xref: /netbsd-src/sys/dev/usb/umass_scsipi.c (revision f3b3760cdb540602cb6697147639e32b33c71687)
1 /*	$NetBSD: umass_scsipi.c,v 1.70 2021/12/31 14:24:16 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 1.70 2021/12/31 14:24:16 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
umass_scsi_attach(struct umass_softc * sc)129 umass_scsi_attach(struct umass_softc *sc)
130 {
131 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
132 	struct umass_scsipi_softc *scbus;
133 
134 	KASSERT(KERNEL_LOCKED_P());
135 
136 	scbus = umass_scsipi_setup(sc);
137 
138 	scbus->sc_channel.chan_bustype = &scsi_bustype;
139 	scbus->sc_channel.chan_ntargets = 2;
140 	scbus->sc_channel.chan_nluns = sc->maxlun + 1;
141 	scbus->sc_channel.chan_id = scbus->sc_channel.chan_ntargets - 1;
142 	DPRINTFM(UDMASS_USB, "sc %#jx: SCSI", (uintptr_t)sc, 0, 0, 0);
143 
144 	scbus->base.sc_child =
145 	    config_found(sc->sc_dev, &scbus->sc_channel, scsiprint,
146 			 CFARGS(.iattr = "scsi"));
147 
148 	return 0;
149 }
150 
151 void
umass_scsi_detach(struct umass_softc * sc)152 umass_scsi_detach(struct umass_softc *sc)
153 {
154 	struct umass_scsipi_softc *scbus = (struct umass_scsipi_softc *)sc->bus;
155 
156 	kmem_free(scbus, sizeof(*scbus));
157 	sc->bus = NULL;
158 }
159 #endif
160 
161 #if NATAPIBUS > 0
162 int
umass_atapi_attach(struct umass_softc * sc)163 umass_atapi_attach(struct umass_softc *sc)
164 {
165 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
166 	struct umass_scsipi_softc *scbus;
167 
168 	KASSERT(KERNEL_LOCKED_P());
169 
170 	scbus = umass_scsipi_setup(sc);
171 	scbus->sc_atapi_adapter.atapi_probe_device =  umass_atapi_probe_device;
172 
173 	scbus->sc_channel.chan_bustype = &umass_atapi_bustype;
174 	scbus->sc_channel.chan_ntargets = 2;
175 	scbus->sc_channel.chan_nluns = 1;
176 
177 	scbus->sc_channel.chan_defquirks |= sc->sc_busquirks;
178 	DPRINTFM(UDMASS_USB, "sc %#jxp: ATAPI", (uintptr_t)sc, 0, 0, 0);
179 
180 	scbus->base.sc_child =
181 	    config_found(sc->sc_dev, &scbus->sc_channel, atapiprint,
182 			 CFARGS(.iattr = "atapi"));
183 
184 	return 0;
185 }
186 
187 void
umass_atapi_detach(struct umass_softc * sc)188 umass_atapi_detach(struct umass_softc *sc)
189 {
190 	struct umass_scsipi_softc *scbus = (struct umass_scsipi_softc *)sc->bus;
191 
192 	kmem_free(scbus, sizeof(*scbus));
193 	sc->bus = NULL;
194 }
195 #endif
196 
197 Static struct umass_scsipi_softc *
umass_scsipi_setup(struct umass_softc * sc)198 umass_scsipi_setup(struct umass_softc *sc)
199 {
200 	struct umass_scsipi_softc *scbus;
201 
202 	scbus = kmem_zalloc(sizeof(*scbus), KM_SLEEP);
203 	sc->bus = &scbus->base;
204 
205 	/* Only use big commands for USB SCSI devices. */
206 	/* Do not ask for timeouts.  */
207 	sc->sc_busquirks |= PQUIRK_ONLYBIG|PQUIRK_NOREPSUPPOPC;
208 
209 	/* Fill in the adapter. */
210 	memset(&scbus->sc_adapter, 0, sizeof(scbus->sc_adapter));
211 	scbus->sc_adapter.adapt_dev = sc->sc_dev;
212 	scbus->sc_adapter.adapt_nchannels = 1;
213 	scbus->sc_adapter.adapt_request = umass_scsipi_request;
214 	scbus->sc_adapter.adapt_minphys = umass_scsipi_minphys;
215 	scbus->sc_adapter.adapt_ioctl = umass_scsipi_ioctl;
216 	scbus->sc_adapter.adapt_getgeom = umass_scsipi_getgeom;
217 	scbus->sc_adapter.adapt_flags = SCSIPI_ADAPT_MPSAFE;
218 
219 	/* Fill in the channel. */
220 	memset(&scbus->sc_channel, 0, sizeof(scbus->sc_channel));
221 	scbus->sc_channel.chan_adapter = &scbus->sc_adapter;
222 	scbus->sc_channel.chan_channel = 0;
223 	scbus->sc_channel.chan_flags = SCSIPI_CHAN_OPENINGS | SCSIPI_CHAN_NOSETTLE;
224 	scbus->sc_channel.chan_openings = 1;
225 	scbus->sc_channel.chan_max_periph = 1;
226 	scbus->sc_channel.chan_defquirks |= sc->sc_busquirks;
227 
228 	return scbus;
229 }
230 
231 Static void
umass_scsipi_request(struct scsipi_channel * chan,scsipi_adapter_req_t req,void * arg)232 umass_scsipi_request(struct scsipi_channel *chan,
233 		scsipi_adapter_req_t req, void *arg)
234 {
235 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
236 	struct scsipi_adapter *adapt = chan->chan_adapter;
237 	struct scsipi_periph *periph;
238 	struct scsipi_xfer *xs;
239 	struct umass_softc *sc = device_private(adapt->adapt_dev);
240 	struct umass_scsipi_softc *scbus = (struct umass_scsipi_softc *)sc->bus;
241 	struct scsipi_generic *cmd;
242 	int cmdlen;
243 	int dir;
244 #ifdef UMASS_DEBUG
245 	microtime(&sc->tv);
246 #endif
247 	switch(req) {
248 	case ADAPTER_REQ_RUN_XFER:
249 		xs = arg;
250 		periph = xs->xs_periph;
251 		DIF(UDMASS_UPPER, periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS);
252 
253 		DPRINTFM(UDMASS_CMD, "sc %#jxp: %jd:%jd xs=%#jxp",
254 		    (uintptr_t)sc, periph->periph_target, periph->periph_lun,
255 		    (uintptr_t)xs);
256 		DPRINTFM(UDMASS_CMD, "cmd=0x%02jx datalen=%jd (quirks=%#jx, "
257 		    "poll=%jd)", xs->cmd->opcode, xs->datalen,
258 		    periph->periph_quirks, !!(xs->xs_control & XS_CTL_POLL));
259 #if defined(UMASS_DEBUG) && defined(SCSIPI_DEBUG)
260 		if (umassdebug & UDMASS_SCSI)
261 			show_scsipi_xs(xs);
262 		else if (umassdebug & ~UDMASS_CMD)
263 			show_scsipi_cmd(xs);
264 #endif
265 
266 		if (sc->sc_dying) {
267 			xs->error = XS_DRIVER_STUFFUP;
268 			goto done;
269 		}
270 
271 #ifdef UMASS_DEBUG
272 		if (SCSIPI_BUSTYPE_TYPE(chan->chan_bustype->bustype_type) ==
273 		    SCSIPI_BUSTYPE_ATAPI ?
274 		    periph->periph_target != UMASS_ATAPI_DRIVE :
275 		    periph->periph_target == chan->chan_id) {
276 			DPRINTFM(UDMASS_SCSI, "sc %#jx: wrong SCSI ID %jd",
277 			    (uintptr_t)sc, periph->periph_target, 0, 0);
278 			xs->error = XS_DRIVER_STUFFUP;
279 			goto done;
280 		}
281 #endif
282 
283 		cmd = xs->cmd;
284 		cmdlen = xs->cmdlen;
285 
286 		dir = DIR_NONE;
287 		if (xs->datalen) {
288 			switch (xs->xs_control &
289 			    (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) {
290 			case XS_CTL_DATA_IN:
291 				dir = DIR_IN;
292 				break;
293 			case XS_CTL_DATA_OUT:
294 				dir = DIR_OUT;
295 				break;
296 			}
297 		}
298 
299 		if (xs->datalen > UMASS_MAX_TRANSFER_SIZE) {
300 			printf("umass_cmd: large datalen, %d\n", xs->datalen);
301 			xs->error = XS_DRIVER_STUFFUP;
302 			goto done;
303 		}
304 
305 		if (xs->xs_control & XS_CTL_POLL) {
306 			/* Use sync transfer. XXX Broken! */
307 			DPRINTFM(UDMASS_SCSI, "sync dir=%jd\n", dir, 0, 0, 0);
308 			scbus->sc_sync_status = USBD_INVAL;
309 			sc->sc_methods->wire_xfer(sc, periph->periph_lun, cmd,
310 						  cmdlen, xs->data,
311 						  xs->datalen, dir,
312 						  xs->timeout, USBD_SYNCHRONOUS,
313 						  umass_null_cb, xs);
314 			DPRINTFM(UDMASS_SCSI, "done err=%jd",
315 			    scbus->sc_sync_status, 0, 0, 0);
316 			switch (scbus->sc_sync_status) {
317 			case USBD_NORMAL_COMPLETION:
318 				xs->error = XS_NOERROR;
319 				break;
320 			case USBD_TIMEOUT:
321 				xs->error = XS_TIMEOUT;
322 				break;
323 			default:
324 				xs->error = XS_DRIVER_STUFFUP;
325 				break;
326 			}
327 			goto done;
328 		} else {
329 			DPRINTFM(UDMASS_SCSI, "async dir=%jd, cmdlen=%jd"
330 			    " datalen=%jd", dir, cmdlen, xs->datalen, 0);
331 			sc->sc_methods->wire_xfer(sc, periph->periph_lun, cmd,
332 						  cmdlen, xs->data,
333 						  xs->datalen, dir,
334 						  xs->timeout, 0,
335 						  umass_scsipi_cb, xs);
336 			return;
337 		}
338 
339 		/* Return if command finishes early. */
340  done:
341 		scsipi_done(xs);
342 		return;
343 	default:
344 		/* Not supported, nothing to do. */
345 		;
346 	}
347 }
348 
349 Static void
umass_scsipi_minphys(struct buf * bp)350 umass_scsipi_minphys(struct buf *bp)
351 {
352 #ifdef DIAGNOSTIC
353 	if (bp->b_bcount <= 0) {
354 		printf("umass_scsipi_minphys count(%d) <= 0\n",
355 		       bp->b_bcount);
356 		bp->b_bcount = UMASS_MAX_TRANSFER_SIZE;
357 	}
358 #endif
359 	if (bp->b_bcount > UMASS_MAX_TRANSFER_SIZE)
360 		bp->b_bcount = UMASS_MAX_TRANSFER_SIZE;
361 	minphys(bp);
362 }
363 
364 int
umass_scsipi_ioctl(struct scsipi_channel * chan,u_long cmd,void * arg,int flag,proc_t * p)365 umass_scsipi_ioctl(struct scsipi_channel *chan, u_long cmd,
366     void *arg, int flag, proc_t *p)
367 {
368 	/*struct umass_softc *sc = link->adapter_softc;*/
369 	/*struct umass_scsipi_softc *scbus = sc->bus;*/
370 
371 	switch (cmd) {
372 #if 0
373 	case SCBUSIORESET:
374 		ccb->ccb_h.status = CAM_REQ_INPROG;
375 		umass_reset(sc, umass_cam_cb, (void *) ccb);
376 		return 0;
377 #endif
378 	default:
379 		return ENOTTY;
380 	}
381 }
382 
383 Static int
umass_scsipi_getgeom(struct scsipi_periph * periph,struct disk_parms * dp,u_long sectors)384 umass_scsipi_getgeom(struct scsipi_periph *periph, struct disk_parms *dp,
385 		     u_long sectors)
386 {
387 	struct umass_softc *sc =
388 	    device_private(periph->periph_channel->chan_adapter->adapt_dev);
389 
390 	/* If it's not a floppy, we don't know what to do. */
391 	if (sc->sc_cmd != UMASS_CPROTO_UFI)
392 		return 0;
393 
394 	switch (sectors) {
395 	case 1440:
396 		/* Most likely a single density 3.5" floppy. */
397 		dp->heads = 2;
398 		dp->sectors = 9;
399 		dp->cyls = 80;
400 		return 1;
401 	case 2880:
402 		/* Most likely a double density 3.5" floppy. */
403 		dp->heads = 2;
404 		dp->sectors = 18;
405 		dp->cyls = 80;
406 		return 1;
407 	default:
408 		return 0;
409 	}
410 }
411 
412 Static void
umass_null_cb(struct umass_softc * sc,void * priv,int residue,int status)413 umass_null_cb(struct umass_softc *sc, void *priv, int residue, int status)
414 {
415 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
416 }
417 
418 Static void
umass_scsipi_cb(struct umass_softc * sc,void * priv,int residue,int status)419 umass_scsipi_cb(struct umass_softc *sc, void *priv, int residue, int status)
420 {
421 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
422 	struct umass_scsipi_softc *scbus = (struct umass_scsipi_softc *)sc->bus;
423 	struct scsipi_xfer *xs = priv;
424 	struct scsipi_periph *periph = xs->xs_periph;
425 	int cmdlen, senselen;
426 #ifdef UMASS_DEBUG
427 	struct timeval tv;
428 	u_int delta;
429 	microtime(&tv);
430 	delta = (tv.tv_sec - sc->tv.tv_sec) * 1000000 + tv.tv_usec - sc->tv.tv_usec;
431 	DPRINTFM(UDMASS_CMD, "delta=%ju: xs=%#jx residue=%jd status=%jd",
432 	    delta, (uintptr_t)xs, residue, status);
433 #endif
434 
435 
436 	xs->resid = residue;
437 
438 	switch (status) {
439 	case STATUS_CMD_OK:
440 		xs->error = XS_NOERROR;
441 		break;
442 
443 	case STATUS_CMD_UNKNOWN:
444 		/* FALLTHROUGH */
445 	case STATUS_CMD_FAILED:
446 		/* fetch sense data */
447 		sc->sc_sense = 1;
448 		memset(&scbus->sc_sense_cmd, 0, sizeof(scbus->sc_sense_cmd));
449 		scbus->sc_sense_cmd.opcode = SCSI_REQUEST_SENSE;
450 		scbus->sc_sense_cmd.byte2 = periph->periph_lun <<
451 		    SCSI_CMD_LUN_SHIFT;
452 
453 		if (sc->sc_cmd == UMASS_CPROTO_UFI ||
454 		    sc->sc_cmd == UMASS_CPROTO_ATAPI)
455 			cmdlen = UFI_COMMAND_LENGTH;	/* XXX */
456 		else
457 			cmdlen = sizeof(scbus->sc_sense_cmd);
458 		if (periph->periph_version < 0x04) /* SPC-2 */
459 			senselen = 18;
460 		else
461 			senselen = sizeof(xs->sense);
462 		scbus->sc_sense_cmd.length = senselen;
463 		sc->sc_methods->wire_xfer(sc, periph->periph_lun,
464 					  &scbus->sc_sense_cmd, cmdlen,
465 					  &xs->sense, senselen,
466 					  DIR_IN, xs->timeout, 0,
467 					  umass_scsipi_sense_cb, xs);
468 		return;
469 
470 	case STATUS_WIRE_FAILED:
471 		xs->error = XS_RESET;
472 		break;
473 
474 	case STATUS_TIMEOUT:
475 		xs->error = XS_TIMEOUT;
476 		break;
477 
478 	default:
479 		panic("%s: Unknown status %d in umass_scsipi_cb",
480 			device_xname(sc->sc_dev), status);
481 	}
482 
483 	DPRINTFM(UDMASS_CMD, "return xs->error=%jd, xs->xs_status=%#jx"
484 	    " xs->resid=%jd", xs->error, xs->xs_status, xs->resid, 0);
485 
486 	scsipi_done(xs);
487 }
488 
489 /*
490  * Finalise a completed autosense operation
491  */
492 Static void
umass_scsipi_sense_cb(struct umass_softc * sc,void * priv,int residue,int status)493 umass_scsipi_sense_cb(struct umass_softc *sc, void *priv, int residue,
494 		      int status)
495 {
496 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
497 	struct scsipi_xfer *xs = priv;
498 	size_t extra;
499 
500 	DPRINTFM(UDMASS_CMD, "sc %#jx: xs=%#jx residue=%jd status=%jd",
501 	    (uintptr_t)sc, (uintptr_t)xs, residue, status);
502 
503 	sc->sc_sense = 0;
504 	switch (status) {
505 	case STATUS_CMD_OK:
506 	case STATUS_CMD_UNKNOWN:
507 		/* getting sense data succeeded */
508 		extra = sizeof(xs->sense.scsi_sense)
509 		      - sizeof(xs->sense.scsi_sense.extra_bytes);
510 		if (residue <= extra)
511 			xs->error = XS_SENSE;
512 		else
513 			xs->error = XS_SHORTSENSE;
514 		break;
515 	default:
516 		DPRINTFM(UDMASS_SCSI, "sc %#jx: Autosense failed, status %jd",
517 		    (uintptr_t)sc, status, 0, 0);
518 		xs->error = XS_DRIVER_STUFFUP;
519 		break;
520 	}
521 
522 	DPRINTFM(UDMASS_CMD, "return xs->error=%jd, xs->xs_status=%#jx"
523 	    " xs->resid=%jd", xs->error, xs->xs_status, xs->resid, 0);
524 
525 	scsipi_done(xs);
526 }
527 
528 #if NATAPIBUS > 0
529 Static void
umass_atapi_probe_device(struct atapibus_softc * atapi,int target)530 umass_atapi_probe_device(struct atapibus_softc *atapi, int target)
531 {
532 	UMASSHIST_FUNC(); UMASSHIST_CALLED();
533 	struct scsipi_channel *chan = atapi->sc_channel;
534 	struct scsipi_periph *periph;
535 	struct scsipibus_attach_args sa;
536 	char vendor[33], product[65], revision[17];
537 	struct scsipi_inquiry_data inqbuf;
538 
539 	DPRINTFM(UDMASS_SCSI, "atapi=%#jx target=%jd", (uintptr_t)atapi,
540 	    target, 0, 0);
541 
542 	if (target != UMASS_ATAPI_DRIVE)	/* only probe drive 0 */
543 		return;
544 
545 	/* skip if already attached */
546 	if (scsipi_lookup_periph(chan, target, 0) != NULL) {
547 		return;
548 	}
549 
550 	periph = scsipi_alloc_periph(M_WAITOK);
551 	DIF(UDMASS_UPPER, periph->periph_dbflags |= 1); /* XXX 1 */
552 	periph->periph_channel = chan;
553 	periph->periph_switch = &atapi_probe_periphsw;
554 	periph->periph_target = target;
555 	periph->periph_quirks = chan->chan_defquirks;
556 
557 	DPRINTFM(UDMASS_SCSI, "doing inquiry", 0, 0, 0, 0);
558 	/* Now go ask the device all about itself. */
559 	memset(&inqbuf, 0, sizeof(inqbuf));
560 	if (scsipi_inquire(periph, &inqbuf, XS_CTL_DISCOVERY) != 0) {
561 		DPRINTFM(UDMASS_SCSI, "scsipi_inquire failed", 0, 0, 0, 0);
562 		free(periph, M_DEVBUF);
563 		return;
564 	}
565 
566 	strnvisx(vendor, sizeof(vendor), inqbuf.vendor, 8,
567 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
568 	strnvisx(product, sizeof(product), inqbuf.product, 16,
569 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
570 	strnvisx(revision, sizeof(revision), inqbuf.revision, 4,
571 	    VIS_TRIM|VIS_SAFE|VIS_OCTAL);
572 
573 	sa.sa_periph = periph;
574 	sa.sa_inqbuf.type = inqbuf.device;
575 	sa.sa_inqbuf.removable = inqbuf.dev_qual2 & SID_REMOVABLE ?
576 	    T_REMOV : T_FIXED;
577 	if (sa.sa_inqbuf.removable)
578 		periph->periph_flags |= PERIPH_REMOVABLE;
579 	sa.sa_inqbuf.vendor = vendor;
580 	sa.sa_inqbuf.product = product;
581 	sa.sa_inqbuf.revision = revision;
582 	sa.sa_inqptr = NULL;
583 
584 	atapi_probe_device(atapi, target, periph, &sa);
585 	/* atapi_probe_device() frees the periph when there is no device.*/
586 }
587 #endif
588