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scsiconf.c revision 1.284.4.1
      1 /*	$NetBSD: scsiconf.c,v 1.284.4.1 2020/05/04 13:50:07 martin 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 1.284.4.1 2020/05/04 13:50:07 martin 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 	SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI, SCSIPI_BUSTYPE_SCSI_PSCSI),
    130 	scsi_scsipi_cmd,
    131 	scsipi_interpret_sense,
    132 	scsi_print_addr,
    133 	scsi_kill_pending,
    134 	scsi_async_event_xfer_mode,
    135 };
    136 
    137 const struct scsipi_bustype scsi_fc_bustype = {
    138 	SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI, SCSIPI_BUSTYPE_SCSI_FC),
    139 	scsi_scsipi_cmd,
    140 	scsipi_interpret_sense,
    141 	scsi_print_addr,
    142 	scsi_kill_pending,
    143 	scsi_fc_sas_async_event_xfer_mode,
    144 };
    145 
    146 const struct scsipi_bustype scsi_sas_bustype = {
    147 	SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI, SCSIPI_BUSTYPE_SCSI_SAS),
    148 	scsi_scsipi_cmd,
    149 	scsipi_interpret_sense,
    150 	scsi_print_addr,
    151 	scsi_kill_pending,
    152 	scsi_fc_sas_async_event_xfer_mode,
    153 };
    154 
    155 const struct scsipi_bustype scsi_usb_bustype = {
    156 	SCSIPI_BUSTYPE_BUSTYPE(SCSIPI_BUSTYPE_SCSI, SCSIPI_BUSTYPE_SCSI_USB),
    157 	scsi_scsipi_cmd,
    158 	scsipi_interpret_sense,
    159 	scsi_print_addr,
    160 	scsi_kill_pending,
    161 	NULL,
    162 };
    163 
    164 static int
    165 scsibus_init(void)
    166 {
    167 
    168 	TAILQ_INIT(&scsi_initq_head);
    169 	mutex_init(&scsibus_qlock, MUTEX_DEFAULT, IPL_NONE);
    170 	cv_init(&scsibus_qcv, "scsinitq");
    171 	return 0;
    172 }
    173 
    174 int
    175 scsiprint(void *aux, const char *pnp)
    176 {
    177 	struct scsipi_channel *chan = aux;
    178 	struct scsipi_adapter *adapt = chan->chan_adapter;
    179 
    180 	/* only "scsibus"es can attach to "scsi"s; easy. */
    181 	if (pnp)
    182 		aprint_normal("scsibus at %s", pnp);
    183 
    184 	/* don't print channel if the controller says there can be only one. */
    185 	if (adapt->adapt_nchannels != 1)
    186 		aprint_normal(" channel %d", chan->chan_channel);
    187 
    188 	return (UNCONF);
    189 }
    190 
    191 static int
    192 scsibusmatch(device_t parent, cfdata_t cf, void *aux)
    193 {
    194 	struct scsipi_channel *chan = aux;
    195 
    196 	if (SCSIPI_BUSTYPE_TYPE(chan->chan_bustype->bustype_type) !=
    197 	    SCSIPI_BUSTYPE_SCSI)
    198 		return 0;
    199 
    200 	if (cf->cf_loc[SCSICF_CHANNEL] != chan->chan_channel &&
    201 	    cf->cf_loc[SCSICF_CHANNEL] != SCSICF_CHANNEL_DEFAULT)
    202 		return (0);
    203 
    204 	return (1);
    205 }
    206 
    207 static void
    208 scsibusattach(device_t parent, device_t self, void *aux)
    209 {
    210 	struct scsibus_softc *sc = device_private(self);
    211 	struct scsipi_channel *chan = aux;
    212 	struct scsi_initq *scsi_initq;
    213 
    214 	if (!pmf_device_register(self, NULL, NULL))
    215 		aprint_error_dev(self, "couldn't establish power handler\n");
    216 
    217 	sc->sc_dev = self;
    218 	sc->sc_channel = chan;
    219 	chan->chan_name = device_xname(sc->sc_dev);
    220 
    221 	aprint_naive(": SCSI bus\n");
    222 	aprint_normal(": %d target%s, %d lun%s per target\n",
    223 	    chan->chan_ntargets,
    224 	    chan->chan_ntargets == 1 ? "" : "s",
    225 	    chan->chan_nluns,
    226 	    chan->chan_nluns == 1 ? "" : "s");
    227 
    228 	/*
    229 	 * XXX
    230 	 * newer adapters support more than 256 outstanding commands
    231 	 * per periph and don't use the tag (they eventually allocate one
    232 	 * internally). Right now scsipi always allocate a tag and
    233 	 * is limited to 256 tags, per scsi specs.
    234 	 * this should be revisited
    235 	 */
    236 	if (chan->chan_flags & SCSIPI_CHAN_OPENINGS) {
    237 		if (chan->chan_max_periph > 256)
    238 			chan->chan_max_periph = 256;
    239 	} else {
    240 		if (chan->chan_adapter->adapt_max_periph > 256)
    241 			chan->chan_adapter->adapt_max_periph = 256;
    242 	}
    243 
    244 	if (atomic_inc_uint_nv(&chan_running(chan)) == 1)
    245 		mutex_init(chan_mtx(chan), MUTEX_DEFAULT, IPL_BIO);
    246 
    247 	cv_init(&chan->chan_cv_thr, "scshut");
    248 	cv_init(&chan->chan_cv_comp, "sccomp");
    249 	cv_init(&chan->chan_cv_xs, "xscmd");
    250 
    251 	if (scsipi_adapter_addref(chan->chan_adapter))
    252 		return;
    253 
    254 	RUN_ONCE(&scsi_conf_ctrl, scsibus_init);
    255 
    256 	/* Initialize the channel structure first */
    257 	chan->chan_init_cb = NULL;
    258 	chan->chan_init_cb_arg = NULL;
    259 
    260 	scsi_initq = malloc(sizeof(struct scsi_initq), M_DEVBUF, M_WAITOK);
    261 	scsi_initq->sc_channel = chan;
    262 	TAILQ_INSERT_TAIL(&scsi_initq_head, scsi_initq, scsi_initq);
    263         config_pending_incr(sc->sc_dev);
    264 	if (scsipi_channel_init(chan)) {
    265 		aprint_error_dev(sc->sc_dev, "failed to init channel\n");
    266 		return;
    267 	}
    268 
    269         /*
    270          * Create the discover thread
    271          */
    272         if (kthread_create(PRI_NONE, 0, NULL, scsibus_discover_thread, sc,
    273             &chan->chan_dthread, "%s-d", chan->chan_name)) {
    274                 aprint_error_dev(sc->sc_dev, "unable to create discovery "
    275 		    "thread for channel %d\n", chan->chan_channel);
    276                 return;
    277         }
    278 }
    279 
    280 static void
    281 scsibus_discover_thread(void *arg)
    282 {
    283 	struct scsibus_softc *sc = arg;
    284 
    285 	scsibus_config(sc);
    286 	sc->sc_channel->chan_dthread = NULL;
    287 	kthread_exit(0);
    288 }
    289 
    290 static void
    291 scsibus_config(struct scsibus_softc *sc)
    292 {
    293 	struct scsipi_channel *chan = sc->sc_channel;
    294 	struct scsi_initq *scsi_initq;
    295 
    296 #ifndef SCSI_DELAY
    297 #define SCSI_DELAY 2
    298 #endif
    299 	if ((chan->chan_flags & SCSIPI_CHAN_NOSETTLE) == 0 &&
    300 	    SCSI_DELAY > 0) {
    301 		aprint_normal_dev(sc->sc_dev,
    302 		    "waiting %d seconds for devices to settle...\n",
    303 		    SCSI_DELAY);
    304 		/* ...an identifier we know no one will use... */
    305 		kpause("scsidly", false, SCSI_DELAY * hz, NULL);
    306 	}
    307 
    308 	/* Make sure the devices probe in scsibus order to avoid jitter. */
    309 	mutex_enter(&scsibus_qlock);
    310 	for (;;) {
    311 		scsi_initq = TAILQ_FIRST(&scsi_initq_head);
    312 		if (scsi_initq->sc_channel == chan)
    313 			break;
    314 		cv_wait(&scsibus_qcv, &scsibus_qlock);
    315 	}
    316 	mutex_exit(&scsibus_qlock);
    317 
    318 	scsi_probe_bus(sc, -1, -1);
    319 
    320 	mutex_enter(&scsibus_qlock);
    321 	TAILQ_REMOVE(&scsi_initq_head, scsi_initq, scsi_initq);
    322 	cv_broadcast(&scsibus_qcv);
    323 	mutex_exit(&scsibus_qlock);
    324 
    325 	free(scsi_initq, M_DEVBUF);
    326 
    327 	scsipi_adapter_delref(chan->chan_adapter);
    328 
    329 	config_pending_decr(sc->sc_dev);
    330 }
    331 
    332 static int
    333 scsibusdetach(device_t self, int flags)
    334 {
    335 	struct scsibus_softc *sc = device_private(self);
    336 	struct scsipi_channel *chan = sc->sc_channel;
    337 	int error;
    338 
    339 	/*
    340 	 * Defer while discovery thread is running
    341 	 */
    342 	while (chan->chan_dthread != NULL)
    343 		kpause("scsibusdet", false, hz, NULL);
    344 
    345 	/*
    346 	 * Detach all of the periphs.
    347 	 */
    348 	error = scsipi_target_detach(chan, -1, -1, flags);
    349 	if (error)
    350 		return error;
    351 
    352 	pmf_device_deregister(self);
    353 
    354 	/*
    355 	 * Shut down the channel.
    356 	 */
    357 	scsipi_channel_shutdown(chan);
    358 
    359 	cv_destroy(&chan->chan_cv_xs);
    360 	cv_destroy(&chan->chan_cv_comp);
    361 	cv_destroy(&chan->chan_cv_thr);
    362 
    363 	if (atomic_dec_uint_nv(&chan_running(chan)) == 0)
    364 		mutex_destroy(chan_mtx(chan));
    365 
    366 	return 0;
    367 }
    368 
    369 /*
    370  * Probe the requested scsi bus. It must be already set up.
    371  * target and lun optionally narrow the search if not -1
    372  */
    373 int
    374 scsi_probe_bus(struct scsibus_softc *sc, int target, int lun)
    375 {
    376 	struct scsipi_channel *chan = sc->sc_channel;
    377 	int maxtarget, mintarget, maxlun, minlun;
    378 	int error;
    379 
    380 	if (target == -1) {
    381 		maxtarget = chan->chan_ntargets - 1;
    382 		mintarget = 0;
    383 	} else {
    384 		if (target < 0 || target >= chan->chan_ntargets)
    385 			return (EINVAL);
    386 		maxtarget = mintarget = target;
    387 	}
    388 
    389 	if (lun == -1) {
    390 		maxlun = chan->chan_nluns - 1;
    391 		minlun = 0;
    392 	} else {
    393 		if (lun < 0 || lun >= chan->chan_nluns)
    394 			return (EINVAL);
    395 		maxlun = minlun = lun;
    396 	}
    397 
    398 	/*
    399 	 * Some HBAs provide an abstracted view of the bus; give them an
    400 	 * oppertunity to re-scan it before we do.
    401 	 */
    402 	scsipi_adapter_ioctl(chan, SCBUSIOLLSCAN, NULL, 0, curproc);
    403 
    404 	if ((error = scsipi_adapter_addref(chan->chan_adapter)) != 0)
    405 		goto ret;
    406 	for (target = mintarget; target <= maxtarget; target++) {
    407 		if (target == chan->chan_id)
    408 			continue;
    409 		for (lun = minlun; lun <= maxlun; lun++) {
    410 			/*
    411 			 * See if there's a device present, and configure it.
    412 			 */
    413 			if (scsi_probe_device(sc, target, lun) == 0)
    414 				break;
    415 			/* otherwise something says we should look further */
    416 		}
    417 
    418 		/*
    419 		 * Now that we've discovered all of the LUNs on this
    420 		 * I_T Nexus, update the xfer mode for all of them
    421 		 * that we know about.
    422 		 */
    423 		scsipi_set_xfer_mode(chan, target, 1);
    424 	}
    425 
    426 	scsipi_adapter_delref(chan->chan_adapter);
    427 ret:
    428 	return (error);
    429 }
    430 
    431 static int
    432 scsibusrescan(device_t sc, const char *ifattr,
    433     const int *locators)
    434 {
    435 
    436 	KASSERT(ifattr && !strcmp(ifattr, "scsibus"));
    437 	KASSERT(locators);
    438 
    439 	return (scsi_probe_bus(device_private(sc),
    440 		locators[SCSIBUSCF_TARGET], locators[SCSIBUSCF_LUN]));
    441 }
    442 
    443 static void
    444 scsidevdetached(device_t self, device_t child)
    445 {
    446 	struct scsibus_softc *sc = device_private(self);
    447 	struct scsipi_channel *chan = sc->sc_channel;
    448 	struct scsipi_periph *periph;
    449 	int target, lun;
    450 
    451 	target = device_locator(child, SCSIBUSCF_TARGET);
    452 	lun = device_locator(child, SCSIBUSCF_LUN);
    453 
    454 	mutex_enter(chan_mtx(chan));
    455 
    456 	periph = scsipi_lookup_periph_locked(chan, target, lun);
    457 	KASSERT(periph != NULL && periph->periph_dev == child);
    458 
    459 	scsipi_remove_periph(chan, periph);
    460 	scsipi_free_periph(periph);
    461 
    462 	mutex_exit(chan_mtx(chan));
    463 }
    464 
    465 /*
    466  * Print out autoconfiguration information for a subdevice.
    467  *
    468  * This is a slight abuse of 'standard' autoconfiguration semantics,
    469  * because 'print' functions don't normally print the colon and
    470  * device information.  However, in this case that's better than
    471  * either printing redundant information before the attach message,
    472  * or having the device driver call a special function to print out
    473  * the standard device information.
    474  */
    475 static int
    476 scsibusprint(void *aux, const char *pnp)
    477 {
    478 	struct scsipibus_attach_args *sa = aux;
    479 	struct scsipi_inquiry_pattern *inqbuf;
    480 	u_int8_t type;
    481 	const char *dtype;
    482 	char vendor[33], product[65], revision[17];
    483 	int target, lun;
    484 
    485 	if (pnp != NULL)
    486 		aprint_normal("%s", pnp);
    487 
    488 	inqbuf = &sa->sa_inqbuf;
    489 
    490 	target = sa->sa_periph->periph_target;
    491 	lun = sa->sa_periph->periph_lun;
    492 	type = inqbuf->type & SID_TYPE;
    493 
    494 	dtype = scsipi_dtype(type);
    495 
    496 	strnvisx(vendor, sizeof(vendor), inqbuf->vendor, 8,
    497 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    498 	strnvisx(product, sizeof(product), inqbuf->product, 16,
    499 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    500 	strnvisx(revision, sizeof(revision), inqbuf->revision, 4,
    501 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
    502 
    503 	aprint_normal(" target %d lun %d: <%s, %s, %s> %s %s%s",
    504 		      target, lun, vendor, product, revision, dtype,
    505 		      inqbuf->removable ? "removable" : "fixed",
    506 		      (sa->sa_periph->periph_opcs != NULL)
    507 		        ? " timeout-info" : "");
    508 
    509 	return (UNCONF);
    510 }
    511 
    512 static const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
    513 	{{T_DIRECT, T_REMOV,
    514 	 "Apple   ", "iPod            ", ""},	  PQUIRK_START},
    515 	{{T_CDROM, T_REMOV,
    516 	 "CHINON  ", "CD-ROM CDS-431  ", ""},     PQUIRK_NOLUNS},
    517 	{{T_CDROM, T_REMOV,
    518 	 "CHINON  ", "CD-ROM CDS-435  ", ""},     PQUIRK_NOLUNS},
    519 	{{T_CDROM, T_REMOV,
    520 	 "Chinon  ", "CD-ROM CDS-525  ", ""},     PQUIRK_NOLUNS},
    521 	{{T_CDROM, T_REMOV,
    522 	 "CHINON  ", "CD-ROM CDS-535  ", ""},     PQUIRK_NOLUNS},
    523 	{{T_CDROM, T_REMOV,
    524 	 "DEC     ", "RRD42   (C) DEC ", ""},     PQUIRK_NOLUNS},
    525 	{{T_CDROM, T_REMOV,
    526 	 "DENON   ", "DRD-25X         ", "V"},    PQUIRK_NOLUNS},
    527 	{{T_CDROM, T_REMOV,
    528 	 "GENERIC ", "CRD-BP2         ", ""},     PQUIRK_NOLUNS},
    529 	{{T_CDROM, T_REMOV,
    530 	 "HP      ", "C4324/C4325     ", ""},     PQUIRK_NOLUNS},
    531 	{{T_CDROM, T_REMOV,
    532 	 "IMS     ", "CDD521/10       ", "2.06"}, PQUIRK_NOLUNS},
    533 	{{T_CDROM, T_REMOV,
    534 	 "MATSHITA", "CD-ROM CR-5XX   ", "1.0b"}, PQUIRK_NOLUNS},
    535 	{{T_CDROM, T_REMOV,
    536 	 "MEDAVIS ", "RENO CD-ROMX2A  ", ""},     PQUIRK_NOLUNS},
    537 	{{T_CDROM, T_REMOV,
    538 	 "MEDIAVIS", "CDR-H93MV       ", "1.3"},  PQUIRK_NOLUNS},
    539 	{{T_CDROM, T_REMOV,
    540 	 "NEC     ", "CD-ROM DRIVE:502", ""},     PQUIRK_NOLUNS},
    541 	{{T_CDROM, T_REMOV,
    542 	 "NEC     ", "CD-ROM DRIVE:55 ", ""},     PQUIRK_NOLUNS},
    543 	{{T_CDROM, T_REMOV,
    544 	 "NEC     ", "CD-ROM DRIVE:83 ", ""},     PQUIRK_NOLUNS},
    545 	{{T_CDROM, T_REMOV,
    546 	 "NEC     ", "CD-ROM DRIVE:84 ", ""},     PQUIRK_NOLUNS},
    547 	{{T_CDROM, T_REMOV,
    548 	 "NEC     ", "CD-ROM DRIVE:841", ""},     PQUIRK_NOLUNS},
    549         {{T_CDROM, T_REMOV,
    550 	 "OLYMPUS ", "CDS620E         ", "1.1d"},
    551 			       PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOCAPACITY},
    552 	{{T_CDROM, T_REMOV,
    553 	 "PIONEER ", "CD-ROM DR-124X  ", "1.01"}, PQUIRK_NOLUNS},
    554         {{T_CDROM, T_REMOV,
    555          "PLEXTOR ", "CD-ROM PX-4XCS  ", "1.01"},
    556                                PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    557 	{{T_CDROM, T_REMOV,
    558 	 "SONY    ", "CD-ROM CDU-541  ", ""},     PQUIRK_NOLUNS},
    559 	{{T_CDROM, T_REMOV,
    560 	 "SONY    ", "CD-ROM CDU-55S  ", ""},     PQUIRK_NOLUNS},
    561 	{{T_CDROM, T_REMOV,
    562 	 "SONY    ", "CD-ROM CDU-561  ", ""},     PQUIRK_NOLUNS},
    563 	{{T_CDROM, T_REMOV,
    564 	 "SONY    ", "CD-ROM CDU-76S", ""},
    565 				PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    566 	{{T_CDROM, T_REMOV,
    567 	 "SONY    ", "CD-ROM CDU-8003A", ""},     PQUIRK_NOLUNS},
    568 	{{T_CDROM, T_REMOV,
    569 	 "SONY    ", "CD-ROM CDU-8012 ", ""},     PQUIRK_NOLUNS},
    570 	{{T_CDROM, T_REMOV,
    571 	 "TEAC    ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    572 	{{T_CDROM, T_REMOV,
    573 	 "TEAC    ", "CD-ROM CD-56S   ", "1.0B"}, PQUIRK_NOLUNS},
    574 	{{T_CDROM, T_REMOV,
    575 	 "TEXEL   ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
    576 	{{T_CDROM, T_REMOV,
    577 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.09"}, PQUIRK_NOLUNS},
    578 	{{T_CDROM, T_REMOV,
    579 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, PQUIRK_NOLUNS},
    580 	{{T_CDROM, T_REMOV,
    581 	 "TOSHIBA ", "XM-4101TASUNSLCD", ""}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    582 	/* "IBM CDRM00201     !F" 0724 is an IBM OEM Toshiba XM-4101BME */
    583 	{{T_CDROM, T_REMOV,
    584 	 "IBM     ", "CDRM00201     !F", "0724"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    585 	{{T_CDROM, T_REMOV,
    586 	 "ShinaKen", "CD-ROM DM-3x1S",   "1.04"}, PQUIRK_NOLUNS},
    587 	{{T_CDROM, T_REMOV,
    588 	 "JVC     ", "R2626",            ""},     PQUIRK_NOLUNS},
    589 	{{T_CDROM, T_REMOV,
    590 	 "YAMAHA", "CRW8424S",           ""},     PQUIRK_NOLUNS},
    591 	{{T_CDROM, T_REMOV,
    592 	 "NEC     ", "CD-ROM DRIVE:222", ""},	  PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    593 
    594 	{{T_DIRECT, T_FIXED,
    595 	 "MICROP  ", "1588-15MBSUN0669", ""},     PQUIRK_AUTOSAVE},
    596 	{{T_DIRECT, T_FIXED,
    597 	 "MICROP  ", "2217-15MQ1091501", ""},     PQUIRK_NOSYNCCACHE},
    598 	{{T_OPTICAL, T_REMOV,
    599 	 "EPSON   ", "OMD-5010        ", "3.08"}, PQUIRK_NOLUNS},
    600 	{{T_DIRECT, T_FIXED,
    601 	 "ADAPTEC ", "AEC-4412BD",       "1.2A"}, PQUIRK_NOMODESENSE},
    602 	{{T_DIRECT, T_FIXED,
    603 	 "ADAPTEC ", "ACB-4000",         ""},     PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE|PQUIRK_NOMODESENSE},
    604 	{{T_DIRECT, T_FIXED,
    605 	 "DEC     ", "RZ55     (C) DEC", ""},     PQUIRK_AUTOSAVE},
    606 	{{T_DIRECT, T_FIXED,
    607 	 "EMULEX  ", "MD21/S2     ESDI", "A00"},
    608 				PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE},
    609 	{{T_DIRECT, T_FIXED,
    610 	 "MICROP",  "1548-15MZ1077801",  "HZ2P"}, PQUIRK_NOTAG},
    611 	{{T_DIRECT, T_FIXED,
    612 	 "HP      ", "C372",             ""},     PQUIRK_NOTAG},
    613 	{{T_DIRECT, T_FIXED,
    614 	 "IBMRAID ", "0662S",		 ""},     PQUIRK_AUTOSAVE},
    615 	{{T_DIRECT, T_FIXED,
    616 	 "IBM     ", "0663H",		 ""},     PQUIRK_AUTOSAVE},
    617 	{{T_DIRECT, T_FIXED,
    618 	 "IBM",	     "0664",		 ""},     PQUIRK_AUTOSAVE},
    619 	{{T_DIRECT, T_FIXED,
    620 	/* improperly report DT-only sync mode */
    621 	 "IBM     ", "DXHS36D",		 ""},
    622 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    623 	{{T_DIRECT, T_FIXED,
    624 	 "IBM     ", "DXHS18Y",		 ""},
    625 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
    626 	{{T_DIRECT, T_FIXED,
    627 	 "IBM     ", "H3171-S2",	 ""},
    628 				PQUIRK_NOLUNS|PQUIRK_AUTOSAVE},
    629 	{{T_DIRECT, T_FIXED,
    630 	 "IBM     ", "KZ-C",		 ""},	  PQUIRK_AUTOSAVE},
    631 	/* Broken IBM disk */
    632 	{{T_DIRECT, T_FIXED,
    633 	 ""	   , "DFRSS2F",		 ""},	  PQUIRK_AUTOSAVE},
    634 	{{T_DIRECT, T_FIXED,
    635 	 "Initio  ", "",		 ""},	  PQUIRK_NOBIGMODESENSE},
    636 	{{T_DIRECT, T_FIXED,
    637 	 "JMicron ", "Generic         ", ""},	  PQUIRK_NOFUA},
    638 	{{T_DIRECT, T_REMOV,
    639 	 "MPL     ", "MC-DISK-        ", ""},     PQUIRK_NOLUNS},
    640 	{{T_DIRECT, T_FIXED,
    641 	 "MAXTOR  ", "XT-3280         ", ""},     PQUIRK_NOLUNS},
    642 	{{T_DIRECT, T_FIXED,
    643 	 "MAXTOR  ", "XT-4380S        ", ""},     PQUIRK_NOLUNS},
    644 	{{T_DIRECT, T_FIXED,
    645 	 "MAXTOR  ", "MXT-1240S       ", ""},     PQUIRK_NOLUNS},
    646 	{{T_DIRECT, T_FIXED,
    647 	 "MAXTOR  ", "XT-4170S        ", ""},     PQUIRK_NOLUNS},
    648 	{{T_DIRECT, T_FIXED,
    649 	 "MAXTOR  ", "XT-8760S",         ""},     PQUIRK_NOLUNS},
    650 	{{T_DIRECT, T_FIXED,
    651 	 "MAXTOR  ", "LXT-213S        ", ""},     PQUIRK_NOLUNS},
    652 	{{T_DIRECT, T_FIXED,
    653 	 "MAXTOR  ", "LXT-213S SUN0207", ""},     PQUIRK_NOLUNS},
    654 	{{T_DIRECT, T_FIXED,
    655 	 "MAXTOR  ", "LXT-200S        ", ""},     PQUIRK_NOLUNS},
    656 	{{T_DIRECT, T_FIXED,
    657 	 "MEGADRV ", "EV1000",           ""},     PQUIRK_NOMODESENSE},
    658 	{{T_DIRECT, T_FIXED,
    659 	 "MICROP", "1991-27MZ",          ""},     PQUIRK_NOTAG},
    660 	{{T_DIRECT, T_FIXED,
    661 	 "MST     ", "SnapLink        ", ""},     PQUIRK_NOLUNS},
    662 	{{T_DIRECT, T_FIXED,
    663 	 "NEC     ", "D3847           ", "0307"}, PQUIRK_NOLUNS},
    664 	{{T_DIRECT, T_FIXED,
    665 	 "QUANTUM ", "ELS85S          ", ""},     PQUIRK_AUTOSAVE},
    666 	{{T_DIRECT, T_FIXED,
    667 	 "QUANTUM ", "LPS525S         ", ""},     PQUIRK_NOLUNS},
    668 	{{T_DIRECT, T_FIXED,
    669 	 "QUANTUM ", "P105S 910-10-94x", ""},     PQUIRK_NOLUNS},
    670 	{{T_DIRECT, T_FIXED,
    671 	 "QUANTUM ", "PD1225S         ", ""},     PQUIRK_NOLUNS},
    672 	{{T_DIRECT, T_FIXED,
    673 	 "QUANTUM ", "PD210S   SUN0207", ""},     PQUIRK_NOLUNS},
    674 	{{T_DIRECT, T_FIXED,
    675 	 "QUANTUM ", "ATLAS IV 9 WLS", "0A0A"},   PQUIRK_CAP_NODT},
    676 	{{T_DIRECT, T_FIXED,
    677 	 "RODIME  ", "RO3000S         ", ""},     PQUIRK_NOLUNS},
    678 	{{T_DIRECT, T_FIXED,
    679 	 "SEAGATE ", "ST125N          ", ""},     PQUIRK_NOLUNS},
    680 	{{T_DIRECT, T_FIXED,
    681 	 "SEAGATE ", "ST157N          ", ""},     PQUIRK_NOLUNS},
    682 	{{T_DIRECT, T_FIXED,
    683 	 "SEAGATE ", "ST296           ", ""},     PQUIRK_NOLUNS},
    684 	{{T_DIRECT, T_FIXED,
    685 	 "SEAGATE ", "ST296N          ", ""},     PQUIRK_NOLUNS},
    686 	{{T_DIRECT, T_FIXED,
    687 	 "SEAGATE ", "ST318404LC      ", ""},     PQUIRK_NOLUNS},
    688 	{{T_DIRECT, T_FIXED,
    689 	 "SEAGATE ", "ST336753LC      ", ""},     PQUIRK_NOLUNS},
    690 	{{T_DIRECT, T_FIXED,
    691 	 "SEAGATE ", "ST336753LW      ", ""},     PQUIRK_NOLUNS},
    692 	{{T_DIRECT, T_FIXED,
    693 	 "SEAGATE ", "ST336754LC      ", ""},     PQUIRK_NOLUNS},
    694 	{{T_DIRECT, T_FIXED,
    695 	 "SEAGATE ", "ST39236LC       ", ""},     PQUIRK_NOLUNS},
    696 	{{T_DIRECT, T_FIXED,
    697 	 "SEAGATE ", "ST15150N        ", ""},     PQUIRK_NOTAG},
    698 	{{T_DIRECT, T_FIXED,
    699 	 "SEAGATE ", "ST19171",          ""},     PQUIRK_NOMODESENSE},
    700 	{{T_DIRECT, T_FIXED,
    701 	 "SEAGATE ", "ST32430N",         ""},     PQUIRK_CAP_SYNC},
    702 	{{T_DIRECT, T_FIXED,
    703 	 "SEAGATE ", "ST34501FC       ", ""},     PQUIRK_NOMODESENSE},
    704 	{{T_DIRECT, T_FIXED,
    705 	 "SEAGATE ", "SX910800N",        ""},     PQUIRK_NOTAG},
    706 	{{T_DIRECT, T_FIXED,
    707 	 "TOSHIBA ", "MK538FB         ", "6027"}, PQUIRK_NOLUNS},
    708 	{{T_DIRECT, T_FIXED,
    709 	 "MICROP  ", "1924",          ""},     PQUIRK_CAP_SYNC},
    710 	{{T_DIRECT, T_FIXED,
    711 	 "FUJITSU ", "M2266",         ""},     PQUIRK_CAP_SYNC},
    712 	{{T_DIRECT, T_FIXED,
    713 	 "FUJITSU ", "M2624S-512      ", ""},     PQUIRK_CAP_SYNC},
    714 	{{T_DIRECT, T_FIXED,
    715 	 "SEAGATE ", "SX336704LC"   , ""}, PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
    716 	{{T_DIRECT, T_FIXED,
    717 	 "SEAGATE ", "SX173404LC",       ""},     PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
    718 
    719 	{{T_DIRECT, T_REMOV,
    720 	 "IOMEGA", "ZIP 100",		 "J.03"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
    721 	{{T_DIRECT, T_REMOV,
    722 	 "INSITE", "I325VM",             ""},     PQUIRK_NOLUNS},
    723 
    724 	/* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
    725 	{{T_SEQUENTIAL, T_REMOV,
    726 	 "        ", "                ", "    "}, PQUIRK_NOLUNS},
    727 	{{T_SEQUENTIAL, T_REMOV,
    728 	 "EMULEX  ", "MT-02 QIC       ", ""},     PQUIRK_NOLUNS},
    729 	{{T_SEQUENTIAL, T_REMOV,
    730 	 "CALIPER ", "CP150           ", ""},     PQUIRK_NOLUNS},
    731 	{{T_SEQUENTIAL, T_REMOV,
    732 	 "EXABYTE ", "EXB-8200        ", ""},     PQUIRK_NOLUNS},
    733 	{{T_SEQUENTIAL, T_REMOV,
    734 	 "SONY    ", "GY-10C          ", ""},     PQUIRK_NOLUNS},
    735 	{{T_SEQUENTIAL, T_REMOV,
    736 	 "SONY    ", "SDT-2000        ", "2.09"}, PQUIRK_NOLUNS},
    737 	{{T_SEQUENTIAL, T_REMOV,
    738 	 "SONY    ", "SDT-5000        ", "3."},   PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    739 	{{T_SEQUENTIAL, T_REMOV,
    740 	 "SONY    ", "SDT-5200        ", "3."},   PQUIRK_NOLUNS},
    741 	{{T_SEQUENTIAL, T_REMOV,
    742 	 "TANDBERG", " TDC 3600       ", ""},     PQUIRK_NOLUNS},
    743 	/* Following entry reported as a Tandberg 3600; ref. PR1933 */
    744 	{{T_SEQUENTIAL, T_REMOV,
    745 	 "ARCHIVE ", "VIPER 150  21247", ""},     PQUIRK_NOLUNS},
    746 	/* Following entry for a Cipher ST150S; ref. PR4171 */
    747 	{{T_SEQUENTIAL, T_REMOV,
    748 	 "ARCHIVE ", "VIPER 1500 21247", "2.2G"}, PQUIRK_NOLUNS},
    749 	{{T_SEQUENTIAL, T_REMOV,
    750 	 "ARCHIVE ", "Python 28454-XXX", ""},     PQUIRK_NOLUNS},
    751 	{{T_SEQUENTIAL, T_REMOV,
    752 	 "WANGTEK ", "5099ES SCSI",      ""},     PQUIRK_NOLUNS},
    753 	{{T_SEQUENTIAL, T_REMOV,
    754 	 "WANGTEK ", "5150ES SCSI",      ""},     PQUIRK_NOLUNS},
    755 	{{T_SEQUENTIAL, T_REMOV,
    756 	 "WANGTEK ", "SCSI-36",		 ""},     PQUIRK_NOLUNS},
    757 	{{T_SEQUENTIAL, T_REMOV,
    758 	 "WangDAT ", "Model 1300      ", "02.4"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    759 	{{T_SEQUENTIAL, T_REMOV,
    760 	 "WangDAT ", "Model 2600      ", "01.7"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    761 	{{T_SEQUENTIAL, T_REMOV,
    762 	 "WangDAT ", "Model 3200      ", "02.2"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
    763 	{{T_SEQUENTIAL, T_REMOV,
    764 	 "TEAC    ", "MT-2ST/N50      ", ""},     PQUIRK_NOLUNS},
    765 
    766 	{{T_SCANNER, T_FIXED,
    767 	 "RICOH   ", "IS60            ", "1R08"}, PQUIRK_NOLUNS},
    768 	{{T_SCANNER, T_FIXED,
    769 	 "UMAX    ", "Astra 1200S     ", "V2.9"}, PQUIRK_NOLUNS},
    770 	{{T_SCANNER, T_FIXED,
    771 	 "UMAX    ", "Astra 1220S     ", ""},     PQUIRK_NOLUNS},
    772 	{{T_SCANNER, T_FIXED,
    773 	 "UMAX    ", "UMAX S-6E       ", "V2.0"}, PQUIRK_NOLUNS},
    774 	{{T_SCANNER, T_FIXED,
    775 	 "UMAX    ", "UMAX S-12       ", "V2.1"}, PQUIRK_NOLUNS},
    776 	{{T_SCANNER, T_FIXED,
    777 	 "ULTIMA  ", "A6000C          ", ""},     PQUIRK_NOLUNS},
    778 	{{T_PROCESSOR, T_FIXED,
    779 	 "ESG-SHV",  "SCA HSBP M15",     ""},     PQUIRK_NOLUNS},
    780 	{{T_PROCESSOR, T_FIXED,
    781 	 "SYMBIOS",  "",                 ""},     PQUIRK_NOLUNS},
    782 	{{T_PROCESSOR, T_FIXED,
    783 	 "LITRONIC", "PCMCIA          ", ""},     PQUIRK_NOLUNS},
    784 	{{T_CHANGER, T_REMOV,
    785 	 "SONY    ", "CDL1100         ", ""},     PQUIRK_NOLUNS},
    786 	{{T_ENCLOSURE, T_FIXED,
    787 	 "SUN     ", "SENA            ", ""},     PQUIRK_NOLUNS},
    788 };
    789 
    790 /*
    791  * given a target and lun, ask the device what
    792  * it is, and find the correct driver table
    793  * entry.
    794  */
    795 static int
    796 scsi_probe_device(struct scsibus_softc *sc, int target, int lun)
    797 {
    798 	struct scsipi_channel *chan = sc->sc_channel;
    799 	struct scsipi_periph *periph;
    800 	struct scsipi_inquiry_data inqbuf;
    801 	const struct scsi_quirk_inquiry_pattern *finger;
    802 	int checkdtype, priority, docontinue, quirks;
    803 	struct scsipibus_attach_args sa;
    804 	cfdata_t cf;
    805 	int locs[SCSIBUSCF_NLOCS];
    806 
    807 	/*
    808 	 * Assume no more luns to search after this one.
    809 	 * If we successfully get Inquiry data and after
    810 	 * merging quirks we find we can probe for more
    811 	 * luns, we will.
    812 	 */
    813 	docontinue = 0;
    814 
    815 	/* Skip this slot if it is already attached. */
    816 	if (scsipi_lookup_periph(chan, target, lun) != NULL)
    817 		return (docontinue);
    818 
    819 	periph = scsipi_alloc_periph(M_NOWAIT);
    820 	if (periph == NULL) {
    821 #ifdef	DIAGNOSTIC
    822 		aprint_error_dev(sc->sc_dev,
    823 		    "cannot allocate periph for target %d lun %d\n",
    824 		    target, lun);
    825 #endif
    826 		return (ENOMEM);
    827 	}
    828 	periph->periph_channel = chan;
    829 	periph->periph_switch = &scsi_probe_dev;
    830 
    831 	periph->periph_target = target;
    832 	periph->periph_lun = lun;
    833 	periph->periph_quirks = chan->chan_defquirks;
    834 
    835 #ifdef SCSIPI_DEBUG
    836 	if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_SCSI &&
    837 	    SCSIPI_DEBUG_TARGET == target &&
    838 	    SCSIPI_DEBUG_LUN == lun)
    839 		periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
    840 #endif
    841 
    842 	/*
    843 	 * Ask the device what it is
    844 	 */
    845 
    846 #ifdef SCSI_2_DEF
    847 	/* some devices need to be told to go to SCSI2 */
    848 	/* However some just explode if you tell them this.. leave it out */
    849 	scsi_change_def(periph, XS_CTL_DISCOVERY | XS_CTL_SILENT);
    850 #endif /* SCSI_2_DEF */
    851 
    852 	/* Now go ask the device all about itself. */
    853 	memset(&inqbuf, 0, sizeof(inqbuf));
    854 	{
    855 		u_int8_t *extension = &inqbuf.flags1;
    856 		int len = 0;
    857 		while (len < 3)
    858 			extension[len++] = '\0';
    859 		while (len < 3 + 28)
    860 			extension[len++] = ' ';
    861 		while (len < 3 + 28 + 20)
    862 			extension[len++] = '\0';
    863 		while (len < 3 + 28 + 20 + 1)
    864 			extension[len++] = '\0';
    865 		while (len < 3 + 28 + 20 + 1 + 1)
    866 			extension[len++] = '\0';
    867 		while (len < 3 + 28 + 20 + 1 + 1 + (8*2))
    868 			extension[len++] = ' ';
    869 	}
    870 	if (scsipi_inquire(periph, &inqbuf, XS_CTL_DISCOVERY | XS_CTL_SILENT))
    871 		goto bad;
    872 
    873 	periph->periph_type = inqbuf.device & SID_TYPE;
    874 	if (inqbuf.dev_qual2 & SID_REMOVABLE)
    875 		periph->periph_flags |= PERIPH_REMOVABLE;
    876 	periph->periph_version = inqbuf.version & SID_ANSII;
    877 
    878 	/*
    879 	 * Any device qualifier that has the top bit set (qualifier&4 != 0)
    880 	 * is vendor specific and won't match in this switch.
    881 	 * All we do here is throw out bad/negative responses.
    882 	 */
    883 	checkdtype = 0;
    884 	switch (inqbuf.device & SID_QUAL) {
    885 	case SID_QUAL_LU_PRESENT:
    886 		checkdtype = 1;
    887 		break;
    888 
    889 	case SID_QUAL_LU_NOTPRESENT:
    890 	case SID_QUAL_reserved:
    891 	case SID_QUAL_LU_NOT_SUPP:
    892 		goto bad;
    893 
    894 	default:
    895 		break;
    896 	}
    897 
    898 	/* Let the adapter driver handle the device separatley if it wants. */
    899 	if (chan->chan_adapter->adapt_accesschk != NULL &&
    900 	    (*chan->chan_adapter->adapt_accesschk)(periph, &sa.sa_inqbuf))
    901 		goto bad;
    902 
    903 	if (checkdtype) {
    904 		switch (periph->periph_type) {
    905 		case T_DIRECT:
    906 		case T_SEQUENTIAL:
    907 		case T_PRINTER:
    908 		case T_PROCESSOR:
    909 		case T_WORM:
    910 		case T_CDROM:
    911 		case T_SCANNER:
    912 		case T_OPTICAL:
    913 		case T_CHANGER:
    914 		case T_COMM:
    915 		case T_IT8_1:
    916 		case T_IT8_2:
    917 		case T_STORARRAY:
    918 		case T_ENCLOSURE:
    919 		case T_SIMPLE_DIRECT:
    920 		case T_OPTIC_CARD_RW:
    921 		case T_OBJECT_STORED:
    922 		default:
    923 			break;
    924 		case T_NODEVICE:
    925 			goto bad;
    926 		}
    927 	}
    928 
    929 	sa.sa_periph = periph;
    930 	sa.sa_inqbuf.type = inqbuf.device;
    931 	sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
    932 	    T_REMOV : T_FIXED;
    933 	sa.sa_inqbuf.vendor = inqbuf.vendor;
    934 	sa.sa_inqbuf.product = inqbuf.product;
    935 	sa.sa_inqbuf.revision = inqbuf.revision;
    936 	sa.scsipi_info.scsi_version = inqbuf.version;
    937 	sa.sa_inqptr = &inqbuf;
    938 
    939 	finger = scsipi_inqmatch(
    940 	    &sa.sa_inqbuf, scsi_quirk_patterns,
    941 	    sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
    942 	    sizeof(scsi_quirk_patterns[0]), &priority);
    943 
    944 	if (finger != NULL)
    945 		quirks = finger->quirks;
    946 	else
    947 		quirks = 0;
    948 
    949 	/*
    950 	 * Determine the operating mode capabilities of the device.
    951 	 */
    952 	if (periph->periph_version >= 2) {
    953 		if ((inqbuf.flags3 & SID_CmdQue) != 0 &&
    954 		    (quirks & PQUIRK_NOTAG) == 0)
    955 			periph->periph_cap |= PERIPH_CAP_TQING;
    956 		if ((inqbuf.flags3 & SID_Linked) != 0)
    957 			periph->periph_cap |= PERIPH_CAP_LINKCMDS;
    958 		if ((inqbuf.flags3 & SID_Sync) != 0 &&
    959 		    (quirks & PQUIRK_NOSYNC) == 0)
    960 			periph->periph_cap |= PERIPH_CAP_SYNC;
    961 		if ((inqbuf.flags3 & SID_WBus16) != 0 &&
    962 		    (quirks & PQUIRK_NOWIDE) == 0)
    963 			periph->periph_cap |= PERIPH_CAP_WIDE16;
    964 		if ((inqbuf.flags3 & SID_WBus32) != 0 &&
    965 		    (quirks & PQUIRK_NOWIDE) == 0)
    966 			periph->periph_cap |= PERIPH_CAP_WIDE32;
    967 		if ((inqbuf.flags3 & SID_SftRe) != 0)
    968 			periph->periph_cap |= PERIPH_CAP_SFTRESET;
    969 		if ((inqbuf.flags3 & SID_RelAdr) != 0)
    970 			periph->periph_cap |= PERIPH_CAP_RELADR;
    971 		/* SPC-2 */
    972 		if (periph->periph_version >= 3 &&
    973 		    !(quirks & PQUIRK_CAP_NODT)){
    974 			/*
    975 			 * Report ST clocking though CAP_WIDExx/CAP_SYNC.
    976 			 * If the device only supports DT, clear these
    977 			 * flags (DT implies SYNC and WIDE)
    978 			 */
    979 			switch (inqbuf.flags4 & SID_Clocking) {
    980 			case SID_CLOCKING_DT_ONLY:
    981 				periph->periph_cap &=
    982 				    ~(PERIPH_CAP_SYNC |
    983 				      PERIPH_CAP_WIDE16 |
    984 				      PERIPH_CAP_WIDE32);
    985 				/* FALLTHROUGH */
    986 			case SID_CLOCKING_SD_DT:
    987 				periph->periph_cap |= PERIPH_CAP_DT;
    988 				break;
    989 			default: /* ST only or invalid */
    990 				/* nothing to do */
    991 				break;
    992 			}
    993 		}
    994 		if (periph->periph_version >= 3) {
    995 			if (inqbuf.flags4 & SID_IUS)
    996 				periph->periph_cap |= PERIPH_CAP_IUS;
    997 			if (inqbuf.flags4 & SID_QAS)
    998 				periph->periph_cap |= PERIPH_CAP_QAS;
    999 		}
   1000 	}
   1001 	if (quirks & PQUIRK_CAP_SYNC)
   1002 		periph->periph_cap |= PERIPH_CAP_SYNC;
   1003 	if (quirks & PQUIRK_CAP_WIDE16)
   1004 		periph->periph_cap |= PERIPH_CAP_WIDE16;
   1005 
   1006 	/*
   1007 	 * Now apply any quirks from the table.
   1008 	 */
   1009 	periph->periph_quirks |= quirks;
   1010 	if (periph->periph_version == 0 &&
   1011 	    (periph->periph_quirks & PQUIRK_FORCELUNS) == 0)
   1012 		periph->periph_quirks |= PQUIRK_NOLUNS;
   1013 
   1014 	if ((periph->periph_quirks & PQUIRK_NOLUNS) == 0)
   1015 		docontinue = 1;
   1016 
   1017 	locs[SCSIBUSCF_TARGET] = target;
   1018 	locs[SCSIBUSCF_LUN] = lun;
   1019 
   1020 	if ((cf = config_search_loc(config_stdsubmatch, sc->sc_dev,
   1021 	     "scsibus", locs, &sa)) != NULL) {
   1022 		scsipi_insert_periph(chan, periph);
   1023 
   1024 		/*
   1025 		 * Determine supported opcodes and timeouts if available.
   1026 		 * Only do this on peripherals reporting SCSI version 3
   1027 		 * or greater - this command isn't in the SCSI-2 spec. and
   1028 		 * it causes either timeouts or peripherals disappearing
   1029 		 * when sent to some SCSI-1 or SCSI-2 peripherals.
   1030 		 */
   1031 		if (periph->periph_version >= 3)
   1032 			scsipi_get_opcodeinfo(periph);
   1033 
   1034 		/*
   1035 		 * XXX Can't assign periph_dev here, because we'll
   1036 		 * XXX need it before config_attach() returns.  Must
   1037 		 * XXX assign it in periph driver.
   1038 		 */
   1039 		config_attach_loc(sc->sc_dev, cf, locs, &sa,
   1040 					 scsibusprint);
   1041 	} else {
   1042 		scsibusprint(&sa, device_xname(sc->sc_dev));
   1043 		aprint_normal(" not configured\n");
   1044 		goto bad;
   1045 	}
   1046 
   1047 	return (docontinue);
   1048 
   1049 bad:
   1050 	scsipi_free_periph(periph);
   1051 	return (docontinue);
   1052 }
   1053 
   1054 /****** Entry points for user control of the SCSI bus. ******/
   1055 
   1056 static int
   1057 scsibusopen(dev_t dev, int flag, int fmt,
   1058     struct lwp *l)
   1059 {
   1060 	struct scsibus_softc *sc;
   1061 	int error, unit = minor(dev);
   1062 
   1063 	sc = device_lookup_private(&scsibus_cd, unit);
   1064 	if (sc == NULL)
   1065 		return (ENXIO);
   1066 
   1067 	if (sc->sc_flags & SCSIBUSF_OPEN)
   1068 		return (EBUSY);
   1069 
   1070 	if ((error = scsipi_adapter_addref(sc->sc_channel->chan_adapter)) != 0)
   1071 		return (error);
   1072 
   1073 	sc->sc_flags |= SCSIBUSF_OPEN;
   1074 
   1075 	return (0);
   1076 }
   1077 
   1078 static int
   1079 scsibusclose(dev_t dev, int flag, int fmt,
   1080     struct lwp *l)
   1081 {
   1082 	struct scsibus_softc *sc;
   1083 
   1084 	sc = device_lookup_private(&scsibus_cd, minor(dev));
   1085 	scsipi_adapter_delref(sc->sc_channel->chan_adapter);
   1086 
   1087 	sc->sc_flags &= ~SCSIBUSF_OPEN;
   1088 
   1089 	return (0);
   1090 }
   1091 
   1092 static int
   1093 scsibusioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
   1094 {
   1095 	struct scsibus_softc *sc;
   1096 	struct scsipi_channel *chan;
   1097 	int error;
   1098 
   1099 	sc = device_lookup_private(&scsibus_cd, minor(dev));
   1100 	chan = sc->sc_channel;
   1101 
   1102 	/*
   1103 	 * Enforce write permission for ioctls that change the
   1104 	 * state of the bus.  Host adapter specific ioctls must
   1105 	 * be checked by the adapter driver.
   1106 	 */
   1107 	switch (cmd) {
   1108 	case SCBUSIOSCAN:
   1109 	case SCBUSIODETACH:
   1110 	case SCBUSIORESET:
   1111 		if ((flag & FWRITE) == 0)
   1112 			return (EBADF);
   1113 	}
   1114 
   1115 	switch (cmd) {
   1116 	case SCBUSIOSCAN:
   1117 	    {
   1118 		struct scbusioscan_args *a =
   1119 		    (struct scbusioscan_args *)addr;
   1120 
   1121 		error = scsi_probe_bus(sc, a->sa_target, a->sa_lun);
   1122 		break;
   1123 	    }
   1124 
   1125 	case SCBUSIODETACH:
   1126 	    {
   1127 		struct scbusiodetach_args *a =
   1128 		    (struct scbusiodetach_args *)addr;
   1129 
   1130 		error = scsipi_target_detach(chan, a->sa_target, a->sa_lun, 0);
   1131 		break;
   1132 	    }
   1133 
   1134 
   1135 	case SCBUSIORESET:
   1136 		/* FALLTHROUGH */
   1137 	default:
   1138 		error = scsipi_adapter_ioctl(chan, cmd, addr, flag, l->l_proc);
   1139 		break;
   1140 	}
   1141 
   1142 	return (error);
   1143 }
   1144