sys/cam/scsi/scsi_xpt.c

   1 /*-
   2  * Implementation of the SCSI Transport
   3  *
   4  * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
   5  * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
   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  *    without modification, immediately at the beginning of the file.
  14  * 2. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  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 FOR
  21  * 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 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include <sys/param.h>
  34 #include <sys/bus.h>
  35 #include <sys/systm.h>
  36 #include <sys/types.h>
  37 #include <sys/malloc.h>
  38 #include <sys/kernel.h>
  39 #include <sys/time.h>
  40 #include <sys/conf.h>
  41 #include <sys/fcntl.h>
  42 #include <sys/md5.h>
  43 #include <sys/interrupt.h>
  44 #include <sys/sbuf.h>
  45
  46 #include <sys/lock.h>
  47 #include <sys/mutex.h>
  48 #include <sys/sysctl.h>
  49
  50 #include <cam/cam.h>
  51 #include <cam/cam_ccb.h>
  52 #include <cam/cam_queue.h>
  53 #include <cam/cam_periph.h>
  54 #include <cam/cam_sim.h>
  55 #include <cam/cam_xpt.h>
  56 #include <cam/cam_xpt_sim.h>
  57 #include <cam/cam_xpt_periph.h>
  58 #include <cam/cam_xpt_internal.h>
  59 #include <cam/cam_debug.h>
  60
  61 #include <cam/scsi/scsi_all.h>
  62 #include <cam/scsi/scsi_message.h>
  63 #include <cam/scsi/scsi_pass.h>
  64 #include <machine/stdarg.h>     /* for xpt_print below */
  65 #include "opt_cam.h"
  66
  67 struct scsi_quirk_entry {
  68         struct scsi_inquiry_pattern inq_pat;
  69         u_int8_t quirks;
  70 #define CAM_QUIRK_NOLUNS        0x01
  71 #define CAM_QUIRK_NOVPDS        0x02
  72 #define CAM_QUIRK_HILUNS        0x04
  73 #define CAM_QUIRK_NOHILUNS      0x08
  74 #define CAM_QUIRK_NORPTLUNS     0x10
  75         u_int mintags;
  76         u_int maxtags;
  77 };
  78 #define SCSI_QUIRK(dev) ((struct scsi_quirk_entry *)((dev)->quirk))
  79
  80 static int cam_srch_hi = 0;
  81 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS);
  82 SYSCTL_PROC(_kern_cam, OID_AUTO, cam_srch_hi, CTLTYPE_INT | CTLFLAG_RWTUN, 0, 0,
  83     sysctl_cam_search_luns, "I",
  84     "allow search above LUN 7 for SCSI3 and greater devices");
  85
  86 #define CAM_SCSI2_MAXLUN        8
  87 #define CAM_CAN_GET_SIMPLE_LUN(x, i)                            \
  88         ((((x)->luns[i].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==  \
  89         RPL_LUNDATA_ATYP_PERIPH) ||                             \
  90         (((x)->luns[i].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==   \
  91         RPL_LUNDATA_ATYP_FLAT))
  92 #define CAM_GET_SIMPLE_LUN(lp, i, lval)                                 \
  93         if (((lp)->luns[(i)].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==     \
  94             RPL_LUNDATA_ATYP_PERIPH) {                                  \
  95                 (lval) = (lp)->luns[(i)].lundata[1];                    \
  96         } else {                                                        \
  97                 (lval) = (lp)->luns[(i)].lundata[0];                    \
  98                 (lval) &= RPL_LUNDATA_FLAT_LUN_MASK;                    \
  99                 (lval) <<= 8;                                           \
 100                 (lval) |=  (lp)->luns[(i)].lundata[1];                  \
 101         }
 102 #define CAM_GET_LUN(lp, i, lval)                                        \
 103         (lval) = scsi_8btou64((lp)->luns[(i)].lundata);                 \
 104         (lval) = CAM_EXTLUN_BYTE_SWIZZLE(lval);
 105
 106 /*
 107  * If we're not quirked to search <= the first 8 luns
 108  * and we are either quirked to search above lun 8,
 109  * or we're > SCSI-2 and we've enabled hilun searching,
 110  * or we're > SCSI-2 and the last lun was a success,
 111  * we can look for luns above lun 8.
 112  */
 113 #define CAN_SRCH_HI_SPARSE(dv)                                  \
 114   (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0)         \
 115   && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS)               \
 116   || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
 117
 118 #define CAN_SRCH_HI_DENSE(dv)                                   \
 119   (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0)         \
 120   && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS)               \
 121   || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
 122
 123 static periph_init_t probe_periph_init;
 124
 125 static struct periph_driver probe_driver =
 126 {
 127         probe_periph_init, "probe",
 128         TAILQ_HEAD_INITIALIZER(probe_driver.units), /* generation */ 0,
 129         CAM_PERIPH_DRV_EARLY
 130 };
 131
 132 PERIPHDRIVER_DECLARE(probe, probe_driver);
 133
 134 typedef enum {
 135         PROBE_TUR,
 136         PROBE_INQUIRY,  /* this counts as DV0 for Basic Domain Validation */
 137         PROBE_FULL_INQUIRY,
 138         PROBE_REPORT_LUNS,
 139         PROBE_MODE_SENSE,
 140         PROBE_SUPPORTED_VPD_LIST,
 141         PROBE_DEVICE_ID,
 142         PROBE_EXTENDED_INQUIRY,
 143         PROBE_SERIAL_NUM,
 144         PROBE_TUR_FOR_NEGOTIATION,
 145         PROBE_INQUIRY_BASIC_DV1,
 146         PROBE_INQUIRY_BASIC_DV2,
 147         PROBE_DV_EXIT,
 148         PROBE_DONE,
 149         PROBE_INVALID
 150 } probe_action;
 151
 152 static char *probe_action_text[] = {
 153         "PROBE_TUR",
 154         "PROBE_INQUIRY",
 155         "PROBE_FULL_INQUIRY",
 156         "PROBE_REPORT_LUNS",
 157         "PROBE_MODE_SENSE",
 158         "PROBE_SUPPORTED_VPD_LIST",
 159         "PROBE_DEVICE_ID",
 160         "PROBE_EXTENDED_INQUIRY",
 161         "PROBE_SERIAL_NUM",
 162         "PROBE_TUR_FOR_NEGOTIATION",
 163         "PROBE_INQUIRY_BASIC_DV1",
 164         "PROBE_INQUIRY_BASIC_DV2",
 165         "PROBE_DV_EXIT",
 166         "PROBE_DONE",
 167         "PROBE_INVALID"
 168 };
 169
 170 #define PROBE_SET_ACTION(softc, newaction)      \
 171 do {                                                                    \
 172         char **text;                                                    \
 173         text = probe_action_text;                                       \
 174         CAM_DEBUG((softc)->periph->path, CAM_DEBUG_PROBE,               \
 175             ("Probe %s to %s\n", text[(softc)->action],                 \
 176             text[(newaction)]));                                        \
 177         (softc)->action = (newaction);                                  \
 178 } while(0)
 179
 180 typedef enum {
 181         PROBE_INQUIRY_CKSUM     = 0x01,
 182         PROBE_SERIAL_CKSUM      = 0x02,
 183         PROBE_NO_ANNOUNCE       = 0x04,
 184         PROBE_EXTLUN            = 0x08
 185 } probe_flags;
 186
 187 typedef struct {
 188         TAILQ_HEAD(, ccb_hdr) request_ccbs;
 189         probe_action    action;
 190         union ccb       saved_ccb;
 191         probe_flags     flags;
 192         MD5_CTX         context;
 193         u_int8_t        digest[16];
 194         struct cam_periph *periph;
 195 } probe_softc;
 196
 197 static const char quantum[] = "QUANTUM";
 198 static const char sony[] = "SONY";
 199 static const char west_digital[] = "WDIGTL";
 200 static const char samsung[] = "SAMSUNG";
 201 static const char seagate[] = "SEAGATE";
 202 static const char microp[] = "MICROP";
 203
 204 static struct scsi_quirk_entry scsi_quirk_table[] =
 205 {
 206         {
 207                 /* Reports QUEUE FULL for temporary resource shortages */
 208                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
 209                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 210         },
 211         {
 212                 /* Reports QUEUE FULL for temporary resource shortages */
 213                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
 214                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 215         },
 216         {
 217                 /* Reports QUEUE FULL for temporary resource shortages */
 218                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
 219                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 220         },
 221         {
 222                 /* Broken tagged queuing drive */
 223                 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
 224                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 225         },
 226         {
 227                 /* Broken tagged queuing drive */
 228                 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
 229                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 230         },
 231         {
 232                 /* Broken tagged queuing drive */
 233                 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
 234                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 235         },
 236         {
 237                 /*
 238                  * Unfortunately, the Quantum Atlas III has the same
 239                  * problem as the Atlas II drives above.
 240                  * Reported by: "Johan Granlund" <johan@granlund.nu>
 241                  *
 242                  * For future reference, the drive with the problem was:
 243                  * QUANTUM QM39100TD-SW N1B0
 244                  *
 245                  * It's possible that Quantum will fix the problem in later
 246                  * firmware revisions.  If that happens, the quirk entry
 247                  * will need to be made specific to the firmware revisions
 248                  * with the problem.
 249                  *
 250                  */
 251                 /* Reports QUEUE FULL for temporary resource shortages */
 252                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
 253                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 254         },
 255         {
 256                 /*
 257                  * 18 Gig Atlas III, same problem as the 9G version.
 258                  * Reported by: Andre Albsmeier
 259                  *              <andre.albsmeier@mchp.siemens.de>
 260                  *
 261                  * For future reference, the drive with the problem was:
 262                  * QUANTUM QM318000TD-S N491
 263                  */
 264                 /* Reports QUEUE FULL for temporary resource shortages */
 265                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
 266                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 267         },
 268         {
 269                 /*
 270                  * Broken tagged queuing drive
 271                  * Reported by: Bret Ford <bford@uop.cs.uop.edu>
 272                  *         and: Martin Renters <martin@tdc.on.ca>
 273                  */
 274                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
 275                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 276         },
 277                 /*
 278                  * The Seagate Medalist Pro drives have very poor write
 279                  * performance with anything more than 2 tags.
 280                  *
 281                  * Reported by:  Paul van der Zwan <paulz@trantor.xs4all.nl>
 282                  * Drive:  <SEAGATE ST36530N 1444>
 283                  *
 284                  * Reported by:  Jeremy Lea <reg@shale.csir.co.za>
 285                  * Drive:  <SEAGATE ST34520W 1281>
 286                  *
 287                  * No one has actually reported that the 9G version
 288                  * (ST39140*) of the Medalist Pro has the same problem, but
 289                  * we're assuming that it does because the 4G and 6.5G
 290                  * versions of the drive are broken.
 291                  */
 292         {
 293                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
 294                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 295         },
 296         {
 297                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
 298                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 299         },
 300         {
 301                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
 302                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 303         },
 304         {
 305                 /*
 306                  * Experiences command timeouts under load with a
 307                  * tag count higher than 55.
 308                  */
 309                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST3146855LW", "*"},
 310                 /*quirks*/0, /*mintags*/2, /*maxtags*/55
 311         },
 312         {
 313                 /*
 314                  * Slow when tagged queueing is enabled.  Write performance
 315                  * steadily drops off with more and more concurrent
 316                  * transactions.  Best sequential write performance with
 317                  * tagged queueing turned off and write caching turned on.
 318                  *
 319                  * PR:  kern/10398
 320                  * Submitted by:  Hideaki Okada <hokada@isl.melco.co.jp>
 321                  * Drive:  DCAS-34330 w/ "S65A" firmware.
 322                  *
 323                  * The drive with the problem had the "S65A" firmware
 324                  * revision, and has also been reported (by Stephen J.
 325                  * Roznowski <sjr@home.net>) for a drive with the "S61A"
 326                  * firmware revision.
 327                  *
 328                  * Although no one has reported problems with the 2 gig
 329                  * version of the DCAS drive, the assumption is that it
 330                  * has the same problems as the 4 gig version.  Therefore
 331                  * this quirk entries disables tagged queueing for all
 332                  * DCAS drives.
 333                  */
 334                 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
 335                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 336         },
 337         {
 338                 /* Broken tagged queuing drive */
 339                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
 340                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 341         },
 342         {
 343                 /* Broken tagged queuing drive */
 344                 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
 345                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 346         },
 347         {
 348                 /* This does not support other than LUN 0 */
 349                 { T_DIRECT, SIP_MEDIA_FIXED, "VMware*", "*", "*" },
 350                 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
 351         },
 352         {
 353                 /*
 354                  * Broken tagged queuing drive.
 355                  * Submitted by:
 356                  * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
 357                  * in PR kern/9535
 358                  */
 359                 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
 360                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 361         },
 362         {
 363                 /*
 364                  * Slow when tagged queueing is enabled. (1.5MB/sec versus
 365                  * 8MB/sec.)
 366                  * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
 367                  * Best performance with these drives is achieved with
 368                  * tagged queueing turned off, and write caching turned on.
 369                  */
 370                 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
 371                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 372         },
 373         {
 374                 /*
 375                  * Slow when tagged queueing is enabled. (1.5MB/sec versus
 376                  * 8MB/sec.)
 377                  * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
 378                  * Best performance with these drives is achieved with
 379                  * tagged queueing turned off, and write caching turned on.
 380                  */
 381                 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
 382                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 383         },
 384         {
 385                 /*
 386                  * Doesn't handle queue full condition correctly,
 387                  * so we need to limit maxtags to what the device
 388                  * can handle instead of determining this automatically.
 389                  */
 390                 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
 391                 /*quirks*/0, /*mintags*/2, /*maxtags*/32
 392         },
 393         {
 394                 /* Really only one LUN */
 395                 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
 396                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 397         },
 398         {
 399                 /* I can't believe we need a quirk for DPT volumes. */
 400                 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
 401                 CAM_QUIRK_NOLUNS,
 402                 /*mintags*/0, /*maxtags*/255
 403         },
 404         {
 405                 /*
 406                  * Many Sony CDROM drives don't like multi-LUN probing.
 407                  */
 408                 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
 409                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 410         },
 411         {
 412                 /*
 413                  * This drive doesn't like multiple LUN probing.
 414                  * Submitted by:  Parag Patel <parag@cgt.com>
 415                  */
 416                 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R   CDU9*", "*" },
 417                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 418         },
 419         {
 420                 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
 421                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 422         },
 423         {
 424                 /*
 425                  * The 8200 doesn't like multi-lun probing, and probably
 426                  * don't like serial number requests either.
 427                  */
 428                 {
 429                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
 430                         "EXB-8200*", "*"
 431                 },
 432                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 433         },
 434         {
 435                 /*
 436                  * Let's try the same as above, but for a drive that says
 437                  * it's an IPL-6860 but is actually an EXB 8200.
 438                  */
 439                 {
 440                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
 441                         "IPL-6860*", "*"
 442                 },
 443                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 444         },
 445         {
 446                 /*
 447                  * These Hitachi drives don't like multi-lun probing.
 448                  * The PR submitter has a DK319H, but says that the Linux
 449                  * kernel has a similar work-around for the DK312 and DK314,
 450                  * so all DK31* drives are quirked here.
 451                  * PR:            misc/18793
 452                  * Submitted by:  Paul Haddad <paul@pth.com>
 453                  */
 454                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
 455                 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
 456         },
 457         {
 458                 /*
 459                  * The Hitachi CJ series with J8A8 firmware apparantly has
 460                  * problems with tagged commands.
 461                  * PR: 23536
 462                  * Reported by: amagai@nue.org
 463                  */
 464                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
 465                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 466         },
 467         {
 468                 /*
 469                  * These are the large storage arrays.
 470                  * Submitted by:  William Carrel <william.carrel@infospace.com>
 471                  */
 472                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
 473                 CAM_QUIRK_HILUNS, 2, 1024
 474         },
 475         {
 476                 /*
 477                  * This old revision of the TDC3600 is also SCSI-1, and
 478                  * hangs upon serial number probing.
 479                  */
 480                 {
 481                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
 482                         " TDC 3600", "U07:"
 483                 },
 484                 CAM_QUIRK_NOVPDS, /*mintags*/0, /*maxtags*/0
 485         },
 486         {
 487                 /*
 488                  * Would repond to all LUNs if asked for.
 489                  */
 490                 {
 491                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
 492                         "CP150", "*"
 493                 },
 494                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 495         },
 496         {
 497                 /*
 498                  * Would repond to all LUNs if asked for.
 499                  */
 500                 {
 501                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
 502                         "96X2*", "*"
 503                 },
 504                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 505         },
 506         {
 507                 /* Submitted by: Matthew Dodd <winter@jurai.net> */
 508                 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
 509                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 510         },
 511         {
 512                 /* Submitted by: Matthew Dodd <winter@jurai.net> */
 513                 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
 514                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 515         },
 516         {
 517                 /* TeraSolutions special settings for TRC-22 RAID */
 518                 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
 519                   /*quirks*/0, /*mintags*/55, /*maxtags*/255
 520         },
 521         {
 522                 /* Veritas Storage Appliance */
 523                 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
 524                   CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
 525         },
 526         {
 527                 /*
 528                  * Would respond to all LUNs.  Device type and removable
 529                  * flag are jumper-selectable.
 530                  */
 531                 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
 532                   "Tahiti 1", "*"
 533                 },
 534                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 535         },
 536         {
 537                 /* EasyRAID E5A aka. areca ARC-6010 */
 538                 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
 539                   CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
 540         },
 541         {
 542                 { T_ENCLOSURE, SIP_MEDIA_FIXED, "DP", "BACKPLANE", "*" },
 543                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 544         },
 545         {
 546                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "Garmin", "*", "*" },
 547                 CAM_QUIRK_NORPTLUNS, /*mintags*/2, /*maxtags*/255
 548         },
 549         {
 550                 /* Default tagged queuing parameters for all devices */
 551                 {
 552                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 553                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 554                 },
 555                 /*quirks*/0, /*mintags*/2, /*maxtags*/255
 556         },
 557 };
 558
 559 static const int scsi_quirk_table_size =
 560         sizeof(scsi_quirk_table) / sizeof(*scsi_quirk_table);
 561
 562 static cam_status       proberegister(struct cam_periph *periph,
 563                                       void *arg);
 564 static void      probeschedule(struct cam_periph *probe_periph);
 565 static void      probestart(struct cam_periph *periph, union ccb *start_ccb);
 566 static void      proberequestdefaultnegotiation(struct cam_periph *periph);
 567 static int       proberequestbackoff(struct cam_periph *periph,
 568                                      struct cam_ed *device);
 569 static void      probedone(struct cam_periph *periph, union ccb *done_ccb);
 570 static void      probe_purge_old(struct cam_path *path,
 571                                  struct scsi_report_luns_data *new,
 572                                  probe_flags flags);
 573 static void      probecleanup(struct cam_periph *periph);
 574 static void      scsi_find_quirk(struct cam_ed *device);
 575 static void      scsi_scan_bus(struct cam_periph *periph, union ccb *ccb);
 576 static void      scsi_scan_lun(struct cam_periph *periph,
 577                                struct cam_path *path, cam_flags flags,
 578                                union ccb *ccb);
 579 static void      xptscandone(struct cam_periph *periph, union ccb *done_ccb);
 580 static struct cam_ed *
 581                  scsi_alloc_device(struct cam_eb *bus, struct cam_et *target,
 582                                    lun_id_t lun_id);
 583 static void      scsi_devise_transport(struct cam_path *path);
 584 static void      scsi_set_transfer_settings(struct ccb_trans_settings *cts,
 585                                             struct cam_path *path,
 586                                             int async_update);
 587 static void      scsi_toggle_tags(struct cam_path *path);
 588 static void      scsi_dev_async(u_int32_t async_code,
 589                                 struct cam_eb *bus,
 590                                 struct cam_et *target,
 591                                 struct cam_ed *device,
 592                                 void *async_arg);
 593 static void      scsi_action(union ccb *start_ccb);
 594 static void      scsi_announce_periph(struct cam_periph *periph);
 595
 596 static struct xpt_xport scsi_xport = {
 597         .alloc_device = scsi_alloc_device,
 598         .action = scsi_action,
 599         .async = scsi_dev_async,
 600         .announce = scsi_announce_periph,
 601 };
 602
 603 struct xpt_xport *
 604 scsi_get_xport(void)
 605 {
 606         return (&scsi_xport);
 607 }
 608
 609 static void
 610 probe_periph_init()
 611 {
 612 }
 613
 614 static cam_status
 615 proberegister(struct cam_periph *periph, void *arg)
 616 {
 617         union ccb *request_ccb; /* CCB representing the probe request */
 618         cam_status status;
 619         probe_softc *softc;
 620
 621         request_ccb = (union ccb *)arg;
 622         if (request_ccb == NULL) {
 623                 printf("proberegister: no probe CCB, "
 624                        "can't register device\n");
 625                 return(CAM_REQ_CMP_ERR);
 626         }
 627
 628         softc = (probe_softc *)malloc(sizeof(*softc), M_CAMXPT, M_NOWAIT);
 629
 630         if (softc == NULL) {
 631                 printf("proberegister: Unable to probe new device. "
 632                        "Unable to allocate softc\n");
 633                 return(CAM_REQ_CMP_ERR);
 634         }
 635         TAILQ_INIT(&softc->request_ccbs);
 636         TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
 637                           periph_links.tqe);
 638         softc->flags = 0;
 639         periph->softc = softc;
 640         softc->periph = periph;
 641         softc->action = PROBE_INVALID;
 642         status = cam_periph_acquire(periph);
 643         if (status != CAM_REQ_CMP) {
 644                 return (status);
 645         }
 646         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe started\n"));
 647         scsi_devise_transport(periph->path);
 648
 649         /*
 650          * Ensure we've waited at least a bus settle
 651          * delay before attempting to probe the device.
 652          * For HBAs that don't do bus resets, this won't make a difference.
 653          */
 654         cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
 655                                       scsi_delay);
 656         probeschedule(periph);
 657         return(CAM_REQ_CMP);
 658 }
 659
 660 static void
 661 probeschedule(struct cam_periph *periph)
 662 {
 663         struct ccb_pathinq cpi;
 664         union ccb *ccb;
 665         probe_softc *softc;
 666
 667         softc = (probe_softc *)periph->softc;
 668         ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
 669
 670         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
 671         cpi.ccb_h.func_code = XPT_PATH_INQ;
 672         xpt_action((union ccb *)&cpi);
 673
 674         /*
 675          * If a device has gone away and another device, or the same one,
 676          * is back in the same place, it should have a unit attention
 677          * condition pending.  It will not report the unit attention in
 678          * response to an inquiry, which may leave invalid transfer
 679          * negotiations in effect.  The TUR will reveal the unit attention
 680          * condition.  Only send the TUR for lun 0, since some devices
 681          * will get confused by commands other than inquiry to non-existent
 682          * luns.  If you think a device has gone away start your scan from
 683          * lun 0.  This will insure that any bogus transfer settings are
 684          * invalidated.
 685          *
 686          * If we haven't seen the device before and the controller supports
 687          * some kind of transfer negotiation, negotiate with the first
 688          * sent command if no bus reset was performed at startup.  This
 689          * ensures that the device is not confused by transfer negotiation
 690          * settings left over by loader or BIOS action.
 691          */
 692         if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 693          && (ccb->ccb_h.target_lun == 0)) {
 694                 PROBE_SET_ACTION(softc, PROBE_TUR);
 695         } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
 696               && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
 697                 proberequestdefaultnegotiation(periph);
 698                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
 699         } else {
 700                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
 701         }
 702
 703         if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
 704                 softc->flags |= PROBE_NO_ANNOUNCE;
 705         else
 706                 softc->flags &= ~PROBE_NO_ANNOUNCE;
 707
 708         if (cpi.hba_misc & PIM_EXTLUNS)
 709                 softc->flags |= PROBE_EXTLUN;
 710         else
 711                 softc->flags &= ~PROBE_EXTLUN;
 712
 713         xpt_schedule(periph, CAM_PRIORITY_XPT);
 714 }
 715
 716 static void
 717 probestart(struct cam_periph *periph, union ccb *start_ccb)
 718 {
 719         /* Probe the device that our peripheral driver points to */
 720         struct ccb_scsiio *csio;
 721         probe_softc *softc;
 722
 723         CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
 724
 725         softc = (probe_softc *)periph->softc;
 726         csio = &start_ccb->csio;
 727 again:
 728
 729         switch (softc->action) {
 730         case PROBE_TUR:
 731         case PROBE_TUR_FOR_NEGOTIATION:
 732         case PROBE_DV_EXIT:
 733         {
 734                 scsi_test_unit_ready(csio,
 735                                      /*retries*/4,
 736                                      probedone,
 737                                      MSG_SIMPLE_Q_TAG,
 738                                      SSD_FULL_SIZE,
 739                                      /*timeout*/60000);
 740                 break;
 741         }
 742         case PROBE_INQUIRY:
 743         case PROBE_FULL_INQUIRY:
 744         case PROBE_INQUIRY_BASIC_DV1:
 745         case PROBE_INQUIRY_BASIC_DV2:
 746         {
 747                 u_int inquiry_len;
 748                 struct scsi_inquiry_data *inq_buf;
 749
 750                 inq_buf = &periph->path->device->inq_data;
 751
 752                 /*
 753                  * If the device is currently configured, we calculate an
 754                  * MD5 checksum of the inquiry data, and if the serial number
 755                  * length is greater than 0, add the serial number data
 756                  * into the checksum as well.  Once the inquiry and the
 757                  * serial number check finish, we attempt to figure out
 758                  * whether we still have the same device.
 759                  */
 760                 if (((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 761                  && ((softc->flags & PROBE_INQUIRY_CKSUM) == 0)) {
 762
 763                         MD5Init(&softc->context);
 764                         MD5Update(&softc->context, (unsigned char *)inq_buf,
 765                                   sizeof(struct scsi_inquiry_data));
 766                         softc->flags |= PROBE_INQUIRY_CKSUM;
 767                         if (periph->path->device->serial_num_len > 0) {
 768                                 MD5Update(&softc->context,
 769                                           periph->path->device->serial_num,
 770                                           periph->path->device->serial_num_len);
 771                                 softc->flags |= PROBE_SERIAL_CKSUM;
 772                         }
 773                         MD5Final(softc->digest, &softc->context);
 774                 }
 775
 776                 if (softc->action == PROBE_INQUIRY)
 777                         inquiry_len = SHORT_INQUIRY_LENGTH;
 778                 else
 779                         inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf);
 780
 781                 /*
 782                  * Some parallel SCSI devices fail to send an
 783                  * ignore wide residue message when dealing with
 784                  * odd length inquiry requests.  Round up to be
 785                  * safe.
 786                  */
 787                 inquiry_len = roundup2(inquiry_len, 2);
 788
 789                 if (softc->action == PROBE_INQUIRY_BASIC_DV1
 790                  || softc->action == PROBE_INQUIRY_BASIC_DV2) {
 791                         inq_buf = malloc(inquiry_len, M_CAMXPT, M_NOWAIT);
 792                 }
 793                 if (inq_buf == NULL) {
 794                         xpt_print(periph->path, "malloc failure- skipping Basic"
 795                             "Domain Validation\n");
 796                         PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
 797                         scsi_test_unit_ready(csio,
 798                                              /*retries*/4,
 799                                              probedone,
 800                                              MSG_SIMPLE_Q_TAG,
 801                                              SSD_FULL_SIZE,
 802                                              /*timeout*/60000);
 803                         break;
 804                 }
 805                 scsi_inquiry(csio,
 806                              /*retries*/4,
 807                              probedone,
 808                              MSG_SIMPLE_Q_TAG,
 809                              (u_int8_t *)inq_buf,
 810                              inquiry_len,
 811                              /*evpd*/FALSE,
 812                              /*page_code*/0,
 813                              SSD_MIN_SIZE,
 814                              /*timeout*/60 * 1000);
 815                 break;
 816         }
 817         case PROBE_REPORT_LUNS:
 818         {
 819                 void *rp;
 820
 821                 rp = malloc(periph->path->target->rpl_size,
 822                     M_CAMXPT, M_NOWAIT | M_ZERO);
 823                 if (rp == NULL) {
 824                         struct scsi_inquiry_data *inq_buf;
 825                         inq_buf = &periph->path->device->inq_data;
 826                         xpt_print(periph->path,
 827                             "Unable to alloc report luns storage\n");
 828                         if (INQ_DATA_TQ_ENABLED(inq_buf))
 829                                 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
 830                         else
 831                                 PROBE_SET_ACTION(softc,
 832                                     PROBE_SUPPORTED_VPD_LIST);
 833                         goto again;
 834                 }
 835                 scsi_report_luns(csio, 5, probedone, MSG_SIMPLE_Q_TAG,
 836                     RPL_REPORT_DEFAULT, rp, periph->path->target->rpl_size,
 837                     SSD_FULL_SIZE, 60000); break;
 838                 break;
 839         }
 840         case PROBE_MODE_SENSE:
 841         {
 842                 void  *mode_buf;
 843                 int    mode_buf_len;
 844
 845                 mode_buf_len = sizeof(struct scsi_mode_header_6)
 846                              + sizeof(struct scsi_mode_blk_desc)
 847                              + sizeof(struct scsi_control_page);
 848                 mode_buf = malloc(mode_buf_len, M_CAMXPT, M_NOWAIT);
 849                 if (mode_buf != NULL) {
 850                         scsi_mode_sense(csio,
 851                                         /*retries*/4,
 852                                         probedone,
 853                                         MSG_SIMPLE_Q_TAG,
 854                                         /*dbd*/FALSE,
 855                                         SMS_PAGE_CTRL_CURRENT,
 856                                         SMS_CONTROL_MODE_PAGE,
 857                                         mode_buf,
 858                                         mode_buf_len,
 859                                         SSD_FULL_SIZE,
 860                                         /*timeout*/60000);
 861                         break;
 862                 }
 863                 xpt_print(periph->path, "Unable to mode sense control page - "
 864                     "malloc failure\n");
 865                 PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
 866         }
 867         /* FALLTHROUGH */
 868         case PROBE_SUPPORTED_VPD_LIST:
 869         {
 870                 struct scsi_vpd_supported_page_list *vpd_list;
 871                 struct cam_ed *device;
 872
 873                 vpd_list = NULL;
 874                 device = periph->path->device;
 875
 876                 if ((SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOVPDS) == 0)
 877                         vpd_list = malloc(sizeof(*vpd_list), M_CAMXPT,
 878                             M_NOWAIT | M_ZERO);
 879
 880                 if (vpd_list != NULL) {
 881                         scsi_inquiry(csio,
 882                                      /*retries*/4,
 883                                      probedone,
 884                                      MSG_SIMPLE_Q_TAG,
 885                                      (u_int8_t *)vpd_list,
 886                                      sizeof(*vpd_list),
 887                                      /*evpd*/TRUE,
 888                                      SVPD_SUPPORTED_PAGE_LIST,
 889                                      SSD_MIN_SIZE,
 890                                      /*timeout*/60 * 1000);
 891                         break;
 892                 }
 893 done:
 894                 /*
 895                  * We'll have to do without, let our probedone
 896                  * routine finish up for us.
 897                  */
 898                 start_ccb->csio.data_ptr = NULL;
 899                 cam_freeze_devq(periph->path);
 900                 cam_periph_doacquire(periph);
 901                 probedone(periph, start_ccb);
 902                 return;
 903         }
 904         case PROBE_DEVICE_ID:
 905         {
 906                 struct scsi_vpd_device_id *devid;
 907
 908                 devid = NULL;
 909                 if (scsi_vpd_supported_page(periph, SVPD_DEVICE_ID))
 910                         devid = malloc(SVPD_DEVICE_ID_MAX_SIZE, M_CAMXPT,
 911                             M_NOWAIT | M_ZERO);
 912
 913                 if (devid != NULL) {
 914                         scsi_inquiry(csio,
 915                                      /*retries*/4,
 916                                      probedone,
 917                                      MSG_SIMPLE_Q_TAG,
 918                                      (uint8_t *)devid,
 919                                      SVPD_DEVICE_ID_MAX_SIZE,
 920                                      /*evpd*/TRUE,
 921                                      SVPD_DEVICE_ID,
 922                                      SSD_MIN_SIZE,
 923                                      /*timeout*/60 * 1000);
 924                         break;
 925                 }
 926                 goto done;
 927         }
 928         case PROBE_EXTENDED_INQUIRY:
 929         {
 930                 struct scsi_vpd_extended_inquiry_data *ext_inq;
 931
 932                 ext_inq = NULL;
 933                 if (scsi_vpd_supported_page(periph, SVPD_EXTENDED_INQUIRY_DATA))
 934                         ext_inq = malloc(sizeof(*ext_inq), M_CAMXPT,
 935                             M_NOWAIT | M_ZERO);
 936
 937                 if (ext_inq != NULL) {
 938                         scsi_inquiry(csio,
 939                                      /*retries*/4,
 940                                      probedone,
 941                                      MSG_SIMPLE_Q_TAG,
 942                                      (uint8_t *)ext_inq,
 943                                      sizeof(*ext_inq),
 944                                      /*evpd*/TRUE,
 945                                      SVPD_EXTENDED_INQUIRY_DATA,
 946                                      SSD_MIN_SIZE,
 947                                      /*timeout*/60 * 1000);
 948                         break;
 949                 }
 950                 /*
 951                  * We'll have to do without, let our probedone
 952                  * routine finish up for us.
 953                  */
 954                 goto done;
 955         }
 956         case PROBE_SERIAL_NUM:
 957         {
 958                 struct scsi_vpd_unit_serial_number *serial_buf;
 959                 struct cam_ed* device;
 960
 961                 serial_buf = NULL;
 962                 device = periph->path->device;
 963                 if (device->serial_num != NULL) {
 964                         free(device->serial_num, M_CAMXPT);
 965                         device->serial_num = NULL;
 966                         device->serial_num_len = 0;
 967                 }
 968
 969                 if (scsi_vpd_supported_page(periph, SVPD_UNIT_SERIAL_NUMBER))
 970                         serial_buf = (struct scsi_vpd_unit_serial_number *)
 971                                 malloc(sizeof(*serial_buf), M_CAMXPT,
 972                                     M_NOWAIT|M_ZERO);
 973
 974                 if (serial_buf != NULL) {
 975                         scsi_inquiry(csio,
 976                                      /*retries*/4,
 977                                      probedone,
 978                                      MSG_SIMPLE_Q_TAG,
 979                                      (u_int8_t *)serial_buf,
 980                                      sizeof(*serial_buf),
 981                                      /*evpd*/TRUE,
 982                                      SVPD_UNIT_SERIAL_NUMBER,
 983                                      SSD_MIN_SIZE,
 984                                      /*timeout*/60 * 1000);
 985                         break;
 986                 }
 987                 goto done;
 988         }
 989         default:
 990                 panic("probestart: invalid action state 0x%x\n", softc->action);
 991         }
 992         start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
 993         cam_periph_doacquire(periph);
 994         xpt_action(start_ccb);
 995 }
 996
 997 static void
 998 proberequestdefaultnegotiation(struct cam_periph *periph)
 999 {
1000         struct ccb_trans_settings cts;
1001
1002         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
1003         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1004         cts.type = CTS_TYPE_USER_SETTINGS;
1005         xpt_action((union ccb *)&cts);
1006         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1007                 return;
1008         }
1009         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1010         cts.type = CTS_TYPE_CURRENT_SETTINGS;
1011         xpt_action((union ccb *)&cts);
1012 }
1013
1014 /*
1015  * Backoff Negotiation Code- only pertinent for SPI devices.
1016  */
1017 static int
1018 proberequestbackoff(struct cam_periph *periph, struct cam_ed *device)
1019 {
1020         struct ccb_trans_settings cts;
1021         struct ccb_trans_settings_spi *spi;
1022
1023         memset(&cts, 0, sizeof (cts));
1024         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
1025         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1026         cts.type = CTS_TYPE_CURRENT_SETTINGS;
1027         xpt_action((union ccb *)&cts);
1028         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1029                 if (bootverbose) {
1030                         xpt_print(periph->path,
1031                             "failed to get current device settings\n");
1032                 }
1033                 return (0);
1034         }
1035         if (cts.transport != XPORT_SPI) {
1036                 if (bootverbose) {
1037                         xpt_print(periph->path, "not SPI transport\n");
1038                 }
1039                 return (0);
1040         }
1041         spi = &cts.xport_specific.spi;
1042
1043         /*
1044          * We cannot renegotiate sync rate if we don't have one.
1045          */
1046         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
1047                 if (bootverbose) {
1048                         xpt_print(periph->path, "no sync rate known\n");
1049                 }
1050                 return (0);
1051         }
1052
1053         /*
1054          * We'll assert that we don't have to touch PPR options- the
1055          * SIM will see what we do with period and offset and adjust
1056          * the PPR options as appropriate.
1057          */
1058
1059         /*
1060          * A sync rate with unknown or zero offset is nonsensical.
1061          * A sync period of zero means Async.
1062          */
1063         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0
1064          || spi->sync_offset == 0 || spi->sync_period == 0) {
1065                 if (bootverbose) {
1066                         xpt_print(periph->path, "no sync rate available\n");
1067                 }
1068                 return (0);
1069         }
1070
1071         if (device->flags & CAM_DEV_DV_HIT_BOTTOM) {
1072                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1073                     ("hit async: giving up on DV\n"));
1074                 return (0);
1075         }
1076
1077
1078         /*
1079          * Jump sync_period up by one, but stop at 5MHz and fall back to Async.
1080          * We don't try to remember 'last' settings to see if the SIM actually
1081          * gets into the speed we want to set. We check on the SIM telling
1082          * us that a requested speed is bad, but otherwise don't try and
1083          * check the speed due to the asynchronous and handshake nature
1084          * of speed setting.
1085          */
1086         spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET;
1087         for (;;) {
1088                 spi->sync_period++;
1089                 if (spi->sync_period >= 0xf) {
1090                         spi->sync_period = 0;
1091                         spi->sync_offset = 0;
1092                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1093                             ("setting to async for DV\n"));
1094                         /*
1095                          * Once we hit async, we don't want to try
1096                          * any more settings.
1097                          */
1098                         device->flags |= CAM_DEV_DV_HIT_BOTTOM;
1099                 } else if (bootverbose) {
1100                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1101                             ("DV: period 0x%x\n", spi->sync_period));
1102                         printf("setting period to 0x%x\n", spi->sync_period);
1103                 }
1104                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1105                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1106                 xpt_action((union ccb *)&cts);
1107                 if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1108                         break;
1109                 }
1110                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1111                     ("DV: failed to set period 0x%x\n", spi->sync_period));
1112                 if (spi->sync_period == 0) {
1113                         return (0);
1114                 }
1115         }
1116         return (1);
1117 }
1118
1119 #define CCB_COMPLETED_OK(ccb) (((ccb).status & CAM_STATUS_MASK) == CAM_REQ_CMP)
1120
1121 static void
1122 probedone(struct cam_periph *periph, union ccb *done_ccb)
1123 {
1124         probe_softc *softc;
1125         struct cam_path *path;
1126         struct scsi_inquiry_data *inq_buf;
1127         u_int32_t  priority;
1128
1129         CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
1130
1131         softc = (probe_softc *)periph->softc;
1132         path = done_ccb->ccb_h.path;
1133         priority = done_ccb->ccb_h.pinfo.priority;
1134
1135         switch (softc->action) {
1136         case PROBE_TUR:
1137         {
1138                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1139
1140                         if (cam_periph_error(done_ccb, 0,
1141                                              SF_NO_PRINT, NULL) == ERESTART) {
1142 outr:
1143                                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1144                                 cam_release_devq(path, 0, 0, 0, FALSE);
1145                                 return;
1146                         }
1147                         else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1148                                 /* Don't wedge the queue */
1149                                 xpt_release_devq(done_ccb->ccb_h.path,
1150                                                  /*count*/1,
1151                                                  /*run_queue*/TRUE);
1152                 }
1153                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
1154                 xpt_release_ccb(done_ccb);
1155                 xpt_schedule(periph, priority);
1156 out:
1157                 /* Drop freeze taken due to CAM_DEV_QFREEZE and release. */
1158                 cam_release_devq(path, 0, 0, 0, FALSE);
1159                 cam_periph_release_locked(periph);
1160                 return;
1161         }
1162         case PROBE_INQUIRY:
1163         case PROBE_FULL_INQUIRY:
1164         {
1165                 if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
1166                         u_int8_t periph_qual;
1167
1168                         path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
1169                         scsi_find_quirk(path->device);
1170                         inq_buf = &path->device->inq_data;
1171
1172                         periph_qual = SID_QUAL(inq_buf);
1173
1174                         if (periph_qual == SID_QUAL_LU_CONNECTED ||
1175                             periph_qual == SID_QUAL_LU_OFFLINE) {
1176                                 u_int8_t len;
1177
1178                                 /*
1179                                  * We conservatively request only
1180                                  * SHORT_INQUIRY_LEN bytes of inquiry
1181                                  * information during our first try
1182                                  * at sending an INQUIRY. If the device
1183                                  * has more information to give,
1184                                  * perform a second request specifying
1185                                  * the amount of information the device
1186                                  * is willing to give.
1187                                  */
1188                                 len = inq_buf->additional_length
1189                                     + offsetof(struct scsi_inquiry_data,
1190                                                additional_length) + 1;
1191                                 if (softc->action == PROBE_INQUIRY
1192                                     && len > SHORT_INQUIRY_LENGTH) {
1193                                         PROBE_SET_ACTION(softc, PROBE_FULL_INQUIRY);
1194                                         xpt_release_ccb(done_ccb);
1195                                         xpt_schedule(periph, priority);
1196                                         goto out;
1197                                 }
1198
1199                                 scsi_devise_transport(path);
1200
1201                                 if (path->device->lun_id == 0 &&
1202                                     SID_ANSI_REV(inq_buf) > SCSI_REV_SPC2 &&
1203                                     (SCSI_QUIRK(path->device)->quirks &
1204                                      CAM_QUIRK_NORPTLUNS) == 0) {
1205                                         PROBE_SET_ACTION(softc,
1206                                             PROBE_REPORT_LUNS);
1207                                         /*
1208                                          * Start with room for *one* lun.
1209                                          */
1210                                         periph->path->target->rpl_size = 16;
1211                                 } else if (INQ_DATA_TQ_ENABLED(inq_buf))
1212                                         PROBE_SET_ACTION(softc,
1213                                             PROBE_MODE_SENSE);
1214                                 else
1215                                         PROBE_SET_ACTION(softc,
1216                                             PROBE_SUPPORTED_VPD_LIST);
1217
1218                                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1219                                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1220                                         xpt_acquire_device(path->device);
1221                                 }
1222                                 xpt_release_ccb(done_ccb);
1223                                 xpt_schedule(periph, priority);
1224                                 goto out;
1225                         } else if (path->device->lun_id == 0 &&
1226                             SID_ANSI_REV(inq_buf) >= SCSI_REV_SPC2 &&
1227                             (SCSI_QUIRK(path->device)->quirks &
1228                              CAM_QUIRK_NORPTLUNS) == 0) {
1229                                 PROBE_SET_ACTION(softc, PROBE_REPORT_LUNS);
1230                                 periph->path->target->rpl_size = 16;
1231                                 xpt_release_ccb(done_ccb);
1232                                 xpt_schedule(periph, priority);
1233                                 goto out;
1234                         }
1235                 } else if (cam_periph_error(done_ccb, 0,
1236                                             done_ccb->ccb_h.target_lun > 0
1237                                             ? SF_RETRY_UA|SF_QUIET_IR
1238                                             : SF_RETRY_UA,
1239                                             &softc->saved_ccb) == ERESTART) {
1240                         goto outr;
1241                 } else {
1242                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1243                                 /* Don't wedge the queue */
1244                                 xpt_release_devq(done_ccb->ccb_h.path,
1245                                     /*count*/1, /*run_queue*/TRUE);
1246                         }
1247                         path->device->flags &= ~CAM_DEV_INQUIRY_DATA_VALID;
1248                 }
1249                 /*
1250                  * If we get to this point, we got an error status back
1251                  * from the inquiry and the error status doesn't require
1252                  * automatically retrying the command.  Therefore, the
1253                  * inquiry failed.  If we had inquiry information before
1254                  * for this device, but this latest inquiry command failed,
1255                  * the device has probably gone away.  If this device isn't
1256                  * already marked unconfigured, notify the peripheral
1257                  * drivers that this device is no more.
1258                  */
1259                 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
1260                         /* Send the async notification. */
1261                         xpt_async(AC_LOST_DEVICE, path, NULL);
1262                 PROBE_SET_ACTION(softc, PROBE_INVALID);
1263
1264                 xpt_release_ccb(done_ccb);
1265                 break;
1266         }
1267         case PROBE_REPORT_LUNS:
1268         {
1269                 struct ccb_scsiio *csio;
1270                 struct scsi_report_luns_data *lp;
1271                 u_int nlun, maxlun;
1272
1273                 csio = &done_ccb->csio;
1274
1275                 lp = (struct scsi_report_luns_data *)csio->data_ptr;
1276                 nlun = scsi_4btoul(lp->length) / 8;
1277                 maxlun = (csio->dxfer_len / 8) - 1;
1278
1279                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1280                         if (cam_periph_error(done_ccb, 0,
1281                             done_ccb->ccb_h.target_lun > 0 ?
1282                             SF_RETRY_UA|SF_QUIET_IR : SF_RETRY_UA,
1283                             &softc->saved_ccb) == ERESTART) {
1284                                 goto outr;
1285                         }
1286                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1287                                 xpt_release_devq(done_ccb->ccb_h.path, 1,
1288                                     TRUE);
1289                         }
1290                         free(lp, M_CAMXPT);
1291                         lp = NULL;
1292                 } else if (nlun > maxlun) {
1293                         /*
1294                          * Reallocate and retry to cover all luns
1295                          */
1296                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1297                             ("Probe: reallocating REPORT_LUNS for %u luns\n",
1298                              nlun));
1299                         free(lp, M_CAMXPT);
1300                         path->target->rpl_size = (nlun << 3) + 8;
1301                         xpt_release_ccb(done_ccb);
1302                         xpt_schedule(periph, priority);
1303                         goto out;
1304                 } else if (nlun == 0) {
1305                         /*
1306                          * If there don't appear to be any luns, bail.
1307                          */
1308                         free(lp, M_CAMXPT);
1309                         lp = NULL;
1310                 } else {
1311                         lun_id_t lun;
1312                         int idx;
1313
1314                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1315                            ("Probe: %u lun(s) reported\n", nlun));
1316
1317                         CAM_GET_LUN(lp, 0, lun);
1318                         /*
1319                          * If the first lun is not lun 0, then either there
1320                          * is no lun 0 in the list, or the list is unsorted.
1321                          */
1322                         if (lun != 0) {
1323                                 for (idx = 0; idx < nlun; idx++) {
1324                                         CAM_GET_LUN(lp, idx, lun);
1325                                         if (lun == 0) {
1326                                                 break;
1327                                         }
1328                                 }
1329                                 if (idx != nlun) {
1330                                         uint8_t tlun[8];
1331                                         memcpy(tlun,
1332                                             lp->luns[0].lundata, 8);
1333                                         memcpy(lp->luns[0].lundata,
1334                                             lp->luns[idx].lundata, 8);
1335                                         memcpy(lp->luns[idx].lundata,
1336                                             tlun, 8);
1337                                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1338                                             ("lun 0 in position %u\n", idx));
1339                                 }
1340                         }
1341                         /*
1342                          * If we have an old lun list, We can either
1343                          * retest luns that appear to have been dropped,
1344                          * or just nuke them.  We'll opt for the latter.
1345                          * This function will also install the new list
1346                          * in the target structure.
1347                          */
1348                         probe_purge_old(path, lp, softc->flags);
1349                         lp = NULL;
1350                 }
1351                 inq_buf = &path->device->inq_data;
1352                 if (path->device->flags & CAM_DEV_INQUIRY_DATA_VALID &&
1353                     (SID_QUAL(inq_buf) == SID_QUAL_LU_CONNECTED ||
1354                     SID_QUAL(inq_buf) == SID_QUAL_LU_OFFLINE)) {
1355                         if (INQ_DATA_TQ_ENABLED(inq_buf))
1356                                 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
1357                         else
1358                                 PROBE_SET_ACTION(softc,
1359                                     PROBE_SUPPORTED_VPD_LIST);
1360                         xpt_release_ccb(done_ccb);
1361                         xpt_schedule(periph, priority);
1362                         goto out;
1363                 }
1364                 if (lp) {
1365                         free(lp, M_CAMXPT);
1366                 }
1367                 PROBE_SET_ACTION(softc, PROBE_INVALID);
1368                 xpt_release_ccb(done_ccb);
1369                 break;
1370         }
1371         case PROBE_MODE_SENSE:
1372         {
1373                 struct ccb_scsiio *csio;
1374                 struct scsi_mode_header_6 *mode_hdr;
1375
1376                 csio = &done_ccb->csio;
1377                 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
1378                 if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
1379                         struct scsi_control_page *page;
1380                         u_int8_t *offset;
1381
1382                         offset = ((u_int8_t *)&mode_hdr[1])
1383                             + mode_hdr->blk_desc_len;
1384                         page = (struct scsi_control_page *)offset;
1385                         path->device->queue_flags = page->queue_flags;
1386                 } else if (cam_periph_error(done_ccb, 0,
1387                                             SF_RETRY_UA|SF_NO_PRINT,
1388                                             &softc->saved_ccb) == ERESTART) {
1389                         goto outr;
1390                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1391                         /* Don't wedge the queue */
1392                         xpt_release_devq(done_ccb->ccb_h.path,
1393                                          /*count*/1, /*run_queue*/TRUE);
1394                 }
1395                 xpt_release_ccb(done_ccb);
1396                 free(mode_hdr, M_CAMXPT);
1397                 PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
1398                 xpt_schedule(periph, priority);
1399                 goto out;
1400         }
1401         case PROBE_SUPPORTED_VPD_LIST:
1402         {
1403                 struct ccb_scsiio *csio;
1404                 struct scsi_vpd_supported_page_list *page_list;
1405
1406                 csio = &done_ccb->csio;
1407                 page_list =
1408                     (struct scsi_vpd_supported_page_list *)csio->data_ptr;
1409
1410                 if (path->device->supported_vpds != NULL) {
1411                         free(path->device->supported_vpds, M_CAMXPT);
1412                         path->device->supported_vpds = NULL;
1413                         path->device->supported_vpds_len = 0;
1414                 }
1415
1416                 if (page_list == NULL) {
1417                         /*
1418                          * Don't process the command as it was never sent
1419                          */
1420                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1421                         /* Got vpd list */
1422                         path->device->supported_vpds_len = page_list->length +
1423                             SVPD_SUPPORTED_PAGES_HDR_LEN;
1424                         path->device->supported_vpds = (uint8_t *)page_list;
1425                         xpt_release_ccb(done_ccb);
1426                         PROBE_SET_ACTION(softc, PROBE_DEVICE_ID);
1427                         xpt_schedule(periph, priority);
1428                         goto out;
1429                 } else if (cam_periph_error(done_ccb, 0,
1430                                             SF_RETRY_UA|SF_NO_PRINT,
1431                                             &softc->saved_ccb) == ERESTART) {
1432                         goto outr;
1433                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1434                         /* Don't wedge the queue */
1435                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1436                                          /*run_queue*/TRUE);
1437                 }
1438
1439                 if (page_list)
1440                         free(page_list, M_CAMXPT);
1441                 /* No VPDs available, skip to device check. */
1442                 csio->data_ptr = NULL;
1443                 goto probe_device_check;
1444         }
1445         case PROBE_DEVICE_ID:
1446         {
1447                 struct scsi_vpd_device_id *devid;
1448                 struct ccb_scsiio *csio;
1449                 uint32_t length = 0;
1450
1451                 csio = &done_ccb->csio;
1452                 devid = (struct scsi_vpd_device_id *)csio->data_ptr;
1453
1454                 /* Clean up from previous instance of this device */
1455                 if (path->device->device_id != NULL) {
1456                         path->device->device_id_len = 0;
1457                         free(path->device->device_id, M_CAMXPT);
1458                         path->device->device_id = NULL;
1459                 }
1460
1461                 if (devid == NULL) {
1462                         /* Don't process the command as it was never sent */
1463                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1464                         length = scsi_2btoul(devid->length);
1465                         if (length != 0) {
1466                                 /*
1467                                  * NB: device_id_len is actual response
1468                                  * size, not buffer size.
1469                                  */
1470                                 path->device->device_id_len = length +
1471                                     SVPD_DEVICE_ID_HDR_LEN;
1472                                 path->device->device_id = (uint8_t *)devid;
1473                         }
1474                 } else if (cam_periph_error(done_ccb, 0,
1475                                             SF_RETRY_UA,
1476                                             &softc->saved_ccb) == ERESTART) {
1477                         goto outr;
1478                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1479                         /* Don't wedge the queue */
1480                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1481                                          /*run_queue*/TRUE);
1482                 }
1483
1484                 /* Free the device id space if we don't use it */
1485                 if (devid && length == 0)
1486                         free(devid, M_CAMXPT);
1487                 xpt_release_ccb(done_ccb);
1488                 PROBE_SET_ACTION(softc, PROBE_EXTENDED_INQUIRY);
1489                 xpt_schedule(periph, priority);
1490                 goto out;
1491         }
1492         case PROBE_EXTENDED_INQUIRY: {
1493                 struct scsi_vpd_extended_inquiry_data *ext_inq;
1494                 struct ccb_scsiio *csio;
1495                 int32_t length = 0;
1496
1497                 csio = &done_ccb->csio;
1498                 ext_inq = (struct scsi_vpd_extended_inquiry_data *)
1499                     csio->data_ptr;
1500                 if (path->device->ext_inq != NULL) {
1501                         path->device->ext_inq_len = 0;
1502                         free(path->device->ext_inq, M_CAMXPT);
1503                         path->device->ext_inq = NULL;
1504                 }
1505
1506                 if (ext_inq == NULL) {
1507                         /* Don't process the command as it was never sent */
1508                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1509                         length = scsi_2btoul(ext_inq->page_length) +
1510                             __offsetof(struct scsi_vpd_extended_inquiry_data,
1511                             flags1);
1512                         length = min(length, sizeof(*ext_inq));
1513                         length -= csio->resid;
1514                         if (length > 0) {
1515                                 path->device->ext_inq_len = length;
1516                                 path->device->ext_inq = (uint8_t *)ext_inq;
1517                         }
1518                 } else if (cam_periph_error(done_ccb, 0,
1519                                             SF_RETRY_UA,
1520                                             &softc->saved_ccb) == ERESTART) {
1521                         return;
1522                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1523                         /* Don't wedge the queue */
1524                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1525                                          /*run_queue*/TRUE);
1526                 }
1527
1528                 /* Free the device id space if we don't use it */
1529                 if (ext_inq && length <= 0)
1530                         free(ext_inq, M_CAMXPT);
1531                 xpt_release_ccb(done_ccb);
1532                 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM);
1533                 xpt_schedule(periph, priority);
1534                 goto out;
1535         }
1536
1537 probe_device_check:
1538         case PROBE_SERIAL_NUM:
1539         {
1540                 struct ccb_scsiio *csio;
1541                 struct scsi_vpd_unit_serial_number *serial_buf;
1542                 u_int32_t  priority;
1543                 int changed;
1544                 int have_serialnum;
1545
1546                 changed = 1;
1547                 have_serialnum = 0;
1548                 csio = &done_ccb->csio;
1549                 priority = done_ccb->ccb_h.pinfo.priority;
1550                 serial_buf =
1551                     (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
1552
1553                 if (serial_buf == NULL) {
1554                         /*
1555                          * Don't process the command as it was never sent
1556                          */
1557                 } else if (cam_ccb_status(done_ccb) == CAM_REQ_CMP
1558                         && (serial_buf->length > 0)) {
1559
1560                         have_serialnum = 1;
1561                         path->device->serial_num =
1562                                 (u_int8_t *)malloc((serial_buf->length + 1),
1563                                                    M_CAMXPT, M_NOWAIT);
1564                         if (path->device->serial_num != NULL) {
1565                                 memcpy(path->device->serial_num,
1566                                        serial_buf->serial_num,
1567                                        serial_buf->length);
1568                                 path->device->serial_num_len =
1569                                     serial_buf->length;
1570                                 path->device->serial_num[serial_buf->length]
1571                                     = '\0';
1572                         }
1573                 } else if (cam_periph_error(done_ccb, 0,
1574                                             SF_RETRY_UA|SF_NO_PRINT,
1575                                             &softc->saved_ccb) == ERESTART) {
1576                         goto outr;
1577                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1578                         /* Don't wedge the queue */
1579                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1580                                          /*run_queue*/TRUE);
1581                 }
1582
1583                 /*
1584                  * Let's see if we have seen this device before.
1585                  */
1586                 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
1587                         MD5_CTX context;
1588                         u_int8_t digest[16];
1589
1590                         MD5Init(&context);
1591
1592                         MD5Update(&context,
1593                                   (unsigned char *)&path->device->inq_data,
1594                                   sizeof(struct scsi_inquiry_data));
1595
1596                         if (have_serialnum)
1597                                 MD5Update(&context, serial_buf->serial_num,
1598                                           serial_buf->length);
1599
1600                         MD5Final(digest, &context);
1601                         if (bcmp(softc->digest, digest, 16) == 0)
1602                                 changed = 0;
1603
1604                         /*
1605                          * XXX Do we need to do a TUR in order to ensure
1606                          *     that the device really hasn't changed???
1607                          */
1608                         if ((changed != 0)
1609                          && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
1610                                 xpt_async(AC_LOST_DEVICE, path, NULL);
1611                 }
1612                 if (serial_buf != NULL)
1613                         free(serial_buf, M_CAMXPT);
1614
1615                 if (changed != 0) {
1616                         /*
1617                          * Now that we have all the necessary
1618                          * information to safely perform transfer
1619                          * negotiations... Controllers don't perform
1620                          * any negotiation or tagged queuing until
1621                          * after the first XPT_SET_TRAN_SETTINGS ccb is
1622                          * received.  So, on a new device, just retrieve
1623                          * the user settings, and set them as the current
1624                          * settings to set the device up.
1625                          */
1626                         proberequestdefaultnegotiation(periph);
1627                         xpt_release_ccb(done_ccb);
1628
1629                         /*
1630                          * Perform a TUR to allow the controller to
1631                          * perform any necessary transfer negotiation.
1632                          */
1633                         PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
1634                         xpt_schedule(periph, priority);
1635                         goto out;
1636                 }
1637                 xpt_release_ccb(done_ccb);
1638                 break;
1639         }
1640         case PROBE_TUR_FOR_NEGOTIATION:
1641         case PROBE_DV_EXIT:
1642                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1643                         cam_periph_error(done_ccb, 0,
1644                             SF_NO_PRINT | SF_NO_RECOVERY | SF_NO_RETRY, NULL);
1645                 }
1646                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1647                         /* Don't wedge the queue */
1648                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1649                                          /*run_queue*/TRUE);
1650                 }
1651                 /*
1652                  * Do Domain Validation for lun 0 on devices that claim
1653                  * to support Synchronous Transfer modes.
1654                  */
1655                 if (softc->action == PROBE_TUR_FOR_NEGOTIATION
1656                  && done_ccb->ccb_h.target_lun == 0
1657                  && (path->device->inq_data.flags & SID_Sync) != 0
1658                  && (path->device->flags & CAM_DEV_IN_DV) == 0) {
1659                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1660                             ("Begin Domain Validation\n"));
1661                         path->device->flags |= CAM_DEV_IN_DV;
1662                         xpt_release_ccb(done_ccb);
1663                         PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV1);
1664                         xpt_schedule(periph, priority);
1665                         goto out;
1666                 }
1667                 if (softc->action == PROBE_DV_EXIT) {
1668                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1669                             ("Leave Domain Validation\n"));
1670                 }
1671                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1672                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1673                         xpt_acquire_device(path->device);
1674                 }
1675                 path->device->flags &=
1676                     ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
1677                 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
1678                         /* Inform the XPT that a new device has been found */
1679                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1680                         xpt_action(done_ccb);
1681                         xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
1682                                   done_ccb);
1683                 }
1684                 PROBE_SET_ACTION(softc, PROBE_DONE);
1685                 xpt_release_ccb(done_ccb);
1686                 break;
1687         case PROBE_INQUIRY_BASIC_DV1:
1688         case PROBE_INQUIRY_BASIC_DV2:
1689         {
1690                 struct scsi_inquiry_data *nbuf;
1691                 struct ccb_scsiio *csio;
1692
1693                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1694                         cam_periph_error(done_ccb, 0,
1695                             SF_NO_PRINT | SF_NO_RECOVERY | SF_NO_RETRY, NULL);
1696                 }
1697                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1698                         /* Don't wedge the queue */
1699                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1700                                          /*run_queue*/TRUE);
1701                 }
1702                 csio = &done_ccb->csio;
1703                 nbuf = (struct scsi_inquiry_data *)csio->data_ptr;
1704                 if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) {
1705                         xpt_print(path,
1706                             "inquiry data fails comparison at DV%d step\n",
1707                             softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2);
1708                         if (proberequestbackoff(periph, path->device)) {
1709                                 path->device->flags &= ~CAM_DEV_IN_DV;
1710                                 PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
1711                         } else {
1712                                 /* give up */
1713                                 PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
1714                         }
1715                         free(nbuf, M_CAMXPT);
1716                         xpt_release_ccb(done_ccb);
1717                         xpt_schedule(periph, priority);
1718                         goto out;
1719                 }
1720                 free(nbuf, M_CAMXPT);
1721                 if (softc->action == PROBE_INQUIRY_BASIC_DV1) {
1722                         PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV2);
1723                         xpt_release_ccb(done_ccb);
1724                         xpt_schedule(periph, priority);
1725                         goto out;
1726                 }
1727                 if (softc->action == PROBE_INQUIRY_BASIC_DV2) {
1728                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1729                             ("Leave Domain Validation Successfully\n"));
1730                 }
1731                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1732                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1733                         xpt_acquire_device(path->device);
1734                 }
1735                 path->device->flags &=
1736                     ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
1737                 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
1738                         /* Inform the XPT that a new device has been found */
1739                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1740                         xpt_action(done_ccb);
1741                         xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
1742                                   done_ccb);
1743                 }
1744                 PROBE_SET_ACTION(softc, PROBE_DONE);
1745                 xpt_release_ccb(done_ccb);
1746                 break;
1747         }
1748         default:
1749                 panic("probedone: invalid action state 0x%x\n", softc->action);
1750         }
1751         done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
1752         TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
1753         done_ccb->ccb_h.status = CAM_REQ_CMP;
1754         xpt_done(done_ccb);
1755         if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
1756                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe completed\n"));
1757                 /* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */
1758                 cam_release_devq(path, 0, 0, 0, FALSE);
1759                 cam_periph_release_locked(periph);
1760                 cam_periph_invalidate(periph);
1761                 cam_periph_release_locked(periph);
1762         } else {
1763                 probeschedule(periph);
1764                 goto out;
1765         }
1766 }
1767
1768 static void
1769 probe_purge_old(struct cam_path *path, struct scsi_report_luns_data *new,
1770     probe_flags flags)
1771 {
1772         struct cam_path *tp;
1773         struct scsi_report_luns_data *old;
1774         u_int idx1, idx2, nlun_old, nlun_new;
1775         lun_id_t this_lun;
1776         u_int8_t *ol, *nl;
1777
1778         if (path->target == NULL) {
1779                 return;
1780         }
1781         mtx_lock(&path->target->luns_mtx);
1782         old = path->target->luns;
1783         path->target->luns = new;
1784         mtx_unlock(&path->target->luns_mtx);
1785         if (old == NULL)
1786                 return;
1787         nlun_old = scsi_4btoul(old->length) / 8;
1788         nlun_new = scsi_4btoul(new->length) / 8;
1789
1790         /*
1791          * We are not going to assume sorted lists. Deal.
1792          */
1793         for (idx1 = 0; idx1 < nlun_old; idx1++) {
1794                 ol = old->luns[idx1].lundata;
1795                 for (idx2 = 0; idx2 < nlun_new; idx2++) {
1796                         nl = new->luns[idx2].lundata;
1797                         if (memcmp(nl, ol, 8) == 0) {
1798                                 break;
1799                         }
1800                 }
1801                 if (idx2 < nlun_new) {
1802                         continue;
1803                 }
1804                 /*
1805                  * An 'old' item not in the 'new' list.
1806                  * Nuke it. Except that if it is lun 0,
1807                  * that would be what the probe state
1808                  * machine is currently working on,
1809                  * so we won't do that.
1810                  */
1811                 CAM_GET_LUN(old, idx1, this_lun);
1812                 if (this_lun == 0) {
1813                         continue;
1814                 }
1815
1816                 /*
1817                  * We also cannot nuke it if it is
1818                  * not in a lun format we understand
1819                  * and replace the LUN with a "simple" LUN
1820                  * if that is all the HBA supports.
1821                  */
1822                 if (!(flags & PROBE_EXTLUN)) {
1823                         if (!CAM_CAN_GET_SIMPLE_LUN(old, idx1))
1824                                 continue;
1825                         CAM_GET_SIMPLE_LUN(old, idx1, this_lun);
1826                 }
1827
1828                 if (xpt_create_path(&tp, NULL, xpt_path_path_id(path),
1829                     xpt_path_target_id(path), this_lun) == CAM_REQ_CMP) {
1830                         xpt_async(AC_LOST_DEVICE, tp, NULL);
1831                         xpt_free_path(tp);
1832                 }
1833         }
1834         free(old, M_CAMXPT);
1835 }
1836
1837 static void
1838 probecleanup(struct cam_periph *periph)
1839 {
1840         free(periph->softc, M_CAMXPT);
1841 }
1842
1843 static void
1844 scsi_find_quirk(struct cam_ed *device)
1845 {
1846         struct scsi_quirk_entry *quirk;
1847         caddr_t match;
1848
1849         match = cam_quirkmatch((caddr_t)&device->inq_data,
1850                                (caddr_t)scsi_quirk_table,
1851                                sizeof(scsi_quirk_table) /
1852                                sizeof(*scsi_quirk_table),
1853                                sizeof(*scsi_quirk_table), scsi_inquiry_match);
1854
1855         if (match == NULL)
1856                 panic("xpt_find_quirk: device didn't match wildcard entry!!");
1857
1858         quirk = (struct scsi_quirk_entry *)match;
1859         device->quirk = quirk;
1860         device->mintags = quirk->mintags;
1861         device->maxtags = quirk->maxtags;
1862 }
1863
1864 static int
1865 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS)
1866 {
1867         int error, val;
1868
1869         val = cam_srch_hi;
1870         error = sysctl_handle_int(oidp, &val, 0, req);
1871         if (error != 0 || req->newptr == NULL)
1872                 return (error);
1873         if (val == 0 || val == 1) {
1874                 cam_srch_hi = val;
1875                 return (0);
1876         } else {
1877                 return (EINVAL);
1878         }
1879 }
1880
1881 typedef struct {
1882         union   ccb *request_ccb;
1883         struct  ccb_pathinq *cpi;
1884         int     counter;
1885         int     lunindex[0];
1886 } scsi_scan_bus_info;
1887
1888 /*
1889  * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
1890  * As the scan progresses, scsi_scan_bus is used as the
1891  * callback on completion function.
1892  */
1893 static void
1894 scsi_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
1895 {
1896         struct mtx *mtx;
1897
1898         CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
1899                   ("scsi_scan_bus\n"));
1900         switch (request_ccb->ccb_h.func_code) {
1901         case XPT_SCAN_BUS:
1902         case XPT_SCAN_TGT:
1903         {
1904                 scsi_scan_bus_info *scan_info;
1905                 union   ccb *work_ccb, *reset_ccb;
1906                 struct  cam_path *path;
1907                 u_int   i;
1908                 u_int   low_target, max_target;
1909                 u_int   initiator_id;
1910
1911                 /* Find out the characteristics of the bus */
1912                 work_ccb = xpt_alloc_ccb_nowait();
1913                 if (work_ccb == NULL) {
1914                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1915                         xpt_done(request_ccb);
1916                         return;
1917                 }
1918                 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
1919                               request_ccb->ccb_h.pinfo.priority);
1920                 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
1921                 xpt_action(work_ccb);
1922                 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
1923                         request_ccb->ccb_h.status = work_ccb->ccb_h.status;
1924                         xpt_free_ccb(work_ccb);
1925                         xpt_done(request_ccb);
1926                         return;
1927                 }
1928
1929                 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
1930                         /*
1931                          * Can't scan the bus on an adapter that
1932                          * cannot perform the initiator role.
1933                          */
1934                         request_ccb->ccb_h.status = CAM_REQ_CMP;
1935                         xpt_free_ccb(work_ccb);
1936                         xpt_done(request_ccb);
1937                         return;
1938                 }
1939
1940                 /* We may need to reset bus first, if we haven't done it yet. */
1941                 if ((work_ccb->cpi.hba_inquiry &
1942                     (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) &&
1943                     !(work_ccb->cpi.hba_misc & PIM_NOBUSRESET) &&
1944                     !timevalisset(&request_ccb->ccb_h.path->bus->last_reset) &&
1945                     (reset_ccb = xpt_alloc_ccb_nowait()) != NULL) {
1946                         xpt_setup_ccb(&reset_ccb->ccb_h, request_ccb->ccb_h.path,
1947                               CAM_PRIORITY_NONE);
1948                         reset_ccb->ccb_h.func_code = XPT_RESET_BUS;
1949                         xpt_action(reset_ccb);
1950                         if (reset_ccb->ccb_h.status != CAM_REQ_CMP) {
1951                                 request_ccb->ccb_h.status = reset_ccb->ccb_h.status;
1952                                 xpt_free_ccb(reset_ccb);
1953                                 xpt_free_ccb(work_ccb);
1954                                 xpt_done(request_ccb);
1955                                 return;
1956                         }
1957                         xpt_free_ccb(reset_ccb);
1958                 }
1959
1960                 /* Save some state for use while we probe for devices */
1961                 scan_info = (scsi_scan_bus_info *) malloc(sizeof(scsi_scan_bus_info) +
1962                     (work_ccb->cpi.max_target * sizeof (u_int)), M_CAMXPT, M_ZERO|M_NOWAIT);
1963                 if (scan_info == NULL) {
1964                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1965                         xpt_free_ccb(work_ccb);
1966                         xpt_done(request_ccb);
1967                         return;
1968                 }
1969                 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
1970                    ("SCAN start for %p\n", scan_info));
1971                 scan_info->request_ccb = request_ccb;
1972                 scan_info->cpi = &work_ccb->cpi;
1973
1974                 /* Cache on our stack so we can work asynchronously */
1975                 max_target = scan_info->cpi->max_target;
1976                 low_target = 0;
1977                 initiator_id = scan_info->cpi->initiator_id;
1978
1979
1980                 /*
1981                  * We can scan all targets in parallel, or do it sequentially.
1982                  */
1983
1984                 if (request_ccb->ccb_h.func_code == XPT_SCAN_TGT) {
1985                         max_target = low_target = request_ccb->ccb_h.target_id;
1986                         scan_info->counter = 0;
1987                 } else if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
1988                         max_target = 0;
1989                         scan_info->counter = 0;
1990                 } else {
1991                         scan_info->counter = scan_info->cpi->max_target + 1;
1992                         if (scan_info->cpi->initiator_id < scan_info->counter) {
1993                                 scan_info->counter--;
1994                         }
1995                 }
1996                 mtx = xpt_path_mtx(scan_info->request_ccb->ccb_h.path);
1997                 mtx_unlock(mtx);
1998
1999                 for (i = low_target; i <= max_target; i++) {
2000                         cam_status status;
2001                         if (i == initiator_id)
2002                                 continue;
2003
2004                         status = xpt_create_path(&path, NULL,
2005                                                  request_ccb->ccb_h.path_id,
2006                                                  i, 0);
2007                         if (status != CAM_REQ_CMP) {
2008                                 printf("scsi_scan_bus: xpt_create_path failed"
2009                                        " with status %#x, bus scan halted\n",
2010                                        status);
2011                                 free(scan_info, M_CAMXPT);
2012                                 request_ccb->ccb_h.status = status;
2013                                 xpt_free_ccb(work_ccb);
2014                                 xpt_done(request_ccb);
2015                                 break;
2016                         }
2017                         work_ccb = xpt_alloc_ccb_nowait();
2018                         if (work_ccb == NULL) {
2019                                 xpt_free_ccb((union ccb *)scan_info->cpi);
2020                                 free(scan_info, M_CAMXPT);
2021                                 xpt_free_path(path);
2022                                 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
2023                                 xpt_done(request_ccb);
2024                                 break;
2025                         }
2026                         xpt_setup_ccb(&work_ccb->ccb_h, path,
2027                                       request_ccb->ccb_h.pinfo.priority);
2028                         work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2029                         work_ccb->ccb_h.cbfcnp = scsi_scan_bus;
2030                         work_ccb->ccb_h.flags |= CAM_UNLOCKED;
2031                         work_ccb->ccb_h.ppriv_ptr0 = scan_info;
2032                         work_ccb->crcn.flags = request_ccb->crcn.flags;
2033                         xpt_action(work_ccb);
2034                 }
2035
2036                 mtx_lock(mtx);
2037                 break;
2038         }
2039         case XPT_SCAN_LUN:
2040         {
2041                 cam_status status;
2042                 struct cam_path *path, *oldpath;
2043                 scsi_scan_bus_info *scan_info;
2044                 struct cam_et *target;
2045                 struct cam_ed *device, *nextdev;
2046                 int next_target;
2047                 path_id_t path_id;
2048                 target_id_t target_id;
2049                 lun_id_t lun_id;
2050
2051                 oldpath = request_ccb->ccb_h.path;
2052
2053                 status = cam_ccb_status(request_ccb);
2054                 scan_info = (scsi_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
2055                 path_id = request_ccb->ccb_h.path_id;
2056                 target_id = request_ccb->ccb_h.target_id;
2057                 lun_id = request_ccb->ccb_h.target_lun;
2058                 target = request_ccb->ccb_h.path->target;
2059                 next_target = 1;
2060
2061                 mtx = xpt_path_mtx(scan_info->request_ccb->ccb_h.path);
2062                 mtx_lock(mtx);
2063                 mtx_lock(&target->luns_mtx);
2064                 if (target->luns) {
2065                         lun_id_t first;
2066                         u_int nluns = scsi_4btoul(target->luns->length) / 8;
2067
2068                         /*
2069                          * Make sure we skip over lun 0 if it's the first member
2070                          * of the list as we've actually just finished probing
2071                          * it.
2072                          */
2073                         CAM_GET_LUN(target->luns, 0, first);
2074                         if (first == 0 && scan_info->lunindex[target_id] == 0) {
2075                                 scan_info->lunindex[target_id]++;
2076                         }
2077
2078                         /*
2079                          * Skip any LUNs that the HBA can't deal with.
2080                          */
2081                         while (scan_info->lunindex[target_id] < nluns) {
2082                                 if (scan_info->cpi->hba_misc & PIM_EXTLUNS) {
2083                                         CAM_GET_LUN(target->luns,
2084                                             scan_info->lunindex[target_id],
2085                                             lun_id);
2086                                         break;
2087                                 }
2088
2089                                 if (CAM_CAN_GET_SIMPLE_LUN(target->luns,
2090                                     scan_info->lunindex[target_id])) {
2091                                         CAM_GET_SIMPLE_LUN(target->luns,
2092                                             scan_info->lunindex[target_id],
2093                                             lun_id);
2094                                         break;
2095                                 }
2096
2097                                 scan_info->lunindex[target_id]++;
2098                         }
2099
2100                         if (scan_info->lunindex[target_id] < nluns) {
2101                                 mtx_unlock(&target->luns_mtx);
2102                                 next_target = 0;
2103                                 CAM_DEBUG(request_ccb->ccb_h.path,
2104                                     CAM_DEBUG_PROBE,
2105                                    ("next lun to try at index %u is %jx\n",
2106                                    scan_info->lunindex[target_id],
2107                                    (uintmax_t)lun_id));
2108                                 scan_info->lunindex[target_id]++;
2109                         } else {
2110                                 mtx_unlock(&target->luns_mtx);
2111                                 /* We're done with scanning all luns. */
2112                         }
2113                 } else {
2114                         mtx_unlock(&target->luns_mtx);
2115                         device = request_ccb->ccb_h.path->device;
2116                         /* Continue sequential LUN scan if: */
2117                         /*  -- we have more LUNs that need recheck */
2118                         mtx_lock(&target->bus->eb_mtx);
2119                         nextdev = device;
2120                         while ((nextdev = TAILQ_NEXT(nextdev, links)) != NULL)
2121                                 if ((nextdev->flags & CAM_DEV_UNCONFIGURED) == 0)
2122                                         break;
2123                         mtx_unlock(&target->bus->eb_mtx);
2124                         if (nextdev != NULL) {
2125                                 next_target = 0;
2126                         /*  -- stop if CAM_QUIRK_NOLUNS is set. */
2127                         } else if (SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOLUNS) {
2128                                 next_target = 1;
2129                         /*  -- this LUN is connected and its SCSI version
2130                          *     allows more LUNs. */
2131                         } else if ((device->flags & CAM_DEV_UNCONFIGURED) == 0) {
2132                                 if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
2133                                     CAN_SRCH_HI_DENSE(device))
2134                                         next_target = 0;
2135                         /*  -- this LUN is disconnected, its SCSI version
2136                          *     allows more LUNs and we guess they may be. */
2137                         } else if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0) {
2138                                 if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
2139                                     CAN_SRCH_HI_SPARSE(device))
2140                                         next_target = 0;
2141                         }
2142                         if (next_target == 0) {
2143                                 lun_id++;
2144                                 if (lun_id > scan_info->cpi->max_lun)
2145                                         next_target = 1;
2146                         }
2147                 }
2148
2149                 /*
2150                  * Check to see if we scan any further luns.
2151                  */
2152                 if (next_target) {
2153                         int done;
2154
2155                         /*
2156                          * Free the current request path- we're done with it.
2157                          */
2158                         xpt_free_path(oldpath);
2159  hop_again:
2160                         done = 0;
2161                         if (scan_info->request_ccb->ccb_h.func_code == XPT_SCAN_TGT) {
2162                                 done = 1;
2163                         } else if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
2164                                 scan_info->counter++;
2165                                 if (scan_info->counter ==
2166                                     scan_info->cpi->initiator_id) {
2167                                         scan_info->counter++;
2168                                 }
2169                                 if (scan_info->counter >=
2170                                     scan_info->cpi->max_target+1) {
2171                                         done = 1;
2172                                 }
2173                         } else {
2174                                 scan_info->counter--;
2175                                 if (scan_info->counter == 0) {
2176                                         done = 1;
2177                                 }
2178                         }
2179                         if (done) {
2180                                 mtx_unlock(mtx);
2181                                 xpt_free_ccb(request_ccb);
2182                                 xpt_free_ccb((union ccb *)scan_info->cpi);
2183                                 request_ccb = scan_info->request_ccb;
2184                                 CAM_DEBUG(request_ccb->ccb_h.path,
2185                                     CAM_DEBUG_TRACE,
2186                                    ("SCAN done for %p\n", scan_info));
2187                                 free(scan_info, M_CAMXPT);
2188                                 request_ccb->ccb_h.status = CAM_REQ_CMP;
2189                                 xpt_done(request_ccb);
2190                                 break;
2191                         }
2192
2193                         if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) {
2194                                 mtx_unlock(mtx);
2195                                 xpt_free_ccb(request_ccb);
2196                                 break;
2197                         }
2198                         status = xpt_create_path(&path, NULL,
2199                             scan_info->request_ccb->ccb_h.path_id,
2200                             scan_info->counter, 0);
2201                         if (status != CAM_REQ_CMP) {
2202                                 mtx_unlock(mtx);
2203                                 printf("scsi_scan_bus: xpt_create_path failed"
2204                                     " with status %#x, bus scan halted\n",
2205                                     status);
2206                                 xpt_free_ccb(request_ccb);
2207                                 xpt_free_ccb((union ccb *)scan_info->cpi);
2208                                 request_ccb = scan_info->request_ccb;
2209                                 free(scan_info, M_CAMXPT);
2210                                 request_ccb->ccb_h.status = status;
2211                                 xpt_done(request_ccb);
2212                                 break;
2213                         }
2214                         xpt_setup_ccb(&request_ccb->ccb_h, path,
2215                             request_ccb->ccb_h.pinfo.priority);
2216                         request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2217                         request_ccb->ccb_h.cbfcnp = scsi_scan_bus;
2218                         request_ccb->ccb_h.flags |= CAM_UNLOCKED;
2219                         request_ccb->ccb_h.ppriv_ptr0 = scan_info;
2220                         request_ccb->crcn.flags =
2221                             scan_info->request_ccb->crcn.flags;
2222                 } else {
2223                         status = xpt_create_path(&path, NULL,
2224                                                  path_id, target_id, lun_id);
2225                         /*
2226                          * Free the old request path- we're done with it. We
2227                          * do this *after* creating the new path so that
2228                          * we don't remove a target that has our lun list
2229                          * in the case that lun 0 is not present.
2230                          */
2231                         xpt_free_path(oldpath);
2232                         if (status != CAM_REQ_CMP) {
2233                                 printf("scsi_scan_bus: xpt_create_path failed "
2234                                        "with status %#x, halting LUN scan\n",
2235                                        status);
2236                                 goto hop_again;
2237                         }
2238                         xpt_setup_ccb(&request_ccb->ccb_h, path,
2239                                       request_ccb->ccb_h.pinfo.priority);
2240                         request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2241                         request_ccb->ccb_h.cbfcnp = scsi_scan_bus;
2242                         request_ccb->ccb_h.flags |= CAM_UNLOCKED;
2243                         request_ccb->ccb_h.ppriv_ptr0 = scan_info;
2244                         request_ccb->crcn.flags =
2245                                 scan_info->request_ccb->crcn.flags;
2246                 }
2247                 mtx_unlock(mtx);
2248                 xpt_action(request_ccb);
2249                 break;
2250         }
2251         default:
2252                 break;
2253         }
2254 }
2255
2256 static void
2257 scsi_scan_lun(struct cam_periph *periph, struct cam_path *path,
2258              cam_flags flags, union ccb *request_ccb)
2259 {
2260         struct ccb_pathinq cpi;
2261         cam_status status;
2262         struct cam_path *new_path;
2263         struct cam_periph *old_periph;
2264         int lock;
2265
2266         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("scsi_scan_lun\n"));
2267
2268         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2269         cpi.ccb_h.func_code = XPT_PATH_INQ;
2270         xpt_action((union ccb *)&cpi);
2271
2272         if (cpi.ccb_h.status != CAM_REQ_CMP) {
2273                 if (request_ccb != NULL) {
2274                         request_ccb->ccb_h.status = cpi.ccb_h.status;
2275                         xpt_done(request_ccb);
2276                 }
2277                 return;
2278         }
2279
2280         if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
2281                 /*
2282                  * Can't scan the bus on an adapter that
2283                  * cannot perform the initiator role.
2284                  */
2285                 if (request_ccb != NULL) {
2286                         request_ccb->ccb_h.status = CAM_REQ_CMP;
2287                         xpt_done(request_ccb);
2288                 }
2289                 return;
2290         }
2291
2292         if (request_ccb == NULL) {
2293                 request_ccb = xpt_alloc_ccb_nowait();
2294                 if (request_ccb == NULL) {
2295                         xpt_print(path, "scsi_scan_lun: can't allocate CCB, "
2296                             "can't continue\n");
2297                         return;
2298                 }
2299                 status = xpt_create_path(&new_path, NULL,
2300                                           path->bus->path_id,
2301                                           path->target->target_id,
2302                                           path->device->lun_id);
2303                 if (status != CAM_REQ_CMP) {
2304                         xpt_print(path, "scsi_scan_lun: can't create path, "
2305                             "can't continue\n");
2306                         xpt_free_ccb(request_ccb);
2307                         return;
2308                 }
2309                 xpt_setup_ccb(&request_ccb->ccb_h, new_path, CAM_PRIORITY_XPT);
2310                 request_ccb->ccb_h.cbfcnp = xptscandone;
2311                 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2312                 request_ccb->ccb_h.flags |= CAM_UNLOCKED;
2313                 request_ccb->crcn.flags = flags;
2314         }
2315
2316         lock = (xpt_path_owned(path) == 0);
2317         if (lock)
2318                 xpt_path_lock(path);
2319         if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
2320                 if ((old_periph->flags & CAM_PERIPH_INVALID) == 0) {
2321                         probe_softc *softc;
2322
2323                         softc = (probe_softc *)old_periph->softc;
2324                         TAILQ_INSERT_TAIL(&softc->request_ccbs,
2325                             &request_ccb->ccb_h, periph_links.tqe);
2326                 } else {
2327                         request_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
2328                         xpt_done(request_ccb);
2329                 }
2330         } else {
2331                 status = cam_periph_alloc(proberegister, NULL, probecleanup,
2332                                           probestart, "probe",
2333                                           CAM_PERIPH_BIO,
2334                                           request_ccb->ccb_h.path, NULL, 0,
2335                                           request_ccb);
2336
2337                 if (status != CAM_REQ_CMP) {
2338                         xpt_print(path, "scsi_scan_lun: cam_alloc_periph "
2339                             "returned an error, can't continue probe\n");
2340                         request_ccb->ccb_h.status = status;
2341                         xpt_done(request_ccb);
2342                 }
2343         }
2344         if (lock)
2345                 xpt_path_unlock(path);
2346 }
2347
2348 static void
2349 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
2350 {
2351
2352         xpt_free_path(done_ccb->ccb_h.path);
2353         xpt_free_ccb(done_ccb);
2354 }
2355
2356 static struct cam_ed *
2357 scsi_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
2358 {
2359         struct scsi_quirk_entry *quirk;
2360         struct cam_ed *device;
2361
2362         device = xpt_alloc_device(bus, target, lun_id);
2363         if (device == NULL)
2364                 return (NULL);
2365
2366         /*
2367          * Take the default quirk entry until we have inquiry
2368          * data and can determine a better quirk to use.
2369          */
2370         quirk = &scsi_quirk_table[scsi_quirk_table_size - 1];
2371         device->quirk = (void *)quirk;
2372         device->mintags = quirk->mintags;
2373         device->maxtags = quirk->maxtags;
2374         bzero(&device->inq_data, sizeof(device->inq_data));
2375         device->inq_flags = 0;
2376         device->queue_flags = 0;
2377         device->serial_num = NULL;
2378         device->serial_num_len = 0;
2379         device->device_id = NULL;
2380         device->device_id_len = 0;
2381         device->supported_vpds = NULL;
2382         device->supported_vpds_len = 0;
2383         return (device);
2384 }
2385
2386 static void
2387 scsi_devise_transport(struct cam_path *path)
2388 {
2389         struct ccb_pathinq cpi;
2390         struct ccb_trans_settings cts;
2391         struct scsi_inquiry_data *inq_buf;
2392
2393         /* Get transport information from the SIM */
2394         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2395         cpi.ccb_h.func_code = XPT_PATH_INQ;
2396         xpt_action((union ccb *)&cpi);
2397
2398         inq_buf = NULL;
2399         if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
2400                 inq_buf = &path->device->inq_data;
2401         path->device->protocol = PROTO_SCSI;
2402         path->device->protocol_version =
2403             inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
2404         path->device->transport = cpi.transport;
2405         path->device->transport_version = cpi.transport_version;
2406
2407         /*
2408          * Any device not using SPI3 features should
2409          * be considered SPI2 or lower.
2410          */
2411         if (inq_buf != NULL) {
2412                 if (path->device->transport == XPORT_SPI
2413                  && (inq_buf->spi3data & SID_SPI_MASK) == 0
2414                  && path->device->transport_version > 2)
2415                         path->device->transport_version = 2;
2416         } else {
2417                 struct cam_ed* otherdev;
2418
2419                 for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
2420                      otherdev != NULL;
2421                      otherdev = TAILQ_NEXT(otherdev, links)) {
2422                         if (otherdev != path->device)
2423                                 break;
2424                 }
2425
2426                 if (otherdev != NULL) {
2427                         /*
2428                          * Initially assume the same versioning as
2429                          * prior luns for this target.
2430                          */
2431                         path->device->protocol_version =
2432                             otherdev->protocol_version;
2433                         path->device->transport_version =
2434                             otherdev->transport_version;
2435                 } else {
2436                         /* Until we know better, opt for safty */
2437                         path->device->protocol_version = 2;
2438                         if (path->device->transport == XPORT_SPI)
2439                                 path->device->transport_version = 2;
2440                         else
2441                                 path->device->transport_version = 0;
2442                 }
2443         }
2444
2445         /*
2446          * XXX
2447          * For a device compliant with SPC-2 we should be able
2448          * to determine the transport version supported by
2449          * scrutinizing the version descriptors in the
2450          * inquiry buffer.
2451          */
2452
2453         /* Tell the controller what we think */
2454         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
2455         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
2456         cts.type = CTS_TYPE_CURRENT_SETTINGS;
2457         cts.transport = path->device->transport;
2458         cts.transport_version = path->device->transport_version;
2459         cts.protocol = path->device->protocol;
2460         cts.protocol_version = path->device->protocol_version;
2461         cts.proto_specific.valid = 0;
2462         cts.xport_specific.valid = 0;
2463         xpt_action((union ccb *)&cts);
2464 }
2465
2466 static void
2467 scsi_dev_advinfo(union ccb *start_ccb)
2468 {
2469         struct cam_ed *device;
2470         struct ccb_dev_advinfo *cdai;
2471         off_t amt;
2472
2473         start_ccb->ccb_h.status = CAM_REQ_INVALID;
2474         device = start_ccb->ccb_h.path->device;
2475         cdai = &start_ccb->cdai;
2476         switch(cdai->buftype) {
2477         case CDAI_TYPE_SCSI_DEVID:
2478                 if (cdai->flags & CDAI_FLAG_STORE)
2479                         return;
2480                 cdai->provsiz = device->device_id_len;
2481                 if (device->device_id_len == 0)
2482                         break;
2483                 amt = device->device_id_len;
2484                 if (cdai->provsiz > cdai->bufsiz)
2485                         amt = cdai->bufsiz;
2486                 memcpy(cdai->buf, device->device_id, amt);
2487                 break;
2488         case CDAI_TYPE_SERIAL_NUM:
2489                 if (cdai->flags & CDAI_FLAG_STORE)
2490                         return;
2491                 cdai->provsiz = device->serial_num_len;
2492                 if (device->serial_num_len == 0)
2493                         break;
2494                 amt = device->serial_num_len;
2495                 if (cdai->provsiz > cdai->bufsiz)
2496                         amt = cdai->bufsiz;
2497                 memcpy(cdai->buf, device->serial_num, amt);
2498                 break;
2499         case CDAI_TYPE_PHYS_PATH:
2500                 if (cdai->flags & CDAI_FLAG_STORE) {
2501                         if (device->physpath != NULL) {
2502                                 free(device->physpath, M_CAMXPT);
2503                                 device->physpath = NULL;
2504                         }
2505                         device->physpath_len = cdai->bufsiz;
2506                         /* Clear existing buffer if zero length */
2507                         if (cdai->bufsiz == 0)
2508                                 break;
2509                         device->physpath = malloc(cdai->bufsiz, M_CAMXPT, M_NOWAIT);
2510                         if (device->physpath == NULL) {
2511                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
2512                                 return;
2513                         }
2514                         memcpy(device->physpath, cdai->buf, cdai->bufsiz);
2515                 } else {
2516                         cdai->provsiz = device->physpath_len;
2517                         if (device->physpath_len == 0)
2518                                 break;
2519                         amt = device->physpath_len;
2520                         if (cdai->provsiz > cdai->bufsiz)
2521                                 amt = cdai->bufsiz;
2522                         memcpy(cdai->buf, device->physpath, amt);
2523                 }
2524                 break;
2525         case CDAI_TYPE_RCAPLONG:
2526                 if (cdai->flags & CDAI_FLAG_STORE) {
2527                         if (device->rcap_buf != NULL) {
2528                                 free(device->rcap_buf, M_CAMXPT);
2529                                 device->rcap_buf = NULL;
2530                         }
2531
2532                         device->rcap_len = cdai->bufsiz;
2533                         /* Clear existing buffer if zero length */
2534                         if (cdai->bufsiz == 0)
2535                                 break;
2536
2537                         device->rcap_buf = malloc(cdai->bufsiz, M_CAMXPT,
2538                                                   M_NOWAIT);
2539                         if (device->rcap_buf == NULL) {
2540                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
2541                                 return;
2542                         }
2543
2544                         memcpy(device->rcap_buf, cdai->buf, cdai->bufsiz);
2545                 } else {
2546                         cdai->provsiz = device->rcap_len;
2547                         if (device->rcap_len == 0)
2548                                 break;
2549                         amt = device->rcap_len;
2550                         if (cdai->provsiz > cdai->bufsiz)
2551                                 amt = cdai->bufsiz;
2552                         memcpy(cdai->buf, device->rcap_buf, amt);
2553                 }
2554                 break;
2555         case CDAI_TYPE_EXT_INQ:
2556                 /*
2557                  * We fetch extended inquiry data during probe, if
2558                  * available.  We don't allow changing it.
2559                  */
2560                 if (cdai->flags & CDAI_FLAG_STORE)
2561                         return;
2562                 cdai->provsiz = device->ext_inq_len;
2563                 if (device->ext_inq_len == 0)
2564                         break;
2565                 amt = device->ext_inq_len;
2566                 if (cdai->provsiz > cdai->bufsiz)
2567                         amt = cdai->bufsiz;
2568                 memcpy(cdai->buf, device->ext_inq, amt);
2569                 break;
2570         default:
2571                 return;
2572         }
2573         start_ccb->ccb_h.status = CAM_REQ_CMP;
2574
2575         if (cdai->flags & CDAI_FLAG_STORE) {
2576                 xpt_async(AC_ADVINFO_CHANGED, start_ccb->ccb_h.path,
2577                           (void *)(uintptr_t)cdai->buftype);
2578         }
2579 }
2580
2581 static void
2582 scsi_action(union ccb *start_ccb)
2583 {
2584
2585         switch (start_ccb->ccb_h.func_code) {
2586         case XPT_SET_TRAN_SETTINGS:
2587         {
2588                 scsi_set_transfer_settings(&start_ccb->cts,
2589                                            start_ccb->ccb_h.path,
2590                                            /*async_update*/FALSE);
2591                 break;
2592         }
2593         case XPT_SCAN_BUS:
2594         case XPT_SCAN_TGT:
2595                 scsi_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
2596                 break;
2597         case XPT_SCAN_LUN:
2598                 scsi_scan_lun(start_ccb->ccb_h.path->periph,
2599                               start_ccb->ccb_h.path, start_ccb->crcn.flags,
2600                               start_ccb);
2601                 break;
2602         case XPT_DEV_ADVINFO:
2603         {
2604                 scsi_dev_advinfo(start_ccb);
2605                 break;
2606         }
2607         default:
2608                 xpt_action_default(start_ccb);
2609                 break;
2610         }
2611 }
2612
2613 static void
2614 scsi_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_path *path,
2615                            int async_update)
2616 {
2617         struct  ccb_pathinq cpi;
2618         struct  ccb_trans_settings cur_cts;
2619         struct  ccb_trans_settings_scsi *scsi;
2620         struct  ccb_trans_settings_scsi *cur_scsi;
2621         struct  scsi_inquiry_data *inq_data;
2622         struct  cam_ed *device;
2623
2624         if (path == NULL || (device = path->device) == NULL) {
2625                 cts->ccb_h.status = CAM_PATH_INVALID;
2626                 xpt_done((union ccb *)cts);
2627                 return;
2628         }
2629
2630         if (cts->protocol == PROTO_UNKNOWN
2631          || cts->protocol == PROTO_UNSPECIFIED) {
2632                 cts->protocol = device->protocol;
2633                 cts->protocol_version = device->protocol_version;
2634         }
2635
2636         if (cts->protocol_version == PROTO_VERSION_UNKNOWN
2637          || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
2638                 cts->protocol_version = device->protocol_version;
2639
2640         if (cts->protocol != device->protocol) {
2641                 xpt_print(path, "Uninitialized Protocol %x:%x?\n",
2642                        cts->protocol, device->protocol);
2643                 cts->protocol = device->protocol;
2644         }
2645
2646         if (cts->protocol_version > device->protocol_version) {
2647                 if (bootverbose) {
2648                         xpt_print(path, "Down reving Protocol "
2649                             "Version from %d to %d?\n", cts->protocol_version,
2650                             device->protocol_version);
2651                 }
2652                 cts->protocol_version = device->protocol_version;
2653         }
2654
2655         if (cts->transport == XPORT_UNKNOWN
2656          || cts->transport == XPORT_UNSPECIFIED) {
2657                 cts->transport = device->transport;
2658                 cts->transport_version = device->transport_version;
2659         }
2660
2661         if (cts->transport_version == XPORT_VERSION_UNKNOWN
2662          || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
2663                 cts->transport_version = device->transport_version;
2664
2665         if (cts->transport != device->transport) {
2666                 xpt_print(path, "Uninitialized Transport %x:%x?\n",
2667                     cts->transport, device->transport);
2668                 cts->transport = device->transport;
2669         }
2670
2671         if (cts->transport_version > device->transport_version) {
2672                 if (bootverbose) {
2673                         xpt_print(path, "Down reving Transport "
2674                             "Version from %d to %d?\n", cts->transport_version,
2675                             device->transport_version);
2676                 }
2677                 cts->transport_version = device->transport_version;
2678         }
2679
2680         /*
2681          * Nothing more of interest to do unless
2682          * this is a device connected via the
2683          * SCSI protocol.
2684          */
2685         if (cts->protocol != PROTO_SCSI) {
2686                 if (async_update == FALSE)
2687                         xpt_action_default((union ccb *)cts);
2688                 return;
2689         }
2690
2691         inq_data = &device->inq_data;
2692         scsi = &cts->proto_specific.scsi;
2693         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2694         cpi.ccb_h.func_code = XPT_PATH_INQ;
2695         xpt_action((union ccb *)&cpi);
2696
2697         /* SCSI specific sanity checking */
2698         if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
2699          || (INQ_DATA_TQ_ENABLED(inq_data)) == 0
2700          || (device->queue_flags & SCP_QUEUE_DQUE) != 0
2701          || (device->mintags == 0)) {
2702                 /*
2703                  * Can't tag on hardware that doesn't support tags,
2704                  * doesn't have it enabled, or has broken tag support.
2705                  */
2706                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2707         }
2708
2709         if (async_update == FALSE) {
2710                 /*
2711                  * Perform sanity checking against what the
2712                  * controller and device can do.
2713                  */
2714                 xpt_setup_ccb(&cur_cts.ccb_h, path, CAM_PRIORITY_NONE);
2715                 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
2716                 cur_cts.type = cts->type;
2717                 xpt_action((union ccb *)&cur_cts);
2718                 if (cam_ccb_status((union ccb *)&cur_cts) != CAM_REQ_CMP) {
2719                         return;
2720                 }
2721                 cur_scsi = &cur_cts.proto_specific.scsi;
2722                 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
2723                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2724                         scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
2725                 }
2726                 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
2727                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2728         }
2729
2730         /* SPI specific sanity checking */
2731         if (cts->transport == XPORT_SPI && async_update == FALSE) {
2732                 u_int spi3caps;
2733                 struct ccb_trans_settings_spi *spi;
2734                 struct ccb_trans_settings_spi *cur_spi;
2735
2736                 spi = &cts->xport_specific.spi;
2737
2738                 cur_spi = &cur_cts.xport_specific.spi;
2739
2740                 /* Fill in any gaps in what the user gave us */
2741                 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
2742                         spi->sync_period = cur_spi->sync_period;
2743                 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
2744                         spi->sync_period = 0;
2745                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
2746                         spi->sync_offset = cur_spi->sync_offset;
2747                 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
2748                         spi->sync_offset = 0;
2749                 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
2750                         spi->ppr_options = cur_spi->ppr_options;
2751                 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
2752                         spi->ppr_options = 0;
2753                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
2754                         spi->bus_width = cur_spi->bus_width;
2755                 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
2756                         spi->bus_width = 0;
2757                 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
2758                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
2759                         spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
2760                 }
2761                 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
2762                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
2763                 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
2764                   && (inq_data->flags & SID_Sync) == 0
2765                   && cts->type == CTS_TYPE_CURRENT_SETTINGS)
2766                  || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)) {
2767                         /* Force async */
2768                         spi->sync_period = 0;
2769                         spi->sync_offset = 0;
2770                 }
2771
2772                 switch (spi->bus_width) {
2773                 case MSG_EXT_WDTR_BUS_32_BIT:
2774                         if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
2775                           || (inq_data->flags & SID_WBus32) != 0
2776                           || cts->type == CTS_TYPE_USER_SETTINGS)
2777                          && (cpi.hba_inquiry & PI_WIDE_32) != 0)
2778                                 break;
2779                         /* Fall Through to 16-bit */
2780                 case MSG_EXT_WDTR_BUS_16_BIT:
2781                         if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
2782                           || (inq_data->flags & SID_WBus16) != 0
2783                           || cts->type == CTS_TYPE_USER_SETTINGS)
2784                          && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
2785                                 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2786                                 break;
2787                         }
2788                         /* Fall Through to 8-bit */
2789                 default: /* New bus width?? */
2790                 case MSG_EXT_WDTR_BUS_8_BIT:
2791                         /* All targets can do this */
2792                         spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2793                         break;
2794                 }
2795
2796                 spi3caps = cpi.xport_specific.spi.ppr_options;
2797                 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
2798                  && cts->type == CTS_TYPE_CURRENT_SETTINGS)
2799                         spi3caps &= inq_data->spi3data;
2800
2801                 if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
2802                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
2803
2804                 if ((spi3caps & SID_SPI_IUS) == 0)
2805                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2806
2807                 if ((spi3caps & SID_SPI_QAS) == 0)
2808                         spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
2809
2810                 /* No SPI Transfer settings are allowed unless we are wide */
2811                 if (spi->bus_width == 0)
2812                         spi->ppr_options = 0;
2813
2814                 if ((spi->valid & CTS_SPI_VALID_DISC)
2815                  && ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0)) {
2816                         /*
2817                          * Can't tag queue without disconnection.
2818                          */
2819                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2820                         scsi->valid |= CTS_SCSI_VALID_TQ;
2821                 }
2822
2823                 /*
2824                  * If we are currently performing tagged transactions to
2825                  * this device and want to change its negotiation parameters,
2826                  * go non-tagged for a bit to give the controller a chance to
2827                  * negotiate unhampered by tag messages.
2828                  */
2829                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
2830                  && (device->inq_flags & SID_CmdQue) != 0
2831                  && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
2832                  && (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
2833                                    CTS_SPI_VALID_SYNC_OFFSET|
2834                                    CTS_SPI_VALID_BUS_WIDTH)) != 0)
2835                         scsi_toggle_tags(path);
2836         }
2837
2838         if (cts->type == CTS_TYPE_CURRENT_SETTINGS
2839          && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
2840                 int device_tagenb;
2841
2842                 /*
2843                  * If we are transitioning from tags to no-tags or
2844                  * vice-versa, we need to carefully freeze and restart
2845                  * the queue so that we don't overlap tagged and non-tagged
2846                  * commands.  We also temporarily stop tags if there is
2847                  * a change in transfer negotiation settings to allow
2848                  * "tag-less" negotiation.
2849                  */
2850                 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
2851                  || (device->inq_flags & SID_CmdQue) != 0)
2852                         device_tagenb = TRUE;
2853                 else
2854                         device_tagenb = FALSE;
2855
2856                 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
2857                   && device_tagenb == FALSE)
2858                  || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
2859                   && device_tagenb == TRUE)) {
2860
2861                         if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
2862                                 /*
2863                                  * Delay change to use tags until after a
2864                                  * few commands have gone to this device so
2865                                  * the controller has time to perform transfer
2866                                  * negotiations without tagged messages getting
2867                                  * in the way.
2868                                  */
2869                                 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
2870                                 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
2871                         } else {
2872                                 xpt_stop_tags(path);
2873                         }
2874                 }
2875         }
2876         if (async_update == FALSE)
2877                 xpt_action_default((union ccb *)cts);
2878 }
2879
2880 static void
2881 scsi_toggle_tags(struct cam_path *path)
2882 {
2883         struct cam_ed *dev;
2884
2885         /*
2886          * Give controllers a chance to renegotiate
2887          * before starting tag operations.  We
2888          * "toggle" tagged queuing off then on
2889          * which causes the tag enable command delay
2890          * counter to come into effect.
2891          */
2892         dev = path->device;
2893         if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
2894          || ((dev->inq_flags & SID_CmdQue) != 0
2895           && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
2896                 struct ccb_trans_settings cts;
2897
2898                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
2899                 cts.protocol = PROTO_SCSI;
2900                 cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
2901                 cts.transport = XPORT_UNSPECIFIED;
2902                 cts.transport_version = XPORT_VERSION_UNSPECIFIED;
2903                 cts.proto_specific.scsi.flags = 0;
2904                 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
2905                 scsi_set_transfer_settings(&cts, path,
2906                                           /*async_update*/TRUE);
2907                 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
2908                 scsi_set_transfer_settings(&cts, path,
2909                                           /*async_update*/TRUE);
2910         }
2911 }
2912
2913 /*
2914  * Handle any per-device event notifications that require action by the XPT.
2915  */
2916 static void
2917 scsi_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
2918               struct cam_ed *device, void *async_arg)
2919 {
2920         cam_status status;
2921         struct cam_path newpath;
2922
2923         /*
2924          * We only need to handle events for real devices.
2925          */
2926         if (target->target_id == CAM_TARGET_WILDCARD
2927          || device->lun_id == CAM_LUN_WILDCARD)
2928                 return;
2929
2930         /*
2931          * We need our own path with wildcards expanded to
2932          * handle certain types of events.
2933          */
2934         if ((async_code == AC_SENT_BDR)
2935          || (async_code == AC_BUS_RESET)
2936          || (async_code == AC_INQ_CHANGED))
2937                 status = xpt_compile_path(&newpath, NULL,
2938                                           bus->path_id,
2939                                           target->target_id,
2940                                           device->lun_id);
2941         else
2942                 status = CAM_REQ_CMP_ERR;
2943
2944         if (status == CAM_REQ_CMP) {
2945
2946                 /*
2947                  * Allow transfer negotiation to occur in a
2948                  * tag free environment and after settle delay.
2949                  */
2950                 if (async_code == AC_SENT_BDR
2951                  || async_code == AC_BUS_RESET) {
2952                         cam_freeze_devq(&newpath);
2953                         cam_release_devq(&newpath,
2954                                 RELSIM_RELEASE_AFTER_TIMEOUT,
2955                                 /*reduction*/0,
2956                                 /*timeout*/scsi_delay,
2957                                 /*getcount_only*/0);
2958                         scsi_toggle_tags(&newpath);
2959                 }
2960
2961                 if (async_code == AC_INQ_CHANGED) {
2962                         /*
2963                          * We've sent a start unit command, or
2964                          * something similar to a device that
2965                          * may have caused its inquiry data to
2966                          * change. So we re-scan the device to
2967                          * refresh the inquiry data for it.
2968                          */
2969                         scsi_scan_lun(newpath.periph, &newpath,
2970                                      CAM_EXPECT_INQ_CHANGE, NULL);
2971                 }
2972                 xpt_release_path(&newpath);
2973         } else if (async_code == AC_LOST_DEVICE &&
2974             (device->flags & CAM_DEV_UNCONFIGURED) == 0) {
2975                 device->flags |= CAM_DEV_UNCONFIGURED;
2976                 xpt_release_device(device);
2977         } else if (async_code == AC_TRANSFER_NEG) {
2978                 struct ccb_trans_settings *settings;
2979                 struct cam_path path;
2980
2981                 settings = (struct ccb_trans_settings *)async_arg;
2982                 xpt_compile_path(&path, NULL, bus->path_id, target->target_id,
2983                                  device->lun_id);
2984                 scsi_set_transfer_settings(settings, &path,
2985                                           /*async_update*/TRUE);
2986                 xpt_release_path(&path);
2987         }
2988 }
2989
2990 static void
2991 scsi_announce_periph(struct cam_periph *periph)
2992 {
2993         struct  ccb_pathinq cpi;
2994         struct  ccb_trans_settings cts;
2995         struct  cam_path *path = periph->path;
2996         u_int   speed;
2997         u_int   freq;
2998         u_int   mb;
2999
3000         cam_periph_assert(periph, MA_OWNED);
3001
3002         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NORMAL);
3003         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
3004         cts.type = CTS_TYPE_CURRENT_SETTINGS;
3005         xpt_action((union ccb*)&cts);
3006         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP)
3007                 return;
3008         /* Ask the SIM for its base transfer speed */
3009         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL);
3010         cpi.ccb_h.func_code = XPT_PATH_INQ;
3011         xpt_action((union ccb *)&cpi);
3012         /* Report connection speed */
3013         speed = cpi.base_transfer_speed;
3014         freq = 0;
3015         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
3016                 struct  ccb_trans_settings_spi *spi =
3017                     &cts.xport_specific.spi;
3018
3019                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
3020                   && spi->sync_offset != 0) {
3021                         freq = scsi_calc_syncsrate(spi->sync_period);
3022                         speed = freq;
3023                 }
3024                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
3025                         speed *= (0x01 << spi->bus_width);
3026         }
3027         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
3028                 struct  ccb_trans_settings_fc *fc =
3029                     &cts.xport_specific.fc;
3030
3031                 if (fc->valid & CTS_FC_VALID_SPEED)
3032                         speed = fc->bitrate;
3033         }
3034         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SAS) {
3035                 struct  ccb_trans_settings_sas *sas =
3036                     &cts.xport_specific.sas;
3037
3038                 if (sas->valid & CTS_SAS_VALID_SPEED)
3039                         speed = sas->bitrate;
3040         }
3041         mb = speed / 1000;
3042         if (mb > 0)
3043                 printf("%s%d: %d.%03dMB/s transfers",
3044                        periph->periph_name, periph->unit_number,
3045                        mb, speed % 1000);
3046         else
3047                 printf("%s%d: %dKB/s transfers", periph->periph_name,
3048                        periph->unit_number, speed);
3049         /* Report additional information about SPI connections */
3050         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
3051                 struct  ccb_trans_settings_spi *spi;
3052
3053                 spi = &cts.xport_specific.spi;
3054                 if (freq != 0) {
3055                         printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
3056                                freq % 1000,
3057                                (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
3058                              ? " DT" : "",
3059                                spi->sync_offset);
3060                 }
3061                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
3062                  && spi->bus_width > 0) {
3063                         if (freq != 0) {
3064                                 printf(", ");
3065                         } else {
3066                                 printf(" (");
3067                         }
3068                         printf("%dbit)", 8 * (0x01 << spi->bus_width));
3069                 } else if (freq != 0) {
3070                         printf(")");
3071                 }
3072         }
3073         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
3074                 struct  ccb_trans_settings_fc *fc;
3075
3076                 fc = &cts.xport_specific.fc;
3077                 if (fc->valid & CTS_FC_VALID_WWNN)
3078                         printf(" WWNN 0x%llx", (long long) fc->wwnn);
3079                 if (fc->valid & CTS_FC_VALID_WWPN)
3080                         printf(" WWPN 0x%llx", (long long) fc->wwpn);
3081                 if (fc->valid & CTS_FC_VALID_PORT)
3082                         printf(" PortID 0x%x", fc->port);
3083         }
3084         printf("\n");
3085 }
3086