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scsiconf.c revision 1.53
      1 /*	$NetBSD: scsiconf.c,v 1.53 1996/03/17 00:59:47 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Charles Hannum.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Charles Hannum.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * Originally written by Julian Elischer (julian (at) tfs.com)
     34  * for TRW Financial Systems for use under the MACH(2.5) operating system.
     35  *
     36  * TRW Financial Systems, in accordance with their agreement with Carnegie
     37  * Mellon University, makes this software available to CMU to distribute
     38  * or use in any manner that they see fit as long as this message is kept with
     39  * the software. For this reason TFS also grants any other persons or
     40  * organisations permission to use or modify this software.
     41  *
     42  * TFS supplies this software to be publicly redistributed
     43  * on the understanding that TFS is not responsible for the correct
     44  * functioning of this software in any circumstances.
     45  *
     46  * Ported to run under 386BSD by Julian Elischer (julian (at) tfs.com) Sept 1992
     47  */
     48 
     49 #include <sys/types.h>
     50 #include <sys/param.h>
     51 #include <sys/systm.h>
     52 #include <sys/malloc.h>
     53 #include <sys/device.h>
     54 #include <sys/cpu.h>
     55 
     56 #include <scsi/scsi_all.h>
     57 #include <scsi/scsiconf.h>
     58 
     59 #if 0
     60 #if NCALS > 0
     61 	{ T_PROCESSOR, T_FIXED, 1,
     62 	  0, 0, 0 },
     63 #endif	/* NCALS */
     64 #if NBLL > 0
     65 	{ T_PROCESSOR, T_FIXED, 1,
     66 	  "AEG     ", "READER          ", "V1.0" },
     67 #endif	/* NBLL */
     68 #if NKIL > 0
     69 	{ T_SCANNER, T_FIXED, 0,
     70 	  "KODAK   ", "IL Scanner 900  ", 0 },
     71 #endif	/* NKIL */
     72 #endif
     73 
     74 /*
     75  * Declarations
     76  */
     77 void scsi_probedev __P((struct scsibus_softc *, int, int));
     78 int scsi_probe_bus __P((int bus, int target, int lun));
     79 
     80 struct scsi_device probe_switch = {
     81 	NULL,
     82 	NULL,
     83 	NULL,
     84 	NULL,
     85 };
     86 
     87 int scsibusmatch __P((struct device *, void *, void *));
     88 void scsibusattach __P((struct device *, struct device *, void *));
     89 int scsibussubmatch __P((struct device *, void *, void *));
     90 
     91 struct cfattach scsibus_ca = {
     92 	sizeof(struct scsibus_softc), scsibusmatch, scsibusattach
     93 };
     94 
     95 struct cfdriver scsibus_cd = {
     96 	NULL, "scsibus", DV_DULL
     97 };
     98 
     99 int scsibusprint __P((void *, char *));
    100 
    101 int
    102 scsibusmatch(parent, match, aux)
    103         struct device *parent;
    104         void *match, *aux;
    105 {
    106 
    107 	return 1;
    108 }
    109 
    110 /*
    111  * The routine called by the adapter boards to get all their
    112  * devices configured in.
    113  */
    114 void
    115 scsibusattach(parent, self, aux)
    116         struct device *parent, *self;
    117         void *aux;
    118 {
    119 	struct scsibus_softc *sb = (struct scsibus_softc *)self;
    120 	struct scsi_link *sc_link_proto = aux;
    121 
    122 	sc_link_proto->scsibus = sb->sc_dev.dv_unit;
    123 	sb->adapter_link = sc_link_proto;
    124 	printf("\n");
    125 
    126 #if defined(SCSI_DELAY) && SCSI_DELAY > 2
    127 	printf("%s: waiting for scsi devices to settle\n",
    128 		sb->sc_dev.dv_xname);
    129 #else	/* SCSI_DELAY > 2 */
    130 #undef	SCSI_DELAY
    131 #define SCSI_DELAY 2
    132 #endif	/* SCSI_DELAY */
    133 	delay(1000000 * SCSI_DELAY);
    134 
    135 	scsi_probe_bus(sb->sc_dev.dv_unit, -1, -1);
    136 }
    137 
    138 int
    139 scsibussubmatch(parent, match, aux)
    140 	struct device *parent;
    141 	void *match, *aux;
    142 {
    143 	struct cfdata *cf = match;
    144 	struct scsibus_attach_args *sa = aux;
    145 	struct scsi_link *sc_link = sa->sa_sc_link;
    146 
    147 	if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != sc_link->target)
    148 		return 0;
    149 	if (cf->cf_loc[1] != -1 && cf->cf_loc[1] != sc_link->lun)
    150 		return 0;
    151 	return ((*cf->cf_attach->ca_match)(parent, match, aux));
    152 }
    153 
    154 /*
    155  * Probe the requested scsi bus. It must be already set up.
    156  * -1 requests all set up scsi busses.
    157  * target and lun optionally narrow the search if not -1
    158  */
    159 int
    160 scsi_probe_busses(bus, target, lun)
    161 	int bus, target, lun;
    162 {
    163 
    164 	if (bus == -1) {
    165 		for (bus = 0; bus < scsibus_cd.cd_ndevs; bus++)
    166 			if (scsibus_cd.cd_devs[bus])
    167 				scsi_probe_bus(bus, target, lun);
    168 		return 0;
    169 	} else {
    170 		return scsi_probe_bus(bus, target, lun);
    171 	}
    172 }
    173 
    174 /*
    175  * Probe the requested scsi bus. It must be already set up.
    176  * target and lun optionally narrow the search if not -1
    177  */
    178 int
    179 scsi_probe_bus(bus, target, lun)
    180 	int bus, target, lun;
    181 {
    182 	struct scsibus_softc *scsi;
    183 	int maxtarget, mintarget, maxlun, minlun;
    184 	u_int8_t scsi_addr;
    185 
    186 	if (bus < 0 || bus >= scsibus_cd.cd_ndevs)
    187 		return ENXIO;
    188 	scsi = scsibus_cd.cd_devs[bus];
    189 	if (!scsi)
    190 		return ENXIO;
    191 
    192 	scsi_addr = scsi->adapter_link->adapter_target;
    193 
    194 	if (target == -1) {
    195 		maxtarget = 7;
    196 		mintarget = 0;
    197 	} else {
    198 		if (target < 0 || target > 7)
    199 			return EINVAL;
    200 		maxtarget = mintarget = target;
    201 	}
    202 
    203 	if (lun == -1) {
    204 		maxlun = 7;
    205 		minlun = 0;
    206 	} else {
    207 		if (lun < 0 || lun > 7)
    208 			return EINVAL;
    209 		maxlun = minlun = lun;
    210 	}
    211 
    212 	for (target = mintarget; target <= maxtarget; target++) {
    213 		if (target == scsi_addr)
    214 			continue;
    215 		for (lun = minlun; lun <= maxlun; lun++) {
    216 			/*
    217 			 * See if there's a device present, and configure it.
    218 			 */
    219 			scsi_probedev(scsi, target, lun);
    220 			if ((scsi->moreluns & (1 << target)) == 0)
    221 				break;
    222 			/* otherwise something says we should look further */
    223 		}
    224 	}
    225 	return 0;
    226 }
    227 
    228 void
    229 scsi_strvis(dst, src, len)
    230 	u_char *dst, *src;
    231 	int len;
    232 {
    233 
    234 	/* Trim leading and trailing blanks and NULs. */
    235 	while (len > 0 && (src[0] == ' ' || src[0] == '\0'))
    236 		++src, --len;
    237 	while (len > 0 && (src[len-1] == ' ' || src[len-1] == '\0'))
    238 		--len;
    239 
    240 	while (len > 0) {
    241 		if (*src < 0x20 || *src >= 0x80) {
    242 			/* non-printable characters */
    243 			*dst++ = '\\';
    244 			*dst++ = ((*src & 0300) >> 6) + '0';
    245 			*dst++ = ((*src & 0070) >> 3) + '0';
    246 			*dst++ = ((*src & 0007) >> 0) + '0';
    247 		} else if (*src == '\\') {
    248 			/* quote characters */
    249 			*dst++ = '\\';
    250 			*dst++ = '\\';
    251 		} else {
    252 			/* normal characters */
    253 			*dst++ = *src;
    254 		}
    255 		++src, --len;
    256 	}
    257 
    258 	*dst++ = 0;
    259 }
    260 
    261 struct scsi_quirk_inquiry_pattern {
    262 	struct scsi_inquiry_pattern pattern;
    263 	u_int8_t quirks;
    264 };
    265 
    266 struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
    267 	{{T_CDROM, T_REMOV,
    268 	 "CHINON  ", "CD-ROM CDS-431  ", ""},     SDEV_NOLUNS},
    269 	{{T_CDROM, T_REMOV,
    270 	 "Chinon  ", "CD-ROM CDS-525  ", ""},     SDEV_NOLUNS},
    271 	{{T_CDROM, T_REMOV,
    272 	 "CHINON  ", "CD-ROM CDS-535  ", ""},     SDEV_NOLUNS},
    273 	{{T_CDROM, T_REMOV,
    274 	 "DENON   ", "DRD-25X         ", "V"},    SDEV_NOLUNS},
    275 	{{T_CDROM, T_REMOV,
    276 	 "IMS     ", "CDD521/10       ", "2.06"}, SDEV_NOLUNS},
    277 	{{T_CDROM, T_REMOV,
    278 	 "MEDIAVIS", "CDR-H93MV       ", "1.31"}, SDEV_NOLUNS},
    279 	{{T_CDROM, T_REMOV,
    280 	 "NEC     ", "CD-ROM DRIVE:55 ", ""},     SDEV_NOLUNS},
    281 	{{T_CDROM, T_REMOV,
    282 	 "NEC     ", "CD-ROM DRIVE:83 ", ""},     SDEV_NOLUNS},
    283 	{{T_CDROM, T_REMOV,
    284 	 "NEC     ", "CD-ROM DRIVE:84 ", ""},     SDEV_NOLUNS},
    285 	{{T_CDROM, T_REMOV,
    286 	 "NEC     ", "CD-ROM DRIVE:841", ""},     SDEV_NOLUNS},
    287 	{{T_CDROM, T_REMOV,
    288 	 "SONY    ", "CD-ROM CDU-541  ", ""},     SDEV_NOLUNS},
    289 	{{T_CDROM, T_REMOV,
    290 	 "SONY    ", "CD-ROM CDU-55S  ", ""},     SDEV_NOLUNS},
    291 	{{T_CDROM, T_REMOV,
    292 	 "SONY    ", "CD-ROM CDU-8003A", ""},     SDEV_NOLUNS},
    293 	{{T_CDROM, T_REMOV,
    294 	 "SONY    ", "CD-ROM CDU-8012 ", ""},     SDEV_NOLUNS},
    295 	{{T_CDROM, T_REMOV,
    296 	 "TEAC    ", "CD-ROM          ", "1.06"}, SDEV_NOLUNS},
    297 	{{T_CDROM, T_REMOV,
    298 	 "TEXEL   ", "CD-ROM          ", "1.06"}, SDEV_NOLUNS},
    299 	{{T_CDROM, T_REMOV,
    300 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, SDEV_NOLUNS},
    301 
    302 	{{T_DIRECT, T_FIXED,
    303 	 "DEC     ", "RZ55     (C) DEC", ""},     SDEV_AUTOSAVE},
    304 	{{T_DIRECT, T_FIXED,
    305 	 "EMULEX  ", "MD21/S2     ESDI", "A00"},  SDEV_FORCELUNS},
    306 	{{T_DIRECT, T_FIXED,
    307 	 "MAXTOR  ", "XT-3280         ", ""},     SDEV_NOLUNS},
    308 	{{T_DIRECT, T_FIXED,
    309 	 "MAXTOR  ", "XT-4380S        ", ""},     SDEV_NOLUNS},
    310 	{{T_DIRECT, T_FIXED,
    311 	 "MAXTOR  ", "MXT-1240S       ", ""},     SDEV_NOLUNS},
    312 	{{T_DIRECT, T_FIXED,
    313 	 "MAXTOR  ", "XT-4170S        ", ""},     SDEV_NOLUNS},
    314 	{{T_DIRECT, T_FIXED,
    315 	 "MAXTOR  ", "XT-8760S        ", ""},     SDEV_NOLUNS},
    316 	{{T_DIRECT, T_FIXED,
    317 	 "MAXTOR  ", "LXT-213S        ", ""},     SDEV_NOLUNS},
    318 	{{T_DIRECT, T_FIXED,
    319 	 "MAXTOR  ", "LXT-213S SUN0207", ""},     SDEV_NOLUNS},
    320 	{{T_DIRECT, T_FIXED,
    321 	 "MAXTOR  ", "LXT-200S        ", ""},     SDEV_NOLUNS},
    322 	{{T_DIRECT, T_FIXED,
    323 	 "MST     ", "SnapLink        ", ""},     SDEV_NOLUNS},
    324 	{{T_DIRECT, T_FIXED,
    325 	 "QUANTUM ", "LPS525S         ", ""},     SDEV_NOLUNS},
    326 	{{T_DIRECT, T_FIXED,
    327 	 "QUANTUM ", "P105S 910-10-94x", ""},     SDEV_NOLUNS},
    328 	{{T_DIRECT, T_FIXED,
    329 	 "QUANTUM ", "PD1225S         ", ""},     SDEV_NOLUNS},
    330 	{{T_DIRECT, T_FIXED,
    331 	 "QUANTUM ", "PD210S   SUN0207", ""},     SDEV_NOLUNS},
    332 	{{T_DIRECT, T_FIXED,
    333 	 "RODIME  ", "RO3000S         ", ""},     SDEV_NOLUNS},
    334 	{{T_DIRECT, T_FIXED,
    335 	 "SEAGATE ", "ST157N          ", ""},     SDEV_NOLUNS},
    336 	{{T_DIRECT, T_FIXED,
    337 	 "SEAGATE ", "ST296           ", ""},     SDEV_NOLUNS},
    338 	{{T_DIRECT, T_FIXED,
    339 	 "SEAGATE ", "ST296N          ", ""},     SDEV_NOLUNS},
    340 	{{T_DIRECT, T_FIXED,
    341 	 "TOSHIBA ", "MK538FB         ", "6027"}, SDEV_NOLUNS},
    342 
    343 	/* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
    344 	{{T_SEQUENTIAL, T_REMOV,
    345 	 "        ", "                ", "    "}, SDEV_NOLUNS},
    346 	{{T_SEQUENTIAL, T_REMOV,
    347 	 "CALIPER ", "CP150           ", ""},     SDEV_NOLUNS},
    348 	{{T_SEQUENTIAL, T_REMOV,
    349 	 "EXABYTE ", "EXB-8200        ", ""},     SDEV_NOLUNS},
    350 	{{T_SEQUENTIAL, T_REMOV,
    351 	 "SONY    ", "SDT-2000        ", "2.09"}, SDEV_NOLUNS},
    352 	{{T_SEQUENTIAL, T_REMOV,
    353 	 "SONY    ", "SDT-5000        ", "3."},   SDEV_NOSYNCWIDE},
    354 	{{T_SEQUENTIAL, T_REMOV,
    355 	 "SONY    ", "SDT-5200        ", "3."},   SDEV_NOLUNS},
    356 	{{T_SEQUENTIAL, T_REMOV,
    357 	 "TANDBERG", " TDC 3600       ", ""},     SDEV_NOLUNS},
    358 	/* Following entry reported as a Tandberg 3600; ref. PR1933 */
    359 	{{T_SEQUENTIAL, T_REMOV,
    360 	 "ARCHIVE ", "VIPER 150  21247", ""},     SDEV_NOLUNS},
    361 	{{T_SEQUENTIAL, T_REMOV,
    362 	 "WANGTEK ", "5099ES SCSI",      ""},     SDEV_NOLUNS},
    363 	{{T_SEQUENTIAL, T_REMOV,
    364 	 "WANGTEK ", "5150ES SCSI",      ""},     SDEV_NOLUNS},
    365 	{{T_SEQUENTIAL, T_REMOV,
    366 	 "WangDAT ", "Model 1300      ", "02.4"}, SDEV_NOSYNCWIDE},
    367 	{{T_SEQUENTIAL, T_REMOV,
    368 	 "WangDAT ", "Model 2600      ", "01.7"}, SDEV_NOSYNCWIDE},
    369 	{{T_SEQUENTIAL, T_REMOV,
    370 	 "WangDAT ", "Model 3200      ", "02.2"}, SDEV_NOSYNCWIDE},
    371 };
    372 
    373 /*
    374  * Print out autoconfiguration information for a subdevice.
    375  *
    376  * This is a slight abuse of 'standard' autoconfiguration semantics,
    377  * because 'print' functions don't normally print the colon and
    378  * device information.  However, in this case that's better than
    379  * either printing redundant information before the attach message,
    380  * or having the device driver call a special function to print out
    381  * the standard device information.
    382  */
    383 int
    384 scsibusprint(aux, pnp)
    385 	void *aux;
    386 	char *pnp;
    387 {
    388 	struct scsibus_attach_args *sa = aux;
    389 	struct scsi_inquiry_data *inqbuf;
    390 	u_int8_t type;
    391 	boolean removable;
    392 	char *dtype, *qtype;
    393 	char vendor[33], product[65], revision[17];
    394 	int target, lun;
    395 
    396 	if (pnp != NULL)
    397 		printf("%s", pnp);
    398 
    399 	inqbuf = sa->sa_inqbuf;
    400 
    401         target = sa->sa_sc_link->target;
    402         lun = sa->sa_sc_link->lun;
    403 
    404         type = inqbuf->device & SID_TYPE;
    405         removable = inqbuf->dev_qual2 & SID_REMOVABLE ? 1 : 0;
    406 
    407 	/*
    408 	 * Figure out basic device type and qualifier.
    409 	 */
    410 	dtype = 0;
    411 	switch (inqbuf->device & SID_QUAL) {
    412 	case SID_QUAL_LU_OK:
    413 		qtype = "";
    414 		break;
    415 
    416 	case SID_QUAL_LU_OFFLINE:
    417 		qtype = " offline";
    418 		break;
    419 
    420 	case SID_QUAL_RSVD:
    421 	case SID_QUAL_BAD_LU:
    422 		panic("scsibusprint: impossible qualifier");
    423 
    424 	default:
    425 		qtype = "";
    426 		dtype = "vendor-unique";
    427 		break;
    428 	}
    429 	if (dtype == 0) {
    430 		switch (type) {
    431 		case T_DIRECT:
    432 			dtype = "direct";
    433 			break;
    434 		case T_SEQUENTIAL:
    435 			dtype = "sequential";
    436 			break;
    437 		case T_PRINTER:
    438 			dtype = "printer";
    439 			break;
    440 		case T_PROCESSOR:
    441 			dtype = "processor";
    442 			break;
    443 		case T_CDROM:
    444 			dtype = "cdrom";
    445 			break;
    446 		case T_WORM:
    447 			dtype = "worm";
    448 			break;
    449 		case T_SCANNER:
    450 			dtype = "scanner";
    451 			break;
    452 		case T_OPTICAL:
    453 			dtype = "optical";
    454 			break;
    455 		case T_CHANGER:
    456 			dtype = "changer";
    457 			break;
    458 		case T_COMM:
    459 			dtype = "communication";
    460 			break;
    461 		case T_NODEVICE:
    462 			panic("scsibusprint: impossible device type");
    463 		default:
    464 			dtype = "unknown";
    465 			break;
    466 		}
    467 	}
    468 
    469         scsi_strvis(vendor, inqbuf->vendor, 8);
    470         scsi_strvis(product, inqbuf->product, 16);
    471         scsi_strvis(revision, inqbuf->revision, 4);
    472 
    473         printf(" targ %d lun %d: <%s, %s, %s> SCSI%d %d/%s %s%s",
    474             target, lun, vendor, product, revision,
    475             inqbuf->version & SID_ANSII, type, dtype,
    476             removable ? "removable" : "fixed", qtype);
    477 
    478 	return (UNCONF);
    479 }
    480 
    481 /*
    482  * given a target and lu, ask the device what
    483  * it is, and find the correct driver table
    484  * entry.
    485  */
    486 void
    487 scsi_probedev(scsi, target, lun)
    488 	struct scsibus_softc *scsi;
    489 	int target, lun;
    490 {
    491 	struct scsi_link *sc_link;
    492 	static struct scsi_inquiry_data inqbuf;
    493 	struct scsi_quirk_inquiry_pattern *finger;
    494 	int checkdtype, priority;
    495 	struct scsibus_attach_args sa;
    496 	struct cfdata *cf;
    497 
    498 	/* Skip this slot if it is already attached. */
    499 	if (scsi->sc_link[target][lun])
    500 		return;
    501 
    502 	sc_link = malloc(sizeof(*sc_link), M_DEVBUF, M_NOWAIT);
    503 	*sc_link = *scsi->adapter_link;
    504 	sc_link->target = target;
    505 	sc_link->lun = lun;
    506 	sc_link->device = &probe_switch;
    507 
    508 	/*
    509 	 * Ask the device what it is
    510 	 */
    511 #ifdef SCSIDEBUG
    512 	if (target == DEBUGTARGET && lun == DEBUGLUN)
    513 		sc_link->flags |= DEBUGLEVEL;
    514 #endif /* SCSIDEBUG */
    515 
    516 	(void) scsi_test_unit_ready(sc_link,
    517 	    SCSI_AUTOCONF | SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_NOT_READY | SCSI_IGNORE_MEDIA_CHANGE);
    518 
    519 #ifdef SCSI_2_DEF
    520 	/* some devices need to be told to go to SCSI2 */
    521 	/* However some just explode if you tell them this.. leave it out */
    522 	scsi_change_def(sc_link, SCSI_AUTOCONF | SCSI_SILENT);
    523 #endif /* SCSI_2_DEF */
    524 
    525 	/* Now go ask the device all about itself. */
    526 	bzero(&inqbuf, sizeof(inqbuf));
    527 	if (scsi_inquire(sc_link, &inqbuf, SCSI_AUTOCONF) != 0)
    528 		goto bad;
    529 
    530 	{
    531 		int len = inqbuf.additional_length;
    532 		while (len < 3)
    533 			inqbuf.unused[len++] = '\0';
    534 		while (len < 3 + 28)
    535 			inqbuf.unused[len++] = ' ';
    536 	}
    537 
    538 	finger = (struct scsi_quirk_inquiry_pattern *)scsi_inqmatch(&inqbuf,
    539 	    (caddr_t)scsi_quirk_patterns,
    540 	    sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
    541 	    sizeof(scsi_quirk_patterns[0]), &priority);
    542 	if (priority != 0)
    543 		sc_link->quirks |= finger->quirks;
    544 	if ((inqbuf.version & SID_ANSII) == 0 &&
    545 	    (sc_link->quirks & SDEV_FORCELUNS) == 0)
    546 		sc_link->quirks |= SDEV_NOLUNS;
    547 
    548 	if ((sc_link->quirks & SDEV_NOLUNS) == 0)
    549 		scsi->moreluns |= (1 << target);
    550 
    551 	/*
    552 	 * note what BASIC type of device it is
    553 	 */
    554 	if ((inqbuf.dev_qual2 & SID_REMOVABLE) != 0)
    555 		sc_link->flags |= SDEV_REMOVABLE;
    556 
    557 	/*
    558 	 * Any device qualifier that has the top bit set (qualifier&4 != 0)
    559 	 * is vendor specific and won't match in this switch.
    560 	 * All we do here is throw out bad/negative responses.
    561 	 */
    562 	checkdtype = 0;
    563 	switch (inqbuf.device & SID_QUAL) {
    564 	case SID_QUAL_LU_OK:
    565 	case SID_QUAL_LU_OFFLINE:
    566 		checkdtype = 1;
    567 		break;
    568 
    569 	case SID_QUAL_RSVD:
    570 	case SID_QUAL_BAD_LU:
    571 		goto bad;
    572 
    573 	default:
    574 		break;
    575 	}
    576 	if (checkdtype) {
    577 		switch (inqbuf.device & SID_TYPE) {
    578 		case T_DIRECT:
    579 		case T_SEQUENTIAL:
    580 		case T_PRINTER:
    581 		case T_PROCESSOR:
    582 		case T_CDROM:
    583 		case T_WORM:
    584 		case T_SCANNER:
    585 		case T_OPTICAL:
    586 		case T_CHANGER:
    587 		case T_COMM:
    588 		default:
    589 			break;
    590 		case T_NODEVICE:
    591 			goto bad;
    592 		}
    593 	}
    594 
    595 	sa.sa_sc_link = sc_link;
    596 	sa.sa_inqbuf = &inqbuf;
    597 
    598 	if ((cf = config_search(scsibussubmatch, (struct device *)scsi, &sa)) != 0) {
    599 		scsi->sc_link[target][lun] = sc_link;
    600 		config_attach((struct device *)scsi, cf, &sa, scsibusprint);
    601 	} else {
    602 		scsibusprint(&sa, scsi->sc_dev.dv_xname);
    603 		printf(" not configured\n");
    604 		goto bad;
    605 	}
    606 
    607 	return;
    608 
    609 bad:
    610 	free(sc_link, M_DEVBUF);
    611 	return;
    612 }
    613 
    614 /*
    615  * Return a priority based on how much of the inquiry data matches
    616  * the patterns for the particular driver.
    617  */
    618 caddr_t
    619 scsi_inqmatch(inqbuf, base, nmatches, matchsize, bestpriority)
    620 	struct scsi_inquiry_data *inqbuf;
    621 	caddr_t base;
    622 	int nmatches, matchsize;
    623 	int *bestpriority;
    624 {
    625 	u_int8_t type;
    626 	boolean removable;
    627 	caddr_t bestmatch;
    628 
    629 	/* Include the qualifier to catch vendor-unique types. */
    630 	type = inqbuf->device;
    631 	removable = inqbuf->dev_qual2 & SID_REMOVABLE ? T_REMOV : T_FIXED;
    632 
    633 	for (*bestpriority = 0, bestmatch = 0; nmatches--; base += matchsize) {
    634 		struct scsi_inquiry_pattern *match = (void *)base;
    635 		int priority, len;
    636 
    637 		if (type != match->type)
    638 			continue;
    639 		if (removable != match->removable)
    640 			continue;
    641 		priority = 2;
    642 		len = strlen(match->vendor);
    643 		if (bcmp(inqbuf->vendor, match->vendor, len))
    644 			continue;
    645 		priority += len;
    646 		len = strlen(match->product);
    647 		if (bcmp(inqbuf->product, match->product, len))
    648 			continue;
    649 		priority += len;
    650 		len = strlen(match->revision);
    651 		if (bcmp(inqbuf->revision, match->revision, len))
    652 			continue;
    653 		priority += len;
    654 
    655 #if SCSIDEBUG
    656 		printf("scsi_inqmatch: %d/%d/%d <%s, %s, %s>\n",
    657 		    priority, match->type, match->removable,
    658 		    match->vendor, match->product, match->revision);
    659 #endif
    660 		if (priority > *bestpriority) {
    661 			*bestpriority = priority;
    662 			bestmatch = base;
    663 		}
    664 	}
    665 
    666 	return (bestmatch);
    667 }
    668