sys/dev/raid/aac/aac_cam.c

   1 /*-
   2  * Copyright (c) 2002 Adaptec, Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: head/sys/dev/aac/aac_cam.c 251115 2013-05-30 00:11:22Z marius $
  27  */
  28
  29 /*
  30  * CAM front-end for communicating with non-DASD devices
  31  */
  32
  33 #include "opt_aac.h"
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/lock.h>
  39 #include <sys/malloc.h>
  40 #include <sys/module.h>
  41
  42 #include <bus/cam/cam.h>
  43 #include <bus/cam/cam_ccb.h>
  44 #include <bus/cam/cam_debug.h>
  45 #include <bus/cam/cam_periph.h>
  46 #include <bus/cam/cam_sim.h>
  47 #include <bus/cam/cam_xpt_periph.h>
  48 #include <bus/cam/cam_xpt_sim.h>
  49 #include <bus/cam/scsi/scsi_all.h>
  50 #include <bus/cam/scsi/scsi_message.h>
  51
  52 #include <sys/bus.h>
  53 #include <sys/conf.h>
  54 #include <sys/disk.h>
  55
  56 #include <machine/md_var.h>
  57 #include <sys/rman.h>
  58
  59 #include <vm/vm.h>
  60 #include <vm/pmap.h>
  61
  62 #include <dev/raid/aac/aacreg.h>
  63 #include <dev/raid/aac/aac_ioctl.h>
  64 #include <dev/raid/aac/aacvar.h>
  65
  66 struct aac_cam {
  67         device_t                dev;
  68         struct aac_sim          *inf;
  69         struct cam_sim          *sim;
  70         struct cam_path         *path;
  71 };
  72
  73 static int aac_cam_probe(device_t dev);
  74 static int aac_cam_attach(device_t dev);
  75 static int aac_cam_detach(device_t dev);
  76 static void aac_cam_action(struct cam_sim *, union ccb *);
  77 static void aac_cam_poll(struct cam_sim *);
  78 static void aac_cam_complete(struct aac_command *);
  79 static void aac_cam_rescan(struct aac_softc *sc, uint32_t channel,
  80     uint32_t target_id);
  81 static void aac_bus_scan_cb(struct cam_periph *periph, union ccb *ccb);
  82
  83 static u_int32_t aac_cam_reset_bus(struct cam_sim *, union ccb *);
  84 static u_int32_t aac_cam_abort_ccb(struct cam_sim *, union ccb *);
  85 static u_int32_t aac_cam_term_io(struct cam_sim *, union ccb *);
  86
  87 static devclass_t       aac_pass_devclass;
  88
  89 static device_method_t  aac_pass_methods[] = {
  90         DEVMETHOD(device_probe,         aac_cam_probe),
  91         DEVMETHOD(device_attach,        aac_cam_attach),
  92         DEVMETHOD(device_detach,        aac_cam_detach),
  93         DEVMETHOD_END
  94 };
  95
  96 static driver_t aac_pass_driver = {
  97         "aacp",
  98         aac_pass_methods,
  99         sizeof(struct aac_cam)
 100 };
 101
 102 DRIVER_MODULE(aacp, aac, aac_pass_driver, aac_pass_devclass, NULL, NULL);
 103 MODULE_DEPEND(aacp, cam, 1, 1, 1);
 104
 105 static MALLOC_DEFINE(M_AACCAM, "aaccam", "AAC CAM info");
 106
 107 static void
 108 aac_cam_rescan(struct aac_softc *sc, uint32_t channel, uint32_t target_id)
 109 {
 110         union ccb *ccb;
 111         struct aac_sim *sim;
 112         struct aac_cam *camsc;
 113
 114         if (target_id == AAC_CAM_TARGET_WILDCARD)
 115                 target_id = CAM_TARGET_WILDCARD;
 116
 117         TAILQ_FOREACH(sim, &sc->aac_sim_tqh, sim_link) {
 118                 camsc = sim->aac_cam;
 119                 if (camsc == NULL || camsc->inf == NULL ||
 120                     camsc->inf->BusNumber != channel)
 121                         continue;
 122
 123                 ccb = xpt_alloc_ccb();
 124                 if (ccb == NULL) {
 125                         device_printf(sc->aac_dev,
 126                             "Cannot allocate ccb for bus rescan.\n");
 127                         return;
 128                 }
 129
 130                 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
 131                     cam_sim_path(camsc->sim),
 132                     target_id, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 133                         xpt_free_ccb(&ccb->ccb_h);
 134                         device_printf(sc->aac_dev,
 135                             "Cannot create path for bus rescan.\n");
 136                         return;
 137                 }
 138                 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, 5/*priority (low)*/);
 139                 ccb->ccb_h.func_code = XPT_SCAN_BUS;
 140                 ccb->ccb_h.cbfcnp = aac_bus_scan_cb;
 141                 ccb->crcn.flags = CAM_FLAG_NONE;
 142                 xpt_action(ccb);
 143                 break;
 144         }
 145 }
 146
 147 static void
 148 aac_bus_scan_cb(struct cam_periph *periph, union ccb *ccb)
 149 {
 150         if (ccb->ccb_h.status != CAM_REQ_CMP)
 151                 kprintf("cam_scan_callback: failure status = %x\n",
 152                         ccb->ccb_h.status);
 153
 154         xpt_free_path(ccb->ccb_h.path);
 155         xpt_free_ccb(&ccb->ccb_h);
 156 }
 157
 158 static void
 159 aac_cam_event(struct aac_softc *sc, struct aac_event *event, void *arg)
 160 {
 161         union ccb *ccb;
 162         struct aac_cam *camsc;
 163
 164         switch (event->ev_type) {
 165         case AAC_EVENT_CMFREE:
 166                 ccb = arg;
 167                 camsc = ccb->ccb_h.sim_priv.entries[0].ptr;
 168                 kfree(event, M_AACCAM);
 169                 xpt_release_simq(camsc->sim, 1);
 170                 ccb->ccb_h.status = CAM_REQUEUE_REQ;
 171                 xpt_done(ccb);
 172                 break;
 173         default:
 174                 device_printf(sc->aac_dev, "unknown event %d in aac_cam\n",
 175                     event->ev_type);
 176                 break;
 177         }
 178
 179         return;
 180 }
 181
 182 static int
 183 aac_cam_probe(device_t dev)
 184 {
 185         fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 186
 187         return (0);
 188 }
 189
 190 static int
 191 aac_cam_detach(device_t dev)
 192 {
 193         struct aac_softc *sc;
 194         struct aac_cam *camsc;
 195         fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 196
 197         camsc = (struct aac_cam *)device_get_softc(dev);
 198         sc = camsc->inf->aac_sc;
 199         camsc->inf->aac_cam = NULL;
 200
 201         lockmgr(&sc->aac_io_lock, LK_EXCLUSIVE);
 202
 203         xpt_async(AC_LOST_DEVICE, camsc->path, NULL);
 204         xpt_free_path(camsc->path);
 205         xpt_bus_deregister(cam_sim_path(camsc->sim));
 206         cam_sim_free(camsc->sim);
 207
 208         sc->cam_rescan_cb = NULL;
 209
 210         lockmgr(&sc->aac_io_lock, LK_RELEASE);
 211
 212         return (0);
 213 }
 214
 215 /*
 216  * Register the driver as a CAM SIM
 217  */
 218 static int
 219 aac_cam_attach(device_t dev)
 220 {
 221         struct cam_devq *devq;
 222         struct cam_sim *sim;
 223         struct cam_path *path;
 224         struct aac_cam *camsc;
 225         struct aac_sim *inf;
 226
 227         fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 228
 229         camsc = (struct aac_cam *)device_get_softc(dev);
 230         inf = (struct aac_sim *)device_get_ivars(dev);
 231         camsc->inf = inf;
 232         camsc->inf->aac_cam = camsc;
 233
 234         devq = cam_simq_alloc(inf->TargetsPerBus);
 235         if (devq == NULL)
 236                 return (EIO);
 237
 238         sim = cam_sim_alloc(aac_cam_action, aac_cam_poll, "aacp", camsc,
 239             device_get_unit(dev), &inf->aac_sc->aac_io_lock, 1, 1, devq);
 240         cam_simq_release(devq);
 241         if (sim == NULL)
 242                 return (EIO);
 243
 244         /* Since every bus has it's own sim, every bus 'appears' as bus 0 */
 245         lockmgr(&inf->aac_sc->aac_io_lock, LK_EXCLUSIVE);
 246         if (xpt_bus_register(sim, 0) != CAM_SUCCESS) {
 247                 cam_sim_free(sim);
 248                 lockmgr(&inf->aac_sc->aac_io_lock, LK_RELEASE);
 249                 return (EIO);
 250         }
 251
 252         if (xpt_create_path(&path, NULL, cam_sim_path(sim),
 253             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 254                 xpt_bus_deregister(cam_sim_path(sim));
 255                 cam_sim_free(sim);
 256                 lockmgr(&inf->aac_sc->aac_io_lock, LK_RELEASE);
 257                 return (EIO);
 258         }
 259         inf->aac_sc->cam_rescan_cb = aac_cam_rescan;
 260         lockmgr(&inf->aac_sc->aac_io_lock, LK_RELEASE);
 261
 262         camsc->sim = sim;
 263         camsc->path = path;
 264
 265         return (0);
 266 }
 267
 268 static void
 269 aac_cam_action(struct cam_sim *sim, union ccb *ccb)
 270 {
 271         struct  aac_cam *camsc;
 272         struct  aac_softc *sc;
 273         struct  aac_srb *srb;
 274         struct  aac_fib *fib;
 275         struct  aac_command *cm;
 276
 277         camsc = (struct aac_cam *)cam_sim_softc(sim);
 278         sc = camsc->inf->aac_sc;
 279         fwprintf(sc, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 280
 281         /* Synchronous ops, and ops that don't require communication with the
 282          * controller */
 283         switch(ccb->ccb_h.func_code) {
 284         case XPT_SCSI_IO:
 285         case XPT_RESET_DEV:
 286                 /* These are handled down below */
 287                 break;
 288         case XPT_CALC_GEOMETRY:
 289         {
 290                 struct ccb_calc_geometry *ccg;
 291                 u_int32_t size_mb;
 292                 u_int32_t secs_per_cylinder;
 293
 294                 ccg = &ccb->ccg;
 295                 size_mb = ccg->volume_size /
 296                     ((1024L * 1024L) / ccg->block_size);
 297                 if (size_mb >= (2 * 1024)) {            /* 2GB */
 298                         ccg->heads = 255;
 299                         ccg->secs_per_track = 63;
 300                 } else if (size_mb >= (1 * 1024)) {     /* 1GB */
 301                         ccg->heads = 128;
 302                         ccg->secs_per_track = 32;
 303                 } else {
 304                         ccg->heads = 64;
 305                         ccg->secs_per_track = 32;
 306                 }
 307                 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
 308                 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
 309
 310                 ccb->ccb_h.status = CAM_REQ_CMP;
 311                 xpt_done(ccb);
 312                 return;
 313         }
 314         case XPT_PATH_INQ:
 315         {
 316                 struct ccb_pathinq *cpi = &ccb->cpi;
 317
 318                 cpi->version_num = 1;
 319                 cpi->hba_inquiry = PI_WIDE_16;
 320                 cpi->target_sprt = 0;
 321
 322                 /*
 323                  * Resetting via the passthrough or parallel bus scan
 324                  * causes problems.
 325                  */
 326                 cpi->hba_misc = PIM_NOBUSRESET | PIM_SEQSCAN;
 327                 cpi->hba_eng_cnt = 0;
 328                 cpi->max_target = camsc->inf->TargetsPerBus;
 329                 cpi->max_lun = 8;       /* Per the controller spec */
 330                 cpi->initiator_id = camsc->inf->InitiatorBusId;
 331                 cpi->bus_id = camsc->inf->BusNumber;
 332                 cpi->base_transfer_speed = 3300;
 333                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 334                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 335                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 336                 cpi->unit_number = cam_sim_unit(sim);
 337                 cpi->transport = XPORT_SPI;
 338                 cpi->transport_version = 2;
 339                 cpi->protocol = PROTO_SCSI;
 340                 cpi->protocol_version = SCSI_REV_2;
 341                 ccb->ccb_h.status = CAM_REQ_CMP;
 342                 xpt_done(ccb);
 343                 return;
 344         }
 345         case XPT_GET_TRAN_SETTINGS:
 346         {
 347                 struct ccb_trans_settings_scsi *scsi =
 348                         &ccb->cts.proto_specific.scsi;
 349                 struct ccb_trans_settings_spi *spi =
 350                         &ccb->cts.xport_specific.spi;
 351                 ccb->cts.protocol = PROTO_SCSI;
 352                 ccb->cts.protocol_version = SCSI_REV_2;
 353                 ccb->cts.transport = XPORT_SPI;
 354                 ccb->cts.transport_version = 2;
 355                 if (ccb->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 356                         scsi->valid = CTS_SCSI_VALID_TQ;
 357                         spi->valid |= CTS_SPI_VALID_DISC;
 358                 } else {
 359                         scsi->valid = 0;
 360                 }
 361                 ccb->ccb_h.status = CAM_REQ_CMP;
 362                 xpt_done(ccb);
 363                 return;
 364         }
 365         case XPT_SET_TRAN_SETTINGS:
 366                 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
 367                 xpt_done(ccb);
 368                 return;
 369         case XPT_RESET_BUS:
 370                 if (!(sc->flags & AAC_FLAGS_CAM_NORESET)) {
 371                         ccb->ccb_h.status = aac_cam_reset_bus(sim, ccb);
 372                 } else {
 373                         ccb->ccb_h.status = CAM_REQ_CMP;
 374                 }
 375                 xpt_done(ccb);
 376                 return;
 377         case XPT_ABORT:
 378                 ccb->ccb_h.status = aac_cam_abort_ccb(sim, ccb);
 379                 xpt_done(ccb);
 380                 return;
 381         case XPT_TERM_IO:
 382                 ccb->ccb_h.status = aac_cam_term_io(sim, ccb);
 383                 xpt_done(ccb);
 384                 return;
 385         default:
 386                 device_printf(sc->aac_dev, "Unsupported command 0x%x\n",
 387                     ccb->ccb_h.func_code);
 388                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 389                 xpt_done(ccb);
 390                 return;
 391         }
 392
 393         /* Async ops that require communcation with the controller */
 394
 395         if (aac_alloc_command(sc, &cm)) {
 396                 struct aac_event *event;
 397
 398                 xpt_freeze_simq(sim, 1);
 399                 ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
 400                 ccb->ccb_h.sim_priv.entries[0].ptr = camsc;
 401                 event = kmalloc(sizeof(struct aac_event), M_AACCAM,
 402                                 M_INTWAIT | M_ZERO);
 403                 event->ev_callback = aac_cam_event;
 404                 event->ev_arg = ccb;
 405                 event->ev_type = AAC_EVENT_CMFREE;
 406                 aac_add_event(sc, event);
 407                 return;
 408         }
 409
 410         fib = cm->cm_fib;
 411         srb = (struct aac_srb *)&fib->data[0];
 412         cm->cm_datalen = 0;
 413
 414         switch (ccb->ccb_h.flags & CAM_DIR_MASK) {
 415         case CAM_DIR_IN:
 416                 srb->flags = AAC_SRB_FLAGS_DATA_IN;
 417                 cm->cm_flags |= AAC_CMD_DATAIN;
 418                 break;
 419         case CAM_DIR_OUT:
 420                 srb->flags = AAC_SRB_FLAGS_DATA_OUT;
 421                 cm->cm_flags |= AAC_CMD_DATAOUT;
 422                 break;
 423         case CAM_DIR_NONE:
 424                 srb->flags = AAC_SRB_FLAGS_NO_DATA_XFER;
 425                 break;
 426         default:
 427                 srb->flags = AAC_SRB_FLAGS_UNSPECIFIED_DIRECTION;
 428                 cm->cm_flags |= AAC_CMD_DATAIN | AAC_CMD_DATAOUT;
 429                 break;
 430         }
 431
 432         switch(ccb->ccb_h.func_code) {
 433         case XPT_SCSI_IO:
 434         {
 435                 struct ccb_scsiio *csio = &ccb->csio;
 436
 437                 srb->function = AAC_SRB_FUNC_EXECUTE_SCSI;
 438
 439                 /*
 440                  * Copy the CDB into the SRB.  It's only 6-16 bytes,
 441                  * so a copy is not too expensive.
 442                  */
 443                 srb->cdb_len = csio->cdb_len;
 444                 if (ccb->ccb_h.flags & CAM_CDB_POINTER)
 445                         bcopy(csio->cdb_io.cdb_ptr, (u_int8_t *)&srb->cdb[0],
 446                             srb->cdb_len);
 447                 else
 448                         bcopy(csio->cdb_io.cdb_bytes, (u_int8_t *)&srb->cdb[0],
 449                             srb->cdb_len);
 450
 451                 /* Set command */
 452                 fib->Header.Command = (sc->flags & AAC_FLAGS_SG_64BIT) ?
 453                         ScsiPortCommandU64 : ScsiPortCommand;
 454
 455                 /* Map the s/g list. XXX 32bit addresses only! */
 456                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 457                         if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) {
 458                                 srb->data_len = csio->dxfer_len;
 459                                 if (ccb->ccb_h.flags & CAM_DATA_PHYS) {
 460                                         /* Send a 32bit command */
 461                                         fib->Header.Command = ScsiPortCommand;
 462                                         srb->sg_map.SgCount = 1;
 463                                         srb->sg_map.SgEntry[0].SgAddress =
 464                                             (uint32_t)(uintptr_t)csio->data_ptr;
 465                                         srb->sg_map.SgEntry[0].SgByteCount =
 466                                             csio->dxfer_len;
 467                                 } else {
 468                                         /*
 469                                          * Arrange things so that the S/G
 470                                          * map will get set up automagically
 471                                          */
 472                                         cm->cm_data = (void *)csio->data_ptr;
 473                                         cm->cm_datalen = csio->dxfer_len;
 474                                         cm->cm_sgtable = &srb->sg_map;
 475                                 }
 476                         } else {
 477                                 /* XXX Need to handle multiple s/g elements */
 478                                 panic("aac_cam: multiple s/g elements");
 479                         }
 480                 } else {
 481                         srb->sg_map.SgCount = 0;
 482                         srb->sg_map.SgEntry[0].SgByteCount = 0;
 483                         srb->data_len = 0;
 484                 }
 485
 486                 break;
 487         }
 488         case XPT_RESET_DEV:
 489                 if (!(sc->flags & AAC_FLAGS_CAM_NORESET)) {
 490                         srb->function = AAC_SRB_FUNC_RESET_DEVICE;
 491                         break;
 492                 } else {
 493                         ccb->ccb_h.status = CAM_REQ_CMP;
 494                         xpt_done(ccb);
 495                         return;
 496                 }
 497         default:
 498                 break;
 499         }
 500
 501         srb->bus = camsc->inf->BusNumber; /* Bus number relative to the card */
 502         srb->target = ccb->ccb_h.target_id;
 503         srb->lun = ccb->ccb_h.target_lun;
 504         srb->timeout = ccb->ccb_h.timeout;      /* XXX */
 505         srb->retry_limit = 0;
 506
 507         cm->cm_complete = aac_cam_complete;
 508         cm->cm_private = ccb;
 509         cm->cm_timestamp = time_uptime;
 510
 511         fib->Header.XferState =
 512             AAC_FIBSTATE_HOSTOWNED      |
 513             AAC_FIBSTATE_INITIALISED    |
 514             AAC_FIBSTATE_FROMHOST       |
 515             AAC_FIBSTATE_REXPECTED      |
 516             AAC_FIBSTATE_NORM;
 517         fib->Header.Size = sizeof(struct aac_fib_header) +
 518             sizeof(struct aac_srb);
 519
 520         aac_enqueue_ready(cm);
 521         aac_startio(cm->cm_sc);
 522
 523         return;
 524 }
 525
 526 static void
 527 aac_cam_poll(struct cam_sim *sim)
 528 {
 529         /*
 530          * Pinging the interrupt routine isn't very safe, nor is it
 531          * really necessary.  Do nothing.
 532          */
 533 }
 534
 535 static void
 536 aac_cam_fix_inquiry(struct aac_softc *sc, union ccb *ccb)
 537 {
 538         struct scsi_inquiry_data *inq;
 539         uint8_t *data;
 540         uint8_t device, qual;
 541
 542         /* If this is an inquiry command, fake things out */
 543         if (ccb->ccb_h.flags & CAM_CDB_POINTER)
 544                 data = ccb->csio.cdb_io.cdb_ptr;
 545         else
 546                 data = ccb->csio.cdb_io.cdb_bytes;
 547
 548         if (data[0] != INQUIRY)
 549                 return;
 550
 551         if (ccb->ccb_h.status == CAM_REQ_CMP) {
 552                 inq = (struct scsi_inquiry_data *)ccb->csio.data_ptr;
 553                 device = SID_TYPE(inq);
 554                 qual = SID_QUAL(inq);
 555
 556                 /*
 557                  * We want DASD and PROC devices to only be
 558                  * visible through the pass device.
 559                  */
 560                 if (((device == T_DIRECT) ||
 561                     (device == T_PROCESSOR) ||
 562                     (sc->flags & AAC_FLAGS_CAM_PASSONLY))) {
 563                         /*
 564                          * Some aac(4) adapters will always report that a direct
 565                          * access device is offline in response to a INQUIRY
 566                          * command that does not retreive vital product data.
 567                          * Force the qualifier to connected so that upper layers
 568                          * correctly recognize that a disk is present.
 569                          */
 570                         if ((data[1] & SI_EVPD) == 0 && device == T_DIRECT &&
 571                             qual == SID_QUAL_LU_OFFLINE)
 572                                 qual = SID_QUAL_LU_CONNECTED;
 573                         ccb->csio.data_ptr[0] = (qual << 5) | T_NODEVICE;
 574                 }
 575         } else if (ccb->ccb_h.status == CAM_SEL_TIMEOUT &&
 576                 ccb->ccb_h.target_lun != 0) {
 577                 /* fix for INQUIRYs on Lun>0 */
 578                 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
 579         }
 580 }
 581
 582 static void
 583 aac_cam_complete(struct aac_command *cm)
 584 {
 585         union   ccb *ccb;
 586         struct  aac_srb_response *srbr;
 587         struct  aac_softc *sc;
 588         int     sense_returned;
 589
 590         sc = cm->cm_sc;
 591         fwprintf(sc, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 592         ccb = cm->cm_private;
 593         srbr = (struct aac_srb_response *)&cm->cm_fib->data[0];
 594
 595         if (srbr->fib_status != 0) {
 596                 device_printf(sc->aac_dev, "Passthru FIB failed!\n");
 597                 ccb->ccb_h.status = CAM_REQ_ABORTED;
 598         } else {
 599                 /*
 600                  * The SRB error codes just happen to match the CAM error
 601                  * codes.  How convienient!
 602                  */
 603                 ccb->ccb_h.status = srbr->srb_status;
 604
 605                 /* Take care of SCSI_IO ops. */
 606                 if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
 607                         ccb->csio.scsi_status = srbr->scsi_status;
 608
 609                         /* Take care of autosense */
 610                         if (srbr->sense_len) {
 611                                 sense_returned = srbr->sense_len;
 612                                 if (sense_returned < ccb->csio.sense_len)
 613                                         ccb->csio.sense_resid =
 614                                            ccb->csio.sense_len -
 615                                            sense_returned;
 616                                         else
 617                                             ccb->csio.sense_resid = 0;
 618                                 bzero(&ccb->csio.sense_data,
 619                                     sizeof(struct scsi_sense_data));
 620                                 bcopy(&srbr->sense[0], &ccb->csio.sense_data,
 621                                     min(ccb->csio.sense_len, sense_returned));
 622                                 ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
 623                                 // scsi_sense_print(&ccb->csio);
 624                         }
 625
 626                         aac_cam_fix_inquiry(sc, ccb);
 627                 }
 628         }
 629
 630         aac_release_command(cm);
 631         xpt_done(ccb);
 632
 633         return;
 634 }
 635
 636 static u_int32_t
 637 aac_cam_reset_bus(struct cam_sim *sim, union ccb *ccb)
 638 {
 639         struct aac_fib *fib;
 640         struct aac_softc *sc;
 641         struct aac_cam *camsc;
 642         struct aac_vmioctl *vmi;
 643         struct aac_resetbus *rbc;
 644         int e;
 645
 646         camsc = (struct aac_cam *)cam_sim_softc(sim);
 647         sc = camsc->inf->aac_sc;
 648
 649         if (sc == NULL) {
 650                 kprintf("aac: Null sc?\n");
 651                 return (CAM_REQ_ABORTED);
 652         }
 653
 654         aac_alloc_sync_fib(sc, &fib);
 655
 656         vmi = (struct aac_vmioctl *)&fib->data[0];
 657         bzero(vmi, sizeof(struct aac_vmioctl));
 658
 659         vmi->Command = VM_Ioctl;
 660         vmi->ObjType = FT_DRIVE;
 661         vmi->MethId = sc->scsi_method_id;
 662         vmi->ObjId = 0;
 663         vmi->IoctlCmd = ResetBus;
 664
 665         rbc = (struct aac_resetbus *)&vmi->IoctlBuf[0];
 666         rbc->BusNumber = camsc->inf->BusNumber;
 667
 668         e = aac_sync_fib(sc, ContainerCommand, 0, fib,
 669             sizeof(struct aac_vmioctl));
 670         if (e) {
 671                 device_printf(sc->aac_dev,"Error %d sending ResetBus command\n",
 672                     e);
 673                 aac_release_sync_fib(sc);
 674                 return (CAM_REQ_ABORTED);
 675         }
 676
 677         aac_release_sync_fib(sc);
 678         return (CAM_REQ_CMP);
 679 }
 680
 681 static u_int32_t
 682 aac_cam_abort_ccb(struct cam_sim *sim, union ccb *ccb)
 683 {
 684         return (CAM_UA_ABORT);
 685 }
 686
 687 static u_int32_t
 688 aac_cam_term_io(struct cam_sim *sim, union ccb *ccb)
 689 {
 690         return (CAM_UA_TERMIO);
 691 }