sys/cam/scsi/scsi_xpt.c

   1 /*-
   2  * Implementation of the SCSI Transport
   3  *
   4  * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs.
   5  * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions, and the following disclaimer,
  13  *    without modification, immediately at the beginning of the file.
  14  * 2. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include <sys/param.h>
  34 #include <sys/bus.h>
  35 #include <sys/systm.h>
  36 #include <sys/types.h>
  37 #include <sys/malloc.h>
  38 #include <sys/kernel.h>
  39 #include <sys/time.h>
  40 #include <sys/conf.h>
  41 #include <sys/fcntl.h>
  42 #include <sys/md5.h>
  43 #include <sys/interrupt.h>
  44 #include <sys/sbuf.h>
  45
  46 #include <sys/lock.h>
  47 #include <sys/mutex.h>
  48 #include <sys/sysctl.h>
  49
  50 #include <cam/cam.h>
  51 #include <cam/cam_ccb.h>
  52 #include <cam/cam_queue.h>
  53 #include <cam/cam_periph.h>
  54 #include <cam/cam_sim.h>
  55 #include <cam/cam_xpt.h>
  56 #include <cam/cam_xpt_sim.h>
  57 #include <cam/cam_xpt_periph.h>
  58 #include <cam/cam_xpt_internal.h>
  59 #include <cam/cam_debug.h>
  60
  61 #include <cam/scsi/scsi_all.h>
  62 #include <cam/scsi/scsi_message.h>
  63 #include <cam/scsi/scsi_pass.h>
  64 #include <machine/stdarg.h>     /* for xpt_print below */
  65 #include "opt_cam.h"
  66
  67 struct scsi_quirk_entry {
  68         struct scsi_inquiry_pattern inq_pat;
  69         u_int8_t quirks;
  70 #define CAM_QUIRK_NOLUNS        0x01
  71 #define CAM_QUIRK_NOVPDS        0x02
  72 #define CAM_QUIRK_HILUNS        0x04
  73 #define CAM_QUIRK_NOHILUNS      0x08
  74 #define CAM_QUIRK_NORPTLUNS     0x10
  75         u_int mintags;
  76         u_int maxtags;
  77 };
  78 #define SCSI_QUIRK(dev) ((struct scsi_quirk_entry *)((dev)->quirk))
  79
  80 static int cam_srch_hi = 0;
  81 TUNABLE_INT("kern.cam.cam_srch_hi", &cam_srch_hi);
  82 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS);
  83 SYSCTL_PROC(_kern_cam, OID_AUTO, cam_srch_hi, CTLTYPE_INT|CTLFLAG_RW, 0, 0,
  84     sysctl_cam_search_luns, "I",
  85     "allow search above LUN 7 for SCSI3 and greater devices");
  86
  87 #define CAM_SCSI2_MAXLUN        8
  88 #define CAM_CAN_GET_SIMPLE_LUN(x, i)                            \
  89         ((((x)->luns[i].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==  \
  90         RPL_LUNDATA_ATYP_PERIPH) ||                             \
  91         (((x)->luns[i].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==   \
  92         RPL_LUNDATA_ATYP_FLAT))
  93 #define CAM_GET_SIMPLE_LUN(lp, i, lval)                                 \
  94         if (((lp)->luns[(i)].lundata[0] & RPL_LUNDATA_ATYP_MASK) ==     \
  95             RPL_LUNDATA_ATYP_PERIPH) {                                  \
  96                 (lval) = (lp)->luns[(i)].lundata[1];                    \
  97         } else {                                                        \
  98                 (lval) = (lp)->luns[(i)].lundata[0];                    \
  99                 (lval) &= RPL_LUNDATA_FLAT_LUN_MASK;                    \
 100                 (lval) <<= 8;                                           \
 101                 (lval) |=  (lp)->luns[(i)].lundata[1];                  \
 102         }
 103 /*
 104  * If we're not quirked to search <= the first 8 luns
 105  * and we are either quirked to search above lun 8,
 106  * or we're > SCSI-2 and we've enabled hilun searching,
 107  * or we're > SCSI-2 and the last lun was a success,
 108  * we can look for luns above lun 8.
 109  */
 110 #define CAN_SRCH_HI_SPARSE(dv)                                  \
 111   (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0)         \
 112   && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS)               \
 113   || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi)))
 114
 115 #define CAN_SRCH_HI_DENSE(dv)                                   \
 116   (((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_NOHILUNS) == 0)         \
 117   && ((SCSI_QUIRK(dv)->quirks & CAM_QUIRK_HILUNS)               \
 118   || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2)))
 119
 120 static periph_init_t probe_periph_init;
 121
 122 static struct periph_driver probe_driver =
 123 {
 124         probe_periph_init, "probe",
 125         TAILQ_HEAD_INITIALIZER(probe_driver.units), /* generation */ 0,
 126         CAM_PERIPH_DRV_EARLY
 127 };
 128
 129 PERIPHDRIVER_DECLARE(probe, probe_driver);
 130
 131 typedef enum {
 132         PROBE_TUR,
 133         PROBE_INQUIRY,  /* this counts as DV0 for Basic Domain Validation */
 134         PROBE_FULL_INQUIRY,
 135         PROBE_REPORT_LUNS,
 136         PROBE_MODE_SENSE,
 137         PROBE_SUPPORTED_VPD_LIST,
 138         PROBE_DEVICE_ID,
 139         PROBE_SERIAL_NUM,
 140         PROBE_TUR_FOR_NEGOTIATION,
 141         PROBE_INQUIRY_BASIC_DV1,
 142         PROBE_INQUIRY_BASIC_DV2,
 143         PROBE_DV_EXIT,
 144         PROBE_DONE,
 145         PROBE_INVALID
 146 } probe_action;
 147
 148 static char *probe_action_text[] = {
 149         "PROBE_TUR",
 150         "PROBE_INQUIRY",
 151         "PROBE_FULL_INQUIRY",
 152         "PROBE_REPORT_LUNS",
 153         "PROBE_MODE_SENSE",
 154         "PROBE_SUPPORTED_VPD_LIST",
 155         "PROBE_DEVICE_ID",
 156         "PROBE_SERIAL_NUM",
 157         "PROBE_TUR_FOR_NEGOTIATION",
 158         "PROBE_INQUIRY_BASIC_DV1",
 159         "PROBE_INQUIRY_BASIC_DV2",
 160         "PROBE_DV_EXIT",
 161         "PROBE_DONE",
 162         "PROBE_INVALID"
 163 };
 164
 165 #define PROBE_SET_ACTION(softc, newaction)      \
 166 do {                                                                    \
 167         char **text;                                                    \
 168         text = probe_action_text;                                       \
 169         CAM_DEBUG((softc)->periph->path, CAM_DEBUG_PROBE,               \
 170             ("Probe %s to %s\n", text[(softc)->action],                 \
 171             text[(newaction)]));                                        \
 172         (softc)->action = (newaction);                                  \
 173 } while(0)
 174
 175 typedef enum {
 176         PROBE_INQUIRY_CKSUM     = 0x01,
 177         PROBE_SERIAL_CKSUM      = 0x02,
 178         PROBE_NO_ANNOUNCE       = 0x04
 179 } probe_flags;
 180
 181 typedef struct {
 182         TAILQ_HEAD(, ccb_hdr) request_ccbs;
 183         probe_action    action;
 184         union ccb       saved_ccb;
 185         probe_flags     flags;
 186         MD5_CTX         context;
 187         u_int8_t        digest[16];
 188         struct cam_periph *periph;
 189 } probe_softc;
 190
 191 static const char quantum[] = "QUANTUM";
 192 static const char sony[] = "SONY";
 193 static const char west_digital[] = "WDIGTL";
 194 static const char samsung[] = "SAMSUNG";
 195 static const char seagate[] = "SEAGATE";
 196 static const char microp[] = "MICROP";
 197
 198 static struct scsi_quirk_entry scsi_quirk_table[] =
 199 {
 200         {
 201                 /* Reports QUEUE FULL for temporary resource shortages */
 202                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" },
 203                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 204         },
 205         {
 206                 /* Reports QUEUE FULL for temporary resource shortages */
 207                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" },
 208                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 209         },
 210         {
 211                 /* Reports QUEUE FULL for temporary resource shortages */
 212                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" },
 213                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 214         },
 215         {
 216                 /* Broken tagged queuing drive */
 217                 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" },
 218                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 219         },
 220         {
 221                 /* Broken tagged queuing drive */
 222                 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" },
 223                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 224         },
 225         {
 226                 /* Broken tagged queuing drive */
 227                 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" },
 228                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 229         },
 230         {
 231                 /*
 232                  * Unfortunately, the Quantum Atlas III has the same
 233                  * problem as the Atlas II drives above.
 234                  * Reported by: "Johan Granlund" <johan@granlund.nu>
 235                  *
 236                  * For future reference, the drive with the problem was:
 237                  * QUANTUM QM39100TD-SW N1B0
 238                  *
 239                  * It's possible that Quantum will fix the problem in later
 240                  * firmware revisions.  If that happens, the quirk entry
 241                  * will need to be made specific to the firmware revisions
 242                  * with the problem.
 243                  *
 244                  */
 245                 /* Reports QUEUE FULL for temporary resource shortages */
 246                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" },
 247                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 248         },
 249         {
 250                 /*
 251                  * 18 Gig Atlas III, same problem as the 9G version.
 252                  * Reported by: Andre Albsmeier
 253                  *              <andre.albsmeier@mchp.siemens.de>
 254                  *
 255                  * For future reference, the drive with the problem was:
 256                  * QUANTUM QM318000TD-S N491
 257                  */
 258                 /* Reports QUEUE FULL for temporary resource shortages */
 259                 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" },
 260                 /*quirks*/0, /*mintags*/24, /*maxtags*/32
 261         },
 262         {
 263                 /*
 264                  * Broken tagged queuing drive
 265                  * Reported by: Bret Ford <bford@uop.cs.uop.edu>
 266                  *         and: Martin Renters <martin@tdc.on.ca>
 267                  */
 268                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" },
 269                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 270         },
 271                 /*
 272                  * The Seagate Medalist Pro drives have very poor write
 273                  * performance with anything more than 2 tags.
 274                  *
 275                  * Reported by:  Paul van der Zwan <paulz@trantor.xs4all.nl>
 276                  * Drive:  <SEAGATE ST36530N 1444>
 277                  *
 278                  * Reported by:  Jeremy Lea <reg@shale.csir.co.za>
 279                  * Drive:  <SEAGATE ST34520W 1281>
 280                  *
 281                  * No one has actually reported that the 9G version
 282                  * (ST39140*) of the Medalist Pro has the same problem, but
 283                  * we're assuming that it does because the 4G and 6.5G
 284                  * versions of the drive are broken.
 285                  */
 286         {
 287                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"},
 288                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 289         },
 290         {
 291                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"},
 292                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 293         },
 294         {
 295                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"},
 296                 /*quirks*/0, /*mintags*/2, /*maxtags*/2
 297         },
 298         {
 299                 /*
 300                  * Experiences command timeouts under load with a
 301                  * tag count higher than 55.
 302                  */
 303                 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST3146855LW", "*"},
 304                 /*quirks*/0, /*mintags*/2, /*maxtags*/55
 305         },
 306         {
 307                 /*
 308                  * Slow when tagged queueing is enabled.  Write performance
 309                  * steadily drops off with more and more concurrent
 310                  * transactions.  Best sequential write performance with
 311                  * tagged queueing turned off and write caching turned on.
 312                  *
 313                  * PR:  kern/10398
 314                  * Submitted by:  Hideaki Okada <hokada@isl.melco.co.jp>
 315                  * Drive:  DCAS-34330 w/ "S65A" firmware.
 316                  *
 317                  * The drive with the problem had the "S65A" firmware
 318                  * revision, and has also been reported (by Stephen J.
 319                  * Roznowski <sjr@home.net>) for a drive with the "S61A"
 320                  * firmware revision.
 321                  *
 322                  * Although no one has reported problems with the 2 gig
 323                  * version of the DCAS drive, the assumption is that it
 324                  * has the same problems as the 4 gig version.  Therefore
 325                  * this quirk entries disables tagged queueing for all
 326                  * DCAS drives.
 327                  */
 328                 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" },
 329                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 330         },
 331         {
 332                 /* Broken tagged queuing drive */
 333                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" },
 334                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 335         },
 336         {
 337                 /* Broken tagged queuing drive */
 338                 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" },
 339                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 340         },
 341         {
 342                 /* This does not support other than LUN 0 */
 343                 { T_DIRECT, SIP_MEDIA_FIXED, "VMware*", "*", "*" },
 344                 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
 345         },
 346         {
 347                 /*
 348                  * Broken tagged queuing drive.
 349                  * Submitted by:
 350                  * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp>
 351                  * in PR kern/9535
 352                  */
 353                 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" },
 354                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 355         },
 356         {
 357                 /*
 358                  * Slow when tagged queueing is enabled. (1.5MB/sec versus
 359                  * 8MB/sec.)
 360                  * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
 361                  * Best performance with these drives is achieved with
 362                  * tagged queueing turned off, and write caching turned on.
 363                  */
 364                 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" },
 365                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 366         },
 367         {
 368                 /*
 369                  * Slow when tagged queueing is enabled. (1.5MB/sec versus
 370                  * 8MB/sec.)
 371                  * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
 372                  * Best performance with these drives is achieved with
 373                  * tagged queueing turned off, and write caching turned on.
 374                  */
 375                 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" },
 376                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 377         },
 378         {
 379                 /*
 380                  * Doesn't handle queue full condition correctly,
 381                  * so we need to limit maxtags to what the device
 382                  * can handle instead of determining this automatically.
 383                  */
 384                 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" },
 385                 /*quirks*/0, /*mintags*/2, /*maxtags*/32
 386         },
 387         {
 388                 /* Really only one LUN */
 389                 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" },
 390                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 391         },
 392         {
 393                 /* I can't believe we need a quirk for DPT volumes. */
 394                 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" },
 395                 CAM_QUIRK_NOLUNS,
 396                 /*mintags*/0, /*maxtags*/255
 397         },
 398         {
 399                 /*
 400                  * Many Sony CDROM drives don't like multi-LUN probing.
 401                  */
 402                 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" },
 403                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 404         },
 405         {
 406                 /*
 407                  * This drive doesn't like multiple LUN probing.
 408                  * Submitted by:  Parag Patel <parag@cgt.com>
 409                  */
 410                 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R   CDU9*", "*" },
 411                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 412         },
 413         {
 414                 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
 415                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 416         },
 417         {
 418                 /*
 419                  * The 8200 doesn't like multi-lun probing, and probably
 420                  * don't like serial number requests either.
 421                  */
 422                 {
 423                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
 424                         "EXB-8200*", "*"
 425                 },
 426                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 427         },
 428         {
 429                 /*
 430                  * Let's try the same as above, but for a drive that says
 431                  * it's an IPL-6860 but is actually an EXB 8200.
 432                  */
 433                 {
 434                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE",
 435                         "IPL-6860*", "*"
 436                 },
 437                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 438         },
 439         {
 440                 /*
 441                  * These Hitachi drives don't like multi-lun probing.
 442                  * The PR submitter has a DK319H, but says that the Linux
 443                  * kernel has a similar work-around for the DK312 and DK314,
 444                  * so all DK31* drives are quirked here.
 445                  * PR:            misc/18793
 446                  * Submitted by:  Paul Haddad <paul@pth.com>
 447                  */
 448                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" },
 449                 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255
 450         },
 451         {
 452                 /*
 453                  * The Hitachi CJ series with J8A8 firmware apparantly has
 454                  * problems with tagged commands.
 455                  * PR: 23536
 456                  * Reported by: amagai@nue.org
 457                  */
 458                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" },
 459                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 460         },
 461         {
 462                 /*
 463                  * These are the large storage arrays.
 464                  * Submitted by:  William Carrel <william.carrel@infospace.com>
 465                  */
 466                 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" },
 467                 CAM_QUIRK_HILUNS, 2, 1024
 468         },
 469         {
 470                 /*
 471                  * This old revision of the TDC3600 is also SCSI-1, and
 472                  * hangs upon serial number probing.
 473                  */
 474                 {
 475                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
 476                         " TDC 3600", "U07:"
 477                 },
 478                 CAM_QUIRK_NOVPDS, /*mintags*/0, /*maxtags*/0
 479         },
 480         {
 481                 /*
 482                  * Would repond to all LUNs if asked for.
 483                  */
 484                 {
 485                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER",
 486                         "CP150", "*"
 487                 },
 488                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 489         },
 490         {
 491                 /*
 492                  * Would repond to all LUNs if asked for.
 493                  */
 494                 {
 495                         T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
 496                         "96X2*", "*"
 497                 },
 498                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 499         },
 500         {
 501                 /* Submitted by: Matthew Dodd <winter@jurai.net> */
 502                 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" },
 503                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 504         },
 505         {
 506                 /* Submitted by: Matthew Dodd <winter@jurai.net> */
 507                 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" },
 508                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 509         },
 510         {
 511                 /* TeraSolutions special settings for TRC-22 RAID */
 512                 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" },
 513                   /*quirks*/0, /*mintags*/55, /*maxtags*/255
 514         },
 515         {
 516                 /* Veritas Storage Appliance */
 517                 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" },
 518                   CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024
 519         },
 520         {
 521                 /*
 522                  * Would respond to all LUNs.  Device type and removable
 523                  * flag are jumper-selectable.
 524                  */
 525                 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix",
 526                   "Tahiti 1", "*"
 527                 },
 528                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 529         },
 530         {
 531                 /* EasyRAID E5A aka. areca ARC-6010 */
 532                 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" },
 533                   CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255
 534         },
 535         {
 536                 { T_ENCLOSURE, SIP_MEDIA_FIXED, "DP", "BACKPLANE", "*" },
 537                 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 538         },
 539         {
 540                 { T_DIRECT, SIP_MEDIA_REMOVABLE, "Garmin", "*", "*" },
 541                 CAM_QUIRK_NORPTLUNS, /*mintags*/2, /*maxtags*/255
 542         },
 543         {
 544                 /* Default tagged queuing parameters for all devices */
 545                 {
 546                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 547                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 548                 },
 549                 /*quirks*/0, /*mintags*/2, /*maxtags*/255
 550         },
 551 };
 552
 553 static const int scsi_quirk_table_size =
 554         sizeof(scsi_quirk_table) / sizeof(*scsi_quirk_table);
 555
 556 static cam_status       proberegister(struct cam_periph *periph,
 557                                       void *arg);
 558 static void      probeschedule(struct cam_periph *probe_periph);
 559 static void      probestart(struct cam_periph *periph, union ccb *start_ccb);
 560 static void      proberequestdefaultnegotiation(struct cam_periph *periph);
 561 static int       proberequestbackoff(struct cam_periph *periph,
 562                                      struct cam_ed *device);
 563 static void      probedone(struct cam_periph *periph, union ccb *done_ccb);
 564 static int       probe_strange_rpl_data(struct scsi_report_luns_data *rp,
 565                                         uint32_t maxlun);
 566 static void      probe_purge_old(struct cam_path *path,
 567                                  struct scsi_report_luns_data *new);
 568 static void      probecleanup(struct cam_periph *periph);
 569 static void      scsi_find_quirk(struct cam_ed *device);
 570 static void      scsi_scan_bus(struct cam_periph *periph, union ccb *ccb);
 571 static void      scsi_scan_lun(struct cam_periph *periph,
 572                                struct cam_path *path, cam_flags flags,
 573                                union ccb *ccb);
 574 static void      xptscandone(struct cam_periph *periph, union ccb *done_ccb);
 575 static struct cam_ed *
 576                  scsi_alloc_device(struct cam_eb *bus, struct cam_et *target,
 577                                    lun_id_t lun_id);
 578 static void      scsi_devise_transport(struct cam_path *path);
 579 static void      scsi_set_transfer_settings(struct ccb_trans_settings *cts,
 580                                             struct cam_ed *device,
 581                                             int async_update);
 582 static void      scsi_toggle_tags(struct cam_path *path);
 583 static void      scsi_dev_async(u_int32_t async_code,
 584                                 struct cam_eb *bus,
 585                                 struct cam_et *target,
 586                                 struct cam_ed *device,
 587                                 void *async_arg);
 588 static void      scsi_action(union ccb *start_ccb);
 589 static void      scsi_announce_periph(struct cam_periph *periph);
 590
 591 static struct xpt_xport scsi_xport = {
 592         .alloc_device = scsi_alloc_device,
 593         .action = scsi_action,
 594         .async = scsi_dev_async,
 595         .announce = scsi_announce_periph,
 596 };
 597
 598 struct xpt_xport *
 599 scsi_get_xport(void)
 600 {
 601         return (&scsi_xport);
 602 }
 603
 604 static void
 605 probe_periph_init()
 606 {
 607 }
 608
 609 static cam_status
 610 proberegister(struct cam_periph *periph, void *arg)
 611 {
 612         union ccb *request_ccb; /* CCB representing the probe request */
 613         cam_status status;
 614         probe_softc *softc;
 615
 616         request_ccb = (union ccb *)arg;
 617         if (request_ccb == NULL) {
 618                 printf("proberegister: no probe CCB, "
 619                        "can't register device\n");
 620                 return(CAM_REQ_CMP_ERR);
 621         }
 622
 623         softc = (probe_softc *)malloc(sizeof(*softc), M_CAMXPT, M_NOWAIT);
 624
 625         if (softc == NULL) {
 626                 printf("proberegister: Unable to probe new device. "
 627                        "Unable to allocate softc\n");
 628                 return(CAM_REQ_CMP_ERR);
 629         }
 630         TAILQ_INIT(&softc->request_ccbs);
 631         TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
 632                           periph_links.tqe);
 633         softc->flags = 0;
 634         periph->softc = softc;
 635         softc->periph = periph;
 636         softc->action = PROBE_INVALID;
 637         status = cam_periph_acquire(periph);
 638         if (status != CAM_REQ_CMP) {
 639                 return (status);
 640         }
 641         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe started\n"));
 642
 643         /*
 644          * Ensure we've waited at least a bus settle
 645          * delay before attempting to probe the device.
 646          * For HBAs that don't do bus resets, this won't make a difference.
 647          */
 648         cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset,
 649                                       scsi_delay);
 650         probeschedule(periph);
 651         return(CAM_REQ_CMP);
 652 }
 653
 654 static void
 655 probeschedule(struct cam_periph *periph)
 656 {
 657         struct ccb_pathinq cpi;
 658         union ccb *ccb;
 659         probe_softc *softc;
 660
 661         softc = (probe_softc *)periph->softc;
 662         ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
 663
 664         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
 665         cpi.ccb_h.func_code = XPT_PATH_INQ;
 666         xpt_action((union ccb *)&cpi);
 667
 668         /*
 669          * If a device has gone away and another device, or the same one,
 670          * is back in the same place, it should have a unit attention
 671          * condition pending.  It will not report the unit attention in
 672          * response to an inquiry, which may leave invalid transfer
 673          * negotiations in effect.  The TUR will reveal the unit attention
 674          * condition.  Only send the TUR for lun 0, since some devices
 675          * will get confused by commands other than inquiry to non-existent
 676          * luns.  If you think a device has gone away start your scan from
 677          * lun 0.  This will insure that any bogus transfer settings are
 678          * invalidated.
 679          *
 680          * If we haven't seen the device before and the controller supports
 681          * some kind of transfer negotiation, negotiate with the first
 682          * sent command if no bus reset was performed at startup.  This
 683          * ensures that the device is not confused by transfer negotiation
 684          * settings left over by loader or BIOS action.
 685          */
 686         if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 687          && (ccb->ccb_h.target_lun == 0)) {
 688                 PROBE_SET_ACTION(softc, PROBE_TUR);
 689         } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0
 690               && (cpi.hba_misc & PIM_NOBUSRESET) != 0) {
 691                 proberequestdefaultnegotiation(periph);
 692                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
 693         } else {
 694                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
 695         }
 696
 697         if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
 698                 softc->flags |= PROBE_NO_ANNOUNCE;
 699         else
 700                 softc->flags &= ~PROBE_NO_ANNOUNCE;
 701
 702         xpt_schedule(periph, CAM_PRIORITY_XPT);
 703 }
 704
 705 static void
 706 probestart(struct cam_periph *periph, union ccb *start_ccb)
 707 {
 708         /* Probe the device that our peripheral driver points to */
 709         struct ccb_scsiio *csio;
 710         probe_softc *softc;
 711
 712         CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
 713
 714         softc = (probe_softc *)periph->softc;
 715         csio = &start_ccb->csio;
 716 again:
 717
 718         switch (softc->action) {
 719         case PROBE_TUR:
 720         case PROBE_TUR_FOR_NEGOTIATION:
 721         case PROBE_DV_EXIT:
 722         {
 723                 scsi_test_unit_ready(csio,
 724                                      /*retries*/4,
 725                                      probedone,
 726                                      MSG_SIMPLE_Q_TAG,
 727                                      SSD_FULL_SIZE,
 728                                      /*timeout*/60000);
 729                 break;
 730         }
 731         case PROBE_INQUIRY:
 732         case PROBE_FULL_INQUIRY:
 733         case PROBE_INQUIRY_BASIC_DV1:
 734         case PROBE_INQUIRY_BASIC_DV2:
 735         {
 736                 u_int inquiry_len;
 737                 struct scsi_inquiry_data *inq_buf;
 738
 739                 inq_buf = &periph->path->device->inq_data;
 740
 741                 /*
 742                  * If the device is currently configured, we calculate an
 743                  * MD5 checksum of the inquiry data, and if the serial number
 744                  * length is greater than 0, add the serial number data
 745                  * into the checksum as well.  Once the inquiry and the
 746                  * serial number check finish, we attempt to figure out
 747                  * whether we still have the same device.
 748                  */
 749                 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
 750
 751                         MD5Init(&softc->context);
 752                         MD5Update(&softc->context, (unsigned char *)inq_buf,
 753                                   sizeof(struct scsi_inquiry_data));
 754                         softc->flags |= PROBE_INQUIRY_CKSUM;
 755                         if (periph->path->device->serial_num_len > 0) {
 756                                 MD5Update(&softc->context,
 757                                           periph->path->device->serial_num,
 758                                           periph->path->device->serial_num_len);
 759                                 softc->flags |= PROBE_SERIAL_CKSUM;
 760                         }
 761                         MD5Final(softc->digest, &softc->context);
 762                 }
 763
 764                 if (softc->action == PROBE_INQUIRY)
 765                         inquiry_len = SHORT_INQUIRY_LENGTH;
 766                 else
 767                         inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf);
 768
 769                 /*
 770                  * Some parallel SCSI devices fail to send an
 771                  * ignore wide residue message when dealing with
 772                  * odd length inquiry requests.  Round up to be
 773                  * safe.
 774                  */
 775                 inquiry_len = roundup2(inquiry_len, 2);
 776
 777                 if (softc->action == PROBE_INQUIRY_BASIC_DV1
 778                  || softc->action == PROBE_INQUIRY_BASIC_DV2) {
 779                         inq_buf = malloc(inquiry_len, M_CAMXPT, M_NOWAIT);
 780                 }
 781                 if (inq_buf == NULL) {
 782                         xpt_print(periph->path, "malloc failure- skipping Basic"
 783                             "Domain Validation\n");
 784                         PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
 785                         scsi_test_unit_ready(csio,
 786                                              /*retries*/4,
 787                                              probedone,
 788                                              MSG_SIMPLE_Q_TAG,
 789                                              SSD_FULL_SIZE,
 790                                              /*timeout*/60000);
 791                         break;
 792                 }
 793                 scsi_inquiry(csio,
 794                              /*retries*/4,
 795                              probedone,
 796                              MSG_SIMPLE_Q_TAG,
 797                              (u_int8_t *)inq_buf,
 798                              inquiry_len,
 799                              /*evpd*/FALSE,
 800                              /*page_code*/0,
 801                              SSD_MIN_SIZE,
 802                              /*timeout*/60 * 1000);
 803                 break;
 804         }
 805         case PROBE_REPORT_LUNS:
 806         {
 807                 void *rp;
 808
 809                 rp = malloc(periph->path->target->rpl_size,
 810                     M_CAMXPT, M_NOWAIT | M_ZERO);
 811                 if (rp == NULL) {
 812                         struct scsi_inquiry_data *inq_buf;
 813                         inq_buf = &periph->path->device->inq_data;
 814                         xpt_print(periph->path,
 815                             "Unable to alloc report luns storage\n");
 816                         if (INQ_DATA_TQ_ENABLED(inq_buf))
 817                                 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
 818                         else
 819                                 PROBE_SET_ACTION(softc,
 820                                     PROBE_SUPPORTED_VPD_LIST);
 821                         goto again;
 822                 }
 823                 scsi_report_luns(csio, 5, probedone, MSG_SIMPLE_Q_TAG,
 824                     RPL_REPORT_DEFAULT, rp, periph->path->target->rpl_size,
 825                     SSD_FULL_SIZE, 60000); break;
 826                 break;
 827         }
 828         case PROBE_MODE_SENSE:
 829         {
 830                 void  *mode_buf;
 831                 int    mode_buf_len;
 832
 833                 mode_buf_len = sizeof(struct scsi_mode_header_6)
 834                              + sizeof(struct scsi_mode_blk_desc)
 835                              + sizeof(struct scsi_control_page);
 836                 mode_buf = malloc(mode_buf_len, M_CAMXPT, M_NOWAIT);
 837                 if (mode_buf != NULL) {
 838                         scsi_mode_sense(csio,
 839                                         /*retries*/4,
 840                                         probedone,
 841                                         MSG_SIMPLE_Q_TAG,
 842                                         /*dbd*/FALSE,
 843                                         SMS_PAGE_CTRL_CURRENT,
 844                                         SMS_CONTROL_MODE_PAGE,
 845                                         mode_buf,
 846                                         mode_buf_len,
 847                                         SSD_FULL_SIZE,
 848                                         /*timeout*/60000);
 849                         break;
 850                 }
 851                 xpt_print(periph->path, "Unable to mode sense control page - "
 852                     "malloc failure\n");
 853                 PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
 854         }
 855         /* FALLTHROUGH */
 856         case PROBE_SUPPORTED_VPD_LIST:
 857         {
 858                 struct scsi_vpd_supported_page_list *vpd_list;
 859                 struct cam_ed *device;
 860
 861                 vpd_list = NULL;
 862                 device = periph->path->device;
 863
 864                 if ((SCSI_QUIRK(device)->quirks & CAM_QUIRK_NOVPDS) == 0)
 865                         vpd_list = malloc(sizeof(*vpd_list), M_CAMXPT,
 866                             M_NOWAIT | M_ZERO);
 867
 868                 if (vpd_list != NULL) {
 869                         scsi_inquiry(csio,
 870                                      /*retries*/4,
 871                                      probedone,
 872                                      MSG_SIMPLE_Q_TAG,
 873                                      (u_int8_t *)vpd_list,
 874                                      sizeof(*vpd_list),
 875                                      /*evpd*/TRUE,
 876                                      SVPD_SUPPORTED_PAGE_LIST,
 877                                      SSD_MIN_SIZE,
 878                                      /*timeout*/60 * 1000);
 879                         break;
 880                 }
 881                 /*
 882                  * We'll have to do without, let our probedone
 883                  * routine finish up for us.
 884                  */
 885                 start_ccb->csio.data_ptr = NULL;
 886                 cam_freeze_devq(periph->path);
 887                 probedone(periph, start_ccb);
 888                 return;
 889         }
 890         case PROBE_DEVICE_ID:
 891         {
 892                 struct scsi_vpd_device_id *devid;
 893
 894                 devid = NULL;
 895                 if (scsi_vpd_supported_page(periph, SVPD_DEVICE_ID))
 896                         devid = malloc(SVPD_DEVICE_ID_MAX_SIZE, M_CAMXPT,
 897                             M_NOWAIT | M_ZERO);
 898
 899                 if (devid != NULL) {
 900                         scsi_inquiry(csio,
 901                                      /*retries*/4,
 902                                      probedone,
 903                                      MSG_SIMPLE_Q_TAG,
 904                                      (uint8_t *)devid,
 905                                      SVPD_DEVICE_ID_MAX_SIZE,
 906                                      /*evpd*/TRUE,
 907                                      SVPD_DEVICE_ID,
 908                                      SSD_MIN_SIZE,
 909                                      /*timeout*/60 * 1000);
 910                         break;
 911                 }
 912                 /*
 913                  * We'll have to do without, let our probedone
 914                  * routine finish up for us.
 915                  */
 916                 start_ccb->csio.data_ptr = NULL;
 917                 cam_freeze_devq(periph->path);
 918                 probedone(periph, start_ccb);
 919                 return;
 920         }
 921         case PROBE_SERIAL_NUM:
 922         {
 923                 struct scsi_vpd_unit_serial_number *serial_buf;
 924                 struct cam_ed* device;
 925
 926                 serial_buf = NULL;
 927                 device = periph->path->device;
 928                 if (device->serial_num != NULL) {
 929                         free(device->serial_num, M_CAMXPT);
 930                         device->serial_num = NULL;
 931                         device->serial_num_len = 0;
 932                 }
 933
 934                 if (scsi_vpd_supported_page(periph, SVPD_UNIT_SERIAL_NUMBER))
 935                         serial_buf = (struct scsi_vpd_unit_serial_number *)
 936                                 malloc(sizeof(*serial_buf), M_CAMXPT,
 937                                     M_NOWAIT|M_ZERO);
 938
 939                 if (serial_buf != NULL) {
 940                         scsi_inquiry(csio,
 941                                      /*retries*/4,
 942                                      probedone,
 943                                      MSG_SIMPLE_Q_TAG,
 944                                      (u_int8_t *)serial_buf,
 945                                      sizeof(*serial_buf),
 946                                      /*evpd*/TRUE,
 947                                      SVPD_UNIT_SERIAL_NUMBER,
 948                                      SSD_MIN_SIZE,
 949                                      /*timeout*/60 * 1000);
 950                         break;
 951                 }
 952                 /*
 953                  * We'll have to do without, let our probedone
 954                  * routine finish up for us.
 955                  */
 956                 start_ccb->csio.data_ptr = NULL;
 957                 cam_freeze_devq(periph->path);
 958                 probedone(periph, start_ccb);
 959                 return;
 960         }
 961         default:
 962                 panic("probestart: invalid action state 0x%x\n", softc->action);
 963         }
 964         start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
 965         xpt_action(start_ccb);
 966 }
 967
 968 static void
 969 proberequestdefaultnegotiation(struct cam_periph *periph)
 970 {
 971         struct ccb_trans_settings cts;
 972
 973         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
 974         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 975         cts.type = CTS_TYPE_USER_SETTINGS;
 976         xpt_action((union ccb *)&cts);
 977         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
 978                 return;
 979         }
 980         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
 981         cts.type = CTS_TYPE_CURRENT_SETTINGS;
 982         xpt_action((union ccb *)&cts);
 983 }
 984
 985 /*
 986  * Backoff Negotiation Code- only pertinent for SPI devices.
 987  */
 988 static int
 989 proberequestbackoff(struct cam_periph *periph, struct cam_ed *device)
 990 {
 991         struct ccb_trans_settings cts;
 992         struct ccb_trans_settings_spi *spi;
 993
 994         memset(&cts, 0, sizeof (cts));
 995         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
 996         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 997         cts.type = CTS_TYPE_CURRENT_SETTINGS;
 998         xpt_action((union ccb *)&cts);
 999         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1000                 if (bootverbose) {
1001                         xpt_print(periph->path,
1002                             "failed to get current device settings\n");
1003                 }
1004                 return (0);
1005         }
1006         if (cts.transport != XPORT_SPI) {
1007                 if (bootverbose) {
1008                         xpt_print(periph->path, "not SPI transport\n");
1009                 }
1010                 return (0);
1011         }
1012         spi = &cts.xport_specific.spi;
1013
1014         /*
1015          * We cannot renegotiate sync rate if we don't have one.
1016          */
1017         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
1018                 if (bootverbose) {
1019                         xpt_print(periph->path, "no sync rate known\n");
1020                 }
1021                 return (0);
1022         }
1023
1024         /*
1025          * We'll assert that we don't have to touch PPR options- the
1026          * SIM will see what we do with period and offset and adjust
1027          * the PPR options as appropriate.
1028          */
1029
1030         /*
1031          * A sync rate with unknown or zero offset is nonsensical.
1032          * A sync period of zero means Async.
1033          */
1034         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0
1035          || spi->sync_offset == 0 || spi->sync_period == 0) {
1036                 if (bootverbose) {
1037                         xpt_print(periph->path, "no sync rate available\n");
1038                 }
1039                 return (0);
1040         }
1041
1042         if (device->flags & CAM_DEV_DV_HIT_BOTTOM) {
1043                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1044                     ("hit async: giving up on DV\n"));
1045                 return (0);
1046         }
1047
1048
1049         /*
1050          * Jump sync_period up by one, but stop at 5MHz and fall back to Async.
1051          * We don't try to remember 'last' settings to see if the SIM actually
1052          * gets into the speed we want to set. We check on the SIM telling
1053          * us that a requested speed is bad, but otherwise don't try and
1054          * check the speed due to the asynchronous and handshake nature
1055          * of speed setting.
1056          */
1057         spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET;
1058         for (;;) {
1059                 spi->sync_period++;
1060                 if (spi->sync_period >= 0xf) {
1061                         spi->sync_period = 0;
1062                         spi->sync_offset = 0;
1063                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1064                             ("setting to async for DV\n"));
1065                         /*
1066                          * Once we hit async, we don't want to try
1067                          * any more settings.
1068                          */
1069                         device->flags |= CAM_DEV_DV_HIT_BOTTOM;
1070                 } else if (bootverbose) {
1071                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1072                             ("DV: period 0x%x\n", spi->sync_period));
1073                         printf("setting period to 0x%x\n", spi->sync_period);
1074                 }
1075                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1076                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1077                 xpt_action((union ccb *)&cts);
1078                 if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP) {
1079                         break;
1080                 }
1081                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1082                     ("DV: failed to set period 0x%x\n", spi->sync_period));
1083                 if (spi->sync_period == 0) {
1084                         return (0);
1085                 }
1086         }
1087         return (1);
1088 }
1089
1090 #define CCB_COMPLETED_OK(ccb) (((ccb).status & CAM_STATUS_MASK) == CAM_REQ_CMP)
1091
1092 static void
1093 probedone(struct cam_periph *periph, union ccb *done_ccb)
1094 {
1095         probe_softc *softc;
1096         struct cam_path *path;
1097         u_int32_t  priority;
1098
1099         CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
1100
1101         softc = (probe_softc *)periph->softc;
1102         path = done_ccb->ccb_h.path;
1103         priority = done_ccb->ccb_h.pinfo.priority;
1104
1105         switch (softc->action) {
1106         case PROBE_TUR:
1107         {
1108                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1109
1110                         if (cam_periph_error(done_ccb, 0,
1111                                              SF_NO_PRINT, NULL) == ERESTART) {
1112 out:
1113                                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1114                                 cam_release_devq(path, 0, 0, 0, FALSE);
1115                                 return;
1116                         }
1117                         else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1118                                 /* Don't wedge the queue */
1119                                 xpt_release_devq(done_ccb->ccb_h.path,
1120                                                  /*count*/1,
1121                                                  /*run_queue*/TRUE);
1122                 }
1123                 PROBE_SET_ACTION(softc, PROBE_INQUIRY);
1124                 xpt_release_ccb(done_ccb);
1125                 xpt_schedule(periph, priority);
1126                 goto out;
1127         }
1128         case PROBE_INQUIRY:
1129         case PROBE_FULL_INQUIRY:
1130         {
1131                 if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
1132                         struct scsi_inquiry_data *inq_buf;
1133                         u_int8_t periph_qual;
1134
1135                         path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
1136                         inq_buf = &path->device->inq_data;
1137
1138                         periph_qual = SID_QUAL(inq_buf);
1139
1140                         if (periph_qual == SID_QUAL_LU_CONNECTED) {
1141                                 u_int8_t len;
1142
1143                                 /*
1144                                  * We conservatively request only
1145                                  * SHORT_INQUIRY_LEN bytes of inquiry
1146                                  * information during our first try
1147                                  * at sending an INQUIRY. If the device
1148                                  * has more information to give,
1149                                  * perform a second request specifying
1150                                  * the amount of information the device
1151                                  * is willing to give.
1152                                  */
1153                                 len = inq_buf->additional_length
1154                                     + offsetof(struct scsi_inquiry_data,
1155                                                additional_length) + 1;
1156                                 if (softc->action == PROBE_INQUIRY
1157                                     && len > SHORT_INQUIRY_LENGTH) {
1158                                         PROBE_SET_ACTION(softc, PROBE_FULL_INQUIRY);
1159                                         xpt_release_ccb(done_ccb);
1160                                         xpt_schedule(periph, priority);
1161                                         goto out;
1162                                 }
1163
1164                                 scsi_find_quirk(path->device);
1165
1166                                 scsi_devise_transport(path);
1167
1168                                 if (path->device->lun_id == 0 &&
1169                                     SID_ANSI_REV(inq_buf) > SCSI_REV_SPC2 &&
1170                                     (SCSI_QUIRK(path->device)->quirks &
1171                                      CAM_QUIRK_NORPTLUNS) == 0) {
1172                                         PROBE_SET_ACTION(softc,
1173                                             PROBE_REPORT_LUNS);
1174                                         /*
1175                                          * Start with room for *one* lun.
1176                                          */
1177                                         periph->path->target->rpl_size = 16;
1178                                 } else if (INQ_DATA_TQ_ENABLED(inq_buf))
1179                                         PROBE_SET_ACTION(softc,
1180                                             PROBE_MODE_SENSE);
1181                                 else
1182                                         PROBE_SET_ACTION(softc,
1183                                             PROBE_SUPPORTED_VPD_LIST);
1184
1185                                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1186                                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1187                                         xpt_acquire_device(path->device);
1188                                 }
1189                                 xpt_release_ccb(done_ccb);
1190                                 xpt_schedule(periph, priority);
1191                                 goto out;
1192                         } else if (path->device->lun_id == 0 &&
1193                             SID_ANSI_REV(inq_buf) > SCSI_REV_SPC2 &&
1194                             (SCSI_QUIRK(path->device)->quirks &
1195                              CAM_QUIRK_NORPTLUNS) == 0) {
1196                                 if (path->device->flags &
1197                                     CAM_DEV_UNCONFIGURED) {
1198                                         path->device->flags &=
1199                                             ~CAM_DEV_UNCONFIGURED;
1200                                         xpt_acquire_device(path->device);
1201                                 }
1202                                 PROBE_SET_ACTION(softc, PROBE_REPORT_LUNS);
1203                                 periph->path->target->rpl_size = 16;
1204                                 xpt_release_ccb(done_ccb);
1205                                 xpt_schedule(periph, priority);
1206                                 goto out;
1207                         }
1208                 } else if (cam_periph_error(done_ccb, 0,
1209                                             done_ccb->ccb_h.target_lun > 0
1210                                             ? SF_RETRY_UA|SF_QUIET_IR
1211                                             : SF_RETRY_UA,
1212                                             &softc->saved_ccb) == ERESTART) {
1213                         goto out;
1214                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1215                         /* Don't wedge the queue */
1216                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1217                                          /*run_queue*/TRUE);
1218                 }
1219                 /*
1220                  * If we get to this point, we got an error status back
1221                  * from the inquiry and the error status doesn't require
1222                  * automatically retrying the command.  Therefore, the
1223                  * inquiry failed.  If we had inquiry information before
1224                  * for this device, but this latest inquiry command failed,
1225                  * the device has probably gone away.  If this device isn't
1226                  * already marked unconfigured, notify the peripheral
1227                  * drivers that this device is no more.
1228                  */
1229                 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
1230                         /* Send the async notification. */
1231                         xpt_async(AC_LOST_DEVICE, path, NULL);
1232                 PROBE_SET_ACTION(softc, PROBE_INVALID);
1233
1234                 xpt_release_ccb(done_ccb);
1235                 break;
1236         }
1237         case PROBE_REPORT_LUNS:
1238         {
1239                 struct ccb_scsiio *csio;
1240                 struct scsi_report_luns_data *lp;
1241                 u_int nlun, maxlun;
1242
1243                 csio = &done_ccb->csio;
1244
1245                 lp = (struct scsi_report_luns_data *)csio->data_ptr;
1246                 nlun = scsi_4btoul(lp->length) / 8;
1247                 maxlun = (csio->dxfer_len / 8) - 1;
1248
1249                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1250                         if (cam_periph_error(done_ccb, 0,
1251                             done_ccb->ccb_h.target_lun > 0 ?
1252                             SF_RETRY_UA|SF_QUIET_IR : SF_RETRY_UA,
1253                             &softc->saved_ccb) == ERESTART) {
1254                                 goto out;
1255                         }
1256                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1257                                 xpt_release_devq(done_ccb->ccb_h.path, 1,
1258                                     TRUE);
1259                         }
1260                         free(lp, M_CAMXPT);
1261                         lp = NULL;
1262                 } else if (nlun > maxlun) {
1263                         /*
1264                          * Reallocate and retry to cover all luns
1265                          */
1266                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1267                             ("Probe: reallocating REPORT_LUNS for %u luns\n",
1268                              nlun));
1269                         free(lp, M_CAMXPT);
1270                         path->target->rpl_size = (nlun << 3) + 8;
1271                         xpt_release_ccb(done_ccb);
1272                         xpt_schedule(periph, priority);
1273                         goto out;
1274                 } else if (nlun == 0) {
1275                         /*
1276                          * If there don't appear to be any luns, bail.
1277                          */
1278                         free(lp, M_CAMXPT);
1279                         lp = NULL;
1280                 } else if (probe_strange_rpl_data(lp, maxlun)) {
1281                         /*
1282                          * If we can't understand the lun format
1283                          * of any entry, bail.
1284                          */
1285                         free(lp, M_CAMXPT);
1286                         lp = NULL;
1287                 } else {
1288                         lun_id_t lun;
1289                         int idx;
1290
1291                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1292                            ("Probe: %u lun(s) reported\n", nlun));
1293
1294                         CAM_GET_SIMPLE_LUN(lp, 0, lun);
1295                         /*
1296                          * If the first lun is not lun 0, then either there
1297                          * is no lun 0 in the list, or the list is unsorted.
1298                          */
1299                         if (lun != 0) {
1300                                 for (idx = 0; idx < nlun; idx++) {
1301                                         CAM_GET_SIMPLE_LUN(lp, idx, lun);
1302                                         if (lun == 0) {
1303                                                 break;
1304                                         }
1305                                 }
1306                                 if (idx != nlun) {
1307                                         uint8_t tlun[8];
1308                                         memcpy(tlun,
1309                                             lp->luns[0].lundata, 8);
1310                                         memcpy(lp->luns[0].lundata,
1311                                             lp->luns[idx].lundata, 8);
1312                                         memcpy(lp->luns[idx].lundata,
1313                                             tlun, 8);
1314                                         CAM_DEBUG(path, CAM_DEBUG_PROBE,
1315                                             ("lun 0 in position %u\n", idx));
1316                                 } else {
1317                                         /*
1318                                          * There is no lun 0 in our list. Destroy
1319                                          * the validity of the inquiry data so we
1320                                          * bail here and now.
1321                                          */
1322                                         path->device->flags &=
1323                                             ~CAM_DEV_INQUIRY_DATA_VALID;
1324                                 }
1325                         }
1326                         /*
1327                          * If we have an old lun list, We can either
1328                          * retest luns that appear to have been dropped,
1329                          * or just nuke them.  We'll opt for the latter.
1330                          * This function will also install the new list
1331                          * in the target structure.
1332                          */
1333                         probe_purge_old(path, lp);
1334                         lp = NULL;
1335                 }
1336                 if (path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) {
1337                         struct scsi_inquiry_data *inq_buf;
1338                         inq_buf = &path->device->inq_data;
1339                         if (INQ_DATA_TQ_ENABLED(inq_buf))
1340                                 PROBE_SET_ACTION(softc, PROBE_MODE_SENSE);
1341                         else
1342                                 PROBE_SET_ACTION(softc,
1343                                     PROBE_SUPPORTED_VPD_LIST);
1344                         xpt_release_ccb(done_ccb);
1345                         xpt_schedule(periph, priority);
1346                         goto out;
1347                 }
1348                 if (lp) {
1349                         free(lp, M_CAMXPT);
1350                 }
1351                 break;
1352         }
1353         case PROBE_MODE_SENSE:
1354         {
1355                 struct ccb_scsiio *csio;
1356                 struct scsi_mode_header_6 *mode_hdr;
1357
1358                 csio = &done_ccb->csio;
1359                 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr;
1360                 if (cam_ccb_status(done_ccb) == CAM_REQ_CMP) {
1361                         struct scsi_control_page *page;
1362                         u_int8_t *offset;
1363
1364                         offset = ((u_int8_t *)&mode_hdr[1])
1365                             + mode_hdr->blk_desc_len;
1366                         page = (struct scsi_control_page *)offset;
1367                         path->device->queue_flags = page->queue_flags;
1368                 } else if (cam_periph_error(done_ccb, 0,
1369                                             SF_RETRY_UA|SF_NO_PRINT,
1370                                             &softc->saved_ccb) == ERESTART) {
1371                         goto out;
1372                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1373                         /* Don't wedge the queue */
1374                         xpt_release_devq(done_ccb->ccb_h.path,
1375                                          /*count*/1, /*run_queue*/TRUE);
1376                 }
1377                 xpt_release_ccb(done_ccb);
1378                 free(mode_hdr, M_CAMXPT);
1379                 PROBE_SET_ACTION(softc, PROBE_SUPPORTED_VPD_LIST);
1380                 xpt_schedule(periph, priority);
1381                 goto out;
1382         }
1383         case PROBE_SUPPORTED_VPD_LIST:
1384         {
1385                 struct ccb_scsiio *csio;
1386                 struct scsi_vpd_supported_page_list *page_list;
1387
1388                 csio = &done_ccb->csio;
1389                 page_list =
1390                     (struct scsi_vpd_supported_page_list *)csio->data_ptr;
1391
1392                 if (path->device->supported_vpds != NULL) {
1393                         free(path->device->supported_vpds, M_CAMXPT);
1394                         path->device->supported_vpds = NULL;
1395                         path->device->supported_vpds_len = 0;
1396                 }
1397
1398                 if (page_list == NULL) {
1399                         /*
1400                          * Don't process the command as it was never sent
1401                          */
1402                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1403                         /* Got vpd list */
1404                         path->device->supported_vpds_len = page_list->length +
1405                             SVPD_SUPPORTED_PAGES_HDR_LEN;
1406                         path->device->supported_vpds = (uint8_t *)page_list;
1407                         xpt_release_ccb(done_ccb);
1408                         PROBE_SET_ACTION(softc, PROBE_DEVICE_ID);
1409                         xpt_schedule(periph, priority);
1410                         goto out;
1411                 } else if (cam_periph_error(done_ccb, 0,
1412                                             SF_RETRY_UA|SF_NO_PRINT,
1413                                             &softc->saved_ccb) == ERESTART) {
1414                         goto out;
1415                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1416                         /* Don't wedge the queue */
1417                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1418                                          /*run_queue*/TRUE);
1419                 }
1420
1421                 if (page_list)
1422                         free(page_list, M_CAMXPT);
1423                 /* No VPDs available, skip to device check. */
1424                 csio->data_ptr = NULL;
1425                 goto probe_device_check;
1426         }
1427         case PROBE_DEVICE_ID:
1428         {
1429                 struct scsi_vpd_device_id *devid;
1430                 struct ccb_scsiio *csio;
1431                 uint32_t length = 0;
1432
1433                 csio = &done_ccb->csio;
1434                 devid = (struct scsi_vpd_device_id *)csio->data_ptr;
1435
1436                 /* Clean up from previous instance of this device */
1437                 if (path->device->device_id != NULL) {
1438                         path->device->device_id_len = 0;
1439                         free(path->device->device_id, M_CAMXPT);
1440                         path->device->device_id = NULL;
1441                 }
1442
1443                 if (devid == NULL) {
1444                         /* Don't process the command as it was never sent */
1445                 } else if (CCB_COMPLETED_OK(csio->ccb_h)) {
1446                         length = scsi_2btoul(devid->length);
1447                         if (length != 0) {
1448                                 /*
1449                                  * NB: device_id_len is actual response
1450                                  * size, not buffer size.
1451                                  */
1452                                 path->device->device_id_len = length +
1453                                     SVPD_DEVICE_ID_HDR_LEN;
1454                                 path->device->device_id = (uint8_t *)devid;
1455                         }
1456                 } else if (cam_periph_error(done_ccb, 0,
1457                                             SF_RETRY_UA,
1458                                             &softc->saved_ccb) == ERESTART) {
1459                         goto out;
1460                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1461                         /* Don't wedge the queue */
1462                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1463                                          /*run_queue*/TRUE);
1464                 }
1465
1466                 /* Free the device id space if we don't use it */
1467                 if (devid && length == 0)
1468                         free(devid, M_CAMXPT);
1469                 xpt_release_ccb(done_ccb);
1470                 PROBE_SET_ACTION(softc, PROBE_SERIAL_NUM);
1471                 xpt_schedule(periph, priority);
1472                 goto out;
1473         }
1474
1475 probe_device_check:
1476         case PROBE_SERIAL_NUM:
1477         {
1478                 struct ccb_scsiio *csio;
1479                 struct scsi_vpd_unit_serial_number *serial_buf;
1480                 u_int32_t  priority;
1481                 int changed;
1482                 int have_serialnum;
1483
1484                 changed = 1;
1485                 have_serialnum = 0;
1486                 csio = &done_ccb->csio;
1487                 priority = done_ccb->ccb_h.pinfo.priority;
1488                 serial_buf =
1489                     (struct scsi_vpd_unit_serial_number *)csio->data_ptr;
1490
1491                 if (serial_buf == NULL) {
1492                         /*
1493                          * Don't process the command as it was never sent
1494                          */
1495                 } else if (cam_ccb_status(done_ccb) == CAM_REQ_CMP
1496                         && (serial_buf->length > 0)) {
1497
1498                         have_serialnum = 1;
1499                         path->device->serial_num =
1500                                 (u_int8_t *)malloc((serial_buf->length + 1),
1501                                                    M_CAMXPT, M_NOWAIT);
1502                         if (path->device->serial_num != NULL) {
1503                                 memcpy(path->device->serial_num,
1504                                        serial_buf->serial_num,
1505                                        serial_buf->length);
1506                                 path->device->serial_num_len =
1507                                     serial_buf->length;
1508                                 path->device->serial_num[serial_buf->length]
1509                                     = '\0';
1510                         }
1511                 } else if (cam_periph_error(done_ccb, 0,
1512                                             SF_RETRY_UA|SF_NO_PRINT,
1513                                             &softc->saved_ccb) == ERESTART) {
1514                         goto out;
1515                 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1516                         /* Don't wedge the queue */
1517                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1518                                          /*run_queue*/TRUE);
1519                 }
1520
1521                 /*
1522                  * Let's see if we have seen this device before.
1523                  */
1524                 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) {
1525                         MD5_CTX context;
1526                         u_int8_t digest[16];
1527
1528                         MD5Init(&context);
1529
1530                         MD5Update(&context,
1531                                   (unsigned char *)&path->device->inq_data,
1532                                   sizeof(struct scsi_inquiry_data));
1533
1534                         if (have_serialnum)
1535                                 MD5Update(&context, serial_buf->serial_num,
1536                                           serial_buf->length);
1537
1538                         MD5Final(digest, &context);
1539                         if (bcmp(softc->digest, digest, 16) == 0)
1540                                 changed = 0;
1541
1542                         /*
1543                          * XXX Do we need to do a TUR in order to ensure
1544                          *     that the device really hasn't changed???
1545                          */
1546                         if ((changed != 0)
1547                          && ((softc->flags & PROBE_NO_ANNOUNCE) == 0))
1548                                 xpt_async(AC_LOST_DEVICE, path, NULL);
1549                 }
1550                 if (serial_buf != NULL)
1551                         free(serial_buf, M_CAMXPT);
1552
1553                 if (changed != 0) {
1554                         /*
1555                          * Now that we have all the necessary
1556                          * information to safely perform transfer
1557                          * negotiations... Controllers don't perform
1558                          * any negotiation or tagged queuing until
1559                          * after the first XPT_SET_TRAN_SETTINGS ccb is
1560                          * received.  So, on a new device, just retrieve
1561                          * the user settings, and set them as the current
1562                          * settings to set the device up.
1563                          */
1564                         proberequestdefaultnegotiation(periph);
1565                         xpt_release_ccb(done_ccb);
1566
1567                         /*
1568                          * Perform a TUR to allow the controller to
1569                          * perform any necessary transfer negotiation.
1570                          */
1571                         PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
1572                         xpt_schedule(periph, priority);
1573                         goto out;
1574                 }
1575                 xpt_release_ccb(done_ccb);
1576                 break;
1577         }
1578         case PROBE_TUR_FOR_NEGOTIATION:
1579         case PROBE_DV_EXIT:
1580                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1581                         cam_periph_error(done_ccb, 0,
1582                             SF_NO_PRINT | SF_NO_RECOVERY | SF_NO_RETRY, NULL);
1583                 }
1584                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1585                         /* Don't wedge the queue */
1586                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1587                                          /*run_queue*/TRUE);
1588                 }
1589                 /*
1590                  * Do Domain Validation for lun 0 on devices that claim
1591                  * to support Synchronous Transfer modes.
1592                  */
1593                 if (softc->action == PROBE_TUR_FOR_NEGOTIATION
1594                  && done_ccb->ccb_h.target_lun == 0
1595                  && (path->device->inq_data.flags & SID_Sync) != 0
1596                  && (path->device->flags & CAM_DEV_IN_DV) == 0) {
1597                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1598                             ("Begin Domain Validation\n"));
1599                         path->device->flags |= CAM_DEV_IN_DV;
1600                         xpt_release_ccb(done_ccb);
1601                         PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV1);
1602                         xpt_schedule(periph, priority);
1603                         goto out;
1604                 }
1605                 if (softc->action == PROBE_DV_EXIT) {
1606                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1607                             ("Leave Domain Validation\n"));
1608                 }
1609                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1610                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1611                         xpt_acquire_device(path->device);
1612                 }
1613                 path->device->flags &=
1614                     ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
1615                 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
1616                         /* Inform the XPT that a new device has been found */
1617                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1618                         xpt_action(done_ccb);
1619                         xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
1620                                   done_ccb);
1621                 }
1622                 PROBE_SET_ACTION(softc, PROBE_DONE);
1623                 xpt_release_ccb(done_ccb);
1624                 break;
1625         case PROBE_INQUIRY_BASIC_DV1:
1626         case PROBE_INQUIRY_BASIC_DV2:
1627         {
1628                 struct scsi_inquiry_data *nbuf;
1629                 struct ccb_scsiio *csio;
1630
1631                 if (cam_ccb_status(done_ccb) != CAM_REQ_CMP) {
1632                         cam_periph_error(done_ccb, 0,
1633                             SF_NO_PRINT | SF_NO_RECOVERY | SF_NO_RETRY, NULL);
1634                 }
1635                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1636                         /* Don't wedge the queue */
1637                         xpt_release_devq(done_ccb->ccb_h.path, /*count*/1,
1638                                          /*run_queue*/TRUE);
1639                 }
1640                 csio = &done_ccb->csio;
1641                 nbuf = (struct scsi_inquiry_data *)csio->data_ptr;
1642                 if (bcmp(nbuf, &path->device->inq_data, SHORT_INQUIRY_LENGTH)) {
1643                         xpt_print(path,
1644                             "inquiry data fails comparison at DV%d step\n",
1645                             softc->action == PROBE_INQUIRY_BASIC_DV1 ? 1 : 2);
1646                         if (proberequestbackoff(periph, path->device)) {
1647                                 path->device->flags &= ~CAM_DEV_IN_DV;
1648                                 PROBE_SET_ACTION(softc, PROBE_TUR_FOR_NEGOTIATION);
1649                         } else {
1650                                 /* give up */
1651                                 PROBE_SET_ACTION(softc, PROBE_DV_EXIT);
1652                         }
1653                         free(nbuf, M_CAMXPT);
1654                         xpt_release_ccb(done_ccb);
1655                         xpt_schedule(periph, priority);
1656                         goto out;
1657                 }
1658                 free(nbuf, M_CAMXPT);
1659                 if (softc->action == PROBE_INQUIRY_BASIC_DV1) {
1660                         PROBE_SET_ACTION(softc, PROBE_INQUIRY_BASIC_DV2);
1661                         xpt_release_ccb(done_ccb);
1662                         xpt_schedule(periph, priority);
1663                         goto out;
1664                 }
1665                 if (softc->action == PROBE_INQUIRY_BASIC_DV2) {
1666                         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE,
1667                             ("Leave Domain Validation Successfully\n"));
1668                 }
1669                 if (path->device->flags & CAM_DEV_UNCONFIGURED) {
1670                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1671                         xpt_acquire_device(path->device);
1672                 }
1673                 path->device->flags &=
1674                     ~(CAM_DEV_IN_DV|CAM_DEV_DV_HIT_BOTTOM);
1675                 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) {
1676                         /* Inform the XPT that a new device has been found */
1677                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1678                         xpt_action(done_ccb);
1679                         xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path,
1680                                   done_ccb);
1681                 }
1682                 PROBE_SET_ACTION(softc, PROBE_DONE);
1683                 xpt_release_ccb(done_ccb);
1684                 break;
1685         }
1686         default:
1687                 panic("probedone: invalid action state 0x%x\n", softc->action);
1688         }
1689         done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
1690         TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe);
1691         done_ccb->ccb_h.status = CAM_REQ_CMP;
1692         xpt_done(done_ccb);
1693         if (TAILQ_FIRST(&softc->request_ccbs) == NULL) {
1694                 CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe completed\n"));
1695                 /* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */
1696                 cam_release_devq(path, 0, 0, 0, FALSE);
1697                 cam_periph_invalidate(periph);
1698                 cam_periph_release_locked(periph);
1699         } else {
1700                 probeschedule(periph);
1701                 goto out;
1702         }
1703 }
1704
1705 static int
1706 probe_strange_rpl_data(struct scsi_report_luns_data *rp, uint32_t maxlun)
1707 {
1708         uint32_t idx;
1709         uint32_t nlun = MIN(maxlun, (scsi_4btoul(rp->length) / 8));
1710
1711         for (idx = 0; idx < nlun; idx++) {
1712                 if (!CAM_CAN_GET_SIMPLE_LUN(rp, idx)) {
1713                         return (-1);
1714                 }
1715         }
1716         return (0);
1717 }
1718
1719 static void
1720 probe_purge_old(struct cam_path *path, struct scsi_report_luns_data *new)
1721 {
1722         struct cam_path *tp;
1723         struct scsi_report_luns_data *old;
1724         u_int idx1, idx2, nlun_old, nlun_new, this_lun;
1725         u_int8_t *ol, *nl;
1726
1727         if (path->target == NULL) {
1728                 return;
1729         }
1730         if (path->target->luns == NULL) {
1731                 path->target->luns = new;
1732                 return;
1733         }
1734         old = path->target->luns;
1735         nlun_old = scsi_4btoul(old->length) / 8;
1736         nlun_new = scsi_4btoul(new->length) / 8;
1737
1738         /*
1739          * We are not going to assume sorted lists. Deal.
1740          */
1741         for (idx1 = 0; idx1 < nlun_old; idx1++) {
1742                 ol = old->luns[idx1].lundata;
1743                 for (idx2 = 0; idx2 < nlun_new; idx2++) {
1744                         nl = new->luns[idx2].lundata;
1745                         if (memcmp(nl, ol, 8) == 0) {
1746                                 break;
1747                         }
1748                 }
1749                 if (idx2 < nlun_new) {
1750                         continue;
1751                 }
1752                 /*
1753                  * An 'old' item not in the 'new' list.
1754                  * Nuke it. Except that if it is lun 0,
1755                  * that would be what the probe state
1756                  * machine is currently working on,
1757                  * so we won't do that.
1758                  *
1759                  * We also cannot nuke it if it is
1760                  * not in a lun format we understand.
1761                  */
1762                 if (!CAM_CAN_GET_SIMPLE_LUN(old, idx1)) {
1763                         continue;
1764                 }
1765                 CAM_GET_SIMPLE_LUN(old, idx1, this_lun);
1766                 if (this_lun == 0) {
1767                         continue;
1768                 }
1769                 if (xpt_create_path(&tp, NULL, xpt_path_path_id(path),
1770                     xpt_path_target_id(path), this_lun) == CAM_REQ_CMP) {
1771                         xpt_async(AC_LOST_DEVICE, tp, NULL);
1772                         xpt_free_path(tp);
1773                 }
1774         }
1775         free(old, M_CAMXPT);
1776         path->target->luns = new;
1777 }
1778
1779 static void
1780 probecleanup(struct cam_periph *periph)
1781 {
1782         free(periph->softc, M_CAMXPT);
1783 }
1784
1785 static void
1786 scsi_find_quirk(struct cam_ed *device)
1787 {
1788         struct scsi_quirk_entry *quirk;
1789         caddr_t match;
1790
1791         match = cam_quirkmatch((caddr_t)&device->inq_data,
1792                                (caddr_t)scsi_quirk_table,
1793                                sizeof(scsi_quirk_table) /
1794                                sizeof(*scsi_quirk_table),
1795                                sizeof(*scsi_quirk_table), scsi_inquiry_match);
1796
1797         if (match == NULL)
1798                 panic("xpt_find_quirk: device didn't match wildcard entry!!");
1799
1800         quirk = (struct scsi_quirk_entry *)match;
1801         device->quirk = quirk;
1802         device->mintags = quirk->mintags;
1803         device->maxtags = quirk->maxtags;
1804 }
1805
1806 static int
1807 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS)
1808 {
1809         int error, val;
1810
1811         val = cam_srch_hi;
1812         error = sysctl_handle_int(oidp, &val, 0, req);
1813         if (error != 0 || req->newptr == NULL)
1814                 return (error);
1815         if (val == 0 || val == 1) {
1816                 cam_srch_hi = val;
1817                 return (0);
1818         } else {
1819                 return (EINVAL);
1820         }
1821 }
1822
1823 typedef struct {
1824         union   ccb *request_ccb;
1825         struct  ccb_pathinq *cpi;
1826         int     counter;
1827         int     lunindex[0];
1828 } scsi_scan_bus_info;
1829
1830 /*
1831  * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
1832  * As the scan progresses, scsi_scan_bus is used as the
1833  * callback on completion function.
1834  */
1835 static void
1836 scsi_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
1837 {
1838         CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
1839                   ("scsi_scan_bus\n"));
1840         switch (request_ccb->ccb_h.func_code) {
1841         case XPT_SCAN_BUS:
1842         case XPT_SCAN_TGT:
1843         {
1844                 scsi_scan_bus_info *scan_info;
1845                 union   ccb *work_ccb, *reset_ccb;
1846                 struct  cam_path *path;
1847                 u_int   i;
1848                 u_int   low_target, max_target;
1849                 u_int   initiator_id;
1850
1851                 /* Find out the characteristics of the bus */
1852                 work_ccb = xpt_alloc_ccb_nowait();
1853                 if (work_ccb == NULL) {
1854                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1855                         xpt_done(request_ccb);
1856                         return;
1857                 }
1858                 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
1859                               request_ccb->ccb_h.pinfo.priority);
1860                 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
1861                 xpt_action(work_ccb);
1862                 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
1863                         request_ccb->ccb_h.status = work_ccb->ccb_h.status;
1864                         xpt_free_ccb(work_ccb);
1865                         xpt_done(request_ccb);
1866                         return;
1867                 }
1868
1869                 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
1870                         /*
1871                          * Can't scan the bus on an adapter that
1872                          * cannot perform the initiator role.
1873                          */
1874                         request_ccb->ccb_h.status = CAM_REQ_CMP;
1875                         xpt_free_ccb(work_ccb);
1876                         xpt_done(request_ccb);
1877                         return;
1878                 }
1879
1880                 /* We may need to reset bus first, if we haven't done it yet. */
1881                 if ((work_ccb->cpi.hba_inquiry &
1882                     (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) &&
1883                     !(work_ccb->cpi.hba_misc & PIM_NOBUSRESET) &&
1884                     !timevalisset(&request_ccb->ccb_h.path->bus->last_reset) &&
1885                     (reset_ccb = xpt_alloc_ccb_nowait()) != NULL) {
1886                         xpt_setup_ccb(&reset_ccb->ccb_h, request_ccb->ccb_h.path,
1887                               CAM_PRIORITY_NONE);
1888                         reset_ccb->ccb_h.func_code = XPT_RESET_BUS;
1889                         xpt_action(reset_ccb);
1890                         if (reset_ccb->ccb_h.status != CAM_REQ_CMP) {
1891                                 request_ccb->ccb_h.status = reset_ccb->ccb_h.status;
1892                                 xpt_free_ccb(reset_ccb);
1893                                 xpt_free_ccb(work_ccb);
1894                                 xpt_done(request_ccb);
1895                                 return;
1896                         }
1897                         xpt_free_ccb(reset_ccb);
1898                 }
1899
1900                 /* Save some state for use while we probe for devices */
1901                 scan_info = (scsi_scan_bus_info *) malloc(sizeof(scsi_scan_bus_info) +
1902                     (work_ccb->cpi.max_target * sizeof (u_int)), M_CAMXPT, M_ZERO|M_NOWAIT);
1903                 if (scan_info == NULL) {
1904                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1905                         xpt_done(request_ccb);
1906                         return;
1907                 }
1908                 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
1909                    ("SCAN start for %p\n", scan_info));
1910                 scan_info->request_ccb = request_ccb;
1911                 scan_info->cpi = &work_ccb->cpi;
1912
1913                 /* Cache on our stack so we can work asynchronously */
1914                 max_target = scan_info->cpi->max_target;
1915                 low_target = 0;
1916                 initiator_id = scan_info->cpi->initiator_id;
1917
1918
1919                 /*
1920                  * We can scan all targets in parallel, or do it sequentially.
1921                  */
1922
1923                 if (request_ccb->ccb_h.func_code == XPT_SCAN_TGT) {
1924                         max_target = low_target = request_ccb->ccb_h.target_id;
1925                         scan_info->counter = 0;
1926                 } else if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
1927                         max_target = 0;
1928                         scan_info->counter = 0;
1929                 } else {
1930                         scan_info->counter = scan_info->cpi->max_target + 1;
1931                         if (scan_info->cpi->initiator_id < scan_info->counter) {
1932                                 scan_info->counter--;
1933                         }
1934                 }
1935
1936                 for (i = low_target; i <= max_target; i++) {
1937                         cam_status status;
1938                         if (i == initiator_id)
1939                                 continue;
1940
1941                         status = xpt_create_path(&path, NULL,
1942                                                  request_ccb->ccb_h.path_id,
1943                                                  i, 0);
1944                         if (status != CAM_REQ_CMP) {
1945                                 printf("scsi_scan_bus: xpt_create_path failed"
1946                                        " with status %#x, bus scan halted\n",
1947                                        status);
1948                                 free(scan_info, M_CAMXPT);
1949                                 request_ccb->ccb_h.status = status;
1950                                 xpt_free_ccb(work_ccb);
1951                                 xpt_done(request_ccb);
1952                                 break;
1953                         }
1954                         work_ccb = xpt_alloc_ccb_nowait();
1955                         if (work_ccb == NULL) {
1956                                 xpt_free_ccb((union ccb *)scan_info->cpi);
1957                                 free(scan_info, M_CAMXPT);
1958                                 xpt_free_path(path);
1959                                 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1960                                 xpt_done(request_ccb);
1961                                 break;
1962                         }
1963                         xpt_setup_ccb(&work_ccb->ccb_h, path,
1964                                       request_ccb->ccb_h.pinfo.priority);
1965                         work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
1966                         work_ccb->ccb_h.cbfcnp = scsi_scan_bus;
1967                         work_ccb->ccb_h.ppriv_ptr0 = scan_info;
1968                         work_ccb->crcn.flags = request_ccb->crcn.flags;
1969                         xpt_action(work_ccb);
1970                 }
1971                 break;
1972         }
1973         case XPT_SCAN_LUN:
1974         {
1975                 cam_status status;
1976                 struct cam_path *path, *oldpath;
1977                 scsi_scan_bus_info *scan_info;
1978                 struct cam_et *target;
1979                 struct cam_ed *device;
1980                 int next_target;
1981                 path_id_t path_id;
1982                 target_id_t target_id;
1983                 lun_id_t lun_id;
1984
1985                 oldpath = request_ccb->ccb_h.path;
1986
1987                 status = cam_ccb_status(request_ccb);
1988                 /* Reuse the same CCB to query if a device was really found */
1989                 scan_info = (scsi_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0;
1990                 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path,
1991                               request_ccb->ccb_h.pinfo.priority);
1992                 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1993
1994
1995                 path_id = request_ccb->ccb_h.path_id;
1996                 target_id = request_ccb->ccb_h.target_id;
1997                 lun_id = request_ccb->ccb_h.target_lun;
1998                 xpt_action(request_ccb);
1999
2000                 target = request_ccb->ccb_h.path->target;
2001                 next_target = 1;
2002
2003                 if (target->luns) {
2004                         uint32_t first;
2005                         u_int nluns = scsi_4btoul(target->luns->length) / 8;
2006
2007                         /*
2008                          * Make sure we skip over lun 0 if it's the first member
2009                          * of the list as we've actually just finished probing
2010                          * it.
2011                          */
2012                         CAM_GET_SIMPLE_LUN(target->luns, 0, first);
2013                         if (first == 0 && scan_info->lunindex[target_id] == 0) {
2014                                 scan_info->lunindex[target_id]++;
2015                         }
2016
2017                         if (scan_info->lunindex[target_id] < nluns) {
2018                                 CAM_GET_SIMPLE_LUN(target->luns,
2019                                     scan_info->lunindex[target_id], lun_id);
2020                                 next_target = 0;
2021                                 CAM_DEBUG(request_ccb->ccb_h.path,
2022                                     CAM_DEBUG_PROBE,
2023                                    ("next lun to try at index %u is %u\n",
2024                                    scan_info->lunindex[target_id], lun_id));
2025                                 scan_info->lunindex[target_id]++;
2026                         } else {
2027                                 /*
2028                                  * We're done with scanning all luns.
2029                                  *
2030                                  * Nuke the bogus device for lun 0 if lun 0
2031                                  * wasn't on the list.
2032                                  */
2033                                 if (first != 0) {
2034                                         TAILQ_FOREACH(device,
2035                                             &target->ed_entries, links) {
2036                                                 if (device->lun_id == 0) {
2037                                                         break;
2038                                                 }
2039                                         }
2040                                         if (device) {
2041                                                 xpt_release_device(device);
2042                                         }
2043                                 }
2044                         }
2045                 } else if (request_ccb->ccb_h.status != CAM_REQ_CMP) {
2046                         int phl;
2047
2048                         /*
2049                          * If we already probed lun 0 successfully, or
2050                          * we have additional configured luns on this
2051                          * target that might have "gone away", go onto
2052                          * the next lun.
2053                          */
2054                         /*
2055                          * We may touch devices that we don't
2056                          * hold references too, so ensure they
2057                          * don't disappear out from under us.
2058                          * The target above is referenced by the
2059                          * path in the request ccb.
2060                          */
2061                         phl = 0;
2062                         device = TAILQ_FIRST(&target->ed_entries);
2063                         if (device != NULL) {
2064                                 phl = CAN_SRCH_HI_SPARSE(device);
2065                                 if (device->lun_id == 0)
2066                                         device = TAILQ_NEXT(device, links);
2067                         }
2068                         if ((lun_id != 0) || (device != NULL)) {
2069                                 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl) {
2070                                         lun_id++;
2071                                         next_target = 0;
2072                                 }
2073                         }
2074                         if (lun_id == request_ccb->ccb_h.target_lun
2075                             || lun_id > scan_info->cpi->max_lun)
2076                                 next_target = 1;
2077                 } else {
2078
2079                         device = request_ccb->ccb_h.path->device;
2080
2081                         if ((SCSI_QUIRK(device)->quirks &
2082                             CAM_QUIRK_NOLUNS) == 0) {
2083                                 /* Try the next lun */
2084                                 if (lun_id < (CAM_SCSI2_MAXLUN-1)
2085                                   || CAN_SRCH_HI_DENSE(device)) {
2086                                         lun_id++;
2087                                         next_target = 0;
2088                                 }
2089                         }
2090                         if (lun_id == request_ccb->ccb_h.target_lun
2091                             || lun_id > scan_info->cpi->max_lun)
2092                                 next_target = 1;
2093                 }
2094
2095                 /*
2096                  * Check to see if we scan any further luns.
2097                  */
2098                 if (next_target) {
2099                         int done;
2100
2101                         /*
2102                          * Free the current request path- we're done with it.
2103                          */
2104                         xpt_free_path(oldpath);
2105  hop_again:
2106                         done = 0;
2107                         if (scan_info->request_ccb->ccb_h.func_code == XPT_SCAN_TGT) {
2108                                 done = 1;
2109                         } else if (scan_info->cpi->hba_misc & PIM_SEQSCAN) {
2110                                 scan_info->counter++;
2111                                 if (scan_info->counter ==
2112                                     scan_info->cpi->initiator_id) {
2113                                         scan_info->counter++;
2114                                 }
2115                                 if (scan_info->counter >=
2116                                     scan_info->cpi->max_target+1) {
2117                                         done = 1;
2118                                 }
2119                         } else {
2120                                 scan_info->counter--;
2121                                 if (scan_info->counter == 0) {
2122                                         done = 1;
2123                                 }
2124                         }
2125                         if (done) {
2126                                 xpt_free_ccb(request_ccb);
2127                                 xpt_free_ccb((union ccb *)scan_info->cpi);
2128                                 request_ccb = scan_info->request_ccb;
2129                                 CAM_DEBUG(request_ccb->ccb_h.path,
2130                                     CAM_DEBUG_TRACE,
2131                                    ("SCAN done for %p\n", scan_info));
2132                                 free(scan_info, M_CAMXPT);
2133                                 request_ccb->ccb_h.status = CAM_REQ_CMP;
2134                                 xpt_done(request_ccb);
2135                                 break;
2136                         }
2137
2138                         if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) {
2139                                 xpt_free_ccb(request_ccb);
2140                                 break;
2141                         }
2142                         status = xpt_create_path(&path, NULL,
2143                             scan_info->request_ccb->ccb_h.path_id,
2144                             scan_info->counter, 0);
2145                         if (status != CAM_REQ_CMP) {
2146                                 printf("scsi_scan_bus: xpt_create_path failed"
2147                                     " with status %#x, bus scan halted\n",
2148                                     status);
2149                                 xpt_free_ccb(request_ccb);
2150                                 xpt_free_ccb((union ccb *)scan_info->cpi);
2151                                 request_ccb = scan_info->request_ccb;
2152                                 free(scan_info, M_CAMXPT);
2153                                 request_ccb->ccb_h.status = status;
2154                                 xpt_done(request_ccb);
2155                                 break;
2156                         }
2157                         xpt_setup_ccb(&request_ccb->ccb_h, path,
2158                             request_ccb->ccb_h.pinfo.priority);
2159                         request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2160                         request_ccb->ccb_h.cbfcnp = scsi_scan_bus;
2161                         request_ccb->ccb_h.ppriv_ptr0 = scan_info;
2162                         request_ccb->crcn.flags =
2163                             scan_info->request_ccb->crcn.flags;
2164                 } else {
2165                         status = xpt_create_path(&path, NULL,
2166                                                  path_id, target_id, lun_id);
2167                         /*
2168                          * Free the old request path- we're done with it. We
2169                          * do this *after* creating the new path so that
2170                          * we don't remove a target that has our lun list
2171                          * in the case that lun 0 is not present.
2172                          */
2173                         xpt_free_path(oldpath);
2174                         if (status != CAM_REQ_CMP) {
2175                                 printf("scsi_scan_bus: xpt_create_path failed "
2176                                        "with status %#x, halting LUN scan\n",
2177                                        status);
2178                                 goto hop_again;
2179                         }
2180                         xpt_setup_ccb(&request_ccb->ccb_h, path,
2181                                       request_ccb->ccb_h.pinfo.priority);
2182                         request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2183                         request_ccb->ccb_h.cbfcnp = scsi_scan_bus;
2184                         request_ccb->ccb_h.ppriv_ptr0 = scan_info;
2185                         request_ccb->crcn.flags =
2186                                 scan_info->request_ccb->crcn.flags;
2187                 }
2188                 xpt_action(request_ccb);
2189                 break;
2190         }
2191         default:
2192                 break;
2193         }
2194 }
2195
2196 static void
2197 scsi_scan_lun(struct cam_periph *periph, struct cam_path *path,
2198              cam_flags flags, union ccb *request_ccb)
2199 {
2200         struct ccb_pathinq cpi;
2201         cam_status status;
2202         struct cam_path *new_path;
2203         struct cam_periph *old_periph;
2204
2205         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("scsi_scan_lun\n"));
2206
2207         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2208         cpi.ccb_h.func_code = XPT_PATH_INQ;
2209         xpt_action((union ccb *)&cpi);
2210
2211         if (cpi.ccb_h.status != CAM_REQ_CMP) {
2212                 if (request_ccb != NULL) {
2213                         request_ccb->ccb_h.status = cpi.ccb_h.status;
2214                         xpt_done(request_ccb);
2215                 }
2216                 return;
2217         }
2218
2219         if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
2220                 /*
2221                  * Can't scan the bus on an adapter that
2222                  * cannot perform the initiator role.
2223                  */
2224                 if (request_ccb != NULL) {
2225                         request_ccb->ccb_h.status = CAM_REQ_CMP;
2226                         xpt_done(request_ccb);
2227                 }
2228                 return;
2229         }
2230
2231         if (request_ccb == NULL) {
2232                 request_ccb = xpt_alloc_ccb_nowait();
2233                 if (request_ccb == NULL) {
2234                         xpt_print(path, "scsi_scan_lun: can't allocate CCB, "
2235                             "can't continue\n");
2236                         return;
2237                 }
2238                 status = xpt_create_path(&new_path, NULL,
2239                                           path->bus->path_id,
2240                                           path->target->target_id,
2241                                           path->device->lun_id);
2242                 if (status != CAM_REQ_CMP) {
2243                         xpt_print(path, "scsi_scan_lun: can't create path, "
2244                             "can't continue\n");
2245                         xpt_free_ccb(request_ccb);
2246                         return;
2247                 }
2248                 xpt_setup_ccb(&request_ccb->ccb_h, new_path, CAM_PRIORITY_XPT);
2249                 request_ccb->ccb_h.cbfcnp = xptscandone;
2250                 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
2251                 request_ccb->crcn.flags = flags;
2252         }
2253
2254         if ((old_periph = cam_periph_find(path, "probe")) != NULL) {
2255                 if ((old_periph->flags & CAM_PERIPH_INVALID) == 0) {
2256                         probe_softc *softc;
2257
2258                         softc = (probe_softc *)old_periph->softc;
2259                         TAILQ_INSERT_TAIL(&softc->request_ccbs,
2260                             &request_ccb->ccb_h, periph_links.tqe);
2261                 } else {
2262                         request_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
2263                         xpt_done(request_ccb);
2264                 }
2265         } else {
2266                 status = cam_periph_alloc(proberegister, NULL, probecleanup,
2267                                           probestart, "probe",
2268                                           CAM_PERIPH_BIO,
2269                                           request_ccb->ccb_h.path, NULL, 0,
2270                                           request_ccb);
2271
2272                 if (status != CAM_REQ_CMP) {
2273                         xpt_print(path, "scsi_scan_lun: cam_alloc_periph "
2274                             "returned an error, can't continue probe\n");
2275                         request_ccb->ccb_h.status = status;
2276                         xpt_done(request_ccb);
2277                 }
2278         }
2279 }
2280
2281 static void
2282 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
2283 {
2284
2285         xpt_free_path(done_ccb->ccb_h.path);
2286         xpt_free_ccb(done_ccb);
2287 }
2288
2289 static struct cam_ed *
2290 scsi_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
2291 {
2292         struct cam_path path;
2293         struct scsi_quirk_entry *quirk;
2294         struct cam_ed *device;
2295
2296         device = xpt_alloc_device(bus, target, lun_id);
2297         if (device == NULL)
2298                 return (NULL);
2299
2300         /*
2301          * Take the default quirk entry until we have inquiry
2302          * data and can determine a better quirk to use.
2303          */
2304         quirk = &scsi_quirk_table[scsi_quirk_table_size - 1];
2305         device->quirk = (void *)quirk;
2306         device->mintags = quirk->mintags;
2307         device->maxtags = quirk->maxtags;
2308         bzero(&device->inq_data, sizeof(device->inq_data));
2309         device->inq_flags = 0;
2310         device->queue_flags = 0;
2311         device->serial_num = NULL;
2312         device->serial_num_len = 0;
2313         device->device_id = NULL;
2314         device->device_id_len = 0;
2315         device->supported_vpds = NULL;
2316         device->supported_vpds_len = 0;
2317
2318         /*
2319          * XXX should be limited by number of CCBs this bus can
2320          * do.
2321          */
2322         bus->sim->max_ccbs += device->ccbq.devq_openings;
2323         if (lun_id != CAM_LUN_WILDCARD) {
2324                 xpt_compile_path(&path,
2325                                  NULL,
2326                                  bus->path_id,
2327                                  target->target_id,
2328                                  lun_id);
2329                 scsi_devise_transport(&path);
2330                 xpt_release_path(&path);
2331         }
2332
2333         return (device);
2334 }
2335
2336 static void
2337 scsi_devise_transport(struct cam_path *path)
2338 {
2339         struct ccb_pathinq cpi;
2340         struct ccb_trans_settings cts;
2341         struct scsi_inquiry_data *inq_buf;
2342
2343         /* Get transport information from the SIM */
2344         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
2345         cpi.ccb_h.func_code = XPT_PATH_INQ;
2346         xpt_action((union ccb *)&cpi);
2347
2348         inq_buf = NULL;
2349         if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
2350                 inq_buf = &path->device->inq_data;
2351         path->device->protocol = PROTO_SCSI;
2352         path->device->protocol_version =
2353             inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version;
2354         path->device->transport = cpi.transport;
2355         path->device->transport_version = cpi.transport_version;
2356
2357         /*
2358          * Any device not using SPI3 features should
2359          * be considered SPI2 or lower.
2360          */
2361         if (inq_buf != NULL) {
2362                 if (path->device->transport == XPORT_SPI
2363                  && (inq_buf->spi3data & SID_SPI_MASK) == 0
2364                  && path->device->transport_version > 2)
2365                         path->device->transport_version = 2;
2366         } else {
2367                 struct cam_ed* otherdev;
2368
2369                 for (otherdev = TAILQ_FIRST(&path->target->ed_entries);
2370                      otherdev != NULL;
2371                      otherdev = TAILQ_NEXT(otherdev, links)) {
2372                         if (otherdev != path->device)
2373                                 break;
2374                 }
2375
2376                 if (otherdev != NULL) {
2377                         /*
2378                          * Initially assume the same versioning as
2379                          * prior luns for this target.
2380                          */
2381                         path->device->protocol_version =
2382                             otherdev->protocol_version;
2383                         path->device->transport_version =
2384                             otherdev->transport_version;
2385                 } else {
2386                         /* Until we know better, opt for safty */
2387                         path->device->protocol_version = 2;
2388                         if (path->device->transport == XPORT_SPI)
2389                                 path->device->transport_version = 2;
2390                         else
2391                                 path->device->transport_version = 0;
2392                 }
2393         }
2394
2395         /*
2396          * XXX
2397          * For a device compliant with SPC-2 we should be able
2398          * to determine the transport version supported by
2399          * scrutinizing the version descriptors in the
2400          * inquiry buffer.
2401          */
2402
2403         /* Tell the controller what we think */
2404         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
2405         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
2406         cts.type = CTS_TYPE_CURRENT_SETTINGS;
2407         cts.transport = path->device->transport;
2408         cts.transport_version = path->device->transport_version;
2409         cts.protocol = path->device->protocol;
2410         cts.protocol_version = path->device->protocol_version;
2411         cts.proto_specific.valid = 0;
2412         cts.xport_specific.valid = 0;
2413         xpt_action((union ccb *)&cts);
2414 }
2415
2416 static void
2417 scsi_dev_advinfo(union ccb *start_ccb)
2418 {
2419         struct cam_ed *device;
2420         struct ccb_dev_advinfo *cdai;
2421         off_t amt;
2422
2423         start_ccb->ccb_h.status = CAM_REQ_INVALID;
2424         device = start_ccb->ccb_h.path->device;
2425         cdai = &start_ccb->cdai;
2426         switch(cdai->buftype) {
2427         case CDAI_TYPE_SCSI_DEVID:
2428                 if (cdai->flags & CDAI_FLAG_STORE)
2429                         return;
2430                 cdai->provsiz = device->device_id_len;
2431                 if (device->device_id_len == 0)
2432                         break;
2433                 amt = device->device_id_len;
2434                 if (cdai->provsiz > cdai->bufsiz)
2435                         amt = cdai->bufsiz;
2436                 memcpy(cdai->buf, device->device_id, amt);
2437                 break;
2438         case CDAI_TYPE_SERIAL_NUM:
2439                 if (cdai->flags & CDAI_FLAG_STORE)
2440                         return;
2441                 cdai->provsiz = device->serial_num_len;
2442                 if (device->serial_num_len == 0)
2443                         break;
2444                 amt = device->serial_num_len;
2445                 if (cdai->provsiz > cdai->bufsiz)
2446                         amt = cdai->bufsiz;
2447                 memcpy(cdai->buf, device->serial_num, amt);
2448                 break;
2449         case CDAI_TYPE_PHYS_PATH:
2450                 if (cdai->flags & CDAI_FLAG_STORE) {
2451                         if (device->physpath != NULL) {
2452                                 free(device->physpath, M_CAMXPT);
2453                                 device->physpath = NULL;
2454                         }
2455                         device->physpath_len = cdai->bufsiz;
2456                         /* Clear existing buffer if zero length */
2457                         if (cdai->bufsiz == 0)
2458                                 break;
2459                         device->physpath = malloc(cdai->bufsiz, M_CAMXPT, M_NOWAIT);
2460                         if (device->physpath == NULL) {
2461                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
2462                                 return;
2463                         }
2464                         memcpy(device->physpath, cdai->buf, cdai->bufsiz);
2465                 } else {
2466                         cdai->provsiz = device->physpath_len;
2467                         if (device->physpath_len == 0)
2468                                 break;
2469                         amt = device->physpath_len;
2470                         if (cdai->provsiz > cdai->bufsiz)
2471                                 amt = cdai->bufsiz;
2472                         memcpy(cdai->buf, device->physpath, amt);
2473                 }
2474                 break;
2475         case CDAI_TYPE_RCAPLONG:
2476                 if (cdai->flags & CDAI_FLAG_STORE) {
2477                         if (device->rcap_buf != NULL) {
2478                                 free(device->rcap_buf, M_CAMXPT);
2479                                 device->rcap_buf = NULL;
2480                         }
2481
2482                         device->rcap_len = cdai->bufsiz;
2483                         /* Clear existing buffer if zero length */
2484                         if (cdai->bufsiz == 0)
2485                                 break;
2486
2487                         device->rcap_buf = malloc(cdai->bufsiz, M_CAMXPT,
2488                                                   M_NOWAIT);
2489                         if (device->rcap_buf == NULL) {
2490                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
2491                                 return;
2492                         }
2493
2494                         memcpy(device->rcap_buf, cdai->buf, cdai->bufsiz);
2495                 } else {
2496                         cdai->provsiz = device->rcap_len;
2497                         if (device->rcap_len == 0)
2498                                 break;
2499                         amt = device->rcap_len;
2500                         if (cdai->provsiz > cdai->bufsiz)
2501                                 amt = cdai->bufsiz;
2502                         memcpy(cdai->buf, device->rcap_buf, amt);
2503                 }
2504                 break;
2505         default:
2506                 return;
2507         }
2508         start_ccb->ccb_h.status = CAM_REQ_CMP;
2509
2510         if (cdai->flags & CDAI_FLAG_STORE) {
2511                 int owned;
2512
2513                 owned = mtx_owned(start_ccb->ccb_h.path->bus->sim->mtx);
2514                 if (owned == 0)
2515                         mtx_lock(start_ccb->ccb_h.path->bus->sim->mtx);
2516                 xpt_async(AC_ADVINFO_CHANGED, start_ccb->ccb_h.path,
2517                           (void *)(uintptr_t)cdai->buftype);
2518                 if (owned == 0)
2519                         mtx_unlock(start_ccb->ccb_h.path->bus->sim->mtx);
2520         }
2521 }
2522
2523 static void
2524 scsi_action(union ccb *start_ccb)
2525 {
2526
2527         switch (start_ccb->ccb_h.func_code) {
2528         case XPT_SET_TRAN_SETTINGS:
2529         {
2530                 scsi_set_transfer_settings(&start_ccb->cts,
2531                                            start_ccb->ccb_h.path->device,
2532                                            /*async_update*/FALSE);
2533                 break;
2534         }
2535         case XPT_SCAN_BUS:
2536         case XPT_SCAN_TGT:
2537                 scsi_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
2538                 break;
2539         case XPT_SCAN_LUN:
2540                 scsi_scan_lun(start_ccb->ccb_h.path->periph,
2541                               start_ccb->ccb_h.path, start_ccb->crcn.flags,
2542                               start_ccb);
2543                 break;
2544         case XPT_GET_TRAN_SETTINGS:
2545         {
2546                 struct cam_sim *sim;
2547
2548                 sim = start_ccb->ccb_h.path->bus->sim;
2549                 (*(sim->sim_action))(sim, start_ccb);
2550                 break;
2551         }
2552         case XPT_DEV_ADVINFO:
2553         {
2554                 scsi_dev_advinfo(start_ccb);
2555                 break;
2556         }
2557         default:
2558                 xpt_action_default(start_ccb);
2559                 break;
2560         }
2561 }
2562
2563 static void
2564 scsi_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device,
2565                            int async_update)
2566 {
2567         struct  ccb_pathinq cpi;
2568         struct  ccb_trans_settings cur_cts;
2569         struct  ccb_trans_settings_scsi *scsi;
2570         struct  ccb_trans_settings_scsi *cur_scsi;
2571         struct  cam_sim *sim;
2572         struct  scsi_inquiry_data *inq_data;
2573
2574         if (device == NULL) {
2575                 cts->ccb_h.status = CAM_PATH_INVALID;
2576                 xpt_done((union ccb *)cts);
2577                 return;
2578         }
2579
2580         if (cts->protocol == PROTO_UNKNOWN
2581          || cts->protocol == PROTO_UNSPECIFIED) {
2582                 cts->protocol = device->protocol;
2583                 cts->protocol_version = device->protocol_version;
2584         }
2585
2586         if (cts->protocol_version == PROTO_VERSION_UNKNOWN
2587          || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
2588                 cts->protocol_version = device->protocol_version;
2589
2590         if (cts->protocol != device->protocol) {
2591                 xpt_print(cts->ccb_h.path, "Uninitialized Protocol %x:%x?\n",
2592                        cts->protocol, device->protocol);
2593                 cts->protocol = device->protocol;
2594         }
2595
2596         if (cts->protocol_version > device->protocol_version) {
2597                 if (bootverbose) {
2598                         xpt_print(cts->ccb_h.path, "Down reving Protocol "
2599                             "Version from %d to %d?\n", cts->protocol_version,
2600                             device->protocol_version);
2601                 }
2602                 cts->protocol_version = device->protocol_version;
2603         }
2604
2605         if (cts->transport == XPORT_UNKNOWN
2606          || cts->transport == XPORT_UNSPECIFIED) {
2607                 cts->transport = device->transport;
2608                 cts->transport_version = device->transport_version;
2609         }
2610
2611         if (cts->transport_version == XPORT_VERSION_UNKNOWN
2612          || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
2613                 cts->transport_version = device->transport_version;
2614
2615         if (cts->transport != device->transport) {
2616                 xpt_print(cts->ccb_h.path, "Uninitialized Transport %x:%x?\n",
2617                     cts->transport, device->transport);
2618                 cts->transport = device->transport;
2619         }
2620
2621         if (cts->transport_version > device->transport_version) {
2622                 if (bootverbose) {
2623                         xpt_print(cts->ccb_h.path, "Down reving Transport "
2624                             "Version from %d to %d?\n", cts->transport_version,
2625                             device->transport_version);
2626                 }
2627                 cts->transport_version = device->transport_version;
2628         }
2629
2630         sim = cts->ccb_h.path->bus->sim;
2631
2632         /*
2633          * Nothing more of interest to do unless
2634          * this is a device connected via the
2635          * SCSI protocol.
2636          */
2637         if (cts->protocol != PROTO_SCSI) {
2638                 if (async_update == FALSE)
2639                         (*(sim->sim_action))(sim, (union ccb *)cts);
2640                 return;
2641         }
2642
2643         inq_data = &device->inq_data;
2644         scsi = &cts->proto_specific.scsi;
2645         xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, CAM_PRIORITY_NONE);
2646         cpi.ccb_h.func_code = XPT_PATH_INQ;
2647         xpt_action((union ccb *)&cpi);
2648
2649         /* SCSI specific sanity checking */
2650         if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
2651          || (INQ_DATA_TQ_ENABLED(inq_data)) == 0
2652          || (device->queue_flags & SCP_QUEUE_DQUE) != 0
2653          || (device->mintags == 0)) {
2654                 /*
2655                  * Can't tag on hardware that doesn't support tags,
2656                  * doesn't have it enabled, or has broken tag support.
2657                  */
2658                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2659         }
2660
2661         if (async_update == FALSE) {
2662                 /*
2663                  * Perform sanity checking against what the
2664                  * controller and device can do.
2665                  */
2666                 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, CAM_PRIORITY_NONE);
2667                 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
2668                 cur_cts.type = cts->type;
2669                 xpt_action((union ccb *)&cur_cts);
2670                 if (cam_ccb_status((union ccb *)&cur_cts) != CAM_REQ_CMP) {
2671                         return;
2672                 }
2673                 cur_scsi = &cur_cts.proto_specific.scsi;
2674                 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
2675                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2676                         scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB;
2677                 }
2678                 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0)
2679                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2680         }
2681
2682         /* SPI specific sanity checking */
2683         if (cts->transport == XPORT_SPI && async_update == FALSE) {
2684                 u_int spi3caps;
2685                 struct ccb_trans_settings_spi *spi;
2686                 struct ccb_trans_settings_spi *cur_spi;
2687
2688                 spi = &cts->xport_specific.spi;
2689
2690                 cur_spi = &cur_cts.xport_specific.spi;
2691
2692                 /* Fill in any gaps in what the user gave us */
2693                 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
2694                         spi->sync_period = cur_spi->sync_period;
2695                 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0)
2696                         spi->sync_period = 0;
2697                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
2698                         spi->sync_offset = cur_spi->sync_offset;
2699                 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0)
2700                         spi->sync_offset = 0;
2701                 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
2702                         spi->ppr_options = cur_spi->ppr_options;
2703                 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0)
2704                         spi->ppr_options = 0;
2705                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
2706                         spi->bus_width = cur_spi->bus_width;
2707                 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0)
2708                         spi->bus_width = 0;
2709                 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) {
2710                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
2711                         spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB;
2712                 }
2713                 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0)
2714                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
2715                 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
2716                   && (inq_data->flags & SID_Sync) == 0
2717                   && cts->type == CTS_TYPE_CURRENT_SETTINGS)
2718                  || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0)) {
2719                         /* Force async */
2720                         spi->sync_period = 0;
2721                         spi->sync_offset = 0;
2722                 }
2723
2724                 switch (spi->bus_width) {
2725                 case MSG_EXT_WDTR_BUS_32_BIT:
2726                         if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
2727                           || (inq_data->flags & SID_WBus32) != 0
2728                           || cts->type == CTS_TYPE_USER_SETTINGS)
2729                          && (cpi.hba_inquiry & PI_WIDE_32) != 0)
2730                                 break;
2731                         /* Fall Through to 16-bit */
2732                 case MSG_EXT_WDTR_BUS_16_BIT:
2733                         if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0
2734                           || (inq_data->flags & SID_WBus16) != 0
2735                           || cts->type == CTS_TYPE_USER_SETTINGS)
2736                          && (cpi.hba_inquiry & PI_WIDE_16) != 0) {
2737                                 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2738                                 break;
2739                         }
2740                         /* Fall Through to 8-bit */
2741                 default: /* New bus width?? */
2742                 case MSG_EXT_WDTR_BUS_8_BIT:
2743                         /* All targets can do this */
2744                         spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2745                         break;
2746                 }
2747
2748                 spi3caps = cpi.xport_specific.spi.ppr_options;
2749                 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0
2750                  && cts->type == CTS_TYPE_CURRENT_SETTINGS)
2751                         spi3caps &= inq_data->spi3data;
2752
2753                 if ((spi3caps & SID_SPI_CLOCK_DT) == 0)
2754                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
2755
2756                 if ((spi3caps & SID_SPI_IUS) == 0)
2757                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2758
2759                 if ((spi3caps & SID_SPI_QAS) == 0)
2760                         spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
2761
2762                 /* No SPI Transfer settings are allowed unless we are wide */
2763                 if (spi->bus_width == 0)
2764                         spi->ppr_options = 0;
2765
2766                 if ((spi->valid & CTS_SPI_VALID_DISC)
2767                  && ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0)) {
2768                         /*
2769                          * Can't tag queue without disconnection.
2770                          */
2771                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
2772                         scsi->valid |= CTS_SCSI_VALID_TQ;
2773                 }
2774
2775                 /*
2776                  * If we are currently performing tagged transactions to
2777                  * this device and want to change its negotiation parameters,
2778                  * go non-tagged for a bit to give the controller a chance to
2779                  * negotiate unhampered by tag messages.
2780                  */
2781                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS
2782                  && (device->inq_flags & SID_CmdQue) != 0
2783                  && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
2784                  && (spi->flags & (CTS_SPI_VALID_SYNC_RATE|
2785                                    CTS_SPI_VALID_SYNC_OFFSET|
2786                                    CTS_SPI_VALID_BUS_WIDTH)) != 0)
2787                         scsi_toggle_tags(cts->ccb_h.path);
2788         }
2789
2790         if (cts->type == CTS_TYPE_CURRENT_SETTINGS
2791          && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
2792                 int device_tagenb;
2793
2794                 /*
2795                  * If we are transitioning from tags to no-tags or
2796                  * vice-versa, we need to carefully freeze and restart
2797                  * the queue so that we don't overlap tagged and non-tagged
2798                  * commands.  We also temporarily stop tags if there is
2799                  * a change in transfer negotiation settings to allow
2800                  * "tag-less" negotiation.
2801                  */
2802                 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
2803                  || (device->inq_flags & SID_CmdQue) != 0)
2804                         device_tagenb = TRUE;
2805                 else
2806                         device_tagenb = FALSE;
2807
2808                 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0
2809                   && device_tagenb == FALSE)
2810                  || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0
2811                   && device_tagenb == TRUE)) {
2812
2813                         if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) {
2814                                 /*
2815                                  * Delay change to use tags until after a
2816                                  * few commands have gone to this device so
2817                                  * the controller has time to perform transfer
2818                                  * negotiations without tagged messages getting
2819                                  * in the way.
2820                                  */
2821                                 device->tag_delay_count = CAM_TAG_DELAY_COUNT;
2822                                 device->flags |= CAM_DEV_TAG_AFTER_COUNT;
2823                         } else {
2824                                 xpt_stop_tags(cts->ccb_h.path);
2825                         }
2826                 }
2827         }
2828         if (async_update == FALSE)
2829                 (*(sim->sim_action))(sim, (union ccb *)cts);
2830 }
2831
2832 static void
2833 scsi_toggle_tags(struct cam_path *path)
2834 {
2835         struct cam_ed *dev;
2836
2837         /*
2838          * Give controllers a chance to renegotiate
2839          * before starting tag operations.  We
2840          * "toggle" tagged queuing off then on
2841          * which causes the tag enable command delay
2842          * counter to come into effect.
2843          */
2844         dev = path->device;
2845         if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0
2846          || ((dev->inq_flags & SID_CmdQue) != 0
2847           && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) {
2848                 struct ccb_trans_settings cts;
2849
2850                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
2851                 cts.protocol = PROTO_SCSI;
2852                 cts.protocol_version = PROTO_VERSION_UNSPECIFIED;
2853                 cts.transport = XPORT_UNSPECIFIED;
2854                 cts.transport_version = XPORT_VERSION_UNSPECIFIED;
2855                 cts.proto_specific.scsi.flags = 0;
2856                 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
2857                 scsi_set_transfer_settings(&cts, path->device,
2858                                           /*async_update*/TRUE);
2859                 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
2860                 scsi_set_transfer_settings(&cts, path->device,
2861                                           /*async_update*/TRUE);
2862         }
2863 }
2864
2865 /*
2866  * Handle any per-device event notifications that require action by the XPT.
2867  */
2868 static void
2869 scsi_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
2870               struct cam_ed *device, void *async_arg)
2871 {
2872         cam_status status;
2873         struct cam_path newpath;
2874
2875         /*
2876          * We only need to handle events for real devices.
2877          */
2878         if (target->target_id == CAM_TARGET_WILDCARD
2879          || device->lun_id == CAM_LUN_WILDCARD)
2880                 return;
2881
2882         /*
2883          * We need our own path with wildcards expanded to
2884          * handle certain types of events.
2885          */
2886         if ((async_code == AC_SENT_BDR)
2887          || (async_code == AC_BUS_RESET)
2888          || (async_code == AC_INQ_CHANGED))
2889                 status = xpt_compile_path(&newpath, NULL,
2890                                           bus->path_id,
2891                                           target->target_id,
2892                                           device->lun_id);
2893         else
2894                 status = CAM_REQ_CMP_ERR;
2895
2896         if (status == CAM_REQ_CMP) {
2897
2898                 /*
2899                  * Allow transfer negotiation to occur in a
2900                  * tag free environment and after settle delay.
2901                  */
2902                 if (async_code == AC_SENT_BDR
2903                  || async_code == AC_BUS_RESET) {
2904                         cam_freeze_devq(&newpath);
2905                         cam_release_devq(&newpath,
2906                                 RELSIM_RELEASE_AFTER_TIMEOUT,
2907                                 /*reduction*/0,
2908                                 /*timeout*/scsi_delay,
2909                                 /*getcount_only*/0);
2910                         scsi_toggle_tags(&newpath);
2911                 }
2912
2913                 if (async_code == AC_INQ_CHANGED) {
2914                         /*
2915                          * We've sent a start unit command, or
2916                          * something similar to a device that
2917                          * may have caused its inquiry data to
2918                          * change. So we re-scan the device to
2919                          * refresh the inquiry data for it.
2920                          */
2921                         scsi_scan_lun(newpath.periph, &newpath,
2922                                      CAM_EXPECT_INQ_CHANGE, NULL);
2923                 }
2924                 xpt_release_path(&newpath);
2925         } else if (async_code == AC_LOST_DEVICE &&
2926             (device->flags & CAM_DEV_UNCONFIGURED) == 0) {
2927                 device->flags |= CAM_DEV_UNCONFIGURED;
2928                 xpt_release_device(device);
2929         } else if (async_code == AC_TRANSFER_NEG) {
2930                 struct ccb_trans_settings *settings;
2931
2932                 settings = (struct ccb_trans_settings *)async_arg;
2933                 scsi_set_transfer_settings(settings, device,
2934                                           /*async_update*/TRUE);
2935         }
2936 }
2937
2938 static void
2939 scsi_announce_periph(struct cam_periph *periph)
2940 {
2941         struct  ccb_pathinq cpi;
2942         struct  ccb_trans_settings cts;
2943         struct  cam_path *path = periph->path;
2944         u_int   speed;
2945         u_int   freq;
2946         u_int   mb;
2947
2948         mtx_assert(periph->sim->mtx, MA_OWNED);
2949
2950         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NORMAL);
2951         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
2952         cts.type = CTS_TYPE_CURRENT_SETTINGS;
2953         xpt_action((union ccb*)&cts);
2954         if (cam_ccb_status((union ccb *)&cts) != CAM_REQ_CMP)
2955                 return;
2956         /* Ask the SIM for its base transfer speed */
2957         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL);
2958         cpi.ccb_h.func_code = XPT_PATH_INQ;
2959         xpt_action((union ccb *)&cpi);
2960         /* Report connection speed */
2961         speed = cpi.base_transfer_speed;
2962         freq = 0;
2963         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
2964                 struct  ccb_trans_settings_spi *spi =
2965                     &cts.xport_specific.spi;
2966
2967                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0
2968                   && spi->sync_offset != 0) {
2969                         freq = scsi_calc_syncsrate(spi->sync_period);
2970                         speed = freq;
2971                 }
2972                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
2973                         speed *= (0x01 << spi->bus_width);
2974         }
2975         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
2976                 struct  ccb_trans_settings_fc *fc =
2977                     &cts.xport_specific.fc;
2978
2979                 if (fc->valid & CTS_FC_VALID_SPEED)
2980                         speed = fc->bitrate;
2981         }
2982         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SAS) {
2983                 struct  ccb_trans_settings_sas *sas =
2984                     &cts.xport_specific.sas;
2985
2986                 if (sas->valid & CTS_SAS_VALID_SPEED)
2987                         speed = sas->bitrate;
2988         }
2989         mb = speed / 1000;
2990         if (mb > 0)
2991                 printf("%s%d: %d.%03dMB/s transfers",
2992                        periph->periph_name, periph->unit_number,
2993                        mb, speed % 1000);
2994         else
2995                 printf("%s%d: %dKB/s transfers", periph->periph_name,
2996                        periph->unit_number, speed);
2997         /* Report additional information about SPI connections */
2998         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) {
2999                 struct  ccb_trans_settings_spi *spi;
3000
3001                 spi = &cts.xport_specific.spi;
3002                 if (freq != 0) {
3003                         printf(" (%d.%03dMHz%s, offset %d", freq / 1000,
3004                                freq % 1000,
3005                                (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
3006                              ? " DT" : "",
3007                                spi->sync_offset);
3008                 }
3009                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0
3010                  && spi->bus_width > 0) {
3011                         if (freq != 0) {
3012                                 printf(", ");
3013                         } else {
3014                                 printf(" (");
3015                         }
3016                         printf("%dbit)", 8 * (0x01 << spi->bus_width));
3017                 } else if (freq != 0) {
3018                         printf(")");
3019                 }
3020         }
3021         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) {
3022                 struct  ccb_trans_settings_fc *fc;
3023
3024                 fc = &cts.xport_specific.fc;
3025                 if (fc->valid & CTS_FC_VALID_WWNN)
3026                         printf(" WWNN 0x%llx", (long long) fc->wwnn);
3027                 if (fc->valid & CTS_FC_VALID_WWPN)
3028                         printf(" WWPN 0x%llx", (long long) fc->wwpn);
3029                 if (fc->valid & CTS_FC_VALID_PORT)
3030                         printf(" PortID 0x%x", fc->port);
3031         }
3032         printf("\n");
3033 }
3034