sys/dev/amr/amr_cam.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2000 Michael Smith
   5  * Copyright (c) 2000 BSDi
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *      notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *      notice, this list of conditions and the following disclaimer in the
  15  *      documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29 /*-
  30  * Copyright (c) 2002 Eric Moore
  31  * Copyright (c) 2002 LSI Logic Corporation
  32  * All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *      notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *      notice, this list of conditions and the following disclaimer in the
  41  *      documentation and/or other materials provided with the distribution.
  42  * 3. The party using or redistributing the source code and binary forms
  43  *      agrees to the disclaimer below and the terms and conditions set forth
  44  *      herein.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  */
  58
  59 #include <sys/cdefs.h>
  60 __FBSDID("$FreeBSD$");
  61
  62 #include <sys/param.h>
  63 #include <sys/systm.h>
  64 #include <sys/malloc.h>
  65 #include <sys/kernel.h>
  66 #include <sys/module.h>
  67
  68 #include <sys/bio.h>
  69 #include <sys/bus.h>
  70 #include <sys/conf.h>
  71 #include <sys/stat.h>
  72
  73 #include <cam/cam.h>
  74 #include <cam/cam_ccb.h>
  75 #include <cam/cam_sim.h>
  76 #include <cam/cam_xpt.h>
  77 #include <cam/cam_xpt_sim.h>
  78 #include <cam/cam_debug.h>
  79 #include <cam/scsi/scsi_all.h>
  80 #include <cam/scsi/scsi_message.h>
  81
  82 #include <machine/resource.h>
  83 #include <machine/bus.h>
  84
  85 #include <dev/amr/amrreg.h>
  86 #include <dev/amr/amrvar.h>
  87
  88 static int      amr_cam_probe(device_t dev);
  89 static int      amr_cam_attach(device_t dev);
  90 static int      amr_cam_detach(device_t dev);
  91 static void     amr_cam_action(struct cam_sim *sim, union ccb *ccb);
  92 static void     amr_cam_poll(struct cam_sim *sim);
  93 static void     amr_cam_complete(struct amr_command *ac);
  94 static int      amr_cam_command(struct amr_softc *sc, struct amr_command **acp);
  95
  96 static devclass_t       amr_pass_devclass;
  97
  98 static device_method_t  amr_pass_methods[] = {
  99         DEVMETHOD(device_probe,         amr_cam_probe),
 100         DEVMETHOD(device_attach,        amr_cam_attach),
 101         DEVMETHOD(device_detach,        amr_cam_detach),
 102         { 0, 0 }
 103 };
 104
 105 static driver_t amr_pass_driver = {
 106         "amrp",
 107         amr_pass_methods,
 108         0
 109 };
 110
 111 DRIVER_MODULE(amrp, amr, amr_pass_driver, amr_pass_devclass, 0, 0);
 112 MODULE_DEPEND(amrp, cam, 1, 1, 1);
 113
 114 static MALLOC_DEFINE(M_AMRCAM, "amrcam", "AMR CAM memory");
 115
 116 /***********************************************************************
 117  * Enqueue/dequeue functions
 118  */
 119 static __inline void
 120 amr_enqueue_ccb(struct amr_softc *sc, union ccb *ccb)
 121 {
 122
 123         TAILQ_INSERT_TAIL(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
 124 }
 125
 126 static __inline void
 127 amr_requeue_ccb(struct amr_softc *sc, union ccb *ccb)
 128 {
 129
 130         TAILQ_INSERT_HEAD(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
 131 }
 132
 133 static __inline union ccb *
 134 amr_dequeue_ccb(struct amr_softc *sc)
 135 {
 136         union ccb       *ccb;
 137
 138         if ((ccb = (union ccb *)TAILQ_FIRST(&sc->amr_cam_ccbq)) != NULL)
 139                 TAILQ_REMOVE(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
 140         return(ccb);
 141 }
 142
 143 static int
 144 amr_cam_probe(device_t dev)
 145 {
 146         return (0);
 147 }
 148
 149 /********************************************************************************
 150  * Attach our 'real' SCSI channels to CAM
 151  */
 152 static int
 153 amr_cam_attach(device_t dev)
 154 {
 155         struct amr_softc *sc;
 156         struct cam_devq *devq;
 157         int chn, error;
 158
 159         sc = device_get_softc(dev);
 160
 161         /* initialise the ccb queue */
 162         TAILQ_INIT(&sc->amr_cam_ccbq);
 163
 164         /*
 165          * Allocate a devq for all our channels combined.  This should
 166          * allow for the maximum number of SCSI commands we will accept
 167          * at one time. Save the pointer in the softc so we can find it later
 168          * during detach.
 169          */
 170         if ((devq = cam_simq_alloc(AMR_MAX_SCSI_CMDS)) == NULL)
 171                 return(ENOMEM);
 172         sc->amr_cam_devq = devq;
 173
 174         /*
 175          * Iterate over our channels, registering them with CAM
 176          */
 177         for (chn = 0; chn < sc->amr_maxchan; chn++) {
 178                 /* allocate a sim */
 179                 if ((sc->amr_cam_sim[chn] = cam_sim_alloc(amr_cam_action,
 180                     amr_cam_poll, "amr", sc, device_get_unit(sc->amr_dev),
 181                     &sc->amr_list_lock, 1, AMR_MAX_SCSI_CMDS, devq)) == NULL) {
 182                         cam_simq_free(devq);
 183                         device_printf(sc->amr_dev, "CAM SIM attach failed\n");
 184                         return(ENOMEM);
 185                 }
 186
 187                 /* register the bus ID so we can get it later */
 188                 mtx_lock(&sc->amr_list_lock);
 189                 error = xpt_bus_register(sc->amr_cam_sim[chn], sc->amr_dev,chn);
 190                 mtx_unlock(&sc->amr_list_lock);
 191                 if (error) {
 192                         device_printf(sc->amr_dev,
 193                             "CAM XPT bus registration failed\n");
 194                         return(ENXIO);
 195                 }
 196         }
 197         /*
 198          * XXX we should scan the config and work out which devices are
 199          * actually protected.
 200          */
 201         sc->amr_cam_command = amr_cam_command;
 202         return(0);
 203 }
 204
 205 /********************************************************************************
 206  * Disconnect ourselves from CAM
 207  */
 208 static int
 209 amr_cam_detach(device_t dev)
 210 {
 211         struct amr_softc *sc;
 212         int             chn;
 213
 214         sc = device_get_softc(dev);
 215         mtx_lock(&sc->amr_list_lock);
 216         for (chn = 0; chn < sc->amr_maxchan; chn++) {
 217                 /*
 218                  * If a sim was allocated for this channel, free it
 219                  */
 220                 if (sc->amr_cam_sim[chn] != NULL) {
 221                         xpt_bus_deregister(cam_sim_path(sc->amr_cam_sim[chn]));
 222                         cam_sim_free(sc->amr_cam_sim[chn], FALSE);
 223                 }
 224         }
 225         mtx_unlock(&sc->amr_list_lock);
 226
 227         /* Now free the devq */
 228         if (sc->amr_cam_devq != NULL)
 229                 cam_simq_free(sc->amr_cam_devq);
 230
 231         return (0);
 232 }
 233
 234 /***********************************************************************
 235  ***********************************************************************
 236                         CAM passthrough interface
 237  ***********************************************************************
 238  ***********************************************************************/
 239
 240 /***********************************************************************
 241  * Handle a request for action from CAM
 242  */
 243 static void
 244 amr_cam_action(struct cam_sim *sim, union ccb *ccb)
 245 {
 246         struct amr_softc        *sc = cam_sim_softc(sim);
 247
 248         switch(ccb->ccb_h.func_code) {
 249         /*
 250          * Perform SCSI I/O to a physical device.
 251          */
 252         case XPT_SCSI_IO:
 253         {
 254                 struct ccb_hdr          *ccbh = &ccb->ccb_h;
 255                 struct ccb_scsiio       *csio = &ccb->csio;
 256
 257                 /* Validate the CCB */
 258                 ccbh->status = CAM_REQ_INPROG;
 259
 260                 /* check the CDB length */
 261                 if (csio->cdb_len > AMR_MAX_EXTCDB_LEN)
 262                         ccbh->status = CAM_REQ_INVALID;
 263
 264                 if ((csio->cdb_len > AMR_MAX_CDB_LEN) &&
 265                     (sc->support_ext_cdb == 0))
 266                         ccbh->status = CAM_REQ_INVALID;
 267
 268                 /* check that the CDB pointer is not to a physical address */
 269                 if ((ccbh->flags & CAM_CDB_POINTER) &&
 270                     (ccbh->flags & CAM_CDB_PHYS))
 271                         ccbh->status = CAM_REQ_INVALID;
 272                 /*
 273                  * if there is data transfer, it must be to/from a virtual
 274                  * address
 275                  */
 276                 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 277                         if ((ccbh->flags & CAM_DATA_MASK) != CAM_DATA_VADDR)
 278                                 /* we can't map it */
 279                                 ccbh->status = CAM_REQ_INVALID;
 280                 }
 281
 282                 /*
 283                  * If the command is to a LUN other than 0, fail it.
 284                  * This is probably incorrect, but during testing the
 285                  * firmware did not seem to respect the LUN field, and thus
 286                  * devices appear echoed.
 287                  */
 288                 if (csio->ccb_h.target_lun != 0)
 289                         ccbh->status = CAM_DEV_NOT_THERE;
 290
 291                 /* if we're happy with the request, queue it for attention */
 292                 if (ccbh->status == CAM_REQ_INPROG) {
 293                         /* save the channel number in the ccb */
 294                         csio->ccb_h.sim_priv.entries[0].field= cam_sim_bus(sim);
 295
 296                         amr_enqueue_ccb(sc, ccb);
 297                         amr_startio(sc);
 298                         return;
 299                 }
 300                 break;
 301         }
 302
 303         case XPT_CALC_GEOMETRY:
 304         {
 305                 cam_calc_geometry(&ccb->ccg, /*extended*/1);
 306                 break;
 307         }
 308
 309         /*
 310          * Return path stats.  Some of these should probably be amended.
 311          */
 312         case XPT_PATH_INQ:
 313         {
 314                 struct ccb_pathinq        *cpi = & ccb->cpi;
 315
 316                 debug(3, "XPT_PATH_INQ");
 317                 cpi->version_num = 1;              /* XXX??? */
 318                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
 319                 cpi->target_sprt = 0;
 320                 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN;
 321                 cpi->hba_eng_cnt = 0;
 322                 cpi->max_target = AMR_MAX_TARGETS;
 323                 cpi->max_lun = 0 /* AMR_MAX_LUNS*/;
 324                 cpi->initiator_id = 7;            /* XXX variable? */
 325                 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 326                 strlcpy(cpi->hba_vid, "LSI", HBA_IDLEN);
 327                 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 328                 cpi->unit_number = cam_sim_unit(sim);
 329                 cpi->bus_id = cam_sim_bus(sim);
 330                 cpi->base_transfer_speed = 132 * 1024;  /* XXX */
 331                 cpi->transport = XPORT_SPI;
 332                 cpi->transport_version = 2;
 333                 cpi->protocol = PROTO_SCSI;
 334                 cpi->protocol_version = SCSI_REV_2;
 335                 cpi->ccb_h.status = CAM_REQ_CMP;
 336
 337                 break;
 338         }
 339
 340         case XPT_RESET_BUS:
 341         {
 342                 struct ccb_pathinq      *cpi = & ccb->cpi;
 343
 344                 debug(1, "XPT_RESET_BUS");
 345                 cpi->ccb_h.status = CAM_REQ_CMP;
 346                 break;
 347         }
 348
 349         case XPT_RESET_DEV:
 350         {
 351                 debug(1, "XPT_RESET_DEV");
 352                 ccb->ccb_h.status = CAM_REQ_CMP;
 353                 break;
 354         }
 355
 356         case XPT_GET_TRAN_SETTINGS:
 357         {
 358                 struct ccb_trans_settings       *cts = &(ccb->cts);
 359
 360                 debug(3, "XPT_GET_TRAN_SETTINGS");
 361
 362                 struct ccb_trans_settings_scsi *scsi;
 363                 struct ccb_trans_settings_spi *spi;
 364
 365                 scsi = &cts->proto_specific.scsi;
 366                 spi = &cts->xport_specific.spi;
 367
 368                 cts->protocol = PROTO_SCSI;
 369                 cts->protocol_version = SCSI_REV_2;
 370                 cts->transport = XPORT_SPI;
 371                 cts->transport_version = 2;
 372
 373                 if (cts->type == CTS_TYPE_USER_SETTINGS) {
 374                         ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
 375                         break;
 376                 }
 377
 378                 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
 379                 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT;
 380                 spi->sync_period = 6;   /* 40MHz how wide is this bus? */
 381                 spi->sync_offset = 31;  /* How to extract this from board? */
 382
 383                 spi->valid = CTS_SPI_VALID_SYNC_RATE
 384                         | CTS_SPI_VALID_SYNC_OFFSET
 385                         | CTS_SPI_VALID_BUS_WIDTH
 386                         | CTS_SPI_VALID_DISC;
 387                 scsi->valid = CTS_SCSI_VALID_TQ;
 388                 ccb->ccb_h.status = CAM_REQ_CMP;
 389                 break;
 390         }
 391
 392         case XPT_SET_TRAN_SETTINGS:
 393                 debug(3, "XPT_SET_TRAN_SETTINGS");
 394                 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
 395                 break;
 396
 397         /*
 398          * Reject anything else as unsupported.
 399          */
 400         default:
 401                 /* we can't do this */
 402                 ccb->ccb_h.status = CAM_REQ_INVALID;
 403                 break;
 404         }
 405
 406         mtx_assert(&sc->amr_list_lock, MA_OWNED);
 407         xpt_done(ccb);
 408 }
 409
 410 /***********************************************************************
 411  * Convert a CAM CCB off the top of the CCB queue to a passthrough SCSI
 412  * command.
 413  */
 414 static int
 415 amr_cam_command(struct amr_softc *sc, struct amr_command **acp)
 416 {
 417         struct amr_command              *ac;
 418         struct amr_passthrough          *ap;
 419         struct amr_ext_passthrough      *aep;
 420         struct ccb_scsiio               *csio;
 421         int                             bus, target, error;
 422
 423         error = 0;
 424         ac = NULL;
 425         ap = NULL;
 426         aep = NULL;
 427
 428         /* check to see if there is a ccb for us to work with */
 429         if ((csio = (struct ccb_scsiio *)amr_dequeue_ccb(sc)) == NULL)
 430         goto out;
 431
 432         /* get bus/target, XXX validate against protected devices? */
 433         bus = csio->ccb_h.sim_priv.entries[0].field;
 434         target = csio->ccb_h.target_id;
 435
 436         /*
 437          * Build a passthrough command.
 438          */
 439
 440         /* construct command */
 441         if ((ac = amr_alloccmd(sc)) == NULL) {
 442                 error = ENOMEM;
 443                 goto out;
 444         }
 445
 446         /* construct passthrough */
 447         if (sc->support_ext_cdb ) {
 448                 aep = &ac->ac_ccb->ccb_epthru;
 449                 aep->ap_timeout = 2;
 450                 aep->ap_ars = 1;
 451                 aep->ap_request_sense_length = 14;
 452                 aep->ap_islogical = 0;
 453                 aep->ap_channel = bus;
 454                 aep->ap_scsi_id = target;
 455                 aep->ap_logical_drive_no = csio->ccb_h.target_lun;
 456                 aep->ap_cdb_length = csio->cdb_len;
 457                 aep->ap_data_transfer_length = csio->dxfer_len;
 458                 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
 459                         bcopy(csio->cdb_io.cdb_ptr, aep->ap_cdb, csio->cdb_len);
 460                 } else {
 461                         bcopy(csio->cdb_io.cdb_bytes, aep->ap_cdb,
 462                             csio->cdb_len);
 463                 }
 464                 /*
 465                  * we leave the data s/g list and s/g count to the map routine
 466                  * later
 467                  */
 468
 469                 debug(2, " COMMAND %x/%d+%d to %d:%d:%d", aep->ap_cdb[0],
 470                     aep->ap_cdb_length, csio->dxfer_len, aep->ap_channel,
 471                     aep->ap_scsi_id, aep->ap_logical_drive_no);
 472
 473         } else {
 474                 ap = &ac->ac_ccb->ccb_pthru;
 475                 ap->ap_timeout = 0;
 476                 ap->ap_ars = 1;
 477                 ap->ap_request_sense_length = 14;
 478                 ap->ap_islogical = 0;
 479                 ap->ap_channel = bus;
 480                 ap->ap_scsi_id = target;
 481                 ap->ap_logical_drive_no = csio->ccb_h.target_lun;
 482                 ap->ap_cdb_length = csio->cdb_len;
 483                 ap->ap_data_transfer_length = csio->dxfer_len;
 484                 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
 485                         bcopy(csio->cdb_io.cdb_ptr, ap->ap_cdb, csio->cdb_len);
 486                 } else {
 487                         bcopy(csio->cdb_io.cdb_bytes, ap->ap_cdb,
 488                             csio->cdb_len);
 489                 }
 490                 /*
 491                  * we leave the data s/g list and s/g count to the map routine
 492                  * later
 493                  */
 494
 495                 debug(2, " COMMAND %x/%d+%d to %d:%d:%d", ap->ap_cdb[0],
 496                     ap->ap_cdb_length, csio->dxfer_len, ap->ap_channel,
 497                     ap->ap_scsi_id, ap->ap_logical_drive_no);
 498         }
 499
 500         ac->ac_flags |= AMR_CMD_CCB;
 501
 502         ac->ac_data = csio->data_ptr;
 503         ac->ac_length = csio->dxfer_len;
 504         if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 505                 ac->ac_flags |= AMR_CMD_DATAIN;
 506         if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 507                 ac->ac_flags |= AMR_CMD_DATAOUT;
 508
 509         ac->ac_private = csio;
 510         ac->ac_complete = amr_cam_complete;
 511         if ( sc->support_ext_cdb ) {
 512                 ac->ac_mailbox.mb_command = AMR_CMD_EXTPASS;
 513         } else {
 514                 ac->ac_mailbox.mb_command = AMR_CMD_PASS;
 515         }
 516
 517 out:
 518         if (error != 0) {
 519                 if (ac != NULL)
 520                         amr_releasecmd(ac);
 521                 if (csio != NULL)
 522                         /* put it back and try again later */
 523                         amr_requeue_ccb(sc, (union ccb *)csio);
 524         }
 525         *acp = ac;
 526         return(error);
 527 }
 528
 529 /***********************************************************************
 530  * Check for interrupt status
 531  */
 532 static void
 533 amr_cam_poll(struct cam_sim *sim)
 534 {
 535
 536         amr_done(cam_sim_softc(sim));
 537 }
 538
 539  /**********************************************************************
 540  * Handle completion of a command submitted via CAM.
 541  */
 542 static void
 543 amr_cam_complete(struct amr_command *ac)
 544 {
 545         struct amr_passthrough          *ap;
 546         struct amr_ext_passthrough      *aep;
 547         struct ccb_scsiio               *csio;
 548         struct scsi_inquiry_data        *inq;
 549         int                             scsi_status, cdb0;
 550
 551         ap = &ac->ac_ccb->ccb_pthru;
 552         aep = &ac->ac_ccb->ccb_epthru;
 553         csio = (struct ccb_scsiio *)ac->ac_private;
 554         inq = (struct scsi_inquiry_data *)csio->data_ptr;
 555
 556         if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
 557                 scsi_status = aep->ap_scsi_status;
 558         else
 559                 scsi_status = ap->ap_scsi_status;
 560         debug(1, "status 0x%x  AP scsi_status 0x%x", ac->ac_status,
 561             scsi_status);
 562
 563         /* Make sure the status is sane */
 564         if ((ac->ac_status != AMR_STATUS_SUCCESS) && (scsi_status == 0)) {
 565                 csio->ccb_h.status = CAM_REQ_CMP_ERR;
 566                 goto out;
 567         }
 568
 569         /*
 570          * Hide disks from CAM so that they're not picked up and treated as
 571          * 'normal' disks.
 572          *
 573          * If the configuration provides a mechanism to mark a disk a "not
 574          * managed", we could add handling for that to allow disks to be
 575          * selectively visible.
 576          */
 577
 578         /* handle passthrough SCSI status */
 579         switch(scsi_status) {
 580         case 0: /* completed OK */
 581                 if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
 582                         cdb0 = aep->ap_cdb[0];
 583                 else
 584                         cdb0 = ap->ap_cdb[0];
 585                 if ((cdb0 == INQUIRY) && (SID_TYPE(inq) == T_DIRECT))
 586                         inq->device = (inq->device & 0xe0) | T_NODEVICE;
 587                 csio->ccb_h.status = CAM_REQ_CMP;
 588                 break;
 589
 590         case 0x02:
 591                 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
 592                 csio->scsi_status = SCSI_STATUS_CHECK_COND;
 593                 if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
 594                         bcopy(aep->ap_request_sense_area, &csio->sense_data,
 595                             AMR_MAX_REQ_SENSE_LEN);
 596                 else
 597                         bcopy(ap->ap_request_sense_area, &csio->sense_data,
 598                             AMR_MAX_REQ_SENSE_LEN);
 599                 csio->sense_len = AMR_MAX_REQ_SENSE_LEN;
 600                 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
 601                 break;
 602
 603         case 0x08:
 604                 csio->ccb_h.status = CAM_SCSI_BUSY;
 605                 break;
 606
 607         case 0xf0:
 608         case 0xf4:
 609         default:
 610                 /*
 611                  * Non-zero LUNs are already filtered, so there's no need
 612                  * to return CAM_DEV_NOT_THERE.
 613                  */
 614                 csio->ccb_h.status = CAM_SEL_TIMEOUT;
 615                 break;
 616         }
 617
 618 out:
 619         if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)
 620                 debug(2, "%*D\n", imin(csio->dxfer_len, 16), csio->data_ptr,
 621                     " ");
 622
 623         mtx_lock(&ac->ac_sc->amr_list_lock);
 624         xpt_done((union ccb *)csio);
 625         amr_releasecmd(ac);
 626         mtx_unlock(&ac->ac_sc->amr_list_lock);
 627 }