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      1 /*	$NetBSD: scsiconf.c,v 1.306 2024/11/22 06:52:57 mlelstv 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 1.306 2024/11/22 06:52:57 mlelstv 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 #include <sys/kmem.h>
     68 
     69 #include <dev/scsipi/scsi_all.h>
     70 #include <dev/scsipi/scsipi_all.h>
     71 #include <dev/scsipi/scsiconf.h>
     72 
     73 #include "locators.h"
     74 
     75 static const struct scsipi_periphsw scsi_probe_dev = {
     76 	NULL,
     77 	NULL,
     78 	NULL,
     79 	NULL,
     80 };
     81 
     82 struct scsi_initq {
     83 	struct scsipi_channel *sc_channel;
     84 	TAILQ_ENTRY(scsi_initq) scsi_initq;
     85 };
     86 
     87 static ONCE_DECL(scsi_conf_ctrl);
     88 static TAILQ_HEAD(, scsi_initq)	scsi_initq_head;
     89 static kmutex_t			scsibus_qlock;
     90 static kcondvar_t		scsibus_qcv;
     91 
     92 static int	scsi_probe_device(struct scsibus_softc *, int, int);
     93 
     94 static int	scsibusmatch(device_t, cfdata_t, void *);
     95 static void	scsibusattach(device_t, device_t, void *);
     96 static int	scsibusdetach(device_t, int flags);
     97 static int	scsibusrescan(device_t, const char *, const int *);
     98 static void	scsidevdetached(device_t, device_t);
     99 
    100 CFATTACH_DECL3_NEW(scsibus, sizeof(struct scsibus_softc),
    101     scsibusmatch, scsibusattach, scsibusdetach, NULL,
    102     scsibusrescan, scsidevdetached, DVF_DETACH_SHUTDOWN);
    103 
    104 extern struct cfdriver scsibus_cd;
    105 
    106 static dev_type_open(scsibusopen);
    107 static dev_type_close(scsibusclose);
    108 static dev_type_ioctl(scsibusioctl);
    109 
    110 const struct cdevsw scsibus_cdevsw = {
    111 	.d_open = scsibusopen,
    112 	.d_close = scsibusclose,
    113 	.d_read = noread,
    114 	.d_write = nowrite,
    115 	.d_ioctl = scsibusioctl,
    116 	.d_stop = nostop,
    117 	.d_tty = notty,
    118 	.d_poll = nopoll,
    119 	.d_mmap = nommap,
    120 	.d_kqfilter = nokqfilter,
    121 	.d_discard = nodiscard,
    122 	.d_flag = D_OTHER | D_MPSAFE
    123 };
    124 
    125 static int	scsibusprint(void *, const char *);
    126 static void	scsibus_discover_thread(void *);
    127 static void	scsibus_config(struct scsibus_softc *);
    128 
    129 static int
    130 scsibus_init(void)
    131 {
    132 
    133 	TAILQ_INIT(&scsi_initq_head);
    134 	mutex_init(&scsibus_qlock, MUTEX_DEFAULT, IPL_NONE);
    135 	cv_init(&scsibus_qcv, "scsinitq");
    136 	return 0;
    137 }
    138 
    139 static int
    140 scsibusmatch(device_t parent, cfdata_t cf, void *aux)
    141 {
    142 	struct scsipi_channel *chan = aux;
    143 
    144 	if (SCSIPI_BUSTYPE_TYPE(chan->chan_bustype->bustype_type) !=
    145 	    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(device_t parent, device_t 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 	/*
    177 	 * XXX
    178 	 * newer adapters support more than 256 outstanding commands
    179 	 * per periph and don't use the tag (they eventually allocate one
    180 	 * internally). Right now scsipi always allocate a tag and
    181 	 * is limited to 256 tags, per scsi specs.
    182 	 * this should be revisited
    183 	 */
    184 	if (chan->chan_flags & SCSIPI_CHAN_OPENINGS) {
    185 		if (chan->chan_max_periph > 256)
    186 			chan->chan_max_periph = 256;
    187 	} else {
    188 		if (chan->chan_adapter->adapt_max_periph > 256)
    189 			chan->chan_adapter->adapt_max_periph = 256;
    190 	}
    191 
    192 	if (atomic_inc_uint_nv(&chan_running(chan)) == 1)
    193 		mutex_init(chan_mtx(chan), MUTEX_DEFAULT, IPL_BIO);
    194 
    195 	cv_init(&chan->chan_cv_thr, "scshut");
    196 	cv_init(&chan->chan_cv_comp, "sccomp");
    197 	cv_init(&chan->chan_cv_xs, "xscmd");
    198 
    199 	if (scsipi_adapter_addref(chan->chan_adapter))
    200 		return;
    201 
    202 	RUN_ONCE(&scsi_conf_ctrl, scsibus_init);
    203 
    204 	/* Initialize the channel structure first */
    205 	chan->chan_init_cb = NULL;
    206 	chan->chan_init_cb_arg = NULL;
    207 
    208 	scsi_initq = malloc(sizeof(struct scsi_initq), M_DEVBUF, M_WAITOK);
    209 	scsi_initq->sc_channel = chan;
    210 	TAILQ_INSERT_TAIL(&scsi_initq_head, scsi_initq, scsi_initq);
    211         config_pending_incr(sc->sc_dev);
    212 	if (scsipi_channel_init(chan)) {
    213 		aprint_error_dev(sc->sc_dev, "failed to init channel\n");
    214 		return;
    215 	}
    216 
    217         /*
    218          * Create the discover thread
    219          */
    220         if (kthread_create(PRI_NONE, 0, NULL, scsibus_discover_thread, sc,
    221             &chan->chan_dthread, "%s-d", chan->chan_name)) {
    222                 aprint_error_dev(sc->sc_dev, "unable to create discovery "
    223 		    "thread for channel %d\n", chan->chan_channel);
    224                 return;
    225         }
    226 }
    227 
    228 static void
    229 scsibus_discover_thread(void *arg)
    230 {
    231 	struct scsibus_softc *sc = arg;
    232 
    233 	scsibus_config(sc);
    234 	sc->sc_channel->chan_dthread = NULL;
    235 	kthread_exit(0);
    236 }
    237 
    238 static void
    239 scsibus_config(struct scsibus_softc *sc)
    240 {
    241 	struct scsipi_channel *chan = sc->sc_channel;
    242 	struct scsi_initq *scsi_initq;
    243 
    244 #ifndef SCSI_DELAY
    245 #define SCSI_DELAY 2
    246 #endif
    247 	if ((chan->chan_flags & SCSIPI_CHAN_NOSETTLE) == 0 &&
    248 	    SCSI_DELAY > 0) {
    249 		aprint_normal_dev(sc->sc_dev,
    250 		    "waiting %d seconds for devices to settle...\n",
    251 		    SCSI_DELAY);
    252 		/* ...an identifier we know no one will use... */
    253 		kpause("scsidly", false, SCSI_DELAY * hz, NULL);
    254 	}
    255 
    256 	/* Make sure the devices probe in scsibus order to avoid jitter. */
    257 	mutex_enter(&scsibus_qlock);
    258 	for (;;) {
    259 		scsi_initq = TAILQ_FIRST(&scsi_initq_head);
    260 		if (scsi_initq->sc_channel == chan)
    261 			break;
    262 		cv_wait(&scsibus_qcv, &scsibus_qlock);
    263 	}
    264 	mutex_exit(&scsibus_qlock);
    265 
    266 	scsi_probe_bus(sc, -1, -1);
    267 
    268 	mutex_enter(&scsibus_qlock);
    269 	TAILQ_REMOVE(&scsi_initq_head, scsi_initq, scsi_initq);
    270 	cv_broadcast(&scsibus_qcv);
    271 	mutex_exit(&scsibus_qlock);
    272 
    273 	free(scsi_initq, M_DEVBUF);
    274 
    275 	scsipi_adapter_delref(chan->chan_adapter);
    276 
    277 	config_pending_decr(sc->sc_dev);
    278 }
    279 
    280 static int
    281 scsibusdetach(device_t self, int flags)
    282 {
    283 	struct scsibus_softc *sc = device_private(self);
    284 	struct scsipi_channel *chan = sc->sc_channel;
    285 	int error;
    286 
    287 	/*
    288 	 * Defer while discovery thread is running
    289 	 */
    290 	while (chan->chan_dthread != NULL)
    291 		kpause("scsibusdet", false, hz, NULL);
    292 
    293 	/*
    294 	 * Detach all of the periphs.
    295 	 */
    296 	error = scsipi_target_detach(chan, -1, -1, flags);
    297 	if (error)
    298 		return error;
    299 
    300 	pmf_device_deregister(self);
    301 
    302 	/*
    303 	 * Shut down the channel.
    304 	 */
    305 	scsipi_channel_shutdown(chan);
    306 
    307 	cv_destroy(&chan->chan_cv_xs);
    308 	cv_destroy(&chan->chan_cv_comp);
    309 	cv_destroy(&chan->chan_cv_thr);
    310 
    311 	membar_release();
    312 	if (atomic_dec_uint_nv(&chan_running(chan)) == 0) {
    313 		membar_acquire();
    314 		mutex_destroy(chan_mtx(chan));
    315 	}
    316 
    317 	return 0;
    318 }
    319 
    320 static int
    321 lun_compar(const void *a, const void *b)
    322 {
    323 	const uint16_t * const la = a, * const lb = b;
    324 
    325 	if (*la < *lb)
    326 		return -1;
    327 	if (*la > *lb)
    328 		return 1;
    329 	return 0;
    330 }
    331 
    332 static int
    333 scsi_report_luns(struct scsibus_softc *sc, int target,
    334     uint16_t ** const luns, size_t *nluns)
    335 {
    336 	struct scsi_report_luns replun;
    337 	struct scsi_report_luns_header *rlr;
    338 	struct scsi_report_luns_lun *lunp;
    339 
    340 	struct scsipi_channel *chan = sc->sc_channel;
    341 	struct scsipi_inquiry_data inqbuf;
    342 	struct scsipi_periph *periph;
    343 	uint16_t tmp;
    344 
    345 	int error;
    346 	size_t i, rlrlen, rlrlenmin;
    347 
    348 	memset(&replun, 0, sizeof(replun));
    349 
    350 	periph = scsipi_alloc_periph(M_WAITOK);
    351 	periph->periph_channel = chan;
    352 	periph->periph_switch = &scsi_probe_dev;
    353 
    354 	periph->periph_target = target;
    355 	periph->periph_lun = 0;
    356 	periph->periph_quirks = chan->chan_defquirks;
    357 
    358 	if ((error = scsipi_inquire(periph, &inqbuf,
    359 	    XS_CTL_DISCOVERY | XS_CTL_SILENT)))
    360 		goto end2;
    361 	periph->periph_version = inqbuf.version & SID_ANSII;
    362 	if (periph->periph_version < 3) {
    363 		error = ENOTSUP;
    364 		goto end2;
    365 	}
    366 
    367 	rlrlen = rlrlenmin = sizeof(*rlr) + sizeof(*lunp) * 1;
    368 
    369 again:
    370 	rlr = kmem_zalloc(rlrlen, KM_SLEEP);
    371 
    372 	replun.opcode = SCSI_REPORT_LUNS;
    373 	replun.selectreport = SELECTREPORT_NORMAL;
    374 	_lto4b(rlrlen, replun.alloclen);
    375 
    376 	error = scsipi_command(periph, (void *)&replun, sizeof(replun),
    377 	    (void *)rlr, rlrlen, SCSIPIRETRIES, 10000, NULL,
    378 	    XS_CTL_DATA_IN | XS_CTL_DISCOVERY | XS_CTL_SILENT);
    379 	if (error)
    380 		goto end;
    381 
    382 	if (sizeof(*rlr) + _4btol(rlr->length) > rlrlen) {
    383 	    	const size_t old_rlrlen = rlrlen;
    384 		rlrlen = sizeof(*rlr) + uimin(_4btol(rlr->length),
    385 		    16383 * sizeof(*lunp));
    386 		kmem_free(rlr, old_rlrlen);
    387 		rlr = NULL;
    388 		if (rlrlen < rlrlenmin) {
    389 			error = EIO;
    390 			goto end;
    391 		}
    392 		goto again;
    393 	}
    394 
    395 	KASSERT(nluns != NULL);
    396 	*nluns = (rlrlen - sizeof(*rlr)) / sizeof(*lunp);
    397 
    398 	KASSERT(luns != NULL);
    399 	*luns = kmem_alloc(*nluns * sizeof(**luns), KM_SLEEP);
    400 
    401 	for (i = 0; i < *nluns; i++) {
    402 		lunp = &((struct scsi_report_luns_lun *)&rlr[1])[i];
    403 		switch (lunp->lun[0] & 0xC0) {
    404 		default:
    405 			scsi_print_addr(periph);
    406 			printf("LUN %016"PRIx64" ignored\n", _8btol(lunp->lun));
    407 			(*luns)[i] = 0;
    408 			break;
    409 		case 0x40:
    410 			(*luns)[i] = _2btol(&lunp->lun[0]) & 0x3FFF;
    411 			break;
    412 		case 0x00:
    413 			(*luns)[i] = _2btol(&lunp->lun[0]) & 0x00FF;
    414 			break;
    415 		}
    416 	}
    417 
    418 	kheapsort(*luns, *nluns, sizeof(**luns), lun_compar, &tmp);
    419 
    420 end:
    421 	if (rlr)
    422 		kmem_free(rlr, rlrlen);
    423 end2:
    424 	scsipi_free_periph(periph);
    425 	return error;
    426 }
    427 
    428 static void
    429 scsi_discover_luns(struct scsibus_softc *sc, int target, int minlun, int maxlun)
    430 {
    431 	uint16_t *luns = NULL;	/* XXX gcc */
    432 	size_t nluns = 0;	/* XXX gcc */
    433 
    434 	if (scsi_report_luns(sc, target, &luns, &nluns) == 0) {
    435 		for (size_t i = 0; i < nluns; i++)
    436 			if (luns[i] >= minlun && luns[i] <= maxlun)
    437 				scsi_probe_device(sc, target, luns[i]);
    438 		kmem_free(luns, sizeof(*luns) * nluns);
    439 		return;
    440 	}
    441 
    442 	for (int lun = minlun; lun <= maxlun; lun++) {
    443 		/*
    444 		 * See if there's a device present, and configure it.
    445 		 */
    446 		if (scsi_probe_device(sc, target, lun) == 0)
    447 			break;
    448 		/* otherwise something says we should look further */
    449 	}
    450 }
    451 
    452 /*
    453  * Probe the requested scsi bus. It must be already set up.
    454  * target and lun optionally narrow the search if not -1
    455  */
    456 int
    457 scsi_probe_bus(struct scsibus_softc *sc, int target, int lun)
    458 {
    459 	struct scsipi_channel *chan = sc->sc_channel;
    460 	int maxtarget, mintarget, maxlun, minlun;
    461 	int error;
    462 
    463 	if (target == -1) {
    464 		maxtarget = chan->chan_ntargets - 1;
    465 		mintarget = 0;
    466 	} else {
    467 		if (target < 0 || target >= chan->chan_ntargets)
    468 			return (EINVAL);
    469 		maxtarget = mintarget = target;
    470 	}
    471 
    472 	if (lun == -1) {
    473 		maxlun = chan->chan_nluns - 1;
    474 		minlun = 0;
    475 	} else {
    476 		if (lun < 0 || lun >= chan->chan_nluns)
    477 			return (EINVAL);
    478 		maxlun = minlun = lun;
    479 	}
    480 
    481 	/*
    482 	 * Some HBAs provide an abstracted view of the bus; give them an
    483 	 * opportunity to re-scan it before we do.
    484 	 */
    485 	scsipi_adapter_ioctl(chan, SCBUSIOLLSCAN, NULL, 0, curproc);
    486 
    487 	if ((error = scsipi_adapter_addref(chan->chan_adapter)) != 0)
    488 		goto ret;
    489 	for (target = mintarget; target <= maxtarget; target++) {
    490 		if (target == chan->chan_id)
    491 			continue;
    492 
    493 		scsi_discover_luns(sc, target, minlun, maxlun);
    494 
    495 		/*
    496 		 * Now that we've discovered all of the LUNs on this
    497 		 * I_T Nexus, update the xfer mode for all of them
    498 		 * that we know about.
    499 		 */
    500 		scsipi_set_xfer_mode(chan, target, 1);
    501 	}
    502 
    503 	scsipi_adapter_delref(chan->chan_adapter);
    504 ret:
    505 	return (error);
    506 }
    507 
    508 static int
    509 scsibusrescan(device_t sc, const char *ifattr, const int *locators)
    510 {
    511 
    512 	KASSERT(ifattr && !strcmp(ifattr, "scsibus"));
    513 	KASSERT(locators);
    514 
    515 	return (scsi_probe_bus(device_private(sc),
    516 		locators[SCSIBUSCF_TARGET], locators[SCSIBUSCF_LUN]));
    517 }
    518 
    519 static void
    520 scsidevdetached(device_t self, device_t child)
    521 {
    522 	struct scsibus_softc *sc = device_private(self);
    523 	struct scsipi_channel *chan = sc->sc_channel;
    524 	struct scsipi_periph *periph;
    525 	int target, lun;
    526 
    527 	target = device_locator(child, SCSIBUSCF_TARGET);
    528 	lun = device_locator(child, SCSIBUSCF_LUN);
    529 
    530 	mutex_enter(chan_mtx(chan));
    531 
    532 	periph = scsipi_lookup_periph_locked(chan, target, lun);
    533 	KASSERT(periph != NULL && periph->periph_dev == child);
    534 
    535 	scsipi_remove_periph(chan, periph);
    536 	scsipi_free_periph(periph);
    537 
    538 	mutex_exit(chan_mtx(chan));
    539 }
    540 
    541 /*
    542  * Print out autoconfiguration information for a subdevice.
    543  *
    544  * This is a slight abuse of 'standard' autoconfiguration semantics,
    545  * because 'print' functions don't normally print the colon and
    546  * device information.  However, in this case that's better than
    547  * either printing redundant information before the attach message,
    548  * or having the device driver call a special function to print out
    549  * the standard device information.
    550  */
    551 static int
    552 scsibusprint(void *aux, const char *pnp)
    553 {
    554 	struct scsipibus_attach_args *sa = aux;
    555 	struct scsipi_inquiry_pattern *inqbuf;
    556 	u_int8_t type;
    557 	const char *dtype;
    558 	char vendor[33], product[65], revision[17];
    559 	int target, lun;
    560 
    561 	if (pnp != NULL)
    562 		aprint_normal("%s", pnp);
    563 
    564 	inqbuf = &sa->sa_inqbuf;
    565 
    566 	target = sa->sa_periph->periph_target;
    567 	lun = sa->sa_periph->periph_lun;
    568 	type = inqbuf->type & SID_TYPE;
    569 
    570 	dtype = scsipi_dtype(type);
    571 
    572 	strnvisx(vendor, sizeof(vendor), inqbuf->vendor, 8,
    573 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    574 	strnvisx(product, sizeof(product), inqbuf->product, 16,
    575 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    576 	strnvisx(revision, sizeof(revision), inqbuf->revision, 4,
    577 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    578 
    579 	aprint_normal(" target %d lun %d: <%s, %s, %s> %s %s%s",
    580 		      target, lun, vendor, product, revision, dtype,
    581 		      inqbuf->removable ? "removable" : "fixed",
    582 		      (sa->sa_periph->periph_opcs != NULL)
    583 		        ? " timeout-info" : "");
    584 
    585 	return (UNCONF);
    586 }
    587 
    588 static const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
    589 	{{T_DIRECT, T_REMOV,
    590 	 "Apple   ", "iPod            ", ""},	  PQUIRK_START},
    591 	{{T_CDROM, T_REMOV,
    592 	 "CHINON  ", "CD-ROM CDS-431  ", ""},     PQUIRK_NOLUNS},
    593 	{{T_CDROM, T_REMOV,
    594 	 "CHINON  ", "CD-ROM CDS-435  ", ""},     PQUIRK_NOLUNS},
    595 	{{T_CDROM, T_REMOV,
    596 	 "Chinon  ", "CD-ROM CDS-525  ", ""},     PQUIRK_NOLUNS},
    597 	{{T_CDROM, T_REMOV,
    598 	 "CHINON  ", "CD-ROM CDS-535  ", ""},     PQUIRK_NOLUNS},
    599 	{{T_CDROM, T_REMOV,
    600 	 "DEC     ", "RRD42   (C) DEC ", ""},     PQUIRK_NOLUNS},
    601 	{{T_CDROM, T_REMOV,
    602 	 "DENON   ", "DRD-25X         ", "V"},    PQUIRK_NOLUNS},
    603 	{{T_CDROM, T_REMOV,
    604 	 "GENERIC ", "CRD-BP2         ", ""},     PQUIRK_NOLUNS},
    605 	{{T_CDROM, T_REMOV,
    606 	 "HP      ", "C4324/C4325     ", ""},     PQUIRK_NOLUNS},
    607 	{{T_CDROM, T_REMOV,
    608 	 "IMS     ", "CDD521/10       ", "2.06"}, PQUIRK_NOLUNS},
    609 	{{T_CDROM, T_REMOV,
    610 	 "MATSHITA", "CD-ROM CR-5XX   ", "1.0b"}, PQUIRK_NOLUNS},
    611 	{{T_CDROM, T_REMOV,
    612 	 "MEDAVIS ", "RENO CD-ROMX2A  ", ""},     PQUIRK_NOLUNS},
    613 	{{T_CDROM, T_REMOV,
    614 	 "MEDIAVIS", "CDR-H93MV       ", "1.3"},  PQUIRK_NOLUNS},
    615 	{{T_CDROM, T_REMOV,
    616 	 "NEC     ", "CD-ROM DRIVE:502", ""},     PQUIRK_NOLUNS},
    617 	{{T_CDROM, T_REMOV,
    618 	 "NEC     ", "CD-ROM DRIVE:55 ", ""},     PQUIRK_NOLUNS},
    619 	{{T_CDROM, T_REMOV,
    620 	 "NEC     ", "CD-ROM DRIVE:83 ", ""},     PQUIRK_NOLUNS},
    621 	{{T_CDROM, T_REMOV,
    622 	 "NEC     ", "CD-ROM DRIVE:84 ", ""},     PQUIRK_NOLUNS},
    623 	{{T_CDROM, T_REMOV,
    624 	 "NEC     ", "CD-ROM DRIVE:841", ""},     PQUIRK_NOLUNS},
    625         {{T_CDROM, T_REMOV,
    626 	 "OLYMPUS ", "CDS620E         ", "1.1d"},
    627 			       PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOCAPACITY},
    628 	{{T_CDROM, T_REMOV,
    629 	 "PIONEER ", "CD-ROM DR-124X  ", "1.01"}, PQUIRK_NOLUNS},
    630         {{T_CDROM, T_REMOV,
    631          "PLEXTOR ", "CD-ROM PX-4XCS  ", "1.01"},
    632                                PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    633 	{{T_CDROM, T_REMOV,
    634 	 "SONY    ", "CD-ROM CDU-541  ", ""},     PQUIRK_NOLUNS},
    635 	{{T_CDROM, T_REMOV,
    636 	 "SONY    ", "CD-ROM CDU-55S  ", ""},     PQUIRK_NOLUNS},
    637 	{{T_CDROM, T_REMOV,
    638 	 "SONY    ", "CD-ROM CDU-561  ", ""},     PQUIRK_NOLUNS},
    639 	{{T_CDROM, T_REMOV,
    640 	 "SONY    ", "CD-ROM CDU-76S", ""},
    641 				PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    642 	{{T_CDROM, T_REMOV,
    643 	 "SONY    ", "CD-ROM CDU-8003A", ""},     PQUIRK_NOLUNS},
    644 	{{T_CDROM, T_REMOV,
    645 	 "SONY    ", "CD-ROM CDU-8012 ", ""},     PQUIRK_NOLUNS},
    646 	{{T_CDROM, T_REMOV,
    647 	 "TEAC    ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    648 	{{T_CDROM, T_REMOV,
    649 	 "TEAC    ", "CD-ROM CD-56S   ", "1.0B"}, PQUIRK_NOLUNS},
    650 	{{T_CDROM, T_REMOV,
    651 	 "TEXEL   ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    652 	{{T_CDROM, T_REMOV,
    653 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.09"}, PQUIRK_NOLUNS},
    654 	{{T_CDROM, T_REMOV,
    655 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, PQUIRK_NOLUNS},
    656 	{{T_CDROM, T_REMOV,
    657 	 "TOSHIBA ", "XM-4101TASUNSLCD", ""}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    658 	/* "IBM CDRM00201     !F" 0724 is an IBM OEM Toshiba XM-4101BME */
    659 	{{T_CDROM, T_REMOV,
    660 	 "IBM     ", "CDRM00201     !F", "0724"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    661 	{{T_CDROM, T_REMOV,
    662 	 "ShinaKen", "CD-ROM DM-3x1S",   "1.04"}, PQUIRK_NOLUNS},
    663 	{{T_CDROM, T_REMOV,
    664 	 "JVC     ", "R2626",            ""},     PQUIRK_NOLUNS},
    665 	{{T_CDROM, T_REMOV,
    666 	 "YAMAHA", "CRW8424S",           ""},     PQUIRK_NOLUNS},
    667 	{{T_CDROM, T_REMOV,
    668 	 "NEC     ", "CD-ROM DRIVE:222", ""},	  PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    669 
    670 	{{T_DIRECT, T_FIXED,
    671 	 "MICROP  ", "1588-15MBSUN0669", ""},     PQUIRK_AUTOSAVE},
    672 	{{T_DIRECT, T_FIXED,
    673 	 "MICROP  ", "2217-15MQ1091501", ""},     PQUIRK_NOSYNCCACHE},
    674 	{{T_OPTICAL, T_REMOV,
    675 	 "EPSON   ", "OMD-5010        ", "3.08"}, PQUIRK_NOLUNS},
    676 	{{T_DIRECT, T_FIXED,
    677 	 "ADAPTEC ", "AEC-4412BD",       "1.2A"}, PQUIRK_NOMODESENSE},
    678 	{{T_DIRECT, T_FIXED,
    679 	 "ADAPTEC ", "ACB-4000",         ""},     PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE|PQUIRK_NOMODESENSE},
    680 	{{T_DIRECT, T_FIXED,
    681 	 "DEC     ", "RZ55     (C) DEC", ""},     PQUIRK_AUTOSAVE},
    682 	{{T_DIRECT, T_FIXED,
    683 	 "EMULEX  ", "MD21/S2     ESDI", "A00"},
    684 				PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE},
    685 	{{T_DIRECT, T_FIXED,
    686 	 "MICROP",  "1548-15MZ1077801",  "HZ2P"}, PQUIRK_NOTAG},
    687 	{{T_DIRECT, T_FIXED,
    688 	 "HP      ", "C372",             ""},     PQUIRK_NOTAG},
    689 	{{T_DIRECT, T_FIXED,
    690 	 "IBMRAID ", "0662S",		 ""},     PQUIRK_AUTOSAVE},
    691 	{{T_DIRECT, T_FIXED,
    692 	 "IBM     ", "0663H",		 ""},     PQUIRK_AUTOSAVE},
    693 	{{T_DIRECT, T_FIXED,
    694 	 "IBM",	     "0664",		 ""},     PQUIRK_AUTOSAVE},
    695 	{{T_DIRECT, T_FIXED,
    696 	/* improperly report DT-only sync mode */
    697 	 "IBM     ", "DXHS36D",		 ""},
    698 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    699 	{{T_DIRECT, T_FIXED,
    700 	 "IBM     ", "DXHS18Y",		 ""},
    701 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    702 	{{T_DIRECT, T_FIXED,
    703 	 "IBM     ", "H3171-S2",	 ""},
    704 				PQUIRK_NOLUNS|PQUIRK_AUTOSAVE},
    705 	{{T_DIRECT, T_FIXED,
    706 	 "IBM     ", "KZ-C",		 ""},	  PQUIRK_AUTOSAVE},
    707 	/* Broken IBM disk */
    708 	{{T_DIRECT, T_FIXED,
    709 	 ""	   , "DFRSS2F",		 ""},	  PQUIRK_AUTOSAVE},
    710 	{{T_DIRECT, T_FIXED,
    711 	 "Initio  ", "",		 ""},	  PQUIRK_NOBIGMODESENSE},
    712 	{{T_DIRECT, T_FIXED,
    713 	 "JMicron ", "Generic         ", ""},	  PQUIRK_NOFUA},
    714 	{{T_DIRECT, T_REMOV,
    715 	 "MPL     ", "MC-DISK-        ", ""},     PQUIRK_NOLUNS},
    716 	{{T_DIRECT, T_FIXED,
    717 	 "MAXTOR  ", "XT-3280         ", ""},     PQUIRK_NOLUNS},
    718 	{{T_DIRECT, T_FIXED,
    719 	 "MAXTOR  ", "XT-4380S        ", ""},     PQUIRK_NOLUNS},
    720 	{{T_DIRECT, T_FIXED,
    721 	 "MAXTOR  ", "MXT-1240S       ", ""},     PQUIRK_NOLUNS},
    722 	{{T_DIRECT, T_FIXED,
    723 	 "MAXTOR  ", "XT-4170S        ", ""},     PQUIRK_NOLUNS},
    724 	{{T_DIRECT, T_FIXED,
    725 	 "MAXTOR  ", "XT-8760S",         ""},     PQUIRK_NOLUNS},
    726 	{{T_DIRECT, T_FIXED,
    727 	 "MAXTOR  ", "LXT-213S        ", ""},     PQUIRK_NOLUNS},
    728 	{{T_DIRECT, T_FIXED,
    729 	 "MAXTOR  ", "LXT-213S SUN0207", ""},     PQUIRK_NOLUNS},
    730 	{{T_DIRECT, T_FIXED,
    731 	 "MAXTOR  ", "LXT-200S        ", ""},     PQUIRK_NOLUNS},
    732 	{{T_DIRECT, T_FIXED,
    733 	 "MEGADRV ", "EV1000",           ""},     PQUIRK_NOMODESENSE},
    734 	{{T_DIRECT, T_FIXED,
    735 	 "MICROP", "1991-27MZ",          ""},     PQUIRK_NOTAG},
    736 	{{T_DIRECT, T_FIXED,
    737 	 "MST     ", "SnapLink        ", ""},     PQUIRK_NOLUNS},
    738 	{{T_DIRECT, T_FIXED,
    739 	 "NEC     ", "D3847           ", "0307"}, PQUIRK_NOLUNS},
    740 	{{T_CDROM, T_REMOV,
    741 	 "PiSCSI  ", "SCSI CD-ROM     ", ""},     PQUIRK_NOREADDISCINFO},
    742 	{{T_DIRECT, T_FIXED,
    743 	 "QUANTUM ", "ELS85S          ", ""},     PQUIRK_AUTOSAVE},
    744 	{{T_DIRECT, T_FIXED,
    745 	 "QUANTUM ", "LPS525S         ", ""},     PQUIRK_NOLUNS},
    746 	{{T_DIRECT, T_FIXED,
    747 	 "QUANTUM ", "P105S 910-10-94x", ""},     PQUIRK_NOLUNS},
    748 	{{T_DIRECT, T_FIXED,
    749 	 "QUANTUM ", "PD1225S         ", ""},     PQUIRK_NOLUNS},
    750 	{{T_DIRECT, T_FIXED,
    751 	 "QUANTUM ", "PD210S   SUN0207", ""},     PQUIRK_NOLUNS},
    752 	{{T_DIRECT, T_FIXED,
    753 	 "QUANTUM ", "ATLAS IV 9 WLS", "0A0A"},   PQUIRK_CAP_NODT},
    754 	{{T_DIRECT, T_FIXED,
    755 	 "RODIME  ", "RO3000S         ", ""},     PQUIRK_NOLUNS},
    756 	{{T_DIRECT, T_FIXED,
    757 	 "SEAGATE ", "ST125N          ", ""},     PQUIRK_NOLUNS},
    758 	{{T_DIRECT, T_FIXED,
    759 	 "SEAGATE ", "ST157N          ", ""},     PQUIRK_NOLUNS},
    760 	{{T_DIRECT, T_FIXED,
    761 	 "SEAGATE ", "ST296           ", ""},     PQUIRK_NOLUNS},
    762 	{{T_DIRECT, T_FIXED,
    763 	 "SEAGATE ", "ST296N          ", ""},     PQUIRK_NOLUNS},
    764 	{{T_DIRECT, T_FIXED,
    765 	 "SEAGATE ", "ST318404LC      ", ""},     PQUIRK_NOLUNS},
    766 	{{T_DIRECT, T_FIXED,
    767 	 "SEAGATE ", "ST336753LC      ", ""},     PQUIRK_NOLUNS},
    768 	{{T_DIRECT, T_FIXED,
    769 	 "SEAGATE ", "ST336753LW      ", ""},     PQUIRK_NOLUNS},
    770 	{{T_DIRECT, T_FIXED,
    771 	 "SEAGATE ", "ST336754LC      ", ""},     PQUIRK_NOLUNS},
    772 	{{T_DIRECT, T_FIXED,
    773 	 "SEAGATE ", "ST39236LC       ", ""},     PQUIRK_NOLUNS},
    774 	{{T_DIRECT, T_FIXED,
    775 	 "SEAGATE ", "ST15150N        ", ""},     PQUIRK_NOTAG},
    776 	{{T_DIRECT, T_FIXED,
    777 	 "SEAGATE ", "ST19171",          ""},     PQUIRK_NOMODESENSE},
    778 	{{T_DIRECT, T_FIXED,
    779 	 "SEAGATE ", "ST32430N",         ""},     PQUIRK_CAP_SYNC},
    780 	{{T_DIRECT, T_FIXED,
    781 	 "SEAGATE ", "ST34501FC       ", ""},     PQUIRK_NOMODESENSE},
    782 	{{T_DIRECT, T_FIXED,
    783 	 "SEAGATE ", "SX910800N",        ""},     PQUIRK_NOTAG},
    784 	{{T_DIRECT, T_FIXED,
    785 	 "TOSHIBA ", "MK538FB         ", "6027"}, PQUIRK_NOLUNS},
    786 	{{T_DIRECT, T_FIXED,
    787 	 "MICROP  ", "1924",          ""},     PQUIRK_CAP_SYNC},
    788 	{{T_DIRECT, T_FIXED,
    789 	 "FUJITSU ", "M2266",         ""},     PQUIRK_CAP_SYNC},
    790 	{{T_DIRECT, T_FIXED,
    791 	 "FUJITSU ", "M2624S-512      ", ""},     PQUIRK_CAP_SYNC},
    792 	{{T_DIRECT, T_FIXED,
    793 	 "SEAGATE ", "SX336704LC"   , ""}, PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
    794 	{{T_DIRECT, T_FIXED,
    795 	 "SEAGATE ", "SX173404LC",       ""},     PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
    796 	{{T_DIRECT, T_FIXED,
    797 	 "ORACLE",   "BlockVolume",	 ""},	  PQUIRK_ONLYBIG},
    798 
    799 	{{T_DIRECT, T_REMOV,
    800 	 "IOMEGA", "ZIP 100",		 "J.03"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    801 	{{T_DIRECT, T_REMOV,
    802 	 "INSITE", "I325VM",             ""},     PQUIRK_NOLUNS},
    803 
    804 	/* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
    805 	{{T_SEQUENTIAL, T_REMOV,
    806 	 "        ", "                ", "    "}, PQUIRK_NOLUNS},
    807 	{{T_SEQUENTIAL, T_REMOV,
    808 	 "EMULEX  ", "MT-02 QIC       ", ""},     PQUIRK_NOLUNS},
    809 	{{T_SEQUENTIAL, T_REMOV,
    810 	 "CALIPER ", "CP150           ", ""},     PQUIRK_NOLUNS},
    811 	{{T_SEQUENTIAL, T_REMOV,
    812 	 "EXABYTE ", "EXB-8200        ", ""},     PQUIRK_NOLUNS},
    813 	{{T_SEQUENTIAL, T_REMOV,
    814 	 "SONY    ", "GY-10C          ", ""},     PQUIRK_NOLUNS},
    815 	{{T_SEQUENTIAL, T_REMOV,
    816 	 "SONY    ", "SDT-2000        ", "2.09"}, PQUIRK_NOLUNS},
    817 	{{T_SEQUENTIAL, T_REMOV,
    818 	 "SONY    ", "SDT-5000        ", "3."},   PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    819 	{{T_SEQUENTIAL, T_REMOV,
    820 	 "SONY    ", "SDT-5200        ", "3."},   PQUIRK_NOLUNS},
    821 	{{T_SEQUENTIAL, T_REMOV,
    822 	 "TANDBERG", " TDC 3600       ", ""},     PQUIRK_NOLUNS},
    823 	/* Following entry reported as a Tandberg 3600; ref. PR1933 */
    824 	{{T_SEQUENTIAL, T_REMOV,
    825 	 "ARCHIVE ", "VIPER 150  21247", ""},     PQUIRK_NOLUNS},
    826 	/* Following entry for a Cipher ST150S; ref. PR4171 */
    827 	{{T_SEQUENTIAL, T_REMOV,
    828 	 "ARCHIVE ", "VIPER 1500 21247", "2.2G"}, PQUIRK_NOLUNS},
    829 	{{T_SEQUENTIAL, T_REMOV,
    830 	 "ARCHIVE ", "Python 28454-XXX", ""},     PQUIRK_NOLUNS},
    831 	{{T_SEQUENTIAL, T_REMOV,
    832 	 "WANGTEK ", "5099ES SCSI",      ""},     PQUIRK_NOLUNS},
    833 	{{T_SEQUENTIAL, T_REMOV,
    834 	 "WANGTEK ", "5150ES SCSI",      ""},     PQUIRK_NOLUNS},
    835 	{{T_SEQUENTIAL, T_REMOV,
    836 	 "WANGTEK ", "SCSI-36",		 ""},     PQUIRK_NOLUNS},
    837 	{{T_SEQUENTIAL, T_REMOV,
    838 	 "WangDAT ", "Model 1300      ", "02.4"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    839 	{{T_SEQUENTIAL, T_REMOV,
    840 	 "WangDAT ", "Model 2600      ", "01.7"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    841 	{{T_SEQUENTIAL, T_REMOV,
    842 	 "WangDAT ", "Model 3200      ", "02.2"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    843 	{{T_SEQUENTIAL, T_REMOV,
    844 	 "TEAC    ", "MT-2ST/N50      ", ""},     PQUIRK_NOLUNS},
    845 
    846 	{{T_SCANNER, T_FIXED,
    847 	 "RICOH   ", "IS60            ", "1R08"}, PQUIRK_NOLUNS},
    848 	{{T_SCANNER, T_FIXED,
    849 	 "UMAX    ", "Astra 1200S     ", "V2.9"}, PQUIRK_NOLUNS},
    850 	{{T_SCANNER, T_FIXED,
    851 	 "UMAX    ", "Astra 1220S     ", ""},     PQUIRK_NOLUNS},
    852 	{{T_SCANNER, T_FIXED,
    853 	 "UMAX    ", "UMAX S-6E       ", "V2.0"}, PQUIRK_NOLUNS},
    854 	{{T_SCANNER, T_FIXED,
    855 	 "UMAX    ", "UMAX S-12       ", "V2.1"}, PQUIRK_NOLUNS},
    856 	{{T_SCANNER, T_FIXED,
    857 	 "ULTIMA  ", "A6000C          ", ""},     PQUIRK_NOLUNS},
    858 	{{T_PROCESSOR, T_FIXED,
    859 	 "ESG-SHV",  "SCA HSBP M15",     ""},     PQUIRK_NOLUNS},
    860 	{{T_PROCESSOR, T_FIXED,
    861 	 "SYMBIOS",  "",                 ""},     PQUIRK_NOLUNS},
    862 	{{T_PROCESSOR, T_FIXED,
    863 	 "LITRONIC", "PCMCIA          ", ""},     PQUIRK_NOLUNS},
    864 	{{T_CHANGER, T_REMOV,
    865 	 "SONY    ", "CDL1100         ", ""},     PQUIRK_NOLUNS},
    866 	{{T_ENCLOSURE, T_FIXED,
    867 	 "SUN     ", "SENA            ", ""},     PQUIRK_NOLUNS},
    868 	{{T_CDROM, T_REMOV,
    869 	 "SUN     ", "Virtual CDROM   ", ""},     PQUIRK_NOREADDISCINFO},
    870 };
    871 
    872 /*
    873  * given a target and lun, ask the device what
    874  * it is, and find the correct driver table
    875  * entry.
    876  */
    877 static int
    878 scsi_probe_device(struct scsibus_softc *sc, int target, int lun)
    879 {
    880 	struct scsipi_channel *chan = sc->sc_channel;
    881 	struct scsipi_periph *periph;
    882 	struct scsipi_inquiry_data inqbuf;
    883 	const struct scsi_quirk_inquiry_pattern *finger;
    884 	int checkdtype, priority, docontinue, quirks;
    885 	struct scsipibus_attach_args sa;
    886 	cfdata_t cf;
    887 	int locs[SCSIBUSCF_NLOCS];
    888 
    889 	/*
    890 	 * Assume no more LUNs to search after this one.
    891 	 * If we successfully get Inquiry data and after
    892 	 * merging quirks we find we can probe for more
    893 	 * LUNs, we will.
    894 	 */
    895 	docontinue = 0;
    896 
    897 	/* Skip this slot if it is already attached. */
    898 	if (scsipi_lookup_periph(chan, target, lun) != NULL)
    899 		return (docontinue);
    900 
    901 	periph = scsipi_alloc_periph(M_WAITOK);
    902 	periph->periph_channel = chan;
    903 	periph->periph_switch = &scsi_probe_dev;
    904 
    905 	periph->periph_target = target;
    906 	periph->periph_lun = lun;
    907 	periph->periph_quirks = chan->chan_defquirks;
    908 
    909 #ifdef SCSIPI_DEBUG
    910 	if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_SCSI &&
    911 	    SCSIPI_DEBUG_TARGET == target &&
    912 	    SCSIPI_DEBUG_LUN == lun)
    913 		periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
    914 #endif
    915 
    916 	/*
    917 	 * Ask the device what it is
    918 	 */
    919 
    920 #ifdef SCSI_2_DEF
    921 	/* some devices need to be told to go to SCSI2 */
    922 	/* However some just explode if you tell them this.. leave it out */
    923 	scsi_change_def(periph, XS_CTL_DISCOVERY | XS_CTL_SILENT);
    924 #endif /* SCSI_2_DEF */
    925 
    926 	/* Now go ask the device all about itself. */
    927 	memset(&inqbuf, 0, sizeof(inqbuf));
    928 	{
    929 		u_int8_t *extension = &inqbuf.flags1;
    930 		int len = 0;
    931 		while (len < 3)
    932 			extension[len++] = '\0';
    933 		while (len < 3 + 28)
    934 			extension[len++] = ' ';
    935 		while (len < 3 + 28 + 20)
    936 			extension[len++] = '\0';
    937 		while (len < 3 + 28 + 20 + 1)
    938 			extension[len++] = '\0';
    939 		while (len < 3 + 28 + 20 + 1 + 1)
    940 			extension[len++] = '\0';
    941 		while (len < 3 + 28 + 20 + 1 + 1 + (8*2))
    942 			extension[len++] = ' ';
    943 	}
    944 	if (scsipi_inquire(periph, &inqbuf, XS_CTL_DISCOVERY | XS_CTL_SILENT))
    945 		goto bad;
    946 
    947 	periph->periph_type = inqbuf.device & SID_TYPE;
    948 	if (inqbuf.dev_qual2 & SID_REMOVABLE)
    949 		periph->periph_flags |= PERIPH_REMOVABLE;
    950 	periph->periph_version = inqbuf.version & SID_ANSII;
    951 
    952 	/*
    953 	 * Any device qualifier that has the top bit set (qualifier&4 != 0)
    954 	 * is vendor specific and won't match in this switch.
    955 	 * All we do here is throw out bad/negative responses.
    956 	 */
    957 	checkdtype = 0;
    958 	switch (inqbuf.device & SID_QUAL) {
    959 	case SID_QUAL_LU_PRESENT:
    960 		checkdtype = 1;
    961 		break;
    962 
    963 	case SID_QUAL_LU_NOTPRESENT:
    964 	case SID_QUAL_reserved:
    965 	case SID_QUAL_LU_NOT_SUPP:
    966 		goto bad;
    967 
    968 	default:
    969 		break;
    970 	}
    971 
    972 	/* Let the adapter driver handle the device separately if it wants. */
    973 	if (chan->chan_adapter->adapt_accesschk != NULL &&
    974 	    (*chan->chan_adapter->adapt_accesschk)(periph, &sa.sa_inqbuf))
    975 		goto bad;
    976 
    977 	if (checkdtype) {
    978 		switch (periph->periph_type) {
    979 		case T_DIRECT:
    980 		case T_SEQUENTIAL:
    981 		case T_PRINTER:
    982 		case T_PROCESSOR:
    983 		case T_WORM:
    984 		case T_CDROM:
    985 		case T_SCANNER:
    986 		case T_OPTICAL:
    987 		case T_CHANGER:
    988 		case T_COMM:
    989 		case T_IT8_1:
    990 		case T_IT8_2:
    991 		case T_STORARRAY:
    992 		case T_ENCLOSURE:
    993 		case T_SIMPLE_DIRECT:
    994 		case T_OPTIC_CARD_RW:
    995 		case T_OBJECT_STORED:
    996 		default:
    997 			break;
    998 		case T_NODEVICE:
    999 			goto bad;
   1000 		}
   1001 	}
   1002 
   1003 	sa.sa_periph = periph;
   1004 	sa.sa_inqbuf.type = inqbuf.device;
   1005 	sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
   1006 	    T_REMOV : T_FIXED;
   1007 	sa.sa_inqbuf.vendor = inqbuf.vendor;
   1008 	sa.sa_inqbuf.product = inqbuf.product;
   1009 	sa.sa_inqbuf.revision = inqbuf.revision;
   1010 	sa.scsipi_info.scsi_version = inqbuf.version;
   1011 	sa.sa_inqptr = &inqbuf;
   1012 
   1013 	finger = scsipi_inqmatch(
   1014 	    &sa.sa_inqbuf, scsi_quirk_patterns,
   1015 	    sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
   1016 	    sizeof(scsi_quirk_patterns[0]), &priority);
   1017 
   1018 	if (finger != NULL)
   1019 		quirks = finger->quirks;
   1020 	else
   1021 		quirks = 0;
   1022 
   1023 	/*
   1024 	 * Determine the operating mode capabilities of the device.
   1025 	 */
   1026 	if (periph->periph_version >= 2) {
   1027 		if ((inqbuf.flags3 & SID_CmdQue) != 0 &&
   1028 		    (quirks & PQUIRK_NOTAG) == 0)
   1029 			periph->periph_cap |= PERIPH_CAP_TQING;
   1030 		if ((inqbuf.flags3 & SID_Linked) != 0)
   1031 			periph->periph_cap |= PERIPH_CAP_LINKCMDS;
   1032 		if ((inqbuf.flags3 & SID_Sync) != 0 &&
   1033 		    (quirks & PQUIRK_NOSYNC) == 0)
   1034 			periph->periph_cap |= PERIPH_CAP_SYNC;
   1035 		if ((inqbuf.flags3 & SID_WBus16) != 0 &&
   1036 		    (quirks & PQUIRK_NOWIDE) == 0)
   1037 			periph->periph_cap |= PERIPH_CAP_WIDE16;
   1038 		if ((inqbuf.flags3 & SID_WBus32) != 0 &&
   1039 		    (quirks & PQUIRK_NOWIDE) == 0)
   1040 			periph->periph_cap |= PERIPH_CAP_WIDE32;
   1041 		if ((inqbuf.flags3 & SID_SftRe) != 0)
   1042 			periph->periph_cap |= PERIPH_CAP_SFTRESET;
   1043 		if ((inqbuf.flags3 & SID_RelAdr) != 0)
   1044 			periph->periph_cap |= PERIPH_CAP_RELADR;
   1045 		/* SPC-2 */
   1046 		if (periph->periph_version >= 3 &&
   1047 		    !(quirks & PQUIRK_CAP_NODT)){
   1048 			/*
   1049 			 * Report ST clocking though CAP_WIDExx/CAP_SYNC.
   1050 			 * If the device only supports DT, clear these
   1051 			 * flags (DT implies SYNC and WIDE)
   1052 			 */
   1053 			switch (inqbuf.flags4 & SID_Clocking) {
   1054 			case SID_CLOCKING_DT_ONLY:
   1055 				periph->periph_cap &=
   1056 				    ~(PERIPH_CAP_SYNC |
   1057 				      PERIPH_CAP_WIDE16 |
   1058 				      PERIPH_CAP_WIDE32);
   1059 				/* FALLTHROUGH */
   1060 			case SID_CLOCKING_SD_DT:
   1061 				periph->periph_cap |= PERIPH_CAP_DT;
   1062 				break;
   1063 			default: /* ST only or invalid */
   1064 				/* nothing to do */
   1065 				break;
   1066 			}
   1067 		}
   1068 		if (periph->periph_version >= 3) {
   1069 			if (inqbuf.flags4 & SID_IUS)
   1070 				periph->periph_cap |= PERIPH_CAP_IUS;
   1071 			if (inqbuf.flags4 & SID_QAS)
   1072 				periph->periph_cap |= PERIPH_CAP_QAS;
   1073 		}
   1074 	}
   1075 	if (quirks & PQUIRK_CAP_SYNC)
   1076 		periph->periph_cap |= PERIPH_CAP_SYNC;
   1077 	if (quirks & PQUIRK_CAP_WIDE16)
   1078 		periph->periph_cap |= PERIPH_CAP_WIDE16;
   1079 
   1080 	/*
   1081 	 * Now apply any quirks from the table.
   1082 	 */
   1083 	periph->periph_quirks |= quirks;
   1084 	if (periph->periph_version == 0 &&
   1085 	    (periph->periph_quirks & PQUIRK_FORCELUNS) == 0)
   1086 		periph->periph_quirks |= PQUIRK_NOLUNS;
   1087 
   1088 	if ((periph->periph_quirks & PQUIRK_NOLUNS) == 0)
   1089 		docontinue = 1;
   1090 
   1091 	locs[SCSIBUSCF_TARGET] = target;
   1092 	locs[SCSIBUSCF_LUN] = lun;
   1093 
   1094 	KERNEL_LOCK(1, NULL);
   1095 	if ((cf = config_search(sc->sc_dev, &sa,
   1096 				CFARGS(.submatch = config_stdsubmatch,
   1097 				       .locators = locs))) != NULL) {
   1098 		scsipi_insert_periph(chan, periph);
   1099 
   1100 		/*
   1101 		 * Determine supported opcodes and timeouts if available.
   1102 		 * Only do this on peripherals reporting SCSI version 3
   1103 		 * or greater - this command isn't in the SCSI-2 spec. and
   1104 		 * it causes either timeouts or peripherals disappearing
   1105 		 * when sent to some SCSI-1 or SCSI-2 peripherals.
   1106 		 */
   1107 		if (periph->periph_version >= 3)
   1108 			scsipi_get_opcodeinfo(periph);
   1109 
   1110 		/*
   1111 		 * XXX Can't assign periph_dev here, because we'll
   1112 		 * XXX need it before config_attach() returns.  Must
   1113 		 * XXX assign it in periph driver.
   1114 		 */
   1115 		config_attach(sc->sc_dev, cf, &sa, scsibusprint,
   1116 		    CFARGS(.locators = locs));
   1117 		KERNEL_UNLOCK_ONE(NULL);
   1118 	} else {
   1119 		scsibusprint(&sa, device_xname(sc->sc_dev));
   1120 		aprint_normal(" not configured\n");
   1121 		KERNEL_UNLOCK_ONE(NULL);
   1122 		goto bad;
   1123 	}
   1124 
   1125 	return (docontinue);
   1126 
   1127 bad:
   1128 	scsipi_free_periph(periph);
   1129 	return (docontinue);
   1130 }
   1131 
   1132 /****** Entry points for user control of the SCSI bus. ******/
   1133 
   1134 static int
   1135 scsibusopen(dev_t dev, int flag, int fmt,
   1136     struct lwp *l)
   1137 {
   1138 	struct scsibus_softc *sc;
   1139 	int error, unit = minor(dev);
   1140 
   1141 	sc = device_lookup_private(&scsibus_cd, unit);
   1142 	if (sc == NULL)
   1143 		return (ENXIO);
   1144 
   1145 	if (sc->sc_flags & SCSIBUSF_OPEN)
   1146 		return (EBUSY);
   1147 
   1148 	if ((error = scsipi_adapter_addref(sc->sc_channel->chan_adapter)) != 0)
   1149 		return (error);
   1150 
   1151 	sc->sc_flags |= SCSIBUSF_OPEN;
   1152 
   1153 	return (0);
   1154 }
   1155 
   1156 static int
   1157 scsibusclose(dev_t dev, int flag, int fmt,
   1158     struct lwp *l)
   1159 {
   1160 	struct scsibus_softc *sc;
   1161 
   1162 	sc = device_lookup_private(&scsibus_cd, minor(dev));
   1163 	scsipi_adapter_delref(sc->sc_channel->chan_adapter);
   1164 
   1165 	sc->sc_flags &= ~SCSIBUSF_OPEN;
   1166 
   1167 	return (0);
   1168 }
   1169 
   1170 static int
   1171 scsibusioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
   1172 {
   1173 	struct scsibus_softc *sc;
   1174 	struct scsipi_channel *chan;
   1175 	int error;
   1176 
   1177 	sc = device_lookup_private(&scsibus_cd, minor(dev));
   1178 	chan = sc->sc_channel;
   1179 
   1180 	/*
   1181 	 * Enforce write permission for ioctls that change the
   1182 	 * state of the bus.  Host adapter specific ioctls must
   1183 	 * be checked by the adapter driver.
   1184 	 */
   1185 	switch (cmd) {
   1186 	case SCBUSIOSCAN:
   1187 	case SCBUSIODETACH:
   1188 	case SCBUSIORESET:
   1189 		if ((flag & FWRITE) == 0)
   1190 			return (EBADF);
   1191 	}
   1192 
   1193 	switch (cmd) {
   1194 	case SCBUSIOSCAN:
   1195 	    {
   1196 		struct scbusioscan_args *a =
   1197 		    (struct scbusioscan_args *)addr;
   1198 
   1199 		error = scsi_probe_bus(sc, a->sa_target, a->sa_lun);
   1200 		break;
   1201 	    }
   1202 
   1203 	case SCBUSIODETACH:
   1204 	    {
   1205 		struct scbusiodetach_args *a =
   1206 		    (struct scbusiodetach_args *)addr;
   1207 
   1208 		error = scsipi_target_detach(chan, a->sa_target, a->sa_lun, 0);
   1209 		break;
   1210 	    }
   1211 
   1212 
   1213 	case SCBUSIORESET:
   1214 		/* FALLTHROUGH */
   1215 	default:
   1216 		error = scsipi_adapter_ioctl(chan, cmd, addr, flag, l->l_proc);
   1217 		break;
   1218 	}
   1219 
   1220 	return (error);
   1221 }
   1222