sys/cam/scsi/scsi_xpt.c

   1 /*-
   2  * Implementation of the SCSI Transport
   3  *
   4  * SPDX-License-Identifier: BSD-2-Clause
   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 SYSCTL_INT(_kern_cam, OID_AUTO, cam_srch_hi, CTLFLAG_RWTUN,
  83     &cam_srch_hi, 0, "Search above LUN 7 for SCSI3 and greater devices");
  84
  85 #define CAM_SCSI2_MAXLUN        8
  86 #define CAM_CAN_GET_SIMPLE_LUN(x, i)                            \
  87         ((((x)->luns[i].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==  \
  88         RPL_LUNDATA_ATYP_PERIPH) ||                             \
  89         (((x)->luns[i].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==   \
  90         RPL_LUNDATA_ATYP_FLAT))
  91 #define CAM_GET_SIMPLE_LUN(lp, i, lval)                                 \
  92         if (((lp)->luns[(i)].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==     \
  93             RPL_LUNDATA_ATYP_PERIPH) {                                  \
  94                 (lval) = (lp)->luns[(i)].lundata[1];                    \
  95         } else {                                                        \
  96                 (lval) = (lp)->luns[(i)].lundata[0];                    \
  97                 (lval) &= RPL_LUNDATA_FLAT_LUN_MASK;                    \
  98                 (lval) <<= 8;                                           \
  99                 (lval) |=  (lp)->luns[(i)].lundata[1];                  \
 100         }
 101 #define CAM_GET_LUN(lp, i, lval)                                        \
 102         (lval) = scsi_8btou64((lp)->luns[(i)].lundata);                 \
 103         (lval) = CAM_EXTLUN_BYTE_SWIZZLE(lval);
 104
 105 /*
 106  * If we're not quirked to search <= the first 8 luns
 107  * and we are either quirked to search above lun 8,
 108  * or we're > SCSI-2 and we've enabled hilun searching,
 109  * or we're > SCSI-2 and the last lun was a success,
 110  * we can look for luns above lun 8.
 111  */
 112 #define CAN_SRCH_HI_SPARSE(dv)                                  \
 113   (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0)         \
 114   && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS)               \
 115   || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
 116
 117 #define CAN_SRCH_HI_DENSE(dv)                                   \
 118   (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0)         \
 119   && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS)               \
 120   || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
 121
 122 static periph_init_t probe_periph_init;
 123
 124 static struct periph_driver probe_driver =
 125 {
 126         probe_periph_init, "probe",
 127         TAILQ_HEAD_INITIALIZER(probe_driver.units), /* generation */ 0,
 128         CAM_PERIPH_DRV_EARLY
 129 };
 130
 131 PERIPHDRIVER_DECLARE(probe, probe_driver);
 132
 133 typedef enum {
 134         PROBE_TUR,
 135         PROBE_INQUIRY,  /* this counts as DV0 for Basic Domain Validation */
 136         PROBE_FULL_INQUIRY,
 137         PROBE_REPORT_LUNS,
 138         PROBE_MODE_SENSE,
 139         PROBE_SUPPORTED_VPD_LIST,
 140         PROBE_DEVICE_ID,
 141         PROBE_EXTENDED_INQUIRY,
 142         PROBE_SERIAL_NUM,
 143         PROBE_TUR_FOR_NEGOTIATION,
 144         PROBE_INQUIRY_BASIC_DV1,
 145         PROBE_INQUIRY_BASIC_DV2,
 146         PROBE_DV_EXIT,
 147         PROBE_DONE,
 148         PROBE_INVALID
 149 } probe_action;
 150
 151 static char *probe_action_text[] = {
 152         "PROBE_TUR",
 153         "PROBE_INQUIRY",
 154         "PROBE_FULL_INQUIRY",
 155         "PROBE_REPORT_LUNS",
 156         "PROBE_MODE_SENSE",
 157         "PROBE_SUPPORTED_VPD_LIST",
 158         "PROBE_DEVICE_ID",
 159         "PROBE_EXTENDED_INQUIRY",
 160         "PROBE_SERIAL_NUM",
 161         "PROBE_TUR_FOR_NEGOTIATION",
 162         "PROBE_INQUIRY_BASIC_DV1",
 163         "PROBE_INQUIRY_BASIC_DV2",
 164         "PROBE_DV_EXIT",
 165         "PROBE_DONE",
 166         "PROBE_INVALID"
 167 };
 168
 169 #define PROBE_SET_ACTION(softc, newaction)      \
 170 do {                                                                    \
 171         char **text;                                                    \
 172         text = probe_action_text;                                       \
 173         CAM_DEBUG((softc)->periph->path, CAM_DEBUG_PROBE,               \
 174             ("Probe %s to %s\n", text[(softc)->action],                 \
 175             text[(newaction)]));                                        \
 176         (softc)->action = (newaction);                                  \
 177 } while(0)
 178
 179 typedef enum {
 180         PROBE_INQUIRY_CKSUM     = 0x01,
 181         PROBE_NO_ANNOUNCE       = 0x04,
 182         PROBE_EXTLUN            = 0x08
 183 } probe_flags;
 184
 185 typedef struct {
 186         TAILQ_HEAD(, ccb_hdr) request_ccbs;
 187         probe_action    action;
 188         probe_flags     flags;
 189         MD5_CTX         context;
 190         u_int8_t        digest[16];
 191         struct cam_periph *periph;
 192 } probe_softc;
 193
 194 static const char quantum[] = "QUANTUM";
 195 static const char sony[] = "SONY";
 196 static const char west_digital[] = "WDIGTL";
 197 static const char samsung[] = "SAMSUNG";
 198 static const char seagate[] = "SEAGATE";
 199 static const char microp[] = "MICROP";
 200
 201 static struct scsi_quirk_entry scsi_quirk_table[] =
 202 {
 203         {
 204                 /* Reports QUEUE FULL for temporary resource shortages */
 205                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
 206                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 207         },
 208         {
 209                 /* Reports QUEUE FULL for temporary resource shortages */
 210                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
 211                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 212         },
 213         {
 214                 /* Reports QUEUE FULL for temporary resource shortages */
 215                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
 216                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 217         },
 218         {
 219                 /* Broken tagged queuing drive */
 220                 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
 221                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 222         },
 223         {
 224                 /* Broken tagged queuing drive */
 225                 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
 226                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 227         },
 228         {
 229                 /* Broken tagged queuing drive */
 230                 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
 231                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 232         },
 233         {
 234                 /*
 235                  * Unfortunately, the Quantum Atlas III has the same
 236                  * problem as the Atlas II drives above.
 237                  * Reported by: "Johan Granlund" <johan@granlund.nu>
 238                  *
 239                  * For future reference, the drive with the problem was:
 240                  * QUANTUM QM39100TD-SW N1B0
 241                  *
 242                  * It's possible that Quantum will fix the problem in later
 243                  * firmware revisions.  If that happens, the quirk entry
 244                  * will need to be made specific to the firmware revisions
 245                  * with the problem.
 246                  *
 247                  */
 248                 /* Reports QUEUE FULL for temporary resource shortages */
 249                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
 250                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 251         },
 252         {
 253                 /*
 254                  * 18 Gig Atlas III, same problem as the 9G version.
 255                  * Reported by: Andre Albsmeier
 256                  *              <andre.albsmeier@mchp.siemens.de>
 257                  *
 258                  * For future reference, the drive with the problem was:
 259                  * QUANTUM QM318000TD-S N491
 260                  */
 261                 /* Reports QUEUE FULL for temporary resource shortages */
 262                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
 263                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 264         },
 265         {
 266                 /*
 267                  * Broken tagged queuing drive
 268                  * Reported by: Bret Ford <bford@uop.cs.uop.edu>
 269                  *         and: Martin Renters <martin@tdc.on.ca>
 270                  */
 271                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
 272                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 273         },
 274                 /*
 275                  * The Seagate Medalist Pro drives have very poor write
 276                  * performance with anything more than 2 tags.
 277                  *
 278                  * Reported by:  Paul van der Zwan <paulz@trantor.xs4all.nl>
 279                  * Drive:  <SEAGATE ST36530N 1444>
 280                  *
 281                  * Reported by:  Jeremy Lea <reg@shale.csir.co.za>
 282                  * Drive:  <SEAGATE ST34520W 1281>
 283                  *
 284                  * No one has actually reported that the 9G version
 285                  * (ST39140*) of the Medalist Pro has the same problem, but
 286                  * we're assuming that it does because the 4G and 6.5G
 287                  * versions of the drive are broken.
 288                  */
 289         {
 290                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
 291                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 292         },
 293         {
 294                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
 295                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 296         },
 297         {
 298                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
 299                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 300         },
 301         {
 302                 /*
 303                  * Experiences command timeouts under load with a
 304                  * tag count higher than 55.
 305                  */
 306                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST3146855LW", "*"},
 307                 /*quirks*/0, /*mintags*/2, /*maxtags*/55
 308         },
 309         {
 310                 /*
 311                  * Slow when tagged queueing is enabled.  Write performance
 312                  * steadily drops off with more and more concurrent
 313                  * transactions.  Best sequential write performance with
 314                  * tagged queueing turned off and write caching turned on.
 315                  *
 316                  * PR:  kern/10398
 317                  * Submitted by:  Hideaki Okada <hokada@isl.melco.co.jp>
 318                  * Drive:  DCAS-34330 w/ "S65A" firmware.
 319                  *
 320                  * The drive with the problem had the "S65A" firmware
 321                  * revision, and has also been reported (by Stephen J.
 322                  * Roznowski <sjr@home.net>) for a drive with the "S61A"
 323                  * firmware revision.
 324                  *
 325                  * Although no one has reported problems with the 2 gig
 326                  * version of the DCAS drive, the assumption is that it
 327                  * has the same problems as the 4 gig version.  Therefore
 328                  * this quirk entries disables tagged queueing for all
 329                  * DCAS drives.
 330                  */
 331                 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
 332                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 333         },
 334         {
 335                 /* Broken tagged queuing drive */
 336                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
 337                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 338         },
 339         {
 340                 /* Broken tagged queuing drive */
 341                 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
 342                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 343         },
 344         {
 345                 /* This does not support other than LUN 0 */
 346                 { T_DIRECT, SIP_MEDIA_FIXED, "VMware*", "*", "*" },
 347                 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
 348         },
 349         {
 350                 /*
 351                  * Broken tagged queuing drive.
 352                  * Submitted by:
 353                  * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
 354                  * in PR kern/9535
 355                  */
 356                 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
 357                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 358         },
 359         {
 360                 /*
 361                  * Slow when tagged queueing is enabled. (1.5MB/sec versus
 362                  * 8MB/sec.)
 363                  * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
 364                  * Best performance with these drives is achieved with
 365                  * tagged queueing turned off, and write caching turned on.
 366                  */
 367                 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
 368                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 369         },
 370         {
 371                 /*
 372                  * Slow when tagged queueing is enabled. (1.5MB/sec versus
 373                  * 8MB/sec.)
 374                  * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
 375                  * Best performance with these drives is achieved with
 376                  * tagged queueing turned off, and write caching turned on.
 377                  */
 378                 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
 379                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 380         },
 381         {
 382                 /*
 383                  * Doesn't handle queue full condition correctly,
 384                  * so we need to limit maxtags to what the device
 385                  * can handle instead of determining this automatically.
 386                  */
 387                 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
 388                 /*quirks*/0, /*mintags*/2, /*maxtags*/32
 389         },
 390         {
 391                 /* Really only one LUN */
 392                 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
 393                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 394         },
 395         {
 396                 /* I can't believe we need a quirk for DPT volumes. */
 397                 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
 398                 CAM_QUIRK_NOLUNS,
 399                 /*mintags*/0, /*maxtags*/255
 400         },
 401         {
 402                 /*
 403                  * Many Sony CDROM drives don't like multi-LUN probing.
 404                  */
 405                 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
 406                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 407         },
 408         {
 409                 /*
 410                  * This drive doesn't like multiple LUN probing.
 411                  * Submitted by:  Parag Patel <parag@cgt.com>
 412                  */
 413                 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R   CDU9*", "*" },
 414                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 415         },
 416         {
 417                 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
 418                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 419         },
 420         {
 421                 /*
 422                  * The 8200 doesn't like multi-lun probing, and probably
 423                  * don't like serial number requests either.
 424                  */
 425                 {
 426                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
 427                         "EXB-8200*", "*"
 428                 },
 429                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 430         },
 431         {
 432                 /*
 433                  * Let's try the same as above, but for a drive that says
 434                  * it's an IPL-6860 but is actually an EXB 8200.
 435                  */
 436                 {
 437                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
 438                         "IPL-6860*", "*"
 439                 },
 440                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 441         },
 442         {
 443                 /*
 444                  * These Hitachi drives don't like multi-lun probing.
 445                  * The PR submitter has a DK319H, but says that the Linux
 446                  * kernel has a similar work-around for the DK312 and DK314,
 447                  * so all DK31* drives are quirked here.
 448                  * PR:            misc/18793
 449                  * Submitted by:  Paul Haddad <paul@pth.com>
 450                  */
 451                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
 452                 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
 453         },
 454         {
 455                 /*
 456                  * The Hitachi CJ series with J8A8 firmware apparently has
 457                  * problems with tagged commands.
 458                  * PR: 23536
 459                  * Reported by: amagai@nue.org
 460                  */
 461                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
 462                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 463         },
 464         {
 465                 /*
 466                  * These are the large storage arrays.
 467                  * Submitted by:  William Carrel <william.carrel@infospace.com>
 468                  */
 469                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
 470                 CAM_QUIRK_HILUNS, 2, 1024
 471         },
 472         {
 473                 /*
 474                  * This old revision of the TDC3600 is also SCSI-1, and
 475                  * hangs upon serial number probing.
 476                  */
 477                 {
 478                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
 479                         " TDC 3600", "U07:"
 480                 },
 481                 CAM_QUIRK_NOVPDS, /*mintags*/0, /*maxtags*/0
 482         },
 483         {
 484                 /*
 485                  * Would repond to all LUNs if asked for.
 486                  */
 487                 {
 488                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
 489                         "CP150", "*"
 490                 },
 491                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 492         },
 493         {
 494                 /*
 495                  * Would repond to all LUNs if asked for.
 496                  */
 497                 {
 498                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
 499                         "96X2*", "*"
 500                 },
 501                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 502         },
 503         {
 504                 /* Submitted by: Matthew Dodd <winter@jurai.net> */
 505                 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
 506                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 507         },
 508         {
 509                 /* Submitted by: Matthew Dodd <winter@jurai.net> */
 510                 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
 511                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 512         },
 513         {
 514                 /* TeraSolutions special settings for TRC-22 RAID */
 515                 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
 516                   /*quirks*/0, /*mintags*/55, /*maxtags*/255
 517         },
 518         {
 519                 /* Veritas Storage Appliance */
 520                 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
 521                   CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
 522         },
 523         {
 524                 /*
 525                  * Would respond to all LUNs.  Device type and removable
 526                  * flag are jumper-selectable.
 527                  */
 528                 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
 529                   "Tahiti 1", "*"
 530                 },
 531                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 532         },
 533         {
 534                 /* EasyRAID E5A aka. areca ARC-6010 */
 535                 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
 536                   CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
 537         },
 538         {
 539                 { T_ENCLOSURE, SIP_MEDIA_FIXED, "DP", "BACKPLANE", "*" },
 540                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 541         },
 542         {
 543                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "Garmin", "*", "*" },
 544                 CAM_QUIRK_NORPTLUNS, /*mintags*/2, /*maxtags*/255
 545         },
 546         {
 547                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic", "STORAGE DEVICE*", "120?" },
 548                 CAM_QUIRK_NORPTLUNS, /*mintags*/2, /*maxtags*/255
 549         },
 550         {
 551                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic", "MassStorageClass", "1533" },
 552                 CAM_QUIRK_NORPTLUNS, /*mintags*/2, /*maxtags*/255
 553         },
 554         {
 555                 /* Default tagged queuing parameters for all devices */
 556                 {
 557                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 558                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 559                 },
 560                 /*quirks*/0, /*mintags*/2, /*maxtags*/255
 561         },
 562 };
 563
 564 static cam_status       proberegister(struct cam_periph *periph,
 565                                       void *arg);
 566 static void      probeschedule(struct cam_periph *probe_periph);
 567 static void      probestart(struct cam_periph *periph, union ccb *start_ccb);
 568 static void      proberequestdefaultnegotiation(struct cam_periph *periph);
 569 static int       proberequestbackoff(struct cam_periph *periph,
 570                                      struct cam_ed *device);
 571 static void      probedone(struct cam_periph *periph, union ccb *done_ccb);
 572 static void      probe_purge_old(struct cam_path *path,
 573                                  struct scsi_report_luns_data *new,
 574                                  probe_flags flags);
 575 static void      probecleanup(struct cam_periph *periph);
 576 static void      scsi_find_quirk(struct cam_ed *device);
 577 static void      scsi_scan_bus(struct cam_periph *periph, union ccb *ccb);
 578 static void      scsi_scan_lun(struct cam_periph *periph,
 579                                struct cam_path *path, cam_flags flags,
 580                                union ccb *ccb);
 581 static void      xptscandone(struct cam_periph *periph, union ccb *done_ccb);
 582 static struct cam_ed *
 583                  scsi_alloc_device(struct cam_eb *bus, struct cam_et *target,
 584                                    lun_id_t lun_id);
 585 static void      scsi_devise_transport(struct cam_path *path);
 586 static void      scsi_set_transfer_settings(struct ccb_trans_settings *cts,
 587                                             struct cam_path *path,
 588                                             int async_update);
 589 static void      scsi_toggle_tags(struct cam_path *path);
 590 static void      scsi_dev_async(u_int32_t async_code,
 591                                 struct cam_eb *bus,
 592                                 struct cam_et *target,
 593                                 struct cam_ed *device,
 594                                 void *async_arg);
 595 static void      scsi_action(union ccb *start_ccb);
 596 static void      scsi_announce_periph(struct cam_periph *periph);
 597 static void      scsi_announce_periph_sbuf(struct cam_periph *periph, struct sbuf *sb);
 598 static void      scsi_proto_announce(struct cam_ed *device);
 599 static void      scsi_proto_announce_sbuf(struct cam_ed *device,
 600                                           struct sbuf *sb);
 601 static void      scsi_proto_denounce(struct cam_ed *device);
 602 static void      scsi_proto_denounce_sbuf(struct cam_ed *device,
 603                                           struct sbuf *sb);
 604 static void      scsi_proto_debug_out(union ccb *ccb);
 605 static void      _scsi_announce_periph(struct cam_periph *, u_int *, u_int *, struct ccb_trans_settings *);
 606
 607 static struct xpt_xport_ops scsi_xport_ops = {
 608         .alloc_device = scsi_alloc_device,
 609         .action = scsi_action,
 610         .async = scsi_dev_async,
 611         .announce = scsi_announce_periph,
 612         .announce_sbuf = scsi_announce_periph_sbuf,
 613 };
 614 #define SCSI_XPT_XPORT(x, X)                    \
 615 static struct xpt_xport scsi_xport_ ## x = {    \
 616         .xport = XPORT_ ## X,                   \
 617         .name = #x,                             \
 618         .ops = &scsi_xport_ops,                 \
 619 };                                              \
 620 CAM_XPT_XPORT(scsi_xport_ ## x);
 621
 622 SCSI_XPT_XPORT(spi, SPI);
 623 SCSI_XPT_XPORT(sas, SAS);
 624 SCSI_XPT_XPORT(fc, FC);
 625 SCSI_XPT_XPORT(usb, USB);
 626 SCSI_XPT_XPORT(iscsi, ISCSI);
 627 SCSI_XPT_XPORT(srp, SRP);
 628 SCSI_XPT_XPORT(ppb, PPB);
 629
 630 #undef SCSI_XPORT_XPORT
 631
 632 static struct xpt_proto_ops scsi_proto_ops = {
 633         .announce = scsi_proto_announce,
 634         .announce_sbuf = scsi_proto_announce_sbuf,
 635         .denounce = scsi_proto_denounce,
 636         .denounce_sbuf = scsi_proto_denounce_sbuf,
 637         .debug_out = scsi_proto_debug_out,
 638 };
 639 static struct xpt_proto scsi_proto = {
 640         .proto = PROTO_SCSI,
 641         .name = "scsi",
 642         .ops = &scsi_proto_ops,
 643 };
 644 CAM_XPT_PROTO(scsi_proto);
 645
 646 static void
 647 probe_periph_init(void)
 648 {
 649 }
 650
 651 static cam_status
 652 proberegister(struct cam_periph *periph, void *arg)
 653 {
 654         union ccb *request_ccb; /* CCB representing the probe request */
 655         probe_softc *softc;
 656
 657         request_ccb = (union ccb *)arg;
 658         if (request_ccb == NULL) {
 659                 printf("proberegister: no probe CCB, "
 660                        "can't register device\n");
 661                 return(CAM_REQ_CMP_ERR);
 662         }
 663
 664         softc = (probe_softc *)malloc(sizeof(*softc), M_CAMXPT, M_NOWAIT);
 665
 666         if (softc == NULL) {
 667                 printf("proberegister: Unable to probe new device. "
 668                        "Unable to allocate softc\n");
 669                 return(CAM_REQ_CMP_ERR);
 670         }
 671         TAILQ_INIT(&softc->request_ccbs);
 672         TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
 673                           periph_links.tqe);
 674         softc->flags = 0;
 675         periph->softc = softc;
 676         softc->periph = periph;
 677         softc->action = PROBE_INVALID;
 678         if (cam_periph_acquire(periph) != 0)
 679                 return (CAM_REQ_CMP_ERR);
 680
 681         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe started\n"));
 682         scsi_devise_transport(periph->path);
 683
 684         /*
 685          * Ensure we've waited at least a bus settle
 686          * delay before attempting to probe the device.
 687          * For HBAs that don't do bus resets, this won't make a difference.
 688          */
 689         cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
 690                                       scsi_delay);
 691         probeschedule(periph);
 692         return(CAM_REQ_CMP);
 693 }
 694
 695 static void
 696 probeschedule(struct cam_periph *periph)
 697 {
 698         struct ccb_pathinq cpi;
 699         union ccb *ccb;
 700         probe_softc *softc;
 701
 702         softc = (probe_softc *)periph->softc;
 703         ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
 704
 705         xpt_path_inq(&cpi, periph->path);
 706
 707         /*
 708          * If a device has gone away and another device, or the same one,
 709          * is back in the same place, it should have a unit attention
 710          * condition pending.  It will not report the unit attention in
 711          * response to an inquiry, which may leave invalid transfer
 712          * negotiations in effect.  The TUR will reveal the unit attention
 713          * condition.  Only send the TUR for lun 0, since some devices
 714          * will get confused by commands other than inquiry to non-existent
 715          * luns.  If you think a device has gone away start your scan from
 716          * lun 0.  This will insure that any bogus transfer settings are
 717          * invalidated.
 718          *
 719          * If we haven't seen the device before and the controller supports
 720          * some kind of transfer negotiation, negotiate with the first
 721          * sent command if no bus reset was performed at startup.  This
 722          * ensures that the device is not confused by transfer negotiation
 723          * settings left over by loader or BIOS action.
 724          */
 725         if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 726          && (ccb->ccb_h.target_lun == 0)) {
 727                 PROBE_SET_ACTION(softc, PROBE_TUR);
 728         } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
 729               && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
 730                 proberequestdefaultnegotiation(periph);
 731                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
 732         } else {
 733                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
 734         }
 735
 736         if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
 737                 softc->flags |= PROBE_NO_ANNOUNCE;
 738         else
 739                 softc->flags &= ~PROBE_NO_ANNOUNCE;
 740
 741         if (cpi.hba_misc & PIM_EXTLUNS)
 742                 softc->flags |= PROBE_EXTLUN;
 743         else
 744                 softc->flags &= ~PROBE_EXTLUN;
 745
 746         xpt_schedule(periph, CAM_PRIORITY_XPT);
 747 }
 748
 749 static void
 750 probestart(struct cam_periph *periph, union ccb *start_ccb)
 751 {
 752         /* Probe the device that our peripheral driver points to */
 753         struct ccb_scsiio *csio;
 754         probe_softc *softc;
 755
 756         CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
 757
 758         softc = (probe_softc *)periph->softc;
 759         csio = &start_ccb->csio;
 760 again:
 761
 762         switch (softc->action) {
 763         case PROBE_TUR:
 764         case PROBE_TUR_FOR_NEGOTIATION:
 765         case PROBE_DV_EXIT:
 766         {
 767                 scsi_test_unit_ready(csio,
 768                                      /*retries*/4,
 769                                      probedone,
 770                                      MSG_SIMPLE_Q_TAG,
 771                                      SSD_FULL_SIZE,
 772                                      /*timeout*/60000);
 773                 break;
 774         }
 775         case PROBE_INQUIRY:
 776         case PROBE_FULL_INQUIRY:
 777         {
 778                 u_int inquiry_len;
 779                 struct scsi_inquiry_data *inq_buf;
 780
 781                 inq_buf = &periph->path->device->inq_data;
 782
 783                 /*
 784                  * If the device is currently configured, we calculate an
 785                  * MD5 checksum of the inquiry data, and if the serial number
 786                  * length is greater than 0, add the serial number data
 787                  * into the checksum as well.  Once the inquiry and the
 788                  * serial number check finish, we attempt to figure out
 789                  * whether we still have the same device.
 790                  */
 791                 if (periph->path->device->flags & CAM_DEV_UNCONFIGURED) {
 792                         softc->flags &= ~PROBE_INQUIRY_CKSUM;
 793                 } else if ((softc->flags & PROBE_INQUIRY_CKSUM) == 0) {
 794                         MD5Init(&softc->context);
 795                         MD5Update(&softc->context, (unsigned char *)inq_buf,
 796                                   sizeof(struct scsi_inquiry_data));
 797                         if (periph->path->device->serial_num_len > 0) {
 798                                 MD5Update(&softc->context,
 799                                           periph->path->device->serial_num,
 800                                           periph->path->device->serial_num_len);
 801                         }
 802                         MD5Final(softc->digest, &softc->context);
 803                         softc->flags |= PROBE_INQUIRY_CKSUM;
 804                 }
 805
 806                 if (softc->action == PROBE_INQUIRY)
 807                         inquiry_len = SHORT_INQUIRY_LENGTH;
 808                 else
 809                         inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf);
 810
 811                 /*
 812                  * Some parallel SCSI devices fail to send an
 813                  * ignore wide residue message when dealing with
 814                  * odd length inquiry requests.  Round up to be
 815                  * safe.
 816                  */
 817                 inquiry_len = roundup2(inquiry_len, 2);
 818
 819                 scsi_inquiry(csio,
 820                              /*retries*/4,
 821                              probedone,
 822                              MSG_SIMPLE_Q_TAG,
 823                              (u_int8_t *)inq_buf,
 824                              inquiry_len,
 825                              /*evpd*/FALSE,
 826                              /*page_code*/0,
 827                              SSD_MIN_SIZE,
 828                              /*timeout*/60 * 1000);
 829                 break;
 830         }
 831         case PROBE_REPORT_LUNS:
 832         {
 833                 void *rp;
 834
 835                 rp = malloc(periph->path->target->rpl_size,
 836                     M_CAMXPT, M_NOWAIT | M_ZERO);
 837                 if (rp == NULL) {
 838                         struct scsi_inquiry_data *inq_buf;
 839                         inq_buf = &periph->path->device->inq_data;
 840                         xpt_print(periph->path,
 841                             "Unable to alloc report luns storage\n");
 842                         if (INQ_DATA_TQ_ENABLED(inq_buf))
 843                                 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
 844                         else
 845                                 PROBE_SET_ACTION(softc,
 846                                     PROBE_SUPPORTED_VPD_LIST);
 847                         goto again;
 848                 }
 849                 scsi_report_luns(csio, 5, probedone, MSG_SIMPLE_Q_TAG,
 850                     RPL_REPORT_DEFAULT, rp, periph->path->target->rpl_size,
 851                     SSD_FULL_SIZE, 60000); break;
 852                 break;
 853         }
 854         case PROBE_MODE_SENSE:
 855         {
 856                 void  *mode_buf;
 857                 int    mode_buf_len;
 858
 859                 mode_buf_len = sizeof(struct scsi_mode_header_6)
 860                              + sizeof(struct scsi_mode_blk_desc)
 861                              + sizeof(struct scsi_control_page);
 862                 mode_buf = malloc(mode_buf_len, M_CAMXPT, M_NOWAIT);
 863                 if (mode_buf != NULL) {
 864                         scsi_mode_sense(csio,
 865                                         /*retries*/4,
 866                                         probedone,
 867                                         MSG_SIMPLE_Q_TAG,
 868                                         /*dbd*/FALSE,
 869                                         SMS_PAGE_CTRL_CURRENT,
 870                                         SMS_CONTROL_MODE_PAGE,
 871                                         mode_buf,
 872                                         mode_buf_len,
 873                                         SSD_FULL_SIZE,
 874                                         /*timeout*/60000);
 875                         break;
 876                 }
 877                 xpt_print(periph->path, "Unable to mode sense control page - "
 878                     "malloc failure\n");
 879                 PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
 880         }
 881         /* FALLTHROUGH */
 882         case PROBE_SUPPORTED_VPD_LIST:
 883         {
 884                 struct scsi_vpd_supported_page_list *vpd_list;
 885                 struct cam_ed *device;
 886
 887                 vpd_list = NULL;
 888                 device = periph->path->device;
 889
 890                 if ((SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOVPDS) == 0)
 891                         vpd_list = malloc(sizeof(*vpd_list), M_CAMXPT,
 892                             M_NOWAIT | M_ZERO);
 893
 894                 if (vpd_list != NULL) {
 895                         scsi_inquiry(csio,
 896                                      /*retries*/4,
 897                                      probedone,
 898                                      MSG_SIMPLE_Q_TAG,
 899                                      (u_int8_t *)vpd_list,
 900                                      sizeof(*vpd_list),
 901                                      /*evpd*/TRUE,
 902                                      SVPD_SUPPORTED_PAGE_LIST,
 903                                      SSD_MIN_SIZE,
 904                                      /*timeout*/60 * 1000);
 905                         break;
 906                 }
 907 done:
 908                 /*
 909                  * We'll have to do without, let our probedone
 910                  * routine finish up for us.
 911                  */
 912                 start_ccb->csio.data_ptr = NULL;
 913                 cam_freeze_devq(periph->path);
 914                 cam_periph_doacquire(periph);
 915                 probedone(periph, start_ccb);
 916                 return;
 917         }
 918         case PROBE_DEVICE_ID:
 919         {
 920                 struct scsi_vpd_device_id *devid;
 921
 922                 devid = NULL;
 923                 if (scsi_vpd_supported_page(periph, SVPD_DEVICE_ID))
 924                         devid = malloc(SVPD_DEVICE_ID_MAX_SIZE, M_CAMXPT,
 925                             M_NOWAIT | M_ZERO);
 926
 927                 if (devid != NULL) {
 928                         scsi_inquiry(csio,
 929                                      /*retries*/4,
 930                                      probedone,
 931                                      MSG_SIMPLE_Q_TAG,
 932                                      (uint8_t *)devid,
 933                                      SVPD_DEVICE_ID_MAX_SIZE,
 934                                      /*evpd*/TRUE,
 935                                      SVPD_DEVICE_ID,
 936                                      SSD_MIN_SIZE,
 937                                      /*timeout*/60 * 1000);
 938                         break;
 939                 }
 940                 goto done;
 941         }
 942         case PROBE_EXTENDED_INQUIRY:
 943         {
 944                 struct scsi_vpd_extended_inquiry_data *ext_inq;
 945
 946                 ext_inq = NULL;
 947                 if (scsi_vpd_supported_page(periph, SVPD_EXTENDED_INQUIRY_DATA))
 948                         ext_inq = malloc(sizeof(*ext_inq), M_CAMXPT,
 949                             M_NOWAIT | M_ZERO);
 950
 951                 if (ext_inq != NULL) {
 952                         scsi_inquiry(csio,
 953                                      /*retries*/4,
 954                                      probedone,
 955                                      MSG_SIMPLE_Q_TAG,
 956                                      (uint8_t *)ext_inq,
 957                                      sizeof(*ext_inq),
 958                                      /*evpd*/TRUE,
 959                                      SVPD_EXTENDED_INQUIRY_DATA,
 960                                      SSD_MIN_SIZE,
 961                                      /*timeout*/60 * 1000);
 962                         break;
 963                 }
 964                 /*
 965                  * We'll have to do without, let our probedone
 966                  * routine finish up for us.
 967                  */
 968                 goto done;
 969         }
 970         case PROBE_SERIAL_NUM:
 971         {
 972                 struct scsi_vpd_unit_serial_number *serial_buf;
 973                 struct cam_ed* device;
 974
 975                 serial_buf = NULL;
 976                 device = periph->path->device;
 977                 if (device->serial_num != NULL) {
 978                         free(device->serial_num, M_CAMXPT);
 979                         device->serial_num = NULL;
 980                         device->serial_num_len = 0;
 981                 }
 982
 983                 if (scsi_vpd_supported_page(periph, SVPD_UNIT_SERIAL_NUMBER))
 984                         serial_buf = (struct scsi_vpd_unit_serial_number *)
 985                                 malloc(sizeof(*serial_buf), M_CAMXPT,
 986                                     M_NOWAIT|M_ZERO);
 987
 988                 if (serial_buf != NULL) {
 989                         scsi_inquiry(csio,
 990                                      /*retries*/4,
 991                                      probedone,
 992                                      MSG_SIMPLE_Q_TAG,
 993                                      (u_int8_t *)serial_buf,
 994                                      sizeof(*serial_buf),
 995                                      /*evpd*/TRUE,
 996                                      SVPD_UNIT_SERIAL_NUMBER,
 997                                      SSD_MIN_SIZE,
 998                                      /*timeout*/60 * 1000);
 999                         break;
1000                 }
1001                 goto done;
1002         }
1003         case PROBE_INQUIRY_BASIC_DV1:
1004         case PROBE_INQUIRY_BASIC_DV2:
1005         {
1006                 u_int inquiry_len;
1007                 struct scsi_inquiry_data *inq_buf;
1008
1009                 inq_buf = &periph->path->device->inq_data;
1010                 inquiry_len = roundup2(SID_ADDITIONAL_LENGTH(inq_buf), 2);
1011                 inq_buf = malloc(inquiry_len, M_CAMXPT, M_NOWAIT);
1012                 if (inq_buf == NULL) {
1013                         xpt_print(periph->path, "malloc failure- skipping Basic"
1014                             "Domain Validation\n");
1015                         PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
1016                         scsi_test_unit_ready(csio,
1017                                              /*retries*/4,
1018                                              probedone,
1019                                              MSG_SIMPLE_Q_TAG,
1020                                              SSD_FULL_SIZE,
1021                                              /*timeout*/60000);
1022                         break;
1023                 }
1024
1025                 scsi_inquiry(csio,
1026                              /*retries*/4,
1027                              probedone,
1028                              MSG_SIMPLE_Q_TAG,
1029                              (u_int8_t *)inq_buf,
1030                              inquiry_len,
1031                              /*evpd*/FALSE,
1032                              /*page_code*/0,
1033                              SSD_MIN_SIZE,
1034                              /*timeout*/60 * 1000);
1035                 break;
1036         }
1037         default:
1038                 panic("probestart: invalid action state 0x%x\n", softc->action);
1039         }
1040         start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
1041         cam_periph_doacquire(periph);
1042         xpt_action(start_ccb);
1043 }
1044
1045 static void
1046 proberequestdefaultnegotiation(struct cam_periph *periph)
1047 {
1048         struct ccb_trans_settings cts;
1049
1050         memset(&cts, 0, sizeof(cts));
1051         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
1052         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1053         cts.type = CTS_TYPE_USER_SETTINGS;
1054         xpt_action((union ccb *)&cts);
1055         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1056                 return;
1057         }
1058         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1059         cts.type = CTS_TYPE_CURRENT_SETTINGS;
1060         xpt_action((union ccb *)&cts);
1061 }
1062
1063 /*
1064  * Backoff Negotiation Code- only pertinent for SPI devices.
1065  */
1066 static int
1067 proberequestbackoff(struct cam_periph *periph, struct cam_ed *device)
1068 {
1069         struct ccb_trans_settings cts;
1070         struct ccb_trans_settings_spi *spi;
1071
1072         memset(&cts, 0, sizeof (cts));
1073         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
1074         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1075         cts.type = CTS_TYPE_CURRENT_SETTINGS;
1076         xpt_action((union ccb *)&cts);
1077         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1078                 if (bootverbose) {
1079                         xpt_print(periph->path,
1080                             "failed to get current device settings\n");
1081                 }
1082                 return (0);
1083         }
1084         if (cts.transport != XPORT_SPI) {
1085                 if (bootverbose) {
1086                         xpt_print(periph->path, "not SPI transport\n");
1087                 }
1088                 return (0);
1089         }
1090         spi = &cts.xport_specific.spi;
1091
1092         /*
1093          * We cannot renegotiate sync rate if we don't have one.
1094          */
1095         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
1096                 if (bootverbose) {
1097                         xpt_print(periph->path, "no sync rate known\n");
1098                 }
1099                 return (0);
1100         }
1101
1102         /*
1103          * We'll assert that we don't have to touch PPR options- the
1104          * SIM will see what we do with period and offset and adjust
1105          * the PPR options as appropriate.
1106          */
1107
1108         /*
1109          * A sync rate with unknown or zero offset is nonsensical.
1110          * A sync period of zero means Async.
1111          */
1112         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0
1113          || spi->sync_offset == 0 || spi->sync_period == 0) {
1114                 if (bootverbose) {
1115                         xpt_print(periph->path, "no sync rate available\n");
1116                 }
1117                 return (0);
1118         }
1119
1120         if (device->flags & CAM_DEV_DV_HIT_BOTTOM) {
1121                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1122                     ("hit async: giving up on DV\n"));
1123                 return (0);
1124         }
1125
1126         /*
1127          * Jump sync_period up by one, but stop at 5MHz and fall back to Async.
1128          * We don't try to remember 'last' settings to see if the SIM actually
1129          * gets into the speed we want to set. We check on the SIM telling
1130          * us that a requested speed is bad, but otherwise don't try and
1131          * check the speed due to the asynchronous and handshake nature
1132          * of speed setting.
1133          */
1134         spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET;
1135         for (;;) {
1136                 spi->sync_period++;
1137                 if (spi->sync_period >= 0xf) {
1138                         spi->sync_period = 0;
1139                         spi->sync_offset = 0;
1140                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1141                             ("setting to async for DV\n"));
1142                         /*
1143                          * Once we hit async, we don't want to try
1144                          * any more settings.
1145                          */
1146                         device->flags |= CAM_DEV_DV_HIT_BOTTOM;
1147                 } else if (bootverbose) {
1148                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1149                             ("DV: period 0x%x\n", spi->sync_period));
1150                         printf("setting period to 0x%x\n", spi->sync_period);
1151                 }
1152                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1153                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1154                 xpt_action((union ccb *)&cts);
1155                 if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1156                         break;
1157                 }
1158                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1159                     ("DV: failed to set period 0x%x\n", spi->sync_period));
1160                 if (spi->sync_period == 0) {
1161                         return (0);
1162                 }
1163         }
1164         return (1);
1165 }
1166
1167 #define CCB_COMPLETED_OK(ccb) (((ccb).status & CAM_STATUS_MASK) == CAM_REQ_CMP)
1168
1169 static void
1170 probedone(struct cam_periph *periph, union ccb *done_ccb)
1171 {
1172         probe_softc *softc;
1173         struct cam_path *path;
1174         struct scsi_inquiry_data *inq_buf;
1175         u_int32_t  priority;
1176
1177         CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
1178
1179         softc = (probe_softc *)periph->softc;
1180         path = done_ccb->ccb_h.path;
1181         priority = done_ccb->ccb_h.pinfo.priority;
1182         cam_periph_assert(periph, MA_OWNED);
1183
1184         switch (softc->action) {
1185         case PROBE_TUR:
1186         {
1187                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1188                         if (cam_periph_error(done_ccb, 0, SF_NO_PRINT) ==
1189                             ERESTART) {
1190 outr:
1191                                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1192                                 cam_release_devq(path, 0, 0, 0, FALSE);
1193                                 return;
1194                         }
1195                         else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1196                                 /* Don't wedge the queue */
1197                                 xpt_release_devq(done_ccb->ccb_h.path,
1198                                                  /*count*/1,
1199                                                  /*run_queue*/TRUE);
1200                 }
1201                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
1202                 xpt_release_ccb(done_ccb);
1203                 xpt_schedule(periph, priority);
1204 out:
1205                 /* Drop freeze taken due to CAM_DEV_QFREEZE and release. */
1206                 cam_release_devq(path, 0, 0, 0, FALSE);
1207                 cam_periph_release_locked(periph);
1208                 return;
1209         }
1210         case PROBE_INQUIRY:
1211         case PROBE_FULL_INQUIRY:
1212         {
1213                 if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
1214                         u_int8_t periph_qual;
1215
1216                         path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
1217                         scsi_find_quirk(path->device);
1218                         inq_buf = &path->device->inq_data;
1219
1220                         periph_qual = SID_QUAL(inq_buf);
1221
1222                         if (periph_qual == SID_QUAL_LU_CONNECTED ||
1223                             periph_qual == SID_QUAL_LU_OFFLINE) {
1224                                 /*
1225                                  * We conservatively request only
1226                                  * SHORT_INQUIRY_LEN bytes of inquiry
1227                                  * information during our first try
1228                                  * at sending an INQUIRY. If the device
1229                                  * has more information to give,
1230                                  * perform a second request specifying
1231                                  * the amount of information the device
1232                                  * is willing to give.
1233                                  */
1234                                 if (softc->action == PROBE_INQUIRY
1235                                     && SID_ADDITIONAL_LENGTH(inq_buf)
1236                                     > SHORT_INQUIRY_LENGTH) {
1237                                         PROBE_SET_ACTION(softc, PROBE_FULL_INQUIRY);
1238                                         xpt_release_ccb(done_ccb);
1239                                         xpt_schedule(periph, priority);
1240                                         goto out;
1241                                 }
1242
1243                                 scsi_devise_transport(path);
1244
1245                                 if (path->device->lun_id == 0 &&
1246                                     SID_ANSI_REV(inq_buf) > SCSI_REV_SPC2 &&
1247                                     (SCSI_QUIRK(path->device)->quirks &
1248                                      CAM_QUIRK_NORPTLUNS) == 0) {
1249                                         PROBE_SET_ACTION(softc,
1250                                             PROBE_REPORT_LUNS);
1251                                         /*
1252                                          * Start with room for *one* lun.
1253                                          */
1254                                         periph->path->target->rpl_size = 16;
1255                                 } else if (INQ_DATA_TQ_ENABLED(inq_buf))
1256                                         PROBE_SET_ACTION(softc,
1257                                             PROBE_MODE_SENSE);
1258                                 else
1259                                         PROBE_SET_ACTION(softc,
1260                                             PROBE_SUPPORTED_VPD_LIST);
1261
1262                                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1263                                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1264                                         xpt_acquire_device(path->device);
1265                                 }
1266                                 xpt_release_ccb(done_ccb);
1267                                 xpt_schedule(periph, priority);
1268                                 goto out;
1269                         } else if (path->device->lun_id == 0 &&
1270                             SID_ANSI_REV(inq_buf) >= SCSI_REV_SPC2 &&
1271                             (SCSI_QUIRK(path->device)->quirks &
1272                              CAM_QUIRK_NORPTLUNS) == 0) {
1273                                 PROBE_SET_ACTION(softc, PROBE_REPORT_LUNS);
1274                                 periph->path->target->rpl_size = 16;
1275                                 xpt_release_ccb(done_ccb);
1276                                 xpt_schedule(periph, priority);
1277                                 goto out;
1278                         }
1279                 } else if (cam_periph_error(done_ccb, 0,
1280                                             done_ccb->ccb_h.target_lun > 0
1281                                             ? SF_RETRY_UA|SF_QUIET_IR
1282                                             : SF_RETRY_UA) == ERESTART) {
1283                         goto outr;
1284                 } else {
1285                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1286                                 /* Don't wedge the queue */
1287                                 xpt_release_devq(done_ccb->ccb_h.path,
1288                                     /*count*/1, /*run_queue*/TRUE);
1289                         }
1290                         path->device->flags &= ~CAM_DEV_INQUIRY_DATA_VALID;
1291                 }
1292                 /*
1293                  * If we get to this point, we got an error status back
1294                  * from the inquiry and the error status doesn't require
1295                  * automatically retrying the command.  Therefore, the
1296                  * inquiry failed.  If we had inquiry information before
1297                  * for this device, but this latest inquiry command failed,
1298                  * the device has probably gone away.  If this device isn't
1299                  * already marked unconfigured, notify the peripheral
1300                  * drivers that this device is no more.
1301                  */
1302                 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
1303                         /* Send the async notification. */
1304                         xpt_async(AC_LOST_DEVICE, path, NULL);
1305                 PROBE_SET_ACTION(softc, PROBE_INVALID);
1306
1307                 xpt_release_ccb(done_ccb);
1308                 break;
1309         }
1310         case PROBE_REPORT_LUNS:
1311         {
1312                 struct ccb_scsiio *csio;
1313                 struct scsi_report_luns_data *lp;
1314                 u_int nlun, maxlun;
1315
1316                 csio = &done_ccb->csio;
1317
1318                 lp = (struct scsi_report_luns_data *)csio->data_ptr;
1319                 nlun = scsi_4btoul(lp->length) / 8;
1320                 maxlun = (csio->dxfer_len / 8) - 1;
1321
1322                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1323                         if (cam_periph_error(done_ccb, 0,
1324                                 done_ccb->ccb_h.target_lun > 0 ?
1325                                 SF_RETRY_UA|SF_QUIET_IR : SF_RETRY_UA) ==
1326                             ERESTART) {
1327                                 goto outr;
1328                         }
1329                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1330                                 xpt_release_devq(done_ccb->ccb_h.path, 1,
1331                                     TRUE);
1332                         }
1333                         free(lp, M_CAMXPT);
1334                         lp = NULL;
1335                 } else if (nlun > maxlun) {
1336                         /*
1337                          * Reallocate and retry to cover all luns
1338                          */
1339                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1340                             ("Probe: reallocating REPORT_LUNS for %u luns\n",
1341                              nlun));
1342                         free(lp, M_CAMXPT);
1343                         path->target->rpl_size = (nlun << 3) + 8;
1344                         xpt_release_ccb(done_ccb);
1345                         xpt_schedule(periph, priority);
1346                         goto out;
1347                 } else if (nlun == 0) {
1348                         /*
1349                          * If there don't appear to be any luns, bail.
1350                          */
1351                         free(lp, M_CAMXPT);
1352                         lp = NULL;
1353                 } else {
1354                         lun_id_t lun;
1355                         int idx;
1356
1357                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1358                            ("Probe: %u lun(s) reported\n", nlun));
1359
1360                         CAM_GET_LUN(lp, 0, lun);
1361                         /*
1362                          * If the first lun is not lun 0, then either there
1363                          * is no lun 0 in the list, or the list is unsorted.
1364                          */
1365                         if (lun != 0) {
1366                                 for (idx = 0; idx < nlun; idx++) {
1367                                         CAM_GET_LUN(lp, idx, lun);
1368                                         if (lun == 0) {
1369                                                 break;
1370                                         }
1371                                 }
1372                                 if (idx != nlun) {
1373                                         uint8_t tlun[8];
1374                                         memcpy(tlun,
1375                                             lp->luns[0].lundata, 8);
1376                                         memcpy(lp->luns[0].lundata,
1377                                             lp->luns[idx].lundata, 8);
1378                                         memcpy(lp->luns[idx].lundata,
1379                                             tlun, 8);
1380                                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1381                                             ("lun 0 in position %u\n", idx));
1382                                 }
1383                         }
1384                         /*
1385                          * If we have an old lun list, We can either
1386                          * retest luns that appear to have been dropped,
1387                          * or just nuke them.  We'll opt for the latter.
1388                          * This function will also install the new list
1389                          * in the target structure.
1390                          */
1391                         probe_purge_old(path, lp, softc->flags);
1392                         lp = NULL;
1393                 }
1394                 /* The processing above should either exit via a `goto
1395                  * out` or leave the `lp` variable `NULL` and (if
1396                  * applicable) `free()` the storage to which it had
1397                  * pointed. Assert here that is the case.
1398                  */
1399                 KASSERT(lp == NULL, ("%s: lp is not NULL", __func__));
1400                 inq_buf = &path->device->inq_data;
1401                 if (path->device->flags & CAM_DEV_INQUIRY_DATA_VALID &&
1402                     (SID_QUAL(inq_buf) == SID_QUAL_LU_CONNECTED ||
1403                     SID_QUAL(inq_buf) == SID_QUAL_LU_OFFLINE)) {
1404                         if (INQ_DATA_TQ_ENABLED(inq_buf))
1405                                 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
1406                         else
1407                                 PROBE_SET_ACTION(softc,
1408                                     PROBE_SUPPORTED_VPD_LIST);
1409                         xpt_release_ccb(done_ccb);
1410                         xpt_schedule(periph, priority);
1411                         goto out;
1412                 }
1413                 PROBE_SET_ACTION(softc, PROBE_INVALID);
1414                 xpt_release_ccb(done_ccb);
1415                 break;
1416         }
1417         case PROBE_MODE_SENSE:
1418         {
1419                 struct ccb_scsiio *csio;
1420                 struct scsi_mode_header_6 *mode_hdr;
1421
1422                 csio = &done_ccb->csio;
1423                 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
1424                 if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
1425                         struct scsi_control_page *page;
1426                         u_int8_t *offset;
1427
1428                         offset = ((u_int8_t *)&mode_hdr[1])
1429                             + mode_hdr->blk_desc_len;
1430                         page = (struct scsi_control_page *)offset;
1431                         path->device->queue_flags = page->queue_flags;
1432                 } else if (cam_periph_error(done_ccb, 0,
1433                         SF_RETRY_UA|SF_NO_PRINT) == ERESTART) {
1434                         goto outr;
1435                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1436                         /* Don't wedge the queue */
1437                         xpt_release_devq(done_ccb->ccb_h.path,
1438                                          /*count*/1, /*run_queue*/TRUE);
1439                 }
1440                 xpt_release_ccb(done_ccb);
1441                 free(mode_hdr, M_CAMXPT);
1442                 PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
1443                 xpt_schedule(periph, priority);
1444                 goto out;
1445         }
1446         case PROBE_SUPPORTED_VPD_LIST:
1447         {
1448                 struct ccb_scsiio *csio;
1449                 struct scsi_vpd_supported_page_list *page_list;
1450
1451                 csio = &done_ccb->csio;
1452                 page_list =
1453                     (struct scsi_vpd_supported_page_list *)csio->data_ptr;
1454
1455                 if (path->device->supported_vpds != NULL) {
1456                         free(path->device->supported_vpds, M_CAMXPT);
1457                         path->device->supported_vpds = NULL;
1458                         path->device->supported_vpds_len = 0;
1459                 }
1460
1461                 if (page_list == NULL) {
1462                         /*
1463                          * Don't process the command as it was never sent
1464                          */
1465                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1466                         /* Got vpd list */
1467                         path->device->supported_vpds_len = page_list->length +
1468                             SVPD_SUPPORTED_PAGES_HDR_LEN;
1469                         path->device->supported_vpds = (uint8_t *)page_list;
1470                         xpt_release_ccb(done_ccb);
1471                         PROBE_SET_ACTION(softc, PROBE_DEVICE_ID);
1472                         xpt_schedule(periph, priority);
1473                         goto out;
1474                 } else if (cam_periph_error(done_ccb, 0,
1475                         SF_RETRY_UA|SF_NO_PRINT) == ERESTART) {
1476                         goto outr;
1477                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1478                         /* Don't wedge the queue */
1479                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1480                                          /*run_queue*/TRUE);
1481                 }
1482
1483                 if (page_list)
1484                         free(page_list, M_CAMXPT);
1485                 /* No VPDs available, skip to device check. */
1486                 csio->data_ptr = NULL;
1487                 goto probe_device_check;
1488         }
1489         case PROBE_DEVICE_ID:
1490         {
1491                 struct scsi_vpd_device_id *devid;
1492                 struct ccb_scsiio *csio;
1493                 uint32_t length = 0;
1494
1495                 csio = &done_ccb->csio;
1496                 devid = (struct scsi_vpd_device_id *)csio->data_ptr;
1497
1498                 /* Clean up from previous instance of this device */
1499                 if (path->device->device_id != NULL) {
1500                         path->device->device_id_len = 0;
1501                         free(path->device->device_id, M_CAMXPT);
1502                         path->device->device_id = NULL;
1503                 }
1504
1505                 if (devid == NULL) {
1506                         /* Don't process the command as it was never sent */
1507                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1508                         length = scsi_2btoul(devid->length);
1509                         if (length != 0) {
1510                                 /*
1511                                  * NB: device_id_len is actual response
1512                                  * size, not buffer size.
1513                                  */
1514                                 path->device->device_id_len = length +
1515                                     SVPD_DEVICE_ID_HDR_LEN;
1516                                 path->device->device_id = (uint8_t *)devid;
1517                         }
1518                 } else if (cam_periph_error(done_ccb, 0,
1519                         SF_RETRY_UA) == ERESTART) {
1520                         goto outr;
1521                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1522                         /* Don't wedge the queue */
1523                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1524                                          /*run_queue*/TRUE);
1525                 }
1526
1527                 /* Free the device id space if we don't use it */
1528                 if (devid && length == 0)
1529                         free(devid, M_CAMXPT);
1530                 xpt_release_ccb(done_ccb);
1531                 PROBE_SET_ACTION(softc, PROBE_EXTENDED_INQUIRY);
1532                 xpt_schedule(periph, priority);
1533                 goto out;
1534         }
1535         case PROBE_EXTENDED_INQUIRY: {
1536                 struct scsi_vpd_extended_inquiry_data *ext_inq;
1537                 struct ccb_scsiio *csio;
1538                 int32_t length = 0;
1539
1540                 csio = &done_ccb->csio;
1541                 ext_inq = (struct scsi_vpd_extended_inquiry_data *)
1542                     csio->data_ptr;
1543                 if (path->device->ext_inq != NULL) {
1544                         path->device->ext_inq_len = 0;
1545                         free(path->device->ext_inq, M_CAMXPT);
1546                         path->device->ext_inq = NULL;
1547                 }
1548
1549                 if (ext_inq == NULL) {
1550                         /* Don't process the command as it was never sent */
1551                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1552                         length = scsi_2btoul(ext_inq->page_length) +
1553                             __offsetof(struct scsi_vpd_extended_inquiry_data,
1554                             flags1);
1555                         length = min(length, sizeof(*ext_inq));
1556                         length -= csio->resid;
1557                         if (length > 0) {
1558                                 path->device->ext_inq_len = length;
1559                                 path->device->ext_inq = (uint8_t *)ext_inq;
1560                         }
1561                 } else if (cam_periph_error(done_ccb, 0, SF_RETRY_UA) ==
1562                     ERESTART) {
1563                         goto outr;
1564                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1565                         /* Don't wedge the queue */
1566                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1567                                          /*run_queue*/TRUE);
1568                 }
1569
1570                 /* Free the device id space if we don't use it */
1571                 if (ext_inq && length <= 0)
1572                         free(ext_inq, M_CAMXPT);
1573                 xpt_release_ccb(done_ccb);
1574                 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM);
1575                 xpt_schedule(periph, priority);
1576                 goto out;
1577         }
1578
1579 probe_device_check:
1580         case PROBE_SERIAL_NUM:
1581         {
1582                 struct ccb_scsiio *csio;
1583                 struct scsi_vpd_unit_serial_number *serial_buf;
1584                 u_int32_t  priority;
1585                 int changed;
1586                 int have_serialnum;
1587
1588                 changed = 1;
1589                 have_serialnum = 0;
1590                 csio = &done_ccb->csio;
1591                 priority = done_ccb->ccb_h.pinfo.priority;
1592                 serial_buf =
1593                     (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
1594
1595                 if (serial_buf == NULL) {
1596                         /*
1597                          * Don't process the command as it was never sent
1598                          */
1599                 } else if (cam_ccb_status(done_ccb) == CAM_REQ_CMP
1600                         && (serial_buf->length > 0)) {
1601                         have_serialnum = 1;
1602                         path->device->serial_num =
1603                                 (u_int8_t *)malloc((serial_buf->length + 1),
1604                                                    M_CAMXPT, M_NOWAIT);
1605                         if (path->device->serial_num != NULL) {
1606                                 int start, slen;
1607
1608                                 start = strspn(serial_buf->serial_num, " ");
1609                                 slen = serial_buf->length - start;
1610                                 if (slen <= 0) {
1611                                         /*
1612                                          * SPC5r05 says that an all-space serial
1613                                          * number means no product serial number
1614                                          * is available
1615                                          */
1616                                         slen = 0;
1617                                 }
1618                                 /*
1619                                  * In apparent violation of the spec, some
1620                                  * devices pad their serial numbers with
1621                                  * trailing spaces. Remove them.
1622                                  */
1623                                 while (slen > 0 &&
1624                                     serial_buf->serial_num[start + slen - 1] == ' ')
1625                                         slen--;
1626                                 memcpy(path->device->serial_num,
1627                                        &serial_buf->serial_num[start], slen);
1628                                 path->device->serial_num_len = slen;
1629                                 path->device->serial_num[slen] = '\0';
1630                         }
1631                 } else if (cam_periph_error(done_ccb, 0,
1632                         SF_RETRY_UA|SF_NO_PRINT) == ERESTART) {
1633                         goto outr;
1634                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1635                         /* Don't wedge the queue */
1636                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1637                                          /*run_queue*/TRUE);
1638                 }
1639
1640                 /*
1641                  * Let's see if we have seen this device before.
1642                  */
1643                 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
1644                         MD5_CTX context;
1645                         u_int8_t digest[16];
1646
1647                         MD5Init(&context);
1648
1649                         MD5Update(&context,
1650                                   (unsigned char *)&path->device->inq_data,
1651                                   sizeof(struct scsi_inquiry_data));
1652
1653                         if (have_serialnum)
1654                                 MD5Update(&context, path->device->serial_num,
1655                                           path->device->serial_num_len);
1656
1657                         MD5Final(digest, &context);
1658                         if (bcmp(softc->digest, digest, 16) == 0)
1659                                 changed = 0;
1660
1661                         /*
1662                          * XXX Do we need to do a TUR in order to ensure
1663                          *     that the device really hasn't changed???
1664                          */
1665                         if ((changed != 0)
1666                          && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
1667                                 xpt_async(AC_LOST_DEVICE, path, NULL);
1668                 }
1669                 if (serial_buf != NULL)
1670                         free(serial_buf, M_CAMXPT);
1671
1672                 if (changed != 0) {
1673                         /*
1674                          * Now that we have all the necessary
1675                          * information to safely perform transfer
1676                          * negotiations... Controllers don't perform
1677                          * any negotiation or tagged queuing until
1678                          * after the first XPT_SET_TRAN_SETTINGS ccb is
1679                          * received.  So, on a new device, just retrieve
1680                          * the user settings, and set them as the current
1681                          * settings to set the device up.
1682                          */
1683                         proberequestdefaultnegotiation(periph);
1684                         xpt_release_ccb(done_ccb);
1685
1686                         /*
1687                          * Perform a TUR to allow the controller to
1688                          * perform any necessary transfer negotiation.
1689                          */
1690                         PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
1691                         xpt_schedule(periph, priority);
1692                         goto out;
1693                 }
1694                 xpt_release_ccb(done_ccb);
1695                 break;
1696         }
1697         case PROBE_TUR_FOR_NEGOTIATION:
1698         case PROBE_DV_EXIT:
1699                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1700                         if (cam_periph_error(done_ccb, 0, SF_NO_PRINT |
1701                             SF_NO_RECOVERY | SF_NO_RETRY) == ERESTART)
1702                                 goto outr;
1703                 }
1704                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1705                         /* Don't wedge the queue */
1706                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1707                                          /*run_queue*/TRUE);
1708                 }
1709                 /*
1710                  * Do Domain Validation for lun 0 on devices that claim
1711                  * to support Synchronous Transfer modes.
1712                  */
1713                 if (softc->action == PROBE_TUR_FOR_NEGOTIATION
1714                  && done_ccb->ccb_h.target_lun == 0
1715                  && (path->device->inq_data.flags & SID_Sync) != 0
1716                  && (path->device->flags & CAM_DEV_IN_DV) == 0) {
1717                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1718                             ("Begin Domain Validation\n"));
1719                         path->device->flags |= CAM_DEV_IN_DV;
1720                         xpt_release_ccb(done_ccb);
1721                         PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV1);
1722                         xpt_schedule(periph, priority);
1723                         goto out;
1724                 }
1725                 if (softc->action == PROBE_DV_EXIT) {
1726                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1727                             ("Leave Domain Validation\n"));
1728                 }
1729                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1730                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1731                         xpt_acquire_device(path->device);
1732                 }
1733                 path->device->flags &=
1734                     ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
1735                 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
1736                         /* Inform the XPT that a new device has been found */
1737                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1738                         xpt_action(done_ccb);
1739                         xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
1740                                   done_ccb);
1741                 }
1742                 PROBE_SET_ACTION(softc, PROBE_DONE);
1743                 xpt_release_ccb(done_ccb);
1744                 break;
1745         case PROBE_INQUIRY_BASIC_DV1:
1746         case PROBE_INQUIRY_BASIC_DV2:
1747         {
1748                 struct scsi_inquiry_data *nbuf;
1749                 struct ccb_scsiio *csio;
1750
1751                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1752                         if (cam_periph_error(done_ccb, 0, SF_NO_PRINT |
1753                             SF_NO_RECOVERY | SF_NO_RETRY) == ERESTART)
1754                                 goto outr;
1755                 }
1756                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1757                         /* Don't wedge the queue */
1758                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1759                                          /*run_queue*/TRUE);
1760                 }
1761                 csio = &done_ccb->csio;
1762                 nbuf = (struct scsi_inquiry_data *)csio->data_ptr;
1763                 if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) {
1764                         xpt_print(path,
1765                             "inquiry data fails comparison at DV%d step\n",
1766                             softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2);
1767                         if (proberequestbackoff(periph, path->device)) {
1768                                 path->device->flags &= ~CAM_DEV_IN_DV;
1769                                 PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
1770                         } else {
1771                                 /* give up */
1772                                 PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
1773                         }
1774                         free(nbuf, M_CAMXPT);
1775                         xpt_release_ccb(done_ccb);
1776                         xpt_schedule(periph, priority);
1777                         goto out;
1778                 }
1779                 free(nbuf, M_CAMXPT);
1780                 if (softc->action == PROBE_INQUIRY_BASIC_DV1) {
1781                         PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV2);
1782                         xpt_release_ccb(done_ccb);
1783                         xpt_schedule(periph, priority);
1784                         goto out;
1785                 }
1786                 if (softc->action == PROBE_INQUIRY_BASIC_DV2) {
1787                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1788                             ("Leave Domain Validation Successfully\n"));
1789                 }
1790                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1791                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1792                         xpt_acquire_device(path->device);
1793                 }
1794                 path->device->flags &=
1795                     ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
1796                 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
1797                         /* Inform the XPT that a new device has been found */
1798                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1799                         xpt_action(done_ccb);
1800                         xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
1801                                   done_ccb);
1802                 }
1803                 PROBE_SET_ACTION(softc, PROBE_DONE);
1804                 xpt_release_ccb(done_ccb);
1805                 break;
1806         }
1807         default:
1808                 panic("probedone: invalid action state 0x%x\n", softc->action);
1809         }
1810         done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
1811         TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
1812         done_ccb->ccb_h.status = CAM_REQ_CMP;
1813         xpt_done(done_ccb);
1814         if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
1815                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe completed\n"));
1816                 /* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */
1817                 cam_release_devq(path, 0, 0, 0, FALSE);
1818                 cam_periph_release_locked(periph);
1819                 cam_periph_invalidate(periph);
1820                 cam_periph_release_locked(periph);
1821         } else {
1822                 probeschedule(periph);
1823                 goto out;
1824         }
1825 }
1826
1827 static void
1828 probe_purge_old(struct cam_path *path, struct scsi_report_luns_data *new,
1829     probe_flags flags)
1830 {
1831         struct cam_path *tp;
1832         struct scsi_report_luns_data *old;
1833         u_int idx1, idx2, nlun_old, nlun_new;
1834         lun_id_t this_lun;
1835         u_int8_t *ol, *nl;
1836
1837         if (path->target == NULL) {
1838                 return;
1839         }
1840         mtx_lock(&path->target->luns_mtx);
1841         old = path->target->luns;
1842         path->target->luns = new;
1843         mtx_unlock(&path->target->luns_mtx);
1844         if (old == NULL)
1845                 return;
1846         nlun_old = scsi_4btoul(old->length) / 8;
1847         nlun_new = scsi_4btoul(new->length) / 8;
1848
1849         /*
1850          * We are not going to assume sorted lists. Deal.
1851          */
1852         for (idx1 = 0; idx1 < nlun_old; idx1++) {
1853                 ol = old->luns[idx1].lundata;
1854                 for (idx2 = 0; idx2 < nlun_new; idx2++) {
1855                         nl = new->luns[idx2].lundata;
1856                         if (memcmp(nl, ol, 8) == 0) {
1857                                 break;
1858                         }
1859                 }
1860                 if (idx2 < nlun_new) {
1861                         continue;
1862                 }
1863                 /*
1864                  * An 'old' item not in the 'new' list.
1865                  * Nuke it. Except that if it is lun 0,
1866                  * that would be what the probe state
1867                  * machine is currently working on,
1868                  * so we won't do that.
1869                  */
1870                 CAM_GET_LUN(old, idx1, this_lun);
1871                 if (this_lun == 0) {
1872                         continue;
1873                 }
1874
1875                 /*
1876                  * We also cannot nuke it if it is
1877                  * not in a lun format we understand
1878                  * and replace the LUN with a "simple" LUN
1879                  * if that is all the HBA supports.
1880                  */
1881                 if (!(flags & PROBE_EXTLUN)) {
1882                         if (!CAM_CAN_GET_SIMPLE_LUN(old, idx1))
1883                                 continue;
1884                         CAM_GET_SIMPLE_LUN(old, idx1, this_lun);
1885                 }
1886
1887                 if (xpt_create_path(&tp, NULL, xpt_path_path_id(path),
1888                     xpt_path_target_id(path), this_lun) == CAM_REQ_CMP) {
1889                         xpt_async(AC_LOST_DEVICE, tp, NULL);
1890                         xpt_free_path(tp);
1891                 }
1892         }
1893         free(old, M_CAMXPT);
1894 }
1895
1896 static void
1897 probecleanup(struct cam_periph *periph)
1898 {
1899         free(periph->softc, M_CAMXPT);
1900 }
1901
1902 static void
1903 scsi_find_quirk(struct cam_ed *device)
1904 {
1905         struct scsi_quirk_entry *quirk;
1906         caddr_t match;
1907
1908         match = cam_quirkmatch((caddr_t)&device->inq_data,
1909                                (caddr_t)scsi_quirk_table,
1910                                nitems(scsi_quirk_table),
1911                                sizeof(*scsi_quirk_table), scsi_inquiry_match);
1912
1913         if (match == NULL)
1914                 panic("xpt_find_quirk: device didn't match wildcard entry!!");
1915
1916         quirk = (struct scsi_quirk_entry *)match;
1917         device->quirk = quirk;
1918         device->mintags = quirk->mintags;
1919         device->maxtags = quirk->maxtags;
1920 }
1921
1922 typedef struct {
1923         union   ccb *request_ccb;
1924         struct  ccb_pathinq *cpi;
1925         int     counter;
1926         int     lunindex[0];
1927 } scsi_scan_bus_info;
1928
1929 /*
1930  * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
1931  * As the scan progresses, scsi_scan_bus is used as the
1932  * callback on completion function.
1933  */
1934 static void
1935 scsi_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
1936 {
1937         struct mtx *mtx;
1938
1939         CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
1940                   ("scsi_scan_bus\n"));
1941         switch (request_ccb->ccb_h.func_code) {
1942         case XPT_SCAN_BUS:
1943         case XPT_SCAN_TGT:
1944         {
1945                 scsi_scan_bus_info *scan_info;
1946                 union   ccb *work_ccb, *reset_ccb;
1947                 struct  cam_path *path;
1948                 u_int   i;
1949                 u_int   low_target, max_target;
1950                 u_int   initiator_id;
1951
1952                 /* Find out the characteristics of the bus */
1953                 work_ccb = xpt_alloc_ccb_nowait();
1954                 if (work_ccb == NULL) {
1955                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1956                         xpt_done(request_ccb);
1957                         return;
1958                 }
1959                 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
1960                               request_ccb->ccb_h.pinfo.priority);
1961                 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
1962                 xpt_action(work_ccb);
1963                 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
1964                         request_ccb->ccb_h.status = work_ccb->ccb_h.status;
1965                         xpt_free_ccb(work_ccb);
1966                         xpt_done(request_ccb);
1967                         return;
1968                 }
1969
1970                 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
1971                         /*
1972                          * Can't scan the bus on an adapter that
1973                          * cannot perform the initiator role.
1974                          */
1975                         request_ccb->ccb_h.status = CAM_REQ_CMP;
1976                         xpt_free_ccb(work_ccb);
1977                         xpt_done(request_ccb);
1978                         return;
1979                 }
1980
1981                 /* We may need to reset bus first, if we haven't done it yet. */
1982                 if ((work_ccb->cpi.hba_inquiry &
1983                     (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) &&
1984                     !(work_ccb->cpi.hba_misc & PIM_NOBUSRESET) &&
1985                     !timevalisset(&request_ccb->ccb_h.path->bus->last_reset) &&
1986                     (reset_ccb = xpt_alloc_ccb_nowait()) != NULL) {
1987                         xpt_setup_ccb(&reset_ccb->ccb_h, request_ccb->ccb_h.path,
1988                               CAM_PRIORITY_NONE);
1989                         reset_ccb->ccb_h.func_code = XPT_RESET_BUS;
1990                         xpt_action(reset_ccb);
1991                         if (reset_ccb->ccb_h.status != CAM_REQ_CMP) {
1992                                 request_ccb->ccb_h.status = reset_ccb->ccb_h.status;
1993                                 xpt_free_ccb(reset_ccb);
1994                                 xpt_free_ccb(work_ccb);
1995                                 xpt_done(request_ccb);
1996                                 return;
1997                         }
1998                         xpt_free_ccb(reset_ccb);
1999                 }
2000
2001                 /* Save some state for use while we probe for devices */
2002                 scan_info = (scsi_scan_bus_info *) malloc(sizeof(scsi_scan_bus_info) +
2003                     (work_ccb->cpi.max_target * sizeof (u_int)), M_CAMXPT, M_ZERO|M_NOWAIT);
2004                 if (scan_info == NULL) {
2005                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
2006                         xpt_free_ccb(work_ccb);
2007                         xpt_done(request_ccb);
2008                         return;
2009                 }
2010                 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
2011                    ("SCAN start for %p\n", scan_info));
2012                 scan_info->request_ccb = request_ccb;
2013                 scan_info->cpi = &work_ccb->cpi;
2014
2015                 /* Cache on our stack so we can work asynchronously */
2016                 max_target = scan_info->cpi->max_target;
2017                 low_target = 0;
2018                 initiator_id = scan_info->cpi->initiator_id;
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         memset(&cpi, 0, sizeof(cpi));
2309         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2310         cpi.ccb_h.func_code = XPT_PATH_INQ;
2311         xpt_action((union ccb *)&cpi);
2312
2313         if (cpi.ccb_h.status != CAM_REQ_CMP) {
2314                 if (request_ccb != NULL) {
2315                         request_ccb->ccb_h.status = cpi.ccb_h.status;
2316                         xpt_done(request_ccb);
2317                 }
2318                 return;
2319         }
2320
2321         if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
2322                 /*
2323                  * Can't scan the bus on an adapter that
2324                  * cannot perform the initiator role.
2325                  */
2326                 if (request_ccb != NULL) {
2327                         request_ccb->ccb_h.status = CAM_REQ_CMP;
2328                         xpt_done(request_ccb);
2329                 }
2330                 return;
2331         }
2332
2333         if (request_ccb == NULL) {
2334                 request_ccb = xpt_alloc_ccb_nowait();
2335                 if (request_ccb == NULL) {
2336                         xpt_print(path, "scsi_scan_lun: can't allocate CCB, "
2337                             "can't continue\n");
2338                         return;
2339                 }
2340                 status = xpt_create_path(&new_path, NULL,
2341                                           path->bus->path_id,
2342                                           path->target->target_id,
2343                                           path->device->lun_id);
2344                 if (status != CAM_REQ_CMP) {
2345                         xpt_print(path, "scsi_scan_lun: can't create path, "
2346                             "can't continue\n");
2347                         xpt_free_ccb(request_ccb);
2348                         return;
2349                 }
2350                 xpt_setup_ccb(&request_ccb->ccb_h, new_path, CAM_PRIORITY_XPT);
2351                 request_ccb->ccb_h.cbfcnp = xptscandone;
2352                 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2353                 request_ccb->ccb_h.flags |= CAM_UNLOCKED;
2354                 request_ccb->crcn.flags = flags;
2355         }
2356
2357         lock = (xpt_path_owned(path) == 0);
2358         if (lock)
2359                 xpt_path_lock(path);
2360         if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
2361                 if ((old_periph->flags & CAM_PERIPH_INVALID) == 0) {
2362                         probe_softc *softc;
2363
2364                         softc = (probe_softc *)old_periph->softc;
2365                         TAILQ_INSERT_TAIL(&softc->request_ccbs,
2366                             &request_ccb->ccb_h, periph_links.tqe);
2367                 } else {
2368                         request_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
2369                         xpt_done(request_ccb);
2370                 }
2371         } else {
2372                 status = cam_periph_alloc(proberegister, NULL, probecleanup,
2373                                           probestart, "probe",
2374                                           CAM_PERIPH_BIO,
2375                                           request_ccb->ccb_h.path, NULL, 0,
2376                                           request_ccb);
2377
2378                 if (status != CAM_REQ_CMP) {
2379                         xpt_print(path, "scsi_scan_lun: cam_alloc_periph "
2380                             "returned an error, can't continue probe\n");
2381                         request_ccb->ccb_h.status = status;
2382                         xpt_done(request_ccb);
2383                 }
2384         }
2385         if (lock)
2386                 xpt_path_unlock(path);
2387 }
2388
2389 static void
2390 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
2391 {
2392
2393         xpt_free_path(done_ccb->ccb_h.path);
2394         xpt_free_ccb(done_ccb);
2395 }
2396
2397 static struct cam_ed *
2398 scsi_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
2399 {
2400         struct scsi_quirk_entry *quirk;
2401         struct cam_ed *device;
2402
2403         device = xpt_alloc_device(bus, target, lun_id);
2404         if (device == NULL)
2405                 return (NULL);
2406
2407         /*
2408          * Take the default quirk entry until we have inquiry
2409          * data and can determine a better quirk to use.
2410          */
2411         quirk = &scsi_quirk_table[nitems(scsi_quirk_table) - 1];
2412         device->quirk = (void *)quirk;
2413         device->mintags = quirk->mintags;
2414         device->maxtags = quirk->maxtags;
2415         bzero(&device->inq_data, sizeof(device->inq_data));
2416         device->inq_flags = 0;
2417         device->queue_flags = 0;
2418         device->serial_num = NULL;
2419         device->serial_num_len = 0;
2420         device->device_id = NULL;
2421         device->device_id_len = 0;
2422         device->supported_vpds = NULL;
2423         device->supported_vpds_len = 0;
2424         return (device);
2425 }
2426
2427 static void
2428 scsi_devise_transport(struct cam_path *path)
2429 {
2430         struct ccb_pathinq cpi;
2431         struct ccb_trans_settings cts;
2432         struct scsi_inquiry_data *inq_buf;
2433
2434         /* Get transport information from the SIM */
2435         memset(&cpi, 0, sizeof(cpi));
2436         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2437         cpi.ccb_h.func_code = XPT_PATH_INQ;
2438         xpt_action((union ccb *)&cpi);
2439
2440         inq_buf = NULL;
2441         if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
2442                 inq_buf = &path->device->inq_data;
2443         path->device->protocol = PROTO_SCSI;
2444         path->device->protocol_version =
2445             inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
2446         path->device->transport = cpi.transport;
2447         path->device->transport_version = cpi.transport_version;
2448
2449         /*
2450          * Any device not using SPI3 features should
2451          * be considered SPI2 or lower.
2452          */
2453         if (inq_buf != NULL) {
2454                 if (path->device->transport == XPORT_SPI
2455                  && (inq_buf->spi3data & SID_SPI_MASK) == 0
2456                  && path->device->transport_version > 2)
2457                         path->device->transport_version = 2;
2458         } else {
2459                 struct cam_ed* otherdev;
2460
2461                 for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
2462                      otherdev != NULL;
2463                      otherdev = TAILQ_NEXT(otherdev, links)) {
2464                         if (otherdev != path->device)
2465                                 break;
2466                 }
2467
2468                 if (otherdev != NULL) {
2469                         /*
2470                          * Initially assume the same versioning as
2471                          * prior luns for this target.
2472                          */
2473                         path->device->protocol_version =
2474                             otherdev->protocol_version;
2475                         path->device->transport_version =
2476                             otherdev->transport_version;
2477                 } else {
2478                         /* Until we know better, opt for safety */
2479                         path->device->protocol_version = 2;
2480                         if (path->device->transport == XPORT_SPI)
2481                                 path->device->transport_version = 2;
2482                         else
2483                                 path->device->transport_version = 0;
2484                 }
2485         }
2486
2487         /*
2488          * XXX
2489          * For a device compliant with SPC-2 we should be able
2490          * to determine the transport version supported by
2491          * scrutinizing the version descriptors in the
2492          * inquiry buffer.
2493          */
2494
2495         /* Tell the controller what we think */
2496         memset(&cts, 0, sizeof(cts));
2497         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
2498         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
2499         cts.type = CTS_TYPE_CURRENT_SETTINGS;
2500         cts.transport = path->device->transport;
2501         cts.transport_version = path->device->transport_version;
2502         cts.protocol = path->device->protocol;
2503         cts.protocol_version = path->device->protocol_version;
2504         cts.proto_specific.valid = 0;
2505         cts.xport_specific.valid = 0;
2506         xpt_action((union ccb *)&cts);
2507 }
2508
2509 static void
2510 scsi_dev_advinfo(union ccb *start_ccb)
2511 {
2512         struct cam_ed *device;
2513         struct ccb_dev_advinfo *cdai;
2514         off_t amt;
2515
2516         xpt_path_assert(start_ccb->ccb_h.path, MA_OWNED);
2517         start_ccb->ccb_h.status = CAM_REQ_INVALID;
2518         device = start_ccb->ccb_h.path->device;
2519         cdai = &start_ccb->cdai;
2520         switch(cdai->buftype) {
2521         case CDAI_TYPE_SCSI_DEVID:
2522                 if (cdai->flags & CDAI_FLAG_STORE)
2523                         return;
2524                 cdai->provsiz = device->device_id_len;
2525                 if (device->device_id_len == 0)
2526                         break;
2527                 amt = device->device_id_len;
2528                 if (cdai->provsiz > cdai->bufsiz)
2529                         amt = cdai->bufsiz;
2530                 memcpy(cdai->buf, device->device_id, amt);
2531                 break;
2532         case CDAI_TYPE_SERIAL_NUM:
2533                 if (cdai->flags & CDAI_FLAG_STORE)
2534                         return;
2535                 cdai->provsiz = device->serial_num_len;
2536                 if (device->serial_num_len == 0)
2537                         break;
2538                 amt = device->serial_num_len;
2539                 if (cdai->provsiz > cdai->bufsiz)
2540                         amt = cdai->bufsiz;
2541                 memcpy(cdai->buf, device->serial_num, amt);
2542                 break;
2543         case CDAI_TYPE_PHYS_PATH:
2544                 if (cdai->flags & CDAI_FLAG_STORE) {
2545                         if (device->physpath != NULL) {
2546                                 free(device->physpath, M_CAMXPT);
2547                                 device->physpath = NULL;
2548                                 device->physpath_len = 0;
2549                         }
2550                         /* Clear existing buffer if zero length */
2551                         if (cdai->bufsiz == 0)
2552                                 break;
2553                         device->physpath = malloc(cdai->bufsiz, M_CAMXPT, M_NOWAIT);
2554                         if (device->physpath == NULL) {
2555                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
2556                                 return;
2557                         }
2558                         device->physpath_len = cdai->bufsiz;
2559                         memcpy(device->physpath, cdai->buf, cdai->bufsiz);
2560                 } else {
2561                         cdai->provsiz = device->physpath_len;
2562                         if (device->physpath_len == 0)
2563                                 break;
2564                         amt = device->physpath_len;
2565                         if (cdai->provsiz > cdai->bufsiz)
2566                                 amt = cdai->bufsiz;
2567                         memcpy(cdai->buf, device->physpath, amt);
2568                 }
2569                 break;
2570         case CDAI_TYPE_RCAPLONG:
2571                 if (cdai->flags & CDAI_FLAG_STORE) {
2572                         if (device->rcap_buf != NULL) {
2573                                 free(device->rcap_buf, M_CAMXPT);
2574                                 device->rcap_buf = NULL;
2575                         }
2576
2577                         device->rcap_len = cdai->bufsiz;
2578                         /* Clear existing buffer if zero length */
2579                         if (cdai->bufsiz == 0)
2580                                 break;
2581
2582                         device->rcap_buf = malloc(cdai->bufsiz, M_CAMXPT,
2583                                                   M_NOWAIT);
2584                         if (device->rcap_buf == NULL) {
2585                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
2586                                 return;
2587                         }
2588
2589                         memcpy(device->rcap_buf, cdai->buf, cdai->bufsiz);
2590                 } else {
2591                         cdai->provsiz = device->rcap_len;
2592                         if (device->rcap_len == 0)
2593                                 break;
2594                         amt = device->rcap_len;
2595                         if (cdai->provsiz > cdai->bufsiz)
2596                                 amt = cdai->bufsiz;
2597                         memcpy(cdai->buf, device->rcap_buf, amt);
2598                 }
2599                 break;
2600         case CDAI_TYPE_EXT_INQ:
2601                 /*
2602                  * We fetch extended inquiry data during probe, if
2603                  * available.  We don't allow changing it.
2604                  */
2605                 if (cdai->flags & CDAI_FLAG_STORE)
2606                         return;
2607                 cdai->provsiz = device->ext_inq_len;
2608                 if (device->ext_inq_len == 0)
2609                         break;
2610                 amt = device->ext_inq_len;
2611                 if (cdai->provsiz > cdai->bufsiz)
2612                         amt = cdai->bufsiz;
2613                 memcpy(cdai->buf, device->ext_inq, amt);
2614                 break;
2615         default:
2616                 return;
2617         }
2618         start_ccb->ccb_h.status = CAM_REQ_CMP;
2619
2620         if (cdai->flags & CDAI_FLAG_STORE) {
2621                 xpt_async(AC_ADVINFO_CHANGED, start_ccb->ccb_h.path,
2622                           (void *)(uintptr_t)cdai->buftype);
2623         }
2624 }
2625
2626 static void
2627 scsi_action(union ccb *start_ccb)
2628 {
2629
2630         if (start_ccb->ccb_h.func_code != XPT_SCSI_IO) {
2631                 KASSERT((start_ccb->ccb_h.alloc_flags & CAM_CCB_FROM_UMA) == 0,
2632                     ("%s: ccb %p, func_code %#x should not be allocated "
2633                     "from UMA zone\n",
2634                     __func__, start_ccb, start_ccb->ccb_h.func_code));
2635         }
2636
2637         switch (start_ccb->ccb_h.func_code) {
2638         case XPT_SET_TRAN_SETTINGS:
2639         {
2640                 scsi_set_transfer_settings(&start_ccb->cts,
2641                                            start_ccb->ccb_h.path,
2642                                            /*async_update*/FALSE);
2643                 break;
2644         }
2645         case XPT_SCAN_BUS:
2646         case XPT_SCAN_TGT:
2647                 scsi_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
2648                 break;
2649         case XPT_SCAN_LUN:
2650                 scsi_scan_lun(start_ccb->ccb_h.path->periph,
2651                               start_ccb->ccb_h.path, start_ccb->crcn.flags,
2652                               start_ccb);
2653                 break;
2654         case XPT_DEV_ADVINFO:
2655         {
2656                 scsi_dev_advinfo(start_ccb);
2657                 break;
2658         }
2659         default:
2660                 xpt_action_default(start_ccb);
2661                 break;
2662         }
2663 }
2664
2665 static void
2666 scsi_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_path *path,
2667                            int async_update)
2668 {
2669         struct  ccb_pathinq cpi;
2670         struct  ccb_trans_settings cur_cts;
2671         struct  ccb_trans_settings_scsi *scsi;
2672         struct  ccb_trans_settings_scsi *cur_scsi;
2673         struct  scsi_inquiry_data *inq_data;
2674         struct  cam_ed *device;
2675
2676         if (path == NULL || (device = path->device) == NULL) {
2677                 cts->ccb_h.status = CAM_PATH_INVALID;
2678                 xpt_done((union ccb *)cts);
2679                 return;
2680         }
2681
2682         if (cts->protocol == PROTO_UNKNOWN
2683          || cts->protocol == PROTO_UNSPECIFIED) {
2684                 cts->protocol = device->protocol;
2685                 cts->protocol_version = device->protocol_version;
2686         }
2687
2688         if (cts->protocol_version == PROTO_VERSION_UNKNOWN
2689          || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
2690                 cts->protocol_version = device->protocol_version;
2691
2692         if (cts->protocol != device->protocol) {
2693                 xpt_print(path, "Uninitialized Protocol %x:%x?\n",
2694                        cts->protocol, device->protocol);
2695                 cts->protocol = device->protocol;
2696         }
2697
2698         if (cts->protocol_version > device->protocol_version) {
2699                 if (bootverbose) {
2700                         xpt_print(path, "Down reving Protocol "
2701                             "Version from %d to %d?\n", cts->protocol_version,
2702                             device->protocol_version);
2703                 }
2704                 cts->protocol_version = device->protocol_version;
2705         }
2706
2707         if (cts->transport == XPORT_UNKNOWN
2708          || cts->transport == XPORT_UNSPECIFIED) {
2709                 cts->transport = device->transport;
2710                 cts->transport_version = device->transport_version;
2711         }
2712
2713         if (cts->transport_version == XPORT_VERSION_UNKNOWN
2714          || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
2715                 cts->transport_version = device->transport_version;
2716
2717         if (cts->transport != device->transport) {
2718                 xpt_print(path, "Uninitialized Transport %x:%x?\n",
2719                     cts->transport, device->transport);
2720                 cts->transport = device->transport;
2721         }
2722
2723         if (cts->transport_version > device->transport_version) {
2724                 if (bootverbose) {
2725                         xpt_print(path, "Down reving Transport "
2726                             "Version from %d to %d?\n", cts->transport_version,
2727                             device->transport_version);
2728                 }
2729                 cts->transport_version = device->transport_version;
2730         }
2731
2732         /*
2733          * Nothing more of interest to do unless
2734          * this is a device connected via the
2735          * SCSI protocol.
2736          */
2737         if (cts->protocol != PROTO_SCSI) {
2738                 if (async_update == FALSE)
2739                         xpt_action_default((union ccb *)cts);
2740                 return;
2741         }
2742
2743         inq_data = &device->inq_data;
2744         scsi = &cts->proto_specific.scsi;
2745         memset(&cpi, 0, sizeof(cpi));
2746         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2747         cpi.ccb_h.func_code = XPT_PATH_INQ;
2748         xpt_action((union ccb *)&cpi);
2749
2750         /* SCSI specific sanity checking */
2751         if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
2752          || (INQ_DATA_TQ_ENABLED(inq_data)) == 0
2753          || (device->queue_flags & SCP_QUEUE_DQUE) != 0
2754          || (device->mintags == 0)) {
2755                 /*
2756                  * Can't tag on hardware that doesn't support tags,
2757                  * doesn't have it enabled, or has broken tag support.
2758                  */
2759                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2760         }
2761
2762         if (async_update == FALSE) {
2763                 /*
2764                  * Perform sanity checking against what the
2765                  * controller and device can do.
2766                  */
2767                 memset(&cur_cts, 0, sizeof(cur_cts));
2768                 xpt_setup_ccb(&cur_cts.ccb_h, path, CAM_PRIORITY_NONE);
2769                 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
2770                 cur_cts.type = cts->type;
2771                 xpt_action((union ccb *)&cur_cts);
2772                 if (cam_ccb_status((union ccb *)&cur_cts) != CAM_REQ_CMP) {
2773                         return;
2774                 }
2775                 cur_scsi = &cur_cts.proto_specific.scsi;
2776                 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
2777                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2778                         scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
2779                 }
2780                 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
2781                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2782         }
2783
2784         /* SPI specific sanity checking */
2785         if (cts->transport == XPORT_SPI && async_update == FALSE) {
2786                 u_int spi3caps;
2787                 struct ccb_trans_settings_spi *spi;
2788                 struct ccb_trans_settings_spi *cur_spi;
2789
2790                 spi = &cts->xport_specific.spi;
2791
2792                 cur_spi = &cur_cts.xport_specific.spi;
2793
2794                 /* Fill in any gaps in what the user gave us */
2795                 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
2796                         spi->sync_period = cur_spi->sync_period;
2797                 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
2798                         spi->sync_period = 0;
2799                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
2800                         spi->sync_offset = cur_spi->sync_offset;
2801                 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
2802                         spi->sync_offset = 0;
2803                 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
2804                         spi->ppr_options = cur_spi->ppr_options;
2805                 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
2806                         spi->ppr_options = 0;
2807                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
2808                         spi->bus_width = cur_spi->bus_width;
2809                 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
2810                         spi->bus_width = 0;
2811                 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
2812                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
2813                         spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
2814                 }
2815                 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
2816                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
2817                 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
2818                   && (inq_data->flags & SID_Sync) == 0
2819                   && cts->type == CTS_TYPE_CURRENT_SETTINGS)
2820                  || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)) {
2821                         /* Force async */
2822                         spi->sync_period = 0;
2823                         spi->sync_offset = 0;
2824                 }
2825
2826                 switch (spi->bus_width) {
2827                 case MSG_EXT_WDTR_BUS_32_BIT:
2828                         if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
2829                           || (inq_data->flags & SID_WBus32) != 0
2830                           || cts->type == CTS_TYPE_USER_SETTINGS)
2831                          && (cpi.hba_inquiry & PI_WIDE_32) != 0)
2832                                 break;
2833                         /* Fall Through to 16-bit */
2834                 case MSG_EXT_WDTR_BUS_16_BIT:
2835                         if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
2836                           || (inq_data->flags & SID_WBus16) != 0
2837                           || cts->type == CTS_TYPE_USER_SETTINGS)
2838                          && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
2839                                 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2840                                 break;
2841                         }
2842                         /* Fall Through to 8-bit */
2843                 default: /* New bus width?? */
2844                 case MSG_EXT_WDTR_BUS_8_BIT:
2845                         /* All targets can do this */
2846                         spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2847                         break;
2848                 }
2849
2850                 spi3caps = cpi.xport_specific.spi.ppr_options;
2851                 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
2852                  && cts->type == CTS_TYPE_CURRENT_SETTINGS)
2853                         spi3caps &= inq_data->spi3data;
2854
2855                 if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
2856                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
2857
2858                 if ((spi3caps & SID_SPI_IUS) == 0)
2859                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2860
2861                 if ((spi3caps & SID_SPI_QAS) == 0)
2862                         spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
2863
2864                 /* No SPI Transfer settings are allowed unless we are wide */
2865                 if (spi->bus_width == 0)
2866                         spi->ppr_options = 0;
2867
2868                 if ((spi->valid & CTS_SPI_VALID_DISC)
2869                  && ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0)) {
2870                         /*
2871                          * Can't tag queue without disconnection.
2872                          */
2873                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2874                         scsi->valid |= CTS_SCSI_VALID_TQ;
2875                 }
2876
2877                 /*
2878                  * If we are currently performing tagged transactions to
2879                  * this device and want to change its negotiation parameters,
2880                  * go non-tagged for a bit to give the controller a chance to
2881                  * negotiate unhampered by tag messages.
2882                  */
2883                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
2884                  && (device->inq_flags & SID_CmdQue) != 0
2885                  && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
2886                  && (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
2887                                    CTS_SPI_VALID_SYNC_OFFSET|
2888                                    CTS_SPI_VALID_BUS_WIDTH)) != 0)
2889                         scsi_toggle_tags(path);
2890         }
2891
2892         if (cts->type == CTS_TYPE_CURRENT_SETTINGS
2893          && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
2894                 int device_tagenb;
2895
2896                 /*
2897                  * If we are transitioning from tags to no-tags or
2898                  * vice-versa, we need to carefully freeze and restart
2899                  * the queue so that we don't overlap tagged and non-tagged
2900                  * commands.  We also temporarily stop tags if there is
2901                  * a change in transfer negotiation settings to allow
2902                  * "tag-less" negotiation.
2903                  */
2904                 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
2905                  || (device->inq_flags & SID_CmdQue) != 0)
2906                         device_tagenb = TRUE;
2907                 else
2908                         device_tagenb = FALSE;
2909
2910                 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
2911                   && device_tagenb == FALSE)
2912                  || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
2913                   && device_tagenb == TRUE)) {
2914                         if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
2915                                 /*
2916                                  * Delay change to use tags until after a
2917                                  * few commands have gone to this device so
2918                                  * the controller has time to perform transfer
2919                                  * negotiations without tagged messages getting
2920                                  * in the way.
2921                                  */
2922                                 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
2923                                 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
2924                         } else {
2925                                 xpt_stop_tags(path);
2926                         }
2927                 }
2928         }
2929         if (async_update == FALSE)
2930                 xpt_action_default((union ccb *)cts);
2931 }
2932
2933 static void
2934 scsi_toggle_tags(struct cam_path *path)
2935 {
2936         struct cam_ed *dev;
2937
2938         /*
2939          * Give controllers a chance to renegotiate
2940          * before starting tag operations.  We
2941          * "toggle" tagged queuing off then on
2942          * which causes the tag enable command delay
2943          * counter to come into effect.
2944          */
2945         dev = path->device;
2946         if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
2947          || ((dev->inq_flags & SID_CmdQue) != 0
2948           && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
2949                 struct ccb_trans_settings cts;
2950
2951                 memset(&cts, 0, sizeof(cts));
2952                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
2953                 cts.protocol = PROTO_SCSI;
2954                 cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
2955                 cts.transport = XPORT_UNSPECIFIED;
2956                 cts.transport_version = XPORT_VERSION_UNSPECIFIED;
2957                 cts.proto_specific.scsi.flags = 0;
2958                 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
2959                 scsi_set_transfer_settings(&cts, path,
2960                                           /*async_update*/TRUE);
2961                 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
2962                 scsi_set_transfer_settings(&cts, path,
2963                                           /*async_update*/TRUE);
2964         }
2965 }
2966
2967 /*
2968  * Handle any per-device event notifications that require action by the XPT.
2969  */
2970 static void
2971 scsi_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
2972               struct cam_ed *device, void *async_arg)
2973 {
2974         cam_status status;
2975         struct cam_path newpath;
2976
2977         /*
2978          * We only need to handle events for real devices.
2979          */
2980         if (target->target_id == CAM_TARGET_WILDCARD
2981          || device->lun_id == CAM_LUN_WILDCARD)
2982                 return;
2983
2984         /*
2985          * We need our own path with wildcards expanded to
2986          * handle certain types of events.
2987          */
2988         if ((async_code == AC_SENT_BDR)
2989          || (async_code == AC_BUS_RESET)
2990          || (async_code == AC_INQ_CHANGED))
2991                 status = xpt_compile_path(&newpath, NULL,
2992                                           bus->path_id,
2993                                           target->target_id,
2994                                           device->lun_id);
2995         else
2996                 status = CAM_REQ_CMP_ERR;
2997
2998         if (status == CAM_REQ_CMP) {
2999                 /*
3000                  * Allow transfer negotiation to occur in a
3001                  * tag free environment and after settle delay.
3002                  */
3003                 if (async_code == AC_SENT_BDR
3004                  || async_code == AC_BUS_RESET) {
3005                         cam_freeze_devq(&newpath);
3006                         cam_release_devq(&newpath,
3007                                 RELSIM_RELEASE_AFTER_TIMEOUT,
3008                                 /*reduction*/0,
3009                                 /*timeout*/scsi_delay,
3010                                 /*getcount_only*/0);
3011                         scsi_toggle_tags(&newpath);
3012                 }
3013
3014                 if (async_code == AC_INQ_CHANGED) {
3015                         /*
3016                          * We've sent a start unit command, or
3017                          * something similar to a device that
3018                          * may have caused its inquiry data to
3019                          * change. So we re-scan the device to
3020                          * refresh the inquiry data for it.
3021                          */
3022                         scsi_scan_lun(newpath.periph, &newpath,
3023                                      CAM_EXPECT_INQ_CHANGE, NULL);
3024                 }
3025                 xpt_release_path(&newpath);
3026         } else if (async_code == AC_LOST_DEVICE &&
3027             (device->flags & CAM_DEV_UNCONFIGURED) == 0) {
3028                 device->flags |= CAM_DEV_UNCONFIGURED;
3029                 xpt_release_device(device);
3030         } else if (async_code == AC_TRANSFER_NEG) {
3031                 struct ccb_trans_settings *settings;
3032                 struct cam_path path;
3033
3034                 settings = (struct ccb_trans_settings *)async_arg;
3035                 xpt_compile_path(&path, NULL, bus->path_id, target->target_id,
3036                                  device->lun_id);
3037                 scsi_set_transfer_settings(settings, &path,
3038                                           /*async_update*/TRUE);
3039                 xpt_release_path(&path);
3040         }
3041 }
3042
3043 static void
3044 _scsi_announce_periph(struct cam_periph *periph, u_int *speed, u_int *freq, struct ccb_trans_settings *cts)
3045 {
3046         struct  ccb_pathinq cpi;
3047         struct  cam_path *path = periph->path;
3048
3049         cam_periph_assert(periph, MA_OWNED);
3050
3051         xpt_setup_ccb(&cts->ccb_h, path, CAM_PRIORITY_NORMAL);
3052         cts->ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
3053         cts->type = CTS_TYPE_CURRENT_SETTINGS;
3054         xpt_action((union ccb*)cts);
3055         if (cam_ccb_status((union ccb *)cts) != CAM_REQ_CMP)
3056                 return;
3057
3058         /* Ask the SIM for its base transfer speed */
3059         memset(&cpi, 0, sizeof(cpi));
3060         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL);
3061         cpi.ccb_h.func_code = XPT_PATH_INQ;
3062         xpt_action((union ccb *)&cpi);
3063
3064         /* Report connection speed */
3065         *speed = cpi.base_transfer_speed;
3066         *freq = 0;
3067
3068         if (cts->ccb_h.status == CAM_REQ_CMP && cts->transport == XPORT_SPI) {
3069                 struct  ccb_trans_settings_spi *spi =
3070                     &cts->xport_specific.spi;
3071
3072                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
3073                   && spi->sync_offset != 0) {
3074                         *freq = scsi_calc_syncsrate(spi->sync_period);
3075                         *speed = *freq;
3076                 }
3077                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
3078                         *speed *= (0x01 << spi->bus_width);
3079         }
3080         if (cts->ccb_h.status == CAM_REQ_CMP && cts->transport == XPORT_FC) {
3081                 struct  ccb_trans_settings_fc *fc =
3082                     &cts->xport_specific.fc;
3083
3084                 if (fc->valid & CTS_FC_VALID_SPEED)
3085                         *speed = fc->bitrate;
3086         }
3087         if (cts->ccb_h.status == CAM_REQ_CMP && cts->transport == XPORT_SAS) {
3088                 struct  ccb_trans_settings_sas *sas =
3089                     &cts->xport_specific.sas;
3090
3091                 if (sas->valid & CTS_SAS_VALID_SPEED)
3092                         *speed = sas->bitrate;
3093         }
3094 }
3095
3096 static void
3097 scsi_announce_periph_sbuf(struct cam_periph *periph, struct sbuf *sb)
3098 {
3099         struct  ccb_trans_settings cts;
3100         u_int speed, freq, mb;
3101
3102         memset(&cts, 0, sizeof(cts));
3103         _scsi_announce_periph(periph, &speed, &freq, &cts);
3104         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP)
3105                 return;
3106
3107         mb = speed / 1000;
3108         if (mb > 0)
3109                 sbuf_printf(sb, "%s%d: %d.%03dMB/s transfers",
3110                        periph->periph_name, periph->unit_number,
3111                        mb, speed % 1000);
3112         else
3113                 sbuf_printf(sb, "%s%d: %dKB/s transfers", periph->periph_name,
3114                        periph->unit_number, speed);
3115         /* Report additional information about SPI connections */
3116         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
3117                 struct  ccb_trans_settings_spi *spi;
3118
3119                 spi = &cts.xport_specific.spi;
3120                 if (freq != 0) {
3121                         sbuf_printf(sb, " (%d.%03dMHz%s, offset %d", freq / 1000,
3122                                freq % 1000,
3123                                (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
3124                              ? " DT" : "",
3125                                spi->sync_offset);
3126                 }
3127                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
3128                  && spi->bus_width > 0) {
3129                         if (freq != 0) {
3130                                 sbuf_printf(sb, ", ");
3131                         } else {
3132                                 sbuf_printf(sb, " (");
3133                         }
3134                         sbuf_printf(sb, "%dbit)", 8 * (0x01 << spi->bus_width));
3135                 } else if (freq != 0) {
3136                         sbuf_printf(sb, ")");
3137                 }
3138         }
3139         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
3140                 struct  ccb_trans_settings_fc *fc;
3141
3142                 fc = &cts.xport_specific.fc;
3143                 if (fc->valid & CTS_FC_VALID_WWNN)
3144                         sbuf_printf(sb, " WWNN 0x%llx", (long long) fc->wwnn);
3145                 if (fc->valid & CTS_FC_VALID_WWPN)
3146                         sbuf_printf(sb, " WWPN 0x%llx", (long long) fc->wwpn);
3147                 if (fc->valid & CTS_FC_VALID_PORT)
3148                         sbuf_printf(sb, " PortID 0x%x", fc->port);
3149         }
3150         sbuf_printf(sb, "\n");
3151 }
3152
3153 static void
3154 scsi_announce_periph(struct cam_periph *periph)
3155 {
3156         struct  ccb_trans_settings cts;
3157         u_int speed, freq, mb;
3158
3159         memset(&cts, 0, sizeof(cts));
3160         _scsi_announce_periph(periph, &speed, &freq, &cts);
3161         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP)
3162                 return;
3163
3164         mb = speed / 1000;
3165         if (mb > 0)
3166                 printf("%s%d: %d.%03dMB/s transfers",
3167                        periph->periph_name, periph->unit_number,
3168                        mb, speed % 1000);
3169         else
3170                 printf("%s%d: %dKB/s transfers", periph->periph_name,
3171                        periph->unit_number, speed);
3172         /* Report additional information about SPI connections */
3173         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
3174                 struct  ccb_trans_settings_spi *spi;
3175
3176                 spi = &cts.xport_specific.spi;
3177                 if (freq != 0) {
3178                         printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
3179                                freq % 1000,
3180                                (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
3181                              ? " DT" : "",
3182                                spi->sync_offset);
3183                 }
3184                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
3185                  && spi->bus_width > 0) {
3186                         if (freq != 0) {
3187                                 printf(", ");
3188                         } else {
3189                                 printf(" (");
3190                         }
3191                         printf("%dbit)", 8 * (0x01 << spi->bus_width));
3192                 } else if (freq != 0) {
3193                         printf(")");
3194                 }
3195         }
3196         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
3197                 struct  ccb_trans_settings_fc *fc;
3198
3199                 fc = &cts.xport_specific.fc;
3200                 if (fc->valid & CTS_FC_VALID_WWNN)
3201                         printf(" WWNN 0x%llx", (long long) fc->wwnn);
3202                 if (fc->valid & CTS_FC_VALID_WWPN)
3203                         printf(" WWPN 0x%llx", (long long) fc->wwpn);
3204                 if (fc->valid & CTS_FC_VALID_PORT)
3205                         printf(" PortID 0x%x", fc->port);
3206         }
3207         printf("\n");
3208 }
3209
3210 static void
3211 scsi_proto_announce_sbuf(struct cam_ed *device, struct sbuf *sb)
3212 {
3213         scsi_print_inquiry_sbuf(sb, &device->inq_data);
3214 }
3215
3216 static void
3217 scsi_proto_announce(struct cam_ed *device)
3218 {
3219         scsi_print_inquiry(&device->inq_data);
3220 }
3221
3222 static void
3223 scsi_proto_denounce_sbuf(struct cam_ed *device, struct sbuf *sb)
3224 {
3225         scsi_print_inquiry_short_sbuf(sb, &device->inq_data);
3226 }
3227
3228 static void
3229 scsi_proto_denounce(struct cam_ed *device)
3230 {
3231         scsi_print_inquiry_short(&device->inq_data);
3232 }
3233
3234 static void
3235 scsi_proto_debug_out(union ccb *ccb)
3236 {
3237         char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
3238         struct cam_ed *device;
3239
3240         if (ccb->ccb_h.func_code != XPT_SCSI_IO)
3241                 return;
3242
3243         device = ccb->ccb_h.path->device;
3244         CAM_DEBUG(ccb->ccb_h.path,
3245             CAM_DEBUG_CDB,("%s. CDB: %s\n",
3246                 scsi_op_desc(scsiio_cdb_ptr(&ccb->csio)[0], &device->inq_data),
3247                 scsi_cdb_string(scsiio_cdb_ptr(&ccb->csio), cdb_str, sizeof(cdb_str))));
3248 }