xref: /netbsd-src/sys/dev/scsipi/scsiconf.c (revision 001c68bd94f75ce9270b69227c4199fbf34ee396)
1 /*	$NetBSD: scsiconf.c,v 1.207 2003/06/29 22:30:40 fvdl Exp $	*/
2 
3 /*-
4  * Copyright (c) 1998, 1999 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  * 3. All advertising materials mentioning features or use of this software
20  *    must display the following acknowledgement:
21  *        This product includes software developed by the NetBSD
22  *        Foundation, Inc. and its contributors.
23  * 4. Neither the name of The NetBSD Foundation nor the names of its
24  *    contributors may be used to endorse or promote products derived
25  *    from this software without specific prior written permission.
26  *
27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37  * POSSIBILITY OF SUCH DAMAGE.
38  */
39 
40 /*
41  * Originally written by Julian Elischer (julian@tfs.com)
42  * for TRW Financial Systems for use under the MACH(2.5) operating system.
43  *
44  * TRW Financial Systems, in accordance with their agreement with Carnegie
45  * Mellon University, makes this software available to CMU to distribute
46  * or use in any manner that they see fit as long as this message is kept with
47  * the software. For this reason TFS also grants any other persons or
48  * organisations permission to use or modify this software.
49  *
50  * TFS supplies this software to be publicly redistributed
51  * on the understanding that TFS is not responsible for the correct
52  * functioning of this software in any circumstances.
53  *
54  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
55  */
56 
57 #include <sys/cdefs.h>
58 __KERNEL_RCSID(0, "$NetBSD: scsiconf.c,v 1.207 2003/06/29 22:30:40 fvdl Exp $");
59 
60 #include <sys/param.h>
61 #include <sys/systm.h>
62 #include <sys/kernel.h>
63 #include <sys/proc.h>
64 #include <sys/kthread.h>
65 #include <sys/malloc.h>
66 #include <sys/device.h>
67 #include <sys/conf.h>
68 #include <sys/fcntl.h>
69 #include <sys/scsiio.h>
70 #include <sys/queue.h>
71 #include <sys/lock.h>
72 
73 #include <dev/scsipi/scsi_all.h>
74 #include <dev/scsipi/scsipi_all.h>
75 #include <dev/scsipi/scsiconf.h>
76 
77 #include "locators.h"
78 
79 const struct scsipi_periphsw scsi_probe_dev = {
80 	NULL,
81 	NULL,
82 	NULL,
83 	NULL,
84 };
85 
86 struct scsi_initq {
87 	struct scsipi_channel *sc_channel;
88 	TAILQ_ENTRY(scsi_initq) scsi_initq;
89 };
90 
91 static TAILQ_HEAD(, scsi_initq) scsi_initq_head =
92     TAILQ_HEAD_INITIALIZER(scsi_initq_head);
93 static struct simplelock scsibus_interlock = SIMPLELOCK_INITIALIZER;
94 
95 int	scsi_probe_device __P((struct scsibus_softc *, int, int));
96 
97 int	scsibusmatch __P((struct device *, struct cfdata *, void *));
98 void	scsibusattach __P((struct device *, struct device *, void *));
99 int	scsibusactivate __P((struct device *, enum devact));
100 int	scsibusdetach __P((struct device *, int flags));
101 
102 int	scsibussubmatch __P((struct device *, struct cfdata *, void *));
103 
104 CFATTACH_DECL(scsibus, sizeof(struct scsibus_softc),
105     scsibusmatch, scsibusattach, scsibusdetach, scsibusactivate);
106 
107 extern struct cfdriver scsibus_cd;
108 
109 dev_type_open(scsibusopen);
110 dev_type_close(scsibusclose);
111 dev_type_ioctl(scsibusioctl);
112 
113 const struct cdevsw scsibus_cdevsw = {
114 	scsibusopen, scsibusclose, noread, nowrite, scsibusioctl,
115 	nostop, notty, nopoll, nommap, nokqfilter,
116 };
117 
118 int	scsibusprint __P((void *, const char *));
119 void	scsibus_config __P((struct scsipi_channel *, void *));
120 
121 const struct scsipi_bustype scsi_bustype = {
122 	SCSIPI_BUSTYPE_SCSI,
123 	scsi_scsipi_cmd,
124 	scsipi_interpret_sense,
125 	scsi_print_addr,
126 	scsi_kill_pending,
127 };
128 
129 int
130 scsiprint(aux, pnp)
131 	void *aux;
132 	const char *pnp;
133 {
134 	struct scsipi_channel *chan = aux;
135 	struct scsipi_adapter *adapt = chan->chan_adapter;
136 
137 	/* only "scsibus"es can attach to "scsi"s; easy. */
138 	if (pnp)
139 		aprint_normal("scsibus at %s", pnp);
140 
141 	/* don't print channel if the controller says there can be only one. */
142 	if (adapt->adapt_nchannels != 1)
143 		aprint_normal(" channel %d", chan->chan_channel);
144 
145 	return (UNCONF);
146 }
147 
148 int
149 scsibusmatch(parent, cf, aux)
150 	struct device *parent;
151 	struct cfdata *cf;
152 	void *aux;
153 {
154 	struct scsipi_channel *chan = aux;
155 
156 	if (chan->chan_bustype->bustype_type != SCSIPI_BUSTYPE_SCSI)
157 		return 0;
158 
159 	if (cf->cf_loc[SCSICF_CHANNEL] != chan->chan_channel &&
160 	    cf->cf_loc[SCSICF_CHANNEL] != SCSICF_CHANNEL_DEFAULT)
161 		return (0);
162 
163 	return (1);
164 }
165 
166 void
167 scsibusattach(parent, self, aux)
168 	struct device *parent, *self;
169 	void *aux;
170 {
171 	struct scsibus_softc *sc = (void *) self;
172 	struct scsipi_channel *chan = aux;
173 	struct scsi_initq *scsi_initq;
174 
175 	sc->sc_channel = chan;
176 	chan->chan_name = sc->sc_dev.dv_xname;
177 
178 	aprint_naive(": SCSI bus\n");
179 	aprint_normal(": %d target%s, %d lun%s per target\n",
180 	    chan->chan_ntargets,
181 	    chan->chan_ntargets == 1 ? "" : "s",
182 	    chan->chan_nluns,
183 	    chan->chan_nluns == 1 ? "" : "s");
184 
185 	/* Initialize the channel structure first */
186 	chan->chan_init_cb = scsibus_config;
187 	chan->chan_init_cb_arg = sc;
188 
189 	scsi_initq = malloc(sizeof(struct scsi_initq), M_DEVBUF, M_WAITOK);
190 	scsi_initq->sc_channel = chan;
191 	TAILQ_INSERT_TAIL(&scsi_initq_head, scsi_initq, scsi_initq);
192         config_pending_incr();
193 	if (scsipi_channel_init(chan)) {
194 		aprint_error("%s: failed to init channel\n",
195 		    sc->sc_dev.dv_xname);
196 		return;
197 	}
198 }
199 
200 void
201 scsibus_config(chan, arg)
202 	struct scsipi_channel *chan;
203 	void *arg;
204 {
205 	struct scsibus_softc *sc = arg;
206 	struct scsi_initq *scsi_initq;
207 
208 #ifndef SCSI_DELAY
209 #define SCSI_DELAY 2
210 #endif
211 	if ((chan->chan_flags & SCSIPI_CHAN_NOSETTLE) == 0 &&
212 	    SCSI_DELAY > 0) {
213 		aprint_normal(
214 		    "%s: waiting %d seconds for devices to settle...\n",
215 		    sc->sc_dev.dv_xname, SCSI_DELAY);
216 		/* ...an identifier we know no one will use... */
217 		(void) tsleep(scsibus_config, PRIBIO,
218 		    "scsidly", SCSI_DELAY * hz);
219 	}
220 
221 	/* Make sure the devices probe in scsibus order to avoid jitter. */
222 	simple_lock(&scsibus_interlock);
223 	for (;;) {
224 		scsi_initq = TAILQ_FIRST(&scsi_initq_head);
225 		if (scsi_initq->sc_channel == chan)
226 			break;
227 		ltsleep(&scsi_initq_head, PRIBIO, "scsi_initq", 0,
228 		    &scsibus_interlock);
229 	}
230 
231 	simple_unlock(&scsibus_interlock);
232 
233 	scsi_probe_bus(sc, -1, -1);
234 
235 	simple_lock(&scsibus_interlock);
236 	TAILQ_REMOVE(&scsi_initq_head, scsi_initq, scsi_initq);
237 	simple_unlock(&scsibus_interlock);
238 
239 	free(scsi_initq, M_DEVBUF);
240 	wakeup(&scsi_initq_head);
241 
242 	config_pending_decr();
243 }
244 
245 int
246 scsibussubmatch(parent, cf, aux)
247 	struct device *parent;
248 	struct cfdata *cf;
249 	void *aux;
250 {
251 	struct scsipibus_attach_args *sa = aux;
252 	struct scsipi_periph *periph = sa->sa_periph;
253 
254 	if (cf->cf_loc[SCSIBUSCF_TARGET] != SCSIBUSCF_TARGET_DEFAULT &&
255 	    cf->cf_loc[SCSIBUSCF_TARGET] != periph->periph_target)
256 		return (0);
257 	if (cf->cf_loc[SCSIBUSCF_LUN] != SCSIBUSCF_LUN_DEFAULT &&
258 	    cf->cf_loc[SCSIBUSCF_LUN] != periph->periph_lun)
259 		return (0);
260 	return (config_match(parent, cf, aux));
261 }
262 
263 int
264 scsibusactivate(self, act)
265 	struct device *self;
266 	enum devact act;
267 {
268 	struct scsibus_softc *sc = (void *) self;
269 	struct scsipi_channel *chan = sc->sc_channel;
270 	struct scsipi_periph *periph;
271 	int target, lun, error = 0, s;
272 
273 	s = splbio();
274 	switch (act) {
275 	case DVACT_ACTIVATE:
276 		error = EOPNOTSUPP;
277 		break;
278 
279 	case DVACT_DEACTIVATE:
280 		for (target = 0; target < chan->chan_ntargets;
281 		     target++) {
282 			if (target == chan->chan_id)
283 				continue;
284 			for (lun = 0; lun < chan->chan_nluns; lun++) {
285 				periph = scsipi_lookup_periph(chan,
286 				    target, lun);
287 				if (periph == NULL)
288 					continue;
289 				error = config_deactivate(periph->periph_dev);
290 				if (error)
291 					goto out;
292 			}
293 		}
294 		break;
295 	}
296  out:
297 	splx(s);
298 	return (error);
299 }
300 
301 int
302 scsibusdetach(self, flags)
303 	struct device *self;
304 	int flags;
305 {
306 	struct scsibus_softc *sc = (void *) self;
307 	struct scsipi_channel *chan = sc->sc_channel;
308 
309 	/*
310 	 * Shut down the channel.
311 	 */
312 	scsipi_channel_shutdown(chan);
313 
314 	/*
315 	 * Now detach all of the periphs.
316 	 */
317 	return scsipi_target_detach(chan, -1, -1, flags);
318 }
319 
320 /*
321  * Probe the requested scsi bus. It must be already set up.
322  * target and lun optionally narrow the search if not -1
323  */
324 int
325 scsi_probe_bus(sc, target, lun)
326 	struct scsibus_softc *sc;
327 	int target, lun;
328 {
329 	struct scsipi_channel *chan = sc->sc_channel;
330 	int maxtarget, mintarget, maxlun, minlun;
331 	int error;
332 
333 	if (target == -1) {
334 		maxtarget = chan->chan_ntargets - 1;
335 		mintarget = 0;
336 	} else {
337 		if (target < 0 || target >= chan->chan_ntargets)
338 			return (EINVAL);
339 		maxtarget = mintarget = target;
340 	}
341 
342 	if (lun == -1) {
343 		maxlun = chan->chan_nluns - 1;
344 		minlun = 0;
345 	} else {
346 		if (lun < 0 || lun >= chan->chan_nluns)
347 			return (EINVAL);
348 		maxlun = minlun = lun;
349 	}
350 
351 	/*
352 	 * Some HBAs provide an abstracted view of the bus; give them an
353 	 * oppertunity to re-scan it before we do.
354 	 */
355 	if (chan->chan_adapter->adapt_ioctl != NULL)
356 		(*chan->chan_adapter->adapt_ioctl)(chan, SCBUSIOLLSCAN, NULL,
357 		    0, curproc);
358 
359 	if ((error = scsipi_adapter_addref(chan->chan_adapter)) != 0)
360 		return (error);
361 	for (target = mintarget; target <= maxtarget; target++) {
362 		if (target == chan->chan_id)
363 			continue;
364 		for (lun = minlun; lun <= maxlun; lun++) {
365 			/*
366 			 * See if there's a device present, and configure it.
367 			 */
368 			if (scsi_probe_device(sc, target, lun) == 0)
369 				break;
370 			/* otherwise something says we should look further */
371 		}
372 
373 		/*
374 		 * Now that we've discovered all of the LUNs on this
375 		 * I_T Nexus, update the xfer mode for all of them
376 		 * that we know about.
377 		 */
378 		scsipi_set_xfer_mode(chan, target, 1);
379 	}
380 	scsipi_adapter_delref(chan->chan_adapter);
381 	return (0);
382 }
383 
384 /*
385  * Print out autoconfiguration information for a subdevice.
386  *
387  * This is a slight abuse of 'standard' autoconfiguration semantics,
388  * because 'print' functions don't normally print the colon and
389  * device information.  However, in this case that's better than
390  * either printing redundant information before the attach message,
391  * or having the device driver call a special function to print out
392  * the standard device information.
393  */
394 int
395 scsibusprint(aux, pnp)
396 	void *aux;
397 	const char *pnp;
398 {
399 	struct scsipibus_attach_args *sa = aux;
400 	struct scsipi_inquiry_pattern *inqbuf;
401 	u_int8_t type;
402 	const char *dtype;
403 	char vendor[33], product[65], revision[17];
404 	int target, lun;
405 
406 	if (pnp != NULL)
407 		aprint_normal("%s", pnp);
408 
409 	inqbuf = &sa->sa_inqbuf;
410 
411 	target = sa->sa_periph->periph_target;
412 	lun = sa->sa_periph->periph_lun;
413 	type = inqbuf->type & SID_TYPE;
414 
415 	dtype = scsipi_dtype(type);
416 
417 	scsipi_strvis(vendor, 33, inqbuf->vendor, 8);
418 	scsipi_strvis(product, 65, inqbuf->product, 16);
419 	scsipi_strvis(revision, 17, inqbuf->revision, 4);
420 
421 	aprint_normal(" target %d lun %d: <%s, %s, %s> %s %s",
422 	    target, lun, vendor, product, revision, dtype,
423 	    inqbuf->removable ? "removable" : "fixed");
424 
425 	return (UNCONF);
426 }
427 
428 const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
429 	{{T_CDROM, T_REMOV,
430 	 "CHINON  ", "CD-ROM CDS-431  ", ""},     PQUIRK_NOLUNS},
431 	{{T_CDROM, T_REMOV,
432 	 "Chinon  ", "CD-ROM CDS-525  ", ""},     PQUIRK_NOLUNS},
433 	{{T_CDROM, T_REMOV,
434 	 "CHINON  ", "CD-ROM CDS-535  ", ""},     PQUIRK_NOLUNS},
435 	{{T_CDROM, T_REMOV,
436 	 "DEC     ", "RRD42   (C) DEC ", ""},     PQUIRK_NOLUNS},
437 	{{T_CDROM, T_REMOV,
438 	 "DENON   ", "DRD-25X         ", "V"},    PQUIRK_NOLUNS},
439 	{{T_CDROM, T_REMOV,
440 	 "GENERIC ", "CRD-BP2         ", ""},     PQUIRK_NOLUNS},
441 	{{T_CDROM, T_REMOV,
442 	 "HP      ", "C4324/C4325     ", ""},     PQUIRK_NOLUNS},
443 	{{T_CDROM, T_REMOV,
444 	 "IMS     ", "CDD521/10       ", "2.06"}, PQUIRK_NOLUNS},
445 	{{T_CDROM, T_REMOV,
446 	 "MATSHITA", "CD-ROM CR-5XX   ", "1.0b"}, PQUIRK_NOLUNS},
447 	{{T_CDROM, T_REMOV,
448 	 "MEDAVIS ", "RENO CD-ROMX2A  ", ""},     PQUIRK_NOLUNS},
449 	{{T_CDROM, T_REMOV,
450 	 "MEDIAVIS", "CDR-H93MV       ", "1.3"},  PQUIRK_NOLUNS},
451 	{{T_CDROM, T_REMOV,
452 	 "NEC     ", "CD-ROM DRIVE:502", ""},     PQUIRK_NOLUNS},
453 	{{T_CDROM, T_REMOV,
454 	 "NEC     ", "CD-ROM DRIVE:55 ", ""},     PQUIRK_NOLUNS},
455 	{{T_CDROM, T_REMOV,
456 	 "NEC     ", "CD-ROM DRIVE:83 ", ""},     PQUIRK_NOLUNS},
457 	{{T_CDROM, T_REMOV,
458 	 "NEC     ", "CD-ROM DRIVE:84 ", ""},     PQUIRK_NOLUNS},
459 	{{T_CDROM, T_REMOV,
460 	 "NEC     ", "CD-ROM DRIVE:841", ""},     PQUIRK_NOLUNS},
461 	{{T_CDROM, T_REMOV,
462 	 "PIONEER ", "CD-ROM DR-124X  ", "1.01"}, PQUIRK_NOLUNS},
463 	{{T_CDROM, T_REMOV,
464 	 "SONY    ", "CD-ROM CDU-541  ", ""},     PQUIRK_NOLUNS},
465 	{{T_CDROM, T_REMOV,
466 	 "SONY    ", "CD-ROM CDU-55S  ", ""},     PQUIRK_NOLUNS},
467 	{{T_CDROM, T_REMOV,
468 	 "SONY    ", "CD-ROM CDU-561  ", ""},     PQUIRK_NOLUNS},
469 	{{T_CDROM, T_REMOV,
470 	 "SONY    ", "CD-ROM CDU-76S", ""},
471 				PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOWIDE},
472 	{{T_CDROM, T_REMOV,
473 	 "SONY    ", "CD-ROM CDU-8003A", ""},     PQUIRK_NOLUNS},
474 	{{T_CDROM, T_REMOV,
475 	 "SONY    ", "CD-ROM CDU-8012 ", ""},     PQUIRK_NOLUNS},
476 	{{T_CDROM, T_REMOV,
477 	 "TEAC    ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
478 	{{T_CDROM, T_REMOV,
479 	 "TEAC    ", "CD-ROM CD-56S   ", "1.0B"}, PQUIRK_NOLUNS},
480 	{{T_CDROM, T_REMOV,
481 	 "TEXEL   ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
482 	{{T_CDROM, T_REMOV,
483 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.09"}, PQUIRK_NOLUNS},
484 	{{T_CDROM, T_REMOV,
485 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, PQUIRK_NOLUNS},
486 	{{T_CDROM, T_REMOV,
487 	 "TOSHIBA ", "XM-4101TASUNSLCD", ""}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
488 	/* "IBM CDRM00201     !F" 0724 is an IBM OEM Toshiba XM-4101BME */
489 	{{T_CDROM, T_REMOV,
490 	 "IBM     ", "CDRM00201     !F", "0724"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
491 	{{T_CDROM, T_REMOV,
492 	 "ShinaKen", "CD-ROM DM-3x1S",   "1.04"}, PQUIRK_NOLUNS},
493 	{{T_CDROM, T_REMOV,
494 	 "JVC     ", "R2626",            ""},     PQUIRK_NOLUNS},
495 	{{T_CDROM, T_REMOV,
496 	 "YAMAHA", "CRW8424S",           ""},     PQUIRK_NOLUNS},
497 	{{T_CDROM, T_REMOV,
498 	 "VMware", "Virtual",            "1.0"},
499 				PQUIRK_NOSTARTUNIT|PQUIRK_NODOORLOCK},
500 	{{T_CDROM, T_REMOV,
501 	 "NEC     ", "CD-ROM DRIVE:222", ""},	  PQUIRK_NOLUNS|PQUIRK_NOSYNC},
502 
503 	{{T_DIRECT, T_FIXED,
504 	 "MICROP  ", "1588-15MBSUN0669", ""},     PQUIRK_AUTOSAVE},
505 	{{T_DIRECT, T_FIXED,
506 	 "MICROP  ", "2217-15MQ1091501", ""},     PQUIRK_NOSYNCCACHE},
507 	{{T_OPTICAL, T_REMOV,
508 	 "EPSON   ", "OMD-5010        ", "3.08"}, PQUIRK_NOLUNS},
509 	{{T_DIRECT, T_FIXED,
510 	 "TOSHIBA ","CD-ROM XM-3401TA",  "0283"}, PQUIRK_CDROM|PQUIRK_NOLUNS},
511 	{{T_DIRECT, T_FIXED,
512 	 "TOSHIBA ", "CD-ROM DRIVE:XM",  "1971"}, PQUIRK_CDROM|PQUIRK_NOLUNS},
513 	{{T_DIRECT, T_FIXED,
514 	 "ADAPTEC ", "AEC-4412BD",       "1.2A"}, PQUIRK_NOMODESENSE},
515 	{{T_DIRECT, T_FIXED,
516 	 "ADAPTEC ", "ACB-4000",         ""},     PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE|PQUIRK_NOMODESENSE},
517 	{{T_DIRECT, T_FIXED,
518 	 "DEC     ", "RZ55     (C) DEC", ""},     PQUIRK_AUTOSAVE},
519 	{{T_DIRECT, T_FIXED,
520 	 "EMULEX  ", "MD21/S2     ESDI", "A00"},
521 				PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE},
522 	/* Gives non-media hardware failure in response to start-unit command */
523 	{{T_DIRECT, T_FIXED,
524 	 "HITACHI", "DK515C",            "CP16"}, PQUIRK_NOSTARTUNIT},
525 	{{T_DIRECT, T_FIXED,
526 	 "HITACHI", "DK515C",            "CP15"}, PQUIRK_NOSTARTUNIT},
527 	{{T_DIRECT, T_FIXED,
528 	/* improperly report DT-only sync mode */
529 	 "HITACHI", "DX32DJ-72ME",	 ""},
530 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
531 	{{T_DIRECT, T_FIXED,
532 	 "MICROP",  "1548-15MZ1077801",  "HZ2P"}, PQUIRK_NOTAG},
533 	{{T_DIRECT, T_FIXED,
534 	 "HP      ", "C372",             ""},     PQUIRK_NOTAG},
535 	{{T_DIRECT, T_FIXED,
536 	 "IBMRAID ", "0662S",		 ""},     PQUIRK_AUTOSAVE},
537 	{{T_DIRECT, T_FIXED,
538 	 "IBM     ", "0663H",		 ""},     PQUIRK_AUTOSAVE},
539 	{{T_DIRECT, T_FIXED,
540 	 "IBM",	     "0664",		 ""},     PQUIRK_AUTOSAVE},
541 	{{T_DIRECT, T_FIXED,
542 	/* improperly report DT-only sync mode */
543 	 "IBM     ", "DXHS36D",		 ""},
544 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
545 	{{T_DIRECT, T_FIXED,
546 	 "IBM     ", "DXHS18Y",		 ""},
547 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
548 	{{T_DIRECT, T_FIXED,
549 	 "IBM     ", "H3171-S2",	 ""},
550 				PQUIRK_NOLUNS|PQUIRK_AUTOSAVE},
551 	{{T_DIRECT, T_FIXED,
552 	 "IBM     ", "KZ-C",		 ""},	  PQUIRK_AUTOSAVE},
553 	/* Broken IBM disk */
554 	{{T_DIRECT, T_FIXED,
555 	 ""	   , "DFRSS2F",		 ""},	  PQUIRK_AUTOSAVE},
556 	{{T_DIRECT, T_REMOV,
557 	 "MPL     ", "MC-DISK-        ", ""},     PQUIRK_NOLUNS},
558 	{{T_DIRECT, T_FIXED,
559 	 "MAXTOR  ", "XT-3280         ", ""},     PQUIRK_NOLUNS},
560 	{{T_DIRECT, T_FIXED,
561 	 "MAXTOR  ", "XT-4380S        ", ""},     PQUIRK_NOLUNS},
562 	{{T_DIRECT, T_FIXED,
563 	 "MAXTOR  ", "MXT-1240S       ", ""},     PQUIRK_NOLUNS},
564 	{{T_DIRECT, T_FIXED,
565 	 "MAXTOR  ", "XT-4170S        ", ""},     PQUIRK_NOLUNS},
566 	{{T_DIRECT, T_FIXED,
567 	 "MAXTOR  ", "XT-8760S",         ""},     PQUIRK_NOLUNS},
568 	{{T_DIRECT, T_FIXED,
569 	 "MAXTOR  ", "LXT-213S        ", ""},     PQUIRK_NOLUNS},
570 	{{T_DIRECT, T_FIXED,
571 	 "MAXTOR  ", "LXT-213S SUN0207", ""},     PQUIRK_NOLUNS},
572 	{{T_DIRECT, T_FIXED,
573 	 "MAXTOR  ", "LXT-200S        ", ""},     PQUIRK_NOLUNS},
574 	{{T_DIRECT, T_FIXED,
575 	 "MEGADRV ", "EV1000",           ""},     PQUIRK_NOMODESENSE},
576 	{{T_DIRECT, T_FIXED,
577 	 "MICROP", "1991-27MZ",          ""},     PQUIRK_NOTAG},
578 	{{T_DIRECT, T_FIXED,
579 	 "MST     ", "SnapLink        ", ""},     PQUIRK_NOLUNS},
580 	{{T_DIRECT, T_FIXED,
581 	 "NEC     ", "D3847           ", "0307"}, PQUIRK_NOLUNS},
582 	{{T_DIRECT, T_FIXED,
583 	 "QUANTUM ", "ELS85S          ", ""},     PQUIRK_AUTOSAVE},
584 	{{T_DIRECT, T_FIXED,
585 	 "QUANTUM ", "LPS525S         ", ""},     PQUIRK_NOLUNS},
586 	{{T_DIRECT, T_FIXED,
587 	 "QUANTUM ", "P105S 910-10-94x", ""},     PQUIRK_NOLUNS},
588 	{{T_DIRECT, T_FIXED,
589 	 "QUANTUM ", "PD1225S         ", ""},     PQUIRK_NOLUNS},
590 	{{T_DIRECT, T_FIXED,
591 	 "QUANTUM ", "PD210S   SUN0207", ""},     PQUIRK_NOLUNS},
592 	{{T_DIRECT, T_FIXED,
593 	 "QUANTUM ", "ATLAS IV 9 WLS", "0A0A"},   PQUIRK_CAP_NODT},
594 	{{T_DIRECT, T_FIXED,
595 	 "RODIME  ", "RO3000S         ", ""},     PQUIRK_NOLUNS},
596 	{{T_DIRECT, T_FIXED,
597 	 "SEAGATE ", "ST125N          ", ""},     PQUIRK_NOLUNS},
598 	{{T_DIRECT, T_FIXED,
599 	 "SEAGATE ", "ST157N          ", ""},     PQUIRK_NOLUNS},
600 	{{T_DIRECT, T_FIXED,
601 	 "SEAGATE ", "ST296           ", ""},     PQUIRK_NOLUNS},
602 	{{T_DIRECT, T_FIXED,
603 	 "SEAGATE ", "ST296N          ", ""},     PQUIRK_NOLUNS},
604 	{{T_DIRECT, T_FIXED,
605 	 "SEAGATE ", "ST318404LC      ", ""},     PQUIRK_NOLUNS},
606 	{{T_DIRECT, T_FIXED,
607 	 "SEAGATE ", "ST15150N        ", ""},     PQUIRK_NOTAG},
608 	{{T_DIRECT, T_FIXED,
609 	 "SEAGATE ", "ST19171",          ""},     PQUIRK_NOMODESENSE},
610 	{{T_DIRECT, T_FIXED,
611 	 "SEAGATE ", "ST32430N",         ""},     PQUIRK_CAP_SYNC},
612 	{{T_DIRECT, T_FIXED,
613 	 "SEAGATE ", "ST34501FC       ", ""},     PQUIRK_NOMODESENSE},
614 	{{T_DIRECT, T_FIXED,
615 	 "TOSHIBA ", "MK538FB         ", "6027"}, PQUIRK_NOLUNS},
616 	{{T_DIRECT, T_FIXED,
617 	 "VMware", "Virtual",           "1.0"},
618 				PQUIRK_NOSTARTUNIT|PQUIRK_NODOORLOCK},
619 	{{T_DIRECT, T_FIXED,	/* XXX move to umass */
620 	 "Maxtor 4", "D080H4",           "DAH0"}, PQUIRK_NOMODESENSE},
621 	{{T_DIRECT, T_FIXED,	/* XXX move to umass */
622 	 "Maxtor 4", "D040H2",           "DAH0"}, PQUIRK_NOMODESENSE},
623 	{{T_DIRECT, T_FIXED,
624 	 "MICROP  ", "1924",          ""},     PQUIRK_CAP_SYNC},
625 	{{T_DIRECT, T_FIXED,
626 	 "FUJITSU ", "M2266",         ""},     PQUIRK_CAP_SYNC},
627 
628 	{{T_DIRECT, T_REMOV,
629 	 "iomega", "jaz 1GB", 		 ""},	  PQUIRK_NOMODESENSE},
630 	{{T_DIRECT, T_REMOV,
631 	 "IOMEGA", "ZIP 100",		 ""},	  PQUIRK_NOMODESENSE},
632 	{{T_DIRECT, T_REMOV,
633 	 "IOMEGA", "ZIP 100",		 "J.03"},
634 				PQUIRK_NOMODESENSE|PQUIRK_NOLUNS},
635 	/* Letting the motor run kills floppy drives and disks quite fast. */
636 	{{T_DIRECT, T_REMOV,
637 	 "TEAC", "FC-1",		 ""},	  PQUIRK_NOSTARTUNIT},
638 	{{T_DIRECT, T_REMOV,
639 	 "INSITE", "I325VM",             ""},
640 				PQUIRK_NOLUNS|PQUIRK_NODOORLOCK},
641 
642 	/* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
643 	{{T_SEQUENTIAL, T_REMOV,
644 	 "        ", "                ", "    "}, PQUIRK_NOLUNS},
645 	{{T_SEQUENTIAL, T_REMOV,
646 	 "EMULEX  ", "MT-02 QIC       ", ""},     PQUIRK_NOLUNS},
647 	{{T_SEQUENTIAL, T_REMOV,
648 	 "CALIPER ", "CP150           ", ""},     PQUIRK_NOLUNS},
649 	{{T_SEQUENTIAL, T_REMOV,
650 	 "EXABYTE ", "EXB-8200        ", ""},     PQUIRK_NOLUNS},
651 	{{T_SEQUENTIAL, T_REMOV,
652 	 "SONY    ", "GY-10C          ", ""},     PQUIRK_NOLUNS},
653 	{{T_SEQUENTIAL, T_REMOV,
654 	 "SONY    ", "SDT-2000        ", "2.09"}, PQUIRK_NOLUNS},
655 	{{T_SEQUENTIAL, T_REMOV,
656 	 "SONY    ", "SDT-5000        ", "3."},   PQUIRK_NOSYNC|PQUIRK_NOWIDE},
657 	{{T_SEQUENTIAL, T_REMOV,
658 	 "SONY    ", "SDT-5200        ", "3."},   PQUIRK_NOLUNS},
659 	{{T_SEQUENTIAL, T_REMOV,
660 	 "TANDBERG", " TDC 3600       ", ""},     PQUIRK_NOLUNS},
661 	/* Following entry reported as a Tandberg 3600; ref. PR1933 */
662 	{{T_SEQUENTIAL, T_REMOV,
663 	 "ARCHIVE ", "VIPER 150  21247", ""},     PQUIRK_NOLUNS},
664 	/* Following entry for a Cipher ST150S; ref. PR4171 */
665 	{{T_SEQUENTIAL, T_REMOV,
666 	 "ARCHIVE ", "VIPER 1500 21247", "2.2G"}, PQUIRK_NOLUNS},
667 	{{T_SEQUENTIAL, T_REMOV,
668 	 "ARCHIVE ", "Python 28454-XXX", ""},     PQUIRK_NOLUNS},
669 	{{T_SEQUENTIAL, T_REMOV,
670 	 "WANGTEK ", "5099ES SCSI",      ""},     PQUIRK_NOLUNS},
671 	{{T_SEQUENTIAL, T_REMOV,
672 	 "WANGTEK ", "5150ES SCSI",      ""},     PQUIRK_NOLUNS},
673 	{{T_SEQUENTIAL, T_REMOV,
674 	 "WANGTEK ", "SCSI-36",		 ""},     PQUIRK_NOLUNS},
675 	{{T_SEQUENTIAL, T_REMOV,
676 	 "WangDAT ", "Model 1300      ", "02.4"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
677 	{{T_SEQUENTIAL, T_REMOV,
678 	 "WangDAT ", "Model 2600      ", "01.7"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
679 	{{T_SEQUENTIAL, T_REMOV,
680 	 "WangDAT ", "Model 3200      ", "02.2"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
681 	{{T_SEQUENTIAL, T_REMOV,
682 	 "TEAC    ", "MT-2ST/N50      ", ""},     PQUIRK_NOLUNS},
683 
684 	{{T_SCANNER, T_FIXED,
685 	 "RICOH   ", "IS60            ", "1R08"}, PQUIRK_NOLUNS},
686 	{{T_SCANNER, T_FIXED,
687 	 "UMAX    ", "Astra 1200S     ", "V2.9"}, PQUIRK_NOLUNS},
688 	{{T_SCANNER, T_FIXED,
689 	 "UMAX    ", "Astra 1220S     ", ""},     PQUIRK_NOLUNS},
690 	{{T_SCANNER, T_FIXED,
691 	 "UMAX    ", "UMAX S-6E       ", "V2.0"}, PQUIRK_NOLUNS},
692 	{{T_SCANNER, T_FIXED,
693 	 "UMAX    ", "UMAX S-12       ", "V2.1"}, PQUIRK_NOLUNS},
694 	{{T_SCANNER, T_FIXED,
695 	 "ULTIMA  ", "A6000C          ", ""},     PQUIRK_NOLUNS},
696 	{{T_PROCESSOR, T_FIXED,
697 	 "SYMBIOS",  "",                 ""},     PQUIRK_NOLUNS},
698 	{{T_PROCESSOR, T_FIXED,
699 	 "LITRONIC", "PCMCIA          ", ""},     PQUIRK_NOLUNS},
700 	{{T_CHANGER, T_REMOV,
701 	 "SONY    ", "CDL1100         ", ""},     PQUIRK_NOLUNS},
702 	{{T_ENCLOSURE, T_FIXED,
703 	 "SUN     ", "SENA            ", ""},     PQUIRK_NOLUNS},
704 };
705 
706 /*
707  * given a target and lun, ask the device what
708  * it is, and find the correct driver table
709  * entry.
710  */
711 int
712 scsi_probe_device(sc, target, lun)
713 	struct scsibus_softc *sc;
714 	int target, lun;
715 {
716 	struct scsipi_channel *chan = sc->sc_channel;
717 	struct scsipi_periph *periph;
718 	struct scsipi_inquiry_data inqbuf;
719 	struct scsi_quirk_inquiry_pattern *finger;
720 	int checkdtype, priority, docontinue, quirks;
721 	struct scsipibus_attach_args sa;
722 	struct cfdata *cf;
723 
724 	/*
725 	 * Assume no more luns to search after this one.
726 	 * If we successfully get Inquiry data and after
727 	 * merging quirks we find we can probe for more
728 	 * luns, we will.
729 	 */
730 	docontinue = 0;
731 
732 	/* Skip this slot if it is already attached. */
733 	if (scsipi_lookup_periph(chan, target, lun) != NULL)
734 		return (docontinue);
735 
736 	periph = scsipi_alloc_periph(M_NOWAIT);
737 	if (periph == NULL) {
738 #ifdef	DIAGNOSTIC
739 		aprint_error(
740 		    "%s: cannot allocate periph for target %d lun %d\n",
741 		    sc->sc_dev.dv_xname, target, lun);
742 #endif
743 		return (ENOMEM);
744 	}
745 	periph->periph_channel = chan;
746 	periph->periph_switch = &scsi_probe_dev;
747 
748 	periph->periph_target = target;
749 	periph->periph_lun = lun;
750 	periph->periph_quirks = chan->chan_defquirks;
751 
752 #ifdef SCSIPI_DEBUG
753 	if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_SCSI &&
754 	    SCSIPI_DEBUG_TARGET == target &&
755 	    SCSIPI_DEBUG_LUN == lun)
756 		periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
757 #endif
758 
759 	/*
760 	 * Ask the device what it is
761 	 */
762 	(void) scsipi_test_unit_ready(periph,
763 	    XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST |
764 	    XS_CTL_IGNORE_NOT_READY | XS_CTL_IGNORE_MEDIA_CHANGE);
765 
766 #ifdef SCSI_2_DEF
767 	/* some devices need to be told to go to SCSI2 */
768 	/* However some just explode if you tell them this.. leave it out */
769 	scsi_change_def(periph, XS_CTL_DISCOVERY | XS_CTL_SILENT);
770 #endif /* SCSI_2_DEF */
771 
772 	/* Now go ask the device all about itself. */
773 	memset(&inqbuf, 0, sizeof(inqbuf));
774 	if (scsipi_inquire(periph, &inqbuf,
775 	    XS_CTL_DISCOVERY | XS_CTL_DATA_ONSTACK) != 0)
776 		goto bad;
777 	{
778 		u_int8_t *extension = &inqbuf.flags1;
779 		int len = inqbuf.additional_length;
780 		while (len < 3)
781 			extension[len++] = '\0';
782 		while (len < 3 + 28)
783 			extension[len++] = ' ';
784 		while (len < 3 + 28 + 20)
785 			extension[len++] = '\0';
786 		while (len < 3 + 28 + 20 + 1)
787 			extension[len++] = '\0';
788 		while (len < 3 + 28 + 20 + 1 + 1)
789 			extension[len++] = '\0';
790 		while (len < 3 + 28 + 20 + 1 + 1 + (8*2))
791 			extension[len++] = ' ';
792 	}
793 
794 	periph->periph_type = inqbuf.device & SID_TYPE;
795 	if (inqbuf.dev_qual2 & SID_REMOVABLE)
796 		periph->periph_flags |= PERIPH_REMOVABLE;
797 	periph->periph_version = inqbuf.version & SID_ANSII;
798 
799 	/*
800 	 * Any device qualifier that has the top bit set (qualifier&4 != 0)
801 	 * is vendor specific and won't match in this switch.
802 	 * All we do here is throw out bad/negative responses.
803 	 */
804 	checkdtype = 0;
805 	switch (inqbuf.device & SID_QUAL) {
806 	case SID_QUAL_LU_PRESENT:
807 	case SID_QUAL_LU_NOTPRESENT:
808 		checkdtype = 1;
809 		break;
810 
811 	case SID_QUAL_reserved:
812 	case SID_QUAL_LU_NOT_SUPP:
813 		goto bad;
814 
815 	default:
816 		break;
817 	}
818 
819 	/* Let the adapter driver handle the device separatley if it wants. */
820 	if (chan->chan_adapter->adapt_accesschk != NULL &&
821 	    (*chan->chan_adapter->adapt_accesschk)(periph, &sa.sa_inqbuf))
822 		goto bad;
823 
824 	if (checkdtype) {
825 		switch (periph->periph_type) {
826 		case T_DIRECT:
827 		case T_SEQUENTIAL:
828 		case T_PRINTER:
829 		case T_PROCESSOR:
830 		case T_WORM:
831 		case T_CDROM:
832 		case T_SCANNER:
833 		case T_OPTICAL:
834 		case T_CHANGER:
835 		case T_COMM:
836 		case T_IT8_1:
837 		case T_IT8_2:
838 		case T_STORARRAY:
839 		case T_ENCLOSURE:
840 		case T_SIMPLE_DIRECT:
841 		case T_OPTIC_CARD_RW:
842 		case T_OBJECT_STORED:
843 		default:
844 			break;
845 		case T_NODEVICE:
846 			goto bad;
847 		}
848 	}
849 
850 	sa.sa_periph = periph;
851 	sa.sa_inqbuf.type = inqbuf.device;
852 	sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
853 	    T_REMOV : T_FIXED;
854 	sa.sa_inqbuf.vendor = inqbuf.vendor;
855 	sa.sa_inqbuf.product = inqbuf.product;
856 	sa.sa_inqbuf.revision = inqbuf.revision;
857 	sa.scsipi_info.scsi_version = inqbuf.version;
858 	sa.sa_inqptr = &inqbuf;
859 
860 	finger = (struct scsi_quirk_inquiry_pattern *)scsipi_inqmatch(
861 	    &sa.sa_inqbuf, (caddr_t)scsi_quirk_patterns,
862 	    sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
863 	    sizeof(scsi_quirk_patterns[0]), &priority);
864 
865 	if (finger != NULL)
866 		quirks = finger->quirks;
867 	else
868 		quirks = 0;
869 
870 	/*
871 	 * Determine the operating mode capabilities of the device.
872 	 */
873 	if (periph->periph_version >= 2) {
874 		if ((inqbuf.flags3 & SID_CmdQue) != 0 &&
875 		    (quirks & PQUIRK_NOTAG) == 0)
876 			periph->periph_cap |= PERIPH_CAP_TQING;
877 		if ((inqbuf.flags3 & SID_Linked) != 0)
878 			periph->periph_cap |= PERIPH_CAP_LINKCMDS;
879 		if ((inqbuf.flags3 & SID_Sync) != 0 &&
880 		    (quirks & PQUIRK_NOSYNC) == 0)
881 			periph->periph_cap |= PERIPH_CAP_SYNC;
882 		if ((inqbuf.flags3 & SID_WBus16) != 0 &&
883 		    (quirks & PQUIRK_NOWIDE) == 0)
884 			periph->periph_cap |= PERIPH_CAP_WIDE16;
885 		if ((inqbuf.flags3 & SID_WBus32) != 0 &&
886 		    (quirks & PQUIRK_NOWIDE) == 0)
887 			periph->periph_cap |= PERIPH_CAP_WIDE32;
888 		if ((inqbuf.flags3 & SID_SftRe) != 0)
889 			periph->periph_cap |= PERIPH_CAP_SFTRESET;
890 		if ((inqbuf.flags3 & SID_RelAdr) != 0)
891 			periph->periph_cap |= PERIPH_CAP_RELADR;
892 		/* SPC-2 */
893 		if (periph->periph_version >= 3 &&
894 		    !(quirks & PQUIRK_CAP_NODT)){
895 			/*
896 			 * Report ST clocking though CAP_WIDExx/CAP_SYNC.
897 			 * If the device only supports DT, clear these
898 			 * flags (DT implies SYNC and WIDE)
899 			 */
900 			switch (inqbuf.flags4 & SID_Clocking) {
901 			case SID_CLOCKING_DT_ONLY:
902 				periph->periph_cap &=
903 				    ~(PERIPH_CAP_SYNC |
904 				      PERIPH_CAP_WIDE16 |
905 				      PERIPH_CAP_WIDE32);
906 				/* FALLTHOUGH */
907 			case SID_CLOCKING_SD_DT:
908 				periph->periph_cap |= PERIPH_CAP_DT;
909 				break;
910 			default: /* ST only or invalid */
911 				/* nothing to do */
912 				break;
913 			}
914 		}
915 		if (periph->periph_version >= 3) {
916 			if (inqbuf.flags4 & SID_IUS)
917 				periph->periph_cap |= PERIPH_CAP_IUS;
918 			if (inqbuf.flags4 & SID_QAS)
919 				periph->periph_cap |= PERIPH_CAP_QAS;
920 		}
921 	}
922 	if (quirks & PQUIRK_CAP_SYNC)
923 		periph->periph_cap |= PERIPH_CAP_SYNC;
924 	if (quirks & PQUIRK_CAP_WIDE16)
925 		periph->periph_cap |= PERIPH_CAP_WIDE16;
926 
927 	/*
928 	 * Now apply any quirks from the table.
929 	 */
930 	periph->periph_quirks |= quirks;
931 	if (periph->periph_version == 0 &&
932 	    (periph->periph_quirks & PQUIRK_FORCELUNS) == 0)
933 		periph->periph_quirks |= PQUIRK_NOLUNS;
934 
935 	if (periph->periph_quirks & PQUIRK_CDROM) {
936 		periph->periph_quirks ^= PQUIRK_CDROM;
937 		inqbuf.dev_qual2 |= SID_REMOVABLE;
938 		sa.sa_inqbuf.type = inqbuf.device =
939 		    ((inqbuf.device & ~SID_REMOVABLE) | T_CDROM);
940 		sa.sa_inqbuf.removable = T_REMOV;
941 	}
942 
943 	if ((periph->periph_quirks & PQUIRK_NOLUNS) == 0)
944 		docontinue = 1;
945 
946 	if ((cf = config_search(scsibussubmatch, &sc->sc_dev, &sa)) != NULL) {
947 		scsipi_insert_periph(chan, periph);
948 		/*
949 		 * XXX Can't assign periph_dev here, because we'll
950 		 * XXX need it before config_attach() returns.  Must
951 		 * XXX assign it in periph driver.
952 		 */
953 		(void) config_attach(&sc->sc_dev, cf, &sa, scsibusprint);
954 	} else {
955 		scsibusprint(&sa, sc->sc_dev.dv_xname);
956 		aprint_normal(" not configured\n");
957 		goto bad;
958 	}
959 
960 	return (docontinue);
961 
962 bad:
963 	free(periph, M_DEVBUF);
964 	return (docontinue);
965 }
966 
967 /****** Entry points for user control of the SCSI bus. ******/
968 
969 int
970 scsibusopen(dev, flag, fmt, p)
971 	dev_t dev;
972 	int flag, fmt;
973 	struct proc *p;
974 {
975 	struct scsibus_softc *sc;
976 	int error, unit = minor(dev);
977 
978 	if (unit >= scsibus_cd.cd_ndevs ||
979 	    (sc = scsibus_cd.cd_devs[unit]) == NULL)
980 		return (ENXIO);
981 
982 	if (sc->sc_flags & SCSIBUSF_OPEN)
983 		return (EBUSY);
984 
985 	if ((error = scsipi_adapter_addref(sc->sc_channel->chan_adapter)) != 0)
986 		return (error);
987 
988 	sc->sc_flags |= SCSIBUSF_OPEN;
989 
990 	return (0);
991 }
992 
993 int
994 scsibusclose(dev, flag, fmt, p)
995 	dev_t dev;
996 	int flag, fmt;
997 	struct proc *p;
998 {
999 	struct scsibus_softc *sc = scsibus_cd.cd_devs[minor(dev)];
1000 
1001 	scsipi_adapter_delref(sc->sc_channel->chan_adapter);
1002 
1003 	sc->sc_flags &= ~SCSIBUSF_OPEN;
1004 
1005 	return (0);
1006 }
1007 
1008 int
1009 scsibusioctl(dev, cmd, addr, flag, p)
1010 	dev_t dev;
1011 	u_long cmd;
1012 	caddr_t addr;
1013 	int flag;
1014 	struct proc *p;
1015 {
1016 	struct scsibus_softc *sc = scsibus_cd.cd_devs[minor(dev)];
1017 	struct scsipi_channel *chan = sc->sc_channel;
1018 	int error;
1019 
1020 	/*
1021 	 * Enforce write permission for ioctls that change the
1022 	 * state of the bus.  Host adapter specific ioctls must
1023 	 * be checked by the adapter driver.
1024 	 */
1025 	switch (cmd) {
1026 	case SCBUSIOSCAN:
1027 	case SCBUSIODETACH:
1028 	case SCBUSIORESET:
1029 		if ((flag & FWRITE) == 0)
1030 			return (EBADF);
1031 	}
1032 
1033 	switch (cmd) {
1034 	case SCBUSIOSCAN:
1035 	    {
1036 		struct scbusioscan_args *a =
1037 		    (struct scbusioscan_args *)addr;
1038 
1039 		error = scsi_probe_bus(sc, a->sa_target, a->sa_lun);
1040 		break;
1041 	    }
1042 
1043 	case SCBUSIODETACH:
1044 	    {
1045 		struct scbusiodetach_args *a =
1046 		    (struct scbusiodetach_args *)addr;
1047 
1048 		error = scsipi_target_detach(chan, a->sa_target, a->sa_lun, 0);
1049 		break;
1050 	    }
1051 
1052 
1053 	case SCBUSIORESET:
1054 		/* FALLTHROUGH */
1055 	default:
1056 		if (chan->chan_adapter->adapt_ioctl == NULL)
1057 			error = ENOTTY;
1058 		else
1059 			error = (*chan->chan_adapter->adapt_ioctl)(chan,
1060 			    cmd, addr, flag, p);
1061 		break;
1062 	}
1063 
1064 	return (error);
1065 }
1066