->thinint_active) { 1513 return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, 1514 dev->thinint_isc, true, false, 1515 &dev->routes.adapter.adapter_id); 1516 } 1517 1518 return 0; 1519 } 1520 1521 /* This is called by virtio-bus just after the device is plugged. */ 1522 static void virtio_ccw_device_plugged(DeviceState *d, Error **errp) 1523 { 1524 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1525 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1526 SubchDev *sch = dev->sch; 1527 int n = virtio_get_num_queues(vdev); 1528 1529 if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) { 1530 error_setg(errp, "The nubmer of virtqueues %d " 1531 "exceeds ccw limit %d", n, 1532 VIRTIO_CCW_QUEUE_MAX); 1533 return; 1534 } 1535 1536 if (!kvm_eventfds_enabled()) { 1537 dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; 1538 } 1539 1540 sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus); 1541 1542 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1543 d->hotplugged, 1); 1544 } 1545 1546 static void virtio_ccw_device_unplugged(DeviceState *d) 1547 { 1548 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1549 1550 virtio_ccw_stop_ioeventfd(dev); 1551 } 1552 /**************** Virtio-ccw Bus Device Descriptions *******************/ 1553 1554 static Property virtio_ccw_net_properties[] = { 1555 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1556 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1557 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1558 DEFINE_PROP_END_OF_LIST(), 1559 }; 1560 1561 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) 1562 { 1563 DeviceClass *dc = DEVICE_CLASS(klass); 1564 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1565 1566 k->realize = virtio_ccw_net_realize; 1567 k->exit = virtio_ccw_exit; 1568 dc->reset = virtio_ccw_reset; 1569 dc->props = virtio_ccw_net_properties; 1570 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); 1571 } 1572 1573 static const TypeInfo virtio_ccw_net = { 1574 .name = TYPE_VIRTIO_NET_CCW, 1575 .parent = TYPE_VIRTIO_CCW_DEVICE, 1576 .instance_size = sizeof(VirtIONetCcw), 1577 .instance_init = virtio_ccw_net_instance_init, 1578 .class_init = virtio_ccw_net_class_init, 1579 }; 1580 1581 static Property virtio_ccw_blk_properties[] = { 1582 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1583 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1584 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1585 DEFINE_PROP_END_OF_LIST(), 1586 }; 1587 1588 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) 1589 { 1590 DeviceClass *dc = DEVICE_CLASS(klass); 1591 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1592 1593 k->realize = virtio_ccw_blk_realize; 1594 k->exit = virtio_ccw_exit; 1595 dc->reset = virtio_ccw_reset; 1596 dc->props = virtio_ccw_blk_properties; 1597 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1598 } 1599 1600 static const TypeInfo virtio_ccw_blk = { 1601 .name = TYPE_VIRTIO_BLK_CCW, 1602 .parent = TYPE_VIRTIO_CCW_DEVICE, 1603 .instance_size = sizeof(VirtIOBlkCcw), 1604 .instance_init = virtio_ccw_blk_instance_init, 1605 .class_init = virtio_ccw_blk_class_init, 1606 }; 1607 1608 static Property virtio_ccw_serial_properties[] = { 1609 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1610 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1611 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1612 DEFINE_PROP_END_OF_LIST(), 1613 }; 1614 1615 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) 1616 { 1617 DeviceClass *dc = DEVICE_CLASS(klass); 1618 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1619 1620 k->realize = virtio_ccw_serial_realize; 1621 k->exit = virtio_ccw_exit; 1622 dc->reset = virtio_ccw_reset; 1623 dc->props = virtio_ccw_serial_properties; 1624 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 1625 } 1626 1627 static const TypeInfo virtio_ccw_serial = { 1628 .name = TYPE_VIRTIO_SERIAL_CCW, 1629 .parent = TYPE_VIRTIO_CCW_DEVICE, 1630 .instance_size = sizeof(VirtioSerialCcw), 1631 .instance_init = virtio_ccw_serial_instance_init, 1632 .class_init = virtio_ccw_serial_class_init, 1633 }; 1634 1635 static Property virtio_ccw_balloon_properties[] = { 1636 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1637 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1638 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1639 DEFINE_PROP_END_OF_LIST(), 1640 }; 1641 1642 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) 1643 { 1644 DeviceClass *dc = DEVICE_CLASS(klass); 1645 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1646 1647 k->realize = virtio_ccw_balloon_realize; 1648 k->exit = virtio_ccw_exit; 1649 dc->reset = virtio_ccw_reset; 1650 dc->props = virtio_ccw_balloon_properties; 1651 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1652 } 1653 1654 static const TypeInfo virtio_ccw_balloon = { 1655 .name = TYPE_VIRTIO_BALLOON_CCW, 1656 .parent = TYPE_VIRTIO_CCW_DEVICE, 1657 .instance_size = sizeof(VirtIOBalloonCcw), 1658 .instance_init = virtio_ccw_balloon_instance_init, 1659 .class_init = virtio_ccw_balloon_class_init, 1660 }; 1661 1662 static Property virtio_ccw_scsi_properties[] = { 1663 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1664 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1665 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1666 DEFINE_PROP_END_OF_LIST(), 1667 }; 1668 1669 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data) 1670 { 1671 DeviceClass *dc = DEVICE_CLASS(klass); 1672 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1673 1674 k->realize = virtio_ccw_scsi_realize; 1675 k->exit = virtio_ccw_exit; 1676 dc->reset = virtio_ccw_reset; 1677 dc->props = virtio_ccw_scsi_properties; 1678 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1679 } 1680 1681 static const TypeInfo virtio_ccw_scsi = { 1682 .name = TYPE_VIRTIO_SCSI_CCW, 1683 .parent = TYPE_VIRTIO_CCW_DEVICE, 1684 .instance_size = sizeof(VirtIOSCSICcw), 1685 .instance_init = virtio_ccw_scsi_instance_init, 1686 .class_init = virtio_ccw_scsi_class_init, 1687 }; 1688 1689 #ifdef CONFIG_VHOST_SCSI 1690 static Property vhost_ccw_scsi_properties[] = { 1691 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1692 DEFINE_PROP_END_OF_LIST(), 1693 }; 1694 1695 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data) 1696 { 1697 DeviceClass *dc = DEVICE_CLASS(klass); 1698 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1699 1700 k->realize = vhost_ccw_scsi_realize; 1701 k->exit = virtio_ccw_exit; 1702 dc->reset = virtio_ccw_reset; 1703 dc->props = vhost_ccw_scsi_properties; 1704 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1705 } 1706 1707 static const TypeInfo vhost_ccw_scsi = { 1708 .name = TYPE_VHOST_SCSI_CCW, 1709 .parent = TYPE_VIRTIO_CCW_DEVICE, 1710 .instance_size = sizeof(VHostSCSICcw), 1711 .instance_init = vhost_ccw_scsi_instance_init, 1712 .class_init = vhost_ccw_scsi_class_init, 1713 }; 1714 #endif 1715 1716 static void virtio_ccw_rng_instance_init(Object *obj) 1717 { 1718 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); 1719 1720 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1721 TYPE_VIRTIO_RNG); 1722 object_property_add_alias(obj, "rng", OBJECT(&dev->vdev), 1723 "rng", &error_abort); 1724 } 1725 1726 static Property virtio_ccw_rng_properties[] = { 1727 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1728 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1729 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1730 DEFINE_PROP_END_OF_LIST(), 1731 }; 1732 1733 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) 1734 { 1735 DeviceClass *dc = DEVICE_CLASS(klass); 1736 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1737 1738 k->realize = virtio_ccw_rng_realize; 1739 k->exit = virtio_ccw_exit; 1740 dc->reset = virtio_ccw_reset; 1741 dc->props = virtio_ccw_rng_properties; 1742 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1743 } 1744 1745 static const TypeInfo virtio_ccw_rng = { 1746 .name = TYPE_VIRTIO_RNG_CCW, 1747 .parent = TYPE_VIRTIO_CCW_DEVICE, 1748 .instance_size = sizeof(VirtIORNGCcw), 1749 .instance_init = virtio_ccw_rng_instance_init, 1750 .class_init = virtio_ccw_rng_class_init, 1751 }; 1752 1753 static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp) 1754 { 1755 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1756 1757 virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev); 1758 virtio_ccw_device_realize(_dev, errp); 1759 } 1760 1761 static int virtio_ccw_busdev_exit(DeviceState *dev) 1762 { 1763 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1764 VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 1765 1766 return _info->exit(_dev); 1767 } 1768 1769 static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, 1770 DeviceState *dev, Error **errp) 1771 { 1772 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1773 SubchDev *sch = _dev->sch; 1774 1775 virtio_ccw_stop_ioeventfd(_dev); 1776 1777 /* 1778 * We should arrive here only for device_del, since we don't support 1779 * direct hot(un)plug of channels, but only through virtio. 1780 */ 1781 assert(sch != NULL); 1782 /* Subchannel is now disabled and no longer valid. */ 1783 sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA | 1784 PMCW_FLAGS_MASK_DNV); 1785 1786 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0); 1787 1788 object_unparent(OBJECT(dev)); 1789 } 1790 1791 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) 1792 { 1793 DeviceClass *dc = DEVICE_CLASS(klass); 1794 1795 dc->realize = virtio_ccw_busdev_realize; 1796 dc->exit = virtio_ccw_busdev_exit; 1797 dc->bus_type = TYPE_VIRTUAL_CSS_BUS; 1798 } 1799 1800 static const TypeInfo virtio_ccw_device_info = { 1801 .name = TYPE_VIRTIO_CCW_DEVICE, 1802 .parent = TYPE_DEVICE, 1803 .instance_size = sizeof(VirtioCcwDevice), 1804 .class_init = virtio_ccw_device_class_init, 1805 .class_size = sizeof(VirtIOCCWDeviceClass), 1806 .abstract = true, 1807 }; 1808 1809 /***************** Virtual-css Bus Bridge Device ********************/ 1810 /* Only required to have the virtio bus as child in the system bus */ 1811 1812 static int virtual_css_bridge_init(SysBusDevice *dev) 1813 { 1814 /* nothing */ 1815 return 0; 1816 } 1817 1818 static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) 1819 { 1820 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); 1821 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); 1822 DeviceClass *dc = DEVICE_CLASS(klass); 1823 1824 k->init = virtual_css_bridge_init; 1825 hc->unplug = virtio_ccw_busdev_unplug; 1826 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 1827 } 1828 1829 static const TypeInfo virtual_css_bridge_info = { 1830 .name = "virtual-css-bridge", 1831 .parent = TYPE_SYS_BUS_DEVICE, 1832 .instance_size = sizeof(SysBusDevice), 1833 .class_init = virtual_css_bridge_class_init, 1834 .interfaces = (InterfaceInfo[]) { 1835 { TYPE_HOTPLUG_HANDLER }, 1836 { } 1837 } 1838 }; 1839 1840 /* virtio-ccw-bus */ 1841 1842 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 1843 VirtioCcwDevice *dev) 1844 { 1845 DeviceState *qdev = DEVICE(dev); 1846 char virtio_bus_name[] = "virtio-bus"; 1847 1848 qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS, 1849 qdev, virtio_bus_name); 1850 } 1851 1852 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data) 1853 { 1854 VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); 1855 BusClass *bus_class = BUS_CLASS(klass); 1856 1857 bus_class->max_dev = 1; 1858 k->notify = virtio_ccw_notify; 1859 k->vmstate_change = virtio_ccw_vmstate_change; 1860 k->query_guest_notifiers = virtio_ccw_query_guest_notifiers; 1861 k->set_host_notifier = virtio_ccw_set_host_notifier; 1862 k->set_guest_notifiers = virtio_ccw_set_guest_notifiers; 1863 k->save_queue = virtio_ccw_save_queue; 1864 k->load_queue = virtio_ccw_load_queue; 1865 k->save_config = virtio_ccw_save_config; 1866 k->load_config = virtio_ccw_load_config; 1867 k->device_plugged = virtio_ccw_device_plugged; 1868 k->device_unplugged = virtio_ccw_device_unplugged; 1869 } 1870 1871 static const TypeInfo virtio_ccw_bus_info = { 1872 .name = TYPE_VIRTIO_CCW_BUS, 1873 .parent = TYPE_VIRTIO_BUS, 1874 .instance_size = sizeof(VirtioCcwBusState), 1875 .class_init = virtio_ccw_bus_class_init, 1876 }; 1877 1878 #ifdef CONFIG_VIRTFS 1879 static Property virtio_ccw_9p_properties[] = { 1880 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1881 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1882 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1883 DEFINE_PROP_END_OF_LIST(), 1884 }; 1885 1886 static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1887 { 1888 V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev); 1889 DeviceState *vdev = DEVICE(&dev->vdev); 1890 Error *err = NULL; 1891 1892 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1893 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1894 if (err) { 1895 error_propagate(errp, err); 1896 } 1897 } 1898 1899 static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data) 1900 { 1901 DeviceClass *dc = DEVICE_CLASS(klass); 1902 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1903 1904 k->exit = virtio_ccw_exit; 1905 k->realize = virtio_ccw_9p_realize; 1906 dc->reset = virtio_ccw_reset; 1907 dc->props = virtio_ccw_9p_properties; 1908 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1909 } 1910 1911 static void virtio_ccw_9p_instance_init(Object *obj) 1912 { 1913 V9fsCCWState *dev = VIRTIO_9P_CCW(obj); 1914 1915 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1916 TYPE_VIRTIO_9P); 1917 } 1918 1919 static const TypeInfo virtio_ccw_9p_info = { 1920 .name = TYPE_VIRTIO_9P_CCW, 1921 .parent = TYPE_VIRTIO_CCW_DEVICE, 1922 .instance_size = sizeof(V9fsCCWState), 1923 .instance_init = virtio_ccw_9p_instance_init, 1924 .class_init = virtio_ccw_9p_class_init, 1925 }; 1926 #endif 1927 1928 static void virtio_ccw_register(void) 1929 { 1930 type_register_static(&virtio_ccw_bus_info); 1931 type_register_static(&virtual_css_bus_info); 1932 type_register_static(&virtio_ccw_device_info); 1933 type_register_static(&virtio_ccw_serial); 1934 type_register_static(&virtio_ccw_blk); 1935 type_register_static(&virtio_ccw_net); 1936 type_register_static(&virtio_ccw_balloon); 1937 type_register_static(&virtio_ccw_scsi); 1938 #ifdef CONFIG_VHOST_SCSI 1939 type_register_static(&vhost_ccw_scsi); 1940 #endif 1941 type_register_static(&virtio_ccw_rng); 1942 type_register_static(&virtual_css_bridge_info); 1943 #ifdef CONFIG_VIRTFS 1944 type_register_static(&virtio_ccw_9p_info); 1945 #endif 1946 } 1947 1948 type_init(virtio_ccw_register) 1949