sys/dev/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
  57 #include <sys/cdefs.h>
  58 __FBSDID("$FreeBSD$");
  59
  60 #include <sys/param.h>
  61 #include <sys/systm.h>
  62 #include <sys/malloc.h>
  63 #include <sys/kernel.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 <cam/cam.h>
  71 #include <cam/cam_ccb.h>
  72 #include <cam/cam_sim.h>
  73 #include <cam/cam_xpt.h>
  74 #include <cam/cam_xpt_sim.h>
  75 #include <cam/cam_debug.h>
  76 #include <cam/scsi/scsi_all.h>
  77 #include <cam/scsi/scsi_message.h>
  78
  79 #include <machine/resource.h>
  80 #include <machine/bus.h>
  81
  82 #include <dev/amr/amrreg.h>
  83 #include <dev/amr/amrvar.h>
  84
  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
  89 MALLOC_DEFINE(M_AMRCAM, "amrcam", "AMR CAM memory");
  90
  91 /***********************************************************************
  92  * Enqueue/dequeue functions
  93  */
  94 static __inline void
  95 amr_enqueue_ccb(struct amr_softc *sc, union ccb *ccb)
  96 {
  97
  98         TAILQ_INSERT_TAIL(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
  99 }
 100
 101 static __inline void
 102 amr_requeue_ccb(struct amr_softc *sc, union ccb *ccb)
 103 {
 104
 105         TAILQ_INSERT_HEAD(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
 106 }
 107
 108 static __inline union ccb *
 109 amr_dequeue_ccb(struct amr_softc *sc)
 110 {
 111         union ccb       *ccb;
 112
 113         if ((ccb = (union ccb *)TAILQ_FIRST(&sc->amr_cam_ccbq)) != NULL)
 114                 TAILQ_REMOVE(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
 115         return(ccb);
 116 }
 117
 118 /********************************************************************************
 119  * Attach our 'real' SCSI channels to CAM
 120  */
 121 int
 122 amr_cam_attach(struct amr_softc *sc)
 123 {
 124         struct cam_devq *devq;
 125         int                     chn, error;
 126
 127         /* initialise the ccb queue */
 128         TAILQ_INIT(&sc->amr_cam_ccbq);
 129
 130         /*
 131          * Allocate a devq for all our channels combined.  This should
 132          * allow for the maximum number of SCSI commands we will accept
 133          * at one time. Save the pointer in the softc so we can find it later
 134          * during detach.
 135          */
 136         if ((devq = cam_simq_alloc(AMR_MAX_SCSI_CMDS)) == NULL)
 137         return(ENOMEM);
 138         sc->amr_cam_devq = devq;
 139
 140         /*
 141          * Iterate over our channels, registering them with CAM
 142          */
 143         for (chn = 0; chn < sc->amr_maxchan; chn++) {
 144
 145                 /* allocate a sim */
 146                 if ((sc->amr_cam_sim[chn] = cam_sim_alloc(amr_cam_action,
 147                     amr_cam_poll, "amr", sc, device_get_unit(sc->amr_dev),
 148                     &sc->amr_list_lock, 1, AMR_MAX_SCSI_CMDS, devq)) == NULL) {
 149                         cam_simq_free(devq);
 150                         device_printf(sc->amr_dev, "CAM SIM attach failed\n");
 151                         return(ENOMEM);
 152                 }
 153
 154                 /* register the bus ID so we can get it later */
 155                 mtx_lock(&sc->amr_list_lock);
 156                 error = xpt_bus_register(sc->amr_cam_sim[chn], sc->amr_dev,chn);
 157                 mtx_unlock(&sc->amr_list_lock);
 158                 if (error) {
 159                         device_printf(sc->amr_dev,
 160                             "CAM XPT bus registration failed\n");
 161                         return(ENXIO);
 162                 }
 163         }
 164         /*
 165          * XXX we should scan the config and work out which devices are
 166          * actually protected.
 167          */
 168         return(0);
 169 }
 170
 171 /********************************************************************************
 172  * Disconnect ourselves from CAM
 173  */
 174 void
 175 amr_cam_detach(struct amr_softc *sc)
 176 {
 177         int             chn;
 178
 179         mtx_lock(&sc->amr_list_lock);
 180         for (chn = 0; chn < sc->amr_maxchan; chn++) {
 181                 /*
 182                  * If a sim was allocated for this channel, free it
 183                  */
 184                 if (sc->amr_cam_sim[chn] != NULL) {
 185                         xpt_bus_deregister(cam_sim_path(sc->amr_cam_sim[chn]));
 186                         cam_sim_free(sc->amr_cam_sim[chn], FALSE);
 187                 }
 188         }
 189         mtx_unlock(&sc->amr_list_lock);
 190
 191         /* Now free the devq */
 192         if (sc->amr_cam_devq != NULL)
 193                 cam_simq_free(sc->amr_cam_devq);
 194 }
 195
 196 /***********************************************************************
 197  ***********************************************************************
 198                         CAM passthrough interface
 199  ***********************************************************************
 200  ***********************************************************************/
 201
 202 /***********************************************************************
 203  * Handle a request for action from CAM
 204  */
 205 static void
 206 amr_cam_action(struct cam_sim *sim, union ccb *ccb)
 207 {
 208         struct amr_softc        *sc = cam_sim_softc(sim);
 209
 210         switch(ccb->ccb_h.func_code) {
 211
 212         /*
 213          * Perform SCSI I/O to a physical device.
 214          */
 215         case XPT_SCSI_IO:
 216         {
 217                 struct ccb_hdr          *ccbh = &ccb->ccb_h;
 218                 struct ccb_scsiio       *csio = &ccb->csio;
 219
 220                 /* Validate the CCB */
 221                 ccbh->status = CAM_REQ_INPROG;
 222
 223                 /* check the CDB length */
 224                 if (csio->cdb_len > AMR_MAX_EXTCDB_LEN)
 225                         ccbh->status = CAM_REQ_INVALID;
 226
 227                 if ((csio->cdb_len > AMR_MAX_CDB_LEN) &&
 228                     (sc->support_ext_cdb == 0))
 229                         ccbh->status = CAM_REQ_INVALID;
 230
 231                 /* check that the CDB pointer is not to a physical address */
 232                 if ((ccbh->flags & CAM_CDB_POINTER) &&
 233                     (ccbh->flags & CAM_CDB_PHYS))
 234                         ccbh->status = CAM_REQ_INVALID;
 235                 /*
 236                  * if there is data transfer, it must be to/from a virtual
 237                  * address
 238                  */
 239                 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 240                         if (ccbh->flags & CAM_DATA_PHYS)
 241                                 /* we can't map it */
 242                                 ccbh->status = CAM_REQ_INVALID;
 243                         if (ccbh->flags & CAM_SCATTER_VALID)
 244                                 /* we want to do the s/g setup */
 245                                 ccbh->status = CAM_REQ_INVALID;
 246                 }
 247
 248                 /*
 249                  * If the command is to a LUN other than 0, fail it.
 250                  * This is probably incorrect, but during testing the
 251                  * firmware did not seem to respect the LUN field, and thus
 252                  * devices appear echoed.
 253                  */
 254                 if (csio->ccb_h.target_lun != 0)
 255                         ccbh->status = CAM_DEV_NOT_THERE;
 256
 257                 /* if we're happy with the request, queue it for attention */
 258                 if (ccbh->status == CAM_REQ_INPROG) {
 259
 260                         /* save the channel number in the ccb */
 261                         csio->ccb_h.sim_priv.entries[0].field= cam_sim_bus(sim);
 262
 263                         amr_enqueue_ccb(sc, ccb);
 264                         amr_startio(sc);
 265                         return;
 266                 }
 267                 break;
 268         }
 269
 270         case XPT_CALC_GEOMETRY:
 271         {
 272                 cam_calc_geometry(&ccb->ccg, /*extended*/1);
 273                 break;
 274         }
 275
 276         /*
 277          * Return path stats.  Some of these should probably be amended.
 278          */
 279         case XPT_PATH_INQ:
 280         {
 281                 struct ccb_pathinq        *cpi = & ccb->cpi;
 282
 283                 debug(3, "XPT_PATH_INQ");
 284                 cpi->version_num = 1;              /* XXX??? */
 285                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
 286                 cpi->target_sprt = 0;
 287                 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN;
 288                 cpi->hba_eng_cnt = 0;
 289                 cpi->max_target = AMR_MAX_TARGETS;
 290                 cpi->max_lun = 0 /* AMR_MAX_LUNS*/;
 291                 cpi->initiator_id = 7;            /* XXX variable? */
 292                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 293                 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
 294                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 295                 cpi->unit_number = cam_sim_unit(sim);
 296                 cpi->bus_id = cam_sim_bus(sim);
 297                 cpi->base_transfer_speed = 132 * 1024;  /* XXX */
 298                 cpi->transport = XPORT_SPI;
 299                 cpi->transport_version = 2;
 300                 cpi->protocol = PROTO_SCSI;
 301                 cpi->protocol_version = SCSI_REV_2;
 302                 cpi->ccb_h.status = CAM_REQ_CMP;
 303
 304                 break;
 305         }
 306
 307         case XPT_RESET_BUS:
 308         {
 309                 struct ccb_pathinq      *cpi = & ccb->cpi;
 310
 311                 debug(1, "XPT_RESET_BUS");
 312                 cpi->ccb_h.status = CAM_REQ_CMP;
 313                 break;
 314         }
 315
 316         case XPT_RESET_DEV:
 317         {
 318                 debug(1, "XPT_RESET_DEV");
 319                 ccb->ccb_h.status = CAM_REQ_CMP;
 320                 break;
 321         }
 322
 323         case XPT_GET_TRAN_SETTINGS:
 324         {
 325                 struct ccb_trans_settings       *cts = &(ccb->cts);
 326
 327                 debug(3, "XPT_GET_TRAN_SETTINGS");
 328
 329                 struct ccb_trans_settings_scsi *scsi;
 330                 struct ccb_trans_settings_spi *spi;
 331
 332                 scsi = &cts->proto_specific.scsi;
 333                 spi = &cts->xport_specific.spi;
 334
 335                 cts->protocol = PROTO_SCSI;
 336                 cts->protocol_version = SCSI_REV_2;
 337                 cts->transport = XPORT_SPI;
 338                 cts->transport_version = 2;
 339
 340                 if (cts->type == CTS_TYPE_USER_SETTINGS) {
 341                         ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
 342                         break;
 343                 }
 344
 345                 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
 346                 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT;
 347                 spi->sync_period = 6;   /* 40MHz how wide is this bus? */
 348                 spi->sync_offset = 31;  /* How to extract this from board? */
 349
 350                 spi->valid = CTS_SPI_VALID_SYNC_RATE
 351                         | CTS_SPI_VALID_SYNC_OFFSET
 352                         | CTS_SPI_VALID_BUS_WIDTH
 353                         | CTS_SPI_VALID_DISC;
 354                 scsi->valid = CTS_SCSI_VALID_TQ;
 355                 ccb->ccb_h.status = CAM_REQ_CMP;
 356                 break;
 357         }
 358
 359         case XPT_SET_TRAN_SETTINGS:
 360                 debug(3, "XPT_SET_TRAN_SETTINGS");
 361                 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
 362                 break;
 363
 364
 365         /*
 366          * Reject anything else as unsupported.
 367          */
 368         default:
 369                 /* we can't do this */
 370                 ccb->ccb_h.status = CAM_REQ_INVALID;
 371                 break;
 372         }
 373
 374         mtx_assert(&sc->amr_list_lock, MA_OWNED);
 375         xpt_done(ccb);
 376 }
 377
 378 /***********************************************************************
 379  * Convert a CAM CCB off the top of the CCB queue to a passthrough SCSI
 380  * command.
 381  */
 382 int
 383 amr_cam_command(struct amr_softc *sc, struct amr_command **acp)
 384 {
 385         struct amr_command              *ac;
 386         struct amr_passthrough          *ap;
 387         struct amr_ext_passthrough      *aep;
 388         struct ccb_scsiio               *csio;
 389         int                             bus, target, error;
 390
 391         error = 0;
 392         ac = NULL;
 393         ap = NULL;
 394         aep = NULL;
 395
 396         /* check to see if there is a ccb for us to work with */
 397         if ((csio = (struct ccb_scsiio *)amr_dequeue_ccb(sc)) == NULL)
 398         goto out;
 399
 400         /* get bus/target, XXX validate against protected devices? */
 401         bus = csio->ccb_h.sim_priv.entries[0].field;
 402         target = csio->ccb_h.target_id;
 403
 404         /*
 405          * Build a passthrough command.
 406          */
 407
 408         /* construct command */
 409         if ((ac = amr_alloccmd(sc)) == NULL) {
 410                 error = ENOMEM;
 411                 goto out;
 412         }
 413
 414         /* construct passthrough */
 415         if (sc->support_ext_cdb ) {
 416                 aep = &ac->ac_ccb->ccb_epthru;
 417                 aep->ap_timeout = 2;
 418                 aep->ap_ars = 1;
 419                 aep->ap_request_sense_length = 14;
 420                 aep->ap_islogical = 0;
 421                 aep->ap_channel = bus;
 422                 aep->ap_scsi_id = target;
 423                 aep->ap_logical_drive_no = csio->ccb_h.target_lun;
 424                 aep->ap_cdb_length = csio->cdb_len;
 425                 aep->ap_data_transfer_length = csio->dxfer_len;
 426                 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
 427                         bcopy(csio->cdb_io.cdb_ptr, aep->ap_cdb, csio->cdb_len);
 428                 } else {
 429                         bcopy(csio->cdb_io.cdb_bytes, aep->ap_cdb,
 430                             csio->cdb_len);
 431                 }
 432                 /*
 433                  * we leave the data s/g list and s/g count to the map routine
 434                  * later
 435                  */
 436
 437                 debug(2, " COMMAND %x/%d+%d to %d:%d:%d", aep->ap_cdb[0],
 438                     aep->ap_cdb_length, csio->dxfer_len, aep->ap_channel,
 439                     aep->ap_scsi_id, aep->ap_logical_drive_no);
 440
 441         } else {
 442                 ap = &ac->ac_ccb->ccb_pthru;
 443                 ap->ap_timeout = 0;
 444                 ap->ap_ars = 1;
 445                 ap->ap_request_sense_length = 14;
 446                 ap->ap_islogical = 0;
 447                 ap->ap_channel = bus;
 448                 ap->ap_scsi_id = target;
 449                 ap->ap_logical_drive_no = csio->ccb_h.target_lun;
 450                 ap->ap_cdb_length = csio->cdb_len;
 451                 ap->ap_data_transfer_length = csio->dxfer_len;
 452                 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
 453                         bcopy(csio->cdb_io.cdb_ptr, ap->ap_cdb, csio->cdb_len);
 454                 } else {
 455                         bcopy(csio->cdb_io.cdb_bytes, ap->ap_cdb,
 456                             csio->cdb_len);
 457                 }
 458                 /*
 459                  * we leave the data s/g list and s/g count to the map routine
 460                  * later
 461                  */
 462
 463                 debug(2, " COMMAND %x/%d+%d to %d:%d:%d", ap->ap_cdb[0],
 464                     ap->ap_cdb_length, csio->dxfer_len, ap->ap_channel,
 465                     ap->ap_scsi_id, ap->ap_logical_drive_no);
 466         }
 467
 468         ac->ac_flags |= AMR_CMD_CCB;
 469
 470         ac->ac_data = csio->data_ptr;
 471         ac->ac_length = csio->dxfer_len;
 472         if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 473                 ac->ac_flags |= AMR_CMD_DATAIN;
 474         if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 475                 ac->ac_flags |= AMR_CMD_DATAOUT;
 476
 477         ac->ac_private = csio;
 478         ac->ac_complete = amr_cam_complete;
 479         if ( sc->support_ext_cdb ) {
 480                 ac->ac_mailbox.mb_command = AMR_CMD_EXTPASS;
 481         } else {
 482                 ac->ac_mailbox.mb_command = AMR_CMD_PASS;
 483         }
 484
 485 out:
 486         if (error != 0) {
 487                 if (ac != NULL)
 488                         amr_releasecmd(ac);
 489                 if (csio != NULL)
 490                         /* put it back and try again later */
 491                         amr_requeue_ccb(sc, (union ccb *)csio);
 492         }
 493         *acp = ac;
 494         return(error);
 495 }
 496
 497 /***********************************************************************
 498  * Check for interrupt status
 499  */
 500 static void
 501 amr_cam_poll(struct cam_sim *sim)
 502 {
 503
 504         amr_done(cam_sim_softc(sim));
 505 }
 506
 507  /**********************************************************************
 508  * Handle completion of a command submitted via CAM.
 509  */
 510 static void
 511 amr_cam_complete(struct amr_command *ac)
 512 {
 513         struct amr_passthrough          *ap;
 514         struct amr_ext_passthrough      *aep;
 515         struct ccb_scsiio               *csio;
 516         struct scsi_inquiry_data        *inq;
 517         int                             scsi_status, cdb0;
 518
 519         ap = &ac->ac_ccb->ccb_pthru;
 520         aep = &ac->ac_ccb->ccb_epthru;
 521         csio = (struct ccb_scsiio *)ac->ac_private;
 522         inq = (struct scsi_inquiry_data *)csio->data_ptr;
 523
 524         if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
 525                 scsi_status = aep->ap_scsi_status;
 526         else
 527                 scsi_status = ap->ap_scsi_status;
 528         debug(1, "status 0x%x  AP scsi_status 0x%x", ac->ac_status,
 529             scsi_status);
 530
 531         /* Make sure the status is sane */
 532         if ((ac->ac_status != AMR_STATUS_SUCCESS) && (scsi_status == 0)) {
 533                 csio->ccb_h.status = CAM_REQ_CMP_ERR;
 534                 goto out;
 535         }
 536
 537         /*
 538          * Hide disks from CAM so that they're not picked up and treated as
 539          * 'normal' disks.
 540          *
 541          * If the configuration provides a mechanism to mark a disk a "not
 542          * managed", we could add handling for that to allow disks to be
 543          * selectively visible.
 544          */
 545
 546         /* handle passthrough SCSI status */
 547         switch(scsi_status) {
 548         case 0: /* completed OK */
 549                 if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
 550                         cdb0 = aep->ap_cdb[0];
 551                 else
 552                         cdb0 = ap->ap_cdb[0];
 553                 if ((cdb0 == INQUIRY) && (SID_TYPE(inq) == T_DIRECT))
 554                         inq->device = (inq->device & 0xe0) | T_NODEVICE;
 555                 csio->ccb_h.status = CAM_REQ_CMP;
 556                 break;
 557
 558         case 0x02:
 559                 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
 560                 csio->scsi_status = SCSI_STATUS_CHECK_COND;
 561                 if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
 562                         bcopy(aep->ap_request_sense_area, &csio->sense_data,
 563                             AMR_MAX_REQ_SENSE_LEN);
 564                 else
 565                         bcopy(ap->ap_request_sense_area, &csio->sense_data,
 566                             AMR_MAX_REQ_SENSE_LEN);
 567                 csio->sense_len = AMR_MAX_REQ_SENSE_LEN;
 568                 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
 569                 break;
 570
 571         case 0x08:
 572                 csio->ccb_h.status = CAM_SCSI_BUSY;
 573                 break;
 574
 575         case 0xf0:
 576         case 0xf4:
 577         default:
 578                 /*
 579                  * Non-zero LUNs are already filtered, so there's no need
 580                  * to return CAM_DEV_NOT_THERE.
 581                  */
 582                 csio->ccb_h.status = CAM_SEL_TIMEOUT;
 583                 break;
 584         }
 585
 586 out:
 587         if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)
 588                 debug(2, "%*D\n", imin(csio->dxfer_len, 16), csio->data_ptr,
 589                     " ");
 590
 591         mtx_lock(&ac->ac_sc->amr_list_lock);
 592         xpt_done((union ccb *)csio);
 593         amr_releasecmd(ac);
 594         mtx_unlock(&ac->ac_sc->amr_list_lock);
 595 }