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scsiconf.c revision 1.250
      1 /*	$NetBSD: scsiconf.c,v 1.250 2008/07/16 18:50:58 drochner 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 (at) 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 (at) tfs.com) Sept 1992
     48  */
     49 
     50 #include <sys/cdefs.h>
     51 __KERNEL_RCSID(0, "$NetBSD: scsiconf.c,v 1.250 2008/07/16 18:50:58 drochner 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(struct device *, struct cfdata *, void *);
     91 static void	scsibusattach(struct device *, struct device *, void *);
     92 static int	scsibusactivate(struct device *, enum devact);
     93 static int	scsibusdetach(struct device *, int flags);
     94 static int	scsibusrescan(struct device *, const char *, const int *);
     95 static void	scsidevdetached(struct device *, struct device *);
     96 
     97 CFATTACH_DECL2_NEW(scsibus, sizeof(struct scsibus_softc),
     98     scsibusmatch, scsibusattach, scsibusdetach, scsibusactivate,
     99     scsibusrescan, scsidevdetached);
    100 
    101 extern struct cfdriver scsibus_cd;
    102 
    103 static dev_type_open(scsibusopen);
    104 static dev_type_close(scsibusclose);
    105 static dev_type_ioctl(scsibusioctl);
    106 
    107 const struct cdevsw scsibus_cdevsw = {
    108 	scsibusopen, scsibusclose, noread, nowrite, scsibusioctl,
    109 	nostop, notty, nopoll, nommap, nokqfilter, D_OTHER,
    110 };
    111 
    112 static int	scsibusprint(void *, const char *);
    113 static void	scsibus_config(struct scsipi_channel *, void *);
    114 
    115 const struct scsipi_bustype scsi_bustype = {
    116 	SCSIPI_BUSTYPE_SCSI,
    117 	scsi_scsipi_cmd,
    118 	scsipi_interpret_sense,
    119 	scsi_print_addr,
    120 	scsi_kill_pending,
    121 };
    122 
    123 int
    124 scsiprint(void *aux, const char *pnp)
    125 {
    126 	struct scsipi_channel *chan = aux;
    127 	struct scsipi_adapter *adapt = chan->chan_adapter;
    128 
    129 	/* only "scsibus"es can attach to "scsi"s; easy. */
    130 	if (pnp)
    131 		aprint_normal("scsibus at %s", pnp);
    132 
    133 	/* don't print channel if the controller says there can be only one. */
    134 	if (adapt->adapt_nchannels != 1)
    135 		aprint_normal(" channel %d", chan->chan_channel);
    136 
    137 	return (UNCONF);
    138 }
    139 
    140 static int
    141 scsibusmatch(struct device *parent, struct cfdata *cf, void *aux)
    142 {
    143 	struct scsipi_channel *chan = aux;
    144 
    145 	if (chan->chan_bustype->bustype_type != SCSIPI_BUSTYPE_SCSI)
    146 		return 0;
    147 
    148 	if (cf->cf_loc[SCSICF_CHANNEL] != chan->chan_channel &&
    149 	    cf->cf_loc[SCSICF_CHANNEL] != SCSICF_CHANNEL_DEFAULT)
    150 		return (0);
    151 
    152 	return (1);
    153 }
    154 
    155 static void
    156 scsibusattach(struct device *parent, struct device *self, void *aux)
    157 {
    158 	struct scsibus_softc *sc = device_private(self);
    159 	struct scsipi_channel *chan = aux;
    160 	struct scsi_initq *scsi_initq;
    161 
    162 	if (!pmf_device_register(self, NULL, NULL))
    163 		aprint_error_dev(self, "couldn't establish power handler\n");
    164 
    165 	sc->sc_dev = self;
    166 	sc->sc_channel = chan;
    167 	chan->chan_name = device_xname(sc->sc_dev);
    168 
    169 	aprint_naive(": SCSI bus\n");
    170 	aprint_normal(": %d target%s, %d lun%s per target\n",
    171 	    chan->chan_ntargets,
    172 	    chan->chan_ntargets == 1 ? "" : "s",
    173 	    chan->chan_nluns,
    174 	    chan->chan_nluns == 1 ? "" : "s");
    175 
    176 	if (scsipi_adapter_addref(chan->chan_adapter))
    177 		return;
    178 
    179 	/* Initialize the channel structure first */
    180 	chan->chan_init_cb = scsibus_config;
    181 	chan->chan_init_cb_arg = sc;
    182 
    183 	scsi_initq = malloc(sizeof(struct scsi_initq), M_DEVBUF, M_WAITOK);
    184 	scsi_initq->sc_channel = chan;
    185 	TAILQ_INSERT_TAIL(&scsi_initq_head, scsi_initq, scsi_initq);
    186         config_pending_incr();
    187 	if (scsipi_channel_init(chan)) {
    188 		aprint_error_dev(sc->sc_dev, "failed to init channel\n");
    189 		return;
    190 	}
    191 }
    192 
    193 static void
    194 scsibus_config(struct scsipi_channel *chan, void *arg)
    195 {
    196 	struct scsibus_softc *sc = arg;
    197 	struct scsi_initq *scsi_initq;
    198 
    199 #ifndef SCSI_DELAY
    200 #define SCSI_DELAY 2
    201 #endif
    202 	if ((chan->chan_flags & SCSIPI_CHAN_NOSETTLE) == 0 &&
    203 	    SCSI_DELAY > 0) {
    204 		aprint_normal_dev(sc->sc_dev,
    205 		    "waiting %d seconds for devices to settle...\n",
    206 		    SCSI_DELAY);
    207 		/* ...an identifier we know no one will use... */
    208 		(void) tsleep(scsibus_config, PRIBIO,
    209 		    "scsidly", SCSI_DELAY * hz);
    210 	}
    211 
    212 	/* Make sure the devices probe in scsibus order to avoid jitter. */
    213 	simple_lock(&scsibus_interlock);
    214 	for (;;) {
    215 		scsi_initq = TAILQ_FIRST(&scsi_initq_head);
    216 		if (scsi_initq->sc_channel == chan)
    217 			break;
    218 		ltsleep(&scsi_initq_head, PRIBIO, "scsi_initq", 0,
    219 		    &scsibus_interlock);
    220 	}
    221 
    222 	simple_unlock(&scsibus_interlock);
    223 
    224 	scsi_probe_bus(sc, -1, -1);
    225 
    226 	simple_lock(&scsibus_interlock);
    227 	TAILQ_REMOVE(&scsi_initq_head, scsi_initq, scsi_initq);
    228 	simple_unlock(&scsibus_interlock);
    229 
    230 	free(scsi_initq, M_DEVBUF);
    231 	wakeup(&scsi_initq_head);
    232 
    233 	scsipi_adapter_delref(chan->chan_adapter);
    234 
    235 	config_pending_decr();
    236 }
    237 
    238 static int
    239 scsibusactivate(struct device *self, enum devact act)
    240 {
    241 	struct scsibus_softc *sc = device_private(self);
    242 	struct scsipi_channel *chan = sc->sc_channel;
    243 	struct scsipi_periph *periph;
    244 	int target, lun, error = 0, s;
    245 
    246 	s = splbio();
    247 	switch (act) {
    248 	case DVACT_ACTIVATE:
    249 		error = EOPNOTSUPP;
    250 		break;
    251 
    252 	case DVACT_DEACTIVATE:
    253 		for (target = 0; target < chan->chan_ntargets;
    254 		     target++) {
    255 			if (target == chan->chan_id)
    256 				continue;
    257 			for (lun = 0; lun < chan->chan_nluns; lun++) {
    258 				periph = scsipi_lookup_periph(chan,
    259 				    target, lun);
    260 				if (periph == NULL)
    261 					continue;
    262 				error = config_deactivate(periph->periph_dev);
    263 				if (error)
    264 					goto out;
    265 			}
    266 		}
    267 		break;
    268 	}
    269  out:
    270 	splx(s);
    271 	return (error);
    272 }
    273 
    274 static int
    275 scsibusdetach(struct device *self, int flags)
    276 {
    277 	struct scsibus_softc *sc = device_private(self);
    278 	struct scsipi_channel *chan = sc->sc_channel;
    279 	struct scsipi_periph *periph;
    280 	int ctarget, clun;
    281 	struct scsipi_xfer *xs;
    282 	int error;
    283 
    284 	pmf_device_deregister(self);
    285 
    286 	/*
    287 	 * Process outstanding commands (which will never complete as the
    288 	 * controller is gone).
    289 	 */
    290 	for (ctarget = 0; ctarget < chan->chan_ntargets; ctarget++) {
    291 		if (ctarget == chan->chan_id)
    292 			continue;
    293 		for (clun = 0; clun < chan->chan_nluns; clun++) {
    294 			periph = scsipi_lookup_periph(chan, ctarget, clun);
    295 			if (periph == NULL)
    296 				continue;
    297 			TAILQ_FOREACH(xs, &periph->periph_xferq, device_q) {
    298 				callout_stop(&xs->xs_callout);
    299 				xs->error = XS_DRIVER_STUFFUP;
    300 				scsipi_done(xs);
    301 			}
    302 		}
    303 	}
    304 
    305 	/*
    306 	 * Detach all of the periphs.
    307 	 */
    308 	error = scsipi_target_detach(chan, -1, -1, flags);
    309 
    310 	/*
    311 	 * Now shut down the channel.
    312 	 * XXX only if no errors ?
    313 	 */
    314 	scsipi_channel_shutdown(chan);
    315 	return (error);
    316 }
    317 
    318 /*
    319  * Probe the requested scsi bus. It must be already set up.
    320  * target and lun optionally narrow the search if not -1
    321  */
    322 int
    323 scsi_probe_bus(struct scsibus_softc *sc, int target, int lun)
    324 {
    325 	struct scsipi_channel *chan = sc->sc_channel;
    326 	int maxtarget, mintarget, maxlun, minlun;
    327 	int error;
    328 
    329 	if (target == -1) {
    330 		maxtarget = chan->chan_ntargets - 1;
    331 		mintarget = 0;
    332 	} else {
    333 		if (target < 0 || target >= chan->chan_ntargets)
    334 			return (EINVAL);
    335 		maxtarget = mintarget = target;
    336 	}
    337 
    338 	if (lun == -1) {
    339 		maxlun = chan->chan_nluns - 1;
    340 		minlun = 0;
    341 	} else {
    342 		if (lun < 0 || lun >= chan->chan_nluns)
    343 			return (EINVAL);
    344 		maxlun = minlun = lun;
    345 	}
    346 
    347 	/*
    348 	 * Some HBAs provide an abstracted view of the bus; give them an
    349 	 * oppertunity to re-scan it before we do.
    350 	 */
    351 	if (chan->chan_adapter->adapt_ioctl != NULL)
    352 		(*chan->chan_adapter->adapt_ioctl)(chan, SCBUSIOLLSCAN, NULL,
    353 		    0, curproc);
    354 
    355 	if ((error = scsipi_adapter_addref(chan->chan_adapter)) != 0)
    356 		return (error);
    357 	for (target = mintarget; target <= maxtarget; target++) {
    358 		if (target == chan->chan_id)
    359 			continue;
    360 		for (lun = minlun; lun <= maxlun; lun++) {
    361 			/*
    362 			 * See if there's a device present, and configure it.
    363 			 */
    364 			if (scsi_probe_device(sc, target, lun) == 0)
    365 				break;
    366 			/* otherwise something says we should look further */
    367 		}
    368 
    369 		/*
    370 		 * Now that we've discovered all of the LUNs on this
    371 		 * I_T Nexus, update the xfer mode for all of them
    372 		 * that we know about.
    373 		 */
    374 		scsipi_set_xfer_mode(chan, target, 1);
    375 	}
    376 	scsipi_adapter_delref(chan->chan_adapter);
    377 	return (0);
    378 }
    379 
    380 static int
    381 scsibusrescan(struct device *sc, const char *ifattr,
    382     const int *locators)
    383 {
    384 
    385 	KASSERT(ifattr && !strcmp(ifattr, "scsibus"));
    386 	KASSERT(locators);
    387 
    388 	return (scsi_probe_bus(device_private(sc),
    389 		locators[SCSIBUSCF_TARGET], locators[SCSIBUSCF_LUN]));
    390 }
    391 
    392 static void
    393 scsidevdetached(struct device *sc, struct device *dev)
    394 {
    395 	struct scsibus_softc *ssc = device_private(sc);
    396 	struct scsipi_channel *chan = ssc->sc_channel;
    397 	struct scsipi_periph *periph;
    398 	int target, lun;
    399 
    400 	target = device_locator(dev, SCSIBUSCF_TARGET);
    401 	lun = device_locator(dev, SCSIBUSCF_LUN);
    402 
    403 	periph = scsipi_lookup_periph(chan, target, lun);
    404 	KASSERT(periph->periph_dev == dev);
    405 
    406 	scsipi_remove_periph(chan, periph);
    407 	free(periph, M_DEVBUF);
    408 }
    409 
    410 /*
    411  * Print out autoconfiguration information for a subdevice.
    412  *
    413  * This is a slight abuse of 'standard' autoconfiguration semantics,
    414  * because 'print' functions don't normally print the colon and
    415  * device information.  However, in this case that's better than
    416  * either printing redundant information before the attach message,
    417  * or having the device driver call a special function to print out
    418  * the standard device information.
    419  */
    420 static int
    421 scsibusprint(void *aux, const char *pnp)
    422 {
    423 	struct scsipibus_attach_args *sa = aux;
    424 	struct scsipi_inquiry_pattern *inqbuf;
    425 	u_int8_t type;
    426 	const char *dtype;
    427 	char vendor[33], product[65], revision[17];
    428 	int target, lun;
    429 
    430 	if (pnp != NULL)
    431 		aprint_normal("%s", pnp);
    432 
    433 	inqbuf = &sa->sa_inqbuf;
    434 
    435 	target = sa->sa_periph->periph_target;
    436 	lun = sa->sa_periph->periph_lun;
    437 	type = inqbuf->type & SID_TYPE;
    438 
    439 	dtype = scsipi_dtype(type);
    440 
    441 	scsipi_strvis(vendor, 33, inqbuf->vendor, 8);
    442 	scsipi_strvis(product, 65, inqbuf->product, 16);
    443 	scsipi_strvis(revision, 17, inqbuf->revision, 4);
    444 
    445 	aprint_normal(" target %d lun %d: <%s, %s, %s> %s %s",
    446 	    target, lun, vendor, product, revision, dtype,
    447 	    inqbuf->removable ? "removable" : "fixed");
    448 
    449 	return (UNCONF);
    450 }
    451 
    452 static const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
    453 	{{T_CDROM, T_REMOV,
    454 	 "CHINON  ", "CD-ROM CDS-431  ", ""},     PQUIRK_NOLUNS},
    455 	{{T_CDROM, T_REMOV,
    456 	 "CHINON  ", "CD-ROM CDS-435  ", ""},     PQUIRK_NOLUNS},
    457 	{{T_CDROM, T_REMOV,
    458 	 "Chinon  ", "CD-ROM CDS-525  ", ""},     PQUIRK_NOLUNS},
    459 	{{T_CDROM, T_REMOV,
    460 	 "CHINON  ", "CD-ROM CDS-535  ", ""},     PQUIRK_NOLUNS},
    461 	{{T_CDROM, T_REMOV,
    462 	 "DEC     ", "RRD42   (C) DEC ", ""},     PQUIRK_NOLUNS},
    463 	{{T_CDROM, T_REMOV,
    464 	 "DENON   ", "DRD-25X         ", "V"},    PQUIRK_NOLUNS},
    465 	{{T_CDROM, T_REMOV,
    466 	 "GENERIC ", "CRD-BP2         ", ""},     PQUIRK_NOLUNS},
    467 	{{T_CDROM, T_REMOV,
    468 	 "HP      ", "C4324/C4325     ", ""},     PQUIRK_NOLUNS},
    469 	{{T_CDROM, T_REMOV,
    470 	 "IMS     ", "CDD521/10       ", "2.06"}, PQUIRK_NOLUNS},
    471 	{{T_CDROM, T_REMOV,
    472 	 "MATSHITA", "CD-ROM CR-5XX   ", "1.0b"}, PQUIRK_NOLUNS},
    473 	{{T_CDROM, T_REMOV,
    474 	 "MEDAVIS ", "RENO CD-ROMX2A  ", ""},     PQUIRK_NOLUNS},
    475 	{{T_CDROM, T_REMOV,
    476 	 "MEDIAVIS", "CDR-H93MV       ", "1.3"},  PQUIRK_NOLUNS},
    477 	{{T_CDROM, T_REMOV,
    478 	 "NEC     ", "CD-ROM DRIVE:502", ""},     PQUIRK_NOLUNS},
    479 	{{T_CDROM, T_REMOV,
    480 	 "NEC     ", "CD-ROM DRIVE:55 ", ""},     PQUIRK_NOLUNS},
    481 	{{T_CDROM, T_REMOV,
    482 	 "NEC     ", "CD-ROM DRIVE:83 ", ""},     PQUIRK_NOLUNS},
    483 	{{T_CDROM, T_REMOV,
    484 	 "NEC     ", "CD-ROM DRIVE:84 ", ""},     PQUIRK_NOLUNS},
    485 	{{T_CDROM, T_REMOV,
    486 	 "NEC     ", "CD-ROM DRIVE:841", ""},     PQUIRK_NOLUNS},
    487         {{T_CDROM, T_REMOV,
    488 	 "OLYMPUS ", "CDS620E         ", "1.1d"},
    489 			       PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOCAPACITY},
    490 	{{T_CDROM, T_REMOV,
    491 	 "PIONEER ", "CD-ROM DR-124X  ", "1.01"}, PQUIRK_NOLUNS},
    492         {{T_CDROM, T_REMOV,
    493          "PLEXTOR ", "CD-ROM PX-4XCS  ", "1.01"},
    494                                PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    495 	{{T_CDROM, T_REMOV,
    496 	 "SONY    ", "CD-ROM CDU-541  ", ""},     PQUIRK_NOLUNS},
    497 	{{T_CDROM, T_REMOV,
    498 	 "SONY    ", "CD-ROM CDU-55S  ", ""},     PQUIRK_NOLUNS},
    499 	{{T_CDROM, T_REMOV,
    500 	 "SONY    ", "CD-ROM CDU-561  ", ""},     PQUIRK_NOLUNS},
    501 	{{T_CDROM, T_REMOV,
    502 	 "SONY    ", "CD-ROM CDU-76S", ""},
    503 				PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    504 	{{T_CDROM, T_REMOV,
    505 	 "SONY    ", "CD-ROM CDU-8003A", ""},     PQUIRK_NOLUNS},
    506 	{{T_CDROM, T_REMOV,
    507 	 "SONY    ", "CD-ROM CDU-8012 ", ""},     PQUIRK_NOLUNS},
    508 	{{T_CDROM, T_REMOV,
    509 	 "TEAC    ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    510 	{{T_CDROM, T_REMOV,
    511 	 "TEAC    ", "CD-ROM CD-56S   ", "1.0B"}, PQUIRK_NOLUNS},
    512 	{{T_CDROM, T_REMOV,
    513 	 "TEXEL   ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    514 	{{T_CDROM, T_REMOV,
    515 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.09"}, PQUIRK_NOLUNS},
    516 	{{T_CDROM, T_REMOV,
    517 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, PQUIRK_NOLUNS},
    518 	{{T_CDROM, T_REMOV,
    519 	 "TOSHIBA ", "XM-4101TASUNSLCD", ""}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    520 	/* "IBM CDRM00201     !F" 0724 is an IBM OEM Toshiba XM-4101BME */
    521 	{{T_CDROM, T_REMOV,
    522 	 "IBM     ", "CDRM00201     !F", "0724"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    523 	{{T_CDROM, T_REMOV,
    524 	 "ShinaKen", "CD-ROM DM-3x1S",   "1.04"}, PQUIRK_NOLUNS},
    525 	{{T_CDROM, T_REMOV,
    526 	 "JVC     ", "R2626",            ""},     PQUIRK_NOLUNS},
    527 	{{T_CDROM, T_REMOV,
    528 	 "YAMAHA", "CRW8424S",           ""},     PQUIRK_NOLUNS},
    529 	{{T_CDROM, T_REMOV,
    530 	 "NEC     ", "CD-ROM DRIVE:222", ""},	  PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    531 
    532 	{{T_DIRECT, T_FIXED,
    533 	 "MICROP  ", "1588-15MBSUN0669", ""},     PQUIRK_AUTOSAVE},
    534 	{{T_DIRECT, T_FIXED,
    535 	 "MICROP  ", "2217-15MQ1091501", ""},     PQUIRK_NOSYNCCACHE},
    536 	{{T_OPTICAL, T_REMOV,
    537 	 "EPSON   ", "OMD-5010        ", "3.08"}, PQUIRK_NOLUNS},
    538 	{{T_DIRECT, T_FIXED,
    539 	 "ADAPTEC ", "AEC-4412BD",       "1.2A"}, PQUIRK_NOMODESENSE},
    540 	{{T_DIRECT, T_FIXED,
    541 	 "ADAPTEC ", "ACB-4000",         ""},     PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE|PQUIRK_NOMODESENSE},
    542 	{{T_DIRECT, T_FIXED,
    543 	 "DEC     ", "RZ55     (C) DEC", ""},     PQUIRK_AUTOSAVE},
    544 	{{T_DIRECT, T_FIXED,
    545 	 "EMULEX  ", "MD21/S2     ESDI", "A00"},
    546 				PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE},
    547 	{{T_DIRECT, T_FIXED,
    548 	 "MICROP",  "1548-15MZ1077801",  "HZ2P"}, PQUIRK_NOTAG},
    549 	{{T_DIRECT, T_FIXED,
    550 	 "HP      ", "C372",             ""},     PQUIRK_NOTAG},
    551 	{{T_DIRECT, T_FIXED,
    552 	 "IBMRAID ", "0662S",		 ""},     PQUIRK_AUTOSAVE},
    553 	{{T_DIRECT, T_FIXED,
    554 	 "IBM     ", "0663H",		 ""},     PQUIRK_AUTOSAVE},
    555 	{{T_DIRECT, T_FIXED,
    556 	 "IBM",	     "0664",		 ""},     PQUIRK_AUTOSAVE},
    557 	{{T_DIRECT, T_FIXED,
    558 	/* improperly report DT-only sync mode */
    559 	 "IBM     ", "DXHS36D",		 ""},
    560 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    561 	{{T_DIRECT, T_FIXED,
    562 	 "IBM     ", "DXHS18Y",		 ""},
    563 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    564 	{{T_DIRECT, T_FIXED,
    565 	 "IBM     ", "H3171-S2",	 ""},
    566 				PQUIRK_NOLUNS|PQUIRK_AUTOSAVE},
    567 	{{T_DIRECT, T_FIXED,
    568 	 "IBM     ", "KZ-C",		 ""},	  PQUIRK_AUTOSAVE},
    569 	/* Broken IBM disk */
    570 	{{T_DIRECT, T_FIXED,
    571 	 ""	   , "DFRSS2F",		 ""},	  PQUIRK_AUTOSAVE},
    572 	{{T_DIRECT, T_FIXED,
    573 	 "Initio  ", "",		 ""},	  PQUIRK_NOBIGMODESENSE},
    574 	{{T_DIRECT, T_REMOV,
    575 	 "MPL     ", "MC-DISK-        ", ""},     PQUIRK_NOLUNS},
    576 	{{T_DIRECT, T_FIXED,
    577 	 "MAXTOR  ", "XT-3280         ", ""},     PQUIRK_NOLUNS},
    578 	{{T_DIRECT, T_FIXED,
    579 	 "MAXTOR  ", "XT-4380S        ", ""},     PQUIRK_NOLUNS},
    580 	{{T_DIRECT, T_FIXED,
    581 	 "MAXTOR  ", "MXT-1240S       ", ""},     PQUIRK_NOLUNS},
    582 	{{T_DIRECT, T_FIXED,
    583 	 "MAXTOR  ", "XT-4170S        ", ""},     PQUIRK_NOLUNS},
    584 	{{T_DIRECT, T_FIXED,
    585 	 "MAXTOR  ", "XT-8760S",         ""},     PQUIRK_NOLUNS},
    586 	{{T_DIRECT, T_FIXED,
    587 	 "MAXTOR  ", "LXT-213S        ", ""},     PQUIRK_NOLUNS},
    588 	{{T_DIRECT, T_FIXED,
    589 	 "MAXTOR  ", "LXT-213S SUN0207", ""},     PQUIRK_NOLUNS},
    590 	{{T_DIRECT, T_FIXED,
    591 	 "MAXTOR  ", "LXT-200S        ", ""},     PQUIRK_NOLUNS},
    592 	{{T_DIRECT, T_FIXED,
    593 	 "MEGADRV ", "EV1000",           ""},     PQUIRK_NOMODESENSE},
    594 	{{T_DIRECT, T_FIXED,
    595 	 "MICROP", "1991-27MZ",          ""},     PQUIRK_NOTAG},
    596 	{{T_DIRECT, T_FIXED,
    597 	 "MST     ", "SnapLink        ", ""},     PQUIRK_NOLUNS},
    598 	{{T_DIRECT, T_FIXED,
    599 	 "NEC     ", "D3847           ", "0307"}, PQUIRK_NOLUNS},
    600 	{{T_DIRECT, T_FIXED,
    601 	 "QUANTUM ", "ELS85S          ", ""},     PQUIRK_AUTOSAVE},
    602 	{{T_DIRECT, T_FIXED,
    603 	 "QUANTUM ", "LPS525S         ", ""},     PQUIRK_NOLUNS},
    604 	{{T_DIRECT, T_FIXED,
    605 	 "QUANTUM ", "P105S 910-10-94x", ""},     PQUIRK_NOLUNS},
    606 	{{T_DIRECT, T_FIXED,
    607 	 "QUANTUM ", "PD1225S         ", ""},     PQUIRK_NOLUNS},
    608 	{{T_DIRECT, T_FIXED,
    609 	 "QUANTUM ", "PD210S   SUN0207", ""},     PQUIRK_NOLUNS},
    610 	{{T_DIRECT, T_FIXED,
    611 	 "QUANTUM ", "ATLAS IV 9 WLS", "0A0A"},   PQUIRK_CAP_NODT},
    612 	{{T_DIRECT, T_FIXED,
    613 	 "RODIME  ", "RO3000S         ", ""},     PQUIRK_NOLUNS},
    614 	{{T_DIRECT, T_FIXED,
    615 	 "SEAGATE ", "ST125N          ", ""},     PQUIRK_NOLUNS},
    616 	{{T_DIRECT, T_FIXED,
    617 	 "SEAGATE ", "ST157N          ", ""},     PQUIRK_NOLUNS},
    618 	{{T_DIRECT, T_FIXED,
    619 	 "SEAGATE ", "ST296           ", ""},     PQUIRK_NOLUNS},
    620 	{{T_DIRECT, T_FIXED,
    621 	 "SEAGATE ", "ST296N          ", ""},     PQUIRK_NOLUNS},
    622 	{{T_DIRECT, T_FIXED,
    623 	 "SEAGATE ", "ST318404LC      ", ""},     PQUIRK_NOLUNS},
    624 	{{T_DIRECT, T_FIXED,
    625 	 "SEAGATE ", "ST15150N        ", ""},     PQUIRK_NOTAG},
    626 	{{T_DIRECT, T_FIXED,
    627 	 "SEAGATE ", "ST19171",          ""},     PQUIRK_NOMODESENSE},
    628 	{{T_DIRECT, T_FIXED,
    629 	 "SEAGATE ", "ST32430N",         ""},     PQUIRK_CAP_SYNC},
    630 	{{T_DIRECT, T_FIXED,
    631 	 "SEAGATE ", "ST34501FC       ", ""},     PQUIRK_NOMODESENSE},
    632 	{{T_DIRECT, T_FIXED,
    633 	 "SEAGATE ", "SX910800N",        ""},     PQUIRK_NOTAG},
    634 	{{T_DIRECT, T_FIXED,
    635 	 "TOSHIBA ", "MK538FB         ", "6027"}, PQUIRK_NOLUNS},
    636 	{{T_DIRECT, T_FIXED,
    637 	 "MICROP  ", "1924",          ""},     PQUIRK_CAP_SYNC},
    638 	{{T_DIRECT, T_FIXED,
    639 	 "FUJITSU ", "M2266",         ""},     PQUIRK_CAP_SYNC},
    640 	{{T_DIRECT, T_FIXED,
    641 	 "FUJITSU ", "M2624S-512      ", ""},     PQUIRK_CAP_SYNC},
    642 	{{T_DIRECT, T_FIXED,
    643 	 "SEAGATE ", "SX336704LC"   , ""}, PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
    644 
    645 	{{T_DIRECT, T_REMOV,
    646 	 "IOMEGA", "ZIP 100",		 "J.03"}, PQUIRK_NOLUNS},
    647 	{{T_DIRECT, T_REMOV,
    648 	 "INSITE", "I325VM",             ""},     PQUIRK_NOLUNS},
    649 
    650 	/* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
    651 	{{T_SEQUENTIAL, T_REMOV,
    652 	 "        ", "                ", "    "}, PQUIRK_NOLUNS},
    653 	{{T_SEQUENTIAL, T_REMOV,
    654 	 "EMULEX  ", "MT-02 QIC       ", ""},     PQUIRK_NOLUNS},
    655 	{{T_SEQUENTIAL, T_REMOV,
    656 	 "CALIPER ", "CP150           ", ""},     PQUIRK_NOLUNS},
    657 	{{T_SEQUENTIAL, T_REMOV,
    658 	 "EXABYTE ", "EXB-8200        ", ""},     PQUIRK_NOLUNS},
    659 	{{T_SEQUENTIAL, T_REMOV,
    660 	 "SONY    ", "GY-10C          ", ""},     PQUIRK_NOLUNS},
    661 	{{T_SEQUENTIAL, T_REMOV,
    662 	 "SONY    ", "SDT-2000        ", "2.09"}, PQUIRK_NOLUNS},
    663 	{{T_SEQUENTIAL, T_REMOV,
    664 	 "SONY    ", "SDT-5000        ", "3."},   PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    665 	{{T_SEQUENTIAL, T_REMOV,
    666 	 "SONY    ", "SDT-5200        ", "3."},   PQUIRK_NOLUNS},
    667 	{{T_SEQUENTIAL, T_REMOV,
    668 	 "TANDBERG", " TDC 3600       ", ""},     PQUIRK_NOLUNS},
    669 	/* Following entry reported as a Tandberg 3600; ref. PR1933 */
    670 	{{T_SEQUENTIAL, T_REMOV,
    671 	 "ARCHIVE ", "VIPER 150  21247", ""},     PQUIRK_NOLUNS},
    672 	/* Following entry for a Cipher ST150S; ref. PR4171 */
    673 	{{T_SEQUENTIAL, T_REMOV,
    674 	 "ARCHIVE ", "VIPER 1500 21247", "2.2G"}, PQUIRK_NOLUNS},
    675 	{{T_SEQUENTIAL, T_REMOV,
    676 	 "ARCHIVE ", "Python 28454-XXX", ""},     PQUIRK_NOLUNS},
    677 	{{T_SEQUENTIAL, T_REMOV,
    678 	 "WANGTEK ", "5099ES SCSI",      ""},     PQUIRK_NOLUNS},
    679 	{{T_SEQUENTIAL, T_REMOV,
    680 	 "WANGTEK ", "5150ES SCSI",      ""},     PQUIRK_NOLUNS},
    681 	{{T_SEQUENTIAL, T_REMOV,
    682 	 "WANGTEK ", "SCSI-36",		 ""},     PQUIRK_NOLUNS},
    683 	{{T_SEQUENTIAL, T_REMOV,
    684 	 "WangDAT ", "Model 1300      ", "02.4"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    685 	{{T_SEQUENTIAL, T_REMOV,
    686 	 "WangDAT ", "Model 2600      ", "01.7"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    687 	{{T_SEQUENTIAL, T_REMOV,
    688 	 "WangDAT ", "Model 3200      ", "02.2"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    689 	{{T_SEQUENTIAL, T_REMOV,
    690 	 "TEAC    ", "MT-2ST/N50      ", ""},     PQUIRK_NOLUNS},
    691 
    692 	{{T_SCANNER, T_FIXED,
    693 	 "RICOH   ", "IS60            ", "1R08"}, PQUIRK_NOLUNS},
    694 	{{T_SCANNER, T_FIXED,
    695 	 "UMAX    ", "Astra 1200S     ", "V2.9"}, PQUIRK_NOLUNS},
    696 	{{T_SCANNER, T_FIXED,
    697 	 "UMAX    ", "Astra 1220S     ", ""},     PQUIRK_NOLUNS},
    698 	{{T_SCANNER, T_FIXED,
    699 	 "UMAX    ", "UMAX S-6E       ", "V2.0"}, PQUIRK_NOLUNS},
    700 	{{T_SCANNER, T_FIXED,
    701 	 "UMAX    ", "UMAX S-12       ", "V2.1"}, PQUIRK_NOLUNS},
    702 	{{T_SCANNER, T_FIXED,
    703 	 "ULTIMA  ", "A6000C          ", ""},     PQUIRK_NOLUNS},
    704 	{{T_PROCESSOR, T_FIXED,
    705 	 "ESG-SHV",  "SCA HSBP M15",     ""},     PQUIRK_NOLUNS},
    706 	{{T_PROCESSOR, T_FIXED,
    707 	 "SYMBIOS",  "",                 ""},     PQUIRK_NOLUNS},
    708 	{{T_PROCESSOR, T_FIXED,
    709 	 "LITRONIC", "PCMCIA          ", ""},     PQUIRK_NOLUNS},
    710 	{{T_CHANGER, T_REMOV,
    711 	 "SONY    ", "CDL1100         ", ""},     PQUIRK_NOLUNS},
    712 	{{T_ENCLOSURE, T_FIXED,
    713 	 "SUN     ", "SENA            ", ""},     PQUIRK_NOLUNS},
    714 };
    715 
    716 /*
    717  * given a target and lun, ask the device what
    718  * it is, and find the correct driver table
    719  * entry.
    720  */
    721 static int
    722 scsi_probe_device(struct scsibus_softc *sc, int target, int lun)
    723 {
    724 	struct scsipi_channel *chan = sc->sc_channel;
    725 	struct scsipi_periph *periph;
    726 	struct scsipi_inquiry_data inqbuf;
    727 	const struct scsi_quirk_inquiry_pattern *finger;
    728 	int checkdtype, priority, docontinue, quirks;
    729 	struct scsipibus_attach_args sa;
    730 	struct cfdata *cf;
    731 	int locs[SCSIBUSCF_NLOCS];
    732 	struct device *chld;
    733 
    734 	/*
    735 	 * Assume no more luns to search after this one.
    736 	 * If we successfully get Inquiry data and after
    737 	 * merging quirks we find we can probe for more
    738 	 * luns, we will.
    739 	 */
    740 	docontinue = 0;
    741 
    742 	/* Skip this slot if it is already attached. */
    743 	if (scsipi_lookup_periph(chan, target, lun) != NULL)
    744 		return (docontinue);
    745 
    746 	periph = scsipi_alloc_periph(M_NOWAIT);
    747 	if (periph == NULL) {
    748 #ifdef	DIAGNOSTIC
    749 		aprint_error_dev(sc->sc_dev,
    750 		    "cannot allocate periph for target %d lun %d\n",
    751 		    target, lun);
    752 #endif
    753 		return (ENOMEM);
    754 	}
    755 	periph->periph_channel = chan;
    756 	periph->periph_switch = &scsi_probe_dev;
    757 
    758 	periph->periph_target = target;
    759 	periph->periph_lun = lun;
    760 	periph->periph_quirks = chan->chan_defquirks;
    761 
    762 #ifdef SCSIPI_DEBUG
    763 	if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_SCSI &&
    764 	    SCSIPI_DEBUG_TARGET == target &&
    765 	    SCSIPI_DEBUG_LUN == lun)
    766 		periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
    767 #endif
    768 
    769 	/*
    770 	 * Ask the device what it is
    771 	 */
    772 
    773 #ifdef SCSI_2_DEF
    774 	/* some devices need to be told to go to SCSI2 */
    775 	/* However some just explode if you tell them this.. leave it out */
    776 	scsi_change_def(periph, XS_CTL_DISCOVERY | XS_CTL_SILENT);
    777 #endif /* SCSI_2_DEF */
    778 
    779 	/* Now go ask the device all about itself. */
    780 	memset(&inqbuf, 0, sizeof(inqbuf));
    781 	{
    782 		u_int8_t *extension = &inqbuf.flags1;
    783 		int len = 0;
    784 		while (len < 3)
    785 			extension[len++] = '\0';
    786 		while (len < 3 + 28)
    787 			extension[len++] = ' ';
    788 		while (len < 3 + 28 + 20)
    789 			extension[len++] = '\0';
    790 		while (len < 3 + 28 + 20 + 1)
    791 			extension[len++] = '\0';
    792 		while (len < 3 + 28 + 20 + 1 + 1)
    793 			extension[len++] = '\0';
    794 		while (len < 3 + 28 + 20 + 1 + 1 + (8*2))
    795 			extension[len++] = ' ';
    796 	}
    797 	if (scsipi_inquire(periph, &inqbuf,
    798 	    XS_CTL_DISCOVERY | XS_CTL_DATA_ONSTACK | XS_CTL_SILENT) != 0)
    799 		goto bad;
    800 
    801 	periph->periph_type = inqbuf.device & SID_TYPE;
    802 	if (inqbuf.dev_qual2 & SID_REMOVABLE)
    803 		periph->periph_flags |= PERIPH_REMOVABLE;
    804 	periph->periph_version = inqbuf.version & SID_ANSII;
    805 
    806 	/*
    807 	 * Any device qualifier that has the top bit set (qualifier&4 != 0)
    808 	 * is vendor specific and won't match in this switch.
    809 	 * All we do here is throw out bad/negative responses.
    810 	 */
    811 	checkdtype = 0;
    812 	switch (inqbuf.device & SID_QUAL) {
    813 	case SID_QUAL_LU_PRESENT:
    814 		checkdtype = 1;
    815 		break;
    816 
    817 	case SID_QUAL_LU_NOTPRESENT:
    818 	case SID_QUAL_reserved:
    819 	case SID_QUAL_LU_NOT_SUPP:
    820 		goto bad;
    821 
    822 	default:
    823 		break;
    824 	}
    825 
    826 	/* Let the adapter driver handle the device separatley if it wants. */
    827 	if (chan->chan_adapter->adapt_accesschk != NULL &&
    828 	    (*chan->chan_adapter->adapt_accesschk)(periph, &sa.sa_inqbuf))
    829 		goto bad;
    830 
    831 	if (checkdtype) {
    832 		switch (periph->periph_type) {
    833 		case T_DIRECT:
    834 		case T_SEQUENTIAL:
    835 		case T_PRINTER:
    836 		case T_PROCESSOR:
    837 		case T_WORM:
    838 		case T_CDROM:
    839 		case T_SCANNER:
    840 		case T_OPTICAL:
    841 		case T_CHANGER:
    842 		case T_COMM:
    843 		case T_IT8_1:
    844 		case T_IT8_2:
    845 		case T_STORARRAY:
    846 		case T_ENCLOSURE:
    847 		case T_SIMPLE_DIRECT:
    848 		case T_OPTIC_CARD_RW:
    849 		case T_OBJECT_STORED:
    850 		default:
    851 			break;
    852 		case T_NODEVICE:
    853 			goto bad;
    854 		}
    855 	}
    856 
    857 	sa.sa_periph = periph;
    858 	sa.sa_inqbuf.type = inqbuf.device;
    859 	sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
    860 	    T_REMOV : T_FIXED;
    861 	sa.sa_inqbuf.vendor = inqbuf.vendor;
    862 	sa.sa_inqbuf.product = inqbuf.product;
    863 	sa.sa_inqbuf.revision = inqbuf.revision;
    864 	sa.scsipi_info.scsi_version = inqbuf.version;
    865 	sa.sa_inqptr = &inqbuf;
    866 
    867 	finger = scsipi_inqmatch(
    868 	    &sa.sa_inqbuf, scsi_quirk_patterns,
    869 	    sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
    870 	    sizeof(scsi_quirk_patterns[0]), &priority);
    871 
    872 	if (finger != NULL)
    873 		quirks = finger->quirks;
    874 	else
    875 		quirks = 0;
    876 
    877 	/*
    878 	 * Determine the operating mode capabilities of the device.
    879 	 */
    880 	if (periph->periph_version >= 2) {
    881 		if ((inqbuf.flags3 & SID_CmdQue) != 0 &&
    882 		    (quirks & PQUIRK_NOTAG) == 0)
    883 			periph->periph_cap |= PERIPH_CAP_TQING;
    884 		if ((inqbuf.flags3 & SID_Linked) != 0)
    885 			periph->periph_cap |= PERIPH_CAP_LINKCMDS;
    886 		if ((inqbuf.flags3 & SID_Sync) != 0 &&
    887 		    (quirks & PQUIRK_NOSYNC) == 0)
    888 			periph->periph_cap |= PERIPH_CAP_SYNC;
    889 		if ((inqbuf.flags3 & SID_WBus16) != 0 &&
    890 		    (quirks & PQUIRK_NOWIDE) == 0)
    891 			periph->periph_cap |= PERIPH_CAP_WIDE16;
    892 		if ((inqbuf.flags3 & SID_WBus32) != 0 &&
    893 		    (quirks & PQUIRK_NOWIDE) == 0)
    894 			periph->periph_cap |= PERIPH_CAP_WIDE32;
    895 		if ((inqbuf.flags3 & SID_SftRe) != 0)
    896 			periph->periph_cap |= PERIPH_CAP_SFTRESET;
    897 		if ((inqbuf.flags3 & SID_RelAdr) != 0)
    898 			periph->periph_cap |= PERIPH_CAP_RELADR;
    899 		/* SPC-2 */
    900 		if (periph->periph_version >= 3 &&
    901 		    !(quirks & PQUIRK_CAP_NODT)){
    902 			/*
    903 			 * Report ST clocking though CAP_WIDExx/CAP_SYNC.
    904 			 * If the device only supports DT, clear these
    905 			 * flags (DT implies SYNC and WIDE)
    906 			 */
    907 			switch (inqbuf.flags4 & SID_Clocking) {
    908 			case SID_CLOCKING_DT_ONLY:
    909 				periph->periph_cap &=
    910 				    ~(PERIPH_CAP_SYNC |
    911 				      PERIPH_CAP_WIDE16 |
    912 				      PERIPH_CAP_WIDE32);
    913 				/* FALLTHROUGH */
    914 			case SID_CLOCKING_SD_DT:
    915 				periph->periph_cap |= PERIPH_CAP_DT;
    916 				break;
    917 			default: /* ST only or invalid */
    918 				/* nothing to do */
    919 				break;
    920 			}
    921 		}
    922 		if (periph->periph_version >= 3) {
    923 			if (inqbuf.flags4 & SID_IUS)
    924 				periph->periph_cap |= PERIPH_CAP_IUS;
    925 			if (inqbuf.flags4 & SID_QAS)
    926 				periph->periph_cap |= PERIPH_CAP_QAS;
    927 		}
    928 	}
    929 	if (quirks & PQUIRK_CAP_SYNC)
    930 		periph->periph_cap |= PERIPH_CAP_SYNC;
    931 	if (quirks & PQUIRK_CAP_WIDE16)
    932 		periph->periph_cap |= PERIPH_CAP_WIDE16;
    933 
    934 	/*
    935 	 * Now apply any quirks from the table.
    936 	 */
    937 	periph->periph_quirks |= quirks;
    938 	if (periph->periph_version == 0 &&
    939 	    (periph->periph_quirks & PQUIRK_FORCELUNS) == 0)
    940 		periph->periph_quirks |= PQUIRK_NOLUNS;
    941 
    942 	if ((periph->periph_quirks & PQUIRK_NOLUNS) == 0)
    943 		docontinue = 1;
    944 
    945 	locs[SCSIBUSCF_TARGET] = target;
    946 	locs[SCSIBUSCF_LUN] = lun;
    947 
    948 	if ((cf = config_search_loc(config_stdsubmatch, sc->sc_dev,
    949 	     "scsibus", locs, &sa)) != NULL) {
    950 		scsipi_insert_periph(chan, periph);
    951 		/*
    952 		 * XXX Can't assign periph_dev here, because we'll
    953 		 * XXX need it before config_attach() returns.  Must
    954 		 * XXX assign it in periph driver.
    955 		 */
    956 		chld = config_attach_loc(sc->sc_dev, cf, locs, &sa,
    957 					 scsibusprint);
    958 	} else {
    959 		scsibusprint(&sa, device_xname(sc->sc_dev));
    960 		aprint_normal(" not configured\n");
    961 		goto bad;
    962 	}
    963 
    964 	return (docontinue);
    965 
    966 bad:
    967 	free(periph, M_DEVBUF);
    968 	return (docontinue);
    969 }
    970 
    971 /****** Entry points for user control of the SCSI bus. ******/
    972 
    973 static int
    974 scsibusopen(dev_t dev, int flag, int fmt,
    975     struct lwp *l)
    976 {
    977 	struct scsibus_softc *sc;
    978 	int error, unit = minor(dev);
    979 
    980 	sc = device_lookup_private(&scsibus_cd, unit);
    981 	if (sc == NULL)
    982 		return (ENXIO);
    983 
    984 	if (sc->sc_flags & SCSIBUSF_OPEN)
    985 		return (EBUSY);
    986 
    987 	if ((error = scsipi_adapter_addref(sc->sc_channel->chan_adapter)) != 0)
    988 		return (error);
    989 
    990 	sc->sc_flags |= SCSIBUSF_OPEN;
    991 
    992 	return (0);
    993 }
    994 
    995 static int
    996 scsibusclose(dev_t dev, int flag, int fmt,
    997     struct lwp *l)
    998 {
    999 	struct scsibus_softc *sc;
   1000 
   1001 	sc = device_lookup_private(&scsibus_cd, minor(dev));
   1002 	scsipi_adapter_delref(sc->sc_channel->chan_adapter);
   1003 
   1004 	sc->sc_flags &= ~SCSIBUSF_OPEN;
   1005 
   1006 	return (0);
   1007 }
   1008 
   1009 static int
   1010 scsibusioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
   1011 {
   1012 	struct scsibus_softc *sc;
   1013 	struct scsipi_channel *chan;
   1014 	int error;
   1015 
   1016 	sc = device_lookup_private(&scsibus_cd, minor(dev));
   1017 	chan = sc->sc_channel;
   1018 
   1019 	/*
   1020 	 * Enforce write permission for ioctls that change the
   1021 	 * state of the bus.  Host adapter specific ioctls must
   1022 	 * be checked by the adapter driver.
   1023 	 */
   1024 	switch (cmd) {
   1025 	case SCBUSIOSCAN:
   1026 	case SCBUSIODETACH:
   1027 	case SCBUSIORESET:
   1028 		if ((flag & FWRITE) == 0)
   1029 			return (EBADF);
   1030 	}
   1031 
   1032 	switch (cmd) {
   1033 	case SCBUSIOSCAN:
   1034 	    {
   1035 		struct scbusioscan_args *a =
   1036 		    (struct scbusioscan_args *)addr;
   1037 
   1038 		error = scsi_probe_bus(sc, a->sa_target, a->sa_lun);
   1039 		break;
   1040 	    }
   1041 
   1042 	case SCBUSIODETACH:
   1043 	    {
   1044 		struct scbusiodetach_args *a =
   1045 		    (struct scbusiodetach_args *)addr;
   1046 
   1047 		error = scsipi_target_detach(chan, a->sa_target, a->sa_lun, 0);
   1048 		break;
   1049 	    }
   1050 
   1051 
   1052 	case SCBUSIORESET:
   1053 		/* FALLTHROUGH */
   1054 	default:
   1055 		if (chan->chan_adapter->adapt_ioctl == NULL)
   1056 			error = ENOTTY;
   1057 		else
   1058 			error = (*chan->chan_adapter->adapt_ioctl)(chan,
   1059 			    cmd, addr, flag, l->l_proc);
   1060 		break;
   1061 	}
   1062 
   1063 	return (error);
   1064 }
   1065