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 "desc.h" 18 #include "hw/qdev-properties.h" 19 #include "hw/scsi/scsi.h" 20 #include "migration/vmstate.h" 21 #include "sysemu/sysemu.h" 22 #include "sysemu/block-backend.h" 23 #include "qapi/visitor.h" 24 #include "qemu/cutils.h" 25 26 //#define DEBUG_MSD 27 28 #ifdef DEBUG_MSD 29 #define DPRINTF(fmt, ...) \ 30 do { printf("usb-msd: " fmt , ## __VA_ARGS__); } while (0) 31 #else 32 #define DPRINTF(fmt, ...) do {} while(0) 33 #endif 34 35 /* USB requests. */ 36 #define MassStorageReset 0xff 37 #define GetMaxLun 0xfe 38 39 enum USBMSDMode { 40 USB_MSDM_CBW, /* Command Block. */ 41 USB_MSDM_DATAOUT, /* Transfer data to device. */ 42 USB_MSDM_DATAIN, /* Transfer data from device. */ 43 USB_MSDM_CSW /* Command Status. */ 44 }; 45 46 struct usb_msd_csw { 47 uint32_t sig; 48 uint32_t tag; 49 uint32_t residue; 50 uint8_t status; 51 }; 52 53 typedef struct { 54 USBDevice dev; 55 enum USBMSDMode mode; 56 uint32_t scsi_off; 57 uint32_t scsi_len; 58 uint32_t data_len; 59 struct usb_msd_csw csw; 60 SCSIRequest *req; 61 SCSIBus bus; 62 /* For async completion. */ 63 USBPacket *packet; 64 /* usb-storage only */ 65 BlockConf conf; 66 uint32_t removable; 67 SCSIDevice *scsi_dev; 68 } MSDState; 69 70 #define TYPE_USB_STORAGE "usb-storage-dev" 71 #define USB_STORAGE_DEV(obj) OBJECT_CHECK(MSDState, (obj), TYPE_USB_STORAGE) 72 73 struct usb_msd_cbw { 74 uint32_t sig; 75 uint32_t tag; 76 uint32_t data_len; 77 uint8_t flags; 78 uint8_t lun; 79 uint8_t cmd_len; 80 uint8_t cmd[16]; 81 }; 82 83 enum { 84 STR_MANUFACTURER = 1, 85 STR_PRODUCT, 86 STR_SERIALNUMBER, 87 STR_CONFIG_FULL, 88 STR_CONFIG_HIGH, 89 STR_CONFIG_SUPER, 90 }; 91 92 static const USBDescStrings desc_strings = { 93 [STR_MANUFACTURER] = "QEMU", 94 [STR_PRODUCT] = "QEMU USB HARDDRIVE", 95 [STR_SERIALNUMBER] = "1", 96 [STR_CONFIG_FULL] = "Full speed config (usb 1.1)", 97 [STR_CONFIG_HIGH] = "High speed config (usb 2.0)", 98 [STR_CONFIG_SUPER] = "Super speed config (usb 3.0)", 99 }; 100 101 static const USBDescIface desc_iface_full = { 102 .bInterfaceNumber = 0, 103 .bNumEndpoints = 2, 104 .bInterfaceClass = USB_CLASS_MASS_STORAGE, 105 .bInterfaceSubClass = 0x06, /* SCSI */ 106 .bInterfaceProtocol = 0x50, /* Bulk */ 107 .eps = (USBDescEndpoint[]) { 108 { 109 .bEndpointAddress = USB_DIR_IN | 0x01, 110 .bmAttributes = USB_ENDPOINT_XFER_BULK, 111 .wMaxPacketSize = 64, 112 },{ 113 .bEndpointAddress = USB_DIR_OUT | 0x02, 114 .bmAttributes = USB_ENDPOINT_XFER_BULK, 115 .wMaxPacketSize = 64, 116 }, 117 } 118 }; 119 120 static const USBDescDevice desc_device_full = { 121 .bcdUSB = 0x0200, 122 .bMaxPacketSize0 = 8, 123 .bNumConfigurations = 1, 124 .confs = (USBDescConfig[]) { 125 { 126 .bNumInterfaces = 1, 127 .bConfigurationValue = 1, 128 .iConfiguration = STR_CONFIG_FULL, 129 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, 130 .nif = 1, 131 .ifs = &desc_iface_full, 132 }, 133 }, 134 }; 135 136 static const USBDescIface desc_iface_high = { 137 .bInterfaceNumber = 0, 138 .bNumEndpoints = 2, 139 .bInterfaceClass = USB_CLASS_MASS_STORAGE, 140 .bInterfaceSubClass = 0x06, /* SCSI */ 141 .bInterfaceProtocol = 0x50, /* Bulk */ 142 .eps = (USBDescEndpoint[]) { 143 { 144 .bEndpointAddress = USB_DIR_IN | 0x01, 145 .bmAttributes = USB_ENDPOINT_XFER_BULK, 146 .wMaxPacketSize = 512, 147 },{ 148 .bEndpointAddress = USB_DIR_OUT | 0x02, 149 .bmAttributes = USB_ENDPOINT_XFER_BULK, 150 .wMaxPacketSize = 512, 151 }, 152 } 153 }; 154 155 static const USBDescDevice desc_device_high = { 156 .bcdUSB = 0x0200, 157 .bMaxPacketSize0 = 64, 158 .bNumConfigurations = 1, 159 .confs = (USBDescConfig[]) { 160 { 161 .bNumInterfaces = 1, 162 .bConfigurationValue = 1, 163 .iConfiguration = STR_CONFIG_HIGH, 164 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, 165 .nif = 1, 166 .ifs = &desc_iface_high, 167 }, 168 }, 169 }; 170 171 static const USBDescIface desc_iface_super = { 172 .bInterfaceNumber = 0, 173 .bNumEndpoints = 2, 174 .bInterfaceClass = USB_CLASS_MASS_STORAGE, 175 .bInterfaceSubClass = 0x06, /* SCSI */ 176 .bInterfaceProtocol = 0x50, /* Bulk */ 177 .eps = (USBDescEndpoint[]) { 178 { 179 .bEndpointAddress = USB_DIR_IN | 0x01, 180 .bmAttributes = USB_ENDPOINT_XFER_BULK, 181 .wMaxPacketSize = 1024, 182 .bMaxBurst = 15, 183 },{ 184 .bEndpointAddress = USB_DIR_OUT | 0x02, 185 .bmAttributes = USB_ENDPOINT_XFER_BULK, 186 .wMaxPacketSize = 1024, 187 .bMaxBurst = 15, 188 }, 189 } 190 }; 191 192 static const USBDescDevice desc_device_super = { 193 .bcdUSB = 0x0300, 194 .bMaxPacketSize0 = 9, 195 .bNumConfigurations = 1, 196 .confs = (USBDescConfig[]) { 197 { 198 .bNumInterfaces = 1, 199 .bConfigurationValue = 1, 200 .iConfiguration = STR_CONFIG_SUPER, 201 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, 202 .nif = 1, 203 .ifs = &desc_iface_super, 204 }, 205 }, 206 }; 207 208 static const USBDesc desc = { 209 .id = { 210 .idVendor = 0x46f4, /* CRC16() of "QEMU" */ 211 .idProduct = 0x0001, 212 .bcdDevice = 0, 213 .iManufacturer = STR_MANUFACTURER, 214 .iProduct = STR_PRODUCT, 215 .iSerialNumber = STR_SERIALNUMBER, 216 }, 217 .full = &desc_device_full, 218 .high = &desc_device_high, 219 .super = &desc_device_super, 220 .str = desc_strings, 221 }; 222 223 static void usb_msd_copy_data(MSDState *s, USBPacket *p) 224 { 225 uint32_t len; 226 len = p->iov.size - p->actual_length; 227 if (len > s->scsi_len) 228 len = s->scsi_len; 229 usb_packet_copy(p, scsi_req_get_buf(s->req) + s->scsi_off, len); 230 s->scsi_len -= len; 231 s->scsi_off += len; 232 if (len > s->data_len) { 233 len = s->data_len; 234 } 235 s->data_len -= len; 236 if (s->scsi_len == 0 || s->data_len == 0) { 237 scsi_req_continue(s->req); 238 } 239 } 240 241 static void usb_msd_send_status(MSDState *s, USBPacket *p) 242 { 243 int len; 244 245 DPRINTF("Command status %d tag 0x%x, len %zd\n", 246 s->csw.status, le32_to_cpu(s->csw.tag), p->iov.size); 247 248 assert(s->csw.sig == cpu_to_le32(0x53425355)); 249 len = MIN(sizeof(s->csw), p->iov.size); 250 usb_packet_copy(p, &s->csw, len); 251 memset(&s->csw, 0, sizeof(s->csw)); 252 } 253 254 static void usb_msd_packet_complete(MSDState *s) 255 { 256 USBPacket *p = s->packet; 257 258 /* Set s->packet to NULL before calling usb_packet_complete 259 because another request may be issued before 260 usb_packet_complete returns. */ 261 DPRINTF("Packet complete %p\n", p); 262 s->packet = NULL; 263 usb_packet_complete(&s->dev, p); 264 } 265 266 static void usb_msd_transfer_data(SCSIRequest *req, uint32_t len) 267 { 268 MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); 269 USBPacket *p = s->packet; 270 271 assert((s->mode == USB_MSDM_DATAOUT) == (req->cmd.mode == SCSI_XFER_TO_DEV)); 272 s->scsi_len = len; 273 s->scsi_off = 0; 274 if (p) { 275 usb_msd_copy_data(s, p); 276 p = s->packet; 277 if (p && p->actual_length == p->iov.size) { 278 p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */ 279 usb_msd_packet_complete(s); 280 } 281 } 282 } 283 284 static void usb_msd_command_complete(SCSIRequest *req, uint32_t status, size_t resid) 285 { 286 MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); 287 USBPacket *p = s->packet; 288 289 DPRINTF("Command complete %d tag 0x%x\n", status, req->tag); 290 291 s->csw.sig = cpu_to_le32(0x53425355); 292 s->csw.tag = cpu_to_le32(req->tag); 293 s->csw.residue = cpu_to_le32(s->data_len); 294 s->csw.status = status != 0; 295 296 if (s->packet) { 297 if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) { 298 /* A deferred packet with no write data remaining must be 299 the status read packet. */ 300 usb_msd_send_status(s, p); 301 s->mode = USB_MSDM_CBW; 302 } else if (s->mode == USB_MSDM_CSW) { 303 usb_msd_send_status(s, p); 304 s->mode = USB_MSDM_CBW; 305 } else { 306 if (s->data_len) { 307 int len = (p->iov.size - p->actual_length); 308 usb_packet_skip(p, len); 309 if (len > s->data_len) { 310 len = s->data_len; 311 } 312 s->data_len -= len; 313 } 314 if (s->data_len == 0) { 315 s->mode = USB_MSDM_CSW; 316 } 317 } 318 p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */ 319 usb_msd_packet_complete(s); 320 } else if (s->data_len == 0) { 321 s->mode = USB_MSDM_CSW; 322 } 323 scsi_req_unref(req); 324 s->req = NULL; 325 } 326 327 static void usb_msd_request_cancelled(SCSIRequest *req) 328 { 329 MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); 330 331 if (req == s->req) { 332 scsi_req_unref(s->req); 333 s->req = NULL; 334 s->scsi_len = 0; 335 } 336 } 337 338 static void usb_msd_handle_reset(USBDevice *dev) 339 { 340 MSDState *s = (MSDState *)dev; 341 342 DPRINTF("Reset\n"); 343 if (s->req) { 344 scsi_req_cancel(s->req); 345 } 346 assert(s->req == NULL); 347 348 if (s->packet) { 349 s->packet->status = USB_RET_STALL; 350 usb_msd_packet_complete(s); 351 } 352 353 s->mode = USB_MSDM_CBW; 354 } 355 356 static void usb_msd_handle_control(USBDevice *dev, USBPacket *p, 357 int request, int value, int index, int length, uint8_t *data) 358 { 359 MSDState *s = (MSDState *)dev; 360 SCSIDevice *scsi_dev; 361 int ret, maxlun; 362 363 ret = usb_desc_handle_control(dev, p, request, value, index, length, data); 364 if (ret >= 0) { 365 return; 366 } 367 368 switch (request) { 369 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: 370 break; 371 /* Class specific requests. */ 372 case ClassInterfaceOutRequest | MassStorageReset: 373 /* Reset state ready for the next CBW. */ 374 s->mode = USB_MSDM_CBW; 375 break; 376 case ClassInterfaceRequest | GetMaxLun: 377 maxlun = 0; 378 for (;;) { 379 scsi_dev = scsi_device_find(&s->bus, 0, 0, maxlun+1); 380 if (scsi_dev == NULL) { 381 break; 382 } 383 if (scsi_dev->lun != maxlun+1) { 384 break; 385 } 386 maxlun++; 387 } 388 DPRINTF("MaxLun %d\n", maxlun); 389 data[0] = maxlun; 390 p->actual_length = 1; 391 break; 392 default: 393 p->status = USB_RET_STALL; 394 break; 395 } 396 } 397 398 static void usb_msd_cancel_io(USBDevice *dev, USBPacket *p) 399 { 400 MSDState *s = USB_STORAGE_DEV(dev); 401 402 assert(s->packet == p); 403 s->packet = NULL; 404 405 if (s->req) { 406 scsi_req_cancel(s->req); 407 } 408 } 409 410 static void usb_msd_handle_data(USBDevice *dev, USBPacket *p) 411 { 412 MSDState *s = (MSDState *)dev; 413 uint32_t tag; 414 struct usb_msd_cbw cbw; 415 uint8_t devep = p->ep->nr; 416 SCSIDevice *scsi_dev; 417 uint32_t len; 418 419 switch (p->pid) { 420 case USB_TOKEN_OUT: 421 if (devep != 2) 422 goto fail; 423 424 switch (s->mode) { 425 case USB_MSDM_CBW: 426 if (p->iov.size != 31) { 427 error_report("usb-msd: Bad CBW size"); 428 goto fail; 429 } 430 usb_packet_copy(p, &cbw, 31); 431 if (le32_to_cpu(cbw.sig) != 0x43425355) { 432 error_report("usb-msd: Bad signature %08x", 433 le32_to_cpu(cbw.sig)); 434 goto fail; 435 } 436 DPRINTF("Command on LUN %d\n", cbw.lun); 437 scsi_dev = scsi_device_find(&s->bus, 0, 0, cbw.lun); 438 if (scsi_dev == NULL) { 439 error_report("usb-msd: Bad LUN %d", cbw.lun); 440 goto fail; 441 } 442 tag = le32_to_cpu(cbw.tag); 443 s->data_len = le32_to_cpu(cbw.data_len); 444 if (s->data_len == 0) { 445 s->mode = USB_MSDM_CSW; 446 } else if (cbw.flags & 0x80) { 447 s->mode = USB_MSDM_DATAIN; 448 } else { 449 s->mode = USB_MSDM_DATAOUT; 450 } 451 DPRINTF("Command tag 0x%x flags %08x len %d data %d\n", 452 tag, cbw.flags, cbw.cmd_len, s->data_len); 453 assert(le32_to_cpu(s->csw.residue) == 0); 454 s->scsi_len = 0; 455 s->req = scsi_req_new(scsi_dev, tag, cbw.lun, cbw.cmd, NULL); 456 #ifdef DEBUG_MSD 457 scsi_req_print(s->req); 458 #endif 459 len = scsi_req_enqueue(s->req); 460 if (len) { 461 scsi_req_continue(s->req); 462 } 463 break; 464 465 case USB_MSDM_DATAOUT: 466 DPRINTF("Data out %zd/%d\n", p->iov.size, s->data_len); 467 if (p->iov.size > s->data_len) { 468 goto fail; 469 } 470 471 if (s->scsi_len) { 472 usb_msd_copy_data(s, p); 473 } 474 if (le32_to_cpu(s->csw.residue)) { 475 int len = p->iov.size - p->actual_length; 476 if (len) { 477 usb_packet_skip(p, len); 478 if (len > s->data_len) { 479 len = s->data_len; 480 } 481 s->data_len -= len; 482 if (s->data_len == 0) { 483 s->mode = USB_MSDM_CSW; 484 } 485 } 486 } 487 if (p->actual_length < p->iov.size) { 488 DPRINTF("Deferring packet %p [wait data-out]\n", p); 489 s->packet = p; 490 p->status = USB_RET_ASYNC; 491 } 492 break; 493 494 default: 495 DPRINTF("Unexpected write (len %zd)\n", p->iov.size); 496 goto fail; 497 } 498 break; 499 500 case USB_TOKEN_IN: 501 if (devep != 1) 502 goto fail; 503 504 switch (s->mode) { 505 case USB_MSDM_DATAOUT: 506 if (s->data_len != 0 || p->iov.size < 13) { 507 goto fail; 508 } 509 /* Waiting for SCSI write to complete. */ 510 s->packet = p; 511 p->status = USB_RET_ASYNC; 512 break; 513 514 case USB_MSDM_CSW: 515 if (p->iov.size < 13) { 516 goto fail; 517 } 518 519 if (s->req) { 520 /* still in flight */ 521 DPRINTF("Deferring packet %p [wait status]\n", p); 522 s->packet = p; 523 p->status = USB_RET_ASYNC; 524 } else { 525 usb_msd_send_status(s, p); 526 s->mode = USB_MSDM_CBW; 527 } 528 break; 529 530 case USB_MSDM_DATAIN: 531 DPRINTF("Data in %zd/%d, scsi_len %d\n", 532 p->iov.size, s->data_len, s->scsi_len); 533 if (s->scsi_len) { 534 usb_msd_copy_data(s, p); 535 } 536 if (le32_to_cpu(s->csw.residue)) { 537 int len = p->iov.size - p->actual_length; 538 if (len) { 539 usb_packet_skip(p, len); 540 if (len > s->data_len) { 541 len = s->data_len; 542 } 543 s->data_len -= len; 544 if (s->data_len == 0) { 545 s->mode = USB_MSDM_CSW; 546 } 547 } 548 } 549 if (p->actual_length < p->iov.size && (p->short_not_ok || 550 s->scsi_len >= p->ep->max_packet_size)) { 551 DPRINTF("Deferring packet %p [wait data-in]\n", p); 552 s->packet = p; 553 p->status = USB_RET_ASYNC; 554 } 555 break; 556 557 default: 558 DPRINTF("Unexpected read (len %zd)\n", p->iov.size); 559 goto fail; 560 } 561 break; 562 563 default: 564 DPRINTF("Bad token\n"); 565 fail: 566 p->status = USB_RET_STALL; 567 break; 568 } 569 } 570 571 static void *usb_msd_load_request(QEMUFile *f, SCSIRequest *req) 572 { 573 MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent); 574 575 /* nothing to load, just store req in our state struct */ 576 assert(s->req == NULL); 577 scsi_req_ref(req); 578 s->req = req; 579 return NULL; 580 } 581 582 static const struct SCSIBusInfo usb_msd_scsi_info_storage = { 583 .tcq = false, 584 .max_target = 0, 585 .max_lun = 0, 586 587 .transfer_data = usb_msd_transfer_data, 588 .complete = usb_msd_command_complete, 589 .cancel = usb_msd_request_cancelled, 590 .load_request = usb_msd_load_request, 591 }; 592 593 static const struct SCSIBusInfo usb_msd_scsi_info_bot = { 594 .tcq = false, 595 .max_target = 0, 596 .max_lun = 15, 597 598 .transfer_data = usb_msd_transfer_data, 599 .complete = usb_msd_command_complete, 600 .cancel = usb_msd_request_cancelled, 601 .load_request = usb_msd_load_request, 602 }; 603 604 static void usb_msd_storage_realize(USBDevice *dev, Error **errp) 605 { 606 MSDState *s = USB_STORAGE_DEV(dev); 607 BlockBackend *blk = s->conf.blk; 608 SCSIDevice *scsi_dev; 609 610 if (!blk) { 611 error_setg(errp, "drive property not set"); 612 return; 613 } 614 615 blkconf_blocksizes(&s->conf); 616 if (!blkconf_apply_backend_options(&s->conf, blk_is_read_only(blk), true, 617 errp)) { 618 return; 619 } 620 621 /* 622 * Hack alert: this pretends to be a block device, but it's really 623 * a SCSI bus that can serve only a single device, which it 624 * creates automatically. But first it needs to detach from its 625 * blockdev, or else scsi_bus_legacy_add_drive() dies when it 626 * attaches again. We also need to take another reference so that 627 * blk_detach_dev() doesn't free blk while we still need it. 628 * 629 * The hack is probably a bad idea. 630 */ 631 blk_ref(blk); 632 blk_detach_dev(blk, DEVICE(s)); 633 s->conf.blk = NULL; 634 635 usb_desc_create_serial(dev); 636 usb_desc_init(dev); 637 scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev), 638 &usb_msd_scsi_info_storage, NULL); 639 scsi_dev = scsi_bus_legacy_add_drive(&s->bus, blk, 0, !!s->removable, 640 s->conf.bootindex, s->conf.share_rw, 641 s->conf.rerror, s->conf.werror, 642 dev->serial, 643 errp); 644 blk_unref(blk); 645 if (!scsi_dev) { 646 return; 647 } 648 usb_msd_handle_reset(dev); 649 s->scsi_dev = scsi_dev; 650 } 651 652 static void usb_msd_bot_realize(USBDevice *dev, Error **errp) 653 { 654 MSDState *s = USB_STORAGE_DEV(dev); 655 DeviceState *d = DEVICE(dev); 656 657 usb_desc_create_serial(dev); 658 usb_desc_init(dev); 659 if (d->hotplugged) { 660 s->dev.auto_attach = 0; 661 } 662 663 scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev), 664 &usb_msd_scsi_info_bot, NULL); 665 usb_msd_handle_reset(dev); 666 } 667 668 static const VMStateDescription vmstate_usb_msd = { 669 .name = "usb-storage", 670 .version_id = 1, 671 .minimum_version_id = 1, 672 .fields = (VMStateField[]) { 673 VMSTATE_USB_DEVICE(dev, MSDState), 674 VMSTATE_UINT32(mode, MSDState), 675 VMSTATE_UINT32(scsi_len, MSDState), 676 VMSTATE_UINT32(scsi_off, MSDState), 677 VMSTATE_UINT32(data_len, MSDState), 678 VMSTATE_UINT32(csw.sig, MSDState), 679 VMSTATE_UINT32(csw.tag, MSDState), 680 VMSTATE_UINT32(csw.residue, MSDState), 681 VMSTATE_UINT8(csw.status, MSDState), 682 VMSTATE_END_OF_LIST() 683 } 684 }; 685 686 static Property msd_properties[] = { 687 DEFINE_BLOCK_PROPERTIES(MSDState, conf), 688 DEFINE_BLOCK_ERROR_PROPERTIES(MSDState, conf), 689 DEFINE_PROP_BIT("removable", MSDState, removable, 0, false), 690 DEFINE_PROP_END_OF_LIST(), 691 }; 692 693 static void usb_msd_class_initfn_common(ObjectClass *klass, void *data) 694 { 695 DeviceClass *dc = DEVICE_CLASS(klass); 696 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 697 698 uc->product_desc = "QEMU USB MSD"; 699 uc->usb_desc = &desc; 700 uc->cancel_packet = usb_msd_cancel_io; 701 uc->handle_attach = usb_desc_attach; 702 uc->handle_reset = usb_msd_handle_reset; 703 uc->handle_control = usb_msd_handle_control; 704 uc->handle_data = usb_msd_handle_data; 705 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 706 dc->fw_name = "storage"; 707 dc->vmsd = &vmstate_usb_msd; 708 } 709 710 static void usb_msd_class_storage_initfn(ObjectClass *klass, void *data) 711 { 712 DeviceClass *dc = DEVICE_CLASS(klass); 713 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 714 715 uc->realize = usb_msd_storage_realize; 716 device_class_set_props(dc, msd_properties); 717 } 718 719 static void usb_msd_get_bootindex(Object *obj, Visitor *v, const char *name, 720 void *opaque, Error **errp) 721 { 722 USBDevice *dev = USB_DEVICE(obj); 723 MSDState *s = USB_STORAGE_DEV(dev); 724 725 visit_type_int32(v, name, &s->conf.bootindex, errp); 726 } 727 728 static void usb_msd_set_bootindex(Object *obj, Visitor *v, const char *name, 729 void *opaque, Error **errp) 730 { 731 USBDevice *dev = USB_DEVICE(obj); 732 MSDState *s = USB_STORAGE_DEV(dev); 733 int32_t boot_index; 734 Error *local_err = NULL; 735 736 visit_type_int32(v, name, &boot_index, &local_err); 737 if (local_err) { 738 goto out; 739 } 740 /* check whether bootindex is present in fw_boot_order list */ 741 check_boot_index(boot_index, &local_err); 742 if (local_err) { 743 goto out; 744 } 745 /* change bootindex to a new one */ 746 s->conf.bootindex = boot_index; 747 748 if (s->scsi_dev) { 749 object_property_set_int(OBJECT(s->scsi_dev), boot_index, "bootindex", 750 &error_abort); 751 } 752 753 out: 754 error_propagate(errp, local_err); 755 } 756 757 static const TypeInfo usb_storage_dev_type_info = { 758 .name = TYPE_USB_STORAGE, 759 .parent = TYPE_USB_DEVICE, 760 .instance_size = sizeof(MSDState), 761 .abstract = true, 762 .class_init = usb_msd_class_initfn_common, 763 }; 764 765 static void usb_msd_instance_init(Object *obj) 766 { 767 object_property_add(obj, "bootindex", "int32", 768 usb_msd_get_bootindex, 769 usb_msd_set_bootindex, NULL, NULL); 770 object_property_set_int(obj, -1, "bootindex", NULL); 771 } 772 773 static void usb_msd_class_bot_initfn(ObjectClass *klass, void *data) 774 { 775 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 776 777 uc->realize = usb_msd_bot_realize; 778 uc->attached_settable = true; 779 } 780 781 static const TypeInfo msd_info = { 782 .name = "usb-storage", 783 .parent = TYPE_USB_STORAGE, 784 .class_init = usb_msd_class_storage_initfn, 785 .instance_init = usb_msd_instance_init, 786 }; 787 788 static const TypeInfo bot_info = { 789 .name = "usb-bot", 790 .parent = TYPE_USB_STORAGE, 791 .class_init = usb_msd_class_bot_initfn, 792 }; 793 794 static void usb_msd_register_types(void) 795 { 796 type_register_static(&usb_storage_dev_type_info); 797 type_register_static(&msd_info); 798 type_register_static(&bot_info); 799 } 800 801 type_init(usb_msd_register_types) 802