1 /* 2 * USB Mass Storage Device emulation 3 * 4 * Copyright (c) 2006 CodeSourcery. 5 * Written by Paul Brook 6 * 7 * This code is licensed under the LGPL. 8 */ 9 10 #include "qemu/osdep.h" 11 #include "qapi/error.h" 12 #include "qemu/error-report.h" 13 #include "qemu/module.h" 14 #include "qemu/option.h" 15 #include "qemu/config-file.h" 16 #include "hw/usb.h" 17 #include "hw/usb/msd.h" 18 #include "desc.h" 19 #include "hw/qdev-properties.h" 20 #include "hw/scsi/scsi.h" 21 #include "migration/vmstate.h" 22 #include "sysemu/sysemu.h" 23 #include "sysemu/block-backend.h" 24 #include "qapi/visitor.h" 25 #include "qemu/cutils.h" 26 #include "qom/object.h" 27 #include "trace.h" 28 29 /* USB requests. */ 30 #define MassStorageReset 0xff 31 #define GetMaxLun 0xfe 32 33 struct usb_msd_cbw { 34 uint32_t sig; 35 uint32_t tag; 36 uint32_t data_len; 37 uint8_t flags; 38 uint8_t lun; 39 uint8_t cmd_len; 40 uint8_t cmd[16]; 41 }; 42 43 enum { 44 STR_MANUFACTURER = 1, 45 STR_PRODUCT, 46 STR_SERIALNUMBER, 47 STR_CONFIG_FULL, 48 STR_CONFIG_HIGH, 49 STR_CONFIG_SUPER, 50 }; 51 52 static const USBDescStrings desc_strings = { 53 [STR_MANUFACTURER] = "QEMU", 54 [STR_PRODUCT] = "QEMU USB HARDDRIVE", 55 [STR_SERIALNUMBER] = "1", 56 [STR_CONFIG_FULL] = "Full speed config (usb 1.1)", 57 [STR_CONFIG_HIGH] = "High speed config (usb 2.0)", 58 [STR_CONFIG_SUPER] = "Super speed config (usb 3.0)", 59 }; 60 61 static const USBDescIface desc_iface_full = { 62 .bInterfaceNumber = 0, 63 .bNumEndpoints = 2, 64 .bInterfaceClass = USB_CLASS_MASS_STORAGE, 65 .bInterfaceSubClass = 0x06, /* SCSI */ 66 .bInterfaceProtocol = 0x50, /* Bulk */ 67 .eps = (USBDescEndpoint[]) { 68 { 69 .bEndpointAddress = USB_DIR_IN | 0x01, 70 .bmAttributes = USB_ENDPOINT_XFER_BULK, 71 .wMaxPacketSize = 64, 72 },{ 73 .bEndpointAddress = USB_DIR_OUT | 0x02, 74 .bmAttributes = USB_ENDPOINT_XFER_BULK, 75 .wMaxPacketSize = 64, 76 }, 77 } 78 }; 79 80 static const USBDescDevice desc_device_full = { 81 .bcdUSB = 0x0200, 82 .bMaxPacketSize0 = 8, 83 .bNumConfigurations = 1, 84 .confs = (USBDescConfig[]) { 85 { 86 .bNumInterfaces = 1, 87 .bConfigurationValue = 1, 88 .iConfiguration = STR_CONFIG_FULL, 89 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, 90 .nif = 1, 91 .ifs = &desc_iface_full, 92 }, 93 }, 94 }; 95 96 static const USBDescIface desc_iface_high = { 97 .bInterfaceNumber = 0, 98 .bNumEndpoints = 2, 99 .bInterfaceClass = USB_CLASS_MASS_STORAGE, 100 .bInterfaceSubClass = 0x06, /* SCSI */ 101 .bInterfaceProtocol = 0x50, /* Bulk */ 102 .eps = (USBDescEndpoint[]) { 103 { 104 .bEndpointAddress = USB_DIR_IN | 0x01, 105 .bmAttributes = USB_ENDPOINT_XFER_BULK, 106 .wMaxPacketSize = 512, 107 },{ 108 .bEndpointAddress = USB_DIR_OUT | 0x02, 109 .bmAttributes = USB_ENDPOINT_XFER_BULK, 110 .wMaxPacketSize = 512, 111 }, 112 } 113 }; 114 115 static const USBDescDevice desc_device_high = { 116 .bcdUSB = 0x0200, 117 .bMaxPacketSize0 = 64, 118 .bNumConfigurations = 1, 119 .confs = (USBDescConfig[]) { 120 { 121 .bNumInterfaces = 1, 122 .bConfigurationValue = 1, 123 .iConfiguration = STR_CONFIG_HIGH, 124 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, 125 .nif = 1, 126 .ifs = &desc_iface_high, 127 }, 128 }, 129 }; 130 131 static const USBDescIface desc_iface_super = { 132 .bInterfaceNumber = 0, 133 .bNumEndpoints = 2, 134 .bInterfaceClass = USB_CLASS_MASS_STORAGE, 135 .bInterfaceSubClass = 0x06, /* SCSI */ 136 .bInterfaceProtocol = 0x50, /* Bulk */ 137 .eps = (USBDescEndpoint[]) { 138 { 139 .bEndpointAddress = USB_DIR_IN | 0x01, 140 .bmAttributes = USB_ENDPOINT_XFER_BULK, 141 .wMaxPacketSize = 1024, 142 .bMaxBurst = 15, 143 },{ 144 .bEndpointAddress = USB_DIR_OUT | 0x02, 145 .bmAttributes = USB_ENDPOINT_XFER_BULK, 146 .wMaxPacketSize = 1024, 147 .bMaxBurst = 15, 148 }, 149 } 150 }; 151 152 static const USBDescDevice desc_device_super = { 153 .bcdUSB = 0x0300, 154 .bMaxPacketSize0 = 9, 155 .bNumConfigurations = 1, 156 .confs = (USBDescConfig[]) { 157 { 158 .bNumInterfaces = 1, 159 .bConfigurationValue = 1, 160 .iConfiguration = STR_CONFIG_SUPER, 161 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, 162 .nif = 1, 163 .ifs = &desc_iface_super, 164 }, 165 }, 166 }; 167 168 static const USBDesc desc = { 169 .id = { 170 .idVendor = 0x46f4, /* CRC16() of "QEMU" */ 171 .idProduct = 0x0001, 172 .bcdDevice = 0, 173 .iManufacturer = STR_MANUFACTURER, 174 .iProduct = STR_PRODUCT, 175 .iSerialNumber = STR_SERIALNUMBER, 176 }, 177 .full = &desc_device_full, 178 .high = &desc_device_high, 179 .super = &desc_device_super, 180 .str = desc_strings, 181 }; 182 183 static void usb_msd_copy_data(MSDState *s, USBPacket *p) 184 { 185 uint32_t len; 186 len = p->iov.size - p->actual_length; 187 if (len > s->scsi_len) 188 len = s->scsi_len; 189 usb_packet_copy(p, scsi_req_get_buf(s->req) + s->scsi_off, len); 190 s->scsi_len -= len; 191 s->scsi_off += len; 192 if (len > s->data_len) { 193 len = s->data_len; 194 } 195 s->data_len -= len; 196 if (s->scsi_len == 0 || s->data_len == 0) { 197 scsi_req_continue(s->req); 198 } 199 } 200 201 static void usb_msd_send_status(MSDState *s, USBPacket *p) 202 { 203 int len; 204 205 trace_usb_msd_send_status(s->csw.status, le32_to_cpu(s->csw.tag), 206 p->iov.size); 207 208 assert(s->csw.sig == cpu_to_le32(0x53425355)); 209 len = MIN(sizeof(s->csw), p->iov.size); 210 usb_packet_copy(p, &s->csw, len); 211 memset(&s->csw, 0, sizeof(s->csw)); 212 } 213 214 static void usb_msd_packet_complete(MSDState *s) 215 { 216 USBPacket *p = s->packet; 217 218 /* Set s->packet to NULL before calling usb_packet_complete 219 because another request may be issued before 220 usb_packet_complete returns. */ 221 trace_usb_msd_packet_complete(); 222 s->packet = NULL; 223 usb_packet_complete(&s->dev, p); 224 } 225 226 void usb_msd_transfer_data(SCSIRequest *req, uint32_t len) 227 { 228 MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); 229 USBPacket *p = s->packet; 230 231 assert((s->mode == USB_MSDM_DATAOUT) == (req->cmd.mode == SCSI_XFER_TO_DEV)); 232 s->scsi_len = len; 233 s->scsi_off = 0; 234 if (p) { 235 usb_msd_copy_data(s, p); 236 p = s->packet; 237 if (p && p->actual_length == p->iov.size) { 238 p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */ 239 usb_msd_packet_complete(s); 240 } 241 } 242 } 243 244 void usb_msd_command_complete(SCSIRequest *req, size_t resid) 245 { 246 MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); 247 USBPacket *p = s->packet; 248 249 trace_usb_msd_cmd_complete(req->status, req->tag); 250 251 s->csw.sig = cpu_to_le32(0x53425355); 252 s->csw.tag = cpu_to_le32(req->tag); 253 s->csw.residue = cpu_to_le32(s->data_len); 254 s->csw.status = req->status != 0; 255 256 if (s->packet) { 257 if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) { 258 /* A deferred packet with no write data remaining must be 259 the status read packet. */ 260 usb_msd_send_status(s, p); 261 s->mode = USB_MSDM_CBW; 262 } else if (s->mode == USB_MSDM_CSW) { 263 usb_msd_send_status(s, p); 264 s->mode = USB_MSDM_CBW; 265 } else { 266 if (s->data_len) { 267 int len = (p->iov.size - p->actual_length); 268 usb_packet_skip(p, len); 269 if (len > s->data_len) { 270 len = s->data_len; 271 } 272 s->data_len -= len; 273 } 274 if (s->data_len == 0) { 275 s->mode = USB_MSDM_CSW; 276 } 277 } 278 p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */ 279 usb_msd_packet_complete(s); 280 } else if (s->data_len == 0) { 281 s->mode = USB_MSDM_CSW; 282 } 283 scsi_req_unref(req); 284 s->req = NULL; 285 } 286 287 void usb_msd_request_cancelled(SCSIRequest *req) 288 { 289 MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); 290 291 trace_usb_msd_cmd_cancel(req->tag); 292 293 if (req == s->req) { 294 s->csw.sig = cpu_to_le32(0x53425355); 295 s->csw.tag = cpu_to_le32(req->tag); 296 s->csw.status = 1; /* error */ 297 298 scsi_req_unref(s->req); 299 s->req = NULL; 300 s->scsi_len = 0; 301 } 302 } 303 304 void usb_msd_handle_reset(USBDevice *dev) 305 { 306 MSDState *s = (MSDState *)dev; 307 308 trace_usb_msd_reset(); 309 if (s->req) { 310 scsi_req_cancel(s->req); 311 } 312 assert(s->req == NULL); 313 314 if (s->packet) { 315 s->packet->status = USB_RET_STALL; 316 usb_msd_packet_complete(s); 317 } 318 319 s->mode = USB_MSDM_CBW; 320 } 321 322 static void usb_msd_handle_control(USBDevice *dev, USBPacket *p, 323 int request, int value, int index, int length, uint8_t *data) 324 { 325 MSDState *s = (MSDState *)dev; 326 SCSIDevice *scsi_dev; 327 int ret, maxlun; 328 329 ret = usb_desc_handle_control(dev, p, request, value, index, length, data); 330 if (ret >= 0) { 331 return; 332 } 333 334 switch (request) { 335 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: 336 break; 337 /* Class specific requests. */ 338 case ClassInterfaceOutRequest | MassStorageReset: 339 /* Reset state ready for the next CBW. */ 340 s->mode = USB_MSDM_CBW; 341 break; 342 case ClassInterfaceRequest | GetMaxLun: 343 maxlun = 0; 344 for (;;) { 345 scsi_dev = scsi_device_find(&s->bus, 0, 0, maxlun+1); 346 if (scsi_dev == NULL) { 347 break; 348 } 349 if (scsi_dev->lun != maxlun+1) { 350 break; 351 } 352 maxlun++; 353 } 354 trace_usb_msd_maxlun(maxlun); 355 data[0] = maxlun; 356 p->actual_length = 1; 357 break; 358 default: 359 p->status = USB_RET_STALL; 360 break; 361 } 362 } 363 364 static void usb_msd_cancel_io(USBDevice *dev, USBPacket *p) 365 { 366 MSDState *s = USB_STORAGE_DEV(dev); 367 368 assert(s->packet == p); 369 s->packet = NULL; 370 371 if (s->req) { 372 scsi_req_cancel(s->req); 373 } 374 } 375 376 static void usb_msd_handle_data(USBDevice *dev, USBPacket *p) 377 { 378 MSDState *s = (MSDState *)dev; 379 uint32_t tag; 380 struct usb_msd_cbw cbw; 381 uint8_t devep = p->ep->nr; 382 SCSIDevice *scsi_dev; 383 uint32_t len; 384 385 switch (p->pid) { 386 case USB_TOKEN_OUT: 387 if (devep != 2) 388 goto fail; 389 390 switch (s->mode) { 391 case USB_MSDM_CBW: 392 if (p->iov.size != 31) { 393 error_report("usb-msd: Bad CBW size"); 394 goto fail; 395 } 396 usb_packet_copy(p, &cbw, 31); 397 if (le32_to_cpu(cbw.sig) != 0x43425355) { 398 error_report("usb-msd: Bad signature %08x", 399 le32_to_cpu(cbw.sig)); 400 goto fail; 401 } 402 scsi_dev = scsi_device_find(&s->bus, 0, 0, cbw.lun); 403 if (scsi_dev == NULL) { 404 error_report("usb-msd: Bad LUN %d", cbw.lun); 405 goto fail; 406 } 407 tag = le32_to_cpu(cbw.tag); 408 s->data_len = le32_to_cpu(cbw.data_len); 409 if (s->data_len == 0) { 410 s->mode = USB_MSDM_CSW; 411 } else if (cbw.flags & 0x80) { 412 s->mode = USB_MSDM_DATAIN; 413 } else { 414 s->mode = USB_MSDM_DATAOUT; 415 } 416 trace_usb_msd_cmd_submit(cbw.lun, tag, cbw.flags, 417 cbw.cmd_len, s->data_len); 418 assert(le32_to_cpu(s->csw.residue) == 0); 419 s->scsi_len = 0; 420 s->req = scsi_req_new(scsi_dev, tag, cbw.lun, cbw.cmd, NULL); 421 if (s->commandlog) { 422 scsi_req_print(s->req); 423 } 424 len = scsi_req_enqueue(s->req); 425 if (len) { 426 scsi_req_continue(s->req); 427 } 428 break; 429 430 case USB_MSDM_DATAOUT: 431 trace_usb_msd_data_out(p->iov.size, s->data_len); 432 if (p->iov.size > s->data_len) { 433 goto fail; 434 } 435 436 if (s->scsi_len) { 437 usb_msd_copy_data(s, p); 438 } 439 if (le32_to_cpu(s->csw.residue)) { 440 int len = p->iov.size - p->actual_length; 441 if (len) { 442 usb_packet_skip(p, len); 443 if (len > s->data_len) { 444 len = s->data_len; 445 } 446 s->data_len -= len; 447 if (s->data_len == 0) { 448 s->mode = USB_MSDM_CSW; 449 } 450 } 451 } 452 if (p->actual_length < p->iov.size) { 453 trace_usb_msd_packet_async(); 454 s->packet = p; 455 p->status = USB_RET_ASYNC; 456 } 457 break; 458 459 default: 460 goto fail; 461 } 462 break; 463 464 case USB_TOKEN_IN: 465 if (devep != 1) 466 goto fail; 467 468 switch (s->mode) { 469 case USB_MSDM_DATAOUT: 470 if (s->data_len != 0 || p->iov.size < 13) { 471 goto fail; 472 } 473 /* Waiting for SCSI write to complete. */ 474 trace_usb_msd_packet_async(); 475 s->packet = p; 476 p->status = USB_RET_ASYNC; 477 break; 478 479 case USB_MSDM_CSW: 480 if (p->iov.size < 13) { 481 goto fail; 482 } 483 484 if (s->req) { 485 /* still in flight */ 486 trace_usb_msd_packet_async(); 487 s->packet = p; 488 p->status = USB_RET_ASYNC; 489 } else { 490 usb_msd_send_status(s, p); 491 s->mode = USB_MSDM_CBW; 492 } 493 break; 494 495 case USB_MSDM_DATAIN: 496 trace_usb_msd_data_in(p->iov.size, s->data_len, s->scsi_len); 497 if (s->scsi_len) { 498 usb_msd_copy_data(s, p); 499 } 500 if (le32_to_cpu(s->csw.residue)) { 501 int len = p->iov.size - p->actual_length; 502 if (len) { 503 usb_packet_skip(p, len); 504 if (len > s->data_len) { 505 len = s->data_len; 506 } 507 s->data_len -= len; 508 if (s->data_len == 0) { 509 s->mode = USB_MSDM_CSW; 510 } 511 } 512 } 513 if (p->actual_length < p->iov.size && s->mode == USB_MSDM_DATAIN) { 514 trace_usb_msd_packet_async(); 515 s->packet = p; 516 p->status = USB_RET_ASYNC; 517 } 518 break; 519 520 default: 521 goto fail; 522 } 523 break; 524 525 default: 526 fail: 527 p->status = USB_RET_STALL; 528 break; 529 } 530 } 531 532 void *usb_msd_load_request(QEMUFile *f, SCSIRequest *req) 533 { 534 MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); 535 536 /* nothing to load, just store req in our state struct */ 537 assert(s->req == NULL); 538 scsi_req_ref(req); 539 s->req = req; 540 return NULL; 541 } 542 543 static const struct SCSIBusInfo usb_msd_scsi_info_storage = { 544 .tcq = false, 545 .max_target = 0, 546 .max_lun = 0, 547 548 .transfer_data = usb_msd_transfer_data, 549 .complete = usb_msd_command_complete, 550 .cancel = usb_msd_request_cancelled, 551 .load_request = usb_msd_load_request, 552 }; 553 554 static const struct SCSIBusInfo usb_msd_scsi_info_bot = { 555 .tcq = false, 556 .max_target = 0, 557 .max_lun = 15, 558 559 .transfer_data = usb_msd_transfer_data, 560 .complete = usb_msd_command_complete, 561 .cancel = usb_msd_request_cancelled, 562 .load_request = usb_msd_load_request, 563 }; 564 565 static void usb_msd_storage_realize(USBDevice *dev, Error **errp) 566 { 567 MSDState *s = USB_STORAGE_DEV(dev); 568 BlockBackend *blk = s->conf.blk; 569 SCSIDevice *scsi_dev; 570 571 if (!blk) { 572 error_setg(errp, "drive property not set"); 573 return; 574 } 575 576 if (!blkconf_blocksizes(&s->conf, errp)) { 577 return; 578 } 579 580 if (!blkconf_apply_backend_options(&s->conf, !blk_supports_write_perm(blk), 581 true, errp)) { 582 return; 583 } 584 585 /* 586 * Hack alert: this pretends to be a block device, but it's really 587 * a SCSI bus that can serve only a single device, which it 588 * creates automatically. But first it needs to detach from its 589 * blockdev, or else scsi_bus_legacy_add_drive() dies when it 590 * attaches again. We also need to take another reference so that 591 * blk_detach_dev() doesn't free blk while we still need it. 592 * 593 * The hack is probably a bad idea. 594 */ 595 blk_ref(blk); 596 blk_detach_dev(blk, DEVICE(s)); 597 s->conf.blk = NULL; 598 599 usb_desc_create_serial(dev); 600 usb_desc_init(dev); 601 scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev), 602 &usb_msd_scsi_info_storage, NULL); 603 scsi_dev = scsi_bus_legacy_add_drive(&s->bus, blk, 0, !!s->removable, 604 s->conf.bootindex, s->conf.share_rw, 605 s->conf.rerror, s->conf.werror, 606 dev->serial, 607 errp); 608 blk_unref(blk); 609 if (!scsi_dev) { 610 return; 611 } 612 usb_msd_handle_reset(dev); 613 s->scsi_dev = scsi_dev; 614 } 615 616 static void usb_msd_bot_realize(USBDevice *dev, Error **errp) 617 { 618 MSDState *s = USB_STORAGE_DEV(dev); 619 DeviceState *d = DEVICE(dev); 620 621 usb_desc_create_serial(dev); 622 usb_desc_init(dev); 623 if (d->hotplugged) { 624 s->dev.auto_attach = 0; 625 } 626 627 scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev), 628 &usb_msd_scsi_info_bot, NULL); 629 usb_msd_handle_reset(dev); 630 } 631 632 static const VMStateDescription vmstate_usb_msd = { 633 .name = "usb-storage", 634 .version_id = 1, 635 .minimum_version_id = 1, 636 .fields = (VMStateField[]) { 637 VMSTATE_USB_DEVICE(dev, MSDState), 638 VMSTATE_UINT32(mode, MSDState), 639 VMSTATE_UINT32(scsi_len, MSDState), 640 VMSTATE_UINT32(scsi_off, MSDState), 641 VMSTATE_UINT32(data_len, MSDState), 642 VMSTATE_UINT32(csw.sig, MSDState), 643 VMSTATE_UINT32(csw.tag, MSDState), 644 VMSTATE_UINT32(csw.residue, MSDState), 645 VMSTATE_UINT8(csw.status, MSDState), 646 VMSTATE_END_OF_LIST() 647 } 648 }; 649 650 static Property msd_properties[] = { 651 DEFINE_BLOCK_PROPERTIES(MSDState, conf), 652 DEFINE_BLOCK_ERROR_PROPERTIES(MSDState, conf), 653 DEFINE_PROP_BOOL("removable", MSDState, removable, false), 654 DEFINE_PROP_BOOL("commandlog", MSDState, commandlog, false), 655 DEFINE_PROP_END_OF_LIST(), 656 }; 657 658 static void usb_msd_class_initfn_common(ObjectClass *klass, void *data) 659 { 660 DeviceClass *dc = DEVICE_CLASS(klass); 661 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 662 663 uc->product_desc = "QEMU USB MSD"; 664 uc->usb_desc = &desc; 665 uc->cancel_packet = usb_msd_cancel_io; 666 uc->handle_attach = usb_desc_attach; 667 uc->handle_reset = usb_msd_handle_reset; 668 uc->handle_control = usb_msd_handle_control; 669 uc->handle_data = usb_msd_handle_data; 670 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 671 dc->fw_name = "storage"; 672 dc->vmsd = &vmstate_usb_msd; 673 } 674 675 static void usb_msd_class_storage_initfn(ObjectClass *klass, void *data) 676 { 677 DeviceClass *dc = DEVICE_CLASS(klass); 678 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 679 680 uc->realize = usb_msd_storage_realize; 681 device_class_set_props(dc, msd_properties); 682 } 683 684 static void usb_msd_get_bootindex(Object *obj, Visitor *v, const char *name, 685 void *opaque, Error **errp) 686 { 687 USBDevice *dev = USB_DEVICE(obj); 688 MSDState *s = USB_STORAGE_DEV(dev); 689 690 visit_type_int32(v, name, &s->conf.bootindex, errp); 691 } 692 693 static void usb_msd_set_bootindex(Object *obj, Visitor *v, const char *name, 694 void *opaque, Error **errp) 695 { 696 USBDevice *dev = USB_DEVICE(obj); 697 MSDState *s = USB_STORAGE_DEV(dev); 698 int32_t boot_index; 699 Error *local_err = NULL; 700 701 if (!visit_type_int32(v, name, &boot_index, errp)) { 702 return; 703 } 704 /* check whether bootindex is present in fw_boot_order list */ 705 check_boot_index(boot_index, &local_err); 706 if (local_err) { 707 goto out; 708 } 709 /* change bootindex to a new one */ 710 s->conf.bootindex = boot_index; 711 712 if (s->scsi_dev) { 713 object_property_set_int(OBJECT(s->scsi_dev), "bootindex", boot_index, 714 &error_abort); 715 } 716 717 out: 718 error_propagate(errp, local_err); 719 } 720 721 static const TypeInfo usb_storage_dev_type_info = { 722 .name = TYPE_USB_STORAGE, 723 .parent = TYPE_USB_DEVICE, 724 .instance_size = sizeof(MSDState), 725 .abstract = true, 726 .class_init = usb_msd_class_initfn_common, 727 }; 728 729 static void usb_msd_instance_init(Object *obj) 730 { 731 object_property_add(obj, "bootindex", "int32", 732 usb_msd_get_bootindex, 733 usb_msd_set_bootindex, NULL, NULL); 734 object_property_set_int(obj, "bootindex", -1, NULL); 735 } 736 737 static void usb_msd_class_bot_initfn(ObjectClass *klass, void *data) 738 { 739 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 740 741 uc->realize = usb_msd_bot_realize; 742 uc->attached_settable = true; 743 } 744 745 static const TypeInfo msd_info = { 746 .name = "usb-storage", 747 .parent = TYPE_USB_STORAGE, 748 .class_init = usb_msd_class_storage_initfn, 749 .instance_init = usb_msd_instance_init, 750 }; 751 752 static const TypeInfo bot_info = { 753 .name = "usb-bot", 754 .parent = TYPE_USB_STORAGE, 755 .class_init = usb_msd_class_bot_initfn, 756 }; 757 758 static void usb_msd_register_types(void) 759 { 760 type_register_static(&usb_storage_dev_type_info); 761 type_register_static(&msd_info); 762 type_register_static(&bot_info); 763 } 764 765 type_init(usb_msd_register_types) 766