sys/dev/usb/storage/umass.c

   1 #include <sys/cdefs.h>
   2 __FBSDID("$FreeBSD$");
   3
   4 /*-
   5  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   6  *
   7  * Copyright (c) 1999 MAEKAWA Masahide <bishop@rr.iij4u.or.jp>,
   8  *                    Nick Hibma <n_hibma@FreeBSD.org>
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  *      $FreeBSD$
  33  *      $NetBSD: umass.c,v 1.28 2000/04/02 23:46:53 augustss Exp $
  34  */
  35
  36 /* Also already merged from NetBSD:
  37  *      $NetBSD: umass.c,v 1.67 2001/11/25 19:05:22 augustss Exp $
  38  *      $NetBSD: umass.c,v 1.90 2002/11/04 19:17:33 pooka Exp $
  39  *      $NetBSD: umass.c,v 1.108 2003/11/07 17:03:25 wiz Exp $
  40  *      $NetBSD: umass.c,v 1.109 2003/12/04 13:57:31 keihan Exp $
  41  */
  42
  43 /*
  44  * Universal Serial Bus Mass Storage Class specs:
  45  * http://www.usb.org/developers/devclass_docs/usb_msc_overview_1.2.pdf
  46  * http://www.usb.org/developers/devclass_docs/usbmassbulk_10.pdf
  47  * http://www.usb.org/developers/devclass_docs/usb_msc_cbi_1.1.pdf
  48  * http://www.usb.org/developers/devclass_docs/usbmass-ufi10.pdf
  49  */
  50
  51 /*
  52  * Ported to NetBSD by Lennart Augustsson <augustss@NetBSD.org>.
  53  * Parts of the code written by Jason R. Thorpe <thorpej@shagadelic.org>.
  54  */
  55
  56 /*
  57  * The driver handles 3 Wire Protocols
  58  * - Command/Bulk/Interrupt (CBI)
  59  * - Command/Bulk/Interrupt with Command Completion Interrupt (CBI with CCI)
  60  * - Mass Storage Bulk-Only (BBB)
  61  *   (BBB refers Bulk/Bulk/Bulk for Command/Data/Status phases)
  62  *
  63  * Over these wire protocols it handles the following command protocols
  64  * - SCSI
  65  * - UFI (floppy command set)
  66  * - 8070i (ATAPI)
  67  *
  68  * UFI and 8070i (ATAPI) are transformed versions of the SCSI command set. The
  69  * sc->sc_transform method is used to convert the commands into the appropriate
  70  * format (if at all necessary). For example, UFI requires all commands to be
  71  * 12 bytes in length amongst other things.
  72  *
  73  * The source code below is marked and can be split into a number of pieces
  74  * (in this order):
  75  *
  76  * - probe/attach/detach
  77  * - generic transfer routines
  78  * - BBB
  79  * - CBI
  80  * - CBI_I (in addition to functions from CBI)
  81  * - CAM (Common Access Method)
  82  * - SCSI
  83  * - UFI
  84  * - 8070i (ATAPI)
  85  *
  86  * The protocols are implemented using a state machine, for the transfers as
  87  * well as for the resets. The state machine is contained in umass_t_*_callback.
  88  * The state machine is started through either umass_command_start() or
  89  * umass_reset().
  90  *
  91  * The reason for doing this is a) CAM performs a lot better this way and b) it
  92  * avoids using tsleep from interrupt context (for example after a failed
  93  * transfer).
  94  */
  95
  96 /*
  97  * The SCSI related part of this driver has been derived from the
  98  * dev/ppbus/vpo.c driver, by Nicolas Souchu (nsouch@FreeBSD.org).
  99  *
 100  * The CAM layer uses so called actions which are messages sent to the host
 101  * adapter for completion. The actions come in through umass_cam_action. The
 102  * appropriate block of routines is called depending on the transport protocol
 103  * in use. When the transfer has finished, these routines call
 104  * umass_cam_cb again to complete the CAM command.
 105  */
 106
 107 #include <sys/stdint.h>
 108 #include <sys/stddef.h>
 109 #include <sys/param.h>
 110 #include <sys/queue.h>
 111 #include <sys/types.h>
 112 #include <sys/systm.h>
 113 #include <sys/kernel.h>
 114 #include <sys/bus.h>
 115 #include <sys/module.h>
 116 #include <sys/lock.h>
 117 #include <sys/mutex.h>
 118 #include <sys/condvar.h>
 119 #include <sys/sysctl.h>
 120 #include <sys/sx.h>
 121 #include <sys/unistd.h>
 122 #include <sys/callout.h>
 123 #include <sys/malloc.h>
 124 #include <sys/priv.h>
 125
 126 #include <dev/usb/usb.h>
 127 #include <dev/usb/usbdi.h>
 128 #include <dev/usb/usbdi_util.h>
 129 #include "usbdevs.h"
 130
 131 #include <dev/usb/quirk/usb_quirk.h>
 132
 133 #include <cam/cam.h>
 134 #include <cam/cam_ccb.h>
 135 #include <cam/cam_sim.h>
 136 #include <cam/cam_xpt_sim.h>
 137 #include <cam/scsi/scsi_all.h>
 138 #include <cam/scsi/scsi_da.h>
 139
 140 #include <cam/cam_periph.h>
 141
 142 #ifdef USB_DEBUG
 143 #define DIF(m, x)                               \
 144   do {                                          \
 145     if (umass_debug & (m)) { x ; }              \
 146   } while (0)
 147
 148 #define DPRINTF(sc, m, fmt, ...)                        \
 149   do {                                                  \
 150     if (umass_debug & (m)) {                            \
 151         printf("%s:%s: " fmt,                           \
 152                (sc) ? (const char *)(sc)->sc_name :     \
 153                (const char *)"umassX",                  \
 154                 __FUNCTION__ ,## __VA_ARGS__);          \
 155     }                                                   \
 156   } while (0)
 157
 158 #define UDMASS_GEN      0x00010000      /* general */
 159 #define UDMASS_SCSI     0x00020000      /* scsi */
 160 #define UDMASS_UFI      0x00040000      /* ufi command set */
 161 #define UDMASS_ATAPI    0x00080000      /* 8070i command set */
 162 #define UDMASS_CMD      (UDMASS_SCSI|UDMASS_UFI|UDMASS_ATAPI)
 163 #define UDMASS_USB      0x00100000      /* USB general */
 164 #define UDMASS_BBB      0x00200000      /* Bulk-Only transfers */
 165 #define UDMASS_CBI      0x00400000      /* CBI transfers */
 166 #define UDMASS_WIRE     (UDMASS_BBB|UDMASS_CBI)
 167 #define UDMASS_ALL      0xffff0000      /* all of the above */
 168 static int umass_debug;
 169 static int umass_throttle;
 170
 171 static SYSCTL_NODE(_hw_usb, OID_AUTO, umass, CTLFLAG_RW, 0, "USB umass");
 172 SYSCTL_INT(_hw_usb_umass, OID_AUTO, debug, CTLFLAG_RWTUN,
 173     &umass_debug, 0, "umass debug level");
 174 SYSCTL_INT(_hw_usb_umass, OID_AUTO, throttle, CTLFLAG_RWTUN,
 175     &umass_throttle, 0, "Forced delay between commands in milliseconds");
 176 #else
 177 #define DIF(...) do { } while (0)
 178 #define DPRINTF(...) do { } while (0)
 179 #endif
 180
 181 #define UMASS_BULK_SIZE (1 << 17)
 182 #define UMASS_CBI_DIAGNOSTIC_CMDLEN 12  /* bytes */
 183 #define UMASS_MAX_CMDLEN MAX(12, CAM_MAX_CDBLEN)        /* bytes */
 184
 185 /* USB transfer definitions */
 186
 187 #define UMASS_T_BBB_RESET1      0       /* Bulk-Only */
 188 #define UMASS_T_BBB_RESET2      1
 189 #define UMASS_T_BBB_RESET3      2
 190 #define UMASS_T_BBB_COMMAND     3
 191 #define UMASS_T_BBB_DATA_READ   4
 192 #define UMASS_T_BBB_DATA_RD_CS  5
 193 #define UMASS_T_BBB_DATA_WRITE  6
 194 #define UMASS_T_BBB_DATA_WR_CS  7
 195 #define UMASS_T_BBB_STATUS      8
 196 #define UMASS_T_BBB_MAX         9
 197
 198 #define UMASS_T_CBI_RESET1      0       /* CBI */
 199 #define UMASS_T_CBI_RESET2      1
 200 #define UMASS_T_CBI_RESET3      2
 201 #define UMASS_T_CBI_COMMAND     3
 202 #define UMASS_T_CBI_DATA_READ   4
 203 #define UMASS_T_CBI_DATA_RD_CS  5
 204 #define UMASS_T_CBI_DATA_WRITE  6
 205 #define UMASS_T_CBI_DATA_WR_CS  7
 206 #define UMASS_T_CBI_STATUS      8
 207 #define UMASS_T_CBI_RESET4      9
 208 #define UMASS_T_CBI_MAX        10
 209
 210 #define UMASS_T_MAX MAX(UMASS_T_CBI_MAX, UMASS_T_BBB_MAX)
 211
 212 /* Generic definitions */
 213
 214 /* Direction for transfer */
 215 #define DIR_NONE        0
 216 #define DIR_IN          1
 217 #define DIR_OUT         2
 218
 219 /* device name */
 220 #define DEVNAME         "umass"
 221 #define DEVNAME_SIM     "umass-sim"
 222
 223 /* Approximate maximum transfer speeds (assumes 33% overhead). */
 224 #define UMASS_FULL_TRANSFER_SPEED       1000
 225 #define UMASS_HIGH_TRANSFER_SPEED       40000
 226 #define UMASS_SUPER_TRANSFER_SPEED      400000
 227 #define UMASS_FLOPPY_TRANSFER_SPEED     20
 228
 229 #define UMASS_TIMEOUT                   5000    /* ms */
 230
 231 /* CAM specific definitions */
 232
 233 #define UMASS_SCSIID_MAX        1       /* maximum number of drives expected */
 234 #define UMASS_SCSIID_HOST       UMASS_SCSIID_MAX
 235
 236 /* Bulk-Only features */
 237
 238 #define UR_BBB_RESET            0xff    /* Bulk-Only reset */
 239 #define UR_BBB_GET_MAX_LUN      0xfe    /* Get maximum lun */
 240
 241 /* Command Block Wrapper */
 242 typedef struct {
 243         uDWord  dCBWSignature;
 244 #define CBWSIGNATURE    0x43425355
 245         uDWord  dCBWTag;
 246         uDWord  dCBWDataTransferLength;
 247         uByte   bCBWFlags;
 248 #define CBWFLAGS_OUT    0x00
 249 #define CBWFLAGS_IN     0x80
 250         uByte   bCBWLUN;
 251         uByte   bCDBLength;
 252 #define CBWCDBLENGTH    16
 253         uByte   CBWCDB[CBWCDBLENGTH];
 254 } __packed umass_bbb_cbw_t;
 255
 256 #define UMASS_BBB_CBW_SIZE      31
 257
 258 /* Command Status Wrapper */
 259 typedef struct {
 260         uDWord  dCSWSignature;
 261 #define CSWSIGNATURE    0x53425355
 262 #define CSWSIGNATURE_IMAGINATION_DBX1   0x43425355
 263 #define CSWSIGNATURE_OLYMPUS_C1 0x55425355
 264         uDWord  dCSWTag;
 265         uDWord  dCSWDataResidue;
 266         uByte   bCSWStatus;
 267 #define CSWSTATUS_GOOD  0x0
 268 #define CSWSTATUS_FAILED        0x1
 269 #define CSWSTATUS_PHASE 0x2
 270 } __packed umass_bbb_csw_t;
 271
 272 #define UMASS_BBB_CSW_SIZE      13
 273
 274 /* CBI features */
 275
 276 #define UR_CBI_ADSC     0x00
 277
 278 typedef union {
 279         struct {
 280                 uint8_t type;
 281 #define IDB_TYPE_CCI            0x00
 282                 uint8_t value;
 283 #define IDB_VALUE_PASS          0x00
 284 #define IDB_VALUE_FAIL          0x01
 285 #define IDB_VALUE_PHASE         0x02
 286 #define IDB_VALUE_PERSISTENT    0x03
 287 #define IDB_VALUE_STATUS_MASK   0x03
 288         } __packed common;
 289
 290         struct {
 291                 uint8_t asc;
 292                 uint8_t ascq;
 293         } __packed ufi;
 294 } __packed umass_cbi_sbl_t;
 295
 296 struct umass_softc;                     /* see below */
 297
 298 typedef void (umass_callback_t)(struct umass_softc *sc, union ccb *ccb,
 299         uint32_t residue, uint8_t status);
 300
 301 #define STATUS_CMD_OK           0       /* everything ok */
 302 #define STATUS_CMD_UNKNOWN      1       /* will have to fetch sense */
 303 #define STATUS_CMD_FAILED       2       /* transfer was ok, command failed */
 304 #define STATUS_WIRE_FAILED      3       /* couldn't even get command across */
 305
 306 typedef uint8_t (umass_transform_t)(struct umass_softc *sc, uint8_t *cmd_ptr,
 307         uint8_t cmd_len);
 308
 309 /* Wire and command protocol */
 310 #define UMASS_PROTO_BBB         0x0001  /* USB wire protocol */
 311 #define UMASS_PROTO_CBI         0x0002
 312 #define UMASS_PROTO_CBI_I       0x0004
 313 #define UMASS_PROTO_WIRE        0x00ff  /* USB wire protocol mask */
 314 #define UMASS_PROTO_SCSI        0x0100  /* command protocol */
 315 #define UMASS_PROTO_ATAPI       0x0200
 316 #define UMASS_PROTO_UFI         0x0400
 317 #define UMASS_PROTO_RBC         0x0800
 318 #define UMASS_PROTO_COMMAND     0xff00  /* command protocol mask */
 319
 320 /* Device specific quirks */
 321 #define NO_QUIRKS               0x0000
 322         /*
 323          * The drive does not support Test Unit Ready. Convert to Start Unit
 324          */
 325 #define NO_TEST_UNIT_READY      0x0001
 326         /*
 327          * The drive does not reset the Unit Attention state after REQUEST
 328          * SENSE has been sent. The INQUIRY command does not reset the UA
 329          * either, and so CAM runs in circles trying to retrieve the initial
 330          * INQUIRY data.
 331          */
 332 #define RS_NO_CLEAR_UA          0x0002
 333         /* The drive does not support START STOP.  */
 334 #define NO_START_STOP           0x0004
 335         /* Don't ask for full inquiry data (255b).  */
 336 #define FORCE_SHORT_INQUIRY     0x0008
 337         /* Needs to be initialised the Shuttle way */
 338 #define SHUTTLE_INIT            0x0010
 339         /* Drive needs to be switched to alternate iface 1 */
 340 #define ALT_IFACE_1             0x0020
 341         /* Drive does not do 1Mb/s, but just floppy speeds (20kb/s) */
 342 #define FLOPPY_SPEED            0x0040
 343         /* The device can't count and gets the residue of transfers wrong */
 344 #define IGNORE_RESIDUE          0x0080
 345         /* No GetMaxLun call */
 346 #define NO_GETMAXLUN            0x0100
 347         /* The device uses a weird CSWSIGNATURE. */
 348 #define WRONG_CSWSIG            0x0200
 349         /* Device cannot handle INQUIRY so fake a generic response */
 350 #define NO_INQUIRY              0x0400
 351         /* Device cannot handle INQUIRY EVPD, return CHECK CONDITION */
 352 #define NO_INQUIRY_EVPD         0x0800
 353         /* Pad all RBC requests to 12 bytes. */
 354 #define RBC_PAD_TO_12           0x1000
 355         /*
 356          * Device reports number of sectors from READ_CAPACITY, not max
 357          * sector number.
 358          */
 359 #define READ_CAPACITY_OFFBY1    0x2000
 360         /*
 361          * Device cannot handle a SCSI synchronize cache command.  Normally
 362          * this quirk would be handled in the cam layer, but for IDE bridges
 363          * we need to associate the quirk with the bridge and not the
 364          * underlying disk device.  This is handled by faking a success
 365          * result.
 366          */
 367 #define NO_SYNCHRONIZE_CACHE    0x4000
 368         /* Device does not support 'PREVENT/ALLOW MEDIUM REMOVAL'. */
 369 #define NO_PREVENT_ALLOW        0x8000
 370
 371 struct umass_softc {
 372
 373         struct scsi_sense cam_scsi_sense;
 374         struct scsi_test_unit_ready cam_scsi_test_unit_ready;
 375         struct mtx sc_mtx;
 376         struct {
 377                 uint8_t *data_ptr;
 378                 union ccb *ccb;
 379                 umass_callback_t *callback;
 380
 381                 uint32_t data_len;      /* bytes */
 382                 uint32_t data_rem;      /* bytes */
 383                 uint32_t data_timeout;  /* ms */
 384                 uint32_t actlen;        /* bytes */
 385
 386                 uint8_t cmd_data[UMASS_MAX_CMDLEN];
 387                 uint8_t cmd_len;        /* bytes */
 388                 uint8_t dir;
 389                 uint8_t lun;
 390         }       sc_transfer;
 391
 392         /* Bulk specific variables for transfers in progress */
 393         umass_bbb_cbw_t cbw;            /* command block wrapper */
 394         umass_bbb_csw_t csw;            /* command status wrapper */
 395
 396         /* CBI specific variables for transfers in progress */
 397         umass_cbi_sbl_t sbl;            /* status block */
 398
 399         device_t sc_dev;
 400         struct usb_device *sc_udev;
 401         struct cam_sim *sc_sim;         /* SCSI Interface Module */
 402         struct usb_xfer *sc_xfer[UMASS_T_MAX];
 403
 404         /*
 405          * The command transform function is used to convert the SCSI
 406          * commands into their derivatives, like UFI, ATAPI, and friends.
 407          */
 408         umass_transform_t *sc_transform;
 409
 410         uint32_t sc_unit;
 411         uint32_t sc_quirks;             /* they got it almost right */
 412         uint32_t sc_proto;              /* wire and cmd protocol */
 413
 414         uint8_t sc_name[16];
 415         uint8_t sc_iface_no;            /* interface number */
 416         uint8_t sc_maxlun;              /* maximum LUN number, inclusive */
 417         uint8_t sc_last_xfer_index;
 418         uint8_t sc_status_try;
 419 };
 420
 421 struct umass_probe_proto {
 422         uint32_t quirks;
 423         uint32_t proto;
 424
 425         int     error;
 426 };
 427
 428 /* prototypes */
 429
 430 static device_probe_t umass_probe;
 431 static device_attach_t umass_attach;
 432 static device_detach_t umass_detach;
 433
 434 static usb_callback_t umass_tr_error;
 435 static usb_callback_t umass_t_bbb_reset1_callback;
 436 static usb_callback_t umass_t_bbb_reset2_callback;
 437 static usb_callback_t umass_t_bbb_reset3_callback;
 438 static usb_callback_t umass_t_bbb_command_callback;
 439 static usb_callback_t umass_t_bbb_data_read_callback;
 440 static usb_callback_t umass_t_bbb_data_rd_cs_callback;
 441 static usb_callback_t umass_t_bbb_data_write_callback;
 442 static usb_callback_t umass_t_bbb_data_wr_cs_callback;
 443 static usb_callback_t umass_t_bbb_status_callback;
 444 static usb_callback_t umass_t_cbi_reset1_callback;
 445 static usb_callback_t umass_t_cbi_reset2_callback;
 446 static usb_callback_t umass_t_cbi_reset3_callback;
 447 static usb_callback_t umass_t_cbi_reset4_callback;
 448 static usb_callback_t umass_t_cbi_command_callback;
 449 static usb_callback_t umass_t_cbi_data_read_callback;
 450 static usb_callback_t umass_t_cbi_data_rd_cs_callback;
 451 static usb_callback_t umass_t_cbi_data_write_callback;
 452 static usb_callback_t umass_t_cbi_data_wr_cs_callback;
 453 static usb_callback_t umass_t_cbi_status_callback;
 454
 455 static void     umass_cancel_ccb(struct umass_softc *);
 456 static void     umass_init_shuttle(struct umass_softc *);
 457 static void     umass_reset(struct umass_softc *);
 458 static void     umass_t_bbb_data_clear_stall_callback(struct usb_xfer *,
 459                     uint8_t, uint8_t, usb_error_t);
 460 static void     umass_command_start(struct umass_softc *, uint8_t, void *,
 461                     uint32_t, uint32_t, umass_callback_t *, union ccb *);
 462 static uint8_t  umass_bbb_get_max_lun(struct umass_softc *);
 463 static void     umass_cbi_start_status(struct umass_softc *);
 464 static void     umass_t_cbi_data_clear_stall_callback(struct usb_xfer *,
 465                     uint8_t, uint8_t, usb_error_t);
 466 static int      umass_cam_attach_sim(struct umass_softc *);
 467 static void     umass_cam_attach(struct umass_softc *);
 468 static void     umass_cam_detach_sim(struct umass_softc *);
 469 static void     umass_cam_action(struct cam_sim *, union ccb *);
 470 static void     umass_cam_poll(struct cam_sim *);
 471 static void     umass_cam_cb(struct umass_softc *, union ccb *, uint32_t,
 472                     uint8_t);
 473 static void     umass_cam_sense_cb(struct umass_softc *, union ccb *, uint32_t,
 474                     uint8_t);
 475 static void     umass_cam_quirk_cb(struct umass_softc *, union ccb *, uint32_t,
 476                     uint8_t);
 477 static uint8_t  umass_scsi_transform(struct umass_softc *, uint8_t *, uint8_t);
 478 static uint8_t  umass_rbc_transform(struct umass_softc *, uint8_t *, uint8_t);
 479 static uint8_t  umass_ufi_transform(struct umass_softc *, uint8_t *, uint8_t);
 480 static uint8_t  umass_atapi_transform(struct umass_softc *, uint8_t *,
 481                     uint8_t);
 482 static uint8_t  umass_no_transform(struct umass_softc *, uint8_t *, uint8_t);
 483 static uint8_t  umass_std_transform(struct umass_softc *, union ccb *, uint8_t
 484                     *, uint8_t);
 485
 486 #ifdef USB_DEBUG
 487 static void     umass_bbb_dump_cbw(struct umass_softc *, umass_bbb_cbw_t *);
 488 static void     umass_bbb_dump_csw(struct umass_softc *, umass_bbb_csw_t *);
 489 static void     umass_cbi_dump_cmd(struct umass_softc *, void *, uint8_t);
 490 static void     umass_dump_buffer(struct umass_softc *, uint8_t *, uint32_t,
 491                     uint32_t);
 492 #endif
 493
 494 static struct usb_config umass_bbb_config[UMASS_T_BBB_MAX] = {
 495
 496         [UMASS_T_BBB_RESET1] = {
 497                 .type = UE_CONTROL,
 498                 .endpoint = 0x00,       /* Control pipe */
 499                 .direction = UE_DIR_ANY,
 500                 .bufsize = sizeof(struct usb_device_request),
 501                 .callback = &umass_t_bbb_reset1_callback,
 502                 .timeout = 5000,        /* 5 seconds */
 503                 .interval = 500,        /* 500 milliseconds */
 504         },
 505
 506         [UMASS_T_BBB_RESET2] = {
 507                 .type = UE_CONTROL,
 508                 .endpoint = 0x00,       /* Control pipe */
 509                 .direction = UE_DIR_ANY,
 510                 .bufsize = sizeof(struct usb_device_request),
 511                 .callback = &umass_t_bbb_reset2_callback,
 512                 .timeout = 5000,        /* 5 seconds */
 513                 .interval = 50, /* 50 milliseconds */
 514         },
 515
 516         [UMASS_T_BBB_RESET3] = {
 517                 .type = UE_CONTROL,
 518                 .endpoint = 0x00,       /* Control pipe */
 519                 .direction = UE_DIR_ANY,
 520                 .bufsize = sizeof(struct usb_device_request),
 521                 .callback = &umass_t_bbb_reset3_callback,
 522                 .timeout = 5000,        /* 5 seconds */
 523                 .interval = 50, /* 50 milliseconds */
 524         },
 525
 526         [UMASS_T_BBB_COMMAND] = {
 527                 .type = UE_BULK,
 528                 .endpoint = UE_ADDR_ANY,
 529                 .direction = UE_DIR_OUT,
 530                 .bufsize = sizeof(umass_bbb_cbw_t),
 531                 .callback = &umass_t_bbb_command_callback,
 532                 .timeout = 5000,        /* 5 seconds */
 533         },
 534
 535         [UMASS_T_BBB_DATA_READ] = {
 536                 .type = UE_BULK,
 537                 .endpoint = UE_ADDR_ANY,
 538                 .direction = UE_DIR_IN,
 539                 .bufsize = UMASS_BULK_SIZE,
 540                 .flags = {.proxy_buffer = 1,.short_xfer_ok = 1,.ext_buffer=1,},
 541                 .callback = &umass_t_bbb_data_read_callback,
 542                 .timeout = 0,   /* overwritten later */
 543         },
 544
 545         [UMASS_T_BBB_DATA_RD_CS] = {
 546                 .type = UE_CONTROL,
 547                 .endpoint = 0x00,       /* Control pipe */
 548                 .direction = UE_DIR_ANY,
 549                 .bufsize = sizeof(struct usb_device_request),
 550                 .callback = &umass_t_bbb_data_rd_cs_callback,
 551                 .timeout = 5000,        /* 5 seconds */
 552         },
 553
 554         [UMASS_T_BBB_DATA_WRITE] = {
 555                 .type = UE_BULK,
 556                 .endpoint = UE_ADDR_ANY,
 557                 .direction = UE_DIR_OUT,
 558                 .bufsize = UMASS_BULK_SIZE,
 559                 .flags = {.proxy_buffer = 1,.short_xfer_ok = 1,.ext_buffer=1,},
 560                 .callback = &umass_t_bbb_data_write_callback,
 561                 .timeout = 0,   /* overwritten later */
 562         },
 563
 564         [UMASS_T_BBB_DATA_WR_CS] = {
 565                 .type = UE_CONTROL,
 566                 .endpoint = 0x00,       /* Control pipe */
 567                 .direction = UE_DIR_ANY,
 568                 .bufsize = sizeof(struct usb_device_request),
 569                 .callback = &umass_t_bbb_data_wr_cs_callback,
 570                 .timeout = 5000,        /* 5 seconds */
 571         },
 572
 573         [UMASS_T_BBB_STATUS] = {
 574                 .type = UE_BULK,
 575                 .endpoint = UE_ADDR_ANY,
 576                 .direction = UE_DIR_IN,
 577                 .bufsize = sizeof(umass_bbb_csw_t),
 578                 .flags = {.short_xfer_ok = 1,},
 579                 .callback = &umass_t_bbb_status_callback,
 580                 .timeout = 5000,        /* ms */
 581         },
 582 };
 583
 584 static struct usb_config umass_cbi_config[UMASS_T_CBI_MAX] = {
 585
 586         [UMASS_T_CBI_RESET1] = {
 587                 .type = UE_CONTROL,
 588                 .endpoint = 0x00,       /* Control pipe */
 589                 .direction = UE_DIR_ANY,
 590                 .bufsize = (sizeof(struct usb_device_request) +
 591                     UMASS_CBI_DIAGNOSTIC_CMDLEN),
 592                 .callback = &umass_t_cbi_reset1_callback,
 593                 .timeout = 5000,        /* 5 seconds */
 594                 .interval = 500,        /* 500 milliseconds */
 595         },
 596
 597         [UMASS_T_CBI_RESET2] = {
 598                 .type = UE_CONTROL,
 599                 .endpoint = 0x00,       /* Control pipe */
 600                 .direction = UE_DIR_ANY,
 601                 .bufsize = sizeof(struct usb_device_request),
 602                 .callback = &umass_t_cbi_reset2_callback,
 603                 .timeout = 5000,        /* 5 seconds */
 604                 .interval = 50, /* 50 milliseconds */
 605         },
 606
 607         [UMASS_T_CBI_RESET3] = {
 608                 .type = UE_CONTROL,
 609                 .endpoint = 0x00,       /* Control pipe */
 610                 .direction = UE_DIR_ANY,
 611                 .bufsize = sizeof(struct usb_device_request),
 612                 .callback = &umass_t_cbi_reset3_callback,
 613                 .timeout = 5000,        /* 5 seconds */
 614                 .interval = 50, /* 50 milliseconds */
 615         },
 616
 617         [UMASS_T_CBI_COMMAND] = {
 618                 .type = UE_CONTROL,
 619                 .endpoint = 0x00,       /* Control pipe */
 620                 .direction = UE_DIR_ANY,
 621                 .bufsize = (sizeof(struct usb_device_request) +
 622                     UMASS_MAX_CMDLEN),
 623                 .callback = &umass_t_cbi_command_callback,
 624                 .timeout = 5000,        /* 5 seconds */
 625         },
 626
 627         [UMASS_T_CBI_DATA_READ] = {
 628                 .type = UE_BULK,
 629                 .endpoint = UE_ADDR_ANY,
 630                 .direction = UE_DIR_IN,
 631                 .bufsize = UMASS_BULK_SIZE,
 632                 .flags = {.proxy_buffer = 1,.short_xfer_ok = 1,.ext_buffer=1,},
 633                 .callback = &umass_t_cbi_data_read_callback,
 634                 .timeout = 0,   /* overwritten later */
 635         },
 636
 637         [UMASS_T_CBI_DATA_RD_CS] = {
 638                 .type = UE_CONTROL,
 639                 .endpoint = 0x00,       /* Control pipe */
 640                 .direction = UE_DIR_ANY,
 641                 .bufsize = sizeof(struct usb_device_request),
 642                 .callback = &umass_t_cbi_data_rd_cs_callback,
 643                 .timeout = 5000,        /* 5 seconds */
 644         },
 645
 646         [UMASS_T_CBI_DATA_WRITE] = {
 647                 .type = UE_BULK,
 648                 .endpoint = UE_ADDR_ANY,
 649                 .direction = UE_DIR_OUT,
 650                 .bufsize = UMASS_BULK_SIZE,
 651                 .flags = {.proxy_buffer = 1,.short_xfer_ok = 1,.ext_buffer=1,},
 652                 .callback = &umass_t_cbi_data_write_callback,
 653                 .timeout = 0,   /* overwritten later */
 654         },
 655
 656         [UMASS_T_CBI_DATA_WR_CS] = {
 657                 .type = UE_CONTROL,
 658                 .endpoint = 0x00,       /* Control pipe */
 659                 .direction = UE_DIR_ANY,
 660                 .bufsize = sizeof(struct usb_device_request),
 661                 .callback = &umass_t_cbi_data_wr_cs_callback,
 662                 .timeout = 5000,        /* 5 seconds */
 663         },
 664
 665         [UMASS_T_CBI_STATUS] = {
 666                 .type = UE_INTERRUPT,
 667                 .endpoint = UE_ADDR_ANY,
 668                 .direction = UE_DIR_IN,
 669                 .flags = {.short_xfer_ok = 1,.no_pipe_ok = 1,},
 670                 .bufsize = sizeof(umass_cbi_sbl_t),
 671                 .callback = &umass_t_cbi_status_callback,
 672                 .timeout = 5000,        /* ms */
 673         },
 674
 675         [UMASS_T_CBI_RESET4] = {
 676                 .type = UE_CONTROL,
 677                 .endpoint = 0x00,       /* Control pipe */
 678                 .direction = UE_DIR_ANY,
 679                 .bufsize = sizeof(struct usb_device_request),
 680                 .callback = &umass_t_cbi_reset4_callback,
 681                 .timeout = 5000,        /* ms */
 682         },
 683 };
 684
 685 /* If device cannot return valid inquiry data, fake it */
 686 static const uint8_t fake_inq_data[SHORT_INQUIRY_LENGTH] = {
 687         0, /* removable */ 0x80, SCSI_REV_2, SCSI_REV_2,
 688          /* additional_length */ 31, 0, 0, 0
 689 };
 690
 691 #define UFI_COMMAND_LENGTH      12      /* UFI commands are always 12 bytes */
 692 #define ATAPI_COMMAND_LENGTH    12      /* ATAPI commands are always 12 bytes */
 693
 694 static devclass_t umass_devclass;
 695
 696 static device_method_t umass_methods[] = {
 697         /* Device interface */
 698         DEVMETHOD(device_probe, umass_probe),
 699         DEVMETHOD(device_attach, umass_attach),
 700         DEVMETHOD(device_detach, umass_detach),
 701
 702         DEVMETHOD_END
 703 };
 704
 705 static driver_t umass_driver = {
 706         .name = "umass",
 707         .methods = umass_methods,
 708         .size = sizeof(struct umass_softc),
 709 };
 710
 711 static const STRUCT_USB_HOST_ID __used umass_devs[] = {
 712         /* generic mass storage class */
 713         {USB_IFACE_CLASS(UICLASS_MASS),},
 714 };
 715
 716 DRIVER_MODULE(umass, uhub, umass_driver, umass_devclass, NULL, 0);
 717 MODULE_DEPEND(umass, usb, 1, 1, 1);
 718 MODULE_DEPEND(umass, cam, 1, 1, 1);
 719 MODULE_VERSION(umass, 1);
 720 USB_PNP_HOST_INFO(umass_devs);
 721
 722 /*
 723  * USB device probe/attach/detach
 724  */
 725
 726 static uint16_t
 727 umass_get_proto(struct usb_interface *iface)
 728 {
 729         struct usb_interface_descriptor *id;
 730         uint16_t retval;
 731
 732         retval = 0;
 733
 734         /* Check for a standards compliant device */
 735         id = usbd_get_interface_descriptor(iface);
 736         if ((id == NULL) ||
 737             (id->bInterfaceClass != UICLASS_MASS)) {
 738                 goto done;
 739         }
 740         switch (id->bInterfaceSubClass) {
 741         case UISUBCLASS_SCSI:
 742                 retval |= UMASS_PROTO_SCSI;
 743                 break;
 744         case UISUBCLASS_UFI:
 745                 retval |= UMASS_PROTO_UFI;
 746                 break;
 747         case UISUBCLASS_RBC:
 748                 retval |= UMASS_PROTO_RBC;
 749                 break;
 750         case UISUBCLASS_SFF8020I:
 751         case UISUBCLASS_SFF8070I:
 752                 retval |= UMASS_PROTO_ATAPI;
 753                 break;
 754         default:
 755                 goto done;
 756         }
 757
 758         switch (id->bInterfaceProtocol) {
 759         case UIPROTO_MASS_CBI:
 760                 retval |= UMASS_PROTO_CBI;
 761                 break;
 762         case UIPROTO_MASS_CBI_I:
 763                 retval |= UMASS_PROTO_CBI_I;
 764                 break;
 765         case UIPROTO_MASS_BBB_OLD:
 766         case UIPROTO_MASS_BBB:
 767                 retval |= UMASS_PROTO_BBB;
 768                 break;
 769         default:
 770                 goto done;
 771         }
 772 done:
 773         return (retval);
 774 }
 775
 776 /*
 777  * Match the device we are seeing with the devices supported.
 778  */
 779 static struct umass_probe_proto
 780 umass_probe_proto(device_t dev, struct usb_attach_arg *uaa)
 781 {
 782         struct umass_probe_proto ret;
 783         uint32_t quirks = NO_QUIRKS;
 784         uint32_t proto = umass_get_proto(uaa->iface);
 785
 786         memset(&ret, 0, sizeof(ret));
 787         ret.error = BUS_PROBE_GENERIC;
 788
 789         /* Search for protocol enforcement */
 790
 791         if (usb_test_quirk(uaa, UQ_MSC_FORCE_WIRE_BBB)) {
 792                 proto &= ~UMASS_PROTO_WIRE;
 793                 proto |= UMASS_PROTO_BBB;
 794         } else if (usb_test_quirk(uaa, UQ_MSC_FORCE_WIRE_CBI)) {
 795                 proto &= ~UMASS_PROTO_WIRE;
 796                 proto |= UMASS_PROTO_CBI;
 797         } else if (usb_test_quirk(uaa, UQ_MSC_FORCE_WIRE_CBI_I)) {
 798                 proto &= ~UMASS_PROTO_WIRE;
 799                 proto |= UMASS_PROTO_CBI_I;
 800         }
 801
 802         if (usb_test_quirk(uaa, UQ_MSC_FORCE_PROTO_SCSI)) {
 803                 proto &= ~UMASS_PROTO_COMMAND;
 804                 proto |= UMASS_PROTO_SCSI;
 805         } else if (usb_test_quirk(uaa, UQ_MSC_FORCE_PROTO_ATAPI)) {
 806                 proto &= ~UMASS_PROTO_COMMAND;
 807                 proto |= UMASS_PROTO_ATAPI;
 808         } else if (usb_test_quirk(uaa, UQ_MSC_FORCE_PROTO_UFI)) {
 809                 proto &= ~UMASS_PROTO_COMMAND;
 810                 proto |= UMASS_PROTO_UFI;
 811         } else if (usb_test_quirk(uaa, UQ_MSC_FORCE_PROTO_RBC)) {
 812                 proto &= ~UMASS_PROTO_COMMAND;
 813                 proto |= UMASS_PROTO_RBC;
 814         }
 815
 816         /* Check if the protocol is invalid */
 817
 818         if ((proto & UMASS_PROTO_COMMAND) == 0) {
 819                 ret.error = ENXIO;
 820                 goto done;
 821         }
 822
 823         if ((proto & UMASS_PROTO_WIRE) == 0) {
 824                 ret.error = ENXIO;
 825                 goto done;
 826         }
 827
 828         /* Search for quirks */
 829
 830         if (usb_test_quirk(uaa, UQ_MSC_NO_TEST_UNIT_READY))
 831                 quirks |= NO_TEST_UNIT_READY;
 832         if (usb_test_quirk(uaa, UQ_MSC_NO_RS_CLEAR_UA))
 833                 quirks |= RS_NO_CLEAR_UA;
 834         if (usb_test_quirk(uaa, UQ_MSC_NO_START_STOP))
 835                 quirks |= NO_START_STOP;
 836         if (usb_test_quirk(uaa, UQ_MSC_NO_GETMAXLUN))
 837                 quirks |= NO_GETMAXLUN;
 838         if (usb_test_quirk(uaa, UQ_MSC_NO_INQUIRY))
 839                 quirks |= NO_INQUIRY;
 840         if (usb_test_quirk(uaa, UQ_MSC_NO_INQUIRY_EVPD))
 841                 quirks |= NO_INQUIRY_EVPD;
 842         if (usb_test_quirk(uaa, UQ_MSC_NO_PREVENT_ALLOW))
 843                 quirks |= NO_PREVENT_ALLOW;
 844         if (usb_test_quirk(uaa, UQ_MSC_NO_SYNC_CACHE))
 845                 quirks |= NO_SYNCHRONIZE_CACHE;
 846         if (usb_test_quirk(uaa, UQ_MSC_SHUTTLE_INIT))
 847                 quirks |= SHUTTLE_INIT;
 848         if (usb_test_quirk(uaa, UQ_MSC_ALT_IFACE_1))
 849                 quirks |= ALT_IFACE_1;
 850         if (usb_test_quirk(uaa, UQ_MSC_FLOPPY_SPEED))
 851                 quirks |= FLOPPY_SPEED;
 852         if (usb_test_quirk(uaa, UQ_MSC_IGNORE_RESIDUE))
 853                 quirks |= IGNORE_RESIDUE;
 854         if (usb_test_quirk(uaa, UQ_MSC_WRONG_CSWSIG))
 855                 quirks |= WRONG_CSWSIG;
 856         if (usb_test_quirk(uaa, UQ_MSC_RBC_PAD_TO_12))
 857                 quirks |= RBC_PAD_TO_12;
 858         if (usb_test_quirk(uaa, UQ_MSC_READ_CAP_OFFBY1))
 859                 quirks |= READ_CAPACITY_OFFBY1;
 860         if (usb_test_quirk(uaa, UQ_MSC_FORCE_SHORT_INQ))
 861                 quirks |= FORCE_SHORT_INQUIRY;
 862
 863 done:
 864         ret.quirks = quirks;
 865         ret.proto = proto;
 866         return (ret);
 867 }
 868
 869 static int
 870 umass_probe(device_t dev)
 871 {
 872         struct usb_attach_arg *uaa = device_get_ivars(dev);
 873         struct umass_probe_proto temp;
 874
 875         if (uaa->usb_mode != USB_MODE_HOST) {
 876                 return (ENXIO);
 877         }
 878         temp = umass_probe_proto(dev, uaa);
 879
 880         return (temp.error);
 881 }
 882
 883 static int
 884 umass_attach(device_t dev)
 885 {
 886         struct umass_softc *sc = device_get_softc(dev);
 887         struct usb_attach_arg *uaa = device_get_ivars(dev);
 888         struct umass_probe_proto temp = umass_probe_proto(dev, uaa);
 889         struct usb_interface_descriptor *id;
 890         int err;
 891
 892         /*
 893          * NOTE: the softc struct is cleared in device_set_driver.
 894          * We can safely call umass_detach without specifically
 895          * initializing the struct.
 896          */
 897
 898         sc->sc_dev = dev;
 899         sc->sc_udev = uaa->device;
 900         sc->sc_proto = temp.proto;
 901         sc->sc_quirks = temp.quirks;
 902         sc->sc_unit = device_get_unit(dev);
 903
 904         snprintf(sc->sc_name, sizeof(sc->sc_name),
 905             "%s", device_get_nameunit(dev));
 906
 907         device_set_usb_desc(dev);
 908
 909         mtx_init(&sc->sc_mtx, device_get_nameunit(dev),
 910             NULL, MTX_DEF | MTX_RECURSE);
 911
 912         /* get interface index */
 913
 914         id = usbd_get_interface_descriptor(uaa->iface);
 915         if (id == NULL) {
 916                 device_printf(dev, "failed to get "
 917                     "interface number\n");
 918                 goto detach;
 919         }
 920         sc->sc_iface_no = id->bInterfaceNumber;
 921
 922 #ifdef USB_DEBUG
 923         device_printf(dev, " ");
 924
 925         switch (sc->sc_proto & UMASS_PROTO_COMMAND) {
 926         case UMASS_PROTO_SCSI:
 927                 printf("SCSI");
 928                 break;
 929         case UMASS_PROTO_ATAPI:
 930                 printf("8070i (ATAPI)");
 931                 break;
 932         case UMASS_PROTO_UFI:
 933                 printf("UFI");
 934                 break;
 935         case UMASS_PROTO_RBC:
 936                 printf("RBC");
 937                 break;
 938         default:
 939                 printf("(unknown 0x%02x)",
 940                     sc->sc_proto & UMASS_PROTO_COMMAND);
 941                 break;
 942         }
 943
 944         printf(" over ");
 945
 946         switch (sc->sc_proto & UMASS_PROTO_WIRE) {
 947         case UMASS_PROTO_BBB:
 948                 printf("Bulk-Only");
 949                 break;
 950         case UMASS_PROTO_CBI:           /* uses Comand/Bulk pipes */
 951                 printf("CBI");
 952                 break;
 953         case UMASS_PROTO_CBI_I: /* uses Comand/Bulk/Interrupt pipes */
 954                 printf("CBI with CCI");
 955                 break;
 956         default:
 957                 printf("(unknown 0x%02x)",
 958                     sc->sc_proto & UMASS_PROTO_WIRE);
 959         }
 960
 961         printf("; quirks = 0x%04x\n", sc->sc_quirks);
 962 #endif
 963
 964         if (sc->sc_quirks & ALT_IFACE_1) {
 965                 err = usbd_set_alt_interface_index
 966                     (uaa->device, uaa->info.bIfaceIndex, 1);
 967
 968                 if (err) {
 969                         DPRINTF(sc, UDMASS_USB, "could not switch to "
 970                             "Alt Interface 1\n");
 971                         goto detach;
 972                 }
 973         }
 974         /* allocate all required USB transfers */
 975
 976         if (sc->sc_proto & UMASS_PROTO_BBB) {
 977
 978                 err = usbd_transfer_setup(uaa->device,
 979                     &uaa->info.bIfaceIndex, sc->sc_xfer, umass_bbb_config,
 980                     UMASS_T_BBB_MAX, sc, &sc->sc_mtx);
 981
 982                 /* skip reset first time */
 983                 sc->sc_last_xfer_index = UMASS_T_BBB_COMMAND;
 984
 985         } else if (sc->sc_proto & (UMASS_PROTO_CBI | UMASS_PROTO_CBI_I)) {
 986
 987                 err = usbd_transfer_setup(uaa->device,
 988                     &uaa->info.bIfaceIndex, sc->sc_xfer, umass_cbi_config,
 989                     UMASS_T_CBI_MAX, sc, &sc->sc_mtx);
 990
 991                 /* skip reset first time */
 992                 sc->sc_last_xfer_index = UMASS_T_CBI_COMMAND;
 993
 994         } else {
 995                 err = USB_ERR_INVAL;
 996         }
 997
 998         if (err) {
 999                 device_printf(dev, "could not setup required "
1000                     "transfers, %s\n", usbd_errstr(err));
1001                 goto detach;
1002         }
1003 #ifdef USB_DEBUG
1004         if (umass_throttle > 0) {
1005                 uint8_t x;
1006                 int iv;
1007
1008                 iv = umass_throttle;
1009
1010                 if (iv < 1)
1011                         iv = 1;
1012                 else if (iv > 8000)
1013                         iv = 8000;
1014
1015                 for (x = 0; x != UMASS_T_MAX; x++) {
1016                         if (sc->sc_xfer[x] != NULL)
1017                                 usbd_xfer_set_interval(sc->sc_xfer[x], iv);
1018                 }
1019         }
1020 #endif
1021         sc->sc_transform =
1022             (sc->sc_proto & UMASS_PROTO_SCSI) ? &umass_scsi_transform :
1023             (sc->sc_proto & UMASS_PROTO_UFI) ? &umass_ufi_transform :
1024             (sc->sc_proto & UMASS_PROTO_ATAPI) ? &umass_atapi_transform :
1025             (sc->sc_proto & UMASS_PROTO_RBC) ? &umass_rbc_transform :
1026             &umass_no_transform;
1027
1028         /* from here onwards the device can be used. */
1029
1030         if (sc->sc_quirks & SHUTTLE_INIT) {
1031                 umass_init_shuttle(sc);
1032         }
1033         /* get the maximum LUN supported by the device */
1034
1035         if (((sc->sc_proto & UMASS_PROTO_WIRE) == UMASS_PROTO_BBB) &&
1036             !(sc->sc_quirks & NO_GETMAXLUN))
1037                 sc->sc_maxlun = umass_bbb_get_max_lun(sc);
1038         else
1039                 sc->sc_maxlun = 0;
1040
1041         /* Prepare the SCSI command block */
1042         sc->cam_scsi_sense.opcode = REQUEST_SENSE;
1043         sc->cam_scsi_test_unit_ready.opcode = TEST_UNIT_READY;
1044
1045         /* register the SIM */
1046         err = umass_cam_attach_sim(sc);
1047         if (err) {
1048                 goto detach;
1049         }
1050         /* scan the SIM */
1051         umass_cam_attach(sc);
1052
1053         DPRINTF(sc, UDMASS_GEN, "Attach finished\n");
1054
1055         return (0);                     /* success */
1056
1057 detach:
1058         umass_detach(dev);
1059         return (ENXIO);                 /* failure */
1060 }
1061
1062 static int
1063 umass_detach(device_t dev)
1064 {
1065         struct umass_softc *sc = device_get_softc(dev);
1066
1067         DPRINTF(sc, UDMASS_USB, "\n");
1068
1069         /* teardown our statemachine */
1070
1071         usbd_transfer_unsetup(sc->sc_xfer, UMASS_T_MAX);
1072
1073         mtx_lock(&sc->sc_mtx);
1074
1075         /* cancel any leftover CCB's */
1076
1077         umass_cancel_ccb(sc);
1078
1079         umass_cam_detach_sim(sc);
1080
1081         mtx_unlock(&sc->sc_mtx);
1082
1083         mtx_destroy(&sc->sc_mtx);
1084
1085         return (0);                     /* success */
1086 }
1087
1088 static void
1089 umass_init_shuttle(struct umass_softc *sc)
1090 {
1091         struct usb_device_request req;
1092         uint8_t status[2] = {0, 0};
1093
1094         /*
1095          * The Linux driver does this, but no one can tell us what the
1096          * command does.
1097          */
1098         req.bmRequestType = UT_READ_VENDOR_DEVICE;
1099         req.bRequest = 1;               /* XXX unknown command */
1100         USETW(req.wValue, 0);
1101         req.wIndex[0] = sc->sc_iface_no;
1102         req.wIndex[1] = 0;
1103         USETW(req.wLength, sizeof(status));
1104         usbd_do_request(sc->sc_udev, NULL, &req, &status);
1105
1106         DPRINTF(sc, UDMASS_GEN, "Shuttle init returned 0x%02x%02x\n",
1107             status[0], status[1]);
1108 }
1109
1110 /*
1111  * Generic functions to handle transfers
1112  */
1113
1114 static void
1115 umass_transfer_start(struct umass_softc *sc, uint8_t xfer_index)
1116 {
1117         DPRINTF(sc, UDMASS_GEN, "transfer index = "
1118             "%d\n", xfer_index);
1119
1120         if (sc->sc_xfer[xfer_index]) {
1121                 sc->sc_last_xfer_index = xfer_index;
1122                 usbd_transfer_start(sc->sc_xfer[xfer_index]);
1123         } else {
1124                 umass_cancel_ccb(sc);
1125         }
1126 }
1127
1128 static void
1129 umass_reset(struct umass_softc *sc)
1130 {
1131         DPRINTF(sc, UDMASS_GEN, "resetting device\n");
1132
1133         /*
1134          * stop the last transfer, if not already stopped:
1135          */
1136         usbd_transfer_stop(sc->sc_xfer[sc->sc_last_xfer_index]);
1137         umass_transfer_start(sc, 0);
1138 }
1139
1140 static void
1141 umass_cancel_ccb(struct umass_softc *sc)
1142 {
1143         union ccb *ccb;
1144
1145         USB_MTX_ASSERT(&sc->sc_mtx, MA_OWNED);
1146
1147         ccb = sc->sc_transfer.ccb;
1148         sc->sc_transfer.ccb = NULL;
1149         sc->sc_last_xfer_index = 0;
1150
1151         if (ccb) {
1152                 (sc->sc_transfer.callback)
1153                     (sc, ccb, (sc->sc_transfer.data_len -
1154                     sc->sc_transfer.actlen), STATUS_WIRE_FAILED);
1155         }
1156 }
1157
1158 static void
1159 umass_tr_error(struct usb_xfer *xfer, usb_error_t error)
1160 {
1161         struct umass_softc *sc = usbd_xfer_softc(xfer);
1162
1163         if (error != USB_ERR_CANCELLED) {
1164
1165                 DPRINTF(sc, UDMASS_GEN, "transfer error, %s -> "
1166                     "reset\n", usbd_errstr(error));
1167         }
1168         umass_cancel_ccb(sc);
1169 }
1170
1171 /*
1172  * BBB protocol specific functions
1173  */
1174
1175 static void
1176 umass_t_bbb_reset1_callback(struct usb_xfer *xfer, usb_error_t error)
1177 {
1178         struct umass_softc *sc = usbd_xfer_softc(xfer);
1179         struct usb_device_request req;
1180         struct usb_page_cache *pc;
1181
1182         switch (USB_GET_STATE(xfer)) {
1183         case USB_ST_TRANSFERRED:
1184                 umass_transfer_start(sc, UMASS_T_BBB_RESET2);
1185                 return;
1186
1187         case USB_ST_SETUP:
1188                 /*
1189                  * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
1190                  *
1191                  * For Reset Recovery the host shall issue in the following order:
1192                  * a) a Bulk-Only Mass Storage Reset
1193                  * b) a Clear Feature HALT to the Bulk-In endpoint
1194                  * c) a Clear Feature HALT to the Bulk-Out endpoint
1195                  *
1196                  * This is done in 3 steps, using 3 transfers:
1197                  * UMASS_T_BBB_RESET1
1198                  * UMASS_T_BBB_RESET2
1199                  * UMASS_T_BBB_RESET3
1200                  */
1201
1202                 DPRINTF(sc, UDMASS_BBB, "BBB reset!\n");
1203
1204                 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1205                 req.bRequest = UR_BBB_RESET;    /* bulk only reset */
1206                 USETW(req.wValue, 0);
1207                 req.wIndex[0] = sc->sc_iface_no;
1208                 req.wIndex[1] = 0;
1209                 USETW(req.wLength, 0);
1210
1211                 pc = usbd_xfer_get_frame(xfer, 0);
1212                 usbd_copy_in(pc, 0, &req, sizeof(req));
1213
1214                 usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
1215                 usbd_xfer_set_frames(xfer, 1);
1216                 usbd_transfer_submit(xfer);
1217                 return;
1218
1219         default:                        /* Error */
1220                 umass_tr_error(xfer, error);
1221                 return;
1222         }
1223 }
1224
1225 static void
1226 umass_t_bbb_reset2_callback(struct usb_xfer *xfer, usb_error_t error)
1227 {
1228         umass_t_bbb_data_clear_stall_callback(xfer, UMASS_T_BBB_RESET3,
1229             UMASS_T_BBB_DATA_READ, error);
1230 }
1231
1232 static void
1233 umass_t_bbb_reset3_callback(struct usb_xfer *xfer, usb_error_t error)
1234 {
1235         umass_t_bbb_data_clear_stall_callback(xfer, UMASS_T_BBB_COMMAND,
1236             UMASS_T_BBB_DATA_WRITE, error);
1237 }
1238
1239 static void
1240 umass_t_bbb_data_clear_stall_callback(struct usb_xfer *xfer,
1241     uint8_t next_xfer, uint8_t stall_xfer, usb_error_t error)
1242 {
1243         struct umass_softc *sc = usbd_xfer_softc(xfer);
1244
1245         switch (USB_GET_STATE(xfer)) {
1246         case USB_ST_TRANSFERRED:
1247 tr_transferred:
1248                 umass_transfer_start(sc, next_xfer);
1249                 return;
1250
1251         case USB_ST_SETUP:
1252                 if (usbd_clear_stall_callback(xfer, sc->sc_xfer[stall_xfer])) {
1253                         goto tr_transferred;
1254                 }
1255                 return;
1256
1257         default:                        /* Error */
1258                 umass_tr_error(xfer, error);
1259                 return;
1260         }
1261 }
1262
1263 static void
1264 umass_t_bbb_command_callback(struct usb_xfer *xfer, usb_error_t error)
1265 {
1266         struct umass_softc *sc = usbd_xfer_softc(xfer);
1267         union ccb *ccb = sc->sc_transfer.ccb;
1268         struct usb_page_cache *pc;
1269         uint32_t tag;
1270
1271         switch (USB_GET_STATE(xfer)) {
1272         case USB_ST_TRANSFERRED:
1273                 umass_transfer_start
1274                     (sc, ((sc->sc_transfer.dir == DIR_IN) ? UMASS_T_BBB_DATA_READ :
1275                     (sc->sc_transfer.dir == DIR_OUT) ? UMASS_T_BBB_DATA_WRITE :
1276                     UMASS_T_BBB_STATUS));
1277                 return;
1278
1279         case USB_ST_SETUP:
1280
1281                 sc->sc_status_try = 0;
1282
1283                 if (ccb) {
1284
1285                         /*
1286                          * the initial value is not important,
1287                          * as long as the values are unique:
1288                          */
1289                         tag = UGETDW(sc->cbw.dCBWTag) + 1;
1290
1291                         USETDW(sc->cbw.dCBWSignature, CBWSIGNATURE);
1292                         USETDW(sc->cbw.dCBWTag, tag);
1293
1294                         /*
1295                          * dCBWDataTransferLength:
1296                          *   This field indicates the number of bytes of data that the host
1297                          *   intends to transfer on the IN or OUT Bulk endpoint(as indicated by
1298                          *   the Direction bit) during the execution of this command. If this
1299                          *   field is set to 0, the device will expect that no data will be
1300                          *   transferred IN or OUT during this command, regardless of the value
1301                          *   of the Direction bit defined in dCBWFlags.
1302                          */
1303                         USETDW(sc->cbw.dCBWDataTransferLength, sc->sc_transfer.data_len);
1304
1305                         /*
1306                          * dCBWFlags:
1307                          *   The bits of the Flags field are defined as follows:
1308                          *     Bits 0-6  reserved
1309                          *     Bit  7    Direction - this bit shall be ignored if the
1310                          *                           dCBWDataTransferLength field is zero.
1311                          *               0 = data Out from host to device
1312                          *               1 = data In from device to host
1313                          */
1314                         sc->cbw.bCBWFlags = ((sc->sc_transfer.dir == DIR_IN) ?
1315                             CBWFLAGS_IN : CBWFLAGS_OUT);
1316                         sc->cbw.bCBWLUN = sc->sc_transfer.lun;
1317
1318                         if (sc->sc_transfer.cmd_len > sizeof(sc->cbw.CBWCDB)) {
1319                                 sc->sc_transfer.cmd_len = sizeof(sc->cbw.CBWCDB);
1320                                 DPRINTF(sc, UDMASS_BBB, "Truncating long command!\n");
1321                         }
1322                         sc->cbw.bCDBLength = sc->sc_transfer.cmd_len;
1323
1324                         /* copy SCSI command data */
1325                         memcpy(sc->cbw.CBWCDB, sc->sc_transfer.cmd_data,
1326                             sc->sc_transfer.cmd_len);
1327
1328                         /* clear remaining command area */
1329                         memset(sc->cbw.CBWCDB +
1330                             sc->sc_transfer.cmd_len, 0,
1331                             sizeof(sc->cbw.CBWCDB) -
1332                             sc->sc_transfer.cmd_len);
1333
1334                         DIF(UDMASS_BBB, umass_bbb_dump_cbw(sc, &sc->cbw));
1335
1336                         pc = usbd_xfer_get_frame(xfer, 0);
1337                         usbd_copy_in(pc, 0, &sc->cbw, sizeof(sc->cbw));
1338                         usbd_xfer_set_frame_len(xfer, 0, sizeof(sc->cbw));
1339
1340                         usbd_transfer_submit(xfer);
1341                 }
1342                 return;
1343
1344         default:                        /* Error */
1345                 umass_tr_error(xfer, error);
1346                 return;
1347         }
1348 }
1349
1350 static void
1351 umass_t_bbb_data_read_callback(struct usb_xfer *xfer, usb_error_t error)
1352 {
1353         struct umass_softc *sc = usbd_xfer_softc(xfer);
1354         uint32_t max_bulk = usbd_xfer_max_len(xfer);
1355         int actlen, sumlen;
1356
1357         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1358
1359         switch (USB_GET_STATE(xfer)) {
1360         case USB_ST_TRANSFERRED:
1361                 sc->sc_transfer.data_rem -= actlen;
1362                 sc->sc_transfer.data_ptr += actlen;
1363                 sc->sc_transfer.actlen += actlen;
1364
1365                 if (actlen < sumlen) {
1366                         /* short transfer */
1367                         sc->sc_transfer.data_rem = 0;
1368                 }
1369         case USB_ST_SETUP:
1370                 DPRINTF(sc, UDMASS_BBB, "max_bulk=%d, data_rem=%d\n",
1371                     max_bulk, sc->sc_transfer.data_rem);
1372
1373                 if (sc->sc_transfer.data_rem == 0) {
1374                         umass_transfer_start(sc, UMASS_T_BBB_STATUS);
1375                         return;
1376                 }
1377                 if (max_bulk > sc->sc_transfer.data_rem) {
1378                         max_bulk = sc->sc_transfer.data_rem;
1379                 }
1380                 usbd_xfer_set_timeout(xfer, sc->sc_transfer.data_timeout);
1381
1382                 usbd_xfer_set_frame_data(xfer, 0, sc->sc_transfer.data_ptr,
1383                     max_bulk);
1384
1385                 usbd_transfer_submit(xfer);
1386                 return;
1387
1388         default:                        /* Error */
1389                 if (error == USB_ERR_CANCELLED) {
1390                         umass_tr_error(xfer, error);
1391                 } else {
1392                         umass_transfer_start(sc, UMASS_T_BBB_DATA_RD_CS);
1393                 }
1394                 return;
1395         }
1396 }
1397
1398 static void
1399 umass_t_bbb_data_rd_cs_callback(struct usb_xfer *xfer, usb_error_t error)
1400 {
1401         umass_t_bbb_data_clear_stall_callback(xfer, UMASS_T_BBB_STATUS,
1402             UMASS_T_BBB_DATA_READ, error);
1403 }
1404
1405 static void
1406 umass_t_bbb_data_write_callback(struct usb_xfer *xfer, usb_error_t error)
1407 {
1408         struct umass_softc *sc = usbd_xfer_softc(xfer);
1409         uint32_t max_bulk = usbd_xfer_max_len(xfer);
1410         int actlen, sumlen;
1411
1412         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1413
1414         switch (USB_GET_STATE(xfer)) {
1415         case USB_ST_TRANSFERRED:
1416                 sc->sc_transfer.data_rem -= actlen;
1417                 sc->sc_transfer.data_ptr += actlen;
1418                 sc->sc_transfer.actlen += actlen;
1419
1420                 if (actlen < sumlen) {
1421                         /* short transfer */
1422                         sc->sc_transfer.data_rem = 0;
1423                 }
1424         case USB_ST_SETUP:
1425                 DPRINTF(sc, UDMASS_BBB, "max_bulk=%d, data_rem=%d\n",
1426                     max_bulk, sc->sc_transfer.data_rem);
1427
1428                 if (sc->sc_transfer.data_rem == 0) {
1429                         umass_transfer_start(sc, UMASS_T_BBB_STATUS);
1430                         return;
1431                 }
1432                 if (max_bulk > sc->sc_transfer.data_rem) {
1433                         max_bulk = sc->sc_transfer.data_rem;
1434                 }
1435                 usbd_xfer_set_timeout(xfer, sc->sc_transfer.data_timeout);
1436
1437                 usbd_xfer_set_frame_data(xfer, 0, sc->sc_transfer.data_ptr,
1438                     max_bulk);
1439
1440                 usbd_transfer_submit(xfer);
1441                 return;
1442
1443         default:                        /* Error */
1444                 if (error == USB_ERR_CANCELLED) {
1445                         umass_tr_error(xfer, error);
1446                 } else {
1447                         umass_transfer_start(sc, UMASS_T_BBB_DATA_WR_CS);
1448                 }
1449                 return;
1450         }
1451 }
1452
1453 static void
1454 umass_t_bbb_data_wr_cs_callback(struct usb_xfer *xfer, usb_error_t error)
1455 {
1456         umass_t_bbb_data_clear_stall_callback(xfer, UMASS_T_BBB_STATUS,
1457             UMASS_T_BBB_DATA_WRITE, error);
1458 }
1459
1460 static void
1461 umass_t_bbb_status_callback(struct usb_xfer *xfer, usb_error_t error)
1462 {
1463         struct umass_softc *sc = usbd_xfer_softc(xfer);
1464         union ccb *ccb = sc->sc_transfer.ccb;
1465         struct usb_page_cache *pc;
1466         uint32_t residue;
1467         int actlen;
1468
1469         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1470
1471         switch (USB_GET_STATE(xfer)) {
1472         case USB_ST_TRANSFERRED:
1473
1474                 /*
1475                  * Do a full reset if there is something wrong with the CSW:
1476                  */
1477                 sc->sc_status_try = 1;
1478
1479                 /* Zero missing parts of the CSW: */
1480
1481                 if (actlen < (int)sizeof(sc->csw))
1482                         memset(&sc->csw, 0, sizeof(sc->csw));
1483
1484                 pc = usbd_xfer_get_frame(xfer, 0);
1485                 usbd_copy_out(pc, 0, &sc->csw, actlen);
1486
1487                 DIF(UDMASS_BBB, umass_bbb_dump_csw(sc, &sc->csw));
1488
1489                 residue = UGETDW(sc->csw.dCSWDataResidue);
1490
1491                 if ((!residue) || (sc->sc_quirks & IGNORE_RESIDUE)) {
1492                         residue = (sc->sc_transfer.data_len -
1493                             sc->sc_transfer.actlen);
1494                 }
1495                 if (residue > sc->sc_transfer.data_len) {
1496                         DPRINTF(sc, UDMASS_BBB, "truncating residue from %d "
1497                             "to %d bytes\n", residue, sc->sc_transfer.data_len);
1498                         residue = sc->sc_transfer.data_len;
1499                 }
1500                 /* translate weird command-status signatures: */
1501                 if (sc->sc_quirks & WRONG_CSWSIG) {
1502
1503                         uint32_t temp = UGETDW(sc->csw.dCSWSignature);
1504
1505                         if ((temp == CSWSIGNATURE_OLYMPUS_C1) ||
1506                             (temp == CSWSIGNATURE_IMAGINATION_DBX1)) {
1507                                 USETDW(sc->csw.dCSWSignature, CSWSIGNATURE);
1508                         }
1509                 }
1510                 /* check CSW and handle eventual error */
1511                 if (UGETDW(sc->csw.dCSWSignature) != CSWSIGNATURE) {
1512                         DPRINTF(sc, UDMASS_BBB, "bad CSW signature 0x%08x != 0x%08x\n",
1513                             UGETDW(sc->csw.dCSWSignature), CSWSIGNATURE);
1514                         /*
1515                          * Invalid CSW: Wrong signature or wrong tag might
1516                          * indicate that we lost synchronization. Reset the
1517                          * device.
1518                          */
1519                         goto tr_error;
1520                 } else if (UGETDW(sc->csw.dCSWTag) != UGETDW(sc->cbw.dCBWTag)) {
1521                         DPRINTF(sc, UDMASS_BBB, "Invalid CSW: tag 0x%08x should be "
1522                             "0x%08x\n", UGETDW(sc->csw.dCSWTag),
1523                             UGETDW(sc->cbw.dCBWTag));
1524                         goto tr_error;
1525                 } else if (sc->csw.bCSWStatus > CSWSTATUS_PHASE) {
1526                         DPRINTF(sc, UDMASS_BBB, "Invalid CSW: status %d > %d\n",
1527                             sc->csw.bCSWStatus, CSWSTATUS_PHASE);
1528                         goto tr_error;
1529                 } else if (sc->csw.bCSWStatus == CSWSTATUS_PHASE) {
1530                         DPRINTF(sc, UDMASS_BBB, "Phase error, residue = "
1531                             "%d\n", residue);
1532                         goto tr_error;
1533                 } else if (sc->sc_transfer.actlen > sc->sc_transfer.data_len) {
1534                         DPRINTF(sc, UDMASS_BBB, "Buffer overrun %d > %d\n",
1535                             sc->sc_transfer.actlen, sc->sc_transfer.data_len);
1536                         goto tr_error;
1537                 } else if (sc->csw.bCSWStatus == CSWSTATUS_FAILED) {
1538                         DPRINTF(sc, UDMASS_BBB, "Command failed, residue = "
1539                             "%d\n", residue);
1540
1541                         sc->sc_transfer.ccb = NULL;
1542
1543                         sc->sc_last_xfer_index = UMASS_T_BBB_COMMAND;
1544
1545                         (sc->sc_transfer.callback)
1546                             (sc, ccb, residue, STATUS_CMD_FAILED);
1547                 } else {
1548                         sc->sc_transfer.ccb = NULL;
1549
1550                         sc->sc_last_xfer_index = UMASS_T_BBB_COMMAND;
1551
1552                         (sc->sc_transfer.callback)
1553                             (sc, ccb, residue, STATUS_CMD_OK);
1554                 }
1555                 return;
1556
1557         case USB_ST_SETUP:
1558                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1559                 usbd_transfer_submit(xfer);
1560                 return;
1561
1562         default:
1563 tr_error:
1564                 DPRINTF(sc, UDMASS_BBB, "Failed to read CSW: %s, try %d\n",
1565                     usbd_errstr(error), sc->sc_status_try);
1566
1567                 if ((error == USB_ERR_CANCELLED) ||
1568                     (sc->sc_status_try)) {
1569                         umass_tr_error(xfer, error);
1570                 } else {
1571                         sc->sc_status_try = 1;
1572                         umass_transfer_start(sc, UMASS_T_BBB_DATA_RD_CS);
1573                 }
1574                 return;
1575         }
1576 }
1577
1578 static void
1579 umass_command_start(struct umass_softc *sc, uint8_t dir,
1580     void *data_ptr, uint32_t data_len,
1581     uint32_t data_timeout, umass_callback_t *callback,
1582     union ccb *ccb)
1583 {
1584         sc->sc_transfer.lun = ccb->ccb_h.target_lun;
1585
1586         /*
1587          * NOTE: assumes that "sc->sc_transfer.cmd_data" and
1588          * "sc->sc_transfer.cmd_len" has been properly
1589          * initialized.
1590          */
1591
1592         sc->sc_transfer.dir = data_len ? dir : DIR_NONE;
1593         sc->sc_transfer.data_ptr = data_ptr;
1594         sc->sc_transfer.data_len = data_len;
1595         sc->sc_transfer.data_rem = data_len;
1596         sc->sc_transfer.data_timeout = (data_timeout + UMASS_TIMEOUT);
1597
1598         sc->sc_transfer.actlen = 0;
1599         sc->sc_transfer.callback = callback;
1600         sc->sc_transfer.ccb = ccb;
1601
1602         if (sc->sc_xfer[sc->sc_last_xfer_index]) {
1603                 usbd_transfer_start(sc->sc_xfer[sc->sc_last_xfer_index]);
1604         } else {
1605                 umass_cancel_ccb(sc);
1606         }
1607 }
1608
1609 static uint8_t
1610 umass_bbb_get_max_lun(struct umass_softc *sc)
1611 {
1612         struct usb_device_request req;
1613         usb_error_t err;
1614         uint8_t buf = 0;
1615
1616         /* The Get Max Lun command is a class-specific request. */
1617         req.bmRequestType = UT_READ_CLASS_INTERFACE;
1618         req.bRequest = UR_BBB_GET_MAX_LUN;
1619         USETW(req.wValue, 0);
1620         req.wIndex[0] = sc->sc_iface_no;
1621         req.wIndex[1] = 0;
1622         USETW(req.wLength, 1);
1623
1624         err = usbd_do_request(sc->sc_udev, NULL, &req, &buf);
1625         if (err) {
1626                 buf = 0;
1627
1628                 /* Device doesn't support Get Max Lun request. */
1629                 printf("%s: Get Max Lun not supported (%s)\n",
1630                     sc->sc_name, usbd_errstr(err));
1631         }
1632         return (buf);
1633 }
1634
1635 /*
1636  * Command/Bulk/Interrupt (CBI) specific functions
1637  */
1638
1639 static void
1640 umass_cbi_start_status(struct umass_softc *sc)
1641 {
1642         if (sc->sc_xfer[UMASS_T_CBI_STATUS]) {
1643                 umass_transfer_start(sc, UMASS_T_CBI_STATUS);
1644         } else {
1645                 union ccb *ccb = sc->sc_transfer.ccb;
1646
1647                 sc->sc_transfer.ccb = NULL;
1648
1649                 sc->sc_last_xfer_index = UMASS_T_CBI_COMMAND;
1650
1651                 (sc->sc_transfer.callback)
1652                     (sc, ccb, (sc->sc_transfer.data_len -
1653                     sc->sc_transfer.actlen), STATUS_CMD_UNKNOWN);
1654         }
1655 }
1656
1657 static void
1658 umass_t_cbi_reset1_callback(struct usb_xfer *xfer, usb_error_t error)
1659 {
1660         struct umass_softc *sc = usbd_xfer_softc(xfer);
1661         struct usb_device_request req;
1662         struct usb_page_cache *pc;
1663         uint8_t buf[UMASS_CBI_DIAGNOSTIC_CMDLEN];
1664
1665         uint8_t i;
1666
1667         switch (USB_GET_STATE(xfer)) {
1668         case USB_ST_TRANSFERRED:
1669                 umass_transfer_start(sc, UMASS_T_CBI_RESET2);
1670                 break;
1671
1672         case USB_ST_SETUP:
1673                 /*
1674                  * Command Block Reset Protocol
1675                  *
1676                  * First send a reset request to the device. Then clear
1677                  * any possibly stalled bulk endpoints.
1678                  *
1679                  * This is done in 3 steps, using 3 transfers:
1680                  * UMASS_T_CBI_RESET1
1681                  * UMASS_T_CBI_RESET2
1682                  * UMASS_T_CBI_RESET3
1683                  * UMASS_T_CBI_RESET4 (only if there is an interrupt endpoint)
1684                  */
1685
1686                 DPRINTF(sc, UDMASS_CBI, "CBI reset!\n");
1687
1688                 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1689                 req.bRequest = UR_CBI_ADSC;
1690                 USETW(req.wValue, 0);
1691                 req.wIndex[0] = sc->sc_iface_no;
1692                 req.wIndex[1] = 0;
1693                 USETW(req.wLength, UMASS_CBI_DIAGNOSTIC_CMDLEN);
1694
1695                 /*
1696                  * The 0x1d code is the SEND DIAGNOSTIC command. To
1697                  * distinguish between the two, the last 10 bytes of the CBL
1698                  * is filled with 0xff (section 2.2 of the CBI
1699                  * specification)
1700                  */
1701                 buf[0] = 0x1d;          /* Command Block Reset */
1702                 buf[1] = 0x04;
1703
1704                 for (i = 2; i < UMASS_CBI_DIAGNOSTIC_CMDLEN; i++) {
1705                         buf[i] = 0xff;
1706                 }
1707
1708                 pc = usbd_xfer_get_frame(xfer, 0);
1709                 usbd_copy_in(pc, 0, &req, sizeof(req));
1710                 pc = usbd_xfer_get_frame(xfer, 1);
1711                 usbd_copy_in(pc, 0, buf, sizeof(buf));
1712
1713                 usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
1714                 usbd_xfer_set_frame_len(xfer, 1, sizeof(buf));
1715                 usbd_xfer_set_frames(xfer, 2);
1716                 usbd_transfer_submit(xfer);
1717                 break;
1718
1719         default:                        /* Error */
1720                 if (error == USB_ERR_CANCELLED)
1721                         umass_tr_error(xfer, error);
1722                 else
1723                         umass_transfer_start(sc, UMASS_T_CBI_RESET2);
1724                 break;
1725         }
1726 }
1727
1728 static void
1729 umass_t_cbi_reset2_callback(struct usb_xfer *xfer, usb_error_t error)
1730 {
1731         umass_t_cbi_data_clear_stall_callback(xfer, UMASS_T_CBI_RESET3,
1732             UMASS_T_CBI_DATA_READ, error);
1733 }
1734
1735 static void
1736 umass_t_cbi_reset3_callback(struct usb_xfer *xfer, usb_error_t error)
1737 {
1738         struct umass_softc *sc = usbd_xfer_softc(xfer);
1739
1740         umass_t_cbi_data_clear_stall_callback
1741             (xfer, (sc->sc_xfer[UMASS_T_CBI_RESET4] &&
1742             sc->sc_xfer[UMASS_T_CBI_STATUS]) ?
1743             UMASS_T_CBI_RESET4 : UMASS_T_CBI_COMMAND,
1744             UMASS_T_CBI_DATA_WRITE, error);
1745 }
1746
1747 static void
1748 umass_t_cbi_reset4_callback(struct usb_xfer *xfer, usb_error_t error)
1749 {
1750         umass_t_cbi_data_clear_stall_callback(xfer, UMASS_T_CBI_COMMAND,
1751             UMASS_T_CBI_STATUS, error);
1752 }
1753
1754 static void
1755 umass_t_cbi_data_clear_stall_callback(struct usb_xfer *xfer,
1756     uint8_t next_xfer, uint8_t stall_xfer, usb_error_t error)
1757 {
1758         struct umass_softc *sc = usbd_xfer_softc(xfer);
1759
1760         switch (USB_GET_STATE(xfer)) {
1761         case USB_ST_TRANSFERRED:
1762 tr_transferred:
1763                 if (next_xfer == UMASS_T_CBI_STATUS) {
1764                         umass_cbi_start_status(sc);
1765                 } else {
1766                         umass_transfer_start(sc, next_xfer);
1767                 }
1768                 break;
1769
1770         case USB_ST_SETUP:
1771                 if (usbd_clear_stall_callback(xfer, sc->sc_xfer[stall_xfer])) {
1772                         goto tr_transferred;    /* should not happen */
1773                 }
1774                 break;
1775
1776         default:                        /* Error */
1777                 umass_tr_error(xfer, error);
1778                 break;
1779         }
1780 }
1781
1782 static void
1783 umass_t_cbi_command_callback(struct usb_xfer *xfer, usb_error_t error)
1784 {
1785         struct umass_softc *sc = usbd_xfer_softc(xfer);
1786         union ccb *ccb = sc->sc_transfer.ccb;
1787         struct usb_device_request req;
1788         struct usb_page_cache *pc;
1789
1790         switch (USB_GET_STATE(xfer)) {
1791         case USB_ST_TRANSFERRED:
1792
1793                 if (sc->sc_transfer.dir == DIR_NONE) {
1794                         umass_cbi_start_status(sc);
1795                 } else {
1796                         umass_transfer_start
1797                             (sc, (sc->sc_transfer.dir == DIR_IN) ?
1798                             UMASS_T_CBI_DATA_READ : UMASS_T_CBI_DATA_WRITE);
1799                 }
1800                 break;
1801
1802         case USB_ST_SETUP:
1803
1804                 if (ccb) {
1805
1806                         /*
1807                          * do a CBI transfer with cmd_len bytes from
1808                          * cmd_data, possibly a data phase of data_len
1809                          * bytes from/to the device and finally a status
1810                          * read phase.
1811                          */
1812
1813                         req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1814                         req.bRequest = UR_CBI_ADSC;
1815                         USETW(req.wValue, 0);
1816                         req.wIndex[0] = sc->sc_iface_no;
1817                         req.wIndex[1] = 0;
1818                         req.wLength[0] = sc->sc_transfer.cmd_len;
1819                         req.wLength[1] = 0;
1820
1821                         pc = usbd_xfer_get_frame(xfer, 0);
1822                         usbd_copy_in(pc, 0, &req, sizeof(req));
1823                         pc = usbd_xfer_get_frame(xfer, 1);
1824                         usbd_copy_in(pc, 0, sc->sc_transfer.cmd_data,
1825                             sc->sc_transfer.cmd_len);
1826
1827                         usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
1828                         usbd_xfer_set_frame_len(xfer, 1, sc->sc_transfer.cmd_len);
1829                         usbd_xfer_set_frames(xfer,
1830                             sc->sc_transfer.cmd_len ? 2 : 1);
1831
1832                         DIF(UDMASS_CBI,
1833                             umass_cbi_dump_cmd(sc,
1834                             sc->sc_transfer.cmd_data,
1835                             sc->sc_transfer.cmd_len));
1836
1837                         usbd_transfer_submit(xfer);
1838                 }
1839                 break;
1840
1841         default:                        /* Error */
1842                 /*
1843                  * STALL on the control pipe can be result of the command error.
1844                  * Attempt to clear this STALL same as for bulk pipe also
1845                  * results in command completion interrupt, but ASC/ASCQ there
1846                  * look like not always valid, so don't bother about it.
1847                  */
1848                 if ((error == USB_ERR_STALLED) ||
1849                     (sc->sc_transfer.callback == &umass_cam_cb)) {
1850                         sc->sc_transfer.ccb = NULL;
1851                         (sc->sc_transfer.callback)
1852                             (sc, ccb, sc->sc_transfer.data_len,
1853                             STATUS_CMD_UNKNOWN);
1854                 } else {
1855                         umass_tr_error(xfer, error);
1856                         /* skip reset */
1857                         sc->sc_last_xfer_index = UMASS_T_CBI_COMMAND;
1858                 }
1859                 break;
1860         }
1861 }
1862
1863 static void
1864 umass_t_cbi_data_read_callback(struct usb_xfer *xfer, usb_error_t error)
1865 {
1866         struct umass_softc *sc = usbd_xfer_softc(xfer);
1867         uint32_t max_bulk = usbd_xfer_max_len(xfer);
1868         int actlen, sumlen;
1869
1870         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1871
1872         switch (USB_GET_STATE(xfer)) {
1873         case USB_ST_TRANSFERRED:
1874                 sc->sc_transfer.data_rem -= actlen;
1875                 sc->sc_transfer.data_ptr += actlen;
1876                 sc->sc_transfer.actlen += actlen;
1877
1878                 if (actlen < sumlen) {
1879                         /* short transfer */
1880                         sc->sc_transfer.data_rem = 0;
1881                 }
1882         case USB_ST_SETUP:
1883                 DPRINTF(sc, UDMASS_CBI, "max_bulk=%d, data_rem=%d\n",
1884                     max_bulk, sc->sc_transfer.data_rem);
1885
1886                 if (sc->sc_transfer.data_rem == 0) {
1887                         umass_cbi_start_status(sc);
1888                         break;
1889                 }
1890                 if (max_bulk > sc->sc_transfer.data_rem) {
1891                         max_bulk = sc->sc_transfer.data_rem;
1892                 }
1893                 usbd_xfer_set_timeout(xfer, sc->sc_transfer.data_timeout);
1894
1895                 usbd_xfer_set_frame_data(xfer, 0, sc->sc_transfer.data_ptr,
1896                     max_bulk);
1897
1898                 usbd_transfer_submit(xfer);
1899                 break;
1900
1901         default:                        /* Error */
1902                 if ((error == USB_ERR_CANCELLED) ||
1903                     (sc->sc_transfer.callback != &umass_cam_cb)) {
1904                         umass_tr_error(xfer, error);
1905                 } else {
1906                         umass_transfer_start(sc, UMASS_T_CBI_DATA_RD_CS);
1907                 }
1908                 break;
1909         }
1910 }
1911
1912 static void
1913 umass_t_cbi_data_rd_cs_callback(struct usb_xfer *xfer, usb_error_t error)
1914 {
1915         umass_t_cbi_data_clear_stall_callback(xfer, UMASS_T_CBI_STATUS,
1916             UMASS_T_CBI_DATA_READ, error);
1917 }
1918
1919 static void
1920 umass_t_cbi_data_write_callback(struct usb_xfer *xfer, usb_error_t error)
1921 {
1922         struct umass_softc *sc = usbd_xfer_softc(xfer);
1923         uint32_t max_bulk = usbd_xfer_max_len(xfer);
1924         int actlen, sumlen;
1925
1926         usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
1927
1928         switch (USB_GET_STATE(xfer)) {
1929         case USB_ST_TRANSFERRED:
1930                 sc->sc_transfer.data_rem -= actlen;
1931                 sc->sc_transfer.data_ptr += actlen;
1932                 sc->sc_transfer.actlen += actlen;
1933
1934                 if (actlen < sumlen) {
1935                         /* short transfer */
1936                         sc->sc_transfer.data_rem = 0;
1937                 }
1938         case USB_ST_SETUP:
1939                 DPRINTF(sc, UDMASS_CBI, "max_bulk=%d, data_rem=%d\n",
1940                     max_bulk, sc->sc_transfer.data_rem);
1941
1942                 if (sc->sc_transfer.data_rem == 0) {
1943                         umass_cbi_start_status(sc);
1944                         break;
1945                 }
1946                 if (max_bulk > sc->sc_transfer.data_rem) {
1947                         max_bulk = sc->sc_transfer.data_rem;
1948                 }
1949                 usbd_xfer_set_timeout(xfer, sc->sc_transfer.data_timeout);
1950
1951                 usbd_xfer_set_frame_data(xfer, 0, sc->sc_transfer.data_ptr,
1952                     max_bulk);
1953
1954                 usbd_transfer_submit(xfer);
1955                 break;
1956
1957         default:                        /* Error */
1958                 if ((error == USB_ERR_CANCELLED) ||
1959                     (sc->sc_transfer.callback != &umass_cam_cb)) {
1960                         umass_tr_error(xfer, error);
1961                 } else {
1962                         umass_transfer_start(sc, UMASS_T_CBI_DATA_WR_CS);
1963                 }
1964                 break;
1965         }
1966 }
1967
1968 static void
1969 umass_t_cbi_data_wr_cs_callback(struct usb_xfer *xfer, usb_error_t error)
1970 {
1971         umass_t_cbi_data_clear_stall_callback(xfer, UMASS_T_CBI_STATUS,
1972             UMASS_T_CBI_DATA_WRITE, error);
1973 }
1974
1975 static void
1976 umass_t_cbi_status_callback(struct usb_xfer *xfer, usb_error_t error)
1977 {
1978         struct umass_softc *sc = usbd_xfer_softc(xfer);
1979         union ccb *ccb = sc->sc_transfer.ccb;
1980         struct usb_page_cache *pc;
1981         uint32_t residue;
1982         uint8_t status;
1983         int actlen;
1984
1985         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1986
1987         switch (USB_GET_STATE(xfer)) {
1988         case USB_ST_TRANSFERRED:
1989
1990                 if (actlen < (int)sizeof(sc->sbl)) {
1991                         goto tr_setup;
1992                 }
1993                 pc = usbd_xfer_get_frame(xfer, 0);
1994                 usbd_copy_out(pc, 0, &sc->sbl, sizeof(sc->sbl));
1995
1996                 residue = (sc->sc_transfer.data_len -
1997                     sc->sc_transfer.actlen);
1998
1999                 /* dissect the information in the buffer */
2000
2001                 if (sc->sc_proto & UMASS_PROTO_UFI) {
2002
2003                         /*
2004                          * Section 3.4.3.1.3 specifies that the UFI command
2005                          * protocol returns an ASC and ASCQ in the interrupt
2006                          * data block.
2007                          */
2008
2009                         DPRINTF(sc, UDMASS_CBI, "UFI CCI, ASC = 0x%02x, "
2010                             "ASCQ = 0x%02x\n", sc->sbl.ufi.asc,
2011                             sc->sbl.ufi.ascq);
2012
2013                         status = (((sc->sbl.ufi.asc == 0) &&
2014                             (sc->sbl.ufi.ascq == 0)) ?
2015                             STATUS_CMD_OK : STATUS_CMD_FAILED);
2016
2017                         sc->sc_transfer.ccb = NULL;
2018
2019                         sc->sc_last_xfer_index = UMASS_T_CBI_COMMAND;
2020
2021                         (sc->sc_transfer.callback)
2022                             (sc, ccb, residue, status);
2023
2024                         break;
2025
2026                 } else {
2027
2028                         /* Command Interrupt Data Block */
2029
2030                         DPRINTF(sc, UDMASS_CBI, "type=0x%02x, value=0x%02x\n",
2031                             sc->sbl.common.type, sc->sbl.common.value);
2032
2033                         if (sc->sbl.common.type == IDB_TYPE_CCI) {
2034
2035                                 status = (sc->sbl.common.value & IDB_VALUE_STATUS_MASK);
2036
2037                                 status = ((status == IDB_VALUE_PASS) ? STATUS_CMD_OK :
2038                                     (status == IDB_VALUE_FAIL) ? STATUS_CMD_FAILED :
2039                                     (status == IDB_VALUE_PERSISTENT) ? STATUS_CMD_FAILED :
2040                                     STATUS_WIRE_FAILED);
2041
2042                                 sc->sc_transfer.ccb = NULL;
2043
2044                                 sc->sc_last_xfer_index = UMASS_T_CBI_COMMAND;
2045
2046                                 (sc->sc_transfer.callback)
2047                                     (sc, ccb, residue, status);
2048
2049                                 break;
2050                         }
2051                 }
2052
2053                 /* fallthrough */
2054
2055         case USB_ST_SETUP:
2056 tr_setup:
2057                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
2058                 usbd_transfer_submit(xfer);
2059                 break;
2060
2061         default:                        /* Error */
2062                 DPRINTF(sc, UDMASS_CBI, "Failed to read CSW: %s\n",
2063                     usbd_errstr(error));
2064                 umass_tr_error(xfer, error);
2065                 break;
2066         }
2067 }
2068
2069 /*
2070  * CAM specific functions (used by SCSI, UFI, 8070i (ATAPI))
2071  */
2072
2073 static int
2074 umass_cam_attach_sim(struct umass_softc *sc)
2075 {
2076         struct cam_devq *devq;          /* Per device Queue */
2077
2078         /*
2079          * A HBA is attached to the CAM layer.
2080          *
2081          * The CAM layer will then after a while start probing for devices on
2082          * the bus. The number of SIMs is limited to one.
2083          */
2084
2085         devq = cam_simq_alloc(1 /* maximum openings */ );
2086         if (devq == NULL) {
2087                 return (ENOMEM);
2088         }
2089         sc->sc_sim = cam_sim_alloc
2090             (&umass_cam_action, &umass_cam_poll,
2091             DEVNAME_SIM,
2092             sc /* priv */ ,
2093             sc->sc_unit /* unit number */ ,
2094             &sc->sc_mtx /* mutex */ ,
2095             1 /* maximum device openings */ ,
2096             0 /* maximum tagged device openings */ ,
2097             devq);
2098
2099         if (sc->sc_sim == NULL) {
2100                 cam_simq_free(devq);
2101                 return (ENOMEM);
2102         }
2103
2104         mtx_lock(&sc->sc_mtx);
2105
2106         if (xpt_bus_register(sc->sc_sim, sc->sc_dev,
2107             sc->sc_unit) != CAM_SUCCESS) {
2108                 mtx_unlock(&sc->sc_mtx);
2109                 return (ENOMEM);
2110         }
2111         mtx_unlock(&sc->sc_mtx);
2112
2113         return (0);
2114 }
2115
2116 static void
2117 umass_cam_attach(struct umass_softc *sc)
2118 {
2119 #ifndef USB_DEBUG
2120         if (bootverbose)
2121 #endif
2122                 printf("%s:%d:%d: Attached to scbus%d\n",
2123                     sc->sc_name, cam_sim_path(sc->sc_sim),
2124                     sc->sc_unit, cam_sim_path(sc->sc_sim));
2125 }
2126
2127 /* umass_cam_detach
2128  *      detach from the CAM layer
2129  */
2130
2131 static void
2132 umass_cam_detach_sim(struct umass_softc *sc)
2133 {
2134         if (sc->sc_sim != NULL) {
2135                 if (xpt_bus_deregister(cam_sim_path(sc->sc_sim))) {
2136                         /* accessing the softc is not possible after this */
2137                         sc->sc_sim->softc = NULL;
2138                         cam_sim_free(sc->sc_sim, /* free_devq */ TRUE);
2139                 } else {
2140                         panic("%s: CAM layer is busy\n",
2141                             sc->sc_name);
2142                 }
2143                 sc->sc_sim = NULL;
2144         }
2145 }
2146
2147 /* umass_cam_action
2148  *      CAM requests for action come through here
2149  */
2150
2151 static void
2152 umass_cam_action(struct cam_sim *sim, union ccb *ccb)
2153 {
2154         struct umass_softc *sc = (struct umass_softc *)sim->softc;
2155
2156         if (sc == NULL) {
2157                 ccb->ccb_h.status = CAM_SEL_TIMEOUT;
2158                 xpt_done(ccb);
2159                 return;
2160         }
2161
2162         /* Perform the requested action */
2163         switch (ccb->ccb_h.func_code) {
2164         case XPT_SCSI_IO:
2165                 {
2166                         uint8_t *cmd;
2167                         uint8_t dir;
2168
2169                         if (ccb->csio.ccb_h.flags & CAM_CDB_POINTER) {
2170                                 cmd = (uint8_t *)(ccb->csio.cdb_io.cdb_ptr);
2171                         } else {
2172                                 cmd = (uint8_t *)(ccb->csio.cdb_io.cdb_bytes);
2173                         }
2174
2175                         DPRINTF(sc, UDMASS_SCSI, "%d:%d:%jx:XPT_SCSI_IO: "
2176                             "cmd: 0x%02x, flags: 0x%02x, "
2177                             "%db cmd/%db data/%db sense\n",
2178                             cam_sim_path(sc->sc_sim), ccb->ccb_h.target_id,
2179                             (uintmax_t)ccb->ccb_h.target_lun, cmd[0],
2180                             ccb->ccb_h.flags & CAM_DIR_MASK, ccb->csio.cdb_len,
2181                             ccb->csio.dxfer_len, ccb->csio.sense_len);
2182
2183                         if (sc->sc_transfer.ccb) {
2184                                 DPRINTF(sc, UDMASS_SCSI, "%d:%d:%jx:XPT_SCSI_IO: "
2185                                     "I/O in progress, deferring\n",
2186                                     cam_sim_path(sc->sc_sim), ccb->ccb_h.target_id,
2187                                     (uintmax_t)ccb->ccb_h.target_lun);
2188                                 ccb->ccb_h.status = CAM_SCSI_BUSY;
2189                                 xpt_done(ccb);
2190                                 goto done;
2191                         }
2192                         switch (ccb->ccb_h.flags & CAM_DIR_MASK) {
2193                         case CAM_DIR_IN:
2194                                 dir = DIR_IN;
2195                                 break;
2196                         case CAM_DIR_OUT:
2197                                 dir = DIR_OUT;
2198                                 DIF(UDMASS_SCSI,
2199                                     umass_dump_buffer(sc, ccb->csio.data_ptr,
2200                                     ccb->csio.dxfer_len, 48));
2201                                 break;
2202                         default:
2203                                 dir = DIR_NONE;
2204                         }
2205
2206                         ccb->ccb_h.status = CAM_REQ_INPROG | CAM_SIM_QUEUED;
2207
2208                         /*
2209                          * sc->sc_transform will convert the command to the
2210                          * command format needed by the specific command set
2211                          * and return the converted command in
2212                          * "sc->sc_transfer.cmd_data"
2213                          */
2214                         if (umass_std_transform(sc, ccb, cmd, ccb->csio.cdb_len)) {
2215
2216                                 if (sc->sc_transfer.cmd_data[0] == INQUIRY) {
2217                                         const char *pserial;
2218
2219                                         pserial = usb_get_serial(sc->sc_udev);
2220
2221                                         /*
2222                                          * Umass devices don't generally report their serial numbers
2223                                          * in the usual SCSI way.  Emulate it here.
2224                                          */
2225                                         if ((sc->sc_transfer.cmd_data[1] & SI_EVPD) &&
2226                                             (sc->sc_transfer.cmd_data[2] == SVPD_UNIT_SERIAL_NUMBER) &&
2227                                             (pserial[0] != '\0')) {
2228                                                 struct scsi_vpd_unit_serial_number *vpd_serial;
2229
2230                                                 vpd_serial = (struct scsi_vpd_unit_serial_number *)ccb->csio.data_ptr;
2231                                                 vpd_serial->length = strlen(pserial);
2232                                                 if (vpd_serial->length > sizeof(vpd_serial->serial_num))
2233                                                         vpd_serial->length = sizeof(vpd_serial->serial_num);
2234                                                 memcpy(vpd_serial->serial_num, pserial, vpd_serial->length);
2235                                                 ccb->csio.scsi_status = SCSI_STATUS_OK;
2236                                                 ccb->ccb_h.status = CAM_REQ_CMP;
2237                                                 xpt_done(ccb);
2238                                                 goto done;
2239                                         }
2240
2241                                         /*
2242                                          * Handle EVPD inquiry for broken devices first
2243                                          * NO_INQUIRY also implies NO_INQUIRY_EVPD
2244                                          */
2245                                         if ((sc->sc_quirks & (NO_INQUIRY_EVPD | NO_INQUIRY)) &&
2246                                             (sc->sc_transfer.cmd_data[1] & SI_EVPD)) {
2247
2248                                                 scsi_set_sense_data(&ccb->csio.sense_data,
2249                                                         /*sense_format*/ SSD_TYPE_NONE,
2250                                                         /*current_error*/ 1,
2251                                                         /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
2252                                                         /*asc*/ 0x24,
2253                                                         /*ascq*/ 0x00,
2254                                                         /*extra args*/ SSD_ELEM_NONE);
2255                                                 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
2256                                                 ccb->ccb_h.status =
2257                                                     CAM_SCSI_STATUS_ERROR |
2258                                                     CAM_AUTOSNS_VALID |
2259                                                     CAM_DEV_QFRZN;
2260                                                 xpt_freeze_devq(ccb->ccb_h.path, 1);
2261                                                 xpt_done(ccb);
2262                                                 goto done;
2263                                         }
2264                                         /*
2265                                          * Return fake inquiry data for
2266                                          * broken devices
2267                                          */
2268                                         if (sc->sc_quirks & NO_INQUIRY) {
2269                                                 memcpy(ccb->csio.data_ptr, &fake_inq_data,
2270                                                     sizeof(fake_inq_data));
2271                                                 ccb->csio.scsi_status = SCSI_STATUS_OK;
2272                                                 ccb->ccb_h.status = CAM_REQ_CMP;
2273                                                 xpt_done(ccb);
2274                                                 goto done;
2275                                         }
2276                                         if (sc->sc_quirks & FORCE_SHORT_INQUIRY) {
2277                                                 ccb->csio.dxfer_len = SHORT_INQUIRY_LENGTH;
2278                                         }
2279                                 } else if (sc->sc_transfer.cmd_data[0] == PREVENT_ALLOW) {
2280                                         if (sc->sc_quirks & NO_PREVENT_ALLOW) {
2281                                                 ccb->csio.scsi_status = SCSI_STATUS_OK;
2282                                                 ccb->ccb_h.status = CAM_REQ_CMP;
2283                                                 xpt_done(ccb);
2284                                                 goto done;
2285                                         }
2286                                 } else if (sc->sc_transfer.cmd_data[0] == SYNCHRONIZE_CACHE) {
2287                                         if (sc->sc_quirks & NO_SYNCHRONIZE_CACHE) {
2288                                                 ccb->csio.scsi_status = SCSI_STATUS_OK;
2289                                                 ccb->ccb_h.status = CAM_REQ_CMP;
2290                                                 xpt_done(ccb);
2291                                                 goto done;
2292                                         }
2293                                 }
2294                                 umass_command_start(sc, dir, ccb->csio.data_ptr,
2295                                     ccb->csio.dxfer_len,
2296                                     ccb->ccb_h.timeout,
2297                                     &umass_cam_cb, ccb);
2298                         }
2299                         break;
2300                 }
2301         case XPT_PATH_INQ:
2302                 {
2303                         struct ccb_pathinq *cpi = &ccb->cpi;
2304
2305                         DPRINTF(sc, UDMASS_SCSI, "%d:%d:%jx:XPT_PATH_INQ:.\n",
2306                             sc ? cam_sim_path(sc->sc_sim) : -1, ccb->ccb_h.target_id,
2307                             (uintmax_t)ccb->ccb_h.target_lun);
2308
2309                         /* host specific information */
2310                         cpi->version_num = 1;
2311                         cpi->hba_inquiry = 0;
2312                         cpi->target_sprt = 0;
2313                         cpi->hba_misc = PIM_NO_6_BYTE;
2314                         cpi->hba_eng_cnt = 0;
2315                         cpi->max_target = UMASS_SCSIID_MAX;     /* one target */
2316                         cpi->initiator_id = UMASS_SCSIID_HOST;
2317                         strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2318                         strlcpy(cpi->hba_vid, "USB SCSI", HBA_IDLEN);
2319                         strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
2320                         cpi->unit_number = cam_sim_unit(sim);
2321                         cpi->bus_id = sc->sc_unit;
2322                         cpi->protocol = PROTO_SCSI;
2323                         cpi->protocol_version = SCSI_REV_2;
2324                         cpi->transport = XPORT_USB;
2325                         cpi->transport_version = 0;
2326
2327                         if (sc == NULL) {
2328                                 cpi->base_transfer_speed = 0;
2329                                 cpi->max_lun = 0;
2330                         } else {
2331                                 if (sc->sc_quirks & FLOPPY_SPEED) {
2332                                         cpi->base_transfer_speed =
2333                                             UMASS_FLOPPY_TRANSFER_SPEED;
2334                                 } else {
2335                                         switch (usbd_get_speed(sc->sc_udev)) {
2336                                         case USB_SPEED_SUPER:
2337                                                 cpi->base_transfer_speed =
2338                                                     UMASS_SUPER_TRANSFER_SPEED;
2339                                                 cpi->maxio = MAXPHYS;
2340                                                 break;
2341                                         case USB_SPEED_HIGH:
2342                                                 cpi->base_transfer_speed =
2343                                                     UMASS_HIGH_TRANSFER_SPEED;
2344                                                 break;
2345                                         default:
2346                                                 cpi->base_transfer_speed =
2347                                                     UMASS_FULL_TRANSFER_SPEED;
2348                                                 break;
2349                                         }
2350                                 }
2351                                 cpi->max_lun = sc->sc_maxlun;
2352                         }
2353
2354                         cpi->ccb_h.status = CAM_REQ_CMP;
2355                         xpt_done(ccb);
2356                         break;
2357                 }
2358         case XPT_RESET_DEV:
2359                 {
2360                         DPRINTF(sc, UDMASS_SCSI, "%d:%d:%jx:XPT_RESET_DEV:.\n",
2361                             cam_sim_path(sc->sc_sim), ccb->ccb_h.target_id,
2362                             (uintmax_t)ccb->ccb_h.target_lun);
2363
2364                         umass_reset(sc);
2365
2366                         ccb->ccb_h.status = CAM_REQ_CMP;
2367                         xpt_done(ccb);
2368                         break;
2369                 }
2370         case XPT_GET_TRAN_SETTINGS:
2371                 {
2372                         struct ccb_trans_settings *cts = &ccb->cts;
2373
2374                         DPRINTF(sc, UDMASS_SCSI, "%d:%d:%jx:XPT_GET_TRAN_SETTINGS:.\n",
2375                             cam_sim_path(sc->sc_sim), ccb->ccb_h.target_id,
2376                             (uintmax_t)ccb->ccb_h.target_lun);
2377
2378                         cts->protocol = PROTO_SCSI;
2379                         cts->protocol_version = SCSI_REV_2;
2380                         cts->transport = XPORT_USB;
2381                         cts->transport_version = 0;
2382                         cts->xport_specific.valid = 0;
2383
2384                         ccb->ccb_h.status = CAM_REQ_CMP;
2385                         xpt_done(ccb);
2386                         break;
2387                 }
2388         case XPT_SET_TRAN_SETTINGS:
2389                 {
2390                         DPRINTF(sc, UDMASS_SCSI, "%d:%d:%jx:XPT_SET_TRAN_SETTINGS:.\n",
2391                             cam_sim_path(sc->sc_sim), ccb->ccb_h.target_id,
2392                             (uintmax_t)ccb->ccb_h.target_lun);
2393
2394                         ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
2395                         xpt_done(ccb);
2396                         break;
2397                 }
2398         case XPT_CALC_GEOMETRY:
2399                 {
2400                         cam_calc_geometry(&ccb->ccg, /* extended */ 1);
2401                         xpt_done(ccb);
2402                         break;
2403                 }
2404         case XPT_NOOP:
2405                 {
2406                         DPRINTF(sc, UDMASS_SCSI, "%d:%d:%jx:XPT_NOOP:.\n",
2407                             sc ? cam_sim_path(sc->sc_sim) : -1, ccb->ccb_h.target_id,
2408                             (uintmax_t)ccb->ccb_h.target_lun);
2409
2410                         ccb->ccb_h.status = CAM_REQ_CMP;
2411                         xpt_done(ccb);
2412                         break;
2413                 }
2414         default:
2415                 DPRINTF(sc, UDMASS_SCSI, "%d:%d:%jx:func_code 0x%04x: "
2416                     "Not implemented\n",
2417                     sc ? cam_sim_path(sc->sc_sim) : -1, ccb->ccb_h.target_id,
2418                     (uintmax_t)ccb->ccb_h.target_lun, ccb->ccb_h.func_code);
2419
2420                 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
2421                 xpt_done(ccb);
2422                 break;
2423         }
2424
2425 done:
2426         return;
2427 }
2428
2429 static void
2430 umass_cam_poll(struct cam_sim *sim)
2431 {
2432         struct umass_softc *sc = (struct umass_softc *)sim->softc;
2433
2434         if (sc == NULL)
2435                 return;
2436
2437         DPRINTF(sc, UDMASS_SCSI, "CAM poll\n");
2438
2439         usbd_transfer_poll(sc->sc_xfer, UMASS_T_MAX);
2440 }
2441
2442
2443 /* umass_cam_cb
2444  *      finalise a completed CAM command
2445  */
2446
2447 static void
2448 umass_cam_cb(struct umass_softc *sc, union ccb *ccb, uint32_t residue,
2449     uint8_t status)
2450 {
2451         ccb->csio.resid = residue;
2452
2453         switch (status) {
2454         case STATUS_CMD_OK:
2455                 ccb->ccb_h.status = CAM_REQ_CMP;
2456                 if ((sc->sc_quirks & READ_CAPACITY_OFFBY1) &&
2457                     (ccb->ccb_h.func_code == XPT_SCSI_IO) &&
2458                     (ccb->csio.cdb_io.cdb_bytes[0] == READ_CAPACITY)) {
2459                         struct scsi_read_capacity_data *rcap;
2460                         uint32_t maxsector;
2461
2462                         rcap = (void *)(ccb->csio.data_ptr);
2463                         maxsector = scsi_4btoul(rcap->addr) - 1;
2464                         scsi_ulto4b(maxsector, rcap->addr);
2465                 }
2466                 /*
2467                  * We have to add SVPD_UNIT_SERIAL_NUMBER to the list
2468                  * of pages supported by the device - otherwise, CAM
2469                  * will never ask us for the serial number if the
2470                  * device cannot handle that by itself.
2471                  */
2472                 if (ccb->ccb_h.func_code == XPT_SCSI_IO &&
2473                     sc->sc_transfer.cmd_data[0] == INQUIRY &&
2474                     (sc->sc_transfer.cmd_data[1] & SI_EVPD) &&
2475                     sc->sc_transfer.cmd_data[2] == SVPD_SUPPORTED_PAGE_LIST &&
2476                     (usb_get_serial(sc->sc_udev)[0] != '\0')) {
2477                         struct ccb_scsiio *csio;
2478                         struct scsi_vpd_supported_page_list *page_list;
2479
2480                         csio = &ccb->csio;
2481                         page_list = (struct scsi_vpd_supported_page_list *)csio->data_ptr;
2482                         if (page_list->length + 1 < SVPD_SUPPORTED_PAGES_SIZE) {
2483                                 page_list->list[page_list->length] = SVPD_UNIT_SERIAL_NUMBER;
2484                                 page_list->length++;
2485                         }
2486                 }
2487                 xpt_done(ccb);
2488                 break;
2489
2490         case STATUS_CMD_UNKNOWN:
2491         case STATUS_CMD_FAILED:
2492
2493                 /* fetch sense data */
2494
2495                 /* the rest of the command was filled in at attach */
2496                 sc->cam_scsi_sense.length = ccb->csio.sense_len;
2497
2498                 DPRINTF(sc, UDMASS_SCSI, "Fetching %d bytes of "
2499                     "sense data\n", ccb->csio.sense_len);
2500
2501                 if (umass_std_transform(sc, ccb, &sc->cam_scsi_sense.opcode,
2502                     sizeof(sc->cam_scsi_sense))) {
2503
2504                         if ((sc->sc_quirks & FORCE_SHORT_INQUIRY) &&
2505                             (sc->sc_transfer.cmd_data[0] == INQUIRY)) {
2506                                 ccb->csio.sense_len = SHORT_INQUIRY_LENGTH;
2507                         }
2508                         umass_command_start(sc, DIR_IN, &ccb->csio.sense_data.error_code,
2509                             ccb->csio.sense_len, ccb->ccb_h.timeout,
2510                             &umass_cam_sense_cb, ccb);
2511                 }
2512                 break;
2513
2514         default:
2515                 /*
2516                  * The wire protocol failed and will hopefully have
2517                  * recovered. We return an error to CAM and let CAM
2518                  * retry the command if necessary.
2519                  */
2520                 xpt_freeze_devq(ccb->ccb_h.path, 1);
2521                 ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN;
2522                 xpt_done(ccb);
2523                 break;
2524         }
2525 }
2526
2527 /*
2528  * Finalise a completed autosense operation
2529  */
2530 static void
2531 umass_cam_sense_cb(struct umass_softc *sc, union ccb *ccb, uint32_t residue,
2532     uint8_t status)
2533 {
2534         uint8_t *cmd;
2535
2536         switch (status) {
2537         case STATUS_CMD_OK:
2538         case STATUS_CMD_UNKNOWN:
2539         case STATUS_CMD_FAILED: {
2540                 int key, sense_len;
2541
2542                 ccb->csio.sense_resid = residue;
2543                 sense_len = ccb->csio.sense_len - ccb->csio.sense_resid;
2544                 key = scsi_get_sense_key(&ccb->csio.sense_data, sense_len,
2545                                          /*show_errors*/ 1);
2546
2547                 if (ccb->csio.ccb_h.flags & CAM_CDB_POINTER) {
2548                         cmd = (uint8_t *)(ccb->csio.cdb_io.cdb_ptr);
2549                 } else {
2550                         cmd = (uint8_t *)(ccb->csio.cdb_io.cdb_bytes);
2551                 }
2552
2553                 /*
2554                  * Getting sense data always succeeds (apart from wire
2555                  * failures):
2556                  */
2557                 if ((sc->sc_quirks & RS_NO_CLEAR_UA) &&
2558                     (cmd[0] == INQUIRY) &&
2559                     (key == SSD_KEY_UNIT_ATTENTION)) {
2560                         /*
2561                          * Ignore unit attention errors in the case where
2562                          * the Unit Attention state is not cleared on
2563                          * REQUEST SENSE. They will appear again at the next
2564                          * command.
2565                          */
2566                         ccb->ccb_h.status = CAM_REQ_CMP;
2567                 } else if (key == SSD_KEY_NO_SENSE) {
2568                         /*
2569                          * No problem after all (in the case of CBI without
2570                          * CCI)
2571                          */
2572                         ccb->ccb_h.status = CAM_REQ_CMP;
2573                 } else if ((sc->sc_quirks & RS_NO_CLEAR_UA) &&
2574                             (cmd[0] == READ_CAPACITY) &&
2575                     (key == SSD_KEY_UNIT_ATTENTION)) {
2576                         /*
2577                          * Some devices do not clear the unit attention error
2578                          * on request sense. We insert a test unit ready
2579                          * command to make sure we clear the unit attention
2580                          * condition, then allow the retry to proceed as
2581                          * usual.
2582                          */
2583
2584                         xpt_freeze_devq(ccb->ccb_h.path, 1);
2585                         ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR
2586                             | CAM_AUTOSNS_VALID | CAM_DEV_QFRZN;
2587                         ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
2588
2589 #if 0
2590                         DELAY(300000);
2591 #endif
2592                         DPRINTF(sc, UDMASS_SCSI, "Doing a sneaky"
2593                             "TEST_UNIT_READY\n");
2594
2595                         /* the rest of the command was filled in at attach */
2596
2597                         if ((sc->sc_transform)(sc,
2598                             &sc->cam_scsi_test_unit_ready.opcode,
2599                             sizeof(sc->cam_scsi_test_unit_ready)) == 1) {
2600                                 umass_command_start(sc, DIR_NONE, NULL, 0,
2601                                     ccb->ccb_h.timeout,
2602                                     &umass_cam_quirk_cb, ccb);
2603                                 break;
2604                         }
2605                 } else {
2606                         xpt_freeze_devq(ccb->ccb_h.path, 1);
2607                         if (key >= 0) {
2608                                 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR
2609                                     | CAM_AUTOSNS_VALID | CAM_DEV_QFRZN;
2610                                 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
2611                         } else
2612                                 ccb->ccb_h.status = CAM_AUTOSENSE_FAIL
2613                                     | CAM_DEV_QFRZN;
2614                 }
2615                 xpt_done(ccb);
2616                 break;
2617         }
2618         default:
2619                 DPRINTF(sc, UDMASS_SCSI, "Autosense failed, "
2620                     "status %d\n", status);
2621                 xpt_freeze_devq(ccb->ccb_h.path, 1);
2622                 ccb->ccb_h.status = CAM_AUTOSENSE_FAIL | CAM_DEV_QFRZN;
2623                 xpt_done(ccb);
2624         }
2625 }
2626
2627 /*
2628  * This completion code just handles the fact that we sent a test-unit-ready
2629  * after having previously failed a READ CAPACITY with CHECK_COND.  The CCB
2630  * status for CAM is already set earlier.
2631  */
2632 static void
2633 umass_cam_quirk_cb(struct umass_softc *sc, union ccb *ccb, uint32_t residue,
2634     uint8_t status)
2635 {
2636         DPRINTF(sc, UDMASS_SCSI, "Test unit ready "
2637             "returned status %d\n", status);
2638
2639         xpt_done(ccb);
2640 }
2641
2642 /*
2643  * SCSI specific functions
2644  */
2645
2646 static uint8_t
2647 umass_scsi_transform(struct umass_softc *sc, uint8_t *cmd_ptr,
2648     uint8_t cmd_len)
2649 {
2650         if ((cmd_len == 0) ||
2651             (cmd_len > sizeof(sc->sc_transfer.cmd_data))) {
2652                 DPRINTF(sc, UDMASS_SCSI, "Invalid command "
2653                     "length: %d bytes\n", cmd_len);
2654                 return (0);             /* failure */
2655         }
2656         sc->sc_transfer.cmd_len = cmd_len;
2657
2658         switch (cmd_ptr[0]) {
2659         case TEST_UNIT_READY:
2660                 if (sc->sc_quirks & NO_TEST_UNIT_READY) {
2661                         DPRINTF(sc, UDMASS_SCSI, "Converted TEST_UNIT_READY "
2662                             "to START_UNIT\n");
2663                         memset(sc->sc_transfer.cmd_data, 0, cmd_len);
2664                         sc->sc_transfer.cmd_data[0] = START_STOP_UNIT;
2665                         sc->sc_transfer.cmd_data[4] = SSS_START;
2666                         return (1);
2667                 }
2668                 break;
2669
2670         case INQUIRY:
2671                 /*
2672                  * some drives wedge when asked for full inquiry
2673                  * information.
2674                  */
2675                 if (sc->sc_quirks & FORCE_SHORT_INQUIRY) {
2676                         memcpy(sc->sc_transfer.cmd_data, cmd_ptr, cmd_len);
2677                         sc->sc_transfer.cmd_data[4] = SHORT_INQUIRY_LENGTH;
2678                         return (1);
2679                 }
2680                 break;
2681         }
2682
2683         memcpy(sc->sc_transfer.cmd_data, cmd_ptr, cmd_len);
2684         return (1);
2685 }
2686
2687 static uint8_t
2688 umass_rbc_transform(struct umass_softc *sc, uint8_t *cmd_ptr, uint8_t cmd_len)
2689 {
2690         if ((cmd_len == 0) ||
2691             (cmd_len > sizeof(sc->sc_transfer.cmd_data))) {
2692                 DPRINTF(sc, UDMASS_SCSI, "Invalid command "
2693                     "length: %d bytes\n", cmd_len);
2694                 return (0);             /* failure */
2695         }
2696         switch (cmd_ptr[0]) {
2697                 /* these commands are defined in RBC: */
2698         case READ_10:
2699         case READ_CAPACITY:
2700         case START_STOP_UNIT:
2701         case SYNCHRONIZE_CACHE:
2702         case WRITE_10:
2703         case VERIFY_10:
2704         case INQUIRY:
2705         case MODE_SELECT_10:
2706         case MODE_SENSE_10:
2707         case TEST_UNIT_READY:
2708         case WRITE_BUFFER:
2709                 /*
2710                  * The following commands are not listed in my copy of the
2711                  * RBC specs. CAM however seems to want those, and at least
2712                  * the Sony DSC device appears to support those as well
2713                  */
2714         case REQUEST_SENSE:
2715         case PREVENT_ALLOW:
2716
2717                 memcpy(sc->sc_transfer.cmd_data, cmd_ptr, cmd_len);
2718
2719                 if ((sc->sc_quirks & RBC_PAD_TO_12) && (cmd_len < 12)) {
2720                         memset(sc->sc_transfer.cmd_data + cmd_len,
2721                             0, 12 - cmd_len);
2722                         cmd_len = 12;
2723                 }
2724                 sc->sc_transfer.cmd_len = cmd_len;
2725                 return (1);             /* success */
2726
2727                 /* All other commands are not legal in RBC */
2728         default:
2729                 DPRINTF(sc, UDMASS_SCSI, "Unsupported RBC "
2730                     "command 0x%02x\n", cmd_ptr[0]);
2731                 return (0);             /* failure */
2732         }
2733 }
2734
2735 static uint8_t
2736 umass_ufi_transform(struct umass_softc *sc, uint8_t *cmd_ptr,
2737     uint8_t cmd_len)
2738 {
2739         if ((cmd_len == 0) ||
2740             (cmd_len > sizeof(sc->sc_transfer.cmd_data))) {
2741                 DPRINTF(sc, UDMASS_SCSI, "Invalid command "
2742                     "length: %d bytes\n", cmd_len);
2743                 return (0);             /* failure */
2744         }
2745         /* An UFI command is always 12 bytes in length */
2746         sc->sc_transfer.cmd_len = UFI_COMMAND_LENGTH;
2747
2748         /* Zero the command data */
2749         memset(sc->sc_transfer.cmd_data, 0, UFI_COMMAND_LENGTH);
2750
2751         switch (cmd_ptr[0]) {
2752                 /*
2753                  * Commands of which the format has been verified. They
2754                  * should work. Copy the command into the (zeroed out)
2755                  * destination buffer.
2756                  */
2757         case TEST_UNIT_READY:
2758                 if (sc->sc_quirks & NO_TEST_UNIT_READY) {
2759                         /*
2760                          * Some devices do not support this command. Start
2761                          * Stop Unit should give the same results
2762                          */
2763                         DPRINTF(sc, UDMASS_UFI, "Converted TEST_UNIT_READY "
2764                             "to START_UNIT\n");
2765
2766                         sc->sc_transfer.cmd_data[0] = START_STOP_UNIT;
2767                         sc->sc_transfer.cmd_data[4] = SSS_START;
2768                         return (1);
2769                 }
2770                 break;
2771
2772         case REZERO_UNIT:
2773         case REQUEST_SENSE:
2774         case FORMAT_UNIT:
2775         case INQUIRY:
2776         case START_STOP_UNIT:
2777         case SEND_DIAGNOSTIC:
2778         case PREVENT_ALLOW:
2779         case READ_CAPACITY:
2780         case READ_10:
2781         case WRITE_10:
2782         case POSITION_TO_ELEMENT:       /* SEEK_10 */
2783         case WRITE_AND_VERIFY:
2784         case VERIFY:
2785         case MODE_SELECT_10:
2786         case MODE_SENSE_10:
2787         case READ_12:
2788         case WRITE_12:
2789         case READ_FORMAT_CAPACITIES:
2790                 break;
2791
2792                 /*
2793                  * SYNCHRONIZE_CACHE isn't supported by UFI, nor should it be
2794                  * required for UFI devices, so it is appropriate to fake
2795                  * success.
2796                  */
2797         case SYNCHRONIZE_CACHE:
2798                 return (2);
2799
2800         default:
2801                 DPRINTF(sc, UDMASS_SCSI, "Unsupported UFI "
2802                     "command 0x%02x\n", cmd_ptr[0]);
2803                 return (0);             /* failure */
2804         }
2805
2806         memcpy(sc->sc_transfer.cmd_data, cmd_ptr, cmd_len);
2807         return (1);                     /* success */
2808 }
2809
2810 /*
2811  * 8070i (ATAPI) specific functions
2812  */
2813 static uint8_t
2814 umass_atapi_transform(struct umass_softc *sc, uint8_t *cmd_ptr,
2815     uint8_t cmd_len)
2816 {
2817         if ((cmd_len == 0) ||
2818             (cmd_len > sizeof(sc->sc_transfer.cmd_data))) {
2819                 DPRINTF(sc, UDMASS_SCSI, "Invalid command "
2820                     "length: %d bytes\n", cmd_len);
2821                 return (0);             /* failure */
2822         }
2823         /* An ATAPI command is always 12 bytes in length. */
2824         sc->sc_transfer.cmd_len = ATAPI_COMMAND_LENGTH;
2825
2826         /* Zero the command data */
2827         memset(sc->sc_transfer.cmd_data, 0, ATAPI_COMMAND_LENGTH);
2828
2829         switch (cmd_ptr[0]) {
2830                 /*
2831                  * Commands of which the format has been verified. They
2832                  * should work. Copy the command into the destination
2833                  * buffer.
2834                  */
2835         case INQUIRY:
2836                 /*
2837                  * some drives wedge when asked for full inquiry
2838                  * information.
2839                  */
2840                 if (sc->sc_quirks & FORCE_SHORT_INQUIRY) {
2841                         memcpy(sc->sc_transfer.cmd_data, cmd_ptr, cmd_len);
2842
2843                         sc->sc_transfer.cmd_data[4] = SHORT_INQUIRY_LENGTH;
2844                         return (1);
2845                 }
2846                 break;
2847
2848         case TEST_UNIT_READY:
2849                 if (sc->sc_quirks & NO_TEST_UNIT_READY) {
2850                         DPRINTF(sc, UDMASS_SCSI, "Converted TEST_UNIT_READY "
2851                             "to START_UNIT\n");
2852                         sc->sc_transfer.cmd_data[0] = START_STOP_UNIT;
2853                         sc->sc_transfer.cmd_data[4] = SSS_START;
2854                         return (1);
2855                 }
2856                 break;
2857
2858         case REZERO_UNIT:
2859         case REQUEST_SENSE:
2860         case START_STOP_UNIT:
2861         case SEND_DIAGNOSTIC:
2862         case PREVENT_ALLOW:
2863         case READ_CAPACITY:
2864         case READ_10:
2865         case WRITE_10:
2866         case POSITION_TO_ELEMENT:       /* SEEK_10 */
2867         case SYNCHRONIZE_CACHE:
2868         case MODE_SELECT_10:
2869         case MODE_SENSE_10:
2870         case READ_BUFFER:
2871         case 0x42:                      /* READ_SUBCHANNEL */
2872         case 0x43:                      /* READ_TOC */
2873         case 0x44:                      /* READ_HEADER */
2874         case 0x47:                      /* PLAY_MSF (Play Minute/Second/Frame) */
2875         case 0x48:                      /* PLAY_TRACK */
2876         case 0x49:                      /* PLAY_TRACK_REL */
2877         case 0x4b:                      /* PAUSE */
2878         case 0x51:                      /* READ_DISK_INFO */
2879         case 0x52:                      /* READ_TRACK_INFO */
2880         case 0x54:                      /* SEND_OPC */
2881         case 0x59:                      /* READ_MASTER_CUE */
2882         case 0x5b:                      /* CLOSE_TR_SESSION */
2883         case 0x5c:                      /* READ_BUFFER_CAP */
2884         case 0x5d:                      /* SEND_CUE_SHEET */
2885         case 0xa1:                      /* BLANK */
2886         case 0xa5:                      /* PLAY_12 */
2887         case 0xa6:                      /* EXCHANGE_MEDIUM */
2888         case 0xad:                      /* READ_DVD_STRUCTURE */
2889         case 0xbb:                      /* SET_CD_SPEED */
2890         case 0xe5:                      /* READ_TRACK_INFO_PHILIPS */
2891                 break;
2892
2893         case READ_12:
2894         case WRITE_12:
2895         default:
2896                 DPRINTF(sc, UDMASS_SCSI, "Unsupported ATAPI "
2897                     "command 0x%02x - trying anyway\n",
2898                     cmd_ptr[0]);
2899                 break;
2900         }
2901
2902         memcpy(sc->sc_transfer.cmd_data, cmd_ptr, cmd_len);
2903         return (1);                     /* success */
2904 }
2905
2906 static uint8_t
2907 umass_no_transform(struct umass_softc *sc, uint8_t *cmd,
2908     uint8_t cmdlen)
2909 {
2910         return (0);                     /* failure */
2911 }
2912
2913 static uint8_t
2914 umass_std_transform(struct umass_softc *sc, union ccb *ccb,
2915     uint8_t *cmd, uint8_t cmdlen)
2916 {
2917         uint8_t retval;
2918
2919         retval = (sc->sc_transform) (sc, cmd, cmdlen);
2920
2921         if (retval == 2) {
2922                 ccb->ccb_h.status = CAM_REQ_CMP;
2923                 xpt_done(ccb);
2924                 return (0);
2925         } else if (retval == 0) {
2926                 xpt_freeze_devq(ccb->ccb_h.path, 1);
2927                 ccb->ccb_h.status = CAM_REQ_INVALID | CAM_DEV_QFRZN;
2928                 xpt_done(ccb);
2929                 return (0);
2930         }
2931         /* Command should be executed */
2932         return (1);
2933 }
2934
2935 #ifdef USB_DEBUG
2936 static void
2937 umass_bbb_dump_cbw(struct umass_softc *sc, umass_bbb_cbw_t *cbw)
2938 {
2939         uint8_t *c = cbw->CBWCDB;
2940
2941         uint32_t dlen = UGETDW(cbw->dCBWDataTransferLength);
2942         uint32_t tag = UGETDW(cbw->dCBWTag);
2943
2944         uint8_t clen = cbw->bCDBLength;
2945         uint8_t flags = cbw->bCBWFlags;
2946         uint8_t lun = cbw->bCBWLUN;
2947
2948         DPRINTF(sc, UDMASS_BBB, "CBW %d: cmd = %db "
2949             "(0x%02x%02x%02x%02x%02x%02x%s), "
2950             "data = %db, lun = %d, dir = %s\n",
2951             tag, clen,
2952             c[0], c[1], c[2], c[3], c[4], c[5], (clen > 6 ? "..." : ""),
2953             dlen, lun, (flags == CBWFLAGS_IN ? "in" :
2954             (flags == CBWFLAGS_OUT ? "out" : "<invalid>")));
2955 }
2956
2957 static void
2958 umass_bbb_dump_csw(struct umass_softc *sc, umass_bbb_csw_t *csw)
2959 {
2960         uint32_t sig = UGETDW(csw->dCSWSignature);
2961         uint32_t tag = UGETDW(csw->dCSWTag);
2962         uint32_t res = UGETDW(csw->dCSWDataResidue);
2963         uint8_t status = csw->bCSWStatus;
2964
2965         DPRINTF(sc, UDMASS_BBB, "CSW %d: sig = 0x%08x (%s), tag = 0x%08x, "
2966             "res = %d, status = 0x%02x (%s)\n",
2967             tag, sig, (sig == CSWSIGNATURE ? "valid" : "invalid"),
2968             tag, res,
2969             status, (status == CSWSTATUS_GOOD ? "good" :
2970             (status == CSWSTATUS_FAILED ? "failed" :
2971             (status == CSWSTATUS_PHASE ? "phase" : "<invalid>"))));
2972 }
2973
2974 static void
2975 umass_cbi_dump_cmd(struct umass_softc *sc, void *cmd, uint8_t cmdlen)
2976 {
2977         uint8_t *c = cmd;
2978         uint8_t dir = sc->sc_transfer.dir;
2979
2980         DPRINTF(sc, UDMASS_BBB, "cmd = %db "
2981             "(0x%02x%02x%02x%02x%02x%02x%s), "
2982             "data = %db, dir = %s\n",
2983             cmdlen,
2984             c[0], c[1], c[2], c[3], c[4], c[5], (cmdlen > 6 ? "..." : ""),
2985             sc->sc_transfer.data_len,
2986             (dir == DIR_IN ? "in" :
2987             (dir == DIR_OUT ? "out" :
2988             (dir == DIR_NONE ? "no data phase" : "<invalid>"))));
2989 }
2990
2991 static void
2992 umass_dump_buffer(struct umass_softc *sc, uint8_t *buffer, uint32_t buflen,
2993     uint32_t printlen)
2994 {
2995         uint32_t i, j;
2996         char s1[40];
2997         char s2[40];
2998         char s3[5];
2999
3000         s1[0] = '\0';
3001         s3[0] = '\0';
3002
3003         sprintf(s2, " buffer=%p, buflen=%d", buffer, buflen);
3004         for (i = 0; (i < buflen) && (i < printlen); i++) {
3005                 j = i % 16;
3006                 if (j == 0 && i != 0) {
3007                         DPRINTF(sc, UDMASS_GEN, "0x %s%s\n",
3008                             s1, s2);
3009                         s2[0] = '\0';
3010                 }
3011                 sprintf(&s1[j * 2], "%02x", buffer[i] & 0xff);
3012         }
3013         if (buflen > printlen)
3014                 sprintf(s3, " ...");
3015         DPRINTF(sc, UDMASS_GEN, "0x %s%s%s\n",
3016             s1, s2, s3);
3017 }
3018
3019 #endif