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 "net/net.h" 20 #include "hw/virtio/virtio.h" 21 #include "hw/virtio/virtio-serial.h" 22 #include "hw/virtio/virtio-net.h" 23 #include "hw/sysbus.h" 24 #include "qemu/bitops.h" 25 #include "qemu/error-report.h" 26 #include "hw/virtio/virtio-access.h" 27 #include "hw/virtio/virtio-bus.h" 28 #include "hw/s390x/adapter.h" 29 #include "hw/s390x/s390_flic.h" 30 31 #include "ioinst.h" 32 #include "css.h" 33 #include "virtio-ccw.h" 34 #include "trace.h" 35 36 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 37 VirtioCcwDevice *dev); 38 39 static void virtual_css_bus_reset(BusState *qbus) 40 { 41 /* This should actually be modelled via the generic css */ 42 css_reset(); 43 } 44 45 46 static void virtual_css_bus_class_init(ObjectClass *klass, void *data) 47 { 48 BusClass *k = BUS_CLASS(klass); 49 50 k->reset = virtual_css_bus_reset; 51 } 52 53 static const TypeInfo virtual_css_bus_info = { 54 .name = TYPE_VIRTUAL_CSS_BUS, 55 .parent = TYPE_BUS, 56 .instance_size = sizeof(VirtualCssBus), 57 .class_init = virtual_css_bus_class_init, 58 }; 59 60 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch) 61 { 62 VirtIODevice *vdev = NULL; 63 VirtioCcwDevice *dev = sch->driver_data; 64 65 if (dev) { 66 vdev = virtio_bus_get_device(&dev->bus); 67 } 68 return vdev; 69 } 70 71 static int virtio_ccw_set_guest2host_notifier(VirtioCcwDevice *dev, int n, 72 bool assign, bool set_handler) 73 { 74 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 75 VirtQueue *vq = virtio_get_queue(vdev, n); 76 EventNotifier *notifier = virtio_queue_get_host_notifier(vq); 77 int r = 0; 78 SubchDev *sch = dev->sch; 79 uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid; 80 81 if (assign) { 82 r = event_notifier_init(notifier, 1); 83 if (r < 0) { 84 error_report("%s: unable to init event notifier: %d", __func__, r); 85 return r; 86 } 87 virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler); 88 r = s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); 89 if (r < 0) { 90 error_report("%s: unable to assign ioeventfd: %d", __func__, r); 91 virtio_queue_set_host_notifier_fd_handler(vq, false, false); 92 event_notifier_cleanup(notifier); 93 return r; 94 } 95 } else { 96 virtio_queue_set_host_notifier_fd_handler(vq, false, false); 97 s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); 98 event_notifier_cleanup(notifier); 99 } 100 return r; 101 } 102 103 static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev) 104 { 105 VirtIODevice *vdev; 106 int n, r; 107 108 if (!(dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) || 109 dev->ioeventfd_disabled || 110 dev->ioeventfd_started) { 111 return; 112 } 113 vdev = virtio_bus_get_device(&dev->bus); 114 for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) { 115 if (!virtio_queue_get_num(vdev, n)) { 116 continue; 117 } 118 r = virtio_ccw_set_guest2host_notifier(dev, n, true, true); 119 if (r < 0) { 120 goto assign_error; 121 } 122 } 123 dev->ioeventfd_started = true; 124 return; 125 126 assign_error: 127 while (--n >= 0) { 128 if (!virtio_queue_get_num(vdev, n)) { 129 continue; 130 } 131 r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); 132 assert(r >= 0); 133 } 134 dev->ioeventfd_started = false; 135 /* Disable ioeventfd for this device. */ 136 dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; 137 error_report("%s: failed. Fallback to userspace (slower).", __func__); 138 } 139 140 static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev) 141 { 142 VirtIODevice *vdev; 143 int n, r; 144 145 if (!dev->ioeventfd_started) { 146 return; 147 } 148 vdev = virtio_bus_get_device(&dev->bus); 149 for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) { 150 if (!virtio_queue_get_num(vdev, n)) { 151 continue; 152 } 153 r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); 154 assert(r >= 0); 155 } 156 dev->ioeventfd_started = false; 157 } 158 159 VirtualCssBus *virtual_css_bus_init(void) 160 { 161 VirtualCssBus *cbus; 162 BusState *bus; 163 DeviceState *dev; 164 165 /* Create bridge device */ 166 dev = qdev_create(NULL, "virtual-css-bridge"); 167 qdev_init_nofail(dev); 168 169 /* Create bus on bridge device */ 170 bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css"); 171 cbus = VIRTUAL_CSS_BUS(bus); 172 173 /* Enable hotplugging */ 174 qbus_set_hotplug_handler(bus, dev, &error_abort); 175 176 return cbus; 177 } 178 179 /* Communication blocks used by several channel commands. */ 180 typedef struct VqInfoBlockLegacy { 181 uint64_t queue; 182 uint32_t align; 183 uint16_t index; 184 uint16_t num; 185 } QEMU_PACKED VqInfoBlockLegacy; 186 187 typedef struct VqInfoBlock { 188 uint64_t desc; 189 uint32_t res0; 190 uint16_t index; 191 uint16_t num; 192 uint64_t avail; 193 uint64_t used; 194 } QEMU_PACKED VqInfoBlock; 195 196 typedef struct VqConfigBlock { 197 uint16_t index; 198 uint16_t num_max; 199 } QEMU_PACKED VqConfigBlock; 200 201 typedef struct VirtioFeatDesc { 202 uint32_t features; 203 uint8_t index; 204 } QEMU_PACKED VirtioFeatDesc; 205 206 typedef struct VirtioThinintInfo { 207 hwaddr summary_indicator; 208 hwaddr device_indicator; 209 uint64_t ind_bit; 210 uint8_t isc; 211 } QEMU_PACKED VirtioThinintInfo; 212 213 typedef struct VirtioRevInfo { 214 uint16_t revision; 215 uint16_t length; 216 uint8_t data[0]; 217 } QEMU_PACKED VirtioRevInfo; 218 219 /* Specify where the virtqueues for the subchannel are in guest memory. */ 220 static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info, 221 VqInfoBlockLegacy *linfo) 222 { 223 VirtIODevice *vdev = virtio_ccw_get_vdev(sch); 224 uint16_t index = info ? info->index : linfo->index; 225 uint16_t num = info ? info->num : linfo->num; 226 uint64_t desc = info ? info->desc : linfo->queue; 227 228 if (index >= VIRTIO_CCW_QUEUE_MAX) { 229 return -EINVAL; 230 } 231 232 /* Current code in virtio.c relies on 4K alignment. */ 233 if (linfo && desc && (linfo->align != 4096)) { 234 return -EINVAL; 235 } 236 237 if (!vdev) { 238 return -EINVAL; 239 } 240 241 if (info) { 242 virtio_queue_set_rings(vdev, index, desc, info->avail, info->used); 243 } else { 244 virtio_queue_set_addr(vdev, index, desc); 245 } 246 if (!desc) { 247 virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR); 248 } else { 249 if (info) { 250 /* virtio-1 allows changing the ring size. */ 251 if (virtio_queue_get_num(vdev, index) < num) { 252 /* Fail if we exceed the maximum number. */ 253 return -EINVAL; 254 } 255 virtio_queue_set_num(vdev, index, num); 256 } else if (virtio_queue_get_num(vdev, index) > num) { 257 /* Fail if we don't have a big enough queue. */ 258 return -EINVAL; 259 } 260 /* We ignore possible increased num for legacy for compatibility. */ 261 virtio_queue_set_vector(vdev, index, index); 262 } 263 /* tell notify handler in case of config change */ 264 vdev->config_vector = VIRTIO_CCW_QUEUE_MAX; 265 return 0; 266 } 267 268 static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev) 269 { 270 virtio_ccw_stop_ioeventfd(dev); 271 virtio_reset(vdev); 272 if (dev->indicators) { 273 release_indicator(&dev->routes.adapter, dev->indicators); 274 dev->indicators = NULL; 275 } 276 if (dev->indicators2) { 277 release_indicator(&dev->routes.adapter, dev->indicators2); 278 dev->indicators2 = NULL; 279 } 280 if (dev->summary_indicator) { 281 release_indicator(&dev->routes.adapter, dev->summary_indicator); 282 dev->summary_indicator = NULL; 283 } 284 dev->sch->thinint_active = false; 285 } 286 287 static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len, 288 bool is_legacy) 289 { 290 int ret; 291 VqInfoBlock info; 292 VqInfoBlockLegacy linfo; 293 size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info); 294 295 if (check_len) { 296 if (ccw.count != info_len) { 297 return -EINVAL; 298 } 299 } else if (ccw.count < info_len) { 300 /* Can't execute command. */ 301 return -EINVAL; 302 } 303 if (!ccw.cda) { 304 return -EFAULT; 305 } 306 if (is_legacy) { 307 linfo.queue = address_space_ldq_be(&address_space_memory, ccw.cda, 308 MEMTXATTRS_UNSPECIFIED, NULL); 309 linfo.align = address_space_ldl_be(&address_space_memory, 310 ccw.cda + sizeof(linfo.queue), 311 MEMTXATTRS_UNSPECIFIED, 312 NULL); 313 linfo.index = address_space_lduw_be(&address_space_memory, 314 ccw.cda + sizeof(linfo.queue) 315 + sizeof(linfo.align), 316 MEMTXATTRS_UNSPECIFIED, 317 NULL); 318 linfo.num = address_space_lduw_be(&address_space_memory, 319 ccw.cda + sizeof(linfo.queue) 320 + sizeof(linfo.align) 321 + sizeof(linfo.index), 322 MEMTXATTRS_UNSPECIFIED, 323 NULL); 324 ret = virtio_ccw_set_vqs(sch, NULL, &linfo); 325 } else { 326 info.desc = address_space_ldq_be(&address_space_memory, ccw.cda, 327 MEMTXATTRS_UNSPECIFIED, NULL); 328 info.index = address_space_lduw_be(&address_space_memory, 329 ccw.cda + sizeof(info.desc) 330 + sizeof(info.res0), 331 MEMTXATTRS_UNSPECIFIED, NULL); 332 info.num = address_space_lduw_be(&address_space_memory, 333 ccw.cda + sizeof(info.desc) 334 + sizeof(info.res0) 335 + sizeof(info.index), 336 MEMTXATTRS_UNSPECIFIED, NULL); 337 info.avail = address_space_ldq_be(&address_space_memory, 338 ccw.cda + sizeof(info.desc) 339 + sizeof(info.res0) 340 + sizeof(info.index) 341 + sizeof(info.num), 342 MEMTXATTRS_UNSPECIFIED, NULL); 343 info.used = address_space_ldq_be(&address_space_memory, 344 ccw.cda + sizeof(info.desc) 345 + sizeof(info.res0) 346 + sizeof(info.index) 347 + sizeof(info.num) 348 + sizeof(info.avail), 349 MEMTXATTRS_UNSPECIFIED, NULL); 350 ret = virtio_ccw_set_vqs(sch, &info, NULL); 351 } 352 sch->curr_status.scsw.count = 0; 353 return ret; 354 } 355 356 static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) 357 { 358 int ret; 359 VirtioRevInfo revinfo; 360 uint8_t status; 361 VirtioFeatDesc features; 362 void *config; 363 hwaddr indicators; 364 VqConfigBlock vq_config; 365 VirtioCcwDevice *dev = sch->driver_data; 366 VirtIODevice *vdev = virtio_ccw_get_vdev(sch); 367 bool check_len; 368 int len; 369 hwaddr hw_len; 370 VirtioThinintInfo *thinint; 371 372 if (!dev) { 373 return -EINVAL; 374 } 375 376 trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid, 377 ccw.cmd_code); 378 check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC)); 379 380 /* Look at the command. */ 381 switch (ccw.cmd_code) { 382 case CCW_CMD_SET_VQ: 383 ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1); 384 break; 385 case CCW_CMD_VDEV_RESET: 386 virtio_ccw_reset_virtio(dev, vdev); 387 ret = 0; 388 break; 389 case CCW_CMD_READ_FEAT: 390 if (check_len) { 391 if (ccw.count != sizeof(features)) { 392 ret = -EINVAL; 393 break; 394 } 395 } else if (ccw.count < sizeof(features)) { 396 /* Can't execute command. */ 397 ret = -EINVAL; 398 break; 399 } 400 if (!ccw.cda) { 401 ret = -EFAULT; 402 } else { 403 features.index = address_space_ldub(&address_space_memory, 404 ccw.cda 405 + sizeof(features.features), 406 MEMTXATTRS_UNSPECIFIED, 407 NULL); 408 if (features.index == 0) { 409 if (dev->revision >= 1) { 410 /* Don't offer legacy features for modern devices. */ 411 features.features = (uint32_t) 412 (vdev->host_features & ~VIRTIO_LEGACY_FEATURES); 413 } else { 414 features.features = (uint32_t)vdev->host_features; 415 } 416 } else if ((features.index == 1) && (dev->revision >= 1)) { 417 /* 418 * Only offer feature bits beyond 31 if the guest has 419 * negotiated at least revision 1. 420 */ 421 features.features = (uint32_t)(vdev->host_features >> 32); 422 } else { 423 /* Return zeroes if the guest supports more feature bits. */ 424 features.features = 0; 425 } 426 address_space_stl_le(&address_space_memory, ccw.cda, 427 features.features, MEMTXATTRS_UNSPECIFIED, 428 NULL); 429 sch->curr_status.scsw.count = ccw.count - sizeof(features); 430 ret = 0; 431 } 432 break; 433 case CCW_CMD_WRITE_FEAT: 434 if (check_len) { 435 if (ccw.count != sizeof(features)) { 436 ret = -EINVAL; 437 break; 438 } 439 } else if (ccw.count < sizeof(features)) { 440 /* Can't execute command. */ 441 ret = -EINVAL; 442 break; 443 } 444 if (!ccw.cda) { 445 ret = -EFAULT; 446 } else { 447 features.index = address_space_ldub(&address_space_memory, 448 ccw.cda 449 + sizeof(features.features), 450 MEMTXATTRS_UNSPECIFIED, 451 NULL); 452 features.features = address_space_ldl_le(&address_space_memory, 453 ccw.cda, 454 MEMTXATTRS_UNSPECIFIED, 455 NULL); 456 if (features.index == 0) { 457 virtio_set_features(vdev, 458 (vdev->guest_features & 0xffffffff00000000ULL) | 459 features.features); 460 } else if ((features.index == 1) && (dev->revision >= 1)) { 461 /* 462 * If the guest did not negotiate at least revision 1, 463 * we did not offer it any feature bits beyond 31. Such a 464 * guest passing us any bit here is therefore buggy. 465 */ 466 virtio_set_features(vdev, 467 (vdev->guest_features & 0x00000000ffffffffULL) | 468 ((uint64_t)features.features << 32)); 469 } else { 470 /* 471 * If the guest supports more feature bits, assert that it 472 * passes us zeroes for those we don't support. 473 */ 474 if (features.features) { 475 fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n", 476 features.index, features.features); 477 /* XXX: do a unit check here? */ 478 } 479 } 480 sch->curr_status.scsw.count = ccw.count - sizeof(features); 481 ret = 0; 482 } 483 break; 484 case CCW_CMD_READ_CONF: 485 if (check_len) { 486 if (ccw.count > vdev->config_len) { 487 ret = -EINVAL; 488 break; 489 } 490 } 491 len = MIN(ccw.count, vdev->config_len); 492 if (!ccw.cda) { 493 ret = -EFAULT; 494 } else { 495 virtio_bus_get_vdev_config(&dev->bus, vdev->config); 496 /* XXX config space endianness */ 497 cpu_physical_memory_write(ccw.cda, vdev->config, len); 498 sch->curr_status.scsw.count = ccw.count - len; 499 ret = 0; 500 } 501 break; 502 case CCW_CMD_WRITE_CONF: 503 if (check_len) { 504 if (ccw.count > vdev->config_len) { 505 ret = -EINVAL; 506 break; 507 } 508 } 509 len = MIN(ccw.count, vdev->config_len); 510 hw_len = len; 511 if (!ccw.cda) { 512 ret = -EFAULT; 513 } else { 514 config = cpu_physical_memory_map(ccw.cda, &hw_len, 0); 515 if (!config) { 516 ret = -EFAULT; 517 } else { 518 len = hw_len; 519 /* XXX config space endianness */ 520 memcpy(vdev->config, config, len); 521 cpu_physical_memory_unmap(config, hw_len, 0, hw_len); 522 virtio_bus_set_vdev_config(&dev->bus, vdev->config); 523 sch->curr_status.scsw.count = ccw.count - len; 524 ret = 0; 525 } 526 } 527 break; 528 case CCW_CMD_WRITE_STATUS: 529 if (check_len) { 530 if (ccw.count != sizeof(status)) { 531 ret = -EINVAL; 532 break; 533 } 534 } else if (ccw.count < sizeof(status)) { 535 /* Can't execute command. */ 536 ret = -EINVAL; 537 break; 538 } 539 if (!ccw.cda) { 540 ret = -EFAULT; 541 } else { 542 status = address_space_ldub(&address_space_memory, ccw.cda, 543 MEMTXATTRS_UNSPECIFIED, NULL); 544 if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) { 545 virtio_ccw_stop_ioeventfd(dev); 546 } 547 if (virtio_set_status(vdev, status) == 0) { 548 if (vdev->status == 0) { 549 virtio_ccw_reset_virtio(dev, vdev); 550 } 551 if (status & VIRTIO_CONFIG_S_DRIVER_OK) { 552 virtio_ccw_start_ioeventfd(dev); 553 } 554 sch->curr_status.scsw.count = ccw.count - sizeof(status); 555 ret = 0; 556 } else { 557 /* Trigger a command reject. */ 558 ret = -ENOSYS; 559 } 560 } 561 break; 562 case CCW_CMD_SET_IND: 563 if (check_len) { 564 if (ccw.count != sizeof(indicators)) { 565 ret = -EINVAL; 566 break; 567 } 568 } else if (ccw.count < sizeof(indicators)) { 569 /* Can't execute command. */ 570 ret = -EINVAL; 571 break; 572 } 573 if (sch->thinint_active) { 574 /* Trigger a command reject. */ 575 ret = -ENOSYS; 576 break; 577 } 578 if (!ccw.cda) { 579 ret = -EFAULT; 580 } else { 581 indicators = address_space_ldq_be(&address_space_memory, ccw.cda, 582 MEMTXATTRS_UNSPECIFIED, NULL); 583 dev->indicators = get_indicator(indicators, sizeof(uint64_t)); 584 sch->curr_status.scsw.count = ccw.count - sizeof(indicators); 585 ret = 0; 586 } 587 break; 588 case CCW_CMD_SET_CONF_IND: 589 if (check_len) { 590 if (ccw.count != sizeof(indicators)) { 591 ret = -EINVAL; 592 break; 593 } 594 } else if (ccw.count < sizeof(indicators)) { 595 /* Can't execute command. */ 596 ret = -EINVAL; 597 break; 598 } 599 if (!ccw.cda) { 600 ret = -EFAULT; 601 } else { 602 indicators = address_space_ldq_be(&address_space_memory, ccw.cda, 603 MEMTXATTRS_UNSPECIFIED, NULL); 604 dev->indicators2 = get_indicator(indicators, sizeof(uint64_t)); 605 sch->curr_status.scsw.count = ccw.count - sizeof(indicators); 606 ret = 0; 607 } 608 break; 609 case CCW_CMD_READ_VQ_CONF: 610 if (check_len) { 611 if (ccw.count != sizeof(vq_config)) { 612 ret = -EINVAL; 613 break; 614 } 615 } else if (ccw.count < sizeof(vq_config)) { 616 /* Can't execute command. */ 617 ret = -EINVAL; 618 break; 619 } 620 if (!ccw.cda) { 621 ret = -EFAULT; 622 } else { 623 vq_config.index = address_space_lduw_be(&address_space_memory, 624 ccw.cda, 625 MEMTXATTRS_UNSPECIFIED, 626 NULL); 627 if (vq_config.index >= VIRTIO_CCW_QUEUE_MAX) { 628 ret = -EINVAL; 629 break; 630 } 631 vq_config.num_max = virtio_queue_get_num(vdev, 632 vq_config.index); 633 address_space_stw_be(&address_space_memory, 634 ccw.cda + sizeof(vq_config.index), 635 vq_config.num_max, 636 MEMTXATTRS_UNSPECIFIED, 637 NULL); 638 sch->curr_status.scsw.count = ccw.count - sizeof(vq_config); 639 ret = 0; 640 } 641 break; 642 case CCW_CMD_SET_IND_ADAPTER: 643 if (check_len) { 644 if (ccw.count != sizeof(*thinint)) { 645 ret = -EINVAL; 646 break; 647 } 648 } else if (ccw.count < sizeof(*thinint)) { 649 /* Can't execute command. */ 650 ret = -EINVAL; 651 break; 652 } 653 len = sizeof(*thinint); 654 hw_len = len; 655 if (!ccw.cda) { 656 ret = -EFAULT; 657 } else if (dev->indicators && !sch->thinint_active) { 658 /* Trigger a command reject. */ 659 ret = -ENOSYS; 660 } else { 661 thinint = cpu_physical_memory_map(ccw.cda, &hw_len, 0); 662 if (!thinint) { 663 ret = -EFAULT; 664 } else { 665 uint64_t ind_bit = ldq_be_p(&thinint->ind_bit); 666 667 len = hw_len; 668 dev->summary_indicator = 669 get_indicator(ldq_be_p(&thinint->summary_indicator), 670 sizeof(uint8_t)); 671 dev->indicators = 672 get_indicator(ldq_be_p(&thinint->device_indicator), 673 ind_bit / 8 + 1); 674 dev->thinint_isc = thinint->isc; 675 dev->routes.adapter.ind_offset = ind_bit; 676 dev->routes.adapter.summary_offset = 7; 677 cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len); 678 ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, 679 dev->thinint_isc, true, false, 680 &dev->routes.adapter.adapter_id); 681 assert(ret == 0); 682 sch->thinint_active = ((dev->indicators != NULL) && 683 (dev->summary_indicator != NULL)); 684 sch->curr_status.scsw.count = ccw.count - len; 685 ret = 0; 686 } 687 } 688 break; 689 case CCW_CMD_SET_VIRTIO_REV: 690 len = sizeof(revinfo); 691 if (ccw.count < len) { 692 ret = -EINVAL; 693 break; 694 } 695 if (!ccw.cda) { 696 ret = -EFAULT; 697 break; 698 } 699 revinfo.revision = 700 address_space_lduw_be(&address_space_memory, ccw.cda, 701 MEMTXATTRS_UNSPECIFIED, NULL); 702 revinfo.length = 703 address_space_lduw_be(&address_space_memory, 704 ccw.cda + sizeof(revinfo.revision), 705 MEMTXATTRS_UNSPECIFIED, NULL); 706 if (ccw.count < len + revinfo.length || 707 (check_len && ccw.count > len + revinfo.length)) { 708 ret = -EINVAL; 709 break; 710 } 711 /* 712 * Once we start to support revisions with additional data, we'll 713 * need to fetch it here. Nothing to do for now, though. 714 */ 715 if (dev->revision >= 0 || 716 revinfo.revision > virtio_ccw_rev_max(dev)) { 717 ret = -ENOSYS; 718 break; 719 } 720 ret = 0; 721 dev->revision = revinfo.revision; 722 break; 723 default: 724 ret = -ENOSYS; 725 break; 726 } 727 return ret; 728 } 729 730 static void virtio_sch_disable_cb(SubchDev *sch) 731 { 732 VirtioCcwDevice *dev = sch->driver_data; 733 734 dev->revision = -1; 735 } 736 737 static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp) 738 { 739 unsigned int cssid = 0; 740 unsigned int ssid = 0; 741 unsigned int schid; 742 unsigned int devno; 743 bool have_devno = false; 744 bool found = false; 745 SubchDev *sch; 746 int num; 747 Error *err = NULL; 748 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 749 750 sch = g_malloc0(sizeof(SubchDev)); 751 752 sch->driver_data = dev; 753 dev->sch = sch; 754 755 dev->indicators = NULL; 756 757 /* Initialize subchannel structure. */ 758 sch->channel_prog = 0x0; 759 sch->last_cmd_valid = false; 760 sch->thinint_active = false; 761 /* 762 * Use a device number if provided. Otherwise, fall back to subchannel 763 * number. 764 */ 765 if (dev->bus_id) { 766 num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno); 767 if (num == 3) { 768 if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) { 769 error_setg(errp, "Invalid cssid or ssid: cssid %x, ssid %x", 770 cssid, ssid); 771 goto out_err; 772 } 773 /* Enforce use of virtual cssid. */ 774 if (cssid != VIRTUAL_CSSID) { 775 error_setg(errp, "cssid %x not valid for virtio devices", 776 cssid); 777 goto out_err; 778 } 779 if (css_devno_used(cssid, ssid, devno)) { 780 error_setg(errp, "Device %x.%x.%04x already exists", 781 cssid, ssid, devno); 782 goto out_err; 783 } 784 sch->cssid = cssid; 785 sch->ssid = ssid; 786 sch->devno = devno; 787 have_devno = true; 788 } else { 789 error_setg(errp, "Malformed devno parameter '%s'", dev->bus_id); 790 goto out_err; 791 } 792 } 793 794 /* Find the next free id. */ 795 if (have_devno) { 796 for (schid = 0; schid <= MAX_SCHID; schid++) { 797 if (!css_find_subch(1, cssid, ssid, schid)) { 798 sch->schid = schid; 799 css_subch_assign(cssid, ssid, schid, devno, sch); 800 found = true; 801 break; 802 } 803 } 804 if (!found) { 805 error_setg(errp, "No free subchannel found for %x.%x.%04x", 806 cssid, ssid, devno); 807 goto out_err; 808 } 809 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 810 "user-configured"); 811 } else { 812 cssid = VIRTUAL_CSSID; 813 for (ssid = 0; ssid <= MAX_SSID; ssid++) { 814 for (schid = 0; schid <= MAX_SCHID; schid++) { 815 if (!css_find_subch(1, cssid, ssid, schid)) { 816 sch->cssid = cssid; 817 sch->ssid = ssid; 818 sch->schid = schid; 819 devno = schid; 820 /* 821 * If the devno is already taken, look further in this 822 * subchannel set. 823 */ 824 while (css_devno_used(cssid, ssid, devno)) { 825 if (devno == MAX_SCHID) { 826 devno = 0; 827 } else if (devno == schid - 1) { 828 error_setg(errp, "No free devno found"); 829 goto out_err; 830 } else { 831 devno++; 832 } 833 } 834 sch->devno = devno; 835 css_subch_assign(cssid, ssid, schid, devno, sch); 836 found = true; 837 break; 838 } 839 } 840 if (found) { 841 break; 842 } 843 } 844 if (!found) { 845 error_setg(errp, "Virtual channel subsystem is full!"); 846 goto out_err; 847 } 848 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 849 "auto-configured"); 850 } 851 852 /* Build initial schib. */ 853 css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE); 854 855 sch->ccw_cb = virtio_ccw_cb; 856 sch->disable_cb = virtio_sch_disable_cb; 857 858 /* Build senseid data. */ 859 memset(&sch->id, 0, sizeof(SenseId)); 860 sch->id.reserved = 0xff; 861 sch->id.cu_type = VIRTIO_CCW_CU_TYPE; 862 863 dev->revision = -1; 864 865 if (k->realize) { 866 k->realize(dev, &err); 867 } 868 if (err) { 869 error_propagate(errp, err); 870 css_subch_assign(cssid, ssid, schid, devno, NULL); 871 goto out_err; 872 } 873 874 return; 875 876 out_err: 877 dev->sch = NULL; 878 g_free(sch); 879 } 880 881 static int virtio_ccw_exit(VirtioCcwDevice *dev) 882 { 883 SubchDev *sch = dev->sch; 884 885 if (sch) { 886 css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); 887 g_free(sch); 888 } 889 if (dev->indicators) { 890 release_indicator(&dev->routes.adapter, dev->indicators); 891 dev->indicators = NULL; 892 } 893 return 0; 894 } 895 896 static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp) 897 { 898 DeviceState *qdev = DEVICE(ccw_dev); 899 VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); 900 DeviceState *vdev = DEVICE(&dev->vdev); 901 Error *err = NULL; 902 903 virtio_net_set_netclient_name(&dev->vdev, qdev->id, 904 object_get_typename(OBJECT(qdev))); 905 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 906 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 907 if (err) { 908 error_propagate(errp, err); 909 } 910 } 911 912 static void virtio_ccw_net_instance_init(Object *obj) 913 { 914 VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); 915 916 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 917 TYPE_VIRTIO_NET); 918 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 919 "bootindex", &error_abort); 920 } 921 922 static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp) 923 { 924 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); 925 DeviceState *vdev = DEVICE(&dev->vdev); 926 Error *err = NULL; 927 928 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 929 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 930 if (err) { 931 error_propagate(errp, err); 932 } 933 } 934 935 static void virtio_ccw_blk_instance_init(Object *obj) 936 { 937 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); 938 939 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 940 TYPE_VIRTIO_BLK); 941 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread", 942 &error_abort); 943 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 944 "bootindex", &error_abort); 945 } 946 947 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp) 948 { 949 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); 950 DeviceState *vdev = DEVICE(&dev->vdev); 951 DeviceState *proxy = DEVICE(ccw_dev); 952 Error *err = NULL; 953 char *bus_name; 954 955 /* 956 * For command line compatibility, this sets the virtio-serial-device bus 957 * name as before. 958 */ 959 if (proxy->id) { 960 bus_name = g_strdup_printf("%s.0", proxy->id); 961 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 962 g_free(bus_name); 963 } 964 965 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 966 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 967 if (err) { 968 error_propagate(errp, err); 969 } 970 } 971 972 973 static void virtio_ccw_serial_instance_init(Object *obj) 974 { 975 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); 976 977 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 978 TYPE_VIRTIO_SERIAL); 979 } 980 981 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp) 982 { 983 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); 984 DeviceState *vdev = DEVICE(&dev->vdev); 985 Error *err = NULL; 986 987 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 988 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 989 if (err) { 990 error_propagate(errp, err); 991 } 992 } 993 994 static void virtio_ccw_balloon_instance_init(Object *obj) 995 { 996 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); 997 998 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 999 TYPE_VIRTIO_BALLOON); 1000 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev), 1001 "guest-stats", &error_abort); 1002 object_property_add_alias(obj, "guest-stats-polling-interval", 1003 OBJECT(&dev->vdev), 1004 "guest-stats-polling-interval", &error_abort); 1005 } 1006 1007 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1008 { 1009 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); 1010 DeviceState *vdev = DEVICE(&dev->vdev); 1011 DeviceState *qdev = DEVICE(ccw_dev); 1012 Error *err = NULL; 1013 char *bus_name; 1014 1015 /* 1016 * For command line compatibility, this sets the virtio-scsi-device bus 1017 * name as before. 1018 */ 1019 if (qdev->id) { 1020 bus_name = g_strdup_printf("%s.0", qdev->id); 1021 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 1022 g_free(bus_name); 1023 } 1024 1025 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1026 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1027 if (err) { 1028 error_propagate(errp, err); 1029 } 1030 } 1031 1032 static void virtio_ccw_scsi_instance_init(Object *obj) 1033 { 1034 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); 1035 1036 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1037 TYPE_VIRTIO_SCSI); 1038 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread", 1039 &error_abort); 1040 } 1041 1042 #ifdef CONFIG_VHOST_SCSI 1043 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1044 { 1045 VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); 1046 DeviceState *vdev = DEVICE(&dev->vdev); 1047 Error *err = NULL; 1048 1049 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1050 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1051 if (err) { 1052 error_propagate(errp, err); 1053 } 1054 } 1055 1056 static void vhost_ccw_scsi_instance_init(Object *obj) 1057 { 1058 VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); 1059 1060 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1061 TYPE_VHOST_SCSI); 1062 } 1063 #endif 1064 1065 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1066 { 1067 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); 1068 DeviceState *vdev = DEVICE(&dev->vdev); 1069 Error *err = NULL; 1070 1071 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1072 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1073 if (err) { 1074 error_propagate(errp, err); 1075 return; 1076 } 1077 1078 object_property_set_link(OBJECT(dev), 1079 OBJECT(dev->vdev.conf.rng), "rng", 1080 NULL); 1081 } 1082 1083 /* DeviceState to VirtioCcwDevice. Note: used on datapath, 1084 * be careful and test performance if you change this. 1085 */ 1086 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) 1087 { 1088 return container_of(d, VirtioCcwDevice, parent_obj); 1089 } 1090 1091 static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc, 1092 uint8_t to_be_set) 1093 { 1094 uint8_t ind_old, ind_new; 1095 hwaddr len = 1; 1096 uint8_t *ind_addr; 1097 1098 ind_addr = cpu_physical_memory_map(ind_loc, &len, 1); 1099 if (!ind_addr) { 1100 error_report("%s(%x.%x.%04x): unable to access indicator", 1101 __func__, sch->cssid, sch->ssid, sch->schid); 1102 return -1; 1103 } 1104 do { 1105 ind_old = *ind_addr; 1106 ind_new = ind_old | to_be_set; 1107 } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old); 1108 cpu_physical_memory_unmap(ind_addr, len, 1, len); 1109 1110 return ind_old; 1111 } 1112 1113 static void virtio_ccw_notify(DeviceState *d, uint16_t vector) 1114 { 1115 VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); 1116 SubchDev *sch = dev->sch; 1117 uint64_t indicators; 1118 1119 /* queue indicators + secondary indicators */ 1120 if (vector >= VIRTIO_CCW_QUEUE_MAX + 64) { 1121 return; 1122 } 1123 1124 if (vector < VIRTIO_CCW_QUEUE_MAX) { 1125 if (!dev->indicators) { 1126 return; 1127 } 1128 if (sch->thinint_active) { 1129 /* 1130 * In the adapter interrupt case, indicators points to a 1131 * memory area that may be (way) larger than 64 bit and 1132 * ind_bit indicates the start of the indicators in a big 1133 * endian notation. 1134 */ 1135 uint64_t ind_bit = dev->routes.adapter.ind_offset; 1136 1137 virtio_set_ind_atomic(sch, dev->indicators->addr + 1138 (ind_bit + vector) / 8, 1139 0x80 >> ((ind_bit + vector) % 8)); 1140 if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr, 1141 0x01)) { 1142 css_adapter_interrupt(dev->thinint_isc); 1143 } 1144 } else { 1145 indicators = address_space_ldq(&address_space_memory, 1146 dev->indicators->addr, 1147 MEMTXATTRS_UNSPECIFIED, 1148 NULL); 1149 indicators |= 1ULL << vector; 1150 address_space_stq(&address_space_memory, dev->indicators->addr, 1151 indicators, MEMTXATTRS_UNSPECIFIED, NULL); 1152 css_conditional_io_interrupt(sch); 1153 } 1154 } else { 1155 if (!dev->indicators2) { 1156 return; 1157 } 1158 vector = 0; 1159 indicators = address_space_ldq(&address_space_memory, 1160 dev->indicators2->addr, 1161 MEMTXATTRS_UNSPECIFIED, 1162 NULL); 1163 indicators |= 1ULL << vector; 1164 address_space_stq(&address_space_memory, dev->indicators2->addr, 1165 indicators, MEMTXATTRS_UNSPECIFIED, NULL); 1166 css_conditional_io_interrupt(sch); 1167 } 1168 } 1169 1170 static void virtio_ccw_reset(DeviceState *d) 1171 { 1172 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1173 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1174 1175 virtio_ccw_reset_virtio(dev, vdev); 1176 css_reset_sch(dev->sch); 1177 } 1178 1179 static void virtio_ccw_vmstate_change(DeviceState *d, bool running) 1180 { 1181 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1182 1183 if (running) { 1184 virtio_ccw_start_ioeventfd(dev); 1185 } else { 1186 virtio_ccw_stop_ioeventfd(dev); 1187 } 1188 } 1189 1190 static bool virtio_ccw_query_guest_notifiers(DeviceState *d) 1191 { 1192 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1193 1194 return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA); 1195 } 1196 1197 static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign) 1198 { 1199 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1200 1201 /* Stop using the generic ioeventfd, we are doing eventfd handling 1202 * ourselves below */ 1203 dev->ioeventfd_disabled = assign; 1204 if (assign) { 1205 virtio_ccw_stop_ioeventfd(dev); 1206 } 1207 return virtio_ccw_set_guest2host_notifier(dev, n, assign, false); 1208 } 1209 1210 static int virtio_ccw_get_mappings(VirtioCcwDevice *dev) 1211 { 1212 int r; 1213 1214 if (!dev->sch->thinint_active) { 1215 return -EINVAL; 1216 } 1217 1218 r = map_indicator(&dev->routes.adapter, dev->summary_indicator); 1219 if (r) { 1220 return r; 1221 } 1222 r = map_indicator(&dev->routes.adapter, dev->indicators); 1223 if (r) { 1224 return r; 1225 } 1226 dev->routes.adapter.summary_addr = dev->summary_indicator->map; 1227 dev->routes.adapter.ind_addr = dev->indicators->map; 1228 1229 return 0; 1230 } 1231 1232 static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs) 1233 { 1234 int i; 1235 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1236 int ret; 1237 S390FLICState *fs = s390_get_flic(); 1238 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 1239 1240 ret = virtio_ccw_get_mappings(dev); 1241 if (ret) { 1242 return ret; 1243 } 1244 for (i = 0; i < nvqs; i++) { 1245 if (!virtio_queue_get_num(vdev, i)) { 1246 break; 1247 } 1248 } 1249 dev->routes.num_routes = i; 1250 return fsc->add_adapter_routes(fs, &dev->routes); 1251 } 1252 1253 static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs) 1254 { 1255 S390FLICState *fs = s390_get_flic(); 1256 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 1257 1258 fsc->release_adapter_routes(fs, &dev->routes); 1259 } 1260 1261 static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n) 1262 { 1263 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1264 VirtQueue *vq = virtio_get_queue(vdev, n); 1265 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1266 1267 return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL, 1268 dev->routes.gsi[n]); 1269 } 1270 1271 static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n) 1272 { 1273 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1274 VirtQueue *vq = virtio_get_queue(vdev, n); 1275 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1276 int ret; 1277 1278 ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier, 1279 dev->routes.gsi[n]); 1280 assert(ret == 0); 1281 } 1282 1283 static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n, 1284 bool assign, bool with_irqfd) 1285 { 1286 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1287 VirtQueue *vq = virtio_get_queue(vdev, n); 1288 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1289 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); 1290 1291 if (assign) { 1292 int r = event_notifier_init(notifier, 0); 1293 1294 if (r < 0) { 1295 return r; 1296 } 1297 virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); 1298 if (with_irqfd) { 1299 r = virtio_ccw_add_irqfd(dev, n); 1300 if (r) { 1301 virtio_queue_set_guest_notifier_fd_handler(vq, false, 1302 with_irqfd); 1303 return r; 1304 } 1305 } 1306 /* 1307 * We do not support individual masking for channel devices, so we 1308 * need to manually trigger any guest masking callbacks here. 1309 */ 1310 if (k->guest_notifier_mask) { 1311 k->guest_notifier_mask(vdev, n, false); 1312 } 1313 /* get lost events and re-inject */ 1314 if (k->guest_notifier_pending && 1315 k->guest_notifier_pending(vdev, n)) { 1316 event_notifier_set(notifier); 1317 } 1318 } else { 1319 if (k->guest_notifier_mask) { 1320 k->guest_notifier_mask(vdev, n, true); 1321 } 1322 if (with_irqfd) { 1323 virtio_ccw_remove_irqfd(dev, n); 1324 } 1325 virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); 1326 event_notifier_cleanup(notifier); 1327 } 1328 return 0; 1329 } 1330 1331 static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs, 1332 bool assigned) 1333 { 1334 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1335 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1336 bool with_irqfd = dev->sch->thinint_active && kvm_irqfds_enabled(); 1337 int r, n; 1338 1339 if (with_irqfd && assigned) { 1340 /* irq routes need to be set up before assigning irqfds */ 1341 r = virtio_ccw_setup_irqroutes(dev, nvqs); 1342 if (r < 0) { 1343 goto irqroute_error; 1344 } 1345 } 1346 for (n = 0; n < nvqs; n++) { 1347 if (!virtio_queue_get_num(vdev, n)) { 1348 break; 1349 } 1350 r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd); 1351 if (r < 0) { 1352 goto assign_error; 1353 } 1354 } 1355 if (with_irqfd && !assigned) { 1356 /* release irq routes after irqfds have been released */ 1357 virtio_ccw_release_irqroutes(dev, nvqs); 1358 } 1359 return 0; 1360 1361 assign_error: 1362 while (--n >= 0) { 1363 virtio_ccw_set_guest_notifier(dev, n, !assigned, false); 1364 } 1365 irqroute_error: 1366 if (with_irqfd && assigned) { 1367 virtio_ccw_release_irqroutes(dev, nvqs); 1368 } 1369 return r; 1370 } 1371 1372 static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f) 1373 { 1374 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1375 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1376 1377 qemu_put_be16(f, virtio_queue_vector(vdev, n)); 1378 } 1379 1380 static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f) 1381 { 1382 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1383 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1384 uint16_t vector; 1385 1386 qemu_get_be16s(f, &vector); 1387 virtio_queue_set_vector(vdev, n , vector); 1388 1389 return 0; 1390 } 1391 1392 static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f) 1393 { 1394 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1395 SubchDev *s = dev->sch; 1396 VirtIODevice *vdev = virtio_ccw_get_vdev(s); 1397 1398 subch_device_save(s, f); 1399 if (dev->indicators != NULL) { 1400 qemu_put_be32(f, dev->indicators->len); 1401 qemu_put_be64(f, dev->indicators->addr); 1402 } else { 1403 qemu_put_be32(f, 0); 1404 qemu_put_be64(f, 0UL); 1405 } 1406 if (dev->indicators2 != NULL) { 1407 qemu_put_be32(f, dev->indicators2->len); 1408 qemu_put_be64(f, dev->indicators2->addr); 1409 } else { 1410 qemu_put_be32(f, 0); 1411 qemu_put_be64(f, 0UL); 1412 } 1413 if (dev->summary_indicator != NULL) { 1414 qemu_put_be32(f, dev->summary_indicator->len); 1415 qemu_put_be64(f, dev->summary_indicator->addr); 1416 } else { 1417 qemu_put_be32(f, 0); 1418 qemu_put_be64(f, 0UL); 1419 } 1420 qemu_put_be16(f, vdev->config_vector); 1421 qemu_put_be64(f, dev->routes.adapter.ind_offset); 1422 qemu_put_byte(f, dev->thinint_isc); 1423 qemu_put_be32(f, dev->revision); 1424 } 1425 1426 static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f) 1427 { 1428 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1429 SubchDev *s = dev->sch; 1430 VirtIODevice *vdev = virtio_ccw_get_vdev(s); 1431 int len; 1432 1433 s->driver_data = dev; 1434 subch_device_load(s, f); 1435 len = qemu_get_be32(f); 1436 if (len != 0) { 1437 dev->indicators = get_indicator(qemu_get_be64(f), len); 1438 } else { 1439 qemu_get_be64(f); 1440 dev->indicators = NULL; 1441 } 1442 len = qemu_get_be32(f); 1443 if (len != 0) { 1444 dev->indicators2 = get_indicator(qemu_get_be64(f), len); 1445 } else { 1446 qemu_get_be64(f); 1447 dev->indicators2 = NULL; 1448 } 1449 len = qemu_get_be32(f); 1450 if (len != 0) { 1451 dev->summary_indicator = get_indicator(qemu_get_be64(f), len); 1452 } else { 1453 qemu_get_be64(f); 1454 dev->summary_indicator = NULL; 1455 } 1456 qemu_get_be16s(f, &vdev->config_vector); 1457 dev->routes.adapter.ind_offset = qemu_get_be64(f); 1458 dev->thinint_isc = qemu_get_byte(f); 1459 dev->revision = qemu_get_be32(f); 1460 if (s->thinint_active) { 1461 return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, 1462 dev->thinint_isc, true, false, 1463 &dev->routes.adapter.adapter_id); 1464 } 1465 1466 return 0; 1467 } 1468 1469 /* This is called by virtio-bus just after the device is plugged. */ 1470 static void virtio_ccw_device_plugged(DeviceState *d, Error **errp) 1471 { 1472 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1473 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1474 SubchDev *sch = dev->sch; 1475 int n = virtio_get_num_queues(vdev); 1476 1477 if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) { 1478 error_setg(errp, "The nubmer of virtqueues %d " 1479 "exceeds ccw limit %d", n, 1480 VIRTIO_CCW_QUEUE_MAX); 1481 return; 1482 } 1483 1484 if (!kvm_eventfds_enabled()) { 1485 dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; 1486 } 1487 1488 sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus); 1489 1490 if (dev->max_rev >= 1) { 1491 virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1); 1492 } 1493 1494 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1495 d->hotplugged, 1); 1496 } 1497 1498 static void virtio_ccw_post_plugged(DeviceState *d, Error **errp) 1499 { 1500 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1501 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1502 1503 if (!virtio_host_has_feature(vdev, VIRTIO_F_VERSION_1)) { 1504 /* A backend didn't support modern virtio. */ 1505 dev->max_rev = 0; 1506 } 1507 } 1508 1509 static void virtio_ccw_device_unplugged(DeviceState *d) 1510 { 1511 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1512 1513 virtio_ccw_stop_ioeventfd(dev); 1514 } 1515 /**************** Virtio-ccw Bus Device Descriptions *******************/ 1516 1517 static Property virtio_ccw_net_properties[] = { 1518 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1519 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1520 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1521 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1522 VIRTIO_CCW_MAX_REV), 1523 DEFINE_PROP_END_OF_LIST(), 1524 }; 1525 1526 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) 1527 { 1528 DeviceClass *dc = DEVICE_CLASS(klass); 1529 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1530 1531 k->realize = virtio_ccw_net_realize; 1532 k->exit = virtio_ccw_exit; 1533 dc->reset = virtio_ccw_reset; 1534 dc->props = virtio_ccw_net_properties; 1535 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); 1536 } 1537 1538 static const TypeInfo virtio_ccw_net = { 1539 .name = TYPE_VIRTIO_NET_CCW, 1540 .parent = TYPE_VIRTIO_CCW_DEVICE, 1541 .instance_size = sizeof(VirtIONetCcw), 1542 .instance_init = virtio_ccw_net_instance_init, 1543 .class_init = virtio_ccw_net_class_init, 1544 }; 1545 1546 static Property virtio_ccw_blk_properties[] = { 1547 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1548 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1549 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1550 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1551 VIRTIO_CCW_MAX_REV), 1552 DEFINE_PROP_END_OF_LIST(), 1553 }; 1554 1555 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) 1556 { 1557 DeviceClass *dc = DEVICE_CLASS(klass); 1558 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1559 1560 k->realize = virtio_ccw_blk_realize; 1561 k->exit = virtio_ccw_exit; 1562 dc->reset = virtio_ccw_reset; 1563 dc->props = virtio_ccw_blk_properties; 1564 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1565 } 1566 1567 static const TypeInfo virtio_ccw_blk = { 1568 .name = TYPE_VIRTIO_BLK_CCW, 1569 .parent = TYPE_VIRTIO_CCW_DEVICE, 1570 .instance_size = sizeof(VirtIOBlkCcw), 1571 .instance_init = virtio_ccw_blk_instance_init, 1572 .class_init = virtio_ccw_blk_class_init, 1573 }; 1574 1575 static Property virtio_ccw_serial_properties[] = { 1576 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1577 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1578 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1579 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1580 VIRTIO_CCW_MAX_REV), 1581 DEFINE_PROP_END_OF_LIST(), 1582 }; 1583 1584 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) 1585 { 1586 DeviceClass *dc = DEVICE_CLASS(klass); 1587 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1588 1589 k->realize = virtio_ccw_serial_realize; 1590 k->exit = virtio_ccw_exit; 1591 dc->reset = virtio_ccw_reset; 1592 dc->props = virtio_ccw_serial_properties; 1593 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 1594 } 1595 1596 static const TypeInfo virtio_ccw_serial = { 1597 .name = TYPE_VIRTIO_SERIAL_CCW, 1598 .parent = TYPE_VIRTIO_CCW_DEVICE, 1599 .instance_size = sizeof(VirtioSerialCcw), 1600 .instance_init = virtio_ccw_serial_instance_init, 1601 .class_init = virtio_ccw_serial_class_init, 1602 }; 1603 1604 static Property virtio_ccw_balloon_properties[] = { 1605 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1606 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1607 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1608 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1609 VIRTIO_CCW_MAX_REV), 1610 DEFINE_PROP_END_OF_LIST(), 1611 }; 1612 1613 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) 1614 { 1615 DeviceClass *dc = DEVICE_CLASS(klass); 1616 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1617 1618 k->realize = virtio_ccw_balloon_realize; 1619 k->exit = virtio_ccw_exit; 1620 dc->reset = virtio_ccw_reset; 1621 dc->props = virtio_ccw_balloon_properties; 1622 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1623 } 1624 1625 static const TypeInfo virtio_ccw_balloon = { 1626 .name = TYPE_VIRTIO_BALLOON_CCW, 1627 .parent = TYPE_VIRTIO_CCW_DEVICE, 1628 .instance_size = sizeof(VirtIOBalloonCcw), 1629 .instance_init = virtio_ccw_balloon_instance_init, 1630 .class_init = virtio_ccw_balloon_class_init, 1631 }; 1632 1633 static Property virtio_ccw_scsi_properties[] = { 1634 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1635 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1636 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1637 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1638 VIRTIO_CCW_MAX_REV), 1639 DEFINE_PROP_END_OF_LIST(), 1640 }; 1641 1642 static void virtio_ccw_scsi_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_scsi_realize; 1648 k->exit = virtio_ccw_exit; 1649 dc->reset = virtio_ccw_reset; 1650 dc->props = virtio_ccw_scsi_properties; 1651 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1652 } 1653 1654 static const TypeInfo virtio_ccw_scsi = { 1655 .name = TYPE_VIRTIO_SCSI_CCW, 1656 .parent = TYPE_VIRTIO_CCW_DEVICE, 1657 .instance_size = sizeof(VirtIOSCSICcw), 1658 .instance_init = virtio_ccw_scsi_instance_init, 1659 .class_init = virtio_ccw_scsi_class_init, 1660 }; 1661 1662 #ifdef CONFIG_VHOST_SCSI 1663 static Property vhost_ccw_scsi_properties[] = { 1664 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1665 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1666 VIRTIO_CCW_MAX_REV), 1667 DEFINE_PROP_END_OF_LIST(), 1668 }; 1669 1670 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data) 1671 { 1672 DeviceClass *dc = DEVICE_CLASS(klass); 1673 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1674 1675 k->realize = vhost_ccw_scsi_realize; 1676 k->exit = virtio_ccw_exit; 1677 dc->reset = virtio_ccw_reset; 1678 dc->props = vhost_ccw_scsi_properties; 1679 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1680 } 1681 1682 static const TypeInfo vhost_ccw_scsi = { 1683 .name = TYPE_VHOST_SCSI_CCW, 1684 .parent = TYPE_VIRTIO_CCW_DEVICE, 1685 .instance_size = sizeof(VHostSCSICcw), 1686 .instance_init = vhost_ccw_scsi_instance_init, 1687 .class_init = vhost_ccw_scsi_class_init, 1688 }; 1689 #endif 1690 1691 static void virtio_ccw_rng_instance_init(Object *obj) 1692 { 1693 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); 1694 1695 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1696 TYPE_VIRTIO_RNG); 1697 object_property_add_alias(obj, "rng", OBJECT(&dev->vdev), 1698 "rng", &error_abort); 1699 } 1700 1701 static Property virtio_ccw_rng_properties[] = { 1702 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1703 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1704 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1705 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1706 VIRTIO_CCW_MAX_REV), 1707 DEFINE_PROP_END_OF_LIST(), 1708 }; 1709 1710 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) 1711 { 1712 DeviceClass *dc = DEVICE_CLASS(klass); 1713 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1714 1715 k->realize = virtio_ccw_rng_realize; 1716 k->exit = virtio_ccw_exit; 1717 dc->reset = virtio_ccw_reset; 1718 dc->props = virtio_ccw_rng_properties; 1719 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1720 } 1721 1722 static const TypeInfo virtio_ccw_rng = { 1723 .name = TYPE_VIRTIO_RNG_CCW, 1724 .parent = TYPE_VIRTIO_CCW_DEVICE, 1725 .instance_size = sizeof(VirtIORNGCcw), 1726 .instance_init = virtio_ccw_rng_instance_init, 1727 .class_init = virtio_ccw_rng_class_init, 1728 }; 1729 1730 static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp) 1731 { 1732 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1733 1734 virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev); 1735 virtio_ccw_device_realize(_dev, errp); 1736 } 1737 1738 static int virtio_ccw_busdev_exit(DeviceState *dev) 1739 { 1740 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1741 VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 1742 1743 return _info->exit(_dev); 1744 } 1745 1746 static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, 1747 DeviceState *dev, Error **errp) 1748 { 1749 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1750 SubchDev *sch = _dev->sch; 1751 1752 virtio_ccw_stop_ioeventfd(_dev); 1753 1754 /* 1755 * We should arrive here only for device_del, since we don't support 1756 * direct hot(un)plug of channels, but only through virtio. 1757 */ 1758 assert(sch != NULL); 1759 /* Subchannel is now disabled and no longer valid. */ 1760 sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA | 1761 PMCW_FLAGS_MASK_DNV); 1762 1763 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0); 1764 1765 object_unparent(OBJECT(dev)); 1766 } 1767 1768 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) 1769 { 1770 DeviceClass *dc = DEVICE_CLASS(klass); 1771 1772 dc->realize = virtio_ccw_busdev_realize; 1773 dc->exit = virtio_ccw_busdev_exit; 1774 dc->bus_type = TYPE_VIRTUAL_CSS_BUS; 1775 } 1776 1777 static const TypeInfo virtio_ccw_device_info = { 1778 .name = TYPE_VIRTIO_CCW_DEVICE, 1779 .parent = TYPE_DEVICE, 1780 .instance_size = sizeof(VirtioCcwDevice), 1781 .class_init = virtio_ccw_device_class_init, 1782 .class_size = sizeof(VirtIOCCWDeviceClass), 1783 .abstract = true, 1784 }; 1785 1786 /***************** Virtual-css Bus Bridge Device ********************/ 1787 /* Only required to have the virtio bus as child in the system bus */ 1788 1789 static int virtual_css_bridge_init(SysBusDevice *dev) 1790 { 1791 /* nothing */ 1792 return 0; 1793 } 1794 1795 static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) 1796 { 1797 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); 1798 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); 1799 DeviceClass *dc = DEVICE_CLASS(klass); 1800 1801 k->init = virtual_css_bridge_init; 1802 hc->unplug = virtio_ccw_busdev_unplug; 1803 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 1804 } 1805 1806 static const TypeInfo virtual_css_bridge_info = { 1807 .name = "virtual-css-bridge", 1808 .parent = TYPE_SYS_BUS_DEVICE, 1809 .instance_size = sizeof(SysBusDevice), 1810 .class_init = virtual_css_bridge_class_init, 1811 .interfaces = (InterfaceInfo[]) { 1812 { TYPE_HOTPLUG_HANDLER }, 1813 { } 1814 } 1815 }; 1816 1817 /* virtio-ccw-bus */ 1818 1819 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 1820 VirtioCcwDevice *dev) 1821 { 1822 DeviceState *qdev = DEVICE(dev); 1823 char virtio_bus_name[] = "virtio-bus"; 1824 1825 qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS, 1826 qdev, virtio_bus_name); 1827 } 1828 1829 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data) 1830 { 1831 VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); 1832 BusClass *bus_class = BUS_CLASS(klass); 1833 1834 bus_class->max_dev = 1; 1835 k->notify = virtio_ccw_notify; 1836 k->vmstate_change = virtio_ccw_vmstate_change; 1837 k->query_guest_notifiers = virtio_ccw_query_guest_notifiers; 1838 k->set_host_notifier = virtio_ccw_set_host_notifier; 1839 k->set_guest_notifiers = virtio_ccw_set_guest_notifiers; 1840 k->save_queue = virtio_ccw_save_queue; 1841 k->load_queue = virtio_ccw_load_queue; 1842 k->save_config = virtio_ccw_save_config; 1843 k->load_config = virtio_ccw_load_config; 1844 k->device_plugged = virtio_ccw_device_plugged; 1845 k->post_plugged = virtio_ccw_post_plugged; 1846 k->device_unplugged = virtio_ccw_device_unplugged; 1847 } 1848 1849 static const TypeInfo virtio_ccw_bus_info = { 1850 .name = TYPE_VIRTIO_CCW_BUS, 1851 .parent = TYPE_VIRTIO_BUS, 1852 .instance_size = sizeof(VirtioCcwBusState), 1853 .class_init = virtio_ccw_bus_class_init, 1854 }; 1855 1856 #ifdef CONFIG_VIRTFS 1857 static Property virtio_ccw_9p_properties[] = { 1858 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1859 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1860 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1861 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1862 VIRTIO_CCW_MAX_REV), 1863 DEFINE_PROP_END_OF_LIST(), 1864 }; 1865 1866 static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1867 { 1868 V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev); 1869 DeviceState *vdev = DEVICE(&dev->vdev); 1870 Error *err = NULL; 1871 1872 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1873 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1874 if (err) { 1875 error_propagate(errp, err); 1876 } 1877 } 1878 1879 static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data) 1880 { 1881 DeviceClass *dc = DEVICE_CLASS(klass); 1882 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1883 1884 k->exit = virtio_ccw_exit; 1885 k->realize = virtio_ccw_9p_realize; 1886 dc->reset = virtio_ccw_reset; 1887 dc->props = virtio_ccw_9p_properties; 1888 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1889 } 1890 1891 static void virtio_ccw_9p_instance_init(Object *obj) 1892 { 1893 V9fsCCWState *dev = VIRTIO_9P_CCW(obj); 1894 1895 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1896 TYPE_VIRTIO_9P); 1897 } 1898 1899 static const TypeInfo virtio_ccw_9p_info = { 1900 .name = TYPE_VIRTIO_9P_CCW, 1901 .parent = TYPE_VIRTIO_CCW_DEVICE, 1902 .instance_size = sizeof(V9fsCCWState), 1903 .instance_init = virtio_ccw_9p_instance_init, 1904 .class_init = virtio_ccw_9p_class_init, 1905 }; 1906 #endif 1907 1908 static void virtio_ccw_register(void) 1909 { 1910 type_register_static(&virtio_ccw_bus_info); 1911 type_register_static(&virtual_css_bus_info); 1912 type_register_static(&virtio_ccw_device_info); 1913 type_register_static(&virtio_ccw_serial); 1914 type_register_static(&virtio_ccw_blk); 1915 type_register_static(&virtio_ccw_net); 1916 type_register_static(&virtio_ccw_balloon); 1917 type_register_static(&virtio_ccw_scsi); 1918 #ifdef CONFIG_VHOST_SCSI 1919 type_register_static(&vhost_ccw_scsi); 1920 #endif 1921 type_register_static(&virtio_ccw_rng); 1922 type_register_static(&virtual_css_bridge_info); 1923 #ifdef CONFIG_VIRTFS 1924 type_register_static(&virtio_ccw_9p_info); 1925 #endif 1926 } 1927 1928 type_init(virtio_ccw_register) 1929