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 TUNABLE_INT("kern.cam.cam_srch_hi", &cam_srch_hi);
  82 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS);
  83 SYSCTL_PROC(_kern_cam, OID_AUTO, cam_srch_hi, CTLTYPE_INT|CTLFLAG_RW, 0, 0,
  84     sysctl_cam_search_luns, "I",
  85     "allow search above LUN 7 for SCSI3 and greater devices");
  86
  87 #define CAM_SCSI2_MAXLUN        8
  88 #define CAM_CAN_GET_SIMPLE_LUN(x, i)                            \
  89         ((((x)->luns[i].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==  \
  90         RPL_LUNDATA_ATYP_PERIPH) ||                             \
  91         (((x)->luns[i].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==   \
  92         RPL_LUNDATA_ATYP_FLAT))
  93 #define CAM_GET_SIMPLE_LUN(lp, i, lval)                                 \
  94         if (((lp)->luns[(i)].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==     \
  95             RPL_LUNDATA_ATYP_PERIPH) {                                  \
  96                 (lval) = (lp)->luns[(i)].lundata[1];                    \
  97         } else {                                                        \
  98                 (lval) = (lp)->luns[(i)].lundata[0];                    \
  99                 (lval) &= RPL_LUNDATA_FLAT_LUN_MASK;                    \
 100                 (lval) <<= 8;                                           \
 101                 (lval) |=  (lp)->luns[(i)].lundata[1];                  \
 102         }
 103 #define CAM_GET_LUN(lp, i, lval)                                        \
 104         (lval) = scsi_4btoul((lp)->luns[(i)].lundata);                  \
 105         (lval) = ((lval) >> 16) | ((lval) << 16);
 106 #define CAM_LUN_ONLY_32BITS(lp, i)                              \
 107         (scsi_4btoul(&((lp)->luns[(i)].lundata[4])) == 0)
 108
 109 /*
 110  * If we're not quirked to search <= the first 8 luns
 111  * and we are either quirked to search above lun 8,
 112  * or we're > SCSI-2 and we've enabled hilun searching,
 113  * or we're > SCSI-2 and the last lun was a success,
 114  * we can look for luns above lun 8.
 115  */
 116 #define CAN_SRCH_HI_SPARSE(dv)                                  \
 117   (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0)         \
 118   && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS)               \
 119   || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
 120
 121 #define CAN_SRCH_HI_DENSE(dv)                                   \
 122   (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0)         \
 123   && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS)               \
 124   || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
 125
 126 static periph_init_t probe_periph_init;
 127
 128 static struct periph_driver probe_driver =
 129 {
 130         probe_periph_init, "probe",
 131         TAILQ_HEAD_INITIALIZER(probe_driver.units), /* generation */ 0,
 132         CAM_PERIPH_DRV_EARLY
 133 };
 134
 135 PERIPHDRIVER_DECLARE(probe, probe_driver);
 136
 137 typedef enum {
 138         PROBE_TUR,
 139         PROBE_INQUIRY,  /* this counts as DV0 for Basic Domain Validation */
 140         PROBE_FULL_INQUIRY,
 141         PROBE_REPORT_LUNS,
 142         PROBE_MODE_SENSE,
 143         PROBE_SUPPORTED_VPD_LIST,
 144         PROBE_DEVICE_ID,
 145         PROBE_SERIAL_NUM,
 146         PROBE_TUR_FOR_NEGOTIATION,
 147         PROBE_INQUIRY_BASIC_DV1,
 148         PROBE_INQUIRY_BASIC_DV2,
 149         PROBE_DV_EXIT,
 150         PROBE_DONE,
 151         PROBE_INVALID
 152 } probe_action;
 153
 154 static char *probe_action_text[] = {
 155         "PROBE_TUR",
 156         "PROBE_INQUIRY",
 157         "PROBE_FULL_INQUIRY",
 158         "PROBE_REPORT_LUNS",
 159         "PROBE_MODE_SENSE",
 160         "PROBE_SUPPORTED_VPD_LIST",
 161         "PROBE_DEVICE_ID",
 162         "PROBE_SERIAL_NUM",
 163         "PROBE_TUR_FOR_NEGOTIATION",
 164         "PROBE_INQUIRY_BASIC_DV1",
 165         "PROBE_INQUIRY_BASIC_DV2",
 166         "PROBE_DV_EXIT",
 167         "PROBE_DONE",
 168         "PROBE_INVALID"
 169 };
 170
 171 #define PROBE_SET_ACTION(softc, newaction)      \
 172 do {                                                                    \
 173         char **text;                                                    \
 174         text = probe_action_text;                                       \
 175         CAM_DEBUG((softc)->periph->path, CAM_DEBUG_PROBE,               \
 176             ("Probe %s to %s\n", text[(softc)->action],                 \
 177             text[(newaction)]));                                        \
 178         (softc)->action = (newaction);                                  \
 179 } while(0)
 180
 181 typedef enum {
 182         PROBE_INQUIRY_CKSUM     = 0x01,
 183         PROBE_SERIAL_CKSUM      = 0x02,
 184         PROBE_NO_ANNOUNCE       = 0x04,
 185         PROBE_EXTLUN            = 0x08
 186 } probe_flags;
 187
 188 typedef struct {
 189         TAILQ_HEAD(, ccb_hdr) request_ccbs;
 190         probe_action    action;
 191         union ccb       saved_ccb;
 192         probe_flags     flags;
 193         MD5_CTX         context;
 194         u_int8_t        digest[16];
 195         struct cam_periph *periph;
 196 } probe_softc;
 197
 198 static const char quantum[] = "QUANTUM";
 199 static const char sony[] = "SONY";
 200 static const char west_digital[] = "WDIGTL";
 201 static const char samsung[] = "SAMSUNG";
 202 static const char seagate[] = "SEAGATE";
 203 static const char microp[] = "MICROP";
 204
 205 static struct scsi_quirk_entry scsi_quirk_table[] =
 206 {
 207         {
 208                 /* Reports QUEUE FULL for temporary resource shortages */
 209                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
 210                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 211         },
 212         {
 213                 /* Reports QUEUE FULL for temporary resource shortages */
 214                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
 215                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 216         },
 217         {
 218                 /* Reports QUEUE FULL for temporary resource shortages */
 219                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
 220                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 221         },
 222         {
 223                 /* Broken tagged queuing drive */
 224                 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
 225                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 226         },
 227         {
 228                 /* Broken tagged queuing drive */
 229                 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
 230                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 231         },
 232         {
 233                 /* Broken tagged queuing drive */
 234                 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
 235                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 236         },
 237         {
 238                 /*
 239                  * Unfortunately, the Quantum Atlas III has the same
 240                  * problem as the Atlas II drives above.
 241                  * Reported by: "Johan Granlund" <johan@granlund.nu>
 242                  *
 243                  * For future reference, the drive with the problem was:
 244                  * QUANTUM QM39100TD-SW N1B0
 245                  *
 246                  * It's possible that Quantum will fix the problem in later
 247                  * firmware revisions.  If that happens, the quirk entry
 248                  * will need to be made specific to the firmware revisions
 249                  * with the problem.
 250                  *
 251                  */
 252                 /* Reports QUEUE FULL for temporary resource shortages */
 253                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
 254                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 255         },
 256         {
 257                 /*
 258                  * 18 Gig Atlas III, same problem as the 9G version.
 259                  * Reported by: Andre Albsmeier
 260                  *              <andre.albsmeier@mchp.siemens.de>
 261                  *
 262                  * For future reference, the drive with the problem was:
 263                  * QUANTUM QM318000TD-S N491
 264                  */
 265                 /* Reports QUEUE FULL for temporary resource shortages */
 266                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
 267                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 268         },
 269         {
 270                 /*
 271                  * Broken tagged queuing drive
 272                  * Reported by: Bret Ford <bford@uop.cs.uop.edu>
 273                  *         and: Martin Renters <martin@tdc.on.ca>
 274                  */
 275                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
 276                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 277         },
 278                 /*
 279                  * The Seagate Medalist Pro drives have very poor write
 280                  * performance with anything more than 2 tags.
 281                  *
 282                  * Reported by:  Paul van der Zwan <paulz@trantor.xs4all.nl>
 283                  * Drive:  <SEAGATE ST36530N 1444>
 284                  *
 285                  * Reported by:  Jeremy Lea <reg@shale.csir.co.za>
 286                  * Drive:  <SEAGATE ST34520W 1281>
 287                  *
 288                  * No one has actually reported that the 9G version
 289                  * (ST39140*) of the Medalist Pro has the same problem, but
 290                  * we're assuming that it does because the 4G and 6.5G
 291                  * versions of the drive are broken.
 292                  */
 293         {
 294                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
 295                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 296         },
 297         {
 298                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
 299                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 300         },
 301         {
 302                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
 303                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 304         },
 305         {
 306                 /*
 307                  * Experiences command timeouts under load with a
 308                  * tag count higher than 55.
 309                  */
 310                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST3146855LW", "*"},
 311                 /*quirks*/0, /*mintags*/2, /*maxtags*/55
 312         },
 313         {
 314                 /*
 315                  * Slow when tagged queueing is enabled.  Write performance
 316                  * steadily drops off with more and more concurrent
 317                  * transactions.  Best sequential write performance with
 318                  * tagged queueing turned off and write caching turned on.
 319                  *
 320                  * PR:  kern/10398
 321                  * Submitted by:  Hideaki Okada <hokada@isl.melco.co.jp>
 322                  * Drive:  DCAS-34330 w/ "S65A" firmware.
 323                  *
 324                  * The drive with the problem had the "S65A" firmware
 325                  * revision, and has also been reported (by Stephen J.
 326                  * Roznowski <sjr@home.net>) for a drive with the "S61A"
 327                  * firmware revision.
 328                  *
 329                  * Although no one has reported problems with the 2 gig
 330                  * version of the DCAS drive, the assumption is that it
 331                  * has the same problems as the 4 gig version.  Therefore
 332                  * this quirk entries disables tagged queueing for all
 333                  * DCAS drives.
 334                  */
 335                 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
 336                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 337         },
 338         {
 339                 /* Broken tagged queuing drive */
 340                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
 341                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 342         },
 343         {
 344                 /* Broken tagged queuing drive */
 345                 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
 346                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 347         },
 348         {
 349                 /* This does not support other than LUN 0 */
 350                 { T_DIRECT, SIP_MEDIA_FIXED, "VMware*", "*", "*" },
 351                 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
 352         },
 353         {
 354                 /*
 355                  * Broken tagged queuing drive.
 356                  * Submitted by:
 357                  * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
 358                  * in PR kern/9535
 359                  */
 360                 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
 361                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 362         },
 363         {
 364                 /*
 365                  * Slow when tagged queueing is enabled. (1.5MB/sec versus
 366                  * 8MB/sec.)
 367                  * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
 368                  * Best performance with these drives is achieved with
 369                  * tagged queueing turned off, and write caching turned on.
 370                  */
 371                 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
 372                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 373         },
 374         {
 375                 /*
 376                  * Slow when tagged queueing is enabled. (1.5MB/sec versus
 377                  * 8MB/sec.)
 378                  * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
 379                  * Best performance with these drives is achieved with
 380                  * tagged queueing turned off, and write caching turned on.
 381                  */
 382                 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
 383                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 384         },
 385         {
 386                 /*
 387                  * Doesn't handle queue full condition correctly,
 388                  * so we need to limit maxtags to what the device
 389                  * can handle instead of determining this automatically.
 390                  */
 391                 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
 392                 /*quirks*/0, /*mintags*/2, /*maxtags*/32
 393         },
 394         {
 395                 /* Really only one LUN */
 396                 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
 397                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 398         },
 399         {
 400                 /* I can't believe we need a quirk for DPT volumes. */
 401                 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
 402                 CAM_QUIRK_NOLUNS,
 403                 /*mintags*/0, /*maxtags*/255
 404         },
 405         {
 406                 /*
 407                  * Many Sony CDROM drives don't like multi-LUN probing.
 408                  */
 409                 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
 410                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 411         },
 412         {
 413                 /*
 414                  * This drive doesn't like multiple LUN probing.
 415                  * Submitted by:  Parag Patel <parag@cgt.com>
 416                  */
 417                 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R   CDU9*", "*" },
 418                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 419         },
 420         {
 421                 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
 422                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 423         },
 424         {
 425                 /*
 426                  * The 8200 doesn't like multi-lun probing, and probably
 427                  * don't like serial number requests either.
 428                  */
 429                 {
 430                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
 431                         "EXB-8200*", "*"
 432                 },
 433                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 434         },
 435         {
 436                 /*
 437                  * Let's try the same as above, but for a drive that says
 438                  * it's an IPL-6860 but is actually an EXB 8200.
 439                  */
 440                 {
 441                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
 442                         "IPL-6860*", "*"
 443                 },
 444                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 445         },
 446         {
 447                 /*
 448                  * These Hitachi drives don't like multi-lun probing.
 449                  * The PR submitter has a DK319H, but says that the Linux
 450                  * kernel has a similar work-around for the DK312 and DK314,
 451                  * so all DK31* drives are quirked here.
 452                  * PR:            misc/18793
 453                  * Submitted by:  Paul Haddad <paul@pth.com>
 454                  */
 455                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
 456                 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
 457         },
 458         {
 459                 /*
 460                  * The Hitachi CJ series with J8A8 firmware apparantly has
 461                  * problems with tagged commands.
 462                  * PR: 23536
 463                  * Reported by: amagai@nue.org
 464                  */
 465                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
 466                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 467         },
 468         {
 469                 /*
 470                  * These are the large storage arrays.
 471                  * Submitted by:  William Carrel <william.carrel@infospace.com>
 472                  */
 473                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
 474                 CAM_QUIRK_HILUNS, 2, 1024
 475         },
 476         {
 477                 /*
 478                  * This old revision of the TDC3600 is also SCSI-1, and
 479                  * hangs upon serial number probing.
 480                  */
 481                 {
 482                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
 483                         " TDC 3600", "U07:"
 484                 },
 485                 CAM_QUIRK_NOVPDS, /*mintags*/0, /*maxtags*/0
 486         },
 487         {
 488                 /*
 489                  * Would repond to all LUNs if asked for.
 490                  */
 491                 {
 492                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
 493                         "CP150", "*"
 494                 },
 495                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 496         },
 497         {
 498                 /*
 499                  * Would repond to all LUNs if asked for.
 500                  */
 501                 {
 502                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
 503                         "96X2*", "*"
 504                 },
 505                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 506         },
 507         {
 508                 /* Submitted by: Matthew Dodd <winter@jurai.net> */
 509                 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
 510                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 511         },
 512         {
 513                 /* Submitted by: Matthew Dodd <winter@jurai.net> */
 514                 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
 515                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 516         },
 517         {
 518                 /* TeraSolutions special settings for TRC-22 RAID */
 519                 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
 520                   /*quirks*/0, /*mintags*/55, /*maxtags*/255
 521         },
 522         {
 523                 /* Veritas Storage Appliance */
 524                 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
 525                   CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
 526         },
 527         {
 528                 /*
 529                  * Would respond to all LUNs.  Device type and removable
 530                  * flag are jumper-selectable.
 531                  */
 532                 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
 533                   "Tahiti 1", "*"
 534                 },
 535                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 536         },
 537         {
 538                 /* EasyRAID E5A aka. areca ARC-6010 */
 539                 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
 540                   CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
 541         },
 542         {
 543                 { T_ENCLOSURE, SIP_MEDIA_FIXED, "DP", "BACKPLANE", "*" },
 544                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 545         },
 546         {
 547                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "Garmin", "*", "*" },
 548                 CAM_QUIRK_NORPTLUNS, /*mintags*/2, /*maxtags*/255
 549         },
 550         {
 551                 /* Default tagged queuing parameters for all devices */
 552                 {
 553                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 554                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 555                 },
 556                 /*quirks*/0, /*mintags*/2, /*maxtags*/255
 557         },
 558 };
 559
 560 static const int scsi_quirk_table_size =
 561         sizeof(scsi_quirk_table) / sizeof(*scsi_quirk_table);
 562
 563 static cam_status       proberegister(struct cam_periph *periph,
 564                                       void *arg);
 565 static void      probeschedule(struct cam_periph *probe_periph);
 566 static void      probestart(struct cam_periph *periph, union ccb *start_ccb);
 567 static void      proberequestdefaultnegotiation(struct cam_periph *periph);
 568 static int       proberequestbackoff(struct cam_periph *periph,
 569                                      struct cam_ed *device);
 570 static void      probedone(struct cam_periph *periph, union ccb *done_ccb);
 571 static void      probe_purge_old(struct cam_path *path,
 572                                  struct scsi_report_luns_data *new,
 573                                  probe_flags flags);
 574 static void      probecleanup(struct cam_periph *periph);
 575 static void      scsi_find_quirk(struct cam_ed *device);
 576 static void      scsi_scan_bus(struct cam_periph *periph, union ccb *ccb);
 577 static void      scsi_scan_lun(struct cam_periph *periph,
 578                                struct cam_path *path, cam_flags flags,
 579                                union ccb *ccb);
 580 static void      xptscandone(struct cam_periph *periph, union ccb *done_ccb);
 581 static struct cam_ed *
 582                  scsi_alloc_device(struct cam_eb *bus, struct cam_et *target,
 583                                    lun_id_t lun_id);
 584 static void      scsi_devise_transport(struct cam_path *path);
 585 static void      scsi_set_transfer_settings(struct ccb_trans_settings *cts,
 586                                             struct cam_path *path,
 587                                             int async_update);
 588 static void      scsi_toggle_tags(struct cam_path *path);
 589 static void      scsi_dev_async(u_int32_t async_code,
 590                                 struct cam_eb *bus,
 591                                 struct cam_et *target,
 592                                 struct cam_ed *device,
 593                                 void *async_arg);
 594 static void      scsi_action(union ccb *start_ccb);
 595 static void      scsi_announce_periph(struct cam_periph *periph);
 596
 597 static struct xpt_xport scsi_xport = {
 598         .alloc_device = scsi_alloc_device,
 599         .action = scsi_action,
 600         .async = scsi_dev_async,
 601         .announce = scsi_announce_periph,
 602 };
 603
 604 struct xpt_xport *
 605 scsi_get_xport(void)
 606 {
 607         return (&scsi_xport);
 608 }
 609
 610 static void
 611 probe_periph_init()
 612 {
 613 }
 614
 615 static cam_status
 616 proberegister(struct cam_periph *periph, void *arg)
 617 {
 618         union ccb *request_ccb; /* CCB representing the probe request */
 619         cam_status status;
 620         probe_softc *softc;
 621
 622         request_ccb = (union ccb *)arg;
 623         if (request_ccb == NULL) {
 624                 printf("proberegister: no probe CCB, "
 625                        "can't register device\n");
 626                 return(CAM_REQ_CMP_ERR);
 627         }
 628
 629         softc = (probe_softc *)malloc(sizeof(*softc), M_CAMXPT, M_NOWAIT);
 630
 631         if (softc == NULL) {
 632                 printf("proberegister: Unable to probe new device. "
 633                        "Unable to allocate softc\n");
 634                 return(CAM_REQ_CMP_ERR);
 635         }
 636         TAILQ_INIT(&softc->request_ccbs);
 637         TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
 638                           periph_links.tqe);
 639         softc->flags = 0;
 640         periph->softc = softc;
 641         softc->periph = periph;
 642         softc->action = PROBE_INVALID;
 643         status = cam_periph_acquire(periph);
 644         if (status != CAM_REQ_CMP) {
 645                 return (status);
 646         }
 647         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe started\n"));
 648         scsi_devise_transport(periph->path);
 649
 650         /*
 651          * Ensure we've waited at least a bus settle
 652          * delay before attempting to probe the device.
 653          * For HBAs that don't do bus resets, this won't make a difference.
 654          */
 655         cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
 656                                       scsi_delay);
 657         probeschedule(periph);
 658         return(CAM_REQ_CMP);
 659 }
 660
 661 static void
 662 probeschedule(struct cam_periph *periph)
 663 {
 664         struct ccb_pathinq cpi;
 665         union ccb *ccb;
 666         probe_softc *softc;
 667
 668         softc = (probe_softc *)periph->softc;
 669         ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
 670
 671         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
 672         cpi.ccb_h.func_code = XPT_PATH_INQ;
 673         xpt_action((union ccb *)&cpi);
 674
 675         /*
 676          * If a device has gone away and another device, or the same one,
 677          * is back in the same place, it should have a unit attention
 678          * condition pending.  It will not report the unit attention in
 679          * response to an inquiry, which may leave invalid transfer
 680          * negotiations in effect.  The TUR will reveal the unit attention
 681          * condition.  Only send the TUR for lun 0, since some devices
 682          * will get confused by commands other than inquiry to non-existent
 683          * luns.  If you think a device has gone away start your scan from
 684          * lun 0.  This will insure that any bogus transfer settings are
 685          * invalidated.
 686          *
 687          * If we haven't seen the device before and the controller supports
 688          * some kind of transfer negotiation, negotiate with the first
 689          * sent command if no bus reset was performed at startup.  This
 690          * ensures that the device is not confused by transfer negotiation
 691          * settings left over by loader or BIOS action.
 692          */
 693         if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 694          && (ccb->ccb_h.target_lun == 0)) {
 695                 PROBE_SET_ACTION(softc, PROBE_TUR);
 696         } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
 697               && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
 698                 proberequestdefaultnegotiation(periph);
 699                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
 700         } else {
 701                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
 702         }
 703
 704         if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
 705                 softc->flags |= PROBE_NO_ANNOUNCE;
 706         else
 707                 softc->flags &= ~PROBE_NO_ANNOUNCE;
 708
 709         if (cpi.hba_misc & PIM_EXTLUNS)
 710                 softc->flags |= PROBE_EXTLUN;
 711         else
 712                 softc->flags &= ~PROBE_EXTLUN;
 713
 714         xpt_schedule(periph, CAM_PRIORITY_XPT);
 715 }
 716
 717 static void
 718 probestart(struct cam_periph *periph, union ccb *start_ccb)
 719 {
 720         /* Probe the device that our peripheral driver points to */
 721         struct ccb_scsiio *csio;
 722         probe_softc *softc;
 723
 724         CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
 725
 726         softc = (probe_softc *)periph->softc;
 727         csio = &start_ccb->csio;
 728 again:
 729
 730         switch (softc->action) {
 731         case PROBE_TUR:
 732         case PROBE_TUR_FOR_NEGOTIATION:
 733         case PROBE_DV_EXIT:
 734         {
 735                 scsi_test_unit_ready(csio,
 736                                      /*retries*/4,
 737                                      probedone,
 738                                      MSG_SIMPLE_Q_TAG,
 739                                      SSD_FULL_SIZE,
 740                                      /*timeout*/60000);
 741                 break;
 742         }
 743         case PROBE_INQUIRY:
 744         case PROBE_FULL_INQUIRY:
 745         case PROBE_INQUIRY_BASIC_DV1:
 746         case PROBE_INQUIRY_BASIC_DV2:
 747         {
 748                 u_int inquiry_len;
 749                 struct scsi_inquiry_data *inq_buf;
 750
 751                 inq_buf = &periph->path->device->inq_data;
 752
 753                 /*
 754                  * If the device is currently configured, we calculate an
 755                  * MD5 checksum of the inquiry data, and if the serial number
 756                  * length is greater than 0, add the serial number data
 757                  * into the checksum as well.  Once the inquiry and the
 758                  * serial number check finish, we attempt to figure out
 759                  * whether we still have the same device.
 760                  */
 761                 if (((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 762                  && ((softc->flags & PROBE_INQUIRY_CKSUM) == 0)) {
 763
 764                         MD5Init(&softc->context);
 765                         MD5Update(&softc->context, (unsigned char *)inq_buf,
 766                                   sizeof(struct scsi_inquiry_data));
 767                         softc->flags |= PROBE_INQUIRY_CKSUM;
 768                         if (periph->path->device->serial_num_len > 0) {
 769                                 MD5Update(&softc->context,
 770                                           periph->path->device->serial_num,
 771                                           periph->path->device->serial_num_len);
 772                                 softc->flags |= PROBE_SERIAL_CKSUM;
 773                         }
 774                         MD5Final(softc->digest, &softc->context);
 775                 }
 776
 777                 if (softc->action == PROBE_INQUIRY)
 778                         inquiry_len = SHORT_INQUIRY_LENGTH;
 779                 else
 780                         inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf);
 781
 782                 /*
 783                  * Some parallel SCSI devices fail to send an
 784                  * ignore wide residue message when dealing with
 785                  * odd length inquiry requests.  Round up to be
 786                  * safe.
 787                  */
 788                 inquiry_len = roundup2(inquiry_len, 2);
 789
 790                 if (softc->action == PROBE_INQUIRY_BASIC_DV1
 791                  || softc->action == PROBE_INQUIRY_BASIC_DV2) {
 792                         inq_buf = malloc(inquiry_len, M_CAMXPT, M_NOWAIT);
 793                 }
 794                 if (inq_buf == NULL) {
 795                         xpt_print(periph->path, "malloc failure- skipping Basic"
 796                             "Domain Validation\n");
 797                         PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
 798                         scsi_test_unit_ready(csio,
 799                                              /*retries*/4,
 800                                              probedone,
 801                                              MSG_SIMPLE_Q_TAG,
 802                                              SSD_FULL_SIZE,
 803                                              /*timeout*/60000);
 804                         break;
 805                 }
 806                 scsi_inquiry(csio,
 807                              /*retries*/4,
 808                              probedone,
 809                              MSG_SIMPLE_Q_TAG,
 810                              (u_int8_t *)inq_buf,
 811                              inquiry_len,
 812                              /*evpd*/FALSE,
 813                              /*page_code*/0,
 814                              SSD_MIN_SIZE,
 815                              /*timeout*/60 * 1000);
 816                 break;
 817         }
 818         case PROBE_REPORT_LUNS:
 819         {
 820                 void *rp;
 821
 822                 rp = malloc(periph->path->target->rpl_size,
 823                     M_CAMXPT, M_NOWAIT | M_ZERO);
 824                 if (rp == NULL) {
 825                         struct scsi_inquiry_data *inq_buf;
 826                         inq_buf = &periph->path->device->inq_data;
 827                         xpt_print(periph->path,
 828                             "Unable to alloc report luns storage\n");
 829                         if (INQ_DATA_TQ_ENABLED(inq_buf))
 830                                 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
 831                         else
 832                                 PROBE_SET_ACTION(softc,
 833                                     PROBE_SUPPORTED_VPD_LIST);
 834                         goto again;
 835                 }
 836                 scsi_report_luns(csio, 5, probedone, MSG_SIMPLE_Q_TAG,
 837                     RPL_REPORT_DEFAULT, rp, periph->path->target->rpl_size,
 838                     SSD_FULL_SIZE, 60000); break;
 839                 break;
 840         }
 841         case PROBE_MODE_SENSE:
 842         {
 843                 void  *mode_buf;
 844                 int    mode_buf_len;
 845
 846                 mode_buf_len = sizeof(struct scsi_mode_header_6)
 847                              + sizeof(struct scsi_mode_blk_desc)
 848                              + sizeof(struct scsi_control_page);
 849                 mode_buf = malloc(mode_buf_len, M_CAMXPT, M_NOWAIT);
 850                 if (mode_buf != NULL) {
 851                         scsi_mode_sense(csio,
 852                                         /*retries*/4,
 853                                         probedone,
 854                                         MSG_SIMPLE_Q_TAG,
 855                                         /*dbd*/FALSE,
 856                                         SMS_PAGE_CTRL_CURRENT,
 857                                         SMS_CONTROL_MODE_PAGE,
 858                                         mode_buf,
 859                                         mode_buf_len,
 860                                         SSD_FULL_SIZE,
 861                                         /*timeout*/60000);
 862                         break;
 863                 }
 864                 xpt_print(periph->path, "Unable to mode sense control page - "
 865                     "malloc failure\n");
 866                 PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
 867         }
 868         /* FALLTHROUGH */
 869         case PROBE_SUPPORTED_VPD_LIST:
 870         {
 871                 struct scsi_vpd_supported_page_list *vpd_list;
 872                 struct cam_ed *device;
 873
 874                 vpd_list = NULL;
 875                 device = periph->path->device;
 876
 877                 if ((SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOVPDS) == 0)
 878                         vpd_list = malloc(sizeof(*vpd_list), M_CAMXPT,
 879                             M_NOWAIT | M_ZERO);
 880
 881                 if (vpd_list != NULL) {
 882                         scsi_inquiry(csio,
 883                                      /*retries*/4,
 884                                      probedone,
 885                                      MSG_SIMPLE_Q_TAG,
 886                                      (u_int8_t *)vpd_list,
 887                                      sizeof(*vpd_list),
 888                                      /*evpd*/TRUE,
 889                                      SVPD_SUPPORTED_PAGE_LIST,
 890                                      SSD_MIN_SIZE,
 891                                      /*timeout*/60 * 1000);
 892                         break;
 893                 }
 894 done:
 895                 /*
 896                  * We'll have to do without, let our probedone
 897                  * routine finish up for us.
 898                  */
 899                 start_ccb->csio.data_ptr = NULL;
 900                 cam_freeze_devq(periph->path);
 901                 cam_periph_doacquire(periph);
 902                 probedone(periph, start_ccb);
 903                 return;
 904         }
 905         case PROBE_DEVICE_ID:
 906         {
 907                 struct scsi_vpd_device_id *devid;
 908
 909                 devid = NULL;
 910                 if (scsi_vpd_supported_page(periph, SVPD_DEVICE_ID))
 911                         devid = malloc(SVPD_DEVICE_ID_MAX_SIZE, M_CAMXPT,
 912                             M_NOWAIT | M_ZERO);
 913
 914                 if (devid != NULL) {
 915                         scsi_inquiry(csio,
 916                                      /*retries*/4,
 917                                      probedone,
 918                                      MSG_SIMPLE_Q_TAG,
 919                                      (uint8_t *)devid,
 920                                      SVPD_DEVICE_ID_MAX_SIZE,
 921                                      /*evpd*/TRUE,
 922                                      SVPD_DEVICE_ID,
 923                                      SSD_MIN_SIZE,
 924                                      /*timeout*/60 * 1000);
 925                         break;
 926                 }
 927                 goto done;
 928         }
 929         case PROBE_SERIAL_NUM:
 930         {
 931                 struct scsi_vpd_unit_serial_number *serial_buf;
 932                 struct cam_ed* device;
 933
 934                 serial_buf = NULL;
 935                 device = periph->path->device;
 936                 if (device->serial_num != NULL) {
 937                         free(device->serial_num, M_CAMXPT);
 938                         device->serial_num = NULL;
 939                         device->serial_num_len = 0;
 940                 }
 941
 942                 if (scsi_vpd_supported_page(periph, SVPD_UNIT_SERIAL_NUMBER))
 943                         serial_buf = (struct scsi_vpd_unit_serial_number *)
 944                                 malloc(sizeof(*serial_buf), M_CAMXPT,
 945                                     M_NOWAIT|M_ZERO);
 946
 947                 if (serial_buf != NULL) {
 948                         scsi_inquiry(csio,
 949                                      /*retries*/4,
 950                                      probedone,
 951                                      MSG_SIMPLE_Q_TAG,
 952                                      (u_int8_t *)serial_buf,
 953                                      sizeof(*serial_buf),
 954                                      /*evpd*/TRUE,
 955                                      SVPD_UNIT_SERIAL_NUMBER,
 956                                      SSD_MIN_SIZE,
 957                                      /*timeout*/60 * 1000);
 958                         break;
 959                 }
 960                 goto done;
 961         }
 962         default:
 963                 panic("probestart: invalid action state 0x%x\n", softc->action);
 964         }
 965         start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
 966         cam_periph_doacquire(periph);
 967         xpt_action(start_ccb);
 968 }
 969
 970 static void
 971 proberequestdefaultnegotiation(struct cam_periph *periph)
 972 {
 973         struct ccb_trans_settings cts;
 974
 975         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
 976         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 977         cts.type = CTS_TYPE_USER_SETTINGS;
 978         xpt_action((union ccb *)&cts);
 979         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
 980                 return;
 981         }
 982         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
 983         cts.type = CTS_TYPE_CURRENT_SETTINGS;
 984         xpt_action((union ccb *)&cts);
 985 }
 986
 987 /*
 988  * Backoff Negotiation Code- only pertinent for SPI devices.
 989  */
 990 static int
 991 proberequestbackoff(struct cam_periph *periph, struct cam_ed *device)
 992 {
 993         struct ccb_trans_settings cts;
 994         struct ccb_trans_settings_spi *spi;
 995
 996         memset(&cts, 0, sizeof (cts));
 997         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
 998         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 999         cts.type = CTS_TYPE_CURRENT_SETTINGS;
1000         xpt_action((union ccb *)&cts);
1001         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1002                 if (bootverbose) {
1003                         xpt_print(periph->path,
1004                             "failed to get current device settings\n");
1005                 }
1006                 return (0);
1007         }
1008         if (cts.transport != XPORT_SPI) {
1009                 if (bootverbose) {
1010                         xpt_print(periph->path, "not SPI transport\n");
1011                 }
1012                 return (0);
1013         }
1014         spi = &cts.xport_specific.spi;
1015
1016         /*
1017          * We cannot renegotiate sync rate if we don't have one.
1018          */
1019         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
1020                 if (bootverbose) {
1021                         xpt_print(periph->path, "no sync rate known\n");
1022                 }
1023                 return (0);
1024         }
1025
1026         /*
1027          * We'll assert that we don't have to touch PPR options- the
1028          * SIM will see what we do with period and offset and adjust
1029          * the PPR options as appropriate.
1030          */
1031
1032         /*
1033          * A sync rate with unknown or zero offset is nonsensical.
1034          * A sync period of zero means Async.
1035          */
1036         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0
1037          || spi->sync_offset == 0 || spi->sync_period == 0) {
1038                 if (bootverbose) {
1039                         xpt_print(periph->path, "no sync rate available\n");
1040                 }
1041                 return (0);
1042         }
1043
1044         if (device->flags & CAM_DEV_DV_HIT_BOTTOM) {
1045                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1046                     ("hit async: giving up on DV\n"));
1047                 return (0);
1048         }
1049
1050
1051         /*
1052          * Jump sync_period up by one, but stop at 5MHz and fall back to Async.
1053          * We don't try to remember 'last' settings to see if the SIM actually
1054          * gets into the speed we want to set. We check on the SIM telling
1055          * us that a requested speed is bad, but otherwise don't try and
1056          * check the speed due to the asynchronous and handshake nature
1057          * of speed setting.
1058          */
1059         spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET;
1060         for (;;) {
1061                 spi->sync_period++;
1062                 if (spi->sync_period >= 0xf) {
1063                         spi->sync_period = 0;
1064                         spi->sync_offset = 0;
1065                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1066                             ("setting to async for DV\n"));
1067                         /*
1068                          * Once we hit async, we don't want to try
1069                          * any more settings.
1070                          */
1071                         device->flags |= CAM_DEV_DV_HIT_BOTTOM;
1072                 } else if (bootverbose) {
1073                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1074                             ("DV: period 0x%x\n", spi->sync_period));
1075                         printf("setting period to 0x%x\n", spi->sync_period);
1076                 }
1077                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1078                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1079                 xpt_action((union ccb *)&cts);
1080                 if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1081                         break;
1082                 }
1083                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1084                     ("DV: failed to set period 0x%x\n", spi->sync_period));
1085                 if (spi->sync_period == 0) {
1086                         return (0);
1087                 }
1088         }
1089         return (1);
1090 }
1091
1092 #define CCB_COMPLETED_OK(ccb) (((ccb).status & CAM_STATUS_MASK) == CAM_REQ_CMP)
1093
1094 static void
1095 probedone(struct cam_periph *periph, union ccb *done_ccb)
1096 {
1097         probe_softc *softc;
1098         struct cam_path *path;
1099         u_int32_t  priority;
1100
1101         CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
1102
1103         softc = (probe_softc *)periph->softc;
1104         path = done_ccb->ccb_h.path;
1105         priority = done_ccb->ccb_h.pinfo.priority;
1106
1107         switch (softc->action) {
1108         case PROBE_TUR:
1109         {
1110                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1111
1112                         if (cam_periph_error(done_ccb, 0,
1113                                              SF_NO_PRINT, NULL) == ERESTART) {
1114 outr:
1115                                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1116                                 cam_release_devq(path, 0, 0, 0, FALSE);
1117                                 return;
1118                         }
1119                         else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1120                                 /* Don't wedge the queue */
1121                                 xpt_release_devq(done_ccb->ccb_h.path,
1122                                                  /*count*/1,
1123                                                  /*run_queue*/TRUE);
1124                 }
1125                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
1126                 xpt_release_ccb(done_ccb);
1127                 xpt_schedule(periph, priority);
1128 out:
1129                 /* Drop freeze taken due to CAM_DEV_QFREEZE and release. */
1130                 cam_release_devq(path, 0, 0, 0, FALSE);
1131                 cam_periph_release_locked(periph);
1132                 return;
1133         }
1134         case PROBE_INQUIRY:
1135         case PROBE_FULL_INQUIRY:
1136         {
1137                 if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
1138                         struct scsi_inquiry_data *inq_buf;
1139                         u_int8_t periph_qual;
1140
1141                         path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
1142                         scsi_find_quirk(path->device);
1143                         inq_buf = &path->device->inq_data;
1144
1145                         periph_qual = SID_QUAL(inq_buf);
1146
1147                         if (periph_qual == SID_QUAL_LU_CONNECTED) {
1148                                 u_int8_t len;
1149
1150                                 /*
1151                                  * We conservatively request only
1152                                  * SHORT_INQUIRY_LEN bytes of inquiry
1153                                  * information during our first try
1154                                  * at sending an INQUIRY. If the device
1155                                  * has more information to give,
1156                                  * perform a second request specifying
1157                                  * the amount of information the device
1158                                  * is willing to give.
1159                                  */
1160                                 len = inq_buf->additional_length
1161                                     + offsetof(struct scsi_inquiry_data,
1162                                                additional_length) + 1;
1163                                 if (softc->action == PROBE_INQUIRY
1164                                     && len > SHORT_INQUIRY_LENGTH) {
1165                                         PROBE_SET_ACTION(softc, PROBE_FULL_INQUIRY);
1166                                         xpt_release_ccb(done_ccb);
1167                                         xpt_schedule(periph, priority);
1168                                         goto out;
1169                                 }
1170
1171                                 scsi_devise_transport(path);
1172
1173                                 if (path->device->lun_id == 0 &&
1174                                     SID_ANSI_REV(inq_buf) > SCSI_REV_SPC2 &&
1175                                     (SCSI_QUIRK(path->device)->quirks &
1176                                      CAM_QUIRK_NORPTLUNS) == 0) {
1177                                         PROBE_SET_ACTION(softc,
1178                                             PROBE_REPORT_LUNS);
1179                                         /*
1180                                          * Start with room for *one* lun.
1181                                          */
1182                                         periph->path->target->rpl_size = 16;
1183                                 } else if (INQ_DATA_TQ_ENABLED(inq_buf))
1184                                         PROBE_SET_ACTION(softc,
1185                                             PROBE_MODE_SENSE);
1186                                 else
1187                                         PROBE_SET_ACTION(softc,
1188                                             PROBE_SUPPORTED_VPD_LIST);
1189
1190                                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1191                                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1192                                         xpt_acquire_device(path->device);
1193                                 }
1194                                 xpt_release_ccb(done_ccb);
1195                                 xpt_schedule(periph, priority);
1196                                 goto out;
1197                         } else if (path->device->lun_id == 0 &&
1198                             SID_ANSI_REV(inq_buf) >= SCSI_REV_SPC2 &&
1199                             (SCSI_QUIRK(path->device)->quirks &
1200                              CAM_QUIRK_NORPTLUNS) == 0) {
1201                                 PROBE_SET_ACTION(softc, PROBE_REPORT_LUNS);
1202                                 periph->path->target->rpl_size = 16;
1203                                 xpt_release_ccb(done_ccb);
1204                                 xpt_schedule(periph, priority);
1205                                 goto out;
1206                         }
1207                 } else if (cam_periph_error(done_ccb, 0,
1208                                             done_ccb->ccb_h.target_lun > 0
1209                                             ? SF_RETRY_UA|SF_QUIET_IR
1210                                             : SF_RETRY_UA,
1211                                             &softc->saved_ccb) == ERESTART) {
1212                         goto outr;
1213                 } else {
1214                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1215                                 /* Don't wedge the queue */
1216                                 xpt_release_devq(done_ccb->ccb_h.path,
1217                                     /*count*/1, /*run_queue*/TRUE);
1218                         }
1219                         path->device->flags &= ~CAM_DEV_INQUIRY_DATA_VALID;
1220                 }
1221                 /*
1222                  * If we get to this point, we got an error status back
1223                  * from the inquiry and the error status doesn't require
1224                  * automatically retrying the command.  Therefore, the
1225                  * inquiry failed.  If we had inquiry information before
1226                  * for this device, but this latest inquiry command failed,
1227                  * the device has probably gone away.  If this device isn't
1228                  * already marked unconfigured, notify the peripheral
1229                  * drivers that this device is no more.
1230                  */
1231                 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
1232                         /* Send the async notification. */
1233                         xpt_async(AC_LOST_DEVICE, path, NULL);
1234                 PROBE_SET_ACTION(softc, PROBE_INVALID);
1235
1236                 xpt_release_ccb(done_ccb);
1237                 break;
1238         }
1239         case PROBE_REPORT_LUNS:
1240         {
1241                 struct ccb_scsiio *csio;
1242                 struct scsi_report_luns_data *lp;
1243                 u_int nlun, maxlun;
1244
1245                 csio = &done_ccb->csio;
1246
1247                 lp = (struct scsi_report_luns_data *)csio->data_ptr;
1248                 nlun = scsi_4btoul(lp->length) / 8;
1249                 maxlun = (csio->dxfer_len / 8) - 1;
1250
1251                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1252                         if (cam_periph_error(done_ccb, 0,
1253                             done_ccb->ccb_h.target_lun > 0 ?
1254                             SF_RETRY_UA|SF_QUIET_IR : SF_RETRY_UA,
1255                             &softc->saved_ccb) == ERESTART) {
1256                                 goto outr;
1257                         }
1258                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1259                                 xpt_release_devq(done_ccb->ccb_h.path, 1,
1260                                     TRUE);
1261                         }
1262                         free(lp, M_CAMXPT);
1263                         lp = NULL;
1264                 } else if (nlun > maxlun) {
1265                         /*
1266                          * Reallocate and retry to cover all luns
1267                          */
1268                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1269                             ("Probe: reallocating REPORT_LUNS for %u luns\n",
1270                              nlun));
1271                         free(lp, M_CAMXPT);
1272                         path->target->rpl_size = (nlun << 3) + 8;
1273                         xpt_release_ccb(done_ccb);
1274                         xpt_schedule(periph, priority);
1275                         goto out;
1276                 } else if (nlun == 0) {
1277                         /*
1278                          * If there don't appear to be any luns, bail.
1279                          */
1280                         free(lp, M_CAMXPT);
1281                         lp = NULL;
1282                 } else {
1283                         lun_id_t lun;
1284                         int idx;
1285
1286                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1287                            ("Probe: %u lun(s) reported\n", nlun));
1288
1289                         CAM_GET_LUN(lp, 0, lun);
1290                         /*
1291                          * If the first lun is not lun 0, then either there
1292                          * is no lun 0 in the list, or the list is unsorted.
1293                          */
1294                         if (lun != 0) {
1295                                 for (idx = 0; idx < nlun; idx++) {
1296                                         CAM_GET_LUN(lp, idx, lun);
1297                                         if (lun == 0) {
1298                                                 break;
1299                                         }
1300                                 }
1301                                 if (idx != nlun) {
1302                                         uint8_t tlun[8];
1303                                         memcpy(tlun,
1304                                             lp->luns[0].lundata, 8);
1305                                         memcpy(lp->luns[0].lundata,
1306                                             lp->luns[idx].lundata, 8);
1307                                         memcpy(lp->luns[idx].lundata,
1308                                             tlun, 8);
1309                                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1310                                             ("lun 0 in position %u\n", idx));
1311                                 }
1312                         }
1313                         /*
1314                          * If we have an old lun list, We can either
1315                          * retest luns that appear to have been dropped,
1316                          * or just nuke them.  We'll opt for the latter.
1317                          * This function will also install the new list
1318                          * in the target structure.
1319                          */
1320                         probe_purge_old(path, lp, softc->flags);
1321                         lp = NULL;
1322                 }
1323                 if (path->device->flags & CAM_DEV_INQUIRY_DATA_VALID &&
1324                     SID_QUAL(&path->device->inq_data) == SID_QUAL_LU_CONNECTED) {
1325                         struct scsi_inquiry_data *inq_buf;
1326                         inq_buf = &path->device->inq_data;
1327                         if (INQ_DATA_TQ_ENABLED(inq_buf))
1328                                 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
1329                         else
1330                                 PROBE_SET_ACTION(softc,
1331                                     PROBE_SUPPORTED_VPD_LIST);
1332                         xpt_release_ccb(done_ccb);
1333                         xpt_schedule(periph, priority);
1334                         goto out;
1335                 }
1336                 if (lp) {
1337                         free(lp, M_CAMXPT);
1338                 }
1339                 PROBE_SET_ACTION(softc, PROBE_INVALID);
1340                 xpt_release_ccb(done_ccb);
1341                 break;
1342         }
1343         case PROBE_MODE_SENSE:
1344         {
1345                 struct ccb_scsiio *csio;
1346                 struct scsi_mode_header_6 *mode_hdr;
1347
1348                 csio = &done_ccb->csio;
1349                 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
1350                 if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
1351                         struct scsi_control_page *page;
1352                         u_int8_t *offset;
1353
1354                         offset = ((u_int8_t *)&mode_hdr[1])
1355                             + mode_hdr->blk_desc_len;
1356                         page = (struct scsi_control_page *)offset;
1357                         path->device->queue_flags = page->queue_flags;
1358                 } else if (cam_periph_error(done_ccb, 0,
1359                                             SF_RETRY_UA|SF_NO_PRINT,
1360                                             &softc->saved_ccb) == ERESTART) {
1361                         goto outr;
1362                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1363                         /* Don't wedge the queue */
1364                         xpt_release_devq(done_ccb->ccb_h.path,
1365                                          /*count*/1, /*run_queue*/TRUE);
1366                 }
1367                 xpt_release_ccb(done_ccb);
1368                 free(mode_hdr, M_CAMXPT);
1369                 PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
1370                 xpt_schedule(periph, priority);
1371                 goto out;
1372         }
1373         case PROBE_SUPPORTED_VPD_LIST:
1374         {
1375                 struct ccb_scsiio *csio;
1376                 struct scsi_vpd_supported_page_list *page_list;
1377
1378                 csio = &done_ccb->csio;
1379                 page_list =
1380                     (struct scsi_vpd_supported_page_list *)csio->data_ptr;
1381
1382                 if (path->device->supported_vpds != NULL) {
1383                         free(path->device->supported_vpds, M_CAMXPT);
1384                         path->device->supported_vpds = NULL;
1385                         path->device->supported_vpds_len = 0;
1386                 }
1387
1388                 if (page_list == NULL) {
1389                         /*
1390                          * Don't process the command as it was never sent
1391                          */
1392                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1393                         /* Got vpd list */
1394                         path->device->supported_vpds_len = page_list->length +
1395                             SVPD_SUPPORTED_PAGES_HDR_LEN;
1396                         path->device->supported_vpds = (uint8_t *)page_list;
1397                         xpt_release_ccb(done_ccb);
1398                         PROBE_SET_ACTION(softc, PROBE_DEVICE_ID);
1399                         xpt_schedule(periph, priority);
1400                         goto out;
1401                 } else if (cam_periph_error(done_ccb, 0,
1402                                             SF_RETRY_UA|SF_NO_PRINT,
1403                                             &softc->saved_ccb) == ERESTART) {
1404                         goto outr;
1405                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1406                         /* Don't wedge the queue */
1407                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1408                                          /*run_queue*/TRUE);
1409                 }
1410
1411                 if (page_list)
1412                         free(page_list, M_CAMXPT);
1413                 /* No VPDs available, skip to device check. */
1414                 csio->data_ptr = NULL;
1415                 goto probe_device_check;
1416         }
1417         case PROBE_DEVICE_ID:
1418         {
1419                 struct scsi_vpd_device_id *devid;
1420                 struct ccb_scsiio *csio;
1421                 uint32_t length = 0;
1422
1423                 csio = &done_ccb->csio;
1424                 devid = (struct scsi_vpd_device_id *)csio->data_ptr;
1425
1426                 /* Clean up from previous instance of this device */
1427                 if (path->device->device_id != NULL) {
1428                         path->device->device_id_len = 0;
1429                         free(path->device->device_id, M_CAMXPT);
1430                         path->device->device_id = NULL;
1431                 }
1432
1433                 if (devid == NULL) {
1434                         /* Don't process the command as it was never sent */
1435                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1436                         length = scsi_2btoul(devid->length);
1437                         if (length != 0) {
1438                                 /*
1439                                  * NB: device_id_len is actual response
1440                                  * size, not buffer size.
1441                                  */
1442                                 path->device->device_id_len = length +
1443                                     SVPD_DEVICE_ID_HDR_LEN;
1444                                 path->device->device_id = (uint8_t *)devid;
1445                         }
1446                 } else if (cam_periph_error(done_ccb, 0,
1447                                             SF_RETRY_UA,
1448                                             &softc->saved_ccb) == ERESTART) {
1449                         goto outr;
1450                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1451                         /* Don't wedge the queue */
1452                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1453                                          /*run_queue*/TRUE);
1454                 }
1455
1456                 /* Free the device id space if we don't use it */
1457                 if (devid && length == 0)
1458                         free(devid, M_CAMXPT);
1459                 xpt_release_ccb(done_ccb);
1460                 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM);
1461                 xpt_schedule(periph, priority);
1462                 goto out;
1463         }
1464
1465 probe_device_check:
1466         case PROBE_SERIAL_NUM:
1467         {
1468                 struct ccb_scsiio *csio;
1469                 struct scsi_vpd_unit_serial_number *serial_buf;
1470                 u_int32_t  priority;
1471                 int changed;
1472                 int have_serialnum;
1473
1474                 changed = 1;
1475                 have_serialnum = 0;
1476                 csio = &done_ccb->csio;
1477                 priority = done_ccb->ccb_h.pinfo.priority;
1478                 serial_buf =
1479                     (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
1480
1481                 if (serial_buf == NULL) {
1482                         /*
1483                          * Don't process the command as it was never sent
1484                          */
1485                 } else if (cam_ccb_status(done_ccb) == CAM_REQ_CMP
1486                         && (serial_buf->length > 0)) {
1487
1488                         have_serialnum = 1;
1489                         path->device->serial_num =
1490                                 (u_int8_t *)malloc((serial_buf->length + 1),
1491                                                    M_CAMXPT, M_NOWAIT);
1492                         if (path->device->serial_num != NULL) {
1493                                 memcpy(path->device->serial_num,
1494                                        serial_buf->serial_num,
1495                                        serial_buf->length);
1496                                 path->device->serial_num_len =
1497                                     serial_buf->length;
1498                                 path->device->serial_num[serial_buf->length]
1499                                     = '\0';
1500                         }
1501                 } else if (cam_periph_error(done_ccb, 0,
1502                                             SF_RETRY_UA|SF_NO_PRINT,
1503                                             &softc->saved_ccb) == ERESTART) {
1504                         goto outr;
1505                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1506                         /* Don't wedge the queue */
1507                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1508                                          /*run_queue*/TRUE);
1509                 }
1510
1511                 /*
1512                  * Let's see if we have seen this device before.
1513                  */
1514                 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
1515                         MD5_CTX context;
1516                         u_int8_t digest[16];
1517
1518                         MD5Init(&context);
1519
1520                         MD5Update(&context,
1521                                   (unsigned char *)&path->device->inq_data,
1522                                   sizeof(struct scsi_inquiry_data));
1523
1524                         if (have_serialnum)
1525                                 MD5Update(&context, serial_buf->serial_num,
1526                                           serial_buf->length);
1527
1528                         MD5Final(digest, &context);
1529                         if (bcmp(softc->digest, digest, 16) == 0)
1530                                 changed = 0;
1531
1532                         /*
1533                          * XXX Do we need to do a TUR in order to ensure
1534                          *     that the device really hasn't changed???
1535                          */
1536                         if ((changed != 0)
1537                          && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
1538                                 xpt_async(AC_LOST_DEVICE, path, NULL);
1539                 }
1540                 if (serial_buf != NULL)
1541                         free(serial_buf, M_CAMXPT);
1542
1543                 if (changed != 0) {
1544                         /*
1545                          * Now that we have all the necessary
1546                          * information to safely perform transfer
1547                          * negotiations... Controllers don't perform
1548                          * any negotiation or tagged queuing until
1549                          * after the first XPT_SET_TRAN_SETTINGS ccb is
1550                          * received.  So, on a new device, just retrieve
1551                          * the user settings, and set them as the current
1552                          * settings to set the device up.
1553                          */
1554                         proberequestdefaultnegotiation(periph);
1555                         xpt_release_ccb(done_ccb);
1556
1557                         /*
1558                          * Perform a TUR to allow the controller to
1559                          * perform any necessary transfer negotiation.
1560                          */
1561                         PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
1562                         xpt_schedule(periph, priority);
1563                         goto out;
1564                 }
1565                 xpt_release_ccb(done_ccb);
1566                 break;
1567         }
1568         case PROBE_TUR_FOR_NEGOTIATION:
1569         case PROBE_DV_EXIT:
1570                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1571                         cam_periph_error(done_ccb, 0,
1572                             SF_NO_PRINT | SF_NO_RECOVERY | SF_NO_RETRY, NULL);
1573                 }
1574                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1575                         /* Don't wedge the queue */
1576                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1577                                          /*run_queue*/TRUE);
1578                 }
1579                 /*
1580                  * Do Domain Validation for lun 0 on devices that claim
1581                  * to support Synchronous Transfer modes.
1582                  */
1583                 if (softc->action == PROBE_TUR_FOR_NEGOTIATION
1584                  && done_ccb->ccb_h.target_lun == 0
1585                  && (path->device->inq_data.flags & SID_Sync) != 0
1586                  && (path->device->flags & CAM_DEV_IN_DV) == 0) {
1587                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1588                             ("Begin Domain Validation\n"));
1589                         path->device->flags |= CAM_DEV_IN_DV;
1590                         xpt_release_ccb(done_ccb);
1591                         PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV1);
1592                         xpt_schedule(periph, priority);
1593                         goto out;
1594                 }
1595                 if (softc->action == PROBE_DV_EXIT) {
1596                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1597                             ("Leave Domain Validation\n"));
1598                 }
1599                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1600                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1601                         xpt_acquire_device(path->device);
1602                 }
1603                 path->device->flags &=
1604                     ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
1605                 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
1606                         /* Inform the XPT that a new device has been found */
1607                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1608                         xpt_action(done_ccb);
1609                         xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
1610                                   done_ccb);
1611                 }
1612                 PROBE_SET_ACTION(softc, PROBE_DONE);
1613                 xpt_release_ccb(done_ccb);
1614                 break;
1615         case PROBE_INQUIRY_BASIC_DV1:
1616         case PROBE_INQUIRY_BASIC_DV2:
1617         {
1618                 struct scsi_inquiry_data *nbuf;
1619                 struct ccb_scsiio *csio;
1620
1621                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1622                         cam_periph_error(done_ccb, 0,
1623                             SF_NO_PRINT | SF_NO_RECOVERY | SF_NO_RETRY, NULL);
1624                 }
1625                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1626                         /* Don't wedge the queue */
1627                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1628                                          /*run_queue*/TRUE);
1629                 }
1630                 csio = &done_ccb->csio;
1631                 nbuf = (struct scsi_inquiry_data *)csio->data_ptr;
1632                 if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) {
1633                         xpt_print(path,
1634                             "inquiry data fails comparison at DV%d step\n",
1635                             softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2);
1636                         if (proberequestbackoff(periph, path->device)) {
1637                                 path->device->flags &= ~CAM_DEV_IN_DV;
1638                                 PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
1639                         } else {
1640                                 /* give up */
1641                                 PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
1642                         }
1643                         free(nbuf, M_CAMXPT);
1644                         xpt_release_ccb(done_ccb);
1645                         xpt_schedule(periph, priority);
1646                         goto out;
1647                 }
1648                 free(nbuf, M_CAMXPT);
1649                 if (softc->action == PROBE_INQUIRY_BASIC_DV1) {
1650                         PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV2);
1651                         xpt_release_ccb(done_ccb);
1652                         xpt_schedule(periph, priority);
1653                         goto out;
1654                 }
1655                 if (softc->action == PROBE_INQUIRY_BASIC_DV2) {
1656                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1657                             ("Leave Domain Validation Successfully\n"));
1658                 }
1659                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1660                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1661                         xpt_acquire_device(path->device);
1662                 }
1663                 path->device->flags &=
1664                     ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
1665                 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
1666                         /* Inform the XPT that a new device has been found */
1667                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1668                         xpt_action(done_ccb);
1669                         xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
1670                                   done_ccb);
1671                 }
1672                 PROBE_SET_ACTION(softc, PROBE_DONE);
1673                 xpt_release_ccb(done_ccb);
1674                 break;
1675         }
1676         default:
1677                 panic("probedone: invalid action state 0x%x\n", softc->action);
1678         }
1679         done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
1680         TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
1681         done_ccb->ccb_h.status = CAM_REQ_CMP;
1682         xpt_done(done_ccb);
1683         if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
1684                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe completed\n"));
1685                 /* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */
1686                 cam_release_devq(path, 0, 0, 0, FALSE);
1687                 cam_periph_release_locked(periph);
1688                 cam_periph_invalidate(periph);
1689                 cam_periph_release_locked(periph);
1690         } else {
1691                 probeschedule(periph);
1692                 goto out;
1693         }
1694 }
1695
1696 static void
1697 probe_purge_old(struct cam_path *path, struct scsi_report_luns_data *new,
1698     probe_flags flags)
1699 {
1700         struct cam_path *tp;
1701         struct scsi_report_luns_data *old;
1702         u_int idx1, idx2, nlun_old, nlun_new;
1703         lun_id_t this_lun;
1704         u_int8_t *ol, *nl;
1705
1706         if (path->target == NULL) {
1707                 return;
1708         }
1709         mtx_lock(&path->target->luns_mtx);
1710         old = path->target->luns;
1711         path->target->luns = new;
1712         mtx_unlock(&path->target->luns_mtx);
1713         if (old == NULL)
1714                 return;
1715         nlun_old = scsi_4btoul(old->length) / 8;
1716         nlun_new = scsi_4btoul(new->length) / 8;
1717
1718         /*
1719          * We are not going to assume sorted lists. Deal.
1720          */
1721         for (idx1 = 0; idx1 < nlun_old; idx1++) {
1722                 ol = old->luns[idx1].lundata;
1723                 for (idx2 = 0; idx2 < nlun_new; idx2++) {
1724                         nl = new->luns[idx2].lundata;
1725                         if (memcmp(nl, ol, 8) == 0) {
1726                                 break;
1727                         }
1728                 }
1729                 if (idx2 < nlun_new) {
1730                         continue;
1731                 }
1732                 /*
1733                  * An 'old' item not in the 'new' list.
1734                  * Nuke it. Except that if it is lun 0,
1735                  * that would be what the probe state
1736                  * machine is currently working on,
1737                  * so we won't do that.
1738                  */
1739                 CAM_GET_LUN(old, idx1, this_lun);
1740                 if (this_lun == 0) {
1741                         continue;
1742                 }
1743
1744                 /*
1745                  * We also cannot nuke it if it is
1746                  * not in a lun format we understand
1747                  * and replace the LUN with a "simple" LUN
1748                  * if that is all the HBA supports.
1749                  */
1750                 if (!(flags & PROBE_EXTLUN)) {
1751                         if (!CAM_CAN_GET_SIMPLE_LUN(old, idx1))
1752                                 continue;
1753                         CAM_GET_SIMPLE_LUN(old, idx1, this_lun);
1754                 }
1755                 if (!CAM_LUN_ONLY_32BITS(old, idx1))
1756                         continue;
1757
1758                 if (xpt_create_path(&tp, NULL, xpt_path_path_id(path),
1759                     xpt_path_target_id(path), this_lun) == CAM_REQ_CMP) {
1760                         xpt_async(AC_LOST_DEVICE, tp, NULL);
1761                         xpt_free_path(tp);
1762                 }
1763         }
1764         free(old, M_CAMXPT);
1765 }
1766
1767 static void
1768 probecleanup(struct cam_periph *periph)
1769 {
1770         free(periph->softc, M_CAMXPT);
1771 }
1772
1773 static void
1774 scsi_find_quirk(struct cam_ed *device)
1775 {
1776         struct scsi_quirk_entry *quirk;
1777         caddr_t match;
1778
1779         match = cam_quirkmatch((caddr_t)&device->inq_data,
1780                                (caddr_t)scsi_quirk_table,
1781                                sizeof(scsi_quirk_table) /
1782                                sizeof(*scsi_quirk_table),
1783                                sizeof(*scsi_quirk_table), scsi_inquiry_match);
1784
1785         if (match == NULL)
1786                 panic("xpt_find_quirk: device didn't match wildcard entry!!");
1787
1788         quirk = (struct scsi_quirk_entry *)match;
1789         device->quirk = quirk;
1790         device->mintags = quirk->mintags;
1791         device->maxtags = quirk->maxtags;
1792 }
1793
1794 static int
1795 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS)
1796 {
1797         int error, val;
1798
1799         val = cam_srch_hi;
1800         error = sysctl_handle_int(oidp, &val, 0, req);
1801         if (error != 0 || req->newptr == NULL)
1802                 return (error);
1803         if (val == 0 || val == 1) {
1804                 cam_srch_hi = val;
1805                 return (0);
1806         } else {
1807                 return (EINVAL);
1808         }
1809 }
1810
1811 typedef struct {
1812         union   ccb *request_ccb;
1813         struct  ccb_pathinq *cpi;
1814         int     counter;
1815         int     lunindex[0];
1816 } scsi_scan_bus_info;
1817
1818 /*
1819  * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
1820  * As the scan progresses, scsi_scan_bus is used as the
1821  * callback on completion function.
1822  */
1823 static void
1824 scsi_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
1825 {
1826         struct mtx *mtx;
1827
1828         CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
1829                   ("scsi_scan_bus\n"));
1830         switch (request_ccb->ccb_h.func_code) {
1831         case XPT_SCAN_BUS:
1832         case XPT_SCAN_TGT:
1833         {
1834                 scsi_scan_bus_info *scan_info;
1835                 union   ccb *work_ccb, *reset_ccb;
1836                 struct  cam_path *path;
1837                 u_int   i;
1838                 u_int   low_target, max_target;
1839                 u_int   initiator_id;
1840
1841                 /* Find out the characteristics of the bus */
1842                 work_ccb = xpt_alloc_ccb_nowait();
1843                 if (work_ccb == NULL) {
1844                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1845                         xpt_done(request_ccb);
1846                         return;
1847                 }
1848                 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
1849                               request_ccb->ccb_h.pinfo.priority);
1850                 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
1851                 xpt_action(work_ccb);
1852                 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
1853                         request_ccb->ccb_h.status = work_ccb->ccb_h.status;
1854                         xpt_free_ccb(work_ccb);
1855                         xpt_done(request_ccb);
1856                         return;
1857                 }
1858
1859                 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
1860                         /*
1861                          * Can't scan the bus on an adapter that
1862                          * cannot perform the initiator role.
1863                          */
1864                         request_ccb->ccb_h.status = CAM_REQ_CMP;
1865                         xpt_free_ccb(work_ccb);
1866                         xpt_done(request_ccb);
1867                         return;
1868                 }
1869
1870                 /* We may need to reset bus first, if we haven't done it yet. */
1871                 if ((work_ccb->cpi.hba_inquiry &
1872                     (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) &&
1873                     !(work_ccb->cpi.hba_misc & PIM_NOBUSRESET) &&
1874                     !timevalisset(&request_ccb->ccb_h.path->bus->last_reset) &&
1875                     (reset_ccb = xpt_alloc_ccb_nowait()) != NULL) {
1876                         xpt_setup_ccb(&reset_ccb->ccb_h, request_ccb->ccb_h.path,
1877                               CAM_PRIORITY_NONE);
1878                         reset_ccb->ccb_h.func_code = XPT_RESET_BUS;
1879                         xpt_action(reset_ccb);
1880                         if (reset_ccb->ccb_h.status != CAM_REQ_CMP) {
1881                                 request_ccb->ccb_h.status = reset_ccb->ccb_h.status;
1882                                 xpt_free_ccb(reset_ccb);
1883                                 xpt_free_ccb(work_ccb);
1884                                 xpt_done(request_ccb);
1885                                 return;
1886                         }
1887                         xpt_free_ccb(reset_ccb);
1888                 }
1889
1890                 /* Save some state for use while we probe for devices */
1891                 scan_info = (scsi_scan_bus_info *) malloc(sizeof(scsi_scan_bus_info) +
1892                     (work_ccb->cpi.max_target * sizeof (u_int)), M_CAMXPT, M_ZERO|M_NOWAIT);
1893                 if (scan_info == NULL) {
1894                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1895                         xpt_free_ccb(work_ccb);
1896                         xpt_done(request_ccb);
1897                         return;
1898                 }
1899                 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
1900                    ("SCAN start for %p\n", scan_info));
1901                 scan_info->request_ccb = request_ccb;
1902                 scan_info->cpi = &work_ccb->cpi;
1903
1904                 /* Cache on our stack so we can work asynchronously */
1905                 max_target = scan_info->cpi->max_target;
1906                 low_target = 0;
1907                 initiator_id = scan_info->cpi->initiator_id;
1908
1909
1910                 /*
1911                  * We can scan all targets in parallel, or do it sequentially.
1912                  */
1913
1914                 if (request_ccb->ccb_h.func_code == XPT_SCAN_TGT) {
1915                         max_target = low_target = request_ccb->ccb_h.target_id;
1916                         scan_info->counter = 0;
1917                 } else if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
1918                         max_target = 0;
1919                         scan_info->counter = 0;
1920                 } else {
1921                         scan_info->counter = scan_info->cpi->max_target + 1;
1922                         if (scan_info->cpi->initiator_id < scan_info->counter) {
1923                                 scan_info->counter--;
1924                         }
1925                 }
1926                 mtx = xpt_path_mtx(scan_info->request_ccb->ccb_h.path);
1927                 mtx_unlock(mtx);
1928
1929                 for (i = low_target; i <= max_target; i++) {
1930                         cam_status status;
1931                         if (i == initiator_id)
1932                                 continue;
1933
1934                         status = xpt_create_path(&path, NULL,
1935                                                  request_ccb->ccb_h.path_id,
1936                                                  i, 0);
1937                         if (status != CAM_REQ_CMP) {
1938                                 printf("scsi_scan_bus: xpt_create_path failed"
1939                                        " with status %#x, bus scan halted\n",
1940                                        status);
1941                                 free(scan_info, M_CAMXPT);
1942                                 request_ccb->ccb_h.status = status;
1943                                 xpt_free_ccb(work_ccb);
1944                                 xpt_done(request_ccb);
1945                                 break;
1946                         }
1947                         work_ccb = xpt_alloc_ccb_nowait();
1948                         if (work_ccb == NULL) {
1949                                 xpt_free_ccb((union ccb *)scan_info->cpi);
1950                                 free(scan_info, M_CAMXPT);
1951                                 xpt_free_path(path);
1952                                 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1953                                 xpt_done(request_ccb);
1954                                 break;
1955                         }
1956                         xpt_setup_ccb(&work_ccb->ccb_h, path,
1957                                       request_ccb->ccb_h.pinfo.priority);
1958                         work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
1959                         work_ccb->ccb_h.cbfcnp = scsi_scan_bus;
1960                         work_ccb->ccb_h.flags |= CAM_UNLOCKED;
1961                         work_ccb->ccb_h.ppriv_ptr0 = scan_info;
1962                         work_ccb->crcn.flags = request_ccb->crcn.flags;
1963                         xpt_action(work_ccb);
1964                 }
1965
1966                 mtx_lock(mtx);
1967                 break;
1968         }
1969         case XPT_SCAN_LUN:
1970         {
1971                 cam_status status;
1972                 struct cam_path *path, *oldpath;
1973                 scsi_scan_bus_info *scan_info;
1974                 struct cam_et *target;
1975                 struct cam_ed *device, *nextdev;
1976                 int next_target;
1977                 path_id_t path_id;
1978                 target_id_t target_id;
1979                 lun_id_t lun_id;
1980
1981                 oldpath = request_ccb->ccb_h.path;
1982
1983                 status = cam_ccb_status(request_ccb);
1984                 scan_info = (scsi_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
1985                 path_id = request_ccb->ccb_h.path_id;
1986                 target_id = request_ccb->ccb_h.target_id;
1987                 lun_id = request_ccb->ccb_h.target_lun;
1988                 target = request_ccb->ccb_h.path->target;
1989                 next_target = 1;
1990
1991                 mtx = xpt_path_mtx(scan_info->request_ccb->ccb_h.path);
1992                 mtx_lock(mtx);
1993                 mtx_lock(&target->luns_mtx);
1994                 if (target->luns) {
1995                         lun_id_t first;
1996                         u_int nluns = scsi_4btoul(target->luns->length) / 8;
1997
1998                         /*
1999                          * Make sure we skip over lun 0 if it's the first member
2000                          * of the list as we've actually just finished probing
2001                          * it.
2002                          */
2003                         CAM_GET_LUN(target->luns, 0, first);
2004                         if (first == 0 && scan_info->lunindex[target_id] == 0) {
2005                                 scan_info->lunindex[target_id]++;
2006                         }
2007
2008                         /*
2009                          * Skip any LUNs that the HBA can't deal with.
2010                          */
2011                         while (scan_info->lunindex[target_id] < nluns) {
2012                                 if (scan_info->cpi->hba_misc & PIM_EXTLUNS) {
2013                                         CAM_GET_LUN(target->luns,
2014                                             scan_info->lunindex[target_id],
2015                                             lun_id);
2016                                         break;
2017                                 }
2018
2019                                 /* XXX print warning? */
2020                                 if (!CAM_LUN_ONLY_32BITS(target->luns,
2021                                     scan_info->lunindex[target_id]))
2022                                         continue;
2023                                 if (CAM_CAN_GET_SIMPLE_LUN(target->luns,
2024                                     scan_info->lunindex[target_id])) {
2025                                         CAM_GET_SIMPLE_LUN(target->luns,
2026                                             scan_info->lunindex[target_id],
2027                                             lun_id);
2028                                         break;
2029                                 }
2030
2031                                 scan_info->lunindex[target_id]++;
2032                         }
2033
2034                         if (scan_info->lunindex[target_id] < nluns) {
2035                                 mtx_unlock(&target->luns_mtx);
2036                                 next_target = 0;
2037                                 CAM_DEBUG(request_ccb->ccb_h.path,
2038                                     CAM_DEBUG_PROBE,
2039                                    ("next lun to try at index %u is %jx\n",
2040                                    scan_info->lunindex[target_id],
2041                                    (uintmax_t)lun_id));
2042                                 scan_info->lunindex[target_id]++;
2043                         } else {
2044                                 mtx_unlock(&target->luns_mtx);
2045                                 /* We're done with scanning all luns. */
2046                         }
2047                 } else {
2048                         mtx_unlock(&target->luns_mtx);
2049                         device = request_ccb->ccb_h.path->device;
2050                         /* Continue sequential LUN scan if: */
2051                         /*  -- we have more LUNs that need recheck */
2052                         mtx_lock(&target->bus->eb_mtx);
2053                         nextdev = device;
2054                         while ((nextdev = TAILQ_NEXT(nextdev, links)) != NULL)
2055                                 if ((nextdev->flags & CAM_DEV_UNCONFIGURED) == 0)
2056                                         break;
2057                         mtx_unlock(&target->bus->eb_mtx);
2058                         if (nextdev != NULL) {
2059                                 next_target = 0;
2060                         /*  -- stop if CAM_QUIRK_NOLUNS is set. */
2061                         } else if (SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOLUNS) {
2062                                 next_target = 1;
2063                         /*  -- this LUN is connected and its SCSI version
2064                          *     allows more LUNs. */
2065                         } else if ((device->flags & CAM_DEV_UNCONFIGURED) == 0) {
2066                                 if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
2067                                     CAN_SRCH_HI_DENSE(device))
2068                                         next_target = 0;
2069                         /*  -- this LUN is disconnected, its SCSI version
2070                          *     allows more LUNs and we guess they may be. */
2071                         } else if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0) {
2072                                 if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
2073                                     CAN_SRCH_HI_SPARSE(device))
2074                                         next_target = 0;
2075                         }
2076                         if (next_target == 0) {
2077                                 lun_id++;
2078                                 if (lun_id > scan_info->cpi->max_lun)
2079                                         next_target = 1;
2080                         }
2081                 }
2082
2083                 /*
2084                  * Check to see if we scan any further luns.
2085                  */
2086                 if (next_target) {
2087                         int done;
2088
2089                         /*
2090                          * Free the current request path- we're done with it.
2091                          */
2092                         xpt_free_path(oldpath);
2093  hop_again:
2094                         done = 0;
2095                         if (scan_info->request_ccb->ccb_h.func_code == XPT_SCAN_TGT) {
2096                                 done = 1;
2097                         } else if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
2098                                 scan_info->counter++;
2099                                 if (scan_info->counter ==
2100                                     scan_info->cpi->initiator_id) {
2101                                         scan_info->counter++;
2102                                 }
2103                                 if (scan_info->counter >=
2104                                     scan_info->cpi->max_target+1) {
2105                                         done = 1;
2106                                 }
2107                         } else {
2108                                 scan_info->counter--;
2109                                 if (scan_info->counter == 0) {
2110                                         done = 1;
2111                                 }
2112                         }
2113                         if (done) {
2114                                 mtx_unlock(mtx);
2115                                 xpt_free_ccb(request_ccb);
2116                                 xpt_free_ccb((union ccb *)scan_info->cpi);
2117                                 request_ccb = scan_info->request_ccb;
2118                                 CAM_DEBUG(request_ccb->ccb_h.path,
2119                                     CAM_DEBUG_TRACE,
2120                                    ("SCAN done for %p\n", scan_info));
2121                                 free(scan_info, M_CAMXPT);
2122                                 request_ccb->ccb_h.status = CAM_REQ_CMP;
2123                                 xpt_done(request_ccb);
2124                                 break;
2125                         }
2126
2127                         if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) {
2128                                 mtx_unlock(mtx);
2129                                 xpt_free_ccb(request_ccb);
2130                                 break;
2131                         }
2132                         status = xpt_create_path(&path, NULL,
2133                             scan_info->request_ccb->ccb_h.path_id,
2134                             scan_info->counter, 0);
2135                         if (status != CAM_REQ_CMP) {
2136                                 mtx_unlock(mtx);
2137                                 printf("scsi_scan_bus: xpt_create_path failed"
2138                                     " with status %#x, bus scan halted\n",
2139                                     status);
2140                                 xpt_free_ccb(request_ccb);
2141                                 xpt_free_ccb((union ccb *)scan_info->cpi);
2142                                 request_ccb = scan_info->request_ccb;
2143                                 free(scan_info, M_CAMXPT);
2144                                 request_ccb->ccb_h.status = status;
2145                                 xpt_done(request_ccb);
2146                                 break;
2147                         }
2148                         xpt_setup_ccb(&request_ccb->ccb_h, path,
2149                             request_ccb->ccb_h.pinfo.priority);
2150                         request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2151                         request_ccb->ccb_h.cbfcnp = scsi_scan_bus;
2152                         request_ccb->ccb_h.flags |= CAM_UNLOCKED;
2153                         request_ccb->ccb_h.ppriv_ptr0 = scan_info;
2154                         request_ccb->crcn.flags =
2155                             scan_info->request_ccb->crcn.flags;
2156                 } else {
2157                         status = xpt_create_path(&path, NULL,
2158                                                  path_id, target_id, lun_id);
2159                         /*
2160                          * Free the old request path- we're done with it. We
2161                          * do this *after* creating the new path so that
2162                          * we don't remove a target that has our lun list
2163                          * in the case that lun 0 is not present.
2164                          */
2165                         xpt_free_path(oldpath);
2166                         if (status != CAM_REQ_CMP) {
2167                                 printf("scsi_scan_bus: xpt_create_path failed "
2168                                        "with status %#x, halting LUN scan\n",
2169                                        status);
2170                                 goto hop_again;
2171                         }
2172                         xpt_setup_ccb(&request_ccb->ccb_h, path,
2173                                       request_ccb->ccb_h.pinfo.priority);
2174                         request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2175                         request_ccb->ccb_h.cbfcnp = scsi_scan_bus;
2176                         request_ccb->ccb_h.flags |= CAM_UNLOCKED;
2177                         request_ccb->ccb_h.ppriv_ptr0 = scan_info;
2178                         request_ccb->crcn.flags =
2179                                 scan_info->request_ccb->crcn.flags;
2180                 }
2181                 mtx_unlock(mtx);
2182                 xpt_action(request_ccb);
2183                 break;
2184         }
2185         default:
2186                 break;
2187         }
2188 }
2189
2190 static void
2191 scsi_scan_lun(struct cam_periph *periph, struct cam_path *path,
2192              cam_flags flags, union ccb *request_ccb)
2193 {
2194         struct ccb_pathinq cpi;
2195         cam_status status;
2196         struct cam_path *new_path;
2197         struct cam_periph *old_periph;
2198         int lock;
2199
2200         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("scsi_scan_lun\n"));
2201
2202         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2203         cpi.ccb_h.func_code = XPT_PATH_INQ;
2204         xpt_action((union ccb *)&cpi);
2205
2206         if (cpi.ccb_h.status != CAM_REQ_CMP) {
2207                 if (request_ccb != NULL) {
2208                         request_ccb->ccb_h.status = cpi.ccb_h.status;
2209                         xpt_done(request_ccb);
2210                 }
2211                 return;
2212         }
2213
2214         if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
2215                 /*
2216                  * Can't scan the bus on an adapter that
2217                  * cannot perform the initiator role.
2218                  */
2219                 if (request_ccb != NULL) {
2220                         request_ccb->ccb_h.status = CAM_REQ_CMP;
2221                         xpt_done(request_ccb);
2222                 }
2223                 return;
2224         }
2225
2226         if (request_ccb == NULL) {
2227                 request_ccb = xpt_alloc_ccb_nowait();
2228                 if (request_ccb == NULL) {
2229                         xpt_print(path, "scsi_scan_lun: can't allocate CCB, "
2230                             "can't continue\n");
2231                         return;
2232                 }
2233                 status = xpt_create_path(&new_path, NULL,
2234                                           path->bus->path_id,
2235                                           path->target->target_id,
2236                                           path->device->lun_id);
2237                 if (status != CAM_REQ_CMP) {
2238                         xpt_print(path, "scsi_scan_lun: can't create path, "
2239                             "can't continue\n");
2240                         xpt_free_ccb(request_ccb);
2241                         return;
2242                 }
2243                 xpt_setup_ccb(&request_ccb->ccb_h, new_path, CAM_PRIORITY_XPT);
2244                 request_ccb->ccb_h.cbfcnp = xptscandone;
2245                 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2246                 request_ccb->ccb_h.flags |= CAM_UNLOCKED;
2247                 request_ccb->crcn.flags = flags;
2248         }
2249
2250         lock = (xpt_path_owned(path) == 0);
2251         if (lock)
2252                 xpt_path_lock(path);
2253         if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
2254                 if ((old_periph->flags & CAM_PERIPH_INVALID) == 0) {
2255                         probe_softc *softc;
2256
2257                         softc = (probe_softc *)old_periph->softc;
2258                         TAILQ_INSERT_TAIL(&softc->request_ccbs,
2259                             &request_ccb->ccb_h, periph_links.tqe);
2260                 } else {
2261                         request_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
2262                         xpt_done(request_ccb);
2263                 }
2264         } else {
2265                 status = cam_periph_alloc(proberegister, NULL, probecleanup,
2266                                           probestart, "probe",
2267                                           CAM_PERIPH_BIO,
2268                                           request_ccb->ccb_h.path, NULL, 0,
2269                                           request_ccb);
2270
2271                 if (status != CAM_REQ_CMP) {
2272                         xpt_print(path, "scsi_scan_lun: cam_alloc_periph "
2273                             "returned an error, can't continue probe\n");
2274                         request_ccb->ccb_h.status = status;
2275                         xpt_done(request_ccb);
2276                 }
2277         }
2278         if (lock)
2279                 xpt_path_unlock(path);
2280 }
2281
2282 static void
2283 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
2284 {
2285
2286         xpt_free_path(done_ccb->ccb_h.path);
2287         xpt_free_ccb(done_ccb);
2288 }
2289
2290 static struct cam_ed *
2291 scsi_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
2292 {
2293         struct scsi_quirk_entry *quirk;
2294         struct cam_ed *device;
2295
2296         device = xpt_alloc_device(bus, target, lun_id);
2297         if (device == NULL)
2298                 return (NULL);
2299
2300         /*
2301          * Take the default quirk entry until we have inquiry
2302          * data and can determine a better quirk to use.
2303          */
2304         quirk = &scsi_quirk_table[scsi_quirk_table_size - 1];
2305         device->quirk = (void *)quirk;
2306         device->mintags = quirk->mintags;
2307         device->maxtags = quirk->maxtags;
2308         bzero(&device->inq_data, sizeof(device->inq_data));
2309         device->inq_flags = 0;
2310         device->queue_flags = 0;
2311         device->serial_num = NULL;
2312         device->serial_num_len = 0;
2313         device->device_id = NULL;
2314         device->device_id_len = 0;
2315         device->supported_vpds = NULL;
2316         device->supported_vpds_len = 0;
2317         return (device);
2318 }
2319
2320 static void
2321 scsi_devise_transport(struct cam_path *path)
2322 {
2323         struct ccb_pathinq cpi;
2324         struct ccb_trans_settings cts;
2325         struct scsi_inquiry_data *inq_buf;
2326
2327         /* Get transport information from the SIM */
2328         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2329         cpi.ccb_h.func_code = XPT_PATH_INQ;
2330         xpt_action((union ccb *)&cpi);
2331
2332         inq_buf = NULL;
2333         if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
2334                 inq_buf = &path->device->inq_data;
2335         path->device->protocol = PROTO_SCSI;
2336         path->device->protocol_version =
2337             inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
2338         path->device->transport = cpi.transport;
2339         path->device->transport_version = cpi.transport_version;
2340
2341         /*
2342          * Any device not using SPI3 features should
2343          * be considered SPI2 or lower.
2344          */
2345         if (inq_buf != NULL) {
2346                 if (path->device->transport == XPORT_SPI
2347                  && (inq_buf->spi3data & SID_SPI_MASK) == 0
2348                  && path->device->transport_version > 2)
2349                         path->device->transport_version = 2;
2350         } else {
2351                 struct cam_ed* otherdev;
2352
2353                 for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
2354                      otherdev != NULL;
2355                      otherdev = TAILQ_NEXT(otherdev, links)) {
2356                         if (otherdev != path->device)
2357                                 break;
2358                 }
2359
2360                 if (otherdev != NULL) {
2361                         /*
2362                          * Initially assume the same versioning as
2363                          * prior luns for this target.
2364                          */
2365                         path->device->protocol_version =
2366                             otherdev->protocol_version;
2367                         path->device->transport_version =
2368                             otherdev->transport_version;
2369                 } else {
2370                         /* Until we know better, opt for safty */
2371                         path->device->protocol_version = 2;
2372                         if (path->device->transport == XPORT_SPI)
2373                                 path->device->transport_version = 2;
2374                         else
2375                                 path->device->transport_version = 0;
2376                 }
2377         }
2378
2379         /*
2380          * XXX
2381          * For a device compliant with SPC-2 we should be able
2382          * to determine the transport version supported by
2383          * scrutinizing the version descriptors in the
2384          * inquiry buffer.
2385          */
2386
2387         /* Tell the controller what we think */
2388         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
2389         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
2390         cts.type = CTS_TYPE_CURRENT_SETTINGS;
2391         cts.transport = path->device->transport;
2392         cts.transport_version = path->device->transport_version;
2393         cts.protocol = path->device->protocol;
2394         cts.protocol_version = path->device->protocol_version;
2395         cts.proto_specific.valid = 0;
2396         cts.xport_specific.valid = 0;
2397         xpt_action((union ccb *)&cts);
2398 }
2399
2400 static void
2401 scsi_dev_advinfo(union ccb *start_ccb)
2402 {
2403         struct cam_ed *device;
2404         struct ccb_dev_advinfo *cdai;
2405         off_t amt;
2406
2407         start_ccb->ccb_h.status = CAM_REQ_INVALID;
2408         device = start_ccb->ccb_h.path->device;
2409         cdai = &start_ccb->cdai;
2410         switch(cdai->buftype) {
2411         case CDAI_TYPE_SCSI_DEVID:
2412                 if (cdai->flags & CDAI_FLAG_STORE)
2413                         return;
2414                 cdai->provsiz = device->device_id_len;
2415                 if (device->device_id_len == 0)
2416                         break;
2417                 amt = device->device_id_len;
2418                 if (cdai->provsiz > cdai->bufsiz)
2419                         amt = cdai->bufsiz;
2420                 memcpy(cdai->buf, device->device_id, amt);
2421                 break;
2422         case CDAI_TYPE_SERIAL_NUM:
2423                 if (cdai->flags & CDAI_FLAG_STORE)
2424                         return;
2425                 cdai->provsiz = device->serial_num_len;
2426                 if (device->serial_num_len == 0)
2427                         break;
2428                 amt = device->serial_num_len;
2429                 if (cdai->provsiz > cdai->bufsiz)
2430                         amt = cdai->bufsiz;
2431                 memcpy(cdai->buf, device->serial_num, amt);
2432                 break;
2433         case CDAI_TYPE_PHYS_PATH:
2434                 if (cdai->flags & CDAI_FLAG_STORE) {
2435                         if (device->physpath != NULL) {
2436                                 free(device->physpath, M_CAMXPT);
2437                                 device->physpath = NULL;
2438                         }
2439                         device->physpath_len = cdai->bufsiz;
2440                         /* Clear existing buffer if zero length */
2441                         if (cdai->bufsiz == 0)
2442                                 break;
2443                         device->physpath = malloc(cdai->bufsiz, M_CAMXPT, M_NOWAIT);
2444                         if (device->physpath == NULL) {
2445                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
2446                                 return;
2447                         }
2448                         memcpy(device->physpath, cdai->buf, cdai->bufsiz);
2449                 } else {
2450                         cdai->provsiz = device->physpath_len;
2451                         if (device->physpath_len == 0)
2452                                 break;
2453                         amt = device->physpath_len;
2454                         if (cdai->provsiz > cdai->bufsiz)
2455                                 amt = cdai->bufsiz;
2456                         memcpy(cdai->buf, device->physpath, amt);
2457                 }
2458                 break;
2459         case CDAI_TYPE_RCAPLONG:
2460                 if (cdai->flags & CDAI_FLAG_STORE) {
2461                         if (device->rcap_buf != NULL) {
2462                                 free(device->rcap_buf, M_CAMXPT);
2463                                 device->rcap_buf = NULL;
2464                         }
2465
2466                         device->rcap_len = cdai->bufsiz;
2467                         /* Clear existing buffer if zero length */
2468                         if (cdai->bufsiz == 0)
2469                                 break;
2470
2471                         device->rcap_buf = malloc(cdai->bufsiz, M_CAMXPT,
2472                                                   M_NOWAIT);
2473                         if (device->rcap_buf == NULL) {
2474                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
2475                                 return;
2476                         }
2477
2478                         memcpy(device->rcap_buf, cdai->buf, cdai->bufsiz);
2479                 } else {
2480                         cdai->provsiz = device->rcap_len;
2481                         if (device->rcap_len == 0)
2482                                 break;
2483                         amt = device->rcap_len;
2484                         if (cdai->provsiz > cdai->bufsiz)
2485                                 amt = cdai->bufsiz;
2486                         memcpy(cdai->buf, device->rcap_buf, amt);
2487                 }
2488                 break;
2489         default:
2490                 return;
2491         }
2492         start_ccb->ccb_h.status = CAM_REQ_CMP;
2493
2494         if (cdai->flags & CDAI_FLAG_STORE) {
2495                 xpt_async(AC_ADVINFO_CHANGED, start_ccb->ccb_h.path,
2496                           (void *)(uintptr_t)cdai->buftype);
2497         }
2498 }
2499
2500 static void
2501 scsi_action(union ccb *start_ccb)
2502 {
2503
2504         switch (start_ccb->ccb_h.func_code) {
2505         case XPT_SET_TRAN_SETTINGS:
2506         {
2507                 scsi_set_transfer_settings(&start_ccb->cts,
2508                                            start_ccb->ccb_h.path,
2509                                            /*async_update*/FALSE);
2510                 break;
2511         }
2512         case XPT_SCAN_BUS:
2513         case XPT_SCAN_TGT:
2514                 scsi_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
2515                 break;
2516         case XPT_SCAN_LUN:
2517                 scsi_scan_lun(start_ccb->ccb_h.path->periph,
2518                               start_ccb->ccb_h.path, start_ccb->crcn.flags,
2519                               start_ccb);
2520                 break;
2521         case XPT_DEV_ADVINFO:
2522         {
2523                 scsi_dev_advinfo(start_ccb);
2524                 break;
2525         }
2526         default:
2527                 xpt_action_default(start_ccb);
2528                 break;
2529         }
2530 }
2531
2532 static void
2533 scsi_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_path *path,
2534                            int async_update)
2535 {
2536         struct  ccb_pathinq cpi;
2537         struct  ccb_trans_settings cur_cts;
2538         struct  ccb_trans_settings_scsi *scsi;
2539         struct  ccb_trans_settings_scsi *cur_scsi;
2540         struct  scsi_inquiry_data *inq_data;
2541         struct  cam_ed *device;
2542
2543         if (path == NULL || (device = path->device) == NULL) {
2544                 cts->ccb_h.status = CAM_PATH_INVALID;
2545                 xpt_done((union ccb *)cts);
2546                 return;
2547         }
2548
2549         if (cts->protocol == PROTO_UNKNOWN
2550          || cts->protocol == PROTO_UNSPECIFIED) {
2551                 cts->protocol = device->protocol;
2552                 cts->protocol_version = device->protocol_version;
2553         }
2554
2555         if (cts->protocol_version == PROTO_VERSION_UNKNOWN
2556          || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
2557                 cts->protocol_version = device->protocol_version;
2558
2559         if (cts->protocol != device->protocol) {
2560                 xpt_print(path, "Uninitialized Protocol %x:%x?\n",
2561                        cts->protocol, device->protocol);
2562                 cts->protocol = device->protocol;
2563         }
2564
2565         if (cts->protocol_version > device->protocol_version) {
2566                 if (bootverbose) {
2567                         xpt_print(path, "Down reving Protocol "
2568                             "Version from %d to %d?\n", cts->protocol_version,
2569                             device->protocol_version);
2570                 }
2571                 cts->protocol_version = device->protocol_version;
2572         }
2573
2574         if (cts->transport == XPORT_UNKNOWN
2575          || cts->transport == XPORT_UNSPECIFIED) {
2576                 cts->transport = device->transport;
2577                 cts->transport_version = device->transport_version;
2578         }
2579
2580         if (cts->transport_version == XPORT_VERSION_UNKNOWN
2581          || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
2582                 cts->transport_version = device->transport_version;
2583
2584         if (cts->transport != device->transport) {
2585                 xpt_print(path, "Uninitialized Transport %x:%x?\n",
2586                     cts->transport, device->transport);
2587                 cts->transport = device->transport;
2588         }
2589
2590         if (cts->transport_version > device->transport_version) {
2591                 if (bootverbose) {
2592                         xpt_print(path, "Down reving Transport "
2593                             "Version from %d to %d?\n", cts->transport_version,
2594                             device->transport_version);
2595                 }
2596                 cts->transport_version = device->transport_version;
2597         }
2598
2599         /*
2600          * Nothing more of interest to do unless
2601          * this is a device connected via the
2602          * SCSI protocol.
2603          */
2604         if (cts->protocol != PROTO_SCSI) {
2605                 if (async_update == FALSE)
2606                         xpt_action_default((union ccb *)cts);
2607                 return;
2608         }
2609
2610         inq_data = &device->inq_data;
2611         scsi = &cts->proto_specific.scsi;
2612         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2613         cpi.ccb_h.func_code = XPT_PATH_INQ;
2614         xpt_action((union ccb *)&cpi);
2615
2616         /* SCSI specific sanity checking */
2617         if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
2618          || (INQ_DATA_TQ_ENABLED(inq_data)) == 0
2619          || (device->queue_flags & SCP_QUEUE_DQUE) != 0
2620          || (device->mintags == 0)) {
2621                 /*
2622                  * Can't tag on hardware that doesn't support tags,
2623                  * doesn't have it enabled, or has broken tag support.
2624                  */
2625                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2626         }
2627
2628         if (async_update == FALSE) {
2629                 /*
2630                  * Perform sanity checking against what the
2631                  * controller and device can do.
2632                  */
2633                 xpt_setup_ccb(&cur_cts.ccb_h, path, CAM_PRIORITY_NONE);
2634                 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
2635                 cur_cts.type = cts->type;
2636                 xpt_action((union ccb *)&cur_cts);
2637                 if (cam_ccb_status((union ccb *)&cur_cts) != CAM_REQ_CMP) {
2638                         return;
2639                 }
2640                 cur_scsi = &cur_cts.proto_specific.scsi;
2641                 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
2642                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2643                         scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
2644                 }
2645                 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
2646                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2647         }
2648
2649         /* SPI specific sanity checking */
2650         if (cts->transport == XPORT_SPI && async_update == FALSE) {
2651                 u_int spi3caps;
2652                 struct ccb_trans_settings_spi *spi;
2653                 struct ccb_trans_settings_spi *cur_spi;
2654
2655                 spi = &cts->xport_specific.spi;
2656
2657                 cur_spi = &cur_cts.xport_specific.spi;
2658
2659                 /* Fill in any gaps in what the user gave us */
2660                 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
2661                         spi->sync_period = cur_spi->sync_period;
2662                 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
2663                         spi->sync_period = 0;
2664                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
2665                         spi->sync_offset = cur_spi->sync_offset;
2666                 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
2667                         spi->sync_offset = 0;
2668                 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
2669                         spi->ppr_options = cur_spi->ppr_options;
2670                 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
2671                         spi->ppr_options = 0;
2672                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
2673                         spi->bus_width = cur_spi->bus_width;
2674                 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
2675                         spi->bus_width = 0;
2676                 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
2677                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
2678                         spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
2679                 }
2680                 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
2681                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
2682                 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
2683                   && (inq_data->flags & SID_Sync) == 0
2684                   && cts->type == CTS_TYPE_CURRENT_SETTINGS)
2685                  || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)) {
2686                         /* Force async */
2687                         spi->sync_period = 0;
2688                         spi->sync_offset = 0;
2689                 }
2690
2691                 switch (spi->bus_width) {
2692                 case MSG_EXT_WDTR_BUS_32_BIT:
2693                         if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
2694                           || (inq_data->flags & SID_WBus32) != 0
2695                           || cts->type == CTS_TYPE_USER_SETTINGS)
2696                          && (cpi.hba_inquiry & PI_WIDE_32) != 0)
2697                                 break;
2698                         /* Fall Through to 16-bit */
2699                 case MSG_EXT_WDTR_BUS_16_BIT:
2700                         if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
2701                           || (inq_data->flags & SID_WBus16) != 0
2702                           || cts->type == CTS_TYPE_USER_SETTINGS)
2703                          && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
2704                                 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2705                                 break;
2706                         }
2707                         /* Fall Through to 8-bit */
2708                 default: /* New bus width?? */
2709                 case MSG_EXT_WDTR_BUS_8_BIT:
2710                         /* All targets can do this */
2711                         spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2712                         break;
2713                 }
2714
2715                 spi3caps = cpi.xport_specific.spi.ppr_options;
2716                 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
2717                  && cts->type == CTS_TYPE_CURRENT_SETTINGS)
2718                         spi3caps &= inq_data->spi3data;
2719
2720                 if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
2721                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
2722
2723                 if ((spi3caps & SID_SPI_IUS) == 0)
2724                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2725
2726                 if ((spi3caps & SID_SPI_QAS) == 0)
2727                         spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
2728
2729                 /* No SPI Transfer settings are allowed unless we are wide */
2730                 if (spi->bus_width == 0)
2731                         spi->ppr_options = 0;
2732
2733                 if ((spi->valid & CTS_SPI_VALID_DISC)
2734                  && ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0)) {
2735                         /*
2736                          * Can't tag queue without disconnection.
2737                          */
2738                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2739                         scsi->valid |= CTS_SCSI_VALID_TQ;
2740                 }
2741
2742                 /*
2743                  * If we are currently performing tagged transactions to
2744                  * this device and want to change its negotiation parameters,
2745                  * go non-tagged for a bit to give the controller a chance to
2746                  * negotiate unhampered by tag messages.
2747                  */
2748                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
2749                  && (device->inq_flags & SID_CmdQue) != 0
2750                  && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
2751                  && (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
2752                                    CTS_SPI_VALID_SYNC_OFFSET|
2753                                    CTS_SPI_VALID_BUS_WIDTH)) != 0)
2754                         scsi_toggle_tags(path);
2755         }
2756
2757         if (cts->type == CTS_TYPE_CURRENT_SETTINGS
2758          && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
2759                 int device_tagenb;
2760
2761                 /*
2762                  * If we are transitioning from tags to no-tags or
2763                  * vice-versa, we need to carefully freeze and restart
2764                  * the queue so that we don't overlap tagged and non-tagged
2765                  * commands.  We also temporarily stop tags if there is
2766                  * a change in transfer negotiation settings to allow
2767                  * "tag-less" negotiation.
2768                  */
2769                 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
2770                  || (device->inq_flags & SID_CmdQue) != 0)
2771                         device_tagenb = TRUE;
2772                 else
2773                         device_tagenb = FALSE;
2774
2775                 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
2776                   && device_tagenb == FALSE)
2777                  || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
2778                   && device_tagenb == TRUE)) {
2779
2780                         if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
2781                                 /*
2782                                  * Delay change to use tags until after a
2783                                  * few commands have gone to this device so
2784                                  * the controller has time to perform transfer
2785                                  * negotiations without tagged messages getting
2786                                  * in the way.
2787                                  */
2788                                 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
2789                                 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
2790                         } else {
2791                                 xpt_stop_tags(path);
2792                         }
2793                 }
2794         }
2795         if (async_update == FALSE)
2796                 xpt_action_default((union ccb *)cts);
2797 }
2798
2799 static void
2800 scsi_toggle_tags(struct cam_path *path)
2801 {
2802         struct cam_ed *dev;
2803
2804         /*
2805          * Give controllers a chance to renegotiate
2806          * before starting tag operations.  We
2807          * "toggle" tagged queuing off then on
2808          * which causes the tag enable command delay
2809          * counter to come into effect.
2810          */
2811         dev = path->device;
2812         if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
2813          || ((dev->inq_flags & SID_CmdQue) != 0
2814           && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
2815                 struct ccb_trans_settings cts;
2816
2817                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
2818                 cts.protocol = PROTO_SCSI;
2819                 cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
2820                 cts.transport = XPORT_UNSPECIFIED;
2821                 cts.transport_version = XPORT_VERSION_UNSPECIFIED;
2822                 cts.proto_specific.scsi.flags = 0;
2823                 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
2824                 scsi_set_transfer_settings(&cts, path,
2825                                           /*async_update*/TRUE);
2826                 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
2827                 scsi_set_transfer_settings(&cts, path,
2828                                           /*async_update*/TRUE);
2829         }
2830 }
2831
2832 /*
2833  * Handle any per-device event notifications that require action by the XPT.
2834  */
2835 static void
2836 scsi_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
2837               struct cam_ed *device, void *async_arg)
2838 {
2839         cam_status status;
2840         struct cam_path newpath;
2841
2842         /*
2843          * We only need to handle events for real devices.
2844          */
2845         if (target->target_id == CAM_TARGET_WILDCARD
2846          || device->lun_id == CAM_LUN_WILDCARD)
2847                 return;
2848
2849         /*
2850          * We need our own path with wildcards expanded to
2851          * handle certain types of events.
2852          */
2853         if ((async_code == AC_SENT_BDR)
2854          || (async_code == AC_BUS_RESET)
2855          || (async_code == AC_INQ_CHANGED))
2856                 status = xpt_compile_path(&newpath, NULL,
2857                                           bus->path_id,
2858                                           target->target_id,
2859                                           device->lun_id);
2860         else
2861                 status = CAM_REQ_CMP_ERR;
2862
2863         if (status == CAM_REQ_CMP) {
2864
2865                 /*
2866                  * Allow transfer negotiation to occur in a
2867                  * tag free environment and after settle delay.
2868                  */
2869                 if (async_code == AC_SENT_BDR
2870                  || async_code == AC_BUS_RESET) {
2871                         cam_freeze_devq(&newpath);
2872                         cam_release_devq(&newpath,
2873                                 RELSIM_RELEASE_AFTER_TIMEOUT,
2874                                 /*reduction*/0,
2875                                 /*timeout*/scsi_delay,
2876                                 /*getcount_only*/0);
2877                         scsi_toggle_tags(&newpath);
2878                 }
2879
2880                 if (async_code == AC_INQ_CHANGED) {
2881                         /*
2882                          * We've sent a start unit command, or
2883                          * something similar to a device that
2884                          * may have caused its inquiry data to
2885                          * change. So we re-scan the device to
2886                          * refresh the inquiry data for it.
2887                          */
2888                         scsi_scan_lun(newpath.periph, &newpath,
2889                                      CAM_EXPECT_INQ_CHANGE, NULL);
2890                 }
2891                 xpt_release_path(&newpath);
2892         } else if (async_code == AC_LOST_DEVICE &&
2893             (device->flags & CAM_DEV_UNCONFIGURED) == 0) {
2894                 device->flags |= CAM_DEV_UNCONFIGURED;
2895                 xpt_release_device(device);
2896         } else if (async_code == AC_TRANSFER_NEG) {
2897                 struct ccb_trans_settings *settings;
2898                 struct cam_path path;
2899
2900                 settings = (struct ccb_trans_settings *)async_arg;
2901                 xpt_compile_path(&path, NULL, bus->path_id, target->target_id,
2902                                  device->lun_id);
2903                 scsi_set_transfer_settings(settings, &path,
2904                                           /*async_update*/TRUE);
2905                 xpt_release_path(&path);
2906         }
2907 }
2908
2909 static void
2910 scsi_announce_periph(struct cam_periph *periph)
2911 {
2912         struct  ccb_pathinq cpi;
2913         struct  ccb_trans_settings cts;
2914         struct  cam_path *path = periph->path;
2915         u_int   speed;
2916         u_int   freq;
2917         u_int   mb;
2918
2919         cam_periph_assert(periph, MA_OWNED);
2920
2921         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NORMAL);
2922         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
2923         cts.type = CTS_TYPE_CURRENT_SETTINGS;
2924         xpt_action((union ccb*)&cts);
2925         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP)
2926                 return;
2927         /* Ask the SIM for its base transfer speed */
2928         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL);
2929         cpi.ccb_h.func_code = XPT_PATH_INQ;
2930         xpt_action((union ccb *)&cpi);
2931         /* Report connection speed */
2932         speed = cpi.base_transfer_speed;
2933         freq = 0;
2934         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
2935                 struct  ccb_trans_settings_spi *spi =
2936                     &cts.xport_specific.spi;
2937
2938                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
2939                   && spi->sync_offset != 0) {
2940                         freq = scsi_calc_syncsrate(spi->sync_period);
2941                         speed = freq;
2942                 }
2943                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
2944                         speed *= (0x01 << spi->bus_width);
2945         }
2946         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
2947                 struct  ccb_trans_settings_fc *fc =
2948                     &cts.xport_specific.fc;
2949
2950                 if (fc->valid & CTS_FC_VALID_SPEED)
2951                         speed = fc->bitrate;
2952         }
2953         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SAS) {
2954                 struct  ccb_trans_settings_sas *sas =
2955                     &cts.xport_specific.sas;
2956
2957                 if (sas->valid & CTS_SAS_VALID_SPEED)
2958                         speed = sas->bitrate;
2959         }
2960         mb = speed / 1000;
2961         if (mb > 0)
2962                 printf("%s%d: %d.%03dMB/s transfers",
2963                        periph->periph_name, periph->unit_number,
2964                        mb, speed % 1000);
2965         else
2966                 printf("%s%d: %dKB/s transfers", periph->periph_name,
2967                        periph->unit_number, speed);
2968         /* Report additional information about SPI connections */
2969         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
2970                 struct  ccb_trans_settings_spi *spi;
2971
2972                 spi = &cts.xport_specific.spi;
2973                 if (freq != 0) {
2974                         printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
2975                                freq % 1000,
2976                                (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
2977                              ? " DT" : "",
2978                                spi->sync_offset);
2979                 }
2980                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
2981                  && spi->bus_width > 0) {
2982                         if (freq != 0) {
2983                                 printf(", ");
2984                         } else {
2985                                 printf(" (");
2986                         }
2987                         printf("%dbit)", 8 * (0x01 << spi->bus_width));
2988                 } else if (freq != 0) {
2989                         printf(")");
2990                 }
2991         }
2992         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
2993                 struct  ccb_trans_settings_fc *fc;
2994
2995                 fc = &cts.xport_specific.fc;
2996                 if (fc->valid & CTS_FC_VALID_WWNN)
2997                         printf(" WWNN 0x%llx", (long long) fc->wwnn);
2998                 if (fc->valid & CTS_FC_VALID_WWPN)
2999                         printf(" WWPN 0x%llx", (long long) fc->wwpn);
3000                 if (fc->valid & CTS_FC_VALID_PORT)
3001                         printf(" PortID 0x%x", fc->port);
3002         }
3003         printf("\n");
3004 }
3005