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