1 /* 2 * virtio ccw target implementation 3 * 4 * Copyright 2012,2015 IBM Corp. 5 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> 6 * Pierre Morel <pmorel@linux.vnet.ibm.com> 7 * 8 * This work is licensed under the terms of the GNU GPL, version 2 or (at 9 * your option) any later version. See the COPYING file in the top-level 10 * directory. 11 */ 12 13 #include "hw/hw.h" 14 #include "sysemu/block-backend.h" 15 #include "sysemu/blockdev.h" 16 #include "sysemu/sysemu.h" 17 #include "net/net.h" 18 #include "hw/virtio/virtio.h" 19 #include "hw/virtio/virtio-serial.h" 20 #include "hw/virtio/virtio-net.h" 21 #include "hw/sysbus.h" 22 #include "qemu/bitops.h" 23 #include "qemu/error-report.h" 24 #include "hw/virtio/virtio-access.h" 25 #include "hw/virtio/virtio-bus.h" 26 #include "hw/s390x/adapter.h" 27 #include "hw/s390x/s390_flic.h" 28 29 #include "ioinst.h" 30 #include "css.h" 31 #include "virtio-ccw.h" 32 #include "trace.h" 33 34 static QTAILQ_HEAD(, IndAddr) indicator_addresses = 35 QTAILQ_HEAD_INITIALIZER(indicator_addresses); 36 37 static IndAddr *get_indicator(hwaddr ind_addr, int len) 38 { 39 IndAddr *indicator; 40 41 QTAILQ_FOREACH(indicator, &indicator_addresses, sibling) { 42 if (indicator->addr == ind_addr) { 43 indicator->refcnt++; 44 return indicator; 45 } 46 } 47 indicator = g_new0(IndAddr, 1); 48 indicator->addr = ind_addr; 49 indicator->len = len; 50 indicator->refcnt = 1; 51 QTAILQ_INSERT_TAIL(&indicator_addresses, indicator, sibling); 52 return indicator; 53 } 54 55 static int s390_io_adapter_map(AdapterInfo *adapter, uint64_t map_addr, 56 bool do_map) 57 { 58 S390FLICState *fs = s390_get_flic(); 59 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 60 61 return fsc->io_adapter_map(fs, adapter->adapter_id, map_addr, do_map); 62 } 63 64 static void release_indicator(AdapterInfo *adapter, IndAddr *indicator) 65 { 66 assert(indicator->refcnt > 0); 67 indicator->refcnt--; 68 if (indicator->refcnt > 0) { 69 return; 70 } 71 QTAILQ_REMOVE(&indicator_addresses, indicator, sibling); 72 if (indicator->map) { 73 s390_io_adapter_map(adapter, indicator->map, false); 74 } 75 g_free(indicator); 76 } 77 78 static int map_indicator(AdapterInfo *adapter, IndAddr *indicator) 79 { 80 int ret; 81 82 if (indicator->map) { 83 return 0; /* already mapped is not an error */ 84 } 85 indicator->map = indicator->addr; 86 ret = s390_io_adapter_map(adapter, indicator->map, true); 87 if ((ret != 0) && (ret != -ENOSYS)) { 88 goto out_err; 89 } 90 return 0; 91 92 out_err: 93 indicator->map = 0; 94 return ret; 95 } 96 97 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 98 VirtioCcwDevice *dev); 99 100 static void virtual_css_bus_reset(BusState *qbus) 101 { 102 /* This should actually be modelled via the generic css */ 103 css_reset(); 104 } 105 106 107 static void virtual_css_bus_class_init(ObjectClass *klass, void *data) 108 { 109 BusClass *k = BUS_CLASS(klass); 110 111 k->reset = virtual_css_bus_reset; 112 } 113 114 static const TypeInfo virtual_css_bus_info = { 115 .name = TYPE_VIRTUAL_CSS_BUS, 116 .parent = TYPE_BUS, 117 .instance_size = sizeof(VirtualCssBus), 118 .class_init = virtual_css_bus_class_init, 119 }; 120 121 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch) 122 { 123 VirtIODevice *vdev = NULL; 124 VirtioCcwDevice *dev = sch->driver_data; 125 126 if (dev) { 127 vdev = virtio_bus_get_device(&dev->bus); 128 } 129 return vdev; 130 } 131 132 static int virtio_ccw_set_guest2host_notifier(VirtioCcwDevice *dev, int n, 133 bool assign, bool set_handler) 134 { 135 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 136 VirtQueue *vq = virtio_get_queue(vdev, n); 137 EventNotifier *notifier = virtio_queue_get_host_notifier(vq); 138 int r = 0; 139 SubchDev *sch = dev->sch; 140 uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid; 141 142 if (assign) { 143 r = event_notifier_init(notifier, 1); 144 if (r < 0) { 145 error_report("%s: unable to init event notifier: %d", __func__, r); 146 return r; 147 } 148 virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler); 149 r = s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); 150 if (r < 0) { 151 error_report("%s: unable to assign ioeventfd: %d", __func__, r); 152 virtio_queue_set_host_notifier_fd_handler(vq, false, false); 153 event_notifier_cleanup(notifier); 154 return r; 155 } 156 } else { 157 virtio_queue_set_host_notifier_fd_handler(vq, false, false); 158 s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); 159 event_notifier_cleanup(notifier); 160 } 161 return r; 162 } 163 164 static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev) 165 { 166 VirtIODevice *vdev; 167 int n, r; 168 169 if (!(dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) || 170 dev->ioeventfd_disabled || 171 dev->ioeventfd_started) { 172 return; 173 } 174 vdev = virtio_bus_get_device(&dev->bus); 175 for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) { 176 if (!virtio_queue_get_num(vdev, n)) { 177 continue; 178 } 179 r = virtio_ccw_set_guest2host_notifier(dev, n, true, true); 180 if (r < 0) { 181 goto assign_error; 182 } 183 } 184 dev->ioeventfd_started = true; 185 return; 186 187 assign_error: 188 while (--n >= 0) { 189 if (!virtio_queue_get_num(vdev, n)) { 190 continue; 191 } 192 r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); 193 assert(r >= 0); 194 } 195 dev->ioeventfd_started = false; 196 /* Disable ioeventfd for this device. */ 197 dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; 198 error_report("%s: failed. Fallback to userspace (slower).", __func__); 199 } 200 201 static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev) 202 { 203 VirtIODevice *vdev; 204 int n, r; 205 206 if (!dev->ioeventfd_started) { 207 return; 208 } 209 vdev = virtio_bus_get_device(&dev->bus); 210 for (n = 0; n < VIRTIO_CCW_QUEUE_MAX; n++) { 211 if (!virtio_queue_get_num(vdev, n)) { 212 continue; 213 } 214 r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); 215 assert(r >= 0); 216 } 217 dev->ioeventfd_started = false; 218 } 219 220 VirtualCssBus *virtual_css_bus_init(void) 221 { 222 VirtualCssBus *cbus; 223 BusState *bus; 224 DeviceState *dev; 225 226 /* Create bridge device */ 227 dev = qdev_create(NULL, "virtual-css-bridge"); 228 qdev_init_nofail(dev); 229 230 /* Create bus on bridge device */ 231 bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css"); 232 cbus = VIRTUAL_CSS_BUS(bus); 233 234 /* Enable hotplugging */ 235 qbus_set_hotplug_handler(bus, dev, &error_abort); 236 237 return cbus; 238 } 239 240 /* Communication blocks used by several channel commands. */ 241 typedef struct VqInfoBlockLegacy { 242 uint64_t queue; 243 uint32_t align; 244 uint16_t index; 245 uint16_t num; 246 } QEMU_PACKED VqInfoBlockLegacy; 247 248 typedef struct VqInfoBlock { 249 uint64_t desc; 250 uint32_t res0; 251 uint16_t index; 252 uint16_t num; 253 uint64_t avail; 254 uint64_t used; 255 } QEMU_PACKED VqInfoBlock; 256 257 typedef struct VqConfigBlock { 258 uint16_t index; 259 uint16_t num_max; 260 } QEMU_PACKED VqConfigBlock; 261 262 typedef struct VirtioFeatDesc { 263 uint32_t features; 264 uint8_t index; 265 } QEMU_PACKED VirtioFeatDesc; 266 267 typedef struct VirtioThinintInfo { 268 hwaddr summary_indicator; 269 hwaddr device_indicator; 270 uint64_t ind_bit; 271 uint8_t isc; 272 } QEMU_PACKED VirtioThinintInfo; 273 274 typedef struct VirtioRevInfo { 275 uint16_t revision; 276 uint16_t length; 277 uint8_t data[0]; 278 } QEMU_PACKED VirtioRevInfo; 279 280 /* Specify where the virtqueues for the subchannel are in guest memory. */ 281 static int virtio_ccw_set_vqs(SubchDev *sch, VqInfoBlock *info, 282 VqInfoBlockLegacy *linfo) 283 { 284 VirtIODevice *vdev = virtio_ccw_get_vdev(sch); 285 uint16_t index = info ? info->index : linfo->index; 286 uint16_t num = info ? info->num : linfo->num; 287 uint64_t desc = info ? info->desc : linfo->queue; 288 289 if (index >= VIRTIO_CCW_QUEUE_MAX) { 290 return -EINVAL; 291 } 292 293 /* Current code in virtio.c relies on 4K alignment. */ 294 if (linfo && desc && (linfo->align != 4096)) { 295 return -EINVAL; 296 } 297 298 if (!vdev) { 299 return -EINVAL; 300 } 301 302 if (info) { 303 virtio_queue_set_rings(vdev, index, desc, info->avail, info->used); 304 } else { 305 virtio_queue_set_addr(vdev, index, desc); 306 } 307 if (!desc) { 308 virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR); 309 } else { 310 if (info) { 311 /* virtio-1 allows changing the ring size. */ 312 if (virtio_queue_get_num(vdev, index) < num) { 313 /* Fail if we exceed the maximum number. */ 314 return -EINVAL; 315 } 316 virtio_queue_set_num(vdev, index, num); 317 } else if (virtio_queue_get_num(vdev, index) > num) { 318 /* Fail if we don't have a big enough queue. */ 319 return -EINVAL; 320 } 321 /* We ignore possible increased num for legacy for compatibility. */ 322 virtio_queue_set_vector(vdev, index, index); 323 } 324 /* tell notify handler in case of config change */ 325 vdev->config_vector = VIRTIO_CCW_QUEUE_MAX; 326 return 0; 327 } 328 329 static void virtio_ccw_reset_virtio(VirtioCcwDevice *dev, VirtIODevice *vdev) 330 { 331 virtio_ccw_stop_ioeventfd(dev); 332 virtio_reset(vdev); 333 if (dev->indicators) { 334 release_indicator(&dev->routes.adapter, dev->indicators); 335 dev->indicators = NULL; 336 } 337 if (dev->indicators2) { 338 release_indicator(&dev->routes.adapter, dev->indicators2); 339 dev->indicators2 = NULL; 340 } 341 if (dev->summary_indicator) { 342 release_indicator(&dev->routes.adapter, dev->summary_indicator); 343 dev->summary_indicator = NULL; 344 } 345 dev->sch->thinint_active = false; 346 } 347 348 static int virtio_ccw_handle_set_vq(SubchDev *sch, CCW1 ccw, bool check_len, 349 bool is_legacy) 350 { 351 int ret; 352 VqInfoBlock info; 353 VqInfoBlockLegacy linfo; 354 size_t info_len = is_legacy ? sizeof(linfo) : sizeof(info); 355 356 if (check_len) { 357 if (ccw.count != info_len) { 358 return -EINVAL; 359 } 360 } else if (ccw.count < info_len) { 361 /* Can't execute command. */ 362 return -EINVAL; 363 } 364 if (!ccw.cda) { 365 return -EFAULT; 366 } 367 if (is_legacy) { 368 linfo.queue = address_space_ldq_be(&address_space_memory, ccw.cda, 369 MEMTXATTRS_UNSPECIFIED, NULL); 370 linfo.align = address_space_ldl_be(&address_space_memory, 371 ccw.cda + sizeof(linfo.queue), 372 MEMTXATTRS_UNSPECIFIED, 373 NULL); 374 linfo.index = address_space_lduw_be(&address_space_memory, 375 ccw.cda + sizeof(linfo.queue) 376 + sizeof(linfo.align), 377 MEMTXATTRS_UNSPECIFIED, 378 NULL); 379 linfo.num = address_space_lduw_be(&address_space_memory, 380 ccw.cda + sizeof(linfo.queue) 381 + sizeof(linfo.align) 382 + sizeof(linfo.index), 383 MEMTXATTRS_UNSPECIFIED, 384 NULL); 385 ret = virtio_ccw_set_vqs(sch, NULL, &linfo); 386 } else { 387 info.desc = address_space_ldq_be(&address_space_memory, ccw.cda, 388 MEMTXATTRS_UNSPECIFIED, NULL); 389 info.index = address_space_lduw_be(&address_space_memory, 390 ccw.cda + sizeof(info.desc) 391 + sizeof(info.res0), 392 MEMTXATTRS_UNSPECIFIED, NULL); 393 info.num = address_space_lduw_be(&address_space_memory, 394 ccw.cda + sizeof(info.desc) 395 + sizeof(info.res0) 396 + sizeof(info.index), 397 MEMTXATTRS_UNSPECIFIED, NULL); 398 info.avail = address_space_ldq_be(&address_space_memory, 399 ccw.cda + sizeof(info.desc) 400 + sizeof(info.res0) 401 + sizeof(info.index) 402 + sizeof(info.num), 403 MEMTXATTRS_UNSPECIFIED, NULL); 404 info.used = address_space_ldq_be(&address_space_memory, 405 ccw.cda + sizeof(info.desc) 406 + sizeof(info.res0) 407 + sizeof(info.index) 408 + sizeof(info.num) 409 + sizeof(info.avail), 410 MEMTXATTRS_UNSPECIFIED, NULL); 411 ret = virtio_ccw_set_vqs(sch, &info, NULL); 412 } 413 sch->curr_status.scsw.count = 0; 414 return ret; 415 } 416 417 static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) 418 { 419 int ret; 420 VirtioRevInfo revinfo; 421 uint8_t status; 422 VirtioFeatDesc features; 423 void *config; 424 hwaddr indicators; 425 VqConfigBlock vq_config; 426 VirtioCcwDevice *dev = sch->driver_data; 427 VirtIODevice *vdev = virtio_ccw_get_vdev(sch); 428 bool check_len; 429 int len; 430 hwaddr hw_len; 431 VirtioThinintInfo *thinint; 432 433 if (!dev) { 434 return -EINVAL; 435 } 436 437 trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid, 438 ccw.cmd_code); 439 check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC)); 440 441 /* Look at the command. */ 442 switch (ccw.cmd_code) { 443 case CCW_CMD_SET_VQ: 444 ret = virtio_ccw_handle_set_vq(sch, ccw, check_len, dev->revision < 1); 445 break; 446 case CCW_CMD_VDEV_RESET: 447 virtio_ccw_reset_virtio(dev, vdev); 448 ret = 0; 449 break; 450 case CCW_CMD_READ_FEAT: 451 if (check_len) { 452 if (ccw.count != sizeof(features)) { 453 ret = -EINVAL; 454 break; 455 } 456 } else if (ccw.count < sizeof(features)) { 457 /* Can't execute command. */ 458 ret = -EINVAL; 459 break; 460 } 461 if (!ccw.cda) { 462 ret = -EFAULT; 463 } else { 464 features.index = address_space_ldub(&address_space_memory, 465 ccw.cda 466 + sizeof(features.features), 467 MEMTXATTRS_UNSPECIFIED, 468 NULL); 469 if (features.index == 0) { 470 if (dev->revision >= 1) { 471 /* Don't offer legacy features for modern devices. */ 472 features.features = (uint32_t) 473 (vdev->host_features & ~VIRTIO_LEGACY_FEATURES); 474 } else { 475 features.features = (uint32_t)vdev->host_features; 476 } 477 } else if ((features.index == 1) && (dev->revision >= 1)) { 478 /* 479 * Only offer feature bits beyond 31 if the guest has 480 * negotiated at least revision 1. 481 */ 482 features.features = (uint32_t)(vdev->host_features >> 32); 483 } else { 484 /* Return zeroes if the guest supports more feature bits. */ 485 features.features = 0; 486 } 487 address_space_stl_le(&address_space_memory, ccw.cda, 488 features.features, MEMTXATTRS_UNSPECIFIED, 489 NULL); 490 sch->curr_status.scsw.count = ccw.count - sizeof(features); 491 ret = 0; 492 } 493 break; 494 case CCW_CMD_WRITE_FEAT: 495 if (check_len) { 496 if (ccw.count != sizeof(features)) { 497 ret = -EINVAL; 498 break; 499 } 500 } else if (ccw.count < sizeof(features)) { 501 /* Can't execute command. */ 502 ret = -EINVAL; 503 break; 504 } 505 if (!ccw.cda) { 506 ret = -EFAULT; 507 } else { 508 features.index = address_space_ldub(&address_space_memory, 509 ccw.cda 510 + sizeof(features.features), 511 MEMTXATTRS_UNSPECIFIED, 512 NULL); 513 features.features = address_space_ldl_le(&address_space_memory, 514 ccw.cda, 515 MEMTXATTRS_UNSPECIFIED, 516 NULL); 517 if (features.index == 0) { 518 virtio_set_features(vdev, 519 (vdev->guest_features & 0xffffffff00000000ULL) | 520 features.features); 521 } else if ((features.index == 1) && (dev->revision >= 1)) { 522 /* 523 * If the guest did not negotiate at least revision 1, 524 * we did not offer it any feature bits beyond 31. Such a 525 * guest passing us any bit here is therefore buggy. 526 */ 527 virtio_set_features(vdev, 528 (vdev->guest_features & 0x00000000ffffffffULL) | 529 ((uint64_t)features.features << 32)); 530 } else { 531 /* 532 * If the guest supports more feature bits, assert that it 533 * passes us zeroes for those we don't support. 534 */ 535 if (features.features) { 536 fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n", 537 features.index, features.features); 538 /* XXX: do a unit check here? */ 539 } 540 } 541 sch->curr_status.scsw.count = ccw.count - sizeof(features); 542 ret = 0; 543 } 544 break; 545 case CCW_CMD_READ_CONF: 546 if (check_len) { 547 if (ccw.count > vdev->config_len) { 548 ret = -EINVAL; 549 break; 550 } 551 } 552 len = MIN(ccw.count, vdev->config_len); 553 if (!ccw.cda) { 554 ret = -EFAULT; 555 } else { 556 virtio_bus_get_vdev_config(&dev->bus, vdev->config); 557 /* XXX config space endianness */ 558 cpu_physical_memory_write(ccw.cda, vdev->config, len); 559 sch->curr_status.scsw.count = ccw.count - len; 560 ret = 0; 561 } 562 break; 563 case CCW_CMD_WRITE_CONF: 564 if (check_len) { 565 if (ccw.count > vdev->config_len) { 566 ret = -EINVAL; 567 break; 568 } 569 } 570 len = MIN(ccw.count, vdev->config_len); 571 hw_len = len; 572 if (!ccw.cda) { 573 ret = -EFAULT; 574 } else { 575 config = cpu_physical_memory_map(ccw.cda, &hw_len, 0); 576 if (!config) { 577 ret = -EFAULT; 578 } else { 579 len = hw_len; 580 /* XXX config space endianness */ 581 memcpy(vdev->config, config, len); 582 cpu_physical_memory_unmap(config, hw_len, 0, hw_len); 583 virtio_bus_set_vdev_config(&dev->bus, vdev->config); 584 sch->curr_status.scsw.count = ccw.count - len; 585 ret = 0; 586 } 587 } 588 break; 589 case CCW_CMD_WRITE_STATUS: 590 if (check_len) { 591 if (ccw.count != sizeof(status)) { 592 ret = -EINVAL; 593 break; 594 } 595 } else if (ccw.count < sizeof(status)) { 596 /* Can't execute command. */ 597 ret = -EINVAL; 598 break; 599 } 600 if (!ccw.cda) { 601 ret = -EFAULT; 602 } else { 603 status = address_space_ldub(&address_space_memory, ccw.cda, 604 MEMTXATTRS_UNSPECIFIED, NULL); 605 if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) { 606 virtio_ccw_stop_ioeventfd(dev); 607 } 608 if (virtio_set_status(vdev, status) == 0) { 609 if (vdev->status == 0) { 610 virtio_ccw_reset_virtio(dev, vdev); 611 } 612 if (status & VIRTIO_CONFIG_S_DRIVER_OK) { 613 virtio_ccw_start_ioeventfd(dev); 614 } 615 sch->curr_status.scsw.count = ccw.count - sizeof(status); 616 ret = 0; 617 } else { 618 /* Trigger a command reject. */ 619 ret = -ENOSYS; 620 } 621 } 622 break; 623 case CCW_CMD_SET_IND: 624 if (check_len) { 625 if (ccw.count != sizeof(indicators)) { 626 ret = -EINVAL; 627 break; 628 } 629 } else if (ccw.count < sizeof(indicators)) { 630 /* Can't execute command. */ 631 ret = -EINVAL; 632 break; 633 } 634 if (sch->thinint_active) { 635 /* Trigger a command reject. */ 636 ret = -ENOSYS; 637 break; 638 } 639 if (!ccw.cda) { 640 ret = -EFAULT; 641 } else { 642 indicators = address_space_ldq_be(&address_space_memory, ccw.cda, 643 MEMTXATTRS_UNSPECIFIED, NULL); 644 dev->indicators = get_indicator(indicators, sizeof(uint64_t)); 645 sch->curr_status.scsw.count = ccw.count - sizeof(indicators); 646 ret = 0; 647 } 648 break; 649 case CCW_CMD_SET_CONF_IND: 650 if (check_len) { 651 if (ccw.count != sizeof(indicators)) { 652 ret = -EINVAL; 653 break; 654 } 655 } else if (ccw.count < sizeof(indicators)) { 656 /* Can't execute command. */ 657 ret = -EINVAL; 658 break; 659 } 660 if (!ccw.cda) { 661 ret = -EFAULT; 662 } else { 663 indicators = address_space_ldq_be(&address_space_memory, ccw.cda, 664 MEMTXATTRS_UNSPECIFIED, NULL); 665 dev->indicators2 = get_indicator(indicators, sizeof(uint64_t)); 666 sch->curr_status.scsw.count = ccw.count - sizeof(indicators); 667 ret = 0; 668 } 669 break; 670 case CCW_CMD_READ_VQ_CONF: 671 if (check_len) { 672 if (ccw.count != sizeof(vq_config)) { 673 ret = -EINVAL; 674 break; 675 } 676 } else if (ccw.count < sizeof(vq_config)) { 677 /* Can't execute command. */ 678 ret = -EINVAL; 679 break; 680 } 681 if (!ccw.cda) { 682 ret = -EFAULT; 683 } else { 684 vq_config.index = address_space_lduw_be(&address_space_memory, 685 ccw.cda, 686 MEMTXATTRS_UNSPECIFIED, 687 NULL); 688 if (vq_config.index >= VIRTIO_CCW_QUEUE_MAX) { 689 ret = -EINVAL; 690 break; 691 } 692 vq_config.num_max = virtio_queue_get_num(vdev, 693 vq_config.index); 694 address_space_stw_be(&address_space_memory, 695 ccw.cda + sizeof(vq_config.index), 696 vq_config.num_max, 697 MEMTXATTRS_UNSPECIFIED, 698 NULL); 699 sch->curr_status.scsw.count = ccw.count - sizeof(vq_config); 700 ret = 0; 701 } 702 break; 703 case CCW_CMD_SET_IND_ADAPTER: 704 if (check_len) { 705 if (ccw.count != sizeof(*thinint)) { 706 ret = -EINVAL; 707 break; 708 } 709 } else if (ccw.count < sizeof(*thinint)) { 710 /* Can't execute command. */ 711 ret = -EINVAL; 712 break; 713 } 714 len = sizeof(*thinint); 715 hw_len = len; 716 if (!ccw.cda) { 717 ret = -EFAULT; 718 } else if (dev->indicators && !sch->thinint_active) { 719 /* Trigger a command reject. */ 720 ret = -ENOSYS; 721 } else { 722 thinint = cpu_physical_memory_map(ccw.cda, &hw_len, 0); 723 if (!thinint) { 724 ret = -EFAULT; 725 } else { 726 uint64_t ind_bit = ldq_be_p(&thinint->ind_bit); 727 728 len = hw_len; 729 dev->summary_indicator = 730 get_indicator(ldq_be_p(&thinint->summary_indicator), 731 sizeof(uint8_t)); 732 dev->indicators = 733 get_indicator(ldq_be_p(&thinint->device_indicator), 734 ind_bit / 8 + 1); 735 dev->thinint_isc = thinint->isc; 736 dev->routes.adapter.ind_offset = ind_bit; 737 dev->routes.adapter.summary_offset = 7; 738 cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len); 739 ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, 740 dev->thinint_isc, true, false, 741 &dev->routes.adapter.adapter_id); 742 assert(ret == 0); 743 sch->thinint_active = ((dev->indicators != NULL) && 744 (dev->summary_indicator != NULL)); 745 sch->curr_status.scsw.count = ccw.count - len; 746 ret = 0; 747 } 748 } 749 break; 750 case CCW_CMD_SET_VIRTIO_REV: 751 len = sizeof(revinfo); 752 if (ccw.count < len) { 753 ret = -EINVAL; 754 break; 755 } 756 if (!ccw.cda) { 757 ret = -EFAULT; 758 break; 759 } 760 revinfo.revision = 761 address_space_lduw_be(&address_space_memory, ccw.cda, 762 MEMTXATTRS_UNSPECIFIED, NULL); 763 revinfo.length = 764 address_space_lduw_be(&address_space_memory, 765 ccw.cda + sizeof(revinfo.revision), 766 MEMTXATTRS_UNSPECIFIED, NULL); 767 if (ccw.count < len + revinfo.length || 768 (check_len && ccw.count > len + revinfo.length)) { 769 ret = -EINVAL; 770 break; 771 } 772 /* 773 * Once we start to support revisions with additional data, we'll 774 * need to fetch it here. Nothing to do for now, though. 775 */ 776 if (dev->revision >= 0 || 777 revinfo.revision > virtio_ccw_rev_max(dev)) { 778 ret = -ENOSYS; 779 break; 780 } 781 ret = 0; 782 dev->revision = revinfo.revision; 783 break; 784 default: 785 ret = -ENOSYS; 786 break; 787 } 788 return ret; 789 } 790 791 static void virtio_sch_disable_cb(SubchDev *sch) 792 { 793 VirtioCcwDevice *dev = sch->driver_data; 794 795 dev->revision = -1; 796 } 797 798 static void virtio_ccw_device_realize(VirtioCcwDevice *dev, Error **errp) 799 { 800 unsigned int cssid = 0; 801 unsigned int ssid = 0; 802 unsigned int schid; 803 unsigned int devno; 804 bool have_devno = false; 805 bool found = false; 806 SubchDev *sch; 807 int num; 808 Error *err = NULL; 809 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 810 811 sch = g_malloc0(sizeof(SubchDev)); 812 813 sch->driver_data = dev; 814 dev->sch = sch; 815 816 dev->indicators = NULL; 817 818 /* Initialize subchannel structure. */ 819 sch->channel_prog = 0x0; 820 sch->last_cmd_valid = false; 821 sch->thinint_active = false; 822 /* 823 * Use a device number if provided. Otherwise, fall back to subchannel 824 * number. 825 */ 826 if (dev->bus_id) { 827 num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno); 828 if (num == 3) { 829 if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) { 830 error_setg(errp, "Invalid cssid or ssid: cssid %x, ssid %x", 831 cssid, ssid); 832 goto out_err; 833 } 834 /* Enforce use of virtual cssid. */ 835 if (cssid != VIRTUAL_CSSID) { 836 error_setg(errp, "cssid %x not valid for virtio devices", 837 cssid); 838 goto out_err; 839 } 840 if (css_devno_used(cssid, ssid, devno)) { 841 error_setg(errp, "Device %x.%x.%04x already exists", 842 cssid, ssid, devno); 843 goto out_err; 844 } 845 sch->cssid = cssid; 846 sch->ssid = ssid; 847 sch->devno = devno; 848 have_devno = true; 849 } else { 850 error_setg(errp, "Malformed devno parameter '%s'", dev->bus_id); 851 goto out_err; 852 } 853 } 854 855 /* Find the next free id. */ 856 if (have_devno) { 857 for (schid = 0; schid <= MAX_SCHID; schid++) { 858 if (!css_find_subch(1, cssid, ssid, schid)) { 859 sch->schid = schid; 860 css_subch_assign(cssid, ssid, schid, devno, sch); 861 found = true; 862 break; 863 } 864 } 865 if (!found) { 866 error_setg(errp, "No free subchannel found for %x.%x.%04x", 867 cssid, ssid, devno); 868 goto out_err; 869 } 870 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 871 "user-configured"); 872 } else { 873 cssid = VIRTUAL_CSSID; 874 for (ssid = 0; ssid <= MAX_SSID; ssid++) { 875 for (schid = 0; schid <= MAX_SCHID; schid++) { 876 if (!css_find_subch(1, cssid, ssid, schid)) { 877 sch->cssid = cssid; 878 sch->ssid = ssid; 879 sch->schid = schid; 880 devno = schid; 881 /* 882 * If the devno is already taken, look further in this 883 * subchannel set. 884 */ 885 while (css_devno_used(cssid, ssid, devno)) { 886 if (devno == MAX_SCHID) { 887 devno = 0; 888 } else if (devno == schid - 1) { 889 error_setg(errp, "No free devno found"); 890 goto out_err; 891 } else { 892 devno++; 893 } 894 } 895 sch->devno = devno; 896 css_subch_assign(cssid, ssid, schid, devno, sch); 897 found = true; 898 break; 899 } 900 } 901 if (found) { 902 break; 903 } 904 } 905 if (!found) { 906 error_setg(errp, "Virtual channel subsystem is full!"); 907 goto out_err; 908 } 909 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 910 "auto-configured"); 911 } 912 913 /* Build initial schib. */ 914 css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE); 915 916 sch->ccw_cb = virtio_ccw_cb; 917 sch->disable_cb = virtio_sch_disable_cb; 918 919 /* Build senseid data. */ 920 memset(&sch->id, 0, sizeof(SenseId)); 921 sch->id.reserved = 0xff; 922 sch->id.cu_type = VIRTIO_CCW_CU_TYPE; 923 924 dev->revision = -1; 925 926 if (k->realize) { 927 k->realize(dev, &err); 928 } 929 if (err) { 930 error_propagate(errp, err); 931 css_subch_assign(cssid, ssid, schid, devno, NULL); 932 goto out_err; 933 } 934 935 return; 936 937 out_err: 938 dev->sch = NULL; 939 g_free(sch); 940 } 941 942 static int virtio_ccw_exit(VirtioCcwDevice *dev) 943 { 944 SubchDev *sch = dev->sch; 945 946 if (sch) { 947 css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); 948 g_free(sch); 949 } 950 if (dev->indicators) { 951 release_indicator(&dev->routes.adapter, dev->indicators); 952 dev->indicators = NULL; 953 } 954 return 0; 955 } 956 957 static void virtio_ccw_net_realize(VirtioCcwDevice *ccw_dev, Error **errp) 958 { 959 DeviceState *qdev = DEVICE(ccw_dev); 960 VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); 961 DeviceState *vdev = DEVICE(&dev->vdev); 962 Error *err = NULL; 963 964 virtio_net_set_netclient_name(&dev->vdev, qdev->id, 965 object_get_typename(OBJECT(qdev))); 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 static void virtio_ccw_net_instance_init(Object *obj) 974 { 975 VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); 976 977 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 978 TYPE_VIRTIO_NET); 979 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 980 "bootindex", &error_abort); 981 } 982 983 static void virtio_ccw_blk_realize(VirtioCcwDevice *ccw_dev, Error **errp) 984 { 985 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); 986 DeviceState *vdev = DEVICE(&dev->vdev); 987 Error *err = NULL; 988 989 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 990 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 991 if (err) { 992 error_propagate(errp, err); 993 } 994 } 995 996 static void virtio_ccw_blk_instance_init(Object *obj) 997 { 998 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); 999 1000 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1001 TYPE_VIRTIO_BLK); 1002 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread", 1003 &error_abort); 1004 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 1005 "bootindex", &error_abort); 1006 } 1007 1008 static void virtio_ccw_serial_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1009 { 1010 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); 1011 DeviceState *vdev = DEVICE(&dev->vdev); 1012 DeviceState *proxy = DEVICE(ccw_dev); 1013 Error *err = NULL; 1014 char *bus_name; 1015 1016 /* 1017 * For command line compatibility, this sets the virtio-serial-device bus 1018 * name as before. 1019 */ 1020 if (proxy->id) { 1021 bus_name = g_strdup_printf("%s.0", proxy->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 1034 static void virtio_ccw_serial_instance_init(Object *obj) 1035 { 1036 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); 1037 1038 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1039 TYPE_VIRTIO_SERIAL); 1040 } 1041 1042 static void virtio_ccw_balloon_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1043 { 1044 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); 1045 DeviceState *vdev = DEVICE(&dev->vdev); 1046 Error *err = NULL; 1047 1048 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1049 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1050 if (err) { 1051 error_propagate(errp, err); 1052 } 1053 } 1054 1055 static void virtio_ccw_balloon_instance_init(Object *obj) 1056 { 1057 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); 1058 1059 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1060 TYPE_VIRTIO_BALLOON); 1061 object_property_add_alias(obj, "guest-stats", OBJECT(&dev->vdev), 1062 "guest-stats", &error_abort); 1063 object_property_add_alias(obj, "guest-stats-polling-interval", 1064 OBJECT(&dev->vdev), 1065 "guest-stats-polling-interval", &error_abort); 1066 } 1067 1068 static void virtio_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1069 { 1070 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); 1071 DeviceState *vdev = DEVICE(&dev->vdev); 1072 DeviceState *qdev = DEVICE(ccw_dev); 1073 Error *err = NULL; 1074 char *bus_name; 1075 1076 /* 1077 * For command line compatibility, this sets the virtio-scsi-device bus 1078 * name as before. 1079 */ 1080 if (qdev->id) { 1081 bus_name = g_strdup_printf("%s.0", qdev->id); 1082 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 1083 g_free(bus_name); 1084 } 1085 1086 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1087 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1088 if (err) { 1089 error_propagate(errp, err); 1090 } 1091 } 1092 1093 static void virtio_ccw_scsi_instance_init(Object *obj) 1094 { 1095 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); 1096 1097 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1098 TYPE_VIRTIO_SCSI); 1099 object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev), "iothread", 1100 &error_abort); 1101 } 1102 1103 #ifdef CONFIG_VHOST_SCSI 1104 static void vhost_ccw_scsi_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1105 { 1106 VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); 1107 DeviceState *vdev = DEVICE(&dev->vdev); 1108 Error *err = NULL; 1109 1110 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1111 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1112 if (err) { 1113 error_propagate(errp, err); 1114 } 1115 } 1116 1117 static void vhost_ccw_scsi_instance_init(Object *obj) 1118 { 1119 VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); 1120 1121 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1122 TYPE_VHOST_SCSI); 1123 } 1124 #endif 1125 1126 static void virtio_ccw_rng_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1127 { 1128 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); 1129 DeviceState *vdev = DEVICE(&dev->vdev); 1130 Error *err = NULL; 1131 1132 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1133 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1134 if (err) { 1135 error_propagate(errp, err); 1136 return; 1137 } 1138 1139 object_property_set_link(OBJECT(dev), 1140 OBJECT(dev->vdev.conf.rng), "rng", 1141 NULL); 1142 } 1143 1144 /* DeviceState to VirtioCcwDevice. Note: used on datapath, 1145 * be careful and test performance if you change this. 1146 */ 1147 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) 1148 { 1149 return container_of(d, VirtioCcwDevice, parent_obj); 1150 } 1151 1152 static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc, 1153 uint8_t to_be_set) 1154 { 1155 uint8_t ind_old, ind_new; 1156 hwaddr len = 1; 1157 uint8_t *ind_addr; 1158 1159 ind_addr = cpu_physical_memory_map(ind_loc, &len, 1); 1160 if (!ind_addr) { 1161 error_report("%s(%x.%x.%04x): unable to access indicator", 1162 __func__, sch->cssid, sch->ssid, sch->schid); 1163 return -1; 1164 } 1165 do { 1166 ind_old = *ind_addr; 1167 ind_new = ind_old | to_be_set; 1168 } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old); 1169 cpu_physical_memory_unmap(ind_addr, len, 1, len); 1170 1171 return ind_old; 1172 } 1173 1174 static void virtio_ccw_notify(DeviceState *d, uint16_t vector) 1175 { 1176 VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); 1177 SubchDev *sch = dev->sch; 1178 uint64_t indicators; 1179 1180 if (vector >= 128) { 1181 return; 1182 } 1183 1184 if (vector < VIRTIO_CCW_QUEUE_MAX) { 1185 if (!dev->indicators) { 1186 return; 1187 } 1188 if (sch->thinint_active) { 1189 /* 1190 * In the adapter interrupt case, indicators points to a 1191 * memory area that may be (way) larger than 64 bit and 1192 * ind_bit indicates the start of the indicators in a big 1193 * endian notation. 1194 */ 1195 uint64_t ind_bit = dev->routes.adapter.ind_offset; 1196 1197 virtio_set_ind_atomic(sch, dev->indicators->addr + 1198 (ind_bit + vector) / 8, 1199 0x80 >> ((ind_bit + vector) % 8)); 1200 if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr, 1201 0x01)) { 1202 css_adapter_interrupt(dev->thinint_isc); 1203 } 1204 } else { 1205 indicators = address_space_ldq(&address_space_memory, 1206 dev->indicators->addr, 1207 MEMTXATTRS_UNSPECIFIED, 1208 NULL); 1209 indicators |= 1ULL << vector; 1210 address_space_stq(&address_space_memory, dev->indicators->addr, 1211 indicators, MEMTXATTRS_UNSPECIFIED, NULL); 1212 css_conditional_io_interrupt(sch); 1213 } 1214 } else { 1215 if (!dev->indicators2) { 1216 return; 1217 } 1218 vector = 0; 1219 indicators = address_space_ldq(&address_space_memory, 1220 dev->indicators2->addr, 1221 MEMTXATTRS_UNSPECIFIED, 1222 NULL); 1223 indicators |= 1ULL << vector; 1224 address_space_stq(&address_space_memory, dev->indicators2->addr, 1225 indicators, MEMTXATTRS_UNSPECIFIED, NULL); 1226 css_conditional_io_interrupt(sch); 1227 } 1228 } 1229 1230 static void virtio_ccw_reset(DeviceState *d) 1231 { 1232 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1233 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1234 1235 virtio_ccw_reset_virtio(dev, vdev); 1236 css_reset_sch(dev->sch); 1237 } 1238 1239 static void virtio_ccw_vmstate_change(DeviceState *d, bool running) 1240 { 1241 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1242 1243 if (running) { 1244 virtio_ccw_start_ioeventfd(dev); 1245 } else { 1246 virtio_ccw_stop_ioeventfd(dev); 1247 } 1248 } 1249 1250 static bool virtio_ccw_query_guest_notifiers(DeviceState *d) 1251 { 1252 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1253 1254 return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA); 1255 } 1256 1257 static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign) 1258 { 1259 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1260 1261 /* Stop using the generic ioeventfd, we are doing eventfd handling 1262 * ourselves below */ 1263 dev->ioeventfd_disabled = assign; 1264 if (assign) { 1265 virtio_ccw_stop_ioeventfd(dev); 1266 } 1267 return virtio_ccw_set_guest2host_notifier(dev, n, assign, false); 1268 } 1269 1270 static int virtio_ccw_get_mappings(VirtioCcwDevice *dev) 1271 { 1272 int r; 1273 1274 if (!dev->sch->thinint_active) { 1275 return -EINVAL; 1276 } 1277 1278 r = map_indicator(&dev->routes.adapter, dev->summary_indicator); 1279 if (r) { 1280 return r; 1281 } 1282 r = map_indicator(&dev->routes.adapter, dev->indicators); 1283 if (r) { 1284 return r; 1285 } 1286 dev->routes.adapter.summary_addr = dev->summary_indicator->map; 1287 dev->routes.adapter.ind_addr = dev->indicators->map; 1288 1289 return 0; 1290 } 1291 1292 static int virtio_ccw_setup_irqroutes(VirtioCcwDevice *dev, int nvqs) 1293 { 1294 int i; 1295 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1296 int ret; 1297 S390FLICState *fs = s390_get_flic(); 1298 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 1299 1300 ret = virtio_ccw_get_mappings(dev); 1301 if (ret) { 1302 return ret; 1303 } 1304 for (i = 0; i < nvqs; i++) { 1305 if (!virtio_queue_get_num(vdev, i)) { 1306 break; 1307 } 1308 } 1309 dev->routes.num_routes = i; 1310 return fsc->add_adapter_routes(fs, &dev->routes); 1311 } 1312 1313 static void virtio_ccw_release_irqroutes(VirtioCcwDevice *dev, int nvqs) 1314 { 1315 S390FLICState *fs = s390_get_flic(); 1316 S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); 1317 1318 fsc->release_adapter_routes(fs, &dev->routes); 1319 } 1320 1321 static int virtio_ccw_add_irqfd(VirtioCcwDevice *dev, int n) 1322 { 1323 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1324 VirtQueue *vq = virtio_get_queue(vdev, n); 1325 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1326 1327 return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, notifier, NULL, 1328 dev->routes.gsi[n]); 1329 } 1330 1331 static void virtio_ccw_remove_irqfd(VirtioCcwDevice *dev, int n) 1332 { 1333 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1334 VirtQueue *vq = virtio_get_queue(vdev, n); 1335 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1336 int ret; 1337 1338 ret = kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, notifier, 1339 dev->routes.gsi[n]); 1340 assert(ret == 0); 1341 } 1342 1343 static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n, 1344 bool assign, bool with_irqfd) 1345 { 1346 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1347 VirtQueue *vq = virtio_get_queue(vdev, n); 1348 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 1349 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); 1350 1351 if (assign) { 1352 int r = event_notifier_init(notifier, 0); 1353 1354 if (r < 0) { 1355 return r; 1356 } 1357 virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); 1358 if (with_irqfd) { 1359 r = virtio_ccw_add_irqfd(dev, n); 1360 if (r) { 1361 virtio_queue_set_guest_notifier_fd_handler(vq, false, 1362 with_irqfd); 1363 return r; 1364 } 1365 } 1366 /* 1367 * We do not support individual masking for channel devices, so we 1368 * need to manually trigger any guest masking callbacks here. 1369 */ 1370 if (k->guest_notifier_mask) { 1371 k->guest_notifier_mask(vdev, n, false); 1372 } 1373 /* get lost events and re-inject */ 1374 if (k->guest_notifier_pending && 1375 k->guest_notifier_pending(vdev, n)) { 1376 event_notifier_set(notifier); 1377 } 1378 } else { 1379 if (k->guest_notifier_mask) { 1380 k->guest_notifier_mask(vdev, n, true); 1381 } 1382 if (with_irqfd) { 1383 virtio_ccw_remove_irqfd(dev, n); 1384 } 1385 virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); 1386 event_notifier_cleanup(notifier); 1387 } 1388 return 0; 1389 } 1390 1391 static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs, 1392 bool assigned) 1393 { 1394 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1395 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1396 bool with_irqfd = dev->sch->thinint_active && kvm_irqfds_enabled(); 1397 int r, n; 1398 1399 if (with_irqfd && assigned) { 1400 /* irq routes need to be set up before assigning irqfds */ 1401 r = virtio_ccw_setup_irqroutes(dev, nvqs); 1402 if (r < 0) { 1403 goto irqroute_error; 1404 } 1405 } 1406 for (n = 0; n < nvqs; n++) { 1407 if (!virtio_queue_get_num(vdev, n)) { 1408 break; 1409 } 1410 r = virtio_ccw_set_guest_notifier(dev, n, assigned, with_irqfd); 1411 if (r < 0) { 1412 goto assign_error; 1413 } 1414 } 1415 if (with_irqfd && !assigned) { 1416 /* release irq routes after irqfds have been released */ 1417 virtio_ccw_release_irqroutes(dev, nvqs); 1418 } 1419 return 0; 1420 1421 assign_error: 1422 while (--n >= 0) { 1423 virtio_ccw_set_guest_notifier(dev, n, !assigned, false); 1424 } 1425 irqroute_error: 1426 if (with_irqfd && assigned) { 1427 virtio_ccw_release_irqroutes(dev, nvqs); 1428 } 1429 return r; 1430 } 1431 1432 static void virtio_ccw_save_queue(DeviceState *d, int n, QEMUFile *f) 1433 { 1434 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1435 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1436 1437 qemu_put_be16(f, virtio_queue_vector(vdev, n)); 1438 } 1439 1440 static int virtio_ccw_load_queue(DeviceState *d, int n, QEMUFile *f) 1441 { 1442 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1443 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1444 uint16_t vector; 1445 1446 qemu_get_be16s(f, &vector); 1447 virtio_queue_set_vector(vdev, n , vector); 1448 1449 return 0; 1450 } 1451 1452 static void virtio_ccw_save_config(DeviceState *d, QEMUFile *f) 1453 { 1454 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1455 SubchDev *s = dev->sch; 1456 VirtIODevice *vdev = virtio_ccw_get_vdev(s); 1457 1458 subch_device_save(s, f); 1459 if (dev->indicators != NULL) { 1460 qemu_put_be32(f, dev->indicators->len); 1461 qemu_put_be64(f, dev->indicators->addr); 1462 } else { 1463 qemu_put_be32(f, 0); 1464 qemu_put_be64(f, 0UL); 1465 } 1466 if (dev->indicators2 != NULL) { 1467 qemu_put_be32(f, dev->indicators2->len); 1468 qemu_put_be64(f, dev->indicators2->addr); 1469 } else { 1470 qemu_put_be32(f, 0); 1471 qemu_put_be64(f, 0UL); 1472 } 1473 if (dev->summary_indicator != NULL) { 1474 qemu_put_be32(f, dev->summary_indicator->len); 1475 qemu_put_be64(f, dev->summary_indicator->addr); 1476 } else { 1477 qemu_put_be32(f, 0); 1478 qemu_put_be64(f, 0UL); 1479 } 1480 qemu_put_be16(f, vdev->config_vector); 1481 qemu_put_be64(f, dev->routes.adapter.ind_offset); 1482 qemu_put_byte(f, dev->thinint_isc); 1483 qemu_put_be32(f, dev->revision); 1484 } 1485 1486 static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f) 1487 { 1488 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1489 SubchDev *s = dev->sch; 1490 VirtIODevice *vdev = virtio_ccw_get_vdev(s); 1491 int len; 1492 1493 s->driver_data = dev; 1494 subch_device_load(s, f); 1495 len = qemu_get_be32(f); 1496 if (len != 0) { 1497 dev->indicators = get_indicator(qemu_get_be64(f), len); 1498 } else { 1499 qemu_get_be64(f); 1500 dev->indicators = NULL; 1501 } 1502 len = qemu_get_be32(f); 1503 if (len != 0) { 1504 dev->indicators2 = get_indicator(qemu_get_be64(f), len); 1505 } else { 1506 qemu_get_be64(f); 1507 dev->indicators2 = NULL; 1508 } 1509 len = qemu_get_be32(f); 1510 if (len != 0) { 1511 dev->summary_indicator = get_indicator(qemu_get_be64(f), len); 1512 } else { 1513 qemu_get_be64(f); 1514 dev->summary_indicator = NULL; 1515 } 1516 qemu_get_be16s(f, &vdev->config_vector); 1517 dev->routes.adapter.ind_offset = qemu_get_be64(f); 1518 dev->thinint_isc = qemu_get_byte(f); 1519 dev->revision = qemu_get_be32(f); 1520 if (s->thinint_active) { 1521 return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, 1522 dev->thinint_isc, true, false, 1523 &dev->routes.adapter.adapter_id); 1524 } 1525 1526 return 0; 1527 } 1528 1529 /* This is called by virtio-bus just after the device is plugged. */ 1530 static void virtio_ccw_device_plugged(DeviceState *d, Error **errp) 1531 { 1532 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1533 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 1534 SubchDev *sch = dev->sch; 1535 int n = virtio_get_num_queues(vdev); 1536 1537 if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) { 1538 error_setg(errp, "The nubmer of virtqueues %d " 1539 "exceeds ccw limit %d", n, 1540 VIRTIO_CCW_QUEUE_MAX); 1541 return; 1542 } 1543 1544 if (!kvm_eventfds_enabled()) { 1545 dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; 1546 } 1547 1548 sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus); 1549 1550 if (dev->max_rev >= 1) { 1551 virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1); 1552 } 1553 1554 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1555 d->hotplugged, 1); 1556 } 1557 1558 static void virtio_ccw_device_unplugged(DeviceState *d) 1559 { 1560 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 1561 1562 virtio_ccw_stop_ioeventfd(dev); 1563 } 1564 /**************** Virtio-ccw Bus Device Descriptions *******************/ 1565 1566 static Property virtio_ccw_net_properties[] = { 1567 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1568 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1569 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1570 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1571 VIRTIO_CCW_MAX_REV), 1572 DEFINE_PROP_END_OF_LIST(), 1573 }; 1574 1575 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) 1576 { 1577 DeviceClass *dc = DEVICE_CLASS(klass); 1578 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1579 1580 k->realize = virtio_ccw_net_realize; 1581 k->exit = virtio_ccw_exit; 1582 dc->reset = virtio_ccw_reset; 1583 dc->props = virtio_ccw_net_properties; 1584 set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); 1585 } 1586 1587 static const TypeInfo virtio_ccw_net = { 1588 .name = TYPE_VIRTIO_NET_CCW, 1589 .parent = TYPE_VIRTIO_CCW_DEVICE, 1590 .instance_size = sizeof(VirtIONetCcw), 1591 .instance_init = virtio_ccw_net_instance_init, 1592 .class_init = virtio_ccw_net_class_init, 1593 }; 1594 1595 static Property virtio_ccw_blk_properties[] = { 1596 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1597 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1598 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1599 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1600 VIRTIO_CCW_MAX_REV), 1601 DEFINE_PROP_END_OF_LIST(), 1602 }; 1603 1604 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) 1605 { 1606 DeviceClass *dc = DEVICE_CLASS(klass); 1607 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1608 1609 k->realize = virtio_ccw_blk_realize; 1610 k->exit = virtio_ccw_exit; 1611 dc->reset = virtio_ccw_reset; 1612 dc->props = virtio_ccw_blk_properties; 1613 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1614 } 1615 1616 static const TypeInfo virtio_ccw_blk = { 1617 .name = TYPE_VIRTIO_BLK_CCW, 1618 .parent = TYPE_VIRTIO_CCW_DEVICE, 1619 .instance_size = sizeof(VirtIOBlkCcw), 1620 .instance_init = virtio_ccw_blk_instance_init, 1621 .class_init = virtio_ccw_blk_class_init, 1622 }; 1623 1624 static Property virtio_ccw_serial_properties[] = { 1625 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1626 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1627 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1628 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1629 VIRTIO_CCW_MAX_REV), 1630 DEFINE_PROP_END_OF_LIST(), 1631 }; 1632 1633 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) 1634 { 1635 DeviceClass *dc = DEVICE_CLASS(klass); 1636 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1637 1638 k->realize = virtio_ccw_serial_realize; 1639 k->exit = virtio_ccw_exit; 1640 dc->reset = virtio_ccw_reset; 1641 dc->props = virtio_ccw_serial_properties; 1642 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 1643 } 1644 1645 static const TypeInfo virtio_ccw_serial = { 1646 .name = TYPE_VIRTIO_SERIAL_CCW, 1647 .parent = TYPE_VIRTIO_CCW_DEVICE, 1648 .instance_size = sizeof(VirtioSerialCcw), 1649 .instance_init = virtio_ccw_serial_instance_init, 1650 .class_init = virtio_ccw_serial_class_init, 1651 }; 1652 1653 static Property virtio_ccw_balloon_properties[] = { 1654 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1655 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1656 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1657 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1658 VIRTIO_CCW_MAX_REV), 1659 DEFINE_PROP_END_OF_LIST(), 1660 }; 1661 1662 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) 1663 { 1664 DeviceClass *dc = DEVICE_CLASS(klass); 1665 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1666 1667 k->realize = virtio_ccw_balloon_realize; 1668 k->exit = virtio_ccw_exit; 1669 dc->reset = virtio_ccw_reset; 1670 dc->props = virtio_ccw_balloon_properties; 1671 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1672 } 1673 1674 static const TypeInfo virtio_ccw_balloon = { 1675 .name = TYPE_VIRTIO_BALLOON_CCW, 1676 .parent = TYPE_VIRTIO_CCW_DEVICE, 1677 .instance_size = sizeof(VirtIOBalloonCcw), 1678 .instance_init = virtio_ccw_balloon_instance_init, 1679 .class_init = virtio_ccw_balloon_class_init, 1680 }; 1681 1682 static Property virtio_ccw_scsi_properties[] = { 1683 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1684 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1685 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1686 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1687 VIRTIO_CCW_MAX_REV), 1688 DEFINE_PROP_END_OF_LIST(), 1689 }; 1690 1691 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data) 1692 { 1693 DeviceClass *dc = DEVICE_CLASS(klass); 1694 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1695 1696 k->realize = virtio_ccw_scsi_realize; 1697 k->exit = virtio_ccw_exit; 1698 dc->reset = virtio_ccw_reset; 1699 dc->props = virtio_ccw_scsi_properties; 1700 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1701 } 1702 1703 static const TypeInfo virtio_ccw_scsi = { 1704 .name = TYPE_VIRTIO_SCSI_CCW, 1705 .parent = TYPE_VIRTIO_CCW_DEVICE, 1706 .instance_size = sizeof(VirtIOSCSICcw), 1707 .instance_init = virtio_ccw_scsi_instance_init, 1708 .class_init = virtio_ccw_scsi_class_init, 1709 }; 1710 1711 #ifdef CONFIG_VHOST_SCSI 1712 static Property vhost_ccw_scsi_properties[] = { 1713 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1714 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1715 VIRTIO_CCW_MAX_REV), 1716 DEFINE_PROP_END_OF_LIST(), 1717 }; 1718 1719 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data) 1720 { 1721 DeviceClass *dc = DEVICE_CLASS(klass); 1722 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1723 1724 k->realize = vhost_ccw_scsi_realize; 1725 k->exit = virtio_ccw_exit; 1726 dc->reset = virtio_ccw_reset; 1727 dc->props = vhost_ccw_scsi_properties; 1728 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1729 } 1730 1731 static const TypeInfo vhost_ccw_scsi = { 1732 .name = TYPE_VHOST_SCSI_CCW, 1733 .parent = TYPE_VIRTIO_CCW_DEVICE, 1734 .instance_size = sizeof(VHostSCSICcw), 1735 .instance_init = vhost_ccw_scsi_instance_init, 1736 .class_init = vhost_ccw_scsi_class_init, 1737 }; 1738 #endif 1739 1740 static void virtio_ccw_rng_instance_init(Object *obj) 1741 { 1742 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); 1743 1744 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1745 TYPE_VIRTIO_RNG); 1746 object_property_add_alias(obj, "rng", OBJECT(&dev->vdev), 1747 "rng", &error_abort); 1748 } 1749 1750 static Property virtio_ccw_rng_properties[] = { 1751 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1752 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1753 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1754 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1755 VIRTIO_CCW_MAX_REV), 1756 DEFINE_PROP_END_OF_LIST(), 1757 }; 1758 1759 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) 1760 { 1761 DeviceClass *dc = DEVICE_CLASS(klass); 1762 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1763 1764 k->realize = virtio_ccw_rng_realize; 1765 k->exit = virtio_ccw_exit; 1766 dc->reset = virtio_ccw_reset; 1767 dc->props = virtio_ccw_rng_properties; 1768 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1769 } 1770 1771 static const TypeInfo virtio_ccw_rng = { 1772 .name = TYPE_VIRTIO_RNG_CCW, 1773 .parent = TYPE_VIRTIO_CCW_DEVICE, 1774 .instance_size = sizeof(VirtIORNGCcw), 1775 .instance_init = virtio_ccw_rng_instance_init, 1776 .class_init = virtio_ccw_rng_class_init, 1777 }; 1778 1779 static void virtio_ccw_busdev_realize(DeviceState *dev, Error **errp) 1780 { 1781 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1782 1783 virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev); 1784 virtio_ccw_device_realize(_dev, errp); 1785 } 1786 1787 static int virtio_ccw_busdev_exit(DeviceState *dev) 1788 { 1789 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1790 VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 1791 1792 return _info->exit(_dev); 1793 } 1794 1795 static void virtio_ccw_busdev_unplug(HotplugHandler *hotplug_dev, 1796 DeviceState *dev, Error **errp) 1797 { 1798 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1799 SubchDev *sch = _dev->sch; 1800 1801 virtio_ccw_stop_ioeventfd(_dev); 1802 1803 /* 1804 * We should arrive here only for device_del, since we don't support 1805 * direct hot(un)plug of channels, but only through virtio. 1806 */ 1807 assert(sch != NULL); 1808 /* Subchannel is now disabled and no longer valid. */ 1809 sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA | 1810 PMCW_FLAGS_MASK_DNV); 1811 1812 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0); 1813 1814 object_unparent(OBJECT(dev)); 1815 } 1816 1817 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) 1818 { 1819 DeviceClass *dc = DEVICE_CLASS(klass); 1820 1821 dc->realize = virtio_ccw_busdev_realize; 1822 dc->exit = virtio_ccw_busdev_exit; 1823 dc->bus_type = TYPE_VIRTUAL_CSS_BUS; 1824 } 1825 1826 static const TypeInfo virtio_ccw_device_info = { 1827 .name = TYPE_VIRTIO_CCW_DEVICE, 1828 .parent = TYPE_DEVICE, 1829 .instance_size = sizeof(VirtioCcwDevice), 1830 .class_init = virtio_ccw_device_class_init, 1831 .class_size = sizeof(VirtIOCCWDeviceClass), 1832 .abstract = true, 1833 }; 1834 1835 /***************** Virtual-css Bus Bridge Device ********************/ 1836 /* Only required to have the virtio bus as child in the system bus */ 1837 1838 static int virtual_css_bridge_init(SysBusDevice *dev) 1839 { 1840 /* nothing */ 1841 return 0; 1842 } 1843 1844 static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) 1845 { 1846 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); 1847 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); 1848 DeviceClass *dc = DEVICE_CLASS(klass); 1849 1850 k->init = virtual_css_bridge_init; 1851 hc->unplug = virtio_ccw_busdev_unplug; 1852 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 1853 } 1854 1855 static const TypeInfo virtual_css_bridge_info = { 1856 .name = "virtual-css-bridge", 1857 .parent = TYPE_SYS_BUS_DEVICE, 1858 .instance_size = sizeof(SysBusDevice), 1859 .class_init = virtual_css_bridge_class_init, 1860 .interfaces = (InterfaceInfo[]) { 1861 { TYPE_HOTPLUG_HANDLER }, 1862 { } 1863 } 1864 }; 1865 1866 /* virtio-ccw-bus */ 1867 1868 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 1869 VirtioCcwDevice *dev) 1870 { 1871 DeviceState *qdev = DEVICE(dev); 1872 char virtio_bus_name[] = "virtio-bus"; 1873 1874 qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS, 1875 qdev, virtio_bus_name); 1876 } 1877 1878 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data) 1879 { 1880 VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); 1881 BusClass *bus_class = BUS_CLASS(klass); 1882 1883 bus_class->max_dev = 1; 1884 k->notify = virtio_ccw_notify; 1885 k->vmstate_change = virtio_ccw_vmstate_change; 1886 k->query_guest_notifiers = virtio_ccw_query_guest_notifiers; 1887 k->set_host_notifier = virtio_ccw_set_host_notifier; 1888 k->set_guest_notifiers = virtio_ccw_set_guest_notifiers; 1889 k->save_queue = virtio_ccw_save_queue; 1890 k->load_queue = virtio_ccw_load_queue; 1891 k->save_config = virtio_ccw_save_config; 1892 k->load_config = virtio_ccw_load_config; 1893 k->device_plugged = virtio_ccw_device_plugged; 1894 k->device_unplugged = virtio_ccw_device_unplugged; 1895 } 1896 1897 static const TypeInfo virtio_ccw_bus_info = { 1898 .name = TYPE_VIRTIO_CCW_BUS, 1899 .parent = TYPE_VIRTIO_BUS, 1900 .instance_size = sizeof(VirtioCcwBusState), 1901 .class_init = virtio_ccw_bus_class_init, 1902 }; 1903 1904 #ifdef CONFIG_VIRTFS 1905 static Property virtio_ccw_9p_properties[] = { 1906 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1907 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1908 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1909 DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev, 1910 VIRTIO_CCW_MAX_REV), 1911 DEFINE_PROP_END_OF_LIST(), 1912 }; 1913 1914 static void virtio_ccw_9p_realize(VirtioCcwDevice *ccw_dev, Error **errp) 1915 { 1916 V9fsCCWState *dev = VIRTIO_9P_CCW(ccw_dev); 1917 DeviceState *vdev = DEVICE(&dev->vdev); 1918 Error *err = NULL; 1919 1920 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 1921 object_property_set_bool(OBJECT(vdev), true, "realized", &err); 1922 if (err) { 1923 error_propagate(errp, err); 1924 } 1925 } 1926 1927 static void virtio_ccw_9p_class_init(ObjectClass *klass, void *data) 1928 { 1929 DeviceClass *dc = DEVICE_CLASS(klass); 1930 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1931 1932 k->exit = virtio_ccw_exit; 1933 k->realize = virtio_ccw_9p_realize; 1934 dc->reset = virtio_ccw_reset; 1935 dc->props = virtio_ccw_9p_properties; 1936 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1937 } 1938 1939 static void virtio_ccw_9p_instance_init(Object *obj) 1940 { 1941 V9fsCCWState *dev = VIRTIO_9P_CCW(obj); 1942 1943 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 1944 TYPE_VIRTIO_9P); 1945 } 1946 1947 static const TypeInfo virtio_ccw_9p_info = { 1948 .name = TYPE_VIRTIO_9P_CCW, 1949 .parent = TYPE_VIRTIO_CCW_DEVICE, 1950 .instance_size = sizeof(V9fsCCWState), 1951 .instance_init = virtio_ccw_9p_instance_init, 1952 .class_init = virtio_ccw_9p_class_init, 1953 }; 1954 #endif 1955 1956 static void virtio_ccw_register(void) 1957 { 1958 type_register_static(&virtio_ccw_bus_info); 1959 type_register_static(&virtual_css_bus_info); 1960 type_register_static(&virtio_ccw_device_info); 1961 type_register_static(&virtio_ccw_serial); 1962 type_register_static(&virtio_ccw_blk); 1963 type_register_static(&virtio_ccw_net); 1964 type_register_static(&virtio_ccw_balloon); 1965 type_register_static(&virtio_ccw_scsi); 1966 #ifdef CONFIG_VHOST_SCSI 1967 type_register_static(&vhost_ccw_scsi); 1968 #endif 1969 type_register_static(&virtio_ccw_rng); 1970 type_register_static(&virtual_css_bridge_info); 1971 #ifdef CONFIG_VIRTFS 1972 type_register_static(&virtio_ccw_9p_info); 1973 #endif 1974 } 1975 1976 type_init(virtio_ccw_register) 1977