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