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