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scsiconf.c revision 1.275
      1 /*	$NetBSD: scsiconf.c,v 1.275 2016/06/26 07:31:35 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 1.275 2016/06/26 07:31:35 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 
     67 #include <dev/scsipi/scsi_all.h>
     68 #include <dev/scsipi/scsipi_all.h>
     69 #include <dev/scsipi/scsiconf.h>
     70 
     71 #include "locators.h"
     72 
     73 static const struct scsipi_periphsw scsi_probe_dev = {
     74 	NULL,
     75 	NULL,
     76 	NULL,
     77 	NULL,
     78 };
     79 
     80 struct scsi_initq {
     81 	struct scsipi_channel *sc_channel;
     82 	TAILQ_ENTRY(scsi_initq) scsi_initq;
     83 };
     84 
     85 static ONCE_DECL(scsi_conf_ctrl);
     86 static TAILQ_HEAD(, scsi_initq)	scsi_initq_head;
     87 static kmutex_t			scsibus_qlock;
     88 static kcondvar_t		scsibus_qcv;
     89 
     90 static int	scsi_probe_device(struct scsibus_softc *, int, int);
     91 
     92 static int	scsibusmatch(device_t, cfdata_t, void *);
     93 static void	scsibusattach(device_t, device_t, void *);
     94 static int	scsibusdetach(device_t, int flags);
     95 static int	scsibusrescan(device_t, const char *, const int *);
     96 static void	scsidevdetached(device_t, device_t);
     97 
     98 CFATTACH_DECL3_NEW(scsibus, sizeof(struct scsibus_softc),
     99     scsibusmatch, scsibusattach, scsibusdetach, NULL,
    100     scsibusrescan, scsidevdetached, DVF_DETACH_SHUTDOWN);
    101 
    102 extern struct cfdriver scsibus_cd;
    103 
    104 static dev_type_open(scsibusopen);
    105 static dev_type_close(scsibusclose);
    106 static dev_type_ioctl(scsibusioctl);
    107 
    108 const struct cdevsw scsibus_cdevsw = {
    109 	.d_open = scsibusopen,
    110 	.d_close = scsibusclose,
    111 	.d_read = noread,
    112 	.d_write = nowrite,
    113 	.d_ioctl = scsibusioctl,
    114 	.d_stop = nostop,
    115 	.d_tty = notty,
    116 	.d_poll = nopoll,
    117 	.d_mmap = nommap,
    118 	.d_kqfilter = nokqfilter,
    119 	.d_discard = nodiscard,
    120 	.d_flag = D_OTHER
    121 };
    122 
    123 static int	scsibusprint(void *, const char *);
    124 static void	scsibus_discover_thread(void *);
    125 static void	scsibus_config(struct scsibus_softc *);
    126 
    127 const struct scsipi_bustype scsi_bustype = {
    128 	SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI, SCSIPI_BUSTYPE_SCSI_PSCSI),
    129 	scsi_scsipi_cmd,
    130 	scsipi_interpret_sense,
    131 	scsi_print_addr,
    132 	scsi_kill_pending,
    133 	scsi_async_event_xfer_mode,
    134 };
    135 
    136 const struct scsipi_bustype scsi_fc_bustype = {
    137 	SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI, SCSIPI_BUSTYPE_SCSI_FC),
    138 	scsi_scsipi_cmd,
    139 	scsipi_interpret_sense,
    140 	scsi_print_addr,
    141 	scsi_kill_pending,
    142 	scsi_fc_sas_async_event_xfer_mode,
    143 };
    144 
    145 const struct scsipi_bustype scsi_sas_bustype = {
    146 	SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI, SCSIPI_BUSTYPE_SCSI_SAS),
    147 	scsi_scsipi_cmd,
    148 	scsipi_interpret_sense,
    149 	scsi_print_addr,
    150 	scsi_kill_pending,
    151 	scsi_fc_sas_async_event_xfer_mode,
    152 };
    153 
    154 const struct scsipi_bustype scsi_usb_bustype = {
    155 	SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI, SCSIPI_BUSTYPE_SCSI_USB),
    156 	scsi_scsipi_cmd,
    157 	scsipi_interpret_sense,
    158 	scsi_print_addr,
    159 	scsi_kill_pending,
    160 	NULL,
    161 };
    162 
    163 static int
    164 scsibus_init(void)
    165 {
    166 
    167 	TAILQ_INIT(&scsi_initq_head);
    168 	mutex_init(&scsibus_qlock, MUTEX_DEFAULT, IPL_NONE);
    169 	cv_init(&scsibus_qcv, "scsinitq");
    170 	return 0;
    171 }
    172 
    173 int
    174 scsiprint(void *aux, const char *pnp)
    175 {
    176 	struct scsipi_channel *chan = aux;
    177 	struct scsipi_adapter *adapt = chan->chan_adapter;
    178 
    179 	/* only "scsibus"es can attach to "scsi"s; easy. */
    180 	if (pnp)
    181 		aprint_normal("scsibus at %s", pnp);
    182 
    183 	/* don't print channel if the controller says there can be only one. */
    184 	if (adapt->adapt_nchannels != 1)
    185 		aprint_normal(" channel %d", chan->chan_channel);
    186 
    187 	return (UNCONF);
    188 }
    189 
    190 static int
    191 scsibusmatch(device_t parent, cfdata_t cf, void *aux)
    192 {
    193 	struct scsipi_channel *chan = aux;
    194 
    195 	if (SCSIPI_BUSTYPE_TYPE(chan->chan_bustype->bustype_type) !=
    196 	    SCSIPI_BUSTYPE_SCSI)
    197 		return 0;
    198 
    199 	if (cf->cf_loc[SCSICF_CHANNEL] != chan->chan_channel &&
    200 	    cf->cf_loc[SCSICF_CHANNEL] != SCSICF_CHANNEL_DEFAULT)
    201 		return (0);
    202 
    203 	return (1);
    204 }
    205 
    206 static void
    207 scsibusattach(device_t parent, device_t self, void *aux)
    208 {
    209 	struct scsibus_softc *sc = device_private(self);
    210 	struct scsipi_channel *chan = aux;
    211 	struct scsi_initq *scsi_initq;
    212 
    213 	if (!pmf_device_register(self, NULL, NULL))
    214 		aprint_error_dev(self, "couldn't establish power handler\n");
    215 
    216 	sc->sc_dev = self;
    217 	sc->sc_channel = chan;
    218 	chan->chan_name = device_xname(sc->sc_dev);
    219 
    220 	aprint_naive(": SCSI bus\n");
    221 	aprint_normal(": %d target%s, %d lun%s per target\n",
    222 	    chan->chan_ntargets,
    223 	    chan->chan_ntargets == 1 ? "" : "s",
    224 	    chan->chan_nluns,
    225 	    chan->chan_nluns == 1 ? "" : "s");
    226 
    227 	/*
    228 	 * XXX
    229 	 * newer adapters support more than 256 outstanding commands
    230 	 * per periph and don't use the tag (they eventually allocate one
    231 	 * internally). Right now scsipi always allocate a tag and
    232 	 * is limited to 256 tags, per scsi specs.
    233 	 * this should be revisited
    234 	 */
    235 	if (chan->chan_flags & SCSIPI_CHAN_OPENINGS) {
    236 		if (chan->chan_max_periph > 256)
    237 			chan->chan_max_periph = 256;
    238 	} else {
    239 		if (chan->chan_adapter->adapt_max_periph > 256)
    240 			chan->chan_adapter->adapt_max_periph = 256;
    241 	}
    242 
    243 	if (scsipi_adapter_addref(chan->chan_adapter))
    244 		return;
    245 
    246 	RUN_ONCE(&scsi_conf_ctrl, scsibus_init);
    247 
    248 	/* Initialize the channel structure first */
    249 	chan->chan_init_cb = NULL;
    250 	chan->chan_init_cb_arg = NULL;
    251 
    252 	scsi_initq = malloc(sizeof(struct scsi_initq), M_DEVBUF, M_WAITOK);
    253 	scsi_initq->sc_channel = chan;
    254 	TAILQ_INSERT_TAIL(&scsi_initq_head, scsi_initq, scsi_initq);
    255         config_pending_incr(sc->sc_dev);
    256 	if (scsipi_channel_init(chan)) {
    257 		aprint_error_dev(sc->sc_dev, "failed to init channel\n");
    258 		return;
    259 	}
    260 
    261         /*
    262          * Create the discover thread
    263          */
    264         if (kthread_create(PRI_NONE, 0, NULL, scsibus_discover_thread, sc,
    265             NULL, "%s-d", chan->chan_name)) {
    266                 aprint_error_dev(sc->sc_dev, "unable to create discovery "
    267 		    "thread for channel %d\n", chan->chan_channel);
    268                 return;
    269         }
    270 }
    271 
    272 static void
    273 scsibus_discover_thread(void *arg)
    274 {
    275 	struct scsibus_softc *sc = arg;
    276 
    277 	scsibus_config(sc);
    278 	kthread_exit(0);
    279 }
    280 
    281 static void
    282 scsibus_config(struct scsibus_softc *sc)
    283 {
    284 	struct scsipi_channel *chan = sc->sc_channel;
    285 	struct scsi_initq *scsi_initq;
    286 
    287 #ifndef SCSI_DELAY
    288 #define SCSI_DELAY 2
    289 #endif
    290 	if ((chan->chan_flags & SCSIPI_CHAN_NOSETTLE) == 0 &&
    291 	    SCSI_DELAY > 0) {
    292 		aprint_normal_dev(sc->sc_dev,
    293 		    "waiting %d seconds for devices to settle...\n",
    294 		    SCSI_DELAY);
    295 		/* ...an identifier we know no one will use... */
    296 		(void) tsleep(scsibus_config, PRIBIO,
    297 		    "scsidly", SCSI_DELAY * hz);
    298 	}
    299 
    300 	/* Make sure the devices probe in scsibus order to avoid jitter. */
    301 	mutex_enter(&scsibus_qlock);
    302 	for (;;) {
    303 		scsi_initq = TAILQ_FIRST(&scsi_initq_head);
    304 		if (scsi_initq->sc_channel == chan)
    305 			break;
    306 		cv_wait(&scsibus_qcv, &scsibus_qlock);
    307 	}
    308 	mutex_exit(&scsibus_qlock);
    309 
    310 	scsi_probe_bus(sc, -1, -1);
    311 
    312 	mutex_enter(&scsibus_qlock);
    313 	TAILQ_REMOVE(&scsi_initq_head, scsi_initq, scsi_initq);
    314 	cv_broadcast(&scsibus_qcv);
    315 	mutex_exit(&scsibus_qlock);
    316 
    317 	free(scsi_initq, M_DEVBUF);
    318 
    319 	scsipi_adapter_delref(chan->chan_adapter);
    320 
    321 	config_pending_decr(sc->sc_dev);
    322 }
    323 
    324 static int
    325 scsibusdetach(device_t self, int flags)
    326 {
    327 	struct scsibus_softc *sc = device_private(self);
    328 	struct scsipi_channel *chan = sc->sc_channel;
    329 	struct scsipi_periph *periph;
    330 	int ctarget, clun;
    331 	struct scsipi_xfer *xs;
    332 	int error;
    333 
    334 	/* XXXSMP scsipi */
    335 	KERNEL_LOCK(1, curlwp);
    336 
    337 	/*
    338 	 * Detach all of the periphs.
    339 	 */
    340 	if ((error = scsipi_target_detach(chan, -1, -1, flags)) != 0) {
    341 		/* XXXSMP scsipi */
    342 		KERNEL_UNLOCK_ONE(curlwp);
    343 
    344 		return error;
    345 	}
    346 
    347 	pmf_device_deregister(self);
    348 
    349 	/*
    350 	 * Process outstanding commands (which will never complete as the
    351 	 * controller is gone).
    352 	 *
    353 	 * XXX Surely this is redundant?  If we get this far, the
    354 	 * XXX peripherals have all been detached.
    355 	 */
    356 	for (ctarget = 0; ctarget < chan->chan_ntargets; ctarget++) {
    357 		if (ctarget == chan->chan_id)
    358 			continue;
    359 		for (clun = 0; clun < chan->chan_nluns; clun++) {
    360 			periph = scsipi_lookup_periph(chan, ctarget, clun);
    361 			if (periph == NULL)
    362 				continue;
    363 			TAILQ_FOREACH(xs, &periph->periph_xferq, device_q) {
    364 				callout_stop(&xs->xs_callout);
    365 				xs->error = XS_DRIVER_STUFFUP;
    366 				scsipi_done(xs);
    367 			}
    368 		}
    369 	}
    370 
    371 	/*
    372 	 * Now shut down the channel.
    373 	 */
    374 	scsipi_channel_shutdown(chan);
    375 
    376 	/* XXXSMP scsipi */
    377 	KERNEL_UNLOCK_ONE(curlwp);
    378 
    379 	return 0;
    380 }
    381 
    382 /*
    383  * Probe the requested scsi bus. It must be already set up.
    384  * target and lun optionally narrow the search if not -1
    385  */
    386 int
    387 scsi_probe_bus(struct scsibus_softc *sc, int target, int lun)
    388 {
    389 	struct scsipi_channel *chan = sc->sc_channel;
    390 	int maxtarget, mintarget, maxlun, minlun;
    391 	int error;
    392 
    393 	/* XXXSMP scsipi */
    394 	KERNEL_LOCK(1, curlwp);
    395 
    396 	if (target == -1) {
    397 		maxtarget = chan->chan_ntargets - 1;
    398 		mintarget = 0;
    399 	} else {
    400 		if (target < 0 || target >= chan->chan_ntargets)
    401 			return (EINVAL);
    402 		maxtarget = mintarget = target;
    403 	}
    404 
    405 	if (lun == -1) {
    406 		maxlun = chan->chan_nluns - 1;
    407 		minlun = 0;
    408 	} else {
    409 		if (lun < 0 || lun >= chan->chan_nluns)
    410 			return (EINVAL);
    411 		maxlun = minlun = lun;
    412 	}
    413 
    414 	/*
    415 	 * Some HBAs provide an abstracted view of the bus; give them an
    416 	 * oppertunity to re-scan it before we do.
    417 	 */
    418 	if (chan->chan_adapter->adapt_ioctl != NULL)
    419 		(*chan->chan_adapter->adapt_ioctl)(chan, SCBUSIOLLSCAN, NULL,
    420 		    0, curproc);
    421 
    422 	if ((error = scsipi_adapter_addref(chan->chan_adapter)) != 0)
    423 		goto ret;
    424 	for (target = mintarget; target <= maxtarget; target++) {
    425 		if (target == chan->chan_id)
    426 			continue;
    427 		for (lun = minlun; lun <= maxlun; lun++) {
    428 			/*
    429 			 * See if there's a device present, and configure it.
    430 			 */
    431 			if (scsi_probe_device(sc, target, lun) == 0)
    432 				break;
    433 			/* otherwise something says we should look further */
    434 		}
    435 
    436 		/*
    437 		 * Now that we've discovered all of the LUNs on this
    438 		 * I_T Nexus, update the xfer mode for all of them
    439 		 * that we know about.
    440 		 */
    441 		scsipi_set_xfer_mode(chan, target, 1);
    442 	}
    443 	scsipi_adapter_delref(chan->chan_adapter);
    444 ret:
    445 	KERNEL_UNLOCK_ONE(curlwp);
    446 	return (error);
    447 }
    448 
    449 static int
    450 scsibusrescan(device_t sc, const char *ifattr,
    451     const int *locators)
    452 {
    453 
    454 	KASSERT(ifattr && !strcmp(ifattr, "scsibus"));
    455 	KASSERT(locators);
    456 
    457 	return (scsi_probe_bus(device_private(sc),
    458 		locators[SCSIBUSCF_TARGET], locators[SCSIBUSCF_LUN]));
    459 }
    460 
    461 static void
    462 scsidevdetached(device_t self, device_t child)
    463 {
    464 	struct scsibus_softc *sc = device_private(self);
    465 	struct scsipi_channel *chan = sc->sc_channel;
    466 	struct scsipi_periph *periph;
    467 	int target, lun;
    468 
    469 	target = device_locator(child, SCSIBUSCF_TARGET);
    470 	lun = device_locator(child, SCSIBUSCF_LUN);
    471 
    472 	/* XXXSMP scsipi */
    473 	KERNEL_LOCK(1, curlwp);
    474 
    475 	periph = scsipi_lookup_periph(chan, target, lun);
    476 	KASSERT(periph->periph_dev == child);
    477 
    478 	scsipi_remove_periph(chan, periph);
    479 	free(periph, M_DEVBUF);
    480 
    481 	/* XXXSMP scsipi */
    482 	KERNEL_UNLOCK_ONE(curlwp);
    483 }
    484 
    485 /*
    486  * Print out autoconfiguration information for a subdevice.
    487  *
    488  * This is a slight abuse of 'standard' autoconfiguration semantics,
    489  * because 'print' functions don't normally print the colon and
    490  * device information.  However, in this case that's better than
    491  * either printing redundant information before the attach message,
    492  * or having the device driver call a special function to print out
    493  * the standard device information.
    494  */
    495 static int
    496 scsibusprint(void *aux, const char *pnp)
    497 {
    498 	struct scsipibus_attach_args *sa = aux;
    499 	struct scsipi_inquiry_pattern *inqbuf;
    500 	u_int8_t type;
    501 	const char *dtype;
    502 	char vendor[33], product[65], revision[17];
    503 	int target, lun;
    504 
    505 	if (pnp != NULL)
    506 		aprint_normal("%s", pnp);
    507 
    508 	inqbuf = &sa->sa_inqbuf;
    509 
    510 	target = sa->sa_periph->periph_target;
    511 	lun = sa->sa_periph->periph_lun;
    512 	type = inqbuf->type & SID_TYPE;
    513 
    514 	dtype = scsipi_dtype(type);
    515 
    516 	strnvisx(vendor, sizeof(vendor), inqbuf->vendor, 8,
    517 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    518 	strnvisx(product, sizeof(product), inqbuf->product, 16,
    519 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    520 	strnvisx(revision, sizeof(revision), inqbuf->revision, 4,
    521 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    522 
    523 	aprint_normal(" target %d lun %d: <%s, %s, %s> %s %s",
    524 	    target, lun, vendor, product, revision, dtype,
    525 	    inqbuf->removable ? "removable" : "fixed");
    526 
    527 	return (UNCONF);
    528 }
    529 
    530 static const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
    531 	{{T_DIRECT, T_REMOV,
    532 	 "Apple   ", "iPod            ", ""},	  PQUIRK_START},
    533 	{{T_CDROM, T_REMOV,
    534 	 "CHINON  ", "CD-ROM CDS-431  ", ""},     PQUIRK_NOLUNS},
    535 	{{T_CDROM, T_REMOV,
    536 	 "CHINON  ", "CD-ROM CDS-435  ", ""},     PQUIRK_NOLUNS},
    537 	{{T_CDROM, T_REMOV,
    538 	 "Chinon  ", "CD-ROM CDS-525  ", ""},     PQUIRK_NOLUNS},
    539 	{{T_CDROM, T_REMOV,
    540 	 "CHINON  ", "CD-ROM CDS-535  ", ""},     PQUIRK_NOLUNS},
    541 	{{T_CDROM, T_REMOV,
    542 	 "DEC     ", "RRD42   (C) DEC ", ""},     PQUIRK_NOLUNS},
    543 	{{T_CDROM, T_REMOV,
    544 	 "DENON   ", "DRD-25X         ", "V"},    PQUIRK_NOLUNS},
    545 	{{T_CDROM, T_REMOV,
    546 	 "GENERIC ", "CRD-BP2         ", ""},     PQUIRK_NOLUNS},
    547 	{{T_CDROM, T_REMOV,
    548 	 "HP      ", "C4324/C4325     ", ""},     PQUIRK_NOLUNS},
    549 	{{T_CDROM, T_REMOV,
    550 	 "IMS     ", "CDD521/10       ", "2.06"}, PQUIRK_NOLUNS},
    551 	{{T_CDROM, T_REMOV,
    552 	 "MATSHITA", "CD-ROM CR-5XX   ", "1.0b"}, PQUIRK_NOLUNS},
    553 	{{T_CDROM, T_REMOV,
    554 	 "MEDAVIS ", "RENO CD-ROMX2A  ", ""},     PQUIRK_NOLUNS},
    555 	{{T_CDROM, T_REMOV,
    556 	 "MEDIAVIS", "CDR-H93MV       ", "1.3"},  PQUIRK_NOLUNS},
    557 	{{T_CDROM, T_REMOV,
    558 	 "NEC     ", "CD-ROM DRIVE:502", ""},     PQUIRK_NOLUNS},
    559 	{{T_CDROM, T_REMOV,
    560 	 "NEC     ", "CD-ROM DRIVE:55 ", ""},     PQUIRK_NOLUNS},
    561 	{{T_CDROM, T_REMOV,
    562 	 "NEC     ", "CD-ROM DRIVE:83 ", ""},     PQUIRK_NOLUNS},
    563 	{{T_CDROM, T_REMOV,
    564 	 "NEC     ", "CD-ROM DRIVE:84 ", ""},     PQUIRK_NOLUNS},
    565 	{{T_CDROM, T_REMOV,
    566 	 "NEC     ", "CD-ROM DRIVE:841", ""},     PQUIRK_NOLUNS},
    567         {{T_CDROM, T_REMOV,
    568 	 "OLYMPUS ", "CDS620E         ", "1.1d"},
    569 			       PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOCAPACITY},
    570 	{{T_CDROM, T_REMOV,
    571 	 "PIONEER ", "CD-ROM DR-124X  ", "1.01"}, PQUIRK_NOLUNS},
    572         {{T_CDROM, T_REMOV,
    573          "PLEXTOR ", "CD-ROM PX-4XCS  ", "1.01"},
    574                                PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    575 	{{T_CDROM, T_REMOV,
    576 	 "SONY    ", "CD-ROM CDU-541  ", ""},     PQUIRK_NOLUNS},
    577 	{{T_CDROM, T_REMOV,
    578 	 "SONY    ", "CD-ROM CDU-55S  ", ""},     PQUIRK_NOLUNS},
    579 	{{T_CDROM, T_REMOV,
    580 	 "SONY    ", "CD-ROM CDU-561  ", ""},     PQUIRK_NOLUNS},
    581 	{{T_CDROM, T_REMOV,
    582 	 "SONY    ", "CD-ROM CDU-76S", ""},
    583 				PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    584 	{{T_CDROM, T_REMOV,
    585 	 "SONY    ", "CD-ROM CDU-8003A", ""},     PQUIRK_NOLUNS},
    586 	{{T_CDROM, T_REMOV,
    587 	 "SONY    ", "CD-ROM CDU-8012 ", ""},     PQUIRK_NOLUNS},
    588 	{{T_CDROM, T_REMOV,
    589 	 "TEAC    ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    590 	{{T_CDROM, T_REMOV,
    591 	 "TEAC    ", "CD-ROM CD-56S   ", "1.0B"}, PQUIRK_NOLUNS},
    592 	{{T_CDROM, T_REMOV,
    593 	 "TEXEL   ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    594 	{{T_CDROM, T_REMOV,
    595 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.09"}, PQUIRK_NOLUNS},
    596 	{{T_CDROM, T_REMOV,
    597 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, PQUIRK_NOLUNS},
    598 	{{T_CDROM, T_REMOV,
    599 	 "TOSHIBA ", "XM-4101TASUNSLCD", ""}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    600 	/* "IBM CDRM00201     !F" 0724 is an IBM OEM Toshiba XM-4101BME */
    601 	{{T_CDROM, T_REMOV,
    602 	 "IBM     ", "CDRM00201     !F", "0724"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    603 	{{T_CDROM, T_REMOV,
    604 	 "ShinaKen", "CD-ROM DM-3x1S",   "1.04"}, PQUIRK_NOLUNS},
    605 	{{T_CDROM, T_REMOV,
    606 	 "JVC     ", "R2626",            ""},     PQUIRK_NOLUNS},
    607 	{{T_CDROM, T_REMOV,
    608 	 "YAMAHA", "CRW8424S",           ""},     PQUIRK_NOLUNS},
    609 	{{T_CDROM, T_REMOV,
    610 	 "NEC     ", "CD-ROM DRIVE:222", ""},	  PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    611 
    612 	{{T_DIRECT, T_FIXED,
    613 	 "MICROP  ", "1588-15MBSUN0669", ""},     PQUIRK_AUTOSAVE},
    614 	{{T_DIRECT, T_FIXED,
    615 	 "MICROP  ", "2217-15MQ1091501", ""},     PQUIRK_NOSYNCCACHE},
    616 	{{T_OPTICAL, T_REMOV,
    617 	 "EPSON   ", "OMD-5010        ", "3.08"}, PQUIRK_NOLUNS},
    618 	{{T_DIRECT, T_FIXED,
    619 	 "ADAPTEC ", "AEC-4412BD",       "1.2A"}, PQUIRK_NOMODESENSE},
    620 	{{T_DIRECT, T_FIXED,
    621 	 "ADAPTEC ", "ACB-4000",         ""},     PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE|PQUIRK_NOMODESENSE},
    622 	{{T_DIRECT, T_FIXED,
    623 	 "DEC     ", "RZ55     (C) DEC", ""},     PQUIRK_AUTOSAVE},
    624 	{{T_DIRECT, T_FIXED,
    625 	 "EMULEX  ", "MD21/S2     ESDI", "A00"},
    626 				PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE},
    627 	{{T_DIRECT, T_FIXED,
    628 	 "MICROP",  "1548-15MZ1077801",  "HZ2P"}, PQUIRK_NOTAG},
    629 	{{T_DIRECT, T_FIXED,
    630 	 "HP      ", "C372",             ""},     PQUIRK_NOTAG},
    631 	{{T_DIRECT, T_FIXED,
    632 	 "IBMRAID ", "0662S",		 ""},     PQUIRK_AUTOSAVE},
    633 	{{T_DIRECT, T_FIXED,
    634 	 "IBM     ", "0663H",		 ""},     PQUIRK_AUTOSAVE},
    635 	{{T_DIRECT, T_FIXED,
    636 	 "IBM",	     "0664",		 ""},     PQUIRK_AUTOSAVE},
    637 	{{T_DIRECT, T_FIXED,
    638 	/* improperly report DT-only sync mode */
    639 	 "IBM     ", "DXHS36D",		 ""},
    640 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    641 	{{T_DIRECT, T_FIXED,
    642 	 "IBM     ", "DXHS18Y",		 ""},
    643 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    644 	{{T_DIRECT, T_FIXED,
    645 	 "IBM     ", "H3171-S2",	 ""},
    646 				PQUIRK_NOLUNS|PQUIRK_AUTOSAVE},
    647 	{{T_DIRECT, T_FIXED,
    648 	 "IBM     ", "KZ-C",		 ""},	  PQUIRK_AUTOSAVE},
    649 	/* Broken IBM disk */
    650 	{{T_DIRECT, T_FIXED,
    651 	 ""	   , "DFRSS2F",		 ""},	  PQUIRK_AUTOSAVE},
    652 	{{T_DIRECT, T_FIXED,
    653 	 "Initio  ", "",		 ""},	  PQUIRK_NOBIGMODESENSE},
    654 	{{T_DIRECT, T_REMOV,
    655 	 "MPL     ", "MC-DISK-        ", ""},     PQUIRK_NOLUNS},
    656 	{{T_DIRECT, T_FIXED,
    657 	 "MAXTOR  ", "XT-3280         ", ""},     PQUIRK_NOLUNS},
    658 	{{T_DIRECT, T_FIXED,
    659 	 "MAXTOR  ", "XT-4380S        ", ""},     PQUIRK_NOLUNS},
    660 	{{T_DIRECT, T_FIXED,
    661 	 "MAXTOR  ", "MXT-1240S       ", ""},     PQUIRK_NOLUNS},
    662 	{{T_DIRECT, T_FIXED,
    663 	 "MAXTOR  ", "XT-4170S        ", ""},     PQUIRK_NOLUNS},
    664 	{{T_DIRECT, T_FIXED,
    665 	 "MAXTOR  ", "XT-8760S",         ""},     PQUIRK_NOLUNS},
    666 	{{T_DIRECT, T_FIXED,
    667 	 "MAXTOR  ", "LXT-213S        ", ""},     PQUIRK_NOLUNS},
    668 	{{T_DIRECT, T_FIXED,
    669 	 "MAXTOR  ", "LXT-213S SUN0207", ""},     PQUIRK_NOLUNS},
    670 	{{T_DIRECT, T_FIXED,
    671 	 "MAXTOR  ", "LXT-200S        ", ""},     PQUIRK_NOLUNS},
    672 	{{T_DIRECT, T_FIXED,
    673 	 "MEGADRV ", "EV1000",           ""},     PQUIRK_NOMODESENSE},
    674 	{{T_DIRECT, T_FIXED,
    675 	 "MICROP", "1991-27MZ",          ""},     PQUIRK_NOTAG},
    676 	{{T_DIRECT, T_FIXED,
    677 	 "MST     ", "SnapLink        ", ""},     PQUIRK_NOLUNS},
    678 	{{T_DIRECT, T_FIXED,
    679 	 "NEC     ", "D3847           ", "0307"}, PQUIRK_NOLUNS},
    680 	{{T_DIRECT, T_FIXED,
    681 	 "QUANTUM ", "ELS85S          ", ""},     PQUIRK_AUTOSAVE},
    682 	{{T_DIRECT, T_FIXED,
    683 	 "QUANTUM ", "LPS525S         ", ""},     PQUIRK_NOLUNS},
    684 	{{T_DIRECT, T_FIXED,
    685 	 "QUANTUM ", "P105S 910-10-94x", ""},     PQUIRK_NOLUNS},
    686 	{{T_DIRECT, T_FIXED,
    687 	 "QUANTUM ", "PD1225S         ", ""},     PQUIRK_NOLUNS},
    688 	{{T_DIRECT, T_FIXED,
    689 	 "QUANTUM ", "PD210S   SUN0207", ""},     PQUIRK_NOLUNS},
    690 	{{T_DIRECT, T_FIXED,
    691 	 "QUANTUM ", "ATLAS IV 9 WLS", "0A0A"},   PQUIRK_CAP_NODT},
    692 	{{T_DIRECT, T_FIXED,
    693 	 "RODIME  ", "RO3000S         ", ""},     PQUIRK_NOLUNS},
    694 	{{T_DIRECT, T_FIXED,
    695 	 "SEAGATE ", "ST125N          ", ""},     PQUIRK_NOLUNS},
    696 	{{T_DIRECT, T_FIXED,
    697 	 "SEAGATE ", "ST157N          ", ""},     PQUIRK_NOLUNS},
    698 	{{T_DIRECT, T_FIXED,
    699 	 "SEAGATE ", "ST296           ", ""},     PQUIRK_NOLUNS},
    700 	{{T_DIRECT, T_FIXED,
    701 	 "SEAGATE ", "ST296N          ", ""},     PQUIRK_NOLUNS},
    702 	{{T_DIRECT, T_FIXED,
    703 	 "SEAGATE ", "ST318404LC      ", ""},     PQUIRK_NOLUNS},
    704 	{{T_DIRECT, T_FIXED,
    705 	 "SEAGATE ", "ST15150N        ", ""},     PQUIRK_NOTAG},
    706 	{{T_DIRECT, T_FIXED,
    707 	 "SEAGATE ", "ST19171",          ""},     PQUIRK_NOMODESENSE},
    708 	{{T_DIRECT, T_FIXED,
    709 	 "SEAGATE ", "ST32430N",         ""},     PQUIRK_CAP_SYNC},
    710 	{{T_DIRECT, T_FIXED,
    711 	 "SEAGATE ", "ST34501FC       ", ""},     PQUIRK_NOMODESENSE},
    712 	{{T_DIRECT, T_FIXED,
    713 	 "SEAGATE ", "SX910800N",        ""},     PQUIRK_NOTAG},
    714 	{{T_DIRECT, T_FIXED,
    715 	 "TOSHIBA ", "MK538FB         ", "6027"}, PQUIRK_NOLUNS},
    716 	{{T_DIRECT, T_FIXED,
    717 	 "MICROP  ", "1924",          ""},     PQUIRK_CAP_SYNC},
    718 	{{T_DIRECT, T_FIXED,
    719 	 "FUJITSU ", "M2266",         ""},     PQUIRK_CAP_SYNC},
    720 	{{T_DIRECT, T_FIXED,
    721 	 "FUJITSU ", "M2624S-512      ", ""},     PQUIRK_CAP_SYNC},
    722 	{{T_DIRECT, T_FIXED,
    723 	 "SEAGATE ", "SX336704LC"   , ""}, PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
    724 	{{T_DIRECT, T_FIXED,
    725 	 "SEAGATE ", "SX173404LC",       ""},     PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
    726 
    727 	{{T_DIRECT, T_REMOV,
    728 	 "IOMEGA", "ZIP 100",		 "J.03"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    729 	{{T_DIRECT, T_REMOV,
    730 	 "INSITE", "I325VM",             ""},     PQUIRK_NOLUNS},
    731 
    732 	/* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
    733 	{{T_SEQUENTIAL, T_REMOV,
    734 	 "        ", "                ", "    "}, PQUIRK_NOLUNS},
    735 	{{T_SEQUENTIAL, T_REMOV,
    736 	 "EMULEX  ", "MT-02 QIC       ", ""},     PQUIRK_NOLUNS},
    737 	{{T_SEQUENTIAL, T_REMOV,
    738 	 "CALIPER ", "CP150           ", ""},     PQUIRK_NOLUNS},
    739 	{{T_SEQUENTIAL, T_REMOV,
    740 	 "EXABYTE ", "EXB-8200        ", ""},     PQUIRK_NOLUNS},
    741 	{{T_SEQUENTIAL, T_REMOV,
    742 	 "SONY    ", "GY-10C          ", ""},     PQUIRK_NOLUNS},
    743 	{{T_SEQUENTIAL, T_REMOV,
    744 	 "SONY    ", "SDT-2000        ", "2.09"}, PQUIRK_NOLUNS},
    745 	{{T_SEQUENTIAL, T_REMOV,
    746 	 "SONY    ", "SDT-5000        ", "3."},   PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    747 	{{T_SEQUENTIAL, T_REMOV,
    748 	 "SONY    ", "SDT-5200        ", "3."},   PQUIRK_NOLUNS},
    749 	{{T_SEQUENTIAL, T_REMOV,
    750 	 "TANDBERG", " TDC 3600       ", ""},     PQUIRK_NOLUNS},
    751 	/* Following entry reported as a Tandberg 3600; ref. PR1933 */
    752 	{{T_SEQUENTIAL, T_REMOV,
    753 	 "ARCHIVE ", "VIPER 150  21247", ""},     PQUIRK_NOLUNS},
    754 	/* Following entry for a Cipher ST150S; ref. PR4171 */
    755 	{{T_SEQUENTIAL, T_REMOV,
    756 	 "ARCHIVE ", "VIPER 1500 21247", "2.2G"}, PQUIRK_NOLUNS},
    757 	{{T_SEQUENTIAL, T_REMOV,
    758 	 "ARCHIVE ", "Python 28454-XXX", ""},     PQUIRK_NOLUNS},
    759 	{{T_SEQUENTIAL, T_REMOV,
    760 	 "WANGTEK ", "5099ES SCSI",      ""},     PQUIRK_NOLUNS},
    761 	{{T_SEQUENTIAL, T_REMOV,
    762 	 "WANGTEK ", "5150ES SCSI",      ""},     PQUIRK_NOLUNS},
    763 	{{T_SEQUENTIAL, T_REMOV,
    764 	 "WANGTEK ", "SCSI-36",		 ""},     PQUIRK_NOLUNS},
    765 	{{T_SEQUENTIAL, T_REMOV,
    766 	 "WangDAT ", "Model 1300      ", "02.4"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    767 	{{T_SEQUENTIAL, T_REMOV,
    768 	 "WangDAT ", "Model 2600      ", "01.7"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    769 	{{T_SEQUENTIAL, T_REMOV,
    770 	 "WangDAT ", "Model 3200      ", "02.2"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    771 	{{T_SEQUENTIAL, T_REMOV,
    772 	 "TEAC    ", "MT-2ST/N50      ", ""},     PQUIRK_NOLUNS},
    773 
    774 	{{T_SCANNER, T_FIXED,
    775 	 "RICOH   ", "IS60            ", "1R08"}, PQUIRK_NOLUNS},
    776 	{{T_SCANNER, T_FIXED,
    777 	 "UMAX    ", "Astra 1200S     ", "V2.9"}, PQUIRK_NOLUNS},
    778 	{{T_SCANNER, T_FIXED,
    779 	 "UMAX    ", "Astra 1220S     ", ""},     PQUIRK_NOLUNS},
    780 	{{T_SCANNER, T_FIXED,
    781 	 "UMAX    ", "UMAX S-6E       ", "V2.0"}, PQUIRK_NOLUNS},
    782 	{{T_SCANNER, T_FIXED,
    783 	 "UMAX    ", "UMAX S-12       ", "V2.1"}, PQUIRK_NOLUNS},
    784 	{{T_SCANNER, T_FIXED,
    785 	 "ULTIMA  ", "A6000C          ", ""},     PQUIRK_NOLUNS},
    786 	{{T_PROCESSOR, T_FIXED,
    787 	 "ESG-SHV",  "SCA HSBP M15",     ""},     PQUIRK_NOLUNS},
    788 	{{T_PROCESSOR, T_FIXED,
    789 	 "SYMBIOS",  "",                 ""},     PQUIRK_NOLUNS},
    790 	{{T_PROCESSOR, T_FIXED,
    791 	 "LITRONIC", "PCMCIA          ", ""},     PQUIRK_NOLUNS},
    792 	{{T_CHANGER, T_REMOV,
    793 	 "SONY    ", "CDL1100         ", ""},     PQUIRK_NOLUNS},
    794 	{{T_ENCLOSURE, T_FIXED,
    795 	 "SUN     ", "SENA            ", ""},     PQUIRK_NOLUNS},
    796 };
    797 
    798 /*
    799  * given a target and lun, ask the device what
    800  * it is, and find the correct driver table
    801  * entry.
    802  */
    803 static int
    804 scsi_probe_device(struct scsibus_softc *sc, int target, int lun)
    805 {
    806 	struct scsipi_channel *chan = sc->sc_channel;
    807 	struct scsipi_periph *periph;
    808 	struct scsipi_inquiry_data inqbuf;
    809 	const struct scsi_quirk_inquiry_pattern *finger;
    810 	int checkdtype, priority, docontinue, quirks;
    811 	struct scsipibus_attach_args sa;
    812 	cfdata_t cf;
    813 	int locs[SCSIBUSCF_NLOCS];
    814 
    815 	/*
    816 	 * Assume no more luns to search after this one.
    817 	 * If we successfully get Inquiry data and after
    818 	 * merging quirks we find we can probe for more
    819 	 * luns, we will.
    820 	 */
    821 	docontinue = 0;
    822 
    823 	/* Skip this slot if it is already attached. */
    824 	if (scsipi_lookup_periph(chan, target, lun) != NULL)
    825 		return (docontinue);
    826 
    827 	periph = scsipi_alloc_periph(M_NOWAIT);
    828 	if (periph == NULL) {
    829 #ifdef	DIAGNOSTIC
    830 		aprint_error_dev(sc->sc_dev,
    831 		    "cannot allocate periph for target %d lun %d\n",
    832 		    target, lun);
    833 #endif
    834 		return (ENOMEM);
    835 	}
    836 	periph->periph_channel = chan;
    837 	periph->periph_switch = &scsi_probe_dev;
    838 
    839 	periph->periph_target = target;
    840 	periph->periph_lun = lun;
    841 	periph->periph_quirks = chan->chan_defquirks;
    842 
    843 #ifdef SCSIPI_DEBUG
    844 	if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_SCSI &&
    845 	    SCSIPI_DEBUG_TARGET == target &&
    846 	    SCSIPI_DEBUG_LUN == lun)
    847 		periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
    848 #endif
    849 
    850 	/*
    851 	 * Ask the device what it is
    852 	 */
    853 
    854 #ifdef SCSI_2_DEF
    855 	/* some devices need to be told to go to SCSI2 */
    856 	/* However some just explode if you tell them this.. leave it out */
    857 	scsi_change_def(periph, XS_CTL_DISCOVERY | XS_CTL_SILENT);
    858 #endif /* SCSI_2_DEF */
    859 
    860 	/* Now go ask the device all about itself. */
    861 	memset(&inqbuf, 0, sizeof(inqbuf));
    862 	{
    863 		u_int8_t *extension = &inqbuf.flags1;
    864 		int len = 0;
    865 		while (len < 3)
    866 			extension[len++] = '\0';
    867 		while (len < 3 + 28)
    868 			extension[len++] = ' ';
    869 		while (len < 3 + 28 + 20)
    870 			extension[len++] = '\0';
    871 		while (len < 3 + 28 + 20 + 1)
    872 			extension[len++] = '\0';
    873 		while (len < 3 + 28 + 20 + 1 + 1)
    874 			extension[len++] = '\0';
    875 		while (len < 3 + 28 + 20 + 1 + 1 + (8*2))
    876 			extension[len++] = ' ';
    877 	}
    878 	if (scsipi_inquire(periph, &inqbuf, XS_CTL_DISCOVERY | XS_CTL_SILENT))
    879 		goto bad;
    880 
    881 	periph->periph_type = inqbuf.device & SID_TYPE;
    882 	if (inqbuf.dev_qual2 & SID_REMOVABLE)
    883 		periph->periph_flags |= PERIPH_REMOVABLE;
    884 	periph->periph_version = inqbuf.version & SID_ANSII;
    885 
    886 	/*
    887 	 * Any device qualifier that has the top bit set (qualifier&4 != 0)
    888 	 * is vendor specific and won't match in this switch.
    889 	 * All we do here is throw out bad/negative responses.
    890 	 */
    891 	checkdtype = 0;
    892 	switch (inqbuf.device & SID_QUAL) {
    893 	case SID_QUAL_LU_PRESENT:
    894 		checkdtype = 1;
    895 		break;
    896 
    897 	case SID_QUAL_LU_NOTPRESENT:
    898 	case SID_QUAL_reserved:
    899 	case SID_QUAL_LU_NOT_SUPP:
    900 		goto bad;
    901 
    902 	default:
    903 		break;
    904 	}
    905 
    906 	/* Let the adapter driver handle the device separatley if it wants. */
    907 	if (chan->chan_adapter->adapt_accesschk != NULL &&
    908 	    (*chan->chan_adapter->adapt_accesschk)(periph, &sa.sa_inqbuf))
    909 		goto bad;
    910 
    911 	if (checkdtype) {
    912 		switch (periph->periph_type) {
    913 		case T_DIRECT:
    914 		case T_SEQUENTIAL:
    915 		case T_PRINTER:
    916 		case T_PROCESSOR:
    917 		case T_WORM:
    918 		case T_CDROM:
    919 		case T_SCANNER:
    920 		case T_OPTICAL:
    921 		case T_CHANGER:
    922 		case T_COMM:
    923 		case T_IT8_1:
    924 		case T_IT8_2:
    925 		case T_STORARRAY:
    926 		case T_ENCLOSURE:
    927 		case T_SIMPLE_DIRECT:
    928 		case T_OPTIC_CARD_RW:
    929 		case T_OBJECT_STORED:
    930 		default:
    931 			break;
    932 		case T_NODEVICE:
    933 			goto bad;
    934 		}
    935 	}
    936 
    937 	sa.sa_periph = periph;
    938 	sa.sa_inqbuf.type = inqbuf.device;
    939 	sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
    940 	    T_REMOV : T_FIXED;
    941 	sa.sa_inqbuf.vendor = inqbuf.vendor;
    942 	sa.sa_inqbuf.product = inqbuf.product;
    943 	sa.sa_inqbuf.revision = inqbuf.revision;
    944 	sa.scsipi_info.scsi_version = inqbuf.version;
    945 	sa.sa_inqptr = &inqbuf;
    946 
    947 	finger = scsipi_inqmatch(
    948 	    &sa.sa_inqbuf, scsi_quirk_patterns,
    949 	    sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
    950 	    sizeof(scsi_quirk_patterns[0]), &priority);
    951 
    952 	if (finger != NULL)
    953 		quirks = finger->quirks;
    954 	else
    955 		quirks = 0;
    956 
    957 	/*
    958 	 * Determine the operating mode capabilities of the device.
    959 	 */
    960 	if (periph->periph_version >= 2) {
    961 		if ((inqbuf.flags3 & SID_CmdQue) != 0 &&
    962 		    (quirks & PQUIRK_NOTAG) == 0)
    963 			periph->periph_cap |= PERIPH_CAP_TQING;
    964 		if ((inqbuf.flags3 & SID_Linked) != 0)
    965 			periph->periph_cap |= PERIPH_CAP_LINKCMDS;
    966 		if ((inqbuf.flags3 & SID_Sync) != 0 &&
    967 		    (quirks & PQUIRK_NOSYNC) == 0)
    968 			periph->periph_cap |= PERIPH_CAP_SYNC;
    969 		if ((inqbuf.flags3 & SID_WBus16) != 0 &&
    970 		    (quirks & PQUIRK_NOWIDE) == 0)
    971 			periph->periph_cap |= PERIPH_CAP_WIDE16;
    972 		if ((inqbuf.flags3 & SID_WBus32) != 0 &&
    973 		    (quirks & PQUIRK_NOWIDE) == 0)
    974 			periph->periph_cap |= PERIPH_CAP_WIDE32;
    975 		if ((inqbuf.flags3 & SID_SftRe) != 0)
    976 			periph->periph_cap |= PERIPH_CAP_SFTRESET;
    977 		if ((inqbuf.flags3 & SID_RelAdr) != 0)
    978 			periph->periph_cap |= PERIPH_CAP_RELADR;
    979 		/* SPC-2 */
    980 		if (periph->periph_version >= 3 &&
    981 		    !(quirks & PQUIRK_CAP_NODT)){
    982 			/*
    983 			 * Report ST clocking though CAP_WIDExx/CAP_SYNC.
    984 			 * If the device only supports DT, clear these
    985 			 * flags (DT implies SYNC and WIDE)
    986 			 */
    987 			switch (inqbuf.flags4 & SID_Clocking) {
    988 			case SID_CLOCKING_DT_ONLY:
    989 				periph->periph_cap &=
    990 				    ~(PERIPH_CAP_SYNC |
    991 				      PERIPH_CAP_WIDE16 |
    992 				      PERIPH_CAP_WIDE32);
    993 				/* FALLTHROUGH */
    994 			case SID_CLOCKING_SD_DT:
    995 				periph->periph_cap |= PERIPH_CAP_DT;
    996 				break;
    997 			default: /* ST only or invalid */
    998 				/* nothing to do */
    999 				break;
   1000 			}
   1001 		}
   1002 		if (periph->periph_version >= 3) {
   1003 			if (inqbuf.flags4 & SID_IUS)
   1004 				periph->periph_cap |= PERIPH_CAP_IUS;
   1005 			if (inqbuf.flags4 & SID_QAS)
   1006 				periph->periph_cap |= PERIPH_CAP_QAS;
   1007 		}
   1008 	}
   1009 	if (quirks & PQUIRK_CAP_SYNC)
   1010 		periph->periph_cap |= PERIPH_CAP_SYNC;
   1011 	if (quirks & PQUIRK_CAP_WIDE16)
   1012 		periph->periph_cap |= PERIPH_CAP_WIDE16;
   1013 
   1014 	/*
   1015 	 * Now apply any quirks from the table.
   1016 	 */
   1017 	periph->periph_quirks |= quirks;
   1018 	if (periph->periph_version == 0 &&
   1019 	    (periph->periph_quirks & PQUIRK_FORCELUNS) == 0)
   1020 		periph->periph_quirks |= PQUIRK_NOLUNS;
   1021 
   1022 	if ((periph->periph_quirks & PQUIRK_NOLUNS) == 0)
   1023 		docontinue = 1;
   1024 
   1025 	locs[SCSIBUSCF_TARGET] = target;
   1026 	locs[SCSIBUSCF_LUN] = lun;
   1027 
   1028 	if ((cf = config_search_loc(config_stdsubmatch, sc->sc_dev,
   1029 	     "scsibus", locs, &sa)) != NULL) {
   1030 		scsipi_insert_periph(chan, periph);
   1031 		/*
   1032 		 * XXX Can't assign periph_dev here, because we'll
   1033 		 * XXX need it before config_attach() returns.  Must
   1034 		 * XXX assign it in periph driver.
   1035 		 */
   1036 		config_attach_loc(sc->sc_dev, cf, locs, &sa,
   1037 					 scsibusprint);
   1038 	} else {
   1039 		scsibusprint(&sa, device_xname(sc->sc_dev));
   1040 		aprint_normal(" not configured\n");
   1041 		goto bad;
   1042 	}
   1043 
   1044 	return (docontinue);
   1045 
   1046 bad:
   1047 	free(periph, M_DEVBUF);
   1048 	return (docontinue);
   1049 }
   1050 
   1051 /****** Entry points for user control of the SCSI bus. ******/
   1052 
   1053 static int
   1054 scsibusopen(dev_t dev, int flag, int fmt,
   1055     struct lwp *l)
   1056 {
   1057 	struct scsibus_softc *sc;
   1058 	int error, unit = minor(dev);
   1059 
   1060 	sc = device_lookup_private(&scsibus_cd, unit);
   1061 	if (sc == NULL)
   1062 		return (ENXIO);
   1063 
   1064 	if (sc->sc_flags & SCSIBUSF_OPEN)
   1065 		return (EBUSY);
   1066 
   1067 	if ((error = scsipi_adapter_addref(sc->sc_channel->chan_adapter)) != 0)
   1068 		return (error);
   1069 
   1070 	sc->sc_flags |= SCSIBUSF_OPEN;
   1071 
   1072 	return (0);
   1073 }
   1074 
   1075 static int
   1076 scsibusclose(dev_t dev, int flag, int fmt,
   1077     struct lwp *l)
   1078 {
   1079 	struct scsibus_softc *sc;
   1080 
   1081 	sc = device_lookup_private(&scsibus_cd, minor(dev));
   1082 	scsipi_adapter_delref(sc->sc_channel->chan_adapter);
   1083 
   1084 	sc->sc_flags &= ~SCSIBUSF_OPEN;
   1085 
   1086 	return (0);
   1087 }
   1088 
   1089 static int
   1090 scsibusioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
   1091 {
   1092 	struct scsibus_softc *sc;
   1093 	struct scsipi_channel *chan;
   1094 	int error;
   1095 
   1096 	sc = device_lookup_private(&scsibus_cd, minor(dev));
   1097 	chan = sc->sc_channel;
   1098 
   1099 	/*
   1100 	 * Enforce write permission for ioctls that change the
   1101 	 * state of the bus.  Host adapter specific ioctls must
   1102 	 * be checked by the adapter driver.
   1103 	 */
   1104 	switch (cmd) {
   1105 	case SCBUSIOSCAN:
   1106 	case SCBUSIODETACH:
   1107 	case SCBUSIORESET:
   1108 		if ((flag & FWRITE) == 0)
   1109 			return (EBADF);
   1110 	}
   1111 
   1112 	switch (cmd) {
   1113 	case SCBUSIOSCAN:
   1114 	    {
   1115 		struct scbusioscan_args *a =
   1116 		    (struct scbusioscan_args *)addr;
   1117 
   1118 		error = scsi_probe_bus(sc, a->sa_target, a->sa_lun);
   1119 		break;
   1120 	    }
   1121 
   1122 	case SCBUSIODETACH:
   1123 	    {
   1124 		struct scbusiodetach_args *a =
   1125 		    (struct scbusiodetach_args *)addr;
   1126 
   1127 		error = scsipi_target_detach(chan, a->sa_target, a->sa_lun, 0);
   1128 		break;
   1129 	    }
   1130 
   1131 
   1132 	case SCBUSIORESET:
   1133 		/* FALLTHROUGH */
   1134 	default:
   1135 		if (chan->chan_adapter->adapt_ioctl == NULL)
   1136 			error = ENOTTY;
   1137 		else
   1138 			error = (*chan->chan_adapter->adapt_ioctl)(chan,
   1139 			    cmd, addr, flag, l->l_proc);
   1140 		break;
   1141 	}
   1142 
   1143 	return (error);
   1144 }
   1145