1 /* 2 * virtio ccw target implementation 3 * 4 * Copyright 2012 IBM Corp. 5 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or (at 8 * your option) any later version. See the COPYING file in the top-level 9 * directory. 10 */ 11 12 #include "hw/hw.h" 13 #include "block/block.h" 14 #include "sysemu/blockdev.h" 15 #include "sysemu/sysemu.h" 16 #include "net/net.h" 17 #include "monitor/monitor.h" 18 #include "hw/virtio/virtio.h" 19 #include "hw/virtio/virtio-serial.h" 20 #include "hw/virtio/virtio-net.h" 21 #include "hw/sysbus.h" 22 #include "qemu/bitops.h" 23 #include "hw/virtio/virtio-bus.h" 24 25 #include "ioinst.h" 26 #include "css.h" 27 #include "virtio-ccw.h" 28 #include "trace.h" 29 30 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 31 VirtioCcwDevice *dev); 32 33 static int virtual_css_bus_reset(BusState *qbus) 34 { 35 /* This should actually be modelled via the generic css */ 36 css_reset(); 37 38 /* we dont traverse ourself, return 0 */ 39 return 0; 40 } 41 42 43 static void virtual_css_bus_class_init(ObjectClass *klass, void *data) 44 { 45 BusClass *k = BUS_CLASS(klass); 46 47 k->reset = virtual_css_bus_reset; 48 } 49 50 static const TypeInfo virtual_css_bus_info = { 51 .name = TYPE_VIRTUAL_CSS_BUS, 52 .parent = TYPE_BUS, 53 .instance_size = sizeof(VirtualCssBus), 54 .class_init = virtual_css_bus_class_init, 55 }; 56 57 VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch) 58 { 59 VirtIODevice *vdev = NULL; 60 VirtioCcwDevice *dev = sch->driver_data; 61 62 if (dev) { 63 vdev = virtio_bus_get_device(&dev->bus); 64 } 65 return vdev; 66 } 67 68 static int virtio_ccw_set_guest2host_notifier(VirtioCcwDevice *dev, int n, 69 bool assign, bool set_handler) 70 { 71 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 72 VirtQueue *vq = virtio_get_queue(vdev, n); 73 EventNotifier *notifier = virtio_queue_get_host_notifier(vq); 74 int r = 0; 75 SubchDev *sch = dev->sch; 76 uint32_t sch_id = (css_build_subchannel_id(sch) << 16) | sch->schid; 77 78 if (assign) { 79 r = event_notifier_init(notifier, 1); 80 if (r < 0) { 81 error_report("%s: unable to init event notifier: %d", __func__, r); 82 return r; 83 } 84 virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler); 85 r = s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); 86 if (r < 0) { 87 error_report("%s: unable to assign ioeventfd: %d", __func__, r); 88 virtio_queue_set_host_notifier_fd_handler(vq, false, false); 89 event_notifier_cleanup(notifier); 90 return r; 91 } 92 } else { 93 virtio_queue_set_host_notifier_fd_handler(vq, false, false); 94 s390_assign_subch_ioeventfd(notifier, sch_id, n, assign); 95 event_notifier_cleanup(notifier); 96 } 97 return r; 98 } 99 100 static void virtio_ccw_start_ioeventfd(VirtioCcwDevice *dev) 101 { 102 VirtIODevice *vdev; 103 int n, r; 104 105 if (!(dev->flags & VIRTIO_CCW_FLAG_USE_IOEVENTFD) || 106 dev->ioeventfd_disabled || 107 dev->ioeventfd_started) { 108 return; 109 } 110 vdev = virtio_bus_get_device(&dev->bus); 111 for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { 112 if (!virtio_queue_get_num(vdev, n)) { 113 continue; 114 } 115 r = virtio_ccw_set_guest2host_notifier(dev, n, true, true); 116 if (r < 0) { 117 goto assign_error; 118 } 119 } 120 dev->ioeventfd_started = true; 121 return; 122 123 assign_error: 124 while (--n >= 0) { 125 if (!virtio_queue_get_num(vdev, n)) { 126 continue; 127 } 128 r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); 129 assert(r >= 0); 130 } 131 dev->ioeventfd_started = false; 132 /* Disable ioeventfd for this device. */ 133 dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD; 134 error_report("%s: failed. Fallback to userspace (slower).", __func__); 135 } 136 137 static void virtio_ccw_stop_ioeventfd(VirtioCcwDevice *dev) 138 { 139 VirtIODevice *vdev; 140 int n, r; 141 142 if (!dev->ioeventfd_started) { 143 return; 144 } 145 vdev = virtio_bus_get_device(&dev->bus); 146 for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { 147 if (!virtio_queue_get_num(vdev, n)) { 148 continue; 149 } 150 r = virtio_ccw_set_guest2host_notifier(dev, n, false, false); 151 assert(r >= 0); 152 } 153 dev->ioeventfd_started = false; 154 } 155 156 VirtualCssBus *virtual_css_bus_init(void) 157 { 158 VirtualCssBus *cbus; 159 BusState *bus; 160 DeviceState *dev; 161 162 /* Create bridge device */ 163 dev = qdev_create(NULL, "virtual-css-bridge"); 164 qdev_init_nofail(dev); 165 166 /* Create bus on bridge device */ 167 bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css"); 168 cbus = VIRTUAL_CSS_BUS(bus); 169 170 /* Enable hotplugging */ 171 bus->allow_hotplug = 1; 172 173 return cbus; 174 } 175 176 /* Communication blocks used by several channel commands. */ 177 typedef struct VqInfoBlock { 178 uint64_t queue; 179 uint32_t align; 180 uint16_t index; 181 uint16_t num; 182 } QEMU_PACKED VqInfoBlock; 183 184 typedef struct VqConfigBlock { 185 uint16_t index; 186 uint16_t num_max; 187 } QEMU_PACKED VqConfigBlock; 188 189 typedef struct VirtioFeatDesc { 190 uint32_t features; 191 uint8_t index; 192 } QEMU_PACKED VirtioFeatDesc; 193 194 /* Specify where the virtqueues for the subchannel are in guest memory. */ 195 static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align, 196 uint16_t index, uint16_t num) 197 { 198 VirtIODevice *vdev = virtio_ccw_get_vdev(sch); 199 200 if (index > VIRTIO_PCI_QUEUE_MAX) { 201 return -EINVAL; 202 } 203 204 /* Current code in virtio.c relies on 4K alignment. */ 205 if (addr && (align != 4096)) { 206 return -EINVAL; 207 } 208 209 if (!vdev) { 210 return -EINVAL; 211 } 212 213 virtio_queue_set_addr(vdev, index, addr); 214 if (!addr) { 215 virtio_queue_set_vector(vdev, index, 0); 216 } else { 217 /* Fail if we don't have a big enough queue. */ 218 /* TODO: Add interface to handle vring.num changing */ 219 if (virtio_queue_get_num(vdev, index) > num) { 220 return -EINVAL; 221 } 222 virtio_queue_set_vector(vdev, index, index); 223 } 224 /* tell notify handler in case of config change */ 225 vdev->config_vector = VIRTIO_PCI_QUEUE_MAX; 226 return 0; 227 } 228 229 static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) 230 { 231 int ret; 232 VqInfoBlock info; 233 uint8_t status; 234 VirtioFeatDesc features; 235 void *config; 236 hwaddr indicators; 237 VqConfigBlock vq_config; 238 VirtioCcwDevice *dev = sch->driver_data; 239 VirtIODevice *vdev = virtio_ccw_get_vdev(sch); 240 bool check_len; 241 int len; 242 hwaddr hw_len; 243 244 if (!dev) { 245 return -EINVAL; 246 } 247 248 trace_virtio_ccw_interpret_ccw(sch->cssid, sch->ssid, sch->schid, 249 ccw.cmd_code); 250 check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC)); 251 252 /* Look at the command. */ 253 switch (ccw.cmd_code) { 254 case CCW_CMD_SET_VQ: 255 if (check_len) { 256 if (ccw.count != sizeof(info)) { 257 ret = -EINVAL; 258 break; 259 } 260 } else if (ccw.count < sizeof(info)) { 261 /* Can't execute command. */ 262 ret = -EINVAL; 263 break; 264 } 265 if (!ccw.cda) { 266 ret = -EFAULT; 267 } else { 268 info.queue = ldq_phys(ccw.cda); 269 info.align = ldl_phys(ccw.cda + sizeof(info.queue)); 270 info.index = lduw_phys(ccw.cda + sizeof(info.queue) 271 + sizeof(info.align)); 272 info.num = lduw_phys(ccw.cda + sizeof(info.queue) 273 + sizeof(info.align) 274 + sizeof(info.index)); 275 ret = virtio_ccw_set_vqs(sch, info.queue, info.align, info.index, 276 info.num); 277 sch->curr_status.scsw.count = 0; 278 } 279 break; 280 case CCW_CMD_VDEV_RESET: 281 virtio_ccw_stop_ioeventfd(dev); 282 virtio_reset(vdev); 283 ret = 0; 284 break; 285 case CCW_CMD_READ_FEAT: 286 if (check_len) { 287 if (ccw.count != sizeof(features)) { 288 ret = -EINVAL; 289 break; 290 } 291 } else if (ccw.count < sizeof(features)) { 292 /* Can't execute command. */ 293 ret = -EINVAL; 294 break; 295 } 296 if (!ccw.cda) { 297 ret = -EFAULT; 298 } else { 299 features.index = ldub_phys(ccw.cda + sizeof(features.features)); 300 if (features.index < ARRAY_SIZE(dev->host_features)) { 301 features.features = dev->host_features[features.index]; 302 } else { 303 /* Return zeroes if the guest supports more feature bits. */ 304 features.features = 0; 305 } 306 stl_le_phys(ccw.cda, features.features); 307 sch->curr_status.scsw.count = ccw.count - sizeof(features); 308 ret = 0; 309 } 310 break; 311 case CCW_CMD_WRITE_FEAT: 312 if (check_len) { 313 if (ccw.count != sizeof(features)) { 314 ret = -EINVAL; 315 break; 316 } 317 } else if (ccw.count < sizeof(features)) { 318 /* Can't execute command. */ 319 ret = -EINVAL; 320 break; 321 } 322 if (!ccw.cda) { 323 ret = -EFAULT; 324 } else { 325 features.index = ldub_phys(ccw.cda + sizeof(features.features)); 326 features.features = ldl_le_phys(ccw.cda); 327 if (features.index < ARRAY_SIZE(dev->host_features)) { 328 virtio_bus_set_vdev_features(&dev->bus, features.features); 329 vdev->guest_features = features.features; 330 } else { 331 /* 332 * If the guest supports more feature bits, assert that it 333 * passes us zeroes for those we don't support. 334 */ 335 if (features.features) { 336 fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n", 337 features.index, features.features); 338 /* XXX: do a unit check here? */ 339 } 340 } 341 sch->curr_status.scsw.count = ccw.count - sizeof(features); 342 ret = 0; 343 } 344 break; 345 case CCW_CMD_READ_CONF: 346 if (check_len) { 347 if (ccw.count > vdev->config_len) { 348 ret = -EINVAL; 349 break; 350 } 351 } 352 len = MIN(ccw.count, vdev->config_len); 353 if (!ccw.cda) { 354 ret = -EFAULT; 355 } else { 356 virtio_bus_get_vdev_config(&dev->bus, vdev->config); 357 /* XXX config space endianness */ 358 cpu_physical_memory_write(ccw.cda, vdev->config, len); 359 sch->curr_status.scsw.count = ccw.count - len; 360 ret = 0; 361 } 362 break; 363 case CCW_CMD_WRITE_CONF: 364 if (check_len) { 365 if (ccw.count > vdev->config_len) { 366 ret = -EINVAL; 367 break; 368 } 369 } 370 len = MIN(ccw.count, vdev->config_len); 371 hw_len = len; 372 if (!ccw.cda) { 373 ret = -EFAULT; 374 } else { 375 config = cpu_physical_memory_map(ccw.cda, &hw_len, 0); 376 if (!config) { 377 ret = -EFAULT; 378 } else { 379 len = hw_len; 380 /* XXX config space endianness */ 381 memcpy(vdev->config, config, len); 382 cpu_physical_memory_unmap(config, hw_len, 0, hw_len); 383 virtio_bus_set_vdev_config(&dev->bus, vdev->config); 384 sch->curr_status.scsw.count = ccw.count - len; 385 ret = 0; 386 } 387 } 388 break; 389 case CCW_CMD_WRITE_STATUS: 390 if (check_len) { 391 if (ccw.count != sizeof(status)) { 392 ret = -EINVAL; 393 break; 394 } 395 } else if (ccw.count < sizeof(status)) { 396 /* Can't execute command. */ 397 ret = -EINVAL; 398 break; 399 } 400 if (!ccw.cda) { 401 ret = -EFAULT; 402 } else { 403 status = ldub_phys(ccw.cda); 404 if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) { 405 virtio_ccw_stop_ioeventfd(dev); 406 } 407 virtio_set_status(vdev, status); 408 if (vdev->status == 0) { 409 virtio_reset(vdev); 410 } 411 if (status & VIRTIO_CONFIG_S_DRIVER_OK) { 412 virtio_ccw_start_ioeventfd(dev); 413 } 414 sch->curr_status.scsw.count = ccw.count - sizeof(status); 415 ret = 0; 416 } 417 break; 418 case CCW_CMD_SET_IND: 419 if (check_len) { 420 if (ccw.count != sizeof(indicators)) { 421 ret = -EINVAL; 422 break; 423 } 424 } else if (ccw.count < sizeof(indicators)) { 425 /* Can't execute command. */ 426 ret = -EINVAL; 427 break; 428 } 429 if (!ccw.cda) { 430 ret = -EFAULT; 431 } else { 432 indicators = ldq_phys(ccw.cda); 433 dev->indicators = indicators; 434 sch->curr_status.scsw.count = ccw.count - sizeof(indicators); 435 ret = 0; 436 } 437 break; 438 case CCW_CMD_SET_CONF_IND: 439 if (check_len) { 440 if (ccw.count != sizeof(indicators)) { 441 ret = -EINVAL; 442 break; 443 } 444 } else if (ccw.count < sizeof(indicators)) { 445 /* Can't execute command. */ 446 ret = -EINVAL; 447 break; 448 } 449 if (!ccw.cda) { 450 ret = -EFAULT; 451 } else { 452 indicators = ldq_phys(ccw.cda); 453 dev->indicators2 = indicators; 454 sch->curr_status.scsw.count = ccw.count - sizeof(indicators); 455 ret = 0; 456 } 457 break; 458 case CCW_CMD_READ_VQ_CONF: 459 if (check_len) { 460 if (ccw.count != sizeof(vq_config)) { 461 ret = -EINVAL; 462 break; 463 } 464 } else if (ccw.count < sizeof(vq_config)) { 465 /* Can't execute command. */ 466 ret = -EINVAL; 467 break; 468 } 469 if (!ccw.cda) { 470 ret = -EFAULT; 471 } else { 472 vq_config.index = lduw_phys(ccw.cda); 473 vq_config.num_max = virtio_queue_get_num(vdev, 474 vq_config.index); 475 stw_phys(ccw.cda + sizeof(vq_config.index), vq_config.num_max); 476 sch->curr_status.scsw.count = ccw.count - sizeof(vq_config); 477 ret = 0; 478 } 479 break; 480 default: 481 ret = -ENOSYS; 482 break; 483 } 484 return ret; 485 } 486 487 static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev) 488 { 489 unsigned int cssid = 0; 490 unsigned int ssid = 0; 491 unsigned int schid; 492 unsigned int devno; 493 bool have_devno = false; 494 bool found = false; 495 SubchDev *sch; 496 int ret; 497 int num; 498 DeviceState *parent = DEVICE(dev); 499 500 sch = g_malloc0(sizeof(SubchDev)); 501 502 sch->driver_data = dev; 503 dev->sch = sch; 504 505 dev->indicators = 0; 506 507 /* Initialize subchannel structure. */ 508 sch->channel_prog = 0x0; 509 sch->last_cmd_valid = false; 510 sch->orb = NULL; 511 /* 512 * Use a device number if provided. Otherwise, fall back to subchannel 513 * number. 514 */ 515 if (dev->bus_id) { 516 num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno); 517 if (num == 3) { 518 if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) { 519 ret = -EINVAL; 520 error_report("Invalid cssid or ssid: cssid %x, ssid %x", 521 cssid, ssid); 522 goto out_err; 523 } 524 /* Enforce use of virtual cssid. */ 525 if (cssid != VIRTUAL_CSSID) { 526 ret = -EINVAL; 527 error_report("cssid %x not valid for virtio devices", cssid); 528 goto out_err; 529 } 530 if (css_devno_used(cssid, ssid, devno)) { 531 ret = -EEXIST; 532 error_report("Device %x.%x.%04x already exists", cssid, ssid, 533 devno); 534 goto out_err; 535 } 536 sch->cssid = cssid; 537 sch->ssid = ssid; 538 sch->devno = devno; 539 have_devno = true; 540 } else { 541 ret = -EINVAL; 542 error_report("Malformed devno parameter '%s'", dev->bus_id); 543 goto out_err; 544 } 545 } 546 547 /* Find the next free id. */ 548 if (have_devno) { 549 for (schid = 0; schid <= MAX_SCHID; schid++) { 550 if (!css_find_subch(1, cssid, ssid, schid)) { 551 sch->schid = schid; 552 css_subch_assign(cssid, ssid, schid, devno, sch); 553 found = true; 554 break; 555 } 556 } 557 if (!found) { 558 ret = -ENODEV; 559 error_report("No free subchannel found for %x.%x.%04x", cssid, ssid, 560 devno); 561 goto out_err; 562 } 563 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 564 "user-configured"); 565 } else { 566 cssid = VIRTUAL_CSSID; 567 for (ssid = 0; ssid <= MAX_SSID; ssid++) { 568 for (schid = 0; schid <= MAX_SCHID; schid++) { 569 if (!css_find_subch(1, cssid, ssid, schid)) { 570 sch->cssid = cssid; 571 sch->ssid = ssid; 572 sch->schid = schid; 573 devno = schid; 574 /* 575 * If the devno is already taken, look further in this 576 * subchannel set. 577 */ 578 while (css_devno_used(cssid, ssid, devno)) { 579 if (devno == MAX_SCHID) { 580 devno = 0; 581 } else if (devno == schid - 1) { 582 ret = -ENODEV; 583 error_report("No free devno found"); 584 goto out_err; 585 } else { 586 devno++; 587 } 588 } 589 sch->devno = devno; 590 css_subch_assign(cssid, ssid, schid, devno, sch); 591 found = true; 592 break; 593 } 594 } 595 if (found) { 596 break; 597 } 598 } 599 if (!found) { 600 ret = -ENODEV; 601 error_report("Virtual channel subsystem is full!"); 602 goto out_err; 603 } 604 trace_virtio_ccw_new_device(cssid, ssid, schid, devno, 605 "auto-configured"); 606 } 607 608 /* Build initial schib. */ 609 css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE); 610 611 sch->ccw_cb = virtio_ccw_cb; 612 613 /* Build senseid data. */ 614 memset(&sch->id, 0, sizeof(SenseId)); 615 sch->id.reserved = 0xff; 616 sch->id.cu_type = VIRTIO_CCW_CU_TYPE; 617 sch->id.cu_model = vdev->device_id; 618 619 /* Only the first 32 feature bits are used. */ 620 dev->host_features[0] = virtio_bus_get_vdev_features(&dev->bus, 621 dev->host_features[0]); 622 623 dev->host_features[0] |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; 624 dev->host_features[0] |= 0x1 << VIRTIO_F_BAD_FEATURE; 625 626 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 627 parent->hotplugged, 1); 628 return 0; 629 630 out_err: 631 dev->sch = NULL; 632 g_free(sch); 633 return ret; 634 } 635 636 static int virtio_ccw_exit(VirtioCcwDevice *dev) 637 { 638 SubchDev *sch = dev->sch; 639 640 if (sch) { 641 css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); 642 g_free(sch); 643 } 644 dev->indicators = 0; 645 return 0; 646 } 647 648 static int virtio_ccw_net_init(VirtioCcwDevice *ccw_dev) 649 { 650 DeviceState *qdev = DEVICE(ccw_dev); 651 VirtIONetCcw *dev = VIRTIO_NET_CCW(ccw_dev); 652 DeviceState *vdev = DEVICE(&dev->vdev); 653 654 virtio_net_set_config_size(&dev->vdev, ccw_dev->host_features[0]); 655 virtio_net_set_netclient_name(&dev->vdev, qdev->id, 656 object_get_typename(OBJECT(qdev))); 657 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 658 if (qdev_init(vdev) < 0) { 659 return -1; 660 } 661 662 return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); 663 } 664 665 static void virtio_ccw_net_instance_init(Object *obj) 666 { 667 VirtIONetCcw *dev = VIRTIO_NET_CCW(obj); 668 object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_NET); 669 object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); 670 } 671 672 static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev) 673 { 674 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev); 675 DeviceState *vdev = DEVICE(&dev->vdev); 676 virtio_blk_set_conf(vdev, &(dev->blk)); 677 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 678 if (qdev_init(vdev) < 0) { 679 return -1; 680 } 681 682 return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); 683 } 684 685 static void virtio_ccw_blk_instance_init(Object *obj) 686 { 687 VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj); 688 object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BLK); 689 object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); 690 } 691 692 static int virtio_ccw_serial_init(VirtioCcwDevice *ccw_dev) 693 { 694 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(ccw_dev); 695 DeviceState *vdev = DEVICE(&dev->vdev); 696 DeviceState *proxy = DEVICE(ccw_dev); 697 char *bus_name; 698 699 /* 700 * For command line compatibility, this sets the virtio-serial-device bus 701 * name as before. 702 */ 703 if (proxy->id) { 704 bus_name = g_strdup_printf("%s.0", proxy->id); 705 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 706 g_free(bus_name); 707 } 708 709 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 710 if (qdev_init(vdev) < 0) { 711 return -1; 712 } 713 714 return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); 715 } 716 717 718 static void virtio_ccw_serial_instance_init(Object *obj) 719 { 720 VirtioSerialCcw *dev = VIRTIO_SERIAL_CCW(obj); 721 object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SERIAL); 722 object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); 723 } 724 725 static int virtio_ccw_balloon_init(VirtioCcwDevice *ccw_dev) 726 { 727 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(ccw_dev); 728 DeviceState *vdev = DEVICE(&dev->vdev); 729 730 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 731 if (qdev_init(vdev) < 0) { 732 return -1; 733 } 734 735 return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); 736 } 737 738 static void balloon_ccw_stats_get_all(Object *obj, struct Visitor *v, 739 void *opaque, const char *name, 740 Error **errp) 741 { 742 VirtIOBalloonCcw *dev = opaque; 743 object_property_get(OBJECT(&dev->vdev), v, "guest-stats", errp); 744 } 745 746 static void balloon_ccw_stats_get_poll_interval(Object *obj, struct Visitor *v, 747 void *opaque, const char *name, 748 Error **errp) 749 { 750 VirtIOBalloonCcw *dev = opaque; 751 object_property_get(OBJECT(&dev->vdev), v, "guest-stats-polling-interval", 752 errp); 753 } 754 755 static void balloon_ccw_stats_set_poll_interval(Object *obj, struct Visitor *v, 756 void *opaque, const char *name, 757 Error **errp) 758 { 759 VirtIOBalloonCcw *dev = opaque; 760 object_property_set(OBJECT(&dev->vdev), v, "guest-stats-polling-interval", 761 errp); 762 } 763 764 static void virtio_ccw_balloon_instance_init(Object *obj) 765 { 766 VirtIOBalloonCcw *dev = VIRTIO_BALLOON_CCW(obj); 767 object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_BALLOON); 768 object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); 769 770 object_property_add(obj, "guest-stats", "guest statistics", 771 balloon_ccw_stats_get_all, NULL, NULL, dev, NULL); 772 773 object_property_add(obj, "guest-stats-polling-interval", "int", 774 balloon_ccw_stats_get_poll_interval, 775 balloon_ccw_stats_set_poll_interval, 776 NULL, dev, NULL); 777 } 778 779 static int virtio_ccw_scsi_init(VirtioCcwDevice *ccw_dev) 780 { 781 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(ccw_dev); 782 DeviceState *vdev = DEVICE(&dev->vdev); 783 DeviceState *qdev = DEVICE(ccw_dev); 784 char *bus_name; 785 786 /* 787 * For command line compatibility, this sets the virtio-scsi-device bus 788 * name as before. 789 */ 790 if (qdev->id) { 791 bus_name = g_strdup_printf("%s.0", qdev->id); 792 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 793 g_free(bus_name); 794 } 795 796 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 797 if (qdev_init(vdev) < 0) { 798 return -1; 799 } 800 801 return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); 802 } 803 804 static void virtio_ccw_scsi_instance_init(Object *obj) 805 { 806 VirtIOSCSICcw *dev = VIRTIO_SCSI_CCW(obj); 807 object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_SCSI); 808 object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); 809 } 810 811 #ifdef CONFIG_VHOST_SCSI 812 static int vhost_ccw_scsi_init(VirtioCcwDevice *ccw_dev) 813 { 814 VHostSCSICcw *dev = VHOST_SCSI_CCW(ccw_dev); 815 DeviceState *vdev = DEVICE(&dev->vdev); 816 817 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 818 if (qdev_init(vdev) < 0) { 819 return -1; 820 } 821 822 return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); 823 } 824 825 static void vhost_ccw_scsi_instance_init(Object *obj) 826 { 827 VHostSCSICcw *dev = VHOST_SCSI_CCW(obj); 828 object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VHOST_SCSI); 829 object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); 830 } 831 #endif 832 833 static int virtio_ccw_rng_init(VirtioCcwDevice *ccw_dev) 834 { 835 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(ccw_dev); 836 DeviceState *vdev = DEVICE(&dev->vdev); 837 838 qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus)); 839 if (qdev_init(vdev) < 0) { 840 return -1; 841 } 842 843 object_property_set_link(OBJECT(dev), 844 OBJECT(dev->vdev.conf.rng), "rng", 845 NULL); 846 847 return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev)); 848 } 849 850 /* DeviceState to VirtioCcwDevice. Note: used on datapath, 851 * be careful and test performance if you change this. 852 */ 853 static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d) 854 { 855 return container_of(d, VirtioCcwDevice, parent_obj); 856 } 857 858 static void virtio_ccw_notify(DeviceState *d, uint16_t vector) 859 { 860 VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d); 861 SubchDev *sch = dev->sch; 862 uint64_t indicators; 863 864 if (vector >= 128) { 865 return; 866 } 867 868 if (vector < VIRTIO_PCI_QUEUE_MAX) { 869 if (!dev->indicators) { 870 return; 871 } 872 indicators = ldq_phys(dev->indicators); 873 indicators |= 1ULL << vector; 874 stq_phys(dev->indicators, indicators); 875 } else { 876 if (!dev->indicators2) { 877 return; 878 } 879 vector = 0; 880 indicators = ldq_phys(dev->indicators2); 881 indicators |= 1ULL << vector; 882 stq_phys(dev->indicators2, indicators); 883 } 884 885 css_conditional_io_interrupt(sch); 886 887 } 888 889 static unsigned virtio_ccw_get_features(DeviceState *d) 890 { 891 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 892 893 /* Only the first 32 feature bits are used. */ 894 return dev->host_features[0]; 895 } 896 897 static void virtio_ccw_reset(DeviceState *d) 898 { 899 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 900 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 901 902 virtio_ccw_stop_ioeventfd(dev); 903 virtio_reset(vdev); 904 css_reset_sch(dev->sch); 905 dev->indicators = 0; 906 dev->indicators2 = 0; 907 } 908 909 static void virtio_ccw_vmstate_change(DeviceState *d, bool running) 910 { 911 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 912 913 if (running) { 914 virtio_ccw_start_ioeventfd(dev); 915 } else { 916 virtio_ccw_stop_ioeventfd(dev); 917 } 918 } 919 920 static bool virtio_ccw_query_guest_notifiers(DeviceState *d) 921 { 922 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 923 924 return !!(dev->sch->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA); 925 } 926 927 static int virtio_ccw_set_host_notifier(DeviceState *d, int n, bool assign) 928 { 929 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 930 931 /* Stop using the generic ioeventfd, we are doing eventfd handling 932 * ourselves below */ 933 dev->ioeventfd_disabled = assign; 934 if (assign) { 935 virtio_ccw_stop_ioeventfd(dev); 936 } 937 return virtio_ccw_set_guest2host_notifier(dev, n, assign, false); 938 } 939 940 static int virtio_ccw_set_guest_notifier(VirtioCcwDevice *dev, int n, 941 bool assign, bool with_irqfd) 942 { 943 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 944 VirtQueue *vq = virtio_get_queue(vdev, n); 945 EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); 946 VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); 947 948 if (assign) { 949 int r = event_notifier_init(notifier, 0); 950 951 if (r < 0) { 952 return r; 953 } 954 virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); 955 /* We do not support irqfd for classic I/O interrupts, because the 956 * classic interrupts are intermixed with the subchannel status, that 957 * is queried with test subchannel. We want to use vhost, though. 958 * Lets make sure to have vhost running and wire up the irq fd to 959 * land in qemu (and only the irq fd) in this code. 960 */ 961 if (k->guest_notifier_mask) { 962 k->guest_notifier_mask(vdev, n, false); 963 } 964 /* get lost events and re-inject */ 965 if (k->guest_notifier_pending && 966 k->guest_notifier_pending(vdev, n)) { 967 event_notifier_set(notifier); 968 } 969 } else { 970 if (k->guest_notifier_mask) { 971 k->guest_notifier_mask(vdev, n, true); 972 } 973 virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); 974 event_notifier_cleanup(notifier); 975 } 976 return 0; 977 } 978 979 static int virtio_ccw_set_guest_notifiers(DeviceState *d, int nvqs, 980 bool assigned) 981 { 982 VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); 983 VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); 984 int r, n; 985 986 for (n = 0; n < nvqs; n++) { 987 if (!virtio_queue_get_num(vdev, n)) { 988 break; 989 } 990 /* false -> true, as soon as irqfd works */ 991 r = virtio_ccw_set_guest_notifier(dev, n, assigned, false); 992 if (r < 0) { 993 goto assign_error; 994 } 995 } 996 return 0; 997 998 assign_error: 999 while (--n >= 0) { 1000 virtio_ccw_set_guest_notifier(dev, n, !assigned, false); 1001 } 1002 return r; 1003 } 1004 1005 /**************** Virtio-ccw Bus Device Descriptions *******************/ 1006 1007 static Property virtio_ccw_net_properties[] = { 1008 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1009 DEFINE_VIRTIO_NET_FEATURES(VirtioCcwDevice, host_features[0]), 1010 DEFINE_VIRTIO_NET_PROPERTIES(VirtIONetCcw, vdev.net_conf), 1011 DEFINE_NIC_PROPERTIES(VirtIONetCcw, vdev.nic_conf), 1012 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1013 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1014 DEFINE_PROP_END_OF_LIST(), 1015 }; 1016 1017 static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) 1018 { 1019 DeviceClass *dc = DEVICE_CLASS(klass); 1020 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1021 1022 k->init = virtio_ccw_net_init; 1023 k->exit = virtio_ccw_exit; 1024 dc->reset = virtio_ccw_reset; 1025 dc->props = virtio_ccw_net_properties; 1026 } 1027 1028 static const TypeInfo virtio_ccw_net = { 1029 .name = TYPE_VIRTIO_NET_CCW, 1030 .parent = TYPE_VIRTIO_CCW_DEVICE, 1031 .instance_size = sizeof(VirtIONetCcw), 1032 .instance_init = virtio_ccw_net_instance_init, 1033 .class_init = virtio_ccw_net_class_init, 1034 }; 1035 1036 static Property virtio_ccw_blk_properties[] = { 1037 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1038 DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]), 1039 DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkCcw, blk), 1040 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1041 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1042 #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE 1043 DEFINE_PROP_BIT("x-data-plane", VirtIOBlkCcw, blk.data_plane, 0, false), 1044 #endif 1045 DEFINE_PROP_END_OF_LIST(), 1046 }; 1047 1048 static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) 1049 { 1050 DeviceClass *dc = DEVICE_CLASS(klass); 1051 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1052 1053 k->init = virtio_ccw_blk_init; 1054 k->exit = virtio_ccw_exit; 1055 dc->reset = virtio_ccw_reset; 1056 dc->props = virtio_ccw_blk_properties; 1057 } 1058 1059 static const TypeInfo virtio_ccw_blk = { 1060 .name = TYPE_VIRTIO_BLK_CCW, 1061 .parent = TYPE_VIRTIO_CCW_DEVICE, 1062 .instance_size = sizeof(VirtIOBlkCcw), 1063 .instance_init = virtio_ccw_blk_instance_init, 1064 .class_init = virtio_ccw_blk_class_init, 1065 }; 1066 1067 static Property virtio_ccw_serial_properties[] = { 1068 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1069 DEFINE_VIRTIO_SERIAL_PROPERTIES(VirtioSerialCcw, vdev.serial), 1070 DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]), 1071 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1072 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1073 DEFINE_PROP_END_OF_LIST(), 1074 }; 1075 1076 static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) 1077 { 1078 DeviceClass *dc = DEVICE_CLASS(klass); 1079 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1080 1081 k->init = virtio_ccw_serial_init; 1082 k->exit = virtio_ccw_exit; 1083 dc->reset = virtio_ccw_reset; 1084 dc->props = virtio_ccw_serial_properties; 1085 } 1086 1087 static const TypeInfo virtio_ccw_serial = { 1088 .name = TYPE_VIRTIO_SERIAL_CCW, 1089 .parent = TYPE_VIRTIO_CCW_DEVICE, 1090 .instance_size = sizeof(VirtioSerialCcw), 1091 .instance_init = virtio_ccw_serial_instance_init, 1092 .class_init = virtio_ccw_serial_class_init, 1093 }; 1094 1095 static Property virtio_ccw_balloon_properties[] = { 1096 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1097 DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]), 1098 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1099 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1100 DEFINE_PROP_END_OF_LIST(), 1101 }; 1102 1103 static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) 1104 { 1105 DeviceClass *dc = DEVICE_CLASS(klass); 1106 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1107 1108 k->init = virtio_ccw_balloon_init; 1109 k->exit = virtio_ccw_exit; 1110 dc->reset = virtio_ccw_reset; 1111 dc->props = virtio_ccw_balloon_properties; 1112 } 1113 1114 static const TypeInfo virtio_ccw_balloon = { 1115 .name = TYPE_VIRTIO_BALLOON_CCW, 1116 .parent = TYPE_VIRTIO_CCW_DEVICE, 1117 .instance_size = sizeof(VirtIOBalloonCcw), 1118 .instance_init = virtio_ccw_balloon_instance_init, 1119 .class_init = virtio_ccw_balloon_class_init, 1120 }; 1121 1122 static Property virtio_ccw_scsi_properties[] = { 1123 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1124 DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf), 1125 DEFINE_VIRTIO_SCSI_FEATURES(VirtioCcwDevice, host_features[0]), 1126 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1127 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1128 DEFINE_PROP_END_OF_LIST(), 1129 }; 1130 1131 static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data) 1132 { 1133 DeviceClass *dc = DEVICE_CLASS(klass); 1134 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1135 1136 k->init = virtio_ccw_scsi_init; 1137 k->exit = virtio_ccw_exit; 1138 dc->reset = virtio_ccw_reset; 1139 dc->props = virtio_ccw_scsi_properties; 1140 } 1141 1142 static const TypeInfo virtio_ccw_scsi = { 1143 .name = TYPE_VIRTIO_SCSI_CCW, 1144 .parent = TYPE_VIRTIO_CCW_DEVICE, 1145 .instance_size = sizeof(VirtIOSCSICcw), 1146 .instance_init = virtio_ccw_scsi_instance_init, 1147 .class_init = virtio_ccw_scsi_class_init, 1148 }; 1149 1150 #ifdef CONFIG_VHOST_SCSI 1151 static Property vhost_ccw_scsi_properties[] = { 1152 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1153 DEFINE_VHOST_SCSI_PROPERTIES(VirtIOSCSICcw, vdev.parent_obj.conf), 1154 DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]), 1155 DEFINE_PROP_END_OF_LIST(), 1156 }; 1157 1158 static void vhost_ccw_scsi_class_init(ObjectClass *klass, void *data) 1159 { 1160 DeviceClass *dc = DEVICE_CLASS(klass); 1161 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1162 1163 k->init = vhost_ccw_scsi_init; 1164 k->exit = virtio_ccw_exit; 1165 dc->reset = virtio_ccw_reset; 1166 dc->props = vhost_ccw_scsi_properties; 1167 } 1168 1169 static const TypeInfo vhost_ccw_scsi = { 1170 .name = TYPE_VHOST_SCSI_CCW, 1171 .parent = TYPE_VIRTIO_CCW_DEVICE, 1172 .instance_size = sizeof(VirtIOSCSICcw), 1173 .instance_init = vhost_ccw_scsi_instance_init, 1174 .class_init = vhost_ccw_scsi_class_init, 1175 }; 1176 #endif 1177 1178 static void virtio_ccw_rng_instance_init(Object *obj) 1179 { 1180 VirtIORNGCcw *dev = VIRTIO_RNG_CCW(obj); 1181 object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_RNG); 1182 object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); 1183 object_property_add_link(obj, "rng", TYPE_RNG_BACKEND, 1184 (Object **)&dev->vdev.conf.rng, NULL); 1185 } 1186 1187 static Property virtio_ccw_rng_properties[] = { 1188 DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id), 1189 DEFINE_VIRTIO_COMMON_FEATURES(VirtioCcwDevice, host_features[0]), 1190 DEFINE_VIRTIO_RNG_PROPERTIES(VirtIORNGCcw, vdev.conf), 1191 DEFINE_PROP_BIT("ioeventfd", VirtioCcwDevice, flags, 1192 VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT, true), 1193 DEFINE_PROP_END_OF_LIST(), 1194 }; 1195 1196 static void virtio_ccw_rng_class_init(ObjectClass *klass, void *data) 1197 { 1198 DeviceClass *dc = DEVICE_CLASS(klass); 1199 VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); 1200 1201 k->init = virtio_ccw_rng_init; 1202 k->exit = virtio_ccw_exit; 1203 dc->reset = virtio_ccw_reset; 1204 dc->props = virtio_ccw_rng_properties; 1205 } 1206 1207 static const TypeInfo virtio_ccw_rng = { 1208 .name = TYPE_VIRTIO_RNG_CCW, 1209 .parent = TYPE_VIRTIO_CCW_DEVICE, 1210 .instance_size = sizeof(VirtIORNGCcw), 1211 .instance_init = virtio_ccw_rng_instance_init, 1212 .class_init = virtio_ccw_rng_class_init, 1213 }; 1214 1215 static int virtio_ccw_busdev_init(DeviceState *dev) 1216 { 1217 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1218 VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 1219 1220 virtio_ccw_bus_new(&_dev->bus, sizeof(_dev->bus), _dev); 1221 1222 return _info->init(_dev); 1223 } 1224 1225 static int virtio_ccw_busdev_exit(DeviceState *dev) 1226 { 1227 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1228 VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); 1229 1230 return _info->exit(_dev); 1231 } 1232 1233 static int virtio_ccw_busdev_unplug(DeviceState *dev) 1234 { 1235 VirtioCcwDevice *_dev = (VirtioCcwDevice *)dev; 1236 SubchDev *sch = _dev->sch; 1237 1238 virtio_ccw_stop_ioeventfd(_dev); 1239 1240 /* 1241 * We should arrive here only for device_del, since we don't support 1242 * direct hot(un)plug of channels, but only through virtio. 1243 */ 1244 assert(sch != NULL); 1245 /* Subchannel is now disabled and no longer valid. */ 1246 sch->curr_status.pmcw.flags &= ~(PMCW_FLAGS_MASK_ENA | 1247 PMCW_FLAGS_MASK_DNV); 1248 1249 css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, 1, 0); 1250 1251 object_unparent(OBJECT(dev)); 1252 return 0; 1253 } 1254 1255 static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) 1256 { 1257 DeviceClass *dc = DEVICE_CLASS(klass); 1258 1259 dc->init = virtio_ccw_busdev_init; 1260 dc->exit = virtio_ccw_busdev_exit; 1261 dc->unplug = virtio_ccw_busdev_unplug; 1262 dc->bus_type = TYPE_VIRTUAL_CSS_BUS; 1263 1264 } 1265 1266 static const TypeInfo virtio_ccw_device_info = { 1267 .name = TYPE_VIRTIO_CCW_DEVICE, 1268 .parent = TYPE_DEVICE, 1269 .instance_size = sizeof(VirtioCcwDevice), 1270 .class_init = virtio_ccw_device_class_init, 1271 .class_size = sizeof(VirtIOCCWDeviceClass), 1272 .abstract = true, 1273 }; 1274 1275 /***************** Virtual-css Bus Bridge Device ********************/ 1276 /* Only required to have the virtio bus as child in the system bus */ 1277 1278 static int virtual_css_bridge_init(SysBusDevice *dev) 1279 { 1280 /* nothing */ 1281 return 0; 1282 } 1283 1284 static void virtual_css_bridge_class_init(ObjectClass *klass, void *data) 1285 { 1286 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); 1287 1288 k->init = virtual_css_bridge_init; 1289 } 1290 1291 static const TypeInfo virtual_css_bridge_info = { 1292 .name = "virtual-css-bridge", 1293 .parent = TYPE_SYS_BUS_DEVICE, 1294 .instance_size = sizeof(SysBusDevice), 1295 .class_init = virtual_css_bridge_class_init, 1296 }; 1297 1298 /* virtio-ccw-bus */ 1299 1300 static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, 1301 VirtioCcwDevice *dev) 1302 { 1303 DeviceState *qdev = DEVICE(dev); 1304 BusState *qbus; 1305 char virtio_bus_name[] = "virtio-bus"; 1306 1307 qbus_create_inplace(bus, bus_size, TYPE_VIRTIO_CCW_BUS, 1308 qdev, virtio_bus_name); 1309 qbus = BUS(bus); 1310 qbus->allow_hotplug = 1; 1311 } 1312 1313 static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data) 1314 { 1315 VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); 1316 BusClass *bus_class = BUS_CLASS(klass); 1317 1318 bus_class->max_dev = 1; 1319 k->notify = virtio_ccw_notify; 1320 k->get_features = virtio_ccw_get_features; 1321 k->vmstate_change = virtio_ccw_vmstate_change; 1322 k->query_guest_notifiers = virtio_ccw_query_guest_notifiers; 1323 k->set_host_notifier = virtio_ccw_set_host_notifier; 1324 k->set_guest_notifiers = virtio_ccw_set_guest_notifiers; 1325 } 1326 1327 static const TypeInfo virtio_ccw_bus_info = { 1328 .name = TYPE_VIRTIO_CCW_BUS, 1329 .parent = TYPE_VIRTIO_BUS, 1330 .instance_size = sizeof(VirtioCcwBusState), 1331 .class_init = virtio_ccw_bus_class_init, 1332 }; 1333 1334 static void virtio_ccw_register(void) 1335 { 1336 type_register_static(&virtio_ccw_bus_info); 1337 type_register_static(&virtual_css_bus_info); 1338 type_register_static(&virtio_ccw_device_info); 1339 type_register_static(&virtio_ccw_serial); 1340 type_register_static(&virtio_ccw_blk); 1341 type_register_static(&virtio_ccw_net); 1342 type_register_static(&virtio_ccw_balloon); 1343 type_register_static(&virtio_ccw_scsi); 1344 #ifdef CONFIG_VHOST_SCSI 1345 type_register_static(&vhost_ccw_scsi); 1346 #endif 1347 type_register_static(&virtio_ccw_rng); 1348 type_register_static(&virtual_css_bridge_info); 1349 } 1350 1351 type_init(virtio_ccw_register) 1352