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