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  * Copyright (c) 2002 Eric Moore
  28  * Copyright (c) 2002 LSI Logic Corporation
  29  * All rights reserved.
  30  *
  31  * Redistribution and use in source and binary forms, with or without
  32  * modification, are permitted provided that the following conditions
  33  * are met:
  34  * 1. Redistributions of source code must retain the above copyright
  35  *    notice, this list of conditions and the following disclaimer.
  36  * 2. Redistributions in binary form must reproduce the above copyright
  37  *    notice, this list of conditions and the following disclaimer in the
  38  *    documentation and/or other materials provided with the distribution.
  39  * 3. The party using or redistributing the source code and binary forms
  40  *    agrees to the disclaimer below and the terms and conditions set forth
  41  *    herein.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      $FreeBSD: src/sys/dev/amr/amr_cam.c,v 1.1.2.3 2002/11/11 13:19:10 emoore Exp $
  56  *      $DragonFly: src/sys/dev/raid/amr/amr_cam.c,v 1.11 2008/05/18 20:30:23 pavalos Exp $
  57  */
  58
  59 #include <sys/param.h>
  60 #include <sys/systm.h>
  61 #include <sys/malloc.h>
  62 #include <sys/kernel.h>
  63
  64 #include "amr_compat.h"
  65 #include <sys/bus.h>
  66 #include <sys/conf.h>
  67 #include <sys/devicestat.h>
  68 #include <sys/disk.h>
  69 #include <sys/stat.h>
  70
  71 #include <bus/cam/cam.h>
  72 #include <bus/cam/cam_ccb.h>
  73 #include <bus/cam/cam_sim.h>
  74 #include <bus/cam/cam_xpt.h>
  75 #include <bus/cam/cam_xpt_sim.h>
  76 #include <bus/cam/cam_debug.h>
  77 #include <bus/cam/scsi/scsi_all.h>
  78 #include <bus/cam/scsi/scsi_message.h>
  79
  80 #include "amrreg.h"
  81 #include "amrvar.h"
  82
  83 static void             amr_cam_action(struct cam_sim *sim, union ccb *ccb);
  84 static void             amr_cam_poll(struct cam_sim *sim);
  85 static void             amr_cam_complete(struct amr_command *ac);
  86 static void             amr_cam_complete_extcdb(struct amr_command *ac);
  87
  88
  89 /********************************************************************************
  90  * Enqueue/dequeue functions
  91  */
  92 static __inline void
  93 amr_enqueue_ccb(struct amr_softc *sc, union ccb *ccb)
  94 {
  95     crit_enter();
  96     TAILQ_INSERT_TAIL(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
  97     crit_exit();
  98 }
  99
 100 static __inline void
 101 amr_requeue_ccb(struct amr_softc *sc, union ccb *ccb)
 102 {
 103     crit_enter();
 104     TAILQ_INSERT_HEAD(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
 105     crit_exit();
 106 }
 107
 108 static __inline union ccb *
 109 amr_dequeue_ccb(struct amr_softc *sc)
 110 {
 111     union ccb   *ccb;
 112
 113     crit_enter();
 114     if ((ccb = (union ccb *)TAILQ_FIRST(&sc->amr_cam_ccbq)) != NULL)
 115         TAILQ_REMOVE(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
 116     crit_exit();
 117     return(ccb);
 118 }
 119
 120 /********************************************************************************
 121  * Attach our 'real' SCSI channels to CAM
 122  */
 123 int
 124 amr_cam_attach(struct amr_softc *sc)
 125 {
 126     struct cam_devq     *devq;
 127     int                 chn;
 128
 129     /* initialise the ccb queue */
 130     TAILQ_INIT(&sc->amr_cam_ccbq);
 131
 132     /*
 133      * Allocate a devq for all our channels combined.  This should
 134      * allow for the maximum number of SCSI commands we will accept
 135      * at one time.
 136      */
 137     if ((devq = cam_simq_alloc(AMR_MAX_SCSI_CMDS)) == NULL)
 138         return(ENOMEM);
 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,
 148                                                   "amr",
 149                                                   sc,
 150                                                   device_get_unit(sc->amr_dev),
 151                                                   &sim_mplock,
 152                                                   1,
 153                                                   AMR_MAX_SCSI_CMDS,
 154                                                   devq)) == NULL) {
 155             device_printf(sc->amr_dev, "CAM SIM attach failed\n");
 156             return(ENOMEM);
 157         }
 158
 159         /* register the bus ID so we can get it later */
 160         if (xpt_bus_register(sc->amr_cam_sim[chn], chn)) {
 161             device_printf(sc->amr_dev, "CAM XPT bus registration failed\n");
 162             return(ENXIO);
 163         }
 164     }
 165     cam_simq_release(devq);
 166     /*
 167      * XXX we should scan the config and work out which devices are actually
 168      * protected.
 169      */
 170     return(0);
 171 }
 172
 173 /********************************************************************************
 174  * Disconnect ourselves from CAM
 175  */
 176 void
 177 amr_cam_detach(struct amr_softc *sc)
 178 {
 179     int         chn;
 180
 181     /*
 182      * If a sim was allocated for a channel, free it
 183      */
 184     for (chn = 0; chn < sc->amr_maxchan; chn++) {
 185         if (sc->amr_cam_sim[chn] != NULL) {
 186             xpt_bus_deregister(cam_sim_path(sc->amr_cam_sim[chn]));
 187             cam_sim_free(sc->amr_cam_sim[chn]);
 188         }
 189     }
 190 }
 191
 192 /********************************************************************************
 193  ********************************************************************************
 194                                                         CAM passthrough interface
 195  ********************************************************************************
 196  ********************************************************************************/
 197
 198 /********************************************************************************
 199  * Handle a request for action from CAM
 200  */
 201 static void
 202 amr_cam_action(struct cam_sim *sim, union ccb *ccb)
 203 {
 204     struct amr_softc    *sc = cam_sim_softc(sim);
 205
 206     switch(ccb->ccb_h.func_code) {
 207
 208     /*
 209      * Perform SCSI I/O to a physical device.
 210      */
 211     case XPT_SCSI_IO:
 212     {
 213         struct ccb_hdr          *ccbh = &ccb->ccb_h;
 214         struct ccb_scsiio       *csio = &ccb->csio;
 215
 216         /* Validate the CCB */
 217         ccbh->status = CAM_REQ_INPROG;
 218
 219         /* check the CDB length */
 220         if (csio->cdb_len > AMR_MAX_EXTCDB_LEN)
 221             ccbh->status = CAM_REQ_CMP_ERR;
 222
 223         if ((csio->cdb_len > AMR_MAX_CDB_LEN) && (sc->support_ext_cdb == 0 ))
 224             ccbh->status = CAM_REQ_CMP_ERR;
 225
 226         /* check that the CDB pointer is not to a physical address */
 227         if ((ccbh->flags & CAM_CDB_POINTER) && (ccbh->flags & CAM_CDB_PHYS))
 228             ccbh->status = CAM_REQ_CMP_ERR;
 229
 230         /* if there is data transfer, it must be to/from a virtual address */
 231         if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 232             if (ccbh->flags & CAM_DATA_PHYS)            /* we can't map it */
 233                 ccbh->status = CAM_REQ_CMP_ERR;
 234             if (ccbh->flags & CAM_SCATTER_VALID)        /* we want to do the s/g setup */
 235                 ccbh->status = CAM_REQ_CMP_ERR;
 236         }
 237
 238         /*
 239          * If the command is to a LUN other than 0, fail it.
 240          * This is probably incorrect, but during testing the firmware did not
 241          * seem to respect the LUN field, and thus devices appear echoed.
 242          */
 243         if (csio->ccb_h.target_lun != 0)
 244             ccbh->status = CAM_REQ_CMP_ERR;
 245
 246         /* if we're happy with the request, queue it for attention */
 247         if (ccbh->status == CAM_REQ_INPROG) {
 248
 249             /* save the channel number in the ccb */
 250             csio->ccb_h.sim_priv.entries[0].field = cam_sim_bus(sim);
 251
 252             amr_enqueue_ccb(sc, ccb);
 253             amr_startio(sc);
 254             return;
 255         }
 256         break;
 257     }
 258
 259     case XPT_CALC_GEOMETRY:
 260     {
 261         struct    ccb_calc_geometry *ccg = &ccb->ccg;
 262         u_int32_t size_in_mb;
 263         u_int32_t secs_per_cylinder;
 264
 265         size_in_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size);
 266
 267         if (size_in_mb > 1024) {
 268             ccg->heads = 255;
 269             ccg->secs_per_track = 63;
 270         } else {
 271             ccg->heads = 64;
 272             ccg->secs_per_track = 32;
 273         }
 274         secs_per_cylinder = ccg->heads * ccg->secs_per_track;
 275         ccg->cylinders = ccg->volume_size / secs_per_cylinder;
 276         ccb->ccb_h.status = CAM_REQ_CMP;
 277         break;
 278     }
 279
 280     /*
 281      * Return path stats.  Some of these should probably be
 282      * amended.
 283      */
 284     case XPT_PATH_INQ:
 285     {
 286         struct ccb_pathinq      *cpi = & ccb->cpi;
 287
 288         debug(3, "XPT_PATH_INQ");
 289         cpi->version_num = 1;           /* XXX??? */
 290         cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
 291         cpi->target_sprt = 0;
 292         cpi->hba_misc = PIM_NOBUSRESET;
 293         cpi->hba_eng_cnt = 0;
 294         cpi->max_target = AMR_MAX_TARGETS;
 295         cpi->max_lun = 0 /* AMR_MAX_LUNS*/;
 296         cpi->initiator_id = 7;          /* XXX variable? */
 297         strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 298         strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
 299         strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 300         cpi->unit_number = cam_sim_unit(sim);
 301         cpi->bus_id = cam_sim_bus(sim);
 302         cpi->base_transfer_speed = 132 * 1024;  /* XXX get from controller? */
 303         cpi->transport = XPORT_SPI;
 304         cpi->transport_version = 2;
 305         cpi->protocol = PROTO_SCSI;
 306         cpi->protocol_version = SCSI_REV_2;
 307         cpi->ccb_h.status = CAM_REQ_CMP;
 308
 309         break;
 310     }
 311
 312     case XPT_RESET_BUS:
 313     {
 314         struct ccb_pathinq      *cpi = & ccb->cpi;
 315
 316         debug(1, "XPT_RESET_BUS");
 317         cpi->ccb_h.status = CAM_REQ_CMP;
 318         break;
 319     }
 320
 321     case XPT_RESET_DEV:
 322     {
 323         debug(1, "XPT_RESET_DEV");
 324         ccb->ccb_h.status = CAM_REQ_CMP;
 325         break;
 326     }
 327
 328     case XPT_GET_TRAN_SETTINGS:
 329     {
 330         struct ccb_trans_settings       *cts = &(ccb->cts);
 331
 332         debug(3, "XPT_GET_TRAN_SETTINGS");
 333
 334         struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
 335         struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
 336
 337         cts->protocol = PROTO_SCSI;
 338         cts->protocol_version = SCSI_REV_2;
 339         cts->transport = XPORT_SPI;
 340         cts->transport_version = 2;
 341
 342         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 343                 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
 344                 break;
 345         }
 346
 347         spi->flags = CTS_SPI_FLAGS_DISC_ENB;
 348         spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT;
 349         spi->sync_period = 6;   /* 40MHz how wide is this bus? */
 350         spi->sync_offset = 31;  /* How to extract this from board? */
 351
 352         spi->valid = CTS_SPI_VALID_SYNC_RATE
 353             | CTS_SPI_VALID_SYNC_OFFSET
 354             | CTS_SPI_VALID_BUS_WIDTH
 355             | CTS_SPI_VALID_DISC;
 356         scsi->valid = CTS_SCSI_VALID_TQ;
 357         ccb->ccb_h.status = CAM_REQ_CMP;
 358         break;
 359     }
 360
 361     case XPT_SET_TRAN_SETTINGS:
 362         debug(3, "XPT_SET_TRAN_SETTINGS");
 363         ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
 364         break;
 365
 366
 367     /*
 368      * Reject anything else as unsupported.
 369      */
 370     default:
 371         /* we can't do this */
 372         ccb->ccb_h.status = CAM_REQ_INVALID;
 373         break;
 374     }
 375     xpt_done(ccb);
 376 }
 377
 378 /********************************************************************************
 379  * Convert a CAM CCB off the top of the CCB queue to a passthrough SCSI command.
 380  */
 381 int
 382 amr_cam_command(struct amr_softc *sc, struct amr_command **acp)
 383 {
 384     struct amr_command          *ac;
 385     struct amr_passthrough              *ap;
 386     struct amr_ext_passthrough  *aep;
 387     struct ccb_scsiio                   *csio;
 388     int                         bus, target, error;
 389
 390     error = 0;
 391     ac = NULL;
 392     ap = NULL;
 393     aep = NULL;
 394
 395     /* check to see if there is a ccb for us to work with */
 396     if ((csio = (struct ccb_scsiio *)amr_dequeue_ccb(sc)) == NULL)
 397         goto out;
 398
 399     /* get bus/target, XXX validate against protected devices? */
 400     bus = csio->ccb_h.sim_priv.entries[0].field;
 401     target = csio->ccb_h.target_id;
 402
 403     /*
 404      * Build a passthrough command.
 405      */
 406
 407     /* construct passthrough */
 408     if (sc->support_ext_cdb ) {
 409             aep = kmalloc(sizeof(*aep), M_DEVBUF, M_INTWAIT | M_ZERO);
 410             aep->ap_timeout = 2;
 411             aep->ap_ars = 1;
 412             aep->ap_request_sense_length = 14;
 413             aep->ap_islogical = 0;
 414             aep->ap_channel = bus;
 415             aep->ap_scsi_id = target;
 416             aep->ap_logical_drive_no = csio->ccb_h.target_lun;
 417             aep->ap_cdb_length = csio->cdb_len;
 418             aep->ap_data_transfer_length = csio->dxfer_len;
 419             if (csio->ccb_h.flags & CAM_CDB_POINTER) {
 420                 bcopy(csio->cdb_io.cdb_ptr, aep->ap_cdb, csio->cdb_len);
 421             } else {
 422                 bcopy(csio->cdb_io.cdb_bytes, aep->ap_cdb, csio->cdb_len);
 423             }
 424             /* we leave the data s/g list and s/g count to the map routine later */
 425
 426             debug(2, " COMMAND %x/%d+%d to %d:%d:%d", aep->ap_cdb[0], aep->ap_cdb_length, csio->dxfer_len,
 427                   aep->ap_channel, aep->ap_scsi_id, aep->ap_logical_drive_no);
 428
 429     } else {
 430             ap = kmalloc(sizeof(*ap), M_DEVBUF, M_INTWAIT | M_ZERO);
 431             ap->ap_timeout = 0;
 432             ap->ap_ars = 1;
 433             ap->ap_request_sense_length = 14;
 434             ap->ap_islogical = 0;
 435             ap->ap_channel = bus;
 436             ap->ap_scsi_id = target;
 437             ap->ap_logical_drive_no = csio->ccb_h.target_lun;
 438             ap->ap_cdb_length = csio->cdb_len;
 439             ap->ap_data_transfer_length = csio->dxfer_len;
 440             if (csio->ccb_h.flags & CAM_CDB_POINTER) {
 441                 bcopy(csio->cdb_io.cdb_ptr, ap->ap_cdb, csio->cdb_len);
 442             } else {
 443                 bcopy(csio->cdb_io.cdb_bytes, ap->ap_cdb, csio->cdb_len);
 444             }
 445             /* we leave the data s/g list and s/g count to the map routine later */
 446
 447             debug(2, " COMMAND %x/%d+%d to %d:%d:%d", ap->ap_cdb[0], ap->ap_cdb_length, csio->dxfer_len,
 448                   ap->ap_channel, ap->ap_scsi_id, ap->ap_logical_drive_no);
 449     }
 450
 451     /* construct command */
 452     if ((ac = amr_alloccmd(sc)) == NULL) {
 453         error = ENOMEM;
 454         goto out;
 455     }
 456
 457     ac->ac_flags |= AMR_CMD_DATAOUT;
 458
 459     ac->ac_ccb_data = csio->data_ptr;
 460     ac->ac_ccb_length = csio->dxfer_len;
 461     if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 462         ac->ac_flags |= AMR_CMD_CCB_DATAIN;
 463     if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 464         ac->ac_flags |= AMR_CMD_CCB_DATAOUT;
 465
 466     ac->ac_private = csio;
 467     if ( sc->support_ext_cdb ) {
 468             ac->ac_data = aep;
 469             ac->ac_length = sizeof(*aep);
 470             ac->ac_complete = amr_cam_complete_extcdb;
 471             ac->ac_mailbox.mb_command = AMR_CMD_EXTPASS;
 472     } else {
 473             ac->ac_data = ap;
 474             ac->ac_length = sizeof(*ap);
 475             ac->ac_complete = amr_cam_complete;
 476             ac->ac_mailbox.mb_command = AMR_CMD_PASS;
 477     }
 478
 479 out:
 480     if (error != 0) {
 481         if (ac != NULL)
 482             amr_releasecmd(ac);
 483         if (ap != NULL)
 484             kfree(ap, M_DEVBUF);
 485         if (aep != NULL)
 486             kfree(aep, M_DEVBUF);
 487         if (csio != NULL)                       /* put it back and try again later */
 488             amr_requeue_ccb(sc, (union ccb *)csio);
 489     }
 490     *acp = ac;
 491     return(error);
 492 }
 493
 494 /********************************************************************************
 495  * Check for interrupt status
 496  */
 497 static void
 498 amr_cam_poll(struct cam_sim *sim)
 499 {
 500     amr_done(cam_sim_softc(sim));
 501 }
 502
 503  /********************************************************************************
 504  * Handle completion of a command submitted via CAM.
 505  */
 506 static void
 507 amr_cam_complete(struct amr_command *ac)
 508 {
 509     struct amr_passthrough      *ap = (struct amr_passthrough *)ac->ac_data;
 510     struct ccb_scsiio           *csio = (struct ccb_scsiio *)ac->ac_private;
 511     struct scsi_inquiry_data    *inq = (struct scsi_inquiry_data *)csio->data_ptr;
 512
 513     /* XXX note that we're ignoring ac->ac_status - good idea? */
 514
 515     debug(1, "status 0x%x  scsi_status 0x%x", ac->ac_status, ap->ap_scsi_status);
 516
 517     /*
 518      * Hide disks from CAM so that they're not picked up and treated as 'normal' disks.
 519      *
 520      * If the configuration provides a mechanism to mark a disk a "not managed", we
 521      * could add handling for that to allow disks to be selectively visible.
 522      */
 523
 524     if ((ap->ap_cdb[0] == INQUIRY) && (SID_TYPE(inq) == T_DIRECT)) {
 525         bzero(csio->data_ptr, csio->dxfer_len);
 526         if (ap->ap_scsi_status == 0xf0) {
 527             csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
 528         } else {
 529             csio->ccb_h.status = CAM_DEV_NOT_THERE;
 530         }
 531     } else {
 532
 533         /* handle passthrough SCSI status */
 534         switch(ap->ap_scsi_status) {
 535         case 0:                         /* completed OK */
 536             csio->ccb_h.status = CAM_REQ_CMP;
 537             break;
 538
 539         case 0x02:
 540             csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
 541             csio->scsi_status = SCSI_STATUS_CHECK_COND;
 542             bcopy(ap->ap_request_sense_area, &csio->sense_data, AMR_MAX_REQ_SENSE_LEN);
 543             csio->sense_len = AMR_MAX_REQ_SENSE_LEN;
 544             csio->ccb_h.status |= CAM_AUTOSNS_VALID;
 545             break;
 546
 547         case 0x08:
 548             csio->ccb_h.status = CAM_SCSI_BUSY;
 549             break;
 550
 551         case 0xf0:
 552         case 0xf4:
 553         default:
 554             csio->ccb_h.status = CAM_REQ_CMP_ERR;
 555             break;
 556         }
 557     }
 558     kfree(ap, M_DEVBUF);
 559     if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)
 560         debug(2, "%*D\n", imin(csio->dxfer_len, 16), csio->data_ptr, " ");
 561     xpt_done((union ccb *)csio);
 562     amr_releasecmd(ac);
 563 }
 564
 565 /********************************************************************************
 566  * Handle completion of a command submitted via CAM.
 567  * Completion for extended cdb
 568  */
 569 static void
 570 amr_cam_complete_extcdb(struct amr_command *ac)
 571 {
 572     struct amr_ext_passthrough      *aep = (struct amr_ext_passthrough *)ac->ac_data;
 573     struct ccb_scsiio           *csio = (struct ccb_scsiio *)ac->ac_private;
 574     struct scsi_inquiry_data    *inq = (struct scsi_inquiry_data *)csio->data_ptr;
 575
 576     /* XXX note that we're ignoring ac->ac_status - good idea? */
 577
 578     debug(1, "status 0x%x  scsi_status 0x%x", ac->ac_status, aep->ap_scsi_status);
 579
 580     /*
 581      * Hide disks from CAM so that they're not picked up and treated as 'normal' disks.
 582      *
 583      * If the configuration provides a mechanism to mark a disk a "not managed", we
 584      * could add handling for that to allow disks to be selectively visible.
 585      */
 586
 587     if ((aep->ap_cdb[0] == INQUIRY) && (SID_TYPE(inq) == T_DIRECT)) {
 588         bzero(csio->data_ptr, csio->dxfer_len);
 589         if (aep->ap_scsi_status == 0xf0) {
 590             csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
 591         } else {
 592             csio->ccb_h.status = CAM_DEV_NOT_THERE;
 593         }
 594     } else {
 595
 596         /* handle passthrough SCSI status */
 597         switch(aep->ap_scsi_status) {
 598         case 0:                         /* completed OK */
 599             csio->ccb_h.status = CAM_REQ_CMP;
 600             break;
 601
 602         case 0x02:
 603             csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
 604             csio->scsi_status = SCSI_STATUS_CHECK_COND;
 605             bcopy(aep->ap_request_sense_area, &csio->sense_data, AMR_MAX_REQ_SENSE_LEN);
 606             csio->sense_len = AMR_MAX_REQ_SENSE_LEN;
 607             csio->ccb_h.status |= CAM_AUTOSNS_VALID;
 608             break;
 609
 610         case 0x08:
 611             csio->ccb_h.status = CAM_SCSI_BUSY;
 612             break;
 613
 614         case 0xf0:
 615         case 0xf4:
 616         default:
 617             csio->ccb_h.status = CAM_REQ_CMP_ERR;
 618             break;
 619         }
 620     }
 621     kfree(aep, M_DEVBUF);
 622     if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)
 623         debug(2, "%*D\n", imin(csio->dxfer_len, 16), csio->data_ptr, " ");
 624     xpt_done((union ccb *)csio);
 625     amr_releasecmd(ac);
 626 }