amr(4): Sync with FreeBSD.
[dragonfly.git] / sys / dev / raid / amr / amr_cam.c
1 /*-
2  * Copyright (c) 2000 Michael Smith
3  * Copyright (c) 2000 BSDi
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *      notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *      notice, this list of conditions and the following disclaimer in the
13  *      documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 /*-
28  * Copyright (c) 2002 Eric Moore
29  * Copyright (c) 2002 LSI Logic Corporation
30  * All rights reserved.
31  *
32  * Redistribution and use in source and binary forms, with or without
33  * modification, are permitted provided that the following conditions
34  * are met:
35  * 1. Redistributions of source code must retain the above copyright
36  *      notice, this list of conditions and the following disclaimer.
37  * 2. Redistributions in binary form must reproduce the above copyright
38  *      notice, this list of conditions and the following disclaimer in the
39  *      documentation and/or other materials provided with the distribution.
40  * 3. The party using or redistributing the source code and binary forms
41  *      agrees to the disclaimer below and the terms and conditions set forth
42  *      herein.
43  *
44  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54  * SUCH DAMAGE.
55  *
56  * $FreeBSD: src/sys/dev/amr/amr_cam.c,v 1.28 2008/11/03 00:53:54 scottl Exp $
57  */
58
59 #include <sys/param.h>
60 #include <sys/systm.h>
61 #include <sys/malloc.h>
62 #include <sys/kernel.h>
63 #include <sys/module.h>
64
65 #include <sys/bio.h>
66 #include <sys/bus.h>
67 #include <sys/conf.h>
68 #include <sys/stat.h>
69
70 #include <bus/cam/cam.h>
71 #include <bus/cam/cam_ccb.h>
72 #include <bus/cam/cam_sim.h>
73 #include <bus/cam/cam_xpt.h>
74 #include <bus/cam/cam_xpt_sim.h>
75 #include <bus/cam/cam_debug.h>
76 #include <bus/cam/scsi/scsi_all.h>
77 #include <bus/cam/scsi/scsi_message.h>
78
79 #include <dev/raid/amr/amrreg.h>
80 #include <dev/raid/amr/amrvar.h>
81
82 static int      amr_cam_probe(device_t dev);
83 static int      amr_cam_attach(device_t dev);
84 static int      amr_cam_detach(device_t dev);
85 static void     amr_cam_action(struct cam_sim *sim, union ccb *ccb);
86 static void     amr_cam_poll(struct cam_sim *sim);
87 static void     amr_cam_complete(struct amr_command *ac);
88 static int      amr_cam_command(struct amr_softc *sc, struct amr_command **acp);
89
90 static devclass_t       amr_pass_devclass;
91
92 static device_method_t  amr_pass_methods[] = {
93         DEVMETHOD(device_probe,         amr_cam_probe),
94         DEVMETHOD(device_attach,        amr_cam_attach),
95         DEVMETHOD(device_detach,        amr_cam_detach),
96         { 0, 0 }
97 };
98
99 static driver_t amr_pass_driver = {
100         "amrp",
101         amr_pass_methods,
102         0
103 };
104
105 DRIVER_MODULE(amrp, amr, amr_pass_driver, amr_pass_devclass, 0, 0);
106 MODULE_DEPEND(amrp, cam, 1, 1, 1);
107
108 MALLOC_DEFINE(M_AMRCAM, "amrcam", "AMR CAM memory");
109
110 /***********************************************************************
111  * Enqueue/dequeue functions
112  */
113 static __inline void
114 amr_enqueue_ccb(struct amr_softc *sc, union ccb *ccb)
115 {
116
117         TAILQ_INSERT_TAIL(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
118 }
119
120 static __inline void
121 amr_requeue_ccb(struct amr_softc *sc, union ccb *ccb)
122 {
123
124         TAILQ_INSERT_HEAD(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
125 }
126
127 static __inline union ccb *
128 amr_dequeue_ccb(struct amr_softc *sc)
129 {
130         union ccb       *ccb;
131
132         if ((ccb = (union ccb *)TAILQ_FIRST(&sc->amr_cam_ccbq)) != NULL)
133                 TAILQ_REMOVE(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
134         return(ccb);
135 }
136
137 static int
138 amr_cam_probe(device_t dev)
139 {
140         return (0);
141 }
142
143 /********************************************************************************
144  * Attach our 'real' SCSI channels to CAM
145  */
146 static int
147 amr_cam_attach(device_t dev)
148 {
149         struct amr_softc *sc;
150         struct cam_devq *devq;
151         int chn, error;
152
153         sc = device_get_softc(dev);
154
155         /* initialise the ccb queue */
156         TAILQ_INIT(&sc->amr_cam_ccbq);
157
158         /*
159          * Allocate a devq for all our channels combined.  This should
160          * allow for the maximum number of SCSI commands we will accept
161          * at one time. Save the pointer in the softc so we can find it later
162          * during detach.
163          */
164         if ((devq = cam_simq_alloc(AMR_MAX_SCSI_CMDS)) == NULL)
165                 return(ENOMEM);
166         sc->amr_cam_devq = devq;
167
168         /*
169          * Iterate over our channels, registering them with CAM
170          */
171         for (chn = 0; chn < sc->amr_maxchan; chn++) {
172
173                 /* allocate a sim */
174                 if ((sc->amr_cam_sim[chn] = cam_sim_alloc(amr_cam_action,
175                     amr_cam_poll, "amr", sc, device_get_unit(sc->amr_dev),
176                     &sc->amr_list_lock, 1, AMR_MAX_SCSI_CMDS, devq)) == NULL) {
177                         device_printf(sc->amr_dev, "CAM SIM attach failed\n");
178                         return(ENOMEM);
179                 }
180
181                 /* register the bus ID so we can get it later */
182                 lockmgr(&sc->amr_list_lock, LK_EXCLUSIVE);
183                 error = xpt_bus_register(sc->amr_cam_sim[chn], chn);
184                 lockmgr(&sc->amr_list_lock, LK_RELEASE);
185                 if (error) {
186                         device_printf(sc->amr_dev,
187                             "CAM XPT bus registration failed\n");
188                         return(ENXIO);
189                 }
190         }
191         /*
192          * XXX we should scan the config and work out which devices are
193          * actually protected.
194          */
195         sc->amr_cam_command = amr_cam_command;
196         return(0);
197 }
198
199 /********************************************************************************
200  * Disconnect ourselves from CAM
201  */
202 static int
203 amr_cam_detach(device_t dev)
204 {
205         struct amr_softc *sc;
206         int             chn;
207
208         sc = device_get_softc(dev);
209         lockmgr(&sc->amr_list_lock, LK_EXCLUSIVE);
210         for (chn = 0; chn < sc->amr_maxchan; chn++) {
211                 /*
212                  * If a sim was allocated for this channel, free it
213                  */
214                 if (sc->amr_cam_sim[chn] != NULL) {
215                         xpt_bus_deregister(cam_sim_path(sc->amr_cam_sim[chn]));
216                         cam_sim_free(sc->amr_cam_sim[chn]);
217                 }
218         }
219         lockmgr(&sc->amr_list_lock, LK_RELEASE);
220
221         return (0);
222 }
223
224 /***********************************************************************
225  ***********************************************************************
226                         CAM passthrough interface
227  ***********************************************************************
228  ***********************************************************************/
229
230 /***********************************************************************
231  * Handle a request for action from CAM
232  */
233 static void
234 amr_cam_action(struct cam_sim *sim, union ccb *ccb)
235 {
236         struct amr_softc        *sc = cam_sim_softc(sim);
237
238         switch(ccb->ccb_h.func_code) {
239
240         /*
241          * Perform SCSI I/O to a physical device.
242          */
243         case XPT_SCSI_IO:
244         {
245                 struct ccb_hdr          *ccbh = &ccb->ccb_h;
246                 struct ccb_scsiio       *csio = &ccb->csio;
247
248                 /* Validate the CCB */
249                 ccbh->status = CAM_REQ_INPROG;
250
251                 /* check the CDB length */
252                 if (csio->cdb_len > AMR_MAX_EXTCDB_LEN)
253                         ccbh->status = CAM_REQ_INVALID;
254
255                 if ((csio->cdb_len > AMR_MAX_CDB_LEN) &&
256                     (sc->support_ext_cdb == 0))
257                         ccbh->status = CAM_REQ_INVALID;
258
259                 /* check that the CDB pointer is not to a physical address */
260                 if ((ccbh->flags & CAM_CDB_POINTER) &&
261                     (ccbh->flags & CAM_CDB_PHYS))
262                         ccbh->status = CAM_REQ_INVALID;
263                 /*
264                  * if there is data transfer, it must be to/from a virtual
265                  * address
266                  */
267                 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
268                         if (ccbh->flags & CAM_DATA_PHYS)
269                                 /* we can't map it */
270                                 ccbh->status = CAM_REQ_INVALID;
271                         if (ccbh->flags & CAM_SCATTER_VALID)
272                                 /* we want to do the s/g setup */
273                                 ccbh->status = CAM_REQ_INVALID;
274                 }
275
276                 /*
277                  * If the command is to a LUN other than 0, fail it.
278                  * This is probably incorrect, but during testing the
279                  * firmware did not seem to respect the LUN field, and thus
280                  * devices appear echoed.
281                  */
282                 if (csio->ccb_h.target_lun != 0)
283                         ccbh->status = CAM_DEV_NOT_THERE;
284
285                 /* if we're happy with the request, queue it for attention */
286                 if (ccbh->status == CAM_REQ_INPROG) {
287
288                         /* save the channel number in the ccb */
289                         csio->ccb_h.sim_priv.entries[0].field= cam_sim_bus(sim);
290
291                         amr_enqueue_ccb(sc, ccb);
292                         amr_startio(sc);
293                         return;
294                 }
295                 break;
296         }
297
298         case XPT_CALC_GEOMETRY:
299         {
300                 cam_calc_geometry(&ccb->ccg, /*extended*/1);
301                 break;
302         }
303
304         /*
305          * Return path stats.  Some of these should probably be amended.
306          */
307         case XPT_PATH_INQ:
308         {
309                 struct ccb_pathinq        *cpi = & ccb->cpi;
310
311                 debug(3, "XPT_PATH_INQ");
312                 cpi->version_num = 1;              /* XXX??? */
313                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
314                 cpi->target_sprt = 0;
315                 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN;
316                 cpi->hba_eng_cnt = 0;
317                 cpi->max_target = AMR_MAX_TARGETS;
318                 cpi->max_lun = 0 /* AMR_MAX_LUNS*/;
319                 cpi->initiator_id = 7;            /* XXX variable? */
320                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
321                 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
322                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
323                 cpi->unit_number = cam_sim_unit(sim);
324                 cpi->bus_id = cam_sim_bus(sim);
325                 cpi->base_transfer_speed = 132 * 1024;  /* XXX */
326                 cpi->transport = XPORT_SPI;
327                 cpi->transport_version = 2;
328                 cpi->protocol = PROTO_SCSI;
329                 cpi->protocol_version = SCSI_REV_2;
330                 cpi->ccb_h.status = CAM_REQ_CMP;
331
332                 break;
333         }
334
335         case XPT_RESET_BUS:
336         {
337                 struct ccb_pathinq      *cpi = & ccb->cpi;
338
339                 debug(1, "XPT_RESET_BUS");
340                 cpi->ccb_h.status = CAM_REQ_CMP;
341                 break;
342         }
343
344         case XPT_RESET_DEV:
345         {
346                 debug(1, "XPT_RESET_DEV");
347                 ccb->ccb_h.status = CAM_REQ_CMP;
348                 break;
349         }
350
351         case XPT_GET_TRAN_SETTINGS:
352         {
353                 struct ccb_trans_settings       *cts = &(ccb->cts);
354
355                 debug(3, "XPT_GET_TRAN_SETTINGS");
356
357                 struct ccb_trans_settings_scsi *scsi;
358                 struct ccb_trans_settings_spi *spi;
359
360                 scsi = &cts->proto_specific.scsi;
361                 spi = &cts->xport_specific.spi;
362
363                 cts->protocol = PROTO_SCSI;
364                 cts->protocol_version = SCSI_REV_2;
365                 cts->transport = XPORT_SPI;
366                 cts->transport_version = 2;
367
368                 if (cts->type == CTS_TYPE_USER_SETTINGS) {
369                         ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
370                         break;
371                 }
372
373                 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
374                 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT;
375                 spi->sync_period = 6;   /* 40MHz how wide is this bus? */
376                 spi->sync_offset = 31;  /* How to extract this from board? */
377
378                 spi->valid = CTS_SPI_VALID_SYNC_RATE
379                         | CTS_SPI_VALID_SYNC_OFFSET
380                         | CTS_SPI_VALID_BUS_WIDTH
381                         | CTS_SPI_VALID_DISC;
382                 scsi->valid = CTS_SCSI_VALID_TQ;
383                 ccb->ccb_h.status = CAM_REQ_CMP;
384                 break;
385         }
386
387         case XPT_SET_TRAN_SETTINGS:
388                 debug(3, "XPT_SET_TRAN_SETTINGS");
389                 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
390                 break;
391
392
393         /*
394          * Reject anything else as unsupported.
395          */
396         default:
397                 /* we can't do this */
398                 ccb->ccb_h.status = CAM_REQ_INVALID;
399                 break;
400         }
401
402         KKASSERT(lockstatus(&sc->amr_list_lock, curthread) != 0);
403         xpt_done(ccb);
404 }
405
406 /***********************************************************************
407  * Convert a CAM CCB off the top of the CCB queue to a passthrough SCSI
408  * command.
409  */
410 static int
411 amr_cam_command(struct amr_softc *sc, struct amr_command **acp)
412 {
413         struct amr_command              *ac;
414         struct amr_passthrough          *ap;
415         struct amr_ext_passthrough      *aep;
416         struct ccb_scsiio               *csio;
417         int                             bus, target, error;
418
419         error = 0;
420         ac = NULL;
421         ap = NULL;
422         aep = NULL;
423
424         /* check to see if there is a ccb for us to work with */
425         if ((csio = (struct ccb_scsiio *)amr_dequeue_ccb(sc)) == NULL)
426         goto out;
427
428         /* get bus/target, XXX validate against protected devices? */
429         bus = csio->ccb_h.sim_priv.entries[0].field;
430         target = csio->ccb_h.target_id;
431
432         /*
433          * Build a passthrough command.
434          */
435
436         /* construct command */
437         if ((ac = amr_alloccmd(sc)) == NULL) {
438                 error = ENOMEM;
439                 goto out;
440         }
441
442         /* construct passthrough */
443         if (sc->support_ext_cdb ) {
444                 aep = &ac->ac_ccb->ccb_epthru;
445                 aep->ap_timeout = 2;
446                 aep->ap_ars = 1;
447                 aep->ap_request_sense_length = 14;
448                 aep->ap_islogical = 0;
449                 aep->ap_channel = bus;
450                 aep->ap_scsi_id = target;
451                 aep->ap_logical_drive_no = csio->ccb_h.target_lun;
452                 aep->ap_cdb_length = csio->cdb_len;
453                 aep->ap_data_transfer_length = csio->dxfer_len;
454                 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
455                         bcopy(csio->cdb_io.cdb_ptr, aep->ap_cdb, csio->cdb_len);
456                 } else {
457                         bcopy(csio->cdb_io.cdb_bytes, aep->ap_cdb,
458                             csio->cdb_len);
459                 }
460                 /*
461                  * we leave the data s/g list and s/g count to the map routine
462                  * later
463                  */
464
465                 debug(2, " COMMAND %x/%d+%d to %d:%d:%d", aep->ap_cdb[0],
466                     aep->ap_cdb_length, csio->dxfer_len, aep->ap_channel,
467                     aep->ap_scsi_id, aep->ap_logical_drive_no);
468
469         } else {
470                 ap = &ac->ac_ccb->ccb_pthru;
471                 ap->ap_timeout = 0;
472                 ap->ap_ars = 1;
473                 ap->ap_request_sense_length = 14;
474                 ap->ap_islogical = 0;
475                 ap->ap_channel = bus;
476                 ap->ap_scsi_id = target;
477                 ap->ap_logical_drive_no = csio->ccb_h.target_lun;
478                 ap->ap_cdb_length = csio->cdb_len;
479                 ap->ap_data_transfer_length = csio->dxfer_len;
480                 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
481                         bcopy(csio->cdb_io.cdb_ptr, ap->ap_cdb, csio->cdb_len);
482                 } else {
483                         bcopy(csio->cdb_io.cdb_bytes, ap->ap_cdb,
484                             csio->cdb_len);
485                 }
486                 /*
487                  * we leave the data s/g list and s/g count to the map routine
488                  * later
489                  */
490
491                 debug(2, " COMMAND %x/%d+%d to %d:%d:%d", ap->ap_cdb[0],
492                     ap->ap_cdb_length, csio->dxfer_len, ap->ap_channel,
493                     ap->ap_scsi_id, ap->ap_logical_drive_no);
494         }
495
496         ac->ac_flags |= AMR_CMD_CCB;
497
498         ac->ac_data = csio->data_ptr;
499         ac->ac_length = csio->dxfer_len;
500         if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
501                 ac->ac_flags |= AMR_CMD_DATAIN;
502         if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
503                 ac->ac_flags |= AMR_CMD_DATAOUT;
504
505         ac->ac_private = csio;
506         ac->ac_complete = amr_cam_complete;
507         if ( sc->support_ext_cdb ) {
508                 ac->ac_mailbox.mb_command = AMR_CMD_EXTPASS;
509         } else {
510                 ac->ac_mailbox.mb_command = AMR_CMD_PASS;
511         }
512
513 out:
514         if (error != 0) {
515                 if (ac != NULL)
516                         amr_releasecmd(ac);
517                 if (csio != NULL)
518                         /* put it back and try again later */
519                         amr_requeue_ccb(sc, (union ccb *)csio);
520         }
521         *acp = ac;
522         return(error);
523 }
524
525 /***********************************************************************
526  * Check for interrupt status
527  */
528 static void
529 amr_cam_poll(struct cam_sim *sim)
530 {
531
532         amr_done(cam_sim_softc(sim));
533 }
534
535  /**********************************************************************
536  * Handle completion of a command submitted via CAM.
537  */
538 static void
539 amr_cam_complete(struct amr_command *ac)
540 {
541         struct amr_passthrough          *ap;
542         struct amr_ext_passthrough      *aep;
543         struct ccb_scsiio               *csio;
544         struct scsi_inquiry_data        *inq;
545         int                             scsi_status, cdb0;
546
547         ap = &ac->ac_ccb->ccb_pthru;
548         aep = &ac->ac_ccb->ccb_epthru;
549         csio = (struct ccb_scsiio *)ac->ac_private;
550         inq = (struct scsi_inquiry_data *)csio->data_ptr;
551
552         if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
553                 scsi_status = aep->ap_scsi_status;
554         else
555                 scsi_status = ap->ap_scsi_status;
556         debug(1, "status 0x%x  AP scsi_status 0x%x", ac->ac_status,
557             scsi_status);
558
559         /* Make sure the status is sane */
560         if ((ac->ac_status != AMR_STATUS_SUCCESS) && (scsi_status == 0)) {
561                 csio->ccb_h.status = CAM_REQ_CMP_ERR;
562                 goto out;
563         }
564
565         /*
566          * Hide disks from CAM so that they're not picked up and treated as
567          * 'normal' disks.
568          *
569          * If the configuration provides a mechanism to mark a disk a "not
570          * managed", we could add handling for that to allow disks to be
571          * selectively visible.
572          */
573
574         /* handle passthrough SCSI status */
575         switch(scsi_status) {
576         case 0: /* completed OK */
577                 if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
578                         cdb0 = aep->ap_cdb[0];
579                 else
580                         cdb0 = ap->ap_cdb[0];
581                 if ((cdb0 == INQUIRY) && (SID_TYPE(inq) == T_DIRECT))
582                         inq->device = (inq->device & 0xe0) | T_NODEVICE;
583                 csio->ccb_h.status = CAM_REQ_CMP;
584                 break;
585
586         case 0x02:
587                 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
588                 csio->scsi_status = SCSI_STATUS_CHECK_COND;
589                 if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
590                         bcopy(aep->ap_request_sense_area, &csio->sense_data,
591                             AMR_MAX_REQ_SENSE_LEN);
592                 else
593                         bcopy(ap->ap_request_sense_area, &csio->sense_data,
594                             AMR_MAX_REQ_SENSE_LEN);
595                 csio->sense_len = AMR_MAX_REQ_SENSE_LEN;
596                 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
597                 break;
598
599         case 0x08:
600                 csio->ccb_h.status = CAM_SCSI_BUSY;
601                 break;
602
603         case 0xf0:
604         case 0xf4:
605         default:
606                 /*
607                  * Non-zero LUNs are already filtered, so there's no need
608                  * to return CAM_DEV_NOT_THERE.
609                  */
610                 csio->ccb_h.status = CAM_SEL_TIMEOUT;
611                 break;
612         }
613
614 out:
615         if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)
616                 debug(2, "%*D\n", imin(csio->dxfer_len, 16), csio->data_ptr,
617                     " ");
618
619         lockmgr(&ac->ac_sc->amr_list_lock, LK_EXCLUSIVE);
620         xpt_done((union ccb *)csio);
621         amr_releasecmd(ac);
622         lockmgr(&ac->ac_sc->amr_list_lock, LK_RELEASE);
623 }