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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 | /* * The Mass Storage protocol state machine in this file is based on mbed's * implementation. We augment it by adding Zephyr's USB transport and Storage * APIs. * * Copyright (c) 2010-2011 mbed.org, MIT License * Copyright (c) 2016 Intel Corporation. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ /** * @file * @brief Mass Storage device class driver * * Driver for USB Mass Storage device class driver */ #include <init.h> #include <errno.h> #include <string.h> #include <sys/byteorder.h> #include <sys/__assert.h> #include <disk/disk_access.h> #include <usb/class/usb_msc.h> #include <usb/usb_device.h> #include <usb/usb_common.h> #include <usb_descriptor.h> #define LOG_LEVEL CONFIG_USB_MASS_STORAGE_LOG_LEVEL #include <logging/log.h> LOG_MODULE_REGISTER(usb_msc); /* max USB packet size */ #define MAX_PACKET CONFIG_MASS_STORAGE_BULK_EP_MPS #define BLOCK_SIZE 512 #define DISK_THREAD_STACK_SZ 512 #define DISK_THREAD_PRIO -5 #define THREAD_OP_READ_QUEUED 1 #define THREAD_OP_WRITE_QUEUED 3 #define THREAD_OP_WRITE_DONE 4 #define MASS_STORAGE_IN_EP_ADDR 0x82 #define MASS_STORAGE_OUT_EP_ADDR 0x01 struct usb_mass_config { struct usb_if_descriptor if0; struct usb_ep_descriptor if0_in_ep; struct usb_ep_descriptor if0_out_ep; } __packed; USBD_CLASS_DESCR_DEFINE(primary, 0) struct usb_mass_config mass_cfg = { /* Interface descriptor */ .if0 = { .bLength = sizeof(struct usb_if_descriptor), .bDescriptorType = USB_INTERFACE_DESC, .bInterfaceNumber = 0, .bAlternateSetting = 0, .bNumEndpoints = 2, .bInterfaceClass = MASS_STORAGE_CLASS, .bInterfaceSubClass = SCSI_TRANSPARENT_SUBCLASS, .bInterfaceProtocol = BULK_ONLY_PROTOCOL, .iInterface = 0, }, /* First Endpoint IN */ .if0_in_ep = { .bLength = sizeof(struct usb_ep_descriptor), .bDescriptorType = USB_ENDPOINT_DESC, .bEndpointAddress = MASS_STORAGE_IN_EP_ADDR, .bmAttributes = USB_DC_EP_BULK, .wMaxPacketSize = sys_cpu_to_le16(CONFIG_MASS_STORAGE_BULK_EP_MPS), .bInterval = 0x00, }, /* Second Endpoint OUT */ .if0_out_ep = { .bLength = sizeof(struct usb_ep_descriptor), .bDescriptorType = USB_ENDPOINT_DESC, .bEndpointAddress = MASS_STORAGE_OUT_EP_ADDR, .bmAttributes = USB_DC_EP_BULK, .wMaxPacketSize = sys_cpu_to_le16(CONFIG_MASS_STORAGE_BULK_EP_MPS), .bInterval = 0x00, }, }; static volatile int thread_op; static K_THREAD_STACK_DEFINE(mass_thread_stack, DISK_THREAD_STACK_SZ); static struct k_thread mass_thread_data; static struct k_sem disk_wait_sem; static volatile u32_t defered_wr_sz; static u8_t page[BLOCK_SIZE]; /* Initialized during mass_storage_init() */ static u32_t memory_size; static u32_t block_count; static const char *disk_pdrv = CONFIG_MASS_STORAGE_DISK_NAME; #define MSD_OUT_EP_IDX 0 #define MSD_IN_EP_IDX 1 static void mass_storage_bulk_out(u8_t ep, enum usb_dc_ep_cb_status_code ep_status); static void mass_storage_bulk_in(u8_t ep, enum usb_dc_ep_cb_status_code ep_status); /* Describe EndPoints configuration */ static struct usb_ep_cfg_data mass_ep_data[] = { { .ep_cb = mass_storage_bulk_out, .ep_addr = MASS_STORAGE_OUT_EP_ADDR }, { .ep_cb = mass_storage_bulk_in, .ep_addr = MASS_STORAGE_IN_EP_ADDR } }; /* CSW Status */ enum Status { CSW_PASSED, CSW_FAILED, CSW_ERROR, }; /* MSC Bulk-only Stage */ enum Stage { MSC_READ_CBW, /* wait a CBW */ MSC_ERROR, /* error */ MSC_PROCESS_CBW, /* process a CBW request */ MSC_SEND_CSW, /* send a CSW */ MSC_WAIT_CSW /* wait that a CSW has been effectively sent */ }; /* state of the bulk-only state machine */ static enum Stage stage; /*current CBW*/ static struct CBW cbw; /*CSW which will be sent*/ static struct CSW csw; /*addr where will be read or written data*/ static u32_t addr; /*length of a reading or writing*/ static u32_t length; static u8_t max_lun_count; /*memory OK (after a memoryVerify)*/ static bool memOK; static void msd_state_machine_reset(void) { stage = MSC_READ_CBW; } static void msd_init(void) { (void)memset((void *)&cbw, 0, sizeof(struct CBW)); (void)memset((void *)&csw, 0, sizeof(struct CSW)); (void)memset(page, 0, sizeof(page)); addr = 0U; length = 0U; } static void sendCSW(void) { csw.Signature = CSW_Signature; if (usb_write(mass_ep_data[MSD_IN_EP_IDX].ep_addr, (u8_t *)&csw, sizeof(struct CSW), NULL) != 0) { LOG_ERR("usb write failure"); } stage = MSC_WAIT_CSW; } static bool write(u8_t *buf, u16_t size) { if (size >= cbw.DataLength) { size = cbw.DataLength; } /* updating the State Machine , so that we send CSW when this * transfer is complete, ie when we get a bulk in callback */ stage = MSC_SEND_CSW; if (usb_write(mass_ep_data[MSD_IN_EP_IDX].ep_addr, buf, size, NULL)) { LOG_ERR("USB write failed"); return false; } csw.DataResidue -= size; csw.Status = CSW_PASSED; return true; } /** * @brief Handler called for Class requests not handled by the USB stack. * * @param pSetup Information about the request to execute. * @param len Size of the buffer. * @param data Buffer containing the request result. * * @return 0 on success, negative errno code on fail. */ static int mass_storage_class_handle_req(struct usb_setup_packet *pSetup, s32_t *len, u8_t **data) { if (sys_le16_to_cpu(pSetup->wIndex) != mass_cfg.if0.bInterfaceNumber || sys_le16_to_cpu(pSetup->wValue) != 0) { LOG_WRN("Invalid setup parameters"); return -EINVAL; } switch (pSetup->bRequest) { case MSC_REQUEST_RESET: LOG_DBG("MSC_REQUEST_RESET"); if (sys_le16_to_cpu(pSetup->wLength)) { LOG_WRN("Invalid length"); return -EINVAL; } msd_state_machine_reset(); break; case MSC_REQUEST_GET_MAX_LUN: LOG_DBG("MSC_REQUEST_GET_MAX_LUN"); if (sys_le16_to_cpu(pSetup->wLength) != 1) { LOG_WRN("Invalid length"); return -EINVAL; } max_lun_count = 0U; *data = (u8_t *)(&max_lun_count); *len = 1; break; default: LOG_WRN("Unknown request 0x%x, value 0x%x", pSetup->bRequest, pSetup->wValue); return -EINVAL; } return 0; } static void testUnitReady(void) { if (cbw.DataLength != 0U) { if ((cbw.Flags & 0x80) != 0U) { LOG_WRN("Stall IN endpoint"); usb_ep_set_stall(mass_ep_data[MSD_IN_EP_IDX].ep_addr); } else { LOG_WRN("Stall OUT endpoint"); usb_ep_set_stall(mass_ep_data[MSD_OUT_EP_IDX].ep_addr); } } csw.Status = CSW_PASSED; sendCSW(); } static bool requestSense(void) { u8_t request_sense[] = { 0x70, 0x00, 0x05, /* Sense Key: illegal request */ 0x00, 0x00, 0x00, 0x00, 0x0A, 0x00, 0x00, 0x00, 0x00, 0x30, 0x01, 0x00, 0x00, 0x00, 0x00, }; return write(request_sense, sizeof(request_sense)); } static bool inquiryRequest(void) { u8_t inquiry[] = { 0x00, 0x80, 0x00, 0x01, 36 - 4, 0x80, 0x00, 0x00, 'Z', 'E', 'P', 'H', 'Y', 'R', ' ', ' ', 'Z', 'E', 'P', 'H', 'Y', 'R', ' ', 'U', 'S', 'B', ' ', 'D', 'I', 'S', 'K', ' ', '0', '.', '0', '1', }; return write(inquiry, sizeof(inquiry)); } static bool modeSense6(void) { u8_t sense6[] = { 0x03, 0x00, 0x00, 0x00 }; return write(sense6, sizeof(sense6)); } static bool readFormatCapacity(void) { u8_t capacity[] = { 0x00, 0x00, 0x00, 0x08, (u8_t)((block_count >> 24) & 0xff), (u8_t)((block_count >> 16) & 0xff), (u8_t)((block_count >> 8) & 0xff), (u8_t)((block_count >> 0) & 0xff), 0x02, (u8_t)((BLOCK_SIZE >> 16) & 0xff), (u8_t)((BLOCK_SIZE >> 8) & 0xff), (u8_t)((BLOCK_SIZE >> 0) & 0xff), }; return write(capacity, sizeof(capacity)); } static bool readCapacity(void) { u8_t capacity[] = { (u8_t)(((block_count - 1) >> 24) & 0xff), (u8_t)(((block_count - 1) >> 16) & 0xff), (u8_t)(((block_count - 1) >> 8) & 0xff), (u8_t)(((block_count - 1) >> 0) & 0xff), (u8_t)((BLOCK_SIZE >> 24) & 0xff), (u8_t)((BLOCK_SIZE >> 16) & 0xff), (u8_t)((BLOCK_SIZE >> 8) & 0xff), (u8_t)((BLOCK_SIZE >> 0) & 0xff), }; return write(capacity, sizeof(capacity)); } static void thread_memory_read_done(void) { u32_t n; n = (length > MAX_PACKET) ? MAX_PACKET : length; if ((addr + n) > memory_size) { n = memory_size - addr; stage = MSC_ERROR; } if (usb_write(mass_ep_data[MSD_IN_EP_IDX].ep_addr, &page[addr % BLOCK_SIZE], n, NULL) != 0) { LOG_ERR("Failed to write EP 0x%x", mass_ep_data[MSD_IN_EP_IDX].ep_addr); } addr += n; length -= n; csw.DataResidue -= n; if (!length || (stage != MSC_PROCESS_CBW)) { csw.Status = (stage == MSC_PROCESS_CBW) ? CSW_PASSED : CSW_FAILED; stage = (stage == MSC_PROCESS_CBW) ? MSC_SEND_CSW : stage; } } static void memoryRead(void) { u32_t n; n = (length > MAX_PACKET) ? MAX_PACKET : length; if ((addr + n) > memory_size) { n = memory_size - addr; stage = MSC_ERROR; } /* we read an entire block */ if (!(addr % BLOCK_SIZE)) { thread_op = THREAD_OP_READ_QUEUED; LOG_DBG("Signal thread for %d", (addr/BLOCK_SIZE)); k_sem_give(&disk_wait_sem); return; } usb_write(mass_ep_data[MSD_IN_EP_IDX].ep_addr, &page[addr % BLOCK_SIZE], n, NULL); addr += n; length -= n; csw.DataResidue -= n; if (!length || (stage != MSC_PROCESS_CBW)) { csw.Status = (stage == MSC_PROCESS_CBW) ? CSW_PASSED : CSW_FAILED; stage = (stage == MSC_PROCESS_CBW) ? MSC_SEND_CSW : stage; } } static bool infoTransfer(void) { u32_t n; /* Logical Block Address of First Block */ n = (cbw.CB[2] << 24) | (cbw.CB[3] << 16) | (cbw.CB[4] << 8) | (cbw.CB[5] << 0); LOG_DBG("LBA (block) : 0x%x ", n); addr = n * BLOCK_SIZE; /* Number of Blocks to transfer */ switch (cbw.CB[0]) { case READ10: case WRITE10: case VERIFY10: n = (cbw.CB[7] << 8) | (cbw.CB[8] << 0); break; case READ12: case WRITE12: n = (cbw.CB[6] << 24) | (cbw.CB[7] << 16) | (cbw.CB[8] << 8) | (cbw.CB[9] << 0); break; } LOG_DBG("Size (block) : 0x%x ", n); length = n * BLOCK_SIZE; if (!cbw.DataLength) { /* host requests no data*/ LOG_WRN("Zero length in CBW"); csw.Status = CSW_FAILED; sendCSW(); return false; } if (cbw.DataLength != length) { if ((cbw.Flags & 0x80) != 0U) { LOG_WRN("Stall IN endpoint"); usb_ep_set_stall(mass_ep_data[MSD_IN_EP_IDX].ep_addr); } else { LOG_WRN("Stall OUT endpoint"); usb_ep_set_stall(mass_ep_data[MSD_OUT_EP_IDX].ep_addr); } csw.Status = CSW_FAILED; sendCSW(); return false; } return true; } static void fail(void) { csw.Status = CSW_FAILED; sendCSW(); } static void CBWDecode(u8_t *buf, u16_t size) { if (size != sizeof(cbw)) { LOG_ERR("size != sizeof(cbw)"); return; } memcpy((u8_t *)&cbw, buf, size); if (cbw.Signature != CBW_Signature) { LOG_ERR("CBW Signature Mismatch"); return; } csw.Tag = cbw.Tag; csw.DataResidue = cbw.DataLength; if ((cbw.CBLength < 1) || (cbw.CBLength > 16) || (cbw.LUN != 0U)) { LOG_WRN("cbw.CBLength %d", cbw.CBLength); fail(); } else { switch (cbw.CB[0]) { case TEST_UNIT_READY: LOG_DBG(">> TUR"); testUnitReady(); break; case REQUEST_SENSE: LOG_DBG(">> REQ_SENSE"); requestSense(); break; case INQUIRY: LOG_DBG(">> INQ"); inquiryRequest(); break; case MODE_SENSE6: LOG_DBG(">> MODE_SENSE6"); modeSense6(); break; case READ_FORMAT_CAPACITIES: LOG_DBG(">> READ_FORMAT_CAPACITY"); readFormatCapacity(); break; case READ_CAPACITY: LOG_DBG(">> READ_CAPACITY"); readCapacity(); break; case READ10: case READ12: LOG_DBG(">> READ"); if (infoTransfer()) { if ((cbw.Flags & 0x80)) { stage = MSC_PROCESS_CBW; memoryRead(); } else { usb_ep_set_stall( mass_ep_data[MSD_OUT_EP_IDX].ep_addr); LOG_WRN("Stall OUT endpoint"); csw.Status = CSW_ERROR; sendCSW(); } } break; case WRITE10: case WRITE12: LOG_DBG(">> WRITE"); if (infoTransfer()) { if (!(cbw.Flags & 0x80)) { stage = MSC_PROCESS_CBW; } else { usb_ep_set_stall( mass_ep_data[MSD_IN_EP_IDX].ep_addr); LOG_WRN("Stall IN endpoint"); csw.Status = CSW_ERROR; sendCSW(); } } break; case VERIFY10: LOG_DBG(">> VERIFY10"); if (!(cbw.CB[1] & 0x02)) { csw.Status = CSW_PASSED; sendCSW(); break; } if (infoTransfer()) { if (!(cbw.Flags & 0x80)) { stage = MSC_PROCESS_CBW; memOK = true; } else { usb_ep_set_stall( mass_ep_data[MSD_IN_EP_IDX].ep_addr); LOG_WRN("Stall IN endpoint"); csw.Status = CSW_ERROR; sendCSW(); } } break; case MEDIA_REMOVAL: LOG_DBG(">> MEDIA_REMOVAL"); csw.Status = CSW_PASSED; sendCSW(); break; default: LOG_WRN(">> default CB[0] %x", cbw.CB[0]); fail(); break; } /*switch(cbw.CB[0])*/ } /* else */ } static void memoryVerify(u8_t *buf, u16_t size) { u32_t n; if ((addr + size) > memory_size) { size = memory_size - addr; stage = MSC_ERROR; usb_ep_set_stall(mass_ep_data[MSD_OUT_EP_IDX].ep_addr); LOG_WRN("Stall OUT endpoint"); } /* beginning of a new block -> load a whole block in RAM */ if (!(addr % BLOCK_SIZE)) { LOG_DBG("Disk READ sector %d", addr/BLOCK_SIZE); if (disk_access_read(disk_pdrv, page, addr/BLOCK_SIZE, 1)) { LOG_ERR("---- Disk Read Error %d", addr/BLOCK_SIZE); } } /* info are in RAM -> no need to re-read memory */ for (n = 0U; n < size; n++) { if (page[addr%BLOCK_SIZE + n] != buf[n]) { LOG_DBG("Mismatch sector %d offset %d", addr/BLOCK_SIZE, n); memOK = false; break; } } addr += size; length -= size; csw.DataResidue -= size; if (!length || (stage != MSC_PROCESS_CBW)) { csw.Status = (memOK && (stage == MSC_PROCESS_CBW)) ? CSW_PASSED : CSW_FAILED; sendCSW(); } } static void memoryWrite(u8_t *buf, u16_t size) { if ((addr + size) > memory_size) { size = memory_size - addr; stage = MSC_ERROR; usb_ep_set_stall(mass_ep_data[MSD_OUT_EP_IDX].ep_addr); LOG_WRN("Stall OUT endpoint"); } /* we fill an array in RAM of 1 block before writing it in memory */ for (int i = 0; i < size; i++) { page[addr % BLOCK_SIZE + i] = buf[i]; } /* if the array is filled, write it in memory */ if (!((addr + size) % BLOCK_SIZE)) { if (!(disk_access_status(disk_pdrv) & DISK_STATUS_WR_PROTECT)) { LOG_DBG("Disk WRITE Qd %d", (addr/BLOCK_SIZE)); thread_op = THREAD_OP_WRITE_QUEUED; /* write_queued */ defered_wr_sz = size; k_sem_give(&disk_wait_sem); return; } } addr += size; length -= size; csw.DataResidue -= size; if ((!length) || (stage != MSC_PROCESS_CBW)) { csw.Status = (stage == MSC_ERROR) ? CSW_FAILED : CSW_PASSED; sendCSW(); } } static void mass_storage_bulk_out(u8_t ep, enum usb_dc_ep_cb_status_code ep_status) { u32_t bytes_read = 0U; u8_t bo_buf[CONFIG_MASS_STORAGE_BULK_EP_MPS]; ARG_UNUSED(ep_status); usb_ep_read_wait(ep, bo_buf, CONFIG_MASS_STORAGE_BULK_EP_MPS, &bytes_read); switch (stage) { /*the device has to decode the CBW received*/ case MSC_READ_CBW: LOG_DBG("> BO - MSC_READ_CBW"); CBWDecode(bo_buf, bytes_read); break; /*the device has to receive data from the host*/ case MSC_PROCESS_CBW: switch (cbw.CB[0]) { case WRITE10: case WRITE12: /* LOG_DBG("> BO - PROC_CBW WR");*/ memoryWrite(bo_buf, bytes_read); break; case VERIFY10: LOG_DBG("> BO - PROC_CBW VER"); memoryVerify(bo_buf, bytes_read); break; default: LOG_ERR("> BO - PROC_CBW default <<ERROR!!!>>"); break; } break; /*an error has occurred: stall endpoint and send CSW*/ default: LOG_WRN("Stall OUT endpoint, stage: %d", stage); usb_ep_set_stall(ep); csw.Status = CSW_ERROR; sendCSW(); break; } if (thread_op != THREAD_OP_WRITE_QUEUED) { usb_ep_read_continue(ep); } else { LOG_DBG("> BO not clearing NAKs yet"); } } static void thread_memory_write_done(void) { u32_t size = defered_wr_sz; addr += size; length -= size; csw.DataResidue -= size; if ((!length) || (stage != MSC_PROCESS_CBW)) { csw.Status = (stage == MSC_ERROR) ? CSW_FAILED : CSW_PASSED; sendCSW(); } thread_op = THREAD_OP_WRITE_DONE; usb_ep_read_continue(mass_ep_data[MSD_OUT_EP_IDX].ep_addr); } /** * @brief EP Bulk IN handler, used to send data to the Host * * @param ep Endpoint address. * @param ep_status Endpoint status code. * * @return N/A. */ static void mass_storage_bulk_in(u8_t ep, enum usb_dc_ep_cb_status_code ep_status) { ARG_UNUSED(ep_status); ARG_UNUSED(ep); switch (stage) { /*the device has to send data to the host*/ case MSC_PROCESS_CBW: switch (cbw.CB[0]) { case READ10: case READ12: /* LOG_DBG("< BI - PROC_CBW READ"); */ memoryRead(); break; default: LOG_ERR("< BI-PROC_CBW default <<ERROR!!>>"); break; } break; /*the device has to send a CSW*/ case MSC_SEND_CSW: LOG_DBG("< BI - MSC_SEND_CSW"); sendCSW(); break; /*the host has received the CSW -> we wait a CBW*/ case MSC_WAIT_CSW: LOG_DBG("< BI - MSC_WAIT_CSW"); stage = MSC_READ_CBW; break; /*an error has occurred*/ default: LOG_WRN("Stall IN endpoint, stage: %d", stage); usb_ep_set_stall(mass_ep_data[MSD_IN_EP_IDX].ep_addr); sendCSW(); break; } } /** * @brief Callback used to know the USB connection status * * @param status USB device status code. * * @return N/A. */ static void mass_storage_status_cb(struct usb_cfg_data *cfg, enum usb_dc_status_code status, const u8_t *param) { ARG_UNUSED(param); ARG_UNUSED(cfg); /* Check the USB status and do needed action if required */ switch (status) { case USB_DC_ERROR: LOG_DBG("USB device error"); break; case USB_DC_RESET: LOG_DBG("USB device reset detected"); msd_state_machine_reset(); msd_init(); break; case USB_DC_CONNECTED: LOG_DBG("USB device connected"); break; case USB_DC_CONFIGURED: LOG_DBG("USB device configured"); break; case USB_DC_DISCONNECTED: LOG_DBG("USB device disconnected"); break; case USB_DC_SUSPEND: LOG_DBG("USB device supended"); break; case USB_DC_RESUME: LOG_DBG("USB device resumed"); break; case USB_DC_INTERFACE: LOG_DBG("USB interface selected"); break; case USB_DC_SOF: break; case USB_DC_UNKNOWN: default: LOG_DBG("USB unknown state"); break; } } static void mass_interface_config(struct usb_desc_header *head, u8_t bInterfaceNumber) { ARG_UNUSED(head); mass_cfg.if0.bInterfaceNumber = bInterfaceNumber; } /* Configuration of the Mass Storage Device send to the USB Driver */ USBD_CFG_DATA_DEFINE(primary, msd) struct usb_cfg_data mass_storage_config = { .usb_device_description = NULL, .interface_config = mass_interface_config, .interface_descriptor = &mass_cfg.if0, .cb_usb_status = mass_storage_status_cb, .interface = { .class_handler = mass_storage_class_handle_req, .custom_handler = NULL, }, .num_endpoints = ARRAY_SIZE(mass_ep_data), .endpoint = mass_ep_data }; static void mass_thread_main(int arg1, int unused) { ARG_UNUSED(unused); ARG_UNUSED(arg1); while (1) { k_sem_take(&disk_wait_sem, K_FOREVER); LOG_DBG("sem %d", thread_op); switch (thread_op) { case THREAD_OP_READ_QUEUED: if (disk_access_read(disk_pdrv, page, (addr/BLOCK_SIZE), 1)) { LOG_ERR("!! Disk Read Error %d !", addr/BLOCK_SIZE); } thread_memory_read_done(); break; case THREAD_OP_WRITE_QUEUED: if (disk_access_write(disk_pdrv, page, (addr/BLOCK_SIZE), 1)) { LOG_ERR("!!!!! Disk Write Error %d !!!!!", addr/BLOCK_SIZE); } thread_memory_write_done(); break; default: LOG_ERR("XXXXXX thread_op %d ! XXXXX", thread_op); } } } /** * @brief Initialize USB mass storage setup * * This routine is called to reset the USB device controller chip to a * quiescent state. Also it initializes the backing storage and initializes * the mass storage protocol state. * * @param dev device struct. * * @return negative errno code on fatal failure, 0 otherwise */ static int mass_storage_init(struct device *dev) { u32_t block_size = 0U; ARG_UNUSED(dev); if (disk_access_init(disk_pdrv) != 0) { LOG_ERR("Storage init ERROR !!!! - Aborting USB init"); return 0; } if (disk_access_ioctl(disk_pdrv, DISK_IOCTL_GET_SECTOR_COUNT, &block_count)) { LOG_ERR("Unable to get sector count - Aborting USB init"); return 0; } if (disk_access_ioctl(disk_pdrv, DISK_IOCTL_GET_SECTOR_SIZE, &block_size)) { LOG_ERR("Unable to get sector size - Aborting USB init"); return 0; } if (block_size != BLOCK_SIZE) { LOG_ERR("Block Size reported by the storage side is " "different from Mass Storgae Class page Buffer - " "Aborting"); return 0; } LOG_INF("Sect Count %d", block_count); memory_size = block_count * BLOCK_SIZE; LOG_INF("Memory Size %d", memory_size); msd_state_machine_reset(); msd_init(); k_sem_init(&disk_wait_sem, 0, 1); /* Start a thread to offload disk ops */ k_thread_create(&mass_thread_data, mass_thread_stack, DISK_THREAD_STACK_SZ, (k_thread_entry_t)mass_thread_main, NULL, NULL, NULL, DISK_THREAD_PRIO, 0, 0); return 0; } SYS_INIT(mass_storage_init, APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEVICE); |