xref: /netbsd-src/sys/dev/usb/umass_scsipi.c (revision 82d56013d7b633d116a93943de88e08335357a7c)
1 /*	$NetBSD: umass_scsipi.c,v 1.68 2021/05/23 08:42:32 riastradh Exp $	*/
2 
3 /*
4  * Copyright (c) 2001, 2003, 2012 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Lennart Augustsson (lennart@augustsson.net) at
9  * Carlstedt Research & Technology, Charles M. Hamnnum and Matthew R. Green.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: umass_scsipi.c,v 1.68 2021/05/23 08:42:32 riastradh Exp $");
35 
36 #ifdef _KERNEL_OPT
37 #include "opt_usb.h"
38 #endif
39 
40 #include "atapibus.h"
41 #include "scsibus.h"
42 
43 #include <sys/param.h>
44 #include <sys/buf.h>
45 #include <sys/bufq.h>
46 #include <sys/conf.h>
47 #include <sys/device.h>
48 #include <sys/disk.h>		/* XXX */
49 #include <sys/ioctl.h>
50 #include <sys/kernel.h>
51 #include <sys/kmem.h>
52 #include <sys/lwp.h>
53 #include <sys/malloc.h>
54 #include <sys/systm.h>
55 
56 /* SCSI & ATAPI */
57 #include <sys/scsiio.h>
58 #include <dev/scsipi/scsi_spc.h>
59 #include <dev/scsipi/scsi_all.h>
60 #include <dev/scsipi/scsipi_all.h>
61 #include <dev/scsipi/scsiconf.h>
62 
63 #include <dev/scsipi/atapiconf.h>
64 
65 #include <dev/scsipi/scsipi_disk.h>
66 #include <dev/scsipi/scsi_disk.h>
67 #include <dev/scsipi/scsi_changer.h>
68 
69 #include <dev/scsipi/sdvar.h>	/* XXX */
70 
71 /* USB */
72 #include <dev/usb/usb.h>
73 #include <dev/usb/usbdi.h>
74 #include <dev/usb/usbdi_util.h>
75 #include <dev/usb/usbdevs.h>
76 #include <dev/usb/usbhist.h>
77 
78 #include <dev/usb/umassvar.h>
79 #include <dev/usb/umass_scsipi.h>
80 
81 struct umass_scsipi_softc {
82 	struct umassbus_softc	base;
83 
84 	struct atapi_adapter	sc_atapi_adapter;
85 #define sc_adapter sc_atapi_adapter._generic
86 	struct scsipi_channel sc_channel;
87 	usbd_status		sc_sync_status;
88 	struct scsi_request_sense	sc_sense_cmd;
89 };
90 
91 
92 #define SHORT_INQUIRY_LENGTH    36 /* XXX */
93 
94 #define UMASS_ATAPI_DRIVE	0
95 
96 Static void umass_scsipi_request(struct scsipi_channel *,
97 				 scsipi_adapter_req_t, void *);
98 Static void umass_scsipi_minphys(struct buf *);
99 Static int umass_scsipi_ioctl(struct scsipi_channel *, u_long,
100 			      void *, int, proc_t *);
101 Static int umass_scsipi_getgeom(struct scsipi_periph *,
102 				struct disk_parms *, u_long);
103 
104 Static void umass_null_cb(struct umass_softc *, void *,
105 			  int, int);
106 Static void umass_scsipi_cb(struct umass_softc *, void *,
107 			    int, int);
108 Static void umass_scsipi_sense_cb(struct umass_softc *, void *,
109 				  int, int);
110 
111 Static struct umass_scsipi_softc *umass_scsipi_setup(struct umass_softc *);
112 
113 #if NATAPIBUS > 0
114 Static void umass_atapi_probe_device(struct atapibus_softc *, int);
115 
116 const struct scsipi_bustype umass_atapi_bustype = {
117 	.bustype_type = SCSIPI_BUSTYPE_ATAPI,
118 	.bustype_cmd = atapi_scsipi_cmd,
119 	.bustype_interpret_sense = atapi_interpret_sense,
120 	.bustype_printaddr = atapi_print_addr,
121 	.bustype_kill_pending = scsi_kill_pending,
122 	.bustype_async_event_xfer_mode = NULL,
123 };
124 #endif
125 
126 
127 #if NSCSIBUS > 0
128 int
129 umass_scsi_attach(struct umass_softc *sc)
130 {
131 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
132 	struct umass_scsipi_softc *scbus;
133 
134 	scbus = umass_scsipi_setup(sc);
135 
136 	scbus->sc_channel.chan_bustype = &scsi_bustype;
137 	scbus->sc_channel.chan_ntargets = 2;
138 	scbus->sc_channel.chan_nluns = sc->maxlun + 1;
139 	scbus->sc_channel.chan_id = scbus->sc_channel.chan_ntargets - 1;
140 	DPRINTFM(UDMASS_USB, "sc %#jx: SCSI", (uintptr_t)sc, 0, 0, 0);
141 
142 	mutex_enter(&sc->sc_lock);
143 	sc->sc_refcnt++;
144 	mutex_exit(&sc->sc_lock);
145 	scbus->base.sc_child =
146 	    config_found(sc->sc_dev, &scbus->sc_channel, scsiprint,
147 			 CFARG_IATTR, "scsi",
148 			 CFARG_EOL);
149 	mutex_enter(&sc->sc_lock);
150 	if (--sc->sc_refcnt < 0)
151 		cv_broadcast(&sc->sc_detach_cv);
152 	mutex_exit(&sc->sc_lock);
153 
154 
155 	return 0;
156 }
157 
158 void
159 umass_scsi_detach(struct umass_softc *sc)
160 {
161 	struct umass_scsipi_softc *scbus = (struct umass_scsipi_softc *)sc->bus;
162 
163 	kmem_free(scbus, sizeof(*scbus));
164 	sc->bus = NULL;
165 }
166 #endif
167 
168 #if NATAPIBUS > 0
169 int
170 umass_atapi_attach(struct umass_softc *sc)
171 {
172 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
173 	struct umass_scsipi_softc *scbus;
174 
175 	scbus = umass_scsipi_setup(sc);
176 	scbus->sc_atapi_adapter.atapi_probe_device =  umass_atapi_probe_device;
177 
178 	scbus->sc_channel.chan_bustype = &umass_atapi_bustype;
179 	scbus->sc_channel.chan_ntargets = 2;
180 	scbus->sc_channel.chan_nluns = 1;
181 
182 	scbus->sc_channel.chan_defquirks |= sc->sc_busquirks;
183 	DPRINTFM(UDMASS_USB, "sc %#jxp: ATAPI", (uintptr_t)sc, 0, 0, 0);
184 
185 	mutex_enter(&sc->sc_lock);
186 	sc->sc_refcnt++;
187 	mutex_exit(&sc->sc_lock);
188 	scbus->base.sc_child =
189 	    config_found(sc->sc_dev, &scbus->sc_channel, atapiprint,
190 			 CFARG_IATTR, "atapi",
191 			 CFARG_EOL);
192 	mutex_enter(&sc->sc_lock);
193 	if (--sc->sc_refcnt < 0)
194 		cv_broadcast(&sc->sc_detach_cv);
195 	mutex_exit(&sc->sc_lock);
196 
197 	return 0;
198 }
199 
200 void
201 umass_atapi_detach(struct umass_softc *sc)
202 {
203 	struct umass_scsipi_softc *scbus = (struct umass_scsipi_softc *)sc->bus;
204 
205 	kmem_free(scbus, sizeof(*scbus));
206 	sc->bus = NULL;
207 }
208 #endif
209 
210 Static struct umass_scsipi_softc *
211 umass_scsipi_setup(struct umass_softc *sc)
212 {
213 	struct umass_scsipi_softc *scbus;
214 
215 	scbus = kmem_zalloc(sizeof(*scbus), KM_SLEEP);
216 	sc->bus = &scbus->base;
217 
218 	/* Only use big commands for USB SCSI devices. */
219 	/* Do not ask for timeouts.  */
220 	sc->sc_busquirks |= PQUIRK_ONLYBIG|PQUIRK_NOREPSUPPOPC;
221 
222 	/* Fill in the adapter. */
223 	memset(&scbus->sc_adapter, 0, sizeof(scbus->sc_adapter));
224 	scbus->sc_adapter.adapt_dev = sc->sc_dev;
225 	scbus->sc_adapter.adapt_nchannels = 1;
226 	scbus->sc_adapter.adapt_request = umass_scsipi_request;
227 	scbus->sc_adapter.adapt_minphys = umass_scsipi_minphys;
228 	scbus->sc_adapter.adapt_ioctl = umass_scsipi_ioctl;
229 	scbus->sc_adapter.adapt_getgeom = umass_scsipi_getgeom;
230 	scbus->sc_adapter.adapt_flags = SCSIPI_ADAPT_MPSAFE;
231 
232 	/* Fill in the channel. */
233 	memset(&scbus->sc_channel, 0, sizeof(scbus->sc_channel));
234 	scbus->sc_channel.chan_adapter = &scbus->sc_adapter;
235 	scbus->sc_channel.chan_channel = 0;
236 	scbus->sc_channel.chan_flags = SCSIPI_CHAN_OPENINGS | SCSIPI_CHAN_NOSETTLE;
237 	scbus->sc_channel.chan_openings = 1;
238 	scbus->sc_channel.chan_max_periph = 1;
239 	scbus->sc_channel.chan_defquirks |= sc->sc_busquirks;
240 
241 	return scbus;
242 }
243 
244 Static void
245 umass_scsipi_request(struct scsipi_channel *chan,
246 		scsipi_adapter_req_t req, void *arg)
247 {
248 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
249 	struct scsipi_adapter *adapt = chan->chan_adapter;
250 	struct scsipi_periph *periph;
251 	struct scsipi_xfer *xs;
252 	struct umass_softc *sc = device_private(adapt->adapt_dev);
253 	struct umass_scsipi_softc *scbus = (struct umass_scsipi_softc *)sc->bus;
254 	struct scsipi_generic *cmd;
255 	int cmdlen;
256 	int dir;
257 #ifdef UMASS_DEBUG
258 	microtime(&sc->tv);
259 #endif
260 	switch(req) {
261 	case ADAPTER_REQ_RUN_XFER:
262 		xs = arg;
263 		periph = xs->xs_periph;
264 		DIF(UDMASS_UPPER, periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS);
265 
266 		DPRINTFM(UDMASS_CMD, "sc %#jxp: %jd:%jd xs=%#jxp",
267 		    (uintptr_t)sc, periph->periph_target, periph->periph_lun,
268 		    (uintptr_t)xs);
269 		DPRINTFM(UDMASS_CMD, "cmd=0x%02jx datalen=%jd (quirks=%#jx, "
270 		    "poll=%jd)", xs->cmd->opcode, xs->datalen,
271 		    periph->periph_quirks, !!(xs->xs_control & XS_CTL_POLL));
272 #if defined(UMASS_DEBUG) && defined(SCSIPI_DEBUG)
273 		if (umassdebug & UDMASS_SCSI)
274 			show_scsipi_xs(xs);
275 		else if (umassdebug & ~UDMASS_CMD)
276 			show_scsipi_cmd(xs);
277 #endif
278 
279 		if (sc->sc_dying) {
280 			xs->error = XS_DRIVER_STUFFUP;
281 			goto done;
282 		}
283 
284 #ifdef UMASS_DEBUG
285 		if (SCSIPI_BUSTYPE_TYPE(chan->chan_bustype->bustype_type) ==
286 		    SCSIPI_BUSTYPE_ATAPI ?
287 		    periph->periph_target != UMASS_ATAPI_DRIVE :
288 		    periph->periph_target == chan->chan_id) {
289 			DPRINTFM(UDMASS_SCSI, "sc %#jx: wrong SCSI ID %jd",
290 			    (uintptr_t)sc, periph->periph_target, 0, 0);
291 			xs->error = XS_DRIVER_STUFFUP;
292 			goto done;
293 		}
294 #endif
295 
296 		cmd = xs->cmd;
297 		cmdlen = xs->cmdlen;
298 
299 		dir = DIR_NONE;
300 		if (xs->datalen) {
301 			switch (xs->xs_control &
302 			    (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) {
303 			case XS_CTL_DATA_IN:
304 				dir = DIR_IN;
305 				break;
306 			case XS_CTL_DATA_OUT:
307 				dir = DIR_OUT;
308 				break;
309 			}
310 		}
311 
312 		if (xs->datalen > UMASS_MAX_TRANSFER_SIZE) {
313 			printf("umass_cmd: large datalen, %d\n", xs->datalen);
314 			xs->error = XS_DRIVER_STUFFUP;
315 			goto done;
316 		}
317 
318 		if (xs->xs_control & XS_CTL_POLL) {
319 			/* Use sync transfer. XXX Broken! */
320 			DPRINTFM(UDMASS_SCSI, "sync dir=%jd\n", dir, 0, 0, 0);
321 			scbus->sc_sync_status = USBD_INVAL;
322 			sc->sc_methods->wire_xfer(sc, periph->periph_lun, cmd,
323 						  cmdlen, xs->data,
324 						  xs->datalen, dir,
325 						  xs->timeout, USBD_SYNCHRONOUS,
326 						  umass_null_cb, xs);
327 			DPRINTFM(UDMASS_SCSI, "done err=%jd",
328 			    scbus->sc_sync_status, 0, 0, 0);
329 			switch (scbus->sc_sync_status) {
330 			case USBD_NORMAL_COMPLETION:
331 				xs->error = XS_NOERROR;
332 				break;
333 			case USBD_TIMEOUT:
334 				xs->error = XS_TIMEOUT;
335 				break;
336 			default:
337 				xs->error = XS_DRIVER_STUFFUP;
338 				break;
339 			}
340 			goto done;
341 		} else {
342 			DPRINTFM(UDMASS_SCSI, "async dir=%jd, cmdlen=%jd"
343 			    " datalen=%jd", dir, cmdlen, xs->datalen, 0);
344 			sc->sc_methods->wire_xfer(sc, periph->periph_lun, cmd,
345 						  cmdlen, xs->data,
346 						  xs->datalen, dir,
347 						  xs->timeout, 0,
348 						  umass_scsipi_cb, xs);
349 			return;
350 		}
351 
352 		/* Return if command finishes early. */
353  done:
354 		scsipi_done(xs);
355 		return;
356 	default:
357 		/* Not supported, nothing to do. */
358 		;
359 	}
360 }
361 
362 Static void
363 umass_scsipi_minphys(struct buf *bp)
364 {
365 #ifdef DIAGNOSTIC
366 	if (bp->b_bcount <= 0) {
367 		printf("umass_scsipi_minphys count(%d) <= 0\n",
368 		       bp->b_bcount);
369 		bp->b_bcount = UMASS_MAX_TRANSFER_SIZE;
370 	}
371 #endif
372 	if (bp->b_bcount > UMASS_MAX_TRANSFER_SIZE)
373 		bp->b_bcount = UMASS_MAX_TRANSFER_SIZE;
374 	minphys(bp);
375 }
376 
377 int
378 umass_scsipi_ioctl(struct scsipi_channel *chan, u_long cmd,
379     void *arg, int flag, proc_t *p)
380 {
381 	/*struct umass_softc *sc = link->adapter_softc;*/
382 	/*struct umass_scsipi_softc *scbus = sc->bus;*/
383 
384 	switch (cmd) {
385 #if 0
386 	case SCBUSIORESET:
387 		ccb->ccb_h.status = CAM_REQ_INPROG;
388 		umass_reset(sc, umass_cam_cb, (void *) ccb);
389 		return 0;
390 #endif
391 	default:
392 		return ENOTTY;
393 	}
394 }
395 
396 Static int
397 umass_scsipi_getgeom(struct scsipi_periph *periph, struct disk_parms *dp,
398 		     u_long sectors)
399 {
400 	struct umass_softc *sc =
401 	    device_private(periph->periph_channel->chan_adapter->adapt_dev);
402 
403 	/* If it's not a floppy, we don't know what to do. */
404 	if (sc->sc_cmd != UMASS_CPROTO_UFI)
405 		return 0;
406 
407 	switch (sectors) {
408 	case 1440:
409 		/* Most likely a single density 3.5" floppy. */
410 		dp->heads = 2;
411 		dp->sectors = 9;
412 		dp->cyls = 80;
413 		return 1;
414 	case 2880:
415 		/* Most likely a double density 3.5" floppy. */
416 		dp->heads = 2;
417 		dp->sectors = 18;
418 		dp->cyls = 80;
419 		return 1;
420 	default:
421 		return 0;
422 	}
423 }
424 
425 Static void
426 umass_null_cb(struct umass_softc *sc, void *priv, int residue, int status)
427 {
428 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
429 }
430 
431 Static void
432 umass_scsipi_cb(struct umass_softc *sc, void *priv, int residue, int status)
433 {
434 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
435 	struct umass_scsipi_softc *scbus = (struct umass_scsipi_softc *)sc->bus;
436 	struct scsipi_xfer *xs = priv;
437 	struct scsipi_periph *periph = xs->xs_periph;
438 	int cmdlen, senselen;
439 #ifdef UMASS_DEBUG
440 	struct timeval tv;
441 	u_int delta;
442 	microtime(&tv);
443 	delta = (tv.tv_sec - sc->tv.tv_sec) * 1000000 + tv.tv_usec - sc->tv.tv_usec;
444 	DPRINTFM(UDMASS_CMD, "delta=%ju: xs=%#jx residue=%jd status=%jd",
445 	    delta, (uintptr_t)xs, residue, status);
446 #endif
447 
448 
449 	xs->resid = residue;
450 
451 	switch (status) {
452 	case STATUS_CMD_OK:
453 		xs->error = XS_NOERROR;
454 		break;
455 
456 	case STATUS_CMD_UNKNOWN:
457 		/* FALLTHROUGH */
458 	case STATUS_CMD_FAILED:
459 		/* fetch sense data */
460 		sc->sc_sense = 1;
461 		memset(&scbus->sc_sense_cmd, 0, sizeof(scbus->sc_sense_cmd));
462 		scbus->sc_sense_cmd.opcode = SCSI_REQUEST_SENSE;
463 		scbus->sc_sense_cmd.byte2 = periph->periph_lun <<
464 		    SCSI_CMD_LUN_SHIFT;
465 
466 		if (sc->sc_cmd == UMASS_CPROTO_UFI ||
467 		    sc->sc_cmd == UMASS_CPROTO_ATAPI)
468 			cmdlen = UFI_COMMAND_LENGTH;	/* XXX */
469 		else
470 			cmdlen = sizeof(scbus->sc_sense_cmd);
471 		if (periph->periph_version < 0x04) /* SPC-2 */
472 			senselen = 18;
473 		else
474 			senselen = sizeof(xs->sense);
475 		scbus->sc_sense_cmd.length = senselen;
476 		sc->sc_methods->wire_xfer(sc, periph->periph_lun,
477 					  &scbus->sc_sense_cmd, cmdlen,
478 					  &xs->sense, senselen,
479 					  DIR_IN, xs->timeout, 0,
480 					  umass_scsipi_sense_cb, xs);
481 		return;
482 
483 	case STATUS_WIRE_FAILED:
484 		xs->error = XS_RESET;
485 		break;
486 
487 	case STATUS_TIMEOUT:
488 		xs->error = XS_TIMEOUT;
489 		break;
490 
491 	default:
492 		panic("%s: Unknown status %d in umass_scsipi_cb",
493 			device_xname(sc->sc_dev), status);
494 	}
495 
496 	DPRINTFM(UDMASS_CMD, "return xs->error=%jd, xs->xs_status=%#jx"
497 	    " xs->resid=%jd", xs->error, xs->xs_status, xs->resid, 0);
498 
499 	scsipi_done(xs);
500 }
501 
502 /*
503  * Finalise a completed autosense operation
504  */
505 Static void
506 umass_scsipi_sense_cb(struct umass_softc *sc, void *priv, int residue,
507 		      int status)
508 {
509 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
510 	struct scsipi_xfer *xs = priv;
511 	size_t extra;
512 
513 	DPRINTFM(UDMASS_CMD, "sc %#jx: xs=%#jx residue=%jd status=%jd",
514 	    (uintptr_t)sc, (uintptr_t)xs, residue, status);
515 
516 	sc->sc_sense = 0;
517 	switch (status) {
518 	case STATUS_CMD_OK:
519 	case STATUS_CMD_UNKNOWN:
520 		/* getting sense data succeeded */
521 		extra = sizeof(xs->sense.scsi_sense)
522 		      - sizeof(xs->sense.scsi_sense.extra_bytes);
523 		if (residue <= extra)
524 			xs->error = XS_SENSE;
525 		else
526 			xs->error = XS_SHORTSENSE;
527 		break;
528 	default:
529 		DPRINTFM(UDMASS_SCSI, "sc %#jx: Autosense failed, status %jd",
530 		    (uintptr_t)sc, status, 0, 0);
531 		xs->error = XS_DRIVER_STUFFUP;
532 		break;
533 	}
534 
535 	DPRINTFM(UDMASS_CMD, "return xs->error=%jd, xs->xs_status=%#jx"
536 	    " xs->resid=%jd", xs->error, xs->xs_status, xs->resid, 0);
537 
538 	scsipi_done(xs);
539 }
540 
541 #if NATAPIBUS > 0
542 Static void
543 umass_atapi_probe_device(struct atapibus_softc *atapi, int target)
544 {
545 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
546 	struct scsipi_channel *chan = atapi->sc_channel;
547 	struct scsipi_periph *periph;
548 	struct scsipibus_attach_args sa;
549 	char vendor[33], product[65], revision[17];
550 	struct scsipi_inquiry_data inqbuf;
551 
552 	DPRINTFM(UDMASS_SCSI, "atapi=%#jx target=%jd", (uintptr_t)atapi,
553 	    target, 0, 0);
554 
555 	if (target != UMASS_ATAPI_DRIVE)	/* only probe drive 0 */
556 		return;
557 
558 	/* skip if already attached */
559 	if (scsipi_lookup_periph(chan, target, 0) != NULL) {
560 		return;
561 	}
562 
563 	periph = scsipi_alloc_periph(M_WAITOK);
564 	DIF(UDMASS_UPPER, periph->periph_dbflags |= 1); /* XXX 1 */
565 	periph->periph_channel = chan;
566 	periph->periph_switch = &atapi_probe_periphsw;
567 	periph->periph_target = target;
568 	periph->periph_quirks = chan->chan_defquirks;
569 
570 	DPRINTFM(UDMASS_SCSI, "doing inquiry", 0, 0, 0, 0);
571 	/* Now go ask the device all about itself. */
572 	memset(&inqbuf, 0, sizeof(inqbuf));
573 	if (scsipi_inquire(periph, &inqbuf, XS_CTL_DISCOVERY) != 0) {
574 		DPRINTFM(UDMASS_SCSI, "scsipi_inquire failed", 0, 0, 0, 0);
575 		free(periph, M_DEVBUF);
576 		return;
577 	}
578 
579 	strnvisx(vendor, sizeof(vendor), inqbuf.vendor, 8,
580 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
581 	strnvisx(product, sizeof(product), inqbuf.product, 16,
582 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
583 	strnvisx(revision, sizeof(revision), inqbuf.revision, 4,
584 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
585 
586 	sa.sa_periph = periph;
587 	sa.sa_inqbuf.type = inqbuf.device;
588 	sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
589 	    T_REMOV : T_FIXED;
590 	if (sa.sa_inqbuf.removable)
591 		periph->periph_flags |= PERIPH_REMOVABLE;
592 	sa.sa_inqbuf.vendor = vendor;
593 	sa.sa_inqbuf.product = product;
594 	sa.sa_inqbuf.revision = revision;
595 	sa.sa_inqptr = NULL;
596 
597 	atapi_probe_device(atapi, target, periph, &sa);
598 	/* atapi_probe_device() frees the periph when there is no device.*/
599 }
600 #endif
601