sys/cam/scsi/scsi_ch.c

   1 /*-
   2  * SPDX-License-Identifier: (BSD-2-Clause-FreeBSD AND BSD-4-Clause)
   3  *
   4  * Copyright (c) 1997 Justin T. Gibbs.
   5  * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions, and the following disclaimer,
  13  *    without modification, immediately at the beginning of the file.
  14  * 2. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 /*-
  31  * Copyright (c) 1996, 1997 Jason R. Thorpe <thorpej@and.com>
  32  * All rights reserved.
  33  *
  34  * Partially based on an autochanger driver written by Stefan Grefen
  35  * and on an autochanger driver written by the Systems Programming Group
  36  * at the University of Utah Computer Science Department.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. All advertising materials mentioning features or use of this software
  47  *    must display the following acknowledgements:
  48  *      This product includes software developed by Jason R. Thorpe
  49  *      for And Communications, http://www.and.com/
  50  * 4. The name of the author may not be used to endorse or promote products
  51  *    derived from this software without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  54  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  55  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  56  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  57  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  58  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  59  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  60  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  61  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  62  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  63  * SUCH DAMAGE.
  64  *
  65  * $NetBSD: ch.c,v 1.34 1998/08/31 22:28:06 cgd Exp $
  66  */
  67
  68 #include <sys/cdefs.h>
  69 __FBSDID("$FreeBSD$");
  70
  71 #include <sys/param.h>
  72 #include <sys/queue.h>
  73 #include <sys/systm.h>
  74 #include <sys/kernel.h>
  75 #include <sys/types.h>
  76 #include <sys/malloc.h>
  77 #include <sys/fcntl.h>
  78 #include <sys/conf.h>
  79 #include <sys/chio.h>
  80 #include <sys/errno.h>
  81 #include <sys/devicestat.h>
  82
  83 #include <cam/cam.h>
  84 #include <cam/cam_ccb.h>
  85 #include <cam/cam_periph.h>
  86 #include <cam/cam_xpt_periph.h>
  87 #include <cam/cam_debug.h>
  88
  89 #include <cam/scsi/scsi_all.h>
  90 #include <cam/scsi/scsi_message.h>
  91 #include <cam/scsi/scsi_ch.h>
  92
  93 /*
  94  * Timeout definitions for various changer related commands.  They may
  95  * be too short for some devices (especially the timeout for INITIALIZE
  96  * ELEMENT STATUS).
  97  */
  98
  99 static const u_int32_t  CH_TIMEOUT_MODE_SENSE                = 6000;
 100 static const u_int32_t  CH_TIMEOUT_MOVE_MEDIUM               = 15 * 60 * 1000;
 101 static const u_int32_t  CH_TIMEOUT_EXCHANGE_MEDIUM           = 15 * 60 * 1000;
 102 static const u_int32_t  CH_TIMEOUT_POSITION_TO_ELEMENT       = 15 * 60 * 1000;
 103 static const u_int32_t  CH_TIMEOUT_READ_ELEMENT_STATUS       = 5 * 60 * 1000;
 104 static const u_int32_t  CH_TIMEOUT_SEND_VOLTAG               = 10000;
 105 static const u_int32_t  CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS = 500000;
 106
 107 typedef enum {
 108         CH_FLAG_INVALID         = 0x001
 109 } ch_flags;
 110
 111 typedef enum {
 112         CH_STATE_PROBE,
 113         CH_STATE_NORMAL
 114 } ch_state;
 115
 116 typedef enum {
 117         CH_CCB_PROBE
 118 } ch_ccb_types;
 119
 120 typedef enum {
 121         CH_Q_NONE       = 0x00,
 122         CH_Q_NO_DBD     = 0x01,
 123         CH_Q_NO_DVCID   = 0x02
 124 } ch_quirks;
 125
 126 #define CH_Q_BIT_STRING \
 127         "\020"          \
 128         "\001NO_DBD"    \
 129         "\002NO_DVCID"
 130
 131 #define ccb_state       ppriv_field0
 132 #define ccb_bp          ppriv_ptr1
 133
 134 struct scsi_mode_sense_data {
 135         struct scsi_mode_header_6 header;
 136         struct scsi_mode_blk_desc blk_desc;
 137         union {
 138                 struct page_element_address_assignment ea;
 139                 struct page_transport_geometry_parameters tg;
 140                 struct page_device_capabilities cap;
 141         } pages;
 142 };
 143
 144 struct ch_softc {
 145         ch_flags        flags;
 146         ch_state        state;
 147         ch_quirks       quirks;
 148         union ccb       saved_ccb;
 149         struct devstat  *device_stats;
 150         struct cdev     *dev;
 151         int             open_count;
 152
 153         int             sc_picker;      /* current picker */
 154
 155         /*
 156          * The following information is obtained from the
 157          * element address assignment page.
 158          */
 159         int             sc_firsts[CHET_MAX + 1];        /* firsts */
 160         int             sc_counts[CHET_MAX + 1];        /* counts */
 161
 162         /*
 163          * The following mask defines the legal combinations
 164          * of elements for the MOVE MEDIUM command.
 165          */
 166         u_int8_t        sc_movemask[CHET_MAX + 1];
 167
 168         /*
 169          * As above, but for EXCHANGE MEDIUM.
 170          */
 171         u_int8_t        sc_exchangemask[CHET_MAX + 1];
 172
 173         /*
 174          * Quirks; see below.  XXX KDM not implemented yet
 175          */
 176         int             sc_settledelay; /* delay for settle */
 177 };
 178
 179 static  d_open_t        chopen;
 180 static  d_close_t       chclose;
 181 static  d_ioctl_t       chioctl;
 182 static  periph_init_t   chinit;
 183 static  periph_ctor_t   chregister;
 184 static  periph_oninv_t  choninvalidate;
 185 static  periph_dtor_t   chcleanup;
 186 static  periph_start_t  chstart;
 187 static  void            chasync(void *callback_arg, u_int32_t code,
 188                                 struct cam_path *path, void *arg);
 189 static  void            chdone(struct cam_periph *periph,
 190                                union ccb *done_ccb);
 191 static  int             cherror(union ccb *ccb, u_int32_t cam_flags,
 192                                 u_int32_t sense_flags);
 193 static  int             chmove(struct cam_periph *periph,
 194                                struct changer_move *cm);
 195 static  int             chexchange(struct cam_periph *periph,
 196                                    struct changer_exchange *ce);
 197 static  int             chposition(struct cam_periph *periph,
 198                                    struct changer_position *cp);
 199 static  int             chgetelemstatus(struct cam_periph *periph,
 200                                 int scsi_version, u_long cmd,
 201                                 struct changer_element_status_request *csr);
 202 static  int             chsetvoltag(struct cam_periph *periph,
 203                                     struct changer_set_voltag_request *csvr);
 204 static  int             chielem(struct cam_periph *periph,
 205                                 unsigned int timeout);
 206 static  int             chgetparams(struct cam_periph *periph);
 207 static  int             chscsiversion(struct cam_periph *periph);
 208
 209 static struct periph_driver chdriver =
 210 {
 211         chinit, "ch",
 212         TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0
 213 };
 214
 215 PERIPHDRIVER_DECLARE(ch, chdriver);
 216
 217 static struct cdevsw ch_cdevsw = {
 218         .d_version =    D_VERSION,
 219         .d_flags =      D_TRACKCLOSE,
 220         .d_open =       chopen,
 221         .d_close =      chclose,
 222         .d_ioctl =      chioctl,
 223         .d_name =       "ch",
 224 };
 225
 226 static MALLOC_DEFINE(M_SCSICH, "scsi_ch", "scsi_ch buffers");
 227
 228 static void
 229 chinit(void)
 230 {
 231         cam_status status;
 232
 233         /*
 234          * Install a global async callback.  This callback will
 235          * receive async callbacks like "new device found".
 236          */
 237         status = xpt_register_async(AC_FOUND_DEVICE, chasync, NULL, NULL);
 238
 239         if (status != CAM_REQ_CMP) {
 240                 printf("ch: Failed to attach master async callback "
 241                        "due to status 0x%x!\n", status);
 242         }
 243 }
 244
 245 static void
 246 chdevgonecb(void *arg)
 247 {
 248         struct ch_softc   *softc;
 249         struct cam_periph *periph;
 250         struct mtx *mtx;
 251         int i;
 252
 253         periph = (struct cam_periph *)arg;
 254         mtx = cam_periph_mtx(periph);
 255         mtx_lock(mtx);
 256
 257         softc = (struct ch_softc *)periph->softc;
 258         KASSERT(softc->open_count >= 0, ("Negative open count %d",
 259                 softc->open_count));
 260
 261         /*
 262          * When we get this callback, we will get no more close calls from
 263          * devfs.  So if we have any dangling opens, we need to release the
 264          * reference held for that particular context.
 265          */
 266         for (i = 0; i < softc->open_count; i++)
 267                 cam_periph_release_locked(periph);
 268
 269         softc->open_count = 0;
 270
 271         /*
 272          * Release the reference held for the device node, it is gone now.
 273          */
 274         cam_periph_release_locked(periph);
 275
 276         /*
 277          * We reference the lock directly here, instead of using
 278          * cam_periph_unlock().  The reason is that the final call to
 279          * cam_periph_release_locked() above could result in the periph
 280          * getting freed.  If that is the case, dereferencing the periph
 281          * with a cam_periph_unlock() call would cause a page fault.
 282          */
 283         mtx_unlock(mtx);
 284 }
 285
 286 static void
 287 choninvalidate(struct cam_periph *periph)
 288 {
 289         struct ch_softc *softc;
 290
 291         softc = (struct ch_softc *)periph->softc;
 292
 293         /*
 294          * De-register any async callbacks.
 295          */
 296         xpt_register_async(0, chasync, periph, periph->path);
 297
 298         softc->flags |= CH_FLAG_INVALID;
 299
 300         /*
 301          * Tell devfs this device has gone away, and ask for a callback
 302          * when it has cleaned up its state.
 303          */
 304         destroy_dev_sched_cb(softc->dev, chdevgonecb, periph);
 305 }
 306
 307 static void
 308 chcleanup(struct cam_periph *periph)
 309 {
 310         struct ch_softc *softc;
 311
 312         softc = (struct ch_softc *)periph->softc;
 313
 314         devstat_remove_entry(softc->device_stats);
 315
 316         free(softc, M_DEVBUF);
 317 }
 318
 319 static void
 320 chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg)
 321 {
 322         struct cam_periph *periph;
 323
 324         periph = (struct cam_periph *)callback_arg;
 325
 326         switch(code) {
 327         case AC_FOUND_DEVICE:
 328         {
 329                 struct ccb_getdev *cgd;
 330                 cam_status status;
 331
 332                 cgd = (struct ccb_getdev *)arg;
 333                 if (cgd == NULL)
 334                         break;
 335
 336                 if (cgd->protocol != PROTO_SCSI)
 337                         break;
 338                 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED)
 339                         break;
 340                 if (SID_TYPE(&cgd->inq_data)!= T_CHANGER)
 341                         break;
 342
 343                 /*
 344                  * Allocate a peripheral instance for
 345                  * this device and start the probe
 346                  * process.
 347                  */
 348                 status = cam_periph_alloc(chregister, choninvalidate,
 349                                           chcleanup, chstart, "ch",
 350                                           CAM_PERIPH_BIO, path,
 351                                           chasync, AC_FOUND_DEVICE, cgd);
 352
 353                 if (status != CAM_REQ_CMP
 354                  && status != CAM_REQ_INPROG)
 355                         printf("chasync: Unable to probe new device "
 356                                "due to status 0x%x\n", status);
 357
 358                 break;
 359         }
 360         default:
 361                 cam_periph_async(periph, code, path, arg);
 362                 break;
 363         }
 364 }
 365
 366 static cam_status
 367 chregister(struct cam_periph *periph, void *arg)
 368 {
 369         struct ch_softc *softc;
 370         struct ccb_getdev *cgd;
 371         struct ccb_pathinq cpi;
 372         struct make_dev_args args;
 373         int error;
 374
 375         cgd = (struct ccb_getdev *)arg;
 376         if (cgd == NULL) {
 377                 printf("chregister: no getdev CCB, can't register device\n");
 378                 return(CAM_REQ_CMP_ERR);
 379         }
 380
 381         softc = (struct ch_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
 382
 383         if (softc == NULL) {
 384                 printf("chregister: Unable to probe new device. "
 385                        "Unable to allocate softc\n");
 386                 return(CAM_REQ_CMP_ERR);
 387         }
 388
 389         bzero(softc, sizeof(*softc));
 390         softc->state = CH_STATE_PROBE;
 391         periph->softc = softc;
 392         softc->quirks = CH_Q_NONE;
 393
 394         /*
 395          * The DVCID and CURDATA bits were not introduced until the SMC
 396          * spec.  If this device claims SCSI-2 or earlier support, then it
 397          * very likely does not support these bits.
 398          */
 399         if (cgd->inq_data.version <= SCSI_REV_2)
 400                 softc->quirks |= CH_Q_NO_DVCID;
 401
 402         xpt_path_inq(&cpi, periph->path);
 403
 404         /*
 405          * Changers don't have a blocksize, and obviously don't support
 406          * tagged queueing.
 407          */
 408         cam_periph_unlock(periph);
 409         softc->device_stats = devstat_new_entry("ch",
 410                           periph->unit_number, 0,
 411                           DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS,
 412                           SID_TYPE(&cgd->inq_data) |
 413                           XPORT_DEVSTAT_TYPE(cpi.transport),
 414                           DEVSTAT_PRIORITY_OTHER);
 415
 416         /*
 417          * Acquire a reference to the periph before we create the devfs
 418          * instance for it.  We'll release this reference once the devfs
 419          * instance has been freed.
 420          */
 421         if (cam_periph_acquire(periph) != 0) {
 422                 xpt_print(periph->path, "%s: lost periph during "
 423                           "registration!\n", __func__);
 424                 cam_periph_lock(periph);
 425                 return (CAM_REQ_CMP_ERR);
 426         }
 427
 428         /* Register the device */
 429         make_dev_args_init(&args);
 430         args.mda_devsw = &ch_cdevsw;
 431         args.mda_unit = periph->unit_number;
 432         args.mda_uid = UID_ROOT;
 433         args.mda_gid = GID_OPERATOR;
 434         args.mda_mode = 0600;
 435         args.mda_si_drv1 = periph;
 436         error = make_dev_s(&args, &softc->dev, "%s%d", periph->periph_name,
 437             periph->unit_number);
 438         cam_periph_lock(periph);
 439         if (error != 0) {
 440                 cam_periph_release_locked(periph);
 441                 return (CAM_REQ_CMP_ERR);
 442         }
 443
 444         /*
 445          * Add an async callback so that we get
 446          * notified if this device goes away.
 447          */
 448         xpt_register_async(AC_LOST_DEVICE, chasync, periph, periph->path);
 449
 450         /*
 451          * Lock this periph until we are setup.
 452          * This first call can't block
 453          */
 454         (void)cam_periph_hold(periph, PRIBIO);
 455         xpt_schedule(periph, CAM_PRIORITY_DEV);
 456
 457         return(CAM_REQ_CMP);
 458 }
 459
 460 static int
 461 chopen(struct cdev *dev, int flags, int fmt, struct thread *td)
 462 {
 463         struct cam_periph *periph;
 464         struct ch_softc *softc;
 465         int error;
 466
 467         periph = (struct cam_periph *)dev->si_drv1;
 468         if (cam_periph_acquire(periph) != 0)
 469                 return (ENXIO);
 470
 471         softc = (struct ch_softc *)periph->softc;
 472
 473         cam_periph_lock(periph);
 474
 475         if (softc->flags & CH_FLAG_INVALID) {
 476                 cam_periph_release_locked(periph);
 477                 cam_periph_unlock(periph);
 478                 return(ENXIO);
 479         }
 480
 481         if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
 482                 cam_periph_unlock(periph);
 483                 cam_periph_release(periph);
 484                 return (error);
 485         }
 486
 487         /*
 488          * Load information about this changer device into the softc.
 489          */
 490         if ((error = chgetparams(periph)) != 0) {
 491                 cam_periph_unhold(periph);
 492                 cam_periph_release_locked(periph);
 493                 cam_periph_unlock(periph);
 494                 return(error);
 495         }
 496
 497         cam_periph_unhold(periph);
 498
 499         softc->open_count++;
 500
 501         cam_periph_unlock(periph);
 502
 503         return(error);
 504 }
 505
 506 static int
 507 chclose(struct cdev *dev, int flag, int fmt, struct thread *td)
 508 {
 509         struct  cam_periph *periph;
 510         struct  ch_softc *softc;
 511         struct mtx *mtx;
 512
 513         periph = (struct cam_periph *)dev->si_drv1;
 514         mtx = cam_periph_mtx(periph);
 515         mtx_lock(mtx);
 516
 517         softc = (struct ch_softc *)periph->softc;
 518         softc->open_count--;
 519
 520         cam_periph_release_locked(periph);
 521
 522         /*
 523          * We reference the lock directly here, instead of using
 524          * cam_periph_unlock().  The reason is that the call to
 525          * cam_periph_release_locked() above could result in the periph
 526          * getting freed.  If that is the case, dereferencing the periph
 527          * with a cam_periph_unlock() call would cause a page fault.
 528          *
 529          * cam_periph_release() avoids this problem using the same method,
 530          * but we're manually acquiring and dropping the lock here to
 531          * protect the open count and avoid another lock acquisition and
 532          * release.
 533          */
 534         mtx_unlock(mtx);
 535
 536         return(0);
 537 }
 538
 539 static void
 540 chstart(struct cam_periph *periph, union ccb *start_ccb)
 541 {
 542         struct ch_softc *softc;
 543
 544         softc = (struct ch_softc *)periph->softc;
 545
 546         switch (softc->state) {
 547         case CH_STATE_NORMAL:
 548         {
 549                 xpt_release_ccb(start_ccb);
 550                 break;
 551         }
 552         case CH_STATE_PROBE:
 553         {
 554                 int mode_buffer_len;
 555                 void *mode_buffer;
 556
 557                 /*
 558                  * Include the block descriptor when calculating the mode
 559                  * buffer length,
 560                  */
 561                 mode_buffer_len = sizeof(struct scsi_mode_header_6) +
 562                                   sizeof(struct scsi_mode_blk_desc) +
 563                                  sizeof(struct page_element_address_assignment);
 564
 565                 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT);
 566
 567                 if (mode_buffer == NULL) {
 568                         printf("chstart: couldn't malloc mode sense data\n");
 569                         break;
 570                 }
 571                 bzero(mode_buffer, mode_buffer_len);
 572
 573                 /*
 574                  * Get the element address assignment page.
 575                  */
 576                 scsi_mode_sense(&start_ccb->csio,
 577                                 /* retries */ 1,
 578                                 /* cbfcnp */ chdone,
 579                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
 580                                 /* dbd */ (softc->quirks & CH_Q_NO_DBD) ?
 581                                         FALSE : TRUE,
 582                                 /* pc */ SMS_PAGE_CTRL_CURRENT,
 583                                 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE,
 584                                 /* param_buf */ (u_int8_t *)mode_buffer,
 585                                 /* param_len */ mode_buffer_len,
 586                                 /* sense_len */ SSD_FULL_SIZE,
 587                                 /* timeout */ CH_TIMEOUT_MODE_SENSE);
 588
 589                 start_ccb->ccb_h.ccb_bp = NULL;
 590                 start_ccb->ccb_h.ccb_state = CH_CCB_PROBE;
 591                 xpt_action(start_ccb);
 592                 break;
 593         }
 594         }
 595 }
 596
 597 static void
 598 chdone(struct cam_periph *periph, union ccb *done_ccb)
 599 {
 600         struct ch_softc *softc;
 601         struct ccb_scsiio *csio;
 602
 603         softc = (struct ch_softc *)periph->softc;
 604         csio = &done_ccb->csio;
 605
 606         switch(done_ccb->ccb_h.ccb_state) {
 607         case CH_CCB_PROBE:
 608         {
 609                 struct scsi_mode_header_6 *mode_header;
 610                 struct page_element_address_assignment *ea;
 611                 char announce_buf[80];
 612
 613                 mode_header = (struct scsi_mode_header_6 *)csio->data_ptr;
 614
 615                 ea = (struct page_element_address_assignment *)
 616                         find_mode_page_6(mode_header);
 617
 618                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP){
 619
 620                         softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea);
 621                         softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte);
 622                         softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea);
 623                         softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse);
 624                         softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea);
 625                         softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee);
 626                         softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea);
 627                         softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte);
 628                         softc->sc_picker = softc->sc_firsts[CHET_MT];
 629
 630 #define PLURAL(c)       (c) == 1 ? "" : "s"
 631                         snprintf(announce_buf, sizeof(announce_buf),
 632                                 "%d slot%s, %d drive%s, "
 633                                 "%d picker%s, %d portal%s",
 634                                 softc->sc_counts[CHET_ST],
 635                                 PLURAL(softc->sc_counts[CHET_ST]),
 636                                 softc->sc_counts[CHET_DT],
 637                                 PLURAL(softc->sc_counts[CHET_DT]),
 638                                 softc->sc_counts[CHET_MT],
 639                                 PLURAL(softc->sc_counts[CHET_MT]),
 640                                 softc->sc_counts[CHET_IE],
 641                                 PLURAL(softc->sc_counts[CHET_IE]));
 642 #undef PLURAL
 643                         if (announce_buf[0] != '\0') {
 644                                 xpt_announce_periph(periph, announce_buf);
 645                                 xpt_announce_quirks(periph, softc->quirks,
 646                                     CH_Q_BIT_STRING);
 647                         }
 648                 } else {
 649                         int error;
 650
 651                         error = cherror(done_ccb, CAM_RETRY_SELTO,
 652                                         SF_RETRY_UA | SF_NO_PRINT);
 653                         /*
 654                          * Retry any UNIT ATTENTION type errors.  They
 655                          * are expected at boot.
 656                          */
 657                         if (error == ERESTART) {
 658                                 /*
 659                                  * A retry was scheduled, so
 660                                  * just return.
 661                                  */
 662                                 return;
 663                         } else if (error != 0) {
 664                                 struct scsi_mode_sense_6 *sms;
 665                                 int frozen, retry_scheduled;
 666
 667                                 sms = (struct scsi_mode_sense_6 *)
 668                                         done_ccb->csio.cdb_io.cdb_bytes;
 669                                 frozen = (done_ccb->ccb_h.status &
 670                                     CAM_DEV_QFRZN) != 0;
 671
 672                                 /*
 673                                  * Check to see if block descriptors were
 674                                  * disabled.  Some devices don't like that.
 675                                  * We're taking advantage of the fact that
 676                                  * the first few bytes of the 6 and 10 byte
 677                                  * mode sense commands are the same.  If
 678                                  * block descriptors were disabled, enable
 679                                  * them and re-send the command.
 680                                  */
 681                                 if ((sms->byte2 & SMS_DBD) != 0 &&
 682                                     (periph->flags & CAM_PERIPH_INVALID) == 0) {
 683                                         sms->byte2 &= ~SMS_DBD;
 684                                         xpt_action(done_ccb);
 685                                         softc->quirks |= CH_Q_NO_DBD;
 686                                         retry_scheduled = 1;
 687                                 } else
 688                                         retry_scheduled = 0;
 689
 690                                 /* Don't wedge this device's queue */
 691                                 if (frozen)
 692                                         cam_release_devq(done_ccb->ccb_h.path,
 693                                                  /*relsim_flags*/0,
 694                                                  /*reduction*/0,
 695                                                  /*timeout*/0,
 696                                                  /*getcount_only*/0);
 697
 698                                 if (retry_scheduled)
 699                                         return;
 700
 701                                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK)
 702                                     == CAM_SCSI_STATUS_ERROR)
 703                                         scsi_sense_print(&done_ccb->csio);
 704                                 else {
 705                                         xpt_print(periph->path,
 706                                             "got CAM status %#x\n",
 707                                             done_ccb->ccb_h.status);
 708                                 }
 709                                 xpt_print(periph->path, "fatal error, failed "
 710                                     "to attach to device\n");
 711
 712                                 cam_periph_invalidate(periph);
 713                         }
 714                 }
 715                 softc->state = CH_STATE_NORMAL;
 716                 free(mode_header, M_SCSICH);
 717                 /*
 718                  * Since our peripheral may be invalidated by an error
 719                  * above or an external event, we must release our CCB
 720                  * before releasing the probe lock on the peripheral.
 721                  * The peripheral will only go away once the last lock
 722                  * is removed, and we need it around for the CCB release
 723                  * operation.
 724                  */
 725                 xpt_release_ccb(done_ccb);
 726                 cam_periph_unhold(periph);
 727                 return;
 728         }
 729         default:
 730                 break;
 731         }
 732         xpt_release_ccb(done_ccb);
 733 }
 734
 735 static int
 736 cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
 737 {
 738         struct ch_softc *softc;
 739         struct cam_periph *periph;
 740
 741         periph = xpt_path_periph(ccb->ccb_h.path);
 742         softc = (struct ch_softc *)periph->softc;
 743
 744         return (cam_periph_error(ccb, cam_flags, sense_flags));
 745 }
 746
 747 static int
 748 chioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
 749 {
 750         struct cam_periph *periph;
 751         struct ch_softc *softc;
 752         int error;
 753
 754         periph = (struct cam_periph *)dev->si_drv1;
 755         cam_periph_lock(periph);
 756         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering chioctl\n"));
 757
 758         softc = (struct ch_softc *)periph->softc;
 759
 760         error = 0;
 761
 762         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 763                   ("trying to do ioctl %#lx\n", cmd));
 764
 765         /*
 766          * If this command can change the device's state, we must
 767          * have the device open for writing.
 768          */
 769         switch (cmd) {
 770         case CHIOGPICKER:
 771         case CHIOGPARAMS:
 772         case OCHIOGSTATUS:
 773         case CHIOGSTATUS:
 774                 break;
 775
 776         default:
 777                 if ((flag & FWRITE) == 0) {
 778                         cam_periph_unlock(periph);
 779                         return (EBADF);
 780                 }
 781         }
 782
 783         switch (cmd) {
 784         case CHIOMOVE:
 785                 error = chmove(periph, (struct changer_move *)addr);
 786                 break;
 787
 788         case CHIOEXCHANGE:
 789                 error = chexchange(periph, (struct changer_exchange *)addr);
 790                 break;
 791
 792         case CHIOPOSITION:
 793                 error = chposition(periph, (struct changer_position *)addr);
 794                 break;
 795
 796         case CHIOGPICKER:
 797                 *(int *)addr = softc->sc_picker - softc->sc_firsts[CHET_MT];
 798                 break;
 799
 800         case CHIOSPICKER:
 801         {
 802                 int new_picker = *(int *)addr;
 803
 804                 if (new_picker > (softc->sc_counts[CHET_MT] - 1)) {
 805                         error = EINVAL;
 806                         break;
 807                 }
 808                 softc->sc_picker = softc->sc_firsts[CHET_MT] + new_picker;
 809                 break;
 810         }
 811         case CHIOGPARAMS:
 812         {
 813                 struct changer_params *cp = (struct changer_params *)addr;
 814
 815                 cp->cp_npickers = softc->sc_counts[CHET_MT];
 816                 cp->cp_nslots = softc->sc_counts[CHET_ST];
 817                 cp->cp_nportals = softc->sc_counts[CHET_IE];
 818                 cp->cp_ndrives = softc->sc_counts[CHET_DT];
 819                 break;
 820         }
 821         case CHIOIELEM:
 822                 error = chielem(periph, *(unsigned int *)addr);
 823                 break;
 824
 825         case OCHIOGSTATUS:
 826         {
 827                 error = chgetelemstatus(periph, SCSI_REV_2, cmd,
 828                     (struct changer_element_status_request *)addr);
 829                 break;
 830         }
 831
 832         case CHIOGSTATUS:
 833         {
 834                 int scsi_version;
 835
 836                 scsi_version = chscsiversion(periph);
 837                 if (scsi_version >= SCSI_REV_0) {
 838                         error = chgetelemstatus(periph, scsi_version, cmd,
 839                             (struct changer_element_status_request *)addr);
 840                 }
 841                 else { /* unable to determine the SCSI version */
 842                         cam_periph_unlock(periph);
 843                         return (ENXIO);
 844                 }
 845                 break;
 846         }
 847
 848         case CHIOSETVOLTAG:
 849         {
 850                 error = chsetvoltag(periph,
 851                                     (struct changer_set_voltag_request *) addr);
 852                 break;
 853         }
 854
 855         /* Implement prevent/allow? */
 856
 857         default:
 858                 error = cam_periph_ioctl(periph, cmd, addr, cherror);
 859                 break;
 860         }
 861
 862         cam_periph_unlock(periph);
 863         return (error);
 864 }
 865
 866 static int
 867 chmove(struct cam_periph *periph, struct changer_move *cm)
 868 {
 869         struct ch_softc *softc;
 870         u_int16_t fromelem, toelem;
 871         union ccb *ccb;
 872         int error;
 873
 874         error = 0;
 875         softc = (struct ch_softc *)periph->softc;
 876
 877         /*
 878          * Check arguments.
 879          */
 880         if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT))
 881                 return (EINVAL);
 882         if ((cm->cm_fromunit > (softc->sc_counts[cm->cm_fromtype] - 1)) ||
 883             (cm->cm_tounit > (softc->sc_counts[cm->cm_totype] - 1)))
 884                 return (ENODEV);
 885
 886         /*
 887          * Check the request against the changer's capabilities.
 888          */
 889         if ((softc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0)
 890                 return (ENODEV);
 891
 892         /*
 893          * Calculate the source and destination elements.
 894          */
 895         fromelem = softc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit;
 896         toelem = softc->sc_firsts[cm->cm_totype] + cm->cm_tounit;
 897
 898         ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
 899
 900         scsi_move_medium(&ccb->csio,
 901                          /* retries */ 1,
 902                          /* cbfcnp */ chdone,
 903                          /* tag_action */ MSG_SIMPLE_Q_TAG,
 904                          /* tea */ softc->sc_picker,
 905                          /* src */ fromelem,
 906                          /* dst */ toelem,
 907                          /* invert */ (cm->cm_flags & CM_INVERT) ? TRUE : FALSE,
 908                          /* sense_len */ SSD_FULL_SIZE,
 909                          /* timeout */ CH_TIMEOUT_MOVE_MEDIUM);
 910
 911         error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO,
 912                                   /*sense_flags*/ SF_RETRY_UA,
 913                                   softc->device_stats);
 914
 915         xpt_release_ccb(ccb);
 916
 917         return(error);
 918 }
 919
 920 static int
 921 chexchange(struct cam_periph *periph, struct changer_exchange *ce)
 922 {
 923         struct ch_softc *softc;
 924         u_int16_t src, dst1, dst2;
 925         union ccb *ccb;
 926         int error;
 927
 928         error = 0;
 929         softc = (struct ch_softc *)periph->softc;
 930         /*
 931          * Check arguments.
 932          */
 933         if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) ||
 934             (ce->ce_sdsttype > CHET_DT))
 935                 return (EINVAL);
 936         if ((ce->ce_srcunit > (softc->sc_counts[ce->ce_srctype] - 1)) ||
 937             (ce->ce_fdstunit > (softc->sc_counts[ce->ce_fdsttype] - 1)) ||
 938             (ce->ce_sdstunit > (softc->sc_counts[ce->ce_sdsttype] - 1)))
 939                 return (ENODEV);
 940
 941         /*
 942          * Check the request against the changer's capabilities.
 943          */
 944         if (((softc->sc_exchangemask[ce->ce_srctype] &
 945              (1 << ce->ce_fdsttype)) == 0) ||
 946             ((softc->sc_exchangemask[ce->ce_fdsttype] &
 947              (1 << ce->ce_sdsttype)) == 0))
 948                 return (ENODEV);
 949
 950         /*
 951          * Calculate the source and destination elements.
 952          */
 953         src = softc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit;
 954         dst1 = softc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit;
 955         dst2 = softc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit;
 956
 957         ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
 958
 959         scsi_exchange_medium(&ccb->csio,
 960                              /* retries */ 1,
 961                              /* cbfcnp */ chdone,
 962                              /* tag_action */ MSG_SIMPLE_Q_TAG,
 963                              /* tea */ softc->sc_picker,
 964                              /* src */ src,
 965                              /* dst1 */ dst1,
 966                              /* dst2 */ dst2,
 967                              /* invert1 */ (ce->ce_flags & CE_INVERT1) ?
 968                                            TRUE : FALSE,
 969                              /* invert2 */ (ce->ce_flags & CE_INVERT2) ?
 970                                            TRUE : FALSE,
 971                              /* sense_len */ SSD_FULL_SIZE,
 972                              /* timeout */ CH_TIMEOUT_EXCHANGE_MEDIUM);
 973
 974         error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO,
 975                                   /*sense_flags*/ SF_RETRY_UA,
 976                                   softc->device_stats);
 977
 978         xpt_release_ccb(ccb);
 979
 980         return(error);
 981 }
 982
 983 static int
 984 chposition(struct cam_periph *periph, struct changer_position *cp)
 985 {
 986         struct ch_softc *softc;
 987         u_int16_t dst;
 988         union ccb *ccb;
 989         int error;
 990
 991         error = 0;
 992         softc = (struct ch_softc *)periph->softc;
 993
 994         /*
 995          * Check arguments.
 996          */
 997         if (cp->cp_type > CHET_DT)
 998                 return (EINVAL);
 999         if (cp->cp_unit > (softc->sc_counts[cp->cp_type] - 1))
1000                 return (ENODEV);
1001
1002         /*
1003          * Calculate the destination element.
1004          */
1005         dst = softc->sc_firsts[cp->cp_type] + cp->cp_unit;
1006
1007         ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1008
1009         scsi_position_to_element(&ccb->csio,
1010                                  /* retries */ 1,
1011                                  /* cbfcnp */ chdone,
1012                                  /* tag_action */ MSG_SIMPLE_Q_TAG,
1013                                  /* tea */ softc->sc_picker,
1014                                  /* dst */ dst,
1015                                  /* invert */ (cp->cp_flags & CP_INVERT) ?
1016                                               TRUE : FALSE,
1017                                  /* sense_len */ SSD_FULL_SIZE,
1018                                  /* timeout */ CH_TIMEOUT_POSITION_TO_ELEMENT);
1019
1020         error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1021                                   /*sense_flags*/ SF_RETRY_UA,
1022                                   softc->device_stats);
1023
1024         xpt_release_ccb(ccb);
1025
1026         return(error);
1027 }
1028
1029 /*
1030  * Copy a volume tag to a volume_tag struct, converting SCSI byte order
1031  * to host native byte order in the volume serial number.  The volume
1032  * label as returned by the changer is transferred to user mode as
1033  * nul-terminated string.  Volume labels are truncated at the first
1034  * space, as suggested by SCSI-2.
1035  */
1036 static  void
1037 copy_voltag(struct changer_voltag *uvoltag, struct volume_tag *voltag)
1038 {
1039         int i;
1040         for (i=0; i<CH_VOLTAG_MAXLEN; i++) {
1041                 char c = voltag->vif[i];
1042                 if (c && c != ' ')
1043                         uvoltag->cv_volid[i] = c;
1044                 else
1045                         break;
1046         }
1047         uvoltag->cv_serial = scsi_2btoul(voltag->vsn);
1048 }
1049
1050 /*
1051  * Copy an element status descriptor to a user-mode
1052  * changer_element_status structure.
1053  */
1054 static void
1055 copy_element_status(struct ch_softc *softc,
1056                     u_int16_t flags,
1057                     struct read_element_status_descriptor *desc,
1058                     struct changer_element_status *ces,
1059                     int scsi_version)
1060 {
1061         u_int16_t eaddr = scsi_2btoul(desc->eaddr);
1062         u_int16_t et;
1063         struct volume_tag *pvol_tag = NULL, *avol_tag = NULL;
1064         struct read_element_status_device_id *devid = NULL;
1065
1066         ces->ces_int_addr = eaddr;
1067         /* set up logical address in element status */
1068         for (et = CHET_MT; et <= CHET_DT; et++) {
1069                 if ((softc->sc_firsts[et] <= eaddr)
1070                     && ((softc->sc_firsts[et] + softc->sc_counts[et])
1071                         > eaddr)) {
1072                         ces->ces_addr = eaddr - softc->sc_firsts[et];
1073                         ces->ces_type = et;
1074                         break;
1075                 }
1076         }
1077
1078         ces->ces_flags = desc->flags1;
1079
1080         ces->ces_sensecode = desc->sense_code;
1081         ces->ces_sensequal = desc->sense_qual;
1082
1083         if (desc->flags2 & READ_ELEMENT_STATUS_INVERT)
1084                 ces->ces_flags |= CES_INVERT;
1085
1086         if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) {
1087                 eaddr = scsi_2btoul(desc->ssea);
1088
1089                 /* convert source address to logical format */
1090                 for (et = CHET_MT; et <= CHET_DT; et++) {
1091                         if ((softc->sc_firsts[et] <= eaddr)
1092                             && ((softc->sc_firsts[et] + softc->sc_counts[et])
1093                                 > eaddr)) {
1094                                 ces->ces_source_addr =
1095                                         eaddr - softc->sc_firsts[et];
1096                                 ces->ces_source_type = et;
1097                                 ces->ces_flags |= CES_SOURCE_VALID;
1098                                 break;
1099                         }
1100                 }
1101
1102                 if (!(ces->ces_flags & CES_SOURCE_VALID))
1103                         printf("ch: warning: could not map element source "
1104                                "address %ud to a valid element type\n",
1105                                eaddr);
1106         }
1107
1108         /*
1109          * pvoltag and avoltag are common between SCSI-2 and later versions
1110          */
1111         if (flags & READ_ELEMENT_STATUS_PVOLTAG)
1112                 pvol_tag = &desc->voltag_devid.pvoltag;
1113         if (flags & READ_ELEMENT_STATUS_AVOLTAG)
1114                 avol_tag = (flags & READ_ELEMENT_STATUS_PVOLTAG) ?
1115                     &desc->voltag_devid.voltag[1] :&desc->voltag_devid.pvoltag;
1116         /*
1117          * For SCSI-3 and later, element status can carry designator and
1118          * other information.
1119          */
1120         if (scsi_version >= SCSI_REV_SPC) {
1121                 if ((flags & READ_ELEMENT_STATUS_PVOLTAG) ^
1122                     (flags & READ_ELEMENT_STATUS_AVOLTAG))
1123                         devid = &desc->voltag_devid.pvol_and_devid.devid;
1124                 else if (!(flags & READ_ELEMENT_STATUS_PVOLTAG) &&
1125                          !(flags & READ_ELEMENT_STATUS_AVOLTAG))
1126                         devid = &desc->voltag_devid.devid;
1127                 else /* Have both PVOLTAG and AVOLTAG */
1128                         devid = &desc->voltag_devid.vol_tags_and_devid.devid;
1129         }
1130
1131         if (pvol_tag)
1132                 copy_voltag(&(ces->ces_pvoltag), pvol_tag);
1133         if (avol_tag)
1134                 copy_voltag(&(ces->ces_pvoltag), avol_tag);
1135         if (devid != NULL) {
1136                 if (devid->designator_length > 0) {
1137                         bcopy((void *)devid->designator,
1138                               (void *)ces->ces_designator,
1139                               devid->designator_length);
1140                         ces->ces_designator_length = devid->designator_length;
1141                         /*
1142                          * Make sure we are always NUL terminated.  The
1143                          * This won't matter for the binary code set,
1144                          * since the user will only pay attention to the
1145                          * length field.
1146                          */
1147                         ces->ces_designator[devid->designator_length]= '\0';
1148                 }
1149                 if (devid->piv_assoc_designator_type &
1150                     READ_ELEMENT_STATUS_PIV_SET) {
1151                         ces->ces_flags |= CES_PIV;
1152                         ces->ces_protocol_id =
1153                             READ_ELEMENT_STATUS_PROTOCOL_ID(
1154                             devid->prot_code_set);
1155                 }
1156                 ces->ces_code_set =
1157                     READ_ELEMENT_STATUS_CODE_SET(devid->prot_code_set);
1158                 ces->ces_assoc = READ_ELEMENT_STATUS_ASSOCIATION(
1159                     devid->piv_assoc_designator_type);
1160                 ces->ces_designator_type = READ_ELEMENT_STATUS_DESIGNATOR_TYPE(
1161                     devid->piv_assoc_designator_type);
1162         } else if (scsi_version > SCSI_REV_2) {
1163                 /* SCSI-SPC and No devid, no designator */
1164                 ces->ces_designator_length = 0;
1165                 ces->ces_designator[0] = '\0';
1166                 ces->ces_protocol_id = CES_PROTOCOL_ID_FCP_4;
1167         }
1168
1169         if (scsi_version <= SCSI_REV_2) {
1170                 if (desc->dt_or_obsolete.scsi_2.dt_scsi_flags &
1171                     READ_ELEMENT_STATUS_DT_IDVALID) {
1172                         ces->ces_flags |= CES_SCSIID_VALID;
1173                         ces->ces_scsi_id =
1174                             desc->dt_or_obsolete.scsi_2.dt_scsi_addr;
1175                 }
1176
1177                 if (desc->dt_or_obsolete.scsi_2.dt_scsi_addr &
1178                     READ_ELEMENT_STATUS_DT_LUVALID) {
1179                         ces->ces_flags |= CES_LUN_VALID;
1180                         ces->ces_scsi_lun =
1181                             desc->dt_or_obsolete.scsi_2.dt_scsi_flags &
1182                             READ_ELEMENT_STATUS_DT_LUNMASK;
1183                 }
1184         }
1185 }
1186
1187 static int
1188 chgetelemstatus(struct cam_periph *periph, int scsi_version, u_long cmd,
1189                 struct changer_element_status_request *cesr)
1190 {
1191         struct read_element_status_header *st_hdr;
1192         struct read_element_status_page_header *pg_hdr;
1193         struct read_element_status_descriptor *desc;
1194         caddr_t data = NULL;
1195         size_t size, desclen;
1196         u_int avail, i;
1197         int curdata, dvcid, sense_flags;
1198         int try_no_dvcid = 0;
1199         struct changer_element_status *user_data = NULL;
1200         struct ch_softc *softc;
1201         union ccb *ccb;
1202         int chet = cesr->cesr_element_type;
1203         int error = 0;
1204         int want_voltags = (cesr->cesr_flags & CESR_VOLTAGS) ? 1 : 0;
1205
1206         softc = (struct ch_softc *)periph->softc;
1207
1208         /* perform argument checking */
1209
1210         /*
1211          * Perform a range check on the cesr_element_{base,count}
1212          * request argument fields.
1213          */
1214         if ((softc->sc_counts[chet] - cesr->cesr_element_base) <= 0
1215             || (cesr->cesr_element_base + cesr->cesr_element_count)
1216                 > softc->sc_counts[chet])
1217                 return (EINVAL);
1218
1219         /*
1220          * Request one descriptor for the given element type.  This
1221          * is used to determine the size of the descriptor so that
1222          * we can allocate enough storage for all of them.  We assume
1223          * that the first one can fit into 1k.
1224          */
1225         cam_periph_unlock(periph);
1226         data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK);
1227
1228         cam_periph_lock(periph);
1229         ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1230
1231         sense_flags = SF_RETRY_UA;
1232         if (softc->quirks & CH_Q_NO_DVCID) {
1233                 dvcid = 0;
1234                 curdata = 0;
1235         } else {
1236                 dvcid = 1;
1237                 curdata = 1;
1238                 /*
1239                  * Don't print anything for an Illegal Request, because
1240                  * these flags can cause some changers to complain.  We'll
1241                  * retry without them if we get an error.
1242                  */
1243                 sense_flags |= SF_QUIET_IR;
1244         }
1245
1246 retry_einval:
1247
1248         scsi_read_element_status(&ccb->csio,
1249                                  /* retries */ 1,
1250                                  /* cbfcnp */ chdone,
1251                                  /* tag_action */ MSG_SIMPLE_Q_TAG,
1252                                  /* voltag */ want_voltags,
1253                                  /* sea */ softc->sc_firsts[chet],
1254                                  /* curdata */ curdata,
1255                                  /* dvcid */ dvcid,
1256                                  /* count */ 1,
1257                                  /* data_ptr */ data,
1258                                  /* dxfer_len */ 1024,
1259                                  /* sense_len */ SSD_FULL_SIZE,
1260                                  /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS);
1261
1262         error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1263                                   /*sense_flags*/ sense_flags,
1264                                   softc->device_stats);
1265
1266         /*
1267          * An Illegal Request sense key (only used if there is no asc/ascq)
1268          * or 0x24,0x00 for an ASC/ASCQ both map to EINVAL.  If dvcid or
1269          * curdata are set (we set both or neither), try turning them off
1270          * and see if the command is successful.
1271          */
1272         if ((error == EINVAL)
1273          && (dvcid || curdata))  {
1274                 dvcid = 0;
1275                 curdata = 0;
1276                 error = 0;
1277                 /* At this point we want to report any Illegal Request */
1278                 sense_flags &= ~SF_QUIET_IR;
1279                 try_no_dvcid = 1;
1280                 goto retry_einval;
1281         }
1282
1283         /*
1284          * In this case, we tried a read element status with dvcid and
1285          * curdata set, and it failed.  We retried without those bits, and
1286          * it succeeded.  Suggest to the user that he set a quirk, so we
1287          * don't go through the retry process the first time in the future.
1288          * This should only happen on changers that claim SCSI-3 or higher,
1289          * but don't support these bits.
1290          */
1291         if ((try_no_dvcid != 0)
1292          && (error == 0))
1293                 softc->quirks |= CH_Q_NO_DVCID;
1294
1295         if (error)
1296                 goto done;
1297         cam_periph_unlock(periph);
1298
1299         st_hdr = (struct read_element_status_header *)data;
1300         pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr +
1301                   sizeof(struct read_element_status_header));
1302         desclen = scsi_2btoul(pg_hdr->edl);
1303
1304         size = sizeof(struct read_element_status_header) +
1305                sizeof(struct read_element_status_page_header) +
1306                (desclen * cesr->cesr_element_count);
1307         /*
1308          * Reallocate storage for descriptors and get them from the
1309          * device.
1310          */
1311         free(data, M_DEVBUF);
1312         data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK);
1313
1314         cam_periph_lock(periph);
1315         scsi_read_element_status(&ccb->csio,
1316                                  /* retries */ 1,
1317                                  /* cbfcnp */ chdone,
1318                                  /* tag_action */ MSG_SIMPLE_Q_TAG,
1319                                  /* voltag */ want_voltags,
1320                                  /* sea */ softc->sc_firsts[chet]
1321                                  + cesr->cesr_element_base,
1322                                  /* curdata */ curdata,
1323                                  /* dvcid */ dvcid,
1324                                  /* count */ cesr->cesr_element_count,
1325                                  /* data_ptr */ data,
1326                                  /* dxfer_len */ size,
1327                                  /* sense_len */ SSD_FULL_SIZE,
1328                                  /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS);
1329
1330         error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1331                                   /*sense_flags*/ SF_RETRY_UA,
1332                                   softc->device_stats);
1333
1334         if (error)
1335                 goto done;
1336         cam_periph_unlock(periph);
1337
1338         /*
1339          * Fill in the user status array.
1340          */
1341         st_hdr = (struct read_element_status_header *)data;
1342         pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr +
1343                   sizeof(struct read_element_status_header));
1344         avail = scsi_2btoul(st_hdr->count);
1345
1346         if (avail != cesr->cesr_element_count) {
1347                 xpt_print(periph->path,
1348                     "warning, READ ELEMENT STATUS avail != count\n");
1349         }
1350
1351         user_data = (struct changer_element_status *)
1352                 malloc(avail * sizeof(struct changer_element_status),
1353                        M_DEVBUF, M_WAITOK | M_ZERO);
1354
1355         desc = (struct read_element_status_descriptor *)((uintptr_t)data +
1356                 sizeof(struct read_element_status_header) +
1357                 sizeof(struct read_element_status_page_header));
1358         /*
1359          * Set up the individual element status structures
1360          */
1361         for (i = 0; i < avail; ++i) {
1362                 struct changer_element_status *ces;
1363
1364                 /*
1365                  * In the changer_element_status structure, fields from
1366                  * the beginning to the field of ces_scsi_lun are common
1367                  * between SCSI-2 and SCSI-3, while all the rest are new
1368                  * from SCSI-3. In order to maintain backward compatibility
1369                  * of the chio command, the ces pointer, below, is computed
1370                  * such that it lines up with the structure boundary
1371                  * corresponding to the SCSI version.
1372                  */
1373                 ces = cmd == OCHIOGSTATUS ?
1374                     (struct changer_element_status *)
1375                     ((unsigned char *)user_data + i *
1376                      (offsetof(struct changer_element_status,ces_scsi_lun)+1)):
1377                     &user_data[i];
1378
1379                 copy_element_status(softc, pg_hdr->flags, desc,
1380                                     ces, scsi_version);
1381
1382                 desc = (struct read_element_status_descriptor *)
1383                        ((unsigned char *)desc + desclen);
1384         }
1385
1386         /* Copy element status structures out to userspace. */
1387         if (cmd == OCHIOGSTATUS)
1388                 error = copyout(user_data,
1389                                 cesr->cesr_element_status,
1390                                 avail* (offsetof(struct changer_element_status,
1391                                 ces_scsi_lun) + 1));
1392         else
1393                 error = copyout(user_data,
1394                                 cesr->cesr_element_status,
1395                                 avail * sizeof(struct changer_element_status));
1396
1397         cam_periph_lock(periph);
1398
1399  done:
1400         xpt_release_ccb(ccb);
1401
1402         if (data != NULL)
1403                 free(data, M_DEVBUF);
1404         if (user_data != NULL)
1405                 free(user_data, M_DEVBUF);
1406
1407         return (error);
1408 }
1409
1410 static int
1411 chielem(struct cam_periph *periph,
1412         unsigned int timeout)
1413 {
1414         union ccb *ccb;
1415         struct ch_softc *softc;
1416         int error;
1417
1418         if (!timeout) {
1419                 timeout = CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS;
1420         } else {
1421                 timeout *= 1000;
1422         }
1423
1424         error = 0;
1425         softc = (struct ch_softc *)periph->softc;
1426
1427         ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1428
1429         scsi_initialize_element_status(&ccb->csio,
1430                                       /* retries */ 1,
1431                                       /* cbfcnp */ chdone,
1432                                       /* tag_action */ MSG_SIMPLE_Q_TAG,
1433                                       /* sense_len */ SSD_FULL_SIZE,
1434                                       /* timeout */ timeout);
1435
1436         error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1437                                   /*sense_flags*/ SF_RETRY_UA,
1438                                   softc->device_stats);
1439
1440         xpt_release_ccb(ccb);
1441
1442         return(error);
1443 }
1444
1445 static int
1446 chsetvoltag(struct cam_periph *periph,
1447             struct changer_set_voltag_request *csvr)
1448 {
1449         union ccb *ccb;
1450         struct ch_softc *softc;
1451         u_int16_t ea;
1452         u_int8_t sac;
1453         struct scsi_send_volume_tag_parameters ssvtp;
1454         int error;
1455         int i;
1456
1457         error = 0;
1458         softc = (struct ch_softc *)periph->softc;
1459
1460         bzero(&ssvtp, sizeof(ssvtp));
1461         for (i=0; i<sizeof(ssvtp.vitf); i++) {
1462                 ssvtp.vitf[i] = ' ';
1463         }
1464
1465         /*
1466          * Check arguments.
1467          */
1468         if (csvr->csvr_type > CHET_DT)
1469                 return EINVAL;
1470         if (csvr->csvr_addr > (softc->sc_counts[csvr->csvr_type] - 1))
1471                 return ENODEV;
1472
1473         ea = softc->sc_firsts[csvr->csvr_type] + csvr->csvr_addr;
1474
1475         if (csvr->csvr_flags & CSVR_ALTERNATE) {
1476                 switch (csvr->csvr_flags & CSVR_MODE_MASK) {
1477                 case CSVR_MODE_SET:
1478                         sac = SEND_VOLUME_TAG_ASSERT_ALTERNATE;
1479                         break;
1480                 case CSVR_MODE_REPLACE:
1481                         sac = SEND_VOLUME_TAG_REPLACE_ALTERNATE;
1482                         break;
1483                 case CSVR_MODE_CLEAR:
1484                         sac = SEND_VOLUME_TAG_UNDEFINED_ALTERNATE;
1485                         break;
1486                 default:
1487                         error = EINVAL;
1488                         goto out;
1489                 }
1490         } else {
1491                 switch (csvr->csvr_flags & CSVR_MODE_MASK) {
1492                 case CSVR_MODE_SET:
1493                         sac = SEND_VOLUME_TAG_ASSERT_PRIMARY;
1494                         break;
1495                 case CSVR_MODE_REPLACE:
1496                         sac = SEND_VOLUME_TAG_REPLACE_PRIMARY;
1497                         break;
1498                 case CSVR_MODE_CLEAR:
1499                         sac = SEND_VOLUME_TAG_UNDEFINED_PRIMARY;
1500                         break;
1501                 default:
1502                         error = EINVAL;
1503                         goto out;
1504                 }
1505         }
1506
1507         memcpy(ssvtp.vitf, csvr->csvr_voltag.cv_volid,
1508                min(strlen(csvr->csvr_voltag.cv_volid), sizeof(ssvtp.vitf)));
1509         scsi_ulto2b(csvr->csvr_voltag.cv_serial, ssvtp.minvsn);
1510
1511         ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1512
1513         scsi_send_volume_tag(&ccb->csio,
1514                              /* retries */ 1,
1515                              /* cbfcnp */ chdone,
1516                              /* tag_action */ MSG_SIMPLE_Q_TAG,
1517                              /* element_address */ ea,
1518                              /* send_action_code */ sac,
1519                              /* parameters */ &ssvtp,
1520                              /* sense_len */ SSD_FULL_SIZE,
1521                              /* timeout */ CH_TIMEOUT_SEND_VOLTAG);
1522
1523         error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1524                                   /*sense_flags*/ SF_RETRY_UA,
1525                                   softc->device_stats);
1526
1527         xpt_release_ccb(ccb);
1528
1529  out:
1530         return error;
1531 }
1532
1533 static int
1534 chgetparams(struct cam_periph *periph)
1535 {
1536         union ccb *ccb;
1537         struct ch_softc *softc;
1538         void *mode_buffer;
1539         int mode_buffer_len;
1540         struct page_element_address_assignment *ea;
1541         struct page_device_capabilities *cap;
1542         int error, from, dbd;
1543         u_int8_t *moves, *exchanges;
1544
1545         error = 0;
1546
1547         softc = (struct ch_softc *)periph->softc;
1548
1549         ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1550
1551         /*
1552          * The scsi_mode_sense_data structure is just a convenience
1553          * structure that allows us to easily calculate the worst-case
1554          * storage size of the mode sense buffer.
1555          */
1556         mode_buffer_len = sizeof(struct scsi_mode_sense_data);
1557
1558         mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT);
1559
1560         if (mode_buffer == NULL) {
1561                 printf("chgetparams: couldn't malloc mode sense data\n");
1562                 xpt_release_ccb(ccb);
1563                 return(ENOSPC);
1564         }
1565
1566         bzero(mode_buffer, mode_buffer_len);
1567
1568         if (softc->quirks & CH_Q_NO_DBD)
1569                 dbd = FALSE;
1570         else
1571                 dbd = TRUE;
1572
1573         /*
1574          * Get the element address assignment page.
1575          */
1576         scsi_mode_sense(&ccb->csio,
1577                         /* retries */ 1,
1578                         /* cbfcnp */ chdone,
1579                         /* tag_action */ MSG_SIMPLE_Q_TAG,
1580                         /* dbd */ dbd,
1581                         /* pc */ SMS_PAGE_CTRL_CURRENT,
1582                         /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE,
1583                         /* param_buf */ (u_int8_t *)mode_buffer,
1584                         /* param_len */ mode_buffer_len,
1585                         /* sense_len */ SSD_FULL_SIZE,
1586                         /* timeout */ CH_TIMEOUT_MODE_SENSE);
1587
1588         error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1589                                   /* sense_flags */ SF_RETRY_UA|SF_NO_PRINT,
1590                                   softc->device_stats);
1591
1592         if (error) {
1593                 if (dbd) {
1594                         struct scsi_mode_sense_6 *sms;
1595
1596                         sms = (struct scsi_mode_sense_6 *)
1597                                 ccb->csio.cdb_io.cdb_bytes;
1598
1599                         sms->byte2 &= ~SMS_DBD;
1600                         error = cam_periph_runccb(ccb, cherror,
1601                                                   /*cam_flags*/ CAM_RETRY_SELTO,
1602                                                   /*sense_flags*/ SF_RETRY_UA,
1603                                                   softc->device_stats);
1604                 } else {
1605                         /*
1606                          * Since we disabled sense printing above, print
1607                          * out the sense here since we got an error.
1608                          */
1609                         scsi_sense_print(&ccb->csio);
1610                 }
1611
1612                 if (error) {
1613                         xpt_print(periph->path,
1614                             "chgetparams: error getting element "
1615                             "address page\n");
1616                         xpt_release_ccb(ccb);
1617                         free(mode_buffer, M_SCSICH);
1618                         return(error);
1619                 }
1620         }
1621
1622         ea = (struct page_element_address_assignment *)
1623                 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer);
1624
1625         softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea);
1626         softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte);
1627         softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea);
1628         softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse);
1629         softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea);
1630         softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee);
1631         softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea);
1632         softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte);
1633
1634         bzero(mode_buffer, mode_buffer_len);
1635
1636         /*
1637          * Now get the device capabilities page.
1638          */
1639         scsi_mode_sense(&ccb->csio,
1640                         /* retries */ 1,
1641                         /* cbfcnp */ chdone,
1642                         /* tag_action */ MSG_SIMPLE_Q_TAG,
1643                         /* dbd */ dbd,
1644                         /* pc */ SMS_PAGE_CTRL_CURRENT,
1645                         /* page */ CH_DEVICE_CAP_PAGE,
1646                         /* param_buf */ (u_int8_t *)mode_buffer,
1647                         /* param_len */ mode_buffer_len,
1648                         /* sense_len */ SSD_FULL_SIZE,
1649                         /* timeout */ CH_TIMEOUT_MODE_SENSE);
1650
1651         error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1652                                   /* sense_flags */ SF_RETRY_UA | SF_NO_PRINT,
1653                                   softc->device_stats);
1654
1655         if (error) {
1656                 if (dbd) {
1657                         struct scsi_mode_sense_6 *sms;
1658
1659                         sms = (struct scsi_mode_sense_6 *)
1660                                 ccb->csio.cdb_io.cdb_bytes;
1661
1662                         sms->byte2 &= ~SMS_DBD;
1663                         error = cam_periph_runccb(ccb, cherror,
1664                                                   /*cam_flags*/ CAM_RETRY_SELTO,
1665                                                   /*sense_flags*/ SF_RETRY_UA,
1666                                                   softc->device_stats);
1667                 } else {
1668                         /*
1669                          * Since we disabled sense printing above, print
1670                          * out the sense here since we got an error.
1671                          */
1672                         scsi_sense_print(&ccb->csio);
1673                 }
1674
1675                 if (error) {
1676                         xpt_print(periph->path,
1677                             "chgetparams: error getting device "
1678                             "capabilities page\n");
1679                         xpt_release_ccb(ccb);
1680                         free(mode_buffer, M_SCSICH);
1681                         return(error);
1682                 }
1683         }
1684
1685         xpt_release_ccb(ccb);
1686
1687         cap = (struct page_device_capabilities *)
1688                 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer);
1689
1690         bzero(softc->sc_movemask, sizeof(softc->sc_movemask));
1691         bzero(softc->sc_exchangemask, sizeof(softc->sc_exchangemask));
1692         moves = cap->move_from;
1693         exchanges = cap->exchange_with;
1694         for (from = CHET_MT; from <= CHET_MAX; ++from) {
1695                 softc->sc_movemask[from] = moves[from];
1696                 softc->sc_exchangemask[from] = exchanges[from];
1697         }
1698
1699         free(mode_buffer, M_SCSICH);
1700
1701         return(error);
1702 }
1703
1704 static int
1705 chscsiversion(struct cam_periph *periph)
1706 {
1707         struct scsi_inquiry_data *inq_data;
1708         struct ccb_getdev *cgd;
1709         int dev_scsi_version;
1710
1711         cam_periph_assert(periph, MA_OWNED);
1712         if ((cgd = (struct ccb_getdev *)xpt_alloc_ccb_nowait()) == NULL)
1713                 return (-1);
1714         /*
1715          * Get the device information.
1716          */
1717         xpt_setup_ccb(&cgd->ccb_h,
1718                       periph->path,
1719                       CAM_PRIORITY_NORMAL);
1720         cgd->ccb_h.func_code = XPT_GDEV_TYPE;
1721         xpt_action((union ccb *)cgd);
1722
1723         if (cgd->ccb_h.status != CAM_REQ_CMP) {
1724                 xpt_free_ccb((union ccb *)cgd);
1725                 return -1;
1726         }
1727
1728         inq_data = &cgd->inq_data;
1729         dev_scsi_version = inq_data->version;
1730         xpt_free_ccb((union ccb *)cgd);
1731
1732         return dev_scsi_version;
1733 }
1734
1735 void
1736 scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries,
1737                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1738                  u_int8_t tag_action, u_int32_t tea, u_int32_t src,
1739                  u_int32_t dst, int invert, u_int8_t sense_len,
1740                  u_int32_t timeout)
1741 {
1742         struct scsi_move_medium *scsi_cmd;
1743
1744         scsi_cmd = (struct scsi_move_medium *)&csio->cdb_io.cdb_bytes;
1745         bzero(scsi_cmd, sizeof(*scsi_cmd));
1746
1747         scsi_cmd->opcode = MOVE_MEDIUM;
1748
1749         scsi_ulto2b(tea, scsi_cmd->tea);
1750         scsi_ulto2b(src, scsi_cmd->src);
1751         scsi_ulto2b(dst, scsi_cmd->dst);
1752
1753         if (invert)
1754                 scsi_cmd->invert |= MOVE_MEDIUM_INVERT;
1755
1756         cam_fill_csio(csio,
1757                       retries,
1758                       cbfcnp,
1759                       /*flags*/ CAM_DIR_NONE,
1760                       tag_action,
1761                       /*data_ptr*/ NULL,
1762                       /*dxfer_len*/ 0,
1763                       sense_len,
1764                       sizeof(*scsi_cmd),
1765                       timeout);
1766 }
1767
1768 void
1769 scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries,
1770                      void (*cbfcnp)(struct cam_periph *, union ccb *),
1771                      u_int8_t tag_action, u_int32_t tea, u_int32_t src,
1772                      u_int32_t dst1, u_int32_t dst2, int invert1,
1773                      int invert2, u_int8_t sense_len, u_int32_t timeout)
1774 {
1775         struct scsi_exchange_medium *scsi_cmd;
1776
1777         scsi_cmd = (struct scsi_exchange_medium *)&csio->cdb_io.cdb_bytes;
1778         bzero(scsi_cmd, sizeof(*scsi_cmd));
1779
1780         scsi_cmd->opcode = EXCHANGE_MEDIUM;
1781
1782         scsi_ulto2b(tea, scsi_cmd->tea);
1783         scsi_ulto2b(src, scsi_cmd->src);
1784         scsi_ulto2b(dst1, scsi_cmd->fdst);
1785         scsi_ulto2b(dst2, scsi_cmd->sdst);
1786
1787         if (invert1)
1788                 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV1;
1789
1790         if (invert2)
1791                 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV2;
1792
1793         cam_fill_csio(csio,
1794                       retries,
1795                       cbfcnp,
1796                       /*flags*/ CAM_DIR_NONE,
1797                       tag_action,
1798                       /*data_ptr*/ NULL,
1799                       /*dxfer_len*/ 0,
1800                       sense_len,
1801                       sizeof(*scsi_cmd),
1802                       timeout);
1803 }
1804
1805 void
1806 scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries,
1807                          void (*cbfcnp)(struct cam_periph *, union ccb *),
1808                          u_int8_t tag_action, u_int32_t tea, u_int32_t dst,
1809                          int invert, u_int8_t sense_len, u_int32_t timeout)
1810 {
1811         struct scsi_position_to_element *scsi_cmd;
1812
1813         scsi_cmd = (struct scsi_position_to_element *)&csio->cdb_io.cdb_bytes;
1814         bzero(scsi_cmd, sizeof(*scsi_cmd));
1815
1816         scsi_cmd->opcode = POSITION_TO_ELEMENT;
1817
1818         scsi_ulto2b(tea, scsi_cmd->tea);
1819         scsi_ulto2b(dst, scsi_cmd->dst);
1820
1821         if (invert)
1822                 scsi_cmd->invert |= POSITION_TO_ELEMENT_INVERT;
1823
1824         cam_fill_csio(csio,
1825                       retries,
1826                       cbfcnp,
1827                       /*flags*/ CAM_DIR_NONE,
1828                       tag_action,
1829                       /*data_ptr*/ NULL,
1830                       /*dxfer_len*/ 0,
1831                       sense_len,
1832                       sizeof(*scsi_cmd),
1833                       timeout);
1834 }
1835
1836 void
1837 scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries,
1838                          void (*cbfcnp)(struct cam_periph *, union ccb *),
1839                          u_int8_t tag_action, int voltag, u_int32_t sea,
1840                          int curdata, int dvcid,
1841                          u_int32_t count, u_int8_t *data_ptr,
1842                          u_int32_t dxfer_len, u_int8_t sense_len,
1843                          u_int32_t timeout)
1844 {
1845         struct scsi_read_element_status *scsi_cmd;
1846
1847         scsi_cmd = (struct scsi_read_element_status *)&csio->cdb_io.cdb_bytes;
1848         bzero(scsi_cmd, sizeof(*scsi_cmd));
1849
1850         scsi_cmd->opcode = READ_ELEMENT_STATUS;
1851
1852         scsi_ulto2b(sea, scsi_cmd->sea);
1853         scsi_ulto2b(count, scsi_cmd->count);
1854         scsi_ulto3b(dxfer_len, scsi_cmd->len);
1855         if (dvcid)
1856                 scsi_cmd->flags |= READ_ELEMENT_STATUS_DVCID;
1857         if (curdata)
1858                 scsi_cmd->flags |= READ_ELEMENT_STATUS_CURDATA;
1859
1860         if (voltag)
1861                 scsi_cmd->byte2 |= READ_ELEMENT_STATUS_VOLTAG;
1862
1863         cam_fill_csio(csio,
1864                       retries,
1865                       cbfcnp,
1866                       /*flags*/ CAM_DIR_IN,
1867                       tag_action,
1868                       data_ptr,
1869                       dxfer_len,
1870                       sense_len,
1871                       sizeof(*scsi_cmd),
1872                       timeout);
1873 }
1874
1875 void
1876 scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries,
1877                                void (*cbfcnp)(struct cam_periph *, union ccb *),
1878                                u_int8_t tag_action, u_int8_t sense_len,
1879                                u_int32_t timeout)
1880 {
1881         struct scsi_initialize_element_status *scsi_cmd;
1882
1883         scsi_cmd = (struct scsi_initialize_element_status *)
1884                     &csio->cdb_io.cdb_bytes;
1885         bzero(scsi_cmd, sizeof(*scsi_cmd));
1886
1887         scsi_cmd->opcode = INITIALIZE_ELEMENT_STATUS;
1888
1889         cam_fill_csio(csio,
1890                       retries,
1891                       cbfcnp,
1892                       /*flags*/ CAM_DIR_NONE,
1893                       tag_action,
1894                       /* data_ptr */ NULL,
1895                       /* dxfer_len */ 0,
1896                       sense_len,
1897                       sizeof(*scsi_cmd),
1898                       timeout);
1899 }
1900
1901 void
1902 scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries,
1903                      void (*cbfcnp)(struct cam_periph *, union ccb *),
1904                      u_int8_t tag_action,
1905                      u_int16_t element_address,
1906                      u_int8_t send_action_code,
1907                      struct scsi_send_volume_tag_parameters *parameters,
1908                      u_int8_t sense_len, u_int32_t timeout)
1909 {
1910         struct scsi_send_volume_tag *scsi_cmd;
1911
1912         scsi_cmd = (struct scsi_send_volume_tag *) &csio->cdb_io.cdb_bytes;
1913         bzero(scsi_cmd, sizeof(*scsi_cmd));
1914
1915         scsi_cmd->opcode = SEND_VOLUME_TAG;
1916         scsi_ulto2b(element_address, scsi_cmd->ea);
1917         scsi_cmd->sac = send_action_code;
1918         scsi_ulto2b(sizeof(*parameters), scsi_cmd->pll);
1919
1920         cam_fill_csio(csio,
1921                       retries,
1922                       cbfcnp,
1923                       /*flags*/ CAM_DIR_OUT,
1924                       tag_action,
1925                       /* data_ptr */ (u_int8_t *) parameters,
1926                       sizeof(*parameters),
1927                       sense_len,
1928                       sizeof(*scsi_cmd),
1929                       timeout);
1930 }