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scsiconf.c revision 1.184
      1 /*	$NetBSD: scsiconf.c,v 1.184 2002/05/15 11:43:22 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 (at) 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 (at) tfs.com) Sept 1992
     55  */
     56 
     57 #include <sys/cdefs.h>
     58 __KERNEL_RCSID(0, "$NetBSD: scsiconf.c,v 1.184 2002/05/15 11:43:22 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 
     71 #include <dev/scsipi/scsi_all.h>
     72 #include <dev/scsipi/scsipi_all.h>
     73 #include <dev/scsipi/scsiconf.h>
     74 
     75 #include "locators.h"
     76 
     77 const struct scsipi_periphsw scsi_probe_dev = {
     78 	NULL,
     79 	NULL,
     80 	NULL,
     81 	NULL,
     82 };
     83 
     84 int	scsi_probe_device __P((struct scsibus_softc *, int, int));
     85 
     86 int	scsibusmatch __P((struct device *, struct cfdata *, void *));
     87 void	scsibusattach __P((struct device *, struct device *, void *));
     88 int	scsibusactivate __P((struct device *, enum devact));
     89 int	scsibusdetach __P((struct device *, int flags));
     90 
     91 int	scsibussubmatch __P((struct device *, struct cfdata *, void *));
     92 
     93 struct cfattach scsibus_ca = {
     94 	sizeof(struct scsibus_softc), scsibusmatch, scsibusattach,
     95 	    scsibusdetach, scsibusactivate,
     96 };
     97 
     98 extern struct cfdriver scsibus_cd;
     99 
    100 int	scsibusprint __P((void *, const char *));
    101 void	scsibus_config_interrupts __P((struct device *));
    102 
    103 cdev_decl(scsibus);
    104 
    105 const struct scsipi_bustype scsi_bustype = {
    106 	SCSIPI_BUSTYPE_SCSI,
    107 	scsi_scsipi_cmd,
    108 	scsipi_interpret_sense,
    109 	scsi_print_addr,
    110 	scsi_kill_pending,
    111 };
    112 
    113 int
    114 scsiprint(aux, pnp)
    115 	void *aux;
    116 	const char *pnp;
    117 {
    118 	struct scsipi_channel *chan = aux;
    119 	struct scsipi_adapter *adapt = chan->chan_adapter;
    120 
    121 	/* only "scsibus"es can attach to "scsi"s; easy. */
    122 	if (pnp)
    123 		printf("scsibus at %s", pnp);
    124 
    125 	/* don't print channel if the controller says there can be only one. */
    126 	if (adapt->adapt_nchannels != 1)
    127 		printf(" channel %d", chan->chan_channel);
    128 
    129 	return (UNCONF);
    130 }
    131 
    132 int
    133 scsibusmatch(parent, cf, aux)
    134 	struct device *parent;
    135 	struct cfdata *cf;
    136 	void *aux;
    137 {
    138 	struct scsipi_channel *chan = aux;
    139 
    140 	if (chan->chan_bustype->bustype_type != SCSIPI_BUSTYPE_SCSI)
    141 		return 0;
    142 
    143 	if (cf->cf_loc[SCSICF_CHANNEL] != chan->chan_channel &&
    144 	    cf->cf_loc[SCSICF_CHANNEL] != SCSICF_CHANNEL_DEFAULT)
    145 		return (0);
    146 
    147 	return (1);
    148 }
    149 
    150 void
    151 scsibusattach(parent, self, aux)
    152 	struct device *parent, *self;
    153 	void *aux;
    154 {
    155 	struct scsibus_softc *sc = (void *) self;
    156 	struct scsipi_channel *chan = aux;
    157 
    158 	sc->sc_channel = chan;
    159 	chan->chan_name = sc->sc_dev.dv_xname;
    160 
    161 	/* Initialize the channel structure first */
    162 	if (scsipi_channel_init(chan)) {
    163 		printf(": failed to init channel\n");
    164 		return;
    165 	}
    166 
    167 	printf(": %d targets, %d luns per target\n",
    168 	    chan->chan_ntargets, chan->chan_nluns);
    169 
    170 
    171 	/*
    172 	 * Defer configuration of the children until interrupts
    173 	 * are enabled.
    174 	 */
    175 	config_interrupts(self, scsibus_config_interrupts);
    176 }
    177 
    178 void
    179 scsibus_config_interrupts(self)
    180 	struct device *self;
    181 {
    182 	struct scsibus_softc *sc = (void *) self;
    183 
    184 #ifndef SCSI_DELAY
    185 #define SCSI_DELAY 2
    186 #endif
    187 
    188 	if ((sc->sc_channel->chan_flags & SCSIPI_CHAN_NOSETTLE) == 0 &&
    189 	    SCSI_DELAY > 0) {
    190 		printf("%s: waiting %d seconds for devices to settle...\n",
    191 		    self->dv_xname, SCSI_DELAY);
    192 		/* ...an identifier we know no one will use... */
    193 		(void) tsleep(scsibus_config_interrupts, PRIBIO,
    194 		    "scsidly", SCSI_DELAY * hz);
    195 	}
    196 
    197 	scsi_probe_bus(sc, -1, -1);
    198 }
    199 
    200 int
    201 scsibussubmatch(parent, cf, aux)
    202 	struct device *parent;
    203 	struct cfdata *cf;
    204 	void *aux;
    205 {
    206 	struct scsipibus_attach_args *sa = aux;
    207 	struct scsipi_periph *periph = sa->sa_periph;
    208 
    209 	if (cf->cf_loc[SCSIBUSCF_TARGET] != SCSIBUSCF_TARGET_DEFAULT &&
    210 	    cf->cf_loc[SCSIBUSCF_TARGET] != periph->periph_target)
    211 		return (0);
    212 	if (cf->cf_loc[SCSIBUSCF_LUN] != SCSIBUSCF_LUN_DEFAULT &&
    213 	    cf->cf_loc[SCSIBUSCF_LUN] != periph->periph_lun)
    214 		return (0);
    215 	return ((*cf->cf_attach->ca_match)(parent, cf, aux));
    216 }
    217 
    218 int
    219 scsibusactivate(self, act)
    220 	struct device *self;
    221 	enum devact act;
    222 {
    223 	struct scsibus_softc *sc = (void *) self;
    224 	struct scsipi_channel *chan = sc->sc_channel;
    225 	struct scsipi_periph *periph;
    226 	int target, lun, error = 0, s;
    227 
    228 	s = splbio();
    229 	switch (act) {
    230 	case DVACT_ACTIVATE:
    231 		error = EOPNOTSUPP;
    232 		break;
    233 
    234 	case DVACT_DEACTIVATE:
    235 		for (target = 0; target < chan->chan_ntargets;
    236 		     target++) {
    237 			if (target == chan->chan_id)
    238 				continue;
    239 			for (lun = 0; lun < chan->chan_nluns; lun++) {
    240 				periph = scsipi_lookup_periph(chan,
    241 				    target, lun);
    242 				if (periph == NULL)
    243 					continue;
    244 				error = config_deactivate(periph->periph_dev);
    245 				if (error)
    246 					goto out;
    247 			}
    248 		}
    249 		break;
    250 	}
    251  out:
    252 	splx(s);
    253 	return (error);
    254 }
    255 
    256 int
    257 scsibusdetach(self, flags)
    258 	struct device *self;
    259 	int flags;
    260 {
    261 	struct scsibus_softc *sc = (void *) self;
    262 	struct scsipi_channel *chan = sc->sc_channel;
    263 
    264 	/*
    265 	 * Shut down the channel.
    266 	 */
    267 	scsipi_channel_shutdown(chan);
    268 
    269 	/*
    270 	 * Now detach all of the periphs.
    271 	 */
    272 	return scsipi_target_detach(chan, -1, -1, flags);
    273 }
    274 
    275 /*
    276  * Probe the requested scsi bus. It must be already set up.
    277  * target and lun optionally narrow the search if not -1
    278  */
    279 int
    280 scsi_probe_bus(sc, target, lun)
    281 	struct scsibus_softc *sc;
    282 	int target, lun;
    283 {
    284 	struct scsipi_channel *chan = sc->sc_channel;
    285 	int maxtarget, mintarget, maxlun, minlun;
    286 	int error;
    287 
    288 	if (target == -1) {
    289 		maxtarget = chan->chan_ntargets - 1;
    290 		mintarget = 0;
    291 	} else {
    292 		if (target < 0 || target >= chan->chan_ntargets)
    293 			return (EINVAL);
    294 		maxtarget = mintarget = target;
    295 	}
    296 
    297 	if (lun == -1) {
    298 		maxlun = chan->chan_nluns - 1;
    299 		minlun = 0;
    300 	} else {
    301 		if (lun < 0 || lun >= chan->chan_nluns)
    302 			return (EINVAL);
    303 		maxlun = minlun = lun;
    304 	}
    305 
    306 	/*
    307 	 * Some HBAs provide an abstracted view of the bus; give them an
    308 	 * oppertunity to re-scan it before we do.
    309 	 */
    310 	if (chan->chan_adapter->adapt_ioctl != NULL)
    311 		(*chan->chan_adapter->adapt_ioctl)(chan, SCBUSIOLLSCAN, NULL,
    312 		    0, curproc);
    313 
    314 	if ((error = scsipi_adapter_addref(chan->chan_adapter)) != 0)
    315 		return (error);
    316 	for (target = mintarget; target <= maxtarget; target++) {
    317 		if (target == chan->chan_id)
    318 			continue;
    319 		for (lun = minlun; lun <= maxlun; lun++) {
    320 			/*
    321 			 * See if there's a device present, and configure it.
    322 			 */
    323 			if (scsi_probe_device(sc, target, lun) == 0)
    324 				break;
    325 			/* otherwise something says we should look further */
    326 		}
    327 
    328 		/*
    329 		 * Now that we've discovered all of the LUNs on this
    330 		 * I_T Nexus, update the xfer mode for all of them
    331 		 * that we know about.
    332 		 */
    333 		scsipi_set_xfer_mode(chan, target, 1);
    334 	}
    335 	scsipi_adapter_delref(chan->chan_adapter);
    336 	return (0);
    337 }
    338 
    339 /*
    340  * Print out autoconfiguration information for a subdevice.
    341  *
    342  * This is a slight abuse of 'standard' autoconfiguration semantics,
    343  * because 'print' functions don't normally print the colon and
    344  * device information.  However, in this case that's better than
    345  * either printing redundant information before the attach message,
    346  * or having the device driver call a special function to print out
    347  * the standard device information.
    348  */
    349 int
    350 scsibusprint(aux, pnp)
    351 	void *aux;
    352 	const char *pnp;
    353 {
    354 	struct scsipibus_attach_args *sa = aux;
    355 	struct scsipi_inquiry_pattern *inqbuf;
    356 	u_int8_t type;
    357 	const char *dtype, *qtype;
    358 	char vendor[33], product[65], revision[17];
    359 	int target, lun;
    360 
    361 	if (pnp != NULL)
    362 		printf("%s", pnp);
    363 
    364 	inqbuf = &sa->sa_inqbuf;
    365 
    366 	target = sa->sa_periph->periph_target;
    367 	lun = sa->sa_periph->periph_lun;
    368 	type = inqbuf->type & SID_TYPE;
    369 
    370 	/*
    371 	 * Figure out basic device type and qualifier.
    372 	 */
    373 	dtype = 0;
    374 	switch (inqbuf->type & SID_QUAL) {
    375 	case SID_QUAL_LU_PRESENT:
    376 		qtype = "";
    377 		break;
    378 
    379 	case SID_QUAL_LU_NOTPRESENT:
    380 		qtype = " offline";
    381 		break;
    382 
    383 	case SID_QUAL_reserved:
    384 	case SID_QUAL_LU_NOT_SUPP:
    385 		panic("scsibusprint: impossible qualifier");
    386 
    387 	default:
    388 		qtype = "";
    389 		dtype = "vendor-unique";
    390 		break;
    391 	}
    392 	if (dtype == NULL)
    393 		dtype = scsipi_dtype(type);
    394 
    395 	scsipi_strvis(vendor, 33, inqbuf->vendor, 8);
    396 	scsipi_strvis(product, 65, inqbuf->product, 16);
    397 	scsipi_strvis(revision, 17, inqbuf->revision, 4);
    398 
    399 	printf(" target %d lun %d: <%s, %s, %s> SCSI%d %d/%s %s%s",
    400 	    target, lun, vendor, product, revision,
    401 	    sa->scsipi_info.scsi_version & SID_ANSII, type, dtype,
    402 	    inqbuf->removable ? "removable" : "fixed", qtype);
    403 
    404 	return (UNCONF);
    405 }
    406 
    407 const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
    408 	{{T_CDROM, T_REMOV,
    409 	 "CHINON  ", "CD-ROM CDS-431  ", ""},     PQUIRK_NOLUNS},
    410 	{{T_CDROM, T_REMOV,
    411 	 "Chinon  ", "CD-ROM CDS-525  ", ""},     PQUIRK_NOLUNS},
    412 	{{T_CDROM, T_REMOV,
    413 	 "CHINON  ", "CD-ROM CDS-535  ", ""},     PQUIRK_NOLUNS},
    414 	{{T_CDROM, T_REMOV,
    415 	 "DEC     ", "RRD42   (C) DEC ", ""},     PQUIRK_NOLUNS},
    416 	{{T_CDROM, T_REMOV,
    417 	 "DENON   ", "DRD-25X         ", "V"},    PQUIRK_NOLUNS},
    418 	{{T_CDROM, T_REMOV,
    419 	 "GENERIC ", "CRD-BP2         ", ""},     PQUIRK_NOLUNS},
    420 	{{T_CDROM, T_REMOV,
    421 	 "HP      ", "C4324/C4325     ", ""},     PQUIRK_NOLUNS},
    422 	{{T_CDROM, T_REMOV,
    423 	 "IMS     ", "CDD521/10       ", "2.06"}, PQUIRK_NOLUNS},
    424 	{{T_CDROM, T_REMOV,
    425 	 "MATSHITA", "CD-ROM CR-5XX   ", "1.0b"}, PQUIRK_NOLUNS},
    426 	{{T_CDROM, T_REMOV,
    427 	 "MEDAVIS ", "RENO CD-ROMX2A  ", ""},     PQUIRK_NOLUNS},
    428 	{{T_CDROM, T_REMOV,
    429 	 "MEDIAVIS", "CDR-H93MV       ", "1.3"},  PQUIRK_NOLUNS},
    430 	{{T_CDROM, T_REMOV,
    431 	 "NEC     ", "CD-ROM DRIVE:55 ", ""},     PQUIRK_NOLUNS},
    432 	{{T_CDROM, T_REMOV,
    433 	 "NEC     ", "CD-ROM DRIVE:83 ", ""},     PQUIRK_NOLUNS},
    434 	{{T_CDROM, T_REMOV,
    435 	 "NEC     ", "CD-ROM DRIVE:84 ", ""},     PQUIRK_NOLUNS},
    436 	{{T_CDROM, T_REMOV,
    437 	 "NEC     ", "CD-ROM DRIVE:841", ""},     PQUIRK_NOLUNS},
    438 	{{T_CDROM, T_REMOV,
    439 	 "PIONEER ", "CD-ROM DR-124X  ", "1.01"}, PQUIRK_NOLUNS},
    440 	{{T_CDROM, T_REMOV,
    441 	 "SONY    ", "CD-ROM CDU-541  ", ""},     PQUIRK_NOLUNS},
    442 	{{T_CDROM, T_REMOV,
    443 	 "SONY    ", "CD-ROM CDU-55S  ", ""},     PQUIRK_NOLUNS},
    444 	{{T_CDROM, T_REMOV,
    445 	 "SONY    ", "CD-ROM CDU-561  ", ""},     PQUIRK_NOLUNS},
    446 	{{T_CDROM, T_REMOV,
    447 	 "SONY    ", "CD-ROM CDU-8003A", ""},     PQUIRK_NOLUNS},
    448 	{{T_CDROM, T_REMOV,
    449 	 "SONY    ", "CD-ROM CDU-8012 ", ""},     PQUIRK_NOLUNS},
    450 	{{T_CDROM, T_REMOV,
    451 	 "TEAC    ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    452 	{{T_CDROM, T_REMOV,
    453 	 "TEAC    ", "CD-ROM CD-56S   ", "1.0B"}, PQUIRK_NOLUNS},
    454 	{{T_CDROM, T_REMOV,
    455 	 "TEXEL   ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    456 	{{T_CDROM, T_REMOV,
    457 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.09"}, PQUIRK_NOLUNS},
    458 	{{T_CDROM, T_REMOV,
    459 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, PQUIRK_NOLUNS},
    460 	{{T_CDROM, T_REMOV,
    461 	 "TOSHIBA ", "XM-4101TASUNSLCD", "1755"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    462 	/* "IBM CDRM00201     !F" 0724 is an IBM OEM Toshiba XM-4101BME */
    463 	{{T_CDROM, T_REMOV,
    464 	 "IBM     ", "CDRM00201     !F", "0724"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    465 	{{T_CDROM, T_REMOV,
    466 	 "ShinaKen", "CD-ROM DM-3x1S",   "1.04"}, PQUIRK_NOLUNS},
    467 	{{T_CDROM, T_REMOV,
    468 	 "JVC     ", "R2626",            ""},     PQUIRK_NOLUNS},
    469 	{{T_CDROM, T_REMOV,
    470 	 "YAMAHA", "CRW8424S",           ""},     PQUIRK_NOLUNS},
    471 	{{T_CDROM, T_REMOV,
    472 	 "VMware", "Virtual",            "1.0"},
    473 				PQUIRK_NOSTARTUNIT|PQUIRK_NODOORLOCK},
    474 
    475 	{{T_DIRECT, T_FIXED,
    476 	 "MICROP  ", "1588-15MBSUN0669", ""},     PQUIRK_AUTOSAVE},
    477 	{{T_DIRECT, T_FIXED,
    478 	 "MICROP  ", "2217-15MQ1091501", ""},     PQUIRK_NOSYNCCACHE},
    479 	{{T_OPTICAL, T_REMOV,
    480 	 "EPSON   ", "OMD-5010        ", "3.08"}, PQUIRK_NOLUNS},
    481 	{{T_DIRECT, T_FIXED,
    482 	 "TOSHIBA ","CD-ROM XM-3401TA",  "0283"}, PQUIRK_CDROM|PQUIRK_NOLUNS},
    483 	{{T_DIRECT, T_FIXED,
    484 	 "TOSHIBA ", "CD-ROM DRIVE:XM",  "1971"}, PQUIRK_CDROM|PQUIRK_NOLUNS},
    485 	{{T_DIRECT, T_FIXED,
    486 	 "ADAPTEC ", "AEC-4412BD",       "1.2A"}, PQUIRK_NOMODESENSE},
    487 	{{T_DIRECT, T_FIXED,
    488 	 "ADAPTEC ", "ACB-4000",         ""},     PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE|PQUIRK_NOMODESENSE},
    489 	{{T_DIRECT, T_FIXED,
    490 	 "DEC     ", "RZ55     (C) DEC", ""},     PQUIRK_AUTOSAVE},
    491 	{{T_DIRECT, T_FIXED,
    492 	 "EMULEX  ", "MD21/S2     ESDI", "A00"},
    493 				PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE},
    494 	/* Gives non-media hardware failure in response to start-unit command */
    495 	{{T_DIRECT, T_FIXED,
    496 	 "HITACHI", "DK515C",            "CP16"}, PQUIRK_NOSTARTUNIT},
    497 	{{T_DIRECT, T_FIXED,
    498 	 "HITACHI", "DK515C",            "CP15"}, PQUIRK_NOSTARTUNIT},
    499 	{{T_DIRECT, T_FIXED,
    500 	 "MICROP",  "1548-15MZ1077801",  "HZ2P"}, PQUIRK_NOTAG},
    501 	{{T_DIRECT, T_FIXED,
    502 	 "HP      ", "C372",             ""},     PQUIRK_NOTAG},
    503 	{{T_DIRECT, T_FIXED,
    504 	 "IBMRAID ", "0662S",		 ""},     PQUIRK_AUTOSAVE},
    505 	{{T_DIRECT, T_FIXED,
    506 	 "IBM     ", "0663H",		 ""},     PQUIRK_AUTOSAVE},
    507 	{{T_DIRECT, T_FIXED,
    508 	 "IBM",	     "0664",		 ""},     PQUIRK_AUTOSAVE},
    509 	{{T_DIRECT, T_FIXED,
    510 	/* improperly report DT-only sync mode */
    511 	 "IBM     ", "DXHS36D",		 ""},
    512 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    513 	{{T_DIRECT, T_FIXED,
    514 	 "IBM     ", "H3171-S2",	 ""},
    515 				PQUIRK_NOLUNS|PQUIRK_AUTOSAVE},
    516 	{{T_DIRECT, T_FIXED,
    517 	 "IBM     ", "KZ-C",		 ""},	  PQUIRK_AUTOSAVE},
    518 	/* Broken IBM disk */
    519 	{{T_DIRECT, T_FIXED,
    520 	 ""	   , "DFRSS2F",		 ""},	  PQUIRK_AUTOSAVE},
    521 	{{T_DIRECT, T_REMOV,
    522 	 "MPL     ", "MC-DISK-        ", ""},     PQUIRK_NOLUNS},
    523 	{{T_DIRECT, T_FIXED,
    524 	 "MAXTOR  ", "XT-3280         ", ""},     PQUIRK_NOLUNS},
    525 	{{T_DIRECT, T_FIXED,
    526 	 "MAXTOR  ", "XT-4380S        ", ""},     PQUIRK_NOLUNS},
    527 	{{T_DIRECT, T_FIXED,
    528 	 "MAXTOR  ", "MXT-1240S       ", ""},     PQUIRK_NOLUNS},
    529 	{{T_DIRECT, T_FIXED,
    530 	 "MAXTOR  ", "XT-4170S        ", ""},     PQUIRK_NOLUNS},
    531 	{{T_DIRECT, T_FIXED,
    532 	 "MAXTOR  ", "XT-8760S",         ""},     PQUIRK_NOLUNS},
    533 	{{T_DIRECT, T_FIXED,
    534 	 "MAXTOR  ", "LXT-213S        ", ""},     PQUIRK_NOLUNS},
    535 	{{T_DIRECT, T_FIXED,
    536 	 "MAXTOR  ", "LXT-213S SUN0207", ""},     PQUIRK_NOLUNS},
    537 	{{T_DIRECT, T_FIXED,
    538 	 "MAXTOR  ", "LXT-200S        ", ""},     PQUIRK_NOLUNS},
    539 	{{T_DIRECT, T_FIXED,
    540 	 "MEGADRV ", "EV1000",           ""},     PQUIRK_NOMODESENSE},
    541 	{{T_DIRECT, T_FIXED,
    542 	 "MICROP", "1991-27MZ",          ""},     PQUIRK_NOTAG},
    543 	{{T_DIRECT, T_FIXED,
    544 	 "MST     ", "SnapLink        ", ""},     PQUIRK_NOLUNS},
    545 	{{T_DIRECT, T_FIXED,
    546 	 "NEC     ", "D3847           ", "0307"}, PQUIRK_NOLUNS},
    547 	{{T_DIRECT, T_FIXED,
    548 	 "QUANTUM ", "ELS85S          ", ""},     PQUIRK_AUTOSAVE},
    549 	{{T_DIRECT, T_FIXED,
    550 	 "QUANTUM ", "LPS525S         ", ""},     PQUIRK_NOLUNS},
    551 	{{T_DIRECT, T_FIXED,
    552 	 "QUANTUM ", "P105S 910-10-94x", ""},     PQUIRK_NOLUNS},
    553 	{{T_DIRECT, T_FIXED,
    554 	 "QUANTUM ", "PD1225S         ", ""},     PQUIRK_NOLUNS},
    555 	{{T_DIRECT, T_FIXED,
    556 	 "QUANTUM ", "PD210S   SUN0207", ""},     PQUIRK_NOLUNS},
    557 	{{T_DIRECT, T_FIXED,
    558 	 "RODIME  ", "RO3000S         ", ""},     PQUIRK_NOLUNS},
    559 	{{T_DIRECT, T_FIXED,
    560 	 "SEAGATE ", "ST125N          ", ""},     PQUIRK_NOLUNS},
    561 	{{T_DIRECT, T_FIXED,
    562 	 "SEAGATE ", "ST157N          ", ""},     PQUIRK_NOLUNS},
    563 	{{T_DIRECT, T_FIXED,
    564 	 "SEAGATE ", "ST296           ", ""},     PQUIRK_NOLUNS},
    565 	{{T_DIRECT, T_FIXED,
    566 	 "SEAGATE ", "ST296N          ", ""},     PQUIRK_NOLUNS},
    567 	{{T_DIRECT, T_FIXED,
    568 	 "SEAGATE ", "ST11200N SUN1.05", ""},     PQUIRK_NOTAG},
    569 	{{T_DIRECT, T_FIXED,
    570 	 "SEAGATE ", "ST15150N        ", ""},     PQUIRK_NOTAG},
    571 	{{T_DIRECT, T_FIXED,
    572 	 "SEAGATE ", "ST19171",          ""},     PQUIRK_NOMODESENSE},
    573 	{{T_DIRECT, T_FIXED,
    574 	 "SEAGATE ", "ST32430N",         ""},     PQUIRK_CAP_SYNC},
    575 	{{T_DIRECT, T_FIXED,
    576 	 "SEAGATE ", "ST34501FC       ", ""},     PQUIRK_NOMODESENSE},
    577 	{{T_DIRECT, T_FIXED,
    578 	 "TOSHIBA ", "MK538FB         ", "6027"}, PQUIRK_NOLUNS},
    579 	{{T_DIRECT, T_FIXED,
    580 	 "VMware", "Virtual",           "1.0"},
    581 				PQUIRK_NOSTARTUNIT|PQUIRK_NODOORLOCK},
    582 	{{T_DIRECT, T_FIXED,	/* XXX move to umass */
    583 	 "Maxtor 4", "D080H4",           "DAH0"}, PQUIRK_NOMODESENSE},
    584 	{{T_DIRECT, T_FIXED,	/* XXX move to umass */
    585 	 "Maxtor 4", "D040H2",           "DAH0"}, PQUIRK_NOMODESENSE},
    586 
    587 	{{T_DIRECT, T_REMOV,
    588 	 "iomega", "jaz 1GB", 		 ""},	  PQUIRK_NOMODESENSE},
    589 	{{T_DIRECT, T_REMOV,
    590 	 "IOMEGA", "ZIP 100",		 ""},	  PQUIRK_NOMODESENSE},
    591 	{{T_DIRECT, T_REMOV,
    592 	 "IOMEGA", "ZIP 100",		 "J.03"},
    593 				PQUIRK_NOMODESENSE|PQUIRK_NOLUNS},
    594 	/* Letting the motor run kills floppy drives and disks quite fast. */
    595 	{{T_DIRECT, T_REMOV,
    596 	 "TEAC", "FC-1",		 ""},	  PQUIRK_NOSTARTUNIT},
    597 	{{T_DIRECT, T_REMOV,
    598 	 "INSITE", "I325VM",             ""},
    599 				PQUIRK_NOLUNS|PQUIRK_NODOORLOCK},
    600 
    601 	/* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
    602 	{{T_SEQUENTIAL, T_REMOV,
    603 	 "        ", "                ", "    "}, PQUIRK_NOLUNS},
    604 	{{T_SEQUENTIAL, T_REMOV,
    605 	 "EMULEX  ", "MT-02 QIC       ", ""},     PQUIRK_NOLUNS},
    606 	{{T_SEQUENTIAL, T_REMOV,
    607 	 "CALIPER ", "CP150           ", ""},     PQUIRK_NOLUNS},
    608 	{{T_SEQUENTIAL, T_REMOV,
    609 	 "EXABYTE ", "EXB-8200        ", ""},     PQUIRK_NOLUNS},
    610 	{{T_SEQUENTIAL, T_REMOV,
    611 	 "SONY    ", "GY-10C          ", ""},     PQUIRK_NOLUNS},
    612 	{{T_SEQUENTIAL, T_REMOV,
    613 	 "SONY    ", "SDT-2000        ", "2.09"}, PQUIRK_NOLUNS},
    614 	{{T_SEQUENTIAL, T_REMOV,
    615 	 "SONY    ", "SDT-5000        ", "3."},   PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    616 	{{T_SEQUENTIAL, T_REMOV,
    617 	 "SONY    ", "SDT-5200        ", "3."},   PQUIRK_NOLUNS},
    618 	{{T_SEQUENTIAL, T_REMOV,
    619 	 "TANDBERG", " TDC 3600       ", ""},     PQUIRK_NOLUNS},
    620 	/* Following entry reported as a Tandberg 3600; ref. PR1933 */
    621 	{{T_SEQUENTIAL, T_REMOV,
    622 	 "ARCHIVE ", "VIPER 150  21247", ""},     PQUIRK_NOLUNS},
    623 	/* Following entry for a Cipher ST150S; ref. PR4171 */
    624 	{{T_SEQUENTIAL, T_REMOV,
    625 	 "ARCHIVE ", "VIPER 1500 21247", "2.2G"}, PQUIRK_NOLUNS},
    626 	{{T_SEQUENTIAL, T_REMOV,
    627 	 "ARCHIVE ", "Python 28454-XXX", ""},     PQUIRK_NOLUNS},
    628 	{{T_SEQUENTIAL, T_REMOV,
    629 	 "WANGTEK ", "5099ES SCSI",      ""},     PQUIRK_NOLUNS},
    630 	{{T_SEQUENTIAL, T_REMOV,
    631 	 "WANGTEK ", "5150ES SCSI",      ""},     PQUIRK_NOLUNS},
    632 	{{T_SEQUENTIAL, T_REMOV,
    633 	 "WANGTEK ", "SCSI-36",		 ""},     PQUIRK_NOLUNS},
    634 	{{T_SEQUENTIAL, T_REMOV,
    635 	 "WangDAT ", "Model 1300      ", "02.4"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    636 	{{T_SEQUENTIAL, T_REMOV,
    637 	 "WangDAT ", "Model 2600      ", "01.7"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    638 	{{T_SEQUENTIAL, T_REMOV,
    639 	 "WangDAT ", "Model 3200      ", "02.2"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    640 	{{T_SEQUENTIAL, T_REMOV,
    641 	 "TEAC    ", "MT-2ST/N50      ", ""},     PQUIRK_NOLUNS},
    642 
    643 	{{T_SCANNER, T_FIXED,
    644 	 "RICOH   ", "IS60            ", "1R08"}, PQUIRK_NOLUNS},
    645 	{{T_SCANNER, T_FIXED,
    646 	 "UMAX    ", "Astra 1200S     ", "V2.9"}, PQUIRK_NOLUNS},
    647 	{{T_SCANNER, T_FIXED,
    648 	 "UMAX    ", "Astra 1220S     ", ""},     PQUIRK_NOLUNS},
    649 	{{T_SCANNER, T_FIXED,
    650 	 "UMAX    ", "UMAX S-6E       ", "V2.0"}, PQUIRK_NOLUNS},
    651 	{{T_SCANNER, T_FIXED,
    652 	 "UMAX    ", "UMAX S-12       ", "V2.1"}, PQUIRK_NOLUNS},
    653 	{{T_SCANNER, T_FIXED,
    654 	 "ULTIMA  ", "A6000C          ", ""},     PQUIRK_NOLUNS},
    655 	{{T_PROCESSOR, T_FIXED,
    656 	 "SYMBIOS",  "",                 ""},     PQUIRK_NOLUNS},
    657 	{{T_PROCESSOR, T_FIXED,
    658 	 "LITRONIC", "PCMCIA          ", ""},     PQUIRK_NOLUNS},
    659 	{{T_CHANGER, T_REMOV,
    660 	 "SONY    ", "CDL1100         ", ""},     PQUIRK_NOLUNS},
    661 	{{T_ENCLOSURE, T_FIXED,
    662 	 "SUN     ", "SENA            ", ""},     PQUIRK_NOLUNS},
    663 };
    664 
    665 /*
    666  * given a target and lun, ask the device what
    667  * it is, and find the correct driver table
    668  * entry.
    669  */
    670 int
    671 scsi_probe_device(sc, target, lun)
    672 	struct scsibus_softc *sc;
    673 	int target, lun;
    674 {
    675 	struct scsipi_channel *chan = sc->sc_channel;
    676 	struct scsipi_periph *periph;
    677 	struct scsipi_inquiry_data inqbuf;
    678 	struct scsi_quirk_inquiry_pattern *finger;
    679 	int checkdtype, priority, docontinue, quirks;
    680 	struct scsipibus_attach_args sa;
    681 	struct cfdata *cf;
    682 
    683 	/*
    684 	 * Assume no more luns to search after this one.
    685 	 * If we successfully get Inquiry data and after
    686 	 * merging quirks we find we can probe for more
    687 	 * luns, we will.
    688 	 */
    689 	docontinue = 0;
    690 
    691 	/* Skip this slot if it is already attached. */
    692 	if (scsipi_lookup_periph(chan, target, lun) != NULL)
    693 		return (docontinue);
    694 
    695 	periph = scsipi_alloc_periph(M_NOWAIT);
    696 	if (periph == NULL) {
    697 #ifdef	DIAGNOSTIC
    698 		printf("%s: cannot allocate periph for target %d lun %d\n",
    699 		    sc->sc_dev.dv_xname, target, lun);
    700 #endif
    701 		return (ENOMEM);
    702 	}
    703 	periph->periph_channel = chan;
    704 	periph->periph_switch = &scsi_probe_dev;
    705 
    706 	periph->periph_target = target;
    707 	periph->periph_lun = lun;
    708 	periph->periph_quirks = chan->chan_defquirks;
    709 
    710 #ifdef SCSIPI_DEBUG
    711 	if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_SCSI &&
    712 	    SCSIPI_DEBUG_TARGET == target &&
    713 	    SCSIPI_DEBUG_LUN == lun)
    714 		periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
    715 #endif
    716 
    717 	/*
    718 	 * Ask the device what it is
    719 	 */
    720 	(void) scsipi_test_unit_ready(periph,
    721 	    XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST |
    722 	    XS_CTL_IGNORE_NOT_READY | XS_CTL_IGNORE_MEDIA_CHANGE);
    723 
    724 #ifdef SCSI_2_DEF
    725 	/* some devices need to be told to go to SCSI2 */
    726 	/* However some just explode if you tell them this.. leave it out */
    727 	scsi_change_def(periph, XS_CTL_DISCOVERY | XS_CTL_SILENT);
    728 #endif /* SCSI_2_DEF */
    729 
    730 	/* Now go ask the device all about itself. */
    731 	memset(&inqbuf, 0, sizeof(inqbuf));
    732 	if (scsipi_inquire(periph, &inqbuf,
    733 	    XS_CTL_DISCOVERY | XS_CTL_DATA_ONSTACK) != 0)
    734 		goto bad;
    735 	{
    736 		u_int8_t *extension = &inqbuf.flags1;
    737 		int len = inqbuf.additional_length;
    738 		while (len < 3)
    739 			extension[len++] = '\0';
    740 		while (len < 3 + 28)
    741 			extension[len++] = ' ';
    742 		while (len < 3 + 28 + 20)
    743 			extension[len++] = '\0';
    744 		while (len < 3 + 28 + 20 + 1)
    745 			extension[len++] = '\0';
    746 		while (len < 3 + 28 + 20 + 1 + 1)
    747 			extension[len++] = '\0';
    748 		while (len < 3 + 28 + 20 + 1 + 1 + (8*2))
    749 			extension[len++] = ' ';
    750 	}
    751 
    752 	periph->periph_type = inqbuf.device & SID_TYPE;
    753 	if (inqbuf.dev_qual2 & SID_REMOVABLE)
    754 		periph->periph_flags |= PERIPH_REMOVABLE;
    755 	periph->periph_version = inqbuf.version & SID_ANSII;
    756 
    757 	/*
    758 	 * Any device qualifier that has the top bit set (qualifier&4 != 0)
    759 	 * is vendor specific and won't match in this switch.
    760 	 * All we do here is throw out bad/negative responses.
    761 	 */
    762 	checkdtype = 0;
    763 	switch (inqbuf.device & SID_QUAL) {
    764 	case SID_QUAL_LU_PRESENT:
    765 	case SID_QUAL_LU_NOTPRESENT:
    766 		checkdtype = 1;
    767 		break;
    768 
    769 	case SID_QUAL_reserved:
    770 	case SID_QUAL_LU_NOT_SUPP:
    771 		goto bad;
    772 
    773 	default:
    774 		break;
    775 	}
    776 
    777 	/* Let the adapter driver handle the device separatley if it wants. */
    778 	if (chan->chan_adapter->adapt_accesschk != NULL &&
    779 	    (*chan->chan_adapter->adapt_accesschk)(periph, &sa.sa_inqbuf))
    780 		goto bad;
    781 
    782 	if (checkdtype) {
    783 		switch (periph->periph_type) {
    784 		case T_DIRECT:
    785 		case T_SEQUENTIAL:
    786 		case T_PRINTER:
    787 		case T_PROCESSOR:
    788 		case T_WORM:
    789 		case T_CDROM:
    790 		case T_SCANNER:
    791 		case T_OPTICAL:
    792 		case T_CHANGER:
    793 		case T_COMM:
    794 		case T_IT8_1:
    795 		case T_IT8_2:
    796 		case T_STORARRAY:
    797 		case T_ENCLOSURE:
    798 		case T_SIMPLE_DIRECT:
    799 		case T_OPTIC_CARD_RW:
    800 		case T_OBJECT_STORED:
    801 		default:
    802 			break;
    803 		case T_NODEVICE:
    804 			goto bad;
    805 		}
    806 	}
    807 
    808 	sa.sa_periph = periph;
    809 	sa.sa_inqbuf.type = inqbuf.device;
    810 	sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
    811 	    T_REMOV : T_FIXED;
    812 	sa.sa_inqbuf.vendor = inqbuf.vendor;
    813 	sa.sa_inqbuf.product = inqbuf.product;
    814 	sa.sa_inqbuf.revision = inqbuf.revision;
    815 	sa.scsipi_info.scsi_version = inqbuf.version;
    816 	sa.sa_inqptr = &inqbuf;
    817 
    818 	finger = (struct scsi_quirk_inquiry_pattern *)scsipi_inqmatch(
    819 	    &sa.sa_inqbuf, (caddr_t)scsi_quirk_patterns,
    820 	    sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
    821 	    sizeof(scsi_quirk_patterns[0]), &priority);
    822 
    823 	if (finger != NULL)
    824 		quirks = finger->quirks;
    825 	else
    826 		quirks = 0;
    827 
    828 	/*
    829 	 * Determine the operating mode capabilities of the device.
    830 	 */
    831 	if (periph->periph_version >= 2) {
    832 		if ((inqbuf.flags3 & SID_CmdQue) != 0 &&
    833 		    (quirks & PQUIRK_NOTAG) == 0)
    834 			periph->periph_cap |= PERIPH_CAP_TQING;
    835 		if ((inqbuf.flags3 & SID_Linked) != 0)
    836 			periph->periph_cap |= PERIPH_CAP_LINKCMDS;
    837 		if ((inqbuf.flags3 & SID_Sync) != 0 &&
    838 		    (quirks & PQUIRK_NOSYNC) == 0)
    839 			periph->periph_cap |= PERIPH_CAP_SYNC;
    840 		if ((inqbuf.flags3 & SID_WBus16) != 0 &&
    841 		    (quirks & PQUIRK_NOWIDE) == 0)
    842 			periph->periph_cap |= PERIPH_CAP_WIDE16;
    843 		if ((inqbuf.flags3 & SID_WBus32) != 0 &&
    844 		    (quirks & PQUIRK_NOWIDE) == 0)
    845 			periph->periph_cap |= PERIPH_CAP_WIDE32;
    846 		if ((inqbuf.flags3 & SID_SftRe) != 0)
    847 			periph->periph_cap |= PERIPH_CAP_SFTRESET;
    848 		if ((inqbuf.flags3 & SID_RelAdr) != 0)
    849 			periph->periph_cap |= PERIPH_CAP_RELADR;
    850 		if (periph->periph_version >= 3) { /* SPC-2 */
    851 			/*
    852 			 * Report ST clocking though CAP_WIDExx/CAP_SYNC.
    853 			 * If the device only supports DT, clear these
    854 			 * flags (DT implies SYNC and WIDE)
    855 			 */
    856 			switch (inqbuf.flags4 & SID_Clocking) {
    857 			case SID_CLOCKING_DT_ONLY:
    858 				periph->periph_cap &=
    859 				    ~(PERIPH_CAP_SYNC |
    860 				      PERIPH_CAP_WIDE16 |
    861 				      PERIPH_CAP_WIDE32);
    862 				/* FALLTHOUGH */
    863 			case SID_CLOCKING_SD_DT:
    864 				periph->periph_cap |= PERIPH_CAP_DT;
    865 				break;
    866 			default: /* ST only or invalid */
    867 				/* nothing to do */
    868 				break;
    869 			}
    870 			if (inqbuf.flags4 & SID_IUS)
    871 				periph->periph_cap |= PERIPH_CAP_IUS;
    872 			if (inqbuf.flags4 & SID_QAS)
    873 				periph->periph_cap |= PERIPH_CAP_QAS;
    874 		}
    875 	}
    876 	if (quirks & PQUIRK_CAP_SYNC)
    877 		periph->periph_cap |= PERIPH_CAP_SYNC;
    878 	if (quirks & PQUIRK_CAP_WIDE16)
    879 		periph->periph_cap |= PERIPH_CAP_WIDE16;
    880 
    881 	/*
    882 	 * Now apply any quirks from the table.
    883 	 */
    884 	periph->periph_quirks |= quirks;
    885 	if (periph->periph_version == 0 &&
    886 	    (periph->periph_quirks & PQUIRK_FORCELUNS) == 0)
    887 		periph->periph_quirks |= PQUIRK_NOLUNS;
    888 
    889 	if (periph->periph_quirks & PQUIRK_CDROM) {
    890 		periph->periph_quirks ^= PQUIRK_CDROM;
    891 		inqbuf.dev_qual2 |= SID_REMOVABLE;
    892 		sa.sa_inqbuf.type = inqbuf.device =
    893 		    ((inqbuf.device & ~SID_REMOVABLE) | T_CDROM);
    894 		sa.sa_inqbuf.removable = T_REMOV;
    895 	}
    896 
    897 	if ((periph->periph_quirks & PQUIRK_NOLUNS) == 0)
    898 		docontinue = 1;
    899 
    900 	if ((cf = config_search(scsibussubmatch, &sc->sc_dev, &sa)) != NULL) {
    901 		scsipi_insert_periph(chan, periph);
    902 		/*
    903 		 * XXX Can't assign periph_dev here, because we'll
    904 		 * XXX need it before config_attach() returns.  Must
    905 		 * XXX assign it in periph driver.
    906 		 */
    907 		(void) config_attach(&sc->sc_dev, cf, &sa, scsibusprint);
    908 	} else {
    909 		scsibusprint(&sa, sc->sc_dev.dv_xname);
    910 		printf(" not configured\n");
    911 		goto bad;
    912 	}
    913 
    914 	return (docontinue);
    915 
    916 bad:
    917 	free(periph, M_DEVBUF);
    918 	return (docontinue);
    919 }
    920 
    921 /****** Entry points for user control of the SCSI bus. ******/
    922 
    923 int
    924 scsibusopen(dev, flag, fmt, p)
    925 	dev_t dev;
    926 	int flag, fmt;
    927 	struct proc *p;
    928 {
    929 	struct scsibus_softc *sc;
    930 	int error, unit = minor(dev);
    931 
    932 	if (unit >= scsibus_cd.cd_ndevs ||
    933 	    (sc = scsibus_cd.cd_devs[unit]) == NULL)
    934 		return (ENXIO);
    935 
    936 	if (sc->sc_flags & SCSIBUSF_OPEN)
    937 		return (EBUSY);
    938 
    939 	if ((error = scsipi_adapter_addref(sc->sc_channel->chan_adapter)) != 0)
    940 		return (error);
    941 
    942 	sc->sc_flags |= SCSIBUSF_OPEN;
    943 
    944 	return (0);
    945 }
    946 
    947 int
    948 scsibusclose(dev, flag, fmt, p)
    949 	dev_t dev;
    950 	int flag, fmt;
    951 	struct proc *p;
    952 {
    953 	struct scsibus_softc *sc = scsibus_cd.cd_devs[minor(dev)];
    954 
    955 	scsipi_adapter_delref(sc->sc_channel->chan_adapter);
    956 
    957 	sc->sc_flags &= ~SCSIBUSF_OPEN;
    958 
    959 	return (0);
    960 }
    961 
    962 int
    963 scsibusioctl(dev, cmd, addr, flag, p)
    964 	dev_t dev;
    965 	u_long cmd;
    966 	caddr_t addr;
    967 	int flag;
    968 	struct proc *p;
    969 {
    970 	struct scsibus_softc *sc = scsibus_cd.cd_devs[minor(dev)];
    971 	struct scsipi_channel *chan = sc->sc_channel;
    972 	int error;
    973 
    974 	/*
    975 	 * Enforce write permission for ioctls that change the
    976 	 * state of the bus.  Host adapter specific ioctls must
    977 	 * be checked by the adapter driver.
    978 	 */
    979 	switch (cmd) {
    980 	case SCBUSIOSCAN:
    981 	case SCBUSIODETACH:
    982 	case SCBUSIORESET:
    983 		if ((flag & FWRITE) == 0)
    984 			return (EBADF);
    985 	}
    986 
    987 	switch (cmd) {
    988 	case SCBUSIOSCAN:
    989 	    {
    990 		struct scbusioscan_args *a =
    991 		    (struct scbusioscan_args *)addr;
    992 
    993 		error = scsi_probe_bus(sc, a->sa_target, a->sa_lun);
    994 		break;
    995 	    }
    996 
    997 	case SCBUSIODETACH:
    998 	    {
    999 		struct scbusiodetach_args *a =
   1000 		    (struct scbusiodetach_args *)addr;
   1001 
   1002 		error = scsipi_target_detach(chan, a->sa_target, a->sa_lun, 0);
   1003 		break;
   1004 	    }
   1005 
   1006 
   1007 	case SCBUSIORESET:
   1008 		/* FALLTHROUGH */
   1009 	default:
   1010 		if (chan->chan_adapter->adapt_ioctl == NULL)
   1011 			error = ENOTTY;
   1012 		else
   1013 			error = (*chan->chan_adapter->adapt_ioctl)(chan,
   1014 			    cmd, addr, flag, p);
   1015 		break;
   1016 	}
   1017 
   1018 	return (error);
   1019 }
   1020