The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/scsipi/scsiconf.c

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    1 /*      $NetBSD: scsiconf.c,v 1.220 2004/03/12 23:00:40 bouyer Exp $    */
    2 
    3 /*-
    4  * Copyright (c) 1998, 1999 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  * 3. All advertising materials mentioning features or use of this software
   20  *    must display the following acknowledgement:
   21  *        This product includes software developed by the NetBSD
   22  *        Foundation, Inc. and its contributors.
   23  * 4. Neither the name of The NetBSD Foundation nor the names of its
   24  *    contributors may be used to endorse or promote products derived
   25  *    from this software without specific prior written permission.
   26  *
   27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   37  * POSSIBILITY OF SUCH DAMAGE.
   38  */
   39 
   40 /*
   41  * Originally written by Julian Elischer (julian@tfs.com)
   42  * for TRW Financial Systems for use under the MACH(2.5) operating system.
   43  *
   44  * TRW Financial Systems, in accordance with their agreement with Carnegie
   45  * Mellon University, makes this software available to CMU to distribute
   46  * or use in any manner that they see fit as long as this message is kept with
   47  * the software. For this reason TFS also grants any other persons or
   48  * organisations permission to use or modify this software.
   49  *
   50  * TFS supplies this software to be publicly redistributed
   51  * on the understanding that TFS is not responsible for the correct
   52  * functioning of this software in any circumstances.
   53  *
   54  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
   55  */
   56 
   57 #include <sys/cdefs.h>
   58 __KERNEL_RCSID(0, "$NetBSD: scsiconf.c,v 1.220 2004/03/12 23:00:40 bouyer Exp $");
   59 
   60 #include <sys/param.h>
   61 #include <sys/systm.h>
   62 #include <sys/kernel.h>
   63 #include <sys/proc.h>
   64 #include <sys/kthread.h>
   65 #include <sys/malloc.h>
   66 #include <sys/device.h>
   67 #include <sys/conf.h>
   68 #include <sys/fcntl.h>
   69 #include <sys/scsiio.h>
   70 #include <sys/queue.h>
   71 #include <sys/lock.h>
   72 
   73 #include <dev/scsipi/scsi_all.h>
   74 #include <dev/scsipi/scsipi_all.h>
   75 #include <dev/scsipi/scsiconf.h>
   76 
   77 #include "locators.h"
   78 
   79 const struct scsipi_periphsw scsi_probe_dev = {
   80         NULL,
   81         NULL,
   82         NULL,
   83         NULL,
   84 };
   85 
   86 struct scsi_initq {
   87         struct scsipi_channel *sc_channel;
   88         TAILQ_ENTRY(scsi_initq) scsi_initq;
   89 };
   90 
   91 static TAILQ_HEAD(, scsi_initq) scsi_initq_head = 
   92     TAILQ_HEAD_INITIALIZER(scsi_initq_head);
   93 static struct simplelock scsibus_interlock = SIMPLELOCK_INITIALIZER;
   94 
   95 int     scsi_probe_device __P((struct scsibus_softc *, int, int));
   96 
   97 int     scsibusmatch __P((struct device *, struct cfdata *, void *));
   98 void    scsibusattach __P((struct device *, struct device *, void *));
   99 int     scsibusactivate __P((struct device *, enum devact));
  100 int     scsibusdetach __P((struct device *, int flags));
  101 
  102 int     scsibussubmatch __P((struct device *, struct cfdata *, void *));
  103 
  104 CFATTACH_DECL(scsibus, sizeof(struct scsibus_softc),
  105     scsibusmatch, scsibusattach, scsibusdetach, scsibusactivate);
  106 
  107 extern struct cfdriver scsibus_cd;
  108 
  109 dev_type_open(scsibusopen);
  110 dev_type_close(scsibusclose);
  111 dev_type_ioctl(scsibusioctl);
  112 
  113 const struct cdevsw scsibus_cdevsw = {
  114         scsibusopen, scsibusclose, noread, nowrite, scsibusioctl,
  115         nostop, notty, nopoll, nommap, nokqfilter,
  116 };
  117 
  118 int     scsibusprint __P((void *, const char *));
  119 void    scsibus_config __P((struct scsipi_channel *, void *));
  120 
  121 const struct scsipi_bustype scsi_bustype = {
  122         SCSIPI_BUSTYPE_SCSI,
  123         scsi_scsipi_cmd,
  124         scsipi_interpret_sense,
  125         scsi_print_addr,
  126         scsi_kill_pending,
  127 };
  128 
  129 int
  130 scsiprint(aux, pnp)
  131         void *aux;
  132         const char *pnp;
  133 {
  134         struct scsipi_channel *chan = aux;
  135         struct scsipi_adapter *adapt = chan->chan_adapter;
  136 
  137         /* only "scsibus"es can attach to "scsi"s; easy. */
  138         if (pnp)
  139                 aprint_normal("scsibus at %s", pnp);
  140 
  141         /* don't print channel if the controller says there can be only one. */
  142         if (adapt->adapt_nchannels != 1)
  143                 aprint_normal(" channel %d", chan->chan_channel);
  144 
  145         return (UNCONF);
  146 }
  147 
  148 int
  149 scsibusmatch(parent, cf, aux)
  150         struct device *parent;
  151         struct cfdata *cf;
  152         void *aux;
  153 {
  154         struct scsipi_channel *chan = aux;
  155 
  156         if (chan->chan_bustype->bustype_type != SCSIPI_BUSTYPE_SCSI)
  157                 return 0;
  158 
  159         if (cf->cf_loc[SCSICF_CHANNEL] != chan->chan_channel &&
  160             cf->cf_loc[SCSICF_CHANNEL] != SCSICF_CHANNEL_DEFAULT)
  161                 return (0);
  162 
  163         return (1);
  164 }
  165 
  166 void
  167 scsibusattach(parent, self, aux)
  168         struct device *parent, *self;
  169         void *aux;
  170 {
  171         struct scsibus_softc *sc = (void *) self;
  172         struct scsipi_channel *chan = aux;
  173         struct scsi_initq *scsi_initq;
  174 
  175         sc->sc_channel = chan;
  176         chan->chan_name = sc->sc_dev.dv_xname;
  177 
  178         aprint_naive(": SCSI bus\n");
  179         aprint_normal(": %d target%s, %d lun%s per target\n",
  180             chan->chan_ntargets,
  181             chan->chan_ntargets == 1 ? "" : "s",
  182             chan->chan_nluns,
  183             chan->chan_nluns == 1 ? "" : "s");
  184 
  185         /* Initialize the channel structure first */
  186         chan->chan_init_cb = scsibus_config;
  187         chan->chan_init_cb_arg = sc;
  188         
  189         scsi_initq = malloc(sizeof(struct scsi_initq), M_DEVBUF, M_WAITOK);
  190         scsi_initq->sc_channel = chan;
  191         TAILQ_INSERT_TAIL(&scsi_initq_head, scsi_initq, scsi_initq);
  192         config_pending_incr();
  193         if (scsipi_channel_init(chan)) {
  194                 aprint_error("%s: failed to init channel\n",
  195                     sc->sc_dev.dv_xname);
  196                 return;
  197         }
  198 }
  199 
  200 void
  201 scsibus_config(chan, arg)
  202         struct scsipi_channel *chan;
  203         void *arg;
  204 {
  205         struct scsibus_softc *sc = arg;
  206         struct scsi_initq *scsi_initq;
  207 
  208 #ifndef SCSI_DELAY
  209 #define SCSI_DELAY 2
  210 #endif
  211         if ((chan->chan_flags & SCSIPI_CHAN_NOSETTLE) == 0 &&
  212             SCSI_DELAY > 0) {
  213                 aprint_normal(
  214                     "%s: waiting %d seconds for devices to settle...\n",
  215                     sc->sc_dev.dv_xname, SCSI_DELAY);
  216                 /* ...an identifier we know no one will use... */
  217                 (void) tsleep(scsibus_config, PRIBIO,
  218                     "scsidly", SCSI_DELAY * hz);
  219         }
  220 
  221         /* Make sure the devices probe in scsibus order to avoid jitter. */
  222         simple_lock(&scsibus_interlock);
  223         for (;;) {
  224                 scsi_initq = TAILQ_FIRST(&scsi_initq_head);
  225                 if (scsi_initq->sc_channel == chan)
  226                         break;
  227                 ltsleep(&scsi_initq_head, PRIBIO, "scsi_initq", 0, 
  228                     &scsibus_interlock);
  229         }
  230 
  231         simple_unlock(&scsibus_interlock);
  232 
  233         scsi_probe_bus(sc, -1, -1);
  234 
  235         simple_lock(&scsibus_interlock);
  236         TAILQ_REMOVE(&scsi_initq_head, scsi_initq, scsi_initq);
  237         simple_unlock(&scsibus_interlock);
  238 
  239         free(scsi_initq, M_DEVBUF);
  240         wakeup(&scsi_initq_head);
  241 
  242         config_pending_decr();
  243 }
  244 
  245 int
  246 scsibussubmatch(parent, cf, aux)
  247         struct device *parent;
  248         struct cfdata *cf;
  249         void *aux;
  250 {
  251         struct scsipibus_attach_args *sa = aux;
  252         struct scsipi_periph *periph = sa->sa_periph;
  253 
  254         if (cf->cf_loc[SCSIBUSCF_TARGET] != SCSIBUSCF_TARGET_DEFAULT &&
  255             cf->cf_loc[SCSIBUSCF_TARGET] != periph->periph_target)
  256                 return (0);
  257         if (cf->cf_loc[SCSIBUSCF_LUN] != SCSIBUSCF_LUN_DEFAULT &&
  258             cf->cf_loc[SCSIBUSCF_LUN] != periph->periph_lun)
  259                 return (0);
  260         return (config_match(parent, cf, aux));
  261 }
  262 
  263 int
  264 scsibusactivate(self, act)
  265         struct device *self;
  266         enum devact act;
  267 {
  268         struct scsibus_softc *sc = (void *) self;
  269         struct scsipi_channel *chan = sc->sc_channel;
  270         struct scsipi_periph *periph;
  271         int target, lun, error = 0, s;
  272 
  273         s = splbio();
  274         switch (act) {
  275         case DVACT_ACTIVATE:
  276                 error = EOPNOTSUPP;
  277                 break;
  278 
  279         case DVACT_DEACTIVATE:
  280                 for (target = 0; target < chan->chan_ntargets;
  281                      target++) {
  282                         if (target == chan->chan_id)
  283                                 continue;
  284                         for (lun = 0; lun < chan->chan_nluns; lun++) {
  285                                 periph = scsipi_lookup_periph(chan,
  286                                     target, lun);
  287                                 if (periph == NULL)
  288                                         continue;
  289                                 error = config_deactivate(periph->periph_dev);
  290                                 if (error)
  291                                         goto out;
  292                         }
  293                 }
  294                 break;
  295         }
  296  out:
  297         splx(s);
  298         return (error);
  299 }
  300 
  301 int
  302 scsibusdetach(self, flags)
  303         struct device *self;
  304         int flags;
  305 {
  306         struct scsibus_softc *sc = (void *) self;
  307         struct scsipi_channel *chan = sc->sc_channel;
  308 
  309         /*
  310          * Shut down the channel.
  311          */
  312         scsipi_channel_shutdown(chan);
  313 
  314         /*
  315          * Now detach all of the periphs.
  316          */
  317         return scsipi_target_detach(chan, -1, -1, flags);
  318 }
  319 
  320 /*
  321  * Probe the requested scsi bus. It must be already set up.
  322  * target and lun optionally narrow the search if not -1
  323  */
  324 int
  325 scsi_probe_bus(sc, target, lun)
  326         struct scsibus_softc *sc;
  327         int target, lun;
  328 {
  329         struct scsipi_channel *chan = sc->sc_channel;
  330         int maxtarget, mintarget, maxlun, minlun;
  331         int error;
  332 
  333         if (target == -1) {
  334                 maxtarget = chan->chan_ntargets - 1;
  335                 mintarget = 0;
  336         } else {
  337                 if (target < 0 || target >= chan->chan_ntargets)
  338                         return (EINVAL);
  339                 maxtarget = mintarget = target;
  340         }
  341 
  342         if (lun == -1) {
  343                 maxlun = chan->chan_nluns - 1;
  344                 minlun = 0;
  345         } else {
  346                 if (lun < 0 || lun >= chan->chan_nluns)
  347                         return (EINVAL);
  348                 maxlun = minlun = lun;
  349         }
  350 
  351         /*
  352          * Some HBAs provide an abstracted view of the bus; give them an
  353          * oppertunity to re-scan it before we do.
  354          */
  355         if (chan->chan_adapter->adapt_ioctl != NULL)
  356                 (*chan->chan_adapter->adapt_ioctl)(chan, SCBUSIOLLSCAN, NULL,
  357                     0, curproc);
  358 
  359         if ((error = scsipi_adapter_addref(chan->chan_adapter)) != 0)
  360                 return (error);
  361         for (target = mintarget; target <= maxtarget; target++) {
  362                 if (target == chan->chan_id)
  363                         continue;
  364                 for (lun = minlun; lun <= maxlun; lun++) {
  365                         /*
  366                          * See if there's a device present, and configure it.
  367                          */
  368                         if (scsi_probe_device(sc, target, lun) == 0)
  369                                 break;
  370                         /* otherwise something says we should look further */
  371                 }
  372                 
  373                 /*
  374                  * Now that we've discovered all of the LUNs on this
  375                  * I_T Nexus, update the xfer mode for all of them
  376                  * that we know about.
  377                  */
  378                 scsipi_set_xfer_mode(chan, target, 1);
  379         }
  380         scsipi_adapter_delref(chan->chan_adapter);
  381         return (0);
  382 }
  383 
  384 /*
  385  * Print out autoconfiguration information for a subdevice.
  386  *
  387  * This is a slight abuse of 'standard' autoconfiguration semantics,
  388  * because 'print' functions don't normally print the colon and
  389  * device information.  However, in this case that's better than
  390  * either printing redundant information before the attach message,
  391  * or having the device driver call a special function to print out
  392  * the standard device information.
  393  */
  394 int
  395 scsibusprint(aux, pnp)
  396         void *aux;
  397         const char *pnp;
  398 {
  399         struct scsipibus_attach_args *sa = aux;
  400         struct scsipi_inquiry_pattern *inqbuf;
  401         u_int8_t type;
  402         const char *dtype;
  403         char vendor[33], product[65], revision[17];
  404         int target, lun;
  405 
  406         if (pnp != NULL)
  407                 aprint_normal("%s", pnp);
  408 
  409         inqbuf = &sa->sa_inqbuf;
  410 
  411         target = sa->sa_periph->periph_target;
  412         lun = sa->sa_periph->periph_lun;
  413         type = inqbuf->type & SID_TYPE;
  414 
  415         dtype = scsipi_dtype(type);
  416 
  417         scsipi_strvis(vendor, 33, inqbuf->vendor, 8);
  418         scsipi_strvis(product, 65, inqbuf->product, 16);
  419         scsipi_strvis(revision, 17, inqbuf->revision, 4);
  420 
  421         aprint_normal(" target %d lun %d: <%s, %s, %s> %s %s",
  422             target, lun, vendor, product, revision, dtype,
  423             inqbuf->removable ? "removable" : "fixed");
  424 
  425         return (UNCONF);
  426 }
  427 
  428 const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
  429         {{T_CDROM, T_REMOV,
  430          "CHINON  ", "CD-ROM CDS-431  ", ""},     PQUIRK_NOLUNS},
  431         {{T_CDROM, T_REMOV,
  432          "CHINON  ", "CD-ROM CDS-435  ", ""},     PQUIRK_NOLUNS},
  433         {{T_CDROM, T_REMOV,
  434          "Chinon  ", "CD-ROM CDS-525  ", ""},     PQUIRK_NOLUNS},
  435         {{T_CDROM, T_REMOV,
  436          "CHINON  ", "CD-ROM CDS-535  ", ""},     PQUIRK_NOLUNS},
  437         {{T_CDROM, T_REMOV,
  438          "DEC     ", "RRD42   (C) DEC ", ""},     PQUIRK_NOLUNS},
  439         {{T_CDROM, T_REMOV,
  440          "DENON   ", "DRD-25X         ", "V"},    PQUIRK_NOLUNS},
  441         {{T_CDROM, T_REMOV,
  442          "GENERIC ", "CRD-BP2         ", ""},     PQUIRK_NOLUNS},
  443         {{T_CDROM, T_REMOV,
  444          "HP      ", "C4324/C4325     ", ""},     PQUIRK_NOLUNS},
  445         {{T_CDROM, T_REMOV,
  446          "IMS     ", "CDD521/10       ", "2.06"}, PQUIRK_NOLUNS},
  447         {{T_CDROM, T_REMOV,
  448          "MATSHITA", "CD-ROM CR-5XX   ", "1.0b"}, PQUIRK_NOLUNS},
  449         {{T_CDROM, T_REMOV,
  450          "MEDAVIS ", "RENO CD-ROMX2A  ", ""},     PQUIRK_NOLUNS},
  451         {{T_CDROM, T_REMOV,
  452          "MEDIAVIS", "CDR-H93MV       ", "1.3"},  PQUIRK_NOLUNS},
  453         {{T_CDROM, T_REMOV,
  454          "NEC     ", "CD-ROM DRIVE:502", ""},     PQUIRK_NOLUNS},
  455         {{T_CDROM, T_REMOV,
  456          "NEC     ", "CD-ROM DRIVE:55 ", ""},     PQUIRK_NOLUNS},
  457         {{T_CDROM, T_REMOV,
  458          "NEC     ", "CD-ROM DRIVE:83 ", ""},     PQUIRK_NOLUNS},
  459         {{T_CDROM, T_REMOV,
  460          "NEC     ", "CD-ROM DRIVE:84 ", ""},     PQUIRK_NOLUNS},
  461         {{T_CDROM, T_REMOV,
  462          "NEC     ", "CD-ROM DRIVE:841", ""},     PQUIRK_NOLUNS},
  463         {{T_CDROM, T_REMOV,
  464          "OLYMPUS ", "CDS620E         ", "1.1d"}, 
  465                                PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOCAPACITY},
  466         {{T_CDROM, T_REMOV,
  467          "PIONEER ", "CD-ROM DR-124X  ", "1.01"}, PQUIRK_NOLUNS},
  468         {{T_CDROM, T_REMOV,
  469          "PLEXTOR ", "CD-ROM PX-4XCS  ", "1.01"},
  470                                PQUIRK_NOLUNS|PQUIRK_NOSYNC},
  471         {{T_CDROM, T_REMOV,
  472          "SONY    ", "CD-ROM CDU-541  ", ""},     PQUIRK_NOLUNS},
  473         {{T_CDROM, T_REMOV,
  474          "SONY    ", "CD-ROM CDU-55S  ", ""},     PQUIRK_NOLUNS},
  475         {{T_CDROM, T_REMOV,
  476          "SONY    ", "CD-ROM CDU-561  ", ""},     PQUIRK_NOLUNS},
  477         {{T_CDROM, T_REMOV,
  478          "SONY    ", "CD-ROM CDU-76S", ""},
  479                                 PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOWIDE},
  480         {{T_CDROM, T_REMOV,
  481          "SONY    ", "CD-ROM CDU-8003A", ""},     PQUIRK_NOLUNS},
  482         {{T_CDROM, T_REMOV,
  483          "SONY    ", "CD-ROM CDU-8012 ", ""},     PQUIRK_NOLUNS},
  484         {{T_CDROM, T_REMOV,
  485          "TEAC    ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
  486         {{T_CDROM, T_REMOV,
  487          "TEAC    ", "CD-ROM CD-56S   ", "1.0B"}, PQUIRK_NOLUNS},
  488         {{T_CDROM, T_REMOV,
  489          "TEXEL   ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
  490         {{T_CDROM, T_REMOV,
  491          "TEXEL   ", "CD-ROM DM-XX24 K", "1.09"}, PQUIRK_NOLUNS},
  492         {{T_CDROM, T_REMOV,
  493          "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, PQUIRK_NOLUNS},
  494         {{T_CDROM, T_REMOV,
  495          "TOSHIBA ", "XM-4101TASUNSLCD", ""}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
  496         /* "IBM CDRM00201     !F" 0724 is an IBM OEM Toshiba XM-4101BME */
  497         {{T_CDROM, T_REMOV,
  498          "IBM     ", "CDRM00201     !F", "0724"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
  499         {{T_CDROM, T_REMOV,
  500          "ShinaKen", "CD-ROM DM-3x1S",   "1.04"}, PQUIRK_NOLUNS},
  501         {{T_CDROM, T_REMOV,
  502          "JVC     ", "R2626",            ""},     PQUIRK_NOLUNS},
  503         {{T_CDROM, T_REMOV,
  504          "YAMAHA", "CRW8424S",           ""},     PQUIRK_NOLUNS},
  505         {{T_CDROM, T_REMOV,
  506          "NEC     ", "CD-ROM DRIVE:222", ""},     PQUIRK_NOLUNS|PQUIRK_NOSYNC},
  507 
  508         {{T_DIRECT, T_FIXED,
  509          "MICROP  ", "1588-15MBSUN0669", ""},     PQUIRK_AUTOSAVE},
  510         {{T_DIRECT, T_FIXED,
  511          "MICROP  ", "2217-15MQ1091501", ""},     PQUIRK_NOSYNCCACHE},
  512         {{T_OPTICAL, T_REMOV,
  513          "EPSON   ", "OMD-5010        ", "3.08"}, PQUIRK_NOLUNS},
  514         {{T_DIRECT, T_FIXED,
  515          "ADAPTEC ", "AEC-4412BD",       "1.2A"}, PQUIRK_NOMODESENSE},
  516         {{T_DIRECT, T_FIXED,
  517          "ADAPTEC ", "ACB-4000",         ""},     PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE|PQUIRK_NOMODESENSE},
  518         {{T_DIRECT, T_FIXED,
  519          "DEC     ", "RZ55     (C) DEC", ""},     PQUIRK_AUTOSAVE},
  520         {{T_DIRECT, T_FIXED,
  521          "EMULEX  ", "MD21/S2     ESDI", "A00"},
  522                                 PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE},
  523         {{T_DIRECT, T_FIXED,
  524          "MICROP",  "1548-15MZ1077801",  "HZ2P"}, PQUIRK_NOTAG},
  525         {{T_DIRECT, T_FIXED,
  526          "HP      ", "C372",             ""},     PQUIRK_NOTAG},
  527         {{T_DIRECT, T_FIXED,
  528          "IBMRAID ", "0662S",            ""},     PQUIRK_AUTOSAVE},
  529         {{T_DIRECT, T_FIXED,
  530          "IBM     ", "0663H",            ""},     PQUIRK_AUTOSAVE},
  531         {{T_DIRECT, T_FIXED,
  532          "IBM",      "0664",             ""},     PQUIRK_AUTOSAVE},
  533         {{T_DIRECT, T_FIXED,
  534         /* improperly report DT-only sync mode */
  535          "IBM     ", "DXHS36D",          ""},
  536                                 PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
  537         {{T_DIRECT, T_FIXED,
  538          "IBM     ", "DXHS18Y",          ""},
  539                                 PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
  540         {{T_DIRECT, T_FIXED,
  541          "IBM     ", "H3171-S2",         ""},
  542                                 PQUIRK_NOLUNS|PQUIRK_AUTOSAVE},
  543         {{T_DIRECT, T_FIXED,
  544          "IBM     ", "KZ-C",             ""},     PQUIRK_AUTOSAVE},
  545         /* Broken IBM disk */
  546         {{T_DIRECT, T_FIXED,
  547          ""        , "DFRSS2F",          ""},     PQUIRK_AUTOSAVE},
  548         {{T_DIRECT, T_REMOV,
  549          "MPL     ", "MC-DISK-        ", ""},     PQUIRK_NOLUNS},
  550         {{T_DIRECT, T_FIXED,
  551          "MAXTOR  ", "XT-3280         ", ""},     PQUIRK_NOLUNS},
  552         {{T_DIRECT, T_FIXED,
  553          "MAXTOR  ", "XT-4380S        ", ""},     PQUIRK_NOLUNS},
  554         {{T_DIRECT, T_FIXED,
  555          "MAXTOR  ", "MXT-1240S       ", ""},     PQUIRK_NOLUNS},
  556         {{T_DIRECT, T_FIXED,
  557          "MAXTOR  ", "XT-4170S        ", ""},     PQUIRK_NOLUNS},
  558         {{T_DIRECT, T_FIXED,
  559          "MAXTOR  ", "XT-8760S",         ""},     PQUIRK_NOLUNS},
  560         {{T_DIRECT, T_FIXED,
  561          "MAXTOR  ", "LXT-213S        ", ""},     PQUIRK_NOLUNS},
  562         {{T_DIRECT, T_FIXED,
  563          "MAXTOR  ", "LXT-213S SUN0207", ""},     PQUIRK_NOLUNS},
  564         {{T_DIRECT, T_FIXED,
  565          "MAXTOR  ", "LXT-200S        ", ""},     PQUIRK_NOLUNS},
  566         {{T_DIRECT, T_FIXED,
  567          "MEGADRV ", "EV1000",           ""},     PQUIRK_NOMODESENSE},
  568         {{T_DIRECT, T_FIXED,
  569          "MICROP", "1991-27MZ",          ""},     PQUIRK_NOTAG},
  570         {{T_DIRECT, T_FIXED,
  571          "MST     ", "SnapLink        ", ""},     PQUIRK_NOLUNS},
  572         {{T_DIRECT, T_FIXED,
  573          "NEC     ", "D3847           ", "0307"}, PQUIRK_NOLUNS},
  574         {{T_DIRECT, T_FIXED,
  575          "QUANTUM ", "ELS85S          ", ""},     PQUIRK_AUTOSAVE},
  576         {{T_DIRECT, T_FIXED,
  577          "QUANTUM ", "LPS525S         ", ""},     PQUIRK_NOLUNS},
  578         {{T_DIRECT, T_FIXED,
  579          "QUANTUM ", "P105S 910-10-94x", ""},     PQUIRK_NOLUNS},
  580         {{T_DIRECT, T_FIXED,
  581          "QUANTUM ", "PD1225S         ", ""},     PQUIRK_NOLUNS},
  582         {{T_DIRECT, T_FIXED,
  583          "QUANTUM ", "PD210S   SUN0207", ""},     PQUIRK_NOLUNS},
  584         {{T_DIRECT, T_FIXED,
  585          "QUANTUM ", "ATLAS IV 9 WLS", "0A0A"},   PQUIRK_CAP_NODT},
  586         {{T_DIRECT, T_FIXED,
  587          "RODIME  ", "RO3000S         ", ""},     PQUIRK_NOLUNS},
  588         {{T_DIRECT, T_FIXED,
  589          "SEAGATE ", "ST125N          ", ""},     PQUIRK_NOLUNS},
  590         {{T_DIRECT, T_FIXED,
  591          "SEAGATE ", "ST157N          ", ""},     PQUIRK_NOLUNS},
  592         {{T_DIRECT, T_FIXED,
  593          "SEAGATE ", "ST296           ", ""},     PQUIRK_NOLUNS},
  594         {{T_DIRECT, T_FIXED,
  595          "SEAGATE ", "ST296N          ", ""},     PQUIRK_NOLUNS},
  596         {{T_DIRECT, T_FIXED,
  597          "SEAGATE ", "ST318404LC      ", ""},     PQUIRK_NOLUNS},
  598         {{T_DIRECT, T_FIXED,
  599          "SEAGATE ", "ST15150N        ", ""},     PQUIRK_NOTAG},
  600         {{T_DIRECT, T_FIXED,
  601          "SEAGATE ", "ST19171",          ""},     PQUIRK_NOMODESENSE},
  602         {{T_DIRECT, T_FIXED,
  603          "SEAGATE ", "ST32430N",         ""},     PQUIRK_CAP_SYNC},
  604         {{T_DIRECT, T_FIXED,
  605          "SEAGATE ", "ST34501FC       ", ""},     PQUIRK_NOMODESENSE},
  606         {{T_DIRECT, T_FIXED,
  607          "SEAGATE ", "SX910800N",        ""},     PQUIRK_NOTAG},
  608         {{T_DIRECT, T_FIXED,
  609          "TOSHIBA ", "MK538FB         ", "6027"}, PQUIRK_NOLUNS},
  610         {{T_DIRECT, T_FIXED,
  611          "MICROP  ", "1924",          ""},     PQUIRK_CAP_SYNC},
  612         {{T_DIRECT, T_FIXED,
  613          "FUJITSU ", "M2266",         ""},     PQUIRK_CAP_SYNC},
  614 
  615         {{T_DIRECT, T_REMOV,
  616          "IOMEGA", "ZIP 100",            "J.03"}, PQUIRK_NOLUNS},
  617         {{T_DIRECT, T_REMOV,
  618          "INSITE", "I325VM",             ""},     PQUIRK_NOLUNS},
  619 
  620         /* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
  621         {{T_SEQUENTIAL, T_REMOV,
  622          "        ", "                ", "    "}, PQUIRK_NOLUNS},
  623         {{T_SEQUENTIAL, T_REMOV,
  624          "EMULEX  ", "MT-02 QIC       ", ""},     PQUIRK_NOLUNS},
  625         {{T_SEQUENTIAL, T_REMOV,
  626          "CALIPER ", "CP150           ", ""},     PQUIRK_NOLUNS},
  627         {{T_SEQUENTIAL, T_REMOV,
  628          "EXABYTE ", "EXB-8200        ", ""},     PQUIRK_NOLUNS},
  629         {{T_SEQUENTIAL, T_REMOV,
  630          "SONY    ", "GY-10C          ", ""},     PQUIRK_NOLUNS},
  631         {{T_SEQUENTIAL, T_REMOV,
  632          "SONY    ", "SDT-2000        ", "2.09"}, PQUIRK_NOLUNS},
  633         {{T_SEQUENTIAL, T_REMOV,
  634          "SONY    ", "SDT-5000        ", "3."},   PQUIRK_NOSYNC|PQUIRK_NOWIDE},
  635         {{T_SEQUENTIAL, T_REMOV,
  636          "SONY    ", "SDT-5200        ", "3."},   PQUIRK_NOLUNS},
  637         {{T_SEQUENTIAL, T_REMOV,
  638          "TANDBERG", " TDC 3600       ", ""},     PQUIRK_NOLUNS},
  639         /* Following entry reported as a Tandberg 3600; ref. PR1933 */
  640         {{T_SEQUENTIAL, T_REMOV,
  641          "ARCHIVE ", "VIPER 150  21247", ""},     PQUIRK_NOLUNS},
  642         /* Following entry for a Cipher ST150S; ref. PR4171 */
  643         {{T_SEQUENTIAL, T_REMOV,
  644          "ARCHIVE ", "VIPER 1500 21247", "2.2G"}, PQUIRK_NOLUNS},
  645         {{T_SEQUENTIAL, T_REMOV,
  646          "ARCHIVE ", "Python 28454-XXX", ""},     PQUIRK_NOLUNS},
  647         {{T_SEQUENTIAL, T_REMOV,
  648          "WANGTEK ", "5099ES SCSI",      ""},     PQUIRK_NOLUNS},
  649         {{T_SEQUENTIAL, T_REMOV,
  650          "WANGTEK ", "5150ES SCSI",      ""},     PQUIRK_NOLUNS},
  651         {{T_SEQUENTIAL, T_REMOV,
  652          "WANGTEK ", "SCSI-36",          ""},     PQUIRK_NOLUNS},
  653         {{T_SEQUENTIAL, T_REMOV,
  654          "WangDAT ", "Model 1300      ", "02.4"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
  655         {{T_SEQUENTIAL, T_REMOV,
  656          "WangDAT ", "Model 2600      ", "01.7"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
  657         {{T_SEQUENTIAL, T_REMOV,
  658          "WangDAT ", "Model 3200      ", "02.2"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
  659         {{T_SEQUENTIAL, T_REMOV,
  660          "TEAC    ", "MT-2ST/N50      ", ""},     PQUIRK_NOLUNS},
  661 
  662         {{T_SCANNER, T_FIXED,
  663          "RICOH   ", "IS60            ", "1R08"}, PQUIRK_NOLUNS},
  664         {{T_SCANNER, T_FIXED,
  665          "UMAX    ", "Astra 1200S     ", "V2.9"}, PQUIRK_NOLUNS},
  666         {{T_SCANNER, T_FIXED,
  667          "UMAX    ", "Astra 1220S     ", ""},     PQUIRK_NOLUNS},
  668         {{T_SCANNER, T_FIXED,
  669          "UMAX    ", "UMAX S-6E       ", "V2.0"}, PQUIRK_NOLUNS},
  670         {{T_SCANNER, T_FIXED,
  671          "UMAX    ", "UMAX S-12       ", "V2.1"}, PQUIRK_NOLUNS},
  672         {{T_SCANNER, T_FIXED,
  673          "ULTIMA  ", "A6000C          ", ""},     PQUIRK_NOLUNS},
  674         {{T_PROCESSOR, T_FIXED,
  675          "SYMBIOS",  "",                 ""},     PQUIRK_NOLUNS},
  676         {{T_PROCESSOR, T_FIXED,
  677          "LITRONIC", "PCMCIA          ", ""},     PQUIRK_NOLUNS},
  678         {{T_CHANGER, T_REMOV,
  679          "SONY    ", "CDL1100         ", ""},     PQUIRK_NOLUNS},
  680         {{T_ENCLOSURE, T_FIXED,
  681          "SUN     ", "SENA            ", ""},     PQUIRK_NOLUNS},
  682 };
  683 
  684 /*
  685  * given a target and lun, ask the device what
  686  * it is, and find the correct driver table
  687  * entry.
  688  */
  689 int
  690 scsi_probe_device(sc, target, lun)
  691         struct scsibus_softc *sc;
  692         int target, lun;
  693 {
  694         struct scsipi_channel *chan = sc->sc_channel;
  695         struct scsipi_periph *periph;
  696         struct scsipi_inquiry_data inqbuf;
  697         struct scsi_quirk_inquiry_pattern *finger;
  698         int checkdtype, priority, docontinue, quirks;
  699         struct scsipibus_attach_args sa;
  700         struct cfdata *cf;
  701 
  702         /*
  703          * Assume no more luns to search after this one.
  704          * If we successfully get Inquiry data and after
  705          * merging quirks we find we can probe for more
  706          * luns, we will.
  707          */
  708         docontinue = 0;
  709 
  710         /* Skip this slot if it is already attached. */
  711         if (scsipi_lookup_periph(chan, target, lun) != NULL)
  712                 return (docontinue);
  713 
  714         periph = scsipi_alloc_periph(M_NOWAIT);
  715         if (periph == NULL) {
  716 #ifdef  DIAGNOSTIC
  717                 aprint_error(
  718                     "%s: cannot allocate periph for target %d lun %d\n",
  719                     sc->sc_dev.dv_xname, target, lun);
  720 #endif
  721                 return (ENOMEM);
  722         }
  723         periph->periph_channel = chan;
  724         periph->periph_switch = &scsi_probe_dev;
  725 
  726         periph->periph_target = target;
  727         periph->periph_lun = lun;
  728         periph->periph_quirks = chan->chan_defquirks;
  729 
  730 #ifdef SCSIPI_DEBUG
  731         if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_SCSI &&
  732             SCSIPI_DEBUG_TARGET == target &&
  733             SCSIPI_DEBUG_LUN == lun)
  734                 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
  735 #endif
  736 
  737         /*
  738          * Ask the device what it is
  739          */
  740 
  741 #ifdef SCSI_2_DEF
  742         /* some devices need to be told to go to SCSI2 */
  743         /* However some just explode if you tell them this.. leave it out */
  744         scsi_change_def(periph, XS_CTL_DISCOVERY | XS_CTL_SILENT);
  745 #endif /* SCSI_2_DEF */
  746 
  747         /* Now go ask the device all about itself. */
  748         memset(&inqbuf, 0, sizeof(inqbuf));
  749         {
  750                 u_int8_t *extension = &inqbuf.flags1;
  751                 int len = 0;
  752                 while (len < 3)
  753                         extension[len++] = '\0';
  754                 while (len < 3 + 28)
  755                         extension[len++] = ' ';
  756                 while (len < 3 + 28 + 20)
  757                         extension[len++] = '\0';
  758                 while (len < 3 + 28 + 20 + 1)
  759                         extension[len++] = '\0';
  760                 while (len < 3 + 28 + 20 + 1 + 1)
  761                         extension[len++] = '\0';
  762                 while (len < 3 + 28 + 20 + 1 + 1 + (8*2))
  763                         extension[len++] = ' ';
  764         }
  765         if (scsipi_inquire(periph, &inqbuf,
  766             XS_CTL_DISCOVERY | XS_CTL_DATA_ONSTACK | XS_CTL_SILENT) != 0)
  767                 goto bad;
  768 
  769         periph->periph_type = inqbuf.device & SID_TYPE;
  770         if (inqbuf.dev_qual2 & SID_REMOVABLE)
  771                 periph->periph_flags |= PERIPH_REMOVABLE;
  772         periph->periph_version = inqbuf.version & SID_ANSII;
  773 
  774         /*
  775          * Any device qualifier that has the top bit set (qualifier&4 != 0)
  776          * is vendor specific and won't match in this switch.
  777          * All we do here is throw out bad/negative responses.
  778          */
  779         checkdtype = 0;
  780         switch (inqbuf.device & SID_QUAL) {
  781         case SID_QUAL_LU_PRESENT:
  782                 checkdtype = 1;
  783                 break;
  784 
  785         case SID_QUAL_LU_NOTPRESENT:
  786         case SID_QUAL_reserved:
  787         case SID_QUAL_LU_NOT_SUPP:
  788                 goto bad;
  789 
  790         default:
  791                 break;
  792         }
  793 
  794         /* Let the adapter driver handle the device separatley if it wants. */
  795         if (chan->chan_adapter->adapt_accesschk != NULL &&
  796             (*chan->chan_adapter->adapt_accesschk)(periph, &sa.sa_inqbuf))
  797                 goto bad;
  798 
  799         if (checkdtype) {
  800                 switch (periph->periph_type) {
  801                 case T_DIRECT:
  802                 case T_SEQUENTIAL:
  803                 case T_PRINTER:
  804                 case T_PROCESSOR:
  805                 case T_WORM:
  806                 case T_CDROM:
  807                 case T_SCANNER:
  808                 case T_OPTICAL:
  809                 case T_CHANGER:
  810                 case T_COMM:
  811                 case T_IT8_1:
  812                 case T_IT8_2:
  813                 case T_STORARRAY:
  814                 case T_ENCLOSURE:
  815                 case T_SIMPLE_DIRECT:
  816                 case T_OPTIC_CARD_RW:
  817                 case T_OBJECT_STORED:
  818                 default:
  819                         break;
  820                 case T_NODEVICE:
  821                         goto bad;
  822                 }
  823         }
  824 
  825         sa.sa_periph = periph;
  826         sa.sa_inqbuf.type = inqbuf.device;
  827         sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
  828             T_REMOV : T_FIXED;
  829         sa.sa_inqbuf.vendor = inqbuf.vendor;
  830         sa.sa_inqbuf.product = inqbuf.product;
  831         sa.sa_inqbuf.revision = inqbuf.revision;
  832         sa.scsipi_info.scsi_version = inqbuf.version;
  833         sa.sa_inqptr = &inqbuf;
  834 
  835         finger = (struct scsi_quirk_inquiry_pattern *)scsipi_inqmatch(
  836             &sa.sa_inqbuf, (caddr_t)scsi_quirk_patterns,
  837             sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
  838             sizeof(scsi_quirk_patterns[0]), &priority);
  839 
  840         if (finger != NULL)
  841                 quirks = finger->quirks;
  842         else
  843                 quirks = 0;
  844 
  845         /*
  846          * Determine the operating mode capabilities of the device.
  847          */
  848         if (periph->periph_version >= 2) {
  849                 if ((inqbuf.flags3 & SID_CmdQue) != 0 &&
  850                     (quirks & PQUIRK_NOTAG) == 0)
  851                         periph->periph_cap |= PERIPH_CAP_TQING;
  852                 if ((inqbuf.flags3 & SID_Linked) != 0)
  853                         periph->periph_cap |= PERIPH_CAP_LINKCMDS;
  854                 if ((inqbuf.flags3 & SID_Sync) != 0 &&
  855                     (quirks & PQUIRK_NOSYNC) == 0)
  856                         periph->periph_cap |= PERIPH_CAP_SYNC;
  857                 if ((inqbuf.flags3 & SID_WBus16) != 0 &&
  858                     (quirks & PQUIRK_NOWIDE) == 0)
  859                         periph->periph_cap |= PERIPH_CAP_WIDE16;
  860                 if ((inqbuf.flags3 & SID_WBus32) != 0 &&
  861                     (quirks & PQUIRK_NOWIDE) == 0)
  862                         periph->periph_cap |= PERIPH_CAP_WIDE32;
  863                 if ((inqbuf.flags3 & SID_SftRe) != 0)
  864                         periph->periph_cap |= PERIPH_CAP_SFTRESET;
  865                 if ((inqbuf.flags3 & SID_RelAdr) != 0)
  866                         periph->periph_cap |= PERIPH_CAP_RELADR;
  867                 /* SPC-2 */
  868                 if (periph->periph_version >= 3 &&
  869                     !(quirks & PQUIRK_CAP_NODT)){
  870                         /*
  871                          * Report ST clocking though CAP_WIDExx/CAP_SYNC.
  872                          * If the device only supports DT, clear these
  873                          * flags (DT implies SYNC and WIDE)
  874                          */
  875                         switch (inqbuf.flags4 & SID_Clocking) {
  876                         case SID_CLOCKING_DT_ONLY:
  877                                 periph->periph_cap &=
  878                                     ~(PERIPH_CAP_SYNC |
  879                                       PERIPH_CAP_WIDE16 |
  880                                       PERIPH_CAP_WIDE32);
  881                                 /* FALLTHOUGH */
  882                         case SID_CLOCKING_SD_DT:
  883                                 periph->periph_cap |= PERIPH_CAP_DT;
  884                                 break;
  885                         default: /* ST only or invalid */
  886                                 /* nothing to do */
  887                                 break;
  888                         }
  889                 }
  890                 if (periph->periph_version >= 3) {
  891                         if (inqbuf.flags4 & SID_IUS)
  892                                 periph->periph_cap |= PERIPH_CAP_IUS;
  893                         if (inqbuf.flags4 & SID_QAS)
  894                                 periph->periph_cap |= PERIPH_CAP_QAS;
  895                 }
  896         }
  897         if (quirks & PQUIRK_CAP_SYNC)
  898                 periph->periph_cap |= PERIPH_CAP_SYNC;
  899         if (quirks & PQUIRK_CAP_WIDE16)
  900                 periph->periph_cap |= PERIPH_CAP_WIDE16;
  901 
  902         /*
  903          * Now apply any quirks from the table.
  904          */
  905         periph->periph_quirks |= quirks;
  906         if (periph->periph_version == 0 &&
  907             (periph->periph_quirks & PQUIRK_FORCELUNS) == 0)
  908                 periph->periph_quirks |= PQUIRK_NOLUNS;
  909 
  910         if ((periph->periph_quirks & PQUIRK_NOLUNS) == 0)
  911                 docontinue = 1;
  912 
  913         if ((cf = config_search(scsibussubmatch, &sc->sc_dev, &sa)) != NULL) {
  914                 scsipi_insert_periph(chan, periph);
  915                 /*
  916                  * XXX Can't assign periph_dev here, because we'll
  917                  * XXX need it before config_attach() returns.  Must
  918                  * XXX assign it in periph driver.
  919                  */
  920                 (void) config_attach(&sc->sc_dev, cf, &sa, scsibusprint);
  921         } else {
  922                 scsibusprint(&sa, sc->sc_dev.dv_xname);
  923                 aprint_normal(" not configured\n");
  924                 goto bad;
  925         }
  926 
  927         return (docontinue);
  928 
  929 bad:
  930         free(periph, M_DEVBUF);
  931         return (docontinue);
  932 }
  933 
  934 /****** Entry points for user control of the SCSI bus. ******/
  935 
  936 int
  937 scsibusopen(dev, flag, fmt, p)
  938         dev_t dev;
  939         int flag, fmt;
  940         struct proc *p;
  941 {
  942         struct scsibus_softc *sc;
  943         int error, unit = minor(dev);
  944 
  945         if (unit >= scsibus_cd.cd_ndevs ||
  946             (sc = scsibus_cd.cd_devs[unit]) == NULL)
  947                 return (ENXIO);
  948 
  949         if (sc->sc_flags & SCSIBUSF_OPEN)
  950                 return (EBUSY);
  951 
  952         if ((error = scsipi_adapter_addref(sc->sc_channel->chan_adapter)) != 0)
  953                 return (error);
  954 
  955         sc->sc_flags |= SCSIBUSF_OPEN;
  956 
  957         return (0);
  958 }
  959 
  960 int
  961 scsibusclose(dev, flag, fmt, p)
  962         dev_t dev;
  963         int flag, fmt;
  964         struct proc *p;
  965 {
  966         struct scsibus_softc *sc = scsibus_cd.cd_devs[minor(dev)];
  967 
  968         scsipi_adapter_delref(sc->sc_channel->chan_adapter);
  969 
  970         sc->sc_flags &= ~SCSIBUSF_OPEN;
  971 
  972         return (0);
  973 }
  974 
  975 int
  976 scsibusioctl(dev, cmd, addr, flag, p)
  977         dev_t dev;
  978         u_long cmd;
  979         caddr_t addr;
  980         int flag;
  981         struct proc *p;
  982 {
  983         struct scsibus_softc *sc = scsibus_cd.cd_devs[minor(dev)];
  984         struct scsipi_channel *chan = sc->sc_channel;
  985         int error;
  986 
  987         /*
  988          * Enforce write permission for ioctls that change the
  989          * state of the bus.  Host adapter specific ioctls must
  990          * be checked by the adapter driver.
  991          */
  992         switch (cmd) {
  993         case SCBUSIOSCAN:
  994         case SCBUSIODETACH:
  995         case SCBUSIORESET:
  996                 if ((flag & FWRITE) == 0)
  997                         return (EBADF);
  998         }
  999 
 1000         switch (cmd) {
 1001         case SCBUSIOSCAN:
 1002             {
 1003                 struct scbusioscan_args *a =
 1004                     (struct scbusioscan_args *)addr;
 1005 
 1006                 error = scsi_probe_bus(sc, a->sa_target, a->sa_lun);
 1007                 break;
 1008             }
 1009 
 1010         case SCBUSIODETACH:
 1011             {
 1012                 struct scbusiodetach_args *a =
 1013                     (struct scbusiodetach_args *)addr;
 1014 
 1015                 error = scsipi_target_detach(chan, a->sa_target, a->sa_lun, 0);
 1016                 break;
 1017             }
 1018 
 1019 
 1020         case SCBUSIORESET:
 1021                 /* FALLTHROUGH */
 1022         default:
 1023                 if (chan->chan_adapter->adapt_ioctl == NULL)
 1024                         error = ENOTTY;
 1025                 else
 1026                         error = (*chan->chan_adapter->adapt_ioctl)(chan,
 1027                             cmd, addr, flag, p);
 1028                 break;
 1029         }
 1030 
 1031         return (error);
 1032 }

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