sys/dev/usb/usb_msctest.c

   1 /* $FreeBSD$ */
   2 /*-
   3  * Copyright (c) 2008,2011 Hans Petter Selasky. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 /*
  28  * The following file contains code that will detect USB autoinstall
  29  * disks.
  30  *
  31  * TODO: Potentially we could add code to automatically detect USB
  32  * mass storage quirks for not supported SCSI commands!
  33  */
  34
  35 #include <sys/stdint.h>
  36 #include <sys/stddef.h>
  37 #include <sys/param.h>
  38 #include <sys/queue.h>
  39 #include <sys/types.h>
  40 #include <sys/systm.h>
  41 #include <sys/kernel.h>
  42 #include <sys/bus.h>
  43 #include <sys/module.h>
  44 #include <sys/lock.h>
  45 #include <sys/mutex.h>
  46 #include <sys/condvar.h>
  47 #include <sys/sysctl.h>
  48 #include <sys/sx.h>
  49 #include <sys/unistd.h>
  50 #include <sys/callout.h>
  51 #include <sys/malloc.h>
  52 #include <sys/priv.h>
  53
  54 #include <dev/usb/usb.h>
  55 #include <dev/usb/usbdi.h>
  56 #include <dev/usb/usbdi_util.h>
  57
  58 #define USB_DEBUG_VAR usb_debug
  59
  60 #include <dev/usb/usb_busdma.h>
  61 #include <dev/usb/usb_process.h>
  62 #include <dev/usb/usb_transfer.h>
  63 #include <dev/usb/usb_msctest.h>
  64 #include <dev/usb/usb_debug.h>
  65 #include <dev/usb/usb_device.h>
  66 #include <dev/usb/usb_request.h>
  67 #include <dev/usb/usb_util.h>
  68 #include <dev/usb/quirk/usb_quirk.h>
  69
  70 enum {
  71         ST_COMMAND,
  72         ST_DATA_RD,
  73         ST_DATA_RD_CS,
  74         ST_DATA_WR,
  75         ST_DATA_WR_CS,
  76         ST_STATUS,
  77         ST_MAX,
  78 };
  79
  80 enum {
  81         DIR_IN,
  82         DIR_OUT,
  83         DIR_NONE,
  84 };
  85
  86 #define SCSI_MAX_LEN    0x100
  87 #define SCSI_INQ_LEN    0x24
  88 #define SCSI_SENSE_LEN  0xFF
  89
  90 static uint8_t scsi_test_unit_ready[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
  91 static uint8_t scsi_inquiry[] = { 0x12, 0x00, 0x00, 0x00, SCSI_INQ_LEN, 0x00 };
  92 static uint8_t scsi_rezero_init[] =     { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
  93 static uint8_t scsi_start_stop_unit[] = { 0x1b, 0x00, 0x00, 0x00, 0x02, 0x00 };
  94 static uint8_t scsi_ztestor_eject[] =   { 0x85, 0x01, 0x01, 0x01, 0x18, 0x01,
  95                                           0x01, 0x01, 0x01, 0x01, 0x00, 0x00 };
  96 static uint8_t scsi_cmotech_eject[] =   { 0xff, 0x52, 0x44, 0x45, 0x56, 0x43,
  97                                           0x48, 0x47 };
  98 static uint8_t scsi_huawei_eject[] =    { 0x11, 0x06, 0x00, 0x00, 0x00, 0x00,
  99                                           0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 100                                           0x00, 0x00, 0x00, 0x00 };
 101 static uint8_t scsi_tct_eject[] =       { 0x06, 0xf5, 0x04, 0x02, 0x52, 0x70 };
 102 static uint8_t scsi_sync_cache[] =      { 0x35, 0x00, 0x00, 0x00, 0x00, 0x00,
 103                                           0x00, 0x00, 0x00, 0x00 };
 104 static uint8_t scsi_request_sense[] =   { 0x03, 0x00, 0x00, 0x00, 0x12, 0x00,
 105                                           0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 106
 107 #define BULK_SIZE               64      /* dummy */
 108 #define ERR_CSW_FAILED          -1
 109
 110 /* Command Block Wrapper */
 111 struct bbb_cbw {
 112         uDWord  dCBWSignature;
 113 #define CBWSIGNATURE    0x43425355
 114         uDWord  dCBWTag;
 115         uDWord  dCBWDataTransferLength;
 116         uByte   bCBWFlags;
 117 #define CBWFLAGS_OUT    0x00
 118 #define CBWFLAGS_IN     0x80
 119         uByte   bCBWLUN;
 120         uByte   bCDBLength;
 121 #define CBWCDBLENGTH    16
 122         uByte   CBWCDB[CBWCDBLENGTH];
 123 } __packed;
 124
 125 /* Command Status Wrapper */
 126 struct bbb_csw {
 127         uDWord  dCSWSignature;
 128 #define CSWSIGNATURE    0x53425355
 129         uDWord  dCSWTag;
 130         uDWord  dCSWDataResidue;
 131         uByte   bCSWStatus;
 132 #define CSWSTATUS_GOOD  0x0
 133 #define CSWSTATUS_FAILED        0x1
 134 #define CSWSTATUS_PHASE 0x2
 135 } __packed;
 136
 137 struct bbb_transfer {
 138         struct mtx mtx;
 139         struct cv cv;
 140         struct bbb_cbw cbw;
 141         struct bbb_csw csw;
 142
 143         struct usb_xfer *xfer[ST_MAX];
 144
 145         uint8_t *data_ptr;
 146
 147         usb_size_t data_len;            /* bytes */
 148         usb_size_t data_rem;            /* bytes */
 149         usb_timeout_t data_timeout;     /* ms */
 150         usb_frlength_t actlen;          /* bytes */
 151
 152         uint8_t cmd_len;                /* bytes */
 153         uint8_t dir;
 154         uint8_t lun;
 155         uint8_t state;
 156         uint8_t status_try;
 157         int     error;
 158
 159         uint8_t buffer[SCSI_MAX_LEN] __aligned(4);
 160 };
 161
 162 static usb_callback_t bbb_command_callback;
 163 static usb_callback_t bbb_data_read_callback;
 164 static usb_callback_t bbb_data_rd_cs_callback;
 165 static usb_callback_t bbb_data_write_callback;
 166 static usb_callback_t bbb_data_wr_cs_callback;
 167 static usb_callback_t bbb_status_callback;
 168
 169 static void     bbb_done(struct bbb_transfer *, int);
 170 static void     bbb_transfer_start(struct bbb_transfer *, uint8_t);
 171 static void     bbb_data_clear_stall_callback(struct usb_xfer *, uint8_t,
 172                     uint8_t);
 173 static int      bbb_command_start(struct bbb_transfer *, uint8_t, uint8_t,
 174                     void *, size_t, void *, size_t, usb_timeout_t);
 175 static struct bbb_transfer *bbb_attach(struct usb_device *, uint8_t);
 176 static void     bbb_detach(struct bbb_transfer *);
 177
 178 static const struct usb_config bbb_config[ST_MAX] = {
 179
 180         [ST_COMMAND] = {
 181                 .type = UE_BULK,
 182                 .endpoint = UE_ADDR_ANY,
 183                 .direction = UE_DIR_OUT,
 184                 .bufsize = sizeof(struct bbb_cbw),
 185                 .flags = {.ext_buffer = 1,},
 186                 .callback = &bbb_command_callback,
 187                 .timeout = 4 * USB_MS_HZ,       /* 4 seconds */
 188         },
 189
 190         [ST_DATA_RD] = {
 191                 .type = UE_BULK,
 192                 .endpoint = UE_ADDR_ANY,
 193                 .direction = UE_DIR_IN,
 194                 .bufsize = BULK_SIZE,
 195                 .flags = {.ext_buffer = 1,.proxy_buffer = 1,.short_xfer_ok = 1,},
 196                 .callback = &bbb_data_read_callback,
 197                 .timeout = 4 * USB_MS_HZ,       /* 4 seconds */
 198         },
 199
 200         [ST_DATA_RD_CS] = {
 201                 .type = UE_CONTROL,
 202                 .endpoint = 0x00,       /* Control pipe */
 203                 .direction = UE_DIR_ANY,
 204                 .bufsize = sizeof(struct usb_device_request),
 205                 .callback = &bbb_data_rd_cs_callback,
 206                 .timeout = 1 * USB_MS_HZ,       /* 1 second  */
 207         },
 208
 209         [ST_DATA_WR] = {
 210                 .type = UE_BULK,
 211                 .endpoint = UE_ADDR_ANY,
 212                 .direction = UE_DIR_OUT,
 213                 .bufsize = BULK_SIZE,
 214                 .flags = {.ext_buffer = 1,.proxy_buffer = 1,},
 215                 .callback = &bbb_data_write_callback,
 216                 .timeout = 4 * USB_MS_HZ,       /* 4 seconds */
 217         },
 218
 219         [ST_DATA_WR_CS] = {
 220                 .type = UE_CONTROL,
 221                 .endpoint = 0x00,       /* Control pipe */
 222                 .direction = UE_DIR_ANY,
 223                 .bufsize = sizeof(struct usb_device_request),
 224                 .callback = &bbb_data_wr_cs_callback,
 225                 .timeout = 1 * USB_MS_HZ,       /* 1 second  */
 226         },
 227
 228         [ST_STATUS] = {
 229                 .type = UE_BULK,
 230                 .endpoint = UE_ADDR_ANY,
 231                 .direction = UE_DIR_IN,
 232                 .bufsize = sizeof(struct bbb_csw),
 233                 .flags = {.ext_buffer = 1,.short_xfer_ok = 1,},
 234                 .callback = &bbb_status_callback,
 235                 .timeout = 1 * USB_MS_HZ,       /* 1 second  */
 236         },
 237 };
 238
 239 static void
 240 bbb_done(struct bbb_transfer *sc, int error)
 241 {
 242
 243         sc->error = error;
 244         sc->state = ST_COMMAND;
 245         sc->status_try = 1;
 246         cv_signal(&sc->cv);
 247 }
 248
 249 static void
 250 bbb_transfer_start(struct bbb_transfer *sc, uint8_t xfer_index)
 251 {
 252         sc->state = xfer_index;
 253         usbd_transfer_start(sc->xfer[xfer_index]);
 254 }
 255
 256 static void
 257 bbb_data_clear_stall_callback(struct usb_xfer *xfer,
 258     uint8_t next_xfer, uint8_t stall_xfer)
 259 {
 260         struct bbb_transfer *sc = usbd_xfer_softc(xfer);
 261
 262         if (usbd_clear_stall_callback(xfer, sc->xfer[stall_xfer])) {
 263                 switch (USB_GET_STATE(xfer)) {
 264                 case USB_ST_SETUP:
 265                 case USB_ST_TRANSFERRED:
 266                         bbb_transfer_start(sc, next_xfer);
 267                         break;
 268                 default:
 269                         bbb_done(sc, USB_ERR_STALLED);
 270                         break;
 271                 }
 272         }
 273 }
 274
 275 static void
 276 bbb_command_callback(struct usb_xfer *xfer, usb_error_t error)
 277 {
 278         struct bbb_transfer *sc = usbd_xfer_softc(xfer);
 279         uint32_t tag;
 280
 281         switch (USB_GET_STATE(xfer)) {
 282         case USB_ST_TRANSFERRED:
 283                 bbb_transfer_start
 284                     (sc, ((sc->dir == DIR_IN) ? ST_DATA_RD :
 285                     (sc->dir == DIR_OUT) ? ST_DATA_WR :
 286                     ST_STATUS));
 287                 break;
 288
 289         case USB_ST_SETUP:
 290                 sc->status_try = 0;
 291                 tag = UGETDW(sc->cbw.dCBWTag) + 1;
 292                 USETDW(sc->cbw.dCBWSignature, CBWSIGNATURE);
 293                 USETDW(sc->cbw.dCBWTag, tag);
 294                 USETDW(sc->cbw.dCBWDataTransferLength, (uint32_t)sc->data_len);
 295                 sc->cbw.bCBWFlags = ((sc->dir == DIR_IN) ? CBWFLAGS_IN : CBWFLAGS_OUT);
 296                 sc->cbw.bCBWLUN = sc->lun;
 297                 sc->cbw.bCDBLength = sc->cmd_len;
 298                 if (sc->cbw.bCDBLength > sizeof(sc->cbw.CBWCDB)) {
 299                         sc->cbw.bCDBLength = sizeof(sc->cbw.CBWCDB);
 300                         DPRINTFN(0, "Truncating long command\n");
 301                 }
 302                 usbd_xfer_set_frame_data(xfer, 0, &sc->cbw, sizeof(sc->cbw));
 303                 usbd_transfer_submit(xfer);
 304                 break;
 305
 306         default:                        /* Error */
 307                 bbb_done(sc, error);
 308                 break;
 309         }
 310 }
 311
 312 static void
 313 bbb_data_read_callback(struct usb_xfer *xfer, usb_error_t error)
 314 {
 315         struct bbb_transfer *sc = usbd_xfer_softc(xfer);
 316         usb_frlength_t max_bulk = usbd_xfer_max_len(xfer);
 317         int actlen, sumlen;
 318
 319         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
 320
 321         switch (USB_GET_STATE(xfer)) {
 322         case USB_ST_TRANSFERRED:
 323                 sc->data_rem -= actlen;
 324                 sc->data_ptr += actlen;
 325                 sc->actlen += actlen;
 326
 327                 if (actlen < sumlen) {
 328                         /* short transfer */
 329                         sc->data_rem = 0;
 330                 }
 331         case USB_ST_SETUP:
 332                 DPRINTF("max_bulk=%d, data_rem=%d\n",
 333                     max_bulk, sc->data_rem);
 334
 335                 if (sc->data_rem == 0) {
 336                         bbb_transfer_start(sc, ST_STATUS);
 337                         break;
 338                 }
 339                 if (max_bulk > sc->data_rem) {
 340                         max_bulk = sc->data_rem;
 341                 }
 342                 usbd_xfer_set_timeout(xfer, sc->data_timeout);
 343                 usbd_xfer_set_frame_data(xfer, 0, sc->data_ptr, max_bulk);
 344                 usbd_transfer_submit(xfer);
 345                 break;
 346
 347         default:                        /* Error */
 348                 if (error == USB_ERR_CANCELLED) {
 349                         bbb_done(sc, error);
 350                 } else {
 351                         bbb_transfer_start(sc, ST_DATA_RD_CS);
 352                 }
 353                 break;
 354         }
 355 }
 356
 357 static void
 358 bbb_data_rd_cs_callback(struct usb_xfer *xfer, usb_error_t error)
 359 {
 360         bbb_data_clear_stall_callback(xfer, ST_STATUS,
 361             ST_DATA_RD);
 362 }
 363
 364 static void
 365 bbb_data_write_callback(struct usb_xfer *xfer, usb_error_t error)
 366 {
 367         struct bbb_transfer *sc = usbd_xfer_softc(xfer);
 368         usb_frlength_t max_bulk = usbd_xfer_max_len(xfer);
 369         int actlen, sumlen;
 370
 371         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
 372
 373         switch (USB_GET_STATE(xfer)) {
 374         case USB_ST_TRANSFERRED:
 375                 sc->data_rem -= actlen;
 376                 sc->data_ptr += actlen;
 377                 sc->actlen += actlen;
 378
 379                 if (actlen < sumlen) {
 380                         /* short transfer */
 381                         sc->data_rem = 0;
 382                 }
 383         case USB_ST_SETUP:
 384                 DPRINTF("max_bulk=%d, data_rem=%d\n",
 385                     max_bulk, sc->data_rem);
 386
 387                 if (sc->data_rem == 0) {
 388                         bbb_transfer_start(sc, ST_STATUS);
 389                         return;
 390                 }
 391                 if (max_bulk > sc->data_rem) {
 392                         max_bulk = sc->data_rem;
 393                 }
 394                 usbd_xfer_set_timeout(xfer, sc->data_timeout);
 395                 usbd_xfer_set_frame_data(xfer, 0, sc->data_ptr, max_bulk);
 396                 usbd_transfer_submit(xfer);
 397                 return;
 398
 399         default:                        /* Error */
 400                 if (error == USB_ERR_CANCELLED) {
 401                         bbb_done(sc, error);
 402                 } else {
 403                         bbb_transfer_start(sc, ST_DATA_WR_CS);
 404                 }
 405                 return;
 406
 407         }
 408 }
 409
 410 static void
 411 bbb_data_wr_cs_callback(struct usb_xfer *xfer, usb_error_t error)
 412 {
 413         bbb_data_clear_stall_callback(xfer, ST_STATUS,
 414             ST_DATA_WR);
 415 }
 416
 417 static void
 418 bbb_status_callback(struct usb_xfer *xfer, usb_error_t error)
 419 {
 420         struct bbb_transfer *sc = usbd_xfer_softc(xfer);
 421         int actlen;
 422         int sumlen;
 423
 424         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
 425
 426         switch (USB_GET_STATE(xfer)) {
 427         case USB_ST_TRANSFERRED:
 428
 429                 /* very simple status check */
 430
 431                 if (actlen < (int)sizeof(sc->csw)) {
 432                         bbb_done(sc, USB_ERR_SHORT_XFER);
 433                 } else if (sc->csw.bCSWStatus == CSWSTATUS_GOOD) {
 434                         bbb_done(sc, 0);        /* success */
 435                 } else {
 436                         bbb_done(sc, ERR_CSW_FAILED);   /* error */
 437                 }
 438                 break;
 439
 440         case USB_ST_SETUP:
 441                 usbd_xfer_set_frame_data(xfer, 0, &sc->csw, sizeof(sc->csw));
 442                 usbd_transfer_submit(xfer);
 443                 break;
 444
 445         default:
 446                 DPRINTF("Failed to read CSW: %s, try %d\n",
 447                     usbd_errstr(error), sc->status_try);
 448
 449                 if (error == USB_ERR_CANCELLED || sc->status_try) {
 450                         bbb_done(sc, error);
 451                 } else {
 452                         sc->status_try = 1;
 453                         bbb_transfer_start(sc, ST_DATA_RD_CS);
 454                 }
 455                 break;
 456         }
 457 }
 458
 459 /*------------------------------------------------------------------------*
 460  *      bbb_command_start - execute a SCSI command synchronously
 461  *
 462  * Return values
 463  * 0: Success
 464  * Else: Failure
 465  *------------------------------------------------------------------------*/
 466 static int
 467 bbb_command_start(struct bbb_transfer *sc, uint8_t dir, uint8_t lun,
 468     void *data_ptr, size_t data_len, void *cmd_ptr, size_t cmd_len,
 469     usb_timeout_t data_timeout)
 470 {
 471         sc->lun = lun;
 472         sc->dir = data_len ? dir : DIR_NONE;
 473         sc->data_ptr = data_ptr;
 474         sc->data_len = data_len;
 475         sc->data_rem = data_len;
 476         sc->data_timeout = (data_timeout + USB_MS_HZ);
 477         sc->actlen = 0;
 478         sc->cmd_len = cmd_len;
 479         memset(&sc->cbw.CBWCDB, 0, sizeof(sc->cbw.CBWCDB));
 480         memcpy(&sc->cbw.CBWCDB, cmd_ptr, cmd_len);
 481         DPRINTFN(1, "SCSI cmd = %*D\n", (int)cmd_len, (char *)sc->cbw.CBWCDB, ":");
 482
 483         mtx_lock(&sc->mtx);
 484         usbd_transfer_start(sc->xfer[sc->state]);
 485
 486         while (usbd_transfer_pending(sc->xfer[sc->state])) {
 487                 cv_wait(&sc->cv, &sc->mtx);
 488         }
 489         mtx_unlock(&sc->mtx);
 490         return (sc->error);
 491 }
 492
 493 static struct bbb_transfer *
 494 bbb_attach(struct usb_device *udev, uint8_t iface_index)
 495 {
 496         struct usb_interface *iface;
 497         struct usb_interface_descriptor *id;
 498         struct bbb_transfer *sc;
 499         usb_error_t err;
 500         uint8_t do_unlock;
 501
 502         /* automatic locking */
 503         if (usbd_enum_is_locked(udev)) {
 504                 do_unlock = 0;
 505         } else {
 506                 do_unlock = 1;
 507                 usbd_enum_lock(udev);
 508         }
 509
 510         /*
 511          * Make sure any driver which is hooked up to this interface,
 512          * like umass is gone:
 513          */
 514         usb_detach_device(udev, iface_index, 0);
 515
 516         if (do_unlock)
 517                 usbd_enum_unlock(udev);
 518
 519         iface = usbd_get_iface(udev, iface_index);
 520         if (iface == NULL)
 521                 return (NULL);
 522
 523         id = iface->idesc;
 524         if (id == NULL || id->bInterfaceClass != UICLASS_MASS)
 525                 return (NULL);
 526
 527         switch (id->bInterfaceSubClass) {
 528         case UISUBCLASS_SCSI:
 529         case UISUBCLASS_UFI:
 530         case UISUBCLASS_SFF8020I:
 531         case UISUBCLASS_SFF8070I:
 532                 break;
 533         default:
 534                 return (NULL);
 535         }
 536
 537         switch (id->bInterfaceProtocol) {
 538         case UIPROTO_MASS_BBB_OLD:
 539         case UIPROTO_MASS_BBB:
 540                 break;
 541         default:
 542                 return (NULL);
 543         }
 544
 545         sc = malloc(sizeof(*sc), M_USB, M_WAITOK | M_ZERO);
 546         mtx_init(&sc->mtx, "USB autoinstall", NULL, MTX_DEF);
 547         cv_init(&sc->cv, "WBBB");
 548
 549         err = usbd_transfer_setup(udev, &iface_index, sc->xfer, bbb_config,
 550             ST_MAX, sc, &sc->mtx);
 551         if (err) {
 552                 bbb_detach(sc);
 553                 return (NULL);
 554         }
 555         return (sc);
 556 }
 557
 558 static void
 559 bbb_detach(struct bbb_transfer *sc)
 560 {
 561         usbd_transfer_unsetup(sc->xfer, ST_MAX);
 562         mtx_destroy(&sc->mtx);
 563         cv_destroy(&sc->cv);
 564         free(sc, M_USB);
 565 }
 566
 567 /*------------------------------------------------------------------------*
 568  *      usb_iface_is_cdrom
 569  *
 570  * Return values:
 571  * 1: This interface is an auto install disk (CD-ROM)
 572  * 0: Not an auto install disk.
 573  *------------------------------------------------------------------------*/
 574 int
 575 usb_iface_is_cdrom(struct usb_device *udev, uint8_t iface_index)
 576 {
 577         struct bbb_transfer *sc;
 578         uint8_t timeout;
 579         uint8_t is_cdrom;
 580         uint8_t sid_type;
 581         int err;
 582
 583         sc = bbb_attach(udev, iface_index);
 584         if (sc == NULL)
 585                 return (0);
 586
 587         is_cdrom = 0;
 588         timeout = 4;    /* tries */
 589         while (--timeout) {
 590                 err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
 591                     SCSI_INQ_LEN, &scsi_inquiry, sizeof(scsi_inquiry),
 592                     USB_MS_HZ);
 593
 594                 if (err == 0 && sc->actlen > 0) {
 595                         sid_type = sc->buffer[0] & 0x1F;
 596                         if (sid_type == 0x05)
 597                                 is_cdrom = 1;
 598                         break;
 599                 } else if (err != ERR_CSW_FAILED)
 600                         break;  /* non retryable error */
 601                 usb_pause_mtx(NULL, hz);
 602         }
 603         bbb_detach(sc);
 604         return (is_cdrom);
 605 }
 606
 607 static uint8_t
 608 usb_msc_get_max_lun(struct usb_device *udev, uint8_t iface_index)
 609 {
 610         struct usb_device_request req;
 611         usb_error_t err;
 612         uint8_t buf = 0;
 613
 614
 615         /* The Get Max Lun command is a class-specific request. */
 616         req.bmRequestType = UT_READ_CLASS_INTERFACE;
 617         req.bRequest = 0xFE;            /* GET_MAX_LUN */
 618         USETW(req.wValue, 0);
 619         req.wIndex[0] = iface_index;
 620         req.wIndex[1] = 0;
 621         USETW(req.wLength, 1);
 622
 623         err = usbd_do_request(udev, NULL, &req, &buf);
 624         if (err)
 625                 buf = 0;
 626
 627         return (buf);
 628 }
 629
 630 usb_error_t
 631 usb_msc_auto_quirk(struct usb_device *udev, uint8_t iface_index)
 632 {
 633         struct bbb_transfer *sc;
 634         uint8_t timeout;
 635         uint8_t is_no_direct;
 636         uint8_t sid_type;
 637         int err;
 638
 639         sc = bbb_attach(udev, iface_index);
 640         if (sc == NULL)
 641                 return (0);
 642
 643         /*
 644          * Some devices need a delay after that the configuration
 645          * value is set to function properly:
 646          */
 647         usb_pause_mtx(NULL, hz);
 648
 649         if (usb_msc_get_max_lun(udev, iface_index) == 0) {
 650                 DPRINTF("Device has only got one LUN.\n");
 651                 usbd_add_dynamic_quirk(udev, UQ_MSC_NO_GETMAXLUN);
 652         }
 653
 654         is_no_direct = 1;
 655         for (timeout = 4; timeout; timeout--) {
 656                 err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
 657                     SCSI_INQ_LEN, &scsi_inquiry, sizeof(scsi_inquiry),
 658                     USB_MS_HZ);
 659
 660                 if (err == 0 && sc->actlen > 0) {
 661                         sid_type = sc->buffer[0] & 0x1F;
 662                         if (sid_type == 0x00)
 663                                 is_no_direct = 0;
 664                         break;
 665                 } else if (err != ERR_CSW_FAILED)
 666                         break;  /* non retryable error */
 667                 usb_pause_mtx(NULL, hz);
 668         }
 669
 670         if (is_no_direct) {
 671                 DPRINTF("Device is not direct access.\n");
 672                 goto done;
 673         }
 674
 675         err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
 676             &scsi_test_unit_ready, sizeof(scsi_test_unit_ready),
 677             USB_MS_HZ);
 678
 679         if (err != 0) {
 680
 681                 if (err != ERR_CSW_FAILED)
 682                         goto error;
 683         }
 684
 685         err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
 686             &scsi_sync_cache, sizeof(scsi_sync_cache),
 687             USB_MS_HZ);
 688
 689         if (err != 0) {
 690
 691                 if (err != ERR_CSW_FAILED)
 692                         goto error;
 693
 694                 DPRINTF("Device doesn't handle synchronize cache\n");
 695
 696                 usbd_add_dynamic_quirk(udev, UQ_MSC_NO_SYNC_CACHE);
 697         }
 698
 699         /* clear sense status of any failed commands on the device */
 700
 701         err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
 702             SCSI_INQ_LEN, &scsi_inquiry, sizeof(scsi_inquiry),
 703             USB_MS_HZ);
 704
 705         DPRINTF("Inquiry = %d\n", err);
 706
 707         if (err != 0) {
 708
 709                 if (err != ERR_CSW_FAILED)
 710                         goto error;
 711         }
 712
 713         err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
 714             SCSI_SENSE_LEN, &scsi_request_sense,
 715             sizeof(scsi_request_sense), USB_MS_HZ);
 716
 717         DPRINTF("Request sense = %d\n", err);
 718
 719         if (err != 0) {
 720
 721                 if (err != ERR_CSW_FAILED)
 722                         goto error;
 723         }
 724
 725 done:
 726         bbb_detach(sc);
 727         return (0);
 728
 729 error:
 730         bbb_detach(sc);
 731
 732         DPRINTF("Device did not respond, enabling all quirks\n");
 733
 734         usbd_add_dynamic_quirk(udev, UQ_MSC_NO_SYNC_CACHE);
 735         usbd_add_dynamic_quirk(udev, UQ_MSC_NO_TEST_UNIT_READY);
 736
 737         /* Need to re-enumerate the device */
 738         usbd_req_re_enumerate(udev, NULL);
 739
 740         return (USB_ERR_STALLED);
 741 }
 742
 743 usb_error_t
 744 usb_msc_eject(struct usb_device *udev, uint8_t iface_index, int method)
 745 {
 746         struct bbb_transfer *sc;
 747         usb_error_t err;
 748
 749         sc = bbb_attach(udev, iface_index);
 750         if (sc == NULL)
 751                 return (USB_ERR_INVAL);
 752
 753         err = 0;
 754         switch (method) {
 755         case MSC_EJECT_STOPUNIT:
 756                 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
 757                     &scsi_test_unit_ready, sizeof(scsi_test_unit_ready),
 758                     USB_MS_HZ);
 759                 DPRINTF("Test unit ready status: %s\n", usbd_errstr(err));
 760                 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
 761                     &scsi_start_stop_unit, sizeof(scsi_start_stop_unit),
 762                     USB_MS_HZ);
 763                 break;
 764         case MSC_EJECT_REZERO:
 765                 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
 766                     &scsi_rezero_init, sizeof(scsi_rezero_init),
 767                     USB_MS_HZ);
 768                 break;
 769         case MSC_EJECT_ZTESTOR:
 770                 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
 771                     &scsi_ztestor_eject, sizeof(scsi_ztestor_eject),
 772                     USB_MS_HZ);
 773                 break;
 774         case MSC_EJECT_CMOTECH:
 775                 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
 776                     &scsi_cmotech_eject, sizeof(scsi_cmotech_eject),
 777                     USB_MS_HZ);
 778                 break;
 779         case MSC_EJECT_HUAWEI:
 780                 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
 781                     &scsi_huawei_eject, sizeof(scsi_huawei_eject),
 782                     USB_MS_HZ);
 783                 break;
 784         case MSC_EJECT_TCT:
 785                 /*
 786                  * TCTMobile needs DIR_IN flag. To get it, we
 787                  * supply a dummy data with the command.
 788                  */
 789                 err = bbb_command_start(sc, DIR_IN, 0, &sc->buffer,
 790                     sizeof(sc->buffer), &scsi_tct_eject,
 791                     sizeof(scsi_tct_eject), USB_MS_HZ);
 792                 break;
 793         default:
 794                 printf("usb_msc_eject: unknown eject method (%d)\n", method);
 795                 break;
 796         }
 797         DPRINTF("Eject CD command status: %s\n", usbd_errstr(err));
 798
 799         bbb_detach(sc);
 800         return (0);
 801 }