xref: /netbsd-src/sys/dev/scsipi/scsiconf.c (revision 7fa608457b817eca6e0977b37f758ae064f3c99c)
1 /*	$NetBSD: scsiconf.c,v 1.243 2007/03/04 06:02:42 christos 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  * 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 1.243 2007/03/04 06:02:42 christos 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 static 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 static int	scsi_probe_device(struct scsibus_softc *, int, int);
96 
97 static int	scsibusmatch(struct device *, struct cfdata *, void *);
98 static void	scsibusattach(struct device *, struct device *, void *);
99 static int	scsibusactivate(struct device *, enum devact);
100 static int	scsibusdetach(struct device *, int flags);
101 static int	scsibusrescan(struct device *, const char *, const int *);
102 static void	scsidevdetached(struct device *, struct device *);
103 
104 CFATTACH_DECL2(scsibus, sizeof(struct scsibus_softc),
105     scsibusmatch, scsibusattach, scsibusdetach, scsibusactivate,
106     scsibusrescan, scsidevdetached);
107 
108 extern struct cfdriver scsibus_cd;
109 
110 static dev_type_open(scsibusopen);
111 static dev_type_close(scsibusclose);
112 static dev_type_ioctl(scsibusioctl);
113 
114 const struct cdevsw scsibus_cdevsw = {
115 	scsibusopen, scsibusclose, noread, nowrite, scsibusioctl,
116 	nostop, notty, nopoll, nommap, nokqfilter, D_OTHER,
117 };
118 
119 static int	scsibusprint(void *, const char *);
120 static void	scsibus_config(struct scsipi_channel *, void *);
121 
122 const struct scsipi_bustype scsi_bustype = {
123 	SCSIPI_BUSTYPE_SCSI,
124 	scsi_scsipi_cmd,
125 	scsipi_interpret_sense,
126 	scsi_print_addr,
127 	scsi_kill_pending,
128 };
129 
130 int
131 scsiprint(void *aux, const char *pnp)
132 {
133 	struct scsipi_channel *chan = aux;
134 	struct scsipi_adapter *adapt = chan->chan_adapter;
135 
136 	/* only "scsibus"es can attach to "scsi"s; easy. */
137 	if (pnp)
138 		aprint_normal("scsibus at %s", pnp);
139 
140 	/* don't print channel if the controller says there can be only one. */
141 	if (adapt->adapt_nchannels != 1)
142 		aprint_normal(" channel %d", chan->chan_channel);
143 
144 	return (UNCONF);
145 }
146 
147 static int
148 scsibusmatch(struct device *parent, struct cfdata *cf, void *aux)
149 {
150 	struct scsipi_channel *chan = aux;
151 
152 	if (chan->chan_bustype->bustype_type != SCSIPI_BUSTYPE_SCSI)
153 		return 0;
154 
155 	if (cf->cf_loc[SCSICF_CHANNEL] != chan->chan_channel &&
156 	    cf->cf_loc[SCSICF_CHANNEL] != SCSICF_CHANNEL_DEFAULT)
157 		return (0);
158 
159 	return (1);
160 }
161 
162 static void
163 scsibusattach(struct device *parent, struct device *self, void *aux)
164 {
165 	struct scsibus_softc *sc = device_private(self);
166 	struct scsipi_channel *chan = aux;
167 	struct scsi_initq *scsi_initq;
168 
169 	sc->sc_channel = chan;
170 	chan->chan_name = sc->sc_dev.dv_xname;
171 
172 	aprint_naive(": SCSI bus\n");
173 	aprint_normal(": %d target%s, %d lun%s per target\n",
174 	    chan->chan_ntargets,
175 	    chan->chan_ntargets == 1 ? "" : "s",
176 	    chan->chan_nluns,
177 	    chan->chan_nluns == 1 ? "" : "s");
178 
179 	if (scsipi_adapter_addref(chan->chan_adapter))
180 		return;
181 
182 	/* Initialize the channel structure first */
183 	chan->chan_init_cb = scsibus_config;
184 	chan->chan_init_cb_arg = sc;
185 
186 	scsi_initq = malloc(sizeof(struct scsi_initq), M_DEVBUF, M_WAITOK);
187 	scsi_initq->sc_channel = chan;
188 	TAILQ_INSERT_TAIL(&scsi_initq_head, scsi_initq, scsi_initq);
189         config_pending_incr();
190 	if (scsipi_channel_init(chan)) {
191 		aprint_error("%s: failed to init channel\n",
192 		    sc->sc_dev.dv_xname);
193 		return;
194 	}
195 }
196 
197 static void
198 scsibus_config(struct scsipi_channel *chan, void *arg)
199 {
200 	struct scsibus_softc *sc = arg;
201 	struct scsi_initq *scsi_initq;
202 
203 #ifndef SCSI_DELAY
204 #define SCSI_DELAY 2
205 #endif
206 	if ((chan->chan_flags & SCSIPI_CHAN_NOSETTLE) == 0 &&
207 	    SCSI_DELAY > 0) {
208 		aprint_normal(
209 		    "%s: waiting %d seconds for devices to settle...\n",
210 		    sc->sc_dev.dv_xname, SCSI_DELAY);
211 		/* ...an identifier we know no one will use... */
212 		(void) tsleep(scsibus_config, PRIBIO,
213 		    "scsidly", SCSI_DELAY * hz);
214 	}
215 
216 	/* Make sure the devices probe in scsibus order to avoid jitter. */
217 	simple_lock(&scsibus_interlock);
218 	for (;;) {
219 		scsi_initq = TAILQ_FIRST(&scsi_initq_head);
220 		if (scsi_initq->sc_channel == chan)
221 			break;
222 		ltsleep(&scsi_initq_head, PRIBIO, "scsi_initq", 0,
223 		    &scsibus_interlock);
224 	}
225 
226 	simple_unlock(&scsibus_interlock);
227 
228 	scsi_probe_bus(sc, -1, -1);
229 
230 	simple_lock(&scsibus_interlock);
231 	TAILQ_REMOVE(&scsi_initq_head, scsi_initq, scsi_initq);
232 	simple_unlock(&scsibus_interlock);
233 
234 	free(scsi_initq, M_DEVBUF);
235 	wakeup(&scsi_initq_head);
236 
237 	scsipi_adapter_delref(chan->chan_adapter);
238 
239 	config_pending_decr();
240 }
241 
242 static int
243 scsibusactivate(struct device *self, enum devact act)
244 {
245 	struct scsibus_softc *sc = device_private(self);
246 	struct scsipi_channel *chan = sc->sc_channel;
247 	struct scsipi_periph *periph;
248 	int target, lun, error = 0, s;
249 
250 	s = splbio();
251 	switch (act) {
252 	case DVACT_ACTIVATE:
253 		error = EOPNOTSUPP;
254 		break;
255 
256 	case DVACT_DEACTIVATE:
257 		for (target = 0; target < chan->chan_ntargets;
258 		     target++) {
259 			if (target == chan->chan_id)
260 				continue;
261 			for (lun = 0; lun < chan->chan_nluns; lun++) {
262 				periph = scsipi_lookup_periph(chan,
263 				    target, lun);
264 				if (periph == NULL)
265 					continue;
266 				error = config_deactivate(periph->periph_dev);
267 				if (error)
268 					goto out;
269 			}
270 		}
271 		break;
272 	}
273  out:
274 	splx(s);
275 	return (error);
276 }
277 
278 static int
279 scsibusdetach(struct device *self, int flags)
280 {
281 	struct scsibus_softc *sc = device_private(self);
282 	struct scsipi_channel *chan = sc->sc_channel;
283 	struct scsipi_periph *periph;
284 	int ctarget, clun;
285 	struct scsipi_xfer *xs;
286 	int error;
287 
288 
289 	/*
290 	 * Process outstanding commands (which will never complete as the
291 	 * controller is gone).
292 	 */
293 	for (ctarget = 0; ctarget < chan->chan_ntargets; ctarget++) {
294 		if (ctarget == chan->chan_id)
295 			continue;
296 		for (clun = 0; clun < chan->chan_nluns; clun++) {
297 			periph = scsipi_lookup_periph(chan, ctarget, clun);
298 			if (periph == NULL)
299 				continue;
300 			TAILQ_FOREACH(xs, &periph->periph_xferq, device_q) {
301 				callout_stop(&xs->xs_callout);
302 				xs->error = XS_DRIVER_STUFFUP;
303 				scsipi_done(xs);
304 			}
305 		}
306 	}
307 
308 	/*
309 	 * Detach all of the periphs.
310 	 */
311 	error = scsipi_target_detach(chan, -1, -1, flags);
312 
313 	/*
314 	 * Now shut down the channel.
315 	 * XXX only if no errors ?
316 	 */
317 	scsipi_channel_shutdown(chan);
318 	return (error);
319 }
320 
321 /*
322  * Probe the requested scsi bus. It must be already set up.
323  * target and lun optionally narrow the search if not -1
324  */
325 int
326 scsi_probe_bus(struct scsibus_softc *sc, int target, int lun)
327 {
328 	struct scsipi_channel *chan = sc->sc_channel;
329 	int maxtarget, mintarget, maxlun, minlun;
330 	int error;
331 
332 	if (target == -1) {
333 		maxtarget = chan->chan_ntargets - 1;
334 		mintarget = 0;
335 	} else {
336 		if (target < 0 || target >= chan->chan_ntargets)
337 			return (EINVAL);
338 		maxtarget = mintarget = target;
339 	}
340 
341 	if (lun == -1) {
342 		maxlun = chan->chan_nluns - 1;
343 		minlun = 0;
344 	} else {
345 		if (lun < 0 || lun >= chan->chan_nluns)
346 			return (EINVAL);
347 		maxlun = minlun = lun;
348 	}
349 
350 	/*
351 	 * Some HBAs provide an abstracted view of the bus; give them an
352 	 * oppertunity to re-scan it before we do.
353 	 */
354 	if (chan->chan_adapter->adapt_ioctl != NULL)
355 		(*chan->chan_adapter->adapt_ioctl)(chan, SCBUSIOLLSCAN, NULL,
356 		    0, curproc);
357 
358 	if ((error = scsipi_adapter_addref(chan->chan_adapter)) != 0)
359 		return (error);
360 	for (target = mintarget; target <= maxtarget; target++) {
361 		if (target == chan->chan_id)
362 			continue;
363 		for (lun = minlun; lun <= maxlun; lun++) {
364 			/*
365 			 * See if there's a device present, and configure it.
366 			 */
367 			if (scsi_probe_device(sc, target, lun) == 0)
368 				break;
369 			/* otherwise something says we should look further */
370 		}
371 
372 		/*
373 		 * Now that we've discovered all of the LUNs on this
374 		 * I_T Nexus, update the xfer mode for all of them
375 		 * that we know about.
376 		 */
377 		scsipi_set_xfer_mode(chan, target, 1);
378 	}
379 	scsipi_adapter_delref(chan->chan_adapter);
380 	return (0);
381 }
382 
383 static int
384 scsibusrescan(struct device *sc, const char *ifattr,
385     const int *locators)
386 {
387 
388 	KASSERT(ifattr && !strcmp(ifattr, "scsibus"));
389 	KASSERT(locators);
390 
391 	return (scsi_probe_bus((struct scsibus_softc *)sc,
392 		locators[SCSIBUSCF_TARGET], locators[SCSIBUSCF_LUN]));
393 }
394 
395 static void
396 scsidevdetached(struct device *sc, struct device *dev)
397 {
398 	struct scsibus_softc *ssc = (struct scsibus_softc *)sc;
399 	struct scsipi_channel *chan = ssc->sc_channel;
400 	struct scsipi_periph *periph;
401 	int target, lun;
402 
403 	target = device_locator(dev, SCSIBUSCF_TARGET);
404 	lun = device_locator(dev, SCSIBUSCF_LUN);
405 
406 	periph = scsipi_lookup_periph(chan, target, lun);
407 	KASSERT(periph->periph_dev == dev);
408 
409 	scsipi_remove_periph(chan, periph);
410 	free(periph, M_DEVBUF);
411 }
412 
413 /*
414  * Print out autoconfiguration information for a subdevice.
415  *
416  * This is a slight abuse of 'standard' autoconfiguration semantics,
417  * because 'print' functions don't normally print the colon and
418  * device information.  However, in this case that's better than
419  * either printing redundant information before the attach message,
420  * or having the device driver call a special function to print out
421  * the standard device information.
422  */
423 static int
424 scsibusprint(void *aux, const char *pnp)
425 {
426 	struct scsipibus_attach_args *sa = aux;
427 	struct scsipi_inquiry_pattern *inqbuf;
428 	u_int8_t type;
429 	const char *dtype;
430 	char vendor[33], product[65], revision[17];
431 	int target, lun;
432 
433 	if (pnp != NULL)
434 		aprint_normal("%s", pnp);
435 
436 	inqbuf = &sa->sa_inqbuf;
437 
438 	target = sa->sa_periph->periph_target;
439 	lun = sa->sa_periph->periph_lun;
440 	type = inqbuf->type & SID_TYPE;
441 
442 	dtype = scsipi_dtype(type);
443 
444 	scsipi_strvis(vendor, 33, inqbuf->vendor, 8);
445 	scsipi_strvis(product, 65, inqbuf->product, 16);
446 	scsipi_strvis(revision, 17, inqbuf->revision, 4);
447 
448 	aprint_normal(" target %d lun %d: <%s, %s, %s> %s %s",
449 	    target, lun, vendor, product, revision, dtype,
450 	    inqbuf->removable ? "removable" : "fixed");
451 
452 	return (UNCONF);
453 }
454 
455 static const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
456 	{{T_CDROM, T_REMOV,
457 	 "CHINON  ", "CD-ROM CDS-431  ", ""},     PQUIRK_NOLUNS},
458 	{{T_CDROM, T_REMOV,
459 	 "CHINON  ", "CD-ROM CDS-435  ", ""},     PQUIRK_NOLUNS},
460 	{{T_CDROM, T_REMOV,
461 	 "Chinon  ", "CD-ROM CDS-525  ", ""},     PQUIRK_NOLUNS},
462 	{{T_CDROM, T_REMOV,
463 	 "CHINON  ", "CD-ROM CDS-535  ", ""},     PQUIRK_NOLUNS},
464 	{{T_CDROM, T_REMOV,
465 	 "DEC     ", "RRD42   (C) DEC ", ""},     PQUIRK_NOLUNS},
466 	{{T_CDROM, T_REMOV,
467 	 "DENON   ", "DRD-25X         ", "V"},    PQUIRK_NOLUNS},
468 	{{T_CDROM, T_REMOV,
469 	 "GENERIC ", "CRD-BP2         ", ""},     PQUIRK_NOLUNS},
470 	{{T_CDROM, T_REMOV,
471 	 "HP      ", "C4324/C4325     ", ""},     PQUIRK_NOLUNS},
472 	{{T_CDROM, T_REMOV,
473 	 "IMS     ", "CDD521/10       ", "2.06"}, PQUIRK_NOLUNS},
474 	{{T_CDROM, T_REMOV,
475 	 "MATSHITA", "CD-ROM CR-5XX   ", "1.0b"}, PQUIRK_NOLUNS},
476 	{{T_CDROM, T_REMOV,
477 	 "MEDAVIS ", "RENO CD-ROMX2A  ", ""},     PQUIRK_NOLUNS},
478 	{{T_CDROM, T_REMOV,
479 	 "MEDIAVIS", "CDR-H93MV       ", "1.3"},  PQUIRK_NOLUNS},
480 	{{T_CDROM, T_REMOV,
481 	 "NEC     ", "CD-ROM DRIVE:502", ""},     PQUIRK_NOLUNS},
482 	{{T_CDROM, T_REMOV,
483 	 "NEC     ", "CD-ROM DRIVE:55 ", ""},     PQUIRK_NOLUNS},
484 	{{T_CDROM, T_REMOV,
485 	 "NEC     ", "CD-ROM DRIVE:83 ", ""},     PQUIRK_NOLUNS},
486 	{{T_CDROM, T_REMOV,
487 	 "NEC     ", "CD-ROM DRIVE:84 ", ""},     PQUIRK_NOLUNS},
488 	{{T_CDROM, T_REMOV,
489 	 "NEC     ", "CD-ROM DRIVE:841", ""},     PQUIRK_NOLUNS},
490         {{T_CDROM, T_REMOV,
491 	 "OLYMPUS ", "CDS620E         ", "1.1d"},
492 			       PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOCAPACITY},
493 	{{T_CDROM, T_REMOV,
494 	 "PIONEER ", "CD-ROM DR-124X  ", "1.01"}, PQUIRK_NOLUNS},
495         {{T_CDROM, T_REMOV,
496          "PLEXTOR ", "CD-ROM PX-4XCS  ", "1.01"},
497                                PQUIRK_NOLUNS|PQUIRK_NOSYNC},
498 	{{T_CDROM, T_REMOV,
499 	 "SONY    ", "CD-ROM CDU-541  ", ""},     PQUIRK_NOLUNS},
500 	{{T_CDROM, T_REMOV,
501 	 "SONY    ", "CD-ROM CDU-55S  ", ""},     PQUIRK_NOLUNS},
502 	{{T_CDROM, T_REMOV,
503 	 "SONY    ", "CD-ROM CDU-561  ", ""},     PQUIRK_NOLUNS},
504 	{{T_CDROM, T_REMOV,
505 	 "SONY    ", "CD-ROM CDU-76S", ""},
506 				PQUIRK_NOLUNS|PQUIRK_NOSYNC|PQUIRK_NOWIDE},
507 	{{T_CDROM, T_REMOV,
508 	 "SONY    ", "CD-ROM CDU-8003A", ""},     PQUIRK_NOLUNS},
509 	{{T_CDROM, T_REMOV,
510 	 "SONY    ", "CD-ROM CDU-8012 ", ""},     PQUIRK_NOLUNS},
511 	{{T_CDROM, T_REMOV,
512 	 "TEAC    ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
513 	{{T_CDROM, T_REMOV,
514 	 "TEAC    ", "CD-ROM CD-56S   ", "1.0B"}, PQUIRK_NOLUNS},
515 	{{T_CDROM, T_REMOV,
516 	 "TEXEL   ", "CD-ROM          ", "1.06"}, PQUIRK_NOLUNS},
517 	{{T_CDROM, T_REMOV,
518 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.09"}, PQUIRK_NOLUNS},
519 	{{T_CDROM, T_REMOV,
520 	 "TEXEL   ", "CD-ROM DM-XX24 K", "1.10"}, PQUIRK_NOLUNS},
521 	{{T_CDROM, T_REMOV,
522 	 "TOSHIBA ", "XM-4101TASUNSLCD", ""}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
523 	/* "IBM CDRM00201     !F" 0724 is an IBM OEM Toshiba XM-4101BME */
524 	{{T_CDROM, T_REMOV,
525 	 "IBM     ", "CDRM00201     !F", "0724"}, PQUIRK_NOLUNS|PQUIRK_NOSYNC},
526 	{{T_CDROM, T_REMOV,
527 	 "ShinaKen", "CD-ROM DM-3x1S",   "1.04"}, PQUIRK_NOLUNS},
528 	{{T_CDROM, T_REMOV,
529 	 "JVC     ", "R2626",            ""},     PQUIRK_NOLUNS},
530 	{{T_CDROM, T_REMOV,
531 	 "YAMAHA", "CRW8424S",           ""},     PQUIRK_NOLUNS},
532 	{{T_CDROM, T_REMOV,
533 	 "NEC     ", "CD-ROM DRIVE:222", ""},	  PQUIRK_NOLUNS|PQUIRK_NOSYNC},
534 
535 	{{T_DIRECT, T_FIXED,
536 	 "MICROP  ", "1588-15MBSUN0669", ""},     PQUIRK_AUTOSAVE},
537 	{{T_DIRECT, T_FIXED,
538 	 "MICROP  ", "2217-15MQ1091501", ""},     PQUIRK_NOSYNCCACHE},
539 	{{T_OPTICAL, T_REMOV,
540 	 "EPSON   ", "OMD-5010        ", "3.08"}, PQUIRK_NOLUNS},
541 	{{T_DIRECT, T_FIXED,
542 	 "ADAPTEC ", "AEC-4412BD",       "1.2A"}, PQUIRK_NOMODESENSE},
543 	{{T_DIRECT, T_FIXED,
544 	 "ADAPTEC ", "ACB-4000",         ""},     PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE|PQUIRK_NOMODESENSE},
545 	{{T_DIRECT, T_FIXED,
546 	 "DEC     ", "RZ55     (C) DEC", ""},     PQUIRK_AUTOSAVE},
547 	{{T_DIRECT, T_FIXED,
548 	 "EMULEX  ", "MD21/S2     ESDI", "A00"},
549 				PQUIRK_FORCELUNS|PQUIRK_AUTOSAVE},
550 	{{T_DIRECT, T_FIXED,
551 	 "MICROP",  "1548-15MZ1077801",  "HZ2P"}, PQUIRK_NOTAG},
552 	{{T_DIRECT, T_FIXED,
553 	 "HP      ", "C372",             ""},     PQUIRK_NOTAG},
554 	{{T_DIRECT, T_FIXED,
555 	 "IBMRAID ", "0662S",		 ""},     PQUIRK_AUTOSAVE},
556 	{{T_DIRECT, T_FIXED,
557 	 "IBM     ", "0663H",		 ""},     PQUIRK_AUTOSAVE},
558 	{{T_DIRECT, T_FIXED,
559 	 "IBM",	     "0664",		 ""},     PQUIRK_AUTOSAVE},
560 	{{T_DIRECT, T_FIXED,
561 	/* improperly report DT-only sync mode */
562 	 "IBM     ", "DXHS36D",		 ""},
563 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
564 	{{T_DIRECT, T_FIXED,
565 	 "IBM     ", "DXHS18Y",		 ""},
566 				PQUIRK_CAP_SYNC|PQUIRK_CAP_WIDE16},
567 	{{T_DIRECT, T_FIXED,
568 	 "IBM     ", "H3171-S2",	 ""},
569 				PQUIRK_NOLUNS|PQUIRK_AUTOSAVE},
570 	{{T_DIRECT, T_FIXED,
571 	 "IBM     ", "KZ-C",		 ""},	  PQUIRK_AUTOSAVE},
572 	/* Broken IBM disk */
573 	{{T_DIRECT, T_FIXED,
574 	 ""	   , "DFRSS2F",		 ""},	  PQUIRK_AUTOSAVE},
575 	{{T_DIRECT, T_FIXED,
576 	 "Initio  ", "",		 ""},	  PQUIRK_NOBIGMODESENSE},
577 	{{T_DIRECT, T_REMOV,
578 	 "MPL     ", "MC-DISK-        ", ""},     PQUIRK_NOLUNS},
579 	{{T_DIRECT, T_FIXED,
580 	 "MAXTOR  ", "XT-3280         ", ""},     PQUIRK_NOLUNS},
581 	{{T_DIRECT, T_FIXED,
582 	 "MAXTOR  ", "XT-4380S        ", ""},     PQUIRK_NOLUNS},
583 	{{T_DIRECT, T_FIXED,
584 	 "MAXTOR  ", "MXT-1240S       ", ""},     PQUIRK_NOLUNS},
585 	{{T_DIRECT, T_FIXED,
586 	 "MAXTOR  ", "XT-4170S        ", ""},     PQUIRK_NOLUNS},
587 	{{T_DIRECT, T_FIXED,
588 	 "MAXTOR  ", "XT-8760S",         ""},     PQUIRK_NOLUNS},
589 	{{T_DIRECT, T_FIXED,
590 	 "MAXTOR  ", "LXT-213S        ", ""},     PQUIRK_NOLUNS},
591 	{{T_DIRECT, T_FIXED,
592 	 "MAXTOR  ", "LXT-213S SUN0207", ""},     PQUIRK_NOLUNS},
593 	{{T_DIRECT, T_FIXED,
594 	 "MAXTOR  ", "LXT-200S        ", ""},     PQUIRK_NOLUNS},
595 	{{T_DIRECT, T_FIXED,
596 	 "MEGADRV ", "EV1000",           ""},     PQUIRK_NOMODESENSE},
597 	{{T_DIRECT, T_FIXED,
598 	 "MICROP", "1991-27MZ",          ""},     PQUIRK_NOTAG},
599 	{{T_DIRECT, T_FIXED,
600 	 "MST     ", "SnapLink        ", ""},     PQUIRK_NOLUNS},
601 	{{T_DIRECT, T_FIXED,
602 	 "NEC     ", "D3847           ", "0307"}, PQUIRK_NOLUNS},
603 	{{T_DIRECT, T_FIXED,
604 	 "QUANTUM ", "ELS85S          ", ""},     PQUIRK_AUTOSAVE},
605 	{{T_DIRECT, T_FIXED,
606 	 "QUANTUM ", "LPS525S         ", ""},     PQUIRK_NOLUNS},
607 	{{T_DIRECT, T_FIXED,
608 	 "QUANTUM ", "P105S 910-10-94x", ""},     PQUIRK_NOLUNS},
609 	{{T_DIRECT, T_FIXED,
610 	 "QUANTUM ", "PD1225S         ", ""},     PQUIRK_NOLUNS},
611 	{{T_DIRECT, T_FIXED,
612 	 "QUANTUM ", "PD210S   SUN0207", ""},     PQUIRK_NOLUNS},
613 	{{T_DIRECT, T_FIXED,
614 	 "QUANTUM ", "ATLAS IV 9 WLS", "0A0A"},   PQUIRK_CAP_NODT},
615 	{{T_DIRECT, T_FIXED,
616 	 "RODIME  ", "RO3000S         ", ""},     PQUIRK_NOLUNS},
617 	{{T_DIRECT, T_FIXED,
618 	 "SEAGATE ", "ST125N          ", ""},     PQUIRK_NOLUNS},
619 	{{T_DIRECT, T_FIXED,
620 	 "SEAGATE ", "ST157N          ", ""},     PQUIRK_NOLUNS},
621 	{{T_DIRECT, T_FIXED,
622 	 "SEAGATE ", "ST296           ", ""},     PQUIRK_NOLUNS},
623 	{{T_DIRECT, T_FIXED,
624 	 "SEAGATE ", "ST296N          ", ""},     PQUIRK_NOLUNS},
625 	{{T_DIRECT, T_FIXED,
626 	 "SEAGATE ", "ST318404LC      ", ""},     PQUIRK_NOLUNS},
627 	{{T_DIRECT, T_FIXED,
628 	 "SEAGATE ", "ST15150N        ", ""},     PQUIRK_NOTAG},
629 	{{T_DIRECT, T_FIXED,
630 	 "SEAGATE ", "ST19171",          ""},     PQUIRK_NOMODESENSE},
631 	{{T_DIRECT, T_FIXED,
632 	 "SEAGATE ", "ST32430N",         ""},     PQUIRK_CAP_SYNC},
633 	{{T_DIRECT, T_FIXED,
634 	 "SEAGATE ", "ST34501FC       ", ""},     PQUIRK_NOMODESENSE},
635 	{{T_DIRECT, T_FIXED,
636 	 "SEAGATE ", "SX910800N",        ""},     PQUIRK_NOTAG},
637 	{{T_DIRECT, T_FIXED,
638 	 "TOSHIBA ", "MK538FB         ", "6027"}, PQUIRK_NOLUNS},
639 	{{T_DIRECT, T_FIXED,
640 	 "MICROP  ", "1924",          ""},     PQUIRK_CAP_SYNC},
641 	{{T_DIRECT, T_FIXED,
642 	 "FUJITSU ", "M2266",         ""},     PQUIRK_CAP_SYNC},
643 	{{T_DIRECT, T_FIXED,
644 	 "FUJITSU ", "M2624S-512      ", ""},     PQUIRK_CAP_SYNC},
645 	{{T_DIRECT, T_FIXED,
646 	 "SEAGATE ", "SX336704LC"   , ""}, PQUIRK_CAP_SYNC | PQUIRK_CAP_WIDE16},
647 
648 	{{T_DIRECT, T_REMOV,
649 	 "IOMEGA", "ZIP 100",		 "J.03"}, PQUIRK_NOLUNS},
650 	{{T_DIRECT, T_REMOV,
651 	 "INSITE", "I325VM",             ""},     PQUIRK_NOLUNS},
652 
653 	/* XXX: QIC-36 tape behind Emulex adapter.  Very broken. */
654 	{{T_SEQUENTIAL, T_REMOV,
655 	 "        ", "                ", "    "}, PQUIRK_NOLUNS},
656 	{{T_SEQUENTIAL, T_REMOV,
657 	 "EMULEX  ", "MT-02 QIC       ", ""},     PQUIRK_NOLUNS},
658 	{{T_SEQUENTIAL, T_REMOV,
659 	 "CALIPER ", "CP150           ", ""},     PQUIRK_NOLUNS},
660 	{{T_SEQUENTIAL, T_REMOV,
661 	 "EXABYTE ", "EXB-8200        ", ""},     PQUIRK_NOLUNS},
662 	{{T_SEQUENTIAL, T_REMOV,
663 	 "SONY    ", "GY-10C          ", ""},     PQUIRK_NOLUNS},
664 	{{T_SEQUENTIAL, T_REMOV,
665 	 "SONY    ", "SDT-2000        ", "2.09"}, PQUIRK_NOLUNS},
666 	{{T_SEQUENTIAL, T_REMOV,
667 	 "SONY    ", "SDT-5000        ", "3."},   PQUIRK_NOSYNC|PQUIRK_NOWIDE},
668 	{{T_SEQUENTIAL, T_REMOV,
669 	 "SONY    ", "SDT-5200        ", "3."},   PQUIRK_NOLUNS},
670 	{{T_SEQUENTIAL, T_REMOV,
671 	 "TANDBERG", " TDC 3600       ", ""},     PQUIRK_NOLUNS},
672 	/* Following entry reported as a Tandberg 3600; ref. PR1933 */
673 	{{T_SEQUENTIAL, T_REMOV,
674 	 "ARCHIVE ", "VIPER 150  21247", ""},     PQUIRK_NOLUNS},
675 	/* Following entry for a Cipher ST150S; ref. PR4171 */
676 	{{T_SEQUENTIAL, T_REMOV,
677 	 "ARCHIVE ", "VIPER 1500 21247", "2.2G"}, PQUIRK_NOLUNS},
678 	{{T_SEQUENTIAL, T_REMOV,
679 	 "ARCHIVE ", "Python 28454-XXX", ""},     PQUIRK_NOLUNS},
680 	{{T_SEQUENTIAL, T_REMOV,
681 	 "WANGTEK ", "5099ES SCSI",      ""},     PQUIRK_NOLUNS},
682 	{{T_SEQUENTIAL, T_REMOV,
683 	 "WANGTEK ", "5150ES SCSI",      ""},     PQUIRK_NOLUNS},
684 	{{T_SEQUENTIAL, T_REMOV,
685 	 "WANGTEK ", "SCSI-36",		 ""},     PQUIRK_NOLUNS},
686 	{{T_SEQUENTIAL, T_REMOV,
687 	 "WangDAT ", "Model 1300      ", "02.4"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
688 	{{T_SEQUENTIAL, T_REMOV,
689 	 "WangDAT ", "Model 2600      ", "01.7"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
690 	{{T_SEQUENTIAL, T_REMOV,
691 	 "WangDAT ", "Model 3200      ", "02.2"}, PQUIRK_NOSYNC|PQUIRK_NOWIDE},
692 	{{T_SEQUENTIAL, T_REMOV,
693 	 "TEAC    ", "MT-2ST/N50      ", ""},     PQUIRK_NOLUNS},
694 
695 	{{T_SCANNER, T_FIXED,
696 	 "RICOH   ", "IS60            ", "1R08"}, PQUIRK_NOLUNS},
697 	{{T_SCANNER, T_FIXED,
698 	 "UMAX    ", "Astra 1200S     ", "V2.9"}, PQUIRK_NOLUNS},
699 	{{T_SCANNER, T_FIXED,
700 	 "UMAX    ", "Astra 1220S     ", ""},     PQUIRK_NOLUNS},
701 	{{T_SCANNER, T_FIXED,
702 	 "UMAX    ", "UMAX S-6E       ", "V2.0"}, PQUIRK_NOLUNS},
703 	{{T_SCANNER, T_FIXED,
704 	 "UMAX    ", "UMAX S-12       ", "V2.1"}, PQUIRK_NOLUNS},
705 	{{T_SCANNER, T_FIXED,
706 	 "ULTIMA  ", "A6000C          ", ""},     PQUIRK_NOLUNS},
707 	{{T_PROCESSOR, T_FIXED,
708 	 "SYMBIOS",  "",                 ""},     PQUIRK_NOLUNS},
709 	{{T_PROCESSOR, T_FIXED,
710 	 "LITRONIC", "PCMCIA          ", ""},     PQUIRK_NOLUNS},
711 	{{T_CHANGER, T_REMOV,
712 	 "SONY    ", "CDL1100         ", ""},     PQUIRK_NOLUNS},
713 	{{T_ENCLOSURE, T_FIXED,
714 	 "SUN     ", "SENA            ", ""},     PQUIRK_NOLUNS},
715 };
716 
717 /*
718  * given a target and lun, ask the device what
719  * it is, and find the correct driver table
720  * entry.
721  */
722 static int
723 scsi_probe_device(struct scsibus_softc *sc, int target, int lun)
724 {
725 	struct scsipi_channel *chan = sc->sc_channel;
726 	struct scsipi_periph *periph;
727 	struct scsipi_inquiry_data inqbuf;
728 	const struct scsi_quirk_inquiry_pattern *finger;
729 	int checkdtype, priority, docontinue, quirks;
730 	struct scsipibus_attach_args sa;
731 	struct cfdata *cf;
732 	int locs[SCSIBUSCF_NLOCS];
733 	struct device *chld;
734 
735 	/*
736 	 * Assume no more luns to search after this one.
737 	 * If we successfully get Inquiry data and after
738 	 * merging quirks we find we can probe for more
739 	 * luns, we will.
740 	 */
741 	docontinue = 0;
742 
743 	/* Skip this slot if it is already attached. */
744 	if (scsipi_lookup_periph(chan, target, lun) != NULL)
745 		return (docontinue);
746 
747 	periph = scsipi_alloc_periph(M_NOWAIT);
748 	if (periph == NULL) {
749 #ifdef	DIAGNOSTIC
750 		aprint_error(
751 		    "%s: cannot allocate periph for target %d lun %d\n",
752 		    sc->sc_dev.dv_xname, target, lun);
753 #endif
754 		return (ENOMEM);
755 	}
756 	periph->periph_channel = chan;
757 	periph->periph_switch = &scsi_probe_dev;
758 
759 	periph->periph_target = target;
760 	periph->periph_lun = lun;
761 	periph->periph_quirks = chan->chan_defquirks;
762 
763 #ifdef SCSIPI_DEBUG
764 	if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_SCSI &&
765 	    SCSIPI_DEBUG_TARGET == target &&
766 	    SCSIPI_DEBUG_LUN == lun)
767 		periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS;
768 #endif
769 
770 	/*
771 	 * Ask the device what it is
772 	 */
773 
774 #ifdef SCSI_2_DEF
775 	/* some devices need to be told to go to SCSI2 */
776 	/* However some just explode if you tell them this.. leave it out */
777 	scsi_change_def(periph, XS_CTL_DISCOVERY | XS_CTL_SILENT);
778 #endif /* SCSI_2_DEF */
779 
780 	/* Now go ask the device all about itself. */
781 	memset(&inqbuf, 0, sizeof(inqbuf));
782 	{
783 		u_int8_t *extension = &inqbuf.flags1;
784 		int len = 0;
785 		while (len < 3)
786 			extension[len++] = '\0';
787 		while (len < 3 + 28)
788 			extension[len++] = ' ';
789 		while (len < 3 + 28 + 20)
790 			extension[len++] = '\0';
791 		while (len < 3 + 28 + 20 + 1)
792 			extension[len++] = '\0';
793 		while (len < 3 + 28 + 20 + 1 + 1)
794 			extension[len++] = '\0';
795 		while (len < 3 + 28 + 20 + 1 + 1 + (8*2))
796 			extension[len++] = ' ';
797 	}
798 	if (scsipi_inquire(periph, &inqbuf,
799 	    XS_CTL_DISCOVERY | XS_CTL_DATA_ONSTACK | XS_CTL_SILENT) != 0)
800 		goto bad;
801 
802 	periph->periph_type = inqbuf.device & SID_TYPE;
803 	if (inqbuf.dev_qual2 & SID_REMOVABLE)
804 		periph->periph_flags |= PERIPH_REMOVABLE;
805 	periph->periph_version = inqbuf.version & SID_ANSII;
806 
807 	/*
808 	 * Any device qualifier that has the top bit set (qualifier&4 != 0)
809 	 * is vendor specific and won't match in this switch.
810 	 * All we do here is throw out bad/negative responses.
811 	 */
812 	checkdtype = 0;
813 	switch (inqbuf.device & SID_QUAL) {
814 	case SID_QUAL_LU_PRESENT:
815 		checkdtype = 1;
816 		break;
817 
818 	case SID_QUAL_LU_NOTPRESENT:
819 	case SID_QUAL_reserved:
820 	case SID_QUAL_LU_NOT_SUPP:
821 		goto bad;
822 
823 	default:
824 		break;
825 	}
826 
827 	/* Let the adapter driver handle the device separatley if it wants. */
828 	if (chan->chan_adapter->adapt_accesschk != NULL &&
829 	    (*chan->chan_adapter->adapt_accesschk)(periph, &sa.sa_inqbuf))
830 		goto bad;
831 
832 	if (checkdtype) {
833 		switch (periph->periph_type) {
834 		case T_DIRECT:
835 		case T_SEQUENTIAL:
836 		case T_PRINTER:
837 		case T_PROCESSOR:
838 		case T_WORM:
839 		case T_CDROM:
840 		case T_SCANNER:
841 		case T_OPTICAL:
842 		case T_CHANGER:
843 		case T_COMM:
844 		case T_IT8_1:
845 		case T_IT8_2:
846 		case T_STORARRAY:
847 		case T_ENCLOSURE:
848 		case T_SIMPLE_DIRECT:
849 		case T_OPTIC_CARD_RW:
850 		case T_OBJECT_STORED:
851 		default:
852 			break;
853 		case T_NODEVICE:
854 			goto bad;
855 		}
856 	}
857 
858 	sa.sa_periph = periph;
859 	sa.sa_inqbuf.type = inqbuf.device;
860 	sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
861 	    T_REMOV : T_FIXED;
862 	sa.sa_inqbuf.vendor = inqbuf.vendor;
863 	sa.sa_inqbuf.product = inqbuf.product;
864 	sa.sa_inqbuf.revision = inqbuf.revision;
865 	sa.scsipi_info.scsi_version = inqbuf.version;
866 	sa.sa_inqptr = &inqbuf;
867 
868 	finger = scsipi_inqmatch(
869 	    &sa.sa_inqbuf, scsi_quirk_patterns,
870 	    sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
871 	    sizeof(scsi_quirk_patterns[0]), &priority);
872 
873 	if (finger != NULL)
874 		quirks = finger->quirks;
875 	else
876 		quirks = 0;
877 
878 	/*
879 	 * Determine the operating mode capabilities of the device.
880 	 */
881 	if (periph->periph_version >= 2) {
882 		if ((inqbuf.flags3 & SID_CmdQue) != 0 &&
883 		    (quirks & PQUIRK_NOTAG) == 0)
884 			periph->periph_cap |= PERIPH_CAP_TQING;
885 		if ((inqbuf.flags3 & SID_Linked) != 0)
886 			periph->periph_cap |= PERIPH_CAP_LINKCMDS;
887 		if ((inqbuf.flags3 & SID_Sync) != 0 &&
888 		    (quirks & PQUIRK_NOSYNC) == 0)
889 			periph->periph_cap |= PERIPH_CAP_SYNC;
890 		if ((inqbuf.flags3 & SID_WBus16) != 0 &&
891 		    (quirks & PQUIRK_NOWIDE) == 0)
892 			periph->periph_cap |= PERIPH_CAP_WIDE16;
893 		if ((inqbuf.flags3 & SID_WBus32) != 0 &&
894 		    (quirks & PQUIRK_NOWIDE) == 0)
895 			periph->periph_cap |= PERIPH_CAP_WIDE32;
896 		if ((inqbuf.flags3 & SID_SftRe) != 0)
897 			periph->periph_cap |= PERIPH_CAP_SFTRESET;
898 		if ((inqbuf.flags3 & SID_RelAdr) != 0)
899 			periph->periph_cap |= PERIPH_CAP_RELADR;
900 		/* SPC-2 */
901 		if (periph->periph_version >= 3 &&
902 		    !(quirks & PQUIRK_CAP_NODT)){
903 			/*
904 			 * Report ST clocking though CAP_WIDExx/CAP_SYNC.
905 			 * If the device only supports DT, clear these
906 			 * flags (DT implies SYNC and WIDE)
907 			 */
908 			switch (inqbuf.flags4 & SID_Clocking) {
909 			case SID_CLOCKING_DT_ONLY:
910 				periph->periph_cap &=
911 				    ~(PERIPH_CAP_SYNC |
912 				      PERIPH_CAP_WIDE16 |
913 				      PERIPH_CAP_WIDE32);
914 				/* FALLTHROUGH */
915 			case SID_CLOCKING_SD_DT:
916 				periph->periph_cap |= PERIPH_CAP_DT;
917 				break;
918 			default: /* ST only or invalid */
919 				/* nothing to do */
920 				break;
921 			}
922 		}
923 		if (periph->periph_version >= 3) {
924 			if (inqbuf.flags4 & SID_IUS)
925 				periph->periph_cap |= PERIPH_CAP_IUS;
926 			if (inqbuf.flags4 & SID_QAS)
927 				periph->periph_cap |= PERIPH_CAP_QAS;
928 		}
929 	}
930 	if (quirks & PQUIRK_CAP_SYNC)
931 		periph->periph_cap |= PERIPH_CAP_SYNC;
932 	if (quirks & PQUIRK_CAP_WIDE16)
933 		periph->periph_cap |= PERIPH_CAP_WIDE16;
934 
935 	/*
936 	 * Now apply any quirks from the table.
937 	 */
938 	periph->periph_quirks |= quirks;
939 	if (periph->periph_version == 0 &&
940 	    (periph->periph_quirks & PQUIRK_FORCELUNS) == 0)
941 		periph->periph_quirks |= PQUIRK_NOLUNS;
942 
943 	if ((periph->periph_quirks & PQUIRK_NOLUNS) == 0)
944 		docontinue = 1;
945 
946 	locs[SCSIBUSCF_TARGET] = target;
947 	locs[SCSIBUSCF_LUN] = lun;
948 
949 	if ((cf = config_search_loc(config_stdsubmatch, &sc->sc_dev,
950 	     "scsibus", locs, &sa)) != NULL) {
951 		scsipi_insert_periph(chan, periph);
952 		/*
953 		 * XXX Can't assign periph_dev here, because we'll
954 		 * XXX need it before config_attach() returns.  Must
955 		 * XXX assign it in periph driver.
956 		 */
957 		chld = config_attach_loc(&sc->sc_dev, cf, locs, &sa,
958 					 scsibusprint);
959 	} else {
960 		scsibusprint(&sa, sc->sc_dev.dv_xname);
961 		aprint_normal(" not configured\n");
962 		goto bad;
963 	}
964 
965 	return (docontinue);
966 
967 bad:
968 	free(periph, M_DEVBUF);
969 	return (docontinue);
970 }
971 
972 /****** Entry points for user control of the SCSI bus. ******/
973 
974 static int
975 scsibusopen(dev_t dev, int flag, int fmt,
976     struct lwp *l)
977 {
978 	struct scsibus_softc *sc;
979 	int error, unit = minor(dev);
980 
981 	if (unit >= scsibus_cd.cd_ndevs ||
982 	    (sc = scsibus_cd.cd_devs[unit]) == NULL)
983 		return (ENXIO);
984 
985 	if (sc->sc_flags & SCSIBUSF_OPEN)
986 		return (EBUSY);
987 
988 	if ((error = scsipi_adapter_addref(sc->sc_channel->chan_adapter)) != 0)
989 		return (error);
990 
991 	sc->sc_flags |= SCSIBUSF_OPEN;
992 
993 	return (0);
994 }
995 
996 static int
997 scsibusclose(dev_t dev, int flag, int fmt,
998     struct lwp *l)
999 {
1000 	struct scsibus_softc *sc = scsibus_cd.cd_devs[minor(dev)];
1001 
1002 	scsipi_adapter_delref(sc->sc_channel->chan_adapter);
1003 
1004 	sc->sc_flags &= ~SCSIBUSF_OPEN;
1005 
1006 	return (0);
1007 }
1008 
1009 static int
1010 scsibusioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
1011 {
1012 	struct scsibus_softc *sc = scsibus_cd.cd_devs[minor(dev)];
1013 	struct scsipi_channel *chan = sc->sc_channel;
1014 	int error;
1015 
1016 	/*
1017 	 * Enforce write permission for ioctls that change the
1018 	 * state of the bus.  Host adapter specific ioctls must
1019 	 * be checked by the adapter driver.
1020 	 */
1021 	switch (cmd) {
1022 	case SCBUSIOSCAN:
1023 	case SCBUSIODETACH:
1024 	case SCBUSIORESET:
1025 		if ((flag & FWRITE) == 0)
1026 			return (EBADF);
1027 	}
1028 
1029 	switch (cmd) {
1030 	case SCBUSIOSCAN:
1031 	    {
1032 		struct scbusioscan_args *a =
1033 		    (struct scbusioscan_args *)addr;
1034 
1035 		error = scsi_probe_bus(sc, a->sa_target, a->sa_lun);
1036 		break;
1037 	    }
1038 
1039 	case SCBUSIODETACH:
1040 	    {
1041 		struct scbusiodetach_args *a =
1042 		    (struct scbusiodetach_args *)addr;
1043 
1044 		error = scsipi_target_detach(chan, a->sa_target, a->sa_lun, 0);
1045 		break;
1046 	    }
1047 
1048 
1049 	case SCBUSIORESET:
1050 		/* FALLTHROUGH */
1051 	default:
1052 		if (chan->chan_adapter->adapt_ioctl == NULL)
1053 			error = ENOTTY;
1054 		else
1055 			error = (*chan->chan_adapter->adapt_ioctl)(chan,
1056 			    cmd, addr, flag, l->l_proc);
1057 		break;
1058 	}
1059 
1060 	return (error);
1061 }
1062