1 /* 2 * virtio ccw target implementation 3 * 4 * Copyright 2012,2015 IBM Corp. 5 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> 6 * Pierre Morel <pmorel@linux.vnet.ibm.com> 7 * 8 * This work is licensed under the terms of the GNU GPL, version 2 or (at 9 * your option) any later version. See the COPYING file in the top-level 10 * directory. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "qapi/error.h" 15 #include "hw/hw.h" 16 #include "sysemu/block-backend.h" 17 #include "sysemu/blockdev.h" 18 #include "sysemu/sysemu.h" 19 #include "sysemu/kvm.h" 20 #include "net/net.h" 21 #include "hw/virtio/virtio.h" 22 #include "hw/virtio/virtio-serial.h" 23 #include "hw/virtio/virtio-net.h" 24 #include "hw/sysbus.h" 25 #include "qemu/bitops.h" 26 #include "qemu/error-report.h" 27 #include "hw/virtio/virtio-access.h" 28 #include "hw/virtio/virtio-bus.h" 29 #include "hw/s390x/adapter.h" 30 #include "hw/s390x/s390_flic.h" 31 32 #include "hw/s390x/ioinst.h" 33 #include "hw/s390x/css.h" 34 #include "virtio-ccw.h" 35 #include "trace.h" 36 37 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 38 VirtioCcwDevice *dev); 39 40 static void virtual_css_bus_reset(BusState *qbus) 41 { 42 /* This should actually be modelled via the generic css */ 43 css_reset(); 44 } 45 46 47 static void virtual_css_bus_class_init(ObjectClass *klass, void *data) 48 { 49 BusClass *k = BUS_CLASS(klass); 50 51 k->reset = virtual_css_bus_reset; 52 } 53 54 static const TypeInfo virtual_css_bus_info = { 55 .name = TYPE_VIRTUAL_CSS_BUS, 56 .parent = TYPE_BUS, 57 .instance_size = sizeof(VirtualCssBus), 58 .class_init = virtual_css_bus_class_init, 59 }; 60 61 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch) 62 { 63 VirtIODevice *vdev = NULL; 64 VirtioCcwDevice *dev = sch->driver_data; 65 66 if (dev) { 67 vdev = virtio_bus_get_device(&dev->bus); 68 } 69 return vdev; 70 } 71 72 static int virtio_ccw_set_guest2host_notifier(VirtioCcwDevice *dev, int n, 73 bool assign, bool set_handler) 74 { 75 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 76 VirtQueue *vq = virtio_get_queue(vdev, n); 77 EventNotifier *notifier = virtio_queue_get_host_notifier(vq); 78 int r = 0; 79 SubchDev *sch = dev->sch; 80 uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid; 81 82 if (assign) { 83 r = event_notifier_init(notifier, 1); 84 if (r < 0) { 85 error_report("%s: unable to init event notifier: %d", __func__, r); 86 return r; 87 } 88 virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler); 89 r = s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); 90 if (r < 0) { 91 error_report("%s: unable to assign ioeventfd: %d", __func__, r); 92 virtio_queue_set_host_notifier_fd_handler(vq, false, false); 93 event_notifier_cleanup(notifier); 94 return r; 95 } 96 } else { 97 virtio_queue_set_host_notifier_fd_handler(vq, false, false); 98 s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); 99 event_notifier_cleanup(notifier); 100 } 101 return r; 102 } 103 104 static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev) 105 { 106 VirtIODevice *vdev; 107 int n, r; 108 109 if (!(dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) || 110 dev->ioeventfd_disabled || 111 dev->ioeventfd_started) { 112 return; 113 } 114 vdev = virtio_bus_get_device(&dev->bus); 115 for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) { 116 if (!virtio_queue_get_num(vdev, n)) { 117 continue; 118 } 119 r = virtio_ccw_set_guest2host_notifier(dev, n, true, true); 120 if (r < 0) { 121 goto assign_error; 122 } 123 } 124 dev->ioeventfd_started = true; 125 return; 126 127 assign_error: 128 while (--n >= 0) { 129 if (!virtio_queue_get_num(vdev, n)) { 130 continue; 131 } 132 r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); 133 assert(r >= 0); 134 } 135 dev->ioeventfd_started = false; 136 /* Disable ioeventfd for this device. */ 137 dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; 138 error_report("%s: failed. Fallback to userspace (slower).", __func__); 139 } 140 141 static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev) 142 { 143 VirtIODevice *vdev; 144 int n, r; 145 146 if (!dev->ioeventfd_started) { 147 return; 148 } 149 vdev = virtio_bus_get_device(&dev->bus); 150 for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) { 151 if (!virtio_queue_get_num(vdev, n)) { 152 continue; 153 } 154 r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); 155 assert(r >= 0); 156 } 157 dev->ioeventfd_started = false; 158 } 159 160 VirtualCssBus *virtual_css_bus_init(void) 161 { 162 VirtualCssBus *cbus; 163 BusState *bus; 164 DeviceState *dev; 165 166 /* Create bridge device */ 167 dev = qdev_create(NULL, "virtual-css-bridge"); 168 qdev_init_nofail(dev); 169 170 /* Create bus on bridge device */ 171 bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css"); 172 cbus = VIRTUAL_CSS_BUS(bus); 173 174 /* Enable hotplugging */ 175 qbus_set_hotplug_handler(bus, dev, &error_abort); 176 177 return cbus; 178 } 179 180 /* Communication blocks used by several channel commands. */ 181 typedef struct VqInfoBlockLegacy { 182 uint64_t queue; 183 uint32_t align; 184 uint16_t index; 185 uint16_t num; 186 } QEMU_PACKED VqInfoBlockLegacy; 187 188 typedef struct VqInfoBlock { 189 uint64_t desc; 190 uint32_t res0; 191 uint16_t index; 192 uint16_t num; 193 uint64_t avail; 194 uint64_t used; 195 } QEMU_PACKED VqInfoBlock; 196 197 typedef struct VqConfigBlock { 198 uint16_t index; 199 uint16_t num_max; 200 } QEMU_PACKED VqConfigBlock; 201 202 typedef struct VirtioFeatDesc { 203 uint32_t features; 204 uint8_t index; 205 } QEMU_PACKED VirtioFeatDesc; 206 207 typedef struct VirtioThinintInfo { 208 hwaddr summary_indicator; 209 hwaddr device_indicator; 210 uint64_t ind_bit; 211 uint8_t isc; 212 } QEMU_PACKED VirtioThinintInfo; 213 214 typedef struct VirtioRevInfo { 215 uint16_t revision; 216 uint16_t length; 217 uint8_t data[0]; 218 } QEMU_PACKED VirtioRevInfo; 219 220 /* Specify where the virtqueues for the subchannel are in guest memory. */ 221 static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info, 222 VqInfoBlockLegacy *linfo) 223 { 224 VirtIODevice *vdev = virtio_ccw_get_vdev(sch); 225 uint16_t index = info ? info->index : linfo->index; 226 uint16_t num = info ? info->num : linfo->num; 227 uint64_t desc = info ? info->desc : linfo->queue; 228 229 if (index >= VIRTIO_CCW_QUEUE_MAX) { 230 return -EINVAL; 231 } 232 233 /* Current code in virtio.c relies on 4K alignment. */ 234 if (linfo && desc && (linfo->align != 4096)) { 235 return -EINVAL; 236 } 237 238 if (!vdev) { 239 return -EINVAL; 240 } 241 242 if (info) { 243 virtio_queue_set_rings(vdev, index, desc, info->avail, info->used); 244 } else { 245 virtio_queue_set_addr(vdev, index, desc); 246 } 247 if (!desc) { 248 virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR); 249 } else { 250 if (info) { 251 /* virtio-1 allows changing the ring size. */ 252 if (virtio_queue_get_num(vdev, index) < num) { 253 /* Fail if we exceed the maximum number. */ 254 return -EINVAL; 255 } 256 virtio_queue_set_num(vdev, index, num); 257 } else if (virtio_queue_get_num(vdev, index) > num) { 258 /* Fail if we don't have a big enough queue. */ 259 return -EINVAL; 260 } 261 /* We ignore possible increased num for legacy for compatibility. */ 262 virtio_queue_set_vector(vdev, index, index); 263 } 264 /* tell notify handler in case of config change */ 265 vdev->config_vector = VIRTIO_CCW_QUEUE_MAX; 266 return 0; 267 } 268 269 static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev) 270 { 271 virtio_ccw_stop_ioeventfd(dev); 272 virtio_reset(vdev); 273 if (dev->indicators) { 274 release_indicator(&dev->routes.adapter, dev->indicators); 275 dev->indicators = NULL; 276 } 277 if (dev->indicators2) { 278 release_indicator(&dev->routes.adapter, dev->indicators2); 279 dev->indicators2 = NULL; 280 } 281 if (dev->summary_indicator) { 282 release_indicator(&dev->routes.adapter, dev->summary_indicator); 283 dev->summary_indicator = NULL; 284 } 285 dev->sch->thinint_active = false; 286 } 287 288 static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len, 289 bool is_legacy) 290 { 291 int ret; 292 VqInfoBlock info; 293 VqInfoBlockLegacy linfo; 294 size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info); 295 296 if (check_len) { 297 if (ccw.count != info_len) { 298 return -EINVAL; 299 } 300 } else if (ccw.count < info_len) { 301 /* Can't execute command. */ 302 return -EINVAL; 303 } 304 if (!ccw.cda) { 305 return -EFAULT; 306 } 307 if (is_legacy) { 308 linfo.queue = address_space_ldq_be(&address_space_memory, ccw.cda, 309 MEMTXATTRS_UNSPECIFIED, NULL); 310 linfo.align = address_space_ldl_be(&address_space_memory, 311 ccw.cda + sizeof(linfo.queue), 312 MEMTXATTRS_UNSPECIFIED, 313 NULL); 314 linfo.index = address_space_lduw_be(&address_space_memory, 315 ccw.cda + sizeof(linfo.queue) 316 + sizeof(linfo.align), 317 MEMTXATTRS_UNSPECIFIED, 318 NULL); 319 linfo.num = address_space_lduw_be(&address_space_memory, 320 ccw.cda + sizeof(linfo.queue) 321 + sizeof(linfo.align) 322 + sizeof(linfo.index), 323 MEMTXATTRS_UNSPECIFIED, 324 NULL); 325 ret = virtio_ccw_set_vqs(sch, NULL, &linfo); 326 } else { 327 info.desc = address_space_ldq_be(&address_space_memory, ccw.cda, 328 MEMTXATTRS_UNSPECIFIED, NULL); 329 info.index = address_space_lduw_be(&address_space_memory, 330 ccw.cda + sizeof(info.desc) 331 + sizeof(info.res0), 332 MEMTXATTRS_UNSPECIFIED, NULL); 333 info.num = address_space_lduw_be(&address_space_memory, 334 ccw.cda + sizeof(info.desc) 335 + sizeof(info.res0) 336 + sizeof(info.index), 337 MEMTXATTRS_UNSPECIFIED, NULL); 338 info.avail = address_space_ldq_be(&address_space_memory, 339 ccw.cda + sizeof(info.desc) 340 + sizeof(info.res0) 341 + sizeof(info.index) 342 + sizeof(info.num), 343 MEMTXATTRS_UNSPECIFIED, NULL); 344 info.used = address_space_ldq_be(&address_space_memory, 345 ccw.cda + sizeof(info.desc) 346 + sizeof(info.res0) 347 + sizeof(info.index) 348 + sizeof(info.num) 349 + sizeof(info.avail), 350 MEMTXATTRS_UNSPECIFIED, NULL); 351 ret = virtio_ccw_set_vqs(sch, &info, NULL); 352 } 353 sch->curr_status.scsw.count = 0; 354 return ret; 355 } 356 357 static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) 358 { 359 int ret; 360 VirtioRevInfo revinfo; 361 uint8_t status; 362 VirtioFeatDesc features; 363 void *config; 364 hwaddr indicators; 365 VqConfigBlock vq_config; 366 VirtioCcwDevice *dev = sch->driver_data; 367 VirtIODevice *vdev = virtio_ccw_get_vdev(sch); 368 bool check_len; 369 int len; 370 hwaddr hw_len; 371 VirtioThinintInfo *thinint; 372 373 if (!dev) { 374 return -EINVAL; 375 } 376 377 trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid, 378 ccw.cmd_code); 379 check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC)); 380 381 /* Look at the command. */ 382 switch (ccw.cmd_code) { 383 case CCW_CMD_SET_VQ: 384 ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1); 385 break; 386 case CCW_CMD_VDEV_RESET: 387 virtio_ccw_reset_virtio(dev, vdev); 388 ret = 0; 389 break; 390 case CCW_CMD_READ_FEAT: 391 if (check_len) { 392 if (ccw.count != sizeof(features)) { 393 ret = -EINVAL; 394 break; 395 } 396 } else if (ccw.count < sizeof(features)) { 397 /* Can't execute command. */ 398 ret = -EINVAL; 399 break; 400 } 401 if (!ccw.cda) { 402 ret = -EFAULT; 403 } else { 404 features.index = address_space_ldub(&address_space_memory, 405 ccw.cda 406 + sizeof(features.features), 407 MEMTXATTRS_UNSPECIFIED, 408 NULL); 409 if (features.index == 0) { 410 if (dev->revision >= 1) { 411 /* Don't offer legacy features for modern devices. */ 412 features.features = (uint32_t) 413 (vdev->host_features & ~VIRTIO_LEGACY_FEATURES); 414 } else { 415 features.features = (uint32_t)vdev->host_features; 416 } 417 } else if ((features.index == 1) && (dev->revision >= 1)) { 418 /* 419 * Only offer feature bits beyond 31 if the guest has 420 * negotiated at least revision 1. 421 */ 422 features.features = (uint32_t)(vdev->host_features >> 32); 423 } else { 424 /* Return zeroes if the guest supports more feature bits. */ 425 features.features = 0; 426 } 427 address_space_stl_le(&address_space_memory, ccw.cda, 428 features.features, MEMTXATTRS_UNSPECIFIED, 429 NULL); 430 sch->curr_status.scsw.count = ccw.count - sizeof(features); 431 ret = 0; 432 } 433 break; 434 case CCW_CMD_WRITE_FEAT: 435 if (check_len) { 436 if (ccw.count != sizeof(features)) { 437 ret = -EINVAL; 438 break; 439 } 440 } else if (ccw.count < sizeof(features)) { 441 /* Can't execute command. */ 442 ret = -EINVAL; 443 break; 444 } 445 if (!ccw.cda) { 446 ret = -EFAULT; 447 } else { 448 features.index = address_space_ldub(&address_space_memory, 449 ccw.cda 450 + sizeof(features.features), 451 MEMTXATTRS_UNSPECIFIED, 452 NULL); 453 features.features = address_space_ldl_le(&address_space_memory, 454 ccw.cda, 455 MEMTXATTRS_UNSPECIFIED, 456 NULL); 457 if (features.index == 0) { 458 virtio_set_features(vdev, 459 (vdev->guest_features & 0xffffffff00000000ULL) | 460 features.features); 461 } else if ((features.index == 1) && (dev->revision >= 1)) { 462 /* 463 * If the guest did not negotiate at least revision 1, 464 * we did not offer it any feature bits beyond 31. Such a 465 * guest passing us any bit here is therefore buggy. 466 */ 467 virtio_set_features(vdev, 468 (vdev->guest_features & 0x00000000ffffffffULL) | 469 ((uint64_t)features.features << 32)); 470 } else { 471 /* 472 * If the guest supports more feature bits, assert that it 473 * passes us zeroes for those we don't support. 474 */ 475 if (features.features) { 476 fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n", 477 features.index, features.features); 478 /* XXX: do a unit check here? */ 479 } 480 } 481 sch->curr_status.scsw.count = ccw.count - sizeof(features); 482 ret = 0; 483 } 484 break; 485 case CCW_CMD_READ_CONF: 486 if (check_len) { 487 if (ccw.count > vdev->config_len) { 488 ret = -EINVAL; 489 break; 490 } 491 } 492 len = MIN(ccw.count, vdev->config_len); 493 if (!ccw.cda) { 494 ret = -EFAULT; 495 } else { 496 virtio_bus_get_vdev_config(&dev->bus, vdev->config); 497 /* XXX config space endianness */ 498 cpu_physical_memory_write(ccw.cda, vdev->config, len); 499 sch->curr_status.scsw.count = ccw.count - len; 500 ret = 0; 501 } 502 break; 503 case CCW_CMD_WRITE_CONF: 504 if (check_len) { 505 if (ccw.count > vdev->config_len) { 506 ret = -EINVAL; 507 break; 508 } 509 } 510 len = MIN(ccw.count, vdev->config_len); 511 hw_len = len; 512 if (!ccw.cda) { 513 ret = -EFAULT; 514 } else { 515 config = cpu_physical_memory_map(ccw.cda, &hw_len, 0); 516 if (!config) { 517 ret = -EFAULT; 518 } else { 519 len = hw_len; 520 /* XXX config space endianness */ 521 memcpy(vdev->config, config, len); 522 cpu_physical_memory_unmap(config, hw_len, 0, hw_len); 523 virtio_bus_set_vdev_config(&dev->bus, vdev->config); 524 sch->curr_status.scsw.count = ccw.count - len; 525 ret = 0; 526 } 527 } 528 break; 529 case CCW_CMD_WRITE_STATUS: 530 if (check_len) { 531 if (ccw.count != sizeof(status)) { 532 ret = -EINVAL; 533 break; 534 } 535 } else if (ccw.count < sizeof(status)) { 536 /* Can't execute command. */ 537 ret = -EINVAL; 538 break; 539 } 540 if (!ccw.cda) { 541 ret = -EFAULT; 542 } else { 543 status = address_space_ldub(&address_space_memory, ccw.cda, 544 MEMTXATTRS_UNSPECIFIED, NULL); 545 if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) { 546 virtio_ccw_stop_ioeventfd(dev); 547 } 548 if (virtio_set_status(vdev, status) == 0) { 549 if (vdev->status == 0) { 550 virtio_ccw_reset_virtio(dev, vdev); 551 } 552 if (status & VIRTIO_CONFIG_S_DRIVER_OK) { 553 virtio_ccw_start_ioeventfd(dev); 554 } 555 sch->curr_status.scsw.count = ccw.count - sizeof(status); 556 ret = 0; 557 } else { 558 /* Trigger a command reject. */ 559 ret = -ENOSYS; 560 } 561 } 562 break; 563 case CCW_CMD_SET_IND: 564 if (check_len) { 565 if (ccw.count != sizeof(indicators)) { 566 ret = -EINVAL; 567 break; 568 } 569 } else if (ccw.count < sizeof(indicators)) { 570 /* Can't execute command. */ 571 ret = -EINVAL; 572 break; 573 } 574 if (sch->thinint_active) { 575 /* Trigger a command reject. */ 576 ret = -ENOSYS; 577 break; 578 } 579 if (!ccw.cda) { 580 ret = -EFAULT; 581 } else { 582 indicators = address_space_ldq_be(&address_space_memory, ccw.cda, 583 MEMTXATTRS_UNSPECIFIED, NULL); 584 dev->indicators = get_indicator(indicators, sizeof(uint64_t)); 585 sch->curr_status.scsw.count = ccw.count - sizeof(indicators); 586 ret = 0; 587 } 588 break; 589 case CCW_CMD_SET_CONF_IND: 590 if (check_len) { 591 if (ccw.count != sizeof(indicators)) { 592 ret = -EINVAL; 593 break; 594 } 595 } else if (ccw.count < sizeof(indicators)) { 596 /* Can't execute command. */ 597 ret = -EINVAL; 598 break; 599 } 600 if (!ccw.cda) { 601 ret = -EFAULT; 602 } else { 603 indicators = address_space_ldq_be(&address_space_memory, ccw.cda, 604 MEMTXATTRS_UNSPECIFIED, NULL); 605 dev->indicators2 = get_indicator(indicators, sizeof(uint64_t)); 606 sch->curr_status.scsw.count = ccw.count - sizeof(indicators); 607 ret = 0; 608 } 609 break; 610 case CCW_CMD_READ_VQ_CONF: 611 if (check_len) { 612 if (ccw.count != sizeof(vq_config)) { 613 ret = -EINVAL; 614 break; 615 } 616 } else if (ccw.count < sizeof(vq_config)) { 617 /* Can't execute command. */ 618 ret = -EINVAL; 619 break; 620 } 621 if (!ccw.cda) { 622 ret = -EFAULT; 623 } else { 624 vq_config.index = address_space_lduw_be(&address_space_memory, 625 ccw.cda, 626 MEMTXATTRS_UNSPECIFIED, 627 NULL); 628 if (vq_config.index >= VIRTIO_CCW_QUEUE_MAX) { 629 ret = -EINVAL; 630 break; 631 } 632 vq_config.num_max = virtio_queue_get_num(vdev, 633 vq_config.index); 634 address_space_stw_be(&address_space_memory, 635 ccw.cda + sizeof(vq_config.index), 636 vq_config.num_max, 637 MEMTXATTRS_UNSPECIFIED, 638 NULL); 639 sch->curr_status.scsw.count = ccw.count - sizeof(vq_config); 640 ret = 0; 641 } 642 break; 643 case CCW_CMD_SET_IND_ADAPTER: 644 if (check_len) { 645 if (ccw.count != sizeof(*thinint)) { 646 ret = -EINVAL; 647 break; 648 } 649 } else if (ccw.count < sizeof(*thinint)) { 650 /* Can't execute command. */ 651 ret = -EINVAL; 652 break; 653 } 654 len = sizeof(*thinint); 655 hw_len = len; 656 if (!ccw.cda) { 657 ret = -EFAULT; 658 } else if (dev->indicators && !sch->thinint_active) { 659 /* Trigger a command reject. */ 660 ret = -ENOSYS; 661 } else { 662 thinint = cpu_physical_memory_map(ccw.cda, &hw_len, 0); 663 if (!thinint) { 664 ret = -EFAULT; 665 } else { 666 uint64_t ind_bit = ldq_be_p(&thinint->ind_bit); 667 668 len = hw_len; 669 dev->summary_indicator = 670 get_indicator(ldq_be_p(&thinint->summary_indicator), 671 sizeof(uint8_t)); 672 dev->indicators = 673 get_indicator(ldq_be_p(&thinint->device_indicator), 674 ind_bit / 8 + 1); 675 dev->thinint_isc = thinint->isc; 676 dev->routes.adapter.ind_offset = ind_bit; 677 dev->routes.adapter.summary_offset = 7; 678 cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len); 679 ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, 680 dev->thinint_isc, true, false, 681 &dev->routes.adapter.adapter_id); 682 assert(ret == 0); 683 sch->thinint_active = ((dev->indicators != NULL) && 684 (dev->summary_indicator != NULL)); 685 sch->curr_status.scsw.count = ccw.count - len; 686 ret = 0; 687 } 688 } 689 break; 690 case CCW_CMD_SET_VIRTIO_REV: 691 len = sizeof(revinfo); 692 if (ccw.count < len) { 693 ret = -EINVAL; 694 break; 695 } 696 if (!ccw.cda) { 697 ret = -EFAULT; 698 break; 699 } 700 revinfo.revision = 701 address_space_lduw_be(&address_space_memory, ccw.cda, 702 MEMTXATTRS_UNSPECIFIED, NULL); 703 revinfo.length = 704 address_space_lduw_be(&address_space_memory, 705 ccw.cda + sizeof(revinfo.revision), 706 MEMTXATTRS_UNSPECIFIED, NULL); 707 if (ccw.count < len + revinfo.length || 708 (check_len && ccw.count > len + revinfo.length)) { 709 ret = -EINVAL; 710 break; 711 } 712 /* 713 * Once we start to support revisions with additional data, we'll 714 * need to fetch it here. Nothing to do for now, though. 715 */ 716 if (dev->revision >= 0 || 717 revinfo.revision > virtio_ccw_rev_max(dev)) { 718 ret = -ENOSYS; 719 break; 720 } 721 ret = 0; 722 dev->revision = revinfo.revision; 723 break; 724 default: 725 ret = -ENOSYS; 726 break; 727 } 728 return ret; 729 } 730 731 static void virtio_sch_disable_cb(SubchDev *sch) 732 { 733 VirtioCcwDevice *dev = sch->driver_data; 734 735 dev->revision = -1; 736 } 737 738 static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp) 739 { 740 unsigned int schid; 741 bool found = false; 742 SubchDev *sch; 743 Error *err = NULL; 744 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 745 746 sch = g_malloc0(sizeof(SubchDev)); 747 748 sch->driver_data = dev; 749 dev->sch = sch; 750 751 dev->indicators = NULL; 752 753 /* Initialize subchannel structure. */ 754 sch->channel_prog = 0x0; 755 sch->last_cmd_valid = false; 756 sch->thinint_active = false; 757 /* 758 * Use a device number if provided. Otherwise, fall back to subchannel 759 * number. 760 */ 761 if (dev->bus_id.valid) { 762 /* Enforce use of virtual cssid. */ 763 if (dev->bus_id.cssid != VIRTUAL_CSSID) { 764 error_setg(errp, "cssid %x not valid for virtio devices", 765 dev->bus_id.cssid); 766 goto out_err; 767 } 768 if (css_devno_used(dev->bus_id.cssid, dev->bus_id.ssid, 769 dev->bus_id.devid)) { 770 error_setg(errp, "Device %x.%x.%04x already exists", 771 dev->bus_id.cssid, dev->bus_id.ssid, 772 dev->bus_id.devid); 773 goto out_err; 774 } 775 sch->cssid = dev->bus_id.cssid; 776 sch->ssid = dev->bus_id.ssid; 777 sch->devno = dev->bus_id.devid; 778 779 /* Find the next free id. */ 780 for (schid = 0; schid <= MAX_SCHID; schid++) { 781 if (!css_find_subch(1, sch->cssid, sch->ssid, schid)) { 782 sch->schid = schid; 783 css_subch_assign(sch->cssid, sch->ssid, sch->schid, 784 sch->devno, sch); 785 found = true; 786 break; 787 } 788 } 789 if (!found) { 790 error_setg(errp, "No free subchannel found for %x.%x.%04x", 791 sch->cssid, sch->ssid, sch->devno); 792 goto out_err; 793 } 794 trace_virtio_ccw_new_device(sch->cssid, sch->ssid, sch->schid, 795 sch->devno, "user-configured"); 796 } else { 797 unsigned int cssid = VIRTUAL_CSSID, ssid, devno; 798 799 for (ssid = 0; ssid <= MAX_SSID; ssid++) { 800 for (schid = 0; schid <= MAX_SCHID; schid++) { 801 if (!css_find_subch(1, cssid, ssid, schid)) { 802 sch->cssid = cssid; 803 sch->ssid = ssid; 804 sch->schid = schid; 805 devno = schid; 806 /* 807 * If the devno is already taken, look further in this 808 * subchannel set. 809 */ 810 while (css_devno_used(cssid, ssid, devno)) { 811 if (devno == MAX_SCHID) { 812 devno = 0; 813 } else if (devno == schid - 1) { 814 error_setg(errp, "No free devno found"); 815 goto out_err; 816 } else { 817 devno++; 818 } 819 } 820 sch->devno = devno; 821 css_subch_assign(cssid, ssid, schid, devno, sch); 822 found = true; 823 break; 824 } 825 } 826 if (found) { 827 break; 828 } 829 } 830 if (!found) { 831 error_setg(errp, "Virtual channel subsystem is full!"); 832 goto out_err; 833 } 834 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 835 "auto-configured"); 836 } 837 838 /* Build initial schib. */ 839 css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE); 840 841 sch->ccw_cb = virtio_ccw_cb; 842 sch->disable_cb = virtio_sch_disable_cb; 843 844 /* Build senseid data. */ 845 memset(&sch->id, 0, sizeof(SenseId)); 846 sch->id.reserved = 0xff; 847 sch->id.cu_type = VIRTIO_CCW_CU_TYPE; 848 849 dev->revision = -1; 850 851 if (k->realize) { 852 k->realize(dev, &err); 853 } 854 if (err) { 855 error_propagate(errp, err); 856 css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); 857 goto out_err; 858 } 859 860 return; 861 862 out_err: 863 dev->sch = NULL; 864 g_free(sch); 865 } 866 867 static int virtio_ccw_exit(VirtioCcwDevice *dev) 868 { 869 SubchDev *sch = dev->sch; 870 871 if (sch) { 872 css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); 873 g_free(sch); 874 } 875 if (dev->indicators) { 876 release_indicator(&dev->routes.adapter, dev->indicators); 877 dev->indicators = NULL; 878 } 879 return 0; 880 } 881 882 static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp) 883 { 884 DeviceState *qdev = DEVICE(ccw_dev); 885 VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); 886 DeviceState *vdev = DEVICE(&dev->vdev); 887 888 virtio_net_set_netclient_name(&dev->vdev, qdev->id, 889 object_get_typename(OBJECT(qdev))); 890 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 891 object_property_set_bool(OBJECT(vdev), true, "realized", errp); 892 } 893 894 static void virtio_ccw_net_instance_init(Object *obj) 895 { 896 VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); 897 898 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 899 TYPE_VIRTIO_NET); 900 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 901 "bootindex", &error_abort); 902 } 903 904 static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp) 905 { 906 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); 907 DeviceState *vdev = DEVICE(&dev->vdev); 908 909 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 910 object_property_set_bool(OBJECT(vdev), true, "realized", errp); 911 } 912 913 static void virtio_ccw_blk_instance_init(Object *obj) 914 { 915 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); 916 917 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 918 TYPE_VIRTIO_BLK); 919 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread", 920 &error_abort); 921 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 922 "bootindex", &error_abort); 923 } 924 925 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp) 926 { 927 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); 928 DeviceState *vdev = DEVICE(&dev->vdev); 929 DeviceState *proxy = DEVICE(ccw_dev); 930 char *bus_name; 931 932 /* 933 * For command line compatibility, this sets the virtio-serial-device bus 934 * name as before. 935 */ 936 if (proxy->id) { 937 bus_name = g_strdup_printf("%s.0", proxy->id); 938 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 939 g_free(bus_name); 940 } 941 942 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 943 object_property_set_bool(OBJECT(vdev), true, "realized", errp); 944 } 945 946 947 static void virtio_ccw_serial_instance_init(Object *obj) 948 { 949 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); 950 951 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 952 TYPE_VIRTIO_SERIAL); 953 } 954 955 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp) 956 { 957 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); 958 DeviceState *vdev = DEVICE(&dev->vdev); 959 960 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 961 object_property_set_bool(OBJECT(vdev), true, "realized", errp); 962 } 963 964 static void virtio_ccw_balloon_instance_init(Object *obj) 965 { 966 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); 967 968 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 969 TYPE_VIRTIO_BALLOON); 970 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev), 971 "guest-stats", &error_abort); 972 object_property_add_alias(obj, "guest-stats-polling-interval", 973 OBJECT(&dev->vdev), 974 "guest-stats-polling-interval", &error_abort); 975 } 976 977 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) 978 { 979 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); 980 DeviceState *vdev = DEVICE(&dev->vdev); 981 DeviceState *qdev = DEVICE(ccw_dev); 982 char *bus_name; 983 984 /* 985 * For command line compatibility, this sets the virtio-scsi-device bus 986 * name as before. 987 */ 988 if (qdev->id) { 989 bus_name = g_strdup_printf("%s.0", qdev->id); 990 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 991 g_free(bus_name); 992 } 993 994 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 995 object_property_set_bool(OBJECT(vdev), true, "realized", errp); 996 } 997 998 static void virtio_ccw_scsi_instance_init(Object *obj) 999 { 1000 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); 1001 1002 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1003 TYPE_VIRTIO_SCSI); 1004 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread", 1005 &error_abort); 1006 } 1007 1008 #ifdef CONFIG_VHOST_SCSI 1009 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1010 { 1011 VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); 1012 DeviceState *vdev = DEVICE(&dev->vdev); 1013 1014 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1015 object_property_set_bool(OBJECT(vdev), true, "realized", errp); 1016 } 1017 1018 static void vhost_ccw_scsi_instance_init(Object *obj) 1019 { 1020 VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); 1021 1022 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1023 TYPE_VHOST_SCSI); 1024 } 1025 #endif 1026 1027 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1028 { 1029 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); 1030 DeviceState *vdev = DEVICE(&dev->vdev); 1031 Error *err = NULL; 1032 1033 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1034 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1035 if (err) { 1036 error_propagate(errp, err); 1037 return; 1038 } 1039 1040 object_property_set_link(OBJECT(dev), 1041 OBJECT(dev->vdev.conf.rng), "rng", 1042 NULL); 1043 } 1044 1045 /* DeviceState to VirtioCcwDevice. Note: used on datapath, 1046 * be careful and test performance if you change this. 1047 */ 1048 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) 1049 { 1050 return container_of(d, VirtioCcwDevice, parent_obj); 1051 } 1052 1053 static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc, 1054 uint8_t to_be_set) 1055 { 1056 uint8_t ind_old, ind_new; 1057 hwaddr len = 1; 1058 uint8_t *ind_addr; 1059 1060 ind_addr = cpu_physical_memory_map(ind_loc, &len, 1); 1061 if (!ind_addr) { 1062 error_report("%s(%x.%x.%04x): unable to access indicator", 1063 __func__, sch->cssid, sch->ssid, sch->schid); 1064 return -1; 1065 } 1066 do { 1067 ind_old = *ind_addr; 1068 ind_new = ind_old | to_be_set; 1069 } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old); 1070 trace_virtio_ccw_set_ind(ind_loc, ind_old, ind_new); 1071 cpu_physical_memory_unmap(ind_addr, len, 1, len); 1072 1073 return ind_old; 1074 } 1075 1076 static void virtio_ccw_notify(DeviceState *d, uint16_t vector) 1077 { 1078 VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); 1079 SubchDev *sch = dev->sch; 1080 uint64_t indicators; 1081 1082 /* queue indicators + secondary indicators */ 1083 if (vector >= VIRTIO_CCW_QUEUE_MAX + 64) { 1084 return; 1085 } 1086 1087 if (vector < VIRTIO_CCW_QUEUE_MAX) { 1088 if (!dev->indicators) { 1089 return; 1090 } 1091 if (sch->thinint_active) { 1092 /* 1093 * In the adapter interrupt case, indicators points to a 1094 * memory area that may be (way) larger than 64 bit and 1095 * ind_bit indicates the start of the indicators in a big 1096 * endian notation. 1097 */ 1098 uint64_t ind_bit = dev->routes.adapter.ind_offset; 1099 1100 virtio_set_ind_atomic(sch, dev->indicators->addr + 1101 (ind_bit + vector) / 8, 1102 0x80 >> ((ind_bit + vector) % 8)); 1103 if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr, 1104 0x01)) { 1105 css_adapter_interrupt(dev->thinint_isc); 1106 } 1107 } else { 1108 indicators = address_space_ldq(&address_space_memory, 1109 dev->indicators->addr, 1110 MEMTXATTRS_UNSPECIFIED, 1111 NULL); 1112 indicators |= 1ULL << vector; 1113 address_space_stq(&address_space_memory, dev->indicators->addr, 1114 indicators, MEMTXATTRS_UNSPECIFIED, NULL); 1115 css_conditional_io_interrupt(sch); 1116 } 1117 } else { 1118 if (!dev->indicators2) { 1119 return; 1120 } 1121 vector = 0; 1122 indicators = address_space_ldq(&address_space_memory, 1123 dev->indicators2->addr, 1124 MEMTXATTRS_UNSPECIFIED, 1125 NULL); 1126 indicators |= 1ULL << vector; 1127 address_space_stq(&address_space_memory, dev->indicators2->addr, 1128 indicators, MEMTXATTRS_UNSPECIFIED, NULL); 1129 css_conditional_io_interrupt(sch); 1130 } 1131 } 1132 1133 static void virtio_ccw_reset(DeviceState *d) 1134 { 1135 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1136 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1137 1138 virtio_ccw_reset_virtio(dev, vdev); 1139 css_reset_sch(dev->sch); 1140 } 1141 1142 static void virtio_ccw_vmstate_change(DeviceState *d, bool running) 1143 { 1144 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1145 1146 if (running) { 1147 virtio_ccw_start_ioeventfd(dev); 1148 } else { 1149 virtio_ccw_stop_ioeventfd(dev); 1150 } 1151 } 1152 1153 static bool virtio_ccw_query_guest_notifiers(DeviceState *d) 1154 { 1155 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1156 1157 return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA); 1158 } 1159 1160 static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign) 1161 { 1162 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1163 1164 /* Stop using the generic ioeventfd, we are doing eventfd handling 1165 * ourselves below */ 1166 dev->ioeventfd_disabled = assign; 1167 if (assign) { 1168 virtio_ccw_stop_ioeventfd(dev); 1169 } 1170 return virtio_ccw_set_guest2host_notifier(dev, n, assign, false); 1171 } 1172 1173 static int virtio_ccw_get_mappings(VirtioCcwDevice *dev) 1174 { 1175 int r; 1176 1177 if (!dev->sch->thinint_active) { 1178 return -EINVAL; 1179 } 1180 1181 r = map_indicator(&dev->routes.adapter, dev->summary_indicator); 1182 if (r) { 1183 return r; 1184 } 1185 r = map_indicator(&dev->routes.adapter, dev->indicators); 1186 if (r) { 1187 return r; 1188 } 1189 dev->routes.adapter.summary_addr = dev->summary_indicator->map; 1190 dev->routes.adapter.ind_addr = dev->indicators->map; 1191 1192 return 0; 1193 } 1194 1195 static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs) 1196 { 1197 int i; 1198 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1199 int ret; 1200 S390FLICState *fs = s390_get_flic(); 1201 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 1202 1203 ret = virtio_ccw_get_mappings(dev); 1204 if (ret) { 1205 return ret; 1206 } 1207 for (i = 0; i < nvqs; i++) { 1208 if (!virtio_queue_get_num(vdev, i)) { 1209 break; 1210 } 1211 } 1212 dev->routes.num_routes = i; 1213 return fsc->add_adapter_routes(fs, &dev->routes); 1214 } 1215 1216 static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs) 1217 { 1218 S390FLICState *fs = s390_get_flic(); 1219 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 1220 1221 fsc->release_adapter_routes(fs, &dev->routes); 1222 } 1223 1224 static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n) 1225 { 1226 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1227 VirtQueue *vq = virtio_get_queue(vdev, n); 1228 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1229 1230 return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL, 1231 dev->routes.gsi[n]); 1232 } 1233 1234 static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n) 1235 { 1236 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1237 VirtQueue *vq = virtio_get_queue(vdev, n); 1238 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1239 int ret; 1240 1241 ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier, 1242 dev->routes.gsi[n]); 1243 assert(ret == 0); 1244 } 1245 1246 static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n, 1247 bool assign, bool with_irqfd) 1248 { 1249 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1250 VirtQueue *vq = virtio_get_queue(vdev, n); 1251 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1252 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); 1253 1254 if (assign) { 1255 int r = event_notifier_init(notifier, 0); 1256 1257 if (r < 0) { 1258 return r; 1259 } 1260 virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); 1261 if (with_irqfd) { 1262 r = virtio_ccw_add_irqfd(dev, n); 1263 if (r) { 1264 virtio_queue_set_guest_notifier_fd_handler(vq, false, 1265 with_irqfd); 1266 return r; 1267 } 1268 } 1269 /* 1270 * We do not support individual masking for channel devices, so we 1271 * need to manually trigger any guest masking callbacks here. 1272 */ 1273 if (k->guest_notifier_mask) { 1274 k->guest_notifier_mask(vdev, n, false); 1275 } 1276 /* get lost events and re-inject */ 1277 if (k->guest_notifier_pending && 1278 k->guest_notifier_pending(vdev, n)) { 1279 event_notifier_set(notifier); 1280 } 1281 } else { 1282 if (k->guest_notifier_mask) { 1283 k->guest_notifier_mask(vdev, n, true); 1284 } 1285 if (with_irqfd) { 1286 virtio_ccw_remove_irqfd(dev, n); 1287 } 1288 virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); 1289 event_notifier_cleanup(notifier); 1290 } 1291 return 0; 1292 } 1293 1294 static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs, 1295 bool assigned) 1296 { 1297 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1298 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1299 bool with_irqfd = dev->sch->thinint_active && kvm_irqfds_enabled(); 1300 int r, n; 1301 1302 if (with_irqfd && assigned) { 1303 /* irq routes need to be set up before assigning irqfds */ 1304 r = virtio_ccw_setup_irqroutes(dev, nvqs); 1305 if (r < 0) { 1306 goto irqroute_error; 1307 } 1308 } 1309 for (n = 0; n < nvqs; n++) { 1310 if (!virtio_queue_get_num(vdev, n)) { 1311 break; 1312 } 1313 r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd); 1314 if (r < 0) { 1315 goto assign_error; 1316 } 1317 } 1318 if (with_irqfd && !assigned) { 1319 /* release irq routes after irqfds have been released */ 1320 virtio_ccw_release_irqroutes(dev, nvqs); 1321 } 1322 return 0; 1323 1324 assign_error: 1325 while (--n >= 0) { 1326 virtio_ccw_set_guest_notifier(dev, n, !assigned, false); 1327 } 1328 irqroute_error: 1329 if (with_irqfd && assigned) { 1330 virtio_ccw_release_irqroutes(dev, nvqs); 1331 } 1332 return r; 1333 } 1334 1335 static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f) 1336 { 1337 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1338 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1339 1340 qemu_put_be16(f, virtio_queue_vector(vdev, n)); 1341 } 1342 1343 static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f) 1344 { 1345 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1346 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1347 uint16_t vector; 1348 1349 qemu_get_be16s(f, &vector); 1350 virtio_queue_set_vector(vdev, n , vector); 1351 1352 return 0; 1353 } 1354 1355 static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f) 1356 { 1357 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1358 SubchDev *s = dev->sch; 1359 VirtIODevice *vdev = virtio_ccw_get_vdev(s); 1360 1361 subch_device_save(s, f); 1362 if (dev->indicators != NULL) { 1363 qemu_put_be32(f, dev->indicators->len); 1364 qemu_put_be64(f, dev->indicators->addr); 1365 } else { 1366 qemu_put_be32(f, 0); 1367 qemu_put_be64(f, 0UL); 1368 } 1369 if (dev->indicators2 != NULL) { 1370 qemu_put_be32(f, dev->indicators2->len); 1371 qemu_put_be64(f, dev->indicators2->addr); 1372 } else { 1373 qemu_put_be32(f, 0); 1374 qemu_put_be64(f, 0UL); 1375 } 1376 if (dev->summary_indicator != NULL) { 1377 qemu_put_be32(f, dev->summary_indicator->len); 1378 qemu_put_be64(f, dev->summary_indicator->addr); 1379 } else { 1380 qemu_put_be32(f, 0); 1381 qemu_put_be64(f, 0UL); 1382 } 1383 qemu_put_be16(f, vdev->config_vector); 1384 qemu_put_be64(f, dev->routes.adapter.ind_offset); 1385 qemu_put_byte(f, dev->thinint_isc); 1386 qemu_put_be32(f, dev->revision); 1387 } 1388 1389 static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f) 1390 { 1391 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1392 SubchDev *s = dev->sch; 1393 VirtIODevice *vdev = virtio_ccw_get_vdev(s); 1394 int len; 1395 1396 s->driver_data = dev; 1397 subch_device_load(s, f); 1398 len = qemu_get_be32(f); 1399 if (len != 0) { 1400 dev->indicators = get_indicator(qemu_get_be64(f), len); 1401 } else { 1402 qemu_get_be64(f); 1403 dev->indicators = NULL; 1404 } 1405 len = qemu_get_be32(f); 1406 if (len != 0) { 1407 dev->indicators2 = get_indicator(qemu_get_be64(f), len); 1408 } else { 1409 qemu_get_be64(f); 1410 dev->indicators2 = NULL; 1411 } 1412 len = qemu_get_be32(f); 1413 if (len != 0) { 1414 dev->summary_indicator = get_indicator(qemu_get_be64(f), len); 1415 } else { 1416 qemu_get_be64(f); 1417 dev->summary_indicator = NULL; 1418 } 1419 qemu_get_be16s(f, &vdev->config_vector); 1420 dev->routes.adapter.ind_offset = qemu_get_be64(f); 1421 dev->thinint_isc = qemu_get_byte(f); 1422 dev->revision = qemu_get_be32(f); 1423 if (s->thinint_active) { 1424 return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, 1425 dev->thinint_isc, true, false, 1426 &dev->routes.adapter.adapter_id); 1427 } 1428 1429 return 0; 1430 } 1431 1432 /* This is called by virtio-bus just after the device is plugged. */ 1433 static void virtio_ccw_device_plugged(DeviceState *d, Error **errp) 1434 { 1435 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1436 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1437 SubchDev *sch = dev->sch; 1438 int n = virtio_get_num_queues(vdev); 1439 1440 if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) { 1441 error_setg(errp, "The number of virtqueues %d " 1442 "exceeds ccw limit %d", n, 1443 VIRTIO_CCW_QUEUE_MAX); 1444 return; 1445 } 1446 1447 if (!kvm_eventfds_enabled()) { 1448 dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; 1449 } 1450 1451 sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus); 1452 1453 if (dev->max_rev >= 1) { 1454 virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1); 1455 } 1456 1457 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1458 d->hotplugged, 1); 1459 } 1460 1461 static void virtio_ccw_post_plugged(DeviceState *d, Error **errp) 1462 { 1463 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1464 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1465 1466 if (!virtio_host_has_feature(vdev, VIRTIO_F_VERSION_1)) { 1467 /* A backend didn't support modern virtio. */ 1468 dev->max_rev = 0; 1469 } 1470 } 1471 1472 static void virtio_ccw_device_unplugged(DeviceState *d) 1473 { 1474 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1475 1476 virtio_ccw_stop_ioeventfd(dev); 1477 } 1478 /**************** Virtio-ccw Bus Device Descriptions *******************/ 1479 1480 static Property virtio_ccw_net_properties[] = { 1481 DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), 1482 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1483 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1484 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1485 VIRTIO_CCW_MAX_REV), 1486 DEFINE_PROP_END_OF_LIST(), 1487 }; 1488 1489 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) 1490 { 1491 DeviceClass *dc = DEVICE_CLASS(klass); 1492 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1493 1494 k->realize = virtio_ccw_net_realize; 1495 k->exit = virtio_ccw_exit; 1496 dc->reset = virtio_ccw_reset; 1497 dc->props = virtio_ccw_net_properties; 1498 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); 1499 } 1500 1501 static const TypeInfo virtio_ccw_net = { 1502 .name = TYPE_VIRTIO_NET_CCW, 1503 .parent = TYPE_VIRTIO_CCW_DEVICE, 1504 .instance_size = sizeof(VirtIONetCcw), 1505 .instance_init = virtio_ccw_net_instance_init, 1506 .class_init = virtio_ccw_net_class_init, 1507 }; 1508 1509 static Property virtio_ccw_blk_properties[] = { 1510 DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), 1511 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1512 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1513 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1514 VIRTIO_CCW_MAX_REV), 1515 DEFINE_PROP_END_OF_LIST(), 1516 }; 1517 1518 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) 1519 { 1520 DeviceClass *dc = DEVICE_CLASS(klass); 1521 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1522 1523 k->realize = virtio_ccw_blk_realize; 1524 k->exit = virtio_ccw_exit; 1525 dc->reset = virtio_ccw_reset; 1526 dc->props = virtio_ccw_blk_properties; 1527 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1528 } 1529 1530 static const TypeInfo virtio_ccw_blk = { 1531 .name = TYPE_VIRTIO_BLK_CCW, 1532 .parent = TYPE_VIRTIO_CCW_DEVICE, 1533 .instance_size = sizeof(VirtIOBlkCcw), 1534 .instance_init = virtio_ccw_blk_instance_init, 1535 .class_init = virtio_ccw_blk_class_init, 1536 }; 1537 1538 static Property virtio_ccw_serial_properties[] = { 1539 DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), 1540 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1541 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1542 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1543 VIRTIO_CCW_MAX_REV), 1544 DEFINE_PROP_END_OF_LIST(), 1545 }; 1546 1547 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) 1548 { 1549 DeviceClass *dc = DEVICE_CLASS(klass); 1550 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1551 1552 k->realize = virtio_ccw_serial_realize; 1553 k->exit = virtio_ccw_exit; 1554 dc->reset = virtio_ccw_reset; 1555 dc->props = virtio_ccw_serial_properties; 1556 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 1557 } 1558 1559 static const TypeInfo virtio_ccw_serial = { 1560 .name = TYPE_VIRTIO_SERIAL_CCW, 1561 .parent = TYPE_VIRTIO_CCW_DEVICE, 1562 .instance_size = sizeof(VirtioSerialCcw), 1563 .instance_init = virtio_ccw_serial_instance_init, 1564 .class_init = virtio_ccw_serial_class_init, 1565 }; 1566 1567 static Property virtio_ccw_balloon_properties[] = { 1568 DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), 1569 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1570 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1571 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1572 VIRTIO_CCW_MAX_REV), 1573 DEFINE_PROP_END_OF_LIST(), 1574 }; 1575 1576 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) 1577 { 1578 DeviceClass *dc = DEVICE_CLASS(klass); 1579 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1580 1581 k->realize = virtio_ccw_balloon_realize; 1582 k->exit = virtio_ccw_exit; 1583 dc->reset = virtio_ccw_reset; 1584 dc->props = virtio_ccw_balloon_properties; 1585 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1586 } 1587 1588 static const TypeInfo virtio_ccw_balloon = { 1589 .name = TYPE_VIRTIO_BALLOON_CCW, 1590 .parent = TYPE_VIRTIO_CCW_DEVICE, 1591 .instance_size = sizeof(VirtIOBalloonCcw), 1592 .instance_init = virtio_ccw_balloon_instance_init, 1593 .class_init = virtio_ccw_balloon_class_init, 1594 }; 1595 1596 static Property virtio_ccw_scsi_properties[] = { 1597 DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), 1598 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1599 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1600 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1601 VIRTIO_CCW_MAX_REV), 1602 DEFINE_PROP_END_OF_LIST(), 1603 }; 1604 1605 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data) 1606 { 1607 DeviceClass *dc = DEVICE_CLASS(klass); 1608 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1609 1610 k->realize = virtio_ccw_scsi_realize; 1611 k->exit = virtio_ccw_exit; 1612 dc->reset = virtio_ccw_reset; 1613 dc->props = virtio_ccw_scsi_properties; 1614 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1615 } 1616 1617 static const TypeInfo virtio_ccw_scsi = { 1618 .name = TYPE_VIRTIO_SCSI_CCW, 1619 .parent = TYPE_VIRTIO_CCW_DEVICE, 1620 .instance_size = sizeof(VirtIOSCSICcw), 1621 .instance_init = virtio_ccw_scsi_instance_init, 1622 .class_init = virtio_ccw_scsi_class_init, 1623 }; 1624 1625 #ifdef CONFIG_VHOST_SCSI 1626 static Property vhost_ccw_scsi_properties[] = { 1627 DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), 1628 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1629 VIRTIO_CCW_MAX_REV), 1630 DEFINE_PROP_END_OF_LIST(), 1631 }; 1632 1633 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data) 1634 { 1635 DeviceClass *dc = DEVICE_CLASS(klass); 1636 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1637 1638 k->realize = vhost_ccw_scsi_realize; 1639 k->exit = virtio_ccw_exit; 1640 dc->reset = virtio_ccw_reset; 1641 dc->props = vhost_ccw_scsi_properties; 1642 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1643 } 1644 1645 static const TypeInfo vhost_ccw_scsi = { 1646 .name = TYPE_VHOST_SCSI_CCW, 1647 .parent = TYPE_VIRTIO_CCW_DEVICE, 1648 .instance_size = sizeof(VHostSCSICcw), 1649 .instance_init = vhost_ccw_scsi_instance_init, 1650 .class_init = vhost_ccw_scsi_class_init, 1651 }; 1652 #endif 1653 1654 static void virtio_ccw_rng_instance_init(Object *obj) 1655 { 1656 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); 1657 1658 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1659 TYPE_VIRTIO_RNG); 1660 object_property_add_alias(obj, "rng", OBJECT(&dev->vdev), 1661 "rng", &error_abort); 1662 } 1663 1664 static Property virtio_ccw_rng_properties[] = { 1665 DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), 1666 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1667 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1668 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1669 VIRTIO_CCW_MAX_REV), 1670 DEFINE_PROP_END_OF_LIST(), 1671 }; 1672 1673 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) 1674 { 1675 DeviceClass *dc = DEVICE_CLASS(klass); 1676 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1677 1678 k->realize = virtio_ccw_rng_realize; 1679 k->exit = virtio_ccw_exit; 1680 dc->reset = virtio_ccw_reset; 1681 dc->props = virtio_ccw_rng_properties; 1682 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1683 } 1684 1685 static const TypeInfo virtio_ccw_rng = { 1686 .name = TYPE_VIRTIO_RNG_CCW, 1687 .parent = TYPE_VIRTIO_CCW_DEVICE, 1688 .instance_size = sizeof(VirtIORNGCcw), 1689 .instance_init = virtio_ccw_rng_instance_init, 1690 .class_init = virtio_ccw_rng_class_init, 1691 }; 1692 1693 static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp) 1694 { 1695 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1696 1697 virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev); 1698 virtio_ccw_device_realize(_dev, errp); 1699 } 1700 1701 static int virtio_ccw_busdev_exit(DeviceState *dev) 1702 { 1703 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1704 VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 1705 1706 return _info->exit(_dev); 1707 } 1708 1709 static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, 1710 DeviceState *dev, Error **errp) 1711 { 1712 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1713 SubchDev *sch = _dev->sch; 1714 1715 virtio_ccw_stop_ioeventfd(_dev); 1716 1717 /* 1718 * We should arrive here only for device_del, since we don't support 1719 * direct hot(un)plug of channels, but only through virtio. 1720 */ 1721 assert(sch != NULL); 1722 /* Subchannel is now disabled and no longer valid. */ 1723 sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA | 1724 PMCW_FLAGS_MASK_DNV); 1725 1726 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0); 1727 1728 object_unparent(OBJECT(dev)); 1729 } 1730 1731 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) 1732 { 1733 DeviceClass *dc = DEVICE_CLASS(klass); 1734 1735 dc->realize = virtio_ccw_busdev_realize; 1736 dc->exit = virtio_ccw_busdev_exit; 1737 dc->bus_type = TYPE_VIRTUAL_CSS_BUS; 1738 } 1739 1740 static const TypeInfo virtio_ccw_device_info = { 1741 .name = TYPE_VIRTIO_CCW_DEVICE, 1742 .parent = TYPE_DEVICE, 1743 .instance_size = sizeof(VirtioCcwDevice), 1744 .class_init = virtio_ccw_device_class_init, 1745 .class_size = sizeof(VirtIOCCWDeviceClass), 1746 .abstract = true, 1747 }; 1748 1749 /***************** Virtual-css Bus Bridge Device ********************/ 1750 /* Only required to have the virtio bus as child in the system bus */ 1751 1752 static int virtual_css_bridge_init(SysBusDevice *dev) 1753 { 1754 /* nothing */ 1755 return 0; 1756 } 1757 1758 static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) 1759 { 1760 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); 1761 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); 1762 DeviceClass *dc = DEVICE_CLASS(klass); 1763 1764 k->init = virtual_css_bridge_init; 1765 hc->unplug = virtio_ccw_busdev_unplug; 1766 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 1767 } 1768 1769 static const TypeInfo virtual_css_bridge_info = { 1770 .name = "virtual-css-bridge", 1771 .parent = TYPE_SYS_BUS_DEVICE, 1772 .instance_size = sizeof(SysBusDevice), 1773 .class_init = virtual_css_bridge_class_init, 1774 .interfaces = (InterfaceInfo[]) { 1775 { TYPE_HOTPLUG_HANDLER }, 1776 { } 1777 } 1778 }; 1779 1780 /* virtio-ccw-bus */ 1781 1782 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 1783 VirtioCcwDevice *dev) 1784 { 1785 DeviceState *qdev = DEVICE(dev); 1786 char virtio_bus_name[] = "virtio-bus"; 1787 1788 qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS, 1789 qdev, virtio_bus_name); 1790 } 1791 1792 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data) 1793 { 1794 VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); 1795 BusClass *bus_class = BUS_CLASS(klass); 1796 1797 bus_class->max_dev = 1; 1798 k->notify = virtio_ccw_notify; 1799 k->vmstate_change = virtio_ccw_vmstate_change; 1800 k->query_guest_notifiers = virtio_ccw_query_guest_notifiers; 1801 k->set_host_notifier = virtio_ccw_set_host_notifier; 1802 k->set_guest_notifiers = virtio_ccw_set_guest_notifiers; 1803 k->save_queue = virtio_ccw_save_queue; 1804 k->load_queue = virtio_ccw_load_queue; 1805 k->save_config = virtio_ccw_save_config; 1806 k->load_config = virtio_ccw_load_config; 1807 k->device_plugged = virtio_ccw_device_plugged; 1808 k->post_plugged = virtio_ccw_post_plugged; 1809 k->device_unplugged = virtio_ccw_device_unplugged; 1810 } 1811 1812 static const TypeInfo virtio_ccw_bus_info = { 1813 .name = TYPE_VIRTIO_CCW_BUS, 1814 .parent = TYPE_VIRTIO_BUS, 1815 .instance_size = sizeof(VirtioCcwBusState), 1816 .class_init = virtio_ccw_bus_class_init, 1817 }; 1818 1819 #ifdef CONFIG_VIRTFS 1820 static Property virtio_ccw_9p_properties[] = { 1821 DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, bus_id), 1822 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1823 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1824 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1825 VIRTIO_CCW_MAX_REV), 1826 DEFINE_PROP_END_OF_LIST(), 1827 }; 1828 1829 static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1830 { 1831 V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev); 1832 DeviceState *vdev = DEVICE(&dev->vdev); 1833 1834 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1835 object_property_set_bool(OBJECT(vdev), true, "realized", errp); 1836 } 1837 1838 static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data) 1839 { 1840 DeviceClass *dc = DEVICE_CLASS(klass); 1841 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1842 1843 k->exit = virtio_ccw_exit; 1844 k->realize = virtio_ccw_9p_realize; 1845 dc->reset = virtio_ccw_reset; 1846 dc->props = virtio_ccw_9p_properties; 1847 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1848 } 1849 1850 static void virtio_ccw_9p_instance_init(Object *obj) 1851 { 1852 V9fsCCWState *dev = VIRTIO_9P_CCW(obj); 1853 1854 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1855 TYPE_VIRTIO_9P); 1856 } 1857 1858 static const TypeInfo virtio_ccw_9p_info = { 1859 .name = TYPE_VIRTIO_9P_CCW, 1860 .parent = TYPE_VIRTIO_CCW_DEVICE, 1861 .instance_size = sizeof(V9fsCCWState), 1862 .instance_init = virtio_ccw_9p_instance_init, 1863 .class_init = virtio_ccw_9p_class_init, 1864 }; 1865 #endif 1866 1867 static void virtio_ccw_register(void) 1868 { 1869 type_register_static(&virtio_ccw_bus_info); 1870 type_register_static(&virtual_css_bus_info); 1871 type_register_static(&virtio_ccw_device_info); 1872 type_register_static(&virtio_ccw_serial); 1873 type_register_static(&virtio_ccw_blk); 1874 type_register_static(&virtio_ccw_net); 1875 type_register_static(&virtio_ccw_balloon); 1876 type_register_static(&virtio_ccw_scsi); 1877 #ifdef CONFIG_VHOST_SCSI 1878 type_register_static(&vhost_ccw_scsi); 1879 #endif 1880 type_register_static(&virtio_ccw_rng); 1881 type_register_static(&virtual_css_bridge_info); 1882 #ifdef CONFIG_VIRTFS 1883 type_register_static(&virtio_ccw_9p_info); 1884 #endif 1885 } 1886 1887 type_init(virtio_ccw_register) 1888