sys/cam/scsi/scsi_xpt.c

   1 /*-
   2  * Implementation of the SCSI Transport
   3  *
   4  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   5  *
   6  * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
   7  * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions, and the following disclaimer,
  15  *    without modification, immediately at the beginning of the file.
  16  * 2. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 #include <sys/param.h>
  36 #include <sys/bus.h>
  37 #include <sys/systm.h>
  38 #include <sys/types.h>
  39 #include <sys/malloc.h>
  40 #include <sys/kernel.h>
  41 #include <sys/time.h>
  42 #include <sys/conf.h>
  43 #include <sys/fcntl.h>
  44 #include <sys/md5.h>
  45 #include <sys/sbuf.h>
  46
  47 #include <sys/lock.h>
  48 #include <sys/mutex.h>
  49 #include <sys/sysctl.h>
  50
  51 #include <cam/cam.h>
  52 #include <cam/cam_ccb.h>
  53 #include <cam/cam_queue.h>
  54 #include <cam/cam_periph.h>
  55 #include <cam/cam_sim.h>
  56 #include <cam/cam_xpt.h>
  57 #include <cam/cam_xpt_sim.h>
  58 #include <cam/cam_xpt_periph.h>
  59 #include <cam/cam_xpt_internal.h>
  60 #include <cam/cam_debug.h>
  61
  62 #include <cam/scsi/scsi_all.h>
  63 #include <cam/scsi/scsi_message.h>
  64 #include <cam/scsi/scsi_pass.h>
  65 #include <machine/stdarg.h>     /* for xpt_print below */
  66 #include "opt_cam.h"
  67
  68 struct scsi_quirk_entry {
  69         struct scsi_inquiry_pattern inq_pat;
  70         u_int8_t quirks;
  71 #define CAM_QUIRK_NOLUNS        0x01
  72 #define CAM_QUIRK_NOVPDS        0x02
  73 #define CAM_QUIRK_HILUNS        0x04
  74 #define CAM_QUIRK_NOHILUNS      0x08
  75 #define CAM_QUIRK_NORPTLUNS     0x10
  76         u_int mintags;
  77         u_int maxtags;
  78 };
  79 #define SCSI_QUIRK(dev) ((struct scsi_quirk_entry *)((dev)->quirk))
  80
  81 static int cam_srch_hi = 0;
  82 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS);
  83 SYSCTL_PROC(_kern_cam, OID_AUTO, cam_srch_hi, CTLTYPE_INT | CTLFLAG_RWTUN, 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_8btou64((lp)->luns[(i)].lundata);                 \
 105         (lval) = CAM_EXTLUN_BYTE_SWIZZLE(lval);
 106
 107 /*
 108  * If we're not quirked to search <= the first 8 luns
 109  * and we are either quirked to search above lun 8,
 110  * or we're > SCSI-2 and we've enabled hilun searching,
 111  * or we're > SCSI-2 and the last lun was a success,
 112  * we can look for luns above lun 8.
 113  */
 114 #define CAN_SRCH_HI_SPARSE(dv)                                  \
 115   (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0)         \
 116   && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS)               \
 117   || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
 118
 119 #define CAN_SRCH_HI_DENSE(dv)                                   \
 120   (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0)         \
 121   && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS)               \
 122   || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
 123
 124 static periph_init_t probe_periph_init;
 125
 126 static struct periph_driver probe_driver =
 127 {
 128         probe_periph_init, "probe",
 129         TAILQ_HEAD_INITIALIZER(probe_driver.units), /* generation */ 0,
 130         CAM_PERIPH_DRV_EARLY
 131 };
 132
 133 PERIPHDRIVER_DECLARE(probe, probe_driver);
 134
 135 typedef enum {
 136         PROBE_TUR,
 137         PROBE_INQUIRY,  /* this counts as DV0 for Basic Domain Validation */
 138         PROBE_FULL_INQUIRY,
 139         PROBE_REPORT_LUNS,
 140         PROBE_MODE_SENSE,
 141         PROBE_SUPPORTED_VPD_LIST,
 142         PROBE_DEVICE_ID,
 143         PROBE_EXTENDED_INQUIRY,
 144         PROBE_SERIAL_NUM,
 145         PROBE_TUR_FOR_NEGOTIATION,
 146         PROBE_INQUIRY_BASIC_DV1,
 147         PROBE_INQUIRY_BASIC_DV2,
 148         PROBE_DV_EXIT,
 149         PROBE_DONE,
 150         PROBE_INVALID
 151 } probe_action;
 152
 153 static char *probe_action_text[] = {
 154         "PROBE_TUR",
 155         "PROBE_INQUIRY",
 156         "PROBE_FULL_INQUIRY",
 157         "PROBE_REPORT_LUNS",
 158         "PROBE_MODE_SENSE",
 159         "PROBE_SUPPORTED_VPD_LIST",
 160         "PROBE_DEVICE_ID",
 161         "PROBE_EXTENDED_INQUIRY",
 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 apparently 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                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic", "STORAGE DEVICE*", "120?" },
 552                 CAM_QUIRK_NORPTLUNS, /*mintags*/2, /*maxtags*/255
 553         },
 554         {
 555                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic", "MassStorageClass", "1533" },
 556                 CAM_QUIRK_NORPTLUNS, /*mintags*/2, /*maxtags*/255
 557         },
 558         {
 559                 /* Default tagged queuing parameters for all devices */
 560                 {
 561                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 562                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 563                 },
 564                 /*quirks*/0, /*mintags*/2, /*maxtags*/255
 565         },
 566 };
 567
 568 static cam_status       proberegister(struct cam_periph *periph,
 569                                       void *arg);
 570 static void      probeschedule(struct cam_periph *probe_periph);
 571 static void      probestart(struct cam_periph *periph, union ccb *start_ccb);
 572 static void      proberequestdefaultnegotiation(struct cam_periph *periph);
 573 static int       proberequestbackoff(struct cam_periph *periph,
 574                                      struct cam_ed *device);
 575 static void      probedone(struct cam_periph *periph, union ccb *done_ccb);
 576 static void      probe_purge_old(struct cam_path *path,
 577                                  struct scsi_report_luns_data *new,
 578                                  probe_flags flags);
 579 static void      probecleanup(struct cam_periph *periph);
 580 static void      scsi_find_quirk(struct cam_ed *device);
 581 static void      scsi_scan_bus(struct cam_periph *periph, union ccb *ccb);
 582 static void      scsi_scan_lun(struct cam_periph *periph,
 583                                struct cam_path *path, cam_flags flags,
 584                                union ccb *ccb);
 585 static void      xptscandone(struct cam_periph *periph, union ccb *done_ccb);
 586 static struct cam_ed *
 587                  scsi_alloc_device(struct cam_eb *bus, struct cam_et *target,
 588                                    lun_id_t lun_id);
 589 static void      scsi_devise_transport(struct cam_path *path);
 590 static void      scsi_set_transfer_settings(struct ccb_trans_settings *cts,
 591                                             struct cam_path *path,
 592                                             int async_update);
 593 static void      scsi_toggle_tags(struct cam_path *path);
 594 static void      scsi_dev_async(u_int32_t async_code,
 595                                 struct cam_eb *bus,
 596                                 struct cam_et *target,
 597                                 struct cam_ed *device,
 598                                 void *async_arg);
 599 static void      scsi_action(union ccb *start_ccb);
 600 static void      scsi_announce_periph(struct cam_periph *periph);
 601 static void      scsi_announce_periph_sbuf(struct cam_periph *periph, struct sbuf *sb);
 602 static void      scsi_proto_announce(struct cam_ed *device);
 603 static void      scsi_proto_announce_sbuf(struct cam_ed *device,
 604                                           struct sbuf *sb);
 605 static void      scsi_proto_denounce(struct cam_ed *device);
 606 static void      scsi_proto_denounce_sbuf(struct cam_ed *device,
 607                                           struct sbuf *sb);
 608 static void      scsi_proto_debug_out(union ccb *ccb);
 609 static void      _scsi_announce_periph(struct cam_periph *, u_int *, u_int *, struct ccb_trans_settings *);
 610
 611 static struct xpt_xport_ops scsi_xport_ops = {
 612         .alloc_device = scsi_alloc_device,
 613         .action = scsi_action,
 614         .async = scsi_dev_async,
 615         .announce = scsi_announce_periph,
 616         .announce_sbuf = scsi_announce_periph_sbuf,
 617 };
 618 #define SCSI_XPT_XPORT(x, X)                    \
 619 static struct xpt_xport scsi_xport_ ## x = {    \
 620         .xport = XPORT_ ## X,                   \
 621         .name = #x,                             \
 622         .ops = &scsi_xport_ops,                 \
 623 };                                              \
 624 CAM_XPT_XPORT(scsi_xport_ ## x);
 625
 626 SCSI_XPT_XPORT(spi, SPI);
 627 SCSI_XPT_XPORT(sas, SAS);
 628 SCSI_XPT_XPORT(fc, FC);
 629 SCSI_XPT_XPORT(usb, USB);
 630 SCSI_XPT_XPORT(iscsi, ISCSI);
 631 SCSI_XPT_XPORT(srp, SRP);
 632 SCSI_XPT_XPORT(ppb, PPB);
 633
 634 #undef SCSI_XPORT_XPORT
 635
 636 static struct xpt_proto_ops scsi_proto_ops = {
 637         .announce = scsi_proto_announce,
 638         .announce_sbuf = scsi_proto_announce_sbuf,
 639         .denounce = scsi_proto_denounce,
 640         .denounce_sbuf = scsi_proto_denounce_sbuf,
 641         .debug_out = scsi_proto_debug_out,
 642 };
 643 static struct xpt_proto scsi_proto = {
 644         .proto = PROTO_SCSI,
 645         .name = "scsi",
 646         .ops = &scsi_proto_ops,
 647 };
 648 CAM_XPT_PROTO(scsi_proto);
 649
 650 static void
 651 probe_periph_init()
 652 {
 653 }
 654
 655 static cam_status
 656 proberegister(struct cam_periph *periph, void *arg)
 657 {
 658         union ccb *request_ccb; /* CCB representing the probe request */
 659         probe_softc *softc;
 660
 661         request_ccb = (union ccb *)arg;
 662         if (request_ccb == NULL) {
 663                 printf("proberegister: no probe CCB, "
 664                        "can't register device\n");
 665                 return(CAM_REQ_CMP_ERR);
 666         }
 667
 668         softc = (probe_softc *)malloc(sizeof(*softc), M_CAMXPT, M_NOWAIT);
 669
 670         if (softc == NULL) {
 671                 printf("proberegister: Unable to probe new device. "
 672                        "Unable to allocate softc\n");
 673                 return(CAM_REQ_CMP_ERR);
 674         }
 675         TAILQ_INIT(&softc->request_ccbs);
 676         TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
 677                           periph_links.tqe);
 678         softc->flags = 0;
 679         periph->softc = softc;
 680         softc->periph = periph;
 681         softc->action = PROBE_INVALID;
 682         if (cam_periph_acquire(periph) != 0)
 683                 return (CAM_REQ_CMP_ERR);
 684
 685         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe started\n"));
 686         scsi_devise_transport(periph->path);
 687
 688         /*
 689          * Ensure we've waited at least a bus settle
 690          * delay before attempting to probe the device.
 691          * For HBAs that don't do bus resets, this won't make a difference.
 692          */
 693         cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
 694                                       scsi_delay);
 695         probeschedule(periph);
 696         return(CAM_REQ_CMP);
 697 }
 698
 699 static void
 700 probeschedule(struct cam_periph *periph)
 701 {
 702         struct ccb_pathinq cpi;
 703         union ccb *ccb;
 704         probe_softc *softc;
 705
 706         softc = (probe_softc *)periph->softc;
 707         ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
 708
 709         xpt_path_inq(&cpi, periph->path);
 710
 711         /*
 712          * If a device has gone away and another device, or the same one,
 713          * is back in the same place, it should have a unit attention
 714          * condition pending.  It will not report the unit attention in
 715          * response to an inquiry, which may leave invalid transfer
 716          * negotiations in effect.  The TUR will reveal the unit attention
 717          * condition.  Only send the TUR for lun 0, since some devices
 718          * will get confused by commands other than inquiry to non-existent
 719          * luns.  If you think a device has gone away start your scan from
 720          * lun 0.  This will insure that any bogus transfer settings are
 721          * invalidated.
 722          *
 723          * If we haven't seen the device before and the controller supports
 724          * some kind of transfer negotiation, negotiate with the first
 725          * sent command if no bus reset was performed at startup.  This
 726          * ensures that the device is not confused by transfer negotiation
 727          * settings left over by loader or BIOS action.
 728          */
 729         if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 730          && (ccb->ccb_h.target_lun == 0)) {
 731                 PROBE_SET_ACTION(softc, PROBE_TUR);
 732         } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
 733               && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
 734                 proberequestdefaultnegotiation(periph);
 735                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
 736         } else {
 737                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
 738         }
 739
 740         if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
 741                 softc->flags |= PROBE_NO_ANNOUNCE;
 742         else
 743                 softc->flags &= ~PROBE_NO_ANNOUNCE;
 744
 745         if (cpi.hba_misc & PIM_EXTLUNS)
 746                 softc->flags |= PROBE_EXTLUN;
 747         else
 748                 softc->flags &= ~PROBE_EXTLUN;
 749
 750         xpt_schedule(periph, CAM_PRIORITY_XPT);
 751 }
 752
 753 static void
 754 probestart(struct cam_periph *periph, union ccb *start_ccb)
 755 {
 756         /* Probe the device that our peripheral driver points to */
 757         struct ccb_scsiio *csio;
 758         probe_softc *softc;
 759
 760         CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
 761
 762         softc = (probe_softc *)periph->softc;
 763         csio = &start_ccb->csio;
 764 again:
 765
 766         switch (softc->action) {
 767         case PROBE_TUR:
 768         case PROBE_TUR_FOR_NEGOTIATION:
 769         case PROBE_DV_EXIT:
 770         {
 771                 scsi_test_unit_ready(csio,
 772                                      /*retries*/4,
 773                                      probedone,
 774                                      MSG_SIMPLE_Q_TAG,
 775                                      SSD_FULL_SIZE,
 776                                      /*timeout*/60000);
 777                 break;
 778         }
 779         case PROBE_INQUIRY:
 780         case PROBE_FULL_INQUIRY:
 781         case PROBE_INQUIRY_BASIC_DV1:
 782         case PROBE_INQUIRY_BASIC_DV2:
 783         {
 784                 u_int inquiry_len;
 785                 struct scsi_inquiry_data *inq_buf;
 786
 787                 inq_buf = &periph->path->device->inq_data;
 788
 789                 /*
 790                  * If the device is currently configured, we calculate an
 791                  * MD5 checksum of the inquiry data, and if the serial number
 792                  * length is greater than 0, add the serial number data
 793                  * into the checksum as well.  Once the inquiry and the
 794                  * serial number check finish, we attempt to figure out
 795                  * whether we still have the same device.
 796                  */
 797                 if (((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 798                  && ((softc->flags & PROBE_INQUIRY_CKSUM) == 0)) {
 799
 800                         MD5Init(&softc->context);
 801                         MD5Update(&softc->context, (unsigned char *)inq_buf,
 802                                   sizeof(struct scsi_inquiry_data));
 803                         softc->flags |= PROBE_INQUIRY_CKSUM;
 804                         if (periph->path->device->serial_num_len > 0) {
 805                                 MD5Update(&softc->context,
 806                                           periph->path->device->serial_num,
 807                                           periph->path->device->serial_num_len);
 808                                 softc->flags |= PROBE_SERIAL_CKSUM;
 809                         }
 810                         MD5Final(softc->digest, &softc->context);
 811                 }
 812
 813                 if (softc->action == PROBE_INQUIRY)
 814                         inquiry_len = SHORT_INQUIRY_LENGTH;
 815                 else
 816                         inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf);
 817
 818                 /*
 819                  * Some parallel SCSI devices fail to send an
 820                  * ignore wide residue message when dealing with
 821                  * odd length inquiry requests.  Round up to be
 822                  * safe.
 823                  */
 824                 inquiry_len = roundup2(inquiry_len, 2);
 825
 826                 if (softc->action == PROBE_INQUIRY_BASIC_DV1
 827                  || softc->action == PROBE_INQUIRY_BASIC_DV2) {
 828                         inq_buf = malloc(inquiry_len, M_CAMXPT, M_NOWAIT);
 829                 }
 830                 if (inq_buf == NULL) {
 831                         xpt_print(periph->path, "malloc failure- skipping Basic"
 832                             "Domain Validation\n");
 833                         PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
 834                         scsi_test_unit_ready(csio,
 835                                              /*retries*/4,
 836                                              probedone,
 837                                              MSG_SIMPLE_Q_TAG,
 838                                              SSD_FULL_SIZE,
 839                                              /*timeout*/60000);
 840                         break;
 841                 }
 842                 scsi_inquiry(csio,
 843                              /*retries*/4,
 844                              probedone,
 845                              MSG_SIMPLE_Q_TAG,
 846                              (u_int8_t *)inq_buf,
 847                              inquiry_len,
 848                              /*evpd*/FALSE,
 849                              /*page_code*/0,
 850                              SSD_MIN_SIZE,
 851                              /*timeout*/60 * 1000);
 852                 break;
 853         }
 854         case PROBE_REPORT_LUNS:
 855         {
 856                 void *rp;
 857
 858                 rp = malloc(periph->path->target->rpl_size,
 859                     M_CAMXPT, M_NOWAIT | M_ZERO);
 860                 if (rp == NULL) {
 861                         struct scsi_inquiry_data *inq_buf;
 862                         inq_buf = &periph->path->device->inq_data;
 863                         xpt_print(periph->path,
 864                             "Unable to alloc report luns storage\n");
 865                         if (INQ_DATA_TQ_ENABLED(inq_buf))
 866                                 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
 867                         else
 868                                 PROBE_SET_ACTION(softc,
 869                                     PROBE_SUPPORTED_VPD_LIST);
 870                         goto again;
 871                 }
 872                 scsi_report_luns(csio, 5, probedone, MSG_SIMPLE_Q_TAG,
 873                     RPL_REPORT_DEFAULT, rp, periph->path->target->rpl_size,
 874                     SSD_FULL_SIZE, 60000); break;
 875                 break;
 876         }
 877         case PROBE_MODE_SENSE:
 878         {
 879                 void  *mode_buf;
 880                 int    mode_buf_len;
 881
 882                 mode_buf_len = sizeof(struct scsi_mode_header_6)
 883                              + sizeof(struct scsi_mode_blk_desc)
 884                              + sizeof(struct scsi_control_page);
 885                 mode_buf = malloc(mode_buf_len, M_CAMXPT, M_NOWAIT);
 886                 if (mode_buf != NULL) {
 887                         scsi_mode_sense(csio,
 888                                         /*retries*/4,
 889                                         probedone,
 890                                         MSG_SIMPLE_Q_TAG,
 891                                         /*dbd*/FALSE,
 892                                         SMS_PAGE_CTRL_CURRENT,
 893                                         SMS_CONTROL_MODE_PAGE,
 894                                         mode_buf,
 895                                         mode_buf_len,
 896                                         SSD_FULL_SIZE,
 897                                         /*timeout*/60000);
 898                         break;
 899                 }
 900                 xpt_print(periph->path, "Unable to mode sense control page - "
 901                     "malloc failure\n");
 902                 PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
 903         }
 904         /* FALLTHROUGH */
 905         case PROBE_SUPPORTED_VPD_LIST:
 906         {
 907                 struct scsi_vpd_supported_page_list *vpd_list;
 908                 struct cam_ed *device;
 909
 910                 vpd_list = NULL;
 911                 device = periph->path->device;
 912
 913                 if ((SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOVPDS) == 0)
 914                         vpd_list = malloc(sizeof(*vpd_list), M_CAMXPT,
 915                             M_NOWAIT | M_ZERO);
 916
 917                 if (vpd_list != NULL) {
 918                         scsi_inquiry(csio,
 919                                      /*retries*/4,
 920                                      probedone,
 921                                      MSG_SIMPLE_Q_TAG,
 922                                      (u_int8_t *)vpd_list,
 923                                      sizeof(*vpd_list),
 924                                      /*evpd*/TRUE,
 925                                      SVPD_SUPPORTED_PAGE_LIST,
 926                                      SSD_MIN_SIZE,
 927                                      /*timeout*/60 * 1000);
 928                         break;
 929                 }
 930 done:
 931                 /*
 932                  * We'll have to do without, let our probedone
 933                  * routine finish up for us.
 934                  */
 935                 start_ccb->csio.data_ptr = NULL;
 936                 cam_freeze_devq(periph->path);
 937                 cam_periph_doacquire(periph);
 938                 probedone(periph, start_ccb);
 939                 return;
 940         }
 941         case PROBE_DEVICE_ID:
 942         {
 943                 struct scsi_vpd_device_id *devid;
 944
 945                 devid = NULL;
 946                 if (scsi_vpd_supported_page(periph, SVPD_DEVICE_ID))
 947                         devid = malloc(SVPD_DEVICE_ID_MAX_SIZE, M_CAMXPT,
 948                             M_NOWAIT | M_ZERO);
 949
 950                 if (devid != NULL) {
 951                         scsi_inquiry(csio,
 952                                      /*retries*/4,
 953                                      probedone,
 954                                      MSG_SIMPLE_Q_TAG,
 955                                      (uint8_t *)devid,
 956                                      SVPD_DEVICE_ID_MAX_SIZE,
 957                                      /*evpd*/TRUE,
 958                                      SVPD_DEVICE_ID,
 959                                      SSD_MIN_SIZE,
 960                                      /*timeout*/60 * 1000);
 961                         break;
 962                 }
 963                 goto done;
 964         }
 965         case PROBE_EXTENDED_INQUIRY:
 966         {
 967                 struct scsi_vpd_extended_inquiry_data *ext_inq;
 968
 969                 ext_inq = NULL;
 970                 if (scsi_vpd_supported_page(periph, SVPD_EXTENDED_INQUIRY_DATA))
 971                         ext_inq = malloc(sizeof(*ext_inq), M_CAMXPT,
 972                             M_NOWAIT | M_ZERO);
 973
 974                 if (ext_inq != NULL) {
 975                         scsi_inquiry(csio,
 976                                      /*retries*/4,
 977                                      probedone,
 978                                      MSG_SIMPLE_Q_TAG,
 979                                      (uint8_t *)ext_inq,
 980                                      sizeof(*ext_inq),
 981                                      /*evpd*/TRUE,
 982                                      SVPD_EXTENDED_INQUIRY_DATA,
 983                                      SSD_MIN_SIZE,
 984                                      /*timeout*/60 * 1000);
 985                         break;
 986                 }
 987                 /*
 988                  * We'll have to do without, let our probedone
 989                  * routine finish up for us.
 990                  */
 991                 goto done;
 992         }
 993         case PROBE_SERIAL_NUM:
 994         {
 995                 struct scsi_vpd_unit_serial_number *serial_buf;
 996                 struct cam_ed* device;
 997
 998                 serial_buf = NULL;
 999                 device = periph->path->device;
1000                 if (device->serial_num != NULL) {
1001                         free(device->serial_num, M_CAMXPT);
1002                         device->serial_num = NULL;
1003                         device->serial_num_len = 0;
1004                 }
1005
1006                 if (scsi_vpd_supported_page(periph, SVPD_UNIT_SERIAL_NUMBER))
1007                         serial_buf = (struct scsi_vpd_unit_serial_number *)
1008                                 malloc(sizeof(*serial_buf), M_CAMXPT,
1009                                     M_NOWAIT|M_ZERO);
1010
1011                 if (serial_buf != NULL) {
1012                         scsi_inquiry(csio,
1013                                      /*retries*/4,
1014                                      probedone,
1015                                      MSG_SIMPLE_Q_TAG,
1016                                      (u_int8_t *)serial_buf,
1017                                      sizeof(*serial_buf),
1018                                      /*evpd*/TRUE,
1019                                      SVPD_UNIT_SERIAL_NUMBER,
1020                                      SSD_MIN_SIZE,
1021                                      /*timeout*/60 * 1000);
1022                         break;
1023                 }
1024                 goto done;
1025         }
1026         default:
1027                 panic("probestart: invalid action state 0x%x\n", softc->action);
1028         }
1029         start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
1030         cam_periph_doacquire(periph);
1031         xpt_action(start_ccb);
1032 }
1033
1034 static void
1035 proberequestdefaultnegotiation(struct cam_periph *periph)
1036 {
1037         struct ccb_trans_settings cts;
1038
1039         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
1040         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1041         cts.type = CTS_TYPE_USER_SETTINGS;
1042         xpt_action((union ccb *)&cts);
1043         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1044                 return;
1045         }
1046         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1047         cts.type = CTS_TYPE_CURRENT_SETTINGS;
1048         xpt_action((union ccb *)&cts);
1049 }
1050
1051 /*
1052  * Backoff Negotiation Code- only pertinent for SPI devices.
1053  */
1054 static int
1055 proberequestbackoff(struct cam_periph *periph, struct cam_ed *device)
1056 {
1057         struct ccb_trans_settings cts;
1058         struct ccb_trans_settings_spi *spi;
1059
1060         memset(&cts, 0, sizeof (cts));
1061         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
1062         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1063         cts.type = CTS_TYPE_CURRENT_SETTINGS;
1064         xpt_action((union ccb *)&cts);
1065         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1066                 if (bootverbose) {
1067                         xpt_print(periph->path,
1068                             "failed to get current device settings\n");
1069                 }
1070                 return (0);
1071         }
1072         if (cts.transport != XPORT_SPI) {
1073                 if (bootverbose) {
1074                         xpt_print(periph->path, "not SPI transport\n");
1075                 }
1076                 return (0);
1077         }
1078         spi = &cts.xport_specific.spi;
1079
1080         /*
1081          * We cannot renegotiate sync rate if we don't have one.
1082          */
1083         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
1084                 if (bootverbose) {
1085                         xpt_print(periph->path, "no sync rate known\n");
1086                 }
1087                 return (0);
1088         }
1089
1090         /*
1091          * We'll assert that we don't have to touch PPR options- the
1092          * SIM will see what we do with period and offset and adjust
1093          * the PPR options as appropriate.
1094          */
1095
1096         /*
1097          * A sync rate with unknown or zero offset is nonsensical.
1098          * A sync period of zero means Async.
1099          */
1100         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0
1101          || spi->sync_offset == 0 || spi->sync_period == 0) {
1102                 if (bootverbose) {
1103                         xpt_print(periph->path, "no sync rate available\n");
1104                 }
1105                 return (0);
1106         }
1107
1108         if (device->flags & CAM_DEV_DV_HIT_BOTTOM) {
1109                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1110                     ("hit async: giving up on DV\n"));
1111                 return (0);
1112         }
1113
1114
1115         /*
1116          * Jump sync_period up by one, but stop at 5MHz and fall back to Async.
1117          * We don't try to remember 'last' settings to see if the SIM actually
1118          * gets into the speed we want to set. We check on the SIM telling
1119          * us that a requested speed is bad, but otherwise don't try and
1120          * check the speed due to the asynchronous and handshake nature
1121          * of speed setting.
1122          */
1123         spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET;
1124         for (;;) {
1125                 spi->sync_period++;
1126                 if (spi->sync_period >= 0xf) {
1127                         spi->sync_period = 0;
1128                         spi->sync_offset = 0;
1129                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1130                             ("setting to async for DV\n"));
1131                         /*
1132                          * Once we hit async, we don't want to try
1133                          * any more settings.
1134                          */
1135                         device->flags |= CAM_DEV_DV_HIT_BOTTOM;
1136                 } else if (bootverbose) {
1137                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1138                             ("DV: period 0x%x\n", spi->sync_period));
1139                         printf("setting period to 0x%x\n", spi->sync_period);
1140                 }
1141                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1142                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1143                 xpt_action((union ccb *)&cts);
1144                 if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1145                         break;
1146                 }
1147                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1148                     ("DV: failed to set period 0x%x\n", spi->sync_period));
1149                 if (spi->sync_period == 0) {
1150                         return (0);
1151                 }
1152         }
1153         return (1);
1154 }
1155
1156 #define CCB_COMPLETED_OK(ccb) (((ccb).status & CAM_STATUS_MASK) == CAM_REQ_CMP)
1157
1158 static void
1159 probedone(struct cam_periph *periph, union ccb *done_ccb)
1160 {
1161         probe_softc *softc;
1162         struct cam_path *path;
1163         struct scsi_inquiry_data *inq_buf;
1164         u_int32_t  priority;
1165
1166         CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
1167
1168         softc = (probe_softc *)periph->softc;
1169         path = done_ccb->ccb_h.path;
1170         priority = done_ccb->ccb_h.pinfo.priority;
1171         cam_periph_assert(periph, MA_OWNED);
1172
1173         switch (softc->action) {
1174         case PROBE_TUR:
1175         {
1176                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1177
1178                         if (cam_periph_error(done_ccb, 0, SF_NO_PRINT) ==
1179                             ERESTART) {
1180 outr:
1181                                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1182                                 cam_release_devq(path, 0, 0, 0, FALSE);
1183                                 return;
1184                         }
1185                         else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1186                                 /* Don't wedge the queue */
1187                                 xpt_release_devq(done_ccb->ccb_h.path,
1188                                                  /*count*/1,
1189                                                  /*run_queue*/TRUE);
1190                 }
1191                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
1192                 xpt_release_ccb(done_ccb);
1193                 xpt_schedule(periph, priority);
1194 out:
1195                 /* Drop freeze taken due to CAM_DEV_QFREEZE and release. */
1196                 cam_release_devq(path, 0, 0, 0, FALSE);
1197                 cam_periph_release_locked(periph);
1198                 return;
1199         }
1200         case PROBE_INQUIRY:
1201         case PROBE_FULL_INQUIRY:
1202         {
1203                 if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
1204                         u_int8_t periph_qual;
1205
1206                         path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
1207                         scsi_find_quirk(path->device);
1208                         inq_buf = &path->device->inq_data;
1209
1210                         periph_qual = SID_QUAL(inq_buf);
1211
1212                         if (periph_qual == SID_QUAL_LU_CONNECTED ||
1213                             periph_qual == SID_QUAL_LU_OFFLINE) {
1214                                 u_int8_t len;
1215
1216                                 /*
1217                                  * We conservatively request only
1218                                  * SHORT_INQUIRY_LEN bytes of inquiry
1219                                  * information during our first try
1220                                  * at sending an INQUIRY. If the device
1221                                  * has more information to give,
1222                                  * perform a second request specifying
1223                                  * the amount of information the device
1224                                  * is willing to give.
1225                                  */
1226                                 len = inq_buf->additional_length
1227                                     + offsetof(struct scsi_inquiry_data,
1228                                                additional_length) + 1;
1229                                 if (softc->action == PROBE_INQUIRY
1230                                     && len > SHORT_INQUIRY_LENGTH) {
1231                                         PROBE_SET_ACTION(softc, PROBE_FULL_INQUIRY);
1232                                         xpt_release_ccb(done_ccb);
1233                                         xpt_schedule(periph, priority);
1234                                         goto out;
1235                                 }
1236
1237                                 scsi_devise_transport(path);
1238
1239                                 if (path->device->lun_id == 0 &&
1240                                     SID_ANSI_REV(inq_buf) > SCSI_REV_SPC2 &&
1241                                     (SCSI_QUIRK(path->device)->quirks &
1242                                      CAM_QUIRK_NORPTLUNS) == 0) {
1243                                         PROBE_SET_ACTION(softc,
1244                                             PROBE_REPORT_LUNS);
1245                                         /*
1246                                          * Start with room for *one* lun.
1247                                          */
1248                                         periph->path->target->rpl_size = 16;
1249                                 } else if (INQ_DATA_TQ_ENABLED(inq_buf))
1250                                         PROBE_SET_ACTION(softc,
1251                                             PROBE_MODE_SENSE);
1252                                 else
1253                                         PROBE_SET_ACTION(softc,
1254                                             PROBE_SUPPORTED_VPD_LIST);
1255
1256                                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1257                                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1258                                         xpt_acquire_device(path->device);
1259                                 }
1260                                 xpt_release_ccb(done_ccb);
1261                                 xpt_schedule(periph, priority);
1262                                 goto out;
1263                         } else if (path->device->lun_id == 0 &&
1264                             SID_ANSI_REV(inq_buf) >= SCSI_REV_SPC2 &&
1265                             (SCSI_QUIRK(path->device)->quirks &
1266                              CAM_QUIRK_NORPTLUNS) == 0) {
1267                                 PROBE_SET_ACTION(softc, PROBE_REPORT_LUNS);
1268                                 periph->path->target->rpl_size = 16;
1269                                 xpt_release_ccb(done_ccb);
1270                                 xpt_schedule(periph, priority);
1271                                 goto out;
1272                         }
1273                 } else if (cam_periph_error(done_ccb, 0,
1274                                             done_ccb->ccb_h.target_lun > 0
1275                                             ? SF_RETRY_UA|SF_QUIET_IR
1276                                             : SF_RETRY_UA) == ERESTART) {
1277                         goto outr;
1278                 } else {
1279                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1280                                 /* Don't wedge the queue */
1281                                 xpt_release_devq(done_ccb->ccb_h.path,
1282                                     /*count*/1, /*run_queue*/TRUE);
1283                         }
1284                         path->device->flags &= ~CAM_DEV_INQUIRY_DATA_VALID;
1285                 }
1286                 /*
1287                  * If we get to this point, we got an error status back
1288                  * from the inquiry and the error status doesn't require
1289                  * automatically retrying the command.  Therefore, the
1290                  * inquiry failed.  If we had inquiry information before
1291                  * for this device, but this latest inquiry command failed,
1292                  * the device has probably gone away.  If this device isn't
1293                  * already marked unconfigured, notify the peripheral
1294                  * drivers that this device is no more.
1295                  */
1296                 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
1297                         /* Send the async notification. */
1298                         xpt_async(AC_LOST_DEVICE, path, NULL);
1299                 PROBE_SET_ACTION(softc, PROBE_INVALID);
1300
1301                 xpt_release_ccb(done_ccb);
1302                 break;
1303         }
1304         case PROBE_REPORT_LUNS:
1305         {
1306                 struct ccb_scsiio *csio;
1307                 struct scsi_report_luns_data *lp;
1308                 u_int nlun, maxlun;
1309
1310                 csio = &done_ccb->csio;
1311
1312                 lp = (struct scsi_report_luns_data *)csio->data_ptr;
1313                 nlun = scsi_4btoul(lp->length) / 8;
1314                 maxlun = (csio->dxfer_len / 8) - 1;
1315
1316                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1317                         if (cam_periph_error(done_ccb, 0,
1318                                 done_ccb->ccb_h.target_lun > 0 ?
1319                                 SF_RETRY_UA|SF_QUIET_IR : SF_RETRY_UA) ==
1320                             ERESTART) {
1321                                 goto outr;
1322                         }
1323                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1324                                 xpt_release_devq(done_ccb->ccb_h.path, 1,
1325                                     TRUE);
1326                         }
1327                         free(lp, M_CAMXPT);
1328                         lp = NULL;
1329                 } else if (nlun > maxlun) {
1330                         /*
1331                          * Reallocate and retry to cover all luns
1332                          */
1333                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1334                             ("Probe: reallocating REPORT_LUNS for %u luns\n",
1335                              nlun));
1336                         free(lp, M_CAMXPT);
1337                         path->target->rpl_size = (nlun << 3) + 8;
1338                         xpt_release_ccb(done_ccb);
1339                         xpt_schedule(periph, priority);
1340                         goto out;
1341                 } else if (nlun == 0) {
1342                         /*
1343                          * If there don't appear to be any luns, bail.
1344                          */
1345                         free(lp, M_CAMXPT);
1346                         lp = NULL;
1347                 } else {
1348                         lun_id_t lun;
1349                         int idx;
1350
1351                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1352                            ("Probe: %u lun(s) reported\n", nlun));
1353
1354                         CAM_GET_LUN(lp, 0, lun);
1355                         /*
1356                          * If the first lun is not lun 0, then either there
1357                          * is no lun 0 in the list, or the list is unsorted.
1358                          */
1359                         if (lun != 0) {
1360                                 for (idx = 0; idx < nlun; idx++) {
1361                                         CAM_GET_LUN(lp, idx, lun);
1362                                         if (lun == 0) {
1363                                                 break;
1364                                         }
1365                                 }
1366                                 if (idx != nlun) {
1367                                         uint8_t tlun[8];
1368                                         memcpy(tlun,
1369                                             lp->luns[0].lundata, 8);
1370                                         memcpy(lp->luns[0].lundata,
1371                                             lp->luns[idx].lundata, 8);
1372                                         memcpy(lp->luns[idx].lundata,
1373                                             tlun, 8);
1374                                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1375                                             ("lun 0 in position %u\n", idx));
1376                                 }
1377                         }
1378                         /*
1379                          * If we have an old lun list, We can either
1380                          * retest luns that appear to have been dropped,
1381                          * or just nuke them.  We'll opt for the latter.
1382                          * This function will also install the new list
1383                          * in the target structure.
1384                          */
1385                         probe_purge_old(path, lp, softc->flags);
1386                         lp = NULL;
1387                 }
1388                 inq_buf = &path->device->inq_data;
1389                 if (path->device->flags & CAM_DEV_INQUIRY_DATA_VALID &&
1390                     (SID_QUAL(inq_buf) == SID_QUAL_LU_CONNECTED ||
1391                     SID_QUAL(inq_buf) == SID_QUAL_LU_OFFLINE)) {
1392                         if (INQ_DATA_TQ_ENABLED(inq_buf))
1393                                 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
1394                         else
1395                                 PROBE_SET_ACTION(softc,
1396                                     PROBE_SUPPORTED_VPD_LIST);
1397                         xpt_release_ccb(done_ccb);
1398                         xpt_schedule(periph, priority);
1399                         goto out;
1400                 }
1401                 if (lp) {
1402                         free(lp, M_CAMXPT);
1403                 }
1404                 PROBE_SET_ACTION(softc, PROBE_INVALID);
1405                 xpt_release_ccb(done_ccb);
1406                 break;
1407         }
1408         case PROBE_MODE_SENSE:
1409         {
1410                 struct ccb_scsiio *csio;
1411                 struct scsi_mode_header_6 *mode_hdr;
1412
1413                 csio = &done_ccb->csio;
1414                 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
1415                 if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
1416                         struct scsi_control_page *page;
1417                         u_int8_t *offset;
1418
1419                         offset = ((u_int8_t *)&mode_hdr[1])
1420                             + mode_hdr->blk_desc_len;
1421                         page = (struct scsi_control_page *)offset;
1422                         path->device->queue_flags = page->queue_flags;
1423                 } else if (cam_periph_error(done_ccb, 0,
1424                         SF_RETRY_UA|SF_NO_PRINT) == ERESTART) {
1425                         goto outr;
1426                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1427                         /* Don't wedge the queue */
1428                         xpt_release_devq(done_ccb->ccb_h.path,
1429                                          /*count*/1, /*run_queue*/TRUE);
1430                 }
1431                 xpt_release_ccb(done_ccb);
1432                 free(mode_hdr, M_CAMXPT);
1433                 PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
1434                 xpt_schedule(periph, priority);
1435                 goto out;
1436         }
1437         case PROBE_SUPPORTED_VPD_LIST:
1438         {
1439                 struct ccb_scsiio *csio;
1440                 struct scsi_vpd_supported_page_list *page_list;
1441
1442                 csio = &done_ccb->csio;
1443                 page_list =
1444                     (struct scsi_vpd_supported_page_list *)csio->data_ptr;
1445
1446                 if (path->device->supported_vpds != NULL) {
1447                         free(path->device->supported_vpds, M_CAMXPT);
1448                         path->device->supported_vpds = NULL;
1449                         path->device->supported_vpds_len = 0;
1450                 }
1451
1452                 if (page_list == NULL) {
1453                         /*
1454                          * Don't process the command as it was never sent
1455                          */
1456                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1457                         /* Got vpd list */
1458                         path->device->supported_vpds_len = page_list->length +
1459                             SVPD_SUPPORTED_PAGES_HDR_LEN;
1460                         path->device->supported_vpds = (uint8_t *)page_list;
1461                         xpt_release_ccb(done_ccb);
1462                         PROBE_SET_ACTION(softc, PROBE_DEVICE_ID);
1463                         xpt_schedule(periph, priority);
1464                         goto out;
1465                 } else if (cam_periph_error(done_ccb, 0,
1466                         SF_RETRY_UA|SF_NO_PRINT) == ERESTART) {
1467                         goto outr;
1468                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1469                         /* Don't wedge the queue */
1470                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1471                                          /*run_queue*/TRUE);
1472                 }
1473
1474                 if (page_list)
1475                         free(page_list, M_CAMXPT);
1476                 /* No VPDs available, skip to device check. */
1477                 csio->data_ptr = NULL;
1478                 goto probe_device_check;
1479         }
1480         case PROBE_DEVICE_ID:
1481         {
1482                 struct scsi_vpd_device_id *devid;
1483                 struct ccb_scsiio *csio;
1484                 uint32_t length = 0;
1485
1486                 csio = &done_ccb->csio;
1487                 devid = (struct scsi_vpd_device_id *)csio->data_ptr;
1488
1489                 /* Clean up from previous instance of this device */
1490                 if (path->device->device_id != NULL) {
1491                         path->device->device_id_len = 0;
1492                         free(path->device->device_id, M_CAMXPT);
1493                         path->device->device_id = NULL;
1494                 }
1495
1496                 if (devid == NULL) {
1497                         /* Don't process the command as it was never sent */
1498                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1499                         length = scsi_2btoul(devid->length);
1500                         if (length != 0) {
1501                                 /*
1502                                  * NB: device_id_len is actual response
1503                                  * size, not buffer size.
1504                                  */
1505                                 path->device->device_id_len = length +
1506                                     SVPD_DEVICE_ID_HDR_LEN;
1507                                 path->device->device_id = (uint8_t *)devid;
1508                         }
1509                 } else if (cam_periph_error(done_ccb, 0,
1510                         SF_RETRY_UA) == ERESTART) {
1511                         goto outr;
1512                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1513                         /* Don't wedge the queue */
1514                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1515                                          /*run_queue*/TRUE);
1516                 }
1517
1518                 /* Free the device id space if we don't use it */
1519                 if (devid && length == 0)
1520                         free(devid, M_CAMXPT);
1521                 xpt_release_ccb(done_ccb);
1522                 PROBE_SET_ACTION(softc, PROBE_EXTENDED_INQUIRY);
1523                 xpt_schedule(periph, priority);
1524                 goto out;
1525         }
1526         case PROBE_EXTENDED_INQUIRY: {
1527                 struct scsi_vpd_extended_inquiry_data *ext_inq;
1528                 struct ccb_scsiio *csio;
1529                 int32_t length = 0;
1530
1531                 csio = &done_ccb->csio;
1532                 ext_inq = (struct scsi_vpd_extended_inquiry_data *)
1533                     csio->data_ptr;
1534                 if (path->device->ext_inq != NULL) {
1535                         path->device->ext_inq_len = 0;
1536                         free(path->device->ext_inq, M_CAMXPT);
1537                         path->device->ext_inq = NULL;
1538                 }
1539
1540                 if (ext_inq == NULL) {
1541                         /* Don't process the command as it was never sent */
1542                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1543                         length = scsi_2btoul(ext_inq->page_length) +
1544                             __offsetof(struct scsi_vpd_extended_inquiry_data,
1545                             flags1);
1546                         length = min(length, sizeof(*ext_inq));
1547                         length -= csio->resid;
1548                         if (length > 0) {
1549                                 path->device->ext_inq_len = length;
1550                                 path->device->ext_inq = (uint8_t *)ext_inq;
1551                         }
1552                 } else if (cam_periph_error(done_ccb, 0, SF_RETRY_UA) ==
1553                     ERESTART) {
1554                         goto outr;
1555                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1556                         /* Don't wedge the queue */
1557                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1558                                          /*run_queue*/TRUE);
1559                 }
1560
1561                 /* Free the device id space if we don't use it */
1562                 if (ext_inq && length <= 0)
1563                         free(ext_inq, M_CAMXPT);
1564                 xpt_release_ccb(done_ccb);
1565                 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM);
1566                 xpt_schedule(periph, priority);
1567                 goto out;
1568         }
1569
1570 probe_device_check:
1571         case PROBE_SERIAL_NUM:
1572         {
1573                 struct ccb_scsiio *csio;
1574                 struct scsi_vpd_unit_serial_number *serial_buf;
1575                 u_int32_t  priority;
1576                 int changed;
1577                 int have_serialnum;
1578
1579                 changed = 1;
1580                 have_serialnum = 0;
1581                 csio = &done_ccb->csio;
1582                 priority = done_ccb->ccb_h.pinfo.priority;
1583                 serial_buf =
1584                     (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
1585
1586                 if (serial_buf == NULL) {
1587                         /*
1588                          * Don't process the command as it was never sent
1589                          */
1590                 } else if (cam_ccb_status(done_ccb) == CAM_REQ_CMP
1591                         && (serial_buf->length > 0)) {
1592
1593                         have_serialnum = 1;
1594                         path->device->serial_num =
1595                                 (u_int8_t *)malloc((serial_buf->length + 1),
1596                                                    M_CAMXPT, M_NOWAIT);
1597                         if (path->device->serial_num != NULL) {
1598                                 int start, slen;
1599
1600                                 start = strspn(serial_buf->serial_num, " ");
1601                                 slen = serial_buf->length - start;
1602                                 if (slen <= 0) {
1603                                         /*
1604                                          * SPC5r05 says that an all-space serial
1605                                          * number means no product serial number
1606                                          * is available
1607                                          */
1608                                         slen = 0;
1609                                 }
1610                                 memcpy(path->device->serial_num,
1611                                        &serial_buf->serial_num[start], slen);
1612                                 path->device->serial_num_len = slen;
1613                                 path->device->serial_num[slen] = '\0';
1614                         }
1615                 } else if (cam_periph_error(done_ccb, 0,
1616                         SF_RETRY_UA|SF_NO_PRINT) == ERESTART) {
1617                         goto outr;
1618                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1619                         /* Don't wedge the queue */
1620                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1621                                          /*run_queue*/TRUE);
1622                 }
1623
1624                 /*
1625                  * Let's see if we have seen this device before.
1626                  */
1627                 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
1628                         MD5_CTX context;
1629                         u_int8_t digest[16];
1630
1631                         MD5Init(&context);
1632
1633                         MD5Update(&context,
1634                                   (unsigned char *)&path->device->inq_data,
1635                                   sizeof(struct scsi_inquiry_data));
1636
1637                         if (have_serialnum)
1638                                 MD5Update(&context, path->device->serial_num,
1639                                           path->device->serial_num_len);
1640
1641                         MD5Final(digest, &context);
1642                         if (bcmp(softc->digest, digest, 16) == 0)
1643                                 changed = 0;
1644
1645                         /*
1646                          * XXX Do we need to do a TUR in order to ensure
1647                          *     that the device really hasn't changed???
1648                          */
1649                         if ((changed != 0)
1650                          && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
1651                                 xpt_async(AC_LOST_DEVICE, path, NULL);
1652                 }
1653                 if (serial_buf != NULL)
1654                         free(serial_buf, M_CAMXPT);
1655
1656                 if (changed != 0) {
1657                         /*
1658                          * Now that we have all the necessary
1659                          * information to safely perform transfer
1660                          * negotiations... Controllers don't perform
1661                          * any negotiation or tagged queuing until
1662                          * after the first XPT_SET_TRAN_SETTINGS ccb is
1663                          * received.  So, on a new device, just retrieve
1664                          * the user settings, and set them as the current
1665                          * settings to set the device up.
1666                          */
1667                         proberequestdefaultnegotiation(periph);
1668                         xpt_release_ccb(done_ccb);
1669
1670                         /*
1671                          * Perform a TUR to allow the controller to
1672                          * perform any necessary transfer negotiation.
1673                          */
1674                         PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
1675                         xpt_schedule(periph, priority);
1676                         goto out;
1677                 }
1678                 xpt_release_ccb(done_ccb);
1679                 break;
1680         }
1681         case PROBE_TUR_FOR_NEGOTIATION:
1682         case PROBE_DV_EXIT:
1683                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1684                         cam_periph_error(done_ccb, 0,
1685                             SF_NO_PRINT | SF_NO_RECOVERY | SF_NO_RETRY);
1686                 }
1687                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1688                         /* Don't wedge the queue */
1689                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1690                                          /*run_queue*/TRUE);
1691                 }
1692                 /*
1693                  * Do Domain Validation for lun 0 on devices that claim
1694                  * to support Synchronous Transfer modes.
1695                  */
1696                 if (softc->action == PROBE_TUR_FOR_NEGOTIATION
1697                  && done_ccb->ccb_h.target_lun == 0
1698                  && (path->device->inq_data.flags & SID_Sync) != 0
1699                  && (path->device->flags & CAM_DEV_IN_DV) == 0) {
1700                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1701                             ("Begin Domain Validation\n"));
1702                         path->device->flags |= CAM_DEV_IN_DV;
1703                         xpt_release_ccb(done_ccb);
1704                         PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV1);
1705                         xpt_schedule(periph, priority);
1706                         goto out;
1707                 }
1708                 if (softc->action == PROBE_DV_EXIT) {
1709                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1710                             ("Leave Domain Validation\n"));
1711                 }
1712                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1713                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1714                         xpt_acquire_device(path->device);
1715                 }
1716                 path->device->flags &=
1717                     ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
1718                 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
1719                         /* Inform the XPT that a new device has been found */
1720                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1721                         xpt_action(done_ccb);
1722                         xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
1723                                   done_ccb);
1724                 }
1725                 PROBE_SET_ACTION(softc, PROBE_DONE);
1726                 xpt_release_ccb(done_ccb);
1727                 break;
1728         case PROBE_INQUIRY_BASIC_DV1:
1729         case PROBE_INQUIRY_BASIC_DV2:
1730         {
1731                 struct scsi_inquiry_data *nbuf;
1732                 struct ccb_scsiio *csio;
1733
1734                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1735                         cam_periph_error(done_ccb, 0,
1736                             SF_NO_PRINT | SF_NO_RECOVERY | SF_NO_RETRY);
1737                 }
1738                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1739                         /* Don't wedge the queue */
1740                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1741                                          /*run_queue*/TRUE);
1742                 }
1743                 csio = &done_ccb->csio;
1744                 nbuf = (struct scsi_inquiry_data *)csio->data_ptr;
1745                 if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) {
1746                         xpt_print(path,
1747                             "inquiry data fails comparison at DV%d step\n",
1748                             softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2);
1749                         if (proberequestbackoff(periph, path->device)) {
1750                                 path->device->flags &= ~CAM_DEV_IN_DV;
1751                                 PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
1752                         } else {
1753                                 /* give up */
1754                                 PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
1755                         }
1756                         free(nbuf, M_CAMXPT);
1757                         xpt_release_ccb(done_ccb);
1758                         xpt_schedule(periph, priority);
1759                         goto out;
1760                 }
1761                 free(nbuf, M_CAMXPT);
1762                 if (softc->action == PROBE_INQUIRY_BASIC_DV1) {
1763                         PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV2);
1764                         xpt_release_ccb(done_ccb);
1765                         xpt_schedule(periph, priority);
1766                         goto out;
1767                 }
1768                 if (softc->action == PROBE_INQUIRY_BASIC_DV2) {
1769                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1770                             ("Leave Domain Validation Successfully\n"));
1771                 }
1772                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1773                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1774                         xpt_acquire_device(path->device);
1775                 }
1776                 path->device->flags &=
1777                     ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
1778                 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
1779                         /* Inform the XPT that a new device has been found */
1780                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1781                         xpt_action(done_ccb);
1782                         xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
1783                                   done_ccb);
1784                 }
1785                 PROBE_SET_ACTION(softc, PROBE_DONE);
1786                 xpt_release_ccb(done_ccb);
1787                 break;
1788         }
1789         default:
1790                 panic("probedone: invalid action state 0x%x\n", softc->action);
1791         }
1792         done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
1793         TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
1794         done_ccb->ccb_h.status = CAM_REQ_CMP;
1795         xpt_done(done_ccb);
1796         if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
1797                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe completed\n"));
1798                 /* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */
1799                 cam_release_devq(path, 0, 0, 0, FALSE);
1800                 cam_periph_release_locked(periph);
1801                 cam_periph_invalidate(periph);
1802                 cam_periph_release_locked(periph);
1803         } else {
1804                 probeschedule(periph);
1805                 goto out;
1806         }
1807 }
1808
1809 static void
1810 probe_purge_old(struct cam_path *path, struct scsi_report_luns_data *new,
1811     probe_flags flags)
1812 {
1813         struct cam_path *tp;
1814         struct scsi_report_luns_data *old;
1815         u_int idx1, idx2, nlun_old, nlun_new;
1816         lun_id_t this_lun;
1817         u_int8_t *ol, *nl;
1818
1819         if (path->target == NULL) {
1820                 return;
1821         }
1822         mtx_lock(&path->target->luns_mtx);
1823         old = path->target->luns;
1824         path->target->luns = new;
1825         mtx_unlock(&path->target->luns_mtx);
1826         if (old == NULL)
1827                 return;
1828         nlun_old = scsi_4btoul(old->length) / 8;
1829         nlun_new = scsi_4btoul(new->length) / 8;
1830
1831         /*
1832          * We are not going to assume sorted lists. Deal.
1833          */
1834         for (idx1 = 0; idx1 < nlun_old; idx1++) {
1835                 ol = old->luns[idx1].lundata;
1836                 for (idx2 = 0; idx2 < nlun_new; idx2++) {
1837                         nl = new->luns[idx2].lundata;
1838                         if (memcmp(nl, ol, 8) == 0) {
1839                                 break;
1840                         }
1841                 }
1842                 if (idx2 < nlun_new) {
1843                         continue;
1844                 }
1845                 /*
1846                  * An 'old' item not in the 'new' list.
1847                  * Nuke it. Except that if it is lun 0,
1848                  * that would be what the probe state
1849                  * machine is currently working on,
1850                  * so we won't do that.
1851                  */
1852                 CAM_GET_LUN(old, idx1, this_lun);
1853                 if (this_lun == 0) {
1854                         continue;
1855                 }
1856
1857                 /*
1858                  * We also cannot nuke it if it is
1859                  * not in a lun format we understand
1860                  * and replace the LUN with a "simple" LUN
1861                  * if that is all the HBA supports.
1862                  */
1863                 if (!(flags & PROBE_EXTLUN)) {
1864                         if (!CAM_CAN_GET_SIMPLE_LUN(old, idx1))
1865                                 continue;
1866                         CAM_GET_SIMPLE_LUN(old, idx1, this_lun);
1867                 }
1868
1869                 if (xpt_create_path(&tp, NULL, xpt_path_path_id(path),
1870                     xpt_path_target_id(path), this_lun) == CAM_REQ_CMP) {
1871                         xpt_async(AC_LOST_DEVICE, tp, NULL);
1872                         xpt_free_path(tp);
1873                 }
1874         }
1875         free(old, M_CAMXPT);
1876 }
1877
1878 static void
1879 probecleanup(struct cam_periph *periph)
1880 {
1881         free(periph->softc, M_CAMXPT);
1882 }
1883
1884 static void
1885 scsi_find_quirk(struct cam_ed *device)
1886 {
1887         struct scsi_quirk_entry *quirk;
1888         caddr_t match;
1889
1890         match = cam_quirkmatch((caddr_t)&device->inq_data,
1891                                (caddr_t)scsi_quirk_table,
1892                                nitems(scsi_quirk_table),
1893                                sizeof(*scsi_quirk_table), scsi_inquiry_match);
1894
1895         if (match == NULL)
1896                 panic("xpt_find_quirk: device didn't match wildcard entry!!");
1897
1898         quirk = (struct scsi_quirk_entry *)match;
1899         device->quirk = quirk;
1900         device->mintags = quirk->mintags;
1901         device->maxtags = quirk->maxtags;
1902 }
1903
1904 static int
1905 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS)
1906 {
1907         int error, val;
1908
1909         val = cam_srch_hi;
1910         error = sysctl_handle_int(oidp, &val, 0, req);
1911         if (error != 0 || req->newptr == NULL)
1912                 return (error);
1913         if (val == 0 || val == 1) {
1914                 cam_srch_hi = val;
1915                 return (0);
1916         } else {
1917                 return (EINVAL);
1918         }
1919 }
1920
1921 typedef struct {
1922         union   ccb *request_ccb;
1923         struct  ccb_pathinq *cpi;
1924         int     counter;
1925         int     lunindex[0];
1926 } scsi_scan_bus_info;
1927
1928 /*
1929  * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
1930  * As the scan progresses, scsi_scan_bus is used as the
1931  * callback on completion function.
1932  */
1933 static void
1934 scsi_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
1935 {
1936         struct mtx *mtx;
1937
1938         CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
1939                   ("scsi_scan_bus\n"));
1940         switch (request_ccb->ccb_h.func_code) {
1941         case XPT_SCAN_BUS:
1942         case XPT_SCAN_TGT:
1943         {
1944                 scsi_scan_bus_info *scan_info;
1945                 union   ccb *work_ccb, *reset_ccb;
1946                 struct  cam_path *path;
1947                 u_int   i;
1948                 u_int   low_target, max_target;
1949                 u_int   initiator_id;
1950
1951                 /* Find out the characteristics of the bus */
1952                 work_ccb = xpt_alloc_ccb_nowait();
1953                 if (work_ccb == NULL) {
1954                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1955                         xpt_done(request_ccb);
1956                         return;
1957                 }
1958                 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
1959                               request_ccb->ccb_h.pinfo.priority);
1960                 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
1961                 xpt_action(work_ccb);
1962                 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
1963                         request_ccb->ccb_h.status = work_ccb->ccb_h.status;
1964                         xpt_free_ccb(work_ccb);
1965                         xpt_done(request_ccb);
1966                         return;
1967                 }
1968
1969                 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
1970                         /*
1971                          * Can't scan the bus on an adapter that
1972                          * cannot perform the initiator role.
1973                          */
1974                         request_ccb->ccb_h.status = CAM_REQ_CMP;
1975                         xpt_free_ccb(work_ccb);
1976                         xpt_done(request_ccb);
1977                         return;
1978                 }
1979
1980                 /* We may need to reset bus first, if we haven't done it yet. */
1981                 if ((work_ccb->cpi.hba_inquiry &
1982                     (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) &&
1983                     !(work_ccb->cpi.hba_misc & PIM_NOBUSRESET) &&
1984                     !timevalisset(&request_ccb->ccb_h.path->bus->last_reset) &&
1985                     (reset_ccb = xpt_alloc_ccb_nowait()) != NULL) {
1986                         xpt_setup_ccb(&reset_ccb->ccb_h, request_ccb->ccb_h.path,
1987                               CAM_PRIORITY_NONE);
1988                         reset_ccb->ccb_h.func_code = XPT_RESET_BUS;
1989                         xpt_action(reset_ccb);
1990                         if (reset_ccb->ccb_h.status != CAM_REQ_CMP) {
1991                                 request_ccb->ccb_h.status = reset_ccb->ccb_h.status;
1992                                 xpt_free_ccb(reset_ccb);
1993                                 xpt_free_ccb(work_ccb);
1994                                 xpt_done(request_ccb);
1995                                 return;
1996                         }
1997                         xpt_free_ccb(reset_ccb);
1998                 }
1999
2000                 /* Save some state for use while we probe for devices */
2001                 scan_info = (scsi_scan_bus_info *) malloc(sizeof(scsi_scan_bus_info) +
2002                     (work_ccb->cpi.max_target * sizeof (u_int)), M_CAMXPT, M_ZERO|M_NOWAIT);
2003                 if (scan_info == NULL) {
2004                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
2005                         xpt_free_ccb(work_ccb);
2006                         xpt_done(request_ccb);
2007                         return;
2008                 }
2009                 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
2010                    ("SCAN start for %p\n", scan_info));
2011                 scan_info->request_ccb = request_ccb;
2012                 scan_info->cpi = &work_ccb->cpi;
2013
2014                 /* Cache on our stack so we can work asynchronously */
2015                 max_target = scan_info->cpi->max_target;
2016                 low_target = 0;
2017                 initiator_id = scan_info->cpi->initiator_id;
2018
2019
2020                 /*
2021                  * We can scan all targets in parallel, or do it sequentially.
2022                  */
2023
2024                 if (request_ccb->ccb_h.func_code == XPT_SCAN_TGT) {
2025                         max_target = low_target = request_ccb->ccb_h.target_id;
2026                         scan_info->counter = 0;
2027                 } else if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
2028                         max_target = 0;
2029                         scan_info->counter = 0;
2030                 } else {
2031                         scan_info->counter = scan_info->cpi->max_target + 1;
2032                         if (scan_info->cpi->initiator_id < scan_info->counter) {
2033                                 scan_info->counter--;
2034                         }
2035                 }
2036                 mtx = xpt_path_mtx(scan_info->request_ccb->ccb_h.path);
2037                 mtx_unlock(mtx);
2038
2039                 for (i = low_target; i <= max_target; i++) {
2040                         cam_status status;
2041                         if (i == initiator_id)
2042                                 continue;
2043
2044                         status = xpt_create_path(&path, NULL,
2045                                                  request_ccb->ccb_h.path_id,
2046                                                  i, 0);
2047                         if (status != CAM_REQ_CMP) {
2048                                 printf("scsi_scan_bus: xpt_create_path failed"
2049                                        " with status %#x, bus scan halted\n",
2050                                        status);
2051                                 free(scan_info, M_CAMXPT);
2052                                 request_ccb->ccb_h.status = status;
2053                                 xpt_free_ccb(work_ccb);
2054                                 xpt_done(request_ccb);
2055                                 break;
2056                         }
2057                         work_ccb = xpt_alloc_ccb_nowait();
2058                         if (work_ccb == NULL) {
2059                                 xpt_free_ccb((union ccb *)scan_info->cpi);
2060                                 free(scan_info, M_CAMXPT);
2061                                 xpt_free_path(path);
2062                                 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
2063                                 xpt_done(request_ccb);
2064                                 break;
2065                         }
2066                         xpt_setup_ccb(&work_ccb->ccb_h, path,
2067                                       request_ccb->ccb_h.pinfo.priority);
2068                         work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2069                         work_ccb->ccb_h.cbfcnp = scsi_scan_bus;
2070                         work_ccb->ccb_h.flags |= CAM_UNLOCKED;
2071                         work_ccb->ccb_h.ppriv_ptr0 = scan_info;
2072                         work_ccb->crcn.flags = request_ccb->crcn.flags;
2073                         xpt_action(work_ccb);
2074                 }
2075
2076                 mtx_lock(mtx);
2077                 break;
2078         }
2079         case XPT_SCAN_LUN:
2080         {
2081                 cam_status status;
2082                 struct cam_path *path, *oldpath;
2083                 scsi_scan_bus_info *scan_info;
2084                 struct cam_et *target;
2085                 struct cam_ed *device, *nextdev;
2086                 int next_target;
2087                 path_id_t path_id;
2088                 target_id_t target_id;
2089                 lun_id_t lun_id;
2090
2091                 oldpath = request_ccb->ccb_h.path;
2092
2093                 status = cam_ccb_status(request_ccb);
2094                 scan_info = (scsi_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
2095                 path_id = request_ccb->ccb_h.path_id;
2096                 target_id = request_ccb->ccb_h.target_id;
2097                 lun_id = request_ccb->ccb_h.target_lun;
2098                 target = request_ccb->ccb_h.path->target;
2099                 next_target = 1;
2100
2101                 mtx = xpt_path_mtx(scan_info->request_ccb->ccb_h.path);
2102                 mtx_lock(mtx);
2103                 mtx_lock(&target->luns_mtx);
2104                 if (target->luns) {
2105                         lun_id_t first;
2106                         u_int nluns = scsi_4btoul(target->luns->length) / 8;
2107
2108                         /*
2109                          * Make sure we skip over lun 0 if it's the first member
2110                          * of the list as we've actually just finished probing
2111                          * it.
2112                          */
2113                         CAM_GET_LUN(target->luns, 0, first);
2114                         if (first == 0 && scan_info->lunindex[target_id] == 0) {
2115                                 scan_info->lunindex[target_id]++;
2116                         }
2117
2118                         /*
2119                          * Skip any LUNs that the HBA can't deal with.
2120                          */
2121                         while (scan_info->lunindex[target_id] < nluns) {
2122                                 if (scan_info->cpi->hba_misc & PIM_EXTLUNS) {
2123                                         CAM_GET_LUN(target->luns,
2124                                             scan_info->lunindex[target_id],
2125                                             lun_id);
2126                                         break;
2127                                 }
2128
2129                                 if (CAM_CAN_GET_SIMPLE_LUN(target->luns,
2130                                     scan_info->lunindex[target_id])) {
2131                                         CAM_GET_SIMPLE_LUN(target->luns,
2132                                             scan_info->lunindex[target_id],
2133                                             lun_id);
2134                                         break;
2135                                 }
2136
2137                                 scan_info->lunindex[target_id]++;
2138                         }
2139
2140                         if (scan_info->lunindex[target_id] < nluns) {
2141                                 mtx_unlock(&target->luns_mtx);
2142                                 next_target = 0;
2143                                 CAM_DEBUG(request_ccb->ccb_h.path,
2144                                     CAM_DEBUG_PROBE,
2145                                    ("next lun to try at index %u is %jx\n",
2146                                    scan_info->lunindex[target_id],
2147                                    (uintmax_t)lun_id));
2148                                 scan_info->lunindex[target_id]++;
2149                         } else {
2150                                 mtx_unlock(&target->luns_mtx);
2151                                 /* We're done with scanning all luns. */
2152                         }
2153                 } else {
2154                         mtx_unlock(&target->luns_mtx);
2155                         device = request_ccb->ccb_h.path->device;
2156                         /* Continue sequential LUN scan if: */
2157                         /*  -- we have more LUNs that need recheck */
2158                         mtx_lock(&target->bus->eb_mtx);
2159                         nextdev = device;
2160                         while ((nextdev = TAILQ_NEXT(nextdev, links)) != NULL)
2161                                 if ((nextdev->flags & CAM_DEV_UNCONFIGURED) == 0)
2162                                         break;
2163                         mtx_unlock(&target->bus->eb_mtx);
2164                         if (nextdev != NULL) {
2165                                 next_target = 0;
2166                         /*  -- stop if CAM_QUIRK_NOLUNS is set. */
2167                         } else if (SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOLUNS) {
2168                                 next_target = 1;
2169                         /*  -- this LUN is connected and its SCSI version
2170                          *     allows more LUNs. */
2171                         } else if ((device->flags & CAM_DEV_UNCONFIGURED) == 0) {
2172                                 if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
2173                                     CAN_SRCH_HI_DENSE(device))
2174                                         next_target = 0;
2175                         /*  -- this LUN is disconnected, its SCSI version
2176                          *     allows more LUNs and we guess they may be. */
2177                         } else if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0) {
2178                                 if (lun_id < (CAM_SCSI2_MAXLUN-1) ||
2179                                     CAN_SRCH_HI_SPARSE(device))
2180                                         next_target = 0;
2181                         }
2182                         if (next_target == 0) {
2183                                 lun_id++;
2184                                 if (lun_id > scan_info->cpi->max_lun)
2185                                         next_target = 1;
2186                         }
2187                 }
2188
2189                 /*
2190                  * Check to see if we scan any further luns.
2191                  */
2192                 if (next_target) {
2193                         int done;
2194
2195                         /*
2196                          * Free the current request path- we're done with it.
2197                          */
2198                         xpt_free_path(oldpath);
2199  hop_again:
2200                         done = 0;
2201                         if (scan_info->request_ccb->ccb_h.func_code == XPT_SCAN_TGT) {
2202                                 done = 1;
2203                         } else if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
2204                                 scan_info->counter++;
2205                                 if (scan_info->counter ==
2206                                     scan_info->cpi->initiator_id) {
2207                                         scan_info->counter++;
2208                                 }
2209                                 if (scan_info->counter >=
2210                                     scan_info->cpi->max_target+1) {
2211                                         done = 1;
2212                                 }
2213                         } else {
2214                                 scan_info->counter--;
2215                                 if (scan_info->counter == 0) {
2216                                         done = 1;
2217                                 }
2218                         }
2219                         if (done) {
2220                                 mtx_unlock(mtx);
2221                                 xpt_free_ccb(request_ccb);
2222                                 xpt_free_ccb((union ccb *)scan_info->cpi);
2223                                 request_ccb = scan_info->request_ccb;
2224                                 CAM_DEBUG(request_ccb->ccb_h.path,
2225                                     CAM_DEBUG_TRACE,
2226                                    ("SCAN done for %p\n", scan_info));
2227                                 free(scan_info, M_CAMXPT);
2228                                 request_ccb->ccb_h.status = CAM_REQ_CMP;
2229                                 xpt_done(request_ccb);
2230                                 break;
2231                         }
2232
2233                         if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) {
2234                                 mtx_unlock(mtx);
2235                                 xpt_free_ccb(request_ccb);
2236                                 break;
2237                         }
2238                         status = xpt_create_path(&path, NULL,
2239                             scan_info->request_ccb->ccb_h.path_id,
2240                             scan_info->counter, 0);
2241                         if (status != CAM_REQ_CMP) {
2242                                 mtx_unlock(mtx);
2243                                 printf("scsi_scan_bus: xpt_create_path failed"
2244                                     " with status %#x, bus scan halted\n",
2245                                     status);
2246                                 xpt_free_ccb(request_ccb);
2247                                 xpt_free_ccb((union ccb *)scan_info->cpi);
2248                                 request_ccb = scan_info->request_ccb;
2249                                 free(scan_info, M_CAMXPT);
2250                                 request_ccb->ccb_h.status = status;
2251                                 xpt_done(request_ccb);
2252                                 break;
2253                         }
2254                         xpt_setup_ccb(&request_ccb->ccb_h, path,
2255                             request_ccb->ccb_h.pinfo.priority);
2256                         request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2257                         request_ccb->ccb_h.cbfcnp = scsi_scan_bus;
2258                         request_ccb->ccb_h.flags |= CAM_UNLOCKED;
2259                         request_ccb->ccb_h.ppriv_ptr0 = scan_info;
2260                         request_ccb->crcn.flags =
2261                             scan_info->request_ccb->crcn.flags;
2262                 } else {
2263                         status = xpt_create_path(&path, NULL,
2264                                                  path_id, target_id, lun_id);
2265                         /*
2266                          * Free the old request path- we're done with it. We
2267                          * do this *after* creating the new path so that
2268                          * we don't remove a target that has our lun list
2269                          * in the case that lun 0 is not present.
2270                          */
2271                         xpt_free_path(oldpath);
2272                         if (status != CAM_REQ_CMP) {
2273                                 printf("scsi_scan_bus: xpt_create_path failed "
2274                                        "with status %#x, halting LUN scan\n",
2275                                        status);
2276                                 goto hop_again;
2277                         }
2278                         xpt_setup_ccb(&request_ccb->ccb_h, path,
2279                                       request_ccb->ccb_h.pinfo.priority);
2280                         request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2281                         request_ccb->ccb_h.cbfcnp = scsi_scan_bus;
2282                         request_ccb->ccb_h.flags |= CAM_UNLOCKED;
2283                         request_ccb->ccb_h.ppriv_ptr0 = scan_info;
2284                         request_ccb->crcn.flags =
2285                                 scan_info->request_ccb->crcn.flags;
2286                 }
2287                 mtx_unlock(mtx);
2288                 xpt_action(request_ccb);
2289                 break;
2290         }
2291         default:
2292                 break;
2293         }
2294 }
2295
2296 static void
2297 scsi_scan_lun(struct cam_periph *periph, struct cam_path *path,
2298              cam_flags flags, union ccb *request_ccb)
2299 {
2300         struct ccb_pathinq cpi;
2301         cam_status status;
2302         struct cam_path *new_path;
2303         struct cam_periph *old_periph;
2304         int lock;
2305
2306         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("scsi_scan_lun\n"));
2307
2308         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2309         cpi.ccb_h.func_code = XPT_PATH_INQ;
2310         xpt_action((union ccb *)&cpi);
2311
2312         if (cpi.ccb_h.status != CAM_REQ_CMP) {
2313                 if (request_ccb != NULL) {
2314                         request_ccb->ccb_h.status = cpi.ccb_h.status;
2315                         xpt_done(request_ccb);
2316                 }
2317                 return;
2318         }
2319
2320         if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
2321                 /*
2322                  * Can't scan the bus on an adapter that
2323                  * cannot perform the initiator role.
2324                  */
2325                 if (request_ccb != NULL) {
2326                         request_ccb->ccb_h.status = CAM_REQ_CMP;
2327                         xpt_done(request_ccb);
2328                 }
2329                 return;
2330         }
2331
2332         if (request_ccb == NULL) {
2333                 request_ccb = xpt_alloc_ccb_nowait();
2334                 if (request_ccb == NULL) {
2335                         xpt_print(path, "scsi_scan_lun: can't allocate CCB, "
2336                             "can't continue\n");
2337                         return;
2338                 }
2339                 status = xpt_create_path(&new_path, NULL,
2340                                           path->bus->path_id,
2341                                           path->target->target_id,
2342                                           path->device->lun_id);
2343                 if (status != CAM_REQ_CMP) {
2344                         xpt_print(path, "scsi_scan_lun: can't create path, "
2345                             "can't continue\n");
2346                         xpt_free_ccb(request_ccb);
2347                         return;
2348                 }
2349                 xpt_setup_ccb(&request_ccb->ccb_h, new_path, CAM_PRIORITY_XPT);
2350                 request_ccb->ccb_h.cbfcnp = xptscandone;
2351                 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2352                 request_ccb->ccb_h.flags |= CAM_UNLOCKED;
2353                 request_ccb->crcn.flags = flags;
2354         }
2355
2356         lock = (xpt_path_owned(path) == 0);
2357         if (lock)
2358                 xpt_path_lock(path);
2359         if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
2360                 if ((old_periph->flags & CAM_PERIPH_INVALID) == 0) {
2361                         probe_softc *softc;
2362
2363                         softc = (probe_softc *)old_periph->softc;
2364                         TAILQ_INSERT_TAIL(&softc->request_ccbs,
2365                             &request_ccb->ccb_h, periph_links.tqe);
2366                 } else {
2367                         request_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
2368                         xpt_done(request_ccb);
2369                 }
2370         } else {
2371                 status = cam_periph_alloc(proberegister, NULL, probecleanup,
2372                                           probestart, "probe",
2373                                           CAM_PERIPH_BIO,
2374                                           request_ccb->ccb_h.path, NULL, 0,
2375                                           request_ccb);
2376
2377                 if (status != CAM_REQ_CMP) {
2378                         xpt_print(path, "scsi_scan_lun: cam_alloc_periph "
2379                             "returned an error, can't continue probe\n");
2380                         request_ccb->ccb_h.status = status;
2381                         xpt_done(request_ccb);
2382                 }
2383         }
2384         if (lock)
2385                 xpt_path_unlock(path);
2386 }
2387
2388 static void
2389 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
2390 {
2391
2392         xpt_free_path(done_ccb->ccb_h.path);
2393         xpt_free_ccb(done_ccb);
2394 }
2395
2396 static struct cam_ed *
2397 scsi_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
2398 {
2399         struct scsi_quirk_entry *quirk;
2400         struct cam_ed *device;
2401
2402         device = xpt_alloc_device(bus, target, lun_id);
2403         if (device == NULL)
2404                 return (NULL);
2405
2406         /*
2407          * Take the default quirk entry until we have inquiry
2408          * data and can determine a better quirk to use.
2409          */
2410         quirk = &scsi_quirk_table[nitems(scsi_quirk_table) - 1];
2411         device->quirk = (void *)quirk;
2412         device->mintags = quirk->mintags;
2413         device->maxtags = quirk->maxtags;
2414         bzero(&device->inq_data, sizeof(device->inq_data));
2415         device->inq_flags = 0;
2416         device->queue_flags = 0;
2417         device->serial_num = NULL;
2418         device->serial_num_len = 0;
2419         device->device_id = NULL;
2420         device->device_id_len = 0;
2421         device->supported_vpds = NULL;
2422         device->supported_vpds_len = 0;
2423         return (device);
2424 }
2425
2426 static void
2427 scsi_devise_transport(struct cam_path *path)
2428 {
2429         struct ccb_pathinq cpi;
2430         struct ccb_trans_settings cts;
2431         struct scsi_inquiry_data *inq_buf;
2432
2433         /* Get transport information from the SIM */
2434         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2435         cpi.ccb_h.func_code = XPT_PATH_INQ;
2436         xpt_action((union ccb *)&cpi);
2437
2438         inq_buf = NULL;
2439         if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
2440                 inq_buf = &path->device->inq_data;
2441         path->device->protocol = PROTO_SCSI;
2442         path->device->protocol_version =
2443             inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
2444         path->device->transport = cpi.transport;
2445         path->device->transport_version = cpi.transport_version;
2446
2447         /*
2448          * Any device not using SPI3 features should
2449          * be considered SPI2 or lower.
2450          */
2451         if (inq_buf != NULL) {
2452                 if (path->device->transport == XPORT_SPI
2453                  && (inq_buf->spi3data & SID_SPI_MASK) == 0
2454                  && path->device->transport_version > 2)
2455                         path->device->transport_version = 2;
2456         } else {
2457                 struct cam_ed* otherdev;
2458
2459                 for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
2460                      otherdev != NULL;
2461                      otherdev = TAILQ_NEXT(otherdev, links)) {
2462                         if (otherdev != path->device)
2463                                 break;
2464                 }
2465
2466                 if (otherdev != NULL) {
2467                         /*
2468                          * Initially assume the same versioning as
2469                          * prior luns for this target.
2470                          */
2471                         path->device->protocol_version =
2472                             otherdev->protocol_version;
2473                         path->device->transport_version =
2474                             otherdev->transport_version;
2475                 } else {
2476                         /* Until we know better, opt for safety */
2477                         path->device->protocol_version = 2;
2478                         if (path->device->transport == XPORT_SPI)
2479                                 path->device->transport_version = 2;
2480                         else
2481                                 path->device->transport_version = 0;
2482                 }
2483         }
2484
2485         /*
2486          * XXX
2487          * For a device compliant with SPC-2 we should be able
2488          * to determine the transport version supported by
2489          * scrutinizing the version descriptors in the
2490          * inquiry buffer.
2491          */
2492
2493         /* Tell the controller what we think */
2494         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
2495         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
2496         cts.type = CTS_TYPE_CURRENT_SETTINGS;
2497         cts.transport = path->device->transport;
2498         cts.transport_version = path->device->transport_version;
2499         cts.protocol = path->device->protocol;
2500         cts.protocol_version = path->device->protocol_version;
2501         cts.proto_specific.valid = 0;
2502         cts.xport_specific.valid = 0;
2503         xpt_action((union ccb *)&cts);
2504 }
2505
2506 static void
2507 scsi_dev_advinfo(union ccb *start_ccb)
2508 {
2509         struct cam_ed *device;
2510         struct ccb_dev_advinfo *cdai;
2511         off_t amt;
2512
2513         start_ccb->ccb_h.status = CAM_REQ_INVALID;
2514         device = start_ccb->ccb_h.path->device;
2515         cdai = &start_ccb->cdai;
2516         switch(cdai->buftype) {
2517         case CDAI_TYPE_SCSI_DEVID:
2518                 if (cdai->flags & CDAI_FLAG_STORE)
2519                         return;
2520                 cdai->provsiz = device->device_id_len;
2521                 if (device->device_id_len == 0)
2522                         break;
2523                 amt = device->device_id_len;
2524                 if (cdai->provsiz > cdai->bufsiz)
2525                         amt = cdai->bufsiz;
2526                 memcpy(cdai->buf, device->device_id, amt);
2527                 break;
2528         case CDAI_TYPE_SERIAL_NUM:
2529                 if (cdai->flags & CDAI_FLAG_STORE)
2530                         return;
2531                 cdai->provsiz = device->serial_num_len;
2532                 if (device->serial_num_len == 0)
2533                         break;
2534                 amt = device->serial_num_len;
2535                 if (cdai->provsiz > cdai->bufsiz)
2536                         amt = cdai->bufsiz;
2537                 memcpy(cdai->buf, device->serial_num, amt);
2538                 break;
2539         case CDAI_TYPE_PHYS_PATH:
2540                 if (cdai->flags & CDAI_FLAG_STORE) {
2541                         if (device->physpath != NULL) {
2542                                 free(device->physpath, M_CAMXPT);
2543                                 device->physpath = NULL;
2544                                 device->physpath_len = 0;
2545                         }
2546                         /* Clear existing buffer if zero length */
2547                         if (cdai->bufsiz == 0)
2548                                 break;
2549                         device->physpath = malloc(cdai->bufsiz, M_CAMXPT, M_NOWAIT);
2550                         if (device->physpath == NULL) {
2551                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
2552                                 return;
2553                         }
2554                         device->physpath_len = cdai->bufsiz;
2555                         memcpy(device->physpath, cdai->buf, cdai->bufsiz);
2556                 } else {
2557                         cdai->provsiz = device->physpath_len;
2558                         if (device->physpath_len == 0)
2559                                 break;
2560                         amt = device->physpath_len;
2561                         if (cdai->provsiz > cdai->bufsiz)
2562                                 amt = cdai->bufsiz;
2563                         memcpy(cdai->buf, device->physpath, amt);
2564                 }
2565                 break;
2566         case CDAI_TYPE_RCAPLONG:
2567                 if (cdai->flags & CDAI_FLAG_STORE) {
2568                         if (device->rcap_buf != NULL) {
2569                                 free(device->rcap_buf, M_CAMXPT);
2570                                 device->rcap_buf = NULL;
2571                         }
2572
2573                         device->rcap_len = cdai->bufsiz;
2574                         /* Clear existing buffer if zero length */
2575                         if (cdai->bufsiz == 0)
2576                                 break;
2577
2578                         device->rcap_buf = malloc(cdai->bufsiz, M_CAMXPT,
2579                                                   M_NOWAIT);
2580                         if (device->rcap_buf == NULL) {
2581                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
2582                                 return;
2583                         }
2584
2585                         memcpy(device->rcap_buf, cdai->buf, cdai->bufsiz);
2586                 } else {
2587                         cdai->provsiz = device->rcap_len;
2588                         if (device->rcap_len == 0)
2589                                 break;
2590                         amt = device->rcap_len;
2591                         if (cdai->provsiz > cdai->bufsiz)
2592                                 amt = cdai->bufsiz;
2593                         memcpy(cdai->buf, device->rcap_buf, amt);
2594                 }
2595                 break;
2596         case CDAI_TYPE_EXT_INQ:
2597                 /*
2598                  * We fetch extended inquiry data during probe, if
2599                  * available.  We don't allow changing it.
2600                  */
2601                 if (cdai->flags & CDAI_FLAG_STORE)
2602                         return;
2603                 cdai->provsiz = device->ext_inq_len;
2604                 if (device->ext_inq_len == 0)
2605                         break;
2606                 amt = device->ext_inq_len;
2607                 if (cdai->provsiz > cdai->bufsiz)
2608                         amt = cdai->bufsiz;
2609                 memcpy(cdai->buf, device->ext_inq, amt);
2610                 break;
2611         default:
2612                 return;
2613         }
2614         start_ccb->ccb_h.status = CAM_REQ_CMP;
2615
2616         if (cdai->flags & CDAI_FLAG_STORE) {
2617                 xpt_async(AC_ADVINFO_CHANGED, start_ccb->ccb_h.path,
2618                           (void *)(uintptr_t)cdai->buftype);
2619         }
2620 }
2621
2622 static void
2623 scsi_action(union ccb *start_ccb)
2624 {
2625
2626         switch (start_ccb->ccb_h.func_code) {
2627         case XPT_SET_TRAN_SETTINGS:
2628         {
2629                 scsi_set_transfer_settings(&start_ccb->cts,
2630                                            start_ccb->ccb_h.path,
2631                                            /*async_update*/FALSE);
2632                 break;
2633         }
2634         case XPT_SCAN_BUS:
2635         case XPT_SCAN_TGT:
2636                 scsi_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
2637                 break;
2638         case XPT_SCAN_LUN:
2639                 scsi_scan_lun(start_ccb->ccb_h.path->periph,
2640                               start_ccb->ccb_h.path, start_ccb->crcn.flags,
2641                               start_ccb);
2642                 break;
2643         case XPT_DEV_ADVINFO:
2644         {
2645                 scsi_dev_advinfo(start_ccb);
2646                 break;
2647         }
2648         default:
2649                 xpt_action_default(start_ccb);
2650                 break;
2651         }
2652 }
2653
2654 static void
2655 scsi_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_path *path,
2656                            int async_update)
2657 {
2658         struct  ccb_pathinq cpi;
2659         struct  ccb_trans_settings cur_cts;
2660         struct  ccb_trans_settings_scsi *scsi;
2661         struct  ccb_trans_settings_scsi *cur_scsi;
2662         struct  scsi_inquiry_data *inq_data;
2663         struct  cam_ed *device;
2664
2665         if (path == NULL || (device = path->device) == NULL) {
2666                 cts->ccb_h.status = CAM_PATH_INVALID;
2667                 xpt_done((union ccb *)cts);
2668                 return;
2669         }
2670
2671         if (cts->protocol == PROTO_UNKNOWN
2672          || cts->protocol == PROTO_UNSPECIFIED) {
2673                 cts->protocol = device->protocol;
2674                 cts->protocol_version = device->protocol_version;
2675         }
2676
2677         if (cts->protocol_version == PROTO_VERSION_UNKNOWN
2678          || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
2679                 cts->protocol_version = device->protocol_version;
2680
2681         if (cts->protocol != device->protocol) {
2682                 xpt_print(path, "Uninitialized Protocol %x:%x?\n",
2683                        cts->protocol, device->protocol);
2684                 cts->protocol = device->protocol;
2685         }
2686
2687         if (cts->protocol_version > device->protocol_version) {
2688                 if (bootverbose) {
2689                         xpt_print(path, "Down reving Protocol "
2690                             "Version from %d to %d?\n", cts->protocol_version,
2691                             device->protocol_version);
2692                 }
2693                 cts->protocol_version = device->protocol_version;
2694         }
2695
2696         if (cts->transport == XPORT_UNKNOWN
2697          || cts->transport == XPORT_UNSPECIFIED) {
2698                 cts->transport = device->transport;
2699                 cts->transport_version = device->transport_version;
2700         }
2701
2702         if (cts->transport_version == XPORT_VERSION_UNKNOWN
2703          || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
2704                 cts->transport_version = device->transport_version;
2705
2706         if (cts->transport != device->transport) {
2707                 xpt_print(path, "Uninitialized Transport %x:%x?\n",
2708                     cts->transport, device->transport);
2709                 cts->transport = device->transport;
2710         }
2711
2712         if (cts->transport_version > device->transport_version) {
2713                 if (bootverbose) {
2714                         xpt_print(path, "Down reving Transport "
2715                             "Version from %d to %d?\n", cts->transport_version,
2716                             device->transport_version);
2717                 }
2718                 cts->transport_version = device->transport_version;
2719         }
2720
2721         /*
2722          * Nothing more of interest to do unless
2723          * this is a device connected via the
2724          * SCSI protocol.
2725          */
2726         if (cts->protocol != PROTO_SCSI) {
2727                 if (async_update == FALSE)
2728                         xpt_action_default((union ccb *)cts);
2729                 return;
2730         }
2731
2732         inq_data = &device->inq_data;
2733         scsi = &cts->proto_specific.scsi;
2734         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2735         cpi.ccb_h.func_code = XPT_PATH_INQ;
2736         xpt_action((union ccb *)&cpi);
2737
2738         /* SCSI specific sanity checking */
2739         if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
2740          || (INQ_DATA_TQ_ENABLED(inq_data)) == 0
2741          || (device->queue_flags & SCP_QUEUE_DQUE) != 0
2742          || (device->mintags == 0)) {
2743                 /*
2744                  * Can't tag on hardware that doesn't support tags,
2745                  * doesn't have it enabled, or has broken tag support.
2746                  */
2747                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2748         }
2749
2750         if (async_update == FALSE) {
2751                 /*
2752                  * Perform sanity checking against what the
2753                  * controller and device can do.
2754                  */
2755                 xpt_setup_ccb(&cur_cts.ccb_h, path, CAM_PRIORITY_NONE);
2756                 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
2757                 cur_cts.type = cts->type;
2758                 xpt_action((union ccb *)&cur_cts);
2759                 if (cam_ccb_status((union ccb *)&cur_cts) != CAM_REQ_CMP) {
2760                         return;
2761                 }
2762                 cur_scsi = &cur_cts.proto_specific.scsi;
2763                 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
2764                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2765                         scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
2766                 }
2767                 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
2768                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2769         }
2770
2771         /* SPI specific sanity checking */
2772         if (cts->transport == XPORT_SPI && async_update == FALSE) {
2773                 u_int spi3caps;
2774                 struct ccb_trans_settings_spi *spi;
2775                 struct ccb_trans_settings_spi *cur_spi;
2776
2777                 spi = &cts->xport_specific.spi;
2778
2779                 cur_spi = &cur_cts.xport_specific.spi;
2780
2781                 /* Fill in any gaps in what the user gave us */
2782                 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
2783                         spi->sync_period = cur_spi->sync_period;
2784                 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
2785                         spi->sync_period = 0;
2786                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
2787                         spi->sync_offset = cur_spi->sync_offset;
2788                 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
2789                         spi->sync_offset = 0;
2790                 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
2791                         spi->ppr_options = cur_spi->ppr_options;
2792                 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
2793                         spi->ppr_options = 0;
2794                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
2795                         spi->bus_width = cur_spi->bus_width;
2796                 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
2797                         spi->bus_width = 0;
2798                 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
2799                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
2800                         spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
2801                 }
2802                 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
2803                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
2804                 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
2805                   && (inq_data->flags & SID_Sync) == 0
2806                   && cts->type == CTS_TYPE_CURRENT_SETTINGS)
2807                  || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)) {
2808                         /* Force async */
2809                         spi->sync_period = 0;
2810                         spi->sync_offset = 0;
2811                 }
2812
2813                 switch (spi->bus_width) {
2814                 case MSG_EXT_WDTR_BUS_32_BIT:
2815                         if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
2816                           || (inq_data->flags & SID_WBus32) != 0
2817                           || cts->type == CTS_TYPE_USER_SETTINGS)
2818                          && (cpi.hba_inquiry & PI_WIDE_32) != 0)
2819                                 break;
2820                         /* Fall Through to 16-bit */
2821                 case MSG_EXT_WDTR_BUS_16_BIT:
2822                         if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
2823                           || (inq_data->flags & SID_WBus16) != 0
2824                           || cts->type == CTS_TYPE_USER_SETTINGS)
2825                          && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
2826                                 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2827                                 break;
2828                         }
2829                         /* Fall Through to 8-bit */
2830                 default: /* New bus width?? */
2831                 case MSG_EXT_WDTR_BUS_8_BIT:
2832                         /* All targets can do this */
2833                         spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2834                         break;
2835                 }
2836
2837                 spi3caps = cpi.xport_specific.spi.ppr_options;
2838                 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
2839                  && cts->type == CTS_TYPE_CURRENT_SETTINGS)
2840                         spi3caps &= inq_data->spi3data;
2841
2842                 if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
2843                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
2844
2845                 if ((spi3caps & SID_SPI_IUS) == 0)
2846                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2847
2848                 if ((spi3caps & SID_SPI_QAS) == 0)
2849                         spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
2850
2851                 /* No SPI Transfer settings are allowed unless we are wide */
2852                 if (spi->bus_width == 0)
2853                         spi->ppr_options = 0;
2854
2855                 if ((spi->valid & CTS_SPI_VALID_DISC)
2856                  && ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0)) {
2857                         /*
2858                          * Can't tag queue without disconnection.
2859                          */
2860                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2861                         scsi->valid |= CTS_SCSI_VALID_TQ;
2862                 }
2863
2864                 /*
2865                  * If we are currently performing tagged transactions to
2866                  * this device and want to change its negotiation parameters,
2867                  * go non-tagged for a bit to give the controller a chance to
2868                  * negotiate unhampered by tag messages.
2869                  */
2870                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
2871                  && (device->inq_flags & SID_CmdQue) != 0
2872                  && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
2873                  && (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
2874                                    CTS_SPI_VALID_SYNC_OFFSET|
2875                                    CTS_SPI_VALID_BUS_WIDTH)) != 0)
2876                         scsi_toggle_tags(path);
2877         }
2878
2879         if (cts->type == CTS_TYPE_CURRENT_SETTINGS
2880          && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
2881                 int device_tagenb;
2882
2883                 /*
2884                  * If we are transitioning from tags to no-tags or
2885                  * vice-versa, we need to carefully freeze and restart
2886                  * the queue so that we don't overlap tagged and non-tagged
2887                  * commands.  We also temporarily stop tags if there is
2888                  * a change in transfer negotiation settings to allow
2889                  * "tag-less" negotiation.
2890                  */
2891                 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
2892                  || (device->inq_flags & SID_CmdQue) != 0)
2893                         device_tagenb = TRUE;
2894                 else
2895                         device_tagenb = FALSE;
2896
2897                 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
2898                   && device_tagenb == FALSE)
2899                  || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
2900                   && device_tagenb == TRUE)) {
2901
2902                         if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
2903                                 /*
2904                                  * Delay change to use tags until after a
2905                                  * few commands have gone to this device so
2906                                  * the controller has time to perform transfer
2907                                  * negotiations without tagged messages getting
2908                                  * in the way.
2909                                  */
2910                                 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
2911                                 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
2912                         } else {
2913                                 xpt_stop_tags(path);
2914                         }
2915                 }
2916         }
2917         if (async_update == FALSE)
2918                 xpt_action_default((union ccb *)cts);
2919 }
2920
2921 static void
2922 scsi_toggle_tags(struct cam_path *path)
2923 {
2924         struct cam_ed *dev;
2925
2926         /*
2927          * Give controllers a chance to renegotiate
2928          * before starting tag operations.  We
2929          * "toggle" tagged queuing off then on
2930          * which causes the tag enable command delay
2931          * counter to come into effect.
2932          */
2933         dev = path->device;
2934         if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
2935          || ((dev->inq_flags & SID_CmdQue) != 0
2936           && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
2937                 struct ccb_trans_settings cts;
2938
2939                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
2940                 cts.protocol = PROTO_SCSI;
2941                 cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
2942                 cts.transport = XPORT_UNSPECIFIED;
2943                 cts.transport_version = XPORT_VERSION_UNSPECIFIED;
2944                 cts.proto_specific.scsi.flags = 0;
2945                 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
2946                 scsi_set_transfer_settings(&cts, path,
2947                                           /*async_update*/TRUE);
2948                 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
2949                 scsi_set_transfer_settings(&cts, path,
2950                                           /*async_update*/TRUE);
2951         }
2952 }
2953
2954 /*
2955  * Handle any per-device event notifications that require action by the XPT.
2956  */
2957 static void
2958 scsi_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
2959               struct cam_ed *device, void *async_arg)
2960 {
2961         cam_status status;
2962         struct cam_path newpath;
2963
2964         /*
2965          * We only need to handle events for real devices.
2966          */
2967         if (target->target_id == CAM_TARGET_WILDCARD
2968          || device->lun_id == CAM_LUN_WILDCARD)
2969                 return;
2970
2971         /*
2972          * We need our own path with wildcards expanded to
2973          * handle certain types of events.
2974          */
2975         if ((async_code == AC_SENT_BDR)
2976          || (async_code == AC_BUS_RESET)
2977          || (async_code == AC_INQ_CHANGED))
2978                 status = xpt_compile_path(&newpath, NULL,
2979                                           bus->path_id,
2980                                           target->target_id,
2981                                           device->lun_id);
2982         else
2983                 status = CAM_REQ_CMP_ERR;
2984
2985         if (status == CAM_REQ_CMP) {
2986
2987                 /*
2988                  * Allow transfer negotiation to occur in a
2989                  * tag free environment and after settle delay.
2990                  */
2991                 if (async_code == AC_SENT_BDR
2992                  || async_code == AC_BUS_RESET) {
2993                         cam_freeze_devq(&newpath);
2994                         cam_release_devq(&newpath,
2995                                 RELSIM_RELEASE_AFTER_TIMEOUT,
2996                                 /*reduction*/0,
2997                                 /*timeout*/scsi_delay,
2998                                 /*getcount_only*/0);
2999                         scsi_toggle_tags(&newpath);
3000                 }
3001
3002                 if (async_code == AC_INQ_CHANGED) {
3003                         /*
3004                          * We've sent a start unit command, or
3005                          * something similar to a device that
3006                          * may have caused its inquiry data to
3007                          * change. So we re-scan the device to
3008                          * refresh the inquiry data for it.
3009                          */
3010                         scsi_scan_lun(newpath.periph, &newpath,
3011                                      CAM_EXPECT_INQ_CHANGE, NULL);
3012                 }
3013                 xpt_release_path(&newpath);
3014         } else if (async_code == AC_LOST_DEVICE &&
3015             (device->flags & CAM_DEV_UNCONFIGURED) == 0) {
3016                 device->flags |= CAM_DEV_UNCONFIGURED;
3017                 xpt_release_device(device);
3018         } else if (async_code == AC_TRANSFER_NEG) {
3019                 struct ccb_trans_settings *settings;
3020                 struct cam_path path;
3021
3022                 settings = (struct ccb_trans_settings *)async_arg;
3023                 xpt_compile_path(&path, NULL, bus->path_id, target->target_id,
3024                                  device->lun_id);
3025                 scsi_set_transfer_settings(settings, &path,
3026                                           /*async_update*/TRUE);
3027                 xpt_release_path(&path);
3028         }
3029 }
3030
3031 static void
3032 _scsi_announce_periph(struct cam_periph *periph, u_int *speed, u_int *freq, struct ccb_trans_settings *cts)
3033 {
3034         struct  ccb_pathinq cpi;
3035         struct  cam_path *path = periph->path;
3036
3037         cam_periph_assert(periph, MA_OWNED);
3038
3039         xpt_setup_ccb(&cts->ccb_h, path, CAM_PRIORITY_NORMAL);
3040         cts->ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
3041         cts->type = CTS_TYPE_CURRENT_SETTINGS;
3042         xpt_action((union ccb*)cts);
3043         if (cam_ccb_status((union ccb *)cts) != CAM_REQ_CMP)
3044                 return;
3045
3046         /* Ask the SIM for its base transfer speed */
3047         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL);
3048         cpi.ccb_h.func_code = XPT_PATH_INQ;
3049         xpt_action((union ccb *)&cpi);
3050
3051         /* Report connection speed */
3052         *speed = cpi.base_transfer_speed;
3053         *freq = 0;
3054
3055         if (cts->ccb_h.status == CAM_REQ_CMP && cts->transport == XPORT_SPI) {
3056                 struct  ccb_trans_settings_spi *spi =
3057                     &cts->xport_specific.spi;
3058
3059                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
3060                   && spi->sync_offset != 0) {
3061                         *freq = scsi_calc_syncsrate(spi->sync_period);
3062                         *speed = *freq;
3063                 }
3064                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
3065                         *speed *= (0x01 << spi->bus_width);
3066         }
3067         if (cts->ccb_h.status == CAM_REQ_CMP && cts->transport == XPORT_FC) {
3068                 struct  ccb_trans_settings_fc *fc =
3069                     &cts->xport_specific.fc;
3070
3071                 if (fc->valid & CTS_FC_VALID_SPEED)
3072                         *speed = fc->bitrate;
3073         }
3074         if (cts->ccb_h.status == CAM_REQ_CMP && cts->transport == XPORT_SAS) {
3075                 struct  ccb_trans_settings_sas *sas =
3076                     &cts->xport_specific.sas;
3077
3078                 if (sas->valid & CTS_SAS_VALID_SPEED)
3079                         *speed = sas->bitrate;
3080         }
3081 }
3082
3083 static void
3084 scsi_announce_periph_sbuf(struct cam_periph *periph, struct sbuf *sb)
3085 {
3086         struct  ccb_trans_settings cts;
3087         u_int speed, freq, mb;
3088
3089         _scsi_announce_periph(periph, &speed, &freq, &cts);
3090         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP)
3091                 return;
3092
3093         mb = speed / 1000;
3094         if (mb > 0)
3095                 sbuf_printf(sb, "%s%d: %d.%03dMB/s transfers",
3096                        periph->periph_name, periph->unit_number,
3097                        mb, speed % 1000);
3098         else
3099                 sbuf_printf(sb, "%s%d: %dKB/s transfers", periph->periph_name,
3100                        periph->unit_number, speed);
3101         /* Report additional information about SPI connections */
3102         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
3103                 struct  ccb_trans_settings_spi *spi;
3104
3105                 spi = &cts.xport_specific.spi;
3106                 if (freq != 0) {
3107                         sbuf_printf(sb, " (%d.%03dMHz%s, offset %d", freq / 1000,
3108                                freq % 1000,
3109                                (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
3110                              ? " DT" : "",
3111                                spi->sync_offset);
3112                 }
3113                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
3114                  && spi->bus_width > 0) {
3115                         if (freq != 0) {
3116                                 sbuf_printf(sb, ", ");
3117                         } else {
3118                                 sbuf_printf(sb, " (");
3119                         }
3120                         sbuf_printf(sb, "%dbit)", 8 * (0x01 << spi->bus_width));
3121                 } else if (freq != 0) {
3122                         sbuf_printf(sb, ")");
3123                 }
3124         }
3125         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
3126                 struct  ccb_trans_settings_fc *fc;
3127
3128                 fc = &cts.xport_specific.fc;
3129                 if (fc->valid & CTS_FC_VALID_WWNN)
3130                         sbuf_printf(sb, " WWNN 0x%llx", (long long) fc->wwnn);
3131                 if (fc->valid & CTS_FC_VALID_WWPN)
3132                         sbuf_printf(sb, " WWPN 0x%llx", (long long) fc->wwpn);
3133                 if (fc->valid & CTS_FC_VALID_PORT)
3134                         sbuf_printf(sb, " PortID 0x%x", fc->port);
3135         }
3136         sbuf_printf(sb, "\n");
3137 }
3138
3139 static void
3140 scsi_announce_periph(struct cam_periph *periph)
3141 {
3142         struct  ccb_trans_settings cts;
3143         u_int speed, freq, mb;
3144
3145         _scsi_announce_periph(periph, &speed, &freq, &cts);
3146         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP)
3147                 return;
3148
3149         mb = speed / 1000;
3150         if (mb > 0)
3151                 printf("%s%d: %d.%03dMB/s transfers",
3152                        periph->periph_name, periph->unit_number,
3153                        mb, speed % 1000);
3154         else
3155                 printf("%s%d: %dKB/s transfers", periph->periph_name,
3156                        periph->unit_number, speed);
3157         /* Report additional information about SPI connections */
3158         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
3159                 struct  ccb_trans_settings_spi *spi;
3160
3161                 spi = &cts.xport_specific.spi;
3162                 if (freq != 0) {
3163                         printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
3164                                freq % 1000,
3165                                (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
3166                              ? " DT" : "",
3167                                spi->sync_offset);
3168                 }
3169                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
3170                  && spi->bus_width > 0) {
3171                         if (freq != 0) {
3172                                 printf(", ");
3173                         } else {
3174                                 printf(" (");
3175                         }
3176                         printf("%dbit)", 8 * (0x01 << spi->bus_width));
3177                 } else if (freq != 0) {
3178                         printf(")");
3179                 }
3180         }
3181         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
3182                 struct  ccb_trans_settings_fc *fc;
3183
3184                 fc = &cts.xport_specific.fc;
3185                 if (fc->valid & CTS_FC_VALID_WWNN)
3186                         printf(" WWNN 0x%llx", (long long) fc->wwnn);
3187                 if (fc->valid & CTS_FC_VALID_WWPN)
3188                         printf(" WWPN 0x%llx", (long long) fc->wwpn);
3189                 if (fc->valid & CTS_FC_VALID_PORT)
3190                         printf(" PortID 0x%x", fc->port);
3191         }
3192         printf("\n");
3193 }
3194
3195 static void
3196 scsi_proto_announce_sbuf(struct cam_ed *device, struct sbuf *sb)
3197 {
3198         scsi_print_inquiry_sbuf(sb, &device->inq_data);
3199 }
3200
3201 static void
3202 scsi_proto_announce(struct cam_ed *device)
3203 {
3204         scsi_print_inquiry(&device->inq_data);
3205 }
3206
3207 static void
3208 scsi_proto_denounce_sbuf(struct cam_ed *device, struct sbuf *sb)
3209 {
3210         scsi_print_inquiry_short_sbuf(sb, &device->inq_data);
3211 }
3212
3213 static void
3214 scsi_proto_denounce(struct cam_ed *device)
3215 {
3216         scsi_print_inquiry_short(&device->inq_data);
3217 }
3218
3219 static void
3220 scsi_proto_debug_out(union ccb *ccb)
3221 {
3222         char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
3223         struct cam_ed *device;
3224
3225         if (ccb->ccb_h.func_code != XPT_SCSI_IO)
3226                 return;
3227
3228         device = ccb->ccb_h.path->device;
3229         CAM_DEBUG(ccb->ccb_h.path,
3230             CAM_DEBUG_CDB,("%s. CDB: %s\n",
3231                 scsi_op_desc(scsiio_cdb_ptr(&ccb->csio)[0], &device->inq_data),
3232                 scsi_cdb_string(scsiio_cdb_ptr(&ccb->csio), cdb_str, sizeof(cdb_str))));
3233 }