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 cssid = 0; 741 unsigned int ssid = 0; 742 unsigned int schid; 743 unsigned int devno; 744 bool have_devno = false; 745 bool found = false; 746 SubchDev *sch; 747 int num; 748 Error *err = NULL; 749 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 750 751 sch = g_malloc0(sizeof(SubchDev)); 752 753 sch->driver_data = dev; 754 dev->sch = sch; 755 756 dev->indicators = NULL; 757 758 /* Initialize subchannel structure. */ 759 sch->channel_prog = 0x0; 760 sch->last_cmd_valid = false; 761 sch->thinint_active = false; 762 /* 763 * Use a device number if provided. Otherwise, fall back to subchannel 764 * number. 765 */ 766 if (dev->bus_id) { 767 num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno); 768 if (num == 3) { 769 if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) { 770 error_setg(errp, "Invalid cssid or ssid: cssid %x, ssid %x", 771 cssid, ssid); 772 goto out_err; 773 } 774 /* Enforce use of virtual cssid. */ 775 if (cssid != VIRTUAL_CSSID) { 776 error_setg(errp, "cssid %x not valid for virtio devices", 777 cssid); 778 goto out_err; 779 } 780 if (css_devno_used(cssid, ssid, devno)) { 781 error_setg(errp, "Device %x.%x.%04x already exists", 782 cssid, ssid, devno); 783 goto out_err; 784 } 785 sch->cssid = cssid; 786 sch->ssid = ssid; 787 sch->devno = devno; 788 have_devno = true; 789 } else { 790 error_setg(errp, "Malformed devno parameter '%s'", dev->bus_id); 791 goto out_err; 792 } 793 } 794 795 /* Find the next free id. */ 796 if (have_devno) { 797 for (schid = 0; schid <= MAX_SCHID; schid++) { 798 if (!css_find_subch(1, cssid, ssid, schid)) { 799 sch->schid = schid; 800 css_subch_assign(cssid, ssid, schid, devno, sch); 801 found = true; 802 break; 803 } 804 } 805 if (!found) { 806 error_setg(errp, "No free subchannel found for %x.%x.%04x", 807 cssid, ssid, devno); 808 goto out_err; 809 } 810 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 811 "user-configured"); 812 } else { 813 cssid = VIRTUAL_CSSID; 814 for (ssid = 0; ssid <= MAX_SSID; ssid++) { 815 for (schid = 0; schid <= MAX_SCHID; schid++) { 816 if (!css_find_subch(1, cssid, ssid, schid)) { 817 sch->cssid = cssid; 818 sch->ssid = ssid; 819 sch->schid = schid; 820 devno = schid; 821 /* 822 * If the devno is already taken, look further in this 823 * subchannel set. 824 */ 825 while (css_devno_used(cssid, ssid, devno)) { 826 if (devno == MAX_SCHID) { 827 devno = 0; 828 } else if (devno == schid - 1) { 829 error_setg(errp, "No free devno found"); 830 goto out_err; 831 } else { 832 devno++; 833 } 834 } 835 sch->devno = devno; 836 css_subch_assign(cssid, ssid, schid, devno, sch); 837 found = true; 838 break; 839 } 840 } 841 if (found) { 842 break; 843 } 844 } 845 if (!found) { 846 error_setg(errp, "Virtual channel subsystem is full!"); 847 goto out_err; 848 } 849 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 850 "auto-configured"); 851 } 852 853 /* Build initial schib. */ 854 css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE); 855 856 sch->ccw_cb = virtio_ccw_cb; 857 sch->disable_cb = virtio_sch_disable_cb; 858 859 /* Build senseid data. */ 860 memset(&sch->id, 0, sizeof(SenseId)); 861 sch->id.reserved = 0xff; 862 sch->id.cu_type = VIRTIO_CCW_CU_TYPE; 863 864 dev->revision = -1; 865 866 if (k->realize) { 867 k->realize(dev, &err); 868 } 869 if (err) { 870 error_propagate(errp, err); 871 css_subch_assign(cssid, ssid, schid, devno, NULL); 872 goto out_err; 873 } 874 875 return; 876 877 out_err: 878 dev->sch = NULL; 879 g_free(sch); 880 } 881 882 static int virtio_ccw_exit(VirtioCcwDevice *dev) 883 { 884 SubchDev *sch = dev->sch; 885 886 if (sch) { 887 css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); 888 g_free(sch); 889 } 890 if (dev->indicators) { 891 release_indicator(&dev->routes.adapter, dev->indicators); 892 dev->indicators = NULL; 893 } 894 return 0; 895 } 896 897 static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp) 898 { 899 DeviceState *qdev = DEVICE(ccw_dev); 900 VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); 901 DeviceState *vdev = DEVICE(&dev->vdev); 902 Error *err = NULL; 903 904 virtio_net_set_netclient_name(&dev->vdev, qdev->id, 905 object_get_typename(OBJECT(qdev))); 906 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 907 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 908 if (err) { 909 error_propagate(errp, err); 910 } 911 } 912 913 static void virtio_ccw_net_instance_init(Object *obj) 914 { 915 VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); 916 917 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 918 TYPE_VIRTIO_NET); 919 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 920 "bootindex", &error_abort); 921 } 922 923 static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp) 924 { 925 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); 926 DeviceState *vdev = DEVICE(&dev->vdev); 927 Error *err = NULL; 928 929 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 930 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 931 if (err) { 932 error_propagate(errp, err); 933 } 934 } 935 936 static void virtio_ccw_blk_instance_init(Object *obj) 937 { 938 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); 939 940 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 941 TYPE_VIRTIO_BLK); 942 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread", 943 &error_abort); 944 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 945 "bootindex", &error_abort); 946 } 947 948 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp) 949 { 950 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); 951 DeviceState *vdev = DEVICE(&dev->vdev); 952 DeviceState *proxy = DEVICE(ccw_dev); 953 Error *err = NULL; 954 char *bus_name; 955 956 /* 957 * For command line compatibility, this sets the virtio-serial-device bus 958 * name as before. 959 */ 960 if (proxy->id) { 961 bus_name = g_strdup_printf("%s.0", proxy->id); 962 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 963 g_free(bus_name); 964 } 965 966 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 967 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 968 if (err) { 969 error_propagate(errp, err); 970 } 971 } 972 973 974 static void virtio_ccw_serial_instance_init(Object *obj) 975 { 976 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); 977 978 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 979 TYPE_VIRTIO_SERIAL); 980 } 981 982 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp) 983 { 984 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); 985 DeviceState *vdev = DEVICE(&dev->vdev); 986 Error *err = NULL; 987 988 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 989 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 990 if (err) { 991 error_propagate(errp, err); 992 } 993 } 994 995 static void virtio_ccw_balloon_instance_init(Object *obj) 996 { 997 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); 998 999 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1000 TYPE_VIRTIO_BALLOON); 1001 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev), 1002 "guest-stats", &error_abort); 1003 object_property_add_alias(obj, "guest-stats-polling-interval", 1004 OBJECT(&dev->vdev), 1005 "guest-stats-polling-interval", &error_abort); 1006 } 1007 1008 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1009 { 1010 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); 1011 DeviceState *vdev = DEVICE(&dev->vdev); 1012 DeviceState *qdev = DEVICE(ccw_dev); 1013 Error *err = NULL; 1014 char *bus_name; 1015 1016 /* 1017 * For command line compatibility, this sets the virtio-scsi-device bus 1018 * name as before. 1019 */ 1020 if (qdev->id) { 1021 bus_name = g_strdup_printf("%s.0", qdev->id); 1022 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 1023 g_free(bus_name); 1024 } 1025 1026 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1027 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1028 if (err) { 1029 error_propagate(errp, err); 1030 } 1031 } 1032 1033 static void virtio_ccw_scsi_instance_init(Object *obj) 1034 { 1035 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); 1036 1037 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1038 TYPE_VIRTIO_SCSI); 1039 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread", 1040 &error_abort); 1041 } 1042 1043 #ifdef CONFIG_VHOST_SCSI 1044 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1045 { 1046 VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); 1047 DeviceState *vdev = DEVICE(&dev->vdev); 1048 Error *err = NULL; 1049 1050 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1051 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1052 if (err) { 1053 error_propagate(errp, err); 1054 } 1055 } 1056 1057 static void vhost_ccw_scsi_instance_init(Object *obj) 1058 { 1059 VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); 1060 1061 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1062 TYPE_VHOST_SCSI); 1063 } 1064 #endif 1065 1066 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1067 { 1068 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); 1069 DeviceState *vdev = DEVICE(&dev->vdev); 1070 Error *err = NULL; 1071 1072 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1073 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1074 if (err) { 1075 error_propagate(errp, err); 1076 return; 1077 } 1078 1079 object_property_set_link(OBJECT(dev), 1080 OBJECT(dev->vdev.conf.rng), "rng", 1081 NULL); 1082 } 1083 1084 /* DeviceState to VirtioCcwDevice. Note: used on datapath, 1085 * be careful and test performance if you change this. 1086 */ 1087 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) 1088 { 1089 return container_of(d, VirtioCcwDevice, parent_obj); 1090 } 1091 1092 static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc, 1093 uint8_t to_be_set) 1094 { 1095 uint8_t ind_old, ind_new; 1096 hwaddr len = 1; 1097 uint8_t *ind_addr; 1098 1099 ind_addr = cpu_physical_memory_map(ind_loc, &len, 1); 1100 if (!ind_addr) { 1101 error_report("%s(%x.%x.%04x): unable to access indicator", 1102 __func__, sch->cssid, sch->ssid, sch->schid); 1103 return -1; 1104 } 1105 do { 1106 ind_old = *ind_addr; 1107 ind_new = ind_old | to_be_set; 1108 } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old); 1109 cpu_physical_memory_unmap(ind_addr, len, 1, len); 1110 1111 return ind_old; 1112 } 1113 1114 static void virtio_ccw_notify(DeviceState *d, uint16_t vector) 1115 { 1116 VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); 1117 SubchDev *sch = dev->sch; 1118 uint64_t indicators; 1119 1120 /* queue indicators + secondary indicators */ 1121 if (vector >= VIRTIO_CCW_QUEUE_MAX + 64) { 1122 return; 1123 } 1124 1125 if (vector < VIRTIO_CCW_QUEUE_MAX) { 1126 if (!dev->indicators) { 1127 return; 1128 } 1129 if (sch->thinint_active) { 1130 /* 1131 * In the adapter interrupt case, indicators points to a 1132 * memory area that may be (way) larger than 64 bit and 1133 * ind_bit indicates the start of the indicators in a big 1134 * endian notation. 1135 */ 1136 uint64_t ind_bit = dev->routes.adapter.ind_offset; 1137 1138 virtio_set_ind_atomic(sch, dev->indicators->addr + 1139 (ind_bit + vector) / 8, 1140 0x80 >> ((ind_bit + vector) % 8)); 1141 if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr, 1142 0x01)) { 1143 css_adapter_interrupt(dev->thinint_isc); 1144 } 1145 } else { 1146 indicators = address_space_ldq(&address_space_memory, 1147 dev->indicators->addr, 1148 MEMTXATTRS_UNSPECIFIED, 1149 NULL); 1150 indicators |= 1ULL << vector; 1151 address_space_stq(&address_space_memory, dev->indicators->addr, 1152 indicators, MEMTXATTRS_UNSPECIFIED, NULL); 1153 css_conditional_io_interrupt(sch); 1154 } 1155 } else { 1156 if (!dev->indicators2) { 1157 return; 1158 } 1159 vector = 0; 1160 indicators = address_space_ldq(&address_space_memory, 1161 dev->indicators2->addr, 1162 MEMTXATTRS_UNSPECIFIED, 1163 NULL); 1164 indicators |= 1ULL << vector; 1165 address_space_stq(&address_space_memory, dev->indicators2->addr, 1166 indicators, MEMTXATTRS_UNSPECIFIED, NULL); 1167 css_conditional_io_interrupt(sch); 1168 } 1169 } 1170 1171 static void virtio_ccw_reset(DeviceState *d) 1172 { 1173 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1174 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1175 1176 virtio_ccw_reset_virtio(dev, vdev); 1177 css_reset_sch(dev->sch); 1178 } 1179 1180 static void virtio_ccw_vmstate_change(DeviceState *d, bool running) 1181 { 1182 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1183 1184 if (running) { 1185 virtio_ccw_start_ioeventfd(dev); 1186 } else { 1187 virtio_ccw_stop_ioeventfd(dev); 1188 } 1189 } 1190 1191 static bool virtio_ccw_query_guest_notifiers(DeviceState *d) 1192 { 1193 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1194 1195 return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA); 1196 } 1197 1198 static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign) 1199 { 1200 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1201 1202 /* Stop using the generic ioeventfd, we are doing eventfd handling 1203 * ourselves below */ 1204 dev->ioeventfd_disabled = assign; 1205 if (assign) { 1206 virtio_ccw_stop_ioeventfd(dev); 1207 } 1208 return virtio_ccw_set_guest2host_notifier(dev, n, assign, false); 1209 } 1210 1211 static int virtio_ccw_get_mappings(VirtioCcwDevice *dev) 1212 { 1213 int r; 1214 1215 if (!dev->sch->thinint_active) { 1216 return -EINVAL; 1217 } 1218 1219 r = map_indicator(&dev->routes.adapter, dev->summary_indicator); 1220 if (r) { 1221 return r; 1222 } 1223 r = map_indicator(&dev->routes.adapter, dev->indicators); 1224 if (r) { 1225 return r; 1226 } 1227 dev->routes.adapter.summary_addr = dev->summary_indicator->map; 1228 dev->routes.adapter.ind_addr = dev->indicators->map; 1229 1230 return 0; 1231 } 1232 1233 static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs) 1234 { 1235 int i; 1236 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1237 int ret; 1238 S390FLICState *fs = s390_get_flic(); 1239 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 1240 1241 ret = virtio_ccw_get_mappings(dev); 1242 if (ret) { 1243 return ret; 1244 } 1245 for (i = 0; i < nvqs; i++) { 1246 if (!virtio_queue_get_num(vdev, i)) { 1247 break; 1248 } 1249 } 1250 dev->routes.num_routes = i; 1251 return fsc->add_adapter_routes(fs, &dev->routes); 1252 } 1253 1254 static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs) 1255 { 1256 S390FLICState *fs = s390_get_flic(); 1257 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 1258 1259 fsc->release_adapter_routes(fs, &dev->routes); 1260 } 1261 1262 static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n) 1263 { 1264 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1265 VirtQueue *vq = virtio_get_queue(vdev, n); 1266 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1267 1268 return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL, 1269 dev->routes.gsi[n]); 1270 } 1271 1272 static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n) 1273 { 1274 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1275 VirtQueue *vq = virtio_get_queue(vdev, n); 1276 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1277 int ret; 1278 1279 ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier, 1280 dev->routes.gsi[n]); 1281 assert(ret == 0); 1282 } 1283 1284 static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n, 1285 bool assign, bool with_irqfd) 1286 { 1287 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1288 VirtQueue *vq = virtio_get_queue(vdev, n); 1289 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1290 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); 1291 1292 if (assign) { 1293 int r = event_notifier_init(notifier, 0); 1294 1295 if (r < 0) { 1296 return r; 1297 } 1298 virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); 1299 if (with_irqfd) { 1300 r = virtio_ccw_add_irqfd(dev, n); 1301 if (r) { 1302 virtio_queue_set_guest_notifier_fd_handler(vq, false, 1303 with_irqfd); 1304 return r; 1305 } 1306 } 1307 /* 1308 * We do not support individual masking for channel devices, so we 1309 * need to manually trigger any guest masking callbacks here. 1310 */ 1311 if (k->guest_notifier_mask) { 1312 k->guest_notifier_mask(vdev, n, false); 1313 } 1314 /* get lost events and re-inject */ 1315 if (k->guest_notifier_pending && 1316 k->guest_notifier_pending(vdev, n)) { 1317 event_notifier_set(notifier); 1318 } 1319 } else { 1320 if (k->guest_notifier_mask) { 1321 k->guest_notifier_mask(vdev, n, true); 1322 } 1323 if (with_irqfd) { 1324 virtio_ccw_remove_irqfd(dev, n); 1325 } 1326 virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); 1327 event_notifier_cleanup(notifier); 1328 } 1329 return 0; 1330 } 1331 1332 static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs, 1333 bool assigned) 1334 { 1335 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1336 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1337 bool with_irqfd = dev->sch->thinint_active && kvm_irqfds_enabled(); 1338 int r, n; 1339 1340 if (with_irqfd && assigned) { 1341 /* irq routes need to be set up before assigning irqfds */ 1342 r = virtio_ccw_setup_irqroutes(dev, nvqs); 1343 if (r < 0) { 1344 goto irqroute_error; 1345 } 1346 } 1347 for (n = 0; n < nvqs; n++) { 1348 if (!virtio_queue_get_num(vdev, n)) { 1349 break; 1350 } 1351 r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd); 1352 if (r < 0) { 1353 goto assign_error; 1354 } 1355 } 1356 if (with_irqfd && !assigned) { 1357 /* release irq routes after irqfds have been released */ 1358 virtio_ccw_release_irqroutes(dev, nvqs); 1359 } 1360 return 0; 1361 1362 assign_error: 1363 while (--n >= 0) { 1364 virtio_ccw_set_guest_notifier(dev, n, !assigned, false); 1365 } 1366 irqroute_error: 1367 if (with_irqfd && assigned) { 1368 virtio_ccw_release_irqroutes(dev, nvqs); 1369 } 1370 return r; 1371 } 1372 1373 static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f) 1374 { 1375 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1376 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1377 1378 qemu_put_be16(f, virtio_queue_vector(vdev, n)); 1379 } 1380 1381 static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f) 1382 { 1383 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1384 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1385 uint16_t vector; 1386 1387 qemu_get_be16s(f, &vector); 1388 virtio_queue_set_vector(vdev, n , vector); 1389 1390 return 0; 1391 } 1392 1393 static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f) 1394 { 1395 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1396 SubchDev *s = dev->sch; 1397 VirtIODevice *vdev = virtio_ccw_get_vdev(s); 1398 1399 subch_device_save(s, f); 1400 if (dev->indicators != NULL) { 1401 qemu_put_be32(f, dev->indicators->len); 1402 qemu_put_be64(f, dev->indicators->addr); 1403 } else { 1404 qemu_put_be32(f, 0); 1405 qemu_put_be64(f, 0UL); 1406 } 1407 if (dev->indicators2 != NULL) { 1408 qemu_put_be32(f, dev->indicators2->len); 1409 qemu_put_be64(f, dev->indicators2->addr); 1410 } else { 1411 qemu_put_be32(f, 0); 1412 qemu_put_be64(f, 0UL); 1413 } 1414 if (dev->summary_indicator != NULL) { 1415 qemu_put_be32(f, dev->summary_indicator->len); 1416 qemu_put_be64(f, dev->summary_indicator->addr); 1417 } else { 1418 qemu_put_be32(f, 0); 1419 qemu_put_be64(f, 0UL); 1420 } 1421 qemu_put_be16(f, vdev->config_vector); 1422 qemu_put_be64(f, dev->routes.adapter.ind_offset); 1423 qemu_put_byte(f, dev->thinint_isc); 1424 qemu_put_be32(f, dev->revision); 1425 } 1426 1427 static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f) 1428 { 1429 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1430 SubchDev *s = dev->sch; 1431 VirtIODevice *vdev = virtio_ccw_get_vdev(s); 1432 int len; 1433 1434 s->driver_data = dev; 1435 subch_device_load(s, f); 1436 len = qemu_get_be32(f); 1437 if (len != 0) { 1438 dev->indicators = get_indicator(qemu_get_be64(f), len); 1439 } else { 1440 qemu_get_be64(f); 1441 dev->indicators = NULL; 1442 } 1443 len = qemu_get_be32(f); 1444 if (len != 0) { 1445 dev->indicators2 = get_indicator(qemu_get_be64(f), len); 1446 } else { 1447 qemu_get_be64(f); 1448 dev->indicators2 = NULL; 1449 } 1450 len = qemu_get_be32(f); 1451 if (len != 0) { 1452 dev->summary_indicator = get_indicator(qemu_get_be64(f), len); 1453 } else { 1454 qemu_get_be64(f); 1455 dev->summary_indicator = NULL; 1456 } 1457 qemu_get_be16s(f, &vdev->config_vector); 1458 dev->routes.adapter.ind_offset = qemu_get_be64(f); 1459 dev->thinint_isc = qemu_get_byte(f); 1460 dev->revision = qemu_get_be32(f); 1461 if (s->thinint_active) { 1462 return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, 1463 dev->thinint_isc, true, false, 1464 &dev->routes.adapter.adapter_id); 1465 } 1466 1467 return 0; 1468 } 1469 1470 /* This is called by virtio-bus just after the device is plugged. */ 1471 static void virtio_ccw_device_plugged(DeviceState *d, Error **errp) 1472 { 1473 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1474 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1475 SubchDev *sch = dev->sch; 1476 int n = virtio_get_num_queues(vdev); 1477 1478 if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) { 1479 error_setg(errp, "The number of virtqueues %d " 1480 "exceeds ccw limit %d", n, 1481 VIRTIO_CCW_QUEUE_MAX); 1482 return; 1483 } 1484 1485 if (!kvm_eventfds_enabled()) { 1486 dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; 1487 } 1488 1489 sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus); 1490 1491 if (dev->max_rev >= 1) { 1492 virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1); 1493 } 1494 1495 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1496 d->hotplugged, 1); 1497 } 1498 1499 static void virtio_ccw_post_plugged(DeviceState *d, Error **errp) 1500 { 1501 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1502 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1503 1504 if (!virtio_host_has_feature(vdev, VIRTIO_F_VERSION_1)) { 1505 /* A backend didn't support modern virtio. */ 1506 dev->max_rev = 0; 1507 } 1508 } 1509 1510 static void virtio_ccw_device_unplugged(DeviceState *d) 1511 { 1512 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1513 1514 virtio_ccw_stop_ioeventfd(dev); 1515 } 1516 /**************** Virtio-ccw Bus Device Descriptions *******************/ 1517 1518 static Property virtio_ccw_net_properties[] = { 1519 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1520 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1521 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1522 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1523 VIRTIO_CCW_MAX_REV), 1524 DEFINE_PROP_END_OF_LIST(), 1525 }; 1526 1527 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) 1528 { 1529 DeviceClass *dc = DEVICE_CLASS(klass); 1530 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1531 1532 k->realize = virtio_ccw_net_realize; 1533 k->exit = virtio_ccw_exit; 1534 dc->reset = virtio_ccw_reset; 1535 dc->props = virtio_ccw_net_properties; 1536 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); 1537 } 1538 1539 static const TypeInfo virtio_ccw_net = { 1540 .name = TYPE_VIRTIO_NET_CCW, 1541 .parent = TYPE_VIRTIO_CCW_DEVICE, 1542 .instance_size = sizeof(VirtIONetCcw), 1543 .instance_init = virtio_ccw_net_instance_init, 1544 .class_init = virtio_ccw_net_class_init, 1545 }; 1546 1547 static Property virtio_ccw_blk_properties[] = { 1548 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1549 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1550 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1551 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1552 VIRTIO_CCW_MAX_REV), 1553 DEFINE_PROP_END_OF_LIST(), 1554 }; 1555 1556 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) 1557 { 1558 DeviceClass *dc = DEVICE_CLASS(klass); 1559 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1560 1561 k->realize = virtio_ccw_blk_realize; 1562 k->exit = virtio_ccw_exit; 1563 dc->reset = virtio_ccw_reset; 1564 dc->props = virtio_ccw_blk_properties; 1565 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1566 } 1567 1568 static const TypeInfo virtio_ccw_blk = { 1569 .name = TYPE_VIRTIO_BLK_CCW, 1570 .parent = TYPE_VIRTIO_CCW_DEVICE, 1571 .instance_size = sizeof(VirtIOBlkCcw), 1572 .instance_init = virtio_ccw_blk_instance_init, 1573 .class_init = virtio_ccw_blk_class_init, 1574 }; 1575 1576 static Property virtio_ccw_serial_properties[] = { 1577 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1578 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1579 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1580 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1581 VIRTIO_CCW_MAX_REV), 1582 DEFINE_PROP_END_OF_LIST(), 1583 }; 1584 1585 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) 1586 { 1587 DeviceClass *dc = DEVICE_CLASS(klass); 1588 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1589 1590 k->realize = virtio_ccw_serial_realize; 1591 k->exit = virtio_ccw_exit; 1592 dc->reset = virtio_ccw_reset; 1593 dc->props = virtio_ccw_serial_properties; 1594 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 1595 } 1596 1597 static const TypeInfo virtio_ccw_serial = { 1598 .name = TYPE_VIRTIO_SERIAL_CCW, 1599 .parent = TYPE_VIRTIO_CCW_DEVICE, 1600 .instance_size = sizeof(VirtioSerialCcw), 1601 .instance_init = virtio_ccw_serial_instance_init, 1602 .class_init = virtio_ccw_serial_class_init, 1603 }; 1604 1605 static Property virtio_ccw_balloon_properties[] = { 1606 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1607 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1608 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1609 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1610 VIRTIO_CCW_MAX_REV), 1611 DEFINE_PROP_END_OF_LIST(), 1612 }; 1613 1614 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) 1615 { 1616 DeviceClass *dc = DEVICE_CLASS(klass); 1617 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1618 1619 k->realize = virtio_ccw_balloon_realize; 1620 k->exit = virtio_ccw_exit; 1621 dc->reset = virtio_ccw_reset; 1622 dc->props = virtio_ccw_balloon_properties; 1623 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1624 } 1625 1626 static const TypeInfo virtio_ccw_balloon = { 1627 .name = TYPE_VIRTIO_BALLOON_CCW, 1628 .parent = TYPE_VIRTIO_CCW_DEVICE, 1629 .instance_size = sizeof(VirtIOBalloonCcw), 1630 .instance_init = virtio_ccw_balloon_instance_init, 1631 .class_init = virtio_ccw_balloon_class_init, 1632 }; 1633 1634 static Property virtio_ccw_scsi_properties[] = { 1635 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1636 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1637 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1638 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1639 VIRTIO_CCW_MAX_REV), 1640 DEFINE_PROP_END_OF_LIST(), 1641 }; 1642 1643 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data) 1644 { 1645 DeviceClass *dc = DEVICE_CLASS(klass); 1646 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1647 1648 k->realize = virtio_ccw_scsi_realize; 1649 k->exit = virtio_ccw_exit; 1650 dc->reset = virtio_ccw_reset; 1651 dc->props = virtio_ccw_scsi_properties; 1652 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1653 } 1654 1655 static const TypeInfo virtio_ccw_scsi = { 1656 .name = TYPE_VIRTIO_SCSI_CCW, 1657 .parent = TYPE_VIRTIO_CCW_DEVICE, 1658 .instance_size = sizeof(VirtIOSCSICcw), 1659 .instance_init = virtio_ccw_scsi_instance_init, 1660 .class_init = virtio_ccw_scsi_class_init, 1661 }; 1662 1663 #ifdef CONFIG_VHOST_SCSI 1664 static Property vhost_ccw_scsi_properties[] = { 1665 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1666 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1667 VIRTIO_CCW_MAX_REV), 1668 DEFINE_PROP_END_OF_LIST(), 1669 }; 1670 1671 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data) 1672 { 1673 DeviceClass *dc = DEVICE_CLASS(klass); 1674 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1675 1676 k->realize = vhost_ccw_scsi_realize; 1677 k->exit = virtio_ccw_exit; 1678 dc->reset = virtio_ccw_reset; 1679 dc->props = vhost_ccw_scsi_properties; 1680 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1681 } 1682 1683 static const TypeInfo vhost_ccw_scsi = { 1684 .name = TYPE_VHOST_SCSI_CCW, 1685 .parent = TYPE_VIRTIO_CCW_DEVICE, 1686 .instance_size = sizeof(VHostSCSICcw), 1687 .instance_init = vhost_ccw_scsi_instance_init, 1688 .class_init = vhost_ccw_scsi_class_init, 1689 }; 1690 #endif 1691 1692 static void virtio_ccw_rng_instance_init(Object *obj) 1693 { 1694 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); 1695 1696 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1697 TYPE_VIRTIO_RNG); 1698 object_property_add_alias(obj, "rng", OBJECT(&dev->vdev), 1699 "rng", &error_abort); 1700 } 1701 1702 static Property virtio_ccw_rng_properties[] = { 1703 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1704 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1705 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1706 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1707 VIRTIO_CCW_MAX_REV), 1708 DEFINE_PROP_END_OF_LIST(), 1709 }; 1710 1711 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) 1712 { 1713 DeviceClass *dc = DEVICE_CLASS(klass); 1714 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1715 1716 k->realize = virtio_ccw_rng_realize; 1717 k->exit = virtio_ccw_exit; 1718 dc->reset = virtio_ccw_reset; 1719 dc->props = virtio_ccw_rng_properties; 1720 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1721 } 1722 1723 static const TypeInfo virtio_ccw_rng = { 1724 .name = TYPE_VIRTIO_RNG_CCW, 1725 .parent = TYPE_VIRTIO_CCW_DEVICE, 1726 .instance_size = sizeof(VirtIORNGCcw), 1727 .instance_init = virtio_ccw_rng_instance_init, 1728 .class_init = virtio_ccw_rng_class_init, 1729 }; 1730 1731 static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp) 1732 { 1733 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1734 1735 virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev); 1736 virtio_ccw_device_realize(_dev, errp); 1737 } 1738 1739 static int virtio_ccw_busdev_exit(DeviceState *dev) 1740 { 1741 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1742 VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 1743 1744 return _info->exit(_dev); 1745 } 1746 1747 static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, 1748 DeviceState *dev, Error **errp) 1749 { 1750 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1751 SubchDev *sch = _dev->sch; 1752 1753 virtio_ccw_stop_ioeventfd(_dev); 1754 1755 /* 1756 * We should arrive here only for device_del, since we don't support 1757 * direct hot(un)plug of channels, but only through virtio. 1758 */ 1759 assert(sch != NULL); 1760 /* Subchannel is now disabled and no longer valid. */ 1761 sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA | 1762 PMCW_FLAGS_MASK_DNV); 1763 1764 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0); 1765 1766 object_unparent(OBJECT(dev)); 1767 } 1768 1769 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) 1770 { 1771 DeviceClass *dc = DEVICE_CLASS(klass); 1772 1773 dc->realize = virtio_ccw_busdev_realize; 1774 dc->exit = virtio_ccw_busdev_exit; 1775 dc->bus_type = TYPE_VIRTUAL_CSS_BUS; 1776 } 1777 1778 static const TypeInfo virtio_ccw_device_info = { 1779 .name = TYPE_VIRTIO_CCW_DEVICE, 1780 .parent = TYPE_DEVICE, 1781 .instance_size = sizeof(VirtioCcwDevice), 1782 .class_init = virtio_ccw_device_class_init, 1783 .class_size = sizeof(VirtIOCCWDeviceClass), 1784 .abstract = true, 1785 }; 1786 1787 /***************** Virtual-css Bus Bridge Device ********************/ 1788 /* Only required to have the virtio bus as child in the system bus */ 1789 1790 static int virtual_css_bridge_init(SysBusDevice *dev) 1791 { 1792 /* nothing */ 1793 return 0; 1794 } 1795 1796 static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) 1797 { 1798 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); 1799 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); 1800 DeviceClass *dc = DEVICE_CLASS(klass); 1801 1802 k->init = virtual_css_bridge_init; 1803 hc->unplug = virtio_ccw_busdev_unplug; 1804 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 1805 } 1806 1807 static const TypeInfo virtual_css_bridge_info = { 1808 .name = "virtual-css-bridge", 1809 .parent = TYPE_SYS_BUS_DEVICE, 1810 .instance_size = sizeof(SysBusDevice), 1811 .class_init = virtual_css_bridge_class_init, 1812 .interfaces = (InterfaceInfo[]) { 1813 { TYPE_HOTPLUG_HANDLER }, 1814 { } 1815 } 1816 }; 1817 1818 /* virtio-ccw-bus */ 1819 1820 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 1821 VirtioCcwDevice *dev) 1822 { 1823 DeviceState *qdev = DEVICE(dev); 1824 char virtio_bus_name[] = "virtio-bus"; 1825 1826 qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS, 1827 qdev, virtio_bus_name); 1828 } 1829 1830 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data) 1831 { 1832 VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); 1833 BusClass *bus_class = BUS_CLASS(klass); 1834 1835 bus_class->max_dev = 1; 1836 k->notify = virtio_ccw_notify; 1837 k->vmstate_change = virtio_ccw_vmstate_change; 1838 k->query_guest_notifiers = virtio_ccw_query_guest_notifiers; 1839 k->set_host_notifier = virtio_ccw_set_host_notifier; 1840 k->set_guest_notifiers = virtio_ccw_set_guest_notifiers; 1841 k->save_queue = virtio_ccw_save_queue; 1842 k->load_queue = virtio_ccw_load_queue; 1843 k->save_config = virtio_ccw_save_config; 1844 k->load_config = virtio_ccw_load_config; 1845 k->device_plugged = virtio_ccw_device_plugged; 1846 k->post_plugged = virtio_ccw_post_plugged; 1847 k->device_unplugged = virtio_ccw_device_unplugged; 1848 } 1849 1850 static const TypeInfo virtio_ccw_bus_info = { 1851 .name = TYPE_VIRTIO_CCW_BUS, 1852 .parent = TYPE_VIRTIO_BUS, 1853 .instance_size = sizeof(VirtioCcwBusState), 1854 .class_init = virtio_ccw_bus_class_init, 1855 }; 1856 1857 #ifdef CONFIG_VIRTFS 1858 static Property virtio_ccw_9p_properties[] = { 1859 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1860 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1861 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1862 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1863 VIRTIO_CCW_MAX_REV), 1864 DEFINE_PROP_END_OF_LIST(), 1865 }; 1866 1867 static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1868 { 1869 V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev); 1870 DeviceState *vdev = DEVICE(&dev->vdev); 1871 Error *err = NULL; 1872 1873 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1874 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1875 if (err) { 1876 error_propagate(errp, err); 1877 } 1878 } 1879 1880 static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data) 1881 { 1882 DeviceClass *dc = DEVICE_CLASS(klass); 1883 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1884 1885 k->exit = virtio_ccw_exit; 1886 k->realize = virtio_ccw_9p_realize; 1887 dc->reset = virtio_ccw_reset; 1888 dc->props = virtio_ccw_9p_properties; 1889 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1890 } 1891 1892 static void virtio_ccw_9p_instance_init(Object *obj) 1893 { 1894 V9fsCCWState *dev = VIRTIO_9P_CCW(obj); 1895 1896 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1897 TYPE_VIRTIO_9P); 1898 } 1899 1900 static const TypeInfo virtio_ccw_9p_info = { 1901 .name = TYPE_VIRTIO_9P_CCW, 1902 .parent = TYPE_VIRTIO_CCW_DEVICE, 1903 .instance_size = sizeof(V9fsCCWState), 1904 .instance_init = virtio_ccw_9p_instance_init, 1905 .class_init = virtio_ccw_9p_class_init, 1906 }; 1907 #endif 1908 1909 static void virtio_ccw_register(void) 1910 { 1911 type_register_static(&virtio_ccw_bus_info); 1912 type_register_static(&virtual_css_bus_info); 1913 type_register_static(&virtio_ccw_device_info); 1914 type_register_static(&virtio_ccw_serial); 1915 type_register_static(&virtio_ccw_blk); 1916 type_register_static(&virtio_ccw_net); 1917 type_register_static(&virtio_ccw_balloon); 1918 type_register_static(&virtio_ccw_scsi); 1919 #ifdef CONFIG_VHOST_SCSI 1920 type_register_static(&vhost_ccw_scsi); 1921 #endif 1922 type_register_static(&virtio_ccw_rng); 1923 type_register_static(&virtual_css_bridge_info); 1924 #ifdef CONFIG_VIRTFS 1925 type_register_static(&virtio_ccw_9p_info); 1926 #endif 1927 } 1928 1929 type_init(virtio_ccw_register) 1930