sys/dev/scsipi/scsiconf.c

   1 /*      $NetBSD: scsiconf.c,v 1.254 2009/10/21 21:12:05 rmind Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1998, 1999, 2004 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
   9  * Simulation Facility, NASA Ames Research Center.
  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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * Originally written by Julian Elischer (julian@tfs.com)
  35  * for TRW Financial Systems for use under the MACH(2.5) operating system.
  36  *
  37  * TRW Financial Systems, in accordance with their agreement with Carnegie
  38  * Mellon University, makes this software available to CMU to distribute
  39  * or use in any manner that they see fit as long as this message is kept with
  40  * the software. For this reason TFS also grants any other persons or
  41  * organisations permission to use or modify this software.
  42  *
  43  * TFS supplies this software to be publicly redistributed
  44  * on the understanding that TFS is not responsible for the correct
  45  * functioning of this software in any circumstances.
  46  *
  47  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
  48  */
  49
  50 #include <sys/cdefs.h>
  51 __KERNEL_RCSID(0, "$NetBSD: scsiconf.c,v 1.254 2009/10/21 21:12:05 rmind Exp $");
  52
  53 #include <sys/param.h>
  54 #include <sys/systm.h>
  55 #include <sys/kernel.h>
  56 #include <sys/proc.h>
  57 #include <sys/kthread.h>
  58 #include <sys/malloc.h>
  59 #include <sys/device.h>
  60 #include <sys/conf.h>
  61 #include <sys/fcntl.h>
  62 #include <sys/scsiio.h>
  63 #include <sys/queue.h>
  64 #include <sys/simplelock.h>
  65
  66 #include <dev/scsipi/scsi_all.h>
  67 #include <dev/scsipi/scsipi_all.h>
  68 #include <dev/scsipi/scsiconf.h>
  69
  70 #include "locators.h"
  71
  72 static const struct scsipi_periphsw scsi_probe_dev = {
  73         NULL,
  74         NULL,
  75         NULL,
  76         NULL,
  77 };
  78
  79 struct scsi_initq {
  80         struct scsipi_channel *sc_channel;
  81         TAILQ_ENTRY(scsi_initq) scsi_initq;
  82 };
  83
  84 static TAILQ_HEAD(, scsi_initq) scsi_initq_head =
  85     TAILQ_HEAD_INITIALIZER(scsi_initq_head);
  86 static struct simplelock scsibus_interlock = SIMPLELOCK_INITIALIZER;
  87
  88 static int      scsi_probe_device(struct scsibus_softc *, int, int);
  89
  90 static int      scsibusmatch(device_t, cfdata_t, void *);
  91 static void     scsibusattach(device_t, device_t, void *);
  92 static int      scsibusdetach(device_t, int flags);
  93 static int      scsibusrescan(device_t, const char *, const int *);
  94 static void     scsidevdetached(device_t, device_t);
  95
  96 CFATTACH_DECL3_NEW(scsibus, sizeof(struct scsibus_softc),
  97     scsibusmatch, scsibusattach, scsibusdetach, NULL,
  98     scsibusrescan, scsidevdetached, DVF_DETACH_SHUTDOWN);
  99
 100 extern struct cfdriver scsibus_cd;
 101
 102 static dev_type_open(scsibusopen);
 103 static dev_type_close(scsibusclose);
 104 static dev_type_ioctl(scsibusioctl);
 105
 106 const struct cdevsw scsibus_cdevsw = {
 107         scsibusopen, scsibusclose, noread, nowrite, scsibusioctl,
 108         nostop, notty, nopoll, nommap, nokqfilter, D_OTHER,
 109 };
 110
 111 static int      scsibusprint(void *, const char *);
 112 static void     scsibus_config(struct scsipi_channel *, void *);
 113
 114 const struct scsipi_bustype scsi_bustype = {
 115         SCSIPI_BUSTYPE_SCSI,
 116         scsi_scsipi_cmd,
 117         scsipi_interpret_sense,
 118         scsi_print_addr,
 119         scsi_kill_pending,
 120 };
 121
 122 int
 123 scsiprint(void *aux, const char *pnp)
 124 {
 125         struct scsipi_channel *chan = aux;
 126         struct scsipi_adapter *adapt = chan->chan_adapter;
 127
 128         /* only "scsibus"es can attach to "scsi"s; easy. */
 129         if (pnp)
 130                 aprint_normal("scsibus at %s", pnp);
 131
 132         /* don't print channel if the controller says there can be only one. */
 133         if (adapt->adapt_nchannels != 1)
 134                 aprint_normal(" channel %d", chan->chan_channel);
 135
 136         return (UNCONF);
 137 }
 138
 139 static int
 140 scsibusmatch(device_t parent, cfdata_t cf, void *aux)
 141 {
 142         struct scsipi_channel *chan = aux;
 143
 144         if (chan->chan_bustype->bustype_type != SCSIPI_BUSTYPE_SCSI)
 145                 return 0;
 146
 147         if (cf->cf_loc[SCSICF_CHANNEL] != chan->chan_channel &&
 148             cf->cf_loc[SCSICF_CHANNEL] != SCSICF_CHANNEL_DEFAULT)
 149                 return (0);
 150
 151         return (1);
 152 }
 153
 154 static void
 155 scsibusattach(device_t parent, device_t self, void *aux)
 156 {
 157         struct scsibus_softc *sc = device_private(self);
 158         struct scsipi_channel *chan = aux;
 159         struct scsi_initq *scsi_initq;
 160
 161         if (!pmf_device_register(self, NULL, NULL))
 162                 aprint_error_dev(self, "couldn't establish power handler\n");
 163
 164         sc->sc_dev = self;
 165         sc->sc_channel = chan;
 166         chan->chan_name = device_xname(sc->sc_dev);
 167
 168         aprint_naive(": SCSI bus\n");
 169         aprint_normal(": %d target%s, %d lun%s per target\n",
 170             chan->chan_ntargets,
 171             chan->chan_ntargets == 1 ? "" : "s",
 172             chan->chan_nluns,
 173             chan->chan_nluns == 1 ? "" : "s");
 174
 175         if (scsipi_adapter_addref(chan->chan_adapter))
 176                 return;
 177
 178         /* Initialize the channel structure first */
 179         chan->chan_init_cb = scsibus_config;
 180         chan->chan_init_cb_arg = sc;
 181
 182         scsi_initq = malloc(sizeof(struct scsi_initq), M_DEVBUF, M_WAITOK);
 183         scsi_initq->sc_channel = chan;
 184         TAILQ_INSERT_TAIL(&scsi_initq_head, scsi_initq, scsi_initq);
 185         config_pending_incr();
 186         if (scsipi_channel_init(chan)) {
 187                 aprint_error_dev(sc->sc_dev, "failed to init channel\n");
 188                 return;
 189         }
 190 }
 191
 192 static void
 193 scsibus_config(struct scsipi_channel *chan, void *arg)
 194 {
 195         struct scsibus_softc *sc = arg;
 196         struct scsi_initq *scsi_initq;
 197
 198 #ifndef SCSI_DELAY
 199 #define SCSI_DELAY 2
 200 #endif
 201         if ((chan->chan_flags & SCSIPI_CHAN_NOSETTLE) == 0 &&
 202             SCSI_DELAY > 0) {
 203                 aprint_normal_dev(sc->sc_dev,
 204                     "waiting %d seconds for devices to settle...\n",
 205                     SCSI_DELAY);
 206                 /* ...an identifier we know no one will use... */
 207                 (void) tsleep(scsibus_config, PRIBIO,
 208                     "scsidly", SCSI_DELAY * hz);
 209         }
 210
 211         /* Make sure the devices probe in scsibus order to avoid jitter. */
 212         simple_lock(&scsibus_interlock);
 213         for (;;) {
 214                 scsi_initq = TAILQ_FIRST(&scsi_initq_head);
 215                 if (scsi_initq->sc_channel == chan)
 216                         break;
 217                 ltsleep(&scsi_initq_head, PRIBIO, "scsi_initq", 0,
 218                     &scsibus_interlock);
 219         }
 220
 221         simple_unlock(&scsibus_interlock);
 222
 223         scsi_probe_bus(sc, -1, -1);
 224
 225         simple_lock(&scsibus_interlock);
 226         TAILQ_REMOVE(&scsi_initq_head, scsi_initq, scsi_initq);
 227         simple_unlock(&scsibus_interlock);
 228
 229         free(scsi_initq, M_DEVBUF);
 230         wakeup(&scsi_initq_head);
 231
 232         scsipi_adapter_delref(chan->chan_adapter);
 233
 234         config_pending_decr();
 235 }
 236
 237 static int
 238 scsibusdetach(device_t self, int flags)
 239 {
 240         struct scsibus_softc *sc = device_private(self);
 241         struct scsipi_channel *chan = sc->sc_channel;
 242         struct scsipi_periph *periph;
 243         int ctarget, clun;
 244         struct scsipi_xfer *xs;
 245         int error;
 246
 247         pmf_device_deregister(self);
 248
 249         /*
 250          * Process outstanding commands (which will never complete as the
 251          * controller is gone).
 252          */
 253         for (ctarget = 0; ctarget < chan->chan_ntargets; ctarget++) {
 254                 if (ctarget == chan->chan_id)
 255                         continue;
 256                 for (clun = 0; clun < chan->chan_nluns; clun++) {
 257                         periph = scsipi_lookup_periph(chan, ctarget, clun);
 258                         if (periph == NULL)
 259                                 continue;
 260                         TAILQ_FOREACH(xs, &periph->periph_xferq, device_q) {
 261                                 callout_stop(&xs->xs_callout);
 262                                 xs->error = XS_DRIVER_STUFFUP;
 263                                 scsipi_done(xs);
 264                         }
 265                 }
 266         }
 267
 268         /*
 269          * Detach all of the periphs.
 270          */
 271         error = scsipi_target_detach(chan, -1, -1, flags);
 272
 273         /*
 274          * Now shut down the channel.
 275          * XXX only if no errors ?
 276          */
 277         scsipi_channel_shutdown(chan);
 278         return (error);
 279 }
 280
 281 /*
 282  * Probe the requested scsi bus. It must be already set up.
 283  * target and lun optionally narrow the search if not -1
 284  */
 285 int
 286 scsi_probe_bus(struct scsibus_softc *sc, int target, int lun)
 287 {
 288         struct scsipi_channel *chan = sc->sc_channel;
 289         int maxtarget, mintarget, maxlun, minlun;
 290         int error;
 291
 292         if (target == -1) {
 293                 maxtarget = chan->chan_ntargets - 1;
 294                 mintarget = 0;
 295         } else {
 296                 if (target < 0 || target >= chan->chan_ntargets)
 297                         return (EINVAL);
 298                 maxtarget = mintarget = target;
 299         }
 300
 301         if (lun == -1) {
 302                 maxlun = chan->chan_nluns - 1;
 303                 minlun = 0;
 304         } else {
 305                 if (lun < 0 || lun >= chan->chan_nluns)
 306                         return (EINVAL);
 307                 maxlun = minlun = lun;
 308         }
 309
 310         /*
 311          * Some HBAs provide an abstracted view of the bus; give them an
 312          * oppertunity to re-scan it before we do.
 313          */
 314         if (chan->chan_adapter->adapt_ioctl != NULL)
 315                 (*chan->chan_adapter->adapt_ioctl)(chan, SCBUSIOLLSCAN, NULL,
 316                     0, curproc);
 317
 318         if ((error = scsipi_adapter_addref(chan->chan_adapter)) != 0)
 319                 return (error);
 320         for (target = mintarget; target <= maxtarget; target++) {
 321                 if (target == chan->chan_id)
 322                         continue;
 323                 for (lun = minlun; lun <= maxlun; lun++) {
 324                         /*
 325                          * See if there's a device present, and configure it.
 326                          */
 327                         if (scsi_probe_device(sc, target, lun) == 0)
 328                                 break;
 329                         /* otherwise something says we should look further */
 330                 }
 331
 332                 /*
 333                  * Now that we've discovered all of the LUNs on this
 334                  * I_T Nexus, update the xfer mode for all of them
 335                  * that we know about.
 336                  */
 337                 scsipi_set_xfer_mode(chan, target, 1);
 338         }
 339         scsipi_adapter_delref(chan->chan_adapter);
 340         return (0);
 341 }
 342
 343 static int
 344 scsibusrescan(device_t sc, const char *ifattr,
 345     const int *locators)
 346 {
 347
 348         KASSERT(ifattr && !strcmp(ifattr, "scsibus"));
 349         KASSERT(locators);
 350
 351         return (scsi_probe_bus(device_private(sc),
 352                 locators[SCSIBUSCF_TARGET], locators[SCSIBUSCF_LUN]));
 353 }
 354
 355 static void
 356 scsidevdetached(device_t sc, device_t dev)
 357 {
 358         struct scsibus_softc *ssc = device_private(sc);
 359         struct scsipi_channel *chan = ssc->sc_channel;
 360         struct scsipi_periph *periph;
 361         int target, lun;
 362
 363         target = device_locator(dev, SCSIBUSCF_TARGET);
 364         lun = device_locator(dev, SCSIBUSCF_LUN);
 365
 366         periph = scsipi_lookup_periph(chan, target, lun);
 367         KASSERT(periph->periph_dev == dev);
 368
 369         scsipi_remove_periph(chan, periph);
 370         free(periph, M_DEVBUF);
 371 }
 372
 373 /*
 374  * Print out autoconfiguration information for a subdevice.
 375  *
 376  * This is a slight abuse of 'standard' autoconfiguration semantics,
 377  * because 'print' functions don't normally print the colon and
 378  * device information.  However, in this case that's better than
 379  * either printing redundant information before the attach message,
 380  * or having the device driver call a special function to print out
 381  * the standard device information.
 382  */
 383 static int
 384 scsibusprint(void *aux, const char *pnp)
 385 {
 386         struct scsipibus_attach_args *sa = aux;
 387         struct scsipi_inquiry_pattern *inqbuf;
 388         u_int8_t type;
 389         const char *dtype;
 390         char vendor[33], product[65], revision[17];
 391         int target, lun;
 392
 393         if (pnp != NULL)
 394                 aprint_normal("%s", pnp);
 395
 396         inqbuf = &sa->sa_inqbuf;
 397
 398         target = sa->sa_periph->periph_target;
 399         lun = sa->sa_periph->periph_lun;
 400         type = inqbuf->type & SID_TYPE;
 401
 402         dtype = scsipi_dtype(type);
 403
 404         scsipi_strvis(vendor, 33, inqbuf->vendor, 8);
 405         scsipi_strvis(product, 65, inqbuf->product, 16);
 406         scsipi_strvis(revision, 17, inqbuf->revision, 4);
 407
 408         aprint_normal(" target %d lun %d: <%s, %s, %s> %s %s",
 409             target, lun, vendor, product, revision, dtype,
 410             inqbuf->removable ? "removable" : "fixed");
 411
 412         return (UNCONF);
 413 }
 414
 415 static const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
 416         {{T_CDROM, T_REMOV,
 417          "CHINON  ", "CD-ROM CDS-431  ", ""},     PQUIRK_NOLUNS},
 418         {{T_CDROM, T_REMOV,
 419          "CHINON  ", "CD-ROM CDS-435  ", ""},     PQUIRK_NOLUNS},
 420         {{T_CDROM, T_REMOV,
 421          "Chinon  ", "CD-ROM CDS-525  ", ""},     PQUIRK_NOLUNS},
 422         {{T_CDROM, T_REMOV,
 423          "CHINON  ", "CD-ROM CDS-535  ", ""},     PQUIRK_NOLUNS},
 424         {{T_CDROM, T_REMOV,
 425          "DEC     ", "RRD42   (C) DEC ", ""},     PQUIRK_NOLUNS},
 426         {{T_CDROM, T_REMOV,
 427          "DENON   ", "DRD-25X         ", "V"},    PQUIRK_NOLUNS},
 428         {{T_CDROM, T_REMOV,
 429          "GENERIC ", "CRD-BP2         ", ""},     PQUIRK_NOLUNS},
 430         {{T_CDROM, T_REMOV,
 431          "HP      ", "C4324/C4325     ", ""},     PQUIRK_NOLUNS},
 432         {{T_CDROM, T_REMOV,
 433          "IMS     ", "CDD521/10       ", "2.06"}, PQUIRK_NOLUNS},
 434         {{T_CDROM, T_REMOV,
 435          "MATSHITA", "CD-ROM CR-5XX   ", "1.0b"}, PQUIRK_NOLUNS},
 436         {{T_CDROM, T_REMOV,
 437          "MEDAVIS ", "RENO CD-ROMX2A  ", ""},     PQUIRK_NOLUNS},
 438         {{T_CDROM, T_REMOV,
 439          "MEDIAVIS", "CDR-H93MV       ", "1.3"},  PQUIRK_NOLUNS},
 440         {{T_CDROM, T_REMOV,
 441          "NEC     ", "CD-ROM DRIVE:502", ""},     PQUIRK_NOLUNS},
 442         {{T_CDROM, T_REMOV,
 443          "NEC     ", "CD-ROM DRIVE:55 ", ""},     PQUIRK_NOLUNS},
 444         {{T_CDROM, T_REMOV,
 445          "NEC     ", "CD-ROM DRIVE:83 ", ""},     PQUIRK_NOLUNS},
 446         {{T_CDROM, T_REMOV,
 447          "NEC     ", "CD-ROM DRIVE:84 ", ""},     PQUIRK_NOLUNS},
 448         {{T_CDROM, T_REMOV,
 449          "NEC     ", "CD-ROM DRIVE:841", ""},     PQUIRK_NOLUNS},
 450         {{T_CDROM, T_REMOV,
 451          "OLYMPUS ", "CDS620E         ", "1.1d"},
 452                                PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOCAPACITY},
 453         {{T_CDROM, T_REMOV,
 454          "PIONEER ", "CD-ROM DR-124X  ", "1.01"}, PQUIRK_NOLUNS},
 455         {{T_CDROM, T_REMOV,
 456          "PLEXTOR ", "CD-ROM PX-4XCS  ", "1.01"},
 457                                PQUIRK_NOLUNS|PQUIRK_NOSYNC},
 458         {{T_CDROM, T_REMOV,
 459          "SONY    ", "CD-ROM CDU-541  ", ""},     PQUIRK_NOLUNS},
 460         {{T_CDROM, T_REMOV,
 461          "SONY    ", "CD-ROM CDU-55S  ", ""},     PQUIRK_NOLUNS},
 462         {{T_CDROM, T_REMOV,
 463          "SONY    ", "CD-ROM CDU-561  ", ""},     PQUIRK_NOLUNS},
 464         {{T_CDROM, T_REMOV,
 465          "SONY    ", "CD-ROM CDU-76S", ""},
 466                                 PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOWIDE},
 467         {{T_CDROM, T_REMOV,
 468          "SONY    ", "CD-ROM CDU-8003A", ""},     PQUIRK_NOLUNS},
 469         {{T_CDROM, T_REMOV,
 470          "SONY    ", "CD-ROM CDU-8012 ", ""},     PQUIRK_NOLUNS},
 471         {{T_CDROM, T_REMOV,
 472          "TEAC    ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
 473         {{T_CDROM, T_REMOV,
 474          "TEAC    ", "CD-ROM CD-56S   ", "1.0B"}, PQUIRK_NOLUNS},
 475         {{T_CDROM, T_REMOV,
 476          "TEXEL   ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
 477         {{T_CDROM, T_REMOV,
 478          "TEXEL   ", "CD-ROM DM-XX24 K", "1.09"}, PQUIRK_NOLUNS},
 479         {{T_CDROM, T_REMOV,
 480          "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, PQUIRK_NOLUNS},
 481         {{T_CDROM, T_REMOV,
 482          "TOSHIBA ", "XM-4101TASUNSLCD", ""}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
 483         /* "IBM CDRM00201     !F" 0724 is an IBM OEM Toshiba XM-4101BME */
 484         {{T_CDROM, T_REMOV,
 485          "IBM     ", "CDRM00201     !F", "0724"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
 486         {{T_CDROM, T_REMOV,
 487          "ShinaKen", "CD-ROM DM-3x1S",   "1.04"}, PQUIRK_NOLUNS},
 488         {{T_CDROM, T_REMOV,
 489          "JVC     ", "R2626",            ""},     PQUIRK_NOLUNS},
 490         {{T_CDROM, T_REMOV,
 491          "YAMAHA", "CRW8424S",           ""},     PQUIRK_NOLUNS},
 492         {{T_CDROM, T_REMOV,
 493          "NEC     ", "CD-ROM DRIVE:222", ""},     PQUIRK_NOLUNS|PQUIRK_NOSYNC},
 494
 495         {{T_DIRECT, T_FIXED,
 496          "MICROP  ", "1588-15MBSUN0669", ""},     PQUIRK_AUTOSAVE},
 497         {{T_DIRECT, T_FIXED,
 498          "MICROP  ", "2217-15MQ1091501", ""},     PQUIRK_NOSYNCCACHE},
 499         {{T_OPTICAL, T_REMOV,
 500          "EPSON   ", "OMD-5010        ", "3.08"}, PQUIRK_NOLUNS},
 501         {{T_DIRECT, T_FIXED,
 502          "ADAPTEC ", "AEC-4412BD",       "1.2A"}, PQUIRK_NOMODESENSE},
 503         {{T_DIRECT, T_FIXED,
 504          "ADAPTEC ", "ACB-4000",         ""},     PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE|PQUIRK_NOMODESENSE},
 505         {{T_DIRECT, T_FIXED,
 506          "DEC     ", "RZ55     (C) DEC", ""},     PQUIRK_AUTOSAVE},
 507         {{T_DIRECT, T_FIXED,
 508          "EMULEX  ", "MD21/S2     ESDI", "A00"},
 509                                 PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE},
 510         {{T_DIRECT, T_FIXED,
 511          "MICROP",  "1548-15MZ1077801",  "HZ2P"}, PQUIRK_NOTAG},
 512         {{T_DIRECT, T_FIXED,
 513          "HP      ", "C372",             ""},     PQUIRK_NOTAG},
 514         {{T_DIRECT, T_FIXED,
 515          "IBMRAID ", "0662S",            ""},     PQUIRK_AUTOSAVE},
 516         {{T_DIRECT, T_FIXED,
 517          "IBM     ", "0663H",            ""},     PQUIRK_AUTOSAVE},
 518         {{T_DIRECT, T_FIXED,
 519          "IBM",      "0664",             ""},     PQUIRK_AUTOSAVE},
 520         {{T_DIRECT, T_FIXED,
 521         /* improperly report DT-only sync mode */
 522          "IBM     ", "DXHS36D",          ""},
 523                                 PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
 524         {{T_DIRECT, T_FIXED,
 525          "IBM     ", "DXHS18Y",          ""},
 526                                 PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
 527         {{T_DIRECT, T_FIXED,
 528          "IBM     ", "H3171-S2",         ""},
 529                                 PQUIRK_NOLUNS|PQUIRK_AUTOSAVE},
 530         {{T_DIRECT, T_FIXED,
 531          "IBM     ", "KZ-C",             ""},     PQUIRK_AUTOSAVE},
 532         /* Broken IBM disk */
 533         {{T_DIRECT, T_FIXED,
 534          ""        , "DFRSS2F",          ""},     PQUIRK_AUTOSAVE},
 535         {{T_DIRECT, T_FIXED,
 536          "Initio  ", "",                 ""},     PQUIRK_NOBIGMODESENSE},
 537         {{T_DIRECT, T_REMOV,
 538          "MPL     ", "MC-DISK-        ", ""},     PQUIRK_NOLUNS},
 539         {{T_DIRECT, T_FIXED,
 540          "MAXTOR  ", "XT-3280         ", ""},     PQUIRK_NOLUNS},
 541         {{T_DIRECT, T_FIXED,
 542          "MAXTOR  ", "XT-4380S        ", ""},     PQUIRK_NOLUNS},
 543         {{T_DIRECT, T_FIXED,
 544          "MAXTOR  ", "MXT-1240S       ", ""},     PQUIRK_NOLUNS},
 545         {{T_DIRECT, T_FIXED,
 546          "MAXTOR  ", "XT-4170S        ", ""},     PQUIRK_NOLUNS},
 547         {{T_DIRECT, T_FIXED,
 548          "MAXTOR  ", "XT-8760S",         ""},     PQUIRK_NOLUNS},
 549         {{T_DIRECT, T_FIXED,
 550          "MAXTOR  ", "LXT-213S        ", ""},     PQUIRK_NOLUNS},
 551         {{T_DIRECT, T_FIXED,
 552          "MAXTOR  ", "LXT-213S SUN0207", ""},     PQUIRK_NOLUNS},
 553         {{T_DIRECT, T_FIXED,
 554          "MAXTOR  ", "LXT-200S        ", ""},     PQUIRK_NOLUNS},
 555         {{T_DIRECT, T_FIXED,
 556          "MEGADRV ", "EV1000",           ""},     PQUIRK_NOMODESENSE},
 557         {{T_DIRECT, T_FIXED,
 558          "MICROP", "1991-27MZ",          ""},     PQUIRK_NOTAG},
 559         {{T_DIRECT, T_FIXED,
 560          "MST     ", "SnapLink        ", ""},     PQUIRK_NOLUNS},
 561         {{T_DIRECT, T_FIXED,
 562          "NEC     ", "D3847           ", "0307"}, PQUIRK_NOLUNS},
 563         {{T_DIRECT, T_FIXED,
 564          "QUANTUM ", "ELS85S          ", ""},     PQUIRK_AUTOSAVE},
 565         {{T_DIRECT, T_FIXED,
 566          "QUANTUM ", "LPS525S         ", ""},     PQUIRK_NOLUNS},
 567         {{T_DIRECT, T_FIXED,
 568          "QUANTUM ", "P105S 910-10-94x", ""},     PQUIRK_NOLUNS},
 569         {{T_DIRECT, T_FIXED,
 570          "QUANTUM ", "PD1225S         ", ""},     PQUIRK_NOLUNS},
 571         {{T_DIRECT, T_FIXED,
 572          "QUANTUM ", "PD210S   SUN0207", ""},     PQUIRK_NOLUNS},
 573         {{T_DIRECT, T_FIXED,
 574          "QUANTUM ", "ATLAS IV 9 WLS", "0A0A"},   PQUIRK_CAP_NODT},
 575         {{T_DIRECT, T_FIXED,
 576          "RODIME  ", "RO3000S         ", ""},     PQUIRK_NOLUNS},
 577         {{T_DIRECT, T_FIXED,
 578          "SEAGATE ", "ST125N          ", ""},     PQUIRK_NOLUNS},
 579         {{T_DIRECT, T_FIXED,
 580          "SEAGATE ", "ST157N          ", ""},     PQUIRK_NOLUNS},
 581         {{T_DIRECT, T_FIXED,
 582          "SEAGATE ", "ST296           ", ""},     PQUIRK_NOLUNS},
 583         {{T_DIRECT, T_FIXED,
 584          "SEAGATE ", "ST296N          ", ""},     PQUIRK_NOLUNS},
 585         {{T_DIRECT, T_FIXED,
 586          "SEAGATE ", "ST318404LC      ", ""},     PQUIRK_NOLUNS},
 587         {{T_DIRECT, T_FIXED,
 588          "SEAGATE ", "ST15150N        ", ""},     PQUIRK_NOTAG},
 589         {{T_DIRECT, T_FIXED,
 590          "SEAGATE ", "ST19171",          ""},     PQUIRK_NOMODESENSE},
 591         {{T_DIRECT, T_FIXED,
 592          "SEAGATE ", "ST32430N",         ""},     PQUIRK_CAP_SYNC},
 593         {{T_DIRECT, T_FIXED,
 594          "SEAGATE ", "ST34501FC       ", ""},     PQUIRK_NOMODESENSE},
 595         {{T_DIRECT, T_FIXED,
 596          "SEAGATE ", "SX910800N",        ""},     PQUIRK_NOTAG},
 597         {{T_DIRECT, T_FIXED,
 598          "TOSHIBA ", "MK538FB         ", "6027"}, PQUIRK_NOLUNS},
 599         {{T_DIRECT, T_FIXED,
 600          "MICROP  ", "1924",          ""},     PQUIRK_CAP_SYNC},
 601         {{T_DIRECT, T_FIXED,
 602          "FUJITSU ", "M2266",         ""},     PQUIRK_CAP_SYNC},
 603         {{T_DIRECT, T_FIXED,
 604          "FUJITSU ", "M2624S-512      ", ""},     PQUIRK_CAP_SYNC},
 605         {{T_DIRECT, T_FIXED,
 606          "SEAGATE ", "SX336704LC"   , ""}, PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
 607
 608         {{T_DIRECT, T_REMOV,
 609          "IOMEGA", "ZIP 100",            "J.03"}, PQUIRK_NOLUNS},
 610         {{T_DIRECT, T_REMOV,
 611          "INSITE", "I325VM",             ""},     PQUIRK_NOLUNS},
 612
 613         /* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
 614         {{T_SEQUENTIAL, T_REMOV,
 615          "        ", "                ", "    "}, PQUIRK_NOLUNS},
 616         {{T_SEQUENTIAL, T_REMOV,
 617          "EMULEX  ", "MT-02 QIC       ", ""},     PQUIRK_NOLUNS},
 618         {{T_SEQUENTIAL, T_REMOV,
 619          "CALIPER ", "CP150           ", ""},     PQUIRK_NOLUNS},
 620         {{T_SEQUENTIAL, T_REMOV,
 621          "EXABYTE ", "EXB-8200        ", ""},     PQUIRK_NOLUNS},
 622         {{T_SEQUENTIAL, T_REMOV,
 623          "SONY    ", "GY-10C          ", ""},     PQUIRK_NOLUNS},
 624         {{T_SEQUENTIAL, T_REMOV,
 625          "SONY    ", "SDT-2000        ", "2.09"}, PQUIRK_NOLUNS},
 626         {{T_SEQUENTIAL, T_REMOV,
 627          "SONY    ", "SDT-5000        ", "3."},   PQUIRK_NOSYNC|PQUIRK_NOWIDE},
 628         {{T_SEQUENTIAL, T_REMOV,
 629          "SONY    ", "SDT-5200        ", "3."},   PQUIRK_NOLUNS},
 630         {{T_SEQUENTIAL, T_REMOV,
 631          "TANDBERG", " TDC 3600       ", ""},     PQUIRK_NOLUNS},
 632         /* Following entry reported as a Tandberg 3600; ref. PR1933 */
 633         {{T_SEQUENTIAL, T_REMOV,
 634          "ARCHIVE ", "VIPER 150  21247", ""},     PQUIRK_NOLUNS},
 635         /* Following entry for a Cipher ST150S; ref. PR4171 */
 636         {{T_SEQUENTIAL, T_REMOV,
 637          "ARCHIVE ", "VIPER 1500 21247", "2.2G"}, PQUIRK_NOLUNS},
 638         {{T_SEQUENTIAL, T_REMOV,
 639          "ARCHIVE ", "Python 28454-XXX", ""},     PQUIRK_NOLUNS},
 640         {{T_SEQUENTIAL, T_REMOV,
 641          "WANGTEK ", "5099ES SCSI",      ""},     PQUIRK_NOLUNS},
 642         {{T_SEQUENTIAL, T_REMOV,
 643          "WANGTEK ", "5150ES SCSI",      ""},     PQUIRK_NOLUNS},
 644         {{T_SEQUENTIAL, T_REMOV,
 645          "WANGTEK ", "SCSI-36",          ""},     PQUIRK_NOLUNS},
 646         {{T_SEQUENTIAL, T_REMOV,
 647          "WangDAT ", "Model 1300      ", "02.4"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
 648         {{T_SEQUENTIAL, T_REMOV,
 649          "WangDAT ", "Model 2600      ", "01.7"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
 650         {{T_SEQUENTIAL, T_REMOV,
 651          "WangDAT ", "Model 3200      ", "02.2"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
 652         {{T_SEQUENTIAL, T_REMOV,
 653          "TEAC    ", "MT-2ST/N50      ", ""},     PQUIRK_NOLUNS},
 654
 655         {{T_SCANNER, T_FIXED,
 656          "RICOH   ", "IS60            ", "1R08"}, PQUIRK_NOLUNS},
 657         {{T_SCANNER, T_FIXED,
 658          "UMAX    ", "Astra 1200S     ", "V2.9"}, PQUIRK_NOLUNS},
 659         {{T_SCANNER, T_FIXED,
 660          "UMAX    ", "Astra 1220S     ", ""},     PQUIRK_NOLUNS},
 661         {{T_SCANNER, T_FIXED,
 662          "UMAX    ", "UMAX S-6E       ", "V2.0"}, PQUIRK_NOLUNS},
 663         {{T_SCANNER, T_FIXED,
 664          "UMAX    ", "UMAX S-12       ", "V2.1"}, PQUIRK_NOLUNS},
 665         {{T_SCANNER, T_FIXED,
 666          "ULTIMA  ", "A6000C          ", ""},     PQUIRK_NOLUNS},
 667         {{T_PROCESSOR, T_FIXED,
 668          "ESG-SHV",  "SCA HSBP M15",     ""},     PQUIRK_NOLUNS},
 669         {{T_PROCESSOR, T_FIXED,
 670          "SYMBIOS",  "",                 ""},     PQUIRK_NOLUNS},
 671         {{T_PROCESSOR, T_FIXED,
 672          "LITRONIC", "PCMCIA          ", ""},     PQUIRK_NOLUNS},
 673         {{T_CHANGER, T_REMOV,
 674          "SONY    ", "CDL1100         ", ""},     PQUIRK_NOLUNS},
 675         {{T_ENCLOSURE, T_FIXED,
 676          "SUN     ", "SENA            ", ""},     PQUIRK_NOLUNS},
 677 };
 678
 679 /*
 680  * given a target and lun, ask the device what
 681  * it is, and find the correct driver table
 682  * entry.
 683  */
 684 static int
 685 scsi_probe_device(struct scsibus_softc *sc, int target, int lun)
 686 {
 687         struct scsipi_channel *chan = sc->sc_channel;
 688         struct scsipi_periph *periph;
 689         struct scsipi_inquiry_data inqbuf;
 690         const struct scsi_quirk_inquiry_pattern *finger;
 691         int checkdtype, priority, docontinue, quirks;
 692         struct scsipibus_attach_args sa;
 693         cfdata_t cf;
 694         int locs[SCSIBUSCF_NLOCS];
 695         device_t chld;
 696
 697         /*
 698          * Assume no more luns to search after this one.
 699          * If we successfully get Inquiry data and after
 700          * merging quirks we find we can probe for more
 701          * luns, we will.
 702          */
 703         docontinue = 0;
 704
 705         /* Skip this slot if it is already attached. */
 706         if (scsipi_lookup_periph(chan, target, lun) != NULL)
 707                 return (docontinue);
 708
 709         periph = scsipi_alloc_periph(M_NOWAIT);
 710         if (periph == NULL) {
 711 #ifdef  DIAGNOSTIC
 712                 aprint_error_dev(sc->sc_dev,
 713                     "cannot allocate periph for target %d lun %d\n",
 714                     target, lun);
 715 #endif
 716                 return (ENOMEM);
 717         }
 718         periph->periph_channel = chan;
 719         periph->periph_switch = &scsi_probe_dev;
 720
 721         periph->periph_target = target;
 722         periph->periph_lun = lun;
 723         periph->periph_quirks = chan->chan_defquirks;
 724
 725 #ifdef SCSIPI_DEBUG
 726         if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_SCSI &&
 727             SCSIPI_DEBUG_TARGET == target &&
 728             SCSIPI_DEBUG_LUN == lun)
 729                 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
 730 #endif
 731
 732         /*
 733          * Ask the device what it is
 734          */
 735
 736 #ifdef SCSI_2_DEF
 737         /* some devices need to be told to go to SCSI2 */
 738         /* However some just explode if you tell them this.. leave it out */
 739         scsi_change_def(periph, XS_CTL_DISCOVERY | XS_CTL_SILENT);
 740 #endif /* SCSI_2_DEF */
 741
 742         /* Now go ask the device all about itself. */
 743         memset(&inqbuf, 0, sizeof(inqbuf));
 744         {
 745                 u_int8_t *extension = &inqbuf.flags1;
 746                 int len = 0;
 747                 while (len < 3)
 748                         extension[len++] = '\0';
 749                 while (len < 3 + 28)
 750                         extension[len++] = ' ';
 751                 while (len < 3 + 28 + 20)
 752                         extension[len++] = '\0';
 753                 while (len < 3 + 28 + 20 + 1)
 754                         extension[len++] = '\0';
 755                 while (len < 3 + 28 + 20 + 1 + 1)
 756                         extension[len++] = '\0';
 757                 while (len < 3 + 28 + 20 + 1 + 1 + (8*2))
 758                         extension[len++] = ' ';
 759         }
 760         if (scsipi_inquire(periph, &inqbuf, XS_CTL_DISCOVERY | XS_CTL_SILENT))
 761                 goto bad;
 762
 763         periph->periph_type = inqbuf.device & SID_TYPE;
 764         if (inqbuf.dev_qual2 & SID_REMOVABLE)
 765                 periph->periph_flags |= PERIPH_REMOVABLE;
 766         periph->periph_version = inqbuf.version & SID_ANSII;
 767
 768         /*
 769          * Any device qualifier that has the top bit set (qualifier&4 != 0)
 770          * is vendor specific and won't match in this switch.
 771          * All we do here is throw out bad/negative responses.
 772          */
 773         checkdtype = 0;
 774         switch (inqbuf.device & SID_QUAL) {
 775         case SID_QUAL_LU_PRESENT:
 776                 checkdtype = 1;
 777                 break;
 778
 779         case SID_QUAL_LU_NOTPRESENT:
 780         case SID_QUAL_reserved:
 781         case SID_QUAL_LU_NOT_SUPP:
 782                 goto bad;
 783
 784         default:
 785                 break;
 786         }
 787
 788         /* Let the adapter driver handle the device separatley if it wants. */
 789         if (chan->chan_adapter->adapt_accesschk != NULL &&
 790             (*chan->chan_adapter->adapt_accesschk)(periph, &sa.sa_inqbuf))
 791                 goto bad;
 792
 793         if (checkdtype) {
 794                 switch (periph->periph_type) {
 795                 case T_DIRECT:
 796                 case T_SEQUENTIAL:
 797                 case T_PRINTER:
 798                 case T_PROCESSOR:
 799                 case T_WORM:
 800                 case T_CDROM:
 801                 case T_SCANNER:
 802                 case T_OPTICAL:
 803                 case T_CHANGER:
 804                 case T_COMM:
 805                 case T_IT8_1:
 806                 case T_IT8_2:
 807                 case T_STORARRAY:
 808                 case T_ENCLOSURE:
 809                 case T_SIMPLE_DIRECT:
 810                 case T_OPTIC_CARD_RW:
 811                 case T_OBJECT_STORED:
 812                 default:
 813                         break;
 814                 case T_NODEVICE:
 815                         goto bad;
 816                 }
 817         }
 818
 819         sa.sa_periph = periph;
 820         sa.sa_inqbuf.type = inqbuf.device;
 821         sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
 822             T_REMOV : T_FIXED;
 823         sa.sa_inqbuf.vendor = inqbuf.vendor;
 824         sa.sa_inqbuf.product = inqbuf.product;
 825         sa.sa_inqbuf.revision = inqbuf.revision;
 826         sa.scsipi_info.scsi_version = inqbuf.version;
 827         sa.sa_inqptr = &inqbuf;
 828
 829         finger = scsipi_inqmatch(
 830             &sa.sa_inqbuf, scsi_quirk_patterns,
 831             sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
 832             sizeof(scsi_quirk_patterns[0]), &priority);
 833
 834         if (finger != NULL)
 835                 quirks = finger->quirks;
 836         else
 837                 quirks = 0;
 838
 839         /*
 840          * Determine the operating mode capabilities of the device.
 841          */
 842         if (periph->periph_version >= 2) {
 843                 if ((inqbuf.flags3 & SID_CmdQue) != 0 &&
 844                     (quirks & PQUIRK_NOTAG) == 0)
 845                         periph->periph_cap |= PERIPH_CAP_TQING;
 846                 if ((inqbuf.flags3 & SID_Linked) != 0)
 847                         periph->periph_cap |= PERIPH_CAP_LINKCMDS;
 848                 if ((inqbuf.flags3 & SID_Sync) != 0 &&
 849                     (quirks & PQUIRK_NOSYNC) == 0)
 850                         periph->periph_cap |= PERIPH_CAP_SYNC;
 851                 if ((inqbuf.flags3 & SID_WBus16) != 0 &&
 852                     (quirks & PQUIRK_NOWIDE) == 0)
 853                         periph->periph_cap |= PERIPH_CAP_WIDE16;
 854                 if ((inqbuf.flags3 & SID_WBus32) != 0 &&
 855                     (quirks & PQUIRK_NOWIDE) == 0)
 856                         periph->periph_cap |= PERIPH_CAP_WIDE32;
 857                 if ((inqbuf.flags3 & SID_SftRe) != 0)
 858                         periph->periph_cap |= PERIPH_CAP_SFTRESET;
 859                 if ((inqbuf.flags3 & SID_RelAdr) != 0)
 860                         periph->periph_cap |= PERIPH_CAP_RELADR;
 861                 /* SPC-2 */
 862                 if (periph->periph_version >= 3 &&
 863                     !(quirks & PQUIRK_CAP_NODT)){
 864                         /*
 865                          * Report ST clocking though CAP_WIDExx/CAP_SYNC.
 866                          * If the device only supports DT, clear these
 867                          * flags (DT implies SYNC and WIDE)
 868                          */
 869                         switch (inqbuf.flags4 & SID_Clocking) {
 870                         case SID_CLOCKING_DT_ONLY:
 871                                 periph->periph_cap &=
 872                                     ~(PERIPH_CAP_SYNC |
 873                                       PERIPH_CAP_WIDE16 |
 874                                       PERIPH_CAP_WIDE32);
 875                                 /* FALLTHROUGH */
 876                         case SID_CLOCKING_SD_DT:
 877                                 periph->periph_cap |= PERIPH_CAP_DT;
 878                                 break;
 879                         default: /* ST only or invalid */
 880                                 /* nothing to do */
 881                                 break;
 882                         }
 883                 }
 884                 if (periph->periph_version >= 3) {
 885                         if (inqbuf.flags4 & SID_IUS)
 886                                 periph->periph_cap |= PERIPH_CAP_IUS;
 887                         if (inqbuf.flags4 & SID_QAS)
 888                                 periph->periph_cap |= PERIPH_CAP_QAS;
 889                 }
 890         }
 891         if (quirks & PQUIRK_CAP_SYNC)
 892                 periph->periph_cap |= PERIPH_CAP_SYNC;
 893         if (quirks & PQUIRK_CAP_WIDE16)
 894                 periph->periph_cap |= PERIPH_CAP_WIDE16;
 895
 896         /*
 897          * Now apply any quirks from the table.
 898          */
 899         periph->periph_quirks |= quirks;
 900         if (periph->periph_version == 0 &&
 901             (periph->periph_quirks & PQUIRK_FORCELUNS) == 0)
 902                 periph->periph_quirks |= PQUIRK_NOLUNS;
 903
 904         if ((periph->periph_quirks & PQUIRK_NOLUNS) == 0)
 905                 docontinue = 1;
 906
 907         locs[SCSIBUSCF_TARGET] = target;
 908         locs[SCSIBUSCF_LUN] = lun;
 909
 910         if ((cf = config_search_loc(config_stdsubmatch, sc->sc_dev,
 911              "scsibus", locs, &sa)) != NULL) {
 912                 scsipi_insert_periph(chan, periph);
 913                 /*
 914                  * XXX Can't assign periph_dev here, because we'll
 915                  * XXX need it before config_attach() returns.  Must
 916                  * XXX assign it in periph driver.
 917                  */
 918                 chld = config_attach_loc(sc->sc_dev, cf, locs, &sa,
 919                                          scsibusprint);
 920         } else {
 921                 scsibusprint(&sa, device_xname(sc->sc_dev));
 922                 aprint_normal(" not configured\n");
 923                 goto bad;
 924         }
 925
 926         return (docontinue);
 927
 928 bad:
 929         free(periph, M_DEVBUF);
 930         return (docontinue);
 931 }
 932
 933 /****** Entry points for user control of the SCSI bus. ******/
 934
 935 static int
 936 scsibusopen(dev_t dev, int flag, int fmt,
 937     struct lwp *l)
 938 {
 939         struct scsibus_softc *sc;
 940         int error, unit = minor(dev);
 941
 942         sc = device_lookup_private(&scsibus_cd, unit);
 943         if (sc == NULL)
 944                 return (ENXIO);
 945
 946         if (sc->sc_flags & SCSIBUSF_OPEN)
 947                 return (EBUSY);
 948
 949         if ((error = scsipi_adapter_addref(sc->sc_channel->chan_adapter)) != 0)
 950                 return (error);
 951
 952         sc->sc_flags |= SCSIBUSF_OPEN;
 953
 954         return (0);
 955 }
 956
 957 static int
 958 scsibusclose(dev_t dev, int flag, int fmt,
 959     struct lwp *l)
 960 {
 961         struct scsibus_softc *sc;
 962
 963         sc = device_lookup_private(&scsibus_cd, minor(dev));
 964         scsipi_adapter_delref(sc->sc_channel->chan_adapter);
 965
 966         sc->sc_flags &= ~SCSIBUSF_OPEN;
 967
 968         return (0);
 969 }
 970
 971 static int
 972 scsibusioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
 973 {
 974         struct scsibus_softc *sc;
 975         struct scsipi_channel *chan;
 976         int error;
 977
 978         sc = device_lookup_private(&scsibus_cd, minor(dev));
 979         chan = sc->sc_channel;
 980
 981         /*
 982          * Enforce write permission for ioctls that change the
 983          * state of the bus.  Host adapter specific ioctls must
 984          * be checked by the adapter driver.
 985          */
 986         switch (cmd) {
 987         case SCBUSIOSCAN:
 988         case SCBUSIODETACH:
 989         case SCBUSIORESET:
 990                 if ((flag & FWRITE) == 0)
 991                         return (EBADF);
 992         }
 993
 994         switch (cmd) {
 995         case SCBUSIOSCAN:
 996             {
 997                 struct scbusioscan_args *a =
 998                     (struct scbusioscan_args *)addr;
 999
1000                 error = scsi_probe_bus(sc, a->sa_target, a->sa_lun);
1001                 break;
1002             }
1003
1004         case SCBUSIODETACH:
1005             {
1006                 struct scbusiodetach_args *a =
1007                     (struct scbusiodetach_args *)addr;
1008
1009                 error = scsipi_target_detach(chan, a->sa_target, a->sa_lun, 0);
1010                 break;
1011             }
1012
1013
1014         case SCBUSIORESET:
1015                 /* FALLTHROUGH */
1016         default:
1017                 if (chan->chan_adapter->adapt_ioctl == NULL)
1018                         error = ENOTTY;
1019                 else
1020                         error = (*chan->chan_adapter->adapt_ioctl)(chan,
1021                             cmd, addr, flag, l->l_proc);
1022                 break;
1023         }
1024
1025         return (error);
1026 }