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scsiconf.c revision 1.292
      1 /*	$NetBSD: scsiconf.c,v 1.292 2021/08/07 16:19:16 thorpej 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 1.292 2021/08/07 16:19:16 thorpej 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/mutex.h>
     60 #include <sys/once.h>
     61 #include <sys/device.h>
     62 #include <sys/conf.h>
     63 #include <sys/fcntl.h>
     64 #include <sys/scsiio.h>
     65 #include <sys/queue.h>
     66 #include <sys/atomic.h>
     67 
     68 #include <dev/scsipi/scsi_all.h>
     69 #include <dev/scsipi/scsipi_all.h>
     70 #include <dev/scsipi/scsiconf.h>
     71 
     72 #include "locators.h"
     73 
     74 static const struct scsipi_periphsw scsi_probe_dev = {
     75 	NULL,
     76 	NULL,
     77 	NULL,
     78 	NULL,
     79 };
     80 
     81 struct scsi_initq {
     82 	struct scsipi_channel *sc_channel;
     83 	TAILQ_ENTRY(scsi_initq) scsi_initq;
     84 };
     85 
     86 static ONCE_DECL(scsi_conf_ctrl);
     87 static TAILQ_HEAD(, scsi_initq)	scsi_initq_head;
     88 static kmutex_t			scsibus_qlock;
     89 static kcondvar_t		scsibus_qcv;
     90 
     91 static int	scsi_probe_device(struct scsibus_softc *, int, int);
     92 
     93 static int	scsibusmatch(device_t, cfdata_t, void *);
     94 static void	scsibusattach(device_t, device_t, void *);
     95 static int	scsibusdetach(device_t, int flags);
     96 static int	scsibusrescan(device_t, const char *, const int *);
     97 static void	scsidevdetached(device_t, device_t);
     98 
     99 CFATTACH_DECL3_NEW(scsibus, sizeof(struct scsibus_softc),
    100     scsibusmatch, scsibusattach, scsibusdetach, NULL,
    101     scsibusrescan, scsidevdetached, DVF_DETACH_SHUTDOWN);
    102 
    103 extern struct cfdriver scsibus_cd;
    104 
    105 static dev_type_open(scsibusopen);
    106 static dev_type_close(scsibusclose);
    107 static dev_type_ioctl(scsibusioctl);
    108 
    109 const struct cdevsw scsibus_cdevsw = {
    110 	.d_open = scsibusopen,
    111 	.d_close = scsibusclose,
    112 	.d_read = noread,
    113 	.d_write = nowrite,
    114 	.d_ioctl = scsibusioctl,
    115 	.d_stop = nostop,
    116 	.d_tty = notty,
    117 	.d_poll = nopoll,
    118 	.d_mmap = nommap,
    119 	.d_kqfilter = nokqfilter,
    120 	.d_discard = nodiscard,
    121 	.d_flag = D_OTHER | D_MPSAFE
    122 };
    123 
    124 static int	scsibusprint(void *, const char *);
    125 static void	scsibus_discover_thread(void *);
    126 static void	scsibus_config(struct scsibus_softc *);
    127 
    128 const struct scsipi_bustype scsi_bustype = {
    129 	.bustype_type = SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI,
    130 	    SCSIPI_BUSTYPE_SCSI_PSCSI),
    131 	.bustype_cmd = scsi_scsipi_cmd,
    132 	.bustype_interpret_sense = scsipi_interpret_sense,
    133 	.bustype_printaddr = scsi_print_addr,
    134 	.bustype_kill_pending = scsi_kill_pending,
    135 	.bustype_async_event_xfer_mode = scsi_async_event_xfer_mode,
    136 };
    137 
    138 const struct scsipi_bustype scsi_fc_bustype = {
    139 	.bustype_type = SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI,
    140 	    SCSIPI_BUSTYPE_SCSI_FC),
    141 	.bustype_cmd = scsi_scsipi_cmd,
    142 	.bustype_interpret_sense = scsipi_interpret_sense,
    143 	.bustype_printaddr = scsi_print_addr,
    144 	.bustype_kill_pending = scsi_kill_pending,
    145 	.bustype_async_event_xfer_mode = scsi_fc_sas_async_event_xfer_mode,
    146 };
    147 
    148 const struct scsipi_bustype scsi_sas_bustype = {
    149 	.bustype_type = SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI,
    150 	    SCSIPI_BUSTYPE_SCSI_SAS),
    151 	.bustype_cmd = scsi_scsipi_cmd,
    152 	.bustype_interpret_sense = scsipi_interpret_sense,
    153 	.bustype_printaddr = scsi_print_addr,
    154 	.bustype_kill_pending = scsi_kill_pending,
    155 	.bustype_async_event_xfer_mode = scsi_fc_sas_async_event_xfer_mode,
    156 };
    157 
    158 const struct scsipi_bustype scsi_usb_bustype = {
    159 	.bustype_type = SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI,
    160 	    SCSIPI_BUSTYPE_SCSI_USB),
    161 	.bustype_cmd = scsi_scsipi_cmd,
    162 	.bustype_interpret_sense = scsipi_interpret_sense,
    163 	.bustype_printaddr = scsi_print_addr,
    164 	.bustype_kill_pending = scsi_kill_pending,
    165 	.bustype_async_event_xfer_mode = NULL,
    166 };
    167 
    168 static int
    169 scsibus_init(void)
    170 {
    171 
    172 	TAILQ_INIT(&scsi_initq_head);
    173 	mutex_init(&scsibus_qlock, MUTEX_DEFAULT, IPL_NONE);
    174 	cv_init(&scsibus_qcv, "scsinitq");
    175 	return 0;
    176 }
    177 
    178 int
    179 scsiprint(void *aux, const char *pnp)
    180 {
    181 	struct scsipi_channel *chan = aux;
    182 	struct scsipi_adapter *adapt = chan->chan_adapter;
    183 
    184 	/* only "scsibus"es can attach to "scsi"s; easy. */
    185 	if (pnp)
    186 		aprint_normal("scsibus at %s", pnp);
    187 
    188 	/* don't print channel if the controller says there can be only one. */
    189 	if (adapt->adapt_nchannels != 1)
    190 		aprint_normal(" channel %d", chan->chan_channel);
    191 
    192 	return (UNCONF);
    193 }
    194 
    195 static int
    196 scsibusmatch(device_t parent, cfdata_t cf, void *aux)
    197 {
    198 	struct scsipi_channel *chan = aux;
    199 
    200 	if (SCSIPI_BUSTYPE_TYPE(chan->chan_bustype->bustype_type) !=
    201 	    SCSIPI_BUSTYPE_SCSI)
    202 		return 0;
    203 
    204 	if (cf->cf_loc[SCSICF_CHANNEL] != chan->chan_channel &&
    205 	    cf->cf_loc[SCSICF_CHANNEL] != SCSICF_CHANNEL_DEFAULT)
    206 		return (0);
    207 
    208 	return (1);
    209 }
    210 
    211 static void
    212 scsibusattach(device_t parent, device_t self, void *aux)
    213 {
    214 	struct scsibus_softc *sc = device_private(self);
    215 	struct scsipi_channel *chan = aux;
    216 	struct scsi_initq *scsi_initq;
    217 
    218 	if (!pmf_device_register(self, NULL, NULL))
    219 		aprint_error_dev(self, "couldn't establish power handler\n");
    220 
    221 	sc->sc_dev = self;
    222 	sc->sc_channel = chan;
    223 	chan->chan_name = device_xname(sc->sc_dev);
    224 
    225 	aprint_naive(": SCSI bus\n");
    226 	aprint_normal(": %d target%s, %d lun%s per target\n",
    227 	    chan->chan_ntargets,
    228 	    chan->chan_ntargets == 1 ? "" : "s",
    229 	    chan->chan_nluns,
    230 	    chan->chan_nluns == 1 ? "" : "s");
    231 
    232 	/*
    233 	 * XXX
    234 	 * newer adapters support more than 256 outstanding commands
    235 	 * per periph and don't use the tag (they eventually allocate one
    236 	 * internally). Right now scsipi always allocate a tag and
    237 	 * is limited to 256 tags, per scsi specs.
    238 	 * this should be revisited
    239 	 */
    240 	if (chan->chan_flags & SCSIPI_CHAN_OPENINGS) {
    241 		if (chan->chan_max_periph > 256)
    242 			chan->chan_max_periph = 256;
    243 	} else {
    244 		if (chan->chan_adapter->adapt_max_periph > 256)
    245 			chan->chan_adapter->adapt_max_periph = 256;
    246 	}
    247 
    248 	if (atomic_inc_uint_nv(&chan_running(chan)) == 1)
    249 		mutex_init(chan_mtx(chan), MUTEX_DEFAULT, IPL_BIO);
    250 
    251 	cv_init(&chan->chan_cv_thr, "scshut");
    252 	cv_init(&chan->chan_cv_comp, "sccomp");
    253 	cv_init(&chan->chan_cv_xs, "xscmd");
    254 
    255 	if (scsipi_adapter_addref(chan->chan_adapter))
    256 		return;
    257 
    258 	RUN_ONCE(&scsi_conf_ctrl, scsibus_init);
    259 
    260 	/* Initialize the channel structure first */
    261 	chan->chan_init_cb = NULL;
    262 	chan->chan_init_cb_arg = NULL;
    263 
    264 	scsi_initq = malloc(sizeof(struct scsi_initq), M_DEVBUF, M_WAITOK);
    265 	scsi_initq->sc_channel = chan;
    266 	TAILQ_INSERT_TAIL(&scsi_initq_head, scsi_initq, scsi_initq);
    267         config_pending_incr(sc->sc_dev);
    268 	if (scsipi_channel_init(chan)) {
    269 		aprint_error_dev(sc->sc_dev, "failed to init channel\n");
    270 		return;
    271 	}
    272 
    273         /*
    274          * Create the discover thread
    275          */
    276         if (kthread_create(PRI_NONE, 0, NULL, scsibus_discover_thread, sc,
    277             &chan->chan_dthread, "%s-d", chan->chan_name)) {
    278                 aprint_error_dev(sc->sc_dev, "unable to create discovery "
    279 		    "thread for channel %d\n", chan->chan_channel);
    280                 return;
    281         }
    282 }
    283 
    284 static void
    285 scsibus_discover_thread(void *arg)
    286 {
    287 	struct scsibus_softc *sc = arg;
    288 
    289 	scsibus_config(sc);
    290 	sc->sc_channel->chan_dthread = NULL;
    291 	kthread_exit(0);
    292 }
    293 
    294 static void
    295 scsibus_config(struct scsibus_softc *sc)
    296 {
    297 	struct scsipi_channel *chan = sc->sc_channel;
    298 	struct scsi_initq *scsi_initq;
    299 
    300 #ifndef SCSI_DELAY
    301 #define SCSI_DELAY 2
    302 #endif
    303 	if ((chan->chan_flags & SCSIPI_CHAN_NOSETTLE) == 0 &&
    304 	    SCSI_DELAY > 0) {
    305 		aprint_normal_dev(sc->sc_dev,
    306 		    "waiting %d seconds for devices to settle...\n",
    307 		    SCSI_DELAY);
    308 		/* ...an identifier we know no one will use... */
    309 		kpause("scsidly", false, SCSI_DELAY * hz, NULL);
    310 	}
    311 
    312 	/* Make sure the devices probe in scsibus order to avoid jitter. */
    313 	mutex_enter(&scsibus_qlock);
    314 	for (;;) {
    315 		scsi_initq = TAILQ_FIRST(&scsi_initq_head);
    316 		if (scsi_initq->sc_channel == chan)
    317 			break;
    318 		cv_wait(&scsibus_qcv, &scsibus_qlock);
    319 	}
    320 	mutex_exit(&scsibus_qlock);
    321 
    322 	scsi_probe_bus(sc, -1, -1);
    323 
    324 	mutex_enter(&scsibus_qlock);
    325 	TAILQ_REMOVE(&scsi_initq_head, scsi_initq, scsi_initq);
    326 	cv_broadcast(&scsibus_qcv);
    327 	mutex_exit(&scsibus_qlock);
    328 
    329 	free(scsi_initq, M_DEVBUF);
    330 
    331 	scsipi_adapter_delref(chan->chan_adapter);
    332 
    333 	config_pending_decr(sc->sc_dev);
    334 }
    335 
    336 static int
    337 scsibusdetach(device_t self, int flags)
    338 {
    339 	struct scsibus_softc *sc = device_private(self);
    340 	struct scsipi_channel *chan = sc->sc_channel;
    341 	int error;
    342 
    343 	/*
    344 	 * Defer while discovery thread is running
    345 	 */
    346 	while (chan->chan_dthread != NULL)
    347 		kpause("scsibusdet", false, hz, NULL);
    348 
    349 	/*
    350 	 * Detach all of the periphs.
    351 	 */
    352 	error = scsipi_target_detach(chan, -1, -1, flags);
    353 	if (error)
    354 		return error;
    355 
    356 	pmf_device_deregister(self);
    357 
    358 	/*
    359 	 * Shut down the channel.
    360 	 */
    361 	scsipi_channel_shutdown(chan);
    362 
    363 	cv_destroy(&chan->chan_cv_xs);
    364 	cv_destroy(&chan->chan_cv_comp);
    365 	cv_destroy(&chan->chan_cv_thr);
    366 
    367 	if (atomic_dec_uint_nv(&chan_running(chan)) == 0)
    368 		mutex_destroy(chan_mtx(chan));
    369 
    370 	return 0;
    371 }
    372 
    373 /*
    374  * Probe the requested scsi bus. It must be already set up.
    375  * target and lun optionally narrow the search if not -1
    376  */
    377 int
    378 scsi_probe_bus(struct scsibus_softc *sc, int target, int lun)
    379 {
    380 	struct scsipi_channel *chan = sc->sc_channel;
    381 	int maxtarget, mintarget, maxlun, minlun;
    382 	int error;
    383 
    384 	if (target == -1) {
    385 		maxtarget = chan->chan_ntargets - 1;
    386 		mintarget = 0;
    387 	} else {
    388 		if (target < 0 || target >= chan->chan_ntargets)
    389 			return (EINVAL);
    390 		maxtarget = mintarget = target;
    391 	}
    392 
    393 	if (lun == -1) {
    394 		maxlun = chan->chan_nluns - 1;
    395 		minlun = 0;
    396 	} else {
    397 		if (lun < 0 || lun >= chan->chan_nluns)
    398 			return (EINVAL);
    399 		maxlun = minlun = lun;
    400 	}
    401 
    402 	/*
    403 	 * Some HBAs provide an abstracted view of the bus; give them an
    404 	 * opportunity to re-scan it before we do.
    405 	 */
    406 	scsipi_adapter_ioctl(chan, SCBUSIOLLSCAN, NULL, 0, curproc);
    407 
    408 	if ((error = scsipi_adapter_addref(chan->chan_adapter)) != 0)
    409 		goto ret;
    410 	for (target = mintarget; target <= maxtarget; target++) {
    411 		if (target == chan->chan_id)
    412 			continue;
    413 		for (lun = minlun; lun <= maxlun; lun++) {
    414 			/*
    415 			 * See if there's a device present, and configure it.
    416 			 */
    417 			if (scsi_probe_device(sc, target, lun) == 0)
    418 				break;
    419 			/* otherwise something says we should look further */
    420 		}
    421 
    422 		/*
    423 		 * Now that we've discovered all of the LUNs on this
    424 		 * I_T Nexus, update the xfer mode for all of them
    425 		 * that we know about.
    426 		 */
    427 		scsipi_set_xfer_mode(chan, target, 1);
    428 	}
    429 
    430 	scsipi_adapter_delref(chan->chan_adapter);
    431 ret:
    432 	return (error);
    433 }
    434 
    435 static int
    436 scsibusrescan(device_t sc, const char *ifattr, const int *locators)
    437 {
    438 
    439 	KASSERT(ifattr && !strcmp(ifattr, "scsibus"));
    440 	KASSERT(locators);
    441 
    442 	return (scsi_probe_bus(device_private(sc),
    443 		locators[SCSIBUSCF_TARGET], locators[SCSIBUSCF_LUN]));
    444 }
    445 
    446 static void
    447 scsidevdetached(device_t self, device_t child)
    448 {
    449 	struct scsibus_softc *sc = device_private(self);
    450 	struct scsipi_channel *chan = sc->sc_channel;
    451 	struct scsipi_periph *periph;
    452 	int target, lun;
    453 
    454 	target = device_locator(child, SCSIBUSCF_TARGET);
    455 	lun = device_locator(child, SCSIBUSCF_LUN);
    456 
    457 	mutex_enter(chan_mtx(chan));
    458 
    459 	periph = scsipi_lookup_periph_locked(chan, target, lun);
    460 	KASSERT(periph != NULL && periph->periph_dev == child);
    461 
    462 	scsipi_remove_periph(chan, periph);
    463 	scsipi_free_periph(periph);
    464 
    465 	mutex_exit(chan_mtx(chan));
    466 }
    467 
    468 /*
    469  * Print out autoconfiguration information for a subdevice.
    470  *
    471  * This is a slight abuse of 'standard' autoconfiguration semantics,
    472  * because 'print' functions don't normally print the colon and
    473  * device information.  However, in this case that's better than
    474  * either printing redundant information before the attach message,
    475  * or having the device driver call a special function to print out
    476  * the standard device information.
    477  */
    478 static int
    479 scsibusprint(void *aux, const char *pnp)
    480 {
    481 	struct scsipibus_attach_args *sa = aux;
    482 	struct scsipi_inquiry_pattern *inqbuf;
    483 	u_int8_t type;
    484 	const char *dtype;
    485 	char vendor[33], product[65], revision[17];
    486 	int target, lun;
    487 
    488 	if (pnp != NULL)
    489 		aprint_normal("%s", pnp);
    490 
    491 	inqbuf = &sa->sa_inqbuf;
    492 
    493 	target = sa->sa_periph->periph_target;
    494 	lun = sa->sa_periph->periph_lun;
    495 	type = inqbuf->type & SID_TYPE;
    496 
    497 	dtype = scsipi_dtype(type);
    498 
    499 	strnvisx(vendor, sizeof(vendor), inqbuf->vendor, 8,
    500 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    501 	strnvisx(product, sizeof(product), inqbuf->product, 16,
    502 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    503 	strnvisx(revision, sizeof(revision), inqbuf->revision, 4,
    504 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    505 
    506 	aprint_normal(" target %d lun %d: <%s, %s, %s> %s %s%s",
    507 		      target, lun, vendor, product, revision, dtype,
    508 		      inqbuf->removable ? "removable" : "fixed",
    509 		      (sa->sa_periph->periph_opcs != NULL)
    510 		        ? " timeout-info" : "");
    511 
    512 	return (UNCONF);
    513 }
    514 
    515 static const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
    516 	{{T_DIRECT, T_REMOV,
    517 	 "Apple   ", "iPod            ", ""},	  PQUIRK_START},
    518 	{{T_CDROM, T_REMOV,
    519 	 "CHINON  ", "CD-ROM CDS-431  ", ""},     PQUIRK_NOLUNS},
    520 	{{T_CDROM, T_REMOV,
    521 	 "CHINON  ", "CD-ROM CDS-435  ", ""},     PQUIRK_NOLUNS},
    522 	{{T_CDROM, T_REMOV,
    523 	 "Chinon  ", "CD-ROM CDS-525  ", ""},     PQUIRK_NOLUNS},
    524 	{{T_CDROM, T_REMOV,
    525 	 "CHINON  ", "CD-ROM CDS-535  ", ""},     PQUIRK_NOLUNS},
    526 	{{T_CDROM, T_REMOV,
    527 	 "DEC     ", "RRD42   (C) DEC ", ""},     PQUIRK_NOLUNS},
    528 	{{T_CDROM, T_REMOV,
    529 	 "DENON   ", "DRD-25X         ", "V"},    PQUIRK_NOLUNS},
    530 	{{T_CDROM, T_REMOV,
    531 	 "GENERIC ", "CRD-BP2         ", ""},     PQUIRK_NOLUNS},
    532 	{{T_CDROM, T_REMOV,
    533 	 "HP      ", "C4324/C4325     ", ""},     PQUIRK_NOLUNS},
    534 	{{T_CDROM, T_REMOV,
    535 	 "IMS     ", "CDD521/10       ", "2.06"}, PQUIRK_NOLUNS},
    536 	{{T_CDROM, T_REMOV,
    537 	 "MATSHITA", "CD-ROM CR-5XX   ", "1.0b"}, PQUIRK_NOLUNS},
    538 	{{T_CDROM, T_REMOV,
    539 	 "MEDAVIS ", "RENO CD-ROMX2A  ", ""},     PQUIRK_NOLUNS},
    540 	{{T_CDROM, T_REMOV,
    541 	 "MEDIAVIS", "CDR-H93MV       ", "1.3"},  PQUIRK_NOLUNS},
    542 	{{T_CDROM, T_REMOV,
    543 	 "NEC     ", "CD-ROM DRIVE:502", ""},     PQUIRK_NOLUNS},
    544 	{{T_CDROM, T_REMOV,
    545 	 "NEC     ", "CD-ROM DRIVE:55 ", ""},     PQUIRK_NOLUNS},
    546 	{{T_CDROM, T_REMOV,
    547 	 "NEC     ", "CD-ROM DRIVE:83 ", ""},     PQUIRK_NOLUNS},
    548 	{{T_CDROM, T_REMOV,
    549 	 "NEC     ", "CD-ROM DRIVE:84 ", ""},     PQUIRK_NOLUNS},
    550 	{{T_CDROM, T_REMOV,
    551 	 "NEC     ", "CD-ROM DRIVE:841", ""},     PQUIRK_NOLUNS},
    552         {{T_CDROM, T_REMOV,
    553 	 "OLYMPUS ", "CDS620E         ", "1.1d"},
    554 			       PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOCAPACITY},
    555 	{{T_CDROM, T_REMOV,
    556 	 "PIONEER ", "CD-ROM DR-124X  ", "1.01"}, PQUIRK_NOLUNS},
    557         {{T_CDROM, T_REMOV,
    558          "PLEXTOR ", "CD-ROM PX-4XCS  ", "1.01"},
    559                                PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    560 	{{T_CDROM, T_REMOV,
    561 	 "SONY    ", "CD-ROM CDU-541  ", ""},     PQUIRK_NOLUNS},
    562 	{{T_CDROM, T_REMOV,
    563 	 "SONY    ", "CD-ROM CDU-55S  ", ""},     PQUIRK_NOLUNS},
    564 	{{T_CDROM, T_REMOV,
    565 	 "SONY    ", "CD-ROM CDU-561  ", ""},     PQUIRK_NOLUNS},
    566 	{{T_CDROM, T_REMOV,
    567 	 "SONY    ", "CD-ROM CDU-76S", ""},
    568 				PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    569 	{{T_CDROM, T_REMOV,
    570 	 "SONY    ", "CD-ROM CDU-8003A", ""},     PQUIRK_NOLUNS},
    571 	{{T_CDROM, T_REMOV,
    572 	 "SONY    ", "CD-ROM CDU-8012 ", ""},     PQUIRK_NOLUNS},
    573 	{{T_CDROM, T_REMOV,
    574 	 "TEAC    ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    575 	{{T_CDROM, T_REMOV,
    576 	 "TEAC    ", "CD-ROM CD-56S   ", "1.0B"}, PQUIRK_NOLUNS},
    577 	{{T_CDROM, T_REMOV,
    578 	 "TEXEL   ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    579 	{{T_CDROM, T_REMOV,
    580 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.09"}, PQUIRK_NOLUNS},
    581 	{{T_CDROM, T_REMOV,
    582 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, PQUIRK_NOLUNS},
    583 	{{T_CDROM, T_REMOV,
    584 	 "TOSHIBA ", "XM-4101TASUNSLCD", ""}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    585 	/* "IBM CDRM00201     !F" 0724 is an IBM OEM Toshiba XM-4101BME */
    586 	{{T_CDROM, T_REMOV,
    587 	 "IBM     ", "CDRM00201     !F", "0724"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    588 	{{T_CDROM, T_REMOV,
    589 	 "ShinaKen", "CD-ROM DM-3x1S",   "1.04"}, PQUIRK_NOLUNS},
    590 	{{T_CDROM, T_REMOV,
    591 	 "JVC     ", "R2626",            ""},     PQUIRK_NOLUNS},
    592 	{{T_CDROM, T_REMOV,
    593 	 "YAMAHA", "CRW8424S",           ""},     PQUIRK_NOLUNS},
    594 	{{T_CDROM, T_REMOV,
    595 	 "NEC     ", "CD-ROM DRIVE:222", ""},	  PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    596 
    597 	{{T_DIRECT, T_FIXED,
    598 	 "MICROP  ", "1588-15MBSUN0669", ""},     PQUIRK_AUTOSAVE},
    599 	{{T_DIRECT, T_FIXED,
    600 	 "MICROP  ", "2217-15MQ1091501", ""},     PQUIRK_NOSYNCCACHE},
    601 	{{T_OPTICAL, T_REMOV,
    602 	 "EPSON   ", "OMD-5010        ", "3.08"}, PQUIRK_NOLUNS},
    603 	{{T_DIRECT, T_FIXED,
    604 	 "ADAPTEC ", "AEC-4412BD",       "1.2A"}, PQUIRK_NOMODESENSE},
    605 	{{T_DIRECT, T_FIXED,
    606 	 "ADAPTEC ", "ACB-4000",         ""},     PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE|PQUIRK_NOMODESENSE},
    607 	{{T_DIRECT, T_FIXED,
    608 	 "DEC     ", "RZ55     (C) DEC", ""},     PQUIRK_AUTOSAVE},
    609 	{{T_DIRECT, T_FIXED,
    610 	 "EMULEX  ", "MD21/S2     ESDI", "A00"},
    611 				PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE},
    612 	{{T_DIRECT, T_FIXED,
    613 	 "MICROP",  "1548-15MZ1077801",  "HZ2P"}, PQUIRK_NOTAG},
    614 	{{T_DIRECT, T_FIXED,
    615 	 "HP      ", "C372",             ""},     PQUIRK_NOTAG},
    616 	{{T_DIRECT, T_FIXED,
    617 	 "IBMRAID ", "0662S",		 ""},     PQUIRK_AUTOSAVE},
    618 	{{T_DIRECT, T_FIXED,
    619 	 "IBM     ", "0663H",		 ""},     PQUIRK_AUTOSAVE},
    620 	{{T_DIRECT, T_FIXED,
    621 	 "IBM",	     "0664",		 ""},     PQUIRK_AUTOSAVE},
    622 	{{T_DIRECT, T_FIXED,
    623 	/* improperly report DT-only sync mode */
    624 	 "IBM     ", "DXHS36D",		 ""},
    625 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    626 	{{T_DIRECT, T_FIXED,
    627 	 "IBM     ", "DXHS18Y",		 ""},
    628 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    629 	{{T_DIRECT, T_FIXED,
    630 	 "IBM     ", "H3171-S2",	 ""},
    631 				PQUIRK_NOLUNS|PQUIRK_AUTOSAVE},
    632 	{{T_DIRECT, T_FIXED,
    633 	 "IBM     ", "KZ-C",		 ""},	  PQUIRK_AUTOSAVE},
    634 	/* Broken IBM disk */
    635 	{{T_DIRECT, T_FIXED,
    636 	 ""	   , "DFRSS2F",		 ""},	  PQUIRK_AUTOSAVE},
    637 	{{T_DIRECT, T_FIXED,
    638 	 "Initio  ", "",		 ""},	  PQUIRK_NOBIGMODESENSE},
    639 	{{T_DIRECT, T_FIXED,
    640 	 "JMicron ", "Generic         ", ""},	  PQUIRK_NOFUA},
    641 	{{T_DIRECT, T_REMOV,
    642 	 "MPL     ", "MC-DISK-        ", ""},     PQUIRK_NOLUNS},
    643 	{{T_DIRECT, T_FIXED,
    644 	 "MAXTOR  ", "XT-3280         ", ""},     PQUIRK_NOLUNS},
    645 	{{T_DIRECT, T_FIXED,
    646 	 "MAXTOR  ", "XT-4380S        ", ""},     PQUIRK_NOLUNS},
    647 	{{T_DIRECT, T_FIXED,
    648 	 "MAXTOR  ", "MXT-1240S       ", ""},     PQUIRK_NOLUNS},
    649 	{{T_DIRECT, T_FIXED,
    650 	 "MAXTOR  ", "XT-4170S        ", ""},     PQUIRK_NOLUNS},
    651 	{{T_DIRECT, T_FIXED,
    652 	 "MAXTOR  ", "XT-8760S",         ""},     PQUIRK_NOLUNS},
    653 	{{T_DIRECT, T_FIXED,
    654 	 "MAXTOR  ", "LXT-213S        ", ""},     PQUIRK_NOLUNS},
    655 	{{T_DIRECT, T_FIXED,
    656 	 "MAXTOR  ", "LXT-213S SUN0207", ""},     PQUIRK_NOLUNS},
    657 	{{T_DIRECT, T_FIXED,
    658 	 "MAXTOR  ", "LXT-200S        ", ""},     PQUIRK_NOLUNS},
    659 	{{T_DIRECT, T_FIXED,
    660 	 "MEGADRV ", "EV1000",           ""},     PQUIRK_NOMODESENSE},
    661 	{{T_DIRECT, T_FIXED,
    662 	 "MICROP", "1991-27MZ",          ""},     PQUIRK_NOTAG},
    663 	{{T_DIRECT, T_FIXED,
    664 	 "MST     ", "SnapLink        ", ""},     PQUIRK_NOLUNS},
    665 	{{T_DIRECT, T_FIXED,
    666 	 "NEC     ", "D3847           ", "0307"}, PQUIRK_NOLUNS},
    667 	{{T_DIRECT, T_FIXED,
    668 	 "QUANTUM ", "ELS85S          ", ""},     PQUIRK_AUTOSAVE},
    669 	{{T_DIRECT, T_FIXED,
    670 	 "QUANTUM ", "LPS525S         ", ""},     PQUIRK_NOLUNS},
    671 	{{T_DIRECT, T_FIXED,
    672 	 "QUANTUM ", "P105S 910-10-94x", ""},     PQUIRK_NOLUNS},
    673 	{{T_DIRECT, T_FIXED,
    674 	 "QUANTUM ", "PD1225S         ", ""},     PQUIRK_NOLUNS},
    675 	{{T_DIRECT, T_FIXED,
    676 	 "QUANTUM ", "PD210S   SUN0207", ""},     PQUIRK_NOLUNS},
    677 	{{T_DIRECT, T_FIXED,
    678 	 "QUANTUM ", "ATLAS IV 9 WLS", "0A0A"},   PQUIRK_CAP_NODT},
    679 	{{T_DIRECT, T_FIXED,
    680 	 "RODIME  ", "RO3000S         ", ""},     PQUIRK_NOLUNS},
    681 	{{T_DIRECT, T_FIXED,
    682 	 "SEAGATE ", "ST125N          ", ""},     PQUIRK_NOLUNS},
    683 	{{T_DIRECT, T_FIXED,
    684 	 "SEAGATE ", "ST157N          ", ""},     PQUIRK_NOLUNS},
    685 	{{T_DIRECT, T_FIXED,
    686 	 "SEAGATE ", "ST296           ", ""},     PQUIRK_NOLUNS},
    687 	{{T_DIRECT, T_FIXED,
    688 	 "SEAGATE ", "ST296N          ", ""},     PQUIRK_NOLUNS},
    689 	{{T_DIRECT, T_FIXED,
    690 	 "SEAGATE ", "ST318404LC      ", ""},     PQUIRK_NOLUNS},
    691 	{{T_DIRECT, T_FIXED,
    692 	 "SEAGATE ", "ST336753LC      ", ""},     PQUIRK_NOLUNS},
    693 	{{T_DIRECT, T_FIXED,
    694 	 "SEAGATE ", "ST336753LW      ", ""},     PQUIRK_NOLUNS},
    695 	{{T_DIRECT, T_FIXED,
    696 	 "SEAGATE ", "ST336754LC      ", ""},     PQUIRK_NOLUNS},
    697 	{{T_DIRECT, T_FIXED,
    698 	 "SEAGATE ", "ST39236LC       ", ""},     PQUIRK_NOLUNS},
    699 	{{T_DIRECT, T_FIXED,
    700 	 "SEAGATE ", "ST15150N        ", ""},     PQUIRK_NOTAG},
    701 	{{T_DIRECT, T_FIXED,
    702 	 "SEAGATE ", "ST19171",          ""},     PQUIRK_NOMODESENSE},
    703 	{{T_DIRECT, T_FIXED,
    704 	 "SEAGATE ", "ST32430N",         ""},     PQUIRK_CAP_SYNC},
    705 	{{T_DIRECT, T_FIXED,
    706 	 "SEAGATE ", "ST34501FC       ", ""},     PQUIRK_NOMODESENSE},
    707 	{{T_DIRECT, T_FIXED,
    708 	 "SEAGATE ", "SX910800N",        ""},     PQUIRK_NOTAG},
    709 	{{T_DIRECT, T_FIXED,
    710 	 "TOSHIBA ", "MK538FB         ", "6027"}, PQUIRK_NOLUNS},
    711 	{{T_DIRECT, T_FIXED,
    712 	 "MICROP  ", "1924",          ""},     PQUIRK_CAP_SYNC},
    713 	{{T_DIRECT, T_FIXED,
    714 	 "FUJITSU ", "M2266",         ""},     PQUIRK_CAP_SYNC},
    715 	{{T_DIRECT, T_FIXED,
    716 	 "FUJITSU ", "M2624S-512      ", ""},     PQUIRK_CAP_SYNC},
    717 	{{T_DIRECT, T_FIXED,
    718 	 "SEAGATE ", "SX336704LC"   , ""}, PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
    719 	{{T_DIRECT, T_FIXED,
    720 	 "SEAGATE ", "SX173404LC",       ""},     PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
    721 
    722 	{{T_DIRECT, T_REMOV,
    723 	 "IOMEGA", "ZIP 100",		 "J.03"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    724 	{{T_DIRECT, T_REMOV,
    725 	 "INSITE", "I325VM",             ""},     PQUIRK_NOLUNS},
    726 
    727 	/* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
    728 	{{T_SEQUENTIAL, T_REMOV,
    729 	 "        ", "                ", "    "}, PQUIRK_NOLUNS},
    730 	{{T_SEQUENTIAL, T_REMOV,
    731 	 "EMULEX  ", "MT-02 QIC       ", ""},     PQUIRK_NOLUNS},
    732 	{{T_SEQUENTIAL, T_REMOV,
    733 	 "CALIPER ", "CP150           ", ""},     PQUIRK_NOLUNS},
    734 	{{T_SEQUENTIAL, T_REMOV,
    735 	 "EXABYTE ", "EXB-8200        ", ""},     PQUIRK_NOLUNS},
    736 	{{T_SEQUENTIAL, T_REMOV,
    737 	 "SONY    ", "GY-10C          ", ""},     PQUIRK_NOLUNS},
    738 	{{T_SEQUENTIAL, T_REMOV,
    739 	 "SONY    ", "SDT-2000        ", "2.09"}, PQUIRK_NOLUNS},
    740 	{{T_SEQUENTIAL, T_REMOV,
    741 	 "SONY    ", "SDT-5000        ", "3."},   PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    742 	{{T_SEQUENTIAL, T_REMOV,
    743 	 "SONY    ", "SDT-5200        ", "3."},   PQUIRK_NOLUNS},
    744 	{{T_SEQUENTIAL, T_REMOV,
    745 	 "TANDBERG", " TDC 3600       ", ""},     PQUIRK_NOLUNS},
    746 	/* Following entry reported as a Tandberg 3600; ref. PR1933 */
    747 	{{T_SEQUENTIAL, T_REMOV,
    748 	 "ARCHIVE ", "VIPER 150  21247", ""},     PQUIRK_NOLUNS},
    749 	/* Following entry for a Cipher ST150S; ref. PR4171 */
    750 	{{T_SEQUENTIAL, T_REMOV,
    751 	 "ARCHIVE ", "VIPER 1500 21247", "2.2G"}, PQUIRK_NOLUNS},
    752 	{{T_SEQUENTIAL, T_REMOV,
    753 	 "ARCHIVE ", "Python 28454-XXX", ""},     PQUIRK_NOLUNS},
    754 	{{T_SEQUENTIAL, T_REMOV,
    755 	 "WANGTEK ", "5099ES SCSI",      ""},     PQUIRK_NOLUNS},
    756 	{{T_SEQUENTIAL, T_REMOV,
    757 	 "WANGTEK ", "5150ES SCSI",      ""},     PQUIRK_NOLUNS},
    758 	{{T_SEQUENTIAL, T_REMOV,
    759 	 "WANGTEK ", "SCSI-36",		 ""},     PQUIRK_NOLUNS},
    760 	{{T_SEQUENTIAL, T_REMOV,
    761 	 "WangDAT ", "Model 1300      ", "02.4"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    762 	{{T_SEQUENTIAL, T_REMOV,
    763 	 "WangDAT ", "Model 2600      ", "01.7"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    764 	{{T_SEQUENTIAL, T_REMOV,
    765 	 "WangDAT ", "Model 3200      ", "02.2"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    766 	{{T_SEQUENTIAL, T_REMOV,
    767 	 "TEAC    ", "MT-2ST/N50      ", ""},     PQUIRK_NOLUNS},
    768 
    769 	{{T_SCANNER, T_FIXED,
    770 	 "RICOH   ", "IS60            ", "1R08"}, PQUIRK_NOLUNS},
    771 	{{T_SCANNER, T_FIXED,
    772 	 "UMAX    ", "Astra 1200S     ", "V2.9"}, PQUIRK_NOLUNS},
    773 	{{T_SCANNER, T_FIXED,
    774 	 "UMAX    ", "Astra 1220S     ", ""},     PQUIRK_NOLUNS},
    775 	{{T_SCANNER, T_FIXED,
    776 	 "UMAX    ", "UMAX S-6E       ", "V2.0"}, PQUIRK_NOLUNS},
    777 	{{T_SCANNER, T_FIXED,
    778 	 "UMAX    ", "UMAX S-12       ", "V2.1"}, PQUIRK_NOLUNS},
    779 	{{T_SCANNER, T_FIXED,
    780 	 "ULTIMA  ", "A6000C          ", ""},     PQUIRK_NOLUNS},
    781 	{{T_PROCESSOR, T_FIXED,
    782 	 "ESG-SHV",  "SCA HSBP M15",     ""},     PQUIRK_NOLUNS},
    783 	{{T_PROCESSOR, T_FIXED,
    784 	 "SYMBIOS",  "",                 ""},     PQUIRK_NOLUNS},
    785 	{{T_PROCESSOR, T_FIXED,
    786 	 "LITRONIC", "PCMCIA          ", ""},     PQUIRK_NOLUNS},
    787 	{{T_CHANGER, T_REMOV,
    788 	 "SONY    ", "CDL1100         ", ""},     PQUIRK_NOLUNS},
    789 	{{T_ENCLOSURE, T_FIXED,
    790 	 "SUN     ", "SENA            ", ""},     PQUIRK_NOLUNS},
    791 };
    792 
    793 /*
    794  * given a target and lun, ask the device what
    795  * it is, and find the correct driver table
    796  * entry.
    797  */
    798 static int
    799 scsi_probe_device(struct scsibus_softc *sc, int target, int lun)
    800 {
    801 	struct scsipi_channel *chan = sc->sc_channel;
    802 	struct scsipi_periph *periph;
    803 	struct scsipi_inquiry_data inqbuf;
    804 	const struct scsi_quirk_inquiry_pattern *finger;
    805 	int checkdtype, priority, docontinue, quirks;
    806 	struct scsipibus_attach_args sa;
    807 	cfdata_t cf;
    808 	int locs[SCSIBUSCF_NLOCS];
    809 
    810 	/*
    811 	 * Assume no more LUNs to search after this one.
    812 	 * If we successfully get Inquiry data and after
    813 	 * merging quirks we find we can probe for more
    814 	 * LUNs, we will.
    815 	 */
    816 	docontinue = 0;
    817 
    818 	/* Skip this slot if it is already attached. */
    819 	if (scsipi_lookup_periph(chan, target, lun) != NULL)
    820 		return (docontinue);
    821 
    822 	periph = scsipi_alloc_periph(M_WAITOK);
    823 	periph->periph_channel = chan;
    824 	periph->periph_switch = &scsi_probe_dev;
    825 
    826 	periph->periph_target = target;
    827 	periph->periph_lun = lun;
    828 	periph->periph_quirks = chan->chan_defquirks;
    829 
    830 #ifdef SCSIPI_DEBUG
    831 	if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_SCSI &&
    832 	    SCSIPI_DEBUG_TARGET == target &&
    833 	    SCSIPI_DEBUG_LUN == lun)
    834 		periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
    835 #endif
    836 
    837 	/*
    838 	 * Ask the device what it is
    839 	 */
    840 
    841 #ifdef SCSI_2_DEF
    842 	/* some devices need to be told to go to SCSI2 */
    843 	/* However some just explode if you tell them this.. leave it out */
    844 	scsi_change_def(periph, XS_CTL_DISCOVERY | XS_CTL_SILENT);
    845 #endif /* SCSI_2_DEF */
    846 
    847 	/* Now go ask the device all about itself. */
    848 	memset(&inqbuf, 0, sizeof(inqbuf));
    849 	{
    850 		u_int8_t *extension = &inqbuf.flags1;
    851 		int len = 0;
    852 		while (len < 3)
    853 			extension[len++] = '\0';
    854 		while (len < 3 + 28)
    855 			extension[len++] = ' ';
    856 		while (len < 3 + 28 + 20)
    857 			extension[len++] = '\0';
    858 		while (len < 3 + 28 + 20 + 1)
    859 			extension[len++] = '\0';
    860 		while (len < 3 + 28 + 20 + 1 + 1)
    861 			extension[len++] = '\0';
    862 		while (len < 3 + 28 + 20 + 1 + 1 + (8*2))
    863 			extension[len++] = ' ';
    864 	}
    865 	if (scsipi_inquire(periph, &inqbuf, XS_CTL_DISCOVERY | XS_CTL_SILENT))
    866 		goto bad;
    867 
    868 	periph->periph_type = inqbuf.device & SID_TYPE;
    869 	if (inqbuf.dev_qual2 & SID_REMOVABLE)
    870 		periph->periph_flags |= PERIPH_REMOVABLE;
    871 	periph->periph_version = inqbuf.version & SID_ANSII;
    872 
    873 	/*
    874 	 * Any device qualifier that has the top bit set (qualifier&4 != 0)
    875 	 * is vendor specific and won't match in this switch.
    876 	 * All we do here is throw out bad/negative responses.
    877 	 */
    878 	checkdtype = 0;
    879 	switch (inqbuf.device & SID_QUAL) {
    880 	case SID_QUAL_LU_PRESENT:
    881 		checkdtype = 1;
    882 		break;
    883 
    884 	case SID_QUAL_LU_NOTPRESENT:
    885 	case SID_QUAL_reserved:
    886 	case SID_QUAL_LU_NOT_SUPP:
    887 		goto bad;
    888 
    889 	default:
    890 		break;
    891 	}
    892 
    893 	/* Let the adapter driver handle the device separately if it wants. */
    894 	if (chan->chan_adapter->adapt_accesschk != NULL &&
    895 	    (*chan->chan_adapter->adapt_accesschk)(periph, &sa.sa_inqbuf))
    896 		goto bad;
    897 
    898 	if (checkdtype) {
    899 		switch (periph->periph_type) {
    900 		case T_DIRECT:
    901 		case T_SEQUENTIAL:
    902 		case T_PRINTER:
    903 		case T_PROCESSOR:
    904 		case T_WORM:
    905 		case T_CDROM:
    906 		case T_SCANNER:
    907 		case T_OPTICAL:
    908 		case T_CHANGER:
    909 		case T_COMM:
    910 		case T_IT8_1:
    911 		case T_IT8_2:
    912 		case T_STORARRAY:
    913 		case T_ENCLOSURE:
    914 		case T_SIMPLE_DIRECT:
    915 		case T_OPTIC_CARD_RW:
    916 		case T_OBJECT_STORED:
    917 		default:
    918 			break;
    919 		case T_NODEVICE:
    920 			goto bad;
    921 		}
    922 	}
    923 
    924 	sa.sa_periph = periph;
    925 	sa.sa_inqbuf.type = inqbuf.device;
    926 	sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
    927 	    T_REMOV : T_FIXED;
    928 	sa.sa_inqbuf.vendor = inqbuf.vendor;
    929 	sa.sa_inqbuf.product = inqbuf.product;
    930 	sa.sa_inqbuf.revision = inqbuf.revision;
    931 	sa.scsipi_info.scsi_version = inqbuf.version;
    932 	sa.sa_inqptr = &inqbuf;
    933 
    934 	finger = scsipi_inqmatch(
    935 	    &sa.sa_inqbuf, scsi_quirk_patterns,
    936 	    sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
    937 	    sizeof(scsi_quirk_patterns[0]), &priority);
    938 
    939 	if (finger != NULL)
    940 		quirks = finger->quirks;
    941 	else
    942 		quirks = 0;
    943 
    944 	/*
    945 	 * Determine the operating mode capabilities of the device.
    946 	 */
    947 	if (periph->periph_version >= 2) {
    948 		if ((inqbuf.flags3 & SID_CmdQue) != 0 &&
    949 		    (quirks & PQUIRK_NOTAG) == 0)
    950 			periph->periph_cap |= PERIPH_CAP_TQING;
    951 		if ((inqbuf.flags3 & SID_Linked) != 0)
    952 			periph->periph_cap |= PERIPH_CAP_LINKCMDS;
    953 		if ((inqbuf.flags3 & SID_Sync) != 0 &&
    954 		    (quirks & PQUIRK_NOSYNC) == 0)
    955 			periph->periph_cap |= PERIPH_CAP_SYNC;
    956 		if ((inqbuf.flags3 & SID_WBus16) != 0 &&
    957 		    (quirks & PQUIRK_NOWIDE) == 0)
    958 			periph->periph_cap |= PERIPH_CAP_WIDE16;
    959 		if ((inqbuf.flags3 & SID_WBus32) != 0 &&
    960 		    (quirks & PQUIRK_NOWIDE) == 0)
    961 			periph->periph_cap |= PERIPH_CAP_WIDE32;
    962 		if ((inqbuf.flags3 & SID_SftRe) != 0)
    963 			periph->periph_cap |= PERIPH_CAP_SFTRESET;
    964 		if ((inqbuf.flags3 & SID_RelAdr) != 0)
    965 			periph->periph_cap |= PERIPH_CAP_RELADR;
    966 		/* SPC-2 */
    967 		if (periph->periph_version >= 3 &&
    968 		    !(quirks & PQUIRK_CAP_NODT)){
    969 			/*
    970 			 * Report ST clocking though CAP_WIDExx/CAP_SYNC.
    971 			 * If the device only supports DT, clear these
    972 			 * flags (DT implies SYNC and WIDE)
    973 			 */
    974 			switch (inqbuf.flags4 & SID_Clocking) {
    975 			case SID_CLOCKING_DT_ONLY:
    976 				periph->periph_cap &=
    977 				    ~(PERIPH_CAP_SYNC |
    978 				      PERIPH_CAP_WIDE16 |
    979 				      PERIPH_CAP_WIDE32);
    980 				/* FALLTHROUGH */
    981 			case SID_CLOCKING_SD_DT:
    982 				periph->periph_cap |= PERIPH_CAP_DT;
    983 				break;
    984 			default: /* ST only or invalid */
    985 				/* nothing to do */
    986 				break;
    987 			}
    988 		}
    989 		if (periph->periph_version >= 3) {
    990 			if (inqbuf.flags4 & SID_IUS)
    991 				periph->periph_cap |= PERIPH_CAP_IUS;
    992 			if (inqbuf.flags4 & SID_QAS)
    993 				periph->periph_cap |= PERIPH_CAP_QAS;
    994 		}
    995 	}
    996 	if (quirks & PQUIRK_CAP_SYNC)
    997 		periph->periph_cap |= PERIPH_CAP_SYNC;
    998 	if (quirks & PQUIRK_CAP_WIDE16)
    999 		periph->periph_cap |= PERIPH_CAP_WIDE16;
   1000 
   1001 	/*
   1002 	 * Now apply any quirks from the table.
   1003 	 */
   1004 	periph->periph_quirks |= quirks;
   1005 	if (periph->periph_version == 0 &&
   1006 	    (periph->periph_quirks & PQUIRK_FORCELUNS) == 0)
   1007 		periph->periph_quirks |= PQUIRK_NOLUNS;
   1008 
   1009 	if ((periph->periph_quirks & PQUIRK_NOLUNS) == 0)
   1010 		docontinue = 1;
   1011 
   1012 	locs[SCSIBUSCF_TARGET] = target;
   1013 	locs[SCSIBUSCF_LUN] = lun;
   1014 
   1015 	if ((cf = config_search(sc->sc_dev, &sa,
   1016 				CFARGS(.submatch = config_stdsubmatch,
   1017 				       .locators = locs))) != NULL) {
   1018 		scsipi_insert_periph(chan, periph);
   1019 
   1020 		/*
   1021 		 * Determine supported opcodes and timeouts if available.
   1022 		 * Only do this on peripherals reporting SCSI version 3
   1023 		 * or greater - this command isn't in the SCSI-2 spec. and
   1024 		 * it causes either timeouts or peripherals disappearing
   1025 		 * when sent to some SCSI-1 or SCSI-2 peripherals.
   1026 		 */
   1027 		if (periph->periph_version >= 3)
   1028 			scsipi_get_opcodeinfo(periph);
   1029 
   1030 		/*
   1031 		 * XXX Can't assign periph_dev here, because we'll
   1032 		 * XXX need it before config_attach() returns.  Must
   1033 		 * XXX assign it in periph driver.
   1034 		 */
   1035 		config_attach(sc->sc_dev, cf, &sa, scsibusprint,
   1036 		    CFARGS(.locators = locs));
   1037 	} else {
   1038 		scsibusprint(&sa, device_xname(sc->sc_dev));
   1039 		aprint_normal(" not configured\n");
   1040 		goto bad;
   1041 	}
   1042 
   1043 	return (docontinue);
   1044 
   1045 bad:
   1046 	scsipi_free_periph(periph);
   1047 	return (docontinue);
   1048 }
   1049 
   1050 /****** Entry points for user control of the SCSI bus. ******/
   1051 
   1052 static int
   1053 scsibusopen(dev_t dev, int flag, int fmt,
   1054     struct lwp *l)
   1055 {
   1056 	struct scsibus_softc *sc;
   1057 	int error, unit = minor(dev);
   1058 
   1059 	sc = device_lookup_private(&scsibus_cd, unit);
   1060 	if (sc == NULL)
   1061 		return (ENXIO);
   1062 
   1063 	if (sc->sc_flags & SCSIBUSF_OPEN)
   1064 		return (EBUSY);
   1065 
   1066 	if ((error = scsipi_adapter_addref(sc->sc_channel->chan_adapter)) != 0)
   1067 		return (error);
   1068 
   1069 	sc->sc_flags |= SCSIBUSF_OPEN;
   1070 
   1071 	return (0);
   1072 }
   1073 
   1074 static int
   1075 scsibusclose(dev_t dev, int flag, int fmt,
   1076     struct lwp *l)
   1077 {
   1078 	struct scsibus_softc *sc;
   1079 
   1080 	sc = device_lookup_private(&scsibus_cd, minor(dev));
   1081 	scsipi_adapter_delref(sc->sc_channel->chan_adapter);
   1082 
   1083 	sc->sc_flags &= ~SCSIBUSF_OPEN;
   1084 
   1085 	return (0);
   1086 }
   1087 
   1088 static int
   1089 scsibusioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
   1090 {
   1091 	struct scsibus_softc *sc;
   1092 	struct scsipi_channel *chan;
   1093 	int error;
   1094 
   1095 	sc = device_lookup_private(&scsibus_cd, minor(dev));
   1096 	chan = sc->sc_channel;
   1097 
   1098 	/*
   1099 	 * Enforce write permission for ioctls that change the
   1100 	 * state of the bus.  Host adapter specific ioctls must
   1101 	 * be checked by the adapter driver.
   1102 	 */
   1103 	switch (cmd) {
   1104 	case SCBUSIOSCAN:
   1105 	case SCBUSIODETACH:
   1106 	case SCBUSIORESET:
   1107 		if ((flag & FWRITE) == 0)
   1108 			return (EBADF);
   1109 	}
   1110 
   1111 	switch (cmd) {
   1112 	case SCBUSIOSCAN:
   1113 	    {
   1114 		struct scbusioscan_args *a =
   1115 		    (struct scbusioscan_args *)addr;
   1116 
   1117 		error = scsi_probe_bus(sc, a->sa_target, a->sa_lun);
   1118 		break;
   1119 	    }
   1120 
   1121 	case SCBUSIODETACH:
   1122 	    {
   1123 		struct scbusiodetach_args *a =
   1124 		    (struct scbusiodetach_args *)addr;
   1125 
   1126 		error = scsipi_target_detach(chan, a->sa_target, a->sa_lun, 0);
   1127 		break;
   1128 	    }
   1129 
   1130 
   1131 	case SCBUSIORESET:
   1132 		/* FALLTHROUGH */
   1133 	default:
   1134 		error = scsipi_adapter_ioctl(chan, cmd, addr, flag, l->l_proc);
   1135 		break;
   1136 	}
   1137 
   1138 	return (error);
   1139 }
   1140